From owner-freebsd-current  Mon Feb 12 17:42: 1 2001
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To: Alfred Perlstein <bright@wintelcom.net>
Subject: Re: Patch for FILE problems (was Re: -CURRENT is bad for me...) 
Cc: freebsd-current@FreeBSD.ORG
In-reply-to: Your message of "Mon, 12 Feb 2001 17:38:58 PST."
		<20010212173858.Q3274@fw.wintelcom.net> 
References: <20010212173858.Q3274@fw.wintelcom.net>  <xzpd7cno08x.fsf@flood.ping.uio.no> <200102130105.f1D15aU56009@mobile.wemm.org> <xzpd7cno08x.fsf@flood.ping.uio.no> <200102130126.f1D1Q6W33680@harmony.village.org> <20010212173410.O3038@dragon.nuxi.com> 
Date: Mon, 12 Feb 2001 18:41:52 -0700
From: Warner Losh <imp@harmony.village.org>
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In message <20010212173858.Q3274@fw.wintelcom.net> Alfred Perlstein writes:
: > Actually going from libc.so.500 to libc.so.{x<500} is easy.
: > Copy libc.so.500 into /usr/lib/compat.  When the libc.so link is made to
: > libc.so.{x<500}, that is the lib version number that will get burned into
: > objects.  After the first `make world', rm /usr/lib/libc.so.500.
: 
: If that's true it doesn't seem like it would be terribly hard to 
: add a check to the installworld / world target to check for cross
: version upgrades and do the magic (or at least print out those
: instructions).

Actaully, I think that the libc.so.500 can remain in its place because
of bsd.lib.mk:
...
SHLIB_NAME=	lib${LIB}.so.${SHLIB_MAJOR}
SHLIB_LINK?=	lib${LIB}.so
...
.if defined(SHLIB_LINK)
	@ln -sf ${SHLIB_NAME} ${SHLIB_LINK}
.endif
...

As peter pointed out, it is the libc.so link that makes it the
default.

Warner


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