Re: Running ldconfig

[Phil Blundell <philb at gnu dot org>]

On Mon, 2008-11-03 at 10:02 +0000, Michael Abbott wrote:
> So: any sensible thoughts on this?  I'm tempted to try building a 
> dynamically linked ldconfig...

I used to have some patches to build a dynamically linked ldconfig for
glibc 2.3 or so, and the resulting binary always seemed to work just
fine.  Those patches have become somewhat bit-rotten since and don't
apply to newer versions but I don't think there is any reason why you
couldn't do the same thing with a modern glibc.

However, as you say, it is not strictly necessary to have ldconfig at
all and more recently this is what I have been doing for embedded cases.
You can cut down the number of directories that ld.so needs to search by
turning off hwcap support, removing all extraneous entries from
ld.so.conf, and coalescing your libraries into fewer directories (for
example, if you still have /usr/X11R6/lib, move those libraries
into /usr/lib and eliminate the search in /usr/X11R6).  For most systems
it should be straightforward to just search /lib and /usr/lib, and with
a bit of extra effort I think you could get down to just searching /lib
for all libraries.

p.



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