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)
206 int cxx_aware ATTRIBUTE_UNUSED;
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)
375 CPP_OPTION (pfile, lang) = lang;
376 CPP_OPTION (pfile, objc) = 0;
377 CPP_OPTION (pfile, cplusplus) = 0;
378 CPP_OPTION (pfile, extended_numbers) = 1; /* Allowed in GNU C and C99. */
384 CPP_OPTION (pfile, trigraphs) = 0;
385 CPP_OPTION (pfile, dollars_in_ident) = 1;
386 CPP_OPTION (pfile, cplusplus_comments) = 1;
387 CPP_OPTION (pfile, digraphs) = 1;
388 CPP_OPTION (pfile, c99) = 1;
391 CPP_OPTION (pfile, trigraphs) = 0;
392 CPP_OPTION (pfile, dollars_in_ident) = 1;
393 CPP_OPTION (pfile, cplusplus_comments) = 1;
394 CPP_OPTION (pfile, digraphs) = 1;
395 CPP_OPTION (pfile, c99) = 0;
401 CPP_OPTION (pfile, trigraphs) = 1;
402 CPP_OPTION (pfile, dollars_in_ident) = 0;
403 CPP_OPTION (pfile, cplusplus_comments) = 0;
404 CPP_OPTION (pfile, digraphs) = lang == CLK_STDC94;
405 CPP_OPTION (pfile, c99) = 0;
406 CPP_OPTION (pfile, extended_numbers) = 0;
409 CPP_OPTION (pfile, trigraphs) = 1;
410 CPP_OPTION (pfile, dollars_in_ident) = 0;
411 CPP_OPTION (pfile, cplusplus_comments) = 1;
412 CPP_OPTION (pfile, digraphs) = 1;
413 CPP_OPTION (pfile, c99) = 1;
418 CPP_OPTION (pfile, cplusplus) = 1;
420 CPP_OPTION (pfile, trigraphs) = 0;
421 CPP_OPTION (pfile, dollars_in_ident) = 1;
422 CPP_OPTION (pfile, cplusplus_comments) = 1;
423 CPP_OPTION (pfile, digraphs) = 1;
424 CPP_OPTION (pfile, c99) = 0;
425 CPP_OPTION (pfile, objc) = 1;
431 CPP_OPTION (pfile, cplusplus) = 1;
432 CPP_OPTION (pfile, trigraphs) = lang == CLK_CXX98;
433 CPP_OPTION (pfile, dollars_in_ident) = lang == CLK_GNUCXX;
434 CPP_OPTION (pfile, cplusplus_comments) = 1;
435 CPP_OPTION (pfile, digraphs) = 1;
436 CPP_OPTION (pfile, c99) = 0;
441 CPP_OPTION (pfile, trigraphs) = 0;
442 CPP_OPTION (pfile, dollars_in_ident) = 0; /* Maybe not? */
443 CPP_OPTION (pfile, cplusplus_comments) = 1;
444 CPP_OPTION (pfile, digraphs) = 0;
445 CPP_OPTION (pfile, c99) = 0;
451 static int opt_comp PARAMS ((const void *, const void *));
453 /* Run-time sorting of options array. */
458 return strcmp (((struct cl_option *) p1)->opt_text,
459 ((struct cl_option *) p2)->opt_text);
463 /* init initializes library global state. It might not need to
464 do anything depending on the platform and compiler. */
469 static int initialized = 0;
476 /* For non-ASCII hosts, the cl_options array needs to be sorted at
478 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
481 /* Set up the trigraph map. This doesn't need to do anything if
482 we were compiled with a compiler that supports C99 designated
484 init_trigraph_map ();
488 /* Initialize a cpp_reader structure. */
490 cpp_create_reader (lang)
493 struct spec_nodes *s;
496 /* Initialise this instance of the library if it hasn't been already. */
499 pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
501 set_lang (pfile, lang);
502 CPP_OPTION (pfile, warn_import) = 1;
503 CPP_OPTION (pfile, discard_comments) = 1;
504 CPP_OPTION (pfile, show_column) = 1;
505 CPP_OPTION (pfile, tabstop) = 8;
506 CPP_OPTION (pfile, operator_names) = 1;
508 CPP_OPTION (pfile, pending) =
509 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
511 /* It's simplest to just create this struct whether or not it will
513 pfile->deps = deps_init ();
515 /* Initialize lexer state. */
516 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
518 /* Indicate date and time not yet calculated. */
519 pfile->date.type = CPP_EOF;
521 /* Initialise the base context. */
522 pfile->context = &pfile->base_context;
523 pfile->base_context.macro = 0;
524 pfile->base_context.prev = pfile->base_context.next = 0;
526 /* Identifier pool initially 8K. Unaligned, permanent pool. */
527 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
529 /* Argument pool initially 8K. Aligned, temporary pool. */
530 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
532 /* Macro pool initially 8K. Aligned, permanent pool. */
533 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
535 _cpp_init_hashtable (pfile);
536 _cpp_init_stacks (pfile);
537 _cpp_init_includes (pfile);
538 _cpp_init_internal_pragmas (pfile);
540 /* Initialize the special nodes. */
541 s = &pfile->spec_nodes;
542 s->n_L = cpp_lookup (pfile, DSC("L"));
543 s->n_defined = cpp_lookup (pfile, DSC("defined"));
544 s->n_true = cpp_lookup (pfile, DSC("true"));
545 s->n_false = cpp_lookup (pfile, DSC("false"));
546 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
547 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
548 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
549 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
550 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
555 /* Free resources used by PFILE. Accessing PFILE after this function
556 returns leads to undefined behaviour. */
562 struct file_name_list *dir, *dirn;
563 cpp_context *context, *contextn;
565 while (CPP_BUFFER (pfile) != NULL)
566 cpp_pop_buffer (pfile);
568 if (pfile->macro_buffer)
570 free ((PTR) pfile->macro_buffer);
571 pfile->macro_buffer = NULL;
572 pfile->macro_buffer_len = 0;
575 deps_free (pfile->deps);
577 _cpp_cleanup_includes (pfile);
578 _cpp_cleanup_stacks (pfile);
579 _cpp_cleanup_hashtable (pfile);
581 _cpp_free_lookaheads (pfile);
583 _cpp_free_pool (&pfile->ident_pool);
584 _cpp_free_pool (&pfile->macro_pool);
585 _cpp_free_pool (&pfile->argument_pool);
587 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
594 for (context = pfile->base_context.next; context; context = contextn)
596 contextn = context->next;
600 result = pfile->errors;
607 /* This structure defines one built-in identifier. A node will be
608 entered in the hash table under the name NAME, with value VALUE (if
609 any). If flags has OPERATOR, the node's operator field is used; if
610 flags has BUILTIN the node's builtin field is used.
