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 *));
114 static void sort_options PARAMS ((void));
116 static int parse_option PARAMS ((const char *));
118 /* Fourth argument to append_include_chain: chain to use */
119 enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };
121 /* If we have designated initializers (GCC >2.7) this table can be
122 initialized, constant data. Otherwise, it has to be filled in at
125 #if (GCC_VERSION >= 2007)
126 #define init_IStable() /* nothing */
127 #define ISTABLE __extension__ const unsigned char _cpp_IStable[256] = {
129 #define s(p, v) [p] = v,
131 #define ISTABLE unsigned char _cpp_IStable[256] = { 0 }; \
132 static void init_IStable PARAMS ((void)) { \
133 unsigned char *x = _cpp_IStable;
135 #define s(p, v) x[p] = v;
138 #define A(x) s(x, ISidnum|ISidstart)
139 #define N(x) s(x, ISidnum|ISnumstart)
140 #define H(x) s(x, IShspace|ISspace)
141 #define V(x) s(x, ISvspace|ISspace)
142 #define S(x) s(x, ISspace)
147 A('a') A('b') A('c') A('d') A('e') A('f') A('g') A('h') A('i')
148 A('j') A('k') A('l') A('m') A('n') A('o') A('p') A('q') A('r')
149 A('s') A('t') A('u') A('v') A('w') A('x') A('y') A('z')
151 A('A') A('B') A('C') A('D') A('E') A('F') A('G') A('H') A('I')
152 A('J') A('K') A('L') A('M') A('N') A('O') A('P') A('Q') A('R')
153 A('S') A('T') A('U') A('V') A('W') A('X') A('Y') A('Z')
155 N('1') N('2') N('3') N('4') N('5') N('6') N('7') N('8') N('9') N('0')
161 S('\0') S('\v') S('\f')
173 /* Given a colon-separated list of file names PATH,
174 add all the names to the search path for include files. */
177 path_include (pfile, pend, list, path)
179 struct cpp_pending *pend;
189 /* Find the end of this name. */
191 while (*q != 0 && *q != PATH_SEPARATOR) q++;
194 /* An empty name in the path stands for the current directory. */
195 name = (char *) xmalloc (2);
201 /* Otherwise use the directory that is named. */
202 name = (char *) xmalloc (q - p + 1);
203 memcpy (name, p, q - p);
207 append_include_chain (pfile, pend, name, path, 0);
209 /* Advance past this name. */
217 /* Append DIR to include path PATH. DIR must be permanently allocated
220 append_include_chain (pfile, pend, dir, path, cxx_aware)
222 struct cpp_pending *pend;
227 struct file_name_list *new;
231 _cpp_simplify_pathname (dir);
234 /* Dirs that don't exist are silently ignored. */
236 cpp_notice_from_errno (pfile, dir);
237 else if (CPP_OPTION (pfile, verbose))
238 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
242 if (!S_ISDIR (st.st_mode))
244 cpp_notice (pfile, "%s: Not a directory", dir);
249 if (len > pfile->max_include_len)
250 pfile->max_include_len = len;
252 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
255 new->ino = st.st_ino;
256 new->dev = st.st_dev;
258 new->sysp = cxx_aware ? 1 : 2;
261 new->name_map = NULL;
267 case QUOTE: APPEND (pend, quote, new); break;
268 case BRACKET: APPEND (pend, brack, new); break;
269 case SYSTEM: APPEND (pend, systm, new); break;
270 case AFTER: APPEND (pend, after, new); break;
274 /* Merge the four include chains together in the order quote, bracket,
275 system, after. Remove duplicate dirs (as determined by
276 INO_T_EQ()). The system_include and after_include chains are never
277 referred to again after this function; all access is through the
278 bracket_include path.
280 For the future: Check if the directory is empty (but
281 how?) and possibly preload the include hash. */
284 merge_include_chains (pfile)
287 struct file_name_list *prev, *cur, *other;
288 struct file_name_list *quote, *brack, *systm, *after;
289 struct file_name_list *qtail, *btail, *stail, *atail;
291 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
293 qtail = pend->quote_tail;
294 btail = pend->brack_tail;
295 stail = pend->systm_tail;
296 atail = pend->after_tail;
298 quote = pend->quote_head;
299 brack = pend->brack_head;
300 systm = pend->systm_head;
301 after = pend->after_head;
303 /* Paste together bracket, system, and after include chains. */
313 /* This is a bit tricky.
314 First we drop dupes from the quote-include list.
315 Then we drop dupes from the bracket-include list.
316 Finally, if qtail and brack are the same directory,
319 We can't just merge the lists and then uniquify them because
320 then we may lose directories from the <> search path that should
321 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
322 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
323 -Ibar -I- -Ifoo -Iquux.
