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;
512 /* SDCC _asm specific */
513 CPP_OPTION (pfile, preproc_asm) = 1;
515 CPP_OPTION (pfile, pending) =
516 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
518 /* It's simplest to just create this struct whether or not it will
520 pfile->deps = deps_init ();
522 /* Initialize lexer state. */
523 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
525 /* Indicate date and time not yet calculated. */
526 pfile->date.type = CPP_EOF;
528 /* Initialise the base context. */
529 pfile->context = &pfile->base_context;
530 pfile->base_context.macro = 0;
531 pfile->base_context.prev = pfile->base_context.next = 0;
533 /* Identifier pool initially 8K. Unaligned, permanent pool. */
534 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
536 /* Argument pool initially 8K. Aligned, temporary pool. */
537 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
539 /* Macro pool initially 8K. Aligned, permanent pool. */
540 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
542 /* Initialise the buffer obstack. */
543 gcc_obstack_init (&pfile->buffer_ob);
545 /* Initialise the hashtable. */
546 _cpp_init_hashtable (pfile, table);
548 _cpp_init_directives (pfile);
549 _cpp_init_includes (pfile);
550 _cpp_init_internal_pragmas (pfile);
552 /* Initialize the special nodes. */
553 s = &pfile->spec_nodes;
554 s->n_L = cpp_lookup (pfile, DSC("L"));
555 s->n_defined = cpp_lookup (pfile, DSC("defined"));
556 s->n_true = cpp_lookup (pfile, DSC("true"));
557 s->n_false = cpp_lookup (pfile, DSC("false"));
558 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
559 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
560 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
561 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
562 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
563 /* SDCC _asm specific */
564 s->n__asm = cpp_lookup (pfile, DSC("_asm"));
569 /* Free resources used by PFILE. Accessing PFILE after this function
570 returns leads to undefined behaviour. */
576 struct search_path *dir, *dirn;
577 cpp_context *context, *contextn;
579 while (CPP_BUFFER (pfile) != NULL)
580 cpp_pop_buffer (pfile);
582 if (pfile->macro_buffer)
584 free ((PTR) pfile->macro_buffer);
585 pfile->macro_buffer = NULL;
586 pfile->macro_buffer_len = 0;
589 deps_free (pfile->deps);
590 obstack_free (&pfile->buffer_ob, 0);
592 _cpp_destroy_hashtable (pfile);
593 _cpp_cleanup_includes (pfile);
594 _cpp_free_lookaheads (pfile);
596 _cpp_free_pool (&pfile->ident_pool);
597 _cpp_free_pool (&pfile->macro_pool);
598 _cpp_free_pool (&pfile->argument_pool);
600 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
603 free ((PTR) dir->name);
607 for (context = pfile->base_context.next; context; context = contextn)
609 contextn = context->next;
613 result = pfile->errors;
620 /* This structure defines one built-in identifier. A node will be
621 entered in the hash table under the name NAME, with value VALUE (if
622 any). If flags has OPERATOR, the node's operator field is used; if
623 flags has BUILTIN the node's builtin field is used. Macros that are
624 known at build time should not be flagged BUILTIN, as then they do
625 not appear in macro dumps with e.g. -dM or -dD.
627 Two values are not compile time constants, so we tag
628 them in the FLAGS field instead:
629 VERS value is the global version_string, quoted
630 ULP value is the global user_label_prefix
632 Also, macros with CPLUS set in the flags field are entered only for C++. */
638 unsigned char builtin;
639 unsigned char operator;
640 unsigned short flags;
647 #define OPERATOR 0x10
649 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
650 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
651 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
652 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
653 static const struct builtin builtin_array[] =
655 B("__TIME__", BT_TIME),
656 B("__DATE__", BT_DATE),
657 B("__FILE__", BT_FILE),
658 B("__BASE_FILE__", BT_BASE_FILE),
659 B("__LINE__", BT_SPECLINE),
660 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
662 X("__VERSION__", VERS),
663 X("__USER_LABEL_PREFIX__", ULP),
664 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
665 C("__HAVE_BUILTIN_SETJMP__", "1"),
