329 Commits

Author SHA1 Message Date
80c87539f5 New translations dependencies.mdx (Ukrainian)
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2026-08-31 15:09:11 +08:00
dee16616e4 New translations dependency-commands.mdx (Ukrainian)
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9181276bde New translations changelog.mdx (Ukrainian)
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0ca083a6c0 New translations dependencies.mdx (Russian)
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95fe4eab02 New translations dependency-commands.mdx (Russian)
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bf0d38e2e9 New translations changelog.mdx (Russian)
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3ffe6eeca9 New translations dependencies.mdx (Polish)
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51439a79a0 New translations dependency-commands.mdx (Polish)
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0820574db6 New translations changelog.mdx (Polish)
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2857bfa058 New translations dependencies.mdx (German)
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790c4933fa New translations dependency-commands.mdx (German)
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2026-08-31 15:08:42 +08:00
396412048f New translations changelog.mdx (German)
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2026-08-31 15:08:39 +08:00
01f76fe052 New translations environment-variables.mdx (Ukrainian)
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2026-08-13 13:07:10 +08:00
bee6a4a2e8 New translations installation.mdx (Ukrainian)
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ac5e2d9785 New translations faq.mdx (Ukrainian)
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ac6fa37097 New translations contributing.mdx (Ukrainian)
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a1118ca7da New translations readme.mdx (Ukrainian)
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57a1247871 New translations environment-variables.mdx (Russian)
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f7ccafaa35 New translations installation.mdx (Russian)
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a629fb43b8 New translations faq.mdx (Russian)
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369db6a14c New translations environment-variables.mdx (Polish)
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cd38d36eb9 New translations installation.mdx (Polish)
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68b779fa94 New translations faq.mdx (Polish)
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abd78ad7c8 New translations environment-variables.mdx (German)
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18952378e4 New translations installation.mdx (German)
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b9b457ebad New translations faq.mdx (German)
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e80fd0b62c New translations contributing.mdx (German)
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e2b9f1ffa7 New translations readme.mdx (German)
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2026-08-13 13:06:21 +08:00
1c43af2234 New translations changelog.mdx (Ukrainian)
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2026-08-13 13:06:19 +08:00
715ecba2bb New translations changelog.mdx (Russian)
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c3b769c0ae New translations changelog.mdx (Polish)
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cc01cf4c2f New translations changelog.mdx (German)
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06462adf69 New translations ide-integration.mdx (Ukrainian)
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2026-08-12 18:02:47 +08:00
77327244ee New translations ide-integration.mdx (Russian)
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16a1a01dc5 New translations ide-integration.mdx (Polish)
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828649caa7 New translations ide-integration.mdx (German)
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59a7cb6b8c New translations dcr-toml.mdx (Ukrainian)
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2026-08-08 15:03:14 +08:00
e90eda5fa8 New translations dcr-toml.mdx (Russian)
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820114d7d8 New translations dcr-toml.mdx (Polish)
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46c7607b62 New translations dcr-toml.mdx (German)
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ffcc245cec New translations changelog.mdx (Ukrainian)
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f0a0da18b0 New translations changelog.mdx (Russian)
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7a64c2e944 New translations changelog.mdx (Polish)
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098724a1ea New translations changelog.mdx (German)
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ba810d2d98 New translations changelog.mdx (Ukrainian)
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2026-08-05 21:37:42 +08:00
61ad537055 New translations changelog.mdx (Russian)
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59f0a80ff5 New translations changelog.mdx (Polish)
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20bca3b66b New translations changelog.mdx (German)
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e1b32a5161 New translations changelog.mdx (Ukrainian)
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85783ff981 New translations changelog.mdx (Russian)
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199f663d1b New translations changelog.mdx (Polish)
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c68f639e61 New translations changelog.mdx (German)
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19aee3e079 New translations contributing.mdx (Ukrainian)
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2026-07-24 19:40:52 +08:00
4b061dae37 New translations changelog.mdx (Ukrainian)
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e294cc47e6 New translations readme.mdx (Ukrainian)
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81ae976c15 New translations contributing.mdx (Russian)
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587d6aeb80 New translations changelog.mdx (Russian)
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0e7825ab77 New translations readme.mdx (Russian)
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b9a53bbed1 New translations contributing.mdx (Polish)
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12950b0c46 New translations changelog.mdx (Polish)
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2026-07-24 19:40:34 +08:00
5ba6d07847 New translations readme.mdx (Polish)
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cd33597a8a New translations contributing.mdx (German)
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81ac949d6d New translations changelog.mdx (German)
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2026-07-24 19:40:26 +08:00
9487b10e2d New translations readme.mdx (German)
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9cf6223fcf New translations dcr-toml.mdx (Ukrainian)
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2026-07-24 19:40:20 +08:00
ceddc3bb5c New translations dcr-toml.mdx (Russian)
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82de6e8c60 New translations dcr-toml.mdx (Polish)
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6badcb7465 New translations dcr-toml.mdx (German)
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60a14c7a4c New translations installation.mdx (Ukrainian)
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72e7a4c7ad New translations installation.mdx (Russian)
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a0216a8fb0 New translations installation.mdx (Polish)
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9c9a66d0fe New translations installation.mdx (German)
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47d88d13ff New translations os-flat-bin-archive.mdx (Ukrainian)
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f56f23b501 New translations platform-support.mdx (Ukrainian)
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fc75d6239a New translations cross-compilation.mdx (Ukrainian)
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edf1c6d181 New translations build-system.mdx (Ukrainian)
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f104472a7e New translations first-steps.mdx (Ukrainian)
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39a99e85fd New translations workspaces.mdx (Ukrainian)
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42c5cbe97e New translations dependencies.mdx (Ukrainian)
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9a18dae5fd New translations dcr-toml.mdx (Ukrainian)
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7287af6a84 New translations faq.mdx (Ukrainian)
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f1b66c511d New translations contributing.mdx (Ukrainian)
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fd6077ff74 New translations build-commands.mdx (Ukrainian)
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983ca31a0e New translations changelog.mdx (Ukrainian)
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0fcfc41f1b New translations readme.mdx (Ukrainian)
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a0da1bc328 New translations os-flat-bin-archive.mdx (Russian)
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d334d2bcb3 New translations platform-support.mdx (Russian)
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5aee983fd4 New translations first-steps.mdx (Russian)
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638f26c5df New translations build-commands.mdx (Russian)
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054e715b06 New translations changelog.mdx (Russian)
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1960f354ef New translations readme.mdx (Russian)
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e41b69f0e2 New translations os-flat-bin-archive.mdx (Polish)
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c10fbccfef New translations platform-support.mdx (Polish)
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e011803ad7 New translations os-flat-bin-archive.mdx (German)
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5fabc5b432 New translations workspaces.mdx (Polish)
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533874a331 New translations dcr-toml.mdx (Russian)
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87b9828511 New translations dcr-toml.mdx (Polish)
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e72bc4e778 New translations workspaces.mdx (Ukrainian)
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---
sidebar_label: Introduction
---
# DCR — C/C++ Build Tool & Package Manager
<details>
<summary>Quick reference</summary>
```bash
# Installation (dcrup)
curl -fsSL https://sh.dcr-tool.ru | sh -s -- self-install
export PATH="$HOME/.dcr/bin:$PATH"
dcrup install stable # auto: cf → gh → sf → ya
# dcrup install stable --mirror cf # CloudFlare / GitHub / SourceForge / Yandex
# Create a project
dcr new my-app
cd my-app
# Build and run
dcr build
dcr run
# Run tests
dcr test
# Add a dependency
dcr add fmt
# Generate IDE files
dcr gen vscode
```
</details>
## Contents
| Section | Description |
| ----------------------------------------------------- | --------------------------------------------- |
| [Getting Started](/docs/getting-started/installation) | Installation and first steps |
| [Commands](/docs/commands/project-commands) | All CLI commands |
| [Reference](/docs/reference/dcr-toml) | Configuration, build, dependencies, platforms |
| [Testing](/docs/testing/test-framework) | Built-in test framework |
| [Recipes](/docs/recipes/cross-to-windows) | Common scenarios |
| [IDE Integration](/docs/ide-integration) | VS Code, CLion, compile_commands.json |
| [Self Update](/docs/self-update) | Auto-update |
| [FAQ](/docs/faq) | Frequently asked questions |
| [Changelog](/docs/changelog) | Version history |
| [License](/docs/license) | DCR and vendored library licenses |
| [Contributing](/docs/contributing) | DCR development |
## Features
* **Incremental builds** — mtime + `.d` headers + SHA256 fingerprint
* **Parallel compilation** — thread::scope, atomic task queue
* **7 backends** — gcc/clang (unix_cc), MSVC/clang-cl (msvc), GAS, NASM, MASM, FASM, LLVM IR
* **8 project kinds** — bin, staticlib, sharedlib, efi, elf, none, custom, flat-bin
* **Disk images** — optional `[archive]` packs FAT12/16/32 images after build
* **Cross-compilation** — short names and full triples
* **Profiles** — debug / release with field overrides
* **Workspaces** — multi-package projects with topological sort
* **Registry + Git + Path** — three dependency mechanisms
* **IDE generation** — VS Code, CLion, compile_commands.json, JSON metadata
* **pkg-config** — automatic system library discovery
* **Per-command `--help`** — `dcr build --help`, `dcr new --help`, etc.
* **Man pages** — `man dcr`, `man dcr-build`, `man dcr-new`

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---
sidebar_label: Changelog
---
# Changelog
## 0.9.0 (2026-08-31)
* **Download mirrors in `dcrup`** — `--mirror auto|cf|gh|sf|ya` and `DCRUP_MIRROR`.
Default `auto` tries **cf → gh → sf → ya** (CloudFlare CDN, GitHub, SourceForge, Yandex CDN).
* **Complete Path/Git dependencies** — DCR packages from `path` and `git` are built before their consumer. Git sources are cached in `~/.dcr/git`, support `branch`/`tag`/`rev`, and record the exact commit in `dcr.lock`.
* **Build and prebuild modes** — `path` and `git` dependencies can build a DCR package from `dcr.toml` or link existing `include`/`lib`/`libs` artifacts; `mode = "build"` / `"prebuild"` selects explicitly when both forms are present.
* **Prebuilt dependency examples** — documentation now shows the `dcr-math-lib` Git repository and recommended build/prebuilt layouts for both `git` and `path`.
* **Transitive dependency builds and cycle reporting** — DCR recursively builds DCR packages and reports a clear dependency chain for cycles.
* **Bare path arguments for `dcr add`** — `dcr add mylib ../mylib` now works in addition to the explicit `path:` form.
* **Removed `install.sh` / `install.ps1` / `install_bsd.sh`** — superseded by `dcrup`.
## 0.8.5 (2026-08-08)
* **`package.dcr-version`** — optional CLI version pin in `dcr.toml`.
`dcr new` / `dcr init` write the current version. On config load:
* missing / empty pin → warn "add dcr-version";
* dcr older than pin → warn "update dcr";
* dcr newer than pin → warn "check changelog, update pin";
* equal → silent.
Commands do not fail, warning only (once per path per process).
## 0.8.4 (2026-08-04)
**Added:**
* **`.dcr/` directory** — shared machine-readable build facts for IDE integrations:
* `.dcr/compile_commands.json`
* `.dcr/build-info.json` (`schemaVersion`, `artifact_path`, `profile`, …)
* `.dcr/toolchain.json` (compiler/debugger paths, moc/uic/rcc)
* `.dcr/ide/` (placeholder for IDE lock files)
* **`dcr gen project-info`** — `target`, `target_dir`, `artifact_path`, `artifact_kind`, `source_roots`, `include_globs`, `exclude_globs`; absolute/canonical paths.
* **`dcr build --print-artifact-path`** — one absolute artifact path line on stdout after a successful build.
* **`dcr gen … --quiet` / `-q`** — suppress human success logs for gen subcommands.
* **`.clangd`** — created on first gen with `CompilationDatabase: .dcr` (`# managed by dcr gen`); custom `.clangd` is not overwritten.
* **Helpers** `canonicalize_path`, `atomic_write`, `ensure_dcr_dir`; pure `resolve_artifact_path` via `platform::*`.
* **`dcr new` / `dcr init`** — add `.dcr/` to `.gitignore`.
**Changed (breaking):**
* **`compile_commands.json` moved** from project root to **`.dcr/compile_commands.json`**.\
clangd discovers it via `.clangd` / `--compile-commands-dir=.dcr`.\
CLion and VSCode generators updated accordingly.
* **Atomic write** for compile_commands (tmp + rename).
* **`gen vscode` / `gen clion` launch/run** — use the same artifact path resolver as `project-info` / `build-info.json`.
**Fixed:**
* Launch configs no longer hardcode `target/\<profile>/\<name>` without the Linux triple segment.
* Symlink/mount roots: best-effort canonicalize for root and compile database paths.
## 0.8.3 (2026-08-03)
### Added
* **`dcr run -- \<args>...`** — cargo-style argument forwarding after a bare `--`\
(`dcr run --release -- --test_help`). Applies to direct binary runs and `[run].cmd`.
* **Tests** — host target section `ldflags` without CLI `--target`; run-arg forwarding; `split_double_dash` unit tests.
### Changed
* **Native builds resolve the host triple** — without `--target` / package `build.target`, host sections such as\
`[build.x86_64-unknown-linux-gnu]` apply again (`cflags` / `ldflags` / toolchain).\
Previously the target was empty and those sections were ignored while artifacts already used the host triple path.
* **Empty target** — no more `Unknown target ''` warning.
* **`dcr run --help` / man `dcr-run`** — document `--` forwarding.
### Fixed
* **Native artifact paths on Windows and macOS** — without an explicit `--target` / `build.target`, artifacts use `target/\<profile>`, so `dcr run` and flat-bin find the build output.
* Target-specific `ldflags` missing on native host builds (e.g. micro-lang + `libsct-elf`).
* Spurious empty-target warning.
## 0.8.2 (2026-07-22)
### Added
* **Compile progress `[N/M]`** — live TTY status line (`compile pkg v0.1.0 [12/41]`) so long mono-package builds do not look hung.
* **DCR status style** — fixed-width verbs: `project`, `compile`, `dep`, `ready`, `pack`, `done`, `run`.
* **Cargo feature `archive`** — optional FAT packing via `fatfs` (`cargo build --features archive`). Release CI builds with the feature; without it `[archive]` fails with a clear message.
* **Tests** — `flat_bin_nasm_build`, package `build.target` without CLI `--target`, stricter workspace `clean --all`.
* **CI expansion** — unit + integration on Linux/macOS/Windows, archive feature job, rust-cache, clippy default + all-features (see `.github/workflows/ci.yml`).
### Changed
* **No forced host triple from CLI** — without `--target`, package/member `build.target` is honored (bare-metal / ISO `post_steps` paths).
* **Relative include/lib flags** (`-I`, `-i`, `-isystem`, `-idirafter`, `-L`, `-T`) absolutized against the package root under workspace builds.
* **`dcr clean --all`** — no spam for members without a local `target/` (shared root `target/`).
* **`error` / `warn`** — red / yellow on stderr; CLI fully English (`Hint:`).
* **Help / man** — list `add`, `lint`, `setup`; unknown command exits with code 1.
* **Tool NotFound** — `linker not found: ld.lld …` / `{tool} not found …` instead of raw `os error 2`.
## 0.8.1 (2026-07-20)
### Added
* **`build.kind = "flat-bin"`** — raw binary (default `.bin`) for OS-dev payloads:
* **NASM** — `-f bin` → `\<stem>.bin`
* **FASM** — direct output (`format binary` in source)
* **GAS / MASM / LLC** — object → `objcopy -O binary` → `\<stem>.bin`
* **C/C++** — objects → freestanding link → `objcopy -O binary` → `\<name>.bin`
* Requires `llvm-objcopy` / `objcopy` / `gobjcopy` except for NASM/FASM direct emit
* **`[archive]` section** — FAT12/16/32 disk images after build (`output`, `format`, `size`, `offset`, `label`, `bootsector`, `layout`). From 0.8.2 requires feature `archive`.
* **Single-file `build.roots`** — a root may be a single source or header file, not only a directory.
### Changed
* **`--force`** also re-runs `build.steps` and `build.post_steps`.
* **`dcr run` on workspace-only root** — if `[run].cmd` is set, run that after build; otherwise delegate to a workspace member.
## 0.8.0 (2026-07-18)
### Added
* **Dedicated Build Engine (`src/core/build/engine.rs`)** — decoupled the build orchestration logic completely from the CLI front-end wrapper in `src/cli/build.rs` to a reusable, decoupled core build engine.
* **Polymorphic Language Model (`Language` trait)** — introduced the abstract `Language` trait (`src/core/build/language/mod.rs`). File scanning, compiler resolution, and flags handling are now encapsulated in dedicated language modules for C, C++ (including Qt code generation), LLVM IR, and ASM (GAS, NASM, FASM, MASM).
* **Polymorphic Compilation Dispatch (`Builder` trait)** — introduced the `Builder` trait to generalize builder invocations (`src/core/build/builder/mod.rs`). Consolidated GCC/Clang logic into `builder/cc_common.rs` and Microsoft Visual C++ logic into `builder/msvc/`.
* **Per-Language Configuration overrides (`[build.\<lang>]`)** — introduced support for configuring language-specific compiler, standard, and flags (e.g. `[build.c]`, `[build.cxx]`, `[build.asm]`) independently in `dcr.toml`.
* **Automatic Workspace Dependency Injection** — during workspace builds, include/lib paths of dependent workspace members (including their source headers, local `include/` folders, and build target `target/include` / `target/lib` folders) are automatically resolved and injected.
* **`BuildReporter` Event System** — decoupled build orchestration output into a structured event-driven reporter model (`src/core/build/report.rs`), making DCR suitable for library embedding and IDE integrations without stderr capturing.
* **Build Cancellation Support** — introduced thread-safe cancellation tokens (`Arc\<AtomicBool>`) allowing clients to safely abort compile runs mid-execution.
* **TOML Formatting & Custom Keys Preservation** — migrated the config editor to `toml_edit`, preserving all unknown/user-defined TOML keys, structures, and comments during file write operations (e.g., in `dcr add`).
* **Path Dependencies Target Include Resolution** — local path dependencies configured via tables now correctly expose headers built and packaged into their `target/include` folder to consumer packages.
* **Modular Integration Test Suite** — refactored the monolith `tests/cli_basic.rs` file into clean, specialized integration tests: `cli_build.rs`, `cli_deps.rs`, `cli_lint.rs`, `cli_new.rs`, `cli_qt.rs`, `cli_test.rs`, `cli_workspace.rs`.
### Changed
* **Consolidated Linking and Archiving** — artifact generation (linking executables/shared libraries and archiving static libraries) consolidated into a single `src/core/build/builder/artifact.rs` module.
* **Workspace-Aware member execution** — `dcr run` executed at the workspace root of a `workspace_only` project now triggers the member build inside the workspace context using the `--workspace` parameter, preventing standalone build issues.
* **Elimination of Global State** — removed global variables and states from the build core, encapsulating build logic inside isolated `BuildContext` structs for thread safety.
* **Build Cache Separation** — relocated mtime tracking, incremental caching, and header-dependency checking logic to `src/core/build/cache.rs`.
* **Modularized Pre-build Steps** — decoupled generator scripts and pre-build commands parsing into `src/core/build/steps.rs`.
## 0.7.4 (2026-06-17)
### Added
* **Native Qt support** — automatic meta-object handling (MOC, UIC, RCC) added when `build.qt = true` is set in `dcr.toml`.
* **`dcr lint` command** — C/C++ static analysis via `clang-tidy`. Supports `--fix` for automatic fixes. Respects `build.roots` and `build.src_disable` from config.
* **Three new assembler backends**:
* **MASM** (`compiler = "ml"` / `"ml64"`) — Microsoft Macro Assembler.
* **FASM** (`compiler = "fasm"`) — Flat Assembler.
* **LLVM IR** (`compiler = "llc"`) — compiles `.ll` files via `llc -filetype=obj`.
* **Shared ASM pipeline** — linking and archiving logic consolidated into `core/builder/asm.rs`. Adding a new assembler backend now takes ~30 lines.
* **Filesystem utilities** — `to_hex()` and `home_dir()` extracted to `utils/fs.rs`.
* **Build utilities** — `normalize_target()`, `normalize_kind()`, `normalize_platform()`, `default_profile_flags()` extracted to `utils/build.rs`.
* **Backend helpers** — `asm_lang_flag()`, `source_extensions()`, `elapsed_secs()` added to `core/builder/common.rs`.
* **Full Bare-Metal / Freestanding Automation** — introduced the `build.freestanding = true` configuration option. When enabled (or when a bare-metal target is detected), DCR automatically injects `-ffreestanding` during compilation and both `-nostdlib` and `-static` during linking.
* **Artifact Optimization (LTO & Strip)** — added `build.lto` (auto-injects `-flto` for compiler and linker) and `build.strip` (automatically strips debug symbols via linker `-s` flag) options to `dcr.toml`.
* **Compilation Thread Control** — added the `build.codegen-units` option to strictly limit the maximum number of parallel jobs utilized by the custom `parallel_build` worker pool.
* **Panic Behavior Management** — added `build.panic = "abort"` support. For C++ targets, it automatically strips exception handling and unwind tables via `-fno-exceptions`, `-fno-unwind-tables`, and `-fno-asynchronous-unwind-tables`.
### Changed
* **Intelligent Default Flags Generation** — automated injection of fallback optimization (`-O3`/`-O0`), debug (`-g`), and warning (`-Wall -Wextra`) flags is now suppressed for bare-metal and freestanding builds if `build.cflags` are overridden.
* **Centralized Bare-Metal Detection** — relocated the `is_bare_metal_target` helper to common build utilities (`src/utils/build.rs`) for unified access across the building core.
* **Architectural Refactoring**:
* Renamed `src/config.rs` to `src/templates.rs`.
* Started consolidation of configuration and build orchestration logic.
## 0.7.3 (2026-06-13)
### Added
* **`--vcs` option for `new` and `init` commands** — introduced explicit version control system selection via `--vcs \<git|none>`.
* **Git metadata integration in `--version`** — the CLI now appends the current short commit hash and a `-dirty` suffix if there are uncommitted changes in the DCR repository.
* **Automatic `.gitignore` generation** — Git repository initialization now automatically writes a `.gitignore` file excluding the `/target` directory.
* **Nested repository prevention** — automatic Git initialization is now skipped if `dcr new` or `dcr init` is executed inside an already existing Git repository.
* **VCS verification tests** — added `new_vcs_options_work` and `init_vcs_options_work` integration tests to ensure reliable repository behavior.
### Changed
* **Complete removal of `git2` dependency** — all Git actions (dependency fetching, VCS setup, status checks) are now delegated to the system `git` executable via `Command`. This simplifies compilation and drops the need for `vendored` and `openssl` features.
* **Migrated from `reqwest` to `ureq`** — replaced the heavy `reqwest` crate in `flag_update.rs` with the lightweight synchronous `ureq 2.10` client, reducing overhead and the final binary size.
## 0.7.2 (2026-06-07)
### Added
* `default_target_triple()` now respects `target_env` — Linux (gnu/musl) and Windows (msvc/gnu) use the correct environment instead of hardcoded values.
### Fixed
* **macOS Apple Silicon builds failed with `_main` undefined** — `--target=` is now passed to ldflags, not just cflags. `default_target_triple()` uses `std::env::consts::ARCH` on macOS instead of hardcoded `x86_64`.
* **GitHub Stars and GPL-3.0 badges not rendering in README** — badge block converted to pure HTML.
### Changed
* Default target resolution extracted into shared `default_target_triple()` — removed duplication across build, run, clean.
## 0.7.1 (2026-06-02)
### Added
* **`--help` for all commands** — `dcr build --help`, `dcr run --help`, `dcr new --help`,
`dcr init --help`, `dcr clean --help`, `dcr add --help`, `dcr fmt --help`,
`dcr setup --help`, `dcr tree --help`, `dcr gen --help`, `dcr --update --help`,
`dcr test --help`. All output uses styled headers (green) and usage lines (cyan).
* **Man pages** — 12 troff pages in `man/man1/`: `dcr.1`, `dcr-build.1`,
`dcr-run.1`, `dcr-new.1`, `dcr-init.1`, `dcr-clean.1`, `dcr-add.1`, `dcr-test.1`,
`dcr-gen.1`, `dcr-fmt.1`, `dcr-tree.1`, `dcr-setup.1`.
* **Man pages in all packaging** — install.sh, install_bsd.sh, AUR PKGBUILD,
Debian (cargo-deb), RPM (cargo-generate-rpm), Nix (postInstall), Homebrew
(resource), Snap, GitHub Release assets.
* **Project name validation** — `dcr init` and `dcr new` now validate names before
creating files. Only ASCII letters, digits, `_` and `-` are allowed.
* **`documentation` and `homepage` fields** — added to `Cargo.toml`.
* **Release profile optimizations** — `opt-level = "z"`, LTO, `codegen-units = 1`,
`panic = "abort"`, `strip = true` for smaller binaries.
* **Linux i686, armv7, riscv64 targets** — added to release workflow and install scripts.
* **Linux musl i686, armv7 targets** — cross-compiled via zigbuild in CI.
* **AUR packages** — `dcr-dev`, `dcr-dev-bin` publishing workflow.
* **Snap publishing** — automated Snapcraft publishing in CI.
* **Snap badge** — in README.
### Changed
* **`validate_package_name` made public** — callable from CLI commands.
* **README platform table** — reorganized: libc variants as separate OS rows,
removed extra columns. Linux architecture list updated.
* **`gen.rs` no-args output** — now uses styled output instead of raw `eprintln!`.
* **`tree.rs`, `fmt.rs`, and `setup.rs`** — now accept arguments for `--help`.
* **README install commands** — `| bash` → `| sh` for POSIX compatibility.
### Fixed
* **`dcr new \<invalid-name>` creates directory then fails** — validation now
happens before any file operations.
* **`dcr init` on invalid directory name** — same fix.
* **Man pages missing in installed packages** — now shipped in all formats.
* **Windows drive letter false positive** — in dependency file parser.
* **CRLF (`\r\n`) breaks dependency parser** — now handles mixed line endings.
* **Newline after backslash not consumed** — in `parse_d_file` escape handling.
## 0.7.0 (2026-06-01)
### Added
* **OpenBSD and NetBSD target support** — full platform routing with dynamic target triples using `std::env::consts::ARCH` and `std::env::consts::OS`. Affects `build`, `run`, `clean` commands and the platform module.
* **`src/platform/bsd.rs`** — new BSD platform module (shared by FreeBSD, OpenBSD, NetBSD) providing `bin_path`, `lib_path`, `elf_path`, `efi_path`, `shared_lib_path`.
* **`build.out_dir` config option** — custom output directory that overrides the default `target/\<triple>/\<profile>` path for final artifacts. Supported in `build`, `run`, and config validation.
* **`dcr fmt` command** — new CLI command that formats all C/C++ source files (`*.c`, `*.cpp`, `*.h`, `*.hpp`) in `src/` and `tests/` using `clang-format`.
* **Incremental linking** — `needs_link()` in `common.rs` checks if any object file is newer than the linked output, skipping unnecessary relinking. Implemented for all backends (`unix_cc`, `msvc`, `gas`, `nasm`).
* **`build.kind = "none"` and `"custom"`** — two new project kinds for special build scenarios that don't produce standard artifacts.
* **`install_bsd.sh`** — POSIX-compliant installation script for BSD systems (FreeBSD, OpenBSD, NetBSD) with binary download and source build modes.
* **Linux ARM64 support in `install.sh`** — added `Linux:aarch64|Linux:arm64` target detection for pre-built binary downloads.
* **BSD OS detection in `install.sh`** — detects FreeBSD, OpenBSD, NetBSD and determines target triple.
* **`rust-toolchain.toml`** — explicit toolchain pinning to `stable` channel.
* **Integration tests** — `build_with_target_config` (verifies `build.target = "linux"`) and `build_with_out_dir` (validates custom output directory).
* **`get_build_string_with_profile` made `pub`** — so `run.rs` can determine custom output directory configuration.
### Changed
* **`build.target` semantics changed** — now strictly contains a target triple (e.g., `x86_64-unknown-linux-gnu`) or short name (`linux`, `macos`, `windows`). No longer used as custom output directory — this functionality moved to `build.out_dir`.
* **`build.standard` made optional** — changed from `String` to `Option\<String>`. Validation only enforces non-empty for non-ASM languages. Skipped in `dcr.toml` output if empty.
* **`dcr run` with `out_dir`** — now determines target directory respecting `build.out_dir` via `get_build_string_with_profile()` from `build.rs`.
* **`collect_sources()` returns empty vector** instead of error when no sources are found, allowing `kind = "none"` or `kind = "custom"` projects with no source files.
* **CI/CD release workflow refactored** — `git2` made target-specific (no vendored-openssl on Windows), Zig-based cross-compilation for non-x86_64 Linux targets, Arch Linux package version cleanup (dashes → dots), `gmake` symlink for NetBSD.
* **README compatibility table** — FreeBSD, OpenBSD, NetBSD build/run status upgraded from "community/best-effort" to "officially supported".
* **Documentation updated** — `build-section.md` describes new `build.target` and `build.out_dir` fields. `target-directory.md` rewritten to clarify the distinction.
### Fixed
* **stdout/stderr not inherited in `dcr run`** — child process output was captured and manually printed, breaking interactive programs. Fixed by switching to `Command::status()`.
* **Race condition in release CI** — matrix build jobs could upload assets to a release that didn't exist yet. Fixed by adding a dedicated `create-release` job.
* **Release GHA — stable toolchain override** — fixed Rust toolchain override issues in CI.
* **Arch Linux package version sanitization** — version strings with dashes (e.g., `0.7.0-dev`) are invalid for `pkgver`. Fixed by replacing dashes with dots.
* **GPG permissions after Docker** — Docker operations changed GPG directory ownership. Fixed by running `chown` after Docker commands.
* **RPM artifact paths** — RPM artifacts were placed in `rpm/x86_64/` instead of `fedora/x86_64/`. Fixed in Dexoron Packages Index workflow.
* **JSON parsing reliability in `install.sh`** — added `jq` as primary parser with `python3` fallback for dev channel release lookup.
### Removed
* **`format_roots()` helper function** — removed from `common.rs`. Was only used by the old error handling path in `collect_sources()`.
* **Per-distribution artifact download steps** — three separate `actions/download-artifact` steps replaced with unified `gh release download --clobber`.

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---
sidebar_label: Build commands (build, run, clean)
---
# Build Commands
## `dcr build`
Builds the project according to `dcr.toml`.
```bash
dcr build # debug profile
dcr build --release # release build
dcr build --debug # explicit debug
dcr build --target aarch64-unknown-linux-gnu
dcr build --force # full rebuild (also re-runs build.steps / post_steps)
dcr build --clean # clean + build
dcr build --verbose # show compilation commands
dcr build --workspace pkg-a # build specific workspace package
```
Artifacts: `target/\<triple>/\<profile>/\<binary-name>` (Linux with explicit target).
With `[archive]` in `dcr.toml`, a FAT disk image is packed after a successful build.
## `dcr run`
Builds (if sources are newer than artifacts) and runs the binary.
```bash
dcr run
dcr run --release
dcr run --force # force rebuild then run
```
On a **workspace-only** root: if `[run].cmd` is set, that command is used after build; otherwise DCR delegates to a workspace member.
## `dcr clean`
Removes `target/` directory (or `target/\<target>/\<profile>`).
```bash
dcr clean
dcr clean --release # target/release/ only
dcr clean --target windows # target/x86_64-pc-windows-msvc/
dcr clean --all # clean all workspace packages
```

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---
sidebar_label: Dependency commands (add, tree)
---
# Dependency Commands
## `dcr add \<name> [source]`
Adds a dependency to `dcr.toml`.
```bash
dcr add fmt # registry lookup
dcr add mylib ../path/to/lib # path as source
dcr add mylib path:./lib # explicit path prefix
dcr add mylib git:https://github.com/user/repo # explicit git prefix
dcr add mylib github:user/repo # GitHub shorthand
dcr add mylib gitlab:user/repo # GitLab shorthand
```
Source prefixes:
* `path:` — local path
* `git:` — generic git URL
* `github:` — expands to `https://github.com/\<user>/\<repo>`
* `gitlab:` — expands to `https://gitlab.com/\<user>/\<repo>`
* `http://` / `https://` / `git@` — full URL
Flags:
* `--branch \<name>` — git branch
* `--tag \<name>` — git tag
* `--rev \<hash>` — git commit
If source is omitted — DCR searches connected registries. A bare relative or absolute path is accepted as a path dependency.
## `dcr tree`
Displays the project dependency tree.
```bash
dcr tree
```
Example output:
```
my-app v0.1.0
├── fmt (registry)
│ └── spdlog (registry)
└── catch2 (registry)
```
For path dependencies, recursively shows their own dependencies (from their `dcr.toml`).

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---
sidebar_label: Gen commands (vscode, clion, ...)
---
# Gen Commands
## `dcr gen \<target>`
Generates IDE integration files.
### vscode
```bash
dcr gen vscode
```
Creates:
* `.vscode/tasks.json` — `build` task (dcr build)
* `.vscode/launch.json` — debug launch configuration
* `.vscode/settings.json` — C/C++ settings (clangd paths, includes)
* `.vscode/extensions.json` — recommended extensions (vscode-clangd, vscode-lldb)
### clion
```bash
dcr gen clion
```
Creates:
* `.idea/externalTools.xml` — external tools (build, run, clean, test)
* `.idea/customTargets.xml` — custom build targets
* `.idea/misc.xml` — C/C++ project settings
* `.idea/runConfigurations/\<name>.xml` — per-binary run configurations
### compile-commands
```bash
dcr gen compile-commands
```
Generates `compile_commands.json` — standard format for clangd, cpptools, static analyzers.
### project-info
```bash
dcr gen project-info
```
Outputs JSON array with project metadata:
```json
[
{
"name": "my-app",
"version": "0.1.0",
"root": "/path/to/project",
"profile": "debug",
"language": "c",
"standard": "c17",
"cxx_standard": null,
"compiler": "/usr/bin/clang",
"kind": "bin",
"sources": ["src/main.c"],
"include_dirs": ["src"],
"lib_dirs": [],
"libs": [],
"cflags": ["-std=c17", "-O0", "-g"],
"ldflags": []
}
]
```

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---
sidebar_label: Project commands (new, init)
---
# Project Commands
## `dcr new \<name>`
Creates a new project with a standard structure and `dcr.toml`. The `name` argument is required.
Only ASCII letters, digits, underscores `_` and hyphens `-` are allowed in the project name.
```bash
dcr new my-app
dcr new my-app --vcs none
```
Flags:
* `--vcs \<git|none>` — Initialize version control system (defaults to `git` if available, or `none`).
Generates:
* `dcr.toml` with basic fields
* `src/main.c` with a `main` template
## `dcr init`
Initializes a DCR project in the current (empty) directory.
```bash
dcr init
dcr init --vcs none
```
Flags:
* `--vcs \<git|none>` — Initialize version control system (defaults to `git` if available, or `none`).
The project name is taken from the current directory name. The directory name must follow the same naming rules as `dcr new`.

