| /* Parse options for the GNU linker. |
| Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 1999 |
| Free Software Foundation, Inc. |
| |
| This file is part of GLD, the Gnu Linker. |
| |
| GLD 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 2, or (at your option) |
| any later version. |
| |
| GLD 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 GLD; see the file COPYING. If not, write to the Free |
| Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
| 02111-1307, USA. */ |
| |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "libiberty.h" |
| #include <stdio.h> |
| #include <string.h> |
| #include <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" |
| |
| #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 |
| |
| /* Omit args to avoid the possibility of clashing with a system header |
| that might disagree about consts. */ |
| unsigned long strtoul (); |
| |
| static int is_num PARAMS ((const char *, int, int, int)); |
| static void set_default_dirlist PARAMS ((char *dirlist_ptr)); |
| static void set_section_start PARAMS ((char *sect, char *valstr)); |
| static void help PARAMS ((void)); |
| |
| /* Non-zero if we are processing a --defsym from the command line. */ |
| int parsing_defsym = 0; |
| |
| /* Codes used for the long options with no short synonyms. 150 isn't |
| special; it's just an arbitrary non-ASCII char value. */ |
| |
| #define OPTION_ASSERT 150 |
| #define OPTION_CALL_SHARED (OPTION_ASSERT + 1) |
| #define OPTION_CREF (OPTION_CALL_SHARED + 1) |
| #define OPTION_DEFSYM (OPTION_CREF + 1) |
| #define OPTION_DEMANGLE (OPTION_DEFSYM + 1) |
| #define OPTION_DYNAMIC_LINKER (OPTION_DEMANGLE + 1) |
| #define OPTION_EB (OPTION_DYNAMIC_LINKER + 1) |
| #define OPTION_EL (OPTION_EB + 1) |
| #define OPTION_EMBEDDED_RELOCS (OPTION_EL + 1) |
| #define OPTION_EXPORT_DYNAMIC (OPTION_EMBEDDED_RELOCS + 1) |
| #define OPTION_HELP (OPTION_EXPORT_DYNAMIC + 1) |
| #define OPTION_IGNORE (OPTION_HELP + 1) |
| #define OPTION_MAP (OPTION_IGNORE + 1) |
| #define OPTION_NO_DEMANGLE (OPTION_MAP + 1) |
| #define OPTION_NO_KEEP_MEMORY (OPTION_NO_DEMANGLE + 1) |
| #define OPTION_NO_WARN_MISMATCH (OPTION_NO_KEEP_MEMORY + 1) |
| #define OPTION_NOINHIBIT_EXEC (OPTION_NO_WARN_MISMATCH + 1) |
| #define OPTION_NON_SHARED (OPTION_NOINHIBIT_EXEC + 1) |
| #define OPTION_NO_WHOLE_ARCHIVE (OPTION_NON_SHARED + 1) |
| #define OPTION_OFORMAT (OPTION_NO_WHOLE_ARCHIVE + 1) |
| #define OPTION_RELAX (OPTION_OFORMAT + 1) |
| #define OPTION_RETAIN_SYMBOLS_FILE (OPTION_RELAX + 1) |
| #define OPTION_RPATH (OPTION_RETAIN_SYMBOLS_FILE + 1) |
| #define OPTION_RPATH_LINK (OPTION_RPATH + 1) |
| #define OPTION_SHARED (OPTION_RPATH_LINK + 1) |
| #define OPTION_SONAME (OPTION_SHARED + 1) |
| #define OPTION_SORT_COMMON (OPTION_SONAME + 1) |
| #define OPTION_STATS (OPTION_SORT_COMMON + 1) |
| #define OPTION_SYMBOLIC (OPTION_STATS + 1) |
| #define OPTION_TASK_LINK (OPTION_SYMBOLIC + 1) |
| #define OPTION_TBSS (OPTION_TASK_LINK + 1) |
| #define OPTION_TDATA (OPTION_TBSS + 1) |
| #define OPTION_TTEXT (OPTION_TDATA + 1) |
| #define OPTION_TRADITIONAL_FORMAT (OPTION_TTEXT + 1) |
| #define OPTION_UR (OPTION_TRADITIONAL_FORMAT + 1) |
| #define OPTION_VERBOSE (OPTION_UR + 1) |
| #define OPTION_VERSION (OPTION_VERBOSE + 1) |
| #define OPTION_VERSION_SCRIPT (OPTION_VERSION + 1) |
| #define OPTION_VERSION_EXPORTS_SECTION (OPTION_VERSION_SCRIPT + 1) |
