A patch for elf32.em (Re: GNU/Linux vs. libtool --no-undefined)

[Ian Lance Taylor]

"H . J . Lu" <hjl@valinux.com> writes:

> > Hmm, how about the following (completely untested) patch?
> > 
> > -   if (link_info.relocateable || link_info.shared)
> > +   if (link_info.relocateable || (link_info.shared && ! link_info.no_undefined))

> Any comments?

I'm no longer completely convinced that the linker ought to do that
searching at all.  I think I put it in because either Thomas Bushnell
or Roland McGrath asked for it, and I think Roland McGrath eventually
decided that he didn't need it.  I don't think that Solaris does this
sort of searching at all.

In any case, doing this searching for a shared library seems
counterintuitive.

The original error appears to be warning about an undefined symbol
reference from a shared library.  Is that so?  If it is, then I think
the linker should be fixed to not warn about undefined references from
shared libraries, even when --no-undefined is used.  We care whether
each reference is satisfied somewhere.  I don't think we care whether
each shared library included in the link has all symbols satisfied.
Do we?

Ian