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# 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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