/* Parse options for the GNU linker.
- Copyright (C) 1991-2015 Free Software Foundation, Inc.
+ Copyright (C) 1991-2016 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
{ {"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'},
{ {"undefined", required_argument, NULL, 'u'},
'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"),
TWO_DASHES },
+ { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL},
+ '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"),
+ TWO_DASHES },
{ {"unique", optional_argument, NULL, OPTION_UNIQUE},
'\0', N_("[=SECTION]"),
N_("Don't merge input [SECTION | orphan] sections"), 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 },
{ {"pop-state", no_argument, NULL, OPTION_POP_STATE},
'\0', NULL, N_("Pop state of flags governing input file handling"),
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:
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. */
break;
case OPTION_PLUGIN_OPT:
if (plugin_opt_plugin_arg (optarg))
- einfo(_("%P%F: bad -plugin-opt option\n"));
+ einfo (_("%P%F: bad -plugin-opt option\n"));
break;
#endif /* ENABLE_PLUGINS */
case 'q':
and will seg-fault the next time around. */
einfo(_("%P%F: unrecognised option: %s\n"), argv[optind]);
- link_info.relocatable = TRUE;
+ if (bfd_link_pic (&link_info))
+ einfo (_("%P%F: -r and %s may not be used together\n"),
+ bfd_link_dll (&link_info) ? "-shared" : "-pie");
+
+ link_info.type = type_relocatable;
config.build_constructors = FALSE;
config.magic_demand_paged = FALSE;
config.text_read_only = FALSE;
case OPTION_SHARED:
if (config.has_shared)
{
- link_info.shared = TRUE;
+ if (bfd_link_relocatable (&link_info))
+ einfo (_("%P%F: -r and -shared may not be used together\n"));
+
+ 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)
case OPTION_PIE:
if (config.has_shared)
{
- link_info.shared = TRUE;
- link_info.pie = TRUE;
+ if (bfd_link_relocatable (&link_info))
+ einfo (_("%P%F: -r and -pie may not be used together\n"));
+
+ link_info.type = type_pie;
}
else
einfo (_("%P%F: -pie not supported\n"));
link_info.task_link = TRUE;
/* Fall through - do an implied -r option. */
case OPTION_UR:
- link_info.relocatable = TRUE;
+ if (bfd_link_pic (&link_info))
+ einfo (_("%P%F: -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);
+ break;
case OPTION_UNIQUE:
if (optarg != NULL)
lang_add_unique (optarg);
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;
free (oldp);
}
break;
+
+ 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 (_("%P%F: 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;
}
- 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 (_("%P%F: -f may not be used without -shared\n"));
}
- if (! link_info.shared || 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)
lang_section_start (section, exp_intop (val), seg);
}
+static void
+elf_shlib_list_options (FILE *file)
+{
+ fprintf (file, _("\
+ --audit=AUDITLIB Specify a library to use for auditing\n"));
+ fprintf (file, _("\
+ -Bgroup Selects group name lookup rules for DSO\n"));
+ fprintf (file, _("\
+ --disable-new-dtags Disable new dynamic tags\n"));
+ fprintf (file, _("\
+ --enable-new-dtags Enable new dynamic tags\n"));
+ fprintf (file, _("\
+ --eh-frame-hdr 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"));
+ 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"));
+ fprintf (file, _("\
+ -z initfirst Mark DSO to be initialized first at runtime\n"));
+ fprintf (file, _("\
+ -z interpose Mark object to interpose all DSOs but executable\n"));
+ fprintf (file, _("\
+ -z lazy Mark object lazy runtime binding (default)\n"));
+ fprintf (file, _("\
+ -z loadfltr Mark object requiring immediate process\n"));
+ fprintf (file, _("\
+ -z nocopyreloc Don't create copy relocs\n"));
+ fprintf (file, _("\
+ -z nodefaultlib Mark object not to use default search paths\n"));
+ fprintf (file, _("\
+ -z nodelete Mark DSO non-deletable at runtime\n"));
+ fprintf (file, _("\
+ -z nodlopen Mark DSO not available to dlopen\n"));
+ fprintf (file, _("\
+ -z nodump Mark DSO not available to dldump\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"));
+ fprintf (file, _("\
+ -z relro Create RELRO program header\n"));
+ fprintf (file, _("\
+ -z norelro Don't create RELRO program header\n"));
+ fprintf (file, _("\
+ -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 stacksize=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"));
+}
+
+static void
+elf_static_list_options (FILE *file)
+{
+ fprintf (file, _("\
+ --build-id[=STYLE] Generate build ID note\n"));
+ 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"));
+ 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"));
+}
+
+static void
+elf_plt_unwind_list_options (FILE *file)
+{
+ fprintf (file, _("\
+ --ld-generated-unwind-info Generate exception handling info for PLT\n\
+ --no-ld-generated-unwind-info\n\
+ Don't generate exception handling info for PLT\n"));
+}
+
+static void
+ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib,
+ bfd_boolean plt_unwind)
+{
+ if (!elf)
+ return;
+ printf (_("ELF emulations:\n"));
+ if (plt_unwind)
+ elf_plt_unwind_list_options (file);
+ elf_static_list_options (file);
+ if (shlib)
+ elf_shlib_list_options (file);
+}
+
\f
/* Print help messages for the options. */
/* xgettext:c-format */
printf (_("%s: emulation specific options:\n"), program_name);
+ ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS,
+ ELF_PLT_UNWIND_LIST_OPTIONS);
ldemul_list_emulation_options (stdout);
printf ("\n");
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