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---
sidebar_label: Quality commands (test, fmt)
---
# Quality Commands
## `dcr test`
Runs tests.
```bash
dcr test # debug profile
dcr test --release # release profile
dcr test --debug # explicit debug
dcr test --help # detailed help
```
Before first use, initialize tests:
```bash
dcr test --init
```
This creates `tests/dcr_test.h` (framework) and `tests/test.c` (template).
What `dcr test` does:
1. Builds the project
2. Collects `tests/*.c` files (`.c` only, not `.cpp`)
3. Compiles and links each test file
4. Runs each test binary
5. Prints summary: TOTAL, PASS, SKIP, FAIL
6. Returns non-zero exit code on any FAIL
## `dcr fmt`
Formats C/C++ source files using `clang-format`.
```bash
dcr fmt
```
Processes: `src/**/*.{c,cpp,cxx,cc,h,hpp,hxx,hh}` and `tests/**/*.{c,cpp,cxx,cc,h,hpp,hxx,hh}`.
Uses `.clang-format` at the project root (if present), otherwise default clang-format style.
## `dcr lint`
Runs `clang-tidy` on C/C++ source files for static analysis.
```bash
dcr lint # show diagnostics
dcr lint --fix # apply fixes automatically
dcr lint --help # detailed help
```
Processes: `src/**/*.{c,cpp,cxx,cc}` and `tests/**/*.{c,cpp,cxx,cc}`.
Without `--fix`, clang-tidy reports warnings and errors without modifying files.
With `--fix`, clang-tidy applies automatic suggestions in place.

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sidebar_label: System commands (setup, --help, ...)
---
# System Commands
## `dcr setup`
Shows configured registries from `~/.dcr/config.toml`.
```bash
dcr setup
```
If `~/.dcr/config.toml` is not found, DCR returns an error. Create it manually:
```toml
[registry.default]
url = "https://index.dcr.pm"
priority = 1
```
## `dcr --help`
Shows help for all commands.
```bash
dcr --help
```
## `dcr --version`
Shows version and target triple.
```bash
dcr --version # dcr 0.7.0 (x86_64-unknown-linux-gnu)
```
## `dcr --update`
Self-update. Downloads the latest release binary from GitHub Releases and replaces the current one.
```bash
dcr --update
```
Features:
* Auto-detects platform and architecture
* Warns if installed via AUR (use package manager instead)
* Works on Linux, macOS, Windows

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sidebar_label: Contributing
---
# Contributing
## Setup
```bash
git clone https://github.com/dexoron/dcr
# or a source mirror: GitVerse / SourceCraft / SourceForge / GitLab (see README)
cd dcr
cargo build
```
## Code style
All code must be formatted with `cargo fmt`:
```bash
cargo fmt
```
## Linting
```bash
cargo clippy --all-targets -- -D warnings
```
## Tests
```bash
cargo test --all-targets
```
## PR process
1. Fork the repository
2. Create a branch: `git checkout -b feature/description`
3. Make changes
4. Run `cargo fmt && cargo clippy && cargo test`
5. Open a Pull Request
## CI
CI runs (see `.github/workflows/ci.yml`):
* `cargo fmt --check`
* `cargo clippy` (default + `--all-features`)
* `cargo check --all-targets --all-features`
* Unit + integration tests on Linux, macOS, Windows
* Extra Linux job with `--features archive` (FAT images)
* Tools on runners: clang, nasm, clang-format/tidy (Linux)

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---
sidebar_label: FAQ
---
# FAQ
## Registry not found
```
error: registry not found
```
**Solution:** Make sure `~/.dcr/config.toml` exists:
```toml
[registry.default]
url = "https://index.dcr.pm"
priority = 1
```
And check `DCR_INDEX_PATH`:
```bash
echo $DCR_INDEX_PATH
```
## Compiler not found
```
error: compiler not found
```
**Solution:** Ensure a compiler is installed and available in PATH.
```bash
which gcc
which clang
```
Or specify explicitly via `[toolchain]` in `dcr.toml`.
## Ctrl+C during build
DCR handles SIGINT: interrupts the current compilation and exits with non-zero code.
## How to create a library?
See [Library Recipe](/docs/recipes/library-project).
## How to cross-compile to Windows?
See [Cross-Compile Recipe](/docs/recipes/cross-to-windows).
## How to create a multi-package project?
See [Workspace Recipe](/docs/recipes/multi-package-workspace).
## Bootloader / pure NASM OS image
Use `kind = "flat-bin"` (NASM `-f bin`) and optional `[archive]` for a FAT disk image.
See [OS-dev recipe](/docs/recipes/os-flat-bin-archive).
## How do I choose a download mirror?
`dcrup install` uses `--mirror auto` by default and tries **cf → gh → sf → ya**.
```bash
dcrup install stable --mirror cf
export DCRUP_MIRROR=ya
```
## Lock file
`dcr.lock` is created during builds (`dcr build`) when registry dependencies are present. To force an update — delete `dcr.lock` and run `dcr build`.

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---
sidebar_label: First steps
---
# First Steps
## Create a project
```bash
dcr new my-app
cd my-app
```
Structure:
```
my-app/
├── dcr.toml
└── src/
└── main.c
```
`dcr.toml`:
```toml
[package]
name = "my-app"
version = "0.1.0"
type = "none"
[build]
language = "c"
standard = "c11"
compiler = "clang"
kind = "bin"
```
## Build
```bash
dcr build
```
Output — `target/\<triple>/debug/my-app` (Linux) or `target/debug/my-app.exe` (Windows).
Build profiles:
```bash
dcr build --release # release build
dcr build --debug # debug (default)
```
## Run
```bash
dcr run
```
Builds (if needed) and runs the binary.
## First test
```bash
dcr test --init # create test template
dcr test # run tests
```
## Formatting
```bash
dcr fmt # clang-format with .clang-format
```
## Linting
```bash
dcr lint # clang-tidy checks
dcr lint --fix # apply fixes automatically
```

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---
sidebar_label: Installation
---
# Installation
## dcrup (recommended)
Install and switch DCR versions (stable / dev / night, pin `0.8.2`, optional build from source).
### Linux / macOS / BSD / Windows (bash)
```sh
curl -fsSL https://sh.dcr-tool.ru | sh -s -- self-install
export PATH="$HOME/.dcr/bin:$PATH"
dcrup install stable
```
Non-interactive install of DCR in one shot:
```sh
curl -fsSL https://sh.dcr-tool.ru | sh -s -- install stable
export PATH="$HOME/.dcr/bin:$PATH"
```
### Windows (PowerShell)
```powershell
irm https://ps1.dcr-tool.ru | iex
# or download then run:
# irm https://ps1.dcr-tool.ru -OutFile dcrup.ps1
# powershell -File .\dcrup.ps1 self-install
# $env:Path += ";$env:USERPROFILE\.dcr\bin"
dcrup install stable
```
Optional cmd bootstrap (if you prefer `curl` of the cmd shim):
```bat
curl -fsSL -o dcrup.cmd https://cmd.dcr-tool.ru
```
After `self-install`, the command is **`dcrup`** (no `.sh` / `.ps1`): shims live in `~/.dcr/bin` (Unix) or `%USERPROFILE%\.dcr\bin` (Windows `dcrup.cmd`).
### Common dcrup commands
```sh
dcrup install stable # latest stable prebuilt (auto: cf → gh → sf → ya)
dcrup install 0.8.2 # pin → 0.8.2@stable
dcrup install 0.8.2@dev
dcrup install stable --libc musl # Linux: musl asset (default: gnu)
dcrup install stable --mirror cf # CloudFlare CDN
dcrup install stable --mirror ya # Yandex CDN (RU fallback)
dcrup install stable --build # cargo build --features archive
dcrup install night # always build from branch dev HEAD
dcrup default 0.8.2
dcrup update
dcrup list
dcrup show
dcrup which
```
Layout: `~/.dcr/toolchains/\<id>/dcr` and `~/.dcr/bin/dcr` → active version.
### Download mirrors
Prebuilt installs try **cf → gh → sf → ya** unless you pin a host.
| Code | URL | Notes |
| ---- | ------------------------------------------------------------------------------------------------------------ | -------------------------- |
| `cf` | `https://cdn-global.dcr-tool.ru/\<tag>/\<asset>` | CloudFlare CDN (worldwide) |
| `gh` | `https://github.com/dexoron/dcr/releases/download/\<tag>/\<asset>` | GitHub Releases |
| `sf` | `https://sourceforge.net/projects/dcr-tool/files/\<tag>/\<asset>/download` | SourceForge |
| `ya` | `https://cdn-ru.dcr-tool.ru/\<tag>/\<asset>` | Yandex CDN (RU fallback) |
```sh
dcrup install stable --mirror auto # default
export DCRUP_MIRROR=cf # persist for this shell
```
---
## Arch Linux (AUR)
```sh
yay -S dcr
```
## macOS / Linux (Homebrew)
```sh
brew tap dexoron/dexoron
brew install dcr
```
## Snap (Linux)
```sh
sudo snap install dcrup
```
> If classic Snap Store publishing is unavailable, install the `.snap` from [GitHub Releases](https://github.com/dexoron/dcr/releases/latest) with `--dangerous`.
## Nix (flake)
```sh
nix run github:dexoron/dcr
nix profile install github:dexoron/dcr
```
## Cargo (crates.io)
```sh
cargo install dcr
```
Note: crates.io builds may omit optional features. For FAT disk images (`[archive]`), prefer release binaries or:
```sh
cargo install dcr --features archive
```
## From source
```sh
git clone https://github.com/dexoron/dcr.git
cd dcr
cargo build --release --features archive
ln -sf "$PWD/target/release/dcr" ~/.local/bin/dcr
# or manage versions with dcrup install night / --build
```
## Post-install
```bash
dcr --version
dcrup show # if installed via dcrup
```
Man pages (package installs / release assets):
```bash
man dcr
man dcr-build
```
Registry (optional) — `~/.dcr/config.toml`:
```toml
[registry.default]
url = "https://index.dcr.pm"
priority = 1
```

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---
sidebar_label: IDE Integration
---
# IDE Integration
## VS Code
Install the recommended [DCR extension by Dexoron-Labs](https://marketplace.visualstudio.com/items?itemName=Dexoron-Labs.dcr). Do not install Microsoft C/C++ extensions for DCR projects: DCR uses `clangd`. MS C/C++ is acceptable only when you need its debugger.
Recommended companion extensions:
* [Even Better TOML](https://marketplace.visualstudio.com/items?itemName=tamasfe.even-better-toml)
* [CodeLLDB](https://marketplace.visualstudio.com/items?itemName=vadimcn.vscode-lldb), or MS C/C++ for debugger support only
```bash
dcr gen vscode
```
Generates in `.vscode/`:
| File | Purpose |
| ----------------- | -------------------------------------------- |
| `tasks.json` | `build` task (dcr build) |
| `launch.json` | Debug launch configuration |
| `settings.json` | clangd/IntelliSense: include paths, standard |
| `extensions.json` | Recommends vscode-clangd, vscode-lldb |
## CLion
```bash
dcr gen clion
```
Generates in `.idea/`:
| File | Purpose |
| ------------------------------------------------ | ----------------------------------------- |
| `externalTools.xml` | Build, Run, Clean, Test as external tools |
| `customTargets.xml` | Custom build targets |
| `misc.xml` | C/C++ project settings |
| `runConfigurations/\<name>.xml` | Per-binary run configurations |
## compile_commands.json
```bash
dcr gen compile-commands
```
Generates `compile_commands.json` at project root. Standard format for clangd, C/C++ IntelliSense, static analyzers.
## project-info
```bash
dcr gen project-info
```
Outputs JSON array with project metadata (see [gen-commands](/docs/commands/gen-commands)).

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---
sidebar_label: License
---
# License
## DCR
DCR itself is [GPL-3.0-or-later](https://spdx.org/licenses/GPL-3.0-or-later.html) licensed.
> **Note:** DCR is a build tool, not a library. The GPL applies only to DCR's own source code. Projects built with DCR are not subject to DCR's license — their licensing is determined solely by their own code and dependencies.
## Rust dependencies
DCR is written in Rust. The following notable Rust crates are statically linked:
| Crate | License |
| ------------------------------------------------------- | ----------------- |
| [`ureq`](https://crates.io/crates/ureq) | MIT OR Apache-2.0 |
| [`serde`](https://crates.io/crates/serde) | MIT OR Apache-2.0 |
| [`toml`](https://crates.io/crates/toml) | MIT OR Apache-2.0 |
| [`toml_edit`](https://crates.io/crates/toml_edit) | MIT OR Apache-2.0 |
| [`serde_json`](https://crates.io/crates/serde_json) | MIT OR Apache-2.0 |
| [`sha2`](https://crates.io/crates/sha2) | MIT OR Apache-2.0 |
| [`glob`](https://crates.io/crates/glob) | MIT OR Apache-2.0 |
| [`self-replace`](https://crates.io/crates/self-replace) | MIT OR Apache-2.0 |
| [`ctrlc`](https://crates.io/crates/ctrlc) | MIT OR Apache-2.0 |
Full dependency tree is available in [`Cargo.lock`](https://github.com/dexoron/dcr/blob/main/Cargo.lock). The overwhelming majority are dual-licensed under MIT OR Apache-2.0.
## Additional credits
* DCR's CLI design and project model are inspired by [Cargo](https://doc.rust-lang.org/cargo/).

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---
sidebar_label: Cross-compile to Windows
---
# Cross-Compile to Windows from Linux
Building a Windows binary on Linux using mingw-w64.
## Install toolchain
```bash
# Ubuntu/Debian
sudo apt install mingw-w64
# Fedora
sudo dnf install mingw64-gcc mingw64-binutils
```
## Configuration
```toml
[package]
name = "my-app"
version = "0.1.0"
type = "none"
[build]
language = "c"
standard = "c11"
compiler = "clang"
kind = "bin"
target = "x86_64-pc-windows-gnu" # explicit mingw, not msvc
```
## Build
```bash
dcr build --target x86_64-pc-windows-gnu --release
```
Artifact: `target/x86_64-pc-windows-gnu/release/my-app.exe`.
## Custom toolchain
```toml
[toolchain]
cc = "x86_64-w64-mingw32-gcc"
cxx = "x86_64-w64-mingw32-g++"
```

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---
sidebar_label: Library project
---
# Library Project
Creating a static library and using it in another project.
## Step 1: Create the library
```bash
dcr new my-lib
cd my-lib
```
`dcr.toml`:
```toml
[package]
name = "my-lib"
version = "0.1.0"
type = "none"
[build]
language = "c"
standard = "c11"
kind = "staticlib"
```
`src/my_lib.h`:
```c
#ifndef MY_LIB_H
#define MY_LIB_H
int add(int a, int b);
#endif
```
`src/my_lib.c`:
```c
#include "my_lib.h"
int add(int a, int b) { return a + b; }
```
## Step 2: Build
```bash
dcr build --release
```
Artifacts:
* `target/\<triple>/release/libmy-lib.a` (Linux)
* `target/release/my-lib.lib` (Windows)
* `target/include/` — header files
## Step 3: Use in another project
```bash
dcr new my-app
cd my-app
dcr add my-lib ../my-lib
```
Automatically:
* Adds include path to `target/include/` of the library
* Adds lib path to `target/\<triple>/release/`
* Links `libmy-lib.a` / `my-lib.lib`

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---
sidebar_label: Multi-package workspace
---
# Multi-Package Workspace
A project with three packages: two libraries and a binary.
## Structure
```
workspace/
├── dcr.toml # root workspace
├── lib-core/
│ ├── dcr.toml
│ └── src/core.c
├── lib-utils/
│ ├── dcr.toml
│ └── src/utils.c
└── app/
├── dcr.toml
└── src/main.c
```
## Root dcr.toml
```toml
[package]
name = "my-workspace"
version = "0.1.0"
type = "none"
[build]
inherit = true
language = "c"
standard = "c11"
workspace_only = true
[workspace.lib-core]
path = "lib-core"
[workspace.lib-utils]
path = "lib-utils"
deps = ["lib-core"]
[workspace.app]
path = "app"
deps = ["lib-core", "lib-utils"]
main = true
```
## Packages
`lib-core/dcr.toml`:
```toml
[package]
name = "lib-core"
version = "0.1.0"
type = "none"
[build]
kind = "staticlib"
```
`lib-utils/dcr.toml`:
```toml
[package]
name = "lib-utils"
version = "0.1.0"
type = "none"
[build]
kind = "staticlib"
```
`app/dcr.toml`:
```toml
[package]
name = "app"
version = "0.1.0"
type = "none"
[build]
kind = "bin"
```
## Build
```bash
cd workspace
dcr build # builds everything in correct order
dcr build --workspace app # only app (lib-core and lib-utils built as deps)
dcr run # builds and runs main package
```
Build order (topological sort):
1. `lib-core`
2. `lib-utils` (depends on lib-core)
3. `app` (depends on lib-core, lib-utils)

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---
sidebar_label: OS-dev (flat-bin + archive)
---
# Pure ASM / boot image (flat-bin + archive)
Minimal OS-dev style pipeline: assemble raw binaries with NASM, then pack a FAT floppy/image with an optional boot sector.
## Project layout
```
myos/
dcr.toml
src/
boot.asm # boot sector (512 bytes)
kernel.asm # payload
```
For multiple flat artifacts, use a **workspace** (one member per binary) or separate packages; a single `flat-bin` package produces one binary per source stem.
## Boot package (`flat-bin`)
```toml
[package]
name = "boot"
version = "0.1.0"
[build]
language = "asm"
compiler = "nasm"
kind = "flat-bin"
extension = "bin"
roots = ["src/boot.asm"]
```
```bash
dcr build
# → target/<…>/debug/boot.bin (NASM -f bin, no link)
```
## Disk image after build
```toml
[archive]
output = "target/{profile}/disk.img"
format = "fat12"
size = "1440K"
label = "MYOS"
bootsector = "target/{profile}/boot.bin"
[[archive.layout]]
from = "target/{profile}/kernel.bin"
to = "KERNEL.BIN"
```
* `format`: `fat12`, `fat16`, or `fat32`
* `size`: bytes or `K`/`KB`/`M`/`MB`/`G`/`GB` (default ~1.44 MiB)
* `bootsector`: written only when `offset` is omitted or `0`
* `from` may be a glob; `{profile}` is substituted in paths
## C kernel → flat binary
```toml
[build]
language = "c"
compiler = "clang"
kind = "flat-bin"
freestanding = true
filename = "kernel"
extension = "bin"
ldflags = ["-T", "linker.ld"]
```
Pipeline: objects → temporary linked ELF → `objcopy -O binary` → `kernel.bin`. Requires `objcopy` / `llvm-objcopy` in PATH.
## Other assemblers
| Tool | Notes |
| -------- | --------------------------------------------------------------------------------------- |
| **FASM** | Write `format binary` in the source; DCR writes `\<stem>.bin` directly |
| **GAS** | Assemble `.s` → obj → `objcopy -O binary` |
| **LLC** | `language = "llvm_ir"` → obj → objcopy |
| **MASM** | COFF obj → objcopy (needs binutils/LLVM objcopy) |
## Notes
* Single-file `roots` are supported: `roots = ["src/boot.asm"]`.
* `--force` re-runs `build.steps` / `build.post_steps` as well as recompilation.
* Prefer `kind = "elf"` if you need a relocatable ELF kernel without stripping to raw binary.

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---
sidebar_label: Build profiles
---
# Build Profiles
Profiles allow overriding `[build]` fields for specific build modes.
## Configuration
```toml
[build]
language = "c"
standard = "c17"
cflags = ["-Wall"]
[build.debug]
cflags = ["-O0", "-g"]
[build.release]
cflags = ["-O3", "-DNDEBUG"]
```
## Merge rules
Fields from `[build.\<profile>]` are merged on top of `[build]`:
* **Scalar fields** (strings, numbers, bools) — replaced
* **Arrays** (`cflags`, `ldflags`, ...) — **appended** (extend the `[build]` array)
Set `inherit = false` to disable array inheritance (only profile's own arrays are used).
## Built-in profiles
The default flags for each profile are composed from three config fields:
| Field | debug default | release default |
| ----------- | ------------------ | --------------- |
| `opt_level` | `"0"` | `"3"` |
| `debug` | `true` | `false` |
| `warnings` | `["all", "extra"]` | `[]` |
Which produce the equivalent compiler flags:
| Profile | Effective flags |
| --------- | ---------------------------------------------------------- |
| `debug` | `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDCR_DEBUG` |
| `release` | `-O3 -DNDEBUG` |
Additional build options can be toggled per-profile:
```toml
[build.release]
opt_level = "z"
lto = true
strip = true
panic = "abort"
codegen-units = "1"
[build.debug]
opt_level = "1"
debug = false
warnings = ["all", "error"]
```
## Target-specific profiles
```toml
[build.linux]
cflags = ["-DLINUX"]
[build.windows.debug]
cflags = ["-DWIN32", "-O0", "-g"]
```
Application order (highest priority first):
1. `[build.\<target>.\<profile>]`
2. `[build.\<profile>.\<target>]`
3. `[build.\<target>]`
4. `[build.\<profile>]`
5. `[build]`

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---
sidebar_label: Build system
---
# Build System
## Compiler Backends
DCR supports 7 compilation backends. Selection is automatic based on file extension and `build.compiler` value.
| Backend | Files | When used |
| --------- | --------------------------------- | ------------------------------------- |
| `unix_cc` | `.c`, `.cpp`, `.cxx`, `.cc`, `.S` | gcc/clang on Linux/macOS/BSD |
| `msvc` | `.c`, `.cpp`, `.cxx`, `.cc` | Windows (cl, clang-cl) |
| `gas` | `.s` | ARM/ARM64 assembler (no preprocessor) |
| `nasm` | `.asm`, `.s` | x86/x86_64 NASM assembler |
| `masm` | `.asm` | MASM (ml/ml64) on Windows |
| `fasm` | `.asm`, `.fasm` | Flat Assembler |
| `llvm_ir` | `.ll` | LLVM IR via `llc -filetype=obj` |
## Qt Support
DCR provides native Qt support for automatic meta-object handling (MOC, UIC, RCC).
Enable it by setting `build.qt = true` in `dcr.toml`. DCR will automatically detect Qt-related files (`.ui`, `.qrc`, `.h` with `Q_OBJECT`) and process them.
```toml
[build]
qt = true
```
*Note: Requires `qt6` modules (Core, Widgets, Gui, Svg) installed via `pkg-config`.*
Advanced customization is still possible via `build.steps` if special handling is needed:
```toml
[build.steps]
moc = "moc {in} -o {out}"
```
### Unix CC
* Compiler resolved via `resolve_compiler()`: `DCR_COMPILER` > `DCR_CC` > `[toolchain]` > `build.compiler` > `PATH`
* Supports `.d` files for header dependency tracking
* Flags: `-std=`, `-MMD -MF`, `-c -o`, `-I`, `-L`, `-l`
* Conditional flags based on config:
* `freestanding` or bare-metal target: `-ffreestanding` (compile), `-nostdlib -static` (link)
* `lto`: `-flto` (compile + link)
* `panic = "abort"`: `-fno-exceptions` (C++ only), `-fno-unwind-tables`, `-fno-asynchronous-unwind-tables`
### MSVC
* Supports cl.exe and clang-cl.exe
* Flags: `/std:`, `/Fo:`, `/Fe:`, `/I`, `/link`
### GAS / NASM / MASM / FASM / LLVM-IR
* GAS: `-I`, `-c -o`, `--defsym`
* NASM: `-I`, `-o`, `-D`, `-f` (format: win64/elf64/macho64/macho32/elf32; **`bin` when `kind = "flat-bin"`**)
* MASM: `/nologo /c /Fo\<obj> <source>`
* FASM: `<source> \<output>` (output path is the object file)
* LLVM IR: `-filetype=obj <source> -o \<output>`
## Incremental Builds
Three levels of incrementality:
1. **mtime** — if output is newer than all inputs, skip
2. **`.d` files** — header change tracking (including transitive)
3. **SHA256 fingerprint** — recompile if compiler flags changed (stored in `.dcr_fingerprint`)
## Parallel Compilation
* `thread::scope` for thread pool
* Atomic task queue (`AtomicU64`)
* Mutex on stdout (`OUTPUT_MUTEX`)
* Thread count = `available_parallelism()`, capped by `build.codegen-units` if set
## Build Kinds
| Kind | Type | Path (Linux example) |
| ----------- | ------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------- |
| `bin` | Executable | `target/\<triple>/\<profile>/\<name>` (.exe on Windows) |
| `staticlib` | Static library | `target/\<triple>/\<profile>/lib\<name>.a` (.lib) |
| `sharedlib` | Dynamic library | `target/\<triple>/\<profile>/lib\<name>.so` (.dll/.dylib) |
| `efi` | UEFI application | `target/\<triple>/\<profile>/\<name>.efi` |
| `elf` | ELF without stdlib | `target/\<triple>/\<profile>/\<name>` |
| `none` | Compile only, no link | — |
| `custom` | Full filename+extension control | `target/\<triple>/\<profile>/\<filename>.\<extension>` |
| `flat-bin` | Raw binary | ASM: `\<stem>.bin` (NASM `-f bin` / FASM / GAS·MASM·LLC via objcopy); C/C++: `\<name>.bin` (link + objcopy) |
## Disk images (`[archive]`)
After a successful build, if `[archive]` is present in `dcr.toml`, DCR formats a FAT volume and copies files from `layout` into the image. See [dcr.toml → archive](/docs/reference/dcr-toml#archive).
## Build Steps
DCR supports pre-build and post-build steps:
* `build.steps` — commands before compilation
* `build.post_steps` — commands after compilation
Substitutions: `{stem}`, `{in}`, `{out}`, `{profile}`, `{version}`, `{name}`.
Example Qt codegen via build steps:
```toml
[build.steps]
moc = "moc {in} -o {out}"
```
## pkg-config
Automatic lookup (read from raw config):
```toml
[build]
pkg_config = ["sdl2", "gl"]
```
DCR runs `pkg-config --cflags sdl2 gl` and `pkg-config --libs sdl2 gl` and adds results to compiler/linker flags.
## Variable Substitution
Supported variables:
| Variable | Description |
| ----------------------- | ---------------------------- |
| `{version}` | Package version |
| `{version_major}` | Major version part |
| `{version_minor}` | Minor version part |
| `{version_patch}` | Patch version |
| `{version_suffix}` | Suffix (e.g., `-rc1`) |
| `{version_suffix_dash}` | Suffix with dash |
| `{profile}` | Profile name (debug/release) |
| `{name}` | Package name |

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---
sidebar_label: Cross-compilation
---
# Cross-Compilation
## Short Names
DCR supports short platform names:
| Short Name | Full Triple |
| ---------- | -------------------------- |
| `linux` | `x86_64-unknown-linux-gnu` |
| `macos` | `x86_64-apple-darwin` |
| `windows` | `x86_64-pc-windows-msvc` |
```bash
dcr build --target windows
```
## Full Triples
```bash
dcr build --target aarch64-unknown-linux-gnu
dcr build --target x86_64-pc-windows-gnu # mingw
dcr build --target armv7-unknown-linux-gnueabihf
```
## clang --target
When using clang, DCR injects `--target=\<triple>` into CFLAGS.
```toml
[build]
compiler = "clang"
target = "aarch64-unknown-linux-gnu"
# Auto: cflags += ["--target=aarch64-unknown-linux-gnu"]
```
## Bare-Metal / Freestanding
For targets containing `none`, `-elf`, `eabi`, or `baremetal`, DCR automatically:
1. **Disables default flags** — no system include paths, no `-l` libc
2. **Injects `-ffreestanding`** at compile time and `-nostdlib -static` at link time
You can also enable freestanding mode explicitly:
```toml
[build]
freestanding = true
```
```bash
dcr build --target aarch64-none-elf
```
## Target Directory
By default, the compilation output directories are structured as follows:
* **Linux and BSD**: Always output to `target/\<triple>/\<profile>/` (using host triple if no target is specified).
* **macOS and Windows (without target)**: Output to `target/\<profile>/`.
* **macOS and Windows (with explicit target)**: Output to `target/\<triple>/\<profile>/`.

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sidebar_label: dcr.toml overview
---
# dcr.toml
Main project configuration file. Located at the project root.
## Structure
```toml
[package]
# required fields
[build]
# build settings
[build.debug] # optional: debug override
[build.release] # optional: release override
[build.linux] # optional: Linux override
[build.windows] # optional: Windows override
[build.windows.debug] # target + profile combination
[toolchain]
# compiler/linker paths
[dependencies]
# project dependencies
[workspace]
# multi-package configuration
[run]
# run settings
[archive]
# optional: pack FAT disk image after build
```
## [package]
| Field | Required | Description |
| ------------- | -------- | --------------------------------------------------------------------------------------------------------------- |
| `name` | yes | Project name |
| `version` | yes | Semantic version of the **project** |
| `dcr-version` | no | Semver of the **dcr tool** this project targets. Written by `dcr new` / `dcr init` to the current tool version. |
| `type` | no | `app`, `lib`, `none` (defaults to `"none"`) |
| `license` | no | SPDX license identifier |
| `author` | no | Author |
```toml
[package]
name = "my-app"
version = "0.1.0"
dcr-version = "0.8.4"
type = "app"
license = "MIT"
author = "John Doe"
```
### `package.dcr-version`
Optional pin of the DCR CLI the project was written for. On every `dcr.toml` load:
| Situation | Behaviour |
| ------------------------------ | ---------------------------------------------------------- |
| Field missing / empty | Warning: add `dcr-version` (set by `dcr new` / `dcr init`) |
| Running dcr **older** than pin | Warning: upgrade dcr (`dcr --update`) |
| Running dcr **newer** than pin | Warning: review changelog, bump the pin when ready |
| Equal | Silent |
| Invalid semver | Warning once, field ignored |
Never fails the command — warnings only. Pre-release suffixes (`1.0.0-dev`) are ignored for comparison (`1.0.0-dev` ≡ `1.0.0`).
## [build]
...
* `build.qt` — (bool) Enable automatic Qt meta-object handling (MOC, UIC, RCC). Requires `qt6` modules installed via `pkg-config`.
| Field | Default | Description |
| ---------------- | ------------- | --------------------------------------------------------------------------------------------------------- |
| `language` | `"c"` | `"c"`, `"c++"`, `"cpp"`, `"cxx"`, `"asm"`, `"llvm_ir"`, `"llvm-ir"`, `"ll"` (optional, defaults to `"c"`) |
| `standard` | `"c11"` | C standard (`c11`, `c17`, `c23`) |
| `cxx_standard` | — | C++ standard (`c++17`, `c++20`, `c++23`) |
| `compiler` | `"clang"` | Preferred compiler (optional, defaults to `"clang"`) |
| `kind` | `"bin"` | `bin`, `staticlib`, `sharedlib`, `efi`, `elf`, `none`, `custom`, `flat-bin` |
| `target` | host | Target triple for cross-compilation |
| `platform` | `"native"` | `native`, `efi` |
| `cflags` | `[]` | Additional C/C++/ASM flags |
| `ldflags` | `[]` | Additional linker flags |
| `filename` | `""` | Custom output file name |
| `extension` | `""` | Custom file extension (for `flat-bin`, default is `bin`) |
| `roots` | `["src"]` | Source roots: directories and/or individual source/header files |
| `exclude` | `[]` | Exclude patterns |
| `include` | `[]` | Additional include directories |
| `src_disable` | `false` | Disable auto source discovery |
| `inherit` | `false` | Inherit build from workspace root |
| `clean` | `[]` | Glob patterns for custom clean paths |
| `out_dir` | `""` | Custom output directory |
| `workspace_only` | `false` | Workspace-only, not built standalone (no `language`/`compiler` required) |
| `freestanding` | `false` | Compile in freestanding mode (`-ffreestanding` + `-nostdlib -static`) |
| `opt_level` | — | Optimization level: `0`-`3`, `"s"`, `"z"` (derived from profile if omitted) |
| `debug` | profile-based | Emit debug symbols (`-g`): `true` in debug, `false` in release |
| `lto` | `false` | Link-time optimization (`-flto` for both compiler and linker) |
| `strip` | `false` | Strip symbols from output (`-s` in ldflags) |
| `warnings` | `[]` | Warning flags (e.g. `"all"`, `"extra"`, `"pedantic"`); engine adds `-Wall -Wextra` in debug if empty |
| `panic` | `""` | Panic strategy: `"abort"` disables exceptions and unwind tables |
| `codegen-units` | `""` | Max parallel compilation jobs (`"0"` = auto) |
| `qt` | `false` | Enable automatic Qt meta-object handling (MOC, UIC, RCC) |
Settings from raw config (not in typed struct):
* `pkg_config` — list of pkg-config packages
* `ldscript` — linker script path
* `build.steps` / `build.post_steps` — codegen steps
## Per-language overrides: `[build.c]`, `[build.cxx]`, `[build.asm]`, `[build.llvm_ir]`
Each language can have its own table that overrides the flat `[build]` settings:
```toml
[build]
compiler = "clang"
standard = "c11"
[build.c]
standard = "c23"
compiler = "gcc"
[build.cxx]
standard = "c++23"
compiler = "g++"
[build.asm]
compiler = "nasm"
flags = ["-felf64"]
[build.llvm_ir]
compiler = "llc"
```
The flat `[build]` acts as fallback; per-language tables take precedence for their language.
Example:
```toml
[build]
language = "c++"
standard = "c23"
cxx_standard = "c++23"
compiler = "clang"
kind = "sharedlib"
cflags = ["-Wall", "-Wextra"]
opt_level = "z"
lto = true
strip = true
panic = "abort"
codegen-units = "2"
```
## [toolchain]
```toml
[toolchain]
cc = "/usr/bin/clang"
cxx = "/usr/bin/clang++"
as = "/usr/bin/as"
ar = "/usr/bin/ar"
ld = "/usr/bin/ld.lld"
```
Raw config also supports `uic`, `moc`, `rcc` for Qt codegen.
## [dependencies]
See [dependencies](/docs/reference/dependencies).
## [run]
```toml
[run]
cmd = "./target/{profile}/{name}"
```
Substitutions:
* `{version}` — package version
* `{version_major}`, `{version_minor}`, `{version_patch}`, `{version_suffix}`, `{version_suffix_dash}` — version parts
* `{profile}` — debug / release
* `{name}` — package name
Default `cmd` = `./target/{profile}/{name}` (macOS/Windows) or `./target/\<triple>/\<profile>/\<name>` (Linux).
## [workspace]
See [workspaces](/docs/reference/workspaces).
## [archive]
Optional post-build step: format a FAT volume and copy built artifacts into a disk image. Runs after a successful package build (and after workspace member builds that define `[archive]`).
Requires DCR built with the `archive` Cargo feature (`cargo build --features archive`). Release binaries include this feature.
| Field | Required | Description |
| ------------ | -------- | ------------------------------------------------------------------------------------------- |
| `output` | yes | Image path relative to project root (`{profile}` allowed) |
| `format` | yes | `fat12`, `fat16`, or `fat32` |
| `size` | no | Image size: bytes or `K`/`KB`/`M`/`MB`/`G`/`GB` (default `1474560` ≈ 1.44 MiB) |
| `offset` | no | Byte offset of the FAT volume inside the image (default `0`) |
| `label` | no | Volume label (max 11 chars, default `VOLUME`) |
| `bootsector` | no | Path to a 512-byte boot sector written at offset 0 when `offset` is 0 (`{profile}` allowed) |
| `layout` | no | List of `{ from, to }` entries (files or globs → path inside the volume) |
```toml
[archive]
output = "target/{profile}/disk.img"
format = "fat12"
size = "1440K"
label = "MYOS"
bootsector = "target/{profile}/boot.bin"
[[archive.layout]]
from = "target/{profile}/kernel.bin"
to = "KERNEL.BIN"
[[archive.layout]]
from = "assets/*"
to = "/"
```
Typical pairing with `kind = "flat-bin"` (NASM `-f bin`) for bootloaders and pure-ASM OS images.
## `flat-bin` (kind)
Produces a raw binary (default extension `bin`) for boot sectors, kernels, and freestanding payloads.
### Assemblers
| Tool | Language / compiler | How flat-bin is produced |
| ---- | ------------------------------------------ | -------------------------------------------- |
| NASM | `language = "asm"`, `compiler = "nasm"` | `-f bin` → `\<stem>.bin` |
| FASM | `compiler = "fasm"` | direct write (use `format binary` in source) |
| GAS | `compiler = "as"` / `"gas"` | assemble → `objcopy -O binary` |
| MASM | `compiler = "ml"` / `"ml64"` | assemble → `objcopy -O binary` |
| LLC | `language = "llvm_ir"`, `compiler = "llc"` | `-filetype=obj` → `objcopy -O binary` |
```toml
[build]
language = "asm"
compiler = "nasm"
kind = "flat-bin"
extension = "bin"
roots = ["src/boot.asm"]
```
### C / C++
Compile all sources, link with `-nostdlib -static` (plus your `ldflags` / `ldscript`), then convert the intermediate ELF/PE with `objcopy -O binary` to `\<filename|name>.bin`.
```toml
[build]
language = "c"
compiler = "clang"
kind = "flat-bin"
freestanding = true
filename = "kernel"
extension = "bin"
ldscript = "linker.ld"
ldflags = ["-T", "linker.ld"]
```
Notes:
* Multi-file **ASM** packages emit one `\<stem>.bin` per source; **C/C++** emit a single project binary.
* `objcopy` tools tried in order: `llvm-objcopy`, `objcopy`, `gobjcopy`.
* Incompatible with `build.qt = true`.
* `dcr run` rejects `flat-bin` (not a host executable).

