1// options.c -- handle command line options for gold 2 3// Copyright (C) 2006-2017 Free Software Foundation, Inc. 4// Written by Ian Lance Taylor <iant@google.com>. 5 6// This file is part of gold. 7 8// This program is free software; you can redistribute it and/or modify 9// it under the terms of the GNU General Public License as published by 10// the Free Software Foundation; either version 3 of the License, or 11// (at your option) any later version. 12 13// This program is distributed in the hope that it will be useful, 14// but WITHOUT ANY WARRANTY; without even the implied warranty of 15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16// GNU General Public License for more details. 17 18// You should have received a copy of the GNU General Public License 19// along with this program; if not, write to the Free Software 20// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 21// MA 02110-1301, USA. 22 23#include "gold.h" 24 25#include <cerrno> 26#include <cstdlib> 27#include <cstring> 28#include <fstream> 29#include <vector> 30#include <iostream> 31#include <sys/stat.h> 32#include "filenames.h" 33#include "libiberty.h" 34#include "demangle.h" 35#include "../bfd/bfdver.h" 36 37#include "debug.h" 38#include "script.h" 39#include "target-select.h" 40#include "options.h" 41#include "plugin.h" 42 43namespace gold 44{ 45 46General_options 47Position_dependent_options::default_options_; 48 49namespace options 50{ 51 52// This flag is TRUE if we should register the command-line options as they 53// are constructed. It is set after construction of the options within 54// class Position_dependent_options. 55static bool ready_to_register = false; 56 57// This global variable is set up as General_options is constructed. 58static std::vector<const One_option*> registered_options; 59 60// These are set up at the same time -- the variables that accept one 61// dash, two, or require -z. A single variable may be in more than 62// one of these data structures. 63typedef Unordered_map<std::string, One_option*> Option_map; 64static Option_map* long_options = NULL; 65static One_option* short_options[128]; 66 67void 68One_option::register_option() 69{ 70 if (!ready_to_register) 71 return; 72 73 registered_options.push_back(this); 74 75 // We can't make long_options a static Option_map because we can't 76 // guarantee that will be initialized before register_option() is 77 // first called. 78 if (long_options == NULL) 79 long_options = new Option_map; 80 81 // TWO_DASHES means that two dashes are preferred, but one is ok too. 82 if (!this->longname.empty()) 83 (*long_options)[this->longname] = this; 84 85 const int shortname_as_int = static_cast<int>(this->shortname); 86 gold_assert(shortname_as_int >= 0 && shortname_as_int < 128); 87 if (this->shortname != '\0') 88 { 89 gold_assert(short_options[shortname_as_int] == NULL); 90 short_options[shortname_as_int] = this; 91 } 92} 93 94void 95One_option::print() const 96{ 97 bool comma = false; 98 printf(" "); 99 int len = 2; 100 if (this->shortname != '\0') 101 { 102 len += printf("-%c", this->shortname); 103 if (this->helparg) 104 { 105 // -z takes long-names only. 106 gold_assert(this->dashes != DASH_Z); 107 len += printf(" %s", gettext(this->helparg)); 108 } 109 comma = true; 110 } 111 if (!this->longname.empty() 112 && !(this->longname[0] == this->shortname 113 && this->longname[1] == '\0')) 114 { 115 if (comma) 116 len += printf(", "); 117 switch (this->dashes) 118 { 119 case options::ONE_DASH: case options::EXACTLY_ONE_DASH: 120 len += printf("-"); 121 break; 122 case options::TWO_DASHES: case options::EXACTLY_TWO_DASHES: 123 len += printf("--"); 124 break; 125 case options::DASH_Z: 126 len += printf("-z "); 127 break; 128 default: 129 gold_unreachable(); 130 } 131 len += printf("%s", this->longname.c_str()); 132 if (this->helparg) 133 { 134 // For most options, we print "--frob FOO". But for -z 135 // we print "-z frob=FOO". 136 len += printf("%c%s", this->dashes == options::DASH_Z ? '=' : ' ', 137 gettext(this->helparg)); 138 } 139 } 140 141 if (len >= 30) 142 { 143 printf("\n"); 144 len = 0; 145 } 146 for (; len < 30; ++len) 147 std::putchar(' '); 148 149 printf("%s", gettext(this->helpstring)); 150 if (this->is_default) 151 printf(" (%s)", _("default")); 152 printf("\n"); 153} 154 155void 156help() 157{ 158 printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name); 159 160 std::vector<const One_option*>::const_iterator it; 161 for (it = registered_options.begin(); it != registered_options.end(); ++it) 162 (*it)->print(); 163 164 // config.guess and libtool.m4 look in ld --help output for the 165 // string "supported targets". 166 printf(_("%s: supported targets:"), gold::program_name); 167 std::vector<const char*> supported_names; 168 gold::supported_target_names(&supported_names); 169 for (std::vector<const char*>::const_iterator p = supported_names.begin(); 170 p != supported_names.end(); 171 ++p) 172 printf(" %s", *p); 173 printf("\n"); 174 175 printf(_("%s: supported emulations:"), gold::program_name); 176 supported_names.clear(); 177 gold::supported_emulation_names(&supported_names); 178 for (std::vector<const char*>::const_iterator p = supported_names.begin(); 179 p != supported_names.end(); 180 ++p) 181 printf(" %s", *p); 182 printf("\n"); 183 184 // REPORT_BUGS_TO is defined in bfd/bfdver.h. 185 const char* report = REPORT_BUGS_TO; 186 if (*report != '\0') 187 printf(_("Report bugs to %s\n"), report); 188} 189 190// For bool, arg will be NULL (boolean options take no argument); 191// we always just set to true. 192void 193parse_bool(const char*, const char*, bool* retval) 194{ 195 *retval = true; 196} 197 198void 199parse_uint(const char* option_name, const char* arg, int* retval) 200{ 201 char* endptr; 202 *retval = strtol(arg, &endptr, 0); 203 if (*endptr != '\0' || *retval < 0) 204 gold_fatal(_("%s: invalid option value (expected an integer): %s"), 205 option_name, arg); 206} 207 208void 209parse_int(const char* option_name, const char* arg, int* retval) 210{ 211 char* endptr; 212 *retval = strtol(arg, &endptr, 0); 213 if (*endptr != '\0') 214 gold_fatal(_("%s: invalid option value (expected an integer): %s"), 215 option_name, arg); 216} 217 218void 219parse_uint64(const char* option_name, const char* arg, uint64_t* retval) 220{ 221 char* endptr; 222 *retval = strtoull(arg, &endptr, 0); 223 if (*endptr != '\0') 224 gold_fatal(_("%s: invalid option value (expected an integer): %s"), 225 option_name, arg); 226} 227 228void 229parse_double(const char* option_name, const char* arg, double* retval) 230{ 231 char* endptr; 232 *retval = strtod(arg, &endptr); 233 if (*endptr != '\0') 234 gold_fatal(_("%s: invalid option value " 235 "(expected a floating point number): %s"), 236 option_name, arg); 237} 238 239void 240parse_percent(const char* option_name, const char* arg, double* retval) 241{ 242 char* endptr; 243 *retval = strtod(arg, &endptr) / 100.0; 244 if (*endptr != '\0') 245 gold_fatal(_("%s: invalid option value " 246 "(expected a floating point number): %s"), 247 option_name, arg); 248} 249 250void 251parse_string(const char* option_name, const char* arg, const char** retval) 252{ 253 if (*arg == '\0') 254 gold_fatal(_("%s: must take a non-empty argument"), option_name); 255 *retval = arg; 256} 257 258void 259parse_optional_string(const char*, const char* arg, const char** retval) 260{ 261 *retval = arg; 262} 263 264void 265parse_dirlist(const char*, const char* arg, Dir_list* retval) 266{ 267 retval->push_back(Search_directory(arg, false)); 268} 269 270void 271parse_set(const char*, const char* arg, String_set* retval) 272{ 273 retval->insert(std::string(arg)); 274} 275 276void 277parse_choices(const char* option_name, const char* arg, const char** retval, 278 const char* choices[], int num_choices) 279{ 280 for (int i = 0; i < num_choices; i++) 281 if (strcmp(choices[i], arg) == 0) 282 { 283 *retval = arg; 284 return; 285 } 286 287 // If we get here, the user did not enter a valid choice, so we die. 288 std::string choices_list; 289 for (int i = 0; i < num_choices; i++) 290 { 291 choices_list += choices[i]; 292 if (i != num_choices - 1) 293 choices_list += ", "; 294 } 295 gold_fatal(_("%s: must take one of the following arguments: %s"), 296 option_name, choices_list.c_str()); 297} 298 299} // End namespace options. 300 301// Define the handler for "special" options (set via DEFINE_special). 302 303void 304General_options::parse_help(const char*, const char*, Command_line*) 305{ 306 options::help(); 307 ::exit(EXIT_SUCCESS); 308} 309 310void 311General_options::parse_version(const char* opt, const char*, Command_line*) 312{ 313 bool print_short = (opt[0] == '-' && opt[1] == 'v'); 314 gold::print_version(print_short); 315 this->printed_version_ = true; 316 if (!print_short) 317 ::exit(EXIT_SUCCESS); 318} 319 320void 321General_options::parse_V(const char*, const char*, Command_line*) 322{ 323 gold::print_version(true); 324 this->printed_version_ = true; 325 326 printf(_(" Supported targets:\n")); 327 std::vector<const char*> supported_names; 328 gold::supported_target_names(&supported_names); 329 for (std::vector<const char*>::const_iterator p = supported_names.begin(); 330 p != supported_names.end(); 331 ++p) 332 printf(" %s\n", *p); 333 334 printf(_(" Supported emulations:\n")); 335 supported_names.clear(); 336 gold::supported_emulation_names(&supported_names); 337 for (std::vector<const char*>::const_iterator p = supported_names.begin(); 338 p != supported_names.end(); 339 ++p) 340 printf(" %s\n", *p); 341} 342 343void 344General_options::parse_defsym(const char*, const char* arg, 345 Command_line* cmdline) 346{ 347 cmdline->script_options().define_symbol(arg); 348} 349 350void 351General_options::parse_discard_all(const char*, const char*, 352 Command_line*) 353{ 354 this->discard_locals_ = DISCARD_ALL; 355} 356 357void 358General_options::parse_discard_locals(const char*, const char*, 359 Command_line*) 360{ 361 this->discard_locals_ = DISCARD_LOCALS; 362} 363 364void 365General_options::parse_discard_none(const char*, const char*, 366 Command_line*) 367{ 368 this->discard_locals_ = DISCARD_NONE; 369} 370 371void 372General_options::parse_incremental(const char*, const char*, 373 Command_line*) 374{ 375 this->incremental_mode_ = INCREMENTAL_AUTO; 376} 377 378void 379General_options::parse_no_incremental(const char*, const char*, 380 Command_line*) 381{ 382 this->incremental_mode_ = INCREMENTAL_OFF; 383} 384 385void 386General_options::parse_incremental_full(const char*, const char*, 387 Command_line*) 388{ 389 this->incremental_mode_ = INCREMENTAL_FULL; 390} 391 392void 393General_options::parse_incremental_update(const char*, const char*, 394 Command_line*) 395{ 396 this->incremental_mode_ = INCREMENTAL_UPDATE; 397} 398 399void 400General_options::parse_incremental_changed(const char*, const char*, 401 Command_line*) 402{ 403 this->implicit_incremental_ = true; 404 this->incremental_disposition_ = INCREMENTAL_CHANGED; 405} 406 407void 408General_options::parse_incremental_unchanged(const char*, const char*, 409 Command_line*) 410{ 411 this->implicit_incremental_ = true; 412 this->incremental_disposition_ = INCREMENTAL_UNCHANGED; 413} 414 415void 416General_options::parse_incremental_unknown(const char*, const char*, 417 Command_line*) 418{ 419 this->implicit_incremental_ = true; 420 this->incremental_disposition_ = INCREMENTAL_CHECK; 421} 422 423void 424General_options::parse_incremental_startup_unchanged(const char*, const char*, 425 Command_line*) 426{ 427 this->implicit_incremental_ = true; 428 this->incremental_startup_disposition_ = INCREMENTAL_UNCHANGED; 429} 430 431void 432General_options::parse_library(const char*, const char* arg, 433 