[boost] [sync] Included file not found

When I build boost libraries from the top with the latest modular-boost master with MingW/gcc-4.8.1 on Window I get thi error in sync: In file included from libs\sync\src\tss_windows_pe.cpp:9:0: ./boost/sync/detail/config.hpp:32:42: fatal error: boost/detail/winapi/config.hp p: No such file or directory #include ^ I do not see this file anywhere. What is the issue and can this be corrected ?