Hi Alan,
(changed the subject to better reflect the content)
The problems I had before with building the Python bindings had to do with
MinGW and
the location of the Numpy package. The current problems are however of a very
different
nature.
I removed the #define NPY_NO_DEPRECATED_API ... line from plplotcmodule.i, even
though
this has been in there for a long time, and that helped a bit: the complaints
about PyArray_FLOAT
are gone.
The other error messages still exist, though. It concerns lines like:
tmpGrid2.xg[i] = (PLFLT *) ( PyArray_DATA( pltr_xg ) + i * size );
PyArray_DATA is a helper function of type "void *". Now that I look at it in
the morning with a fresh
cup of coffee, I think the problem is clear: pointer arithmetic on a "void *"
pointer. My hunch is that
this line should read:
tmpGrid2.xg[i] = ((PLFLT *) PyArray_DATA( pltr_xg ) + i * size );
Yes, a quick test shows that then the messages disappear.
This requires some further investigation.
The PyArray_FLOAT symbol occurs only in the function do_mapform_callback(), in
an #ifdef
block, controlled by PL_HAVE_PTHREAD.
As I am trying to build it on bare Windows, that macro is not defined and so I
get into the #else
branch. My question:
Is the #ifdef really required? One branch uses PyArray_SimpleNewFromData() and
the other
PyArray_FromDimsAndData(). Neither strikes me as very dependent on Pthread
capabilities,
but that is only judging from the name and the calls themselves. I have not
looked at the
documentation.
Regards,
Arjen
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