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

AGENT.md

@@ -0,0 +1,126 @@
+# AGENT.md
+
+## Project Overview
+
+**DCR (Dexoron Cargo Realization)** — CLI-утилита для управления C/C++/ASM проектами в стиле Cargo.
+
+- **Язык реализации**: Rust (edition 2024)
+- **Лицензия**: MIT
+- **Репозиторий**: [github.com/dexoron/dcr](https://github.com/dexoron/dcr)
+
+## Architecture
+
+### Source Tree (`src/`)
+
+```
+src/
+├── main.rs          # Точка входа, маршрутизация CLI-команд
+├── config.rs        # Глобальные константы: профили сборки, шаблон main.c
+├── cli/             # Реализация CLI-команд
+│   ├── new.rs       # dcr new <name>
+│   ├── init.rs      # dcr init
+│   ├── build.rs     # dcr build [--debug|--release]
+│   ├── run.rs       # dcr run [--debug|--release]
+│   ├── clean.rs     # dcr clean [--all]
+│   ├── help.rs      # dcr --help
+│   └── flag_update.rs  # dcr --update (self-update через GitHub Releases)
+├── core/            # Бизнес-логика
+│   ├── config.rs    # Парсинг/валидация/форматирование dcr.toml (struct Config)
+│   ├── deps.rs      # Разрешение path-зависимостей, генерация dcr.lock
+│   ├── runner.rs    # Запуск скомпилированного бинарника
+│   ├── workspace.rs # Поддержка [workspace] и упорядочивание сборки
+│   └── builder/     # Бэкенды компиляторов/ассемблеров
+│       ├── mod.rs   # Общий интерфейс сборки
+│       ├── gcc.rs   # GCC backend
+│       ├── clang.rs # Clang backend
+│       ├── msvc.rs  # MSVC backend
+│       ├── nasm.rs  # NASM backend (ASM)
+│       └── gas.rs   # GAS backend (ASM)
+├── platform/        # Платформенно-зависимая логика
+│   ├── mod.rs       # Общий интерфейс платформ
+│   ├── linux.rs
+│   ├── macos.rs
+│   └── windows.rs
+└── utils/           # Вспомогательные утилиты
+    ├── fs.rs        # Работа с файловой системой
+    ├── log.rs       # Логирование (error, warn)
+    └── text.rs      # Форматирование текста / цвета
+```
+
+### Key Concepts
+
+- **`dcr.toml`** — конфигурационный файл проекта (аналог `Cargo.toml`). Секции: `[package]`, `[build]`, `[toolchain]`, `[dependencies]`, `[workspace]`.
+- **Профили сборки**: `debug` (по умолчанию) и `release`. Встроенные флаги зависят от компилятора. Пользовательские флаги через `build.cflags` / `build.ldflags`.
+- **Инкрементальная сборка**: объектные файлы кешируются по mtime. Отслеживание заголовков пока не реализовано (см. `TODO.md`).
+- **Workspace**: корневой `dcr.toml` с секцией `[workspace]` описывает member-проекты и их зависимости; сборка происходит в топологическом порядке.
+- **Path dependencies**: зависимости по путям автоматически добавляют include/lib-пути; генерируется `dcr.lock`.
+- **Build kinds**: `bin` (бинарник), `staticlib` (`.a`), `sharedlib` (`.so`/`.dylib`/`.dll`).
+
+## Supported Platforms
+
+| Platform | Target triple |
+|---|---|
+| Linux | `x86_64-unknown-linux-gnu` |
+| macOS Intel | `x86_64-apple-darwin` |
+| macOS ARM | `aarch64-apple-darwin` |
+| Windows | `x86_64-pc-windows-msvc` |
+
+## Dependencies (Cargo)
+
+| Crate | Purpose |
+|---|---|
+| `reqwest` | HTTP-запросы для `--update` (blocking, rustls-tls) |
+| `serde` | Сериализация/десериализация |
+| `toml` | Парсинг `dcr.toml` |
+| `sha2` | Хеширование при обновлении |
+| `self-replace` | Замена бинарника при `--update` |
+
+## Development
+
+### Build & Run
+
+```bash
+cargo build             # debug build
+cargo build --release   # release build
+cargo run -- new hello  # создать проект "hello"
+```
+
+### Code Quality
+
+```bash
+cargo fmt --all
+cargo clippy --all-targets --all-features -- -D warnings
+cargo check
+cargo test
+```
+
+### CI/CD
+
+- **CI**: `.github/workflows/ci.yml` — проверки при PR/push
+- **Release**: `.github/workflows/release.yml` — сборка бинарников при пуше тега `v*`
+
+### Tests
+
+- Интеграционные CLI-тесты: `tests/cli_basic.rs`
+
+## Code Conventions
+
+- Rust stable edition 2024
+- Форматирование: `cargo fmt`
+- Линтинг: `cargo clippy` без warnings
+- Функции — маленькие и сфокусированные
+- Имена — понятные и описательные
+- Пользовательские сообщения CLI — на английском языке
+- Вывод ошибок/предупреждений через `utils::log::{error, warn}`
+
+## TODO
+
+- В файле `TODO.md`
+
+## Useful Links
+
+- Документация проекта: `docs/`
+- Changelog: `CHANGELOG.md`
+- Contributing: `CONTRIBUTING.md`
+- FAQ: `FAQ.md`
+- Установка: `install.sh` (Linux/macOS), `install.ps1` (Windows)

CHANGELOG.md

@@ -1,10 +1,46 @@
 # Changelog
 
-## [0.2.8] - 2026-03-06
+## [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`
+- Step command variables (`{uic}`, `{moc}`, `{rcc}`, `{cflags}`, `{stem}`, `{in}`, `{out}`)
+- `{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
@@ -13,12 +49,16 @@ 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
@@ -26,24 +66,31 @@ 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
@@ -51,20 +98,26 @@ 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
@@ -73,31 +126,40 @@ 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

Cargo.lock

@@ -90,8 +90,9 @@ dependencies = [
 
 [[package]]
 name = "dcr"
-version = "0.2.8"
+version = "0.3.0"
 dependencies = [
+ "glob",
  "reqwest",
  "self-replace",
  "serde",
@@ -262,6 +263,12 @@ dependencies = [
  "wasip3",
 ]
 
+[[package]]
+name = "glob"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0cc23270f6e1808e30a928bdc84dea0b9b4136a8bc82338574f23baf47bbd280"
+
 [[package]]
 name = "hashbrown"
 version = "0.15.5"

Cargo.toml

@@ -1,10 +1,11 @@
 [package]
 name = "dcr"
-version = "0.2.8"
+version = "0.3.0"
 edition = "2024"
 build = "build.rs"
 
 [dependencies]
+glob = "0.3"
 reqwest = { version = "0.12", default-features = false, features = ["blocking", "json", "rustls-tls"] }
 serde = { version = "1", features = ["derive"] }
 self-replace = "1"

README.md

@@ -14,9 +14,11 @@ 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)
 - Update the binary via `dcr --update` (GitHub Releases, not for pacman/AUR installs)
 
 ## Supported Platforms
@@ -104,9 +106,11 @@ 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>`
@@ -121,11 +125,16 @@ Two profiles are supported:
 - `--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.
 
 ## Configuration
 The main project file is `dcr.toml`.
@@ -146,6 +155,10 @@ 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 +167,9 @@ ldflags = ["-lm"]
 # as = "as"
 # ar = "ar"
 # ld = "ld"
+# uic = "uic"
+# moc = "moc"
+# rcc = "rcc"
 
 [dependencies]
 ```

TODO.md

@@ -1,6 +1,9 @@
 # TODO
 
-- Add header dependency tracking for incremental builds (GCC/Clang: -MMD, MSVC: /showIncludes)
 - Add external package managers (Conan, vcpkg)
 - Linker script + direct linker control
-- Custom targets/steps
+- Custom targets/steps
+- Cross-compilation and freestanding targets (-nostdinc, -nostdlib, custom target triple like i686-elf)
+- Mixed C + ASM in one project (compile .c and .s/.S sources together)
+- Per-member include directories in workspace (e.g. include paths for subprojects)
+- Build-time code generation (auto-generated headers, pre-build scripts)

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 +24,7 @@
 * [dcr build](commands/dcr-build.md)
 * [dcr run](commands/dcr-run.md)
 * [dcr clean](commands/dcr-clean.md)
+* [dcr gen](commands/dcr-gen.md)
 
 ## Dependencies & Build
 

docs/commands/dcr-build.md

@@ -8,6 +8,8 @@ Builds the project in `debug` or `release` profile.
 dcr build
 dcr build --debug
 dcr build --release
+dcr build --release --force
+dcr build --debug --clean
 ```
 
 ## What `build` does
@@ -30,17 +32,33 @@ 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.
 - Unknown profile flags return an error.
 - Incremental rebuild is based on source/object mtime comparison.
+- `--force` skips build cache checks and recompiles.
+- `--clean` removes `target/<profile>` and `build.clean` paths before building.
 - 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 +1,168 @@
+# 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`
+
+### `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`
+
+### 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 +8,8 @@ Builds the project and runs the resulting binary.
 dcr run
 dcr run --debug
 dcr run --release
+dcr run --release --force
+dcr run --debug --clean
 ```
 
 ## Behavior
@@ -16,11 +18,20 @@ 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.
+- `--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/configuration/build-profiles.md

@@ -14,16 +14,18 @@ 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 -DDEBUG`
+- `debug`: `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDCR_DEBUG`
 - `release`: `-O3 -DNDEBUG -march=native`
 
 ### MSVC toolchain
 
-- `debug`: `/Od /Zi /W4 /DDEBUG /Oy-`
+- `debug`: `/Od /Zi /W4 /DDCR_DEBUG /Oy-`
 - `release`: `/O2 /DNDEBUG`
 
 ## Artifacts
@@ -37,12 +39,12 @@ Default compiler flags:
 
 GCC/Clang:
 
-- `debug`: `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDEBUG`
+- `debug`: `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDCR_DEBUG`
 - `release`: `-O3 -DNDEBUG -march=native`
 
 MSVC:
 
-- `debug`: `/Od /Zi /W4 /DDEBUG /Oy-`
+- `debug`: `/Od /Zi /W4 /DDCR_DEBUG /Oy-`
 - `release`: `/O2 /DNDEBUG`
 
 Static library mode (`kind = "staticlib"`):
@@ -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

@@ -13,11 +13,20 @@ kind = "bin"
 # 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`.
@@ -25,6 +34,62 @@ kind = "bin"
 - `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.
+
+```toml
+[build.debug]
+cflags = ["-g3"]
+
+[build.release]
+cflags = ["-O3"]
+ldflags = ["-s"]
+```
 
 ## Toolchain section
 
@@ -35,6 +100,9 @@ cxx = "clang++"
 as = "as"
 ar = "ar"
 ld = "ld"
+uic = "uic"
+moc = "moc"
+rcc = "rcc"
 ```
 
 ## Behavior notes

docs/configuration/dcr.toml-overview.md

@@ -45,6 +45,19 @@ Workspace-only root:
 - `build.target`
 - `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`
 - dependency fields (`include`, `lib`, `libs`, `system`)
-- `[toolchain]` overrides (`cc`, `cxx`, `as`, `ar`, `ld`)
+- `[toolchain]` overrides (`cc`, `cxx`, `as`, `ar`, `ld`, `uic`, `moc`, `rcc`)
 - `[workspace]` members
+- `[run]` overrides (`cmd`)

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`.
+- `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/<profile>/obj/<relative-path>.o` (`.obj` on MSVC).
 - 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
 
@@ -24,12 +27,12 @@ These flags are applied automatically based on profile and compiler backend.
 
