| <!--- AUTOGENERATED BY `./recipes.py test train` --> | 
 | # Repo documentation for [gn]() | 
 | ## Table of Contents | 
 |  | 
 | **[Recipe Modules](#Recipe-Modules)** | 
 |   * [macos_sdk](#recipe_modules-macos_sdk) — The `macos_sdk` module provides safe functions to access a semi-hermetic XCode installation. | 
 |   * [target](#recipe_modules-target) | 
 |   * [windows_sdk](#recipe_modules-windows_sdk) | 
 |  | 
 | **[Recipes](#Recipes)** | 
 |   * [gn](#recipes-gn) — Recipe for building GN. | 
 |   * [macos_sdk:examples/full](#recipes-macos_sdk_examples_full) | 
 |   * [target:examples/full](#recipes-target_examples_full) | 
 |   * [windows_sdk:examples/full](#recipes-windows_sdk_examples_full) | 
 | ## Recipe Modules | 
 |  | 
 | ### *recipe_modules* / [macos\_sdk](/infra/recipe_modules/macos_sdk) | 
 |  | 
 | [DEPS](/infra/recipe_modules/macos_sdk/__init__.py#5): [recipe\_engine/cipd][recipe_engine/recipe_modules/cipd], [recipe\_engine/context][recipe_engine/recipe_modules/context], [recipe\_engine/json][recipe_engine/recipe_modules/json], [recipe\_engine/path][recipe_engine/recipe_modules/path], [recipe\_engine/platform][recipe_engine/recipe_modules/platform], [recipe\_engine/step][recipe_engine/recipe_modules/step] | 
 |  | 
 |  | 
 | The `macos_sdk` module provides safe functions to access a semi-hermetic | 
 | XCode installation. | 
 |  | 
 | Available only to Google-run bots. | 
 |  | 
 | #### **class [MacOSSDKApi](/infra/recipe_modules/macos_sdk/api.py#14)([RecipeApi][recipe_engine/wkt/RecipeApi]):** | 
 |  | 
 | API for using OS X SDK distributed via CIPD. | 
 |  | 
 |   **@contextmanager**<br>— **def [\_\_call\_\_](/infra/recipe_modules/macos_sdk/api.py#30)(self):** | 
 |  | 
 | Sets up the XCode SDK environment. | 
 |  | 
 | This call is a no-op on non-Mac platforms. | 
 |  | 
 | This will deploy the helper tool and the XCode.app bundle at | 
 | `[START_DIR]/cache/macos_sdk`. | 
 |  | 
 | To avoid machines rebuilding these on every run, set up a named cache in | 
 | your cr-buildbucket.cfg file like: | 
 |  | 
 |     caches: { | 
 |       # Cache for mac_toolchain tool and XCode.app | 
 |       name: "macos_sdk" | 
 |       path: "macos_sdk" | 
 |     } | 
 |  | 
 | If you have builders which e.g. use a non-current SDK, you can give them | 
 | a uniqely named cache: | 
 |  | 
 |     caches: { | 
 |       # Cache for N-1 version mac_toolchain tool and XCode.app | 
 |       name: "macos_sdk_old" | 
 |       path: "macos_sdk" | 
 |     } | 
 |  | 
 | Usage: | 
 |   with api.macos_sdk(): | 
 |     # sdk with mac build bits | 
 |  | 
 | Raises: | 
 |     StepFailure or InfraFailure. | 
 |  | 
 |   **@property**<br>— **def [sdk\_dir](/infra/recipe_modules/macos_sdk/api.py#25)(self):** | 
 | ### *recipe_modules* / [target](/infra/recipe_modules/target) | 
 |  | 
 | [DEPS](/infra/recipe_modules/target/__init__.py#5): [recipe\_engine/platform][recipe_engine/recipe_modules/platform] | 
 |  | 
 |  | 
 | #### **class [TargetApi](/infra/recipe_modules/target/api.py#83)([RecipeApi][recipe_engine/wkt/RecipeApi]):** | 
 |  | 
 |   **@property**<br>— **def [host](/infra/recipe_modules/target/api.py#88)(self):** | 
 | ### *recipe_modules* / [windows\_sdk](/infra/recipe_modules/windows_sdk) | 
 |  | 
 | [DEPS](/infra/recipe_modules/windows_sdk/__init__.py#5): [recipe\_engine/cipd][recipe_engine/recipe_modules/cipd], [recipe\_engine/context][recipe_engine/recipe_modules/context], [recipe\_engine/json][recipe_engine/recipe_modules/json], [recipe\_engine/path][recipe_engine/recipe_modules/path], [recipe\_engine/platform][recipe_engine/recipe_modules/platform], [recipe\_engine/step][recipe_engine/recipe_modules/step] | 
 |  | 
 |  | 
 | #### **class [WindowsSDKApi](/infra/recipe_modules/windows_sdk/api.py#10)([RecipeApi][recipe_engine/wkt/RecipeApi]):** | 
 |  | 
 | API for using Windows SDK distributed via CIPD. | 
 |  | 
 |   **@contextmanager**<br>— **def [\_\_call\_\_](/infra/recipe_modules/windows_sdk/api.py#19)(self):** | 
 |  | 
 | Setups the Windows SDK environment. | 
 |  | 
 | This call is a no-op on non-Windows platforms. | 
 |  | 
 | Raises: | 
 |     StepFailure or InfraFailure. | 
 | ## Recipes | 
 |  | 
 | ### *recipes* / [gn](/infra/recipes/gn.py) | 
 |  | 
