style: update code format

- Updated build and run commands to accept a --target option for specifying target platforms.
- Enhanced documentation to include cross-compilation usage and supported targets.
- Modified configuration to allow target-specific settings and toolchains.
- Introduced a new test command to run project tests with specified profiles and targets.
- Improved handling of target directories and output structure for different platforms.
- Added support for multiple targets in the configuration file.
- Implemented inheritance for workspace and dependencies based on target and profile.

CHANGELOG.md

@@ -1,7 +1,47 @@
 # Changelog
 
-## [0.2.10] - 2026-03-16
+## [0.5.0] - 2026-04-10
+
 Added:
+
+- Full inheritance system for all config sections: `build`, `toolchain`, `run`, `workspace`, `dependencies`
+  - Order: `section.target.profile` → `section.profile.target` → `section.target` → `section.profile` → `section`
+  - `inherit = false` to disable inheritance completely
+  - Target-specific overrides: `[build.linux]`, `[toolchain.windows]`, `[run.macos]`, etc.
+- Cross-compilation support with `--target <triple>`
+  - Full target triples and short names (`linux`, `macos`, `windows`)
+  - Target-specific config sections: `[build.<target>]`, `[toolchain.<target>]`, `[run.<target>]`
+- Workspace and dependencies support target/profile inheritance
+- Multiple targets build: `[build.targets]` to build for multiple targets simultaneously
+- Target directory structure: `target/<target>/<profile>/` (native or triple)
+- Updated documentation with cross-compilation guide and Arch Linux examples
+
+## [0.4.0] - 2026-04-10
+
+Added:
+
+- Test command: `dcr test` and `dcr tests`
+  - Automatic compilation and linking for tests without manual configuration
+  - `dcr test --init` creates test template and header
+  - Test framework with EXPECT/SKIP macros in `dcr_test.h`
+- Improved test integration: added test CLI module and basic test suite
+- Documentation updates for testing functionality
+
+## [0.3.0] - 2026-03-18
+
+Added:
+
+- `dcr gen` command for IDE integration and build tool support
+    - `dcr gen project-info`: Output project metadata as JSON
+    - `dcr gen compile-commands`: Generate `compile_commands.json` for clangd and clang-tidy
+    - `dcr gen vscode`: Generate VS Code `.vscode/` integration (launch.json, tasks.json, settings.json)
+    - `dcr gen clion`: Generate JetBrains CLion `.idea/` integration (run configurations, build targets)
+- Full workspace support for all `gen` subcommands
+
+## [0.2.10] - 2026-03-16
+
+Added:
+
 - `build.steps` for pre-build generators (e.g., `moc`/`uic`/`rcc`)
 - `build.pkg_config` for `pkg-config`-driven cflags/ldflags resolution
 - `[toolchain]` support for `uic`, `moc`, `rcc`
@@ -9,20 +49,25 @@ Added:
 - `{profile}` placeholder support for dependency paths
 
 ## [0.2.9] - 2026-03-14
+
 Added:
+
 - Header dependency tracking for fine-grained incremental builds (rebuilds when `#include` files change)
 - Complete internal rewrite of the builder module: merged duplicate compilation backends
 
 Changed:
+
 - `cflags` and `default_flags` no longer incorrectly leak to the linker stage in GCC/Clang
 - Reduced builder codebase size by over 20% while increasing reliability
 - Greatly expanded test suite with 34 new tests covering configuration, CLI errors, and path operations
 
 ## [0.2.8] - 2026-03-06
+
 Added:
+
 - Workspace support (`[workspace]` with deps ordering)
 - `clean --all` for workspace members
-Changed:
+  Changed:
 - Project root discovery for `build/run/clean` (searches parent dirs)
 - Workspace paths are excluded from root source scan
 - Build output now uses a Cargo-style `Compiling <name> v<version>` line
@@ -31,12 +76,16 @@ Changed:
 - Safer build cache: fingerprints include headers and resolved library files
 
 ## [0.2.7] - 2026-03-03
+
 Added:
+
 - Toolchain overrides via `[toolchain]` and env (`DCR_*`)
 - ASM `.S` preprocessing via GCC/Clang (`-x assembler-with-cpp`)
 
 ## [0.2.6] - 2026-03-01
+
 Added:
+
 - `sharedlib` build kind (shared library output)
 - ASM projects (`build.language = "asm"`)
 - NASM and GAS backends
@@ -44,24 +93,31 @@ Added:
 - Basic CLI integration tests
 
 ## [0.2.5] - 2026-02-26
+
 Added:
+
 - Incremental builds (object caching by mtime)
 - `build.kind` with `staticlib` support
 - Custom output directory via `build.target`
 
 ## [0.2.4] - 2026-02-22
+
 Added:
+
 - Custom build flags: `build.cflags` and `build.ldflags`
 - Recursive source discovery inside `src/`
 - Path dependencies with auto include/lib resolution and `dcr.lock` generation (experimental)
 - Add docs/index.md and docs/dcr-toml.md
 
 ## [0.2.3] - 2026-02-21
+
 Added:
+
 - Modular builders for `gcc`, `clang`, `msvc`
 - Platform-specific binary path generation (Linux/macOS/Windows)
 
 Changed:
+
 - Build configuration moved to `[build]` (`language`, `standard`, `compiler`)
 - `dcr.toml` formatting now includes the `[build]` section
 - Build uses built-in `debug/release` flags per compiler
@@ -69,20 +125,26 @@ Changed:
 - Updated `dcr.toml` examples in documentation
 
 ## [0.2.2] - 2026-02-20
+
 Changed:
+
 - Reworked `dcr.toml` handling: added read, validation, and edit through `core::config`
 - `new` and `init` use the new config creation logic
 - `build` and `run` now require `dcr.toml` and read `compiler` and `name` from it
 
 ## [0.2.1] - 2026-02-18
+
 Changed:
+
 - Translated user-facing CLI messages to English
 - Unified error and warning output via `utils::log::{error, warn}`
 - Updated `--help` output: translated headers and examples to English, used `printc`, and applied `BOLD_*` styles
 - Translated installer script messages in `install.sh` and `install.ps1` to English
 
 ## [0.2.0] - 2026-02-17
+
 Changed:
+
 - Project migrated from Python to Rust
 - CLI and commands (`new`, `init`, `build`, `run`, `clean`, `--help`, `--version`, `--update`) ported to Rust
 - Updated `--update` flag: added support for GNU/Linux, Windows, macOS
@@ -91,31 +153,40 @@ Changed:
 - Updated `install.sh` for GNU/Linux and macOS
 
 Added:
+
 - Added `install.ps1` for Windows
 - Support for GNU/Linux, Windows, macOS (x86_64/arm)
 
 Important:
+
 - Code was ported with neural networks; future versions will include bug fixes and logic changes
 
 ## [0.1.2] - 2026-02-12
+
 Added:
+
 - Update command
 - `install.sh` install script and README instructions
 - `--version` flag
 
 Changed:
+
 - Improved CLI output, added colors, and updated `--help`
 - Updated project run/build handling in `run.py`/`build.py`
 
 ## [0.1.1] - 2026-02-11
+
 Changed:
+
 - Updated `--help`
 - `main.py` now runs correctly when executed directly
 
 ## [0.1.0] - 2026-02-11
+
 First public release.
 
 Added:
+
 - Base commands `new`, `init`, `build`, `run`, `clean`
 - Build profiles `debug` and `release`
 - `dcr.toml` and `src/main.c` templates

CONTRIBUTING.md

@@ -22,6 +22,27 @@ cargo check
 - Keep functions small and focused.
 - Prefer clear names over clever ones.
 
+## Target System
+
+DCR supports cross-compilation via `--target <triple>` or short names:
+
+- `dcr build --target linux --release` (maps to `x86_64-unknown-linux-gnu`)
+- `dcr build --target macos --release` (maps to `x86_64-apple-darwin`)
+- `dcr build --target windows --release` (maps to `x86_64-pc-windows-msvc`)
+- Full triples: `dcr build --target aarch64-linux-gnu --release`
+- Configure multiple targets in `dcr.toml`:
+  ```
+  [build.targets]
+  targets = ["linux", "macos"]
+
+  [build.linux]
+  compiler = "gcc"
+
+  [build.macos]
+  compiler = "clang"
+  ```
+- If no `--target`, builds for targets in `build.targets` or native if empty.
+
 ## Checks
 
 Before PR, run:

Cargo.lock

@@ -90,7 +90,7 @@ dependencies = [
 
 [[package]]
 name = "dcr"
-version = "0.2.10"
+version = "0.5.0"
 dependencies = [
  "glob",
  "reqwest",

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "dcr"
-version = "0.2.10"
+version = "0.5.0"
 edition = "2024"
 build = "build.rs"
 

README.md

@@ -14,9 +14,13 @@ The current implementation is written in Rust.
 - Build a project with `debug` and `release` profiles
 - Run the compiled binary
 - Clean build artifacts
+- Generate IDE integration files (VS Code, CLion) and compilation databases
 - Generate a minimal C project template
 - Build static and shared libraries
 - ASM projects with NASM/GAS or via GCC/Clang
+- Mixed language projects (`language = ["c", "asm"]` and similar)
+- Cross-compilation with `--target` (short names: `linux`, `macos`, `windows`)
+- Target-specific configurations and inheritance
 - Update the binary via `dcr --update` (GitHub Releases, not for pacman/AUR installs)
 
 ## Supported Platforms
@@ -104,9 +108,11 @@ Creates a project in the current directory. The project name is taken from the d
 
 ### `dcr build [profile]`
 Builds the project. If no profile is specified, `--debug` is used.
+Use `--force` to rebuild without cache, `--clean` to clean before build.
 
 ### `dcr run [profile]`
 Builds the project and runs the binary. If no profile is specified, `--debug` is used.
+Use `--force` to rebuild without cache, `--clean` to clean before build.
 
 Run manually:
 `./target/<profile>/<name>`
@@ -115,17 +121,59 @@ Run manually:
 Removes the `target` directory in the project root.
 Use `dcr clean --all` in a workspace root to clean all member projects.
 
+### `dcr gen`
+Generates IDE integration files and build tools.
+- `dcr gen vscode`: VS Code workspace config
+- `dcr gen clion`: CLion project files
+- `dcr gen compile-commands`: `compile_commands.json` for clang tools
+
+### `dcr test`
+Runs the test suite.
+Use `dcr test --init` to create test files.
+
 ## Build Profiles
 Two profiles are supported:
 - `--debug` (default) - built-in flags per compiler
 - `--release` - built-in flags per compiler
 
 Custom flags can be added in `dcr.toml` via `build.cflags` and `build.ldflags`.
+Profile-specific flags can be added via `[build.debug]` and `[build.release]`.
 You can also set `build.target` to override the output directory (profile-independent).
 You can set `build.platform` to pass `-march=<platform>` (GCC/Clang) or `/arch:*` (MSVC) where supported.
 Use `build.kind = "staticlib"` to build a static library instead of a binary.
 Use `build.kind = "sharedlib"` to build a shared library (`.so`/`.dylib`/`.dll`).
 `dcr run` is only for `build.kind = "bin"` and will fail for libraries.
+Use `build.exclude`/`build.include` to control source/header collection.
+Use `build.roots` and `build.src_disable` to replace the default `src/` root.
+Use `build.steps` and `build.post_steps` to run custom commands.
+Use `build.clean` for extra cleanup paths and `[run].cmd` to override run command.
+
+## Cross-compilation
+
+DCR supports cross-compilation via `--target <triple>` or short names:
+
+```sh
+dcr build --target linux --release    # x86_64-unknown-linux-gnu
+dcr build --target macos --release    # x86_64-apple-darwin
+dcr build --target windows --release  # x86_64-pc-windows-msvc
+dcr run --target aarch64-linux-gnu
+```
+
+Configure multiple targets and target-specific settings in `dcr.toml`:
+
+```toml
+[build.targets]
+targets = ["linux", "windows"]
+
+[build.linux]
+compiler = "gcc"
+cflags = ["-O2"]
+
+[build.windows]
+compiler = "x86_64-w64-mingw32-gcc"
+```
+
+See [Cross-compilation guide](docs/dependencies-and-build/cross-compilation.md) for details.
 
 ## Configuration
 The main project file is `dcr.toml`.
@@ -146,6 +194,10 @@ compiler = "clang"
 # Optional custom flags
 cflags = ["-Wall", "-Wextra"]
 ldflags = ["-lm"]
+#
+# Optional include/exclude:
+# exclude = ["src/vendor", "src/legacy/**"]
+# include = ["src/boot/arch/**"]
 
 [toolchain]
 # Optional tool overrides:
@@ -154,6 +206,9 @@ ldflags = ["-lm"]
 # as = "as"
 # ar = "ar"
 # ld = "ld"
+# uic = "uic"
+# moc = "moc"
+# rcc = "rcc"
 
 [dependencies]
 ```

docs/README.md

@@ -18,12 +18,19 @@ Current DCR focuses on a simple, predictable workflow:
   - C++: `*.cpp`, `*.cxx`, `*.cc`
 - Compiler selection from `dcr.toml` (`clang`, `gcc`, `cl`, `clang-cl`, etc.).
 - ASM support via `language = "asm"` (GCC/Clang, NASM, GAS).
+- Mixed language builds via `language = ["c", "asm"]` and similar combinations.
 - Three build kinds:
   - `bin` (default)
   - `staticlib`
   - `sharedlib`
 - Optional custom output directory via `build.target`.
 - Optional `build.platform` to pass architecture hints (`-march` / `/arch`).
+- Optional `build.exclude`/`build.include` for source/header selection.
+- Optional `build.roots`/`build.src_disable` to replace the default `src/` root.
+- Optional build steps with `build.steps` and `build.post_steps`.
+- Optional `build.pkg_config` integration.
+- Optional `build.clean` and `build.expect`.
+- Optional `[run].cmd` to override run command.
 - Workspace builds via `[workspace]` with per-project `dcr.toml`.
 - Path dependencies with include/lib resolution and `dcr.lock` generation.
 
@@ -31,7 +38,7 @@ Current DCR focuses on a simple, predictable workflow:
 
 - `dcr.toml` is required for `build`, `run`, and `clean`.
 - `run` works only with `build.kind = "bin"`.
-- Incremental rebuild currently tracks source file timestamps (not header dependency graphs).
+- Incremental rebuild tracks source file timestamps and header dependencies (rebuilds when either source or included headers change).
 - Object files are always created under `target/<profile>/obj/`.
 
 ## Repository

docs/SUMMARY.md

@@ -24,6 +24,8 @@
 * [dcr build](commands/dcr-build.md)
 * [dcr run](commands/dcr-run.md)
 * [dcr clean](commands/dcr-clean.md)
+* [dcr gen](commands/dcr-gen.md)
+* [dcr test](commands/dcr-test.md)
 
 ## Dependencies & Build
 
@@ -31,11 +33,15 @@
 * [Local dependencies](dependencies-and-build/local-dependencies.md)
 * [Versioning & lock file](dependencies-and-build/versioning-and-lock-file.md)
 * [Target directory](dependencies-and-build/target-directory.md)
+* [Cross-compilation and targets](dependencies-and-build/cross-compilation.md)
 * [Compilers & linking](dependencies-and-build/compilers-and-linking.md)
 
 ## Reference & Help
 
 * [CLI reference](reference-and-help/cli-reference.md)
 * [Config reference](reference-and-help/config-reference.md)
+* [Workspace guide](reference-and-help/workspace-guide.md)
+* [Flags & environment](reference-and-help/flags-and-environment.md)
+* [Troubleshooting map](reference-and-help/troubleshooting-map.md)
 * [FAQ](reference-and-help/faq.md)
 * [Contributing & Bug reports](reference-and-help/contributing-and-bug-reports.md)

docs/commands/dcr-build.md

@@ -8,6 +8,9 @@ Builds the project in `debug` or `release` profile.
 dcr build
 dcr build --debug
 dcr build --release
+dcr build --target linux --release
+dcr build --release --force
+dcr build --debug --clean
 ```
 
 ## What `build` does
@@ -30,17 +33,36 @@ dcr build --release
 - `build.platform`
 - `build.cflags`
 - `build.ldflags`
+- `build.debug` / `build.release`
+- `build.exclude`
+- `build.include`
+- `build.pkg_config`
+- `build.steps`
+- `build.post_steps`
+- `build.generated`
+- `build.expect`
+- `build.clean`
 
 ## Source selection
 
 - `language = "c"` -> `*.c`
 - `language = "c++" | "cpp" | "cxx"` -> `*.cpp`, `*.cxx`, `*.cc`
 - `language = "asm"` -> `*.s`, `*.S`, `*.asm`
+- Mixed languages are supported with arrays, for example `language = ["c", "asm"]`.
+- By default sources are searched in `src/`; use `build.roots` and `build.src_disable` to override.
 
