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Re: Mac OS X .dylib not working

From: Bob Friesenhahn
Subject: Re: Mac OS X .dylib not working
Date: Thu, 3 Mar 2011 21:00:03 -0600 (CST)
User-agent: Alpine 2.01 (GSO 1266 2009-07-14)

On Thu, 3 Mar 2011, Hans Åberg wrote:
So guile-2.0.0 using libltdl.7.dylib of libtool-2.4, can on Mac OS X 10.6.6 only open a dynamic library if the name of what it actually opens ends in .so (say by making a soft link using 'ln -s'); if it ends in .dylib, it cannot open it, even if the full name is given.


Are you sure that libltdl from libtool-2.4 is being used? The dtruss trace (from Michael Ellis) at http://lists.gnu.org/archive/html/bug-guile/2011-03/msg00020.html shows insecure accesses more like I would expect from a libtool version suffering from CVE-2009-3736, which is very dangerous under OS X. See


The recommended portable way to load modules is via a libtool module .la file. It is also recommended to load modules via a full path rather than via a search path because the search path might not be as secure and predicable as you might like.

Bob Friesenhahn
address@hidden, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/

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