/* Parse options for the GNU linker. Copyright (C) 1991-2015 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 }, { {"no-dynamic-linker", no_argument, NULL, OPTION_NO_DYNAMIC_LINKER}, '\0', NULL, N_("Produce an executable with no program interpreter header"), TWO_DASHES }, { {"library", required_argument, NULL, 'l'}, 'l', N_("LIBNAME"), N_("Search for library LIBNAME"), TWO_DASHES }, { {"library-path", required_argument, NULL, 'L'}, 'L', N_("DIRECTORY"), N_("Add DIRECTORY to library search path"), TWO_DASHES }, { {"sysroot=<DIRECTORY>", required_argument, NULL, OPTION_SYSROOT}, '\0', NULL, N_("Override the default sysroot location"), TWO_DASHES }, { {NULL, required_argument, NULL, '\0'}, 'm', N_("EMULATION"), N_("Set emulation"), ONE_DASH }, { {"print-map", no_argument, NULL, 'M'}, 'M', NULL, N_("Print map file on standard output"), TWO_DASHES }, { {"nmagic", no_argument, NULL, 'n'}, 'n', NULL, N_("Do not page align data"), TWO_DASHES }, { {"omagic", no_argument, NULL, 'N'}, 'N', NULL, N_("Do not page align data, do not make text readonly"), EXACTLY_TWO_DASHES }, { {"no-omagic", no_argument, NULL, OPTION_NO_OMAGIC}, '\0', NULL, N_("Page align data, make text readonly"), EXACTLY_TWO_DASHES }, { {"output", required_argument, NULL, 'o'}, 'o', N_("FILE"), N_("Set output file name"), EXACTLY_TWO_DASHES }, { {NULL, required_argument, NULL, '\0'}, 'O', NULL, N_("Optimize output file"), ONE_DASH }, #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 }, { {"map-whole-files", optional_argument, NULL, OPTION_IGNORE}, '\0', NULL, N_("Ignored for gold option compatibility"), TWO_DASHES }, { {"no-map-whole-files", optional_argument, NULL, OPTION_IGNORE}, '\0', NULL, N_("Ignored for gold option compatibility"), TWO_DASHES }, { {"Qy", no_argument, NULL, OPTION_IGNORE}, '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, { {"emit-relocs", no_argument, NULL, 'q'}, 'q', NULL, "Generate relocations in final output", TWO_DASHES }, { {"relocatable", no_argument, NULL, 'r'}, 'r', NULL, N_("Generate relocatable output"), TWO_DASHES }, { {NULL, no_argument, NULL, '\0'}, 'i', NULL, NULL, ONE_DASH }, { {"just-symbols", required_argument, NULL, 'R'}, 'R', N_("FILE"), N_("Just link symbols (if directory, same as --rpath)"), TWO_DASHES }, { {"strip-all", no_argument, NULL, 's'}, 's', NULL, N_("Strip all symbols"), TWO_DASHES }, { {"strip-debug", no_argument, NULL, 'S'}, 'S', NULL, N_("Strip debugging symbols"), TWO_DASHES }, { {"strip-discarded", no_argument, NULL, OPTION_STRIP_DISCARDED}, '\0', NULL, N_("Strip symbols in discarded sections"), TWO_DASHES }, { {"no-strip-discarded", no_argument, NULL, OPTION_NO_STRIP_DISCARDED}, '\0', NULL, N_("Do not strip symbols in discarded sections"), TWO_DASHES }, { {"trace", no_argument, NULL, 't'}, 't', NULL, N_("Trace file opens"), TWO_DASHES }, { {"script", required_argument, NULL, 'T'}, 'T', N_("FILE"), N_("Read linker script"), TWO_DASHES }, { {"default-script", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, '\0', N_("FILE"), N_("Read default linker script"), TWO_DASHES }, { {"dT", required_argument, NULL, OPTION_DEFAULT_SCRIPT}, '\0', NULL, NULL, ONE_DASH }, { {"undefined", required_argument, NULL, 'u'}, 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), TWO_DASHES }, { {"require-defined", required_argument, NULL, OPTION_REQUIRE_DEFINED_SYMBOL}, '\0', N_("SYMBOL"), N_("Require SYMBOL be defined in the final output"), TWO_DASHES }, { {"unique", optional_argument, NULL, OPTION_UNIQUE}, '\0', N_("[=SECTION]"), N_("Don't merge input [SECTION | orphan] sections"), TWO_DASHES }, { {"Ur", no_argument, NULL, OPTION_UR}, '\0', NULL, N_("Build global constructor/destructor tables"), ONE_DASH }, { {"version", no_argument, NULL, OPTION_VERSION}, 