112 Commits

Author SHA1 Message Date
2f2c4aa208 New translations test-framework.mdx (Ukrainian)
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2026-07-07 11:22:40 +08:00
87bad94848 New translations test-framework.mdx (Russian)
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39bba3cea8 New translations test-framework.mdx (Polish)
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d498e67782 New translations test-framework.mdx (German)
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82de72ce8d New translations running-tests.mdx (Ukrainian)
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ffaf1f1dd1 New translations running-tests.mdx (Russian)
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c050ffb8c4 New translations running-tests.mdx (Polish)
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e9908f359d New translations running-tests.mdx (German)
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024bbfcaa9 New translations self-update.mdx (Ukrainian)
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4b8d78dac7 New translations self-update.mdx (Russian)
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50a2c59fed New translations self-update.mdx (Polish)
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184c44902c New translations self-update.mdx (German)
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44cb4f3665 New translations workspaces.mdx (Ukrainian)
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98fc25c40d New translations workspaces.mdx (Russian)
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fc968d07bd New translations workspaces.mdx (Polish)
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ba20bf7d3d New translations workspaces.mdx (German)
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787e89f779 New translations platform-support.mdx (Ukrainian)
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a67729a673 New translations platform-support.mdx (Russian)
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25cc7b8f3b New translations platform-support.mdx (Polish)
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bddbc3603a New translations platform-support.mdx (German)
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666794d33d New translations environment-variables.mdx (Ukrainian)
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e35f5e0ad1 New translations environment-variables.mdx (Russian)
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4ce4632a92 New translations environment-variables.mdx (Polish)
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aaa6c99795 New translations environment-variables.mdx (German)
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fe6ac220e6 New translations dependencies.mdx (Ukrainian)
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6622353ff8 New translations dependencies.mdx (Russian)
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b3f14d1e68 New translations dependencies.mdx (Polish)
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4cb8985bfb New translations dependencies.mdx (German)
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95bb204884 New translations dcr-toml.mdx (Ukrainian)
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bebda1fe8a New translations dcr-toml.mdx (Russian)
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f0e587b12b New translations dcr-toml.mdx (Polish)
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476f13676a New translations dcr-toml.mdx (German)
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fcf21b2b2e New translations cross-compilation.mdx (Ukrainian)
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cb519cc4fd New translations cross-compilation.mdx (Russian)
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32911212e8 New translations cross-compilation.mdx (Polish)
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3f506e79af New translations cross-compilation.mdx (German)
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fc657b8a99 New translations build-system.mdx (Ukrainian)
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462c53d93f New translations build-system.mdx (Russian)
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c9ff114b25 New translations build-system.mdx (Polish)
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746a26bae9 New translations build-system.mdx (German)
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b6b171b2a9 New translations build-profiles.mdx (Ukrainian)
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a1ccaebfd3 New translations build-profiles.mdx (Russian)
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a15470e669 New translations build-profiles.mdx (Polish)
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901ea9ebaa New translations build-profiles.mdx (German)
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75cf0af9b4 New translations multi-package-workspace.mdx (Ukrainian)
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54f5f78e2c New translations multi-package-workspace.mdx (Russian)
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bb27b4e2e6 New translations multi-package-workspace.mdx (Polish)
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9d9422b45b New translations multi-package-workspace.mdx (German)
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b37aa2a380 New translations library-project.mdx (Ukrainian)
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af96ba2ac2 New translations library-project.mdx (Russian)
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2d73d07923 New translations library-project.mdx (Polish)
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d193dc1314 New translations library-project.mdx (German)
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8ddf4c3fb9 New translations cross-to-windows.mdx (Ukrainian)
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f7c0a50e0e New translations cross-to-windows.mdx (Russian)
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f4748173f9 New translations cross-to-windows.mdx (Polish)
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1ed2cd9a71 New translations cross-to-windows.mdx (German)
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d77fcf6b29 New translations license.mdx (Ukrainian)
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458cda2da2 New translations license.mdx (Russian)
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af9b67edec New translations license.mdx (Polish)
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72654896c0 New translations license.mdx (German)
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82a2b38132 New translations ide-integration.mdx (Ukrainian)
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c936c03fbf New translations ide-integration.mdx (Russian)
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0fecd4c2b7 New translations ide-integration.mdx (Polish)
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1e6a1ae9c1 New translations ide-integration.mdx (German)
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813354c5da New translations installation.mdx (Ukrainian)
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a02f302c48 New translations installation.mdx (Russian)
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a1d2d41fb0 New translations installation.mdx (Polish)
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c11c1a83df New translations installation.mdx (German)
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98db98d353 New translations first-steps.mdx (Ukrainian)
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6c326c21d4 New translations first-steps.mdx (Russian)
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2e895619bf New translations first-steps.mdx (Polish)
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03146c2857 New translations first-steps.mdx (German)
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6c1e041037 New translations faq.mdx (Ukrainian)
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fc545c6af9 New translations faq.mdx (Russian)
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4e2688d66f New translations faq.mdx (Polish)
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12f4177a91 New translations contributing.mdx (Ukrainian)
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84eb7c0c52 New translations contributing.mdx (Russian)
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ce643077b3 New translations contributing.mdx (Polish)
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42312e10bb New translations system-commands.mdx (Ukrainian)
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4c40e74dbb New translations system-commands.mdx (Polish)
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8aa350629c New translations system-commands.mdx (German)
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49d63a1ea1 New translations quality-commands.mdx (Ukrainian)
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ab0ad58925 New translations quality-commands.mdx (Polish)
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f5b465446c New translations quality-commands.mdx (German)
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f4124ea268 New translations project-commands.mdx (Ukrainian)
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d10358bdab New translations project-commands.mdx (Russian)
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fd5150f3db New translations project-commands.mdx (Polish)
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82e10cc75d New translations project-commands.mdx (German)
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b7c9edb35e New translations gen-commands.mdx (Ukrainian)
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548808a8d8 New translations gen-commands.mdx (Polish)
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dcb8e676f1 New translations gen-commands.mdx (German)
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1b0ee1402a New translations dependency-commands.mdx (Ukrainian)
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6c6fa8d5d4 New translations dependency-commands.mdx (Russian)
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c2c3a7bd7a New translations dependency-commands.mdx (Polish)
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801a164da9 New translations build-commands.mdx (Ukrainian)
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312af43702 New translations build-commands.mdx (Polish)
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0af619907a New translations changelog.mdx (Ukrainian)
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171 changed files with 10181 additions and 4678 deletions

