2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001 Free Software Foundation, Inc.
4 Contributed by Per Bothner, 1994-95.
5 Based on CCCP program by Paul Rubin, June 1986
6 Adapted to ANSI C, Richard Stallman, Jan 1987
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 #include "cppdefault.h"
33 /* Predefined symbols, built-in macros, and the default include path. */
35 #ifndef GET_ENV_PATH_LIST
36 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
39 /* Windows does not natively support inodes, and neither does MSDOS.
40 Cygwin's emulation can generate non-unique inodes, so don't use it.
41 VMS has non-numeric inodes. */
43 #define INO_T_EQ(a, b) (!memcmp (&(a), &(b), sizeof (a)))
44 #elif (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
45 #define INO_T_EQ(a, b) 0
47 #define INO_T_EQ(a, b) ((a) == (b))
50 /* Internal structures and prototypes. */
52 /* A `struct pending_option' remembers one -D, -A, -U, -include, or
55 typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
58 struct pending_option *next;
60 cl_directive_handler handler;
63 /* The `pending' structure accumulates all the options that are not
64 actually processed until we hit cpp_start_read. It consists of
65 several lists, one for each type of option. We keep both head and
66 tail pointers for quick insertion. */
69 struct pending_option *directive_head, *directive_tail;
71 struct file_name_list *quote_head, *quote_tail;
72 struct file_name_list *brack_head, *brack_tail;
73 struct file_name_list *systm_head, *systm_tail;
74 struct file_name_list *after_head, *after_tail;
76 struct pending_option *imacros_head, *imacros_tail;
77 struct pending_option *include_head, *include_tail;
81 #define APPEND(pend, list, elt) \
82 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
83 else (pend)->list##_tail->next = (elt); \
84 (pend)->list##_tail = (elt); \
87 #define APPEND(pend, list, elt) \
88 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
89 else (pend)->list/**/_tail->next = (elt); \
90 (pend)->list/**/_tail = (elt); \
94 static void print_help PARAMS ((void));
95 static void path_include PARAMS ((cpp_reader *,
97 static void 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 /* Argument pool initially 8K. Aligned, temporary pool. */
517 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
519 /* Macro pool initially 8K. Aligned, permanent pool. */
520 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
522 _cpp_init_hashtable (pfile);
523 _cpp_init_stacks (pfile);
524 _cpp_init_includes (pfile);
525 _cpp_init_internal_pragmas (pfile);
527 /* Initialize the special nodes. */
528 s = &pfile->spec_nodes;
529 s->n_L = cpp_lookup (pfile, DSC("L"));
530 s->n_defined = cpp_lookup (pfile, DSC("defined"));
531 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
532 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
533 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
534 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
535 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
540 /* Free resources used by PFILE.
541 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
546 struct file_name_list *dir, *dirn;
547 cpp_context *context, *contextn;
549 while (CPP_BUFFER (pfile) != NULL)
550 cpp_pop_buffer (pfile);
552 if (pfile->macro_buffer)
553 free ((PTR) pfile->macro_buffer);
556 deps_free (pfile->deps);
558 _cpp_cleanup_includes (pfile);
559 _cpp_cleanup_stacks (pfile);
560 _cpp_cleanup_hashtable (pfile);
562 _cpp_free_lookaheads (pfile);
564 _cpp_free_pool (&pfile->ident_pool);
565 _cpp_free_pool (&pfile->macro_pool);
566 _cpp_free_pool (&pfile->argument_pool);
568 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
575 for (context = pfile->base_context.next; context; context = contextn)
577 contextn = context->next;
583 /* This structure defines one built-in identifier. A node will be
584 entered in the hash table under the name NAME, with value VALUE (if
585 any). If flags has OPERATOR, the node's operator field is used; if
586 flags has BUILTIN the node's builtin field is used.
