2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000 Free Software Foundation, Inc.
4 Contributed by Per Bothner, 1994-95.
5 Based on CCCP program by Paul Rubin, June 1986
6 Adapted to ANSI C, Richard Stallman, Jan 1987
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 #include "cppdefault.h"
33 /* Predefined symbols, built-in macros, and the default include path. */
35 #ifndef GET_ENV_PATH_LIST
36 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
39 /* Windows does not natively support inodes, and neither does MSDOS.
40 Cygwin's emulation can generate non-unique inodes, so don't use it.
41 VMS has non-numeric inodes. */
43 #define INO_T_EQ(a, b) (!memcmp (&(a), &(b), sizeof (a)))
44 #elif (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
45 #define INO_T_EQ(a, b) 0
47 #define INO_T_EQ(a, b) ((a) == (b))
50 /* Internal structures and prototypes. */
52 /* A `struct pending_option' remembers one -D, -A, -U, -include, or -imacros
53 switch. There are four lists: one for -D and -U, one for -A, one
54 for -include, one for -imacros. `undef' is set for -U, clear for
55 -D, ignored for the others.
56 (Future: add an equivalent of -U for -A) */
58 typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
61 struct pending_option *next;
63 cl_directive_handler handler;
66 /* The `pending' structure accumulates all the options that are not
67 actually processed until we hit cpp_start_read. It consists of
68 several lists, one for each type of option. We keep both head and
69 tail pointers for quick insertion. */
72 struct pending_option *directive_head, *directive_tail;
74 struct file_name_list *quote_head, *quote_tail;
75 struct file_name_list *brack_head, *brack_tail;
76 struct file_name_list *systm_head, *systm_tail;
77 struct file_name_list *after_head, *after_tail;
79 struct pending_option *imacros_head, *imacros_tail;
80 struct pending_option *include_head, *include_tail;
84 #define APPEND(pend, list, elt) \
85 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
86 else (pend)->list##_tail->next = (elt); \
87 (pend)->list##_tail = (elt); \
90 #define APPEND(pend, list, elt) \
91 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
92 else (pend)->list/**/_tail->next = (elt); \
93 (pend)->list/**/_tail = (elt); \
97 static void print_help PARAMS ((void));
98 static void path_include PARAMS ((cpp_reader *,
100 static void initialize_builtins PARAMS ((cpp_reader *));
101 static void append_include_chain PARAMS ((cpp_reader *,
103 struct file_name_list * remove_dup_dir PARAMS ((cpp_reader *,
104 struct file_name_list *));
105 struct file_name_list * remove_dup_dirs PARAMS ((cpp_reader *,
106 struct file_name_list *));
107 static void merge_include_chains PARAMS ((cpp_reader *));
109 static void initialize_dependency_output PARAMS ((cpp_reader *));
110 static void initialize_standard_includes PARAMS ((cpp_reader *));
111 static void new_pending_directive PARAMS ((struct cpp_pending *,
113 cl_directive_handler));
115 static int opt_comp PARAMS ((const void *, const void *));
117 static int parse_option PARAMS ((const char *));
119 /* Fourth argument to append_include_chain: chain to use */
120 enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };
122 /* If we have designated initializers (GCC >2.7) these tables can be
123 initialized, constant data. Otherwise, they have to be filled in at
125 #if HAVE_DESIGNATED_INITIALIZERS
127 #define init_IStable() /* nothing */
128 #define ISTABLE __extension__ const U_CHAR _cpp_IStable[UCHAR_MAX + 1] = {
130 #define init_trigraph_map() /* nothing */
131 #define TRIGRAPH_MAP \
132 __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = {
135 #define s(p, v) [p] = v,
139 #define ISTABLE unsigned char _cpp_IStable[UCHAR_MAX + 1] = { 0 }; \
140 static void init_IStable PARAMS ((void)) { \
141 unsigned char *x = _cpp_IStable;
143 #define TRIGRAPH_MAP U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
144 static void init_trigraph_map PARAMS ((void)) { \
145 unsigned char *x = _cpp_trigraph_map;
148 #define s(p, v) x[p] = v;
152 #define A(x) s(x, ISidnum|ISidstart)
153 #define N(x) s(x, ISidnum|ISnumstart)
154 #define H(x) s(x, IShspace|ISspace)
155 #define V(x) s(x, ISvspace|ISspace)
