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;
494 CPP_OPTION (pfile, operator_names) = 1;
496 CPP_OPTION (pfile, pending) =
497 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
499 /* After creating pfile->pending. */
500 set_lang (pfile, lang);
502 /* Initialize lexer state. */
503 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
505 /* Indicate date and time not yet calculated. */
506 pfile->date.type = CPP_EOF;
508 /* Initialise the base context. */
509 pfile->context = &pfile->base_context;
510 pfile->base_context.macro = 0;
511 pfile->base_context.prev = pfile->base_context.next = 0;
513 /* Identifier pool initially 8K. Unaligned, permanent pool. */
514 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
516 /* String and number pool initially 4K. Unaligned, temporary pool. */
517 _cpp_init_pool (&pfile->temp_string_pool, 4 * 1024, 1, 1);
519 /* Argument pool initially 8K. Aligned, temporary pool. */
520 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
522 /* Macro pool initially 8K. Aligned, permanent pool. */
523 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
525 /* Start with temporary pool. */
526 pfile->string_pool = &pfile->temp_string_pool;
528 _cpp_init_hashtable (pfile);
529 _cpp_init_stacks (pfile);
530 _cpp_init_includes (pfile);
531 _cpp_init_internal_pragmas (pfile);
533 /* Initialize the special nodes. */
534 s = &pfile->spec_nodes;
535 s->n_L = cpp_lookup (pfile, DSC("L"));
536 s->n_defined = cpp_lookup (pfile, DSC("defined"));
537 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
538 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
539 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
540 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
541 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
546 /* Free resources used by PFILE.
547 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
552 struct file_name_list *dir, *dirn;
553 cpp_context *context, *contextn;
555 while (CPP_BUFFER (pfile) != NULL)
556 cpp_pop_buffer (pfile);
558 if (pfile->macro_buffer)
559 free ((PTR) pfile->macro_buffer);
562 deps_free (pfile->deps);
564 _cpp_cleanup_includes (pfile);
565 _cpp_cleanup_stacks (pfile);
566 _cpp_cleanup_hashtable (pfile);
568 _cpp_free_lookaheads (pfile);
570 _cpp_free_pool (&pfile->ident_pool);
571 _cpp_free_pool (&pfile->temp_string_pool);
572 _cpp_free_pool (&pfile->macro_pool);
573 _cpp_free_pool (&pfile->argument_pool);
575 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
582 for (context = pfile->base_context.next; context; context = contextn)
584 contextn = context->next;
590 /* This structure defines one built-in identifier. A node will be
591 entered in the hash table under the name NAME, with value VALUE (if
592 any). If flags has OPERATOR, the node's operator field is used; if
593 flags has BUILTIN the node's builtin field is used.
595 Two values are not compile time constants, so we tag
596 them in the FLAGS field instead:
597 VERS value is the global version_string, quoted
598 ULP value is the global user_label_prefix
600 Also, macros with CPLUS set in the flags field are entered only for C++. */
606 unsigned char builtin;
607 unsigned char operator;
608 unsigned short flags;
615 #define OPERATOR 0x10
617 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
618 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
619 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
620 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
621 static const struct builtin builtin_array[] =
623 B("__TIME__", BT_TIME),
624 B("__DATE__", BT_DATE),
625 B("__FILE__", BT_FILE),
626 B("__BASE_FILE__", BT_BASE_FILE),
627 B("__LINE__", BT_SPECLINE),
628 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
629 B("__STDC__", BT_STDC),
631 X("__VERSION__", VERS),
632 X("__USER_LABEL_PREFIX__", ULP),
633 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
634 C("__HAVE_BUILTIN_SETJMP__", "1"),
635 #ifndef NO_BUILTIN_SIZE_TYPE
636 C("__SIZE_TYPE__", SIZE_TYPE),
638 #ifndef NO_BUILTIN_PTRDIFF_TYPE
639 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
641 #ifndef NO_BUILTIN_WCHAR_TYPE
642 C("__WCHAR_TYPE__", WCHAR_TYPE),
644 #ifndef NO_BUILTIN_WINT_TYPE
645 C("__WINT_TYPE__", WINT_TYPE),
648 /* Named operators known to the preprocessor. These cannot be #defined
649 and always have their stated meaning. They are treated like normal
