[RFC] Adding libbacktrace

[Ian Lance Taylor]

On Mon, Sep 13, 2021 at 3:46 AM Nick Clifton via Binutils
<binutils@sourceware.org> wrote:
>
> Hi Andrew,
>
> > There seems to be a general problem here that our top-level Makefile
> > scripts will try to build target modules if they are available, even
> > when that's not the right thing to do for binutils-gdb.
> >
> > Any ideas welcome :)
>
> Punt to gcc. :-)
>
> More specifically, since gcc owns the so called "master" version of
> the configure script, they should be the ones to fix this problem.
>
> But I suspect that fixing this might not be at the top of their priority
> list, but if you appeal to Ian Lance Taylor directly ypu may get a better
> response.

For GCC it's necessary for libbacktrace to be both a host module (for
use in gcc itself) and a target module (for use in libgo and
libgfortran).  For binutils/gdb, I don't see any reason for it to be a
target module.  In fact, it's not immediately obvious to me that
binutils/gdb needs any target modules at all.  So perhaps the
binutils/gdb configury should be tweaked to ignore target modules.
Maybe.

In any case I don't think there is anything to change in libbacktrace
itself, this is all a question of how the configury chooses to build
libbacktrace.

Ian