612 Two values are not compile time constants, so we tag
613 them in the FLAGS field instead:
614 VERS value is the global version_string, quoted
615 ULP value is the global user_label_prefix
617 Also, macros with CPLUS set in the flags field are entered only for C++. */
623 unsigned char builtin;
624 unsigned char operator;
625 unsigned short flags;
632 #define OPERATOR 0x10
634 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
635 #define BC(n, t) { U n, 0, t, 0, BUILTIN | CPLUS, sizeof n - 1 }
636 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
637 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
638 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
639 static const struct builtin builtin_array[] =
641 B("__TIME__", BT_TIME),
642 B("__DATE__", BT_DATE),
643 B("__FILE__", BT_FILE),
644 B("__BASE_FILE__", BT_BASE_FILE),
645 B("__LINE__", BT_SPECLINE),
646 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
647 B("__STDC__", BT_STDC),
648 BC("__GXX_WEAK__", BT_WEAK),
650 X("__VERSION__", VERS),
651 X("__USER_LABEL_PREFIX__", ULP),
652 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
653 C("__HAVE_BUILTIN_SETJMP__", "1"),
654 #ifndef NO_BUILTIN_SIZE_TYPE
655 C("__SIZE_TYPE__", SIZE_TYPE),
657 #ifndef NO_BUILTIN_PTRDIFF_TYPE
658 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
660 #ifndef NO_BUILTIN_WCHAR_TYPE
661 C("__WCHAR_TYPE__", WCHAR_TYPE),
663 #ifndef NO_BUILTIN_WINT_TYPE
664 C("__WINT_TYPE__", WINT_TYPE),
667 /* Named operators known to the preprocessor. These cannot be #defined
668 and always have their stated meaning. They are treated like normal
669 identifiers except for the type code and the meaning. Most of them
670 are only for C++ (but see iso646.h). */
671 O("and", CPP_AND_AND, CPLUS),
672 O("and_eq", CPP_AND_EQ, CPLUS),
673 O("bitand", CPP_AND, CPLUS),
674 O("bitor", CPP_OR, CPLUS),
675 O("compl", CPP_COMPL, CPLUS),
676 O("not", CPP_NOT, CPLUS),
677 O("not_eq", CPP_NOT_EQ, CPLUS),
678 O("or", CPP_OR_OR, CPLUS),
679 O("or_eq", CPP_OR_EQ, CPLUS),
680 O("xor", CPP_XOR, CPLUS),
681 O("xor_eq", CPP_XOR_EQ, CPLUS)
687 #define builtin_array_end \
688 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
690 /* Subroutine of cpp_start_read; reads the builtins table above and
691 enters the macros into the hash table. */
693 init_builtins (pfile)
696 const struct builtin *b;
698 for(b = builtin_array; b < builtin_array_end; b++)
700 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
703 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
706 if (b->flags & (OPERATOR | BUILTIN))
708 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
709 if (b->flags & OPERATOR)
711 hp->flags |= NODE_OPERATOR;
712 hp->value.operator = b->operator;
717 hp->flags |= NODE_BUILTIN;
718 hp->value.builtin = b->builtin;
721 else /* A standard macro of some kind. */
728 /* Allocate enough space for 'name "value"\n\0'. */
729 str = alloca (b->len + strlen (version_string) + 5);
730 sprintf (str, "%s \"%s\"\n", b->name, version_string);
735 val = CPP_OPTION (pfile, user_label_prefix);
739 /* Allocate enough space for "name value\n\0". */
740 str = alloca (b->len + strlen (val) + 3);
741 sprintf(str, "%s %s\n", b->name, val);
744 _cpp_define_builtin (pfile, str);
748 if (CPP_OPTION (pfile, cplusplus))
749 _cpp_define_builtin (pfile, "__cplusplus 1");
750 if (CPP_OPTION (pfile, objc))
751 _cpp_define_builtin (pfile, "__OBJC__ 1");
753 if (CPP_OPTION (pfile, lang) == CLK_STDC94)
754 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
755 else if (CPP_OPTION (pfile, c99))
756 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
758 if (CPP_OPTION (pfile, lang) == CLK_STDC89
759 || CPP_OPTION (pfile, lang) == CLK_STDC94
760 || CPP_OPTION (pfile, lang) == CLK_STDC99)
761 _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1");
762 else if (CPP_OPTION (pfile, lang) == CLK_ASM)
763 _cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
770 #undef builtin_array_end
772 /* And another subroutine. This one sets up the standard include path. */
774 init_standard_includes (pfile)
778 const struct default_include *p;
779 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
781 /* Several environment variables may add to the include search path.
