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# - Utility function for Find modules considering multiple possible versions
#
# Requires these CMake modules:
# no additional modules required
#
# Original Author:
# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
# http://academic.cleardefinition.com
# Iowa State University HCI Graduate Program/VRAC
#
# Copyright Iowa State University 2009-2010.
# Distributed under the Boost Software License, Version 1.0.
# (See accompanying file LICENSE_1_0.txt or copy at
# http://www.boost.org/LICENSE_1_0.txt)
if(__check_version)
return()
endif()
set(__check_version YES)
function(check_version var packagename version)
# By default, we say that the version is good enough
set(_result TRUE)
# Was a version requested? If so, what is our test condition?
if(${packagename}_FIND_VERSION)
if(${packagename}_FIND_VERSION_EXACT)
# Yes, an exact == version was requested - check it.
if(NOT "${version}" VERSION_EQUAL "${${packagename}_FIND_VERSION}")
# version is not an exact match
set(_result FALSE)
endif()
else()
# Yes, a minimum >= version was requested - check it.
if("${version}" VERSION_LESS "${${packagename}_FIND_VERSION}")
# version is lower than requested
set(_result FALSE)
endif()
endif()
endif()
# Return _result
set(${var} ${_result} PARENT_SCOPE)
endfunction()
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