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. */
379 char extended_numbers;
381 char dollars_in_ident;
382 char cplusplus_comments;
386 /* ??? Enable $ in identifiers in assembly? */
387 static const struct lang_flags lang_defaults[] =
388 { /* c99 objc c++ xnum trig dollar c++comm digr */
389 /* GNUC89 */ { 0, 0, 0, 1, 0, 1, 1, 1 },
390 /* GNUC99 */ { 1, 0, 0, 1, 0, 1, 1, 1 },
391 /* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0 },
392 /* STDC94 */ { 0, 0, 0, 0, 1, 0, 0, 1 },
393 /* STDC99 */ { 1, 0, 0, 1, 1, 0, 1, 1 },
394 /* GNUCXX */ { 0, 0, 1, 1, 0, 1, 1, 1 },
395 /* CXX98 */ { 0, 0, 1, 1, 1, 0, 1, 1 },
396 /* OBJC */ { 0, 1, 0, 1, 0, 1, 1, 1 },
397 /* OBJCXX */ { 0, 1, 1, 1, 0, 1, 1, 1 },
398 /* ASM */ { 0, 0, 0, 1, 0, 0, 1, 0 }
402 set_lang (pfile, lang)
406 const struct lang_flags *l = &lang_defaults[(int) lang];
408 CPP_OPTION (pfile, lang) = lang;
410 CPP_OPTION (pfile, c99) = l->c99;
411 CPP_OPTION (pfile, objc) = l->objc;
412 CPP_OPTION (pfile, cplusplus) = l->cplusplus;
413 CPP_OPTION (pfile, extended_numbers) = l->extended_numbers;
414 CPP_OPTION (pfile, trigraphs) = l->trigraphs;
415 CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident;
416 CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments;
417 CPP_OPTION (pfile, digraphs) = l->digraphs;
421 static int opt_comp PARAMS ((const void *, const void *));
423 /* Run-time sorting of options array. */
428 return strcmp (((struct cl_option *) p1)->opt_text,
429 ((struct cl_option *) p2)->opt_text);
433 /* init initializes library global state. It might not need to
434 do anything depending on the platform and compiler. */
439 static int initialized = 0;
446 /* For non-ASCII hosts, the cl_options array needs to be sorted at
448 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
451 /* Set up the trigraph map. This doesn't need to do anything if
452 we were compiled with a compiler that supports C99 designated
454 init_trigraph_map ();
458 /* Initialize a cpp_reader structure. */
460 cpp_create_reader (table, lang)
464 struct spec_nodes *s;
467 /* Initialise this instance of the library if it hasn't been already. */
470 pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
472 set_lang (pfile, lang);
473 CPP_OPTION (pfile, warn_import) = 1;
474 CPP_OPTION (pfile, discard_comments) = 1;
475 CPP_OPTION (pfile, show_column) = 1;
476 CPP_OPTION (pfile, tabstop) = 8;
477 CPP_OPTION (pfile, operator_names) = 1;
479 CPP_OPTION (pfile, pending) =
480 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
482 /* It's simplest to just create this struct whether or not it will
484 pfile->deps = deps_init ();
486 /* Initialize lexer state. */
487 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
489 /* Indicate date and time not yet calculated. */
490 pfile->date.type = CPP_EOF;
492 /* Initialise the base context. */
493 pfile->context = &pfile->base_context;
494 pfile->base_context.macro = 0;
495 pfile->base_context.prev = pfile->base_context.next = 0;
497 /* Identifier pool initially 8K. Unaligned, permanent pool. */
498 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
500 /* Argument pool initially 8K. Aligned, temporary pool. */
501 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
503 /* Macro pool initially 8K. Aligned, permanent pool. */
504 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
506 /* Initialise the buffer obstack. */
507 gcc_obstack_init (&pfile->buffer_ob);
509 /* Initialise the hashtable. */
510 _cpp_init_hashtable (pfile, table);
512 _cpp_init_directives (pfile);
513 _cpp_init_includes (pfile);
514 _cpp_init_internal_pragmas (pfile);
516 /* Initialize the special nodes. */
517 s = &pfile->spec_nodes;
518 s->n_L = cpp_lookup (pfile, DSC("L"));
519 s->n_defined = cpp_lookup (pfile, DSC("defined"));
520 s->n_true = cpp_lookup (pfile, DSC("true"));
521 s->n_false = cpp_lookup (pfile, DSC("false"));
522 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
523 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
524 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
525 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
526 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
531 /* Free resources used by PFILE. Accessing PFILE after this function
532 returns leads to undefined behaviour. */
538 struct search_path *dir, *dirn;
539 cpp_context *context, *contextn;
541 while (CPP_BUFFER (pfile) != NULL)
542 cpp_pop_buffer (pfile);
544 if (pfile->macro_buffer)
546 free ((PTR) pfile->macro_buffer);
547 pfile->macro_buffer = NULL;
548 pfile->macro_buffer_len = 0;
551 deps_free (pfile->deps);
552 obstack_free (&pfile->buffer_ob, 0);
554 _cpp_destroy_hashtable (pfile);
555 _cpp_cleanup_includes (pfile);
556 _cpp_free_lookaheads (pfile);
558 _cpp_free_pool (&pfile->ident_pool);
559 _cpp_free_pool (&pfile->macro_pool);
560 _cpp_free_pool (&pfile->argument_pool);
562 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
565 free ((PTR) dir->name);
569 for (context = pfile->base_context.next; context; context = contextn)
571 contextn = context->next;
575 result = pfile->errors;
582 /* This structure defines one built-in identifier. A node will be
583 entered in the hash table under the name NAME, with value VALUE (if
584 any). If flags has OPERATOR, the node's operator field is used; if
585 flags has BUILTIN the node's builtin field is used. Macros that are
586 known at build time should not be flagged BUILTIN, as then they do
587 not appear in macro dumps with e.g. -dM or -dD.
