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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libgomp/96661] configure:16984: error: unsupported system,
 cannot find Fortran int kind=16
Date: Mon, 17 Aug 2020 18:10:21 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96661

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> ---
(In reply to John David Anglin from comment #0)
> Guess this is because target doesn't support int128.

For "omp depend", the OpenMP spec requires that an integer type is used =E2=
=80=93 and
the libgomp implementation uses two pointer [=3D 2*sizeof(void*)] for this.

If (as I assume) hppa64-hp-hpux11.11 uses 64bit pointers, this indeed means
that in128 is needed.

In principle, OpenMP should have used some opaque data type (user-defined
derived type). But as they didn't think of this when specifying the data ty=
pe
and the best choice for the implementation in GCC was to have storage for t=
wo
pointers, I now have this problem.

I do not see an easy way out; we had the same issue before with GCN and the=
re
the solution was to add support for int128, cf. PR 96306.

> For the most part, libgomp used to work on this target.

Probably still the case when ignoring the 'depend' feature in Fortran...=