require 'mkmf' qt_dir = with_config('qt-dir') qt_include_dir = qt_dir + '/include/qt' if qt_dir qt_include_dir = with_config('qt-include-dir', qt_include_dir) qt_lib_dir = qt_dir + '/lib' if qt_dir qt_lib_dir = with_config('qt-lib-dir', qt_lib_dir) $CFLAGS = "-I#{qt_include_dir}" if qt_include_dir $LDFLAGS = "-L#{qt_lib_dir}" if qt_lib_dir if have_header('qapplication.h') and have_library('qt') create_makefile('qt') end