Linux heracles.o2switch.net 4.18.0-553.62.1.lve.el8.x86_64 #1 SMP Mon Jul 21 17:50:35 UTC 2025 x86_64

//usr/include/event2/event-config.h

 #include <bits/wordsize.h>

#if __WORDSIZE == 32
#include <event2/event-config-32.h>
#elif __WORDSIZE == 64
#include <event2/event-config-64.h>
#else
#error "Unknown word size"
#endif