[webkit-gtk] update-webkitgtk-libs No such file or directory

[webkitgtk at curtissystemssoftware.com]

I am trying to build webkitgtk-2.14.2:

when invoking to step #2 on this webpage   
(https://trac.webkit.org/wiki/BuildingGtk):
~/webkit/webkitgtk-2.14.2$ Tools/Scripts/update-webkitgtk-libs


~/webkit/webkitgtk-2.14.2$ Tools/Scripts/update-webkitgtk-libsbash:  
Tools/Scripts/update-webkitgtk-libs: No such file or directory


ls Tools/Scripts/
run-gtk-tests  VCSUtils.pm  webkit-build-directory  webkitdirs.pm

what is needed to get it to build?
Is there updated build procedures?