Date: Wed, 11 Dec 2013 16:49:54 +0100 From: Dimitry Andric <dim@FreeBSD.org> To: Gergely CZUCZY <gergely.czuczy@harmless.hu> Cc: ports@freebsd.org, office@freebsd.org Subject: Re: devel/boost issues regarding boost/chrono/duration.hpp constexpr definitions with clang Message-ID: <21F55D65-F8C4-4163-9E42-4CAEFF7E3413@FreeBSD.org> In-Reply-To: <20131211132255.00004886@unknown> References: <20131211132255.00004886@unknown>
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On 11 Dec 2013, at 13:22, Gergely CZUCZY <gergely.czuczy@harmless.hu> =
wrote:
> Could you please update boost to 1.55? There's seems to be some issues
> with the current version, which might be fixed later.
>=20
> Namely, on a 9.x default install, built with defaults (gcc as defcc),
> when one is trying to include boost/thread/shared_mutex.hpp and build
> that file with clang:
>=20
> --- BEGIN boostmtx.cc ---
> #include <boost/thread/shared_mutex.hpp>
>=20
> int main() { return 0; }
> --- END boostmtx.cc ---
>=20
> And when trying to build it:
> $ CXXFLAGS=3D"-Werror -pedantic -std=3Dc++11 -I/usr/local/include" =
CXX=3Dclang++ make boostmtx
> clang++ -Werror -pedantic -std=3Dc++11 -I/usr/local/include =
boostmtx.cc -o boostmtx
> In file included from boostmtx.cc:1:
> In file included from =
/usr/local/include/boost/thread/shared_mutex.hpp:21:
> In file included from =
/usr/local/include/boost/thread/pthread/shared_mutex.hpp:13:
> In file included from /usr/local/include/boost/thread/mutex.hpp:16:
> In file included from =
/usr/local/include/boost/thread/pthread/mutex.hpp:12:
> In file included from /usr/local/include/boost/thread/locks.hpp:18:
> In file included from =
/usr/local/include/boost/chrono/time_point.hpp:33:
> /usr/local/include/boost/chrono/duration.hpp:667:28: error: =
'constexpr' non-static member function will not be implicitly 'const' in
> C++1y; add 'const' to avoid a change in behavior =
[-Werror,-Wconstexpr-not-const]
> BOOST_CONSTEXPR bool operator()(const LhsDuration& lhs, const =
RhsDuration& rhs)
> ^
> =
const
Have a look at http://svnweb.freebsd.org/changeset/base/251066 for a =
fix.
Basically, just make the operator() functions themselves const.
-Dimitry
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