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bae7f79e ILT |
1 | // options.h -- handle command line options for gold -*- C++ -*- |
2 | ||
e5756efb | 3 | // Copyright 2006, 2007, 2008 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> |
61ba1cf9 | 42 | #include <string> |
92e059d8 | 43 | #include <vector> |
bae7f79e | 44 | |
0daa6f62 | 45 | #include "elfcpp.h" |
3c2fafa5 ILT |
46 | #include "script.h" |
47 | ||
bae7f79e ILT |
48 | namespace gold |
49 | { | |
50 | ||
51 | class Command_line; | |
ee1fe73e ILT |
52 | class General_options; |
53 | class Search_directory; | |
ead1e424 | 54 | class Input_file_group; |
3c2fafa5 | 55 | class Position_dependent_options; |
0daa6f62 | 56 | class Target; |
bae7f79e | 57 | |
ee1fe73e ILT |
58 | // The nested namespace is to contain all the global variables and |
59 | // structs that need to be defined in the .h file, but do not need to | |
60 | // be used outside this class. | |
c7912668 ILT |
61 | namespace options |
62 | { | |
ee1fe73e | 63 | typedef std::vector<Search_directory> Dir_list; |
c5818ff1 | 64 | typedef Unordered_set<std::string> String_set; |
ee1fe73e ILT |
65 | |
66 | // These routines convert from a string option to various types. | |
67 | // Each gives a fatal error if it cannot parse the argument. | |
68 | ||
69 | extern void | |
70 | parse_bool(const char* option_name, const char* arg, bool* retval); | |
71 | ||
72 | extern void | |
73 | parse_uint(const char* option_name, const char* arg, int* retval); | |
74 | ||
75 | extern void | |
c18476e7 ILT |
76 | parse_uint64(const char* option_name, const char* arg, uint64_t* retval); |
77 | ||
78 | extern void | |
79 | parse_double(const char* option_name, const char* arg, double* retval); | |
ee1fe73e ILT |
80 | |
81 | extern void | |
82 | parse_string(const char* option_name, const char* arg, const char** retval); | |
83 | ||
086a1841 ILT |
84 | extern void |
85 | parse_optional_string(const char* option_name, const char* arg, | |
86 | const char** retval); | |
87 | ||
ee1fe73e ILT |
88 | extern void |
89 | parse_dirlist(const char* option_name, const char* arg, Dir_list* retval); | |
90 | ||
c5818ff1 CC |
91 | extern void |
92 | parse_set(const char* option_name, const char* arg, String_set* retval); | |
93 | ||
ee1fe73e ILT |
94 | extern void |
95 | parse_choices(const char* option_name, const char* arg, const char** retval, | |
96 | const char* choices[], int num_choices); | |
97 | ||
98 | struct Struct_var; | |
99 | ||
100 | // Most options have both a shortname (one letter) and a longname. | |
101 | // This enum controls how many dashes are expected for longname access | |
102 | // -- shortnames always use one dash. Most longnames will accept | |
103 | // either one dash or two; the only difference between ONE_DASH and | |
104 | // TWO_DASHES is how we print the option in --help. However, some | |
105 | // longnames require two dashes, and some require only one. The | |
106 | // special value DASH_Z means that the option is preceded by "-z". | |
107 | enum Dashes | |
108 | { | |
109 | ONE_DASH, TWO_DASHES, EXACTLY_ONE_DASH, EXACTLY_TWO_DASHES, DASH_Z | |
110 | }; | |
111 | ||
112 | // LONGNAME is the long-name of the option with dashes converted to | |
113 | // underscores, or else the short-name if the option has no long-name. | |
114 | // It is never the empty string. | |
115 | // DASHES is an instance of the Dashes enum: ONE_DASH, TWO_DASHES, etc. | |
116 | // SHORTNAME is the short-name of the option, as a char, or '\0' if the | |
117 | // option has no short-name. If the option has no long-name, you | |
118 | // should specify the short-name in *both* VARNAME and here. | |
119 | // DEFAULT_VALUE is the value of the option if not specified on the | |
120 | // commandline, as a string. | |
121 | // HELPSTRING is the descriptive text used with the option via --help | |
122 | // HELPARG is how you define the argument to the option. | |
123 | // --help output is "-shortname HELPARG, --longname HELPARG: HELPSTRING" | |
124 | // HELPARG should be NULL iff the option is a bool and takes no arg. | |
086a1841 ILT |
125 | // OPTIONAL_ARG is true if this option takes an optional argument. An |
126 | // optional argument must be specifid as --OPTION=VALUE, not | |
127 | // --OPTION VALUE. | |
ee1fe73e ILT |
128 | // READER provides parse_to_value, which is a function that will convert |
129 | // a char* argument into the proper type and store it in some variable. | |
130 | // A One_option struct initializes itself with the global list of options | |
131 | // at constructor time, so be careful making one of these. | |
132 | struct One_option | |
133 | { | |
134 | std::string longname; | |
135 | Dashes dashes; | |
136 | char shortname; | |
137 | const char* default_value; | |
138 | const char* helpstring; | |
139 | const char* helparg; | |
086a1841 | 140 | bool optional_arg; |
ee1fe73e ILT |
141 | Struct_var* reader; |
142 | ||
143 | One_option(const char* ln, Dashes d, char sn, const char* dv, | |
086a1841 | 144 | const char* hs, const char* ha, bool oa, Struct_var* r) |
ee1fe73e | 145 | : longname(ln), dashes(d), shortname(sn), default_value(dv ? dv : ""), |
086a1841 | 146 | helpstring(hs), helparg(ha), optional_arg(oa), reader(r) |
ee1fe73e ILT |
147 | { |
148 | // In longname, we convert all underscores to dashes, since GNU | |
149 | // style uses dashes in option names. longname is likely to have | |
150 | // underscores in it because it's also used to declare a C++ | |
151 | // function. | |
152 | const char* pos = strchr(this->longname.c_str(), '_'); | |
153 | for (; pos; pos = strchr(pos, '_')) | |
154 | this->longname[pos - this->longname.c_str()] = '-'; | |
155 | ||
156 | // We only register ourselves if our helpstring is not NULL. This | |
157 | // is to support the "no-VAR" boolean variables, which we | |
158 | // conditionally turn on by defining "no-VAR" help text. | |
159 | if (this->helpstring) | |
160 | this->register_option(); | |
161 | } | |
162 | ||
163 | // This option takes an argument iff helparg is not NULL. | |
164 | bool | |
165 | takes_argument() const | |
166 | { return this->helparg != NULL; } | |
167 | ||
086a1841 ILT |
168 | // Whether the argument is optional. |
169 | bool | |
170 | takes_optional_argument() const | |
171 | { return this->optional_arg; } | |
172 | ||
ee1fe73e ILT |
173 | // Register this option with the global list of options. |
174 | void | |
175 | register_option(); | |
176 | ||
177 | // Print this option to stdout (used with --help). | |
178 | void | |
179 | print() const; | |
180 | }; | |
181 | ||
182 | // All options have a Struct_##varname that inherits from this and | |
183 | // actually implements parse_to_value for that option. | |
184 | struct Struct_var | |
185 | { | |
186 | // OPTION: the name of the option as specified on the commandline, | |
187 | // including leading dashes, and any text following the option: | |
