+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_DEFINE(USE_LIBSN)
+ AC_SUBST(LIBSN_CFLAGS)
+ AC_SUBST(LIBSN_LIBS)
+ ],
+ [
+ no_such_luck=yes
+ ]
+)