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;
214 _cpp_simplify_pathname (dir);
217 /* Dirs that don't exist are silently ignored. */
219 cpp_notice_from_errno (pfile, dir);
220 else if (CPP_OPTION (pfile, verbose))
221 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
225 if (!S_ISDIR (st.st_mode))
227 cpp_notice (pfile, "%s: Not a directory", dir);
232 if (len > pfile->max_include_len)
233 pfile->max_include_len = len;
235 new = (struct search_path *) xmalloc (sizeof (struct search_path));
238 new->ino = st.st_ino;
239 new->dev = st.st_dev;
240 /* Both systm and after include file lists should be treated as system
241 include files since these two lists are really just a concatenation
242 of one "system" list. */
243 if (path == SYSTEM || path == AFTER)
244 #ifdef NO_IMPLICIT_EXTERN_C
247 new->sysp = cxx_aware ? 1 : 2;
251 new->name_map = NULL;
256 case BRACKET: APPEND (pend, brack, new); break;
257 case SYSTEM: APPEND (pend, systm, new); break;
258 case AFTER: APPEND (pend, after, new); break;
262 /* Handle a duplicated include path. PREV is the link in the chain
263 before the duplicate. The duplicate is removed from the chain and
264 freed. Returns PREV. */
266 remove_dup_dir (pfile, prev)
268 struct search_path *prev;
270 struct search_path *cur = prev->next;
272 if (CPP_OPTION (pfile, verbose))
273 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
275 prev->next = cur->next;
276 free ((PTR) cur->name);
282 /* Remove duplicate directories from a chain. Returns the tail of the
283 chain, or NULL if the chain is empty. This algorithm is quadratic
284 in the number of -I switches, which is acceptable since there
285 aren't usually that many of them. */
287 remove_dup_dirs (pfile, head)
289 struct search_path *head;
291 struct search_path *prev = NULL, *cur, *other;
293 for (cur = head; cur; cur = cur->next)
295 for (other = head; other != cur; other = other->next)
296 if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
298 cur = remove_dup_dir (pfile, prev);
307 /* Merge the four include chains together in the order quote, bracket,
308 system, after. Remove duplicate dirs (as determined by
309 INO_T_EQ()). The system_include and after_include chains are never
310 referred to again after this function; all access is through the
311 bracket_include path.
313 For the future: Check if the directory is empty (but
314 how?) and possibly preload the include hash. */
317 merge_include_chains (pfile)
320 struct search_path *quote, *brack, *systm, *qtail;
322 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
324 quote = pend->quote_head;
325 brack = pend->brack_head;
326 systm = pend->systm_head;
327 qtail = pend->quote_tail;
329 /* Paste together bracket, system, and after include chains. */
331 pend->systm_tail->next = pend->after_head;
333 systm = pend->after_head;
336 pend->brack_tail->next = systm;
340 /* This is a bit tricky. First we drop dupes from the quote-include
341 list. Then we drop dupes from the bracket-include list.
342 Finally, if qtail and brack are the same directory, we cut out
343 brack and move brack up to point to qtail.
345 We can't just merge the lists and then uniquify them because
346 then we may lose directories from the <> search path that should
347 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
348 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
349 -Ibar -I- -Ifoo -Iquux. */
351 remove_dup_dirs (pfile, brack);
352 qtail = remove_dup_dirs (pfile, quote);
358 /* If brack == qtail, remove brack as it's simpler. */
359 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
360 brack = remove_dup_dir (pfile, qtail);
365 CPP_OPTION (pfile, quote_include) = quote;
366 CPP_OPTION (pfile, bracket_include) = brack;
369 /* Sets internal flags correctly for a given language, and defines
370 macros if necessary. */
372 set_lang (pfile, lang)
377 CPP_OPTION (pfile, lang) = lang;
378 CPP_OPTION (pfile, objc) = 0;
379 CPP_OPTION (pfile, cplusplus) = 0;
380 CPP_OPTION (pfile, extended_numbers) = 1; /* Allowed in GNU C and C99. */
386 CPP_OPTION (pfile, trigraphs) = 0;
387 CPP_OPTION (pfile, dollars_in_ident) = 1;
388 CPP_OPTION (pfile, cplusplus_comments) = 1;
389 CPP_OPTION (pfile, digraphs) = 1;
390 CPP_OPTION (pfile, c99) = 1;
393 CPP_OPTION (pfile, trigraphs) = 0;
394 CPP_OPTION (pfile, dollars_in_ident) = 1;
395 CPP_OPTION (pfile, cplusplus_comments) = 1;
396 CPP_OPTION (pfile, digraphs) = 1;
397 CPP_OPTION (pfile, c99) = 0;
403 CPP_OPTION (pfile, trigraphs) = 1;
404 CPP_OPTION (pfile, dollars_in_ident) = 0;
405 CPP_OPTION (pfile, cplusplus_comments) = 0;
406 CPP_OPTION (pfile, digraphs) = lang == CLK_STDC94;
407 CPP_OPTION (pfile, c99) = 0;
408 CPP_OPTION (pfile, extended_numbers) = 0;
411 CPP_OPTION (pfile, trigraphs) = 1;
412 CPP_OPTION (pfile, dollars_in_ident) = 0;
413 CPP_OPTION (pfile, cplusplus_comments) = 1;
