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binutils-gdb/ld/lexsup.c
H.J. Lu 496afd1705 elf: Add -z unique-symbol to avoid duplicated local symbol names 
The symbol string table in the .symtab section is optional and cosmetic.
The contents of the .symtab section have no impact on run-time execution.
The symbol names in the symbol string table help distinguish addresses at
different locations.  Add a linker option, -z unique-symbol, to avoid
duplicated local symbol names in the symbol string table.

This feature was well received by the livepatch maintainers.  It not only
solves the duplicated local symbol name problem, but also would allow
livepatch to more precisely locate duplicate symbols in general for
patching.

bfd/

	PR ld/26391
	* elflink.c (elf_final_link_info): Add local_hash_table.
	(local_hash_entry): New.
	(local_hash_newfunc): Likewise.
	(elf_link_output_symstrtab): Append ".COUNT" to duplicated local
	symbols.
	(bfd_elf_final_link): Initialize and free local_hash_table for
	"-z unique-symbol".

include/

	PR ld/26391
	* bfdlink.h (bfd_link_info): Add unique_symbol.

ld/

	PR ld/26391
	* NEWS: Mention "-z unique-symbol".
	* emultempl/elf.em (gld${EMULATION_NAME}_handle_option): Handle
	"-z unique-symbol" and "-z nounique-symbol".
	* ld.texi: Document "-z unique-symbol" and "-z nounique-symbol".
	* lexsup.c (elf_static_list_options): Add "-z unique-symbol" and
	"-z nounique-symbol".
	* testsuite/ld-elf/elf.exp: Add PR ld/26391 tests.
	* testsuite/ld-elf/pr26391.nd: New file.
	* testsuite/ld-elf/pr26391.out: Likewise.
	* testsuite/ld-elf/pr26391a.c: Likewise.
	* testsuite/ld-elf/pr26391b.c: Likewise.
	* testsuite/ld-elf/pr26391c.c: Likewise.
	* testsuite/ld-elf/pr26391d.c: Likewise.
2020-09-12 05:37:43 -07:00

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/* Parse options for the GNU linker.
Copyright (C) 1991-2020 Free Software Foundation, Inc.
This file is part of the GNU Binutils.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#include "sysdep.h"
#include "bfd.h"
#include "bfdver.h"
#include "libiberty.h"
#include <stdio.h>
#include <string.h>
#include "safe-ctype.h"
#include "getopt.h"
#include "bfdlink.h"
#include "ctf-api.h"
#include "ld.h"
#include "ldmain.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
#include <ldgram.h>
#include "ldlex.h"
#include "ldfile.h"
#include "ldver.h"
#include "ldemul.h"
#include "demangle.h"
#if BFD_SUPPORTS_PLUGINS
#include "plugin.h"
#endif /* BFD_SUPPORTS_PLUGINS */
#ifndef PATH_SEPARATOR
#if defined (__MSDOS__) || (defined (_WIN32) && ! defined (__CYGWIN32__))
#define PATH_SEPARATOR ';'
#else
#define PATH_SEPARATOR ':'
#endif
#endif
/* Somewhere above, sys/stat.h got included . . . . */
#if !defined(S_ISDIR) && defined(S_IFDIR)
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
static void set_default_dirlist (char *);
static void set_section_start (char *, char *);
static void set_segment_start (const char *, char *);
static void help (void);
/* The long options. This structure is used for both the option
parsing and the help text. */
enum control_enum {
/* Use one dash before long option name. */
ONE_DASH = 1,
/* Use two dashes before long option name. */
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
the long option name. This feature was added in order to resolve
the confusion about the -omagic command line switch. Is it setting
the output file name to "magic" or is it setting the NMAGIC flag on
the output ? It has been decided that it is setting the output file
name, and that if you want to set the NMAGIC flag you should use -N
or --omagic. */
EXACTLY_TWO_DASHES,
/* Don't mention this option in --help output. */
NO_HELP
};
struct ld_option
{
/* The long option information. */
struct option opt;
/* The short option with the same meaning ('\0' if none). */
char shortopt;
/* The name of the argument (NULL if none). */
const char *arg;
/* The documentation string. If this is NULL, this is a synonym for
the previous option. */
const char *doc;
enum control_enum control;
};
static const struct ld_option ld_options[] =
{
{ {NULL, required_argument, NULL, '\0'},
'a', N_("KEYWORD"), N_("Shared library control for HP/UX compatibility"),
ONE_DASH },
{ {"architecture", required_argument, NULL, 'A'},
'A', N_("ARCH"), N_("Set architecture") , TWO_DASHES },
{ {"format", required_argument, NULL, 'b'},
'b', N_("TARGET"), N_("Specify target for following input files"),
TWO_DASHES },
{ {"mri-script", required_argument, NULL, 'c'},
'c', N_("FILE"), N_("Read MRI format linker script"), TWO_DASHES },
{ {"dc", no_argument, NULL, 'd'},
'd', NULL, N_("Force common symbols to be defined"), ONE_DASH },
{ {"dp", no_argument, NULL, 'd'},
'\0', NULL, NULL, ONE_DASH },
{ {"dependency-file", required_argument, NULL, OPTION_DEPENDENCY_FILE},
'\0', N_("FILE"), N_("Write dependency file"), TWO_DASHES },
{ {"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},
'E', NULL, N_("Export all dynamic symbols"), TWO_DASHES },
{ {"no-export-dynamic", no_argument, NULL, OPTION_NO_EXPORT_DYNAMIC},
'\0', NULL, N_("Undo the effect of --export-dynamic"), TWO_DASHES },
{ {"enable-non-contiguous-regions", no_argument, NULL, OPTION_NON_CONTIGUOUS_REGIONS},
'\0', NULL, N_("Enable support of non-contiguous memory regions"), TWO_DASHES },
{ {"enable-non-contiguous-regions-warnings", no_argument, NULL, OPTION_NON_CONTIGUOUS_REGIONS_WARNINGS},
'\0', NULL, N_("Enable warnings when --enable-non-contiguous-regions may cause unexpected behaviour"), TWO_DASHES },
{ {"EB", no_argument, NULL, OPTION_EB},
'\0', NULL, N_("Link big-endian objects"), ONE_DASH },
{ {"EL", no_argument, NULL, OPTION_EL},
'\0', NULL, N_("Link little-endian objects"), ONE_DASH },
{ {"auxiliary", required_argument, NULL, 'f'},
'f', N_("SHLIB"), N_("Auxiliary filter for shared object symbol table"),
TWO_DASHES },
{ {"filter", required_argument, NULL, 'F'},
'F', N_("SHLIB"), N_("Filter for shared object symbol table"),
TWO_DASHES },
{ {NULL, no_argument, NULL, '\0'},
'g', NULL, N_("Ignored"), ONE_DASH },
{ {"gpsize", required_argument, NULL, 'G'},
