Date: Thu, 20 Apr 2017 10:52:54 -0600 From: Ian Lepore <ian@freebsd.org> To: Yuri <yuri@rawbw.com>, Freebsd hackers list <freebsd-hackers@FreeBSD.org> Subject: Re: How to get rid of the conflict between /usr/local/lib/gcc49/libgcc_s.so.1 and /lib/libgcc_s.so.1 Message-ID: <1492707174.56859.1.camel@freebsd.org> In-Reply-To: <2978fd74-4544-db57-f4f2-9300949e4764@rawbw.com> References: <2978fd74-4544-db57-f4f2-9300949e4764@rawbw.com>
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On Thu, 2017-04-20 at 09:35 -0700, Yuri wrote: > Currently, FreeBSD can't run software that includes both fortran and > clang-built parts that use exceptions. > > The immediate reason is that /usr/local/lib/gcc49/libgfortran.so.3 > requires a newer version of libgcc, > /usr/local/lib/gcc49/libgcc_s.so.1, > but the older version /lib/libgcc_s.so.1 is used by the rest of the > system. > > The immediate message is: ImportError: /lib/libgcc_s.so.1: version > GCC_4.6.0 required by /usr/local/lib/gcc49/libgfortran.so.3 not found > > libgcc update us impossible due to the licensing change, libgcc is > now GPL. > > > One or only thing that is used in libgcc is the low level Unwind > functionality. There are some alternative unwind implementations, > for > example https://github.com/pathscale/libunwind with the MIT license. > > Anybody has an idea how to solve this problem? > > > One example of failure is > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=217459, but most > science software is affected. > > A PR about this with lots more info and some potential fixes (or at least workarounds) is: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=208120 -- Ian
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