414 CPP_OPTION (pfile, digraphs) = 1;
415 CPP_OPTION (pfile, c99) = 1;
420 CPP_OPTION (pfile, cplusplus) = 1;
422 CPP_OPTION (pfile, trigraphs) = 0;
423 CPP_OPTION (pfile, dollars_in_ident) = 1;
424 CPP_OPTION (pfile, cplusplus_comments) = 1;
425 CPP_OPTION (pfile, digraphs) = 1;
426 CPP_OPTION (pfile, c99) = 0;
427 CPP_OPTION (pfile, objc) = 1;
433 CPP_OPTION (pfile, cplusplus) = 1;
434 CPP_OPTION (pfile, trigraphs) = lang == CLK_CXX98;
435 CPP_OPTION (pfile, dollars_in_ident) = lang == CLK_GNUCXX;
436 CPP_OPTION (pfile, cplusplus_comments) = 1;
437 CPP_OPTION (pfile, digraphs) = 1;
438 CPP_OPTION (pfile, c99) = 0;
443 CPP_OPTION (pfile, trigraphs) = 0;
444 CPP_OPTION (pfile, dollars_in_ident) = 0; /* Maybe not? */
445 CPP_OPTION (pfile, cplusplus_comments) = 1;
446 CPP_OPTION (pfile, digraphs) = 0;
447 CPP_OPTION (pfile, c99) = 0;
453 static int opt_comp PARAMS ((const void *, const void *));
455 /* Run-time sorting of options array. */
460 return strcmp (((struct cl_option *) p1)->opt_text,
461 ((struct cl_option *) p2)->opt_text);
465 /* init initializes library global state. It might not need to
466 do anything depending on the platform and compiler. */
471 static int initialized = 0;
478 /* For non-ASCII hosts, the cl_options array needs to be sorted at
480 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
483 /* Set up the trigraph map. This doesn't need to do anything if
484 we were compiled with a compiler that supports C99 designated
486 init_trigraph_map ();
490 /* Initialize a cpp_reader structure. */
492 cpp_create_reader (lang)
495 struct spec_nodes *s;
498 /* Initialise this instance of the library if it hasn't been already. */
501 pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
503 set_lang (pfile, lang);
504 CPP_OPTION (pfile, warn_import) = 1;
505 CPP_OPTION (pfile, discard_comments) = 1;
506 CPP_OPTION (pfile, show_column) = 1;
507 CPP_OPTION (pfile, tabstop) = 8;
508 CPP_OPTION (pfile, operator_names) = 1;
510 CPP_OPTION (pfile, pending) =
511 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
513 /* It's simplest to just create this struct whether or not it will
515 pfile->deps = deps_init ();
517 /* Initialize lexer state. */
518 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
520 /* Indicate date and time not yet calculated. */
521 pfile->date.type = CPP_EOF;
523 /* Initialise the base context. */
524 pfile->context = &pfile->base_context;
525 pfile->base_context.macro = 0;
526 pfile->base_context.prev = pfile->base_context.next = 0;
528 /* Identifier pool initially 8K. Unaligned, permanent pool. */
529 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
531 /* Argument pool initially 8K. Aligned, temporary pool. */
532 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
534 /* Macro pool initially 8K. Aligned, permanent pool. */
535 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
537 _cpp_init_hashtable (pfile);
538 _cpp_init_stacks (pfile);
539 _cpp_init_includes (pfile);
540 _cpp_init_internal_pragmas (pfile);
542 /* Initialize the special nodes. */
543 s = &pfile->spec_nodes;
544 s->n_L = cpp_lookup (pfile, DSC("L"));
545 s->n_defined = cpp_lookup (pfile, DSC("defined"));
546 s->n_true = cpp_lookup (pfile, DSC("true"));
547 s->n_false = cpp_lookup (pfile, DSC("false"));
548 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
549 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
550 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
551 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
552 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
557 /* Free resources used by PFILE. Accessing PFILE after this function
558 returns leads to undefined behaviour. */
564 struct search_path *dir, *dirn;
565 cpp_context *context, *contextn;
567 while (CPP_BUFFER (pfile) != NULL)
568 cpp_pop_buffer (pfile);
570 if (pfile->macro_buffer)
572 free ((PTR) pfile->macro_buffer);
573 pfile->macro_buffer = NULL;
574 pfile->macro_buffer_len = 0;
577 deps_free (pfile->deps);
579 _cpp_cleanup_includes (pfile);
580 _cpp_cleanup_stacks (pfile);
581 _cpp_cleanup_hashtable (pfile);
583 _cpp_free_lookaheads (pfile);
585 _cpp_free_pool (&pfile->ident_pool);
586 _cpp_free_pool (&pfile->macro_pool);
587 _cpp_free_pool (&pfile->argument_pool);
589 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
592 free ((PTR) dir->name);
596 for (context = pfile->base_context.next; context; context = contextn)
598 contextn = context->next;
602 result = pfile->errors;
609 /* This structure defines one built-in identifier. A node will be
610 entered in the hash table under the name NAME, with value VALUE (if
611 any). If flags has OPERATOR, the node's operator field is used; if
612 flags has BUILTIN the node's builtin field is used. Macros that are
613 known at build time should not be flagged BUILTIN, as then they do
614 not appear in macro dumps with e.g. -dM or -dD.