589 Two values are not compile time constants, so we tag
590 them in the FLAGS field instead:
591 VERS value is the global version_string, quoted
592 ULP value is the global user_label_prefix
594 Also, macros with CPLUS set in the flags field are entered only for C++. */
600 unsigned char builtin;
601 unsigned char operator;
602 unsigned short flags;
609 #define OPERATOR 0x10
611 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
612 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
613 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
614 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
615 static const struct builtin builtin_array[] =
617 B("__TIME__", BT_TIME),
618 B("__DATE__", BT_DATE),
619 B("__FILE__", BT_FILE),
620 B("__BASE_FILE__", BT_BASE_FILE),
621 B("__LINE__", BT_SPECLINE),
622 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
624 X("__VERSION__", VERS),
625 X("__USER_LABEL_PREFIX__", ULP),
626 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
627 C("__HAVE_BUILTIN_SETJMP__", "1"),
628 #ifndef NO_BUILTIN_SIZE_TYPE
629 C("__SIZE_TYPE__", SIZE_TYPE),
631 #ifndef NO_BUILTIN_PTRDIFF_TYPE
632 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
634 #ifndef NO_BUILTIN_WCHAR_TYPE
635 C("__WCHAR_TYPE__", WCHAR_TYPE),
637 #ifndef NO_BUILTIN_WINT_TYPE
638 C("__WINT_TYPE__", WINT_TYPE),
640 #ifdef STDC_0_IN_SYSTEM_HEADERS
641 B("__STDC__", BT_STDC),
646 /* Named operators known to the preprocessor. These cannot be #defined
647 and always have their stated meaning. They are treated like normal
648 identifiers except for the type code and the meaning. Most of them
649 are only for C++ (but see iso646.h). */
650 O("and", CPP_AND_AND, CPLUS),
651 O("and_eq", CPP_AND_EQ, CPLUS),
652 O("bitand", CPP_AND, CPLUS),
653 O("bitor", CPP_OR, CPLUS),
654 O("compl", CPP_COMPL, CPLUS),
655 O("not", CPP_NOT, CPLUS),
656 O("not_eq", CPP_NOT_EQ, CPLUS),
657 O("or", CPP_OR_OR, CPLUS),
658 O("or_eq", CPP_OR_EQ, CPLUS),
659 O("xor", CPP_XOR, CPLUS),
660 O("xor_eq", CPP_XOR_EQ, CPLUS)
666 #define builtin_array_end \
667 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
669 /* Subroutine of cpp_start_read; reads the builtins table above and
670 enters the macros into the hash table. */
672 init_builtins (pfile)
675 const struct builtin *b;
677 for(b = builtin_array; b < builtin_array_end; b++)
679 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
682 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
685 if (b->flags & (OPERATOR | BUILTIN))
687 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
688 if (b->flags & OPERATOR)
690 hp->flags |= NODE_OPERATOR;
691 hp->value.operator = b->operator;
696 hp->flags |= NODE_BUILTIN | NODE_WARN;
697 hp->value.builtin = b->builtin;
700 else /* A standard macro of some kind. */
707 /* Allocate enough space for 'name "value"\n\0'. */
708 str = alloca (b->len + strlen (version_string) + 5);
709 sprintf (str, "%s \"%s\"\n", b->name, version_string);
714 val = CPP_OPTION (pfile, user_label_prefix);
718 /* Allocate enough space for "name value\n\0". */
719 str = alloca (b->len + strlen (val) + 3);
720 sprintf(str, "%s %s\n", b->name, val);
723 _cpp_define_builtin (pfile, str);
727 if (CPP_OPTION (pfile, cplusplus))
729 _cpp_define_builtin (pfile, "__cplusplus 1");
730 if (SUPPORTS_ONE_ONLY)
731 _cpp_define_builtin (pfile, "__GXX_WEAK__ 1");
733 _cpp_define_builtin (pfile, "__GXX_WEAK__ 0");
735 if (CPP_OPTION (pfile, objc))
736 _cpp_define_builtin (pfile, "__OBJC__ 1");
738 if (CPP_OPTION (pfile, lang) == CLK_STDC94)
739 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
740 else if (CPP_OPTION (pfile, c99))
741 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
743 if (CPP_OPTION (pfile, lang) == CLK_STDC89
744 || CPP_OPTION (pfile, lang) == CLK_STDC94
745 || CPP_OPTION (pfile, lang) == CLK_STDC99)
746 _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1");
747 else if (CPP_OPTION (pfile, lang) == CLK_ASM)
748 _cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
755 #undef builtin_array_end
757 /* And another subroutine. This one sets up the standard include path. */
759 init_standard_includes (pfile)
763 const struct default_include *p;
764 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
766 /* Several environment variables may add to the include search path.
