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. */
34 /* Predefined symbols, built-in macros, and the default include path. */
36 #ifndef GET_ENV_PATH_LIST
37 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
40 /* Windows does not natively support inodes, and neither does MSDOS.
41 Cygwin's emulation can generate non-unique inodes, so don't use it.
42 VMS has non-numeric inodes. */
44 #define INO_T_EQ(a, b) (!memcmp (&(a), &(b), sizeof (a)))
45 #elif (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
46 #define INO_T_EQ(a, b) 0
48 #define INO_T_EQ(a, b) ((a) == (b))
51 #ifndef STANDARD_INCLUDE_DIR
52 #define STANDARD_INCLUDE_DIR "/usr/include"
55 /* We let tm.h override the types used here, to handle trivial differences
56 such as the choice of unsigned int or long unsigned int for size_t.
57 When machines start needing nontrivial differences in the size type,
58 it would be best to do something here to figure out automatically
59 from other information what type to use. */
61 /* The string value for __SIZE_TYPE__. */
64 #define SIZE_TYPE "long unsigned int"
67 /* The string value for __PTRDIFF_TYPE__. */
70 #define PTRDIFF_TYPE "long int"
73 /* The string value for __WCHAR_TYPE__. */
76 #define WCHAR_TYPE "int"
79 /* The string value for __USER_LABEL_PREFIX__ */
81 #ifndef USER_LABEL_PREFIX
82 #define USER_LABEL_PREFIX ""
85 /* The string value for __REGISTER_PREFIX__ */
87 #ifndef REGISTER_PREFIX
88 #define REGISTER_PREFIX ""
91 /* This is the default list of directories to search for include files.
92 It may be overridden by the various -I and -ixxx options.
94 #include "file" looks in the same directory as the current file,
96 #include <file> just looks in this list.
98 All these directories are treated as `system' include directories
99 (they are not subject to pedantic warnings in some cases). */
101 struct default_include
103 const char *fname; /* The name of the directory. */
104 const char *component; /* The component containing the directory
105 (see update_path in prefix.c) */
106 int cplusplus; /* Only look here if we're compiling C++. */
107 int cxx_aware; /* Includes in this directory don't need to
108 be wrapped in extern "C" when compiling
112 #ifndef STANDARD_INCLUDE_COMPONENT
113 #define STANDARD_INCLUDE_COMPONENT 0
117 #undef LOCAL_INCLUDE_DIR
118 #undef SYSTEM_INCLUDE_DIR
119 #undef STANDARD_INCLUDE_DIR
121 #undef CROSS_INCLUDE_DIR
124 static const struct default_include include_defaults_array[]
125 #ifdef INCLUDE_DEFAULTS
129 #ifdef GPLUSPLUS_INCLUDE_DIR
130 /* Pick up GNU C++ specific include files. */
131 { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },
133 #ifdef LOCAL_INCLUDE_DIR
134 /* /usr/local/include comes before the fixincluded header files. */
135 { LOCAL_INCLUDE_DIR, 0, 0, 1 },
137 #ifdef GCC_INCLUDE_DIR
138 /* This is the dir for fixincludes and for gcc's private headers. */
139 { GCC_INCLUDE_DIR, "GCC", 0, 0 },
141 #ifdef CROSS_INCLUDE_DIR
142 /* One place the target system's headers might be. */
143 { CROSS_INCLUDE_DIR, "GCC", 0, 0 },
145 #ifdef TOOL_INCLUDE_DIR
146 /* Another place the target system's headers might be. */
147 { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1 },
149 #ifdef SYSTEM_INCLUDE_DIR
150 /* Some systems have an extra dir of include files. */
151 { SYSTEM_INCLUDE_DIR, 0, 0, 0 },
153 #ifdef STANDARD_INCLUDE_DIR
154 /* /usr/include comes dead last. */
155 { STANDARD_INCLUDE_DIR, STANDARD_INCLUDE_COMPONENT, 0, 0 },
159 #endif /* no INCLUDE_DEFAULTS */
161 /* Internal structures and prototypes. */
163 /* A `struct pending_option' remembers one -D, -A, -U, -include, or -imacros
164 switch. There are four lists: one for -D and -U, one for -A, one
165 for -include, one for -imacros. `undef' is set for -U, clear for
166 -D, ignored for the others.
