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 *,
100 static void initialize_builtins PARAMS ((cpp_reader *));
101 static void append_include_chain PARAMS ((cpp_reader *,
103 struct file_name_list * remove_dup_dir PARAMS ((cpp_reader *,
104 struct file_name_list *));
105 struct file_name_list * remove_dup_dirs PARAMS ((cpp_reader *,
106 struct file_name_list *));
107 static void merge_include_chains PARAMS ((cpp_reader *));
109 static void initialize_dependency_output PARAMS ((cpp_reader *));
110 static void initialize_standard_includes PARAMS ((cpp_reader *));
111 static void new_pending_directive PARAMS ((struct cpp_pending *,
113 cl_directive_handler));
115 static int opt_comp PARAMS ((const void *, const void *));
117 static int parse_option PARAMS ((const char *));
119 /* Fourth argument to append_include_chain: chain to use */
120 enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };
122 /* If we have designated initializers (GCC >2.7) these tables can be
123 initialized, constant data. Otherwise, they have to be filled in at
125 #if HAVE_DESIGNATED_INITIALIZERS
127 #define init_IStable() /* nothing */
128 #define ISTABLE __extension__ const U_CHAR _cpp_IStable[UCHAR_MAX + 1] = {
130 #define init_trigraph_map() /* nothing */
131 #define TRIGRAPH_MAP \
132 __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = {
135 #define s(p, v) [p] = v,
139 #define ISTABLE unsigned char _cpp_IStable[UCHAR_MAX + 1] = { 0 }; \
140 static void init_IStable PARAMS ((void)) { \
141 unsigned char *x = _cpp_IStable;
143 #define TRIGRAPH_MAP U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
144 static void init_trigraph_map PARAMS ((void)) { \
145 unsigned char *x = _cpp_trigraph_map;
148 #define s(p, v) x[p] = v;
152 #define A(x) s(x, ISidnum|ISidstart)
153 #define N(x) s(x, ISidnum|ISnumstart)
154 #define H(x) s(x, IShspace|ISspace)
155 #define V(x) s(x, ISvspace|ISspace)
156 #define S(x) s(x, ISspace)
161 A('a') A('b') A('c') A('d') A('e') A('f') A('g') A('h') A('i')
162 A('j') A('k') A('l') A('m') A('n') A('o') A('p') A('q') A('r')
163 A('s') A('t') A('u') A('v') A('w') A('x') A('y') A('z')
165 A('A') A('B') A('C') A('D') A('E') A('F') A('G') A('H') A('I')
166 A('J') A('K') A('L') A('M') A('N') A('O') A('P') A('Q') A('R')
167 A('S') A('T') A('U') A('V') A('W') A('X') A('Y') A('Z')
169 N('1') N('2') N('3') N('4') N('5') N('6') N('7') N('8') N('9') N('0')
175 S('\0') S('\v') S('\f')
179 s('=', '#') s(')', ']') s('!', '|')
180 s('(', '[') s('\'', '^') s('>', '}')
181 s('/', '\\') s('<', '{') s('-', '~')
194 /* Given a colon-separated list of file names PATH,
195 add all the names to the search path for include files. */
198 path_include (pfile, list, path)
209 /* Find the end of this name. */
211 while (*q != 0 && *q != PATH_SEPARATOR) q++;
214 /* An empty name in the path stands for the current directory. */
215 name = (char *) xmalloc (2);
221 /* Otherwise use the directory that is named. */
222 name = (char *) xmalloc (q - p + 1);
223 memcpy (name, p, q - p);
227 append_include_chain (pfile, name, path, 0);
229 /* Advance past this name. */
237 /* Append DIR to include path PATH. DIR must be permanently allocated
240 append_include_chain (pfile, dir, path, cxx_aware)
246 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
247 struct file_name_list *new;
251 _cpp_simplify_pathname (dir);
254 /* Dirs that don't exist are silently ignored. */
256 cpp_notice_from_errno (pfile, dir);
257 else if (CPP_OPTION (pfile, verbose))
258 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
262 if (!S_ISDIR (st.st_mode))
264 cpp_notice (pfile, "%s: Not a directory", dir);
269 if (len > pfile->max_include_len)
270 pfile->max_include_len = len;
272 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
275 new->ino = st.st_ino;
276 new->dev = st.st_dev;
278 new->sysp = cxx_aware ? 1 : 2;
281 new->name_map = NULL;
287 case QUOTE: APPEND (pend, quote, new); break;
288 case BRACKET: APPEND (pend, brack, new); break;
289 case SYSTEM: APPEND (pend, systm, new); break;
290 case AFTER: APPEND (pend, after, new); break;
294 /* Handle a duplicated include path. PREV is the link in the chain
295 before the duplicate. The duplicate is removed from the chain and
296 freed. Returns PREV. */
297 struct file_name_list *
298 remove_dup_dir (pfile, prev)
300 struct file_name_list *prev;
302 struct file_name_list *cur = prev->next;
304 if (CPP_OPTION (pfile, verbose))
305 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
307 prev->next = cur->next;
314 /* Remove duplicate directories from a chain. Returns the tail of the
315 chain, or NULL if the chain is empty. This algorithm is quadratic
316 in the number of -I switches, which is acceptable since there
317 aren't usually that many of them. */
318 struct file_name_list *
319 remove_dup_dirs (pfile, head)
321 struct file_name_list *head;
323 struct file_name_list *prev = NULL, *cur, *other;
325 for (cur = head; cur; cur = cur->next)
327 for (other = head; other != cur; other = other->next)
328 if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
330 cur = remove_dup_dir (pfile, prev);
339 /* Merge the four include chains together in the order quote, bracket,
340 system, after. Remove duplicate dirs (as determined by
341 INO_T_EQ()). The system_include and after_include chains are never
342 referred to again after this function; all access is through the
343 bracket_include path.