'G', N_("SIZE"), N_("Small data size (if no size, same as --shared)"),
TWO_DASHES },
{ {"soname", required_argument, NULL, OPTION_SONAME},
'h', N_("FILENAME"), N_("Set internal name of shared library"), ONE_DASH },
{ {"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'},
'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"),
TWO_DASHES },
{ {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT},
'\0', NULL, N_("Override the default sysroot location"), TWO_DASHES },
{ {NULL, required_argument, NULL, '\0'},
'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH },
{ {"print-map", no_argument, NULL, 'M'},
'M', NULL, N_("Print map file on standard output"), TWO_DASHES },
{ {"nmagic", no_argument, NULL, 'n'},
'n', NULL, N_("Do not page align data"), TWO_DASHES },
{ {"omagic", no_argument, NULL, 'N'},
'N', NULL, N_("Do not page align data, do not make text readonly"),
EXACTLY_TWO_DASHES },
{ {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC},
'\0', NULL, N_("Page align data, make text readonly"),
EXACTLY_TWO_DASHES },
{ {"output", required_argument, NULL, 'o'},
'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 },
#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},
'\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 },
#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 },
{ {"map-whole-files", optional_argument, NULL, OPTION_IGNORE},
'\0', NULL, N_("Ignored for gold option compatibility"),
TWO_DASHES },
{ {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE},
'\0', NULL, N_("Ignored for gold option compatibility"),
TWO_DASHES },
{ {"Qy", no_argument, NULL, OPTION_IGNORE},
'\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH },
{ {"emit-relocs", no_argument, NULL, 'q'},
'q', NULL, "Generate relocations in final output", TWO_DASHES },
{ {"relocatable", no_argument, NULL, 'r'},
'r', NULL, N_("Generate relocatable output"), TWO_DASHES },
{ {NULL, no_argument, NULL, '\0'},
'i', NULL, NULL, ONE_DASH },
{ {"just-symbols", required_argument, NULL, 'R'},
'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"),
TWO_DASHES },
{ {"strip-all", no_argument, NULL, 's'},
's', NULL, N_("Strip all symbols"), TWO_DASHES },
{ {"strip-debug", no_argument, NULL, 'S'},
'S', NULL, N_("Strip debugging symbols"), TWO_DASHES },
{ {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED},
'\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES },
{ {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED},
'\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES },
{ {"trace", no_argument, NULL, 't'},
't', NULL, N_("Trace file opens"), TWO_DASHES },
{ {"script", required_argument, NULL, 'T'},
'T', N_("FILE"), N_("Read linker script"), TWO_DASHES },
{ {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
'\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES },
{ {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT},
'\0', NULL, NULL, ONE_DASH },
{ {"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 },
{ {"Ur", no_argument, NULL, OPTION_UR},
'\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH },
{ {"version", no_argument, NULL, OPTION_VERSION},
'v', NULL, N_("Print version information"), TWO_DASHES },
{ {NULL, no_argument, NULL, '\0'},
'V', NULL, N_("Print version and emulation information"), ONE_DASH },
{ {"discard-all", no_argument, NULL, 'x'},
'x', NULL, N_("Discard all local symbols"), TWO_DASHES },
{ {"discard-locals", no_argument, NULL, 'X'},
'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES },
{ {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE},
'\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES },
{ {"trace-symbol", required_argument, NULL, 'y'},
'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES },
{ {NULL, required_argument, NULL, '\0'},
'Y', N_("PATH"), N_("Default search path for Solaris compatibility"),
ONE_DASH },
{ {"start-group", no_argument, NULL, '('},
'(', NULL, N_("Start a group"), TWO_DASHES },
{ {"end-group", no_argument, NULL, ')'},
')', NULL, N_("End a group"), TWO_DASHES },
{ {"accept-unknown-input-arch", no_argument, NULL,
OPTION_ACCEPT_UNKNOWN_INPUT_ARCH},
'\0', NULL,
N_("Accept input files whose architecture cannot be determined"),
TWO_DASHES },
{ {"no-accept-unknown-input-arch", no_argument, NULL,
OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH},
'\0', NULL, N_("Reject input files whose architecture is unknown"),
TWO_DASHES },
/* The next two options are deprecated because of their similarity to
--as-needed and --no-as-needed. They have been replaced by
--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, 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_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 },
{ {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED},
'\0', NULL, N_("Link against shared libraries"), ONE_DASH },
{ {"dy", no_argument, NULL, OPTION_CALL_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"Bstatic", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, N_("Do not link against shared libraries"), ONE_DASH },
{ {"dn", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"non_shared", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"static", no_argument, NULL, OPTION_NON_SHARED},
'\0', NULL, NULL, ONE_DASH },
{ {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC},
'\0', NULL, N_("Bind global references locally"), ONE_DASH },
{ {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS},
'\0', NULL, N_("Bind global function references locally"), ONE_DASH },
{ {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS},
'\0', NULL, N_("Check section addresses for overlaps (default)"),
TWO_DASHES },
{ {"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},
'\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES },
{ {"demangle", optional_argument, NULL, OPTION_DEMANGLE},
'\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"),
TWO_DASHES },
{ {"disable-multiple-abs-defs", no_argument, NULL,
OPTION_DISABLE_MULTIPLE_DEFS_ABS},
'\0', NULL, N_("Do not allow multiple definitions with symbols included\n"
