tfc_version.cmake

# Run this with CMake in "script mode" (-P flag) at build time

# find Git and if available set GIT_HASH variable
find_package(Git REQUIRED)
if(GIT_FOUND)
  execute_process(
    COMMAND git config --global --add safe.directory ${CMAKE_SOURCE_DIR}
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
  execute_process(
    COMMAND git remote get-url origin
    OUTPUT_VARIABLE GIT_REPO
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
  execute_process(
    COMMAND git log -1 --pretty=format:%H
    OUTPUT_VARIABLE GIT_HASH
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
  execute_process(
    COMMAND git log -1 --pretty=format:"%an <%ae>"
    OUTPUT_VARIABLE GIT_AUTHOR
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
  execute_process(
    COMMAND git branch --show-current
    OUTPUT_VARIABLE GIT_BRANCH
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
  execute_process(
    COMMAND git describe --tags --abbrev=1
    OUTPUT_VARIABLE GIT_TAG
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
  execute_process(
    COMMAND git diff --shortstat
    OUTPUT_VARIABLE GIT_IS_DIRTY_INTERMEDIATE
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
  execute_process(
    COMMAND git log -1 --pretty=format:%as
    OUTPUT_VARIABLE GIT_COMMIT_DATE
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
  execute_process(
    COMMAND date +"%Y-%m-%d %H:%M:%S"
    OUTPUT_VARIABLE BUILD_DATE
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )
else()
  message(FATAL_ERROR "Git not found, cannot generate version.hpp")
endif()
# Write git dirty if GIT_DIRTY_INTERMEDIATE is not empty
if(NOT "${GIT_IS_DIRTY_INTERMEDIATE}" STREQUAL "")
  set(GIT_IS_DIRTY "dirty")
else()
  set(GIT_IS_DIRTY "")
endif()

# Print all git fields
message(STATUS "GIT_REPO: ${GIT_REPO}")
message(STATUS "GIT_HASH: ${GIT_HASH}")
message(STATUS "GIT_AUTHOR: ${GIT_AUTHOR}")
message(STATUS "GIT_BRANCH: ${GIT_BRANCH}")
message(STATUS "GIT_TAG: ${GIT_TAG}")
message(STATUS "GIT_IS_DIRTY: ${GIT_IS_DIRTY}")
message(STATUS "GIT_COMMIT_DATE: ${GIT_COMMIT_DATE}")
message(STATUS "BUILD_DATE: ${BUILD_DATE}")

function(priv_get_directory DIRECTORY)
  set(${DIRECTORY} ${CMAKE_CURRENT_FUNCTION_LIST_DIR} PARENT_SCOPE)
endfunction()
priv_get_directory(THIS_DIRECTORY)

# generate file version.hpp based on version.hpp.in
configure_file(
  ${THIS_DIRECTORY}/inc/version.hpp.in
  ${OUT_FILE}
  @ONLY
)