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 file_name_list *quote_head, *quote_tail;
74 struct file_name_list *brack_head, *brack_tail;
75 struct file_name_list *systm_head, *systm_tail;
76 struct file_name_list *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 struct file_name_list * remove_dup_dir PARAMS ((cpp_reader *,
104 struct file_name_list *));
105 struct file_name_list * remove_dup_dirs PARAMS ((cpp_reader *,
106 struct file_name_list *));
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 enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };
123 /* If we have designated initializers (GCC >2.7) these tables can be
124 initialized, constant data. Otherwise, they have to be filled in at
126 #if HAVE_DESIGNATED_INITIALIZERS
128 #define init_trigraph_map() /* Nothing. */
129 #define TRIGRAPH_MAP \
130 __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = {
133 #define s(p, v) [p] = v,
137 #define TRIGRAPH_MAP U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
138 static void init_trigraph_map PARAMS ((void)) { \
139 unsigned char *x = _cpp_trigraph_map;
142 #define s(p, v) x[p] = v;
147 s('=', '#') s(')', ']') s('!', '|')
148 s('(', '[') s('\'', '^') s('>', '}')
149 s('/', '\\') s('<', '{') s('-', '~')
156 /* Given a colon-separated list of file names PATH,
157 add all the names to the search path for include files. */
160 path_include (pfile, list, path)
171 /* Find the end of this name. */
173 while (*q != 0 && *q != PATH_SEPARATOR) q++;
176 /* An empty name in the path stands for the current directory. */
177 name = (char *) xmalloc (2);
183 /* Otherwise use the directory that is named. */
184 name = (char *) xmalloc (q - p + 1);
185 memcpy (name, p, q - p);
189 append_include_chain (pfile, name, path, 0);
191 /* Advance past this name. */
199 /* Append DIR to include path PATH. DIR must be permanently allocated
202 append_include_chain (pfile, dir, path, cxx_aware)
208 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
209 struct file_name_list *new;
213 _cpp_simplify_pathname (dir);
216 /* Dirs that don't exist are silently ignored. */
218 cpp_notice_from_errno (pfile, dir);
219 else if (CPP_OPTION (pfile, verbose))
220 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
224 if (!S_ISDIR (st.st_mode))
226 cpp_notice (pfile, "%s: Not a directory", dir);
231 if (len > pfile->max_include_len)
232 pfile->max_include_len = len;
234 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
237 new->ino = st.st_ino;
238 new->dev = st.st_dev;
240 #ifdef NO_IMPLICIT_EXTERN_C
243 new->sysp = cxx_aware ? 1 : 2;
247 new->name_map = NULL;
253 case QUOTE: APPEND (pend, quote, new); break;
254 case BRACKET: APPEND (pend, brack, new); break;
255 case SYSTEM: APPEND (pend, systm, new); break;
256 case AFTER: APPEND (pend, after, new); break;
260 /* Handle a duplicated include path. PREV is the link in the chain
261 before the duplicate. The duplicate is removed from the chain and
262 freed. Returns PREV. */
263 struct file_name_list *
264 remove_dup_dir (pfile, prev)
266 struct file_name_list *prev;
268 struct file_name_list *cur = prev->next;
270 if (CPP_OPTION (pfile, verbose))
271 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
273 prev->next = cur->next;
280 /* Remove duplicate directories from a chain. Returns the tail of the
281 chain, or NULL if the chain is empty. This algorithm is quadratic
282 in the number of -I switches, which is acceptable since there
283 aren't usually that many of them. */
284 struct file_name_list *
285 remove_dup_dirs (pfile, head)
287 struct file_name_list *head;
289 struct file_name_list *prev = NULL, *cur, *other;
291 for (cur = head; cur; cur = cur->next)
293 for (other = head; other != cur; other = other->next)
294 if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
296 cur = remove_dup_dir (pfile, prev);
305 /* Merge the four include chains together in the order quote, bracket,
306 system, after. Remove duplicate dirs (as determined by
307 INO_T_EQ()). The system_include and after_include chains are never
308 referred to again after this function; all access is through the
309 bracket_include path.
311 For the future: Check if the directory is empty (but
312 how?) and possibly preload the include hash. */
315 merge_include_chains (pfile)
318 struct file_name_list *quote, *brack, *systm, *qtail;
320 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
322 quote = pend->quote_head;
323 brack = pend->brack_head;
324 systm = pend->systm_head;
325 qtail = pend->quote_tail;
327 /* Paste together bracket, system, and after include chains. */
329 pend->systm_tail->next = pend->after_head;
331 systm = pend->after_head;
334 pend->brack_tail->next = systm;
338 /* This is a bit tricky. First we drop dupes from the quote-include
339 list. Then we drop dupes from the bracket-include list.