782 CPATH specifies an additional list of directories to be searched
783 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
784 etc. specify an additional list of directories to be searched as
785 if specified with -isystem, for the language indicated. */
787 GET_ENV_PATH_LIST (path, "CPATH");
788 if (path != 0 && *path != 0)
789 path_include (pfile, path, BRACKET);
791 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
794 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
797 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
800 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
803 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
806 if (path != 0 && *path != 0)
807 path_include (pfile, path, SYSTEM);
809 /* Search "translated" versions of GNU directories.
810 These have /usr/local/lib/gcc... replaced by specd_prefix. */
811 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
813 /* Remove the `include' from /usr/local/lib/gcc.../include.
814 GCC_INCLUDE_DIR will always end in /include. */
815 int default_len = cpp_GCC_INCLUDE_DIR_len;
816 char *default_prefix = (char *) alloca (default_len + 1);
817 int specd_len = strlen (specd_prefix);
819 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
820 default_prefix[default_len] = '\0';
822 for (p = cpp_include_defaults; p->fname; p++)
824 /* Some standard dirs are only for C++. */
826 || (CPP_OPTION (pfile, cplusplus)
827 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
829 /* Does this dir start with the prefix? */
830 if (!memcmp (p->fname, default_prefix, default_len))
832 /* Yes; change prefix and add to search list. */
833 int flen = strlen (p->fname);
834 int this_len = specd_len + flen - default_len;
835 char *str = (char *) xmalloc (this_len + 1);
836 memcpy (str, specd_prefix, specd_len);
837 memcpy (str + specd_len,
838 p->fname + default_len,
839 flen - default_len + 1);
841 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
847 /* Search ordinary names for GNU include directories. */
848 for (p = cpp_include_defaults; p->fname; p++)
850 /* Some standard dirs are only for C++. */
852 || (CPP_OPTION (pfile, cplusplus)
853 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
855 char *str = xstrdup (update_path (p->fname, p->component));
856 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
861 /* Handles -imacro and -include from the command line. */
863 do_includes (pfile, p, scan)
865 struct pending_option *p;
870 struct pending_option *q;
872 /* Don't handle if -fpreprocessed. Later: maybe update this to
873 use the #include "" search path if cpp_read_file fails. */
874 if (CPP_OPTION (pfile, preprocessed))
875 cpp_error (pfile, "-include and -imacros cannot be used with -fpreprocessed");
876 else if (_cpp_read_file (pfile, p->arg) && scan)
877 cpp_scan_buffer_nooutput (pfile, 0);
884 /* This is called after options have been processed. Setup for
885 processing input from the file named FNAME. (Use standard input if
886 FNAME == NULL.) Return 1 on success, 0 on failure. */
889 cpp_start_read (pfile, fname)
893 struct pending_option *p, *q;
895 /* Set up the include search path now. */
896 if (! CPP_OPTION (pfile, no_standard_includes))
897 init_standard_includes (pfile);
899 merge_include_chains (pfile);
901 /* With -v, print the list of dirs to search. */
902 if (CPP_OPTION (pfile, verbose))
904 struct file_name_list *l;
905 fprintf (stderr, _("#include \"...\" search starts here:\n"));
906 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
908 if (l == CPP_OPTION (pfile, bracket_include))
909 fprintf (stderr, _("#include <...> search starts here:\n"));
910 fprintf (stderr, " %s\n", l->name);
912 fprintf (stderr, _("End of search list.\n"));
915 if (CPP_OPTION (pfile, in_fname) == NULL
916 || *CPP_OPTION (pfile, in_fname) == 0)
918 CPP_OPTION (pfile, in_fname) = fname;
919 if (CPP_OPTION (pfile, in_fname) == NULL)
920 CPP_OPTION (pfile, in_fname) = "";
922 if (CPP_OPTION (pfile, out_fname) == NULL)
923 CPP_OPTION (pfile, out_fname) = "";
925 if (CPP_OPTION (pfile, print_deps))
926 /* Set the default target (if there is none already). */
927 deps_add_default_target (pfile->deps, CPP_OPTION (pfile, in_fname));
929 /* Open the main input file. This must be done early, so we have a
930 buffer to stand on. */
931 if (!_cpp_read_file (pfile, fname))
934 /* If already preprocessed, don't install __LINE__, etc., and ignore
935 command line definitions and assertions. Handle -U's, -D's and
936 -A's in the order they were seen. */
937 if (! CPP_OPTION (pfile, preprocessed))
938 init_builtins (pfile);
940 p = CPP_OPTION (pfile, pending)->directive_head;
943 if (! CPP_OPTION (pfile, preprocessed))
944 (*p->handler) (pfile, p->arg);
950 pfile->done_initializing = 1;
952 /* The -imacros files can be scanned now, but the -include files
953 have to be pushed onto the buffer stack and processed later,
954 otherwise cppmain.c won't see the tokens. include_head was built
955 up as a stack, and popping this stack onto the buffer stack means
956 we preserve the order of the command line. */
957 do_includes (pfile, CPP_OPTION (pfile, pending)->imacros_head, 1);
958 do_includes (pfile, CPP_OPTION (pfile, pending)->include_head, 0);
960 free (CPP_OPTION (pfile, pending));
961 CPP_OPTION (pfile, pending) = NULL;
966 /* Use mkdeps.c to output dependency information. */
971 /* Stream on which to print the dependency information. */
972 FILE *deps_stream = 0;
973 const char *deps_mode = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
