The system linker in RHEL 5.5 doesn't support the --build-id parameter which Go 1.4 passes to it when linking ssl and sasl for enterprise builds.
This leads to errors such as in this task:
[2015/05/01 16:12:23.605] /usr/bin/ld: unrecognized option '--build-id=none' [2015/05/01 16:12:23.605] /usr/bin/ld: use the --help option for usage information [2015/05/01 16:12:23.605] collect2: ld returned 1 exit status ... [2015/05/01 16:12:29.925] ERROR: external binary not found: /srv/10gen/mci-exec/mci/shell/src/src/mongo-tools/mongodump