[Pyrex] newbie problem with wrapping c++ code

[Greg Ewing]

Hoyt Koepke wrote:
> ccode/test.h is just:
> 
> ++++++++++++++++++++++++++++
> void hello_world();
> ++++++++++++++++++++++++++++

Pyrex currently only wraps C++ functions that use C calling
conventions.

You need

   extern "C" void hello_world();

otherwise the name gets mangled and doesn't match the
plain C name "hello_world" that the Pyrex-generated code
is using.

--
Greg