[MonoDevelop] Create 32 bit .so on 64bit PC

[Levi Bard]

> Sorry for being dense, but where do I put the -m32?  I tried putting it in
> Project Options, Build, Code Generation, Extra Compiler options inside the
> `pkg-config --cflags gstreamer-0.10` statement like `pkg-config --cflags
> gstreamer-0.10 -m32` but that generated compile errors.

That's the right place - just put it outside the backquotes around
your pkg-config calls.
Btw, if you're using gstreamer for your project, you'll also need
32bit versions of gstreamer (and its dependencies) against which to
link.