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. */
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 #ifndef STANDARD_INCLUDE_DIR
51 #define STANDARD_INCLUDE_DIR "/usr/include"
54 /* We let tm.h override the types used here, to handle trivial differences
55 such as the choice of unsigned int or long unsigned int for size_t.
56 When machines start needing nontrivial differences in the size type,
57 it would be best to do something here to figure out automatically
58 from other information what type to use. */
60 /* The string value for __SIZE_TYPE__. */
63 #define SIZE_TYPE "long unsigned int"
66 /* The string value for __PTRDIFF_TYPE__. */
69 #define PTRDIFF_TYPE "long int"
72 /* The string value for __WCHAR_TYPE__. */
75 #define WCHAR_TYPE "int"
78 /* The string value for __USER_LABEL_PREFIX__ */
80 #ifndef USER_LABEL_PREFIX
81 #define USER_LABEL_PREFIX ""
84 /* The string value for __REGISTER_PREFIX__ */
86 #ifndef REGISTER_PREFIX
87 #define REGISTER_PREFIX ""
90 /* This is the default list of directories to search for include files.
91 It may be overridden by the various -I and -ixxx options.
93 #include "file" looks in the same directory as the current file,
95 #include <file> just looks in this list.
97 All these directories are treated as `system' include directories
98 (they are not subject to pedantic warnings in some cases). */
100 struct default_include
102 const char *fname; /* The name of the directory. */
103 const char *component; /* The component containing the directory
104 (see update_path in prefix.c) */
105 int cplusplus; /* Only look here if we're compiling C++. */
106 int cxx_aware; /* Includes in this directory don't need to
107 be wrapped in extern "C" when compiling
111 #ifndef STANDARD_INCLUDE_COMPONENT
112 #define STANDARD_INCLUDE_COMPONENT 0
116 #undef LOCAL_INCLUDE_DIR
117 #undef SYSTEM_INCLUDE_DIR
118 #undef STANDARD_INCLUDE_DIR
120 #undef CROSS_INCLUDE_DIR
123 static const struct default_include include_defaults_array[]
124 #ifdef INCLUDE_DEFAULTS
128 #ifdef GPLUSPLUS_INCLUDE_DIR
129 /* Pick up GNU C++ specific include files. */
130 { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },
132 #ifdef LOCAL_INCLUDE_DIR
133 /* /usr/local/include comes before the fixincluded header files. */
134 { LOCAL_INCLUDE_DIR, 0, 0, 1 },
136 #ifdef GCC_INCLUDE_DIR
137 /* This is the dir for fixincludes and for gcc's private headers. */
138 { GCC_INCLUDE_DIR, "GCC", 0, 0 },
140 #ifdef CROSS_INCLUDE_DIR
141 /* One place the target system's headers might be. */
142 { CROSS_INCLUDE_DIR, "GCC", 0, 0 },
144 #ifdef TOOL_INCLUDE_DIR
145 /* Another place the target system's headers might be. */
146 { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1 },
148 #ifdef SYSTEM_INCLUDE_DIR
149 /* Some systems have an extra dir of include files. */
150 { SYSTEM_INCLUDE_DIR, 0, 0, 0 },
152 #ifdef STANDARD_INCLUDE_DIR
153 /* /usr/include comes dead last. */
154 { STANDARD_INCLUDE_DIR, STANDARD_INCLUDE_COMPONENT, 0, 0 },
158 #endif /* no INCLUDE_DEFAULTS */
160 /* Internal structures and prototypes. */
162 /* A `struct pending_option' remembers one -D, -A, -U, -include, or -imacros
163 switch. There are four lists: one for -D and -U, one for -A, one
164 for -include, one for -imacros. `undef' is set for -U, clear for
165 -D, ignored for the others.
166 (Future: add an equivalent of -U for -A) */
168 typedef void (* cl_directive_handler) (cpp_reader *, const char *);
169 struct pending_option
171 struct pending_option *next;
173 cl_directive_handler handler;
176 /* The `pending' structure accumulates all the options that are not
177 actually processed until we hit cpp_start_read. It consists of
178 several lists, one for each type of option. We keep both head and
179 tail pointers for quick insertion. */
182 struct pending_option *directive_head, *directive_tail;
184 struct file_name_list *quote_head, *quote_tail;
185 struct file_name_list *brack_head, *brack_tail;
186 struct file_name_list *systm_head, *systm_tail;
187 struct file_name_list *after_head, *after_tail;
189 struct pending_option *imacros_head, *imacros_tail;
190 struct pending_option *include_head, *include_tail;
194 #define APPEND(pend, list, elt) \
195 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
196 else (pend)->list##_tail->next = (elt); \
197 (pend)->list##_tail = (elt); \
200 #define APPEND(pend, list, elt) \
201 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
202 else (pend)->list/**/_tail->next = (elt); \
203 (pend)->list/**/_tail = (elt); \
207 static void print_help PARAMS ((void));
208 static void path_include PARAMS ((cpp_reader *,
209 struct cpp_pending *,
211 static void initialize_builtins PARAMS ((cpp_reader *));
212 static void append_include_chain PARAMS ((cpp_reader *,
213 struct cpp_pending *,
215 static void merge_include_chains PARAMS ((struct cpp_options *));
217 static void dump_special_to_buffer PARAMS ((cpp_reader *, const char *));
218 static void initialize_dependency_output PARAMS ((cpp_reader *));
219 static void initialize_standard_includes PARAMS ((cpp_reader *));
220 static void new_pending_directive PARAMS ((struct cpp_options *,
222 cl_directive_handler));
224 static int opt_comp PARAMS ((const void *, const void *));
226 static int parse_option PARAMS ((const char *));
227 static int handle_option PARAMS ((cpp_reader *, int, char **));
229 /* Fourth argument to append_include_chain: chain to use */
230 enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };
232 /* If we have designated initializers (GCC >2.7, or C99) this table
233 can be initialized, constant data. Otherwise, it has to be filled
236 #if (GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)
237 #define init_IStable() /* nothing */
238 #define ISTABLE const unsigned char _cpp_IStable[256] = {
240 #define s(p, v) [p] = v,
242 #define ISTABLE unsigned char _cpp_IStable[256] = { 0 }; \
243 static void init_IStable PARAMS ((void)) { \
244 unsigned char *x = _cpp_IStable;
246 #define s(p, v) x[p] = v;
