Apart from a few warnings (attached), and a bit of patience, the compiler terminates without error. On patience, OBSD has two processes who took almost half the CPU when compiling: reaper and zerothread. Will look into the warnings, and the testing errors (also attached). Let see how it works on this machine.

OpenBSD 6.7 (GENERIC.MP) #2: Thu Jun 4 09:55:08 MDT 2020

real mem = 17125511168 (16332MB)

avail mem = 16593879040 (15825MB)

bios0: Supermicro A2SDi-4C-HLN4F

OpenBSD clang version 8.0.1 (tags/RELEASE_801/final) (based on LLVM 8.0.1)

Target: amd64-unknown-openbsd6.7