340 Finally, if qtail and brack are the same directory, we cut out
343 We can't just merge the lists and then uniquify them because
344 then we may lose directories from the <> search path that should
345 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
346 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
347 -Ibar -I- -Ifoo -Iquux. */
349 remove_dup_dirs (pfile, brack);
350 qtail = remove_dup_dirs (pfile, quote);
356 /* If brack == qtail, remove brack as it's simpler. */
357 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
358 brack = remove_dup_dir (pfile, qtail);
363 CPP_OPTION (pfile, quote_include) = quote;
364 CPP_OPTION (pfile, bracket_include) = brack;
367 /* Sets internal flags correctly for a given language, and defines
368 macros if necessary. */
370 set_lang (pfile, lang)
374 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
377 CPP_OPTION (pfile, lang) = lang;
378 CPP_OPTION (pfile, objc) = 0;
379 CPP_OPTION (pfile, cplusplus) = 0;
380 CPP_OPTION (pfile, extended_numbers) = 1; /* Allowed in GNU C and C99. */
386 CPP_OPTION (pfile, trigraphs) = 0;
387 CPP_OPTION (pfile, dollars_in_ident) = 1;
388 CPP_OPTION (pfile, cplusplus_comments) = 1;
389 CPP_OPTION (pfile, digraphs) = 1;
390 CPP_OPTION (pfile, c99) = 1;
391 new_pending_directive (pend, "__STDC_VERSION__=199901L", cpp_define);
394 CPP_OPTION (pfile, trigraphs) = 0;
395 CPP_OPTION (pfile, dollars_in_ident) = 1;
396 CPP_OPTION (pfile, cplusplus_comments) = 1;
397 CPP_OPTION (pfile, digraphs) = 1;
398 CPP_OPTION (pfile, c99) = 0;
403 new_pending_directive (pend, "__STDC_VERSION__=199409L", cpp_define);
405 CPP_OPTION (pfile, trigraphs) = 1;
406 CPP_OPTION (pfile, dollars_in_ident) = 0;
407 CPP_OPTION (pfile, cplusplus_comments) = 0;
408 CPP_OPTION (pfile, digraphs) = lang == CLK_STDC94;
409 CPP_OPTION (pfile, c99) = 0;
410 CPP_OPTION (pfile, extended_numbers) = 0;
411 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
414 CPP_OPTION (pfile, trigraphs) = 1;
415 CPP_OPTION (pfile, dollars_in_ident) = 0;
416 CPP_OPTION (pfile, cplusplus_comments) = 1;
417 CPP_OPTION (pfile, digraphs) = 1;
418 CPP_OPTION (pfile, c99) = 1;
419 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
420 new_pending_directive (pend, "__STDC_VERSION__=199901L", cpp_define);
425 new_pending_directive (pend, "__cplusplus", cpp_define);
426 CPP_OPTION (pfile, cplusplus) = 1;
428 CPP_OPTION (pfile, trigraphs) = 0;
429 CPP_OPTION (pfile, dollars_in_ident) = 1;
430 CPP_OPTION (pfile, cplusplus_comments) = 1;
431 CPP_OPTION (pfile, digraphs) = 1;
432 CPP_OPTION (pfile, c99) = 0;
433 CPP_OPTION (pfile, objc) = 1;
434 new_pending_directive (pend, "__OBJC__", cpp_define);
440 CPP_OPTION (pfile, cplusplus) = 1;
441 CPP_OPTION (pfile, trigraphs) = lang == CLK_CXX98;
442 CPP_OPTION (pfile, dollars_in_ident) = lang == CLK_GNUCXX;
443 CPP_OPTION (pfile, cplusplus_comments) = 1;
444 CPP_OPTION (pfile, digraphs) = 1;
445 CPP_OPTION (pfile, c99) = 0;
446 new_pending_directive (pend, "__cplusplus", cpp_define);
451 CPP_OPTION (pfile, trigraphs) = 0;
452 CPP_OPTION (pfile, dollars_in_ident) = 0; /* Maybe not? */
453 CPP_OPTION (pfile, cplusplus_comments) = 1;
454 CPP_OPTION (pfile, digraphs) = 0;
455 CPP_OPTION (pfile, c99) = 0;
456 new_pending_directive (pend, "__ASSEMBLER__", cpp_define);
462 static int opt_comp PARAMS ((const void *, const void *));
464 /* Run-time sorting of options array. */
469 return strcmp (((struct cl_option *) p1)->opt_text,
470 ((struct cl_option *) p2)->opt_text);
474 /* init initializes library global state. It might not need to
475 do anything depending on the platform and compiler. */
480 static int initialized = 0;
487 /* For non-ASCII hosts, the cl_options array needs to be sorted at
489 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
492 /* Set up the trigraph map. This doesn't need to do anything if
493 we were compiled with a compiler that supports C99 designated
495 init_trigraph_map ();
499 /* Initialize a cpp_reader structure. */
501 cpp_create_reader (lang)
504 struct spec_nodes *s;
507 /* Initialise this instance of the library if it hasn't been already. */
510 pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
512 CPP_OPTION (pfile, warn_import) = 1;
513 CPP_OPTION (pfile, discard_comments) = 1;
514 CPP_OPTION (pfile, show_column) = 1;
515 CPP_OPTION (pfile, tabstop) = 8;
516 CPP_OPTION (pfile, operator_names) = 1;
518 CPP_OPTION (pfile, pending) =
519 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
521 /* After creating pfile->pending. */
522 set_lang (pfile, lang);
524 /* It's simplest to just create this struct whether or not it will
526 pfile->deps = deps_init ();
528 /* Initialize lexer state. */
529 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
531 /* Indicate date and time not yet calculated. */
532 pfile->date.type = CPP_EOF;
534 /* Initialise the base context. */
535 pfile->context = &pfile->base_context;
536 pfile->base_context.macro = 0;
537 pfile->base_context.prev = pfile->base_context.next = 0;
539 /* Identifier pool initially 8K. Unaligned, permanent pool. */
540 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
542 /* Argument pool initially 8K. Aligned, temporary pool. */
543 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