249 #define A(x) s(x, ISidnum|ISidstart)
250 #define N(x) s(x, ISidnum|ISnumstart)
251 #define H(x) s(x, IShspace|ISspace)
252 #define S(x) s(x, ISspace)
257 A('a') A('b') A('c') A('d') A('e') A('f') A('g') A('h') A('i')
258 A('j') A('k') A('l') A('m') A('n') A('o') A('p') A('q') A('r')
259 A('s') A('t') A('u') A('v') A('w') A('x') A('y') A('z')
261 A('A') A('B') A('C') A('D') A('E') A('F') A('G') A('H') A('I')
262 A('J') A('K') A('L') A('M') A('N') A('O') A('P') A('Q') A('R')
263 A('S') A('T') A('U') A('V') A('W') A('X') A('Y') A('Z')
265 N('1') N('2') N('3') N('4') N('5') N('6') N('7') N('8') N('9') N('0')
267 H(' ') H('\t') H('\v') H('\f')
280 /* Given a colon-separated list of file names PATH,
281 add all the names to the search path for include files. */
284 path_include (pfile, pend, list, path)
286 struct cpp_pending *pend;
296 /* Find the end of this name. */
298 while (*q != 0 && *q != PATH_SEPARATOR) q++;
301 /* An empty name in the path stands for the current directory. */
302 name = (char *) xmalloc (2);
308 /* Otherwise use the directory that is named. */
309 name = (char *) xmalloc (q - p + 1);
310 memcpy (name, p, q - p);
314 append_include_chain (pfile, pend, name, path, 0);
316 /* Advance past this name. */
324 /* Append DIR to include path PATH. DIR must be permanently allocated
327 append_include_chain (pfile, pend, dir, path, cxx_aware)
329 struct cpp_pending *pend;
334 struct file_name_list *new;
338 _cpp_simplify_pathname (dir);
341 /* Dirs that don't exist are silently ignored. */
343 cpp_notice_from_errno (pfile, dir);
344 else if (CPP_OPTIONS (pfile)->verbose)
345 fprintf (stderr, _("ignoring nonexistent directory `%s'\n"), dir);
349 if (!S_ISDIR (st.st_mode))
351 cpp_notice (pfile, "%s: Not a directory", dir);
356 if (len > pfile->max_include_len)
357 pfile->max_include_len = len;
359 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
362 new->ino = st.st_ino;
363 new->dev = st.st_dev;
365 new->sysp = cxx_aware ? 1 : 2;
368 new->name_map = NULL;
374 case QUOTE: APPEND (pend, quote, new); break;
375 case BRACKET: APPEND (pend, brack, new); break;
376 case SYSTEM: APPEND (pend, systm, new); break;
377 case AFTER: APPEND (pend, after, new); break;
381 /* Merge the four include chains together in the order quote, bracket,
382 system, after. Remove duplicate dirs (as determined by
383 INO_T_EQ()). The system_include and after_include chains are never
384 referred to again after this function; all access is through the
385 bracket_include path.
387 For the future: Check if the directory is empty (but
388 how?) and possibly preload the include hash. */
391 merge_include_chains (opts)
392 struct cpp_options *opts;
394 struct file_name_list *prev, *cur, *other;
395 struct file_name_list *quote, *brack, *systm, *after;
396 struct file_name_list *qtail, *btail, *stail, *atail;
398 qtail = opts->pending->quote_tail;
399 btail = opts->pending->brack_tail;
400 stail = opts->pending->systm_tail;
401 atail = opts->pending->after_tail;
403 quote = opts->pending->quote_head;
404 brack = opts->pending->brack_head;
405 systm = opts->pending->systm_head;
406 after = opts->pending->after_head;
408 /* Paste together bracket, system, and after include chains. */
418 /* This is a bit tricky.
419 First we drop dupes from the quote-include list.
420 Then we drop dupes from the bracket-include list.
421 Finally, if qtail and brack are the same directory,
424 We can't just merge the lists and then uniquify them because
425 then we may lose directories from the <> search path that should
426 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
427 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
428 -Ibar -I- -Ifoo -Iquux.
430 Note that this algorithm is quadratic in the number of -I switches,
431 which is acceptable since there aren't usually that many of them. */
433 for (cur = quote, prev = NULL; cur; cur = cur->next)
435 for (other = quote; other != cur; other = other->next)
436 if (INO_T_EQ (cur->ino, other->ino)
437 && cur->dev == other->dev)
440 fprintf (stderr, _("ignoring duplicate directory `%s'\n"),
443 prev->next = cur->next;
453 for (cur = brack; cur; cur = cur->next)
455 for (other = brack; other != cur; other = other->next)
456 if (INO_T_EQ (cur->ino, other->ino)
457 && cur->dev == other->dev)
460 fprintf (stderr, _("ignoring duplicate directory `%s'\n"),
463 prev->next = cur->next;
474 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
479 fprintf (stderr, _("ignoring duplicate directory `%s'\n"),
489 while (cur->next != qtail)
493 fprintf (stderr, _("ignoring duplicate directory `%s'\n"),
506 opts->quote_include = quote;
507 opts->bracket_include = brack;
511 /* Write out a #define command for the special named MACRO_NAME
512 to PFILE's token_buffer. */
515 dump_special_to_buffer (pfile, macro_name)
517 const char *macro_name;
519 static const char define_directive[] = "#define ";
520 int macro_name_length = strlen (macro_name);
521 output_line_command (pfile, same_file);
522 CPP_RESERVE (pfile, sizeof(define_directive) + macro_name_length);
523 CPP_PUTS_Q (pfile, define_directive, sizeof(define_directive)-1);
524 CPP_PUTS_Q (pfile, macro_name, macro_name_length);
525 CPP_PUTC_Q (pfile, ' ');
526 cpp_expand_to_buffer (pfile, macro_name, macro_name_length);
527 CPP_PUTC (pfile, '\n');
530 /* Initialize a cpp_options structure. */
532 cpp_options_init (opts)
535 memset ((char *) opts, 0, sizeof (struct cpp_options));
537 opts->dollars_in_ident = 1;
538 opts->cplusplus_comments = 1;
539 opts->warn_import = 1;
540 opts->discard_comments = 1;
543 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
546 /* Initialize a cpp_reader structure. */
548 cpp_reader_init (pfile)
551 memset ((char *) pfile, 0, sizeof (cpp_reader));
553 pfile->token_buffer_size = 200;
554 pfile->token_buffer = (U_CHAR *) xmalloc (pfile->token_buffer_size);
555 CPP_SET_WRITTEN (pfile, 0);
557 pfile->hashtab = (HASHNODE **) xcalloc (HASHSIZE, sizeof (HASHNODE *));
560 /* Free resources used by PFILE.
