/* Parse options for the GNU linker.
- Copyright (C) 1991-2015 Free Software Foundation, Inc.
+ Copyright (C) 1991-2018 Free Software Foundation, Inc.
This file is part of the GNU Binutils.
enum control_enum {
/* Use one dash before long option name. */
- ONE_DASH,
+ ONE_DASH = 1,
/* Use two dashes before long option name. */
- TWO_DASHES,
+ TWO_DASHES = 2,
/* Only accept two dashes before the long option name.
This is an overloading of the use of this enum, since originally it
was only intended to tell the --help display function how to display
'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
{ {"dp", no_argument, NULL, 'd'},
'\0', NULL, NULL, ONE_DASH },
+ { {"force-group-allocation", no_argument, NULL,
+ OPTION_FORCE_GROUP_ALLOCATION},
+ '\0', NULL, N_("Force group members out of groups"), TWO_DASHES },
{ {"entry", required_argument, NULL, 'e'},
'e', N_("ADDRESS"), N_("Set start address"), TWO_DASHES },
{ {"export-dynamic", no_argument, NULL, OPTION_EXPORT_DYNAMIC},
{ {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER},
'I', N_("PROGRAM"), N_("Set PROGRAM as the dynamic linker to use"),
TWO_DASHES },
+ { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER},
+ '\0', NULL, N_("Produce an executable with no program interpreter header"),
+ TWO_DASHES },
{ {"library", required_argument, NULL, 'l'},
'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES },
{ {"library-path", required_argument, NULL, 'L'},
'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
{ {NULL, required_argument, NULL, '\0'},
'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
{ {"plugin", required_argument, NULL, OPTION_PLUGIN},
'\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
{ {"no-print-gc-sections", no_argument, NULL, OPTION_NO_PRINT_GC_SECTIONS},
'\0', NULL, N_("Do not list removed unused sections"),
TWO_DASHES },
+ { {"gc-keep-exported", no_argument, NULL, OPTION_GC_KEEP_EXPORTED},
+ '\0', NULL, N_("Keep exported symbols when removing unused sections"),
+ TWO_DASHES },
{ {"hash-size=<NUMBER>", required_argument, NULL, OPTION_HASH_SIZE},
'\0', NULL, N_("Set default hash table size close to <NUMBER>"),
TWO_DASHES },
'\0', NULL, N_("Warn if the multiple GP values are used"), TWO_DASHES },
{ {"warn-once", no_argument, NULL, OPTION_WARN_ONCE},
'\0', NULL, N_("Warn only once per undefined symbol"), TWO_DASHES },
- { {"warn-orphan", no_argument, NULL, OPTION_WARN_ORPHAN},
- '\0', NULL, N_("Warn if any orphan sections are encountered"), TWO_DASHES },
- { {"no-warn-orphan", no_argument, NULL, OPTION_NO_WARN_ORPHAN},
- '\0', NULL, N_("Do not warn if orphan sections are encountered (default)"), TWO_DASHES },
{ {"warn-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
'\0', NULL, N_("Warn if start of section changes due to alignment"),
TWO_DASHES },
TWO_DASHES },
{ {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE},
'\0', NULL, N_("Report target memory usage"), TWO_DASHES },
+ { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING},
+ '\0', N_("=MODE"), N_("Control how orphan sections are handled."),
+ TWO_DASHES },
};
#define OPTION_COUNT ARRAY_SIZE (ld_options)
switch (optc)
{
case '?':
- einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
+ {
+ /* If the last word on the command line is an option that
+ requires an argument, getopt will refuse to recognise it.
+ Try to catch such options here and issue a more helpful
+ error message than just "unrecognized option". */
+ int opt;
+
+ for (opt = ARRAY_SIZE (ld_options); opt--;)
+ if (ld_options[opt].opt.has_arg == required_argument
+ /* FIXME: There are a few short options that do not
+ have long equivalents, but which require arguments.
