On Sat, Jan 24, 2004 at 10:37:01AM +0100, Sven Luther wrote:
>On Fri, Jan 23, 2004 at 05:43:02PM -0500, David Dawes wrote:
>> On Wed, Jan 21, 2004 at 12:34:17PM +0100, Gian Filippo Pinzari wrote:
>> >David Dawes wrote:
>> >> I don't have any objections to doing this on Linux.  As I said, we
>> >> already do it on a range of other platforms and I'm not sure why
>> >> Linux is something of an exception in this regard.  Does anyone
>> >> have a good reason to not do this?
>> >
>> >In NX we use alternate versions of libX11, libXext and libXrender.
>> >This is done in a way that doesn't interfere with the existing X
>> >client environment, by setting LD_LIBRARY_PATH and, sometimes,
>> >LD_PRELOAD, before running the involved application. Probably the
>> >same applies to other systems built on top of X11. The use of
>> >-rpath is not going to compromise this possibility and I would
>> >consider this OK. Anyway, as a rule of thumb, I would prefer a
>> >system where the only libraries that are used are those listed in
>> >ld.so.conf. A specific application could still override the system
>> >settings. Such application might wish to do so in order to
>> >coexist with an alternate setup (think at two different versions
>> >of KDE or GNOME installed on the same computer). Having applications
>> >defaulting to a hardcoded library path could be a nightmare. I
>> >would really prefer to deal with a program failing with an unre-
>> >solved symbol instead of one dumping its core in the background
>> >for no apparent reason.
>> 
>> So long as ld.so.conf overrides the rpath (does it?) then this won't
>> matter.  LD_LIBRARY_PATH and LD_PRELOAD won't work for setuid apps.
>> 
>> I'd be happy to make the change for 4.4 if there is some concensus
>> that it isn't a bad thing to do, and providing that ld.so.conf
>> provides a mechanism for overriding the rpath.
>
>If you do that, i can guarantee you that all distributions will patch it
>to restore the previous -rpath less behavior.

Since ld.so.conf does not overriede -rpath, it won't be added for Linux.

David
-- 
David Dawes
developer/release engineer                      The XFree86 Project
www.XFree86.org/~dawes
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