 GCC/Clang:
 
-- `debug`: `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDEBUG`
+- `debug`: `-O0 -g -Wall -Wextra -fno-omit-frame-pointer -DDCR_DEBUG`
 - `release`: `-O3 -DNDEBUG -march=native`
 
 MSVC:
 
-- `debug`: `/Od /Zi /W4 /DDEBUG /Oy-`
+- `debug`: `/Od /Zi /W4 /DDCR_DEBUG /Oy-`
 - `release`: `/O2 /DNDEBUG`
 
 ## Platform hint
@@ -46,10 +49,12 @@ 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/local-dependencies.md

@@ -11,6 +11,11 @@ For each dependency in `[dependencies]`, DCR:
 5. Synchronizes dependency files to `target/<profile>/deps/<dep-name>/`.
 6. Adds include/lib/link options to compile/link commands.
 
+### Profile placeholders
+
+`path`, `include`, and `lib` entries may use `{profile}` which expands to the active profile
+(`debug` or `release`).
+
 ## Failure cases
 
 - Dependency path is missing or not a directory.

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

@@ -8,6 +8,7 @@ Debug (default):
 dcr build
 # or
 dcr build --debug
+dcr build --debug --clean
 ```
 
 Release:
@@ -22,6 +23,7 @@ dcr build --release
 dcr run
 # or
 dcr run --release
+dcr run --release --force
 ```
 
 `dcr run` first builds, then launches the produced binary.
@@ -47,3 +49,4 @@ dcr clean --release --all
 - Build profile flag is parsed from the first command argument.
 - Unknown profile flags produce an error.
 - In workspace root, `clean --all` cleans all member projects.
+- `--clean` for `build`/`run` removes `target/<profile>` and paths from `build.clean`.

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`)
 

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;
 
@@ -85,6 +86,7 @@ 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 +99,33 @@ 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)
+                );
             }
-            println!("    Profile: {}", colored(profile, BOLD_GREEN));
+            clean_custom_paths(&config, profile)?;
-            let _ = fs::remove_dir_all(format!("target/{profile}"));
-            println!(
-                "{} Removed directory target/{profile}",
-                colored("\n    ✔", BOLD_GREEN)
-            );
             return Ok(());
         }
 
-        let _ = fs::remove_dir_all("target");
+        if items.contains(&"target".to_string()) {
-        println!(
+            let _ = fs::remove_dir_all("target");
-            "{} Removed directory target",
+            println!(
-            colored("\n    ✔", BOLD_GREEN)
+                "{} 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 +140,86 @@ 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 +1,46 @@
+use crate::config::{PROFILE, flags};
+use crate::utils::log::warn;
+
+pub struct BuildRunFlags {
+    pub profile: 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 force = false;
+    let mut clean = false;
+
+    for arg in args {
+        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 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,
+        force,
+        clean,
+    })
+}

src/cli/help.rs

@@ -13,14 +13,18 @@ pub fn help() -> i32 {
     println!("    build [--profile] Build the project (default: --debug)");
     println!("    run [--profile]   Build and run the project (default: --debug)");
     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/mod.rs

@@ -1,6 +1,8 @@
 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;

src/cli/run.rs

@@ -1,15 +1,14 @@
 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;
 
 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 +50,45 @@ 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 = config
-            warn("Unknown argument");
+        .get("run.cmd")
-            return 1;
+        .and_then(|v| v.as_str())
-        }
+        .map(|s| s.trim().to_string())
-    }
+        .filter(|s| !s.is_empty())
+        .map(|cmd| substitute_run_vars(&cmd, &flags.profile, version));
 
     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 +107,65 @@ 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/config.rs

@@ -16,7 +16,7 @@ pub fn flags(profile: &str) -> Option<&'static [&'static str]> {
             "-Wall",
             "-Wextra",
             "-fno-omit-frame-pointer",
-            "-DDEBUG",
+            "-DDCR_DEBUG",
         ]),
         _ => None,
     }

src/core/builder/common.rs

@@ -0,0 +1,623 @@
+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();
+    for root in roots {
+        collect_sources_rec(root, extensions, &mut sources, exclude_dirs, include_paths)?;
+    }
+    sources.sort();
+    if sources.is_empty() {
+        return Err(format!("No source files found in {}", format_roots(roots)));
+    }
+    Ok(sources)
+}
+
+fn collect_sources_rec(
+    dir: &Path,
+    extensions: &[&str],
+    out: &mut Vec<String>,
+    exclude_dirs: &[PathBuf],
+    include_paths: &[String],
+) -> Result<(), String> {
+    let full_dir = if dir.is_absolute() {
+        dir.to_path_buf()
+    } else {
+        std::env::current_dir()
+            .map_err(|err| format!("src dir error: {err}"))?
+            .join(dir)
+    };
+    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}"))?;
+    for entry in entries {
+        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, include_paths) && include_paths.is_empty() {
+                continue;
+            }
+            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
+            .iter()
+            .any(|allowed| *allowed == ext_raw || *allowed == ext_lower);
+        if matched {
+            out.push(normalize_source_path(&path));
+        }
+    }
+    Ok(())
+}
+
+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();
+    }
+    if let Ok(base) = std::env::current_dir()
+        && let Ok(rel) = path.strip_prefix(&base)
+    {
+        return format!("./{}", rel.to_string_lossy());
+    }
+    path.to_string_lossy().to_string()
+}
+
+pub fn object_path(obj_dir: &Path, source: &str, obj_ext: &str) -> String {
+    let src_path = Path::new(source);
+    let rel = src_path
+        .strip_prefix("./src")
+        .or_else(|_| src_path.strip_prefix("src"))
+        .unwrap_or(src_path);
+    let mut out = obj_dir.join(rel);
+    out.set_extension(obj_ext.trim_start_matches('.'));
+    out.to_string_lossy().to_string()
+}
+
+pub fn needs_rebuild(source: &str, object: &str) -> bool {
+    let src_time = fs::metadata(source).and_then(|m| m.modified());
+    let obj_time = fs::metadata(object).and_then(|m| m.modified());
+    let o_time = match obj_time {
+        Ok(t) => t,
+        Err(_) => return true,
+    };
+    match src_time {
+        Ok(s) if s > o_time => return true,
+        Err(_) => return true,
+        _ => {}
+    }
+
+    let d_file = PathBuf::from(object).with_extension("d");
+    if let Ok(content) = fs::read_to_string(&d_file) {
+        let deps = parse_d_file(&content);
+        for dep in deps {
+            let dep_path = Path::new(&dep);
+            if dep_path == Path::new(object) || dep_path == Path::new(source) {
+                continue;
+            }
+            if let Ok(dep_meta) = fs::metadata(dep_path) {
+                if let Ok(dep_time) = dep_meta.modified()
+                    && dep_time > o_time
+                {
+                    return true;
+                }
+            } else {
+                return true; // Missing dependency triggers rebuild
+            }
+        }
+    }
+    false
+}
+
+fn parse_d_file(content: &str) -> Vec<String> {
+    let mut deps = Vec::new();
+    let text = content.replace("\\\n", " ").replace("\\\r\n", " ");
+    let mut target_end = 0;
+    let chars: Vec<char> = text.chars().collect();
+    for i in 0..chars.len() {
+        if chars[i] == ':' {
+            if i == 1
+                && chars[0].is_ascii_alphabetic()
+                && i + 1 < chars.len()
+                && (chars[i + 1] == '\\' || chars[i + 1] == '/')
+            {
+                continue; // Windows drive letter
+            }
+            target_end = i + 1;
+            break;
+        }
+    }
+
+    let deps_str = if target_end > 0 {
+        &text[target_end..]
+    } else {
+        &text
+    };
+
+    let mut current_path = String::new();
+    let mut in_escape = false;
+
+    for c in deps_str.chars() {
+        if in_escape {
+            if c != '\n' && c != '\r' {
+                current_path.push(c);
+            }
+            in_escape = false;
+        } else if c == '\\' {
+            in_escape = true;
+        } else if c.is_whitespace() {
+            if !current_path.is_empty() {
+                deps.push(current_path.clone());
+                current_path.clear();
+            }
+        } else {
+            current_path.push(c);
+        }
+    }
+    if !current_path.is_empty() {
+        deps.push(current_path);
+    }
+    deps
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::fs;
+    use std::path::PathBuf;
+    use std::sync::Mutex;
+    use std::sync::atomic::{AtomicUsize, Ordering};
+
+    static TEST_COUNTER: AtomicUsize = AtomicUsize::new(0);
+    static CWD_LOCK: Mutex<()> = Mutex::new(());
+
+    fn temp_dir(prefix: &str) -> PathBuf {
+        let n = TEST_COUNTER.fetch_add(1, Ordering::SeqCst);
+        let dir = std::env::temp_dir().join(format!("dcr_test_{prefix}_{n}"));
+        let _ = fs::remove_dir_all(&dir);
+        fs::create_dir_all(&dir).unwrap();
+        dir
+    }
+
+    fn default_roots() -> Vec<PathBuf> {
+        vec![PathBuf::from("src")]
+    }
+
+    #[test]
+    fn object_path_basic() {
+        let obj_dir = Path::new("target/debug/obj");
+        let result = object_path(obj_dir, "./src/main.c", "o");
+        assert_eq!(result, "target/debug/obj/main.o");
+    }
+
+    #[test]
+    fn object_path_nested() {
+        let obj_dir = Path::new("target/debug/obj");
+        let result = object_path(obj_dir, "./src/core/utils.c", "o");
+        assert_eq!(result, "target/debug/obj/core/utils.o");
+    }
+
+    #[test]
+    fn object_path_no_prefix() {
+        let obj_dir = Path::new("target/debug/obj");
+        let result = object_path(obj_dir, "src/main.c", "o");
+        assert_eq!(result, "target/debug/obj/main.o");
+    }
+
+    #[test]
+    fn object_path_msvc_ext() {
+        let obj_dir = Path::new("target/debug/obj");
+        let result = object_path(obj_dir, "./src/main.c", "obj");
+        assert_eq!(result, "target/debug/obj/main.obj");
+    }
+
+    #[test]
+    fn needs_rebuild_no_object() {
+        let dir = temp_dir("rebuild_no_obj");
+        let src = dir.join("test.c");
+        fs::write(&src, "int main() {}").unwrap();
+        let obj = dir.join("test.o");
+        assert!(needs_rebuild(
+            &src.to_string_lossy(),
+            &obj.to_string_lossy()
+        ));
+    }
+
+    #[test]
+    fn needs_rebuild_fresh() {
+        let dir = temp_dir("rebuild_fresh");
+        let src = dir.join("test.c");
+        let obj = dir.join("test.o");
+        fs::write(&src, "int main() {}").unwrap();
+        // Sleep briefly to ensure mtime difference
+        std::thread::sleep(std::time::Duration::from_millis(50));
+        fs::write(&obj, "").unwrap();
+        assert!(!needs_rebuild(
+            &src.to_string_lossy(),
+            &obj.to_string_lossy()
+        ));
+    }
+
+    #[test]
+    fn needs_rebuild_stale() {
+        let dir = temp_dir("rebuild_stale");
+        let src = dir.join("test.c");
+        let obj = dir.join("test.o");
+        fs::write(&obj, "").unwrap();
+        std::thread::sleep(std::time::Duration::from_millis(50));
+        fs::write(&src, "int main() { return 1; }").unwrap();
+        assert!(needs_rebuild(
+            &src.to_string_lossy(),
+            &obj.to_string_lossy()
+        ));
+    }
+
+    #[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,
+            &include
+        ));
+        assert!(is_excluded(
+            Path::new("/project/src/vendor/lib.c"),
+            &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,
+            &include
+        ));
+        assert!(!is_excluded(
+            Path::new("/other/vendor"),
+            &excluded,
+            &include
+        ));
+    }
+
+    #[test]
+    fn collect_sources_c_files() {
+        let dir = temp_dir("collect_c");
+        let src = dir.join("src");
+        fs::create_dir_all(&src).unwrap();
+        fs::write(src.join("main.c"), "").unwrap();
+        fs::write(src.join("utils.c"), "").unwrap();
+        fs::write(src.join("README.md"), "").unwrap(); // should be ignored
+
+        let _guard = CWD_LOCK.lock().unwrap();
+        let prev = std::env::current_dir().unwrap();
+        std::env::set_current_dir(&dir).unwrap();
+        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);
+        assert!(sources.iter().any(|s| s.ends_with("main.c")));
+        assert!(sources.iter().any(|s| s.ends_with("utils.c")));
+    }
+
+    #[test]
+    fn collect_sources_cpp_files() {
+        let dir = temp_dir("collect_cpp");
+        let src = dir.join("src");
+        fs::create_dir_all(&src).unwrap();
+        fs::write(src.join("main.cpp"), "").unwrap();
+        fs::write(src.join("helper.cxx"), "").unwrap();
+        fs::write(src.join("other.cc"), "").unwrap();
+        fs::write(src.join("skip.c"), "").unwrap(); // should be ignored
+
+        let _guard = CWD_LOCK.lock().unwrap();
+        let prev = std::env::current_dir().unwrap();
+        std::env::set_current_dir(&dir).unwrap();
+        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");
+        assert_eq!(sources.len(), 3);
+    }
+
+    #[test]
+    fn collect_sources_empty_dir() {
+        let dir = temp_dir("collect_empty");
+        let src = dir.join("src");
+        fs::create_dir_all(&src).unwrap();
+
+        let _guard = CWD_LOCK.lock().unwrap();
+        let prev = std::env::current_dir().unwrap();
+        std::env::set_current_dir(&dir).unwrap();
+        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");
+    }
+
+    #[test]
+    fn collect_sources_respects_excludes() {
+        let dir = temp_dir("collect_exclude");
+        let src = dir.join("src");
+        let vendor = src.join("vendor");
+        fs::create_dir_all(&vendor).unwrap();
+        fs::write(src.join("main.c"), "").unwrap();
+        fs::write(vendor.join("lib.c"), "").unwrap(); // should be excluded
+
+        let exclude = vec![vendor.clone()];
+        let _guard = CWD_LOCK.lock().unwrap();
+        let prev = std::env::current_dir().unwrap();
+        std::env::set_current_dir(&dir).unwrap();
+        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");
+        assert_eq!(sources.len(), 1);
+        assert!(sources[0].ends_with("main.c"));
+    }
+
+    #[test]
+    fn collect_sources_nested() {
+        let dir = temp_dir("collect_nested");
+        let src = dir.join("src");
+        let sub = src.join("core").join("deep");
+        fs::create_dir_all(&sub).unwrap();
+        fs::write(src.join("main.c"), "").unwrap();
+        fs::write(sub.join("nested.c"), "").unwrap();
+
+        let _guard = CWD_LOCK.lock().unwrap();
+        let prev = std::env::current_dir().unwrap();
+        std::env::set_current_dir(&dir).unwrap();
+        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"));
+        assert_eq!(result, "./src/main.c");
+    }
+
+    #[test]
+    fn parse_d_file_gcc_format() {
+        let content = "target/obj/main.o: src/main.c src/utils.h \\\n src/core/types.h";
+        let deps = parse_d_file(content);
+        assert_eq!(deps, vec!["src/main.c", "src/utils.h", "src/core/types.h"]);
+    }
+
+    #[test]
+    fn parse_d_file_msvc_format() {
+        let content = "target/obj/main.obj: \\\n  C:/sdk/include/windows.h \\\n  src/main.c";
+        let deps = parse_d_file(content);
+        assert_eq!(deps, vec!["C:/sdk/include/windows.h", "src/main.c"]);
+    }
+
+    #[test]
+    fn needs_rebuild_header_modified() {
+        let dir = temp_dir("rebuild_header");
+        let src = dir.join("test.c");
+        let header = dir.join("test.h");
+        let obj = dir.join("test.o");
+        let d_file = dir.join("test.d");
+
+        fs::write(&src, "int main() {}").unwrap();
+        fs::write(&header, "#define A 1").unwrap();
+        std::thread::sleep(std::time::Duration::from_millis(50));
+        fs::write(&obj, "").unwrap();
+
+        let d_content = format!(
+            "{}: {} {}",
+            obj.to_string_lossy(),
+            src.to_string_lossy(),
+            header.to_string_lossy()
+        );
+        fs::write(&d_file, d_content).unwrap();
+
+        assert!(
+            !needs_rebuild(&src.to_string_lossy(), &obj.to_string_lossy()),
+            "should be fresh"
+        );
+
+        std::thread::sleep(std::time::Duration::from_millis(50));
+        fs::write(&header, "#define A 2").unwrap(); // modify header
+
+        assert!(
+            needs_rebuild(&src.to_string_lossy(), &obj.to_string_lossy()),
+            "changed header should trigger rebuild"
+        );
+    }
+}

