Mercurial > hg > CbC > CbC_gcc
comparison gcc/d/d-spec.cc @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
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date | Thu, 13 Feb 2020 11:34:05 +0900 |
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131:84e7813d76e9 | 145:1830386684a0 |
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1 /* d-spec.c -- Specific flags and argument handling of the D front end. | |
2 Copyright (C) 2006-2020 Free Software Foundation, Inc. | |
3 | |
4 GCC is free software; you can redistribute it and/or modify | |
5 it under the terms of the GNU General Public License as published by | |
6 the Free Software Foundation; either version 3, or (at your option) | |
7 any later version. | |
8 | |
9 GCC is distributed in the hope that it will be useful, | |
10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 GNU General Public License for more details. | |
13 | |
14 You should have received a copy of the GNU General Public License | |
15 along with GCC; see the file COPYING3. If not see | |
16 <http://www.gnu.org/licenses/>. */ | |
17 | |
18 #include "config.h" | |
19 #include "system.h" | |
20 #include "coretypes.h" | |
21 #include "opt-suggestions.h" | |
22 #include "gcc.h" | |
23 #include "tm.h" | |
24 #include "opts.h" | |
25 | |
26 /* This bit is set if the arguments is a D source file. */ | |
27 #define DSOURCE (1<<1) | |
28 /* This bit is set if they did `-lstdc++'. */ | |
29 #define WITHLIBCXX (1<<2) | |
30 /* Skip this option. */ | |
31 #define SKIPOPT (1<<3) | |
32 | |
33 #ifndef LIBSTDCXX | |
34 #define LIBSTDCXX "stdc++" | |
35 #endif | |
36 #ifndef LIBSTDCXX_PROFILE | |
37 #define LIBSTDCXX_PROFILE LIBSTDCXX | |
38 #endif | |
39 | |
40 #ifndef LIBPHOBOS | |
41 #define LIBPHOBOS "gphobos" | |
42 #endif | |
43 #ifndef LIBPHOBOS_PROFILE | |
44 #define LIBPHOBOS_PROFILE LIBPHOBOS | |
45 #endif | |
46 | |
47 #ifndef LIBDRUNTIME | |
48 #define LIBDRUNTIME "gdruntime" | |
49 #endif | |
50 #ifndef LIBDRUNTIME_PROFILE | |
51 #define LIBDRUNTIME_PROFILE LIBDRUNTIME | |
52 #endif | |
53 | |
54 /* What do with libgphobos. */ | |
55 enum phobos_action | |
56 { | |
57 /* libgphobos should not be linked in. */ | |
58 PHOBOS_NOLINK = -1, | |
59 /* libgphobos should be linked in if it is needed. */ | |
60 PHOBOS_DEFAULT = 0, | |
61 /* libgphobos is needed and should be linked in. */ | |
62 PHOBOS_LINK, | |
63 /* libgphobos is needed and should be linked statically. */ | |
64 PHOBOS_STATIC, | |
65 /* libgphobos is needed and should be linked dynamically. */ | |
66 PHOBOS_DYNAMIC, | |
67 }; | |
68 | |
69 static phobos_action phobos_library = PHOBOS_DEFAULT; | |
70 | |
71 /* If true, use the standard D runtime library when linking with | |
72 standard libraries. */ | |
73 static bool need_phobos = true; | |
74 | |
75 /* If true, do load libgphobos.spec even if not needed otherwise. */ | |
76 static bool need_spec = false; | |
77 | |
78 void | |
79 lang_specific_driver (cl_decoded_option **in_decoded_options, | |
80 unsigned int *in_decoded_options_count, | |
81 int *in_added_libraries) | |
82 { | |
83 unsigned int i, j; | |
84 | |
85 /* If nonzero, the user gave us the `-p' or `-pg' flag. */ | |
86 int saw_profile_flag = 0; | |
