2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000 Free Software Foundation, Inc.
4 Contributed by Per Bothner, 1994-95.
5 Based on CCCP program by Paul Rubin, June 1986
6 Adapted to ANSI C, Richard Stallman, Jan 1987
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 #include "cppdefault.h"
33 /* Predefined symbols, built-in macros, and the default include path. */
35 #ifndef GET_ENV_PATH_LIST
36 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
39 /* Windows does not natively support inodes, and neither does MSDOS.
40 Cygwin's emulation can generate non-unique inodes, so don't use it.
41 VMS has non-numeric inodes. */
43 #define INO_T_EQ(a, b) (!memcmp (&(a), &(b), sizeof (a)))
44 #elif (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
45 #define INO_T_EQ(a, b) 0
47 #define INO_T_EQ(a, b) ((a) == (b))
50 /* Internal structures and prototypes. */
52 /* A `struct pending_option' remembers one -D, -A, -U, -include, or -imacros
53 switch. There are four lists: one for -D and -U, one for -A, one
54 for -include, one for -imacros. `undef' is set for -U, clear for
55 -D, ignored for the others.
56 (Future: add an equivalent of -U for -A) */
58 typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
61 struct pending_option *next;
63 cl_directive_handler handler;
66 /* The `pending' structure accumulates all the options that are not
67 actually processed until we hit cpp_start_read. It consists of
68 several lists, one for each type of option. We keep both head and
69 tail pointers for quick insertion. */
72 struct pending_option *directive_head, *directive_tail;
74 struct file_name_list *quote_head, *quote_tail;
75 struct file_name_list *brack_head, *brack_tail;
76 struct file_name_list *systm_head, *systm_tail;
77 struct file_name_list *after_head, *after_tail;
79 struct pending_option *imacros_head, *imacros_tail;
80 struct pending_option *include_head, *include_tail;
84 #define APPEND(pend, list, elt) \
85 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
86 else (pend)->list##_tail->next = (elt); \
87 (pend)->list##_tail = (elt); \
90 #define APPEND(pend, list, elt) \
91 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
92 else (pend)->list/**/_tail->next = (elt); \
93 (pend)->list/**/_tail = (elt); \
97 static void print_help PARAMS ((void));
98 static void path_include PARAMS ((cpp_reader *,
101 static void initialize_builtins PARAMS ((cpp_reader *));
102 static void append_include_chain PARAMS ((cpp_reader *,
103 struct cpp_pending *,
105 static void merge_include_chains PARAMS ((cpp_reader *));
107 static void initialize_dependency_output PARAMS ((cpp_reader *));
108 static void initialize_standard_includes PARAMS ((cpp_reader *));
109 static void new_pending_directive PARAMS ((struct cpp_pending *,
111 cl_directive_handler));
113 static int opt_comp PARAMS ((const void *, const void *));
115 static int parse_option PARAMS ((const char *));
117 /* Fourth argument to append_include_chain: chain to use */
118 enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };
120 /* If we have designated initializers (GCC >2.7) this table can be
121 initialized, constant data. Otherwise, it has to be filled in at
124 #if (GCC_VERSION >= 2007)
125 #define init_IStable() /* nothing */
126 #define ISTABLE __extension__ const unsigned char _cpp_IStable[256] = {
128 #define s(p, v) [p] = v,
130 #define ISTABLE unsigned char _cpp_IStable[256] = { 0 }; \
131 static void init_IStable PARAMS ((void)) { \
132 unsigned char *x = _cpp_IStable;
134 #define s(p, v) x[p] = v;
137 #define A(x) s(x, ISidnum|ISidstart)
138 #define N(x) s(x, ISidnum|ISnumstart)
139 #define H(x) s(x, IShspace|ISspace)
140 #define V(x) s(x, ISvspace|ISspace)
141 #define S(x) s(x, ISspace)
146 A('a') A('b') A('c') A('d') A('e') A('f') A('g') A('h') A('i')
147 A('j') A('k') A('l') A('m') A('n') A('o') A('p') A('q') A('r')
148 A('s') A('t') A('u') A('v') A('w') A('x') A('y') A('z')
150 A('A') A('B') A('C') A('D') A('E') A('F') A('G') A('H') A('I')
151 A('J') A('K') A('L') A('M') A('N') A('O') A('P') A('Q') A('R')
152 A('S') A('T') A('U') A('V') A('W') A('X') A('Y') A('Z')
154 N('1') N('2') N('3') N('4') N('5') N('6') N('7') N('8') N('9') N('0')
160 S('\0') S('\v') S('\f')
172 /* Given a colon-separated list of file names PATH,
173 add all the names to the search path for include files. */
176 path_include (pfile, pend, list, path)
178 struct cpp_pending *pend;
188 /* Find the end of this name. */
190 while (*q != 0 && *q != PATH_SEPARATOR) q++;
193 /* An empty name in the path stands for the current directory. */
194 name = (char *) xmalloc (2);
200 /* Otherwise use the directory that is named. */
201 name = (char *) xmalloc (q - p + 1);
202 memcpy (name, p, q - p);
206 append_include_chain (pfile, pend, name, path, 0);
208 /* Advance past this name. */
216 /* Append DIR to include path PATH. DIR must be permanently allocated
219 append_include_chain (pfile, pend, dir, path, cxx_aware)
221 struct cpp_pending *pend;
226 struct file_name_list *new;
230 _cpp_simplify_pathname (dir);
233 /* Dirs that don't exist are silently ignored. */
235 cpp_notice_from_errno (pfile, dir);
236 else if (CPP_OPTION (pfile, verbose))
237 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
241 if (!S_ISDIR (st.st_mode))
243 cpp_notice (pfile, "%s: Not a directory", dir);
248 if (len > pfile->max_include_len)
249 pfile->max_include_len = len;
251 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
254 new->ino = st.st_ino;
255 new->dev = st.st_dev;
257 new->sysp = cxx_aware ? 1 : 2;
260 new->name_map = NULL;
266 case QUOTE: APPEND (pend, quote, new); break;
267 case BRACKET: APPEND (pend, brack, new); break;
268 case SYSTEM: APPEND (pend, systm, new); break;
269 case AFTER: APPEND (pend, after, new); break;
273 /* Merge the four include chains together in the order quote, bracket,
274 system, after. Remove duplicate dirs (as determined by
275 INO_T_EQ()). The system_include and after_include chains are never
276 referred to again after this function; all access is through the
277 bracket_include path.