767 CPATH specifies an additional list of directories to be searched
768 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
769 etc. specify an additional list of directories to be searched as
770 if specified with -isystem, for the language indicated. */
772 GET_ENV_PATH_LIST (path, "CPATH");
773 if (path != 0 && *path != 0)
774 path_include (pfile, path, BRACKET);
776 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
779 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
782 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
785 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
788 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
791 if (path != 0 && *path != 0)
792 path_include (pfile, path, SYSTEM);
794 /* Search "translated" versions of GNU directories.
795 These have /usr/local/lib/gcc... replaced by specd_prefix. */
796 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
798 /* Remove the `include' from /usr/local/lib/gcc.../include.
799 GCC_INCLUDE_DIR will always end in /include. */
800 int default_len = cpp_GCC_INCLUDE_DIR_len;
801 char *default_prefix = (char *) alloca (default_len + 1);
802 int specd_len = strlen (specd_prefix);
804 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
805 default_prefix[default_len] = '\0';
807 for (p = cpp_include_defaults; p->fname; p++)
809 /* Some standard dirs are only for C++. */
811 || (CPP_OPTION (pfile, cplusplus)
812 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
814 /* Does this dir start with the prefix? */
815 if (!memcmp (p->fname, default_prefix, default_len))
817 /* Yes; change prefix and add to search list. */
818 int flen = strlen (p->fname);
819 int this_len = specd_len + flen - default_len;
820 char *str = (char *) xmalloc (this_len + 1);
821 memcpy (str, specd_prefix, specd_len);
822 memcpy (str + specd_len,
823 p->fname + default_len,
824 flen - default_len + 1);
826 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
832 /* Search ordinary names for GNU include directories. */
833 for (p = cpp_include_defaults; p->fname; p++)
835 /* Some standard dirs are only for C++. */
837 || (CPP_OPTION (pfile, cplusplus)
838 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
840 char *str = xstrdup (update_path (p->fname, p->component));
841 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
846 /* Handles -imacro and -include from the command line. */
848 do_includes (pfile, p, scan)
850 struct pending_option *p;
855 struct pending_option *q;
857 /* Don't handle if -fpreprocessed. Later: maybe update this to
858 use the #include "" search path if cpp_read_file fails. */
859 if (CPP_OPTION (pfile, preprocessed))
860 cpp_error (pfile, "-include and -imacros cannot be used with -fpreprocessed");
864 header.type = CPP_STRING;
865 header.val.str.text = (const unsigned char *) p->arg;
866 header.val.str.len = strlen (p->arg);
867 if (_cpp_execute_include (pfile, &header, IT_CMDLINE) && scan)
868 cpp_scan_buffer_nooutput (pfile, 0);
876 /* This is called after options have been processed. Setup for
877 processing input from the file named FNAME, or stdin if it is the
878 empty string. Return 1 on success, 0 on failure. */
880 cpp_start_read (pfile, fname)
884 struct pending_option *p, *q;
886 /* Set up the include search path now. */
887 if (! CPP_OPTION (pfile, no_standard_includes))
888 init_standard_includes (pfile);
890 merge_include_chains (pfile);
892 /* With -v, print the list of dirs to search. */
893 if (CPP_OPTION (pfile, verbose))
895 struct search_path *l;
896 fprintf (stderr, _("#include \"...\" search starts here:\n"));
897 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
899 if (l == CPP_OPTION (pfile, bracket_include))
900 fprintf (stderr, _("#include <...> search starts here:\n"));
901 fprintf (stderr, " %s\n", l->name);
903 fprintf (stderr, _("End of search list.\n"));
906 if (CPP_OPTION (pfile, print_deps))
907 /* Set the default target (if there is none already). */
908 deps_add_default_target (pfile->deps, fname);
910 /* Open the main input file. This must be done early, so we have a
911 buffer to stand on. */
912 if (!_cpp_read_file (pfile, fname))
915 /* If already preprocessed, don't install __LINE__, etc., and ignore
916 command line definitions and assertions. Handle -U's, -D's and
917 -A's in the order they were seen. */
918 if (! CPP_OPTION (pfile, preprocessed))
919 init_builtins (pfile);
921 p = CPP_OPTION (pfile, pending)->directive_head;
924 if (! CPP_OPTION (pfile, preprocessed))
925 (*p->handler) (pfile, p->arg);
931 /* The -imacros files can be scanned now, but the -include files
932 have to be pushed onto the buffer stack and processed later,
933 otherwise cppmain.c won't see the tokens. include_head was built
934 up as a stack, and popping this stack onto the buffer stack means
935 we preserve the order of the command line. */
936 do_includes (pfile, CPP_OPTION (pfile, pending)->imacros_head, 1);
937 do_includes (pfile, CPP_OPTION (pfile, pending)->include_head, 0);
939 free (CPP_OPTION (pfile, pending));
940 CPP_OPTION (pfile, pending) = NULL;
945 /* Use mkdeps.c to output dependency information. */
950 /* Stream on which to print the dependency information. */
951 FILE *deps_stream = 0;
952 const char *deps_mode = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
954 if (CPP_OPTION (pfile, deps_file) == 0)
955 deps_stream = stdout;
958 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
959 if (deps_stream == 0)
961 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
966 deps_write (pfile->deps, deps_stream, 72);
968 if (CPP_OPTION (pfile, deps_phony_targets))
969 deps_phony_targets (pfile->deps, deps_stream);
971 /* Don't close stdout. */
972 if (CPP_OPTION (pfile, deps_file))
974 if (ferror (deps_stream) || fclose (deps_stream) != 0)
975 cpp_fatal (pfile, "I/O error on output");
979 /* This is called at the end of preprocessing. It pops the
980 last buffer and writes dependency output. It should also
