2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000 Free Software Foundation, Inc.
4 Contributed by Per Bothner, 1994-95.
5 Based on CCCP program by Paul Rubin, June 1986
6 Adapted to ANSI C, Richard Stallman, Jan 1987
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 #include "cppdefault.h"
33 /* Predefined symbols, built-in macros, and the default include path. */
35 #ifndef GET_ENV_PATH_LIST
36 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
39 /* Windows does not natively support inodes, and neither does MSDOS.
40 Cygwin's emulation can generate non-unique inodes, so don't use it.
41 VMS has non-numeric inodes. */
43 #define INO_T_EQ(a, b) (!memcmp (&(a), &(b), sizeof (a)))
44 #elif (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
45 #define INO_T_EQ(a, b) 0
47 #define INO_T_EQ(a, b) ((a) == (b))
50 /* Internal structures and prototypes. */
52 /* A `struct pending_option' remembers one -D, -A, -U, -include, or -imacros
53 switch. There are four lists: one for -D and -U, one for -A, one
54 for -include, one for -imacros. `undef' is set for -U, clear for
55 -D, ignored for the others.
56 (Future: add an equivalent of -U for -A) */
58 typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
61 struct pending_option *next;
63 cl_directive_handler handler;
66 /* The `pending' structure accumulates all the options that are not
67 actually processed until we hit cpp_start_read. It consists of
68 several lists, one for each type of option. We keep both head and
69 tail pointers for quick insertion. */
72 struct pending_option *directive_head, *directive_tail;
74 struct file_name_list *quote_head, *quote_tail;
75 struct file_name_list *brack_head, *brack_tail;
76 struct file_name_list *systm_head, *systm_tail;
77 struct file_name_list *after_head, *after_tail;
79 struct pending_option *imacros_head, *imacros_tail;
80 struct pending_option *include_head, *include_tail;
84 #define APPEND(pend, list, elt) \
85 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
86 else (pend)->list##_tail->next = (elt); \
87 (pend)->list##_tail = (elt); \
90 #define APPEND(pend, list, elt) \
91 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
92 else (pend)->list/**/_tail->next = (elt); \
93 (pend)->list/**/_tail = (elt); \
97 static void print_help PARAMS ((void));
98 static void path_include PARAMS ((cpp_reader *,
101 static void initialize_builtins PARAMS ((cpp_reader *));
102 static void append_include_chain PARAMS ((cpp_reader *,
103 struct cpp_pending *,
105 static void merge_include_chains PARAMS ((cpp_reader *));
107 static void initialize_dependency_output PARAMS ((cpp_reader *));
108 static void initialize_standard_includes PARAMS ((cpp_reader *));
109 static void new_pending_directive PARAMS ((struct cpp_pending *,
111 cl_directive_handler));
113 static int opt_comp PARAMS ((const void *, const void *));
115 static int parse_option PARAMS ((const char *));
116 static int handle_option PARAMS ((cpp_reader *, int, 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 S(x) s(x, ISspace)
146 A('a') A('b') A('c') A('d') A('e') A('f') A('g') A('h') A('i')
147 A('j') A('k') A('l') A('m') A('n') A('o') A('p') A('q') A('r')
148 A('s') A('t') A('u') A('v') A('w') A('x') A('y') A('z')
150 A('A') A('B') A('C') A('D') A('E') A('F') A('G') A('H') A('I')
151 A('J') A('K') A('L') A('M') A('N') A('O') A('P') A('Q') A('R')
152 A('S') A('T') A('U') A('V') A('W') A('X') A('Y') A('Z')
154 N('1') N('2') N('3') N('4') N('5') N('6') N('7') N('8') N('9') N('0')
156 H('\0') H(' ') H('\t') H('\v') H('\f')
169 /* Given a colon-separated list of file names PATH,
170 add all the names to the search path for include files. */
173 path_include (pfile, pend, list, path)
175 struct cpp_pending *pend;
185 /* Find the end of this name. */
187 while (*q != 0 && *q != PATH_SEPARATOR) q++;
190 /* An empty name in the path stands for the current directory. */
191 name = (char *) xmalloc (2);
197 /* Otherwise use the directory that is named. */
198 name = (char *) xmalloc (q - p + 1);
199 memcpy (name, p, q - p);
203 append_include_chain (pfile, pend, name, path, 0);
205 /* Advance past this name. */
213 /* Append DIR to include path PATH. DIR must be permanently allocated
216 append_include_chain (pfile, pend, dir, path, cxx_aware)
218 struct cpp_pending *pend;
223 struct file_name_list *new;
227 _cpp_simplify_pathname (dir);
230 /* Dirs that don't exist are silently ignored. */
232 cpp_notice_from_errno (pfile, dir);
233 else if (CPP_OPTION (pfile, verbose))
234 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
238 if (!S_ISDIR (st.st_mode))
240 cpp_notice (pfile, "%s: Not a directory", dir);
245 if (len > pfile->max_include_len)
246 pfile->max_include_len = len;
248 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
251 new->ino = st.st_ino;
252 new->dev = st.st_dev;
254 new->sysp = cxx_aware ? 1 : 2;
257 new->name_map = NULL;
263 case QUOTE: APPEND (pend, quote, new); break;
264 case BRACKET: APPEND (pend, brack, new); break;
265 case SYSTEM: APPEND (pend, systm, new); break;
266 case AFTER: APPEND (pend, after, new); break;
270 /* Merge the four include chains together in the order quote, bracket,
271 system, after. Remove duplicate dirs (as determined by
272 INO_T_EQ()). The system_include and after_include chains are never
273 referred to again after this function; all access is through the
274 bracket_include path.
276 For the future: Check if the directory is empty (but
277 how?) and possibly preload the include hash. */
280 merge_include_chains (pfile)
283 struct file_name_list *prev, *cur, *other;
284 struct file_name_list *quote, *brack, *systm, *after;
285 struct file_name_list *qtail, *btail, *stail, *atail;
287 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
289 qtail = pend->quote_tail;
290 btail = pend->brack_tail;
291 stail = pend->systm_tail;
292 atail = pend->after_tail;
294 quote = pend->quote_head;
295 brack = pend->brack_head;
296 systm = pend->systm_head;
297 after = pend->after_head;
299 /* Paste together bracket, system, and after include chains. */
309 /* This is a bit tricky.