87 | |
88 /* If true, the user gave `-g'. Used by -debuglib. */ | |
89 bool saw_debug_flag = false; | |
90 | |
91 /* The new argument list will be contained in this. */ | |
92 cl_decoded_option *new_decoded_options; | |
93 | |
94 /* "-lstdc++" if it appears on the command line. */ | |
95 const cl_decoded_option *saw_libcxx = 0; | |
96 | |
97 /* Whether we need the C++ STD library. */ | |
98 bool need_stdcxx = false; | |
99 | |
100 /* True if we saw -static. */ | |
101 bool static_link = false; | |
102 | |
103 /* True if we should add -shared-libgcc to the command-line. */ | |
104 bool shared_libgcc = true; | |
105 | |
106 /* What default library to use instead of phobos. */ | |
107 const char *defaultlib = NULL; | |
108 | |
109 /* What debug library to use instead of phobos. */ | |
110 const char *debuglib = NULL; | |
111 | |
112 /* The total number of arguments with the new stuff. */ | |
113 unsigned int num_args = 1; | |
114 | |
115 /* "-fonly" if it appears on the command line. */ | |
116 const char *only_source_option = 0; | |
117 | |
118 /* Whether the -o option was used. */ | |
119 bool saw_opt_o = false; | |
120 | |
121 /* Whether the -c option was used. Also used for -E, -fsyntax-only, | |
122 in general anything which implies only compilation and not linking. */ | |
123 bool saw_opt_c = false; | |
124 | |
125 /* Whether the -S option was used. */ | |
126 bool saw_opt_S = false; | |
127 | |
128 /* The first input file with an extension of .d. */ | |
129 const char *first_d_file = NULL; | |
130 | |
131 /* The total number of arguments with the new stuff. */ | |
132 unsigned int argc = *in_decoded_options_count; | |
133 | |
134 /* The argument list. */ | |
135 cl_decoded_option *decoded_options = *in_decoded_options; | |
136 | |
137 /* The number of libraries added in. */ | |
138 int added_libraries = *in_added_libraries; | |
139 | |
140 /* An array used to flag each argument that needs a bit set for | |
141 DSOURCE, MATHLIB, WITHTHREAD, WITHLIBC or WITHLIBCXX. */ | |
142 int *args = XCNEWVEC (int, argc); | |
143 | |
144 for (i = 1; i < argc; i++) | |
145 { | |
146 const char *arg = decoded_options[i].arg; | |
147 const int value = decoded_options[i].value; | |
148 | |
149 switch (decoded_options[i].opt_index) | |
150 { | |
151 case OPT_dstartfiles: | |
152 need_spec = true; | |
153 break; | |
154 | |
155 case OPT_nostdlib: | |
156 case OPT_nodefaultlibs: | |
157 phobos_library = PHOBOS_NOLINK; | |
158 break; | |
159 | |
160 case OPT_nophoboslib: | |
161 need_phobos = false; | |
162 args[i] |= SKIPOPT; | |
163 break; | |
164 | |
165 case OPT_fdruntime: | |
166 if (!value) | |
167 need_phobos = false; | |
168 break; | |
169 | |
170 case OPT_defaultlib_: | |
171 if (defaultlib != NULL) | |
172 free (CONST_CAST (char *, defaultlib)); | |
173 if (arg != NULL) | |
174 { | |
175 need_phobos = false; | |
176 args[i] |= SKIPOPT; | |
177 defaultlib = XNEWVEC (char, strlen (arg)); | |
178 strcpy (CONST_CAST (char *, defaultlib), arg); | |
179 } | |
180 break; | |
181 | |
182 case OPT_debuglib_: | |
183 if (debuglib != NULL) | |
184 free (CONST_CAST (char *, debuglib)); | |
185 if (arg != NULL) | |
186 { | |
187 need_phobos = false; | |
188 args[i] |= SKIPOPT; | |