981 clear macro definitions, such that you could call cpp_start_read
982 with a new filename to restart processing. */
987 if (CPP_BUFFER (pfile))
989 cpp_ice (pfile, "buffers still stacked in cpp_finish");
990 while (CPP_BUFFER (pfile))
991 cpp_pop_buffer (pfile);
994 /* Don't write the deps file if preprocessing has failed. */
995 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
998 /* Report on headers that could use multiple include guards. */
999 if (CPP_OPTION (pfile, print_include_names))
1000 _cpp_report_missing_guards (pfile);
1004 new_pending_directive (pend, text, handler)
1005 struct cpp_pending *pend;
1007 cl_directive_handler handler;
1009 struct pending_option *o = (struct pending_option *)
1010 xmalloc (sizeof (struct pending_option));
1014 o->handler = handler;
1015 APPEND (pend, directive, o);
1018 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1019 I.e. a const string initializer with parens around it. That is
1020 what N_("string") resolves to, so we make no_* be macros instead. */
1021 #define no_arg N_("Argument missing after %s")
1022 #define no_ass N_("Assertion missing after %s")
1023 #define no_dir N_("Directory name missing after %s")
1024 #define no_fil N_("File name missing after %s")
1025 #define no_mac N_("Macro name missing after %s")
1026 #define no_pth N_("Path name missing after %s")
1027 #define no_num N_("Number missing after %s")
1028 #define no_tgt N_("Target missing after %s")
1030 /* This is the list of all command line options, with the leading
1031 "-" removed. It must be sorted in ASCII collating order. */
1032 #define COMMAND_LINE_OPTIONS \
1033 DEF_OPT("$", 0, OPT_dollar) \
1034 DEF_OPT("+", 0, OPT_plus) \
1035 DEF_OPT("-help", 0, OPT__help) \
1036 DEF_OPT("-target-help", 0, OPT_target__help) \
1037 DEF_OPT("-version", 0, OPT__version) \
1038 DEF_OPT("A", no_ass, OPT_A) \
1039 DEF_OPT("C", 0, OPT_C) \
1040 DEF_OPT("D", no_mac, OPT_D) \
1041 DEF_OPT("H", 0, OPT_H) \
1042 DEF_OPT("I", no_dir, OPT_I) \
1043 DEF_OPT("M", 0, OPT_M) \
1044 DEF_OPT("MD", no_fil, OPT_MD) \
1045 DEF_OPT("MF", no_fil, OPT_MF) \
1046 DEF_OPT("MG", 0, OPT_MG) \
1047 DEF_OPT("MM", 0, OPT_MM) \
1048 DEF_OPT("MMD", no_fil, OPT_MMD) \
1049 DEF_OPT("MP", 0, OPT_MP) \
1050 DEF_OPT("MQ", no_tgt, OPT_MQ) \
1051 DEF_OPT("MT", no_tgt, OPT_MT) \
1052 DEF_OPT("P", 0, OPT_P) \
1053 DEF_OPT("U", no_mac, OPT_U) \
1054 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1055 DEF_OPT("d", no_arg, OPT_d) \
1056 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1057 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1058 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1059 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1060 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1061 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1062 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1063 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1064 DEF_OPT("h", 0, OPT_h) \
1065 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1066 DEF_OPT("imacros", no_fil, OPT_imacros) \
1067 DEF_OPT("include", no_fil, OPT_include) \
1068 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1069 DEF_OPT("isystem", no_dir, OPT_isystem) \
1070 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1071 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1072 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1073 DEF_OPT("lang-c", 0, OPT_lang_c) \
1074 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1075 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1076 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1077 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1078 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1079 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1080 DEF_OPT("o", no_fil, OPT_o) \
1081 DEF_OPT("pedantic", 0, OPT_pedantic) \
1082 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1083 DEF_OPT("remap", 0, OPT_remap) \
1084 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1085 DEF_OPT("std=c89", 0, OPT_std_c89) \
1086 DEF_OPT("std=c99", 0, OPT_std_c99) \
1087 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1088 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1089 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1090 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1091 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1092 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1093 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1094 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1095 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1096 DEF_OPT("v", 0, OPT_v) \
1097 DEF_OPT("version", 0, OPT_version) \
1098 DEF_OPT("w", 0, OPT_w)
1100 #define DEF_OPT(text, msg, code) code,
1103 COMMAND_LINE_OPTIONS
1110 const char *opt_text;
1113 enum opt_code opt_code;
1116 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1118 static struct cl_option cl_options[] =
1120 static const struct cl_option cl_options[] =
1123 COMMAND_LINE_OPTIONS
1126 #undef COMMAND_LINE_OPTIONS
1128 /* Perform a binary search to find which, if any, option the given
1129 command-line matches. Returns its index in the option array,
1130 negative on failure. Complications arise since some options can be
1131 suffixed with an argument, and multiple complete matches can occur,
1132 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to
1133 accept options beginning with -W that we do not recognise, but not
1134 to swallow any subsequent command line argument; this is handled as
1135 special cases in cpp_handle_option. */
1137 parse_option (input)
1140 unsigned int md, mn, mx;
1151 opt_len = cl_options[md].opt_len;
1152 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1160 if (input[opt_len] == '\0')
1162 /* We were passed more text. If the option takes an argument,
1163 we may match a later option or we may have been passed the
1164 argument. The longest possible option match succeeds.