" in filename invoked by -R or --just-symbols"),
TWO_DASHES},
{ {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS},
'\0', NULL, N_("Generate embedded relocs"), TWO_DASHES},
{ {"fatal-warnings", no_argument, NULL, OPTION_WARN_FATAL},
'\0', NULL, N_("Treat warnings as errors"),
TWO_DASHES },
{ {"no-fatal-warnings", no_argument, NULL, OPTION_NO_WARN_FATAL},
'\0', NULL, N_("Do not treat warnings as errors (default)"),
TWO_DASHES },
{ {"fini", required_argument, NULL, OPTION_FINI},
'\0', N_("SYMBOL"), N_("Call SYMBOL at unload-time"), ONE_DASH },
{ {"force-exe-suffix", no_argument, NULL, OPTION_FORCE_EXE_SUFFIX},
'\0', NULL, N_("Force generation of file with .exe suffix"), TWO_DASHES},
{ {"gc-sections", no_argument, NULL, OPTION_GC_SECTIONS},
'\0', NULL, N_("Remove unused sections (on some targets)"),
TWO_DASHES },
{ {"no-gc-sections", no_argument, NULL, OPTION_NO_GC_SECTIONS},
'\0', NULL, N_("Don't remove unused sections (default)"),
TWO_DASHES },
{ {"print-gc-sections", no_argument, NULL, OPTION_PRINT_GC_SECTIONS},
'\0', NULL, N_("List removed unused sections on stderr"),
TWO_DASHES },
{ {"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 },
{ {"help", no_argument, NULL, OPTION_HELP},
'\0', NULL, N_("Print option help"), TWO_DASHES },
{ {"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/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 },
'\0', NULL, N_("Do not demangle symbol names"), TWO_DASHES },
{ {"no-keep-memory", no_argument, NULL, OPTION_NO_KEEP_MEMORY},
'\0', NULL, N_("Use less memory and more disk I/O"), TWO_DASHES },
{ {"no-undefined", no_argument, NULL, OPTION_NO_UNDEFINED},
'\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 libraries"),
TWO_DASHES },
{ {"no-allow-shlib-undefined", no_argument, NULL,
OPTION_NO_ALLOW_SHLIB_UNDEFINED},
'\0', NULL, N_("Do not allow unresolved references in shared libs"),
TWO_DASHES },
{ {"allow-multiple-definition", no_argument, NULL,
OPTION_ALLOW_MULTIPLE_DEFINITION},
'\0', NULL, N_("Allow multiple definitions"), TWO_DASHES },
{ {"no-undefined-version", no_argument, NULL, OPTION_NO_UNDEFINED_VERSION},
'\0', NULL, N_("Disallow undefined version"), TWO_DASHES },
{ {"default-symver", no_argument, NULL, OPTION_DEFAULT_SYMVER},
'\0', NULL, N_("Create default symbol version"), TWO_DASHES },
{ {"default-imported-symver", no_argument, NULL,
OPTION_DEFAULT_IMPORTED_SYMVER},
'\0', NULL, N_("Create default symbol version for imported symbols"),
TWO_DASHES },
{ {"no-warn-mismatch", no_argument, NULL, OPTION_NO_WARN_MISMATCH},
'\0', NULL, N_("Don't warn about mismatched input files"), TWO_DASHES},
{ {"no-warn-search-mismatch", no_argument, NULL,
OPTION_NO_WARN_SEARCH_MISMATCH},
'\0', NULL, N_("Don't warn on finding an incompatible library"),
TWO_DASHES},
{ {"no-whole-archive", no_argument, NULL, OPTION_NO_WHOLE_ARCHIVE},
'\0', NULL, N_("Turn off --whole-archive"), TWO_DASHES },
{ {"noinhibit-exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
'\0', NULL, N_("Create an output file even if errors occur"),
TWO_DASHES },
{ {"noinhibit_exec", no_argument, NULL, OPTION_NOINHIBIT_EXEC},
'\0', NULL, NULL, NO_HELP },
{ {"nostdlib", no_argument, NULL, OPTION_NOSTDLIB},
'\0', NULL, N_("Only use library directories specified on\n"
" the command line"),
ONE_DASH },
{ {"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,
OPTION_REDUCE_MEMORY_OVERHEADS},
'\0', NULL, N_("Reduce memory overheads, possibly taking much longer"),
TWO_DASHES },
{ {"relax", no_argument, NULL, OPTION_RELAX},
'\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 },
{ {"rpath", required_argument, NULL, OPTION_RPATH},
'\0', N_("PATH"), N_("Set runtime shared library search path"), ONE_DASH },
{ {"rpath-link", required_argument, NULL, OPTION_RPATH_LINK},
'\0', N_("PATH"), N_("Set link time shared library search path"),
ONE_DASH },
{ {"shared", no_argument, NULL, OPTION_SHARED},
'\0', NULL, N_("Create a shared library"), ONE_DASH },
{ {"Bshareable", no_argument, NULL, OPTION_SHARED }, /* FreeBSD. */
'\0', NULL, NULL, ONE_DASH },
{ {"pie", no_argument, NULL, OPTION_PIE},
'\0', NULL, N_("Create a position independent executable"), ONE_DASH },
{ {"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]"),
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"),
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"),
TWO_DASHES },
{ {"split-by-file", optional_argument, NULL, OPTION_SPLIT_BY_FILE},
'\0', N_("[=SIZE]"), N_("Split output sections every SIZE octets"),
TWO_DASHES },
{ {"split-by-reloc", optional_argument, NULL, OPTION_SPLIT_BY_RELOC},
'\0', N_("[=COUNT]"), N_("Split output sections every COUNT relocs"),
TWO_DASHES },
{ {"stats", no_argument, NULL, OPTION_STATS},
'\0', NULL, N_("Print memory usage statistics"), TWO_DASHES },
{ {"target-help", no_argument, NULL, OPTION_TARGET_HELP},
'\0', NULL, N_("Display target specific options"), TWO_DASHES },
{ {"task-link", required_argument, NULL, OPTION_TASK_LINK},
'\0', N_("SYMBOL"), N_("Do task level linking"), TWO_DASHES },
{ {"traditional-format", no_argument, NULL, OPTION_TRADITIONAL_FORMAT},
'\0', NULL, N_("Use same format as native linker"), TWO_DASHES },
{ {"section-start", required_argument, NULL, OPTION_SECTION_START},
'\0', N_("SECTION=ADDRESS"), N_("Set address of named section"),
TWO_DASHES },
{ {"Tbss", required_argument, NULL, OPTION_TBSS},
'\0', N_("ADDRESS"), N_("Set address of .bss section"), ONE_DASH },
{ {"Tdata", required_argument, NULL, OPTION_TDATA},
'\0', N_("ADDRESS"), N_("Set address of .data section"), ONE_DASH },
{ {"Ttext", required_argument, NULL, OPTION_TTEXT},
'\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", 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 },
'\0', N_("FILE"), N_("Read version information script"), TWO_DASHES },
{ {"version-exports-section", required_argument, NULL,
OPTION_VERSION_EXPORTS_SECTION },
'\0', N_("SYMBOL"), N_("Take export symbols list from .exports, using\n"
" SYMBOL as the version."),
TWO_DASHES },
{ {"dynamic-list-data", no_argument, NULL, OPTION_DYNAMIC_LIST_DATA},
'\0', NULL, N_("Add data symbols to dynamic list"), TWO_DASHES },
