[Gllug] Free Vs enterprise OSS releases

[Daniel P. Berrange]

On Sat, Mar 31, 2007 at 03:24:56PM +0100, Chris Jones wrote:
> Hi
> 
> Daniel P. Berrange wrote:
> > Rebuilding on a machine with same version of RHEL is completely unneccessary.
> 
> Of course building in a chroot is obviously fine, but that's
> functionally the same as building on a machine with the same version of
> RHEL :)

Not neccessarily, no. When mock builds a package in a chroot it will
only populate the chroot with the minimal set of declared build
dependancies. Nothing more nothing less. Most software has a configure
script which will examine the system for its build time dependancies
and may turn off certain features if dependant software is missing,
or turn on features that you don't want as part of the build if you
have extra packages installed. You are also guarenteed that the files
installed into the chroot are pristine - ie completely unchanged from
their original install state, which you can't guarentee just by building
against your normal root fs. So a chroot build is the only way you can
guarentee a 100% consistent & repeatable build process.

Regards,
Dan.
-- 
|=-            GPG key: http://www.berrange.com/~dan/gpgkey.txt       -=|
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|=-   berrange at redhat.com  -  Daniel Berrange  -  dan at berrange.com    -=|
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