| #define OPTION_WARN_COMMON (OPTION_VERSION_EXPORTS_SECTION + 1) |
| #define OPTION_WARN_CONSTRUCTORS (OPTION_WARN_COMMON + 1) |
| #define OPTION_WARN_MULTIPLE_GP (OPTION_WARN_CONSTRUCTORS + 1) |
| #define OPTION_WARN_ONCE (OPTION_WARN_MULTIPLE_GP + 1) |
| #define OPTION_WARN_SECTION_ALIGN (OPTION_WARN_ONCE + 1) |
| #define OPTION_SPLIT_BY_RELOC (OPTION_WARN_SECTION_ALIGN + 1) |
| #define OPTION_SPLIT_BY_FILE (OPTION_SPLIT_BY_RELOC + 1) |
| #define OPTION_WHOLE_ARCHIVE (OPTION_SPLIT_BY_FILE + 1) |
| #define OPTION_WRAP (OPTION_WHOLE_ARCHIVE + 1) |
| #define OPTION_FORCE_EXE_SUFFIX (OPTION_WRAP + 1) |
| #define OPTION_GC_SECTIONS (OPTION_FORCE_EXE_SUFFIX + 1) |
| #define OPTION_NO_GC_SECTIONS (OPTION_GC_SECTIONS + 1) |
| #define OPTION_CHECK_SECTIONS (OPTION_NO_GC_SECTIONS + 1) |
| #define OPTION_NO_CHECK_SECTIONS (OPTION_CHECK_SECTIONS + 1) |
| #define OPTION_MPC860C0 (OPTION_NO_CHECK_SECTIONS + 1) |
| #define OPTION_NO_UNDEFINED (OPTION_MPC860C0 + 1) |
| #define OPTION_INIT (OPTION_NO_UNDEFINED + 1) |
| #define OPTION_FINI (OPTION_INIT + 1) |
| |
| /* The long options. This structure is used for both the option |
| parsing and the help text. */ |
| |
| 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 |
| { |
| /* Use one dash before long option name. */ |
| ONE_DASH, |
| /* Use two dashes before long option name. */ |
| TWO_DASHES, |
| /* Don't mention this option in --help output. */ |
| NO_HELP |
| } 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 }, |
| { {"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 }, |
| { {"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 }, |
| { {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"), |
| TWO_DASHES }, |
| { {"output", required_argument, NULL, 'o'}, |
| 'o', N_("FILE"), N_("Set output file name"), TWO_DASHES }, |
| { {NULL, required_argument, NULL, '\0'}, |
| 'O', NULL, N_("Optimize output file"), ONE_DASH }, |
| { {"Qy", no_argument, NULL, OPTION_IGNORE}, |
| '\0', NULL, N_("Ignored for SVR4 compatibility"), ONE_DASH }, |
| { {"relocateable", no_argument, NULL, 'r'}, |
| 'r', NULL, N_("Generate relocateable 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 }, |
| { {"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 }, |
| { {"undefined", required_argument, NULL, 'u'}, |
| 'u', N_("SYMBOL"), N_("Start with undefined reference to SYMBOL"), 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"), 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 }, |
| { {NULL, required_argument, NULL, '\0'}, |
| 'z', N_("KEYWORD"), N_("Ignored 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 }, |
| { {"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 }, |
| { {"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 }, |
| { {"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", no_argument, NULL, OPTION_DEMANGLE}, |
| '\0', NULL, N_("Demangle symbol names"), TWO_DASHES }, |
| { {"dynamic-linker", required_argument, NULL, OPTION_DYNAMIC_LINKER}, |
| '\0', N_("PROGRAM"), N_("Set the dynamic linker to use"), TWO_DASHES }, |
| { {"embedded-relocs", no_argument, NULL, OPTION_EMBEDDED_RELOCS}, |
| '\0', NULL, N_("Generate embedded relocs"), 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 }, |
