Re: feature request: stronger LD_RUN_PATH

[Paul Jarc]

I wrote:
> I'd like to have some way of expressing, via environment variables,
> "add these directories to the rpath list, in addition to any given
> on the command line".

... and any given by other means.  The idea is that I should be able
to supplement the rpath list in a non-interfering way, without delving
into a package's build system.  E.g., I could set $LD_RUN_PATH_STRONG,
and the presence of that variable would indicate that $LD_RUN_PATH
should also be searched, after any given by -R/-rpath/--rpath.

Of course, some packages' build systems might set LD_RUN_PATH
themselves, without including the old value in the new value, but I
would consider that a bug in those build systems.  I'm not asking you
to solve that problem.

> I'd also like to be able to specify the path to the dynamic linker
> in the environment, although since there can be only one dynamic
> linker, it makes sense for the one given on the command line to be
> favored.

Hmm... if gcc always supplies a dynamic linker argument, then I guess
this should be a gcc feature request; the argument given by gcc would
override the environment variable, if it was up to ld to use the
environment variable.  Does anyone know whether that's always true?


paul