src/core/builder/gas.rs

@@ -1,12 +1,14 @@
 use crate::core::builder::BuildContext;
+use crate::core::builder::common;
 use crate::platform;
 use std::fs;
-use std::path::{Path, PathBuf};
+use std::path::Path;
 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() {
@@ -15,7 +17,7 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
         ctx.compiler
     };
     let start_time = Instant::now();
-    let sources = collect_sources(ctx.language, ctx.exclude_dirs)?;
+    let sources = collect_sources(ctx)?;
     let obj_dir = Path::new("./target").join(ctx.profile).join("obj");
     let objects = build_objects(assembler, &sources, &obj_dir, ctx, "o")?;
 
@@ -35,6 +37,9 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
         for obj in &objects {
             cmd.arg(obj);
         }
+        if std::env::var("DCR_DEBUG").is_ok() {
+            eprintln!("[dcr] {:?}", cmd);
+        }
         match cmd.status() {
             Ok(status) if status.success() => {
                 let elapsed = ((start_time.elapsed().as_secs_f64() * 100.0).trunc()) / 100.0;
@@ -72,6 +77,9 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     };
     cmd.arg("-o").arg(out_path);
 
+    if std::env::var("DCR_DEBUG").is_ok() {
+        eprintln!("[dcr] {:?}", cmd);
+    }
     match cmd.status() {
         Ok(status) if status.success() => {
             let elapsed = ((start_time.elapsed().as_secs_f64() * 100.0).trunc()) / 100.0;
@@ -82,76 +90,14 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     }
 }
 
-pub(crate) fn collect_sources(
+pub(crate) fn collect_sources(ctx: &BuildContext) -> Result<Vec<String>, String> {
-    language: &str,
+    // GAS handles only lowercase .s files
-    exclude_dirs: &[PathBuf],
+    common::collect_sources(
-) -> Result<Vec<String>, String> {
+        ctx.source_roots,
-    let lang = language.to_lowercase();
+        &["s"],
-    let mut sources = Vec::new();
+        ctx.exclude_dirs,
-    collect_sources_rec("./src", &lang, &mut sources, exclude_dirs)?;
+        ctx.include_paths,
-    sources.sort();
+    )
-    if sources.is_empty() {
-        return Err("No source files found in ./src".to_string());
-    }
-    Ok(sources)
-}
-
-fn collect_sources_rec(
-    dir: &str,
-    lang: &str,
-    out: &mut Vec<String>,
-    exclude_dirs: &[PathBuf],
-) -> Result<(), String> {
-    let dir_path = Path::new(dir);
-    let full_dir = if dir_path.is_absolute() {
-        dir_path.to_path_buf()
-    } else {
-        std::env::current_dir()
-            .map_err(|err| format!("src dir error: {err}"))?
-            .join(dir_path)
-    };
-    if is_excluded(&full_dir, exclude_dirs) {
-        return Ok(());
-    }
-    let entries = fs::read_dir(&full_dir).map_err(|err| format!("src dir error: {err}"))?;
-    for entry in entries {
-        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) {
-                continue;
-            }
-            collect_sources_rec(&path.to_string_lossy(), lang, out, exclude_dirs)?;
-            continue;
-        }
-        if !path.is_file() {
-            continue;
-        }
-        let ext_raw = path.extension().and_then(|v| v.to_str()).unwrap_or("");
-        let ext = ext_raw.to_lowercase();
-        let file = normalize_source_path(&path);
-        let allowed = lang == "asm" && ext == "s" && ext_raw == "s";
-        if allowed {
-            out.push(file);
-        }
-    }
-    Ok(())
-}
-
-fn is_excluded(path: &Path, exclude_dirs: &[PathBuf]) -> bool {
-    exclude_dirs.iter().any(|dir| path.starts_with(dir))
-}
-
-fn normalize_source_path(path: &Path) -> String {
-    if !path.is_absolute() {
-        return path.to_string_lossy().to_string();
-    }
-    if let Ok(base) = std::env::current_dir()
-        && let Ok(rel) = path.strip_prefix(&base)
-    {
-        return format!("./{}", rel.to_string_lossy());
-    }
-    path.to_string_lossy().to_string()
 }
 
 fn build_objects(
@@ -163,11 +109,11 @@ fn build_objects(
 ) -> Result<Vec<String>, String> {
     let mut objects = Vec::new();
     for source in sources {
-        let obj_path = object_path(obj_dir, source, obj_ext);
+        let obj_path = common::object_path(obj_dir, source, obj_ext);
         if let Some(parent) = Path::new(&obj_path).parent() {
             fs::create_dir_all(parent).map_err(|err| format!("obj dir error: {err}"))?;
         }
-        if needs_rebuild(source, &obj_path) {
+        if common::needs_rebuild(source, &obj_path) {
             let mut cmd = Command::new(assembler);
             cmd.arg(source).arg("-o").arg(&obj_path);
             for flag in ctx.cflags {
@@ -183,24 +129,3 @@ fn build_objects(
     }
     Ok(objects)
 }
-
-fn object_path(obj_dir: &Path, source: &str, obj_ext: &str) -> String {
-    let src_path = Path::new(source);
-    let rel = src_path
-        .strip_prefix("./src")
-        .or_else(|_| src_path.strip_prefix("src"))
-        .unwrap_or(src_path);
-    let mut out = obj_dir.join(rel);
-    out.set_extension(obj_ext.trim_start_matches('.'));
-    out.to_string_lossy().to_string()
-}
-
-fn needs_rebuild(source: &str, object: &str) -> bool {
-    let src_time = fs::metadata(source).and_then(|m| m.modified());
-    let obj_time = fs::metadata(object).and_then(|m| m.modified());
-    match (src_time, obj_time) {
-        (Ok(s), Ok(o)) => s > o,
-        (Ok(_), Err(_)) => true,
-        _ => true,
-    }
-}

