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) PARAMS ((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 ((cpp_reader *));
217 static void dump_special_to_buffer PARAMS ((cpp_reader *, const U_CHAR *,
219 static void initialize_dependency_output PARAMS ((cpp_reader *));
220 static void initialize_standard_includes PARAMS ((cpp_reader *));
221 static void new_pending_directive PARAMS ((struct cpp_pending *,
223 cl_directive_handler));
225 static int opt_comp PARAMS ((const void *, const void *));
227 static int parse_option PARAMS ((const char *));
228 static int handle_option PARAMS ((cpp_reader *, int, char **));
230 /* Fourth argument to append_include_chain: chain to use */
231 enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };
233 /* If we have designated initializers (GCC >2.7) this table can be
234 initialized, constant data. Otherwise, it has to be filled in at
237 #if (GCC_VERSION >= 2007)
238 #define init_IStable() /* nothing */
239 #define ISTABLE __extension__ const unsigned char _cpp_IStable[256] = {
241 #define s(p, v) [p] = v,
243 #define ISTABLE unsigned char _cpp_IStable[256] = { 0 }; \
244 static void init_IStable PARAMS ((void)) { \
245 unsigned char *x = _cpp_IStable;
247 #define s(p, v) x[p] = v;
250 #define A(x) s(x, ISidnum|ISidstart)
251 #define N(x) s(x, ISidnum|ISnumstart)
252 #define H(x) s(x, IShspace|ISspace)
253 #define S(x) s(x, ISspace)
258 A('a') A('b') A('c') A('d') A('e') A('f') A('g') A('h') A('i')
259 A('j') A('k') A('l') A('m') A('n') A('o') A('p') A('q') A('r')
260 A('s') A('t') A('u') A('v') A('w') A('x') A('y') A('z')
262 A('A') A('B') A('C') A('D') A('E') A('F') A('G') A('H') A('I')
263 A('J') A('K') A('L') A('M') A('N') A('O') A('P') A('Q') A('R')
264 A('S') A('T') A('U') A('V') A('W') A('X') A('Y') A('Z')
266 N('1') N('2') N('3') N('4') N('5') N('6') N('7') N('8') N('9') N('0')
268 H('\0') H(' ') H('\t') H('\v') H('\f')
281 /* Given a colon-separated list of file names PATH,
282 add all the names to the search path for include files. */
285 path_include (pfile, pend, list, path)
287 struct cpp_pending *pend;
297 /* Find the end of this name. */
299 while (*q != 0 && *q != PATH_SEPARATOR) q++;
302 /* An empty name in the path stands for the current directory. */
303 name = (char *) xmalloc (2);
309 /* Otherwise use the directory that is named. */
310 name = (char *) xmalloc (q - p + 1);
311 memcpy (name, p, q - p);
315 append_include_chain (pfile, pend, name, path, 0);
317 /* Advance past this name. */
325 /* Append DIR to include path PATH. DIR must be permanently allocated
328 append_include_chain (pfile, pend, dir, path, cxx_aware)
330 struct cpp_pending *pend;
335 struct file_name_list *new;
339 _cpp_simplify_pathname (dir);
342 /* Dirs that don't exist are silently ignored. */
344 cpp_notice_from_errno (pfile, dir);
345 else if (CPP_OPTION (pfile, verbose))
346 fprintf (stderr, _("ignoring nonexistent directory `%s'\n"), dir);
350 if (!S_ISDIR (st.st_mode))
352 cpp_notice (pfile, "%s: Not a directory", dir);
357 if (len > pfile->max_include_len)
358 pfile->max_include_len = len;
360 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
363 new->ino = st.st_ino;
364 new->dev = st.st_dev;
366 new->sysp = cxx_aware ? 1 : 2;
369 new->name_map = NULL;
375 case QUOTE: APPEND (pend, quote, new); break;
376 case BRACKET: APPEND (pend, brack, new); break;
377 case SYSTEM: APPEND (pend, systm, new); break;
378 case AFTER: APPEND (pend, after, new); break;
382 /* Merge the four include chains together in the order quote, bracket,
383 system, after. Remove duplicate dirs (as determined by
384 INO_T_EQ()). The system_include and after_include chains are never
385 referred to again after this function; all access is through the
386 bracket_include path.
388 For the future: Check if the directory is empty (but
389 how?) and possibly preload the include hash. */
392 merge_include_chains (pfile)
395 struct file_name_list *prev, *cur, *other;
396 struct file_name_list *quote, *brack, *systm, *after;
397 struct file_name_list *qtail, *btail, *stail, *atail;
399 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
401 qtail = pend->quote_tail;
402 btail = pend->brack_tail;
403 stail = pend->systm_tail;
404 atail = pend->after_tail;
406 quote = pend->quote_head;
407 brack = pend->brack_head;
408 systm = pend->systm_head;
409 after = pend->after_head;
411 /* Paste together bracket, system, and after include chains. */
421 /* This is a bit tricky.
422 First we drop dupes from the quote-include list.
423 Then we drop dupes from the bracket-include list.
424 Finally, if qtail and brack are the same directory,
427 We can't just merge the lists and then uniquify them because
428 then we may lose directories from the <> search path that should
429 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
430 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
431 -Ibar -I- -Ifoo -Iquux.
