2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001 Free Software Foundation, Inc.
4 Contributed by Per Bothner, 1994-95.
5 Based on CCCP program by Paul Rubin, June 1986
6 Adapted to ANSI C, Richard Stallman, Jan 1987
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 #include "cppdefault.h"
33 /* Predefined symbols, built-in macros, and the default include path. */
35 #ifndef GET_ENV_PATH_LIST
36 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
39 /* Windows does not natively support inodes, and neither does MSDOS.
40 Cygwin's emulation can generate non-unique inodes, so don't use it.
41 VMS has non-numeric inodes. */
43 # define INO_T_EQ(a, b) (!memcmp (&(a), &(b), sizeof (a)))
45 # if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
46 # define INO_T_EQ(a, b) 0
48 # define INO_T_EQ(a, b) ((a) == (b))
52 /* Internal structures and prototypes. */
54 /* A `struct pending_option' remembers one -D, -A, -U, -include, or
57 typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
60 struct pending_option *next;
62 cl_directive_handler handler;
65 /* The `pending' structure accumulates all the options that are not
66 actually processed until we hit cpp_start_read. It consists of
67 several lists, one for each type of option. We keep both head and
68 tail pointers for quick insertion. */
71 struct pending_option *directive_head, *directive_tail;
73 struct search_path *quote_head, *quote_tail;
74 struct search_path *brack_head, *brack_tail;
75 struct search_path *systm_head, *systm_tail;
76 struct search_path *after_head, *after_tail;
78 struct pending_option *imacros_head, *imacros_tail;
79 struct pending_option *include_head, *include_tail;
83 #define APPEND(pend, list, elt) \
84 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
85 else (pend)->list##_tail->next = (elt); \
86 (pend)->list##_tail = (elt); \
89 #define APPEND(pend, list, elt) \
90 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
91 else (pend)->list/**/_tail->next = (elt); \
92 (pend)->list/**/_tail = (elt); \
96 static void print_help PARAMS ((void));
97 static void path_include PARAMS ((cpp_reader *,
99 static void init_library PARAMS ((void));
100 static void init_builtins PARAMS ((cpp_reader *));
101 static void append_include_chain PARAMS ((cpp_reader *,
103 struct search_path * remove_dup_dir PARAMS ((cpp_reader *,
104 struct search_path *));
105 struct search_path * remove_dup_dirs PARAMS ((cpp_reader *,
106 struct search_path *));
107 static void merge_include_chains PARAMS ((cpp_reader *));
108 static void do_includes PARAMS ((cpp_reader *,
109 struct pending_option *,
111 static void set_lang PARAMS ((cpp_reader *, enum c_lang));
112 static void init_dependency_output PARAMS ((cpp_reader *));
113 static void init_standard_includes PARAMS ((cpp_reader *));
114 static void new_pending_directive PARAMS ((struct cpp_pending *,
116 cl_directive_handler));
117 static void output_deps PARAMS ((cpp_reader *));
118 static int parse_option PARAMS ((const char *));
120 /* Fourth argument to append_include_chain: chain to use.
121 Note it's never asked to append to the quote chain. */
122 enum { BRACKET = 0, SYSTEM, AFTER };
124 /* If we have designated initializers (GCC >2.7) these tables can be
125 initialized, constant data. Otherwise, they have to be filled in at
127 #if HAVE_DESIGNATED_INITIALIZERS
129 #define init_trigraph_map() /* Nothing. */
130 #define TRIGRAPH_MAP \
131 __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = {
134 #define s(p, v) [p] = v,
138 #define TRIGRAPH_MAP U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
139 static void init_trigraph_map PARAMS ((void)) { \
140 unsigned char *x = _cpp_trigraph_map;
143 #define s(p, v) x[p] = v;
148 s('=', '#') s(')', ']') s('!', '|')
149 s('(', '[') s('\'', '^') s('>', '}')
150 s('/', '\\') s('<', '{') s('-', '~')
157 /* Given a colon-separated list of file names PATH,
158 add all the names to the search path for include files. */
161 path_include (pfile, list, path)
172 /* Find the end of this name. */
174 while (*q != 0 && *q != PATH_SEPARATOR) q++;
177 /* An empty name in the path stands for the current directory. */
178 name = (char *) xmalloc (2);
184 /* Otherwise use the directory that is named. */
185 name = (char *) xmalloc (q - p + 1);
186 memcpy (name, p, q - p);
190 append_include_chain (pfile, name, path, 0);
192 /* Advance past this name. */
200 /* Append DIR to include path PATH. DIR must be permanently allocated
203 append_include_chain (pfile, dir, path, cxx_aware)
207 int cxx_aware ATTRIBUTE_UNUSED;
209 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
210 struct search_path *new;
216 _cpp_simplify_pathname (dir);
219 /* Dirs that don't exist are silently ignored. */
221 cpp_notice_from_errno (pfile, dir);
222 else if (CPP_OPTION (pfile, verbose))
223 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
227 if (!S_ISDIR (st.st_mode))
229 cpp_notice (pfile, "%s: Not a directory", dir);
234 if (len > pfile->max_include_len)
235 pfile->max_include_len = len;
237 new = (struct search_path *) xmalloc (sizeof (struct search_path));
240 new->ino = st.st_ino;
241 new->dev = st.st_dev;
242 /* Both systm and after include file lists should be treated as system
243 include files since these two lists are really just a concatenation
244 of one "system" list. */
245 if (path == SYSTEM || path == AFTER)
246 #ifdef NO_IMPLICIT_EXTERN_C
249 new->sysp = cxx_aware ? 1 : 2;
253 new->name_map = NULL;
258 case BRACKET: APPEND (pend, brack, new); break;
259 case SYSTEM: APPEND (pend, systm, new); break;
260 case AFTER: APPEND (pend, after, new); break;
264 /* Handle a duplicated include path. PREV is the link in the chain
265 before the duplicate. The duplicate is removed from the chain and
266 freed. Returns PREV. */
268 remove_dup_dir (pfile, prev)
270 struct search_path *prev;
272 struct search_path *cur = prev->next;
274 if (CPP_OPTION (pfile, verbose))
275 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
277 prev->next = cur->next;
278 free ((PTR) cur->name);
284 /* Remove duplicate directories from a chain. Returns the tail of the
285 chain, or NULL if the chain is empty. This algorithm is quadratic
286 in the number of -I switches, which is acceptable since there
287 aren't usually that many of them. */
289 remove_dup_dirs (pfile, head)
291 struct search_path *head;
293 struct search_path *prev = NULL, *cur, *other;
295 for (cur = head; cur; cur = cur->next)
297 for (other = head; other != cur; other = other->next)
298 if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
300 cur = remove_dup_dir (pfile, prev);
309 /* Merge the four include chains together in the order quote, bracket,
310 system, after. Remove duplicate dirs (as determined by
311 INO_T_EQ()). The system_include and after_include chains are never
312 referred to again after this function; all access is through the
313 bracket_include path.
