Cross compile cython with zig cc

Question

Is there a way to cross compile cython project with zig cc. According to this blog zig can cross compile. An example which cross compiles cython hello world would be great.

There is a possible starting point: https://stackoverflow.com/a/70474888/5769463 which uses using MinGW-w64 for cross compilation. Never used zig cc, so your millage may vary but the overall framework should be very similar. — ead, Jul 08 '22 at 04:32

score 1 · Answer 1 · answered Jul 11 '22 at 03:00

You'd need the python headers for the target.

Once you have them, you should be able to run:

# Compile .pyx to .c
cython helloworld.pyx
# Use zig to compile+link
zig build-lib -dynamic -target x86_64-windows \
   -I mingw-w64-x86_64-python/mingw64/include/python3.10/ \
   -lc \
   mingw-w64-x86_64-python/mingw64/bin/libpython3.10.dll \
   helloworld.c

score 0 · Answer 2 · answered Jul 10 '23 at 00:50

All I had to do was specify CC="zig cc" in the same line as my cythonize command with Cython==3.0.0b3. For example:

CC="zig cc" cythonize -i -3 --no-docstrings ./my_cython_module.pyx

This produced the .c and .so files.

Fwiw, I had installed Zig as sudo snap install --classic --beta zig.

Cross compile cython with zig cc

2 Answers2

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