188 | // "-O", "--defsym=mysym=0x1000", etc. | |
189 | // ARG: the arg associated with this option, or NULL if the option | |
190 | // takes no argument: "2", "mysym=0x1000", etc. | |
191 | // CMDLINE: the global Command_line object. Used by DEFINE_special. | |
192 | // OPTIONS: the global General_options object. Used by DEFINE_special. | |
193 | virtual void | |
194 | parse_to_value(const char* option, const char* arg, | |
195 | Command_line* cmdline, General_options* options) = 0; | |
196 | virtual | |
197 | ~Struct_var() // To make gcc happy. | |
198 | { } | |
199 | }; | |
bae7f79e | 200 | |
ee1fe73e ILT |
201 | // This is for "special" options that aren't of any predefined type. |
202 | struct Struct_special : public Struct_var | |
203 | { | |
204 | // If you change this, change the parse-fn in DEFINE_special as well. | |
205 | typedef void (General_options::*Parse_function)(const char*, const char*, | |
206 | Command_line*); | |
207 | Struct_special(const char* varname, Dashes dashes, char shortname, | |
208 | Parse_function parse_function, | |
209 | const char* helpstring, const char* helparg) | |
086a1841 | 210 | : option(varname, dashes, shortname, "", helpstring, helparg, false, this), |
ee1fe73e ILT |
211 | parse(parse_function) |
212 | { } | |
213 | ||
214 | void parse_to_value(const char* option, const char* arg, | |
215 | Command_line* cmdline, General_options* options) | |
216 | { (options->*(this->parse))(option, arg, cmdline); } | |
217 | ||
218 | One_option option; | |
219 | Parse_function parse; | |
220 | }; | |
221 | ||
222 | } // End namespace options. | |
223 | ||
224 | ||
225 | // These are helper macros use by DEFINE_uint64/etc below. | |
226 | // This macro is used inside the General_options_ class, so defines | |
227 | // var() and set_var() as General_options methods. Arguments as are | |
228 | // for the constructor for One_option. param_type__ is the same as | |
229 | // type__ for built-in types, and "const type__ &" otherwise. | |
230 | #define DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
231 | default_value_as_string__, helpstring__, helparg__, \ | |
086a1841 | 232 | optional_arg__, type__, param_type__, parse_fn__) \ |
ee1fe73e ILT |
233 | public: \ |
234 | param_type__ \ | |
235 | varname__() const \ | |
236 | { return this->varname__##_.value; } \ | |
237 | \ | |
238 | bool \ | |
239 | user_set_##varname__() const \ | |
240 | { return this->varname__##_.user_set_via_option; } \ | |
241 | \ | |
2b706932 ILT |
242 | void \ |
243 | set_user_set_##varname__() \ | |
244 | { this->varname__##_.user_set_via_option = true; } \ | |
245 | \ | |
ee1fe73e ILT |
246 | private: \ |
247 | struct Struct_##varname__ : public options::Struct_var \ | |
248 | { \ | |
249 | Struct_##varname__() \ | |
250 | : option(#varname__, dashes__, shortname__, default_value_as_string__, \ | |
086a1841 | 251 | helpstring__, helparg__, optional_arg__, this), \ |
ee1fe73e ILT |
252 | user_set_via_option(false), value(default_value__) \ |
253 | { } \ | |
254 | \ | |
255 | void \ | |
256 | parse_to_value(const char* option_name, const char* arg, \ | |
257 | Command_line*, General_options*) \ | |
258 | { \ | |
259 | parse_fn__(option_name, arg, &this->value); \ | |
260 | this->user_set_via_option = true; \ | |
261 | } \ | |
262 | \ | |
263 | options::One_option option; \ | |
264 | bool user_set_via_option; \ | |
265 | type__ value; \ | |
266 | }; \ | |
267 | Struct_##varname__ varname__##_; \ | |
268 | void \ | |
269 | set_##varname__(param_type__ value) \ | |
270 | { this->varname__##_.value = value; } | |
271 | ||
272 | // These macros allow for easy addition of a new commandline option. | |
273 | ||
274 | // If no_helpstring__ is not NULL, then in addition to creating | |
d98bc257 ILT |
275 | // VARNAME, we also create an option called no-VARNAME (or, for a -z |
276 | // option, noVARNAME). | |
ee1fe73e ILT |
277 | #define DEFINE_bool(varname__, dashes__, shortname__, default_value__, \ |
278 | helpstring__, no_helpstring__) \ | |
279 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
280 | default_value__ ? "true" : "false", helpstring__, NULL, \ | |
086a1841 | 281 | false, bool, bool, options::parse_bool) \ |
ee1fe73e ILT |
282 | struct Struct_no_##varname__ : public options::Struct_var \ |
283 | { \ | |
d98bc257 ILT |
284 | Struct_no_##varname__() : option((dashes__ == options::DASH_Z \ |
285 | ? "no" #varname__ \ | |
286 | : "no-" #varname__), \ | |
287 | dashes__, '\0', \ | |
ee1fe73e | 288 | default_value__ ? "false" : "true", \ |
086a1841 | 289 | no_helpstring__, NULL, false, this) \ |
ee1fe73e ILT |
290 | { } \ |
291 | \ | |
292 | void \ | |
293 | parse_to_value(const char*, const char*, \ | |
294 | Command_line*, General_options* options) \ | |
295 | { options->set_##varname__(false); } \ | |
296 | \ | |
297 | options::One_option option; \ | |
298 | }; \ | |
299 | Struct_no_##varname__ no_##varname__##_initializer_ | |
300 | ||
7c414435 DM |
301 | #define DEFINE_enable(varname__, dashes__, shortname__, default_value__, \ |
302 | helpstring__, no_helpstring__) \ | |
303 | DEFINE_var(enable_##varname__, dashes__, shortname__, default_value__, \ | |
304 | default_value__ ? "true" : "false", helpstring__, NULL, \ | |
305 | false, bool, bool, options::parse_bool) \ | |
306 | struct Struct_disable_##varname__ : public options::Struct_var \ | |
307 | { \ | |
308 | Struct_disable_##varname__() : option("disable-" #varname__, \ | |
309 | dashes__, '\0', \ | |
310 | default_value__ ? "false" : "true", \ | |
311 | no_helpstring__, NULL, false, this) \ | |
312 | { } \ | |
313 | \ | |
314 | void \ | |
315 | parse_to_value(const char*, const char*, \ | |
316 | Command_line*, General_options* options) \ | |
317 | { options->set_enable_##varname__(false); } \ | |
318 | \ | |
319 | options::One_option option; \ | |
320 | }; \ | |
321 | Struct_disable_##varname__ disable_##varname__##_initializer_ | |
322 | ||
ee1fe73e ILT |
323 | #define DEFINE_uint(varname__, dashes__, shortname__, default_value__, \ |
324 | helpstring__, helparg__) \ | |
325 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
086a1841 | 326 | #default_value__, helpstring__, helparg__, false, \ |
ee1fe73e ILT |
327 | int, int, options::parse_uint) |
328 | ||
329 | #define DEFINE_uint64(varname__, dashes__, shortname__, default_value__, \ | |
330 | helpstring__, helparg__) \ | |
331 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
086a1841 | 332 | #default_value__, helpstring__, helparg__, false, \ |
ee1fe73e ILT |
333 | uint64_t, uint64_t, options::parse_uint64) |
334 | ||
c18476e7 ILT |
335 | #define DEFINE_double(varname__, dashes__, shortname__, default_value__, \ |
336 | helpstring__, helparg__) \ | |
337 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
086a1841 | 338 | #default_value__, helpstring__, helparg__, false, \ |
c18476e7 ILT |
