Annotation of src/external/gpl3/binutils.old/dist/gold/options.cc, Revision 1.1.1.1.2.1
1.1 christos 1: // options.c -- handle command line options for gold
2:
1.1.1.1.2.1! pgoyette 3: // Copyright (C) 2006-2015 Free Software Foundation, Inc.
1.1 christos 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:
43: namespace gold
44: {
45:
46: General_options
47: Position_dependent_options::default_options_;
48:
49: namespace 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.
55: static bool ready_to_register = false;
56:
57: // This global variable is set up as General_options is constructed.
58: static 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.
63: typedef Unordered_map<std::string, One_option*> Option_map;
64: static Option_map* long_options = NULL;
65: static One_option* short_options[128];
66:
67: void
68: One_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:
94: void
95: One_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)
1.1.1.1.2.1! pgoyette 104: {
! 105: // -z takes long-names only.
! 106: gold_assert(this->dashes != DASH_Z);
! 107: len += printf(" %s", gettext(this->helparg));
! 108: }
1.1 christos 109: comma = true;
110: }
111: if (!this->longname.empty()
112: && !(this->longname[0] == this->shortname
113: && this->longname[1] == '\0'))
114: {
115: if (comma)
1.1.1.1.2.1! pgoyette 116: len += printf(", ");
1.1 christos 117: switch (this->dashes)
1.1.1.1.2.1! pgoyette 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: }
1.1 christos 131: len += printf("%s", this->longname.c_str());
132: if (this->helparg)
1.1.1.1.2.1! pgoyette 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: }
1.1 christos 139: }
140:
141: if (len >= 30)
142: {
143: printf("\n");
144: len = 0;
145: }
146: for (; len < 30; ++len)
147: std::putchar(' ');
148:
149: // TODO: if we're boolean, add " (default)" when appropriate.
150: printf("%s\n", gettext(this->helpstring));
151: }
152:
153: void
154: help()
155: {
156: printf(_("Usage: %s [options] file...\nOptions:\n"), gold::program_name);
157:
158: std::vector<const One_option*>::const_iterator it;
159: for (it = registered_options.begin(); it != registered_options.end(); ++it)
160: (*it)->print();
161:
162: // config.guess and libtool.m4 look in ld --help output for the
163: // string "supported targets".
164: printf(_("%s: supported targets:"), gold::program_name);
165: std::vector<const char*> supported_names;
166: gold::supported_target_names(&supported_names);
167: for (std::vector<const char*>::const_iterator p = supported_names.begin();
168: p != supported_names.end();
169: ++p)
170: printf(" %s", *p);
171: printf("\n");
172:
173: printf(_("%s: supported emulations:"), gold::program_name);
174: supported_names.clear();
175: gold::supported_emulation_names(&supported_names);
176: for (std::vector<const char*>::const_iterator p = supported_names.begin();
177: p != supported_names.end();
178: ++p)
179: printf(" %s", *p);
180: printf("\n");
181:
182: // REPORT_BUGS_TO is defined in bfd/bfdver.h.
183: const char* report = REPORT_BUGS_TO;
184: if (*report != '\0')
185: printf(_("Report bugs to %s\n"), report);
186: }
187:
188: // For bool, arg will be NULL (boolean options take no argument);
189: // we always just set to true.
190: void
191: parse_bool(const char*, const char*, bool* retval)
192: {
193: *retval = true;
194: }
195:
196: void
197: parse_uint(const char* option_name, const char* arg, int* retval)
198: {
199: char* endptr;
200: *retval = strtol(arg, &endptr, 0);
201: if (*endptr != '\0' || *retval < 0)
202: gold_fatal(_("%s: invalid option value (expected an integer): %s"),
1.1.1.1.2.1! pgoyette 203: option_name, arg);
1.1 christos 204: }
205:
206: void
207: parse_int(const char* option_name, const char* arg, int* retval)
208: {
209: char* endptr;
210: *retval = strtol(arg, &endptr, 0);
211: if (*endptr != '\0')
212: gold_fatal(_("%s: invalid option value (expected an integer): %s"),
1.1.1.1.2.1! pgoyette 213: option_name, arg);
1.1 christos 214: }
215:
216: void
217: parse_uint64(const char* option_name, const char* arg, uint64_t* retval)
218: {
219: char* endptr;
220: *retval = strtoull(arg, &endptr, 0);
221: if (*endptr != '\0')
222: gold_fatal(_("%s: invalid option value (expected an integer): %s"),
1.1.1.1.2.1! pgoyette 223: option_name, arg);
1.1 christos 224: }
225:
226: void
227: parse_double(const char* option_name, const char* arg, double* retval)
228: {
229: char* endptr;
230: *retval = strtod(arg, &endptr);
231: if (*endptr != '\0')
232: gold_fatal(_("%s: invalid option value "
233: "(expected a floating point number): %s"),
234: option_name, arg);
235: }
236:
237: void
238: parse_percent(const char* option_name, const char* arg, double* retval)
239: {
240: char* endptr;
241: *retval = strtod(arg, &endptr) / 100.0;
242: if (*endptr != '\0')
243: gold_fatal(_("%s: invalid option value "
244: "(expected a floating point number): %s"),
245: option_name, arg);
246: }
247:
248: void
249: parse_string(const char* option_name, const char* arg, const char** retval)
250: {
251: if (*arg == '\0')
252: gold_fatal(_("%s: must take a non-empty argument"), option_name);
253: *retval = arg;
254: }
255:
256: void
257: parse_optional_string(const char*, const char* arg, const char** retval)
258: {
259: *retval = arg;
260: }
261:
262: void
263: parse_dirlist(const char*, const char* arg, Dir_list* retval)
264: {
265: retval->push_back(Search_directory(arg, false));
266: }
267:
268: void
269: parse_set(const char*, const char* arg, String_set* retval)
270: {
271: retval->insert(std::string(arg));
272: }
273:
274: void
275: parse_choices(const char* option_name, const char* arg, const char** retval,
1.1.1.1.2.1! pgoyette 276: const char* choices[], int num_choices)
1.1 christos 277: {
278: for (int i = 0; i < num_choices; i++)
279: if (strcmp(choices[i], arg) == 0)
280: {
1.1.1.1.2.1! pgoyette 281: *retval = arg;
! 282: return;
1.1 christos 283: }
284:
285: // If we get here, the user did not enter a valid choice, so we die.
