kc3-lang/libevent/cmake/VersionViaGit.cmake

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• Hash : a9aa2b36
  Author :
  Date : 2020-05-27T15:39:49
  

  remove FindGit.cmake, improve `git describe` command
  

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• cmake/VersionViaGit.cmake

• # This module defines the following variables utilizing
  # git to determine the parent tag. And if found the macro
  # will attempt to parse them in the github tag fomat
  #
  # Useful for auto-versioning in our CMakeLists
  #
  #  EVENT_GIT___VERSION_MAJOR - Major version.
  #  EVENT_GIT___VERSION_MINOR - Minor version
  #  EVENT_GIT___VERSION_STAGE - Stage version
  #
  # Example usage:
  #
  # event_fuzzy_version_from_git()
  #    message("Libvent major=${EVENT_GIT___VERSION_MAJOR}")
  #    message("        minor=${EVENT_GIT___VERSION_MINOR}")
  #    message("        patch=${EVENT_GIT___VERSION_PATCH}")
  #    message("        stage=${EVENT_GIT___VERSION_STAGE}")
  # endif()
  
  include(FindGit)
  
  macro(event_fuzzy_version_from_git)
  	# set our defaults.
  	set(EVENT_GIT___VERSION_MAJOR 2)
  	set(EVENT_GIT___VERSION_MINOR 2)
  	set(EVENT_GIT___VERSION_PATCH 0)
  	set(EVENT_GIT___VERSION_STAGE "alpha-dev")
  
  	find_package(Git)
  
  	if (GIT_FOUND)
  		execute_process(
  			COMMAND
  				${GIT_EXECUTABLE} describe --abbrev=0 --always
  			WORKING_DIRECTORY
  				${PROJECT_SOURCE_DIR}
  			RESULT_VARIABLE
  				GITRET
  			OUTPUT_VARIABLE
  				GITVERSION
  			OUTPUT_STRIP_TRAILING_WHITESPACE
  		)
  
  		string(REGEX REPLACE "[\\._-]" ";" VERSION_LIST "${GITVERSION}")
  		if(VERSION_LIST)
  			list(LENGTH VERSION_LIST VERSION_LIST_LENGTH)
  		endif()
  
  		if ((GITRET EQUAL 0) AND (VERSION_LIST_LENGTH EQUAL 5))
  			list(GET VERSION_LIST 1 _MAJOR)
  			list(GET VERSION_LIST 2 _MINOR)
  			list(GET VERSION_LIST 3 _PATCH)
  			list(GET VERSION_LIST 4 _STAGE)
  
  			set(_DEFAULT_VERSION "${EVENT_GIT___VERSION_MAJOR}.${EVENT_GIT___VERSION_MINOR}.${EVENT_GIT___VERSION_PATCH}-${EVENT_GIT___VERSION_STAGE}")
  			set(_GIT_VERSION     "${_MAJOR}.${_MINOR}.${_PATCH}-${_STAGE}")
  
  			if (${_DEFAULT_VERSION} VERSION_LESS ${_GIT_VERSION})
  				set(EVENT_GIT___VERSION_MAJOR ${_MAJOR})
  				set(EVENT_GIT___VERSION_MINOR ${_MINOR})
  				set(EVENT_GIT___VERSION_PATCH ${_PATCH})
  				set(EVENT_GIT___VERSION_STAGE ${_STAGE})
  			endif()
  		endif()
  	endif()
  endmacro()
  

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