156 #define S(x) s(x, ISspace)
161 A('a') A('b') A('c') A('d') A('e') A('f') A('g') A('h') A('i')
162 A('j') A('k') A('l') A('m') A('n') A('o') A('p') A('q') A('r')
163 A('s') A('t') A('u') A('v') A('w') A('x') A('y') A('z')
165 A('A') A('B') A('C') A('D') A('E') A('F') A('G') A('H') A('I')
166 A('J') A('K') A('L') A('M') A('N') A('O') A('P') A('Q') A('R')
167 A('S') A('T') A('U') A('V') A('W') A('X') A('Y') A('Z')
169 N('1') N('2') N('3') N('4') N('5') N('6') N('7') N('8') N('9') N('0')
175 S('\0') S('\v') S('\f')
179 s('=', '#') s(')', ']') s('!', '|')
180 s('(', '[') s('\'', '^') s('>', '}')
181 s('/', '\\') s('<', '{') s('-', '~')
194 /* Given a colon-separated list of file names PATH,
195 add all the names to the search path for include files. */
198 path_include (pfile, list, path)
209 /* Find the end of this name. */
211 while (*q != 0 && *q != PATH_SEPARATOR) q++;
214 /* An empty name in the path stands for the current directory. */
215 name = (char *) xmalloc (2);
221 /* Otherwise use the directory that is named. */
222 name = (char *) xmalloc (q - p + 1);
223 memcpy (name, p, q - p);
227 append_include_chain (pfile, name, path, 0);
229 /* Advance past this name. */
237 /* Append DIR to include path PATH. DIR must be permanently allocated
240 append_include_chain (pfile, dir, path, cxx_aware)
246 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
247 struct file_name_list *new;
251 _cpp_simplify_pathname (dir);
254 /* Dirs that don't exist are silently ignored. */
256 cpp_notice_from_errno (pfile, dir);
257 else if (CPP_OPTION (pfile, verbose))
258 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
262 if (!S_ISDIR (st.st_mode))
264 cpp_notice (pfile, "%s: Not a directory", dir);
269 if (len > pfile->max_include_len)
270 pfile->max_include_len = len;
272 new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
275 new->ino = st.st_ino;
276 new->dev = st.st_dev;
278 new->sysp = cxx_aware ? 1 : 2;
281 new->name_map = NULL;
287 case QUOTE: APPEND (pend, quote, new); break;
288 case BRACKET: APPEND (pend, brack, new); break;
289 case SYSTEM: APPEND (pend, systm, new); break;
290 case AFTER: APPEND (pend, after, new); break;
294 /* Handle a duplicated include path. PREV is the link in the chain
295 before the duplicate. The duplicate is removed from the chain and
296 freed. Returns PREV. */
297 struct file_name_list *
298 remove_dup_dir (pfile, prev)
300 struct file_name_list *prev;
302 struct file_name_list *cur = prev->next;
304 if (CPP_OPTION (pfile, verbose))
305 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
307 prev->next = cur->next;
314 /* Remove duplicate directories from a chain. Returns the tail of the
315 chain, or NULL if the chain is empty. This algorithm is quadratic
316 in the number of -I switches, which is acceptable since there
317 aren't usually that many of them. */
318 struct file_name_list *
319 remove_dup_dirs (pfile, head)
321 struct file_name_list *head;
323 struct file_name_list *prev = NULL, *cur, *other;
325 for (cur = head; cur; cur = cur->next)
327 for (other = head; other != cur; other = other->next)
328 if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
330 cur = remove_dup_dir (pfile, prev);
339 /* Merge the four include chains together in the order quote, bracket,
340 system, after. Remove duplicate dirs (as determined by
341 INO_T_EQ()). The system_include and after_include chains are never
342 referred to again after this function; all access is through the
343 bracket_include path.
345 For the future: Check if the directory is empty (but
346 how?) and possibly preload the include hash. */
349 merge_include_chains (pfile)
352 struct file_name_list *quote, *brack, *systm, *qtail;
354 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
356 quote = pend->quote_head;
357 brack = pend->brack_head;
358 systm = pend->systm_head;
359 qtail = pend->quote_tail;
361 /* Paste together bracket, system, and after include chains. */
363 pend->systm_tail->next = pend->after_head;
365 systm = pend->after_head;
368 pend->brack_tail->next = systm;
372 /* This is a bit tricky. First we drop dupes from the quote-include
373 list. Then we drop dupes from the bracket-include list.