+ We should handle them too. */
+ && ld_options[opt].opt.name != NULL
+ && strcmp (argv[last_optind] + ld_options[opt].control, ld_options[opt].opt.name) == 0)
+ {
+ einfo (_("%P: %s: missing argument\n"), argv[last_optind]);
+ break;
+ }
+
+ if (opt == -1)
+ einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
+ }
/* Fall through. */
default:
- einfo (_("%P%F: use the --help option for usage information\n"));
+ einfo (_("%F%P: use the --help option for usage information\n"));
+ break;
case 1: /* File name. */
lang_add_input_file (optarg, lang_input_file_is_file_enum, NULL);
|| strcmp (optarg, "default") == 0)
input_flags.dynamic = TRUE;
else
- einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
+ einfo (_("%F%P: unrecognized -a option `%s'\n"), optarg);
break;
case OPTION_ASSERT:
/* FIXME: We just ignore these, but we should handle them. */
else if (strcmp (optarg, "pure-text") == 0)
;
else
- einfo (_("%P%F: unrecognized -assert option `%s'\n"), optarg);
+ einfo (_("%F%P: unrecognized -assert option `%s'\n"), optarg);
break;
case 'A':
ldfile_add_arch (optarg);
case 'd':
command_line.force_common_definition = TRUE;
break;
+ case OPTION_FORCE_GROUP_ALLOCATION:
+ command_line.force_group_allocation = TRUE;
+ break;
case OPTION_DEFSYM:
lex_string = optarg;
lex_redirect (optarg, "--defsym", ++defsym_count);
case 'I': /* Used on Solaris. */
case OPTION_DYNAMIC_LINKER:
command_line.interpreter = optarg;
+ link_info.nointerp = 0;
+ break;
+ case OPTION_NO_DYNAMIC_LINKER:
+ link_info.nointerp = 1;
break;
case OPTION_SYSROOT:
/* Already handled in ldmain.c. */
if (command_line.auxiliary_filters == NULL)
{
command_line.auxiliary_filters = (char **)
- xmalloc (2 * sizeof (char *));
+ xmalloc (2 * sizeof (char *));
command_line.auxiliary_filters[0] = optarg;
command_line.auxiliary_filters[1] = NULL;
}
for (p = command_line.auxiliary_filters; *p != NULL; p++)
++c;
command_line.auxiliary_filters = (char **)
- xrealloc (command_line.auxiliary_filters,
- (c + 2) * sizeof (char *));
+ xrealloc (command_line.auxiliary_filters,
+ (c + 2) * sizeof (char *));
command_line.auxiliary_filters[c] = optarg;
command_line.auxiliary_filters[c + 1] = NULL;
}
char *end;
g_switch_value = strtoul (optarg, &end, 0);
if (*end)
- einfo (_("%P%F: invalid number `%s'\n"), optarg);
+ einfo (_("%F%P: invalid number `%s'\n"), optarg);
}
break;
case 'g':
case OPTION_PRINT_GC_SECTIONS:
link_info.print_gc_sections = TRUE;
break;
+ case OPTION_GC_KEEP_EXPORTED:
+ link_info.gc_keep_exported = TRUE;
+ break;
case OPTION_HELP:
help ();
xexit (0);
input_flags.dynamic = FALSE;
break;
case OPTION_NO_DEFINE_COMMON:
- command_line.inhibit_common_definition = TRUE;
+ link_info.inhibit_common_definition = TRUE;
break;
case OPTION_NO_DEMANGLE:
demangling = FALSE;
link_info.unresolved_syms_in_shared_libs
= how_to_report_unresolved_symbols;
}
- else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
+ else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
{
link_info.unresolved_syms_in_objects
= how_to_report_unresolved_symbols;
link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
}
else
- einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
+ einfo (_("%F%P: bad --unresolved-symbols option: %s\n"), optarg);
break;
case OPTION_WARN_UNRESOLVED_SYMBOLS:
how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
case OPTION_OFORMAT:
lang_add_output_format (optarg, NULL, NULL, 0);
break;
+ case OPTION_OUT_IMPLIB:
+ command_line.out_implib_filename = xstrdup (optarg);
+ break;
case OPTION_PRINT_SYSROOT:
if (*ld_sysroot)
puts (ld_sysroot);
break;
case OPTION_PLUGIN_OPT:
if (plugin_opt_plugin_arg (optarg))
- einfo(_("%P%F: bad -plugin-opt option\n"));
+ einfo (_("%F%P: bad -plugin-opt option\n"));
break;
#endif /* ENABLE_PLUGINS */
case 'q':
an error message here. We cannot just make this a warning,
increment optind, and continue because getopt is too confused