650 identifiers except for the type code and the meaning. Most of them
651 are only for C++ (but see iso646.h). */
652 O("and", CPP_AND_AND, CPLUS),
653 O("and_eq", CPP_AND_EQ, CPLUS),
654 O("bitand", CPP_AND, CPLUS),
655 O("bitor", CPP_OR, CPLUS),
656 O("compl", CPP_COMPL, CPLUS),
657 O("not", CPP_NOT, CPLUS),
658 O("not_eq", CPP_NOT_EQ, CPLUS),
659 O("or", CPP_OR_OR, CPLUS),
660 O("or_eq", CPP_OR_EQ, CPLUS),
661 O("xor", CPP_XOR, CPLUS),
662 O("xor_eq", CPP_XOR_EQ, CPLUS)
668 #define builtin_array_end \
669 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
671 /* Subroutine of cpp_start_read; reads the builtins table above and
672 enters the macros into the hash table. */
674 initialize_builtins (pfile)
677 const struct builtin *b;
679 for(b = builtin_array; b < builtin_array_end; b++)
681 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
684 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
687 if (b->flags & (OPERATOR | BUILTIN))
689 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
690 if (b->flags & OPERATOR)
692 hp->flags |= NODE_OPERATOR;
693 hp->value.operator = b->operator;
698 hp->flags |= NODE_BUILTIN;
699 hp->value.builtin = b->builtin;
702 else /* A standard macro of some kind. */
709 /* Allocate enough space for 'name "value"\n\0'. */
710 str = alloca (b->len + strlen (version_string) + 5);
711 sprintf (str, "%s \"%s\"\n", b->name, version_string);
716 val = CPP_OPTION (pfile, user_label_prefix);
720 /* Allocate enough space for "name value\n\0". */
721 str = alloca (b->len + strlen (val) + 3);
722 sprintf(str, "%s %s\n", b->name, val);
725 _cpp_define_builtin (pfile, str);
734 #undef builtin_array_end
736 /* Another subroutine of cpp_start_read. This one sets up to do
737 dependency-file output. */
739 initialize_dependency_output (pfile)
742 char *spec, *s, *output_file;
744 /* Either of two environment variables can specify output of deps.
745 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
746 where OUTPUT_FILE is the file to write deps info to
747 and DEPS_TARGET is the target to mention in the deps. */
749 if (CPP_OPTION (pfile, print_deps) == 0)
751 spec = getenv ("DEPENDENCIES_OUTPUT");
753 CPP_OPTION (pfile, print_deps) = 1;
756 spec = getenv ("SUNPRO_DEPENDENCIES");
758 CPP_OPTION (pfile, print_deps) = 2;
763 /* Find the space before the DEPS_TARGET, if there is one. */
764 s = strchr (spec, ' ');
767 CPP_OPTION (pfile, deps_target) = s + 1;
768 output_file = (char *) xmalloc (s - spec + 1);
769 memcpy (output_file, spec, s - spec);
770 output_file[s - spec] = 0;
774 CPP_OPTION (pfile, deps_target) = 0;
778 CPP_OPTION (pfile, deps_file) = output_file;
779 CPP_OPTION (pfile, print_deps_append) = 1;
782 pfile->deps = deps_init ();
784 /* Print the expected object file name as the target of this Make-rule. */
785 if (CPP_OPTION (pfile, deps_target))
786 deps_add_target (pfile->deps, CPP_OPTION (pfile, deps_target));
787 else if (*CPP_OPTION (pfile, in_fname) == 0)
788 deps_add_target (pfile->deps, "-");
790 deps_calc_target (pfile->deps, CPP_OPTION (pfile, in_fname));
792 if (CPP_OPTION (pfile, in_fname))
793 deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
796 /* And another subroutine. This one sets up the standard include path. */
798 initialize_standard_includes (pfile)
802 const struct default_include *p;
803 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
805 /* Several environment variables may add to the include search path.
806 CPATH specifies an additional list of directories to be searched
807 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
808 etc. specify an additional list of directories to be searched as
809 if specified with -isystem, for the language indicated. */
811 GET_ENV_PATH_LIST (path, "CPATH");
812 if (path != 0 && *path != 0)
813 path_include (pfile, path, BRACKET);
815 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
818 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
821 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
824 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
827 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
830 if (path != 0 && *path != 0)
831 path_include (pfile, path, SYSTEM);
833 /* Search "translated" versions of GNU directories.
834 These have /usr/local/lib/gcc... replaced by specd_prefix. */
835 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
837 /* Remove the `include' from /usr/local/lib/gcc.../include.