666 #ifndef NO_BUILTIN_SIZE_TYPE
667 C("__SIZE_TYPE__", SIZE_TYPE),
669 #ifndef NO_BUILTIN_PTRDIFF_TYPE
670 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
672 #ifndef NO_BUILTIN_WCHAR_TYPE
673 C("__WCHAR_TYPE__", WCHAR_TYPE),
675 #ifndef NO_BUILTIN_WINT_TYPE
676 C("__WINT_TYPE__", WINT_TYPE),
678 #ifdef STDC_0_IN_SYSTEM_HEADERS
679 B("__STDC__", BT_STDC),
684 /* Named operators known to the preprocessor. These cannot be #defined
685 and always have their stated meaning. They are treated like normal
686 identifiers except for the type code and the meaning. Most of them
687 are only for C++ (but see iso646.h). */
688 O("and", CPP_AND_AND, CPLUS),
689 O("and_eq", CPP_AND_EQ, CPLUS),
690 O("bitand", CPP_AND, CPLUS),
691 O("bitor", CPP_OR, CPLUS),
692 O("compl", CPP_COMPL, CPLUS),
693 O("not", CPP_NOT, CPLUS),
694 O("not_eq", CPP_NOT_EQ, CPLUS),
695 O("or", CPP_OR_OR, CPLUS),
696 O("or_eq", CPP_OR_EQ, CPLUS),
697 O("xor", CPP_XOR, CPLUS),
698 O("xor_eq", CPP_XOR_EQ, CPLUS)
704 #define builtin_array_end \
705 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
707 /* Subroutine of cpp_start_read; reads the builtins table above and
708 enters the macros into the hash table. */
710 init_builtins (pfile)
713 const struct builtin *b;
715 for(b = builtin_array; b < builtin_array_end; b++)
717 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
720 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
723 if (b->flags & (OPERATOR | BUILTIN))
725 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
726 if (b->flags & OPERATOR)
728 hp->flags |= NODE_OPERATOR;
729 hp->value.operator = b->operator;
734 hp->flags |= NODE_BUILTIN | NODE_WARN;
735 hp->value.builtin = b->builtin;
738 else /* A standard macro of some kind. */
745 /* Allocate enough space for 'name "value"\n\0'. */
746 str = alloca (b->len + strlen (version_string) + 5);
747 sprintf (str, "%s \"%s\"\n", b->name, version_string);
752 val = CPP_OPTION (pfile, user_label_prefix);
756 /* Allocate enough space for "name value\n\0". */
757 str = alloca (b->len + strlen (val) + 3);
758 sprintf(str, "%s %s\n", b->name, val);
761 _cpp_define_builtin (pfile, str);
765 if (CPP_OPTION (pfile, cplusplus))
767 _cpp_define_builtin (pfile, "__cplusplus 1");
768 if (SUPPORTS_ONE_ONLY)
769 _cpp_define_builtin (pfile, "__GXX_WEAK__ 1");
771 _cpp_define_builtin (pfile, "__GXX_WEAK__ 0");
773 if (CPP_OPTION (pfile, objc))
774 _cpp_define_builtin (pfile, "__OBJC__ 1");
776 if (CPP_OPTION (pfile, lang) == CLK_STDC94)
777 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
778 else if (CPP_OPTION (pfile, c99))
779 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
781 if (CPP_OPTION (pfile, lang) == CLK_STDC89
782 || CPP_OPTION (pfile, lang) == CLK_STDC94
783 || CPP_OPTION (pfile, lang) == CLK_STDC99)
784 _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1");
785 else if (CPP_OPTION (pfile, lang) == CLK_ASM)
786 _cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
793 #undef builtin_array_end
795 /* And another subroutine. This one sets up the standard include path. */
797 init_standard_includes (pfile)
801 const struct default_include *p;
802 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
804 /* Several environment variables may add to the include search path.
805 CPATH specifies an additional list of directories to be searched
806 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
807 etc. specify an additional list of directories to be searched as
808 if specified with -isystem, for the language indicated. */
810 GET_ENV_PATH_LIST (path, "CPATH");
811 if (path != 0 && *path != 0)
812 path_include (pfile, path, BRACKET);
814 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
817 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
820 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
823 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
826 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
829 if (path != 0 && *path != 0)
830 path_include (pfile, path, SYSTEM);
832 /* Search "translated" versions of GNU directories.
833 These have /usr/local/lib/gcc... replaced by specd_prefix. */
834 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
836 /* Remove the `include' from /usr/local/lib/gcc.../include.
