From owner-freebsd-arch  Thu Feb 15 18:25: 4 2001
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To: Warner Losh <imp@harmony.village.org>
Cc: arch@freebsd.org, brian@Awfulhak.org
Subject: Re: The whole libc thing. 
In-Reply-To: Message from Warner Losh <imp@harmony.village.org> 
   of "Thu, 15 Feb 2001 09:04:45 MST." <200102151604.f1FG4jW62156@harmony.village.org> 
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Date: Fri, 16 Feb 2001 02:25:15 +0000
From: Brian Somers <brian@Awfulhak.org>
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[.....]
> Step 5: <in a while, assuming that 3 and 4 work>
> 	Bump the major version of libc and start using something like
> 	peter's change.

Step 5.1: 
        Bump the version number on all libraries that don't contain 
        a dependency on libc but contain __sF references.

And I'm sure there are other horrors there...


For example:

  cd /usr/local/lib
  for f in lib*.so.*
  do
    objdump -x $f | fgrep NEEDED | fgrep -q libc.so. ||
      nm $f | fgrep -wq __sF && echo $f
  done

Produces a list of 23 libraries (out of 54) on my laptop :-(  Tell me 
if I'm wrong, but I believe these libraries contain no indication of 
what libc they want, but may be mucking about with stdio internals...

I think step 5 can't happen 'till we declare declare a D-day after 
which old binaries and libraries just won't work.

I also can't think of any way to soften the blow.  At the end of the 
day, there are binaries out there that not only know the size of sF, 
but they also play with the internals directly.  Binary support of 
this without some currently-unused-internal-changed-to-a-pointer 
kludge is unlikely AFAICT.

> Warner

-- 
Brian <brian@Awfulhak.org>                        <brian@[uk.]FreeBSD.org>
      <http://www.Awfulhak.org>                   <brian@[uk.]OpenBSD.org>
Don't _EVER_ lose your sense of humour !




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