vcpkg/docs/maintainers/vcpkg_apply_patches.md

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# vcpkg_apply_patches
Apply a set of patches to a source tree.
## Usage
```cmake
vcpkg_apply_patches(
SOURCE_PATH <${SOURCE_PATH}>
[QUIET]
PATCHES <patch1.patch>...
)
```
## Parameters
### SOURCE_PATH
The source path in which apply the patches. By convention, this is usually set in the portfile as the variable `SOURCE_PATH`.
### PATCHES
A list of patches that are applied to the source tree.
Generally, these take the form of `${CMAKE_CURRENT_LIST_DIR}/some.patch` to select patches in the `port\<port>\` directory.
### QUIET
Disables the warning message upon failure.
This should only be used for edge cases, such as patches that are known to fail even on a clean source tree.
## Examples
* [boost](https://github.com/Microsoft/vcpkg/blob/master/ports/boost/portfile.cmake)
* [freetype](https://github.com/Microsoft/vcpkg/blob/master/ports/freetype/portfile.cmake)
* [libpng](https://github.com/Microsoft/vcpkg/blob/master/ports/libpng/portfile.cmake)
## Source
[scripts/cmake/vcpkg_apply_patches.cmake](https://github.com/Microsoft/vcpkg/blob/master/scripts/cmake/vcpkg_apply_patches.cmake)