838 GCC_INCLUDE_DIR will always end in /include. */
839 int default_len = cpp_GCC_INCLUDE_DIR_len;
840 char *default_prefix = (char *) alloca (default_len + 1);
841 int specd_len = strlen (specd_prefix);
843 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
844 default_prefix[default_len] = '\0';
846 for (p = cpp_include_defaults; p->fname; p++)
848 /* Some standard dirs are only for C++. */
850 || (CPP_OPTION (pfile, cplusplus)
851 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
853 /* Does this dir start with the prefix? */
854 if (!memcmp (p->fname, default_prefix, default_len))
856 /* Yes; change prefix and add to search list. */
857 int flen = strlen (p->fname);
858 int this_len = specd_len + flen - default_len;
859 char *str = (char *) xmalloc (this_len + 1);
860 memcpy (str, specd_prefix, specd_len);
861 memcpy (str + specd_len,
862 p->fname + default_len,
863 flen - default_len + 1);
865 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
871 /* Search ordinary names for GNU include directories. */
872 for (p = cpp_include_defaults; p->fname; p++)
874 /* Some standard dirs are only for C++. */
876 || (CPP_OPTION (pfile, cplusplus)
877 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
879 char *str = xstrdup (update_path (p->fname, p->component));
880 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
885 /* Handles -imacro and -include from the command line. */
887 do_includes (pfile, p, scan)
889 struct pending_option *p;
894 struct pending_option *q;
896 /* Later: maybe update this to use the #include "" search path
897 if cpp_read_file fails. */
898 if (_cpp_read_file (pfile, p->arg) && scan)
899 cpp_scan_buffer_nooutput (pfile, 0);
906 /* This is called after options have been processed. Check options
907 for consistency, and setup for processing input from the file named
908 FNAME. (Use standard input if FNAME == NULL.) Return 1 on success,
912 cpp_start_read (pfile, fname)
916 struct pending_option *p, *q;
918 /* -MG doesn't select the form of output and must be specified with one of
919 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
920 inhibit compilation. */
921 if (CPP_OPTION (pfile, print_deps_missing_files)
922 && (CPP_OPTION (pfile, print_deps) == 0
923 || !CPP_OPTION (pfile, no_output)))
925 cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
929 /* -Wtraditional is not useful in C++ mode. */
930 if (CPP_OPTION (pfile, cplusplus))
931 CPP_OPTION (pfile, warn_traditional) = 0;
933 /* Set this if it hasn't been set already. */
934 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
935 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
937 /* Set up the include search path now. */
938 if (! CPP_OPTION (pfile, no_standard_includes))
939 initialize_standard_includes (pfile);
941 merge_include_chains (pfile);
943 /* With -v, print the list of dirs to search. */
944 if (CPP_OPTION (pfile, verbose))
946 struct file_name_list *l;
947 fprintf (stderr, _("#include \"...\" search starts here:\n"));
948 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
950 if (l == CPP_OPTION (pfile, bracket_include))
951 fprintf (stderr, _("#include <...> search starts here:\n"));
952 fprintf (stderr, " %s\n", l->name);
954 fprintf (stderr, _("End of search list.\n"));
957 /* Open the main input file. This must be done early, so we have a
958 buffer to stand on. */
959 if (CPP_OPTION (pfile, in_fname) == NULL
960 || *CPP_OPTION (pfile, in_fname) == 0)
962 CPP_OPTION (pfile, in_fname) = fname;
963 if (CPP_OPTION (pfile, in_fname) == NULL)
964 CPP_OPTION (pfile, in_fname) = "";
966 if (CPP_OPTION (pfile, out_fname) == NULL)
967 CPP_OPTION (pfile, out_fname) = "";
969 if (!_cpp_read_file (pfile, fname))
972 initialize_dependency_output (pfile);
974 /* Install __LINE__, etc. */
975 initialize_builtins (pfile);
977 /* Do -U's, -D's and -A's in the order they were seen. */
978 p = CPP_OPTION (pfile, pending)->directive_head;
981 (*p->handler) (pfile, p->arg);
986 pfile->done_initializing = 1;
988 /* The -imacros files can be scanned now, but the -include files
989 have to be pushed onto the buffer stack and processed later,
990 otherwise cppmain.c won't see the tokens. include_head was built
991 up as a stack, and popping this stack onto the buffer stack means
992 we preserve the order of the command line. */
993 do_includes (pfile, CPP_OPTION (pfile, pending)->imacros_head, 1);
994 do_includes (pfile, CPP_OPTION (pfile, pending)->include_head, 0);
996 free (CPP_OPTION (pfile, pending));
997 CPP_OPTION (pfile, pending) = NULL;
1002 /* This is called at the end of preprocessing. It pops the
1003 last buffer and writes dependency output. It should also
1004 clear macro definitions, such that you could call cpp_start_read
1005 with a new filename to restart processing. */
1010 if (CPP_BUFFER (pfile))
1012 cpp_ice (pfile, "buffers still stacked in cpp_finish");
1013 while (CPP_BUFFER (pfile))
1014 cpp_pop_buffer (pfile);
1017 /* Don't write the deps file if preprocessing has failed. */
1018 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1020 /* Stream on which to print the dependency information. */
1021 FILE *deps_stream = 0;
1022 const char *deps_mode
1023 = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
1024 if (CPP_OPTION (pfile, deps_file) == 0)
1025 deps_stream = stdout;
1028 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
1029 if (deps_stream == 0)
1030 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
1034 deps_write (pfile->deps, deps_stream, 72);
1035 if (CPP_OPTION (pfile, deps_file))
