note the use of GNU make extensions.
diff --git a/solaris/Makefile.am b/solaris/Makefile.am
index acccbdb..8cfd141 100644
--- a/solaris/Makefile.am
+++ b/solaris/Makefile.am
@@ -1,5 +1,7 @@
 # Solaris packages automake file
-# $Id: Makefile.am,v 1.7 2006/02/19 18:59:26 paul Exp $
+# $Id$
+
+# XXX This file uses GNU make extensions.
 
 .PHONY: packages