Looking at my makefile, sdcc behaves quite normally.

You can redirect the output if you want. And just use the error status.

.bat files are a real pain to catch every status.

Surely using make, or at least sh.exe is a lot more straightforward. IMHO warnings are just that. They should return 0.

If you do not like this behaviour you can always grep the o/p for warning strings, and stop that way.

I would guess that you do not really want to supply your client with sdcc compliant code. In which case, why not just tell them?

David.