325 Note that this algorithm is quadratic in the number of -I switches,
326 which is acceptable since there aren't usually that many of them. */
328 for (cur = quote, prev = NULL; cur; cur = cur->next)
330 for (other = quote; other != cur; other = other->next)
331 if (INO_T_EQ (cur->ino, other->ino)
332 && cur->dev == other->dev)
334 if (CPP_OPTION (pfile, verbose))
335 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"),
338 prev->next = cur->next;
348 for (cur = brack; cur; cur = cur->next)
350 for (other = brack; other != cur; other = other->next)
351 if (INO_T_EQ (cur->ino, other->ino)
352 && cur->dev == other->dev)
354 if (CPP_OPTION (pfile, verbose))
355 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"),
358 prev->next = cur->next;
369 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
373 if (CPP_OPTION (pfile, verbose))
374 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"),
384 while (cur->next != qtail)
387 if (CPP_OPTION (pfile, verbose))
388 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"),
401 CPP_OPTION (pfile, quote_include) = quote;
402 CPP_OPTION (pfile, bracket_include) = brack;
406 /* Initialize a cpp_reader structure. */
408 cpp_reader_init (pfile)
415 memset ((char *) pfile, 0, sizeof (cpp_reader));
417 CPP_OPTION (pfile, dollars_in_ident) = 1;
418 CPP_OPTION (pfile, cplusplus_comments) = 1;
419 CPP_OPTION (pfile, warn_import) = 1;
420 CPP_OPTION (pfile, warn_paste) = 1;
421 CPP_OPTION (pfile, digraphs) = 1;
422 CPP_OPTION (pfile, discard_comments) = 1;
423 CPP_OPTION (pfile, show_column) = 1;
424 CPP_OPTION (pfile, tabstop) = 8;
426 CPP_OPTION (pfile, pending) =
427 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
429 _cpp_init_macros (pfile);
430 _cpp_init_stacks (pfile);
431 _cpp_init_includes (pfile);
432 _cpp_init_internal_pragmas (pfile);
435 /* Initialize a cpp_printer structure. As a side effect, open the
438 cpp_printer_init (pfile, print)
442 memset (print, '\0', sizeof (cpp_printer));
443 if (CPP_OPTION (pfile, out_fname) == NULL)
444 CPP_OPTION (pfile, out_fname) = "";
446 if (CPP_OPTION (pfile, out_fname)[0] == '\0')
447 print->outf = stdout;
450 print->outf = fopen (CPP_OPTION (pfile, out_fname), "w");
453 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
460 /* Free resources used by PFILE.
461 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
466 while (CPP_BUFFER (pfile) != NULL)
467 cpp_pop_buffer (pfile);
470 deps_free (pfile->deps);
472 if (pfile->spec_nodes)
473 free (pfile->spec_nodes);
475 _cpp_free_temp_tokens (pfile);
476 _cpp_cleanup_includes (pfile);
477 _cpp_cleanup_stacks (pfile);
478 _cpp_cleanup_macros (pfile);
482 /* This structure defines one built-in macro. A node of type TYPE will
483 be entered in the macro hash table under the name NAME, with value
484 VALUE (if any). If TYPE is T_OPERATOR, the CODE field is used instead.
486 Two values are not compile time constants, so we tag
487 them in the FLAGS field instead:
488 VERS value is the global version_string, quoted
489 ULP value is the global user_label_prefix
491 Also, macros with CPLUS set in the flags field are entered only for C++.
500 unsigned short flags;
507 #define B(n, t) { U n, 0, 0, t, 0, sizeof n - 1 }
508 #define C(n, v) { U n, v, 0, T_MACRO, 0, sizeof n - 1 }
509 #define X(n, f) { U n, 0, 0, T_MACRO, f, sizeof n - 1 }
510 #define O(n, c, f) { U n, 0, c, T_OPERATOR, f, sizeof n - 1 }
511 static const struct builtin builtin_array[] =
513 B("__TIME__", T_TIME),
514 B("__DATE__", T_DATE),
515 B("__FILE__", T_FILE),
516 B("__BASE_FILE__", T_BASE_FILE),
517 B("__LINE__", T_SPECLINE),
518 B("__INCLUDE_LEVEL__", T_INCLUDE_LEVEL),
519 B("__STDC__", T_STDC),
521 X("__VERSION__", VERS),
522 X("__USER_LABEL_PREFIX__", ULP),
523 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
524 C("__HAVE_BUILTIN_SETJMP__", "1"),
525 #ifndef NO_BUILTIN_SIZE_TYPE
526 C("__SIZE_TYPE__", SIZE_TYPE),
528 #ifndef NO_BUILTIN_PTRDIFF_TYPE
529 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
531 #ifndef NO_BUILTIN_WCHAR_TYPE
532 C("__WCHAR_TYPE__", WCHAR_TYPE),
535 /* Named operators known to the preprocessor. These cannot be #defined
536 and always have their stated meaning. They are treated like normal
537 string tokens except for the type code and the meaning. Most of them
538 are only for C++ (but see iso646.h). */
539 O("defined", CPP_DEFINED, 0),
540 O("and", CPP_AND_AND, CPLUS),
541 O("and_eq", CPP_AND_EQ, CPLUS),
542 O("bitand", CPP_AND, CPLUS),
543 O("bitor", CPP_OR, CPLUS),
544 O("compl", CPP_COMPL, CPLUS),
545 O("not", CPP_NOT, CPLUS),
546 O("not_eq", CPP_NOT_EQ, CPLUS),
547 O("or", CPP_OR_OR, CPLUS),
548 O("or_eq", CPP_OR_EQ, CPLUS),
549 O("xor", CPP_XOR, CPLUS),
550 O("xor_eq", CPP_XOR_EQ, CPLUS),
555 #define builtin_array_end \
556 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
558 /* Subroutine of cpp_start_read; reads the builtins table above and
559 enters the macros into the hash table. */
561 initialize_builtins (pfile)
564 const struct builtin *b;
565 for(b = builtin_array; b < builtin_array_end; b++)
567 if (b->flags & CPLUS && ! CPP_OPTION (pfile, cplusplus))
570 if (b->type == T_MACRO)
577 /* Allocate enough space for 'name="value"\0'. */
578 str = xmalloc (b->len + strlen (version_string) + 4);
579 sprintf (str, "%s=\"%s\"", b->name, version_string);
584 val = user_label_prefix;
588 /* Allocate enough space for "name=value\0". */
589 str = xmalloc (b->len + strlen (val) + 2);
590 sprintf(str, "%s=%s", b->name, val);
592 cpp_define (pfile, str);
596 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
598 if (b->type == T_OPERATOR)
599 hp->value.code = b->code;
605 #undef builtin_array_end
607 /* Another subroutine of cpp_start_read. This one sets up to do
608 dependency-file output. */
610 initialize_dependency_output (pfile)
613 char *spec, *s, *output_file;
615 /* Either of two environment variables can specify output of deps.
