[SeaBIOS] [PATCH] build: remove hardcoded timestamp

Ian Campbell ijc at hellion.org.uk
Tue Feb 3 17:38:15 CET 2015

On Tue, 2015-02-03 at 10:58 -0500, Kevin O'Connor wrote:
> On Tue, Feb 03, 2015 at 01:23:53PM +0100, Olaf Hering wrote:
> > The timestamp and hostname carries no value for the default build. If
> > its really required in special environment, or if someone is emotionally
> > attached to such strings, it is is handled by existing logic a few lines
> > above: provide your own .version file
> > 
> > Once this patch is applied it is possible to get reproducible builds of
> > Xens hvmloader.
> I've found the version information to be quite helpful when we get
> trouble reports - it helps indicate what was being run and who built
> the code (eg, distribution or local).  During development cycles, it
> helps verify that test runs are executed with the expected code.
> What breaks if the version changes?
> It should be possible to force a static version with "make
> VERSION='xyz'", but I'd ask that that not be done for production
> builds as it makes handling trouble reports harder.

Olaf posted some similar patches against Xen and it was suggested that
using the git HEAD time and/or "git describe" would help.

We could probably arrange to do this when building SeaBIOS as part of
Xen, or for tarball rather than git builds use the Xen release version?


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