975 if (CPP_OPTION (pfile, deps_file) == 0)
976 deps_stream = stdout;
979 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
980 if (deps_stream == 0)
982 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
987 deps_write (pfile->deps, deps_stream, 72);
989 if (CPP_OPTION (pfile, deps_phony_targets))
990 deps_phony_targets (pfile->deps, deps_stream);
992 /* Don't close stdout. */
993 if (CPP_OPTION (pfile, deps_file))
995 if (ferror (deps_stream) || fclose (deps_stream) != 0)
996 cpp_fatal (pfile, "I/O error on output");
1000 /* This is called at the end of preprocessing. It pops the
1001 last buffer and writes dependency output. It should also
1002 clear macro definitions, such that you could call cpp_start_read
1003 with a new filename to restart processing. */
1008 if (CPP_BUFFER (pfile))
1010 cpp_ice (pfile, "buffers still stacked in cpp_finish");
1011 while (CPP_BUFFER (pfile))
1012 cpp_pop_buffer (pfile);
1015 /* Don't write the deps file if preprocessing has failed. */
1016 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1017 output_deps (pfile);
1019 /* Report on headers that could use multiple include guards. */
1020 if (CPP_OPTION (pfile, print_include_names))
1021 _cpp_report_missing_guards (pfile);
1025 new_pending_directive (pend, text, handler)
1026 struct cpp_pending *pend;
1028 cl_directive_handler handler;
1030 struct pending_option *o = (struct pending_option *)
1031 xmalloc (sizeof (struct pending_option));
1035 o->handler = handler;
1036 APPEND (pend, directive, o);
1039 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1040 I.e. a const string initializer with parens around it. That is
1041 what N_("string") resolves to, so we make no_* be macros instead. */
1042 #define no_arg N_("Argument missing after %s")
1043 #define no_ass N_("Assertion missing after %s")
1044 #define no_dir N_("Directory name missing after %s")
1045 #define no_fil N_("File name missing after %s")
1046 #define no_mac N_("Macro name missing after %s")
1047 #define no_pth N_("Path name missing after %s")
1048 #define no_num N_("Number missing after %s")
1049 #define no_tgt N_("Target missing after %s")
1051 /* This is the list of all command line options, with the leading
1052 "-" removed. It must be sorted in ASCII collating order. */
1053 #define COMMAND_LINE_OPTIONS \
1054 DEF_OPT("", 0, OPT_stdin_stdout) \
1055 DEF_OPT("$", 0, OPT_dollar) \
1056 DEF_OPT("+", 0, OPT_plus) \
1057 DEF_OPT("-help", 0, OPT__help) \
1058 DEF_OPT("-target-help", 0, OPT_target__help) \
1059 DEF_OPT("-version", 0, OPT__version) \
1060 DEF_OPT("A", no_ass, OPT_A) \
1061 DEF_OPT("C", 0, OPT_C) \
1062 DEF_OPT("D", no_mac, OPT_D) \
1063 DEF_OPT("H", 0, OPT_H) \
1064 DEF_OPT("I", no_dir, OPT_I) \
1065 DEF_OPT("M", 0, OPT_M) \
1066 DEF_OPT("MD", no_fil, OPT_MD) \
1067 DEF_OPT("MF", no_fil, OPT_MF) \
1068 DEF_OPT("MG", 0, OPT_MG) \
1069 DEF_OPT("MM", 0, OPT_MM) \
1070 DEF_OPT("MMD", no_fil, OPT_MMD) \
1071 DEF_OPT("MP", 0, OPT_MP) \
1072 DEF_OPT("MQ", no_tgt, OPT_MQ) \
1073 DEF_OPT("MT", no_tgt, OPT_MT) \
1074 DEF_OPT("P", 0, OPT_P) \
1075 DEF_OPT("U", no_mac, OPT_U) \
1076 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1077 DEF_OPT("d", no_arg, OPT_d) \
1078 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1079 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1080 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1081 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1082 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1083 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1084 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1085 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1086 DEF_OPT("h", 0, OPT_h) \
1087 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1088 DEF_OPT("imacros", no_fil, OPT_imacros) \
1089 DEF_OPT("include", no_fil, OPT_include) \
1090 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1091 DEF_OPT("isystem", no_dir, OPT_isystem) \
1092 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1093 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1094 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1095 DEF_OPT("lang-c", 0, OPT_lang_c) \
1096 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1097 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1098 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1099 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1100 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1101 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1102 DEF_OPT("o", no_fil, OPT_o) \
1103 DEF_OPT("pedantic", 0, OPT_pedantic) \
1104 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1105 DEF_OPT("remap", 0, OPT_remap) \
1106 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1107 DEF_OPT("std=c89", 0, OPT_std_c89) \
1108 DEF_OPT("std=c99", 0, OPT_std_c99) \
1109 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1110 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1111 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1112 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1113 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1114 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1115 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1116 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1117 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1118 DEF_OPT("v", 0, OPT_v) \
1119 DEF_OPT("version", 0, OPT_version) \
1120 DEF_OPT("w", 0, OPT_w)
1122 #define DEF_OPT(text, msg, code) code,
1125 COMMAND_LINE_OPTIONS