616 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
617 where OUTPUT_FILE is the file to write deps info to
618 and DEPS_TARGET is the target to mention in the deps. */
620 if (CPP_OPTION (pfile, print_deps) == 0)
622 spec = getenv ("DEPENDENCIES_OUTPUT");
624 CPP_OPTION (pfile, print_deps) = 1;
627 spec = getenv ("SUNPRO_DEPENDENCIES");
629 CPP_OPTION (pfile, print_deps) = 2;
634 /* Find the space before the DEPS_TARGET, if there is one. */
635 s = strchr (spec, ' ');
638 CPP_OPTION (pfile, deps_target) = s + 1;
639 output_file = (char *) xmalloc (s - spec + 1);
640 memcpy (output_file, spec, s - spec);
641 output_file[s - spec] = 0;
645 CPP_OPTION (pfile, deps_target) = 0;
649 CPP_OPTION (pfile, deps_file) = output_file;
650 CPP_OPTION (pfile, print_deps_append) = 1;
653 pfile->deps = deps_init ();
655 /* Print the expected object file name as the target of this Make-rule. */
656 if (CPP_OPTION (pfile, deps_target))
657 deps_add_target (pfile->deps, CPP_OPTION (pfile, deps_target));
658 else if (*CPP_OPTION (pfile, in_fname) == 0)
659 deps_add_target (pfile->deps, "-");
661 deps_calc_target (pfile->deps, CPP_OPTION (pfile, in_fname));
663 if (CPP_OPTION (pfile, in_fname))
664 deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
667 /* And another subroutine. This one sets up the standard include path. */
669 initialize_standard_includes (pfile)
673 const struct default_include *p;
674 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
676 /* Several environment variables may add to the include search path.
677 CPATH specifies an additional list of directories to be searched
678 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
679 etc. specify an additional list of directories to be searched as
680 if specified with -isystem, for the language indicated. */
682 GET_ENV_PATH_LIST (path, "CPATH");
683 if (path != 0 && *path != 0)
684 path_include (pfile, CPP_OPTION (pfile, pending), path, BRACKET);
686 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
689 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
692 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
695 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
698 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
701 if (path != 0 && *path != 0)
702 path_include (pfile, CPP_OPTION (pfile, pending), path, SYSTEM);
704 /* Search "translated" versions of GNU directories.
705 These have /usr/local/lib/gcc... replaced by specd_prefix. */
706 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
708 /* Remove the `include' from /usr/local/lib/gcc.../include.
709 GCC_INCLUDE_DIR will always end in /include. */
710 int default_len = cpp_GCC_INCLUDE_DIR_len;
711 char *default_prefix = (char *) alloca (default_len + 1);
712 int specd_len = strlen (specd_prefix);
714 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
715 default_prefix[default_len] = '\0';
717 for (p = cpp_include_defaults; p->fname; p++)
719 /* Some standard dirs are only for C++. */
721 || (CPP_OPTION (pfile, cplusplus)
722 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
724 /* Does this dir start with the prefix? */
725 if (!strncmp (p->fname, default_prefix, default_len))
727 /* Yes; change prefix and add to search list. */
728 int flen = strlen (p->fname);
729 int this_len = specd_len + flen - default_len;
730 char *str = (char *) xmalloc (this_len + 1);
731 memcpy (str, specd_prefix, specd_len);
732 memcpy (str + specd_len,
733 p->fname + default_len,
734 flen - default_len + 1);
736 append_include_chain (pfile, CPP_OPTION (pfile, pending),
737 str, SYSTEM, p->cxx_aware);
743 /* Search ordinary names for GNU include directories. */
744 for (p = cpp_include_defaults; p->fname; p++)
746 /* Some standard dirs are only for C++. */
748 || (CPP_OPTION (pfile, cplusplus)
749 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
751 /* XXX Potential memory leak! */
752 char *str = xstrdup (update_path (p->fname, p->component));
753 append_include_chain (pfile, CPP_OPTION (pfile, pending),
754 str, SYSTEM, p->cxx_aware);
759 /* This is called after options have been processed.
760 * Check options for consistency, and setup for processing input
761 * from the file named FNAME. (Use standard input if FNAME==NULL.)
762 * Return 1 on success, 0 on failure.
766 cpp_start_read (pfile, print, fname)
771 struct pending_option *p, *q;
773 /* -MG doesn't select the form of output and must be specified with one of
774 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
775 inhibit compilation. */
776 if (CPP_OPTION (pfile, print_deps_missing_files)
777 && (CPP_OPTION (pfile, print_deps) == 0
778 || !CPP_OPTION (pfile, no_output)))
780 cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
784 /* -Wtraditional is not useful in C++ mode. */
785 if (CPP_OPTION (pfile, cplusplus))
786 CPP_OPTION (pfile, warn_traditional) = 0;
788 /* Do not warn about invalid token pasting if -lang-asm. */
789 if (CPP_OPTION (pfile, lang_asm))
790 CPP_OPTION (pfile, warn_paste) = 0;
792 /* Set this if it hasn't been set already. */
793 if (user_label_prefix == NULL)
794 user_label_prefix = USER_LABEL_PREFIX;
796 /* Figure out if we need to save function macro parameter spellings.