433 Note that this algorithm is quadratic in the number of -I switches,
434 which is acceptable since there aren't usually that many of them. */
436 for (cur = quote, prev = NULL; cur; cur = cur->next)
438 for (other = quote; other != cur; other = other->next)
439 if (INO_T_EQ (cur->ino, other->ino)
440 && cur->dev == other->dev)
442 if (CPP_OPTION (pfile, verbose))
443 fprintf (stderr, _("ignoring duplicate directory `%s'\n"),
446 prev->next = cur->next;
456 for (cur = brack; cur; cur = cur->next)
458 for (other = brack; other != cur; other = other->next)
459 if (INO_T_EQ (cur->ino, other->ino)
460 && cur->dev == other->dev)
462 if (CPP_OPTION (pfile, verbose))
463 fprintf (stderr, _("ignoring duplicate directory `%s'\n"),
466 prev->next = cur->next;
477 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
481 if (CPP_OPTION (pfile, verbose))
482 fprintf (stderr, _("ignoring duplicate directory `%s'\n"),
492 while (cur->next != qtail)
495 if (CPP_OPTION (pfile, verbose))
496 fprintf (stderr, _("ignoring duplicate directory `%s'\n"),
509 CPP_OPTION (pfile, quote_include) = quote;
510 CPP_OPTION (pfile, bracket_include) = brack;
514 /* Write out a #define command for the special named MACRO_NAME
515 to PFILE's token_buffer. */
518 dump_special_to_buffer (pfile, macro_name, macro_len)
520 const U_CHAR *macro_name;
523 static const char define_directive[] = "#define ";
524 CPP_RESERVE (pfile, sizeof(define_directive) + macro_len);
525 CPP_PUTS_Q (pfile, define_directive, sizeof(define_directive)-1);
526 CPP_PUTS_Q (pfile, macro_name, macro_len);
527 CPP_PUTC_Q (pfile, ' ');
528 _cpp_expand_to_buffer (pfile, macro_name, macro_len);
529 CPP_PUTC (pfile, '\n');
532 /* Initialize a cpp_reader structure. */
534 cpp_reader_init (pfile)
537 memset ((char *) pfile, 0, sizeof (cpp_reader));
539 pfile->token_buffer_size = 200;
540 pfile->token_buffer = (U_CHAR *) xmalloc (pfile->token_buffer_size);
541 CPP_SET_WRITTEN (pfile, 0);
543 CPP_OPTION (pfile, dollars_in_ident) = 1;
544 CPP_OPTION (pfile, cplusplus_comments) = 1;
545 CPP_OPTION (pfile, warn_import) = 1;
546 CPP_OPTION (pfile, discard_comments) = 1;
547 CPP_OPTION (pfile, show_column) = 1;
549 CPP_OPTION (pfile, pending) =
550 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
552 _cpp_init_macro_hash (pfile);
553 _cpp_init_include_hash (pfile);
556 /* Initialize a cpp_printer structure. As a side effect, open the
559 cpp_printer_init (pfile, print)
563 memset (print, '\0', sizeof (cpp_printer));
564 if (CPP_OPTION (pfile, out_fname) == NULL)
565 CPP_OPTION (pfile, out_fname) = "";
567 if (CPP_OPTION (pfile, out_fname)[0] == '\0')
568 print->outf = stdout;
571 print->outf = fopen (CPP_OPTION (pfile, out_fname), "w");
574 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
581 /* Free resources used by PFILE.
582 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
587 while (CPP_BUFFER (pfile) != NULL)
588 cpp_pop_buffer (pfile);
590 if (pfile->token_buffer)
592 free (pfile->token_buffer);
593 pfile->token_buffer = NULL;
596 if (pfile->input_buffer)
598 free (pfile->input_buffer);
599 pfile->input_buffer = NULL;
600 pfile->input_buffer_len = 0;
604 deps_free (pfile->deps);
606 htab_delete (pfile->hashtab);
607 htab_delete (pfile->all_include_files);
611 /* This structure defines one built-in macro. A node of type TYPE will
612 be entered in the macro hash table under the name NAME, with value
613 VALUE (if any). FLAGS tweaks the behavior a little:
614 DUMP write debug info for this macro
615 VERS value is the global version_string, quoted
616 ULP value is the global user_label_prefix
624 unsigned short flags;
631 #define B(n, t) { U n, 0, t, 0, sizeof n - 1 }
632 #define C(n, v) { U n, U v, T_CONST, DUMP, sizeof n - 1 }
633 #define X(n, v, t, f) { U n, U v, t, DUMP|f, sizeof n - 1 }
634 static const struct builtin builtin_array[] =
636 B("__TIME__", T_TIME),
637 B("__DATE__", T_DATE),
638 B("__FILE__", T_FILE),
639 B("__BASE_FILE__", T_BASE_FILE),
640 B("__LINE__", T_SPECLINE),
641 B("__INCLUDE_LEVEL__", T_INCLUDE_LEVEL),
643 X("__VERSION__", 0, T_XCONST, VERS),
644 X("__USER_LABEL_PREFIX__", 0, T_CONST, ULP),
645 X("__STDC__", "1", T_STDC, 0),
646 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
647 C("__HAVE_BUILTIN_SETJMP__", "1"),
648 #ifndef NO_BUILTIN_SIZE_TYPE
649 C("__SIZE_TYPE__", SIZE_TYPE),
651 #ifndef NO_BUILTIN_PTRDIFF_TYPE
652 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
654 #ifndef NO_BUILTIN_WCHAR_TYPE
655 C("__WCHAR_TYPE__", WCHAR_TYPE),
661 #define builtin_array_end \
662 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
664 /* Subroutine of cpp_start_read; reads the builtins table above and
665 enters the macros into the hash table. */
667 initialize_builtins (pfile)
670 const struct builtin *b;
673 for(b = builtin_array; b < builtin_array_end; b++)
675 if (b->type == T_STDC && CPP_TRADITIONAL (pfile))
679 val = (const U_CHAR *) user_label_prefix;
680 else if (b->flags & VERS)
682 val = (const U_CHAR *) xmalloc (strlen (version_string) + 3);
683 sprintf ((char *)val, "\"%s\"", version_string);
688 hp = _cpp_lookup (pfile, b->name, b->len);
689 hp->value.cpval = val;
692 if ((b->flags & DUMP) && CPP_OPTION (pfile, debug_output))
693 dump_special_to_buffer (pfile, b->name, b->len);
701 /* Another subroutine of cpp_start_read. This one sets up to do
702 dependency-file output. */
704 initialize_dependency_output (pfile)
707 char *spec, *s, *output_file;
709 /* Either of two environment variables can specify output of deps.
