port to PDOS (especially mainframe)

[Christian Heimes]

On 23/03/2021 22.22, Paul Edwards wrote:
> "long long" is not C90. I don't have support for that. The
> "i370" target of GCC 3.2.3 doesn't have DI instructions
> working. Just 32 bits. Everything is 32 bits.

Which version of Python are you using as baseline? CPython requires C99
since 3.6,
https://docs.python.org/3/whatsnew/3.6.html#build-and-c-api-changes

Christian