279 For the future: Check if the directory is empty (but
280 how?) and possibly preload the include hash. */
283 merge_include_chains (pfile)
286 struct file_name_list *prev, *cur, *other;
287 struct file_name_list *quote, *brack, *systm, *after;
288 struct file_name_list *qtail, *btail, *stail, *atail;
290 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
292 qtail = pend->quote_tail;
293 btail = pend->brack_tail;
294 stail = pend->systm_tail;
295 atail = pend->after_tail;
297 quote = pend->quote_head;
298 brack = pend->brack_head;
299 systm = pend->systm_head;
300 after = pend->after_head;
302 /* Paste together bracket, system, and after include chains. */
312 /* This is a bit tricky.
313 First we drop dupes from the quote-include list.
314 Then we drop dupes from the bracket-include list.
315 Finally, if qtail and brack are the same directory,
318 We can't just merge the lists and then uniquify them because
319 then we may lose directories from the <> search path that should
320 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
321 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
322 -Ibar -I- -Ifoo -Iquux.
324 Note that this algorithm is quadratic in the number of -I switches,
325 which is acceptable since there aren't usually that many of them. */
327 for (cur = quote, prev = NULL; cur; cur = cur->next)
329 for (other = quote; other != cur; other = other->next)
330 if (INO_T_EQ (cur->ino, other->ino)
331 && cur->dev == other->dev)
333 if (CPP_OPTION (pfile, verbose))
334 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"),
337 prev->next = cur->next;
347 for (cur = brack; cur; cur = cur->next)
349 for (other = brack; other != cur; other = other->next)
350 if (INO_T_EQ (cur->ino, other->ino)
351 && cur->dev == other->dev)
353 if (CPP_OPTION (pfile, verbose))
354 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"),
357 prev->next = cur->next;
368 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
372 if (CPP_OPTION (pfile, verbose))
373 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"),
383 while (cur->next != qtail)
386 if (CPP_OPTION (pfile, verbose))
387 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"),
400 CPP_OPTION (pfile, quote_include) = quote;
401 CPP_OPTION (pfile, bracket_include) = brack;
408 /* For non-ASCII hosts, the array needs to be sorted at runtime. */
409 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
412 /* Set up the IStable. This doesn't do anything if we were compiled
413 with a compiler that supports C99 designated initializers. */
417 /* Initialize a cpp_reader structure. */
419 cpp_reader_init (pfile)
422 memset ((char *) pfile, 0, sizeof (cpp_reader));
424 CPP_OPTION (pfile, dollars_in_ident) = 1;
425 CPP_OPTION (pfile, cplusplus_comments) = 1;
426 CPP_OPTION (pfile, warn_import) = 1;
427 CPP_OPTION (pfile, warn_paste) = 1;
428 CPP_OPTION (pfile, digraphs) = 1;
429 CPP_OPTION (pfile, discard_comments) = 1;
430 CPP_OPTION (pfile, show_column) = 1;
431 CPP_OPTION (pfile, tabstop) = 8;
433 CPP_OPTION (pfile, pending) =
434 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
436 _cpp_init_macros (pfile);
437 _cpp_init_stacks (pfile);
438 _cpp_init_includes (pfile);
439 _cpp_init_internal_pragmas (pfile);
442 /* Initialize a cpp_printer structure. As a side effect, open the
445 cpp_printer_init (pfile, print)
449 memset (print, '\0', sizeof (cpp_printer));
450 if (CPP_OPTION (pfile, out_fname) == NULL)
451 CPP_OPTION (pfile, out_fname) = "";
453 if (CPP_OPTION (pfile, out_fname)[0] == '\0')
454 print->outf = stdout;
457 print->outf = fopen (CPP_OPTION (pfile, out_fname), "w");
460 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
467 /* Free resources used by PFILE.
468 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
473 while (CPP_BUFFER (pfile) != NULL)
474 cpp_pop_buffer (pfile);
477 deps_free (pfile->deps);
479 if (pfile->spec_nodes)
480 free (pfile->spec_nodes);
482 _cpp_free_temp_tokens (pfile);
483 _cpp_cleanup_includes (pfile);
484 _cpp_cleanup_stacks (pfile);
485 _cpp_cleanup_macros (pfile);
489 /* This structure defines one built-in macro. A node of type TYPE will
490 be entered in the macro hash table under the name NAME, with value
491 VALUE (if any). If TYPE is T_OPERATOR, the CODE field is used instead.
493 Two values are not compile time constants, so we tag
494 them in the FLAGS field instead:
