64-bit two-step compilation on Ubuntu?

[Sean Eskapp]

== Quote from Jonathan M Davis (jmdavisProg at gmx.com)'s article
> > I'm trying to get a D2 project to build on Ubuntu through Code::Blocks.
> > Unfortunately, Code::Blocks doesn't allow the simple one-step compilation
> > that is default with dmd, so it does compiling and linking in two separate
> > steps. Unfortunately, this is causing some linker errors, the main one
> > being:
> >
> > /usr/bin/ld: i386 architecture of input file `obj/Debug/main.o' is
> > incompatible with i386:x86-64 output
> >
> > I've tried passing -melf_x86_64 to the linker, and that doesn't change
> > anything. I'm also trying to pass -m64 to the compilation step, and it
> > doesn't work. Help?
> First thing I'd try would be to use dmd as the linker.
> dmd compiles in 32-bit by default. Assuming that you're using dmd 2.052, then
> you can use -m64 to tell it to compile for 64-bit, at which point linking with
> gcc should work. Otherwise, you'd need to pass -m32 to gcc when linking
> (unless you're using ld directly (at which point, I don't know what you do),
> and I'm not aware of anyone doing that - dmd doesn't). Regardless, if you're
> linking separately and not using dmd for the linking step, then you need to
> look at dmd.conf and make sure that you include the linker flags that it does,
> or your code may not work.
> In any case, my best suggestion if you can't compile and link in one step
> would be to just use dmd for both.
> - Jonathan M Davis

How do I use dmd as the linker separately from using it as the compiler?

As you can see in my original post, I'm passing -m64 to DMD, but it doesn't seem to be picking it up..