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Re: [Qemu-devel] including the "git describe" output in the QEMU binarie

From: Daniel P. Berrange
Subject: Re: [Qemu-devel] including the "git describe" output in the QEMU binaries?
Date: Tue, 31 May 2016 14:19:42 +0100
User-agent: Mutt/1.6.0 (2016-04-01)

On Tue, May 31, 2016 at 12:32:48PM +0100, Daniel P. Berrange wrote:
> On Tue, May 31, 2016 at 01:16:14PM +0200, Laszlo Ersek wrote:
> > Hi,
> > 
> > has this been raised / considered before? To me at least it would be
> > extremely useful if QEMU binaries built from a git working directory
> > returned the output of "git describe" (+ possibly a hint about an
> > unclean working directory), when invoked with "-version".
> > 
> > Not volunteering for the implementation, and also not suggesting /
> > requesting that others implement it (everyone is busy with real stuff,
> > I'm sure); just asking if it's been considered.
> Currently configure supports a --pkgversion flag which is used by people
> packaging QEMU in RPM/Debs to include their arbitrary custom version string.
> This information is then reported by -version and the appropriate QMP
> command.
> We could quite easily make configure default the pkgversion to the current
> GIT hash if --pkgversion is not explicitly given.

Oh and the nice thing about this is that it is plumbed into libvirt, so
whenever libvirt starts a guest, it will log the pkgversion associated
with QEMU to /var/log/libvirt/qemu/$GUEST.log

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