837 GCC_INCLUDE_DIR will always end in /include. */
838 int default_len = cpp_GCC_INCLUDE_DIR_len;
839 char *default_prefix = (char *) alloca (default_len + 1);
840 int specd_len = strlen (specd_prefix);
842 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
843 default_prefix[default_len] = '\0';
845 for (p = cpp_include_defaults; p->fname; p++)
847 /* Some standard dirs are only for C++. */
849 || (CPP_OPTION (pfile, cplusplus)
850 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
852 /* Does this dir start with the prefix? */
853 if (!memcmp (p->fname, default_prefix, default_len))
855 /* Yes; change prefix and add to search list. */
856 int flen = strlen (p->fname);
857 int this_len = specd_len + flen - default_len;
858 char *str = (char *) xmalloc (this_len + 1);
859 memcpy (str, specd_prefix, specd_len);
860 memcpy (str + specd_len,
861 p->fname + default_len,
862 flen - default_len + 1);
864 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
870 /* Search ordinary names for GNU include directories. */
871 for (p = cpp_include_defaults; p->fname; p++)
873 /* Some standard dirs are only for C++. */
875 || (CPP_OPTION (pfile, cplusplus)
876 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
878 char *str = xstrdup (update_path (p->fname, p->component));
879 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
884 /* Handles -imacro and -include from the command line. */
886 do_includes (pfile, p, scan)
888 struct pending_option *p;
893 struct pending_option *q;
895 /* Don't handle if -fpreprocessed. Later: maybe update this to
896 use the #include "" search path if cpp_read_file fails. */
897 if (CPP_OPTION (pfile, preprocessed))
898 cpp_error (pfile, "-include and -imacros cannot be used with -fpreprocessed");
902 header.type = CPP_STRING;
903 header.val.str.text = (const unsigned char *) p->arg;
904 header.val.str.len = strlen (p->arg);
905 if (_cpp_execute_include (pfile, &header, IT_CMDLINE) && scan)
906 cpp_scan_buffer_nooutput (pfile, 0);
914 /* This is called after options have been processed. Setup for
915 processing input from the file named FNAME, or stdin if it is the
916 empty string. Return 1 on success, 0 on failure. */
918 cpp_start_read (pfile, fname)
922 struct pending_option *p, *q;
924 /* Set up the include search path now. */
925 if (! CPP_OPTION (pfile, no_standard_includes))
926 init_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 search_path *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 if (CPP_OPTION (pfile, print_deps))
945 /* Set the default target (if there is none already). */
946 deps_add_default_target (pfile->deps, fname);
948 /* Open the main input file. This must be done early, so we have a
949 buffer to stand on. */
950 if (!_cpp_read_file (pfile, fname))
953 /* If already preprocessed, don't install __LINE__, etc., and ignore
954 command line definitions and assertions. Handle -U's, -D's and
955 -A's in the order they were seen. */
956 if (! CPP_OPTION (pfile, preprocessed))
957 init_builtins (pfile);
959 p = CPP_OPTION (pfile, pending)->directive_head;
962 if (! CPP_OPTION (pfile, preprocessed))
963 (*p->handler) (pfile, p->arg);
969 /* The -imacros files can be scanned now, but the -include files
970 have to be pushed onto the buffer stack and processed later,
971 otherwise cppmain.c won't see the tokens. include_head was built
972 up as a stack, and popping this stack onto the buffer stack means
973 we preserve the order of the command line. */
974 do_includes (pfile, CPP_OPTION (pfile, pending)->imacros_head, 1);
975 do_includes (pfile, CPP_OPTION (pfile, pending)->include_head, 0);
977 free (CPP_OPTION (pfile, pending));
978 CPP_OPTION (pfile, pending) = NULL;
983 /* Use mkdeps.c to output dependency information. */
988 /* Stream on which to print the dependency information. */
989 FILE *deps_stream = 0;
990 const char *deps_mode = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
992 if (CPP_OPTION (pfile, deps_file) == 0)
993 deps_stream = stdout;
996 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
997 if (deps_stream == 0)
999 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
1004 deps_write (pfile->deps, deps_stream, 72);
1006 if (CPP_OPTION (pfile, deps_phony_targets))
1007 deps_phony_targets (pfile->deps, deps_stream);
1009 /* Don't close stdout. */
1010 if (CPP_OPTION (pfile, deps_file))
1012 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1013 cpp_fatal (pfile, "I/O error on output");
1017 /* This is called at the end of preprocessing. It pops the
1018 last buffer and writes dependency output. It should also
1019 clear macro definitions, such that you could call cpp_start_read
1020 with a new filename to restart processing. */
1025 if (CPP_BUFFER (pfile))
1027 cpp_ice (pfile, "buffers still stacked in cpp_finish");
1028 while (CPP_BUFFER (pfile))
1029 cpp_pop_buffer (pfile);
1032 /* Don't write the deps file if preprocessing has failed. */
1033 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1034 output_deps (pfile);
1036 /* Report on headers that could use multiple include guards. */
1037 if (CPP_OPTION (pfile, print_include_names))
1038 _cpp_report_missing_guards (pfile);
1042 new_pending_directive (pend, text, handler)
1043 struct cpp_pending *pend;
1045 cl_directive_handler handler;
1047 struct pending_option *o = (struct pending_option *)
1048 xmalloc (sizeof (struct pending_option));
1052 o->handler = handler;
1053 APPEND (pend, directive, o);
1056 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1057 I.e. a const string initializer with parens around it. That is
