mirror of
https://github.com/microsoft/vcpkg.git
synced 2024-11-27 09:29:00 +08:00
184 lines
7.1 KiB
CMake
184 lines
7.1 KiB
CMake
## # vcpkg_from_github
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##
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## Download and extract a project from GitHub. Enables support for `install --head`.
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##
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## ## Usage:
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## ```cmake
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## vcpkg_from_github(
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## OUT_SOURCE_PATH <SOURCE_PATH>
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## REPO <Microsoft/cpprestsdk>
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## [REF <v2.0.0>]
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## [SHA512 <45d0d7f8cc350...>]
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## [HEAD_REF <master>]
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## [PATCHES <patch1.patch> <patch2.patch>...]
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## )
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## ```
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##
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## ## Parameters:
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## ### OUT_SOURCE_PATH
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## Specifies the out-variable that will contain the extracted location.
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##
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## This should be set to `SOURCE_PATH` by convention.
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##
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## ### REPO
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## The organization or user and repository on GitHub.
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##
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## ### REF
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## A stable git commit-ish (ideally a tag or commit) that will not change contents. **This should not be a branch.**
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##
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## For repositories without official releases, this can be set to the full commit id of the current latest master.
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##
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## If `REF` is specified, `SHA512` must also be specified.
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##
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## ### SHA512
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## The SHA512 hash that should match the archive (https://github.com/${REPO}/archive/${REF}.tar.gz).
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##
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## This is most easily determined by first setting it to `1`, then trying to build the port. The error message will contain the full hash, which can be copied back into the portfile.
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##
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## ### HEAD_REF
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## The unstable git commit-ish (ideally a branch) to pull for `--head` builds.
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##
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## For most projects, this should be `master`. The chosen branch should be one that is expected to be always buildable on all supported platforms.
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##
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## ### PATCHES
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## A list of patches to be applied to the extracted sources.
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##
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## Relative paths are based on the port directory.
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##
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## ## Notes:
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## At least one of `REF` and `HEAD_REF` must be specified, however it is preferable for both to be present.
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##
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## This exports the `VCPKG_HEAD_VERSION` variable during head builds.
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##
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## ## Examples:
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##
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## * [cpprestsdk](https://github.com/Microsoft/vcpkg/blob/master/ports/cpprestsdk/portfile.cmake)
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## * [ms-gsl](https://github.com/Microsoft/vcpkg/blob/master/ports/ms-gsl/portfile.cmake)
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## * [beast](https://github.com/Microsoft/vcpkg/blob/master/ports/beast/portfile.cmake)
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function(vcpkg_from_github)
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set(oneValueArgs OUT_SOURCE_PATH REPO REF SHA512 HEAD_REF)
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set(multipleValuesArgs PATCHES)
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cmake_parse_arguments(_vdud "" "${oneValueArgs}" "${multipleValuesArgs}" ${ARGN})
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if(NOT DEFINED _vdud_OUT_SOURCE_PATH)
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message(FATAL_ERROR "OUT_SOURCE_PATH must be specified.")
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endif()
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if((DEFINED _vdud_REF AND NOT DEFINED _vdud_SHA512) OR (NOT DEFINED _vdud_REF AND DEFINED _vdud_SHA512))
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message(FATAL_ERROR "SHA512 must be specified if REF is specified.")
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endif()
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if(NOT DEFINED _vdud_REPO)
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message(FATAL_ERROR "The GitHub repository must be specified.")
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endif()
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if(NOT DEFINED _vdud_REF AND NOT DEFINED _vdud_HEAD_REF)
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message(FATAL_ERROR "At least one of REF and HEAD_REF must be specified.")
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endif()
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string(REGEX REPLACE ".*/" "" REPO_NAME ${_vdud_REPO})
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string(REGEX REPLACE "/.*" "" ORG_NAME ${_vdud_REPO})
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macro(set_TEMP_SOURCE_PATH BASE BASEREF)
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set(TEMP_SOURCE_PATH "${BASE}/${REPO_NAME}-${BASEREF}")
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if(NOT EXISTS ${TEMP_SOURCE_PATH})
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# Sometimes GitHub strips a leading 'v' off the REF.
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string(REGEX REPLACE "^v" "" REF ${BASEREF})
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string(REPLACE "/" "-" REF ${REF})
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set(TEMP_SOURCE_PATH "${BASE}/${REPO_NAME}-${REF}")
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if(NOT EXISTS ${TEMP_SOURCE_PATH})
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message(FATAL_ERROR "Could not determine source path: '${BASE}/${REPO_NAME}-${BASEREF}' does not exist")
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endif()
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endif()
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endmacro()
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if(VCPKG_USE_HEAD_VERSION AND NOT DEFINED _vdud_HEAD_REF)
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message(STATUS "Package does not specify HEAD_REF. Falling back to non-HEAD version.")
