In windows if I use dllexport or DEF file I can compile a DLL and supply programmer a LIB and H file so he can use my DLL very easy.
In QT how can I do same thing? What I want is:
I develop a project, it can be compile to DLL in window, .so in Linux and I also got the LIB file.
I also need to export not only C function but also C++ class in this DLL.

What I should do?

Thanks a lot!