495 VERS value is the global version_string, quoted
496 ULP value is the global user_label_prefix
498 Also, macros with CPLUS set in the flags field are entered only for C++.
507 unsigned short flags;
514 #define B(n, t) { U n, 0, 0, t, 0, sizeof n - 1 }
515 #define C(n, v) { U n, v, 0, T_MACRO, 0, sizeof n - 1 }
516 #define X(n, f) { U n, 0, 0, T_MACRO, f, sizeof n - 1 }
517 #define O(n, c, f) { U n, 0, c, T_OPERATOR, f, sizeof n - 1 }
518 static const struct builtin builtin_array[] =
520 B("__TIME__", T_TIME),
521 B("__DATE__", T_DATE),
522 B("__FILE__", T_FILE),
523 B("__BASE_FILE__", T_BASE_FILE),
524 B("__LINE__", T_SPECLINE),
525 B("__INCLUDE_LEVEL__", T_INCLUDE_LEVEL),
526 B("__STDC__", T_STDC),
528 X("__VERSION__", VERS),
529 X("__USER_LABEL_PREFIX__", ULP),
530 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
531 C("__HAVE_BUILTIN_SETJMP__", "1"),
532 #ifndef NO_BUILTIN_SIZE_TYPE
533 C("__SIZE_TYPE__", SIZE_TYPE),
535 #ifndef NO_BUILTIN_PTRDIFF_TYPE
536 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
538 #ifndef NO_BUILTIN_WCHAR_TYPE
539 C("__WCHAR_TYPE__", WCHAR_TYPE),
541 #ifndef NO_BUILTIN_WINT_TYPE
542 C("__WINT_TYPE__", WINT_TYPE),
545 /* Named operators known to the preprocessor. These cannot be #defined
546 and always have their stated meaning. They are treated like normal
547 string tokens except for the type code and the meaning. Most of them
548 are only for C++ (but see iso646.h). */
549 O("defined", CPP_DEFINED, 0),
550 O("and", CPP_AND_AND, CPLUS),
551 O("and_eq", CPP_AND_EQ, CPLUS),
552 O("bitand", CPP_AND, CPLUS),
553 O("bitor", CPP_OR, CPLUS),
554 O("compl", CPP_COMPL, CPLUS),
555 O("not", CPP_NOT, CPLUS),
556 O("not_eq", CPP_NOT_EQ, CPLUS),
557 O("or", CPP_OR_OR, CPLUS),
558 O("or_eq", CPP_OR_EQ, CPLUS),
559 O("xor", CPP_XOR, CPLUS),
560 O("xor_eq", CPP_XOR_EQ, CPLUS),
565 #define builtin_array_end \
566 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
568 /* Subroutine of cpp_start_read; reads the builtins table above and
569 enters the macros into the hash table. */
571 initialize_builtins (pfile)
574 const struct builtin *b;
575 for(b = builtin_array; b < builtin_array_end; b++)
577 if (b->flags & CPLUS && ! CPP_OPTION (pfile, cplusplus))
580 if (b->type == T_MACRO)
587 /* Allocate enough space for 'name="value"\0'. */
588 str = xmalloc (b->len + strlen (version_string) + 4);
589 sprintf (str, "%s=\"%s\"", b->name, version_string);
594 val = user_label_prefix;
598 /* Allocate enough space for "name=value\0". */
599 str = xmalloc (b->len + strlen (val) + 2);
600 sprintf(str, "%s=%s", b->name, val);
603 cpp_define (pfile, str);
608 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
610 if (b->type == T_OPERATOR)
611 hp->value.code = b->code;
617 #undef builtin_array_end
619 /* Another subroutine of cpp_start_read. This one sets up to do
620 dependency-file output. */
622 initialize_dependency_output (pfile)
625 char *spec, *s, *output_file;
627 /* Either of two environment variables can specify output of deps.
628 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
629 where OUTPUT_FILE is the file to write deps info to
630 and DEPS_TARGET is the target to mention in the deps. */
632 if (CPP_OPTION (pfile, print_deps) == 0)
634 spec = getenv ("DEPENDENCIES_OUTPUT");
636 CPP_OPTION (pfile, print_deps) = 1;
639 spec = getenv ("SUNPRO_DEPENDENCIES");
641 CPP_OPTION (pfile, print_deps) = 2;
646 /* Find the space before the DEPS_TARGET, if there is one. */
647 s = strchr (spec, ' ');
650 CPP_OPTION (pfile, deps_target) = s + 1;
651 output_file = (char *) xmalloc (s - spec + 1);
652 memcpy (output_file, spec, s - spec);
653 output_file[s - spec] = 0;
657 CPP_OPTION (pfile, deps_target) = 0;
661 CPP_OPTION (pfile, deps_file) = output_file;
662 CPP_OPTION (pfile, print_deps_append) = 1;
665 pfile->deps = deps_init ();
667 /* Print the expected object file name as the target of this Make-rule. */
668 if (CPP_OPTION (pfile, deps_target))
669 deps_add_target (pfile->deps, CPP_OPTION (pfile, deps_target));
670 else if (*CPP_OPTION (pfile, in_fname) == 0)
671 deps_add_target (pfile->deps, "-");
673 deps_calc_target (pfile->deps, CPP_OPTION (pfile, in_fname));
675 if (CPP_OPTION (pfile, in_fname))
676 deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
679 /* And another subroutine. This one sets up the standard include path. */
681 initialize_standard_includes (pfile)
685 const struct default_include *p;
686 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
688 /* Several environment variables may add to the include search path.
689 CPATH specifies an additional list of directories to be searched
690 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
691 etc. specify an additional list of directories to be searched as
692 if specified with -isystem, for the language indicated. */
694 GET_ENV_PATH_LIST (path, "CPATH");
695 if (path != 0 && *path != 0)
696 path_include (pfile, CPP_OPTION (pfile, pending), path, BRACKET);
698 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
701 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
704 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
707 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
710 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
713 if (path != 0 && *path != 0)
714 path_include (pfile, CPP_OPTION (pfile, pending), path, SYSTEM);
716 /* Search "translated" versions of GNU directories.
717 These have /usr/local/lib/gcc... replaced by specd_prefix. */
718 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
720 /* Remove the `include' from /usr/local/lib/gcc.../include.