1058 what N_("string") resolves to, so we make no_* be macros instead. */
1059 #define no_arg N_("Argument missing after %s")
1060 #define no_ass N_("Assertion missing after %s")
1061 #define no_dir N_("Directory name missing after %s")
1062 #define no_fil N_("File name missing after %s")
1063 #define no_mac N_("Macro name missing after %s")
1064 #define no_pth N_("Path name missing after %s")
1065 #define no_num N_("Number missing after %s")
1066 #define no_tgt N_("Target missing after %s")
1068 /* This is the list of all command line options, with the leading
1069 "-" removed. It must be sorted in ASCII collating order. */
1070 #define COMMAND_LINE_OPTIONS \
1071 DEF_OPT("$", 0, OPT_dollar) \
1072 DEF_OPT("+", 0, OPT_plus) \
1073 DEF_OPT("-help", 0, OPT__help) \
1074 DEF_OPT("-target-help", 0, OPT_target__help) \
1075 DEF_OPT("-version", 0, OPT__version) \
1076 DEF_OPT("A", no_ass, OPT_A) \
1077 DEF_OPT("C", 0, OPT_C) \
1078 DEF_OPT("D", no_mac, OPT_D) \
1079 DEF_OPT("H", 0, OPT_H) \
1080 DEF_OPT("I", no_dir, OPT_I) \
1081 DEF_OPT("M", 0, OPT_M) \
1082 DEF_OPT("MD", no_fil, OPT_MD) \
1083 DEF_OPT("MF", no_fil, OPT_MF) \
1084 DEF_OPT("MG", 0, OPT_MG) \
1085 DEF_OPT("MM", 0, OPT_MM) \
1086 DEF_OPT("MMD", no_fil, OPT_MMD) \
1087 DEF_OPT("MP", 0, OPT_MP) \
1088 DEF_OPT("MQ", no_tgt, OPT_MQ) \
1089 DEF_OPT("MT", no_tgt, OPT_MT) \
1090 DEF_OPT("P", 0, OPT_P) \
1091 DEF_OPT("U", no_mac, OPT_U) \
1092 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1093 DEF_OPT("d", no_arg, OPT_d) \
1094 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1095 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1096 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1097 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1098 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1099 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1100 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1101 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1102 DEF_OPT("h", 0, OPT_h) \
1103 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1104 DEF_OPT("imacros", no_fil, OPT_imacros) \
1105 DEF_OPT("include", no_fil, OPT_include) \
1106 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1107 DEF_OPT("isystem", no_dir, OPT_isystem) \
1108 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1109 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1110 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1111 DEF_OPT("lang-c", 0, OPT_lang_c) \
1112 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1113 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1114 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1115 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1116 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1117 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1118 DEF_OPT("o", no_fil, OPT_o) \
1119 DEF_OPT("pedantic", 0, OPT_pedantic) \
1120 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1121 DEF_OPT("remap", 0, OPT_remap) \
1122 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1123 DEF_OPT("std=c89", 0, OPT_std_c89) \
1124 DEF_OPT("std=c99", 0, OPT_std_c99) \
1125 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1126 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1127 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1128 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1129 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1130 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1131 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1132 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1133 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1134 DEF_OPT("v", 0, OPT_v) \
1135 DEF_OPT("version", 0, OPT_version) \
1136 DEF_OPT("w", 0, OPT_w)
1138 #define DEF_OPT(text, msg, code) code,
1141 COMMAND_LINE_OPTIONS
1148 const char *opt_text;
1151 enum opt_code opt_code;
1154 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1156 static struct cl_option cl_options[] =
1158 static const struct cl_option cl_options[] =
1161 COMMAND_LINE_OPTIONS
1164 #undef COMMAND_LINE_OPTIONS
1166 /* Perform a binary search to find which, if any, option the given
1167 command-line matches. Returns its index in the option array,
1168 negative on failure. Complications arise since some options can be
1169 suffixed with an argument, and multiple complete matches can occur,
1170 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to
1171 accept options beginning with -W that we do not recognise, but not
1172 to swallow any subsequent command line argument; this is handled as
1173 special cases in cpp_handle_option. */
1175 parse_option (input)
1178 unsigned int md, mn, mx;
1189 opt_len = cl_options[md].opt_len;
1190 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1198 if (input[opt_len] == '\0')
1200 /* We were passed more text. If the option takes an argument,
1201 we may match a later option or we may have been passed the
1202 argument. The longest possible option match succeeds.
1203 If the option takes no arguments we have not matched and
1204 continue the search (e.g. input="stdc++" match was "stdc"). */
1206 if (cl_options[md].msg)
1208 /* Scan forwards. If we get an exact match, return it.
1209 Otherwise, return the longest option-accepting match.
1210 This loops no more than twice with current options. */
1212 for (; mn < (unsigned int) N_OPTS; mn++)
1214 opt_len = cl_options[mn].opt_len;
1215 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1217 if (input[opt_len] == '\0')
1219 if (cl_options[mn].msg)
1230 /* Handle one command-line option in (argc, argv).
