2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001 Free Software Foundation, Inc.
4 Contributed by Per Bothner, 1994-95.
5 Based on CCCP program by Paul Rubin, June 1986
6 Adapted to ANSI C, Richard Stallman, Jan 1987
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
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.
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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 #include "cppdefault.h"
33 /* Predefined symbols, built-in macros, and the default include path. */
35 #ifndef GET_ENV_PATH_LIST
36 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
39 /* Windows does not natively support inodes, and neither does MSDOS.
40 Cygwin's emulation can generate non-unique inodes, so don't use it.
41 VMS has non-numeric inodes. */
43 # define INO_T_EQ(a, b) (!memcmp (&(a), &(b), sizeof (a)))
45 # if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
46 # define INO_T_EQ(a, b) 0
48 # define INO_T_EQ(a, b) ((a) == (b))
52 /* Internal structures and prototypes. */
54 /* A `struct pending_option' remembers one -D, -A, -U, -include, or
57 typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
60 struct pending_option *next;
62 cl_directive_handler handler;
65 /* The `pending' structure accumulates all the options that are not
66 actually processed until we hit cpp_start_read. It consists of
67 several lists, one for each type of option. We keep both head and
68 tail pointers for quick insertion. */
71 struct pending_option *directive_head, *directive_tail;
73 struct search_path *quote_head, *quote_tail;
74 struct search_path *brack_head, *brack_tail;
75 struct search_path *systm_head, *systm_tail;
76 struct search_path *after_head, *after_tail;
78 struct pending_option *imacros_head, *imacros_tail;
79 struct pending_option *include_head, *include_tail;
83 #define APPEND(pend, list, elt) \
84 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
85 else (pend)->list##_tail->next = (elt); \
86 (pend)->list##_tail = (elt); \
89 #define APPEND(pend, list, elt) \
90 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
91 else (pend)->list/**/_tail->next = (elt); \
92 (pend)->list/**/_tail = (elt); \
96 static void print_help PARAMS ((void));
97 static void path_include PARAMS ((cpp_reader *,
99 static void init_library PARAMS ((void));
100 static void init_builtins PARAMS ((cpp_reader *));
101 static void append_include_chain PARAMS ((cpp_reader *,
103 static struct search_path * remove_dup_dir PARAMS ((cpp_reader *,
104 struct search_path *));
105 static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *,
106 struct search_path *));
107 static void merge_include_chains PARAMS ((cpp_reader *));
108 static void do_includes PARAMS ((cpp_reader *,
109 struct pending_option *,
111 static void set_lang PARAMS ((cpp_reader *, enum c_lang));
112 static void init_dependency_output PARAMS ((cpp_reader *));
113 static void init_standard_includes PARAMS ((cpp_reader *));
114 static void new_pending_directive PARAMS ((struct cpp_pending *,
116 cl_directive_handler));
117 static void output_deps PARAMS ((cpp_reader *));
118 static int parse_option PARAMS ((const char *));
120 /* Fourth argument to append_include_chain: chain to use.
121 Note it's never asked to append to the quote chain. */
122 enum { BRACKET = 0, SYSTEM, AFTER };
124 /* If we have designated initializers (GCC >2.7) these tables can be
125 initialized, constant data. Otherwise, they have to be filled in at
127 #if HAVE_DESIGNATED_INITIALIZERS
129 #define init_trigraph_map() /* Nothing. */
130 #define TRIGRAPH_MAP \
131 __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = {
134 #define s(p, v) [p] = v,
138 #define TRIGRAPH_MAP U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
139 static void init_trigraph_map PARAMS ((void)) { \
140 unsigned char *x = _cpp_trigraph_map;
143 #define s(p, v) x[p] = v;
148 s('=', '#') s(')', ']') s('!', '|')
149 s('(', '[') s('\'', '^') s('>', '}')
150 s('/', '\\') s('<', '{') s('-', '~')
157 /* Given a colon-separated list of file names PATH,
158 add all the names to the search path for include files. */
161 path_include (pfile, list, path)
172 /* Find the end of this name. */
174 while (*q != 0 && *q != PATH_SEPARATOR) q++;
177 /* An empty name in the path stands for the current directory. */
178 name = (char *) xmalloc (2);
184 /* Otherwise use the directory that is named. */
185 name = (char *) xmalloc (q - p + 1);
186 memcpy (name, p, q - p);
190 append_include_chain (pfile, name, path, 0);
192 /* Advance past this name. */
200 /* Append DIR to include path PATH. DIR must be permanently allocated
203 append_include_chain (pfile, dir, path, cxx_aware)
207 int cxx_aware ATTRIBUTE_UNUSED;
209 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
210 struct search_path *new;
216 _cpp_simplify_pathname (dir);
219 /* Dirs that don't exist are silently ignored. */
221 cpp_notice_from_errno (pfile, dir);
222 else if (CPP_OPTION (pfile, verbose))
223 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
227 if (!S_ISDIR (st.st_mode))
229 cpp_notice (pfile, "%s: Not a directory", dir);
234 if (len > pfile->max_include_len)
235 pfile->max_include_len = len;
237 new = (struct search_path *) xmalloc (sizeof (struct search_path));
240 new->ino = st.st_ino;
241 new->dev = st.st_dev;
242 /* Both systm and after include file lists should be treated as system
243 include files since these two lists are really just a concatenation
244 of one "system" list. */
245 if (path == SYSTEM || path == AFTER)
246 #ifdef NO_IMPLICIT_EXTERN_C
249 new->sysp = cxx_aware ? 1 : 2;
253 new->name_map = NULL;
258 case BRACKET: APPEND (pend, brack, new); break;
259 case SYSTEM: APPEND (pend, systm, new); break;
260 case AFTER: APPEND (pend, after, new); break;
264 /* Handle a duplicated include path. PREV is the link in the chain
265 before the duplicate. The duplicate is removed from the chain and
266 freed. Returns PREV. */
267 static struct search_path *
268 remove_dup_dir (pfile, prev)
270 struct search_path *prev;
272 struct search_path *cur = prev->next;
274 if (CPP_OPTION (pfile, verbose))
275 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
277 prev->next = cur->next;
278 free ((PTR) cur->name);
284 /* Remove duplicate directories from a chain. Returns the tail of the
285 chain, or NULL if the chain is empty. This algorithm is quadratic
286 in the number of -I switches, which is acceptable since there
287 aren't usually that many of them. */
288 static struct search_path *
289 remove_dup_dirs (pfile, head)
291 struct search_path *head;
293 struct search_path *prev = NULL, *cur, *other;
295 for (cur = head; cur; cur = cur->next)
297 for (other = head; other != cur; other = other->next)
298 if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
300 if (cur->sysp && !other->sysp)
303 "changing search order for system directory \"%s\"",
305 if (strcmp (cur->name, other->name))
307 " as it is the same as non-system directory \"%s\"",
311 " as it has already been specified as a non-system directory");
313 cur = remove_dup_dir (pfile, prev);
322 /* Merge the four include chains together in the order quote, bracket,
323 system, after. Remove duplicate dirs (as determined by
324 INO_T_EQ()). The system_include and after_include chains are never
325 referred to again after this function; all access is through the
326 bracket_include path.
