llvm-project/llvm/utils/benchmark/cmake/GetGitVersion.cmake

55 lines
1.6 KiB
CMake

# - Returns a version string from Git tags
#
# This function inspects the annotated git tags for the project and returns a string
# into a CMake variable
#
# get_git_version(<var>)
#
# - Example
#
# include(GetGitVersion)
# get_git_version(GIT_VERSION)
#
# Requires CMake 2.8.11+
find_package(Git)
if(__get_git_version)
return()
endif()
set(__get_git_version INCLUDED)
function(get_git_version var)
if(GIT_EXECUTABLE)
execute_process(COMMAND ${GIT_EXECUTABLE} describe --match "v[0-9]*.[0-9]*.[0-9]*" --abbrev=8
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
RESULT_VARIABLE status
OUTPUT_VARIABLE GIT_VERSION
ERROR_QUIET)
if(${status})
set(GIT_VERSION "v0.0.0")
else()
string(STRIP ${GIT_VERSION} GIT_VERSION)
string(REGEX REPLACE "-[0-9]+-g" "-" GIT_VERSION ${GIT_VERSION})
endif()
# Work out if the repository is dirty
execute_process(COMMAND ${GIT_EXECUTABLE} update-index -q --refresh
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
OUTPUT_QUIET
ERROR_QUIET)
execute_process(COMMAND ${GIT_EXECUTABLE} diff-index --name-only HEAD --
WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
OUTPUT_VARIABLE GIT_DIFF_INDEX
ERROR_QUIET)
string(COMPARE NOTEQUAL "${GIT_DIFF_INDEX}" "" GIT_DIRTY)
if (${GIT_DIRTY})
set(GIT_VERSION "${GIT_VERSION}-dirty")
endif()
else()
set(GIT_VERSION "v0.0.0")
endif()
message("-- git Version: ${GIT_VERSION}")
set(${var} ${GIT_VERSION} PARENT_SCOPE)
endfunction()