1132 const char *opt_text;
1135 enum opt_code opt_code;
1138 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1140 static struct cl_option cl_options[] =
1142 static const struct cl_option cl_options[] =
1145 COMMAND_LINE_OPTIONS
1148 #undef COMMAND_LINE_OPTIONS
1150 /* Perform a binary search to find which, if any, option the given
1151 command-line matches. Returns its index in the option array,
1152 negative on failure. Complications arise since some options can be
1153 suffixed with an argument, and multiple complete matches can occur,
1154 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to
1155 accept options beginning with -W that we do not recognise, but not
1156 to swallow any subsequent command line argument; this is handled as
1157 special cases in cpp_handle_option. */
1159 parse_option (input)
1162 unsigned int md, mn, mx;
1173 opt_len = cl_options[md].opt_len;
1174 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1182 if (input[opt_len] == '\0')
1184 /* We were passed more text. If the option takes an argument,
1185 we may match a later option or we may have been passed the
1186 argument. The longest possible option match succeeds.
1187 If the option takes no arguments we have not matched and
1188 continue the search (e.g. input="stdc++" match was "stdc"). */
1190 if (cl_options[md].msg)
1192 /* Scan forwards. If we get an exact match, return it.
1193 Otherwise, return the longest option-accepting match.
1194 This loops no more than twice with current options. */
1196 for (; mn < N_OPTS; mn++)
1198 opt_len = cl_options[mn].opt_len;
1199 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1201 if (input[opt_len] == '\0')
1203 if (cl_options[mn].msg)
1214 /* Handle one command-line option in (argc, argv).
1215 Can be called multiple times, to handle multiple sets of options.
1216 Returns number of strings consumed. */
1219 cpp_handle_option (pfile, argc, argv)
1225 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1227 if (argv[i][0] != '-')
1229 if (CPP_OPTION (pfile, out_fname) != NULL)
1230 cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
1232 else if (CPP_OPTION (pfile, in_fname) != NULL)
1233 CPP_OPTION (pfile, out_fname) = argv[i];
1235 CPP_OPTION (pfile, in_fname) = argv[i];
1239 enum opt_code opt_code;
1241 const char *arg = 0;
1243 /* Skip over '-'. */
1244 opt_index = parse_option (&argv[i][1]);
1248 opt_code = cl_options[opt_index].opt_code;
1249 if (cl_options[opt_index].msg)
1251 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1253 /* Yuk. Special case for -W as it must not swallow
1254 up any following argument. If this becomes common, add
1255 another field to the cl_options table. */
1256 if (arg[0] == '\0' && opt_code != OPT_W)
1261 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1269 case N_OPTS: /* Shut GCC up. */
1271 case OPT_fleading_underscore:
1272 CPP_OPTION (pfile, user_label_prefix) = "_";
1274 case OPT_fno_leading_underscore:
1275 CPP_OPTION (pfile, user_label_prefix) = "";
1277 case OPT_fno_operator_names:
1278 CPP_OPTION (pfile, operator_names) = 0;
1280 case OPT_fpreprocessed:
1281 CPP_OPTION (pfile, preprocessed) = 1;
1283 case OPT_fno_preprocessed:
1284 CPP_OPTION (pfile, preprocessed) = 0;
1286 case OPT_fshow_column:
1287 CPP_OPTION (pfile, show_column) = 1;
1289 case OPT_fno_show_column:
1290 CPP_OPTION (pfile, show_column) = 0;
1293 /* Silently ignore empty string, non-longs and silly values. */
1297 long tabstop = strtol (arg, &endptr, 10);
1298 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1299 CPP_OPTION (pfile, tabstop) = tabstop;
1303 CPP_OPTION (pfile, inhibit_warnings) = 1;
1308 CPP_OPTION (pfile, help_only) = 1;
1310 case OPT_target__help:
1311 /* Print if any target specific options. cpplib has none, but
1312 make sure help_only gets set. */
1313 CPP_OPTION (pfile, help_only) = 1;
1316 /* --version inhibits compilation, -version doesn't. -v means
1317 verbose and -version. Historical reasons, don't ask. */
1319 CPP_OPTION (pfile, help_only) = 1;
1322 CPP_OPTION (pfile, verbose) = 1;
1327 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1328 #ifdef TARGET_VERSION
1331 fputc ('\n', stderr);
1335 CPP_OPTION (pfile, discard_comments) = 0;
1338 CPP_OPTION (pfile, no_line_commands) = 1;
1340 case OPT_dollar: /* Don't include $ in identifiers. */
1341 CPP_OPTION (pfile, dollars_in_ident) = 0;
1344 CPP_OPTION (pfile, print_include_names) = 1;
1347 new_pending_directive (pend, arg, cpp_define);
1349 case OPT_pedantic_errors:
1350 CPP_OPTION (pfile, pedantic_errors) = 1;
1353 CPP_OPTION (pfile, pedantic) = 1;
1356 CPP_OPTION (pfile, trigraphs) = 1;
1359 CPP_OPTION (pfile, cplusplus) = 1;
1360 CPP_OPTION (pfile, cplusplus_comments) = 1;
1363 CPP_OPTION (pfile, remap) = 1;
1366 CPP_OPTION (pfile, include_prefix) = arg;
1367 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1370 set_lang (pfile, CLK_GNUC89);
1372 case OPT_lang_cplusplus:
1373 set_lang (pfile, CLK_GNUCXX);
1376 set_lang (pfile, CLK_OBJC);
1378 case OPT_lang_objcplusplus:
1379 set_lang (pfile, CLK_OBJCXX);
1382 set_lang (pfile, CLK_ASM);
1384 case OPT_std_cplusplus98:
1385 set_lang (pfile, CLK_CXX98);
1388 set_lang (pfile, CLK_GNUC89);
1392 set_lang (pfile, CLK_GNUC99);
1394 case OPT_std_iso9899_199409:
1395 set_lang (pfile, CLK_STDC94);
1397 case OPT_std_iso9899_1990:
1400 set_lang (pfile, CLK_STDC89);
1402 case OPT_std_iso9899_199x:
1403 case OPT_std_iso9899_1999:
1406 set_lang (pfile, CLK_STDC99);
1409 /* -nostdinc causes no default include directories.