374 Finally, if qtail and brack are the same directory, we cut out
377 We can't just merge the lists and then uniquify them because
378 then we may lose directories from the <> search path that should
379 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
380 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
381 -Ibar -I- -Ifoo -Iquux. */
383 remove_dup_dirs (pfile, brack);
384 qtail = remove_dup_dirs (pfile, quote);
390 /* If brack == qtail, remove brack as it's simpler. */
391 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
392 brack = remove_dup_dir (pfile, qtail);
397 CPP_OPTION (pfile, quote_include) = quote;
398 CPP_OPTION (pfile, bracket_include) = brack;
401 /* cpp_init initializes library global state. It might not need to do
402 anything depending on the platform and compiler, so we have a static
403 flag to make sure it gets called before cpp_reader_init. */
405 static int cpp_init_completed = 0;
411 /* For non-ASCII hosts, the cl_options array needs to be sorted at
413 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
416 /* Set up the trigraph map and the IStable. These don't need to do
417 anything if we were compiled with a compiler that supports C99
418 designated initializers. */
419 init_trigraph_map ();
422 cpp_init_completed = 1;
425 /* Initialize a cpp_reader structure. */
427 cpp_reader_init (pfile)
430 struct spec_nodes *s;
432 memset ((char *) pfile, 0, sizeof (cpp_reader));
434 /* If cpp_init hasn't been called, generate a fatal error (by hand)
436 if (!cpp_init_completed)
438 fputs ("cpp_reader_init: internal error: cpp_init not called.\n", stderr);
439 pfile->errors = CPP_FATAL_LIMIT;
443 CPP_OPTION (pfile, dollars_in_ident) = 1;
444 CPP_OPTION (pfile, cplusplus_comments) = 1;
445 CPP_OPTION (pfile, warn_import) = 1;
446 CPP_OPTION (pfile, warn_paste) = 1;
447 CPP_OPTION (pfile, digraphs) = 1;
448 CPP_OPTION (pfile, discard_comments) = 1;
449 CPP_OPTION (pfile, show_column) = 1;
450 CPP_OPTION (pfile, tabstop) = 8;
452 CPP_OPTION (pfile, pending) =
453 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
455 /* Initialize comment saving state. */
456 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
458 /* Indicate date and time not yet calculated. */
459 pfile->date.type = CPP_EOF;
461 /* Initialise the base context. */
462 pfile->context = &pfile->base_context;
463 pfile->base_context.macro = 0;
464 pfile->base_context.prev = pfile->base_context.next = 0;
466 /* Identifier pool initially 8K. Unaligned, permanent pool. */
467 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
469 /* String and number pool initially 4K. Unaligned, temporary pool. */
470 _cpp_init_pool (&pfile->temp_string_pool, 4 * 1024, 1, 1);
472 /* Argument pool initially 8K. Aligned, temporary pool. */
473 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
475 /* Macro pool initially 8K. Aligned, permanent pool. */
476 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
478 /* Start with temporary pool. */
479 pfile->string_pool = &pfile->temp_string_pool;
481 _cpp_init_hashtable (pfile);
482 _cpp_init_stacks (pfile);
483 _cpp_init_includes (pfile);
484 _cpp_init_internal_pragmas (pfile);
486 /* Initialize the special nodes. */
487 s = &pfile->spec_nodes;
488 s->n_L = cpp_lookup (pfile, DSC("L"));
489 s->n_defined = cpp_lookup (pfile, DSC("defined"));
490 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
491 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
492 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
493 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
496 /* Free resources used by PFILE.
497 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
502 struct file_name_list *dir, *dirn;
503 cpp_context *context, *contextn;
505 while (CPP_BUFFER (pfile) != NULL)
506 cpp_pop_buffer (pfile);
508 if (pfile->macro_buffer)
509 free ((PTR) pfile->macro_buffer);
512 deps_free (pfile->deps);
514 _cpp_cleanup_includes (pfile);
515 _cpp_cleanup_stacks (pfile);
516 _cpp_cleanup_hashtable (pfile);
518 _cpp_free_lookaheads (pfile);
520 _cpp_free_pool (&pfile->ident_pool);
521 _cpp_free_pool (&pfile->temp_string_pool);
522 _cpp_free_pool (&pfile->macro_pool);
523 _cpp_free_pool (&pfile->argument_pool);
525 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
532 for (context = pfile->base_context.next; context; context = contextn)
534 contextn = context->next;
540 /* This structure defines one built-in identifier. A node will be
541 entered in the hash table under the name NAME, with value VALUE (if
542 any). If flags has OPERATOR, the node's operator field is used; if
543 flags has BUILTIN the node's builtin field is used.