339 | double, double, options::parse_double) |
340 | ||
ee1fe73e ILT |
341 | #define DEFINE_string(varname__, dashes__, shortname__, default_value__, \ |
342 | helpstring__, helparg__) \ | |
343 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
086a1841 | 344 | default_value__, helpstring__, helparg__, false, \ |
ee1fe73e ILT |
345 | const char*, const char*, options::parse_string) |
346 | ||
347 | // This is like DEFINE_string, but we convert each occurrence to a | |
348 | // Search_directory and store it in a vector. Thus we also have the | |
349 | // add_to_VARNAME() method, to append to the vector. | |
350 | #define DEFINE_dirlist(varname__, dashes__, shortname__, \ | |
351 | helpstring__, helparg__) \ | |
352 | DEFINE_var(varname__, dashes__, shortname__, , \ | |
086a1841 | 353 | "", helpstring__, helparg__, false, options::Dir_list, \ |
ee1fe73e ILT |
354 | const options::Dir_list&, options::parse_dirlist) \ |
355 | void \ | |
356 | add_to_##varname__(const char* new_value) \ | |
357 | { options::parse_dirlist(NULL, new_value, &this->varname__##_.value); } \ | |
358 | void \ | |
359 | add_search_directory_to_##varname__(const Search_directory& dir) \ | |
360 | { this->varname__##_.value.push_back(dir); } | |
361 | ||
c5818ff1 CC |
362 | // This is like DEFINE_string, but we store a set of strings. |
363 | #define DEFINE_set(varname__, dashes__, shortname__, \ | |
364 | helpstring__, helparg__) \ | |
365 | DEFINE_var(varname__, dashes__, shortname__, , \ | |
366 | "", helpstring__, helparg__, false, options::String_set, \ | |
367 | const options::String_set&, options::parse_set) \ | |
368 | public: \ | |
369 | bool \ | |
370 | any_##varname__() const \ | |
371 | { return !this->varname__##_.value.empty(); } \ | |
f3e9c5c5 | 372 | \ |
c5818ff1 CC |
373 | bool \ |
374 | is_##varname__(const char* symbol) const \ | |
375 | { \ | |
376 | return (!this->varname__##_.value.empty() \ | |
377 | && (this->varname__##_.value.find(std::string(symbol)) \ | |
378 | != this->varname__##_.value.end())); \ | |
f3e9c5c5 ILT |
379 | } \ |
380 | \ | |
381 | options::String_set::const_iterator \ | |
382 | varname__##_begin() const \ | |
383 | { return this->varname__##_.value.begin(); } \ | |
384 | \ | |
385 | options::String_set::const_iterator \ | |
386 | varname__##_end() const \ | |
387 | { return this->varname__##_.value.end(); } | |
c5818ff1 | 388 | |
ee1fe73e ILT |
389 | // When you have a list of possible values (expressed as string) |
390 | // After helparg__ should come an initializer list, like | |
391 | // {"foo", "bar", "baz"} | |
392 | #define DEFINE_enum(varname__, dashes__, shortname__, default_value__, \ | |
393 | helpstring__, helparg__, ...) \ | |
394 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
086a1841 | 395 | default_value__, helpstring__, helparg__, false, \ |
ee1fe73e ILT |
396 | const char*, const char*, parse_choices_##varname__) \ |
397 | private: \ | |
398 | static void parse_choices_##varname__(const char* option_name, \ | |
399 | const char* arg, \ | |
400 | const char** retval) { \ | |
401 | const char* choices[] = __VA_ARGS__; \ | |
402 | options::parse_choices(option_name, arg, retval, \ | |
403 | choices, sizeof(choices) / sizeof(*choices)); \ | |
404 | } | |
405 | ||
2b706932 ILT |
406 | // This is like DEFINE_bool, but VARNAME is the name of a different |
407 | // option. This option becomes an alias for that one. INVERT is true | |
408 | // if this option is an inversion of the other one. | |
409 | #define DEFINE_bool_alias(option__, varname__, dashes__, shortname__, \ | |
410 | helpstring__, no_helpstring__, invert__) \ | |
411 | private: \ | |
412 | struct Struct_##option__ : public options::Struct_var \ | |
413 | { \ | |
414 | Struct_##option__() \ | |
415 | : option(#option__, dashes__, shortname__, "", helpstring__, \ | |
416 | NULL, false, this) \ | |
417 | { } \ | |
418 | \ | |
419 | void \ | |
420 | parse_to_value(const char*, const char*, \ | |
421 | Command_line*, General_options* options) \ | |
422 | { \ | |
423 | options->set_##varname__(!invert__); \ | |
424 | options->set_user_set_##varname__(); \ | |
425 | } \ | |
426 | \ | |
427 | options::One_option option; \ | |
428 | }; \ | |
429 | Struct_##option__ option__##_; \ | |
430 | \ | |
431 | struct Struct_no_##option__ : public options::Struct_var \ | |
432 | { \ | |
433 | Struct_no_##option__() \ | |
434 | : option((dashes__ == options::DASH_Z \ | |
435 | ? "no" #option__ \ | |
436 | : "no-" #option__), \ | |
437 | dashes__, '\0', "", no_helpstring__, \ | |
438 | NULL, false, this) \ | |
439 | { } \ | |
440 | \ | |
441 | void \ | |
442 | parse_to_value(const char*, const char*, \ | |
443 | Command_line*, General_options* options) \ | |
444 | { \ | |
445 | options->set_##varname__(invert__); \ | |
446 | options->set_user_set_##varname__(); \ | |
447 | } \ | |
448 | \ | |
449 | options::One_option option; \ | |
450 | }; \ | |
451 | Struct_no_##option__ no_##option__##_initializer_ | |
452 | ||
ee1fe73e ILT |
453 | // This is used for non-standard flags. It defines no functions; it |
454 | // just calls General_options::parse_VARNAME whenever the flag is | |
455 | // seen. We declare parse_VARNAME as a static member of | |
456 | // General_options; you are responsible for defining it there. | |
457 | // helparg__ should be NULL iff this special-option is a boolean. | |
458 | #define DEFINE_special(varname__, dashes__, shortname__, \ | |
459 | helpstring__, helparg__) \ | |
460 | private: \ | |
461 | void parse_##varname__(const char* option, const char* arg, \ | |
462 | Command_line* inputs); \ | |
463 | struct Struct_##varname__ : public options::Struct_special \ | |
464 | { \ | |
465 | Struct_##varname__() \ | |
466 | : options::Struct_special(#varname__, dashes__, shortname__, \ | |
467 | &General_options::parse_##varname__, \ | |
468 | helpstring__, helparg__) \ | |
469 | { } \ | |
470 | }; \ | |
471 | Struct_##varname__ varname__##_initializer_ | |
bae7f79e | 472 | |
086a1841 ILT |
473 | // An option that takes an optional string argument. If the option is |
474 | // used with no argument, the value will be the default, and | |
475 | // user_set_via_option will be true. | |
476 | #define DEFINE_optional_string(varname__, dashes__, shortname__, \ | |
477 | default_value__, \ | |
478 | helpstring__, helparg__) \ | |
479 | DEFINE_var(varname__, dashes__, shortname__, default_value__, \ | |
480 | default_value__, helpstring__, helparg__, true, \ | |
481 | const char*, const char*, options::parse_optional_string) | |
bae7f79e | 482 | |
ad2d6943 ILT |
483 | // A directory to search. For each directory we record whether it is |
484 | // in the sysroot. We need to know this so that, if a linker script | |
485 | // is found within the sysroot, we will apply the sysroot to any files | |
486 | // named by that script. | |
487 | ||
488 | class Search_directory | |
489 | { | |
490 | public: | |