545 /* Macro pool initially 8K. Aligned, permanent pool. */
546 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
548 _cpp_init_hashtable (pfile);
549 _cpp_init_stacks (pfile);
550 _cpp_init_includes (pfile);
551 _cpp_init_internal_pragmas (pfile);
553 /* Initialize the special nodes. */
554 s = &pfile->spec_nodes;
555 s->n_L = cpp_lookup (pfile, DSC("L"));
556 s->n_defined = cpp_lookup (pfile, DSC("defined"));
557 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
558 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
559 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
560 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
561 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
566 /* Free resources used by PFILE. Accessing PFILE after this function
567 returns leads to undefined behaviour. */
573 struct file_name_list *dir, *dirn;
574 cpp_context *context, *contextn;
576 while (CPP_BUFFER (pfile) != NULL)
577 cpp_pop_buffer (pfile);
579 if (pfile->macro_buffer)
581 free ((PTR) pfile->macro_buffer);
582 pfile->macro_buffer = NULL;
583 pfile->macro_buffer_len = 0;
586 deps_free (pfile->deps);
588 _cpp_cleanup_includes (pfile);
589 _cpp_cleanup_stacks (pfile);
590 _cpp_cleanup_hashtable (pfile);
592 _cpp_free_lookaheads (pfile);
594 _cpp_free_pool (&pfile->ident_pool);
595 _cpp_free_pool (&pfile->macro_pool);
596 _cpp_free_pool (&pfile->argument_pool);
598 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
605 for (context = pfile->base_context.next; context; context = contextn)
607 contextn = context->next;
611 result = pfile->errors;
618 /* This structure defines one built-in identifier. A node will be
619 entered in the hash table under the name NAME, with value VALUE (if
620 any). If flags has OPERATOR, the node's operator field is used; if
621 flags has BUILTIN the node's builtin field is used.
623 Two values are not compile time constants, so we tag
624 them in the FLAGS field instead:
625 VERS value is the global version_string, quoted
626 ULP value is the global user_label_prefix
628 Also, macros with CPLUS set in the flags field are entered only for C++. */
634 unsigned char builtin;
635 unsigned char operator;
636 unsigned short flags;
643 #define OPERATOR 0x10
645 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
646 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
647 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
648 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
649 static const struct builtin builtin_array[] =
651 B("__TIME__", BT_TIME),
652 B("__DATE__", BT_DATE),
653 B("__FILE__", BT_FILE),
654 B("__BASE_FILE__", BT_BASE_FILE),
655 B("__LINE__", BT_SPECLINE),
656 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
657 B("__STDC__", BT_STDC),
659 X("__VERSION__", VERS),
660 X("__USER_LABEL_PREFIX__", ULP),
661 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
662 C("__HAVE_BUILTIN_SETJMP__", "1"),
663 #ifndef NO_BUILTIN_SIZE_TYPE
664 C("__SIZE_TYPE__", SIZE_TYPE),
666 #ifndef NO_BUILTIN_PTRDIFF_TYPE
667 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
669 #ifndef NO_BUILTIN_WCHAR_TYPE
670 C("__WCHAR_TYPE__", WCHAR_TYPE),
672 #ifndef NO_BUILTIN_WINT_TYPE
673 C("__WINT_TYPE__", WINT_TYPE),
676 /* Named operators known to the preprocessor. These cannot be #defined
677 and always have their stated meaning. They are treated like normal
678 identifiers except for the type code and the meaning. Most of them
679 are only for C++ (but see iso646.h). */
680 O("and", CPP_AND_AND, CPLUS),
681 O("and_eq", CPP_AND_EQ, CPLUS),
682 O("bitand", CPP_AND, CPLUS),
683 O("bitor", CPP_OR, CPLUS),
684 O("compl", CPP_COMPL, CPLUS),
685 O("not", CPP_NOT, CPLUS),
686 O("not_eq", CPP_NOT_EQ, CPLUS),
687 O("or", CPP_OR_OR, CPLUS),
688 O("or_eq", CPP_OR_EQ, CPLUS),
689 O("xor", CPP_XOR, CPLUS),
690 O("xor_eq", CPP_XOR_EQ, CPLUS)
696 #define builtin_array_end \
697 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
699 /* Subroutine of cpp_start_read; reads the builtins table above and
700 enters the macros into the hash table. */
702 init_builtins (pfile)
705 const struct builtin *b;
707 for(b = builtin_array; b < builtin_array_end; b++)
709 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
712 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
715 if (b->flags & (OPERATOR | BUILTIN))
717 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
718 if (b->flags & OPERATOR)
720 hp->flags |= NODE_OPERATOR;
721 hp->value.operator = b->operator;
726 hp->flags |= NODE_BUILTIN;
727 hp->value.builtin = b->builtin;
730 else /* A standard macro of some kind. */
737 /* Allocate enough space for 'name "value"\n\0'. */
738 str = alloca (b->len + strlen (version_string) + 5);
739 sprintf (str, "%s \"%s\"\n", b->name, version_string);
744 val = CPP_OPTION (pfile, user_label_prefix);
748 /* Allocate enough space for "name value\n\0". */
749 str = alloca (b->len + strlen (val) + 3);
750 sprintf(str, "%s %s\n", b->name, val);
753 _cpp_define_builtin (pfile, str);
762 #undef builtin_array_end
764 /* And another subroutine. This one sets up the standard include path. */
766 init_standard_includes (pfile)
770 const struct default_include *p;
771 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
773 /* Several environment variables may add to the include search path.