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sidebar_label: Dependencies
---
# Dependencies
## Formats
The `[dependencies]` section supports three formats:
### String (registry)
```toml
[dependencies]
fmt = "10.1.1"
spdlog = "1.12"
catch2 = "3.4.0"
```
The version string is used as-is for registry lookup.
### Table (git)
```toml
[dependencies]
dcr-math = { git = "https://github.com/dexoron/dcr-math-lib.git", tag = "v0.1.0" }
```
Fields: `git`, `branch`, `tag`, `rev`, `mode`, `include`, `lib`, `libs`.
### Table (path)
```toml
[dependencies]
mylib = { path = "../mylib" }
```
For a prebuilt external library, specify its layout explicitly. The three
arrays are paths relative to the dependency root (`include`, `lib`) and linker
names (`libs`):
```toml
[dependencies]
dcr-math = { path = "../deps/dcr-math", include = ["include"], lib = ["lib"], libs = ["dcr-math"] }
```
## Registry
DCR uses a package registry for dependency lookup by name.
```toml
# ~/.dcr/config.toml
[registry.default]
url = "https://index.dcr.dexoron.tech"
priority = 1
```
Registry priority: order in `config.toml`. The `DCR_INDEX_PATH` variable overrides the path to `index.json`.
## Git dependencies
Git dependencies are cloned into `~/.dcr/git/`; their exact checked-out commit is written to `dcr.lock`.
Both Git and path dependencies have two modes:
* **DCR package:** the source has `dcr.toml`. DCR builds it before the consumer and uses the package name from its manifest for linking.
* **Prebuilt library:** it provides existing headers and binaries through `include`, `lib`, and `libs`. DCR passes them to the compiler/linker without building the dependency.
The mode is normally detected automatically. Use `mode = "build"` or `mode = "prebuild"` when a source contains both a manifest and prebuilt artifacts and you need to choose explicitly.
`dcr-math-lib` publishes both forms. Select its prebuilt library explicitly:
```toml
[dependencies]
dcr-math = { git = "https://github.com/dexoron/dcr-math-lib.git", tag = "v0.1.0", mode = "prebuild", include = ["include"], lib = ["lib"], libs = ["dcr-math"] }
```
DCR supports specifying branch/tag/rev for git sources:
* `branch` — switch to a branch
* `tag` — switch to a tag
* `rev` — switch to a specific commit
* `features` — feature flags (parsed, but does not affect build)
## Path dependencies
Local paths may point at a DCR package or a prebuilt external library. A path DCR package is built before its consumer, including its own path/git dependencies. DCR detects dependency cycles. A prebuilt library is never built by DCR; it is linked from the directories declared in its dependency entry.
```toml
[dependencies]
mylib = { path = "/abs/path/to/lib" }
mylib = { path = "../relative/path" }
```
For DCR packages, the package name from `dcr.toml` is used for linking (so the dependency key may differ from the library name). Header resolution includes the packaged `target/include` directory and link search includes `target/lib`.
### Recommended library layouts
Buildable DCR library:
```text
dcr-math-lib/
├── dcr.toml
└── src/
├── dcr_math.c
└── dcr_math.h
```
Prebuilt library:
```text
dcr-math-lib/
├── include/
│ └── dcr_math.h
└── lib/
└── libdcr-math.a # or .so / .lib
```
`libs` contains linker names without the `lib` prefix and file extension: use
`["dcr-math"]` for `libdcr-math.a`.
If one repository contains both forms, keep the prebuilt files in `include/` and `lib/` and select the mode explicitly:
```toml
[dependencies]
dcr-math = { git = "https://github.com/dexoron/dcr-math-lib.git", tag = "v0.1.0", mode = "prebuild", include = ["include"], lib = ["lib"], libs = ["dcr-math"] }
```
For a local copy, replace `git` with `path = "../dcr-math-lib"`. In `prebuild` mode DCR does not run the dependency build, even when `dcr.toml` is present.
## dcr.lock
Dependency lock file. Contains package names and sources.
Created during `dcr build` for resolved registry, path, and Git dependencies. Not updated during `dcr add` — only on the next `dcr build`.
## Resolution process
1. Resolve dependency sources (registry → git → path)
2. Fetch git dependencies into `~/.dcr/git/` and check out the requested ref
3. Build DCR package dependencies recursively
4. Collect `include_dirs`, `lib_dirs`, `libs` for the compiler

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sidebar_label: Environment variables
---
# Environment Variables
## DCR_COMPILER
Overrides the compiler for all languages. **Highest priority.**
```bash
export DCR_COMPILER=clang
dcr build
```
Compiler resolution priority:
1. `DCR_COMPILER` (env)
2. `DCR_CC` / `DCR_CXX` / `DCR_AS` (env)
3. `[toolchain]` (dcr.toml)
4. `build.compiler` (dcr.toml)
5. `PATH`
## DCR_CC / DCR_CXX / DCR_AS
Per-language override (lower priority than `DCR_COMPILER`, higher than `[toolchain]`).
```bash
export DCR_CC=gcc-14
export DCR_CXX=g++-14
export DCR_AS=arm-linux-gnueabihf-as
```
## DCR_LD / DCR_AR
Override linker and archiver.
```bash
export DCR_LD=ld.lld
export DCR_AR=llvm-ar
```
## DCR_DEBUG
Enables debug mode — prints all compilation commands to stderr before execution.
```bash
export DCR_DEBUG=1
dcr build
```
## DCR_INDEX_PATH
Overrides the path to the registry `index.json`.
```bash
export DCR_INDEX_PATH=/custom/path/index.json
```
Default: `~/.dcr/index.json`.
## DCRUP_MIRROR
Download mirror for `dcrup` (prebuilt binaries only).
```bash
export DCRUP_MIRROR=auto # cf → gh → sf → ya (default)
export DCRUP_MIRROR=cf # CloudFlare CDN
export DCRUP_MIRROR=gh # GitHub Releases
export DCRUP_MIRROR=sf # SourceForge
export DCRUP_MIRROR=ya # Yandex CDN (RU fallback)
```
CLI override: `dcrup install stable --mirror cf`.
## DCRUP_HOME / DCRUP_BIN / DCRUP_REPO
Installer layout and source clone URL:
```bash
export DCRUP_HOME=~/.dcr
export DCRUP_BIN=~/.dcr/bin
export DCRUP_REPO=https://github.com/dexoron/dcr
```

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sidebar_label: Platform support
---
# Platform Support
## Target Triples
DCR normalizes target triples. Short platform names are expanded to full triples.
### Linux
```
target/<arch>-unknown-linux-<env>/<profile>/
```
Architectures: `x86_64`, `aarch64`, `i686`, `armv7`, `riscv64` (host-detected).
Environments: `gnu` (default), `musl`.
Artifact type: ELF. Extensions: `.so` (sharedlib), `.a` (staticlib).
### macOS
```
target/<profile>/ (default) or target/<triple>/<profile>/ (with target)
```
Architectures: `x86_64`, `aarch64` (host-detected).
Extensions: `.dylib` (sharedlib), `.a` (staticlib).
### Windows
```
target/<profile>/ (default) or target/<triple>/<profile>/ (with target)
```
Architectures: `x86_64`, `aarch64`.
Environments: `msvc` (default), `gnu` (MinGW).
Extensions: `.exe` (bin), `.lib` (staticlib), `.dll` (sharedlib), `.efi` (UEFI).
### BSD
```
target/<arch>-unknown-<os>/<profile>/
```
Supported systems: `freebsd`, `openbsd`, `netbsd`, `dragonfly`.
## Host Detection
DCR uses `std::env::consts::ARCH` and `std::env::consts::OS` for host platform detection. Used as fallback when `target` is not specified.

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sidebar_label: Workspaces
---
# Workspaces
Workspaces allow managing multiple packages in a single repository.
## Configuration
```toml
[workspace.lib-core]
path = "lib-core"
[workspace.lib-utils]
path = "lib-utils"
deps = ["lib-core"]
[workspace.app]
path = "app"
deps = ["lib-core", "lib-utils"]
main = true
```
### Member fields
| Field | Description |
| ------ | ------------------------------------------------ |
| `path` | Path to the package (relative to workspace root) |
| `deps` | Dependencies on other members |
| `main` | Mark as the main package |
## Topological sort
DCR automatically sorts packages by dependencies: package A is built before B if B depends on A.
Cyclic dependencies are detected and cause an error.
## Build
```bash
dcr build # build all packages in dependency order
dcr build --workspace app # build only app (dependencies built automatically)
```
When building a workspace, DCR automatically injects include and library paths of dependent workspace members:
* **Include Paths**: Automatically resolves and injects header directories of dependencies, including the member's `src/` directory, local `include/` directory, and the packaged `target/include` directory.
* **Library Paths**: Injects compiled library search paths (`target/lib` as well as target-specific build folders) to allow automatic linking with member libraries.
## Clean
```bash
dcr clean # clean only root target/
dcr clean --all # clean target/ of all packages
```
## Inheritance
If a member has `inherit = true` in its `[build]` section, fields from the root `[build]` are merged into the member:
```toml
# root dcr.toml
[build]
inherit = true
language = "c"
standard = "c17"
# member inherits language and standard
```
## Workspace-only root (no build of its own)
A workspace root can set `workspace_only = true` — it won't be built itself, and doesn't need `language` or `compiler`:
```toml
[package]
name = "my-workspace"
version = "0.1.0"
[build]
workspace_only = true
kind = "bin"
[workspace]
lib-core = { path = "lib-core" }
app = { path = "app", deps = ["lib-core"] }
```

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---
sidebar_label: Self Update
---
# Self Update
## dcr --update
Automatic update to the latest version. Downloads a binary (not an archive) from GitHub Releases and replaces the current executable.
```bash
dcr --update
```
## How it works
1. DCR detects the current platform and architecture
2. Fetches the latest release from `api.github.com/repos/dexoron/dcr/releases/latest`
3. Compares versions
4. Downloads the matching asset (direct binary URL, not archive)
5. Replaces the current executable via `self_replace`
## Asset naming
Pattern: `dcr-\<triple>` or `dcr-\<triple>.exe`
| Platform | Asset name |
| -------------- | -------------------------------- |
| Linux x86_64 | `dcr-x86_64-unknown-linux-gnu` |
| macOS x86_64 | `dcr-x86_64-apple-darwin` |
| macOS ARM64 | `dcr-aarch64-apple-darwin` |
| Windows x86_64 | `dcr-x86_64-pc-windows-msvc.exe` |
## AUR
If DCR was installed via AUR, `--update` shows a warning:
```
Update via package manager: yay/paru -Syu {package_name} or sudo pacman -Syu {package_name}
```
## Errors
* Cannot detect platform — error
* Cannot fetch release — error with URL
* No write permission — error (use `sudo` or manual install)

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sidebar_label: Running tests
---
# Running Tests
## Execution
```bash
dcr test
```
Builds the project, then compiles and runs test files from `tests/`.
## Profiles
```bash
dcr test # debug (default)
dcr test --release # release
dcr test --debug # explicit debug
```
## Output
```
=====================
Testsuite summary
=====================
TOTAL: 5
PASS: 3
SKIP: 1
FAIL: 1
=====================
```
## Exit code
* 0 — all tests passed (FAIL = 0)
* 1 — test failures or build error
## What gets built
* All `.c` files from `tests/` (`.cpp` not supported)
* Include path: `tests/` (for `dcr_test.h`)
* Linked with project if `package.type = "lib"` or `kind = "staticlib"`/`"sharedlib"`

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sidebar_label: Test framework (EXPECT, TEST, ...)
---
# Test Framework
DCR has a built-in minimal test framework for C.
## Macros
### `EXPECT(expr)`
Asserts that an expression is true.
```c
EXPECT(1 + 1 == 2);
EXPECT(ptr != NULL);
```
### `SKIP(reason)`
Skips a test with a message.
```c
SKIP("not implemented on Windows");
```
### `TEST(name)`
Defines a test.
```c
TEST(addition) {
EXPECT(1 + 1 == 2);
EXPECT(2 + 2 == 4);
}
```
### `TEST_CASE(name)`
Registers a test case.
```c
TEST_CASE(math) {
EXPECT(1 + 1 == 2);
}
```
## Initialization
```bash
dcr test --init
```
Creates:
* `tests/dcr_test.h` — framework header (do not edit)
* `tests/test.c` — template with example test
## Structure
```
tests/
├── dcr_test.h # framework (do not edit)
├── test.c # main tests
└── ... # additional .c test files
```
Only `.c` files are compiled (`.cpp` is not supported).

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sidebar_label: Introduction
---
# DCR — C/C++ Build Tool & Package Manager
<details>
<summary>Quick reference</summary>
```bash
# Installation (dcrup)
curl -fsSL https://sh.dcr-tool.ru | sh -s -- self-install
export PATH="$HOME/.dcr/bin:$PATH"
dcrup install stable # auto: cf → gh → sf → ya
# dcrup install stable --mirror cf # CloudFlare / GitHub / SourceForge / Yandex
# Create a project
dcr new my-app
cd my-app
# Build and run
dcr build
dcr run
# Run tests
dcr test
# Add a dependency
dcr add fmt
# Generate IDE files
dcr gen vscode
```
</details>
## Contents
| Section | Description |
| ----------------------------------------------------- | --------------------------------------------- |
| [Getting Started](/docs/getting-started/installation) | Installation and first steps |
| [Commands](/docs/commands/project-commands) | All CLI commands |
| [Reference](/docs/reference/dcr-toml) | Configuration, build, dependencies, platforms |
| [Testing](/docs/testing/test-framework) | Built-in test framework |
| [Recipes](/docs/recipes/cross-to-windows) | Common scenarios |
| [IDE Integration](/docs/ide-integration) | VS Code, CLion, compile_commands.json |
| [Self Update](/docs/self-update) | Auto-update |
| [FAQ](/docs/faq) | Frequently asked questions |
| [Changelog](/docs/changelog) | Version history |
| [License](/docs/license) | DCR and vendored library licenses |
| [Contributing](/docs/contributing) | DCR development |
## Features
* **Incremental builds** — mtime + `.d` headers + SHA256 fingerprint
* **Parallel compilation** — thread::scope, atomic task queue
* **7 backends** — gcc/clang (unix_cc), MSVC/clang-cl (msvc), GAS, NASM, MASM, FASM, LLVM IR
* **8 project kinds** — bin, staticlib, sharedlib, efi, elf, none, custom, flat-bin
* **Disk images** — optional `[archive]` packs FAT12/16/32 images after build
* **Cross-compilation** — short names and full triples
* **Profiles** — debug / release with field overrides
* **Workspaces** — multi-package projects with topological sort
* **Registry + Git + Path** — three dependency mechanisms
* **IDE generation** — VS Code, CLion, compile_commands.json, JSON metadata
* **pkg-config** — automatic system library discovery
* **Per-command `--help`** — `dcr build --help`, `dcr new --help`, etc.
* **Man pages** — `man dcr`, `man dcr-build`, `man dcr-new`

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sidebar_label: Changelog
---
# Changelog
## 0.9.0 (2026-08-31)
* **Download mirrors in `dcrup`** — `--mirror auto|cf|gh|sf|ya` and `DCRUP_MIRROR`.
Default `auto` tries **cf → gh → sf → ya** (CloudFlare CDN, GitHub, SourceForge, Yandex CDN).
* **Complete Path/Git dependencies** — DCR packages from `path` and `git` are built before their consumer. Git sources are cached in `~/.dcr/git`, support `branch`/`tag`/`rev`, and record the exact commit in `dcr.lock`.
* **Build and prebuild modes** — `path` and `git` dependencies can build a DCR package from `dcr.toml` or link existing `include`/`lib`/`libs` artifacts; `mode = "build"` / `"prebuild"` selects explicitly when both forms are present.
* **Prebuilt dependency examples** — documentation now shows the `dcr-math-lib` Git repository and recommended build/prebuilt layouts for both `git` and `path`.
* **Transitive dependency builds and cycle reporting** — DCR recursively builds DCR packages and reports a clear dependency chain for cycles.
* **Bare path arguments for `dcr add`** — `dcr add mylib ../mylib` now works in addition to the explicit `path:` form.
* **Removed `install.sh` / `install.ps1` / `install_bsd.sh`** — superseded by `dcrup`.
## 0.8.5 (2026-08-08)
* **`package.dcr-version`** — optional CLI version pin in `dcr.toml`.
`dcr new` / `dcr init` write the current version. On config load:
* missing / empty pin → warn "add dcr-version";
* dcr older than pin → warn "update dcr";
* dcr newer than pin → warn "check changelog, update pin";
* equal → silent.
Commands do not fail, warning only (once per path per process).
## 0.8.4 (2026-08-04)
**Added:**
* **`.dcr/` directory** — shared machine-readable build facts for IDE integrations:
* `.dcr/compile_commands.json`
* `.dcr/build-info.json` (`schemaVersion`, `artifact_path`, `profile`, …)
* `.dcr/toolchain.json` (compiler/debugger paths, moc/uic/rcc)
* `.dcr/ide/` (placeholder for IDE lock files)
* **`dcr gen project-info`** — `target`, `target_dir`, `artifact_path`, `artifact_kind`, `source_roots`, `include_globs`, `exclude_globs`; absolute/canonical paths.
* **`dcr build --print-artifact-path`** — one absolute artifact path line on stdout after a successful build.
* **`dcr gen … --quiet` / `-q`** — suppress human success logs for gen subcommands.
* **`.clangd`** — created on first gen with `CompilationDatabase: .dcr` (`# managed by dcr gen`); custom `.clangd` is not overwritten.
* **Helpers** `canonicalize_path`, `atomic_write`, `ensure_dcr_dir`; pure `resolve_artifact_path` via `platform::*`.
* **`dcr new` / `dcr init`** — add `.dcr/` to `.gitignore`.
**Changed (breaking):**
* **`compile_commands.json` moved** from project root to **`.dcr/compile_commands.json`**.\
clangd discovers it via `.clangd` / `--compile-commands-dir=.dcr`.\
CLion and VSCode generators updated accordingly.
* **Atomic write** for compile_commands (tmp + rename).
* **`gen vscode` / `gen clion` launch/run** — use the same artifact path resolver as `project-info` / `build-info.json`.
**Fixed:**
* Launch configs no longer hardcode `target/\<profile>/\<name>` without the Linux triple segment.
* Symlink/mount roots: best-effort canonicalize for root and compile database paths.
## 0.8.3 (2026-08-03)
### Added
* **`dcr run -- \<args>...`** — cargo-style argument forwarding after a bare `--`\
(`dcr run --release -- --test_help`). Applies to direct binary runs and `[run].cmd`.
* **Tests** — host target section `ldflags` without CLI `--target`; run-arg forwarding; `split_double_dash` unit tests.
### Changed
* **Native builds resolve the host triple** — without `--target` / package `build.target`, host sections such as\
`[build.x86_64-unknown-linux-gnu]` apply again (`cflags` / `ldflags` / toolchain).\
Previously the target was empty and those sections were ignored while artifacts already used the host triple path.
* **Empty target** — no more `Unknown target ''` warning.
* **`dcr run --help` / man `dcr-run`** — document `--` forwarding.
### Fixed
* **Native artifact paths on Windows and macOS** — without an explicit `--target` / `build.target`, artifacts use `target/\<profile>`, so `dcr run` and flat-bin find the build output.
* Target-specific `ldflags` missing on native host builds (e.g. micro-lang + `libsct-elf`).
* Spurious empty-target warning.
## 0.8.2 (2026-07-22)
### Added
* **Compile progress `[N/M]`** — live TTY status line (`compile pkg v0.1.0 [12/41]`) so long mono-package builds do not look hung.
* **DCR status style** — fixed-width verbs: `project`, `compile`, `dep`, `ready`, `pack`, `done`, `run`.
* **Cargo feature `archive`** — optional FAT packing via `fatfs` (`cargo build --features archive`). Release CI builds with the feature; without it `[archive]` fails with a clear message.
* **Tests** — `flat_bin_nasm_build`, package `build.target` without CLI `--target`, stricter workspace `clean --all`.
* **CI expansion** — unit + integration on Linux/macOS/Windows, archive feature job, rust-cache, clippy default + all-features (see `.github/workflows/ci.yml`).
### Changed
* **No forced host triple from CLI** — without `--target`, package/member `build.target` is honored (bare-metal / ISO `post_steps` paths).
* **Relative include/lib flags** (`-I`, `-i`, `-isystem`, `-idirafter`, `-L`, `-T`) absolutized against the package root under workspace builds.
* **`dcr clean --all`** — no spam for members without a local `target/` (shared root `target/`).
* **`error` / `warn`** — red / yellow on stderr; CLI fully English (`Hint:`).
* **Help / man** — list `add`, `lint`, `setup`; unknown command exits with code 1.
* **Tool NotFound** — `linker not found: ld.lld …` / `{tool} not found …` instead of raw `os error 2`.
## 0.8.1 (2026-07-20)
### Added
* **`build.kind = "flat-bin"`** — raw binary (default `.bin`) for OS-dev payloads:
* **NASM** — `-f bin` → `\<stem>.bin`
* **FASM** — direct output (`format binary` in source)
* **GAS / MASM / LLC** — object → `objcopy -O binary` → `\<stem>.bin`
* **C/C++** — objects → freestanding link → `objcopy -O binary` → `\<name>.bin`
* Requires `llvm-objcopy` / `objcopy` / `gobjcopy` except for NASM/FASM direct emit
* **`[archive]` section** — FAT12/16/32 disk images after build (`output`, `format`, `size`, `offset`, `label`, `bootsector`, `layout`). From 0.8.2 requires feature `archive`.
* **Single-file `build.roots`** — a root may be a single source or header file, not only a directory.
### Changed
* **`--force`** also re-runs `build.steps` and `build.post_steps`.
* **`dcr run` on workspace-only root** — if `[run].cmd` is set, run that after build; otherwise delegate to a workspace member.
## 0.8.0 (2026-07-18)
### Added
* **Dedicated Build Engine (`src/core/build/engine.rs`)** — decoupled the build orchestration logic completely from the CLI front-end wrapper in `src/cli/build.rs` to a reusable, decoupled core build engine.
* **Polymorphic Language Model (`Language` trait)** — introduced the abstract `Language` trait (`src/core/build/language/mod.rs`). File scanning, compiler resolution, and flags handling are now encapsulated in dedicated language modules for C, C++ (including Qt code generation), LLVM IR, and ASM (GAS, NASM, FASM, MASM).
* **Polymorphic Compilation Dispatch (`Builder` trait)** — introduced the `Builder` trait to generalize builder invocations (`src/core/build/builder/mod.rs`). Consolidated GCC/Clang logic into `builder/cc_common.rs` and Microsoft Visual C++ logic into `builder/msvc/`.
* **Per-Language Configuration overrides (`[build.\<lang>]`)** — introduced support for configuring language-specific compiler, standard, and flags (e.g. `[build.c]`, `[build.cxx]`, `[build.asm]`) independently in `dcr.toml`.
* **Automatic Workspace Dependency Injection** — during workspace builds, include/lib paths of dependent workspace members (including their source headers, local `include/` folders, and build target `target/include` / `target/lib` folders) are automatically resolved and injected.
* **`BuildReporter` Event System** — decoupled build orchestration output into a structured event-driven reporter model (`src/core/build/report.rs`), making DCR suitable for library embedding and IDE integrations without stderr capturing.
* **Build Cancellation Support** — introduced thread-safe cancellation tokens (`Arc\<AtomicBool>`) allowing clients to safely abort compile runs mid-execution.
* **TOML Formatting & Custom Keys Preservation** — migrated the config editor to `toml_edit`, preserving all unknown/user-defined TOML keys, structures, and comments during file write operations (e.g., in `dcr add`).
* **Path Dependencies Target Include Resolution** — local path dependencies configured via tables now correctly expose headers built and packaged into their `target/include` folder to consumer packages.
* **Modular Integration Test Suite** — refactored the monolith `tests/cli_basic.rs` file into clean, specialized integration tests: `cli_build.rs`, `cli_deps.rs`, `cli_lint.rs`, `cli_new.rs`, `cli_qt.rs`, `cli_test.rs`, `cli_workspace.rs`.
### Changed
* **Consolidated Linking and Archiving** — artifact generation (linking executables/shared libraries and archiving static libraries) consolidated into a single `src/core/build/builder/artifact.rs` module.
* **Workspace-Aware member execution** — `dcr run` executed at the workspace root of a `workspace_only` project now triggers the member build inside the workspace context using the `--workspace` parameter, preventing standalone build issues.
* **Elimination of Global State** — removed global variables and states from the build core, encapsulating build logic inside isolated `BuildContext` structs for thread safety.
* **Build Cache Separation** — relocated mtime tracking, incremental caching, and header-dependency checking logic to `src/core/build/cache.rs`.
* **Modularized Pre-build Steps** — decoupled generator scripts and pre-build commands parsing into `src/core/build/steps.rs`.
## 0.7.4 (2026-06-17)
### Added
* **Native Qt support** — automatic meta-object handling (MOC, UIC, RCC) added when `build.qt = true` is set in `dcr.toml`.
* **`dcr lint` command** — C/C++ static analysis via `clang-tidy`. Supports `--fix` for automatic fixes. Respects `build.roots` and `build.src_disable` from config.
* **Three new assembler backends**:
* **MASM** (`compiler = "ml"` / `"ml64"`) — Microsoft Macro Assembler.
* **FASM** (`compiler = "fasm"`) — Flat Assembler.
* **LLVM IR** (`compiler = "llc"`) — compiles `.ll` files via `llc -filetype=obj`.
* **Shared ASM pipeline** — linking and archiving logic consolidated into `core/builder/asm.rs`. Adding a new assembler backend now takes ~30 lines.
* **Filesystem utilities** — `to_hex()` and `home_dir()` extracted to `utils/fs.rs`.
* **Build utilities** — `normalize_target()`, `normalize_kind()`, `normalize_platform()`, `default_profile_flags()` extracted to `utils/build.rs`.
* **Backend helpers** — `asm_lang_flag()`, `source_extensions()`, `elapsed_secs()` added to `core/builder/common.rs`.
* **Full Bare-Metal / Freestanding Automation** — introduced the `build.freestanding = true` configuration option. When enabled (or when a bare-metal target is detected), DCR automatically injects `-ffreestanding` during compilation and both `-nostdlib` and `-static` during linking.
* **Artifact Optimization (LTO & Strip)** — added `build.lto` (auto-injects `-flto` for compiler and linker) and `build.strip` (automatically strips debug symbols via linker `-s` flag) options to `dcr.toml`.
* **Compilation Thread Control** — added the `build.codegen-units` option to strictly limit the maximum number of parallel jobs utilized by the custom `parallel_build` worker pool.
* **Panic Behavior Management** — added `build.panic = "abort"` support. For C++ targets, it automatically strips exception handling and unwind tables via `-fno-exceptions`, `-fno-unwind-tables`, and `-fno-asynchronous-unwind-tables`.
### Changed
* **Intelligent Default Flags Generation** — automated injection of fallback optimization (`-O3`/`-O0`), debug (`-g`), and warning (`-Wall -Wextra`) flags is now suppressed for bare-metal and freestanding builds if `build.cflags` are overridden.
* **Centralized Bare-Metal Detection** — relocated the `is_bare_metal_target` helper to common build utilities (`src/utils/build.rs`) for unified access across the building core.
* **Architectural Refactoring**:
* Renamed `src/config.rs` to `src/templates.rs`.
* Started consolidation of configuration and build orchestration logic.
## 0.7.3 (2026-06-13)
### Added
* **`--vcs` option for `new` and `init` commands** — introduced explicit version control system selection via `--vcs \<git|none>`.
* **Git metadata integration in `--version`** — the CLI now appends the current short commit hash and a `-dirty` suffix if there are uncommitted changes in the DCR repository.
* **Automatic `.gitignore` generation** — Git repository initialization now automatically writes a `.gitignore` file excluding the `/target` directory.
* **Nested repository prevention** — automatic Git initialization is now skipped if `dcr new` or `dcr init` is executed inside an already existing Git repository.
* **VCS verification tests** — added `new_vcs_options_work` and `init_vcs_options_work` integration tests to ensure reliable repository behavior.
### Changed
* **Complete removal of `git2` dependency** — all Git actions (dependency fetching, VCS setup, status checks) are now delegated to the system `git` executable via `Command`. This simplifies compilation and drops the need for `vendored` and `openssl` features.
* **Migrated from `reqwest` to `ureq`** — replaced the heavy `reqwest` crate in `flag_update.rs` with the lightweight synchronous `ureq 2.10` client, reducing overhead and the final binary size.
## 0.7.2 (2026-06-07)
### Added
* `default_target_triple()` now respects `target_env` — Linux (gnu/musl) and Windows (msvc/gnu) use the correct environment instead of hardcoded values.
### Fixed
* **macOS Apple Silicon builds failed with `_main` undefined** — `--target=` is now passed to ldflags, not just cflags. `default_target_triple()` uses `std::env::consts::ARCH` on macOS instead of hardcoded `x86_64`.
* **GitHub Stars and GPL-3.0 badges not rendering in README** — badge block converted to pure HTML.
### Changed
* Default target resolution extracted into shared `default_target_triple()` — removed duplication across build, run, clean.
## 0.7.1 (2026-06-02)
### Added
* **`--help` for all commands** — `dcr build --help`, `dcr run --help`, `dcr new --help`,
`dcr init --help`, `dcr clean --help`, `dcr add --help`, `dcr fmt --help`,
`dcr setup --help`, `dcr tree --help`, `dcr gen --help`, `dcr --update --help`,
`dcr test --help`. All output uses styled headers (green) and usage lines (cyan).
* **Man pages** — 12 troff pages in `man/man1/`: `dcr.1`, `dcr-build.1`,
`dcr-run.1`, `dcr-new.1`, `dcr-init.1`, `dcr-clean.1`, `dcr-add.1`, `dcr-test.1`,
`dcr-gen.1`, `dcr-fmt.1`, `dcr-tree.1`, `dcr-setup.1`.
* **Man pages in all packaging** — install.sh, install_bsd.sh, AUR PKGBUILD,
Debian (cargo-deb), RPM (cargo-generate-rpm), Nix (postInstall), Homebrew
(resource), Snap, GitHub Release assets.
* **Project name validation** — `dcr init` and `dcr new` now validate names before
creating files. Only ASCII letters, digits, `_` and `-` are allowed.
* **`documentation` and `homepage` fields** — added to `Cargo.toml`.
* **Release profile optimizations** — `opt-level = "z"`, LTO, `codegen-units = 1`,
`panic = "abort"`, `strip = true` for smaller binaries.
* **Linux i686, armv7, riscv64 targets** — added to release workflow and install scripts.
* **Linux musl i686, armv7 targets** — cross-compiled via zigbuild in CI.
* **AUR packages** — `dcr-dev`, `dcr-dev-bin` publishing workflow.
* **Snap publishing** — automated Snapcraft publishing in CI.
* **Snap badge** — in README.
### Changed
* **`validate_package_name` made public** — callable from CLI commands.
* **README platform table** — reorganized: libc variants as separate OS rows,
removed extra columns. Linux architecture list updated.
* **`gen.rs` no-args output** — now uses styled output instead of raw `eprintln!`.
* **`tree.rs`, `fmt.rs`, and `setup.rs`** — now accept arguments for `--help`.
* **README install commands** — `| bash` → `| sh` for POSIX compatibility.
### Fixed
* **`dcr new \<invalid-name>` creates directory then fails** — validation now
happens before any file operations.
* **`dcr init` on invalid directory name** — same fix.
* **Man pages missing in installed packages** — now shipped in all formats.
* **Windows drive letter false positive** — in dependency file parser.
* **CRLF (`\r\n`) breaks dependency parser** — now handles mixed line endings.
* **Newline after backslash not consumed** — in `parse_d_file` escape handling.
## 0.7.0 (2026-06-01)
### Added
* **OpenBSD and NetBSD target support** — full platform routing with dynamic target triples using `std::env::consts::ARCH` and `std::env::consts::OS`. Affects `build`, `run`, `clean` commands and the platform module.
* **`src/platform/bsd.rs`** — new BSD platform module (shared by FreeBSD, OpenBSD, NetBSD) providing `bin_path`, `lib_path`, `elf_path`, `efi_path`, `shared_lib_path`.
* **`build.out_dir` config option** — custom output directory that overrides the default `target/\<triple>/\<profile>` path for final artifacts. Supported in `build`, `run`, and config validation.
* **`dcr fmt` command** — new CLI command that formats all C/C++ source files (`*.c`, `*.cpp`, `*.h`, `*.hpp`) in `src/` and `tests/` using `clang-format`.
* **Incremental linking** — `needs_link()` in `common.rs` checks if any object file is newer than the linked output, skipping unnecessary relinking. Implemented for all backends (`unix_cc`, `msvc`, `gas`, `nasm`).
* **`build.kind = "none"` and `"custom"`** — two new project kinds for special build scenarios that don't produce standard artifacts.
* **`install_bsd.sh`** — POSIX-compliant installation script for BSD systems (FreeBSD, OpenBSD, NetBSD) with binary download and source build modes.
* **Linux ARM64 support in `install.sh`** — added `Linux:aarch64|Linux:arm64` target detection for pre-built binary downloads.
* **BSD OS detection in `install.sh`** — detects FreeBSD, OpenBSD, NetBSD and determines target triple.
* **`rust-toolchain.toml`** — explicit toolchain pinning to `stable` channel.
* **Integration tests** — `build_with_target_config` (verifies `build.target = "linux"`) and `build_with_out_dir` (validates custom output directory).
* **`get_build_string_with_profile` made `pub`** — so `run.rs` can determine custom output directory configuration.
### Changed
* **`build.target` semantics changed** — now strictly contains a target triple (e.g., `x86_64-unknown-linux-gnu`) or short name (`linux`, `macos`, `windows`). No longer used as custom output directory — this functionality moved to `build.out_dir`.
* **`build.standard` made optional** — changed from `String` to `Option\<String>`. Validation only enforces non-empty for non-ASM languages. Skipped in `dcr.toml` output if empty.
* **`dcr run` with `out_dir`** — now determines target directory respecting `build.out_dir` via `get_build_string_with_profile()` from `build.rs`.
* **`collect_sources()` returns empty vector** instead of error when no sources are found, allowing `kind = "none"` or `kind = "custom"` projects with no source files.
* **CI/CD release workflow refactored** — `git2` made target-specific (no vendored-openssl on Windows), Zig-based cross-compilation for non-x86_64 Linux targets, Arch Linux package version cleanup (dashes → dots), `gmake` symlink for NetBSD.
* **README compatibility table** — FreeBSD, OpenBSD, NetBSD build/run status upgraded from "community/best-effort" to "officially supported".
* **Documentation updated** — `build-section.md` describes new `build.target` and `build.out_dir` fields. `target-directory.md` rewritten to clarify the distinction.
### Fixed
* **stdout/stderr not inherited in `dcr run`** — child process output was captured and manually printed, breaking interactive programs. Fixed by switching to `Command::status()`.
* **Race condition in release CI** — matrix build jobs could upload assets to a release that didn't exist yet. Fixed by adding a dedicated `create-release` job.
* **Release GHA — stable toolchain override** — fixed Rust toolchain override issues in CI.
* **Arch Linux package version sanitization** — version strings with dashes (e.g., `0.7.0-dev`) are invalid for `pkgver`. Fixed by replacing dashes with dots.
* **GPG permissions after Docker** — Docker operations changed GPG directory ownership. Fixed by running `chown` after Docker commands.
* **RPM artifact paths** — RPM artifacts were placed in `rpm/x86_64/` instead of `fedora/x86_64/`. Fixed in Dexoron Packages Index workflow.
* **JSON parsing reliability in `install.sh`** — added `jq` as primary parser with `python3` fallback for dev channel release lookup.
### Removed
* **`format_roots()` helper function** — removed from `common.rs`. Was only used by the old error handling path in `collect_sources()`.
* **Per-distribution artifact download steps** — three separate `actions/download-artifact` steps replaced with unified `gh release download --clobber`.