286: std::string choices_list;
287: for (int i = 0; i < num_choices; i++)
288: {
289: choices_list += choices[i];
290: if (i != num_choices - 1)
1.1.1.1.2.1! pgoyette 291: choices_list += ", ";
1.1 christos 292: }
293: gold_fatal(_("%s: must take one of the following arguments: %s"),
1.1.1.1.2.1! pgoyette 294: option_name, choices_list.c_str());
1.1 christos 295: }
296:
297: } // End namespace options.
298:
299: // Define the handler for "special" options (set via DEFINE_special).
300:
301: void
302: General_options::parse_help(const char*, const char*, Command_line*)
303: {
304: options::help();
305: ::exit(EXIT_SUCCESS);
306: }
307:
308: void
309: General_options::parse_version(const char* opt, const char*, Command_line*)
310: {
311: bool print_short = (opt[0] == '-' && opt[1] == 'v');
312: gold::print_version(print_short);
313: this->printed_version_ = true;
314: if (!print_short)
315: ::exit(EXIT_SUCCESS);
316: }
317:
318: void
319: General_options::parse_V(const char*, const char*, Command_line*)
320: {
321: gold::print_version(true);
322: this->printed_version_ = true;
323:
324: printf(_(" Supported targets:\n"));
325: std::vector<const char*> supported_names;
326: gold::supported_target_names(&supported_names);
327: for (std::vector<const char*>::const_iterator p = supported_names.begin();
328: p != supported_names.end();
329: ++p)
330: printf(" %s\n", *p);
331:
332: printf(_(" Supported emulations:\n"));
333: supported_names.clear();
334: gold::supported_emulation_names(&supported_names);
335: for (std::vector<const char*>::const_iterator p = supported_names.begin();
336: p != supported_names.end();
337: ++p)
338: printf(" %s\n", *p);
339: }
340:
341: void
342: General_options::parse_defsym(const char*, const char* arg,
1.1.1.1.2.1! pgoyette 343: Command_line* cmdline)
1.1 christos 344: {
345: cmdline->script_options().define_symbol(arg);
346: }
347:
348: void
1.1.1.1.2.1! pgoyette 349: General_options::parse_discard_all(const char*, const char*,
! 350: Command_line*)
! 351: {
! 352: this->discard_locals_ = DISCARD_ALL;
! 353: }
! 354:
! 355: void
! 356: General_options::parse_discard_locals(const char*, const char*,
! 357: Command_line*)
! 358: {
! 359: this->discard_locals_ = DISCARD_LOCALS;
! 360: }
! 361:
! 362: void
! 363: General_options::parse_discard_none(const char*, const char*,
! 364: Command_line*)
! 365: {
! 366: this->discard_locals_ = DISCARD_NONE;
! 367: }
! 368:
! 369: void
1.1 christos 370: General_options::parse_incremental(const char*, const char*,
1.1.1.1.2.1! pgoyette 371: Command_line*)
1.1 christos 372: {
373: this->incremental_mode_ = INCREMENTAL_AUTO;
374: }
375:
376: void
377: General_options::parse_no_incremental(const char*, const char*,
1.1.1.1.2.1! pgoyette 378: Command_line*)
1.1 christos 379: {
380: this->incremental_mode_ = INCREMENTAL_OFF;
381: }
382:
383: void
384: General_options::parse_incremental_full(const char*, const char*,
385: Command_line*)
386: {
387: this->incremental_mode_ = INCREMENTAL_FULL;
388: }
389:
390: void
391: General_options::parse_incremental_update(const char*, const char*,
392: Command_line*)
393: {
394: this->incremental_mode_ = INCREMENTAL_UPDATE;
395: }
396:
397: void
398: General_options::parse_incremental_changed(const char*, const char*,
1.1.1.1.2.1! pgoyette 399: Command_line*)
1.1 christos 400: {
401: this->implicit_incremental_ = true;
402: this->incremental_disposition_ = INCREMENTAL_CHANGED;
403: }
404:
405: void
406: General_options::parse_incremental_unchanged(const char*, const char*,
1.1.1.1.2.1! pgoyette 407: Command_line*)
1.1 christos 408: {
409: this->implicit_incremental_ = true;
410: this->incremental_disposition_ = INCREMENTAL_UNCHANGED;
411: }
412:
413: void
414: General_options::parse_incremental_unknown(const char*, const char*,
1.1.1.1.2.1! pgoyette 415: Command_line*)
1.1 christos 416: {
417: this->implicit_incremental_ = true;
418: this->incremental_disposition_ = INCREMENTAL_CHECK;
419: }
420:
421: void
422: General_options::parse_incremental_startup_unchanged(const char*, const char*,
423: Command_line*)
424: {
425: this->implicit_incremental_ = true;
426: this->incremental_startup_disposition_ = INCREMENTAL_UNCHANGED;
427: }
428:
429: void
430: General_options::parse_library(const char*, const char* arg,
1.1.1.1.2.1! pgoyette 431: Command_line* cmdline)
1.1 christos 432: {
433: Input_file_argument::Input_file_type type;
434: const char* name;
435: if (arg[0] == ':')
436: {
437: type = Input_file_argument::INPUT_FILE_TYPE_SEARCHED_FILE;
438: name = arg + 1;
439: }
440: else
441: {
442: type = Input_file_argument::INPUT_FILE_TYPE_LIBRARY;
443: name = arg;
444: }
445: Input_file_argument file(name, type, "", false, *this);
446: cmdline->inputs().add_file(file);
447: }
448:
449: #ifdef ENABLE_PLUGINS
450: void
451: General_options::parse_plugin(const char*, const char* arg,
1.1.1.1.2.1! pgoyette 452: Command_line*)
1.1 christos 453: {
454: this->add_plugin(arg);
455: }
456:
457: // Parse --plugin-opt.
458:
459: void
460: General_options::parse_plugin_opt(const char*, const char* arg,
1.1.1.1.2.1! pgoyette 461: Command_line*)
1.1 christos 462: {
463: this->add_plugin_option(arg);
464: }
465: #endif // ENABLE_PLUGINS
466:
467: void
468: General_options::parse_R(const char* option, const char* arg,
1.1.1.1.2.1! pgoyette 469: Command_line* cmdline)
1.1 christos 470: {
471: struct stat s;
472: if (::stat(arg, &s) != 0 || S_ISDIR(s.st_mode))
473: this->add_to_rpath(arg);
474: else
475: this->parse_just_symbols(option, arg, cmdline);
476: }
477:
478: void
479: General_options::parse_just_symbols(const char*, const char* arg,
1.1.1.1.2.1! pgoyette 480: Command_line* cmdline)
1.1 christos 481: {
482: Input_file_argument file(arg, Input_file_argument::INPUT_FILE_TYPE_FILE,
483: "", true, *this);
484: cmdline->inputs().add_file(file);
485: }
486:
487: // Handle --section-start.