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# Changelog
## [0.8.1] - 2026-07-20 "OS-Dev: flat-bin, FAT-образы / OS-Dev: flat-bin & FAT Images"
### RU
**Добавлено:**
- **`build.kind = "flat-bin"`** — сырой бинарный артефакт (расширение по умолчанию `.bin`):
- **NASM** — `-f bin`, прямой вывод `<stem>.bin`
- **FASM** — прямой вывод (ожидается `format binary` в исходнике)
- **GAS / MASM / LLVM IR (`llc`)** — объект → `objcopy -O binary` → `<stem>.bin`
- **C/C++ (gcc/clang/MSVC)** — compile → link (nostdlib/static) → `objcopy -O binary` → `<name>.bin`
- Требуется `llvm-objcopy` / `objcopy` / `gobjcopy` в PATH (кроме NASM/FASM direct)
- **Секция `[archive]`** — после успешной сборки DCR собирает образ диска (FAT12/16/32 через `fatfs`): размер, offset, volume label, опциональный bootsector (512 байт в начало при `offset = 0`) и `layout` (копирование файлов/glob в FS). Плейсхолдер `{profile}` в путях.
- **Одиночные файлы в `build.roots`** — корень может быть файлом (`.c`, `.asm`, header), а не только каталогом; то же для сбора заголовков в cache.
**Изменено:**
- **`dcr build --force` / `dcr run --force`** — force также перезапускает `build.steps` и `build.post_steps`.
- **`dcr run` на workspace-only root** — если задан `[run].cmd`, сначала build + run по конфигу корня; иначе делегирование члену workspace (как в 0.8.0).
**Зависимости:**
- `fatfs = "0.3"` для упаковки FAT-образов.
### EN
**Added:**
- **`build.kind = "flat-bin"`** — raw binary artifact (default extension `.bin`):
- **NASM** — `-f bin`, direct `<stem>.bin`
- **FASM** — direct output (`format binary` in source)
- **GAS / MASM / LLVM IR (`llc`)** — object → `objcopy -O binary` → `<stem>.bin`
- **C/C++ (gcc/clang/MSVC)** — compile → link (`-nostdlib -static`) → `objcopy -O binary` → `<name>.bin`
- Needs `llvm-objcopy` / `objcopy` / `gobjcopy` in PATH (except NASM/FASM direct)
- **`[archive]` section** — after a successful build, pack a disk image (FAT12/16/32 via `fatfs`): size, offset, volume label, optional bootsector (512 bytes at start when `offset = 0`), and `layout` (file/glob copy into the FS). `{profile}` substitution in paths.
- **Single-file `build.roots`** — a root may be a file (`.c`, `.asm`, header), not only a directory; header collection in the cache follows the same rule.
**Changed:**
- **`dcr build --force` / `dcr run --force`** — force also re-runs `build.steps` and `build.post_steps`.
- **`dcr run` on a workspace-only root** — if `[run].cmd` is set, build + run that command first; otherwise fall back to workspace member delegation (0.8.0 behavior).
**Dependencies:**
- `fatfs = "0.3"` for FAT image packing.
## [0.8.0] - 2026-07-18 "Модульный Движок Сборки, Новая Архитектура Ядра и Улучшение Workspaces / Modular Build Engine, New Core Architecture, & Workspace Improvements"
### RU
**Добавлено:**
- **Выделенное ядро сборки (Build Engine extraction)** — вся логика оркестрации компиляции и сборки полностью вынесена из интерфейсного модуля `src/cli/build.rs` в изолированный, переиспользуемый модуль ядра `src/core/build/engine.rs`.
- **Полиморфная модель языков (Трейт `Language`)** — введение абстрактного трейта `Language` (`src/core/build/language/mod.rs`). Логика поиска файлов, сопоставления расширений и компиляторов распределена по выделенным языковым бэкендам для C, C++ (включая шаги генерации Qt), LLVM IR и ассемблера (GAS, NASM, FASM, MASM).
- **Абстракция сборщиков (Трейт `Builder`)** — введение трейта `Builder` для полиморфного управления процессами компиляции (`src/core/build/builder/mod.rs`). Логика вызова компиляторов семейства GCC/Clang вынесена в общий модуль `builder/cc_common.rs`, а MSVC — в `builder/msvc/`.
- **Поязыковая конфигурация (`[build.<lang>]`)** — добавлена поддержка индивидуальных настроек для каждого языка в `dcr.toml` (например, `[build.c]`, `[build.cpp]`, `[build.asm]`), позволяя независимо настраивать компилятор, стандарт и флаги сборки.
- **Интеграция путей зависимостей в Workspaces** — сборщик теперь автоматически инжектирует пути заголовков (включая исходники `src/` членов, папки `include/` и директорию `target/include`) и библиотек (`target/lib`, а также специфичные для целевой платформы папки сборки) зависимых членов workspace при сборке.
- **Система событий `BuildReporter`** — весь вывод сборщика переведён на событийную модель (`src/core/build/report.rs`), что делает движок пригодным для программного встраивания (например, в IDE) без необходимости перехвата stdout/stderr.
- **Поддержка отмены сборки** — добавлен потокобезопасный токен отмены (`Arc<AtomicBool>`), позволяющий безопасно прервать выполнение компиляции на любом этапе.
- **Сохранение кастомных ключей TOML** — парсер `dcr.toml` переведен на `toml_edit`, что гарантирует сохранение всех неизвестных/пользовательских ключей, комментариев и форматирования при перезаписи файла (например, через `dcr add`).
- **Разрешение заголовков для локальных path-зависимостей** — исправлена проблема, при которой потребители не могли найти заголовочные файлы статических/динамических библиотек, лежащие в упакованной папке `target/include` локальных path-зависимостей.
- **Новая система интеграционных тестов** — старый громоздкий файл `tests/cli_basic.rs` разделен на изолированные и структурированные интеграционные тесты для каждой команды и фичи: `cli_build.rs`, `cli_deps.rs`, `cli_lint.rs`, `cli_new.rs`, `cli_qt.rs`, `cli_test.rs`, `cli_workspace.rs`.
**Изменено:**
- **Дедупликация генерации артефактов** — логика линковки бинарных файлов (ELF, PE, EXE), динамических библиотек (`.so`, `.dll`, `.dylib`) и архивации статических библиотек (`.a`, `.lib`) полностью перенесена в выделенный модуль `src/core/build/builder/artifact.rs`.
- **Запуск членов workspace из корня** — команда `dcr run` при вызове из корня workspace-only проекта теперь запускает сборку выбранного пакета в контексте workspace (через флаг `--workspace`), исключая изолированные ошибки сборки.
- **Отказ от глобального состояния** — все операции сборки изолированы внутри структуры `BuildContext`, обеспечивая многопоточную безопасность сборщика.
- **Вынос логики кэширования** — проверка инкрементальных изменений, отслеживание заголовков (`#include`) и вычисление хэшей сборки перенесено в изолированный модуль `src/core/build/cache.rs`.
- **Модуляризация кастомных шагов** — обработка этапа `build.steps` для препроцессоров вынесена в `src/core/build/steps.rs`.
### EN
**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.cpp]`, `[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 "Qt Поддержка, Linting и Рефакторинг Архитектуры / Qt Support, Linting, & Architecture Refactor"
### RU

