dmd build instructions from source don't work anymore

[Daniel Murphy via Digitalmars-d]

"Timothee Cour via Digitalmars-d" <digitalmars-d at puremagic.com> wrote in 
message news:mailman.928.1431451389.4581.digitalmars-d at puremagic.com...

> > g++ -m64: No such file or directory

> Try setting it, it fails when I do.

I don't know what's going on.  It 'make's no sense.