       if File.exist?("C:/msys00/mingw00")         ENV['RI_DEVKIT'] = "C:\\msys00"         ENV['MSYSTEM']="MINGW00"         ENV['PKG_CONFIG_PATH']="/mingw00/lib/pkgconfig:/mingw00/share/pkgconfig"         ENV['ACLOCAL_PATH']="/mingw00/share/aclocal:/usr/share/aclocal"         ENV['MANPATH']="/mingw00/share/man"         ENV['MINGW_PACKAGE_PREFIX']="mingw-w00-