'undefined symbol: PyArray_DescrFromType' when loading numpy extension

[piem]

Hi,

I'm trying to build aubio with pypy. the source builds fine, but when loading the module, i get an 'undefined symbol: PyArray_DescrFromType'. any idea what could be missing?

more info here: https://github.com/aubio/aubio/issues/17#issuecomment-213969499

thanks, Paul

[mattip]

I assume you are using pypy 5.1? There seems to be a regression, it has to do with a restructuring of the included headers. You may want to use 5.0.1 until we can fix it.

The issue can be tracked on https://bitbucket.org/pypy/pypy/issues/2282

[piem]

Hi @mattip,

Thanks for the feedback. I tried with 5.0.1, adding pypy's numpy/include to the headers, but I get the same error. Missing symbols include:

• PyArray_DescrFromType
• PyArray_MultiplyList
• PyArray_FromAny

all of which can be found in <numpy/__multiarray_api.h>.

[mattip]

What version of pypy/numpy are you using? In df821bc I reverted the broken part of 51920cf

[piem]

I use df821bc.

[mattip]

We will be releasing pyyp 5.1.1 to fix the missing header part of this issue. You still need to fix the ufunc problems in aubio, but this should allow you to move forward:

#! /bin/bash
set -e
set -x

wget http://buildbot.pypy.org/nightly/release-5.x/pypy-c-jit-83928-60dff1f57b81-linux64.tar.bz2
tar xf pypy-c-jit-83928-60dff1f57b81-linux64.tar.bz2

virtualenv -p pypy-c-jit-83928-60dff1f57b81-linux64/bin/pypy aubioforpypy
source aubioforpypy/bin/activate

pypy -m pip install --upgrade setuptools

git clone https://bitbucket.org/pypy/numpy.git
pushd numpy
pypy setup.py install
popd

pypy -c "import numpy" && echo "numpy successfully installed"

git clone --branch=develop https://github.com/aubio/aubio.git
pushd aubio
make getwaf
pypy waf configure build
pushd python
echo still need to fix missing ufunc problems
pypy setup.py install # complains about missing ufunc definitions
popd

export LD_LIBRARY_PATH=$PWD/aubio/build/src
pypy -c "import aubio" && echo "aubio successfully installed"

[piem]

great, thank you! after applying this patch, i could build and load aubio from pypy.

is there anything I should do to fix aubio's ufuncs, or should I wait for a future pypy/numpy version?

best, Paul

[mattip]

it is acutally missing support in pypy/module/cpyext/ndarrayobject.py, we seem to be missing a typedef We are working on an alternative implementation of all this stuff, so maybe by pypy 6 it will all Just Work(tm)