167 (Future: add an equivalent of -U for -A) */
169 typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
170 struct pending_option
172 struct pending_option *next;
174 cl_directive_handler handler;
177 /* The `pending' structure accumulates all the options that are not
178 actually processed until we hit cpp_start_read. It consists of
179 several lists, one for each type of option. We keep both head and
180 tail pointers for quick insertion. */
183 struct pending_option *directive_head, *directive_tail;
185 struct file_name_list *quote_head, *quote_tail;
186 struct file_name_list *brack_head, *brack_tail;
187 struct file_name_list *systm_head, *systm_tail;
188 struct file_name_list *after_head, *after_tail;
190 struct pending_option *imacros_head, *imacros_tail;
191 struct pending_option *include_head, *include_tail;
195 #define APPEND(pend, list, elt) \
196 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
197 else (pend)->list##_tail->next = (elt); \
198 (pend)->list##_tail = (elt); \
201 #define APPEND(pend, list, elt) \
202 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
203 else (pend)->list/**/_tail->next = (elt); \
204 (pend)->list/**/_tail = (elt); \
208 static void print_help PARAMS ((void));
209 static void path_include PARAMS ((cpp_reader *,
210 struct cpp_pending *,
212 static void initialize_builtins PARAMS ((cpp_reader *));
213 static void append_include_chain PARAMS ((cpp_reader *,
214 struct cpp_pending *,
216 static void merge_include_chains PARAMS ((cpp_reader *));
218 static void dump_special_to_buffer PARAMS ((cpp_reader *, const 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, or C99) this table
234 can be initialized, constant data. Otherwise, it has to be filled
237 #if (GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)
238 #define init_IStable() /* nothing */
239 #define ISTABLE 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(' ') 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)
520 const char *macro_name;
522 static const char define_directive[] = "#define ";
523 int macro_name_length = strlen (macro_name);
524 _cpp_output_line_command (pfile, same_file);
525 CPP_RESERVE (pfile, sizeof(define_directive) + macro_name_length);
526 CPP_PUTS_Q (pfile, define_directive, sizeof(define_directive)-1);
527 CPP_PUTS_Q (pfile, macro_name, macro_name_length);
528 CPP_PUTC_Q (pfile, ' ');
529 cpp_expand_to_buffer (pfile, macro_name, macro_name_length);
530 CPP_PUTC (pfile, '\n');
533 /* Initialize a cpp_reader structure. */
535 cpp_reader_init (pfile)
538 memset ((char *) pfile, 0, sizeof (cpp_reader));
540 pfile->token_buffer_size = 200;
541 pfile->token_buffer = (U_CHAR *) xmalloc (pfile->token_buffer_size);
542 CPP_SET_WRITTEN (pfile, 0);
544 CPP_OPTION (pfile, dollars_in_ident) = 1;
545 CPP_OPTION (pfile, cplusplus_comments) = 1;
546 CPP_OPTION (pfile, warn_import) = 1;
547 CPP_OPTION (pfile, discard_comments) = 1;
548 CPP_OPTION (pfile, show_column) = 1;
550 CPP_OPTION (pfile, pending) =
551 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
553 _cpp_init_macro_hash (pfile);
554 _cpp_init_include_hash (pfile);
557 /* Free resources used by PFILE.
558 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
563 while (CPP_BUFFER (pfile) != NULL)
564 cpp_pop_buffer (pfile);
566 if (pfile->token_buffer)
568 free (pfile->token_buffer);
569 pfile->token_buffer = NULL;
572 if (pfile->input_buffer)
574 free (pfile->input_buffer);
575 free (pfile->input_speccase);
576 pfile->input_buffer = pfile->input_speccase = NULL;
577 pfile->input_buffer_len = 0;
581 deps_free (pfile->deps);
583 htab_delete (pfile->hashtab);
584 htab_delete (pfile->all_include_files);
588 /* This structure defines one built-in macro. A node of type TYPE will
589 be entered in the macro hash table under the name NAME, with value
590 VALUE (if any). FLAGS tweaks the behavior a little:
591 DUMP write debug info for this macro
592 STDC define only if not -traditional
593 ULP value is the global user_label_prefix (which can't be
594 put directly into the table).
602 unsigned short flags;
609 static const struct builtin builtin_array[] =
611 { "__TIME__", 0, T_TIME, DUMP },
612 { "__DATE__", 0, T_DATE, DUMP },
613 { "__FILE__", 0, T_FILE, 0 },
614 { "__BASE_FILE__", 0, T_BASE_FILE, 0 },
615 { "__LINE__", 0, T_SPECLINE, 0 },
616 { "__INCLUDE_LEVEL__", 0, T_INCLUDE_LEVEL, 0 },
617 { "__VERSION__", 0, T_VERSION, DUMP|VERS },
618 { "__STDC__", 0, T_STDC, DUMP|STDC },
620 { "__USER_LABEL_PREFIX__", 0, T_CONST, ULP },
621 { "__REGISTER_PREFIX__", REGISTER_PREFIX, T_CONST, 0 },
622 { "__HAVE_BUILTIN_SETJMP__", "1", T_CONST, 0 },
623 #ifndef NO_BUILTIN_SIZE_TYPE
624 { "__SIZE_TYPE__", SIZE_TYPE, T_CONST, DUMP },
626 #ifndef NO_BUILTIN_PTRDIFF_TYPE
627 { "__PTRDIFF_TYPE__", PTRDIFF_TYPE, T_CONST, DUMP },
629 #ifndef NO_BUILTIN_WCHAR_TYPE
630 { "__WCHAR_TYPE__", WCHAR_TYPE, T_CONST, DUMP },
635 /* Subroutine of cpp_start_read; reads the builtins table above and
636 enters the macros into the hash table. */
638 initialize_builtins (pfile)
642 const struct builtin *b;
645 for(b = builtin_array; b->name; b++)
647 if ((b->flags & STDC) && CPP_TRADITIONAL (pfile))
651 val = user_label_prefix;
652 else if (b->flags & VERS)
653 val = version_string;
657 len = strlen (b->name);
658 hp = _cpp_make_hashnode (b->name, len, b->type,
659 _cpp_calc_hash (b->name, len));
660 hp->value.cpval = val;
661 *(htab_find_slot (pfile->hashtab, (void *)hp, 1)) = hp;
663 if ((b->flags & DUMP) && CPP_OPTION (pfile, debug_output))
664 dump_special_to_buffer (pfile, b->name);
673 /* Another subroutine of cpp_start_read. This one sets up to do
674 dependency-file output. */
676 initialize_dependency_output (pfile)
679 char *spec, *s, *output_file;
681 /* Either of two environment variables can specify output of deps.
