Makefile: Add licence block at the top.

It's going to get more complicated later.  Also provide a bit more
guidance on what can be in local.mk.

diff --git a/Makefile b/Makefile
index 12c685f..7fff00d 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,31 @@
+### -*-makefile-*-
+###
 ### Makefile for firewall scripts
+###
+### (c) 2008 Mark Wooding
+###
 
+###----- Licensing notice ---------------------------------------------------
+###
+### This program is free software; you can redistribute it and/or modify
+### it under the terms of the GNU General Public License as published by
+### the Free Software Foundation; either version 2 of the License, or
+### (at your option) any later version.
+###
+### This program is distributed in the hope that it will be useful,
+### but WITHOUT ANY WARRANTY; without even the implied warranty of
+### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+### GNU General Public License for more details.
+###
+### You should have received a copy of the GNU General Public License
+### along with this program; if not, write to the Free Software Foundation,
+### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+### Makefile for firewall scripts
+
+###--------------------------------------------------------------------------
+### Preamble.
+
+## Extend these variables in `local.mk' to match your site.
 MAIN_M4_SOURCES                 =
 HOSTS                   =
 
@@ -11,7 +37,8 @@ default: all
 ###--------------------------------------------------------------------------
 ### Local configuration.
 
-## Should set up HOSTS and add stuff to MAIN_M4_SOURCES if necessary.
+## Should set up HOSTS and add stuff to MAIN_M4_SOURCES if necessary.  Feel
+## free to define additional targets here.
 include        local.mk
 
 ###--------------------------------------------------------------------------