710 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
711 where OUTPUT_FILE is the file to write deps info to
712 and DEPS_TARGET is the target to mention in the deps. */
714 if (CPP_OPTION (pfile, print_deps) == 0)
716 spec = getenv ("DEPENDENCIES_OUTPUT");
718 CPP_OPTION (pfile, print_deps) = 1;
721 spec = getenv ("SUNPRO_DEPENDENCIES");
723 CPP_OPTION (pfile, print_deps) = 2;
728 /* Find the space before the DEPS_TARGET, if there is one. */
729 s = strchr (spec, ' ');
732 CPP_OPTION (pfile, deps_target) = s + 1;
733 output_file = (char *) xmalloc (s - spec + 1);
734 memcpy (output_file, spec, s - spec);
735 output_file[s - spec] = 0;
739 CPP_OPTION (pfile, deps_target) = 0;
743 CPP_OPTION (pfile, deps_file) = output_file;
744 CPP_OPTION (pfile, print_deps_append) = 1;
747 pfile->deps = deps_init ();
749 /* Print the expected object file name as the target of this Make-rule. */
750 if (CPP_OPTION (pfile, deps_target))
751 deps_add_target (pfile->deps, CPP_OPTION (pfile, deps_target));
752 else if (*CPP_OPTION (pfile, in_fname) == 0)
753 deps_add_target (pfile->deps, "-");
755 deps_calc_target (pfile->deps, CPP_OPTION (pfile, in_fname));
757 if (CPP_OPTION (pfile, in_fname))
758 deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
761 /* And another subroutine. This one sets up the standard include path. */
763 initialize_standard_includes (pfile)
767 const struct default_include *p;
768 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
770 /* Several environment variables may add to the include search path.
771 CPATH specifies an additional list of directories to be searched
772 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
773 etc. specify an additional list of directories to be searched as
774 if specified with -isystem, for the language indicated. */
776 GET_ENV_PATH_LIST (path, "CPATH");
777 if (path != 0 && *path != 0)
778 path_include (pfile, CPP_OPTION (pfile, pending), path, BRACKET);
780 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
783 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
786 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
789 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
792 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
795 if (path != 0 && *path != 0)
796 path_include (pfile, CPP_OPTION (pfile, pending), path, SYSTEM);
798 /* Search "translated" versions of GNU directories.
799 These have /usr/local/lib/gcc... replaced by specd_prefix. */
800 if (specd_prefix != 0)
802 char *default_prefix = (char *) alloca (sizeof GCC_INCLUDE_DIR - 7);
803 /* Remove the `include' from /usr/local/lib/gcc.../include.
804 GCC_INCLUDE_DIR will always end in /include. */
805 int default_len = sizeof GCC_INCLUDE_DIR - 8;
806 int specd_len = strlen (specd_prefix);
808 memcpy (default_prefix, GCC_INCLUDE_DIR, default_len);
809 default_prefix[default_len] = '\0';
811 for (p = include_defaults_array; p->fname; p++)
813 /* Some standard dirs are only for C++. */
815 || (CPP_OPTION (pfile, cplusplus)
816 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
818 /* Does this dir start with the prefix? */
819 if (!strncmp (p->fname, default_prefix, default_len))
821 /* Yes; change prefix and add to search list. */
822 int flen = strlen (p->fname);
823 int this_len = specd_len + flen - default_len;
824 char *str = (char *) xmalloc (this_len + 1);
825 memcpy (str, specd_prefix, specd_len);
826 memcpy (str + specd_len,
827 p->fname + default_len,
828 flen - default_len + 1);
830 append_include_chain (pfile, CPP_OPTION (pfile, pending),
831 str, SYSTEM, p->cxx_aware);
837 /* Search ordinary names for GNU include directories. */
838 for (p = include_defaults_array; p->fname; p++)
840 /* Some standard dirs are only for C++. */
842 || (CPP_OPTION (pfile, cplusplus)
843 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
845 /* XXX Potential memory leak! */
846 char *str = xstrdup (update_path (p->fname, p->component));
847 append_include_chain (pfile, CPP_OPTION (pfile, pending),
848 str, SYSTEM, p->cxx_aware);
853 /* This is called after options have been processed.
854 * Check options for consistency, and setup for processing input
855 * from the file named FNAME. (Use standard input if FNAME==NULL.)
856 * Return 1 on success, 0 on failure.