310 First we drop dupes from the quote-include list.
311 Then we drop dupes from the bracket-include list.
312 Finally, if qtail and brack are the same directory,
315 We can't just merge the lists and then uniquify them because
316 then we may lose directories from the <> search path that should
317 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
318 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
319 -Ibar -I- -Ifoo -Iquux.
321 Note that this algorithm is quadratic in the number of -I switches,
322 which is acceptable since there aren't usually that many of them. */
324 for (cur = quote, prev = NULL; cur; cur = cur->next)
326 for (other = quote; other != cur; other = other->next)
327 if (INO_T_EQ (cur->ino, other->ino)
328 && cur->dev == other->dev)
330 if (CPP_OPTION (pfile, verbose))
331 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"),
334 prev->next = cur->next;
344 for (cur = brack; cur; cur = cur->next)
346 for (other = brack; other != cur; other = other->next)
347 if (INO_T_EQ (cur->ino, other->ino)
348 && cur->dev == other->dev)
350 if (CPP_OPTION (pfile, verbose))
351 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"),
354 prev->next = cur->next;
365 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
369 if (CPP_OPTION (pfile, verbose))
370 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"),
380 while (cur->next != qtail)
383 if (CPP_OPTION (pfile, verbose))
384 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"),
397 CPP_OPTION (pfile, quote_include) = quote;
398 CPP_OPTION (pfile, bracket_include) = brack;
402 /* Initialize a cpp_reader structure. */
404 cpp_reader_init (pfile)
407 memset ((char *) pfile, 0, sizeof (cpp_reader));
409 pfile->token_buffer_size = 200;
410 pfile->token_buffer = (U_CHAR *) xmalloc (pfile->token_buffer_size);
411 CPP_SET_WRITTEN (pfile, 0);
413 CPP_OPTION (pfile, dollars_in_ident) = 1;
414 CPP_OPTION (pfile, cplusplus_comments) = 1;
415 CPP_OPTION (pfile, warn_import) = 1;
416 CPP_OPTION (pfile, warn_paste) = 1;
417 CPP_OPTION (pfile, discard_comments) = 1;
418 CPP_OPTION (pfile, show_column) = 1;
419 CPP_OPTION (pfile, tabstop) = 8;
421 CPP_OPTION (pfile, pending) =
422 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
424 _cpp_init_macros (pfile);
425 _cpp_init_stacks (pfile);
426 _cpp_init_includes (pfile);
429 /* Initialize a cpp_printer structure. As a side effect, open the
432 cpp_printer_init (pfile, print)
436 memset (print, '\0', sizeof (cpp_printer));
437 if (CPP_OPTION (pfile, out_fname) == NULL)
438 CPP_OPTION (pfile, out_fname) = "";
440 if (CPP_OPTION (pfile, out_fname)[0] == '\0')
441 print->outf = stdout;
444 print->outf = fopen (CPP_OPTION (pfile, out_fname), "w");
447 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
454 /* Free resources used by PFILE.
455 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
460 while (CPP_BUFFER (pfile) != NULL)
461 cpp_pop_buffer (pfile);
463 if (pfile->token_buffer)
465 free (pfile->token_buffer);
466 pfile->token_buffer = NULL;
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). Two values are not compile time constants, so we tag
485 them in the FLAGS field instead:
486 VERS value is the global version_string, quoted
487 ULP value is the global user_label_prefix
495 unsigned short flags;
501 #define B(n, t) { U n, 0, t, 0, sizeof n - 1 }
502 #define C(n, v) { U n, v, T_MACRO, 0, sizeof n - 1 }
503 #define X(n, f) { U n, 0, T_MACRO, f, sizeof n - 1 }
504 static const struct builtin builtin_array[] =
506 B("__TIME__", T_TIME),
507 B("__DATE__", T_DATE),
508 B("__FILE__", T_FILE),
509 B("__BASE_FILE__", T_BASE_FILE),
510 B("__LINE__", T_SPECLINE),
511 B("__INCLUDE_LEVEL__", T_INCLUDE_LEVEL),
512 B("__STDC__", T_STDC),
514 X("__VERSION__", VERS),
515 X("__USER_LABEL_PREFIX__", ULP),
516 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
517 C("__HAVE_BUILTIN_SETJMP__", "1"),
518 #ifndef NO_BUILTIN_SIZE_TYPE
519 C("__SIZE_TYPE__", SIZE_TYPE),
521 #ifndef NO_BUILTIN_PTRDIFF_TYPE
522 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
524 #ifndef NO_BUILTIN_WCHAR_TYPE
525 C("__WCHAR_TYPE__", WCHAR_TYPE),
531 #define builtin_array_end \
532 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
534 /* Subroutine of cpp_start_read; reads the builtins table above and
535 enters the macros into the hash table. */
537 initialize_builtins (pfile)
540 const struct builtin *b;
541 for(b = builtin_array; b < builtin_array_end; b++)
543 if (b->type == T_MACRO)
550 /* Allocate enough space for 'name="value"\0'. */
551 str = xmalloc (b->len + strlen (version_string) + 4);
552 sprintf (str, "%s=\"%s\"", b->name, version_string);
557 val = user_label_prefix;
561 /* Allocate enough space for "name=value\0". */
562 str = xmalloc (b->len + strlen (val) + 2);
563 sprintf(str, "%s=%s", b->name, val);
565 cpp_define (pfile, str);
571 if (b->type == T_STDC && CPP_TRADITIONAL (pfile))
574 hp = cpp_lookup (pfile, b->name, b->len);
581 #undef builtin_array_end
583 /* Another subroutine of cpp_start_read. This one sets up to do
584 dependency-file output. */
586 initialize_dependency_output (pfile)
589 char *spec, *s, *output_file;
591 /* Either of two environment variables can specify output of deps.