{ {"dynamic-list-cpp-new", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_NEW},
'\0', NULL, N_("Use C++ operator new/delete dynamic list"), TWO_DASHES },
{ {"dynamic-list-cpp-typeinfo", no_argument, NULL, OPTION_DYNAMIC_LIST_CPP_TYPEINFO},
'\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},
'\0', NULL, N_("Warn if global constructors/destructors are seen"),
TWO_DASHES },
{ {"warn-multiple-gp", no_argument, NULL, OPTION_WARN_MULTIPLE_GP},
'\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-section-align", no_argument, NULL, OPTION_WARN_SECTION_ALIGN},
'\0', NULL, N_("Warn if start of section changes due to alignment"),
TWO_DASHES },
{ {"warn-textrel", no_argument, NULL, OPTION_WARN_TEXTREL},
'\0', NULL,
#if DEFAULT_LD_TEXTREL_CHECK_WARNING
N_("Warn if output has DT_TEXTREL (default)"),
#else
N_("Warn if output 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 },
{ {"warn-unresolved-symbols", no_argument, NULL,
OPTION_WARN_UNRESOLVED_SYMBOLS},
'\0', NULL, N_("Report unresolved symbols as warnings"), TWO_DASHES },
{ {"error-unresolved-symbols", no_argument, NULL,
OPTION_ERROR_UNRESOLVED_SYMBOLS},
'\0', NULL, N_("Report unresolved symbols as errors"), TWO_DASHES },
{ {"whole-archive", no_argument, NULL, OPTION_WHOLE_ARCHIVE},
'\0', NULL, N_("Include all objects from following archives"),
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 },
{ {"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 },
{ {"print-map-discarded", no_argument, NULL, OPTION_PRINT_MAP_DISCARDED},
'\0', NULL, N_("Show discarded sections in map file output (default)"),
TWO_DASHES },
{ {"no-print-map-discarded", no_argument, NULL, OPTION_NO_PRINT_MAP_DISCARDED},
'\0', NULL, N_("Do not show discarded sections in map file output"),
TWO_DASHES },
{ {"ctf-variables", no_argument, NULL, OPTION_CTF_VARIABLES},
'\0', NULL, N_("Emit names and types of static variables in CTF"),
TWO_DASHES },
{ {"no-ctf-variables", no_argument, NULL, OPTION_NO_CTF_VARIABLES},
'\0', NULL, N_("Do not emit names and types of static variables in CTF"),
TWO_DASHES },
{ {"ctf-share-types=<method>", required_argument, NULL,
OPTION_CTF_SHARE_TYPES},
'\0', NULL, N_("How to share CTF types between translation units.\n"
" <method> is: share-unconflicted (default),\n"
" share-duplicated"),
TWO_DASHES },
};
#define OPTION_COUNT ARRAY_SIZE (ld_options)
void
parse_args (unsigned argc, char **argv)
{
unsigned i;
int is, il, irl;
int ingroup = 0;
char *default_dirlist = NULL;
char *shortopts;
struct option *longopts;
struct option *really_longopts;
int last_optind;
enum symbolic_enum
{
symbolic_unset = 0,
symbolic,
symbolic_functions,
} opt_symbolic = symbolic_unset;
enum dynamic_list_enum
{
dynamic_list_unset = 0,
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 *)
xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
really_longopts = (struct option *)
xmalloc (sizeof (*really_longopts) * (OPTION_COUNT + 1));
/* Starting the short option string with '-' is for programs that
expect options and other ARGV-elements in any order and that care about
the ordering of the two. We describe each non-option ARGV-element
as if it were the argument of an option with character code 1. */
shortopts[0] = '-';
is = 1;
il = 0;
irl = 0;
for (i = 0; i < OPTION_COUNT; i++)
{
if (ld_options[i].shortopt != '\0')
{
shortopts[is] = ld_options[i].shortopt;
++is;
if (ld_options[i].opt.has_arg == required_argument
|| ld_options[i].opt.has_arg == optional_argument)
{
shortopts[is] = ':';
++is;
if (ld_options[i].opt.has_arg == optional_argument)
{
shortopts[is] = ':';
++is;
}
}
}
if (ld_options[i].opt.name != NULL)
{
if (ld_options[i].control == EXACTLY_TWO_DASHES)
{
really_longopts[irl] = ld_options[i].opt;
++irl;
}
else
{
longopts[il] = ld_options[i].opt;
++il;
}
}
}
shortopts[is] = '\0';
longopts[il].name = NULL;
really_longopts[irl].name = NULL;
ldemul_add_options (is, &shortopts, il, &longopts, irl, &really_longopts);
/* The -G option is ambiguous on different platforms. Sometimes it
specifies the largest data size to put into the small data
section. Sometimes it is equivalent to --shared. Unfortunately,
the first form takes an argument, while the second does not.
We need to permit the --shared form because on some platforms,
such as Solaris, gcc -shared will pass -G to the linker.
To permit either usage, we look through the argument list. If we
find -G not followed by a number, we change it into --shared.
This will work for most normal cases. */
for (i = 1; i < argc; i++)
if (strcmp (argv[i], "-G") == 0
&& (i + 1 >= argc
|| ! ISDIGIT (argv[i + 1][0])))
argv[i] = (char *) "--shared";
/* Because we permit long options to start with a single dash, and
we have a --library option, and the -l option is conventionally
used with an immediately following argument, we can have bad
results if somebody tries to use -l with a library whose name
happens to start with "ibrary", as in -li. We avoid problems by
simply turning -l into --library. This means that users will
have to use two dashes in order to use --library, which is OK
since that's how it is documented.
FIXME: It's possible that this problem can arise for other short
options as well, although the user does always have the recourse
of adding a space between the option and the argument. */
for (i = 1; i < argc; i++)
{
if (argv[i][0] == '-'
&& argv[i][1] == 'l'
&& argv[i][2] != '\0')
{
char *n;
n = (char *) xmalloc (strlen (argv[i]) + 20);
sprintf (n, "--library=%s", argv[i] + 2);
argv[i] = n;
}
}
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
confusion in the internal static variables maintained by
getopt. This could otherwise happen for an argument like
-nx, in which the -n is parsed as a single option, and we
loop around to pick up the -x. */
if (optind != last_optind)
if (ldemul_parse_args (argc, argv))
continue;
/* getopt_long_only is like getopt_long, but '-' as well as '--'
can indicate a long option. */
opterr = 0;
last_optind = optind;
optc = getopt_long_only (argc, argv, shortopts, longopts, &longind);
if (optc == '?')