315 For the future: Check if the directory is empty (but
316 how?) and possibly preload the include hash. */
319 merge_include_chains (pfile)
322 struct search_path *quote, *brack, *systm, *qtail;
324 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
326 quote = pend->quote_head;
327 brack = pend->brack_head;
328 systm = pend->systm_head;
329 qtail = pend->quote_tail;
331 /* Paste together bracket, system, and after include chains. */
333 pend->systm_tail->next = pend->after_head;
335 systm = pend->after_head;
338 pend->brack_tail->next = systm;
342 /* This is a bit tricky. First we drop dupes from the quote-include
343 list. Then we drop dupes from the bracket-include list.
344 Finally, if qtail and brack are the same directory, we cut out
345 brack and move brack up to point to qtail.
347 We can't just merge the lists and then uniquify them because
348 then we may lose directories from the <> search path that should
349 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
350 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
351 -Ibar -I- -Ifoo -Iquux. */
353 remove_dup_dirs (pfile, brack);
354 qtail = remove_dup_dirs (pfile, quote);
360 /* If brack == qtail, remove brack as it's simpler. */
361 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
362 brack = remove_dup_dir (pfile, qtail);
367 CPP_OPTION (pfile, quote_include) = quote;
368 CPP_OPTION (pfile, bracket_include) = brack;
371 /* Sets internal flags correctly for a given language, and defines
372 macros if necessary. */
374 set_lang (pfile, lang)
379 CPP_OPTION (pfile, lang) = lang;
380 CPP_OPTION (pfile, objc) = 0;
381 CPP_OPTION (pfile, cplusplus) = 0;
382 CPP_OPTION (pfile, extended_numbers) = 1; /* Allowed in GNU C and C99. */
388 CPP_OPTION (pfile, trigraphs) = 0;
389 CPP_OPTION (pfile, dollars_in_ident) = 1;
390 CPP_OPTION (pfile, cplusplus_comments) = 1;
391 CPP_OPTION (pfile, digraphs) = 1;
392 CPP_OPTION (pfile, c99) = 1;
395 CPP_OPTION (pfile, trigraphs) = 0;
396 CPP_OPTION (pfile, dollars_in_ident) = 1;
397 CPP_OPTION (pfile, cplusplus_comments) = 1;
398 CPP_OPTION (pfile, digraphs) = 1;
399 CPP_OPTION (pfile, c99) = 0;
405 CPP_OPTION (pfile, trigraphs) = 1;
406 CPP_OPTION (pfile, dollars_in_ident) = 0;
407 CPP_OPTION (pfile, cplusplus_comments) = 0;
408 CPP_OPTION (pfile, digraphs) = lang == CLK_STDC94;
409 CPP_OPTION (pfile, c99) = 0;
410 CPP_OPTION (pfile, extended_numbers) = 0;
413 CPP_OPTION (pfile, trigraphs) = 1;
414 CPP_OPTION (pfile, dollars_in_ident) = 0;
415 CPP_OPTION (pfile, cplusplus_comments) = 1;
416 CPP_OPTION (pfile, digraphs) = 1;
417 CPP_OPTION (pfile, c99) = 1;
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;
435 CPP_OPTION (pfile, cplusplus) = 1;
436 CPP_OPTION (pfile, trigraphs) = lang == CLK_CXX98;
437 CPP_OPTION (pfile, dollars_in_ident) = lang == CLK_GNUCXX;
438 CPP_OPTION (pfile, cplusplus_comments) = 1;
439 CPP_OPTION (pfile, digraphs) = 1;
440 CPP_OPTION (pfile, c99) = 0;
445 CPP_OPTION (pfile, trigraphs) = 0;
446 CPP_OPTION (pfile, dollars_in_ident) = 0; /* Maybe not? */
447 CPP_OPTION (pfile, cplusplus_comments) = 1;
448 CPP_OPTION (pfile, digraphs) = 0;
449 CPP_OPTION (pfile, c99) = 0;
455 static int opt_comp PARAMS ((const void *, const void *));
457 /* Run-time sorting of options array. */
462 return strcmp (((struct cl_option *) p1)->opt_text,
463 ((struct cl_option *) p2)->opt_text);
467 /* init initializes library global state. It might not need to
468 do anything depending on the platform and compiler. */
473 static int initialized = 0;
480 /* For non-ASCII hosts, the cl_options array needs to be sorted at
482 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
485 /* Set up the trigraph map. This doesn't need to do anything if
486 we were compiled with a compiler that supports C99 designated
488 init_trigraph_map ();
492 /* Initialize a cpp_reader structure. */
494 cpp_create_reader (table, lang)
498 struct spec_nodes *s;
501 /* Initialise this instance of the library if it hasn't been already. */
504 pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
506 set_lang (pfile, lang);
507 CPP_OPTION (pfile, warn_import) = 1;
508 CPP_OPTION (pfile, discard_comments) = 1;
509 CPP_OPTION (pfile, show_column) = 1;
510 CPP_OPTION (pfile, tabstop) = 8;
511 CPP_OPTION (pfile, operator_names) = 1;
513 CPP_OPTION (pfile, pending) =
514 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
516 /* It's simplest to just create this struct whether or not it will
518 pfile->deps = deps_init ();
520 /* Initialize lexer state. */
521 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
523 /* Indicate date and time not yet calculated. */
524 pfile->date.type = CPP_EOF;
526 /* Initialise the base context. */
527 pfile->context = &pfile->base_context;
528 pfile->base_context.macro = 0;
529 pfile->base_context.prev = pfile->base_context.next = 0;
531 /* Identifier pool initially 8K. Unaligned, permanent pool. */
532 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
534 /* Argument pool initially 8K. Aligned, temporary pool. */
535 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
537 /* Macro pool initially 8K. Aligned, permanent pool. */
538 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
540 /* Initialise the buffer obstack. */
541 gcc_obstack_init (&pfile->buffer_ob);
543 /* Initialise the hashtable. */
544 _cpp_init_hashtable (pfile, table);
546 _cpp_init_directives (pfile);
547 _cpp_init_includes (pfile);
548 _cpp_init_internal_pragmas (pfile);
550 /* Initialize the special nodes. */
551 s = &pfile->spec_nodes;
552 s->n_L = cpp_lookup (pfile, DSC("L"));
553 s->n_defined = cpp_lookup (pfile, DSC("defined"));
554 s->n_true = cpp_lookup (pfile, DSC("true"));
555 s->n_false = cpp_lookup (pfile, DSC("false"));
556 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
557 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