328 For the future: Check if the directory is empty (but
329 how?) and possibly preload the include hash. */
332 merge_include_chains (pfile)
335 struct search_path *quote, *brack, *systm, *qtail;
337 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
339 quote = pend->quote_head;
340 brack = pend->brack_head;
341 systm = pend->systm_head;
342 qtail = pend->quote_tail;
344 /* Paste together bracket, system, and after include chains. */
346 pend->systm_tail->next = pend->after_head;
348 systm = pend->after_head;
351 pend->brack_tail->next = systm;
355 /* This is a bit tricky. First we drop dupes from the quote-include
356 list. Then we drop dupes from the bracket-include list.
357 Finally, if qtail and brack are the same directory, we cut out
358 brack and move brack up to point to qtail.
360 We can't just merge the lists and then uniquify them because
361 then we may lose directories from the <> search path that should
362 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
363 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
364 -Ibar -I- -Ifoo -Iquux. */
366 remove_dup_dirs (pfile, brack);
367 qtail = remove_dup_dirs (pfile, quote);
373 /* If brack == qtail, remove brack as it's simpler. */
374 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
375 brack = remove_dup_dir (pfile, qtail);
380 CPP_OPTION (pfile, quote_include) = quote;
381 CPP_OPTION (pfile, bracket_include) = brack;
384 /* Sets internal flags correctly for a given language, and defines
385 macros if necessary. */
392 char extended_numbers;
394 char dollars_in_ident;
395 char cplusplus_comments;
399 /* ??? Enable $ in identifiers in assembly? */
400 static const struct lang_flags lang_defaults[] =
401 { /* c99 objc c++ xnum trig dollar c++comm digr */
402 /* GNUC89 */ { 0, 0, 0, 1, 0, 1, 1, 1 },
403 /* GNUC99 */ { 1, 0, 0, 1, 0, 1, 1, 1 },
404 /* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0 },
405 /* STDC94 */ { 0, 0, 0, 0, 1, 0, 0, 1 },
406 /* STDC99 */ { 1, 0, 0, 1, 1, 0, 1, 1 },
407 /* GNUCXX */ { 0, 0, 1, 1, 0, 1, 1, 1 },
408 /* CXX98 */ { 0, 0, 1, 1, 1, 0, 1, 1 },
409 /* OBJC */ { 0, 1, 0, 1, 0, 1, 1, 1 },
410 /* OBJCXX */ { 0, 1, 1, 1, 0, 1, 1, 1 },
411 /* ASM */ { 0, 0, 0, 1, 0, 0, 1, 0 }
415 set_lang (pfile, lang)
419 const struct lang_flags *l = &lang_defaults[(int) lang];
421 CPP_OPTION (pfile, lang) = lang;
423 CPP_OPTION (pfile, c99) = l->c99;
424 CPP_OPTION (pfile, objc) = l->objc;
425 CPP_OPTION (pfile, cplusplus) = l->cplusplus;
426 CPP_OPTION (pfile, extended_numbers) = l->extended_numbers;
427 CPP_OPTION (pfile, trigraphs) = l->trigraphs;
428 CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident;
429 CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments;
430 CPP_OPTION (pfile, digraphs) = l->digraphs;
434 static int opt_comp PARAMS ((const void *, const void *));
436 /* Run-time sorting of options array. */
441 return strcmp (((struct cl_option *) p1)->opt_text,
442 ((struct cl_option *) p2)->opt_text);
446 /* init initializes library global state. It might not need to
447 do anything depending on the platform and compiler. */
452 static int initialized = 0;
459 /* For non-ASCII hosts, the cl_options array needs to be sorted at
461 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
464 /* Set up the trigraph map. This doesn't need to do anything if
465 we were compiled with a compiler that supports C99 designated
467 init_trigraph_map ();
471 /* Initialize a cpp_reader structure. */
473 cpp_create_reader (table, lang)
477 struct spec_nodes *s;
480 /* Initialise this instance of the library if it hasn't been already. */
483 pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
485 set_lang (pfile, lang);
486 CPP_OPTION (pfile, warn_import) = 1;
487 CPP_OPTION (pfile, discard_comments) = 1;
488 CPP_OPTION (pfile, show_column) = 1;
489 CPP_OPTION (pfile, tabstop) = 8;
490 CPP_OPTION (pfile, operator_names) = 1;
492 CPP_OPTION (pfile, pending) =
493 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
495 /* It's simplest to just create this struct whether or not it will
497 pfile->deps = deps_init ();
499 /* Initialize lexer state. */
500 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
502 /* Indicate date and time not yet calculated. */
503 pfile->date.type = CPP_EOF;
505 /* Initialise the base context. */
506 pfile->context = &pfile->base_context;
507 pfile->base_context.macro = 0;
508 pfile->base_context.prev = pfile->base_context.next = 0;
510 /* Identifier pool initially 8K. Unaligned, permanent pool. */
511 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
513 /* Argument pool initially 8K. Aligned, temporary pool. */
514 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
516 /* Macro pool initially 8K. Aligned, permanent pool. */
517 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
519 /* Initialise the buffer obstack. */
520 gcc_obstack_init (&pfile->buffer_ob);
522 /* Initialise the hashtable. */
523 _cpp_init_hashtable (pfile, table);
525 _cpp_init_directives (pfile);
526 _cpp_init_includes (pfile);
527 _cpp_init_internal_pragmas (pfile);
529 /* Initialize the special nodes. */
530 s = &pfile->spec_nodes;
531 s->n_L = cpp_lookup (pfile, DSC("L"));
532 s->n_defined = cpp_lookup (pfile, DSC("defined"));
533 s->n_true = cpp_lookup (pfile, DSC("true"));
534 s->n_false = cpp_lookup (pfile, DSC("false"));
535 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
536 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
537 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
538 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
539 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
544 /* Free resources used by PFILE. Accessing PFILE after this function
545 returns leads to undefined behaviour. */
551 struct search_path *dir, *dirn;
552 cpp_context *context, *contextn;
554 while (CPP_BUFFER (pfile) != NULL)
555 cpp_pop_buffer (pfile);
557 if (pfile->macro_buffer)
559 free ((PTR) pfile->macro_buffer);
560 pfile->macro_buffer = NULL;
561 pfile->macro_buffer_len = 0;
564 deps_free (pfile->deps);
565 obstack_free (&pfile->buffer_ob, 0);
567 _cpp_destroy_hashtable (pfile);
568 _cpp_cleanup_includes (pfile);
569 _cpp_free_lookaheads (pfile);
571 _cpp_free_pool (&pfile->ident_pool);
572 _cpp_free_pool (&pfile->macro_pool);
573 _cpp_free_pool (&pfile->argument_pool);
575 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
578 free ((PTR) dir->name);
582 for (context = pfile->base_context.next; context; context = contextn)
584 contextn = context->next;
588 result = pfile->errors;
595 /* This structure defines one built-in identifier. A node will be
596 entered in the hash table under the name NAME, with value VALUE (if
597 any). If flags has OPERATOR, the node's operator field is used; if
598 flags has BUILTIN the node's builtin field is used. Macros that are
599 known at build time should not be flagged BUILTIN, as then they do
600 not appear in macro dumps with e.g. -dM or -dD.