1410 You must specify all include-file directories with -I. */
1411 CPP_OPTION (pfile, no_standard_includes) = 1;
1413 case OPT_nostdincplusplus:
1414 /* -nostdinc++ causes no default C++-specific include directories. */
1415 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1418 if (CPP_OPTION (pfile, out_fname) != NULL)
1420 cpp_fatal (pfile, "Output filename specified twice");
1423 CPP_OPTION (pfile, out_fname) = arg;
1424 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1425 CPP_OPTION (pfile, out_fname) = "";
1427 case OPT_stdin_stdout:
1428 /* JF handle '-' as file name meaning stdin or stdout. */
1429 if (CPP_OPTION (pfile, in_fname) == NULL)
1430 CPP_OPTION (pfile, in_fname) = "";
1431 else if (CPP_OPTION (pfile, out_fname) == NULL)
1432 CPP_OPTION (pfile, out_fname) = "";
1435 /* Args to -d specify what parts of macros to dump.
1436 Silently ignore unrecognised options; they may
1437 be aimed at the compiler proper. */
1441 while ((c = *arg++) != '\0')
1445 CPP_OPTION (pfile, dump_macros) = dump_only;
1446 CPP_OPTION (pfile, no_output) = 1;
1449 CPP_OPTION (pfile, dump_macros) = dump_names;
1452 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1455 CPP_OPTION (pfile, dump_includes) = 1;
1462 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1465 CPP_OPTION (pfile, print_deps) = 2;
1468 CPP_OPTION (pfile, print_deps) = 1;
1471 CPP_OPTION (pfile, deps_file) = arg;
1474 CPP_OPTION (pfile, deps_phony_targets) = 1;
1478 /* Add a target. -MQ quotes for Make. */
1479 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1482 /* -MD and -MMD for cpp0 are deprecated and undocumented
1483 (use -M or -MM with -MF instead), and probably should be
1484 removed with the next major GCC version. For the moment
1485 we allow these for the benefit of Automake 1.4, which
1486 uses these when dependency tracking is enabled. Automake
1487 1.5 will fix this. */
1489 CPP_OPTION (pfile, print_deps) = 2;
1490 CPP_OPTION (pfile, deps_file) = arg;
1493 CPP_OPTION (pfile, print_deps) = 1;
1494 CPP_OPTION (pfile, deps_file) = arg;
1500 /* -A with an argument beginning with '-' acts as
1501 #unassert on whatever immediately follows the '-'.
1502 If "-" is the whole argument, we eliminate all
1503 predefined macros and assertions, including those
1504 that were specified earlier on the command line.
1505 That way we can get rid of any that were passed
1506 automatically in from GCC. */
1510 struct pending_option *o1, *o2;
1512 o1 = pend->directive_head;
1519 pend->directive_head = NULL;
1520 pend->directive_tail = NULL;
1523 new_pending_directive (pend, arg + 1, cpp_unassert);
1526 new_pending_directive (pend, arg, cpp_assert);
1529 new_pending_directive (pend, arg, cpp_undef);
1531 case OPT_I: /* Add directory to path for includes. */
1532 if (!strcmp (arg, "-"))
1535 Use the preceding -I directories for #include "..."
1536 but not #include <...>.