src/core/builder/gcc.rs

@@ -1,250 +0,0 @@
-use crate::core::builder::BuildContext;
-use crate::platform;
-use std::fs;
-use std::path::{Path, PathBuf};
-use std::process::Command;
-use std::time::Instant;
-
-pub fn build(ctx: &BuildContext) -> Result<f64, String> {
-    let compiler = if ctx.compiler.is_empty() {
-        "cc"
-    } else {
-        ctx.compiler
-    };
-    let start_time = Instant::now();
-    let sources = collect_sources(ctx.language, ctx.exclude_dirs)?;
-    let obj_dir = Path::new("./target").join(ctx.profile).join("obj");
-    let objects = build_objects(compiler, &sources, &obj_dir, ctx, "o")?;
-
-    if ctx.kind == "staticlib" {
-        let lib_path = platform::lib_path(ctx.profile, ctx.project_name, ctx.target_dir);
-        let mut cmd = Command::new(ctx.archiver.unwrap_or("ar"));
-        cmd.arg("rcs").arg(&lib_path);
-        for obj in &objects {
-            cmd.arg(obj);
-        }
-        match cmd.status() {
-            Ok(status) if status.success() => {
-                let elapsed = ((start_time.elapsed().as_secs_f64() * 100.0).trunc()) / 100.0;
-                return Ok(elapsed);
-            }
-            Ok(_) => return Err("Build failed".to_string()),
-            Err(err) => return Err(format!("Build failed: {err}")),
-        }
-    }
-
-    let mut cmd = Command::new(ctx.linker.unwrap_or(compiler));
-    if ctx.kind == "sharedlib" {
-        if cfg!(target_os = "macos") {
-            cmd.arg("-dynamiclib");
-        } else {
-            cmd.arg("-shared");
-        }
-    }
-    for obj in &objects {
-        cmd.arg(obj);
-    }
-    for flag in default_flags(ctx.profile) {
-        cmd.arg(flag);
-    }
-    for flag in ctx.cflags {
-        cmd.arg(flag);
-    }
-    for dir in ctx.lib_dirs {
-        cmd.arg(format!("-L{dir}"));
-    }
-    for lib in ctx.libs {
-        cmd.arg(format!("-l{lib}"));
-    }
-    for flag in ctx.ldflags {
-        cmd.arg(flag);
-    }
-    let out_path = if ctx.kind == "sharedlib" {
-        platform::shared_lib_path(ctx.profile, ctx.project_name, ctx.target_dir)
-    } else {
-        platform::bin_path(ctx.profile, ctx.project_name, ctx.target_dir)
-    };
-    cmd.arg("-o").arg(out_path);
-
-    match cmd.status() {
-        Ok(status) if status.success() => {
-            let elapsed = ((start_time.elapsed().as_secs_f64() * 100.0).trunc()) / 100.0;
-            Ok(elapsed)
-        }
-        Ok(_) => Err("Build failed".to_string()),
-        Err(err) => Err(format!("Build failed: {err}")),
-    }
-}
-
-pub(crate) fn collect_sources(
-    language: &str,
-    exclude_dirs: &[PathBuf],
-) -> Result<Vec<String>, String> {
-    let lang = language.to_lowercase();
-    let mut sources = Vec::new();
-    collect_sources_rec("./src", &lang, &mut sources, exclude_dirs)?;
-    sources.sort();
-    if sources.is_empty() {
-        return Err("No source files found in ./src".to_string());
-    }
-    Ok(sources)
-}
-
-fn collect_sources_rec(
-    dir: &str,
-    lang: &str,
-    out: &mut Vec<String>,
-    exclude_dirs: &[PathBuf],
-) -> Result<(), String> {
-    let dir_path = Path::new(dir);
-    let full_dir = if dir_path.is_absolute() {
-        dir_path.to_path_buf()
-    } else {
-        std::env::current_dir()
-            .map_err(|err| format!("src dir error: {err}"))?
-            .join(dir_path)
-    };
-    if is_excluded(&full_dir, exclude_dirs) {
-        return Ok(());
-    }
-    let entries = fs::read_dir(&full_dir).map_err(|err| format!("src dir error: {err}"))?;
-    for entry in entries {
-        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) {
-                continue;
-            }
-            collect_sources_rec(&path.to_string_lossy(), lang, out, exclude_dirs)?;
-            continue;
-        }
-        if !path.is_file() {
-            continue;
-        }
-        let ext = path
-            .extension()
-            .and_then(|v| v.to_str())
-            .unwrap_or("")
-            .to_lowercase();
-        let file = normalize_source_path(&path);
-        let allowed = (lang == "c" && ext == "c")
-            || ((lang == "c++" || lang == "cpp" || lang == "cxx")
-                && (ext == "cpp" || ext == "cxx" || ext == "cc"))
-            || (lang == "asm" && (ext == "s" || ext == "asm"));
-        if allowed {
-            out.push(file);
-        }
-    }
-    Ok(())
-}
-
-fn is_excluded(path: &Path, exclude_dirs: &[PathBuf]) -> bool {
-    exclude_dirs.iter().any(|dir| path.starts_with(dir))
-}
-
-fn normalize_source_path(path: &Path) -> String {
-    if !path.is_absolute() {
-        return path.to_string_lossy().to_string();
-    }
-    if let Ok(base) = std::env::current_dir()
-        && let Ok(rel) = path.strip_prefix(&base)
-    {
-        return format!("./{}", rel.to_string_lossy());
-    }
-    path.to_string_lossy().to_string()
-}
-
-fn default_flags(profile: &str) -> &'static [&'static str] {
-    match profile {
-        "release" => &["-O3", "-DNDEBUG", "-march=native"],
-        "debug" => &[
-            "-O0",
-            "-g",
-            "-Wall",
-            "-Wextra",
-            "-fno-omit-frame-pointer",
-            "-DDEBUG",
-        ],
-        _ => &[],
-    }
-}
-
-fn build_objects(
-    compiler: &str,
-    sources: &[String],
-    obj_dir: &Path,
-    ctx: &BuildContext,
-    obj_ext: &str,
-) -> Result<Vec<String>, String> {
-    let mut objects = Vec::new();
-    for source in sources {
-        let obj_path = object_path(obj_dir, source, obj_ext);
-        if let Some(parent) = Path::new(&obj_path).parent() {
-            fs::create_dir_all(parent).map_err(|err| format!("obj dir error: {err}"))?;
-        }
-        if needs_rebuild(source, &obj_path) {
-            let mut cmd = Command::new(compiler);
-            cmd.arg("-c").arg(source).arg("-o").arg(&obj_path);
-            if ctx.kind == "sharedlib" {
-                cmd.arg("-fPIC");
-            }
-            if let Some(flag) = asm_lang_flag(source) {
-                cmd.arg("-x").arg(flag);
-            }
-            if let Some(platform) = ctx.platform
-                && !platform.trim().is_empty()
-            {
-                cmd.arg(format!("-march={}", platform));
-            }
-            if !ctx.standard.is_empty() && ctx.language.to_lowercase() != "asm" {
-                cmd.arg(format!("-std={}", ctx.standard));
-            }
-            for flag in default_flags(ctx.profile) {
-                cmd.arg(flag);
-            }
-            for flag in ctx.cflags {
-                cmd.arg(flag);
-            }
-            for dir in ctx.include_dirs {
-                cmd.arg(format!("-I{dir}"));
-            }
-            match cmd.status() {
-                Ok(status) if status.success() => {}
-                Ok(_) => return Err("Build failed".to_string()),
-                Err(err) => return Err(format!("Build failed: {err}")),
-            }
-        }
-        objects.push(obj_path);
-    }
-    Ok(objects)
-}
-
-fn asm_lang_flag(source: &str) -> Option<&'static str> {
-    let ext = Path::new(source).extension().and_then(|v| v.to_str())?;
-    match ext {
-        "S" => Some("assembler-with-cpp"),
-        "s" | "asm" => Some("assembler"),
-        _ => None,
-    }
-}
-
-fn object_path(obj_dir: &Path, source: &str, obj_ext: &str) -> String {
-    let src_path = Path::new(source);
-    let rel = src_path
-        .strip_prefix("./src")
-        .or_else(|_| src_path.strip_prefix("src"))
-        .unwrap_or(src_path);
-    let mut out = obj_dir.join(rel);
-    out.set_extension(obj_ext.trim_start_matches('.'));
-    out.to_string_lossy().to_string()
-}
-
-fn needs_rebuild(source: &str, object: &str) -> bool {
-    let src_time = fs::metadata(source).and_then(|m| m.modified());
-    let obj_time = fs::metadata(object).and_then(|m| m.modified());
-    match (src_time, obj_time) {
-        (Ok(s), Ok(o)) => s > o,
-        (Ok(_), Err(_)) => true,
-        _ => true,
-    }
-}

src/core/builder/mod.rs

@@ -1,8 +1,8 @@
-pub mod clang;
+pub mod common;
 pub mod gas;
-pub mod gcc;
 pub mod msvc;
 pub mod nasm;
+pub mod unix_cc;
 
 pub struct BuildContext<'a> {
     pub profile: &'a str,
@@ -15,7 +15,9 @@ pub struct BuildContext<'a> {
     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],
@@ -34,37 +36,22 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     if compiler.contains("nasm") {
         return nasm::build(ctx);
     }
-    if compiler.contains("gcc") || compiler.contains("g++") {
-        return gcc::build(ctx);
-    }
-    if compiler.contains("clang") || compiler.contains("clang++") {
-        return clang::build(ctx);
-    }
     if compiler == "cl" || compiler.contains("msvc") {
         return msvc::build(ctx);
     }
-    clang::build(ctx)
+    unix_cc::build(ctx)
 }
 
 pub fn collect_sources(ctx: &BuildContext) -> Result<Vec<String>, String> {
     let compiler = ctx.compiler.to_lowercase();
-    if compiler.contains("clang-cl") {
+    if compiler.contains("clang-cl") || compiler == "cl" || compiler.contains("msvc") {
-        return msvc::collect_sources(ctx.language, ctx.exclude_dirs);
+        return msvc::collect_sources(ctx);
     }
     if compiler == "as" || compiler.contains("gas") {
-        return gas::collect_sources(ctx.language, ctx.exclude_dirs);
+        return gas::collect_sources(ctx);
     }
     if compiler.contains("nasm") {
-        return nasm::collect_sources(ctx.language, ctx.exclude_dirs);
+        return nasm::collect_sources(ctx);
     }
-    if compiler.contains("gcc") || compiler.contains("g++") {
+    unix_cc::collect_sources(ctx)
-        return gcc::collect_sources(ctx.language, ctx.exclude_dirs);
-    }
-    if compiler.contains("clang") || compiler.contains("clang++") {
-        return clang::collect_sources(ctx.language, ctx.exclude_dirs);
-    }
-    if compiler == "cl" || compiler.contains("msvc") {
-        return msvc::collect_sources(ctx.language, ctx.exclude_dirs);
-    }
-    clang::collect_sources(ctx.language, ctx.exclude_dirs)
 }

src/core/builder/msvc.rs

@@ -1,7 +1,8 @@
 use crate::core::builder::BuildContext;
+use crate::core::builder::common;
 use crate::platform;
 use std::fs;
-use std::path::{Path, PathBuf};
+use std::path::Path;
 use std::process::Command;
 use std::time::Instant;
 
