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To: Alfred Perlstein <alfred@freebsd.org>
References: <20040110050033.GP9623@elvis.mu.org>
From: des@des.no (Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?=)
Date: Sat, 10 Jan 2004 12:16:58 +0100
In-Reply-To: <20040110050033.GP9623@elvis.mu.org> (Alfred Perlstein's
 message of "Fri, 9 Jan 2004 21:00:33 -0800")
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cc: hackers@freebsd.org
Subject: Re: help with linking please
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Alfred Perlstein <alfred@freebsd.org> writes:
> I'm having a hell of a time doing this so I can produce a static
> .o or .a with most of the symbols stripped.  Two problems seem to be
> that even if I use "ld -r -o main.o obj1.o obj2.c libfoo.a" then I
> can not strip symbols in obj1.o that are referenced from obj2.o
> even after I combine the object files.

You can link all your object files into one:

$ ld -r -o all.o foo.o bar.o baz.o

then strip unwanted symbols with {objcopy,strip} -N (or better yet,
use {objcopy,strip} -K to strip all symbols except the ones you want
to export)

this is precisely what we do with klds to reduce namespace pollution.

DES
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Dag-Erling Sm=F8rgrav - des@des.no