4.6.2 Using C++ DLLs

You must make the exported names match the FLI definitions. To do this:

• If you can alter the C++ code, wrap extern " C " {} around the C++ function definitions, or
• Create a second DLL with C functions that wrap around each C++ function, and make those C functions accessible as described in Using C DLLs.

Note: watch out for the calling convention of the exported function, which must match the :calling-convention in the FLI definitions.

LispWorks Foreign Language Interface User Guide and Reference Manual - 7 Dec 2011