1231 Can be called multiple times, to handle multiple sets of options.
1232 Returns number of strings consumed. */
1235 cpp_handle_option (pfile, argc, argv)
1241 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1243 /* Interpret "-" or a non-option as a file name. */
1244 if (argv[i][0] != '-' || argv[i][1] == '\0')
1246 if (CPP_OPTION (pfile, in_fname) == NULL)
1247 CPP_OPTION (pfile, in_fname) = argv[i];
1248 else if (CPP_OPTION (pfile, out_fname) == NULL)
1249 CPP_OPTION (pfile, out_fname) = argv[i];
1251 cpp_fatal (pfile, "Too many filenames. Type %s --help for usage info",
1256 enum opt_code opt_code;
1258 const char *arg = 0;
1260 /* Skip over '-'. */
1261 opt_index = parse_option (&argv[i][1]);
1265 opt_code = cl_options[opt_index].opt_code;
1266 if (cl_options[opt_index].msg)
1268 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1270 /* Yuk. Special case for -W as it must not swallow
1271 up any following argument. If this becomes common, add
1272 another field to the cl_options table. */
1273 if (arg[0] == '\0' && opt_code != OPT_W)
1278 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1286 case N_OPTS: /* Shut GCC up. */
1288 case OPT_fleading_underscore:
1289 CPP_OPTION (pfile, user_label_prefix) = "_";
1291 case OPT_fno_leading_underscore:
1292 CPP_OPTION (pfile, user_label_prefix) = "";
1294 case OPT_fno_operator_names:
1295 CPP_OPTION (pfile, operator_names) = 0;
1297 case OPT_fpreprocessed:
1298 CPP_OPTION (pfile, preprocessed) = 1;
1300 case OPT_fno_preprocessed:
1301 CPP_OPTION (pfile, preprocessed) = 0;
1303 case OPT_fshow_column:
1304 CPP_OPTION (pfile, show_column) = 1;
1306 case OPT_fno_show_column:
1307 CPP_OPTION (pfile, show_column) = 0;
1310 /* Silently ignore empty string, non-longs and silly values. */
1314 long tabstop = strtol (arg, &endptr, 10);
1315 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1316 CPP_OPTION (pfile, tabstop) = tabstop;
1320 CPP_OPTION (pfile, inhibit_warnings) = 1;
1325 CPP_OPTION (pfile, help_only) = 1;
1327 case OPT_target__help:
1328 /* Print if any target specific options. cpplib has none, but
1329 make sure help_only gets set. */
1330 CPP_OPTION (pfile, help_only) = 1;
1333 /* --version inhibits compilation, -version doesn't. -v means
1334 verbose and -version. Historical reasons, don't ask. */
1336 CPP_OPTION (pfile, help_only) = 1;
1337 pfile->print_version = 1;
1340 CPP_OPTION (pfile, verbose) = 1;
1341 pfile->print_version = 1;
1344 pfile->print_version = 1;
1348 CPP_OPTION (pfile, discard_comments) = 0;
1351 CPP_OPTION (pfile, no_line_commands) = 1;
1353 case OPT_dollar: /* Don't include $ in identifiers. */
1354 CPP_OPTION (pfile, dollars_in_ident) = 0;
1357 CPP_OPTION (pfile, print_include_names) = 1;
1360 new_pending_directive (pend, arg, cpp_define);
1362 case OPT_pedantic_errors:
1363 CPP_OPTION (pfile, pedantic_errors) = 1;
1366 CPP_OPTION (pfile, pedantic) = 1;
1369 CPP_OPTION (pfile, trigraphs) = 1;
1372 CPP_OPTION (pfile, cplusplus) = 1;
1373 CPP_OPTION (pfile, cplusplus_comments) = 1;
1376 CPP_OPTION (pfile, remap) = 1;
1379 CPP_OPTION (pfile, include_prefix) = arg;
1380 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1383 set_lang (pfile, CLK_GNUC89);
1385 case OPT_lang_cplusplus:
1386 set_lang (pfile, CLK_GNUCXX);
1389 set_lang (pfile, CLK_OBJC);
1391 case OPT_lang_objcplusplus:
1392 set_lang (pfile, CLK_OBJCXX);
1395 set_lang (pfile, CLK_ASM);
1397 case OPT_std_cplusplus98:
1398 set_lang (pfile, CLK_CXX98);
1401 set_lang (pfile, CLK_GNUC89);
1405 set_lang (pfile, CLK_GNUC99);
1407 case OPT_std_iso9899_199409:
1408 set_lang (pfile, CLK_STDC94);
1410 case OPT_std_iso9899_1990:
1413 set_lang (pfile, CLK_STDC89);
1415 case OPT_std_iso9899_199x:
1416 case OPT_std_iso9899_1999:
1419 set_lang (pfile, CLK_STDC99);
1422 /* -nostdinc causes no default include directories.
1423 You must specify all include-file directories with -I. */
1424 CPP_OPTION (pfile, no_standard_includes) = 1;
1426 case OPT_nostdincplusplus:
1427 /* -nostdinc++ causes no default C++-specific include directories. */
1428 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1431 if (CPP_OPTION (pfile, out_fname) == NULL)
1432 CPP_OPTION (pfile, out_fname) = arg;
1435 cpp_fatal (pfile, "Output filename specified twice");
1440 /* Args to -d specify what parts of macros to dump.
