PR 1150

* readelf.c (get_mips_symbol_other): New function.
  (get_symbol_other): New function.
  (process_symbol_table): Call get_symbol_other() to get a description of the
    st_other field if it contains more information than just the visibility.
* elfxx-mips.c (mips_elf_calculate_relocation): Ignore an undefined symbol if
    it is optional.
  (_bfd_mips_elf_merge_symbol_attribute): Make sure that the optional flag is
    merged as well as the visibility.
* elfxx-mips.h (_bfd_mips_elf_merge_symbol_attribute): Prototype.
  (elf_backend_merge_symbol_attribute): Define.
* mips.h (STO_OPTIONAL): Define.
  (ELF_MIPS_IS_OPTIONAL): Define.

include/elf/ChangeLog

@@ -1,3 +1,9 @@
+2005-11-11  Nick Clifton  <nickc@redhat.com>
+
+	PR 1150
+	* mips.h (STO_OPTIONAL): Define.
+	(ELF_MIPS_IS_OPTIONAL): Define.
+
 2005-09-30  Catherine Moore  <clm@cm00re.com>
 
 	* bfin.h: New file.

include/elf/mips.h

@@ -718,6 +718,13 @@ extern void bfd_mips_elf32_swap_reginfo_out
 
 /* This value is used for a mips16 .text symbol.  */
 #define STO_MIPS16		0xf0
+
+/* This bit is used on Irix to indicate a symbol whose definition
+   is optional - if, at final link time, it cannot be found, no
+   error message should be produced.  */
+#define STO_OPTIONAL		(1 << 2)
+/* A macro to examine the STO_OPTIONAL bit.  */
+#define ELF_MIPS_IS_OPTIONAL(other)	((other) & STO_OPTIONAL)
 
 /* The 64-bit MIPS ELF ABI uses an unusual reloc format.  Each
    relocation entry specifies up to three actual relocations, all at