189 debuglib = XNEWVEC (char, strlen (arg)); | |
190 strcpy (CONST_CAST (char *, debuglib), arg); | |
191 } | |
192 break; | |
193 | |
194 case OPT_l: | |
195 if ((strcmp (arg, LIBSTDCXX) == 0) | |
196 || (strcmp (arg, LIBSTDCXX_PROFILE) == 0)) | |
197 { | |
198 args[i] |= WITHLIBCXX; | |
199 need_stdcxx = false; | |
200 } | |
201 /* Unrecognized libraries (e.g. -ltango) may require libphobos. */ | |
202 else if (phobos_library == PHOBOS_DEFAULT) | |
203 phobos_library = PHOBOS_LINK; | |
204 break; | |
205 | |
206 case OPT_pg: | |
207 case OPT_p: | |
208 saw_profile_flag++; | |
209 break; | |
210 | |
211 case OPT_g: | |
212 saw_debug_flag = true; | |
213 break; | |
214 | |
215 case OPT_v: | |
216 /* If they only gave us `-v', don't try to link in libphobos. */ | |
217 if (argc == 2) | |
218 phobos_library = PHOBOS_NOLINK; | |
219 break; | |
220 | |
221 case OPT_x: | |
222 if (phobos_library == PHOBOS_DEFAULT && (strcmp (arg, "d") == 0)) | |
223 phobos_library = PHOBOS_LINK; | |
224 break; | |
225 | |
226 case OPT_Xlinker: | |
227 case OPT_Wl_: | |
228 /* Arguments that go directly to the linker might be .o files | |
229 or something, and so might cause libphobos to be needed. */ | |
230 if (phobos_library == PHOBOS_DEFAULT) | |
231 phobos_library = PHOBOS_LINK; | |
232 break; | |
233 | |
234 case OPT_c: | |
235 case OPT_E: | |
236 case OPT_M: | |
237 case OPT_MM: | |
238 case OPT_fsyntax_only: | |
239 /* Don't specify libaries if we won't link, since that would | |
240 cause a warning. */ | |
241 saw_opt_c = true; | |
242 phobos_library = PHOBOS_NOLINK; | |
243 break; | |
244 | |
245 case OPT_S: | |
246 saw_opt_S = true; | |
247 phobos_library = PHOBOS_NOLINK; | |
248 break; | |
249 | |
250 case OPT_o: | |
251 saw_opt_o = true; | |
252 break; | |
253 | |
254 case OPT_static: | |
255 static_link = true; | |
256 break; | |
257 | |
258 case OPT_static_libgcc: | |
259 shared_libgcc = false; | |
260 break; | |
261 | |
262 case OPT_static_libphobos: | |
263 if (phobos_library != PHOBOS_NOLINK) | |
264 phobos_library = PHOBOS_STATIC; | |
265 args[i] |= SKIPOPT; | |
266 break; | |
267 | |
268 case OPT_shared_libphobos: | |
269 if (phobos_library != PHOBOS_NOLINK) | |
270 phobos_library = PHOBOS_DYNAMIC; | |
271 args[i] |= SKIPOPT; | |
272 break; | |
273 | |
274 case OPT_fonly_: | |
275 args[i] |= SKIPOPT; | |
276 only_source_option = decoded_options[i].orig_option_with_args_text; | |
277 | |
278 if (arg != NULL) | |
279 { | |
280 const char *suffix = strrchr (only_source_option, '.'); | |
281 if (suffix == NULL || strcmp (suffix, ".d") != 0) | |
282 only_source_option = concat (only_source_option, ".d", NULL); | |
283 } | |
284 break; | |
285 | |
286 case OPT_SPECIAL_input_file: | |
287 { | |
288 if (arg[0] == '\0' || arg[1] == '\0') | |
289 continue; | |
290 | |
291 if (phobos_library == PHOBOS_DEFAULT) | |
292 phobos_library = PHOBOS_LINK; | |
293 | |
294 /* Record that this is a D source file. */ | |
295 const char *suffix = strrchr (arg, '.'); | |
296 if (suffix != NULL && strcmp (suffix, ".d") == 0) | |
297 { | |
298 if (first_d_file == NULL) | |
299 first_d_file = arg; | |
300 | |
301 args[i] |= DSOURCE; | |
302 } | |
303 | |
304 /* If this is a C++ source file, we'll need to link | |