797 We don't use CPP_PEDANTIC() here because that depends on whether
798 or not the current file is a system header, and there is no
800 pfile->save_parameter_spellings =
801 CPP_OPTION (pfile, pedantic)
802 || CPP_OPTION (pfile, debug_output)
803 || CPP_OPTION (pfile, dump_macros) == dump_definitions
804 || CPP_OPTION (pfile, dump_macros) == dump_only;
806 /* Set up the IStable. This doesn't do anything if we were compiled
807 with a compiler that supports C99 designated initializers. */
810 /* Set up the tables used by read_and_prescan. */
811 _cpp_init_input_buffer (pfile);
813 /* Set up the include search path now. */
814 if (! CPP_OPTION (pfile, no_standard_includes))
815 initialize_standard_includes (pfile);
817 merge_include_chains (pfile);
819 /* With -v, print the list of dirs to search. */
820 if (CPP_OPTION (pfile, verbose))
822 struct file_name_list *l;
823 fprintf (stderr, _("#include \"...\" search starts here:\n"));
824 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
826 if (l == CPP_OPTION (pfile, bracket_include))
827 fprintf (stderr, _("#include <...> search starts here:\n"));
828 fprintf (stderr, " %s\n", l->name);
830 fprintf (stderr, _("End of search list.\n"));
833 /* Open the main input file. This must be done early, so we have a
834 buffer to stand on. */
835 if (CPP_OPTION (pfile, in_fname) == NULL
836 || *CPP_OPTION (pfile, in_fname) == 0)
838 CPP_OPTION (pfile, in_fname) = fname;
839 if (CPP_OPTION (pfile, in_fname) == NULL)
840 CPP_OPTION (pfile, in_fname) = "";
842 if (CPP_OPTION (pfile, out_fname) == NULL)
843 CPP_OPTION (pfile, out_fname) = "";
845 if (!cpp_read_file (pfile, fname))
848 initialize_dependency_output (pfile);
850 /* Install __LINE__, etc. */
851 initialize_builtins (pfile);
853 /* Do -U's, -D's and -A's in the order they were seen. */
854 p = CPP_OPTION (pfile, pending)->directive_head;
857 (*p->handler) (pfile, p->arg);
862 pfile->done_initializing = 1;
864 /* We start at line 1 of the main input file. */
867 print->last_fname = CPP_BUFFER (pfile)->nominal_fname;
871 /* The -imacros files can be scanned now, but the -include files
872 have to be pushed onto the include stack and processed later,
873 in the main loop calling cpp_get_token. */
875 p = CPP_OPTION (pfile, pending)->imacros_head;
878 if (cpp_read_file (pfile, p->arg))
879 cpp_scan_buffer_nooutput (pfile);
885 p = CPP_OPTION (pfile, pending)->include_head;
888 cpp_read_file (pfile, p->arg);
894 free (CPP_OPTION (pfile, pending));
895 CPP_OPTION (pfile, pending) = NULL;
900 /* This is called at the end of preprocessing. It pops the
901 last buffer and writes dependency output. It should also
902 clear macro definitions, such that you could call cpp_start_read
903 with a new filename to restart processing. */
905 cpp_finish (pfile, print)
909 if (CPP_BUFFER (pfile))
911 cpp_ice (pfile, "buffers still stacked in cpp_finish");
912 while (CPP_BUFFER (pfile))
913 cpp_pop_buffer (pfile);
916 /* Don't write the deps file if preprocessing has failed. */
917 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
919 /* Stream on which to print the dependency information. */
920 FILE *deps_stream = 0;
921 const char *deps_mode
922 = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
923 if (CPP_OPTION (pfile, deps_file) == 0)
924 deps_stream = stdout;
927 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
928 if (deps_stream == 0)
929 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
933 deps_write (pfile->deps, deps_stream, 72);
934 if (CPP_OPTION (pfile, deps_file))
936 if (ferror (deps_stream) || fclose (deps_stream) != 0)
937 cpp_fatal (pfile, "I/O error on output");
942 /* Flush any pending output. */
945 if (pfile->need_newline)
946 putc ('\n', print->outf);
947 if (ferror (print->outf) || fclose (print->outf))
948 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
951 /* Report on headers that could use multiple include guards. */
952 if (CPP_OPTION (pfile, print_include_names))
953 _cpp_report_missing_guards (pfile);
957 new_pending_directive (pend, text, handler)
958 struct cpp_pending *pend;
960 cl_directive_handler handler;
962 struct pending_option *o = (struct pending_option *)
963 xmalloc (sizeof (struct pending_option));
967 o->handler = handler;
968 APPEND (pend, directive, o);
971 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
972 I.e. a const string initializer with parens around it. That is
973 what N_("string") resolves to, so we make no_* be macros instead. */
974 #define no_arg N_("Argument missing after %s")
975 #define no_ass N_("Assertion missing after %s")
976 #define no_dir N_("Directory name missing after %s")
977 #define no_fil N_("File name missing after %s")
978 #define no_mac N_("Macro name missing after %s")
979 #define no_pth N_("Path name missing after %s")
980 #define no_num N_("Number missing after %s")
982 /* This is the list of all command line options, with the leading
983 "-" removed. It must be sorted in ASCII collating order. */
984 #define COMMAND_LINE_OPTIONS \
985 DEF_OPT("", 0, OPT_stdin_stdout) \
986 DEF_OPT("$", 0, OPT_dollar) \
987 DEF_OPT("+", 0, OPT_plus) \
988 DEF_OPT("-help", 0, OPT__help) \
989 DEF_OPT("-version", 0, OPT__version) \
990 DEF_OPT("A", no_ass, OPT_A) \
991 DEF_OPT("C", 0, OPT_C) \
992 DEF_OPT("D", no_mac, OPT_D) \
993 DEF_OPT("H", 0, OPT_H) \
994 DEF_OPT("I", no_dir, OPT_I) \
995 DEF_OPT("M", 0, OPT_M) \