345 For the future: Check if the directory is empty (but
346 how?) and possibly preload the include hash. */
349 merge_include_chains (pfile)
352 struct file_name_list *quote, *brack, *systm, *qtail;
354 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
356 quote = pend->quote_head;
357 brack = pend->brack_head;
358 systm = pend->systm_head;
359 qtail = pend->quote_tail;
361 /* Paste together bracket, system, and after include chains. */
363 pend->systm_tail->next = pend->after_head;
365 systm = pend->after_head;
368 pend->brack_tail->next = systm;
372 /* This is a bit tricky. First we drop dupes from the quote-include
373 list. Then we drop dupes from the bracket-include list.
374 Finally, if qtail and brack are the same directory, we cut out
377 We can't just merge the lists and then uniquify them because
378 then we may lose directories from the <> search path that should
379 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
380 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
381 -Ibar -I- -Ifoo -Iquux. */
383 remove_dup_dirs (pfile, brack);
384 qtail = remove_dup_dirs (pfile, quote);
390 /* If brack == qtail, remove brack as it's simpler. */
391 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
392 brack = remove_dup_dir (pfile, qtail);
397 CPP_OPTION (pfile, quote_include) = quote;
398 CPP_OPTION (pfile, bracket_include) = brack;
405 /* For non-ASCII hosts, the array needs to be sorted at runtime. */
406 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
409 /* Set up the trigraph map for trigraph_ok, trigraph_replace and
411 init_trigraph_map ();
413 /* Set up the IStable. This doesn't do anything if we were compiled
414 with a compiler that supports C99 designated initializers. */
418 /* Initialize a cpp_reader structure. */
420 cpp_reader_init (pfile)
423 memset ((char *) pfile, 0, sizeof (cpp_reader));
425 CPP_OPTION (pfile, dollars_in_ident) = 1;
426 CPP_OPTION (pfile, cplusplus_comments) = 1;
427 CPP_OPTION (pfile, warn_import) = 1;
428 CPP_OPTION (pfile, warn_paste) = 1;
429 CPP_OPTION (pfile, digraphs) = 1;
430 CPP_OPTION (pfile, discard_comments) = 1;
431 CPP_OPTION (pfile, show_column) = 1;
432 CPP_OPTION (pfile, tabstop) = 8;
434 CPP_OPTION (pfile, pending) =
435 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
437 _cpp_init_macros (pfile);
438 _cpp_init_stacks (pfile);
439 _cpp_init_includes (pfile);
440 _cpp_init_internal_pragmas (pfile);
443 /* Initialize a cpp_printer structure. As a side effect, open the
446 cpp_printer_init (pfile, print)
450 memset (print, '\0', sizeof (cpp_printer));
451 if (CPP_OPTION (pfile, out_fname) == NULL)
452 CPP_OPTION (pfile, out_fname) = "";
454 if (CPP_OPTION (pfile, out_fname)[0] == '\0')
455 print->outf = stdout;
458 print->outf = fopen (CPP_OPTION (pfile, out_fname), "w");
461 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
468 /* Free resources used by PFILE.
469 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
474 struct file_name_list *dir, *next;
476 while (CPP_BUFFER (pfile) != NULL)
477 cpp_pop_buffer (pfile);
480 deps_free (pfile->deps);
482 if (pfile->spec_nodes)
483 free (pfile->spec_nodes);
485 _cpp_free_temp_tokens (pfile);
486 _cpp_cleanup_includes (pfile);
487 _cpp_cleanup_stacks (pfile);
488 _cpp_cleanup_macros (pfile);
490 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = next)
499 /* This structure defines one built-in macro. A node of type TYPE will
500 be entered in the macro hash table under the name NAME, with value
501 VALUE (if any). If TYPE is T_OPERATOR, the CODE field is used instead.
503 Two values are not compile time constants, so we tag
504 them in the FLAGS field instead:
