Date: Fri, 10 Oct 2008 18:55:57 +0530 From: Shakul M Hameed <smohideen@mx2.labs.rootshell.ws> To: Jeremy Chadwick <koitsu@FreeBSD.org> Cc: Drew Tomlinson <drew@mykitchentable.net>, freebsd-questions@freebsd.org Subject: Re: How To Get libm.so.4? Message-ID: <20081010132556.GC1917@freebsdbox> In-Reply-To: <20081010074046.GA25922@icarus.home.lan> References: <48EE6046.8020906@mykitchentable.net> <20081010122613.GA1864@freebsdbox> <20081010071255.GA25451@icarus.home.lan> <20081010131021.GB1917@freebsdbox> <20081010074046.GA25922@icarus.home.lan>
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Thanks, Jeremy. For letting me know the dis-advantages softlinking in long run. On Fri, Oct 10, 2008 at 12:40:46AM -0700, Jeremy Chadwick wrote: > On Fri, Oct 10, 2008 at 06:40:22PM +0530, Shakul M Hameed wrote: > > I think its not a very bad idea, unless your app is dependent on a routine which is deprecated and > > not avaiable in the latest version of library. For testing purpose this should be ok. > > I disagree. It _is_ a bad idea. > > There is absolutely *no* guarantee that symbols will be identical > between two revisions of a shared library, especially across a > major revision. I'm not talking about missing symbols detected during > run-time either; I'm talking about internal changes that could affect > the operation of a program which relies on certain behaviour of > functions in that library, which has changed in a newer version (yet > kept the same function/calling semantics). > > And let's not forget about shared libraries that are linked to other > shared libraries, resulting in a dependency tree of madness, where > you'll suddenly find yourself making symlinks all over the place. (You > should use libmap.conf for this purpose anyway). > > So like I said -- it IS a bad idea. Please do not do it. > > -- > | Jeremy Chadwick jdc at parodius.com | > | Parodius Networking http://www.parodius.com/ | > | UNIX Systems Administrator Mountain View, CA, USA | > | Making life hard for others since 1977. PGP: 4BD6C0CB |
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