 ## Notes
 
-- The profile is selected from the first argument only.
+- Profile flag (`--debug` / `--release`) can appear in any argument position (duplicates are rejected).
 - Unknown profile flags return an error.
-- Incremental rebuild is based on source/object mtime comparison.
+- `--target <triple>` builds for specified target (short names: `linux`, `macos`, `windows`).
+- If no `--target`, builds for `build.targets` or native.
+- Incremental rebuild checks source/object mtime and tracked header dependencies.
+- `--force` skips build cache checks and recompiles.
+- `--clean` removes `target/<profile>` and `build.clean` paths before building.
+- Default GCC/Clang profile flags: `debug` -> `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDCR_DEBUG`, `release` -> `-O3 -DNDEBUG`.
 - For `language = "asm"` with `compiler = "as"`/`"gas"`, use `.s` files (no preprocessing). For `.S`, use `gcc` or `clang`.
 - In workspace root, `dcr build` builds all members in dependency order.
+- `build.exclude` removes paths from source/header collection; `build.include` re-allows matching paths and has priority over `exclude`.
+- `build.steps` run before compilation; `build.post_steps` run after linking.
+- `build.generated` is cleaned when `build.steps` need to rerun; `build.expect` is verified after post-steps.

docs/commands/dcr-clean.md

@@ -17,6 +17,8 @@ dcr clean --release --all
 - Without arguments: removes entire `target/`.
 - With profile: removes only `target/<profile>/`.
 - With `--all`: also cleans all workspace members.
+- Additionally removes paths from `build.clean` if configured.
+- `build.clean` supports `{profile}` and version placeholders.
 
 ## Validation
 

docs/commands/dcr-gen.md

@@ -0,0 +1,170 @@
+# dcr gen
+
+Generates IDE and build tool integration files for C/C++ development environments.
+
+## Usage
+
+```sh
+dcr gen project-info
+dcr gen project-info --release
+dcr gen compile-commands
+dcr gen compile-commands --debug
+dcr gen vscode
+dcr gen vscode --release
+dcr gen clion
+dcr gen clion --debug
+```
+
+## Subcommands
+
+### `dcr gen project-info`
+
+Outputs project metadata as JSON array.
+
+```sh
+dcr gen project-info [--debug | --release]
+```
+
+Outputs structured information about the project (root project + all workspace members if present):
+
+```json
+[
+  {
+    "name": "my-project",
+    "version": "1.0.0",
+    "root": "/path/to/root",
+    "profile": "debug",
+    "language": "c++",
+    "standard": "c++17",
+    "compiler": "g++",
+    "kind": "bin",
+    "sources": ["/path/to/root/src/main.cpp", ...],
+    "include_dirs": ["/path/to/dep/include", ...],
+    "lib_dirs": ["/path/to/dep/lib", ...],
+    "libs": ["somelib", ...],
+    "cflags": ["-Wall", ...],
+    "ldflags": ["-lm", ...]
+  }
+]
+```
+
+This is useful for integrating DCR projects with custom build tools or scripts.
+
+### `dcr gen compile-commands`
+
+Generates `compile_commands.json` for use by `clangd`, `clang-tidy`, and other tools.
+
+```sh
+dcr gen compile-commands [--debug | --release]
+```
+
+Writes `./compile_commands.json` containing compilation database entries for all source files. This file is recognized by:
+- LSP servers (`clangd`, `clang-tools-extra`)
+- Linters (`clang-tidy`)
+- Format tools (`clang-format`)
+
+The entries include:
+- Full compiler command with flags
+- Source file path
+- Object file output path
+- Project root as working directory
+
+### `dcr gen vscode`
+
+Generates Visual Studio Code integration files.
+
+```sh
+dcr gen vscode [--debug | --release]
+```
+
+Creates `.vscode/` directory with:
+
+- **`launch.json`**: Debug configurations (one per binary target, debug + release variants)
+- **`tasks.json`**: Build/run/clean tasks using `dcr` commands
+- **`settings.json`**: Clangd configuration pointing to `compile_commands.json`
+- **`extensions.json`**: Recommends `clangd`, disables `cpptools`
+- **`compile_commands.json`**: Compilation database (same as `dcr gen compile-commands`)
+
+Usage in VSCode:
+- Open the Command Palette (`Ctrl+Shift+P`) and select **"Debug: Start Debugging"** to run debugger
+- Press `Ctrl+Shift+B` to run the build task
+- Clangd will provide IntelliSense and diagnostics based on `compile_commands.json`
+- Generated `launch.json` uses CodeLLDB (`type: "lldb"`), so install `vadimcn.vscode-lldb`
+
+### `dcr gen clion`
+
+Generates JetBrains CLion integration files.
+
+```sh
+dcr gen clion [--debug | --release]
+```
+
+Creates `.idea/` directory with:
+
+- **`externalTools.xml`**: Registers DCR build/clean/gen commands as external tools
+- **`customTargets.xml`**: Defines build targets for debug and release
+- **`misc.xml`**: Points CLion to `compile_commands.json` for compilation database
+- **`.idea/.gitignore`**: Ignores auto-generated files
+- **`runConfigurations/*.xml`**: Debug run configs (one per binary target)
+- **`compile_commands.json`**: Compilation database (same as `dcr gen compile-commands`)
+
+Usage in CLion:
+- Build/clean via **Tools → DCR → Build Debug/Release/Clean**
+- Run/debug via **Run → Run Configurations** (dropdown) → select generated config
+- Code completion and diagnostics come from the compilation database
+
+## Config values used
+
+- `package.name`
+- `build.compiler`
+- `build.language`
+- `build.standard`
+- `build.kind`
+- `build.target`
+- `build.platform`
+- `build.cflags`
+- `build.ldflags`
+- `build.debug` / `build.release`
+- `build.exclude`
+- `build.include`
+- `build.pkg_config`
+- `build.roots`
+- `build.src_disable`
+- Workspace members (if `[workspace]` is present)
+
+## Workspace support
+
+When running `dcr gen` in a workspace root, all commands process both the root project and all workspace members:
+
+- `project-info` returns an array with entries for each member + root
+- `compile-commands` includes entries from all members
+- `vscode` and `clion` generate unified configurations that work across all members
+
+## Troubleshooting
+
+### Clangd not picking up includes
+
+- Ensure `compile_commands.json` exists in the workspace root
+- In VSCode settings, verify `clangd.arguments` includes `--compile-commands-dir=<workspace-root>`
+- Rebuild via `dcr gen compile-commands` if sources or dependencies changed
+
+### Debug configuration not working
+
+- Verify binary paths in `launch.json` match actual build output (`target/<profile>/binary-name`)
+- For workspace projects, each member's debug config uses its own `target/` directory
+- Ensure GDB/LLDB is installed: `gdb --version` or `lldb --version`
+- If VSCode reports unsupported debugger type, install the extension that matches `launch.json` type (`vadimcn.vscode-lldb` for `lldb`)
+
+### CLion not recognizing includes
+
+- Regenerate via `dcr gen clion --debug`
+- File → Invalidate Caches → Invalidate and Restart
+- Verify `.idea/misc.xml` points to correct `compile_commands.json` path
+
+## Notes
+
+- Profiles default to `debug` if not specified
+- Generation does not require the project to be built first
+- Generated files are safe to commit; they are generated from `dcr.toml` and thus repeatable
+- IDE configurations may be customized after generation, but changes will be overwritten on next `dcr gen` run
+- For multi-binary projects, `vscode` and `clion` generate debug configs for all binaries (both debug + release variants)

docs/commands/dcr-run.md

@@ -8,6 +8,9 @@ Builds the project and runs the resulting binary.
 dcr run
 dcr run --debug
 dcr run --release
+dcr run --target linux --release
+dcr run --release --force
+dcr run --debug --clean
 ```
 
 ## Behavior
@@ -16,11 +19,21 @@ dcr run --release
 2. Reads `package.name`, `build.kind`, and optional `build.target`.
 3. Runs the same build flow as `dcr build`.
 4. Executes the built artifact path for the selected profile.
+5. If `[run].cmd` is set, runs that command instead of the built binary.
 
 ## Restrictions
 
 - If `build.kind = "staticlib"` or `build.kind = "sharedlib"`, `run` exits with error.
 - The profile is selected from the first argument.
+- `--target <triple>` runs the binary for specified target (short names: `linux`, `macos`, `windows`).
+- `--force` skips build cache checks and recompiles.
+- `--clean` removes `target/<profile>` and `build.clean` paths before building.
+
+## `run.cmd` variables
+
+`run.cmd` supports the same variables as build steps: `{profile}`, `{version}`, `{version_major}`,
+`{version_minor}`, `{version_patch}`, `{version_suffix}`, `{version_suffix_dash}`.
+The command runs via `sh -c` on Unix and `cmd /C` on Windows.
 
 ## On build failure
 

docs/commands/dcr-test.md

@@ -0,0 +1,44 @@
+# dcr test
+
+Runs the project's test suite.
+
+## Usage
+
+```sh
+dcr test
+dcr test --release
+dcr test --target linux
+dcr test --init
+```
+
+## What `test` does
+
+1. Builds the project with the specified profile/target.
+2. Compiles test files in `tests/` (e.g., `tests/test.c`) into a test binary.
+3. Runs the test binary and parses output for PASS/SKIP/FAIL results.
+4. Reports summary with colored output.
+
+## Test Structure
+
+DCR uses a simple test framework:
+
+- Header: `tests/dcr_test.h` (generated by `dcr test --init`)
+- Test file: `tests/test.c` (template generated by `dcr test --init`)
+- Macros: `TEST(name)`, `TEST_CASE(name)`, `EXPECT(condition)`, `SKIP(reason)`
+- Output: `[PASS] test_name`, `[FAIL] test_name`, or `[SKIP] test_name`
+
+## Config values used
+
+- `package.name`
+- `build.compiler`, `build.language`, `build.standard`
+- `build.cflags`, `build.ldflags`
+- `build.debug` / `build.release`
+- `build.targets` (if specified)
+
+## Notes
+
+- Test binary is linked with the main project (for lib projects) or standalone.
+- `--init` creates `tests/dcr_test.h` and `tests/test.c` if missing.
+- Tests run in release mode by default for performance.
+- Custom test logic can be added by editing `tests/test.c`.
+- Fails if no `tests/test.c` exists (run `dcr test --init` first).

docs/configuration/build-profiles.md

@@ -14,12 +14,14 @@ dcr run --release
 dcr clean --debug
 ```
 
+You can also add `--force` or `--clean` to `build`/`run`.
+
 ## Default profile flags
 
 ### GCC/Clang-like toolchains
 
 - `debug`: `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDCR_DEBUG`
-- `release`: `-O3 -DNDEBUG -march=native`
+- `release`: `-O3 -DNDEBUG`
 
 ### MSVC toolchain
 
@@ -38,7 +40,7 @@ Default compiler flags:
 GCC/Clang:
 
 - `debug`: `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDCR_DEBUG`
-- `release`: `-O3 -DNDEBUG -march=native`
+- `release`: `-O3 -DNDEBUG`
 
 MSVC:
 