561 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
567 while (CPP_BUFFER (pfile) != NULL)
568 cpp_pop_buffer (pfile);
570 if (pfile->token_buffer)
572 free (pfile->token_buffer);
573 pfile->token_buffer = NULL;
576 if (pfile->input_buffer)
578 free (pfile->input_buffer);
579 free (pfile->input_speccase);
580 pfile->input_buffer = pfile->input_speccase = NULL;
581 pfile->input_buffer_len = 0;
585 deps_free (pfile->deps);
587 for (i = ALL_INCLUDE_HASHSIZE; --i >= 0; )
590 for (imp = pfile->all_include_files[i]; imp; imp = next)
593 free ((PTR) imp->name);
594 free ((PTR) imp->nshort);
597 pfile->all_include_files[i] = 0;
600 for (i = HASHSIZE; --i >= 0;)
602 while (pfile->hashtab[i])
603 _cpp_delete_macro (pfile->hashtab[i]);
605 free (pfile->hashtab);
609 /* This structure defines one built-in macro. A node of type TYPE will
610 be entered in the macro hash table under the name NAME, with value
611 VALUE (if any). FLAGS tweaks the behavior a little:
612 DUMP write debug info for this macro
613 STDC define only if not -traditional
614 ULP value is the global user_label_prefix (which can't be
615 put directly into the table).
623 unsigned short flags;
629 static const struct builtin builtin_array[] =
631 { "__TIME__", 0, T_TIME, DUMP },
632 { "__DATE__", 0, T_DATE, DUMP },
633 { "__FILE__", 0, T_FILE, 0 },
634 { "__BASE_FILE__", 0, T_BASE_FILE, 0 },
635 { "__LINE__", 0, T_SPECLINE, 0 },
636 { "__INCLUDE_LEVEL__", 0, T_INCLUDE_LEVEL, 0 },
637 { "__VERSION__", 0, T_VERSION, DUMP },
638 { "__STDC__", 0, T_STDC, DUMP|STDC },
640 { "__USER_LABEL_PREFIX__", 0, T_CONST, ULP },
641 { "__REGISTER_PREFIX__", REGISTER_PREFIX, T_CONST, 0 },
642 { "__HAVE_BUILTIN_SETJMP__", "1", T_CONST, 0 },
643 #ifndef NO_BUILTIN_SIZE_TYPE
644 { "__SIZE_TYPE__", SIZE_TYPE, T_CONST, DUMP },
646 #ifndef NO_BUILTIN_PTRDIFF_TYPE
647 { "__PTRDIFF_TYPE__", PTRDIFF_TYPE, T_CONST, DUMP },
649 #ifndef NO_BUILTIN_WCHAR_TYPE
650 { "__WCHAR_TYPE__", WCHAR_TYPE, T_CONST, DUMP },
655 /* Subroutine of cpp_start_read; reads the builtins table above and
656 enters the macros into the hash table. */
659 initialize_builtins (pfile)
663 const struct builtin *b;
665 for(b = builtin_array; b->name; b++)
667 if ((b->flags & STDC) && CPP_TRADITIONAL (pfile))
670 val = (b->flags & ULP) ? user_label_prefix : b->value;
671 len = strlen (b->name);
673 _cpp_install (pfile, b->name, len, b->type, val);
674 if ((b->flags & DUMP) && CPP_OPTIONS (pfile)->debug_output)
675 dump_special_to_buffer (pfile, b->name);
683 /* Another subroutine of cpp_start_read. This one sets up to do
684 dependency-file output. */
686 initialize_dependency_output (pfile)
689 cpp_options *opts = CPP_OPTIONS (pfile);
690 char *spec, *s, *output_file;
692 /* Either of two environment variables can specify output of deps.
693 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
694 where OUTPUT_FILE is the file to write deps info to
695 and DEPS_TARGET is the target to mention in the deps. */
697 if (opts->print_deps == 0)
699 spec = getenv ("DEPENDENCIES_OUTPUT");
701 opts->print_deps = 1;
704 spec = getenv ("SUNPRO_DEPENDENCIES");
706 opts->print_deps = 2;
711 /* Find the space before the DEPS_TARGET, if there is one. */
712 s = strchr (spec, ' ');
715 opts->deps_target = s + 1;
716 output_file = (char *) xmalloc (s - spec + 1);
717 memcpy (output_file, spec, s - spec);
718 output_file[s - spec] = 0;
722 opts->deps_target = 0;
726 opts->deps_file = output_file;
727 opts->print_deps_append = 1;
730 pfile->deps = deps_init ();
732 /* Print the expected object file name as the target of this Make-rule. */
733 if (opts->deps_target)
734 deps_add_target (pfile->deps, opts->deps_target);
735 else if (*opts->in_fname == 0)
736 deps_add_target (pfile->deps, "-");
738 deps_calc_target (pfile->deps, opts->in_fname);
741 deps_add_dep (pfile->deps, opts->in_fname);
744 /* And another subroutine. This one sets up the standard include path. */
746 initialize_standard_includes (pfile)
749 cpp_options *opts = CPP_OPTIONS (pfile);
751 const struct default_include *p;
752 const char *specd_prefix = opts->include_prefix;
754 /* Several environment variables may add to the include search path.
