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Re: A patch for elf32.em (Re: GNU/Linux vs. libtool --no-undefined)
On Tue, Feb 06, 2001 at 07:00:40PM -0800, Ian Lance Taylor wrote:
>
> 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.
I like it for building executables. It can catch some conflicts due
to symbol versioning.
>
> 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?
>
I think the warning comes from building DSOs. It is the resulting
DSO who has undefine symbols.
--
H.J. Lu (hjl@valinux.com)