592 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
593 where OUTPUT_FILE is the file to write deps info to
594 and DEPS_TARGET is the target to mention in the deps. */
596 if (CPP_OPTION (pfile, print_deps) == 0)
598 spec = getenv ("DEPENDENCIES_OUTPUT");
600 CPP_OPTION (pfile, print_deps) = 1;
603 spec = getenv ("SUNPRO_DEPENDENCIES");
605 CPP_OPTION (pfile, print_deps) = 2;
610 /* Find the space before the DEPS_TARGET, if there is one. */
611 s = strchr (spec, ' ');
614 CPP_OPTION (pfile, deps_target) = s + 1;
615 output_file = (char *) xmalloc (s - spec + 1);
616 memcpy (output_file, spec, s - spec);
617 output_file[s - spec] = 0;
621 CPP_OPTION (pfile, deps_target) = 0;
625 CPP_OPTION (pfile, deps_file) = output_file;
626 CPP_OPTION (pfile, print_deps_append) = 1;
629 pfile->deps = deps_init ();
631 /* Print the expected object file name as the target of this Make-rule. */
632 if (CPP_OPTION (pfile, deps_target))
633 deps_add_target (pfile->deps, CPP_OPTION (pfile, deps_target));
634 else if (*CPP_OPTION (pfile, in_fname) == 0)
635 deps_add_target (pfile->deps, "-");
637 deps_calc_target (pfile->deps, CPP_OPTION (pfile, in_fname));
639 if (CPP_OPTION (pfile, in_fname))
640 deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
643 /* And another subroutine. This one sets up the standard include path. */
645 initialize_standard_includes (pfile)
649 const struct default_include *p;
650 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
652 /* Several environment variables may add to the include search path.
653 CPATH specifies an additional list of directories to be searched
654 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
655 etc. specify an additional list of directories to be searched as
656 if specified with -isystem, for the language indicated. */
658 GET_ENV_PATH_LIST (path, "CPATH");
659 if (path != 0 && *path != 0)
660 path_include (pfile, CPP_OPTION (pfile, pending), path, BRACKET);
662 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
665 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
668 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
671 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
674 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
677 if (path != 0 && *path != 0)
678 path_include (pfile, CPP_OPTION (pfile, pending), path, SYSTEM);
680 /* Search "translated" versions of GNU directories.
681 These have /usr/local/lib/gcc... replaced by specd_prefix. */
682 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
684 /* Remove the `include' from /usr/local/lib/gcc.../include.
685 GCC_INCLUDE_DIR will always end in /include. */
686 int default_len = cpp_GCC_INCLUDE_DIR_len;
687 char *default_prefix = (char *) alloca (default_len + 1);
688 int specd_len = strlen (specd_prefix);
690 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
691 default_prefix[default_len] = '\0';
693 for (p = cpp_include_defaults; p->fname; p++)
695 /* Some standard dirs are only for C++. */
697 || (CPP_OPTION (pfile, cplusplus)
698 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
700 /* Does this dir start with the prefix? */
701 if (!strncmp (p->fname, default_prefix, default_len))
703 /* Yes; change prefix and add to search list. */
704 int flen = strlen (p->fname);
705 int this_len = specd_len + flen - default_len;
706 char *str = (char *) xmalloc (this_len + 1);
707 memcpy (str, specd_prefix, specd_len);
708 memcpy (str + specd_len,
709 p->fname + default_len,
710 flen - default_len + 1);
712 append_include_chain (pfile, CPP_OPTION (pfile, pending),
713 str, SYSTEM, p->cxx_aware);
719 /* Search ordinary names for GNU include directories. */
720 for (p = cpp_include_defaults; p->fname; p++)
722 /* Some standard dirs are only for C++. */
724 || (CPP_OPTION (pfile, cplusplus)
725 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
727 /* XXX Potential memory leak! */
728 char *str = xstrdup (update_path (p->fname, p->component));
729 append_include_chain (pfile, CPP_OPTION (pfile, pending),
730 str, SYSTEM, p->cxx_aware);
735 /* This is called after options have been processed.
736 * Check options for consistency, and setup for processing input
737 * from the file named FNAME. (Use standard input if FNAME==NULL.)
738 * Return 1 on success, 0 on failure.
742 cpp_start_read (pfile, print, fname)
747 struct pending_option *p, *q;
749 /* -MG doesn't select the form of output and must be specified with one of
750 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
751 inhibit compilation. */
752 if (CPP_OPTION (pfile, print_deps_missing_files)
753 && (CPP_OPTION (pfile, print_deps) == 0
754 || !CPP_OPTION (pfile, no_output)))
756 cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
760 /* Chill should not be used with -trigraphs. */
761 if (CPP_OPTION (pfile, chill) && CPP_OPTION (pfile, trigraphs))
763 cpp_warning (pfile, "-lang-chill and -trigraphs are mutually exclusive");
764 CPP_OPTION (pfile, trigraphs) = 0;
767 /* -Wtraditional is not useful in C++ mode. */
768 if (CPP_OPTION (pfile, cplusplus))
769 CPP_OPTION (pfile, warn_traditional) = 0;
771 /* Do not warn about illegal token pasting if -traditional,
772 -lang-fortran, or -lang-asm. */
773 if (CPP_OPTION (pfile, traditional)
774 || CPP_OPTION (pfile, lang_fortran)
775 || CPP_OPTION (pfile, lang_asm))
776 CPP_OPTION (pfile, warn_paste) = 0;
778 /* Set this if it hasn't been set already. */
779 if (user_label_prefix == NULL)
780 user_label_prefix = USER_LABEL_PREFIX;
782 /* Figure out if we need to save function macro parameter spellings.