| { {"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-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_("Allow no undefined 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-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 }, |
| { {"oformat", required_argument, NULL, OPTION_OFORMAT}, |
| '\0', N_("TARGET"), N_("Specify target of output file"), TWO_DASHES }, |
| { {"qmagic", no_argument, NULL, OPTION_IGNORE}, |
| '\0', NULL, N_("Ignored for Linux compatibility"), ONE_DASH }, |
| { {"relax", no_argument, NULL, OPTION_RELAX}, |
| '\0', NULL, N_("Relax branches on certain targets"), 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 }, |
| { {"sort-common", no_argument, NULL, OPTION_SORT_COMMON}, |
| '\0', NULL, N_("Sort common symbols by size"), TWO_DASHES }, |
| { {"sort_common", no_argument, NULL, OPTION_SORT_COMMON}, |
| '\0', NULL, NULL, NO_HELP }, |
| { {"split-by-file", no_argument, NULL, OPTION_SPLIT_BY_FILE}, |
| '\0', NULL, N_("Split output sections for each file"), TWO_DASHES }, |
| { {"split-by-reloc", required_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 }, |
| { {"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 }, |
| { {"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 }, |
| { {"verbose", no_argument, NULL, OPTION_VERBOSE}, |
| '\0', NULL, 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\t\t\t\tSYMBOL as the version."), |
| 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 }, |
| { {"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 }, |
| { {"mpc860c0", optional_argument, NULL, OPTION_MPC860C0}, |
| '\0', N_("[=WORDS]"), N_("Modify problematic branches in last WORDS (1-10,\n\t\t\t\tdefault 5) words of a page"), TWO_DASHES } |
| }; |
| |
| #define OPTION_COUNT ((int) (sizeof ld_options / sizeof ld_options[0])) |
| |
| /* Test STRING for containing a string of digits that form a number |
| between MIN and MAX. The return value is the number or ERR. */ |
| |
| static int |
| is_num (string, min, max, err) |
| const char *string; |
| int min; |
| int max; |
| int err; |
| { |
| int result = 0; |
| |
| for (; *string; ++string) |
| { |
| if (! isdigit (*string)) |
| { |
| result = err; |
| break; |
| } |
| result = result * 10 + (*string - '0'); |
| } |
| if (result < min || result > max) |
| result = err; |
| |
| return result; |
| } |
| |
| void |
| parse_args (argc, argv) |
| int argc; |
| char **argv; |
| { |
| int i, is, il; |
| int ingroup = 0; |
| char *default_dirlist = NULL; |
| char shortopts[OPTION_COUNT * 3 + 2]; |
| struct option longopts[OPTION_COUNT + 1]; |
| int last_optind; |
| |
| /* 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; |
| 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) |
| { |
| longopts[il] = ld_options[i].opt; |
| ++il; |
| } |
| } |
| shortopts[is] = '\0'; |
| longopts[il].name = NULL; |
| |
| /* 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 ((unsigned char) 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; |
| |
| /* 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; |
| last_optind = optind; |
| } |
| |
| /* getopt_long_only is like getopt_long, but '-' as well as '--' |
| can indicate a long option. */ |
| optc = getopt_long_only (argc, argv, shortopts, longopts, &longind); |
| |
| if (optc == -1) |
| break; |
| switch (optc) |
| { |
| default: |
| fprintf (stderr, |
| _("%s: use the --help option for usage information\n"), |
| program_name); |
| xexit (1); |
| case 1: /* File name. */ |
