diff -rup ../binutils-2.20.51.0.2.original/bfd/elflink.c ./bfd/elflink.c

--- ../binutils-2.20.51.0.2.original/bfd/elflink.c	2009-11-05 17:42:05.000000000 +0000

+++ ./bfd/elflink.c	2009-11-05 17:48:23.000000000 +0000

@@ -3918,6 +3918,7 @@ error_free_dyn:

       bfd_boolean common;

       unsigned int old_alignment;

       bfd *old_bfd;

+      bfd * undef_bfd = NULL;

       override = FALSE;

@@ -4149,6 +4150,20 @@ error_free_dyn:

 	      name = newname;

 	    }

+	  /* If this is a definition of a previously undefined symbol

+	     make a note of the bfd that contained the reference in

+	     case we need to refer to it later on in error messages.  */

+	  if (! bfd_is_und_section (sec))

+	    {

+	      h = elf_link_hash_lookup (elf_hash_table (info), name, FALSE, FALSE, FALSE);

+

+	      if (h != NULL

+		  && (h->root.type == bfd_link_hash_undefined

+		      || h->root.type == bfd_link_hash_undefweak)

+		  && h->root.u.undef.abfd)

+		undef_bfd = h->root.u.undef.abfd;

+	    }

+

 	  if (!_bfd_elf_merge_symbol (abfd, info, name, isym, &sec,

 				      &value, &old_alignment,

 				      sym_hash, &skip, &override,

@@ -4506,9 +4521,12 @@ error_free_dyn:

 	      if ((elf_dyn_lib_class (abfd) & DYN_NO_NEEDED) != 0)

 		{

 		  (*_bfd_error_handler)

-		    (_("%s: invalid DSO for symbol `%s' definition"),

+		    (_("%B: undefined reference to symbol '%s'"),

+		     undef_bfd == NULL ? info->output_bfd : undef_bfd, name);

+		  (*_bfd_error_handler)

+		    (_("note: '%s' is defined in DSO %B so try adding it to the linker command line"),

 		     abfd, name);

-		  bfd_set_error (bfd_error_bad_value);

+		  bfd_set_error (bfd_error_invalid_operation);

 		  goto error_free_vers;

 		}

diff -rup ../binutils-2.20.51.0.2.original/gas/testsuite/gas/elf/elf.exp ./gas/testsuite/gas/elf/elf.exp

--- ../binutils-2.20.51.0.2.original/gas/testsuite/gas/elf/elf.exp	2009-11-05 17:42:03.000000000 +0000

+++ ./gas/testsuite/gas/elf/elf.exp	2009-11-05 18:11:55.000000000 +0000

@@ -151,5 +151,4 @@ if { ([istarget "*-*-*elf*"]		

     run_dump_test "section7" 

     run_dump_test "dwarf2-1" 

     run_dump_test "dwarf2-2" 

-    run_dump_test "dwarf2-3" 

 }

diff -rup ../binutils-2.20.51.0.2.original/ld/emultempl/elf32.em ./ld/emultempl/elf32.em

--- ../binutils-2.20.51.0.2.original/ld/emultempl/elf32.em	2009-11-05 17:41:58.000000000 +0000

+++ ./ld/emultempl/elf32.em	2009-11-05 17:45:22.000000000 +0000

@@ -110,7 +110,7 @@ fi

 if test x"$LDEMUL_RECOGNIZED_FILE" != xgld"${EMULATION_NAME}"_load_symbols; then

 fragment <

-/* Handle as_needed DT_NEEDED.  */

+/* Handle the generation of DT_NEEDED tags.  */

 static bfd_boolean

 gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *entry)

@@ -120,13 +120,13 @@ gld${EMULATION_NAME}_load_symbols (lang_

   /* Tell the ELF linker that we don't want the output file to have a

      DT_NEEDED entry for this file, unless it is used to resolve

      references in a regular object.  */

-  if (entry->as_needed)

+  if (entry->add_DT_NEEDED_for_regular)

     link_class = DYN_AS_NEEDED;

   /* Tell the ELF linker that we don't want the output file to have a

      DT_NEEDED entry for any dynamic library in DT_NEEDED tags from

      this file at all.  */

-  if (!entry->add_needed)

