Paul, I have two files in usr/local/lib/pkgconfig they are libpng.pc and libpng12.pc. I checked the last line of libpng.pc and the cflags was exactly as yours except /libpng12 was missing after {includedir}. Could this have something to do with m4 since you mentioned macros? I installed a new m4 into /usr. Anyway I'll change the libpng.pc file and see what happens. Bill _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list