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sidebar_label: Build commands (build, run, clean)
---
# Build Commands
## `dcr build`
Builds the project according to `dcr.toml`.
```bash
dcr build # debug profile
dcr build --release # release build
dcr build --debug # explicit debug
dcr build --target aarch64-unknown-linux-gnu
dcr build --force # full rebuild (also re-runs build.steps / post_steps)
dcr build --clean # clean + build
dcr build --verbose # show compilation commands
dcr build --workspace pkg-a # build specific workspace package
```
Artifacts: `target/\<triple>/\<profile>/\<binary-name>` (Linux with explicit target).
With `[archive]` in `dcr.toml`, a FAT disk image is packed after a successful build.
## `dcr run`
Builds (if sources are newer than artifacts) and runs the binary.
```bash
dcr run
dcr run --release
dcr run --force # force rebuild then run
```
On a **workspace-only** root: if `[run].cmd` is set, that command is used after build; otherwise DCR delegates to a workspace member.
## `dcr clean`
Removes `target/` directory (or `target/\<target>/\<profile>`).
```bash
dcr clean
dcr clean --release # target/release/ only
dcr clean --target windows # target/x86_64-pc-windows-msvc/
dcr clean --all # clean all workspace packages
```

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sidebar_label: Dependency commands (add, tree)
---
# Dependency Commands
## `dcr add \<name> [source]`
Adds a dependency to `dcr.toml`.
```bash
dcr add fmt # registry lookup
dcr add mylib ../path/to/lib # path as source
dcr add mylib path:./lib # explicit path prefix
dcr add mylib git:https://github.com/user/repo # explicit git prefix
dcr add mylib github:user/repo # GitHub shorthand
dcr add mylib gitlab:user/repo # GitLab shorthand
```
Source prefixes:
* `path:` — local path
* `git:` — generic git URL
* `github:` — expands to `https://github.com/\<user>/\<repo>`
* `gitlab:` — expands to `https://gitlab.com/\<user>/\<repo>`
* `http://` / `https://` / `git@` — full URL
Flags:
* `--branch \<name>` — git branch
* `--tag \<name>` — git tag
* `--rev \<hash>` — git commit
If source is omitted — DCR searches connected registries. A bare relative or absolute path is accepted as a path dependency.
## `dcr tree`
Displays the project dependency tree.
```bash
dcr tree
```
Example output:
```
my-app v0.1.0
├── fmt (registry)
│ └── spdlog (registry)
└── catch2 (registry)
```
For path dependencies, recursively shows their own dependencies (from their `dcr.toml`).

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sidebar_label: Gen commands (vscode, clion, ...)
---
# Gen Commands
## `dcr gen \<target>`
Generates IDE integration files.
### vscode
```bash
dcr gen vscode
```
Creates:
* `.vscode/tasks.json` — `build` task (dcr build)
* `.vscode/launch.json` — debug launch configuration
* `.vscode/settings.json` — C/C++ settings (clangd paths, includes)
* `.vscode/extensions.json` — recommended extensions (vscode-clangd, vscode-lldb)
### clion
```bash
dcr gen clion
```
Creates:
* `.idea/externalTools.xml` — external tools (build, run, clean, test)
* `.idea/customTargets.xml` — custom build targets
* `.idea/misc.xml` — C/C++ project settings
* `.idea/runConfigurations/\<name>.xml` — per-binary run configurations
### compile-commands
```bash
dcr gen compile-commands
```
Generates `compile_commands.json` — standard format for clangd, cpptools, static analyzers.
### project-info
```bash
dcr gen project-info
```
Outputs JSON array with project metadata:
```json
[
{
"name": "my-app",
"version": "0.1.0",
"root": "/path/to/project",
"profile": "debug",
"language": "c",
"standard": "c17",
"cxx_standard": null,
"compiler": "/usr/bin/clang",
"kind": "bin",
"sources": ["src/main.c"],
"include_dirs": ["src"],
"lib_dirs": [],
"libs": [],
"cflags": ["-std=c17", "-O0", "-g"],
"ldflags": []
}
]
```

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sidebar_label: Project commands (new, init)
---
# Project Commands
## `dcr new \<name>`
Creates a new project with a standard structure and `dcr.toml`. The `name` argument is required.
Only ASCII letters, digits, underscores `_` and hyphens `-` are allowed in the project name.
```bash
dcr new my-app
dcr new my-app --vcs none
```
Flags:
* `--vcs \<git|none>` — Initialize version control system (defaults to `git` if available, or `none`).
Generates:
* `dcr.toml` with basic fields
* `src/main.c` with a `main` template
## `dcr init`
Initializes a DCR project in the current (empty) directory.
```bash
dcr init
dcr init --vcs none
```
Flags:
* `--vcs \<git|none>` — Initialize version control system (defaults to `git` if available, or `none`).
The project name is taken from the current directory name. The directory name must follow the same naming rules as `dcr new`.

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---
sidebar_label: Quality commands (test, fmt)
---
# Quality Commands
## `dcr test`
Runs tests.
```bash
dcr test # debug profile
dcr test --release # release profile
dcr test --debug # explicit debug
dcr test --help # detailed help
```
Before first use, initialize tests:
```bash
dcr test --init
```
This creates `tests/dcr_test.h` (framework) and `tests/test.c` (template).
What `dcr test` does:
1. Builds the project
2. Collects `tests/*.c` files (`.c` only, not `.cpp`)
3. Compiles and links each test file
4. Runs each test binary
5. Prints summary: TOTAL, PASS, SKIP, FAIL
6. Returns non-zero exit code on any FAIL
## `dcr fmt`
Formats C/C++ source files using `clang-format`.
```bash
dcr fmt
```
Processes: `src/**/*.{c,cpp,cxx,cc,h,hpp,hxx,hh}` and `tests/**/*.{c,cpp,cxx,cc,h,hpp,hxx,hh}`.
Uses `.clang-format` at the project root (if present), otherwise default clang-format style.
## `dcr lint`
Runs `clang-tidy` on C/C++ source files for static analysis.
```bash
dcr lint # show diagnostics
dcr lint --fix # apply fixes automatically
dcr lint --help # detailed help
```
Processes: `src/**/*.{c,cpp,cxx,cc}` and `tests/**/*.{c,cpp,cxx,cc}`.
Without `--fix`, clang-tidy reports warnings and errors without modifying files.
With `--fix`, clang-tidy applies automatic suggestions in place.

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---
sidebar_label: System commands (setup, --help, ...)
---
# System Commands
## `dcr setup`
Shows configured registries from `~/.dcr/config.toml`.
```bash
dcr setup
```
If `~/.dcr/config.toml` is not found, DCR returns an error. Create it manually:
```toml
[registry.default]
url = "https://index.dcr.pm"
priority = 1
```
## `dcr --help`
Shows help for all commands.
```bash
dcr --help
```
## `dcr --version`
Shows version and target triple.
```bash
dcr --version # dcr 0.7.0 (x86_64-unknown-linux-gnu)
```
## `dcr --update`
Self-update. Downloads the latest release binary from GitHub Releases and replaces the current one.
```bash
dcr --update
```
Features:
* Auto-detects platform and architecture
* Warns if installed via AUR (use package manager instead)
* Works on Linux, macOS, Windows

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---
sidebar_label: Contributing
---
# Contributing
## Setup
```bash
git clone https://github.com/dexoron/dcr
# or a source mirror: GitVerse / SourceCraft / SourceForge / GitLab (see README)
cd dcr
cargo build
```
## Code style
All code must be formatted with `cargo fmt`:
```bash
cargo fmt
```
## Linting
```bash
cargo clippy --all-targets -- -D warnings
```
## Tests
```bash
cargo test --all-targets
```
## PR process
1. Fork the repository
2. Create a branch: `git checkout -b feature/description`
3. Make changes
4. Run `cargo fmt && cargo clippy && cargo test`
5. Open a Pull Request
## CI
CI runs (see `.github/workflows/ci.yml`):
* `cargo fmt --check`
* `cargo clippy` (default + `--all-features`)
* `cargo check --all-targets --all-features`
* Unit + integration tests on Linux, macOS, Windows
* Extra Linux job with `--features archive` (FAT images)
* Tools on runners: clang, nasm, clang-format/tidy (Linux)

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---
sidebar_label: FAQ
---
# FAQ
## Registry not found
```
error: registry not found
```
**Solution:** Make sure `~/.dcr/config.toml` exists:
```toml
[registry.default]
url = "https://index.dcr.pm"
priority = 1
```
And check `DCR_INDEX_PATH`:
```bash
echo $DCR_INDEX_PATH
```
## Compiler not found
```
error: compiler not found
```
**Solution:** Ensure a compiler is installed and available in PATH.
```bash
which gcc
which clang
```
Or specify explicitly via `[toolchain]` in `dcr.toml`.
## Ctrl+C during build
DCR handles SIGINT: interrupts the current compilation and exits with non-zero code.
## How to create a library?
See [Library Recipe](/docs/recipes/library-project).
## How to cross-compile to Windows?
See [Cross-Compile Recipe](/docs/recipes/cross-to-windows).
## How to create a multi-package project?
See [Workspace Recipe](/docs/recipes/multi-package-workspace).
## Bootloader / pure NASM OS image
Use `kind = "flat-bin"` (NASM `-f bin`) and optional `[archive]` for a FAT disk image.
See [OS-dev recipe](/docs/recipes/os-flat-bin-archive).
## How do I choose a download mirror?
`dcrup install` uses `--mirror auto` by default and tries **cf → gh → sf → ya**.
```bash
dcrup install stable --mirror cf
export DCRUP_MIRROR=ya
```
## Lock file
`dcr.lock` is created during builds (`dcr build`) when registry dependencies are present. To force an update — delete `dcr.lock` and run `dcr build`.

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---
sidebar_label: First steps
---
# First Steps
## Create a project
```bash
dcr new my-app
cd my-app
```
Structure:
```
my-app/
├── dcr.toml
└── src/
└── main.c
```
`dcr.toml`:
```toml
[package]
name = "my-app"
version = "0.1.0"
type = "none"
[build]
language = "c"
standard = "c11"
compiler = "clang"
kind = "bin"
```
## Build
```bash
dcr build
```
Output — `target/\<triple>/debug/my-app` (Linux) or `target/debug/my-app.exe` (Windows).
Build profiles:
```bash
dcr build --release # release build
dcr build --debug # debug (default)
```
## Run
```bash
dcr run
```
Builds (if needed) and runs the binary.
## First test
```bash
dcr test --init # create test template
dcr test # run tests
```
## Formatting
```bash
dcr fmt # clang-format with .clang-format
```
## Linting
```bash
dcr lint # clang-tidy checks
dcr lint --fix # apply fixes automatically
```

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---
sidebar_label: Installation
---
# Installation
## dcrup (recommended)
Install and switch DCR versions (stable / dev / night, pin `0.8.2`, optional build from source).
### Linux / macOS / BSD / Windows (bash)
```sh
curl -fsSL https://sh.dcr-tool.ru | sh -s -- self-install
export PATH="$HOME/.dcr/bin:$PATH"
dcrup install stable
```
Non-interactive install of DCR in one shot:
```sh
curl -fsSL https://sh.dcr-tool.ru | sh -s -- install stable
export PATH="$HOME/.dcr/bin:$PATH"
```
### Windows (PowerShell)
```powershell
irm https://ps1.dcr-tool.ru | iex
# or download then run:
# irm https://ps1.dcr-tool.ru -OutFile dcrup.ps1
# powershell -File .\dcrup.ps1 self-install
# $env:Path += ";$env:USERPROFILE\.dcr\bin"
dcrup install stable
```
Optional cmd bootstrap (if you prefer `curl` of the cmd shim):
```bat
curl -fsSL -o dcrup.cmd https://cmd.dcr-tool.ru
```
After `self-install`, the command is **`dcrup`** (no `.sh` / `.ps1`): shims live in `~/.dcr/bin` (Unix) or `%USERPROFILE%\.dcr\bin` (Windows `dcrup.cmd`).
### Common dcrup commands
```sh
dcrup install stable # latest stable prebuilt (auto: cf → gh → sf → ya)
dcrup install 0.8.2 # pin → 0.8.2@stable
dcrup install 0.8.2@dev
dcrup install stable --libc musl # Linux: musl asset (default: gnu)
dcrup install stable --mirror cf # CloudFlare CDN
dcrup install stable --mirror ya # Yandex CDN (RU fallback)
dcrup install stable --build # cargo build --features archive
dcrup install night # always build from branch dev HEAD
dcrup default 0.8.2
dcrup update
dcrup list
dcrup show
dcrup which
```
Layout: `~/.dcr/toolchains/\<id>/dcr` and `~/.dcr/bin/dcr` → active version.
### Download mirrors
Prebuilt installs try **cf → gh → sf → ya** unless you pin a host.
| Code | URL | Notes |
| ---- | ------------------------------------------------------------------------------------------------------------ | -------------------------- |
| `cf` | `https://cdn-global.dcr-tool.ru/\<tag>/\<asset>` | CloudFlare CDN (worldwide) |
| `gh` | `https://github.com/dexoron/dcr/releases/download/\<tag>/\<asset>` | GitHub Releases |
| `sf` | `https://sourceforge.net/projects/dcr-tool/files/\<tag>/\<asset>/download` | SourceForge |
| `ya` | `https://cdn-ru.dcr-tool.ru/\<tag>/\<asset>` | Yandex CDN (RU fallback) |
```sh
dcrup install stable --mirror auto # default
export DCRUP_MIRROR=cf # persist for this shell
```
---
## Arch Linux (AUR)
```sh
yay -S dcr
```
## macOS / Linux (Homebrew)
```sh
brew tap dexoron/dexoron
brew install dcr
```
## Snap (Linux)
```sh
sudo snap install dcrup
```
> If classic Snap Store publishing is unavailable, install the `.snap` from [GitHub Releases](https://github.com/dexoron/dcr/releases/latest) with `--dangerous`.
## Nix (flake)
```sh
nix run github:dexoron/dcr
nix profile install github:dexoron/dcr
```
## Cargo (crates.io)
```sh
cargo install dcr
```
Note: crates.io builds may omit optional features. For FAT disk images (`[archive]`), prefer release binaries or:
```sh
cargo install dcr --features archive
```
## From source
```sh
git clone https://github.com/dexoron/dcr.git
cd dcr
cargo build --release --features archive
ln -sf "$PWD/target/release/dcr" ~/.local/bin/dcr
# or manage versions with dcrup install night / --build
```
## Post-install
```bash
dcr --version
dcrup show # if installed via dcrup
```
Man pages (package installs / release assets):
```bash
man dcr
man dcr-build
```
Registry (optional) — `~/.dcr/config.toml`:
```toml
[registry.default]
url = "https://index.dcr.pm"
priority = 1
```

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---
sidebar_label: IDE Integration
---
# IDE Integration
## VS Code
Install the recommended [DCR extension by Dexoron-Labs](https://marketplace.visualstudio.com/items?itemName=Dexoron-Labs.dcr). Do not install Microsoft C/C++ extensions for DCR projects: DCR uses `clangd`. MS C/C++ is acceptable only when you need its debugger.
Recommended companion extensions:
* [Even Better TOML](https://marketplace.visualstudio.com/items?itemName=tamasfe.even-better-toml)
* [CodeLLDB](https://marketplace.visualstudio.com/items?itemName=vadimcn.vscode-lldb), or MS C/C++ for debugger support only
```bash
dcr gen vscode
```
Generates in `.vscode/`:
| File | Purpose |
| ----------------- | -------------------------------------------- |
| `tasks.json` | `build` task (dcr build) |
| `launch.json` | Debug launch configuration |
| `settings.json` | clangd/IntelliSense: include paths, standard |
| `extensions.json` | Recommends vscode-clangd, vscode-lldb |
## CLion
```bash
dcr gen clion
```
Generates in `.idea/`:
| File | Purpose |
| ------------------------------------------------ | ----------------------------------------- |
| `externalTools.xml` | Build, Run, Clean, Test as external tools |
| `customTargets.xml` | Custom build targets |
| `misc.xml` | C/C++ project settings |
| `runConfigurations/\<name>.xml` | Per-binary run configurations |
## compile_commands.json
```bash
dcr gen compile-commands
```
Generates `compile_commands.json` at project root. Standard format for clangd, C/C++ IntelliSense, static analyzers.
## project-info
```bash
dcr gen project-info
```
Outputs JSON array with project metadata (see [gen-commands](/docs/commands/gen-commands)).

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---
sidebar_label: License
---
# License
## DCR
DCR itself is [GPL-3.0-or-later](https://spdx.org/licenses/GPL-3.0-or-later.html) licensed.
> **Note:** DCR is a build tool, not a library. The GPL applies only to DCR's own source code. Projects built with DCR are not subject to DCR's license — their licensing is determined solely by their own code and dependencies.
## Rust dependencies
DCR is written in Rust. The following notable Rust crates are statically linked:
| Crate | License |
| ------------------------------------------------------- | ----------------- |
| [`ureq`](https://crates.io/crates/ureq) | MIT OR Apache-2.0 |
| [`serde`](https://crates.io/crates/serde) | MIT OR Apache-2.0 |
| [`toml`](https://crates.io/crates/toml) | MIT OR Apache-2.0 |
| [`toml_edit`](https://crates.io/crates/toml_edit) | MIT OR Apache-2.0 |
| [`serde_json`](https://crates.io/crates/serde_json) | MIT OR Apache-2.0 |
| [`sha2`](https://crates.io/crates/sha2) | MIT OR Apache-2.0 |
| [`glob`](https://crates.io/crates/glob) | MIT OR Apache-2.0 |
| [`self-replace`](https://crates.io/crates/self-replace) | MIT OR Apache-2.0 |
| [`ctrlc`](https://crates.io/crates/ctrlc) | MIT OR Apache-2.0 |
Full dependency tree is available in [`Cargo.lock`](https://github.com/dexoron/dcr/blob/main/Cargo.lock). The overwhelming majority are dual-licensed under MIT OR Apache-2.0.
## Additional credits
* DCR's CLI design and project model are inspired by [Cargo](https://doc.rust-lang.org/cargo/).

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---
sidebar_label: Cross-compile to Windows
---
# Cross-Compile to Windows from Linux
Building a Windows binary on Linux using mingw-w64.
## Install toolchain
```bash
# Ubuntu/Debian
sudo apt install mingw-w64
# Fedora
sudo dnf install mingw64-gcc mingw64-binutils
```
## Configuration
```toml
[package]
name = "my-app"
version = "0.1.0"
type = "none"
[build]
language = "c"
standard = "c11"
compiler = "clang"
kind = "bin"
target = "x86_64-pc-windows-gnu" # explicit mingw, not msvc
```
## Build
```bash
dcr build --target x86_64-pc-windows-gnu --release
```
Artifact: `target/x86_64-pc-windows-gnu/release/my-app.exe`.
## Custom toolchain
```toml
[toolchain]
cc = "x86_64-w64-mingw32-gcc"
cxx = "x86_64-w64-mingw32-g++"
```

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---
sidebar_label: Library project
---
# Library Project
Creating a static library and using it in another project.
## Step 1: Create the library
```bash
dcr new my-lib
cd my-lib
```
`dcr.toml`:
```toml
[package]
name = "my-lib"
version = "0.1.0"
type = "none"
[build]
language = "c"
standard = "c11"
kind = "staticlib"
```
`src/my_lib.h`:
```c
#ifndef MY_LIB_H
#define MY_LIB_H
int add(int a, int b);
#endif
```
`src/my_lib.c`:
```c
#include "my_lib.h"
int add(int a, int b) { return a + b; }
```
## Step 2: Build
```bash
dcr build --release
```
Artifacts:
* `target/\<triple>/release/libmy-lib.a` (Linux)
* `target/release/my-lib.lib` (Windows)
* `target/include/` — header files
## Step 3: Use in another project
```bash
dcr new my-app
cd my-app
dcr add my-lib ../my-lib
```
Automatically:
* Adds include path to `target/include/` of the library
* Adds lib path to `target/\<triple>/release/`
* Links `libmy-lib.a` / `my-lib.lib`

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---
sidebar_label: Multi-package workspace
---
# Multi-Package Workspace
A project with three packages: two libraries and a binary.
## Structure
```
workspace/
├── dcr.toml # root workspace
├── lib-core/
│ ├── dcr.toml
│ └── src/core.c
├── lib-utils/
│ ├── dcr.toml
│ └── src/utils.c
└── app/
├── dcr.toml
└── src/main.c
```
## Root dcr.toml
```toml
[package]
name = "my-workspace"
version = "0.1.0"
type = "none"
[build]
inherit = true
language = "c"
standard = "c11"
workspace_only = true
[workspace.lib-core]
path = "lib-core"
[workspace.lib-utils]
path = "lib-utils"
deps = ["lib-core"]
[workspace.app]
path = "app"
deps = ["lib-core", "lib-utils"]
main = true
```
## Packages
`lib-core/dcr.toml`:
```toml
[package]
name = "lib-core"
version = "0.1.0"
type = "none"
[build]
kind = "staticlib"
```
`lib-utils/dcr.toml`:
```toml
[package]
name = "lib-utils"
version = "0.1.0"
type = "none"
[build]
kind = "staticlib"
```
`app/dcr.toml`:
```toml
[package]
name = "app"
version = "0.1.0"
type = "none"
[build]
kind = "bin"
```
## Build
```bash
cd workspace
dcr build # builds everything in correct order
dcr build --workspace app # only app (lib-core and lib-utils built as deps)
dcr run # builds and runs main package
```
Build order (topological sort):
1. `lib-core`
2. `lib-utils` (depends on lib-core)
3. `app` (depends on lib-core, lib-utils)

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---
sidebar_label: OS-dev (flat-bin + archive)
---
# Pure ASM / boot image (flat-bin + archive)
Minimal OS-dev style pipeline: assemble raw binaries with NASM, then pack a FAT floppy/image with an optional boot sector.
## Project layout
```
myos/
dcr.toml
src/
boot.asm # boot sector (512 bytes)
kernel.asm # payload
```
For multiple flat artifacts, use a **workspace** (one member per binary) or separate packages; a single `flat-bin` package produces one binary per source stem.
## Boot package (`flat-bin`)
```toml
[package]
name = "boot"
version = "0.1.0"
[build]
language = "asm"
compiler = "nasm"
kind = "flat-bin"
extension = "bin"
roots = ["src/boot.asm"]
```
```bash
dcr build
# → target/<…>/debug/boot.bin (NASM -f bin, no link)
```
## Disk image after build
```toml
[archive]
output = "target/{profile}/disk.img"
format = "fat12"
size = "1440K"
label = "MYOS"
bootsector = "target/{profile}/boot.bin"
[[archive.layout]]
from = "target/{profile}/kernel.bin"
to = "KERNEL.BIN"
```
* `format`: `fat12`, `fat16`, or `fat32`
* `size`: bytes or `K`/`KB`/`M`/`MB`/`G`/`GB` (default ~1.44 MiB)
* `bootsector`: written only when `offset` is omitted or `0`
* `from` may be a glob; `{profile}` is substituted in paths
## C kernel → flat binary
```toml
[build]
language = "c"
compiler = "clang"
kind = "flat-bin"
freestanding = true
filename = "kernel"
extension = "bin"
ldflags = ["-T", "linker.ld"]
```
Pipeline: objects → temporary linked ELF → `objcopy -O binary` → `kernel.bin`. Requires `objcopy` / `llvm-objcopy` in PATH.
## Other assemblers
| Tool | Notes |
| -------- | --------------------------------------------------------------------------------------- |
| **FASM** | Write `format binary` in the source; DCR writes `\<stem>.bin` directly |
| **GAS** | Assemble `.s` → obj → `objcopy -O binary` |
| **LLC** | `language = "llvm_ir"` → obj → objcopy |
| **MASM** | COFF obj → objcopy (needs binutils/LLVM objcopy) |
## Notes
* Single-file `roots` are supported: `roots = ["src/boot.asm"]`.
* `--force` re-runs `build.steps` / `build.post_steps` as well as recompilation.
* Prefer `kind = "elf"` if you need a relocatable ELF kernel without stripping to raw binary.

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---
sidebar_label: Build profiles
---
# Build Profiles
Profiles allow overriding `[build]` fields for specific build modes.
## Configuration
```toml
[build]
language = "c"
standard = "c17"
cflags = ["-Wall"]
[build.debug]
cflags = ["-O0", "-g"]
[build.release]
cflags = ["-O3", "-DNDEBUG"]
```
## Merge rules
Fields from `[build.\<profile>]` are merged on top of `[build]`:
* **Scalar fields** (strings, numbers, bools) — replaced
* **Arrays** (`cflags`, `ldflags`, ...) — **appended** (extend the `[build]` array)
Set `inherit = false` to disable array inheritance (only profile's own arrays are used).
## Built-in profiles
The default flags for each profile are composed from three config fields:
| Field | debug default | release default |
| ----------- | ------------------ | --------------- |
| `opt_level` | `"0"` | `"3"` |
| `debug` | `true` | `false` |
| `warnings` | `["all", "extra"]` | `[]` |
Which produce the equivalent compiler flags:
| Profile | Effective flags |
| --------- | ---------------------------------------------------------- |
| `debug` | `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDCR_DEBUG` |
| `release` | `-O3 -DNDEBUG` |
Additional build options can be toggled per-profile:
```toml
[build.release]
opt_level = "z"
lto = true
strip = true
panic = "abort"
codegen-units = "1"
[build.debug]
opt_level = "1"
debug = false
warnings = ["all", "error"]
```
## Target-specific profiles
```toml
[build.linux]
cflags = ["-DLINUX"]
[build.windows.debug]
cflags = ["-DWIN32", "-O0", "-g"]
```
Application order (highest priority first):
1. `[build.\<target>.\<profile>]`
2. `[build.\<profile>.\<target>]`
3. `[build.\<target>]`
4. `[build.\<profile>]`
5. `[build]`

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---
sidebar_label: Build system
---
# Build System
## Compiler Backends
DCR supports 7 compilation backends. Selection is automatic based on file extension and `build.compiler` value.
| Backend | Files | When used |
| --------- | --------------------------------- | ------------------------------------- |
| `unix_cc` | `.c`, `.cpp`, `.cxx`, `.cc`, `.S` | gcc/clang on Linux/macOS/BSD |
| `msvc` | `.c`, `.cpp`, `.cxx`, `.cc` | Windows (cl, clang-cl) |
| `gas` | `.s` | ARM/ARM64 assembler (no preprocessor) |
| `nasm` | `.asm`, `.s` | x86/x86_64 NASM assembler |
| `masm` | `.asm` | MASM (ml/ml64) on Windows |
| `fasm` | `.asm`, `.fasm` | Flat Assembler |
| `llvm_ir` | `.ll` | LLVM IR via `llc -filetype=obj` |
## Qt Support
DCR provides native Qt support for automatic meta-object handling (MOC, UIC, RCC).
Enable it by setting `build.qt = true` in `dcr.toml`. DCR will automatically detect Qt-related files (`.ui`, `.qrc`, `.h` with `Q_OBJECT`) and process them.
```toml
[build]
qt = true
```
*Note: Requires `qt6` modules (Core, Widgets, Gui, Svg) installed via `pkg-config`.*
Advanced customization is still possible via `build.steps` if special handling is needed:
```toml
[build.steps]
moc = "moc {in} -o {out}"
```
### Unix CC
* Compiler resolved via `resolve_compiler()`: `DCR_COMPILER` > `DCR_CC` > `[toolchain]` > `build.compiler` > `PATH`
* Supports `.d` files for header dependency tracking
* Flags: `-std=`, `-MMD -MF`, `-c -o`, `-I`, `-L`, `-l`
* Conditional flags based on config:
* `freestanding` or bare-metal target: `-ffreestanding` (compile), `-nostdlib -static` (link)
* `lto`: `-flto` (compile + link)
* `panic = "abort"`: `-fno-exceptions` (C++ only), `-fno-unwind-tables`, `-fno-asynchronous-unwind-tables`
### MSVC
* Supports cl.exe and clang-cl.exe
* Flags: `/std:`, `/Fo:`, `/Fe:`, `/I`, `/link`
### GAS / NASM / MASM / FASM / LLVM-IR
* GAS: `-I`, `-c -o`, `--defsym`
* NASM: `-I`, `-o`, `-D`, `-f` (format: win64/elf64/macho64/macho32/elf32; **`bin` when `kind = "flat-bin"`**)
* MASM: `/nologo /c /Fo\<obj> <source>`
* FASM: `<source> \<output>` (output path is the object file)
* LLVM IR: `-filetype=obj <source> -o \<output>`
## Incremental Builds
Three levels of incrementality:
1. **mtime** — if output is newer than all inputs, skip
2. **`.d` files** — header change tracking (including transitive)
3. **SHA256 fingerprint** — recompile if compiler flags changed (stored in `.dcr_fingerprint`)
## Parallel Compilation
* `thread::scope` for thread pool
* Atomic task queue (`AtomicU64`)
* Mutex on stdout (`OUTPUT_MUTEX`)
* Thread count = `available_parallelism()`, capped by `build.codegen-units` if set
## Build Kinds
| Kind | Type | Path (Linux example) |
| ----------- | ------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------- |
| `bin` | Executable | `target/\<triple>/\<profile>/\<name>` (.exe on Windows) |
| `staticlib` | Static library | `target/\<triple>/\<profile>/lib\<name>.a` (.lib) |
| `sharedlib` | Dynamic library | `target/\<triple>/\<profile>/lib\<name>.so` (.dll/.dylib) |
| `efi` | UEFI application | `target/\<triple>/\<profile>/\<name>.efi` |
| `elf` | ELF without stdlib | `target/\<triple>/\<profile>/\<name>` |
| `none` | Compile only, no link | — |
| `custom` | Full filename+extension control | `target/\<triple>/\<profile>/\<filename>.\<extension>` |
| `flat-bin` | Raw binary | ASM: `\<stem>.bin` (NASM `-f bin` / FASM / GAS·MASM·LLC via objcopy); C/C++: `\<name>.bin` (link + objcopy) |
## Disk images (`[archive]`)
After a successful build, if `[archive]` is present in `dcr.toml`, DCR formats a FAT volume and copies files from `layout` into the image. See [dcr.toml → archive](/docs/reference/dcr-toml#archive).
## Build Steps
DCR supports pre-build and post-build steps:
* `build.steps` — commands before compilation
* `build.post_steps` — commands after compilation
Substitutions: `{stem}`, `{in}`, `{out}`, `{profile}`, `{version}`, `{name}`.
Example Qt codegen via build steps:
```toml
[build.steps]
moc = "moc {in} -o {out}"
```
## pkg-config
Automatic lookup (read from raw config):
```toml
[build]
pkg_config = ["sdl2", "gl"]
```
DCR runs `pkg-config --cflags sdl2 gl` and `pkg-config --libs sdl2 gl` and adds results to compiler/linker flags.
## Variable Substitution
Supported variables:
| Variable | Description |
| ----------------------- | ---------------------------- |
| `{version}` | Package version |
| `{version_major}` | Major version part |
| `{version_minor}` | Minor version part |
| `{version_patch}` | Patch version |
| `{version_suffix}` | Suffix (e.g., `-rc1`) |
| `{version_suffix_dash}` | Suffix with dash |
| `{profile}` | Profile name (debug/release) |
| `{name}` | Package name |

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sidebar_label: Cross-compilation
---
# Cross-Compilation
## Short Names
DCR supports short platform names:
| Short Name | Full Triple |
| ---------- | -------------------------- |
| `linux` | `x86_64-unknown-linux-gnu` |
| `macos` | `x86_64-apple-darwin` |
| `windows` | `x86_64-pc-windows-msvc` |
```bash
dcr build --target windows
```
## Full Triples
```bash
dcr build --target aarch64-unknown-linux-gnu
dcr build --target x86_64-pc-windows-gnu # mingw
dcr build --target armv7-unknown-linux-gnueabihf
```
## clang --target
When using clang, DCR injects `--target=\<triple>` into CFLAGS.
```toml
[build]
compiler = "clang"
target = "aarch64-unknown-linux-gnu"
# Auto: cflags += ["--target=aarch64-unknown-linux-gnu"]
```
## Bare-Metal / Freestanding
For targets containing `none`, `-elf`, `eabi`, or `baremetal`, DCR automatically:
1. **Disables default flags** — no system include paths, no `-l` libc
2. **Injects `-ffreestanding`** at compile time and `-nostdlib -static` at link time
You can also enable freestanding mode explicitly:
```toml
[build]
freestanding = true
```
```bash
dcr build --target aarch64-none-elf
```
## Target Directory
By default, the compilation output directories are structured as follows:
* **Linux and BSD**: Always output to `target/\<triple>/\<profile>/` (using host triple if no target is specified).
* **macOS and Windows (without target)**: Output to `target/\<profile>/`.
* **macOS and Windows (with explicit target)**: Output to `target/\<triple>/\<profile>/`.