1537 Don't search the directory of the present file
1538 for #include "...". (Note that -I. -I- is not the same as
1539 the default setup; -I. uses the compiler's working dir.) */
1540 if (! CPP_OPTION (pfile, ignore_srcdir))
1542 pend->quote_head = pend->brack_head;
1543 pend->quote_tail = pend->brack_tail;
1544 pend->brack_head = 0;
1545 pend->brack_tail = 0;
1546 CPP_OPTION (pfile, ignore_srcdir) = 1;
1550 cpp_fatal (pfile, "-I- specified twice");
1555 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1558 /* Add directory to beginning of system include path, as a system
1559 include directory. */
1560 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1564 struct pending_option *o = (struct pending_option *)
1565 xmalloc (sizeof (struct pending_option));
1568 /* This list has to be built in reverse order so that
1569 when cpp_start_read pushes all the -include files onto
1570 the buffer stack, they will be scanned in forward order. */
1571 o->next = pend->include_head;
1572 pend->include_head = o;
1577 struct pending_option *o = (struct pending_option *)
1578 xmalloc (sizeof (struct pending_option));
1582 APPEND (pend, imacros, o);
1585 case OPT_iwithprefix:
1586 /* Add directory to end of path for includes,
1587 with the default prefix at the front of its name. */
1589 case OPT_iwithprefixbefore:
1590 /* Add directory to main path for includes,
1591 with the default prefix at the front of its name. */
1598 if (CPP_OPTION (pfile, include_prefix) != 0)
1600 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1601 fname = xmalloc (ipl + len + 1);
1602 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1603 memcpy (fname + ipl, arg, len + 1);
1605 else if (cpp_GCC_INCLUDE_DIR_len)
1607 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1608 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1609 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1612 fname = xstrdup (arg);
1614 append_include_chain (pfile, fname,
1615 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1619 /* Add directory to end of path for includes. */
1620 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1623 /* Silently ignore unrecognised options. */
1624 if (!strcmp (argv[i], "-Wall"))
1626 CPP_OPTION (pfile, warn_trigraphs) = 1;
1627 CPP_OPTION (pfile, warn_comments) = 1;
1629 else if (!strcmp (argv[i], "-Wtraditional"))
1630 CPP_OPTION (pfile, warn_traditional) = 1;
1631 else if (!strcmp (argv[i], "-Wtrigraphs"))
1632 CPP_OPTION (pfile, warn_trigraphs) = 1;
1633 else if (!strcmp (argv[i], "-Wcomment"))
1634 CPP_OPTION (pfile, warn_comments) = 1;
1635 else if (!strcmp (argv[i], "-Wcomments"))
1636 CPP_OPTION (pfile, warn_comments) = 1;
1637 else if (!strcmp (argv[i], "-Wundef"))
1638 CPP_OPTION (pfile, warn_undef) = 1;
1639 else if (!strcmp (argv[i], "-Wimport"))
1640 CPP_OPTION (pfile, warn_import) = 1;
1641 else if (!strcmp (argv[i], "-Werror"))
1642 CPP_OPTION (pfile, warnings_are_errors) = 1;
1643 else if (!strcmp (argv[i], "-Wsystem-headers"))
1644 CPP_OPTION (pfile, warn_system_headers) = 1;
1645 else if (!strcmp (argv[i], "-Wno-traditional"))
1646 CPP_OPTION (pfile, warn_traditional) = 0;
1647 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1648 CPP_OPTION (pfile, warn_trigraphs) = 0;
1649 else if (!strcmp (argv[i], "-Wno-comment"))
1650 CPP_OPTION (pfile, warn_comments) = 0;
1651 else if (!strcmp (argv[i], "-Wno-comments"))
1652 CPP_OPTION (pfile, warn_comments) = 0;
1653 else if (!strcmp (argv[i], "-Wno-undef"))
1654 CPP_OPTION (pfile, warn_undef) = 0;
1655 else if (!strcmp (argv[i], "-Wno-import"))
1656 CPP_OPTION (pfile, warn_import) = 0;
1657 else if (!strcmp (argv[i], "-Wno-error"))
1658 CPP_OPTION (pfile, warnings_are_errors) = 0;
1659 else if (!strcmp (argv[i], "-Wno-system-headers"))
1660 CPP_OPTION (pfile, warn_system_headers) = 0;
1667 /* Handle command-line options in (argc, argv).
1668 Can be called multiple times, to handle multiple sets of options.
1669 Returns if an unrecognized option is seen.
1670 Returns number of strings consumed. */
1672 cpp_handle_options (pfile, argc, argv)
1678 int strings_processed;
1680 for (i = 0; i < argc; i += strings_processed)
1682 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1683 if (strings_processed == 0)
1690 /* Extra processing when all options are parsed, after all calls to
1691 cpp_handle_option[s]. Consistency checks etc. */
1693 cpp_post_options (pfile)
1696 /* -Wtraditional is not useful in C++ mode. */
1697 if (CPP_OPTION (pfile, cplusplus))
1698 CPP_OPTION (pfile, warn_traditional) = 0;
1700 /* Set this if it hasn't been set already. */
1701 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1702 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1704 /* We need to do this after option processing and before
1705 cpp_start_read, as cppmain.c relies on the options->no_output to
1706 set its callbacks correctly before calling cpp_start_read. */
1707 init_dependency_output (pfile);
1709 /* After checking the environment variables, check if -M or -MM has
1710 not been specified, but other -M options have. */
1711 if (CPP_OPTION (pfile, print_deps) == 0 &&
1712 (CPP_OPTION (pfile, print_deps_missing_files)
1713 || CPP_OPTION (pfile, deps_file)
1714 || CPP_OPTION (pfile, deps_phony_targets)))
1715 cpp_fatal (pfile, "you must additionally specify either -M or -MM");
1718 /* Set up dependency-file output. */
1720 init_dependency_output (pfile)
1723 char *spec, *s, *output_file;
1725 /* Either of two environment variables can specify output of deps.
