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bae7f79e ILT |
1 | // options.h -- handle command line options for gold -*- C++ -*- |
2 | ||
dde3f402 | 3 | // Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
6cb15b7f ILT |
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 | ||
bae7f79e | 23 | // General_options (from Command_line::options()) |
ee1fe73e | 24 | // All the options (a.k.a. command-line flags) |
bae7f79e ILT |
25 | // Input_argument (from Command_line::inputs()) |
26 | // The list of input files, including -l options. | |
ee1fe73e ILT |
27 | // Command_line |
28 | // Everything we get from the command line -- the General_options | |
29 | // plus the Input_arguments. | |
30 | // | |
31 | // There are also some smaller classes, such as | |
32 | // Position_dependent_options which hold a subset of General_options | |
33 | // that change as options are parsed (as opposed to the usual behavior | |
34 | // of the last instance of that option specified on the commandline wins). | |
bae7f79e ILT |
35 | |
36 | #ifndef GOLD_OPTIONS_H | |
37 | #define GOLD_OPTIONS_H | |
38 | ||
ca3a67a5 | 39 | #include <cstdlib> |
cbb93e63 | 40 | #include <cstring> |
bae7f79e | 41 | #include <list> |
a192ba05 | 42 | #include <map> |
61ba1cf9 | 43 | #include <string> |
92e059d8 | 44 | #include <vector> |
bae7f79e | 45 | |
0daa6f62 | 46 | #include "elfcpp.h" |
3c2fafa5 ILT |
47 | #include "script.h" |
48 | ||
bae7f79e ILT |
49 | namespace gold |
50 | { | |
51 | ||
52 | class Command_line; | |
ee1fe73e ILT |
53 | class General_options; |
54 | class Search_directory; | |
ead1e424 | 55 | class Input_file_group; |
b0193076 | 56 | class Input_file_lib; |
3c2fafa5 | 57 | class Position_dependent_options; |
0daa6f62 | 58 | class Target; |
89fc3421 | 59 | class Plugin_manager; |
bae7f79e | 60 | |
266d0a74 ILT |
61 | // Incremental build action for a specific file, as selected by the user. |
62 | ||
63 | enum Incremental_disposition | |
64 | { | |
65 | // Determine the status from the timestamp (default). | |
66 | INCREMENTAL_CHECK, | |
67 | // Assume the file changed from the previous build. | |
68 | INCREMENTAL_CHANGED, | |
69 | // Assume the file didn't change from the previous build. | |
70 | INCREMENTAL_UNCHANGED | |
71 | }; | |
72 | ||
ee1fe73e ILT |
73 | // The nested namespace is to contain all the global variables and |
74 | // structs that need to be defined in the .h file, but do not need to | |
75 | // be used outside this class. | |
c7912668 ILT |
76 | namespace options |
77 | { | |
ee1fe73e | 78 | typedef std::vector<Search_directory> Dir_list; |
c5818ff1 | 79 | typedef Unordered_set<std::string> String_set; |
ee1fe73e ILT |
80 | |
81 | // These routines convert from a string option to various types. | |
82 | // Each gives a fatal error if it cannot parse the argument. | |
83 | ||
84 | extern void | |
85 | parse_bool(const char* option_name, const char* arg, bool* retval); | |
86 | ||
c0a62865 DK |
87 | extern void |
88 | parse_int(const char* option_name, const char* arg, int* retval); | |
89 | ||
ee1fe73e ILT |
90 | extern void |
91 | parse_uint(const char* option_name, const char* arg, int* retval); | |
92 | ||
93 | extern void | |
c18476e7 ILT |
94 | parse_uint64(const char* option_name, const char* arg, uint64_t* retval); |
95 | ||
96 | extern void | |
97 | parse_double(const char* option_name, const char* arg, double* retval); | |
ee1fe73e ILT |
98 | |
99 | extern void | |
100 | parse_string(const char* option_name, const char* arg, const char** retval); | |
101 | ||
086a1841 ILT |
102 | extern void |
103 | parse_optional_string(const char* option_name, const char* arg, | |
104 | const char** retval); | |
105 | ||
ee1fe73e ILT |
106 | extern void |
107 | parse_dirlist(const char* option_name, const char* arg, Dir_list* retval); | |
108 | ||
c5818ff1 CC |
109 | extern void |
110 | parse_set(const char* option_name, const char* arg, String_set* retval); | |
111 | ||
ee1fe73e ILT |
112 | extern void |
113 | parse_choices(const char* option_name, const char* arg, const char** retval, | |
114 | const char* choices[], int num_choices); | |
115 | ||
116 | struct Struct_var; | |
117 | ||
118 | // Most options have both a shortname (one letter) and a longname. | |
119 | // This enum controls how many dashes are expected for longname access | |
120 | // -- shortnames always use one dash. Most longnames will accept | |
121 | // either one dash or two; the only difference between ONE_DASH and | |
122 | // TWO_DASHES is how we print the option in --help. However, some | |
123 | // longnames require two dashes, and some require only one. The | |
124 | // special value DASH_Z means that the option is preceded by "-z". | |
125 | enum Dashes | |
126 | { | |
127 | ONE_DASH, TWO_DASHES, EXACTLY_ONE_DASH, EXACTLY_TWO_DASHES, DASH_Z | |
128 | }; | |
129 | ||
130 | // LONGNAME is the long-name of the option with dashes converted to | |
131 | // underscores, or else the short-name if the option has no long-name. | |
132 | // It is never the empty string. | |
133 | // DASHES is an instance of the Dashes enum: ONE_DASH, TWO_DASHES, etc. | |
134 | // SHORTNAME is the short-name of the option, as a char, or '\0' if the | |
135 | // option has no short-name. If the option has no long-name, you | |
136 | // should specify the short-name in *both* VARNAME and here. | |
137 | // DEFAULT_VALUE is the value of the option if not specified on the | |
138 | // commandline, as a string. | |
139 | // HELPSTRING is the descriptive text used with the option via --help | |
140 | // HELPARG is how you define the argument to the option. | |
141 | // --help output is "-shortname HELPARG, --longname HELPARG: HELPSTRING" | |
142 | // HELPARG should be NULL iff the option is a bool and takes no arg. | |
086a1841 ILT |
143 | // OPTIONAL_ARG is true if this option takes an optional argument. An |
144 | // optional argument must be specifid as --OPTION=VALUE, not | |
145 | // --OPTION VALUE. | |
ee1fe73e ILT |
146 | // READER provides parse_to_value, which is a function that will convert |
147 | // a char* argument into the proper type and store it in some variable. | |
148 | // A One_option struct initializes itself with the global list of options | |
149 | // at constructor time, so be careful making one of these. | |
150 | struct One_option | |
151 | { | |
152 | std::string longname; | |
153 | Dashes dashes; | |
154 | char shortname; | |
155 | const char* default_value; | |
156 | const char* helpstring; | |
157 | const char* helparg; | |
086a1841 | 158 | bool optional_arg; |
ee1fe73e ILT |
159 | Struct_var* reader; |
160 | ||
161 | One_option(const char* ln, Dashes d, char sn, const char* dv, | |
086a1841 | 162 | const char* hs, const char* ha, bool oa, Struct_var* r) |
ee1fe73e | 163 | : longname(ln), dashes(d), shortname(sn), default_value(dv ? dv : ""), |
086a1841 | 164 | helpstring(hs), helparg(ha), optional_arg(oa), reader(r) |
ee1fe73e ILT |
165 | { |
166 | // In longname, we convert all underscores to dashes, since GNU | |
167 | // style uses dashes in option names. longname is likely to have | |
168 | // underscores in it because it's also used to declare a C++ | |
169 | // function. | |
170 | const char* pos = strchr(this->longname.c_str(), '_'); | |
171 | for (; pos; pos = strchr(pos, '_')) | |
172 | this->longname[pos - this->longname.c_str()] = '-'; | |
173 | ||
174 | // We only register ourselves if our helpstring is not NULL. This | |
175 | // is to support the "no-VAR" boolean variables, which we | |
176 | // conditionally turn on by defining "no-VAR" help text. | |
177 | if (this->helpstring) | |
178 | this->register_option(); | |
179 | } | |
180 | ||
181 | // This option takes an argument iff helparg is not NULL. | |
182 | bool | |
183 | takes_argument() const | |
184 | { return this->helparg != NULL; } | |
185 | ||
086a1841 ILT |
186 | // Whether the argument is optional. |
187 | bool | |
188 | takes_optional_argument() const | |
189 | { return this->optional_arg; } | |
190 | ||
ee1fe73e ILT |
191 | // Register this option with the global list of options. |
192 | void | |
193 | register_option(); | |
194 | ||
195 | // Print this option to stdout (used with --help). | |
196 | void | |
197 | print() const; | |
198 | }; | |
199 | ||
200 | // All options have a Struct_##varname that inherits from this and | |
201 | // actually implements parse_to_value for that option. | |
202 | struct Struct_var | |
203 | { | |
204 | // OPTION: the name of the option as specified on the commandline, | |
205 | // including leading dashes, and any text following the option: | |
206 | // "-O", "--defsym=mysym=0x1000", etc. | |
207 | // ARG: the arg associated with this option, or NULL if the option | |
208 | // takes no argument: "2", "mysym=0x1000", etc. | |
209 | // CMDLINE: the global Command_line object. Used by DEFINE_special. | |
210 | // OPTIONS: the global General_options object. Used by DEFINE_special. | |
211 | virtual void | |
212 | parse_to_value(const char* option, const char* arg, | |
213 | Command_line* cmdline, General_options* options) = 0; | |
214 | virtual | |
215 | ~Struct_var() // To make gcc happy. | |
216 | { } | |
217 | }; | |
bae7f79e | 218 | |
ee1fe73e ILT |
219 | // This is for "special" options that aren't of any predefined type. |
220 | struct Struct_special : public Struct_var | |
221 | { | |
222 | // If you change this, change the parse-fn in DEFINE_special as well. | |
223 | typedef void (General_options::*Parse_function)(const char*, const char*, | |
224 | Command_line*); | |
225 | Struct_special(const char* varname, Dashes dashes, char shortname, | |
226 | Parse_function parse_function, | |
227 | const char* helpstring, const char* helparg) | |
086a1841 | 228 | : option(varname, dashes, shortname, "", helpstring, helparg, false, this), |
ee1fe73e ILT |
229 | parse(parse_function) |
230 | { } | |
231 | ||
2ea97941 | 232 | void parse_to_value(const char* option, const char* arg, |
ee1fe73e | 233 | Command_line* cmdline, General_options* options) |
2ea97941 | 234 | { (options->*(this->parse))(option, arg, cmdline); } |
ee1fe73e ILT |
235 | |
236 | One_option option; | |
237 | Parse_function parse; | |
238 | }; | |
239 | ||
240 | } // End namespace options. | |
241 | ||
242 | ||
243 | // These are helper macros use by DEFINE_uint64/etc below. | |
