Is Makefile.inc1 in 6 wrong?

[Lars Eighner]

It appears to me that either I have a wrong version of awk or
this Makefile.inc1 is wrong:

#
# $FreeBSD: src/Makefile.inc1,v 1.499.2.11 2006/04/04 14:24:03 glebius Exp $
#

<Snippage>

MAKEOBJDIRPREFIX?=	/usr/obj
.if !defined(OSRELDATE)
.if exists(/usr/include/osreldate.h)
OSRELDATE!=	awk '/^\#define[[:space:]]*__FreeBSD_version/ { print $$3 }' \
 		/usr/include/osreldate.h
.else
OSRELDATE=	0


In particular with the double dollar sign in the awk statement,
I get no return, therefore OSRELDATE gets set to 0.  The awk
statement also fails from the command line.  But if I use only
one $, the awk statement succeeds.

Is there a reason for the double dollar sign?  Is something
wrong with my awk?  Or is the Makefile.inc1 wrong?  I can't seem
to find a switch to get awk to return its version number.


Here is /usr/include/osreldate.h

/*-
  * Copyright (c) 1992-2006 The FreeBSD Project.
  * All rights reserved.
  *
<snippage>
  * SUCH DAMAGE.
  *
  */

#ifdef _KERNEL
#error "<osreldate.h> cannot be used in the kernel, use <sys/param.h>"
#else
#undef __FreeBSD_version
#define __FreeBSD_version 504105
#endif

Here are the two awk statements run in an editor shell:

Tue Apr 04 16:09:48 bash3.1:ttyp0:eighner
goodwill~$awk '/^\#define __FreeBSD_version/ {print $$3}' /usr/include/os<ne __FreeBSD_version/ {print $$3}' /usr/include/osreldate.h

Tue Apr 04 16:11:08 bash3.1:ttyp0:eighner
goodwill~$awk '/^\#define __FreeBSD_version/ {print $3}' /usr/include/osr<ne __FreeBSD_version/ {print $3}' /usr/include/osreldate.h
504105
Tue Apr 04 16:12:12 bash3.1:ttyp0:eighner
goodwill~$exit
exit

In otherwords, $$= no return, $= right answer.

Should I upgrade my awk in some way?  Or should I hope the
maintainer will fix the Makefile?


-- 
Lars Eighner
eighner at io.com  lars at larseighner.com
http://www.larseighner.com/index.html
8800 N IH35 APT 1191 AUSTIN TX 78753-5266