783 We don't use CPP_PEDANTIC() here because that depends on whether
784 or not the current file is a system header, and there is no
786 pfile->save_parameter_spellings =
787 CPP_OPTION (pfile, pedantic)
788 || CPP_OPTION (pfile, debug_output)
789 || CPP_OPTION (pfile, dump_macros) == dump_definitions
790 || CPP_OPTION (pfile, dump_macros) == dump_only;
792 /* Set up the IStable. This doesn't do anything if we were compiled
793 with a compiler that supports C99 designated initializers. */
796 /* Set up the tables used by read_and_prescan. */
797 _cpp_init_input_buffer (pfile);
799 /* Set up the include search path now. */
800 if (! CPP_OPTION (pfile, no_standard_includes))
801 initialize_standard_includes (pfile);
803 merge_include_chains (pfile);
805 /* With -v, print the list of dirs to search. */
806 if (CPP_OPTION (pfile, verbose))
808 struct file_name_list *l;
809 fprintf (stderr, _("#include \"...\" search starts here:\n"));
810 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
812 if (l == CPP_OPTION (pfile, bracket_include))
813 fprintf (stderr, _("#include <...> search starts here:\n"));
814 fprintf (stderr, " %s\n", l->name);
816 fprintf (stderr, _("End of search list.\n"));
819 /* Open the main input file. This must be done early, so we have a
820 buffer to stand on. */
821 if (CPP_OPTION (pfile, in_fname) == NULL
822 || *CPP_OPTION (pfile, in_fname) == 0)
824 CPP_OPTION (pfile, in_fname) = fname;
825 if (CPP_OPTION (pfile, in_fname) == NULL)
826 CPP_OPTION (pfile, in_fname) = "";
828 if (CPP_OPTION (pfile, out_fname) == NULL)
829 CPP_OPTION (pfile, out_fname) = "";
831 if (!cpp_read_file (pfile, fname))
834 initialize_dependency_output (pfile);
836 /* -D and friends may produce output, which should be identified
839 CPP_BUFFER (pfile)->lineno = 0;
842 print->last_fname = CPP_BUFFER (pfile)->nominal_fname;
843 print->last_id = pfile->include_depth;
844 print->written = CPP_WRITTEN (pfile);
848 /* Install __LINE__, etc. */
849 initialize_builtins (pfile);
851 /* Do -U's, -D's and -A's in the order they were seen. */
852 p = CPP_OPTION (pfile, pending)->directive_head;
855 (*p->handler) (pfile, p->arg);
860 pfile->done_initializing = 1;
862 /* Now flush any output recorded during initialization, and advance
863 to line 1 of the main input file. */
864 CPP_BUFFER (pfile)->lineno = 1;
866 if (print && ! CPP_OPTION (pfile, no_output))
867 cpp_output_tokens (pfile, print, 1);
869 /* The -imacros files can be scanned now, but the -include files
870 have to be pushed onto the include stack and processed later,
871 in the main loop calling cpp_get_token. */
873 p = CPP_OPTION (pfile, pending)->imacros_head;
876 if (cpp_read_file (pfile, p->arg))
877 cpp_scan_buffer_nooutput (pfile);
883 p = CPP_OPTION (pfile, pending)->include_head;
886 if (cpp_read_file (pfile, p->arg)
887 && print && ! CPP_OPTION (pfile, no_output))
888 cpp_output_tokens (pfile, print, 1); /* record entry to file */
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 if (CPP_OPTION (pfile, dump_macros) == dump_only)
943 _cpp_dump_macro_hash (pfile);
945 /* Flush any pending output. */
948 cpp_output_tokens (pfile, print, print->lineno);
949 if (ferror (print->outf) || fclose (print->outf))
950 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
953 /* Report on headers that could use multiple include guards. */
954 if (CPP_OPTION (pfile, print_include_names))
955 _cpp_report_missing_guards (pfile);
959 new_pending_directive (pend, text, handler)
960 struct cpp_pending *pend;
962 cl_directive_handler handler;
964 struct pending_option *o = (struct pending_option *)
965 xmalloc (sizeof (struct pending_option));
969 o->handler = handler;
970 APPEND (pend, directive, o);
973 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
974 I.e. a const string initializer with parens around it. That is
975 what N_("string") resolves to, so we make no_* be macros instead. */
976 #define no_arg N_("Argument missing after %s")
977 #define no_ass N_("Assertion missing after %s")
978 #define no_dir N_("Directory name missing after %s")
979 #define no_fil N_("File name missing after %s")
980 #define no_mac N_("Macro name missing after %s")
981 #define no_pth N_("Path name missing after %s")
982 #define no_num N_("Number missing after %s")
984 /* This is the list of all command line options, with the leading
985 "-" removed. It must be sorted in ASCII collating order. */
986 #define COMMAND_LINE_OPTIONS \
987 DEF_OPT("", 0, OPT_stdin_stdout) \
988 DEF_OPT("$", 0, OPT_dollar) \
989 DEF_OPT("+", 0, OPT_plus) \
990 DEF_OPT("-help", 0, OPT__help) \
991 DEF_OPT("-version", 0, OPT__version) \
992 DEF_OPT("A", no_ass, OPT_A) \
993 DEF_OPT("C", 0, OPT_C) \
994 DEF_OPT("D", no_mac, OPT_D) \
995 DEF_OPT("H", 0, OPT_H) \
996 DEF_OPT("I", no_dir, OPT_I) \
997 DEF_OPT("M", 0, OPT_M) \
998 DEF_OPT("MD", no_fil, OPT_MD) \
999 DEF_OPT("MG", 0, OPT_MG) \
1000 DEF_OPT("MM", 0, OPT_MM) \
1001 DEF_OPT("MMD", no_fil, OPT_MMD) \
1002 DEF_OPT("P", 0, OPT_P) \
1003 DEF_OPT("U", no_mac, OPT_U) \
1004 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1005 DEF_OPT("d", no_arg, OPT_d) \
1006 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1007 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1008 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1009 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1010 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1011 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1012 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1013 DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
