skein/add_git_version_to_executable.cmake

cmake_minimum_required(VERSION 3.27)
set(CMAKE_VERBOSE_MAKEFILE ON)

# Original path to the target executable
set(TARGET_PATH ${TARGET_DIR}/${PROJECT_NAME})

# The name of the target we're renaming
set(TARGET "${TARGET_PATH}${TARGET_EXTENSION}")

# The command to get the version string from Git
find_package(Git REQUIRED)
execute_process(
    COMMAND ${GIT_EXECUTABLE} describe --always --dirty
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
    OUTPUT_VARIABLE GIT_VERSION
    OUTPUT_STRIP_TRAILING_WHITESPACE
)

if (NOT GIT_VERSION)
    message(FATAL_ERROR "Could not get the Git version")
else()

    # New path containing the Git version
    set(VERSIONED_PATH ${TARGET_PATH}-${GIT_VERSION})

    # Rename the target to include the version string
    execute_process(
        COMMAND ${CMAKE_COMMAND} -E copy ${TARGET} "${VERSIONED_PATH}${TARGET_EXTENSION}"
    )

    # Rename program database file created by VS
    if (EXISTS ${TARGET_PATH}.pdb)
        execute_process(
            COMMAND ${CMAKE_COMMAND} -E copy "${TARGET_PATH}.pdb" "${VERSIONED_PATH}.pdb"
        )
    endif()
endif()