From:	"A.Appleyard" <A DOT APPLEYARD AT fs2 DOT mt DOT umist DOT ac DOT uk>
Organization:	Materials Science Centre
To:	DJGPP AT delorie DOT com
Date:	Thu, 16 May 1996 14:49:24 GMT
Subject:	Re: Unused functions
Message-ID:	<32D086403B@fs2.mt.umist.ac.uk>

  A.Appleyard wrote wanting djgpp's linker to be able to say which entry
points are (1) only used within the same file, so he can declare them
`static', (2) not used at all, so he can delete them. ...

  Eli Zaretskii <eliz AT is DOT elta DOT co DOT il> replied (Subject: Re: Unused functions):-

> Then how about just grep'ping through the sources?  You could create a file
> with the names of all the functions defined by your program then call fgrep
> to search for these names. If all you find for a certain function is just
> its declaration and definition, that function is not used. ...

  Not so easy with user-declared operators, which I use a lot of. I still say
that what is needed is a djgpp linker option to complain about entry points
(1) unused, (2) of external type but only used in that file.

> GCC has a switch that causes it to output a list of all the functions
> declared by a source file. (Finding that switch in the GCC docs is left as
> an exercise to the interested readers ;-).

  But please what is that switch?

  P.S. to Eli: 1-6 March 1996 I was scuba diving in the Red Sea (on the Sea
Surveyor), 18 dives in 6 days, infinity fish everywhere.

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