Re: adding rpath to existing executable

["Marty Leisner" <leisner@rochester.rr.com>]

> 
> >    Is there a simple way to add an RPATH to an already existing
> >    executable using binutils?  (this is on i386 elf)
> > 
> > No.
> 
> Ok, let me ask this in a different way ;-)
> 
> Is there a _complicated_ way to add an RPATH to an already existing
> executable using binutils? 
> 
> I looked at libbfd for half an hour, and it seems like I could just
> read the executable file using bfd_openr and friends, add the rpath to
> the private data and write it back. But I find it hard to believe that
> nobody else has had a need for such a program before. 
> 
> Is libbfd capable of doing this or is more trickery involved that I am
> not aware of?
> 
> Kasper

I would find such a program to be very useful.  But I get around it
with aliases/shell scripts with play with LD_LIBRARY_PATH)

On another note, is there any documentation for how the dynamic linker for elf
works?

Reading rtld.c, there's:
Valid options for the LD_DEBUG environment variable are:\n\
\n\
  bindings  display information about symbol binding\n\
  files     display processing of files and libraries\n\
  help      display this help message and exit\n\
  libs      display library search paths\n\
  reloc     display relocation processing\n\
  symbols   display symbol table processing\n\
  versions  display version dependencies\n\
\n\

This seems very useful, it is documented anyplace?

Marty Leisner



-- 
marty
leisner@rochester.rr.com  
The Feynman problem solving Algorithm
        1) Write down the problem
        2) Think real hard
        3) Write down the answer
                Murray Gell-mann in the NY Times