Import all symbols from static library ?

I have tried, many times, to use dynamic linking + pthreads, it just has a lot of issues atm, so I decided to build my dynamic library as a static library and then statically link it with my main project (faux dynamic linking).

it kind of worked, the only issue is that not everything from the "faux dynamic" library is being linked into the main project.

is there anyway I can specify which class from the "faux dynamic" library to be linked into the main project ?