488:
489: void
490: General_options::parse_section_start(const char*, const char* arg,
491: Command_line*)
492: {
493: const char* eq = strchr(arg, '=');
494: if (eq == NULL)
495: {
496: gold_error(_("invalid argument to --section-start; "
497: "must be SECTION=ADDRESS"));
498: return;
499: }
500:
501: std::string section_name(arg, eq - arg);
502:
503: ++eq;
504: const char* val_start = eq;
505: if (eq[0] == '0' && (eq[1] == 'x' || eq[1] == 'X'))
506: eq += 2;
507: if (*eq == '\0')
508: {
509: gold_error(_("--section-start address missing"));
510: return;
511: }
512: uint64_t addr = 0;
513: hex_init();
514: for (; *eq != '\0'; ++eq)
515: {
516: if (!hex_p(*eq))
517: {
518: gold_error(_("--section-start argument %s is not a valid hex number"),
519: val_start);
520: return;
521: }
522: addr <<= 4;
523: addr += hex_value(*eq);
524: }
525:
526: this->section_starts_[section_name] = addr;
527: }
528:
529: // Look up a --section-start value.
530:
531: bool
532: General_options::section_start(const char* secname, uint64_t* paddr) const
533: {
534: if (this->section_starts_.empty())
535: return false;
536: std::map<std::string, uint64_t>::const_iterator p =
537: this->section_starts_.find(secname);
538: if (p == this->section_starts_.end())
539: return false;
540: *paddr = p->second;
541: return true;
542: }
543:
544: void
545: General_options::parse_static(const char*, const char*, Command_line*)
546: {
547: this->set_static(true);
548: }
549:
550: void
551: General_options::parse_script(const char*, const char* arg,
1.1.1.1.2.1! pgoyette 552: Command_line* cmdline)
1.1 christos 553: {
554: if (!read_commandline_script(arg, cmdline))
555: gold::gold_fatal(_("unable to parse script file %s"), arg);
556: }
557:
558: void
559: General_options::parse_version_script(const char*, const char* arg,
1.1.1.1.2.1! pgoyette 560: Command_line* cmdline)
1.1 christos 561: {
562: if (!read_version_script(arg, cmdline))
563: gold::gold_fatal(_("unable to parse version script file %s"), arg);
564: }
565:
566: void
567: General_options::parse_dynamic_list(const char*, const char* arg,
1.1.1.1.2.1! pgoyette 568: Command_line* cmdline)
1.1 christos 569: {
570: if (!read_dynamic_list(arg, cmdline, &this->dynamic_list_))
571: gold::gold_fatal(_("unable to parse dynamic-list script file %s"), arg);
1.1.1.1.2.1! pgoyette 572: this->have_dynamic_list_ = true;
1.1 christos 573: }
574:
575: void
576: General_options::parse_start_group(const char*, const char*,
1.1.1.1.2.1! pgoyette 577: Command_line* cmdline)
1.1 christos 578: {
579: cmdline->inputs().start_group();
580: }
581:
582: void
583: General_options::parse_end_group(const char*, const char*,
1.1.1.1.2.1! pgoyette 584: Command_line* cmdline)
1.1 christos 585: {
586: cmdline->inputs().end_group();
587: }
588:
589: void
590: General_options::parse_start_lib(const char*, const char*,
1.1.1.1.2.1! pgoyette 591: Command_line* cmdline)
1.1 christos 592: {
593: cmdline->inputs().start_lib(cmdline->position_dependent_options());
594: }
595:
596: void
597: General_options::parse_end_lib(const char*, const char*,
1.1.1.1.2.1! pgoyette 598: Command_line* cmdline)
1.1 christos 599: {
600: cmdline->inputs().end_lib();
601: }
602:
603: // The function add_excluded_libs() in ld/ldlang.c of GNU ld breaks up a list
604: // of names separated by commas or colons and puts them in a linked list.
605: // We implement the same parsing of names here but store names in an unordered
606: // map to speed up searching of names.
607:
608: void
609: General_options::parse_exclude_libs(const char*, const char* arg,
1.1.1.1.2.1! pgoyette 610: Command_line*)
1.1 christos 611: {
612: const char* p = arg;
613:
614: while (*p != '\0')
615: {
616: size_t length = strcspn(p, ",:");
617: this->excluded_libs_.insert(std::string(p, length));
618: p += (p[length] ? length + 1 : length);
619: }
620: }
621:
622: // The checking logic is based on the function check_excluded_libs() in
623: // ld/ldlang.c of GNU ld but our implementation is different because we use
624: // an unordered map instead of a linked list, which is what GNU ld uses. GNU
625: // ld searches sequentially in the excluded libs list. For a given archive,
626: // a match is found if the archive's name matches exactly one of the list
627: // entry or if the archive's name is of the form FOO.a and FOO matches exactly
628: // one of the list entry. An entry "ALL" in the list is considered as a
629: // wild-card and matches any given name.
630:
631: bool
632: General_options::check_excluded_libs(const std::string &name) const
633: {
634: Unordered_set<std::string>::const_iterator p;
635:
636: // Exit early for the most common case.
637: if (excluded_libs_.empty())
638: return false;
639:
640: // If we see "ALL", all archives are excluded from automatic export.
641: p = excluded_libs_.find(std::string("ALL"));
642: if (p != excluded_libs_.end())
643: return true;
644:
645: // First strip off any directories in name.
646: const char* basename = lbasename(name.c_str());
647:
648: // Try finding an exact match.
649: p = excluded_libs_.find(std::string(basename));
650: if (p != excluded_libs_.end())
651: return true;
652:
653: // Try matching NAME without ".a" at the end.
654: size_t length = strlen(basename);
655: if ((length >= 2)
656: && (basename[length - 2] == '.')
657: && (basename[length - 1] == 'a'))
658: {
659: p = excluded_libs_.find(std::string(basename, length - 2));
660: if (p != excluded_libs_.end())
661: return true;
662: }
663:
664: return false;
665: }
666:
667: // Recognize input and output target names. The GNU linker accepts
668: // these with --format and --oformat. This code is intended to be
669: // minimally compatible. In practice for an ELF target this would be
670: // the same target as the input files; that name always start with
671: // "elf". Non-ELF targets would be "srec", "symbolsrec", "tekhex",
672: // "binary", "ihex".
