cmake/VersionViaGit.cmake

   1 # This module defines the following variables utilizing
   2 # git to determine the parent tag. And if found the macro
   3 # will attempt to parse them in the github tag fomat
   4 #
   5 # Useful for auto-versioning in our CMakeLists
   6 #
   7 #  EVENT_GIT___VERSION_MAJOR - Major version.
   8 #  EVENT_GIT___VERSION_MINOR - Minor version
   9 #  EVENT_GIT___VERSION_STAGE - Stage version
  10 #
  11 # Example usage:
  12 #
  13 # event_fuzzy_version_from_git()
  14 #    message("Libvent major=${EVENT_GIT___VERSION_MAJOR}")
  15 #    message("        minor=${EVENT_GIT___VERSION_MINOR}")
  16 #    message("        patch=${EVENT_GIT___VERSION_PATCH}")
  17 #    message("        stage=${EVENT_GIT___VERSION_STAGE}")
  18 # endif()
  19
  20 include(FindGit)
  21
  22 macro(event_fuzzy_version_from_git)
  23         # set our defaults.
  24         set(EVENT_GIT___VERSION_MAJOR 2)
  25         set(EVENT_GIT___VERSION_MINOR 1)
  26         set(EVENT_GIT___VERSION_PATCH 10)
  27         set(EVENT_GIT___VERSION_STAGE "beta")
  28
  29         find_package(Git)
  30
  31         if (GIT_FOUND)
  32                 execute_process(
  33                         COMMAND
  34                                 ${GIT_EXECUTABLE} describe --abbrev=0
  35                         WORKING_DIRECTORY
  36                                 ${PROJECT_SOURCE_DIR}
  37                         RESULT_VARIABLE
  38                                 GITRET
  39                         OUTPUT_VARIABLE
  40                                 GITVERSION
  41                         OUTPUT_STRIP_TRAILING_WHITESPACE
  42                 )
  43
  44                 string(REGEX REPLACE "[\\._-]" ";" VERSION_LIST "${GITVERSION}")
  45                 list(LENGTH VERSION_LIST VERSION_LIST_LENGTH)
  46
  47                 if ((GITRET EQUAL 0) AND (VERSION_LIST_LENGTH EQUAL 5))
  48                         list(GET VERSION_LIST 1 _MAJOR)
  49                         list(GET VERSION_LIST 2 _MINOR)
  50                         list(GET VERSION_LIST 3 _PATCH)
  51                         list(GET VERSION_LIST 4 _STAGE)
  52
  53                         set(_DEFAULT_VERSION "${EVENT_GIT___VERSION_MAJOR}.${EVENT_GIT___VERSION_MINOR}.${EVENT_GIT___VERSION_PATCH}-${EVENT_GIT___VERSION_STAGE}")
  54                         set(_GIT_VERSION     "${_MAJOR}.${_MINOR}.${_PATCH}-${_STAGE}")
  55
  56                         if (${_DEFAULT_VERSION} VERSION_LESS ${_GIT_VERSION})
  57                                 set(EVENT_GIT___VERSION_MAJOR ${_MAJOR})
  58                                 set(EVENT_GIT___VERSION_MINOR ${_MINOR})
  59                                 set(EVENT_GIT___VERSION_PATCH ${_PATCH})
  60                                 set(EVENT_GIT___VERSION_STAGE ${_STAGE})
  61                         endif()
  62                 endif()
  63         endif()
  64 endmacro()