How does kivy/pyobjus work on iOS?

[Noob Saibot]

I came across this question in stackoverflow on creating iOS apps in pure C code. Is it the case that kivy/pyobjus uses some .c scripts like the one in the question, embeds python into the C program, then calls kivy modules that way? Or is there more to it than that?

[Doug Linder]

https://github.com/kivy/kivy-ios/blob/master/tools/templates/main.m

In essence, yes.

The build is slightly more complicated in that it:

1) Compiles all the cython modules into static .a libraries.
2) Compiles all the .py files into .pyo object code
3) Links all the static libraries into one binary, and has a custom module loader to load symbols from the binary (see main.m).

It's slightly odd (and I don't understand why) but it *does* ship with a bunch of shared library files in lib/blah.so, but these seem to be 0kb placeholders to trick pythons module loader into working.

~
Doug.

[Doug]

(caveat; obviously main.m is objective-c not just plain c; but the majority of the rest of the code except for a few things like the bridge are in c
)

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