319
Cargo.lock generated
View File

@@ -2,39 +2,18 @@
# It is not intended for manual editing.
version = 4
[[package]]
name = "android_system_properties"
version = "0.1.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "819e7219dbd41043ac279b19830f2efc897156490d7fd6ea916720117ee66311"
dependencies = [
"libc",
]
[[package]]
name = "anyhow"
version = "1.0.102"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7f202df86484c868dbad7eaa557ef785d5c66295e41b460ef922eca0723b842c"
[[package]]
name = "autocfg"
version = "1.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f2032f911046de80f0a198e0901378627c33f59ea0ac00e363d481118bd70a53"
[[package]]
name = "base64"
version = "0.22.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
[[package]]
name = "bitflags"
version = "1.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
[[package]]
name = "bitflags"
version = "2.11.1"
@@ -59,28 +38,6 @@ dependencies = [
"objc2",
]
[[package]]
name = "bumpalo"
version = "3.20.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "72f5acc6cb2ba439de613abc23857ec3d78374d8ed5ac84e9d11336e87da8649"
[[package]]
name = "byteorder"
version = "1.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
[[package]]
name = "cc"
version = "1.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "c89588d05638b5b4594a3348a2d6c20277e43a7f5c5202b05cc56888475a47b8"
dependencies = [
"find-msvc-tools",
"shlex",
]
[[package]]
name = "cfg-if"
version = "1.0.4"
@@ -93,19 +50,6 @@ version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "613afe47fcd5fac7ccf1db93babcb082c5994d996f20b8b159f2ad1658eb5724"
[[package]]
name = "chrono"
version = "0.4.45"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1aa79e62e7697b8e29b513a68abacf485adcd1fe8284a4316c5ae868e6633327"
dependencies = [
"iana-time-zone",
"js-sys",
"num-traits",
"wasm-bindgen",
"windows-link",
]
[[package]]
name = "core-foundation"
version = "0.9.4"
@@ -154,17 +98,15 @@ dependencies = [
[[package]]
name = "dcr"
version = "0.8.1"
version = "0.7.4"
dependencies = [
"ctrlc",
"fatfs",
"glob",
"self-replace",
"serde",
"serde_json",
"sha2",
"toml",
"toml_edit",
"ureq",
]
@@ -184,7 +126,7 @@ version = "0.3.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1e0e367e4e7da84520dedcac1901e4da967309406d1e51017ae1abfb97adbd38"
dependencies = [
"bitflags 2.11.1",
"bitflags",
"block2",
"libc",
"objc2",
@@ -223,24 +165,6 @@ version = "2.4.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9f1f227452a390804cdb637b74a86990f2a7d7ba4b7d5693aac9b4dd6defd8d6"
[[package]]
name = "fatfs"
version = "0.3.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "05669f8e7e2d7badc545c513710f0eba09c2fbef683eb859fd79c46c355048e0"
dependencies = [
"bitflags 1.3.2",
"byteorder",
"chrono",
"log",
]
[[package]]
name = "find-msvc-tools"
version = "0.1.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5baebc0774151f905a1a2cc41989300b1e6fbb29aff0ceffa1064fdd3088d582"
[[package]]
name = "foldhash"
version = "0.1.5"
@@ -256,30 +180,6 @@ dependencies = [
"percent-encoding",
]
[[package]]
name = "futures-core"
version = "0.3.33"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2cd50c473c80f6d7c3670a752354b8e569b1a7cbfdc0419ec88e5edad85e0dc7"
[[package]]
name = "futures-task"
version = "0.3.33"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b231ed28831efb4a61a08580c4bc233ec56bc009f4cd8f52da2c3cb97df0c109"
[[package]]
name = "futures-util"
version = "0.3.33"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a77a90a256fce34da66415271e30f94ee91c57b04b8a2c042d9cf3220179deaa"
dependencies = [
"futures-core",
"futures-task",
"pin-project-lite",
"slab",
]
[[package]]
name = "generic-array"
version = "0.14.7"
@@ -330,30 +230,6 @@ version = "0.5.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
[[package]]
name = "iana-time-zone"
version = "0.1.65"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e31bc9ad994ba00e440a8aa5c9ef0ec67d5cb5e5cb0cc7f8b744a35b389cc470"
dependencies = [
"android_system_properties",
"core-foundation-sys",
"iana-time-zone-haiku",
"js-sys",
"log",
"wasm-bindgen",
"windows-core",
]
[[package]]
name = "iana-time-zone-haiku"
version = "0.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f31827a206f56af32e590ba56d5d2d085f558508192593743f16b2306495269f"
dependencies = [
"cc",
]
[[package]]
name = "icu_collections"
version = "2.2.0"
@@ -481,17 +357,6 @@ version = "1.0.18"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
[[package]]
name = "js-sys"
version = "0.3.103"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "53b44bfcdb3f8d5837a46dae1ca9660a837176eee74a28b229bc626816589102"
dependencies = [
"cfg-if",
"futures-util",
"wasm-bindgen",
]
[[package]]
name = "leb128fmt"
version = "0.1.0"
@@ -534,21 +399,12 @@ version = "0.31.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "cf20d2fde8ff38632c426f1165ed7436270b44f199fc55284c38276f9db47c3d"
dependencies = [
"bitflags 2.11.1",
"bitflags",
"cfg-if",
"cfg_aliases",
"libc",
]
[[package]]
name = "num-traits"
version = "0.2.19"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
dependencies = [
"autocfg",
]
[[package]]
name = "objc2"
version = "0.6.4"
@@ -582,12 +438,6 @@ version = "2.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9b4f627cb1b25917193a259e49bdad08f671f8d9708acfd5fe0a8c1455d87220"
[[package]]
name = "pin-project-lite"
version = "0.2.17"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a89322df9ebe1c1578d689c92318e070967d1042b512afbe49518723f4e6d5cd"
[[package]]
name = "potential_utf"
version = "0.1.5"
@@ -637,7 +487,7 @@ version = "1.1.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b6fe4565b9518b83ef4f91bb47ce29620ca828bd32cb7e408f0062e9930ba190"
dependencies = [
"bitflags 2.11.1",
"bitflags",
"errno",
"libc",
"linux-raw-sys",
@@ -675,12 +525,6 @@ dependencies = [
"zeroize",
]
[[package]]
name = "rustversion"
version = "1.0.23"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "cf54715a573b99ac80df0bc206da022bcd442c974952c7b9720069370852e21f"
[[package]]
name = "schannel"
version = "0.1.29"
@@ -696,7 +540,7 @@ version = "2.11.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "897b2245f0b511c87893af39b033e5ca9cce68824c4d7e7630b5a1d339658d02"
dependencies = [
"bitflags 2.11.1",
"bitflags",
"core-foundation",
"core-foundation-sys",
"libc",
@@ -793,18 +637,6 @@ dependencies = [
"digest",
]
[[package]]
name = "shlex"
version = "2.0.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f8fadd59c855ef2080decdef8ff161eb6661b86933c9d82e5ba29dc602a55aba"
[[package]]
name = "slab"
version = "0.4.12"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0c790de23124f9ab44544d7ac05d60440adc586479ce501c1d6d7da3cd8c9cf5"
[[package]]
name = "smallvec"
version = "1.15.1"
@@ -871,18 +703,12 @@ dependencies = [
"indexmap",
"serde_core",
"serde_spanned",
"toml_datetime 1.1.1+spec-1.1.0",
"toml_datetime",
"toml_parser",
"toml_writer",
"winnow 1.0.3",
"winnow",
]
[[package]]
name = "toml_datetime"
version = "0.6.11"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "22cddaf88f4fbc13c51aebbf5f8eceb5c7c5a9da2ac40a13519eb5b0a0e8f11c"
[[package]]
name = "toml_datetime"
version = "1.1.1+spec-1.1.0"
@@ -892,33 +718,15 @@ dependencies = [
"serde_core",
]
[[package]]
name = "toml_edit"
version = "0.22.27"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "41fe8c660ae4257887cf66394862d21dbca4a6ddd26f04a3560410406a2f819a"
dependencies = [
"indexmap",
"toml_datetime 0.6.11",
"toml_write",
"winnow 0.7.15",
]
[[package]]
name = "toml_parser"
version = "1.1.2+spec-1.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a2abe9b86193656635d2411dc43050282ca48aa31c2451210f4202550afb7526"
dependencies = [
"winnow 1.0.3",
"winnow",
]
[[package]]
name = "toml_write"
version = "0.1.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5d99f8c9a7727884afe522e9bd5edbfc91a3312b36a77b5fb8926e4c31a41801"
[[package]]
name = "toml_writer"
version = "1.1.1+spec-1.1.0"
@@ -1000,51 +808,6 @@ dependencies = [
"wit-bindgen 0.51.0",
]
[[package]]
name = "wasm-bindgen"
version = "0.2.126"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4b067c0c11094aef6b7a801c1e34a26affafdf3d051dba08456b868789aaf9a4"
dependencies = [
"cfg-if",
"once_cell",
"rustversion",
"wasm-bindgen-macro",
"wasm-bindgen-shared",
]
[[package]]
name = "wasm-bindgen-macro"
version = "0.2.126"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "167ce5e579f6bcf889c4f7175a8a5a585de84e8ff93976ce393efa5f2837aab1"
dependencies = [
"quote",
"wasm-bindgen-macro-support",
]
[[package]]
name = "wasm-bindgen-macro-support"
version = "0.2.126"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f3997c7839262f4ef12cf90b818d6340c18e80f263f1a94bf157d0ec4420380e"
dependencies = [
"bumpalo",
"proc-macro2",
"quote",
"syn",
"wasm-bindgen-shared",
]
[[package]]
name = "wasm-bindgen-shared"
version = "0.2.126"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "dc1b4cb0cc549fcf58d7dfc081778139b3d283a081644e833e84682ad71cea24"
dependencies = [
"unicode-ident",
]
[[package]]
name = "wasm-encoder"
version = "0.244.0"
@@ -1073,71 +836,18 @@ version = "0.244.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "47b807c72e1bac69382b3a6fb3dbe8ea4c0ed87ff5629b8685ae6b9a611028fe"
dependencies = [
"bitflags 2.11.1",
"bitflags",
"hashbrown 0.15.5",
"indexmap",
"semver",
]
[[package]]
name = "windows-core"
version = "0.62.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b8e83a14d34d0623b51dce9581199302a221863196a1dde71a7663a4c2be9deb"
dependencies = [
"windows-implement",
"windows-interface",
"windows-link",
"windows-result",
"windows-strings",
]
[[package]]
name = "windows-implement"
version = "0.60.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "windows-interface"
version = "0.59.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
dependencies = [
"proc-macro2",
"quote",
"syn",
]
[[package]]
name = "windows-link"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"
[[package]]
name = "windows-result"
version = "0.4.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7781fa89eaf60850ac3d2da7af8e5242a5ea78d1a11c49bf2910bb5a73853eb5"
dependencies = [
"windows-link",
]
[[package]]
name = "windows-strings"
version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7837d08f69c77cf6b07689544538e017c1bfcf57e34b4c0ff58e6c2cd3b37091"
dependencies = [
"windows-link",
]
[[package]]
name = "windows-sys"
version = "0.52.0"
@@ -1220,15 +930,6 @@ version = "0.52.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "589f6da84c646204747d1270a2a5661ea66ed1cced2631d546fdfb155959f9ec"
[[package]]
name = "winnow"
version = "0.7.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "df79d97927682d2fd8adb29682d1140b343be4ac0f08fd68b7765d9c059d3945"
dependencies = [
"memchr",
]
[[package]]
name = "winnow"
version = "1.0.3"
@@ -1299,7 +1000,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9d66ea20e9553b30172b5e831994e35fbde2d165325bec84fc43dbf6f4eb9cb2"
dependencies = [
"anyhow",
"bitflags 2.11.1",
"bitflags",
"indexmap",
"log",
"serde",