244 | // This macro is used inside the General_options_ class, so defines | |
245 | // var() and set_var() as General_options methods. Arguments as are | |
246 | // for the constructor for One_option. param_type__ is the same as | |
247 | // type__ for built-in types, and "const type__ &" otherwise. | |
e96c574b DK |
248 | // |
249 | // When we define the linker command option "assert", the macro argument | |
250 | // varname__ of DEFINE_var below will be replaced by "assert". On Mac OSX | |
251 | // assert.h is included implicitly by one of the library headers we use. To | |
252 | // avoid unintended macro substitution of "assert()", we need to enclose | |
253 | // varname__ with parenthese. | |
ee1fe73e ILT |
254 | #define DEFINE_var(varname__, dashes__, shortname__, default_value__, \ |
255 | default_value_as_string__, helpstring__, helparg__, \ | |
086a1841 | 256 | optional_arg__, type__, param_type__, parse_fn__) \ |
ee1fe73e ILT |
257 | public: \ |
258 | param_type__ \ | |
e96c574b | 259 | (varname__)() const \ |
ee1fe73e ILT |
260 | { return this->varname__##_.value; } \ |
261 | \ | |
262 | bool \ | |
263 | user_set_##varname__() const \ | |
264 | { return this->varname__##_.user_set_via_option; } \ | |
265 | \ | |
2b706932 ILT |
266 | void \ |
267 | set_user_set_##varname__() \ | |
268 | { this->varname__##_.user_set_via_option = true; } \ | |
269 | \ | |
ee1fe73e ILT |
270 | private: \ |
271 | struct Struct_##varname__ : public options::Struct_var \ | |
272 | { \ | |
273 | Struct_##varname__() \ | |
274 | : option(#varname__, dashes__, shortname__, default_value_as_string__, \ | |
086a1841 | 275 | helpstring__, helparg__, optional_arg__, this), \ |
ee1fe73e ILT |
276 | user_set_via_option(false), value(default_value__) \ |
277 | { } \ | |
278 | \ | |
279 | void \ | |
280 | parse_to_value(const char* option_name, const char* arg, \ | |
281 | Command_line*, General_options*) \ | |
282 | { \ | |
283 | parse_fn__(option_name, arg, &this->value); \ | |
284 | this->user_set_via_option = true; \ | |
285 | } \ | |
286 | \ | |
287 | options::One_option option; \ | |
288 | bool user_set_via_option; \ | |
289 | type__ value; \ | |
290 | }; \ | |
291 | Struct_##varname__ varname__##_; \ | |
292 | void \ | |
293 | set_##varname__(param_type__ value) \ | |
294 | { this->varname__##_.value = value; } | |
295 | ||
296 | // These macros allow for easy addition of a new commandline option. | |
297 | ||
298 | // If no_helpstring__ is not NULL, then in addition to creating | |
d98bc257 ILT |
299 | // VARNAME, we also create an option called no-VARNAME (or, for a -z |
300 | // option, noVARNAME). | |
ee1fe73e ILT |
301 | #define DEFINE_bool(varname__, dashes__, shortname__, default_value__, \ |
302 | helpstring__, no_helpstring__) \ | |
303 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
304 | default_value__ ? "true" : "false", helpstring__, NULL, \ | |
086a1841 | 305 | false, bool, bool, options::parse_bool) \ |
ee1fe73e ILT |
306 | struct Struct_no_##varname__ : public options::Struct_var \ |
307 | { \ | |
d98bc257 ILT |
308 | Struct_no_##varname__() : option((dashes__ == options::DASH_Z \ |
309 | ? "no" #varname__ \ | |
310 | : "no-" #varname__), \ | |
311 | dashes__, '\0', \ | |
ee1fe73e | 312 | default_value__ ? "false" : "true", \ |
086a1841 | 313 | no_helpstring__, NULL, false, this) \ |
ee1fe73e ILT |
314 | { } \ |
315 | \ | |
316 | void \ | |
317 | parse_to_value(const char*, const char*, \ | |
318 | Command_line*, General_options* options) \ | |
41263c05 DK |
319 | { \ |
320 | options->set_##varname__(false); \ | |
321 | options->set_user_set_##varname__(); \ | |
322 | } \ | |
ee1fe73e ILT |
323 | \ |
324 | options::One_option option; \ | |
325 | }; \ | |
326 | Struct_no_##varname__ no_##varname__##_initializer_ | |
327 | ||
7c414435 DM |
328 | #define DEFINE_enable(varname__, dashes__, shortname__, default_value__, \ |
329 | helpstring__, no_helpstring__) \ | |
330 | DEFINE_var(enable_##varname__, dashes__, shortname__, default_value__, \ | |
331 | default_value__ ? "true" : "false", helpstring__, NULL, \ | |
332 | false, bool, bool, options::parse_bool) \ | |
333 | struct Struct_disable_##varname__ : public options::Struct_var \ | |
334 | { \ | |
335 | Struct_disable_##varname__() : option("disable-" #varname__, \ | |
336 | dashes__, '\0', \ | |
337 | default_value__ ? "false" : "true", \ | |
338 | no_helpstring__, NULL, false, this) \ | |
339 | { } \ | |
340 | \ | |
341 | void \ | |
342 | parse_to_value(const char*, const char*, \ | |
343 | Command_line*, General_options* options) \ | |
344 | { options->set_enable_##varname__(false); } \ | |
345 | \ | |
346 | options::One_option option; \ | |
347 | }; \ | |
348 | Struct_disable_##varname__ disable_##varname__##_initializer_ | |
349 | ||
c0a62865 DK |
350 | #define DEFINE_int(varname__, dashes__, shortname__, default_value__, \ |
351 | helpstring__, helparg__) \ | |
352 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
353 | #default_value__, helpstring__, helparg__, false, \ | |
354 | int, int, options::parse_int) | |
355 | ||
ee1fe73e ILT |
356 | #define DEFINE_uint(varname__, dashes__, shortname__, default_value__, \ |
357 | helpstring__, helparg__) \ | |
358 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
086a1841 | 359 | #default_value__, helpstring__, helparg__, false, \ |
ee1fe73e ILT |
360 | int, int, options::parse_uint) |
361 | ||
362 | #define DEFINE_uint64(varname__, dashes__, shortname__, default_value__, \ | |
363 | helpstring__, helparg__) \ | |
364 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
086a1841 | 365 | #default_value__, helpstring__, helparg__, false, \ |
ee1fe73e ILT |
366 | uint64_t, uint64_t, options::parse_uint64) |
367 | ||
c18476e7 ILT |
368 | #define DEFINE_double(varname__, dashes__, shortname__, default_value__, \ |
369 | helpstring__, helparg__) \ | |
370 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
086a1841 | 371 | #default_value__, helpstring__, helparg__, false, \ |
c18476e7 ILT |
372 | double, double, options::parse_double) |
373 | ||
ee1fe73e ILT |
374 | #define DEFINE_string(varname__, dashes__, shortname__, default_value__, \ |
375 | helpstring__, helparg__) \ | |
376 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
086a1841 | 377 | default_value__, helpstring__, helparg__, false, \ |
ee1fe73e ILT |
378 | const char*, const char*, options::parse_string) |
379 | ||
380 | // This is like DEFINE_string, but we convert each occurrence to a | |
381 | // Search_directory and store it in a vector. Thus we also have the | |
382 | // add_to_VARNAME() method, to append to the vector. | |
383 | #define DEFINE_dirlist(varname__, dashes__, shortname__, \ | |
384 | helpstring__, helparg__) \ | |
385 | DEFINE_var(varname__, dashes__, shortname__, , \ | |
086a1841 | 386 | "", helpstring__, helparg__, false, options::Dir_list, \ |
ee1fe73e ILT |
387 | const options::Dir_list&, options::parse_dirlist) \ |
388 | void \ | |
389 | add_to_##varname__(const char* new_value) \ | |
390 | { options::parse_dirlist(NULL, new_value, &this->varname__##_.value); } \ | |
391 | void \ | |
392 | add_search_directory_to_##varname__(const Search_directory& dir) \ | |
393 | { this->varname__##_.value.push_back(dir); } | |
394 | ||
c5818ff1 CC |
395 | // This is like DEFINE_string, but we store a set of strings. |
396 | #define DEFINE_set(varname__, dashes__, shortname__, \ | |
397 | helpstring__, helparg__) \ | |
398 | DEFINE_var(varname__, dashes__, shortname__, , \ | |
399 | "", helpstring__, helparg__, false, options::String_set, \ | |
400 | const options::String_set&, options::parse_set) \ | |
401 | public: \ | |
402 | bool \ | |
403 | any_##varname__() const \ | |
404 | { return !this->varname__##_.value.empty(); } \ | |
f3e9c5c5 | 405 | \ |
c5818ff1 CC |
406 | bool \ |
407 | is_##varname__(const char* symbol) const \ | |
408 | { \ | |
409 | return (!this->varname__##_.value.empty() \ | |
410 | && (this->varname__##_.value.find(std::string(symbol)) \ | |
411 | != this->varname__##_.value.end())); \ | |
f3e9c5c5 ILT |
412 | } \ |
413 | \ | |
414 | options::String_set::const_iterator \ | |
415 | varname__##_begin() const \ | |
416 | { return this->varname__##_.value.begin(); } \ | |
417 | \ | |
418 | options::String_set::const_iterator \ | |
419 | varname__##_end() const \ | |
420 | { return this->varname__##_.value.end(); } | |
c5818ff1 | 421 | |
ee1fe73e ILT |
422 | // When you have a list of possible values (expressed as string) |
423 | // After helparg__ should come an initializer list, like | |
424 | // {"foo", "bar", "baz"} | |
425 | #define DEFINE_enum(varname__, dashes__, shortname__, default_value__, \ | |
426 | helpstring__, helparg__, ...) \ | |
427 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
086a1841 | 428 | default_value__, helpstring__, helparg__, false, \ |
ee1fe73e ILT |
429 | const char*, const char*, parse_choices_##varname__) \ |
430 | private: \ | |
431 | static void parse_choices_##varname__(const char* option_name, \ | |
432 | const char* arg, \ | |
433 | const char** retval) { \ | |
434 | const char* choices[] = __VA_ARGS__; \ | |
435 | options::parse_choices(option_name, arg, retval, \ | |
436 | choices, sizeof(choices) / sizeof(*choices)); \ | |
437 | } | |
438 | ||
2b706932 ILT |
439 | // This is like DEFINE_bool, but VARNAME is the name of a different |
440 | // option. This option becomes an alias for that one. INVERT is true | |
441 | // if this option is an inversion of the other one. | |
442 | #define DEFINE_bool_alias(option__, varname__, dashes__, shortname__, \ | |
443 | helpstring__, no_helpstring__, invert__) \ | |
444 | private: \ | |
445 | struct Struct_##option__ : public options::Struct_var \ | |
446 | { \ | |
447 | Struct_##option__() \ | |
448 | : option(#option__, dashes__, shortname__, "", helpstring__, \ | |
449 | NULL, false, this) \ | |
450 | { } \ | |
451 | \ | |
452 | void \ | |
453 | parse_to_value(const char*, const char*, \ | |
454 | Command_line*, General_options* options) \ | |
455 | { \ | |
456 | options->set_##varname__(!invert__); \ | |
457 | options->set_user_set_##varname__(); \ | |
458 | } \ | |
459 | \ | |
460 | options::One_option option; \ | |
461 | }; \ | |
462 | Struct_##option__ option__##_; \ | |
463 | \ | |
464 | struct Struct_no_##option__ : public options::Struct_var \ | |
465 | { \ | |
466 | Struct_no_##option__() \ | |