558 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
559 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
560 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
561 /* SDCC _asm specific */
562 s->n__asm = cpp_lookup (pfile, DSC("_asm"));
567 /* Free resources used by PFILE. Accessing PFILE after this function
568 returns leads to undefined behaviour. */
574 struct search_path *dir, *dirn;
575 cpp_context *context, *contextn;
577 while (CPP_BUFFER (pfile) != NULL)
578 cpp_pop_buffer (pfile);
580 if (pfile->macro_buffer)
582 free ((PTR) pfile->macro_buffer);
583 pfile->macro_buffer = NULL;
584 pfile->macro_buffer_len = 0;
587 deps_free (pfile->deps);
588 obstack_free (&pfile->buffer_ob, 0);
590 _cpp_destroy_hashtable (pfile);
591 _cpp_cleanup_includes (pfile);
592 _cpp_free_lookaheads (pfile);
594 _cpp_free_pool (&pfile->ident_pool);
595 _cpp_free_pool (&pfile->macro_pool);
596 _cpp_free_pool (&pfile->argument_pool);
598 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
601 free ((PTR) dir->name);
605 for (context = pfile->base_context.next; context; context = contextn)
607 contextn = context->next;
611 result = pfile->errors;
618 /* This structure defines one built-in identifier. A node will be
619 entered in the hash table under the name NAME, with value VALUE (if
620 any). If flags has OPERATOR, the node's operator field is used; if
621 flags has BUILTIN the node's builtin field is used. Macros that are
622 known at build time should not be flagged BUILTIN, as then they do
623 not appear in macro dumps with e.g. -dM or -dD.
625 Two values are not compile time constants, so we tag
626 them in the FLAGS field instead:
627 VERS value is the global version_string, quoted
628 ULP value is the global user_label_prefix
630 Also, macros with CPLUS set in the flags field are entered only for C++. */
636 unsigned char builtin;
637 unsigned char operator;
638 unsigned short flags;
645 #define OPERATOR 0x10
647 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
648 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
649 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
650 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
651 static const struct builtin builtin_array[] =
653 B("__TIME__", BT_TIME),
654 B("__DATE__", BT_DATE),
655 B("__FILE__", BT_FILE),
656 B("__BASE_FILE__", BT_BASE_FILE),
657 B("__LINE__", BT_SPECLINE),
658 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
660 X("__VERSION__", VERS),
661 X("__USER_LABEL_PREFIX__", ULP),
662 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
663 C("__HAVE_BUILTIN_SETJMP__", "1"),
664 #ifndef NO_BUILTIN_SIZE_TYPE
665 C("__SIZE_TYPE__", SIZE_TYPE),
667 #ifndef NO_BUILTIN_PTRDIFF_TYPE
668 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
670 #ifndef NO_BUILTIN_WCHAR_TYPE
671 C("__WCHAR_TYPE__", WCHAR_TYPE),
673 #ifndef NO_BUILTIN_WINT_TYPE
674 C("__WINT_TYPE__", WINT_TYPE),
676 #ifdef STDC_0_IN_SYSTEM_HEADERS
677 B("__STDC__", BT_STDC),
682 /* Named operators known to the preprocessor. These cannot be #defined
683 and always have their stated meaning. They are treated like normal
684 identifiers except for the type code and the meaning. Most of them
685 are only for C++ (but see iso646.h). */
686 O("and", CPP_AND_AND, CPLUS),
687 O("and_eq", CPP_AND_EQ, CPLUS),
688 O("bitand", CPP_AND, CPLUS),
689 O("bitor", CPP_OR, CPLUS),
690 O("compl", CPP_COMPL, CPLUS),
691 O("not", CPP_NOT, CPLUS),
692 O("not_eq", CPP_NOT_EQ, CPLUS),
693 O("or", CPP_OR_OR, CPLUS),
694 O("or_eq", CPP_OR_EQ, CPLUS),
695 O("xor", CPP_XOR, CPLUS),
696 O("xor_eq", CPP_XOR_EQ, CPLUS)
702 #define builtin_array_end \
703 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
705 /* Subroutine of cpp_start_read; reads the builtins table above and
706 enters the macros into the hash table. */
708 init_builtins (pfile)
711 const struct builtin *b;
713 for(b = builtin_array; b < builtin_array_end; b++)
715 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
718 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
721 if (b->flags & (OPERATOR | BUILTIN))
723 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
724 if (b->flags & OPERATOR)
726 hp->flags |= NODE_OPERATOR;
727 hp->value.operator = b->operator;
732 hp->flags |= NODE_BUILTIN | NODE_WARN;
733 hp->value.builtin = b->builtin;
736 else /* A standard macro of some kind. */
743 /* Allocate enough space for 'name "value"\n\0'. */
744 str = alloca (b->len + strlen (version_string) + 5);
745 sprintf (str, "%s \"%s\"\n", b->name, version_string);
750 val = CPP_OPTION (pfile, user_label_prefix);
754 /* Allocate enough space for "name value\n\0". */
755 str = alloca (b->len + strlen (val) + 3);
756 sprintf(str, "%s %s\n", b->name, val);
759 _cpp_define_builtin (pfile, str);
763 if (CPP_OPTION (pfile, cplusplus))
765 _cpp_define_builtin (pfile, "__cplusplus 1");
766 if (SUPPORTS_ONE_ONLY)
767 _cpp_define_builtin (pfile, "__GXX_WEAK__ 1");
769 _cpp_define_builtin (pfile, "__GXX_WEAK__ 0");
771 if (CPP_OPTION (pfile, objc))
772 _cpp_define_builtin (pfile, "__OBJC__ 1");
774 if (CPP_OPTION (pfile, lang) == CLK_STDC94)
775 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
776 else if (CPP_OPTION (pfile, c99))
777 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
779 if (CPP_OPTION (pfile, lang) == CLK_STDC89
780 || CPP_OPTION (pfile, lang) == CLK_STDC94
781 || CPP_OPTION (pfile, lang) == CLK_STDC99)
782 _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1");
783 else if (CPP_OPTION (pfile, lang) == CLK_ASM)
784 _cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
791 #undef builtin_array_end
793 /* And another subroutine. This one sets up the standard include path. */
795 init_standard_includes (pfile)
799 const struct default_include *p;
800 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
802 /* Several environment variables may add to the include search path.
