I see: Thomas Munro just missed this place in commit on 2024.12.04 
Use <stdint.h> and <inttypes.h> for c.h integers.
https://github.com/postgres/postgres/commit/962da900ac8f0927f1af2fd811ca67fa163c873a


Вт, 7 янв. 2025 г. в 01:29, Юрий Соколов <y.sokolov@postgrespro.ru>:
Hi.

I found meson fails to detect 64 GCC atomics. Looks like check was drafted but never synced with “configure”.

Patch that syncs meson check to configure’s one attached. It fixes the issue at least on my computer (Mac M1).

——

regards
Yura Sokolov aka funny-falcon