682 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
683 where OUTPUT_FILE is the file to write deps info to
684 and DEPS_TARGET is the target to mention in the deps. */
686 if (CPP_OPTION (pfile, print_deps) == 0)
688 spec = getenv ("DEPENDENCIES_OUTPUT");
690 CPP_OPTION (pfile, print_deps) = 1;
693 spec = getenv ("SUNPRO_DEPENDENCIES");
695 CPP_OPTION (pfile, print_deps) = 2;
700 /* Find the space before the DEPS_TARGET, if there is one. */
701 s = strchr (spec, ' ');
704 CPP_OPTION (pfile, deps_target) = s + 1;
705 output_file = (char *) xmalloc (s - spec + 1);
706 memcpy (output_file, spec, s - spec);
707 output_file[s - spec] = 0;
711 CPP_OPTION (pfile, deps_target) = 0;
715 CPP_OPTION (pfile, deps_file) = output_file;
716 CPP_OPTION (pfile, print_deps_append) = 1;
719 pfile->deps = deps_init ();
721 /* Print the expected object file name as the target of this Make-rule. */
722 if (CPP_OPTION (pfile, deps_target))
723 deps_add_target (pfile->deps, CPP_OPTION (pfile, deps_target));
724 else if (*CPP_OPTION (pfile, in_fname) == 0)
725 deps_add_target (pfile->deps, "-");
727 deps_calc_target (pfile->deps, CPP_OPTION (pfile, in_fname));
729 if (CPP_OPTION (pfile, in_fname))
730 deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
733 /* And another subroutine. This one sets up the standard include path. */
735 initialize_standard_includes (pfile)
739 const struct default_include *p;
740 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
742 /* Several environment variables may add to the include search path.
743 CPATH specifies an additional list of directories to be searched
744 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
745 etc. specify an additional list of directories to be searched as
746 if specified with -isystem, for the language indicated. */
748 GET_ENV_PATH_LIST (path, "CPATH");
749 if (path != 0 && *path != 0)
750 path_include (pfile, CPP_OPTION (pfile, pending), path, BRACKET);
752 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
755 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
758 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
761 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
764 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
767 if (path != 0 && *path != 0)
768 path_include (pfile, CPP_OPTION (pfile, pending), path, SYSTEM);
770 /* Search "translated" versions of GNU directories.
771 These have /usr/local/lib/gcc... replaced by specd_prefix. */
772 if (specd_prefix != 0)
774 char *default_prefix = alloca (sizeof GCC_INCLUDE_DIR - 7);
775 /* Remove the `include' from /usr/local/lib/gcc.../include.
776 GCC_INCLUDE_DIR will always end in /include. */
777 int default_len = sizeof GCC_INCLUDE_DIR - 8;
778 int specd_len = strlen (specd_prefix);
780 memcpy (default_prefix, GCC_INCLUDE_DIR, default_len);
781 default_prefix[default_len] = '\0';
783 for (p = include_defaults_array; p->fname; p++)
785 /* Some standard dirs are only for C++. */
787 || (CPP_OPTION (pfile, cplusplus)
788 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
790 /* Does this dir start with the prefix? */
791 if (!strncmp (p->fname, default_prefix, default_len))
793 /* Yes; change prefix and add to search list. */
794 int flen = strlen (p->fname);
795 int this_len = specd_len + flen - default_len;
796 char *str = (char *) xmalloc (this_len + 1);
797 memcpy (str, specd_prefix, specd_len);
798 memcpy (str + specd_len,
799 p->fname + default_len,
800 flen - default_len + 1);
802 append_include_chain (pfile, CPP_OPTION (pfile, pending),
803 str, SYSTEM, p->cxx_aware);
809 /* Search ordinary names for GNU include directories. */
810 for (p = include_defaults_array; p->fname; p++)
812 /* Some standard dirs are only for C++. */
814 || (CPP_OPTION (pfile, cplusplus)
815 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
817 /* XXX Potential memory leak! */
818 char *str = xstrdup (update_path (p->fname, p->component));
819 append_include_chain (pfile, CPP_OPTION (pfile, pending),
820 str, SYSTEM, p->cxx_aware);
825 /* This is called after options have been processed.
826 * Check options for consistency, and setup for processing input
827 * from the file named FNAME. (Use standard input if FNAME==NULL.)
828 * Return 1 on success, 0 on failure.
832 cpp_start_read (pfile, fname)
836 struct pending_option *p, *q;
838 /* -MG doesn't select the form of output and must be specified with one of
839 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
840 inhibit compilation. */
841 if (CPP_OPTION (pfile, print_deps_missing_files)
842 && (CPP_OPTION (pfile, print_deps) == 0
843 || !CPP_OPTION (pfile, no_output)))
845 cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
849 /* Chill should not be used with -trigraphs. */
850 if (CPP_OPTION (pfile, chill) && CPP_OPTION (pfile, trigraphs))
852 cpp_warning (pfile, "-lang-chill and -trigraphs are mutually exclusive");
853 CPP_OPTION (pfile, trigraphs) = 0;
856 /* Set this if it hasn't been set already. */
857 if (user_label_prefix == NULL)
858 user_label_prefix = USER_LABEL_PREFIX;
860 /* Don't bother trying to do macro expansion if we've already done
862 if (CPP_OPTION (pfile, preprocessed))
863 pfile->no_macro_expand++;
865 /* Set up the IStable. This doesn't do anything if we were compiled
866 with a compiler that supports C99 designated initializers. */