@@ -11,11 +12,12 @@ 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.language, ctx.exclude_dirs)?;
+    let sources = collect_sources(ctx)?;
     let obj_dir = Path::new("./target").join(ctx.profile).join("obj");
     let objects = build_objects(compiler, &sources, &obj_dir, ctx, "obj")?;
 
@@ -26,6 +28,9 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
         for obj in &objects {
             cmd.arg(obj);
         }
+        if std::env::var("DCR_DEBUG").is_ok() {
+            eprintln!("[dcr] {:?}", cmd);
+        }
         match cmd.status() {
             Ok(status) if status.success() => {
                 let elapsed = ((start_time.elapsed().as_secs_f64() * 100.0).trunc()) / 100.0;
@@ -90,6 +95,9 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     };
     cmd.arg(format!("/Fe:{out_path}"));
 
+    if std::env::var("DCR_DEBUG").is_ok() {
+        eprintln!("[dcr] {:?}", cmd);
+    }
     match cmd.status() {
         Ok(status) if status.success() => {
             let elapsed = ((start_time.elapsed().as_secs_f64() * 100.0).trunc()) / 100.0;
@@ -100,82 +108,31 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     }
 }
 
-pub(crate) fn collect_sources(
+pub(crate) fn collect_sources(ctx: &BuildContext) -> Result<Vec<String>, String> {
-    language: &str,
+    let extensions = source_extensions(ctx.language);
-    exclude_dirs: &[PathBuf],
+    common::collect_sources(
-) -> Result<Vec<String>, String> {
+        ctx.source_roots,
-    let lang = language.to_lowercase();
+        &extensions,
-    let mut sources = Vec::new();
+        ctx.exclude_dirs,
-    collect_sources_rec("./src", &lang, &mut sources, exclude_dirs)?;
+        ctx.include_paths,
-    sources.sort();
+    )
-    if sources.is_empty() {
-        return Err("No source files found in ./src".to_string());
-    }
-    Ok(sources)
 }
 
-fn collect_sources_rec(
+fn source_extensions(language: &str) -> Vec<&str> {
-    dir: &str,
+    let mut out = Vec::new();
-    lang: &str,
+    for part in language.split('+') {
-    out: &mut Vec<String>,
+        let lang = part.trim().to_lowercase();
-    exclude_dirs: &[PathBuf],
+        match lang.as_str() {
-) -> Result<(), String> {
+            "c" => out.extend(["c"]),
-    let dir_path = Path::new(dir);
+            "c++" | "cpp" | "cxx" => out.extend(["cpp", "cxx", "cc"]),
-    let full_dir = if dir_path.is_absolute() {
+            "asm" => {}
-        dir_path.to_path_buf()
+            _ => {}
-    } else {
-        std::env::current_dir()
-            .map_err(|err| format!("src dir error: {err}"))?
-            .join(dir_path)
-    };
-    if is_excluded(&full_dir, exclude_dirs) {
-        return Ok(());
-    }
-    let entries = fs::read_dir(&full_dir).map_err(|err| format!("src dir error: {err}"))?;
-    for entry in entries {
-        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) {
-                continue;
-            }
-            collect_sources_rec(&path.to_string_lossy(), lang, out, exclude_dirs)?;
-            continue;
-        }
-        if !path.is_file() {
-            continue;
-        }
-        let ext = path
-            .extension()
-            .and_then(|v| v.to_str())
-            .unwrap_or("")
-            .to_lowercase();
-        let file = normalize_source_path(&path);
-        let allowed = (lang == "c" && ext == "c")
-            || ((lang == "c++" || lang == "cpp" || lang == "cxx")
-                && (ext == "cpp" || ext == "cxx" || ext == "cc"))
-            || (lang == "asm" && (ext == "s" || ext == "asm"));
-        if allowed {
-            out.push(file);
         }
     }
-    Ok(())
+    if out.is_empty() {
-}
+        out.extend(["c"]);
-
-fn is_excluded(path: &Path, exclude_dirs: &[PathBuf]) -> bool {
-    exclude_dirs.iter().any(|dir| path.starts_with(dir))
-}
-
-fn normalize_source_path(path: &Path) -> String {
-    if !path.is_absolute() {
-        return path.to_string_lossy().to_string();
     }
-    if let Ok(base) = std::env::current_dir()
+    out
-        && let Ok(rel) = path.strip_prefix(&base)
-    {
-        return format!("./{}", rel.to_string_lossy());
-    }
-    path.to_string_lossy().to_string()
 }
 
 fn msvc_standard_flag(language: &str, standard: &str) -> Result<String, String> {
@@ -221,7 +178,7 @@ fn msvc_arch_flag(platform: Option<&str>) -> Option<&'static str> {
 fn default_flags(profile: &str) -> &'static [&'static str] {
     match profile {
         "release" => &["/O2", "/DNDEBUG"],
-        "debug" => &["/Od", "/Zi", "/W4", "/DDEBUG", "/Oy-"],
+        "debug" => &["/Od", "/Zi", "/W4", "/DDCR_DEBUG", "/Oy-"],
         _ => &[],
     }
 }
@@ -235,11 +192,11 @@ fn build_objects(
 ) -> Result<Vec<String>, String> {
     let mut objects = Vec::new();
     for source in sources {
-        let obj_path = object_path(obj_dir, source, obj_ext);
+        let obj_path = common::object_path(obj_dir, source, obj_ext);
         if let Some(parent) = Path::new(&obj_path).parent() {
             fs::create_dir_all(parent).map_err(|err| format!("obj dir error: {err}"))?;
         }
-        if needs_rebuild(source, &obj_path) {
+        if common::needs_rebuild(source, &obj_path) {
             let mut cmd = Command::new(compiler);
             cmd.arg("/nologo");
             match ctx.language.to_lowercase().as_str() {
@@ -270,34 +227,57 @@ fn build_objects(
                 cmd.arg(format!("/I{dir}"));
             }
             cmd.arg("/c").arg(source).arg(format!("/Fo:{}", obj_path));
-            match cmd.status() {
+            cmd.arg("/showIncludes");
-                Ok(status) if status.success() => {}
+
-                Ok(_) => return Err("Build failed".to_string()),
+            if std::env::var("DCR_DEBUG").is_ok() {
-                Err(err) => return Err(format!("Build failed: {err}")),
+                eprintln!("[dcr] {:?}", cmd);
             }
+            let output = cmd.output().map_err(|err| format!("Build failed: {err}"))?;
+            let stdout = String::from_utf8_lossy(&output.stdout);
+            let stderr = String::from_utf8_lossy(&output.stderr);
+
+            let mut headers = Vec::new();
+            let mut clean_stdout = String::new();
+            for line in stdout.lines() {
+                if let Some(stripped) = line.strip_prefix("Note: including file:") {
+                    headers.push(stripped.trim().to_string());
+                } else if let Some(stripped) = line.strip_prefix("Примечание: включение файла:")
+                {
+                    headers.push(stripped.trim().to_string());
+                } else {
+                    clean_stdout.push_str(line);
+                    clean_stdout.push('\n');
+                }
+            }
+
+            if !output.status.success() {
+                eprint!("{}", clean_stdout);
+                eprint!("{}", stderr);
+                return Err("Build failed".to_string());
+            } else {
+                let trimmed_out = clean_stdout.trim();
+                let trimmed_err = stderr.trim();
+                let src_filename = Path::new(source)
+                    .file_name()
+                    .and_then(|v| v.to_str())
+                    .unwrap_or("");
+                if !trimmed_out.is_empty() && trimmed_out != src_filename {
+                    print!("{}", clean_stdout);
+                }
+                if !trimmed_err.is_empty() {
+                    eprintln!("{}", trimmed_err);
+                }
+            }
+
+            let d_path = Path::new(&obj_path).with_extension("d");
+            let mut d_content = format!("{}: \\\n", obj_path.replace('\\', "/"));
+            for h in headers {
+                let escaped = h.replace('\\', "/").replace(" ", "\\ ");
+                d_content.push_str(&format!("  {} \\\n", escaped));
+            }
+            std::fs::write(&d_path, d_content).map_err(|err| format!("d file error: {err}"))?;
         }
         objects.push(obj_path);
     }
     Ok(objects)
 }
-
-fn object_path(obj_dir: &Path, source: &str, obj_ext: &str) -> String {
-    let src_path = Path::new(source);
-    let rel = src_path
-        .strip_prefix("./src")
-        .or_else(|_| src_path.strip_prefix("src"))
-        .unwrap_or(src_path);
-    let mut out = obj_dir.join(rel);
-    out.set_extension(obj_ext.trim_start_matches('.'));
-    out.to_string_lossy().to_string()
-}
-
-fn needs_rebuild(source: &str, object: &str) -> bool {
-    let src_time = fs::metadata(source).and_then(|m| m.modified());
-    let obj_time = fs::metadata(object).and_then(|m| m.modified());
-    match (src_time, obj_time) {
-        (Ok(s), Ok(o)) => s > o,
-        (Ok(_), Err(_)) => true,
-        _ => true,
-    }
-}

src/core/builder/nasm.rs

@@ -1,12 +1,14 @@
 use crate::core::builder::BuildContext;
+use crate::core::builder::common;
 use crate::platform;
 use std::fs;
-use std::path::{Path, PathBuf};
+use std::path::Path;
 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() {
@@ -15,7 +17,7 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
         ctx.compiler
     };
     let start_time = Instant::now();
-    let sources = collect_sources(ctx.language, ctx.exclude_dirs)?;
+    let sources = collect_sources(ctx)?;
     let obj_dir = Path::new("./target").join(ctx.profile).join("obj");
     let objects = build_objects(assembler, &sources, &obj_dir, ctx, "o")?;
 
@@ -35,6 +37,9 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
         for obj in &objects {
             cmd.arg(obj);
         }
+        if std::env::var("DCR_DEBUG").is_ok() {
+            eprintln!("[dcr] {:?}", cmd);
+        }
         match cmd.status() {
             Ok(status) if status.success() => {
                 let elapsed = ((start_time.elapsed().as_secs_f64() * 100.0).trunc()) / 100.0;
@@ -72,6 +77,9 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     };
     cmd.arg("-o").arg(out_path);
 
+    if std::env::var("DCR_DEBUG").is_ok() {
+        eprintln!("[dcr] {:?}", cmd);
+    }
     match cmd.status() {
         Ok(status) if status.success() => {
             let elapsed = ((start_time.elapsed().as_secs_f64() * 100.0).trunc()) / 100.0;
@@ -82,76 +90,14 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     }
 }
 