{
optind = last_optind;
optc = getopt_long (argc, argv, "-", really_longopts, &longind);
}
if (ldemul_handle_option (optc))
continue;
if (optc == -1)
break;
switch (optc)
{
case '?':
{
/* 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 (_("%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);
break;
case OPTION_IGNORE:
break;
case 'a':
/* For HP/UX compatibility. Actually -a shared should mean
``use only shared libraries'' but, then, we don't
currently support shared libraries on HP/UX anyhow. */
if (strcmp (optarg, "archive") == 0)
input_flags.dynamic = FALSE;
else if (strcmp (optarg, "shared") == 0
|| strcmp (optarg, "default") == 0)
input_flags.dynamic = TRUE;
else
einfo (_("%F%P: unrecognized -a option `%s'\n"), optarg);
break;
case OPTION_ASSERT:
/* FIXME: We just ignore these, but we should handle them. */
if (strcmp (optarg, "definitions") == 0)
;
else if (strcmp (optarg, "nodefinitions") == 0)
;
else if (strcmp (optarg, "nosymbolic") == 0)
;
else if (strcmp (optarg, "pure-text") == 0)
;
else
einfo (_("%F%P: unrecognized -assert option `%s'\n"), optarg);
break;
case 'A':
ldfile_add_arch (optarg);
break;
case 'b':
lang_add_target (optarg);
break;
case 'c':
ldfile_open_command_file (optarg);
parser_input = input_mri_script;
yyparse ();
break;
case OPTION_CALL_SHARED:
input_flags.dynamic = TRUE;
break;
case OPTION_NON_SHARED:
input_flags.dynamic = FALSE;
break;
case OPTION_CREF:
command_line.cref = TRUE;
link_info.notice_all = TRUE;
break;
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);
parser_input = input_defsym;
yyparse ();
lex_string = NULL;
break;
case OPTION_DEMANGLE:
demangling = TRUE;
if (optarg != NULL)
{
enum demangling_styles style;
style = cplus_demangle_name_to_style (optarg);
if (style == unknown_demangling)
einfo (_("%F%P: unknown demangling style `%s'\n"),
optarg);
cplus_demangle_set_style (style);
}
break;
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_EB:
command_line.endian = ENDIAN_BIG;
break;
case OPTION_EL:
command_line.endian = ENDIAN_LITTLE;
break;
case OPTION_EMBEDDED_RELOCS:
command_line.embedded_relocs = TRUE;
break;
case OPTION_EXPORT_DYNAMIC:
case 'E': /* HP/UX compatibility. */
link_info.export_dynamic = TRUE;
break;
case OPTION_NO_EXPORT_DYNAMIC:
link_info.export_dynamic = FALSE;
break;
case OPTION_NON_CONTIGUOUS_REGIONS:
link_info.non_contiguous_regions = TRUE;
break;
case OPTION_NON_CONTIGUOUS_REGIONS_WARNINGS:
link_info.non_contiguous_regions_warnings = TRUE;
break;
case 'e':
lang_add_entry (optarg, TRUE);
break;
case 'f':
if (command_line.auxiliary_filters == NULL)
{
command_line.auxiliary_filters = (char **)
xmalloc (2 * sizeof (char *));
command_line.auxiliary_filters[0] = optarg;
command_line.auxiliary_filters[1] = NULL;
}
else
{
int c;
char **p;
c = 0;
for (p = command_line.auxiliary_filters; *p != NULL; p++)
++c;
command_line.auxiliary_filters = (char **)
xrealloc (command_line.auxiliary_filters,
(c + 2) * sizeof (char *));
command_line.auxiliary_filters[c] = optarg;
command_line.auxiliary_filters[c + 1] = NULL;
}
break;
case 'F':
command_line.filter_shlib = optarg;
break;
case OPTION_FORCE_EXE_SUFFIX:
command_line.force_exe_suffix = TRUE;
break;
case 'G':
{
char *end;
g_switch_value = strtoul (optarg, &end, 0);
if (*end)
einfo (_("%F%P: invalid number `%s'\n"), optarg);
}
break;
case 'g':
/* Ignore. */
break;
case OPTION_GC_SECTIONS:
link_info.gc_sections = TRUE;
break;
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);
break;
case 'L':
ldfile_add_library_path (optarg, TRUE);
break;
case 'l':
lang_add_input_file (optarg, lang_input_file_is_l_enum, NULL);
break;
case 'M':
config.map_filename = "-";
break;
case 'm':
/* Ignore. Was handled in a pre-parse. */
break;
case OPTION_MAP:
config.map_filename = optarg;
break;
case 'N':
config.text_read_only = FALSE;
config.magic_demand_paged = FALSE;
input_flags.dynamic = FALSE;
break;
case OPTION_NO_OMAGIC:
config.text_read_only = TRUE;
config.magic_demand_paged = TRUE;
/* NB/ Does not set input_flags.dynamic to TRUE.
Use --call-shared or -Bdynamic for this. */
break;
case 'n':
config.text_read_only = TRUE;
config.magic_demand_paged = FALSE;
input_flags.dynamic = FALSE;
break;
case OPTION_NO_DEFINE_COMMON:
link_info.inhibit_common_definition = TRUE;
break;
case OPTION_NO_DEMANGLE:
demangling = FALSE;
break;
case OPTION_NO_GC_SECTIONS:
link_info.gc_sections = FALSE;
break;
case OPTION_NO_PRINT_GC_SECTIONS:
link_info.print_gc_sections = FALSE;
break;
case OPTION_NO_KEEP_MEMORY:
link_info.keep_memory = FALSE;
break;
case OPTION_NO_UNDEFINED:
link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
break;
case OPTION_ALLOW_SHLIB_UNDEFINED:
link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
break;
case OPTION_NO_ALLOW_SHLIB_UNDEFINED:
link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
break;
case OPTION_UNRESOLVED_SYMBOLS:
if (strcmp (optarg, "ignore-all") == 0)
{
link_info.unresolved_syms_in_objects = RM_IGNORE;
link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
}
else if (strcmp (optarg, "report-all") == 0)
{
link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
}
else if (strcmp (optarg, "ignore-in-object-files") == 0)
{
link_info.unresolved_syms_in_objects = RM_IGNORE;
link_info.unresolved_syms_in_shared_libs = RM_DIAGNOSE;
}
else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
{
link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
}
else
einfo (_("%F%P: bad --unresolved-symbols option: %s\n"), optarg);
break;
case OPTION_WARN_UNRESOLVED_SYMBOLS:
link_info.warn_unresolved_syms = TRUE;
break;
case OPTION_ERROR_UNRESOLVED_SYMBOLS:
link_info.warn_unresolved_syms = FALSE;
break;
case OPTION_ALLOW_MULTIPLE_DEFINITION:
link_info.allow_multiple_definition = TRUE;
break;
case OPTION_NO_UNDEFINED_VERSION:
link_info.allow_undefined_version = FALSE;
break;
case OPTION_DEFAULT_SYMVER:
link_info.create_default_symver = TRUE;
break;
case OPTION_DEFAULT_IMPORTED_SYMVER:
link_info.default_imported_symver = TRUE;
break;
case OPTION_NO_WARN_MISMATCH:
command_line.warn_mismatch = FALSE;
break;
case OPTION_NO_WARN_SEARCH_MISMATCH:
command_line.warn_search_mismatch = FALSE;
break;
case OPTION_NOINHIBIT_EXEC:
force_make_executable = TRUE;
break;
case OPTION_NOSTDLIB:
config.only_cmd_line_lib_dirs = TRUE;
break;
case OPTION_NO_WHOLE_ARCHIVE:
input_flags.whole_archive = FALSE;
break;
case 'O':
/* FIXME "-O<non-digits> <value>" used to set the address of
section <non-digits>. Was this for compatibility with
something, or can we create a new option to do that
(with a syntax similar to -defsym)?
