My app links to a third party static library which without source code and I find that a function implemented in this library is exported in my exe using dumpbin.exe, just like a export function in a DLL. I have tried to modify the header file provided by the library, got rid of all the __declspec(dllexport) stuffs, and relink my app, but the function is still exported. Does it have a way to make it unexported?