Check for build errors with out actually building?

[Adam D. Ruppe]

If you did

dmd -c -o- *.d

that'd be as close as you can get (I think). -c means compile 
only, don't link, and -o- means don't write the object file, so 
it will skip the final part of building.

and *.d of course is the files in your project. Compiling them 
all at once by putting them all on the command line generally 
works best and fastest with compiling D.