On Mon, 12 Jun 2023, Chris Pinnock via TUHS wrote:
I had thought that crt stood for “compiler runtime”.
You’ll find files
on a NetBSD (and other BSDs) in /usr/lib/csu called crt0, crtbegin,
crtend (etc) which are included in the compiled binaries at build time
and are used to include machine dependent things need to initialise
programs.
I always understood crt to stand for "C runtime".
-uso.