OSX 64-bit

• export CFLAGS="-arch x86_64"

• building python

  For some pointers on how to get python to build in 64 bit mode see
  
  http://mail.python.org/pipermail/pythonmac-sig/2007-June/019045.html
  
  To quote (which is actually about 64 bit on *Tiger*):
  
  <quote>
  The build is universal, but for me only one of the two archictures
  actually worked: I did my build on an Intel system and the 64-bit
  build worked on that machine, but didn't work on a G5 mac. That's
  probably something shallow, but as that machine doesn't have the
  Xcode installed and is on the other side of a slow network connection
  I haven't tried to debug this yet.
  
  1) Edit the configure script, look for "-arch i386" and "-arch ppc"
  and change that those to  "-arch ppc64" and "-arch x86_64". You'll
  have to make multiple changes to the configure file.
  
  2) Build using:
  
         $ mkdir build
         $ cd build
         $ CFLAGS="-arch ppc64 -arch x86_64" ../configure \
             --enable-universalsdk \
             --disable-toolbox-glue --prefix=/opt/python25-64bit
         $ make
         $ make install
  
  3) Optionally: run "make testall" to run the unittests and check
  pyconfig.h to check the various SIZEOF definitions.
  
  You now have a 64-bit build of python in /opt/python25-64bit.

• Cython {{{ 20:58 < mabshoff> There is also a bug in the way Cython builds its extensions.

20:58 < mabshoff> It needs to use the flags python was build with, not some random stuff people thing 20:58 < mabshoff> think is good. 20:58 < mabshoff> I told Robert about it.

But:

[06:36] <mabshoff> But it doesn't match the python flags. I checked on it once. [06:37] <was_> It's distutils. [06:37] <was_> Cython doesn't have anything to do with the flags. }}}