2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000 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 initialize PARAMS ((void));
98 static void initialize_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 initialize_dependency_output PARAMS ((cpp_reader *));
111 static void initialize_standard_includes PARAMS ((cpp_reader *));
112 static void new_pending_directive PARAMS ((struct cpp_pending *,
114 cl_directive_handler));
116 static int opt_comp PARAMS ((const void *, const void *));
118 static int parse_option PARAMS ((const char *));
120 /* Fourth argument to append_include_chain: chain to use. */
121 enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };
123 /* If we have designated initializers (GCC >2.7) these tables can be
124 initialized, constant data. Otherwise, they have to be filled in at
126 #if HAVE_DESIGNATED_INITIALIZERS
128 #define init_trigraph_map() /* Nothing. */
129 #define TRIGRAPH_MAP \
130 __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = {
133 #define s(p, v) [p] = v,
137 #define TRIGRAPH_MAP U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
138 static void init_trigraph_map PARAMS ((void)) { \
139 unsigned char *x = _cpp_trigraph_map;
142 #define s(p, v) x[p] = v;
147 s('=', '#') s(')', ']') s('!', '|')
148 s('(', '[') s('\'', '^') s('>', '}')
149 s('/', '\\') s('<', '{') s('-', '~')
156 /* Given a colon-separated list of file names PATH,
157 add all the names to the search path for include files. */
160 path_include (pfile, list, path)
171 /* Find the end of this name. */
173 while (*q != 0 && *q != PATH_SEPARATOR) q++;
176 /* An empty name in the path stands for the current directory. */
177 name = (char *) xmalloc (2);
183 /* Otherwise use the directory that is named. */
184 name = (char *) xmalloc (q - p + 1);
185 memcpy (name, p, q - p);
189 append_include_chain (pfile, name, path, 0);
191 /* Advance past this name. */
199 /* Append DIR to include path PATH. DIR must be permanently allocated
202 append_include_chain (pfile, dir, path, cxx_aware)
208 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
209 struct file_name_list *new;
213 _cpp_simplify_pathname (dir);
216 /* Dirs that don't exist are silently ignored. */
218 cpp_notice_from_errno (pfile, dir);
219 else if (CPP_OPTION (pfile, verbose))
220 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
224 if (!S_ISDIR (st.st_mode))
226 cpp_notice (pfile, "%s: Not a directory", dir);
231 if (len > pfile->max_include_len)
232 pfile->max_include_len = len;
234 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
237 new->ino = st.st_ino;
238 new->dev = st.st_dev;
240 new->sysp = cxx_aware ? 1 : 2;
243 new->name_map = NULL;
249 case QUOTE: APPEND (pend, quote, new); break;
250 case BRACKET: APPEND (pend, brack, new); break;
251 case SYSTEM: APPEND (pend, systm, new); break;
252 case AFTER: APPEND (pend, after, new); break;
256 /* Handle a duplicated include path. PREV is the link in the chain
257 before the duplicate. The duplicate is removed from the chain and
258 freed. Returns PREV. */
259 struct file_name_list *
260 remove_dup_dir (pfile, prev)
262 struct file_name_list *prev;
264 struct file_name_list *cur = prev->next;
266 if (CPP_OPTION (pfile, verbose))
267 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
269 prev->next = cur->next;
276 /* Remove duplicate directories from a chain. Returns the tail of the
277 chain, or NULL if the chain is empty. This algorithm is quadratic
278 in the number of -I switches, which is acceptable since there
279 aren't usually that many of them. */
280 struct file_name_list *
281 remove_dup_dirs (pfile, head)
283 struct file_name_list *head;
285 struct file_name_list *prev = NULL, *cur, *other;
287 for (cur = head; cur; cur = cur->next)
289 for (other = head; other != cur; other = other->next)
290 if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
292 cur = remove_dup_dir (pfile, prev);
301 /* Merge the four include chains together in the order quote, bracket,
302 system, after. Remove duplicate dirs (as determined by
303 INO_T_EQ()). The system_include and after_include chains are never
304 referred to again after this function; all access is through the
305 bracket_include path.
307 For the future: Check if the directory is empty (but
308 how?) and possibly preload the include hash. */
311 merge_include_chains (pfile)
314 struct file_name_list *quote, *brack, *systm, *qtail;
316 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
318 quote = pend->quote_head;
319 brack = pend->brack_head;
320 systm = pend->systm_head;
321 qtail = pend->quote_tail;
323 /* Paste together bracket, system, and after include chains. */
325 pend->systm_tail->next = pend->after_head;
327 systm = pend->after_head;
330 pend->brack_tail->next = systm;
334 /* This is a bit tricky. First we drop dupes from the quote-include
335 list. Then we drop dupes from the bracket-include list.
