c++ - Exporting static lib symbols from DLL -

i'm using facade dll static lib. dll provides small interface , resource management shared across multiple dlls. dll-header expose stuff static library:

class dll_export mydllclass { public:    /// ...    onestaticlibclass * ptr; }; 

the problem is: if should works i've link staticlib dll , application using dll. didn't manage export parts of staticlib correctly. tried in export headers:

class dll_export onestaticlibclass; 

but doesn't work... still get:

undefined reference onestaticlibclass::~onestaticlibclass(void) undefined reference onestaticlibclass::operator<<(char const *) 

andy ideas how can export parts of static library dll?

thank you!

you need create .def file , pass linker. dllexport not necessary in case.

the reason way symbols resolved when using static library. when create dll, symbols needed dll searched, , object files containing these symbols copied dll. if dll code not reference destructor, not included.

a .def file tell linker functions exported. exported functions searched , pulled static library.

one downside of process need use mangled c++ names in .def file. mangled names can obtained dumpbin utility.