869 /* Set up the tables used by read_and_prescan. */
870 _cpp_init_input_buffer (pfile);
872 /* Set up the include search path now. */
873 if (! CPP_OPTION (pfile, no_standard_includes))
874 initialize_standard_includes (pfile);
876 merge_include_chains (pfile);
878 /* With -v, print the list of dirs to search. */
879 if (CPP_OPTION (pfile, verbose))
881 struct file_name_list *l;
882 fprintf (stderr, _("#include \"...\" search starts here:\n"));
883 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
885 if (l == CPP_OPTION (pfile, bracket_include))
886 fprintf (stderr, _("#include <...> search starts here:\n"));
887 fprintf (stderr, " %s\n", l->name);
889 fprintf (stderr, _("End of search list.\n"));
892 /* Open the main input file. This must be done early, so we have a
893 buffer to stand on. */
894 if (CPP_OPTION (pfile, in_fname) == NULL
895 || *CPP_OPTION (pfile, in_fname) == 0)
897 CPP_OPTION (pfile, in_fname) = fname;
898 if (CPP_OPTION (pfile, in_fname) == NULL)
899 CPP_OPTION (pfile, in_fname) = "";
901 if (CPP_OPTION (pfile, out_fname) == NULL)
902 CPP_OPTION (pfile, out_fname) = "";
904 if (!cpp_read_file (pfile, fname))
907 initialize_dependency_output (pfile);
909 /* -D and friends may produce output, which should be identified
912 CPP_BUFFER (pfile)->lineno = 0;
914 /* Install __LINE__, etc. */
915 initialize_builtins (pfile);
917 /* Do -U's, -D's and -A's in the order they were seen. */
918 p = CPP_OPTION (pfile, pending)->directive_head;
921 (*p->handler) (pfile, p->arg);
927 pfile->done_initializing = 1;
928 CPP_BUFFER (pfile)->lineno = 1;
930 if (CPP_OPTION (pfile, preprocessed))
931 /* If we've already processed this code, we want to trust the #line
932 directives in the input. But we still need to update our line
933 counter accordingly. */
934 pfile->lineno = CPP_BUFFER (pfile)->lineno;
936 _cpp_output_line_command (pfile, same_file);
937 pfile->only_seen_white = 2;
939 /* The -imacros files can be scanned now, but the -include files
940 have to be pushed onto the include stack and processed later,
941 in the main loop calling cpp_get_token. */
943 CPP_OPTION (pfile, no_output)++;
944 p = CPP_OPTION (pfile, pending)->imacros_head;
947 if (cpp_read_file (pfile, p->arg))
948 cpp_scan_buffer (pfile);
954 CPP_OPTION (pfile, no_output)--;
956 p = CPP_OPTION (pfile, pending)->include_head;
959 if (cpp_read_file (pfile, p->arg))
960 _cpp_output_line_command (pfile, enter_file);
967 free (CPP_OPTION (pfile, pending));
968 CPP_OPTION (pfile, pending) = NULL;
973 /* This is called at the end of preprocessing. It pops the
974 last buffer and writes dependency output. It should also
975 clear macro definitions, such that you could call cpp_start_read
976 with a new filename to restart processing. */
981 if (CPP_PREV_BUFFER (CPP_BUFFER (pfile)))
982 cpp_ice (pfile, "buffers still stacked in cpp_finish");
983 while (CPP_BUFFER (pfile))
984 cpp_pop_buffer (pfile);
986 /* Don't write the deps file if preprocessing has failed. */
987 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
989 /* Stream on which to print the dependency information. */
990 FILE *deps_stream = 0;
991 const char *deps_mode
992 = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
993 if (CPP_OPTION (pfile, deps_file) == 0)
994 deps_stream = stdout;
997 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
998 if (deps_stream == 0)
999 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
1003 deps_write (pfile->deps, deps_stream, 72);
1004 if (CPP_OPTION (pfile, deps_file))
1006 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1007 cpp_fatal (pfile, "I/O error on output");
1012 if (CPP_OPTION (pfile, dump_macros) == dump_only)
1013 _cpp_dump_macro_hash (pfile);
1017 new_pending_directive (pend, text, handler)
1018 struct cpp_pending *pend;
1020 cl_directive_handler handler;
1022 struct pending_option *o = (struct pending_option *)
1023 xmalloc (sizeof (struct pending_option));
1027 o->handler = handler;
1028 APPEND (pend, directive, o);
1031 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1032 I.e. a const string initializer with parens around it. That is
1033 what N_("string") resolves to, so we make no_* be macros instead. */
1034 #define no_arg N_("Argument missing after %s")
1035 #define no_ass N_("Assertion missing after %s")
1036 #define no_dir N_("Directory name missing after %s")
1037 #define no_fil N_("File name missing after %s")
1038 #define no_mac N_("Macro name missing after %s")
1039 #define no_pth N_("Path name missing after %s")
1041 /* This is the list of all command line options, with the leading
1042 "-" removed. It must be sorted in ASCII collating order. */
1043 #define COMMAND_LINE_OPTIONS \
1044 DEF_OPT("", 0, OPT_stdin_stdout) \
1045 DEF_OPT("$", 0, OPT_dollar) \
1046 DEF_OPT("+", 0, OPT_plus) \
1047 DEF_OPT("-help", 0, OPT__help) \
1048 DEF_OPT("-version", 0, OPT__version) \
1049 DEF_OPT("A", no_ass, OPT_A) \
1050 DEF_OPT("C", 0, OPT_C) \
1051 DEF_OPT("D", no_mac, OPT_D) \
1052 DEF_OPT("H", 0, OPT_H) \
1053 DEF_OPT("I", no_dir, OPT_I) \
1054 DEF_OPT("M", 0, OPT_M) \
1055 DEF_OPT("MD", no_fil, OPT_MD) \
1056 DEF_OPT("MG", 0, OPT_MG) \
1057 DEF_OPT("MM", 0, OPT_MM) \
1058 DEF_OPT("MMD", no_fil, OPT_MMD) \
1059 DEF_OPT("P", 0, OPT_P) \
1060 DEF_OPT("U", no_mac, OPT_U) \