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sidebar_label: dcr.toml overview
---
# dcr.toml
Main project configuration file. Located at the project root.
## Structure
```toml
[package]
# required fields
[build]
# build settings
[build.debug] # optional: debug override
[build.release] # optional: release override
[build.linux] # optional: Linux override
[build.windows] # optional: Windows override
[build.windows.debug] # target + profile combination
[toolchain]
# compiler/linker paths
[dependencies]
# project dependencies
[workspace]
# multi-package configuration
[run]
# run settings
[archive]
# optional: pack FAT disk image after build
```
## [package]
| Field | Required | Description |
| ------------- | -------- | --------------------------------------------------------------------------------------------------------------- |
| `name` | yes | Project name |
| `version` | yes | Semantic version of the **project** |
| `dcr-version` | no | Semver of the **dcr tool** this project targets. Written by `dcr new` / `dcr init` to the current tool version. |
| `type` | no | `app`, `lib`, `none` (defaults to `"none"`) |
| `license` | no | SPDX license identifier |
| `author` | no | Author |
```toml
[package]
name = "my-app"
version = "0.1.0"
dcr-version = "0.8.4"
type = "app"
license = "MIT"
author = "John Doe"
```
### `package.dcr-version`
Optional pin of the DCR CLI the project was written for. On every `dcr.toml` load:
| Situation | Behaviour |
| ------------------------------ | ---------------------------------------------------------- |
| Field missing / empty | Warning: add `dcr-version` (set by `dcr new` / `dcr init`) |
| Running dcr **older** than pin | Warning: upgrade dcr (`dcr --update`) |
| Running dcr **newer** than pin | Warning: review changelog, bump the pin when ready |
| Equal | Silent |
| Invalid semver | Warning once, field ignored |
Never fails the command — warnings only. Pre-release suffixes (`1.0.0-dev`) are ignored for comparison (`1.0.0-dev` ≡ `1.0.0`).
## [build]
...
* `build.qt` — (bool) Enable automatic Qt meta-object handling (MOC, UIC, RCC). Requires `qt6` modules installed via `pkg-config`.
| Field | Default | Description |
| ---------------- | ------------- | --------------------------------------------------------------------------------------------------------- |
| `language` | `"c"` | `"c"`, `"c++"`, `"cpp"`, `"cxx"`, `"asm"`, `"llvm_ir"`, `"llvm-ir"`, `"ll"` (optional, defaults to `"c"`) |
| `standard` | `"c11"` | C standard (`c11`, `c17`, `c23`) |
| `cxx_standard` | — | C++ standard (`c++17`, `c++20`, `c++23`) |
| `compiler` | `"clang"` | Preferred compiler (optional, defaults to `"clang"`) |
| `kind` | `"bin"` | `bin`, `staticlib`, `sharedlib`, `efi`, `elf`, `none`, `custom`, `flat-bin` |
| `target` | host | Target triple for cross-compilation |
| `platform` | `"native"` | `native`, `efi` |
| `cflags` | `[]` | Additional C/C++/ASM flags |
| `ldflags` | `[]` | Additional linker flags |
| `filename` | `""` | Custom output file name |
| `extension` | `""` | Custom file extension (for `flat-bin`, default is `bin`) |
| `roots` | `["src"]` | Source roots: directories and/or individual source/header files |
| `exclude` | `[]` | Exclude patterns |
| `include` | `[]` | Additional include directories |
| `src_disable` | `false` | Disable auto source discovery |
| `inherit` | `false` | Inherit build from workspace root |
| `clean` | `[]` | Glob patterns for custom clean paths |
| `out_dir` | `""` | Custom output directory |
| `workspace_only` | `false` | Workspace-only, not built standalone (no `language`/`compiler` required) |
| `freestanding` | `false` | Compile in freestanding mode (`-ffreestanding` + `-nostdlib -static`) |
| `opt_level` | — | Optimization level: `0`-`3`, `"s"`, `"z"` (derived from profile if omitted) |
| `debug` | profile-based | Emit debug symbols (`-g`): `true` in debug, `false` in release |
| `lto` | `false` | Link-time optimization (`-flto` for both compiler and linker) |
| `strip` | `false` | Strip symbols from output (`-s` in ldflags) |
| `warnings` | `[]` | Warning flags (e.g. `"all"`, `"extra"`, `"pedantic"`); engine adds `-Wall -Wextra` in debug if empty |
| `panic` | `""` | Panic strategy: `"abort"` disables exceptions and unwind tables |
| `codegen-units` | `""` | Max parallel compilation jobs (`"0"` = auto) |
| `qt` | `false` | Enable automatic Qt meta-object handling (MOC, UIC, RCC) |
Settings from raw config (not in typed struct):
* `pkg_config` — list of pkg-config packages
* `ldscript` — linker script path
* `build.steps` / `build.post_steps` — codegen steps
## Per-language overrides: `[build.c]`, `[build.cxx]`, `[build.asm]`, `[build.llvm_ir]`
Each language can have its own table that overrides the flat `[build]` settings:
```toml
[build]
compiler = "clang"
standard = "c11"
[build.c]
standard = "c23"
compiler = "gcc"
[build.cxx]
standard = "c++23"
compiler = "g++"
[build.asm]
compiler = "nasm"
flags = ["-felf64"]
[build.llvm_ir]
compiler = "llc"
```
The flat `[build]` acts as fallback; per-language tables take precedence for their language.
Example:
```toml
[build]
language = "c++"
standard = "c23"
cxx_standard = "c++23"
compiler = "clang"
kind = "sharedlib"
cflags = ["-Wall", "-Wextra"]
opt_level = "z"
lto = true
strip = true
panic = "abort"
codegen-units = "2"
```
## [toolchain]
```toml
[toolchain]
cc = "/usr/bin/clang"
cxx = "/usr/bin/clang++"
as = "/usr/bin/as"
ar = "/usr/bin/ar"
ld = "/usr/bin/ld.lld"
```
Raw config also supports `uic`, `moc`, `rcc` for Qt codegen.
## [dependencies]
See [dependencies](/docs/reference/dependencies).
## [run]
```toml
[run]
cmd = "./target/{profile}/{name}"
```
Substitutions:
* `{version}` — package version
* `{version_major}`, `{version_minor}`, `{version_patch}`, `{version_suffix}`, `{version_suffix_dash}` — version parts
* `{profile}` — debug / release
* `{name}` — package name
Default `cmd` = `./target/{profile}/{name}` (macOS/Windows) or `./target/\<triple>/\<profile>/\<name>` (Linux).
## [workspace]
See [workspaces](/docs/reference/workspaces).
## [archive]
Optional post-build step: format a FAT volume and copy built artifacts into a disk image. Runs after a successful package build (and after workspace member builds that define `[archive]`).
Requires DCR built with the `archive` Cargo feature (`cargo build --features archive`). Release binaries include this feature.
| Field | Required | Description |
| ------------ | -------- | ------------------------------------------------------------------------------------------- |
| `output` | yes | Image path relative to project root (`{profile}` allowed) |
| `format` | yes | `fat12`, `fat16`, or `fat32` |
| `size` | no | Image size: bytes or `K`/`KB`/`M`/`MB`/`G`/`GB` (default `1474560` ≈ 1.44 MiB) |
| `offset` | no | Byte offset of the FAT volume inside the image (default `0`) |
| `label` | no | Volume label (max 11 chars, default `VOLUME`) |
| `bootsector` | no | Path to a 512-byte boot sector written at offset 0 when `offset` is 0 (`{profile}` allowed) |
| `layout` | no | List of `{ from, to }` entries (files or globs → path inside the volume) |
```toml
[archive]
output = "target/{profile}/disk.img"
format = "fat12"
size = "1440K"
label = "MYOS"
bootsector = "target/{profile}/boot.bin"
[[archive.layout]]
from = "target/{profile}/kernel.bin"
to = "KERNEL.BIN"
[[archive.layout]]
from = "assets/*"
to = "/"
```
Typical pairing with `kind = "flat-bin"` (NASM `-f bin`) for bootloaders and pure-ASM OS images.
## `flat-bin` (kind)
Produces a raw binary (default extension `bin`) for boot sectors, kernels, and freestanding payloads.
### Assemblers
| Tool | Language / compiler | How flat-bin is produced |
| ---- | ------------------------------------------ | -------------------------------------------- |
| NASM | `language = "asm"`, `compiler = "nasm"` | `-f bin` → `\<stem>.bin` |
| FASM | `compiler = "fasm"` | direct write (use `format binary` in source) |
| GAS | `compiler = "as"` / `"gas"` | assemble → `objcopy -O binary` |
| MASM | `compiler = "ml"` / `"ml64"` | assemble → `objcopy -O binary` |
| LLC | `language = "llvm_ir"`, `compiler = "llc"` | `-filetype=obj` → `objcopy -O binary` |
```toml
[build]
language = "asm"
compiler = "nasm"
kind = "flat-bin"
extension = "bin"
roots = ["src/boot.asm"]
```
### C / C++
Compile all sources, link with `-nostdlib -static` (plus your `ldflags` / `ldscript`), then convert the intermediate ELF/PE with `objcopy -O binary` to `\<filename|name>.bin`.
```toml
[build]
language = "c"
compiler = "clang"
kind = "flat-bin"
freestanding = true
filename = "kernel"
extension = "bin"
ldscript = "linker.ld"
ldflags = ["-T", "linker.ld"]
```
Notes:
* Multi-file **ASM** packages emit one `\<stem>.bin` per source; **C/C++** emit a single project binary.
* `objcopy` tools tried in order: `llvm-objcopy`, `objcopy`, `gobjcopy`.
* Incompatible with `build.qt = true`.
* `dcr run` rejects `flat-bin` (not a host executable).

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sidebar_label: Dependencies
---
# Dependencies
## Formats
The `[dependencies]` section supports three formats:
### String (registry)
```toml
[dependencies]
fmt = "10.1.1"
spdlog = "1.12"
catch2 = "3.4.0"
```
The version string is used as-is for registry lookup.
### Table (git)
```toml
[dependencies]
dcr-math = { git = "https://github.com/dexoron/dcr-math-lib.git", tag = "v0.1.0" }
```
Fields: `git`, `branch`, `tag`, `rev`, `mode`, `include`, `lib`, `libs`.
### Table (path)
```toml
[dependencies]
mylib = { path = "../mylib" }
```
For a prebuilt external library, specify its layout explicitly. The three
arrays are paths relative to the dependency root (`include`, `lib`) and linker
names (`libs`):
```toml
[dependencies]
dcr-math = { path = "../deps/dcr-math", include = ["include"], lib = ["lib"], libs = ["dcr-math"] }
```
## Registry
DCR uses a package registry for dependency lookup by name.
```toml
# ~/.dcr/config.toml
[registry.default]
url = "https://index.dcr.dexoron.tech"
priority = 1
```
Registry priority: order in `config.toml`. The `DCR_INDEX_PATH` variable overrides the path to `index.json`.
## Git dependencies
Git dependencies are cloned into `~/.dcr/git/`; their exact checked-out commit is written to `dcr.lock`.
Both Git and path dependencies have two modes:
* **DCR package:** the source has `dcr.toml`. DCR builds it before the consumer and uses the package name from its manifest for linking.
* **Prebuilt library:** it provides existing headers and binaries through `include`, `lib`, and `libs`. DCR passes them to the compiler/linker without building the dependency.
The mode is normally detected automatically. Use `mode = "build"` or `mode = "prebuild"` when a source contains both a manifest and prebuilt artifacts and you need to choose explicitly.
`dcr-math-lib` publishes both forms. Select its prebuilt library explicitly:
```toml
[dependencies]
dcr-math = { git = "https://github.com/dexoron/dcr-math-lib.git", tag = "v0.1.0", mode = "prebuild", include = ["include"], lib = ["lib"], libs = ["dcr-math"] }
```
DCR supports specifying branch/tag/rev for git sources:
* `branch` — switch to a branch
* `tag` — switch to a tag
* `rev` — switch to a specific commit
* `features` — feature flags (parsed, but does not affect build)
## Path dependencies
Local paths may point at a DCR package or a prebuilt external library. A path DCR package is built before its consumer, including its own path/git dependencies. DCR detects dependency cycles. A prebuilt library is never built by DCR; it is linked from the directories declared in its dependency entry.
```toml
[dependencies]
mylib = { path = "/abs/path/to/lib" }
mylib = { path = "../relative/path" }
```
For DCR packages, the package name from `dcr.toml` is used for linking (so the dependency key may differ from the library name). Header resolution includes the packaged `target/include` directory and link search includes `target/lib`.
### Recommended library layouts
Buildable DCR library:
```text
dcr-math-lib/
├── dcr.toml
└── src/
├── dcr_math.c
└── dcr_math.h
```
Prebuilt library:
```text
dcr-math-lib/
├── include/
│ └── dcr_math.h
└── lib/
└── libdcr-math.a # or .so / .lib
```
`libs` contains linker names without the `lib` prefix and file extension: use
`["dcr-math"]` for `libdcr-math.a`.
If one repository contains both forms, keep the prebuilt files in `include/` and `lib/` and select the mode explicitly:
```toml
[dependencies]
dcr-math = { git = "https://github.com/dexoron/dcr-math-lib.git", tag = "v0.1.0", mode = "prebuild", include = ["include"], lib = ["lib"], libs = ["dcr-math"] }
```
For a local copy, replace `git` with `path = "../dcr-math-lib"`. In `prebuild` mode DCR does not run the dependency build, even when `dcr.toml` is present.
## dcr.lock
Dependency lock file. Contains package names and sources.
Created during `dcr build` for resolved registry, path, and Git dependencies. Not updated during `dcr add` — only on the next `dcr build`.
## Resolution process
1. Resolve dependency sources (registry → git → path)
2. Fetch git dependencies into `~/.dcr/git/` and check out the requested ref
3. Build DCR package dependencies recursively
4. Collect `include_dirs`, `lib_dirs`, `libs` for the compiler

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sidebar_label: Environment variables
---
# Environment Variables
## DCR_COMPILER
Overrides the compiler for all languages. **Highest priority.**
```bash
export DCR_COMPILER=clang
dcr build
```
Compiler resolution priority:
1. `DCR_COMPILER` (env)
2. `DCR_CC` / `DCR_CXX` / `DCR_AS` (env)
3. `[toolchain]` (dcr.toml)
4. `build.compiler` (dcr.toml)
5. `PATH`
## DCR_CC / DCR_CXX / DCR_AS
Per-language override (lower priority than `DCR_COMPILER`, higher than `[toolchain]`).
```bash
export DCR_CC=gcc-14
export DCR_CXX=g++-14
export DCR_AS=arm-linux-gnueabihf-as
```
## DCR_LD / DCR_AR
Override linker and archiver.
```bash
export DCR_LD=ld.lld
export DCR_AR=llvm-ar
```
## DCR_DEBUG
Enables debug mode — prints all compilation commands to stderr before execution.
```bash
export DCR_DEBUG=1
dcr build
```
## DCR_INDEX_PATH
Overrides the path to the registry `index.json`.
```bash
export DCR_INDEX_PATH=/custom/path/index.json
```
Default: `~/.dcr/index.json`.
## DCRUP_MIRROR
Download mirror for `dcrup` (prebuilt binaries only).
```bash
export DCRUP_MIRROR=auto # cf → gh → sf → ya (default)
export DCRUP_MIRROR=cf # CloudFlare CDN
export DCRUP_MIRROR=gh # GitHub Releases
export DCRUP_MIRROR=sf # SourceForge
export DCRUP_MIRROR=ya # Yandex CDN (RU fallback)
```
CLI override: `dcrup install stable --mirror cf`.
## DCRUP_HOME / DCRUP_BIN / DCRUP_REPO
Installer layout and source clone URL:
```bash
export DCRUP_HOME=~/.dcr
export DCRUP_BIN=~/.dcr/bin
export DCRUP_REPO=https://github.com/dexoron/dcr
```

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sidebar_label: Platform support
---
# Platform Support
## Target Triples
DCR normalizes target triples. Short platform names are expanded to full triples.
### Linux
```
target/<arch>-unknown-linux-<env>/<profile>/
```
Architectures: `x86_64`, `aarch64`, `i686`, `armv7`, `riscv64` (host-detected).
Environments: `gnu` (default), `musl`.
Artifact type: ELF. Extensions: `.so` (sharedlib), `.a` (staticlib).
### macOS
```
target/<profile>/ (default) or target/<triple>/<profile>/ (with target)
```
Architectures: `x86_64`, `aarch64` (host-detected).
Extensions: `.dylib` (sharedlib), `.a` (staticlib).
### Windows
```
target/<profile>/ (default) or target/<triple>/<profile>/ (with target)
```
Architectures: `x86_64`, `aarch64`.
Environments: `msvc` (default), `gnu` (MinGW).
Extensions: `.exe` (bin), `.lib` (staticlib), `.dll` (sharedlib), `.efi` (UEFI).
### BSD
```
target/<arch>-unknown-<os>/<profile>/
```
Supported systems: `freebsd`, `openbsd`, `netbsd`, `dragonfly`.
## Host Detection
DCR uses `std::env::consts::ARCH` and `std::env::consts::OS` for host platform detection. Used as fallback when `target` is not specified.

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sidebar_label: Workspaces
---
# Workspaces
Workspaces allow managing multiple packages in a single repository.
## Configuration
```toml
[workspace.lib-core]
path = "lib-core"
[workspace.lib-utils]
path = "lib-utils"
deps = ["lib-core"]
[workspace.app]
path = "app"
deps = ["lib-core", "lib-utils"]
main = true
```
### Member fields
| Field | Description |
| ------ | ------------------------------------------------ |
| `path` | Path to the package (relative to workspace root) |
| `deps` | Dependencies on other members |
| `main` | Mark as the main package |
## Topological sort
DCR automatically sorts packages by dependencies: package A is built before B if B depends on A.
Cyclic dependencies are detected and cause an error.
## Build
```bash
dcr build # build all packages in dependency order
dcr build --workspace app # build only app (dependencies built automatically)
```
When building a workspace, DCR automatically injects include and library paths of dependent workspace members:
* **Include Paths**: Automatically resolves and injects header directories of dependencies, including the member's `src/` directory, local `include/` directory, and the packaged `target/include` directory.
* **Library Paths**: Injects compiled library search paths (`target/lib` as well as target-specific build folders) to allow automatic linking with member libraries.
## Clean
```bash
dcr clean # clean only root target/
dcr clean --all # clean target/ of all packages
```
## Inheritance
If a member has `inherit = true` in its `[build]` section, fields from the root `[build]` are merged into the member:
```toml
# root dcr.toml
[build]
inherit = true
language = "c"
standard = "c17"
# member inherits language and standard
```
## Workspace-only root (no build of its own)
A workspace root can set `workspace_only = true` — it won't be built itself, and doesn't need `language` or `compiler`:
```toml
[package]
name = "my-workspace"
version = "0.1.0"
[build]
workspace_only = true
kind = "bin"
[workspace]
lib-core = { path = "lib-core" }
app = { path = "app", deps = ["lib-core"] }
```

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sidebar_label: Self Update
---
# Self Update
## dcr --update
Automatic update to the latest version. Downloads a binary (not an archive) from GitHub Releases and replaces the current executable.
```bash
dcr --update
```
## How it works
1. DCR detects the current platform and architecture
2. Fetches the latest release from `api.github.com/repos/dexoron/dcr/releases/latest`
3. Compares versions
4. Downloads the matching asset (direct binary URL, not archive)
5. Replaces the current executable via `self_replace`
## Asset naming
Pattern: `dcr-\<triple>` or `dcr-\<triple>.exe`
| Platform | Asset name |
| -------------- | -------------------------------- |
| Linux x86_64 | `dcr-x86_64-unknown-linux-gnu` |
| macOS x86_64 | `dcr-x86_64-apple-darwin` |
| macOS ARM64 | `dcr-aarch64-apple-darwin` |
| Windows x86_64 | `dcr-x86_64-pc-windows-msvc.exe` |
## AUR
If DCR was installed via AUR, `--update` shows a warning:
```
Update via package manager: yay/paru -Syu {package_name} or sudo pacman -Syu {package_name}
```
## Errors
* Cannot detect platform — error
* Cannot fetch release — error with URL
* No write permission — error (use `sudo` or manual install)

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---
sidebar_label: Running tests
---
# Running Tests
## Execution
```bash
dcr test
```
Builds the project, then compiles and runs test files from `tests/`.
## Profiles
```bash
dcr test # debug (default)
dcr test --release # release
dcr test --debug # explicit debug
```
## Output
```
=====================
Testsuite summary
=====================
TOTAL: 5
PASS: 3
SKIP: 1
FAIL: 1
=====================
```
## Exit code
* 0 — all tests passed (FAIL = 0)
* 1 — test failures or build error
## What gets built
* All `.c` files from `tests/` (`.cpp` not supported)
* Include path: `tests/` (for `dcr_test.h`)
* Linked with project if `package.type = "lib"` or `kind = "staticlib"`/`"sharedlib"`

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---
sidebar_label: Test framework (EXPECT, TEST, ...)
---
# Test Framework
DCR has a built-in minimal test framework for C.
## Macros
### `EXPECT(expr)`
Asserts that an expression is true.
```c
EXPECT(1 + 1 == 2);
EXPECT(ptr != NULL);
```
### `SKIP(reason)`
Skips a test with a message.
```c
SKIP("not implemented on Windows");
```
### `TEST(name)`
Defines a test.
```c
TEST(addition) {
EXPECT(1 + 1 == 2);
EXPECT(2 + 2 == 4);
}
```
### `TEST_CASE(name)`
Registers a test case.
```c
TEST_CASE(math) {
EXPECT(1 + 1 == 2);
}
```
## Initialization
```bash
dcr test --init
```
Creates:
* `tests/dcr_test.h` — framework header (do not edit)
* `tests/test.c` — template with example test
## Structure
```
tests/
├── dcr_test.h # framework (do not edit)
├── test.c # main tests
└── ... # additional .c test files
```
Only `.c` files are compiled (`.cpp` is not supported).

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---
sidebar_label: Введение
---
# DCR — Инструмент сборки C/C++ & Пакетный менеджер
<details>
<summary>Быстрая справка</summary>
```bash
# Installation (dcrup)
curl -fsSL https://sh.dcr-tool.ru | sh -s -- self-install
export PATH="$HOME/.dcr/bin:$PATH"
dcrup install stable # auto: cf → gh → sf → ya
# dcrup install stable --mirror cf # CloudFlare / GitHub / SourceForge / Yandex
# Create a project
dcr new my-app
cd my-app
# Build and run
dcr build
dcr run
# Run tests
dcr test
# Add a dependency
dcr add fmt
# Generate IDE files
dcr gen vscode
```
</details>
## Содержание
| Раздел | Описание |
| --------------------------------------------------- | -------------------------------------------- |
| [Начало работы](/docs/getting-started/installation) | Установка и первые шаги |
| [Команды](/docs/commands/project-commands) | Все CLI-команды DCR |
| [Ссылка](/docs/reference/dcr-toml) | Конфигурация, сборка, зависимости, платформы |
| [Тестирование](/docs/testing/test-framework) | Встроенный фреймворк тестирования |
| [Рецепты](/docs/recipes/cross-to-windows) | Типовые сценарии |
| [Интеграция с IDE](/docs/ide-integration) | VS Code, CLion, compile_commands.json |
| [Автоматическое обновление](/docs/self-update) | Автообновление |
| [Часто задаваемые вопросы](/docs/faq) | Частые вопросы |
| [Журнал изменений](/docs/changelog) | История версий |
| [Лицензия](/docs/license) | Лицензии DCR и вендорных библиотек |
| [Внести свой вклад](/docs/contributing) | Разработка DCR |
## Особенности
* **Инкрементальная сборка** — mtime + `.d` headers + SHA256 fingerprint
* **Параллельная компиляция** — thread::scope, атомарная очередь задач
* **7 backends** — gcc/clang (unix_cc), MSVC/clang-cl (msvc), GAS, NASM, MASM, FASM, LLVM IR
* **8 project kinds** — bin, staticlib, sharedlib, efi, elf, none, custom, flat-bin
* **Disk images** — optional `[archive]` packs FAT12/16/32 images after build
* **Cross-compilation** — short names (linux, windows, macos) и полные triples
* **Профили** — debug / release с переопределением любого поля
* **Workspaces** — мультипакетные проекты с топологической сортировкой
* **Registry + Git + Path** — три механизма зависимостей
* **Генерация IDE** — VS Code, CLion, compile_commands.json, JSON metadata
* **pkg-config** — автоматический поиск системных библиотек
* **Команда `--help` для каждой команды** — `dcr build --help`, `dcr new --help` и т. д.
* **Справочные страницы** — `man dcr`, `man dcr-build`, `man dcr-new`

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---
sidebar_label: Список изменений
---
# Список изменений
## 0.9.0 (2026-08-31)
* **Download mirrors in `dcrup`** — `--mirror auto|cf|gh|sf|ya` and `DCRUP_MIRROR`.
Default `auto` tries **cf → gh → sf → ya** (CloudFlare CDN, GitHub, SourceForge, Yandex CDN).
* **Complete Path/Git dependencies** — DCR packages from `path` and `git` are built before their consumer. Git sources are cached in `~/.dcr/git`, support `branch`/`tag`/`rev`, and record the exact commit in `dcr.lock`.
* **Build and prebuild modes** — `path` and `git` dependencies can build a DCR package from `dcr.toml` or link existing `include`/`lib`/`libs` artifacts; `mode = "build"` / `"prebuild"` selects explicitly when both forms are present.
* **Prebuilt dependency examples** — documentation now shows the `dcr-math-lib` Git repository and recommended build/prebuilt layouts for both `git` and `path`.
* **Transitive dependency builds and cycle reporting** — DCR recursively builds DCR packages and reports a clear dependency chain for cycles.
* **Bare path arguments for `dcr add`** — `dcr add mylib ../mylib` now works in addition to the explicit `path:` form.
* **Removed `install.sh` / `install.ps1` / `install_bsd.sh`** — superseded by `dcrup`.
## 0.8.5 (2026-08-08)
* **`package.dcr-version`** — optional CLI version pin in `dcr.toml`.
`dcr new` / `dcr init` write the current version. On config load:
* missing / empty pin → warn "add dcr-version";
* dcr older than pin → warn "update dcr";
* dcr newer than pin → warn "check changelog, update pin";
* equal → silent.
Commands do not fail, warning only (once per path per process).
## 0.8.4 (2026-08-04)
**Added:**
* **`.dcr/` directory** — shared machine-readable build facts for IDE integrations:
* `.dcr/compile_commands.json`
* `.dcr/build-info.json` (`schemaVersion`, `artifact_path`, `profile`, …)
* `.dcr/toolchain.json` (compiler/debugger paths, moc/uic/rcc)
* `.dcr/ide/` (placeholder for IDE lock files)
* **`dcr gen project-info`** — `target`, `target_dir`, `artifact_path`, `artifact_kind`, `source_roots`, `include_globs`, `exclude_globs`; absolute/canonical paths.
* **`dcr build --print-artifact-path`** — one absolute artifact path line on stdout after a successful build.
* **`dcr gen … --quiet` / `-q`** — suppress human success logs for gen subcommands.
* **`.clangd`** — created on first gen with `CompilationDatabase: .dcr` (`# managed by dcr gen`); custom `.clangd` is not overwritten.
* **Helpers** `canonicalize_path`, `atomic_write`, `ensure_dcr_dir`; pure `resolve_artifact_path` via `platform::*`.
* **`dcr new` / `dcr init`** — add `.dcr/` to `.gitignore`.
**Changed (breaking):**
* **`compile_commands.json` moved** from project root to **`.dcr/compile_commands.json`**.\
clangd discovers it via `.clangd` / `--compile-commands-dir=.dcr`.\
CLion and VSCode generators updated accordingly.
* **Atomic write** for compile_commands (tmp + rename).
* **`gen vscode` / `gen clion` launch/run** — use the same artifact path resolver as `project-info` / `build-info.json`.
**Fixed:**
* Launch configs no longer hardcode `target/\<profile>/\<name>` without the Linux triple segment.
* Symlink/mount roots: best-effort canonicalize for root and compile database paths.
## 0.8.3 (2026-08-03)
### Добавлено:
* **`dcr run -- \<args>...`** — cargo-style argument forwarding after a bare `--`\
(`dcr run --release -- --test_help`). Applies to direct binary runs and `[run].cmd`.
* **Tests** — host target section `ldflags` without CLI `--target`; run-arg forwarding; `split_double_dash` unit tests.
### Изменено:
* **Native builds resolve the host triple** — without `--target` / package `build.target`, host sections such as\
`[build.x86_64-unknown-linux-gnu]` apply again (`cflags` / `ldflags` / toolchain).\
Previously the target was empty and those sections were ignored while artifacts already used the host triple path.
* **Empty target** — no more `Unknown target ''` warning.
* **`dcr run --help` / man `dcr-run`** — document `--` forwarding.
### Исправлено:
* **Native artifact paths on Windows and macOS** — without an explicit `--target` / `build.target`, artifacts use `target/\<profile>`, so `dcr run` and flat-bin find the build output.
* Target-specific `ldflags` missing on native host builds (e.g. micro-lang + `libsct-elf`).
* Spurious empty-target warning.
## 0.8.2 (2026-07-22)
### Добавлено
* **Compile progress `[N/M]`** — live TTY status line (`compile pkg v0.1.0 [12/41]`) so long mono-package builds do not look hung.
* **DCR status style** — fixed-width verbs: `project`, `compile`, `dep`, `ready`, `pack`, `done`, `run`.
* **Cargo feature `archive`** — optional FAT packing via `fatfs` (`cargo build --features archive`). Release CI builds with the feature; without it `[archive]` fails with a clear message.
* **Tests** — `flat_bin_nasm_build`, package `build.target` without CLI `--target`, stricter workspace `clean --all`.
* **CI expansion** — unit + integration on Linux/macOS/Windows, archive feature job, rust-cache, clippy default + all-features (see `.github/workflows/ci.yml`).
### Изменено
* **No forced host triple from CLI** — without `--target`, package/member `build.target` is honored (bare-metal / ISO `post_steps` paths).
* **Relative include/lib flags** (`-I`, `-i`, `-isystem`, `-idirafter`, `-L`, `-T`) absolutized against the package root under workspace builds.
* **`dcr clean --all`** — no spam for members without a local `target/` (shared root `target/`).
* **`error` / `warn`** — red / yellow on stderr; CLI fully English (`Hint:`).
* **Help / man** — list `add`, `lint`, `setup`; unknown command exits with code 1.
* **Tool NotFound** — `linker not found: ld.lld …` / `{tool} not found …` instead of raw `os error 2`.
## 0.8.1 (2026-07-20)
### Added
* **`build.kind = "flat-bin"`** — raw binary (default `.bin`) for OS-dev payloads:
* **NASM** — `-f bin` → `\<stem>.bin`
* **FASM** — direct output (`format binary` in source)
* **GAS / MASM / LLC** — object → `objcopy -O binary` → `\<stem>.bin`
* **C/C++** — objects → freestanding link → `objcopy -O binary` → `\<name>.bin`
* Requires `llvm-objcopy` / `objcopy` / `gobjcopy` except for NASM/FASM direct emit
* **`[archive]` section** — FAT12/16/32 disk images after build (`output`, `format`, `size`, `offset`, `label`, `bootsector`, `layout`). From 0.8.2 requires feature `archive`.
* **Single-file `build.roots`** — a root may be a single source or header file, not only a directory.
### Changed
* **`--force`** also re-runs `build.steps` and `build.post_steps`.
* **`dcr run` on workspace-only root** — if `[run].cmd` is set, run that after build; otherwise delegate to a workspace member.
## 0.8.0 (2026-07-18)
### Added
* **Dedicated Build Engine (`src/core/build/engine.rs`)** — decoupled the build orchestration logic completely from the CLI front-end wrapper in `src/cli/build.rs` to a reusable, decoupled core build engine.
* **Polymorphic Language Model (`Language` trait)** — introduced the abstract `Language` trait (`src/core/build/language/mod.rs`). File scanning, compiler resolution, and flags handling are now encapsulated in dedicated language modules for C, C++ (including Qt code generation), LLVM IR, and ASM (GAS, NASM, FASM, MASM).
* **Polymorphic Compilation Dispatch (`Builder` trait)** — introduced the `Builder` trait to generalize builder invocations (`src/core/build/builder/mod.rs`). Consolidated GCC/Clang logic into `builder/cc_common.rs` and Microsoft Visual C++ logic into `builder/msvc/`.
* **Per-Language Configuration overrides (`[build.\<lang>]`)** — introduced support for configuring language-specific compiler, standard, and flags (e.g. `[build.c]`, `[build.cxx]`, `[build.asm]`) independently in `dcr.toml`.
* **Automatic Workspace Dependency Injection** — during workspace builds, include/lib paths of dependent workspace members (including their source headers, local `include/` folders, and build target `target/include` / `target/lib` folders) are automatically resolved and injected.
* **`BuildReporter` Event System** — decoupled build orchestration output into a structured event-driven reporter model (`src/core/build/report.rs`), making DCR suitable for library embedding and IDE integrations without stderr capturing.
* **Build Cancellation Support** — introduced thread-safe cancellation tokens (`Arc\<AtomicBool>`) allowing clients to safely abort compile runs mid-execution.
* **TOML Formatting & Custom Keys Preservation** — migrated the config editor to `toml_edit`, preserving all unknown/user-defined TOML keys, structures, and comments during file write operations (e.g., in `dcr add`).
* **Path Dependencies Target Include Resolution** — local path dependencies configured via tables now correctly expose headers built and packaged into their `target/include` folder to consumer packages.
* **Modular Integration Test Suite** — refactored the monolith `tests/cli_basic.rs` file into clean, specialized integration tests: `cli_build.rs`, `cli_deps.rs`, `cli_lint.rs`, `cli_new.rs`, `cli_qt.rs`, `cli_test.rs`, `cli_workspace.rs`.
### Changed
* **Consolidated Linking and Archiving** — artifact generation (linking executables/shared libraries and archiving static libraries) consolidated into a single `src/core/build/builder/artifact.rs` module.
* **Workspace-Aware member execution** — `dcr run` executed at the workspace root of a `workspace_only` project now triggers the member build inside the workspace context using the `--workspace` parameter, preventing standalone build issues.
* **Elimination of Global State** — removed global variables and states from the build core, encapsulating build logic inside isolated `BuildContext` structs for thread safety.
* **Build Cache Separation** — relocated mtime tracking, incremental caching, and header-dependency checking logic to `src/core/build/cache.rs`.
* **Modularized Pre-build Steps** — decoupled generator scripts and pre-build commands parsing into `src/core/build/steps.rs`.
## 0.7.4 (2026-06-17)
### Added
* **Native Qt support** — automatic meta-object handling (MOC, UIC, RCC) added when `build.qt = true` is set in `dcr.toml`.
* **`dcr lint` command** — C/C++ static analysis via `clang-tidy`. Supports `--fix` for automatic fixes. Respects `build.roots` and `build.src_disable` from config.
* **Three new assembler backends**:
* **MASM** (`compiler = "ml"` / `"ml64"`) — Microsoft Macro Assembler.
* **FASM** (`compiler = "fasm"`) — Flat Assembler.
* **LLVM IR** (`compiler = "llc"`) — compiles `.ll` files via `llc -filetype=obj`.
* **Shared ASM pipeline** — linking and archiving logic consolidated into `core/builder/asm.rs`. Adding a new assembler backend now takes ~30 lines.
* **Filesystem utilities** — `to_hex()` and `home_dir()` extracted to `utils/fs.rs`.
* **Build utilities** — `normalize_target()`, `normalize_kind()`, `normalize_platform()`, `default_profile_flags()` extracted to `utils/build.rs`.
* **Backend helpers** — `asm_lang_flag()`, `source_extensions()`, `elapsed_secs()` added to `core/builder/common.rs`.
* **Full Bare-Metal / Freestanding Automation** — introduced the `build.freestanding = true` configuration option. When enabled (or when a bare-metal target is detected), DCR automatically injects `-ffreestanding` during compilation and both `-nostdlib` and `-static` during linking.
* **Artifact Optimization (LTO & Strip)** — added `build.lto` (auto-injects `-flto` for compiler and linker) and `build.strip` (automatically strips debug symbols via linker `-s` flag) options to `dcr.toml`.
* **Compilation Thread Control** — added the `build.codegen-units` option to strictly limit the maximum number of parallel jobs utilized by the custom `parallel_build` worker pool.
* **Panic Behavior Management** — added `build.panic = "abort"` support. For C++ targets, it automatically strips exception handling and unwind tables via `-fno-exceptions`, `-fno-unwind-tables`, and `-fno-asynchronous-unwind-tables`.
### Changed
* **Intelligent Default Flags Generation** — automated injection of fallback optimization (`-O3`/`-O0`), debug (`-g`), and warning (`-Wall -Wextra`) flags is now suppressed for bare-metal and freestanding builds if `build.cflags` are overridden.
* **Centralized Bare-Metal Detection** — relocated the `is_bare_metal_target` helper to common build utilities (`src/utils/build.rs`) for unified access across the building core.
* **Architectural Refactoring**:
* Renamed `src/config.rs` to `src/templates.rs`.
* Started consolidation of configuration and build orchestration logic.
## 0.7.3 (2026-06-13)
### Added
* **`--vcs` option for `new` and `init` commands** — introduced explicit version control system selection via `--vcs \<git|none>`.
* **Git metadata integration in `--version`** — the CLI now appends the current short commit hash and a `-dirty` suffix if there are uncommitted changes in the DCR repository.
* **Automatic `.gitignore` generation** — Git repository initialization now automatically writes a `.gitignore` file excluding the `/target` directory.
* **Nested repository prevention** — automatic Git initialization is now skipped if `dcr new` or `dcr init` is executed inside an already existing Git repository.
* **VCS verification tests** — added `new_vcs_options_work` and `init_vcs_options_work` integration tests to ensure reliable repository behavior.
### Changed
* **Complete removal of `git2` dependency** — all Git actions (dependency fetching, VCS setup, status checks) are now delegated to the system `git` executable via `Command`. This simplifies compilation and drops the need for `vendored` and `openssl` features.
* **Migrated from `reqwest` to `ureq`** — replaced the heavy `reqwest` crate in `flag_update.rs` with the lightweight synchronous `ureq 2.10` client, reducing overhead and the final binary size.
## 0.7.2 (2026-06-07)
### Added
* `default_target_triple()` now respects `target_env` — Linux (gnu/musl) and Windows (msvc/gnu) use the correct environment instead of hardcoded values.
### Исправлено
* **macOS Apple Silicon builds failed with `_main` undefined** — `--target=` is now passed to ldflags, not just cflags. `default_target_triple()` uses `std::env::consts::ARCH` on macOS instead of hardcoded `x86_64`.
* **GitHub Stars and GPL-3.0 badges not rendering in README** — badge block converted to pure HTML.
### Changed
* Default target resolution extracted into shared `default_target_triple()` — removed duplication across build, run, clean.
## 0.7.1 (02.06.2026)
### Added
* **`--help` для всех команд** — `dcr build --help`, `dcr run --help`, `dcr new --help`,
`dcr init --help`, `dcr clean --help`, `dcr add --help`, `dcr fmt --help`,
`dcr setup --help`, `dcr tree --help`, `dcr gen --help`, `dcr --update --help`,
`dcr test --help`. Во всех результатах вывода используются стилизованные заголовки (зелёного цвета) и строки с информацией об использовании (голубого цвета).
* **Справочные страницы** — 12 страниц в формате troff в каталоге `man/man1/`: `dcr.1`, `dcr-build.1`,
`dcr-run.1`, `dcr-new.1`, `dcr-init.1`, `dcr-clean.1`, `dcr-add.1`, `dcr-test.1`,
`dcr-gen.1`, `dcr-fmt.1`, `dcr-tree.1`, `dcr-setup.1`.
* **Справочные страницы во всех пакетах** — install.sh, install_bsd.sh, PKGBUILD из AUR,
Debian (cargo-deb), RPM (cargo-generate-rpm), Nix (postInstall), Homebrew
(ресурс), Snap, ресурсы релизов GitHub.
* **Проверка имени проекта** — команды `dcr init` и `dcr new` теперь проверяют имена перед созданием файлов
. Допускаются только буквы ASCII, цифры, символы `_` и `-`.
* **Поля `documentation` и `homepage`** — добавлены в файл `Cargo.toml`.
* **Оптимизации профиля релиза** — `opt-level = "z"`, LTO, `codegen-units = 1`,
`panic = "abort"`, `strip = true` для уменьшения размера бинарных файлов.
* **Платформы Linux i686, armv7, riscv64** — добавлены в рабочий процесс выпуска и скрипты установки.
* **Платформы Linux musl i686 и armv7** — скомпилированы с помощью zigbuild в системе непрерывной интеграции (CI).
* **Пакеты AUR** — рабочий процесс публикации `dcr-dev`, `dcr-dev-bin`.
* **Публикация Snap** — автоматическая публикация Snapcraft в рамках непрерывной интеграции (CI).
* **Значок Snap** — в файле README.
### Changed
* **`validate_package_name` стал общедоступным** — его можно вызывать из команд CLI.
* **Таблица платформы README** — реорганизована: варианты libc вынесены в отдельные строки по ОС,
удалены лишние столбцы. Обновлен список архитектур Linux.
* **Вывод `gen.rs` без аргументов** — теперь используется стилизованный вывод вместо необработанного `eprintln!`.
* **`tree.rs`, `fmt.rs` и `setup.rs`** — теперь поддерживают аргументы для опции `--help`.
* **Команды установки из файла README** — `| bash` → `| sh` для обеспечения совместимости с POSIX.
### Fixed
* **`dcr new \<invalid-name>` создает каталог, а затем завершается с ошибкой** — теперь проверка
выполняется до начала любых операций с файлами.
* **`dcr init` при указании недопустимого имени каталога** — то же исправление.
* **Отсутствующие справочные страницы в установленных пакетах** — теперь поставляются во всех форматах.
* **Ложное срабатывание по букве диска Windows** — в модуле анализа файлов зависимостей.
* **CRLF (`\r\n`) вызывает сбой в работе парсера зависимостей** — теперь поддерживается обработка смешанных символов окончания строк.
* **Новая строка после обратного слеша не обработана** — при обработке экранирующих символов в функции `parse_d_file`.
## 0.7.0 (01.06.2026)
### Added
* **Поддержка целевых платформ OpenBSD и NetBSD** — полная маршрутизация по платформам с динамически генерируемыми тройками целевых параметров с использованием `std::env::consts::ARCH` и `std::env::consts::OS`. Затрагивает команды `build`, `run`, `clean` и модуль платформы.
* **`src/platform/bsd.rs`** — новый специальный модуль платформы BSD, общий для FreeBSD, OpenBSD и NetBSD, предоставляющий `bin_path`, `lib_path`, `elf_path`, `efi_path` и `shared_lib_path`.
* **`Параметр конфигурации build.out_dir`** — настраиваемый каталог вывода, который переопределяет путь по умолчанию `target/\<triple>/\<profile>` для конечных артефактов. Поддерживается в `build`, `run` и при проверке конфигурации.
* **Команда `dcr fmt`** — новая команда CLI, которая форматирует все исходные файлы C/C++ (`*.c`, `*.cpp`, `*.h`, `*.hpp`) в `src/` и `tests/` с помощью `clang-format`.
* **Инкрементальная компоновка** — функция `needs_link()` в `common.rs`, которая проверяет, не является ли какой-либо объектный файл более новым, чем скомпонованный результат, пропуская ненужную повторную компоновку. Реализовано для всех бэкэндов (`unix_cc`, `msvc`, `gas`, `nasm`).
* **`build.kind = «none»` и `«custom»`** — два новых типа проектов для специальных сценариев сборки, при которых не создается стандартный артефакт.
* **`install_bsd.sh`** — специальный скрипт установки, совместимый с POSIX, для систем BSD (FreeBSD, OpenBSD, NetBSD) с режимами загрузки бинарных файлов и сборки из исходного кода.
* **Поддержка Linux ARM64 в `install.sh`** — добавлено определение целевой тройки `Linux:aarch64|Linux:arm64` для загрузки готовых бинарных файлов.
* **Обнаружение ОС BSD в `install.sh`** — обнаружение FreeBSD, OpenBSD, NetBSD и определение целевой тройки.
* **`rust-toolchain.toml`** — явное привязывание инструментария к каналу `stable`.
* **Интеграционные тесты** — `build_with_target_config` (проверяет `build.target = «linux»`) и `build_with_out_dir` (проверяет настраиваемый каталог вывода).
* **`get_build_string_with_profile` стал `pub`** — чтобы `run.rs` мог определять конфигурацию настраиваемого каталога вывода.
### Changed
* **Изменена семантика `build.target`** — теперь строго содержит тройку целей (например, `x86_64-unknown-linux-gnu`) или короткое имя (`linux`, `macos`, `windows`). Больше не используется в качестве пользовательского каталога вывода — эта функциональность перенесена в `build.out_dir`.
* **`build.standard` стал опциональным** — изменен с `String` на `Option\<String>`. Проверка обеспечивает только непустоту для языков, отличных от ASM. Пропускается в выводе `dcr.toml`, если пуст.
* **`dcr run` с `out_dir`** — теперь определяет целевой каталог с учетом `build.out_dir`, если он настроен, через `get_build_string_with_profile()` из `build.rs`.
* **`collect_sources()` возвращает пустой вектор** вместо ошибки, если не найдено ни одного исходного файла, что позволяет проектам с `kind = «none»` или `kind = «custom»` не иметь исходных файлов.
* **Рефакторинг рабочего процесса выпуска CI/CD** — `git2` стал целевым (без vendored-openssl на Windows), кросс-компиляция на основе Zig для целей Linux, отличных от x86_64, очистка версий пакетов Arch Linux (тире → точки), символьная ссылка `gmake` для NetBSD.
* **Таблица совместимости README** — статус сборки/работы на FreeBSD, OpenBSD, NetBSD повышен с «сообщество/по возможности» до «официально поддерживается».
* **Обновлена документация** — `build-section.md` описывает новые поля `build.target` и `build.out_dir`. `target-directory.md` переписан для уточнения различия.
### Fixed
* **stdout/stderr `dcr run` не наследуются** — вывод дочернего процесса захватывался и выводился вручную, что приводило к сбоям интерактивных программ. Исправлено путем перехода на `Command::status()`.
* **Условие гонки в CI релиза** — задания матрицы сборки могли загружать ресурсы в релиз, который еще не существовал. Исправлено добавлением специального задания `create-release`.
* **Релиз GHA — переопределение стабильного набора инструментов** — устранены проблемы с переопределением набора инструментов Rust в CI.
* **Очистка версий пакетов Arch Linux** — строки версий с дефисами (например, `0.7.0-dev`) являются недопустимыми для `pkgver` в Arch Linux. Исправлено путем замены дефисов точками.
* **Права доступа GPG после Docker** — операции Docker изменяли владельца каталога GPG. Исправлено путем запуска `chown` после команд Docker.
* **Пути к артефактам пакетов RPM** — артефакты RPM размещались в `rpm/x86_64/` вместо `fedora/x86_64/`. Исправлено в рабочем процессе Dexoron Packages Index.
* **Надежность разбора JSON в `install.sh`** — добавлен `jq` в качестве основного парсера с резервным вариантом `python3` для поиска релизов в канале dev.
### Удалено:
* **Вспомогательная функция `format_roots()`** — удалена из `common.rs`. Использовалась только старым путем обработки ошибок в `collect_sources()`.
* **Отдельные шаги загрузки артефактов для каждой дистрибуции** — три отдельных шага `actions/download-artifact` заменены на унифицированный `gh release download --clobber`.