View File

@@ -1,6 +1,6 @@
[package]
name = "dcr"
version = "0.8.1"
version = "0.7.4"
edition = "2024"
build = "build.rs"
description = "DCR is a utility for managing C/C++ projects in a Cargo-like style."
@@ -66,10 +66,8 @@ serde = { version = "1", features = ["derive"] }
self-replace = "1"
sha2 = "0.10"
toml = "1.0.3"
toml_edit = "0.22"
serde_json = "1"
ctrlc = "3"
fatfs = "0.3"
[profile.release]
opt-level = "z"

View File

@@ -23,8 +23,8 @@ Priority list of tasks to turn DCR into a true Cargo killer for C/C++ developers
- [ ] **Static analysis** (`dcr check`)
Integration with clang-tidy, cppcheck, include-what-you-use
- [x] **Linter + Formatter** (`dcr fmt`, `dcr lint`)
*`dcr fmt` (clang-format) and `dcr lint` (clang-tidy) are implemented*
- [-] **Linter + Formatter** (`dcr fmt`, `dcr lint`)
*`dcr fmt` (clang-format) implemented; `dcr lint` does not exist yet*
- [ ] **Hot reload / Live reload** for applications (raylib, SFML, SDL, etc.)
- [-] **Workspaces improvements** Per-member include directories, selective builds, better dependency graph
*Basic workspaces with dep ordering + topological sort work; advanced features missing*

