Re: [Matplotlib-users] Cannot build matplotlib-0.63.4

[John H. <jdh...@ac...>]

>>>>> "Chris" == Chris  <rea...@po...> writes:

    Chris> Hi, I cannot build matplotlib-0.63.4 on gentoo linux. The
    Chris> error I get when running python setup.py build is:

    Chris> running build_ext building 'matplotlib._na_transforms'
    Chris> extension creating build/temp.linux-i686-2.3 creating
    Chris> build/temp.linux-i686-2.3/src creating
    Chris> build/temp.linux-i686-2.3/CXX gcc -fno-strict-aliasing
    Chris> -DNDEBUG -fPIC -Isrc -I. -I/usr/include/python2.3 -c
    Chris> CXX/IndirectPythonInterface.cxx -o
    Chris> build/temp.linux-i686-2.3/CXX/IndirectPythonInterface.o
    Chris> -DNUMARRAY=1 gcc -fno-strict-aliasing -DNDEBUG -fPIC -Isrc
    Chris> -I. -I/usr/include/python2.3 -c CXX/cxxsupport.cxx -o
    Chris> build/temp.linux-i686-2.3/CXX/cxxsupport.o -DNUMARRAY=1 In
    Chris> file included from CXX/cxxsupport.cxx:6: ./CXX/Objects.hxx:
    Chris> In constructor
    Chris> `Py::MapBase<T>::const_iterator::const_iterator(const
    Chris> Py::MapBase<T>*, Py::List,
    Chris> Py::SeqBase<Py::Object>::iterator)':
    Chris> ./CXX/Objects.hxx:2271: error: `s' undeclared (first use
    Chris> this function) ./CXX/Objects.hxx:2271: error: (Each
    Chris> undeclared identifier is reported only once for each
    Chris> function it appears in.)  error: command 'gcc' failed with
    Chris> exit status 1


    Chris> I have python 2.3.3, GCC 3.4.2, Numeric 23.3, numarray 1.0,
    Chris> pygtk-2.3.97 (I ungraded from pygtk-2.2.0 but that did not
    Chris> help), and wxpython-2.4.2.4

    Chris> I hope that is enough information - do I have the wrong
    Chris> versions - or am I missing something - I had no trouble
    Chris> building matplotlib-0.62.x

From a very quick read of the cxx code in that region, it looks like a
cxx bug.  I don't know why it is only exposed in gcc 3.4.2.  Try
replacing the function in line 2270 of CXX/Objects.hxx with

       const_iterator (const MapBase<T>* m, List k, List::iterator p )
           : map(m), keys(k), pos(p)
           {}

map(s) has been replaced by map(m).

The cxx code was not written by me, but this looks like a clear bug.

JDH