588 Two values are not compile time constants, so we tag
589 them in the FLAGS field instead:
590 VERS value is the global version_string, quoted
591 ULP value is the global user_label_prefix
593 Also, macros with CPLUS set in the flags field are entered only for C++. */
599 unsigned char builtin;
600 unsigned char operator;
601 unsigned short flags;
608 #define OPERATOR 0x10
610 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
611 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
612 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
613 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
614 static const struct builtin builtin_array[] =
616 B("__TIME__", BT_TIME),
617 B("__DATE__", BT_DATE),
618 B("__FILE__", BT_FILE),
619 B("__BASE_FILE__", BT_BASE_FILE),
620 B("__LINE__", BT_SPECLINE),
621 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
622 B("__STDC__", BT_STDC),
624 X("__VERSION__", VERS),
625 X("__USER_LABEL_PREFIX__", ULP),
626 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
627 C("__HAVE_BUILTIN_SETJMP__", "1"),
628 #ifndef NO_BUILTIN_SIZE_TYPE
629 C("__SIZE_TYPE__", SIZE_TYPE),
631 #ifndef NO_BUILTIN_PTRDIFF_TYPE
632 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
634 #ifndef NO_BUILTIN_WCHAR_TYPE
635 C("__WCHAR_TYPE__", WCHAR_TYPE),
637 #ifndef NO_BUILTIN_WINT_TYPE
638 C("__WINT_TYPE__", WINT_TYPE),
641 /* Named operators known to the preprocessor. These cannot be #defined
642 and always have their stated meaning. They are treated like normal
643 identifiers except for the type code and the meaning. Most of them
644 are only for C++ (but see iso646.h). */
645 O("and", CPP_AND_AND, CPLUS),
646 O("and_eq", CPP_AND_EQ, CPLUS),
647 O("bitand", CPP_AND, CPLUS),
648 O("bitor", CPP_OR, CPLUS),
649 O("compl", CPP_COMPL, CPLUS),
650 O("not", CPP_NOT, CPLUS),
651 O("not_eq", CPP_NOT_EQ, CPLUS),
652 O("or", CPP_OR_OR, CPLUS),
653 O("or_eq", CPP_OR_EQ, CPLUS),
654 O("xor", CPP_XOR, CPLUS),
655 O("xor_eq", CPP_XOR_EQ, CPLUS)
661 #define builtin_array_end \
662 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
664 /* Subroutine of cpp_start_read; reads the builtins table above and
665 enters the macros into the hash table. */
667 initialize_builtins (pfile)
670 const struct builtin *b;
672 for(b = builtin_array; b < builtin_array_end; b++)
674 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
677 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
680 if (b->flags & (OPERATOR | BUILTIN))
682 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
683 if (b->flags & OPERATOR)
685 hp->flags |= NODE_OPERATOR;
686 hp->value.operator = b->operator;
691 hp->flags |= NODE_BUILTIN;
692 hp->value.builtin = b->builtin;
695 else /* A standard macro of some kind. */
702 /* Allocate enough space for 'name "value"\n\0'. */
703 str = alloca (b->len + strlen (version_string) + 5);
704 sprintf (str, "%s \"%s\"\n", b->name, version_string);
709 val = CPP_OPTION (pfile, user_label_prefix);
713 /* Allocate enough space for "name value\n\0". */
714 str = alloca (b->len + strlen (val) + 3);
715 sprintf(str, "%s %s\n", b->name, val);
718 _cpp_define_builtin (pfile, str);
727 #undef builtin_array_end
729 /* Another subroutine of cpp_start_read. This one sets up to do
730 dependency-file output. */
732 initialize_dependency_output (pfile)
735 char *spec, *s, *output_file;
737 /* Either of two environment variables can specify output of deps.
738 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
739 where OUTPUT_FILE is the file to write deps info to
740 and DEPS_TARGET is the target to mention in the deps. */
742 if (CPP_OPTION (pfile, print_deps) == 0)
744 spec = getenv ("DEPENDENCIES_OUTPUT");
746 CPP_OPTION (pfile, print_deps) = 1;
749 spec = getenv ("SUNPRO_DEPENDENCIES");
751 CPP_OPTION (pfile, print_deps) = 2;
757 pfile->deps = deps_init ();
759 /* Find the space before the DEPS_TARGET, if there is one. */
760 s = strchr (spec, ' ');
763 /* Let the caller perform MAKE quoting. */
764 deps_add_target (pfile->deps, s + 1, 0);
765 output_file = (char *) xmalloc (s - spec + 1);
766 memcpy (output_file, spec, s - spec);
767 output_file[s - spec] = 0;
772 CPP_OPTION (pfile, deps_file) = output_file;
773 CPP_OPTION (pfile, print_deps_append) = 1;
776 /* Set the default target (if there is none already). */
777 deps_add_default_target (pfile->deps, CPP_OPTION (pfile, in_fname));
779 if (CPP_OPTION (pfile, in_fname))
780 deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
783 /* And another subroutine. This one sets up the standard include path. */
785 initialize_standard_includes (pfile)
789 const struct default_include *p;
790 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
792 /* Several environment variables may add to the include search path.
