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Date: Wed, 29 Mar 1995 04:33:44 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199503281833.EAA31430@godzilla.zeta.org.au>
To: CVS-commiters@freefall.cdrom.com, cvs-share@freefall.cdrom.com,
        nate@freefall.cdrom.com
Subject: Re: cvs commit: src/share/mk bsd.lib.mk
Sender: commit-owner@FreeBSD.org
Precedence: bulk

>  Modified:    share/mk bsd.lib.mk
>  Log:
>  Do what should have been done in v1.14
>  
>  *Really* strip out unused local symbols from shared objects.

Should have been done for v1.1 in FreeBSD-1.1 :-).

I checked some old libraries:

libc.so.1.1 on 2.0R cdrom:
	Lots of useless static symbols: LC*, ___gnu_compiled_c, _rcsid,
	_sccsid, gcc2_compiled..
	Lots of useless file sysmbols.
	Lots of USEFUL static symbols.  Static symbols for functions and
	data are relatively rare in libraries (350 out of 1909 static
	text symbols in libc.so.2.0-current) so it would cost little
	to keep them.

libc.so.2.0 on 2.0R cdrom:
	Same as above.

libc.so.2.0 current:
	Same as above except LC* are expanded to <module_name>LC*.

>  This was a typo on my part caused by an assumption that the profiled
>  libraries stripped symbols that same way as the non-profiled libraries.
>  
>  Cut-n-Paste strikes again.

This (replacing -x by -X) strips the useless symbols, the USEFUL symbols,
and still expands LC*.

Bruce