/* Parse options for the GNU linker.
- Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
- 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
- Free Software Foundation, Inc.
+ Copyright (C) 1991-2014 Free Software Foundation, Inc.
This file is part of the GNU Binutils.
#include "ldver.h"
#include "ldemul.h"
#include "demangle.h"
+#ifdef ENABLE_PLUGINS
+#include "plugin.h"
+#endif /* ENABLE_PLUGINS */
#ifndef PATH_SEPARATOR
#if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
static void set_segment_start (const char *, char *);
static void help (void);
-/* Non-zero if we are processing a --defsym from the command line. */
-int parsing_defsym = 0;
-
-/* Codes used for the long options with no short synonyms. 150 isn't
- special; it's just an arbitrary non-ASCII char value. */
-enum option_values
-{
- OPTION_ASSERT = 150,
- OPTION_CALL_SHARED,
- OPTION_CREF,
- OPTION_DEFSYM,
- OPTION_DEMANGLE,
- OPTION_DYNAMIC_LINKER,
- OPTION_SYSROOT,
- OPTION_EB,
- OPTION_EL,
- OPTION_EMBEDDED_RELOCS,
- OPTION_EXPORT_DYNAMIC,
- OPTION_NO_EXPORT_DYNAMIC,
- OPTION_HELP,
- OPTION_IGNORE,
- OPTION_MAP,
- OPTION_NO_DEMANGLE,
- OPTION_NO_KEEP_MEMORY,
- OPTION_NO_WARN_MISMATCH,
- OPTION_NO_WARN_SEARCH_MISMATCH,
- OPTION_NOINHIBIT_EXEC,
- OPTION_NON_SHARED,
- OPTION_NO_WHOLE_ARCHIVE,
- OPTION_OFORMAT,
- OPTION_RELAX,
- OPTION_RETAIN_SYMBOLS_FILE,
- OPTION_RPATH,
- OPTION_RPATH_LINK,
- OPTION_SHARED,
- OPTION_SONAME,
- OPTION_SORT_COMMON,
- OPTION_SORT_SECTION,
- OPTION_STATS,
- OPTION_SYMBOLIC,
- OPTION_SYMBOLIC_FUNCTIONS,
- OPTION_TASK_LINK,
- OPTION_TBSS,
- OPTION_TDATA,
- OPTION_TTEXT,
- OPTION_TTEXT_SEGMENT,
- OPTION_TRADITIONAL_FORMAT,
- OPTION_UR,
- OPTION_VERBOSE,
- OPTION_VERSION,
- OPTION_VERSION_SCRIPT,
- OPTION_VERSION_EXPORTS_SECTION,
- OPTION_DYNAMIC_LIST,
- OPTION_DYNAMIC_LIST_CPP_NEW,
- OPTION_DYNAMIC_LIST_CPP_TYPEINFO,
- OPTION_DYNAMIC_LIST_DATA,
- OPTION_WARN_COMMON,
- OPTION_WARN_CONSTRUCTORS,
- OPTION_WARN_FATAL,
- OPTION_NO_WARN_FATAL,
- OPTION_WARN_MULTIPLE_GP,
- OPTION_WARN_ONCE,
- OPTION_WARN_SECTION_ALIGN,
- OPTION_SPLIT_BY_RELOC,
- OPTION_SPLIT_BY_FILE ,
- OPTION_WHOLE_ARCHIVE,
- 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,
- OPTION_NO_GC_SECTIONS,
- OPTION_PRINT_GC_SECTIONS,
- OPTION_NO_PRINT_GC_SECTIONS,
- OPTION_HASH_SIZE,
- OPTION_CHECK_SECTIONS,
- OPTION_NO_CHECK_SECTIONS,
- OPTION_NO_UNDEFINED,
- OPTION_INIT,
- OPTION_FINI,
- OPTION_SECTION_START,
- OPTION_UNIQUE,
- OPTION_TARGET_HELP,
- OPTION_ALLOW_SHLIB_UNDEFINED,
- OPTION_NO_ALLOW_SHLIB_UNDEFINED,
- OPTION_ALLOW_MULTIPLE_DEFINITION,
- OPTION_NO_UNDEFINED_VERSION,
- OPTION_DEFAULT_SYMVER,
- OPTION_DEFAULT_IMPORTED_SYMVER,
- OPTION_DISCARD_NONE,
- OPTION_SPARE_DYNAMIC_TAGS,
- OPTION_NO_DEFINE_COMMON,
- OPTION_NOSTDLIB,
- OPTION_NO_OMAGIC,
- OPTION_STRIP_DISCARDED,
- OPTION_NO_STRIP_DISCARDED,
- OPTION_ACCEPT_UNKNOWN_INPUT_ARCH,
- OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH,
- OPTION_PIE,
- OPTION_UNRESOLVED_SYMBOLS,
- OPTION_WARN_UNRESOLVED_SYMBOLS,
- OPTION_ERROR_UNRESOLVED_SYMBOLS,
- OPTION_WARN_SHARED_TEXTREL,
- OPTION_WARN_ALTERNATE_EM,
- OPTION_REDUCE_MEMORY_OVERHEADS,
- OPTION_DEFAULT_SCRIPT
-};
-
/* The long options. This structure is used for both the option
parsing and the help text. */
'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES },
{ {NULL, required_argument, NULL, '\0'},
'O', NULL, N_("Optimize output file"), ONE_DASH },
+#ifdef ENABLE_PLUGINS