774 CPATH specifies an additional list of directories to be searched
775 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
776 etc. specify an additional list of directories to be searched as
777 if specified with -isystem, for the language indicated. */
779 GET_ENV_PATH_LIST (path, "CPATH");
780 if (path != 0 && *path != 0)
781 path_include (pfile, path, BRACKET);
783 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
786 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
789 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
792 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
795 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
798 if (path != 0 && *path != 0)
799 path_include (pfile, path, SYSTEM);
801 /* Search "translated" versions of GNU directories.
802 These have /usr/local/lib/gcc... replaced by specd_prefix. */
803 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
805 /* Remove the `include' from /usr/local/lib/gcc.../include.
806 GCC_INCLUDE_DIR will always end in /include. */
807 int default_len = cpp_GCC_INCLUDE_DIR_len;
808 char *default_prefix = (char *) alloca (default_len + 1);
809 int specd_len = strlen (specd_prefix);
811 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
812 default_prefix[default_len] = '\0';
814 for (p = cpp_include_defaults; p->fname; p++)
816 /* Some standard dirs are only for C++. */
818 || (CPP_OPTION (pfile, cplusplus)
819 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
821 /* Does this dir start with the prefix? */
822 if (!memcmp (p->fname, default_prefix, default_len))
824 /* Yes; change prefix and add to search list. */
825 int flen = strlen (p->fname);
826 int this_len = specd_len + flen - default_len;
827 char *str = (char *) xmalloc (this_len + 1);
828 memcpy (str, specd_prefix, specd_len);
829 memcpy (str + specd_len,
830 p->fname + default_len,
831 flen - default_len + 1);
833 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
839 /* Search ordinary names for GNU include directories. */
840 for (p = cpp_include_defaults; p->fname; p++)
842 /* Some standard dirs are only for C++. */
844 || (CPP_OPTION (pfile, cplusplus)
845 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
847 char *str = xstrdup (update_path (p->fname, p->component));
848 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
853 /* Handles -imacro and -include from the command line. */
855 do_includes (pfile, p, scan)
857 struct pending_option *p;
862 struct pending_option *q;
864 /* Don't handle if -fpreprocessed. Later: maybe update this to
865 use the #include "" search path if cpp_read_file fails. */
866 if (CPP_OPTION (pfile, preprocessed))
867 cpp_error (pfile, "-include and -imacros cannot be used with -fpreprocessed");
868 else if (_cpp_read_file (pfile, p->arg) && scan)
869 cpp_scan_buffer_nooutput (pfile, 0);
876 /* This is called after options have been processed. Setup for
877 processing input from the file named FNAME. (Use standard input if
878 FNAME == NULL.) Return 1 on success, 0 on failure. */
881 cpp_start_read (pfile, fname)
885 struct pending_option *p, *q;
887 /* Set up the include search path now. */
888 if (! CPP_OPTION (pfile, no_standard_includes))
889 init_standard_includes (pfile);
891 merge_include_chains (pfile);
893 /* With -v, print the list of dirs to search. */
894 if (CPP_OPTION (pfile, verbose))
896 struct file_name_list *l;
897 fprintf (stderr, _("#include \"...\" search starts here:\n"));
898 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
900 if (l == CPP_OPTION (pfile, bracket_include))
901 fprintf (stderr, _("#include <...> search starts here:\n"));
902 fprintf (stderr, " %s\n", l->name);
904 fprintf (stderr, _("End of search list.\n"));
907 if (CPP_OPTION (pfile, in_fname) == NULL
908 || *CPP_OPTION (pfile, in_fname) == 0)
910 CPP_OPTION (pfile, in_fname) = fname;
911 if (CPP_OPTION (pfile, in_fname) == NULL)
912 CPP_OPTION (pfile, in_fname) = "";
914 if (CPP_OPTION (pfile, out_fname) == NULL)
915 CPP_OPTION (pfile, out_fname) = "";
917 if (CPP_OPTION (pfile, print_deps))
918 /* Set the default target (if there is none already). */
919 deps_add_default_target (pfile->deps, CPP_OPTION (pfile, in_fname));
921 /* Open the main input file. This must be done early, so we have a
922 buffer to stand on. */
923 if (!_cpp_read_file (pfile, fname))
926 /* If already preprocessed, don't install __LINE__, etc., and ignore
927 command line definitions and assertions. Handle -U's, -D's and
928 -A's in the order they were seen. */
929 if (! CPP_OPTION (pfile, preprocessed))
930 init_builtins (pfile);
932 p = CPP_OPTION (pfile, pending)->directive_head;
935 if (! CPP_OPTION (pfile, preprocessed))
936 (*p->handler) (pfile, p->arg);
942 pfile->done_initializing = 1;
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_stdin_stdout) \
1047 DEF_OPT("$", 0, OPT_dollar) \
1048 DEF_OPT("+", 0, OPT_plus) \
