如图，请问该怎么解决？
-------------- Build: Debug in xjgame (compiler: GNU GCC Compiler)---------------
||=== Build: Debug in xjgame (compiler: GNU GCC Compiler) ===|
/usr/bin/ld: obj/Debug/game/mod_rpt/GameRptModule.o||undefined reference to symbol 'pthread_create@@GLIBC_2.2.5'|
||error: ld returned 1 exit status|
||=== Build failed: 2 error(s), 0 warning(s) (0 minute(s), 1 second(s)) ===|
/usr/bin/ld: obj/Debug/game/mod_rpt/GameRptModule.o: undefined reference to symbol 'pthread_create@@GLIBC_2.2.5'
//lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
Process terminated with status 1 (0 minute(s), 1 second(s))
2 error(s), 0 warning(s) (0 minute(s), 1 second(s))
-lpthread