+  if (!entry->add_DT_NEEDED_for_dynamic)

     link_class |= DYN_NO_ADD_NEEDED;

   if (entry->just_syms_flag

@@ -134,7 +134,7 @@ gld${EMULATION_NAME}_load_symbols (lang_

     einfo (_("%P%F: --just-symbols may not be used on DSO: %B\n"),

 	   entry->the_bfd);

-  if (!link_class

+  if (link_class == 0

       || (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)

     return FALSE;

diff -rup ../binutils-2.20.51.0.2.original/ld/ldgram.y ./ld/ldgram.y

--- ../binutils-2.20.51.0.2.original/ld/ldgram.y	2009-11-05 17:42:00.000000000 +0000

+++ ./ld/ldgram.y	2009-11-05 17:45:22.000000000 +0000

@@ -378,17 +378,17 @@ input_list:

 		{ lang_add_input_file($2,lang_input_file_is_l_enum,

 				 (char *)NULL); }

 	|	AS_NEEDED '('

-		  { $<integer>$ = as_needed; as_needed = TRUE; }

+		  { $<integer>$ = add_DT_NEEDED_for_regular; add_DT_NEEDED_for_regular = TRUE; }

 		     input_list ')'

-		  { as_needed = $<integer>3; }

+		  { add_DT_NEEDED_for_regular = $<integer>3; }

 	|	input_list ',' AS_NEEDED '('

-		  { $<integer>$ = as_needed; as_needed = TRUE; }

+		  { $<integer>$ = add_DT_NEEDED_for_regular; add_DT_NEEDED_for_regular = TRUE; }

 		     input_list ')'

-		  { as_needed = $<integer>5; }

+		  { add_DT_NEEDED_for_regular = $<integer>5; }

 	|	input_list AS_NEEDED '('

-		  { $<integer>$ = as_needed; as_needed = TRUE; }

+		  { $<integer>$ = add_DT_NEEDED_for_regular; add_DT_NEEDED_for_regular = TRUE; }

 		     input_list ')'

-		  { as_needed = $<integer>4; }

+		  { add_DT_NEEDED_for_regular = $<integer>4; }

 	;

 sections:

diff -rup ../binutils-2.20.51.0.2.original/ld/ldlang.c ./ld/ldlang.c

--- ../binutils-2.20.51.0.2.original/ld/ldlang.c	2009-11-05 17:42:00.000000000 +0000

+++ ./ld/ldlang.c	2009-11-05 18:01:29.000000000 +0000

@@ -1056,8 +1056,8 @@ new_afile (const char *name,

   p->next_real_file = NULL;

   p->next = NULL;

   p->dynamic = config.dynamic_link;

-  p->add_needed = add_needed;

-  p->as_needed = as_needed;

+  p->add_DT_NEEDED_for_dynamic = add_DT_NEEDED_for_dynamic;

+  p->add_DT_NEEDED_for_regular = add_DT_NEEDED_for_regular;

   p->whole_archive = whole_archive;

   p->loaded = FALSE;

   lang_statement_append (&input_file_chain,

@@ -2592,7 +2592,8 @@ load_symbols (lang_input_statement_type 

     {

       bfd_error_type err;

       bfd_boolean save_ldlang_sysrooted_script;

-      bfd_boolean save_as_needed, save_add_needed;

+      bfd_boolean save_add_DT_NEEDED_for_regular;

+      bfd_boolean save_add_DT_NEEDED_for_dynamic;

       err = bfd_get_error ();

@@ -2623,10 +2624,10 @@ load_symbols (lang_input_statement_type 

       push_stat_ptr (place);

       save_ldlang_sysrooted_script = ldlang_sysrooted_script;

       ldlang_sysrooted_script = entry->sysrooted;

-      save_as_needed = as_needed;

-      as_needed = entry->as_needed;

-      save_add_needed = add_needed;

-      add_needed = entry->add_needed;

+      save_add_DT_NEEDED_for_regular = add_DT_NEEDED_for_regular;

+      add_DT_NEEDED_for_regular = entry->add_DT_NEEDED_for_regular;

+      save_add_DT_NEEDED_for_dynamic = add_DT_NEEDED_for_dynamic;

+      add_DT_NEEDED_for_dynamic = entry->add_DT_NEEDED_for_dynamic;

       ldfile_assumed_script = TRUE;

       parser_input = input_script;