467 | : option((dashes__ == options::DASH_Z \ | |
468 | ? "no" #option__ \ | |
469 | : "no-" #option__), \ | |
470 | dashes__, '\0', "", no_helpstring__, \ | |
471 | NULL, false, this) \ | |
472 | { } \ | |
473 | \ | |
474 | void \ | |
475 | parse_to_value(const char*, const char*, \ | |
476 | Command_line*, General_options* options) \ | |
477 | { \ | |
478 | options->set_##varname__(invert__); \ | |
479 | options->set_user_set_##varname__(); \ | |
480 | } \ | |
481 | \ | |
482 | options::One_option option; \ | |
483 | }; \ | |
484 | Struct_no_##option__ no_##option__##_initializer_ | |
485 | ||
ee1fe73e ILT |
486 | // This is used for non-standard flags. It defines no functions; it |
487 | // just calls General_options::parse_VARNAME whenever the flag is | |
488 | // seen. We declare parse_VARNAME as a static member of | |
489 | // General_options; you are responsible for defining it there. | |
490 | // helparg__ should be NULL iff this special-option is a boolean. | |
491 | #define DEFINE_special(varname__, dashes__, shortname__, \ | |
492 | helpstring__, helparg__) \ | |
493 | private: \ | |
494 | void parse_##varname__(const char* option, const char* arg, \ | |
495 | Command_line* inputs); \ | |
496 | struct Struct_##varname__ : public options::Struct_special \ | |
497 | { \ | |
498 | Struct_##varname__() \ | |
499 | : options::Struct_special(#varname__, dashes__, shortname__, \ | |
500 | &General_options::parse_##varname__, \ | |
501 | helpstring__, helparg__) \ | |
502 | { } \ | |
503 | }; \ | |
504 | Struct_##varname__ varname__##_initializer_ | |
bae7f79e | 505 | |
086a1841 ILT |
506 | // An option that takes an optional string argument. If the option is |
507 | // used with no argument, the value will be the default, and | |
508 | // user_set_via_option will be true. | |
509 | #define DEFINE_optional_string(varname__, dashes__, shortname__, \ | |
510 | default_value__, \ | |
511 | helpstring__, helparg__) \ | |
512 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
513 | default_value__, helpstring__, helparg__, true, \ | |
514 | const char*, const char*, options::parse_optional_string) | |
bae7f79e | 515 | |
ad2d6943 ILT |
516 | // A directory to search. For each directory we record whether it is |
517 | // in the sysroot. We need to know this so that, if a linker script | |
518 | // is found within the sysroot, we will apply the sysroot to any files | |
519 | // named by that script. | |
520 | ||
521 | class Search_directory | |
522 | { | |
523 | public: | |
524 | // We need a default constructor because we put this in a | |
525 | // std::vector. | |
526 | Search_directory() | |
527 | : name_(NULL), put_in_sysroot_(false), is_in_sysroot_(false) | |
528 | { } | |
529 | ||
530 | // This is the usual constructor. | |
2ea97941 ILT |
531 | Search_directory(const char* name, bool put_in_sysroot) |
532 | : name_(name), put_in_sysroot_(put_in_sysroot), is_in_sysroot_(false) | |
15893b88 ILT |
533 | { |
534 | if (this->name_.empty()) | |
535 | this->name_ = "."; | |
536 | } | |
ad2d6943 ILT |
537 | |
538 | // This is called if we have a sysroot. The sysroot is prefixed to | |
539 | // any entries for which put_in_sysroot_ is true. is_in_sysroot_ is | |
540 | // set to true for any enries which are in the sysroot (this will | |
541 | // naturally include any entries for which put_in_sysroot_ is true). | |
542 | // SYSROOT is the sysroot, CANONICAL_SYSROOT is the result of | |
543 | // passing SYSROOT to lrealpath. | |
544 | void | |
545 | add_sysroot(const char* sysroot, const char* canonical_sysroot); | |
546 | ||
547 | // Get the directory name. | |
548 | const std::string& | |
549 | name() const | |
550 | { return this->name_; } | |
551 | ||
552 | // Return whether this directory is in the sysroot. | |
553 | bool | |
554 | is_in_sysroot() const | |
555 | { return this->is_in_sysroot_; } | |
556 | ||
fd9d194f ILT |
557 | // Return whether this is considered a system directory. |
558 | bool | |
559 | is_system_directory() const | |
560 | { return this->put_in_sysroot_ || this->is_in_sysroot_; } | |
561 | ||
ad2d6943 | 562 | private: |
fd9d194f | 563 | // The directory name. |
ad2d6943 | 564 | std::string name_; |
fd9d194f ILT |
565 | // True if the sysroot should be added as a prefix for this |
566 | // directory (if there is a sysroot). This is true for system | |
567 | // directories that we search by default. | |
ad2d6943 | 568 | bool put_in_sysroot_; |
fd9d194f ILT |
569 | // True if this directory is in the sysroot (if there is a sysroot). |
570 | // This is true if there is a sysroot and either 1) put_in_sysroot_ | |
571 | // is true, or 2) the directory happens to be in the sysroot based | |
572 | // on a pathname comparison. | |
ad2d6943 ILT |
573 | bool is_in_sysroot_; |
574 | }; | |
575 | ||
bae7f79e ILT |
576 | class General_options |
577 | { | |
ee1fe73e ILT |
578 | private: |
579 | // NOTE: For every option that you add here, also consider if you | |
580 | // should add it to Position_dependent_options. | |
581 | DEFINE_special(help, options::TWO_DASHES, '\0', | |
a4d4b13f | 582 | N_("Report usage information"), NULL); |
ee1fe73e | 583 | DEFINE_special(version, options::TWO_DASHES, 'v', |
a4d4b13f | 584 | N_("Report version information"), NULL); |
b5be4a7c DM |
585 | DEFINE_special(V, options::EXACTLY_ONE_DASH, '\0', |
586 | N_("Report version and target information"), NULL); | |
ee1fe73e | 587 | |
fee2edb1 ILT |
588 | // These options are sorted approximately so that for each letter in |
589 | // the alphabet, we show the option whose shortname is that letter | |
590 | // (if any) and then every longname that starts with that letter (in | |
591 | // alphabetical order). For both, lowercase sorts before uppercase. | |
592 | // The -z options come last. | |
593 | ||
7eaea549 ILT |
594 | DEFINE_bool(add_needed, options::TWO_DASHES, '\0', false, |
595 | N_("Not supported"), | |
596 | N_("Do not copy DT_NEEDED tags from shared libraries")); | |
597 | ||
9c4ae156 ILT |
598 | DEFINE_bool_alias(allow_multiple_definition, muldefs, options::TWO_DASHES, |
599 | '\0', N_("Allow multiple definitions of symbols"), | |
600 | N_("Do not allow multiple definitions"), false); | |
30bc8c46 | 601 | |
ee1fe73e | 602 | DEFINE_bool(allow_shlib_undefined, options::TWO_DASHES, '\0', false, |
a4d4b13f ILT |
603 | N_("Allow unresolved references in shared libraries"), |
604 | N_("Do not allow unresolved references in shared libraries")); | |
ee1fe73e ILT |
605 | |
606 | DEFINE_bool(as_needed, options::TWO_DASHES, '\0', false, | |
7eaea549 ILT |
607 | N_("Only set DT_NEEDED for shared libraries if used"), |
608 | N_("Always DT_NEEDED for shared libraries")); | |
ee1fe73e | 609 | |
fe35d28d ILT |
610 | DEFINE_enum(assert, options::ONE_DASH, '\0', NULL, |
611 | N_("Ignored"), N_("[ignored]"), | |
612 | {"definitions", "nodefinitions", "nosymbolic", "pure-text"}); | |
613 | ||
fee2edb1 ILT |
614 | // This should really be an "enum", but it's too easy for folks to |
615 | // forget to update the list as they add new targets. So we just | |
616 | // accept any string. We'll fail later (when the string is parsed), | |
617 | // if the target isn't actually supported. | |
618 | DEFINE_string(format, options::TWO_DASHES, 'b', "elf", | |
619 | N_("Set input format"), ("[elf,binary]")); | |
620 | ||
ee1fe73e | 621 | DEFINE_bool(Bdynamic, options::ONE_DASH, '\0', true, |
a4d4b13f | 622 | N_("-l searches for shared libraries"), NULL); |
2b706932 ILT |
623 | DEFINE_bool_alias(Bstatic, Bdynamic, options::ONE_DASH, '\0', |
624 | N_("-l does not search for shared libraries"), NULL, | |
625 | true); | |
ee1fe73e ILT |
626 | |
627 | DEFINE_bool(Bsymbolic, options::ONE_DASH, '\0', false, | |
a4d4b13f | 628 | N_("Bind defined symbols locally"), NULL); |
ee1fe73e | 629 | |
f1f70eae ILT |
630 | DEFINE_bool(Bsymbolic_functions, options::ONE_DASH, '\0', false, |
631 | N_("Bind defined function symbols locally"), NULL); | |
632 | ||
8ed814a9 ILT |
633 | DEFINE_optional_string(build_id, options::TWO_DASHES, '\0', "sha1", |
634 | N_("Generate build ID note"), | |
635 | N_("[=STYLE]")); | |
636 | ||
34810851 ILT |
637 | DEFINE_bool(check_sections, options::TWO_DASHES, '\0', true, |
638 | N_("Check segment addresses for overlaps (default)"), | |
639 | N_("Do not check segment addresses for overlaps")); | |
640 | ||
ee1fe73e ILT |
641 | #ifdef HAVE_ZLIB_H |
642 | DEFINE_enum(compress_debug_sections, options::TWO_DASHES, '\0', "none", | |
a4d4b13f ILT |
643 | N_("Compress .debug_* sections in the output file"), |
644 | ("[none,zlib]"), | |
ee1fe73e ILT |
645 | {"none", "zlib"}); |
646 | #else | |
647 | DEFINE_enum(compress_debug_sections, options::TWO_DASHES, '\0', "none", | |
a4d4b13f ILT |
648 | N_("Compress .debug_* sections in the output file"), |
649 | N_("[none]"), | |
ee1fe73e ILT |
650 | {"none"}); |
651 | #endif | |
0dfbdef4 | 652 | |
7eaea549 ILT |
653 | DEFINE_bool(copy_dt_needed_entries, options::TWO_DASHES, '\0', false, |
654 | N_("Not supported"), | |
655 | N_("Do not copy DT_NEEDED tags from shared libraries")); | |
656 | ||
dde3f402 ILT |
657 | DEFINE_bool(cref, options::TWO_DASHES, '\0', false, |
658 | N_("Output cross reference table"), | |
659 | N_("Do not output cross reference table")); | |
660 | ||
ee1fe73e | 661 | DEFINE_bool(define_common, options::TWO_DASHES, 'd', false, |
a4d4b13f ILT |
662 | N_("Define common symbols"), |
663 | N_("Do not define common symbols")); | |
ee1fe73e | 664 | DEFINE_bool(dc, options::ONE_DASH, '\0', false, |
a4d4b13f | 665 | N_("Alias for -d"), NULL); |
ee1fe73e | 666 | DEFINE_bool(dp, options::ONE_DASH, '\0', false, |
a4d4b13f | 667 | N_("Alias for -d"), NULL); |
d391083d | 668 | |
fee2edb1 | 669 | DEFINE_string(debug, options::TWO_DASHES, '\0', "", |
2285a610 ILT |
670 | N_("Turn on debugging"), |
671 | N_("[all,files,script,task][,...]")); | |
fee2edb1 | 672 | |
ee1fe73e | 673 | DEFINE_special(defsym, options::TWO_DASHES, '\0', |
a4d4b13f | 674 | N_("Define a symbol"), N_("SYMBOL=EXPRESSION")); |
a6badf5a | 675 | |
086a1841 ILT |
676 | DEFINE_optional_string(demangle, options::TWO_DASHES, '\0', NULL, |
677 | N_("Demangle C++ symbols in log messages"), | |
678 | N_("[=STYLE]")); | |
679 | ||
680 | DEFINE_bool(no_demangle, options::TWO_DASHES, '\0', false, | |
681 | N_("Do not demangle C++ symbols in log messages"), | |
682 | NULL); | |
fced7afd | 683 | |