+ { {"plugin", required_argument, NULL, OPTION_PLUGIN},
+ '\0', N_("PLUGIN"), N_("Load named plugin"), ONE_DASH },
+ { {"plugin-opt", required_argument, NULL, OPTION_PLUGIN_OPT},
+ '\0', N_("ARG"), N_("Send arg to last-loaded plugin"), ONE_DASH },
+ { {"flto", optional_argument, NULL, OPTION_IGNORE},
+ '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
+ ONE_DASH },
+ { {"flto-partition=", required_argument, NULL, OPTION_IGNORE},
+ '\0', NULL, N_("Ignored for GCC LTO option compatibility"),
+ ONE_DASH },
+#endif /* ENABLE_PLUGINS */
+ { {"fuse-ld=", required_argument, NULL, OPTION_IGNORE},
+ '\0', NULL, N_("Ignored for GCC linker option compatibility"),
+ ONE_DASH },
{ {"Qy", no_argument, NULL, OPTION_IGNORE},
'\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
{ {"emit-relocs", no_argument, NULL, 'q'},
/* 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. */
+ --copy-dt-needed-entries and --no-copy-dt-needed-entries. */
{ {"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, N_("Do not allow unresolved references in object files"),
TWO_DASHES },
{ {"allow-shlib-undefined", no_argument, NULL, OPTION_ALLOW_SHLIB_UNDEFINED},
- '\0', NULL, N_("Allow unresolved references in shared libaries"),
+ '\0', NULL, N_("Allow unresolved references in shared libraries"),
TWO_DASHES },
{ {"no-allow-shlib-undefined", no_argument, NULL,
OPTION_NO_ALLOW_SHLIB_UNDEFINED},
{ {"oformat", required_argument, NULL, OPTION_OFORMAT},
'\0', N_("TARGET"), N_("Specify target of output file"),
EXACTLY_TWO_DASHES },
+ { {"print-output-format", no_argument, NULL, OPTION_PRINT_OUTPUT_FORMAT},
+ '\0', NULL, N_("Print default output format"), TWO_DASHES },
+ { {"print-sysroot", no_argument, NULL, OPTION_PRINT_SYSROOT},
+ '\0', NULL, N_("Print current sysroot"), TWO_DASHES },
{ {"qmagic", no_argument, NULL, OPTION_IGNORE},
'\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH },
{ {"reduce-memory-overheads", no_argument, NULL,
'\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
TWO_DASHES },
{ {"relax", no_argument, NULL, OPTION_RELAX},
- '\0', NULL, N_("Relax branches on certain targets"), TWO_DASHES },
+ '\0', NULL, N_("Reduce code size by using target specific optimizations"), TWO_DASHES },
+ { {"no-relax", no_argument, NULL, OPTION_NO_RELAX},
+ '\0', NULL, N_("Do not use relaxation techniques to reduce code size"), TWO_DASHES },
{ {"retain-symbols-file", required_argument, NULL,
OPTION_RETAIN_SYMBOLS_FILE},
'\0', N_("FILE"), N_("Keep only symbols listed in FILE"), TWO_DASHES },
{ {"pic-executable", no_argument, NULL, OPTION_PIE},
'\0', NULL, NULL, TWO_DASHES },
{ {"sort-common", optional_argument, NULL, OPTION_SORT_COMMON},
- '\0', N_("[=ascending|descending]"),
- N_("Sort common symbols by alignment [in specified order]"),
+ '\0', N_("[=ascending|descending]"),
+ N_("Sort common symbols by alignment [in specified order]"),
TWO_DASHES },
{ {"sort_common", no_argument, NULL, OPTION_SORT_COMMON},
'\0', NULL, NULL, NO_HELP },
{ {"sort-section", required_argument, NULL, OPTION_SORT_SECTION},
- '\0', N_("name|alignment"),
+ '\0', N_("name|alignment"),
N_("Sort sections by name or maximum alignment"), TWO_DASHES },
{ {"spare-dynamic-tags", required_argument, NULL, OPTION_SPARE_DYNAMIC_TAGS},
'\0', N_("COUNT"), N_("How many tags to reserve in .dynamic section"),
'\0', N_("ADDRESS"), N_("Set address of .text section"), ONE_DASH },
{ {"Ttext-segment", required_argument, NULL, OPTION_TTEXT_SEGMENT},