1061 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1062 DEF_OPT("d", no_arg, OPT_d) \
1063 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1064 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1065 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1066 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1067 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1068 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1069 DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
1070 DEF_OPT("h", 0, OPT_h) \
1071 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1072 DEF_OPT("imacros", no_fil, OPT_imacros) \
1073 DEF_OPT("include", no_fil, OPT_include) \
1074 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1075 DEF_OPT("isystem", no_dir, OPT_isystem) \
1076 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1077 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1078 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1079 DEF_OPT("lang-c", 0, OPT_lang_c) \
1080 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1081 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1082 DEF_OPT("lang-chill", 0, OPT_lang_chill) \
1083 DEF_OPT("lang-fortran", 0, OPT_lang_fortran) \
1084 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1085 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1086 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1087 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1088 DEF_OPT("o", no_fil, OPT_o) \
1089 DEF_OPT("pedantic", 0, OPT_pedantic) \
1090 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1091 DEF_OPT("remap", 0, OPT_remap) \
1092 DEF_OPT("std=c89", 0, OPT_std_c89) \
1093 DEF_OPT("std=c99", 0, OPT_std_c99) \
1094 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1095 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1096 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1097 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1098 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1099 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1100 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1101 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1102 DEF_OPT("traditional", 0, OPT_traditional) \
1103 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1104 DEF_OPT("v", 0, OPT_v) \
1105 DEF_OPT("w", 0, OPT_w)
1107 #define DEF_OPT(text, msg, code) code,
1110 COMMAND_LINE_OPTIONS
1117 const char *opt_text;
1120 enum opt_code opt_code;
1123 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1125 static struct cl_option cl_options[] =
1127 static const struct cl_option cl_options[] =
1130 COMMAND_LINE_OPTIONS
1133 #undef COMMAND_LINE_OPTIONS
1135 /* Perform a binary search to find which, if any, option the given
1136 command-line matches. Returns its index in the option array,
1137 negative on failure. Complications arise since some options can be
1138 suffixed with an argument, and multiple complete matches can occur,
1139 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1140 accept options beginning with -g and -W that we do not recognise,
1141 but not to swallow any subsequent command line argument; these are
1142 handled as special cases in cpp_handle_option */
1144 parse_option (input)
1147 unsigned int md, mn, mx;
1158 opt_len = cl_options[md].opt_len;
1159 comp = strncmp (input, cl_options[md].opt_text, opt_len);
1167 if (input[opt_len] == '\0')
1169 /* We were passed more text. If the option takes an argument,
1170 we may match a later option or we may have been passed the
1171 argument. The longest possible option match succeeds.
1172 If the option takes no arguments we have not matched and
1173 continue the search (e.g. input="stdc++" match was "stdc") */
1175 if (cl_options[md].msg)
1177 /* Scan forwards. If we get an exact match, return it.
1178 Otherwise, return the longest option-accepting match.
1179 This loops no more than twice with current options */
1181 for (; mn < N_OPTS; mn++)
1183 opt_len = cl_options[mn].opt_len;
1184 if (strncmp (input, cl_options[mn].opt_text, opt_len))
1186 if (input[opt_len] == '\0')
1188 if (cl_options[mn].msg)
1199 /* Handle one command-line option in (argc, argv).
1200 Can be called multiple times, to handle multiple sets of options.
1201 Returns number of strings consumed. */
1204 handle_option (pfile, argc, argv)
1211 if (argv[i][0] != '-')
1213 if (CPP_OPTION (pfile, out_fname) != NULL)
1214 cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
1216 else if (CPP_OPTION (pfile, in_fname) != NULL)
1217 CPP_OPTION (pfile, out_fname) = argv[i];
1219 CPP_OPTION (pfile, in_fname) = argv[i];
1223 enum opt_code opt_code;
1225 const char *arg = 0;
1228 opt_index = parse_option (&argv[i][1]);
1232 opt_code = cl_options[opt_index].opt_code;
1233 if (cl_options[opt_index].msg)
1235 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1237 /* Yuk. Special case for -g and -W as they must not swallow
1238 up any following argument. If this becomes common, add
1239 another field to the cl_options table */
1240 if (arg[0] == '\0' && !(opt_code == OPT_g || opt_code == OPT_W))
1245 cpp_fatal (pfile, _(cl_options[opt_index].msg), argv[i - 1]);
1253 case N_OPTS: /* shut GCC up */
1255 case OPT_fleading_underscore:
1256 user_label_prefix = "_";
1258 case OPT_fno_leading_underscore:
1259 user_label_prefix = "";
