[PyKDE] How to add handwritten *.cpp files to a sip generated module with configure.py

Phil Thompson phil at riverbankcomputing.co.uk
Sat Jan 31 20:37:00 GMT 2004

On Saturday 31 January 2004 6:55 pm, Gerard Vermeulen wrote:
> Hi Phil,
> Ulrich Berning kindly provided me with code to build PyQwt with
> configure.py.
> One of his changes was to put a few handwritten *.cpp files to interface
> the Numerical Python extension modules (numpy and numarray) in the
> qwtmod.sip file.
> The problem is that there are conflicts between the header files of numpy
> and numarray (numarray should become the successor of numpy, so there is an
> overlap in their API). Putting all the interface code in the qwtmod.sip
> file leads to compile errors because of the inclusion of the conflicting
> headers in the same .cpp file.
> Ulli did not see it, because he is only having numpy, I guess.
> I can think of several solutions to add extra files to a sip module:
> (1) put those interface files in a static library that is to be linked to
>     the PyQwt extension module. I think it is a bit tedious and fear
>     that linking a static lib to the extension has a tiny chance of causing
>     problems.
> (2) add the extra sources to the .sbf file before it is being used by the
>     Makefile.__init__() function (this is what I did, but it is hackish)
> (3) Add an extra argument "extra_sbf = {}' to the Makefile.__init__()
>     function to pass something like:
>     extra_sbf = { 'sources' : 's1.cpp s2.cpp', 'moc_headers': 'm1.h m2.h' }
> I prefer (3) and am willing to send a patch. Or do you have another
> suggestion?

(3) sounds reasonable. The only other thing I'd suggest is putting the code 
in .sip files selected by a new %Feature. Something like...

%Feature numarray
%Feature numpy

%If (numarray)
	numarray specific code

%If (numpy)
	numpy specific code

...and then call sip with either -t numarry or -t numpy as appropriate.


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