-# Uncomment links to HOpenGL docs if necessary
-AC_ARG_ENABLE([hopengl],
- AC_HELP_STRING([--enable-hopengl],
- [Build HOpenGL, a Haskell binding for OpenGL/GLUT.]))
-FP_HTML_COMMENT([{ test x"$enable_hopengl" = xyes || test x"$enable_hopengl" = xx11; }], [HOpenGL])
+# 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])