1037 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1038 cpp_fatal (pfile, "I/O error on output");
1043 /* Report on headers that could use multiple include guards. */
1044 if (CPP_OPTION (pfile, print_include_names))
1045 _cpp_report_missing_guards (pfile);
1049 new_pending_directive (pend, text, handler)
1050 struct cpp_pending *pend;
1052 cl_directive_handler handler;
1054 struct pending_option *o = (struct pending_option *)
1055 xmalloc (sizeof (struct pending_option));
1059 o->handler = handler;
1060 APPEND (pend, directive, o);
1063 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1064 I.e. a const string initializer with parens around it. That is
1065 what N_("string") resolves to, so we make no_* be macros instead. */
1066 #define no_arg N_("Argument missing after %s")
1067 #define no_ass N_("Assertion missing after %s")
1068 #define no_dir N_("Directory name missing after %s")
1069 #define no_fil N_("File name missing after %s")
1070 #define no_mac N_("Macro name missing after %s")
1071 #define no_pth N_("Path name missing after %s")
1072 #define no_num N_("Number missing after %s")
1074 /* This is the list of all command line options, with the leading
1075 "-" removed. It must be sorted in ASCII collating order. */
1076 #define COMMAND_LINE_OPTIONS \
1077 DEF_OPT("", 0, OPT_stdin_stdout) \
1078 DEF_OPT("$", 0, OPT_dollar) \
1079 DEF_OPT("+", 0, OPT_plus) \
1080 DEF_OPT("-help", 0, OPT__help) \
1081 DEF_OPT("-target-help", 0, OPT_target__help) \
1082 DEF_OPT("-version", 0, OPT__version) \
1083 DEF_OPT("A", no_ass, OPT_A) \
1084 DEF_OPT("C", 0, OPT_C) \
1085 DEF_OPT("D", no_mac, OPT_D) \
1086 DEF_OPT("H", 0, OPT_H) \
1087 DEF_OPT("I", no_dir, OPT_I) \
1088 DEF_OPT("M", 0, OPT_M) \
1089 DEF_OPT("MD", no_fil, OPT_MD) \
1090 DEF_OPT("MG", 0, OPT_MG) \
1091 DEF_OPT("MM", 0, OPT_MM) \
1092 DEF_OPT("MMD", no_fil, OPT_MMD) \
1093 DEF_OPT("P", 0, OPT_P) \
1094 DEF_OPT("U", no_mac, OPT_U) \
1095 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1096 DEF_OPT("d", no_arg, OPT_d) \
1097 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1098 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1099 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1100 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1101 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1102 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1103 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1104 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1105 DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
1106 DEF_OPT("h", 0, OPT_h) \
1107 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1108 DEF_OPT("imacros", no_fil, OPT_imacros) \
1109 DEF_OPT("include", no_fil, OPT_include) \
1110 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1111 DEF_OPT("isystem", no_dir, OPT_isystem) \
1112 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1113 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1114 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1115 DEF_OPT("lang-c", 0, OPT_lang_c) \
1116 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1117 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1118 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1119 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1120 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1121 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1122 DEF_OPT("o", no_fil, OPT_o) \
1123 DEF_OPT("pedantic", 0, OPT_pedantic) \
1124 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1125 DEF_OPT("remap", 0, OPT_remap) \
1126 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1127 DEF_OPT("std=c89", 0, OPT_std_c89) \
1128 DEF_OPT("std=c99", 0, OPT_std_c99) \
1129 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1130 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1131 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1132 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1133 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1134 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1135 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1136 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1137 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1138 DEF_OPT("v", 0, OPT_v) \
1139 DEF_OPT("w", 0, OPT_w)
1141 #define DEF_OPT(text, msg, code) code,
1144 COMMAND_LINE_OPTIONS
1151 const char *opt_text;
1154 enum opt_code opt_code;
1157 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1159 static struct cl_option cl_options[] =
1161 static const struct cl_option cl_options[] =
1164 COMMAND_LINE_OPTIONS
1167 #undef COMMAND_LINE_OPTIONS
1169 /* Perform a binary search to find which, if any, option the given
1170 command-line matches. Returns its index in the option array,
1171 negative on failure. Complications arise since some options can be
1172 suffixed with an argument, and multiple complete matches can occur,
1173 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1174 accept options beginning with -g and -W that we do not recognise,
1175 but not to swallow any subsequent command line argument; these are
1176 handled as special cases in cpp_handle_option. */
1178 parse_option (input)
1181 unsigned int md, mn, mx;
1192 opt_len = cl_options[md].opt_len;
1193 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1201 if (input[opt_len] == '\0')
1203 /* We were passed more text. If the option takes an argument,
1204 we may match a later option or we may have been passed the
1205 argument. The longest possible option match succeeds.
