From owner-freebsd-bugs  Wed Jan 30 16:19:42 2002
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Subject: Re: conf/6346: Kernel version strings need to relate to the source not the build
In-Reply-To: <D7A1AE69-15D6-11D6-B21B-0003930737AC@dataplex.net> from "Richard Wackerbarth" at "Jan 30, 2 05:12:33 pm"
To: rkw@dataplex.net (Richard Wackerbarth)
Date: Thu, 31 Jan 2002 03:26:31 +0300 (MSK)
Cc: joe@tao.org.uk, sheldonh@FreeBSD.ORG, freebsd-bugs@FreeBSD.ORG,
	bde@zeta.org.au
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Richard Wackerbarth writes:
> 
> On Wednesday, January 30, 2002, at 01:58 PM, Bruce Evans wrote:
> 
> > On Wed, 30 Jan 2002, Josef Karthauser wrote:
> >
> >> On Wed, Jan 30, 2002 at 05:40:41PM +0000, Josef Karthauser wrote:
> >>> Technically we could use the date in the latest $FreeBSD$ tag of the
> >>> source code, and then put this into vers.c at kernel build time.
> >>>
> >>> The following patch would do it.
> >>>
> >>> Joe
> >>>
> >>> Index: newvers.sh
> >>> ===================================================================
> >>> RCS file: /home/ncvs/src/sys/conf/newvers.sh,v
> >>> retrieving revision 1.47
> >>> diff -u -r1.47 newvers.sh
> >>> --- newvers.sh	2 Mar 2001 16:52:13 -0000	1.47
> >>> +++ newvers.sh	30 Jan 2002 17:39:42 -0000
> >>> @@ -86,11 +86,15 @@
> >>>
> >>>  touch version
> >>>  v=`cat version` u=${USER-root} d=`pwd` h=`hostname` t=`date`
> >>> +
> >>> +l=`find /usr/src/sys/conf | xargs grep '\$FreeBSD:.*$' | sed \
> >>> +    's/.*\$FreeBSD://' | awk '{ print $3 "-" $4 }' | sort -n | tail 
> >>> -1`
> >>> +
> >>
> >> Oops: s/\/conf//.  (That was my test).
> >
> > That slows it down enough to be annoying.  Also, the path shouldn't be
> > absolute.
> >
> > Bruce
> 
> I think we could actually do it just once (at the time that we update 
> from the cvs?) and cache that result.
> That would get rid of at least a part of the delay.
> 
> It can also be done by playing games on a special file in the master cvs 
> archive (but not the copies thereof)
Exactly.
What about do
date +'#define LAST_MOD "%Y-%m-%d %H:%M:%S"' > /path/last_mod_date.h
on any CVS tree update?
And #include <last_mod_date.h>

> --
> Richard Wackerbarth				The Digital Dataplex
> (512) 346-5772					8801 Camelia Ln
> rkw@dataplex.net					Austin, TX 78759
> 
> 
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