-pub(crate) fn collect_sources(
+pub(crate) fn collect_sources(ctx: &BuildContext) -> Result<Vec<String>, String> {
-    language: &str,
+    // NASM handles lowercase .s and .asm only (not .S which is GCC preprocessed)
-    exclude_dirs: &[PathBuf],
+    common::collect_sources(
-) -> Result<Vec<String>, String> {
+        ctx.source_roots,
-    let lang = language.to_lowercase();
+        &["asm", "s"],
-    let mut sources = Vec::new();
+        ctx.exclude_dirs,
-    collect_sources_rec("./src", &lang, &mut sources, exclude_dirs)?;
+        ctx.include_paths,
-    sources.sort();
+    )
-    if sources.is_empty() {
-        return Err("No source files found in ./src".to_string());
-    }
-    Ok(sources)
-}
-
-fn collect_sources_rec(
-    dir: &str,
-    lang: &str,
-    out: &mut Vec<String>,
-    exclude_dirs: &[PathBuf],
-) -> Result<(), String> {
-    let dir_path = Path::new(dir);
-    let full_dir = if dir_path.is_absolute() {
-        dir_path.to_path_buf()
-    } else {
-        std::env::current_dir()
-            .map_err(|err| format!("src dir error: {err}"))?
-            .join(dir_path)
-    };
-    if is_excluded(&full_dir, exclude_dirs) {
-        return Ok(());
-    }
-    let entries = fs::read_dir(&full_dir).map_err(|err| format!("src dir error: {err}"))?;
-    for entry in entries {
-        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) {
-                continue;
-            }
-            collect_sources_rec(&path.to_string_lossy(), lang, out, exclude_dirs)?;
-            continue;
-        }
-        if !path.is_file() {
-            continue;
-        }
-        let ext_raw = path.extension().and_then(|v| v.to_str()).unwrap_or("");
-        let ext = ext_raw.to_lowercase();
-        let file = normalize_source_path(&path);
-        let allowed = lang == "asm" && (ext == "asm" || (ext == "s" && ext_raw == "s"));
-        if allowed {
-            out.push(file);
-        }
-    }
-    Ok(())
-}
-
-fn is_excluded(path: &Path, exclude_dirs: &[PathBuf]) -> bool {
-    exclude_dirs.iter().any(|dir| path.starts_with(dir))
-}
-
-fn normalize_source_path(path: &Path) -> String {
-    if !path.is_absolute() {
-        return path.to_string_lossy().to_string();
-    }
-    if let Ok(base) = std::env::current_dir()
-        && let Ok(rel) = path.strip_prefix(&base)
-    {
-        return format!("./{}", rel.to_string_lossy());
-    }
-    path.to_string_lossy().to_string()
 }
 
 fn build_objects(
@@ -164,11 +110,11 @@ fn build_objects(
     let mut objects = Vec::new();
     let format = nasm_format(ctx.platform);
     for source in sources {
-        let obj_path = object_path(obj_dir, source, obj_ext);
+        let obj_path = common::object_path(obj_dir, source, obj_ext);
         if let Some(parent) = Path::new(&obj_path).parent() {
             fs::create_dir_all(parent).map_err(|err| format!("obj dir error: {err}"))?;
         }
-        if needs_rebuild(source, &obj_path) {
+        if common::needs_rebuild(source, &obj_path) {
             let mut cmd = Command::new(assembler);
             cmd.arg("-f")
                 .arg(format)
@@ -178,6 +124,9 @@ fn build_objects(
             for flag in ctx.cflags {
                 cmd.arg(flag);
             }
+            if std::env::var("DCR_DEBUG").is_ok() {
+                eprintln!("[dcr] {:?}", cmd);
+            }
             match cmd.status() {
                 Ok(status) if status.success() => {}
                 Ok(_) => return Err("Build failed".to_string()),
@@ -224,24 +173,3 @@ fn nasm_format(platform: Option<&str>) -> &'static str {
         "elf64"
     }
 }
-
-fn object_path(obj_dir: &Path, source: &str, obj_ext: &str) -> String {
-    let src_path = Path::new(source);
-    let rel = src_path
-        .strip_prefix("./src")
-        .or_else(|_| src_path.strip_prefix("src"))
-        .unwrap_or(src_path);
-    let mut out = obj_dir.join(rel);
-    out.set_extension(obj_ext.trim_start_matches('.'));
-    out.to_string_lossy().to_string()
-}
-
-fn needs_rebuild(source: &str, object: &str) -> bool {
-    let src_time = fs::metadata(source).and_then(|m| m.modified());
-    let obj_time = fs::metadata(object).and_then(|m| m.modified());
-    match (src_time, obj_time) {
-        (Ok(s), Ok(o)) => s > o,
-        (Ok(_), Err(_)) => true,
-        _ => true,
-    }
-}

src/core/builder/unix_cc.rs

@@ -1,7 +1,8 @@
 use crate::core::builder::BuildContext;
+use crate::core::builder::common;
 use crate::platform;
 use std::fs;
-use std::path::{Path, PathBuf};
+use std::path::Path;
 use std::process::Command;
 use std::time::Instant;
 
@@ -12,7 +13,13 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
         ctx.compiler
     };
     let start_time = Instant::now();
-    let sources = collect_sources(ctx.language, ctx.exclude_dirs)?;
+    let extensions = source_extensions(ctx.language);
+    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")?;
 
@@ -23,6 +30,9 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
         for obj in &objects {
             cmd.arg(obj);
         }
+        if std::env::var("DCR_DEBUG").is_ok() {
+            eprintln!("[dcr] {:?}", cmd);
+        }
         match cmd.status() {
             Ok(status) if status.success() => {
                 let elapsed = ((start_time.elapsed().as_secs_f64() * 100.0).trunc()) / 100.0;
@@ -44,12 +54,6 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     for obj in &objects {
         cmd.arg(obj);
     }
-    for flag in default_flags(ctx.profile) {
-        cmd.arg(flag);
-    }
-    for flag in ctx.cflags {
-        cmd.arg(flag);
-    }
     for dir in ctx.lib_dirs {
         cmd.arg(format!("-L{dir}"));
     }
@@ -66,6 +70,9 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     };
     cmd.arg("-o").arg(out_path);
 
+    if std::env::var("DCR_DEBUG").is_ok() {
+        eprintln!("[dcr] {:?}", cmd);
+    }
     match cmd.status() {
         Ok(status) if status.success() => {
             let elapsed = ((start_time.elapsed().as_secs_f64() * 100.0).trunc()) / 100.0;
@@ -76,82 +83,31 @@ pub fn build(ctx: &BuildContext) -> Result<f64, String> {
     }
 }
 
-pub(crate) fn collect_sources(
+pub(crate) fn collect_sources(ctx: &BuildContext) -> Result<Vec<String>, String> {
-    language: &str,
+    let extensions = source_extensions(ctx.language);
-    exclude_dirs: &[PathBuf],
+    common::collect_sources(
-) -> Result<Vec<String>, String> {
+        ctx.source_roots,
-    let lang = language.to_lowercase();
+        &extensions,
-    let mut sources = Vec::new();
+        ctx.exclude_dirs,
-    collect_sources_rec("./src", &lang, &mut sources, exclude_dirs)?;
+        ctx.include_paths,
-    sources.sort();
+    )
-    if sources.is_empty() {
-        return Err("No source files found in ./src".to_string());
-    }
-    Ok(sources)
 }
 
-fn collect_sources_rec(
+fn source_extensions(language: &str) -> Vec<&str> {
-    dir: &str,
+    let mut out = Vec::new();
-    lang: &str,
+    for part in language.split('+') {
-    out: &mut Vec<String>,
+        let lang = part.trim().to_lowercase();
-    exclude_dirs: &[PathBuf],
+        match lang.as_str() {
-) -> Result<(), String> {
+            "c" => out.extend(["c"]),
-    let dir_path = Path::new(dir);
+            "c++" | "cpp" | "cxx" => out.extend(["cpp", "cxx", "cc"]),
-    let full_dir = if dir_path.is_absolute() {
+            "asm" => out.extend(["s", "S", "asm"]),
-        dir_path.to_path_buf()
+            _ => {}
-    } else {
-        std::env::current_dir()
-            .map_err(|err| format!("src dir error: {err}"))?
-            .join(dir_path)
-    };
-    if is_excluded(&full_dir, exclude_dirs) {
-        return Ok(());
-    }
-    let entries = fs::read_dir(&full_dir).map_err(|err| format!("src dir error: {err}"))?;
-    for entry in entries {
-        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) {
-                continue;
-            }
-            collect_sources_rec(&path.to_string_lossy(), lang, out, exclude_dirs)?;
-            continue;
-        }
-        if !path.is_file() {
-            continue;
-        }
-        let ext = path
-            .extension()
-            .and_then(|v| v.to_str())
-            .unwrap_or("")
-            .to_lowercase();
-        let file = normalize_source_path(&path);
-        let allowed = (lang == "c" && ext == "c")
-            || ((lang == "c++" || lang == "cpp" || lang == "cxx")
-                && (ext == "cpp" || ext == "cxx" || ext == "cc"))
-            || (lang == "asm" && (ext == "s" || ext == "asm"));
-        if allowed {
-            out.push(file);
         }
     }
-    Ok(())
+    if out.is_empty() {
-}
+        out.extend(["c"]);
-
-fn is_excluded(path: &Path, exclude_dirs: &[PathBuf]) -> bool {
-    exclude_dirs.iter().any(|dir| path.starts_with(dir))
-}
-
-fn normalize_source_path(path: &Path) -> String {
-    if !path.is_absolute() {
-        return path.to_string_lossy().to_string();
     }
-    if let Ok(base) = std::env::current_dir()
+    out
-        && let Ok(rel) = path.strip_prefix(&base)
-    {
-        return format!("./{}", rel.to_string_lossy());
-    }
-    path.to_string_lossy().to_string()
 }
 
 fn default_flags(profile: &str) -> &'static [&'static str] {
@@ -163,7 +119,7 @@ fn default_flags(profile: &str) -> &'static [&'static str] {
             "-Wall",
             "-Wextra",
             "-fno-omit-frame-pointer",
-            "-DDEBUG",
+            "-DDCR_DEBUG",
         ],
         _ => &[],
     }
@@ -178,11 +134,11 @@ fn build_objects(
 ) -> Result<Vec<String>, String> {
     let mut objects = Vec::new();
     for source in sources {
-        let obj_path = object_path(obj_dir, source, obj_ext);
+        let obj_path = common::object_path(obj_dir, source, obj_ext);
         if let Some(parent) = Path::new(&obj_path).parent() {
             fs::create_dir_all(parent).map_err(|err| format!("obj dir error: {err}"))?;
         }
-        if needs_rebuild(source, &obj_path) {
+        if common::needs_rebuild(source, &obj_path) {
             let mut cmd = Command::new(compiler);
             cmd.arg("-c").arg(source).arg("-o").arg(&obj_path);
             if ctx.kind == "sharedlib" {
@@ -200,6 +156,9 @@ fn build_objects(
                 cmd.arg(format!("-std={}", ctx.standard));
             }
             for flag in default_flags(ctx.profile) {
+                if ctx.platform.is_some() && *flag == "-march=native" {
+                    continue;
+                }
                 cmd.arg(flag);
             }
             for flag in ctx.cflags {
@@ -208,6 +167,11 @@ fn build_objects(
             for dir in ctx.include_dirs {
                 cmd.arg(format!("-I{dir}"));
             }
+            let d_path = Path::new(&obj_path).with_extension("d");
+            cmd.arg("-MMD").arg("-MF").arg(&d_path);
+            if std::env::var("DCR_DEBUG").is_ok() {
+                eprintln!("[dcr] {:?}", cmd);
+            }
             match cmd.status() {
                 Ok(status) if status.success() => {}
                 Ok(_) => return Err("Build failed".to_string()),
@@ -227,24 +191,3 @@ fn asm_lang_flag(source: &str) -> Option<&'static str> {
         _ => None,
     }
 }
-
-fn object_path(obj_dir: &Path, source: &str, obj_ext: &str) -> String {
-    let src_path = Path::new(source);
-    let rel = src_path
-        .strip_prefix("./src")
-        .or_else(|_| src_path.strip_prefix("src"))
-        .unwrap_or(src_path);
-    let mut out = obj_dir.join(rel);
-    out.set_extension(obj_ext.trim_start_matches('.'));
-    out.to_string_lossy().to_string()
-}
-
-fn needs_rebuild(source: &str, object: &str) -> bool {
-    let src_time = fs::metadata(source).and_then(|m| m.modified());
-    let obj_time = fs::metadata(object).and_then(|m| m.modified());
-    match (src_time, obj_time) {
-        (Ok(s), Ok(o)) => s > o,
-        (Ok(_), Err(_)) => true,
-        _ => true,
-    }
-}

