swig or ctypes , under the gun and need help
norseman
norseman at hughes.net
Tue Aug 26 13:43:04 EDT 2008
Diez B. Roggisch wrote:
> Sells, Fred schrieb:
>> Diez wrote...
>>> I don't know swig, but if all you have is a real C-API, try & use
>>> ctypes.
>>> It's much easier to create bindings for, keeps you fully in the warm and
>>> cozy womb of python programming and doesn't need no compilation to
>>> create
>>> the actual binding.
>>>
>> You're right the ctypes does seem more pythonesque; however I'm still
>> stuck trying return all these parameters
>> that the c api uses. my ctypes code is below. It just quits running
>> when I try to print one of the args I did a pass byref on, no error
>> out, nothing. admittedly I'm a newbie to ctypes and not much of a c
>> programmer
>> but I could sure use some help. my ctypes test code follows...
>>
>> from ctypes import *
>>
>> '''
>> create shared object file like so.
>> gcc -shared -o rug520.so rug520.c
>
> You need to create a proper library. The above doesn't do that - it
> creates as simple object file.
>
> I don't know how to really do that without using autoconf/automake.
>
> Diez
> --
> http://mail.python.org/mailman/listinfo/python-list
>
==
see info gcc
search shared (3.13 Options for Linking)
mkso.scr:
#!/bin/bash
# create a lib.so from param 1 filename
#
#vi $1
f=`basename $1 .c`
gcc -c -fPIC $f
ld -shared -fPIC $f.o -o $f.so
# end of file
I suppose $1 could be `cat *.c`
Haven't tried that, but.... Who knows?
(I write my libs to be libs.)
Steve
norseman at hughes.net
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