call C++ function from newlisp code

[csfreebird]

Is it possible to call a c++ function, I want to build a C++ so file which has some functions for accessing database, then write a newlisp app to use it. I am working on Ubuntu.

[Lutz]

In your C++ programs you have to declare functions as extern "C". Then they can be imported into newLISP using either the simple or extended import interface.



Windows DLL:

Code Select Expand

extern "C" __declspec( dllexport ) int MyFunc(int a, int b);
or on other OS:

Code Select Expand

extern "C" int MyFunc(int a, int b);

[csfreebird]

I made an example, see my blog

http://csfreebird.blogspot.com/2013/12/newlisp-accesses-mongodb-via-c-dynamic.html">http://csfreebird.blogspot.com/2013/12/ ... namic.html">http://csfreebird.blogspot.com/2013/12/newlisp-accesses-mongodb-via-c-dynamic.html



Thank you, Lutz.