Command_line* cmdline) 434{ 435 Input_file_argument::Input_file_type type; 436 const char* name; 437 if (arg[0] == ':') 438 { 439 type = Input_file_argument::INPUT_FILE_TYPE_SEARCHED_FILE; 440 name = arg + 1; 441 } 442 else 443 { 444 type = Input_file_argument::INPUT_FILE_TYPE_LIBRARY; 445 name = arg; 446 } 447 Input_file_argument file(name, type, "", false, *this); 448 cmdline->inputs().add_file(file); 449} 450 451#ifdef ENABLE_PLUGINS 452void 453General_options::parse_plugin(const char*, const char* arg, 454 Command_line*) 455{ 456 this->add_plugin(arg); 457} 458 459// Parse --plugin-opt. 460 461void 462General_options::parse_plugin_opt(const char*, const char* arg, 463 Command_line*) 464{ 465 this->add_plugin_option(arg); 466} 467#endif // ENABLE_PLUGINS 468 469void 470General_options::parse_R(const char* option, const char* arg, 471 Command_line* cmdline) 472{ 473 struct stat s; 474 if (::stat(arg, &s) != 0 || S_ISDIR(s.st_mode)) 475 this->add_to_rpath(arg); 476 else 477 this->parse_just_symbols(option, arg, cmdline); 478} 479 480void 481General_options::parse_just_symbols(const char*, const char* arg, 482 Command_line* cmdline) 483{ 484 Input_file_argument file(arg, Input_file_argument::INPUT_FILE_TYPE_FILE, 485 "", true, *this); 486 cmdline->inputs().add_file(file); 487} 488 489// Handle --section-start. 490 491void 492General_options::parse_section_start(const char*, const char* arg, 493 Command_line*) 494{ 495 const char* eq = strchr(arg, '='); 496 if (eq == NULL) 497 { 498 gold_error(_("invalid argument to --section-start; " 499 "must be SECTION=ADDRESS")); 500 return; 501 } 502 503 std::string section_name(arg, eq - arg); 504 505 ++eq; 506 const char* val_start = eq; 507 if (eq[0] == '0' && (eq[1] == 'x' || eq[1] == 'X')) 508 eq += 2; 509 if (*eq == '\0') 510 { 511 gold_error(_("--section-start address missing")); 512 return; 513 } 514 uint64_t addr = 0; 515 hex_init(); 516 for (; *eq != '\0'; ++eq) 517 { 518 if (!hex_p(*eq)) 519 { 520 gold_error(_("--section-start argument %s is not a valid hex number"), 521 val_start); 522 return; 523 } 524 addr <<= 4; 525 addr += hex_value(*eq); 526 } 527 528 this->section_starts_[section_name] = addr; 529} 530 531// Look up a --section-start value. 532 533bool 534General_options::section_start(const char* secname, uint64_t* paddr) const 535{ 536 if (this->section_starts_.empty()) 537 return false; 538 std::map<std::string, uint64_t>::const_iterator p = 539 this->section_starts_.find(secname); 540 if (p == this->section_starts_.end()) 541 return false; 542 *paddr = p->second; 543 return true; 544} 545 546void 547General_options::parse_static(const char*, const char*, Command_line*) 548{ 549 this->set_static(true); 550} 551 552void 553General_options::parse_script(const char*, const char* arg, 554 Command_line* cmdline) 555{ 556 if (!read_commandline_script(arg, cmdline)) 557 gold::gold_fatal(_("unable to parse script file %s"), arg); 558} 559 560void 561General_options::parse_version_script(const char*, const char* arg, 562 Command_line* cmdline) 563{ 564 if (!read_version_script(arg, cmdline)) 565 gold::gold_fatal(_("unable to parse version script file %s"), arg); 566} 567 568void 569General_options::parse_dynamic_list(const char*, const char* arg, 570 Command_line* cmdline) 571{ 572 if (!read_dynamic_list(arg, cmdline, &this->dynamic_list_)) 573 gold::gold_fatal(_("unable to parse dynamic-list script file %s"), arg); 574 this->have_dynamic_list_ = true; 575} 576 577void 578General_options::parse_start_group(const char*, const char*, 579 Command_line* cmdline) 580{ 581 cmdline->inputs().start_group(); 582} 583 584void 585General_options::parse_end_group(const char*, const char*, 586 Command_line* cmdline) 587{ 588 cmdline->inputs().end_group(); 589} 590 591void 592General_options::parse_start_lib(const char*, const char*, 593 Command_line* cmdline) 594{ 595 cmdline->inputs().start_lib(cmdline->position_dependent_options()); 596} 597 598void 599General_options::parse_end_lib(const char*, const char*, 600 Command_line* cmdline) 601{ 602 cmdline->inputs().end_lib(); 603} 604 605// The function add_excluded_libs() in ld/ldlang.c of GNU ld breaks up a list 606// of names separated by commas or colons and puts them in a linked list. 607// We implement the same parsing of names here but store names in an unordered 608// map to speed up searching of names. 609 610void 611General_options::parse_exclude_libs(const char*, const char* arg, 612 Command_line*) 613{ 614 const char* p = arg; 615 616 while (*p != '\0') 617 { 618 size_t length = strcspn(p, ",:"); 619 this->excluded_libs_.insert(std::string(p, length)); 620 p += (p[length] ? length + 1 : length); 621 } 622} 623 624// The checking logic is based on the function check_excluded_libs() in 625// ld/ldlang.c of GNU ld but our implementation is different because we use 626// an unordered map instead of a linked list, which is what GNU ld uses. GNU 627// ld searches sequentially in the excluded libs list. For a given archive, 628// a match is found if the archive's name matches exactly one of the list 629// entry or if the archive's name is of the form FOO.a and FOO matches exactly 630// one of the list entry. An entry "ALL" in the list is considered as a 631// wild-card and matches any given name. 632 633bool 634General_options::check_excluded_libs(const std::string &name) const 635{ 636 Unordered_set<std::string>::const_iterator p; 637 638 // Exit early for the most common case. 639 if (excluded_libs_.empty()) 640 return false; 641 642 // If we see "ALL", all archives are excluded from automatic export. 643 p = excluded_libs_.find(std::string("ALL")); 644 if (p != excluded_libs_.end()) 645 return true; 646 647 // First strip off any directories in name. 648 const char* basename = lbasename(name.c_str()); 649 650 // Try finding an exact match. 