616 Two values are not compile time constants, so we tag
617 them in the FLAGS field instead:
618 VERS value is the global version_string, quoted
619 ULP value is the global user_label_prefix
621 Also, macros with CPLUS set in the flags field are entered only for C++. */
627 unsigned char builtin;
628 unsigned char operator;
629 unsigned short flags;
636 #define OPERATOR 0x10
638 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
639 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
640 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
641 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
642 static const struct builtin builtin_array[] =
644 B("__TIME__", BT_TIME),
645 B("__DATE__", BT_DATE),
646 B("__FILE__", BT_FILE),
647 B("__BASE_FILE__", BT_BASE_FILE),
648 B("__LINE__", BT_SPECLINE),
649 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
651 X("__VERSION__", VERS),
652 X("__USER_LABEL_PREFIX__", ULP),
653 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
654 C("__HAVE_BUILTIN_SETJMP__", "1"),
655 #ifndef NO_BUILTIN_SIZE_TYPE
656 C("__SIZE_TYPE__", SIZE_TYPE),
658 #ifndef NO_BUILTIN_PTRDIFF_TYPE
659 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
661 #ifndef NO_BUILTIN_WCHAR_TYPE
662 C("__WCHAR_TYPE__", WCHAR_TYPE),
664 #ifndef NO_BUILTIN_WINT_TYPE
665 C("__WINT_TYPE__", WINT_TYPE),
667 #ifdef STDC_0_IN_SYSTEM_HEADERS
668 B("__STDC__", BT_STDC),
673 /* Named operators known to the preprocessor. These cannot be #defined
674 and always have their stated meaning. They are treated like normal
675 identifiers except for the type code and the meaning. Most of them
676 are only for C++ (but see iso646.h). */
677 O("and", CPP_AND_AND, CPLUS),
678 O("and_eq", CPP_AND_EQ, CPLUS),
679 O("bitand", CPP_AND, CPLUS),
680 O("bitor", CPP_OR, CPLUS),
681 O("compl", CPP_COMPL, CPLUS),
682 O("not", CPP_NOT, CPLUS),
683 O("not_eq", CPP_NOT_EQ, CPLUS),
684 O("or", CPP_OR_OR, CPLUS),
685 O("or_eq", CPP_OR_EQ, CPLUS),
686 O("xor", CPP_XOR, CPLUS),
687 O("xor_eq", CPP_XOR_EQ, CPLUS)
693 #define builtin_array_end \
694 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
696 /* Subroutine of cpp_start_read; reads the builtins table above and
697 enters the macros into the hash table. */
699 init_builtins (pfile)
702 const struct builtin *b;
704 for(b = builtin_array; b < builtin_array_end; b++)
706 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
709 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
712 if (b->flags & (OPERATOR | BUILTIN))
714 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
715 if (b->flags & OPERATOR)
717 hp->flags |= NODE_OPERATOR;
718 hp->value.operator = b->operator;
723 hp->flags |= NODE_BUILTIN | NODE_WARN;
724 hp->value.builtin = b->builtin;
727 else /* A standard macro of some kind. */
734 /* Allocate enough space for 'name "value"\n\0'. */
735 str = alloca (b->len + strlen (version_string) + 5);
736 sprintf (str, "%s \"%s\"\n", b->name, version_string);
741 val = CPP_OPTION (pfile, user_label_prefix);
745 /* Allocate enough space for "name value\n\0". */
746 str = alloca (b->len + strlen (val) + 3);
747 sprintf(str, "%s %s\n", b->name, val);
750 _cpp_define_builtin (pfile, str);
754 if (CPP_OPTION (pfile, cplusplus))
756 _cpp_define_builtin (pfile, "__cplusplus 1");
757 if (SUPPORTS_ONE_ONLY)
758 _cpp_define_builtin (pfile, "__GXX_WEAK__ 1");
760 _cpp_define_builtin (pfile, "__GXX_WEAK__ 0");
762 if (CPP_OPTION (pfile, objc))
763 _cpp_define_builtin (pfile, "__OBJC__ 1");
765 if (CPP_OPTION (pfile, lang) == CLK_STDC94)
766 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
767 else if (CPP_OPTION (pfile, c99))
768 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
770 if (CPP_OPTION (pfile, lang) == CLK_STDC89
771 || CPP_OPTION (pfile, lang) == CLK_STDC94
772 || CPP_OPTION (pfile, lang) == CLK_STDC99)
773 _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1");
774 else if (CPP_OPTION (pfile, lang) == CLK_ASM)
775 _cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
782 #undef builtin_array_end
784 /* And another subroutine. This one sets up the standard include path. */
786 init_standard_includes (pfile)
790 const struct default_include *p;
791 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
793 /* Several environment variables may add to the include search path.
794 CPATH specifies an additional list of directories to be searched
795 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
796 etc. specify an additional list of directories to be searched as
797 if specified with -isystem, for the language indicated. */
799 GET_ENV_PATH_LIST (path, "CPATH");
800 if (path != 0 && *path != 0)
801 path_include (pfile, path, BRACKET);
803 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
806 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
809 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
812 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
815 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
818 if (path != 0 && *path != 0)
819 path_include (pfile, path, SYSTEM);
821 /* Search "translated" versions of GNU directories.
822 These have /usr/local/lib/gcc... replaced by specd_prefix. */
823 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
825 /* Remove the `include' from /usr/local/lib/gcc.../include.