860 cpp_start_read (pfile, print, fname)
865 struct pending_option *p, *q;
867 /* -MG doesn't select the form of output and must be specified with one of
868 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
869 inhibit compilation. */
870 if (CPP_OPTION (pfile, print_deps_missing_files)
871 && (CPP_OPTION (pfile, print_deps) == 0
872 || !CPP_OPTION (pfile, no_output)))
874 cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
878 /* Chill should not be used with -trigraphs. */
879 if (CPP_OPTION (pfile, chill) && CPP_OPTION (pfile, trigraphs))
881 cpp_warning (pfile, "-lang-chill and -trigraphs are mutually exclusive");
882 CPP_OPTION (pfile, trigraphs) = 0;
885 /* -Wtraditional is not useful in C++ mode. */
886 if (CPP_OPTION (pfile, cplusplus))
887 CPP_OPTION (pfile, warn_traditional) = 0;
889 /* Set this if it hasn't been set already. */
890 if (user_label_prefix == NULL)
891 user_label_prefix = USER_LABEL_PREFIX;
893 /* Don't bother trying to do macro expansion if we've already done
895 if (CPP_OPTION (pfile, preprocessed))
896 pfile->no_macro_expand++;
898 /* Set up the IStable. This doesn't do anything if we were compiled
899 with a compiler that supports C99 designated initializers. */
902 /* Set up the tables used by read_and_prescan. */
903 _cpp_init_input_buffer (pfile);
905 /* Set up the include search path now. */
906 if (! CPP_OPTION (pfile, no_standard_includes))
907 initialize_standard_includes (pfile);
909 merge_include_chains (pfile);
911 /* With -v, print the list of dirs to search. */
912 if (CPP_OPTION (pfile, verbose))
914 struct file_name_list *l;
915 fprintf (stderr, _("#include \"...\" search starts here:\n"));
916 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
918 if (l == CPP_OPTION (pfile, bracket_include))
919 fprintf (stderr, _("#include <...> search starts here:\n"));
920 fprintf (stderr, " %s\n", l->name);
922 fprintf (stderr, _("End of search list.\n"));
925 /* Open the main input file. This must be done early, so we have a
926 buffer to stand on. */
927 if (CPP_OPTION (pfile, in_fname) == NULL
928 || *CPP_OPTION (pfile, in_fname) == 0)
930 CPP_OPTION (pfile, in_fname) = fname;
931 if (CPP_OPTION (pfile, in_fname) == NULL)
932 CPP_OPTION (pfile, in_fname) = "";
934 if (CPP_OPTION (pfile, out_fname) == NULL)
935 CPP_OPTION (pfile, out_fname) = "";
937 if (!cpp_read_file (pfile, fname))
940 initialize_dependency_output (pfile);
942 /* -D and friends may produce output, which should be identified
945 CPP_BUFFER (pfile)->lineno = 0;
950 print->last_fname = CPP_BUFFER (pfile)->nominal_fname;
951 print->last_bsd = pfile->buffer_stack_depth;
952 print->written = CPP_WRITTEN (pfile);
955 /* Install __LINE__, etc. */
956 initialize_builtins (pfile);
958 /* Do -U's, -D's and -A's in the order they were seen. */
959 p = CPP_OPTION (pfile, pending)->directive_head;
962 (*p->handler) (pfile, p->arg);
967 pfile->done_initializing = 1;
968 pfile->only_seen_white = 2;
969 CPP_BUFFER (pfile)->lineno = 1;
970 if (print && ! CPP_OPTION (pfile, no_output))
971 cpp_output_tokens (pfile, print);
973 /* The -imacros files can be scanned now, but the -include files
974 have to be pushed onto the include stack and processed later,
975 in the main loop calling cpp_get_token. */
977 p = CPP_OPTION (pfile, pending)->imacros_head;
980 if (cpp_read_file (pfile, p->arg))
981 cpp_scan_buffer_nooutput (pfile);
987 p = CPP_OPTION (pfile, pending)->include_head;
990 if (cpp_read_file (pfile, p->arg)
991 && print && ! CPP_OPTION (pfile, no_output))
992 cpp_output_tokens (pfile, print);
998 free (CPP_OPTION (pfile, pending));
999 CPP_OPTION (pfile, pending) = NULL;
1004 /* This is called at the end of preprocessing. It pops the
1005 last buffer and writes dependency output. It should also
1006 clear macro definitions, such that you could call cpp_start_read
1007 with a new filename to restart processing. */
1009 cpp_finish (pfile, print)
1013 if (CPP_BUFFER (pfile))
1015 cpp_ice (pfile, "buffers still stacked in cpp_finish");
1016 while (CPP_BUFFER (pfile))
1017 cpp_pop_buffer (pfile);
1020 /* Don't write the deps file if preprocessing has failed. */
1021 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1023 /* Stream on which to print the dependency information. */
1024 FILE *deps_stream = 0;
1025 const char *deps_mode
1026 = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
1027 if (CPP_OPTION (pfile, deps_file) == 0)
1028 deps_stream = stdout;
1031 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
1032 if (deps_stream == 0)
1033 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
1037 deps_write (pfile->deps, deps_stream, 72);
1038 if (CPP_OPTION (pfile, deps_file))
1040 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1041 cpp_fatal (pfile, "I/O error on output");
1046 if (CPP_OPTION (pfile, dump_macros) == dump_only)
1047 _cpp_dump_macro_hash (pfile);
1049 /* Flush any pending output. */
1052 cpp_output_tokens (pfile, print);
1053 if (ferror (print->outf) || fclose (print->outf))
1054 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
1059 new_pending_directive (pend, text, handler)
1060 struct cpp_pending *pend;
1062 cl_directive_handler handler;
1064 struct pending_option *o = (struct pending_option *)
1065 xmalloc (sizeof (struct pending_option));
1069 o->handler = handler;
1070 APPEND (pend, directive, o);
1073 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1074 I.e. a const string initializer with parens around it. That is
1075 what N_("string") resolves to, so we make no_* be macros instead. */
1076 #define no_arg N_("Argument missing after %s")
1077 #define no_ass N_("Assertion missing after %s")
1078 #define no_dir N_("Directory name missing after %s")
1079 #define no_fil N_("File name missing after %s")
