On Wed, Apr 20, 2005 at 11:00:14AM +0200, M.-A. Lemburg wrote:
> Mihai Ibanescu wrote:
> >>>It looks like RedHat/Fedora patch their package to only put the platform
> >>>specific files in /lib64 (that's how I made my patch).
> >>>
> >>>Perhaps this isn't a good idea to do then :-( I wonder whether it would
> >>>be possible for distribution to set these values somewhere. Couldn't
> >>>python have a sys function to return its Makefile?
> >
> >
> > Fedora does it this way because of .noarch.rpm packages. Pure python
> > libraries should run just fine both on x86 and x86_64, and since it's
> > /usr/lib
> > on x86, x86_64 has to know about /usr/lib too (which is sort of confusing).
>
> Not only that, I doubt that this will work well unless
> you now have two site-packages dirs (one in /usr/lib for
> Python only extensions and one in /usr/lib64 for combined
> Python and binary extensions).
>
> > I believe you can get away without patching anything, if you do:
> >
> > from distutils import sysconfig
> > print sysconfig.get_python_lib()
> >
> > to which you either pass plat_specific = 0 or 1. This will properly parse
> > the
> > right Makefile (which is probably what you ended up doing).
>
> Uhm, this is the function that Jeremy was patching - the problem
> being that the "lib" part of the path is hard-coded into this
> function.
>
> It doesn't parse the Makefile, BTW, and plat_specific only
> adds site-packages to the returned directory - it doesn't
> have anything to do with platform specific code.
Indeed it doesn't parse the Makefile. I believe I was remembering something
else about Makefiles. Sorry.
This is what we have in Fedora:
if os.name == "posix":
if plat_specific or standard_lib:
lib = "lib64"
else:
lib = "lib"
libpython = os.path.join(prefix,
lib, "python" + get_python_version())
if standard_lib:
return libpython
else:
return os.path.join(libpython, "site-packages")
This is what stock python 2.4.1 does:
libpython = os.path.join(prefix,
"lib", "python" + get_python_version())
if standard_lib:
return libpython
else:
return os.path.join(libpython, "site-packages")
> The Makefile is the only place where Python itself can
> look up how it was configured. It's easy to find:
> distutils.sysconfig.get_makefile_filename();
> distutils.sysconfig.parse_makefile(filename) then does the
> rest. Or in one go: distutils.sysconfig.get_config_vars().
>
> The interesting parts of the Makefile are these variables:
>
> # Detailed destination directories
> BINLIBDEST= $(LIBDIR)/python$(VERSION)
> LIBDEST= $(SCRIPTDIR)/python$(VERSION)
> INCLUDEPY= $(INCLUDEDIR)/python$(VERSION)
> CONFINCLUDEPY= $(CONFINCLUDEDIR)/python$(VERSION)
> LIBP= $(LIBDIR)/python$(VERSION)
>
> I guess we should change the install.py to use these
> values instead of building its own little world of
> pathnames.
>
> What do you think ?
This makes a lot of sense. Anything that can prevent the ugly patches for
multilib.
Misa
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