651 p = excluded_libs_.find(std::string(basename)); 652 if (p != excluded_libs_.end()) 653 return true; 654 655 // Try matching NAME without ".a" at the end. 656 size_t length = strlen(basename); 657 if ((length >= 2) 658 && (basename[length - 2] == '.') 659 && (basename[length - 1] == 'a')) 660 { 661 p = excluded_libs_.find(std::string(basename, length - 2)); 662 if (p != excluded_libs_.end()) 663 return true; 664 } 665 666 return false; 667} 668 669// Recognize input and output target names. The GNU linker accepts 670// these with --format and --oformat. This code is intended to be 671// minimally compatible. In practice for an ELF target this would be 672// the same target as the input files; that name always start with 673// "elf". Non-ELF targets would be "srec", "symbolsrec", "tekhex", 674// "binary", "ihex". 675 676General_options::Object_format 677General_options::string_to_object_format(const char* arg) 678{ 679 if (strncmp(arg, "elf", 3) == 0 || strcmp(arg, "default") == 0) 680 return gold::General_options::OBJECT_FORMAT_ELF; 681 else if (strcmp(arg, "binary") == 0) 682 return gold::General_options::OBJECT_FORMAT_BINARY; 683 else 684 { 685 gold::gold_error(_("format '%s' not supported; treating as elf " 686 "(supported formats: elf, binary)"), 687 arg); 688 return gold::General_options::OBJECT_FORMAT_ELF; 689 } 690} 691 692const char* 693General_options::object_format_to_string(General_options::Object_format fmt) 694{ 695 switch (fmt) 696 { 697 case General_options::OBJECT_FORMAT_ELF: 698 return "elf"; 699 case General_options::OBJECT_FORMAT_BINARY: 700 return "binary"; 701 default: 702 gold_unreachable(); 703 } 704} 705 706void 707General_options::parse_fix_v4bx(const char*, const char*, 708 Command_line*) 709{ 710 this->fix_v4bx_ = FIX_V4BX_REPLACE; 711} 712 713void 714General_options::parse_fix_v4bx_interworking(const char*, const char*, 715 Command_line*) 716{ 717 this->fix_v4bx_ = FIX_V4BX_INTERWORKING; 718} 719 720void 721General_options::parse_EB(const char*, const char*, Command_line*) 722{ 723 this->endianness_ = ENDIANNESS_BIG; 724} 725 726void 727General_options::parse_EL(const char*, const char*, Command_line*) 728{ 729 this->endianness_ = ENDIANNESS_LITTLE; 730} 731 732void 733General_options::copy_from_posdep_options( 734 const Position_dependent_options& posdep) 735{ 736 this->set_as_needed(posdep.as_needed()); 737 this->set_Bdynamic(posdep.Bdynamic()); 738 this->set_format( 739 General_options::object_format_to_string(posdep.format_enum())); 740 this->set_whole_archive(posdep.whole_archive()); 741 this->set_incremental_disposition(posdep.incremental_disposition()); 742} 743 744void 745General_options::parse_push_state(const char*, const char*, Command_line*) 746{ 747 Position_dependent_options* posdep = new Position_dependent_options(*this); 748 this->options_stack_.push_back(posdep); 749} 750 751void 752General_options::parse_pop_state(const char*, const char*, Command_line*) 753{ 754 if (this->options_stack_.empty()) 755 { 756 gold::gold_error(_("unbalanced --push-state/--pop-state")); 757 return; 758 } 759 Position_dependent_options* posdep = this->options_stack_.back(); 760 this->options_stack_.pop_back(); 761 this->copy_from_posdep_options(*posdep); 762 delete posdep; 763} 764 765} // End namespace gold. 766 767namespace 768{ 769 770void 771usage() 772{ 773 fprintf(stderr, 774 _("%s: use the --help option for usage information\n"), 775 gold::program_name); 776 ::exit(EXIT_FAILURE); 777} 778 779void 780usage(const char* msg, const char* opt) 781{ 782 fprintf(stderr, 783 _("%s: %s: %s\n"), 784 gold::program_name, opt, msg); 785 usage(); 786} 787 788// If the default sysroot is relocatable, try relocating it based on 789// the prefix FROM. 790 791static char* 792get_relative_sysroot(const char* from) 793{ 794 char* path = make_relative_prefix(gold::program_name, from, 795 TARGET_SYSTEM_ROOT); 796 if (path != NULL) 797 { 798 struct stat s; 799 if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode)) 800 return path; 801 free(path); 802 } 803 804 return NULL; 805} 806 807// Return the default sysroot. This is set by the --with-sysroot 808// option to configure. Note we do not free the return value of 809// get_relative_sysroot, which is a small memory leak, but is 810// necessary since we store this pointer directly in General_options. 811 812static const char* 813get_default_sysroot() 814{ 815 const char* sysroot = TARGET_SYSTEM_ROOT; 816 if (*sysroot == '\0') 817 return NULL; 818 819 if (TARGET_SYSTEM_ROOT_RELOCATABLE) 820 { 821 char* path = get_relative_sysroot(BINDIR); 822 if (path == NULL) 823 path = get_relative_sysroot(TOOLBINDIR); 824 if (path != NULL) 825 return path; 826 } 827 828 return sysroot; 829} 830 831// Parse a long option. Such options have the form 832// <-|--><option>[=arg]. If "=arg" is not present but the option 833// takes an argument, the next word is taken to the be the argument. 834// If equals_only is set, then only the <option>=<arg> form is 835// accepted, not the <option><space><arg> form. Returns a One_option 836// struct or NULL if argv[i] cannot be parsed as a long option. In 837// the not-NULL case, *arg is set to the option's argument (NULL if 838// the option takes no argument), and *i is advanced past this option. 839// NOTE: it is safe for argv and arg to point to the same place. 