1014 DEF_OPT("h", 0, OPT_h) \
1015 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1016 DEF_OPT("imacros", no_fil, OPT_imacros) \
1017 DEF_OPT("include", no_fil, OPT_include) \
1018 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1019 DEF_OPT("isystem", no_dir, OPT_isystem) \
1020 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1021 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1022 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1023 DEF_OPT("lang-c", 0, OPT_lang_c) \
1024 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1025 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1026 DEF_OPT("lang-chill", 0, OPT_lang_chill) \
1027 DEF_OPT("lang-fortran", 0, OPT_lang_fortran) \
1028 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1029 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1030 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1031 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1032 DEF_OPT("o", no_fil, OPT_o) \
1033 DEF_OPT("pedantic", 0, OPT_pedantic) \
1034 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1035 DEF_OPT("remap", 0, OPT_remap) \
1036 DEF_OPT("std=c89", 0, OPT_std_c89) \
1037 DEF_OPT("std=c99", 0, OPT_std_c99) \
1038 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1039 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1040 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1041 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1042 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1043 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1044 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1045 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1046 DEF_OPT("traditional", 0, OPT_traditional) \
1047 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1048 DEF_OPT("v", 0, OPT_v) \
1049 DEF_OPT("w", 0, OPT_w)
1051 #define DEF_OPT(text, msg, code) code,
1054 COMMAND_LINE_OPTIONS
1061 const char *opt_text;
1064 enum opt_code opt_code;
1067 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1069 static struct cl_option cl_options[] =
1071 static const struct cl_option cl_options[] =
1074 COMMAND_LINE_OPTIONS
1077 #undef COMMAND_LINE_OPTIONS
1079 /* Perform a binary search to find which, if any, option the given
1080 command-line matches. Returns its index in the option array,
1081 negative on failure. Complications arise since some options can be
1082 suffixed with an argument, and multiple complete matches can occur,
1083 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1084 accept options beginning with -g and -W that we do not recognise,
1085 but not to swallow any subsequent command line argument; these are
1086 handled as special cases in cpp_handle_option */
1088 parse_option (input)
1091 unsigned int md, mn, mx;
1102 opt_len = cl_options[md].opt_len;
1103 comp = strncmp (input, cl_options[md].opt_text, opt_len);
1111 if (input[opt_len] == '\0')
1113 /* We were passed more text. If the option takes an argument,
1114 we may match a later option or we may have been passed the
1115 argument. The longest possible option match succeeds.
1116 If the option takes no arguments we have not matched and
1117 continue the search (e.g. input="stdc++" match was "stdc") */
1119 if (cl_options[md].msg)
1121 /* Scan forwards. If we get an exact match, return it.
1122 Otherwise, return the longest option-accepting match.
1123 This loops no more than twice with current options */
1125 for (; mn < N_OPTS; mn++)
1127 opt_len = cl_options[mn].opt_len;
1128 if (strncmp (input, cl_options[mn].opt_text, opt_len))
1130 if (input[opt_len] == '\0')
1132 if (cl_options[mn].msg)
1143 /* Handle one command-line option in (argc, argv).
1144 Can be called multiple times, to handle multiple sets of options.
1145 Returns number of strings consumed. */
1148 handle_option (pfile, argc, argv)
1154 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1156 if (argv[i][0] != '-')
1158 if (CPP_OPTION (pfile, out_fname) != NULL)
1159 cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
1161 else if (CPP_OPTION (pfile, in_fname) != NULL)
1162 CPP_OPTION (pfile, out_fname) = argv[i];
1164 CPP_OPTION (pfile, in_fname) = argv[i];
1168 enum opt_code opt_code;
1170 const char *arg = 0;
1173 opt_index = parse_option (&argv[i][1]);
1177 opt_code = cl_options[opt_index].opt_code;
1178 if (cl_options[opt_index].msg)
1180 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1182 /* Yuk. Special case for -g and -W as they must not swallow
1183 up any following argument. If this becomes common, add
1184 another field to the cl_options table */
1185 if (arg[0] == '\0' && !(opt_code == OPT_g || opt_code == OPT_W))
1190 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1198 case N_OPTS: /* shut GCC up */
1200 case OPT_fleading_underscore:
1201 user_label_prefix = "_";
1203 case OPT_fno_leading_underscore:
1204 user_label_prefix = "";
1206 case OPT_fpreprocessed:
1207 CPP_OPTION (pfile, preprocessed) = 1;
1209 case OPT_fno_preprocessed:
1210 CPP_OPTION (pfile, preprocessed) = 0;
1212 case OPT_fshow_column:
1213 CPP_OPTION (pfile, show_column) = 1;
1215 case OPT_fno_show_column:
1216 CPP_OPTION (pfile, show_column) = 0;
1219 /* Silently ignore empty string, non-longs and silly values. */
1223 long tabstop = strtol (arg, &endptr, 10);
