>>>>> "MS" =3D=3D Martin Sj=F6gren <martin@strakt.com> writes:
>> But this is wrong: it's not foo1.c that depends on bar.h, it's
>> foo1.o.
MS> You're right.
On the other hand, distutils setup scripts don't talk about .o files
directly. They talk about the .c file and assume there is a
one-to-one correspondence between .c files and .o files.
>> With the latest CVS, on Unix or Linux, try this:
>>
>> - Run Make to be sure you are up to date
>> - Touch Modules/socketobject.h
>> - Run Make again
>>
>> The latest setup.py has directives that tell it that the _socket
>> and _ssl modules depend on socketmodule.h, and this makes it
>> rebuild the necessary .o and .so files (through the changes to
>> distutils that Jeremy made).
MS> Cool. But my module consists of several .c files, how do I
MS> specify which .o files depend on which .h files?
I did something simpler, as Guido mentioned. I added global
dependencies for an extension. This has been fine for all the
extensions that I commonly build because they have only one or several
source files. Recompiling a few .c files costs little.
I agree that it would be nice to have fine-grained dependency
tracking, but that costs more in the implementation and to use.
Thomas Heller has a patch on SF (don't recall the number) that handles
per-file dependencies. I didn't care for the way the dependencies are
spelled in the setup script, but something like the dict that Martin
(the other Martin, right?) suggested seems workable.
MS> Now, it's a shame I have to maintain compatability with the
MS> Python 2.1 and Python 2.2 distributions in my setup.py ;)
MS> I suppose I could try/except...
We should come up with a good hack to use in setup scripts. This is
my first try. It's got too many lines, but it works.
# A hack to determine if Extension objects support the depends keyword =
arg.
if not "depends" in Extension.__init__.func_code.co_varnames:
# If it doesn't, create a local replacement that removes depends
# from the kwargs before calling the regular constructor.
_Extension =3D Extension
class Extension(_Extension):
def __init__(self, name, sources, **kwargs):
if "depends" in kwargs:
del kwargs["depends"]
_Extension.__init__(self, name, sources, **kwargs)
Jeremy
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