840gold::options::One_option* 841parse_long_option(int argc, const char** argv, bool equals_only, 842 const char** arg, int* i) 843{ 844 const char* const this_argv = argv[*i]; 845 846 const char* equals = strchr(this_argv, '='); 847 const char* option_start = this_argv + strspn(this_argv, "-"); 848 std::string option(option_start, 849 equals ? equals - option_start : strlen(option_start)); 850 851 gold::options::Option_map::iterator it 852 = gold::options::long_options->find(option); 853 if (it == gold::options::long_options->end()) 854 return NULL; 855 856 gold::options::One_option* retval = it->second; 857 858 // If the dash-count doesn't match, we fail. 859 if (this_argv[0] != '-') // no dashes at all: had better be "-z <longopt>" 860 { 861 if (retval->dashes != gold::options::DASH_Z) 862 return NULL; 863 } 864 else if (this_argv[1] != '-') // one dash 865 { 866 if (retval->dashes != gold::options::ONE_DASH 867 && retval->dashes != gold::options::EXACTLY_ONE_DASH 868 && retval->dashes != gold::options::TWO_DASHES) 869 return NULL; 870 } 871 else // two dashes (or more!) 872 { 873 if (retval->dashes != gold::options::TWO_DASHES 874 && retval->dashes != gold::options::EXACTLY_TWO_DASHES 875 && retval->dashes != gold::options::ONE_DASH) 876 return NULL; 877 } 878 879 // Now that we know the option is good (or else bad in a way that 880 // will cause us to die), increment i to point past this argv. 881 ++(*i); 882 883 // Figure out the option's argument, if any. 884 if (!retval->takes_argument()) 885 { 886 if (equals) 887 usage(_("unexpected argument"), this_argv); 888 else 889 *arg = NULL; 890 } 891 else 892 { 893 if (equals) 894 *arg = equals + 1; 895 else if (retval->takes_optional_argument()) 896 *arg = retval->default_value; 897 else if (*i < argc && !equals_only) 898 *arg = argv[(*i)++]; 899 else 900 usage(_("missing argument"), this_argv); 901 } 902 903 return retval; 904} 905 906// Parse a short option. Such options have the form -<option>[arg]. 907// If "arg" is not present but the option takes an argument, the next 908// word is taken to the be the argument. If the option does not take 909// an argument, it may be followed by another short option. Returns a 910// One_option struct or NULL if argv[i] cannot be parsed as a short 911// option. In the not-NULL case, *arg is set to the option's argument 912// (NULL if the option takes no argument), and *i is advanced past 913// this option. This function keeps *i the same if we parsed a short 914// option that does not take an argument, that looks to be followed by 915// another short option in the same word. 916gold::options::One_option* 917parse_short_option(int argc, const char** argv, int pos_in_argv_i, 918 const char** arg, int* i) 919{ 920 const char* const this_argv = argv[*i]; 921 922 if (this_argv[0] != '-') 923 return NULL; 924 925 // We handle -z as a special case. 926 static gold::options::One_option dash_z("", gold::options::DASH_Z, 927 'z', "", NULL, "Z-OPTION", false, 928 NULL, false); 929 gold::options::One_option* retval = NULL; 930 if (this_argv[pos_in_argv_i] == 'z') 931 retval = &dash_z; 932 else 933 { 934 const int char_as_int = static_cast<int>(this_argv[pos_in_argv_i]); 935 if (char_as_int > 0 && char_as_int < 128) 936 retval = gold::options::short_options[char_as_int]; 937 } 938 939 if (retval == NULL) 940 return NULL; 941 942 // Figure out the option's argument, if any. 943 if (!retval->takes_argument()) 944 { 945 *arg = NULL; 946 // We only advance past this argument if it's the only one in argv. 947 if (this_argv[pos_in_argv_i + 1] == '\0') 948 ++(*i); 949 } 950 else 951 { 952 // If we take an argument, we'll eat up this entire argv entry. 953 ++(*i); 954 if (this_argv[pos_in_argv_i + 1] != '\0') 955 *arg = this_argv + pos_in_argv_i + 1; 956 else if (retval->takes_optional_argument()) 957 *arg = retval->default_value; 958 else if (*i < argc) 959 *arg = argv[(*i)++]; 960 else 961 usage(_("missing argument"), this_argv); 962 } 963 964 // If we're a -z option, we need to parse our argument as a 965 // long-option, e.g. "-z stacksize=8192". 966 if (retval == &dash_z) 967 { 968 int dummy_i = 0; 969 const char* dash_z_arg = *arg; 970 retval = parse_long_option(1, arg, true, arg, &dummy_i); 971 if (retval == NULL) 972 usage(_("unknown -z option"), dash_z_arg); 973 } 974 975 return retval; 976} 977 978} // End anonymous namespace. 979 980namespace gold 981{ 982 983General_options::General_options() 984 : printed_version_(false), 985 execstack_status_(EXECSTACK_FROM_INPUT), 986 icf_status_(ICF_NONE), 987 static_(false), 988 do_demangle_(false), 989 plugins_(NULL), 990 dynamic_list_(), 991 have_dynamic_list_(false), 992 incremental_mode_(INCREMENTAL_OFF), 993 incremental_disposition_(INCREMENTAL_STARTUP), 994 incremental_startup_disposition_(INCREMENTAL_CHECK), 995 implicit_incremental_(false), 996 excluded_libs_(), 997 symbols_to_retain_(), 998 section_starts_(), 999 fix_v4bx_(FIX_V4BX_NONE), 1000 endianness_(ENDIANNESS_NOT_SET), 1001 discard_locals_(DISCARD_SEC_MERGE), 1002 orphan_handling_enum_(ORPHAN_PLACE) 1003{ 1004 // Turn off option registration once construction is complete. 1005 gold::options::ready_to_register = false; 1006} 1007 1008General_options::Object_format 1009General_options::format_enum() const 1010{ 1011 return General_options::string_to_object_format(this->format()); 1012} 1013 1014General_options::Object_format 1015General_options::oformat_enum() const 1016{ 1017 return General_options::string_to_object_format(this->oformat()); 1018} 1019 1020// Add the sysroot, if any, to the search paths. 1021 1022void 1023General_options::add_sysroot() 1024{ 1025 if (this->sysroot() == NULL || this->sysroot()[0] == '\0') 1026 { 1027 this->set_sysroot(get_default_sysroot()); 1028 if (this->sysroot() == NULL || this->sysroot()[0] == '\0') 1029 return; 1030 } 1031 1032 char* canonical_sysroot = lrealpath(this->sysroot()); 1033 1034 for (Dir_list::iterator p = this->library_path_.value.begin(); 1035 p != this->library_path_.value.end(); 1036 ++p) 1037 p->add_sysroot(this->sysroot(), canonical_sysroot); 1038 1039 free(canonical_sysroot); 1040} 1041 1042// Return whether FILENAME is in a system directory. 