Date: Wed, 27 Nov 2013 19:31:44 +0100 From: Jan Henrik Sylvester <me@janh.de> To: Steve Kargl <sgk@troutmask.apl.washington.edu> Cc: Dimitry Andric <dim@FreeBSD.org>, David Chisnall <theraven@FreeBSD.org>, Andriy Gapon <avg@FreeBSD.org>, Maho Nakata <maho@FreeBSD.org>, FreeBSD Current <freebsd-current@FreeBSD.org>, Ryan Stone <rysto32@gmail.com> Subject: Re: Re: libc++ vs. libstdc++ usage in the ports tree Message-ID: <52963A90.4000201@janh.de> In-Reply-To: <20131114144555.GA22093@troutmask.apl.washington.edu> References: <77CB2B92-216A-4C80-B033-7E582B5F0DFC@FreeBSD.org> <20131112165422.GA2939@troutmask.apl.washington.edu> <E0FE40D9-726C-4501-B31A-3622510C1C68@FreeBSD.org> <20131112175556.GA3319@troutmask.apl.washington.edu> <20131112201922.GA4330@troutmask.apl.washington.edu> <20131113173143.Horde.a-9M7JQ_vHo3tpDIMsGK6g1@webmail.df.eu> <CAFMmRNxk25AJ3TMuceSG=EmL3qSE9Xhk_wpL5pAD8YvZrA6gkg@mail.gmail.com> <5283CA3C.3080201@FreeBSD.org> <352D9465-9840-43F0-A3A9-327DC12B0967@FreeBSD.org> <B2F7EDA4-DF34-4D5D-B995-5ADA1A9898D8@FreeBSD.org> <20131114144555.GA22093@troutmask.apl.washington.edu>
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On 11/14/2013 15:45, Steve Kargl wrote: > On Thu, Nov 14, 2013 at 09:54:52AM +0000, David Chisnall wrote: >> On 13 Nov 2013, at 19:40, Dimitry Andric <dim@freebsd.org> wrote: >> >>> On the other hand, different C++ standard libraries simply cannot be >>> mixed. The internal implementations are usually completely different. >>> This is not really news at all, certainly not to the ports people. :-) >> >> That said, it should still be possible to mix them in different >> libraries. The constraint from the wiki still applies: if you >> don't use STL types at library boundaries, then it should still >> work. If you do, then the libc++ and libstdc++ symbols will be >> mangled differently and so you will get link-time errors. >> >> In theory, if it links it should run... >> > > And in practice, it is broken. > > http://lists.freebsd.org/pipermail/freebsd-current/2013-November/046565.html > > QED Trying to migrate to 10, I would like to keep octave. Have you found anything new? Having build the port and all dependencies with standard options, octave is segfaulting for me, too. Anyhow, I can run octave with: env LD_PRELOAD=/usr/lib/libc++.so.1 octave Some very light testing indicates that it is working. Of course, this is not ideal. Maybe this gives a clue how to fix the octave port properly. Cheers, Jan Henrik
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