[SciPy-User] problems building scipy on Yosemite.

[David Cournapeau]

On Tue, Nov 18, 2014 at 11:44 AM, David Cournapeau <cournape at gmail.com>
wrote:

>
>
> On Tue, Nov 11, 2014 at 7:29 AM, Andrew Nelson <andyfaff at gmail.com> wrote:
>
>> Dear list,
>> I've updated to Yosemite (clean install) and am having problems building
>> scipy from source (python setup.py build)
>>
>> The complete build log is at:
>> https://gist.github.com/andyfaff/5a433d0585e8dae1dfc2
>>
>> $gfortran --version
>> GNU Fortran (GCC) 4.2.3
>> $gcc --version
>> Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr
>> --with-gxx-include-dir=/usr/include/c++/4.2.1
>> Apple LLVM version 6.0 (clang-600.0.54) (based on LLVM 3.5svn)
>> Target: x86_64-apple-darwin14.0.0
>> Thread model: posix
>> $echo FFLAGS
>> -ff2c
>>
>>
> I can reproduce the issue on 10.6, where I used to be able to build
> numpy/scipy before with the exact same configuration (10.6, gfortran from
> ATT, official gcc-4.2 compilers from Apple).
>
> I reduced the issue to be related to 32 bits only, and when built against
> numpy 1.9.1. I don't have the issue when building scipy against 1.8.1.
>
> This suggests some incompatibilities in compilation options that have
> changed in numpy between 1.8.1 and 1.9.1.
>

Indeed, the problem is the added '-g' flag between 1.8.1 and 1.9.1. That
flag is invalid for gcc 4.2.x on darwin, we should instead use -gdwarf-2:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=34719

David
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