1224 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1225 CPP_OPTION (pfile, tabstop) = tabstop;
1229 CPP_OPTION (pfile, inhibit_warnings) = 1;
1231 case OPT_g: /* Silently ignore anything but -g3 */
1232 if (!strcmp(&argv[i][2], "3"))
1233 CPP_OPTION (pfile, debug_output) = 1;
1241 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1245 CPP_OPTION (pfile, discard_comments) = 0;
1248 CPP_OPTION (pfile, no_line_commands) = 1;
1250 case OPT_dollar: /* Don't include $ in identifiers. */
1251 CPP_OPTION (pfile, dollars_in_ident) = 0;
1254 CPP_OPTION (pfile, print_include_names) = 1;
1257 new_pending_directive (pend, arg, cpp_define);
1259 case OPT_pedantic_errors:
1260 CPP_OPTION (pfile, pedantic_errors) = 1;
1263 CPP_OPTION (pfile, pedantic) = 1;
1265 case OPT_traditional:
1266 CPP_OPTION (pfile, traditional) = 1;
1267 CPP_OPTION (pfile, cplusplus_comments) = 0;
1268 CPP_OPTION (pfile, trigraphs) = 0;
1269 CPP_OPTION (pfile, warn_trigraphs) = 0;
1272 CPP_OPTION (pfile, trigraphs) = 1;
1275 CPP_OPTION (pfile, cplusplus) = 1;
1276 CPP_OPTION (pfile, cplusplus_comments) = 1;
1279 CPP_OPTION (pfile, remap) = 1;
1282 CPP_OPTION (pfile, include_prefix) = arg;
1283 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1286 CPP_OPTION (pfile, cplusplus) = 0;
1287 CPP_OPTION (pfile, cplusplus_comments) = 1;
1288 CPP_OPTION (pfile, c89) = 0;
1289 CPP_OPTION (pfile, c99) = 1;
1290 CPP_OPTION (pfile, objc) = 0;
1293 CPP_OPTION (pfile, cplusplus) = 0;
1294 CPP_OPTION (pfile, cplusplus_comments) = 0;
1295 CPP_OPTION (pfile, c89) = 1;
1296 CPP_OPTION (pfile, c99) = 0;
1297 CPP_OPTION (pfile, objc) = 0;
1298 CPP_OPTION (pfile, trigraphs) = 1;
1299 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
1301 case OPT_lang_cplusplus:
1302 CPP_OPTION (pfile, cplusplus) = 1;
1303 CPP_OPTION (pfile, cplusplus_comments) = 1;
1304 CPP_OPTION (pfile, c89) = 0;
1305 CPP_OPTION (pfile, c99) = 0;
1306 CPP_OPTION (pfile, objc) = 0;
1307 new_pending_directive (pend, "__cplusplus", cpp_define);
1309 case OPT_lang_objcplusplus:
1310 CPP_OPTION (pfile, cplusplus) = 1;
1311 new_pending_directive (pend, "__cplusplus", cpp_define);
1314 CPP_OPTION (pfile, cplusplus_comments) = 1;
1315 CPP_OPTION (pfile, c89) = 0;
1316 CPP_OPTION (pfile, c99) = 0;
1317 CPP_OPTION (pfile, objc) = 1;
1318 new_pending_directive (pend, "__OBJC__", cpp_define);
1321 CPP_OPTION (pfile, lang_asm) = 1;
1322 CPP_OPTION (pfile, dollars_in_ident) = 0;
1323 new_pending_directive (pend, "__ASSEMBLER__", cpp_define);
1325 case OPT_lang_fortran:
1326 CPP_OPTION (pfile, lang_fortran) = 1;
1327 CPP_OPTION (pfile, traditional) = 1;
1328 CPP_OPTION (pfile, cplusplus_comments) = 0;
1329 new_pending_directive (pend, "_LANGUAGE_FORTRAN", cpp_define);
1331 case OPT_lang_chill:
1332 CPP_OPTION (pfile, objc) = 0;
1333 CPP_OPTION (pfile, cplusplus) = 0;
1334 CPP_OPTION (pfile, chill) = 1;
1335 CPP_OPTION (pfile, traditional) = 1;
1338 /* -nostdinc causes no default include directories.
1339 You must specify all include-file directories with -I. */
1340 CPP_OPTION (pfile, no_standard_includes) = 1;
1342 case OPT_nostdincplusplus:
1343 /* -nostdinc++ causes no default C++-specific include directories. */
1344 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1347 CPP_OPTION (pfile, cplusplus) = 0;
1348 CPP_OPTION (pfile, cplusplus_comments) = 1;
1349 CPP_OPTION (pfile, c89) = 1;
1350 CPP_OPTION (pfile, c99) = 0;
1351 CPP_OPTION (pfile, objc) = 0;
1355 CPP_OPTION (pfile, cplusplus) = 0;
1356 CPP_OPTION (pfile, cplusplus_comments) = 1;
1357 CPP_OPTION (pfile, c89) = 0;
1358 CPP_OPTION (pfile, c99) = 1;
1359 CPP_OPTION (pfile, objc) = 0;
1360 new_pending_directive (CPP_OPTION (pfile, pending),
1361 "__STDC_VERSION__=199901L", cpp_define);
1363 case OPT_std_iso9899_199409:
1364 new_pending_directive (CPP_OPTION (pfile, pending),
1365 "__STDC_VERSION__=199409L", cpp_define);
1367 case OPT_std_iso9899_1990:
1369 CPP_OPTION (pfile, cplusplus) = 0;
1370 CPP_OPTION (pfile, cplusplus_comments) = 0;
1371 CPP_OPTION (pfile, c89) = 1;
1372 CPP_OPTION (pfile, c99) = 0;
1373 CPP_OPTION (pfile, objc) = 0;
1374 CPP_OPTION (pfile, trigraphs) = 1;
1375 new_pending_directive (CPP_OPTION (pfile, pending),
1376 "__STRICT_ANSI__", cpp_define);
1378 case OPT_std_iso9899_199x:
1379 case OPT_std_iso9899_1999:
1382 CPP_OPTION (pfile, cplusplus) = 0;
1383 CPP_OPTION (pfile, cplusplus_comments) = 1;
1384 CPP_OPTION (pfile, c89) = 0;
1385 CPP_OPTION (pfile, c99) = 1;
1386 CPP_OPTION (pfile, objc) = 0;
1387 CPP_OPTION (pfile, trigraphs) = 1;
1388 new_pending_directive (CPP_OPTION (pfile, pending),
1389 "__STRICT_ANSI__", cpp_define);
1390 new_pending_directive (CPP_OPTION (pfile, pending),
1391 "__STDC_VERSION__=199901L", cpp_define);
1394 if (CPP_OPTION (pfile, out_fname) != NULL)
1396 cpp_fatal (pfile, "Output filename specified twice");
1399 CPP_OPTION (pfile, out_fname) = arg;
1400 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1401 CPP_OPTION (pfile, out_fname) = "";
1404 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1405 #ifdef TARGET_VERSION
1408 fputc ('\n', stderr);
1409 CPP_OPTION (pfile, verbose) = 1;
1411 case OPT_stdin_stdout:
1412 /* JF handle '-' as file name meaning stdin or stdout */
1413 if (CPP_OPTION (pfile, in_fname) == NULL)
1414 CPP_OPTION (pfile, in_fname) = "";
1415 else if (CPP_OPTION (pfile, out_fname) == NULL)
1416 CPP_OPTION (pfile, out_fname) = "";
1419 /* Args to -d specify what parts of macros to dump.
