# simple check for a git repo
if(EXISTS "${CMAKE_SOURCE_DIR}/.git")
	find_package(Git)

    execute_process(
        COMMAND ${GIT_EXECUTABLE} rev-parse --abbrev-ref HEAD
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        OUTPUT_VARIABLE GIT_BRANCH
        OUTPUT_STRIP_TRAILING_WHITESPACE
    )

    execute_process(
        COMMAND ${GIT_EXECUTABLE} log -1 --format=%h
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        OUTPUT_VARIABLE GIT_COMMIT_HASH
        OUTPUT_STRIP_TRAILING_WHITESPACE
    )

    execute_process(
        COMMAND ${GIT_EXECUTABLE} log -1 --format=%ci
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        OUTPUT_VARIABLE GIT_COMMIT_TIME
        OUTPUT_STRIP_TRAILING_WHITESPACE
    )

    execute_process(
        COMMAND ${GIT_EXECUTABLE} describe --long --match "[0-9]*" --abbrev=7 HEAD
        WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
        OUTPUT_VARIABLE GIT_VERSION_NUMBER
        OUTPUT_STRIP_TRAILING_WHITESPACE
    )
else(EXISTS "${CMAKE_SOURCE_DIR}/.git")
    set(GIT_BRANCH "")
    set(GIT_COMMIT_HASH "")
    set(GIT_VERSION_NUMBER "")
    set(BUILD_TYPE "")

endif(EXISTS "${CMAKE_SOURCE_DIR}/.git")

message(STATUS "Git current branch: ${GIT_BRANCH}")
message(STATUS "Git commit hash: ${GIT_COMMIT_HASH}")
message(STATUS "Git commit time: ${GIT_COMMIT_TIME}")
message(STATUS "Git version number: " ${GIT_VERSION_NUMBER} )

configure_file(
  ${CMAKE_SOURCE_DIR}/cmake/version.h.in
  ${BINARY_DIR}/src/lib_gui/version.h
)