On: Python 3 is killing Python

[im3w1l]

But a C99 program can link against a C89 library, right?

[rffn → im3w1l]

Maybe, maybe not.

Could be that the header file is not compatible with C99 either. This seems to me rather likely. Also it might be that the ABI changed in a way that the C89. This depends on platform and tool chain.

There is a large amount of code which is compatible. It is easy though to get an example which isn't.