826 GCC_INCLUDE_DIR will always end in /include. */
827 int default_len = cpp_GCC_INCLUDE_DIR_len;
828 char *default_prefix = (char *) alloca (default_len + 1);
829 int specd_len = strlen (specd_prefix);
831 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
832 default_prefix[default_len] = '\0';
834 for (p = cpp_include_defaults; p->fname; p++)
836 /* Some standard dirs are only for C++. */
838 || (CPP_OPTION (pfile, cplusplus)
839 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
841 /* Does this dir start with the prefix? */
842 if (!memcmp (p->fname, default_prefix, default_len))
844 /* Yes; change prefix and add to search list. */
845 int flen = strlen (p->fname);
846 int this_len = specd_len + flen - default_len;
847 char *str = (char *) xmalloc (this_len + 1);
848 memcpy (str, specd_prefix, specd_len);
849 memcpy (str + specd_len,
850 p->fname + default_len,
851 flen - default_len + 1);
853 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
859 /* Search ordinary names for GNU include directories. */
860 for (p = cpp_include_defaults; p->fname; p++)
862 /* Some standard dirs are only for C++. */
864 || (CPP_OPTION (pfile, cplusplus)
865 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
867 char *str = xstrdup (update_path (p->fname, p->component));
868 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
873 /* Handles -imacro and -include from the command line. */
875 do_includes (pfile, p, scan)
877 struct pending_option *p;
882 struct pending_option *q;
884 /* Don't handle if -fpreprocessed. Later: maybe update this to
885 use the #include "" search path if cpp_read_file fails. */
886 if (CPP_OPTION (pfile, preprocessed))
887 cpp_error (pfile, "-include and -imacros cannot be used with -fpreprocessed");
888 else if (_cpp_read_file (pfile, p->arg) && scan)
889 cpp_scan_buffer_nooutput (pfile, 0);
896 /* This is called after options have been processed. Setup for
897 processing input from the file named FNAME, or stdin if it is the
898 empty string. Return 1 on success, 0 on failure. */
900 cpp_start_read (pfile, fname)
904 struct pending_option *p, *q;
906 /* Set up the include search path now. */
907 if (! CPP_OPTION (pfile, no_standard_includes))
908 init_standard_includes (pfile);
910 merge_include_chains (pfile);
912 /* With -v, print the list of dirs to search. */
913 if (CPP_OPTION (pfile, verbose))
915 struct search_path *l;
916 fprintf (stderr, _("#include \"...\" search starts here:\n"));
917 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
919 if (l == CPP_OPTION (pfile, bracket_include))
920 fprintf (stderr, _("#include <...> search starts here:\n"));
921 fprintf (stderr, " %s\n", l->name);
923 fprintf (stderr, _("End of search list.\n"));
926 if (CPP_OPTION (pfile, print_deps))
927 /* Set the default target (if there is none already). */
928 deps_add_default_target (pfile->deps, fname);
930 /* Open the main input file. This must be done early, so we have a
931 buffer to stand on. */
932 if (!_cpp_read_file (pfile, fname))
935 /* If already preprocessed, don't install __LINE__, etc., and ignore
936 command line definitions and assertions. Handle -U's, -D's and
937 -A's in the order they were seen. */
938 if (! CPP_OPTION (pfile, preprocessed))
939 init_builtins (pfile);
941 p = CPP_OPTION (pfile, pending)->directive_head;
944 if (! CPP_OPTION (pfile, preprocessed))
945 (*p->handler) (pfile, p->arg);
951 /* The -imacros files can be scanned now, but the -include files
952 have to be pushed onto the buffer stack and processed later,
953 otherwise cppmain.c won't see the tokens. include_head was built
954 up as a stack, and popping this stack onto the buffer stack means
955 we preserve the order of the command line. */
956 do_includes (pfile, CPP_OPTION (pfile, pending)->imacros_head, 1);
957 do_includes (pfile, CPP_OPTION (pfile, pending)->include_head, 0);
959 free (CPP_OPTION (pfile, pending));
960 CPP_OPTION (pfile, pending) = NULL;
965 /* Use mkdeps.c to output dependency information. */
970 /* Stream on which to print the dependency information. */
971 FILE *deps_stream = 0;
972 const char *deps_mode = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
974 if (CPP_OPTION (pfile, deps_file) == 0)
975 deps_stream = stdout;
978 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
979 if (deps_stream == 0)
981 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
986 deps_write (pfile->deps, deps_stream, 72);
988 if (CPP_OPTION (pfile, deps_phony_targets))
989 deps_phony_targets (pfile->deps, deps_stream);
991 /* Don't close stdout. */
992 if (CPP_OPTION (pfile, deps_file))
994 if (ferror (deps_stream) || fclose (deps_stream) != 0)
995 cpp_fatal (pfile, "I/O error on output");
999 /* This is called at the end of preprocessing. It pops the
1000 last buffer and writes dependency output. It should also
1001 clear macro definitions, such that you could call cpp_start_read
1002 with a new filename to restart processing. */
1007 if (CPP_BUFFER (pfile))
1009 cpp_ice (pfile, "buffers still stacked in cpp_finish");
1010 while (CPP_BUFFER (pfile))
1011 cpp_pop_buffer (pfile);
1014 /* Don't write the deps file if preprocessing has failed. */
1015 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1016 output_deps (pfile);
1018 /* Report on headers that could use multiple include guards. */
1019 if (CPP_OPTION (pfile, print_include_names))
1020 _cpp_report_missing_guards (pfile);
1024 new_pending_directive (pend, text, handler)
1025 struct cpp_pending *pend;
1027 cl_directive_handler handler;
1029 struct pending_option *o = (struct pending_option *)
1030 xmalloc (sizeof (struct pending_option));
1034 o->handler = handler;
1035 APPEND (pend, directive, o);
1038 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1039 I.e. a const string initializer with parens around it. That is
1040 what N_("string") resolves to, so we make no_* be macros instead. */
1041 #define no_arg N_("Argument missing after %s")
