+ # check if GNUWIN32_DIR is already set
+ # (e.g. by command line argument or the calling script)
+ if(NOT GNUWIN32_DIR)
+ # check for enviroment variable
+ file(TO_CMAKE_PATH "$ENV{GNUWIN32_DIR}" GNUWIN32_DIR)
+ if(NOT GNUWIN32_DIR)
+ # search in the default program install folder
+ file(TO_CMAKE_PATH "$ENV{PROGRAMFILES}" _progFiles)
+ find_file(GNUWIN32_DIR gnuwin32 win32libs
+ PATHS
+ "${_progFiles}"
+ "C:/" "D:/" "E:/" "F:/" "G:/"
+ )
+ endif()
+ endif()