1049 DEF_OPT("-help", 0, OPT__help) \
1050 DEF_OPT("-target-help", 0, OPT_target__help) \
1051 DEF_OPT("-version", 0, OPT__version) \
1052 DEF_OPT("A", no_ass, OPT_A) \
1053 DEF_OPT("C", 0, OPT_C) \
1054 DEF_OPT("D", no_mac, OPT_D) \
1055 DEF_OPT("H", 0, OPT_H) \
1056 DEF_OPT("I", no_dir, OPT_I) \
1057 DEF_OPT("M", 0, OPT_M) \
1058 DEF_OPT("MD", no_fil, OPT_MD) \
1059 DEF_OPT("MF", no_fil, OPT_MF) \
1060 DEF_OPT("MG", 0, OPT_MG) \
1061 DEF_OPT("MM", 0, OPT_MM) \
1062 DEF_OPT("MMD", no_fil, OPT_MMD) \
1063 DEF_OPT("MP", 0, OPT_MP) \
1064 DEF_OPT("MQ", no_tgt, OPT_MQ) \
1065 DEF_OPT("MT", no_tgt, OPT_MT) \
1066 DEF_OPT("P", 0, OPT_P) \
1067 DEF_OPT("U", no_mac, OPT_U) \
1068 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1069 DEF_OPT("d", no_arg, OPT_d) \
1070 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1071 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1072 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1073 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1074 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1075 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1076 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1077 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1078 DEF_OPT("h", 0, OPT_h) \
1079 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1080 DEF_OPT("imacros", no_fil, OPT_imacros) \
1081 DEF_OPT("include", no_fil, OPT_include) \
1082 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1083 DEF_OPT("isystem", no_dir, OPT_isystem) \
1084 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1085 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1086 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1087 DEF_OPT("lang-c", 0, OPT_lang_c) \
1088 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1089 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1090 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1091 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1092 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1093 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1094 DEF_OPT("o", no_fil, OPT_o) \
1095 DEF_OPT("pedantic", 0, OPT_pedantic) \
1096 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1097 DEF_OPT("remap", 0, OPT_remap) \
1098 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1099 DEF_OPT("std=c89", 0, OPT_std_c89) \
1100 DEF_OPT("std=c99", 0, OPT_std_c99) \
1101 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1102 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1103 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1104 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1105 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1106 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1107 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1108 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1109 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1110 DEF_OPT("v", 0, OPT_v) \
1111 DEF_OPT("version", 0, OPT_version) \
1112 DEF_OPT("w", 0, OPT_w)
1114 #define DEF_OPT(text, msg, code) code,
1117 COMMAND_LINE_OPTIONS
1124 const char *opt_text;
1127 enum opt_code opt_code;
1130 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1132 static struct cl_option cl_options[] =
1134 static const struct cl_option cl_options[] =
1137 COMMAND_LINE_OPTIONS
1140 #undef COMMAND_LINE_OPTIONS
1142 /* Perform a binary search to find which, if any, option the given
1143 command-line matches. Returns its index in the option array,
1144 negative on failure. Complications arise since some options can be
1145 suffixed with an argument, and multiple complete matches can occur,
1146 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to
1147 accept options beginning with -W that we do not recognise, but not
1148 to swallow any subsequent command line argument; this is handled as
1149 special cases in cpp_handle_option. */
1151 parse_option (input)
1154 unsigned int md, mn, mx;
1165 opt_len = cl_options[md].opt_len;
1166 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1174 if (input[opt_len] == '\0')
1176 /* We were passed more text. If the option takes an argument,
1177 we may match a later option or we may have been passed the
1178 argument. The longest possible option match succeeds.
1179 If the option takes no arguments we have not matched and
1180 continue the search (e.g. input="stdc++" match was "stdc"). */
1182 if (cl_options[md].msg)
1184 /* Scan forwards. If we get an exact match, return it.
1185 Otherwise, return the longest option-accepting match.
1186 This loops no more than twice with current options. */
1188 for (; mn < N_OPTS; mn++)
1190 opt_len = cl_options[mn].opt_len;
1191 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1193 if (input[opt_len] == '\0')
1195 if (cl_options[mn].msg)
1206 /* Handle one command-line option in (argc, argv).