View File

@@ -0,0 +1,63 @@
---
sidebar_label: Introduction
---
# DCR — C/C++ Build Tool & Package Manager
<details>
<summary>Quick reference</summary>
```bash
# Installation
curl -fsSL https://dcr.dexoron.su/install.sh | sh
# 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
* **4 backends** — gcc/clang, MSVC/clang-cl, GAS (ARM), NASM (x86)
* **7 project kinds** — bin, staticlib, sharedlib, efi, elf, none, custom
* **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`

View File

@@ -0,0 +1,91 @@
---
sidebar_label: Changelog
---
# Changelog
## 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
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).
## `dcr run`
Builds (if sources are newer than artifacts) and runs the binary.
```bash
dcr run
dcr run --release
```
## `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.
## `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
```
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
mkdir app && cd app
dcr init
```
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]]
name = "default"
url = "https://index.dcr.pm"
```
## `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
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:
* `cargo fmt --check`
* `cargo clippy --all-targets -- -D warnings`
* `cargo test --all-targets`
* Build on Linux, macOS, Windows
* Integration tests

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---
sidebar_label: FAQ
---
# FAQ
## Registry not found
```
error: registry not found
```
**Solution:** Make sure `~/.dcr/config.toml` exists:
```toml
[[registry]]
name = "default"
url = "https://index.dcr.pm"
```
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`.
## openssl-sys build failed
When building DCR from source:
```
error: failed to run custom build command for openssl-sys
```
**Solution:** Install OpenSSL development headers:
```bash
# Ubuntu/Debian
sudo apt install libssl-dev
# Fedora
sudo dnf install openssl-devel
# macOS
brew install openssl
```
## 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).
## 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
```

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---
sidebar_label: Installation
---
# Installation
## Linux (Dexoron Packages)
Configure your package manager at https://pkg.dexoron.su and install:
**Arch Linux**
```sh
sudo pacman -Sy dcr
```
**Debian/Ubuntu**
```sh
sudo apt update && sudo apt install dcr
```
**Fedora/RHEL**
```sh
sudo dnf install dcr
```
## 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
```
## Nix (flake)
```sh
nix run github:dexoron/dcr
# or install to profile:
nix profile install github:dexoron/dcr
```
## Cargo (crates.io)
```sh
cargo install dcr
```
## Linux / macOS (script)
```sh
curl -fsSL https://dcr.dexoron.su/install.sh | sh
```
## BSD (script)
```sh
curl -fsSL https://dcr.dexoron.su/install_bsd.sh | sh
```
## Windows (PowerShell)
```powershell
irm https://dcr.dexoron.su/install.ps1 | iex
```
## From source
```sh
git clone https://github.com/dexoron/dcr.git
cd dcr && cargo build --release
ln -sf "$PWD/target/release/dcr" ~/.local/bin/dcr
```
## Post-install
Verify the installation:
```bash
dcr --version
```
Man pages are available after installation:
```bash
man dcr
man dcr-build
```
To use the registry, create `~/.dcr/config.toml`:
```toml
[[registry]]
name = "default"
url = "https://index.dcr.pm"
```

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---
sidebar_label: IDE Integration
---
# IDE Integration
## VS Code
```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.
## Vendored libraries
DCR statically links the following C libraries through its vendored Rust dependencies:
| Library | License | Bundled by |
| ------------------------------------------ | ------------------ | ----------------------------- |
| [libgit2](https://libgit2.org) | MIT OR Apache-2.0 | `git2` / `libgit2-sys` |
| [libssh2](https://libssh2.org) | MIT OR Apache-2.0 | `libgit2-sys` |
| [zlib](https://zlib.net) | MIT OR Apache-2.0 | `libgit2-sys` |
| [OpenSSL](https://openssl.org) | Apache-2.0 | `openssl-sys` / `openssl-src` |
| [ring](https://github.com/briansmith/ring) | Apache-2.0 AND ISC | `rustls` |
## Rust dependencies
DCR is written in Rust. The following notable Rust crates are statically linked:
| Crate | License |
| --------------------------------------------- | ------------------------ |
| [`reqwest`](https://crates.io/crates/reqwest) | MIT OR Apache-2.0 |
| [`rustls`](https://crates.io/crates/rustls) | Apache-2.0 OR ISC OR MIT |
| [`serde`](https://crates.io/crates/serde) | MIT OR Apache-2.0 |
| [`toml`](https://crates.io/crates/toml) | MIT OR Apache-2.0 |
| [`sha2`](https://crates.io/crates/sha2) | MIT OR Apache-2.0 |
| [`git2`](https://crates.io/crates/git2) | MIT OR Apache-2.0 |
| [`openssl`](https://crates.io/crates/openssl) | Apache-2.0 |
| [`tokio`](https://crates.io/crates/tokio) | MIT |
| [`hyper`](https://crates.io/crates/hyper) | MIT |
| [`ctrlc`](https://crates.io/crates/ctrlc) | MIT OR Apache-2.0 |
Full dependency tree (143 packages) 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.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: 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)
* 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>` |
## 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
On Linux with explicit target:
```
target/<triple>/<profile>/
```
On macOS/Windows or without target:
```
target/<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
```
## [package]
| Field | Required | Description |
| --------- | -------- | ----------------------- |
| `name` | yes | Project name |
| `version` | yes | Semantic version |
| `type` | yes | `app`, `lib`, `none` |
| `license` | no | SPDX license identifier |
| `author` | no | Author |
```toml
[package]
name = "my-app"
version = "0.1.0"
type = "app"
license = "MIT"
author = "John Doe"
```
## [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"` |
| `standard` | `"c11"` | C standard (`c11`, `c17`, `c23`) |
| `cxx_standard` | `"c++20"` | C++ standard (`c++17`, `c++20`, `c++23`) |
| `compiler` | `"clang"` | Preferred compiler |
| `kind` | `"bin"` | `bin`, `staticlib`, `sharedlib`, `efi`, `elf`, `none`, `custom` |
| `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 |
| `roots` | `["src"]` | Source root directories |
| `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 |
| `freestanding` | `false` | Compile in freestanding mode (`-ffreestanding` + `-nostdlib -static`) |
| `opt_level` | `"0"` (debug) / `"3"` (release) | Optimization level: `0`-`3`, `"s"`, `"z"` |
| `debug` | `true` (debug) / `false` (release) | Emit debug symbols (`-g`) |
| `lto` | `false` | Link-time optimization (`-flto` for both compiler and linker) |
| `strip` | `false` | Strip symbols from output (`-s` in ldflags) |
| `warnings` | `["all", "extra"]` (debug) / `[]` (release) | Warning flags (e.g. `"all"`, `"extra"`, `"pedantic"`) |
| `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
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).

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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]
fmt = { git = "https://github.com/fmtlib/fmt", tag = "10.1.1" }
```
Fields: `git`, `branch`, `tag`, `rev`.
### Table (path)
```toml
[dependencies]
mylib = { path = "../mylib" }
```
## Registry
DCR uses a package registry for dependency lookup by name.
```toml
# ~/.dcr/config.toml
[[registry]]
name = "default"
url = "https://index.dcr.pm"
```
Registry priority: order in `config.toml`. The `DCR_INDEX_PATH` variable overrides the path to `index.json`.
## Git dependencies
DCR clones git repositories via `git2`:
* `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)
Cache path: `~/.dcr/git/\<hash>/`.
## Path dependencies
Local paths. DCR automatically discovers include and lib directories from the neighbor's `dcr.toml`.
```toml
[dependencies]
mylib = { path = "/abs/path/to/lib" }
mylib = { path = "../relative/path" }
```
## dcr.lock
Dependency lock file. Contains package names and sources.
Created during `dcr build` when registry dependencies are present. Not updated during `dcr add` — only on the next `dcr build`.
## Resolution process
1. Load all dependencies (registry → git → path)
2. For path deps: recursively read their `dcr.toml`
3. For registry deps: search `index.json`
4. For git deps: clone to cache
5. 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`.