getopt can't handle two args to an option without kludges. */
/* Enable optimizations of output files. */
link_info.optimize = strtoul (optarg, NULL, 0) ? TRUE : FALSE;
break;
case 'o':
lang_add_output (optarg, 0);
break;
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);
xexit (0);
break;
case OPTION_PRINT_OUTPUT_FORMAT:
command_line.print_output_format = TRUE;
break;
#if BFD_SUPPORTS_PLUGINS
case OPTION_PLUGIN:
plugin_opt_plugin (optarg);
break;
case OPTION_PLUGIN_OPT:
if (plugin_opt_plugin_arg (optarg))
einfo (_("%F%P: bad -plugin-opt option\n"));
break;
#endif /* BFD_SUPPORTS_PLUGINS */
case 'q':
link_info.emitrelocations = TRUE;
break;
case 'i':
case 'r':
if (optind == last_optind)
/* This can happen if the user put "-rpath,a" on the command
line. (Or something similar. The comma is important).
Getopt becomes confused and thinks that this is a -r option
but it cannot parse the text after the -r so it refuses to
increment the optind counter. Detect this case and issue
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(_("%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.type = type_relocatable;
config.build_constructors = FALSE;
config.magic_demand_paged = FALSE;
config.text_read_only = FALSE;
input_flags.dynamic = FALSE;
break;
case 'R':
/* The GNU linker traditionally uses -R to mean to include
only the symbols from a file. The Solaris linker uses -R
to set the path used by the runtime linker to find
libraries. This is the GNU linker -rpath argument. We
try to support both simultaneously by checking the file
named. If it is a directory, rather than a regular file,
we assume -rpath was meant. */
{
struct stat s;
if (stat (optarg, &s) >= 0
&& ! S_ISDIR (s.st_mode))
{
lang_add_input_file (optarg,
lang_input_file_is_symbols_only_enum,
NULL);
break;
}
}
/* Fall through. */
case OPTION_RPATH:
if (command_line.rpath == NULL)
command_line.rpath = xstrdup (optarg);
else
{
size_t rpath_len = strlen (command_line.rpath);
size_t optarg_len = strlen (optarg);
char *buf;
char *cp = command_line.rpath;
/* First see whether OPTARG is already in the path. */
do
{
if (strncmp (optarg, cp, optarg_len) == 0
&& (cp[optarg_len] == 0
|| cp[optarg_len] == config.rpath_separator))
/* We found it. */
break;
/* Not yet found. */
cp = strchr (cp, config.rpath_separator);
if (cp != NULL)
++cp;
}
while (cp != NULL);
if (cp == NULL)
{
buf = (char *) xmalloc (rpath_len + optarg_len + 2);
sprintf (buf, "%s%c%s", command_line.rpath,
config.rpath_separator, optarg);
free (command_line.rpath);
command_line.rpath = buf;
}
}
break;
case OPTION_RPATH_LINK:
if (command_line.rpath_link == NULL)
command_line.rpath_link = xstrdup (optarg);
else
{
char *buf;
buf = (char *) xmalloc (strlen (command_line.rpath_link)
+ strlen (optarg)
+ 2);
sprintf (buf, "%s%c%s", command_line.rpath_link,
config.rpath_separator, optarg);
free (command_line.rpath_link);
command_line.rpath_link = buf;
}
break;
case OPTION_NO_RELAX:
DISABLE_RELAXATION;
break;
case OPTION_RELAX:
ENABLE_RELAXATION;
break;
case OPTION_RETAIN_SYMBOLS_FILE:
add_keepsyms_file (optarg);
break;
case 'S':
link_info.strip = strip_debugger;
break;
case 's':
link_info.strip = strip_all;
break;
case OPTION_STRIP_DISCARDED:
link_info.strip_discarded = TRUE;
break;
case OPTION_NO_STRIP_DISCARDED:
link_info.strip_discarded = FALSE;
break;
case OPTION_DISABLE_MULTIPLE_DEFS_ABS:
link_info.prohibit_multiple_definition_absolute = TRUE;
break;
case OPTION_SHARED:
if (config.has_shared)
{
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_objects = RM_IGNORE;
if (link_info.unresolved_syms_in_shared_libs == RM_NOT_YET_SET)
link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
}
else
einfo (_("%F%P: -shared not supported\n"));
break;
case OPTION_PIE:
if (config.has_shared)
{
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 (_("%F%P: -pie not supported\n"));
break;
case 'h': /* Used on Solaris. */
case OPTION_SONAME:
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
|| strcmp (optarg, N_("descending")) == 0)
config.sort_common = sort_descending;
else if (strcmp (optarg, N_("ascending")) == 0)
config.sort_common = sort_ascending;
else
einfo (_("%F%P: invalid common section sorting option: %s\n"),
optarg);
break;
case OPTION_SORT_SECTION:
if (strcmp (optarg, N_("name")) == 0)
sort_section = by_name;
else if (strcmp (optarg, N_("alignment")) == 0)
sort_section = by_alignment;
else
einfo (_("%F%P: invalid section sorting option: %s\n"),
optarg);
break;
case OPTION_STATS:
config.stats = TRUE;
break;
case OPTION_SYMBOLIC:
opt_symbolic = symbolic;
break;
case OPTION_SYMBOLIC_FUNCTIONS:
opt_symbolic = symbolic_functions;
break;
case 't':
++trace_files;
break;
case 'T':
previous_script_handle = saved_script_handle;
ldfile_open_script_file (optarg);
parser_input = input_script;
yyparse ();
previous_script_handle = NULL;
break;
case OPTION_DEFAULT_SCRIPT:
command_line.default_script = optarg;
break;
case OPTION_SECTION_START:
{
char *optarg2;
char *sec_name;
int len;
/* Check for <something>=<somthing>... */
optarg2 = strchr (optarg, '=');
if (optarg2 == NULL)
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 (_("%F%P: missing argument(s) to option"
" \"--section-start\"\n"));
/* We must copy the section name as set_section_start
doesn't do it for us. */
len = optarg2 - optarg;
sec_name = (char *) xmalloc (len);
memcpy (sec_name, optarg, len - 1);
sec_name[len - 1] = 0;
/* Then set it... */
set_section_start (sec_name, optarg2);
}
break;
case OPTION_TARGET_HELP:
/* Mention any target specific options. */
ldemul_list_emulation_options (stdout);
exit (0);
case OPTION_TBSS:
set_segment_start (".bss", optarg);
break;
case OPTION_TDATA:
set_segment_start (".data", optarg);
break;
case OPTION_TTEXT:
set_segment_start (".text", optarg);
