#12315: OS X Lion: pari fails self tests
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Reporter: jhpalmieri | Owner: tbd
Type: defect | Status: new
Priority: major | Milestone: sage-5.0
Component: packages | Keywords: pari darwin lion osx
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by kcrisman):
An exchange on #11881 about this.
> > I am currently at the PARI atelier and we're discussing OS X Lion.
Essentially the PARI developers are saying that Apple's compiler is
completely broken and that the Only Right Solution is to install a real
compiler, i.e. gcc.
> > So maybe the best solution in practice for Sage is to add a check in
prereq that users aren't using Apple's broken compiler.
> ? So that no one using "just Xcode" can build Sage? I'm a little
unclear on what would have to change for ordinary users.
> > Also we should have one server machine running Lion with a good
compiler to build binaries.
> Certainly.
> jhpalmieri points out on #12315 (where these comments should probably
live anyway)
> > was pointed out on sage-devel that with SAGE_DEBUG=True, self-tests
pass. So it may be a compiler error; compiling with -O0 seems to work. It
may be just a single file (the one containing the bezout function) causing
the problems.
> So perhaps a workaround would be to check for the "bad" compiler in the
spkg-install somehow and then do no optimization if that's the case.
Power users who need Pari optimized would be expected to have the
technical know-how to use the right one, and as you say the binary builder
could have this as well.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12315#comment:2>
Sage <http://www.sagemath.org>
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