'\0', N_("ADDRESS"), N_("Set address of text segment"), ONE_DASH },
+ { {"Trodata-segment", required_argument, NULL, OPTION_TRODATA_SEGMENT},
+ '\0', N_("ADDRESS"), N_("Set address of rodata segment"), ONE_DASH },
+ { {"Tldata-segment", required_argument, NULL, OPTION_TLDATA_SEGMENT},
+ '\0', N_("ADDRESS"), N_("Set address of ldata segment"), ONE_DASH },
{ {"unresolved-symbols=<method>", required_argument, NULL,
OPTION_UNRESOLVED_SYMBOLS},
'\0', NULL, N_("How to handle unresolved symbols. <method> is:\n"
" ignore-all, report-all, ignore-in-object-files,\n"
" ignore-in-shared-libs"),
TWO_DASHES },
- { {"verbose", no_argument, NULL, OPTION_VERBOSE},
- '\0', NULL, N_("Output lots of information during link"), TWO_DASHES },
+ { {"verbose", optional_argument, NULL, OPTION_VERBOSE},
+ '\0', N_("[=NUMBER]"),
+ N_("Output lots of information during link"), TWO_DASHES },
{ {"dll-verbose", no_argument, NULL, OPTION_VERBOSE}, /* Linux. */
'\0', NULL, NULL, NO_HELP },
{ {"version-script", required_argument, NULL, OPTION_VERSION_SCRIPT },
TWO_DASHES },
{ {"wrap", required_argument, NULL, OPTION_WRAP},
'\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), TWO_DASHES },
+ { {"ignore-unresolved-symbol", required_argument, NULL,
+ OPTION_IGNORE_UNRESOLVED_SYMBOL},
+ '\0', N_("SYMBOL"),
+ N_("Unresolved SYMBOL will not cause an error or warning"), TWO_DASHES },
+ { {"push-state", no_argument, NULL, OPTION_PUSH_STATE},
+ '\0', NULL, N_("Push state of flags governing input file handling"),
+ TWO_DASHES },
+ { {"pop-state", no_argument, NULL, OPTION_POP_STATE},
+ '\0', NULL, N_("Pop state of flags governing input file handling"),
+ TWO_DASHES },
};
#define OPTION_COUNT ARRAY_SIZE (ld_options)
}
}
+ optarg = "relro";
+ ldemul_handle_option ('z');
+
last_optind = -1;
while (1)
{
int longind;
int optc;
+ static unsigned int defsym_count;
/* Using last_optind lets us avoid calling ldemul_parse_args
multiple times on a single option, which would lead to
``use only shared libraries'' but, then, we don't
currently support shared libraries on HP/UX anyhow. */
if (strcmp (optarg, "archive") == 0)
- config.dynamic_link = FALSE;
+ input_flags.dynamic = FALSE;
else if (strcmp (optarg, "shared") == 0
|| strcmp (optarg, "default") == 0)
- config.dynamic_link = TRUE;
+ input_flags.dynamic = TRUE;
else
einfo (_("%P%F: unrecognized -a option `%s'\n"), optarg);
break;
yyparse ();
break;
case OPTION_CALL_SHARED:
- config.dynamic_link = TRUE;
+ input_flags.dynamic = TRUE;
break;
case OPTION_NON_SHARED:
- config.dynamic_link = FALSE;
+ input_flags.dynamic = FALSE;
break;
case OPTION_CREF:
command_line.cref = TRUE;
break;
case OPTION_DEFSYM:
lex_string = optarg;
- lex_redirect (optarg);
+ lex_redirect (optarg, "--defsym", ++defsym_count);
parser_input = input_defsym;
- parsing_defsym = 1;
yyparse ();
- parsing_defsym = 0;
lex_string = NULL;
break;
case OPTION_DEMANGLE:
style = cplus_demangle_name_to_style (optarg);
if (style == unknown_demangling)
- einfo (_("%F%P: unknown demangling style `%s'"),
+ einfo (_("%F%P: unknown demangling style `%s'\n"),
optarg);
cplus_demangle_set_style (style);
case 'N':
config.text_read_only = FALSE;
config.magic_demand_paged = FALSE;
- config.dynamic_link = FALSE;
+ input_flags.dynamic = FALSE;
break;
case OPTION_NO_OMAGIC:
config.text_read_only = TRUE;
config.magic_demand_paged = TRUE;
- /* NB/ Does not set dynamic_link to TRUE.