1080 #define no_mac N_("Macro name missing after %s")
1081 #define no_pth N_("Path name missing after %s")
1083 /* This is the list of all command line options, with the leading
1084 "-" removed. It must be sorted in ASCII collating order. */
1085 #define COMMAND_LINE_OPTIONS \
1086 DEF_OPT("", 0, OPT_stdin_stdout) \
1087 DEF_OPT("$", 0, OPT_dollar) \
1088 DEF_OPT("+", 0, OPT_plus) \
1089 DEF_OPT("-help", 0, OPT__help) \
1090 DEF_OPT("-version", 0, OPT__version) \
1091 DEF_OPT("A", no_ass, OPT_A) \
1092 DEF_OPT("C", 0, OPT_C) \
1093 DEF_OPT("D", no_mac, OPT_D) \
1094 DEF_OPT("H", 0, OPT_H) \
1095 DEF_OPT("I", no_dir, OPT_I) \
1096 DEF_OPT("M", 0, OPT_M) \
1097 DEF_OPT("MD", no_fil, OPT_MD) \
1098 DEF_OPT("MG", 0, OPT_MG) \
1099 DEF_OPT("MM", 0, OPT_MM) \
1100 DEF_OPT("MMD", no_fil, OPT_MMD) \
1101 DEF_OPT("P", 0, OPT_P) \
1102 DEF_OPT("U", no_mac, OPT_U) \
1103 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1104 DEF_OPT("d", no_arg, OPT_d) \
1105 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1106 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1107 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1108 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1109 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1110 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1111 DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
1112 DEF_OPT("h", 0, OPT_h) \
1113 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1114 DEF_OPT("imacros", no_fil, OPT_imacros) \
1115 DEF_OPT("include", no_fil, OPT_include) \
1116 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1117 DEF_OPT("isystem", no_dir, OPT_isystem) \
1118 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1119 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1120 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1121 DEF_OPT("lang-c", 0, OPT_lang_c) \
1122 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1123 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1124 DEF_OPT("lang-chill", 0, OPT_lang_chill) \
1125 DEF_OPT("lang-fortran", 0, OPT_lang_fortran) \
1126 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1127 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1128 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1129 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1130 DEF_OPT("o", no_fil, OPT_o) \
1131 DEF_OPT("pedantic", 0, OPT_pedantic) \
1132 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1133 DEF_OPT("remap", 0, OPT_remap) \
1134 DEF_OPT("std=c89", 0, OPT_std_c89) \
1135 DEF_OPT("std=c99", 0, OPT_std_c99) \
1136 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1137 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1138 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1139 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1140 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1141 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1142 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1143 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1144 DEF_OPT("traditional", 0, OPT_traditional) \
1145 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1146 DEF_OPT("v", 0, OPT_v) \
1147 DEF_OPT("w", 0, OPT_w)
1149 #define DEF_OPT(text, msg, code) code,
1152 COMMAND_LINE_OPTIONS
1159 const char *opt_text;
1162 enum opt_code opt_code;
1165 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1167 static struct cl_option cl_options[] =
1169 static const struct cl_option cl_options[] =
1172 COMMAND_LINE_OPTIONS
1175 #undef COMMAND_LINE_OPTIONS
1177 /* Perform a binary search to find which, if any, option the given
1178 command-line matches. Returns its index in the option array,
1179 negative on failure. Complications arise since some options can be
1180 suffixed with an argument, and multiple complete matches can occur,
1181 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1182 accept options beginning with -g and -W that we do not recognise,
1183 but not to swallow any subsequent command line argument; these are
1184 handled as special cases in cpp_handle_option */
1186 parse_option (input)
1189 unsigned int md, mn, mx;
1200 opt_len = cl_options[md].opt_len;
1201 comp = strncmp (input, cl_options[md].opt_text, opt_len);
1209 if (input[opt_len] == '\0')
1211 /* We were passed more text. If the option takes an argument,
1212 we may match a later option or we may have been passed the
1213 argument. The longest possible option match succeeds.
1214 If the option takes no arguments we have not matched and
1215 continue the search (e.g. input="stdc++" match was "stdc") */
1217 if (cl_options[md].msg)
1219 /* Scan forwards. If we get an exact match, return it.
1220 Otherwise, return the longest option-accepting match.
1221 This loops no more than twice with current options */
1223 for (; mn < N_OPTS; mn++)
1225 opt_len = cl_options[mn].opt_len;
1226 if (strncmp (input, cl_options[mn].opt_text, opt_len))
1228 if (input[opt_len] == '\0')
1230 if (cl_options[mn].msg)
1241 /* Handle one command-line option in (argc, argv).
1242 Can be called multiple times, to handle multiple sets of options.
1243 Returns number of strings consumed. */
1246 handle_option (pfile, argc, argv)
1253 if (argv[i][0] != '-')
1255 if (CPP_OPTION (pfile, out_fname) != NULL)
1256 cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
1258 else if (CPP_OPTION (pfile, in_fname) != NULL)
1259 CPP_OPTION (pfile, out_fname) = argv[i];
1261 CPP_OPTION (pfile, in_fname) = argv[i];
1265 enum opt_code opt_code;
1267 const char *arg = 0;
1270 opt_index = parse_option (&argv[i][1]);
1274 opt_code = cl_options[opt_index].opt_code;
1275 if (cl_options[opt_index].msg)
1277 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1279 /* Yuk. Special case for -g and -W as they must not swallow