336 Finally, if qtail and brack are the same directory, we cut out
339 We can't just merge the lists and then uniquify them because
340 then we may lose directories from the <> search path that should
341 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
342 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
343 -Ibar -I- -Ifoo -Iquux. */
345 remove_dup_dirs (pfile, brack);
346 qtail = remove_dup_dirs (pfile, quote);
352 /* If brack == qtail, remove brack as it's simpler. */
353 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
354 brack = remove_dup_dir (pfile, qtail);
359 CPP_OPTION (pfile, quote_include) = quote;
360 CPP_OPTION (pfile, bracket_include) = brack;
363 /* Sets internal flags correctly for a given language, and defines
364 macros if necessary. */
366 set_lang (pfile, lang)
370 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
373 CPP_OPTION (pfile, lang) = lang;
374 CPP_OPTION (pfile, objc) = 0;
375 CPP_OPTION (pfile, cplusplus) = 0;
376 CPP_OPTION (pfile, extended_numbers) = 1; /* Allowed in GNU C and C99. */
382 CPP_OPTION (pfile, trigraphs) = 0;
383 CPP_OPTION (pfile, dollars_in_ident) = 1;
384 CPP_OPTION (pfile, cplusplus_comments) = 1;
385 CPP_OPTION (pfile, digraphs) = 1;
386 CPP_OPTION (pfile, c99) = 1;
387 new_pending_directive (pend, "__STDC_VERSION__=199901L", cpp_define);
390 CPP_OPTION (pfile, trigraphs) = 0;
391 CPP_OPTION (pfile, dollars_in_ident) = 1;
392 CPP_OPTION (pfile, cplusplus_comments) = 1;
393 CPP_OPTION (pfile, digraphs) = 1;
394 CPP_OPTION (pfile, c99) = 0;
399 new_pending_directive (pend, "__STDC_VERSION__=199409L", cpp_define);
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;
407 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
410 CPP_OPTION (pfile, trigraphs) = 1;
411 CPP_OPTION (pfile, dollars_in_ident) = 0;
412 CPP_OPTION (pfile, cplusplus_comments) = 1;
413 CPP_OPTION (pfile, digraphs) = 1;
414 CPP_OPTION (pfile, c99) = 1;
415 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
416 new_pending_directive (pend, "__STDC_VERSION__=199901L", cpp_define);
421 new_pending_directive (pend, "__cplusplus", cpp_define);
422 CPP_OPTION (pfile, cplusplus) = 1;
424 CPP_OPTION (pfile, trigraphs) = 0;
425 CPP_OPTION (pfile, dollars_in_ident) = 1;
426 CPP_OPTION (pfile, cplusplus_comments) = 1;
427 CPP_OPTION (pfile, digraphs) = 1;
428 CPP_OPTION (pfile, c99) = 0;
429 CPP_OPTION (pfile, objc) = 1;
430 new_pending_directive (pend, "__OBJC__", cpp_define);
436 CPP_OPTION (pfile, cplusplus) = 1;
437 CPP_OPTION (pfile, trigraphs) = lang == CLK_CXX98;
438 CPP_OPTION (pfile, dollars_in_ident) = lang == CLK_GNUCXX;
439 CPP_OPTION (pfile, cplusplus_comments) = 1;
440 CPP_OPTION (pfile, digraphs) = 1;
441 CPP_OPTION (pfile, c99) = 0;
442 new_pending_directive (pend, "__cplusplus", cpp_define);
447 CPP_OPTION (pfile, trigraphs) = 0;
448 CPP_OPTION (pfile, dollars_in_ident) = 0; /* Maybe not? */
449 CPP_OPTION (pfile, cplusplus_comments) = 1;
450 CPP_OPTION (pfile, digraphs) = 0;
451 CPP_OPTION (pfile, c99) = 0;
452 new_pending_directive (pend, "__ASSEMBLER__", cpp_define);
457 /* initialize initializes library global state. It might not need to
458 do anything depending on the platform and compiler. */
460 static int initialized = 0;
466 /* For non-ASCII hosts, the cl_options array needs to be sorted at
468 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
471 /* Set up the trigraph map. This doesn't need to do anything if we were
472 compiled with a compiler that supports C99 designated initializers. */
473 init_trigraph_map ();
478 /* Initialize a cpp_reader structure. */
480 cpp_create_reader (lang)
483 struct spec_nodes *s;
484 cpp_reader *pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
486 /* Initialise this instance of the library if it hasn't been already. */
490 CPP_OPTION (pfile, warn_import) = 1;
491 CPP_OPTION (pfile, discard_comments) = 1;
492 CPP_OPTION (pfile, show_column) = 1;
493 CPP_OPTION (pfile, tabstop) = 8;
495 CPP_OPTION (pfile, pending) =
496 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
498 /* After creating pfile->pending. */
499 set_lang (pfile, lang);
501 /* Initialize lexer state. */
502 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
504 /* Indicate date and time not yet calculated. */
505 pfile->date.type = CPP_EOF;
507 /* Initialise the base context. */
508 pfile->context = &pfile->base_context;
509 pfile->base_context.macro = 0;
510 pfile->base_context.prev = pfile->base_context.next = 0;
512 /* Identifier pool initially 8K. Unaligned, permanent pool. */
513 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
515 /* String and number pool initially 4K. Unaligned, temporary pool. */
516 _cpp_init_pool (&pfile->temp_string_pool, 4 * 1024, 1, 1);
518 /* Argument pool initially 8K. Aligned, temporary pool. */
519 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
521 /* Macro pool initially 8K. Aligned, permanent pool. */
522 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
524 /* Start with temporary pool. */
525 pfile->string_pool = &pfile->temp_string_pool;
527 _cpp_init_hashtable (pfile);
528 _cpp_init_stacks (pfile);
529 _cpp_init_includes (pfile);
530 _cpp_init_internal_pragmas (pfile);
532 /* Initialize the special nodes. */
533 s = &pfile->spec_nodes;
534 s->n_L = cpp_lookup (pfile, DSC("L"));
535 s->n_defined = cpp_lookup (pfile, DSC("defined"));
536 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
537 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
538 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
539 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
540 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
545 /* Free resources used by PFILE.