491 | // We need a default constructor because we put this in a | |
492 | // std::vector. | |
493 | Search_directory() | |
494 | : name_(NULL), put_in_sysroot_(false), is_in_sysroot_(false) | |
495 | { } | |
496 | ||
497 | // This is the usual constructor. | |
498 | Search_directory(const char* name, bool put_in_sysroot) | |
499 | : name_(name), put_in_sysroot_(put_in_sysroot), is_in_sysroot_(false) | |
15893b88 ILT |
500 | { |
501 | if (this->name_.empty()) | |
502 | this->name_ = "."; | |
503 | } | |
ad2d6943 ILT |
504 | |
505 | // This is called if we have a sysroot. The sysroot is prefixed to | |
506 | // any entries for which put_in_sysroot_ is true. is_in_sysroot_ is | |
507 | // set to true for any enries which are in the sysroot (this will | |
508 | // naturally include any entries for which put_in_sysroot_ is true). | |
509 | // SYSROOT is the sysroot, CANONICAL_SYSROOT is the result of | |
510 | // passing SYSROOT to lrealpath. | |
511 | void | |
512 | add_sysroot(const char* sysroot, const char* canonical_sysroot); | |
513 | ||
514 | // Get the directory name. | |
515 | const std::string& | |
516 | name() const | |
517 | { return this->name_; } | |
518 | ||
519 | // Return whether this directory is in the sysroot. | |
520 | bool | |
521 | is_in_sysroot() const | |
522 | { return this->is_in_sysroot_; } | |
523 | ||
524 | private: | |
525 | std::string name_; | |
526 | bool put_in_sysroot_; | |
527 | bool is_in_sysroot_; | |
528 | }; | |
529 | ||
bae7f79e ILT |
530 | class General_options |
531 | { | |
ee1fe73e ILT |
532 | private: |
533 | // NOTE: For every option that you add here, also consider if you | |
534 | // should add it to Position_dependent_options. | |
535 | DEFINE_special(help, options::TWO_DASHES, '\0', | |
a4d4b13f | 536 | N_("Report usage information"), NULL); |
ee1fe73e | 537 | DEFINE_special(version, options::TWO_DASHES, 'v', |
a4d4b13f | 538 | N_("Report version information"), NULL); |
b5be4a7c DM |
539 | DEFINE_special(V, options::EXACTLY_ONE_DASH, '\0', |
540 | N_("Report version and target information"), NULL); | |
ee1fe73e | 541 | |
fee2edb1 ILT |
542 | // These options are sorted approximately so that for each letter in |
543 | // the alphabet, we show the option whose shortname is that letter | |
544 | // (if any) and then every longname that starts with that letter (in | |
545 | // alphabetical order). For both, lowercase sorts before uppercase. | |
546 | // The -z options come last. | |
547 | ||
ee1fe73e | 548 | DEFINE_bool(allow_shlib_undefined, options::TWO_DASHES, '\0', false, |
a4d4b13f ILT |
549 | N_("Allow unresolved references in shared libraries"), |
550 | N_("Do not allow unresolved references in shared libraries")); | |
ee1fe73e ILT |
551 | |
552 | DEFINE_bool(as_needed, options::TWO_DASHES, '\0', false, | |
a4d4b13f ILT |
553 | N_("Only set DT_NEEDED for dynamic libs if used"), |
554 | N_("Always DT_NEEDED for dynamic libs")); | |
ee1fe73e | 555 | |
fee2edb1 ILT |
556 | // This should really be an "enum", but it's too easy for folks to |
557 | // forget to update the list as they add new targets. So we just | |
558 | // accept any string. We'll fail later (when the string is parsed), | |
559 | // if the target isn't actually supported. | |
560 | DEFINE_string(format, options::TWO_DASHES, 'b', "elf", | |
561 | N_("Set input format"), ("[elf,binary]")); | |
562 | ||
ee1fe73e | 563 | DEFINE_bool(Bdynamic, options::ONE_DASH, '\0', true, |
a4d4b13f | 564 | N_("-l searches for shared libraries"), NULL); |
2b706932 ILT |
565 | DEFINE_bool_alias(Bstatic, Bdynamic, options::ONE_DASH, '\0', |
566 | N_("-l does not search for shared libraries"), NULL, | |
567 | true); | |
ee1fe73e ILT |
568 | |
569 | DEFINE_bool(Bsymbolic, options::ONE_DASH, '\0', false, | |
a4d4b13f | 570 | N_("Bind defined symbols locally"), NULL); |
ee1fe73e | 571 | |
f1f70eae ILT |
572 | DEFINE_bool(Bsymbolic_functions, options::ONE_DASH, '\0', false, |
573 | N_("Bind defined function symbols locally"), NULL); | |
574 | ||
8ed814a9 ILT |
575 | DEFINE_optional_string(build_id, options::TWO_DASHES, '\0', "sha1", |
576 | N_("Generate build ID note"), | |
577 | N_("[=STYLE]")); | |
578 | ||
ee1fe73e ILT |
579 | #ifdef HAVE_ZLIB_H |
580 | DEFINE_enum(compress_debug_sections, options::TWO_DASHES, '\0', "none", | |
a4d4b13f ILT |
581 | N_("Compress .debug_* sections in the output file"), |
582 | ("[none,zlib]"), | |
ee1fe73e ILT |
583 | {"none", "zlib"}); |
584 | #else | |
585 | DEFINE_enum(compress_debug_sections, options::TWO_DASHES, '\0', "none", | |
a4d4b13f ILT |
586 | N_("Compress .debug_* sections in the output file"), |
587 | N_("[none]"), | |
ee1fe73e ILT |
588 | {"none"}); |
589 | #endif | |
0dfbdef4 | 590 | |
ee1fe73e | 591 | DEFINE_bool(define_common, options::TWO_DASHES, 'd', false, |
a4d4b13f ILT |
592 | N_("Define common symbols"), |
593 | N_("Do not define common symbols")); | |
ee1fe73e | 594 | DEFINE_bool(dc, options::ONE_DASH, '\0', false, |
a4d4b13f | 595 | N_("Alias for -d"), NULL); |
ee1fe73e | 596 | DEFINE_bool(dp, options::ONE_DASH, '\0', false, |
a4d4b13f | 597 | N_("Alias for -d"), NULL); |
d391083d | 598 | |
fee2edb1 | 599 | DEFINE_string(debug, options::TWO_DASHES, '\0', "", |
2285a610 ILT |
600 | N_("Turn on debugging"), |
601 | N_("[all,files,script,task][,...]")); | |
fee2edb1 | 602 | |
ee1fe73e | 603 | DEFINE_special(defsym, options::TWO_DASHES, '\0', |
a4d4b13f | 604 | N_("Define a symbol"), N_("SYMBOL=EXPRESSION")); |
a6badf5a | 605 | |
086a1841 ILT |
606 | DEFINE_optional_string(demangle, options::TWO_DASHES, '\0', NULL, |
607 | N_("Demangle C++ symbols in log messages"), | |
608 | N_("[=STYLE]")); | |
609 | ||
610 | DEFINE_bool(no_demangle, options::TWO_DASHES, '\0', false, | |
611 | N_("Do not demangle C++ symbols in log messages"), | |
612 | NULL); | |
fced7afd | 613 | |
ee1fe73e | 614 | DEFINE_bool(detect_odr_violations, options::TWO_DASHES, '\0', false, |
a4d4b13f | 615 | N_("Try to detect violations of the One Definition Rule"), |
ee1fe73e ILT |
616 | NULL); |
617 | ||
618 | DEFINE_string(entry, options::TWO_DASHES, 'e', NULL, | |
a4d4b13f | 619 | N_("Set program start address"), N_("ADDRESS")); |
ee1fe73e ILT |
620 | |
621 | DEFINE_bool(export_dynamic, options::TWO_DASHES, 'E', false, | |
a4d4b13f | 622 | N_("Export all dynamic symbols"), NULL); |
dbe717ef | 623 | |
ee1fe73e | 624 | DEFINE_bool(eh_frame_hdr, options::TWO_DASHES, '\0', false, |
a4d4b13f | 625 | N_("Create exception frame header"), NULL); |
ee1fe73e | 626 | |
d82a5bcc ILT |
627 | DEFINE_bool(fatal_warnings, options::TWO_DASHES, '\0', false, |
628 | N_("Treat warnings as errors"), | |
629 | N_("Do not treat warnings as errors")); | |
630 | ||
ee1fe73e | 631 | DEFINE_string(soname, options::ONE_DASH, 'h', NULL, |
a4d4b13f | 632 | N_("Set shared library name"), N_("FILENAME")); |
ee1fe73e | 633 | |
c18476e7 ILT |
634 | DEFINE_double(hash_bucket_empty_fraction, options::TWO_DASHES, '\0', 0.0, |
