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# This file provides the function ecm_setup_version().
# ECM_SETUP_VERSION() bundles three things which are usually done for versioned libraries:
# - it sets a set of version variables
# - optionally it creates a C version header file, which can then be installed along with the library
# - optionally it creates a CMake package version file, which can then be installed along with a
# CMake package Config.cmake file
#
# ecm_setup_version(<major> <minor> <patch>
# VARIABLE_PREFIX prefix
# [SOVERSION <soversion>]
# [VERSION_HEADER filename]
# [PACKAGE_VERSION_FILE filename] )
#
#
# ecm_setup_version() sets the following variables
# <prefix>_VERSION_MAJOR = <major>
# <prefix>_VERSION_MINOR = <minor>
# <prefix>_VERSION_PATCH = <patch>
# <prefix>_VERSION_STRING = <major>.<minor>.<patch>
# <prefix>_SOVERSION is set to <major> if <soversion> has not been specified.
#
# If the VERSION_HEADER option is used, a simple C header is generated with the given
# filename. If filename is a relative path, it is interpreted as relative to
# CMAKE_CURRENT_BINARY_DIR.
# The generated header contains the following macros:
# <prefix>_VERSION_MAJOR
# <prefix>_VERSION_MINOR
# <prefix>_VERSION_PATCH
# <prefix>_VERSION_STRING - containing the full version number as a C string
# <prefix>_VERSION - containing the full version combined into one integer
#
# If the PACKAGE_VERSION_FILE option is used, a simple CMake package version
# file is created using the write_basic_package_version_file() macro coming
# with CMake. It should be installed along the Config.cmake file of the library
# into the same directory where it can be found by find_package().
# Also here, if the given filename is a relative path, it is interpreted as
# relative to CMAKE_CURRENT_BINARY_DIR.
# Copyright (c) 2012, Alexander Neundorf, <neundorf@kde.org>
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
include(CMakePackageConfigHelpers)
function(ECM_SETUP_VERSION _major _minor _patch)
set(options )
set(oneValueArgs VARIABLE_PREFIX SOVERSION VERSION_HEADER PACKAGE_VERSION_FILE)
set(multiValueArgs SOVERSION VERSION_HEADER_FILE PACKAGE_VERSION_FILE)
cmake_parse_arguments(ESV "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(ESV_UNPARSED_ARGUMENTS)
message(FATAL_ERROR "Unknown keywords given to ECM_SETUP_VERSION(): \"${ESV_UNPARSED_ARGUMENTS}\"")
endif()
if(NOT ESV_VARIABLE_PREFIX)
message(FATAL_ERROR "Required argument PREFIX missing in ECM_SETUP_VERSION() call")
endif()
if(NOT ESV_SOVERSION)
set(ESV_SOVERSION ${_major})
endif()
set(${ESV_VARIABLE_PREFIX}_VERSION_MAJOR ${_major})
set(${ESV_VARIABLE_PREFIX}_VERSION_MINOR ${_minor})
set(${ESV_VARIABLE_PREFIX}_VERSION_PATCH ${_patch})
set(${ESV_VARIABLE_PREFIX}_SOVERSION ${ESV_SOVERSION})
set(${ESV_VARIABLE_PREFIX}_VERSION_STRING "${_major}.${_minor}.${_patch}")
if(ESV_VERSION_HEADER)
set(PROJECT_NAME_UPPER "${ESV_VARIABLE_PREFIX}")
set(ECM_VERSION_STRING "${${ESV_VARIABLE_PREFIX}_VERSION_STRING}")
set(ECM_VERSION_MAJOR "${${ESV_VARIABLE_PREFIX}_VERSION_MAJOR}")
set(ECM_VERSION_MINOR "${${ESV_VARIABLE_PREFIX}_VERSION_MINOR}")
set(ECM_VERSION_PATCH "${${ESV_VARIABLE_PREFIX}_VERSION_PATCH}")
configure_file("${ECM_MODULE_DIR}/ECMVersionHeader.h.in" "${ESV_VERSION_HEADER}")
endif()
if(ESV_PACKAGE_VERSION_FILE)
write_basic_package_version_file("${ESV_PACKAGE_VERSION_FILE}" VERSION ${_major}.${_minor}.${_patch} COMPATIBILITY AnyNewerVersion)
endif()
set(${ESV_VARIABLE_PREFIX}_VERSION_MAJOR "${${ESV_VARIABLE_PREFIX}_VERSION_MAJOR}" PARENT_SCOPE)
set(${ESV_VARIABLE_PREFIX}_VERSION_MINOR "${${ESV_VARIABLE_PREFIX}_VERSION_MINOR}" PARENT_SCOPE)
set(${ESV_VARIABLE_PREFIX}_VERSION_PATCH "${${ESV_VARIABLE_PREFIX}_VERSION_PATCH}" PARENT_SCOPE)
set(${ESV_VARIABLE_PREFIX}_SOVERSION "${${ESV_VARIABLE_PREFIX}_SOVERSION}" PARENT_SCOPE)
set(${ESV_VARIABLE_PREFIX}_VERSION_STRING "${${ESV_VARIABLE_PREFIX}_VERSION_STRING}" PARENT_SCOPE)
endfunction()
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