--- gpac-0.4.5-r5.ebuild	2012-02-21 23:01:19.000000000 +0100
+++ gpac-0.4.5-r6.ebuild	2012-04-01 00:22:20.000000000 +0200
@@ -94,6 +94,9 @@
 	sed -i -e 's:$(prefix)/lib:$(prefix)/'$(get_libdir)':' Makefile src/Makefile
 	sed -i -e 's:/lib/gpac:/'$(get_libdir)'/gpac:' configure
 
+	# underlinking fix
+	sed -i -e 's: -lz: -lz -lgdk-x11-2.0 -lgtk-x11-2.0 -lX11:' applications/osmo4_wx/Makefile
+
 	# --warn-common is linker option, not gcc's one
 	sed -i 's/-Wl --warn-common/-Wl,--warn-common/g' configure
 }