> Surely it's approximately as easy to cache "ld.so.conf doesn't exist"
> as it is to cache "$LD_LIBRARY_PATH is unset"?

Except that it actually contains (on i386):

libm.so.0       machdep.fpu_present     1:libm387.so.0,libm.so.0

You also need the kernel to cache this (or use an ENV variable).
Otherwise you still have to do the namei but...

	David

-- 
David Laight: david@l8s.co.uk