| lang_add_input_file (optarg, lang_input_file_is_file_enum, |
| (char *) 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) |
| config.dynamic_link = false; |
| else if (strcmp (optarg, "shared") == 0 |
| || strcmp (optarg, "default") == 0) |
| config.dynamic_link = 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: |
| config.dynamic_link = true; |
| break; |
| case OPTION_NON_SHARED: |
| config.dynamic_link = 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); |
| parser_input = input_defsym; |
| parsing_defsym = 1; |
| yyparse (); |
| parsing_defsym = 0; |
| lex_string = NULL; |
| break; |
| case OPTION_DEMANGLE: |
| demangling = true; |
| break; |
| case OPTION_DYNAMIC_LINKER: |
| command_line.interpreter = optarg; |
| 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. */ |
| command_line.export_dynamic = true; |
| break; |
| case 'e': |
| lang_add_entry (optarg, true); |
| break; |
| case 'f': |
| if (command_line.auxiliary_filters == NULL) |
| { |
| command_line.auxiliary_filters = |
| (char **) xmalloc (2 * sizeof (char *)); |
| command_line.auxiliary_filters[0] = optarg; |
| command_line.auxiliary_filters[1] = NULL; |
| } |
| else |
| { |
| int c; |
| char **p; |
| |
| c = 0; |
| for (p = command_line.auxiliary_filters; *p != NULL; p++) |
| ++c; |
| command_line.auxiliary_filters = |
| (char **) xrealloc (command_line.auxiliary_filters, |
| (c + 2) * sizeof (char *)); |
| command_line.auxiliary_filters[c] = optarg; |
| command_line.auxiliary_filters[c + 1] = NULL; |
| } |
| break; |
| case 'F': |
| command_line.filter_shlib = optarg; |
| break; |
| case OPTION_FORCE_EXE_SUFFIX: |
| command_line.force_exe_suffix = true; |
| break; |
| case 'G': |
| { |
| char *end; |
| g_switch_value = strtoul (optarg, &end, 0); |
| if (*end) |
| einfo (_("%P%F: invalid number `%s'\n"), optarg); |
| } |
| break; |
| case 'g': |
| /* Ignore. */ |
| break; |
| case OPTION_GC_SECTIONS: |
| command_line.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, |
| (char *) 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; |
| config.dynamic_link = false; |
| break; |
| case 'n': |
| config.magic_demand_paged = false; |
| config.dynamic_link = false; |
| break; |
| case OPTION_NO_DEMANGLE: |
| demangling = false; |
| break; |
| case OPTION_NO_GC_SECTIONS: |
| command_line.gc_sections = false; |
| break; |
| case OPTION_NO_KEEP_MEMORY: |
| link_info.keep_memory = false; |
| break; |
| case OPTION_NO_UNDEFINED: |
| link_info.no_undefined = true; |
| break; |
| case OPTION_NO_WARN_MISMATCH: |
| command_line.warn_mismatch = false; |
| break; |
| case OPTION_NOINHIBIT_EXEC: |
| force_make_executable = true; |
| break; |
| case OPTION_NO_WHOLE_ARCHIVE: |
| 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, (char *) NULL, (char *) NULL, 0); |
| break; |
| case 'i': |
| case 'r': |
| link_info.relocateable = true; |
| config.build_constructors = false; |
| config.magic_demand_paged = false; |
| config.text_read_only = false; |
| config.dynamic_link = 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, |
| (char *) NULL); |
| break; |
| } |
| } |
| /* Fall through. */ |
| case OPTION_RPATH: |
| if (command_line.rpath == NULL) |
| command_line.rpath = buystring (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 |
| { |
| size_t idx = 0; |
| while (optarg[idx] != '\0' && optarg[idx] == cp[idx]) |
