diff options
Diffstat (limited to 'ld/lexsup.c')
| -rw-r--r-- | ld/lexsup.c | 1756 |
1 files changed, 1756 insertions, 0 deletions
diff --git a/ld/lexsup.c b/ld/lexsup.c new file mode 100644 index 0000000..4812c97 --- /dev/null +++ b/ld/lexsup.c @@ -0,0 +1,1756 @@ +/* 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 }, + { {"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 }, + { {"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_SYSROOT: + if (*ld_sysroot) + puts (ld_sysroot); + xexit (0); + break; + case OPTION_PRINT_OUTPUT_FORMAT: + command_line.print_output_format = TRUE; + break; +#ifdef ENABLE_PLUGINS + case OPTION_PLUGIN: + plugin_opt_plugin (optarg); + break; + case OPTION_PLUGIN_OPT: + if (plugin_opt_plugin_arg (optarg)) + einfo(_("%P%F: bad -plugin-opt option\n")); + break; +#endif /* ENABLE_PLUGINS */ + case 'q': + link_info.emitrelocations = TRUE; + break; + 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); +} |