diff -urN funcopt.orig/Makefile.in funcopt/Makefile.in
--- funcopt.orig/Makefile.in	Tue Aug  1 18:25:48 2006
+++ funcopt/Makefile.in	Tue Aug  1 18:26:58 2006
@@ -117,7 +117,7 @@
 INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
 LDFLAGS = @LDFLAGS@
 LIBOBJS = @LIBOBJS@
-LIBS = -L../libevocosm -lcoyotl -levocosm
+LIBS = -L../libevocosm -lcoyotl -levocosm -lpng
 LIBTOOL = @LIBTOOL@
 LN_S = @LN_S@
 LTLIBOBJS = @LTLIBOBJS@