1207 Can be called multiple times, to handle multiple sets of options.
1208 Returns number of strings consumed. */
1211 cpp_handle_option (pfile, argc, argv)
1217 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1219 if (argv[i][0] != '-')
1221 if (CPP_OPTION (pfile, out_fname) != NULL)
1222 cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
1224 else if (CPP_OPTION (pfile, in_fname) != NULL)
1225 CPP_OPTION (pfile, out_fname) = argv[i];
1227 CPP_OPTION (pfile, in_fname) = argv[i];
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;
1314 CPP_OPTION (pfile, verbose) = 1;
1319 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1320 #ifdef TARGET_VERSION
1323 fputc ('\n', stderr);
1327 CPP_OPTION (pfile, discard_comments) = 0;
1330 CPP_OPTION (pfile, no_line_commands) = 1;
1332 case OPT_dollar: /* Don't include $ in identifiers. */
1333 CPP_OPTION (pfile, dollars_in_ident) = 0;
1336 CPP_OPTION (pfile, print_include_names) = 1;
1339 new_pending_directive (pend, arg, cpp_define);
1341 case OPT_pedantic_errors:
1342 CPP_OPTION (pfile, pedantic_errors) = 1;
1345 CPP_OPTION (pfile, pedantic) = 1;
1348 CPP_OPTION (pfile, trigraphs) = 1;
1351 CPP_OPTION (pfile, cplusplus) = 1;
1352 CPP_OPTION (pfile, cplusplus_comments) = 1;
1355 CPP_OPTION (pfile, remap) = 1;
1358 CPP_OPTION (pfile, include_prefix) = arg;
1359 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1362 set_lang (pfile, CLK_GNUC89);
1364 case OPT_lang_cplusplus:
1365 set_lang (pfile, CLK_GNUCXX);
1368 set_lang (pfile, CLK_OBJC);
1370 case OPT_lang_objcplusplus:
1371 set_lang (pfile, CLK_OBJCXX);
1374 set_lang (pfile, CLK_ASM);
1376 case OPT_std_cplusplus98:
1377 set_lang (pfile, CLK_CXX98);
1380 set_lang (pfile, CLK_GNUC89);
1384 set_lang (pfile, CLK_GNUC99);
1386 case OPT_std_iso9899_199409:
1387 set_lang (pfile, CLK_STDC94);
1389 case OPT_std_iso9899_1990:
1392 set_lang (pfile, CLK_STDC89);
1394 case OPT_std_iso9899_199x:
1395 case OPT_std_iso9899_1999:
1398 set_lang (pfile, CLK_STDC99);
1401 /* -nostdinc causes no default include directories.
1402 You must specify all include-file directories with -I. */
1403 CPP_OPTION (pfile, no_standard_includes) = 1;
1405 case OPT_nostdincplusplus:
1406 /* -nostdinc++ causes no default C++-specific include directories. */
1407 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1410 if (CPP_OPTION (pfile, out_fname) != NULL)
1412 cpp_fatal (pfile, "Output filename specified twice");
1415 CPP_OPTION (pfile, out_fname) = arg;
1416 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1417 CPP_OPTION (pfile, out_fname) = "";
1419 case OPT_stdin_stdout:
1420 /* JF handle '-' as file name meaning stdin or stdout. */
1421 if (CPP_OPTION (pfile, in_fname) == NULL)
1422 CPP_OPTION (pfile, in_fname) = "";
1423 else if (CPP_OPTION (pfile, out_fname) == NULL)
1424 CPP_OPTION (pfile, out_fname) = "";
1427 /* Args to -d specify what parts of macros to dump.
1428 Silently ignore unrecognised options; they may
1429 be aimed at the compiler proper. */
1433 while ((c = *arg++) != '\0')
1437 CPP_OPTION (pfile, dump_macros) = dump_only;
1438 CPP_OPTION (pfile, no_output) = 1;
1441 CPP_OPTION (pfile, dump_macros) = dump_names;
1444 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1447 CPP_OPTION (pfile, dump_includes) = 1;
1454 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1457 CPP_OPTION (pfile, print_deps) = 2;
1460 CPP_OPTION (pfile, print_deps) = 1;
1463 CPP_OPTION (pfile, deps_file) = arg;
1466 CPP_OPTION (pfile, deps_phony_targets) = 1;
1470 /* Add a target. -MQ quotes for Make. */
1471 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1474 /* -MD and -MMD for cpp0 are deprecated and undocumented
1475 (use -M or -MM with -MF instead), and probably should be
1476 removed with the next major GCC version. For the moment
1477 we allow these for the benefit of Automake 1.4, which
1478 uses these when dependency tracking is enabled. Automake
1479 1.5 will fix this. */
1481 CPP_OPTION (pfile, print_deps) = 2;
1482 CPP_OPTION (pfile, deps_file) = arg;
1485 CPP_OPTION (pfile, print_deps) = 1;
1486 CPP_OPTION (pfile, deps_file) = arg;
1492 /* -A with an argument beginning with '-' acts as
1493 #unassert on whatever immediately follows the '-'.
1494 If "-" is the whole argument, we eliminate all
1495 predefined macros and assertions, including those
1496 that were specified earlier on the command line.
1497 That way we can get rid of any that were passed
1498 automatically in from GCC. */
1502 struct pending_option *o1, *o2;
1504 o1 = pend->directive_head;
1511 pend->directive_head = NULL;
1512 pend->directive_tail = NULL;
1515 new_pending_directive (pend, arg + 1, cpp_unassert);
1518 new_pending_directive (pend, arg, cpp_assert);
1521 new_pending_directive (pend, arg, cpp_undef);
1523 case OPT_I: /* Add directory to path for includes. */
1524 if (!strcmp (arg, "-"))
1527 Use the preceding -I directories for #include "..."
1528 but not #include <...>.
1529 Don't search the directory of the present file
1530 for #include "...". (Note that -I. -I- is not the same as
1531 the default setup; -I. uses the compiler's working dir.) */
1532 if (! CPP_OPTION (pfile, ignore_srcdir))
1534 pend->quote_head = pend->brack_head;
1535 pend->quote_tail = pend->brack_tail;
1536 pend->brack_head = 0;
1537 pend->brack_tail = 0;
1538 CPP_OPTION (pfile, ignore_srcdir) = 1;
1542 cpp_fatal (pfile, "-I- specified twice");
1547 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1550 /* Add directory to beginning of system include path, as a system
1551 include directory. */
1552 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1556 struct pending_option *o = (struct pending_option *)
1557 xmalloc (sizeof (struct pending_option));
1560 /* This list has to be built in reverse order so that
1561 when cpp_start_read pushes all the -include files onto
1562 the buffer stack, they will be scanned in forward order. */
1563 o->next = pend->include_head;
1564 pend->include_head = o;
1569 struct pending_option *o = (struct pending_option *)
1570 xmalloc (sizeof (struct pending_option));
1574 APPEND (pend, imacros, o);
1577 case OPT_iwithprefix:
1578 /* Add directory to end of path for includes,
1579 with the default prefix at the front of its name. */
1581 case OPT_iwithprefixbefore:
1582 /* Add directory to main path for includes,
1583 with the default prefix at the front of its name. */
1590 if (CPP_OPTION (pfile, include_prefix) != 0)
1592 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1593 fname = xmalloc (ipl + len + 1);
1594 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1595 memcpy (fname + ipl, arg, len + 1);
1597 else if (cpp_GCC_INCLUDE_DIR_len)
1599 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1600 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1601 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1604 fname = xstrdup (arg);
1606 append_include_chain (pfile, fname,
1607 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1611 /* Add directory to end of path for includes. */
1612 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1615 /* Silently ignore unrecognised options. */
1616 if (!strcmp (argv[i], "-Wall"))
1618 CPP_OPTION (pfile, warn_trigraphs) = 1;
1619 CPP_OPTION (pfile, warn_comments) = 1;
1621 else if (!strcmp (argv[i], "-Wtraditional"))
1622 CPP_OPTION (pfile, warn_traditional) = 1;
1623 else if (!strcmp (argv[i], "-Wtrigraphs"))
1624 CPP_OPTION (pfile, warn_trigraphs) = 1;
1625 else if (!strcmp (argv[i], "-Wcomment"))
1626 CPP_OPTION (pfile, warn_comments) = 1;
1627 else if (!strcmp (argv[i], "-Wcomments"))
1628 CPP_OPTION (pfile, warn_comments) = 1;
1629 else if (!strcmp (argv[i], "-Wundef"))
1630 CPP_OPTION (pfile, warn_undef) = 1;
1631 else if (!strcmp (argv[i], "-Wimport"))
1632 CPP_OPTION (pfile, warn_import) = 1;
1633 else if (!strcmp (argv[i], "-Werror"))
1634 CPP_OPTION (pfile, warnings_are_errors) = 1;
1635 else if (!strcmp (argv[i], "-Wsystem-headers"))
1636 CPP_OPTION (pfile, warn_system_headers) = 1;
1637 else if (!strcmp (argv[i], "-Wno-traditional"))
1638 CPP_OPTION (pfile, warn_traditional) = 0;
1639 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1640 CPP_OPTION (pfile, warn_trigraphs) = 0;
1641 else if (!strcmp (argv[i], "-Wno-comment"))
1642 CPP_OPTION (pfile, warn_comments) = 0;
1643 else if (!strcmp (argv[i], "-Wno-comments"))
1644 CPP_OPTION (pfile, warn_comments) = 0;
1645 else if (!strcmp (argv[i], "-Wno-undef"))
1646 CPP_OPTION (pfile, warn_undef) = 0;
1647 else if (!strcmp (argv[i], "-Wno-import"))
1648 CPP_OPTION (pfile, warn_import) = 0;
1649 else if (!strcmp (argv[i], "-Wno-error"))
1650 CPP_OPTION (pfile, warnings_are_errors) = 0;
1651 else if (!strcmp (argv[i], "-Wno-system-headers"))
1652 CPP_OPTION (pfile, warn_system_headers) = 0;
1659 /* Handle command-line options in (argc, argv).
1660 Can be called multiple times, to handle multiple sets of options.
1661 Returns if an unrecognized option is seen.
1662 Returns number of strings consumed. */
1664 cpp_handle_options (pfile, argc, argv)
1670 int strings_processed;
1672 for (i = 0; i < argc; i += strings_processed)
1674 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1675 if (strings_processed == 0)
1682 /* Extra processing when all options are parsed, after all calls to
1683 cpp_handle_option[s]. Consistency checks etc. */
1685 cpp_post_options (pfile)
1688 /* -Wtraditional is not useful in C++ mode. */
1689 if (CPP_OPTION (pfile, cplusplus))
1690 CPP_OPTION (pfile, warn_traditional) = 0;
1692 /* Set this if it hasn't been set already. */
1693 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1694 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1696 /* We need to do this after option processing and before
1697 cpp_start_read, as cppmain.c relies on the options->no_output to
1698 set its callbacks correctly before calling cpp_start_read. */
1699 init_dependency_output (pfile);
1701 /* After checking the environment variables, check if -M or -MM has
1702 not been specified, but other -M options have. */
1703 if (CPP_OPTION (pfile, print_deps) == 0 &&
1704 (CPP_OPTION (pfile, print_deps_missing_files)
1705 || CPP_OPTION (pfile, deps_file)
1706 || CPP_OPTION (pfile, deps_phony_targets)))
1707 cpp_fatal (pfile, "you must additionally specify either -M or -MM");
1710 /* Set up dependency-file output. */
1712 init_dependency_output (pfile)
1715 char *spec, *s, *output_file;
1717 /* Either of two environment variables can specify output of deps.
