druntime build failing because of masm386 problems

[Jonathan M Davis via Digitalmars-d-learn]

It's been a while since I did anything in Windows with D, and unfortunately,
I need to again, and now I can't get druntime to build. I'm getting this
lovely error:

dmc -c  src\rt\minit.asm
masm386 -DM_I386=1 -D_WIN32 -Mx src\rt\minit.asm;

Can't run 'masm386', check PATH
Error: 'dmc' not found


I know that I've seen this before, but I can't remember how to fix the
problem. dmc is definitely on my PATH (I successfully built dmd prior to
trying to build druntime), so the error seems to be wrong, for whatever good
that does me. I don't see a masm386 with dmc, so I don't know where that
comes from. Maybe that's part of the problem.

Has anyone seen this problem and figured out how to get around it or fix it?

- Jonathan M Davis