@@ -55,3 +57,18 @@ Shared library mode (`kind = "sharedlib"`):
 - Linux: `lib<name>.so`
 - macOS: `lib<name>.dylib`
 - Windows: `<name>.dll`
+
+## Profile overrides
+
+Use `[build.debug]` and `[build.release]` to override build settings per profile.
+All values inherit from `[build]`. If a field is present in the profile table, it replaces the base value.
+For arrays (like `cflags`/`ldflags`), the profile value is appended to the base array.
+
+```toml
+[build.debug]
+cflags = ["-g3"]
+
+[build.release]
+cflags = ["-O3"]
+ldflags = ["-s"]
+```

docs/configuration/build-section.md

@@ -9,22 +9,123 @@ standard = "c11"
 compiler = "clang"
 kind = "bin"
 # optional:
+# inherit = true  # Inherit from base (default true)
+# targets = ["linux", "macos"]  # Multiple targets to build
 # target = "./dist"
 # platform = "x86_64"
 # cflags = ["-Wall"]
 # ldflags = ["-lm"]
+# exclude = ["src/vendor", "src/legacy/**"]
+# include = ["src/legacy/boot/**"]
+# roots = ["kernel", "drivers"]
+# src_disable = true
+# pkg_config = ["Qt6Core", "Qt6Widgets"]
+# generated = ["src/ui/*.h"]
+# expect = ["./target/{profile}/boot/*.bin"]
+# clean = ["./target/{profile}/boot", "/tmp/image/*.img"]
 ```
 
 ## Fields
 
-- `language` (string, required): `c`, `c++`, `cpp`, `cxx`, or `asm`.
+- `language` (string or array, required): `c`, `c++`, `cpp`, `cxx`, or `asm`.
+  Mixed languages can be specified as an array, for example `["c", "c++", "asm"]`.
 - `standard` (string, required): language standard passed to compiler.
 - `compiler` (string, required): compiler command (for example `clang`, `gcc`, `cl`).
 - `kind` (string, required): `bin`, `staticlib`, or `sharedlib`.
+- `inherit` (bool, optional): inherit settings from base `[build]` (default `true`). If `false`, only use target/profile specific settings.
+- `targets` (string array, optional): list of targets to build simultaneously. Supports short names (`linux`, `macos`, `windows`).
 - `target` (string, optional): custom output directory for final artifact.
 - `platform` (string, optional): architecture hint for compiler (used for `-march` or `/arch`).
 - `cflags` (string array, optional): extra compile flags.
 - `ldflags` (string array, optional): extra link flags.
+- `exclude` (string array, optional): paths or glob patterns to skip during source/header collection.
+- `include` (string array, optional): allowlist paths or globs that override `exclude`.
+- `include` directory entries (non-glob) are also passed to the compiler as `-I` include paths.
+- `roots` (string array, optional): additional source roots to scan instead of `src/`.
+- `src_disable` (bool, optional): disables default `src/` root when true.
+- `pkg_config` (string array, optional): packages used to append `pkg-config --cflags/--libs`.
+- `generated` (string array, optional): generated files to delete when build steps rerun.
+- `expect` (string array, optional): artifacts that must exist after build/post-steps.
+- `clean` (string array, optional): additional paths removed by `dcr clean` and `--clean`.
+
+Notes for `exclude`/`include`:
+- Supports `*` and `**` glob patterns.
+- If `include` is set, it has priority over `exclude`.
+- Use `include` to re-allow nested paths, for example exclude `src/boot` but allow `src/boot/arch/**`.
+When using glob patterns in `exclude`, DCR converts them internally, so `exclude` globs still work as expected.
+
+### Build steps
+
+Build steps run shell commands before compilation. Post steps run after linking.
+
+```toml
+[[build.steps]]
+name = "uic"
+in = "src/ui/*.ui"
+out = "src/ui/{stem}.h"
+cmd = "{uic} {in} -o {out}"
+
+[[build.post_steps]]
+name = "image"
+in = "target/{profile}/boot/*.bin"
+out = "/tmp/image/os-{version}.img"
+cmd = "dd if=/dev/zero of={out} bs=1M count=8"
+```
+
+Step notes:
+- `in` supports glob patterns.
+- If `in` expands to multiple files, `out` must include `{stem}`.
+- Steps run only when inputs are newer than outputs.
+- Variables: `{in}`, `{out}`, `{stem}`, `{cflags}`, `{uic}`, `{moc}`, `{rcc}`, `{profile}`,
+  `{version}`, `{version_major}`, `{version_minor}`, `{version_patch}`, `{version_suffix}`, `{version_suffix_dash}`.
+
+`build.clean` supports `{profile}` and version placeholders (`{version}`, `{version_major}`, ...).
+
+### Profile overrides
+
+Profile tables inherit all values from `[build]`. Any field present in the profile table replaces the base value.
+Array fields (like `cflags`/`ldflags`) are appended to the base array.
+
+Target tables override profile and base settings for specific targets. Full inheritance order:
+1. `[build.<target>.<profile>]`
+2. `[build.<profile>.<target>]`
+3. `[build.<target>]`
+4. `[build.<profile>]`
+5. `[build]`
+
+If custom `cflags` are set (non-empty), default compiler flags are disabled.
+
+```toml
+[build.debug]
+cflags = ["-g3"]
+
+[build.release]
+cflags = ["-O3"]
+ldflags = ["-s"]
+
+# Target-specific overrides (applied after profile)
+[build.linux]
+compiler = "gcc"
+cflags = ["-march=x86_64"]
+
+[build.macos]
+compiler = "clang"
+cflags = ["-arch", "x86_64"]
+
+# Full inheritance example
+[build.linux.release]
+cflags = ["-O3", "-march=native"]  # Overrides profile and base
+
+[build.release.linux]
+ldflags = ["-static"]  # Alternative order
+
+[build.windows.debug]
+compiler = "x86_64-w64-mingw32-gcc"
+cflags = []  # Empty to disable defaults
+
+[build.release]
+inherit = false  # No inheritance, only explicit settings
+```
 
 ## Toolchain section
 
@@ -35,6 +136,9 @@ cxx = "clang++"
 as = "as"
 ar = "ar"
 ld = "ld"
+uic = "uic"
+moc = "moc"
+rcc = "rcc"
 ```
 
 ## Behavior notes

docs/configuration/dcr.toml-overview.md

@@ -27,7 +27,8 @@ kind = "bin"
 - `[dependencies]`
 
 Workspace-only root:
-- `[workspace]` may be used instead of `[package]`/`[build]` for a workspace root.
+- `[workspace]` can be added to a normal root config to define members and dependency order.
+- Root config still requires `[package]`, `[build]`, and `[dependencies]`.
 
 ## Required keys
 
@@ -42,9 +43,29 @@ Workspace-only root:
 
 ## Optional keys
 
+- `build.inherit`
+- `build.targets`
 - `build.target`
+- `build.platform`
 - `build.cflags`
 - `build.ldflags`
+- `build.exclude`
+- `build.include`
+- `build.roots`
+- `build.src_disable`
+- `build.pkg_config`
+- `build.steps`
+- `build.post_steps`
+- `build.generated`
+- `build.expect`
+- `build.clean`
+- `build.debug`
+- `build.release`
+- `build.<target>` (target-specific overrides)
 - dependency fields (`include`, `lib`, `libs`, `system`)
-- `[toolchain]` overrides (`cc`, `cxx`, `as`, `ar`, `ld`)
+- `[toolchain]` overrides (`cc`, `cxx`, `as`, `ar`, `ld`, `uic`, `moc`, `rcc`)
+- `[toolchain.<target>]` (target-specific toolchain)
 - `[workspace]` members
+- `[workspace.<target>]` (target-specific workspace)
+- `[run]` overrides (`cmd`)
+- `[run.<target>]` (target-specific run)

docs/dependencies-and-build/compilers-and-linking.md

@@ -15,8 +15,11 @@ DCR picks a backend from `build.compiler`:
 ## Compilation model
 
 - Source files are found recursively in `src/` based on `build.language`.
-- Each source is compiled to `target/<profile>/obj/<relative-path>.o` (`.obj` on MSVC).
+- `build.roots` and `build.src_disable` can replace the default `src/` root.
+- Mixed language builds use arrays, for example `build.language = ["c", "asm"]`.
+- Each source is compiled to `target/<target>/<profile>/obj/<relative-path>.o` (`.obj` on MSVC, where `<target>` is `native` or target triple).
 - Recompile happens when source mtime is newer than object mtime.
+- `build.exclude` removes paths from source/header collection; `build.include` re-allows matching paths and has priority over `exclude`.
 
 ## Default build flags
 
@@ -25,13 +28,15 @@ These flags are applied automatically based on profile and compiler backend.
 GCC/Clang:
 
 - `debug`: `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDCR_DEBUG`
-- `release`: `-O3 -DNDEBUG -march=native`
+- `release`: `-O3 -DNDEBUG`
 
 MSVC:
 
 - `debug`: `/Od /Zi /W4 /DDCR_DEBUG /Oy-`
 - `release`: `/O2 /DNDEBUG`
 
+Note: If custom `cflags` are set in `dcr.toml`, default profile flags are disabled to allow full control.
+
 ## Platform hint
 
 If `build.platform` is set, DCR passes it as an architecture hint:
@@ -46,10 +51,12 @@ If `[toolchain]` is set, DCR uses its values to override compiler/linker tools:
 - `cc`, `cxx`, `as` override compilers for C/C++/ASM
 - `ar` overrides the archiver (used for `staticlib`)
 - `ld` overrides the linker (used by GCC/Clang/NASM/GAS backends)
+- `uic`, `moc`, `rcc` override Qt tools used in `build.steps`
 
 Environment overrides (highest priority):
 - `DCR_COMPILER` (all languages)
 - `DCR_CC`, `DCR_CXX`, `DCR_AS`, `DCR_AR`, `DCR_LD`
+- `DCR_DEBUG` enables verbose build logging
 
 ## Linking
 

docs/dependencies-and-build/cross-compilation.md

@@ -0,0 +1,201 @@
+# Cross-compilation and Targets
+
+DCR supports cross-compilation to different platforms using the `--target` flag. This allows building your project for architectures and operating systems different from the host.
+
+## Basic Usage
+
+```bash
+# Build for a specific target
+dcr build --target x86_64-unknown-linux-gnu --release
+
+# Short names for common platforms
+dcr build --target linux --release    # x86_64-unknown-linux-gnu
+dcr build --target macos --release    # x86_64-apple-darwin
+dcr build --target windows --release  # x86_64-pc-windows-msvc
+
+# Run for a specific target
+dcr run --target linux --release
+```
+
+## Supported Targets
+
+### Short Names
+- `linux` → `x86_64-unknown-linux-gnu`
+- `macos` → `x86_64-apple-darwin`
+- `windows` → `x86_64-pc-windows-msvc`
+
+### Full Target Triples
+DCR supports any valid target triple in the format `<arch>-<vendor>-<os>-<abi>`. Common examples:
+- `x86_64-unknown-linux-gnu`
+- `aarch64-linux-gnu`
+- `x86_64-apple-darwin`
+- `aarch64-apple-darwin`
+- `x86_64-pc-windows-msvc`
+- `i686-pc-windows-gnu`
+
+## Configuration
+
+### Multiple Targets
+
+Configure multiple targets to build simultaneously:
+
+```toml
+[build.targets]
+targets = ["linux", "macos", "windows"]
+
+# Or per profile
+[build.release.targets]
+targets = ["linux", "macos"]
+```
+
+If no `--target` is specified, DCR builds for all targets in `build.targets` (or native if empty).
+
+### Target-Specific Settings
+
+Override settings for specific targets:
+
+```toml
+[build.linux]
+compiler = "gcc"
+cflags = ["-Wall", "-O2"]
+
+[build.macos]
+compiler = "clang"
+cflags = ["-Wall", "-O2", "-arch", "x86_64"]
+
+[build.windows]
+compiler = "x86_64-w64-mingw32-gcc"
+ldflags = ["-static"]
+```
+
+### Target-Specific Toolchain
+
+Configure toolchain per target:
+
+```toml
+[toolchain.linux]
+cc = "gcc"
+ld = "ld"
+
+[toolchain.macos]
+cc = "clang"
+ld = "ld"
+
+[toolchain.windows]
+cc = "x86_64-w64-mingw32-gcc"
+ld = "x86_64-w64-mingw32-ld"
+```
+
+### Target-Specific Run Commands
+
+Use custom run commands per target:
+
+```toml
+[run.linux]
+cmd = "./target/linux/release/myapp"
+
+[run.macos]
+cmd = "open ./target/macos/release/myapp.app"
+
+[run.windows]
+cmd = "wine ./target/windows/release/myapp.exe"
+```
+
+## Workspace and Dependencies Inheritance
+
+Workspace and dependencies sections also support target/profile inheritance:
+
+```toml
+[workspace.linux]
+members = [
+  { name = "lib1", path = "libs/lib1" },
+]
+
+[dependencies.linux]
+sdl2 = { system = true, include = ["/usr/include/SDL2"] }
+
+[dependencies.windows]
+sdl2 = { system = true, include = ["C:/SDL2/include"] }
+```
+
+Order: `workspace.target.profile` → `workspace.profile.target` → `workspace.target` → `workspace.profile` → `workspace`.
+
+Add `inherit = false` to disable inheritance in any section.
+
+Settings are applied in order:
+1. `[build.<target>]`
+2. `[build.<profile>]`
+3. `[build]`
+
+### Toolchain Configuration
+
+For cross-compilation, configure toolchains:
+
+```toml
+[toolchain]
+cc = "aarch64-linux-gnu-gcc"
+cxx = "aarch64-linux-gnu-g++"
+ar = "aarch64-linux-gnu-ar"
+ld = "aarch64-linux-gnu-ld"
+```
+
+## Output Structure
+
+Build outputs are organized by target:
+
+```
+target/
+├── native/
+│   ├── debug/
+│   └── release/
+├── x86_64-unknown-linux-gnu/
+│   ├── debug/
+│   └── release/
+└── aarch64-linux-gnu/
+    ├── debug/
+    └── release/
+```
+
+## Requirements
+
+- Cross-compilation requires appropriate toolchains installed (e.g., `aarch64-linux-gnu-gcc` on Arch Linux).
+- For Windows targets on Linux, install MinGW: `pacman -S mingw-w64-gcc`.
+- For macOS targets on Linux, use `osxcross` or similar.
+
+## Examples
+
+### ARM Linux Build
+
+```bash
+# Install toolchain (Arch Linux)
+pacman -S aarch64-linux-gnu-gcc
+
+# Configure
+echo '[build.aarch64-linux-gnu]
+compiler = "aarch64-linux-gnu-gcc"' >> dcr.toml
+
+# Build
+dcr build --target aarch64-linux-gnu --release
+```
+
+### Windows Build on Linux
+
+```bash
+# Install toolchain (Arch Linux)
+pacman -S mingw-w64-gcc
+
+# Configure
+echo '[build.windows]
+compiler = "x86_64-w64-mingw32-gcc"' >> dcr.toml
+
+# Build
+dcr build --target windows --release
+```
+
+## Troubleshooting
+
+- **Toolchain not found**: Ensure the compiler is installed and in PATH, or configure `[toolchain]` in `dcr.toml`. For Arch Linux: `pacman -S aarch64-linux-gnu-gcc` for ARM, `pacman -S mingw-w64-gcc` for Windows cross-compilation.
+- **Linking errors**: Check `ldflags` and library paths for cross-compilation.
+- **Header issues**: Include paths may differ; use target-specific `cflags`.
+
+For more help, see [Troubleshooting map](troubleshooting-map.md).

docs/dependencies-and-build/target-directory.md

@@ -1,6 +1,6 @@
 # Target directory
 
-By default, DCR writes final artifacts to `target/<profile>/`.
+By default, DCR writes final artifacts to `target/<target>/<profile>/` (where `<target>` is `native` or target triple).
 