505 VERS value is the global version_string, quoted
506 ULP value is the global user_label_prefix
508 Also, macros with CPLUS set in the flags field are entered only for C++.
517 unsigned short flags;
524 #define B(n, t) { U n, 0, 0, t, 0, sizeof n - 1 }
525 #define C(n, v) { U n, v, 0, T_MACRO, 0, sizeof n - 1 }
526 #define X(n, f) { U n, 0, 0, T_MACRO, f, sizeof n - 1 }
527 #define O(n, c, f) { U n, 0, c, T_OPERATOR, f, sizeof n - 1 }
528 static const struct builtin builtin_array[] =
530 B("__TIME__", T_TIME),
531 B("__DATE__", T_DATE),
532 B("__FILE__", T_FILE),
533 B("__BASE_FILE__", T_BASE_FILE),
534 B("__LINE__", T_SPECLINE),
535 B("__INCLUDE_LEVEL__", T_INCLUDE_LEVEL),
536 B("__STDC__", T_STDC),
538 X("__VERSION__", VERS),
539 X("__USER_LABEL_PREFIX__", ULP),
540 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
541 C("__HAVE_BUILTIN_SETJMP__", "1"),
542 #ifndef NO_BUILTIN_SIZE_TYPE
543 C("__SIZE_TYPE__", SIZE_TYPE),
545 #ifndef NO_BUILTIN_PTRDIFF_TYPE
546 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
548 #ifndef NO_BUILTIN_WCHAR_TYPE
549 C("__WCHAR_TYPE__", WCHAR_TYPE),
551 #ifndef NO_BUILTIN_WINT_TYPE
552 C("__WINT_TYPE__", WINT_TYPE),
555 /* Named operators known to the preprocessor. These cannot be #defined
556 and always have their stated meaning. They are treated like normal
557 string tokens except for the type code and the meaning. Most of them
558 are only for C++ (but see iso646.h). */
559 O("defined", CPP_DEFINED, 0),
560 O("and", CPP_AND_AND, CPLUS),
561 O("and_eq", CPP_AND_EQ, CPLUS),
562 O("bitand", CPP_AND, CPLUS),
563 O("bitor", CPP_OR, CPLUS),
564 O("compl", CPP_COMPL, CPLUS),
565 O("not", CPP_NOT, CPLUS),
566 O("not_eq", CPP_NOT_EQ, CPLUS),
567 O("or", CPP_OR_OR, CPLUS),
568 O("or_eq", CPP_OR_EQ, CPLUS),
569 O("xor", CPP_XOR, CPLUS),
570 O("xor_eq", CPP_XOR_EQ, CPLUS),
575 #define builtin_array_end \
576 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
578 /* Subroutine of cpp_start_read; reads the builtins table above and
579 enters the macros into the hash table. */
581 initialize_builtins (pfile)
584 const struct builtin *b;
585 for(b = builtin_array; b < builtin_array_end; b++)
587 if (b->flags & CPLUS && ! CPP_OPTION (pfile, cplusplus))
590 if (b->type == T_MACRO)
597 /* Allocate enough space for 'name="value"\0'. */
598 str = xmalloc (b->len + strlen (version_string) + 4);
599 sprintf (str, "%s=\"%s\"", b->name, version_string);
604 val = user_label_prefix;
608 /* Allocate enough space for "name=value\0". */
609 str = xmalloc (b->len + strlen (val) + 2);
610 sprintf(str, "%s=%s", b->name, val);
613 cpp_define (pfile, str);
618 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
620 if (b->type == T_OPERATOR)
621 hp->value.code = b->code;
627 #undef builtin_array_end
629 /* Another subroutine of cpp_start_read. This one sets up to do
630 dependency-file output. */
632 initialize_dependency_output (pfile)
635 char *spec, *s, *output_file;
637 /* Either of two environment variables can specify output of deps.
638 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
639 where OUTPUT_FILE is the file to write deps info to
640 and DEPS_TARGET is the target to mention in the deps. */
642 if (CPP_OPTION (pfile, print_deps) == 0)
644 spec = getenv ("DEPENDENCIES_OUTPUT");
646 CPP_OPTION (pfile, print_deps) = 1;
649 spec = getenv ("SUNPRO_DEPENDENCIES");
651 CPP_OPTION (pfile, print_deps) = 2;
656 /* Find the space before the DEPS_TARGET, if there is one. */
657 s = strchr (spec, ' ');
660 CPP_OPTION (pfile, deps_target) = s + 1;
661 output_file = (char *) xmalloc (s - spec + 1);
662 memcpy (output_file, spec, s - spec);
663 output_file[s - spec] = 0;
667 CPP_OPTION (pfile, deps_target) = 0;
671 CPP_OPTION (pfile, deps_file) = output_file;
672 CPP_OPTION (pfile, print_deps_append) = 1;
675 pfile->deps = deps_init ();
677 /* Print the expected object file name as the target of this Make-rule. */
678 if (CPP_OPTION (pfile, deps_target))
679 deps_add_target (pfile->deps, CPP_OPTION (pfile, deps_target));
680 else if (*CPP_OPTION (pfile, in_fname) == 0)
681 deps_add_target (pfile->deps, "-");
683 deps_calc_target (pfile->deps, CPP_OPTION (pfile, in_fname));
685 if (CPP_OPTION (pfile, in_fname))
686 deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
689 /* And another subroutine. This one sets up the standard include path. */
691 initialize_standard_includes (pfile)
695 const struct default_include *p;
696 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
698 /* Several environment variables may add to the include search path.
