Do without ld ENABLE_PLUGINS
[deliverable/binutils-gdb.git] / ld / lexsup.c
index fe9526b527197e6d2adbb3026367e5ed0d3f634f..65a945318520ce840b2bd27afab761c017d8a267 100644 (file)
@@ -39,9 +39,9 @@
 #include "ldver.h"
 #include "ldemul.h"
 #include "demangle.h"
-#ifdef ENABLE_PLUGINS
+#if BFD_SUPPORTS_PLUGINS
 #include "plugin.h"
-#endif /* ENABLE_PLUGINS */
+#endif /* BFD_SUPPORTS_PLUGINS */
 
 #ifndef PATH_SEPARATOR
 #if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
@@ -174,7 +174,7 @@ static const struct ld_option ld_options[] =
     'O', NULL, N_("Optimize output file"), ONE_DASH },
   { {"out-implib", required_argument, NULL, OPTION_OUT_IMPLIB},
     '\0', N_("FILE"), N_("Generate import library"), TWO_DASHES },
-#ifdef ENABLE_PLUGINS
+#if BFD_SUPPORTS_PLUGINS
   { {"plugin", required_argument, NULL, OPTION_PLUGIN},
     '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
   { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
@@ -185,7 +185,12 @@ static const struct ld_option ld_options[] =
   { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
     '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
     ONE_DASH },
-#endif /* ENABLE_PLUGINS */
+#else
+  { {"plugin", required_argument, NULL, OPTION_IGNORE},
+    '\0', N_("PLUGIN"), N_("Load named plugin (ignored)"), ONE_DASH },
+  { {"plugin-opt", required_argument, NULL, OPTION_IGNORE},
+    '\0', N_("ARG"), N_("Send arg to last-loaded plugin (ignored)"), ONE_DASH },
+#endif /* BFD_SUPPORTS_PLUGINS */
   { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE},
     '\0', NULL, N_("Ignored for GCC linker option compatibility"),
     ONE_DASH },
@@ -359,7 +364,7 @@ static const struct ld_option ld_options[] =
   { {"init", required_argument, NULL, OPTION_INIT},
     '\0', N_("SYMBOL"), N_("Call SYMBOL at load-time"), ONE_DASH },
   { {"Map", required_argument, NULL, OPTION_MAP},
-    '\0', N_("FILE"), N_("Write a map file"), ONE_DASH },
+    '\0', N_("FILE/DIR"), N_("Write a linker map to FILE or DIR/<outputname>.map"), ONE_DASH },
   { {"no-define-common", no_argument, NULL, OPTION_NO_DEFINE_COMMON},
     '\0', NULL, N_("Do not define Common storage"), TWO_DASHES },
   { {"no-demangle", no_argument, NULL, OPTION_NO_DEMANGLE },
@@ -504,6 +509,10 @@ static const struct ld_option ld_options[] =
     '\0', NULL, N_("Use C++ typeinfo dynamic list"), TWO_DASHES },
   { {"dynamic-list", required_argument, NULL, OPTION_DYNAMIC_LIST},
     '\0', N_("FILE"), N_("Read dynamic list"), TWO_DASHES },
+  { {"export-dynamic-symbol", required_argument, NULL, OPTION_EXPORT_DYNAMIC_SYMBOL},
+    '\0', N_("SYMBOL"), N_("Export the specified symbol"), EXACTLY_TWO_DASHES },
+  { {"export-dynamic-symbol-list", required_argument, NULL, OPTION_EXPORT_DYNAMIC_SYMBOL_LIST},
+    '\0', N_("FILE"), N_("Read export dynamic symbol list"), EXACTLY_TWO_DASHES },
   { {"warn-common", no_argument, NULL, OPTION_WARN_COMMON},
     '\0', NULL, N_("Warn about duplicate common symbols"), TWO_DASHES },
   { {"warn-constructors", no_argument, NULL, OPTION_WARN_CONSTRUCTORS},
@@ -516,9 +525,16 @@ static const struct ld_option ld_options[] =
   { {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
     '\0', NULL, N_("Warn if start of section changes due to alignment"),
     TWO_DASHES },
-  { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
-    '\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
+  { {"warn-textrel", no_argument, NULL, OPTION_WARN_TEXTREL},
+    '\0', NULL,
+#if DEFAULT_LD_TEXTREL_CHECK_WARNING
+    N_("Warn if outpout has DT_TEXTREL (default)"),
+#else
+    N_("Warn if outpout has DT_TEXTREL"),
+#endif
     TWO_DASHES },
+  { {"warn-shared-textrel", no_argument, NULL, OPTION_WARN_TEXTREL},
+    '\0', NULL, NULL, NO_HELP },
   { {"warn-alternate-em", no_argument, NULL, OPTION_WARN_ALTERNATE_EM},
     '\0', NULL, N_("Warn if an object has alternate ELF machine code"),
     TWO_DASHES },
@@ -581,6 +597,7 @@ parse_args (unsigned argc, char **argv)
     dynamic_list_data,
     dynamic_list
   } opt_dynamic_list = dynamic_list_unset;
+  struct bfd_elf_dynamic_list *export_list = NULL;
 
   shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
   longopts = (struct option *)
@@ -1049,7 +1066,7 @@ parse_args (unsigned argc, char **argv)
        case OPTION_PRINT_OUTPUT_FORMAT:
          command_line.print_output_format = TRUE;
          break;
-#ifdef ENABLE_PLUGINS
+#if BFD_SUPPORTS_PLUGINS
        case OPTION_PLUGIN:
          plugin_opt_plugin (optarg);
          break;
@@ -1057,7 +1074,7 @@ parse_args (unsigned argc, char **argv)
          if (plugin_opt_plugin_arg (optarg))
            einfo (_("%F%P: bad -plugin-opt option\n"));
          break;
-#endif /* ENABLE_PLUGINS */
+#endif /* BFD_SUPPORTS_PLUGINS */
        case 'q':
          link_info.emitrelocations = TRUE;
          break;
@@ -1351,9 +1368,9 @@ parse_args (unsigned argc, char **argv)
              int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
              if (*end)
                einfo (_("%F%P: invalid number `%s'\n"), optarg);
-#ifdef ENABLE_PLUGINS
+#if BFD_SUPPORTS_PLUGINS
              report_plugin_symbols = level > 1;
-#endif /* ENABLE_PLUGINS */
+#endif /* BFD_SUPPORTS_PLUGINS */
            }
          break;
        case 'v':
@@ -1390,22 +1407,16 @@ parse_args (unsigned argc, char **argv)
          break;
        case OPTION_DYNAMIC_LIST_DATA:
          opt_dynamic_list = dynamic_list_data;
-         if (opt_symbolic == symbolic)
-           opt_symbolic = symbolic_unset;
          break;
        case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
          lang_append_dynamic_list_cpp_typeinfo ();
          if (opt_dynamic_list != dynamic_list_data)
            opt_dynamic_list = dynamic_list;
-         if (opt_symbolic == symbolic)
-           opt_symbolic = symbolic_unset;
          break;
        case OPTION_DYNAMIC_LIST_CPP_NEW:
          lang_append_dynamic_list_cpp_new ();
          if (opt_dynamic_list != dynamic_list_data)
            opt_dynamic_list = dynamic_list;
-         if (opt_symbolic == symbolic)
-           opt_symbolic = symbolic_unset;
          break;
        case OPTION_DYNAMIC_LIST:
          /* This option indicates a small script that only specifies
@@ -1418,12 +1429,34 @@ parse_args (unsigned argc, char **argv)
            ldfile_open_command_file (optarg);
            saved_script_handle = hold_script_handle;
            parser_input = input_dynamic_list;
+           current_dynamic_list_p = &link_info.dynamic_list;
            yyparse ();
          }
          if (opt_dynamic_list != dynamic_list_data)
            opt_dynamic_list = dynamic_list;
-         if (opt_symbolic == symbolic)
-           opt_symbolic = symbolic_unset;
+         break;
+       case OPTION_EXPORT_DYNAMIC_SYMBOL:
+         {
+           struct bfd_elf_version_expr *expr
+             = lang_new_vers_pattern (NULL, xstrdup (optarg), NULL,
+                                      FALSE);
+           lang_append_dynamic_list (&export_list, expr);
+          }
+         break;
+       case OPTION_EXPORT_DYNAMIC_SYMBOL_LIST:
+         /* This option indicates a small script that only specifies
+            an export list.  Read it, but don't assume that we've
+            seen a linker script.  */
+         {
+           FILE *hold_script_handle;
+
+           hold_script_handle = saved_script_handle;
+           ldfile_open_command_file (optarg);
+           saved_script_handle = hold_script_handle;
+           parser_input = input_dynamic_list;
+           current_dynamic_list_p = &export_list;
+           yyparse ();
+         }
          break;
        case OPTION_WARN_COMMON:
          config.warn_common = TRUE;
@@ -1446,8 +1479,8 @@ parse_args (unsigned argc, char **argv)
        case OPTION_WARN_SECTION_ALIGN:
          config.warn_section_align = TRUE;
          break;
-       case OPTION_WARN_SHARED_TEXTREL:
-         link_info.warn_shared_textrel = TRUE;
+       case OPTION_WARN_TEXTREL:
+         link_info.textrel_check = textrel_check_warning;
          break;
        case OPTION_WARN_ALTERNATE_EM:
          link_info.warn_alternate_em = TRUE;
@@ -1601,6 +1634,41 @@ parse_args (unsigned argc, char **argv)
        }
     }
 