1165 If the option takes no arguments we have not matched and
1166 continue the search (e.g. input="stdc++" match was "stdc"). */
1168 if (cl_options[md].msg)
1170 /* Scan forwards. If we get an exact match, return it.
1171 Otherwise, return the longest option-accepting match.
1172 This loops no more than twice with current options. */
1174 for (; mn < (unsigned int) N_OPTS; mn++)
1176 opt_len = cl_options[mn].opt_len;
1177 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1179 if (input[opt_len] == '\0')
1181 if (cl_options[mn].msg)
1192 /* Handle one command-line option in (argc, argv).
1193 Can be called multiple times, to handle multiple sets of options.
1194 Returns number of strings consumed. */
1197 cpp_handle_option (pfile, argc, argv)
1203 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1205 /* Interpret "-" or a non-option as a file name. */
1206 if (argv[i][0] != '-' || argv[i][1] == '\0')
1208 if (CPP_OPTION (pfile, in_fname) == NULL)
1209 CPP_OPTION (pfile, in_fname) = argv[i];
1210 else if (CPP_OPTION (pfile, out_fname) == NULL)
1211 CPP_OPTION (pfile, out_fname) = argv[i];
1213 cpp_fatal (pfile, "Too many filenames. Type %s --help for usage info",
1218 enum opt_code opt_code;
1220 const char *arg = 0;
1222 /* Skip over '-'. */
1223 opt_index = parse_option (&argv[i][1]);
1227 opt_code = cl_options[opt_index].opt_code;
1228 if (cl_options[opt_index].msg)
1230 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1232 /* Yuk. Special case for -W as it must not swallow
1233 up any following argument. If this becomes common, add
1234 another field to the cl_options table. */
1235 if (arg[0] == '\0' && opt_code != OPT_W)
1240 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1248 case N_OPTS: /* Shut GCC up. */
1250 case OPT_fleading_underscore:
1251 CPP_OPTION (pfile, user_label_prefix) = "_";
1253 case OPT_fno_leading_underscore:
1254 CPP_OPTION (pfile, user_label_prefix) = "";
1256 case OPT_fno_operator_names:
1257 CPP_OPTION (pfile, operator_names) = 0;
1259 case OPT_fpreprocessed:
1260 CPP_OPTION (pfile, preprocessed) = 1;
1262 case OPT_fno_preprocessed:
1263 CPP_OPTION (pfile, preprocessed) = 0;
1265 case OPT_fshow_column:
1266 CPP_OPTION (pfile, show_column) = 1;
1268 case OPT_fno_show_column:
1269 CPP_OPTION (pfile, show_column) = 0;
1272 /* Silently ignore empty string, non-longs and silly values. */
1276 long tabstop = strtol (arg, &endptr, 10);
1277 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1278 CPP_OPTION (pfile, tabstop) = tabstop;
1282 CPP_OPTION (pfile, inhibit_warnings) = 1;
1287 CPP_OPTION (pfile, help_only) = 1;
1289 case OPT_target__help:
1290 /* Print if any target specific options. cpplib has none, but
1291 make sure help_only gets set. */
1292 CPP_OPTION (pfile, help_only) = 1;
1295 /* --version inhibits compilation, -version doesn't. -v means
1296 verbose and -version. Historical reasons, don't ask. */
1298 CPP_OPTION (pfile, help_only) = 1;
1299 pfile->print_version = 1;
1302 CPP_OPTION (pfile, verbose) = 1;
1303 pfile->print_version = 1;
1306 pfile->print_version = 1;
1310 CPP_OPTION (pfile, discard_comments) = 0;
1313 CPP_OPTION (pfile, no_line_commands) = 1;
1315 case OPT_dollar: /* Don't include $ in identifiers. */
1316 CPP_OPTION (pfile, dollars_in_ident) = 0;
1319 CPP_OPTION (pfile, print_include_names) = 1;
1322 new_pending_directive (pend, arg, cpp_define);
1324 case OPT_pedantic_errors:
1325 CPP_OPTION (pfile, pedantic_errors) = 1;
1328 CPP_OPTION (pfile, pedantic) = 1;
1331 CPP_OPTION (pfile, trigraphs) = 1;
1334 CPP_OPTION (pfile, cplusplus) = 1;
1335 CPP_OPTION (pfile, cplusplus_comments) = 1;
1338 CPP_OPTION (pfile, remap) = 1;
1341 CPP_OPTION (pfile, include_prefix) = arg;
1342 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1345 set_lang (pfile, CLK_GNUC89);
1347 case OPT_lang_cplusplus:
1348 set_lang (pfile, CLK_GNUCXX);
1351 set_lang (pfile, CLK_OBJC);
1353 case OPT_lang_objcplusplus:
1354 set_lang (pfile, CLK_OBJCXX);
1357 set_lang (pfile, CLK_ASM);
1359 case OPT_std_cplusplus98:
1360 set_lang (pfile, CLK_CXX98);
1363 set_lang (pfile, CLK_GNUC89);
1367 set_lang (pfile, CLK_GNUC99);
1369 case OPT_std_iso9899_199409:
1370 set_lang (pfile, CLK_STDC94);
1372 case OPT_std_iso9899_1990:
1375 set_lang (pfile, CLK_STDC89);
1377 case OPT_std_iso9899_199x:
1378 case OPT_std_iso9899_1999:
1381 set_lang (pfile, CLK_STDC99);
1384 /* -nostdinc causes no default include directories.