| ++idx; |
| if (optarg[idx] == '\0' |
| && (cp[idx] == '\0' || cp[idx] == ':')) |
| /* We found it. */ |
| break; |
| |
| /* Not yet found. */ |
| cp = strchr (cp, ':'); |
| if (cp != NULL) |
| ++cp; |
| } |
| while (cp != NULL); |
| |
| if (cp == NULL) |
| { |
| buf = xmalloc (rpath_len + optarg_len + 2); |
| sprintf (buf, "%s:%s", command_line.rpath, optarg); |
| free (command_line.rpath); |
| command_line.rpath = buf; |
| } |
| } |
| break; |
| case OPTION_RPATH_LINK: |
| if (command_line.rpath_link == NULL) |
| command_line.rpath_link = buystring (optarg); |
| else |
| { |
| char *buf; |
| |
| buf = xmalloc (strlen (command_line.rpath_link) |
| + strlen (optarg) |
| + 2); |
| sprintf (buf, "%s:%s", command_line.rpath_link, optarg); |
| free (command_line.rpath_link); |
| command_line.rpath_link = buf; |
| } |
| break; |
| case OPTION_RELAX: |
| command_line.relax = true; |
| 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_SHARED: |
| if (config.has_shared) |
| link_info.shared = true; |
| else |
| einfo (_("%P%F: -shared not supported\n")); |
| break; |
| case 'h': /* Used on Solaris. */ |
| case OPTION_SONAME: |
| command_line.soname = optarg; |
| break; |
| case OPTION_SORT_COMMON: |
| config.sort_common = true; |
| break; |
| case OPTION_STATS: |
| config.stats = true; |
| break; |
| case OPTION_SYMBOLIC: |
| link_info.symbolic = true; |
| break; |
| case 't': |
| trace_files = true; |
| break; |
| case 'T': |
| ldfile_open_command_file (optarg); |
| parser_input = input_script; |
| yyparse (); |
| break; |
| case OPTION_TBSS: |
| set_section_start (".bss", optarg); |
| break; |
| case OPTION_TDATA: |
| set_section_start (".data", optarg); |
| break; |
| case OPTION_TTEXT: |
| set_section_start (".text", 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.relocateable = true; |
| config.build_constructors = true; |
| config.magic_demand_paged = false; |
| config.text_read_only = false; |
| config.dynamic_link = false; |
| break; |
| case 'u': |
| ldlang_add_undef (optarg); |
| break; |
| case OPTION_VERBOSE: |
| ldversion (1); |
| version_printed = true; |
| trace_file_tries = true; |
| break; |
| case 'v': |
| ldversion (0); |
| version_printed = true; |
| break; |
| case 'V': |
| ldversion (1); |
| version_printed = true; |
| break; |
| case OPTION_VERSION: |
| /* This output is intended to follow the GNU standards document. */ |
| printf ("GNU ld %s\n", ld_program_version); |
| printf (_("Copyright 1997 Free Software Foundation, Inc.\n")); |
| printf (_("\ |
| This program is free software; you may redistribute it under the terms of\n\ |
| the GNU General Public License. This program has absolutely no warranty.\n")); |
| { |
| ld_emulation_xfer_type **ptr = ld_emulations; |
| |
| printf (_(" Supported emulations:\n")); |
| while (*ptr) |
| { |
| printf (" %s\n", (*ptr)->emulation_name); |
| ptr++; |
| } |
| } |
| 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. */ |
| { |
| boolean hold_had_script; |
| |
| hold_had_script = had_script; |
| ldfile_open_command_file (optarg); |
| had_script = hold_had_script; |
| 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_WARN_COMMON: |
| config.warn_common = true; |
| break; |
| case OPTION_WARN_CONSTRUCTORS: |
| config.warn_constructors = true; |
| 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_WHOLE_ARCHIVE: |
