Re: GDB honouring RPATH in binaries.

Kris Warkentin
2003-02-20T19:54:08Z

> On Thu, Feb 20, 2003 at 02:44:52PM -0500, Kris Warkentin wrote:
> > > Question: when do we need to find shared libraries that we can't use a
> > > full path + solib-absolute-prefix, where RPATH would be in the least
> > > useful? RPATH only matters when you have multiple places you could
> > > find the library and are interested in which one you got; if there is
a
> > > mapping between target and host filesystems, it should be
> > > solib-absolute-prefix only.
> > >
> > > We generally get full pathnames of loaded modules from the dynamic
> > > linker, and use that. Is this a problem for QNX?
> >
> > In the remote case I suppose it is. The linker on the remote will have
> > loaded /lib/libc.so.2 or some such but on the host, that will be
> > $QNX_TARGET/$CPU/lib/libc.so.2. Hence solib-absolute-prefix being set
to
> > $QNX_TARGET/$CPU. I'm just looking for better ways to get this all to
work
> > together with a minimum of fuss for the end user.
>
> I guess I don't see the problem. If we have solib-absolute-prefix set,
> and we retrieve the string "/lib/libc.so.2" from the remote target...

You're preaching to the choir. ;-) I'm just trying to form an intelligent
argument for those in my company who want to use RPATH. In solib_open(), we
search the inferior's LD_LIBRARY_PATH and PATH as a fallback so I wonder if
there would be any harm in at least looking at the RPATH? Perhaps if we
just appended it to solib-search-path or one of the others? I dunno.
That's why I'm asking.

Kris