755 CPATH specifies an additional list of directories to be searched
756 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
757 etc. specify an additional list of directories to be searched as
758 if specified with -isystem, for the language indicated. */
760 GET_ENV_PATH_LIST (path, "CPATH");
761 if (path != 0 && *path != 0)
762 path_include (pfile, opts->pending, path, BRACKET);
764 switch ((opts->objc << 1) + opts->cplusplus)
767 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
770 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
773 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
776 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
779 if (path != 0 && *path != 0)
780 path_include (pfile, opts->pending, path, SYSTEM);
782 /* Search "translated" versions of GNU directories.
783 These have /usr/local/lib/gcc... replaced by specd_prefix. */
784 if (specd_prefix != 0)
786 char *default_prefix = alloca (sizeof GCC_INCLUDE_DIR - 7);
787 /* Remove the `include' from /usr/local/lib/gcc.../include.
788 GCC_INCLUDE_DIR will always end in /include. */
789 int default_len = sizeof GCC_INCLUDE_DIR - 8;
790 int specd_len = strlen (specd_prefix);
792 memcpy (default_prefix, GCC_INCLUDE_DIR, default_len);
793 default_prefix[default_len] = '\0';
795 for (p = include_defaults_array; p->fname; p++)
797 /* Some standard dirs are only for C++. */
800 && !opts->no_standard_cplusplus_includes))
802 /* Does this dir start with the prefix? */
803 if (!strncmp (p->fname, default_prefix, default_len))
805 /* Yes; change prefix and add to search list. */
806 int flen = strlen (p->fname);
807 int this_len = specd_len + flen - default_len;
808 char *str = (char *) xmalloc (this_len + 1);
809 memcpy (str, specd_prefix, specd_len);
810 memcpy (str + specd_len,
811 p->fname + default_len,
812 flen - default_len + 1);
814 append_include_chain (pfile, opts->pending,
815 str, SYSTEM, p->cxx_aware);
821 /* Search ordinary names for GNU include directories. */
822 for (p = include_defaults_array; p->fname; p++)
824 /* Some standard dirs are only for C++. */
827 && !opts->no_standard_cplusplus_includes))
829 /* XXX Potential memory leak! */
830 char *str = xstrdup (update_path (p->fname, p->component));
831 append_include_chain (pfile, opts->pending, str, SYSTEM,
837 /* This is called after options have been processed.
838 * Check options for consistency, and setup for processing input
839 * from the file named FNAME. (Use standard input if FNAME==NULL.)
840 * Return 1 on success, 0 on failure.
844 cpp_start_read (pfile, fname)
848 struct cpp_options *opts = CPP_OPTIONS (pfile);
849 struct pending_option *p, *q;
851 /* -MG doesn't select the form of output and must be specified with one of
852 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
853 inhibit compilation. */
854 if (opts->print_deps_missing_files
855 && (opts->print_deps == 0 || !opts->no_output))
857 cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
861 /* Chill should not be used with -trigraphs. */
862 if (opts->chill && opts->trigraphs)
864 cpp_warning (pfile, "-lang-chill and -trigraphs are mutually exclusive");
868 /* Set this if it hasn't been set already. */
869 if (user_label_prefix == NULL)
870 user_label_prefix = USER_LABEL_PREFIX;
872 /* Don't bother trying to do macro expansion if we've already done
874 if (opts->preprocessed)
875 pfile->no_macro_expand++;
877 /* Set up the IStable. This doesn't do anything if we were compiled
878 with a compiler that supports C99 designated initializers. */
881 /* Set up the include search path now. */
882 if (! opts->no_standard_includes)
883 initialize_standard_includes (pfile);
885 merge_include_chains (opts);
887 /* With -v, print the list of dirs to search. */
890 struct file_name_list *l;
891 fprintf (stderr, _("#include \"...\" search starts here:\n"));
892 for (l = opts->quote_include; l; l = l->next)
894 if (l == opts->bracket_include)
895 fprintf (stderr, _("#include <...> search starts here:\n"));
896 fprintf (stderr, " %s\n", l->name);
898 fprintf (stderr, _("End of search list.\n"));
901 initialize_dependency_output (pfile);
903 /* Open the main input file. This must be done before -D processing
904 so we have a buffer to stand on. */
905 if (opts->in_fname == NULL || *opts->in_fname == 0)
907 opts->in_fname = fname;
908 if (opts->in_fname == NULL)
912 if (!cpp_read_file (pfile, fname))
915 /* -D and friends may produce output, which should be identified
918 CPP_BUFFER (pfile)->lineno = 0;
920 /* Install __LINE__, etc. */
921 initialize_builtins (pfile);
923 /* Do -U's, -D's and -A's in the order they were seen. */
924 p = opts->pending->directive_head;
927 (*p->handler) (pfile, p->arg);
933 opts->done_initializing = 1;
934 CPP_BUFFER (pfile)->lineno = 1;
936 if (opts->preprocessed)
937 /* If we've already processed this code, we want to trust the #line
938 directives in the input. But we still need to update our line
939 counter accordingly. */
940 pfile->lineno = CPP_BUFFER (pfile)->lineno;
942 output_line_command (pfile, same_file);
943 pfile->only_seen_white = 2;
945 /* The -imacros files can be scanned now, but the -include files
946 have to be pushed onto the include stack and processed later,
947 in the main loop calling cpp_get_token. */
950 p = opts->pending->imacros_head;
953 if (cpp_read_file (pfile, p->arg))
954 cpp_scan_buffer (pfile);
962 p = opts->pending->include_head;
965 if (cpp_read_file (pfile, p->arg))
966 output_line_command (pfile, enter_file);
973 free (opts->pending);
974 opts->pending = NULL;
979 /* This is called at the end of preprocessing. It pops the
980 last buffer and writes dependency output. It should also
981 clear macro definitions, such that you could call cpp_start_read
982 with a new filename to restart processing. */
987 struct cpp_options *opts = CPP_OPTIONS (pfile);
989 if (CPP_PREV_BUFFER (CPP_BUFFER (pfile)))
990 cpp_ice (pfile, "buffers still stacked in cpp_finish");
991 while (CPP_BUFFER (pfile))
992 cpp_pop_buffer (pfile);
994 /* Don't write the deps file if preprocessing has failed. */
995 if (opts->print_deps && pfile->errors == 0)
997 /* Stream on which to print the dependency information. */
998 FILE *deps_stream = 0;
1000 const char *deps_mode = opts->print_deps_append ? "a" : "w";