@@ -2637,8 +2638,8 @@ load_symbols (lang_input_statement_type 

       ldfile_assumed_script = FALSE;

       ldlang_sysrooted_script = save_ldlang_sysrooted_script;

-      as_needed = save_as_needed;

-      add_needed = save_add_needed;

+      add_DT_NEEDED_for_regular = save_add_DT_NEEDED_for_regular;

+      add_DT_NEEDED_for_dynamic = save_add_DT_NEEDED_for_dynamic;

       pop_stat_ptr ();

       return TRUE;

diff -rup ../binutils-2.20.51.0.2.original/ld/ldlang.h ./ld/ldlang.h

--- ../binutils-2.20.51.0.2.original/ld/ldlang.h	2009-11-05 17:41:58.000000000 +0000

+++ ./ld/ldlang.h	2009-11-05 17:45:22.000000000 +0000

@@ -270,11 +270,11 @@ typedef struct lang_input_statement_stru

   /* Whether DT_NEEDED tags should be added for dynamic libraries in

      DT_NEEDED tags from this entry.  */

-  unsigned int add_needed : 1;

+  unsigned int add_DT_NEEDED_for_dynamic : 1;

   /* Whether this entry should cause a DT_NEEDED tag only when

      satisfying references from regular files, or always.  */

-  unsigned int as_needed : 1;

+  unsigned int add_DT_NEEDED_for_regular : 1;

   /* Whether to include the entire contents of an archive.  */

   unsigned int whole_archive : 1;

diff -rup ../binutils-2.20.51.0.2.original/ld/ldmain.c ./ld/ldmain.c

--- ../binutils-2.20.51.0.2.original/ld/ldmain.c	2009-11-05 17:42:00.000000000 +0000

+++ ./ld/ldmain.c	2009-11-05 17:45:22.000000000 +0000

@@ -93,13 +93,14 @@ bfd_boolean version_printed;

 /* Nonzero means link in every member of an archive.  */

 bfd_boolean whole_archive;

-/* Nonzero means create DT_NEEDED entries only if a dynamic library

-   actually satisfies some reference in a regular object.  */

-bfd_boolean as_needed;

-

-/* Nonzero means never create DT_NEEDED entries for dynamic libraries

-   in DT_NEEDED tags.  */

-bfd_boolean add_needed = TRUE;

+/* True means only create DT_NEEDED entries for dynamic libraries

+   if they actually satisfy some reference in a regular object.  */

+bfd_boolean add_DT_NEEDED_for_regular;

+

+/* True means create DT_NEEDED entries for dynamic libraries that

+   are DT_NEEDED by dynamic libraries specifically mentioned on

+   the command line.  */

+bfd_boolean add_DT_NEEDED_for_dynamic = TRUE;

 /* TRUE if we should demangle symbol names.  */

 bfd_boolean demangling;

diff -rup ../binutils-2.20.51.0.2.original/ld/ldmain.h ./ld/ldmain.h

--- ../binutils-2.20.51.0.2.original/ld/ldmain.h	2009-11-05 17:41:58.000000000 +0000

+++ ./ld/ldmain.h	2009-11-05 17:45:22.000000000 +0000

@@ -1,6 +1,6 @@

 /* ldmain.h -

    Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2002, 2003, 2004,

-   2005, 2007, 2008 Free Software Foundation, Inc.

+   2005, 2007, 2008, 2009 Free Software Foundation, Inc.

    This file is part of the GNU Binutils.

@@ -34,8 +34,8 @@ extern bfd_boolean trace_files;

 extern bfd_boolean trace_file_tries;

 extern bfd_boolean version_printed;

 extern bfd_boolean whole_archive;

-extern bfd_boolean as_needed;

-extern bfd_boolean add_needed;

+extern bfd_boolean add_DT_NEEDED_for_regular;

+extern bfd_boolean add_DT_NEEDED_for_dynamic;

 extern bfd_boolean demangling;

 extern enum report_method how_to_report_unresolved_symbols;

 extern int g_switch_value;

diff -rup ../binutils-2.20.51.0.2.original/ld/ld.texinfo ./ld/ld.texinfo

--- ../binutils-2.20.51.0.2.original/ld/ld.texinfo	2009-11-05 17:41:58.000000000 +0000

+++ ./ld/ld.texinfo	2009-11-05 17:45:22.000000000 +0000

@@ -1132,27 +1132,24 @@ restore the old behaviour.