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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-gnu/<profile>/
```
Architectures: `x86_64`, `aarch64` (host-detected).
Artifact type: ELF. Extensions: `.so` (sharedlib), `.a` (staticlib).
### macOS
```
target/<profile>/
```
Architectures: `x86_64`, `aarch64` (host-detected).
Extensions: `.dylib` (sharedlib), `.a` (staticlib).
### Windows
```
target/<profile>/
```
Architectures: `x86_64`, `aarch64`.
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, member outputs (libraries) are automatically added to include/lib paths of dependent packages.
## 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
```

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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
curl -fsSL https://dcr.dexoron.su/install.sh | sh
# 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
* **4 backends** — gcc/clang, MSVC/clang-cl, GAS (ARM), NASM (x86)
* **7 project kinds** — bin, staticlib, sharedlib, efi, elf, none, custom
* **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
## 0.7.1 (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
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).
## `dcr run`
Builds (if sources are newer than artifacts) and runs the binary.
```bash
dcr run
dcr run --release
```
## `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.
## `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
```
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
mkdir app && cd app
dcr init
```
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]]
name = "default"
url = "https://index.dcr.pm"
```
## `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
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:
* `cargo fmt --check`
* `cargo clippy --all-targets -- -D warnings`
* `cargo test --all-targets`
* Build on Linux, macOS, Windows
* Integration tests

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---
sidebar_label: FAQ
---
# FAQ
## Registry not found
```
error: registry not found
```
**Solution:** Make sure `~/.dcr/config.toml` exists:
```toml
[[registry]]
name = "default"
url = "https://index.dcr.pm"
```
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`.
## openssl-sys build failed
When building DCR from source:
```
error: failed to run custom build command for openssl-sys
```
**Solution:** Install OpenSSL development headers:
```bash
# Ubuntu/Debian
sudo apt install libssl-dev
# Fedora
sudo dnf install openssl-devel
# macOS
brew install openssl
```
## 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).
## 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
```

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---
sidebar_label: Installation
---
# Installation
## Linux (Dexoron Packages)
Configure your package manager at https://pkg.dexoron.su and install:
**Arch Linux**
```sh
sudo pacman -Sy dcr
```
**Debian/Ubuntu**
```sh
sudo apt update && sudo apt install dcr
```
**Fedora/RHEL**
```sh
sudo dnf install dcr
```
## 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
```
## Nix (flake)
```sh
nix run github:dexoron/dcr
# or install to profile:
nix profile install github:dexoron/dcr
```
## Cargo (crates.io)
```sh
cargo install dcr
```
## Linux / macOS (script)
```sh
curl -fsSL https://dcr.dexoron.su/install.sh | sh
```
## BSD (script)
```sh
curl -fsSL https://dcr.dexoron.su/install_bsd.sh | sh
```
## Windows (PowerShell)
```powershell
irm https://dcr.dexoron.su/install.ps1 | iex
```
## From source
```sh
git clone https://github.com/dexoron/dcr.git
cd dcr && cargo build --release
ln -sf "$PWD/target/release/dcr" ~/.local/bin/dcr
```
## Post-install
Verify the installation:
```bash
dcr --version
```
Man pages are available after installation:
```bash
man dcr
man dcr-build
```
To use the registry, create `~/.dcr/config.toml`:
```toml
[[registry]]
name = "default"
url = "https://index.dcr.pm"
```

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---
sidebar_label: IDE Integration
---
# IDE Integration
## VS Code
```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.
## Vendored libraries
DCR statically links the following C libraries through its vendored Rust dependencies:
| Library | License | Bundled by |
| ------------------------------------------ | ------------------ | ----------------------------- |
| [libgit2](https://libgit2.org) | MIT OR Apache-2.0 | `git2` / `libgit2-sys` |
| [libssh2](https://libssh2.org) | MIT OR Apache-2.0 | `libgit2-sys` |
| [zlib](https://zlib.net) | MIT OR Apache-2.0 | `libgit2-sys` |
| [OpenSSL](https://openssl.org) | Apache-2.0 | `openssl-sys` / `openssl-src` |
| [ring](https://github.com/briansmith/ring) | Apache-2.0 AND ISC | `rustls` |
## Rust dependencies
DCR is written in Rust. The following notable Rust crates are statically linked:
| Crate | License |
| --------------------------------------------- | ------------------------ |
| [`reqwest`](https://crates.io/crates/reqwest) | MIT OR Apache-2.0 |
| [`rustls`](https://crates.io/crates/rustls) | Apache-2.0 OR ISC OR MIT |
| [`serde`](https://crates.io/crates/serde) | MIT OR Apache-2.0 |
| [`toml`](https://crates.io/crates/toml) | MIT OR Apache-2.0 |
| [`sha2`](https://crates.io/crates/sha2) | MIT OR Apache-2.0 |
| [`git2`](https://crates.io/crates/git2) | MIT OR Apache-2.0 |
| [`openssl`](https://crates.io/crates/openssl) | Apache-2.0 |
| [`tokio`](https://crates.io/crates/tokio) | MIT |
| [`hyper`](https://crates.io/crates/hyper) | MIT |
| [`ctrlc`](https://crates.io/crates/ctrlc) | MIT OR Apache-2.0 |
Full dependency tree (143 packages) 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.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: 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)
* 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>` |
## 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
On Linux with explicit target:
```
target/<triple>/<profile>/
```
On macOS/Windows or without target:
```
target/<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
```
## [package]
| Field | Required | Description |
| --------- | -------- | ----------------------- |
| `name` | yes | Project name |
| `version` | yes | Semantic version |
| `type` | yes | `app`, `lib`, `none` |
| `license` | no | SPDX license identifier |
| `author` | no | Author |
```toml
[package]
name = "my-app"
version = "0.1.0"
type = "app"
license = "MIT"
author = "John Doe"
```
## [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"` |
| `standard` | `"c11"` | C standard (`c11`, `c17`, `c23`) |
| `cxx_standard` | `"c++20"` | C++ standard (`c++17`, `c++20`, `c++23`) |
| `compiler` | `"clang"` | Preferred compiler |
| `kind` | `"bin"` | `bin`, `staticlib`, `sharedlib`, `efi`, `elf`, `none`, `custom` |
| `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 |
| `roots` | `["src"]` | Source root directories |
| `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 |
| `freestanding` | `false` | Compile in freestanding mode (`-ffreestanding` + `-nostdlib -static`) |
| `opt_level` | `"0"` (debug) / `"3"` (release) | Optimization level: `0`-`3`, `"s"`, `"z"` |
| `debug` | `true` (debug) / `false` (release) | Emit debug symbols (`-g`) |
| `lto` | `false` | Link-time optimization (`-flto` for both compiler and linker) |
| `strip` | `false` | Strip symbols from output (`-s` in ldflags) |
| `warnings` | `["all", "extra"]` (debug) / `[]` (release) | Warning flags (e.g. `"all"`, `"extra"`, `"pedantic"`) |
| `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
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).

