When I invoke "scons --release clientBuild":
g++ -o build/firstExample -Wl,--as-needed -Wl,-zdefs build/mongo/client/examples/first.o -Lbuild -Lsrc -lmongoclient -lboost_thread-mt -lboost_filesystem-mt -lboost_system-mt /usr/bin/ld: build/libmongoclient.a(spin_lock.o): undefined reference to symbol 'pthread_yield@@GLIBC_2.2.5' /usr/bin/ld: note: 'pthread_yield@@GLIBC_2.2.5' is defined in DSO /lib64/libpthread.so.0 so try adding it to the linker command line /lib64/libpthread.so.0: could not read symbols: Invalid operation collect2: ld returned 1 exit status scons: *** [build/firstExample] Error 1 scons: building terminated because of errors.
The Linux 64-bit Nightly builder seems to be affected by this problem in a similar way.