1043 1044bool 1045General_options::is_in_system_directory(const std::string& filename) const 1046{ 1047 for (Dir_list::const_iterator p = this->library_path_.value.begin(); 1048 p != this->library_path_.value.end(); 1049 ++p) 1050 { 1051 // We use a straight string comparison rather than calling 1052 // FILENAME_CMP because we are only interested in the cases 1053 // where we found the file in a system directory, which means 1054 // that we used the directory name as a prefix for a -L search. 1055 if (p->is_system_directory() 1056 && filename.compare(0, p->name().size(), p->name()) == 0) 1057 return true; 1058 } 1059 return false; 1060} 1061 1062// Add a plugin to the list of plugins. 1063 1064void 1065General_options::add_plugin(const char* filename) 1066{ 1067 if (this->plugins_ == NULL) 1068 this->plugins_ = new Plugin_manager(*this); 1069 this->plugins_->add_plugin(filename); 1070} 1071 1072// Add a plugin option to a plugin. 1073 1074void 1075General_options::add_plugin_option(const char* arg) 1076{ 1077 if (this->plugins_ == NULL) 1078 gold_fatal("--plugin-opt requires --plugin."); 1079 this->plugins_->add_plugin_option(arg); 1080} 1081 1082// Set up variables and other state that isn't set up automatically by 1083// the parse routine, and ensure options don't contradict each other 1084// and are otherwise kosher. 1085 1086void 1087General_options::finalize() 1088{ 1089 // Normalize the strip modifiers. They have a total order: 1090 // strip_all > strip_debug > strip_non_line > strip_debug_gdb. 1091 // If one is true, set all beneath it to true as well. 1092 if (this->strip_all()) 1093 this->set_strip_debug(true); 1094 if (this->strip_debug()) 1095 this->set_strip_debug_non_line(true); 1096 if (this->strip_debug_non_line()) 1097 this->set_strip_debug_gdb(true); 1098 1099 if (this->Bshareable()) 1100 this->set_shared(true); 1101 1102 // If the user specifies both -s and -r, convert the -s to -S. 1103 // -r requires us to keep externally visible symbols! 1104 if (this->strip_all() && this->relocatable()) 1105 { 1106 this->set_strip_all(false); 1107 gold_assert(this->strip_debug()); 1108 } 1109 1110 // For us, -dc and -dp are synonyms for --define-common. 1111 if (this->dc()) 1112 this->set_define_common(true); 1113 if (this->dp()) 1114 this->set_define_common(true); 1115 1116 // We also set --define-common if we're not relocatable, as long as 1117 // the user didn't explicitly ask for something different. 1118 if (!this->user_set_define_common()) 1119 this->set_define_common(!this->relocatable()); 1120 1121 // execstack_status_ is a three-state variable; update it based on 1122 // -z [no]execstack. 1123 if (this->execstack()) 1124 this->set_execstack_status(EXECSTACK_YES); 1125 else if (this->noexecstack()) 1126 this->set_execstack_status(EXECSTACK_NO); 1127 1128 // icf_status_ is a three-state variable; update it based on the 1129 // value of this->icf(). 1130 if (strcmp(this->icf(), "none") == 0) 1131 this->set_icf_status(ICF_NONE); 1132 else if (strcmp(this->icf(), "safe") == 0) 1133 this->set_icf_status(ICF_SAFE); 1134 else 1135 this->set_icf_status(ICF_ALL); 1136 1137 // Handle the optional argument for --demangle. 1138 if (this->user_set_demangle()) 1139 { 1140 this->set_do_demangle(true); 1141 const char* style = this->demangle(); 1142 if (*style != '\0') 1143 { 1144 enum demangling_styles style_code; 1145 1146 style_code = cplus_demangle_name_to_style(style); 1147 if (style_code == unknown_demangling) 1148 gold_fatal("unknown demangling style '%s'", style); 1149 cplus_demangle_set_style(style_code); 1150 } 1151 } 1152 else if (this->user_set_no_demangle()) 1153 this->set_do_demangle(false); 1154 else 1155 { 1156 // Testing COLLECT_NO_DEMANGLE makes our default demangling 1157 // behaviour identical to that of gcc's linker wrapper. 1158 this->set_do_demangle(getenv("COLLECT_NO_DEMANGLE") == NULL); 1159 } 1160 1161 // Parse the --orphan-handling argument. 1162 if (this->user_set_orphan_handling()) 1163 { 1164 if (strcmp(this->orphan_handling(), "place") == 0) 1165 this->set_orphan_handling_enum(ORPHAN_PLACE); 1166 else if (strcmp(this->orphan_handling(), "discard") == 0) 1167 this->set_orphan_handling_enum(ORPHAN_DISCARD); 1168 else if (strcmp(this->orphan_handling(), "warn") == 0) 1169 this->set_orphan_handling_enum(ORPHAN_WARN); 1170 else if (strcmp(this->orphan_handling(), "error") == 0) 1171 this->set_orphan_handling_enum(ORPHAN_ERROR); 1172 } 1173 1174 // -M is equivalent to "-Map -". 1175 if (this->print_map() && !this->user_set_Map()) 1176 { 1177 this->set_Map("-"); 1178 this->set_user_set_Map(); 1179 } 1180 1181 // Using -n or -N implies -static. 1182 if (this->nmagic() || this->omagic()) 1183 this->set_static(true); 1184 1185 // If --thread_count is specified, it applies to 1186 // --thread-count-{initial,middle,final}, though it doesn't override 1187 // them. 1188 if (this->thread_count() > 0 && this->thread_count_initial() == 0) 1189 this->set_thread_count_initial(this->thread_count()); 1190 if (this->thread_count() > 0 && this->thread_count_middle() == 0) 1191 this->set_thread_count_middle(this->thread_count()); 1192 if (this->thread_count() > 0 && this->thread_count_final() == 0) 1193 this->set_thread_count_final(this->thread_count()); 1194 1195 // Let's warn if you set the thread-count but we're going to ignore it. 1196#ifndef ENABLE_THREADS 1197 if (this->threads()) 1198 { 1199 gold_warning(_("ignoring --threads: " 1200 "%s was compiled without thread support"), 1201 program_name); 1202 this->set_threads(false); 1203 } 1204 if (this->thread_count() > 0 || this->thread_count_initial() > 0 1205 || this->thread_count_middle() > 0 || this->thread_count_final() > 0) 1206 gold_warning(_("ignoring --thread-count: " 1207 "%s was compiled without thread support"), 1208 program_name); 1209#endif 1210 1211 std::string libpath; 1212 if (this->user_set_Y()) 1213 { 1214 libpath = this->Y(); 1215 if (libpath.compare(0, 2, "P,") == 0) 1216 libpath.erase(0, 2); 1217 } 1218 else if (!this->nostdlib()) 1219 { 1220#ifndef NATIVE_LINKER 1221#define NATIVE_LINKER 0 1222#endif 