A patch to only warn undefined symbol in DSO to be built

[Alan Modra]

On Tue, 6 Feb 2001, H . J . Lu wrote:

> Here is a patch.

I have a competing one that I was busy checking when your email arrived. 
:-)

Index: elflink.h
===================================================================
RCS file: /cvs/src/src/bfd/elflink.h,v
retrieving revision 1.78
diff -u -p -r1.78 elflink.h
--- elflink.h	2001/01/23 11:45:53	1.78
+++ elflink.h	2001/02/07 07:58:30
@@ -5092,9 +5092,10 @@ elf_link_output_extsym (h, data)
      warnings for them.  */
   if (! finfo->info->relocateable
       && ! finfo->info->allow_shlib_undefined
-      && ! (finfo->info->shared
-	    && !finfo->info->no_undefined)
       && h->root.type == bfd_link_hash_undefined
+      && (! finfo->info->shared
+	  || ! finfo->info->no_undefined
+	  || (h->root.u.undef.abfd->flags & DYNAMIC) == 0)
       && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0
       && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0)
     {

It does the same thing in a slightly different way, but also checks for
bfd_link_hash_undefined before accessing h_.root.u.undef

Alan