721 GCC_INCLUDE_DIR will always end in /include. */
722 int default_len = cpp_GCC_INCLUDE_DIR_len;
723 char *default_prefix = (char *) alloca (default_len + 1);
724 int specd_len = strlen (specd_prefix);
726 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
727 default_prefix[default_len] = '\0';
729 for (p = cpp_include_defaults; p->fname; p++)
731 /* Some standard dirs are only for C++. */
733 || (CPP_OPTION (pfile, cplusplus)
734 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
736 /* Does this dir start with the prefix? */
737 if (!strncmp (p->fname, default_prefix, default_len))
739 /* Yes; change prefix and add to search list. */
740 int flen = strlen (p->fname);
741 int this_len = specd_len + flen - default_len;
742 char *str = (char *) xmalloc (this_len + 1);
743 memcpy (str, specd_prefix, specd_len);
744 memcpy (str + specd_len,
745 p->fname + default_len,
746 flen - default_len + 1);
748 append_include_chain (pfile, CPP_OPTION (pfile, pending),
749 str, SYSTEM, p->cxx_aware);
755 /* Search ordinary names for GNU include directories. */
756 for (p = cpp_include_defaults; p->fname; p++)
758 /* Some standard dirs are only for C++. */
760 || (CPP_OPTION (pfile, cplusplus)
761 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
763 /* XXX Potential memory leak! */
764 char *str = xstrdup (update_path (p->fname, p->component));
765 append_include_chain (pfile, CPP_OPTION (pfile, pending),
766 str, SYSTEM, p->cxx_aware);
771 /* This is called after options have been processed.
772 * Check options for consistency, and setup for processing input
773 * from the file named FNAME. (Use standard input if FNAME==NULL.)
774 * Return 1 on success, 0 on failure.
778 cpp_start_read (pfile, print, fname)
783 struct pending_option *p, *q;
785 /* -MG doesn't select the form of output and must be specified with one of
786 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
787 inhibit compilation. */
788 if (CPP_OPTION (pfile, print_deps_missing_files)
789 && (CPP_OPTION (pfile, print_deps) == 0
790 || !CPP_OPTION (pfile, no_output)))
792 cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
796 /* -Wtraditional is not useful in C++ mode. */
797 if (CPP_OPTION (pfile, cplusplus))
798 CPP_OPTION (pfile, warn_traditional) = 0;
800 /* Do not warn about invalid token pasting if -lang-asm. */
801 if (CPP_OPTION (pfile, lang_asm))
802 CPP_OPTION (pfile, warn_paste) = 0;
804 /* Set this if it hasn't been set already. */
805 if (user_label_prefix == NULL)
806 user_label_prefix = USER_LABEL_PREFIX;
808 /* Figure out if we need to save function macro parameter spellings.
809 We don't use CPP_PEDANTIC() here because that depends on whether
810 or not the current file is a system header, and there is no
812 pfile->save_parameter_spellings =
813 CPP_OPTION (pfile, pedantic)
814 || CPP_OPTION (pfile, debug_output)
815 || CPP_OPTION (pfile, dump_macros) == dump_definitions
816 || CPP_OPTION (pfile, dump_macros) == dump_only;
818 /* Set up the tables used by read_and_prescan. */
819 _cpp_init_input_buffer (pfile);
821 /* Set up the include search path now. */
822 if (! CPP_OPTION (pfile, no_standard_includes))
823 initialize_standard_includes (pfile);
825 merge_include_chains (pfile);
827 /* With -v, print the list of dirs to search. */
828 if (CPP_OPTION (pfile, verbose))
830 struct file_name_list *l;
831 fprintf (stderr, _("#include \"...\" search starts here:\n"));
832 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
834 if (l == CPP_OPTION (pfile, bracket_include))
835 fprintf (stderr, _("#include <...> search starts here:\n"));
836 fprintf (stderr, " %s\n", l->name);
838 fprintf (stderr, _("End of search list.\n"));
841 /* Open the main input file. This must be done early, so we have a
842 buffer to stand on. */
843 if (CPP_OPTION (pfile, in_fname) == NULL
844 || *CPP_OPTION (pfile, in_fname) == 0)
846 CPP_OPTION (pfile, in_fname) = fname;
847 if (CPP_OPTION (pfile, in_fname) == NULL)
848 CPP_OPTION (pfile, in_fname) = "";
850 if (CPP_OPTION (pfile, out_fname) == NULL)
851 CPP_OPTION (pfile, out_fname) = "";
853 if (!cpp_read_file (pfile, fname))
856 initialize_dependency_output (pfile);
858 /* Install __LINE__, etc. */
859 initialize_builtins (pfile);
861 /* Do -U's, -D's and -A's in the order they were seen. */
862 p = CPP_OPTION (pfile, pending)->directive_head;
865 (*p->handler) (pfile, p->arg);
870 pfile->done_initializing = 1;
872 /* We start at line 1 of the main input file. */
875 print->last_fname = CPP_BUFFER (pfile)->nominal_fname;
879 /* The -imacros files can be scanned now, but the -include files
880 have to be pushed onto the include stack and processed later,
881 in the main loop calling cpp_get_token. */
883 p = CPP_OPTION (pfile, pending)->imacros_head;
886 if (cpp_read_file (pfile, p->arg))
887 cpp_scan_buffer_nooutput (pfile);
893 p = CPP_OPTION (pfile, pending)->include_head;
896 cpp_read_file (pfile, p->arg);
902 free (CPP_OPTION (pfile, pending));
903 CPP_OPTION (pfile, pending) = NULL;
908 /* This is called at the end of preprocessing. It pops the
909 last buffer and writes dependency output. It should also
910 clear macro definitions, such that you could call cpp_start_read
911 with a new filename to restart processing. */
913 cpp_finish (pfile, print)
917 if (CPP_BUFFER (pfile))
919 cpp_ice (pfile, "buffers still stacked in cpp_finish");
920 while (CPP_BUFFER (pfile))
921 cpp_pop_buffer (pfile);
924 /* Don't write the deps file if preprocessing has failed. */
925 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
927 /* Stream on which to print the dependency information. */
928 FILE *deps_stream = 0;
929 const char *deps_mode
930 = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
931 if (CPP_OPTION (pfile, deps_file) == 0)
932 deps_stream = stdout;
935 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
936 if (deps_stream == 0)
937 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
941 deps_write (pfile->deps, deps_stream, 72);
942 if (CPP_OPTION (pfile, deps_file))
944 if (ferror (deps_stream) || fclose (deps_stream) != 0)
