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utils.cmake
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function(get_patch_from_git VERSION_PATCH)
find_package(Git QUIET)
if(NOT GIT_FOUND)
message(STATUS "Did not find git package.")
set(PATCH 9999)
else()
# If no tags can be found, it is a git shallow clone
execute_process(COMMAND
${GIT_EXECUTABLE} describe --tags
RESULT_VARIABLE _OUTPUT_VAR
OUTPUT_VARIABLE FULL
ERROR_QUIET
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
if(NOT _OUTPUT_VAR)
execute_process(COMMAND
${GIT_EXECUTABLE} rev-list HEAD --count
RESULT_VARIABLE _OUTPUT_VAR
OUTPUT_VARIABLE PATCH
ERROR_QUIET
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
STRING(STRIP PATCH ${PATCH})
STRING(REGEX REPLACE "\n$" "" PATCH ${PATCH})
STRING(REGEX REPLACE " " "" PATCH ${PATCH})
else()
message(STATUS "Did not find any tag.")
set(PATCH 9999)
endif()
endif()
set(${VERSION_PATCH} ${PATCH} PARENT_SCOPE)
endfunction()
function(set_version VERSION)
# Get Major and Minor from Version.txt
file(STRINGS "Version.txt" VERSION_STR)
foreach(STR ${VERSION_STR})
if(${STR} MATCHES "OR_TOOLS_MAJOR=(.*)")
set(MAJOR ${CMAKE_MATCH_1})
endif()
if(${STR} MATCHES "OR_TOOLS_MINOR=(.*)")
set(MINOR ${CMAKE_MATCH_1})
endif()
endforeach()
# Compute Patch if .git is present otherwise set it to 9999
get_filename_component(GIT_DIR ".git" ABSOLUTE)
if(EXISTS ${GIT_DIR})
get_patch_from_git(PATCH)
else()
set(PATCH 9999)
endif()
set(${VERSION} "${MAJOR}.${MINOR}.${PATCH}" PARENT_SCOPE)
endfunction()
# fetch_git_dependency()
#
# CMake function to download, build and install (in staging area) a dependency at configure
# time.
#
# Parameters:
# NAME: name of the dependency
# REPOSITORY: git url of the dependency
# TAG: tag of the dependency
# PATCH_COMMAND: apply patch
# SOURCE_SUBDIR: Path to source CMakeLists.txt relative to root dir
# CMAKE_ARGS: List of specific CMake args to add
#
# e.g.:
# fetch_git_dependency(
# NAME
# abseil-cpp
# URL
# https://github.com/abseil/abseil-cpp.git
# TAG
# master
# PATCH_COMMAND
# "git apply ${CMAKE_SOURCE_DIR}/patches/abseil-cpp.patch"
# )
function(fetch_git_dependency)
set(options "")
set(oneValueArgs NAME REPOSITORY TAG PATCH_COMMAND SOURCE_SUBDIR)
set(multiValueArgs CMAKE_ARGS)
cmake_parse_arguments(GIT_DEP
"${options}"
"${oneValueArgs}"
"${multiValueArgs}"
${ARGN}
)
message(STATUS "Building ${GIT_DEP_NAME}: ...")
string(TOLOWER ${GIT_DEP_NAME} NAME_LOWER)
if(GIT_DEP_PATCH_COMMAND)
set(PATCH_CMD "${GIT_DEP_PATCH_COMMAND}")
else()
set(PATCH_CMD "")
endif()
configure_file(
${CMAKE_CURRENT_LIST_DIR}/CMakeLists.txt.in
${CMAKE_BINARY_DIR}/_deps/${NAME_LOWER}-subbuild/CMakeLists.txt @ONLY)
execute_process(
COMMAND ${CMAKE_COMMAND} -S. -Bproject_build -G "${CMAKE_GENERATOR}"
RESULT_VARIABLE result
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/_deps/${NAME_LOWER}-subbuild)
if(result)
message(FATAL_ERROR "CMake step for ${GIT_DEP_NAME} failed: ${result}")
endif()
execute_process(
COMMAND ${CMAKE_COMMAND} --build project_build --config ${CMAKE_BUILD_TYPE}
RESULT_VARIABLE result
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/_deps/${NAME_LOWER}-subbuild)
if(result)
message(FATAL_ERROR "Build step for ${GIT_DEP_NAME} failed: ${result}")
endif()
if(GIT_DEP_SOURCE_SUBDIR)
add_subdirectory(
${CMAKE_BINARY_DIR}/_deps/${NAME_LOWER}-src/${GIT_DEP_SOURCE_SUBDIR}
${CMAKE_BINARY_DIR}/_deps/${NAME_LOWER}-build)
else()
add_subdirectory(
${CMAKE_BINARY_DIR}/_deps/${NAME_LOWER}-src
${CMAKE_BINARY_DIR}/_deps/${NAME_LOWER}-build)
endif()
message(STATUS "Building ${GIT_DEP_NAME}: ...DONE")
endfunction()