I couldn't really get on with AmiDev (too buggy), I'm currently trying to setup Eclipse CDT with gcc (cross-compiler), looking good (so far).!
You can try CodeBlock on Linux / Windows.
It's really easy to set a toolchain with CodeBlock.
This is my solution on Windows:
1) install AmiDev ( just to have amiga cross compilers installed on Windows)
2) configure CodeBlock in order to use the amiga cross compilers provided by AmiDev