 You can override this with `build.target`:
 
@@ -20,4 +20,4 @@ target = "./dist"
 
 ## Important detail
 
-`build.target` changes only the final artifact location. Object cache and dependency sync directories still use `target/<profile>/...`.
+`build.target` changes only the final artifact location. Object cache and dependency sync directories still use `target/<target>/<profile>/...`.

docs/getting-started/build-and-run.md

@@ -8,12 +8,15 @@ Debug (default):
 dcr build
 # or
 dcr build --debug
+dcr build --target linux --debug
+dcr build --debug --clean
 ```
 
 Release:
 
 ```sh
 dcr build --release
+dcr build --target windows --release
 ```
 
 ## Run
@@ -21,7 +24,10 @@ dcr build --release
 ```sh
 dcr run
 # or
+dcr run --target macos
 dcr run --release
+dcr run --target linux --release
+dcr run --release --force
 ```
 
 `dcr run` first builds, then launches the produced binary.
@@ -44,6 +50,8 @@ dcr clean --release --all
 ## Notes
 
 - `run` is unavailable for `build.kind = "staticlib"` and `build.kind = "sharedlib"`.
-- Build profile flag is parsed from the first command argument.
+- Build profile flag (`--debug` / `--release`) can be passed in any argument position.
 - Unknown profile flags produce an error.
 - In workspace root, `clean --all` cleans all member projects.
+- `--target` builds/runs for specified target (short names: `linux`, `macos`, `windows`).
+- `--clean` for `build`/`run` removes `target/<target>/<profile>` and paths from `build.clean`.

docs/getting-started/project-structure.md

@@ -31,10 +31,10 @@ project/
 - `dcr.toml`: main project configuration.
 - `dcr.lock`: generated lock file for resolved path dependencies.
 - `src/`: recursively scanned source directory.
-- `target/<profile>/obj/`: cached object files for incremental rebuild.
+- `target/<target>/<profile>/obj/`: cached object files for incremental rebuild (where `<target>` is `native` or target triple).
-- `target/<profile>/deps/`: synchronized copies of path dependencies.
+- `target/<target>/<profile>/deps/`: synchronized copies of path dependencies.
-- `target/<profile>/<name>` (or `.exe` on Windows): output for `kind = "bin"`.
+- `target/<target>/<profile>/<name>` (or `.exe` on Windows): output for `kind = "bin"`.
-- `target/<profile>/lib<name>.a` (or `<name>.lib` on Windows): output for `kind = "staticlib"`.
+- `target/<target>/<profile>/lib<name>.a` (or `<name>.lib` on Windows): output for `kind = "staticlib"`.
-- `target/<profile>/lib<name>.so` (or `.dylib` on macOS, `<name>.dll` on Windows): output for `kind = "sharedlib"`.
+- `target/<target>/<profile>/lib<name>.so` (or `.dylib` on macOS, `<name>.dll` on Windows): output for `kind = "sharedlib"`.
 
-If `build.target` is set, the final artifact is written to that custom directory, while object cache still stays in `target/<profile>/obj`.
+If `build.target` is set, the final artifact is written to that custom directory, while object cache still stays in `target/<target>/<profile>/obj`.

docs/reference-and-help/cli-reference.md

@@ -8,6 +8,7 @@ dcr init
 dcr build [--debug|--release]
 dcr run [--debug|--release]
 dcr clean [--debug|--release] [--all]
+dcr gen <subcommand>
 dcr --help
 dcr --version
 dcr --update
@@ -15,12 +16,13 @@ dcr --update
 
 ## Notes on argument parsing
 
-- Most commands parse profile from the first argument.
+- `build`/`run` parse flags in any order (`--debug|--release`, `--force`, `--clean`) and reject duplicates.
 - `new` requires exactly one argument.
 - `init` and `--update` do not accept extra arguments.
 - `clean` accepts `--debug|--release` and optional `--all`.
+- `gen` supports `project-info`, `compile-commands`, `vscode`, `clion`.
 
 ## Exit behavior overview
 
 - Successful command execution returns `0`.
-- Validation/build/runtime errors return non-zero status.
+- Validation/build/runtime failures return non-zero status.

docs/reference-and-help/config-reference.md

@@ -8,7 +8,7 @@ name = "string"      # required
 version = "string"   # required
 
 [build]
-language = "c|c++|cpp|cxx|asm"     # required
+language = "c|c++|cpp|cxx|asm"     # required (string or array)
 standard = "string"            # required
 compiler = "string"            # required
 kind = "bin|staticlib|sharedlib"         # required
@@ -16,6 +16,42 @@ target = "string"              # optional
 platform = "string"            # optional
 cflags = ["string", "..."]     # optional
 ldflags = ["string", "..."]    # optional
+exclude = ["string", "..."]    # optional
+include = ["string", "..."]    # optional
+roots = ["string", "..."]      # optional
+src_disable = false            # optional
+pkg_config = ["string", "..."] # optional
+generated = ["string", "..."]  # optional
+expect = ["string", "..."]     # optional
+clean = ["string", "..."]      # optional
+
+[[build.steps]]
+name = "string"
+in = "glob"
+out = "path or glob"
+cmd = "string"
+
+[[build.post_steps]]
+name = "string"
+in = "glob"
+out = "path or glob"
+cmd = "string"
+
+# Inline array form (equivalent to [[build.steps]] / [[build.post_steps]])
+steps = [
+  { name = "string", in = "glob", out = "path or glob", cmd = "string" },
+]
+post_steps = [
+    { name = "string", in = "glob", out = "path or glob", cmd = "string" },
+]
+
+[build.debug]
+cflags = ["string", "..."]     # optional
+ldflags = ["string", "..."]    # optional
+
+[build.release]
+cflags = ["string", "..."]     # optional
+ldflags = ["string", "..."]    # optional
 
 [toolchain]
 cc = "string"   # optional
@@ -23,6 +59,12 @@ cxx = "string"  # optional
 as = "string"   # optional
 ar = "string"   # optional
 ld = "string"   # optional
+uic = "string"  # optional
+moc = "string"  # optional
+rcc = "string"  # optional
+
+[run]
+cmd = "string"  # optional
 
 [workspace]
 name = { path = "string", deps = ["string", "..."] }
@@ -42,6 +84,15 @@ name = {
 - Required string fields must be non-empty.
 - `build.kind` must be `bin`, `staticlib`, or `sharedlib`.
 - Dependency fields `include/lib/libs` must be string arrays when provided.
+- `build.exclude`/`build.include` must be string arrays when provided.
+- `build.roots` must be a string array when provided.
+- `build.src_disable` must be boolean when provided.
+- `build.clean`/`build.generated`/`build.pkg_config`/`build.expect` must be string arrays when provided.
+- `build.debug`/`build.release` must be tables; their `cflags`/`ldflags` must be string arrays.
+- `build.steps`/`build.post_steps` entries must include `name`, `in`, `out`, `cmd`.
+- `build.language` may be a string or array (for example `["c", "c++", "asm"]`).
+- `[build.<profile>]` tables inherit all base values and override any fields they specify.
+  Array fields (like `cflags`/`ldflags`) are appended to the base array.
 
 ## Generated defaults (`dcr new` / `dcr init`)
 

docs/reference-and-help/faq.md

@@ -2,7 +2,7 @@
 
 ## What commands are available?
 
-`new`, `init`, `build`, `run`, `clean`, `--help`, `--version`, `--update`.
+`new`, `init`, `build`, `run`, `clean`, `gen`, `--help`, `--version`, `--update`.
 
 ## Is `dcr.toml` mandatory?
 
@@ -21,7 +21,8 @@ Yes. Set `build.compiler` in `dcr.toml` (for example `gcc`, `clang`, `cl`, `clan
 
 ## How does incremental rebuild work?
 
-It compares source file mtime with object file mtime. Header dependency tracking is not implemented yet.
+It compares source file mtime with object file mtime.
+Header dependencies are tracked too: if an included header changes (or disappears), rebuild is triggered.
 
 ## What does `dcr run` do if build fails?
 

docs/reference-and-help/flags-and-environment.md

@@ -0,0 +1,48 @@
+# Flags & environment
+
+This page summarizes runtime flags and environment variables that affect DCR behavior.
+
+## Build/run flags
+
+Used with `dcr build` and `dcr run`:
+
+- `--debug`: select debug profile.
+- `--release`: select release profile.
+- `--force`: ignore incremental cache checks and rebuild.
+- `--clean`: remove `target/<profile>` and `build.clean` paths before build.
+
+Notes:
+
+- Flags can be passed in any order.
+- Duplicate profile flags are rejected.
+
+## Clean flags
+
+Used with `dcr clean`:
+
+- `--debug` / `--release`: clean only selected profile directory.
+- `--all`: in workspace root, also clean all members.
+
+## Environment variables
+
+Tool selection overrides:
+
+- `DCR_COMPILER` (all languages)
+- `DCR_CC`, `DCR_CXX`, `DCR_AS`, `DCR_AR`, `DCR_LD`
+
+Diagnostics:
+
+- `DCR_DEBUG=1` enables verbose build logging.
+
+## Quick examples
+
+```sh
+# Force full release rebuild
+dcr build --release --force
+
+# Clean before debug run
+dcr run --clean --debug
+
+# Use custom compiler from env
+DCR_CC=clang-18 dcr build --debug
+```

docs/reference-and-help/troubleshooting-map.md

@@ -0,0 +1,75 @@
+# Troubleshooting map
+
+Fast mapping from symptom to likely cause and first action.
+
+## `dcr.toml file not found`
+
+Likely cause:
+- you are outside project root (or member root).
+
+First action:
+```sh
+pwd
+ls
+```
+Run DCR from directory that contains `dcr.toml`.
+
+## `Invalid config: missing [package]` / `missing [build]`
+
+Likely cause:
+- incomplete config in root project.
+
+First action:
+- ensure root `dcr.toml` includes `[package]`, `[build]`, and `[dependencies]`.
+- for workspace setups, keep these sections in root and add `[workspace]` additionally.
+
+## `Unknown build flag` or profile-flag errors
+
+Likely cause:
+- typo in flag or duplicate profile flag.
+
+First action:
+```sh
+dcr --help
+```
+Use only supported flags and at most one of `--debug` / `--release`.
+
+## Dependency include/lib path errors
+
+Likely cause:
+- path in `[dependencies]` does not exist.
+
+First action:
+- verify `path`, `include`, `lib` values.
+- if using profile placeholders, confirm expanded paths exist for selected profile.
+
+## `Cannot run library build`
+
+Likely cause:
+- `build.kind` is `staticlib` or `sharedlib`.
+
+First action:
+- switch `build.kind` to `bin`, or set `[run].cmd` if you intentionally need custom run command.
+
+## Build succeeds but output is stale
+
+Likely cause:
+- stale artifacts or generated files from previous runs.
+
+First action:
+```sh
+dcr clean --all
+dcr build --force
+```
+
+## `dcr --update` suggests package manager update
+
+Likely cause:
+- DCR binary is managed by pacman/AUR.
+
+First action:
+```sh
+yay -Syu dcr
+# or
+paru -Syu dcr
+```

docs/reference-and-help/workspace-guide.md

@@ -0,0 +1,53 @@
+# Workspace guide
+
+`[workspace]` lets you build related DCR projects in dependency order from one root.
+
+## Important rule
+
+Workspace root still needs a valid root project config:
+
+- `[package]`
+- `[build]`
+- `[dependencies]`
+
+`[workspace]` augments that root config; it does not replace required root sections.
+
+## Minimal example
+
+```toml
+[package]
+name = "root-app"
+version = "0.1.0"
+
+[build]
+language = "c"
+standard = "c11"
+compiler = "clang"
+kind = "bin"
+
+[dependencies]
+
+[workspace]
+core = { path = "./modules/core", deps = [] }
+net = { path = "./modules/net", deps = ["core"] }
+app = { path = "./modules/app", deps = ["core", "net"] }
+```
+
+Each member path must point to a directory containing its own `dcr.toml`.
+
+## Build behavior
+
+- Running `dcr build` in workspace root builds members in topological dependency order, then builds the root project.
+
+- Running `dcr clean --all` in workspace root cleans all members too.
+
+- `dcr gen` in workspace root includes root + members in generated outputs.
+
+## Common errors
+
+- `workspace.<name>.path does not contain dcr.toml`:
+  member path is wrong or config is missing.
+- `workspace dependency '<name>' not found`:
+  `deps` references unknown member.
+- `workspace dependency cycle at <name>`:
+  cyclic dependencies in member graph.

src/cli/clean.rs

@@ -4,6 +4,7 @@ use crate::core::workspace::parse_workspace;
 use crate::utils::fs::{check_dir, find_project_root};
 use crate::utils::log::{error, warn};
 use crate::utils::text::{BOLD_GREEN, colored};
+use glob::glob;
 use std::fs;
 use std::path::Path;
 
@@ -74,7 +75,12 @@ fn parse_clean_flags(args: &[String]) -> Result<CleanFlags, String> {
 fn clean_from_root(root: &Path, flags: &CleanFlags) -> Result<(), String> {
     let config = Config::open("./dcr.toml").map_err(|err| err.to_string())?;
     if flags.all
-        && let Some(workspace) = parse_workspace(&config, root)?
+        && let Some(workspace) = parse_workspace(
+            &config,
+            flags.profile.as_deref().unwrap_or("debug"),
+            None,
+            root,
+        )?
     {
         for member in &workspace.members {
             clean_project_at(&member.path, flags.profile.as_deref())?;
@@ -85,6 +91,7 @@ fn clean_from_root(root: &Path, flags: &CleanFlags) -> Result<(), String> {
 
 fn clean_project_at(project_root: &Path, profile: Option<&str>) -> Result<(), String> {
     with_dir(project_root, || {
+        let config = Config::open("./dcr.toml").map_err(|err| err.to_string())?;
         let project_name = std::env::current_dir()
             .ok()
             .and_then(|p| p.file_name().map(|v| v.to_string_lossy().to_string()))
@@ -97,31 +104,33 @@ fn clean_project_at(project_root: &Path, profile: Option<&str>) -> Result<(), St
             "    Cleaning project `{}`",
             colored(&project_name, BOLD_GREEN)
         );
-        if !items.contains(&"target".to_string()) {
-            warn("Directory target not found");
-            return Ok(());
-        }
-
         if let Some(profile) = profile {
             let target_items = check_dir(Some("target")).unwrap_or_default();
             if !target_items.contains(&profile.to_string()) {
                 warn(&format!("Directory target/{profile} not found"));
-                return Ok(());
+            } else {
-            }
                 println!("    Profile: {}", colored(profile, BOLD_GREEN));
                 let _ = fs::remove_dir_all(format!("target/{profile}"));
                 println!(
                     "{} Removed directory target/{profile}",
                     colored("\n    ✔", BOLD_GREEN)
                 );
+            }
+            clean_custom_paths(&config, profile)?;
             return Ok(());
         }
 
+        if items.contains(&"target".to_string()) {
             let _ = fs::remove_dir_all("target");
             println!(
                 "{} Removed directory target",
                 colored("\n    ✔", BOLD_GREEN)
             );
+        } else {
+            warn("Directory target not found");
+        }
