+PKG_CHECK_MODULES([GLIB], [glib-2.0])
+AC_SUBST(GLIB_CFLAGS)
+AC_SUBST(GLIB_LIBS)
+
+PKG_CHECK_MODULES([GMODULE], [gmodule-2.0])
+AC_SUBST(GMODULE_CFLAGS)
+AC_SUBST(GMODULE_LIBS)
+
+PKG_CHECK_MODULES(XFT, [xft])
+AC_SUBST(XFT_CFLAGS)
+AC_SUBST(XFT_LIBS)
+
+PKG_CHECK_MODULES(LIBSN, [libstartup-notification-1.0])
+AC_SUBST(LIBSN_CFLAGS)
+AC_SUBST(LIBSN_LIBS)
+if test "$LIBSN_LIBS"; then
+ AC_DEFINE(USE_LIBSN)
+fi