Re: [Plplot-devel] Problem builiding the Python bindings on Windows using MS VC/C++

[Alan W. I. <ir...@be...>]

On 2013-10-18 07:07-0000 Arjen Markus wrote:

> [...]As I am trying to build it on bare Windows, that macro is not defined and so I get into the #else
> branch. [...]

Sorry, Arjen.  I missed before that you were doing a build with bare
Windows. I assume in the rest of this that means you having been using
Microsoft's MSVC compiler for the issues you have recently been
reporting?

If so, my advice would be to suspend that work, and first confirm
python on MinGW/MSYS works for you (like it should because of my
Python success with that combination).  And that would immediately
give the result I am looking for which is does 32-bit python
for MinGW/MSYS always give iffy numerical accuracy for Windows
regardless of whether it is the Wine version or Microsoft
version of that?

Of course, after that MinGW/MSYS python success, you could go back to
investigating the MSVC case further. But the point is that MinGW
success for you would remove all doubt that your Python/NumPy
installation was suitable for PLplot builds and provides a
much better comparison for my Python results on Wine.

> 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.

You will probably want to restore

#define NPY_NO_DEPRECATED_API    NPY_1_7_API_VERSION

later once you figure everything out for the MSVC case. See
http://docs.scipy.org/doc/numpy-dev/reference/c-api.deprecations.html
for why we will want that #define in place.

Since this #define causes no issues for me on MinGW/MSYS (and
shouldn't for you as well when you try MinGW/MSYS) I expect in
your current MSVC case you are actually compiling slightly different code (due
to conditional compilation) and thus running into some old deprecated ways of
using numpy that have not been exercised by any of our MinGW/MSYS
tests.

Alan
__________________________
Alan W. Irwin

Astronomical research affiliation with Department of Physics and Astronomy,
University of Victoria (astrowww.phys.uvic.ca).

Programming affiliations with the FreeEOS equation-of-state
implementation for stellar interiors (freeeos.sf.net); the Time
Ephemerides project (timeephem.sf.net); PLplot scientific plotting
software package (plplot.sf.net); the libLASi project
(unifont.org/lasi); the Loads of Linux Links project (loll.sf.net);
and the Linux Brochure Project (lbproject.sf.net).
__________________________

Linux-powered Science
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