996 DEF_OPT("MD", no_fil, OPT_MD) \
997 DEF_OPT("MG", 0, OPT_MG) \
998 DEF_OPT("MM", 0, OPT_MM) \
999 DEF_OPT("MMD", no_fil, OPT_MMD) \
1000 DEF_OPT("P", 0, OPT_P) \
1001 DEF_OPT("U", no_mac, OPT_U) \
1002 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1003 DEF_OPT("d", no_arg, OPT_d) \
1004 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1005 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1006 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1007 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1008 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1009 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1010 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1011 DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
1012 DEF_OPT("h", 0, OPT_h) \
1013 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1014 DEF_OPT("imacros", no_fil, OPT_imacros) \
1015 DEF_OPT("include", no_fil, OPT_include) \
1016 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1017 DEF_OPT("isystem", no_dir, OPT_isystem) \
1018 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1019 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1020 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1021 DEF_OPT("lang-c", 0, OPT_lang_c) \
1022 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1023 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1024 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1025 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1026 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1027 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1028 DEF_OPT("o", no_fil, OPT_o) \
1029 DEF_OPT("pedantic", 0, OPT_pedantic) \
1030 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1031 DEF_OPT("remap", 0, OPT_remap) \
1032 DEF_OPT("std=c89", 0, OPT_std_c89) \
1033 DEF_OPT("std=c99", 0, OPT_std_c99) \
1034 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1035 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1036 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1037 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1038 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1039 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1040 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1041 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1042 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1043 DEF_OPT("v", 0, OPT_v) \
1044 DEF_OPT("w", 0, OPT_w)
1046 #define DEF_OPT(text, msg, code) code,
1049 COMMAND_LINE_OPTIONS
1056 const char *opt_text;
1059 enum opt_code opt_code;
1062 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1064 static struct cl_option cl_options[] =
1066 static const struct cl_option cl_options[] =
1069 COMMAND_LINE_OPTIONS
1072 #undef COMMAND_LINE_OPTIONS
1078 static int opts_sorted = 0;
1083 /* For non-ASCII hosts, the array needs to be sorted at runtime */
1084 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
1090 /* Perform a binary search to find which, if any, option the given
1091 command-line matches. Returns its index in the option array,
1092 negative on failure. Complications arise since some options can be
1093 suffixed with an argument, and multiple complete matches can occur,
1094 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1095 accept options beginning with -g and -W that we do not recognise,
1096 but not to swallow any subsequent command line argument; these are
1097 handled as special cases in cpp_handle_option */
1099 parse_option (input)
1102 unsigned int md, mn, mx;
1113 opt_len = cl_options[md].opt_len;
1114 comp = strncmp (input, cl_options[md].opt_text, opt_len);
1122 if (input[opt_len] == '\0')
1124 /* We were passed more text. If the option takes an argument,
1125 we may match a later option or we may have been passed the
1126 argument. The longest possible option match succeeds.
1127 If the option takes no arguments we have not matched and
1128 continue the search (e.g. input="stdc++" match was "stdc") */
1130 if (cl_options[md].msg)
1132 /* Scan forwards. If we get an exact match, return it.
1133 Otherwise, return the longest option-accepting match.
1134 This loops no more than twice with current options */
1136 for (; mn < N_OPTS; mn++)
1138 opt_len = cl_options[mn].opt_len;
1139 if (strncmp (input, cl_options[mn].opt_text, opt_len))
1141 if (input[opt_len] == '\0')
1143 if (cl_options[mn].msg)
1154 /* Handle one command-line option in (argc, argv).
1155 Can be called multiple times, to handle multiple sets of options.
1156 Returns number of strings consumed. */
1159 cpp_handle_option (pfile, argc, argv)
1165 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1167 if (argv[i][0] != '-')
1169 if (CPP_OPTION (pfile, out_fname) != NULL)
1170 cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
1172 else if (CPP_OPTION (pfile, in_fname) != NULL)
1173 CPP_OPTION (pfile, out_fname) = argv[i];
1175 CPP_OPTION (pfile, in_fname) = argv[i];
1179 enum opt_code opt_code;
1181 const char *arg = 0;
1184 opt_index = parse_option (&argv[i][1]);
1188 opt_code = cl_options[opt_index].opt_code;
1189 if (cl_options[opt_index].msg)
1191 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1193 /* Yuk. Special case for -g and -W as they must not swallow
1194 up any following argument. If this becomes common, add
1195 another field to the cl_options table */
1196 if (arg[0] == '\0' && !(opt_code == OPT_g || opt_code == OPT_W))