1206 If the option takes no arguments we have not matched and
1207 continue the search (e.g. input="stdc++" match was "stdc"). */
1209 if (cl_options[md].msg)
1211 /* Scan forwards. If we get an exact match, return it.
1212 Otherwise, return the longest option-accepting match.
1213 This loops no more than twice with current options. */
1215 for (; mn < N_OPTS; mn++)
1217 opt_len = cl_options[mn].opt_len;
1218 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1220 if (input[opt_len] == '\0')
1222 if (cl_options[mn].msg)
1233 /* Handle one command-line option in (argc, argv).
1234 Can be called multiple times, to handle multiple sets of options.
1235 Returns number of strings consumed. */
1238 cpp_handle_option (pfile, argc, argv)
1244 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1246 if (argv[i][0] != '-')
1248 if (CPP_OPTION (pfile, out_fname) != NULL)
1249 cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
1251 else if (CPP_OPTION (pfile, in_fname) != NULL)
1252 CPP_OPTION (pfile, out_fname) = argv[i];
1254 CPP_OPTION (pfile, in_fname) = argv[i];
1258 enum opt_code opt_code;
1260 const char *arg = 0;
1262 /* Skip over '-'. */
1263 opt_index = parse_option (&argv[i][1]);
1267 opt_code = cl_options[opt_index].opt_code;
1268 if (cl_options[opt_index].msg)
1270 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1272 /* Yuk. Special case for -g and -W as they must not swallow
1273 up any following argument. If this becomes common, add
1274 another field to the cl_options table. */
1275 if (arg[0] == '\0' && !(opt_code == OPT_g || opt_code == OPT_W))
1280 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1288 case N_OPTS: /* Shut GCC up. */
1290 case OPT_fleading_underscore:
1291 CPP_OPTION (pfile, user_label_prefix) = "_";
1293 case OPT_fno_leading_underscore:
1294 CPP_OPTION (pfile, user_label_prefix) = "";
1296 case OPT_fno_operator_names:
1297 CPP_OPTION (pfile, operator_names) = 0;
1299 case OPT_fpreprocessed:
1300 CPP_OPTION (pfile, preprocessed) = 1;
1302 case OPT_fno_preprocessed:
1303 CPP_OPTION (pfile, preprocessed) = 0;
1305 case OPT_fshow_column:
1306 CPP_OPTION (pfile, show_column) = 1;
1308 case OPT_fno_show_column:
1309 CPP_OPTION (pfile, show_column) = 0;
1312 /* Silently ignore empty string, non-longs and silly values. */
1316 long tabstop = strtol (arg, &endptr, 10);
1317 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1318 CPP_OPTION (pfile, tabstop) = tabstop;
1322 CPP_OPTION (pfile, inhibit_warnings) = 1;
1324 case OPT_g: /* Silently ignore anything but -g3. */
1325 if (!strcmp(&argv[i][2], "3"))
1326 CPP_OPTION (pfile, debug_output) = 1;
1333 case OPT_target__help:
1334 /* Print if any target specific options. */
1338 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1342 CPP_OPTION (pfile, discard_comments) = 0;
1345 CPP_OPTION (pfile, no_line_commands) = 1;
1347 case OPT_dollar: /* Don't include $ in identifiers. */
1348 CPP_OPTION (pfile, dollars_in_ident) = 0;
1351 CPP_OPTION (pfile, print_include_names) = 1;
1354 new_pending_directive (pend, arg, cpp_define);
1356 case OPT_pedantic_errors:
1357 CPP_OPTION (pfile, pedantic_errors) = 1;
1360 CPP_OPTION (pfile, pedantic) = 1;
1363 CPP_OPTION (pfile, trigraphs) = 1;
1366 CPP_OPTION (pfile, cplusplus) = 1;
1367 CPP_OPTION (pfile, cplusplus_comments) = 1;
1370 CPP_OPTION (pfile, remap) = 1;
1373 CPP_OPTION (pfile, include_prefix) = arg;