+ /* NB/ Does not set input_flags.dynamic to TRUE.
Use --call-shared or -Bdynamic for this. */
break;
case 'n':
config.magic_demand_paged = FALSE;
- config.dynamic_link = FALSE;
+ input_flags.dynamic = FALSE;
break;
case OPTION_NO_DEFINE_COMMON:
command_line.inhibit_common_definition = TRUE;
config.only_cmd_line_lib_dirs = TRUE;
break;
case OPTION_NO_WHOLE_ARCHIVE:
- whole_archive = FALSE;
+ input_flags.whole_archive = FALSE;
break;
case 'O':
/* FIXME "-O<non-digits> <value>" used to set the address of
case OPTION_OFORMAT:
lang_add_output_format (optarg, NULL, NULL, 0);
break;
+ case OPTION_PRINT_SYSROOT:
+ if (*ld_sysroot)
+ puts (ld_sysroot);
+ xexit (0);
+ break;
+ case OPTION_PRINT_OUTPUT_FORMAT:
+ command_line.print_output_format = TRUE;
+ break;
+#ifdef ENABLE_PLUGINS
+ case OPTION_PLUGIN:
+ plugin_opt_plugin (optarg);
+ break;
+ case OPTION_PLUGIN_OPT:
+ if (plugin_opt_plugin_arg (optarg))
+ einfo(_("%P%F: bad -plugin-opt option\n"));
+ break;
+#endif /* ENABLE_PLUGINS */
case 'q':
link_info.emitrelocations = TRUE;
break;
config.build_constructors = FALSE;
config.magic_demand_paged = FALSE;
config.text_read_only = FALSE;
- config.dynamic_link = FALSE;
+ input_flags.dynamic = FALSE;
break;
case 'R':
/* The GNU linker traditionally uses -R to mean to include
command_line.rpath_link = buf;
}
break;
+ case OPTION_NO_RELAX:
+ DISABLE_RELAXATION;
+ break;
case OPTION_RELAX:
- command_line.relax = TRUE;
+ ENABLE_RELAXATION;
break;
case OPTION_RETAIN_SYMBOLS_FILE:
add_keepsyms_file (optarg);
break;
case 'h': /* Used on Solaris. */
case OPTION_SONAME:
- command_line.soname = optarg;
+ if (optarg[0] == '\0' && command_line.soname
+ && command_line.soname[0])
+ einfo (_("%P: SONAME must not be empty string; keeping previous one\n"));
+ else
+ command_line.soname = optarg;
break;
case OPTION_SORT_COMMON:
if (optarg == NULL
case OPTION_TTEXT_SEGMENT:
set_segment_start (".text-segment", optarg);
break;
+ case OPTION_TRODATA_SEGMENT:
+ set_segment_start (".rodata-segment", optarg);
+ break;
+ case OPTION_TLDATA_SEGMENT:
+ set_segment_start (".ldata-segment", optarg);
+ break;
case OPTION_TRADITIONAL_FORMAT:
link_info.traditional_format = TRUE;
break;
config.build_constructors = TRUE;
config.magic_demand_paged = FALSE;
config.text_read_only = FALSE;
- config.dynamic_link = FALSE;
+ input_flags.dynamic = FALSE;
break;
case 'u':
- ldlang_add_undef (optarg);
+ ldlang_add_undef (optarg, TRUE);
break;
case OPTION_UNIQUE:
if (optarg != NULL)
case OPTION_VERBOSE:
ldversion (1);
version_printed = TRUE;
- trace_file_tries = TRUE;
+ verbose = TRUE;
overflow_cutoff_limit = -2;
+ if (optarg != NULL)
+ {
+ char *end;
+ int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
+ if (*end)
+ einfo (_("%P%F: invalid number `%s'\n"), optarg);
+#ifdef ENABLE_PLUGINS
+ report_plugin_symbols = level > 1;
+#endif /* ENABLE_PLUGINS */
+ }
break;
case 'v':
ldversion (0);
link_info.warn_alternate_em = TRUE;
break;
case OPTION_WHOLE_ARCHIVE:
- whole_archive = TRUE;
+ input_flags.whole_archive = TRUE;
break;
case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
- add_DT_NEEDED_for_dynamic = TRUE;
+ input_flags.add_DT_NEEDED_for_dynamic = TRUE;