602 Two values are not compile time constants, so we tag
603 them in the FLAGS field instead:
604 VERS value is the global version_string, quoted
605 ULP value is the global user_label_prefix
607 Also, macros with CPLUS set in the flags field are entered only for C++. */
613 unsigned char builtin;
614 unsigned char operator;
615 unsigned short flags;
622 #define OPERATOR 0x10
624 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
625 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
626 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
627 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
628 static const struct builtin builtin_array[] =
630 B("__TIME__", BT_TIME),
631 B("__DATE__", BT_DATE),
632 B("__FILE__", BT_FILE),
633 B("__BASE_FILE__", BT_BASE_FILE),
634 B("__LINE__", BT_SPECLINE),
635 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
637 X("__VERSION__", VERS),
638 X("__USER_LABEL_PREFIX__", ULP),
639 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
640 C("__HAVE_BUILTIN_SETJMP__", "1"),
641 #ifndef NO_BUILTIN_SIZE_TYPE
642 C("__SIZE_TYPE__", SIZE_TYPE),
644 #ifndef NO_BUILTIN_PTRDIFF_TYPE
645 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
647 #ifndef NO_BUILTIN_WCHAR_TYPE
648 C("__WCHAR_TYPE__", WCHAR_TYPE),
650 #ifndef NO_BUILTIN_WINT_TYPE
651 C("__WINT_TYPE__", WINT_TYPE),
653 #ifdef STDC_0_IN_SYSTEM_HEADERS
654 B("__STDC__", BT_STDC),
659 /* Named operators known to the preprocessor. These cannot be #defined
660 and always have their stated meaning. They are treated like normal
661 identifiers except for the type code and the meaning. Most of them
662 are only for C++ (but see iso646.h). */
663 O("and", CPP_AND_AND, CPLUS),
664 O("and_eq", CPP_AND_EQ, CPLUS),
665 O("bitand", CPP_AND, CPLUS),
666 O("bitor", CPP_OR, CPLUS),
667 O("compl", CPP_COMPL, CPLUS),
668 O("not", CPP_NOT, CPLUS),
669 O("not_eq", CPP_NOT_EQ, CPLUS),
670 O("or", CPP_OR_OR, CPLUS),
671 O("or_eq", CPP_OR_EQ, CPLUS),
672 O("xor", CPP_XOR, CPLUS),
673 O("xor_eq", CPP_XOR_EQ, CPLUS)
679 #define builtin_array_end \
680 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
682 /* Subroutine of cpp_start_read; reads the builtins table above and
683 enters the macros into the hash table. */
685 init_builtins (pfile)
688 const struct builtin *b;
690 for(b = builtin_array; b < builtin_array_end; b++)
692 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
695 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
698 if (b->flags & (OPERATOR | BUILTIN))
700 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
701 if (b->flags & OPERATOR)
703 hp->flags |= NODE_OPERATOR;
704 hp->value.operator = b->operator;
709 hp->flags |= NODE_BUILTIN | NODE_WARN;
710 hp->value.builtin = b->builtin;
713 else /* A standard macro of some kind. */
720 /* Allocate enough space for 'name "value"\n\0'. */
721 str = alloca (b->len + strlen (version_string) + 5);
722 sprintf (str, "%s \"%s\"\n", b->name, version_string);
727 val = CPP_OPTION (pfile, user_label_prefix);
731 /* Allocate enough space for "name value\n\0". */
732 str = alloca (b->len + strlen (val) + 3);
733 sprintf(str, "%s %s\n", b->name, val);
736 _cpp_define_builtin (pfile, str);
740 if (CPP_OPTION (pfile, cplusplus))
742 _cpp_define_builtin (pfile, "__cplusplus 1");
743 if (SUPPORTS_ONE_ONLY)
744 _cpp_define_builtin (pfile, "__GXX_WEAK__ 1");
746 _cpp_define_builtin (pfile, "__GXX_WEAK__ 0");
748 if (CPP_OPTION (pfile, objc))
749 _cpp_define_builtin (pfile, "__OBJC__ 1");
751 if (CPP_OPTION (pfile, lang) == CLK_STDC94)
752 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
753 else if (CPP_OPTION (pfile, c99))
754 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
756 if (CPP_OPTION (pfile, lang) == CLK_STDC89
757 || CPP_OPTION (pfile, lang) == CLK_STDC94
758 || CPP_OPTION (pfile, lang) == CLK_STDC99)
759 _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1");
760 else if (CPP_OPTION (pfile, lang) == CLK_ASM)
761 _cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
768 #undef builtin_array_end
770 /* And another subroutine. This one sets up the standard include path. */
772 init_standard_includes (pfile)
776 const struct default_include *p;
777 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
779 /* Several environment variables may add to the include search path.
