gentoo-overlay/games-arcade/xbill/files/xbill-2.1-gtk2.patch

--- a/configure.in	2007-12-05 22:37:57.000000000 +0100
+++ b/configure.in	2007-12-05 22:54:57.000000000 +0100
@@ -88,12 +88,11 @@
 	[  --enable-gtk            build with the GTK widget set])
 
 if test "$enable_gtk" != "no"; then
-	AC_CHECK_PROG(GTKCONFIG, gtk-config, yes, no)
+	PKG_CHECK_MODULES(GTK, gtk+-2.0)
 
-	if test "X$GTKCONFIG" = X"yes"; then
+	if test $pkg_failed = no; then
 		AC_DEFINE(USE_GTK)
-		GTK_CFLAGS="`gtk-config --cflags`"
-		WIDGET_LIBS="$WIDGET_LIBS `gtk-config --libs`"
+		WIDGET_LIBS="$WIDGET_LIBS $GTK_LIBS"
 		WIDGET_OBJS="$WIDGET_OBJS gtk.o"
 	fi
 fi