''And why do you say it's incorrect to state that there is nothing to be done, if there is no source file included in your project, that can be compiled ?'' How is then that header-only libraries exist? I've seen one before.
Harhar... Sorry, but you are really missing the basics here. So what do you want to do out of this library and the header files in the project? Another library? How shall this work?
Something needs to make use of the library. Thats how
all SDK's work, btw: They provide an interface (declared in the header files) and the already compiled implementation (the library). So if you want to use it you
need to create at least a "main" for another library which
requires source code (files). If you don't provide more source code, C::B is
completely right:
Nothing to be done.