At the moment the users of the library should explicitly specify the used library name in linker command line. Here might be problems if the user's project was compiled with config.h for some configuration (let's say 12d) but linked with library for another configuration (i.e. libstd12s.lib).
The MSVC and ICC/Windows has the posibility to specify the library using #pragma comment (lib, libname) directive. So #including any header from the library will leads to linking automatically with the proper library file.