673:
674: General_options::Object_format
675: General_options::string_to_object_format(const char* arg)
676: {
1.1.1.1.2.1! pgoyette 677: if (strncmp(arg, "elf", 3) == 0 || strcmp(arg, "default") == 0)
1.1 christos 678: return gold::General_options::OBJECT_FORMAT_ELF;
679: else if (strcmp(arg, "binary") == 0)
680: return gold::General_options::OBJECT_FORMAT_BINARY;
681: else
682: {
683: gold::gold_error(_("format '%s' not supported; treating as elf "
1.1.1.1.2.1! pgoyette 684: "(supported formats: elf, binary)"),
! 685: arg);
1.1 christos 686: return gold::General_options::OBJECT_FORMAT_ELF;
687: }
688: }
689:
690: void
691: General_options::parse_fix_v4bx(const char*, const char*,
1.1.1.1.2.1! pgoyette 692: Command_line*)
1.1 christos 693: {
694: this->fix_v4bx_ = FIX_V4BX_REPLACE;
695: }
696:
697: void
698: General_options::parse_fix_v4bx_interworking(const char*, const char*,
699: Command_line*)
700: {
701: this->fix_v4bx_ = FIX_V4BX_INTERWORKING;
702: }
703:
704: void
705: General_options::parse_EB(const char*, const char*, Command_line*)
706: {
707: this->endianness_ = ENDIANNESS_BIG;
708: }
709:
710: void
711: General_options::parse_EL(const char*, const char*, Command_line*)
712: {
713: this->endianness_ = ENDIANNESS_LITTLE;
714: }
715:
716: } // End namespace gold.
717:
718: namespace
719: {
720:
721: void
722: usage()
723: {
724: fprintf(stderr,
1.1.1.1.2.1! pgoyette 725: _("%s: use the --help option for usage information\n"),
! 726: gold::program_name);
1.1 christos 727: ::exit(EXIT_FAILURE);
728: }
729:
730: void
731: usage(const char* msg, const char* opt)
732: {
733: fprintf(stderr,
1.1.1.1.2.1! pgoyette 734: _("%s: %s: %s\n"),
! 735: gold::program_name, opt, msg);
1.1 christos 736: usage();
737: }
738:
739: // If the default sysroot is relocatable, try relocating it based on
740: // the prefix FROM.
741:
742: static char*
743: get_relative_sysroot(const char* from)
744: {
745: char* path = make_relative_prefix(gold::program_name, from,
1.1.1.1.2.1! pgoyette 746: TARGET_SYSTEM_ROOT);
1.1 christos 747: if (path != NULL)
748: {
749: struct stat s;
750: if (::stat(path, &s) == 0 && S_ISDIR(s.st_mode))
1.1.1.1.2.1! pgoyette 751: return path;
1.1 christos 752: free(path);
753: }
754:
755: return NULL;
756: }
757:
758: // Return the default sysroot. This is set by the --with-sysroot
759: // option to configure. Note we do not free the return value of
760: // get_relative_sysroot, which is a small memory leak, but is
761: // necessary since we store this pointer directly in General_options.
762:
763: static const char*
764: get_default_sysroot()
765: {
766: const char* sysroot = TARGET_SYSTEM_ROOT;
767: if (*sysroot == '\0')
768: return NULL;
769:
770: if (TARGET_SYSTEM_ROOT_RELOCATABLE)
771: {
772: char* path = get_relative_sysroot(BINDIR);
773: if (path == NULL)
1.1.1.1.2.1! pgoyette 774: path = get_relative_sysroot(TOOLBINDIR);
1.1 christos 775: if (path != NULL)
1.1.1.1.2.1! pgoyette 776: return path;
1.1 christos 777: }
778:
779: return sysroot;
780: }
781:
782: // Parse a long option. Such options have the form
783: // <-|--><option>[=arg]. If "=arg" is not present but the option
784: // takes an argument, the next word is taken to the be the argument.
785: // If equals_only is set, then only the <option>=<arg> form is
786: // accepted, not the <option><space><arg> form. Returns a One_option
787: // struct or NULL if argv[i] cannot be parsed as a long option. In
788: // the not-NULL case, *arg is set to the option's argument (NULL if
789: // the option takes no argument), and *i is advanced past this option.
790: // NOTE: it is safe for argv and arg to point to the same place.
791: gold::options::One_option*
792: parse_long_option(int argc, const char** argv, bool equals_only,
1.1.1.1.2.1! pgoyette 793: const char** arg, int* i)
1.1 christos 794: {
795: const char* const this_argv = argv[*i];
796:
797: const char* equals = strchr(this_argv, '=');
798: const char* option_start = this_argv + strspn(this_argv, "-");
799: std::string option(option_start,
1.1.1.1.2.1! pgoyette 800: equals ? equals - option_start : strlen(option_start));
1.1 christos 801:
802: gold::options::Option_map::iterator it
803: = gold::options::long_options->find(option);
804: if (it == gold::options::long_options->end())
805: return NULL;
806:
807: gold::options::One_option* retval = it->second;
808:
809: // If the dash-count doesn't match, we fail.
810: if (this_argv[0] != '-') // no dashes at all: had better be "-z <longopt>"
811: {
812: if (retval->dashes != gold::options::DASH_Z)
1.1.1.1.2.1! pgoyette 813: return NULL;
1.1 christos 814: }
815: else if (this_argv[1] != '-') // one dash
816: {
817: if (retval->dashes != gold::options::ONE_DASH
1.1.1.1.2.1! pgoyette 818: && retval->dashes != gold::options::EXACTLY_ONE_DASH
! 819: && retval->dashes != gold::options::TWO_DASHES)
! 820: return NULL;
1.1 christos 821: }
822: else // two dashes (or more!)
823: {
824: if (retval->dashes != gold::options::TWO_DASHES
1.1.1.1.2.1! pgoyette 825: && retval->dashes != gold::options::EXACTLY_TWO_DASHES
! 826: && retval->dashes != gold::options::ONE_DASH)
! 827: return NULL;
1.1 christos 828: }
829:
830: // Now that we know the option is good (or else bad in a way that
831: // will cause us to die), increment i to point past this argv.
832: ++(*i);
833:
834: // Figure out the option's argument, if any.
835: if (!retval->takes_argument())
836: {
837: if (equals)
1.1.1.1.2.1! pgoyette 838: usage(_("unexpected argument"), this_argv);
1.1 christos 839: else
1.1.1.1.2.1! pgoyette 840: *arg = NULL;
1.1 christos 841: }
842: else
843: {
844: if (equals)
1.1.1.1.2.1! pgoyette 845: *arg = equals + 1;
1.1 christos 846: else if (retval->takes_optional_argument())
847: *arg = retval->default_value;
848: else if (*i < argc && !equals_only)
1.1.1.1.2.1! pgoyette 849: *arg = argv[(*i)++];
1.1 christos 850: else
1.1.1.1.2.1! pgoyette 851: usage(_("missing argument"), this_argv);
1.1 christos 852: }
853:
854: return retval;
855: }
856:
857: // Parse a short option. Such options have the form -<option>[arg].