+        clean_custom_paths(&config, "debug")?;
+        clean_custom_paths(&config, "release")?;
         Ok(())
     })
 }
@@ -136,3 +145,86 @@ where
     let _ = std::env::set_current_dir(prev);
     result
 }
+
+fn clean_custom_paths(config: &Config, profile: &str) -> Result<(), String> {
+    let patterns = match config.get("build.clean") {
+        Some(v) => v
+            .as_array()
+            .ok_or_else(|| "build.clean must be an array of strings".to_string())?
+            .iter()
+            .filter_map(|item| item.as_str())
+            .map(|s| {
+                let value = s.replace("{profile}", profile);
+                substitute_version_vars(&value, config)
+            })
+            .collect::<Vec<String>>(),
+        None => Vec::new(),
+    };
+    if patterns.is_empty() {
+        return Ok(());
+    }
+    for pattern in patterns {
+        for entry in glob(&pattern).map_err(|err| format!("glob error: {err}"))? {
+            let path = entry.map_err(|err| format!("glob error: {err}"))?;
+            if path.is_dir() {
+                let _ = fs::remove_dir_all(&path);
+            } else if path.is_file() {
+                let _ = fs::remove_file(&path);
+            }
+        }
+    }
+    Ok(())
+}
+
+fn substitute_version_vars(value: &str, config: &Config) -> String {
+    let version = config
+        .get("package.version")
+        .and_then(|v| v.as_str())
+        .unwrap_or("");
+    let info = parse_version_info(version);
+    value
+        .replace("{version}", &info.full)
+        .replace("{version_major}", &info.major)
+        .replace("{version_minor}", &info.minor)
+        .replace("{version_patch}", &info.patch)
+        .replace("{version_suffix}", &info.suffix)
+        .replace("{version_suffix_dash}", &info.suffix_dash)
+}
+
+struct VersionInfo {
+    full: String,
+    major: String,
+    minor: String,
+    patch: String,
+    suffix: String,
+    suffix_dash: String,
+}
+
+fn parse_version_info(version: &str) -> VersionInfo {
+    let mut full = version.trim().to_string();
+    if full.is_empty() {
+        full = "0.0.0".to_string();
+    }
+    let full_clone = full.clone();
+    let (base, suffix) = match full_clone.split_once('-') {
+        Some((head, tail)) => (head, tail),
+        None => (full_clone.as_str(), ""),
+    };
+    let mut parts = base.split('.');
+    let major = parts.next().unwrap_or("0").to_string();
+    let minor = parts.next().unwrap_or("0").to_string();
+    let patch = parts.next().unwrap_or("0").to_string();
+    let suffix_dash = if suffix.is_empty() {
+        "".to_string()
+    } else {
+        format!("-{suffix}")
+    };
+    VersionInfo {
+        full,
+        major,
+        minor,
+        patch,
+        suffix: suffix.to_string(),
+        suffix_dash,
+    }
+}

src/cli/flags.rs

@@ -0,0 +1,59 @@
+use crate::config::{PROFILE, flags};
+use crate::utils::log::warn;
+
+pub struct BuildRunFlags {
+    pub profile: String,
+    pub target: Option<String>,
+    pub force: bool,
+    pub clean: bool,
+}
+
+pub fn parse_build_run_flags(args: &[String]) -> Result<BuildRunFlags, i32> {
+    let mut profile = PROFILE.to_string();
+    let mut target = None;
+    let mut force = false;
+    let mut clean = false;
+    let mut iter = args.iter();
+
+    while let Some(arg) = iter.next() {
+        if !arg.starts_with("--") {
+            warn("Unknown argument");
+            return Err(1);
+        }
+        let candidate = arg.trim_start_matches("--");
+        if candidate == "force" {
+            force = true;
+            continue;
+        }
+        if candidate == "clean" {
+            clean = true;
+            continue;
+        }
+        if candidate == "target" {
+            if let Some(t) = iter.next() {
+                target = Some(t.clone());
+            } else {
+                warn("--target requires a value");
+                return Err(1);
+            }
+            continue;
+        }
+        if flags(candidate).is_some() {
+            if profile != PROFILE {
+                warn("Duplicate profile flag");
+                return Err(1);
+            }
+            profile = candidate.to_string();
+            continue;
+        }
+        warn("Unknown build flag");
+        return Err(1);
+    }
+
+    Ok(BuildRunFlags {
+        profile,
+        target,
+        force,
+        clean,
+    })
+}

src/cli/help.rs

@@ -12,15 +12,20 @@ pub fn help() -> i32 {
     println!("    init              Initialize the current directory as a project");
     println!("    build [--profile] Build the project (default: --debug)");
     println!("    run [--profile]   Build and run the project (default: --debug)");
+    println!("    test              Run project tests (alias: tests)");
     println!("    clean             Remove the target directory");
+    println!("    gen <subcommand>  Generate IDE integration files");
     printc("FLAGS:", BOLD_GREEN);
     println!("    --help            Show command help");
     println!("    --update          Update dcr to the latest version");
     println!("    --version         Show dcr version");
     println!();
     printc("OPTIONS:", BOLD_GREEN);
-    println!("    --debug           Build with debug profile");
+    println!("    --debug           Use debug profile");
-    println!("    --release         Build with release profile");
+    println!("    --release         Use release profile");
+    println!("    --force           Force rebuild (build/run)");
+    println!("    --clean           Clean before build (build/run)");
+    println!("    --all             Clean all workspace members (clean)");
     println!();
     printc("EXAMPLES:", BOLD_GREEN);
     printc("    dcr new hello", BOLD_CYAN);

src/cli/init.rs

@@ -65,7 +65,7 @@ pub fn init(args: &[String]) -> i32 {
         return 1;
     }
     println!(
-        "    {} Created file {}\n",
+        "    {} Created file {}",
         colored("✔", BOLD_GREEN),
         colored("src/main.c", BOLD_CYAN)
     );

src/cli/mod.rs

@@ -1,7 +1,10 @@
 pub mod build;
 pub mod clean;
 pub mod flag_update;
+pub mod flags;
+pub mod r#gen;
 pub mod help;
 pub mod init;
 pub mod new;
 pub mod run;
+pub mod test;

src/cli/new.rs

@@ -86,7 +86,7 @@ pub fn new(args: &[String]) -> i32 {
         return 1;
     }
     println!(
-        "    {} Created file {}\n",
+        "    {} Created file {}",
         colored("✔", BOLD_GREEN),
         colored("src/main.c", BOLD_CYAN)
     );

src/cli/run.rs

@@ -1,15 +1,51 @@
 use crate::cli::build::build;
-use crate::config::{PROFILE, flags};
+use crate::cli::flags::parse_build_run_flags;
 use crate::core::config::Config;
 use crate::core::runner::run_binary;
 use crate::utils::fs::find_project_root;
-use crate::utils::log::{error, warn};
+use crate::utils::log::error;
 use crate::utils::text::{BOLD_GREEN, colored};
 use std::path::Path;
+use std::process::Command;
+
+fn get_run_cmd(
+    config: &Config,
+    profile: &str,
+    target: Option<&str>,
+    version: &str,
+) -> Option<String> {
+    let base = config.get("run.cmd").and_then(|v| v.as_str());
+    let target_cmd = if let Some(t) = target {
+        let normalized_t = normalize_target_os(t);
+        config
+            .get(&format!("run.{}.cmd", normalized_t))
+            .or_else(|| config.get(&format!("run.{}.cmd", t)))
+            .and_then(|v| v.as_str())
+    } else {
+        None
+    };
+    let profile_cmd = config
+        .get(&format!("run.{}.cmd", profile))
+        .and_then(|v| v.as_str());
+    let cmd = target_cmd.or(profile_cmd).or(base)?;
+    let trimmed = cmd.trim();
+    if trimmed.is_empty() {
+        None
+    } else {
+        Some(substitute_run_vars(trimmed, profile, version))
+    }
+}
+
+fn normalize_target_os(s: &str) -> &str {
+    match s {
+        "linux" => "x86_64-unknown-linux-gnu",
+        "macos" => "x86_64-apple-darwin",
+        "windows" => "x86_64-pc-windows-msvc",
+        _ => s,
+    }
+}
 
 pub fn run(args: &[String]) -> i32 {
-    let mut active_profile = PROFILE.to_string();
-
     let start_dir = match std::env::current_dir() {
         Ok(dir) => dir,
         Err(_) => {
@@ -51,35 +87,40 @@ pub fn run(args: &[String]) -> i32 {
         .map(|s| s.trim())
         .filter(|s| !s.is_empty());
 
-    if let Some(first_arg) = args.first() {
+    let flags = match parse_build_run_flags(args) {
-        if first_arg.starts_with("--") {
+        Ok(v) => v,
-            let candidate = first_arg.trim_start_matches("--");
+        Err(_) => return 1,
-            if flags(candidate).is_some() {
+    };
-                active_profile = candidate.to_string();
+
-            } else {
+    let version = config
-                warn("Unknown build flag");
+        .get("package.version")
-                return 1;
+        .and_then(|v| v.as_str())
-            }
+        .unwrap_or("");
-        } else {
+    let run_cmd = get_run_cmd(&config, &flags.profile, flags.target.as_deref(), version);
-            warn("Unknown argument");
-            return 1;
-        }
-    }
 
     let kind = build_kind.trim();
-    if kind == "staticlib" || kind == "sharedlib" {
+    if run_cmd.is_none() && (kind == "staticlib" || kind == "sharedlib") {
         error("Cannot run library build");
         return 1;
     }
     let build_status = build(args);
-    let bin_path = crate::platform::bin_path(&active_profile, project_name, target_dir);
+    let bin_path = crate::platform::bin_path(&flags.profile, project_name, target_dir);
     if build_status == 0 {
+        if let Some(cmd) = run_cmd {
+            println!("\n    {} {}", colored("Running", BOLD_GREEN), cmd);
+            println!("--------------------------------");
+            return run_shell(&cmd);
+        }
         println!("\n    {} {}", colored("Running", BOLD_GREEN), bin_path);
         println!("--------------------------------");
-        return run_binary(project_name, &active_profile, target_dir);
+        return run_binary(project_name, &flags.profile, target_dir);
     }
 
-    let fallback_code = run_binary(project_name, &active_profile, target_dir);
+    let fallback_code = if let Some(cmd) = run_cmd {
+        run_shell(&cmd)
+    } else {
+        run_binary(project_name, &flags.profile, target_dir)
+    };
     if fallback_code != 1 {
         return fallback_code;
     }
@@ -98,3 +139,65 @@ where
     let _ = std::env::set_current_dir(prev);
     result
 }
+
+fn run_shell(cmd: &str) -> i32 {
+    let status = if cfg!(target_os = "windows") {
+        Command::new("cmd").arg("/C").arg(cmd).status()
+    } else {
+        Command::new("sh").arg("-c").arg(cmd).status()
+    };
+    match status {
+        Ok(s) if s.success() => 0,
+        Ok(s) => s.code().unwrap_or(1),
+        Err(_) => 1,
+    }
+}
+
+fn substitute_run_vars(cmd: &str, profile: &str, version: &str) -> String {
+    let info = parse_version_info(version);
+    cmd.replace("{profile}", profile)
+        .replace("{version}", &info.full)
+        .replace("{version_major}", &info.major)
+        .replace("{version_minor}", &info.minor)
+        .replace("{version_patch}", &info.patch)
+        .replace("{version_suffix}", &info.suffix)
+        .replace("{version_suffix_dash}", &info.suffix_dash)
+}
+
+struct VersionInfo {
+    full: String,
+    major: String,
+    minor: String,
+    patch: String,
+    suffix: String,
+    suffix_dash: String,
+}
+
+fn parse_version_info(version: &str) -> VersionInfo {
+    let mut full = version.trim().to_string();
+    if full.is_empty() {
+        full = "0.0.0".to_string();
+    }
+    let full_clone = full.clone();
+    let (base, suffix) = match full_clone.split_once('-') {
+        Some((head, tail)) => (head, tail),
+        None => (full_clone.as_str(), ""),
+    };
+    let mut parts = base.split('.');
+    let major = parts.next().unwrap_or("0").to_string();
+    let minor = parts.next().unwrap_or("0").to_string();
+    let patch = parts.next().unwrap_or("0").to_string();
+    let suffix_dash = if suffix.is_empty() {
+        "".to_string()
+    } else {
+        format!("-{suffix}")
+    };
+    VersionInfo {
+        full,
+        major,
+        minor,
+        patch,
+        suffix: suffix.to_string(),
+        suffix_dash,
+    }
+}

src/cli/test.rs

@@ -0,0 +1,269 @@
+use crate::cli::build;
+use crate::config::{FILE_DCR_TEST_H, FILE_TEST_C, flags};
+use crate::core::config::Config;
+use crate::utils::fs::find_project_root;
+use crate::utils::log::error;
+use crate::utils::text::{BOLD_GREEN, BOLD_RED, RESET, colored};
+use std::env;
+use std::fs;
+use std::path::Path;
+use std::process::Command;
+
+const BOLD_BLUE: &str = "\x1b[1m\x1b[94m";
+
+pub fn test(args: &[String]) -> i32 {
+    let mut init_header = false;
+    for arg in args {
+        if arg == "--help" {
+            println!("USAGE:");
+            println!("    dcr test [--init]");
+            println!();
+            println!("ALIASES:");
+            println!("    dcr tests");
+            println!();
+            println!("DESCRIPTION:");
+            println!("    Runs project tests and prints a unified testsuite report.");
+            println!();
+            println!("OPTIONS:");
+            println!("    --init            Create tests/dcr_test.h in current project");
+            return 0;
+        }
+        if arg == "--init" {
+            init_header = true;
+            continue;
+        }
+        error("Unknown argument");
+        return 1;
+    }
+
+    let start_dir = match std::env::current_dir() {
+        Ok(dir) => dir,
+        Err(_) => {
+            error("Failed to determine current directory");
+            return 1;
+        }
+    };
+    let root = match find_project_root(&start_dir) {
+        Ok(Some(dir)) => dir,
+        Ok(None) => {
+            error("dcr.toml file not found");
+            return 1;
+        }
+        Err(_) => {
+            error("Failed to find project root");
+            return 1;
+        }
+    };
+
+    if init_header {
+        match with_dir(&root, ensure_test_header) {
+            Ok(()) => {}
+            Err(msg) => {
+                error(&msg);
+                return 1;
+            }
+        }
+    }
+
+    match with_dir(&root, run_testsuite) {
+        Ok(code) => code,
+        Err(msg) => {
+            error(&msg);
+            1
+        }
+    }
+}
+
+fn run_testsuite() -> Result<i32, String> {
+    if build::build(&[String::from("--release")]) != 0 {