945 cpp_fatal (pfile, "I/O error on output");
950 /* Flush any pending output. */
953 if (pfile->need_newline)
954 putc ('\n', print->outf);
955 if (ferror (print->outf) || fclose (print->outf))
956 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
959 /* Report on headers that could use multiple include guards. */
960 if (CPP_OPTION (pfile, print_include_names))
961 _cpp_report_missing_guards (pfile);
965 new_pending_directive (pend, text, handler)
966 struct cpp_pending *pend;
968 cl_directive_handler handler;
970 struct pending_option *o = (struct pending_option *)
971 xmalloc (sizeof (struct pending_option));
975 o->handler = handler;
976 APPEND (pend, directive, o);
979 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
980 I.e. a const string initializer with parens around it. That is
981 what N_("string") resolves to, so we make no_* be macros instead. */
982 #define no_arg N_("Argument missing after %s")
983 #define no_ass N_("Assertion missing after %s")
984 #define no_dir N_("Directory name missing after %s")
985 #define no_fil N_("File name missing after %s")
986 #define no_mac N_("Macro name missing after %s")
987 #define no_pth N_("Path name missing after %s")
988 #define no_num N_("Number missing after %s")
990 /* This is the list of all command line options, with the leading
991 "-" removed. It must be sorted in ASCII collating order. */
992 #define COMMAND_LINE_OPTIONS \
993 DEF_OPT("", 0, OPT_stdin_stdout) \
994 DEF_OPT("$", 0, OPT_dollar) \
995 DEF_OPT("+", 0, OPT_plus) \
996 DEF_OPT("-help", 0, OPT__help) \
997 DEF_OPT("-version", 0, OPT__version) \
998 DEF_OPT("A", no_ass, OPT_A) \
999 DEF_OPT("C", 0, OPT_C) \
1000 DEF_OPT("D", no_mac, OPT_D) \
1001 DEF_OPT("H", 0, OPT_H) \
1002 DEF_OPT("I", no_dir, OPT_I) \
1003 DEF_OPT("M", 0, OPT_M) \
1004 DEF_OPT("MD", no_fil, OPT_MD) \
1005 DEF_OPT("MG", 0, OPT_MG) \
1006 DEF_OPT("MM", 0, OPT_MM) \
1007 DEF_OPT("MMD", no_fil, OPT_MMD) \
1008 DEF_OPT("P", 0, OPT_P) \
1009 DEF_OPT("U", no_mac, OPT_U) \
1010 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1011 DEF_OPT("d", no_arg, OPT_d) \
1012 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1013 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1014 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1015 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1016 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1017 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1018 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1019 DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
1020 DEF_OPT("h", 0, OPT_h) \
1021 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1022 DEF_OPT("imacros", no_fil, OPT_imacros) \
1023 DEF_OPT("include", no_fil, OPT_include) \
1024 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1025 DEF_OPT("isystem", no_dir, OPT_isystem) \
1026 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1027 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1028 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1029 DEF_OPT("lang-c", 0, OPT_lang_c) \
1030 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1031 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1032 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1033 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1034 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1035 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1036 DEF_OPT("o", no_fil, OPT_o) \
1037 DEF_OPT("pedantic", 0, OPT_pedantic) \
1038 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1039 DEF_OPT("remap", 0, OPT_remap) \
1040 DEF_OPT("std=c89", 0, OPT_std_c89) \
1041 DEF_OPT("std=c99", 0, OPT_std_c99) \
1042 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1043 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1044 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1045 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1046 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1047 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1048 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1049 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1050 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1051 DEF_OPT("v", 0, OPT_v) \
1052 DEF_OPT("w", 0, OPT_w)
1054 #define DEF_OPT(text, msg, code) code,
1057 COMMAND_LINE_OPTIONS
1064 const char *opt_text;
1067 enum opt_code opt_code;
1070 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1072 static struct cl_option cl_options[] =
1074 static const struct cl_option cl_options[] =
1077 COMMAND_LINE_OPTIONS
1080 #undef COMMAND_LINE_OPTIONS
1082 /* Perform a binary search to find which, if any, option the given
1083 command-line matches. Returns its index in the option array,
1084 negative on failure. Complications arise since some options can be
1085 suffixed with an argument, and multiple complete matches can occur,
1086 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1087 accept options beginning with -g and -W that we do not recognise,
1088 but not to swallow any subsequent command line argument; these are
1089 handled as special cases in cpp_handle_option */
1091 parse_option (input)
1094 unsigned int md, mn, mx;
1105 opt_len = cl_options[md].opt_len;
1106 comp = strncmp (input, cl_options[md].opt_text, opt_len);
1114 if (input[opt_len] == '\0')
1116 /* We were passed more text. If the option takes an argument,
1117 we may match a later option or we may have been passed the
1118 argument. The longest possible option match succeeds.
1119 If the option takes no arguments we have not matched and
1120 continue the search (e.g. input="stdc++" match was "stdc") */
1122 if (cl_options[md].msg)
1124 /* Scan forwards. If we get an exact match, return it.
1125 Otherwise, return the longest option-accepting match.
1126 This loops no more than twice with current options */
1128 for (; mn < N_OPTS; mn++)
1130 opt_len = cl_options[mn].opt_len;
1131 if (strncmp (input, cl_options[mn].opt_text, opt_len))
1133 if (input[opt_len] == '\0')
1135 if (cl_options[mn].msg)
1146 /* Handle one command-line option in (argc, argv).
