Re: Bug#907277: autoconf: AC_SEARCH_LIBS for __atomic_foo fails with AC_LANG([C++]) and g++-8
- To: Nick Bowler <nbowler@draconx.ca>, 907277@bugs.debian.org
- Cc: Paul Gevers <elbrus@debian.org>, gcc@packages.debian.org, Chaim Zax <info@zaxx.pro>
- Subject: Re: Bug#907277: autoconf: AC_SEARCH_LIBS for __atomic_foo fails with AC_LANG([C++]) and g++-8
- From: Simon McVittie <smcv@debian.org>
- Date: Sun, 10 Mar 2019 12:41:10 +0000
- Message-id: <[🔎] 20190310124110.GA26087@espresso.pseudorandom.co.uk>
- In-reply-to: <CADyTPEzkQz_c8EPYDK-b20wig_aosLm3fSs7W-X1JGdZeu6OmA@mail.gmail.com>
- References: <153522701164.21891.9873360066429071631.reportbug@localhost> <c820ce5d-56b9-e39b-1c34-509ebb28003c@zaxx.pro> <2a08ed7b-a775-66f8-3b8d-3df4ce162425@debian.org> <78885b05-5b72-f5e9-cd72-a4222998caff@debian.org> <153522701164.21891.9873360066429071631.reportbug@localhost> <CADyTPEzkQz_c8EPYDK-b20wig_aosLm3fSs7W-X1JGdZeu6OmA@mail.gmail.com>
Control: retitle -1 autoconf: AC_SEARCH_LIBS for __atomic_foo fails with AC_LANG([C++]) and g++-8
On Thu, 17 Jan 2019 at 11:00:40 -0500, Nick Bowler wrote:
> I'm not familiar with the library in question but the problem
> appears to be specific to these __atomic_xyz builtins which seem
> to get special treatment in g++. Other builtins I tested do not
> exhibit such failures.
Retitling to reflect the scope of the bug.
https://codesearch.debian.net/search?q=AC_SEARCH_LIBS.*__atomic says this
potentially affects:
* squid (#907106, which was already successfully worked around)
* users of openvswitch's OVS_CHECK_ATOMIC_LIBS (seems to be just
openvswitch itself, which isn't C++ so isn't a problem)
* gnutls28 (isn't C++ so isn't a problem)
* users of gcc-7's phobos libraries.m4
That seems relatively infrequent, so perhaps this bug doesn't need to
be treated as release-critical?
Regards,
smcv
at the Cambridge BSP
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