Today Android Studio updated ndk from r11c to r12 beta and I got a lot of problems (I use gcc 4.9 toolchain):
error: 'mutex' in namespace 'std' does not name a type
error: field 'm_noreThreadFuture' has incomplete type 'std::future<int>'
error: 'thread' in namespace 'std' does not name a type
...
Do we have any solution to fix it ?