699 CPATH specifies an additional list of directories to be searched
700 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
701 etc. specify an additional list of directories to be searched as
702 if specified with -isystem, for the language indicated. */
704 GET_ENV_PATH_LIST (path, "CPATH");
705 if (path != 0 && *path != 0)
706 path_include (pfile, path, BRACKET);
708 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
711 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
714 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
717 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
720 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
723 if (path != 0 && *path != 0)
724 path_include (pfile, path, SYSTEM);
726 /* Search "translated" versions of GNU directories.
727 These have /usr/local/lib/gcc... replaced by specd_prefix. */
728 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
730 /* Remove the `include' from /usr/local/lib/gcc.../include.
731 GCC_INCLUDE_DIR will always end in /include. */
732 int default_len = cpp_GCC_INCLUDE_DIR_len;
733 char *default_prefix = (char *) alloca (default_len + 1);
734 int specd_len = strlen (specd_prefix);
736 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
737 default_prefix[default_len] = '\0';
739 for (p = cpp_include_defaults; p->fname; p++)
741 /* Some standard dirs are only for C++. */
743 || (CPP_OPTION (pfile, cplusplus)
744 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
746 /* Does this dir start with the prefix? */
747 if (!memcmp (p->fname, default_prefix, default_len))
749 /* Yes; change prefix and add to search list. */
750 int flen = strlen (p->fname);
751 int this_len = specd_len + flen - default_len;
752 char *str = (char *) xmalloc (this_len + 1);
753 memcpy (str, specd_prefix, specd_len);
754 memcpy (str + specd_len,
755 p->fname + default_len,
756 flen - default_len + 1);
758 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
764 /* Search ordinary names for GNU include directories. */
765 for (p = cpp_include_defaults; p->fname; p++)
767 /* Some standard dirs are only for C++. */
769 || (CPP_OPTION (pfile, cplusplus)
770 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
772 /* XXX Potential memory leak! */
773 char *str = xstrdup (update_path (p->fname, p->component));
774 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
779 /* This is called after options have been processed.
780 * Check options for consistency, and setup for processing input
781 * from the file named FNAME. (Use standard input if FNAME==NULL.)
782 * Return 1 on success, 0 on failure.
786 cpp_start_read (pfile, print, fname)
791 struct pending_option *p, *q;
793 /* -MG doesn't select the form of output and must be specified with one of
794 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
795 inhibit compilation. */
796 if (CPP_OPTION (pfile, print_deps_missing_files)
797 && (CPP_OPTION (pfile, print_deps) == 0
798 || !CPP_OPTION (pfile, no_output)))
800 cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
804 /* -Wtraditional is not useful in C++ mode. */
805 if (CPP_OPTION (pfile, cplusplus))
806 CPP_OPTION (pfile, warn_traditional) = 0;
808 /* Do not warn about invalid token pasting if -lang-asm. */
809 if (CPP_OPTION (pfile, lang_asm))
810 CPP_OPTION (pfile, warn_paste) = 0;
812 /* Set this if it hasn't been set already. */
813 if (user_label_prefix == NULL)
814 user_label_prefix = USER_LABEL_PREFIX;
816 /* Figure out if we need to save function macro parameter spellings.