| whole_archive = true; |
| break; |
| case OPTION_WRAP: |
| add_wrap (optarg); |
| break; |
| case 'X': |
| link_info.discard = discard_l; |
| break; |
| case 'x': |
| link_info.discard = discard_all; |
| break; |
| case 'Y': |
| if (strncmp (optarg, "P,", 2) == 0) |
| optarg += 2; |
| default_dirlist = xstrdup (optarg); |
| break; |
| case 'y': |
| add_ysym (optarg); |
| break; |
| case 'z': |
| /* We accept and ignore this option for Solaris |
| compatibility. Actually, on Solaris, optarg is not |
| ignored. Someday we should handle it correctly. FIXME. */ |
| break; |
| case OPTION_SPLIT_BY_RELOC: |
| config.split_by_reloc = strtoul (optarg, NULL, 0); |
| break; |
| case OPTION_SPLIT_BY_FILE: |
| config.split_by_file = true; |
| break; |
| case OPTION_CHECK_SECTIONS: |
| command_line.check_section_addresses = true; |
| break; |
| case OPTION_NO_CHECK_SECTIONS: |
| command_line.check_section_addresses = false; |
| break; |
| case '(': |
| if (ingroup) |
| { |
| fprintf (stderr, |
| _("%s: may not nest groups (--help for usage)\n"), |
| program_name); |
| xexit (1); |
| } |
| lang_enter_group (); |
| ingroup = 1; |
| break; |
| case ')': |
| if (! ingroup) |
| { |
| fprintf (stderr, |
| _("%s: group ended before it began (--help for usage)\n"), |
| program_name); |
| xexit (1); |
| } |
| lang_leave_group (); |
| ingroup = 0; |
| break; |
| case OPTION_MPC860C0: |
| link_info.mpc860c0 = 20; /* default value (in bytes) */ |
| if (optarg) |
| { |
| unsigned words; |
| |
| words = is_num (optarg, 1, 10, 0); |
| if (words == 0) |
| { |
| fprintf (stderr, |
| _("%s: Invalid argument to option \"mpc860c0\"\n"), |
| program_name); |
| xexit (1); |
| } |
| link_info.mpc860c0 = words * 4; /* convert words to bytes */ |
| } |
| command_line.relax = true; |
| break; |
| |
| case OPTION_INIT: |
| link_info.init_function = optarg; |
| break; |
| |
| case OPTION_FINI: |
| link_info.fini_function = optarg; |
| break; |
| } |
| } |
| |
| if (ingroup) |
| lang_leave_group (); |
| |
| if (default_dirlist != NULL) |
| set_default_dirlist (default_dirlist); |
| |
| } |
| |
| /* Add the (colon-separated) elements of DIRLIST_PTR to the |
| library search path. */ |
| |
| static void |
| set_default_dirlist (dirlist_ptr) |
| 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 (sect, valstr) |
| char *sect, *valstr; |
| { |
| char *end; |
| unsigned long val = strtoul (valstr, &end, 16); |
| if (*end) |
| einfo (_("%P%F: invalid hex number `%s'\n"), valstr); |
| lang_section_start (sect, exp_intop (val)); |
| } |
| |
| /* Print help messages for the options. */ |
| |
| static void |
| help () |
| { |
| int i; |
| const char **targets, **pp; |
| |
| printf (_("Usage: %s [options] file...\n"), program_name); |
| |
| printf (_("Options:\n")); |
| for (i = 0; i < OPTION_COUNT; i++) |
| { |
| if (ld_options[i].doc != NULL) |
| { |
| boolean comma; |
| int len; |
| int 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) |
| { |
| printf ("%s-%s%s", |
| comma ? ", " : "", |
| ld_options[j].control == TWO_DASHES ? "-" : "", |
| ld_options[j].opt.name); |
| len += ((comma ? 2 : 0) |
| + 1 |
| + (ld_options[j].control == 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)); |
| } |
| } |
| |
| /* 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"); |
| |
| printf (_("\nReport bugs to bug-gnu-utils@gnu.org\n")); |
| } |