1147 Can be called multiple times, to handle multiple sets of options.
1148 Returns number of strings consumed. */
1151 cpp_handle_option (pfile, argc, argv)
1157 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1159 if (argv[i][0] != '-')
1161 if (CPP_OPTION (pfile, out_fname) != NULL)
1162 cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
1164 else if (CPP_OPTION (pfile, in_fname) != NULL)
1165 CPP_OPTION (pfile, out_fname) = argv[i];
1167 CPP_OPTION (pfile, in_fname) = argv[i];
1171 enum opt_code opt_code;
1173 const char *arg = 0;
1176 opt_index = parse_option (&argv[i][1]);
1180 opt_code = cl_options[opt_index].opt_code;
1181 if (cl_options[opt_index].msg)
1183 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1185 /* Yuk. Special case for -g and -W as they must not swallow
1186 up any following argument. If this becomes common, add
1187 another field to the cl_options table */
1188 if (arg[0] == '\0' && !(opt_code == OPT_g || opt_code == OPT_W))
1193 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1201 case N_OPTS: /* shut GCC up */
1203 case OPT_fleading_underscore:
1204 user_label_prefix = "_";
1206 case OPT_fno_leading_underscore:
1207 user_label_prefix = "";
1209 case OPT_fpreprocessed:
1210 CPP_OPTION (pfile, preprocessed) = 1;
1212 case OPT_fno_preprocessed:
1213 CPP_OPTION (pfile, preprocessed) = 0;
1215 case OPT_fshow_column:
1216 CPP_OPTION (pfile, show_column) = 1;
1218 case OPT_fno_show_column:
1219 CPP_OPTION (pfile, show_column) = 0;
1222 /* Silently ignore empty string, non-longs and silly values. */
1226 long tabstop = strtol (arg, &endptr, 10);
1227 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1228 CPP_OPTION (pfile, tabstop) = tabstop;
1232 CPP_OPTION (pfile, inhibit_warnings) = 1;
1234 case OPT_g: /* Silently ignore anything but -g3 */
1235 if (!strcmp(&argv[i][2], "3"))
1236 CPP_OPTION (pfile, debug_output) = 1;
1244 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1248 CPP_OPTION (pfile, discard_comments) = 0;
1251 CPP_OPTION (pfile, no_line_commands) = 1;
1253 case OPT_dollar: /* Don't include $ in identifiers. */
1254 CPP_OPTION (pfile, dollars_in_ident) = 0;
1257 CPP_OPTION (pfile, print_include_names) = 1;
1260 new_pending_directive (pend, arg, cpp_define);
1262 case OPT_pedantic_errors:
1263 CPP_OPTION (pfile, pedantic_errors) = 1;
1266 CPP_OPTION (pfile, pedantic) = 1;
1269 CPP_OPTION (pfile, trigraphs) = 1;
1272 CPP_OPTION (pfile, cplusplus) = 1;
1273 CPP_OPTION (pfile, cplusplus_comments) = 1;
1276 CPP_OPTION (pfile, remap) = 1;
1279 CPP_OPTION (pfile, include_prefix) = arg;
1280 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1283 CPP_OPTION (pfile, cplusplus) = 0;
1284 CPP_OPTION (pfile, cplusplus_comments) = 1;
1285 CPP_OPTION (pfile, c89) = 0;
1286 CPP_OPTION (pfile, c99) = 1;
1287 CPP_OPTION (pfile, digraphs) = 1;
1288 CPP_OPTION (pfile, objc) = 0;
1290 case OPT_lang_cplusplus:
1291 CPP_OPTION (pfile, cplusplus) = 1;
1292 CPP_OPTION (pfile, cplusplus_comments) = 1;
1293 CPP_OPTION (pfile, c89) = 0;
1294 CPP_OPTION (pfile, c99) = 0;
1295 CPP_OPTION (pfile, objc) = 0;
1296 CPP_OPTION (pfile, digraphs) = 1;
1297 new_pending_directive (pend, "__cplusplus", cpp_define);
1299 case OPT_lang_objcplusplus:
1300 CPP_OPTION (pfile, cplusplus) = 1;
1301 new_pending_directive (pend, "__cplusplus", cpp_define);
1304 CPP_OPTION (pfile, cplusplus_comments) = 1;
1305 CPP_OPTION (pfile, c89) = 0;
1306 CPP_OPTION (pfile, c99) = 0;
1307 CPP_OPTION (pfile, objc) = 1;
1308 new_pending_directive (pend, "__OBJC__", cpp_define);
1311 CPP_OPTION (pfile, lang_asm) = 1;
1312 CPP_OPTION (pfile, dollars_in_ident) = 0;
1313 new_pending_directive (pend, "__ASSEMBLER__", cpp_define);
1316 /* -nostdinc causes no default include directories.
