If GCC5.5:
Linking CXX executable boolbd
lto-wrapper: fatal error: /usr/bin/c++ returned 1 exit status
compilation terminated.
Please show the output of the "cat /proc/cpuinfo" cmd.
Did I understand correctly, that using GCC-4.8.5 or GCC-4.9 on the same machine+distro you could successfully build connectivity_tool?