There seem to be some problems occurring during linking on the AIX machine. If you look at some of the builds you will see warnings such as the following;
[exec] g++: unrecognized option '-rdynamic'
[exec] ld: 0711-224 WARNING: Duplicate symbol: thread_creds_t
[exec] ld: 0711-345 Use the -bloadmap or -bnoquiet option to obtain more information.