1726 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1727 where OUTPUT_FILE is the file to write deps info to
1728 and DEPS_TARGET is the target to mention in the deps. */
1730 if (CPP_OPTION (pfile, print_deps) == 0)
1732 spec = getenv ("DEPENDENCIES_OUTPUT");
1734 CPP_OPTION (pfile, print_deps) = 1;
1737 spec = getenv ("SUNPRO_DEPENDENCIES");
1739 CPP_OPTION (pfile, print_deps) = 2;
1744 /* Find the space before the DEPS_TARGET, if there is one. */
1745 s = strchr (spec, ' ');
1748 /* Let the caller perform MAKE quoting. */
1749 deps_add_target (pfile->deps, s + 1, 0);
1750 output_file = (char *) xmalloc (s - spec + 1);
1751 memcpy (output_file, spec, s - spec);
1752 output_file[s - spec] = 0;
1757 /* Command line overrides environment variables. */
1758 if (CPP_OPTION (pfile, deps_file) == 0)
1759 CPP_OPTION (pfile, deps_file) = output_file;
1760 CPP_OPTION (pfile, print_deps_append) = 1;
1763 /* If dependencies go to standard output, or -MG is used, we should
1764 suppress output. The user may be requesting other stuff to
1765 stdout, with -dM, -v etc. We let them shoot themselves in the
1767 if (CPP_OPTION (pfile, deps_file) == 0
1768 || CPP_OPTION (pfile, print_deps_missing_files))
1769 CPP_OPTION (pfile, no_output) = 1;
1775 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1776 /* To keep the lines from getting too long for some compilers, limit
1777 to about 500 characters (6 lines) per chunk. */
1780 -include <file> Include the contents of <file> before other files\n\
1781 -imacros <file> Accept definition of macros in <file>\n\
1782 -iprefix <path> Specify <path> as a prefix for next two options\n\
1783 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1784 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1785 -isystem <dir> Add <dir> to the start of the system include path\n\
1788 -idirafter <dir> Add <dir> to the end of the system include path\n\
1789 -I <dir> Add <dir> to the end of the main include path\n\
1790 -I- Fine-grained include path control; see info docs\n\
1791 -nostdinc Do not search system include directories\n\
1792 (dirs specified with -isystem will still be used)\n\
1793 -nostdinc++ Do not search system include directories for C++\n\
1794 -o <file> Put output into <file>\n\
1797 -pedantic Issue all warnings demanded by strict ISO C\n\
1798 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1799 -trigraphs Support ISO C trigraphs\n\
1800 -lang-c Assume that the input sources are in C\n\
1801 -lang-c89 Assume that the input sources are in C89\n\
1804 -lang-c++ Assume that the input sources are in C++\n\
1805 -lang-objc Assume that the input sources are in ObjectiveC\n\
1806 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1807 -lang-asm Assume that the input sources are in assembler\n\
1810 -std=<std name> Specify the conformance standard; one of:\n\
1811 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1812 iso9899:199409, iso9899:1999\n\
1813 -+ Allow parsing of C++ style features\n\
1814 -w Inhibit warning messages\n\
1815 -Wtrigraphs Warn if trigraphs are encountered\n\
1816 -Wno-trigraphs Do not warn about trigraphs\n\
1817 -Wcomment{s} Warn if one comment starts inside another\n\
1820 -Wno-comment{s} Do not warn about comments\n\
1821 -Wtraditional Warn about features not present in traditional C\n\
1822 -Wno-traditional Do not warn about traditional C\n\
1823 -Wundef Warn if an undefined macro is used by #if\n\
1824 -Wno-undef Do not warn about testing undefined macros\n\
1825 -Wimport Warn about the use of the #import directive\n\
1828 -Wno-import Do not warn about the use of #import\n\
1829 -Werror Treat all warnings as errors\n\
1830 -Wno-error Do not treat warnings as errors\n\
1831 -Wsystem-headers Do not suppress warnings from system headers\n\
1832 -Wno-system-headers Suppress warnings from system headers\n\
1833 -Wall Enable all preprocessor warnings\n\
1836 -M Generate make dependencies\n\
1837 -MM As -M, but ignore system header files\n\
1838 -MF <file> Write dependency output to the given file\n\
1839 -MG Treat missing header file as generated files\n\
1842 -MP Generate phony targets for all headers\n\
1843 -MQ <target> Add a MAKE-quoted target\n\
1844 -MT <target> Add an unquoted target\n\
1847 -D<macro> Define a <macro> with string '1' as its value\n\
1848 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1849 -A<question> (<answer>) Assert the <answer> to <question>\n\
1850 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1851 -U<macro> Undefine <macro> \n\
1852 -v Display the version number\n\
1855 -H Print the name of header files as they are used\n\
1856 -C Do not discard comments\n\
1857 -dM Display a list of macro definitions active at end\n\
1858 -dD Preserve macro definitions in output\n\
1859 -dN As -dD except that only the names are preserved\n\
1860 -dI Include #include directives in the output\n\
1863 -ftabstop=<number> Distance between tab stops for column reporting\n\
1864 -P Do not generate #line directives\n\
1865 -$ Do not allow '$' in identifiers\n\
1866 -remap Remap file names when including files.\n\
1867 --version Display version information\n\
1868 -h or --help Display this information\n\