793 CPATH specifies an additional list of directories to be searched
794 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
795 etc. specify an additional list of directories to be searched as
796 if specified with -isystem, for the language indicated. */
798 GET_ENV_PATH_LIST (path, "CPATH");
799 if (path != 0 && *path != 0)
800 path_include (pfile, path, BRACKET);
802 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
805 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
808 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
811 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
814 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
817 if (path != 0 && *path != 0)
818 path_include (pfile, path, SYSTEM);
820 /* Search "translated" versions of GNU directories.
821 These have /usr/local/lib/gcc... replaced by specd_prefix. */
822 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
824 /* Remove the `include' from /usr/local/lib/gcc.../include.
825 GCC_INCLUDE_DIR will always end in /include. */
826 int default_len = cpp_GCC_INCLUDE_DIR_len;
827 char *default_prefix = (char *) alloca (default_len + 1);
828 int specd_len = strlen (specd_prefix);
830 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
831 default_prefix[default_len] = '\0';
833 for (p = cpp_include_defaults; p->fname; p++)
835 /* Some standard dirs are only for C++. */
837 || (CPP_OPTION (pfile, cplusplus)
838 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
840 /* Does this dir start with the prefix? */
841 if (!memcmp (p->fname, default_prefix, default_len))
843 /* Yes; change prefix and add to search list. */
844 int flen = strlen (p->fname);
845 int this_len = specd_len + flen - default_len;
846 char *str = (char *) xmalloc (this_len + 1);
847 memcpy (str, specd_prefix, specd_len);
848 memcpy (str + specd_len,
849 p->fname + default_len,
850 flen - default_len + 1);
852 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
858 /* Search ordinary names for GNU include directories. */
859 for (p = cpp_include_defaults; p->fname; p++)
861 /* Some standard dirs are only for C++. */
863 || (CPP_OPTION (pfile, cplusplus)
864 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
866 char *str = xstrdup (update_path (p->fname, p->component));
867 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
872 /* Handles -imacro and -include from the command line. */
874 do_includes (pfile, p, scan)
876 struct pending_option *p;
881 struct pending_option *q;
883 /* Later: maybe update this to use the #include "" search path
884 if cpp_read_file fails. */
885 if (_cpp_read_file (pfile, p->arg) && scan)
886 cpp_scan_buffer_nooutput (pfile, 0);
893 /* This is called after options have been processed. Check options
894 for consistency, and setup for processing input from the file named
895 FNAME. (Use standard input if FNAME == NULL.) Return 1 on success,
899 cpp_start_read (pfile, fname)
903 struct pending_option *p, *q;
905 /* -MG doesn't select the form of output and must be specified with one of
906 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
907 inhibit compilation. */
908 if (CPP_OPTION (pfile, print_deps_missing_files)
909 && (CPP_OPTION (pfile, print_deps) == 0
910 || !CPP_OPTION (pfile, no_output)))
912 cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
916 /* -Wtraditional is not useful in C++ mode. */
917 if (CPP_OPTION (pfile, cplusplus))
918 CPP_OPTION (pfile, warn_traditional) = 0;
920 /* Set this if it hasn't been set already. */
921 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
922 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
924 /* Set up the include search path now. */
925 if (! CPP_OPTION (pfile, no_standard_includes))
926 initialize_standard_includes (pfile);
