I need to compile a 32-bit distribution of PyEphem. It does not seem like this should be difficult, however, I'm running into some compiler issues.
$ CFLAGS=-m32 python setup.py bdist -p i386
running bdist
running bdist_dumb
running build
running build_py
running build_ext
building 'ephem._libastro' extension
gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -m32 -fPIC -Ilibastro-3.7.3 -I/usr/include/python2.6 -c extensions/_libastro.c -o build/temp.linux-x86_64-2.6/extensions/_libastro.o
In file included from /usr/include/python2.6/Python.h:58,
from extensions/_libastro.c:3:
/usr/include/python2.6/pyport.h:685:2: error: #error "LONG_BIT definition appears wrong for platform (bad gcc/glibc config?)."
error: command 'gcc' failed with exit status 1
The build system is running Ubuntu 10.04. Are the python header files tied to the architecture of the local hosts?
Update: I found some interesting info about Python cross-compiling.