+        return Ok(1);
+    }
+
+    let config = Config::open("./dcr.toml").map_err(|_| "Failed to read dcr.toml".to_string())?;
+    let name = config
+        .get("package.name")
+        .and_then(|v| v.as_str())
+        .ok_or("package.name not found in dcr.toml")?;
+    let kind = config
+        .get("package.kind")
+        .and_then(|v| v.as_str())
+        .unwrap_or("bin");
+
+    let compiler = env::var("DCR_CC").unwrap_or_else(|_| "cc".to_string());
+    let profile = "release";
+    let flags_vec = flags(profile).unwrap_or(&[]);
+    let flags_str = flags_vec.join(" ");
+
+    let test_c = "./tests/test.c";
+    if !Path::new(test_c).exists() {
+        return Err("tests/test.c not found; run 'dcr test --init' first".to_string());
+    }
+
+    // Compile test.c to object
+    let obj_path = "./tests/test.o";
+    let compile_cmd = format!("{} -c {} -o {} {}", compiler, test_c, obj_path, flags_str);
+    let compile_status = Command::new("sh")
+        .arg("-c")
+        .arg(&compile_cmd)
+        .status()
+        .map_err(|_| format!("Failed to compile {}", test_c))?;
+    if !compile_status.success() {
+        return Err(format!("Compilation of {} failed", test_c));
+    }
+
+    // Link
+    let bin_path = format!("./tests/test{}", std::env::consts::EXE_SUFFIX);
+    let link_cmd = if kind == "lib" {
+        format!(
+            "{} {} -o {} -Ltarget/release -l{}",
+            compiler, obj_path, bin_path, name
+        )
+    } else {
+        format!("{} {} -o {}", compiler, obj_path, bin_path)
+    };
+    let link_status = Command::new("sh")
+        .arg("-c")
+        .arg(&link_cmd)
+        .status()
+        .map_err(|_| format!("Failed to link {}", bin_path))?;
+    if !link_status.success() {
+        return Err(format!("Linking of {} failed", bin_path));
+    }
+
+    let out = Command::new(&bin_path)
+        .output()
+        .map_err(|_| format!("Failed to run `{bin_path}`"))?;
+
+    let stdout = String::from_utf8_lossy(&out.stdout);
+    let stderr = String::from_utf8_lossy(&out.stderr);
+    if !stderr.trim().is_empty() {
+        eprint!("{}", stderr);
+    }
+
+    let declared = extract_test_names("./tests/test.c");
+    let mut pass = 0;
+    let mut skip = 0;
+    let mut fail = 0;
+    let mut parsed_any = false;
+
+    for line in stdout.lines() {
+        let line = line.trim();
+        if let Some(name) = line.strip_prefix("[PASS] ") {
+            println!("{} {}", colored("[PASS]", BOLD_GREEN), name);
+            pass += 1;
+            parsed_any = true;
+            continue;
+        }
+        if let Some(name) = line.strip_prefix("[SKIP] ") {
+            println!("{} {}", colored("[SKIP]", BOLD_BLUE), name);
+            skip += 1;
+            parsed_any = true;
+            continue;
+        }
+        if let Some(name) = line.strip_prefix("[FAIL] ") {
+            println!("{} {}", colored("[FAIL]", BOLD_RED), name);
+            fail += 1;
+            parsed_any = true;
+            continue;
+        }
+        if let Some((status, name)) = line.split_once('\t') {
+            match status {
+                "PASS" => {
+                    println!("{} {}", colored("[PASS]", BOLD_GREEN), name);
+                    pass += 1;
+                    parsed_any = true;
+                }
+                "SKIP" => {
+                    println!("{} {}", colored("[SKIP]", BOLD_BLUE), name);
+                    skip += 1;
+                    parsed_any = true;
+                }
+                "FAIL" => {
+                    println!("{} {}", colored("[FAIL]", BOLD_RED), name);
+                    fail += 1;
+                    parsed_any = true;
+                }
+                _ => {}
+            }
+        }
+    }
+
+    if !parsed_any {
+        if out.status.success() {
+            for name in &declared {
+                println!("{} {}", colored("[PASS]", BOLD_GREEN), name);
+            }
+            pass = declared.len() as i32;
+        } else {
+            println!("{} testsuite", colored("[FAIL]", BOLD_RED));
+            fail = 1;
+        }
+    }
+
+    let total = if parsed_any || declared.is_empty() {
+        pass + skip + fail
+    } else {
+        declared.len() as i32
+    };
+
+    println!();
+    println!("{}", colored("=====================", BOLD_GREEN));
+    println!("{}", colored("  Testsuite summary  ", BOLD_GREEN));
+    println!("{}", colored("=====================", BOLD_GREEN));
+    println!("TOTAL: {}", total);
+    print_field("PASS", pass, BOLD_GREEN);
+    print_field("SKIP", skip, BOLD_BLUE);
+    print_field("FAIL", fail, BOLD_RED);
+    println!("{}", colored("=====================", BOLD_GREEN));
+
+    if fail > 0 || !out.status.success() {
+        return Ok(1);
+    }
+    Ok(0)
+}
+
+fn ensure_test_header() -> Result<(), String> {
+    fs::create_dir_all("./tests").map_err(|_| "Failed to create tests/".to_string())?;
+    fs::write("./tests/dcr_test.h", FILE_DCR_TEST_H)
+        .map_err(|_| "Failed to write tests/dcr_test.h".to_string())?;
+    println!("Created tests/dcr_test.h");
+    fs::write("./tests/test.c", FILE_TEST_C)
+        .map_err(|_| "Failed to write tests/test.c".to_string())?;
+    println!("Created tests/test.c");
+    Ok(())
+}
+
+fn extract_test_names(path: &str) -> Vec<String> {
+    let Ok(content) = fs::read_to_string(path) else {
+        return Vec::new();
+    };
+    let mut names = Vec::new();
+    for line in content.lines() {
+        let trimmed = line.trim();
+        if let Some(rest) = trimmed.strip_prefix("TEST_CASE(")
+            && let Some(name) = rest.strip_suffix("),")
+        {
+            names.push(name.to_string());
+        }
+    }
+    names
+}
+
+fn print_field(label: &str, value: i32, color: &str) {
+    if value == 0 {
+        println!("{}:  {}", label, value);
+    } else {
+        println!("{}{}:  {}{}", color, label, value, RESET);
+    }
+}
+
+fn with_dir<F, T>(dir: &Path, f: F) -> Result<T, String>
+where
+    F: FnOnce() -> Result<T, String>,
+{
+    let prev = std::env::current_dir().map_err(|_| "Failed to get current dir".to_string())?;
+    std::env::set_current_dir(dir).map_err(|_| "Failed to change directory".to_string())?;
+    let result = f();
+    let _ = std::env::set_current_dir(prev);
+    result
+}

src/config.rs

@@ -7,9 +7,81 @@ int main(void) {
 }
 "#;
 
+pub const FILE_DCR_TEST_H: &str = r#"#pragma once
+#include <stdio.h>
+#include <string.h>
+
+#define DCR_TEST_PASS 0
+#define DCR_TEST_FAIL 1
+#define DCR_TEST_SKIP 2
+
+#define EXPECT(expr) \
+    do { \
+        if (!(expr)) { \
+            fprintf(stderr, "assert failed: %s (%s:%d)\n", #expr, __FILE__, __LINE__); \
+            return DCR_TEST_FAIL; \
+        } \
+    } while (0)
+
+#define SKIP(reason) \
+    do { \
+        (void)(reason); \
+        return DCR_TEST_SKIP; \
+    } while (0)
+
+#define TEST(name) static int name(void)
+#define TEST_CASE(name) {#name, name}
+
+typedef int (*test_fn_t)(void);
+
+typedef struct {
+    const char *name;
+    test_fn_t fn;
+} test_case_t;
+
+static inline int dcr_test_raw_mode(int argc, char **argv) {
+    return argc > 1 && strcmp(argv[1], "--dcr-raw") == 0;
+}
+
+static inline void dcr_test_print_result(const char *name, int rc, int raw_mode) {
+    const char *tag = (rc == DCR_TEST_PASS) ? "PASS" : (rc == DCR_TEST_SKIP) ? "SKIP" : "FAIL";
+    if (raw_mode) {
+        printf("%s\t%s\n", tag, name);
+    } else {
+        printf("[%s] %s\n", tag, name);
+    }
+}
+"#;
+
+pub const FILE_TEST_C: &str = r#"#include "dcr_test.h"
+
+TEST(test_example) {
+    EXPECT(1 + 1 == 2);
+    return DCR_TEST_PASS;
+}
+
+static test_case_t CASES[] = {
+    TEST_CASE(test_example),
+};
+
+int main(int argc, char **argv) {
+    int raw = dcr_test_raw_mode(argc, argv);
+    int rc = 0;
+    int count = (int)(sizeof(CASES) / sizeof(CASES[0]));
+    for (int i = 0; i < count; ++i) {
+        int status = CASES[i].fn();
+        dcr_test_print_result(CASES[i].name, status, raw);
+        if (status == DCR_TEST_FAIL) {
+            rc = 1;
+        }
+    }
+    return rc;
+}
+"#;
+
 pub fn flags(profile: &str) -> Option<&'static [&'static str]> {
     match profile {
-        "release" => Some(&["-O3", "-DNDEBUG", "-march=native"]),
+        "release" => Some(&["-O3", "-DNDEBUG"]),
         "debug" => Some(&[
             "-O0",
             "-g",

src/core/builder/common.rs

@@ -2,33 +2,37 @@ use std::fs;
 use std::path::{Path, PathBuf};
 
 pub fn collect_sources(
+    roots: &[PathBuf],
     extensions: &[&str],
     exclude_dirs: &[PathBuf],
+    include_paths: &[String],
 ) -> Result<Vec<String>, String> {
     let mut sources = Vec::new();
-    collect_sources_rec("./src", extensions, &mut sources, exclude_dirs)?;
+    for root in roots {
+        collect_sources_rec(root, extensions, &mut sources, exclude_dirs, include_paths)?;
+    }
     sources.sort();
     if sources.is_empty() {
-        return Err("No source files found in ./src".to_string());
+        return Err(format!("No source files found in {}", format_roots(roots)));
     }
     Ok(sources)
 }
 
 fn collect_sources_rec(
-    dir: &str,
+    dir: &Path,
     extensions: &[&str],
     out: &mut Vec<String>,
     exclude_dirs: &[PathBuf],
+    include_paths: &[String],
 ) -> Result<(), String> {
-    let dir_path = Path::new(dir);
+    let full_dir = if dir.is_absolute() {
-    let full_dir = if dir_path.is_absolute() {
+        dir.to_path_buf()
-        dir_path.to_path_buf()
     } else {
         std::env::current_dir()
             .map_err(|err| format!("src dir error: {err}"))?
-            .join(dir_path)
+            .join(dir)
     };
-    if is_excluded(&full_dir, exclude_dirs) {
+    if is_excluded(&full_dir, exclude_dirs, include_paths) && include_paths.is_empty() {
         return Ok(());
     }
     let entries = fs::read_dir(&full_dir).map_err(|err| format!("src dir error: {err}"))?;
@@ -36,15 +40,18 @@ fn collect_sources_rec(
         let entry = entry.map_err(|err| format!("src dir error: {err}"))?;
         let path = entry.path();
         if path.is_dir() {
-            if is_excluded(&path, exclude_dirs) {
+            if is_excluded(&path, exclude_dirs, include_paths) && include_paths.is_empty() {
                 continue;
             }
-            collect_sources_rec(&path.to_string_lossy(), extensions, out, exclude_dirs)?;
+            collect_sources_rec(&path, extensions, out, exclude_dirs, include_paths)?;
             continue;
         }
         if !path.is_file() {
             continue;
         }
+        if is_excluded(&path, exclude_dirs, include_paths) {
+            continue;
+        }
         let ext_raw = path.extension().and_then(|v| v.to_str()).unwrap_or("");
         let ext_lower = ext_raw.to_lowercase();
         let matched = extensions
@@ -57,10 +64,95 @@ fn collect_sources_rec(
     Ok(())
 }
 
-pub fn is_excluded(path: &Path, exclude_dirs: &[PathBuf]) -> bool {
+fn format_roots(roots: &[PathBuf]) -> String {
+    if roots.is_empty() {
+        return "<none>".to_string();
+    }
+    let mut out = Vec::new();
+    for root in roots {
+        out.push(root.to_string_lossy().to_string());
+    }
+    out.join(", ")
+}
+
+pub fn is_excluded(path: &Path, exclude_dirs: &[PathBuf], include_paths: &[String]) -> bool {
+    if matches_patterns(path, include_paths, true) {
+        return false;
+    }
+    if matches_patterns(path, include_paths, false) {
+        return true;
+    }
     exclude_dirs.iter().any(|dir| path.starts_with(dir))
 }
 
+fn matches_patterns(path: &Path, patterns: &[String], positive: bool) -> bool {
+    if patterns.is_empty() {
+        return false;
+    }
+    let cwd = std::env::current_dir().ok();
+    let abs_path = if path.is_absolute() {
+        path.to_path_buf()
+    } else if let Some(base) = cwd.as_ref() {
+        base.join(path)
+    } else {
+        path.to_path_buf()
+    };
+    let abs = abs_path.to_string_lossy().replace('\\', "/");
+    let rel = cwd
+        .as_ref()
+        .and_then(|base| abs_path.strip_prefix(base).ok())
+        .map(|p| p.to_string_lossy().replace('\\', "/"))
+        .unwrap_or_default();
+    let rel_dot = if rel.is_empty() {
+        String::new()
+    } else {
+        format!("./{rel}")
+    };
+    for raw in patterns {
+        let trimmed = raw.trim();
+        if trimmed.is_empty() {
+            continue;
+        }
+        let is_neg = trimmed.starts_with('!');
+        if is_neg == positive {
+            continue;
+        }
+        let normalized = trimmed.trim_start_matches('!').replace('\\', "/");
+        if normalized.is_empty() {
+            continue;
+        }
+        if has_glob_magic(&normalized) {
+            let pat = match glob::Pattern::new(&normalized) {
+                Ok(p) => p,
+                Err(_) => continue,
+            };
+            if pat.matches(&abs)
+                || (!rel.is_empty() && (pat.matches(&rel) || pat.matches(&rel_dot)))
+            {
+                return true;
+            }
+            continue;
+        }
+        let norm = normalized.trim_end_matches('/');
+        let candidate = Path::new(norm);
+        let full = if candidate.is_absolute() {
+            candidate.to_path_buf()
+        } else if let Some(base) = cwd.as_ref() {
+            base.join(candidate)
+        } else {
+            candidate.to_path_buf()
+        };
+        if abs_path.starts_with(&full) {
+            return true;
+        }
+    }
+    false
+}
+
+pub fn has_glob_magic(value: &str) -> bool {
+    value.chars().any(|c| matches!(c, '*' | '?' | '['))
+}
+
 pub fn normalize_source_path(path: &Path) -> String {
     if !path.is_absolute() {
         return path.to_string_lossy().to_string();
@@ -189,6 +281,10 @@ mod tests {
         dir
     }
 
+    fn default_roots() -> Vec<PathBuf> {
+        vec![PathBuf::from("src")]
+    }
+
     #[test]
     fn object_path_basic() {
         let obj_dir = Path::new("target/debug/obj");
@@ -260,19 +356,34 @@ mod tests {
 
     #[test]
     fn is_excluded_match() {
+        let include: Vec<String> = Vec::new();
         let excluded = vec![PathBuf::from("/project/src/vendor")];
-        assert!(is_excluded(Path::new("/project/src/vendor"), &excluded));
+        assert!(is_excluded(
+            Path::new("/project/src/vendor"),
+            &excluded,
+            &include
+        ));
         assert!(is_excluded(
             Path::new("/project/src/vendor/lib.c"),