and will seg-fault the next time around. */
- einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]);
+ einfo(_("%F%P: unrecognised option: %s\n"), argv[optind]);
+
+ if (bfd_link_pic (&link_info))
+ einfo (_("%F%P: -r and %s may not be used together\n"),
+ bfd_link_dll (&link_info) ? "-shared" : "-pie");
- link_info.relocatable = TRUE;
+ link_info.type = type_relocatable;
config.build_constructors = FALSE;
config.magic_demand_paged = FALSE;
config.text_read_only = FALSE;
char *buf;
buf = (char *) xmalloc (strlen (command_line.rpath_link)
- + strlen (optarg)
- + 2);
+ + strlen (optarg)
+ + 2);
sprintf (buf, "%s%c%s", command_line.rpath_link,
config.rpath_separator, optarg);
free (command_line.rpath_link);
case OPTION_SHARED:
if (config.has_shared)
{
- link_info.shared = TRUE;
+ if (bfd_link_relocatable (&link_info))
+ einfo (_("%F%P: -r and %s may not be used together\n"),
+ "-shared");
+
+ link_info.type = type_dll;
/* When creating a shared library, the default
behaviour is to ignore any unresolved references. */
if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
}
else
- einfo (_("%P%F: -shared not supported\n"));
+ einfo (_("%F%P: -shared not supported\n"));
break;
case OPTION_PIE:
if (config.has_shared)
{
- link_info.shared = TRUE;
- link_info.pie = TRUE;
+ if (bfd_link_relocatable (&link_info))
+ einfo (_("%F%P: -r and %s may not be used together\n"), "-pie");
+
+ link_info.type = type_pie;
}
else
- einfo (_("%P%F: -pie not supported\n"));
+ einfo (_("%F%P: -pie not supported\n"));
break;
case 'h': /* Used on Solaris. */
case OPTION_SONAME:
case OPTION_SORT_COMMON:
if (optarg == NULL
|| strcmp (optarg, N_("descending")) == 0)
- config.sort_common = sort_descending;
- else if (strcmp (optarg, N_("ascending")) == 0)
+ config.sort_common = sort_descending;
+ else if (strcmp (optarg, N_("ascending")) == 0)
config.sort_common = sort_ascending;
else
- einfo (_("%P%F: invalid common section sorting option: %s\n"),
+ einfo (_("%F%P: invalid common section sorting option: %s\n"),
optarg);
break;
case OPTION_SORT_SECTION:
else if (strcmp (optarg, N_("alignment")) == 0)
sort_section = by_alignment;
else
- einfo (_("%P%F: invalid section sorting option: %s\n"),
+ einfo (_("%F%P: invalid section sorting option: %s\n"),
optarg);
break;
case OPTION_STATS:
/* Check for <something>=<somthing>... */
optarg2 = strchr (optarg, '=');
if (optarg2 == NULL)
- einfo (_("%P%F: invalid argument to option"
+ einfo (_("%F%P: invalid argument to option"
" \"--section-start\"\n"));
optarg2++;
/* So far so good. Are all the args present? */
if ((*optarg == '\0') || (*optarg2 == '\0'))
- einfo (_("%P%F: missing argument(s) to option"
+ einfo (_("%F%P: missing argument(s) to option"
" \"--section-start\"\n"));
/* We must copy the section name as set_section_start
break;
case OPTION_TASK_LINK:
link_info.task_link = TRUE;
- /* Fall through - do an implied -r option. */
+ /* Fall through. */
case OPTION_UR:
- link_info.relocatable = TRUE;
+ if (bfd_link_pic (&link_info))
+ einfo (_("%F%P: -r and %s may not be used together\n"),
+ bfd_link_dll (&link_info) ? "-shared" : "-pie");
+
+ link_info.type = type_relocatable;
config.build_constructors = TRUE;
config.magic_demand_paged = FALSE;
config.text_read_only = FALSE;
case 'u':
ldlang_add_undef (optarg, TRUE);
break;
- case OPTION_REQUIRE_DEFINED_SYMBOL:
- ldlang_add_require_defined (optarg);
+ case OPTION_REQUIRE_DEFINED_SYMBOL:
+ ldlang_add_require_defined (optarg);
break;
case OPTION_UNIQUE:
if (optarg != NULL)
char *end;
int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
if (*end)
- einfo (_("%P%F: invalid number `%s'\n"), optarg);
+ einfo (_("%F%P: invalid number `%s'\n"), optarg);
#ifdef ENABLE_PLUGINS
report_plugin_symbols = level > 1;
#endif /* ENABLE_PLUGINS */
case OPTION_WARN_ONCE:
config.warn_once = TRUE;
break;
- case OPTION_WARN_ORPHAN:
- config.warn_orphan = TRUE;
- break;
