Re: [gentoo-dev] [PATCH] autotools-multilib: wrapper eclass for multilib builds.

[Michał Górny]

On Mon, 24 Sep 2012 12:17:58 -0300
Alexis Ballier <aballier@g.o> wrote:

> On Sun, 23 Sep 2012 18:31:25 +0200
> Michał Górny <mgorny@g.o> wrote:
>
> > On Sun, 23 Sep 2012 12:47:44 -0300
> > Alexis Ballier <aballier@g.o> wrote:
> >
> > > On Sun, 23 Sep 2012 09:21:20 +0200
> > > Michał Górny <mgorny@g.o> wrote:
> > >
> > > > On Sat, 22 Sep 2012 21:46:02 -0300
> > > > Alexis Ballier <aballier@g.o> wrote:
> > > >
> > > > > On Sat, 22 Sep 2012 23:24:46 +0200
> > > > > Michał Górny <mgorny@g.o> wrote:
> > > > >
> > > > > > It is a simple eclass using autotools out-of-source builds to
> > > > > > build packages for multiple ABIs when multilib is supported.
> > > > > >
> > > > >
> > > > > to some extent, can't you do the same by unpacking twice to
> > > > > different $S and calling src_prepare/compile/install instead of
> > > > > their autotools-utils counterpart with tweaked $S so that it
> > > > > works with almost every ebuild ?
> > > >
> > > > That would make this solution inefficient.
> > >
> > > Why ?
> >
> > Because it introduces unnecessarily copying files around.
>
> cp -l ? I can live with that.

Can you guarantee that the build system won't modify any file
in the source tree? And AFAIR we don't have any COW filesystems
in Gentoo.

So it's back to optimized solution vs bad, universal solution.

-- 
Best regards,
Michał Górny