On Tue, Sep 20, 2011 at 8:38 AM, Sean Poust <poust@berkeley.edu> wrote:
I keep getting this error: #warning "Using deprecated NumPy API, disable it by #defining NPY_NO_DEPRECATED_API" and a bunch of undefined variables when comping cython code with numpy
This is a warning introduced in current NumPy master. It's just a warning, so it's not the cause of the errors.
I am new to cython and numpy and I am having trouble getting a *.pyx extension to compile with this in the header:
from __future__ import division import numpy as np cimport numpy as np DTYPE = np.int ctypedef np.int_t DTYPE_t
I complie to C code using: cython -a montcarl.pyx
And it seems to work fine.
I then attempt to compile using:
gcc -I /Developer/SDKs/MacOSX10.6.sdk/System/Library/Frameworks/ Python.framework/Versions/2.6/include/python2.6 -I /usr/local/lib/ python2.7/site-packages/numpy/core/include -shared -pthread -fPIC - fwrapv -O2 -fno-strict-aliasing -o montcar.so montcarl.c
And I get a bunch of undefined variables:
spoust-m:old spoust$ gcc $CFLAGS -o montcar.so montcarl.c In file included from /usr/local/lib/python2.7/site-packages/numpy/ core/include/numpy/ndarraytypes.h:1965, from /usr/local/lib/python2.7/site-packages/numpy/ core/include/numpy/ndarrayobject.h:17, from /usr/local/lib/python2.7/site-packages/numpy/ core/include/numpy/arrayobject.h:14, from montcarl.c:225: /usr/local/lib/python2.7/site-packages/numpy/core/include/numpy/ npy_deprecated_api.h:11:2: warning: #warning "Using deprecated NumPy API, disable it by #defining NPY_NO_DEPRECATED_API" Undefined symbols: "_PyLong_AsLong", referenced from: ___Pyx_PyInt_AsLong in ccvkIDLQ.o ___Pyx_PyInt_AsLong in ccvkIDLQ.o ...
Any ideas on how to get this to compile and how to get rid of these numpy undefined variables? The cython guys directed me here.
PyLong_AsLong is a CPython API call: http://docs.python.org/c-api/long.html#PyLong_AsLong Looks like it's a problem linking with CPython, nothing to do with NumPy. I would recommend looking at the Python version numbers of all the parts in your build command line, I'm pretty sure that's where you will find your problem. ;) -Mark
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