1201 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1209 case N_OPTS: /* shut GCC up */
1211 case OPT_fleading_underscore:
1212 user_label_prefix = "_";
1214 case OPT_fno_leading_underscore:
1215 user_label_prefix = "";
1217 case OPT_fpreprocessed:
1218 CPP_OPTION (pfile, preprocessed) = 1;
1220 case OPT_fno_preprocessed:
1221 CPP_OPTION (pfile, preprocessed) = 0;
1223 case OPT_fshow_column:
1224 CPP_OPTION (pfile, show_column) = 1;
1226 case OPT_fno_show_column:
1227 CPP_OPTION (pfile, show_column) = 0;
1230 /* Silently ignore empty string, non-longs and silly values. */
1234 long tabstop = strtol (arg, &endptr, 10);
1235 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1236 CPP_OPTION (pfile, tabstop) = tabstop;
1240 CPP_OPTION (pfile, inhibit_warnings) = 1;
1242 case OPT_g: /* Silently ignore anything but -g3 */
1243 if (!strcmp(&argv[i][2], "3"))
1244 CPP_OPTION (pfile, debug_output) = 1;
1252 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1256 CPP_OPTION (pfile, discard_comments) = 0;
1259 CPP_OPTION (pfile, no_line_commands) = 1;
1261 case OPT_dollar: /* Don't include $ in identifiers. */
1262 CPP_OPTION (pfile, dollars_in_ident) = 0;
1265 CPP_OPTION (pfile, print_include_names) = 1;
1268 new_pending_directive (pend, arg, cpp_define);
1270 case OPT_pedantic_errors:
1271 CPP_OPTION (pfile, pedantic_errors) = 1;
1274 CPP_OPTION (pfile, pedantic) = 1;
1277 CPP_OPTION (pfile, trigraphs) = 1;
1280 CPP_OPTION (pfile, cplusplus) = 1;
1281 CPP_OPTION (pfile, cplusplus_comments) = 1;
1284 CPP_OPTION (pfile, remap) = 1;
1287 CPP_OPTION (pfile, include_prefix) = arg;
1288 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1291 CPP_OPTION (pfile, cplusplus) = 0;
1292 CPP_OPTION (pfile, cplusplus_comments) = 1;
1293 CPP_OPTION (pfile, c89) = 0;
1294 CPP_OPTION (pfile, c99) = 1;
1295 CPP_OPTION (pfile, digraphs) = 1;
1296 CPP_OPTION (pfile, objc) = 0;
1298 case OPT_lang_cplusplus:
1299 CPP_OPTION (pfile, cplusplus) = 1;
1300 CPP_OPTION (pfile, cplusplus_comments) = 1;
1301 CPP_OPTION (pfile, c89) = 0;
1302 CPP_OPTION (pfile, c99) = 0;
1303 CPP_OPTION (pfile, objc) = 0;
1304 CPP_OPTION (pfile, digraphs) = 1;
1305 new_pending_directive (pend, "__cplusplus", cpp_define);
1307 case OPT_lang_objcplusplus:
1308 CPP_OPTION (pfile, cplusplus) = 1;
1309 new_pending_directive (pend, "__cplusplus", cpp_define);
1312 CPP_OPTION (pfile, cplusplus_comments) = 1;
1313 CPP_OPTION (pfile, c89) = 0;
1314 CPP_OPTION (pfile, c99) = 0;
1315 CPP_OPTION (pfile, objc) = 1;
1316 new_pending_directive (pend, "__OBJC__", cpp_define);
1319 CPP_OPTION (pfile, lang_asm) = 1;
1320 CPP_OPTION (pfile, dollars_in_ident) = 0;
1321 new_pending_directive (pend, "__ASSEMBLER__", cpp_define);
1324 /* -nostdinc causes no default include directories.
1325 You must specify all include-file directories with -I. */
1326 CPP_OPTION (pfile, no_standard_includes) = 1;
1328 case OPT_nostdincplusplus:
1329 /* -nostdinc++ causes no default C++-specific include directories. */
1330 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1333 CPP_OPTION (pfile, cplusplus) = 0;
1334 CPP_OPTION (pfile, cplusplus_comments) = 1;
1335 CPP_OPTION (pfile, c89) = 1;
1336 CPP_OPTION (pfile, c99) = 0;
1337 CPP_OPTION (pfile, objc) = 0;
1338 CPP_OPTION (pfile, digraphs) = 1;
1342 CPP_OPTION (pfile, cplusplus) = 0;
1343 CPP_OPTION (pfile, cplusplus_comments) = 1;
1344 CPP_OPTION (pfile, c89) = 0;
1345 CPP_OPTION (pfile, c99) = 1;
1346 CPP_OPTION (pfile, digraphs) = 1;
1347 CPP_OPTION (pfile, objc) = 0;
1348 new_pending_directive (CPP_OPTION (pfile, pending),
1349 "__STDC_VERSION__=199901L", cpp_define);
1351 case OPT_std_iso9899_199409:
1352 new_pending_directive (CPP_OPTION (pfile, pending),
1353 "__STDC_VERSION__=199409L", cpp_define);
1355 case OPT_std_iso9899_1990:
1358 CPP_OPTION (pfile, cplusplus) = 0;
1359 CPP_OPTION (pfile, cplusplus_comments) = 0;
1360 CPP_OPTION (pfile, c89) = 1;
1361 CPP_OPTION (pfile, c99) = 0;
1362 CPP_OPTION (pfile, objc) = 0;
1363 CPP_OPTION (pfile, digraphs) = opt_code == OPT_std_iso9899_199409;
1364 CPP_OPTION (pfile, trigraphs) = 1;
1365 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
1367 case OPT_std_iso9899_199x:
1368 case OPT_std_iso9899_1999:
1371 CPP_OPTION (pfile, cplusplus) = 0;
1372 CPP_OPTION (pfile, cplusplus_comments) = 1;
1373 CPP_OPTION (pfile, c89) = 0;
1374 CPP_OPTION (pfile, c99) = 1;
1375 CPP_OPTION (pfile, objc) = 0;
1376 CPP_OPTION (pfile, digraphs) = 1;
1377 CPP_OPTION (pfile, trigraphs) = 1;
1378 new_pending_directive (CPP_OPTION (pfile, pending),
1379 "__STRICT_ANSI__", cpp_define);
1380 new_pending_directive (CPP_OPTION (pfile, pending),
1381 "__STDC_VERSION__=199901L", cpp_define);
1384 if (CPP_OPTION (pfile, out_fname) != NULL)
1386 cpp_fatal (pfile, "Output filename specified twice");
1389 CPP_OPTION (pfile, out_fname) = arg;
1390 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1391 CPP_OPTION (pfile, out_fname) = "";
1394 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1395 #ifdef TARGET_VERSION
1398 fputc ('\n', stderr);
1399 CPP_OPTION (pfile, verbose) = 1;
1401 case OPT_stdin_stdout:
1402 /* JF handle '-' as file name meaning stdin or stdout */
1403 if (CPP_OPTION (pfile, in_fname) == NULL)
1404 CPP_OPTION (pfile, in_fname) = "";
1405 else if (CPP_OPTION (pfile, out_fname) == NULL)
1406 CPP_OPTION (pfile, out_fname) = "";
1409 /* Args to -d specify what parts of macros to dump.
