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Date:      Tue, 13 Mar 2007 13:51:46 -0400
From:      Kris Kennaway <kris@obsecurity.org>
To:        Robert Huff <roberthuff@rcn.com>
Cc:        questions <freebsd-questions@freebsd.org>
Subject:   Re: 6.2 running 4.x binaries (missing libc.so.3)
Message-ID:  <20070313175145.GB9609@xor.obsecurity.org>
In-Reply-To: <17910.49887.381333.73086@jerusalem.litteratus.org>
References:  <200703131232.l2DCWn978167@lakes.dignus.com> <17910.47489.986075.631967@jerusalem.litteratus.org> <1173798299.26618.6.camel@localhost> <17910.49887.381333.73086@jerusalem.litteratus.org>

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On Tue, Mar 13, 2007 at 10:27:27AM -0500, Robert Huff wrote:
> Sergio Lenzi writes:
>=20
> >  > >  However, the 4.x binaries want to find libc.so.3, which
> >  > >  doesn't seem to be anywhere around.
> >  > > =20
> >  > >  Anyone know the trick to getting this to work?
> >  >=20
> >  > 	/usr/ports/misc/compat4x ?
> > =20
> >  or as a workaround=20
> >  add in the /etc/libmap.conf
> > =20
> >  libc.so.3                        libc.so
> >  libm.so.3                       libm.so
> > =20
> >  ......
> >  that is every shared library it complains add it to=20
> >  the /etc/libmap.conf
>=20
> 	That can work.
> 	On the other hand, there's no guarantee the ABI - never mind
> the internal operation - of any function will remain constant across
> a major version bump.  (As far as I know.)

In fact in FreeBSD a version bump is almost always a guarantee that
they are incompatible and you will break some applications by doing
this.

Kris

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