-            &excluded
+            &excluded,
+            &include
         ));
     }
 
     #[test]
     fn is_excluded_no_match() {
+        let include: Vec<String> = Vec::new();
         let excluded = vec![PathBuf::from("/project/src/vendor")];
-        assert!(!is_excluded(Path::new("/project/src/main.c"), &excluded));
+        assert!(!is_excluded(
-        assert!(!is_excluded(Path::new("/other/vendor"), &excluded));
+            Path::new("/project/src/main.c"),
+            &excluded,
+            &include
+        ));
+        assert!(!is_excluded(
+            Path::new("/other/vendor"),
+            &excluded,
+            &include
+        ));
     }
 
     #[test]
@@ -287,7 +398,9 @@ mod tests {
         let _guard = CWD_LOCK.lock().unwrap();
         let prev = std::env::current_dir().unwrap();
         std::env::set_current_dir(&dir).unwrap();
-        let result = collect_sources(&["c"], &[]);
+        let include: Vec<String> = Vec::new();
+        let roots = default_roots();
+        let result = collect_sources(&roots, &["c"], &[], &include);
         std::env::set_current_dir(prev).unwrap();
 
         let sources = result.expect("should find sources");
@@ -309,7 +422,9 @@ mod tests {
         let _guard = CWD_LOCK.lock().unwrap();
         let prev = std::env::current_dir().unwrap();
         std::env::set_current_dir(&dir).unwrap();
-        let result = collect_sources(&["cpp", "cxx", "cc"], &[]);
+        let include: Vec<String> = Vec::new();
+        let roots = default_roots();
+        let result = collect_sources(&roots, &["cpp", "cxx", "cc"], &[], &include);
         std::env::set_current_dir(prev).unwrap();
 
         let sources = result.expect("should find sources");
@@ -325,7 +440,9 @@ mod tests {
         let _guard = CWD_LOCK.lock().unwrap();
         let prev = std::env::current_dir().unwrap();
         std::env::set_current_dir(&dir).unwrap();
-        let result = collect_sources(&["c"], &[]);
+        let include: Vec<String> = Vec::new();
+        let roots = default_roots();
+        let result = collect_sources(&roots, &["c"], &[], &include);
         std::env::set_current_dir(prev).unwrap();
 
         assert!(result.is_err(), "empty src should return error");
@@ -344,7 +461,9 @@ mod tests {
         let _guard = CWD_LOCK.lock().unwrap();
         let prev = std::env::current_dir().unwrap();
         std::env::set_current_dir(&dir).unwrap();
-        let result = collect_sources(&["c"], &exclude);
+        let include: Vec<String> = Vec::new();
+        let roots = default_roots();
+        let result = collect_sources(&roots, &["c"], &exclude, &include);
         std::env::set_current_dir(prev).unwrap();
 
         let sources = result.expect("should find sources");
@@ -364,13 +483,89 @@ mod tests {
         let _guard = CWD_LOCK.lock().unwrap();
         let prev = std::env::current_dir().unwrap();
         std::env::set_current_dir(&dir).unwrap();
-        let result = collect_sources(&["c"], &[]);
+        let include: Vec<String> = Vec::new();
+        let roots = default_roots();
+        let result = collect_sources(&roots, &["c"], &[], &include);
         std::env::set_current_dir(prev).unwrap();
 
         let sources = result.expect("should find sources");
         assert_eq!(sources.len(), 2);
     }
 
+    #[test]
+    fn include_overrides_exclude() {
+        let dir = temp_dir("include_override");
+        let src = dir.join("src");
+        let boot = src.join("boot");
+        let arch = boot.join("arch");
+        fs::create_dir_all(&arch).unwrap();
+        fs::write(arch.join("start.s"), "").unwrap();
+        fs::write(boot.join("skip.c"), "").unwrap();
+
+        let exclude = vec![boot.clone()];
+        let include = vec!["src/boot/arch/**".to_string()];
+        let _guard = CWD_LOCK.lock().unwrap();
+        let prev = std::env::current_dir().unwrap();
+        std::env::set_current_dir(&dir).unwrap();
+        let roots = default_roots();
+        let result = collect_sources(&roots, &["s", "c"], &exclude, &include);
+        std::env::set_current_dir(prev).unwrap();
+
+        let sources = result.expect("should find sources");
+        assert_eq!(sources.len(), 1);
+        assert!(sources[0].ends_with("start.s"));
+    }
+
+    #[test]
+    fn exclude_glob_with_include_override() {
+        let dir = temp_dir("exclude_glob");
+        let src = dir.join("src");
+        let legacy = src.join("legacy");
+        let allow = legacy.join("allow");
+        fs::create_dir_all(&allow).unwrap();
+        fs::write(legacy.join("skip.c"), "").unwrap();
+        fs::write(allow.join("keep.c"), "").unwrap();
+
+        let exclude = vec![dir.join("src"), dir.join(".")];
+        let include = vec![
+            "!src/legacy/**".to_string(),
+            "src/legacy/allow/**".to_string(),
+        ];
+        let _guard = CWD_LOCK.lock().unwrap();
+        let prev = std::env::current_dir().unwrap();
+        std::env::set_current_dir(&dir).unwrap();
+        let roots = default_roots();
+        let result = collect_sources(&roots, &["c"], &exclude, &include);
+        std::env::set_current_dir(prev).unwrap();
+
+        let sources = result.expect("should find sources");
+        assert_eq!(sources.len(), 1);
+        assert!(sources[0].ends_with("keep.c"));
+    }
+
+    #[test]
+    fn exclude_glob_without_include_keeps_other_files() {
+        let dir = temp_dir("exclude_glob_only");
+        let src = dir.join("src");
+        let gen_dir = src.join("gen");
+        fs::create_dir_all(&gen_dir).unwrap();
+        fs::write(src.join("main.c"), "").unwrap();
+        fs::write(gen_dir.join("skip.c"), "").unwrap();
+
+        let exclude: Vec<PathBuf> = Vec::new();
+        let include = vec!["!src/gen/**".to_string()];
+        let _guard = CWD_LOCK.lock().unwrap();
+        let prev = std::env::current_dir().unwrap();
+        std::env::set_current_dir(&dir).unwrap();
+        let roots = default_roots();
+        let result = collect_sources(&roots, &["c"], &exclude, &include);
+        std::env::set_current_dir(prev).unwrap();
+
+        let sources = result.expect("should find sources");
+        assert_eq!(sources.len(), 1);
+        assert!(sources[0].ends_with("main.c"));
+    }
+
     #[test]
     fn normalize_relative_path() {
         let result = normalize_source_path(Path::new("./src/main.c"));

src/core/builder/gas.rs

@@ -7,7 +7,8 @@ use std::process::Command;
 use std::time::Instant;
 
 pub fn build(ctx: &BuildContext) -> Result<f64, String> {
-    if ctx.language.to_lowercase().as_str() != "asm" {
+    let lang = ctx.language.to_lowercase();
+    if lang.split('+').any(|p| p.trim() != "asm") {
         return Err("GAS backend requires build.language = \"asm\"".to_string());
     }
     let assembler = if ctx.compiler.is_empty() {
@@ -91,7 +92,12 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
 
 pub(crate) fn collect_sources(ctx: &BuildContext) -> Result<Vec<String>, String> {
     // GAS handles only lowercase .s files
-    common::collect_sources(&["s"], ctx.exclude_dirs)
+    common::collect_sources(
+        ctx.source_roots,
+        &["s"],
+        ctx.exclude_dirs,
+        ctx.include_paths,
+    )
 }
 
 fn build_objects(

src/core/builder/mod.rs

@@ -10,12 +10,16 @@ pub struct BuildContext<'a> {
     pub compiler: &'a str,
     pub language: &'a str,
     pub standard: &'a str,
+    #[allow(dead_code)]
+    pub target: Option<&'a str>,
     pub target_dir: Option<&'a str>,
     pub kind: &'a str,
     pub platform: Option<&'a str>,
     pub linker: Option<&'a str>,
     pub archiver: Option<&'a str>,
+    pub source_roots: &'a [std::path::PathBuf],
     pub exclude_dirs: &'a [std::path::PathBuf],
+    pub include_paths: &'a [String],
     pub include_dirs: &'a [String],
     pub lib_dirs: &'a [String],
     pub libs: &'a [String],

src/core/builder/msvc.rs

@@ -12,8 +12,9 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     } else {
         ctx.compiler
     };
-    if ctx.language.to_lowercase() == "asm" {
+    let lang = ctx.language.to_lowercase();
-        return Err("MSVC backend does not support build.language = \"asm\"".to_string());
+    if lang.contains("asm") {
+        return Err("MSVC backend does not support build.language with asm".to_string());
     }
     let start_time = Instant::now();
     let sources = collect_sources(ctx)?;
@@ -65,9 +66,11 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     for obj in &objects {
         cmd.arg(obj);
     }
+    if ctx.cflags.is_empty() {
         for flag in default_flags(ctx.profile) {
             cmd.arg(flag);
         }
+    }
     for flag in ctx.cflags {
         cmd.arg(flag);
     }
@@ -109,16 +112,29 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
 
 pub(crate) fn collect_sources(ctx: &BuildContext) -> Result<Vec<String>, String> {
     let extensions = source_extensions(ctx.language);
-    common::collect_sources(&extensions, ctx.exclude_dirs)
+    common::collect_sources(
+        ctx.source_roots,
+        &extensions,
+        ctx.exclude_dirs,
+        ctx.include_paths,
+    )
 }
 
 fn source_extensions(language: &str) -> Vec<&str> {
-    let lang = language.to_lowercase();
+    let mut out = Vec::new();
+    for part in language.split('+') {
+        let lang = part.trim().to_lowercase();
         match lang.as_str() {
-        "c" => vec!["c"],
+            "c" => out.extend(["c"]),
-        "c++" | "cpp" | "cxx" => vec!["cpp", "cxx", "cc"],
+            "c++" | "cpp" | "cxx" => out.extend(["cpp", "cxx", "cc"]),
-        _ => vec!["c"],
+            "asm" => {}
+            _ => {}
         }
+    }
+    if out.is_empty() {
+        out.extend(["c"]);
+    }
+    out
 }
 
 fn msvc_standard_flag(language: &str, standard: &str) -> Result<String, String> {
@@ -203,9 +219,11 @@ fn build_objects(
             if let Some(flag) = msvc_arch_flag(ctx.platform) {
                 cmd.arg(flag);
             }
+            if ctx.cflags.is_empty() {
                 for flag in default_flags(ctx.profile) {
                     cmd.arg(flag);
                 }
+            }
             for flag in ctx.cflags {
                 cmd.arg(flag);
             }

src/core/builder/nasm.rs

@@ -7,7 +7,8 @@ use std::process::Command;
 use std::time::Instant;
 
 pub fn build(ctx: &BuildContext) -> Result<f64, String> {
-    if ctx.language.to_lowercase().as_str() != "asm" {
+    let lang = ctx.language.to_lowercase();
+    if lang.split('+').any(|p| p.trim() != "asm") {
         return Err("NASM backend requires build.language = \"asm\"".to_string());
     }
     let assembler = if ctx.compiler.is_empty() {
@@ -91,7 +92,12 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
 
 pub(crate) fn collect_sources(ctx: &BuildContext) -> Result<Vec<String>, String> {
     // NASM handles lowercase .s and .asm only (not .S which is GCC preprocessed)
-    common::collect_sources(&["asm", "s"], ctx.exclude_dirs)
+    common::collect_sources(
+        ctx.source_roots,
+        &["asm", "s"],
+        ctx.exclude_dirs,
+        ctx.include_paths,
+    )
 }
 
 fn build_objects(

src/core/builder/unix_cc.rs

@@ -14,7 +14,12 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     };
     let start_time = Instant::now();
     let extensions = source_extensions(ctx.language);
-    let sources = common::collect_sources(&extensions, ctx.exclude_dirs)?;
+    let sources = common::collect_sources(
+        ctx.source_roots,
+        &extensions,
+        ctx.exclude_dirs,
+        ctx.include_paths,
+    )?;
     let obj_dir = Path::new("./target").join(ctx.profile).join("obj");
     let objects = build_objects(compiler, &sources, &obj_dir, ctx, "o")?;
 
@@ -80,22 +85,34 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
 
 pub(crate) fn collect_sources(ctx: &BuildContext) -> Result<Vec<String>, String> {
     let extensions = source_extensions(ctx.language);
-    common::collect_sources(&extensions, ctx.exclude_dirs)
+    common::collect_sources(
+        ctx.source_roots,
+        &extensions,
+        ctx.exclude_dirs,
+        ctx.include_paths,
+    )
 }
 
 fn source_extensions(language: &str) -> Vec<&str> {
-    let lang = language.to_lowercase();
+    let mut out = Vec::new();
+    for part in language.split('+') {
+        let lang = part.trim().to_lowercase();
         match lang.as_str() {
-        "c" => vec!["c"],
+            "c" => out.extend(["c"]),
-        "c++" | "cpp" | "cxx" => vec!["cpp", "cxx", "cc"],
+            "c++" | "cpp" | "cxx" => out.extend(["cpp", "cxx", "cc"]),
-        "asm" => vec!["s", "S", "asm"],
+            "asm" => out.extend(["s", "S", "asm"]),
-        _ => vec!["c"],
+            _ => {}
         }
+    }
+    if out.is_empty() {
+        out.extend(["c"]);
+    }
+    out
 }
 
 fn default_flags(profile: &str) -> &'static [&'static str] {
     match profile {
-        "release" => &["-O3", "-DNDEBUG", "-march=native"],
+        "release" => &["-O3", "-DNDEBUG"],
         "debug" => &[
             "-O0",
             "-g",
@@ -138,9 +155,11 @@ fn build_objects(
             if !ctx.standard.is_empty() && ctx.language.to_lowercase() != "asm" {
                 cmd.arg(format!("-std={}", ctx.standard));
             }
+            if ctx.cflags.is_empty() {
                 for flag in default_flags(ctx.profile) {
                     cmd.arg(flag);
                 }
+            }
             for flag in ctx.cflags {
                 cmd.arg(flag);
             }

src/core/config.rs

@@ -115,7 +115,12 @@ impl Config {
             .and_then(|v| v.as_table())
             .ok_or_else(|| ConfigError::Invalid("missing [build]".into()))?;
 
-        for key in ["language", "standard", "compiler"] {
+        if let Some(language) = build.get("language") {
+            self.validate_language(language)?;
+        } else {
+            return Err(ConfigError::Invalid("build.language is empty".into()));
+        }
+        for key in ["standard", "compiler"] {
             let value = build.get(key).and_then(|v| v.as_str()).unwrap_or("");
             if value.trim().is_empty() {
                 return Err(ConfigError::Invalid(format!("build.{key} is empty")));
@@ -144,6 +149,73 @@ impl Config {
                 return Err(ConfigError::Invalid("build.kind is invalid".into()));
             }
         }
+        if let Some(exclude) = build.get("exclude") {
+            let arr = exclude.as_array().ok_or_else(|| {