1374 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1377 set_lang (pfile, CLK_GNUC89);
1379 case OPT_lang_cplusplus:
1380 set_lang (pfile, CLK_GNUCXX);
1383 set_lang (pfile, CLK_OBJC);
1385 case OPT_lang_objcplusplus:
1386 set_lang (pfile, CLK_OBJCXX);
1389 set_lang (pfile, CLK_ASM);
1391 case OPT_std_cplusplus98:
1392 set_lang (pfile, CLK_CXX98);
1395 set_lang (pfile, CLK_GNUC89);
1399 set_lang (pfile, CLK_GNUC99);
1401 case OPT_std_iso9899_199409:
1402 set_lang (pfile, CLK_STDC94);
1404 case OPT_std_iso9899_1990:
1407 set_lang (pfile, CLK_STDC89);
1409 case OPT_std_iso9899_199x:
1410 case OPT_std_iso9899_1999:
1413 set_lang (pfile, CLK_STDC99);
1416 /* -nostdinc causes no default include directories.
1417 You must specify all include-file directories with -I. */
1418 CPP_OPTION (pfile, no_standard_includes) = 1;
1420 case OPT_nostdincplusplus:
1421 /* -nostdinc++ causes no default C++-specific include directories. */
1422 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1425 if (CPP_OPTION (pfile, out_fname) != NULL)
1427 cpp_fatal (pfile, "Output filename specified twice");
1430 CPP_OPTION (pfile, out_fname) = arg;
1431 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1432 CPP_OPTION (pfile, out_fname) = "";
1435 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1436 #ifdef TARGET_VERSION
1439 fputc ('\n', stderr);
1440 CPP_OPTION (pfile, verbose) = 1;
1442 case OPT_stdin_stdout:
1443 /* JF handle '-' as file name meaning stdin or stdout. */
1444 if (CPP_OPTION (pfile, in_fname) == NULL)
1445 CPP_OPTION (pfile, in_fname) = "";
1446 else if (CPP_OPTION (pfile, out_fname) == NULL)
1447 CPP_OPTION (pfile, out_fname) = "";
1450 /* Args to -d specify what parts of macros to dump.
1451 Silently ignore unrecognised options; they may
1452 be aimed at the compiler proper. */
1456 while ((c = *arg++) != '\0')
1460 CPP_OPTION (pfile, dump_macros) = dump_only;
1461 CPP_OPTION (pfile, no_output) = 1;
1464 CPP_OPTION (pfile, dump_macros) = dump_names;
1467 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1470 CPP_OPTION (pfile, dump_includes) = 1;
1475 /* The style of the choices here is a bit mixed.
1476 The chosen scheme is a hybrid of keeping all options in one string
1477 and specifying each option in a separate argument:
1478 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1479 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1480 -M[M][G][D file]. This is awkward to handle in specs, and is not
1482 /* ??? -MG must be specified in addition to one of -M or -MM.
1483 This can be relaxed in the future without breaking anything.
1484 The converse isn't true. */
1486 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1488 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1494 if (opt_code == OPT_M || opt_code == OPT_MD)
1495 CPP_OPTION (pfile, print_deps) = 2;
1497 CPP_OPTION (pfile, print_deps) = 1;
1499 /* For -MD and -MMD, write deps on file named by next arg. */
1500 /* For -M and -MM, write deps on standard output and
1501 suppress the usual output. */
1502 if (opt_code == OPT_MD || opt_code == OPT_MMD)
1503 CPP_OPTION (pfile, deps_file) = arg;
1505 CPP_OPTION (pfile, no_output) = 1;
1510 /* -A with an argument beginning with '-' acts as
1511 #unassert on whatever immediately follows the '-'.
1512 If "-" is the whole argument, we eliminate all
1513 predefined macros and assertions, including those
1514 that were specified earlier on the command line.
