➜  minetest-official git:(master) make -j2
[  0%] Built target jsoncpp
-- *** Detected git version 0.4.9-121-gd5a6950 ***
[  0%] Built target GenerateVersion
[  0%] Building CXX object src/CMakeFiles/minetestserver.dir/jthread/pthread/jsemaphore.cpp.o
[  0%] Building CXX object src/CMakeFiles/minetest.dir/jthread/pthread/jsemaphore.cpp.o
/Users/adrian/Github/minetest-official/src/jthread/pthread/jsemaphore.cpp:70:24: error:
      use of undeclared identifier 'sem_timedwait'
/Users/adrian/Github/minetest-official/src/jthread/pthread/jsemaphore.cpp:70:24: error:
      use of undeclared identifier 'sem_timedwait'
        int sem_wait_retval = sem_timedwait(&m_semaphore,&waittime);
                              ^
        int sem_wait_retval = sem_timedwait(&m_semaphore,&waittime);
                              ^
11 error error generated.
 generated.
make[2]: make[2]: *** [src/CMakeFiles/minetestserver.dir/jthread/pthread/jsemaphore.cpp.o] Error 1*** [src/CMakeFiles/minetest.dir/jthread/pthread/jsemaphore.cpp.o] Error 1

make[1]: *** [src/CMakeFiles/minetestserver.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
make[1]: *** [src/CMakeFiles/minetest.dir/all] Error 2
make: *** [all] Error 2
➜  minetest-official git:(master)