+                ConfigError::Invalid("build.exclude must be an array of strings".into())
+            })?;
+            for item in arr {
+                let s = item.as_str().unwrap_or("");
+                if s.trim().is_empty() {
+                    return Err(ConfigError::Invalid(
+                        "build.exclude contains empty value".into(),
+                    ));
+                }
+            }
+        }
+        if let Some(include) = build.get("include") {
+            let arr = include.as_array().ok_or_else(|| {
+                ConfigError::Invalid("build.include must be an array of strings".into())
+            })?;
+            for item in arr {
+                let s = item.as_str().unwrap_or("");
+                if s.trim().is_empty() {
+                    return Err(ConfigError::Invalid(
+                        "build.include contains empty value".into(),
+                    ));
+                }
+            }
+        }
+        if let Some(roots) = build.get("roots") {
+            let arr = roots.as_array().ok_or_else(|| {
+                ConfigError::Invalid("build.roots must be an array of strings".into())
+            })?;
+            for item in arr {
+                let s = item.as_str().unwrap_or("");
+                if s.trim().is_empty() {
+                    return Err(ConfigError::Invalid(
+                        "build.roots contains empty value".into(),
+                    ));
+                }
+            }
+        }
+        if let Some(src_disable) = build.get("src_disable")
+            && !src_disable.is_bool()
+        {
+            return Err(ConfigError::Invalid(
+                "build.src_disable must be a boolean".into(),
+            ));
+        }
+        if let Some(clean) = build.get("clean") {
+            let arr = clean.as_array().ok_or_else(|| {
+                ConfigError::Invalid("build.clean must be an array of strings".into())
+            })?;
+            for item in arr {
+                let s = item.as_str().unwrap_or("");
+                if s.trim().is_empty() {
+                    return Err(ConfigError::Invalid(
+                        "build.clean contains empty value".into(),
+                    ));
+                }
+            }
+        }
+        for profile in ["release", "debug"] {
+            if let Some(section) = build.get(profile) {
+                let table = section.as_table().ok_or_else(|| {
+                    ConfigError::Invalid(format!("build.{profile} must be a table"))
+                })?;
+                self.validate_profile_section(profile, table)?;
+            }
+        }
         self.validate_workspace()?;
         Ok(())
     }
@@ -161,6 +233,116 @@ impl Config {
 }
 
 impl Config {
+    fn validate_language(&self, value: &Value) -> Result<(), ConfigError> {
+        if let Some(s) = value.as_str() {
+            if s.trim().is_empty() {
+                return Err(ConfigError::Invalid("build.language is empty".into()));
+            }
+            return Ok(());
+        }
+        let arr = value
+            .as_array()
+            .ok_or_else(|| ConfigError::Invalid("build.language must be string or array".into()))?;
+        if arr.is_empty() {
+            return Err(ConfigError::Invalid("build.language is empty".into()));
+        }
+        for item in arr {
+            let s = item.as_str().unwrap_or("");
+            if s.trim().is_empty() {
+                return Err(ConfigError::Invalid(
+                    "build.language contains empty value".into(),
+                ));
+            }
+        }
+        Ok(())
+    }
+
+    fn validate_profile_section(
+        &self,
+        profile: &str,
+        table: &toml::value::Table,
+    ) -> Result<(), ConfigError> {
+        if let Some(lang) = table.get("language") {
+            self.validate_language(lang)?;
+        }
+        for key in ["standard", "compiler", "kind", "target", "platform"] {
+            if let Some(value) = table.get(key) {
+                let s = value.as_str().unwrap_or("");
+                if s.trim().is_empty() {
+                    return Err(ConfigError::Invalid(format!(
+                        "build.{profile}.{key} is empty"
+                    )));
+                }
+            }
+        }
+        if let Some(kind) = table.get("kind").and_then(|v| v.as_str()) {
+            let kind = kind.trim();
+            if !kind.is_empty() && kind != "bin" && kind != "staticlib" && kind != "sharedlib" {
+                return Err(ConfigError::Invalid(format!(
+                    "build.{profile}.kind is invalid"
+                )));
+            }
+        }
+        if let Some(src_disable) = table.get("src_disable")
+            && !src_disable.is_bool()
+        {
+            return Err(ConfigError::Invalid(format!(
+                "build.{profile}.src_disable must be boolean"
+            )));
+        }
+        for key in [
+            "cflags",
+            "ldflags",
+            "exclude",
+            "include",
+            "roots",
+            "pkg_config",
+            "generated",
+            "expect",
+            "clean",
+            "targets",
+        ] {
+            if let Some(val) = table.get(key) {
+                let arr = val.as_array().ok_or_else(|| {
+                    ConfigError::Invalid(format!(
+                        "build.{profile}.{key} must be an array of strings"
+                    ))
+                })?;
+                for item in arr {
+                    let s = item.as_str().unwrap_or("");
+                    if s.trim().is_empty() {
+                        return Err(ConfigError::Invalid(format!(
+                            "build.{profile}.{key} contains empty value"
+                        )));
+                    }
+                }
+            }
+        }
+        for key in ["steps", "post_steps"] {
+            if let Some(val) = table.get(key) {
+                let arr = val.as_array().ok_or_else(|| {
+                    ConfigError::Invalid(format!("build.{profile}.{key} must be an array"))
+                })?;
+                for item in arr {
+                    let tbl = item.as_table().ok_or_else(|| {
+                        ConfigError::Invalid(format!(
+                            "build.{profile}.{key} entries must be tables"
+                        ))
+                    })?;
+                    for req in ["name", "in", "out", "cmd"] {
+                        let s = tbl.get(req).and_then(|v| v.as_str()).unwrap_or("");
+                        if s.trim().is_empty() {
+                            return Err(ConfigError::Invalid(format!(
+                                "build.{profile}.{key} missing {req}"
+                            )));
+                        }
+                    }
+                }
+            }
+        }
+        Ok(())
+    }
+
     fn validate_workspace(&self) -> Result<(), ConfigError> {
         let Some(workspace) = self.get("workspace").and_then(|v| v.as_table()) else {
             return Ok(());
@@ -264,7 +446,12 @@ fn format_toml(value: &Value) -> Result<String, ConfigError> {
         .and_then(|v| v.as_str())
         .unwrap_or("");
 
-    let language = build.get("language").and_then(|v| v.as_str()).unwrap_or("");
+    let language_value = build.get("language");
+    let language = match language_value {
+        Some(Value::String(s)) => s.to_string(),
+        Some(Value::Array(arr)) => format_string_array(&Value::Array(arr.clone())),
+        _ => "".to_string(),
+    };
     let standard = build.get("standard").and_then(|v| v.as_str()).unwrap_or("");
     let compiler = build.get("compiler").and_then(|v| v.as_str()).unwrap_or("");
 
@@ -274,7 +461,11 @@ fn format_toml(value: &Value) -> Result<String, ConfigError> {
     out.push_str(&format!("version = \"{version}\"\n\n"));
 
     out.push_str("[build]\n");
+    if language.starts_with('[') {
+        out.push_str(&format!("language = {language}\n"));
+    } else {
         out.push_str(&format!("language = \"{language}\"\n"));
+    }
     out.push_str(&format!("standard = \"{standard}\"\n"));
     out.push_str(&format!("compiler = \"{compiler}\"\n"));
     let kind = build
@@ -474,6 +665,28 @@ mod tests {
         assert!(result.is_err(), "empty language should fail validation");
     }
 
+    #[test]
+    fn validate_language_array() {
+        let dir = temp_dir("lang_array");
+        let path = write_toml_file(
+            &dir,
+            "[package]\nname = \"test\"\nversion = \"0.1.0\"\n\n[build]\nlanguage = [\"c\", \"c++\", \"asm\"]\nstandard = \"c11\"\ncompiler = \"clang\"\n\n[dependencies]\n",
+        );
+        let result = Config::open(&path.to_string_lossy());
+        assert!(result.is_ok(), "language array should be valid");
+    }
+
+    #[test]
+    fn validate_language_array_empty_fails() {
+        let dir = temp_dir("lang_array_empty");
+        let path = write_toml_file(
+            &dir,
+            "[package]\nname = \"test\"\nversion = \"0.1.0\"\n\n[build]\nlanguage = []\nstandard = \"c11\"\ncompiler = \"clang\"\n\n[dependencies]\n",
+        );
+        let result = Config::open(&path.to_string_lossy());
+        assert!(result.is_err(), "empty language array should fail");
+    }
+
     #[test]
     fn validate_unknown_kind_fails() {
         let dir = temp_dir("bad_kind");

src/core/deps.rs

@@ -23,6 +23,7 @@ pub struct ResolvedDeps {
 pub fn resolve_deps(
     config: &Config,
     profile: &str,
+    target: Option<&str>,
     project_root: &Path,
 ) -> Result<ResolvedDeps, String> {
     let project_name = config
@@ -35,7 +36,7 @@ pub fn resolve_deps(
         .and_then(|v| v.as_str())
         .unwrap_or("")
         .to_string();
-    let deps = parse_dependencies(config)?;
+    let deps = parse_dependencies(config, profile, target)?;
     if deps.is_empty() {
         return Ok(ResolvedDeps {
             include_dirs: Vec::new(),
@@ -124,14 +125,38 @@ struct DepLock {
     source: String,
 }
 
-fn parse_dependencies(config: &Config) -> Result<Vec<DepSpec>, String> {
+fn parse_dependencies(
-    let deps_val = match config.get("dependencies") {
+    config: &Config,
-        Some(v) => v,
+    profile: &str,
+    target: Option<&str>,
+) -> Result<Vec<DepSpec>, String> {
+    let mut deps_table = None;
+    // Order: dependencies.target.profile, dependencies.profile.target, dependencies.target, dependencies.profile, dependencies
+    let combinations = if let Some(t) = target {
+        let normalized_t = crate::cli::build::normalize_target_os(t);
+        vec![
+            format!("dependencies.{}.{}", normalized_t, profile),
+            format!("dependencies.{}.{}", profile, normalized_t),
+            format!("dependencies.{}", normalized_t),
+            format!("dependencies.{}", profile),
+            "dependencies".to_string(),
+        ]
+    } else {
+        vec![
+            format!("dependencies.{}", profile),
+            "dependencies".to_string(),
+        ]
+    };
+    for key in combinations {
+        if let Some(val) = config.get(&key).and_then(|v| v.as_table()) {
+            deps_table = Some(val);
+            break;
+        }
+    }
+    let deps_table = match deps_table {
+        Some(t) => t,
         None => return Ok(Vec::new()),
     };
-    let deps_table = deps_val
-        .as_table()
-        .ok_or_else(|| "dependencies is not a table".to_string())?;
     let mut deps = Vec::new();
     for (name, value) in deps_table {
         match value {

src/core/workspace.rs

@@ -15,8 +15,33 @@ pub struct Workspace {
     pub members: Vec<WorkspaceMember>,
 }
 
-pub fn parse_workspace(config: &Config, root: &Path) -> Result<Option<Workspace>, String> {
+pub fn parse_workspace(
-    let table = match config.get("workspace").and_then(|v| v.as_table()) {
+    config: &Config,
+    profile: &str,
+    target: Option<&str>,
+    root: &Path,
+) -> Result<Option<Workspace>, String> {
+    let mut table = None;
+    // Order: workspace.target.profile, workspace.profile.target, workspace.target, workspace.profile, workspace
+    let combinations = if let Some(t) = target {
+        let normalized_t = crate::cli::build::normalize_target_os(t);
+        vec![
+            format!("workspace.{}.{}", normalized_t, profile),
+            format!("workspace.{}.{}", profile, normalized_t),
+            format!("workspace.{}", normalized_t),
+            format!("workspace.{}", profile),
+            "workspace".to_string(),
+        ]
+    } else {
+        vec![format!("workspace.{}", profile), "workspace".to_string()]
+    };
+    for key in combinations {
+        if let Some(val) = config.get(&key).and_then(|v| v.as_table()) {
+            table = Some(val);
+            break;
+        }
+    }
+    let table = match table {
         Some(t) => t,
         None => return Ok(None),
     };

src/main.rs

@@ -20,7 +20,9 @@ fn main() {
         "init" => cli::init::init(rest),
         "build" => cli::build::build(rest),
         "run" => cli::run::run(rest),
+        "test" | "tests" => cli::test::test(rest),
         "clean" => cli::clean::clean(rest),
+        "gen" => cli::r#gen::r#gen(rest),
         "--version" => {
             println!("dcr {} ({})", env!("CARGO_PKG_VERSION"), env!("DCR_TARGET"));
             0

tests/cli_basic.rs

@@ -218,3 +218,31 @@ fn workspace_build_and_clean_all() {
         "root target/debug should remain"
     );
 }
+
+#[test]
+fn dcr_test_runs_without_sandbox_dependency() {
+    let Some(compiler) = available_compiler() else {
+        eprintln!("no compiler found; skipping dcr test integration");
+        return;
+    };
+
+    let dir = unique_sandbox_dir("dcr_test_independent");
+    let out = run_dcr(&["init"], &dir);
+    assert!(out.status.success(), "dcr init should succeed");
+
+    let envs = [("DCR_CC", compiler)];
+    let out_init = run_dcr_env(&["test", "--init"], &dir, &envs);
+    assert!(out_init.status.success(), "dcr test --init should succeed");
+
+    let out = run_dcr_env(&["test"], &dir, &envs);
+    assert!(out.status.success(), "dcr test should succeed");
+    let stdout = String::from_utf8_lossy(&out.stdout);
+    let stderr = String::from_utf8_lossy(&out.stderr);
+    assert!(stdout.contains("TOTAL: 1"), "TOTAL summary line missing");
+    assert!(
+        stdout.contains("PASS:  1"),
+        "PASS summary line missing\nstdout:\n{}\nstderr:\n{}",
+        stdout,
+        stderr
+    );
+}