break;
case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
- add_DT_NEEDED_for_dynamic = FALSE;
+ input_flags.add_DT_NEEDED_for_dynamic = FALSE;
break;
case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
- add_DT_NEEDED_for_regular = TRUE;
+ input_flags.add_DT_NEEDED_for_regular = TRUE;
break;
case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
- add_DT_NEEDED_for_regular = FALSE;
+ input_flags.add_DT_NEEDED_for_regular = FALSE;
break;
case OPTION_WRAP:
add_wrap (optarg);
break;
+ case OPTION_IGNORE_UNRESOLVED_SYMBOL:
+ add_ignoresym (&link_info, optarg);
+ break;
case OPTION_DISCARD_NONE:
link_info.discard = discard_none;
break;
command_line.accept_unknown_input_arch = FALSE;
break;
case '(':
- if (ingroup)
- einfo (_("%P%F: may not nest groups (--help for usage)\n"));
-
lang_enter_group ();
- ingroup = 1;
+ ingroup++;
break;
case ')':
if (! ingroup)
einfo (_("%P%F: group ended before it began (--help for usage)\n"));
lang_leave_group ();
- ingroup = 0;
+ ingroup--;
break;
case OPTION_INIT:
einfo (_("%P%X: --hash-size needs a numeric argument\n"));
}
break;
+
+ case OPTION_PUSH_STATE:
+ input_flags.pushed = xmemdup (&input_flags,
+ sizeof (input_flags),
+ sizeof (input_flags));
+ break;
+
+ case OPTION_POP_STATE:
+ if (input_flags.pushed == NULL)
+ einfo (_("%P%F: no state pushed before popping\n"));
+ else
+ {
+ struct lang_input_statement_flags *oldp = input_flags.pushed;
+ memcpy (&input_flags, oldp, sizeof (input_flags));
+ free (oldp);
+ }
+ break;
}
}
- if (ingroup)
- lang_leave_group ();
+ if (command_line.soname && command_line.soname[0] == '\0')
+ {
+ einfo (_("%P: SONAME must not be empty string; ignored\n"));
+ command_line.soname = NULL;
+ }
+
+ while (ingroup)
+ {
+ lang_leave_group ();
+ ingroup--;
+ }
if (default_dirlist != NULL)
{
if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
/* 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"));
+ }
+
+ /* 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. */
+ switch (command_line.symbolic)
+ {
+ case symbolic_unset:
+ break;
+ case symbolic:
+ /* -Bsymbolic is for shared library only. */
+ if (link_info.shared)
+ {
+ link_info.symbolic = TRUE;
+ /* Should we free the unused memory? */
+ link_info.dynamic_list = NULL;
+ command_line.dynamic_list = dynamic_list_unset;
+ }
+ break;
+ case symbolic_functions:
+ /* -Bsymbolic-functions is for shared library only. */
+ if (link_info.shared)
+ command_line.dynamic_list = dynamic_list_data;
+ break;
+ }
+
+ switch (command_line.dynamic_list)
+ {
+ case dynamic_list_unset:
+ break;
+ case dynamic_list_data:
+ link_info.dynamic_data = TRUE;
+ case dynamic_list:
+ link_info.dynamic = TRUE;
+ break;
+ }
+
+ if (! link_info.shared)
+ {
+ if (command_line.filter_shlib)
+ einfo (_("%P%F: -F may not be used without -shared\n"));
+ if (command_line.auxiliary_filters)
+ 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)
+ {
+ link_info.strip = strip_debugger;
+ if (link_info.discard == discard_sec_merge)
+ link_info.discard = discard_all;
+ }
}
/* Add the (colon-separated) elements of DIRLIST_PTR to the
projects / platform / upstream / binutils.git / blobdiff