1280 up any following argument. If this becomes common, add
1281 another field to the cl_options table */
1282 if (arg[0] == '\0' && !(opt_code == OPT_g || opt_code == OPT_W))
1287 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1295 case N_OPTS: /* shut GCC up */
1297 case OPT_fleading_underscore:
1298 user_label_prefix = "_";
1300 case OPT_fno_leading_underscore:
1301 user_label_prefix = "";
1303 case OPT_fpreprocessed:
1304 CPP_OPTION (pfile, preprocessed) = 1;
1306 case OPT_fno_preprocessed:
1307 CPP_OPTION (pfile, preprocessed) = 0;
1309 case OPT_fshow_column:
1310 CPP_OPTION (pfile, show_column) = 1;
1312 case OPT_fno_show_column:
1313 CPP_OPTION (pfile, show_column) = 0;
1316 CPP_OPTION (pfile, inhibit_warnings) = 1;
1318 case OPT_g: /* Silently ignore anything but -g3 */
1319 if (!strcmp(&argv[i][2], "3"))
1320 CPP_OPTION (pfile, debug_output) = 1;
1328 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1332 CPP_OPTION (pfile, discard_comments) = 0;
1335 CPP_OPTION (pfile, no_line_commands) = 1;
1337 case OPT_dollar: /* Don't include $ in identifiers. */
1338 CPP_OPTION (pfile, dollars_in_ident) = 0;
1341 CPP_OPTION (pfile, print_include_names) = 1;
1344 new_pending_directive (CPP_OPTION (pfile, pending), arg, cpp_define);
1346 case OPT_pedantic_errors:
1347 CPP_OPTION (pfile, pedantic_errors) = 1;
1350 CPP_OPTION (pfile, pedantic) = 1;
1352 case OPT_traditional:
1353 CPP_OPTION (pfile, traditional) = 1;
1354 CPP_OPTION (pfile, cplusplus_comments) = 0;
1355 CPP_OPTION (pfile, trigraphs) = 0;
1356 CPP_OPTION (pfile, warn_trigraphs) = 0;
1359 CPP_OPTION (pfile, trigraphs) = 1;
1362 CPP_OPTION (pfile, cplusplus) = 1;
1363 CPP_OPTION (pfile, cplusplus_comments) = 1;
1366 CPP_OPTION (pfile, remap) = 1;
1369 CPP_OPTION (pfile, include_prefix) = arg;
1370 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1373 CPP_OPTION (pfile, cplusplus) = 0;
1374 CPP_OPTION (pfile, cplusplus_comments) = 1;
1375 CPP_OPTION (pfile, c89) = 0;
1376 CPP_OPTION (pfile, c99) = 1;
1377 CPP_OPTION (pfile, objc) = 0;
1380 CPP_OPTION (pfile, cplusplus) = 0;
1381 CPP_OPTION (pfile, cplusplus_comments) = 0;
1382 CPP_OPTION (pfile, c89) = 1;
1383 CPP_OPTION (pfile, c99) = 0;
1384 CPP_OPTION (pfile, objc) = 0;
1385 CPP_OPTION (pfile, trigraphs) = 1;
1386 new_pending_directive (CPP_OPTION (pfile, pending),
1387 "__STRICT_ANSI__", cpp_define);
1389 case OPT_lang_cplusplus:
1390 CPP_OPTION (pfile, cplusplus) = 1;
1391 CPP_OPTION (pfile, cplusplus_comments) = 1;
1392 CPP_OPTION (pfile, c89) = 0;
1393 CPP_OPTION (pfile, c99) = 0;
1394 CPP_OPTION (pfile, objc) = 0;
1397 case OPT_lang_objcplusplus:
1398 CPP_OPTION (pfile, cplusplus) = opt_code == OPT_lang_objcplusplus;
1399 CPP_OPTION (pfile, cplusplus_comments) = 1;
1400 CPP_OPTION (pfile, c89) = 0;
1401 CPP_OPTION (pfile, c99) = 0;
1402 CPP_OPTION (pfile, objc) = 1;
1405 CPP_OPTION (pfile, lang_asm) = 1;
1407 case OPT_lang_fortran:
1408 CPP_OPTION (pfile, lang_fortran) = 1;
1409 CPP_OPTION (pfile, cplusplus_comments) = 0;
1411 case OPT_lang_chill:
1412 CPP_OPTION (pfile, objc) = 0;
1413 CPP_OPTION (pfile, cplusplus) = 0;
1414 CPP_OPTION (pfile, chill) = 1;
1415 CPP_OPTION (pfile, traditional) = 1;
1418 /* -nostdinc causes no default include directories.
1419 You must specify all include-file directories with -I. */
1420 CPP_OPTION (pfile, no_standard_includes) = 1;
1422 case OPT_nostdincplusplus:
1423 /* -nostdinc++ causes no default C++-specific include directories. */
1424 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1427 CPP_OPTION (pfile, cplusplus) = 0;
1428 CPP_OPTION (pfile, cplusplus_comments) = 1;
1429 CPP_OPTION (pfile, c89) = 1;
1430 CPP_OPTION (pfile, c99) = 0;
1431 CPP_OPTION (pfile, objc) = 0;
1435 CPP_OPTION (pfile, cplusplus) = 0;
1436 CPP_OPTION (pfile, cplusplus_comments) = 1;
1437 CPP_OPTION (pfile, c89) = 0;
1438 CPP_OPTION (pfile, c99) = 1;
1439 CPP_OPTION (pfile, objc) = 0;
1440 new_pending_directive (CPP_OPTION (pfile, pending),
1441 "__STDC_VERSION__=199901L", cpp_define);
1443 case OPT_std_iso9899_199409:
1444 new_pending_directive (CPP_OPTION (pfile, pending),
1445 "__STDC_VERSION__=199409L", cpp_define);
1447 case OPT_std_iso9899_1990:
1449 CPP_OPTION (pfile, cplusplus) = 0;
1450 CPP_OPTION (pfile, cplusplus_comments) = 0;
1451 CPP_OPTION (pfile, c89) = 1;
1452 CPP_OPTION (pfile, c99) = 0;
1453 CPP_OPTION (pfile, objc) = 0;
1454 CPP_OPTION (pfile, trigraphs) = 1;
1455 new_pending_directive (CPP_OPTION (pfile, pending),
1456 "__STRICT_ANSI__", cpp_define);
1458 case OPT_std_iso9899_199x:
1459 case OPT_std_iso9899_1999:
1462 CPP_OPTION (pfile, cplusplus) = 0;
1463 CPP_OPTION (pfile, cplusplus_comments) = 1;
1464 CPP_OPTION (pfile, c89) = 0;
1465 CPP_OPTION (pfile, c99) = 1;
1466 CPP_OPTION (pfile, objc) = 0;
1467 CPP_OPTION (pfile, trigraphs) = 1;
1468 new_pending_directive (CPP_OPTION (pfile, pending),
1469 "__STRICT_ANSI__", cpp_define);
1470 new_pending_directive (CPP_OPTION (pfile, pending),
1471 "__STDC_VERSION__=199901L", cpp_define);
1474 if (CPP_OPTION (pfile, out_fname) != NULL)
1476 cpp_fatal (pfile, "Output filename specified twice");
1479 CPP_OPTION (pfile, out_fname) = arg;
1480 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1481 CPP_OPTION (pfile, out_fname) = "";
1484 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1485 #ifdef TARGET_VERSION
1488 fputc ('\n', stderr);
1489 CPP_OPTION (pfile, verbose) = 1;
1491 case OPT_stdin_stdout:
1492 /* JF handle '-' as file name meaning stdin or stdout */
1493 if (CPP_OPTION (pfile, in_fname) == NULL)
1494 CPP_OPTION (pfile, in_fname) = "";
1495 else if (CPP_OPTION (pfile, out_fname) == NULL)
1496 CPP_OPTION (pfile, out_fname) = "";
1499 /* Args to -d specify what parts of macros to dump.