1261 case OPT_fpreprocessed:
1262 CPP_OPTION (pfile, preprocessed) = 1;
1264 case OPT_fno_preprocessed:
1265 CPP_OPTION (pfile, preprocessed) = 0;
1267 case OPT_fshow_column:
1268 CPP_OPTION (pfile, show_column) = 1;
1270 case OPT_fno_show_column:
1271 CPP_OPTION (pfile, show_column) = 0;
1274 CPP_OPTION (pfile, inhibit_warnings) = 1;
1276 case OPT_g: /* Silently ignore anything but -g3 */
1277 if (!strcmp(&argv[i][2], "3"))
1278 CPP_OPTION (pfile, debug_output) = 1;
1286 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1290 CPP_OPTION (pfile, discard_comments) = 0;
1293 CPP_OPTION (pfile, no_line_commands) = 1;
1295 case OPT_dollar: /* Don't include $ in identifiers. */
1296 CPP_OPTION (pfile, dollars_in_ident) = 0;
1299 CPP_OPTION (pfile, print_include_names) = 1;
1302 new_pending_directive (CPP_OPTION (pfile, pending), arg, cpp_define);
1304 case OPT_pedantic_errors:
1305 CPP_OPTION (pfile, pedantic_errors) = 1;
1308 CPP_OPTION (pfile, pedantic) = 1;
1310 case OPT_traditional:
1311 CPP_OPTION (pfile, traditional) = 1;
1312 CPP_OPTION (pfile, cplusplus_comments) = 0;
1313 CPP_OPTION (pfile, trigraphs) = 0;
1314 CPP_OPTION (pfile, warn_trigraphs) = 0;
1317 CPP_OPTION (pfile, trigraphs) = 1;
1320 CPP_OPTION (pfile, cplusplus) = 1;
1321 CPP_OPTION (pfile, cplusplus_comments) = 1;
1324 CPP_OPTION (pfile, remap) = 1;
1327 CPP_OPTION (pfile, include_prefix) = arg;
1328 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1331 CPP_OPTION (pfile, cplusplus) = 0;
1332 CPP_OPTION (pfile, cplusplus_comments) = 1;
1333 CPP_OPTION (pfile, c89) = 0;
1334 CPP_OPTION (pfile, c99) = 1;
1335 CPP_OPTION (pfile, objc) = 0;
1338 CPP_OPTION (pfile, cplusplus) = 0;
1339 CPP_OPTION (pfile, cplusplus_comments) = 0;
1340 CPP_OPTION (pfile, c89) = 1;
1341 CPP_OPTION (pfile, c99) = 0;
1342 CPP_OPTION (pfile, objc) = 0;
1343 CPP_OPTION (pfile, trigraphs) = 1;
1344 new_pending_directive (CPP_OPTION (pfile, pending),
1345 "__STRICT_ANSI__", cpp_define);
1347 case OPT_lang_cplusplus:
1348 CPP_OPTION (pfile, cplusplus) = 1;
1349 CPP_OPTION (pfile, cplusplus_comments) = 1;
1350 CPP_OPTION (pfile, c89) = 0;
1351 CPP_OPTION (pfile, c99) = 0;
1352 CPP_OPTION (pfile, objc) = 0;
1355 case OPT_lang_objcplusplus:
1356 CPP_OPTION (pfile, cplusplus) = opt_code == OPT_lang_objcplusplus;
1357 CPP_OPTION (pfile, cplusplus_comments) = 1;
1358 CPP_OPTION (pfile, c89) = 0;
1359 CPP_OPTION (pfile, c99) = 0;
1360 CPP_OPTION (pfile, objc) = 1;
1363 CPP_OPTION (pfile, lang_asm) = 1;
1365 case OPT_lang_fortran:
1366 CPP_OPTION (pfile, lang_fortran) = 1;
1367 CPP_OPTION (pfile, cplusplus_comments) = 0;
1369 case OPT_lang_chill:
1370 CPP_OPTION (pfile, objc) = 0;
1371 CPP_OPTION (pfile, cplusplus) = 0;
1372 CPP_OPTION (pfile, chill) = 1;
1373 CPP_OPTION (pfile, traditional) = 1;
1376 /* -nostdinc causes no default include directories.
1377 You must specify all include-file directories with -I. */
1378 CPP_OPTION (pfile, no_standard_includes) = 1;
1380 case OPT_nostdincplusplus:
1381 /* -nostdinc++ causes no default C++-specific include directories. */
1382 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1385 CPP_OPTION (pfile, cplusplus) = 0;
1386 CPP_OPTION (pfile, cplusplus_comments) = 1;
1387 CPP_OPTION (pfile, c89) = 1;
1388 CPP_OPTION (pfile, c99) = 0;
1389 CPP_OPTION (pfile, objc) = 0;
1393 CPP_OPTION (pfile, cplusplus) = 0;
1394 CPP_OPTION (pfile, cplusplus_comments) = 1;
1395 CPP_OPTION (pfile, c89) = 0;
1396 CPP_OPTION (pfile, c99) = 1;
1397 CPP_OPTION (pfile, objc) = 0;
1398 new_pending_directive (CPP_OPTION (pfile, pending),
1399 "__STDC_VERSION__=199901L", cpp_define);
1401 case OPT_std_iso9899_199409:
1402 new_pending_directive (CPP_OPTION (pfile, pending),
1403 "__STDC_VERSION__=199409L", cpp_define);
1405 case OPT_std_iso9899_1990:
1407 CPP_OPTION (pfile, cplusplus) = 0;
1408 CPP_OPTION (pfile, cplusplus_comments) = 0;
1409 CPP_OPTION (pfile, c89) = 1;
1410 CPP_OPTION (pfile, c99) = 0;
1411 CPP_OPTION (pfile, objc) = 0;
1412 CPP_OPTION (pfile, trigraphs) = 1;
1413 new_pending_directive (CPP_OPTION (pfile, pending),
1414 "__STRICT_ANSI__", cpp_define);
1416 case OPT_std_iso9899_199x:
1417 case OPT_std_iso9899_1999:
1420 CPP_OPTION (pfile, cplusplus) = 0;
1421 CPP_OPTION (pfile, cplusplus_comments) = 1;
1422 CPP_OPTION (pfile, c89) = 0;
1423 CPP_OPTION (pfile, c99) = 1;
1424 CPP_OPTION (pfile, objc) = 0;
1425 CPP_OPTION (pfile, trigraphs) = 1;
1426 new_pending_directive (CPP_OPTION (pfile, pending),
1427 "__STRICT_ANSI__", cpp_define);
1428 new_pending_directive (CPP_OPTION (pfile, pending),
1429 "__STDC_VERSION__=199901L", cpp_define);
1432 if (CPP_OPTION (pfile, out_fname) != NULL)
1434 cpp_fatal (pfile, "Output filename specified twice");
1437 CPP_OPTION (pfile, out_fname) = arg;
1438 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1439 CPP_OPTION (pfile, out_fname) = "";
1442 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1443 #ifdef TARGET_VERSION
1446 fputc ('\n', stderr);
1447 CPP_OPTION (pfile, verbose) = 1;
1449 case OPT_stdin_stdout:
1450 /* JF handle '-' as file name meaning stdin or stdout */
1451 if (CPP_OPTION (pfile, in_fname) == NULL)
1452 CPP_OPTION (pfile, in_fname) = "";
1453 else if (CPP_OPTION (pfile, out_fname) == NULL)
1454 CPP_OPTION (pfile, out_fname) = "";
1457 /* Args to -d specify what parts of macros to dump.