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 +233,115 @@ 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",
+        ] {
+            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 +445,12 @@ 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 +460,11 @@ fn format_toml(value: &Value) -> Result<String, ConfigError> {
     out.push_str(&format!("version = \"{version}\"\n\n"));
 
     out.push_str("[build]\n");
-    out.push_str(&format!("language = \"{language}\"\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
@@ -393,3 +583,220 @@ fn set_path(value: &mut Value, path: &[&str], new_value: Value) -> Result<(), Co
         Err(ConfigError::Invalid("empty key".into()))
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::sync::atomic::{AtomicUsize, Ordering};
+
+    static TEST_COUNTER: AtomicUsize = AtomicUsize::new(0);
+
+    fn temp_dir(prefix: &str) -> PathBuf {
+        let n = TEST_COUNTER.fetch_add(1, Ordering::SeqCst);
+        let dir = std::env::temp_dir().join(format!("dcr_cfg_test_{prefix}_{n}"));
+        let _ = fs::remove_dir_all(&dir);
+        fs::create_dir_all(&dir).unwrap();
+        dir
+    }
+
+    fn write_toml_file(dir: &Path, content: &str) -> PathBuf {
+        let path = dir.join("dcr.toml");
+        fs::write(&path, content).unwrap();
+        path
+    }
+
+    fn minimal_valid_toml() -> &'static str {
+        "[package]\nname = \"test\"\nversion = \"0.1.0\"\n\n[build]\nlanguage = \"c\"\nstandard = \"c11\"\ncompiler = \"clang\"\nkind = \"bin\"\n\n[dependencies]\n"
+    }
+
+    #[test]
+    fn open_valid_toml() {
+        let dir = temp_dir("open_valid");
+        let path = write_toml_file(&dir, minimal_valid_toml());
+        let config = Config::open(&path.to_string_lossy());
+        assert!(config.is_ok(), "should open valid toml");
+    }
+
+    #[test]
+    fn open_invalid_toml_syntax() {
+        let dir = temp_dir("open_invalid");
+        let path = write_toml_file(&dir, "this is not [valid toml !!!");
+        let config = Config::open(&path.to_string_lossy());
+        assert!(config.is_err(), "should fail on invalid TOML syntax");
+    }
+
+    #[test]
+    fn open_nonexistent_fails() {
+        let result = Config::open("/tmp/dcr_nonexistent_file_12345.toml");
+        assert!(result.is_err(), "should fail on nonexistent file");
+    }
+
+    #[test]
+    fn validate_missing_package_fails() {
+        let dir = temp_dir("no_package");
+        let path = write_toml_file(
+            &dir,
+            "[build]\nlanguage = \"c\"\nstandard = \"c11\"\ncompiler = \"clang\"\n\n[dependencies]\n",
+        );
+        let result = Config::open(&path.to_string_lossy());
+        assert!(result.is_err(), "missing [package] should fail validation");
+    }
+
+    #[test]
+    fn validate_missing_build_fails() {
+        let dir = temp_dir("no_build");
+        let path = write_toml_file(
+            &dir,
+            "[package]\nname = \"test\"\nversion = \"0.1.0\"\n\n[dependencies]\n",
+        );
+        let result = Config::open(&path.to_string_lossy());
+        assert!(result.is_err(), "missing [build] should fail validation");
+    }
+
+    #[test]
+    fn validate_empty_language_fails() {
+        let dir = temp_dir("empty_lang");
+        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 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");
+        let path = write_toml_file(
+            &dir,
+            "[package]\nname = \"test\"\nversion = \"0.1.0\"\n\n[build]\nlanguage = \"c\"\nstandard = \"c11\"\ncompiler = \"clang\"\nkind = \"exe\"\n\n[dependencies]\n",
+        );
+        let result = Config::open(&path.to_string_lossy());
+        assert!(result.is_err(), "unknown kind 'exe' should fail validation");
+    }
+
+    #[test]
+    fn validate_valid_kinds() {
+        for kind in ["bin", "staticlib", "sharedlib"] {
+            let dir = temp_dir(&format!("kind_{kind}"));
+            let content = format!(
+                "[package]\nname = \"test\"\nversion = \"0.1.0\"\n\n[build]\nlanguage = \"c\"\nstandard = \"c11\"\ncompiler = \"clang\"\nkind = \"{kind}\"\n\n[dependencies]\n"
+            );
+            let path = write_toml_file(&dir, &content);
+            let result = Config::open(&path.to_string_lossy());
+            assert!(result.is_ok(), "kind '{kind}' should be valid");
+        }
+    }
+
+    #[test]
+    fn get_values() {
+        let dir = temp_dir("get_values");
+        let path = write_toml_file(&dir, minimal_valid_toml());
+        let config = Config::open(&path.to_string_lossy()).unwrap();
+
+        assert_eq!(
+            config.get("package.name").and_then(|v| v.as_str()),
+            Some("test")
+        );
+        assert_eq!(
+            config.get("build.language").and_then(|v| v.as_str()),
+            Some("c")
+        );
+        assert_eq!(
+            config.get("build.kind").and_then(|v| v.as_str()),
+            Some("bin")
+        );
+        assert!(config.get("nonexistent.key").is_none());
+    }
+
+    #[test]
+    fn set_and_read_back() {
+        let dir = temp_dir("set_value");
+        let path = write_toml_file(&dir, minimal_valid_toml());
+        let mut config = Config::open(&path.to_string_lossy()).unwrap();
+
+        config
+            .set("package.name", Value::String("newname".to_string()))
+            .unwrap();
+        assert_eq!(
+            config.get("package.name").and_then(|v| v.as_str()),
+            Some("newname")
+        );
+
+        // Verify persisted to disk
+        let config2 = Config::open(&path.to_string_lossy()).unwrap();
+        assert_eq!(
+            config2.get("package.name").and_then(|v| v.as_str()),
+            Some("newname")
+        );
+    }
+
+    #[test]
+    fn new_creates_default_config() {
+        let dir = temp_dir("new_default");
+        let path = dir.join("dcr.toml");
+        let config = Config::new(&path.to_string_lossy()).unwrap();
+
+        assert!(path.exists(), "dcr.toml should be created");
+        assert_eq!(
+            config.get("build.language").and_then(|v| v.as_str()),
+            Some("c")
+        );
+        assert_eq!(
+            config.get("build.standard").and_then(|v| v.as_str()),
+            Some("c11")
+        );
+        assert_eq!(
+            config.get("build.compiler").and_then(|v| v.as_str()),
+            Some("clang")
+        );
+        assert_eq!(
+            config.get("build.kind").and_then(|v| v.as_str()),
+            Some("bin")
+        );
+    }
+
+    #[test]
+    fn validate_workspace_empty_path_fails() {
+        let dir = temp_dir("ws_empty_path");
+        let path = write_toml_file(
+            &dir,
+            "[package]\nname = \"test\"\nversion = \"0.1.0\"\n\n[build]\nlanguage = \"c\"\nstandard = \"c11\"\ncompiler = \"clang\"\n\n[workspace]\n[workspace.member1]\npath = \"\"\n\n[dependencies]\n",
+        );
+        let result = Config::open(&path.to_string_lossy());
+        assert!(
+            result.is_err(),
+            "workspace member with empty path should fail"
+        );
+    }
+
+    #[test]
+    fn check_returns_bool() {
+        let dir = temp_dir("check_bool");
+        let path = write_toml_file(&dir, minimal_valid_toml());
+        let config = Config::open(&path.to_string_lossy()).unwrap();
+        assert!(config.check(), "valid config should return true");
+    }
+}

src/core/deps.rs

@@ -50,7 +50,8 @@ pub fn resolve_deps(
     let mut lock_packages = Vec::new();
 
     for dep in deps {
-        let dep_path = resolve_path(project_root, &dep.path_raw)?;
+        let dep_path_raw = expand_profile(&dep.path_raw, profile);
+        let dep_path = resolve_path(project_root, &dep_path_raw)?;
         if !dep_path.is_dir() {
             return Err(format!(
                 "Dependency '{}' path is not a directory: {}",
@@ -59,8 +60,13 @@ pub fn resolve_deps(
             ));
         }
 
-        let include = resolve_paths(&dep_path, dep.include_raw.as_deref(), &["include"])?;
+        let include = resolve_paths(&dep_path, dep.include_raw.as_deref(), &["include"], profile)?;
-        let lib = resolve_paths(&dep_path, dep.lib_raw.as_deref(), &["lib", "lib64"])?;
+        let lib = resolve_paths(
+            &dep_path,
+            dep.lib_raw.as_deref(),
+            &["lib", "lib64"],
+            profile,
+        )?;
         let libs_list = dep
             .libs_raw
             .clone()
@@ -200,11 +206,13 @@ fn resolve_paths(
     base: &Path,
     raw: Option<&[String]>,
     defaults: &[&str],
+    profile: &str,
 ) -> Result<Vec<PathBuf>, String> {
     let mut out = Vec::new();
     if let Some(raw) = raw {
         for r in raw {
-            let p = Path::new(r);
+            let expanded = expand_profile(r, profile);
+            let p = Path::new(&expanded);
             let full = if p.is_absolute() {
                 p.to_path_buf()
             } else {
@@ -227,6 +235,10 @@ fn resolve_paths(
     Ok(out)
 }
 
+fn expand_profile(raw: &str, profile: &str) -> String {
+    raw.replace("{profile}", profile)
+}
+
 fn sync_dep_dir(src: &Path, dst: &Path) -> std::io::Result<()> {
     if dst.exists() {
         fs::remove_dir_all(dst)?;

src/main.rs

@@ -21,6 +21,7 @@ fn main() {
         "build" => cli::build::build(rest),
         "run" => cli::run::run(rest),
         "clean" => cli::clean::clean(rest),
+        "gen" => cli::r#gen::r#gen(rest),
         "--version" => {
             println!("dcr {} ({})", env!("CARGO_PKG_VERSION"), env!("DCR_TARGET"));
             0

src/platform/linux.rs

@@ -18,3 +18,57 @@ pub fn shared_lib_path(profile: &str, name: &str, target_dir: Option<&str>) -> S
         None => format!("./target/{profile}/lib{name}.so"),
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn bin_path_default() {
+        assert_eq!(bin_path("debug", "hello", None), "./target/debug/hello");
+    }
+
+    #[test]
+    fn bin_path_release() {
+        assert_eq!(bin_path("release", "hello", None), "./target/release/hello");
+    }
+
+    #[test]
+    fn bin_path_custom_target() {
+        assert_eq!(bin_path("debug", "hello", Some("out")), "out/hello");
+    }
+
+    #[test]
+    fn bin_path_custom_target_trailing_slash() {
+        assert_eq!(bin_path("debug", "hello", Some("out/")), "out/hello");
+    }
+
+    #[test]
+    fn lib_path_default() {
+        assert_eq!(
+            lib_path("debug", "mylib", None),
+            "./target/debug/libmylib.a"
+        );
+    }
+
+    #[test]
+    fn lib_path_custom_target() {
+        assert_eq!(lib_path("debug", "mylib", Some("out")), "out/libmylib.a");
+    }
+
+    #[test]
+    fn shared_lib_path_default() {
+        assert_eq!(
+            shared_lib_path("debug", "mylib", None),
+            "./target/debug/libmylib.so"
+        );
+    }
+
+    #[test]
+    fn shared_lib_path_custom_target() {
+        assert_eq!(
+            shared_lib_path("release", "mylib", Some("dist")),
+            "dist/libmylib.so"
+        );
+    }
+}

