File gens-libgl.patch of Package gens

--- configure.in
+++ configure.in
@@ -56,7 +56,7 @@
        ])      
        AC_MSG_RESULT($with_opengl)
        if test x$with_opengl = xyes; then
-               LDFLAGS="$LDFLAGS -lGL"
+               LIBS="$LIBS -lGL"
 dnl               CFLAGS="$CFLAGS -D__OPENGL__"
                
        fi