1001 if (opts->deps_file == 0)
1002 deps_stream = stdout;
1003 else if ((deps_stream = fopen (opts->deps_file, deps_mode)) == 0)
1004 cpp_notice_from_errno (pfile, opts->deps_file);
1008 deps_write (pfile->deps, deps_stream, 72);
1009 if (opts->deps_file)
1011 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1012 cpp_fatal (pfile, "I/O error on output");
1017 if (opts->dump_macros == dump_only)
1021 for (i = HASHSIZE; --i >= 0;)
1023 for (h = pfile->hashtab[i]; h; h = h->next)
1024 if (h->type == T_MACRO)
1026 _cpp_dump_definition (pfile, h->name, h->length,
1028 CPP_PUTC (pfile, '\n');
1035 new_pending_directive (opts, text, handler)
1036 struct cpp_options *opts;
1038 cl_directive_handler handler;
1040 struct pending_option *o = (struct pending_option *)
1041 xmalloc (sizeof (struct pending_option));
1045 o->handler = handler;
1046 APPEND (opts->pending, directive, o);
1051 OPT_stdin_stdout = 0, OPT_dollar, OPT_plus,
1052 OPT__help, OPT__version,
1053 OPT_A, OPT_C, OPT_D, OPT_H, OPT_I, OPT_M,
1054 OPT_MD, OPT_MG, OPT_MM, OPT_MMD,
1055 OPT_P, OPT_U, OPT_W,
1057 OPT_fleading_underscore, OPT_fno_leading_underscore,
1058 OPT_fpreprocessed, OPT_fno_preprocessed,
1060 OPT_idirafter, OPT_imacros, OPT_include,
1061 OPT_iprefix, OPT_isystem, OPT_iwithprefix, OPT_iwithprefixbefore,
1062 OPT_lang_asm, OPT_lang_c, OPT_lang_cplusplus, OPT_lang_c89,
1063 OPT_lang_chill, OPT_lang_fortran, OPT_lang_objc, OPT_lang_objcplusplus,
1064 OPT_nostdinc, OPT_nostdincplusplus,
1066 OPT_pedantic, OPT_pedantic_errors, OPT_remap,
1067 OPT_std_c89, OPT_std_c99, OPT_std_c9x, OPT_std_gnu89, OPT_std_gnu99,
1068 OPT_std_gnu9x, OPT_std_iso9899_1990, OPT_std_iso9899_199409,
1069 OPT_std_iso9899_1999, OPT_std_iso9899_199x,
1070 OPT_traditional, OPT_trigraphs,
1077 const char *opt_text;
1080 enum opt_code opt_code;
1083 static const char no_arg[] = N_("Argument missing after `%s' option");
1084 static const char no_ass[] = N_("Assertion missing after `%s' option");
1085 static const char no_dir[] = N_("Directory name missing after `%s' option");
1086 static const char no_fil[] = N_("File name missing after `%s' option");
1087 static const char no_mac[] = N_("Macro name missing after `%s' option");
1088 static const char no_pth[] = N_("Path name missing after `%s' option");
1090 /* This list must be ASCII sorted. Make enum order above match this. */
1091 #define DEF_OPT(text, msg, code) {text, msg, sizeof(text) - 1, code}
1094 static struct cl_option cl_options[] =
1096 static const struct cl_option cl_options[] =
1099 DEF_OPT("", 0, OPT_stdin_stdout),
1100 DEF_OPT("$", 0, OPT_dollar),
1101 DEF_OPT("+", 0, OPT_plus),
1102 DEF_OPT("-help", 0, OPT__help),
1103 DEF_OPT("-version", 0, OPT__version),
1104 DEF_OPT("A", no_ass, OPT_A),
1105 DEF_OPT("C", 0, OPT_C),
1106 DEF_OPT("D", no_mac, OPT_D),
1107 DEF_OPT("H", 0, OPT_H),
1108 DEF_OPT("I", no_dir, OPT_I),
1109 DEF_OPT("M", 0, OPT_M),
1110 DEF_OPT("MD", no_fil, OPT_MD),
1111 DEF_OPT("MG", 0, OPT_MG),
1112 DEF_OPT("MM", 0, OPT_MM),
1113 DEF_OPT("MMD", no_fil, OPT_MMD),
1114 DEF_OPT("P", 0, OPT_P),
1115 DEF_OPT("U", no_mac, OPT_U),
1116 /* NB: Immed arg only, and not reqd */
1117 DEF_OPT("W", no_arg, OPT_W),
1118 DEF_OPT("d", no_arg, OPT_d),
1119 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore),
1120 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore),
1121 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed),
1122 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed),
1123 /* NB: Immed arg only, and not reqd */
1124 DEF_OPT("g", no_arg, OPT_g),
1125 DEF_OPT("h", 0, OPT_h),
1126 DEF_OPT("idirafter", no_dir, OPT_idirafter),
1127 DEF_OPT("imacros", no_fil, OPT_imacros),
1128 DEF_OPT("include", no_fil, OPT_include),
1129 DEF_OPT("iprefix", no_pth, OPT_iprefix),
1130 DEF_OPT("isystem", no_dir, OPT_isystem),
1131 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix),
1132 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore),
1133 DEF_OPT("lang-asm", 0, OPT_lang_asm),
1134 DEF_OPT("lang-c", 0, OPT_lang_c),
1135 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus),
1136 DEF_OPT("lang-c89", 0, OPT_lang_c89),
1137 DEF_OPT("lang-chill", 0, OPT_lang_chill),
1138 DEF_OPT("lang-fortran", 0, OPT_lang_fortran),
1139 DEF_OPT("lang-objc", 0, OPT_lang_objc),
1140 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus),
1141 DEF_OPT("nostdinc", 0, OPT_nostdinc),
1142 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus),
1143 DEF_OPT("o", no_fil, OPT_o),
1144 DEF_OPT("pedantic", 0, OPT_pedantic),
1145 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors),
1146 DEF_OPT("remap", 0, OPT_remap),
1147 DEF_OPT("std=c89", 0, OPT_std_c89),
1148 DEF_OPT("std=c99", 0, OPT_std_c99),
1149 DEF_OPT("std=c9x", 0, OPT_std_c9x),
1150 DEF_OPT("std=gnu89", 0, OPT_std_gnu89),
1151 DEF_OPT("std=gnu99", 0, OPT_std_gnu99),
1152 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x),
1153 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990),
1154 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409),
1155 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999),
1156 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x),
1157 DEF_OPT("traditional", 0, OPT_traditional),
1158 DEF_OPT("trigraphs", 0, OPT_trigraphs),
1159 DEF_OPT("v", 0, OPT_v),
1160 DEF_OPT("w", 0, OPT_w)
1164 /* Perform a binary search to find which, if any, option the given
1165 command-line matches. Returns its index in the option array,
1166 negative on failure. Complications arise since some options can be
1167 suffixed with an argument, and multiple complete matches can occur,
1168 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1169 accept options beginning with -g and -W that we do not recognise,
1170 but not to swallow any subsequent command line argument; these are
1171 handled as special cases in cpp_handle_option */
1173 parse_option (input)
1176 unsigned int md, mn, mx;
1187 opt_len = cl_options[md].opt_len;
1188 comp = strncmp (input, cl_options[md].opt_text, opt_len);
1196 if (input[opt_len] == '\0')
1198 /* We were passed more text. If the option takes an argument,
1199 we may match a later option or we may have been passed the
1200 argument. The longest possible option match succeeds.
