[fpc-pascal] Linking FPC code to a C program

[vtech at volny.cz]

Hi,

is it possible to link FPC compiled units to a C program on Linux? 
I'm not able to figure it out.
FPC uses some strange way to name symbols and whatever I try, I always
end up with the linking errors.
I'm probably doing some trivial error, but I just can't find it.

Simple function:

function aplusb(a,b:longint):longint;cdecl;

gets exported as something like: 

text.n_testunit_aplusb$longint$longint$$longint

Any help appreciated. (And I need the same on Windows later, I just didn't
get there yet).

VK