If it says "Error: unable to find function address" then your library 
isn't compiled correctly, e.g., doesn't export the entry point 
correctly. Two things to check:

1) Do you export the symbol properly?
2) Do you use a C++ compiler? (this would mangle the name)

Cheers,
   - Andreas

bouchet vincent wrote:
> Hello,
> 
> I'm  squeak newbie and I want to use a C DLL with FFI on Linux (I use 
> the The Ubuntu Linux distribution).
> 
>     I have a function test which is written in a Linux C DLL. It works 
> when I call it from an exe.
> When I call it from my class I obtain the error message : "Error: unable 
> to find function address"
> 
> ---------------------------------------------------------------------
> TestClass>>testLinux
>     <cdecl: void 'test' (void) module: 'test.so'>
>     ^self externalCallFailed
> ---------------------------------------------------------------------
> 
> I use FFI with windows for an C Windows DLL and it works correctly,  so 
> is the FFI package works with Linux / Ubuntu ?
> 
> 
> thanks,
> 
> Vincent
> 
> 
> ------------------------------------------------------------------------
> 
>