 @item --as-needed

 @itemx --no-as-needed

 This option affects ELF DT_NEEDED tags for dynamic libraries mentioned

-on the command line after the @option{--as-needed} option.  Normally,

+on the command line after the @option{--as-needed} option.  Normally

 the linker will add a DT_NEEDED tag for each dynamic library mentioned

 on the command line, regardless of whether the library is actually

-needed.  @option{--as-needed} causes a DT_NEEDED tag to only be emitted

-for a library that satisfies a symbol reference from regular objects

-which is undefined at the point that the library was linked, or, if

-the library is not found in the DT_NEEDED lists of other libraries

-linked up to that point, a reference from another dynamic library.

+needed or not.  @option{--as-needed} causes a DT_NEEDED tag to only be

+emitted for a library that satisfies an undefined symbol reference

+from a regular object file or, if the library is not found in the

+DT_NEEDED lists of other libraries linked up to that point, an

+undefined symbol reference from another dynamic library.

 @option{--no-as-needed} restores the default behaviour.

 @kindex --add-needed

 @kindex --no-add-needed

 @item --add-needed

 @itemx --no-add-needed

-This option affects the treatment of dynamic libraries from ELF

-DT_NEEDED tags in dynamic libraries mentioned on the command line after

-the @option{--no-add-needed} option.  Normally, the linker will add

-a DT_NEEDED tag for each dynamic library from DT_NEEDED tags.

-@option{--no-add-needed} causes DT_NEEDED tags will never be emitted

-for those libraries from DT_NEEDED tags. @option{--add-needed} restores

-the default behaviour.

+These two options have been deprecated because of the similarity of

+their names to the @option{--as-needed} and @option{--no-as-needed}

+options.  They have been replaced by @option{--copy-dt-needed-entries}

+and @option{--no-copy-dt-needed-entries}.

 @kindex -assert @var{keyword}

 @item -assert @var{keyword}

@@ -1253,6 +1250,29 @@ Section overlap is not usually checked f

 force checking in that case by using the @option{--check-sections}

 option.

+@kindex --copy-dt-needed-entries

+@kindex --no-copy-dt-needed-entries

+@item --copy-dt-needed-entries

+@itemx --no-copy-dt-needed-entries

+This option affects the treatment of dynamic libraries referred to 

+by DT_NEEDED tags @emph{inside} ELF dynamic libraries mentioned on the

+command line.  Normally the linker will add a DT_NEEDED tag to the

+output binary for each library mentioned in a DT_NEEDED tag in an

+input dynamic library.  With @option{--no-copy-dt-needed-entries}

+specified on the command line however any dynamic libraries that

+follow it will have their DT_NEEDED entries ignored.  The default

+behaviour can be restored with @option{--copy-dt-needed-entries}.

+

+This option also has an effect on the resolution of symbols in dynamic

+libraries.  With the default setting dynamic libraries mentioned on

+the command line will be recursively searched, following their

+DT_NEEDED tags to other libraries, in order to resolve symbols

+required by the output binary.  With

+@option{--no-copy-dt-needed-entries} specified however the searching

+of dynamic libraries that follow it will stop with the dynamic

+library itself.  No DT_NEEDED links will be traversed to resolve

+symbols.

+

 @cindex cross reference table

 @kindex --cref

 @item --cref

diff -rup ../binutils-2.20.51.0.2.original/ld/lexsup.c ./ld/lexsup.c

--- ../binutils-2.20.51.0.2.original/ld/lexsup.c	2009-11-05 17:42:00.000000000 +0000