1441 Silently ignore unrecognised options; they may
1442 be aimed at the compiler proper. */
1446 while ((c = *arg++) != '\0')
1450 CPP_OPTION (pfile, dump_macros) = dump_only;
1451 CPP_OPTION (pfile, no_output) = 1;
1454 CPP_OPTION (pfile, dump_macros) = dump_names;
1457 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1460 CPP_OPTION (pfile, dump_includes) = 1;
1467 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1470 CPP_OPTION (pfile, print_deps) = 2;
1473 CPP_OPTION (pfile, print_deps) = 1;
1476 CPP_OPTION (pfile, deps_file) = arg;
1479 CPP_OPTION (pfile, deps_phony_targets) = 1;
1483 /* Add a target. -MQ quotes for Make. */
1484 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1487 /* -MD and -MMD for cpp0 are deprecated and undocumented
1488 (use -M or -MM with -MF instead), and probably should be
1489 removed with the next major GCC version. For the moment
1490 we allow these for the benefit of Automake 1.4, which
1491 uses these when dependency tracking is enabled. Automake
1492 1.5 will fix this. */
1494 CPP_OPTION (pfile, print_deps) = 2;
1495 CPP_OPTION (pfile, deps_file) = arg;
1498 CPP_OPTION (pfile, print_deps) = 1;
1499 CPP_OPTION (pfile, deps_file) = arg;
1505 /* -A with an argument beginning with '-' acts as
1506 #unassert on whatever immediately follows the '-'.
1507 If "-" is the whole argument, we eliminate all
1508 predefined macros and assertions, including those
1509 that were specified earlier on the command line.
1510 That way we can get rid of any that were passed
1511 automatically in from GCC. */
1515 struct pending_option *o1, *o2;
1517 o1 = pend->directive_head;
1524 pend->directive_head = NULL;
1525 pend->directive_tail = NULL;
1528 new_pending_directive (pend, arg + 1, cpp_unassert);
1531 new_pending_directive (pend, arg, cpp_assert);
1534 new_pending_directive (pend, arg, cpp_undef);
1536 case OPT_I: /* Add directory to path for includes. */
1537 if (!strcmp (arg, "-"))
1540 Use the preceding -I directories for #include "..."
1541 but not #include <...>.
1542 Don't search the directory of the present file
1543 for #include "...". (Note that -I. -I- is not the same as
1544 the default setup; -I. uses the compiler's working dir.) */
1545 if (! CPP_OPTION (pfile, ignore_srcdir))
1547 pend->quote_head = pend->brack_head;
1548 pend->quote_tail = pend->brack_tail;
1549 pend->brack_head = 0;
1550 pend->brack_tail = 0;
1551 CPP_OPTION (pfile, ignore_srcdir) = 1;
1555 cpp_fatal (pfile, "-I- specified twice");
1560 append_include_chain (pfile, (char *)xstrdup(arg), BRACKET, 0);
1563 /* Add directory to beginning of system include path, as a system
1564 include directory. */
1565 append_include_chain (pfile, (char *)xstrdup(arg), SYSTEM, 0);
1569 struct pending_option *o = (struct pending_option *)
1570 xmalloc (sizeof (struct pending_option));
1573 /* This list has to be built in reverse order so that
1574 when cpp_start_read pushes all the -include files onto
1575 the buffer stack, they will be scanned in forward order. */
1576 o->next = pend->include_head;
1577 pend->include_head = o;
1582 struct pending_option *o = (struct pending_option *)
1583 xmalloc (sizeof (struct pending_option));
1587 APPEND (pend, imacros, o);
1590 case OPT_iwithprefix:
1591 /* Add directory to end of path for includes,
1592 with the default prefix at the front of its name. */
1594 case OPT_iwithprefixbefore:
1595 /* Add directory to main path for includes,
1596 with the default prefix at the front of its name. */
1603 if (CPP_OPTION (pfile, include_prefix) != 0)
1605 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1606 fname = xmalloc (ipl + len + 1);
1607 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1608 memcpy (fname + ipl, arg, len + 1);
1610 else if (cpp_GCC_INCLUDE_DIR_len)
1612 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1613 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1614 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1617 fname = xstrdup (arg);
1619 append_include_chain (pfile, fname,
1620 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1624 /* Add directory to end of path for includes. */