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---
sidebar_label: Команды сборки (build, run, clean)
---
# Команды сборки
## `dcr build`
Собирает проект по `dcr.toml`.
```bash
dcr build # debug profile
dcr build --release # release build
dcr build --debug # explicit debug
dcr build --target aarch64-unknown-linux-gnu
dcr build --force # full rebuild (also re-runs build.steps / post_steps)
dcr build --clean # clean + build
dcr build --verbose # show compilation commands
dcr build --workspace pkg-a # build specific workspace package
```
Артефакты: `target/\<triple>/\<profile>/\<binary-name>` (Linux с явным целевым объектом).
With `[archive]` in `dcr.toml`, a FAT disk image is packed after a successful build.
## `dcr run`
Собирает (если исходники новее артефакта) и запускает бинарник.
```bash
dcr run
dcr run --release
dcr run --force # force rebuild then run
```
On a **workspace-only** root: if `[run].cmd` is set, that command is used after build; otherwise DCR delegates to a workspace member.
## `dcr clean`
Удаляет директорию `target/`(или `target/\<target>/\<profile>`).
```bash
dcr clean
dcr clean --release # очистить target/release/
dcr clean --target windows # очистить target/x86_64-pc-windows-msvc/
dcr clean --all # очистить все пакеты workspace
```

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---
sidebar_label: Команды зависимостей (add, tree)
---
# Команды зависимостей
## `dcr add \<name> [source]`
Добавляет зависимость в `dcr.toml`.
```bash
dcr add fmt # поиск в реестре
dcr add mylib ../path/to/lib # путь как источник
dcr add mylib path:./lib # явный префикс пути
dcr add mylib git:https://github.com/user/repo # явный префикс git
dcr add mylib github:user/repo # сокращённая запись GitHub
dcr add mylib gitlab:user/repo # сокращённая запись GitLab
```
Префиксы источника:
* `path:` — локальный путь
* `git:` — URL адрес git-репозитория
* `github:` — расширение `https://github.com/\<user>/\<repo>`
* `gitlab:` — расширение `https://gitlab.com/\<user>/\<repo>`
* `http://` / `https://` / `git@` — полный URL
Флаги:
* `--branch \<name>` — git ветка
* `--tag \<name>` — git tag
* `--rev \<hash>` — git commit
Если источник не указан — DCR выполняет поиск в подключенных реестрах. A bare relative or absolute path is accepted as a path dependency.
## `dcr tree`
Показывает дерево зависимостей проекта.
```bash
dcr tree
```
Пример вывода:
```
my-app v0.1.0
├── fmt (registry)
│ └── spdlog (registry)
└── catch2 (registry)
```
В случае path зависимостей, рекурсивно отображает их собственные зависимости (из файла `dcr.toml`).

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---
sidebar_label: Gen команды (vscode, clion, ...)
---
# Gen команды
## `dcr gen \<target>`
Генерирует файл интеграции с IDE.
### vscode
```bash
dcr gen vscode
```
Создаёт:
* `.vscode/tasks.json` — `build` задача (dcr build)
* `.vscode/launch.json` — конфигурация запуска отладки
* `.vscode/settings.json` — настройки C/C++ (clangd пути, includes)
* `.vscode/extensions.json` — рекомендуемые расширения (vscode-clangd, vscode-lldb)
### clion
```bash
dcr gen clion
```
Создаёт:
* `.idea/externalTools.xml` — внешние инструменты (build, run, clean, test)
* `.idea/customTargets.xml` — пользовательские цели сборки
* `.idea/misc.xml` — настройки C/C++ проекта
* `.idea/runConfigurations/\<name>.xml` — конфигурация запуска
### compile-commands
```bash
dcr gen compile-commands
```
Генерирует `compile_commands.json` — стандартный формат для clangd, cpptools, статических анализаторов.
### project-info
```bash
dcr gen project-info
```
Выводит JSON с метаданными проекта:
```json
[
{
"name": "my-app",
"version": "0.1.0",
"root": "/path/to/project",
"profile": "debug",
"language": "c",
"standard": "c17",
"cxx_standard": null,
"compiler": "/usr/bin/clang",
"kind": "bin",
"sources": ["src/main.c"],
"include_dirs": ["src"],
"lib_dirs": [],
"libs": [],
"cflags": ["-std=c17", "-O0", "-g"],
"ldflags": []
}
]
```

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---
sidebar_label: Команды проекта (new, init)
---
# Команды проекта
## `dcr new \<name>`
Создает новый проект со стандартной структурой и `dcr.toml`. Аргумент `name` является обязательным.
В названии проекта допускаются только ASCII буквы, цифры и подчеркивания `_` и дефисы `-`.
```bash
dcr new my-app
dcr new my-app --vcs none
```
Flags:
* `--vcs \<git|none>` — Initialize version control system (defaults to `git` if available, or `none`).
Генерирует:
* `dcr.toml` с базовыми полями
* `src/main.c` с основным шаблоном
## `dcr init`
Инициализирует проект DCR в текущем (пустом) каталоге.
```bash
dcr init
dcr init --vcs none
```
Flags:
* `--vcs \<git|none>` — Initialize version control system (defaults to `git` if available, or `none`).
Название проекта взято из имени текущего каталога. Имя каталога должно соответствовать тем же правилам именования, что и в `dcr new`.

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---
sidebar_label: Команды качества (test, fmt)
---
# Команды качества
## `dcr test`
Запускает тесты.
```bash
dcr test # debug профиль
dcr test --release # release профиль
dcr test --debug # явный debug
dcr test --help # подробная справка
```
Перед первым запуском нужно инициализировать тесты:
```bash
dcr test --init
```
Это создаёт `tests/dcr_test.h` (фреймворк) и `tests/test.c` (шаблон).
Что делает `dcr test`:
1. Собирает проект
2. Собирает файлы `tests/*.c` (только `.c`, не `.cpp`)
3. Компилирует и линкует каждый файл теста
4. Запускает каждый бинарник тестов
5. Вывод сводки: TOTAL, PASS, SKIP, FAIL
6. Возвращает ненулевой код при наличии FAIL
## `dcr fmt`
Форматирует исходный код C/C++ через `clang-format`.
```bash
dcr fmt
```
Процессы: `src/**/*.{c,cpp,cxx,cc,h,hpp,hxx,hh}` и `tests/**/*.{c,cpp,cxx,cc,h,hpp,hxx,hh}`.
Использует `.clang-format` в корне проекта (если таковой имеется), иначе стиль clang-format по умолчанию.
## `dcr lint`
Выполняет `clang-tidy` на C/C++ исходных файлах для статического анализа.
```bash
dcr lint # отобразить диагностику
dcr lint --fix # автоматически применить исправления
dcr lint --help # подробная справка
```
Процессы: `src/**/*.{c,cpp,cxx,cc}` и `tests/**/*.{c,cpp,cxx,cc}`.
Без параметра `--fix` clang-tidy выдает предупреждения и ошибки, не внося изменений в файлы.
При параметре `--fix` clang-tidy автоматически вносит предложения по исправлениям на месте.

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---
sidebar_label: Системные команды (setup, --help, ...)
---
# Системные команды
## `dcr setup`
`~/.dcr/config.toml` — конфигурация реестров
```bash
dcr setup
```
Если файл `~/.dcr/config.toml` не найден, DCR возвращает ошибку. Создайте его вручную:
```toml
[registry.default]
url = "https://index.dcr.pm"
priority = 1
```
## `dcr --help`
Отображает справку по всем командам.
```bash
dcr --help
```
## `dcr --version`
Отображает версию и целевую платформу.
```bash
dcr --version # dcr 0.7.0 (x86_64-unknown-linux-gnu)
```
## `dcr --update`
Автоматическое обновление. Загружает последнюю версию бинарного файла из раздела «Релизы» на GitHub и заменяет текущую версию.
```bash
dcr --update
```
Возможности:
* Определяет платформу и архитектуру автоматически
* Выдает предупреждение при установке через AUR (вместо этого используйте пакетный менеджер)
* Работает на Linux, macOS, Windows

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---
sidebar_label: Вклад
---
# Вклад
## Настройка
```bash
git clone https://github.com/dexoron/dcr
# or a source mirror: GitVerse / SourceCraft / SourceForge / GitLab (see README)
cd dcr
cargo build
```
## Стиль написания кода
Весь код форматируется через `cargo fmt`:
```bash
формат груза
```
## Линтер
```bash
cargo clippy --all-targets -- -D warnings
```
## Тесты
```bash
тест cargo --all-targets
```
## Процесс связей с общественностью
1. Форкните репозиторий
2. Создайте ветку: `git checkout -b feature/description`
3. Внесите изменения
4. Запустите `cargo fmt && cargo clippy --all-targets -- -D warnings && cargo test --all-targets`
5. Откройте Pull Request
## CI
CI runs (see `.github/workflows/ci.yml`):
* `cargo fmt --check`
* `cargo clippy` (default + `--all-features`)
* `cargo check --all-targets --all-features`
* Unit + integration tests on Linux, macOS, Windows
* Extra Linux job with `--features archive` (FAT images)
* Tools on runners: clang, nasm, clang-format/tidy (Linux)

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---
sidebar_label: Часто задаваемые вопросы
---
# Часто задаваемые вопросы
## Реестр не найден
```
Ошибка: реестр не найден
```
**Решение:** Убедитесь, что файл `~/.dcr/config.toml` существует:
```toml
[registry.default]
url = "https://index.dcr.pm"
priority = 1
```
Если реестр кастомный, проверьте `DCR_INDEX_PATH`:
```bash
echo $DCR_INDEX_PATH
```
## Компилятор не найден
```
Ошибка: компилятор не найден
```
**Решение:** Убедитесь, что компилятор установлен и доступен в PATH.
```bash
какой gcc
какой clang
```
Или укажите явно через `[toolchain]` или `DCR_COMPILER`.
## Ctrl+C во время сборки
DCR корректно обрабатывает SIGINT: прерывает текущую компиляцию и завершает процесс с ненулевым кодом.
## Как создать библиотеку?
[Library Recipe](/docs/recipes/library-project).
## Как выполнить кросс-компиляцию для Windows?
См. [Cross-Compile Recipe](/docs/recipes/cross-to-windows).
## Как сделать мультипакетный проект?
См. [Workspace Recipe](/docs/recipes/multi-package-workspace).
## Bootloader / pure NASM OS image
Use `kind = "flat-bin"` (NASM `-f bin`) and optional `[archive]` for a FAT disk image.
See [OS-dev recipe](/docs/recipes/os-flat-bin-archive).
## How do I choose a download mirror?
`dcrup install` uses `--mirror auto` by default and tries **cf → gh → sf → ya**.
```bash
dcrup install stable --mirror cf
export DCRUP_MIRROR=ya
```
## Lock-файл устарел
При изменении зависимостей `dcr.lock` автоматически обновляется при следующем `dcr add`. Если нужно принудительно обновить — удалите `dcr.lock` и выполните `dcr build`.

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---
sidebar_label: Первые шаги
---
# Первые шаги
## Создать проект
```bash
dcr new my-app
cd my-app
```
Будет создана структура:
```
my-app/
├── dcr.toml
└── src/
└── main.c
```
`dcr.toml`:
```toml
[package]
name = "my-app"
version = "0.1.0"
type = "none"
[build]
language = "c"
standard = "c11"
compiler = "clang"
kind = "bin"
```
## Сборка
```bash
dcr build
```
Результат — `target/\<triple>/debug/my-app` (Linux) или `target/debug/my-app.exe` (Windows).
Профиль сборки:
```bash
dcr build --release # release сборка
dcr build --debug # debug (по умолчанию)
```
## Запустить
```bash
dcr run
```
Собирает (если нужно) и запускает бинарник.
## Первый тест
```bash
dcr test --init # создать шаблон теста
dcr test # запустить тесты
```
## Форматирование
```bash
dcr fmt # clang-format по .clang-format
```
## Linting
```bash
dcr lint # clang-tidy checks
dcr lint --fix # apply fixes automatically
```

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---
sidebar_label: Установка
---
# Установка
## dcrup (recommended)
Install and switch DCR versions (stable / dev / night, pin `0.8.2`, optional build from source).
### Linux / macOS / BSD / Windows (bash)
```sh
curl -fsSL https://sh.dcr-tool.ru | sh -s -- self-install
export PATH="$HOME/.dcr/bin:$PATH"
dcrup install stable
```
Non-interactive install of DCR in one shot:
```sh
curl -fsSL https://sh.dcr-tool.ru | sh -s -- install stable
export PATH="$HOME/.dcr/bin:$PATH"
```
### Windows (PowerShell)
```powershell
irm https://ps1.dcr-tool.ru | iex
# or download then run:
# irm https://ps1.dcr-tool.ru -OutFile dcrup.ps1
# powershell -File .\dcrup.ps1 self-install
# $env:Path += ";$env:USERPROFILE\.dcr\bin"
dcrup install stable
```
Optional cmd bootstrap (if you prefer `curl` of the cmd shim):
```bat
curl -fsSL -o dcrup.cmd https://cmd.dcr-tool.ru
```
After `self-install`, the command is **`dcrup`** (no `.sh` / `.ps1`): shims live in `~/.dcr/bin` (Unix) or `%USERPROFILE%\.dcr\bin` (Windows `dcrup.cmd`).
### Common dcrup commands
```sh
dcrup install stable # latest stable prebuilt (auto: cf → gh → sf → ya)
dcrup install 0.8.2 # pin → 0.8.2@stable
dcrup install 0.8.2@dev
dcrup install stable --libc musl # Linux: musl asset (default: gnu)
dcrup install stable --mirror cf # CloudFlare CDN
dcrup install stable --mirror ya # Yandex CDN (RU fallback)
dcrup install stable --build # cargo build --features archive
dcrup install night # always build from branch dev HEAD
dcrup default 0.8.2
dcrup update
dcrup list
dcrup show
dcrup which
```
Layout: `~/.dcr/toolchains/\<id>/dcr` and `~/.dcr/bin/dcr` → active version.
### Download mirrors
Prebuilt installs try **cf → gh → sf → ya** unless you pin a host.
| Code | URL | Notes |
| ---- | ------------------------------------------------------------------------------------------------------------ | -------------------------- |
| `cf` | `https://cdn-global.dcr-tool.ru/\<tag>/\<asset>` | CloudFlare CDN (worldwide) |
| `gh` | `https://github.com/dexoron/dcr/releases/download/\<tag>/\<asset>` | GitHub Releases |
| `sf` | `https://sourceforge.net/projects/dcr-tool/files/\<tag>/\<asset>/download` | SourceForge |
| `ya` | `https://cdn-ru.dcr-tool.ru/\<tag>/\<asset>` | Yandex CDN (RU fallback) |
```sh
dcrup install stable --mirror auto # default
export DCRUP_MIRROR=cf # persist for this shell
```
---
## Arch Linux (AUR)
```sh
ура -S dcr
```
## macOS / Linux (Homebrew)
```sh
brew tap dexoron/dexoron
brew install dcr
```
## Snap (Linux)
```sh
sudo snap install dcrup
```
> If classic Snap Store publishing is unavailable, install the `.snap` from [GitHub Releases](https://github.com/dexoron/dcr/releases/latest) with `--dangerous`.
## Nix (flake)
```sh
nix run github:dexoron/dcr
nix profile install github:dexoron/dcr
```
## Cargo (crates.io)
```sh
cargo install dcr
```
Note: crates.io builds may omit optional features. For FAT disk images (`[archive]`), prefer release binaries or:
```sh
cargo install dcr --features archive
```
## Из источника
```sh
git clone https://github.com/dexoron/dcr.git
cd dcr
cargo build --release --features archive
ln -sf "$PWD/target/release/dcr" ~/.local/bin/dcr
# or manage versions with dcrup install night / --build
```
## После установки
```bash
dcr --version
dcrup show # if installed via dcrup
```
Man pages (package installs / release assets):
```bash
man dcr
man dcr-build
```
Registry (optional) — `~/.dcr/config.toml`:
```toml
[registry.default]
url = "https://index.dcr.pm"
priority = 1
```

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---
sidebar_label: Интеграция с IDE
---
# Интеграция с IDE
## VS Code
Install the recommended [DCR extension by Dexoron-Labs](https://marketplace.visualstudio.com/items?itemName=Dexoron-Labs.dcr). Do not install Microsoft C/C++ extensions for DCR projects: DCR uses `clangd`. MS C/C++ is acceptable only when you need its debugger.
Recommended companion extensions:
* [Even Better TOML](https://marketplace.visualstudio.com/items?itemName=tamasfe.even-better-toml)
* [CodeLLDB](https://marketplace.visualstudio.com/items?itemName=vadimcn.vscode-lldb), or MS C/C++ for debugger support only
```bash
dcr gen vscode
```
Генерирует в `.vscode/`:
| Файл | Назначение |
| ----------------- | ------------------------------------------- |
| `tasks.json` | Задача `build` (dcr build) |
| `launch.json` | Debug-запуск бинарника |
| `settings.json` | clangd/IntelliSense: include пути, стандарт |
| `extensions.json` | Рекомендует clangd, C/C++ |
## CLion
```bash
dcr gen clion
```
Генерирует в `.idea/`:
| Файл | Назначение |
| ----------------------------------------- | ------------------------------------------------ |
| `externalTools.xml` | Build, Run, Clean, Test как внешние инструменты |
| `customTargets.xml` | Кастомные цели сборки |
| `misc.xml` | Настройки C/C++ проекта |
| `runConfigurations/dcr_build_and_run.xml` | Конфигурации запуска для каждого бинарного файла |
## compile_commands.json
```bash
dcr gen команды компиляции
```
Генерирует `compile_commands.json` в корне проекта. Стандартный формат для:
## информация о проекте
```bash
dcr gen info-проекта
```
Выводит JSON с метаданными проекта (см. [gen-commands](/docs/commands/gen-commands)).

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---
sidebar_label: Лицензия
---
# Лицензия
## DCR
DCR распространяется под лицензией [GPL-3.0-or-later](https://spdx.org/licenses/GPL-3.0-or-later.html).
> **Важно:** DCR — инструмент сборки, а не библиотека. GPL распространяется только на исходный код самого DCR. Проекты, собранные с помощью DCR, не подпадают под лицензию DCR — их лицензирование определяется исключительно их собственным кодом и зависимостями.
## Rust-зависимости
DCR написан на Rust. Ниже перечислены основные статически связываемые крейты:
| Крейт | Лицензия |
| ------------------------------------------------------- | ------------------ |
| [`ureq`](https://crates.io/crates/ureq) | MIT ИЛИ Apache-2.0 |
| [`serde`](https://crates.io/crates/serde) | MIT ИЛИ Apache-2.0 |
| [`toml`](https://crates.io/crates/toml) | MIT ИЛИ Apache-2.0 |
| [`toml_edit`](https://crates.io/crates/toml_edit) | MIT OR Apache-2.0 |
| [`serde_json`](https://crates.io/crates/serde_json) | MIT ИЛИ Apache-2.0 |
| [`sha2`](https://crates.io/crates/sha2) | MIT ИЛИ Apache-2.0 |
| [`glob`](https://crates.io/crates/glob) | MIT ИЛИ Apache-2.0 |
| [`self-replace`](https://crates.io/crates/self-replace) | MIT ИЛИ Apache-2.0 |
| [`ctrlc`](https://crates.io/crates/ctrlc) | MIT ИЛИ Apache-2.0 |
Full dependency tree is available in [`Cargo.lock`](https://github.com/dexoron/dcr/blob/main/Cargo.lock). Подавляющее большинство имеют двойную лицензию MIT OR Apache-2.0.
## Дополнительные благодарности
* Дизайн CLI и модель проектов DCR вдохновлены [Cargo](https://doc.rust-lang.org/cargo/).

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---
sidebar_label: Кросс-компиляция для Windows
---
# Кросс-компиляция для Windows на Linux
Сборка Windows-бинаря на Linux с использованием mingw-w64.
## Установка toolchain
```bash
# Ubuntu/Debian
sudo apt install mingw-w64
# Fedora
sudo dnf install mingw64-gcc mingw64-binutils
```
## Конфигурация
```toml
[package]
name = "my-app"
version = "0.1.0"
type = "app"
[build]
language = "c"
standard = "c17"
target = "windows"
```
## Сборка
```bash
dcr build --target windows --release
```
Артефакт: `target/x86_64-pc-windows-gnu/release/my-app.exe`.
## Кастомный toolchain (опционально)
```toml
[toolchain]
cc = "x86_64-w64-mingw32-gcc"
cxx = "x86_64-w64-mingw32-g++"
```

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---
sidebar_label: Проект библиотеки
---
# Проект библиотеки
Создание статической библиотеки и её использование в другом проекте.
## Шаг 1: Создать библиотеку
```bash
dcr new my-lib
```
`dcr.toml`:
```toml
[package]
name = "my-lib"
version = "0.1.0"
type = "lib"
[build]
language = "c"
standard = "c17"
kind = "staticlib"
```
`src/my_lib.h`:
```c
#ifndef MY_LIB_H
#define MY_LIB_H
int add(int a, int b);
#endif
```
`src/my_lib.c`:
```c
#include "my_lib.h"
int add(int a, int b) { return a + b; }
```
## Шаг 2: Собрать
```bash
cd my-lib
dcr build --release
```
Артефакты:
* `target/release/libmy-lib.a` (Linux/macOS)
* `target/release/my-lib.lib` (Windows)
* `target/include/` — заголовочные файлы
## Шаг 3: Использовать в проекте
```bash
dcr new my-app
cd my-app
dcr add ../my-lib
```
Автоматически:
* Добавляется include path на `target/include/` библиотеки
* Добавляется lib path на `target/release/`
* Линкуется `libmy-lib.a` / `my-lib.lib`

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---
sidebar_label: Рабочая область с несколькими пакетами
---
# Рабочая область с несколькими пакетами
Проект из трёх пакетов: библиотека, утилита и основной бинарник.
## Структура
```
workspace/
├── dcr.toml # корневой workspace
├── lib-core/
│ ├── dcr.toml
│ └── src/lib.rs
├── lib-utils/
│ ├── dcr.toml
│ └── src/utils.c
└── app/
├── dcr.toml
└── src/main.c
```
## Корневой dcr.toml
```toml
[package]
name = "my-workspace"
version = "0.1.0"
type = "none"
[build]
inherit = true
language = "c"
standard = "c11"
workspace_only = true
[workspace.lib-core]
path = "lib-core"
[workspace.lib-utils]
path = "lib-utils"
deps = ["lib-core"]
[workspace.app]
path = "app"
deps = ["lib-core", "lib-utils"]
main = true
```
## Пакеты
`lib-core/dcr.toml`:
```toml
[package]
name = "lib-core"
version = "0.1.0"
type = "lib"
[build]
kind = "staticlib"
```
`lib-utils/dcr.toml`:
```toml
[package]
name = "lib-utils"
version = "0.1.0"
type = "lib"
[build]
kind = "staticlib"
```
`app/dcr.toml`:
```toml
[package]
name = "app"
version = "0.1.0"
type = "app"
[build]
kind = "bin"
```
## Сборка
```bash
cd workspace
dcr build # собирает всё в правильном порядке
dcr build --workspace app # только app (lib-core и lib-utils собираются как зависимости)
dcr run # собирает и запускает main-пакет
```
Порядок сборки (топологическая сортировка):
1. `lib-core`
2. `lib-utils` (зависит от lib-core)
3. `app` (зависит от lib-core, lib-utils)

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---
sidebar_label: OS-dev (flat-bin + archive)
---
# Pure ASM / boot image (flat-bin + archive)
Minimal OS-dev style pipeline: assemble raw binaries with NASM, then pack a FAT floppy/image with an optional boot sector.
## Project layout
```
myos/
dcr.toml
src/
boot.asm # boot sector (512 bytes)
kernel.asm # payload
```
For multiple flat artifacts, use a **workspace** (one member per binary) or separate packages; a single `flat-bin` package produces one binary per source stem.
## Boot package (`flat-bin`)
```toml
[package]
name = "boot"
version = "0.1.0"
[build]
language = "asm"
compiler = "nasm"
kind = "flat-bin"
extension = "bin"
roots = ["src/boot.asm"]
```
```bash
dcr build
# → target/<…>/debug/boot.bin (NASM -f bin, no link)
```
## Disk image after build
```toml
[archive]
output = "target/{profile}/disk.img"
format = "fat12"
size = "1440K"
label = "MYOS"
bootsector = "target/{profile}/boot.bin"
[[archive.layout]]
from = "target/{profile}/kernel.bin"
to = "KERNEL.BIN"
```
* `format`: `fat12`, `fat16`, or `fat32`
* `size`: bytes or `K`/`KB`/`M`/`MB`/`G`/`GB` (default ~1.44 MiB)
* `bootsector`: written only when `offset` is omitted or `0`
* `from` may be a glob; `{profile}` is substituted in paths
## C kernel → flat binary
```toml
[build]
language = "c"
compiler = "clang"
kind = "flat-bin"
freestanding = true
filename = "kernel"
extension = "bin"
ldflags = ["-T", "linker.ld"]
```
Pipeline: objects → temporary linked ELF → `objcopy -O binary` → `kernel.bin`. Requires `objcopy` / `llvm-objcopy` in PATH.
## Other assemblers
| Tool | Notes |
| -------- | --------------------------------------------------------------------------------------- |
| **FASM** | Write `format binary` in the source; DCR writes `\<stem>.bin` directly |
| **GAS** | Assemble `.s` → obj → `objcopy -O binary` |
| **LLC** | `language = "llvm_ir"` → obj → objcopy |
| **MASM** | COFF obj → objcopy (needs binutils/LLVM objcopy) |
## Notes
* Single-file `roots` are supported: `roots = ["src/boot.asm"]`.
* `--force` re-runs `build.steps` / `build.post_steps` as well as recompilation.
* Prefer `kind = "elf"` if you need a relocatable ELF kernel without stripping to raw binary.

