Ubuntu20.04在安装UnrealEngine时,按照步骤来,执行最后的make时,出现以下错误,请问怎么解决。
[1/9] Link (lld) libUE4Editor-DisplayCluster.so
ld.lld: error: undefined symbol: pthread_cond_clockwait
>>> referenced by __mutex_base:511 (ThirdParty/Linux/LibCxx/include/c++/v1/__mutex_base:511)
>>> /home/xia/UnrealEngine/Engine/Plugins/Runtime/nDisplay/Intermediate/Build/Linux/B4D820EA/UE4Editor/Development/DisplayCluster/Module.DisplayCluster.cpp.o:(FDisplayClusterBarrier::Wait(double*, double*))
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [Makefile:1188:UE4Editor] 错误 6