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yurivict

opened on Nov 27, 2021

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First it failed like this:

In file included from /usr/local/include/pybind11/pytypes.h:12:
/usr/local/include/pybind11/detail/common.h:186:10: fatal error: 'Python.h' file not found
#include <Python.h>
         ^~~~~~~~~~

then it failed like this:

In file included from /usr/local/include/xtensor-python/pytensor.hpp:22:
/usr/local/include/xtensor-python/pycontainer.hpp:30:10: fatal error: 'numpy/arrayobject.h' file not found
#include "numpy/arrayobject.h"
         ^~~~~~~~~~~~~~~~~~~~~

I had to add these arguments to fix these failures:

CXXFLAGS=-I${PYTHON_INCLUDEDIR} -I${PYTHON_SITELIBDIR}/numpy/core/include

It should find relevant headers by itself.

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1. SylvainCorlay commented on Nov 27, 2021

   

   SylvainCorlay

   on Nov 27, 2021

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   When things are not found, the right definition to add is PYTHON_EXECUTABLE. We have found that more aggressive search strategies often ended up finding other python installs and linking with the wrong version.
2. yurivict commented on Nov 27, 2021

   

   yurivict

   on Nov 27, 2021

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   cmake finds the python executable fine:

   -- Found PythonInterp: /usr/local/bin/python3.8 (found version "3.8.12") 
   -- Found PythonLibs: /usr/local/lib/libpython3.8.so
   

   It can't find the headers.
   Based on docs the same command that finds the python executable, FindPython, outputs the headers' location.
3. SylvainCorlay commented on Nov 27, 2021

   

   SylvainCorlay

   on Nov 27, 2021

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   Thanks. Is this happening on a distribution a patched cpython distribution? We rely on the same approach as pybind11 for this ...
4. yurivict commented on Nov 27, 2021

   

   yurivict

   on Nov 27, 2021

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   This is happening in the FreeBSD port.
5. SylvainCorlay commented on Nov 27, 2021

   

   SylvainCorlay

   on Nov 27, 2021

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   Okay. I don't know if the freebsd port patches cpython. We had some serious headaches in the past with Debian patching it to split between dist-packages and site-packages.
   In any case we should address the freebsd case.
6. tdegeus commented on Mar 2, 2023

   

   tdegeus

   on Mar 2, 2023

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   Not sure if this is the issue : https://conda-forge.org/docs/maintainer/knowledge_base.html ?

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