780 CPATH specifies an additional list of directories to be searched
781 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
782 etc. specify an additional list of directories to be searched as
783 if specified with -isystem, for the language indicated. */
785 GET_ENV_PATH_LIST (path, "CPATH");
786 if (path != 0 && *path != 0)
787 path_include (pfile, path, BRACKET);
789 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
792 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
795 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
798 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
801 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
804 if (path != 0 && *path != 0)
805 path_include (pfile, path, SYSTEM);
807 /* Search "translated" versions of GNU directories.
808 These have /usr/local/lib/gcc... replaced by specd_prefix. */
809 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
811 /* Remove the `include' from /usr/local/lib/gcc.../include.
812 GCC_INCLUDE_DIR will always end in /include. */
813 int default_len = cpp_GCC_INCLUDE_DIR_len;
814 char *default_prefix = (char *) alloca (default_len + 1);
815 int specd_len = strlen (specd_prefix);
817 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
818 default_prefix[default_len] = '\0';
820 for (p = cpp_include_defaults; p->fname; p++)
822 /* Some standard dirs are only for C++. */
824 || (CPP_OPTION (pfile, cplusplus)
825 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
827 /* Does this dir start with the prefix? */
828 if (!memcmp (p->fname, default_prefix, default_len))
830 /* Yes; change prefix and add to search list. */
831 int flen = strlen (p->fname);
832 int this_len = specd_len + flen - default_len;
833 char *str = (char *) xmalloc (this_len + 1);
834 memcpy (str, specd_prefix, specd_len);
835 memcpy (str + specd_len,
836 p->fname + default_len,
837 flen - default_len + 1);
839 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
845 /* Search ordinary names for GNU include directories. */
846 for (p = cpp_include_defaults; p->fname; p++)
848 /* Some standard dirs are only for C++. */
850 || (CPP_OPTION (pfile, cplusplus)
851 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
853 char *str = xstrdup (update_path (p->fname, p->component));
854 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
859 /* Handles -imacro and -include from the command line. */
861 do_includes (pfile, p, scan)
863 struct pending_option *p;
868 struct pending_option *q;
870 /* Don't handle if -fpreprocessed. Later: maybe update this to
871 use the #include "" search path if cpp_read_file fails. */
872 if (CPP_OPTION (pfile, preprocessed))
873 cpp_error (pfile, "-include and -imacros cannot be used with -fpreprocessed");
877 header.type = CPP_STRING;
878 header.val.str.text = (const unsigned char *) p->arg;
879 header.val.str.len = strlen (p->arg);
880 if (_cpp_execute_include (pfile, &header, IT_CMDLINE) && scan)
881 cpp_scan_buffer_nooutput (pfile, 0);
889 /* This is called after options have been processed. Setup for
890 processing input from the file named FNAME, or stdin if it is the
891 empty string. Return 1 on success, 0 on failure. */
893 cpp_start_read (pfile, fname)
897 struct pending_option *p, *q;
899 /* Set up the include search path now. */
900 if (! CPP_OPTION (pfile, no_standard_includes))
901 init_standard_includes (pfile);
903 merge_include_chains (pfile);
905 /* With -v, print the list of dirs to search. */
906 if (CPP_OPTION (pfile, verbose))
908 struct search_path *l;
909 fprintf (stderr, _("#include \"...\" search starts here:\n"));
910 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
912 if (l == CPP_OPTION (pfile, bracket_include))
913 fprintf (stderr, _("#include <...> search starts here:\n"));
914 fprintf (stderr, " %s\n", l->name);
916 fprintf (stderr, _("End of search list.\n"));
919 if (CPP_OPTION (pfile, print_deps))
920 /* Set the default target (if there is none already). */
921 deps_add_default_target (pfile->deps, fname);
923 /* Open the main input file. This must be done early, so we have a
924 buffer to stand on. */
925 if (!_cpp_read_file (pfile, fname))
928 /* If already preprocessed, don't install __LINE__, etc., and ignore
929 command line definitions and assertions. Handle -U's, -D's and
930 -A's in the order they were seen. */
931 if (! CPP_OPTION (pfile, preprocessed))
932 init_builtins (pfile);
934 p = CPP_OPTION (pfile, pending)->directive_head;
937 if (! CPP_OPTION (pfile, preprocessed))
938 (*p->handler) (pfile, p->arg);
944 /* The -imacros files can be scanned now, but the -include files
945 have to be pushed onto the buffer stack and processed later,
946 otherwise cppmain.c won't see the tokens. include_head was built
947 up as a stack, and popping this stack onto the buffer stack means
948 we preserve the order of the command line. */
949 do_includes (pfile, CPP_OPTION (pfile, pending)->imacros_head, 1);
950 do_includes (pfile, CPP_OPTION (pfile, pending)->include_head, 0);
952 free (CPP_OPTION (pfile, pending));
953 CPP_OPTION (pfile, pending) = NULL;
958 /* Use mkdeps.c to output dependency information. */
963 /* Stream on which to print the dependency information. */
964 FILE *deps_stream = 0;
965 const char *deps_mode = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
967 if (CPP_OPTION (pfile, deps_file) == 0)
968 deps_stream = stdout;
971 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
972 if (deps_stream == 0)
974 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
979 deps_write (pfile->deps, deps_stream, 72);
981 if (CPP_OPTION (pfile, deps_phony_targets))
982 deps_phony_targets (pfile->deps, deps_stream);
984 /* Don't close stdout. */
985 if (CPP_OPTION (pfile, deps_file))
987 if (ferror (deps_stream) || fclose (deps_stream) != 0)
988 cpp_fatal (pfile, "I/O error on output");
992 /* This is called at the end of preprocessing. It pops the
993 last buffer and writes dependency output. It should also
994 clear macro definitions, such that you could call cpp_start_read
995 with a new filename to restart processing. */
1000 if (CPP_BUFFER (pfile))
1002 cpp_ice (pfile, "buffers still stacked in cpp_finish");
1003 while (CPP_BUFFER (pfile))
1004 cpp_pop_buffer (pfile);
1007 /* Don't write the deps file if preprocessing has failed. */
