.hpp:249: error: invalid conversion from ‘bool (*)(const std::string&)’ to ‘void*’
.hpp:249: error:   initializing argument 2 of ‘boost::filesystem3::path::path(const Source&, typename boost::enable_if<boost::filesystem3::path_traits::is_pathable<typename boost::decay<T>::type>, void>::type*) [with Source = const char*]’
.hpp: In constructor ‘FileStream::FileStream(const char*, std::_Ios_Openmode)’:
.hpp:261: error: invalid conversion from ‘bool (*)(const std::string&)’ to ‘void*’
.hpp:261: error:   initializing argument 2 of ‘boost::filesystem3::path::path(c