87 lines
3 KiB
Markdown
87 lines
3 KiB
Markdown
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# vcpkg_extract_source_archive
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The latest version of this document lives in the [vcpkg repo](https://github.com/Microsoft/vcpkg/blob/master/docs/maintainers/vcpkg_extract_source_archive.md).
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Extract an archive into the source directory.
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## Usage
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There are two "overloads" of this function. The first is deprecated:
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```cmake
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vcpkg_extract_source_archive(<${ARCHIVE}> [<${TARGET_DIRECTORY}>])
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```
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This overload should not be used.
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The latter is suggested to use for all future `vcpkg_extract_source_archive`s.
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```cmake
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vcpkg_extract_source_archive(<out-var>
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ARCHIVE <path>
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[NO_REMOVE_ONE_LEVEL]
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[SKIP_PATCH_CHECK]
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[PATCHES <patch>...]
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[SOURCE_BASE <base>]
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[BASE_DIRECTORY <relative-path> | WORKING_DIRECTORY <absolute-path>]
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)
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```
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`vcpkg_extract_source_archive` takes an archive and extracts it.
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It replaces existing uses of `vcpkg_extract_source_archive_ex`.
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The simplest use of it is:
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```cmake
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vcpkg_download_distfile(archive ...)
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vcpkg_extract_source_archive(source_path ARCHIVE "${archive}")
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```
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The general expectation is that an archives are laid out with a base directory,
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and all the actual files underneath that directory; in other words, if you
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extract the archive, you'll get something that looks like:
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```
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zlib-1.2.11/
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doc/
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...
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examples/
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...
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ChangeLog
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CMakeLists.txt
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README
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zlib.h
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...
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```
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`vcpkg_extract_source_archive` automatically removes this directory,
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and gives you the items under it directly. However, this only works
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when there is exactly one item in the top level of an archive.
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Otherwise, you'll have to pass the `NO_REMOVE_ONE_LEVEL` argument to
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prevent `vcpkg_extract_source_archive` from performing this transformation.
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If the source needs to be patched in some way, the `PATCHES` argument
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allows one to do this, just like other `vcpkg_from_*` functions.
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Additionally, the `SKIP_PATCH_CHECK` is provided for `--head` mode -
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this allows patches to fail to apply silently.
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This argument should _only_ be used when installing a `--head` library,
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since otherwise we want a patch failing to appply to be a hard error.
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`vcpkg_extract_source_archive` extracts the files to
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`${CURRENT_BUILDTREES_DIR}/<base-directory>/<source-base>-<hash>.clean`.
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When in editable mode, no `.clean` is appended,
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to allow for a user to modify the sources.
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`base-directory` defaults to `src`,
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and `source-base` defaults to the stem of `<archive>`.
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You can change these via the `BASE_DIRECTORY` and `SOURCE_BASE` arguments
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respectively.
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If you need to extract to a location that is not based in `CURRENT_BUILDTREES_DIR`,
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you can use the `WORKING_DIRECTORY` argument to do the same.
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## Examples
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* [libraw](https://github.com/Microsoft/vcpkg/blob/master/ports/libraw/portfile.cmake)
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* [protobuf](https://github.com/Microsoft/vcpkg/blob/master/ports/protobuf/portfile.cmake)
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* [msgpack](https://github.com/Microsoft/vcpkg/blob/master/ports/msgpack/portfile.cmake)
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## Source
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[scripts/cmake/vcpkg\_extract\_source\_archive.cmake](https://github.com/Microsoft/vcpkg/blob/master/scripts/cmake/vcpkg_extract_source_archive.cmake)
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