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---
sidebar_label: dcr build --profile lto
---
# Встроенные профили
Профили позволяют переопределять любые поля секции `[build]` для конкретного режима сборки.
## Конфигурация
```toml
[build]
language = "c"
standard = "c17"
cflags = ["-Wall"]
[build.debug]
cflags = ["-O0", "-g"]
[build.release]
cflags = ["-O3", "-flto"]
```
## Правила
Поля из `[build.\<profile>]` **мержатся поверх** `[build]`
* **Скалярные поля** (строки, числа, логические значения) — заменены
* Массивы (`cflags`, `ldflags`, ...) **заменяются полностью**, а не дополняются
Установите `inherit = false`, чтобы отключить наследование массивов (будут использоваться только собственные массивы профиля).
## Кастомные профили
Флаги по умолчанию для каждого профиля формируются из трёх полей конфигурации:
| Поле | Default cflags | Профили сборки |
| ---------------- | ------------------ | -------------- |
| `opt_level` | `-O0 -g` | `"3"` |
| `debug` | `true` | `false` |
| `предупреждения` | `["all", "extra"]` | `[]` |
Которые генерируют соответствующие флаги компилятора:
| Профиль | Действующие флаги |
| ------- | ---------------------------------------------------------- |
| `debug` | `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDCR_DEBUG` |
| `релиз` | `-O3 -DNDEBUG` |
Дополнительные параметры сборки можно включать или отключать для каждого профиля:
```toml
[build.release]
opt_level = "z"
lto = true
strip = true
panic = "abort"
codegen-units = "1"
[build.debug]
opt_level = "1"
debug = false
warnings = ["all", "error"]
```
## Target-specific профили
```toml
[build.linux]
cflags = ["-DLINUX"]
[build.windows.debug]
cflags = ["-DWIN32", "-O0", "-g"]
```
Порядок применения (в порядке убывания приоритета):
1. `[build.\<target>.\<profile>]`
2. `[build.\<profile>.\<target>]`
3. ]`или`[build.\<target>]\`
4. `[build.\<profile>]`.
5. `[build]`

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---
sidebar_label: Система сборки
---
# Система сборки
## Бэкенды компилятора
DCR поддерживает 4 бэкенда компиляции. Выбор происходит автоматически на основе расширения файла и target triple.
| Бэкенд | Файлы | Когда используется |
| --------- | --------------------------------------- | ------------------------------------- |
| `unix_cc` | `.c`, `.cpp`, `.cxx`, `.cc`, `.s`, `.S` | gcc/clang на Linux/macOS/BSD |
| `msvc` | `.c`, `.cpp`, `.cxx`, `.cc` | Windows (cl, clang-cl) |
| `газ` | `.s`, `.S` | ARM/ARM64 ассемблер |
| `nasm` | `.asm`, `.s` | x86/x86_64 ассемблер |
| `masm` | `.asm` | MASM (ml/ml64) в Windows |
| `fasm` | `.asm`, `.fasm` | Сборщик плоских деталей |
| `llvm_ir` | `.ll` | LLVM IR с помощью `llc -filetype=obj` |
## Поддержка Qt
DCR обеспечивает встроенную поддержку Qt для автоматической обработки метаобъектов (MOC, UIC, RCC).
Чтобы включить эту функцию, установите значение `build.qt = true` в файле `dcr.toml`. DCR автоматически обнаружит файлы, связанные с Qt (`.ui`, `.qrc`, `.h` с `Q_OBJECT`), и обработает их.
```toml
[build]
qt = true
```
*Примечание: Требуется установка модулей `qt6` (Core, Widgets, Gui, Svg) с помощью `pkg-config`.*
Если требуется специальная обработка, по-прежнему можно выполнить расширенную настройку с помощью файла `build.steps`:
```toml
[build.steps]
moc = "moc {in} -o {out}"
```
### Unix CC
* Компилятор определяется через `resolve_compiler()`: CC/CXX из [toolchain], DCR_COMPILER/env, PATH
* Поддерживает генерацию `.d` файлов для header dependency tracking
* Флаги: `-std=`, `-MMD -MF`, `-c -o`, `-I`, `-L`, `-l`
* Условные флаги, зависящие от настроек:
* `freestanding` или целевая среда «bare-metal»: `-ffreestanding` (компиляция), `-nostdlib -static` (линковка)
* `lto`: `-flto` (компиляция + линковка)
* `panic = "abort"`: `-fno-exceptions` (только для C++), `-fno-unwind-tables`, `-fno-asynchronous-unwind-tables`
### MSVC
* Поддерживает cl.exe и clang-cl.exe
* Флаги: `/std:`, `/Fo:`, `/Fe:`, `/I`, `/link`
### GAS / NASM
* GAS: `-I`, `-c -o`, `--defsym`
* NASM: `-I`, `-o`, `-D`, `-f` (format: win64/elf64/macho64/macho32/elf32; **`bin` when `kind = "flat-bin"`**)
* MASM: `/nologo /c /Fo\<obj> <source>`
* FASM: `<source> \<output>` (путь вывода — объектный файл)
* LLVM IR: `-filetype=obj <source> -o \<output>`
## Инкрементные сборки
Три уровня инкрементальности:
1. **mtime** — если выходной файл новее всех входных, файл не перекомпилируется
2. **`.d` files** — отслеживание изменений в заголовочных файлах (включая транзитивные)
3. **SHA256 fingerprint** — если флаги компиляции изменились, файл перекомпилируется (fingerprint хранится в `.dcr_fingerprint`)
## Параллельная компиляция
* Используется `thread::scope` для создания пула потоков
* Атомарная очередь задач (`AtomicU64`)
* Мьютекс на запись в stdout (`OUTPUT_MUTEX`)
* Количество потоков = `available_parallelism()`, ограниченное значением `build.codegen-units`, если оно задано
## Типы сборок
| Тип | Тип | Путь (пример для Linux) |
| ------------------ | ------------------------------------ | --------------------------------------------------------------------------------------------------------------------------------------------- |
| `bin` | Исполняемый файл | `target/\<profile>/\<name>` (.exe) |
| `staticlib` | Статическая библиотека | `target/\<profile>/lib\<name>.a` (.lib) |
| `sharedlib` | Динамическая библиотека | `target/\<profile>/lib\<name>.so` (.dll/.dylib) |
| `efi` | UEFI приложение | `target/\<profile>/\<name>.efi` |
| `эльф` | ELF без стандартной библиотеки | `target/\<profile>/\<name>` |
| `нет` | Только компиляция, без линковки | — |
| `пользовательский` | Полный контроль filename + extension | `target/\<profile>/\<filename>.\<extension>` |
| `flat-bin` | Raw binary | ASM: `\<stem>.bin` (NASM `-f bin` / FASM / GAS·MASM·LLC via objcopy); C/C++: `\<name>.bin` (link + objcopy) |
## Disk images (`[archive]`)
After a successful build, if `[archive]` is present in `dcr.toml`, DCR formats a FAT volume and copies files from `layout` into the image. See [dcr.toml → archive](/docs/reference/dcr-toml#archive).
## Этапы сборки
DCR поддерживает pre-build и post-build шаги через Qt codegen:
* `build.steps` — команды, выполняемые перед компиляцией
* `build.post_steps` — команды, выполняемые после компиляции
Подстановки: `{stem}`, `{in}`, `{out}`.
`rcc` — Resource Compiler: `{stem}.qrc → qrc_{stem}.cpp`
```toml
[build.steps]
moc = "moc {in} -o {out}"
```
## pkg-config
Автоматический поиск (чтение из исходного файла конфигурации):
```toml
[build]
pkg_config = ["sdl2", "gl"]
```
DCR вызывает `pkg-config --cflags sdl2 gl` и `pkg-config --libs sdl2 gl` и добавляет результат в флаги компиляции/линковки.
## Подстановка переменных
Поддерживаемые переменные:
| Переменная | Описание |
| ----------------------- | ----------------------------------------- |
| `{version}` | Версия пакета |
| `{version_major}` | Часть, обозначающая основную версию |
| `{version_minor}` | Часть, обозначающая второстепенную версию |
| `{version_patch}` | Переменная |
| `{version_suffix}` | Суффикс (например, `-rc1`) |
| `{version_suffix_dash}` | Суффикс с тире |
| `{profile}` | Имя профиля (debug/release/...) |
| `{name}` | Имя пакета |

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---
sidebar_label: Кросс-компиляция
---
# Кросс-компиляция
## Сокращённые названия
DCR поддерживает короткие имена платформ, которые автоматически раскрываются в полные triples:
| Краткое название | Полный тройной |
| ---------------- | -------------------------- |
| `linux` | `x86_64-unknown-linux-gnu` |
| `macos` | `x86_64-apple-darwin` |
| `windows` | `x86_64-pc-windows-msvc` |
```bash
dcr build --target windows
```
## Полные тройки
```bash
dcr build --target aarch64-unknown-linux-gnu
dcr build --target x86_64-pc-windows-gnu
dcr build --target armv7-unknown-linux-gnueabihf
```
## clang --target
При использовании clang DCR автоматически inject-ит `--target=\<triple>` в CFLAGS/CXXFLAGS.
```toml
[build]
compiler = "clang"
target = "aarch64-unknown-linux-gnu"
# Авто: cflags = ["--target=aarch64-unknown-linux-gnu"]
```
## Bare-Metal
Для целевых платформ, содержащих значения `none`, `-elf`, `eabi` или `baremetal`, DCR автоматически:
1. Для none/elf/eabi/bare-metal target-ов отключаются DCR default флаги (нет `-I` системных путей, нет `-l` libc).
2. **Вставляет `-ffreestanding`** на этапе компиляции и `-nostdlib -static` на этапе линковки
Кроме того, можно явно включить автономный режим:
```toml
[build]
freestanding = true
```
```bash
dcr build --target aarch64-none-elf
```
## Целевой каталог
By default, the compilation output directories are structured as follows:
* **Linux and BSD**: Always output to `target/\<triple>/\<profile>/` (using host triple if no target is specified).
* **macOS and Windows (without target)**: Output to `target/\<profile>/`.
* **macOS and Windows (with explicit target)**: Output to `target/\<triple>/\<profile>/`.

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sidebar_label: Обзор dcr.toml
---
# Обзор dcr.toml
Основной конфигурационный файл проекта. Располагается в корне проекта.
## Структура
```toml
[package]
# required fields
[build]
# build settings
[build.debug] # optional: debug override
[build.release] # optional: release override
[build.linux] # optional: Linux override
[build.windows] # optional: Windows override
[build.windows.debug] # target + profile combination
[toolchain]
# compiler/linker paths
[dependencies]
# project dependencies
[workspace]
# multi-package configuration
[run]
# run settings
[archive]
# optional: pack FAT disk image after build
```
## [пакет]
| Поле | Обязательное | Описание |
| ------------- | ------------ | --------------------------------------------------------------------------------------------------------------- |
| `имя` | да | Имя проекта |
| `версия` | да | Semantic version of the **project** |
| `dcr-version` | no | Semver of the **dcr tool** this project targets. Written by `dcr new` / `dcr init` to the current tool version. |
| `тип` | нет | `app`, `lib`, `none` (defaults to `"none"`) |
| `лицензия` | нет | SPDX-идентификатор лицензии |
| `автор` | no | Автор |
```toml
[package]
name = "my-app"
version = "0.1.0"
dcr-version = "0.8.4"
type = "app"
license = "MIT"
author = "John Doe"
```
### `package.dcr-version`
Optional pin of the DCR CLI the project was written for. On every `dcr.toml` load:
| Situation | Behaviour |
| ------------------------------ | ---------------------------------------------------------- |
| Field missing / empty | Warning: add `dcr-version` (set by `dcr new` / `dcr init`) |
| Running dcr **older** than pin | Warning: upgrade dcr (`dcr --update`) |
| Running dcr **newer** than pin | Warning: review changelog, bump the pin when ready |
| Equal | Silent |
| Invalid semver | Warning once, field ignored |
Never fails the command — warnings only. Pre-release suffixes (`1.0.0-dev`) are ignored for comparison (`1.0.0-dev` ≡ `1.0.0`).
## [сборка]
...
* `build.qt` — (bool) Включить автоматическую обработку метаобъектов Qt (MOC, UIC, RCC). Требуется установка модулей `qt6` с помощью `pkg-config`.
| Поле | По умолчанию | Описание |
| ------------------------ | ------------- | --------------------------------------------------------------------------------------------------------- |
| `язык` | `"c"` | `"c"`, `"c++"`, `"cpp"`, `"cxx"`, `"asm"`, `"llvm_ir"`, `"llvm-ir"`, `"ll"` (optional, defaults to `"c"`) |
| `стандартный` | `"c11"` | Стандарт C (`c11`, `c17`, `c23`) |
| `cxx_standard` | — | Стандарт C++ (`c++17`, `c++20`, `c++23`) |
| `компилятор` | `cxxflags` | Preferred compiler (optional, defaults to `"clang"`) |
| `тип` | `"bin"` | `bin`, `staticlib`, `sharedlib`, `efi`, `elf`, `none`, `custom`, `flat-bin` |
| `target` | хост | Target triple для кросс-компиляции |
| `платформа` | `"нативный"` | `native`, `efi`, `freestanding` |
| `cflags` | `[]` | Дополнительные флаги C++ |
| `ldflags` | `[]` | Дополнительные флаги линковки |
| `имя файла` | `""` | Кастомное имя выходного файла |
| `расширение` | `""` | Custom file extension (for `flat-bin`, default is `bin`) |
| `корни` | `["src"]` | Source roots: directories and/or individual source/header files |
| `exclude` | `[]` | Паттерны исключений |
| `include` | `[]` | Дополнительные include-директории |
| `src_disable` | `false` | Отключить автоматический поиск источников |
| `наследовать` | `false` | Наследовать build от корня workspace |
| `clean` | `[]` | Шаблоны Glob для настраиваемых чистых путей |
| `out_dir` | `""` | Пользовательский каталог для вывода данных |
| `только рабочая область` | `false` | Workspace-only, not built standalone (no `language`/`compiler` required) |
| `отдельно стоящий` | `false` | Компилировать в автономном режиме (`-ffreestanding` + `-nostdlib -static`) |
| `opt_level` | — | Optimization level: `0`-`3`, `"s"`, `"z"` (derived from profile if omitted) |
| `ldscript` | profile-based | Emit debug symbols (`-g`): `true` in debug, `false` in release |
| `lto` | `false` | Оптимизация на этапе компоновки (`-flto` как для компилятора, так и для компоновщика) |
| `asflags` | `false` | Удалить символы из вывода (опция `-s` в ldflags) |
| `true` | `[]` | Warning flags (e.g. `"all"`, `"extra"`, `"pedantic"`); engine adds `-Wall -Wextra` in debug if empty |
| `panic` | `""` | Стратегия «Паника»: `"abort"` отключает исключения и таблицы развертки |
| `codegen-units` | `""` | Максимальное количество параллельных заданий компиляции (`"0"` = автоматически) |
| `qt` | `false` | Включить автоматическую обработку метаобъектов Qt (MOC, UIC, RCC) |
Параметры из исходного файла конфигурации (не в виде типизированной структуры):
* Пакеты для pkg-config
* Путь к linker script
* `build.steps` / `build.post_steps` — этапы генерации кода
## Per-language overrides: `[build.c]`, `[build.cxx]`, `[build.asm]`, `[build.llvm_ir]`
Each language can have its own table that overrides the flat `[build]` settings:
```toml
[build]
compiler = "clang"
standard = "c11"
[build.c]
standard = "c23"
compiler = "gcc"
[build.cxx]
standard = "c++23"
compiler = "g++"
[build.asm]
compiler = "nasm"
flags = ["-felf64"]
[build.llvm_ir]
compiler = "llc"
```
The flat `[build]` acts as fallback; per-language tables take precedence for their language.
Пример:
```toml
[build]
language = ["cpp", "c"]
standard = "c17"
standard = "c23"
cxx_standard = "c++23"
compiler = "clang"
kind = "sharedlib"
cflags = ["-Wall", "-Wextra"]
pkg_config = ["sdl2", "gl"]
```
## [набор инструментов]
```toml
[toolchain]
cc = "/usr/bin/clang"
cxx = "/usr/bin/clang++"
as = "/usr/bin/as"
ar = "/usr/bin/ar"
ld = "/usr/bin/ld.lld"
uic = "/usr/bin/uic" # Qt
moc = "/usr/bin/moc" # Qt
rcc = "/usr/bin/rcc" # Qt
```
Raw config также поддерживает `uic`, `moc` и `rcc` для генерации кода Qt.
## [зависимости]
См. [dependencies](/docs/reference/dependencies).
## [запустить]
```toml
[запустить]
cmd = "./target/{profile}/{name}"
```
Подстановки:
* `{version}` — версия из [package]
* `pkg_config`
* `{profile}` — отладочная / релизная версия
* `{name}` — имя из [package]
По умолчанию `cmd` вычисляется как `./target/{profile}/{name}`.
## [рабочая область]
См. [workspaces](/docs/reference/workspaces).
## [archive]
Optional post-build step: format a FAT volume and copy built artifacts into a disk image. Runs after a successful package build (and after workspace member builds that define `[archive]`).
Requires DCR built with the `archive` Cargo feature (`cargo build --features archive`). Release binaries include this feature.
| Field | Required | Description |
| ------------ | -------- | ------------------------------------------------------------------------------------------- |
| `output` | yes | Image path relative to project root (`{profile}` allowed) |
| `format` | yes | `fat12`, `fat16`, or `fat32` |
| `size` | no | Image size: bytes or `K`/`KB`/`M`/`MB`/`G`/`GB` (default `1474560` ≈ 1.44 MiB) |
| `offset` | no | Byte offset of the FAT volume inside the image (default `0`) |
| `label` | no | Volume label (max 11 chars, default `VOLUME`) |
| `bootsector` | no | Path to a 512-byte boot sector written at offset 0 when `offset` is 0 (`{profile}` allowed) |
| `layout` | no | List of `{ from, to }` entries (files or globs → path inside the volume) |
```toml
[archive]
output = "target/{profile}/disk.img"
format = "fat12"
size = "1440K"
label = "MYOS"
bootsector = "target/{profile}/boot.bin"
[[archive.layout]]
from = "target/{profile}/kernel.bin"
to = "KERNEL.BIN"
[[archive.layout]]
from = "assets/*"
to = "/"
```
Typical pairing with `kind = "flat-bin"` (NASM `-f bin`) for bootloaders and pure-ASM OS images.
## `flat-bin` (kind)
Produces a raw binary (default extension `bin`) for boot sectors, kernels, and freestanding payloads.
### Assemblers
| Tool | Language / compiler | How flat-bin is produced |
| ---- | ------------------------------------------ | -------------------------------------------- |
| NASM | `language = "asm"`, `compiler = "nasm"` | `-f bin` → `\<stem>.bin` |
| FASM | `compiler = "fasm"` | direct write (use `format binary` in source) |
| GAS | `compiler = "as"` / `"gas"` | assemble → `objcopy -O binary` |
| MASM | `compiler = "ml"` / `"ml64"` | assemble → `objcopy -O binary` |
| LLC | `language = "llvm_ir"`, `compiler = "llc"` | `-filetype=obj` → `objcopy -O binary` |
```toml
[build]
language = "asm"
compiler = "nasm"
kind = "flat-bin"
extension = "bin"
roots = ["src/boot.asm"]
```
### C / C++
Compile all sources, link with `-nostdlib -static` (plus your `ldflags` / `ldscript`), then convert the intermediate ELF/PE with `objcopy -O binary` to `\<filename|name>.bin`.
```toml
[build]
language = "c"
compiler = "clang"
kind = "flat-bin"
freestanding = true
filename = "kernel"
extension = "bin"
ldscript = "linker.ld"
ldflags = ["-T", "linker.ld"]
```
Notes:
* Multi-file **ASM** packages emit one `\<stem>.bin` per source; **C/C++** emit a single project binary.
* `objcopy` tools tried in order: `llvm-objcopy`, `objcopy`, `gobjcopy`.
* Incompatible with `build.qt = true`.
* `dcr run` rejects `flat-bin` (not a host executable).