546 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
551 struct file_name_list *dir, *dirn;
552 cpp_context *context, *contextn;
554 while (CPP_BUFFER (pfile) != NULL)
555 cpp_pop_buffer (pfile);
557 if (pfile->macro_buffer)
558 free ((PTR) pfile->macro_buffer);
561 deps_free (pfile->deps);
563 _cpp_cleanup_includes (pfile);
564 _cpp_cleanup_stacks (pfile);
565 _cpp_cleanup_hashtable (pfile);
567 _cpp_free_lookaheads (pfile);
569 _cpp_free_pool (&pfile->ident_pool);
570 _cpp_free_pool (&pfile->temp_string_pool);
571 _cpp_free_pool (&pfile->macro_pool);
572 _cpp_free_pool (&pfile->argument_pool);
574 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
581 for (context = pfile->base_context.next; context; context = contextn)
583 contextn = context->next;
589 /* This structure defines one built-in identifier. A node will be
590 entered in the hash table under the name NAME, with value VALUE (if
591 any). If flags has OPERATOR, the node's operator field is used; if
592 flags has BUILTIN the node's builtin field is used.
594 Two values are not compile time constants, so we tag
595 them in the FLAGS field instead:
596 VERS value is the global version_string, quoted
597 ULP value is the global user_label_prefix
599 Also, macros with CPLUS set in the flags field are entered only for C++. */
605 unsigned char builtin;
606 unsigned char operator;
607 unsigned short flags;
614 #define OPERATOR 0x10
616 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
617 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
618 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
619 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
620 static const struct builtin builtin_array[] =
622 B("__TIME__", BT_TIME),
623 B("__DATE__", BT_DATE),
624 B("__FILE__", BT_FILE),
625 B("__BASE_FILE__", BT_BASE_FILE),
626 B("__LINE__", BT_SPECLINE),
627 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
628 B("__STDC__", BT_STDC),
630 X("__VERSION__", VERS),
631 X("__USER_LABEL_PREFIX__", ULP),
632 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
633 C("__HAVE_BUILTIN_SETJMP__", "1"),
634 #ifndef NO_BUILTIN_SIZE_TYPE
635 C("__SIZE_TYPE__", SIZE_TYPE),
637 #ifndef NO_BUILTIN_PTRDIFF_TYPE
638 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
640 #ifndef NO_BUILTIN_WCHAR_TYPE
641 C("__WCHAR_TYPE__", WCHAR_TYPE),
643 #ifndef NO_BUILTIN_WINT_TYPE
644 C("__WINT_TYPE__", WINT_TYPE),
647 /* Named operators known to the preprocessor. These cannot be #defined
648 and always have their stated meaning. They are treated like normal
649 identifiers except for the type code and the meaning. Most of them
650 are only for C++ (but see iso646.h). */
651 O("and", CPP_AND_AND, CPLUS),
652 O("and_eq", CPP_AND_EQ, CPLUS),
653 O("bitand", CPP_AND, CPLUS),
654 O("bitor", CPP_OR, CPLUS),
655 O("compl", CPP_COMPL, CPLUS),
656 O("not", CPP_NOT, CPLUS),
657 O("not_eq", CPP_NOT_EQ, CPLUS),
658 O("or", CPP_OR_OR, CPLUS),
659 O("or_eq", CPP_OR_EQ, CPLUS),
660 O("xor", CPP_XOR, CPLUS),
661 O("xor_eq", CPP_XOR_EQ, CPLUS)
666 #define builtin_array_end \
667 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
669 /* Subroutine of cpp_start_read; reads the builtins table above and
670 enters the macros into the hash table. */
672 initialize_builtins (pfile)
675 const struct builtin *b;
677 for(b = builtin_array; b < builtin_array_end; b++)
679 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
682 if (b->flags & (OPERATOR | BUILTIN))
684 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
685 if (b->flags & OPERATOR)
687 hp->flags |= NODE_OPERATOR;
688 hp->value.operator = b->operator;
693 hp->flags |= NODE_BUILTIN;
694 hp->value.builtin = b->builtin;
697 else /* A standard macro of some kind. */
704 /* Allocate enough space for 'name "value"\n\0'. */
705 str = alloca (b->len + strlen (version_string) + 5);
706 sprintf (str, "%s \"%s\"\n", b->name, version_string);
711 val = CPP_OPTION (pfile, user_label_prefix);
715 /* Allocate enough space for "name value\n\0". */
716 str = alloca (b->len + strlen (val) + 3);
717 sprintf(str, "%s %s\n", b->name, val);
720 _cpp_define_builtin (pfile, str);
729 #undef builtin_array_end
731 /* Another subroutine of cpp_start_read. This one sets up to do
732 dependency-file output. */
734 initialize_dependency_output (pfile)
737 char *spec, *s, *output_file;
739 /* Either of two environment variables can specify output of deps.
740 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
741 where OUTPUT_FILE is the file to write deps info to
742 and DEPS_TARGET is the target to mention in the deps. */
744 if (CPP_OPTION (pfile, print_deps) == 0)
746 spec = getenv ("DEPENDENCIES_OUTPUT");
748 CPP_OPTION (pfile, print_deps) = 1;
751 spec = getenv ("SUNPRO_DEPENDENCIES");
753 CPP_OPTION (pfile, print_deps) = 2;
758 /* Find the space before the DEPS_TARGET, if there is one. */
759 s = strchr (spec, ' ');
762 CPP_OPTION (pfile, deps_target) = s + 1;
763 output_file = (char *) xmalloc (s - spec + 1);
764 memcpy (output_file, spec, s - spec);
765 output_file[s - spec] = 0;
769 CPP_OPTION (pfile, deps_target) = 0;
773 CPP_OPTION (pfile, deps_file) = output_file;
774 CPP_OPTION (pfile, print_deps_append) = 1;
777 pfile->deps = deps_init ();
779 /* Print the expected object file name as the target of this Make-rule. */
780 if (CPP_OPTION (pfile, deps_target))
781 deps_add_target (pfile->deps, CPP_OPTION (pfile, deps_target));
782 else if (*CPP_OPTION (pfile, in_fname) == 0)
783 deps_add_target (pfile->deps, "-");
785 deps_calc_target (pfile->deps, CPP_OPTION (pfile, in_fname));
787 if (CPP_OPTION (pfile, in_fname))
788 deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
791 /* And another subroutine. This one sets up the standard include path. */
793 initialize_standard_includes (pfile)
797 const struct default_include *p;
798 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
800 /* Several environment variables may add to the include search path.