'v', NULL, N_("Print version information"), TWO_DASHES }, { {NULL, no_argument, NULL, '\0'}, 'V', NULL, N_("Print version and emulation information"), ONE_DASH }, { {"discard-all", no_argument, NULL, 'x'}, 'x', NULL, N_("Discard all local symbols"), TWO_DASHES }, { {"discard-locals", no_argument, NULL, 'X'}, 'X', NULL, N_("Discard temporary local symbols (default)"), TWO_DASHES }, { {"discard-none", no_argument, NULL, OPTION_DISCARD_NONE}, '\0', NULL, N_("Don't discard any local symbols"), TWO_DASHES }, { {"trace-symbol", required_argument, NULL, 'y'}, 'y', N_("SYMBOL"), N_("Trace mentions of SYMBOL"), TWO_DASHES }, { {NULL, required_argument, NULL, '\0'}, 'Y', N_("PATH"), N_("Default search path for Solaris compatibility"), ONE_DASH }, { {"start-group", no_argument, NULL, '('}, '(', NULL, N_("Start a group"), TWO_DASHES }, { {"end-group", no_argument, NULL, ')'}, ')', NULL, N_("End a group"), TWO_DASHES }, { {"accept-unknown-input-arch", no_argument, NULL, OPTION_ACCEPT_UNKNOWN_INPUT_ARCH}, '\0', NULL, N_("Accept input files whose architecture cannot be determined"), TWO_DASHES }, { {"no-accept-unknown-input-arch", no_argument, NULL, OPTION_NO_ACCEPT_UNKNOWN_INPUT_ARCH}, '\0', NULL, N_("Reject input files whose architecture is unknown"), TWO_DASHES }, /* The next two options are deprecated because of their similarity to --as-needed and --no-as-needed. They have been replaced by --copy-dt-needed-entries and --no-copy-dt-needed-entries. */ { {"add-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, '\0', NULL, NULL, NO_HELP }, { {"no-add-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, '\0', NULL, NULL, NO_HELP }, { {"as-needed", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_REGULAR}, '\0', NULL, N_("Only set DT_NEEDED for following dynamic libs if used"), TWO_DASHES }, { {"no-as-needed", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_REGULAR}, '\0', NULL, N_("Always set DT_NEEDED for dynamic libraries mentioned on\n" " the command line"), TWO_DASHES }, { {"assert", required_argument, NULL, OPTION_ASSERT}, '\0', N_("KEYWORD"), N_("Ignored for SunOS compatibility"), ONE_DASH }, { {"Bdynamic", no_argument, NULL, OPTION_CALL_SHARED}, '\0', NULL, N_("Link against shared libraries"), ONE_DASH }, { {"dy", no_argument, NULL, OPTION_CALL_SHARED}, '\0', NULL, NULL, ONE_DASH }, { {"call_shared", no_argument, NULL, OPTION_CALL_SHARED}, '\0', NULL, NULL, ONE_DASH }, { {"Bstatic", no_argument, NULL, OPTION_NON_SHARED}, '\0', NULL, N_("Do not link against shared libraries"), ONE_DASH }, { {"dn", no_argument, NULL, OPTION_NON_SHARED}, '\0', NULL, NULL, ONE_DASH }, { {"non_shared", no_argument, NULL, OPTION_NON_SHARED}, '\0', NULL, NULL, ONE_DASH }, { {"static", no_argument, NULL, OPTION_NON_SHARED}, '\0', NULL, NULL, ONE_DASH }, { {"Bsymbolic", no_argument, NULL, OPTION_SYMBOLIC}, '\0', NULL, N_("Bind global references locally"), ONE_DASH }, { {"Bsymbolic-functions", no_argument, NULL, OPTION_SYMBOLIC_FUNCTIONS}, '\0', NULL, N_("Bind global function references locally"), ONE_DASH }, { {"check-sections", no_argument, NULL, OPTION_CHECK_SECTIONS}, '\0', NULL, N_("Check section addresses for overlaps (default)"), TWO_DASHES }, { {"no-check-sections", no_argument, NULL, OPTION_NO_CHECK_SECTIONS}, '\0', NULL, N_("Do not check section addresses for overlaps"), TWO_DASHES }, { {"copy-dt-needed-entries", no_argument, NULL, OPTION_ADD_DT_NEEDED_FOR_DYNAMIC}, '\0', NULL, N_("Copy DT_NEEDED links mentioned inside DSOs that follow"), TWO_DASHES }, { {"no-copy-dt-needed-entries", no_argument, NULL, OPTION_NO_ADD_DT_NEEDED_FOR_DYNAMIC}, '\0', NULL, N_("Do not copy DT_NEEDED links mentioned inside DSOs that follow"), TWO_DASHES }, { {"cref", no_argument, NULL, OPTION_CREF}, '\0', NULL, N_("Output cross reference table"), TWO_DASHES }, { {"defsym", required_argument, NULL, OPTION_DEFSYM}, '\0', N_("SYMBOL=EXPRESSION"), N_("Define a symbol"), TWO_DASHES }, { {"demangle", optional_argument, NULL, OPTION_DEMANGLE}, '\0', N_("[=STYLE]"), N_("Demangle symbol names [using STYLE]"), TWO_DASHES }, { {"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 }, { {"print-memory-usage", no_argument, NULL, OPTION_PRINT_MEMORY_USAGE}, '\0', NULL, N_("Report target memory usage"), TWO_DASHES }, { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING}, '\0', N_("=MODE"), N_("Control how orphan sections are handled."), TWO_DASHES }, }; #define OPTION_COUNT ARRAY_SIZE (ld_options) 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; link_info.nointerp = 0; break; case OPTION_NO_DYNAMIC_LINKER: link_info.nointerp = 1; break; case OPTION_SYSROOT: /* Already handled in ldmain.c. */ break; case OPTION_EB: command_line.endian = ENDIAN_BIG; break; case OPTION_EL: command_line.endian = ENDIAN_LITTLE; break; case OPTION_EMBEDDED_RELOCS: command_line.embedded_relocs = TRUE; break; case OPTION_EXPORT_DYNAMIC: case 'E': /* HP/UX compatibility. */ link_info.export_dynamic = TRUE; break; case OPTION_NO_EXPORT_DYNAMIC: link_info.export_dynamic = FALSE; break; case '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: unrecognised option: %s\n"), argv[optind]); if (bfd_link_pic (&link_info)) einfo (_("%P%F: -r and %s may not be used together\n"), bfd_link_dll (&link_info) ? "-shared" : "-pie"); link_info.type = type_relocatable; config.build_constructors = FALSE; config.magic_demand_paged = FALSE; config.text_read_only = FALSE; 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) { if (bfd_link_relocatable (&link_info)) einfo (_("%P%F: -r and -shared may not be used together\n")); link_info.type = type_dll; /* When creating a shared library, the default behaviour is to ignore any unresolved references. */ if (link_info.unresolved_syms_in_objects == RM_NOT_YET_SET) 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) { if (bfd_link_relocatable (&link_info)) einfo (_("%P%F: -r and -pie may not be used together\n")); link_info.type = type_pie; } else einfo (_("%P%F: -pie not supported\n")); 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: if (bfd_link_pic (&link_info)) einfo (_("%P%F: -r and %s may not be used together\n"), bfd_link_dll (&link_info) ? "-shared" : "-pie"); link_info.type = type_relocatable; config.build_constructors = TRUE; config.magic_demand_paged = FALSE; config.text_read_only = FALSE; input_flags.dynamic = FALSE; break; case 'u': ldlang_add_undef (optarg, TRUE); break; case OPTION_REQUIRE_DEFINED_SYMBOL: ldlang_add_require_defined (optarg); break; case OPTION_UNIQUE: if (optarg != NULL) lang_add_unique (optarg); else config.unique_orphan_sections = TRUE; break; case OPTION_VERBOSE: ldversion (1); version_printed = TRUE; verbose = TRUE; overflow_cutoff_limit = -2; if (optarg != NULL) { char *end; int level ATTRIBUTE_UNUSED = strtoul (optarg, &end, 0); if (*end) einfo (_("%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; case OPTION_PRINT_MEMORY_USAGE: command_line.print_memory_usage = TRUE; break; case OPTION_ORPHAN_HANDLING: if (strcasecmp (optarg, "place") == 0) config.orphan_handling = orphan_handling_place; else if (strcasecmp (optarg, "warn") == 0) config.orphan_handling = orphan_handling_warn; else if (strcasecmp (optarg, "error") == 0) config.orphan_handling = orphan_handling_error; else if (strcasecmp (optarg, "discard") == 0) config.orphan_handling = orphan_handling_discard; else einfo (_("%P%F: invalid argument to option" " \"--orphan-handling\"\n")); break; } } 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 (bfd_link_relocatable (&link_info) && command_line.check_section_addresses < 0) command_line.check_section_addresses = 0; /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data, --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are for shared libraries. -Bsymbolic overrides all others and vice versa. */ switch (command_line.symbolic) { case symbolic_unset: break; case symbolic: /* -Bsymbolic is for shared library only. */ if (bfd_link_dll (&link_info)) { 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 (bfd_link_dll (&link_info)) 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 (!bfd_link_dll (&link_info)) { 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")); } /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I don't see how else this can be handled, since in this case we must preserve all externally visible symbols. */ if (bfd_link_relocatable (&link_info) && link_info.strip == strip_all) { link_info.strip = strip_debugger; if (link_info.discard == discard_sec_merge) link_info.discard = discard_all; } } /* Add the (colon-separated) elements of DIRLIST_PTR to the library search path. */ static void set_default_dirlist (char *dirlist_ptr) { char *p; while (1) { p = strchr (dirlist_ptr, PATH_SEPARATOR); if (p != NULL) *p = '\0'; if (*dirlist_ptr != '\0') ldfile_add_library_path (dirlist_ptr, TRUE); if (p == NULL) break; dirlist_ptr = p + 1; } } static void set_section_start (char *sect, char *valstr) { const char *end; bfd_vma val = bfd_scan_vma (valstr, &end, 16); if (*end) einfo (_("%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); } static void elf_shlib_list_options (FILE *file) { fprintf (file, _("\ --audit=AUDITLIB Specify a library to use for auditing\n")); fprintf (file, _("\ -Bgroup Selects group name lookup rules for DSO\n")); fprintf (file, _("\ --disable-new-dtags Disable new dynamic tags\n")); fprintf (file, _("\ --enable-new-dtags Enable new dynamic tags\n")); fprintf (file, _("\ --eh-frame-hdr Create .eh_frame_hdr section\n")); fprintf (file, _("\ --exclude-libs=LIBS Make all symbols in LIBS hidden\n")); fprintf (file, _("\ --hash-style=STYLE Set hash style to sysv, gnu or both\n")); fprintf (file, _("\ -P AUDITLIB, --depaudit=AUDITLIB\n" "\ Specify a library to use for auditing dependencies\n")); fprintf (file, _("\ -z combreloc Merge dynamic relocs into one section and sort\n")); fprintf (file, _("\ -z nocombreloc Don't merge dynamic relocs into one section\n")); fprintf (file, _("\ -z global Make symbols in DSO available for subsequently\n\ loaded objects\n")); fprintf (file, _("\ -z initfirst Mark DSO to be initialized first at runtime\n")); fprintf (file, _("\ -z interpose Mark object to interpose all DSOs but executable\n")); fprintf (file, _("\ -z lazy Mark object lazy runtime binding (default)\n")); fprintf (file, _("\ -z loadfltr Mark object requiring immediate process\n")); fprintf (file, _("\ -z nocopyreloc Don't create copy relocs\n")); fprintf (file, _("\ -z nodefaultlib Mark object not to use default search paths\n")); fprintf (file, _("\ -z nodelete Mark DSO non-deletable at runtime\n")); fprintf (file, _("\ -z nodlopen Mark DSO not available to dlopen\n")); fprintf (file, _("\ -z nodump Mark DSO not available to dldump\n")); fprintf (file, _("\ -z now Mark object non-lazy runtime binding\n")); fprintf (file, _("\ -z origin Mark object requiring immediate $ORIGIN\n\ processing at runtime\n")); fprintf (file, _("\ -z relro Create RELRO program header\n")); fprintf (file, _("\ -z norelro Don't create RELRO program header\n")); fprintf (file, _("\ -z stacksize=SIZE Set size of stack segment\n")); fprintf (file, _("\ -z text Treat DT_TEXTREL in shared object as error\n")); fprintf (file, _("\ -z notext Don't treat DT_TEXTREL in shared object as error\n")); fprintf (file, _("\ -z textoff Don't treat DT_TEXTREL in shared object as error\n")); } static void elf_static_list_options (FILE *file) { fprintf (file, _("\ --build-id[=STYLE] Generate build ID note\n")); fprintf (file, _("\ --compress-debug-sections=[none|zlib|zlib-gnu|zlib-gabi]\n\ Compress DWARF debug sections using zlib\n")); fprintf (file, _("\ -z common-page-size=SIZE Set common page size to SIZE\n")); fprintf (file, _("\ -z max-page-size=SIZE Set maximum page size to SIZE\n")); fprintf (file, _("\ -z defs Report unresolved symbols in object files.\n")); fprintf (file, _("\ -z muldefs Allow multiple definitions\n")); fprintf (file, _("\ -z execstack Mark executable as requiring executable stack\n")); fprintf (file, _("\ -z noexecstack Mark executable as not requiring executable stack\n")); } static void elf_plt_unwind_list_options (FILE *file) { fprintf (file, _("\ --ld-generated-unwind-info Generate exception handling info for PLT\n\ --no-ld-generated-unwind-info\n\ Don't generate exception handling info for PLT\n")); } static void ld_list_options (FILE *file, bfd_boolean elf, bfd_boolean shlib, bfd_boolean plt_unwind) { if (!elf) return; printf (_("ELF emulations:\n")); if (plt_unwind) elf_plt_unwind_list_options (file); elf_static_list_options (file); if (shlib) elf_shlib_list_options (file); } /* Print help messages for the options. */ static void help (void) { unsigned i; const char **targets, **pp; int len; printf (_("Usage: %s [options] file...\n"), program_name); printf (_("Options:\n")); for (i = 0; i < OPTION_COUNT; i++) { if (ld_options[i].doc != NULL) { bfd_boolean comma; unsigned j; printf (" "); comma = FALSE; len = 2; j = i; do { if (ld_options[j].shortopt != '\0' && ld_options[j].control != NO_HELP) { printf ("%s-%c", comma ? ", " : "", ld_options[j].shortopt); len += (comma ? 2 : 0) + 2; if (ld_options[j].arg != NULL) { if (ld_options[j].opt.has_arg != optional_argument) { printf (" "); ++len; } printf ("%s", _(ld_options[j].arg)); len += strlen (_(ld_options[j].arg)); } comma = TRUE; } ++j; } while (j < OPTION_COUNT && ld_options[j].doc == NULL); j = i; do { if (ld_options[j].opt.name != NULL && ld_options[j].control != NO_HELP) { int two_dashes = (ld_options[j].control == TWO_DASHES || ld_options[j].control == EXACTLY_TWO_DASHES); printf ("%s-%s%s", comma ? ", " : "", two_dashes ? "-" : "", ld_options[j].opt.name); len += ((comma ? 2 : 0) + 1 + (two_dashes ? 1 : 0) + strlen (ld_options[j].opt.name)); if (ld_options[j].arg != NULL) { printf (" %s", _(ld_options[j].arg)); len += 1 + strlen (_(ld_options[j].arg)); } comma = TRUE; } ++j; } while (j < OPTION_COUNT && ld_options[j].doc == NULL); if (len >= 30) { printf ("\n"); len = 0; } for (; len < 30; len++) putchar (' '); printf ("%s\n", _(ld_options[i].doc)); } } printf (_(" @FILE")); for (len = strlen (" @FILE"); len < 30; len++) putchar (' '); printf (_("Read options from FILE\n")); /* Note: Various tools (such as libtool) depend upon the format of the listings below - do not change them. */ /* xgettext:c-format */ printf (_("%s: supported targets:"), program_name); targets = bfd_target_list (); for (pp = targets; *pp != NULL; pp++) printf (" %s", *pp); free (targets); printf ("\n"); /* xgettext:c-format */ printf (_("%s: supported emulations: "), program_name); ldemul_list_emulations (stdout); printf ("\n"); /* xgettext:c-format */ printf (_("%s: emulation specific options:\n"), program_name); ld_list_options (stdout, ELF_LIST_OPTIONS, ELF_SHLIB_LIST_OPTIONS, ELF_PLT_UNWIND_LIST_OPTIONS); ldemul_list_emulation_options (stdout); printf ("\n"); if (REPORT_BUGS_TO[0]) printf (_("Report bugs to %s\n"), REPORT_BUGS_TO); }