803 CPATH specifies an additional list of directories to be searched
804 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
805 etc. specify an additional list of directories to be searched as
806 if specified with -isystem, for the language indicated. */
808 GET_ENV_PATH_LIST (path, "CPATH");
809 if (path != 0 && *path != 0)
810 path_include (pfile, path, BRACKET);
812 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
815 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
818 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
821 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
824 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
827 if (path != 0 && *path != 0)
828 path_include (pfile, path, SYSTEM);
830 /* Search "translated" versions of GNU directories.
831 These have /usr/local/lib/gcc... replaced by specd_prefix. */
832 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
834 /* Remove the `include' from /usr/local/lib/gcc.../include.
835 GCC_INCLUDE_DIR will always end in /include. */
836 int default_len = cpp_GCC_INCLUDE_DIR_len;
837 char *default_prefix = (char *) alloca (default_len + 1);
838 int specd_len = strlen (specd_prefix);
840 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
841 default_prefix[default_len] = '\0';
843 for (p = cpp_include_defaults; p->fname; p++)
845 /* Some standard dirs are only for C++. */
847 || (CPP_OPTION (pfile, cplusplus)
848 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
850 /* Does this dir start with the prefix? */
851 if (!memcmp (p->fname, default_prefix, default_len))
853 /* Yes; change prefix and add to search list. */
854 int flen = strlen (p->fname);
855 int this_len = specd_len + flen - default_len;
856 char *str = (char *) xmalloc (this_len + 1);
857 memcpy (str, specd_prefix, specd_len);
858 memcpy (str + specd_len,
859 p->fname + default_len,
860 flen - default_len + 1);
862 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
868 /* Search ordinary names for GNU include directories. */
869 for (p = cpp_include_defaults; p->fname; p++)
871 /* Some standard dirs are only for C++. */
873 || (CPP_OPTION (pfile, cplusplus)
874 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
876 char *str = xstrdup (update_path (p->fname, p->component));
877 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
882 /* Handles -imacro and -include from the command line. */
884 do_includes (pfile, p, scan)
886 struct pending_option *p;
891 struct pending_option *q;
893 /* Don't handle if -fpreprocessed. Later: maybe update this to
894 use the #include "" search path if cpp_read_file fails. */
895 if (CPP_OPTION (pfile, preprocessed))
896 cpp_error (pfile, "-include and -imacros cannot be used with -fpreprocessed");
900 header.type = CPP_STRING;
901 header.val.str.text = (const unsigned char *) p->arg;
902 header.val.str.len = strlen (p->arg);
903 if (_cpp_execute_include (pfile, &header, IT_CMDLINE) && scan)
904 cpp_scan_buffer_nooutput (pfile, 0);
912 /* This is called after options have been processed. Setup for
913 processing input from the file named FNAME, or stdin if it is the
914 empty string. Return 1 on success, 0 on failure. */
916 cpp_start_read (pfile, fname)
920 struct pending_option *p, *q;
922 /* Set up the include search path now. */
923 if (! CPP_OPTION (pfile, no_standard_includes))
924 init_standard_includes (pfile);
926 merge_include_chains (pfile);
928 /* With -v, print the list of dirs to search. */
929 if (CPP_OPTION (pfile, verbose))
931 struct search_path *l;
932 fprintf (stderr, _("#include \"...\" search starts here:\n"));
933 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
935 if (l == CPP_OPTION (pfile, bracket_include))
936 fprintf (stderr, _("#include <...> search starts here:\n"));
937 fprintf (stderr, " %s\n", l->name);
939 fprintf (stderr, _("End of search list.\n"));
942 if (CPP_OPTION (pfile, print_deps))
943 /* Set the default target (if there is none already). */
944 deps_add_default_target (pfile->deps, fname);
946 /* Open the main input file. This must be done early, so we have a
947 buffer to stand on. */
948 if (!_cpp_read_file (pfile, fname))
951 /* If already preprocessed, don't install __LINE__, etc., and ignore
952 command line definitions and assertions. Handle -U's, -D's and
953 -A's in the order they were seen. */
954 if (! CPP_OPTION (pfile, preprocessed))
955 init_builtins (pfile);
957 p = CPP_OPTION (pfile, pending)->directive_head;
960 if (! CPP_OPTION (pfile, preprocessed))
961 (*p->handler) (pfile, p->arg);
967 /* The -imacros files can be scanned now, but the -include files
968 have to be pushed onto the buffer stack and processed later,
969 otherwise cppmain.c won't see the tokens. include_head was built
970 up as a stack, and popping this stack onto the buffer stack means