1008 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1009 output_deps (pfile);
1011 /* Report on headers that could use multiple include guards. */
1012 if (CPP_OPTION (pfile, print_include_names))
1013 _cpp_report_missing_guards (pfile);
1017 new_pending_directive (pend, text, handler)
1018 struct cpp_pending *pend;
1020 cl_directive_handler handler;
1022 struct pending_option *o = (struct pending_option *)
1023 xmalloc (sizeof (struct pending_option));
1027 o->handler = handler;
1028 APPEND (pend, directive, o);
1031 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1032 I.e. a const string initializer with parens around it. That is
1033 what N_("string") resolves to, so we make no_* be macros instead. */
1034 #define no_arg N_("Argument missing after %s")
1035 #define no_ass N_("Assertion missing after %s")
1036 #define no_dir N_("Directory name missing after %s")
1037 #define no_fil N_("File name missing after %s")
1038 #define no_mac N_("Macro name missing after %s")
1039 #define no_pth N_("Path name missing after %s")
1040 #define no_num N_("Number missing after %s")
1041 #define no_tgt N_("Target missing after %s")
1043 /* This is the list of all command line options, with the leading
1044 "-" removed. It must be sorted in ASCII collating order. */
1045 #define COMMAND_LINE_OPTIONS \
1046 DEF_OPT("$", 0, OPT_dollar) \
1047 DEF_OPT("+", 0, OPT_plus) \
1048 DEF_OPT("-help", 0, OPT__help) \
1049 DEF_OPT("-target-help", 0, OPT_target__help) \
1050 DEF_OPT("-version", 0, OPT__version) \
1051 DEF_OPT("A", no_ass, OPT_A) \
1052 DEF_OPT("C", 0, OPT_C) \
1053 DEF_OPT("D", no_mac, OPT_D) \
1054 DEF_OPT("H", 0, OPT_H) \
1055 DEF_OPT("I", no_dir, OPT_I) \
1056 DEF_OPT("M", 0, OPT_M) \
1057 DEF_OPT("MD", no_fil, OPT_MD) \
1058 DEF_OPT("MF", no_fil, OPT_MF) \
1059 DEF_OPT("MG", 0, OPT_MG) \
1060 DEF_OPT("MM", 0, OPT_MM) \
1061 DEF_OPT("MMD", no_fil, OPT_MMD) \
1062 DEF_OPT("MP", 0, OPT_MP) \
1063 DEF_OPT("MQ", no_tgt, OPT_MQ) \
1064 DEF_OPT("MT", no_tgt, OPT_MT) \
1065 DEF_OPT("P", 0, OPT_P) \
1066 DEF_OPT("U", no_mac, OPT_U) \
1067 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1068 DEF_OPT("d", no_arg, OPT_d) \
1069 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1070 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1071 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1072 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1073 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1074 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1075 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1076 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1077 DEF_OPT("h", 0, OPT_h) \
1078 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1079 DEF_OPT("imacros", no_fil, OPT_imacros) \
1080 DEF_OPT("include", no_fil, OPT_include) \
1081 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1082 DEF_OPT("isystem", no_dir, OPT_isystem) \
1083 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1084 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1085 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1086 DEF_OPT("lang-c", 0, OPT_lang_c) \
1087 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1088 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1089 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1090 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1091 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1092 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1093 DEF_OPT("o", no_fil, OPT_o) \
1094 DEF_OPT("pedantic", 0, OPT_pedantic) \
1095 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1096 DEF_OPT("remap", 0, OPT_remap) \
1097 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1098 DEF_OPT("std=c89", 0, OPT_std_c89) \
1099 DEF_OPT("std=c99", 0, OPT_std_c99) \
1100 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1101 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1102 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1103 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1104 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1105 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1106 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1107 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1108 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1109 DEF_OPT("v", 0, OPT_v) \
1110 DEF_OPT("version", 0, OPT_version) \
1111 DEF_OPT("w", 0, OPT_w)
1113 #define DEF_OPT(text, msg, code) code,
1116 COMMAND_LINE_OPTIONS
1123 const char *opt_text;
1126 enum opt_code opt_code;
1129 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1131 static struct cl_option cl_options[] =
1133 static const struct cl_option cl_options[] =
1136 COMMAND_LINE_OPTIONS
1139 #undef COMMAND_LINE_OPTIONS
1141 /* Perform a binary search to find which, if any, option the given
1142 command-line matches. Returns its index in the option array,
1143 negative on failure. Complications arise since some options can be
1144 suffixed with an argument, and multiple complete matches can occur,
1145 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to
1146 accept options beginning with -W that we do not recognise, but not
1147 to swallow any subsequent command line argument; this is handled as
1148 special cases in cpp_handle_option. */
1150 parse_option (input)
1153 unsigned int md, mn, mx;
1164 opt_len = cl_options[md].opt_len;
1165 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1173 if (input[opt_len] == '\0')
1175 /* We were passed more text. If the option takes an argument,
1176 we may match a later option or we may have been passed the
1177 argument. The longest possible option match succeeds.
1178 If the option takes no arguments we have not matched and
1179 continue the search (e.g. input="stdc++" match was "stdc"). */
1181 if (cl_options[md].msg)
1183 /* Scan forwards. If we get an exact match, return it.
1184 Otherwise, return the longest option-accepting match.
1185 This loops no more than twice with current options. */
1187 for (; mn < (unsigned int) N_OPTS; mn++)
1189 opt_len = cl_options[mn].opt_len;
1190 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1192 if (input[opt_len] == '\0')
1194 if (cl_options[mn].msg)
1205 /* Handle one command-line option in (argc, argv).
