[Pyrex] successfully using gcc to generate extensions for windows

[Voidspace]

Success at last !

 >>> import primes
 >>> primes.primes(10)
[2, 3, 5, 7, 11, 13, 17, 19, 23, 29]

I renamed the "mymodules" to "primes" in setup.py
*and* used the following line fromt he command line :

D:\Python Projects\c>setup.py build_ext --compiler=mingw32
running build_ext
building 'primes' extension
writing build\temp.win32-2.3\Release\primes.def
F:\MinGW\bin\gcc.exe -mno-cygwin -shared -s 
build\temp.win32-2.3\Release\primes.
o build\temp.win32-2.3\Release\primes.def -LD:\Python23\libs 
-LD:\Python23\PCBui
ld -lpython23 -o build\lib.win32-2.3\primes.pyd

D:\Python Projects\c>

I tried the command line option first and it failed - but I noticed the 
presence of errors mentioning 'mymodules' -(which I assumed was just an 
output name for the module) - so I renamed.... and it succeeded. I'll 
try it again with disutils.

Hmm... just have - still get the Visual Studio 6 needed 
error.................
So it looks like disutils *isn't* picking up my disutils.cfg.........

Oh well..........

Thanks for your help guys.

I look forward to trying some more interesting stuff over the weekend.

Regards,


Fuzzy


Voidspace wrote:

>
>
> Phillip J. Eby wrote:
>
>> At 08:54 AM 4/16/04 +0100, Voidspace wrote:
>>
>>> In actual the reply from Greg might contain the answer to my further 
>>> difficulties :-)
>>>
>>> However - below are the resutls of my *failed* experiments last 
>>> night.............
>>>
>>> I thought I'd followed the instructions in :
>>> http://randomthoughts.vandorp.ca/syncato/WK/blog/758_Simple_instructions_to_compile_python_C_extensions_in_windows.item 
>>>
>>> to the letter !
>>> (Thanks for the replies by the way - both Phillip and Greg).
>>>
>>> Now the 'random thoughts' page says that after installing MinGW 
>>> successfully and adding a disutils.cfg file (which didn't exist 
>>> already).... I ought to be able to compile extensions from disutils 
>>> automagically.................
>>>
>>> However it seems that maybe :
>>>
>>>  python setup.py build_ext --compiler=mingw32
>>>
>>> is the right way instead.... (I'll try it when I get home)
>>
>>
>>
>> Where did you put the distutils.cfg?  It has to go in your 
>> Python2X\Lib\distutils directory.  Mine looks like this:
>>
>> [build]
>> compiler=mingw32
>>
>> If you have that in place, you should never need the --compiler 
>> flag.  In the two years I've had that file, I've never needed 
>> --compiler or -c.
>>
>> Second, did you actually build a 'libpython2x.a' file?  You didn't 
>> mention that.  If you didn't do that, you're not going to be able to 
>> actually build a .pyd.  See step 2 on this page:
>>
>> http://sebsauvage.net/python/mingw.html
>>
>>
>> (By the way, whenever I refer to "python2x" I mean e.g. python22 or 
>> python23, as appropriate for what version you're using.)
>>
>>
>>> F:\Python Projects\c>gcc -shared primes.o -o primes.so
>>
>>
>>
>> That won't work.  Windows uses '.pyd' files, not '.so' files.  And, 
>> you've got no -L here to specify where your libpython is at. 
>
>
> Can you tell me what the correct gcc incantion would be to generate a 
> .pyd I guestimated with the following result.:
>
> D:\Python Projects\c>gcc -shared primes.o -L 
> D:\Python23\libs\libpython23.a  -o
> primes.pyd
> primes.o(.text+0x5f):primes.c: undefined reference to 
> `_imp__PyArg_ParseTupleAnd
> Keywords'
> primes.o(.text+0x7c):primes.c: undefined reference to 
> `_imp___Py_NoneStruct'
> primes.o(.text+0x94):primes.c: undefined reference to `_imp__PyList_New'
> primes.o(.text+0x1f5):primes.c: undefined reference to 
> `_imp__PyObject_GetAttrSt
> ring'
> primes.o(.text+0x22f):primes.c: undefined reference to 
> `_imp__PyInt_FromLong'
> primes.o(.text+0x268):primes.c: undefined reference to 
> `_imp__PyTuple_New'
> primes.o(.text+0x2c4):primes.c: undefined reference to 
> `_imp__PyObject_CallObjec
> t'
> primes.o(.text+0x4e3):primes.c: undefined reference to 
> `_imp__Py_InitModule4'
> primes.o(.text+0x4fa):primes.c: undefined reference to 
> `_imp__PyImport_AddModule
> '
> primes.o(.text+0x51d):primes.c: undefined reference to 
> `_imp__PyObject_SetAttrSt
> ring'
> primes.o(.text+0x5a2):primes.c: undefined reference to 
> `_imp__PyString_FromStrin
> g'
> primes.o(.text+0x5c0):primes.c: undefined reference to 
> `_imp__PyString_FromStrin
> g'
> primes.o(.text+0x5e1):primes.c: undefined reference to 
> `_imp__PyModule_GetDict'
> primes.o(.text+0x5fe):primes.c: undefined reference to 
> `_imp__PyTuple_New'
> primes.o(.text+0x61e):primes.c: undefined reference to 
> `_imp__PyString_FromStrin
> g'
> primes.o(.text+0x662):primes.c: undefined reference to `_imp__PyCode_New'
> primes.o(.text+0x682):primes.c: undefined reference to 
> `_imp__PyThreadState_Get'
>
> primes.o(.text+0x68d):primes.c: undefined reference to 
> `_imp__PyFrame_New'
> primes.o(.text+0x6b4):primes.c: undefined reference to 
> `_imp__PyTraceBack_Here'
>
> D:\Python Projects\c>
>
>
>
>
>
>
>>
>>
>>
>>
>>
>>
>

-- 

http://www.Voidspace.org.uk 
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