545 Two values are not compile time constants, so we tag
546 them in the FLAGS field instead:
547 VERS value is the global version_string, quoted
548 ULP value is the global user_label_prefix
550 Also, macros with CPLUS set in the flags field are entered only for C++. */
556 unsigned char builtin;
557 unsigned char operator;
558 unsigned short flags;
565 #define OPERATOR 0x10
567 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
568 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
569 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
570 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
571 static const struct builtin builtin_array[] =
573 B("__TIME__", BT_TIME),
574 B("__DATE__", BT_DATE),
575 B("__FILE__", BT_FILE),
576 B("__BASE_FILE__", BT_BASE_FILE),
577 B("__LINE__", BT_SPECLINE),
578 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
579 B("__STDC__", BT_STDC),
581 X("__VERSION__", VERS),
582 X("__USER_LABEL_PREFIX__", ULP),
583 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
584 C("__HAVE_BUILTIN_SETJMP__", "1"),
585 #ifndef NO_BUILTIN_SIZE_TYPE
586 C("__SIZE_TYPE__", SIZE_TYPE),
588 #ifndef NO_BUILTIN_PTRDIFF_TYPE
589 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
591 #ifndef NO_BUILTIN_WCHAR_TYPE
592 C("__WCHAR_TYPE__", WCHAR_TYPE),
594 #ifndef NO_BUILTIN_WINT_TYPE
595 C("__WINT_TYPE__", WINT_TYPE),
598 /* Named operators known to the preprocessor. These cannot be #defined
599 and always have their stated meaning. They are treated like normal
600 identifiers except for the type code and the meaning. Most of them
601 are only for C++ (but see iso646.h). */
602 O("and", CPP_AND_AND, CPLUS),
603 O("and_eq", CPP_AND_EQ, CPLUS),
604 O("bitand", CPP_AND, CPLUS),
605 O("bitor", CPP_OR, CPLUS),
606 O("compl", CPP_COMPL, CPLUS),
607 O("not", CPP_NOT, CPLUS),
608 O("not_eq", CPP_NOT_EQ, CPLUS),
609 O("or", CPP_OR_OR, CPLUS),
610 O("or_eq", CPP_OR_EQ, CPLUS),
611 O("xor", CPP_XOR, CPLUS),
612 O("xor_eq", CPP_XOR_EQ, CPLUS)
617 #define builtin_array_end \
618 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
620 /* Subroutine of cpp_start_read; reads the builtins table above and
621 enters the macros into the hash table. */
623 initialize_builtins (pfile)
626 const struct builtin *b;
628 for(b = builtin_array; b < builtin_array_end; b++)
630 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
633 if (b->flags & (OPERATOR | BUILTIN))
635 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
636 if (b->flags & OPERATOR)
638 hp->flags |= NODE_OPERATOR;
639 hp->value.operator = b->operator;
644 hp->flags |= NODE_BUILTIN;
645 hp->value.builtin = b->builtin;
648 else /* A standard macro of some kind. */
655 /* Allocate enough space for 'name "value"\n\0'. */
656 str = alloca (b->len + strlen (version_string) + 5);
657 sprintf (str, "%s \"%s\"\n", b->name, version_string);
662 val = CPP_OPTION (pfile, user_label_prefix);
666 /* Allocate enough space for "name value\n\0". */
667 str = alloca (b->len + strlen (val) + 3);
668 sprintf(str, "%s %s\n", b->name, val);
671 _cpp_define_builtin (pfile, str);
680 #undef builtin_array_end
682 /* Another subroutine of cpp_start_read. This one sets up to do
683 dependency-file output. */
685 initialize_dependency_output (pfile)
688 char *spec, *s, *output_file;
690 /* Either of two environment variables can specify output of deps.