971 we preserve the order of the command line. */
972 do_includes (pfile, CPP_OPTION (pfile, pending)->imacros_head, 1);
973 do_includes (pfile, CPP_OPTION (pfile, pending)->include_head, 0);
975 free (CPP_OPTION (pfile, pending));
976 CPP_OPTION (pfile, pending) = NULL;
981 /* Use mkdeps.c to output dependency information. */
986 /* Stream on which to print the dependency information. */
987 FILE *deps_stream = 0;
988 const char *deps_mode = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
990 if (CPP_OPTION (pfile, deps_file) == 0)
991 deps_stream = stdout;
994 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
995 if (deps_stream == 0)
997 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
1002 deps_write (pfile->deps, deps_stream, 72);
1004 if (CPP_OPTION (pfile, deps_phony_targets))
1005 deps_phony_targets (pfile->deps, deps_stream);
1007 /* Don't close stdout. */
1008 if (CPP_OPTION (pfile, deps_file))
1010 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1011 cpp_fatal (pfile, "I/O error on output");
1015 /* This is called at the end of preprocessing. It pops the
1016 last buffer and writes dependency output. It should also
1017 clear macro definitions, such that you could call cpp_start_read
1018 with a new filename to restart processing. */
1023 if (CPP_BUFFER (pfile))
1025 cpp_ice (pfile, "buffers still stacked in cpp_finish");
1026 while (CPP_BUFFER (pfile))
1027 cpp_pop_buffer (pfile);
1030 /* Don't write the deps file if preprocessing has failed. */
1031 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1032 output_deps (pfile);
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_dollar) \
1070 DEF_OPT("+", 0, OPT_plus) \
1071 DEF_OPT("-help", 0, OPT__help) \
1072 DEF_OPT("-target-help", 0, OPT_target__help) \
1073 DEF_OPT("-version", 0, OPT__version) \
1074 DEF_OPT("A", no_ass, OPT_A) \
1075 DEF_OPT("C", 0, OPT_C) \
1076 DEF_OPT("D", no_mac, OPT_D) \
1077 DEF_OPT("H", 0, OPT_H) \
1078 DEF_OPT("I", no_dir, OPT_I) \
1079 DEF_OPT("M", 0, OPT_M) \
1080 DEF_OPT("MD", no_fil, OPT_MD) \
1081 DEF_OPT("MF", no_fil, OPT_MF) \
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("MQ", no_tgt, OPT_MQ) \
1087 DEF_OPT("MT", no_tgt, OPT_MT) \
1088 DEF_OPT("P", 0, OPT_P) \
1089 DEF_OPT("U", no_mac, OPT_U) \
1090 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1091 DEF_OPT("d", no_arg, OPT_d) \
1092 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1093 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1094 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1095 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1096 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1097 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1098 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1099 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
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("version", 0, OPT_version) \
1134 DEF_OPT("w", 0, OPT_w)
1136 #define DEF_OPT(text, msg, code) code,
1139 COMMAND_LINE_OPTIONS
1146 const char *opt_text;
1149 enum opt_code opt_code;
1152 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1154 static struct cl_option cl_options[] =
1156 static const struct cl_option cl_options[] =
1159 COMMAND_LINE_OPTIONS
1162 #undef COMMAND_LINE_OPTIONS
1164 /* Perform a binary search to find which, if any, option the given
1165 command-line matches. Returns its index in the option array,
1166 negative on failure. Complications arise since some options can be
1167 suffixed with an argument, and multiple complete matches can occur,
1168 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to
1169 accept options beginning with -W that we do not recognise, but not
1170 to swallow any subsequent command line argument; this is handled as
1171 special cases in cpp_handle_option. */
1173 parse_option (input)
1176 unsigned int md, mn, mx;
1187 opt_len = cl_options[md].opt_len;
1188 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1196 if (input[opt_len] == '\0')
1198 /* We were passed more text. If the option takes an argument,
1199 we may match a later option or we may have been passed the
1200 argument. The longest possible option match succeeds.
1201 If the option takes no arguments we have not matched and
1202 continue the search (e.g. input="stdc++" match was "stdc"). */
1204 if (cl_options[md].msg)
1206 /* Scan forwards. If we get an exact match, return it.
1207 Otherwise, return the longest option-accepting match.
1208 This loops no more than twice with current options. */
1210 for (; mn < (unsigned int) N_OPTS; mn++)
1212 opt_len = cl_options[mn].opt_len;
1213 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1215 if (input[opt_len] == '\0')
1217 if (cl_options[mn].msg)
1228 /* Handle one command-line option in (argc, argv).