1385 You must specify all include-file directories with -I. */
1386 CPP_OPTION (pfile, no_standard_includes) = 1;
1388 case OPT_nostdincplusplus:
1389 /* -nostdinc++ causes no default C++-specific include directories. */
1390 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1393 if (CPP_OPTION (pfile, out_fname) == NULL)
1394 CPP_OPTION (pfile, out_fname) = arg;
1397 cpp_fatal (pfile, "Output filename specified twice");
1402 /* Args to -d specify what parts of macros to dump.
1403 Silently ignore unrecognised options; they may
1404 be aimed at the compiler proper. */
1408 while ((c = *arg++) != '\0')
1412 CPP_OPTION (pfile, dump_macros) = dump_only;
1413 CPP_OPTION (pfile, no_output) = 1;
1416 CPP_OPTION (pfile, dump_macros) = dump_names;
1419 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1422 CPP_OPTION (pfile, dump_includes) = 1;
1429 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1432 CPP_OPTION (pfile, print_deps) = 2;
1435 CPP_OPTION (pfile, print_deps) = 1;
1438 CPP_OPTION (pfile, deps_file) = arg;
1441 CPP_OPTION (pfile, deps_phony_targets) = 1;
1445 /* Add a target. -MQ quotes for Make. */
1446 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1449 /* -MD and -MMD for cpp0 are deprecated and undocumented
1450 (use -M or -MM with -MF instead), and probably should be
1451 removed with the next major GCC version. For the moment
1452 we allow these for the benefit of Automake 1.4, which
1453 uses these when dependency tracking is enabled. Automake
1454 1.5 will fix this. */
1456 CPP_OPTION (pfile, print_deps) = 2;
1457 CPP_OPTION (pfile, deps_file) = arg;
1460 CPP_OPTION (pfile, print_deps) = 1;
1461 CPP_OPTION (pfile, deps_file) = arg;
1467 /* -A with an argument beginning with '-' acts as
1468 #unassert on whatever immediately follows the '-'.
1469 If "-" is the whole argument, we eliminate all
1470 predefined macros and assertions, including those
1471 that were specified earlier on the command line.
1472 That way we can get rid of any that were passed
1473 automatically in from GCC. */
1477 struct pending_option *o1, *o2;
1479 o1 = pend->directive_head;
1486 pend->directive_head = NULL;
1487 pend->directive_tail = NULL;
1490 new_pending_directive (pend, arg + 1, cpp_unassert);
1493 new_pending_directive (pend, arg, cpp_assert);
1496 new_pending_directive (pend, arg, cpp_undef);
1498 case OPT_I: /* Add directory to path for includes. */
1499 if (!strcmp (arg, "-"))
1502 Use the preceding -I directories for #include "..."
1503 but not #include <...>.
1504 Don't search the directory of the present file
1505 for #include "...". (Note that -I. -I- is not the same as
1506 the default setup; -I. uses the compiler's working dir.) */
1507 if (! CPP_OPTION (pfile, ignore_srcdir))
1509 pend->quote_head = pend->brack_head;
1510 pend->quote_tail = pend->brack_tail;
1511 pend->brack_head = 0;
1512 pend->brack_tail = 0;
1513 CPP_OPTION (pfile, ignore_srcdir) = 1;
1517 cpp_fatal (pfile, "-I- specified twice");
1522 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1525 /* Add directory to beginning of system include path, as a system
1526 include directory. */
1527 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1531 struct pending_option *o = (struct pending_option *)
1532 xmalloc (sizeof (struct pending_option));
1535 /* This list has to be built in reverse order so that
1536 when cpp_start_read pushes all the -include files onto
1537 the buffer stack, they will be scanned in forward order. */
1538 o->next = pend->include_head;
1539 pend->include_head = o;
1544 struct pending_option *o = (struct pending_option *)
1545 xmalloc (sizeof (struct pending_option));
1549 APPEND (pend, imacros, o);
1552 case OPT_iwithprefix:
1553 /* Add directory to end of path for includes,
1554 with the default prefix at the front of its name. */
1556 case OPT_iwithprefixbefore:
1557 /* Add directory to main path for includes,
1558 with the default prefix at the front of its name. */
1565 if (CPP_OPTION (pfile, include_prefix) != 0)
1567 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1568 fname = xmalloc (ipl + len + 1);
1569 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1570 memcpy (fname + ipl, arg, len + 1);
1572 else if (cpp_GCC_INCLUDE_DIR_len)
1574 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1575 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1576 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1579 fname = xstrdup (arg);