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sidebar_label: Зависимости
---
# Зависимости
## Форматы
В секции `[dependencies]` поддерживаются три формата:
### Строка (реестр)
```toml
[dependencies]
fmt = "10.1.1"
spdlog = "^1.12"
catch2 = ">=3.0,<4.0"
```
Строка версии используется без изменений для поиска в реестре.
### Табличный (git)
```toml
[dependencies]
dcr-math = { git = "https://github.com/dexoron/dcr-math-lib.git", tag = "v0.1.0" }
```
Fields: `git`, `branch`, `tag`, `rev`, `mode`, `include`, `lib`, `libs`.
### Табличный (path)
```toml
[dependencies]
mylib = { path = "../mylib" }
```
For a prebuilt external library, specify its layout explicitly. The three
arrays are paths relative to the dependency root (`include`, `lib`) and linker
names (`libs`):
```toml
[dependencies]
dcr-math = { path = "../deps/dcr-math", include = ["include"], lib = ["lib"], libs = ["dcr-math"] }
```
## Реестр
## RegistryDCR использует реестр пакетов для поиска зависимостей по имени.```toml
# ~/.dcr/config.toml
[registry]
main = { url = "https://github.com/dcr-ports/dcr-index", priority = 1 }
```
```toml
# ~/.dcr/config.toml
[registry.default]
url = "https://index.dcr.dexoron.tech"
priority = 1
```
Приоритет реестра: порядок в файле `config.toml`. Переменная `DCR_INDEX_PATH` переопределяет путь к index.json.
## Git-зависимости
Git dependencies are cloned into `~/.dcr/git/`; their exact checked-out commit is written to `dcr.lock`.
Both Git and path dependencies have two modes:
* **DCR package:** the source has `dcr.toml`. DCR builds it before the consumer and uses the package name from its manifest for linking.
* **Prebuilt library:** it provides existing headers and binaries through `include`, `lib`, and `libs`. DCR passes them to the compiler/linker without building the dependency.
The mode is normally detected automatically. Use `mode = "build"` or `mode = "prebuild"` when a source contains both a manifest and prebuilt artifacts and you need to choose explicitly.
`dcr-math-lib` publishes both forms. Select its prebuilt library explicitly:
```toml
[dependencies]
dcr-math = { git = "https://github.com/dexoron/dcr-math-lib.git", tag = "v0.1.0", mode = "prebuild", include = ["include"], lib = ["lib"], libs = ["dcr-math"] }
```
DCR supports specifying branch/tag/rev for git sources:
* `branch` — переключиться на ветку
* `tag` — переключиться на тег
* `rev` — переключиться на конкретный коммит
* `features` — флаги функций (проанализированы, но не влияют на сборку)
## Path dependencies
Local paths may point at a DCR package or a prebuilt external library. A path DCR package is built before its consumer, including its own path/git dependencies. DCR detects dependency cycles. A prebuilt library is never built by DCR; it is linked from the directories declared in its dependency entry.
```toml
[dependencies]
mylib = { path = "/abs/path/to/lib" }
mylib = { path = "../relative/path" }
```
For DCR packages, the package name from `dcr.toml` is used for linking (so the dependency key may differ from the library name). Header resolution includes the packaged `target/include` directory and link search includes `target/lib`.
### Recommended library layouts
Buildable DCR library:
```text
dcr-math-lib/
├── dcr.toml
└── src/
├── dcr_math.c
└── dcr_math.h
```
Prebuilt library:
```text
dcr-math-lib/
├── include/
│ └── dcr_math.h
└── lib/
└── libdcr-math.a # or .so / .lib
```
`libs` contains linker names without the `lib` prefix and file extension: use
`["dcr-math"]` for `libdcr-math.a`.
If one repository contains both forms, keep the prebuilt files in `include/` and `lib/` and select the mode explicitly:
```toml
[dependencies]
dcr-math = { git = "https://github.com/dexoron/dcr-math-lib.git", tag = "v0.1.0", mode = "prebuild", include = ["include"], lib = ["lib"], libs = ["dcr-math"] }
```
For a local copy, replace `git` with `path = "../dcr-math-lib"`. In `prebuild` mode DCR does not run the dependency build, even when `dcr.toml` is present.
## dcr.lock
Dependency lock file. Contains package names and sources.
Created during `dcr build` for resolved registry, path, and Git dependencies. Not updated during `dcr add` — only on the next `dcr build`.
## Resolution process
1. Resolve dependency sources (registry → git → path)
2. Fetch git dependencies into `~/.dcr/git/` and check out the requested ref
3. Build DCR package dependencies recursively
4. Collect `include_dirs`, `lib_dirs`, `libs` for the compiler

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sidebar_label: Переменные среды
---
# Переменные среды
## DCR_COMPILER
Переопределяет компилятор для всех языков. **Наивысший приоритет.**
```bash
export DCR_COMPILER=clang
dcr build
```
Приоритет разрешения компилятора:
1. `DCR_COMPILER` (переменная среды)
2. `DCR_CC` / `DCR_CXX` / `DCR_AS` (переменная среды)
3. `[toolchain]` (dcr.toml)
4. `build.compiler` (dcr.toml)
5. `PATH`
## DCR_CC / DCR_CXX / DCR_AS
Приоритет: `[toolchain]` > `DCR_COMPILER` > `DCR_CC` > `PATH`.
```bash
export DCR_CC=gcc-14
export DCR_CXX=g++-14
export DCR_AS=arm-linux-gnueabihf-as
```
## DCR_LD / DCR_AR
Переопределить линкер и архиватор.
```bash
export DCR_LD=ld.lld
export DCR_AR=llvm-ar
```
## DCR_DEBUG
Включает режим отладки — печатает все команды компиляции перед выполнением.
```bash
export DCR_DEBUG=1
dcr build
```
## DCR_INDEX_PATH
Переопределяет путь к index.json реестра.
```bash
export DCR_INDEX_PATH=/custom/path/index.json
```
По умолчанию: `~/.dcr/index.json`.
## DCRUP_MIRROR
Download mirror for `dcrup` (prebuilt binaries only).
```bash
export DCRUP_MIRROR=auto # cf → gh → sf → ya (default)
export DCRUP_MIRROR=cf # CloudFlare CDN
export DCRUP_MIRROR=gh # GitHub Releases
export DCRUP_MIRROR=sf # SourceForge
export DCRUP_MIRROR=ya # Yandex CDN (RU fallback)
```
CLI override: `dcrup install stable --mirror cf`.
## DCRUP_HOME / DCRUP_BIN / DCRUP_REPO
Installer layout and source clone URL:
```bash
export DCRUP_HOME=~/.dcr
export DCRUP_BIN=~/.dcr/bin
export DCRUP_REPO=https://github.com/dexoron/dcr
```

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sidebar_label: Поддержка платформ
---
# Поддержка платформ
## Тройные цели
DCR нормализует target triple через `platform_triple::normalize_triple()`. Если задано имя платформы (short name), оно раскрывается в triple.
### Linux
```
target/<arch>-unknown-linux-<env>/<profile>/
```
Architectures: `x86_64`, `aarch64`, `i686`, `armv7`, `riscv64` (host-detected).
Environments: `gnu` (default), `musl`.
Тип артефакта: ELF. Расширения: `.so` для sharedlib, `.a` для staticlib
### macOS
```
target/<profile>/ (default) or target/<triple>/<profile>/ (with target)
```
Поддержка архитектур: `x86_64`, `aarch64`.
`.dylib` для sharedlib, `.a` для staticlib
### Windows
```
target/<profile>/ (default) or target/<triple>/<profile>/ (with target)
```
Поддержка архитектур: `x86_64`, `aarch64`.
Environments: `msvc` (default), `gnu` (MinGW).
Расширения: `.exe` (бинарный файл), `.lib` (статическая библиотека), `.dll` (общая библиотека), `.efi` (UEFI).
### BSD
```
target/<arch>-unknown-<os>/<profile>/
```
Поддерживаемые системы: `freebsd`, `openbsd`, `netbsd`.
## Определение хоста
`platform_triple::host_triple()` возвращает тройку текущей системы. Используется как fallback, если `target` не указан.

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sidebar_label: Рабочие пространства
---
# Рабочие пространства
Workspaces позволяют управлять несколькими пакетами в одном репозитории.
## Конфигурация
```toml
[workspace]
members = [
{ path = "pkg-a" },
{ path = "pkg-b", deps = ["pkg-a"] },
{ path = "pkg-c", deps = ["pkg-a", "pkg-b"], main = true },
]
```
### Поля member
| Поле | Описание |
| ------ | -------------------------------------------- |
| `path` | Путь к пакету (относительно корня workspace) |
| `deps` | Зависимости от других member-ов |
| `main` | Пометить как главный пакет |
## Топологическая сортировка
DCR автоматически сортирует пакеты по зависимостям: пакет A собирается раньше B, если B зависит от A.
Циклические зависимости обнаруживаются и приводят к ошибке.
## Сборка
```bash
dcr build # собрать все пакеты
dcr build --workspace pkg-a # собрать только pkg-a
```
When building a workspace, DCR automatically injects include and library paths of dependent workspace members:
* **Include Paths**: Automatically resolves and injects header directories of dependencies, including the member's `src/` directory, local `include/` directory, and the packaged `target/include` directory.
* **Library Paths**: Injects compiled library search paths (`target/lib` as well as target-specific build folders) to allow automatic linking with member libraries.
## Очистка
```bash
dcr clean # очистить только корневой target/
dcr clean --all # очистить target/ всех пакетов
```
## Наследование
Если у member-а нет своей секции `[build]`, а в корневом `[build]` указано `inherit = true`:
```toml
[build]
inherit = true
language = "c"
standard = "c17"
```
## Workspace-only root (no build of its own)
A workspace root can set `workspace_only = true` — it won't be built itself, and doesn't need `language` or `compiler`:
```toml
[package]
name = "my-workspace"
version = "0.1.0"
[build]
workspace_only = true
kind = "bin"
[workspace]
lib-core = { path = "lib-core" }
app = { path = "app", deps = ["lib-core"] }
```

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sidebar_label: Автоматическое обновление
---
# Автоматическое обновление
## dcr --update
Автоматическое обновление до последней версии. Загружает бинарный файл (не архив) из раздела «Релизы» на GitHub и заменяет им текущий исполняемый файл.
```bash
dcr --update
```
## Как это работает
1. DCR определяет текущую платформу и архитектуру
2. Загружает последнюю версию с `api.github.com/repos/dexoron/dcr/releases/latest`
3. Сравнивает версии
4. Загружает соответствующий ресурс (прямой URL-адрес двоичного файла, а не архива)
5. Заменяет текущий исполняемый файл
## Названия активов
Шаблон: `dcr-\<triple>.\<ext> `
| Платформа | Название актива |
| -------------- | ------------------------------------- |
| Linux x86_64 | `dcr-x86_64-unknown-linux-gnu.tar.gz` |
| macOS x86_64 | `dcr-x86_64-apple-darwin.tar.gz` |
| macOS ARM64 | `dcr-aarch64-apple-darwin.tar.gz` |
| Windows x86_64 | `dcr-x86_64-pc-windows-msvc.zip` |
## AUR
Если DCR установлен через AUR, `--update` выводит предупреждение:
```
Обновление через менеджер пакетов: yay/paru -Syu {package_name} или sudo pacman -Syu {package_name}
```
## Ошибки
* Не удалось определить платформу — ошибка
* Не удалось скачать релиз — ошибка с URL
* Нет прав на запись бинарника — ошибка (нужен `sudo` или ручная установка)

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---
sidebar_label: Запуск тестов
---
# Запуск тестов
## Выполнение
```bash
Тест DCR
```
Выполняет сборку проекта, а затем компилирует и запускает тестовые файлы из каталога `tests/`.
## Профили
```bash
dcr test # debug (по умолчанию)
dcr test --release # release
dcr test --debug # явно debug
```
## Вывод
```
=====================
Сводка результатов набора тестов
=====================
ИСПОЛЬЗОВАНО: 5
ПРОЙДЕНО: 3
ПРОПУЩЕНО: 1
НЕ ПРОЙДЕНО: 1
=====================
```
## Код возврата
* 0 — все тесты пройдены (FAIL = 0)
* 1 — есть упавшие тесты
## Что строится
* Все C/C++ файлы из `tests/`
* Include path: `tests/` (для `dcr_test.h`)
* Линкуется с основным проектом (если `type = "lib"`)

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---
sidebar_label: Тестовая инфраструктура (EXPECT, TEST, ...)
---
# Тестовая инфраструктура
DCR имеет встроенный минималистичный фреймворк для тестирования на C/C++.
## Макросы
### `EXPECT(expr, ...)`
Проверяет, что выражение истинно.
```c
EXPECT(1 + 1 == 2);
EXPECT(ptr != NULL, "ptr should not be NULL");
```
### `SKIP(...)`
Пропускает тест с опциональным сообщением.
```c
SKIP("not implemented on Windows yet");
```
### `TEST(имя)`
Определяет тест.
```c
TEST(сложение) {
EXPECT(1 + 1 == 2);
EXPECT(2 + 2 == 4);
}
```
### `TEST_CASE(name, ...)`
Регистрирует тестовый случай.
```c
TEST_CASE(math, a, b) {
EXPECT(a + b == b + a);
}
```
## Инициализация
```bash
dcr test --init
```
Создаются файлы:
* `tests/dcr_test.h` — заголовочный файл фреймворка
* `tests/test.c` — шаблон с примером теста
## Структура tests/
```
tests/
├── dcr_test.h # фреймворк (не редактировать)
├── test.c # основные тесты
└── ... # дополнительные .c файлы с тестами
```
Компилируются только файлы с расширением `.c` (файлы с расширением `.cpp` не поддерживаются).

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---
sidebar_label: Introduction
---
# DCR — C/C++ Build Tool & Package Manager
<details>
<summary>Quick reference</summary>
```bash
# Installation (dcrup)
curl -fsSL https://sh.dcr-tool.ru | sh -s -- self-install
export PATH="$HOME/.dcr/bin:$PATH"
dcrup install stable # auto: cf → gh → sf → ya
# dcrup install stable --mirror cf # CloudFlare / GitHub / SourceForge / Yandex
# Create a project
dcr new my-app
cd my-app
# Build and run
dcr build
dcr run
# Run tests
dcr test
# Add a dependency
dcr add fmt
# Generate IDE files
dcr gen vscode
```
</details>
## Contents
| Section | Description |
| ----------------------------------------------------- | --------------------------------------------- |
| [Getting Started](/docs/getting-started/installation) | Installation and first steps |
| [Commands](/docs/commands/project-commands) | All CLI commands |
| [Reference](/docs/reference/dcr-toml) | Configuration, build, dependencies, platforms |
| [Testing](/docs/testing/test-framework) | Built-in test framework |
| [Recipes](/docs/recipes/cross-to-windows) | Common scenarios |
| [IDE Integration](/docs/ide-integration) | VS Code, CLion, compile_commands.json |
| [Self Update](/docs/self-update) | Auto-update |
| [FAQ](/docs/faq) | Frequently asked questions |
| [Changelog](/docs/changelog) | Version history |
| [License](/docs/license) | DCR and vendored library licenses |
| [Contributing](/docs/contributing) | DCR development |
## Features
* **Incremental builds** — mtime + `.d` headers + SHA256 fingerprint
* **Parallel compilation** — thread::scope, atomic task queue
* **7 backends** — gcc/clang (unix_cc), MSVC/clang-cl (msvc), GAS, NASM, MASM, FASM, LLVM IR
* **8 project kinds** — bin, staticlib, sharedlib, efi, elf, none, custom, flat-bin
* **Disk images** — optional `[archive]` packs FAT12/16/32 images after build
* **Cross-compilation** — short names and full triples
* **Profiles** — debug / release with field overrides
* **Workspaces** — multi-package projects with topological sort
* **Registry + Git + Path** — three dependency mechanisms
* **IDE generation** — VS Code, CLion, compile_commands.json, JSON metadata
* **pkg-config** — automatic system library discovery
* **Per-command `--help`** — `dcr build --help`, `dcr new --help`, etc.
* **Man pages** — `man dcr`, `man dcr-build`, `man dcr-new`

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---
sidebar_label: Changelog
---
# Changelog
## 0.9.0 (2026-08-31)
* **Download mirrors in `dcrup`** — `--mirror auto|cf|gh|sf|ya` and `DCRUP_MIRROR`.
Default `auto` tries **cf → gh → sf → ya** (CloudFlare CDN, GitHub, SourceForge, Yandex CDN).
* **Complete Path/Git dependencies** — DCR packages from `path` and `git` are built before their consumer. Git sources are cached in `~/.dcr/git`, support `branch`/`tag`/`rev`, and record the exact commit in `dcr.lock`.
* **Build and prebuild modes** — `path` and `git` dependencies can build a DCR package from `dcr.toml` or link existing `include`/`lib`/`libs` artifacts; `mode = "build"` / `"prebuild"` selects explicitly when both forms are present.
* **Prebuilt dependency examples** — documentation now shows the `dcr-math-lib` Git repository and recommended build/prebuilt layouts for both `git` and `path`.
* **Transitive dependency builds and cycle reporting** — DCR recursively builds DCR packages and reports a clear dependency chain for cycles.
* **Bare path arguments for `dcr add`** — `dcr add mylib ../mylib` now works in addition to the explicit `path:` form.
* **Removed `install.sh` / `install.ps1` / `install_bsd.sh`** — superseded by `dcrup`.
## 0.8.5 (2026-08-08)
* **`package.dcr-version`** — optional CLI version pin in `dcr.toml`.
`dcr new` / `dcr init` write the current version. On config load:
* missing / empty pin → warn "add dcr-version";
* dcr older than pin → warn "update dcr";
* dcr newer than pin → warn "check changelog, update pin";
* equal → silent.
Commands do not fail, warning only (once per path per process).
## 0.8.4 (2026-08-04)
**Added:**
* **`.dcr/` directory** — shared machine-readable build facts for IDE integrations:
* `.dcr/compile_commands.json`
* `.dcr/build-info.json` (`schemaVersion`, `artifact_path`, `profile`, …)
* `.dcr/toolchain.json` (compiler/debugger paths, moc/uic/rcc)
* `.dcr/ide/` (placeholder for IDE lock files)
* **`dcr gen project-info`** — `target`, `target_dir`, `artifact_path`, `artifact_kind`, `source_roots`, `include_globs`, `exclude_globs`; absolute/canonical paths.
* **`dcr build --print-artifact-path`** — one absolute artifact path line on stdout after a successful build.
* **`dcr gen … --quiet` / `-q`** — suppress human success logs for gen subcommands.
* **`.clangd`** — created on first gen with `CompilationDatabase: .dcr` (`# managed by dcr gen`); custom `.clangd` is not overwritten.
* **Helpers** `canonicalize_path`, `atomic_write`, `ensure_dcr_dir`; pure `resolve_artifact_path` via `platform::*`.
* **`dcr new` / `dcr init`** — add `.dcr/` to `.gitignore`.
**Changed (breaking):**
* **`compile_commands.json` moved** from project root to **`.dcr/compile_commands.json`**.\
clangd discovers it via `.clangd` / `--compile-commands-dir=.dcr`.\
CLion and VSCode generators updated accordingly.
* **Atomic write** for compile_commands (tmp + rename).
* **`gen vscode` / `gen clion` launch/run** — use the same artifact path resolver as `project-info` / `build-info.json`.
**Fixed:**
* Launch configs no longer hardcode `target/\<profile>/\<name>` without the Linux triple segment.
* Symlink/mount roots: best-effort canonicalize for root and compile database paths.
## 0.8.3 (2026-08-03)
### Added
* **`dcr run -- \<args>...`** — cargo-style argument forwarding after a bare `--`\
(`dcr run --release -- --test_help`). Applies to direct binary runs and `[run].cmd`.
* **Tests** — host target section `ldflags` without CLI `--target`; run-arg forwarding; `split_double_dash` unit tests.
### Changed
* **Native builds resolve the host triple** — without `--target` / package `build.target`, host sections such as\
`[build.x86_64-unknown-linux-gnu]` apply again (`cflags` / `ldflags` / toolchain).\
Previously the target was empty and those sections were ignored while artifacts already used the host triple path.
* **Empty target** — no more `Unknown target ''` warning.
* **`dcr run --help` / man `dcr-run`** — document `--` forwarding.
### Fixed
* **Native artifact paths on Windows and macOS** — without an explicit `--target` / `build.target`, artifacts use `target/\<profile>`, so `dcr run` and flat-bin find the build output.
* Target-specific `ldflags` missing on native host builds (e.g. micro-lang + `libsct-elf`).
* Spurious empty-target warning.
## 0.8.2 (2026-07-22)
### Added
* **Compile progress `[N/M]`** — live TTY status line (`compile pkg v0.1.0 [12/41]`) so long mono-package builds do not look hung.
* **DCR status style** — fixed-width verbs: `project`, `compile`, `dep`, `ready`, `pack`, `done`, `run`.
* **Cargo feature `archive`** — optional FAT packing via `fatfs` (`cargo build --features archive`). Release CI builds with the feature; without it `[archive]` fails with a clear message.
* **Tests** — `flat_bin_nasm_build`, package `build.target` without CLI `--target`, stricter workspace `clean --all`.
* **CI expansion** — unit + integration on Linux/macOS/Windows, archive feature job, rust-cache, clippy default + all-features (see `.github/workflows/ci.yml`).
### Changed
* **No forced host triple from CLI** — without `--target`, package/member `build.target` is honored (bare-metal / ISO `post_steps` paths).
* **Relative include/lib flags** (`-I`, `-i`, `-isystem`, `-idirafter`, `-L`, `-T`) absolutized against the package root under workspace builds.
* **`dcr clean --all`** — no spam for members without a local `target/` (shared root `target/`).
* **`error` / `warn`** — red / yellow on stderr; CLI fully English (`Hint:`).
* **Help / man** — list `add`, `lint`, `setup`; unknown command exits with code 1.
* **Tool NotFound** — `linker not found: ld.lld …` / `{tool} not found …` instead of raw `os error 2`.
## 0.8.1 (2026-07-20)
### Added
* **`build.kind = "flat-bin"`** — raw binary (default `.bin`) for OS-dev payloads:
* **NASM** — `-f bin` → `\<stem>.bin`
* **FASM** — direct output (`format binary` in source)
* **GAS / MASM / LLC** — object → `objcopy -O binary` → `\<stem>.bin`
* **C/C++** — objects → freestanding link → `objcopy -O binary` → `\<name>.bin`
* Requires `llvm-objcopy` / `objcopy` / `gobjcopy` except for NASM/FASM direct emit
* **`[archive]` section** — FAT12/16/32 disk images after build (`output`, `format`, `size`, `offset`, `label`, `bootsector`, `layout`). From 0.8.2 requires feature `archive`.
* **Single-file `build.roots`** — a root may be a single source or header file, not only a directory.
### Changed
* **`--force`** also re-runs `build.steps` and `build.post_steps`.
* **`dcr run` on workspace-only root** — if `[run].cmd` is set, run that after build; otherwise delegate to a workspace member.
## 0.8.0 (2026-07-18)
### Added
* **Dedicated Build Engine (`src/core/build/engine.rs`)** — decoupled the build orchestration logic completely from the CLI front-end wrapper in `src/cli/build.rs` to a reusable, decoupled core build engine.
* **Polymorphic Language Model (`Language` trait)** — introduced the abstract `Language` trait (`src/core/build/language/mod.rs`). File scanning, compiler resolution, and flags handling are now encapsulated in dedicated language modules for C, C++ (including Qt code generation), LLVM IR, and ASM (GAS, NASM, FASM, MASM).
* **Polymorphic Compilation Dispatch (`Builder` trait)** — introduced the `Builder` trait to generalize builder invocations (`src/core/build/builder/mod.rs`). Consolidated GCC/Clang logic into `builder/cc_common.rs` and Microsoft Visual C++ logic into `builder/msvc/`.
* **Per-Language Configuration overrides (`[build.\<lang>]`)** — introduced support for configuring language-specific compiler, standard, and flags (e.g. `[build.c]`, `[build.cxx]`, `[build.asm]`) independently in `dcr.toml`.
* **Automatic Workspace Dependency Injection** — during workspace builds, include/lib paths of dependent workspace members (including their source headers, local `include/` folders, and build target `target/include` / `target/lib` folders) are automatically resolved and injected.
* **`BuildReporter` Event System** — decoupled build orchestration output into a structured event-driven reporter model (`src/core/build/report.rs`), making DCR suitable for library embedding and IDE integrations without stderr capturing.
* **Build Cancellation Support** — introduced thread-safe cancellation tokens (`Arc\<AtomicBool>`) allowing clients to safely abort compile runs mid-execution.
* **TOML Formatting & Custom Keys Preservation** — migrated the config editor to `toml_edit`, preserving all unknown/user-defined TOML keys, structures, and comments during file write operations (e.g., in `dcr add`).
* **Path Dependencies Target Include Resolution** — local path dependencies configured via tables now correctly expose headers built and packaged into their `target/include` folder to consumer packages.
* **Modular Integration Test Suite** — refactored the monolith `tests/cli_basic.rs` file into clean, specialized integration tests: `cli_build.rs`, `cli_deps.rs`, `cli_lint.rs`, `cli_new.rs`, `cli_qt.rs`, `cli_test.rs`, `cli_workspace.rs`.
### Changed
* **Consolidated Linking and Archiving** — artifact generation (linking executables/shared libraries and archiving static libraries) consolidated into a single `src/core/build/builder/artifact.rs` module.
* **Workspace-Aware member execution** — `dcr run` executed at the workspace root of a `workspace_only` project now triggers the member build inside the workspace context using the `--workspace` parameter, preventing standalone build issues.
* **Elimination of Global State** — removed global variables and states from the build core, encapsulating build logic inside isolated `BuildContext` structs for thread safety.
* **Build Cache Separation** — relocated mtime tracking, incremental caching, and header-dependency checking logic to `src/core/build/cache.rs`.
* **Modularized Pre-build Steps** — decoupled generator scripts and pre-build commands parsing into `src/core/build/steps.rs`.
## 0.7.4 (2026-06-17)
### Added
* **Native Qt support** — automatic meta-object handling (MOC, UIC, RCC) added when `build.qt = true` is set in `dcr.toml`.
* **`dcr lint` command** — C/C++ static analysis via `clang-tidy`. Supports `--fix` for automatic fixes. Respects `build.roots` and `build.src_disable` from config.
* **Three new assembler backends**:
* **MASM** (`compiler = "ml"` / `"ml64"`) — Microsoft Macro Assembler.
* **FASM** (`compiler = "fasm"`) — Flat Assembler.
* **LLVM IR** (`compiler = "llc"`) — compiles `.ll` files via `llc -filetype=obj`.
* **Shared ASM pipeline** — linking and archiving logic consolidated into `core/builder/asm.rs`. Adding a new assembler backend now takes ~30 lines.
* **Filesystem utilities** — `to_hex()` and `home_dir()` extracted to `utils/fs.rs`.
* **Build utilities** — `normalize_target()`, `normalize_kind()`, `normalize_platform()`, `default_profile_flags()` extracted to `utils/build.rs`.
* **Backend helpers** — `asm_lang_flag()`, `source_extensions()`, `elapsed_secs()` added to `core/builder/common.rs`.
* **Full Bare-Metal / Freestanding Automation** — introduced the `build.freestanding = true` configuration option. When enabled (or when a bare-metal target is detected), DCR automatically injects `-ffreestanding` during compilation and both `-nostdlib` and `-static` during linking.
* **Artifact Optimization (LTO & Strip)** — added `build.lto` (auto-injects `-flto` for compiler and linker) and `build.strip` (automatically strips debug symbols via linker `-s` flag) options to `dcr.toml`.
* **Compilation Thread Control** — added the `build.codegen-units` option to strictly limit the maximum number of parallel jobs utilized by the custom `parallel_build` worker pool.
* **Panic Behavior Management** — added `build.panic = "abort"` support. For C++ targets, it automatically strips exception handling and unwind tables via `-fno-exceptions`, `-fno-unwind-tables`, and `-fno-asynchronous-unwind-tables`.
### Changed
* **Intelligent Default Flags Generation** — automated injection of fallback optimization (`-O3`/`-O0`), debug (`-g`), and warning (`-Wall -Wextra`) flags is now suppressed for bare-metal and freestanding builds if `build.cflags` are overridden.
* **Centralized Bare-Metal Detection** — relocated the `is_bare_metal_target` helper to common build utilities (`src/utils/build.rs`) for unified access across the building core.
* **Architectural Refactoring**:
* Renamed `src/config.rs` to `src/templates.rs`.
* Started consolidation of configuration and build orchestration logic.
## 0.7.3 (2026-06-13)
### Added
* **`--vcs` option for `new` and `init` commands** — introduced explicit version control system selection via `--vcs \<git|none>`.
* **Git metadata integration in `--version`** — the CLI now appends the current short commit hash and a `-dirty` suffix if there are uncommitted changes in the DCR repository.
* **Automatic `.gitignore` generation** — Git repository initialization now automatically writes a `.gitignore` file excluding the `/target` directory.
* **Nested repository prevention** — automatic Git initialization is now skipped if `dcr new` or `dcr init` is executed inside an already existing Git repository.
* **VCS verification tests** — added `new_vcs_options_work` and `init_vcs_options_work` integration tests to ensure reliable repository behavior.
### Changed
* **Complete removal of `git2` dependency** — all Git actions (dependency fetching, VCS setup, status checks) are now delegated to the system `git` executable via `Command`. This simplifies compilation and drops the need for `vendored` and `openssl` features.
* **Migrated from `reqwest` to `ureq`** — replaced the heavy `reqwest` crate in `flag_update.rs` with the lightweight synchronous `ureq 2.10` client, reducing overhead and the final binary size.
## 0.7.2 (2026-06-07)
### Added
* `default_target_triple()` now respects `target_env` — Linux (gnu/musl) and Windows (msvc/gnu) use the correct environment instead of hardcoded values.
### Fixed
* **macOS Apple Silicon builds failed with `_main` undefined** — `--target=` is now passed to ldflags, not just cflags. `default_target_triple()` uses `std::env::consts::ARCH` on macOS instead of hardcoded `x86_64`.
* **GitHub Stars and GPL-3.0 badges not rendering in README** — badge block converted to pure HTML.
### Changed
* Default target resolution extracted into shared `default_target_triple()` — removed duplication across build, run, clean.
## 0.7.1 (2026-06-02)
### Added
* **`--help` for all commands** — `dcr build --help`, `dcr run --help`, `dcr new --help`,
`dcr init --help`, `dcr clean --help`, `dcr add --help`, `dcr fmt --help`,
`dcr setup --help`, `dcr tree --help`, `dcr gen --help`, `dcr --update --help`,
`dcr test --help`. All output uses styled headers (green) and usage lines (cyan).
* **Man pages** — 12 troff pages in `man/man1/`: `dcr.1`, `dcr-build.1`,
`dcr-run.1`, `dcr-new.1`, `dcr-init.1`, `dcr-clean.1`, `dcr-add.1`, `dcr-test.1`,
`dcr-gen.1`, `dcr-fmt.1`, `dcr-tree.1`, `dcr-setup.1`.
* **Man pages in all packaging** — install.sh, install_bsd.sh, AUR PKGBUILD,
Debian (cargo-deb), RPM (cargo-generate-rpm), Nix (postInstall), Homebrew
(resource), Snap, GitHub Release assets.
* **Project name validation** — `dcr init` and `dcr new` now validate names before
creating files. Only ASCII letters, digits, `_` and `-` are allowed.
* **`documentation` and `homepage` fields** — added to `Cargo.toml`.
* **Release profile optimizations** — `opt-level = "z"`, LTO, `codegen-units = 1`,
`panic = "abort"`, `strip = true` for smaller binaries.
* **Linux i686, armv7, riscv64 targets** — added to release workflow and install scripts.
* **Linux musl i686, armv7 targets** — cross-compiled via zigbuild in CI.
* **AUR packages** — `dcr-dev`, `dcr-dev-bin` publishing workflow.
* **Snap publishing** — automated Snapcraft publishing in CI.
* **Snap badge** — in README.
### Changed
* **`validate_package_name` made public** — callable from CLI commands.
* **README platform table** — reorganized: libc variants as separate OS rows,
removed extra columns. Linux architecture list updated.
* **`gen.rs` no-args output** — now uses styled output instead of raw `eprintln!`.
* **`tree.rs`, `fmt.rs`, and `setup.rs`** — now accept arguments for `--help`.
* **README install commands** — `| bash` → `| sh` for POSIX compatibility.
### Fixed
* **`dcr new \<invalid-name>` creates directory then fails** — validation now
happens before any file operations.
* **`dcr init` on invalid directory name** — same fix.
* **Man pages missing in installed packages** — now shipped in all formats.
* **Windows drive letter false positive** — in dependency file parser.
* **CRLF (`\r\n`) breaks dependency parser** — now handles mixed line endings.
* **Newline after backslash not consumed** — in `parse_d_file` escape handling.
## 0.7.0 (2026-06-01)
### Added
* **OpenBSD and NetBSD target support** — full platform routing with dynamic target triples using `std::env::consts::ARCH` and `std::env::consts::OS`. Affects `build`, `run`, `clean` commands and the platform module.
* **`src/platform/bsd.rs`** — new BSD platform module (shared by FreeBSD, OpenBSD, NetBSD) providing `bin_path`, `lib_path`, `elf_path`, `efi_path`, `shared_lib_path`.
* **`build.out_dir` config option** — custom output directory that overrides the default `target/\<triple>/\<profile>` path for final artifacts. Supported in `build`, `run`, and config validation.
* **`dcr fmt` command** — new CLI command that formats all C/C++ source files (`*.c`, `*.cpp`, `*.h`, `*.hpp`) in `src/` and `tests/` using `clang-format`.
* **Incremental linking** — `needs_link()` in `common.rs` checks if any object file is newer than the linked output, skipping unnecessary relinking. Implemented for all backends (`unix_cc`, `msvc`, `gas`, `nasm`).
* **`build.kind = "none"` and `"custom"`** — two new project kinds for special build scenarios that don't produce standard artifacts.
* **`install_bsd.sh`** — POSIX-compliant installation script for BSD systems (FreeBSD, OpenBSD, NetBSD) with binary download and source build modes.
* **Linux ARM64 support in `install.sh`** — added `Linux:aarch64|Linux:arm64` target detection for pre-built binary downloads.
* **BSD OS detection in `install.sh`** — detects FreeBSD, OpenBSD, NetBSD and determines target triple.
* **`rust-toolchain.toml`** — explicit toolchain pinning to `stable` channel.
* **Integration tests** — `build_with_target_config` (verifies `build.target = "linux"`) and `build_with_out_dir` (validates custom output directory).
* **`get_build_string_with_profile` made `pub`** — so `run.rs` can determine custom output directory configuration.
### Changed
* **`build.target` semantics changed** — now strictly contains a target triple (e.g., `x86_64-unknown-linux-gnu`) or short name (`linux`, `macos`, `windows`). No longer used as custom output directory — this functionality moved to `build.out_dir`.
* **`build.standard` made optional** — changed from `String` to `Option\<String>`. Validation only enforces non-empty for non-ASM languages. Skipped in `dcr.toml` output if empty.
* **`dcr run` with `out_dir`** — now determines target directory respecting `build.out_dir` via `get_build_string_with_profile()` from `build.rs`.
* **`collect_sources()` returns empty vector** instead of error when no sources are found, allowing `kind = "none"` or `kind = "custom"` projects with no source files.
* **CI/CD release workflow refactored** — `git2` made target-specific (no vendored-openssl on Windows), Zig-based cross-compilation for non-x86_64 Linux targets, Arch Linux package version cleanup (dashes → dots), `gmake` symlink for NetBSD.
* **README compatibility table** — FreeBSD, OpenBSD, NetBSD build/run status upgraded from "community/best-effort" to "officially supported".
* **Documentation updated** — `build-section.md` describes new `build.target` and `build.out_dir` fields. `target-directory.md` rewritten to clarify the distinction.
### Fixed
* **stdout/stderr not inherited in `dcr run`** — child process output was captured and manually printed, breaking interactive programs. Fixed by switching to `Command::status()`.
* **Race condition in release CI** — matrix build jobs could upload assets to a release that didn't exist yet. Fixed by adding a dedicated `create-release` job.
* **Release GHA — stable toolchain override** — fixed Rust toolchain override issues in CI.
* **Arch Linux package version sanitization** — version strings with dashes (e.g., `0.7.0-dev`) are invalid for `pkgver`. Fixed by replacing dashes with dots.
* **GPG permissions after Docker** — Docker operations changed GPG directory ownership. Fixed by running `chown` after Docker commands.
* **RPM artifact paths** — RPM artifacts were placed in `rpm/x86_64/` instead of `fedora/x86_64/`. Fixed in Dexoron Packages Index workflow.
* **JSON parsing reliability in `install.sh`** — added `jq` as primary parser with `python3` fallback for dev channel release lookup.
### Removed
* **`format_roots()` helper function** — removed from `common.rs`. Was only used by the old error handling path in `collect_sources()`.
* **Per-distribution artifact download steps** — three separate `actions/download-artifact` steps replaced with unified `gh release download --clobber`.

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---
sidebar_label: Build commands (build, run, clean)
---
# Build Commands
## `dcr build`
Builds the project according to `dcr.toml`.
```bash
dcr build # debug profile
dcr build --release # release build
dcr build --debug # explicit debug
dcr build --target aarch64-unknown-linux-gnu
dcr build --force # full rebuild (also re-runs build.steps / post_steps)
dcr build --clean # clean + build
dcr build --verbose # show compilation commands
dcr build --workspace pkg-a # build specific workspace package
```
Artifacts: `target/\<triple>/\<profile>/\<binary-name>` (Linux with explicit target).
With `[archive]` in `dcr.toml`, a FAT disk image is packed after a successful build.
## `dcr run`
Builds (if sources are newer than artifacts) and runs the binary.
```bash
dcr run
dcr run --release
dcr run --force # force rebuild then run
```
On a **workspace-only** root: if `[run].cmd` is set, that command is used after build; otherwise DCR delegates to a workspace member.
## `dcr clean`
Removes `target/` directory (or `target/\<target>/\<profile>`).
```bash
dcr clean
dcr clean --release # target/release/ only
dcr clean --target windows # target/x86_64-pc-windows-msvc/
dcr clean --all # clean all workspace packages
```

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---
sidebar_label: Dependency commands (add, tree)
---
# Dependency Commands
## `dcr add \<name> [source]`
Adds a dependency to `dcr.toml`.
```bash
dcr add fmt # registry lookup
dcr add mylib ../path/to/lib # path as source
dcr add mylib path:./lib # explicit path prefix
dcr add mylib git:https://github.com/user/repo # explicit git prefix
dcr add mylib github:user/repo # GitHub shorthand
dcr add mylib gitlab:user/repo # GitLab shorthand
```
Source prefixes:
* `path:` — local path
* `git:` — generic git URL
* `github:` — expands to `https://github.com/\<user>/\<repo>`
* `gitlab:` — expands to `https://gitlab.com/\<user>/\<repo>`
* `http://` / `https://` / `git@` — full URL
Flags:
* `--branch \<name>` — git branch
* `--tag \<name>` — git tag
* `--rev \<hash>` — git commit
If source is omitted — DCR searches connected registries. A bare relative or absolute path is accepted as a path dependency.
## `dcr tree`
Displays the project dependency tree.
```bash
dcr tree
```
Example output:
```
my-app v0.1.0
├── fmt (registry)
│ └── spdlog (registry)
└── catch2 (registry)
```
For path dependencies, recursively shows their own dependencies (from their `dcr.toml`).

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---
sidebar_label: Gen commands (vscode, clion, ...)
---
# Gen Commands
## `dcr gen \<target>`
Generates IDE integration files.
### vscode
```bash
dcr gen vscode
```
Creates:
* `.vscode/tasks.json` — `build` task (dcr build)
* `.vscode/launch.json` — debug launch configuration
* `.vscode/settings.json` — C/C++ settings (clangd paths, includes)
* `.vscode/extensions.json` — recommended extensions (vscode-clangd, vscode-lldb)
### clion
```bash
dcr gen clion
```
Creates:
* `.idea/externalTools.xml` — external tools (build, run, clean, test)
* `.idea/customTargets.xml` — custom build targets
* `.idea/misc.xml` — C/C++ project settings
* `.idea/runConfigurations/\<name>.xml` — per-binary run configurations
### compile-commands
```bash
dcr gen compile-commands
```
Generates `compile_commands.json` — standard format for clangd, cpptools, static analyzers.
### project-info
```bash
dcr gen project-info
```
Outputs JSON array with project metadata:
```json
[
{
"name": "my-app",
"version": "0.1.0",
"root": "/path/to/project",
"profile": "debug",
"language": "c",
"standard": "c17",
"cxx_standard": null,
"compiler": "/usr/bin/clang",
"kind": "bin",
"sources": ["src/main.c"],
"include_dirs": ["src"],
"lib_dirs": [],
"libs": [],
"cflags": ["-std=c17", "-O0", "-g"],
"ldflags": []
}
]
```

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---
sidebar_label: Project commands (new, init)
---
# Project Commands
## `dcr new \<name>`
Creates a new project with a standard structure and `dcr.toml`. The `name` argument is required.
Only ASCII letters, digits, underscores `_` and hyphens `-` are allowed in the project name.
```bash
dcr new my-app
dcr new my-app --vcs none
```
Flags:
* `--vcs \<git|none>` — Initialize version control system (defaults to `git` if available, or `none`).
Generates:
* `dcr.toml` with basic fields
* `src/main.c` with a `main` template
## `dcr init`
Initializes a DCR project in the current (empty) directory.
```bash
dcr init
dcr init --vcs none
```
Flags:
* `--vcs \<git|none>` — Initialize version control system (defaults to `git` if available, or `none`).
The project name is taken from the current directory name. The directory name must follow the same naming rules as `dcr new`.

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---
sidebar_label: Quality commands (test, fmt)
---
# Quality Commands
## `dcr test`
Runs tests.
```bash
dcr test # debug profile
dcr test --release # release profile
dcr test --debug # explicit debug
dcr test --help # detailed help
```
Before first use, initialize tests:
```bash
dcr test --init
```
This creates `tests/dcr_test.h` (framework) and `tests/test.c` (template).
What `dcr test` does:
1. Builds the project
2. Collects `tests/*.c` files (`.c` only, not `.cpp`)
3. Compiles and links each test file
4. Runs each test binary
5. Prints summary: TOTAL, PASS, SKIP, FAIL
6. Returns non-zero exit code on any FAIL
## `dcr fmt`
Formats C/C++ source files using `clang-format`.
```bash
dcr fmt
```
Processes: `src/**/*.{c,cpp,cxx,cc,h,hpp,hxx,hh}` and `tests/**/*.{c,cpp,cxx,cc,h,hpp,hxx,hh}`.
Uses `.clang-format` at the project root (if present), otherwise default clang-format style.
## `dcr lint`
Runs `clang-tidy` on C/C++ source files for static analysis.
```bash
dcr lint # show diagnostics
dcr lint --fix # apply fixes automatically
dcr lint --help # detailed help
```
Processes: `src/**/*.{c,cpp,cxx,cc}` and `tests/**/*.{c,cpp,cxx,cc}`.
Without `--fix`, clang-tidy reports warnings and errors without modifying files.
With `--fix`, clang-tidy applies automatic suggestions in place.

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---
sidebar_label: System commands (setup, --help, ...)
---
# System Commands
## `dcr setup`
Shows configured registries from `~/.dcr/config.toml`.
```bash
dcr setup
```
If `~/.dcr/config.toml` is not found, DCR returns an error. Create it manually:
```toml
[registry.default]
url = "https://index.dcr.pm"
priority = 1
```
## `dcr --help`
Shows help for all commands.
```bash
dcr --help
```
## `dcr --version`
Shows version and target triple.
```bash
dcr --version # dcr 0.7.0 (x86_64-unknown-linux-gnu)
```
## `dcr --update`
Self-update. Downloads the latest release binary from GitHub Releases and replaces the current one.
```bash
dcr --update
```
Features:
* Auto-detects platform and architecture
* Warns if installed via AUR (use package manager instead)
* Works on Linux, macOS, Windows

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---
sidebar_label: Contributing
---
# Contributing
## Setup
```bash
git clone https://github.com/dexoron/dcr
# or a source mirror: GitVerse / SourceCraft / SourceForge / GitLab (see README)
cd dcr
cargo build
```
## Code style
All code must be formatted with `cargo fmt`:
```bash
cargo fmt
```
## Linting
```bash
cargo clippy --all-targets -- -D warnings
```
## Tests
```bash
cargo test --all-targets
```
## PR process
1. Fork the repository
2. Create a branch: `git checkout -b feature/description`
3. Make changes
4. Run `cargo fmt && cargo clippy && cargo test`
5. Open a Pull Request
## CI
CI runs (see `.github/workflows/ci.yml`):
* `cargo fmt --check`
* `cargo clippy` (default + `--all-features`)
* `cargo check --all-targets --all-features`
* Unit + integration tests on Linux, macOS, Windows
* Extra Linux job with `--features archive` (FAT images)
* Tools on runners: clang, nasm, clang-format/tidy (Linux)

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---
sidebar_label: FAQ
---
# FAQ
## Registry not found
```
error: registry not found
```
**Solution:** Make sure `~/.dcr/config.toml` exists:
```toml
[registry.default]
url = "https://index.dcr.pm"
priority = 1
```
And check `DCR_INDEX_PATH`:
```bash
echo $DCR_INDEX_PATH
```
## Compiler not found
```
error: compiler not found
```
**Solution:** Ensure a compiler is installed and available in PATH.
```bash
which gcc
which clang
```
Or specify explicitly via `[toolchain]` in `dcr.toml`.
## Ctrl+C during build
DCR handles SIGINT: interrupts the current compilation and exits with non-zero code.
## How to create a library?
See [Library Recipe](/docs/recipes/library-project).
## How to cross-compile to Windows?
See [Cross-Compile Recipe](/docs/recipes/cross-to-windows).
## How to create a multi-package project?
See [Workspace Recipe](/docs/recipes/multi-package-workspace).
## Bootloader / pure NASM OS image
Use `kind = "flat-bin"` (NASM `-f bin`) and optional `[archive]` for a FAT disk image.
See [OS-dev recipe](/docs/recipes/os-flat-bin-archive).
## How do I choose a download mirror?
`dcrup install` uses `--mirror auto` by default and tries **cf → gh → sf → ya**.
```bash
dcrup install stable --mirror cf
export DCRUP_MIRROR=ya
```
## Lock file
`dcr.lock` is created during builds (`dcr build`) when registry dependencies are present. To force an update — delete `dcr.lock` and run `dcr build`.

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---
sidebar_label: First steps
---
# First Steps
## Create a project
```bash
dcr new my-app
cd my-app
```
Structure:
```
my-app/
├── dcr.toml
└── src/
└── main.c
```
`dcr.toml`:
```toml
[package]
name = "my-app"
version = "0.1.0"
type = "none"
[build]
language = "c"
standard = "c11"
compiler = "clang"
kind = "bin"
```
## Build
```bash
dcr build
```
Output — `target/\<triple>/debug/my-app` (Linux) or `target/debug/my-app.exe` (Windows).
Build profiles:
```bash
dcr build --release # release build
dcr build --debug # debug (default)
```
## Run
```bash
dcr run
```
Builds (if needed) and runs the binary.
## First test
```bash
dcr test --init # create test template
dcr test # run tests
```
## Formatting
```bash
dcr fmt # clang-format with .clang-format
```
## Linting
```bash
dcr lint # clang-tidy checks
dcr lint --fix # apply fixes automatically
```

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---
sidebar_label: Installation
---
# Installation
## dcrup (recommended)
Install and switch DCR versions (stable / dev / night, pin `0.8.2`, optional build from source).
### Linux / macOS / BSD / Windows (bash)
```sh
curl -fsSL https://sh.dcr-tool.ru | sh -s -- self-install
export PATH="$HOME/.dcr/bin:$PATH"
dcrup install stable
```
Non-interactive install of DCR in one shot:
```sh
curl -fsSL https://sh.dcr-tool.ru | sh -s -- install stable
export PATH="$HOME/.dcr/bin:$PATH"
```
### Windows (PowerShell)
```powershell
irm https://ps1.dcr-tool.ru | iex
# or download then run:
# irm https://ps1.dcr-tool.ru -OutFile dcrup.ps1
# powershell -File .\dcrup.ps1 self-install
# $env:Path += ";$env:USERPROFILE\.dcr\bin"
dcrup install stable
```
Optional cmd bootstrap (if you prefer `curl` of the cmd shim):
```bat
curl -fsSL -o dcrup.cmd https://cmd.dcr-tool.ru
```
After `self-install`, the command is **`dcrup`** (no `.sh` / `.ps1`): shims live in `~/.dcr/bin` (Unix) or `%USERPROFILE%\.dcr\bin` (Windows `dcrup.cmd`).
### Common dcrup commands
```sh
dcrup install stable # latest stable prebuilt (auto: cf → gh → sf → ya)
dcrup install 0.8.2 # pin → 0.8.2@stable
dcrup install 0.8.2@dev
dcrup install stable --libc musl # Linux: musl asset (default: gnu)
dcrup install stable --mirror cf # CloudFlare CDN
dcrup install stable --mirror ya # Yandex CDN (RU fallback)
dcrup install stable --build # cargo build --features archive
dcrup install night # always build from branch dev HEAD
dcrup default 0.8.2
dcrup update
dcrup list
dcrup show
dcrup which
```
Layout: `~/.dcr/toolchains/\<id>/dcr` and `~/.dcr/bin/dcr` → active version.
### Download mirrors
Prebuilt installs try **cf → gh → sf → ya** unless you pin a host.
| Code | URL | Notes |
| ---- | ------------------------------------------------------------------------------------------------------------ | -------------------------- |
| `cf` | `https://cdn-global.dcr-tool.ru/\<tag>/\<asset>` | CloudFlare CDN (worldwide) |
| `gh` | `https://github.com/dexoron/dcr/releases/download/\<tag>/\<asset>` | GitHub Releases |
| `sf` | `https://sourceforge.net/projects/dcr-tool/files/\<tag>/\<asset>/download` | SourceForge |
| `ya` | `https://cdn-ru.dcr-tool.ru/\<tag>/\<asset>` | Yandex CDN (RU fallback) |
```sh
dcrup install stable --mirror auto # default
export DCRUP_MIRROR=cf # persist for this shell
```
---
## Arch Linux (AUR)
```sh
yay -S dcr
```
## macOS / Linux (Homebrew)
```sh
brew tap dexoron/dexoron
brew install dcr
```
## Snap (Linux)
```sh
sudo snap install dcrup
```
> If classic Snap Store publishing is unavailable, install the `.snap` from [GitHub Releases](https://github.com/dexoron/dcr/releases/latest) with `--dangerous`.
## Nix (flake)
```sh
nix run github:dexoron/dcr
nix profile install github:dexoron/dcr
```
## Cargo (crates.io)
```sh
cargo install dcr
```
Note: crates.io builds may omit optional features. For FAT disk images (`[archive]`), prefer release binaries or:
```sh
cargo install dcr --features archive
```
## From source
```sh
git clone https://github.com/dexoron/dcr.git
cd dcr
cargo build --release --features archive
ln -sf "$PWD/target/release/dcr" ~/.local/bin/dcr
# or manage versions with dcrup install night / --build
```
## Post-install
```bash
dcr --version
dcrup show # if installed via dcrup
```
Man pages (package installs / release assets):
```bash
man dcr
man dcr-build
```
Registry (optional) — `~/.dcr/config.toml`:
```toml
[registry.default]
url = "https://index.dcr.pm"
priority = 1
```

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