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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]
fmt = { git = "https://github.com/fmtlib/fmt", tag = "10.1.1" }
```
Fields: `git`, `branch`, `tag`, `rev`.
### Table (path)
```toml
[dependencies]
mylib = { path = "../mylib" }
```
## Registry
DCR uses a package registry for dependency lookup by name.
```toml
# ~/.dcr/config.toml
[[registry]]
name = "default"
url = "https://index.dcr.pm"
```
Registry priority: order in `config.toml`. The `DCR_INDEX_PATH` variable overrides the path to `index.json`.
## Git dependencies
DCR clones git repositories via `git2`:
* `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)
Cache path: `~/.dcr/git/\<hash>/`.
## Path dependencies
Local paths. DCR automatically discovers include and lib directories from the neighbor's `dcr.toml`.
```toml
[dependencies]
mylib = { path = "/abs/path/to/lib" }
mylib = { path = "../relative/path" }
```
## dcr.lock
Dependency lock file. Contains package names and sources.
Created during `dcr build` when registry dependencies are present. Not updated during `dcr add` — only on the next `dcr build`.
## Resolution process
1. Load all dependencies (registry → git → path)
2. For path deps: recursively read their `dcr.toml`
3. For registry deps: search `index.json`
4. For git deps: clone to cache
5. 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`.

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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-gnu/<profile>/
```
Architectures: `x86_64`, `aarch64` (host-detected).
Artifact type: ELF. Extensions: `.so` (sharedlib), `.a` (staticlib).
### macOS
```
target/<profile>/
```
Architectures: `x86_64`, `aarch64` (host-detected).
Extensions: `.dylib` (sharedlib), `.a` (staticlib).
### Windows
```
target/<profile>/
```
Architectures: `x86_64`, `aarch64`.
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, member outputs (libraries) are automatically added to include/lib paths of dependent packages.
## 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
```

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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
curl -fsSL https://dcr.dexoron.su/install.sh | sh
# 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
* **4 backends** — gcc/clang, MSVC/clang-cl, GAS (ARM), NASM (x86)
* **7 project kinds** — bin, staticlib, sharedlib, efi, elf, none, custom
* **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
## 0.7.1 (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
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).
## `dcr run`
Builds (if sources are newer than artifacts) and runs the binary.
```bash
dcr run
dcr run --release
```
## `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.
## `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
```
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
mkdir app && cd app
dcr init
```
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]]
name = "default"
url = "https://index.dcr.pm"
```
## `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
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:
* `cargo fmt --check`
* `cargo clippy --all-targets -- -D warnings`
* `cargo test --all-targets`
* Build on Linux, macOS, Windows
* Integration tests

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---
sidebar_label: FAQ
---
# FAQ
## Registry not found
```
error: registry not found
```
**Solution:** Make sure `~/.dcr/config.toml` exists:
```toml
[[registry]]
name = "default"
url = "https://index.dcr.pm"
```
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`.
## openssl-sys build failed
When building DCR from source:
```
error: failed to run custom build command for openssl-sys
```
**Solution:** Install OpenSSL development headers:
```bash
# Ubuntu/Debian
sudo apt install libssl-dev
# Fedora
sudo dnf install openssl-devel
# macOS
brew install openssl
```
## 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).
## 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
```

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---
sidebar_label: Installation
---
# Installation
## Linux (Dexoron Packages)
Configure your package manager at https://pkg.dexoron.su and install:
**Arch Linux**
```sh
sudo pacman -Sy dcr
```
**Debian/Ubuntu**
```sh
sudo apt update && sudo apt install dcr
```
**Fedora/RHEL**
```sh
sudo dnf install dcr
```
## 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
```
## Nix (flake)
```sh
nix run github:dexoron/dcr
# or install to profile:
nix profile install github:dexoron/dcr
```
## Cargo (crates.io)
```sh
cargo install dcr
```
## Linux / macOS (script)
```sh
curl -fsSL https://dcr.dexoron.su/install.sh | sh
```
## BSD (script)
```sh
curl -fsSL https://dcr.dexoron.su/install_bsd.sh | sh
```
## Windows (PowerShell)
```powershell
irm https://dcr.dexoron.su/install.ps1 | iex
```
## From source
```sh
git clone https://github.com/dexoron/dcr.git
cd dcr && cargo build --release
ln -sf "$PWD/target/release/dcr" ~/.local/bin/dcr
```
## Post-install
Verify the installation:
```bash
dcr --version
```
Man pages are available after installation:
```bash
man dcr
man dcr-build
```
To use the registry, create `~/.dcr/config.toml`:
```toml
[[registry]]
name = "default"
url = "https://index.dcr.pm"
```