1458 Silently ignore unrecognised options; they may
1459 be aimed at the compiler proper. */
1463 while ((c = *arg++) != '\0')
1467 CPP_OPTION (pfile, dump_macros) = dump_only;
1468 CPP_OPTION (pfile, no_output) = 1;
1471 CPP_OPTION (pfile, dump_macros) = dump_names;
1474 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1477 CPP_OPTION (pfile, dump_includes) = 1;
1482 /* The style of the choices here is a bit mixed.
1483 The chosen scheme is a hybrid of keeping all options in one string
1484 and specifying each option in a separate argument:
1485 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1486 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1487 -M[M][G][D file]. This is awkward to handle in specs, and is not
1489 /* ??? -MG must be specified in addition to one of -M or -MM.
1490 This can be relaxed in the future without breaking anything.
1491 The converse isn't true. */
1493 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1495 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1501 if (opt_code == OPT_M || opt_code == OPT_MD)
1502 CPP_OPTION (pfile, print_deps) = 2;
1504 CPP_OPTION (pfile, print_deps) = 1;
1506 /* For -MD and -MMD options, write deps on file named by next arg */
1507 /* For -M and -MM, write deps on standard output
1508 and suppress the usual output. */
1509 if (opt_code == OPT_MD || opt_code == OPT_MMD)
1510 CPP_OPTION (pfile, deps_file) = arg;
1512 CPP_OPTION (pfile, no_output) = 1;
1517 /* -A with an argument beginning with '-' acts as
1518 #unassert on whatever immediately follows the '-'.
1519 If "-" is the whole argument, we eliminate all
1520 predefined macros and assertions, including those
1521 that were specified earlier on the command line.
1522 That way we can get rid of any that were passed
1523 automatically in from GCC. */
1527 struct pending_option *o1, *o2;
1529 o1 = CPP_OPTION (pfile, pending)->directive_head;
1536 CPP_OPTION (pfile, pending)->directive_head = NULL;
1537 CPP_OPTION (pfile, pending)->directive_tail = NULL;
1540 new_pending_directive (CPP_OPTION (pfile, pending),
1541 arg + 1, cpp_unassert);
1544 new_pending_directive (CPP_OPTION (pfile, pending),
1548 new_pending_directive (CPP_OPTION (pfile, pending), arg, cpp_undef);
1550 case OPT_I: /* Add directory to path for includes. */
1551 if (!strcmp (arg, "-"))
1554 Use the preceding -I directories for #include "..."
1555 but not #include <...>.
1556 Don't search the directory of the present file
1557 for #include "...". (Note that -I. -I- is not the same as
1558 the default setup; -I. uses the compiler's working dir.) */
1559 if (! CPP_OPTION (pfile, ignore_srcdir))
1561 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1562 pend->quote_head = pend->brack_head;
1563 pend->quote_tail = pend->brack_tail;
1564 pend->brack_head = 0;
1565 pend->brack_tail = 0;
1566 CPP_OPTION (pfile, ignore_srcdir) = 1;
1570 cpp_fatal (pfile, "-I- specified twice");
1575 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1576 xstrdup (arg), BRACKET, 0);
1579 /* Add directory to beginning of system include path, as a system
1580 include directory. */
1581 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1582 xstrdup (arg), SYSTEM, 0);
1586 struct pending_option *o = (struct pending_option *)
1587 xmalloc (sizeof (struct pending_option));
1590 /* This list has to be built in reverse order so that
1591 when cpp_start_read pushes all the -include files onto
1592 the buffer stack, they will be scanned in forward order. */
1593 o->next = CPP_OPTION (pfile, pending)->include_head;
1594 CPP_OPTION (pfile, pending)->include_head = o;
1599 struct pending_option *o = (struct pending_option *)
1600 xmalloc (sizeof (struct pending_option));
1604 APPEND (CPP_OPTION (pfile, pending), imacros, o);
1607 case OPT_iwithprefix:
1608 /* Add directory to end of path for includes,
1609 with the default prefix at the front of its name. */
1611 case OPT_iwithprefixbefore:
1612 /* Add directory to main path for includes,
1613 with the default prefix at the front of its name. */
1620 if (CPP_OPTION (pfile, include_prefix) != 0)
1622 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1623 fname = xmalloc (ipl + len + 1);
1624 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1625 memcpy (fname + ipl, arg, len + 1);
1629 fname = xmalloc (sizeof GCC_INCLUDE_DIR - 8 + len);
1630 memcpy (fname, GCC_INCLUDE_DIR, sizeof GCC_INCLUDE_DIR - 9);
1631 memcpy (fname + sizeof GCC_INCLUDE_DIR - 9, arg, len + 1);
1634 append_include_chain (pfile, CPP_OPTION (pfile, pending), fname,
1635 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1639 /* Add directory to end of path for includes. */
1640 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1641 xstrdup (arg), AFTER, 0);
1644 /* Silently ignore unrecognised options */
1645 if (!strcmp (argv[i], "-Wall"))
1647 CPP_OPTION (pfile, warn_trigraphs) = 1;
1648 CPP_OPTION (pfile, warn_comments) = 1;
1650 else if (!strcmp (argv[i], "-Wtraditional"))
1651 CPP_OPTION (pfile, warn_stringify) = 1;
1652 else if (!strcmp (argv[i], "-Wtrigraphs"))
1653 CPP_OPTION (pfile, warn_trigraphs) = 1;
1654 else if (!strcmp (argv[i], "-Wcomment"))
1655 CPP_OPTION (pfile, warn_comments) = 1;
1656 else if (!strcmp (argv[i], "-Wcomments"))
1657 CPP_OPTION (pfile, warn_comments) = 1;
1658 else if (!strcmp (argv[i], "-Wundef"))
1659 CPP_OPTION (pfile, warn_undef) = 1;
1660 else if (!strcmp (argv[i], "-Wimport"))
1661 CPP_OPTION (pfile, warn_import) = 1;
1662 else if (!strcmp (argv[i], "-Werror"))
1663 CPP_OPTION (pfile, warnings_are_errors) = 1;
1664 else if (!strcmp (argv[i], "-Wno-traditional"))
1665 CPP_OPTION (pfile, warn_stringify) = 0;
1666 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1667 CPP_OPTION (pfile, warn_trigraphs) = 0;
1668 else if (!strcmp (argv[i], "-Wno-comment"))
1669 CPP_OPTION (pfile, warn_comments) = 0;
1670 else if (!strcmp (argv[i], "-Wno-comments"))
1671 CPP_OPTION (pfile, warn_comments) = 0;
1672 else if (!strcmp (argv[i], "-Wno-undef"))
1673 CPP_OPTION (pfile, warn_undef) = 0;
1674 else if (!strcmp (argv[i], "-Wno-import"))
1675 CPP_OPTION (pfile, warn_import) = 0;
1676 else if (!strcmp (argv[i], "-Wno-error"))
1677 CPP_OPTION (pfile, warnings_are_errors) = 0;
1686 opt_comp (const void *p1, const void *p2)
1688 return strcmp (((struct cl_option *)p1)->opt_text,
1689 ((struct cl_option *)p2)->opt_text);
1693 /* Handle command-line options in (argc, argv).
