Remove if unsupported: -L--no-warn-search-mismatch
On some older Linux systems the linker doesn't support -L--no-warn-search-mismatch, which is in dmd.conf by default and triggers a linker error. Fortunately, the switch is not strictly necessary (I've asked about it on the NG before, although I don't have a link handy.)
So it would be nice if DVM could detect such systems and remove the switch from dmd.conf when appropriate (probably while installing DVM).
It would be better, of course, if DMD could somehow handle this itself, but since DMD is often obtained in no-installer zip form (such as when using DVM), I'm not sure there's really an appropriate way for DMD to handle this on its own.