[boost] boost lib must provide C interface?!

Hi, can a boost C++ library be required/forced to provide a C API? Even if the library author doesn't like this idea - because he would be responsible for C stuff. <boost/config.hpp> include <cstddef> which will not be available for a C compiler - maybe this is an indication that boost libs are not required to implement a C-API. regards, Oliver -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de