1500 Silently ignore unrecognised options; they may
1501 be aimed at the compiler proper. */
1505 while ((c = *arg++) != '\0')
1509 CPP_OPTION (pfile, dump_macros) = dump_only;
1510 CPP_OPTION (pfile, no_output) = 1;
1513 CPP_OPTION (pfile, dump_macros) = dump_names;
1516 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1519 CPP_OPTION (pfile, dump_includes) = 1;
1524 /* The style of the choices here is a bit mixed.
1525 The chosen scheme is a hybrid of keeping all options in one string
1526 and specifying each option in a separate argument:
1527 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1528 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1529 -M[M][G][D file]. This is awkward to handle in specs, and is not
1531 /* ??? -MG must be specified in addition to one of -M or -MM.
1532 This can be relaxed in the future without breaking anything.
1533 The converse isn't true. */
1535 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1537 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1543 if (opt_code == OPT_M || opt_code == OPT_MD)
1544 CPP_OPTION (pfile, print_deps) = 2;
1546 CPP_OPTION (pfile, print_deps) = 1;
1548 /* For -MD and -MMD options, write deps on file named by next arg */
1549 /* For -M and -MM, write deps on standard output
1550 and suppress the usual output. */
1551 if (opt_code == OPT_MD || opt_code == OPT_MMD)
1552 CPP_OPTION (pfile, deps_file) = arg;
1554 CPP_OPTION (pfile, no_output) = 1;
1559 /* -A with an argument beginning with '-' acts as
1560 #unassert on whatever immediately follows the '-'.
1561 If "-" is the whole argument, we eliminate all
1562 predefined macros and assertions, including those
1563 that were specified earlier on the command line.
1564 That way we can get rid of any that were passed
1565 automatically in from GCC. */
1569 struct pending_option *o1, *o2;
1571 o1 = CPP_OPTION (pfile, pending)->directive_head;
1578 CPP_OPTION (pfile, pending)->directive_head = NULL;
1579 CPP_OPTION (pfile, pending)->directive_tail = NULL;
1582 new_pending_directive (CPP_OPTION (pfile, pending),
1583 arg + 1, cpp_unassert);
1586 new_pending_directive (CPP_OPTION (pfile, pending),
1590 new_pending_directive (CPP_OPTION (pfile, pending), arg, cpp_undef);
1592 case OPT_I: /* Add directory to path for includes. */
1593 if (!strcmp (arg, "-"))
1596 Use the preceding -I directories for #include "..."
1597 but not #include <...>.
1598 Don't search the directory of the present file
1599 for #include "...". (Note that -I. -I- is not the same as
1600 the default setup; -I. uses the compiler's working dir.) */
1601 if (! CPP_OPTION (pfile, ignore_srcdir))
1603 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1604 pend->quote_head = pend->brack_head;
1605 pend->quote_tail = pend->brack_tail;
1606 pend->brack_head = 0;
1607 pend->brack_tail = 0;
1608 CPP_OPTION (pfile, ignore_srcdir) = 1;
1612 cpp_fatal (pfile, "-I- specified twice");
1617 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1618 xstrdup (arg), BRACKET, 0);
1621 /* Add directory to beginning of system include path, as a system
1622 include directory. */
1623 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1624 xstrdup (arg), SYSTEM, 0);
1628 struct pending_option *o = (struct pending_option *)
1629 xmalloc (sizeof (struct pending_option));
1632 /* This list has to be built in reverse order so that
1633 when cpp_start_read pushes all the -include files onto
1634 the buffer stack, they will be scanned in forward order. */
1635 o->next = CPP_OPTION (pfile, pending)->include_head;
1636 CPP_OPTION (pfile, pending)->include_head = o;
1641 struct pending_option *o = (struct pending_option *)
1642 xmalloc (sizeof (struct pending_option));
1646 APPEND (CPP_OPTION (pfile, pending), imacros, o);
1649 case OPT_iwithprefix:
1650 /* Add directory to end of path for includes,
1651 with the default prefix at the front of its name. */
1653 case OPT_iwithprefixbefore:
1654 /* Add directory to main path for includes,
1655 with the default prefix at the front of its name. */
1662 if (CPP_OPTION (pfile, include_prefix) != 0)
1664 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1665 fname = xmalloc (ipl + len + 1);
1666 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1667 memcpy (fname + ipl, arg, len + 1);
1671 fname = xmalloc (sizeof GCC_INCLUDE_DIR - 8 + len);
1672 memcpy (fname, GCC_INCLUDE_DIR, sizeof GCC_INCLUDE_DIR - 9);
1673 memcpy (fname + sizeof GCC_INCLUDE_DIR - 9, arg, len + 1);
1676 append_include_chain (pfile, CPP_OPTION (pfile, pending), fname,
1677 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1681 /* Add directory to end of path for includes. */
1682 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1683 xstrdup (arg), AFTER, 0);
1686 /* Silently ignore unrecognised options */
1687 if (!strcmp (argv[i], "-Wall"))
1689 CPP_OPTION (pfile, warn_trigraphs) = 1;
1690 CPP_OPTION (pfile, warn_comments) = 1;
1692 else if (!strcmp (argv[i], "-Wtraditional"))
1693 CPP_OPTION (pfile, warn_traditional) = 1;
1694 else if (!strcmp (argv[i], "-Wtrigraphs"))
1695 CPP_OPTION (pfile, warn_trigraphs) = 1;
1696 else if (!strcmp (argv[i], "-Wcomment"))
1697 CPP_OPTION (pfile, warn_comments) = 1;
1698 else if (!strcmp (argv[i], "-Wcomments"))
1699 CPP_OPTION (pfile, warn_comments) = 1;
1700 else if (!strcmp (argv[i], "-Wundef"))
1701 CPP_OPTION (pfile, warn_undef) = 1;
1702 else if (!strcmp (argv[i], "-Wimport"))
1703 CPP_OPTION (pfile, warn_import) = 1;
1704 else if (!strcmp (argv[i], "-Werror"))
1705 CPP_OPTION (pfile, warnings_are_errors) = 1;
1706 else if (!strcmp (argv[i], "-Wno-traditional"))
1707 CPP_OPTION (pfile, warn_traditional) = 0;
1708 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1709 CPP_OPTION (pfile, warn_trigraphs) = 0;
1710 else if (!strcmp (argv[i], "-Wno-comment"))
1711 CPP_OPTION (pfile, warn_comments) = 0;
1712 else if (!strcmp (argv[i], "-Wno-comments"))
1713 CPP_OPTION (pfile, warn_comments) = 0;
1714 else if (!strcmp (argv[i], "-Wno-undef"))
1715 CPP_OPTION (pfile, warn_undef) = 0;
1716 else if (!strcmp (argv[i], "-Wno-import"))
1717 CPP_OPTION (pfile, warn_import) = 0;
1718 else if (!strcmp (argv[i], "-Wno-error"))
1719 CPP_OPTION (pfile, warnings_are_errors) = 0;
1728 opt_comp (const void *p1, const void *p2)
1730 return strcmp (((struct cl_option *)p1)->opt_text,
1731 ((struct cl_option *)p2)->opt_text);
1735 /* Handle command-line options in (argc, argv).
