TL;DR ... it's not that long!

X86VMS$ cc /version
VSI C X7.4-726 (GEM 50X23) on OpenVMS x86_64 V9.2

Builds (and executes) like a charm (so far).

See attached.

There are some build efficiencies (in size) compared to the cross-compiler.

Directory WASD_ROOT:[x86_64]

HTTPD_SSL.EXE;2       4.09MB  15-FEB-2023 05:04:59.24
HTTPD_SSL.EXE;1       5.97MB   8-JAN-2023 11:23:14.54

The modes bounce around a bit (as might be expected) but this looks (sorta)
typical.  See attached.

First big milestone (as far as the [C] developer community goes).