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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug bootstrap/107059] [13 regression] bootstrap failure after
 r13-2887-gb04208895fed34
Date: Wed, 28 Sep 2022 11:18:22 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107059

--- Comment #16 from Tobias Burnus <burnus at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #14)
> ..., so I think we could do:
> --- gcc/cppdefault.cc.jj	2022-01-18 11:58:59.411984500 +0100
> +++ gcc/cppdefault.cc	2022-09-28 12:11:47.923603783 +0200

It tried this now on ppc64le with Ubuntu 18.04.3 LTS (bionic) with glibc
2.27-3ubuntu1
and - because I have used it last - with --enable-multiarch.

However, it still fails. According to strace, it searches:

/tmp/tburnus-gcc-test/gcc/powerpc64le-unknown-linux-gnu/13.0.0/include-fixe=
d/.
/tmp/tburnus-gcc-test/gcc/powerpc64le-linux-gnu/include-fixed/.
/tmp/tburnus-gcc-test/gcc/../lib/gcc/powerpc64le-unknown-linux-gnu/13.0.0/i=
nclude-fixed/powerpc64le-linux-gnu

but not
  /tmp/tburnus-gcc-test/gcc/include-fixed/powerpc64le-linux-gnu

A solution would be
  target=3Dpowerpc64le-linux-gnu
  cd $BUILD/gcc
  if [[ -d include-fixed/$target ]]; then
    mkdir $target;
    ln -s include-fixed/$target $target/include-fixed
  fi
or something similar in the fix-include machinery.=