find_package(Git QUIET)
if (Git_FOUND AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/.git")
  message("git found")
  execute_process(
    COMMAND ${GIT_EXECUTABLE} rev-list --count HEAD
    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
    OUTPUT_VARIABLE git_version
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
else()
  set(git_version 0)
endif()