1042 #define no_ass N_("Assertion missing after %s")
1043 #define no_dir N_("Directory name missing after %s")
1044 #define no_fil N_("File name missing after %s")
1045 #define no_mac N_("Macro name missing after %s")
1046 #define no_pth N_("Path name missing after %s")
1047 #define no_num N_("Number missing after %s")
1048 #define no_tgt N_("Target missing after %s")
1050 /* This is the list of all command line options, with the leading
1051 "-" removed. It must be sorted in ASCII collating order. */
1052 #define COMMAND_LINE_OPTIONS \
1053 DEF_OPT("$", 0, OPT_dollar) \
1054 DEF_OPT("+", 0, OPT_plus) \
1055 DEF_OPT("-help", 0, OPT__help) \
1056 DEF_OPT("-target-help", 0, OPT_target__help) \
1057 DEF_OPT("-version", 0, OPT__version) \
1058 DEF_OPT("A", no_ass, OPT_A) \
1059 DEF_OPT("C", 0, OPT_C) \
1060 DEF_OPT("D", no_mac, OPT_D) \
1061 DEF_OPT("H", 0, OPT_H) \
1062 DEF_OPT("I", no_dir, OPT_I) \
1063 DEF_OPT("M", 0, OPT_M) \
1064 DEF_OPT("MD", no_fil, OPT_MD) \
1065 DEF_OPT("MF", no_fil, OPT_MF) \
1066 DEF_OPT("MG", 0, OPT_MG) \
1067 DEF_OPT("MM", 0, OPT_MM) \
1068 DEF_OPT("MMD", no_fil, OPT_MMD) \
1069 DEF_OPT("MP", 0, OPT_MP) \
1070 DEF_OPT("MQ", no_tgt, OPT_MQ) \
1071 DEF_OPT("MT", no_tgt, OPT_MT) \
1072 DEF_OPT("P", 0, OPT_P) \
1073 DEF_OPT("U", no_mac, OPT_U) \
1074 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1075 DEF_OPT("d", no_arg, OPT_d) \
1076 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1077 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1078 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1079 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1080 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1081 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1082 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1083 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1084 DEF_OPT("h", 0, OPT_h) \
1085 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1086 DEF_OPT("imacros", no_fil, OPT_imacros) \
1087 DEF_OPT("include", no_fil, OPT_include) \
1088 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1089 DEF_OPT("isystem", no_dir, OPT_isystem) \
1090 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1091 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1092 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1093 DEF_OPT("lang-c", 0, OPT_lang_c) \
1094 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1095 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1096 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1097 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1098 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1099 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1100 DEF_OPT("o", no_fil, OPT_o) \
1101 DEF_OPT("pedantic", 0, OPT_pedantic) \
1102 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1103 DEF_OPT("remap", 0, OPT_remap) \
1104 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1105 DEF_OPT("std=c89", 0, OPT_std_c89) \
1106 DEF_OPT("std=c99", 0, OPT_std_c99) \
1107 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1108 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1109 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1110 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1111 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1112 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1113 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1114 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1115 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1116 DEF_OPT("v", 0, OPT_v) \
1117 DEF_OPT("version", 0, OPT_version) \
1118 DEF_OPT("w", 0, OPT_w)
1120 #define DEF_OPT(text, msg, code) code,
1123 COMMAND_LINE_OPTIONS
1130 const char *opt_text;
1133 enum opt_code opt_code;
1136 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1138 static struct cl_option cl_options[] =
1140 static const struct cl_option cl_options[] =
1143 COMMAND_LINE_OPTIONS
1146 #undef COMMAND_LINE_OPTIONS
1148 /* Perform a binary search to find which, if any, option the given
1149 command-line matches. Returns its index in the option array,
1150 negative on failure. Complications arise since some options can be
1151 suffixed with an argument, and multiple complete matches can occur,
1152 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to
1153 accept options beginning with -W that we do not recognise, but not
1154 to swallow any subsequent command line argument; this is handled as
1155 special cases in cpp_handle_option. */
1157 parse_option (input)
1160 unsigned int md, mn, mx;
1171 opt_len = cl_options[md].opt_len;
1172 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1180 if (input[opt_len] == '\0')
1182 /* We were passed more text. If the option takes an argument,
1183 we may match a later option or we may have been passed the
1184 argument. The longest possible option match succeeds.
1185 If the option takes no arguments we have not matched and
1186 continue the search (e.g. input="stdc++" match was "stdc"). */
1188 if (cl_options[md].msg)
1190 /* Scan forwards. If we get an exact match, return it.
1191 Otherwise, return the longest option-accepting match.
1192 This loops no more than twice with current options. */
1194 for (; mn < (unsigned int) N_OPTS; mn++)
1196 opt_len = cl_options[mn].opt_len;
1197 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1199 if (input[opt_len] == '\0')
1201 if (cl_options[mn].msg)
1212 /* Handle one command-line option in (argc, argv).
1213 Can be called multiple times, to handle multiple sets of options.
1214 Returns number of strings consumed. */
1217 cpp_handle_option (pfile, argc, argv)
1223 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1225 /* Interpret "-" or a non-option as a file name. */
1226 if (argv[i][0] != '-' || argv[i][1] == '\0')
1228 if (CPP_OPTION (pfile, in_fname) == NULL)
1229 CPP_OPTION (pfile, in_fname) = argv[i];