1515 That way we can get rid of any that were passed
1516 automatically in from GCC. */
1520 struct pending_option *o1, *o2;
1522 o1 = pend->directive_head;
1529 pend->directive_head = NULL;
1530 pend->directive_tail = NULL;
1533 new_pending_directive (pend, arg + 1, cpp_unassert);
1536 new_pending_directive (pend, arg, cpp_assert);
1539 new_pending_directive (pend, arg, cpp_undef);
1541 case OPT_I: /* Add directory to path for includes. */
1542 if (!strcmp (arg, "-"))
1545 Use the preceding -I directories for #include "..."
1546 but not #include <...>.
1547 Don't search the directory of the present file
1548 for #include "...". (Note that -I. -I- is not the same as
1549 the default setup; -I. uses the compiler's working dir.) */
1550 if (! CPP_OPTION (pfile, ignore_srcdir))
1552 pend->quote_head = pend->brack_head;
1553 pend->quote_tail = pend->brack_tail;
1554 pend->brack_head = 0;
1555 pend->brack_tail = 0;
1556 CPP_OPTION (pfile, ignore_srcdir) = 1;
1560 cpp_fatal (pfile, "-I- specified twice");
1565 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1568 /* Add directory to beginning of system include path, as a system
1569 include directory. */
1570 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1574 struct pending_option *o = (struct pending_option *)
1575 xmalloc (sizeof (struct pending_option));
1578 /* This list has to be built in reverse order so that
1579 when cpp_start_read pushes all the -include files onto
1580 the buffer stack, they will be scanned in forward order. */
1581 o->next = pend->include_head;
1582 pend->include_head = o;
1587 struct pending_option *o = (struct pending_option *)
1588 xmalloc (sizeof (struct pending_option));
1592 APPEND (pend, imacros, o);
1595 case OPT_iwithprefix:
1596 /* Add directory to end of path for includes,
1597 with the default prefix at the front of its name. */
1599 case OPT_iwithprefixbefore:
1600 /* Add directory to main path for includes,
1601 with the default prefix at the front of its name. */
1608 if (CPP_OPTION (pfile, include_prefix) != 0)
1610 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1611 fname = xmalloc (ipl + len + 1);
1612 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1613 memcpy (fname + ipl, arg, len + 1);
1615 else if (cpp_GCC_INCLUDE_DIR_len)
1617 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1618 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1619 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1622 fname = xstrdup (arg);
1624 append_include_chain (pfile, fname,
1625 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1629 /* Add directory to end of path for includes. */
1630 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1633 /* Silently ignore unrecognised options. */
1634 if (!strcmp (argv[i], "-Wall"))
1636 CPP_OPTION (pfile, warn_trigraphs) = 1;
1637 CPP_OPTION (pfile, warn_comments) = 1;
1639 else if (!strcmp (argv[i], "-Wtraditional"))
1640 CPP_OPTION (pfile, warn_traditional) = 1;
1641 else if (!strcmp (argv[i], "-Wtrigraphs"))
1642 CPP_OPTION (pfile, warn_trigraphs) = 1;
1643 else if (!strcmp (argv[i], "-Wcomment"))
1644 CPP_OPTION (pfile, warn_comments) = 1;
1645 else if (!strcmp (argv[i], "-Wcomments"))
1646 CPP_OPTION (pfile, warn_comments) = 1;
1647 else if (!strcmp (argv[i], "-Wundef"))
1648 CPP_OPTION (pfile, warn_undef) = 1;
1649 else if (!strcmp (argv[i], "-Wimport"))
1650 CPP_OPTION (pfile, warn_import) = 1;
1651 else if (!strcmp (argv[i], "-Werror"))
1652 CPP_OPTION (pfile, warnings_are_errors) = 1;
1653 else if (!strcmp (argv[i], "-Wsystem-headers"))
1654 CPP_OPTION (pfile, warn_system_headers) = 1;
1655 else if (!strcmp (argv[i], "-Wno-traditional"))
1656 CPP_OPTION (pfile, warn_traditional) = 0;
1657 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1658 CPP_OPTION (pfile, warn_trigraphs) = 0;
1659 else if (!strcmp (argv[i], "-Wno-comment"))
1660 CPP_OPTION (pfile, warn_comments) = 0;
1661 else if (!strcmp (argv[i], "-Wno-comments"))
1662 CPP_OPTION (pfile, warn_comments) = 0;
1663 else if (!strcmp (argv[i], "-Wno-undef"))
1664 CPP_OPTION (pfile, warn_undef) = 0;
1665 else if (!strcmp (argv[i], "-Wno-import"))
1666 CPP_OPTION (pfile, warn_import) = 0;
1667 else if (!strcmp (argv[i], "-Wno-error"))
1668 CPP_OPTION (pfile, warnings_are_errors) = 0;
1669 else if (!strcmp (argv[i], "-Wno-system-headers"))
1670 CPP_OPTION (pfile, warn_system_headers) = 0;
1679 opt_comp (const void *p1, const void *p2)
1681 return strcmp (((struct cl_option *)p1)->opt_text,
1682 ((struct cl_option *)p2)->opt_text);
1686 /* Handle command-line options in (argc, argv).