1206 Can be called multiple times, to handle multiple sets of options.
1207 Returns number of strings consumed. */
1210 cpp_handle_option (pfile, argc, argv)
1216 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1218 /* Interpret "-" or a non-option as a file name. */
1219 if (argv[i][0] != '-' || argv[i][1] == '\0')
1221 if (CPP_OPTION (pfile, in_fname) == NULL)
1222 CPP_OPTION (pfile, in_fname) = argv[i];
1223 else if (CPP_OPTION (pfile, out_fname) == NULL)
1224 CPP_OPTION (pfile, out_fname) = argv[i];
1226 cpp_fatal (pfile, "Too many filenames. Type %s --help for usage info",
1231 enum opt_code opt_code;
1233 const char *arg = 0;
1235 /* Skip over '-'. */
1236 opt_index = parse_option (&argv[i][1]);
1240 opt_code = cl_options[opt_index].opt_code;
1241 if (cl_options[opt_index].msg)
1243 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1245 /* Yuk. Special case for -W as it must not swallow
1246 up any following argument. If this becomes common, add
1247 another field to the cl_options table. */
1248 if (arg[0] == '\0' && opt_code != OPT_W)
1253 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1261 case N_OPTS: /* Shut GCC up. */
1263 case OPT_fleading_underscore:
1264 CPP_OPTION (pfile, user_label_prefix) = "_";
1266 case OPT_fno_leading_underscore:
1267 CPP_OPTION (pfile, user_label_prefix) = "";
1269 case OPT_fno_operator_names:
1270 CPP_OPTION (pfile, operator_names) = 0;
1272 case OPT_fpreprocessed:
1273 CPP_OPTION (pfile, preprocessed) = 1;
1275 case OPT_fno_preprocessed:
1276 CPP_OPTION (pfile, preprocessed) = 0;
1278 case OPT_fshow_column:
1279 CPP_OPTION (pfile, show_column) = 1;
1281 case OPT_fno_show_column:
1282 CPP_OPTION (pfile, show_column) = 0;
1285 /* Silently ignore empty string, non-longs and silly values. */
1289 long tabstop = strtol (arg, &endptr, 10);
1290 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1291 CPP_OPTION (pfile, tabstop) = tabstop;
1295 CPP_OPTION (pfile, inhibit_warnings) = 1;
1300 CPP_OPTION (pfile, help_only) = 1;
1302 case OPT_target__help:
1303 /* Print if any target specific options. cpplib has none, but
1304 make sure help_only gets set. */
1305 CPP_OPTION (pfile, help_only) = 1;
1308 /* --version inhibits compilation, -version doesn't. -v means
1309 verbose and -version. Historical reasons, don't ask. */
1311 CPP_OPTION (pfile, help_only) = 1;
1312 pfile->print_version = 1;
1315 CPP_OPTION (pfile, verbose) = 1;
1316 pfile->print_version = 1;
1319 pfile->print_version = 1;
1323 CPP_OPTION (pfile, discard_comments) = 0;
1326 CPP_OPTION (pfile, no_line_commands) = 1;
1328 case OPT_dollar: /* Don't include $ in identifiers. */
1329 CPP_OPTION (pfile, dollars_in_ident) = 0;
1332 CPP_OPTION (pfile, print_include_names) = 1;
1335 new_pending_directive (pend, arg, cpp_define);
1337 case OPT_pedantic_errors:
1338 CPP_OPTION (pfile, pedantic_errors) = 1;
1341 CPP_OPTION (pfile, pedantic) = 1;
1344 CPP_OPTION (pfile, trigraphs) = 1;
1347 CPP_OPTION (pfile, cplusplus) = 1;
1348 CPP_OPTION (pfile, cplusplus_comments) = 1;
1351 CPP_OPTION (pfile, remap) = 1;
1354 CPP_OPTION (pfile, include_prefix) = arg;
1355 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1358 set_lang (pfile, CLK_GNUC89);
1360 case OPT_lang_cplusplus:
1361 set_lang (pfile, CLK_GNUCXX);
1364 set_lang (pfile, CLK_OBJC);
1366 case OPT_lang_objcplusplus:
1367 set_lang (pfile, CLK_OBJCXX);
1370 set_lang (pfile, CLK_ASM);
1372 case OPT_std_cplusplus98:
1373 set_lang (pfile, CLK_CXX98);
1376 set_lang (pfile, CLK_GNUC89);
1380 set_lang (pfile, CLK_GNUC99);
1382 case OPT_std_iso9899_199409:
1383 set_lang (pfile, CLK_STDC94);
1385 case OPT_std_iso9899_1990:
1388 set_lang (pfile, CLK_STDC89);
1390 case OPT_std_iso9899_199x:
1391 case OPT_std_iso9899_1999:
1394 set_lang (pfile, CLK_STDC99);
1397 /* -nostdinc causes no default include directories.
1398 You must specify all include-file directories with -I. */
1399 CPP_OPTION (pfile, no_standard_includes) = 1;
1401 case OPT_nostdincplusplus:
1402 /* -nostdinc++ causes no default C++-specific include directories. */
1403 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1406 if (CPP_OPTION (pfile, out_fname) == NULL)
1407 CPP_OPTION (pfile, out_fname) = arg;
1410 cpp_fatal (pfile, "Output filename specified twice");
1415 /* Args to -d specify what parts of macros to dump.
1416 Silently ignore unrecognised options; they may
1417 be aimed at the compiler proper. */
1421 while ((c = *arg++) != '\0')
1425 CPP_OPTION (pfile, dump_macros) = dump_only;
1426 CPP_OPTION (pfile, no_output) = 1;
1429 CPP_OPTION (pfile, dump_macros) = dump_names;
1432 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1435 CPP_OPTION (pfile, dump_includes) = 1;
1442 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1445 CPP_OPTION (pfile, print_deps) = 2;
1448 CPP_OPTION (pfile, print_deps) = 1;
1451 CPP_OPTION (pfile, deps_file) = arg;
1454 CPP_OPTION (pfile, deps_phony_targets) = 1;
1458 /* Add a target. -MQ quotes for Make. */
1459 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1462 /* -MD and -MMD for cpp0 are deprecated and undocumented
1463 (use -M or -MM with -MF instead), and probably should be
1464 removed with the next major GCC version. For the moment
1465 we allow these for the benefit of Automake 1.4, which
1466 uses these when dependency tracking is enabled. Automake
1467 1.5 will fix this. */
1469 CPP_OPTION (pfile, print_deps) = 2;
1470 CPP_OPTION (pfile, deps_file) = arg;
1473 CPP_OPTION (pfile, print_deps) = 1;
1474 CPP_OPTION (pfile, deps_file) = arg;
1480 /* -A with an argument beginning with '-' acts as
1481 #unassert on whatever immediately follows the '-'.
1482 If "-" is the whole argument, we eliminate all
1483 predefined macros and assertions, including those
1484 that were specified earlier on the command line.