635 | N_("Min fraction of empty buckets in dynamic hash"), | |
636 | N_("FRACTION")); | |
637 | ||
13670ee6 | 638 | DEFINE_enum(hash_style, options::TWO_DASHES, '\0', "sysv", |
a4d4b13f | 639 | N_("Dynamic hash style"), N_("[sysv,gnu,both]"), |
13670ee6 ILT |
640 | {"sysv", "gnu", "both"}); |
641 | ||
ee1fe73e | 642 | DEFINE_string(dynamic_linker, options::TWO_DASHES, 'I', NULL, |
a4d4b13f | 643 | N_("Set dynamic linker path"), N_("PROGRAM")); |
ee1fe73e | 644 | |
fee2edb1 ILT |
645 | DEFINE_special(just_symbols, options::TWO_DASHES, '\0', |
646 | N_("Read only symbol values from FILE"), N_("FILE")); | |
647 | ||
ee1fe73e | 648 | DEFINE_special(library, options::TWO_DASHES, 'l', |
a4d4b13f | 649 | N_("Search for library LIBNAME"), N_("LIBNAME")); |
bae7f79e | 650 | |
ee1fe73e | 651 | DEFINE_dirlist(library_path, options::TWO_DASHES, 'L', |
a4d4b13f | 652 | N_("Add directory to search path"), N_("DIR")); |
ee1fe73e ILT |
653 | |
654 | DEFINE_string(m, options::EXACTLY_ONE_DASH, 'm', "", | |
a4d4b13f | 655 | N_("Ignored for compatibility"), N_("EMULATION")); |
ee1fe73e | 656 | |
7d9e3d98 ILT |
657 | DEFINE_bool(print_map, options::TWO_DASHES, 'M', false, |
658 | N_("Write map file on standard output"), NULL); | |
659 | DEFINE_string(Map, options::ONE_DASH, '\0', NULL, N_("Write map file"), | |
660 | N_("MAPFILENAME")); | |
661 | ||
7c414435 DM |
662 | DEFINE_enable(new_dtags, options::EXACTLY_TWO_DASHES, '\0', false, |
663 | N_("Enable use of DT_RUNPATH and DT_FLAGS"), | |
664 | N_("Disable use of DT_RUNPATH and DT_FLAGS")); | |
665 | ||
cdb0b8f5 ILT |
666 | DEFINE_bool(noinhibit_exec, options::TWO_DASHES, '\0', false, |
667 | N_("Create an output file even if errors occur"), NULL); | |
668 | ||
f3e9c5c5 ILT |
669 | DEFINE_bool_alias(no_undefined, defs, options::TWO_DASHES, '\0', |
670 | N_("Report undefined symbols (even with --shared)"), | |
671 | NULL, false); | |
672 | ||
ee1fe73e | 673 | DEFINE_string(output, options::TWO_DASHES, 'o', "a.out", |
a4d4b13f | 674 | N_("Set output file name"), N_("FILE")); |
ee1fe73e ILT |
675 | |
676 | DEFINE_uint(optimize, options::EXACTLY_ONE_DASH, 'O', 0, | |
a4d4b13f | 677 | N_("Optimize output file size"), N_("LEVEL")); |
ee1fe73e | 678 | |
a4d4b13f ILT |
679 | DEFINE_string(oformat, options::EXACTLY_TWO_DASHES, '\0', "elf", |
680 | N_("Set output format"), N_("[binary]")); | |
ee1fe73e | 681 | |
b5be4a7c DM |
682 | DEFINE_bool(Qy, options::EXACTLY_ONE_DASH, '\0', false, |
683 | N_("Ignored for SVR4 compatibility"), NULL); | |
684 | ||
ee1fe73e | 685 | DEFINE_bool(emit_relocs, options::TWO_DASHES, 'q', false, |
a4d4b13f | 686 | N_("Generate relocations in output"), NULL); |
ee1fe73e ILT |
687 | |
688 | DEFINE_bool(relocatable, options::EXACTLY_ONE_DASH, 'r', false, | |
a4d4b13f | 689 | N_("Generate relocatable output"), NULL); |
ee1fe73e | 690 | |
706e1f5e ILT |
691 | DEFINE_bool(relax, options::TWO_DASHES, '\0', false, |
692 | N_("Relax branches on certain targets"), NULL); | |
693 | ||
ee1fe73e ILT |
694 | // -R really means -rpath, but can mean --just-symbols for |
695 | // compatibility with GNU ld. -rpath is always -rpath, so we list | |
696 | // it separately. | |
697 | DEFINE_special(R, options::EXACTLY_ONE_DASH, 'R', | |
a4d4b13f | 698 | N_("Add DIR to runtime search path"), N_("DIR")); |
ee1fe73e ILT |
699 | |
700 | DEFINE_dirlist(rpath, options::ONE_DASH, '\0', | |
a4d4b13f | 701 | N_("Add DIR to runtime search path"), N_("DIR")); |
ee1fe73e | 702 | |
ee1fe73e | 703 | DEFINE_dirlist(rpath_link, options::TWO_DASHES, '\0', |
a4d4b13f ILT |
704 | N_("Add DIR to link time shared library search path"), |
705 | N_("DIR")); | |
ee1fe73e ILT |
706 | |
707 | DEFINE_bool(strip_all, options::TWO_DASHES, 's', false, | |
a4d4b13f | 708 | N_("Strip all symbols"), NULL); |
fee2edb1 ILT |
709 | DEFINE_bool(strip_debug, options::TWO_DASHES, 'S', false, |
710 | N_("Strip debugging information"), NULL); | |
62b01cb5 ILT |
711 | DEFINE_bool(strip_debug_non_line, options::TWO_DASHES, '\0', false, |
712 | N_("Emit only debug line number information"), NULL); | |
ee1fe73e | 713 | DEFINE_bool(strip_debug_gdb, options::TWO_DASHES, '\0', false, |
a4d4b13f | 714 | N_("Strip debug symbols that are unused by gdb " |
ee1fe73e | 715 | "(at least versions <= 6.7)"), NULL); |
ee1fe73e ILT |
716 | |
717 | DEFINE_bool(shared, options::ONE_DASH, '\0', false, | |
a4d4b13f | 718 | N_("Generate shared library"), NULL); |
ee1fe73e ILT |
719 | |
720 | // This is not actually special in any way, but I need to give it | |
721 | // a non-standard accessor-function name because 'static' is a keyword. | |
722 | DEFINE_special(static, options::ONE_DASH, '\0', | |
a4d4b13f | 723 | N_("Do not link against shared libraries"), NULL); |
ee1fe73e ILT |
724 | |
725 | DEFINE_bool(stats, options::TWO_DASHES, '\0', false, | |
a4d4b13f | 726 | N_("Print resource usage statistics"), NULL); |
ee1fe73e ILT |
727 | |
728 | DEFINE_string(sysroot, options::TWO_DASHES, '\0', "", | |
a4d4b13f | 729 | N_("Set target system root directory"), N_("DIR")); |
ee1fe73e | 730 | |
c5818ff1 CC |
731 | DEFINE_bool(trace, options::TWO_DASHES, 't', false, |
732 | N_("Print the name of each input file"), NULL); | |
733 | ||
ee1fe73e | 734 | DEFINE_special(script, options::TWO_DASHES, 'T', |
a4d4b13f | 735 | N_("Read linker script"), N_("FILE")); |
ee1fe73e ILT |
736 | |
737 | DEFINE_bool(threads, options::TWO_DASHES, '\0', false, | |
a4d4b13f ILT |
738 | N_("Run the linker multi-threaded"), |
739 | N_("Do not run the linker multi-threaded")); | |
ee1fe73e | 740 | DEFINE_uint(thread_count, options::TWO_DASHES, '\0', 0, |
a4d4b13f | 741 | N_("Number of threads to use"), N_("COUNT")); |
ee1fe73e | 742 | DEFINE_uint(thread_count_initial, options::TWO_DASHES, '\0', 0, |
a4d4b13f | 743 | N_("Number of threads to use in initial pass"), N_("COUNT")); |
ee1fe73e | 744 | DEFINE_uint(thread_count_middle, options::TWO_DASHES, '\0', 0, |
a4d4b13f | 745 | N_("Number of threads to use in middle pass"), N_("COUNT")); |
ee1fe73e | 746 | DEFINE_uint(thread_count_final, options::TWO_DASHES, '\0', 0, |
a4d4b13f | 747 | N_("Number of threads to use in final pass"), N_("COUNT")); |
ee1fe73e | 748 | |
fee2edb1 ILT |
749 | DEFINE_uint64(Tbss, options::ONE_DASH, '\0', -1U, |
750 | N_("Set the address of the bss segment"), N_("ADDRESS")); | |
751 | DEFINE_uint64(Tdata, options::ONE_DASH, '\0', -1U, | |
752 | N_("Set the address of the data segment"), N_("ADDRESS")); | |
753 | DEFINE_uint64(Ttext, options::ONE_DASH, '\0', -1U, | |
754 | N_("Set the address of the text segment"), N_("ADDRESS")); | |
755 | ||
f3e9c5c5 ILT |
756 | DEFINE_set(undefined, options::TWO_DASHES, 'u', |
757 | N_("Create undefined reference to SYMBOL"), N_("SYMBOL")); | |
2b706932 | 758 | |
2285a610 ILT |
759 | DEFINE_bool(verbose, options::TWO_DASHES, '\0', false, |
760 | N_("Synonym for --debug=files"), NULL); | |