1687 Can be called multiple times, to handle multiple sets of options.
1688 Returns if an unrecognized option is seen.
1689 Returns number of strings consumed. */
1691 cpp_handle_options (pfile, argc, argv)
1697 int strings_processed;
1699 for (i = 0; i < argc; i += strings_processed)
1701 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1702 if (strings_processed == 0)
1711 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1712 /* To keep the lines from getting too long for some compilers, limit
1713 to about 500 characters (6 lines) per chunk. */
1716 -include <file> Include the contents of <file> before other files\n\
1717 -imacros <file> Accept definition of macros in <file>\n\
1718 -iprefix <path> Specify <path> as a prefix for next two options\n\
1719 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1720 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1721 -isystem <dir> Add <dir> to the start of the system include path\n\
1724 -idirafter <dir> Add <dir> to the end of the system include path\n\
1725 -I <dir> Add <dir> to the end of the main include path\n\
1726 -I- Fine-grained include path control; see info docs\n\
1727 -nostdinc Do not search system include directories\n\
1728 (dirs specified with -isystem will still be used)\n\
1729 -nostdinc++ Do not search system include directories for C++\n\
1730 -o <file> Put output into <file>\n\
1733 -pedantic Issue all warnings demanded by strict ISO C\n\
1734 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1735 -trigraphs Support ISO C trigraphs\n\
1736 -lang-c Assume that the input sources are in C\n\
1737 -lang-c89 Assume that the input sources are in C89\n\
1740 -lang-c++ Assume that the input sources are in C++\n\
1741 -lang-objc Assume that the input sources are in ObjectiveC\n\
1742 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1743 -lang-asm Assume that the input sources are in assembler\n\
1746 -std=<std name> Specify the conformance standard; one of:\n\
1747 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1748 iso9899:199409, iso9899:1999\n\
1749 -+ Allow parsing of C++ style features\n\
1750 -w Inhibit warning messages\n\
1751 -Wtrigraphs Warn if trigraphs are encountered\n\
1752 -Wno-trigraphs Do not warn about trigraphs\n\
1753 -Wcomment{s} Warn if one comment starts inside another\n\
1756 -Wno-comment{s} Do not warn about comments\n\
1757 -Wtraditional Warn about features not present in traditional C\n\
1758 -Wno-traditional Do not warn about traditional C\n\
1759 -Wundef Warn if an undefined macro is used by #if\n\
1760 -Wno-undef Do not warn about testing undefined macros\n\
1761 -Wimport Warn about the use of the #import directive\n\
1764 -Wno-import Do not warn about the use of #import\n\
1765 -Werror Treat all warnings as errors\n\
1766 -Wno-error Do not treat warnings as errors\n\
1767 -Wsystem-headers Do not suppress warnings from system headers\n\
1768 -Wno-system-headers Suppress warnings from system headers\n\
1769 -Wall Enable all preprocessor warnings\n\
1772 -M Generate make dependencies\n\
1773 -MM As -M, but ignore system header files\n\
1774 -MD As -M, but put output in a .d file\n\
1775 -MMD As -MD, but ignore system header files\n\
1776 -MG Treat missing header file as generated files\n\
1777 -g3 Include #define and #undef directives in the output\n\
1780 -D<macro> Define a <macro> with string '1' as its value\n\
1781 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1782 -A<question> (<answer>) Assert the <answer> to <question>\n\
1783 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1784 -U<macro> Undefine <macro> \n\
1785 -v Display the version number\n\
1788 -H Print the name of header files as they are used\n\
1789 -C Do not discard comments\n\
1790 -dM Display a list of macro definitions active at end\n\
1791 -dD Preserve macro definitions in output\n\
1792 -dN As -dD except that only the names are preserved\n\
1793 -dI Include #include directives in the output\n\
1796 -ftabstop=<number> Distance between tab stops for column reporting\n\
1797 -P Do not generate #line directives\n\
1798 -$ Do not allow '$' in identifiers\n\
1799 -remap Remap file names when including files.\n\
1800 --version Display version information\n\
1801 -h or --help Display this information\n\