1229 Can be called multiple times, to handle multiple sets of options.
1230 Returns number of strings consumed. */
1233 cpp_handle_option (pfile, argc, argv)
1239 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1241 /* Interpret "-" or a non-option as a file name. */
1242 if (argv[i][0] != '-' || argv[i][1] == '\0')
1244 if (CPP_OPTION (pfile, in_fname) == NULL)
1245 CPP_OPTION (pfile, in_fname) = argv[i];
1246 else if (CPP_OPTION (pfile, out_fname) == NULL)
1247 CPP_OPTION (pfile, out_fname) = argv[i];
1249 cpp_fatal (pfile, "Too many filenames. Type %s --help for usage info",
1254 enum opt_code opt_code;
1256 const char *arg = 0;
1258 /* Skip over '-'. */
1259 opt_index = parse_option (&argv[i][1]);
1263 opt_code = cl_options[opt_index].opt_code;
1264 if (cl_options[opt_index].msg)
1266 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1268 /* Yuk. Special case for -W as it must not swallow
1269 up any following argument. If this becomes common, add
1270 another field to the cl_options table. */
1271 if (arg[0] == '\0' && opt_code != OPT_W)
1276 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1284 case N_OPTS: /* Shut GCC up. */
1286 case OPT_fleading_underscore:
1287 CPP_OPTION (pfile, user_label_prefix) = "_";
1289 case OPT_fno_leading_underscore:
1290 CPP_OPTION (pfile, user_label_prefix) = "";
1292 case OPT_fno_operator_names:
1293 CPP_OPTION (pfile, operator_names) = 0;
1295 case OPT_fpreprocessed:
1296 CPP_OPTION (pfile, preprocessed) = 1;
1298 case OPT_fno_preprocessed:
1299 CPP_OPTION (pfile, preprocessed) = 0;
1301 case OPT_fshow_column:
1302 CPP_OPTION (pfile, show_column) = 1;
1304 case OPT_fno_show_column:
1305 CPP_OPTION (pfile, show_column) = 0;
1308 /* Silently ignore empty string, non-longs and silly values. */
1312 long tabstop = strtol (arg, &endptr, 10);
1313 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1314 CPP_OPTION (pfile, tabstop) = tabstop;
1318 CPP_OPTION (pfile, inhibit_warnings) = 1;
1323 CPP_OPTION (pfile, help_only) = 1;
1325 case OPT_target__help:
1326 /* Print if any target specific options. cpplib has none, but
1327 make sure help_only gets set. */
1328 CPP_OPTION (pfile, help_only) = 1;
1331 /* --version inhibits compilation, -version doesn't. -v means
1332 verbose and -version. Historical reasons, don't ask. */
1334 CPP_OPTION (pfile, help_only) = 1;
1335 pfile->print_version = 1;
1338 CPP_OPTION (pfile, verbose) = 1;
1339 pfile->print_version = 1;
1342 pfile->print_version = 1;
1346 CPP_OPTION (pfile, discard_comments) = 0;
1349 CPP_OPTION (pfile, no_line_commands) = 1;
1351 case OPT_dollar: /* Don't include $ in identifiers. */
1352 CPP_OPTION (pfile, dollars_in_ident) = 0;
1355 CPP_OPTION (pfile, print_include_names) = 1;
1358 new_pending_directive (pend, arg, cpp_define);
1360 case OPT_pedantic_errors:
1361 CPP_OPTION (pfile, pedantic_errors) = 1;
1364 CPP_OPTION (pfile, pedantic) = 1;
1367 CPP_OPTION (pfile, trigraphs) = 1;
1370 CPP_OPTION (pfile, cplusplus) = 1;
1371 CPP_OPTION (pfile, cplusplus_comments) = 1;
1374 CPP_OPTION (pfile, remap) = 1;
1377 CPP_OPTION (pfile, include_prefix) = arg;
1378 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1381 set_lang (pfile, CLK_GNUC89);
1383 case OPT_lang_cplusplus:
1384 set_lang (pfile, CLK_GNUCXX);
1387 set_lang (pfile, CLK_OBJC);
1389 case OPT_lang_objcplusplus:
1390 set_lang (pfile, CLK_OBJCXX);
1393 set_lang (pfile, CLK_ASM);
1395 case OPT_std_cplusplus98:
1396 set_lang (pfile, CLK_CXX98);
1399 set_lang (pfile, CLK_GNUC89);
1403 set_lang (pfile, CLK_GNUC99);
1405 case OPT_std_iso9899_199409:
1406 set_lang (pfile, CLK_STDC94);
1408 case OPT_std_iso9899_1990:
1411 set_lang (pfile, CLK_STDC89);
1413 case OPT_std_iso9899_199x:
1414 case OPT_std_iso9899_1999:
1417 set_lang (pfile, CLK_STDC99);
1420 /* -nostdinc causes no default include directories.
1421 You must specify all include-file directories with -I. */
1422 CPP_OPTION (pfile, no_standard_includes) = 1;
1424 case OPT_nostdincplusplus:
1425 /* -nostdinc++ causes no default C++-specific include directories. */
1426 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1429 if (CPP_OPTION (pfile, out_fname) == NULL)
1430 CPP_OPTION (pfile, out_fname) = arg;
1433 cpp_fatal (pfile, "Output filename specified twice");
1438 /* Args to -d specify what parts of macros to dump.
1439 Silently ignore unrecognised options; they may
1440 be aimed at the compiler proper. */
1444 while ((c = *arg++) != '\0')
1448 CPP_OPTION (pfile, dump_macros) = dump_only;
1449 CPP_OPTION (pfile, no_output) = 1;
1452 CPP_OPTION (pfile, dump_macros) = dump_names;
1455 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1458 CPP_OPTION (pfile, dump_includes) = 1;
1465 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1468 CPP_OPTION (pfile, print_deps) = 2;
1471 CPP_OPTION (pfile, print_deps) = 1;
1474 CPP_OPTION (pfile, deps_file) = arg;
1477 CPP_OPTION (pfile, deps_phony_targets) = 1;
1481 /* Add a target. -MQ quotes for Make. */
1482 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1485 /* -MD and -MMD for cpp0 are deprecated and undocumented
1486 (use -M or -MM with -MF instead), and probably should be
1487 removed with the next major GCC version. For the moment
1488 we allow these for the benefit of Automake 1.4, which
1489 uses these when dependency tracking is enabled. Automake
1490 1.5 will fix this. */
1492 CPP_OPTION (pfile, print_deps) = 2;
1493 CPP_OPTION (pfile, deps_file) = arg;
1496 CPP_OPTION (pfile, print_deps) = 1;
1497 CPP_OPTION (pfile, deps_file) = arg;
1503 /* -A with an argument beginning with '-' acts as
1504 #unassert on whatever immediately follows the '-'.
1505 If "-" is the whole argument, we eliminate all
1506 predefined macros and assertions, including those
1507 that were specified earlier on the command line.
1508 That way we can get rid of any that were passed
1509 automatically in from GCC. */
1513 struct pending_option *o1, *o2;
1515 o1 = pend->directive_head;
1522 pend->directive_head = NULL;
1523 pend->directive_tail = NULL;
1526 new_pending_directive (pend, arg + 1, cpp_unassert);
1529 new_pending_directive (pend, arg, cpp_assert);
1532 new_pending_directive (pend, arg, cpp_undef);
1534 case OPT_I: /* Add directory to path for includes. */
1535 if (!strcmp (arg, "-"))
1538 Use the preceding -I directories for #include "..."
1539 but not #include <...>.
