On 05 May 2000, Harry Henry Gebel said:
I wasn't looking at --arch and CFLAGS to support cross-compiling, rather it is to support different versions of the same processor family. If I compile 'module-1.0-1.src.rpm' on an i386 or with '--target=i386' it will generate 'module-1.0-1.i386.rpm' but if I compile the same source RPM on a Pentium II or with '--target=i686' it will generate 'module-1.0-1.i686.rpm' even though it is really an i386 binary because ./setup.py does not pass any '--mcpu' or '--march' options to gcc. RPM sets a variable containing the appropriate '--mcpu' and '--march' (and other) options, but in does not appear that there is any way to use this variable in ./setup.py at this time.
Aahhh! I get it now, thanks. Anyways, I've just checked in a change that should enable this. It was already possible to sneak extra arguments into the link command line; now it can be done with the compile command line to boot. Start in the 'build_extensions()' method of distutils/command/build_ext.py; you'll note that it now looks for an 'extra_compile_args' element in the 'build_info' dictionary. FYI: 'build_info' is the dictionary of info that's included with each extension and contains all the information required to build the extension on "any" platform. For example, here's a snippet from the NumPy setup script: ext_modules = [('_numpy', { 'sources' : ['Src/_numpymodule.c', 'Src/arrayobject.c', 'Src/ufuncobject.c'], } ), If I want to sneak, say, "-m486", onto the compiler command line for each of the three source files in *this* extensions, I would change the build_info dict shown here to: { 'sources' : ['Src/_numpymodule.c', 'Src/arrayobject.c', 'Src/ufuncobject.c'], 'extra_compile_afgs' : ['-m486'] } Of course, you'll be invoking "build_ext" programmatically, rather than through the command line and setup script, so it'll be slightly different for you. This should give you the idea, though; just read through the 'build_extensions()' method and you should see what's going on. Greg -- Greg Ward - Unix geek gward@python.net http://starship.python.net/~gward/ Speak softly and carry a +6 two-handed sword.