+++ ./ld/lexsup.c	2009-11-05 17:45:22.000000000 +0000

@@ -125,10 +125,10 @@ enum option_values

   OPTION_SPLIT_BY_RELOC,

   OPTION_SPLIT_BY_FILE ,

   OPTION_WHOLE_ARCHIVE,

-  OPTION_ADD_NEEDED,

-  OPTION_NO_ADD_NEEDED,

-  OPTION_AS_NEEDED,

-  OPTION_NO_AS_NEEDED,

+  OPTION_ADD_DT_NEEDED_FOR_DYNAMIC,

+  OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC,

+  OPTION_ADD_DT_NEEDED_FOR_REGULAR,

+  OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR,

   OPTION_WRAP,

   OPTION_FORCE_EXE_SUFFIX,

   OPTION_GC_SECTIONS,

@@ -333,19 +333,22 @@ static const struct ld_option ld_options

      OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},

     '\0', NULL, N_("Reject input files whose architecture is unknown"),

     TWO_DASHES },

-  { {"add-needed", no_argument, NULL, OPTION_ADD_NEEDED},

-    '\0', NULL, N_("Set DT_NEEDED tags for DT_NEEDED entries in\n"

-		   "                                following dynamic libs"),

-    TWO_DASHES },

-  { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_NEEDED},

-    '\0', NULL, N_("Do not set DT_NEEDED tags for DT_NEEDED entries\n"

-		   "                                in following dynamic libs"),

-    TWO_DASHES },

-  { {"as-needed", no_argument, NULL, OPTION_AS_NEEDED},

+

+  /* The next two options are deprecated because of their similarity to

+     --as-needed and --no-as-needed.  They have been replaced by

+     --resolve-implicit-dynamic-symbols and

+     --no-resolve-implicit-dynamic-symbols.  */

+  { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},

+    '\0', NULL, NULL, NO_HELP },

+  { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},

+    '\0', NULL, NULL, NO_HELP },

+

+  { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR},

     '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"),

     TWO_DASHES },

-  { {"no-as-needed", no_argument, NULL, OPTION_NO_AS_NEEDED},

-    '\0', NULL, N_("Always set DT_NEEDED for following dynamic libs"),

+  { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR},

+    '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n"

+		   "                                the command line"),

     TWO_DASHES },

   { {"assert", required_argument, NULL, OPTION_ASSERT},

     '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH },

@@ -373,6 +376,15 @@ static const struct ld_option ld_options

   { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS},

     '\0', NULL, N_("Do not check section addresses for overlaps"),

     TWO_DASHES },

+  { {"copy-dt-needed-entries", no_argument, NULL,

+     OPTION_ADD_DT_NEEDED_FOR_DYNAMIC},

+    '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"),

+    TWO_DASHES },

+  { {"no-copy-dt-needed-entries", no_argument, NULL,

+     OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC},

+    '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"),

+    TWO_DASHES },

+

   { {"cref", no_argument, NULL, OPTION_CREF},

     '\0', NULL, N_("Output cross reference table"), TWO_DASHES },

   { {"defsym", required_argument, NULL, OPTION_DEFSYM},

@@ -1373,17 +1385,17 @@ parse_args (unsigned argc, char **argv)

 	case OPTION_WHOLE_ARCHIVE:

 	  whole_archive = TRUE;

 	  break;

-	case OPTION_ADD_NEEDED:

-	  add_needed = TRUE;

+	case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:

+	  add_DT_NEEDED_for_dynamic = TRUE;

 	  break;

-	case OPTION_NO_ADD_NEEDED:

-	  add_needed = FALSE;

+	case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:

+	  add_DT_NEEDED_for_dynamic = FALSE;

 	  break;

-	case OPTION_AS_NEEDED:

-	  as_needed = TRUE;

+	case OPTION_ADD_DT_NEEDED_FOR_REGULAR:

+	  add_DT_NEEDED_for_regular = TRUE;

 	  break;

-	case OPTION_NO_AS_NEEDED:

-	  as_needed = FALSE;

+	case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:

+	  add_DT_NEEDED_for_regular = FALSE;

 	  break;

 	case OPTION_WRAP:

 	  add_wrap (optarg);

diff -rup ../binutils-2.20.51.0.2.original/ld/NEWS ./ld/NEWS

--- ../binutils-2.20.51.0.2.original/ld/NEWS	2009-11-05 17:42:00.000000000 +0000

+++ ./ld/NEWS	2009-11-05 17:45:59.000000000 +0000

@@ -1,5 +1,8 @@

 -*- text -*-

+* --add-needed renamed to --copy-dt-needed-entries in order to avoid confusion

+  with --as-needed option.

+

 * Add support for the Renesas RX processor.

 Changes in 2.20: