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)))
44 #elif (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
45 #define INO_T_EQ(a, b) 0
47 #define INO_T_EQ(a, b) ((a) == (b))
50 /* Internal structures and prototypes. */
52 /* A `struct pending_option' remembers one -D, -A, -U, -include, or
55 typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
58 struct pending_option *next;
60 cl_directive_handler handler;
63 /* The `pending' structure accumulates all the options that are not
64 actually processed until we hit cpp_start_read. It consists of
65 several lists, one for each type of option. We keep both head and
66 tail pointers for quick insertion. */
69 struct pending_option *directive_head, *directive_tail;
71 struct file_name_list *quote_head, *quote_tail;
72 struct file_name_list *brack_head, *brack_tail;
73 struct file_name_list *systm_head, *systm_tail;
74 struct file_name_list *after_head, *after_tail;
76 struct pending_option *imacros_head, *imacros_tail;
77 struct pending_option *include_head, *include_tail;
81 #define APPEND(pend, list, elt) \
82 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
83 else (pend)->list##_tail->next = (elt); \
84 (pend)->list##_tail = (elt); \
87 #define APPEND(pend, list, elt) \
88 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
89 else (pend)->list/**/_tail->next = (elt); \
90 (pend)->list/**/_tail = (elt); \
94 static void print_help PARAMS ((void));
95 static void path_include PARAMS ((cpp_reader *,
97 static void init_library PARAMS ((void));
98 static void init_builtins PARAMS ((cpp_reader *));
99 static void append_include_chain PARAMS ((cpp_reader *,
101 struct file_name_list * remove_dup_dir PARAMS ((cpp_reader *,
102 struct file_name_list *));
103 struct file_name_list * remove_dup_dirs PARAMS ((cpp_reader *,
104 struct file_name_list *));
105 static void merge_include_chains PARAMS ((cpp_reader *));
106 static void do_includes PARAMS ((cpp_reader *,
107 struct pending_option *,
109 static void set_lang PARAMS ((cpp_reader *, enum c_lang));
110 static void init_dependency_output PARAMS ((cpp_reader *));
111 static void init_standard_includes PARAMS ((cpp_reader *));
112 static void new_pending_directive PARAMS ((struct cpp_pending *,
114 cl_directive_handler));
115 static void output_deps PARAMS ((cpp_reader *));
116 static int parse_option PARAMS ((const char *));
118 /* Fourth argument to append_include_chain: chain to use. */
119 enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };
121 /* If we have designated initializers (GCC >2.7) these tables can be
122 initialized, constant data. Otherwise, they have to be filled in at
124 #if HAVE_DESIGNATED_INITIALIZERS
126 #define init_trigraph_map() /* Nothing. */
127 #define TRIGRAPH_MAP \
128 __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = {
131 #define s(p, v) [p] = v,
135 #define TRIGRAPH_MAP U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
136 static void init_trigraph_map PARAMS ((void)) { \
137 unsigned char *x = _cpp_trigraph_map;
140 #define s(p, v) x[p] = v;
145 s('=', '#') s(')', ']') s('!', '|')
146 s('(', '[') s('\'', '^') s('>', '}')
147 s('/', '\\') s('<', '{') s('-', '~')
154 /* Given a colon-separated list of file names PATH,
155 add all the names to the search path for include files. */
158 path_include (pfile, list, path)
169 /* Find the end of this name. */
171 while (*q != 0 && *q != PATH_SEPARATOR) q++;
174 /* An empty name in the path stands for the current directory. */
175 name = (char *) xmalloc (2);
181 /* Otherwise use the directory that is named. */
182 name = (char *) xmalloc (q - p + 1);
183 memcpy (name, p, q - p);
187 append_include_chain (pfile, name, path, 0);
189 /* Advance past this name. */
197 /* Append DIR to include path PATH. DIR must be permanently allocated
200 append_include_chain (pfile, dir, path, cxx_aware)
206 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
207 struct file_name_list *new;
211 _cpp_simplify_pathname (dir);
214 /* Dirs that don't exist are silently ignored. */
216 cpp_notice_from_errno (pfile, dir);
217 else if (CPP_OPTION (pfile, verbose))
218 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
222 if (!S_ISDIR (st.st_mode))
224 cpp_notice (pfile, "%s: Not a directory", dir);
229 if (len > pfile->max_include_len)
230 pfile->max_include_len = len;
232 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
235 new->ino = st.st_ino;
236 new->dev = st.st_dev;
238 new->sysp = cxx_aware ? 1 : 2;
241 new->name_map = NULL;
247 case QUOTE: APPEND (pend, quote, new); break;
248 case BRACKET: APPEND (pend, brack, new); break;
249 case SYSTEM: APPEND (pend, systm, new); break;
250 case AFTER: APPEND (pend, after, new); break;
254 /* Handle a duplicated include path. PREV is the link in the chain
255 before the duplicate. The duplicate is removed from the chain and
256 freed. Returns PREV. */
257 struct file_name_list *
258 remove_dup_dir (pfile, prev)
260 struct file_name_list *prev;
262 struct file_name_list *cur = prev->next;
264 if (CPP_OPTION (pfile, verbose))
265 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
267 prev->next = cur->next;
274 /* Remove duplicate directories from a chain. Returns the tail of the
275 chain, or NULL if the chain is empty. This algorithm is quadratic
276 in the number of -I switches, which is acceptable since there
277 aren't usually that many of them. */
278 struct file_name_list *
279 remove_dup_dirs (pfile, head)
281 struct file_name_list *head;
283 struct file_name_list *prev = NULL, *cur, *other;
285 for (cur = head; cur; cur = cur->next)
287 for (other = head; other != cur; other = other->next)
288 if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
290 cur = remove_dup_dir (pfile, prev);
299 /* Merge the four include chains together in the order quote, bracket,
300 system, after. Remove duplicate dirs (as determined by
301 INO_T_EQ()). The system_include and after_include chains are never
302 referred to again after this function; all access is through the
303 bracket_include path.
305 For the future: Check if the directory is empty (but
306 how?) and possibly preload the include hash. */
309 merge_include_chains (pfile)
312 struct file_name_list *quote, *brack, *systm, *qtail;
314 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
316 quote = pend->quote_head;
317 brack = pend->brack_head;
318 systm = pend->systm_head;
319 qtail = pend->quote_tail;
321 /* Paste together bracket, system, and after include chains. */
323 pend->systm_tail->next = pend->after_head;
325 systm = pend->after_head;
328 pend->brack_tail->next = systm;
332 /* This is a bit tricky. First we drop dupes from the quote-include
333 list. Then we drop dupes from the bracket-include list.
334 Finally, if qtail and brack are the same directory, we cut out
337 We can't just merge the lists and then uniquify them because
338 then we may lose directories from the <> search path that should
339 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
340 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
341 -Ibar -I- -Ifoo -Iquux. */
343 remove_dup_dirs (pfile, brack);
344 qtail = remove_dup_dirs (pfile, quote);
350 /* If brack == qtail, remove brack as it's simpler. */
351 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
352 brack = remove_dup_dir (pfile, qtail);
357 CPP_OPTION (pfile, quote_include) = quote;
358 CPP_OPTION (pfile, bracket_include) = brack;
361 /* Sets internal flags correctly for a given language, and defines
362 macros if necessary. */
364 set_lang (pfile, lang)
368 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
371 CPP_OPTION (pfile, lang) = lang;
372 CPP_OPTION (pfile, objc) = 0;
373 CPP_OPTION (pfile, cplusplus) = 0;
374 CPP_OPTION (pfile, extended_numbers) = 1; /* Allowed in GNU C and C99. */
380 CPP_OPTION (pfile, trigraphs) = 0;
381 CPP_OPTION (pfile, dollars_in_ident) = 1;
382 CPP_OPTION (pfile, cplusplus_comments) = 1;
383 CPP_OPTION (pfile, digraphs) = 1;
384 CPP_OPTION (pfile, c99) = 1;
385 new_pending_directive (pend, "__STDC_VERSION__=199901L", cpp_define);
388 CPP_OPTION (pfile, trigraphs) = 0;
389 CPP_OPTION (pfile, dollars_in_ident) = 1;
390 CPP_OPTION (pfile, cplusplus_comments) = 1;
391 CPP_OPTION (pfile, digraphs) = 1;
392 CPP_OPTION (pfile, c99) = 0;
397 new_pending_directive (pend, "__STDC_VERSION__=199409L", cpp_define);
399 CPP_OPTION (pfile, trigraphs) = 1;
400 CPP_OPTION (pfile, dollars_in_ident) = 0;
401 CPP_OPTION (pfile, cplusplus_comments) = 0;
402 CPP_OPTION (pfile, digraphs) = lang == CLK_STDC94;
403 CPP_OPTION (pfile, c99) = 0;
404 CPP_OPTION (pfile, extended_numbers) = 0;
405 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
408 CPP_OPTION (pfile, trigraphs) = 1;
409 CPP_OPTION (pfile, dollars_in_ident) = 0;
410 CPP_OPTION (pfile, cplusplus_comments) = 1;
411 CPP_OPTION (pfile, digraphs) = 1;
412 CPP_OPTION (pfile, c99) = 1;
413 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
414 new_pending_directive (pend, "__STDC_VERSION__=199901L", cpp_define);
419 new_pending_directive (pend, "__cplusplus", cpp_define);
420 CPP_OPTION (pfile, cplusplus) = 1;
422 CPP_OPTION (pfile, trigraphs) = 0;
423 CPP_OPTION (pfile, dollars_in_ident) = 1;
424 CPP_OPTION (pfile, cplusplus_comments) = 1;
425 CPP_OPTION (pfile, digraphs) = 1;
426 CPP_OPTION (pfile, c99) = 0;
427 CPP_OPTION (pfile, objc) = 1;
428 new_pending_directive (pend, "__OBJC__", cpp_define);
434 CPP_OPTION (pfile, cplusplus) = 1;
435 CPP_OPTION (pfile, trigraphs) = lang == CLK_CXX98;
436 CPP_OPTION (pfile, dollars_in_ident) = lang == CLK_GNUCXX;
437 CPP_OPTION (pfile, cplusplus_comments) = 1;
438 CPP_OPTION (pfile, digraphs) = 1;
439 CPP_OPTION (pfile, c99) = 0;
440 new_pending_directive (pend, "__cplusplus", cpp_define);
445 CPP_OPTION (pfile, trigraphs) = 0;
446 CPP_OPTION (pfile, dollars_in_ident) = 0; /* Maybe not? */
447 CPP_OPTION (pfile, cplusplus_comments) = 1;
448 CPP_OPTION (pfile, digraphs) = 0;
449 CPP_OPTION (pfile, c99) = 0;
450 new_pending_directive (pend, "__ASSEMBLER__", cpp_define);
456 static int opt_comp PARAMS ((const void *, const void *));
458 /* Run-time sorting of options array. */
463 return strcmp (((struct cl_option *) p1)->opt_text,
464 ((struct cl_option *) p2)->opt_text);
468 /* init initializes library global state. It might not need to
469 do anything depending on the platform and compiler. */
474 static int initialized = 0;
481 /* For non-ASCII hosts, the cl_options array needs to be sorted at
483 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
486 /* Set up the trigraph map. This doesn't need to do anything if
487 we were compiled with a compiler that supports C99 designated
489 init_trigraph_map ();
493 /* Initialize a cpp_reader structure. */
495 cpp_create_reader (lang)
498 struct spec_nodes *s;
501 /* Initialise this instance of the library if it hasn't been already. */
504 pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
506 CPP_OPTION (pfile, warn_import) = 1;
507 CPP_OPTION (pfile, discard_comments) = 1;
508 CPP_OPTION (pfile, show_column) = 1;
509 CPP_OPTION (pfile, tabstop) = 8;
510 CPP_OPTION (pfile, operator_names) = 1;
512 CPP_OPTION (pfile, pending) =
513 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
515 /* After creating pfile->pending. */
516 set_lang (pfile, lang);
518 /* It's simplest to just create this struct whether or not it will
520 pfile->deps = deps_init ();
522 /* Initialize lexer state. */
523 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
525 /* Indicate date and time not yet calculated. */
526 pfile->date.type = CPP_EOF;
528 /* Initialise the base context. */
529 pfile->context = &pfile->base_context;
530 pfile->base_context.macro = 0;
531 pfile->base_context.prev = pfile->base_context.next = 0;
533 /* Identifier pool initially 8K. Unaligned, permanent pool. */
534 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
536 /* Argument pool initially 8K. Aligned, temporary pool. */
537 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
539 /* Macro pool initially 8K. Aligned, permanent pool. */
540 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
542 _cpp_init_hashtable (pfile);
543 _cpp_init_stacks (pfile);
544 _cpp_init_includes (pfile);
545 _cpp_init_internal_pragmas (pfile);
547 /* Initialize the special nodes. */
548 s = &pfile->spec_nodes;
549 s->n_L = cpp_lookup (pfile, DSC("L"));
550 s->n_defined = cpp_lookup (pfile, DSC("defined"));
551 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
552 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
553 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
554 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
555 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
560 /* Free resources used by PFILE.
561 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
566 struct file_name_list *dir, *dirn;
567 cpp_context *context, *contextn;
569 while (CPP_BUFFER (pfile) != NULL)
570 cpp_pop_buffer (pfile);
572 if (pfile->macro_buffer)
574 free ((PTR) pfile->macro_buffer);
575 pfile->macro_buffer = NULL;
576 pfile->macro_buffer_len = 0;
579 deps_free (pfile->deps);
581 _cpp_cleanup_includes (pfile);
582 _cpp_cleanup_stacks (pfile);
583 _cpp_cleanup_hashtable (pfile);
585 _cpp_free_lookaheads (pfile);
587 _cpp_free_pool (&pfile->ident_pool);
588 _cpp_free_pool (&pfile->macro_pool);
589 _cpp_free_pool (&pfile->argument_pool);
591 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
598 for (context = pfile->base_context.next; context; context = contextn)
600 contextn = context->next;
606 /* This structure defines one built-in identifier. A node will be
607 entered in the hash table under the name NAME, with value VALUE (if
608 any). If flags has OPERATOR, the node's operator field is used; if
609 flags has BUILTIN the node's builtin field is used.
611 Two values are not compile time constants, so we tag
612 them in the FLAGS field instead:
613 VERS value is the global version_string, quoted
614 ULP value is the global user_label_prefix
616 Also, macros with CPLUS set in the flags field are entered only for C++. */
622 unsigned char builtin;
623 unsigned char operator;
624 unsigned short flags;
631 #define OPERATOR 0x10
633 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
634 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
635 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
636 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
637 static const struct builtin builtin_array[] =
639 B("__TIME__", BT_TIME),
640 B("__DATE__", BT_DATE),
641 B("__FILE__", BT_FILE),
642 B("__BASE_FILE__", BT_BASE_FILE),
643 B("__LINE__", BT_SPECLINE),
644 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
645 B("__STDC__", BT_STDC),
647 X("__VERSION__", VERS),
648 X("__USER_LABEL_PREFIX__", ULP),
649 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
650 C("__HAVE_BUILTIN_SETJMP__", "1"),
651 #ifndef NO_BUILTIN_SIZE_TYPE
652 C("__SIZE_TYPE__", SIZE_TYPE),
654 #ifndef NO_BUILTIN_PTRDIFF_TYPE
655 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
657 #ifndef NO_BUILTIN_WCHAR_TYPE
658 C("__WCHAR_TYPE__", WCHAR_TYPE),
660 #ifndef NO_BUILTIN_WINT_TYPE
661 C("__WINT_TYPE__", WINT_TYPE),
664 /* Named operators known to the preprocessor. These cannot be #defined
665 and always have their stated meaning. They are treated like normal
666 identifiers except for the type code and the meaning. Most of them
667 are only for C++ (but see iso646.h). */
668 O("and", CPP_AND_AND, CPLUS),
669 O("and_eq", CPP_AND_EQ, CPLUS),
670 O("bitand", CPP_AND, CPLUS),
671 O("bitor", CPP_OR, CPLUS),
672 O("compl", CPP_COMPL, CPLUS),
673 O("not", CPP_NOT, CPLUS),
674 O("not_eq", CPP_NOT_EQ, CPLUS),
675 O("or", CPP_OR_OR, CPLUS),
676 O("or_eq", CPP_OR_EQ, CPLUS),
677 O("xor", CPP_XOR, CPLUS),
678 O("xor_eq", CPP_XOR_EQ, CPLUS)
684 #define builtin_array_end \
685 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
687 /* Subroutine of cpp_start_read; reads the builtins table above and
688 enters the macros into the hash table. */
690 init_builtins (pfile)
693 const struct builtin *b;
695 for(b = builtin_array; b < builtin_array_end; b++)
697 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
700 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
703 if (b->flags & (OPERATOR | BUILTIN))
705 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
706 if (b->flags & OPERATOR)
708 hp->flags |= NODE_OPERATOR;
709 hp->value.operator = b->operator;
714 hp->flags |= NODE_BUILTIN;
715 hp->value.builtin = b->builtin;
718 else /* A standard macro of some kind. */
725 /* Allocate enough space for 'name "value"\n\0'. */
726 str = alloca (b->len + strlen (version_string) + 5);
727 sprintf (str, "%s \"%s\"\n", b->name, version_string);
732 val = CPP_OPTION (pfile, user_label_prefix);
736 /* Allocate enough space for "name value\n\0". */
737 str = alloca (b->len + strlen (val) + 3);
738 sprintf(str, "%s %s\n", b->name, val);
741 _cpp_define_builtin (pfile, str);
750 #undef builtin_array_end
752 /* And another subroutine. This one sets up the standard include path. */
754 init_standard_includes (pfile)
758 const struct default_include *p;
759 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
761 /* Several environment variables may add to the include search path.
762 CPATH specifies an additional list of directories to be searched
763 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
764 etc. specify an additional list of directories to be searched as
765 if specified with -isystem, for the language indicated. */
767 GET_ENV_PATH_LIST (path, "CPATH");
768 if (path != 0 && *path != 0)
769 path_include (pfile, path, BRACKET);
771 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
774 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
777 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
780 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
783 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
786 if (path != 0 && *path != 0)
787 path_include (pfile, path, SYSTEM);
789 /* Search "translated" versions of GNU directories.
790 These have /usr/local/lib/gcc... replaced by specd_prefix. */
791 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
793 /* Remove the `include' from /usr/local/lib/gcc.../include.
794 GCC_INCLUDE_DIR will always end in /include. */
795 int default_len = cpp_GCC_INCLUDE_DIR_len;
796 char *default_prefix = (char *) alloca (default_len + 1);
797 int specd_len = strlen (specd_prefix);
799 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
800 default_prefix[default_len] = '\0';
802 for (p = cpp_include_defaults; p->fname; p++)
804 /* Some standard dirs are only for C++. */
806 || (CPP_OPTION (pfile, cplusplus)
807 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
809 /* Does this dir start with the prefix? */
810 if (!memcmp (p->fname, default_prefix, default_len))
812 /* Yes; change prefix and add to search list. */
813 int flen = strlen (p->fname);
814 int this_len = specd_len + flen - default_len;
815 char *str = (char *) xmalloc (this_len + 1);
816 memcpy (str, specd_prefix, specd_len);
817 memcpy (str + specd_len,
818 p->fname + default_len,
819 flen - default_len + 1);
821 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
827 /* Search ordinary names for GNU include directories. */
828 for (p = cpp_include_defaults; p->fname; p++)
830 /* Some standard dirs are only for C++. */
832 || (CPP_OPTION (pfile, cplusplus)
833 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
835 char *str = xstrdup (update_path (p->fname, p->component));
836 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
841 /* Handles -imacro and -include from the command line. */
843 do_includes (pfile, p, scan)
845 struct pending_option *p;
850 struct pending_option *q;
852 /* Later: maybe update this to use the #include "" search path
853 if cpp_read_file fails. */
854 if (_cpp_read_file (pfile, p->arg) && scan)
855 cpp_scan_buffer_nooutput (pfile, 0);
862 /* This is called after options have been processed. Check options
863 for consistency, and setup for processing input from the file named
864 FNAME. (Use standard input if FNAME == NULL.) Return 1 on success,
868 cpp_start_read (pfile, fname)
872 struct pending_option *p, *q;
874 /* Set up the include search path now. */
875 if (! CPP_OPTION (pfile, no_standard_includes))
876 init_standard_includes (pfile);
878 merge_include_chains (pfile);
880 /* With -v, print the list of dirs to search. */
881 if (CPP_OPTION (pfile, verbose))
883 struct file_name_list *l;
884 fprintf (stderr, _("#include \"...\" search starts here:\n"));
885 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
887 if (l == CPP_OPTION (pfile, bracket_include))
888 fprintf (stderr, _("#include <...> search starts here:\n"));
889 fprintf (stderr, " %s\n", l->name);
891 fprintf (stderr, _("End of search list.\n"));
894 if (CPP_OPTION (pfile, in_fname) == NULL
895 || *CPP_OPTION (pfile, in_fname) == 0)
897 CPP_OPTION (pfile, in_fname) = fname;
898 if (CPP_OPTION (pfile, in_fname) == NULL)
899 CPP_OPTION (pfile, in_fname) = "";
901 if (CPP_OPTION (pfile, out_fname) == NULL)
902 CPP_OPTION (pfile, out_fname) = "";
904 if (CPP_OPTION (pfile, print_deps))
906 /* Set the default target (if there is none already). */
907 deps_add_default_target (pfile->deps, CPP_OPTION (pfile, in_fname));
909 if (CPP_OPTION (pfile, in_fname))
910 deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
913 /* Open the main input file. This must be done early, so we have a
914 buffer to stand on. */
915 if (!_cpp_read_file (pfile, fname))
918 /* Install __LINE__, etc. */
919 init_builtins (pfile);
921 /* Do -U's, -D's and -A's in the order they were seen. */
922 p = CPP_OPTION (pfile, pending)->directive_head;
925 (*p->handler) (pfile, p->arg);
930 pfile->done_initializing = 1;
932 /* The -imacros files can be scanned now, but the -include files
933 have to be pushed onto the buffer stack and processed later,
934 otherwise cppmain.c won't see the tokens. include_head was built
935 up as a stack, and popping this stack onto the buffer stack means
936 we preserve the order of the command line. */
937 do_includes (pfile, CPP_OPTION (pfile, pending)->imacros_head, 1);
938 do_includes (pfile, CPP_OPTION (pfile, pending)->include_head, 0);
940 free (CPP_OPTION (pfile, pending));
941 CPP_OPTION (pfile, pending) = NULL;
950 /* Stream on which to print the dependency information. */
951 FILE *deps_stream = 0;
952 const char *deps_mode = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
954 if (CPP_OPTION (pfile, deps_file) == 0)
955 deps_stream = stdout;
958 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
959 if (deps_stream == 0)
961 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
966 deps_write (pfile->deps, deps_stream, 72);
968 if (CPP_OPTION (pfile, deps_phony_targets))
969 deps_phony_targets (pfile->deps, deps_stream);
971 /* Don't close stdout. */
972 if (CPP_OPTION (pfile, deps_file))
974 if (ferror (deps_stream) || fclose (deps_stream) != 0)
975 cpp_fatal (pfile, "I/O error on output");
979 /* This is called at the end of preprocessing. It pops the
980 last buffer and writes dependency output. It should also
981 clear macro definitions, such that you could call cpp_start_read
982 with a new filename to restart processing. */
987 if (CPP_BUFFER (pfile))
989 cpp_ice (pfile, "buffers still stacked in cpp_finish");
990 while (CPP_BUFFER (pfile))
991 cpp_pop_buffer (pfile);
994 /* Don't write the deps file if preprocessing has failed. */
995 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
998 /* Report on headers that could use multiple include guards. */
999 if (CPP_OPTION (pfile, print_include_names))
1000 _cpp_report_missing_guards (pfile);
1004 new_pending_directive (pend, text, handler)
1005 struct cpp_pending *pend;
1007 cl_directive_handler handler;
1009 struct pending_option *o = (struct pending_option *)
1010 xmalloc (sizeof (struct pending_option));
1014 o->handler = handler;
1015 APPEND (pend, directive, o);
1018 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1019 I.e. a const string initializer with parens around it. That is
1020 what N_("string") resolves to, so we make no_* be macros instead. */
1021 #define no_arg N_("Argument missing after %s")
1022 #define no_ass N_("Assertion missing after %s")
1023 #define no_dir N_("Directory name missing after %s")
1024 #define no_fil N_("File name missing after %s")
1025 #define no_mac N_("Macro name missing after %s")
1026 #define no_pth N_("Path name missing after %s")
1027 #define no_num N_("Number missing after %s")
1028 #define no_tgt N_("Target missing after %s")
1030 /* This is the list of all command line options, with the leading
1031 "-" removed. It must be sorted in ASCII collating order. */
1032 #define COMMAND_LINE_OPTIONS \
1033 DEF_OPT("", 0, OPT_stdin_stdout) \
1034 DEF_OPT("$", 0, OPT_dollar) \
1035 DEF_OPT("+", 0, OPT_plus) \
1036 DEF_OPT("-help", 0, OPT__help) \
1037 DEF_OPT("-target-help", 0, OPT_target__help) \
1038 DEF_OPT("-version", 0, OPT__version) \
1039 DEF_OPT("A", no_ass, OPT_A) \
1040 DEF_OPT("C", 0, OPT_C) \
1041 DEF_OPT("D", no_mac, OPT_D) \
1042 DEF_OPT("H", 0, OPT_H) \
1043 DEF_OPT("I", no_dir, OPT_I) \
1044 DEF_OPT("M", 0, OPT_M) \
1045 DEF_OPT("MD", no_fil, OPT_MD) \
1046 DEF_OPT("MF", no_fil, OPT_MF) \
1047 DEF_OPT("MG", 0, OPT_MG) \
1048 DEF_OPT("MM", 0, OPT_MM) \
1049 DEF_OPT("MMD", no_fil, OPT_MMD) \
1050 DEF_OPT("MP", 0, OPT_MP) \
1051 DEF_OPT("MQ", no_tgt, OPT_MQ) \
1052 DEF_OPT("MT", no_tgt, OPT_MT) \
1053 DEF_OPT("P", 0, OPT_P) \
1054 DEF_OPT("U", no_mac, OPT_U) \
1055 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1056 DEF_OPT("d", no_arg, OPT_d) \
1057 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1058 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1059 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1060 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1061 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1062 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1063 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1064 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1065 DEF_OPT("h", 0, OPT_h) \
1066 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1067 DEF_OPT("imacros", no_fil, OPT_imacros) \
1068 DEF_OPT("include", no_fil, OPT_include) \
1069 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1070 DEF_OPT("isystem", no_dir, OPT_isystem) \
1071 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1072 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1073 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1074 DEF_OPT("lang-c", 0, OPT_lang_c) \
1075 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1076 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1077 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1078 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1079 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1080 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1081 DEF_OPT("o", no_fil, OPT_o) \
1082 DEF_OPT("pedantic", 0, OPT_pedantic) \
1083 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1084 DEF_OPT("remap", 0, OPT_remap) \
1085 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1086 DEF_OPT("std=c89", 0, OPT_std_c89) \
1087 DEF_OPT("std=c99", 0, OPT_std_c99) \
1088 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1089 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1090 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1091 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1092 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1093 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1094 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1095 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1096 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1097 DEF_OPT("v", 0, OPT_v) \
1098 DEF_OPT("version", 0, OPT_version) \
1099 DEF_OPT("w", 0, OPT_w)
1101 #define DEF_OPT(text, msg, code) code,
1104 COMMAND_LINE_OPTIONS
1111 const char *opt_text;
1114 enum opt_code opt_code;
1117 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1119 static struct cl_option cl_options[] =
1121 static const struct cl_option cl_options[] =
1124 COMMAND_LINE_OPTIONS
1127 #undef COMMAND_LINE_OPTIONS
1129 /* Perform a binary search to find which, if any, option the given
1130 command-line matches. Returns its index in the option array,
1131 negative on failure. Complications arise since some options can be
1132 suffixed with an argument, and multiple complete matches can occur,
1133 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1134 accept options beginning with -g and -W that we do not recognise,
1135 but not to swallow any subsequent command line argument; these are
1136 handled as special cases in cpp_handle_option. */
1138 parse_option (input)
1141 unsigned int md, mn, mx;
1152 opt_len = cl_options[md].opt_len;
1153 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1161 if (input[opt_len] == '\0')
1163 /* We were passed more text. If the option takes an argument,
1164 we may match a later option or we may have been passed the
1165 argument. The longest possible option match succeeds.
1166 If the option takes no arguments we have not matched and
1167 continue the search (e.g. input="stdc++" match was "stdc"). */
1169 if (cl_options[md].msg)
1171 /* Scan forwards. If we get an exact match, return it.
1172 Otherwise, return the longest option-accepting match.
1173 This loops no more than twice with current options. */
1175 for (; mn < N_OPTS; mn++)
1177 opt_len = cl_options[mn].opt_len;
1178 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1180 if (input[opt_len] == '\0')
1182 if (cl_options[mn].msg)
1193 /* Handle one command-line option in (argc, argv).
1194 Can be called multiple times, to handle multiple sets of options.
1195 Returns number of strings consumed. */
1198 cpp_handle_option (pfile, argc, argv)
1204 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1206 if (argv[i][0] != '-')
1208 if (CPP_OPTION (pfile, out_fname) != NULL)
1209 cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
1211 else if (CPP_OPTION (pfile, in_fname) != NULL)
1212 CPP_OPTION (pfile, out_fname) = argv[i];
1214 CPP_OPTION (pfile, in_fname) = argv[i];
1218 enum opt_code opt_code;
1220 const char *arg = 0;
1222 /* Skip over '-'. */
1223 opt_index = parse_option (&argv[i][1]);
1227 opt_code = cl_options[opt_index].opt_code;
1228 if (cl_options[opt_index].msg)
1230 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1232 /* Yuk. Special case for -W as it must not swallow
1233 up any following argument. If this becomes common, add
1234 another field to the cl_options table. */
1235 if (arg[0] == '\0' && opt_code != OPT_W)
1240 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1248 case N_OPTS: /* Shut GCC up. */
1250 case OPT_fleading_underscore:
1251 CPP_OPTION (pfile, user_label_prefix) = "_";
1253 case OPT_fno_leading_underscore:
1254 CPP_OPTION (pfile, user_label_prefix) = "";
1256 case OPT_fno_operator_names:
1257 CPP_OPTION (pfile, operator_names) = 0;
1259 case OPT_fpreprocessed:
1260 CPP_OPTION (pfile, preprocessed) = 1;
1262 case OPT_fno_preprocessed:
1263 CPP_OPTION (pfile, preprocessed) = 0;
1265 case OPT_fshow_column:
1266 CPP_OPTION (pfile, show_column) = 1;
1268 case OPT_fno_show_column:
1269 CPP_OPTION (pfile, show_column) = 0;
1272 /* Silently ignore empty string, non-longs and silly values. */
1276 long tabstop = strtol (arg, &endptr, 10);
1277 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1278 CPP_OPTION (pfile, tabstop) = tabstop;
1282 CPP_OPTION (pfile, inhibit_warnings) = 1;
1287 pfile->help_only = 1;
1289 case OPT_target__help:
1290 /* Print if any target specific options. cpplib has none, but
1291 make sure help_only gets set. */
1292 pfile->help_only = 1;
1295 /* --version inhibits compilation, -version doesn't. -v means
1296 verbose and -version. Historical reasons, don't ask. */
1298 pfile->help_only = 1;
1301 CPP_OPTION (pfile, verbose) = 1;
1306 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1307 #ifdef TARGET_VERSION
1310 fputc ('\n', stderr);
1314 CPP_OPTION (pfile, discard_comments) = 0;
1317 CPP_OPTION (pfile, no_line_commands) = 1;
1319 case OPT_dollar: /* Don't include $ in identifiers. */
1320 CPP_OPTION (pfile, dollars_in_ident) = 0;
1323 CPP_OPTION (pfile, print_include_names) = 1;
1326 new_pending_directive (pend, arg, cpp_define);
1328 case OPT_pedantic_errors:
1329 CPP_OPTION (pfile, pedantic_errors) = 1;
1332 CPP_OPTION (pfile, pedantic) = 1;
1335 CPP_OPTION (pfile, trigraphs) = 1;
1338 CPP_OPTION (pfile, cplusplus) = 1;
1339 CPP_OPTION (pfile, cplusplus_comments) = 1;
1342 CPP_OPTION (pfile, remap) = 1;
1345 CPP_OPTION (pfile, include_prefix) = arg;
1346 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1349 set_lang (pfile, CLK_GNUC89);
1351 case OPT_lang_cplusplus:
1352 set_lang (pfile, CLK_GNUCXX);
1355 set_lang (pfile, CLK_OBJC);
1357 case OPT_lang_objcplusplus:
1358 set_lang (pfile, CLK_OBJCXX);
1361 set_lang (pfile, CLK_ASM);
1363 case OPT_std_cplusplus98:
1364 set_lang (pfile, CLK_CXX98);
1367 set_lang (pfile, CLK_GNUC89);
1371 set_lang (pfile, CLK_GNUC99);
1373 case OPT_std_iso9899_199409:
1374 set_lang (pfile, CLK_STDC94);
1376 case OPT_std_iso9899_1990:
1379 set_lang (pfile, CLK_STDC89);
1381 case OPT_std_iso9899_199x:
1382 case OPT_std_iso9899_1999:
1385 set_lang (pfile, CLK_STDC99);
1388 /* -nostdinc causes no default include directories.
1389 You must specify all include-file directories with -I. */
1390 CPP_OPTION (pfile, no_standard_includes) = 1;
1392 case OPT_nostdincplusplus:
1393 /* -nostdinc++ causes no default C++-specific include directories. */
1394 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1397 if (CPP_OPTION (pfile, out_fname) != NULL)
1399 cpp_fatal (pfile, "Output filename specified twice");
1402 CPP_OPTION (pfile, out_fname) = arg;
1403 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1404 CPP_OPTION (pfile, out_fname) = "";
1406 case OPT_stdin_stdout:
1407 /* JF handle '-' as file name meaning stdin or stdout. */
1408 if (CPP_OPTION (pfile, in_fname) == NULL)
1409 CPP_OPTION (pfile, in_fname) = "";
1410 else if (CPP_OPTION (pfile, out_fname) == NULL)
1411 CPP_OPTION (pfile, out_fname) = "";
1414 /* Args to -d specify what parts of macros to dump.
1415 Silently ignore unrecognised options; they may
1416 be aimed at the compiler proper. */
1420 while ((c = *arg++) != '\0')
1424 CPP_OPTION (pfile, dump_macros) = dump_only;
1425 CPP_OPTION (pfile, no_output) = 1;
1428 CPP_OPTION (pfile, dump_macros) = dump_names;
1431 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1434 CPP_OPTION (pfile, dump_includes) = 1;
1441 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1444 CPP_OPTION (pfile, print_deps) = 2;
1447 CPP_OPTION (pfile, print_deps) = 1;
1450 CPP_OPTION (pfile, deps_file) = arg;
1453 CPP_OPTION (pfile, deps_phony_targets) = 1;
1457 /* Add a target. -MQ quotes for Make. */
1458 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1461 /* -MD and -MMD for cpp0 are deprecated and undocumented
1462 (use -M or -MM with -MF instead), and probably should be
1463 removed with the next major GCC version. For the moment
1464 we allow these for the benefit of Automake 1.4, which
1465 uses these when dependency tracking is enabled. Automake
1466 1.5 will fix this. */
1468 CPP_OPTION (pfile, print_deps) = 2;
1469 CPP_OPTION (pfile, deps_file) = arg;
1472 CPP_OPTION (pfile, print_deps) = 1;
1473 CPP_OPTION (pfile, deps_file) = arg;
1479 /* -A with an argument beginning with '-' acts as
1480 #unassert on whatever immediately follows the '-'.
1481 If "-" is the whole argument, we eliminate all
1482 predefined macros and assertions, including those
1483 that were specified earlier on the command line.
1484 That way we can get rid of any that were passed
1485 automatically in from GCC. */
1489 struct pending_option *o1, *o2;
1491 o1 = pend->directive_head;
1498 pend->directive_head = NULL;
1499 pend->directive_tail = NULL;
1502 new_pending_directive (pend, arg + 1, cpp_unassert);
1505 new_pending_directive (pend, arg, cpp_assert);
1508 new_pending_directive (pend, arg, cpp_undef);
1510 case OPT_I: /* Add directory to path for includes. */
1511 if (!strcmp (arg, "-"))
1514 Use the preceding -I directories for #include "..."
1515 but not #include <...>.
1516 Don't search the directory of the present file
1517 for #include "...". (Note that -I. -I- is not the same as
1518 the default setup; -I. uses the compiler's working dir.) */
1519 if (! CPP_OPTION (pfile, ignore_srcdir))
1521 pend->quote_head = pend->brack_head;
1522 pend->quote_tail = pend->brack_tail;
1523 pend->brack_head = 0;
1524 pend->brack_tail = 0;
1525 CPP_OPTION (pfile, ignore_srcdir) = 1;
1529 cpp_fatal (pfile, "-I- specified twice");
1534 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1537 /* Add directory to beginning of system include path, as a system
1538 include directory. */
1539 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1543 struct pending_option *o = (struct pending_option *)
1544 xmalloc (sizeof (struct pending_option));
1547 /* This list has to be built in reverse order so that
1548 when cpp_start_read pushes all the -include files onto
1549 the buffer stack, they will be scanned in forward order. */
1550 o->next = pend->include_head;
1551 pend->include_head = o;
1556 struct pending_option *o = (struct pending_option *)
1557 xmalloc (sizeof (struct pending_option));
1561 APPEND (pend, imacros, o);
1564 case OPT_iwithprefix:
1565 /* Add directory to end of path for includes,
1566 with the default prefix at the front of its name. */
1568 case OPT_iwithprefixbefore:
1569 /* Add directory to main path for includes,
1570 with the default prefix at the front of its name. */
1577 if (CPP_OPTION (pfile, include_prefix) != 0)
1579 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1580 fname = xmalloc (ipl + len + 1);
1581 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1582 memcpy (fname + ipl, arg, len + 1);
1584 else if (cpp_GCC_INCLUDE_DIR_len)
1586 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1587 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1588 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1591 fname = xstrdup (arg);
1593 append_include_chain (pfile, fname,
1594 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1598 /* Add directory to end of path for includes. */
1599 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1602 /* Silently ignore unrecognised options. */
1603 if (!strcmp (argv[i], "-Wall"))
1605 CPP_OPTION (pfile, warn_trigraphs) = 1;
1606 CPP_OPTION (pfile, warn_comments) = 1;
1608 else if (!strcmp (argv[i], "-Wtraditional"))
1609 CPP_OPTION (pfile, warn_traditional) = 1;
1610 else if (!strcmp (argv[i], "-Wtrigraphs"))
1611 CPP_OPTION (pfile, warn_trigraphs) = 1;
1612 else if (!strcmp (argv[i], "-Wcomment"))
1613 CPP_OPTION (pfile, warn_comments) = 1;
1614 else if (!strcmp (argv[i], "-Wcomments"))
1615 CPP_OPTION (pfile, warn_comments) = 1;
1616 else if (!strcmp (argv[i], "-Wundef"))
1617 CPP_OPTION (pfile, warn_undef) = 1;
1618 else if (!strcmp (argv[i], "-Wimport"))
1619 CPP_OPTION (pfile, warn_import) = 1;
1620 else if (!strcmp (argv[i], "-Werror"))
1621 CPP_OPTION (pfile, warnings_are_errors) = 1;
1622 else if (!strcmp (argv[i], "-Wsystem-headers"))
1623 CPP_OPTION (pfile, warn_system_headers) = 1;
1624 else if (!strcmp (argv[i], "-Wno-traditional"))
1625 CPP_OPTION (pfile, warn_traditional) = 0;
1626 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1627 CPP_OPTION (pfile, warn_trigraphs) = 0;
1628 else if (!strcmp (argv[i], "-Wno-comment"))
1629 CPP_OPTION (pfile, warn_comments) = 0;
1630 else if (!strcmp (argv[i], "-Wno-comments"))
1631 CPP_OPTION (pfile, warn_comments) = 0;
1632 else if (!strcmp (argv[i], "-Wno-undef"))
1633 CPP_OPTION (pfile, warn_undef) = 0;
1634 else if (!strcmp (argv[i], "-Wno-import"))
1635 CPP_OPTION (pfile, warn_import) = 0;
1636 else if (!strcmp (argv[i], "-Wno-error"))
1637 CPP_OPTION (pfile, warnings_are_errors) = 0;
1638 else if (!strcmp (argv[i], "-Wno-system-headers"))
1639 CPP_OPTION (pfile, warn_system_headers) = 0;
1646 /* Handle command-line options in (argc, argv).