1223 const char* p = LIB_PATH; 1224 if (strcmp(p, "::DEFAULT::") != 0) 1225 libpath = p; 1226 else if (NATIVE_LINKER 1227 || this->user_set_sysroot() 1228 || *TARGET_SYSTEM_ROOT != '\0') 1229 { 1230 this->add_to_library_path_with_sysroot("/lib"); 1231 this->add_to_library_path_with_sysroot("/usr/lib"); 1232 } 1233 else 1234 this->add_to_library_path_with_sysroot(TOOLLIBDIR); 1235 } 1236 1237 if (!libpath.empty()) 1238 { 1239 size_t pos = 0; 1240 size_t next_pos; 1241 do 1242 { 1243 next_pos = libpath.find(':', pos); 1244 size_t len = (next_pos == std::string::npos 1245 ? next_pos 1246 : next_pos - pos); 1247 if (len != 0) 1248 this->add_to_library_path_with_sysroot(libpath.substr(pos, len)); 1249 pos = next_pos + 1; 1250 } 1251 while (next_pos != std::string::npos); 1252 } 1253 1254 // Parse the contents of -retain-symbols-file into a set. 1255 if (this->retain_symbols_file()) 1256 { 1257 std::ifstream in; 1258 in.open(this->retain_symbols_file()); 1259 if (!in) 1260 gold_fatal(_("unable to open -retain-symbols-file file %s: %s"), 1261 this->retain_symbols_file(), strerror(errno)); 1262 std::string line; 1263 std::getline(in, line); // this chops off the trailing \n, if any 1264 while (in) 1265 { 1266 if (!line.empty() && line[line.length() - 1] == '\r') // Windows 1267 line.resize(line.length() - 1); 1268 this->symbols_to_retain_.insert(line); 1269 std::getline(in, line); 1270 } 1271 } 1272 1273 // -Bgroup implies --unresolved-symbols=report-all. 1274 if (this->Bgroup() && !this->user_set_unresolved_symbols()) 1275 this->set_unresolved_symbols("report-all"); 1276 1277 // -shared implies --allow-shlib-undefined. Currently 1278 // ---allow-shlib-undefined controls warnings issued based on the 1279 // -symbol table. --unresolved-symbols controls warnings issued 1280 // -based on relocations. 1281 if (this->shared() && !this->user_set_allow_shlib_undefined()) 1282 this->set_allow_shlib_undefined(true); 1283 1284 // Normalize library_path() by adding the sysroot to all directories 1285 // in the path, as appropriate. 1286 this->add_sysroot(); 1287 1288 // Now that we've normalized the options, check for contradictory ones. 1289 if (this->shared() && this->is_static()) 1290 gold_fatal(_("-shared and -static are incompatible")); 1291 if (this->shared() && this->pie()) 1292 gold_fatal(_("-shared and -pie are incompatible")); 1293 if (this->pie() && this->is_static()) 1294 gold_fatal(_("-pie and -static are incompatible")); 1295 1296 if (this->shared() && this->relocatable()) 1297 gold_fatal(_("-shared and -r are incompatible")); 1298 if (this->pie() && this->relocatable()) 1299 gold_fatal(_("-pie and -r are incompatible")); 1300 1301 if (!this->shared()) 1302 { 1303 if (this->filter() != NULL) 1304 gold_fatal(_("-F/--filter may not used without -shared")); 1305 if (this->any_auxiliary()) 1306 gold_fatal(_("-f/--auxiliary may not be used without -shared")); 1307 } 1308 1309 // TODO: implement support for -retain-symbols-file with -r, if needed. 1310 if (this->relocatable() && this->retain_symbols_file()) 1311 gold_fatal(_("-retain-symbols-file does not yet work with -r")); 1312 1313 if (this->oformat_enum() != General_options::OBJECT_FORMAT_ELF 1314 && (this->shared() 1315 || this->pie() 1316 || this->relocatable())) 1317 gold_fatal(_("binary output format not compatible " 1318 "with -shared or -pie or -r")); 1319 1320 if (this->user_set_hash_bucket_empty_fraction() 1321 && (this->hash_bucket_empty_fraction() < 0.0 1322 || this->hash_bucket_empty_fraction() >= 1.0)) 1323 gold_fatal(_("--hash-bucket-empty-fraction value %g out of range " 1324 "[0.0, 1.0)"), 1325 this->hash_bucket_empty_fraction()); 1326 1327 if (this->implicit_incremental_ && this->incremental_mode_ == INCREMENTAL_OFF) 1328 gold_fatal(_("Options --incremental-changed, --incremental-unchanged, " 1329 "--incremental-unknown require the use of --incremental")); 1330 1331 // Check for options that are not compatible with incremental linking. 1332 // Where an option can be disabled without seriously changing the semantics 1333 // of the link, we turn the option off; otherwise, we issue a fatal error. 1334 1335 if (this->incremental_mode_ != INCREMENTAL_OFF) 1336 { 1337 if (this->relocatable()) 1338 gold_fatal(_("incremental linking is not compatible with -r")); 1339 if (this->emit_relocs()) 1340 gold_fatal(_("incremental linking is not compatible with " 1341 "--emit-relocs")); 1342 if (this->has_plugins()) 1343 gold_fatal(_("incremental linking is not compatible with --plugin")); 1344 if (this->relro()) 1345 gold_fatal(_("incremental linking is not compatible with -z relro")); 1346 if (this->gc_sections()) 1347 { 1348 gold_warning(_("ignoring --gc-sections for an incremental link")); 1349 this->set_gc_sections(false); 1350 } 1351 if (this->icf_enabled()) 1352 { 1353 gold_warning(_("ignoring --icf for an incremental link")); 1354 this->set_icf_status(ICF_NONE); 1355 } 1356 if (strcmp(this->compress_debug_sections(), "none") != 0) 1357 { 1358 gold_warning(_("ignoring --compress-debug-sections for an " 1359 "incremental link")); 1360 this->set_compress_debug_sections("none"); 1361 } 1362 } 1363 1364 // --rosegment-gap implies --rosegment. 1365 if (this->user_set_rosegment_gap()) 1366 this->set_rosegment(true); 1367 1368 // FIXME: we can/should be doing a lot more sanity checking here. 1369} 1370 1371// Search_directory methods. 1372 1373// This is called if we have a sysroot. Apply the sysroot if 1374// appropriate. Record whether the directory is in the sysroot. 