761 | ||
fee2edb1 ILT |
762 | DEFINE_special(version_script, options::TWO_DASHES, '\0', |
763 | N_("Read version script"), N_("FILE")); | |
764 | ||
ee1fe73e | 765 | DEFINE_bool(whole_archive, options::TWO_DASHES, '\0', false, |
a4d4b13f ILT |
766 | N_("Include all archive contents"), |
767 | N_("Include only needed archive contents")); | |
ee1fe73e | 768 | |
c5818ff1 CC |
769 | DEFINE_set(wrap, options::TWO_DASHES, '\0', |
770 | N_("Use wrapper functions for SYMBOL"), N_("SYMBOL")); | |
771 | ||
772 | DEFINE_set(trace_symbol, options::TWO_DASHES, 'y', | |
773 | N_("Trace references to symbol"), N_("SYMBOL")); | |
0864d551 | 774 | |
706e1f5e ILT |
775 | DEFINE_string(Y, options::EXACTLY_ONE_DASH, 'Y', "", |
776 | N_("Default search path for Solaris compatibility"), | |
777 | N_("PATH")); | |
778 | ||
ee1fe73e | 779 | DEFINE_special(start_group, options::TWO_DASHES, '(', |
a4d4b13f | 780 | N_("Start a library search group"), NULL); |
ee1fe73e | 781 | DEFINE_special(end_group, options::TWO_DASHES, ')', |
a4d4b13f | 782 | N_("End a library search group"), NULL); |
ee1fe73e | 783 | |
fee2edb1 | 784 | // The -z options. |
ee1fe73e | 785 | |
d98bc257 ILT |
786 | DEFINE_bool(combreloc, options::DASH_Z, '\0', true, |
787 | N_("Sort dynamic relocs"), | |
788 | N_("Do not sort dynamic relocs")); | |
fee2edb1 ILT |
789 | DEFINE_uint64(common_page_size, options::DASH_Z, '\0', 0, |
790 | N_("Set common page size to SIZE"), N_("SIZE")); | |
eb42429a ILT |
791 | DEFINE_bool(defs, options::DASH_Z, '\0', false, |
792 | N_("Report undefined symbols (even with --shared)"), | |
793 | NULL); | |
ee1fe73e | 794 | DEFINE_bool(execstack, options::DASH_Z, '\0', false, |
a4d4b13f | 795 | N_("Mark output as requiring executable stack"), NULL); |
ee1fe73e | 796 | DEFINE_uint64(max_page_size, options::DASH_Z, '\0', 0, |
a4d4b13f | 797 | N_("Set maximum page size to SIZE"), N_("SIZE")); |
fee2edb1 ILT |
798 | DEFINE_bool(noexecstack, options::DASH_Z, '\0', false, |
799 | N_("Mark output as not requiring executable stack"), NULL); | |
7c414435 DM |
800 | DEFINE_bool(initfirst, options::DASH_Z, '\0', false, |
801 | N_("Mark DSO to be initialized first at runtime"), | |
802 | NULL); | |
803 | DEFINE_bool(interpose, options::DASH_Z, '\0', false, | |
804 | N_("Mark object to interpose all DSOs but executable"), | |
805 | NULL); | |
806 | DEFINE_bool(loadfltr, options::DASH_Z, '\0', false, | |
807 | N_("Mark object requiring immediate process"), | |
808 | NULL); | |
809 | DEFINE_bool(nodefaultlib, options::DASH_Z, '\0', false, | |
810 | N_("Mark object not to use default search paths"), | |
811 | NULL); | |
812 | DEFINE_bool(nodelete, options::DASH_Z, '\0', false, | |
813 | N_("Mark DSO non-deletable at runtime"), | |
814 | NULL); | |
815 | DEFINE_bool(nodlopen, options::DASH_Z, '\0', false, | |
816 | N_("Mark DSO not available to dlopen"), | |
817 | NULL); | |
818 | DEFINE_bool(nodump, options::DASH_Z, '\0', false, | |
819 | N_("Mark DSO not available to dldump"), | |
820 | NULL); | |
9f1d377b ILT |
821 | DEFINE_bool(relro, options::DASH_Z, '\0', false, |
822 | N_("Where possible mark variables read-only after relocation"), | |
823 | N_("Don't mark variables read-only after relocation")); | |
bae7f79e | 824 | |
ee1fe73e ILT |
825 | public: |
826 | typedef options::Dir_list Dir_list; | |
ca3a67a5 | 827 | |
ee1fe73e | 828 | General_options(); |
61ba1cf9 | 829 | |
ee1fe73e ILT |
830 | // Does post-processing on flags, making sure they all have |
831 | // non-conflicting values. Also converts some flags from their | |
832 | // "standard" types (string, etc), to another type (enum, DirList), | |
833 | // which can be accessed via a separate method. Dies if it notices | |
834 | // any problems. | |
835 | void finalize(); | |
516cb3d0 | 836 | |
ee1fe73e ILT |
837 | // The macro defines output() (based on --output), but that's a |
838 | // generic name. Provide this alternative name, which is clearer. | |
8851ecca | 839 | const char* |
ee1fe73e ILT |
840 | output_file_name() const |
841 | { return this->output(); } | |
92e059d8 | 842 | |
8851ecca ILT |
843 | // This is not defined via a flag, but combines flags to say whether |
844 | // the output is position-independent or not. | |
845 | bool | |
846 | output_is_position_independent() const | |
847 | { return this->shared(); } | |
848 | ||
ee1fe73e ILT |
849 | // This would normally be static(), and defined automatically, but |
850 | // since static is a keyword, we need to come up with our own name. | |
bae7f79e ILT |
851 | bool |
852 | is_static() const | |
ee1fe73e | 853 | { return static_; } |
756ac4a8 | 854 | |
ee1fe73e ILT |
855 | // In addition to getting the input and output formats as a string |
856 | // (via format() and oformat()), we also give access as an enum. | |
857 | enum Object_format | |
858 | { | |
859 | // Ordinary ELF. | |
860 | OBJECT_FORMAT_ELF, | |
861 | // Straight binary format. | |
862 | OBJECT_FORMAT_BINARY | |
863 | }; | |
fe9a4c12 | 864 | |
ee1fe73e ILT |
865 | // Note: these functions are not very fast. |
866 | Object_format format_enum() const; | |
867 | Object_format oformat_enum() const; | |
fe9a4c12 | 868 | |
ee1fe73e ILT |
869 | // These are the best way to get access to the execstack state, |
870 | // not execstack() and noexecstack() which are hard to use properly. | |
35cdfc9a ILT |
871 | bool |
872 | is_execstack_set() const | |
ee1fe73e | 873 | { return this->execstack_status_ != EXECSTACK_FROM_INPUT; } |
35cdfc9a ILT |
874 | |
875 | bool | |
876 | is_stack_executable() const | |
ee1fe73e | 877 | { return this->execstack_status_ == EXECSTACK_YES; } |
c7912668 | 878 | |
086a1841 ILT |
879 | // The --demangle option takes an optional string, and there is also |
880 | // a --no-demangle option. This is the best way to decide whether | |
881 | // to demangle or not. | |
882 | bool | |
883 | do_demangle() const | |
884 | { return this->do_demangle_; } | |
885 | ||
bae7f79e | 886 | private: |
dbe717ef ILT |
887 | // Don't copy this structure. |
888 | General_options(const General_options&); | |
889 | General_options& operator=(const General_options&); | |
890 | ||
35cdfc9a ILT |
891 | // Whether to mark the stack as executable. |
892 | enum Execstack | |
893 | { | |
894 | // Not set on command line. | |
895 | EXECSTACK_FROM_INPUT, | |
ee1fe73e | 896 | // Mark the stack as executable (-z execstack). |
35cdfc9a | 897 | EXECSTACK_YES, |
ee1fe73e | 898 | // Mark the stack as not executable (-z noexecstack). |
35cdfc9a ILT |
899 | EXECSTACK_NO |
900 | }; | |
901 | ||
92e059d8 | 902 | void |
ee1fe73e | 903 | set_execstack_status(Execstack value) |
086a1841 ILT |
904 | { this->execstack_status_ = value; } |
905 | ||
906 | void | |
907 | set_do_demangle(bool value) | |
908 | { this->do_demangle_ = value; } | |
92e059d8 | 909 | |
bae7f79e | 910 | void |
45aa233b | 911 | set_static(bool value) |
ee1fe73e | 912 | { static_ = value; } |