1694 Can be called multiple times, to handle multiple sets of options.
1695 Returns if an unrecognized option is seen.
1696 Returns number of strings consumed. */
1698 cpp_handle_options (pfile, argc, argv)
1704 int strings_processed;
1707 static int opts_sorted = 0;
1712 /* For non-ASCII hosts, the array needs to be sorted at runtime */
1713 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
1717 for (i = 0; i < argc; i += strings_processed)
1719 strings_processed = handle_option (pfile, argc - i, argv + i);
1720 if (strings_processed == 0)
1729 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1732 -include <file> Include the contents of <file> before other files\n\
1733 -imacros <file> Accept definition of macros in <file>\n\
1734 -iprefix <path> Specify <path> as a prefix for next two options\n\
1735 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1736 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1737 -isystem <dir> Add <dir> to the start of the system include path\n\
1738 -idirafter <dir> Add <dir> to the end of the system include path\n\
1739 -I <dir> Add <dir> to the end of the main include path\n\
1740 -I- Fine-grained include path control; see info docs\n\
1741 -nostdinc Do not search system include directories\n\
1742 (dirs specified with -isystem will still be used)\n\
1743 -nostdinc++ Do not search system include directories for C++\n\
1744 -o <file> Put output into <file>\n\
1745 -pedantic Issue all warnings demanded by strict ANSI C\n\
1746 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1747 -traditional Follow K&R pre-processor behaviour\n\
1748 -trigraphs Support ANSI C trigraphs\n\
1749 -lang-c Assume that the input sources are in C\n\
1750 -lang-c89 Assume that the input sources are in C89\n\
1751 -lang-c++ Assume that the input sources are in C++\n\
1752 -lang-objc Assume that the input sources are in ObjectiveC\n\
1753 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1754 -lang-asm Assume that the input sources are in assembler\n\
1755 -lang-fortran Assume that the input sources are in Fortran\n\
1756 -lang-chill Assume that the input sources are in Chill\n\
1757 -std=<std name> Specify the conformance standard; one of:\n\
1758 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1759 iso9899:199409, iso9899:1999\n\
1760 -+ Allow parsing of C++ style features\n\
1761 -w Inhibit warning messages\n\
1762 -Wtrigraphs Warn if trigraphs are encountered\n\
1763 -Wno-trigraphs Do not warn about trigraphs\n\
1764 -Wcomment{s} Warn if one comment starts inside another\n\
1765 -Wno-comment{s} Do not warn about comments\n\
1766 -Wtraditional Warn if a macro argument is/would be turned into\n\
1767 a string if -traditional is specified\n\
1768 -Wno-traditional Do not warn about stringification\n\
1769 -Wundef Warn if an undefined macro is used by #if\n\
1770 -Wno-undef Do not warn about testing undefined macros\n\
1771 -Wimport Warn about the use of the #import directive\n\
1772 -Wno-import Do not warn about the use of #import\n\
1773 -Werror Treat all warnings as errors\n\
1774 -Wno-error Do not treat warnings as errors\n\
1775 -Wall Enable all preprocessor warnings\n\
1776 -M Generate make dependencies\n\
1777 -MM As -M, but ignore system header files\n\
1778 -MD As -M, but put output in a .d file\n\
1779 -MMD As -MD, but ignore system header files\n\
1780 -MG Treat missing header file as generated files\n\
1781 -g3 Include #define and #undef directives in the output\n\
1782 -D<macro> Define a <macro> with string '1' as its value\n\
1783 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1784 -A<question> (<answer>) Assert the <answer> to <question>\n\
1785 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1786 -U<macro> Undefine <macro> \n\
1787 -v Display the version number\n\
1788 -H Print the name of header files as they are used\n\
1789 -C Do not discard comments\n\
1790 -dM Display a list of macro definitions active at end\n\
1791 -dD Preserve macro definitions in output\n\
1792 -dN As -dD except that only the names are preserved\n\
1793 -dI Include #include directives in the output\n\
1794 -P Do not generate #line directives\n\
1795 -$ Do not allow '$' in identifiers\n\
1796 -remap Remap file names when including files.\n\
1797 --version Display version information\n\
1798 -h or --help Display this information\n\