928 merge_include_chains (pfile);
930 /* With -v, print the list of dirs to search. */
931 if (CPP_OPTION (pfile, verbose))
933 struct file_name_list *l;
934 fprintf (stderr, _("#include \"...\" search starts here:\n"));
935 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
937 if (l == CPP_OPTION (pfile, bracket_include))
938 fprintf (stderr, _("#include <...> search starts here:\n"));
939 fprintf (stderr, " %s\n", l->name);
941 fprintf (stderr, _("End of search list.\n"));
944 /* Open the main input file. This must be done early, so we have a
945 buffer to stand on. */
946 if (CPP_OPTION (pfile, in_fname) == NULL
947 || *CPP_OPTION (pfile, in_fname) == 0)
949 CPP_OPTION (pfile, in_fname) = fname;
950 if (CPP_OPTION (pfile, in_fname) == NULL)
951 CPP_OPTION (pfile, in_fname) = "";
953 if (CPP_OPTION (pfile, out_fname) == NULL)
954 CPP_OPTION (pfile, out_fname) = "";
956 if (!_cpp_read_file (pfile, fname))
959 initialize_dependency_output (pfile);
961 /* Install __LINE__, etc. */
962 initialize_builtins (pfile);
964 /* Do -U's, -D's and -A's in the order they were seen. */
965 p = CPP_OPTION (pfile, pending)->directive_head;
968 (*p->handler) (pfile, p->arg);
973 pfile->done_initializing = 1;
975 /* The -imacros files can be scanned now, but the -include files
976 have to be pushed onto the buffer stack and processed later,
977 otherwise cppmain.c won't see the tokens. include_head was built
978 up as a stack, and popping this stack onto the buffer stack means
979 we preserve the order of the command line. */
980 do_includes (pfile, CPP_OPTION (pfile, pending)->imacros_head, 1);
981 do_includes (pfile, CPP_OPTION (pfile, pending)->include_head, 0);
983 free (CPP_OPTION (pfile, pending));
984 CPP_OPTION (pfile, pending) = NULL;
989 /* This is called at the end of preprocessing. It pops the
990 last buffer and writes dependency output. It should also
991 clear macro definitions, such that you could call cpp_start_read
992 with a new filename to restart processing. */
997 if (CPP_BUFFER (pfile))
999 cpp_ice (pfile, "buffers still stacked in cpp_finish");
1000 while (CPP_BUFFER (pfile))
1001 cpp_pop_buffer (pfile);
1004 /* Don't write the deps file if preprocessing has failed. */
1005 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1007 /* Stream on which to print the dependency information. */
1008 FILE *deps_stream = 0;
1009 const char *deps_mode
1010 = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
1011 if (CPP_OPTION (pfile, deps_file) == 0)
1012 deps_stream = stdout;
1015 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
1016 if (deps_stream == 0)
1017 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
1021 deps_write (pfile->deps, deps_stream, 72);
1023 if (CPP_OPTION (pfile, deps_phony_targets))
1024 deps_phony_targets (pfile->deps, deps_stream);
1026 if (CPP_OPTION (pfile, deps_file))
1028 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1029 cpp_fatal (pfile, "I/O error on output");
1034 /* Report on headers that could use multiple include guards. */
1035 if (CPP_OPTION (pfile, print_include_names))
1036 _cpp_report_missing_guards (pfile);
1040 new_pending_directive (pend, text, handler)
1041 struct cpp_pending *pend;
1043 cl_directive_handler handler;
1045 struct pending_option *o = (struct pending_option *)
1046 xmalloc (sizeof (struct pending_option));
1050 o->handler = handler;
1051 APPEND (pend, directive, o);
1054 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1055 I.e. a const string initializer with parens around it. That is
1056 what N_("string") resolves to, so we make no_* be macros instead. */
1057 #define no_arg N_("Argument missing after %s")
1058 #define no_ass N_("Assertion missing after %s")