- case OPTION_NO_WARN_ORPHAN:
- config.warn_orphan = FALSE;
- break;
case OPTION_WARN_SECTION_ALIGN:
config.warn_section_align = TRUE;
break;
break;
case ')':
if (! ingroup)
- einfo (_("%P%F: group ended before it began (--help for usage)\n"));
+ einfo (_("%F%P: group ended before it began (--help for usage)\n"));
lang_leave_group ();
ingroup--;
config.hash_table_size = 1021;
break;
- case OPTION_HASH_SIZE:
+ case OPTION_HASH_SIZE:
{
bfd_size_type new_size;
- new_size = strtoul (optarg, NULL, 0);
- if (new_size)
- config.hash_table_size = new_size;
- else
- einfo (_("%P%X: --hash-size needs a numeric argument\n"));
- }
- break;
+ new_size = strtoul (optarg, NULL, 0);
+ if (new_size)
+ config.hash_table_size = new_size;
+ else
+ einfo (_("%X%P: --hash-size needs a numeric argument\n"));
+ }
+ break;
case OPTION_PUSH_STATE:
input_flags.pushed = xmemdup (&input_flags,
case OPTION_POP_STATE:
if (input_flags.pushed == NULL)
- einfo (_("%P%F: no state pushed before popping\n"));
+ einfo (_("%F%P: no state pushed before popping\n"));
else
{
struct lang_input_statement_flags *oldp = input_flags.pushed;
case OPTION_PRINT_MEMORY_USAGE:
command_line.print_memory_usage = TRUE;
break;
+
+ case OPTION_ORPHAN_HANDLING:
+ if (strcasecmp (optarg, "place") == 0)
+ config.orphan_handling = orphan_handling_place;
+ else if (strcasecmp (optarg, "warn") == 0)
+ config.orphan_handling = orphan_handling_warn;
+ else if (strcasecmp (optarg, "error") == 0)
+ config.orphan_handling = orphan_handling_error;
+ else if (strcasecmp (optarg, "discard") == 0)
+ config.orphan_handling = orphan_handling_discard;
+ else
+ einfo (_("%F%P: invalid argument to option"
+ " \"--orphan-handling\"\n"));
+ break;
}
}
/* FIXME: Should we allow emulations a chance to set this ? */
link_info.unresolved_syms_in_shared_libs = how_to_report_unresolved_symbols;
- if (link_info.relocatable)
- {
- if (command_line.check_section_addresses < 0)
- command_line.check_section_addresses = 0;
- if (link_info.shared)
- einfo (_("%P%F: -r and -shared may not be used together\n"));
- }
+ if (bfd_link_relocatable (&link_info)
+ && command_line.check_section_addresses < 0)
+ command_line.check_section_addresses = 0;
/* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
--dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
--dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
- for shared libraries. -Bsymbolic overrides all others and vice
- versa. */
+ for PIC outputs. -Bsymbolic overrides all others and vice versa. */
switch (command_line.symbolic)
{
case symbolic_unset:
break;
case symbolic:
- /* -Bsymbolic is for shared library only. */
- if (link_info.shared)
+ /* -Bsymbolic is for PIC output only. */
+ if (bfd_link_pic (&link_info))
{
link_info.symbolic = TRUE;
/* Should we free the unused memory? */
}
break;
case symbolic_functions:
- /* -Bsymbolic-functions is for shared library only. */
- if (link_info.shared)
+ /* -Bsymbolic-functions is for PIC output only. */
+ if (bfd_link_pic (&link_info))
command_line.dynamic_list = dynamic_list_data;
break;
}
break;
case dynamic_list_data:
link_info.dynamic_data = TRUE;
+ /* Fall through. */
case dynamic_list:
link_info.dynamic = TRUE;
break;
}
- if (! link_info.shared)
+ if (!bfd_link_dll (&link_info))
{
if (command_line.filter_shlib)
- einfo (_("%P%F: -F may not be used without -shared\n"));
+ einfo (_("%F%P: -F may not be used without -shared\n"));
if (command_line.auxiliary_filters)
- einfo (_("%P%F: -f may not be used without -shared\n"));
+ einfo (_("%F%P: -f may not be used without -shared\n"));
}
- if ((! link_info.shared && ! link_info.relocatable) || link_info.pie)
- link_info.executable = TRUE;
-
/* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
don't see how else this can be handled, since in this case we
must preserve all externally visible symbols. */
- if (link_info.relocatable && link_info.strip == strip_all)