1420 Silently ignore unrecognised options; they may
1421 be aimed at the compiler proper. */
1425 while ((c = *arg++) != '\0')
1429 CPP_OPTION (pfile, dump_macros) = dump_only;
1430 CPP_OPTION (pfile, no_output) = 1;
1433 CPP_OPTION (pfile, dump_macros) = dump_names;
1436 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1439 CPP_OPTION (pfile, dump_includes) = 1;
1444 /* The style of the choices here is a bit mixed.
1445 The chosen scheme is a hybrid of keeping all options in one string
1446 and specifying each option in a separate argument:
1447 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1448 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1449 -M[M][G][D file]. This is awkward to handle in specs, and is not
1451 /* ??? -MG must be specified in addition to one of -M or -MM.
1452 This can be relaxed in the future without breaking anything.
1453 The converse isn't true. */
1455 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1457 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1463 if (opt_code == OPT_M || opt_code == OPT_MD)
1464 CPP_OPTION (pfile, print_deps) = 2;
1466 CPP_OPTION (pfile, print_deps) = 1;
1468 /* For -MD and -MMD options, write deps on file named by next arg */
1469 /* For -M and -MM, write deps on standard output
1470 and suppress the usual output. */
1471 if (opt_code == OPT_MD || opt_code == OPT_MMD)
1472 CPP_OPTION (pfile, deps_file) = arg;
1474 CPP_OPTION (pfile, no_output) = 1;
1479 /* -A with an argument beginning with '-' acts as
1480 #unassert on whatever immediately follows the '-'.
1481 If "-" is the whole argument, we eliminate all
1482 predefined macros and assertions, including those
1483 that were specified earlier on the command line.
1484 That way we can get rid of any that were passed
1485 automatically in from GCC. */
1489 struct pending_option *o1, *o2;
1491 o1 = CPP_OPTION (pfile, pending)->directive_head;
1498 CPP_OPTION (pfile, pending)->directive_head = NULL;
1499 CPP_OPTION (pfile, pending)->directive_tail = NULL;
1502 new_pending_directive (CPP_OPTION (pfile, pending),
1503 arg + 1, cpp_unassert);
1506 new_pending_directive (CPP_OPTION (pfile, pending),
1510 new_pending_directive (CPP_OPTION (pfile, pending), arg, cpp_undef);
1512 case OPT_I: /* Add directory to path for includes. */
1513 if (!strcmp (arg, "-"))
1516 Use the preceding -I directories for #include "..."
1517 but not #include <...>.
1518 Don't search the directory of the present file
1519 for #include "...". (Note that -I. -I- is not the same as
1520 the default setup; -I. uses the compiler's working dir.) */
1521 if (! CPP_OPTION (pfile, ignore_srcdir))
1523 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1524 pend->quote_head = pend->brack_head;
1525 pend->quote_tail = pend->brack_tail;
1526 pend->brack_head = 0;
1527 pend->brack_tail = 0;
1528 CPP_OPTION (pfile, ignore_srcdir) = 1;
1532 cpp_fatal (pfile, "-I- specified twice");
1537 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1538 xstrdup (arg), BRACKET, 0);
1541 /* Add directory to beginning of system include path, as a system
1542 include directory. */
1543 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1544 xstrdup (arg), SYSTEM, 0);
1548 struct pending_option *o = (struct pending_option *)
1549 xmalloc (sizeof (struct pending_option));
1552 /* This list has to be built in reverse order so that
1553 when cpp_start_read pushes all the -include files onto
1554 the buffer stack, they will be scanned in forward order. */
1555 o->next = CPP_OPTION (pfile, pending)->include_head;
1556 CPP_OPTION (pfile, pending)->include_head = o;
1561 struct pending_option *o = (struct pending_option *)
1562 xmalloc (sizeof (struct pending_option));
1566 APPEND (CPP_OPTION (pfile, pending), imacros, o);
1569 case OPT_iwithprefix:
1570 /* Add directory to end of path for includes,
1571 with the default prefix at the front of its name. */
1573 case OPT_iwithprefixbefore:
1574 /* Add directory to main path for includes,
1575 with the default prefix at the front of its name. */
1582 if (CPP_OPTION (pfile, include_prefix) != 0)
1584 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1585 fname = xmalloc (ipl + len + 1);
1586 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1587 memcpy (fname + ipl, arg, len + 1);
1589 else if (cpp_GCC_INCLUDE_DIR_len)
1591 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1592 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1593 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1596 fname = xstrdup (arg);
1598 append_include_chain (pfile, CPP_OPTION (pfile, pending), fname,
1599 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1603 /* Add directory to end of path for includes. */
1604 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1605 xstrdup (arg), AFTER, 0);
1608 /* Silently ignore unrecognised options */
1609 if (!strcmp (argv[i], "-Wall"))
1611 CPP_OPTION (pfile, warn_trigraphs) = 1;
1612 CPP_OPTION (pfile, warn_comments) = 1;
1614 else if (!strcmp (argv[i], "-Wtraditional"))
1615 CPP_OPTION (pfile, warn_traditional) = 1;
1616 else if (!strcmp (argv[i], "-Wtrigraphs"))
1617 CPP_OPTION (pfile, warn_trigraphs) = 1;
1618 else if (!strcmp (argv[i], "-Wcomment"))
1619 CPP_OPTION (pfile, warn_comments) = 1;
1620 else if (!strcmp (argv[i], "-Wcomments"))
1621 CPP_OPTION (pfile, warn_comments) = 1;
1622 else if (!strcmp (argv[i], "-Wundef"))
1623 CPP_OPTION (pfile, warn_undef) = 1;
1624 else if (!strcmp (argv[i], "-Wimport"))
1625 CPP_OPTION (pfile, warn_import) = 1;
1626 else if (!strcmp (argv[i], "-Wpaste"))
1627 CPP_OPTION (pfile, warn_paste) = 1;
1628 else if (!strcmp (argv[i], "-Werror"))
1629 CPP_OPTION (pfile, warnings_are_errors) = 1;
1630 else if (!strcmp (argv[i], "-Wno-traditional"))
1631 CPP_OPTION (pfile, warn_traditional) = 0;
1632 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1633 CPP_OPTION (pfile, warn_trigraphs) = 0;
1634 else if (!strcmp (argv[i], "-Wno-comment"))
1635 CPP_OPTION (pfile, warn_comments) = 0;
1636 else if (!strcmp (argv[i], "-Wno-comments"))
1637 CPP_OPTION (pfile, warn_comments) = 0;
1638 else if (!strcmp (argv[i], "-Wno-undef"))
1639 CPP_OPTION (pfile, warn_undef) = 0;
1640 else if (!strcmp (argv[i], "-Wno-import"))
1641 CPP_OPTION (pfile, warn_import) = 0;
1642 else if (!strcmp (argv[i], "-Wno-paste"))
1643 CPP_OPTION (pfile, warn_paste) = 0;
1644 else if (!strcmp (argv[i], "-Wno-error"))
1645 CPP_OPTION (pfile, warnings_are_errors) = 0;
1654 opt_comp (const void *p1, const void *p2)
1656 return strcmp (((struct cl_option *)p1)->opt_text,
1657 ((struct cl_option *)p2)->opt_text);
1661 /* Handle command-line options in (argc, argv).