1485 That way we can get rid of any that were passed
1486 automatically in from GCC. */
1490 struct pending_option *o1, *o2;
1492 o1 = pend->directive_head;
1499 pend->directive_head = NULL;
1500 pend->directive_tail = NULL;
1503 new_pending_directive (pend, arg + 1, cpp_unassert);
1506 new_pending_directive (pend, arg, cpp_assert);
1509 new_pending_directive (pend, arg, cpp_undef);
1511 case OPT_I: /* Add directory to path for includes. */
1512 if (!strcmp (arg, "-"))
1515 Use the preceding -I directories for #include "..."
1516 but not #include <...>.
1517 Don't search the directory of the present file
1518 for #include "...". (Note that -I. -I- is not the same as
1519 the default setup; -I. uses the compiler's working dir.) */
1520 if (! CPP_OPTION (pfile, ignore_srcdir))
1522 pend->quote_head = pend->brack_head;
1523 pend->quote_tail = pend->brack_tail;
1524 pend->brack_head = 0;
1525 pend->brack_tail = 0;
1526 CPP_OPTION (pfile, ignore_srcdir) = 1;
1530 cpp_fatal (pfile, "-I- specified twice");
1535 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1538 /* Add directory to beginning of system include path, as a system
1539 include directory. */
1540 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1544 struct pending_option *o = (struct pending_option *)
1545 xmalloc (sizeof (struct pending_option));
1548 /* This list has to be built in reverse order so that
1549 when cpp_start_read pushes all the -include files onto
1550 the buffer stack, they will be scanned in forward order. */
1551 o->next = pend->include_head;
1552 pend->include_head = o;
1557 struct pending_option *o = (struct pending_option *)
1558 xmalloc (sizeof (struct pending_option));
1562 APPEND (pend, imacros, o);
1565 case OPT_iwithprefix:
1566 /* Add directory to end of path for includes,
1567 with the default prefix at the front of its name. */
1569 case OPT_iwithprefixbefore:
1570 /* Add directory to main path for includes,
1571 with the default prefix at the front of its name. */
1578 if (CPP_OPTION (pfile, include_prefix) != 0)
1580 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1581 fname = xmalloc (ipl + len + 1);
1582 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1583 memcpy (fname + ipl, arg, len + 1);
1585 else if (cpp_GCC_INCLUDE_DIR_len)
1587 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1588 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1589 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1592 fname = xstrdup (arg);
1594 append_include_chain (pfile, fname,
1595 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1599 /* Add directory to end of path for includes. */
1600 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1603 /* Silently ignore unrecognised options. */
1604 if (!strcmp (argv[i], "-Wall"))
1606 CPP_OPTION (pfile, warn_trigraphs) = 1;
1607 CPP_OPTION (pfile, warn_comments) = 1;
1609 else if (!strcmp (argv[i], "-Wtraditional"))
1610 CPP_OPTION (pfile, warn_traditional) = 1;
1611 else if (!strcmp (argv[i], "-Wtrigraphs"))
1612 CPP_OPTION (pfile, warn_trigraphs) = 1;
1613 else if (!strcmp (argv[i], "-Wcomment"))
1614 CPP_OPTION (pfile, warn_comments) = 1;
1615 else if (!strcmp (argv[i], "-Wcomments"))
1616 CPP_OPTION (pfile, warn_comments) = 1;
1617 else if (!strcmp (argv[i], "-Wundef"))
1618 CPP_OPTION (pfile, warn_undef) = 1;
1619 else if (!strcmp (argv[i], "-Wimport"))
1620 CPP_OPTION (pfile, warn_import) = 1;
1621 else if (!strcmp (argv[i], "-Werror"))
1622 CPP_OPTION (pfile, warnings_are_errors) = 1;
1623 else if (!strcmp (argv[i], "-Wsystem-headers"))
1624 CPP_OPTION (pfile, warn_system_headers) = 1;
1625 else if (!strcmp (argv[i], "-Wno-traditional"))
1626 CPP_OPTION (pfile, warn_traditional) = 0;
1627 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1628 CPP_OPTION (pfile, warn_trigraphs) = 0;
1629 else if (!strcmp (argv[i], "-Wno-comment"))
1630 CPP_OPTION (pfile, warn_comments) = 0;
1631 else if (!strcmp (argv[i], "-Wno-comments"))
1632 CPP_OPTION (pfile, warn_comments) = 0;
1633 else if (!strcmp (argv[i], "-Wno-undef"))
1634 CPP_OPTION (pfile, warn_undef) = 0;
1635 else if (!strcmp (argv[i], "-Wno-import"))
1636 CPP_OPTION (pfile, warn_import) = 0;
1637 else if (!strcmp (argv[i], "-Wno-error"))
1638 CPP_OPTION (pfile, warnings_are_errors) = 0;
1639 else if (!strcmp (argv[i], "-Wno-system-headers"))
1640 CPP_OPTION (pfile, warn_system_headers) = 0;
1647 /* Handle command-line options in (argc, argv).
1648 Can be called multiple times, to handle multiple sets of options.
1649 Returns if an unrecognized option is seen.
1650 Returns number of strings consumed. */
1652 cpp_handle_options (pfile, argc, argv)
1658 int strings_processed;
1660 for (i = 0; i < argc; i += strings_processed)
1662 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1663 if (strings_processed == 0)
1670 /* Extra processing when all options are parsed, after all calls to
1671 cpp_handle_option[s]. Consistency checks etc. */
1673 cpp_post_options (pfile)
1676 if (pfile->print_version)
1678 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1679 #ifdef TARGET_VERSION
1682 fputc ('\n', stderr);
1685 /* Canonicalize in_fname and out_fname. We guarantee they are not
1686 NULL, and that the empty string represents stdin / stdout. */
1687 if (CPP_OPTION (pfile, in_fname) == NULL
1688 || !strcmp (CPP_OPTION (pfile, in_fname), "-"))
1689 CPP_OPTION (pfile, in_fname) = "";
1691 if (CPP_OPTION (pfile, out_fname) == NULL
1692 || !strcmp (CPP_OPTION (pfile, out_fname), "-"))
1693 CPP_OPTION (pfile, out_fname) = "";
1695 /* -Wtraditional is not useful in C++ mode. */
1696 if (CPP_OPTION (pfile, cplusplus))
1697 CPP_OPTION (pfile, warn_traditional) = 0;
1699 /* Set this if it hasn't been set already. */
1700 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1701 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1703 /* Permanently disable macro expansion if we are rescanning
1704 preprocessed text. */
1705 if (CPP_OPTION (pfile, preprocessed))
1706 pfile->state.prevent_expansion = 1;
1708 /* We need to do this after option processing and before
1709 cpp_start_read, as cppmain.c relies on the options->no_output to
1710 set its callbacks correctly before calling cpp_start_read. */
1711 init_dependency_output (pfile);
1713 /* After checking the environment variables, check if -M or -MM has
1714 not been specified, but other -M options have. */
1715 if (CPP_OPTION (pfile, print_deps) == 0 &&
1716 (CPP_OPTION (pfile, print_deps_missing_files)
1717 || CPP_OPTION (pfile, deps_file)
1718 || CPP_OPTION (pfile, deps_phony_targets)))
1719 cpp_fatal (pfile, "you must additionally specify either -M or -MM");
1722 /* Set up dependency-file output. */
1724 init_dependency_output (pfile)
1727 char *spec, *s, *output_file;
1729 /* Either of two environment variables can specify output of deps.
