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TROUBLESHOOTING.rst

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TROUBLESHOOTING

  1. On some Linux machines, compilation of METIS results in the error:

    .../nlpy/cache/metis/metis-4.0/Lib/proto.h:462:
error: conflicting types for ‘__log2’
/usr/include/bits/mathcalls.h:145: note: previous declaration of ‘__log2’ was here
In file included from .../nlpy/cache/metis/metis-4.0/Lib/metis.h:36,
                 from .../nlpy/cache/metis/metis-4.0/Lib/mutil.c:14:
.../nlpy/cache/metis/metis-4.0/Lib/proto.h:458:
warning: function declaration isn’t a prototype
.../nlpy/cache/metis/metis-4.0/Lib/proto.h:462:
error: conflicting types for ‘__log2’
/usr/include/bits/mathcalls.h:145: note: previous declaration of ‘__log2’ was here

    The solution is to apply the patch located in nlpy/extras/metis-4.0.patch to the METIS source tree. Change to the location of METIS (which may be in the cache directory if you elected to have NLPy download and build METIS for you) and type:

    patch -p1 < path/to/nlpy/extras/metis-4.0.patch

    Then rebuild:

    cd /path/to/nlpy
rm -rf build
python setup.py <options> build