817 We don't use CPP_PEDANTIC() here because that depends on whether
818 or not the current file is a system header, and there is no
820 pfile->save_parameter_spellings =
821 CPP_OPTION (pfile, pedantic)
822 || CPP_OPTION (pfile, debug_output)
823 || CPP_OPTION (pfile, dump_macros) == dump_definitions
824 || CPP_OPTION (pfile, dump_macros) == dump_only;
826 /* Set up the tables used by read_and_prescan. */
827 _cpp_init_input_buffer (pfile);
829 /* Set up the include search path now. */
830 if (! CPP_OPTION (pfile, no_standard_includes))
831 initialize_standard_includes (pfile);
833 merge_include_chains (pfile);
835 /* With -v, print the list of dirs to search. */
836 if (CPP_OPTION (pfile, verbose))
838 struct file_name_list *l;
839 fprintf (stderr, _("#include \"...\" search starts here:\n"));
840 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
842 if (l == CPP_OPTION (pfile, bracket_include))
843 fprintf (stderr, _("#include <...> search starts here:\n"));
844 fprintf (stderr, " %s\n", l->name);
846 fprintf (stderr, _("End of search list.\n"));
849 /* Open the main input file. This must be done early, so we have a
850 buffer to stand on. */
851 if (CPP_OPTION (pfile, in_fname) == NULL
852 || *CPP_OPTION (pfile, in_fname) == 0)
854 CPP_OPTION (pfile, in_fname) = fname;
855 if (CPP_OPTION (pfile, in_fname) == NULL)
856 CPP_OPTION (pfile, in_fname) = "";
858 if (CPP_OPTION (pfile, out_fname) == NULL)
859 CPP_OPTION (pfile, out_fname) = "";
861 if (!cpp_read_file (pfile, fname))
864 initialize_dependency_output (pfile);
866 /* Install __LINE__, etc. */
867 initialize_builtins (pfile);
869 /* Do -U's, -D's and -A's in the order they were seen. */
870 p = CPP_OPTION (pfile, pending)->directive_head;
873 (*p->handler) (pfile, p->arg);
878 pfile->done_initializing = 1;
880 /* We start at line 1 of the main input file. */
883 print->last_fname = CPP_BUFFER (pfile)->nominal_fname;
887 /* The -imacros files can be scanned now, but the -include files
888 have to be pushed onto the include stack and processed later,
889 in the main loop calling cpp_get_token. */
891 p = CPP_OPTION (pfile, pending)->imacros_head;
894 if (cpp_read_file (pfile, p->arg))
895 cpp_scan_buffer_nooutput (pfile);
901 p = CPP_OPTION (pfile, pending)->include_head;
904 cpp_read_file (pfile, p->arg);
910 free (CPP_OPTION (pfile, pending));
911 CPP_OPTION (pfile, pending) = NULL;
916 /* This is called at the end of preprocessing. It pops the
917 last buffer and writes dependency output. It should also
918 clear macro definitions, such that you could call cpp_start_read
919 with a new filename to restart processing. */
921 cpp_finish (pfile, print)
925 if (CPP_BUFFER (pfile))
927 cpp_ice (pfile, "buffers still stacked in cpp_finish");
928 while (CPP_BUFFER (pfile))
929 cpp_pop_buffer (pfile);
932 /* Don't write the deps file if preprocessing has failed. */
933 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
935 /* Stream on which to print the dependency information. */
936 FILE *deps_stream = 0;
937 const char *deps_mode
938 = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
939 if (CPP_OPTION (pfile, deps_file) == 0)
940 deps_stream = stdout;
943 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
944 if (deps_stream == 0)
945 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
949 deps_write (pfile->deps, deps_stream, 72);
950 if (CPP_OPTION (pfile, deps_file))
952 if (ferror (deps_stream) || fclose (deps_stream) != 0)
953 cpp_fatal (pfile, "I/O error on output");
958 /* Flush any pending output. */
961 if (pfile->need_newline)
962 putc ('\n', print->outf);
963 if (ferror (print->outf) || fclose (print->outf))
964 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
967 /* Report on headers that could use multiple include guards. */
968 if (CPP_OPTION (pfile, print_include_names))
969 _cpp_report_missing_guards (pfile);
973 new_pending_directive (pend, text, handler)
974 struct cpp_pending *pend;
976 cl_directive_handler handler;
978 struct pending_option *o = (struct pending_option *)
979 xmalloc (sizeof (struct pending_option));
983 o->handler = handler;
984 APPEND (pend, directive, o);
987 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
988 I.e. a const string initializer with parens around it. That is
989 what N_("string") resolves to, so we make no_* be macros instead. */
990 #define no_arg N_("Argument missing after %s")
991 #define no_ass N_("Assertion missing after %s")
992 #define no_dir N_("Directory name missing after %s")
993 #define no_fil N_("File name missing after %s")
994 #define no_mac N_("Macro name missing after %s")
995 #define no_pth N_("Path name missing after %s")
996 #define no_num N_("Number missing after %s")
998 /* This is the list of all command line options, with the leading
999 "-" removed. It must be sorted in ASCII collating order. */
1000 #define COMMAND_LINE_OPTIONS \
1001 DEF_OPT("", 0, OPT_stdin_stdout) \
1002 DEF_OPT("$", 0, OPT_dollar) \
1003 DEF_OPT("+", 0, OPT_plus) \
1004 DEF_OPT("-help", 0, OPT__help) \
1005 DEF_OPT("-version", 0, OPT__version) \
1006 DEF_OPT("A", no_ass, OPT_A) \
1007 DEF_OPT("C", 0, OPT_C) \
1008 DEF_OPT("D", no_mac, OPT_D) \
1009 DEF_OPT("H", 0, OPT_H) \
1010 DEF_OPT("I", no_dir, OPT_I) \
1011 DEF_OPT("M", 0, OPT_M) \
1012 DEF_OPT("MD", no_fil, OPT_MD) \
1013 DEF_OPT("MG", 0, OPT_MG) \
1014 DEF_OPT("MM", 0, OPT_MM) \
1015 DEF_OPT("MMD", no_fil, OPT_MMD) \