+  /* Run a couple of checks on the map filename.  */
+  if (config.map_filename)
+    {
+      if (config.map_filename[0] == 0)
+       {
+         einfo (_("%P: no file/directory name provided for map output; ignored\n"));
+         config.map_filename = NULL;
+       }
+      else
+       {
+         struct stat s;
+
+         /* If the map filename is actually a directory then create
+            a file inside it, based upon the output filename.  */
+         if (stat (config.map_filename, &s) >= 0
+             && S_ISDIR (s.st_mode))
+           {
+             char * new_name;
+
+             /* FIXME: This is a (trivial) memory leak.  */
+             if (asprintf (&new_name, "%s/%s.map",
+                           config.map_filename, output_filename) < 0)
+               {
+                 /* If this alloc fails then something is probably very
+                    wrong.  Better to halt now rather than continue on
+                    into more problems.  */
+                 einfo (_("%P%F: cannot create name for linker map file: %E\n"));
+                 new_name = NULL;
+               }
+
+             config.map_filename = new_name;
+           }
+       }
+    }
+
   if (command_line.soname && command_line.soname[0] == '\0')
     {
       einfo (_("%P: SONAME must not be empty string; ignored\n"));
@@ -1632,6 +1700,62 @@ parse_args (unsigned argc, char **argv)
       && command_line.check_section_addresses < 0)
     command_line.check_section_addresses = 0;
 
+  if (export_list)
+    {
+      struct bfd_elf_version_expr *head = export_list->head.list;
+      struct bfd_elf_version_expr *next;
+
+      /* For --export-dynamic-symbol[-list]:
+        1. When building executable, treat like --dynamic-list.
+        2. When building shared object:
+           a. If -Bsymbolic or --dynamic-list are used, treat like
+              --dynamic-list.
+           b. Otherwise, ignored.
+       */
+      if (!bfd_link_relocatable (&link_info)
+         && (bfd_link_executable (&link_info)
+             || opt_symbolic != symbolic_unset
+             || opt_dynamic_list != dynamic_list_unset))
+       {
+         /* Append the export list to link_info.dynamic_list.  */
+         if (link_info.dynamic_list)
+           {
+             for (next = head; next->next != NULL; next = next->next)
+               ;
+             next->next = link_info.dynamic_list->head.list;
+             link_info.dynamic_list->head.list = head;
+           }
+         else
+           link_info.dynamic_list = export_list;
+
+         if (opt_dynamic_list != dynamic_list_data)
+           opt_dynamic_list = dynamic_list;
+       }
+      else
+       {
+         /* Free the export list.  */
+         for (; head->next != NULL; head = next)
+           {
+             next = head->next;
+             free (head);
+           }
+         free (export_list);
+       }
+    }
+
+  switch (opt_dynamic_list)
+    {
+    case dynamic_list_unset:
+      break;
+    case dynamic_list_data:
+      link_info.dynamic_data = TRUE;
+      /* Fall through.  */
+    case dynamic_list:
+      link_info.dynamic = TRUE;
+      opt_symbolic = symbolic_unset;
+      break;
+    }
+
   /* -Bsymbolic and -Bsymbols-functions are for shared library output.  */
   if (bfd_link_dll (&link_info))
     switch (opt_symbolic)
@@ -1651,25 +1775,13 @@ parse_args (unsigned argc, char **argv)
            free (link_info.dynamic_list);
            link_info.dynamic_list = NULL;
          }
-       opt_dynamic_list = dynamic_list_unset;
        break;
       case symbolic_functions:
-       opt_dynamic_list = dynamic_list_data;
+       link_info.dynamic = TRUE;
+       link_info.dynamic_data = TRUE;
        break;
       }
 
-  switch (opt_dynamic_list)
-    {
-    case dynamic_list_unset:
-      break;
-    case dynamic_list_data:
-      link_info.dynamic_data = TRUE;
-      /* Fall through.  */
-    case dynamic_list:
-      link_info.dynamic = TRUE;
-      break;
-    }
-
   if (!bfd_link_dll (&link_info))
     {
       if (command_line.filter_shlib)
@@ -1853,12 +1965,26 @@ elf_shlib_list_options (FILE *file)
   -z nocommon                 Generate common symbols with STT_OBJECT type\n"));
   fprintf (file, _("\
   -z stack-size=SIZE          Set size of stack segment\n"));
-  fprintf (file, _("\
-  -z text                     Treat DT_TEXTREL in shared object as error\n"));
-  fprintf (file, _("\
-  -z notext                   Don't treat DT_TEXTREL in shared object as error\n"));
-  fprintf (file, _("\
-  -z textoff                  Don't treat DT_TEXTREL in shared object as error\n"));
+  if (link_info.textrel_check == textrel_check_error)
+    fprintf (file, _("\
+  -z text                     Treat DT_TEXTREL in output as error (default)\n"));
+  else
+    fprintf (file, _("\
+  -z text                     Treat DT_TEXTREL in output as error\n"));
+  if (link_info.textrel_check == textrel_check_none)
+    {
+      fprintf (file, _("\
+  -z notext                   Don't treat DT_TEXTREL in output as error (default)\n"));
+      fprintf (file, _("\
+  -z textoff                  Don't treat DT_TEXTREL in output as error (default)\n"));
+    }
+  else
+    {
+      fprintf (file, _("\
+  -z notext                   Don't treat DT_TEXTREL in output as error\n"));
+      fprintf (file, _("\
+  -z textoff                  Don't treat DT_TEXTREL in output as error\n"));
+    }
 }
 
 static void
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