Not to mention, didn't someone find a linker that can link both COFF and
OMF
files on Windows and mostly works with dmd (IIRC, the debugging symbols
don't
currently work)? That sounds a lot more desirable than dealing with the
GNU
tools on Windows (which already have the whole COFF vs OMF problem).
Nobody knows how mature it really is, it isn't open source and you never
know
if the author will cease support/make it commercial whatever someday.
The object format has to be adapted for x64 anyway.
And I doubt something like OMF64 even exists.