1625 append_include_chain (pfile, (char *)xstrdup (arg), AFTER, 0);
1628 /* Silently ignore unrecognised options. */
1629 if (!strcmp (argv[i], "-Wall"))
1631 CPP_OPTION (pfile, warn_trigraphs) = 1;
1632 CPP_OPTION (pfile, warn_comments) = 1;
1634 else if (!strcmp (argv[i], "-Wtraditional"))
1635 CPP_OPTION (pfile, warn_traditional) = 1;
1636 else if (!strcmp (argv[i], "-Wtrigraphs"))
1637 CPP_OPTION (pfile, warn_trigraphs) = 1;
1638 else if (!strcmp (argv[i], "-Wcomment"))
1639 CPP_OPTION (pfile, warn_comments) = 1;
1640 else if (!strcmp (argv[i], "-Wcomments"))
1641 CPP_OPTION (pfile, warn_comments) = 1;
1642 else if (!strcmp (argv[i], "-Wundef"))
1643 CPP_OPTION (pfile, warn_undef) = 1;
1644 else if (!strcmp (argv[i], "-Wimport"))
1645 CPP_OPTION (pfile, warn_import) = 1;
1646 else if (!strcmp (argv[i], "-Werror"))
1647 CPP_OPTION (pfile, warnings_are_errors) = 1;
1648 else if (!strcmp (argv[i], "-Wsystem-headers"))
1649 CPP_OPTION (pfile, warn_system_headers) = 1;
1650 else if (!strcmp (argv[i], "-Wno-traditional"))
1651 CPP_OPTION (pfile, warn_traditional) = 0;
1652 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1653 CPP_OPTION (pfile, warn_trigraphs) = 0;
1654 else if (!strcmp (argv[i], "-Wno-comment"))
1655 CPP_OPTION (pfile, warn_comments) = 0;
1656 else if (!strcmp (argv[i], "-Wno-comments"))
1657 CPP_OPTION (pfile, warn_comments) = 0;
1658 else if (!strcmp (argv[i], "-Wno-undef"))
1659 CPP_OPTION (pfile, warn_undef) = 0;
1660 else if (!strcmp (argv[i], "-Wno-import"))
1661 CPP_OPTION (pfile, warn_import) = 0;
1662 else if (!strcmp (argv[i], "-Wno-error"))
1663 CPP_OPTION (pfile, warnings_are_errors) = 0;
1664 else if (!strcmp (argv[i], "-Wno-system-headers"))
1665 CPP_OPTION (pfile, warn_system_headers) = 0;
1672 /* Handle command-line options in (argc, argv).
1673 Can be called multiple times, to handle multiple sets of options.
1674 Returns if an unrecognized option is seen.
1675 Returns number of strings consumed. */
1677 cpp_handle_options (pfile, argc, argv)
1683 int strings_processed;
1685 for (i = 0; i < argc; i += strings_processed)
1687 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1688 if (strings_processed == 0)
1695 /* Extra processing when all options are parsed, after all calls to
1696 cpp_handle_option[s]. Consistency checks etc. */
1698 cpp_post_options (pfile)
1701 if (pfile->print_version)
1703 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1704 #ifdef TARGET_VERSION
1707 fputc ('\n', stderr);
1710 /* Canonicalize in_fname and out_fname. We guarantee they are not
1711 NULL, and that the empty string represents stdin / stdout. */
1712 if (CPP_OPTION (pfile, in_fname) == NULL
1713 || !strcmp (CPP_OPTION (pfile, in_fname), "-"))
1714 CPP_OPTION (pfile, in_fname) = "";
1716 if (CPP_OPTION (pfile, out_fname) == NULL
1717 || !strcmp (CPP_OPTION (pfile, out_fname), "-"))
1718 CPP_OPTION (pfile, out_fname) = "";
1720 /* -Wtraditional is not useful in C++ mode. */
1721 if (CPP_OPTION (pfile, cplusplus))
1722 CPP_OPTION (pfile, warn_traditional) = 0;
1724 /* Set this if it hasn't been set already. */
1725 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1726 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1728 /* Permanently disable macro expansion if we are rescanning
1729 preprocessed text. */
1730 if (CPP_OPTION (pfile, preprocessed))
1731 pfile->state.prevent_expansion = 1;
1733 /* We need to do this after option processing and before
1734 cpp_start_read, as cppmain.c relies on the options->no_output to
1735 set its callbacks correctly before calling cpp_start_read. */
1736 init_dependency_output (pfile);
1738 /* After checking the environment variables, check if -M or -MM has
1739 not been specified, but other -M options have. */
1740 if (CPP_OPTION (pfile, print_deps) == 0 &&
1741 (CPP_OPTION (pfile, print_deps_missing_files)
1742 || CPP_OPTION (pfile, deps_file)
1743 || CPP_OPTION (pfile, deps_phony_targets)))
1744 cpp_fatal (pfile, "you must additionally specify either -M or -MM");
1747 /* Set up dependency-file output. */
1749 init_dependency_output (pfile)
1752 char *spec, *s, *output_file;
1754 /* Either of two environment variables can specify output of deps.
