Does order matter for the rebuilds for the gcc 5.0 C++ ABI change?

Dave Johansen davejohansen at
Wed Feb 18 17:39:16 UTC 2015

On Wed, Feb 18, 2015 at 8:54 AM, Richard W.M. Jones <rjones at>

> On Wed, Feb 18, 2015 at 08:04:53AM -0700, Dave Johansen wrote:
> > I rebuilt libcutl the other day and then noticed that later boost was
> > rebuilt. libcutl depends on boost, so is it a problem that it was rebuilt
> > before boost was?
> Yes.  Jakub Jelinek wrote on this list:
> <quote>
>   Also, a releng mass rebuild, which I believe is a random package order,
>   would very likely not help very much, due to the ABI changes one needs to
>   rebuild the packages in topological order, non-C++ packages or C++
> packages
>   that nothing C++ depends on of course can be left for the mass rebuild,
> but
>   ideally the rest should be rebuilt manually before the mass rebuild.
> </quote>

I had read through the original "results of a test mass rebuild" and didn't
notice anything like that. Sorry for the oversight on my part and thanks
for the info.
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