1540 Don't search the directory of the present file
1541 for #include "...". (Note that -I. -I- is not the same as
1542 the default setup; -I. uses the compiler's working dir.) */
1543 if (! CPP_OPTION (pfile, ignore_srcdir))
1545 pend->quote_head = pend->brack_head;
1546 pend->quote_tail = pend->brack_tail;
1547 pend->brack_head = 0;
1548 pend->brack_tail = 0;
1549 CPP_OPTION (pfile, ignore_srcdir) = 1;
1553 cpp_fatal (pfile, "-I- specified twice");
1558 append_include_chain (pfile, (char *)xstrdup(arg), BRACKET, 0);
1561 /* Add directory to beginning of system include path, as a system
1562 include directory. */
1563 append_include_chain (pfile, (char *)xstrdup(arg), SYSTEM, 0);
1567 struct pending_option *o = (struct pending_option *)
1568 xmalloc (sizeof (struct pending_option));
1571 /* This list has to be built in reverse order so that
1572 when cpp_start_read pushes all the -include files onto
1573 the buffer stack, they will be scanned in forward order. */
1574 o->next = pend->include_head;
1575 pend->include_head = o;
1580 struct pending_option *o = (struct pending_option *)
1581 xmalloc (sizeof (struct pending_option));
1585 APPEND (pend, imacros, o);
1588 case OPT_iwithprefix:
1589 /* Add directory to end of path for includes,
1590 with the default prefix at the front of its name. */
1592 case OPT_iwithprefixbefore:
1593 /* Add directory to main path for includes,
1594 with the default prefix at the front of its name. */
1601 if (CPP_OPTION (pfile, include_prefix) != 0)
1603 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1604 fname = xmalloc (ipl + len + 1);
1605 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1606 memcpy (fname + ipl, arg, len + 1);
1608 else if (cpp_GCC_INCLUDE_DIR_len)
1610 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1611 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1612 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1615 fname = xstrdup (arg);
1617 append_include_chain (pfile, fname,
1618 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1622 /* Add directory to end of path for includes. */
1623 append_include_chain (pfile, (char *)xstrdup (arg), AFTER, 0);
1626 /* Silently ignore unrecognised options. */
1627 if (!strcmp (argv[i], "-Wall"))
1629 CPP_OPTION (pfile, warn_trigraphs) = 1;
1630 CPP_OPTION (pfile, warn_comments) = 1;
1632 else if (!strcmp (argv[i], "-Wtraditional"))
1633 CPP_OPTION (pfile, warn_traditional) = 1;
1634 else if (!strcmp (argv[i], "-Wtrigraphs"))
1635 CPP_OPTION (pfile, warn_trigraphs) = 1;
1636 else if (!strcmp (argv[i], "-Wcomment"))
1637 CPP_OPTION (pfile, warn_comments) = 1;
1638 else if (!strcmp (argv[i], "-Wcomments"))
1639 CPP_OPTION (pfile, warn_comments) = 1;
1640 else if (!strcmp (argv[i], "-Wundef"))
1641 CPP_OPTION (pfile, warn_undef) = 1;
1642 else if (!strcmp (argv[i], "-Wimport"))
1643 CPP_OPTION (pfile, warn_import) = 1;
1644 else if (!strcmp (argv[i], "-Werror"))
1645 CPP_OPTION (pfile, warnings_are_errors) = 1;
1646 else if (!strcmp (argv[i], "-Wsystem-headers"))
1647 CPP_OPTION (pfile, warn_system_headers) = 1;
1648 else if (!strcmp (argv[i], "-Wno-traditional"))
1649 CPP_OPTION (pfile, warn_traditional) = 0;
1650 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1651 CPP_OPTION (pfile, warn_trigraphs) = 0;
1652 else if (!strcmp (argv[i], "-Wno-comment"))
1653 CPP_OPTION (pfile, warn_comments) = 0;
1654 else if (!strcmp (argv[i], "-Wno-comments"))
1655 CPP_OPTION (pfile, warn_comments) = 0;
1656 else if (!strcmp (argv[i], "-Wno-undef"))
1657 CPP_OPTION (pfile, warn_undef) = 0;
1658 else if (!strcmp (argv[i], "-Wno-import"))
1659 CPP_OPTION (pfile, warn_import) = 0;
1660 else if (!strcmp (argv[i], "-Wno-error"))
1661 CPP_OPTION (pfile, warnings_are_errors) = 0;
1662 else if (!strcmp (argv[i], "-Wno-system-headers"))
1663 CPP_OPTION (pfile, warn_system_headers) = 0;
1670 /* Handle command-line options in (argc, argv).
1671 Can be called multiple times, to handle multiple sets of options.
1672 Returns if an unrecognized option is seen.
1673 Returns number of strings consumed. */
1675 cpp_handle_options (pfile, argc, argv)
1681 int strings_processed;
1683 for (i = 0; i < argc; i += strings_processed)
1685 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1686 if (strings_processed == 0)
1693 /* Extra processing when all options are parsed, after all calls to
1694 cpp_handle_option[s]. Consistency checks etc. */
1696 cpp_post_options (pfile)
1699 if (pfile->print_version)
1701 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1702 #ifdef TARGET_VERSION
1705 fputc ('\n', stderr);
1708 /* Canonicalize in_fname and out_fname. We guarantee they are not
1709 NULL, and that the empty string represents stdin / stdout. */
1710 if (CPP_OPTION (pfile, in_fname) == NULL
1711 || !strcmp (CPP_OPTION (pfile, in_fname), "-"))
1712 CPP_OPTION (pfile, in_fname) = "";
1714 if (CPP_OPTION (pfile, out_fname) == NULL
1715 || !strcmp (CPP_OPTION (pfile, out_fname), "-"))
1716 CPP_OPTION (pfile, out_fname) = "";
1718 /* -Wtraditional is not useful in C++ mode. */
1719 if (CPP_OPTION (pfile, cplusplus))
1720 CPP_OPTION (pfile, warn_traditional) = 0;
1722 /* Set this if it hasn't been set already. */
1723 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1724 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1726 /* Permanently disable macro expansion if we are rescanning
1727 preprocessed text. */
1728 if (CPP_OPTION (pfile, preprocessed))
1729 pfile->state.prevent_expansion = 1;
1731 /* We need to do this after option processing and before
1732 cpp_start_read, as cppmain.c relies on the options->no_output to
1733 set its callbacks correctly before calling cpp_start_read. */
1734 init_dependency_output (pfile);
1736 /* After checking the environment variables, check if -M or -MM has
1737 not been specified, but other -M options have. */
1738 if (CPP_OPTION (pfile, print_deps) == 0 &&
1739 (CPP_OPTION (pfile, print_deps_missing_files)
1740 || CPP_OPTION (pfile, deps_file)
1741 || CPP_OPTION (pfile, deps_phony_targets)))
1742 cpp_fatal (pfile, "you must additionally specify either -M or -MM");
1745 /* Set up dependency-file output. */
1747 init_dependency_output (pfile)
1750 char *spec, *s, *output_file;
1752 /* Either of two environment variables can specify output of deps.