1016 DEF_OPT("P", 0, OPT_P) \
1017 DEF_OPT("U", no_mac, OPT_U) \
1018 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1019 DEF_OPT("d", no_arg, OPT_d) \
1020 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1021 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1022 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1023 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1024 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1025 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1026 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1027 DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
1028 DEF_OPT("h", 0, OPT_h) \
1029 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1030 DEF_OPT("imacros", no_fil, OPT_imacros) \
1031 DEF_OPT("include", no_fil, OPT_include) \
1032 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1033 DEF_OPT("isystem", no_dir, OPT_isystem) \
1034 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1035 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1036 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1037 DEF_OPT("lang-c", 0, OPT_lang_c) \
1038 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1039 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1040 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1041 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1042 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1043 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1044 DEF_OPT("o", no_fil, OPT_o) \
1045 DEF_OPT("pedantic", 0, OPT_pedantic) \
1046 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1047 DEF_OPT("remap", 0, OPT_remap) \
1048 DEF_OPT("std=c89", 0, OPT_std_c89) \
1049 DEF_OPT("std=c99", 0, OPT_std_c99) \
1050 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1051 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1052 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1053 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1054 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1055 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1056 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1057 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1058 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1059 DEF_OPT("v", 0, OPT_v) \
1060 DEF_OPT("w", 0, OPT_w)
1062 #define DEF_OPT(text, msg, code) code,
1065 COMMAND_LINE_OPTIONS
1072 const char *opt_text;
1075 enum opt_code opt_code;
1078 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1080 static struct cl_option cl_options[] =
1082 static const struct cl_option cl_options[] =
1085 COMMAND_LINE_OPTIONS
1088 #undef COMMAND_LINE_OPTIONS
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 = memcmp (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 (memcmp (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 (pend, "__STDC_VERSION__=199901L", cpp_define);
1350 case OPT_std_iso9899_199409:
1351 new_pending_directive (pend, "__STDC_VERSION__=199409L", cpp_define);
1353 case OPT_std_iso9899_1990:
1356 CPP_OPTION (pfile, cplusplus) = 0;
1357 CPP_OPTION (pfile, cplusplus_comments) = 0;
1358 CPP_OPTION (pfile, c89) = 1;
1359 CPP_OPTION (pfile, c99) = 0;
1360 CPP_OPTION (pfile, objc) = 0;
1361 CPP_OPTION (pfile, digraphs) = opt_code == OPT_std_iso9899_199409;
1362 CPP_OPTION (pfile, trigraphs) = 1;
1363 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
1365 case OPT_std_iso9899_199x:
1366 case OPT_std_iso9899_1999:
1369 CPP_OPTION (pfile, cplusplus) = 0;
1370 CPP_OPTION (pfile, cplusplus_comments) = 1;
1371 CPP_OPTION (pfile, c89) = 0;
1372 CPP_OPTION (pfile, c99) = 1;
1373 CPP_OPTION (pfile, objc) = 0;
1374 CPP_OPTION (pfile, digraphs) = 1;
1375 CPP_OPTION (pfile, trigraphs) = 1;
1376 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
1377 new_pending_directive (pend, "__STDC_VERSION__=199901L", cpp_define);
1380 if (CPP_OPTION (pfile, out_fname) != NULL)
1382 cpp_fatal (pfile, "Output filename specified twice");
1385 CPP_OPTION (pfile, out_fname) = arg;
1386 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1387 CPP_OPTION (pfile, out_fname) = "";
1390 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1391 #ifdef TARGET_VERSION
1394 fputc ('\n', stderr);
1395 CPP_OPTION (pfile, verbose) = 1;
1397 case OPT_stdin_stdout:
1398 /* JF handle '-' as file name meaning stdin or stdout */
1399 if (CPP_OPTION (pfile, in_fname) == NULL)
1400 CPP_OPTION (pfile, in_fname) = "";
1401 else if (CPP_OPTION (pfile, out_fname) == NULL)
1402 CPP_OPTION (pfile, out_fname) = "";
1405 /* Args to -d specify what parts of macros to dump.
1406 Silently ignore unrecognised options; they may
1407 be aimed at the compiler proper. */
1411 while ((c = *arg++) != '\0')
1415 CPP_OPTION (pfile, dump_macros) = dump_only;
1416 CPP_OPTION (pfile, no_output) = 1;
1419 CPP_OPTION (pfile, dump_macros) = dump_names;
1422 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1425 CPP_OPTION (pfile, dump_includes) = 1;
1430 /* The style of the choices here is a bit mixed.
1431 The chosen scheme is a hybrid of keeping all options in one string
1432 and specifying each option in a separate argument:
1433 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1434 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1435 -M[M][G][D file]. This is awkward to handle in specs, and is not
1437 /* ??? -MG must be specified in addition to one of -M or -MM.