 | [DEPS](/infra/recipes/gn.py#8): [macos\_sdk](#recipe_modules-macos_sdk), [target](#recipe_modules-target), [windows\_sdk](#recipe_modules-windows_sdk), [recipe\_engine/buildbucket][recipe_engine/recipe_modules/buildbucket], [recipe\_engine/cas][recipe_engine/recipe_modules/cas], [recipe\_engine/cipd][recipe_engine/recipe_modules/cipd], [recipe\_engine/context][recipe_engine/recipe_modules/context], [recipe\_engine/file][recipe_engine/recipe_modules/file], [recipe\_engine/json][recipe_engine/recipe_modules/json], [recipe\_engine/path][recipe_engine/recipe_modules/path], [recipe\_engine/platform][recipe_engine/recipe_modules/platform], [recipe\_engine/properties][recipe_engine/recipe_modules/properties], [recipe\_engine/raw\_io][recipe_engine/recipe_modules/raw_io], [recipe\_engine/step][recipe_engine/recipe_modules/step] | 
 |  | 
 |  | 
 | Recipe for building GN. | 
 |  | 
 | — **def [RunSteps](/infra/recipes/gn.py#98)(api, repository):** | 
 | ### *recipes* / [macos\_sdk:examples/full](/infra/recipe_modules/macos_sdk/examples/full.py) | 
 |  | 
 | [DEPS](/infra/recipe_modules/macos_sdk/examples/full.py#5): [macos\_sdk](#recipe_modules-macos_sdk), [recipe\_engine/platform][recipe_engine/recipe_modules/platform], [recipe\_engine/properties][recipe_engine/recipe_modules/properties], [recipe\_engine/step][recipe_engine/recipe_modules/step] | 
 |  | 
 |  | 
 | — **def [RunSteps](/infra/recipe_modules/macos_sdk/examples/full.py#13)(api):** | 
 | ### *recipes* / [target:examples/full](/infra/recipe_modules/target/examples/full.py) | 
 |  | 
 | [DEPS](/infra/recipe_modules/target/examples/full.py#5): [target](#recipe_modules-target), [recipe\_engine/platform][recipe_engine/recipe_modules/platform], [recipe\_engine/properties][recipe_engine/recipe_modules/properties], [recipe\_engine/step][recipe_engine/recipe_modules/step] | 
 |  | 
 |  | 
 | — **def [RunSteps](/infra/recipe_modules/target/examples/full.py#13)(api):** | 
 | ### *recipes* / [windows\_sdk:examples/full](/infra/recipe_modules/windows_sdk/examples/full.py) | 
 |  | 
 | [DEPS](/infra/recipe_modules/windows_sdk/examples/full.py#5): [windows\_sdk](#recipe_modules-windows_sdk), [recipe\_engine/platform][recipe_engine/recipe_modules/platform], [recipe\_engine/properties][recipe_engine/recipe_modules/properties], [recipe\_engine/step][recipe_engine/recipe_modules/step] | 
 |  | 
 |  | 
 | — **def [RunSteps](/infra/recipe_modules/windows_sdk/examples/full.py#13)(api):** | 
 |  | 
 | [recipe_engine/recipe_modules/buildbucket]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/9dea1246fd8548d96decbcc0718e1c95fa1d985f/README.recipes.md#recipe_modules-buildbucket | 
 | [recipe_engine/recipe_modules/cas]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/9dea1246fd8548d96decbcc0718e1c95fa1d985f/README.recipes.md#recipe_modules-cas | 
 | [recipe_engine/recipe_modules/cipd]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/9dea1246fd8548d96decbcc0718e1c95fa1d985f/README.recipes.md#recipe_modules-cipd | 
 | [recipe_engine/recipe_modules/context]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/9dea1246fd8548d96decbcc0718e1c95fa1d985f/README.recipes.md#recipe_modules-context | 
 | [recipe_engine/recipe_modules/file]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/9dea1246fd8548d96decbcc0718e1c95fa1d985f/README.recipes.md#recipe_modules-file | 
 | [recipe_engine/recipe_modules/json]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/9dea1246fd8548d96decbcc0718e1c95fa1d985f/README.recipes.md#recipe_modules-json | 
 | [recipe_engine/recipe_modules/path]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/9dea1246fd8548d96decbcc0718e1c95fa1d985f/README.recipes.md#recipe_modules-path | 
 | [recipe_engine/recipe_modules/platform]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/9dea1246fd8548d96decbcc0718e1c95fa1d985f/README.recipes.md#recipe_modules-platform | 
 | [recipe_engine/recipe_modules/properties]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/9dea1246fd8548d96decbcc0718e1c95fa1d985f/README.recipes.md#recipe_modules-properties | 
 | [recipe_engine/recipe_modules/raw_io]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/9dea1246fd8548d96decbcc0718e1c95fa1d985f/README.recipes.md#recipe_modules-raw_io | 
 | [recipe_engine/recipe_modules/step]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/9dea1246fd8548d96decbcc0718e1c95fa1d985f/README.recipes.md#recipe_modules-step | 
 | [recipe_engine/wkt/RecipeApi]: https://chromium.googlesource.com/infra/luci/recipes-py.git/+/9dea1246fd8548d96decbcc0718e1c95fa1d985f/recipe_engine/recipe_api.py#473 |