This tool greps through files for SIGNAL() or SLOT() macros and pipes the signals/slots through QMetaObject::normalizedSignature(). Rationale: In connect statements, you'll get a micro-speed update when passing in normalized signatures for signals and slots. Run it without any arguments to see the command line parameters. Typical usage on Qt: # find all files with non-normalized signal/slot connections and p4 edit them normalize $QTDIR/src | xargs p4 edit # replace all non-normalized signal/slots normalize --modify $QTDIR/src # p4 diff to see that everything is OK then submit :) p4 submit $QTDIR/src/...