1410 Silently ignore unrecognised options; they may
1411 be aimed at the compiler proper. */
1415 while ((c = *arg++) != '\0')
1419 CPP_OPTION (pfile, dump_macros) = dump_only;
1420 CPP_OPTION (pfile, no_output) = 1;
1423 CPP_OPTION (pfile, dump_macros) = dump_names;
1426 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1429 CPP_OPTION (pfile, dump_includes) = 1;
1434 /* The style of the choices here is a bit mixed.
1435 The chosen scheme is a hybrid of keeping all options in one string
1436 and specifying each option in a separate argument:
1437 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1438 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1439 -M[M][G][D file]. This is awkward to handle in specs, and is not
1441 /* ??? -MG must be specified in addition to one of -M or -MM.
1442 This can be relaxed in the future without breaking anything.
1443 The converse isn't true. */
1445 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1447 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1453 if (opt_code == OPT_M || opt_code == OPT_MD)
1454 CPP_OPTION (pfile, print_deps) = 2;
1456 CPP_OPTION (pfile, print_deps) = 1;
1458 /* For -MD and -MMD options, write deps on file named by next arg */
1459 /* For -M and -MM, write deps on standard output
1460 and suppress the usual output. */
1461 if (opt_code == OPT_MD || opt_code == OPT_MMD)
1462 CPP_OPTION (pfile, deps_file) = arg;
1464 CPP_OPTION (pfile, no_output) = 1;
1469 /* -A with an argument beginning with '-' acts as
1470 #unassert on whatever immediately follows the '-'.
1471 If "-" is the whole argument, we eliminate all
1472 predefined macros and assertions, including those
1473 that were specified earlier on the command line.
1474 That way we can get rid of any that were passed
1475 automatically in from GCC. */
1479 struct pending_option *o1, *o2;
1481 o1 = CPP_OPTION (pfile, pending)->directive_head;
1488 CPP_OPTION (pfile, pending)->directive_head = NULL;
1489 CPP_OPTION (pfile, pending)->directive_tail = NULL;
1492 new_pending_directive (CPP_OPTION (pfile, pending),
1493 arg + 1, cpp_unassert);
1496 new_pending_directive (CPP_OPTION (pfile, pending),
1500 new_pending_directive (CPP_OPTION (pfile, pending), arg, cpp_undef);
1502 case OPT_I: /* Add directory to path for includes. */
1503 if (!strcmp (arg, "-"))
1506 Use the preceding -I directories for #include "..."
1507 but not #include <...>.
1508 Don't search the directory of the present file
1509 for #include "...". (Note that -I. -I- is not the same as
1510 the default setup; -I. uses the compiler's working dir.) */
1511 if (! CPP_OPTION (pfile, ignore_srcdir))
1513 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1514 pend->quote_head = pend->brack_head;
1515 pend->quote_tail = pend->brack_tail;
1516 pend->brack_head = 0;
1517 pend->brack_tail = 0;
1518 CPP_OPTION (pfile, ignore_srcdir) = 1;
1522 cpp_fatal (pfile, "-I- specified twice");
1527 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1528 xstrdup (arg), BRACKET, 0);
1531 /* Add directory to beginning of system include path, as a system
1532 include directory. */
1533 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1534 xstrdup (arg), SYSTEM, 0);
1538 struct pending_option *o = (struct pending_option *)
1539 xmalloc (sizeof (struct pending_option));
1542 /* This list has to be built in reverse order so that
1543 when cpp_start_read pushes all the -include files onto
1544 the buffer stack, they will be scanned in forward order. */
1545 o->next = CPP_OPTION (pfile, pending)->include_head;
1546 CPP_OPTION (pfile, pending)->include_head = o;
1551 struct pending_option *o = (struct pending_option *)
1552 xmalloc (sizeof (struct pending_option));
1556 APPEND (CPP_OPTION (pfile, pending), imacros, o);
1559 case OPT_iwithprefix:
1560 /* Add directory to end of path for includes,
1561 with the default prefix at the front of its name. */
1563 case OPT_iwithprefixbefore:
1564 /* Add directory to main path for includes,
1565 with the default prefix at the front of its name. */
1572 if (CPP_OPTION (pfile, include_prefix) != 0)
1574 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1575 fname = xmalloc (ipl + len + 1);
1576 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1577 memcpy (fname + ipl, arg, len + 1);
1579 else if (cpp_GCC_INCLUDE_DIR_len)
1581 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1582 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1583 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1586 fname = xstrdup (arg);
1588 append_include_chain (pfile, CPP_OPTION (pfile, pending), fname,
1589 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1593 /* Add directory to end of path for includes. */
1594 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1595 xstrdup (arg), AFTER, 0);
1598 /* Silently ignore unrecognised options */
1599 if (!strcmp (argv[i], "-Wall"))
1601 CPP_OPTION (pfile, warn_trigraphs) = 1;
1602 CPP_OPTION (pfile, warn_comments) = 1;
1604 else if (!strcmp (argv[i], "-Wtraditional"))
1605 CPP_OPTION (pfile, warn_traditional) = 1;
1606 else if (!strcmp (argv[i], "-Wtrigraphs"))
1607 CPP_OPTION (pfile, warn_trigraphs) = 1;
1608 else if (!strcmp (argv[i], "-Wcomment"))
1609 CPP_OPTION (pfile, warn_comments) = 1;
1610 else if (!strcmp (argv[i], "-Wcomments"))
1611 CPP_OPTION (pfile, warn_comments) = 1;
1612 else if (!strcmp (argv[i], "-Wundef"))
