On PPC Mac OS X 10.5.8, Leopard, configure checks 'whether C compiler accepts -fprofile-update=atomic' but should better check whether hardware supports this

[ballapete]

Bug report

Bug description:

The C compiler used, GCC 15.2.0, supports this feature, but now for each C file being compiled

warning: target does not support atomic profile update, single mode is selected

is reported. The hardware CPU used is a PowerPC 7447A – it does not seem to increment counters with atomic resolution…

Google recommends to use single or prefer-atomic as argument for -fprofile-update=…

CPython versions tested on:

3.14

Operating systems tested on:

Other