Re: How do I link to a shared lib without having that lib's dependencies (the way MS link does)

["H. J. Lu" <hjl at lucon dot org>]

On Tue, Aug 12, 2003 at 01:55:35PM -0700, Ian Lance Taylor wrote:
> Richard Henderson <rth@redhat.com> writes:
> 
> > On Tue, Aug 12, 2003 at 09:44:28AM -0700, Ian Lance Taylor wrote:
> > > I think this is a bug.  The GNU linker is reporting an error where it
> > > should report a warning.
> > 
> > Eh, maybe.  If the user had used -rpath-link, as prompted,
> > ld would have found libB.so from libA.so's dependencies.
> 
> Sure, but the -rpath-link message is a warning, not an error, as I
> think it should be.
> 
> > I don't think downgrading this to a warning is a good idea.
> > Too often it will be ignored.
> 
> Hmmm.  To me it really is just a warning.  There are a number of ways
> in which everything could work out fine.  We're not talking here about
> an undefined symbol in the program itself.  We're talking about an
> undefined symbol in a shared library against which the program is
> linked.
> 
> However, I could see keeping it as an error for
> --no-allow-shlib-undefined, as H.J. suggested, and reversing the
> default so that --no-allow-shlib-undefined is the default while
> --allow-shlib-undefined permits undefined symbols.  This would of
> course be predicated on cleaning up --allow-shlib-undefined so that it
> has only one meaning instead of two.
> 
> In fact, that approach seems to me like it might be closer to the
> original intent of --allow-shlib-undefined, based on the ChangeLog
> entry which created it:
> 
> 2000-11-18  Fred Fish  <fnf@be.com>
> 
> 	* lexsup.c (OPTION_ALLOW_SHLIB_UNDEFINED): Define.
> 	(ld_options): Entry for --allow-shlib-undefined.
> 	(parse_args): Handle OPTION_ALLOW_SHLIB_UNDEFINED.
> 	* ldmain.c (main): Initialize link_info.allow_shlib_undefined
> 	to false.
> 
> Nick reversed the default here:
>     http://sources.redhat.com/ml/binutils/2003-02/msg00232.html
> 

Nick made the change for

http://sources.redhat.com/ml/binutils/2003-02/msg00024.html

It is a long thread.

H.J.