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set(VCPKG_USE_HEAD_VERSION OFF)
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endif()
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# Handle --no-head scenarios
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if(NOT VCPKG_USE_HEAD_VERSION)
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if(NOT _vdud_REF)
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message(FATAL_ERROR "Package does not specify REF. It must built using --head.")
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endif()
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string(REPLACE "/" "-" SANITIZED_REF "${_vdud_REF}")
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vcpkg_download_distfile(ARCHIVE
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URLS "https://github.com/${ORG_NAME}/${REPO_NAME}/archive/${_vdud_REF}.tar.gz"
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SHA512 "${_vdud_SHA512}"
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FILENAME "${ORG_NAME}-${REPO_NAME}-${SANITIZED_REF}.tar.gz"
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)
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vcpkg_extract_source_archive_ex(
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OUT_SOURCE_PATH SOURCE_PATH
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ARCHIVE "${ARCHIVE}"
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REF "${SANITIZED_REF}"
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PATCHES ${_vdud_PATCHES}
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)
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set(${_vdud_OUT_SOURCE_PATH} "${SOURCE_PATH}" PARENT_SCOPE)
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return()
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endif()
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# The following is for --head scenarios
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set(URL "https://github.com/${ORG_NAME}/${REPO_NAME}/archive/${_vdud_HEAD_REF}.tar.gz")
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string(REPLACE "/" "-" SANITIZED_HEAD_REF "${_vdud_HEAD_REF}")
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set(downloaded_file_name "${ORG_NAME}-${REPO_NAME}-${SANITIZED_HEAD_REF}.tar.gz")
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set(downloaded_file_path "${DOWNLOADS}/${downloaded_file_name}")
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if(_VCPKG_NO_DOWNLOADS)
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if(NOT EXISTS ${downloaded_file_path} OR NOT EXISTS ${downloaded_file_path}.version)
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message(FATAL_ERROR "Downloads are disabled, but '${downloaded_file_path}' does not exist.")
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endif()
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message(STATUS "Using cached ${downloaded_file_path}")
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else()
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if(EXISTS ${downloaded_file_path})
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message(STATUS "Purging cached ${downloaded_file_path} to fetch latest (use --no-downloads to suppress)")
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file(REMOVE ${downloaded_file_path})
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endif()
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if(EXISTS ${downloaded_file_path}.version)
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file(REMOVE ${downloaded_file_path}.version)
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endif()
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if(EXISTS ${CURRENT_BUILDTREES_DIR}/src/head)
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file(REMOVE_RECURSE ${CURRENT_BUILDTREES_DIR}/src/head)
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endif()
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# Try to download the file and version information from github.
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vcpkg_download_distfile(ARCHIVE_VERSION
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URLS "https://api.github.com/repos/${ORG_NAME}/${REPO_NAME}/git/refs/heads/${_vdud_HEAD_REF}"
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FILENAME ${downloaded_file_name}.version
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SKIP_SHA512
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)
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vcpkg_download_distfile(ARCHIVE
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URLS ${URL}
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FILENAME ${downloaded_file_name}
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SKIP_SHA512
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)
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endif()
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# Parse the github refs response with regex.
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# TODO: use some JSON swiss-army-knife utility instead.
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file(READ "${downloaded_file_path}.version" _contents)
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string(REGEX MATCH "\"sha\": \"[a-f0-9]+\"" x "${_contents}")
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string(REGEX REPLACE "\"sha\": \"([a-f0-9]+)\"" "\\1" _version ${x})
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# exports VCPKG_HEAD_VERSION to the caller. This will get picked up by ports.cmake after the build.
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# When multiple vcpkg_from_github's are used after each other, only use the version from the first (hopefully the primary one).
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if(NOT DEFINED VCPKG_HEAD_VERSION)
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set(VCPKG_HEAD_VERSION ${_version} PARENT_SCOPE)
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endif()
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vcpkg_extract_source_archive_ex(
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SKIP_PATCH_CHECK
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OUT_SOURCE_PATH SOURCE_PATH
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ARCHIVE "${downloaded_file_path}"
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REF "${SANITIZED_HEAD_REF}"
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WORKING_DIRECTORY ${CURRENT_BUILDTREES_DIR}/src/head
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PATCHES ${_vdud_PATCHES}
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)
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set(${_vdud_OUT_SOURCE_PATH} "${SOURCE_PATH}" PARENT_SCOPE)
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endfunction()
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