--- a/configure.ac	Thu Nov 22 18:27:09 2007 +0000
+++ b/configure.ac	Thu Nov 22 19:06:38 2007 +0000
@@ -303,6 +303,9 @@
 	AC_MSG_ERROR([
 
 You must have the GLib 2.0 development headers installed to build.
+
+If you have these installed already you may need to install pkg-config so
+I can find them.
 ])])
 AC_SUBST(GLIB_CFLAGS)
 AC_SUBST(GLIB_LIBS)