ee1fe73e | 684 | DEFINE_bool(detect_odr_violations, options::TWO_DASHES, '\0', false, |
a4d4b13f | 685 | N_("Try to detect violations of the One Definition Rule"), |
ee1fe73e ILT |
686 | NULL); |
687 | ||
ebcc8304 ILT |
688 | DEFINE_bool(discard_all, options::TWO_DASHES, 'x', false, |
689 | N_("Delete all local symbols"), NULL); | |
bb04269c DK |
690 | DEFINE_bool(discard_locals, options::TWO_DASHES, 'X', false, |
691 | N_("Delete all temporary local symbols"), NULL); | |
692 | ||
c82fbeee CS |
693 | DEFINE_bool(dynamic_list_data, options::TWO_DASHES, '\0', false, |
694 | N_("Add data symbols to dynamic symbols"), NULL); | |
695 | ||
696 | DEFINE_bool(dynamic_list_cpp_new, options::TWO_DASHES, '\0', false, | |
697 | N_("Add C++ operator new/delete to dynamic symbols"), NULL); | |
698 | ||
699 | DEFINE_bool(dynamic_list_cpp_typeinfo, options::TWO_DASHES, '\0', false, | |
700 | N_("Add C++ typeinfo to dynamic symbols"), NULL); | |
701 | ||
702 | DEFINE_special(dynamic_list, options::TWO_DASHES, '\0', | |
703 | N_("Read a list of dynamic symbols"), N_("FILE")); | |
704 | ||
ee1fe73e | 705 | DEFINE_string(entry, options::TWO_DASHES, 'e', NULL, |
a4d4b13f | 706 | N_("Set program start address"), N_("ADDRESS")); |
ee1fe73e | 707 | |
65514900 CC |
708 | DEFINE_special(exclude_libs, options::TWO_DASHES, '\0', |
709 | N_("Exclude libraries from automatic export"), | |
710 | N_(("lib,lib ..."))); | |
711 | ||
ee1fe73e | 712 | DEFINE_bool(export_dynamic, options::TWO_DASHES, 'E', false, |
ee769c88 ILT |
713 | N_("Export all dynamic symbols"), |
714 | N_("Do not export all dynamic symbols (default)")); | |
dbe717ef | 715 | |
7296d933 DK |
716 | DEFINE_special(EB, options::ONE_DASH, '\0', |
717 | N_("Link big-endian objects."), NULL); | |
718 | ||
ee1fe73e | 719 | DEFINE_bool(eh_frame_hdr, options::TWO_DASHES, '\0', false, |
a4d4b13f | 720 | N_("Create exception frame header"), NULL); |
ee1fe73e | 721 | |
7296d933 DK |
722 | DEFINE_special(EL, options::ONE_DASH, '\0', |
723 | N_("Link little-endian objects."), NULL); | |
724 | ||
ce0d1972 DK |
725 | DEFINE_bool(enum_size_warning, options::TWO_DASHES, '\0', true, NULL, |
726 | N_("(ARM only) Do not warn about objects with incompatible " | |
727 | "enum sizes")); | |
728 | ||
d82a5bcc ILT |
729 | DEFINE_bool(fatal_warnings, options::TWO_DASHES, '\0', false, |
730 | N_("Treat warnings as errors"), | |
731 | N_("Do not treat warnings as errors")); | |
732 | ||
c6585162 ILT |
733 | DEFINE_string(fini, options::ONE_DASH, '\0', "_fini", |
734 | N_("Call SYMBOL at unload-time"), N_("SYMBOL")); | |
735 | ||
41263c05 DK |
736 | DEFINE_bool(fix_cortex_a8, options::TWO_DASHES, '\0', false, |
737 | N_("(ARM only) Fix binaries for Cortex-A8 erratum."), | |
738 | N_("(ARM only) Do not fix binaries for Cortex-A8 erratum.")); | |
739 | ||
85fdf906 AH |
740 | DEFINE_bool(merge_exidx_entries, options::TWO_DASHES, '\0', true, |
741 | N_("(ARM only) Merge exidx entries in debuginfo."), | |
742 | N_("(ARM only) Do not merge exidx entries in debuginfo.")); | |
743 | ||
9b2fd367 DK |
744 | DEFINE_special(fix_v4bx, options::TWO_DASHES, '\0', |
745 | N_("(ARM only) Rewrite BX rn as MOV pc, rn for ARMv4"), | |
746 | NULL); | |
747 | ||
748 | DEFINE_special(fix_v4bx_interworking, options::TWO_DASHES, '\0', | |
749 | N_("(ARM only) Rewrite BX rn branch to ARMv4 interworking " | |
750 | "veneer"), | |
751 | NULL); | |
752 | ||
fe35d28d ILT |
753 | DEFINE_bool(g, options::EXACTLY_ONE_DASH, '\0', false, |
754 | N_("Ignored"), NULL); | |
755 | ||
ee1fe73e | 756 | DEFINE_string(soname, options::ONE_DASH, 'h', NULL, |
a4d4b13f | 757 | N_("Set shared library name"), N_("FILENAME")); |
ee1fe73e | 758 | |
fe35d28d ILT |
759 | DEFINE_bool(i, options::EXACTLY_ONE_DASH, '\0', false, |
760 | N_("Ignored"), NULL); | |
761 | ||
c18476e7 ILT |
762 | DEFINE_double(hash_bucket_empty_fraction, options::TWO_DASHES, '\0', 0.0, |
763 | N_("Min fraction of empty buckets in dynamic hash"), | |
764 | N_("FRACTION")); | |
765 | ||
13670ee6 | 766 | DEFINE_enum(hash_style, options::TWO_DASHES, '\0', "sysv", |
a4d4b13f | 767 | N_("Dynamic hash style"), N_("[sysv,gnu,both]"), |
13670ee6 ILT |
768 | {"sysv", "gnu", "both"}); |
769 | ||
ee1fe73e | 770 | DEFINE_string(dynamic_linker, options::TWO_DASHES, 'I', NULL, |
a4d4b13f | 771 | N_("Set dynamic linker path"), N_("PROGRAM")); |
ee1fe73e | 772 | |
266d0a74 ILT |
773 | DEFINE_bool(incremental, options::TWO_DASHES, '\0', false, |
774 | N_("Work in progress; do not use"), | |
775 | N_("Do a full build")); | |
776 | ||
777 | DEFINE_special(incremental_changed, options::TWO_DASHES, '\0', | |
778 | N_("Assume files changed"), NULL); | |
779 | ||
780 | DEFINE_special(incremental_unchanged, options::TWO_DASHES, '\0', | |
781 | N_("Assume files didn't change"), NULL); | |
782 | ||
783 | DEFINE_special(incremental_unknown, options::TWO_DASHES, '\0', | |
784 | N_("Use timestamps to check files (default)"), NULL); | |
785 | ||
c6585162 ILT |
786 | DEFINE_string(init, options::ONE_DASH, '\0', "_init", |
787 | N_("Call SYMBOL at load-time"), N_("SYMBOL")); | |
788 | ||
fee2edb1 ILT |
789 | DEFINE_special(just_symbols, options::TWO_DASHES, '\0', |
790 | N_("Read only symbol values from FILE"), N_("FILE")); | |
791 | ||
a2a5469e | 792 | DEFINE_bool(map_whole_files, options::TWO_DASHES, '\0', |
2c849493 ILT |
793 | sizeof(void*) >= 8, |
794 | N_("Map whole files to memory (default on 64-bit hosts)"), | |
795 | N_("Map relevant file parts to memory (default on 32-bit " | |
796 | "hosts)")); | |
a2a5469e CC |
797 | DEFINE_bool(keep_files_mapped, options::TWO_DASHES, '\0', true, |
798 | N_("Keep files mapped across passes (default)"), | |
799 | N_("Release mapped files after each pass")); | |
2c849493 | 800 | |
ee1fe73e | 801 | DEFINE_special(library, options::TWO_DASHES, 'l', |
a4d4b13f | 802 | N_("Search for library LIBNAME"), N_("LIBNAME")); |
bae7f79e | 803 | |
ee1fe73e | 804 | DEFINE_dirlist(library_path, options::TWO_DASHES, 'L', |
a4d4b13f | 805 | N_("Add directory to search path"), N_("DIR")); |
ee1fe73e | 806 | |
91e75c8a RÁE |
807 | DEFINE_bool(nostdlib, options::ONE_DASH, '\0', false, |
808 | N_(" Only search directories specified on the command line."), | |
809 | NULL); | |
810 | ||
ee1fe73e | 811 | DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "", |
a4d4b13f | 812 | N_("Ignored for compatibility"), N_("EMULATION")); |
ee1fe73e | 813 | |
7d9e3d98 ILT |
814 | DEFINE_bool(print_map, options::TWO_DASHES, 'M', false, |
815 | N_("Write map file on standard output"), NULL); | |
816 | DEFINE_string(Map, options::ONE_DASH, '\0', NULL, N_("Write map file"), | |
817 | N_("MAPFILENAME")); | |
818 | ||
af6156ef ILT |
819 | DEFINE_bool(nmagic, options::TWO_DASHES, 'n', false, |
820 | N_("Do not page align data"), NULL); | |
821 | DEFINE_bool(omagic, options::EXACTLY_TWO_DASHES, 'N', false, | |
822 | N_("Do not page align data, do not make text readonly"), | |
823 | N_("Page align data, make text readonly")); | |
824 | ||
7c414435 DM |
825 | DEFINE_enable(new_dtags, options::EXACTLY_TWO_DASHES, '\0', false, |
826 | N_("Enable use of DT_RUNPATH and DT_FLAGS"), | |
827 | N_("Disable use of DT_RUNPATH and DT_FLAGS")); | |
828 | ||
cdb0b8f5 ILT |
829 | DEFINE_bool(noinhibit_exec, options::TWO_DASHES, '\0', false, |
830 | N_("Create an output file even if errors occur"), NULL); | |
831 | ||
f3e9c5c5 ILT |
832 | DEFINE_bool_alias(no_undefined, defs, options::TWO_DASHES, '\0', |
833 | N_("Report undefined symbols (even with --shared)"), | |
834 | NULL, false); | |
835 | ||
ee1fe73e | 836 | DEFINE_string(output, options::TWO_DASHES, 'o', "a.out", |
a4d4b13f | 837 | N_("Set output file name"), N_("FILE")); |
ee1fe73e ILT |
838 | |
839 | DEFINE_uint(optimize, options::EXACTLY_ONE_DASH, 'O', 0, | |
a4d4b13f | 840 | N_("Optimize output file size"), N_("LEVEL")); |
ee1fe73e | 841 | |
a4d4b13f ILT |
842 | DEFINE_string(oformat, options::EXACTLY_TWO_DASHES, '\0', "elf", |
843 | N_("Set output format"), N_("[binary]")); | |
ee1fe73e | 844 | |
7296d933 DK |
845 | DEFINE_bool(p, options::ONE_DASH, '\0', false, |
846 | N_("(ARM only) Ignore for backward compatibility"), NULL); | |
847 | ||
374ad285 ILT |
848 | DEFINE_bool(pie, options::ONE_DASH, '\0', false, |
849 | N_("Create a position independent executable"), NULL); | |
850 | DEFINE_bool_alias(pic_executable, pie, options::TWO_DASHES, '\0', | |
851 | N_("Create a position independent executable"), NULL, | |
852 | false); | |
853 | ||
7296d933 DK |
854 | DEFINE_bool(pipeline_knowledge, options::ONE_DASH, '\0', false, |
855 | NULL, N_("(ARM only) Ignore for backward compatibility")); | |
856 | ||
89fc3421 CC |
857 | #ifdef ENABLE_PLUGINS |
858 | DEFINE_special(plugin, options::TWO_DASHES, '\0', | |
4674ecfc CC |
859 | N_("Load a plugin library"), N_("PLUGIN")); |
860 | DEFINE_special(plugin_opt, options::TWO_DASHES, '\0', | |
861 | N_("Pass an option to the plugin"), N_("OPTION")); | |
89fc3421 CC |
862 | #endif |
863 | ||
ac45a351 CC |
864 | DEFINE_bool(preread_archive_symbols, options::TWO_DASHES, '\0', false, |
865 | N_("Preread archive symbols when multi-threaded"), NULL); | |
89fc3421 | 866 | |
92de84a6 ILT |
867 | DEFINE_string(print_symbol_counts, options::TWO_DASHES, '\0', NULL, |
868 | N_("Print symbols defined and used for each input"), | |
869 | N_("FILENAME")); | |
870 | ||
b5be4a7c DM |
871 | DEFINE_bool(Qy, options::EXACTLY_ONE_DASH, '\0', false, |
872 | N_("Ignored for SVR4 compatibility"), NULL); | |
873 | ||
ee1fe73e | 874 | DEFINE_bool(emit_relocs, options::TWO_DASHES, 'q', false, |
a4d4b13f | 875 | N_("Generate relocations in output"), NULL); |
ee1fe73e ILT |
876 | |
877 | DEFINE_bool(relocatable, options::EXACTLY_ONE_DASH, 'r', false, | |
a4d4b13f | 878 | N_("Generate relocatable output"), NULL); |
ee1fe73e | 879 | |
706e1f5e ILT |
880 | DEFINE_bool(relax, options::TWO_DASHES, '\0', false, |
881 | N_("Relax branches on certain targets"), NULL); | |
882 | ||
719328e1 ILT |
883 | DEFINE_string(retain_symbols_file, options::TWO_DASHES, '\0', NULL, |
884 | N_("keep only symbols listed in this file"), N_("FILE")); | |
8c604651 | 885 | |
ee1fe73e ILT |
886 | // -R really means -rpath, but can mean --just-symbols for |
887 | // compatibility with GNU ld. -rpath is always -rpath, so we list | |
888 | // it separately. | |
889 | DEFINE_special(R, options::EXACTLY_ONE_DASH, 'R', | |
