[Dev-C++] How to force C linkage?

[Asko K. <ask...@sc...>]

My problems with C/C++ differences still continue:

- I have two almost identical libraries that I want to compile (with 
DevCpp 4.9.7.0). Lua40 (scripting language engine) compiles okay 
(objdump shows proper ANSI C function names), but (a newer version) 
Lua50 creates C++ mangled function names in the .o files.

How can I prevent this and what might be causing it?

I've tried "-xc" as compiler option (to force C language) - didn't 
work. I've lower-cap'd all the filenames so that they're not mistaken 
to be .C . The source itself should be plain ANSI C only, not C++.

Can it be some old temporary file lurking somewhere, from the time my 
files were .C ...?
Any other ideas?

-ak