1581 append_include_chain (pfile, fname,
1582 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1586 /* Add directory to end of path for includes. */
1587 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1590 /* Silently ignore unrecognised options. */
1591 if (!strcmp (argv[i], "-Wall"))
1593 CPP_OPTION (pfile, warn_trigraphs) = 1;
1594 CPP_OPTION (pfile, warn_comments) = 1;
1596 else if (!strcmp (argv[i], "-Wtraditional"))
1597 CPP_OPTION (pfile, warn_traditional) = 1;
1598 else if (!strcmp (argv[i], "-Wtrigraphs"))
1599 CPP_OPTION (pfile, warn_trigraphs) = 1;
1600 else if (!strcmp (argv[i], "-Wcomment"))
1601 CPP_OPTION (pfile, warn_comments) = 1;
1602 else if (!strcmp (argv[i], "-Wcomments"))
1603 CPP_OPTION (pfile, warn_comments) = 1;
1604 else if (!strcmp (argv[i], "-Wundef"))
1605 CPP_OPTION (pfile, warn_undef) = 1;
1606 else if (!strcmp (argv[i], "-Wimport"))
1607 CPP_OPTION (pfile, warn_import) = 1;
1608 else if (!strcmp (argv[i], "-Werror"))
1609 CPP_OPTION (pfile, warnings_are_errors) = 1;
1610 else if (!strcmp (argv[i], "-Wsystem-headers"))
1611 CPP_OPTION (pfile, warn_system_headers) = 1;
1612 else if (!strcmp (argv[i], "-Wno-traditional"))
1613 CPP_OPTION (pfile, warn_traditional) = 0;
1614 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1615 CPP_OPTION (pfile, warn_trigraphs) = 0;
1616 else if (!strcmp (argv[i], "-Wno-comment"))
1617 CPP_OPTION (pfile, warn_comments) = 0;
1618 else if (!strcmp (argv[i], "-Wno-comments"))
1619 CPP_OPTION (pfile, warn_comments) = 0;
1620 else if (!strcmp (argv[i], "-Wno-undef"))
1621 CPP_OPTION (pfile, warn_undef) = 0;
1622 else if (!strcmp (argv[i], "-Wno-import"))
1623 CPP_OPTION (pfile, warn_import) = 0;
1624 else if (!strcmp (argv[i], "-Wno-error"))
1625 CPP_OPTION (pfile, warnings_are_errors) = 0;
1626 else if (!strcmp (argv[i], "-Wno-system-headers"))
1627 CPP_OPTION (pfile, warn_system_headers) = 0;
1634 /* Handle command-line options in (argc, argv).
1635 Can be called multiple times, to handle multiple sets of options.
1636 Returns if an unrecognized option is seen.
1637 Returns number of strings consumed. */
1639 cpp_handle_options (pfile, argc, argv)
1645 int strings_processed;
1647 for (i = 0; i < argc; i += strings_processed)
1649 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1650 if (strings_processed == 0)
1657 /* Extra processing when all options are parsed, after all calls to
1658 cpp_handle_option[s]. Consistency checks etc. */
1660 cpp_post_options (pfile)
1663 if (pfile->print_version)
1665 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1666 #ifdef TARGET_VERSION
1669 fputc ('\n', stderr);
1672 /* Canonicalize in_fname and out_fname. We guarantee they are not
1673 NULL, and that the empty string represents stdin / stdout. */
1674 if (CPP_OPTION (pfile, in_fname) == NULL
1675 || !strcmp (CPP_OPTION (pfile, in_fname), "-"))
1676 CPP_OPTION (pfile, in_fname) = "";
1678 if (CPP_OPTION (pfile, out_fname) == NULL
1679 || !strcmp (CPP_OPTION (pfile, out_fname), "-"))
1680 CPP_OPTION (pfile, out_fname) = "";
1682 /* -Wtraditional is not useful in C++ mode. */
1683 if (CPP_OPTION (pfile, cplusplus))
1684 CPP_OPTION (pfile, warn_traditional) = 0;
1686 /* Set this if it hasn't been set already. */
1687 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1688 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1690 /* Permanently disable macro expansion if we are rescanning
1691 preprocessed text. */
1692 if (CPP_OPTION (pfile, preprocessed))
1693 pfile->state.prevent_expansion = 1;
1695 /* We need to do this after option processing and before
1696 cpp_start_read, as cppmain.c relies on the options->no_output to
1697 set its callbacks correctly before calling cpp_start_read. */
1698 init_dependency_output (pfile);
1700 /* After checking the environment variables, check if -M or -MM has
1701 not been specified, but other -M options have. */
1702 if (CPP_OPTION (pfile, print_deps) == 0 &&
1703 (CPP_OPTION (pfile, print_deps_missing_files)
1704 || CPP_OPTION (pfile, deps_file)
1705 || CPP_OPTION (pfile, deps_phony_targets)))
1706 cpp_fatal (pfile, "you must additionally specify either -M or -MM");
1709 /* Set up dependency-file output. */
1711 init_dependency_output (pfile)
1714 char *spec, *s, *output_file;
1716 /* Either of two environment variables can specify output of deps.