801 CPATH specifies an additional list of directories to be searched
802 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
803 etc. specify an additional list of directories to be searched as
804 if specified with -isystem, for the language indicated. */
806 GET_ENV_PATH_LIST (path, "CPATH");
807 if (path != 0 && *path != 0)
808 path_include (pfile, path, BRACKET);
810 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
813 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
816 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
819 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
822 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
825 if (path != 0 && *path != 0)
826 path_include (pfile, path, SYSTEM);
828 /* Search "translated" versions of GNU directories.
829 These have /usr/local/lib/gcc... replaced by specd_prefix. */
830 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
832 /* Remove the `include' from /usr/local/lib/gcc.../include.
833 GCC_INCLUDE_DIR will always end in /include. */
834 int default_len = cpp_GCC_INCLUDE_DIR_len;
835 char *default_prefix = (char *) alloca (default_len + 1);
836 int specd_len = strlen (specd_prefix);
838 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
839 default_prefix[default_len] = '\0';
841 for (p = cpp_include_defaults; p->fname; p++)
843 /* Some standard dirs are only for C++. */
845 || (CPP_OPTION (pfile, cplusplus)
846 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
848 /* Does this dir start with the prefix? */
849 if (!memcmp (p->fname, default_prefix, default_len))
851 /* Yes; change prefix and add to search list. */
852 int flen = strlen (p->fname);
853 int this_len = specd_len + flen - default_len;
854 char *str = (char *) xmalloc (this_len + 1);
855 memcpy (str, specd_prefix, specd_len);
856 memcpy (str + specd_len,
857 p->fname + default_len,
858 flen - default_len + 1);
860 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
866 /* Search ordinary names for GNU include directories. */
867 for (p = cpp_include_defaults; p->fname; p++)
869 /* Some standard dirs are only for C++. */
871 || (CPP_OPTION (pfile, cplusplus)
872 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
874 char *str = xstrdup (update_path (p->fname, p->component));
875 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
880 /* Handles -imacro and -include from the command line. */
882 do_includes (pfile, p, scan)
884 struct pending_option *p;
889 struct pending_option *q;
891 /* Later: maybe update this to use the #include "" search path
892 if cpp_read_file fails. */
893 if (_cpp_read_file (pfile, p->arg) && scan)
894 cpp_scan_buffer_nooutput (pfile, 0);
901 /* This is called after options have been processed. Check options
902 for consistency, and setup for processing input from the file named
903 FNAME. (Use standard input if FNAME == NULL.) Return 1 on success,
907 cpp_start_read (pfile, fname)
911 struct pending_option *p, *q;
913 /* -MG doesn't select the form of output and must be specified with one of
914 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
915 inhibit compilation. */
916 if (CPP_OPTION (pfile, print_deps_missing_files)
917 && (CPP_OPTION (pfile, print_deps) == 0
918 || !CPP_OPTION (pfile, no_output)))
920 cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
924 /* -Wtraditional is not useful in C++ mode. */
925 if (CPP_OPTION (pfile, cplusplus))
926 CPP_OPTION (pfile, warn_traditional) = 0;
928 /* Set this if it hasn't been set already. */
929 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
930 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
932 /* Set up the include search path now. */
933 if (! CPP_OPTION (pfile, no_standard_includes))
934 initialize_standard_includes (pfile);
936 merge_include_chains (pfile);
938 /* With -v, print the list of dirs to search. */
939 if (CPP_OPTION (pfile, verbose))
941 struct file_name_list *l;
942 fprintf (stderr, _("#include \"...\" search starts here:\n"));
943 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
945 if (l == CPP_OPTION (pfile, bracket_include))
946 fprintf (stderr, _("#include <...> search starts here:\n"));
947 fprintf (stderr, " %s\n", l->name);
949 fprintf (stderr, _("End of search list.\n"));
952 /* Open the main input file. This must be done early, so we have a
953 buffer to stand on. */
954 if (CPP_OPTION (pfile, in_fname) == NULL
955 || *CPP_OPTION (pfile, in_fname) == 0)
957 CPP_OPTION (pfile, in_fname) = fname;
958 if (CPP_OPTION (pfile, in_fname) == NULL)
959 CPP_OPTION (pfile, in_fname) = "";
961 if (CPP_OPTION (pfile, out_fname) == NULL)
962 CPP_OPTION (pfile, out_fname) = "";
964 if (!_cpp_read_file (pfile, fname))
967 initialize_dependency_output (pfile);
969 /* Install __LINE__, etc. */
970 initialize_builtins (pfile);
972 /* Do -U's, -D's and -A's in the order they were seen. */
973 p = CPP_OPTION (pfile, pending)->directive_head;
976 (*p->handler) (pfile, p->arg);
981 pfile->done_initializing = 1;
983 /* The -imacros files can be scanned now, but the -include files
984 have to be pushed onto the buffer stack and processed later,
985 otherwise cppmain.c won't see the tokens. include_head was built
986 up as a stack, and popping this stack onto the buffer stack means
987 we preserve the order of the command line. */
988 do_includes (pfile, CPP_OPTION (pfile, pending)->imacros_head, 1);
989 do_includes (pfile, CPP_OPTION (pfile, pending)->include_head, 0);
991 free (CPP_OPTION (pfile, pending));
992 CPP_OPTION (pfile, pending) = NULL;
997 /* This is called at the end of preprocessing. It pops the
998 last buffer and writes dependency output. It should also
999 clear macro definitions, such that you could call cpp_start_read
1000 with a new filename to restart processing. */
1005 if (CPP_BUFFER (pfile))
1007 cpp_ice (pfile, "buffers still stacked in cpp_finish");
1008 while (CPP_BUFFER (pfile))
1009 cpp_pop_buffer (pfile);
1012 /* Don't write the deps file if preprocessing has failed. */
