[Buildroot] Python standard library problems

Hi,

On 12/08/2011 19:47, Pedro Sanchez wrote:

Thanks Maxime for looking at this. Indeed, my workstation is running
Linux 64 bits. I'm glad to know that cross-compiling Python goes well on
a 32-bit OS. I'll have to fire up a VM just to run BR :-|

Or maybe we can just fix this bug :)

On the specific problem we have, I don't have any insight yet. All I can
tell you is that I did the exercise of building BR w/Python using three
different toolchains (CodeSourcery, Crosstool-ng, and uClibC) and I got
exactly the same disappointing results**.

Neither am I. I don't get why a cross-toolchain which runs fine could
fail to build a specific module. After all, on 32 and 64 bits, we use
the exact same toolchains (at least for the Code Sourcery one.).

After all, the host-python should be compiled for 64 bits using the
native toolchain, and the target one compiled (in our case at least) for
32 bits, with the cross-toolchain. There shouldn't be any 64-to-32 bits
compilation at all.

Maybe this can help?

http://blog.devork.be/2009/02/compiling-32-bit-python-on-amd64.html

Yep, I ran into that trick last week too. I'm not sure this is a good
one though. This is a good quick fix, but I wonder what will happen if
your target is a 64bits architecture ? Moreover, this adds the
dependency to gcc-multilib.

Peter, what do you think of it ?

Maxime

-- 
Maxime Ripard, Free Electrons
Kernel, drivers, real-time and embedded Linux
development, consulting, training and support.
http://free-electrons.com