Currently I have /W4 for msvc, and /Wall /Wextra -pedantic for gcc listed on the wiki page.
I thought the serialization library was "clean" until someone complained that there were warnings at level 4. When I investigated, I found that the major complaint was that that I had "const" members so the compiler couldn't generate copy/assigment functions. It turns out that these classes used the boost::noncopyable facility. So to eliminate these warnings this facility needs to be re-implemented in a different way. It sort of an illustration how an idea with the the best of intentions leads to seems to lead to a host of unanticipated consequences. (Hmmm reminds me of current political events - maybe I watch to much TV).
Bottom line, I'm stuck in a box.
Sigh... I forgot about that one: it's hit me before as well :-( It seems that any implementation of non_copyable will inevitably generate this warning with msvc - unless we rewrote it as a helper macro that you use at class scope to define those private members - but that's hardly much help either as it sort of defeats the whole "self documenting" purpose of non_copyable. So I think the only solution is to use #pragma's in that case: in case you're not familiar with them the usual incantation is: #ifdef BOOST_MSVC #pragma warning(push) #pragma warning(disable: number-list) #endif // Code goes here #ifdef BOOST_MSVC #pragma warning(pop) #endif Where "number-list" is a whitespace separated list of all the warnings to suppress. HTH, John.