1013 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1015 /* Stream on which to print the dependency information. */
1016 FILE *deps_stream = 0;
1017 const char *deps_mode
1018 = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
1019 if (CPP_OPTION (pfile, deps_file) == 0)
1020 deps_stream = stdout;
1023 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
1024 if (deps_stream == 0)
1025 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
1029 deps_write (pfile->deps, deps_stream, 72);
1030 if (CPP_OPTION (pfile, deps_file))
1032 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1033 cpp_fatal (pfile, "I/O error on output");
1038 /* Report on headers that could use multiple include guards. */
1039 if (CPP_OPTION (pfile, print_include_names))
1040 _cpp_report_missing_guards (pfile);
1044 new_pending_directive (pend, text, handler)
1045 struct cpp_pending *pend;
1047 cl_directive_handler handler;
1049 struct pending_option *o = (struct pending_option *)
1050 xmalloc (sizeof (struct pending_option));
1054 o->handler = handler;
1055 APPEND (pend, directive, o);
1058 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1059 I.e. a const string initializer with parens around it. That is
1060 what N_("string") resolves to, so we make no_* be macros instead. */
1061 #define no_arg N_("Argument missing after %s")
1062 #define no_ass N_("Assertion missing after %s")
1063 #define no_dir N_("Directory name missing after %s")
1064 #define no_fil N_("File name missing after %s")
1065 #define no_mac N_("Macro name missing after %s")
1066 #define no_pth N_("Path name missing after %s")
1067 #define no_num N_("Number missing after %s")
1069 /* This is the list of all command line options, with the leading
1070 "-" removed. It must be sorted in ASCII collating order. */
1071 #define COMMAND_LINE_OPTIONS \
1072 DEF_OPT("", 0, OPT_stdin_stdout) \
1073 DEF_OPT("$", 0, OPT_dollar) \
1074 DEF_OPT("+", 0, OPT_plus) \
1075 DEF_OPT("-help", 0, OPT__help) \
1076 DEF_OPT("-target-help", 0, OPT_target__help) \
1077 DEF_OPT("-version", 0, OPT__version) \
1078 DEF_OPT("A", no_ass, OPT_A) \
1079 DEF_OPT("C", 0, OPT_C) \
1080 DEF_OPT("D", no_mac, OPT_D) \
1081 DEF_OPT("H", 0, OPT_H) \
1082 DEF_OPT("I", no_dir, OPT_I) \
1083 DEF_OPT("M", 0, OPT_M) \
1084 DEF_OPT("MD", no_fil, OPT_MD) \
1085 DEF_OPT("MG", 0, OPT_MG) \
1086 DEF_OPT("MM", 0, OPT_MM) \
1087 DEF_OPT("MMD", no_fil, OPT_MMD) \
1088 DEF_OPT("P", 0, OPT_P) \
1089 DEF_OPT("U", no_mac, OPT_U) \
1090 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1091 DEF_OPT("d", no_arg, OPT_d) \
1092 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1093 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1094 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1095 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1096 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1097 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1098 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1099 DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
1100 DEF_OPT("h", 0, OPT_h) \
1101 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1102 DEF_OPT("imacros", no_fil, OPT_imacros) \
1103 DEF_OPT("include", no_fil, OPT_include) \
1104 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1105 DEF_OPT("isystem", no_dir, OPT_isystem) \
1106 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1107 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1108 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1109 DEF_OPT("lang-c", 0, OPT_lang_c) \
1110 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1111 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1112 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1113 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1114 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1115 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1116 DEF_OPT("o", no_fil, OPT_o) \
1117 DEF_OPT("pedantic", 0, OPT_pedantic) \
1118 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1119 DEF_OPT("remap", 0, OPT_remap) \
1120 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1121 DEF_OPT("std=c89", 0, OPT_std_c89) \
1122 DEF_OPT("std=c99", 0, OPT_std_c99) \
1123 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1124 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1125 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1126 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1127 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1128 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1129 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1130 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1131 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1132 DEF_OPT("v", 0, OPT_v) \
1133 DEF_OPT("w", 0, OPT_w)
1135 #define DEF_OPT(text, msg, code) code,
1138 COMMAND_LINE_OPTIONS
1145 const char *opt_text;
1148 enum opt_code opt_code;
1151 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1153 static struct cl_option cl_options[] =
1155 static const struct cl_option cl_options[] =
1158 COMMAND_LINE_OPTIONS
1161 #undef COMMAND_LINE_OPTIONS
1163 /* Perform a binary search to find which, if any, option the given
1164 command-line matches. Returns its index in the option array,
1165 negative on failure. Complications arise since some options can be
1166 suffixed with an argument, and multiple complete matches can occur,
1167 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1168 accept options beginning with -g and -W that we do not recognise,
1169 but not to swallow any subsequent command line argument; these are
1170 handled as special cases in cpp_handle_option. */
1172 parse_option (input)
1175 unsigned int md, mn, mx;
1186 opt_len = cl_options[md].opt_len;
1187 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1195 if (input[opt_len] == '\0')
1197 /* We were passed more text. If the option takes an argument,
1198 we may match a later option or we may have been passed the
1199 argument. The longest possible option match succeeds.
