* libelf.h (ELF_LINK_HASH_DEFINED_WEAK): Define.

* elfcode.h (elf_link_add_object_symbols): If symbol is defined as
	weak, set ELF_LINK_HASH_DEFINED_WEAK.
	(elf_link_output_extsym): If symbol is defined as weak, mark it
	STB_WEAK.

bfd/ChangeLog

@@ -1,5 +1,11 @@
 Sat Jul 16 21:10:39 1994  Ian Lance Taylor  (ian@sanguine.cygnus.com)
 
+	* libelf.h (ELF_LINK_HASH_DEFINED_WEAK): Define.
+	* elfcode.h (elf_link_add_object_symbols): If symbol is defined as
+	weak, set ELF_LINK_HASH_DEFINED_WEAK.
+	(elf_link_output_extsym): If symbol is defined as weak, mark it
+	STB_WEAK.
+
 	* libelf.h (struct bfd_elf_section_data): Add relocs field.
 	(shdr_name): Remove; unused.
 	* elfcode.h (elf_slurp_reloc_table): Rewrote to handle both REL

bfd/elfcode.h

@@ -4286,7 +4286,19 @@ elf_link_add_object_symbols (abfd, info)
 		 with the new definition.  */
 	      h->root.type = bfd_link_hash_undefined;
 	      h->root.u.undef.abfd = h->root.u.def.section->owner;
+	      h->elf_link_hash_flags &=~ ELF_LINK_HASH_DEFINED_WEAK;
 	    }
+
+	  /* If this is a weak definition which we are going to use,
+	     and the symbol is currently undefined, record that the
+	     definition is weak.  */
+	  if (definition
+	      && (flags & BSF_WEAK) != 0
+	      && ! bfd_is_und_section (sec)
+	      && (h->root.type == bfd_link_hash_new
+		  || h->root.type == bfd_link_hash_undefined
+		  || h->root.type == bfd_link_hash_weak))
+	    h->elf_link_hash_flags |= ELF_LINK_HASH_DEFINED_WEAK;
 	}
 
       if (! (_bfd_generic_link_add_one_symbol
@@ -5613,8 +5625,12 @@ elf_link_output_extsym (h, data)
 
   sym.st_value = 0;
   sym.st_size = h->size;
-  sym.st_info = ELF_ST_INFO (STB_GLOBAL, h->type);
   sym.st_other = 0;
+  if (h->root.type == bfd_link_hash_weak
+      || (h->elf_link_hash_flags & ELF_LINK_HASH_DEFINED_WEAK) != 0)
+    sym.st_info = ELF_ST_INFO (STB_WEAK, h->type);
+  else
+    sym.st_info = ELF_ST_INFO (STB_GLOBAL, h->type);
 
   switch (h->root.type)
     {
@@ -5631,7 +5647,6 @@ elf_link_output_extsym (h, data)
     case bfd_link_hash_weak:
       input_sec = bfd_und_section_ptr;
       sym.st_shndx = SHN_UNDEF;
-      sym.st_info = ELF_ST_INFO (STB_WEAK, h->type);
       break;
 
     case bfd_link_hash_defined:

bfd/libelf.h

@@ -111,6 +111,8 @@ struct elf_link_hash_entry
 #define ELF_LINK_HASH_DEF_DYNAMIC_MULTIPLE 040
   /* Dynamic symbol has been adjustd.  */
 #define ELF_LINK_HASH_DYNAMIC_ADJUSTED 0100
+  /* Symbol is defined as weak.  */
+#define ELF_LINK_HASH_DEFINED_WEAK 0200
 };
 
 /* ELF linker hash table.  */