version.cmake

   1 # based on https://www.mattkeeter.com/blog/2018-01-06-versioning/
   2
   3 execute_process(COMMAND git describe --tags --dirty --always
   4                 OUTPUT_VARIABLE GIT_REV
   5                 ERROR_QUIET)
   6
   7 # Check whether we got any revision (which isn't
   8 # always the case, e.g. when someone downloaded a zip
   9 # file from Github instead of a checkout)
  10 if ("${GIT_REV}" STREQUAL "")
  11     set(GIT_REV "N/A")
  12     set(GIT_BRANCH "N/A")
  13 else()
  14     execute_process(
  15         COMMAND git rev-parse --abbrev-ref HEAD
  16         OUTPUT_VARIABLE GIT_BRANCH)
  17
  18     string(STRIP "${GIT_REV}" GIT_REV)
  19     string(STRIP "${GIT_BRANCH}" GIT_BRANCH)
  20 endif()
  21
  22 set(VERSION "const char* GIT_REV=\"${GIT_REV}\";
  23 const char* GIT_BRANCH=\"${GIT_BRANCH}\";")
  24
  25 if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/qpms_version.c)
  26     file(READ ${CMAKE_CURRENT_SOURCE_DIR}/qpms_version.c VERSION_)
  27 else()
  28     set(VERSION_ "")
  29 endif()
  30
  31 if (NOT "${VERSION}" STREQUAL "${VERSION_}")
  32     file(WRITE ${CMAKE_CURRENT_SOURCE_DIR}/qpms_version.c "${VERSION}")
  33 endif()
  34