1438 This can be relaxed in the future without breaking anything.
1439 The converse isn't true. */
1441 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1443 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1449 if (opt_code == OPT_M || opt_code == OPT_MD)
1450 CPP_OPTION (pfile, print_deps) = 2;
1452 CPP_OPTION (pfile, print_deps) = 1;
1454 /* For -MD and -MMD options, write deps on file named by next arg */
1455 /* For -M and -MM, write deps on standard output
1456 and suppress the usual output. */
1457 if (opt_code == OPT_MD || opt_code == OPT_MMD)
1458 CPP_OPTION (pfile, deps_file) = arg;
1460 CPP_OPTION (pfile, no_output) = 1;
1465 /* -A with an argument beginning with '-' acts as
1466 #unassert on whatever immediately follows the '-'.
1467 If "-" is the whole argument, we eliminate all
1468 predefined macros and assertions, including those
1469 that were specified earlier on the command line.
1470 That way we can get rid of any that were passed
1471 automatically in from GCC. */
1475 struct pending_option *o1, *o2;
1477 o1 = pend->directive_head;
1484 pend->directive_head = NULL;
1485 pend->directive_tail = NULL;
1488 new_pending_directive (pend, arg + 1, cpp_unassert);
1491 new_pending_directive (pend, arg, cpp_assert);
1494 new_pending_directive (pend, arg, cpp_undef);
1496 case OPT_I: /* Add directory to path for includes. */
1497 if (!strcmp (arg, "-"))
1500 Use the preceding -I directories for #include "..."
1501 but not #include <...>.
1502 Don't search the directory of the present file
1503 for #include "...". (Note that -I. -I- is not the same as
1504 the default setup; -I. uses the compiler's working dir.) */
1505 if (! CPP_OPTION (pfile, ignore_srcdir))
1507 pend->quote_head = pend->brack_head;
1508 pend->quote_tail = pend->brack_tail;
1509 pend->brack_head = 0;
1510 pend->brack_tail = 0;
1511 CPP_OPTION (pfile, ignore_srcdir) = 1;
1515 cpp_fatal (pfile, "-I- specified twice");
1520 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1523 /* Add directory to beginning of system include path, as a system
1524 include directory. */
1525 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1529 struct pending_option *o = (struct pending_option *)
1530 xmalloc (sizeof (struct pending_option));
1533 /* This list has to be built in reverse order so that
1534 when cpp_start_read pushes all the -include files onto
1535 the buffer stack, they will be scanned in forward order. */
1536 o->next = pend->include_head;
1537 pend->include_head = o;
1542 struct pending_option *o = (struct pending_option *)
1543 xmalloc (sizeof (struct pending_option));
1547 APPEND (pend, imacros, o);
1550 case OPT_iwithprefix:
1551 /* Add directory to end of path for includes,
1552 with the default prefix at the front of its name. */
1554 case OPT_iwithprefixbefore:
1555 /* Add directory to main path for includes,
1556 with the default prefix at the front of its name. */
1563 if (CPP_OPTION (pfile, include_prefix) != 0)
1565 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1566 fname = xmalloc (ipl + len + 1);
1567 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1568 memcpy (fname + ipl, arg, len + 1);
1570 else if (cpp_GCC_INCLUDE_DIR_len)
1572 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1573 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1574 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1577 fname = xstrdup (arg);
1579 append_include_chain (pfile, fname,
1580 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1584 /* Add directory to end of path for includes. */
1585 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1588 /* Silently ignore unrecognised options */
1589 if (!strcmp (argv[i], "-Wall"))
1591 CPP_OPTION (pfile, warn_trigraphs) = 1;
1592 CPP_OPTION (pfile, warn_comments) = 1;
1594 else if (!strcmp (argv[i], "-Wtraditional"))
1595 CPP_OPTION (pfile, warn_traditional) = 1;
1596 else if (!strcmp (argv[i], "-Wtrigraphs"))
1597 CPP_OPTION (pfile, warn_trigraphs) = 1;
1598 else if (!strcmp (argv[i], "-Wcomment"))
1599 CPP_OPTION (pfile, warn_comments) = 1;
1600 else if (!strcmp (argv[i], "-Wcomments"))
1601 CPP_OPTION (pfile, warn_comments) = 1;
1602 else if (!strcmp (argv[i], "-Wundef"))
1603 CPP_OPTION (pfile, warn_undef) = 1;
1604 else if (!strcmp (argv[i], "-Wimport"))
1605 CPP_OPTION (pfile, warn_import) = 1;
1606 else if (!strcmp (argv[i], "-Wpaste"))
1607 CPP_OPTION (pfile, warn_paste) = 1;
1608 else if (!strcmp (argv[i], "-Werror"))
1609 CPP_OPTION (pfile, warnings_are_errors) = 1;
1610 else if (!strcmp (argv[i], "-Wno-traditional"))
1611 CPP_OPTION (pfile, warn_traditional) = 0;
1612 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1613 CPP_OPTION (pfile, warn_trigraphs) = 0;
1614 else if (!strcmp (argv[i], "-Wno-comment"))
1615 CPP_OPTION (pfile, warn_comments) = 0;
1616 else if (!strcmp (argv[i], "-Wno-comments"))
1617 CPP_OPTION (pfile, warn_comments) = 0;
1618 else if (!strcmp (argv[i], "-Wno-undef"))
1619 CPP_OPTION (pfile, warn_undef) = 0;
1620 else if (!strcmp (argv[i], "-Wno-import"))
1621 CPP_OPTION (pfile, warn_import) = 0;
1622 else if (!strcmp (argv[i], "-Wno-paste"))
1623 CPP_OPTION (pfile, warn_paste) = 0;
1624 else if (!strcmp (argv[i], "-Wno-error"))
1625 CPP_OPTION (pfile, warnings_are_errors) = 0;
1634 opt_comp (const void *p1, const void *p2)
1636 return strcmp (((struct cl_option *)p1)->opt_text,
1637 ((struct cl_option *)p2)->opt_text);
1641 /* Handle command-line options in (argc, argv).