1059 #define no_dir N_("Directory name missing after %s")
1060 #define no_fil N_("File name missing after %s")
1061 #define no_mac N_("Macro name missing after %s")
1062 #define no_pth N_("Path name missing after %s")
1063 #define no_num N_("Number missing after %s")
1064 #define no_tgt N_("Target missing after %s")
1066 /* This is the list of all command line options, with the leading
1067 "-" removed. It must be sorted in ASCII collating order. */
1068 #define COMMAND_LINE_OPTIONS \
1069 DEF_OPT("", 0, OPT_stdin_stdout) \
1070 DEF_OPT("$", 0, OPT_dollar) \
1071 DEF_OPT("+", 0, OPT_plus) \
1072 DEF_OPT("-help", 0, OPT__help) \
1073 DEF_OPT("-target-help", 0, OPT_target__help) \
1074 DEF_OPT("-version", 0, OPT__version) \
1075 DEF_OPT("A", no_ass, OPT_A) \
1076 DEF_OPT("C", 0, OPT_C) \
1077 DEF_OPT("D", no_mac, OPT_D) \
1078 DEF_OPT("H", 0, OPT_H) \
1079 DEF_OPT("I", no_dir, OPT_I) \
1080 DEF_OPT("M", 0, OPT_M) \
1081 DEF_OPT("MD", no_fil, OPT_MD) \
1082 DEF_OPT("MG", 0, OPT_MG) \
1083 DEF_OPT("MM", 0, OPT_MM) \
1084 DEF_OPT("MMD", no_fil, OPT_MMD) \
1085 DEF_OPT("MP", 0, OPT_MP) \
1086 DEF_OPT("MT", no_tgt, OPT_MT) \
1087 DEF_OPT("P", 0, OPT_P) \
1088 DEF_OPT("U", no_mac, OPT_U) \
1089 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1090 DEF_OPT("d", no_arg, OPT_d) \
1091 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1092 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1093 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
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_fno_operator_names:
1291 CPP_OPTION (pfile, operator_names) = 0;
1293 case OPT_fpreprocessed:
1294 CPP_OPTION (pfile, preprocessed) = 1;
1296 case OPT_fno_preprocessed:
1297 CPP_OPTION (pfile, preprocessed) = 0;
1299 case OPT_fshow_column:
1300 CPP_OPTION (pfile, show_column) = 1;
1302 case OPT_fno_show_column:
1303 CPP_OPTION (pfile, show_column) = 0;
1306 /* Silently ignore empty string, non-longs and silly values. */
1310 long tabstop = strtol (arg, &endptr, 10);
1311 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1312 CPP_OPTION (pfile, tabstop) = tabstop;
1316 CPP_OPTION (pfile, inhibit_warnings) = 1;
1318 case OPT_g: /* Silently ignore anything but -g3. */
1319 if (!strcmp(&argv[i][2], "3"))
1320 CPP_OPTION (pfile, debug_output) = 1;
1327 case OPT_target__help:
1328 /* Print if any target specific options. */
1332 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1336 CPP_OPTION (pfile, discard_comments) = 0;
1339 CPP_OPTION (pfile, no_line_commands) = 1;
1341 case OPT_dollar: /* Don't include $ in identifiers. */
1342 CPP_OPTION (pfile, dollars_in_ident) = 0;
1345 CPP_OPTION (pfile, print_include_names) = 1;
1348 new_pending_directive (pend, arg, cpp_define);
1350 case OPT_pedantic_errors:
1351 CPP_OPTION (pfile, pedantic_errors) = 1;
1354 CPP_OPTION (pfile, pedantic) = 1;
1357 CPP_OPTION (pfile, trigraphs) = 1;
1360 CPP_OPTION (pfile, cplusplus) = 1;
1361 CPP_OPTION (pfile, cplusplus_comments) = 1;
1364 CPP_OPTION (pfile, remap) = 1;
1367 CPP_OPTION (pfile, include_prefix) = arg;
1368 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1371 set_lang (pfile, CLK_GNUC89);
1373 case OPT_lang_cplusplus:
1374 set_lang (pfile, CLK_GNUCXX);
1377 set_lang (pfile, CLK_OBJC);
1379 case OPT_lang_objcplusplus:
1380 set_lang (pfile, CLK_OBJCXX);
1383 set_lang (pfile, CLK_ASM);
1385 case OPT_std_cplusplus98:
1386 set_lang (pfile, CLK_CXX98);
1389 set_lang (pfile, CLK_GNUC89);
1393 set_lang (pfile, CLK_GNUC99);
1395 case OPT_std_iso9899_199409:
1396 set_lang (pfile, CLK_STDC94);
1398 case OPT_std_iso9899_1990:
1401 set_lang (pfile, CLK_STDC89);
1403 case OPT_std_iso9899_199x:
1404 case OPT_std_iso9899_1999:
1407 set_lang (pfile, CLK_STDC99);
1410 /* -nostdinc causes no default include directories.