305 against libstdc++ library. */ | |
306 if (suffix != NULL | |
307 && (strcmp (suffix, ".cc") == 0 | |
308 || (strcmp (suffix, ".cpp") == 0) | |
309 || (strcmp (suffix, ".c++") == 0))) | |
310 need_stdcxx = true; | |
311 | |
312 break; | |
313 } | |
314 } | |
315 } | |
316 | |
317 /* There's no point adding -shared-libgcc if we don't have a shared | |
318 libgcc. */ | |
319 #ifndef ENABLE_SHARED_LIBGCC | |
320 shared_libgcc = false; | |
321 #endif | |
322 | |
323 /* Make sure to have room for the trailing NULL argument. | |
324 - needstdcxx might add `-lstdcxx' | |
325 - libphobos adds `-Bstatic -lphobos -ldruntime -Bdynamic' | |
326 - only_source adds 1 more arg, also maybe add `-o'. */ | |
327 num_args = argc + need_stdcxx + shared_libgcc + need_phobos * 4 + 2; | |
328 new_decoded_options = XNEWVEC (cl_decoded_option, num_args); | |
329 | |
330 i = 0; | |
331 j = 0; | |
332 | |
333 /* Copy the 0th argument, i.e., the name of the program itself. */ | |
334 new_decoded_options[j++] = decoded_options[i++]; | |
335 | |
336 /* NOTE: We start at 1 now, not 0. */ | |
337 while (i < argc) | |
338 { | |
339 if (args[i] & SKIPOPT) | |
340 { | |
341 ++i; | |
342 continue; | |
343 } | |
344 | |
345 new_decoded_options[j] = decoded_options[i]; | |
346 | |
347 if (!saw_libcxx && (args[i] & WITHLIBCXX)) | |
348 { | |
349 --j; | |
350 saw_libcxx = &decoded_options[i]; | |
351 } | |
352 | |
353 if (args[i] & DSOURCE) | |
354 { | |
355 if (only_source_option) | |
356 --j; | |
357 } | |
358 | |
359 i++; | |
360 j++; | |
361 } | |
362 | |
363 if (only_source_option) | |
364 { | |
365 const char *only_source_arg = only_source_option + 7; | |
366 generate_option (OPT_fonly_, only_source_arg, 1, CL_DRIVER, | |
367 &new_decoded_options[j]); | |
368 j++; | |
369 | |
370 generate_option_input_file (only_source_arg, | |
371 &new_decoded_options[j++]); | |
372 } | |
373 | |
374 /* If no reason to link against libphobos library, then don't add it. */ | |
375 if (phobos_library == PHOBOS_DEFAULT) | |
376 phobos_library = PHOBOS_NOLINK; | |
377 | |
378 /* If we didn't see a -o option, add one. This is because we need the | |
379 driver to pass all .d files to the D compiler. Without a -o option | |
380 the driver will invoke the compiler separately for each input file. */ | |
381 if (first_d_file != NULL && !saw_opt_o) | |
382 { | |
383 if (saw_opt_c || saw_opt_S) | |
384 { | |
385 const char *base = lbasename (first_d_file); | |
386 int baselen = strlen (base) - 2; | |
387 char *out = XNEWVEC (char, baselen + 3); | |
388 | |
389 memcpy (out, base, baselen); | |
390 /* The driver will convert .o to some other suffix if appropriate. */ | |
391 out[baselen] = '.'; | |
392 if (saw_opt_S) | |
393 out[baselen + 1] = 's'; | |
394 else | |
395 out[baselen + 1] = 'o'; | |
396 out[baselen + 2] = '\0'; | |
397 generate_option (OPT_o, out, 1, CL_DRIVER, | |
398 &new_decoded_options[j]); | |
399 } | |
400 else | |
401 { | |
402 /* Wouldn't be necessary if the driver converted .out also. */ | |
403 const char *out = NULL; | |
404 | |
405 #ifdef TARGET_EXECUTABLE_SUFFIX | |
406 if (TARGET_EXECUTABLE_SUFFIX[0] != 0) | |
407 out = "a" TARGET_EXECUTABLE_SUFFIX; | |
408 #endif | |