1230 else if (CPP_OPTION (pfile, out_fname) == NULL)
1231 CPP_OPTION (pfile, out_fname) = argv[i];
1233 cpp_fatal (pfile, "Too many filenames. Type %s --help for usage info",
1238 enum opt_code opt_code;
1240 const char *arg = 0;
1242 /* Skip over '-'. */
1243 opt_index = parse_option (&argv[i][1]);
1247 opt_code = cl_options[opt_index].opt_code;
1248 if (cl_options[opt_index].msg)
1250 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1252 /* Yuk. Special case for -W as it must not swallow
1253 up any following argument. If this becomes common, add
1254 another field to the cl_options table. */
1255 if (arg[0] == '\0' && opt_code != OPT_W)
1260 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1268 case N_OPTS: /* Shut GCC up. */
1270 case OPT_fleading_underscore:
1271 CPP_OPTION (pfile, user_label_prefix) = "_";
1273 case OPT_fno_leading_underscore:
1274 CPP_OPTION (pfile, user_label_prefix) = "";
1276 case OPT_fno_operator_names:
1277 CPP_OPTION (pfile, operator_names) = 0;
1279 case OPT_fpreprocessed:
1280 CPP_OPTION (pfile, preprocessed) = 1;
1282 case OPT_fno_preprocessed:
1283 CPP_OPTION (pfile, preprocessed) = 0;
1285 case OPT_fshow_column:
1286 CPP_OPTION (pfile, show_column) = 1;
1288 case OPT_fno_show_column:
1289 CPP_OPTION (pfile, show_column) = 0;
1292 /* Silently ignore empty string, non-longs and silly values. */
1296 long tabstop = strtol (arg, &endptr, 10);
1297 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1298 CPP_OPTION (pfile, tabstop) = tabstop;
1302 CPP_OPTION (pfile, inhibit_warnings) = 1;
1307 CPP_OPTION (pfile, help_only) = 1;
1309 case OPT_target__help:
1310 /* Print if any target specific options. cpplib has none, but
1311 make sure help_only gets set. */
1312 CPP_OPTION (pfile, help_only) = 1;
1315 /* --version inhibits compilation, -version doesn't. -v means
1316 verbose and -version. Historical reasons, don't ask. */
1318 CPP_OPTION (pfile, help_only) = 1;
1319 pfile->print_version = 1;
1322 CPP_OPTION (pfile, verbose) = 1;
1323 pfile->print_version = 1;
1326 pfile->print_version = 1;
1330 CPP_OPTION (pfile, discard_comments) = 0;
1333 CPP_OPTION (pfile, no_line_commands) = 1;
1335 case OPT_dollar: /* Don't include $ in identifiers. */
1336 CPP_OPTION (pfile, dollars_in_ident) = 0;
1339 CPP_OPTION (pfile, print_include_names) = 1;
1342 new_pending_directive (pend, arg, cpp_define);
1344 case OPT_pedantic_errors:
1345 CPP_OPTION (pfile, pedantic_errors) = 1;
1348 CPP_OPTION (pfile, pedantic) = 1;
1351 CPP_OPTION (pfile, trigraphs) = 1;
1354 CPP_OPTION (pfile, cplusplus) = 1;
1355 CPP_OPTION (pfile, cplusplus_comments) = 1;
1358 CPP_OPTION (pfile, remap) = 1;
1361 CPP_OPTION (pfile, include_prefix) = arg;
1362 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1365 set_lang (pfile, CLK_GNUC89);
1367 case OPT_lang_cplusplus:
1368 set_lang (pfile, CLK_GNUCXX);
1371 set_lang (pfile, CLK_OBJC);
1373 case OPT_lang_objcplusplus:
1374 set_lang (pfile, CLK_OBJCXX);
1377 set_lang (pfile, CLK_ASM);
1379 case OPT_std_cplusplus98:
1380 set_lang (pfile, CLK_CXX98);
1383 set_lang (pfile, CLK_GNUC89);
1387 set_lang (pfile, CLK_GNUC99);
1389 case OPT_std_iso9899_199409:
1390 set_lang (pfile, CLK_STDC94);
1392 case OPT_std_iso9899_1990:
1395 set_lang (pfile, CLK_STDC89);
1397 case OPT_std_iso9899_199x:
1398 case OPT_std_iso9899_1999:
1401 set_lang (pfile, CLK_STDC99);
1404 /* -nostdinc causes no default include directories.
1405 You must specify all include-file directories with -I. */
1406 CPP_OPTION (pfile, no_standard_includes) = 1;
1408 case OPT_nostdincplusplus:
1409 /* -nostdinc++ causes no default C++-specific include directories. */
1410 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1413 if (CPP_OPTION (pfile, out_fname) == NULL)
1414 CPP_OPTION (pfile, out_fname) = arg;
1417 cpp_fatal (pfile, "Output filename specified twice");
1422 /* Args to -d specify what parts of macros to dump.
1423 Silently ignore unrecognised options; they may
1424 be aimed at the compiler proper. */
1428 while ((c = *arg++) != '\0')
1432 CPP_OPTION (pfile, dump_macros) = dump_only;
1433 CPP_OPTION (pfile, no_output) = 1;
1436 CPP_OPTION (pfile, dump_macros) = dump_names;
1439 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1442 CPP_OPTION (pfile, dump_includes) = 1;
1449 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1452 CPP_OPTION (pfile, print_deps) = 2;
1455 CPP_OPTION (pfile, print_deps) = 1;
1458 CPP_OPTION (pfile, deps_file) = arg;
1461 CPP_OPTION (pfile, deps_phony_targets) = 1;
1465 /* Add a target. -MQ quotes for Make. */
1466 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1469 /* -MD and -MMD for cpp0 are deprecated and undocumented
1470 (use -M or -MM with -MF instead), and probably should be
1471 removed with the next major GCC version. For the moment
1472 we allow these for the benefit of Automake 1.4, which
1473 uses these when dependency tracking is enabled. Automake
1474 1.5 will fix this. */
1476 CPP_OPTION (pfile, print_deps) = 2;
1477 CPP_OPTION (pfile, deps_file) = arg;
1480 CPP_OPTION (pfile, print_deps) = 1;
1481 CPP_OPTION (pfile, deps_file) = arg;
1487 /* -A with an argument beginning with '-' acts as
1488 #unassert on whatever immediately follows the '-'.
1489 If "-" is the whole argument, we eliminate all
1490 predefined macros and assertions, including those
1491 that were specified earlier on the command line.
1492 That way we can get rid of any that were passed
1493 automatically in from GCC. */
1497 struct pending_option *o1, *o2;
1499 o1 = pend->directive_head;
1506 pend->directive_head = NULL;
1507 pend->directive_tail = NULL;
1510 new_pending_directive (pend, arg + 1, cpp_unassert);
1513 new_pending_directive (pend, arg, cpp_assert);
1516 new_pending_directive (pend, arg, cpp_undef);
1518 case OPT_I: /* Add directory to path for includes. */
1519 if (!strcmp (arg, "-"))
1522 Use the preceding -I directories for #include "..."
1523 but not #include <...>.