1662 Can be called multiple times, to handle multiple sets of options.
1663 Returns if an unrecognized option is seen.
1664 Returns number of strings consumed. */
1666 cpp_handle_options (pfile, argc, argv)
1672 int strings_processed;
1675 static int opts_sorted = 0;
1680 /* For non-ASCII hosts, the array needs to be sorted at runtime */
1681 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
1685 for (i = 0; i < argc; i += strings_processed)
1687 strings_processed = handle_option (pfile, argc - i, argv + i);
1688 if (strings_processed == 0)
1697 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1698 /* To keep the lines from getting too long for some compilers, limit
1699 to about 500 characters (6 lines) per chunk. */
1702 -include <file> Include the contents of <file> before other files\n\
1703 -imacros <file> Accept definition of macros in <file>\n\
1704 -iprefix <path> Specify <path> as a prefix for next two options\n\
1705 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1706 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1707 -isystem <dir> Add <dir> to the start of the system include path\n\
1710 -idirafter <dir> Add <dir> to the end of the system include path\n\
1711 -I <dir> Add <dir> to the end of the main include path\n\
1712 -I- Fine-grained include path control; see info docs\n\
1713 -nostdinc Do not search system include directories\n\
1714 (dirs specified with -isystem will still be used)\n\
1715 -nostdinc++ Do not search system include directories for C++\n\
1716 -o <file> Put output into <file>\n\
1719 -pedantic Issue all warnings demanded by strict ISO C\n\
1720 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1721 -traditional Follow K&R pre-processor behaviour\n\
1722 -trigraphs Support ISO C trigraphs\n\
1723 -lang-c Assume that the input sources are in C\n\
1724 -lang-c89 Assume that the input sources are in C89\n\
1725 -lang-c++ Assume that the input sources are in C++\n\
1728 -lang-objc Assume that the input sources are in ObjectiveC\n\
1729 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1730 -lang-asm Assume that the input sources are in assembler\n\
1731 -lang-fortran Assume that the input sources are in Fortran\n\
1732 -lang-chill Assume that the input sources are in Chill\n\
1735 -std=<std name> Specify the conformance standard; one of:\n\
1736 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1737 iso9899:199409, iso9899:1999\n\
1738 -+ Allow parsing of C++ style features\n\
1739 -w Inhibit warning messages\n\
1740 -Wtrigraphs Warn if trigraphs are encountered\n\
1741 -Wno-trigraphs Do not warn about trigraphs\n\
1742 -Wcomment{s} Warn if one comment starts inside another\n\
1745 -Wno-comment{s} Do not warn about comments\n\
1746 -Wtraditional Warn if a macro argument is/would be turned into\n\
1747 a string if -traditional is specified\n\
1748 -Wno-traditional Do not warn about stringification\n\
1749 -Wundef Warn if an undefined macro is used by #if\n\
1750 -Wno-undef Do not warn about testing undefined macros\n\
1751 -Wimport Warn about the use of the #import directive\n\
1754 -Wno-import Do not warn about the use of #import\n\
1755 -Werror Treat all warnings as errors\n\
1756 -Wno-error Do not treat warnings as errors\n\
1757 -Wall Enable all preprocessor warnings\n\
1758 -M Generate make dependencies\n\
1759 -MM As -M, but ignore system header files\n\
1762 -MD As -M, but put output in a .d file\n\
1763 -MMD As -MD, but ignore system header files\n\
1764 -MG Treat missing header file as generated files\n\
1765 -g3 Include #define and #undef directives in the output\n\
1766 -D<macro> Define a <macro> with string '1' as its value\n\
1767 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1770 -A<question> (<answer>) Assert the <answer> to <question>\n\
1771 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1772 -U<macro> Undefine <macro> \n\
1773 -v Display the version number\n\
1774 -H Print the name of header files as they are used\n\
1775 -C Do not discard comments\n\
1778 -dM Display a list of macro definitions active at end\n\
1779 -dD Preserve macro definitions in output\n\
1780 -dN As -dD except that only the names are preserved\n\
1781 -dI Include #include directives in the output\n\
1782 -ftabstop=<number> Distance between tab stops for column reporting\n\
1783 -P Do not generate #line directives\n\
1784 -$ Do not allow '$' in identifiers\n\
1787 -remap Remap file names when including files.\n\
1788 --version Display version information\n\
1789 -h or --help Display this information\n\