1647 Can be called multiple times, to handle multiple sets of options.
1648 Returns if an unrecognized option is seen.
1649 Returns number of strings consumed. */
1651 cpp_handle_options (pfile, argc, argv)
1657 int strings_processed;
1659 for (i = 0; i < argc; i += strings_processed)
1661 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1662 if (strings_processed == 0)
1669 /* Extra processing when all options are parsed, after all calls to
1670 cpp_handle_option[s]. Consistency checks etc. */
1672 cpp_post_options (pfile)
1675 /* -Wtraditional is not useful in C++ mode. */
1676 if (CPP_OPTION (pfile, cplusplus))
1677 CPP_OPTION (pfile, warn_traditional) = 0;
1679 /* Set this if it hasn't been set already. */
1680 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1681 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1683 /* We need to do this after option processing and before
1684 cpp_start_read, as cppmain.c relies on the options->no_output to
1685 set its callbacks correctly before calling cpp_start_read. */
1686 init_dependency_output (pfile);
1688 /* After checking the environment variables, check if -M or -MM has
1689 not been specified, but other -M options have. */
1690 if (CPP_OPTION (pfile, print_deps) == 0 &&
1691 (CPP_OPTION (pfile, print_deps_missing_files)
1692 || CPP_OPTION (pfile, deps_file)
1693 || CPP_OPTION (pfile, deps_phony_targets)))
1694 cpp_fatal (pfile, "you must additionally specify either -M or -MM");
1697 /* Set up dependency-file output. */
1699 init_dependency_output (pfile)
1702 char *spec, *s, *output_file;
1704 /* Either of two environment variables can specify output of deps.
1705 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1706 where OUTPUT_FILE is the file to write deps info to
1707 and DEPS_TARGET is the target to mention in the deps. */
1709 if (CPP_OPTION (pfile, print_deps) == 0)
1711 spec = getenv ("DEPENDENCIES_OUTPUT");
1713 CPP_OPTION (pfile, print_deps) = 1;
1716 spec = getenv ("SUNPRO_DEPENDENCIES");
1718 CPP_OPTION (pfile, print_deps) = 2;
1723 /* Find the space before the DEPS_TARGET, if there is one. */
1724 s = strchr (spec, ' ');
1727 /* Let the caller perform MAKE quoting. */
1728 deps_add_target (pfile->deps, s + 1, 0);
1729 output_file = (char *) xmalloc (s - spec + 1);
1730 memcpy (output_file, spec, s - spec);
1731 output_file[s - spec] = 0;
1736 /* Command line overrides environment variables. */
1737 if (CPP_OPTION (pfile, deps_file) == 0)
1738 CPP_OPTION (pfile, deps_file) = output_file;
1739 CPP_OPTION (pfile, print_deps_append) = 1;
1742 /* If dependencies go to standard output, or -MG is used, we should
1743 suppress output. The user may be requesting other stuff to
1744 stdout, with -dM, -v etc. We let them shoot themselves in the
1746 if (CPP_OPTION (pfile, deps_file) == 0
1747 || CPP_OPTION (pfile, print_deps_missing_files))
1748 CPP_OPTION (pfile, no_output) = 1;
1754 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1755 /* To keep the lines from getting too long for some compilers, limit
1756 to about 500 characters (6 lines) per chunk. */
1759 -include <file> Include the contents of <file> before other files\n\
1760 -imacros <file> Accept definition of macros in <file>\n\
1761 -iprefix <path> Specify <path> as a prefix for next two options\n\
1762 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1763 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1764 -isystem <dir> Add <dir> to the start of the system include path\n\
1767 -idirafter <dir> Add <dir> to the end of the system include path\n\
1768 -I <dir> Add <dir> to the end of the main include path\n\
1769 -I- Fine-grained include path control; see info docs\n\
1770 -nostdinc Do not search system include directories\n\
1771 (dirs specified with -isystem will still be used)\n\
1772 -nostdinc++ Do not search system include directories for C++\n\
1773 -o <file> Put output into <file>\n\
1776 -pedantic Issue all warnings demanded by strict ISO C\n\
1777 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1778 -trigraphs Support ISO C trigraphs\n\
1779 -lang-c Assume that the input sources are in C\n\
1780 -lang-c89 Assume that the input sources are in C89\n\
1783 -lang-c++ Assume that the input sources are in C++\n\
1784 -lang-objc Assume that the input sources are in ObjectiveC\n\
1785 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1786 -lang-asm Assume that the input sources are in assembler\n\
1789 -std=<std name> Specify the conformance standard; one of:\n\
1790 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1791 iso9899:199409, iso9899:1999\n\
1792 -+ Allow parsing of C++ style features\n\
1793 -w Inhibit warning messages\n\
1794 -Wtrigraphs Warn if trigraphs are encountered\n\
1795 -Wno-trigraphs Do not warn about trigraphs\n\
1796 -Wcomment{s} Warn if one comment starts inside another\n\
1799 -Wno-comment{s} Do not warn about comments\n\
1800 -Wtraditional Warn about features not present in traditional C\n\
1801 -Wno-traditional Do not warn about traditional C\n\
1802 -Wundef Warn if an undefined macro is used by #if\n\
1803 -Wno-undef Do not warn about testing undefined macros\n\
1804 -Wimport Warn about the use of the #import directive\n\
1807 -Wno-import Do not warn about the use of #import\n\
1808 -Werror Treat all warnings as errors\n\
1809 -Wno-error Do not treat warnings as errors\n\
1810 -Wsystem-headers Do not suppress warnings from system headers\n\
1811 -Wno-system-headers Suppress warnings from system headers\n\
1812 -Wall Enable all preprocessor warnings\n\
1815 -M Generate make dependencies\n\
1816 -MM As -M, but ignore system header files\n\
1817 -MF <file> Write dependency output to the given file\n\
1818 -MG Treat missing header file as generated files\n\
1821 -MP Generate phony targets for all headers\n\
1822 -MQ <target> Add a MAKE-quoted target\n\
1823 -MT <target> Add an unquoted target\n\
1826 -D<macro> Define a <macro> with string '1' as its value\n\
1827 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1828 -A<question> (<answer>) Assert the <answer> to <question>\n\
1829 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1830 -U<macro> Undefine <macro> \n\
1831 -v Display the version number\n\
1834 -H Print the name of header files as they are used\n\
1835 -C Do not discard comments\n\
1836 -dM Display a list of macro definitions active at end\n\
1837 -dD Preserve macro definitions in output\n\
1838 -dN As -dD except that only the names are preserved\n\
1839 -dI Include #include directives in the output\n\
1842 -ftabstop=<number> Distance between tab stops for column reporting\n\
1843 -P Do not generate #line directives\n\
1844 -$ Do not allow '$' in identifiers\n\
1845 -remap Remap file names when including files.\n\
1846 --version Display version information\n\
1847 -h or --help Display this information\n\