1753 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1754 where OUTPUT_FILE is the file to write deps info to
1755 and DEPS_TARGET is the target to mention in the deps. */
1757 if (CPP_OPTION (pfile, print_deps) == 0)
1759 spec = getenv ("DEPENDENCIES_OUTPUT");
1761 CPP_OPTION (pfile, print_deps) = 1;
1764 spec = getenv ("SUNPRO_DEPENDENCIES");
1766 CPP_OPTION (pfile, print_deps) = 2;
1771 /* Find the space before the DEPS_TARGET, if there is one. */
1772 s = strchr (spec, ' ');
1775 /* Let the caller perform MAKE quoting. */
1776 deps_add_target (pfile->deps, s + 1, 0);
1777 output_file = (char *) xmalloc (s - spec + 1);
1778 memcpy (output_file, spec, s - spec);
1779 output_file[s - spec] = 0;
1784 /* Command line overrides environment variables. */
1785 if (CPP_OPTION (pfile, deps_file) == 0)
1786 CPP_OPTION (pfile, deps_file) = output_file;
1787 CPP_OPTION (pfile, print_deps_append) = 1;
1790 /* If dependencies go to standard output, or -MG is used, we should
1791 suppress output. The user may be requesting other stuff to
1792 stdout, with -dM, -v etc. We let them shoot themselves in the
1794 if (CPP_OPTION (pfile, deps_file) == 0
1795 || CPP_OPTION (pfile, print_deps_missing_files))
1796 CPP_OPTION (pfile, no_output) = 1;
1802 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1803 /* To keep the lines from getting too long for some compilers, limit
1804 to about 500 characters (6 lines) per chunk. */
1807 -include <file> Include the contents of <file> before other files\n\
1808 -imacros <file> Accept definition of macros in <file>\n\
1809 -iprefix <path> Specify <path> as a prefix for next two options\n\
1810 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1811 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1812 -isystem <dir> Add <dir> to the start of the system include path\n\
1815 -idirafter <dir> Add <dir> to the end of the system include path\n\
1816 -I <dir> Add <dir> to the end of the main include path\n\
1817 -I- Fine-grained include path control; see info docs\n\
1818 -nostdinc Do not search system include directories\n\
1819 (dirs specified with -isystem will still be used)\n\
1820 -nostdinc++ Do not search system include directories for C++\n\
1821 -o <file> Put output into <file>\n\
1824 -pedantic Issue all warnings demanded by strict ISO C\n\
1825 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1826 -trigraphs Support ISO C trigraphs\n\
1827 -lang-c Assume that the input sources are in C\n\
1828 -lang-c89 Assume that the input sources are in C89\n\
1831 -lang-c++ Assume that the input sources are in C++\n\
1832 -lang-objc Assume that the input sources are in ObjectiveC\n\
1833 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1834 -lang-asm Assume that the input sources are in assembler\n\
1837 -std=<std name> Specify the conformance standard; one of:\n\
1838 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1839 iso9899:199409, iso9899:1999\n\
1840 -+ Allow parsing of C++ style features\n\
1841 -w Inhibit warning messages\n\
1842 -Wtrigraphs Warn if trigraphs are encountered\n\
1843 -Wno-trigraphs Do not warn about trigraphs\n\
1844 -Wcomment{s} Warn if one comment starts inside another\n\
1847 -Wno-comment{s} Do not warn about comments\n\
1848 -Wtraditional Warn about features not present in traditional C\n\
1849 -Wno-traditional Do not warn about traditional C\n\
1850 -Wundef Warn if an undefined macro is used by #if\n\
1851 -Wno-undef Do not warn about testing undefined macros\n\
1852 -Wimport Warn about the use of the #import directive\n\
1855 -Wno-import Do not warn about the use of #import\n\
1856 -Werror Treat all warnings as errors\n\
1857 -Wno-error Do not treat warnings as errors\n\
1858 -Wsystem-headers Do not suppress warnings from system headers\n\
1859 -Wno-system-headers Suppress warnings from system headers\n\
1860 -Wall Enable all preprocessor warnings\n\
1863 -M Generate make dependencies\n\
1864 -MM As -M, but ignore system header files\n\
1865 -MF <file> Write dependency output to the given file\n\
1866 -MG Treat missing header file as generated files\n\
1869 -MP Generate phony targets for all headers\n\
1870 -MQ <target> Add a MAKE-quoted target\n\
1871 -MT <target> Add an unquoted target\n\
1874 -D<macro> Define a <macro> with string '1' as its value\n\
1875 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1876 -A<question> (<answer>) Assert the <answer> to <question>\n\
1877 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1878 -U<macro> Undefine <macro> \n\
1879 -v Display the version number\n\
1882 -H Print the name of header files as they are used\n\
1883 -C Do not discard comments\n\
1884 -dM Display a list of macro definitions active at end\n\
1885 -dD Preserve macro definitions in output\n\
1886 -dN As -dD except that only the names are preserved\n\
1887 -dI Include #include directives in the output\n\
1890 -fpreprocessed Treat the input file as already preprocessed\n\
1891 -ftabstop=<number> Distance between tab stops for column reporting\n\
1892 -P Do not generate #line directives\n\
1893 -$ Do not allow '$' in identifiers\n\
1894 -remap Remap file names when including files.\n\
1895 --version Display version information\n\
1896 -h or --help Display this information\n\