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Re: RUNPATH truncated at some point during loading of shared object

Mike Frysinger wrote:
On Sunday 09 March 2008, Daniel Jacobowitz wrote:
On Sun, Mar 09, 2008 at 05:16:59PM -0400, Poor Yorick wrote:
ldd shows that a certain shared object on my system can not find one
of its dependencies.  The output of LD_DEBUG=libs shows that RUNPATH
initially contains four colon-separated paths, but after finding the
first four dependencies, RUNPATH suddenly contains only the first
two of its original four paths.  Could anyone please explain why the
value of RUNPATH might be changing while loading is in progress?
This is the difference between RPATH and RUNPATH.  RUNPATH only
affects searches requested by the object containing the tag.

well there are other differences as well ... such as ordering of search paths at runtime

btw, where do people get their copy of the ELF spec ? the version 1.2 spec from the TIS committee is sorely out of date ...

But I'm saying that I have an object, e.g., which requires and, which are both in /path/to/lib. LD_DEBUG=libs first reports that the value of RUNPATH is


and ldd finds in /path/to/lib. A moment later, LD_DEBUG=libs reports that the value of RUNPATH is


and is not found. So it looks like the value of RUNPATH has suddenly changed. has NEEDED entries for both and Does the explanation above really explain this scenario?


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