1200 If the option takes no arguments we have not matched and
1201 continue the search (e.g. input="stdc++" match was "stdc"). */
1203 if (cl_options[md].msg)
1205 /* Scan forwards. If we get an exact match, return it.
1206 Otherwise, return the longest option-accepting match.
1207 This loops no more than twice with current options. */
1209 for (; mn < N_OPTS; mn++)
1211 opt_len = cl_options[mn].opt_len;
1212 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1214 if (input[opt_len] == '\0')
1216 if (cl_options[mn].msg)
1227 /* Handle one command-line option in (argc, argv).
1228 Can be called multiple times, to handle multiple sets of options.
1229 Returns number of strings consumed. */
1232 cpp_handle_option (pfile, argc, argv)
1238 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1240 if (argv[i][0] != '-')
1242 if (CPP_OPTION (pfile, out_fname) != NULL)
1243 cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
1245 else if (CPP_OPTION (pfile, in_fname) != NULL)
1246 CPP_OPTION (pfile, out_fname) = argv[i];
1248 CPP_OPTION (pfile, in_fname) = argv[i];
1252 enum opt_code opt_code;
1254 const char *arg = 0;
1256 /* Skip over '-'. */
1257 opt_index = parse_option (&argv[i][1]);
1261 opt_code = cl_options[opt_index].opt_code;
1262 if (cl_options[opt_index].msg)
1264 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1266 /* Yuk. Special case for -g and -W as they must not swallow
1267 up any following argument. If this becomes common, add
1268 another field to the cl_options table. */
1269 if (arg[0] == '\0' && !(opt_code == OPT_g || opt_code == OPT_W))
1274 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1282 case N_OPTS: /* Shut GCC up. */
1284 case OPT_fleading_underscore:
1285 CPP_OPTION (pfile, user_label_prefix) = "_";
1287 case OPT_fno_leading_underscore:
1288 CPP_OPTION (pfile, user_label_prefix) = "";
1290 case OPT_fpreprocessed:
1291 CPP_OPTION (pfile, preprocessed) = 1;
1293 case OPT_fno_preprocessed:
1294 CPP_OPTION (pfile, preprocessed) = 0;
1296 case OPT_fshow_column:
1297 CPP_OPTION (pfile, show_column) = 1;
1299 case OPT_fno_show_column:
1300 CPP_OPTION (pfile, show_column) = 0;
1303 /* Silently ignore empty string, non-longs and silly values. */
1307 long tabstop = strtol (arg, &endptr, 10);
1308 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1309 CPP_OPTION (pfile, tabstop) = tabstop;
1313 CPP_OPTION (pfile, inhibit_warnings) = 1;
1315 case OPT_g: /* Silently ignore anything but -g3. */
1316 if (!strcmp(&argv[i][2], "3"))
1317 CPP_OPTION (pfile, debug_output) = 1;
1324 case OPT_target__help:
1325 /* Print if any target specific options. */
1329 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1333 CPP_OPTION (pfile, discard_comments) = 0;
1336 CPP_OPTION (pfile, no_line_commands) = 1;
1338 case OPT_dollar: /* Don't include $ in identifiers. */
1339 CPP_OPTION (pfile, dollars_in_ident) = 0;
1342 CPP_OPTION (pfile, print_include_names) = 1;
1345 new_pending_directive (pend, arg, cpp_define);
1347 case OPT_pedantic_errors:
1348 CPP_OPTION (pfile, pedantic_errors) = 1;
1351 CPP_OPTION (pfile, pedantic) = 1;
1354 CPP_OPTION (pfile, trigraphs) = 1;
1357 CPP_OPTION (pfile, cplusplus) = 1;
1358 CPP_OPTION (pfile, cplusplus_comments) = 1;
1361 CPP_OPTION (pfile, remap) = 1;
1364 CPP_OPTION (pfile, include_prefix) = arg;
1365 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1368 set_lang (pfile, CLK_GNUC89);
1370 case OPT_lang_cplusplus:
1371 set_lang (pfile, CLK_GNUCXX);
1374 set_lang (pfile, CLK_OBJC);
1376 case OPT_lang_objcplusplus:
1377 set_lang (pfile, CLK_OBJCXX);
1380 set_lang (pfile, CLK_ASM);
1382 case OPT_std_cplusplus98:
1383 set_lang (pfile, CLK_CXX98);
1386 set_lang (pfile, CLK_GNUC89);
1390 set_lang (pfile, CLK_GNUC99);
1392 case OPT_std_iso9899_199409:
1393 set_lang (pfile, CLK_STDC94);
1395 case OPT_std_iso9899_1990:
1398 set_lang (pfile, CLK_STDC89);
1400 case OPT_std_iso9899_199x:
1401 case OPT_std_iso9899_1999:
1404 set_lang (pfile, CLK_STDC99);
1407 /* -nostdinc causes no default include directories.
1408 You must specify all include-file directories with -I. */
1409 CPP_OPTION (pfile, no_standard_includes) = 1;
1411 case OPT_nostdincplusplus:
1412 /* -nostdinc++ causes no default C++-specific include directories. */
1413 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1416 if (CPP_OPTION (pfile, out_fname) != NULL)
1418 cpp_fatal (pfile, "Output filename specified twice");
1421 CPP_OPTION (pfile, out_fname) = arg;
1422 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1423 CPP_OPTION (pfile, out_fname) = "";
1426 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1427 #ifdef TARGET_VERSION
1430 fputc ('\n', stderr);
1431 CPP_OPTION (pfile, verbose) = 1;
1433 case OPT_stdin_stdout:
1434 /* JF handle '-' as file name meaning stdin or stdout. */
1435 if (CPP_OPTION (pfile, in_fname) == NULL)
1436 CPP_OPTION (pfile, in_fname) = "";
1437 else if (CPP_OPTION (pfile, out_fname) == NULL)
1438 CPP_OPTION (pfile, out_fname) = "";
1441 /* Args to -d specify what parts of macros to dump.
