+# test for GTK+
+AC_PATH_PROGS([GTK_CONFIG], [pkg-config])
+if test -n "$GTK_CONFIG"; then
+ if $GTK_CONFIG gtk+-2.0 --atleast-version=2.0; then
+ GTK_CONFIG="$GTK_CONFIG gtk+-2.0"
+ else
+ AC_MSG_WARN([GTK+ not usable, need at least version 2.0])
+ GTK_CONFIG=
+ fi
+fi
+AC_SUBST([GTK_CONFIG])
+