[Users] about live snapshot and qemu-kvm

[R P Herrold]

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On Sun, 29 Dec 2013, Itamar Heim wrote:

> > I for one would very much like to see this built. I was surprised to learn
> > that this was not handled already, because if live snap works in Fedora, why
> > not CentOS, you know...
 
> did anyone ask centos to simply build with this flag to 
> enable these features?

The CentOS bug tracker is open for suggestions from all

The RHEL buildsystem flags used are not published 
systematically by Red Hat, in any venue that I am that I am 
aware of.  Obviously command line 'defines' and build 
environment cause certain conditionals in a .spec file to be 
triggered, one way or the other.  Also the presence of -devel 
type packages in a build chroot, not explicitly enumerated 
through BuildRequires cause the auto-tools to add options 
conditionally.  Tool versions not publically released 
sometimes are used to build packages [there were 'header 
marks' from a gcc [and implied toolchain], that was never 
externally released by Red Hat in the early 6 series, as I 
recall].  And so on.  The complexity explodes combinatorially

... and so a SRPM rebuild effort [of which CentOS is one] 
builds, and tests, sometimes with ldd, and sometimes in other 
ways, to see that a 'close enough' reproduction of the 
binaries issued by Red Hat, are achieved



Out of curiousity, _what_ build environment 'flags' do you 
all, participating in this thread, refer to? -- the thread 
does not enumerate them explicitly, and one cannot expect to 
hit by 'indirect fire', a target not exposed

With best regards, this New Year's eve

- -- Russ herrold

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