858: // If "arg" is not present but the option takes an argument, the next
859: // word is taken to the be the argument. If the option does not take
860: // an argument, it may be followed by another short option. Returns a
861: // One_option struct or NULL if argv[i] cannot be parsed as a short
862: // option. In the not-NULL case, *arg is set to the option's argument
863: // (NULL if the option takes no argument), and *i is advanced past
864: // this option. This function keeps *i the same if we parsed a short
865: // option that does not take an argument, that looks to be followed by
866: // another short option in the same word.
867: gold::options::One_option*
868: parse_short_option(int argc, const char** argv, int pos_in_argv_i,
1.1.1.1.2.1! pgoyette 869: const char** arg, int* i)
1.1 christos 870: {
871: const char* const this_argv = argv[*i];
872:
873: if (this_argv[0] != '-')
874: return NULL;
875:
876: // We handle -z as a special case.
877: static gold::options::One_option dash_z("", gold::options::DASH_Z,
1.1.1.1.2.1! pgoyette 878: 'z', "", NULL, "Z-OPTION", false,
1.1 christos 879: NULL);
880: gold::options::One_option* retval = NULL;
881: if (this_argv[pos_in_argv_i] == 'z')
882: retval = &dash_z;
883: else
884: {
885: const int char_as_int = static_cast<int>(this_argv[pos_in_argv_i]);
886: if (char_as_int > 0 && char_as_int < 128)
1.1.1.1.2.1! pgoyette 887: retval = gold::options::short_options[char_as_int];
1.1 christos 888: }
889:
890: if (retval == NULL)
891: return NULL;
892:
893: // Figure out the option's argument, if any.
894: if (!retval->takes_argument())
895: {
896: *arg = NULL;
897: // We only advance past this argument if it's the only one in argv.
898: if (this_argv[pos_in_argv_i + 1] == '\0')
1.1.1.1.2.1! pgoyette 899: ++(*i);
1.1 christos 900: }
901: else
902: {
903: // If we take an argument, we'll eat up this entire argv entry.
904: ++(*i);
905: if (this_argv[pos_in_argv_i + 1] != '\0')
1.1.1.1.2.1! pgoyette 906: *arg = this_argv + pos_in_argv_i + 1;
1.1 christos 907: else if (retval->takes_optional_argument())
908: *arg = retval->default_value;
909: else if (*i < argc)
1.1.1.1.2.1! pgoyette 910: *arg = argv[(*i)++];
1.1 christos 911: else
1.1.1.1.2.1! pgoyette 912: usage(_("missing argument"), this_argv);
1.1 christos 913: }
914:
915: // If we're a -z option, we need to parse our argument as a
916: // long-option, e.g. "-z stacksize=8192".
917: if (retval == &dash_z)
918: {
919: int dummy_i = 0;
920: const char* dash_z_arg = *arg;
921: retval = parse_long_option(1, arg, true, arg, &dummy_i);
922: if (retval == NULL)
1.1.1.1.2.1! pgoyette 923: usage(_("unknown -z option"), dash_z_arg);
1.1 christos 924: }
925:
926: return retval;
927: }
928:
929: } // End anonymous namespace.
930:
931: namespace gold
932: {
933:
934: General_options::General_options()
935: : printed_version_(false),
936: execstack_status_(EXECSTACK_FROM_INPUT),
937: icf_status_(ICF_NONE),
938: static_(false),
939: do_demangle_(false),
940: plugins_(NULL),
941: dynamic_list_(),
1.1.1.1.2.1! pgoyette 942: have_dynamic_list_(false),
1.1 christos 943: incremental_mode_(INCREMENTAL_OFF),
944: incremental_disposition_(INCREMENTAL_STARTUP),
945: incremental_startup_disposition_(INCREMENTAL_CHECK),
946: implicit_incremental_(false),
947: excluded_libs_(),
948: symbols_to_retain_(),
949: section_starts_(),
950: fix_v4bx_(FIX_V4BX_NONE),
1.1.1.1.2.1! pgoyette 951: endianness_(ENDIANNESS_NOT_SET),
! 952: discard_locals_(DISCARD_SEC_MERGE)
1.1 christos 953: {
954: // Turn off option registration once construction is complete.
955: gold::options::ready_to_register = false;
956: }
957:
958: General_options::Object_format
959: General_options::format_enum() const
960: {
961: return General_options::string_to_object_format(this->format());
962: }
963:
964: General_options::Object_format
965: General_options::oformat_enum() const
966: {
967: return General_options::string_to_object_format(this->oformat());
968: }
969:
970: // Add the sysroot, if any, to the search paths.
971:
972: void
973: General_options::add_sysroot()
974: {
975: if (this->sysroot() == NULL || this->sysroot()[0] == '\0')
976: {
977: this->set_sysroot(get_default_sysroot());
978: if (this->sysroot() == NULL || this->sysroot()[0] == '\0')
1.1.1.1.2.1! pgoyette 979: return;
1.1 christos 980: }
981:
982: char* canonical_sysroot = lrealpath(this->sysroot());
983:
984: for (Dir_list::iterator p = this->library_path_.value.begin();
985: p != this->library_path_.value.end();
986: ++p)
987: p->add_sysroot(this->sysroot(), canonical_sysroot);
988:
989: free(canonical_sysroot);
990: }
991:
992: // Return whether FILENAME is in a system directory.
993:
994: bool
995: General_options::is_in_system_directory(const std::string& filename) const
996: {
997: for (Dir_list::const_iterator p = this->library_path_.value.begin();
998: p != this->library_path_.value.end();
999: ++p)
1000: {
1001: // We use a straight string comparison rather than calling
1002: // FILENAME_CMP because we are only interested in the cases
1003: // where we found the file in a system directory, which means
1004: // that we used the directory name as a prefix for a -L search.
1005: if (p->is_system_directory()
1006: && filename.compare(0, p->name().size(), p->name()) == 0)
1007: return true;
1008: }
1009: return false;
1010: }
1011:
1012: // Add a plugin to the list of plugins.
1013:
1014: void
1015: General_options::add_plugin(const char* filename)
1016: {
1017: if (this->plugins_ == NULL)
1018: this->plugins_ = new Plugin_manager(*this);
1019: this->plugins_->add_plugin(filename);
1020: }
1021:
1022: // Add a plugin option to a plugin.
