+AC_ARG_WITH(osx_carbon, [ --with-osx_carbon use Mac OS X (Carbon) ], [wxUSE_OSX_CARBON="$withval" CACHE_OSX_CARBON=1 TOOLKIT_GIVEN=1])
+AC_ARG_WITH(osx_cocoa, [ --with-osx_cocoa use Mac OS X (Cocoa) ], [wxUSE_OSX_COCOA="$withval" CACHE_OSX_COCOA=1 TOOLKIT_GIVEN=1])
+AC_ARG_WITH(mac, [ --with-mac use Mac OS X (Default) ], [wxUSE_OSX_CARBON="$withval" CACHE_OSX_CARBON=1 TOOLKIT_GIVEN=1])