diff options
Diffstat (limited to 'ld/lexsup.c')
| -rw-r--r-- | ld/lexsup.c | 1140 |
1 files changed, 1140 insertions, 0 deletions
diff --git a/ld/lexsup.c b/ld/lexsup.c new file mode 100644 index 00000000000..7ee5087f1ac --- /dev/null +++ b/ld/lexsup.c @@ -0,0 +1,1140 @@ +/* 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 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) + +/* 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}, + { {"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 }, + { {"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 SYMBOL 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, default 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( 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: + 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 = atoi (optarg); + 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, _("Invalid argument to option \"mpc860c0\"\n")); + xexit (1); + } + link_info.mpc860c0 = words * 4; /* convert words to bytes */ + } + command_line.relax = true; + 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)); + } + } + + /* 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")); +} |