1442 Silently ignore unrecognised options; they may
1443 be aimed at the compiler proper. */
1447 while ((c = *arg++) != '\0')
1451 CPP_OPTION (pfile, dump_macros) = dump_only;
1452 CPP_OPTION (pfile, no_output) = 1;
1455 CPP_OPTION (pfile, dump_macros) = dump_names;
1458 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1461 CPP_OPTION (pfile, dump_includes) = 1;
1466 /* The style of the choices here is a bit mixed.
1467 The chosen scheme is a hybrid of keeping all options in one string
1468 and specifying each option in a separate argument:
1469 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1470 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1471 -M[M][G][D file]. This is awkward to handle in specs, and is not
1473 /* ??? -MG must be specified in addition to one of -M or -MM.
1474 This can be relaxed in the future without breaking anything.
1475 The converse isn't true. */
1477 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1479 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1485 if (opt_code == OPT_M || opt_code == OPT_MD)
1486 CPP_OPTION (pfile, print_deps) = 2;
1488 CPP_OPTION (pfile, print_deps) = 1;
1490 /* For -MD and -MMD, write deps on file named by next arg. */
1491 /* For -M and -MM, write deps on standard output and
1492 suppress the usual output. */
1493 if (opt_code == OPT_MD || opt_code == OPT_MMD)
1494 CPP_OPTION (pfile, deps_file) = arg;
1496 CPP_OPTION (pfile, no_output) = 1;
1501 /* -A with an argument beginning with '-' acts as
1502 #unassert on whatever immediately follows the '-'.
1503 If "-" is the whole argument, we eliminate all
1504 predefined macros and assertions, including those
1505 that were specified earlier on the command line.
1506 That way we can get rid of any that were passed
1507 automatically in from GCC. */
1511 struct pending_option *o1, *o2;
1513 o1 = pend->directive_head;
1520 pend->directive_head = NULL;
1521 pend->directive_tail = NULL;
1524 new_pending_directive (pend, arg + 1, cpp_unassert);
1527 new_pending_directive (pend, arg, cpp_assert);
1530 new_pending_directive (pend, arg, cpp_undef);
1532 case OPT_I: /* Add directory to path for includes. */
1533 if (!strcmp (arg, "-"))
1536 Use the preceding -I directories for #include "..."
1537 but not #include <...>.
1538 Don't search the directory of the present file
1539 for #include "...". (Note that -I. -I- is not the same as
1540 the default setup; -I. uses the compiler's working dir.) */
1541 if (! CPP_OPTION (pfile, ignore_srcdir))
1543 pend->quote_head = pend->brack_head;
1544 pend->quote_tail = pend->brack_tail;
1545 pend->brack_head = 0;
1546 pend->brack_tail = 0;
1547 CPP_OPTION (pfile, ignore_srcdir) = 1;
1551 cpp_fatal (pfile, "-I- specified twice");
1556 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1559 /* Add directory to beginning of system include path, as a system
1560 include directory. */
1561 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1565 struct pending_option *o = (struct pending_option *)
1566 xmalloc (sizeof (struct pending_option));
1569 /* This list has to be built in reverse order so that
1570 when cpp_start_read pushes all the -include files onto
1571 the buffer stack, they will be scanned in forward order. */
1572 o->next = pend->include_head;
1573 pend->include_head = o;
1578 struct pending_option *o = (struct pending_option *)
1579 xmalloc (sizeof (struct pending_option));
1583 APPEND (pend, imacros, o);
1586 case OPT_iwithprefix:
1587 /* Add directory to end of path for includes,
1588 with the default prefix at the front of its name. */
1590 case OPT_iwithprefixbefore:
1591 /* Add directory to main path for includes,
1592 with the default prefix at the front of its name. */
1599 if (CPP_OPTION (pfile, include_prefix) != 0)
1601 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1602 fname = xmalloc (ipl + len + 1);
1603 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1604 memcpy (fname + ipl, arg, len + 1);
1606 else if (cpp_GCC_INCLUDE_DIR_len)
1608 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1609 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1610 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1613 fname = xstrdup (arg);
1615 append_include_chain (pfile, fname,
1616 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1620 /* Add directory to end of path for includes. */
1621 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1624 /* Silently ignore unrecognised options. */
1625 if (!strcmp (argv[i], "-Wall"))
1627 CPP_OPTION (pfile, warn_trigraphs) = 1;
1628 CPP_OPTION (pfile, warn_comments) = 1;
1630 else if (!strcmp (argv[i], "-Wtraditional"))
1631 CPP_OPTION (pfile, warn_traditional) = 1;
1632 else if (!strcmp (argv[i], "-Wtrigraphs"))
1633 CPP_OPTION (pfile, warn_trigraphs) = 1;
1634 else if (!strcmp (argv[i], "-Wcomment"))
1635 CPP_OPTION (pfile, warn_comments) = 1;
1636 else if (!strcmp (argv[i], "-Wcomments"))
1637 CPP_OPTION (pfile, warn_comments) = 1;
1638 else if (!strcmp (argv[i], "-Wundef"))
1639 CPP_OPTION (pfile, warn_undef) = 1;
1640 else if (!strcmp (argv[i], "-Wimport"))
1641 CPP_OPTION (pfile, warn_import) = 1;
1642 else if (!strcmp (argv[i], "-Werror"))
1643 CPP_OPTION (pfile, warnings_are_errors) = 1;
1644 else if (!strcmp (argv[i], "-Wsystem-headers"))
1645 CPP_OPTION (pfile, warn_system_headers) = 1;
1646 else if (!strcmp (argv[i], "-Wno-traditional"))
1647 CPP_OPTION (pfile, warn_traditional) = 0;
1648 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1649 CPP_OPTION (pfile, warn_trigraphs) = 0;
1650 else if (!strcmp (argv[i], "-Wno-comment"))
1651 CPP_OPTION (pfile, warn_comments) = 0;
1652 else if (!strcmp (argv[i], "-Wno-comments"))
1653 CPP_OPTION (pfile, warn_comments) = 0;
1654 else if (!strcmp (argv[i], "-Wno-undef"))
1655 CPP_OPTION (pfile, warn_undef) = 0;
1656 else if (!strcmp (argv[i], "-Wno-import"))
1657 CPP_OPTION (pfile, warn_import) = 0;
1658 else if (!strcmp (argv[i], "-Wno-error"))
1659 CPP_OPTION (pfile, warnings_are_errors) = 0;
1660 else if (!strcmp (argv[i], "-Wno-system-headers"))
1661 CPP_OPTION (pfile, warn_system_headers) = 0;
1670 opt_comp (const void *p1, const void *p2)
1672 return strcmp (((struct cl_option *)p1)->opt_text,
1673 ((struct cl_option *)p2)->opt_text);
1677 /* Handle command-line options in (argc, argv).