1730 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1731 where OUTPUT_FILE is the file to write deps info to
1732 and DEPS_TARGET is the target to mention in the deps. */
1734 if (CPP_OPTION (pfile, print_deps) == 0)
1736 spec = getenv ("DEPENDENCIES_OUTPUT");
1738 CPP_OPTION (pfile, print_deps) = 1;
1741 spec = getenv ("SUNPRO_DEPENDENCIES");
1743 CPP_OPTION (pfile, print_deps) = 2;
1748 /* Find the space before the DEPS_TARGET, if there is one. */
1749 s = strchr (spec, ' ');
1752 /* Let the caller perform MAKE quoting. */
1753 deps_add_target (pfile->deps, s + 1, 0);
1754 output_file = (char *) xmalloc (s - spec + 1);
1755 memcpy (output_file, spec, s - spec);
1756 output_file[s - spec] = 0;
1761 /* Command line overrides environment variables. */
1762 if (CPP_OPTION (pfile, deps_file) == 0)
1763 CPP_OPTION (pfile, deps_file) = output_file;
1764 CPP_OPTION (pfile, print_deps_append) = 1;
1767 /* If dependencies go to standard output, or -MG is used, we should
1768 suppress output. The user may be requesting other stuff to
1769 stdout, with -dM, -v etc. We let them shoot themselves in the
1771 if (CPP_OPTION (pfile, deps_file) == 0
1772 || CPP_OPTION (pfile, print_deps_missing_files))
1773 CPP_OPTION (pfile, no_output) = 1;
1779 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1780 /* To keep the lines from getting too long for some compilers, limit
1781 to about 500 characters (6 lines) per chunk. */
1784 -include <file> Include the contents of <file> before other files\n\
1785 -imacros <file> Accept definition of macros in <file>\n\
1786 -iprefix <path> Specify <path> as a prefix for next two options\n\
1787 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1788 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1789 -isystem <dir> Add <dir> to the start of the system include path\n\
1792 -idirafter <dir> Add <dir> to the end of the system include path\n\
1793 -I <dir> Add <dir> to the end of the main include path\n\
1794 -I- Fine-grained include path control; see info docs\n\
1795 -nostdinc Do not search system include directories\n\
1796 (dirs specified with -isystem will still be used)\n\
1797 -nostdinc++ Do not search system include directories for C++\n\
1798 -o <file> Put output into <file>\n\
1801 -pedantic Issue all warnings demanded by strict ISO C\n\
1802 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1803 -trigraphs Support ISO C trigraphs\n\
1804 -lang-c Assume that the input sources are in C\n\
1805 -lang-c89 Assume that the input sources are in C89\n\
1808 -lang-c++ Assume that the input sources are in C++\n\
1809 -lang-objc Assume that the input sources are in ObjectiveC\n\
1810 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1811 -lang-asm Assume that the input sources are in assembler\n\
1814 -std=<std name> Specify the conformance standard; one of:\n\
1815 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1816 iso9899:199409, iso9899:1999\n\
1817 -+ Allow parsing of C++ style features\n\
1818 -w Inhibit warning messages\n\
1819 -Wtrigraphs Warn if trigraphs are encountered\n\
1820 -Wno-trigraphs Do not warn about trigraphs\n\
1821 -Wcomment{s} Warn if one comment starts inside another\n\
1824 -Wno-comment{s} Do not warn about comments\n\
1825 -Wtraditional Warn about features not present in traditional C\n\
1826 -Wno-traditional Do not warn about traditional C\n\
1827 -Wundef Warn if an undefined macro is used by #if\n\
1828 -Wno-undef Do not warn about testing undefined macros\n\
1829 -Wimport Warn about the use of the #import directive\n\
1832 -Wno-import Do not warn about the use of #import\n\
1833 -Werror Treat all warnings as errors\n\
1834 -Wno-error Do not treat warnings as errors\n\
1835 -Wsystem-headers Do not suppress warnings from system headers\n\
1836 -Wno-system-headers Suppress warnings from system headers\n\
1837 -Wall Enable all preprocessor warnings\n\
1840 -M Generate make dependencies\n\
1841 -MM As -M, but ignore system header files\n\
1842 -MF <file> Write dependency output to the given file\n\
1843 -MG Treat missing header file as generated files\n\
1846 -MP Generate phony targets for all headers\n\
1847 -MQ <target> Add a MAKE-quoted target\n\
1848 -MT <target> Add an unquoted target\n\
1851 -D<macro> Define a <macro> with string '1' as its value\n\
1852 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1853 -A<question> (<answer>) Assert the <answer> to <question>\n\
1854 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1855 -U<macro> Undefine <macro> \n\
1856 -v Display the version number\n\
1859 -H Print the name of header files as they are used\n\
1860 -C Do not discard comments\n\
1861 -dM Display a list of macro definitions active at end\n\
1862 -dD Preserve macro definitions in output\n\
1863 -dN As -dD except that only the names are preserved\n\
1864 -dI Include #include directives in the output\n\
1867 -fpreprocessed Treat the input file as already preprocessed\n\
1868 -ftabstop=<number> Distance between tab stops for column reporting\n\
1869 -P Do not generate #line directives\n\
1870 -$ Do not allow '$' in identifiers\n\
1871 -remap Remap file names when including files.\n\
1872 --version Display version information\n\
1873 -h or --help Display this information\n\