1736 Can be called multiple times, to handle multiple sets of options.
1737 Returns if an unrecognized option is seen.
1738 Returns number of strings consumed. */
1740 cpp_handle_options (pfile, argc, argv)
1746 int strings_processed;
1749 static int opts_sorted = 0;
1754 /* For non-ASCII hosts, the array needs to be sorted at runtime */
1755 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
1759 for (i = 0; i < argc; i += strings_processed)
1761 strings_processed = handle_option (pfile, argc - i, argv + i);
1762 if (strings_processed == 0)
1771 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1774 -include <file> Include the contents of <file> before other files\n\
1775 -imacros <file> Accept definition of macros in <file>\n\
1776 -iprefix <path> Specify <path> as a prefix for next two options\n\
1777 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1778 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1779 -isystem <dir> Add <dir> to the start of the system include path\n\
1780 -idirafter <dir> Add <dir> to the end of the system include path\n\
1781 -I <dir> Add <dir> to the end of the main include path\n\
1782 -I- Fine-grained include path control; see info docs\n\
1783 -nostdinc Do not search system include directories\n\
1784 (dirs specified with -isystem will still be used)\n\
1785 -nostdinc++ Do not search system include directories for C++\n\
1786 -o <file> Put output into <file>\n\
1787 -pedantic Issue all warnings demanded by strict ANSI C\n\
1788 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1789 -traditional Follow K&R pre-processor behaviour\n\
1790 -trigraphs Support ANSI C trigraphs\n\
1791 -lang-c Assume that the input sources are in C\n\
1792 -lang-c89 Assume that the input sources are in C89\n\
1793 -lang-c++ Assume that the input sources are in C++\n\
1794 -lang-objc Assume that the input sources are in ObjectiveC\n\
1795 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1796 -lang-asm Assume that the input sources are in assembler\n\
1797 -lang-fortran Assume that the input sources are in Fortran\n\
1798 -lang-chill Assume that the input sources are in Chill\n\
1799 -std=<std name> Specify the conformance standard; one of:\n\
1800 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1801 iso9899:199409, iso9899:1999\n\
1802 -+ Allow parsing of C++ style features\n\
1803 -w Inhibit warning messages\n\
1804 -Wtrigraphs Warn if trigraphs are encountered\n\
1805 -Wno-trigraphs Do not warn about trigraphs\n\
1806 -Wcomment{s} Warn if one comment starts inside another\n\
1807 -Wno-comment{s} Do not warn about comments\n\
1808 -Wtraditional Warn if a macro argument is/would be turned into\n\
1809 a string if -traditional is specified\n\
1810 -Wno-traditional Do not warn about stringification\n\
1811 -Wundef Warn if an undefined macro is used by #if\n\
1812 -Wno-undef Do not warn about testing undefined macros\n\
1813 -Wimport Warn about the use of the #import directive\n\
1814 -Wno-import Do not warn about the use of #import\n\
1815 -Werror Treat all warnings as errors\n\
1816 -Wno-error Do not treat warnings as errors\n\
1817 -Wall Enable all preprocessor warnings\n\
1818 -M Generate make dependencies\n\
1819 -MM As -M, but ignore system header files\n\
1820 -MD As -M, but put output in a .d file\n\
1821 -MMD As -MD, but ignore system header files\n\
1822 -MG Treat missing header file as generated files\n\
1823 -g3 Include #define and #undef directives in the output\n\
1824 -D<macro> Define a <macro> with string '1' as its value\n\
1825 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1826 -A<question> (<answer>) Assert the <answer> to <question>\n\
1827 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1828 -U<macro> Undefine <macro> \n\
1829 -v Display the version number\n\
1830 -H Print the name of header files as they are used\n\
1831 -C Do not discard comments\n\
1832 -dM Display a list of macro definitions active at end\n\
1833 -dD Preserve macro definitions in output\n\
1834 -dN As -dD except that only the names are preserved\n\
1835 -dI Include #include directives in the output\n\
1836 -P Do not generate #line directives\n\
1837 -$ Do not allow '$' in identifiers\n\
1838 -remap Remap file names when including files.\n\
1839 --version Display version information\n\
1840 -h or --help Display this information\n\