version.cmake

find_package(Git)
# 生成版本描述字符串类似 TAG-X-gHASH
execute_process(COMMAND ${GIT_EXECUTABLE} describe --abbrev=6 --dirty --always --tags
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    OUTPUT_VARIABLE  GIT_REPO_VERSION
    OUTPUT_STRIP_TRAILING_WHITESPACE
)
# 获取最新 commit 日期，YYYY-MM-DD
execute_process(COMMAND ${GIT_EXECUTABLE} log -1 --format=%ci --date=short
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    OUTPUT_VARIABLE  GIT_REPO_DATE
    OUTPUT_STRIP_TRAILING_WHITESPACE
)
# 获取最新 commit Hash
execute_process(COMMAND ${GIT_EXECUTABLE} log -1 --format=%H
    WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
    OUTPUT_VARIABLE  GIT_REPO_HASH
    OUTPUT_STRIP_TRAILING_WHITESPACE
)
# 写入头文件宏定义的版本字符串，日期和 Hash
file(WRITE ${PROJECT_BINARY_DIR}/repo_version.h
    "#define REPO_VERSION \"${GIT_REPO_VERSION}\"\n#define REPO_DATE \"${GIT_REPO_DATE}\"\n#define REPO_HASH \"${GIT_REPO_HASH}\"\n"
)
# 包含引用目录，源文件可以直接用 #include "repo_version.h" 包含
include_directories(${PROJECT_BINARY_DIR})