a4d4b13f | 890 | N_("Add DIR to runtime search path"), N_("DIR")); |
ee1fe73e ILT |
891 | |
892 | DEFINE_dirlist(rpath, options::ONE_DASH, '\0', | |
a4d4b13f | 893 | N_("Add DIR to runtime search path"), N_("DIR")); |
ee1fe73e | 894 | |
ee1fe73e | 895 | DEFINE_dirlist(rpath_link, options::TWO_DASHES, '\0', |
a4d4b13f ILT |
896 | N_("Add DIR to link time shared library search path"), |
897 | N_("DIR")); | |
ee1fe73e | 898 | |
6e9ba2ca ST |
899 | DEFINE_string(section_ordering_file, options::TWO_DASHES, '\0', NULL, |
900 | N_("Layout sections in the order specified."), | |
901 | N_("FILENAME")); | |
902 | ||
a192ba05 ILT |
903 | DEFINE_special(section_start, options::TWO_DASHES, '\0', |
904 | N_("Set address of section"), N_("SECTION=ADDRESS")); | |
905 | ||
fc59c572 ILT |
906 | DEFINE_optional_string(sort_common, options::TWO_DASHES, '\0', NULL, |
907 | N_("Sort common symbols by alignment"), | |
908 | N_("[={ascending,descending}]")); | |
909 | ||
9e9e071b ILT |
910 | DEFINE_uint(spare_dynamic_tags, options::TWO_DASHES, '\0', 5, |
911 | N_("Dynamic tag slots to reserve (default 5)"), | |
912 | N_("COUNT")); | |
913 | ||
ee1fe73e | 914 | DEFINE_bool(strip_all, options::TWO_DASHES, 's', false, |
a4d4b13f | 915 | N_("Strip all symbols"), NULL); |
fee2edb1 ILT |
916 | DEFINE_bool(strip_debug, options::TWO_DASHES, 'S', false, |
917 | N_("Strip debugging information"), NULL); | |
62b01cb5 ILT |
918 | DEFINE_bool(strip_debug_non_line, options::TWO_DASHES, '\0', false, |
919 | N_("Emit only debug line number information"), NULL); | |
ee1fe73e | 920 | DEFINE_bool(strip_debug_gdb, options::TWO_DASHES, '\0', false, |
a4d4b13f | 921 | N_("Strip debug symbols that are unused by gdb " |
ee1fe73e | 922 | "(at least versions <= 6.7)"), NULL); |
fd06b4aa CC |
923 | DEFINE_bool(strip_lto_sections, options::TWO_DASHES, '\0', true, |
924 | N_("Strip LTO intermediate code sections"), NULL); | |
ee1fe73e | 925 | |
c0a62865 DK |
926 | DEFINE_int(stub_group_size, options::TWO_DASHES , '\0', 1, |
927 | N_("(ARM only) The maximum distance from instructions in a group " | |
928 | "of sections to their stubs. Negative values mean stubs " | |
929 | "are always after the group. 1 means using default size.\n"), | |
930 | N_("SIZE")); | |
931 | ||
f773f3d2 CC |
932 | DEFINE_bool(no_keep_memory, options::TWO_DASHES, '\0', false, |
933 | N_("Use less memory and more disk I/O " | |
934 | "(included only for compatibility with GNU ld)"), NULL); | |
3b293544 | 935 | |
fe35d28d | 936 | DEFINE_bool(shared, options::ONE_DASH, 'G', false, |
a4d4b13f | 937 | N_("Generate shared library"), NULL); |
ee1fe73e | 938 | |
3b293544 CF |
939 | DEFINE_bool(Bshareable, options::ONE_DASH, '\0', false, |
940 | N_("Generate shared library"), NULL); | |
941 | ||
364c7fa5 ILT |
942 | DEFINE_uint(split_stack_adjust_size, options::TWO_DASHES, '\0', 0x4000, |
943 | N_("Stack size when -fsplit-stack function calls non-split"), | |
944 | N_("SIZE")); | |
945 | ||
ee1fe73e ILT |
946 | // This is not actually special in any way, but I need to give it |
947 | // a non-standard accessor-function name because 'static' is a keyword. | |
948 | DEFINE_special(static, options::ONE_DASH, '\0', | |
a4d4b13f | 949 | N_("Do not link against shared libraries"), NULL); |
ee1fe73e | 950 | |
032ce4e9 ST |
951 | DEFINE_enum(icf, options::TWO_DASHES, '\0', "none", |
952 | N_("Identical Code Folding. " | |
21bb3914 ST |
953 | "\'--icf=safe\' Folds ctors, dtors and functions whose" |
954 | " pointers are definitely not taken."), | |
032ce4e9 ST |
955 | ("[none,all,safe]"), |
956 | {"none", "all", "safe"}); | |
ef15dade ST |
957 | |
958 | DEFINE_uint(icf_iterations, options::TWO_DASHES , '\0', 0, | |
959 | N_("Number of iterations of ICF (default 2)"), N_("COUNT")); | |
960 | ||
961 | DEFINE_bool(print_icf_sections, options::TWO_DASHES, '\0', false, | |
962 | N_("List folded identical sections on stderr"), | |
963 | N_("Do not list folded identical sections")); | |
964 | ||
48c187ce ST |
965 | DEFINE_set(keep_unique, options::TWO_DASHES, '\0', |
966 | N_("Do not fold this symbol during ICF"), N_("SYMBOL")); | |
967 | ||
6d03d481 | 968 | DEFINE_bool(gc_sections, options::TWO_DASHES, '\0', false, |
266d0a74 | 969 | N_("Remove unused sections"), |
6d03d481 | 970 | N_("Don't remove unused sections (default)")); |
266d0a74 | 971 | |
6d03d481 | 972 | DEFINE_bool(print_gc_sections, options::TWO_DASHES, '\0', false, |
266d0a74 | 973 | N_("List removed unused sections on stderr"), |
6d03d481 ST |
974 | N_("Do not list removed unused sections")); |
975 | ||
ee1fe73e | 976 | DEFINE_bool(stats, options::TWO_DASHES, '\0', false, |
a4d4b13f | 977 | N_("Print resource usage statistics"), NULL); |
ee1fe73e ILT |
978 | |
979 | DEFINE_string(sysroot, options::TWO_DASHES, '\0', "", | |
a4d4b13f | 980 | N_("Set target system root directory"), N_("DIR")); |
ee1fe73e | 981 | |
c5818ff1 CC |
982 | DEFINE_bool(trace, options::TWO_DASHES, 't', false, |
983 | N_("Print the name of each input file"), NULL); | |
984 | ||
ee1fe73e | 985 | DEFINE_special(script, options::TWO_DASHES, 'T', |
a4d4b13f | 986 | N_("Read linker script"), N_("FILE")); |
ee1fe73e ILT |
987 | |
988 | DEFINE_bool(threads, options::TWO_DASHES, '\0', false, | |
a4d4b13f ILT |
989 | N_("Run the linker multi-threaded"), |
990 | N_("Do not run the linker multi-threaded")); | |
ee1fe73e | 991 | DEFINE_uint(thread_count, options::TWO_DASHES, '\0', 0, |
a4d4b13f | 992 | N_("Number of threads to use"), N_("COUNT")); |
ee1fe73e | 993 | DEFINE_uint(thread_count_initial, options::TWO_DASHES, '\0', 0, |
a4d4b13f | 994 | N_("Number of threads to use in initial pass"), N_("COUNT")); |
ee1fe73e | 995 | DEFINE_uint(thread_count_middle, options::TWO_DASHES, '\0', 0, |
a4d4b13f | 996 | N_("Number of threads to use in middle pass"), N_("COUNT")); |
ee1fe73e | 997 | DEFINE_uint(thread_count_final, options::TWO_DASHES, '\0', 0, |
a4d4b13f | 998 | N_("Number of threads to use in final pass"), N_("COUNT")); |
ee1fe73e | 999 | |
fee2edb1 ILT |
1000 | DEFINE_uint64(Tbss, options::ONE_DASH, '\0', -1U, |
1001 | N_("Set the address of the bss segment"), N_("ADDRESS")); | |
1002 | DEFINE_uint64(Tdata, options::ONE_DASH, '\0', -1U, | |
1003 | N_("Set the address of the data segment"), N_("ADDRESS")); | |
1004 | DEFINE_uint64(Ttext, options::ONE_DASH, '\0', -1U, | |
1005 | N_("Set the address of the text segment"), N_("ADDRESS")); | |
1006 | ||
f3e9c5c5 ILT |
1007 | DEFINE_set(undefined, options::TWO_DASHES, 'u', |
1008 | N_("Create undefined reference to SYMBOL"), N_("SYMBOL")); | |
2b706932 | 1009 | |
2285a610 ILT |
1010 | DEFINE_bool(verbose, options::TWO_DASHES, '\0', false, |
1011 | N_("Synonym for --debug=files"), NULL); | |
1012 | ||
fee2edb1 ILT |
1013 | DEFINE_special(version_script, options::TWO_DASHES, '\0', |
1014 | N_("Read version script"), N_("FILE")); | |
1015 | ||
1ae4d23b ILT |
1016 | DEFINE_bool(warn_common, options::TWO_DASHES, '\0', false, |
1017 | N_("Warn about duplicate common symbols"), | |
1018 | N_("Do not warn about duplicate common symbols (default)")); | |
1019 | ||
37a9ac43 ILT |
1020 | DEFINE_bool(warn_constructors, options::TWO_DASHES, '\0', false, |
1021 | N_("Ignored"), N_("Ignored")); | |
1022 | ||
7296d933 DK |
1023 | DEFINE_bool(warn_mismatch, options::TWO_DASHES, '\0', true, |
1024 | NULL, N_("Don't warn about mismatched input files")); | |
1025 | ||
6eda8c29 ILT |
1026 | DEFINE_bool(warn_multiple_gp, options::TWO_DASHES, '\0', false, |
1027 | N_("Ignored"), NULL); | |
1028 | ||
15f8229b ILT |
1029 | DEFINE_bool(warn_search_mismatch, options::TWO_DASHES, '\0', true, |
1030 | N_("Warn when skipping an incompatible library"), | |
1031 | N_("Don't warn when skipping an incompatible library")); | |
1032 | ||
b9674e17 ILT |
1033 | DEFINE_bool(warn_shared_textrel, options::TWO_DASHES, '\0', false, |
1034 | N_("Warn if text segment is not shareable"), | |
1035 | N_("Do not warn if text segment is not shareable (default)")); | |
1036 | ||
dc3f80fe ILT |
1037 | DEFINE_bool(warn_unresolved_symbols, options::TWO_DASHES, '\0', false, |
1038 | N_("Report unresolved symbols as warnings"), | |
1039 | NULL); | |
1040 | DEFINE_bool_alias(error_unresolved_symbols, warn_unresolved_symbols, | |
1041 | options::TWO_DASHES, '\0', | |
1042 | N_("Report unresolved symbols as errors"), | |
1043 | NULL, true); | |
1044 | ||
ce0d1972 DK |
1045 | DEFINE_bool(wchar_size_warning, options::TWO_DASHES, '\0', true, NULL, |
1046 | N_("(ARM only) Do not warn about objects with incompatible " | |
1047 | "wchar_t sizes")); | |
1048 | ||
ee1fe73e | 1049 | DEFINE_bool(whole_archive, options::TWO_DASHES, '\0', false, |
a4d4b13f ILT |
1050 | N_("Include all archive contents"), |
1051 | N_("Include only needed archive contents")); | |
ee1fe73e | 1052 | |
c5818ff1 CC |
1053 | DEFINE_set(wrap, options::TWO_DASHES, '\0', |
1054 | N_("Use wrapper functions for SYMBOL"), N_("SYMBOL")); | |
1055 | ||
1056 | DEFINE_set(trace_symbol, options::TWO_DASHES, 'y', | |
1057 | N_("Trace references to symbol"), N_("SYMBOL")); | |
0864d551 | 1058 | |
62dfdd4d ILT |
1059 | DEFINE_bool(undefined_version, options::TWO_DASHES, '\0', true, |
1060 | N_("Allow unused version in script (default)"), | |
1061 | N_("Do not allow unused version in script")); | |
1062 | ||
706e1f5e ILT |
1063 | DEFINE_string(Y, options::EXACTLY_ONE_DASH, 'Y', "", |
1064 | N_("Default search path for Solaris compatibility"), | |
1065 | N_("PATH")); | |
1066 | ||
ee1fe73e | 1067 | DEFINE_special(start_group, options::TWO_DASHES, '(', |
a4d4b13f | 1068 | N_("Start a library search group"), NULL); |
ee1fe73e | 1069 | DEFINE_special(end_group, options::TWO_DASHES, ')', |
a4d4b13f | 1070 | N_("End a library search group"), NULL); |
ee1fe73e | 1071 | |
b0193076 RÁE |
1072 | |
1073 | DEFINE_special(start_lib, options::TWO_DASHES, '\0', | |
1074 | N_("Start a library"), NULL); | |
1075 | DEFINE_special(end_lib, options::TWO_DASHES, '\0', | |
1076 | N_("End a library "), NULL); | |
1077 | ||
fee2edb1 | 1078 | // The -z options. |
ee1fe73e | 1079 | |
d98bc257 ILT |
1080 | DEFINE_bool(combreloc, options::DASH_Z, '\0', true, |
1081 | N_("Sort dynamic relocs"), | |
1082 | N_("Do not sort dynamic relocs")); | |
fee2edb1 ILT |
1083 | DEFINE_uint64(common_page_size, options::DASH_Z, '\0', 0, |
1084 | N_("Set common page size to SIZE"), N_("SIZE")); | |
eb42429a ILT |
1085 | DEFINE_bool(defs, options::DASH_Z, '\0', false, |
