I've only compiled them in gcc, but as stormc is using a slightly altered version of that for it's compiler - try grabbing one of my amirc plugins from aminet (the source archives obviously) and seeing if you can get that to compile ok - they have all needed non-system includes, and use SDI_compiler.h etc.
The order of files for compiling (and linking) is libinit.c then xxx.c, with no start code. If it works, just rip out whatever you need... ;-)
Robin
ps. to find them just search for "amirc plugin" on aminet...