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binutils-gdb/ld/lexsup.c
Ulrich Drepper 26278bb871 * ldlang.h (struct lang_input_statement_flags): Add pushed 
member.
        * ldlex.h (enum option_values): Add OPTION_PUSH_STATE and
        OPTION_POP_STATE.
        * lexsup.c (ld_options): Add entries for --push-state and
        --pop-state.
        (parse_args): Handle OPTION_PUSH_STATE and OPTION_POP_STATE.
        * ld.texinfo: Document --push-state and --pop-state.
2014-08-08 20:26:41 -04:00

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/* Parse options for the GNU linker.
Copyright (C) 1991-2014 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 "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"
#ifdef ENABLE_PLUGINS
#include "plugin.h"
#endif /* ENABLE_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,
/* Use two dashes before long option name. */
TWO_DASHES,
/* 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 },
{ {"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 },
{ {"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 },
{ {"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 },
#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'},
'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 },
{ {"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 },
{ {"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 },
{ {"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"), N_("Write a map file"), 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 },
{ {"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 },
{ {"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-shared-textrel", no_argument, NULL, OPTION_WARN_SHARED_TEXTREL},
'\0', NULL, N_("Warn if shared object has DT_TEXTREL"),
TWO_DASHES },
{ {"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 },
};
#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 report_method how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
shortopts = (char *) xmalloc (OPTION_COUNT * 3 + 2);
longopts = (struct option *)
xmalloc (sizeof (*longopts) * (OPTION_COUNT + 1));
really_longopts = (struct option *)
malloc (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 '?':
einfo (_("%P: unrecognized option '%s'\n"), argv[last_optind]);
/* Fall through. */
default:
einfo (_("%P%F: use the --help option for usage information\n"));
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 (_("%P%F: 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 (_("%P%F: 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_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;
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 '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 (_("%P%F: 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_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.magic_demand_paged = FALSE;
input_flags.dynamic = FALSE;
break;
case OPTION_NO_DEFINE_COMMON:
command_line.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
= how_to_report_unresolved_symbols;
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
= how_to_report_unresolved_symbols;
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
= how_to_report_unresolved_symbols;
link_info.unresolved_syms_in_shared_libs
= how_to_report_unresolved_symbols;
}
else if (strcmp (optarg, "ignore-in-object-files") == 0)
{
link_info.unresolved_syms_in_objects = RM_IGNORE;
link_info.unresolved_syms_in_shared_libs
= how_to_report_unresolved_symbols;
}
else if (strcmp (optarg, "ignore-in-shared-libs") == 0)
{
link_info.unresolved_syms_in_objects
= how_to_report_unresolved_symbols;
link_info.unresolved_syms_in_shared_libs = RM_IGNORE;
}
else
einfo (_("%P%F: bad --unresolved-symbols option: %s\n"), optarg);
break;
case OPTION_WARN_UNRESOLVED_SYMBOLS:
how_to_report_unresolved_symbols = RM_GENERATE_WARNING;
if (link_info.unresolved_syms_in_objects == RM_GENERATE_ERROR)
link_info.unresolved_syms_in_objects = RM_GENERATE_WARNING;
if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_ERROR)
link_info.unresolved_syms_in_shared_libs = RM_GENERATE_WARNING;
break;
case OPTION_ERROR_UNRESOLVED_SYMBOLS:
how_to_report_unresolved_symbols = RM_GENERATE_ERROR;
if (link_info.unresolved_syms_in_objects == RM_GENERATE_WARNING)
link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
if (link_info.unresolved_syms_in_shared_libs == RM_GENERATE_WARNING)
link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
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_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;
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(_("%P%F: bad -rpath option\n"));
link_info.relocatable = TRUE;
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_SHARED:
if (config.has_shared)
{
link_info.shared = TRUE;
/* 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 (_("%P%F: -shared not supported\n"));
break;
case OPTION_PIE:
if (config.has_shared)
{
link_info.shared = TRUE;
link_info.pie = TRUE;
}
else
einfo (_("%P%F: -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 (_("%P%F: 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 (_("%P%F: invalid section sorting option: %s\n"),
optarg);
break;
case OPTION_STATS:
config.stats = TRUE;
break;
case OPTION_SYMBOLIC:
command_line.symbolic = symbolic;
break;
case OPTION_SYMBOLIC_FUNCTIONS:
command_line.symbolic = symbolic_functions;
break;
case 't':
trace_files = TRUE;
break;
case 'T':
previous_script_handle = saved_script_handle;
ldfile_open_command_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 (_("%P%F: invalid argument to option"
" \"--section-start\"\n"));
optarg2++;
/* So far so good. Are all the args present? */
if ((*optarg == '\0') || (*optarg2 == '\0'))
einfo (_("%P%F: missing argument(s) to option"
" \"--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 - do an implied -r option. */
case OPTION_UR:
link_info.relocatable = TRUE;
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_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 (_("%P%F: invalid number `%s'\n"), optarg);
#ifdef ENABLE_PLUGINS
report_plugin_symbols = level > 1;
#endif /* ENABLE_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:
command_line.dynamic_list = dynamic_list_data;
if (command_line.symbolic == symbolic)
command_line.symbolic = symbolic_unset;
break;
case OPTION_DYNAMIC_LIST_CPP_TYPEINFO:
lang_append_dynamic_list_cpp_typeinfo ();
if (command_line.dynamic_list != dynamic_list_data)
command_line.dynamic_list = dynamic_list;
if (command_line.symbolic == symbolic)
command_line.symbolic = symbolic_unset;
break;
case OPTION_DYNAMIC_LIST_CPP_NEW:
lang_append_dynamic_list_cpp_new ();
if (command_line.dynamic_list != dynamic_list_data)
command_line.dynamic_list = dynamic_list;
if (command_line.symbolic == symbolic)
command_line.symbolic = symbolic_unset;
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;
yyparse ();
}
if (command_line.dynamic_list != dynamic_list_data)
command_line.dynamic_list = dynamic_list;
if (command_line.symbolic == symbolic)
command_line.symbolic = symbolic_unset;
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_SHARED_TEXTREL:
link_info.warn_shared_textrel = TRUE;
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;
if (default_dirlist != NULL)
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 (_("%P%F: 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 (_("%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 (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)
{
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 = how_to_report_unresolved_symbols;
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
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 (_("%P%F: 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 (_("%P%F: 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;
return;
}
/* There was no existing value so we must create a new segment
entry. */
seg = (segment_type *) 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);
}
/* 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);
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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