409 if (out == NULL) | |
410 out = "a.out"; | |
411 | |
412 generate_option (OPT_o, out, 1, CL_DRIVER, | |
413 &new_decoded_options[j]); | |
414 } | |
415 j++; | |
416 } | |
417 | |
418 /* Add `-lgphobos' if we haven't already done so. */ | |
419 if (phobos_library != PHOBOS_NOLINK && need_phobos) | |
420 { | |
421 /* Default to static linking. */ | |
422 if (phobos_library != PHOBOS_DYNAMIC) | |
423 phobos_library = PHOBOS_STATIC; | |
424 | |
425 #ifdef HAVE_LD_STATIC_DYNAMIC | |
426 if (phobos_library == PHOBOS_DYNAMIC && static_link) | |
427 { | |
428 generate_option (OPT_Wl_, LD_DYNAMIC_OPTION, 1, CL_DRIVER, | |
429 &new_decoded_options[j]); | |
430 j++; | |
431 } | |
432 else if (phobos_library == PHOBOS_STATIC && !static_link) | |
433 { | |
434 generate_option (OPT_Wl_, LD_STATIC_OPTION, 1, CL_DRIVER, | |
435 &new_decoded_options[j]); | |
436 j++; | |
437 } | |
438 #endif | |
439 | |
440 generate_option (OPT_l, | |
441 saw_profile_flag ? LIBPHOBOS_PROFILE : LIBPHOBOS, 1, | |
442 CL_DRIVER, &new_decoded_options[j]); | |
443 added_libraries++; | |
444 j++; | |
445 generate_option (OPT_l, | |
446 saw_profile_flag ? LIBDRUNTIME_PROFILE : LIBDRUNTIME, 1, | |
447 CL_DRIVER, &new_decoded_options[j]); | |
448 added_libraries++; | |
449 j++; | |
450 | |
451 #ifdef HAVE_LD_STATIC_DYNAMIC | |
452 if (phobos_library == PHOBOS_DYNAMIC && static_link) | |
453 { | |
454 generate_option (OPT_Wl_, LD_STATIC_OPTION, 1, CL_DRIVER, | |
455 &new_decoded_options[j]); | |
456 j++; | |
457 } | |
458 else if (phobos_library == PHOBOS_STATIC && !static_link) | |
459 { | |
460 generate_option (OPT_Wl_, LD_DYNAMIC_OPTION, 1, CL_DRIVER, | |
461 &new_decoded_options[j]); | |
462 j++; | |
463 } | |
464 #endif | |
465 } | |
466 else if (saw_debug_flag && debuglib) | |
467 { | |
468 generate_option (OPT_l, debuglib, 1, CL_DRIVER, | |
469 &new_decoded_options[j++]); | |
470 added_libraries++; | |
471 } | |
472 else if (defaultlib) | |
473 { | |
474 generate_option (OPT_l, defaultlib, 1, CL_DRIVER, | |
475 &new_decoded_options[j++]); | |
476 added_libraries++; | |
477 } | |
478 | |
479 if (saw_libcxx) | |
480 new_decoded_options[j++] = *saw_libcxx; | |
481 else if (need_stdcxx) | |
482 { | |
483 generate_option (OPT_l, | |
484 (saw_profile_flag | |
485 ? LIBSTDCXX_PROFILE | |
486 : LIBSTDCXX), | |
487 1, CL_DRIVER, &new_decoded_options[j++]); | |
488 added_libraries++; | |
489 } | |
490 | |
491 if (shared_libgcc && !static_link) | |
492 { | |
493 generate_option (OPT_shared_libgcc, NULL, 1, CL_DRIVER, | |
494 &new_decoded_options[j++]); | |
495 } | |
496 | |
497 *in_decoded_options_count = j; | |
498 *in_decoded_options = new_decoded_options; | |
499 *in_added_libraries = added_libraries; | |
500 } | |
501 | |
502 /* Called before linking. Returns 0 on success and -1 on failure. */ | |
503 | |
504 int | |
505 lang_specific_pre_link (void) | |
506 { | |
507 if ((phobos_library != PHOBOS_NOLINK && need_phobos) || need_spec) | |
508 do_spec ("%:include(libgphobos.spec)"); | |
509 | |
510 return 0; | |
511 } | |
512 | |
513 /* Number of extra output files that lang_specific_pre_link may generate. */ | |
514 | |
515 int lang_specific_extra_outfiles = 0; /* Not used for D. */ | |
516 |