1023:
1024: void
1025: General_options::add_plugin_option(const char* arg)
1026: {
1027: if (this->plugins_ == NULL)
1028: gold_fatal("--plugin-opt requires --plugin.");
1029: this->plugins_->add_plugin_option(arg);
1030: }
1031:
1032: // Set up variables and other state that isn't set up automatically by
1033: // the parse routine, and ensure options don't contradict each other
1034: // and are otherwise kosher.
1035:
1036: void
1037: General_options::finalize()
1038: {
1039: // Normalize the strip modifiers. They have a total order:
1040: // strip_all > strip_debug > strip_non_line > strip_debug_gdb.
1041: // If one is true, set all beneath it to true as well.
1042: if (this->strip_all())
1043: this->set_strip_debug(true);
1044: if (this->strip_debug())
1045: this->set_strip_debug_non_line(true);
1046: if (this->strip_debug_non_line())
1047: this->set_strip_debug_gdb(true);
1048:
1049: if (this->Bshareable())
1050: this->set_shared(true);
1051:
1052: // If the user specifies both -s and -r, convert the -s to -S.
1053: // -r requires us to keep externally visible symbols!
1054: if (this->strip_all() && this->relocatable())
1055: {
1056: this->set_strip_all(false);
1057: gold_assert(this->strip_debug());
1058: }
1059:
1060: // For us, -dc and -dp are synonyms for --define-common.
1061: if (this->dc())
1062: this->set_define_common(true);
1063: if (this->dp())
1064: this->set_define_common(true);
1065:
1066: // We also set --define-common if we're not relocatable, as long as
1067: // the user didn't explicitly ask for something different.
1068: if (!this->user_set_define_common())
1069: this->set_define_common(!this->relocatable());
1070:
1071: // execstack_status_ is a three-state variable; update it based on
1072: // -z [no]execstack.
1073: if (this->execstack())
1074: this->set_execstack_status(EXECSTACK_YES);
1075: else if (this->noexecstack())
1076: this->set_execstack_status(EXECSTACK_NO);
1077:
1078: // icf_status_ is a three-state variable; update it based on the
1079: // value of this->icf().
1080: if (strcmp(this->icf(), "none") == 0)
1081: this->set_icf_status(ICF_NONE);
1082: else if (strcmp(this->icf(), "safe") == 0)
1083: this->set_icf_status(ICF_SAFE);
1084: else
1085: this->set_icf_status(ICF_ALL);
1086:
1087: // Handle the optional argument for --demangle.
1088: if (this->user_set_demangle())
1089: {
1090: this->set_do_demangle(true);
1091: const char* style = this->demangle();
1092: if (*style != '\0')
1093: {
1094: enum demangling_styles style_code;
1095:
1096: style_code = cplus_demangle_name_to_style(style);
1097: if (style_code == unknown_demangling)
1098: gold_fatal("unknown demangling style '%s'", style);
1099: cplus_demangle_set_style(style_code);
1100: }
1101: }
1102: else if (this->user_set_no_demangle())
1103: this->set_do_demangle(false);
1104: else
1105: {
1106: // Testing COLLECT_NO_DEMANGLE makes our default demangling
1107: // behaviour identical to that of gcc's linker wrapper.
1108: this->set_do_demangle(getenv("COLLECT_NO_DEMANGLE") == NULL);
1109: }
1110:
1111: // -M is equivalent to "-Map -".
1112: if (this->print_map() && !this->user_set_Map())
1113: {
1114: this->set_Map("-");
1115: this->set_user_set_Map();
1116: }
1117:
1118: // Using -n or -N implies -static.
1119: if (this->nmagic() || this->omagic())
1120: this->set_static(true);
1121:
1122: // If --thread_count is specified, it applies to
1123: // --thread-count-{initial,middle,final}, though it doesn't override
1124: // them.
1125: if (this->thread_count() > 0 && this->thread_count_initial() == 0)
1126: this->set_thread_count_initial(this->thread_count());
1127: if (this->thread_count() > 0 && this->thread_count_middle() == 0)
1128: this->set_thread_count_middle(this->thread_count());
1129: if (this->thread_count() > 0 && this->thread_count_final() == 0)
1130: this->set_thread_count_final(this->thread_count());
1131:
1132: // Let's warn if you set the thread-count but we're going to ignore it.
1133: #ifndef ENABLE_THREADS
1134: if (this->threads())
1135: {
1136: gold_warning(_("ignoring --threads: "
1137: "%s was compiled without thread support"),
1138: program_name);
1139: this->set_threads(false);
1140: }
1141: if (this->thread_count() > 0 || this->thread_count_initial() > 0
1142: || this->thread_count_middle() > 0 || this->thread_count_final() > 0)
1143: gold_warning(_("ignoring --thread-count: "
1.1.1.1.2.1! pgoyette 1144: "%s was compiled without thread support"),
! 1145: program_name);
1.1 christos 1146: #endif
1147:
1148: std::string libpath;
1149: if (this->user_set_Y())
1150: {
1151: libpath = this->Y();
1152: if (libpath.compare(0, 2, "P,") == 0)
1153: libpath.erase(0, 2);
1154: }
1155: else if (!this->nostdlib())
1156: {
1157: #ifndef NATIVE_LINKER
1158: #define NATIVE_LINKER 0
1159: #endif
1160: const char* p = LIB_PATH;
1161: if (strcmp(p, "::DEFAULT::") != 0)
1162: libpath = p;
1163: else if (NATIVE_LINKER
1164: || this->user_set_sysroot()
1165: || *TARGET_SYSTEM_ROOT != '\0')
1166: {
1167: this->add_to_library_path_with_sysroot("/lib");
1168: this->add_to_library_path_with_sysroot("/usr/lib");
1169: }
1170: else
1171: this->add_to_library_path_with_sysroot(TOOLLIBDIR);
1172: }
1173:
1174: if (!libpath.empty())
1175: {
1176: size_t pos = 0;
1177: size_t next_pos;
1178: do
1179: {
1180: next_pos = libpath.find(':', pos);
1181: size_t len = (next_pos == std::string::npos
1182: ? next_pos
1183: : next_pos - pos);
1184: if (len != 0)
1185: this->add_to_library_path_with_sysroot(libpath.substr(pos, len));
1186: pos = next_pos + 1;
1187: }
1188: while (next_pos != std::string::npos);
1189: }
1190:
1191: // Parse the contents of -retain-symbols-file into a set.
