Re: Help needed with maintainer-mode

[Christophe Lyon <christophe.lyon@linaro.org>]

On Thu, 29 Feb 2024 at 20:49, Thiago Jung Bauermann
<thiago.bauermann@linaro.org> wrote:
>
>
> Hello,
>
> Christophe Lyon <christophe.lyon@linaro.org> writes:
>
> > I hoped improving this would be as simple as adding
> > --enable-maintainer-mode when configuring, after making sure
> > autoconf-2.69 and automake-1.15.1 were in the PATH (using our host's
> > libtool and gettext seems OK).
> >
> > However, doing so triggered several problems, which look like race
> > conditions in the build system (we build at -j160):
> > - random build errors in binutils / gdb with messages like "No rule to
> > make target 'po/BLD-POTFILES.in". I managed to reproduce something
> > similar manually once, I noticed an empty Makefile; the build logs are
> > of course difficult to read, so I couldn't figure out yet what could
> > cause this.
> >
> > - random build failures in gcc in fixincludes. I think this is a race
> > condition because fixincludes is updated concurrently both from
> > /fixincludes and $buillddir/fixincludes. Probably fixable in gcc
> > Makefiles.
> >
> > - I've seen other errors when building gcc like
> > configure.ac:25: error: possibly undefined macro: AM_ENABLE_MULTILIB
> > from libquadmath. I haven't investigated this yet.
>
> I don't know about the last one, but regarding the race conditions, one
> workaround might be to define a make target that regenerates all files
> (if one doesn't exist already, I don't know) and make the CI call it
> with -j1 to avoid concurrency, and then do the regular build step with
> -j160.
>

Yes, that's what I meant below with "magic" make target ;-)

Thanks,

Christophe

> --
> Thiago