1524 Don't search the directory of the present file
1525 for #include "...". (Note that -I. -I- is not the same as
1526 the default setup; -I. uses the compiler's working dir.) */
1527 if (! CPP_OPTION (pfile, ignore_srcdir))
1529 pend->quote_head = pend->brack_head;
1530 pend->quote_tail = pend->brack_tail;
1531 pend->brack_head = 0;
1532 pend->brack_tail = 0;
1533 CPP_OPTION (pfile, ignore_srcdir) = 1;
1537 cpp_fatal (pfile, "-I- specified twice");
1542 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1545 /* Add directory to beginning of system include path, as a system
1546 include directory. */
1547 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1551 struct pending_option *o = (struct pending_option *)
1552 xmalloc (sizeof (struct pending_option));
1555 /* This list has to be built in reverse order so that
1556 when cpp_start_read pushes all the -include files onto
1557 the buffer stack, they will be scanned in forward order. */
1558 o->next = pend->include_head;
1559 pend->include_head = o;
1564 struct pending_option *o = (struct pending_option *)
1565 xmalloc (sizeof (struct pending_option));
1569 APPEND (pend, imacros, o);
1572 case OPT_iwithprefix:
1573 /* Add directory to end of path for includes,
1574 with the default prefix at the front of its name. */
1576 case OPT_iwithprefixbefore:
1577 /* Add directory to main path for includes,
1578 with the default prefix at the front of its name. */
1585 if (CPP_OPTION (pfile, include_prefix) != 0)
1587 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1588 fname = xmalloc (ipl + len + 1);
1589 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1590 memcpy (fname + ipl, arg, len + 1);
1592 else if (cpp_GCC_INCLUDE_DIR_len)
1594 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1595 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1596 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1599 fname = xstrdup (arg);
1601 append_include_chain (pfile, fname,
1602 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1606 /* Add directory to end of path for includes. */
1607 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1610 /* Silently ignore unrecognised options. */
1611 if (!strcmp (argv[i], "-Wall"))
1613 CPP_OPTION (pfile, warn_trigraphs) = 1;
1614 CPP_OPTION (pfile, warn_comments) = 1;
1616 else if (!strcmp (argv[i], "-Wtraditional"))
1617 CPP_OPTION (pfile, warn_traditional) = 1;
1618 else if (!strcmp (argv[i], "-Wtrigraphs"))
1619 CPP_OPTION (pfile, warn_trigraphs) = 1;
1620 else if (!strcmp (argv[i], "-Wcomment"))
1621 CPP_OPTION (pfile, warn_comments) = 1;
1622 else if (!strcmp (argv[i], "-Wcomments"))
1623 CPP_OPTION (pfile, warn_comments) = 1;
1624 else if (!strcmp (argv[i], "-Wundef"))
1625 CPP_OPTION (pfile, warn_undef) = 1;
1626 else if (!strcmp (argv[i], "-Wimport"))
1627 CPP_OPTION (pfile, warn_import) = 1;
1628 else if (!strcmp (argv[i], "-Werror"))
1629 CPP_OPTION (pfile, warnings_are_errors) = 1;
1630 else if (!strcmp (argv[i], "-Wsystem-headers"))
1631 CPP_OPTION (pfile, warn_system_headers) = 1;
1632 else if (!strcmp (argv[i], "-Wno-traditional"))
1633 CPP_OPTION (pfile, warn_traditional) = 0;
1634 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1635 CPP_OPTION (pfile, warn_trigraphs) = 0;
1636 else if (!strcmp (argv[i], "-Wno-comment"))
1637 CPP_OPTION (pfile, warn_comments) = 0;
1638 else if (!strcmp (argv[i], "-Wno-comments"))
1639 CPP_OPTION (pfile, warn_comments) = 0;
1640 else if (!strcmp (argv[i], "-Wno-undef"))
1641 CPP_OPTION (pfile, warn_undef) = 0;
1642 else if (!strcmp (argv[i], "-Wno-import"))
1643 CPP_OPTION (pfile, warn_import) = 0;
1644 else if (!strcmp (argv[i], "-Wno-error"))
1645 CPP_OPTION (pfile, warnings_are_errors) = 0;
1646 else if (!strcmp (argv[i], "-Wno-system-headers"))
1647 CPP_OPTION (pfile, warn_system_headers) = 0;
1654 /* Handle command-line options in (argc, argv).
1655 Can be called multiple times, to handle multiple sets of options.
1656 Returns if an unrecognized option is seen.
1657 Returns number of strings consumed. */
1659 cpp_handle_options (pfile, argc, argv)
1665 int strings_processed;
1667 for (i = 0; i < argc; i += strings_processed)
1669 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1670 if (strings_processed == 0)
1677 /* Extra processing when all options are parsed, after all calls to
1678 cpp_handle_option[s]. Consistency checks etc. */
1680 cpp_post_options (pfile)
1683 if (pfile->print_version)
1685 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1686 #ifdef TARGET_VERSION
1689 fputc ('\n', stderr);
1692 /* Canonicalize in_fname and out_fname. We guarantee they are not
1693 NULL, and that the empty string represents stdin / stdout. */
1694 if (CPP_OPTION (pfile, in_fname) == NULL
1695 || !strcmp (CPP_OPTION (pfile, in_fname), "-"))
1696 CPP_OPTION (pfile, in_fname) = "";
1698 if (CPP_OPTION (pfile, out_fname) == NULL
1699 || !strcmp (CPP_OPTION (pfile, out_fname), "-"))
1700 CPP_OPTION (pfile, out_fname) = "";
1702 /* -Wtraditional is not useful in C++ mode. */
1703 if (CPP_OPTION (pfile, cplusplus))
1704 CPP_OPTION (pfile, warn_traditional) = 0;
1706 /* Set this if it hasn't been set already. */
1707 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1708 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1710 /* We need to do this after option processing and before
1711 cpp_start_read, as cppmain.c relies on the options->no_output to
1712 set its callbacks correctly before calling cpp_start_read. */
1713 init_dependency_output (pfile);
1715 /* After checking the environment variables, check if -M or -MM has
1716 not been specified, but other -M options have. */
1717 if (CPP_OPTION (pfile, print_deps) == 0 &&
1718 (CPP_OPTION (pfile, print_deps_missing_files)
1719 || CPP_OPTION (pfile, deps_file)
1720 || CPP_OPTION (pfile, deps_phony_targets)))
1721 cpp_fatal (pfile, "you must additionally specify either -M or -MM");
1724 /* Set up dependency-file output. */
1726 init_dependency_output (pfile)
1729 char *spec, *s, *output_file;
1731 /* Either of two environment variables can specify output of deps.