1192: if (this->retain_symbols_file())
1193: {
1194: std::ifstream in;
1195: in.open(this->retain_symbols_file());
1196: if (!in)
1.1.1.1.2.1! pgoyette 1197: gold_fatal(_("unable to open -retain-symbols-file file %s: %s"),
! 1198: this->retain_symbols_file(), strerror(errno));
1.1 christos 1199: std::string line;
1200: std::getline(in, line); // this chops off the trailing \n, if any
1201: while (in)
1.1.1.1.2.1! pgoyette 1202: {
! 1203: if (!line.empty() && line[line.length() - 1] == '\r') // Windows
! 1204: line.resize(line.length() - 1);
! 1205: this->symbols_to_retain_.insert(line);
! 1206: std::getline(in, line);
! 1207: }
1.1 christos 1208: }
1209:
1210: // -Bgroup implies --unresolved-symbols=report-all.
1211: if (this->Bgroup() && !this->user_set_unresolved_symbols())
1212: this->set_unresolved_symbols("report-all");
1213:
1214: // -shared implies --allow-shlib-undefined. Currently
1215: // ---allow-shlib-undefined controls warnings issued based on the
1216: // -symbol table. --unresolved-symbols controls warnings issued
1217: // -based on relocations.
1218: if (this->shared() && !this->user_set_allow_shlib_undefined())
1219: this->set_allow_shlib_undefined(true);
1220:
1221: // Normalize library_path() by adding the sysroot to all directories
1222: // in the path, as appropriate.
1223: this->add_sysroot();
1224:
1225: // Now that we've normalized the options, check for contradictory ones.
1226: if (this->shared() && this->is_static())
1227: gold_fatal(_("-shared and -static are incompatible"));
1228: if (this->shared() && this->pie())
1229: gold_fatal(_("-shared and -pie are incompatible"));
1230: if (this->pie() && this->is_static())
1231: gold_fatal(_("-pie and -static are incompatible"));
1232:
1233: if (this->shared() && this->relocatable())
1234: gold_fatal(_("-shared and -r are incompatible"));
1235: if (this->pie() && this->relocatable())
1236: gold_fatal(_("-pie and -r are incompatible"));
1237:
1238: if (!this->shared())
1239: {
1240: if (this->filter() != NULL)
1241: gold_fatal(_("-F/--filter may not used without -shared"));
1242: if (this->any_auxiliary())
1243: gold_fatal(_("-f/--auxiliary may not be used without -shared"));
1244: }
1245:
1246: // TODO: implement support for -retain-symbols-file with -r, if needed.
1247: if (this->relocatable() && this->retain_symbols_file())
1248: gold_fatal(_("-retain-symbols-file does not yet work with -r"));
1249:
1250: if (this->oformat_enum() != General_options::OBJECT_FORMAT_ELF
1251: && (this->shared()
1252: || this->pie()
1253: || this->relocatable()))
1254: gold_fatal(_("binary output format not compatible "
1255: "with -shared or -pie or -r"));
1256:
1257: if (this->user_set_hash_bucket_empty_fraction()
1258: && (this->hash_bucket_empty_fraction() < 0.0
1259: || this->hash_bucket_empty_fraction() >= 1.0))
1260: gold_fatal(_("--hash-bucket-empty-fraction value %g out of range "
1261: "[0.0, 1.0)"),
1262: this->hash_bucket_empty_fraction());
1263:
1264: if (this->implicit_incremental_ && this->incremental_mode_ == INCREMENTAL_OFF)
1265: gold_fatal(_("Options --incremental-changed, --incremental-unchanged, "
1.1.1.1.2.1! pgoyette 1266: "--incremental-unknown require the use of --incremental"));
1.1 christos 1267:
1268: // Check for options that are not compatible with incremental linking.
1269: // Where an option can be disabled without seriously changing the semantics
1270: // of the link, we turn the option off; otherwise, we issue a fatal error.
1271:
1272: if (this->incremental_mode_ != INCREMENTAL_OFF)
1273: {
1274: if (this->relocatable())
1275: gold_fatal(_("incremental linking is not compatible with -r"));
1276: if (this->emit_relocs())
1277: gold_fatal(_("incremental linking is not compatible with "
1278: "--emit-relocs"));
1279: if (this->has_plugins())
1280: gold_fatal(_("incremental linking is not compatible with --plugin"));
1.1.1.1.2.1! pgoyette 1281: if (this->relro())
! 1282: gold_fatal(_("incremental linking is not compatible with -z relro"));
1.1 christos 1283: if (this->gc_sections())
1284: {
1285: gold_warning(_("ignoring --gc-sections for an incremental link"));
1286: this->set_gc_sections(false);
1287: }
1288: if (this->icf_enabled())
1289: {
1290: gold_warning(_("ignoring --icf for an incremental link"));
1291: this->set_icf_status(ICF_NONE);
1292: }
1293: if (strcmp(this->compress_debug_sections(), "none") != 0)
1294: {
1295: gold_warning(_("ignoring --compress-debug-sections for an "
1296: "incremental link"));
1297: this->set_compress_debug_sections("none");
1298: }
1299: }
1300:
1.1.1.1.2.1! pgoyette 1301: // --rosegment-gap implies --rosegment.
! 1302: if (this->user_set_rosegment_gap())
! 1303: this->set_rosegment(true);
! 1304:
1.1 christos 1305: // FIXME: we can/should be doing a lot more sanity checking here.
1306: }
1307:
1308: // Search_directory methods.
1309:
1310: // This is called if we have a sysroot. Apply the sysroot if
1311: // appropriate. Record whether the directory is in the sysroot.
1312:
1313: void
1314: Search_directory::add_sysroot(const char* sysroot,
1.1.1.1.2.1! pgoyette 1315: const char* canonical_sysroot)
1.1 christos 1316: {
1317: gold_assert(*sysroot != '\0');
1318: if (this->put_in_sysroot_)
1319: {
1320: if (!IS_DIR_SEPARATOR(this->name_[0])
1.1.1.1.2.1! pgoyette 1321: && !IS_DIR_SEPARATOR(sysroot[strlen(sysroot) - 1]))
! 1322: this->name_ = '/' + this->name_;
1.1 christos 1323: this->name_ = sysroot + this->name_;
1324: this->is_in_sysroot_ = true;
1325: }
1326: else
1327: {
1328: // Check whether this entry is in the sysroot. To do this
1329: // correctly, we need to use canonical names. Otherwise we will
1330: // get confused by the ../../.. paths that gcc tends to use.
