[gcc] libpthread.so.0: error adding symbols: DSO missing from command line

I also encountered same problem. I do not know why, i just add -lpthread option to compiler and everything ok.

Old:

$ g++ -rdynamic -m64 -fPIE -pie  -o /tmp/node/out/Release/mksnapshot ...*.o *.a -ldl -lrt

got following error. If i append -lpthread option to above command then OK.

/usr/bin/ld: /tmp/node/out/Release/obj.host/v8_libbase/deps/v8/src/base/platform/condition-variable.o: undefined reference to symbol 'pthread_condattr_setclock@@GLIBC_2.3.3'
//lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status

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