break;
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;
case OPTION_TASK_LINK:
link_info.task_link = TRUE;
/* Fall through. */
case OPTION_UR:
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;
input_flags.dynamic = FALSE;
break;
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);
else
config.unique_orphan_sections = TRUE;
break;
case OPTION_VERBOSE:
ldversion (1);
version_printed = TRUE;
verbose = TRUE;
overflow_cutoff_limit = -2;
if (optarg != NULL)
{
char *end;
int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0);
if (*end)
einfo (_("%F%P: invalid number `%s'\n"), optarg);
#if BFD_SUPPORTS_PLUGINS
report_plugin_symbols = level > 1;
#endif /* BFD_SUPPORTS_PLUGINS */
}
break;
case 'v':
ldversion (0);
version_printed = TRUE;
break;
case 'V':
ldversion (1);
version_printed = TRUE;
break;
case OPTION_VERSION:
ldversion (2);
xexit (0);
break;
case OPTION_VERSION_SCRIPT:
/* This option indicates a small script that only specifies
version information. 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_version_script;
yyparse ();
}
break;
case OPTION_VERSION_EXPORTS_SECTION:
/* This option records a version symbol to be applied to the
symbols listed for export to be found in the object files
.exports sections. */
command_line.version_exports_section = optarg;
break;
case OPTION_DYNAMIC_LIST_DATA:
opt_dynamic_list = dynamic_list_data;
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;
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;
break;
case OPTION_DYNAMIC_LIST:
/* This option indicates a small script that only specifies
a dynamic 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 = &link_info.dynamic_list;
yyparse ();
}
if (opt_dynamic_list != dynamic_list_data)
opt_dynamic_list = dynamic_list;
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;
break;
case OPTION_WARN_CONSTRUCTORS:
config.warn_constructors = TRUE;
break;
case OPTION_WARN_FATAL:
config.fatal_warnings = TRUE;
break;
case OPTION_NO_WARN_FATAL:
config.fatal_warnings = FALSE;
break;
case OPTION_WARN_MULTIPLE_GP:
config.warn_multiple_gp = TRUE;
break;
case OPTION_WARN_ONCE:
config.warn_once = TRUE;
break;
case OPTION_WARN_SECTION_ALIGN:
config.warn_section_align = TRUE;
break;
case OPTION_WARN_TEXTREL:
link_info.textrel_check = textrel_check_warning;
break;
case OPTION_WARN_ALTERNATE_EM:
link_info.warn_alternate_em = TRUE;
break;
case OPTION_WHOLE_ARCHIVE:
input_flags.whole_archive = TRUE;
break;
case OPTION_ADD_DT_NEEDED_FOR_DYNAMIC:
input_flags.add_DT_NEEDED_for_dynamic = TRUE;
break;
case OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC:
input_flags.add_DT_NEEDED_for_dynamic = FALSE;
break;
case OPTION_ADD_DT_NEEDED_FOR_REGULAR:
input_flags.add_DT_NEEDED_for_regular = TRUE;
break;
case OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR:
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;
case 'X':
link_info.discard = discard_l;
break;
case 'x':
link_info.discard = discard_all;
break;
case 'Y':
if (CONST_STRNEQ (optarg, "P,"))
optarg += 2;
free (default_dirlist);
default_dirlist = xstrdup (optarg);
break;
case 'y':
add_ysym (optarg);
break;
case OPTION_SPARE_DYNAMIC_TAGS:
link_info.spare_dynamic_tags = strtoul (optarg, NULL, 0);
break;
case OPTION_SPLIT_BY_RELOC:
if (optarg != NULL)
config.split_by_reloc = strtoul (optarg, NULL, 0);
else
config.split_by_reloc = 32768;
break;
case OPTION_SPLIT_BY_FILE:
if (optarg != NULL)
config.split_by_file = bfd_scan_vma (optarg, NULL, 0);
else
config.split_by_file = 1;
break;
case OPTION_CHECK_SECTIONS:
command_line.check_section_addresses = 1;
break;
case OPTION_NO_CHECK_SECTIONS:
command_line.check_section_addresses = 0;
break;
case OPTION_ACCEPT_UNKNOWN_INPUT_ARCH:
command_line.accept_unknown_input_arch = TRUE;
break;
case OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH:
command_line.accept_unknown_input_arch = FALSE;
break;
case '(':
lang_enter_group ();
ingroup++;
break;
case ')':
if (! ingroup)
einfo (_("%F%P: group ended before it began (--help for usage)\n"));
lang_leave_group ();
ingroup--;
break;
case OPTION_INIT:
link_info.init_function = optarg;
break;
case OPTION_FINI:
link_info.fini_function = optarg;
break;
case OPTION_REDUCE_MEMORY_OVERHEADS:
link_info.reduce_memory_overheads = TRUE;
if (config.hash_table_size == 0)
config.hash_table_size = 1021;
break;
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 (_("%X%P: --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 (_("%F%P: 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;
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;
case OPTION_NO_PRINT_MAP_DISCARDED:
config.print_map_discarded = FALSE;
break;
case OPTION_PRINT_MAP_DISCARDED:
config.print_map_discarded = TRUE;
break;
case OPTION_DEPENDENCY_FILE:
config.dependency_file = optarg;
break;
case OPTION_CTF_VARIABLES:
config.ctf_variables = TRUE;
break;
case OPTION_NO_CTF_VARIABLES:
config.ctf_variables = FALSE;
break;
case OPTION_CTF_SHARE_TYPES:
if (strcmp (optarg, "share-unconflicted") == 0)
config.ctf_share_duplicated = FALSE;
else if (strcmp (optarg, "share-duplicated") == 0)
config.ctf_share_duplicated = TRUE;
else
einfo (_("%F%P: bad --ctf-share-types option: %s\n"), optarg);
break;
}
}
/* 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"));
command_line.soname = NULL;
}
while (ingroup)
{
einfo (_("%P: missing --end-group; added as last command line option\n"));
lang_leave_group ();
ingroup--;
}
if (default_dirlist != NULL)
{
set_default_dirlist (default_dirlist);
free (default_dirlist);
}
if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET)
/* FIXME: Should we allow emulations a chance to set this ? */
link_info.unresolved_syms_in_objects = RM_DIAGNOSE;
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 = RM_DIAGNOSE;