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---
sidebar_label: IDE Integration
---
# IDE Integration
## VS Code
```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.
## Vendored libraries
DCR statically links the following C libraries through its vendored Rust dependencies:
| Library | License | Bundled by |
| ------------------------------------------ | ------------------ | ----------------------------- |
| [libgit2](https://libgit2.org) | MIT OR Apache-2.0 | `git2` / `libgit2-sys` |
| [libssh2](https://libssh2.org) | MIT OR Apache-2.0 | `libgit2-sys` |
| [zlib](https://zlib.net) | MIT OR Apache-2.0 | `libgit2-sys` |
| [OpenSSL](https://openssl.org) | Apache-2.0 | `openssl-sys` / `openssl-src` |
| [ring](https://github.com/briansmith/ring) | Apache-2.0 AND ISC | `rustls` |
## Rust dependencies
DCR is written in Rust. The following notable Rust crates are statically linked:
| Crate | License |
| --------------------------------------------- | ------------------------ |
| [`reqwest`](https://crates.io/crates/reqwest) | MIT OR Apache-2.0 |
| [`rustls`](https://crates.io/crates/rustls) | Apache-2.0 OR ISC OR MIT |
| [`serde`](https://crates.io/crates/serde) | MIT OR Apache-2.0 |
| [`toml`](https://crates.io/crates/toml) | MIT OR Apache-2.0 |
| [`sha2`](https://crates.io/crates/sha2) | MIT OR Apache-2.0 |
| [`git2`](https://crates.io/crates/git2) | MIT OR Apache-2.0 |
| [`openssl`](https://crates.io/crates/openssl) | Apache-2.0 |
| [`tokio`](https://crates.io/crates/tokio) | MIT |
| [`hyper`](https://crates.io/crates/hyper) | MIT |
| [`ctrlc`](https://crates.io/crates/ctrlc) | MIT OR Apache-2.0 |
Full dependency tree (143 packages) 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.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: 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)
* 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>` |
## 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
On Linux with explicit target:
```
target/<triple>/<profile>/
```
On macOS/Windows or without target:
```
target/<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
```
## [package]
| Field | Required | Description |
| --------- | -------- | ----------------------- |
| `name` | yes | Project name |
| `version` | yes | Semantic version |
| `type` | yes | `app`, `lib`, `none` |
| `license` | no | SPDX license identifier |
| `author` | no | Author |
```toml
[package]
name = "my-app"
version = "0.1.0"
type = "app"
license = "MIT"
author = "John Doe"
```
## [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"` |
| `standard` | `"c11"` | C standard (`c11`, `c17`, `c23`) |
| `cxx_standard` | `"c++20"` | C++ standard (`c++17`, `c++20`, `c++23`) |
| `compiler` | `"clang"` | Preferred compiler |
| `kind` | `"bin"` | `bin`, `staticlib`, `sharedlib`, `efi`, `elf`, `none`, `custom` |
| `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 |
| `roots` | `["src"]` | Source root directories |
| `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 |
| `freestanding` | `false` | Compile in freestanding mode (`-ffreestanding` + `-nostdlib -static`) |
| `opt_level` | `"0"` (debug) / `"3"` (release) | Optimization level: `0`-`3`, `"s"`, `"z"` |
| `debug` | `true` (debug) / `false` (release) | Emit debug symbols (`-g`) |
| `lto` | `false` | Link-time optimization (`-flto` for both compiler and linker) |
| `strip` | `false` | Strip symbols from output (`-s` in ldflags) |
| `warnings` | `["all", "extra"]` (debug) / `[]` (release) | Warning flags (e.g. `"all"`, `"extra"`, `"pedantic"`) |
| `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
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).

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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]
fmt = { git = "https://github.com/fmtlib/fmt", tag = "10.1.1" }
```
Fields: `git`, `branch`, `tag`, `rev`.
### Table (path)
```toml
[dependencies]
mylib = { path = "../mylib" }
```
## Registry
DCR uses a package registry for dependency lookup by name.
```toml
# ~/.dcr/config.toml
[[registry]]
name = "default"
url = "https://index.dcr.pm"
```
Registry priority: order in `config.toml`. The `DCR_INDEX_PATH` variable overrides the path to `index.json`.
## Git dependencies
DCR clones git repositories via `git2`:
* `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)
Cache path: `~/.dcr/git/\<hash>/`.
## Path dependencies
Local paths. DCR automatically discovers include and lib directories from the neighbor's `dcr.toml`.
```toml
[dependencies]
mylib = { path = "/abs/path/to/lib" }
mylib = { path = "../relative/path" }
```
## dcr.lock
Dependency lock file. Contains package names and sources.
Created during `dcr build` when registry dependencies are present. Not updated during `dcr add` — only on the next `dcr build`.
## Resolution process
1. Load all dependencies (registry → git → path)
2. For path deps: recursively read their `dcr.toml`
3. For registry deps: search `index.json`
4. For git deps: clone to cache
5. 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`.

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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-gnu/<profile>/
```
Architectures: `x86_64`, `aarch64` (host-detected).
Artifact type: ELF. Extensions: `.so` (sharedlib), `.a` (staticlib).
### macOS
```
target/<profile>/
```
Architectures: `x86_64`, `aarch64` (host-detected).
Extensions: `.dylib` (sharedlib), `.a` (staticlib).
### Windows
```
target/<profile>/
```
Architectures: `x86_64`, `aarch64`.
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, member outputs (libraries) are automatically added to include/lib paths of dependent packages.
## 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
```

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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
curl -fsSL https://dcr.dexoron.su/install.sh | sh
# 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
* **4 backends** — gcc/clang, MSVC/clang-cl, GAS (ARM), NASM (x86)
* **7 project kinds** — bin, staticlib, sharedlib, efi, elf, none, custom
* **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
## 0.7.1 (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
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).
## `dcr run`
Builds (if sources are newer than artifacts) and runs the binary.
```bash
dcr run
dcr run --release
```
## `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.
## `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
```
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
mkdir app && cd app
dcr init
```
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]]
name = "default"
url = "https://index.dcr.pm"
```
## `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
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:
* `cargo fmt --check`
* `cargo clippy --all-targets -- -D warnings`
* `cargo test --all-targets`
* Build on Linux, macOS, Windows
* Integration tests

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---
sidebar_label: FAQ
---
# FAQ
## Registry not found
```
error: registry not found
```
**Solution:** Make sure `~/.dcr/config.toml` exists:
```toml
[[registry]]
name = "default"
url = "https://index.dcr.pm"
```
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`.
## openssl-sys build failed
When building DCR from source:
```
error: failed to run custom build command for openssl-sys
```
**Solution:** Install OpenSSL development headers:
```bash
# Ubuntu/Debian
sudo apt install libssl-dev
# Fedora
sudo dnf install openssl-devel
# macOS
brew install openssl
```
## 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).
## 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
```

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