1732 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1733 where OUTPUT_FILE is the file to write deps info to
1734 and DEPS_TARGET is the target to mention in the deps. */
1736 if (CPP_OPTION (pfile, print_deps) == 0)
1738 spec = getenv ("DEPENDENCIES_OUTPUT");
1740 CPP_OPTION (pfile, print_deps) = 1;
1743 spec = getenv ("SUNPRO_DEPENDENCIES");
1745 CPP_OPTION (pfile, print_deps) = 2;
1750 /* Find the space before the DEPS_TARGET, if there is one. */
1751 s = strchr (spec, ' ');
1754 /* Let the caller perform MAKE quoting. */
1755 deps_add_target (pfile->deps, s + 1, 0);
1756 output_file = (char *) xmalloc (s - spec + 1);
1757 memcpy (output_file, spec, s - spec);
1758 output_file[s - spec] = 0;
1763 /* Command line overrides environment variables. */
1764 if (CPP_OPTION (pfile, deps_file) == 0)
1765 CPP_OPTION (pfile, deps_file) = output_file;
1766 CPP_OPTION (pfile, print_deps_append) = 1;
1769 /* If dependencies go to standard output, or -MG is used, we should
1770 suppress output. The user may be requesting other stuff to
1771 stdout, with -dM, -v etc. We let them shoot themselves in the
1773 if (CPP_OPTION (pfile, deps_file) == 0
1774 || CPP_OPTION (pfile, print_deps_missing_files))
1775 CPP_OPTION (pfile, no_output) = 1;
1781 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1782 /* To keep the lines from getting too long for some compilers, limit
1783 to about 500 characters (6 lines) per chunk. */
1786 -include <file> Include the contents of <file> before other files\n\
1787 -imacros <file> Accept definition of macros in <file>\n\
1788 -iprefix <path> Specify <path> as a prefix for next two options\n\
1789 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1790 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1791 -isystem <dir> Add <dir> to the start of the system include path\n\
1794 -idirafter <dir> Add <dir> to the end of the system include path\n\
1795 -I <dir> Add <dir> to the end of the main include path\n\
1796 -I- Fine-grained include path control; see info docs\n\
1797 -nostdinc Do not search system include directories\n\
1798 (dirs specified with -isystem will still be used)\n\
1799 -nostdinc++ Do not search system include directories for C++\n\
1800 -o <file> Put output into <file>\n\
1803 -pedantic Issue all warnings demanded by strict ISO C\n\
1804 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1805 -trigraphs Support ISO C trigraphs\n\
1806 -lang-c Assume that the input sources are in C\n\
1807 -lang-c89 Assume that the input sources are in C89\n\
1810 -lang-c++ Assume that the input sources are in C++\n\
1811 -lang-objc Assume that the input sources are in ObjectiveC\n\
1812 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1813 -lang-asm Assume that the input sources are in assembler\n\
1816 -std=<std name> Specify the conformance standard; one of:\n\
1817 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1818 iso9899:199409, iso9899:1999\n\
1819 -+ Allow parsing of C++ style features\n\
1820 -w Inhibit warning messages\n\
1821 -Wtrigraphs Warn if trigraphs are encountered\n\
1822 -Wno-trigraphs Do not warn about trigraphs\n\
1823 -Wcomment{s} Warn if one comment starts inside another\n\
1826 -Wno-comment{s} Do not warn about comments\n\
1827 -Wtraditional Warn about features not present in traditional C\n\
1828 -Wno-traditional Do not warn about traditional C\n\
1829 -Wundef Warn if an undefined macro is used by #if\n\
1830 -Wno-undef Do not warn about testing undefined macros\n\
1831 -Wimport Warn about the use of the #import directive\n\
1834 -Wno-import Do not warn about the use of #import\n\
1835 -Werror Treat all warnings as errors\n\
1836 -Wno-error Do not treat warnings as errors\n\
1837 -Wsystem-headers Do not suppress warnings from system headers\n\
1838 -Wno-system-headers Suppress warnings from system headers\n\
1839 -Wall Enable all preprocessor warnings\n\
1842 -M Generate make dependencies\n\
1843 -MM As -M, but ignore system header files\n\
1844 -MF <file> Write dependency output to the given file\n\
1845 -MG Treat missing header file as generated files\n\
1848 -MP Generate phony targets for all headers\n\
1849 -MQ <target> Add a MAKE-quoted target\n\
1850 -MT <target> Add an unquoted target\n\
1853 -D<macro> Define a <macro> with string '1' as its value\n\
1854 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1855 -A<question> (<answer>) Assert the <answer> to <question>\n\
1856 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1857 -U<macro> Undefine <macro> \n\
1858 -v Display the version number\n\
1861 -H Print the name of header files as they are used\n\
1862 -C Do not discard comments\n\
1863 -dM Display a list of macro definitions active at end\n\
1864 -dD Preserve macro definitions in output\n\
1865 -dN As -dD except that only the names are preserved\n\
1866 -dI Include #include directives in the output\n\
1869 -ftabstop=<number> Distance between tab stops for column reporting\n\
1870 -P Do not generate #line directives\n\
1871 -$ Do not allow '$' in identifiers\n\
1872 -remap Remap file names when including files.\n\
1873 --version Display version information\n\
1874 -h or --help Display this information\n\