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CMake

# === This file is part of Calamares - <https://calamares.io> ===
#
# SPDX-FileCopyrightText: 2014 Teo Mrnjavac <teo@kde.org>
# SPDX-FileCopyrightText: 2021 Adriaan de Groot <groot@kde.org>
# SPDX-License-Identifier: BSD-2-Clause
#
###
#
# This file defines one function for extending a VERSION-like value
# with date and git information (if desired).
#
# - extend_version( version-string short_only short_var long_var )
# Calling this function will copy *version-string* (which would typically
# be a semver-style string, like "3.2.40") into the variable *short_var*.
# If *short_only* is true, then:
# - the short version is also copied into the variable *long_var*,
# If *short_only* is false, then:
# - the *version-string* plus date and git information, is copied
# into the varialbe *long_var*, in the format {version}-{date}-{hash}
#
#
function( get_git_version_info out_var )
set(CMAKE_VERSION_SOURCE "")
if(EXISTS ${CMAKE_SOURCE_DIR}/.git/HEAD)
find_program(GIT_EXECUTABLE NAMES git git.cmd)
mark_as_advanced(GIT_EXECUTABLE)
if(GIT_EXECUTABLE)
execute_process(
COMMAND ${GIT_EXECUTABLE} rev-parse --verify -q --short=8 HEAD
OUTPUT_VARIABLE head
OUTPUT_STRIP_TRAILING_WHITESPACE
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
)
if(head)
set(CMAKE_VERSION_SOURCE "${head}")
execute_process(
COMMAND ${GIT_EXECUTABLE} update-index -q --refresh
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
)
execute_process(
COMMAND ${GIT_EXECUTABLE} diff-index --name-only HEAD --
OUTPUT_VARIABLE dirty
OUTPUT_STRIP_TRAILING_WHITESPACE
WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
)
if(dirty)
set(CMAKE_VERSION_SOURCE "${CMAKE_VERSION_SOURCE}-dirty")
endif()
endif()
endif()
endif()
set( ${out_var} "${CMAKE_VERSION_SOURCE}" PARENT_SCOPE )
endfunction()
function( extend_version version short_only short_var long_var )
set( ${short_var} "${version}" PARENT_SCOPE )
set( _v "${version}" )
if ( NOT short_only )
# Additional info for non-release builds which want "long" version info
# with date and git information (commit, dirty status). That is used only
# by CalamaresVersionX.h, which is included by consumers that need a full
# version number with all that information; normal consumers can include
# CalamaresVersion.h with more stable numbers.
string( TIMESTAMP CALAMARES_VERSION_DATE "%Y%m%d" )
if( CALAMARES_VERSION_DATE GREATER 0 )
set( _v ${_v}.${CALAMARES_VERSION_DATE} )
endif()
get_git_version_info( _gitv )
if( _gitv )
set( _v "${_v}-${_gitv}" )
endif()
endif()
set( ${long_var} "${_v}" PARENT_SCOPE )
endfunction()