linux-kernel - Re: package managers [was: FatELF patches...]

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Message-ID: <Pine.LNX.4.64.0911050057280.1469@artax.karlin.mff.cuni.cz>
Date:	Thu, 5 Nov 2009 01:05:23 +0100 (CET)
From:	Mikulas Patocka <mikulas@...ax.karlin.mff.cuni.cz>
To:	Valdis.Kletnieks@...edu
cc:	Martin Nybo Andersen <tweek@...ek.dk>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	"Ryan C. Gordon" <icculus@...ulus.org>,
	Måns Rullgård <mans@...sr.com>,
	linux-kernel@...r.kernel.org
Subject: Re: package managers [was: FatELF patches...]

> Walking $PATH is even worse - if it finds a /usr/local/bin/ld, it's a pretty
> damned good guess that it's there *because* it's not the /bin/ld that the
> system shipped with.  So why should it use it?

If it finds /usr/local/bin/ld it's because the admin installed it there 
--- and he installed it there because he wants it to be used. So it's OK 
to use it.

Anyway, if you have both /usr/bin/ld and /usr/local/bin/ld, you are in a 
pretty unpleasant situation because different programs search for them in 
a different order and you never know which one will be used. (i.e. what if 
./configure scripts prepends /usr/local/bin to $PATH ... or if it prepends 
/usr/bin? who knows - no one can check all ./configure scripts. These 
scripts do crazy things just because it worked around some flaw on some 
ancient Unix system).

Mikulas
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