1201 If the option takes no arguments we have not matched and
1202 continue the search (e.g. input="stdc++" match was "stdc") */
1204 if (cl_options[md].msg)
1206 /* Scan forwards. If we get an exact match, return it.
1207 Otherwise, return the longest option-accepting match.
1208 This loops no more than twice with current options */
1210 for (; mn < N_OPTS; mn++)
1212 opt_len = cl_options[mn].opt_len;
1213 if (strncmp (input, cl_options[mn].opt_text, opt_len))
1215 if (input[opt_len] == '\0')
1217 if (cl_options[mn].msg)
1228 /* Handle one command-line option in (argc, argv).
1229 Can be called multiple times, to handle multiple sets of options.
1230 Returns number of strings consumed. */
1233 handle_option (pfile, argc, argv)
1238 struct cpp_options *opts = CPP_OPTIONS (pfile);
1241 if (argv[i][0] != '-')
1243 if (opts->out_fname != NULL)
1246 cpp_fatal (pfile, "Too many arguments");
1248 else if (opts->in_fname != NULL)
1249 opts->out_fname = argv[i];
1251 opts->in_fname = argv[i];
1255 enum opt_code opt_code;
1257 const char *arg = 0;
1260 opt_index = parse_option (&argv[i][1]);
1264 opt_code = cl_options[opt_index].opt_code;
1265 if (cl_options[opt_index].msg)
1267 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1269 /* Yuk. Special case for -g and -W as they must not swallow
1270 up any following argument. If this becomes common, add
1271 another field to the cl_options table */
1272 if (arg[0] == '\0' && !(opt_code == OPT_g || opt_code == OPT_W))
1277 cpp_fatal (pfile, _(cl_options[opt_index].msg), argv[i - 1]);
1285 case N_OPTS: /* shut GCC up */
1287 case OPT_fleading_underscore:
1288 user_label_prefix = "_";
1290 case OPT_fno_leading_underscore:
1291 user_label_prefix = "";
1293 case OPT_fpreprocessed:
1294 opts->preprocessed = 1;
1296 case OPT_fno_preprocessed:
1297 opts->preprocessed = 0;
1300 opts->inhibit_warnings = 1;
1302 case OPT_g: /* Silently ignore anything but -g3 */
1303 if (!strcmp(&argv[i][2], "3"))
1304 opts->debug_output = 1;
1312 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1316 opts->discard_comments = 0;
1319 opts->no_line_commands = 1;
1321 case OPT_dollar: /* Don't include $ in identifiers. */
1322 opts->dollars_in_ident = 0;
1325 opts->print_include_names = 1;
1328 new_pending_directive (opts, arg, cpp_define);
1330 case OPT_pedantic_errors:
1331 opts->pedantic_errors = 1;
1336 case OPT_traditional:
1337 opts->traditional = 1;
1338 opts->cplusplus_comments = 0;
1339 opts->trigraphs = 0;
1340 opts->warn_trigraphs = 0;
1343 opts->trigraphs = 1;
1346 opts->cplusplus = 1;
1347 opts->cplusplus_comments = 1;
1353 opts->include_prefix = arg;
1354 opts->include_prefix_len = strlen (arg);
1357 opts->cplusplus = 0, opts->cplusplus_comments = 1;
1358 opts->c89 = 0, opts->c99 = 1, opts->objc = 0;
1361 opts->cplusplus = 0, opts->cplusplus_comments = 0;
1362 opts->c89 = 1, opts->c99 = 0, opts->objc = 0;
1363 opts->trigraphs = 1;
1364 new_pending_directive (opts, "__STRICT_ANSI__", cpp_define);
1366 case OPT_lang_cplusplus:
1367 opts->cplusplus = 1, opts->cplusplus_comments = 1;
1368 opts->c89 = 0, opts->c99 = 0, opts->objc = 0;
1371 case OPT_lang_objcplusplus:
1372 opts->cplusplus = opt_code == OPT_lang_objcplusplus;
1373 opts->cplusplus_comments = 1;
1374 opts->c89 = 0, opts->c99 = 0, opts->objc = 1;
1379 case OPT_lang_fortran:
1380 opts->lang_fortran = 1, opts->cplusplus_comments = 0;
1382 case OPT_lang_chill:
1383 opts->objc = 0, opts->cplusplus = 0;
1384 opts->chill = 1, opts->traditional = 1;
1387 /* -nostdinc causes no default include directories.