1755 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1756 where OUTPUT_FILE is the file to write deps info to
1757 and DEPS_TARGET is the target to mention in the deps. */
1759 if (CPP_OPTION (pfile, print_deps) == 0)
1761 spec = getenv ("DEPENDENCIES_OUTPUT");
1763 CPP_OPTION (pfile, print_deps) = 1;
1766 spec = getenv ("SUNPRO_DEPENDENCIES");
1768 CPP_OPTION (pfile, print_deps) = 2;
1773 /* Find the space before the DEPS_TARGET, if there is one. */
1774 s = strchr (spec, ' ');
1777 /* Let the caller perform MAKE quoting. */
1778 deps_add_target (pfile->deps, s + 1, 0);
1779 output_file = (char *) xmalloc (s - spec + 1);
1780 memcpy (output_file, spec, s - spec);
1781 output_file[s - spec] = 0;
1786 /* Command line overrides environment variables. */
1787 if (CPP_OPTION (pfile, deps_file) == 0)
1788 CPP_OPTION (pfile, deps_file) = output_file;
1789 CPP_OPTION (pfile, print_deps_append) = 1;
1792 /* If dependencies go to standard output, or -MG is used, we should
1793 suppress output. The user may be requesting other stuff to
1794 stdout, with -dM, -v etc. We let them shoot themselves in the
1796 if (CPP_OPTION (pfile, deps_file) == 0
1797 || CPP_OPTION (pfile, print_deps_missing_files))
1798 CPP_OPTION (pfile, no_output) = 1;
1804 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1805 /* To keep the lines from getting too long for some compilers, limit
1806 to about 500 characters (6 lines) per chunk. */
1809 -include <file> Include the contents of <file> before other files\n\
1810 -imacros <file> Accept definition of macros in <file>\n\
1811 -iprefix <path> Specify <path> as a prefix for next two options\n\
1812 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1813 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1814 -isystem <dir> Add <dir> to the start of the system include path\n\
1817 -idirafter <dir> Add <dir> to the end of the system include path\n\
1818 -I <dir> Add <dir> to the end of the main include path\n\
1819 -I- Fine-grained include path control; see info docs\n\
1820 -nostdinc Do not search system include directories\n\
1821 (dirs specified with -isystem will still be used)\n\
1822 -nostdinc++ Do not search system include directories for C++\n\
1823 -o <file> Put output into <file>\n\
1826 -pedantic Issue all warnings demanded by strict ISO C\n\
1827 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1828 -trigraphs Support ISO C trigraphs\n\
1829 -lang-c Assume that the input sources are in C\n\
1830 -lang-c89 Assume that the input sources are in C89\n\
1833 -lang-c++ Assume that the input sources are in C++\n\
1834 -lang-objc Assume that the input sources are in ObjectiveC\n\
1835 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1836 -lang-asm Assume that the input sources are in assembler\n\
1839 -std=<std name> Specify the conformance standard; one of:\n\
1840 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1841 iso9899:199409, iso9899:1999\n\
1842 -+ Allow parsing of C++ style features\n\
1843 -w Inhibit warning messages\n\
1844 -Wtrigraphs Warn if trigraphs are encountered\n\
1845 -Wno-trigraphs Do not warn about trigraphs\n\
1846 -Wcomment{s} Warn if one comment starts inside another\n\
1849 -Wno-comment{s} Do not warn about comments\n\
1850 -Wtraditional Warn about features not present in traditional C\n\
1851 -Wno-traditional Do not warn about traditional C\n\
1852 -Wundef Warn if an undefined macro is used by #if\n\
1853 -Wno-undef Do not warn about testing undefined macros\n\
1854 -Wimport Warn about the use of the #import directive\n\
1857 -Wno-import Do not warn about the use of #import\n\
1858 -Werror Treat all warnings as errors\n\
1859 -Wno-error Do not treat warnings as errors\n\
1860 -Wsystem-headers Do not suppress warnings from system headers\n\
1861 -Wno-system-headers Suppress warnings from system headers\n\
1862 -Wall Enable all preprocessor warnings\n\
1865 -M Generate make dependencies\n\
1866 -MM As -M, but ignore system header files\n\
1867 -MF <file> Write dependency output to the given file\n\
1868 -MG Treat missing header file as generated files\n\
1871 -MP Generate phony targets for all headers\n\
1872 -MQ <target> Add a MAKE-quoted target\n\
1873 -MT <target> Add an unquoted target\n\
1876 -D<macro> Define a <macro> with string '1' as its value\n\
1877 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1878 -A<question> (<answer>) Assert the <answer> to <question>\n\
1879 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1880 -U<macro> Undefine <macro> \n\
1881 -v Display the version number\n\
1884 -H Print the name of header files as they are used\n\
1885 -C Do not discard comments\n\
1886 -dM Display a list of macro definitions active at end\n\
1887 -dD Preserve macro definitions in output\n\
1888 -dN As -dD except that only the names are preserved\n\
1889 -dI Include #include directives in the output\n\
1892 -fpreprocessed Treat the input file as already preprocessed\n\
1893 -ftabstop=<number> Distance between tab stops for column reporting\n\
1894 -P Do not generate #line directives\n\
1895 -$ Do not allow '$' in identifiers\n\
1896 -remap Remap file names when including files.\n\
1897 --version Display version information\n\
1898 -h or --help Display this information\n\