1317 You must specify all include-file directories with -I. */
1318 CPP_OPTION (pfile, no_standard_includes) = 1;
1320 case OPT_nostdincplusplus:
1321 /* -nostdinc++ causes no default C++-specific include directories. */
1322 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1325 CPP_OPTION (pfile, cplusplus) = 0;
1326 CPP_OPTION (pfile, cplusplus_comments) = 1;
1327 CPP_OPTION (pfile, c89) = 1;
1328 CPP_OPTION (pfile, c99) = 0;
1329 CPP_OPTION (pfile, objc) = 0;
1330 CPP_OPTION (pfile, digraphs) = 1;
1334 CPP_OPTION (pfile, cplusplus) = 0;
1335 CPP_OPTION (pfile, cplusplus_comments) = 1;
1336 CPP_OPTION (pfile, c89) = 0;
1337 CPP_OPTION (pfile, c99) = 1;
1338 CPP_OPTION (pfile, digraphs) = 1;
1339 CPP_OPTION (pfile, objc) = 0;
1340 new_pending_directive (CPP_OPTION (pfile, pending),
1341 "__STDC_VERSION__=199901L", cpp_define);
1343 case OPT_std_iso9899_199409:
1344 new_pending_directive (CPP_OPTION (pfile, pending),
1345 "__STDC_VERSION__=199409L", cpp_define);
1347 case OPT_std_iso9899_1990:
1350 CPP_OPTION (pfile, cplusplus) = 0;
1351 CPP_OPTION (pfile, cplusplus_comments) = 0;
1352 CPP_OPTION (pfile, c89) = 1;
1353 CPP_OPTION (pfile, c99) = 0;
1354 CPP_OPTION (pfile, objc) = 0;
1355 CPP_OPTION (pfile, digraphs) = opt_code == OPT_std_iso9899_199409;
1356 CPP_OPTION (pfile, trigraphs) = 1;
1357 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
1359 case OPT_std_iso9899_199x:
1360 case OPT_std_iso9899_1999:
1363 CPP_OPTION (pfile, cplusplus) = 0;
1364 CPP_OPTION (pfile, cplusplus_comments) = 1;
1365 CPP_OPTION (pfile, c89) = 0;
1366 CPP_OPTION (pfile, c99) = 1;
1367 CPP_OPTION (pfile, objc) = 0;
1368 CPP_OPTION (pfile, digraphs) = 1;
1369 CPP_OPTION (pfile, trigraphs) = 1;
1370 new_pending_directive (CPP_OPTION (pfile, pending),
1371 "__STRICT_ANSI__", cpp_define);
1372 new_pending_directive (CPP_OPTION (pfile, pending),
1373 "__STDC_VERSION__=199901L", cpp_define);
1376 if (CPP_OPTION (pfile, out_fname) != NULL)
1378 cpp_fatal (pfile, "Output filename specified twice");
1381 CPP_OPTION (pfile, out_fname) = arg;
1382 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1383 CPP_OPTION (pfile, out_fname) = "";
1386 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1387 #ifdef TARGET_VERSION
1390 fputc ('\n', stderr);
1391 CPP_OPTION (pfile, verbose) = 1;
1393 case OPT_stdin_stdout:
1394 /* JF handle '-' as file name meaning stdin or stdout */
1395 if (CPP_OPTION (pfile, in_fname) == NULL)
1396 CPP_OPTION (pfile, in_fname) = "";
1397 else if (CPP_OPTION (pfile, out_fname) == NULL)
1398 CPP_OPTION (pfile, out_fname) = "";
1401 /* Args to -d specify what parts of macros to dump.
1402 Silently ignore unrecognised options; they may
1403 be aimed at the compiler proper. */
1407 while ((c = *arg++) != '\0')
1411 CPP_OPTION (pfile, dump_macros) = dump_only;
1412 CPP_OPTION (pfile, no_output) = 1;
1415 CPP_OPTION (pfile, dump_macros) = dump_names;
1418 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1421 CPP_OPTION (pfile, dump_includes) = 1;
1426 /* The style of the choices here is a bit mixed.
1427 The chosen scheme is a hybrid of keeping all options in one string
1428 and specifying each option in a separate argument:
1429 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1430 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1431 -M[M][G][D file]. This is awkward to handle in specs, and is not
1433 /* ??? -MG must be specified in addition to one of -M or -MM.
1434 This can be relaxed in the future without breaking anything.
1435 The converse isn't true. */
1437 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1439 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1445 if (opt_code == OPT_M || opt_code == OPT_MD)
1446 CPP_OPTION (pfile, print_deps) = 2;
1448 CPP_OPTION (pfile, print_deps) = 1;
1450 /* For -MD and -MMD options, write deps on file named by next arg */
1451 /* For -M and -MM, write deps on standard output
1452 and suppress the usual output. */
1453 if (opt_code == OPT_MD || opt_code == OPT_MMD)
1454 CPP_OPTION (pfile, deps_file) = arg;
1456 CPP_OPTION (pfile, no_output) = 1;
1461 /* -A with an argument beginning with '-' acts as
1462 #unassert on whatever immediately follows the '-'.
1463 If "-" is the whole argument, we eliminate all
1464 predefined macros and assertions, including those
1465 that were specified earlier on the command line.
1466 That way we can get rid of any that were passed
1467 automatically in from GCC. */
1471 struct pending_option *o1, *o2;
1473 o1 = CPP_OPTION (pfile, pending)->directive_head;
1480 CPP_OPTION (pfile, pending)->directive_head = NULL;
1481 CPP_OPTION (pfile, pending)->directive_tail = NULL;
1484 new_pending_directive (CPP_OPTION (pfile, pending),
1485 arg + 1, cpp_unassert);
1488 new_pending_directive (CPP_OPTION (pfile, pending),
1492 new_pending_directive (CPP_OPTION (pfile, pending), arg, cpp_undef);
1494 case OPT_I: /* Add directory to path for includes. */
1495 if (!strcmp (arg, "-"))
1498 Use the preceding -I directories for #include "..."
1499 but not #include <...>.