1375 1376void 1377Search_directory::add_sysroot(const char* sysroot, 1378 const char* canonical_sysroot) 1379{ 1380 gold_assert(*sysroot != '\0'); 1381 if (this->put_in_sysroot_) 1382 { 1383 if (!IS_DIR_SEPARATOR(this->name_[0]) 1384 && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1])) 1385 this->name_ = '/' + this->name_; 1386 this->name_ = sysroot + this->name_; 1387 this->is_in_sysroot_ = true; 1388 } 1389 else 1390 { 1391 // Check whether this entry is in the sysroot. To do this 1392 // correctly, we need to use canonical names. Otherwise we will 1393 // get confused by the ../../.. paths that gcc tends to use. 1394 char* canonical_name = lrealpath(this->name_.c_str()); 1395 int canonical_name_len = strlen(canonical_name); 1396 int canonical_sysroot_len = strlen(canonical_sysroot); 1397 if (canonical_name_len > canonical_sysroot_len 1398 && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len])) 1399 { 1400 canonical_name[canonical_sysroot_len] = '\0'; 1401 if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0) 1402 this->is_in_sysroot_ = true; 1403 } 1404 free(canonical_name); 1405 } 1406} 1407 1408// Input_arguments methods. 1409 1410// Add a file to the list. 1411 1412Input_argument& 1413Input_arguments::add_file(Input_file_argument& file) 1414{ 1415 file.set_arg_serial(++this->file_count_); 1416 if (this->in_group_) 1417 { 1418 gold_assert(!this->input_argument_list_.empty()); 1419 gold_assert(this->input_argument_list_.back().is_group()); 1420 return this->input_argument_list_.back().group()->add_file(file); 1421 } 1422 if (this->in_lib_) 1423 { 1424 gold_assert(!this->input_argument_list_.empty()); 1425 gold_assert(this->input_argument_list_.back().is_lib()); 1426 return this->input_argument_list_.back().lib()->add_file(file); 1427 } 1428 this->input_argument_list_.push_back(Input_argument(file)); 1429 return this->input_argument_list_.back(); 1430} 1431 1432// Start a group. 1433 1434void 1435Input_arguments::start_group() 1436{ 1437 if (this->in_group_) 1438 gold_fatal(_("May not nest groups")); 1439 if (this->in_lib_) 1440 gold_fatal(_("may not nest groups in libraries")); 1441 Input_file_group* group = new Input_file_group(); 1442 this->input_argument_list_.push_back(Input_argument(group)); 1443 this->in_group_ = true; 1444} 1445 1446// End a group. 1447 1448void 1449Input_arguments::end_group() 1450{ 1451 if (!this->in_group_) 1452 gold_fatal(_("Group end without group start")); 1453 this->in_group_ = false; 1454} 1455 1456// Start a lib. 1457 1458void 1459Input_arguments::start_lib(const Position_dependent_options& options) 1460{ 1461 if (this->in_lib_) 1462 gold_fatal(_("may not nest libraries")); 1463 if (this->in_group_) 1464 gold_fatal(_("may not nest libraries in groups")); 1465 Input_file_lib* lib = new Input_file_lib(options); 1466 this->input_argument_list_.push_back(Input_argument(lib)); 1467 this->in_lib_ = true; 1468} 1469 1470// End a lib. 1471 1472void 1473Input_arguments::end_lib() 1474{ 1475 if (!this->in_lib_) 1476 gold_fatal(_("lib end without lib start")); 1477 this->in_lib_ = false; 1478} 1479 1480// Command_line options. 1481 1482Command_line::Command_line() 1483{ 1484} 1485 1486// Pre_options is the hook that sets the ready_to_register flag. 1487 1488Command_line::Pre_options::Pre_options() 1489{ 1490 gold::options::ready_to_register = true; 1491} 1492 1493// Process the command line options. For process_one_option, i is the 1494// index of argv to process next, and must be an option (that is, 1495// start with a dash). The return value is the index of the next 1496// option to process (i+1 or i+2, or argc to indicate processing is 1497// done). no_more_options is set to true if (and when) "--" is seen 1498// as an option. 1499 1500int 1501Command_line::process_one_option(int argc, const char** argv, int i, 1502 bool* no_more_options) 1503{ 1504 gold_assert(argv[i][0] == '-' && !(*no_more_options)); 1505 1506 // If we are reading "--", then just set no_more_options and return. 1507 if (argv[i][1] == '-' && argv[i][2] == '\0') 1508 { 1509 *no_more_options = true; 1510 return i + 1; 1511 } 1512 1513 int new_i = i; 1514 options::One_option* option = NULL; 1515 const char* arg = NULL; 1516 1517 // First, try to process argv as a long option. 1518 option = parse_long_option(argc, argv, false, &arg, &new_i); 1519 if (option) 1520 { 1521 option->reader->parse_to_value(argv[i], arg, this, &this->options_); 1522 return new_i; 1523 } 1524 1525 // Now, try to process argv as a short option. Since several short 1526 // options can be combined in one argv, we may have to parse a lot 1527 // until we're done reading this argv. 1528 int pos_in_argv_i = 1; 1529 while (new_i == i) 1530 { 1531 option = parse_short_option(argc, argv, pos_in_argv_i, &arg, &new_i); 1532 if (!option) 1533 break; 1534 option->reader->parse_to_value(argv[i], arg, this, &this->options_); 1535 ++pos_in_argv_i; 1536 } 1537 if (option) 1538 return new_i; 1539 1540 // I guess it's neither a long option nor a short option. 1541 usage(_("unknown option"), argv[i]); 1542 return argc; 1543} 1544 1545 1546void 1547Command_line::process(int argc, const char** argv) 1548{ 1549 bool no_more_options = false; 1550 int i = 0; 1551 while (i < argc) 1552 { 1553 this->position_options_.copy_from_options(this->options()); 1554 if (no_more_options || argv[i][0] != '-') 1555 { 1556 Input_file_argument file(argv[i], 1557 Input_file_argument::INPUT_FILE_TYPE_FILE, 1558 "", false, this->position_options_); 1559 this->inputs_.add_file(file); 1560 ++i; 1561 } 1562 else 1563 i = process_one_option(argc, argv, i, &no_more_options); 1564 } 1565 1566 if (this->inputs_.in_group()) 1567 { 1568 fprintf(stderr, _("%s: missing group end\n"), program_name); 1569 usage(); 1570 } 1571 1572 // Normalize the options and ensure they don't contradict each other. 1573 this->options_.finalize(); 1574} 1575 1576// Finalize the version script options and return them. 1577 1578const Version_script_info& 1579Command_line::version_script() 1580{ 1581 this->options_.finalize_dynamic_list(); 1582 Version_script_info* vsi = this->script_options_.version_script_info(); 1583 vsi->finalize(); 1584 return *vsi; 1585} 1586 1587} // End namespace gold. 1588