[Bug 302649] [NEW] scipy.weave.inline compilation fails with gcc 4.3

[Sameer Morar]

Public bug reported:

Binary package hint: python-scipy

The compiler fails with the following error:

<weave: compiling>
In file included from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/applics.h:400,
                 from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/vecexpr.h:32,
                 from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/vecpick.cc:16,
                 from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/vecpick.h:293,
                 from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/vector.h:449,
                 from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/tinyvec.h:430,
                 from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/array-impl.h:44,
                 from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/array.h:32,
                 from /home/smorar/.python25_compiled/sc_b1d4a37f384bb7ae593fe0b86178e5990.cpp:11:
/usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/mathfunc.h: In static member function ‘static long int blitz::_bz_abs<long int>::apply(long int)’:
/usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/mathfunc.h:45: error: ‘labs’ is not a member of ‘std’
In file included from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/array/funcs.h:29,
                 from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/array/newet.h:29,
                 from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/array/et.h:27,
                 from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/array-impl.h:2515,
                 from /usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/array.h:32,
                 from /home/smorar/.python25_compiled/sc_b1d4a37f384bb7ae593fe0b86178e5990.cpp:11:
/usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/funcs.h: In static member function ‘static int blitz::Fn_abs<int>::apply(int)’:
/usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/funcs.h:509: error: call of overloaded ‘abs(int&)’ is ambiguous
/usr/include/c++/4.3/cmath:99: note: candidates are: double std::abs(double)
/usr/include/c++/4.3/cmath:103: note:                 float std::abs(float)
/usr/include/c++/4.3/cmath:107: note:                 long double std::abs(long double)
/usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/funcs.h: In static member function ‘static long int blitz::Fn_abs<long int>::apply(long int)’:
/usr/lib/python2.5/site-packages/scipy/weave/blitz/blitz/funcs.h:530: error: ‘labs’ is not a member of ‘std’

This problem can be worked around by changing /usr/bin/g++ from g++-4.3
to point to g++-4.2

** Affects: python-scipy (Ubuntu)
     Importance: Undecided
         Status: New

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scipy.weave.inline compilation fails with gcc 4.3
https://bugs.launchpad.net/bugs/302649
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