1411 You must specify all include-file directories with -I. */
1412 CPP_OPTION (pfile, no_standard_includes) = 1;
1414 case OPT_nostdincplusplus:
1415 /* -nostdinc++ causes no default C++-specific include directories. */
1416 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1419 if (CPP_OPTION (pfile, out_fname) != NULL)
1421 cpp_fatal (pfile, "Output filename specified twice");
1424 CPP_OPTION (pfile, out_fname) = arg;
1425 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1426 CPP_OPTION (pfile, out_fname) = "";
1429 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1430 #ifdef TARGET_VERSION
1433 fputc ('\n', stderr);
1434 CPP_OPTION (pfile, verbose) = 1;
1436 case OPT_stdin_stdout:
1437 /* JF handle '-' as file name meaning stdin or stdout. */
1438 if (CPP_OPTION (pfile, in_fname) == NULL)
1439 CPP_OPTION (pfile, in_fname) = "";
1440 else if (CPP_OPTION (pfile, out_fname) == NULL)
1441 CPP_OPTION (pfile, out_fname) = "";
1444 /* Args to -d specify what parts of macros to dump.
1445 Silently ignore unrecognised options; they may
1446 be aimed at the compiler proper. */
1450 while ((c = *arg++) != '\0')
1454 CPP_OPTION (pfile, dump_macros) = dump_only;
1455 CPP_OPTION (pfile, no_output) = 1;
1458 CPP_OPTION (pfile, dump_macros) = dump_names;
1461 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1464 CPP_OPTION (pfile, dump_includes) = 1;
1469 /* The style of the choices here is a bit mixed.
1470 The chosen scheme is a hybrid of keeping all options in one string
1471 and specifying each option in a separate argument:
1472 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1473 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1474 -M[M][G][D file]. This is awkward to handle in specs, and is not
1476 /* ??? -MG must be specified in addition to one of -M or -MM.
1477 This can be relaxed in the future without breaking anything.
1478 The converse isn't true. */
1480 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1482 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1489 pfile->deps = deps_init ();
1491 if (opt_code == OPT_M || opt_code == OPT_MD)
1492 CPP_OPTION (pfile, print_deps) = 2;
1494 CPP_OPTION (pfile, print_deps) = 1;
1496 /* For -MD and -MMD, write deps on file named by next arg. */
1497 /* For -M and -MM, write deps on standard output and
1498 suppress the usual output. */
1499 if (opt_code == OPT_MD || opt_code == OPT_MMD)
1500 CPP_OPTION (pfile, deps_file) = arg;
1502 CPP_OPTION (pfile, no_output) = 1;
1506 CPP_OPTION (pfile, deps_phony_targets) = 1;
1512 pfile->deps = deps_init ();
1513 deps_add_target (pfile->deps, arg, 0);
1519 /* -A with an argument beginning with '-' acts as
1520 #unassert on whatever immediately follows the '-'.
1521 If "-" is the whole argument, we eliminate all
1522 predefined macros and assertions, including those
1523 that were specified earlier on the command line.
1524 That way we can get rid of any that were passed
1525 automatically in from GCC. */
1529 struct pending_option *o1, *o2;
1531 o1 = pend->directive_head;
1538 pend->directive_head = NULL;
1539 pend->directive_tail = NULL;
1542 new_pending_directive (pend, arg + 1, cpp_unassert);
1545 new_pending_directive (pend, arg, cpp_assert);
1548 new_pending_directive (pend, arg, cpp_undef);
1550 case OPT_I: /* Add directory to path for includes. */
1551 if (!strcmp (arg, "-"))
1554 Use the preceding -I directories for #include "..."
1555 but not #include <...>.