1086 | N_("Report undefined symbols (even with --shared)"), | |
1087 | NULL); | |
ee1fe73e | 1088 | DEFINE_bool(execstack, options::DASH_Z, '\0', false, |
a4d4b13f | 1089 | N_("Mark output as requiring executable stack"), NULL); |
7c414435 DM |
1090 | DEFINE_bool(initfirst, options::DASH_Z, '\0', false, |
1091 | N_("Mark DSO to be initialized first at runtime"), | |
1092 | NULL); | |
1093 | DEFINE_bool(interpose, options::DASH_Z, '\0', false, | |
1094 | N_("Mark object to interpose all DSOs but executable"), | |
1095 | NULL); | |
e1c74d60 ILT |
1096 | DEFINE_bool(lazy, options::DASH_Z, '\0', false, |
1097 | N_("Mark object for lazy runtime binding (default)"), | |
1098 | NULL); | |
7c414435 DM |
1099 | DEFINE_bool(loadfltr, options::DASH_Z, '\0', false, |
1100 | N_("Mark object requiring immediate process"), | |
1101 | NULL); | |
e1c74d60 ILT |
1102 | DEFINE_uint64(max_page_size, options::DASH_Z, '\0', 0, |
1103 | N_("Set maximum page size to SIZE"), N_("SIZE")); | |
30bc8c46 ILT |
1104 | DEFINE_bool(muldefs, options::DASH_Z, '\0', false, |
1105 | N_("Allow multiple definitions of symbols"), | |
1106 | NULL); | |
1107 | // copyreloc is here in the list because there is only -z | |
1108 | // nocopyreloc, not -z copyreloc. | |
966d4097 DK |
1109 | DEFINE_bool(copyreloc, options::DASH_Z, '\0', true, |
1110 | NULL, | |
1111 | N_("Do not create copy relocs")); | |
7c414435 DM |
1112 | DEFINE_bool(nodefaultlib, options::DASH_Z, '\0', false, |
1113 | N_("Mark object not to use default search paths"), | |
1114 | NULL); | |
1115 | DEFINE_bool(nodelete, options::DASH_Z, '\0', false, | |
1116 | N_("Mark DSO non-deletable at runtime"), | |
1117 | NULL); | |
1118 | DEFINE_bool(nodlopen, options::DASH_Z, '\0', false, | |
1119 | N_("Mark DSO not available to dlopen"), | |
1120 | NULL); | |
1121 | DEFINE_bool(nodump, options::DASH_Z, '\0', false, | |
1122 | N_("Mark DSO not available to dldump"), | |
1123 | NULL); | |
e1c74d60 ILT |
1124 | DEFINE_bool(noexecstack, options::DASH_Z, '\0', false, |
1125 | N_("Mark output as not requiring executable stack"), NULL); | |
1126 | DEFINE_bool(now, options::DASH_Z, '\0', false, | |
1127 | N_("Mark object for immediate function binding"), | |
1128 | NULL); | |
7be8330a CD |
1129 | DEFINE_bool(origin, options::DASH_Z, '\0', false, |
1130 | N_("Mark DSO to indicate that needs immediate $ORIGIN " | |
1131 | "processing at runtime"), NULL); | |
e1c74d60 ILT |
1132 | DEFINE_bool(relro, options::DASH_Z, '\0', false, |
1133 | N_("Where possible mark variables read-only after relocation"), | |
1134 | N_("Don't mark variables read-only after relocation")); | |
ffeef7df ILT |
1135 | DEFINE_bool(text, options::DASH_Z, '\0', false, |
1136 | N_("Do not permit relocations in read-only segments"), | |
1137 | NULL); | |
1138 | DEFINE_bool_alias(textoff, text, options::DASH_Z, '\0', | |
1139 | N_("Permit relocations in read-only segments (default)"), | |
1140 | NULL, true); | |
bae7f79e | 1141 | |
ee1fe73e ILT |
1142 | public: |
1143 | typedef options::Dir_list Dir_list; | |
ca3a67a5 | 1144 | |
ee1fe73e | 1145 | General_options(); |
61ba1cf9 | 1146 | |
ee1fe73e ILT |
1147 | // Does post-processing on flags, making sure they all have |
1148 | // non-conflicting values. Also converts some flags from their | |
1149 | // "standard" types (string, etc), to another type (enum, DirList), | |
1150 | // which can be accessed via a separate method. Dies if it notices | |
1151 | // any problems. | |
1152 | void finalize(); | |
516cb3d0 | 1153 | |
459c9f1c ILT |
1154 | // True if we printed the version information. |
1155 | bool | |
1156 | printed_version() const | |
1157 | { return this->printed_version_; } | |
1158 | ||
ee1fe73e ILT |
1159 | // The macro defines output() (based on --output), but that's a |
1160 | // generic name. Provide this alternative name, which is clearer. | |
8851ecca | 1161 | const char* |
ee1fe73e ILT |
1162 | output_file_name() const |
1163 | { return this->output(); } | |
92e059d8 | 1164 | |
8851ecca ILT |
1165 | // This is not defined via a flag, but combines flags to say whether |
1166 | // the output is position-independent or not. | |
1167 | bool | |
1168 | output_is_position_independent() const | |
374ad285 | 1169 | { return this->shared() || this->pie(); } |
8851ecca | 1170 | |
183fd0e3 AO |
1171 | // Return true if the output is something that can be exec()ed, such |
1172 | // as a static executable, or a position-dependent or | |
1173 | // position-independent executable, but not a dynamic library or an | |
1174 | // object file. | |
1175 | bool | |
1176 | output_is_executable() const | |
374ad285 | 1177 | { return !this->shared() && !this->relocatable(); } |
183fd0e3 | 1178 | |
ee1fe73e ILT |
1179 | // This would normally be static(), and defined automatically, but |
1180 | // since static is a keyword, we need to come up with our own name. | |
bae7f79e ILT |
1181 | bool |
1182 | is_static() const | |
ee1fe73e | 1183 | { return static_; } |
756ac4a8 | 1184 | |
ee1fe73e ILT |
1185 | // In addition to getting the input and output formats as a string |
1186 | // (via format() and oformat()), we also give access as an enum. | |
1187 | enum Object_format | |
1188 | { | |
1189 | // Ordinary ELF. | |
1190 | OBJECT_FORMAT_ELF, | |
1191 | // Straight binary format. | |
1192 | OBJECT_FORMAT_BINARY | |
1193 | }; | |
fe9a4c12 | 1194 | |
e6a307ba ILT |
1195 | // Convert a string to an Object_format. Gives an error if the |
1196 | // string is not recognized. | |
1197 | static Object_format | |
1198 | string_to_object_format(const char* arg); | |
1199 | ||
ee1fe73e ILT |
1200 | // Note: these functions are not very fast. |
1201 | Object_format format_enum() const; | |
1202 | Object_format oformat_enum() const; | |
fe9a4c12 | 1203 | |
fd9d194f ILT |
1204 | // Return whether FILENAME is in a system directory. |
1205 | bool | |
1206 | is_in_system_directory(const std::string& name) const; | |
1207 | ||
8c604651 CS |
1208 | // RETURN whether SYMBOL_NAME should be kept, according to symbols_to_retain_. |
1209 | bool | |
1210 | should_retain_symbol(const char* symbol_name) const | |
1211 | { | |
1212 | if (symbols_to_retain_.empty()) // means flag wasn't specified | |
1213 | return true; | |
1214 | return symbols_to_retain_.find(symbol_name) != symbols_to_retain_.end(); | |
1215 | } | |
1216 | ||
ee1fe73e ILT |
1217 | // These are the best way to get access to the execstack state, |
1218 | // not execstack() and noexecstack() which are hard to use properly. | |
35cdfc9a ILT |
1219 | bool |
1220 | is_execstack_set() const | |
ee1fe73e | 1221 | { return this->execstack_status_ != EXECSTACK_FROM_INPUT; } |
35cdfc9a ILT |
1222 | |
1223 | bool | |
1224 | is_stack_executable() const | |
ee1fe73e | 1225 | { return this->execstack_status_ == EXECSTACK_YES; } |
c7912668 | 1226 | |
032ce4e9 ST |
1227 | bool |
1228 | icf_enabled() const | |
1229 | { return this->icf_status_ != ICF_NONE; } | |
1230 | ||
1231 | bool | |
1232 | icf_safe_folding() const | |
1233 | { return this->icf_status_ == ICF_SAFE; } | |
1234 | ||
086a1841 ILT |
1235 | // The --demangle option takes an optional string, and there is also |
1236 | // a --no-demangle option. This is the best way to decide whether | |
1237 | // to demangle or not. | |
1238 | bool | |
1239 | do_demangle() const | |
1240 | { return this->do_demangle_; } | |
1241 | ||
89fc3421 CC |
1242 | // Returns TRUE if any plugin libraries have been loaded. |
1243 | bool | |
1244 | has_plugins() const | |
1245 | { return this->plugins_ != NULL; } | |
1246 | ||
1247 | // Return a pointer to the plugin manager. | |
1248 | Plugin_manager* | |
1249 | plugins() const | |
1250 | { return this->plugins_; } | |
1251 | ||
c82fbeee CS |
1252 | // True iff SYMBOL was found in the file specified by dynamic-list. |
1253 | bool | |
1254 | in_dynamic_list(const char* symbol) const | |
1255 | { return this->dynamic_list_.version_script_info()->symbol_is_local(symbol); } | |
1256 | ||
6affe781 ILT |
1257 | // Finalize the dynamic list. |
1258 | void | |
1259 | finalize_dynamic_list() | |
1260 | { this->dynamic_list_.version_script_info()->finalize(); } | |
1261 | ||
266d0a74 ILT |
1262 | // The disposition given by the --incremental-changed, |
1263 | // --incremental-unchanged or --incremental-unknown option. The | |
1264 | // value may change as we proceed parsing the command line flags. | |
1265 | Incremental_disposition | |
1266 | incremental_disposition() const | |
1267 | { return this->incremental_disposition_; } | |
1268 | ||
65514900 CC |
1269 | // Return true if S is the name of a library excluded from automatic |
1270 | // symbol export. | |
1271 | bool | |
ca09d69a | 1272 | check_excluded_libs(const std::string &s) const; |
65514900 | 1273 | |
a192ba05 ILT |
1274 | // If an explicit start address was given for section SECNAME with |
1275 | // the --section-start option, return true and set *PADDR to the | |
1276 | // address. Otherwise return false. | |
1277 | bool | |
1278 | section_start(const char* secname, uint64_t* paddr) const; | |
1279 | ||
9b2fd367 DK |
1280 | enum Fix_v4bx |
1281 | { | |
1282 | // Leave original instruction. | |
1283 | FIX_V4BX_NONE, | |
1284 | // Replace instruction. | |
1285 | FIX_V4BX_REPLACE, | |
1286 | // Generate an interworking veneer. | |
1287 | FIX_V4BX_INTERWORKING | |
1288 | }; | |
1289 | ||
1290 | Fix_v4bx | |
1291 | fix_v4bx() const | |
1292 | { return (this->fix_v4bx_); } | |
1293 | ||
7296d933 DK |
1294 | enum Endianness |
1295 | { | |
1296 | ENDIANNESS_NOT_SET, | |
1297 | ENDIANNESS_BIG, | |
1298 | ENDIANNESS_LITTLE | |
1299 | }; | |
1300 | ||
1301 | Endianness | |
1302 | endianness() const | |
1303 | { return this->endianness_; } | |
1304 | ||
bae7f79e | 1305 | private: |
dbe717ef ILT |
1306 | // Don't copy this structure. |
1307 | General_options(const General_options&); | |
1308 | General_options& operator=(const General_options&); | |
1309 | ||
35cdfc9a ILT |
1310 | // Whether to mark the stack as executable. |
1311 | enum Execstack | |
1312 | { | |
1313 | // Not set on command line. | |
1314 | EXECSTACK_FROM_INPUT, | |
ee1fe73e | 1315 | // Mark the stack as executable (-z execstack). |
35cdfc9a | 1316 | EXECSTACK_YES, |
ee1fe73e | 1317 | // Mark the stack as not executable (-z noexecstack). |
35cdfc9a ILT |
1318 | EXECSTACK_NO |
1319 | }; | |
1320 | ||
032ce4e9 ST |
1321 | enum Icf_status |
