[PyQt] Platforms directive or tags, or both?

Jens Thoms Toerring jt at toerring.de
Thu Oct 18 22:16:37 BST 2012

Hi Larry,

On Thu, Oct 18, 2012 at 02:45:30PM -0600, Larry Shaffer wrote:
> Interesting approach. Thank you for sharing. Since the QGIS project
> has a minimum requirement of Python 2.3 (2.5+ recommended), I think
> maybe the Python ctypes package could be leveraged instead of
> generating a cpp test program. I will have to ask the other QGIS devs,
> with more knowledge in this area, if that approach is better than the
> current platform-sniffing, hard-coded way.
> On my Mac (Py 2.7.1), I did this:
> import ctypes
> ctypes.c_size_t == ctypes.c_ulong
> # returns True
> ctypes.c_size_t == ctypes.c_uint
> # returns False
> So it looks like a variation on your script will work, since Python is
> already used as part of the CMake finds before generating the sip
> files for the bindings. CMake (or Python) can then be used to generate
> the sip file from the returned typedef string. Thanks again.

That looks like a brilliant idea since it avoids all the
potential problems with getting the test program to com-
pile! I never had a closer look at what can be done with
ctypes, so I missed that one. Do you mind if I steal that
idea of yours for my own project?

                          Best regards, Jens
  \   Jens Thoms Toerring  ________      jt at toerring.de
   \_______________________________      http://toerring.de

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