1556 Don't search the directory of the present file
1557 for #include "...". (Note that -I. -I- is not the same as
1558 the default setup; -I. uses the compiler's working dir.) */
1559 if (! CPP_OPTION (pfile, ignore_srcdir))
1561 pend->quote_head = pend->brack_head;
1562 pend->quote_tail = pend->brack_tail;
1563 pend->brack_head = 0;
1564 pend->brack_tail = 0;
1565 CPP_OPTION (pfile, ignore_srcdir) = 1;
1569 cpp_fatal (pfile, "-I- specified twice");
1574 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1577 /* Add directory to beginning of system include path, as a system
1578 include directory. */
1579 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1583 struct pending_option *o = (struct pending_option *)
1584 xmalloc (sizeof (struct pending_option));
1587 /* This list has to be built in reverse order so that
1588 when cpp_start_read pushes all the -include files onto
1589 the buffer stack, they will be scanned in forward order. */
1590 o->next = pend->include_head;
1591 pend->include_head = o;
1596 struct pending_option *o = (struct pending_option *)
1597 xmalloc (sizeof (struct pending_option));
1601 APPEND (pend, imacros, o);
1604 case OPT_iwithprefix:
1605 /* Add directory to end of path for includes,
1606 with the default prefix at the front of its name. */
1608 case OPT_iwithprefixbefore:
1609 /* Add directory to main path for includes,
1610 with the default prefix at the front of its name. */
1617 if (CPP_OPTION (pfile, include_prefix) != 0)
1619 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1620 fname = xmalloc (ipl + len + 1);
1621 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1622 memcpy (fname + ipl, arg, len + 1);
1624 else if (cpp_GCC_INCLUDE_DIR_len)
1626 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1627 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1628 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1631 fname = xstrdup (arg);
1633 append_include_chain (pfile, fname,
1634 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1638 /* Add directory to end of path for includes. */
1639 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1642 /* Silently ignore unrecognised options. */
1643 if (!strcmp (argv[i], "-Wall"))
1645 CPP_OPTION (pfile, warn_trigraphs) = 1;
1646 CPP_OPTION (pfile, warn_comments) = 1;
1648 else if (!strcmp (argv[i], "-Wtraditional"))
1649 CPP_OPTION (pfile, warn_traditional) = 1;
1650 else if (!strcmp (argv[i], "-Wtrigraphs"))
1651 CPP_OPTION (pfile, warn_trigraphs) = 1;
1652 else if (!strcmp (argv[i], "-Wcomment"))
1653 CPP_OPTION (pfile, warn_comments) = 1;
1654 else if (!strcmp (argv[i], "-Wcomments"))
1655 CPP_OPTION (pfile, warn_comments) = 1;
1656 else if (!strcmp (argv[i], "-Wundef"))
1657 CPP_OPTION (pfile, warn_undef) = 1;
1658 else if (!strcmp (argv[i], "-Wimport"))
1659 CPP_OPTION (pfile, warn_import) = 1;
1660 else if (!strcmp (argv[i], "-Werror"))
1661 CPP_OPTION (pfile, warnings_are_errors) = 1;
1662 else if (!strcmp (argv[i], "-Wsystem-headers"))
1663 CPP_OPTION (pfile, warn_system_headers) = 1;
1664 else if (!strcmp (argv[i], "-Wno-traditional"))
1665 CPP_OPTION (pfile, warn_traditional) = 0;
1666 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1667 CPP_OPTION (pfile, warn_trigraphs) = 0;
1668 else if (!strcmp (argv[i], "-Wno-comment"))
1669 CPP_OPTION (pfile, warn_comments) = 0;
1670 else if (!strcmp (argv[i], "-Wno-comments"))
1671 CPP_OPTION (pfile, warn_comments) = 0;
1672 else if (!strcmp (argv[i], "-Wno-undef"))
1673 CPP_OPTION (pfile, warn_undef) = 0;
1674 else if (!strcmp (argv[i], "-Wno-import"))
1675 CPP_OPTION (pfile, warn_import) = 0;
1676 else if (!strcmp (argv[i], "-Wno-error"))
1677 CPP_OPTION (pfile, warnings_are_errors) = 0;
1678 else if (!strcmp (argv[i], "-Wno-system-headers"))
1679 CPP_OPTION (pfile, warn_system_headers) = 0;
1688 opt_comp (const void *p1, const void *p2)
1690 return strcmp (((struct cl_option *)p1)->opt_text,
1691 ((struct cl_option *)p2)->opt_text);
1695 /* Handle command-line options in (argc, argv).