1717 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1718 where OUTPUT_FILE is the file to write deps info to
1719 and DEPS_TARGET is the target to mention in the deps. */
1721 if (CPP_OPTION (pfile, print_deps) == 0)
1723 spec = getenv ("DEPENDENCIES_OUTPUT");
1725 CPP_OPTION (pfile, print_deps) = 1;
1728 spec = getenv ("SUNPRO_DEPENDENCIES");
1730 CPP_OPTION (pfile, print_deps) = 2;
1735 /* Find the space before the DEPS_TARGET, if there is one. */
1736 s = strchr (spec, ' ');
1739 /* Let the caller perform MAKE quoting. */
1740 deps_add_target (pfile->deps, s + 1, 0);
1741 output_file = (char *) xmalloc (s - spec + 1);
1742 memcpy (output_file, spec, s - spec);
1743 output_file[s - spec] = 0;
1748 /* Command line overrides environment variables. */
1749 if (CPP_OPTION (pfile, deps_file) == 0)
1750 CPP_OPTION (pfile, deps_file) = output_file;
1751 CPP_OPTION (pfile, print_deps_append) = 1;
1754 /* If dependencies go to standard output, or -MG is used, we should
1755 suppress output. The user may be requesting other stuff to
1756 stdout, with -dM, -v etc. We let them shoot themselves in the
1758 if (CPP_OPTION (pfile, deps_file) == 0
1759 || CPP_OPTION (pfile, print_deps_missing_files))
1760 CPP_OPTION (pfile, no_output) = 1;
1766 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1767 /* To keep the lines from getting too long for some compilers, limit
1768 to about 500 characters (6 lines) per chunk. */
1771 -include <file> Include the contents of <file> before other files\n\
1772 -imacros <file> Accept definition of macros in <file>\n\
1773 -iprefix <path> Specify <path> as a prefix for next two options\n\
1774 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1775 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1776 -isystem <dir> Add <dir> to the start of the system include path\n\
1779 -idirafter <dir> Add <dir> to the end of the system include path\n\
1780 -I <dir> Add <dir> to the end of the main include path\n\
1781 -I- Fine-grained include path control; see info docs\n\
1782 -nostdinc Do not search system include directories\n\
1783 (dirs specified with -isystem will still be used)\n\
1784 -nostdinc++ Do not search system include directories for C++\n\
1785 -o <file> Put output into <file>\n\
1788 -pedantic Issue all warnings demanded by strict ISO C\n\
1789 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1790 -trigraphs Support ISO C trigraphs\n\
1791 -lang-c Assume that the input sources are in C\n\
1792 -lang-c89 Assume that the input sources are in C89\n\
1795 -lang-c++ Assume that the input sources are in C++\n\
1796 -lang-objc Assume that the input sources are in ObjectiveC\n\
1797 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1798 -lang-asm Assume that the input sources are in assembler\n\
1801 -std=<std name> Specify the conformance standard; one of:\n\
1802 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1803 iso9899:199409, iso9899:1999\n\
1804 -+ Allow parsing of C++ style features\n\
1805 -w Inhibit warning messages\n\
1806 -Wtrigraphs Warn if trigraphs are encountered\n\
1807 -Wno-trigraphs Do not warn about trigraphs\n\
1808 -Wcomment{s} Warn if one comment starts inside another\n\
1811 -Wno-comment{s} Do not warn about comments\n\
1812 -Wtraditional Warn about features not present in traditional C\n\
1813 -Wno-traditional Do not warn about traditional C\n\
1814 -Wundef Warn if an undefined macro is used by #if\n\
1815 -Wno-undef Do not warn about testing undefined macros\n\
1816 -Wimport Warn about the use of the #import directive\n\
1819 -Wno-import Do not warn about the use of #import\n\
1820 -Werror Treat all warnings as errors\n\
1821 -Wno-error Do not treat warnings as errors\n\
1822 -Wsystem-headers Do not suppress warnings from system headers\n\
1823 -Wno-system-headers Suppress warnings from system headers\n\
1824 -Wall Enable all preprocessor warnings\n\
1827 -M Generate make dependencies\n\
1828 -MM As -M, but ignore system header files\n\
1829 -MF <file> Write dependency output to the given file\n\
1830 -MG Treat missing header file as generated files\n\
1833 -MP Generate phony targets for all headers\n\
1834 -MQ <target> Add a MAKE-quoted target\n\
1835 -MT <target> Add an unquoted target\n\
1838 -D<macro> Define a <macro> with string '1' as its value\n\
1839 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1840 -A<question> (<answer>) Assert the <answer> to <question>\n\
1841 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1842 -U<macro> Undefine <macro> \n\
1843 -v Display the version number\n\
1846 -H Print the name of header files as they are used\n\
1847 -C Do not discard comments\n\
1848 -dM Display a list of macro definitions active at end\n\
1849 -dD Preserve macro definitions in output\n\
1850 -dN As -dD except that only the names are preserved\n\
1851 -dI Include #include directives in the output\n\
1854 -fpreprocessed Treat the input file as already preprocessed\n\
1855 -ftabstop=<number> Distance between tab stops for column reporting\n\
1856 -P Do not generate #line directives\n\
1857 -$ Do not allow '$' in identifiers\n\
1858 -remap Remap file names when including files.\n\
1859 --version Display version information\n\
1860 -h or --help Display this information\n\