1388 You must specify all include-file directories with -I. */
1389 opts->no_standard_includes = 1;
1391 case OPT_nostdincplusplus:
1392 /* -nostdinc++ causes no default C++-specific include directories. */
1393 opts->no_standard_cplusplus_includes = 1;
1396 opts->cplusplus = 0, opts->cplusplus_comments = 1;
1397 opts->c89 = 1, opts->c99 = 0, opts->objc = 0;
1401 opts->cplusplus = 0, opts->cplusplus_comments = 1;
1402 opts->c89 = 0, opts->c99 = 1, opts->objc = 0;
1403 new_pending_directive (opts, "__STDC_VERSION__=199901L", cpp_define);
1405 case OPT_std_iso9899_199409:
1406 new_pending_directive (opts, "__STDC_VERSION__=199409L", cpp_define);
1408 case OPT_std_iso9899_1990:
1410 opts->cplusplus = 0, opts->cplusplus_comments = 0;
1411 opts->c89 = 1, opts->c99 = 0, opts->objc = 0;
1412 opts->trigraphs = 1;
1413 new_pending_directive (opts, "__STRICT_ANSI__", cpp_define);
1415 case OPT_std_iso9899_199x:
1416 case OPT_std_iso9899_1999:
1419 opts->cplusplus = 0, opts->cplusplus_comments = 1;
1420 opts->c89 = 0, opts->c99 = 1, opts->objc = 0;
1421 opts->trigraphs = 1;
1422 new_pending_directive (opts, "__STRICT_ANSI__", cpp_define);
1423 new_pending_directive (opts, "__STDC_VERSION__=199901L", cpp_define);
1426 if (opts->out_fname != NULL)
1428 cpp_fatal (pfile, "Output filename specified twice");
1431 opts->out_fname = arg;
1432 if (!strcmp (opts->out_fname, "-"))
1433 opts->out_fname = "";
1436 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1437 #ifdef TARGET_VERSION
1440 fputc ('\n', stderr);
1443 case OPT_stdin_stdout:
1444 /* JF handle '-' as file name meaning stdin or stdout */
1445 if (opts->in_fname == NULL)
1446 opts->in_fname = "";
1447 else if (opts->out_fname == NULL)
1448 opts->out_fname = "";
1451 /* Args to -d specify what parts of macros to dump.
1452 Silently ignore unrecognised options; they may
1453 be aimed at the compiler proper. */
1457 while ((c = *arg++) != '\0')
1461 opts->dump_macros = dump_only;
1462 opts->no_output = 1;
1465 opts->dump_macros = dump_names;
1468 opts->dump_macros = dump_definitions;
1471 opts->dump_includes = 1;
1476 /* The style of the choices here is a bit mixed.
1477 The chosen scheme is a hybrid of keeping all options in one string
1478 and specifying each option in a separate argument:
1479 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1480 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1481 -M[M][G][D file]. This is awkward to handle in specs, and is not
1483 /* ??? -MG must be specified in addition to one of -M or -MM.
1484 This can be relaxed in the future without breaking anything.
1485 The converse isn't true. */
1487 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1489 opts->print_deps_missing_files = 1;
1495 if (opt_code == OPT_M || opt_code == OPT_MD)
1496 opts->print_deps = 2;
1498 opts->print_deps = 1;
1500 /* For -MD and -MMD options, write deps on file named by next arg */
1501 /* For -M and -MM, write deps on standard output
1502 and suppress the usual output. */
1503 if (opt_code == OPT_MD || opt_code == OPT_MMD)
1504 opts->deps_file = arg;
1506 opts->no_output = 1;
1509 if (strcmp (arg, "-"))
1510 new_pending_directive (opts, arg, cpp_assert);
1513 /* -A- eliminates all predefined macros and assertions.
1514 Let's include also any that were specified earlier
1515 on the command line. That way we can get rid of any
1516 that were passed automatically in from GCC. */
1517 struct pending_option *o1, *o2;
1519 o1 = opts->pending->directive_head;
1526 opts->pending->directive_head = NULL;
1527 opts->pending->directive_tail = NULL;
1531 new_pending_directive (opts, arg, cpp_undef);
1533 case OPT_I: /* Add directory to path for includes. */
1534 if (!strcmp (arg, "-"))
1537 Use the preceding -I directories for #include "..."
1538 but not #include <...>.
1539 Don't search the directory of the present file
1540 for #include "...". (Note that -I. -I- is not the same as
1541 the default setup; -I. uses the compiler's working dir.) */
1542 if (! opts->ignore_srcdir)
1544 opts->ignore_srcdir = 1;
1545 opts->pending->quote_head = opts->pending->brack_head;
1546 opts->pending->quote_tail = opts->pending->brack_tail;
1547 opts->pending->brack_head = 0;
1548 opts->pending->brack_tail = 0;
1552 cpp_fatal (pfile, "-I- specified twice");
1557 append_include_chain (pfile, opts->pending,
1558 xstrdup (arg), BRACKET, 0);
1561 /* Add directory to beginning of system include path, as a system
1562 include directory. */
1563 append_include_chain (pfile, opts->pending,
1564 xstrdup (arg), SYSTEM, 0);
1568 struct pending_option *o = (struct pending_option *)
1569 xmalloc (sizeof (struct pending_option));
1572 /* This list has to be built in reverse order so that
1573 when cpp_start_read pushes all the -include files onto
1574 the buffer stack, they will be scanned in forward order. */
1575 o->next = opts->pending->include_head;
1576 opts->pending->include_head = o;
1581 struct pending_option *o = (struct pending_option *)
1582 xmalloc (sizeof (struct pending_option));
1586 APPEND (opts->pending, imacros, o);
1589 case OPT_iwithprefix:
1590 /* Add directory to end of path for includes,
1591 with the default prefix at the front of its name. */
1593 case OPT_iwithprefixbefore:
1594 /* Add directory to main path for includes,
1595 with the default prefix at the front of its name. */
1602 if (opts->include_prefix != 0)
1604 fname = xmalloc (opts->include_prefix_len + len + 1);
1605 memcpy (fname, opts->include_prefix, opts->include_prefix_len);
1606 memcpy (fname + opts->include_prefix_len, arg, len + 1);
1610 fname = xmalloc (sizeof GCC_INCLUDE_DIR - 8 + len);
1611 memcpy (fname, GCC_INCLUDE_DIR, sizeof GCC_INCLUDE_DIR - 9);
1612 memcpy (fname + sizeof GCC_INCLUDE_DIR - 9, arg, len + 1);
1615 append_include_chain (pfile, opts->pending, fname,
1616 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1620 /* Add directory to end of path for includes. */
