#31891: Python loading system numpy in preference to MacPorts version (Lion) ------------------------------+--------------------------------------------- Reporter: jamie@… | Owner: macports-tickets@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 2.0.3 Keywords: | Port: ------------------------------+--------------------------------------------- Comment(by bardeau@…): I am experiencing the same problem for the software I am in charge (http://www.iram.fr/IRAMFR/GILDAS/). From what I can understand, it seems that the numpy/core/multiarray.so dynamic library provided by the MacPorts-numpy has been built with the numpy API version 4, while the include files it offers provide the API version 6. API (and ABI) versions can be found in numpy/core/include/numpy/_numpyconfig.h (NPY_API_VERSION and NPY_ABI_VERSION resp). When you import numpy.core.multiarray (explicitely, or implicitely when importing numpy) from the python interpreter, there is no problem since numpy/core/multiarray.so is self-consistent. But custom C-based Python-Numpy extensions are built with those lines in particular: #include "numpy/arrayobject.h" import_array(); At load time the function "import_array" checks if the 'NPY_FEATURE_VERSION' (from NPY_API_VERSION in _numpyconfig.h) is consistent with the one numpy/core/multiarray.so has been built with (see PyArray_GetNDArrayCFeatureVersion in numpy/core/code_generators/generate_numpy_api.py in numpy sources). The error message comes from here. I can also quote those few lines from doc/source/reference/c-api.array.rst: "ABI incompatibility is automatically detected in every numpy's version. API incompatibility detection was added in numpy 1.4.0. If you want to supported many different numpy versions with one extension binary, you have to build your extension with the lowest NPY_FEATURE_VERSION as possible." So at this stage I do not why the MacPorts-numpy is inconsistent. Is this intended? -- Ticket URL: <https://trac.macports.org/ticket/31891#comment:8> MacPorts <http://www.macports.org/> Ports system for Mac OS