652ec9bd | 913 | |
ee1fe73e | 914 | // These are called by finalize() to set up the search-path correctly. |
35cdfc9a | 915 | void |
ee1fe73e ILT |
916 | add_to_library_path_with_sysroot(const char* arg) |
917 | { this->add_search_directory_to_library_path(Search_directory(arg, true)); } | |
c7912668 | 918 | |
ad2d6943 ILT |
919 | // Apply any sysroot to the directory lists. |
920 | void | |
921 | add_sysroot(); | |
086a1841 ILT |
922 | |
923 | // Whether to mark the stack as executable. | |
924 | Execstack execstack_status_; | |
925 | // Whether to do a static link. | |
926 | bool static_; | |
927 | // Whether to do demangling. | |
928 | bool do_demangle_; | |
bae7f79e ILT |
929 | }; |
930 | ||
ee1fe73e ILT |
931 | // The position-dependent options. We use this to store the state of |
932 | // the commandline at a particular point in parsing for later | |
933 | // reference. For instance, if we see "ld --whole-archive foo.a | |
934 | // --no-whole-archive," we want to store the whole-archive option with | |
935 | // foo.a, so when the time comes to parse foo.a we know we should do | |
936 | // it in whole-archive mode. We could store all of General_options, | |
937 | // but that's big, so we just pick the subset of flags that actually | |
938 | // change in a position-dependent way. | |
939 | ||
940 | #define DEFINE_posdep(varname__, type__) \ | |
941 | public: \ | |
942 | type__ \ | |
943 | varname__() const \ | |
944 | { return this->varname__##_; } \ | |
945 | \ | |
946 | void \ | |
947 | set_##varname__(type__ value) \ | |
948 | { this->varname__##_ = value; } \ | |
949 | private: \ | |
950 | type__ varname__##_ | |
bae7f79e ILT |
951 | |
952 | class Position_dependent_options | |
953 | { | |
954 | public: | |
ee1fe73e ILT |
955 | Position_dependent_options(const General_options& options |
956 | = Position_dependent_options::default_options_) | |
957 | { copy_from_options(options); } | |
bae7f79e | 958 | |
ee1fe73e ILT |
959 | void copy_from_options(const General_options& options) |
960 | { | |
961 | this->set_as_needed(options.as_needed()); | |
962 | this->set_Bdynamic(options.Bdynamic()); | |
963 | this->set_format_enum(options.format_enum()); | |
964 | this->set_whole_archive(options.whole_archive()); | |
965 | } | |
bc644c6c | 966 | |
ee1fe73e ILT |
967 | DEFINE_posdep(as_needed, bool); |
968 | DEFINE_posdep(Bdynamic, bool); | |
969 | DEFINE_posdep(format_enum, General_options::Object_format); | |
970 | DEFINE_posdep(whole_archive, bool); | |
7cc619c3 | 971 | |
dbe717ef | 972 | private: |
ee1fe73e ILT |
973 | // This is a General_options with everything set to its default |
974 | // value. A Position_dependent_options created with no argument | |
975 | // will take its values from here. | |
976 | static General_options default_options_; | |
bae7f79e ILT |
977 | }; |
978 | ||
ee1fe73e | 979 | |
bae7f79e ILT |
980 | // A single file or library argument from the command line. |
981 | ||
ead1e424 | 982 | class Input_file_argument |
bae7f79e ILT |
983 | { |
984 | public: | |
51dee2fe ILT |
985 | // name: file name or library name |
986 | // is_lib: true if name is a library name: that is, emits the leading | |
987 | // "lib" and trailing ".so"/".a" from the name | |
988 | // extra_search_path: an extra directory to look for the file, prior | |
989 | // to checking the normal library search path. If this is "", | |
990 | // then no extra directory is added. | |
88dd47ac | 991 | // just_symbols: whether this file only defines symbols. |
51dee2fe | 992 | // options: The position dependent options at this point in the |
ad2d6943 | 993 | // command line, such as --whole-archive. |
ead1e424 | 994 | Input_file_argument() |
88dd47ac ILT |
995 | : name_(), is_lib_(false), extra_search_path_(""), just_symbols_(false), |
996 | options_() | |
ead1e424 ILT |
997 | { } |
998 | ||
999 | Input_file_argument(const char* name, bool is_lib, | |
51dee2fe | 1000 | const char* extra_search_path, |
ee1fe73e ILT |
1001 | bool just_symbols, |
1002 | const Position_dependent_options& options) | |
1003 | : name_(name), is_lib_(is_lib), extra_search_path_(extra_search_path), | |
1004 | just_symbols_(just_symbols), options_(options) | |
1005 | { } | |
1006 | ||
1007 | // You can also pass in a General_options instance instead of a | |
1008 | // Position_dependent_options. In that case, we extract the | |
1009 | // position-independent vars from the General_options and only store | |
1010 | // those. | |
1011 | Input_file_argument(const char* name, bool is_lib, | |
1012 | const char* extra_search_path, | |
1013 | bool just_symbols, | |
1014 | const General_options& options) | |
51dee2fe | 1015 | : name_(name), is_lib_(is_lib), extra_search_path_(extra_search_path), |
88dd47ac | 1016 | just_symbols_(just_symbols), options_(options) |
bae7f79e ILT |
1017 | { } |
1018 | ||
1019 | const char* | |
1020 | name() const | |
dbe717ef | 1021 | { return this->name_.c_str(); } |
bae7f79e ILT |
1022 | |
1023 | const Position_dependent_options& | |
1024 | options() const | |
1025 | { return this->options_; } | |
1026 | ||
1027 | bool | |
1028 | is_lib() const | |
61ba1cf9 | 1029 | { return this->is_lib_; } |
bae7f79e | 1030 | |
51dee2fe ILT |
1031 | const char* |
1032 | extra_search_path() const | |
1033 | { | |
1034 | return (this->extra_search_path_.empty() | |
1035 | ? NULL | |
ee1fe73e | 1036 | : this->extra_search_path_.c_str()); |
51dee2fe ILT |
1037 | } |
1038 | ||
88dd47ac ILT |
1039 | // Return whether we should only read symbols from this file. |
1040 | bool | |
1041 | just_symbols() const | |
1042 | { return this->just_symbols_; } | |
1043 | ||
51dee2fe ILT |
1044 | // Return whether this file may require a search using the -L |
1045 | // options. | |
1046 | bool | |
1047 | may_need_search() const | |
1048 | { return this->is_lib_ || !this->extra_search_path_.empty(); } | |
1049 | ||
bae7f79e | 1050 | private: |
dbe717ef ILT |
1051 | // We use std::string, not const char*, here for convenience when |
1052 | // using script files, so that we do not have to preserve the string | |
1053 | // in that case. | |
1054 | std::string name_; | |
61ba1cf9 | 1055 | bool is_lib_; |
51dee2fe | 1056 | std::string extra_search_path_; |
88dd47ac | 1057 | bool just_symbols_; |
bae7f79e ILT |
1058 | Position_dependent_options options_; |
1059 | }; | |
1060 | ||
ead1e424 ILT |
1061 | // A file or library, or a group, from the command line. |
1062 | ||
1063 | class Input_argument | |
1064 | { | |
1065 | public: | |
1066 | // Create a file or library argument. | |
1067 | explicit Input_argument(Input_file_argument file) | |
1068 | : is_file_(true), file_(file), group_(NULL) | |
1069 | { } | |
1070 | ||
1071 | // Create a group argument. | |
1072 | explicit Input_argument(Input_file_group* group) | |
1073 | : is_file_(false), group_(group) | |
1074 | { } | |
1075 | ||
1076 | // Return whether this is a file. | |