tests/cli_errors.rs

@@ -0,0 +1,297 @@
+use std::path::{Path, PathBuf};
+use std::process::Command;
+use std::sync::Once;
+use std::sync::atomic::{AtomicUsize, Ordering};
+use std::time::{SystemTime, UNIX_EPOCH};
+
+static COUNTER: AtomicUsize = AtomicUsize::new(0);
+static BUILD_ONCE: Once = Once::new();
+
+fn bin_path() -> PathBuf {
+    if let Ok(exe) = std::env::var("CARGO_BIN_EXE_dcr") {
+        return PathBuf::from(exe);
+    }
+    ensure_bin_built();
+    let mut path = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+    path.push("target");
+    path.push("debug");
+    path.push(format!("dcr{}", std::env::consts::EXE_SUFFIX));
+    path
+}
+
+fn unique_sandbox_dir(prefix: &str) -> PathBuf {
+    let pid = std::process::id();
+    let n = COUNTER.fetch_add(1, Ordering::SeqCst);
+    let now = SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .unwrap_or_default()
+        .as_nanos();
+    let mut path = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+    path.push("sandbox");
+    path.push("cli-tests");
+    path.push(format!("dcr_{prefix}_{pid}_{n}_{now}"));
+    std::fs::create_dir_all(&path).expect("failed to create temp dir");
+    path
+}
+
+fn run_dcr(args: &[&str], cwd: &Path) -> std::process::Output {
+    let mut cmd = Command::new(bin_path());
+    cmd.args(args).current_dir(cwd);
+    cmd.output().expect("failed to run dcr")
+}
+
+fn run_dcr_env(args: &[&str], cwd: &Path, envs: &[(&str, &str)]) -> std::process::Output {
+    let mut cmd = Command::new(bin_path());
+    cmd.args(args).current_dir(cwd);
+    for (k, v) in envs {
+        cmd.env(k, v);
+    }
+    cmd.output().expect("failed to run dcr")
+}
+
+fn ensure_bin_built() {
+    BUILD_ONCE.call_once(|| {
+        let status = Command::new("cargo")
+            .arg("build")
+            .current_dir(env!("CARGO_MANIFEST_DIR"))
+            .status()
+            .expect("failed to run cargo build");
+        assert!(status.success(), "cargo build failed");
+    });
+}
+
+fn available_compiler() -> Option<&'static str> {
+    for candidate in ["clang", "gcc", "cc"] {
+        let ok = Command::new(candidate)
+            .arg("--version")
+            .output()
+            .map(|o| o.status.success())
+            .unwrap_or(false);
+        if ok {
+            return Some(candidate);
+        }
+    }
+    None
+}
+
+// --- Tests ---
+
+#[test]
+fn no_args_shows_help() {
+    let dir = unique_sandbox_dir("noargs");
+    let out = run_dcr(&[], &dir);
+    // Should succeed (help returns 0) and produce some output
+    let stdout = String::from_utf8_lossy(&out.stdout);
+    assert!(
+        stdout.contains("DCR") || stdout.contains("dcr") || stdout.contains("USAGE"),
+        "no args should show help text"
+    );
+}
+
+#[test]
+fn unknown_command_fails() {
+    let dir = unique_sandbox_dir("unknown_cmd");
+    let out = run_dcr(&["foobar"], &dir);
+    let stdout = String::from_utf8_lossy(&out.stdout);
+    assert!(
+        stdout.contains("error") || stdout.contains("Unknown"),
+        "unknown command should print error"
+    );
+}
+
+#[test]
+fn build_without_toml_fails() {
+    let dir = unique_sandbox_dir("build_no_toml");
+    let out = run_dcr(&["build"], &dir);
+    assert!(!out.status.success(), "build without dcr.toml should fail");
+    let stdout = String::from_utf8_lossy(&out.stdout);
+    assert!(
+        stdout.contains("dcr.toml") || stdout.contains("not found"),
+        "should mention missing dcr.toml"
+    );
+}
+
+#[test]
+fn run_without_toml_fails() {
+    let dir = unique_sandbox_dir("run_no_toml");
+    let out = run_dcr(&["run"], &dir);
+    assert!(!out.status.success(), "run without dcr.toml should fail");
+}
+
+#[test]
+fn clean_without_toml_fails() {
+    let dir = unique_sandbox_dir("clean_no_toml");
+    let out = run_dcr(&["clean"], &dir);
+    assert!(!out.status.success(), "clean without dcr.toml should fail");
+}
+
+#[test]
+fn new_existing_dir_fails() {
+    let dir = unique_sandbox_dir("new_exist");
+    // Create the project directory first
+    std::fs::create_dir_all(dir.join("hello")).expect("failed to create dir");
+    let out = run_dcr(&["new", "hello"], &dir);
+    assert!(!out.status.success(), "dcr new on existing dir should fail");
+    let stdout = String::from_utf8_lossy(&out.stdout);
+    assert!(
+        stdout.contains("already exists") || stdout.contains("error"),
+        "should report dir already exists"
+    );
+}
+
+#[test]
+fn init_nonempty_dir_fails() {
+    let dir = unique_sandbox_dir("init_nonempty");
+    // Put a file in the dir so it's not empty
+    std::fs::write(dir.join("dummy.txt"), "x").expect("failed to write");
+    let out = run_dcr(&["init"], &dir);
+    assert!(
+        !out.status.success(),
+        "dcr init in non-empty dir should fail"
+    );
+    let stdout = String::from_utf8_lossy(&out.stdout);
+    assert!(
+        stdout.contains("not empty") || stdout.contains("error"),
+        "should report dir not empty"
+    );
+}
+
+#[test]
+fn build_unknown_flag_fails() {
+    let dir = unique_sandbox_dir("build_badflag");
+    // Init a valid project first
+    let out = run_dcr(&["init"], &dir);
+    assert!(out.status.success(), "init should succeed");
+    let out = run_dcr(&["build", "--foobar"], &dir);
+    assert!(!out.status.success(), "build with unknown flag should fail");
+}
+
+#[test]
+fn run_library_project_fails() {
+    let Some(compiler) = available_compiler() else {
+        eprintln!("no compiler found; skipping run_library test");
+        return;
+    };
+
+    let dir = unique_sandbox_dir("run_lib");
+    let out = run_dcr(&["init"], &dir);
+    assert!(out.status.success(), "init should succeed");
+
+    // Edit dcr.toml to set kind = "staticlib"
+    let toml_path = dir.join("dcr.toml");
+    let toml = std::fs::read_to_string(&toml_path).expect("failed to read dcr.toml");
+    let updated = toml.replace("kind = \"bin\"", "kind = \"staticlib\"");
+    std::fs::write(&toml_path, updated).expect("failed to write dcr.toml");
+
+    let envs = [("DCR_COMPILER", compiler)];
+    let out = run_dcr_env(&["run"], &dir, &envs);
+    assert!(!out.status.success(), "dcr run on staticlib should fail");
+    let stdout = String::from_utf8_lossy(&out.stdout);
+    assert!(
+        stdout.contains("library") || stdout.contains("Cannot run"),
+        "should report cannot run library"
+    );
+}
+
+#[test]
+fn clean_specific_profile() {
+    let dir = unique_sandbox_dir("clean_profile");
+    let out = run_dcr(&["init"], &dir);
+    assert!(out.status.success(), "init should succeed");
+
+    // Create target/debug and target/release dirs
+    std::fs::create_dir_all(dir.join("target").join("debug")).expect("create debug");
+    std::fs::write(dir.join("target").join("debug").join("dummy.o"), "x").expect("write");
+    std::fs::create_dir_all(dir.join("target").join("release")).expect("create release");
+    std::fs::write(dir.join("target").join("release").join("dummy.o"), "x").expect("write");
+
+    // Clean only release
+    let out = run_dcr(&["clean", "--release"], &dir);
+    assert!(out.status.success(), "clean --release should succeed");
+    assert!(
+        !dir.join("target").join("release").exists(),
+        "target/release should be removed"
+    );
+    assert!(
+        dir.join("target").join("debug").is_dir(),
+        "target/debug should remain"
+    );
+}
+
+#[test]
+fn new_no_name_fails() {
+    let dir = unique_sandbox_dir("new_noname");
+    let out = run_dcr(&["new"], &dir);
+    assert!(!out.status.success(), "dcr new without name should fail");
+    let stdout = String::from_utf8_lossy(&out.stdout);
+    assert!(
+        stdout.contains("not specified") || stdout.contains("error"),
+        "should report name not specified"
+    );
+}
+
+#[test]
+fn staticlib_build() {
+    let Some(compiler) = available_compiler() else {
+        eprintln!("no compiler found; skipping staticlib test");
+        return;
+    };
+    let dir = unique_sandbox_dir("staticlib");
+    let out = run_dcr(&["init"], &dir);
+    assert!(out.status.success(), "init should succeed");
+
+    let toml_path = dir.join("dcr.toml");
+    let toml = std::fs::read_to_string(&toml_path).expect("read dcr.toml");
+    let updated = toml.replace("kind = \"bin\"", "kind = \"staticlib\"");
+    std::fs::write(&toml_path, updated).expect("write dcr.toml");
+
+    let envs = [("DCR_COMPILER", compiler)];
+    let out = run_dcr_env(&["build"], &dir, &envs);
+    assert!(out.status.success(), "staticlib build should succeed");
+    // Check that a .a file exists
+    let lib_path = dir.join("target").join("debug");
+    let has_lib = std::fs::read_dir(&lib_path)
+        .map(|entries| {
+            entries
+                .filter_map(|e| e.ok())
+                .any(|e| e.file_name().to_string_lossy().ends_with(".a"))
+        })
+        .unwrap_or(false);
+    assert!(has_lib, "staticlib should produce a .a file");
+}
+
+#[test]
+fn build_release_profile() {
+    let Some(compiler) = available_compiler() else {
+        eprintln!("no compiler found; skipping release build test");
+        return;
+    };
+    let dir = unique_sandbox_dir("release_build");
+    let out = run_dcr(&["init"], &dir);
+    assert!(out.status.success(), "init should succeed");
+
+    let envs = [("DCR_COMPILER", compiler)];
+    let out = run_dcr_env(&["build", "--release"], &dir, &envs);
+    assert!(out.status.success(), "release build should succeed");
+    assert!(
+        dir.join("target").join("release").is_dir(),
+        "target/release should exist"
+    );
+}
+
+#[test]
+fn version_contains_version_string() {
+    let dir = unique_sandbox_dir("version");
+    let out = run_dcr(&["--version"], &dir);
+    assert!(out.status.success());
+    let stdout = String::from_utf8_lossy(&out.stdout);
+    // Should contain version like "dcr 0.2.8 (target)"
+    assert!(
+        stdout.contains("dcr "),
+        "version output should start with 'dcr '"
+    );
+    assert!(
+        stdout.contains('.'),
+        "version output should contain a version number"
+    );
+}