+DX_PROG_FLEX([], [have_flex=yes], [have_flex=no])
+AM_CONDITIONAL([HAVE_FLEX], [test x"$have_flex" = x"yes"])
+
+DX_LIB_GLIB2
+
+dnl Dependencies for test suite
+DX_LIB_GLIB2([], [gobject], [HAVE_GOBJECT=true], [HAVE_GOBJECT=false])
+AC_SUBST([HAVE_GOBJECT])
+
+DX_LIB_GTK2([], [HAVE_GTK2=true], [HAVE_GTK2=false])
+AC_SUBST([HAVE_GTK2])