SET(CMAKE_SYSTEM_NAME Windows) include(CMakeForceCompiler) IF("${GNU_HOST}" STREQUAL "") SET(GNU_HOST i586-mingw32msvc) ENDIF() # Prefix detection only works with compiler id "GNU" CMAKE_FORCE_C_COMPILER(${GNU_HOST}-gcc GNU) # CMake doesn't automatically look for prefixed 'windres', do it manually: SET(CMAKE_RC_COMPILER ${GNU_HOST}-windres)