+ if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all)
{
link_info.strip = strip_debugger;
if (link_info.discard == discard_sec_merge)
const char *end;
bfd_vma val = bfd_scan_vma (valstr, &end, 16);
if (*end)
- einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
+ einfo (_("%F%P: invalid hex number `%s'\n"), valstr);
lang_section_start (sect, exp_intop (val), NULL);
}
bfd_vma val = bfd_scan_vma (valstr, &end, 16);
if (*end)
- einfo (_("%P%F: invalid hex number `%s'\n"), valstr);
+ einfo (_("%F%P: invalid hex number `%s'\n"), valstr);
/* If we already have an entry for this segment, update the existing
value. */
name = section + 1;
if (strcmp (seg->name, name) == 0)
{
seg->value = val;
+ lang_section_start (section, exp_intop (val), seg);
return;
}
/* There was no existing value so we must create a new segment
fprintf (file, _("\
--eh-frame-hdr Create .eh_frame_hdr section\n"));
fprintf (file, _("\
+ --no-eh-frame-hdr Do not create .eh_frame_hdr section\n"));
+ fprintf (file, _("\
--exclude-libs=LIBS Make all symbols in LIBS hidden\n"));
fprintf (file, _("\
--hash-style=STYLE Set hash style to sysv, gnu or both\n"));
fprintf (file, _("\
-P AUDITLIB, --depaudit=AUDITLIB\n" "\
- Specify a library to use for auditing dependencies\n"));
+ Specify a library to use for auditing dependencies\n"));
fprintf (file, _("\
-z combreloc Merge dynamic relocs into one section and sort\n"));
fprintf (file, _("\
-z nocombreloc Don't merge dynamic relocs into one section\n"));
fprintf (file, _("\
-z global Make symbols in DSO available for subsequently\n\
- loaded objects\n"));
+ loaded objects\n"));
fprintf (file, _("\
-z initfirst Mark DSO to be initialized first at runtime\n"));
fprintf (file, _("\
-z now Mark object non-lazy runtime binding\n"));
fprintf (file, _("\
-z origin Mark object requiring immediate $ORIGIN\n\
- processing at runtime\n"));
+ processing at runtime\n"));
+#if DEFAULT_LD_Z_RELRO
fprintf (file, _("\
- -z relro Create RELRO program header\n"));
+ -z relro Create RELRO program header (default)\n"));
fprintf (file, _("\
-z norelro Don't create RELRO program header\n"));
+#else
+ fprintf (file, _("\
+ -z relro Create RELRO program header\n"));
+ fprintf (file, _("\
+ -z norelro Don't create RELRO program header (default)\n"));
+#endif
+ fprintf (file, _("\
+ -z separate-code Create separate code program header\n"));
+ fprintf (file, _("\
+ -z noseparate-code Don't create separate code program header (default)\n"));
fprintf (file, _("\
- -z stacksize=SIZE Set size of stack segment\n"));
+ -z common Generate common symbols with STT_COMMON type\n"));
+ fprintf (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, _("\
fprintf (file, _("\
--compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\
Compress DWARF debug sections using zlib\n"));
+#ifdef DEFAULT_FLAG_COMPRESS_DEBUG
+ fprintf (file, _("\
+ Default: zlib-gabi\n"));
+#else
+ fprintf (file, _("\
+ Default: none\n"));
+#endif
fprintf (file, _("\
-z common-page-size=SIZE Set common page size to SIZE\n"));
fprintf (file, _("\
-z max-page-size=SIZE Set maximum page size to SIZE\n"));
fprintf (file, _("\
- -z defs Report unresolved symbols in object files.\n"));
+ -z defs Report unresolved symbols in object files\n"));
fprintf (file, _("\
-z muldefs Allow multiple definitions\n"));
fprintf (file, _("\
-z execstack Mark executable as requiring executable stack\n"));
fprintf (file, _("\
-z noexecstack Mark executable as not requiring executable stack\n"));
+ fprintf (file, _("\
+ -z globalaudit Mark executable requiring global auditing\n"));
}
static void
elf_plt_unwind_list_options (FILE *file)
{
fprintf (file, _("\
- --ld-generated-unwind-info Generate exception handling info for PLT\n\
+ --ld-generated-unwind-info Generate exception handling info for PLT\n"));
+ fprintf (file, _("\
--no-ld-generated-unwind-info\n\
Don't generate exception handling info for PLT\n"));
}