1331: char* canonical_name = lrealpath(this->name_.c_str());
1332: int canonical_name_len = strlen(canonical_name);
1333: int canonical_sysroot_len = strlen(canonical_sysroot);
1334: if (canonical_name_len > canonical_sysroot_len
1.1.1.1.2.1! pgoyette 1335: && IS_DIR_SEPARATOR(canonical_name[canonical_sysroot_len]))
! 1336: {
! 1337: canonical_name[canonical_sysroot_len] = '\0';
! 1338: if (FILENAME_CMP(canonical_name, canonical_sysroot) == 0)
! 1339: this->is_in_sysroot_ = true;
! 1340: }
1.1 christos 1341: free(canonical_name);
1342: }
1343: }
1344:
1345: // Input_arguments methods.
1346:
1347: // Add a file to the list.
1348:
1349: Input_argument&
1350: Input_arguments::add_file(Input_file_argument& file)
1351: {
1352: file.set_arg_serial(++this->file_count_);
1353: if (this->in_group_)
1354: {
1355: gold_assert(!this->input_argument_list_.empty());
1356: gold_assert(this->input_argument_list_.back().is_group());
1357: return this->input_argument_list_.back().group()->add_file(file);
1358: }
1359: if (this->in_lib_)
1360: {
1361: gold_assert(!this->input_argument_list_.empty());
1362: gold_assert(this->input_argument_list_.back().is_lib());
1363: return this->input_argument_list_.back().lib()->add_file(file);
1364: }
1365: this->input_argument_list_.push_back(Input_argument(file));
1366: return this->input_argument_list_.back();
1367: }
1368:
1369: // Start a group.
1370:
1371: void
1372: Input_arguments::start_group()
1373: {
1374: if (this->in_group_)
1375: gold_fatal(_("May not nest groups"));
1376: if (this->in_lib_)
1377: gold_fatal(_("may not nest groups in libraries"));
1378: Input_file_group* group = new Input_file_group();
1379: this->input_argument_list_.push_back(Input_argument(group));
1380: this->in_group_ = true;
1381: }
1382:
1383: // End a group.
1384:
1385: void
1386: Input_arguments::end_group()
1387: {
1388: if (!this->in_group_)
1389: gold_fatal(_("Group end without group start"));
1390: this->in_group_ = false;
1391: }
1392:
1393: // Start a lib.
1394:
1395: void
1396: Input_arguments::start_lib(const Position_dependent_options& options)
1397: {
1398: if (this->in_lib_)
1399: gold_fatal(_("may not nest libraries"));
1400: if (this->in_group_)
1401: gold_fatal(_("may not nest libraries in groups"));
1402: Input_file_lib* lib = new Input_file_lib(options);
1403: this->input_argument_list_.push_back(Input_argument(lib));
1404: this->in_lib_ = true;
1405: }
1406:
1407: // End a lib.
1408:
1409: void
1410: Input_arguments::end_lib()
1411: {
1412: if (!this->in_lib_)
1413: gold_fatal(_("lib end without lib start"));
1414: this->in_lib_ = false;
1415: }
1416:
1417: // Command_line options.
1418:
1419: Command_line::Command_line()
1420: {
1421: }
1422:
1423: // Pre_options is the hook that sets the ready_to_register flag.
1424:
1425: Command_line::Pre_options::Pre_options()
1426: {
1427: gold::options::ready_to_register = true;
1428: }
1429:
1430: // Process the command line options. For process_one_option, i is the
1431: // index of argv to process next, and must be an option (that is,
1432: // start with a dash). The return value is the index of the next
1433: // option to process (i+1 or i+2, or argc to indicate processing is
1434: // done). no_more_options is set to true if (and when) "--" is seen
1435: // as an option.
1436:
1437: int
1438: Command_line::process_one_option(int argc, const char** argv, int i,
1.1.1.1.2.1! pgoyette 1439: bool* no_more_options)
1.1 christos 1440: {
1441: gold_assert(argv[i][0] == '-' && !(*no_more_options));
1442:
1443: // If we are reading "--", then just set no_more_options and return.
1444: if (argv[i][1] == '-' && argv[i][2] == '\0')
1445: {
1446: *no_more_options = true;
1447: return i + 1;
1448: }
1449:
1450: int new_i = i;
1451: options::One_option* option = NULL;
1452: const char* arg = NULL;
1453:
1454: // First, try to process argv as a long option.
1455: option = parse_long_option(argc, argv, false, &arg, &new_i);
1456: if (option)
1457: {
1458: option->reader->parse_to_value(argv[i], arg, this, &this->options_);
1459: return new_i;
1460: }
1461:
1462: // Now, try to process argv as a short option. Since several short
1463: // options can be combined in one argv, we may have to parse a lot
1464: // until we're done reading this argv.
1465: int pos_in_argv_i = 1;
1466: while (new_i == i)
1467: {
1468: option = parse_short_option(argc, argv, pos_in_argv_i, &arg, &new_i);
1469: if (!option)
1.1.1.1.2.1! pgoyette 1470: break;
1.1 christos 1471: option->reader->parse_to_value(argv[i], arg, this, &this->options_);
1472: ++pos_in_argv_i;
1473: }
1474: if (option)
1475: return new_i;
1476:
1477: // I guess it's neither a long option nor a short option.
1478: usage(_("unknown option"), argv[i]);
1479: return argc;
1480: }
1481:
1482:
1483: void
1484: Command_line::process(int argc, const char** argv)
1485: {
1486: bool no_more_options = false;
1487: int i = 0;
1488: while (i < argc)
1489: {
1490: this->position_options_.copy_from_options(this->options());
1491: if (no_more_options || argv[i][0] != '-')
1.1.1.1.2.1! pgoyette 1492: {
1.1 christos 1493: Input_file_argument file(argv[i],
1494: Input_file_argument::INPUT_FILE_TYPE_FILE,
1495: "", false, this->position_options_);
1.1.1.1.2.1! pgoyette 1496: this->inputs_.add_file(file);
! 1497: ++i;
! 1498: }
1.1 christos 1499: else
1.1.1.1.2.1! pgoyette 1500: i = process_one_option(argc, argv, i, &no_more_options);
1.1 christos 1501: }
1502:
1503: if (this->inputs_.in_group())
1504: {
1505: fprintf(stderr, _("%s: missing group end\n"), program_name);
1506: usage();
1507: }
1508:
1509: // Normalize the options and ensure they don't contradict each other.
1510: this->options_.finalize();
1511: }
1512:
1513: // Finalize the version script options and return them.
1514:
1515: const Version_script_info&
1516: Command_line::version_script()
1517: {
1518: this->options_.finalize_dynamic_list();
1519: Version_script_info* vsi = this->script_options_.version_script_info();
1520: vsi->finalize();
1521: return *vsi;
1522: }
1523:
1524: } // End namespace gold.
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