1718 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1719 where OUTPUT_FILE is the file to write deps info to
1720 and DEPS_TARGET is the target to mention in the deps. */
1722 if (CPP_OPTION (pfile, print_deps) == 0)
1724 spec = getenv ("DEPENDENCIES_OUTPUT");
1726 CPP_OPTION (pfile, print_deps) = 1;
1729 spec = getenv ("SUNPRO_DEPENDENCIES");
1731 CPP_OPTION (pfile, print_deps) = 2;
1736 /* Find the space before the DEPS_TARGET, if there is one. */
1737 s = strchr (spec, ' ');
1740 /* Let the caller perform MAKE quoting. */
1741 deps_add_target (pfile->deps, s + 1, 0);
1742 output_file = (char *) xmalloc (s - spec + 1);
1743 memcpy (output_file, spec, s - spec);
1744 output_file[s - spec] = 0;
1749 /* Command line overrides environment variables. */
1750 if (CPP_OPTION (pfile, deps_file) == 0)
1751 CPP_OPTION (pfile, deps_file) = output_file;
1752 CPP_OPTION (pfile, print_deps_append) = 1;
1755 /* If dependencies go to standard output, or -MG is used, we should
1756 suppress output. The user may be requesting other stuff to
1757 stdout, with -dM, -v etc. We let them shoot themselves in the
1759 if (CPP_OPTION (pfile, deps_file) == 0
1760 || CPP_OPTION (pfile, print_deps_missing_files))
1761 CPP_OPTION (pfile, no_output) = 1;
1767 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1768 /* To keep the lines from getting too long for some compilers, limit
1769 to about 500 characters (6 lines) per chunk. */
1772 -include <file> Include the contents of <file> before other files\n\
1773 -imacros <file> Accept definition of macros in <file>\n\
1774 -iprefix <path> Specify <path> as a prefix for next two options\n\
1775 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1776 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1777 -isystem <dir> Add <dir> to the start of the system include path\n\
1780 -idirafter <dir> Add <dir> to the end of the system include path\n\
1781 -I <dir> Add <dir> to the end of the main include path\n\
1782 -I- Fine-grained include path control; see info docs\n\
1783 -nostdinc Do not search system include directories\n\
1784 (dirs specified with -isystem will still be used)\n\
1785 -nostdinc++ Do not search system include directories for C++\n\
1786 -o <file> Put output into <file>\n\
1789 -pedantic Issue all warnings demanded by strict ISO C\n\
1790 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1791 -trigraphs Support ISO C trigraphs\n\
1792 -lang-c Assume that the input sources are in C\n\
1793 -lang-c89 Assume that the input sources are in C89\n\
1796 -lang-c++ Assume that the input sources are in C++\n\
1797 -lang-objc Assume that the input sources are in ObjectiveC\n\
1798 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1799 -lang-asm Assume that the input sources are in assembler\n\
1802 -std=<std name> Specify the conformance standard; one of:\n\
1803 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1804 iso9899:199409, iso9899:1999\n\
1805 -+ Allow parsing of C++ style features\n\
1806 -w Inhibit warning messages\n\
1807 -Wtrigraphs Warn if trigraphs are encountered\n\
1808 -Wno-trigraphs Do not warn about trigraphs\n\
1809 -Wcomment{s} Warn if one comment starts inside another\n\
1812 -Wno-comment{s} Do not warn about comments\n\
1813 -Wtraditional Warn about features not present in traditional C\n\
1814 -Wno-traditional Do not warn about traditional C\n\
1815 -Wundef Warn if an undefined macro is used by #if\n\
1816 -Wno-undef Do not warn about testing undefined macros\n\
1817 -Wimport Warn about the use of the #import directive\n\
1820 -Wno-import Do not warn about the use of #import\n\
1821 -Werror Treat all warnings as errors\n\
1822 -Wno-error Do not treat warnings as errors\n\
1823 -Wsystem-headers Do not suppress warnings from system headers\n\
1824 -Wno-system-headers Suppress warnings from system headers\n\
1825 -Wall Enable all preprocessor warnings\n\
1828 -M Generate make dependencies\n\
1829 -MM As -M, but ignore system header files\n\
1830 -MF <file> Write dependency output to the given file\n\
1831 -MG Treat missing header file as generated files\n\
1834 -MP Generate phony targets for all headers\n\
1835 -MQ <target> Add a MAKE-quoted target\n\
1836 -MT <target> Add an unquoted target\n\
1839 -D<macro> Define a <macro> with string '1' as its value\n\
1840 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1841 -A<question> (<answer>) Assert the <answer> to <question>\n\
1842 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1843 -U<macro> Undefine <macro> \n\
1844 -v Display the version number\n\
1847 -H Print the name of header files as they are used\n\
1848 -C Do not discard comments\n\
1849 -dM Display a list of macro definitions active at end\n\
1850 -dD Preserve macro definitions in output\n\
1851 -dN As -dD except that only the names are preserved\n\
1852 -dI Include #include directives in the output\n\
1855 -ftabstop=<number> Distance between tab stops for column reporting\n\
1856 -P Do not generate #line directives\n\
1857 -$ Do not allow '$' in identifiers\n\
1858 -remap Remap file names when including files.\n\
1859 --version Display version information\n\
1860 -h or --help Display this information\n\