8000 FIX: Remove deprecated Numpy C API macros by scott-huberty · Pull Request #589 · nipy/nipy · GitHub
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FIX: Remove deprecated Numpy C API macros #589

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FIX: Remove deprecated Numpy C API macros #589

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@scott-huberty scott-huberty commented Jun 24, 2025 •
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If I understand correctly, NPY_OWNDATA and NPY_BEHAVED were deprecated in v1.7 (which was released over a decade ago), in favor of NPY_ARRAY_OWNDATA and NPY_ARRAY_BEHAVED (ref ). These macros were officially removed in Numpy v2.3.

When installing locally I was hitting this error, and as far as I can tell, your CI's will hit these too:

      ../../lib/fff_python_wrapper/fffpy.c:44:29: error: use of undeclared identifier 'NPY_BEHAVED'
                                                        (void*)x, itemsize, NPY_BEHAVED, NULL);
                                                                            ^
      ../../lib/fff_python_wrapper/fffpy.c:143:29: error: use of undeclared identifier 'NPY_OWNDATA'
          x->flags = (x->flags) | NPY_OWNDATA;
                                  ^
      ../../lib/fff_python_wrapper/fffpy.c:169:27: error: use of undeclared identifier 'NPY_OWNDATA'
        x->flags = (x->flags) | NPY_OWNDATA;
                                ^
      ../../lib/fff_python_wrapper/fffpy.c:247:29: error: use of undeclared identifier 'NPY_OWNDATA'
          x->flags = (x->flags) | NPY_OWNDATA;
                                  ^
      ../../lib/fff_python_wrapper/fffpy.c:281:27: error: use of undeclared identifier 'NPY_OWNDATA'
        x->flags = (x->flags) | NPY_OWNDATA;
                                ^
      ../../lib/fff_python_wrapper/fffpy.c:470:27: error: use of undeclared identifier 'NPY_OWNDATA'
        x->flags = (x->flags) | NPY_OWNDATA;

@scott-huberty
FIX: Remove deprecated Numpy C API macros
76f2aae 
If I understand correctly, NPY_OWNDATA and NPY_BEHAVED were deprecated in v1.7, which was released over a decade ago. These macros were officially removed in Numpy v2.3 (released June 2025).

- https://github.com/numpy/numpy/releases/tag/v2.3.0
- https://numpy.org/devdocs/release/1.7.0-notes.html
- https://github.com/numpy/numpy/blob/v1.12.0b1/numpy/core/include/numpy/npy_1_7_deprecated_api.h
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