1678 Can be called multiple times, to handle multiple sets of options.
1679 Returns if an unrecognized option is seen.
1680 Returns number of strings consumed. */
1682 cpp_handle_options (pfile, argc, argv)
1688 int strings_processed;
1690 for (i = 0; i < argc; i += strings_processed)
1692 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1693 if (strings_processed == 0)
1702 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1703 /* To keep the lines from getting too long for some compilers, limit
1704 to about 500 characters (6 lines) per chunk. */
1707 -include <file> Include the contents of <file> before other files\n\
1708 -imacros <file> Accept definition of macros in <file>\n\
1709 -iprefix <path> Specify <path> as a prefix for next two options\n\
1710 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1711 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1712 -isystem <dir> Add <dir> to the start of the system include path\n\
1715 -idirafter <dir> Add <dir> to the end of the system include path\n\
1716 -I <dir> Add <dir> to the end of the main include path\n\
1717 -I- Fine-grained include path control; see info docs\n\
1718 -nostdinc Do not search system include directories\n\
1719 (dirs specified with -isystem will still be used)\n\
1720 -nostdinc++ Do not search system include directories for C++\n\
1721 -o <file> Put output into <file>\n\
1724 -pedantic Issue all warnings demanded by strict ISO C\n\
1725 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1726 -trigraphs Support ISO C trigraphs\n\
1727 -lang-c Assume that the input sources are in C\n\
1728 -lang-c89 Assume that the input sources are in C89\n\
1731 -lang-c++ Assume that the input sources are in C++\n\
1732 -lang-objc Assume that the input sources are in ObjectiveC\n\
1733 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1734 -lang-asm Assume that the input sources are in assembler\n\
1737 -std=<std name> Specify the conformance standard; one of:\n\
1738 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1739 iso9899:199409, iso9899:1999\n\
1740 -+ Allow parsing of C++ style features\n\
1741 -w Inhibit warning messages\n\
1742 -Wtrigraphs Warn if trigraphs are encountered\n\
1743 -Wno-trigraphs Do not warn about trigraphs\n\
1744 -Wcomment{s} Warn if one comment starts inside another\n\
1747 -Wno-comment{s} Do not warn about comments\n\
1748 -Wtraditional Warn about features not present in traditional C\n\
1749 -Wno-traditional Do not warn about traditional C\n\
1750 -Wundef Warn if an undefined macro is used by #if\n\
1751 -Wno-undef Do not warn about testing undefined macros\n\
1752 -Wimport Warn about the use of the #import directive\n\
1755 -Wno-import Do not warn about the use of #import\n\
1756 -Werror Treat all warnings as errors\n\
1757 -Wno-error Do not treat warnings as errors\n\
1758 -Wsystem-headers Do not suppress warnings from system headers\n\
1759 -Wno-system-headers Suppress warnings from system headers\n\
1760 -Wall Enable all preprocessor warnings\n\
1763 -M Generate make dependencies\n\
1764 -MM As -M, but ignore system header files\n\
1765 -MD As -M, but put output in a .d file\n\
1766 -MMD As -MD, but ignore system header files\n\
1767 -MG Treat missing header file as generated files\n\
1768 -g3 Include #define and #undef directives in the output\n\
1771 -D<macro> Define a <macro> with string '1' as its value\n\
1772 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1773 -A<question> (<answer>) Assert the <answer> to <question>\n\
1774 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1775 -U<macro> Undefine <macro> \n\
1776 -v Display the version number\n\
1779 -H Print the name of header files as they are used\n\
1780 -C Do not discard comments\n\
1781 -dM Display a list of macro definitions active at end\n\
1782 -dD Preserve macro definitions in output\n\
1783 -dN As -dD except that only the names are preserved\n\
1784 -dI Include #include directives in the output\n\
1787 -ftabstop=<number> Distance between tab stops for column reporting\n\
1788 -P Do not generate #line directives\n\
1789 -$ Do not allow '$' in identifiers\n\
1790 -remap Remap file names when including files.\n\
1791 --version Display version information\n\
1792 -h or --help Display this information\n\