1322 | { | |
1323 | // Do not fold any functions (Default or --icf=none). | |
1324 | ICF_NONE, | |
1325 | // All functions are candidates for folding. (--icf=all). | |
1326 | ICF_ALL, | |
1327 | // Only ctors and dtors are candidates for folding. (--icf=safe). | |
1328 | ICF_SAFE | |
1329 | }; | |
1330 | ||
1331 | void | |
1332 | set_icf_status(Icf_status value) | |
1333 | { this->icf_status_ = value; } | |
1334 | ||
92e059d8 | 1335 | void |
ee1fe73e | 1336 | set_execstack_status(Execstack value) |
086a1841 ILT |
1337 | { this->execstack_status_ = value; } |
1338 | ||
1339 | void | |
1340 | set_do_demangle(bool value) | |
1341 | { this->do_demangle_ = value; } | |
92e059d8 | 1342 | |
bae7f79e | 1343 | void |
45aa233b | 1344 | set_static(bool value) |
ee1fe73e | 1345 | { static_ = value; } |
652ec9bd | 1346 | |
ee1fe73e | 1347 | // These are called by finalize() to set up the search-path correctly. |
35cdfc9a | 1348 | void |
ee1fe73e ILT |
1349 | add_to_library_path_with_sysroot(const char* arg) |
1350 | { this->add_search_directory_to_library_path(Search_directory(arg, true)); } | |
c7912668 | 1351 | |
ad2d6943 ILT |
1352 | // Apply any sysroot to the directory lists. |
1353 | void | |
1354 | add_sysroot(); | |
086a1841 | 1355 | |
89fc3421 CC |
1356 | // Add a plugin and its arguments to the list of plugins. |
1357 | void | |
ca09d69a | 1358 | add_plugin(const char* filename); |
4674ecfc CC |
1359 | |
1360 | // Add a plugin option. | |
1361 | void | |
1362 | add_plugin_option(const char* opt); | |
89fc3421 | 1363 | |
459c9f1c ILT |
1364 | // Whether we printed version information. |
1365 | bool printed_version_; | |
086a1841 ILT |
1366 | // Whether to mark the stack as executable. |
1367 | Execstack execstack_status_; | |
032ce4e9 ST |
1368 | // Whether to do code folding. |
1369 | Icf_status icf_status_; | |
086a1841 ILT |
1370 | // Whether to do a static link. |
1371 | bool static_; | |
1372 | // Whether to do demangling. | |
1373 | bool do_demangle_; | |
89fc3421 CC |
1374 | // List of plugin libraries. |
1375 | Plugin_manager* plugins_; | |
c82fbeee CS |
1376 | // The parsed output of --dynamic-list files. For convenience in |
1377 | // script.cc, we store this as a Script_options object, even though | |
1378 | // we only use a single Version_tree from it. | |
1379 | Script_options dynamic_list_; | |
266d0a74 ILT |
1380 | // The disposition given by the --incremental-changed, |
1381 | // --incremental-unchanged or --incremental-unknown option. The | |
1382 | // value may change as we proceed parsing the command line flags. | |
1383 | Incremental_disposition incremental_disposition_; | |
459c9f1c | 1384 | // Whether we have seen one of the options that require incremental |
266d0a74 ILT |
1385 | // build (--incremental-changed, --incremental-unchanged or |
1386 | // --incremental-unknown) | |
1387 | bool implicit_incremental_; | |
8c604651 | 1388 | // Libraries excluded from automatic export, via --exclude-libs. |
65514900 | 1389 | Unordered_set<std::string> excluded_libs_; |
8c604651 CS |
1390 | // List of symbol-names to keep, via -retain-symbol-info. |
1391 | Unordered_set<std::string> symbols_to_retain_; | |
a192ba05 ILT |
1392 | // Map from section name to address from --section-start. |
1393 | std::map<std::string, uint64_t> section_starts_; | |
9b2fd367 DK |
1394 | // Whether to process armv4 bx instruction relocation. |
1395 | Fix_v4bx fix_v4bx_; | |
7296d933 DK |
1396 | // Endianness. |
1397 | Endianness endianness_; | |
bae7f79e ILT |
1398 | }; |
1399 | ||
ee1fe73e ILT |
1400 | // The position-dependent options. We use this to store the state of |
1401 | // the commandline at a particular point in parsing for later | |
1402 | // reference. For instance, if we see "ld --whole-archive foo.a | |
1403 | // --no-whole-archive," we want to store the whole-archive option with | |
1404 | // foo.a, so when the time comes to parse foo.a we know we should do | |
1405 | // it in whole-archive mode. We could store all of General_options, | |
1406 | // but that's big, so we just pick the subset of flags that actually | |
1407 | // change in a position-dependent way. | |
1408 | ||
1409 | #define DEFINE_posdep(varname__, type__) \ | |
1410 | public: \ | |
1411 | type__ \ | |
1412 | varname__() const \ | |
1413 | { return this->varname__##_; } \ | |
1414 | \ | |
1415 | void \ | |
1416 | set_##varname__(type__ value) \ | |
1417 | { this->varname__##_ = value; } \ | |
1418 | private: \ | |
1419 | type__ varname__##_ | |
bae7f79e ILT |
1420 | |
1421 | class Position_dependent_options | |
1422 | { | |
1423 | public: | |
ee1fe73e ILT |
1424 | Position_dependent_options(const General_options& options |
1425 | = Position_dependent_options::default_options_) | |
1426 | { copy_from_options(options); } | |
bae7f79e | 1427 | |
ee1fe73e ILT |
1428 | void copy_from_options(const General_options& options) |
1429 | { | |
1430 | this->set_as_needed(options.as_needed()); | |
1431 | this->set_Bdynamic(options.Bdynamic()); | |
1432 | this->set_format_enum(options.format_enum()); | |
1433 | this->set_whole_archive(options.whole_archive()); | |
266d0a74 | 1434 | this->set_incremental_disposition(options.incremental_disposition()); |
ee1fe73e | 1435 | } |
bc644c6c | 1436 | |
ee1fe73e ILT |
1437 | DEFINE_posdep(as_needed, bool); |
1438 | DEFINE_posdep(Bdynamic, bool); | |
1439 | DEFINE_posdep(format_enum, General_options::Object_format); | |
1440 | DEFINE_posdep(whole_archive, bool); | |
266d0a74 | 1441 | DEFINE_posdep(incremental_disposition, Incremental_disposition); |
7cc619c3 | 1442 | |
dbe717ef | 1443 | private: |
ee1fe73e ILT |
1444 | // This is a General_options with everything set to its default |
1445 | // value. A Position_dependent_options created with no argument | |
1446 | // will take its values from here. | |
1447 | static General_options default_options_; | |
bae7f79e ILT |
1448 | }; |
1449 | ||
ee1fe73e | 1450 | |
bae7f79e ILT |
1451 | // A single file or library argument from the command line. |
1452 | ||
ead1e424 | 1453 | class Input_file_argument |
bae7f79e ILT |
1454 | { |
1455 | public: | |
ae3b5189 CD |
1456 | enum Input_file_type |
1457 | { | |
1458 | // A regular file, name used as-is, not searched. | |
1459 | INPUT_FILE_TYPE_FILE, | |
1460 | // A library name. When used, "lib" will be prepended and ".so" or | |
1461 | // ".a" appended to make a filename, and that filename will be searched | |
1462 | // for using the -L paths. | |
1463 | INPUT_FILE_TYPE_LIBRARY, | |
1464 | // A regular file, name used as-is, but searched using the -L paths. | |
1465 | INPUT_FILE_TYPE_SEARCHED_FILE | |
1466 | }; | |
1467 | ||
51dee2fe | 1468 | // name: file name or library name |
ae3b5189 | 1469 | // type: the type of this input file. |
51dee2fe ILT |
1470 | // extra_search_path: an extra directory to look for the file, prior |
1471 | // to checking the normal library search path. If this is "", | |
1472 | // then no extra directory is added. | |
88dd47ac | 1473 | // just_symbols: whether this file only defines symbols. |
51dee2fe | 1474 | // options: The position dependent options at this point in the |
ad2d6943 | 1475 | // command line, such as --whole-archive. |
ead1e424 | 1476 | Input_file_argument() |
ae3b5189 CD |
1477 | : name_(), type_(INPUT_FILE_TYPE_FILE), extra_search_path_(""), |
1478 | just_symbols_(false), options_() | |
ead1e424 ILT |
1479 | { } |
1480 | ||
2ea97941 ILT |
1481 | Input_file_argument(const char* name, Input_file_type type, |
1482 | const char* extra_search_path, | |
1483 | bool just_symbols, | |
1484 | const Position_dependent_options& options) | |
1485 | : name_(name), type_(type), extra_search_path_(extra_search_path), | |
1486 | just_symbols_(just_symbols), options_(options) | |
ee1fe73e ILT |
1487 | { } |
1488 | ||
1489 | // You can also pass in a General_options instance instead of a | |
1490 | // Position_dependent_options. In that case, we extract the | |
1491 | // position-independent vars from the General_options and only store | |
1492 | // those. | |
2ea97941 ILT |
1493 | Input_file_argument(const char* name, Input_file_type type, |
1494 | const char* extra_search_path, | |
1495 | bool just_symbols, | |
1496 | const General_options& options) | |
1497 | : name_(name), type_(type), extra_search_path_(extra_search_path), | |
1498 | just_symbols_(just_symbols), options_(options) | |
bae7f79e ILT |
1499 | { } |
1500 | ||
1501 | const char* | |
1502 | name() const | |
dbe717ef | 1503 | { return this->name_.c_str(); } |
bae7f79e ILT |
1504 | |
1505 | const Position_dependent_options& | |
1506 | options() const | |
1507 | { return this->options_; } | |
1508 | ||
1509 | bool | |
1510 | is_lib() const | |
ae3b5189 CD |
1511 | { return type_ == INPUT_FILE_TYPE_LIBRARY; } |
1512 | ||
1513 | bool | |
1514 | is_searched_file() const | |
1515 | { return type_ == INPUT_FILE_TYPE_SEARCHED_FILE; } | |
bae7f79e | 1516 | |
51dee2fe ILT |
1517 | const char* |
1518 | extra_search_path() const | |
1519 | { | |
1520 | return (this->extra_search_path_.empty() | |
1521 | ? NULL | |
ee1fe73e | 1522 | : this->extra_search_path_.c_str()); |
51dee2fe ILT |
1523 | } |
1524 | ||
88dd47ac ILT |
1525 | // Return whether we should only read symbols from this file. |
1526 | bool | |
1527 | just_symbols() const | |
1528 | { return this->just_symbols_; } | |
1529 | ||
51dee2fe ILT |
1530 | // Return whether this file may require a search using the -L |
1531 | // options. | |
1532 | bool | |
1533 | may_need_search() const | |
ae3b5189 CD |
1534 | { |
1535 | return (this->is_lib() | |
1536 | || this->is_searched_file() | |
1537 | || !this->extra_search_path_.empty()); | |
1538 | } | |
51dee2fe | 1539 | |
bae7f79e | 1540 | private: |
dbe717ef ILT |
1541 | // We use std::string, not const char*, here for convenience when |
1542 | // using script files, so that we do not have to preserve the string | |
1543 | // in that case. | |
1544 | std::string name_; | |
ae3b5189 | 1545 | Input_file_type type_; |
51dee2fe | 1546 | std::string extra_search_path_; |
88dd47ac | 1547 | bool just_symbols_; |
bae7f79e ILT |
1548 | Position_dependent_options options_; |
1549 | }; | |
1550 | ||
ead1e424 ILT |
1551 | // A file or library, or a group, from the command line. |
1552 | ||
1553 | class Input_argument | |
1554 | { | |
1555 | public: | |
1556 | // Create a file or library argument. | |