if (bfd_link_relocatable (&link_info)
&& 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)
{
case symbolic_unset:
break;
case symbolic:
link_info.symbolic = TRUE;
if (link_info.dynamic_list)
{
struct bfd_elf_version_expr *ent, *next;
for (ent = link_info.dynamic_list->head.list; ent; ent = next)
{
next = ent->next;
free (ent);
}
free (link_info.dynamic_list);
link_info.dynamic_list = NULL;
}
break;
case symbolic_functions:
link_info.dynamic = TRUE;
link_info.dynamic_data = TRUE;
break;
}
if (!bfd_link_dll (&link_info))
{
if (command_line.filter_shlib)
einfo (_("%F%P: -F may not be used without -shared\n"));
if (command_line.auxiliary_filters)
einfo (_("%F%P: -f may not be used without -shared\n"));
}
/* 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 (bfd_link_relocatable (&link_info) && 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
library search path. */
static void
set_default_dirlist (char *dirlist_ptr)
{
char *p;
while (1)
{
p = strchr (dirlist_ptr, PATH_SEPARATOR);
if (p != NULL)
*p = '\0';
if (*dirlist_ptr != '\0')
ldfile_add_library_path (dirlist_ptr, TRUE);
if (p == NULL)
break;
dirlist_ptr = p + 1;
}
}
static void
set_section_start (char *sect, char *valstr)
{
const char *end;
bfd_vma val = bfd_scan_vma (valstr, &end, 16);
if (*end)
einfo (_("%F%P: invalid hex number `%s'\n"), valstr);
lang_section_start (sect, exp_intop (val), NULL);
}
static void
set_segment_start (const char *section, char *valstr)
{
const char *name;
const char *end;
segment_type *seg;
bfd_vma val = bfd_scan_vma (valstr, &end, 16);
if (*end)
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;
for (seg = segments; seg; seg = seg->next)
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
entry. */
seg = stat_alloc (sizeof (*seg));
seg->name = name;
seg->value = val;
seg->used = FALSE;
/* Add it to the linked list of segments. */
seg->next = segments;
segments = seg;
/* Historically, -Ttext and friends set the base address of a
particular section. For backwards compatibility, we still do
that. If a SEGMENT_START directive is seen, the section address
assignment will be disabled. */
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, _("\
--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/both. Default: "));
if (DEFAULT_EMIT_SYSV_HASH)
{
/* Note - these strings are not translated as
they are keywords not descriptive text. */
if (DEFAULT_EMIT_GNU_HASH)
fprintf (file, "both\n");
else
fprintf (file, "sysv\n");
}
else
{
if (DEFAULT_EMIT_GNU_HASH)
fprintf (file, "gnu\n");
else
/* FIXME: Can this happen ? */
fprintf (file, "none\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"));
#if DEFAULT_LD_Z_RELRO
fprintf (file, _("\
-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
#if DEFAULT_LD_Z_SEPARATE_CODE
fprintf (file, _("\
-z separate-code Create separate code program header (default)\n"));
fprintf (file, _("\
-z noseparate-code Don't create separate code program header\n"));
#else
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"));
#endif
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 stack-size=SIZE Set size of stack segment\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
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"));
fprintf (file, _("\
-z unique-symbol Avoid duplicated local symbol names\n"));
fprintf (file, _("\
-z nounique-symbol Keep duplicated local symbol names (default)\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"));
fprintf (file, _("\
--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);
}
/* Print help messages for the options. */
static void
help (void)
{
unsigned i;
const char **targets, **pp;
int len;
printf (_("Usage: %s [options] file...\n"), program_name);
printf (_("Options:\n"));
for (i = 0; i < OPTION_COUNT; i++)
{
if (ld_options[i].doc != NULL)
{
bfd_boolean comma;
unsigned j;
printf (" ");
comma = FALSE;
len = 2;
j = i;
do
{
if (ld_options[j].shortopt != '\0'
&& ld_options[j].control != NO_HELP)
{
printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt);
len += (comma ? 2 : 0) + 2;
if (ld_options[j].arg != NULL)
{
if (ld_options[j].opt.has_arg != optional_argument)
{
printf (" ");
++len;
}
printf ("%s", _(ld_options[j].arg));
len += strlen (_(ld_options[j].arg));
}
comma = TRUE;
}
++j;
}
while (j < OPTION_COUNT && ld_options[j].doc == NULL);
j = i;
do
{
if (ld_options[j].opt.name != NULL
&& ld_options[j].control != NO_HELP)
{
int two_dashes =
(ld_options[j].control == TWO_DASHES
|| ld_options[j].control == EXACTLY_TWO_DASHES);
printf ("%s-%s%s",
comma ? ", " : "",
two_dashes ? "-" : "",
ld_options[j].opt.name);
len += ((comma ? 2 : 0)
+ 1
+ (two_dashes ? 1 : 0)
+ strlen (ld_options[j].opt.name));
if (ld_options[j].arg != NULL)
{
printf (" %s", _(ld_options[j].arg));
len += 1 + strlen (_(ld_options[j].arg));
}
comma = TRUE;
}
++j;
}
while (j < OPTION_COUNT && ld_options[j].doc == NULL);
if (len >= 30)
{
printf ("\n");
len = 0;
}
for (; len < 30; len++)
putchar (' ');
printf ("%s\n", _(ld_options[i].doc));
}
}
printf (_(" @FILE"));
for (len = strlen (" @FILE"); len < 30; len++)
putchar (' ');
printf (_("Read options from FILE\n"));
/* Note: Various tools (such as libtool) depend upon the
format of the listings below - do not change them. */
/* xgettext:c-format */
printf (_("%s: supported targets:"), program_name);
targets = bfd_target_list ();
for (pp = targets; *pp != NULL; pp++)
printf (" %s", *pp);
free (targets);
printf ("\n");
/* xgettext:c-format */
printf (_("%s: supported emulations: "), program_name);
ldemul_list_emulations (stdout);
printf ("\n");
/* 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");
if (REPORT_BUGS_TO[0])
printf (_("Report bugs to %s\n"), REPORT_BUGS_TO);
}
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