1621 append_include_chain (pfile, opts->pending,
1622 xstrdup (arg), AFTER, 0);
1625 /* Silently ignore unrecognised options */
1626 if (!strcmp (argv[i], "-Wall"))
1628 opts->warn_trigraphs = 1;
1629 opts->warn_comments = 1;
1631 else if (!strcmp (argv[i], "-Wtraditional"))
1632 opts->warn_stringify = 1;
1633 else if (!strcmp (argv[i], "-Wtrigraphs"))
1634 opts->warn_trigraphs = 1;
1635 else if (!strcmp (argv[i], "-Wcomment"))
1636 opts->warn_comments = 1;
1637 else if (!strcmp (argv[i], "-Wcomments"))
1638 opts->warn_comments = 1;
1639 else if (!strcmp (argv[i], "-Wundef"))
1640 opts->warn_undef = 1;
1641 else if (!strcmp (argv[i], "-Wimport"))
1642 opts->warn_import = 1;
1643 else if (!strcmp (argv[i], "-Werror"))
1644 opts->warnings_are_errors = 1;
1645 else if (!strcmp (argv[i], "-Wno-traditional"))
1646 opts->warn_stringify = 0;
1647 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1648 opts->warn_trigraphs = 0;
1649 else if (!strcmp (argv[i], "-Wno-comment"))
1650 opts->warn_comments = 0;
1651 else if (!strcmp (argv[i], "-Wno-comments"))
1652 opts->warn_comments = 0;
1653 else if (!strcmp (argv[i], "-Wno-undef"))
1654 opts->warn_undef = 0;
1655 else if (!strcmp (argv[i], "-Wno-import"))
1656 opts->warn_import = 0;
1657 else if (!strcmp (argv[i], "-Wno-error"))
1658 opts->warnings_are_errors = 0;
1667 opt_comp (const void *p1, const void *p2)
1669 return strcmp (((struct cl_option *)p1)->opt_text,
1670 ((struct cl_option *)p2)->opt_text);
1674 /* Handle command-line options in (argc, argv).
1675 Can be called multiple times, to handle multiple sets of options.
1676 Returns if an unrecognized option is seen.
1677 Returns number of strings consumed. */
1679 cpp_handle_options (pfile, argc, argv)
1685 int strings_processed;
1688 static int opts_sorted = 0;
1693 /* For non-ASCII hosts, the array needs to be sorted at runtime */
1694 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
1698 for (i = 0; i < argc; i += strings_processed)
1700 strings_processed = handle_option (pfile, argc - i, argv + i);
1701 if (strings_processed == 0)
1710 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1713 -include <file> Include the contents of <file> before other files\n\
1714 -imacros <file> Accept definition of macros in <file>\n\
1715 -iprefix <path> Specify <path> as a prefix for next two options\n\
1716 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1717 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1718 -isystem <dir> Add <dir> to the start of the system include path\n\
1719 -idirafter <dir> Add <dir> to the end of the system include path\n\
1720 -I <dir> Add <dir> to the end of the main include path\n\
1721 -I- Fine-grained include path control; see info docs\n\
1722 -nostdinc Do not search system include directories\n\
1723 (dirs specified with -isystem will still be used)\n\
1724 -nostdinc++ Do not search system include directories for C++\n\
1725 -o <file> Put output into <file>\n\
1726 -pedantic Issue all warnings demanded by strict ANSI C\n\
1727 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1728 -traditional Follow K&R pre-processor behaviour\n\
1729 -trigraphs Support ANSI C trigraphs\n\
1730 -lang-c Assume that the input sources are in C\n\
1731 -lang-c89 Assume that the input sources are in C89\n\
1732 -lang-c++ Assume that the input sources are in C++\n\
1733 -lang-objc Assume that the input sources are in ObjectiveC\n\
1734 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1735 -lang-asm Assume that the input sources are in assembler\n\
1736 -lang-fortran Assume that the input sources are in Fortran\n\
1737 -lang-chill Assume that the input sources are in Chill\n\
1738 -std=<std name> Specify the conformance standard; one of:\n\
1739 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1740 iso9899:199409, iso9899:1999\n\
1741 -+ Allow parsing of C++ style features\n\
1742 -w Inhibit warning messages\n\
1743 -Wtrigraphs Warn if trigraphs are encountered\n\
1744 -Wno-trigraphs Do not warn about trigraphs\n\
1745 -Wcomment{s} Warn if one comment starts inside another\n\
1746 -Wno-comment{s} Do not warn about comments\n\
1747 -Wtraditional Warn if a macro argument is/would be turned into\n\
1748 a string if -traditional is specified\n\
1749 -Wno-traditional Do not warn about stringification\n\
1750 -Wundef Warn if an undefined macro is used by #if\n\
1751 -Wno-undef Do not warn about testing undefined macros\n\
1752 -Wimport Warn about the use of the #import directive\n\
1753 -Wno-import Do not warn about the use of #import\n\
1754 -Werror Treat all warnings as errors\n\
1755 -Wno-error Do not treat warnings as errors\n\
1756 -Wall Enable all preprocessor warnings\n\
1757 -M Generate make dependencies\n\
1758 -MM As -M, but ignore system header files\n\
1759 -MD As -M, but put output in a .d file\n\
1760 -MMD As -MD, but ignore system header files\n\
1761 -MG Treat missing header file as generated files\n\
1762 -g3 Include #define and #undef directives in the output\n\
1763 -D<macro> Define a <macro> with string '1' as its value\n\
1764 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1765 -A<question> (<answer>) Assert the <answer> to <question>\n\
1766 -U<macro> Undefine <macro> \n\
1767 -v Display the version number\n\
1768 -H Print the name of header files as they are used\n\
1769 -C Do not discard comments\n\
1770 -dM Display a list of macro definitions active at end\n\
1771 -dD Preserve macro definitions in output\n\
1772 -dN As -dD except that only the names are preserved\n\
1773 -dI Include #include directives in the output\n\
1774 -P Do not generate #line directives\n\
1775 -$ Do not allow '$' in identifiers\n\
1776 -remap Remap file names when including files.\n\
1777 --version Display version information\n\
1778 -h or --help Display this information\n\