Message 297840 - Python tracker

> ./Include/pyatomic.h:37:5: error: 'atomic_int' does not name a type

I don't understand how you got this error. The line 37 of pyatomic.h is only compiled when you build Python itself. At least, since Python 3.5.1 and Python 3.6.0.

Did you try to build Python? Or did you try to build a C extension?