#from http://www.openexr.com #this imports variables here PackageSetup() if(WIN32) message(FATAL_ERROR "package ${PACKAGE} not currently available for windows") else() #configure based install set(Package_PkgConfig ON) PackageUnixConfigureSimpleAdd( http://download.savannah.gnu.org/releases-noredirect/openexr/ilmbase-1.0.1.tar.gz ) endif()