saikumar@kolla:~$ ~/UnrealEngine/Engine/Binaries/ThirdParty/Mono/Linux/bin/mono ~/UnrealEngine/Engine/Binaries/DotNET/UnrealBuildTool.exe Development Linux -Project=/home/saikumar/Formula-Student-Driverless-Simulator/UE4Project/FSOnline.uproject -TargetType=Editor -Progress
Using 'git status' to determine working set for adaptive non-unity build (/home/saikumar/UnrealEngine).
Using 'git status' to determine working set for adaptive non-unity build (/home/saikumar/Formula-Student-Driverless-Simulator).
@progress push 5%
@progress 'Generating code...' 0%
@progress 'Generating code...' 67%
@progress 'Generating code...' 100%
@progress pop
Building BlocksEditor...
Performing 2 actions (8 in parallel)
@progress 'Compiling C++ source code...' 0%
[1/2] Link (lld) libUE4Editor-AirSim.so
ld.lld: error: undefined symbol: pthread_cond_clockwait
>>> referenced by __mutex_base:508 (/usr/lib/llvm-12/bin/../include/c++/v1/__mutex_base:508)
>>>               client.cc.o:(std::__1::condition_variable::__do_timed_wait(std::__1::unique_lock<std::__1::mutex>&, std::__1::chrono::time_point<std::__1::chrono::steady_clock, std::__1::chrono::duration<long long, std::__1::ratio<1l, 1000000000l> > >)) in archive /home/saikumar/Formula-Student-Driverless-Simulator/UE4Project/Plugins/AirSim/Source/AirLib/deps/rpclib/lib/librpc.a
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
@progress 'Compiling C++ source code...' 33%
@progress 'Compiling C++ source code...' 67%