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Re: [PATCH] Fix libstdc++ tests requiring atomic support on hppa-hpux

From: Joseph Myers <joseph at codesourcery dot com>
To: Hans-Peter Nilsson <hp at bitrange dot com>
Cc: Jonathan Wakely <jwakely at redhat dot com>, John David Anglin <dave dot anglin at bell dot net>, GCC Patches <gcc-patches at gcc dot gnu dot org>, <libstdc++ at gcc dot gnu dot org>
Date: Wed, 13 Mar 2019 01:57:19 +0000
Subject: Re: [PATCH] Fix libstdc++ tests requiring atomic support on hppa-hpux
References: <54b2ad46-4e9c-1abe-07f9-7d123ff63c47@bell.net> <20190311120137.GW21503@redhat.com> <alpine.BSF.2.20.16.1903122135001.10147@arjuna.pair.com>

On Tue, 12 Mar 2019, Hans-Peter Nilsson wrote:

> When is it appropriate to make the user add -latomic to link
> their program?  Perhaps different answers for fortran and C++.
> I'm guessing "always when using any atomic construct" for C.

I think we should link with --as-needed -latomic --no-as-needed by default 
when --as-needed is supported (see bug 81358).

-- 
Joseph S. Myers
joseph@codesourcery.com

References:
- [PATCH] Fix libstdc++ tests requiring atomic support on hppa-hpux
  - From: John David Anglin
- Re: [PATCH] Fix libstdc++ tests requiring atomic support on hppa-hpux
  - From: Jonathan Wakely
- Re: [PATCH] Fix libstdc++ tests requiring atomic support on hppa-hpux
  - From: Hans-Peter Nilsson

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