Re: etags for C++

[Richard Stallman]

    So perhaps it could be a good idea to have an Emacs command that would 
    accept a few inputs, like the top-level directory and whether to recurse 
    into its subdirectories, and will then run etags as appropriate.

Even better: it could write a shell command for you
and make it convenient to either run it or copy it into a makefile
and edit it.