1642 Can be called multiple times, to handle multiple sets of options.
1643 Returns if an unrecognized option is seen.
1644 Returns number of strings consumed. */
1646 cpp_handle_options (pfile, argc, argv)
1652 int strings_processed;
1654 for (i = 0; i < argc; i += strings_processed)
1656 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1657 if (strings_processed == 0)
1666 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1667 /* To keep the lines from getting too long for some compilers, limit
1668 to about 500 characters (6 lines) per chunk. */
1671 -include <file> Include the contents of <file> before other files\n\
1672 -imacros <file> Accept definition of macros in <file>\n\
1673 -iprefix <path> Specify <path> as a prefix for next two options\n\
1674 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1675 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1676 -isystem <dir> Add <dir> to the start of the system include path\n\
1679 -idirafter <dir> Add <dir> to the end of the system include path\n\
1680 -I <dir> Add <dir> to the end of the main include path\n\
1681 -I- Fine-grained include path control; see info docs\n\
1682 -nostdinc Do not search system include directories\n\
1683 (dirs specified with -isystem will still be used)\n\
1684 -nostdinc++ Do not search system include directories for C++\n\
1685 -o <file> Put output into <file>\n\
1688 -pedantic Issue all warnings demanded by strict ISO C\n\
1689 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1690 -trigraphs Support ISO C trigraphs\n\
1691 -lang-c Assume that the input sources are in C\n\
1692 -lang-c89 Assume that the input sources are in C89\n\
1695 -lang-c++ Assume that the input sources are in C++\n\
1696 -lang-objc Assume that the input sources are in ObjectiveC\n\
1697 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1698 -lang-asm Assume that the input sources are in assembler\n\
1701 -std=<std name> Specify the conformance standard; one of:\n\
1702 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1703 iso9899:199409, iso9899:1999\n\
1704 -+ Allow parsing of C++ style features\n\
1705 -w Inhibit warning messages\n\
1706 -Wtrigraphs Warn if trigraphs are encountered\n\
1707 -Wno-trigraphs Do not warn about trigraphs\n\
1708 -Wcomment{s} Warn if one comment starts inside another\n\
1711 -Wno-comment{s} Do not warn about comments\n\
1712 -Wtraditional Warn about features not present in traditional C\n\
1713 -Wno-traditional Do not warn about traditional C\n\
1714 -Wundef Warn if an undefined macro is used by #if\n\
1715 -Wno-undef Do not warn about testing undefined macros\n\
1716 -Wimport Warn about the use of the #import directive\n\
1719 -Wno-import Do not warn about the use of #import\n\
1720 -Werror Treat all warnings as errors\n\
1721 -Wno-error Do not treat warnings as errors\n\
1722 -Wall Enable all preprocessor warnings\n\
1723 -M Generate make dependencies\n\
1724 -MM As -M, but ignore system header files\n\
1727 -MD As -M, but put output in a .d file\n\
1728 -MMD As -MD, but ignore system header files\n\
1729 -MG Treat missing header file as generated files\n\
1730 -g3 Include #define and #undef directives in the output\n\
1731 -D<macro> Define a <macro> with string '1' as its value\n\
1732 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1735 -A<question> (<answer>) Assert the <answer> to <question>\n\
1736 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1737 -U<macro> Undefine <macro> \n\
1738 -v Display the version number\n\
1739 -H Print the name of header files as they are used\n\
1740 -C Do not discard comments\n\
1743 -dM Display a list of macro definitions active at end\n\
1744 -dD Preserve macro definitions in output\n\
1745 -dN As -dD except that only the names are preserved\n\
1746 -dI Include #include directives in the output\n\
1747 -ftabstop=<number> Distance between tab stops for column reporting\n\
1748 -P Do not generate #line directives\n\
1749 -$ Do not allow '$' in identifiers\n\
1752 -remap Remap file names when including files.\n\
1753 --version Display version information\n\
1754 -h or --help Display this information\n\