1500 Don't search the directory of the present file
1501 for #include "...". (Note that -I. -I- is not the same as
1502 the default setup; -I. uses the compiler's working dir.) */
1503 if (! CPP_OPTION (pfile, ignore_srcdir))
1505 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1506 pend->quote_head = pend->brack_head;
1507 pend->quote_tail = pend->brack_tail;
1508 pend->brack_head = 0;
1509 pend->brack_tail = 0;
1510 CPP_OPTION (pfile, ignore_srcdir) = 1;
1514 cpp_fatal (pfile, "-I- specified twice");
1519 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1520 xstrdup (arg), BRACKET, 0);
1523 /* Add directory to beginning of system include path, as a system
1524 include directory. */
1525 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1526 xstrdup (arg), SYSTEM, 0);
1530 struct pending_option *o = (struct pending_option *)
1531 xmalloc (sizeof (struct pending_option));
1534 /* This list has to be built in reverse order so that
1535 when cpp_start_read pushes all the -include files onto
1536 the buffer stack, they will be scanned in forward order. */
1537 o->next = CPP_OPTION (pfile, pending)->include_head;
1538 CPP_OPTION (pfile, pending)->include_head = o;
1543 struct pending_option *o = (struct pending_option *)
1544 xmalloc (sizeof (struct pending_option));
1548 APPEND (CPP_OPTION (pfile, pending), imacros, o);
1551 case OPT_iwithprefix:
1552 /* Add directory to end of path for includes,
1553 with the default prefix at the front of its name. */
1555 case OPT_iwithprefixbefore:
1556 /* Add directory to main path for includes,
1557 with the default prefix at the front of its name. */
1564 if (CPP_OPTION (pfile, include_prefix) != 0)
1566 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1567 fname = xmalloc (ipl + len + 1);
1568 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1569 memcpy (fname + ipl, arg, len + 1);
1571 else if (cpp_GCC_INCLUDE_DIR_len)
1573 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1574 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1575 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1578 fname = xstrdup (arg);
1580 append_include_chain (pfile, CPP_OPTION (pfile, pending), fname,
1581 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1585 /* Add directory to end of path for includes. */
1586 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1587 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], "-Wpaste"))
1609 CPP_OPTION (pfile, warn_paste) = 1;
1610 else if (!strcmp (argv[i], "-Werror"))
1611 CPP_OPTION (pfile, warnings_are_errors) = 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-paste"))
1625 CPP_OPTION (pfile, warn_paste) = 0;
1626 else if (!strcmp (argv[i], "-Wno-error"))
1627 CPP_OPTION (pfile, warnings_are_errors) = 0;
1636 opt_comp (const void *p1, const void *p2)
1638 return strcmp (((struct cl_option *)p1)->opt_text,
1639 ((struct cl_option *)p2)->opt_text);
1643 /* Handle command-line options in (argc, argv).
1644 Can be called multiple times, to handle multiple sets of options.
1645 Returns if an unrecognized option is seen.
1646 Returns number of strings consumed. */
1648 cpp_handle_options (pfile, argc, argv)
1654 int strings_processed;
1656 for (i = 0; i < argc; i += strings_processed)
1658 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1659 if (strings_processed == 0)
1668 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1669 /* To keep the lines from getting too long for some compilers, limit
1670 to about 500 characters (6 lines) per chunk. */
1673 -include <file> Include the contents of <file> before other files\n\
1674 -imacros <file> Accept definition of macros in <file>\n\
1675 -iprefix <path> Specify <path> as a prefix for next two options\n\
1676 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1677 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1678 -isystem <dir> Add <dir> to the start of the system include path\n\
1681 -idirafter <dir> Add <dir> to the end of the system include path\n\
1682 -I <dir> Add <dir> to the end of the main include path\n\
1683 -I- Fine-grained include path control; see info docs\n\
1684 -nostdinc Do not search system include directories\n\
1685 (dirs specified with -isystem will still be used)\n\
1686 -nostdinc++ Do not search system include directories for C++\n\
1687 -o <file> Put output into <file>\n\
1690 -pedantic Issue all warnings demanded by strict ISO C\n\
1691 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1692 -trigraphs Support ISO C trigraphs\n\
1693 -lang-c Assume that the input sources are in C\n\
1694 -lang-c89 Assume that the input sources are in C89\n\
1697 -lang-c++ Assume that the input sources are in C++\n\
1698 -lang-objc Assume that the input sources are in ObjectiveC\n\
1699 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1700 -lang-asm Assume that the input sources are in assembler\n\
1703 -std=<std name> Specify the conformance standard; one of:\n\
1704 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1705 iso9899:199409, iso9899:1999\n\
1706 -+ Allow parsing of C++ style features\n\
1707 -w Inhibit warning messages\n\
1708 -Wtrigraphs Warn if trigraphs are encountered\n\
1709 -Wno-trigraphs Do not warn about trigraphs\n\
1710 -Wcomment{s} Warn if one comment starts inside another\n\
1713 -Wno-comment{s} Do not warn about comments\n\
1714 -Wtraditional Warn about features not present in traditional C\n\
1715 -Wno-traditional Do not warn about traditional C\n\
1716 -Wundef Warn if an undefined macro is used by #if\n\
1717 -Wno-undef Do not warn about testing undefined macros\n\
1718 -Wimport Warn about the use of the #import directive\n\
1721 -Wno-import Do not warn about the use of #import\n\
1722 -Werror Treat all warnings as errors\n\
1723 -Wno-error Do not treat warnings as errors\n\
1724 -Wall Enable all preprocessor warnings\n\
1725 -M Generate make dependencies\n\
1726 -MM As -M, but ignore system header files\n\
1729 -MD As -M, but put output in a .d file\n\
1730 -MMD As -MD, but ignore system header files\n\
1731 -MG Treat missing header file as generated files\n\
1732 -g3 Include #define and #undef directives in the output\n\
1733 -D<macro> Define a <macro> with string '1' as its value\n\
1734 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1737 -A<question> (<answer>) Assert the <answer> to <question>\n\
1738 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1739 -U<macro> Undefine <macro> \n\
1740 -v Display the version number\n\
1741 -H Print the name of header files as they are used\n\
1742 -C Do not discard comments\n\
1745 -dM Display a list of macro definitions active at end\n\
1746 -dD Preserve macro definitions in output\n\
1747 -dN As -dD except that only the names are preserved\n\
1748 -dI Include #include directives in the output\n\
1749 -ftabstop=<number> Distance between tab stops for column reporting\n\
1750 -P Do not generate #line directives\n\
1751 -$ Do not allow '$' in identifiers\n\
1754 -remap Remap file names when including files.\n\
1755 --version Display version information\n\
1756 -h or --help Display this information\n\