1696 Can be called multiple times, to handle multiple sets of options.
1697 Returns if an unrecognized option is seen.
1698 Returns number of strings consumed. */
1700 cpp_handle_options (pfile, argc, argv)
1706 int strings_processed;
1708 for (i = 0; i < argc; i += strings_processed)
1710 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1711 if (strings_processed == 0)
1720 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1721 /* To keep the lines from getting too long for some compilers, limit
1722 to about 500 characters (6 lines) per chunk. */
1725 -include <file> Include the contents of <file> before other files\n\
1726 -imacros <file> Accept definition of macros in <file>\n\
1727 -iprefix <path> Specify <path> as a prefix for next two options\n\
1728 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1729 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1730 -isystem <dir> Add <dir> to the start of the system include path\n\
1733 -idirafter <dir> Add <dir> to the end of the system include path\n\
1734 -I <dir> Add <dir> to the end of the main include path\n\
1735 -I- Fine-grained include path control; see info docs\n\
1736 -nostdinc Do not search system include directories\n\
1737 (dirs specified with -isystem will still be used)\n\
1738 -nostdinc++ Do not search system include directories for C++\n\
1739 -o <file> Put output into <file>\n\
1742 -pedantic Issue all warnings demanded by strict ISO C\n\
1743 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1744 -trigraphs Support ISO C trigraphs\n\
1745 -lang-c Assume that the input sources are in C\n\
1746 -lang-c89 Assume that the input sources are in C89\n\
1749 -lang-c++ Assume that the input sources are in C++\n\
1750 -lang-objc Assume that the input sources are in ObjectiveC\n\
1751 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1752 -lang-asm Assume that the input sources are in assembler\n\
1755 -std=<std name> Specify the conformance standard; one of:\n\
1756 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1757 iso9899:199409, iso9899:1999\n\
1758 -+ Allow parsing of C++ style features\n\
1759 -w Inhibit warning messages\n\
1760 -Wtrigraphs Warn if trigraphs are encountered\n\
1761 -Wno-trigraphs Do not warn about trigraphs\n\
1762 -Wcomment{s} Warn if one comment starts inside another\n\
1765 -Wno-comment{s} Do not warn about comments\n\
1766 -Wtraditional Warn about features not present in traditional C\n\
1767 -Wno-traditional Do not warn about traditional C\n\
1768 -Wundef Warn if an undefined macro is used by #if\n\
1769 -Wno-undef Do not warn about testing undefined macros\n\
1770 -Wimport Warn about the use of the #import directive\n\
1773 -Wno-import Do not warn about the use of #import\n\
1774 -Werror Treat all warnings as errors\n\
1775 -Wno-error Do not treat warnings as errors\n\
1776 -Wsystem-headers Do not suppress warnings from system headers\n\
1777 -Wno-system-headers Suppress warnings from system headers\n\
1778 -Wall Enable all preprocessor warnings\n\
1781 -M Generate make dependencies\n\
1782 -MM As -M, but ignore system header files\n\
1783 -MD As -M, but put output in a .d file\n\
1784 -MMD As -MD, but ignore system header files\n\
1785 -MG Treat missing header file as generated files\n\
1786 -g3 Include #define and #undef directives in the output\n\
1789 -D<macro> Define a <macro> with string '1' as its value\n\
1790 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1791 -A<question> (<answer>) Assert the <answer> to <question>\n\
1792 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1793 -U<macro> Undefine <macro> \n\
1794 -v Display the version number\n\
1797 -H Print the name of header files as they are used\n\
1798 -C Do not discard comments\n\
1799 -dM Display a list of macro definitions active at end\n\
1800 -dD Preserve macro definitions in output\n\
1801 -dN As -dD except that only the names are preserved\n\
1802 -dI Include #include directives in the output\n\
1805 -ftabstop=<number> Distance between tab stops for column reporting\n\
1806 -P Do not generate #line directives\n\
1807 -$ Do not allow '$' in identifiers\n\
1808 -remap Remap file names when including files.\n\
1809 --version Display version information\n\
1810 -h or --help Display this information\n\