2ea97941 | 1557 | explicit Input_argument(Input_file_argument file) |
b0193076 | 1558 | : is_file_(true), file_(file), group_(NULL), lib_(NULL) |
ead1e424 ILT |
1559 | { } |
1560 | ||
1561 | // Create a group argument. | |
2ea97941 | 1562 | explicit Input_argument(Input_file_group* group) |
b0193076 RÁE |
1563 | : is_file_(false), group_(group), lib_(NULL) |
1564 | { } | |
1565 | ||
1566 | // Create a lib argument. | |
1567 | explicit Input_argument(Input_file_lib* lib) | |
1568 | : is_file_(false), group_(NULL), lib_(lib) | |
ead1e424 ILT |
1569 | { } |
1570 | ||
1571 | // Return whether this is a file. | |
1572 | bool | |
1573 | is_file() const | |
1574 | { return this->is_file_; } | |
1575 | ||
1576 | // Return whether this is a group. | |
1577 | bool | |
1578 | is_group() const | |
b0193076 RÁE |
1579 | { return !this->is_file_ && this->lib_ == NULL; } |
1580 | ||
1581 | // Return whether this is a lib. | |
1582 | bool | |
1583 | is_lib() const | |
1584 | { return this->lib_ != NULL; } | |
ead1e424 ILT |
1585 | |
1586 | // Return the information about the file. | |
1587 | const Input_file_argument& | |
1588 | file() const | |
1589 | { | |
a3ad94ed | 1590 | gold_assert(this->is_file_); |
ead1e424 ILT |
1591 | return this->file_; |
1592 | } | |
1593 | ||
1594 | // Return the information about the group. | |
1595 | const Input_file_group* | |
1596 | group() const | |
1597 | { | |
a3ad94ed | 1598 | gold_assert(!this->is_file_); |
ead1e424 ILT |
1599 | return this->group_; |
1600 | } | |
1601 | ||
1602 | Input_file_group* | |
1603 | group() | |
1604 | { | |
a3ad94ed | 1605 | gold_assert(!this->is_file_); |
ead1e424 ILT |
1606 | return this->group_; |
1607 | } | |
1608 | ||
b0193076 RÁE |
1609 | // Return the information about the lib. |
1610 | const Input_file_lib* | |
1611 | lib() const | |
1612 | { | |
1613 | gold_assert(!this->is_file_); | |
1614 | gold_assert(this->lib_); | |
1615 | return this->lib_; | |
1616 | } | |
1617 | ||
1618 | Input_file_lib* | |
1619 | lib() | |
1620 | { | |
1621 | gold_assert(!this->is_file_); | |
1622 | gold_assert(this->lib_); | |
1623 | return this->lib_; | |
1624 | } | |
1625 | ||
ead1e424 ILT |
1626 | private: |
1627 | bool is_file_; | |
1628 | Input_file_argument file_; | |
1629 | Input_file_group* group_; | |
b0193076 | 1630 | Input_file_lib* lib_; |
ead1e424 ILT |
1631 | }; |
1632 | ||
072fe7ce ILT |
1633 | typedef std::vector<Input_argument> Input_argument_list; |
1634 | ||
ead1e424 ILT |
1635 | // A group from the command line. This is a set of arguments within |
1636 | // --start-group ... --end-group. | |
1637 | ||
1638 | class Input_file_group | |
92e059d8 | 1639 | { |
ead1e424 | 1640 | public: |
072fe7ce | 1641 | typedef Input_argument_list::const_iterator const_iterator; |
ead1e424 ILT |
1642 | |
1643 | Input_file_group() | |
1644 | : files_() | |
1645 | { } | |
1646 | ||
1647 | // Add a file to the end of the group. | |
1648 | void | |
1649 | add_file(const Input_file_argument& arg) | |
1650 | { this->files_.push_back(Input_argument(arg)); } | |
1651 | ||
1652 | // Iterators to iterate over the group contents. | |
1653 | ||
1654 | const_iterator | |
1655 | begin() const | |
1656 | { return this->files_.begin(); } | |
1657 | ||
1658 | const_iterator | |
1659 | end() const | |
1660 | { return this->files_.end(); } | |
1661 | ||
1662 | private: | |
072fe7ce | 1663 | Input_argument_list files_; |
92e059d8 ILT |
1664 | }; |
1665 | ||
b0193076 RÁE |
1666 | // A lib from the command line. This is a set of arguments within |
1667 | // --start-lib ... --end-lib. | |
1668 | ||
1669 | class Input_file_lib | |
1670 | { | |
1671 | public: | |
1672 | typedef Input_argument_list::const_iterator const_iterator; | |
1673 | ||
1674 | Input_file_lib(const Position_dependent_options& options) | |
1675 | : files_(), options_(options) | |
1676 | { } | |
1677 | ||
1678 | // Add a file to the end of the lib. | |
1679 | void | |
1680 | add_file(const Input_file_argument& arg) | |
1681 | { this->files_.push_back(Input_argument(arg)); } | |
1682 | ||
1683 | const Position_dependent_options& | |
1684 | options() const | |
1685 | { return this->options_; } | |
1686 | ||
1687 | // Iterators to iterate over the lib contents. | |
1688 | ||
1689 | const_iterator | |
1690 | begin() const | |
1691 | { return this->files_.begin(); } | |
1692 | ||
1693 | const_iterator | |
1694 | end() const | |
1695 | { return this->files_.end(); } | |
1696 | ||
1697 | size_t | |
1698 | size() const | |
1699 | { return this->files_.size(); } | |
1700 | ||
1701 | private: | |
1702 | Input_argument_list files_; | |
1703 | Position_dependent_options options_; | |
1704 | }; | |
1705 | ||
dbe717ef ILT |
1706 | // A list of files from the command line or a script. |
1707 | ||
1708 | class Input_arguments | |
1709 | { | |
1710 | public: | |
dbe717ef ILT |
1711 | typedef Input_argument_list::const_iterator const_iterator; |
1712 | ||
1713 | Input_arguments() | |
b0193076 | 1714 | : input_argument_list_(), in_group_(false), in_lib_(false) |
dbe717ef ILT |
1715 | { } |
1716 | ||
1717 | // Add a file. | |
1718 | void | |
1719 | add_file(const Input_file_argument& arg); | |
1720 | ||
1721 | // Start a group (the --start-group option). | |
1722 | void | |
1723 | start_group(); | |
1724 | ||
1725 | // End a group (the --end-group option). | |
1726 | void | |
1727 | end_group(); | |
1728 | ||
b0193076 RÁE |
1729 | // Start a lib (the --start-lib option). |
1730 | void | |
1731 | start_lib(const Position_dependent_options&); | |
1732 | ||
1733 | // End a lib (the --end-lib option). | |
1734 | void | |
1735 | end_lib(); | |
1736 | ||
dbe717ef ILT |
1737 | // Return whether we are currently in a group. |
1738 | bool | |
1739 | in_group() const | |
1740 | { return this->in_group_; } | |
1741 | ||
b0193076 RÁE |
1742 | // Return whether we are currently in a lib. |
1743 | bool | |
1744 | in_lib() const | |
1745 | { return this->in_lib_; } | |
1746 | ||
fe9a4c12 ILT |
1747 | // The number of entries in the list. |
1748 | int | |
1749 | size() const | |
1750 | { return this->input_argument_list_.size(); } | |
1751 | ||
dbe717ef ILT |
1752 | // Iterators to iterate over the list of input files. |
1753 | ||
1754 | const_iterator | |
1755 | begin() const | |
1756 | { return this->input_argument_list_.begin(); } | |
1757 | ||
1758 | const_iterator | |
1759 | end() const | |
1760 | { return this->input_argument_list_.end(); } | |
1761 | ||
1762 | // Return whether the list is empty. | |
1763 | bool | |
1764 | empty() const | |
1765 | { return this->input_argument_list_.empty(); } | |
1766 | ||
1767 | private: | |
1768 | Input_argument_list input_argument_list_; | |
1769 | bool in_group_; | |
b0193076 | 1770 | bool in_lib_; |
dbe717ef ILT |
1771 | }; |
1772 | ||
ee1fe73e ILT |
1773 | |
1774 | // All the information read from the command line. These are held in | |
1775 | // three separate structs: one to hold the options (--foo), one to | |
1776 | // hold the filenames listed on the commandline, and one to hold | |
1777 | // linker script information. This third is not a subset of the other | |
1778 | // two because linker scripts can be specified either as options (via | |
1779 | // -T) or as a file. | |
bae7f79e ILT |
1780 | |
1781 | class Command_line | |
1782 | { | |
1783 | public: | |
ead1e424 ILT |
1784 | typedef Input_arguments::const_iterator const_iterator; |
1785 | ||
a5dc0706 | 1786 | Command_line(); |
bae7f79e ILT |
1787 | |
1788 | // Process the command line options. This will exit with an | |
1789 | // appropriate error message if an unrecognized option is seen. | |
1790 | void | |
ee1fe73e | 1791 | process(int argc, const char** argv); |
bae7f79e | 1792 | |
a0451b38 | 1793 | // Process one command-line option. This takes the index of argv to |
ee1fe73e ILT |
1794 | // process, and returns the index for the next option. no_more_options |
1795 | // is set to true if argv[i] is "--". | |
61ba1cf9 | 1796 | int |
ee1fe73e ILT |
1797 | process_one_option(int argc, const char** argv, int i, |
1798 | bool* no_more_options); | |
3c2fafa5 | 1799 | |
61ba1cf9 | 1800 | // Get the general options. |
bae7f79e ILT |
1801 | const General_options& |
1802 | options() const | |
1803 | { return this->options_; } | |
1804 | ||
3c2fafa5 ILT |
1805 | // Get the position dependent options. |
1806 | const Position_dependent_options& | |
1807 | position_dependent_options() const | |
1808 | { return this->position_options_; } | |
1809 | ||
a5dc0706 ILT |
1810 | // Get the linker-script options. |
1811 | Script_options& | |
e5756efb | 1812 | script_options() |
a5dc0706 | 1813 | { return this->script_options_; } |
e5756efb | 1814 | |
6affe781 | 1815 | // Finalize the version-script options and return them. |
a5dc0706 | 1816 | const Version_script_info& |
6affe781 | 1817 | version_script(); |
e5756efb | 1818 | |
ee1fe73e ILT |
1819 | // Get the input files. |
1820 | Input_arguments& | |
1821 | inputs() | |
1822 | { return this->inputs_; } | |
1823 | ||
fe9a4c12 ILT |
1824 | // The number of input files. |
1825 | int | |
1826 | number_of_input_files() const | |
1827 | { return this->inputs_.size(); } | |
1828 | ||
ead1e424 ILT |
1829 | // Iterators to iterate over the list of input files. |
1830 | ||
1831 | const_iterator | |
1832 | begin() const | |
1833 | { return this->inputs_.begin(); } | |
1834 | ||
1835 | const_iterator | |
1836 | end() const | |
1837 | { return this->inputs_.end(); } | |
bae7f79e ILT |
1838 | |
1839 | private: | |
ead1e424 ILT |
1840 | Command_line(const Command_line&); |
1841 | Command_line& operator=(const Command_line&); | |
1842 | ||
293c1386 CC |
1843 | // This is a dummy class to provide a constructor that runs before |
1844 | // the constructor for the General_options. The Pre_options constructor | |
1845 | // is used as a hook to set the flag enabling the options to register | |
1846 | // themselves. | |
1847 | struct Pre_options { | |
1848 | Pre_options(); | |
1849 | }; | |
1850 | ||
1851 | // This must come before options_! | |
1852 | Pre_options pre_options_; | |
bae7f79e ILT |
1853 | General_options options_; |
1854 | Position_dependent_options position_options_; | |
a5dc0706 | 1855 | Script_options script_options_; |
ead1e424 | 1856 | Input_arguments inputs_; |
bae7f79e ILT |
1857 | }; |
1858 | ||
1859 | } // End namespace gold. | |
1860 | ||
1861 | #endif // !defined(GOLD_OPTIONS_H) |