1077 | bool | |
1078 | is_file() const | |
1079 | { return this->is_file_; } | |
1080 | ||
1081 | // Return whether this is a group. | |
1082 | bool | |
1083 | is_group() const | |
1084 | { return !this->is_file_; } | |
1085 | ||
1086 | // Return the information about the file. | |
1087 | const Input_file_argument& | |
1088 | file() const | |
1089 | { | |
a3ad94ed | 1090 | gold_assert(this->is_file_); |
ead1e424 ILT |
1091 | return this->file_; |
1092 | } | |
1093 | ||
1094 | // Return the information about the group. | |
1095 | const Input_file_group* | |
1096 | group() const | |
1097 | { | |
a3ad94ed | 1098 | gold_assert(!this->is_file_); |
ead1e424 ILT |
1099 | return this->group_; |
1100 | } | |
1101 | ||
1102 | Input_file_group* | |
1103 | group() | |
1104 | { | |
a3ad94ed | 1105 | gold_assert(!this->is_file_); |
ead1e424 ILT |
1106 | return this->group_; |
1107 | } | |
1108 | ||
1109 | private: | |
1110 | bool is_file_; | |
1111 | Input_file_argument file_; | |
1112 | Input_file_group* group_; | |
1113 | }; | |
1114 | ||
1115 | // A group from the command line. This is a set of arguments within | |
1116 | // --start-group ... --end-group. | |
1117 | ||
1118 | class Input_file_group | |
92e059d8 | 1119 | { |
ead1e424 ILT |
1120 | public: |
1121 | typedef std::vector<Input_argument> Files; | |
1122 | typedef Files::const_iterator const_iterator; | |
1123 | ||
1124 | Input_file_group() | |
1125 | : files_() | |
1126 | { } | |
1127 | ||
1128 | // Add a file to the end of the group. | |
1129 | void | |
1130 | add_file(const Input_file_argument& arg) | |
1131 | { this->files_.push_back(Input_argument(arg)); } | |
1132 | ||
1133 | // Iterators to iterate over the group contents. | |
1134 | ||
1135 | const_iterator | |
1136 | begin() const | |
1137 | { return this->files_.begin(); } | |
1138 | ||
1139 | const_iterator | |
1140 | end() const | |
1141 | { return this->files_.end(); } | |
1142 | ||
1143 | private: | |
1144 | Files files_; | |
92e059d8 ILT |
1145 | }; |
1146 | ||
dbe717ef ILT |
1147 | // A list of files from the command line or a script. |
1148 | ||
1149 | class Input_arguments | |
1150 | { | |
1151 | public: | |
1152 | typedef std::vector<Input_argument> Input_argument_list; | |
1153 | typedef Input_argument_list::const_iterator const_iterator; | |
1154 | ||
1155 | Input_arguments() | |
1156 | : input_argument_list_(), in_group_(false) | |
1157 | { } | |
1158 | ||
1159 | // Add a file. | |
1160 | void | |
1161 | add_file(const Input_file_argument& arg); | |
1162 | ||
1163 | // Start a group (the --start-group option). | |
1164 | void | |
1165 | start_group(); | |
1166 | ||
1167 | // End a group (the --end-group option). | |
1168 | void | |
1169 | end_group(); | |
1170 | ||
1171 | // Return whether we are currently in a group. | |
1172 | bool | |
1173 | in_group() const | |
1174 | { return this->in_group_; } | |
1175 | ||
fe9a4c12 ILT |
1176 | // The number of entries in the list. |
1177 | int | |
1178 | size() const | |
1179 | { return this->input_argument_list_.size(); } | |
1180 | ||
dbe717ef ILT |
1181 | // Iterators to iterate over the list of input files. |
1182 | ||
1183 | const_iterator | |
1184 | begin() const | |
1185 | { return this->input_argument_list_.begin(); } | |
1186 | ||
1187 | const_iterator | |
1188 | end() const | |
1189 | { return this->input_argument_list_.end(); } | |
1190 | ||
1191 | // Return whether the list is empty. | |
1192 | bool | |
1193 | empty() const | |
1194 | { return this->input_argument_list_.empty(); } | |
1195 | ||
1196 | private: | |
1197 | Input_argument_list input_argument_list_; | |
1198 | bool in_group_; | |
1199 | }; | |
1200 | ||
ee1fe73e ILT |
1201 | |
1202 | // All the information read from the command line. These are held in | |
1203 | // three separate structs: one to hold the options (--foo), one to | |
1204 | // hold the filenames listed on the commandline, and one to hold | |
1205 | // linker script information. This third is not a subset of the other | |
1206 | // two because linker scripts can be specified either as options (via | |
1207 | // -T) or as a file. | |
bae7f79e ILT |
1208 | |
1209 | class Command_line | |
1210 | { | |
1211 | public: | |
ead1e424 ILT |
1212 | typedef Input_arguments::const_iterator const_iterator; |
1213 | ||
a5dc0706 | 1214 | Command_line(); |
bae7f79e ILT |
1215 | |
1216 | // Process the command line options. This will exit with an | |
1217 | // appropriate error message if an unrecognized option is seen. | |
1218 | void | |
ee1fe73e | 1219 | process(int argc, const char** argv); |
bae7f79e | 1220 | |
a0451b38 | 1221 | // Process one command-line option. This takes the index of argv to |
ee1fe73e ILT |
1222 | // process, and returns the index for the next option. no_more_options |
1223 | // is set to true if argv[i] is "--". | |
61ba1cf9 | 1224 | int |
ee1fe73e ILT |
1225 | process_one_option(int argc, const char** argv, int i, |
1226 | bool* no_more_options); | |
3c2fafa5 | 1227 | |
61ba1cf9 | 1228 | // Get the general options. |
bae7f79e ILT |
1229 | const General_options& |
1230 | options() const | |
1231 | { return this->options_; } | |
1232 | ||
3c2fafa5 ILT |
1233 | // Get the position dependent options. |
1234 | const Position_dependent_options& | |
1235 | position_dependent_options() const | |
1236 | { return this->position_options_; } | |
1237 | ||
a5dc0706 ILT |
1238 | // Get the linker-script options. |
1239 | Script_options& | |
e5756efb | 1240 | script_options() |
a5dc0706 | 1241 | { return this->script_options_; } |
e5756efb | 1242 | |
a5dc0706 ILT |
1243 | // Get the version-script options: a convenience routine. |
1244 | const Version_script_info& | |
1245 | version_script() const | |
1246 | { return *this->script_options_.version_script_info(); } | |
e5756efb | 1247 | |
ee1fe73e ILT |
1248 | // Get the input files. |
1249 | Input_arguments& | |
1250 | inputs() | |
1251 | { return this->inputs_; } | |
1252 | ||
fe9a4c12 ILT |
1253 | // The number of input files. |
1254 | int | |
1255 | number_of_input_files() const | |
1256 | { return this->inputs_.size(); } | |
1257 | ||
ead1e424 ILT |
1258 | // Iterators to iterate over the list of input files. |
1259 | ||
1260 | const_iterator | |
1261 | begin() const | |
1262 | { return this->inputs_.begin(); } | |
1263 | ||
1264 | const_iterator | |
1265 | end() const | |
1266 | { return this->inputs_.end(); } | |
bae7f79e ILT |
1267 | |
1268 | private: | |
ead1e424 ILT |
1269 | Command_line(const Command_line&); |
1270 | Command_line& operator=(const Command_line&); | |
1271 | ||
bae7f79e ILT |
1272 | General_options options_; |
1273 | Position_dependent_options position_options_; | |
a5dc0706 | 1274 | Script_options script_options_; |
ead1e424 | 1275 | Input_arguments inputs_; |
bae7f79e ILT |
1276 | }; |
1277 | ||
1278 | } // End namespace gold. | |
1279 | ||
1280 | #endif // !defined(GOLD_OPTIONS_H) |