1613 CPP_OPTION (pfile, warn_undef) = 1;
1614 else if (!strcmp (argv[i], "-Wimport"))
1615 CPP_OPTION (pfile, warn_import) = 1;
1616 else if (!strcmp (argv[i], "-Wpaste"))
1617 CPP_OPTION (pfile, warn_paste) = 1;
1618 else if (!strcmp (argv[i], "-Werror"))
1619 CPP_OPTION (pfile, warnings_are_errors) = 1;
1620 else if (!strcmp (argv[i], "-Wno-traditional"))
1621 CPP_OPTION (pfile, warn_traditional) = 0;
1622 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1623 CPP_OPTION (pfile, warn_trigraphs) = 0;
1624 else if (!strcmp (argv[i], "-Wno-comment"))
1625 CPP_OPTION (pfile, warn_comments) = 0;
1626 else if (!strcmp (argv[i], "-Wno-comments"))
1627 CPP_OPTION (pfile, warn_comments) = 0;
1628 else if (!strcmp (argv[i], "-Wno-undef"))
1629 CPP_OPTION (pfile, warn_undef) = 0;
1630 else if (!strcmp (argv[i], "-Wno-import"))
1631 CPP_OPTION (pfile, warn_import) = 0;
1632 else if (!strcmp (argv[i], "-Wno-paste"))
1633 CPP_OPTION (pfile, warn_paste) = 0;
1634 else if (!strcmp (argv[i], "-Wno-error"))
1635 CPP_OPTION (pfile, warnings_are_errors) = 0;
1644 opt_comp (const void *p1, const void *p2)
1646 return strcmp (((struct cl_option *)p1)->opt_text,
1647 ((struct cl_option *)p2)->opt_text);
1651 /* Handle command-line options in (argc, argv).
1652 Can be called multiple times, to handle multiple sets of options.
1653 Returns if an unrecognized option is seen.
1654 Returns number of strings consumed. */
1656 cpp_handle_options (pfile, argc, argv)
1662 int strings_processed;
1664 for (i = 0; i < argc; i += strings_processed)
1666 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1667 if (strings_processed == 0)
1676 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1677 /* To keep the lines from getting too long for some compilers, limit
1678 to about 500 characters (6 lines) per chunk. */
1681 -include <file> Include the contents of <file> before other files\n\
1682 -imacros <file> Accept definition of macros in <file>\n\
1683 -iprefix <path> Specify <path> as a prefix for next two options\n\
1684 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1685 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1686 -isystem <dir> Add <dir> to the start of the system include path\n\
1689 -idirafter <dir> Add <dir> to the end of the system include path\n\
1690 -I <dir> Add <dir> to the end of the main include path\n\
1691 -I- Fine-grained include path control; see info docs\n\
1692 -nostdinc Do not search system include directories\n\
1693 (dirs specified with -isystem will still be used)\n\
1694 -nostdinc++ Do not search system include directories for C++\n\
1695 -o <file> Put output into <file>\n\
1698 -pedantic Issue all warnings demanded by strict ISO C\n\
1699 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1700 -trigraphs Support ISO C trigraphs\n\
1701 -lang-c Assume that the input sources are in C\n\
1702 -lang-c89 Assume that the input sources are in C89\n\
1705 -lang-c++ Assume that the input sources are in C++\n\
1706 -lang-objc Assume that the input sources are in ObjectiveC\n\
1707 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1708 -lang-asm Assume that the input sources are in assembler\n\
1711 -std=<std name> Specify the conformance standard; one of:\n\
1712 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1713 iso9899:199409, iso9899:1999\n\
1714 -+ Allow parsing of C++ style features\n\
1715 -w Inhibit warning messages\n\
1716 -Wtrigraphs Warn if trigraphs are encountered\n\
1717 -Wno-trigraphs Do not warn about trigraphs\n\
1718 -Wcomment{s} Warn if one comment starts inside another\n\
1721 -Wno-comment{s} Do not warn about comments\n\
1722 -Wtraditional Warn about features not present in traditional C\n\
1723 -Wno-traditional Do not warn about traditional C\n\
1724 -Wundef Warn if an undefined macro is used by #if\n\
1725 -Wno-undef Do not warn about testing undefined macros\n\
1726 -Wimport Warn about the use of the #import directive\n\
1729 -Wno-import Do not warn about the use of #import\n\
1730 -Werror Treat all warnings as errors\n\
1731 -Wno-error Do not treat warnings as errors\n\
1732 -Wall Enable all preprocessor warnings\n\
1733 -M Generate make dependencies\n\
1734 -MM As -M, but ignore system header files\n\
1737 -MD As -M, but put output in a .d file\n\
1738 -MMD As -MD, but ignore system header files\n\
1739 -MG Treat missing header file as generated files\n\
1740 -g3 Include #define and #undef directives in the output\n\
1741 -D<macro> Define a <macro> with string '1' as its value\n\
1742 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1745 -A<question> (<answer>) Assert the <answer> to <question>\n\
1746 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1747 -U<macro> Undefine <macro> \n\
1748 -v Display the version number\n\
1749 -H Print the name of header files as they are used\n\
1750 -C Do not discard comments\n\
1753 -dM Display a list of macro definitions active at end\n\
1754 -dD Preserve macro definitions in output\n\
1755 -dN As -dD except that only the names are preserved\n\
1756 -dI Include #include directives in the output\n\
1757 -ftabstop=<number> Distance between tab stops for column reporting\n\
1758 -P Do not generate #line directives\n\
1759 -$ Do not allow '$' in identifiers\n\
1762 -remap Remap file names when including files.\n\
1763 --version Display version information\n\
1764 -h or --help Display this information\n\