Re: [boost] Shouldn't boost::filesystem be BOOST_POSIX on cygwin?

and that can obviously not work.

My question is therefore: shouldn't BOOST_POSIX be forced to be defined on cygwin?

I believe that should be the default, yes; I don't really want to make what is in effect a breaking change without Beman's permission though. However, you can work around the problem by defining BOOST_POSIX (on the command line or in boost/config/user.hpp) and rebuilding. John.