691 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
692 where OUTPUT_FILE is the file to write deps info to
693 and DEPS_TARGET is the target to mention in the deps. */
695 if (CPP_OPTION (pfile, print_deps) == 0)
697 spec = getenv ("DEPENDENCIES_OUTPUT");
699 CPP_OPTION (pfile, print_deps) = 1;
702 spec = getenv ("SUNPRO_DEPENDENCIES");
704 CPP_OPTION (pfile, print_deps) = 2;
709 /* Find the space before the DEPS_TARGET, if there is one. */
710 s = strchr (spec, ' ');
713 CPP_OPTION (pfile, deps_target) = s + 1;
714 output_file = (char *) xmalloc (s - spec + 1);
715 memcpy (output_file, spec, s - spec);
716 output_file[s - spec] = 0;
720 CPP_OPTION (pfile, deps_target) = 0;
724 CPP_OPTION (pfile, deps_file) = output_file;
725 CPP_OPTION (pfile, print_deps_append) = 1;
728 pfile->deps = deps_init ();
730 /* Print the expected object file name as the target of this Make-rule. */
731 if (CPP_OPTION (pfile, deps_target))
732 deps_add_target (pfile->deps, CPP_OPTION (pfile, deps_target));
733 else if (*CPP_OPTION (pfile, in_fname) == 0)
734 deps_add_target (pfile->deps, "-");
736 deps_calc_target (pfile->deps, CPP_OPTION (pfile, in_fname));
738 if (CPP_OPTION (pfile, in_fname))
739 deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
742 /* And another subroutine. This one sets up the standard include path. */
744 initialize_standard_includes (pfile)
748 const struct default_include *p;
749 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
751 /* Several environment variables may add to the include search path.
752 CPATH specifies an additional list of directories to be searched
753 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
754 etc. specify an additional list of directories to be searched as
755 if specified with -isystem, for the language indicated. */
757 GET_ENV_PATH_LIST (path, "CPATH");
758 if (path != 0 && *path != 0)
759 path_include (pfile, path, BRACKET);
761 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
764 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
767 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
770 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
773 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
776 if (path != 0 && *path != 0)
777 path_include (pfile, path, SYSTEM);
779 /* Search "translated" versions of GNU directories.
780 These have /usr/local/lib/gcc... replaced by specd_prefix. */
781 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
783 /* Remove the `include' from /usr/local/lib/gcc.../include.
784 GCC_INCLUDE_DIR will always end in /include. */
785 int default_len = cpp_GCC_INCLUDE_DIR_len;
786 char *default_prefix = (char *) alloca (default_len + 1);
787 int specd_len = strlen (specd_prefix);
789 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
790 default_prefix[default_len] = '\0';
792 for (p = cpp_include_defaults; p->fname; p++)
794 /* Some standard dirs are only for C++. */
796 || (CPP_OPTION (pfile, cplusplus)
797 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
799 /* Does this dir start with the prefix? */
800 if (!memcmp (p->fname, default_prefix, default_len))
802 /* Yes; change prefix and add to search list. */
803 int flen = strlen (p->fname);
804 int this_len = specd_len + flen - default_len;
805 char *str = (char *) xmalloc (this_len + 1);
806 memcpy (str, specd_prefix, specd_len);
807 memcpy (str + specd_len,
808 p->fname + default_len,
809 flen - default_len + 1);
811 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
817 /* Search ordinary names for GNU include directories. */
818 for (p = cpp_include_defaults; p->fname; p++)
820 /* Some standard dirs are only for C++. */
822 || (CPP_OPTION (pfile, cplusplus)
823 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
825 /* XXX Potential memory leak! */
826 char *str = xstrdup (update_path (p->fname, p->component));
827 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
832 /* This is called after options have been processed.
833 * Check options for consistency, and setup for processing input
834 * from the file named FNAME. (Use standard input if FNAME==NULL.)
835 * Return 1 on success, 0 on failure.
839 cpp_start_read (pfile, fname)
843 struct pending_option *p, *q;
845 /* -MG doesn't select the form of output and must be specified with one of
846 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
847 inhibit compilation. */
848 if (CPP_OPTION (pfile, print_deps_missing_files)
849 && (CPP_OPTION (pfile, print_deps) == 0
850 || !CPP_OPTION (pfile, no_output)))
852 cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
856 /* -Wtraditional is not useful in C++ mode. */
857 if (CPP_OPTION (pfile, cplusplus))
858 CPP_OPTION (pfile, warn_traditional) = 0;
860 /* Do not warn about invalid token pasting if -lang-asm. */
861 if (CPP_OPTION (pfile, lang_asm))
862 CPP_OPTION (pfile, warn_paste) = 0;
864 /* Set this if it hasn't been set already. */
865 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
866 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
868 /* Set up the include search path now. */
869 if (! CPP_OPTION (pfile, no_standard_includes))
870 initialize_standard_includes (pfile);
872 merge_include_chains (pfile);
874 /* With -v, print the list of dirs to search. */
875 if (CPP_OPTION (pfile, verbose))
877 struct file_name_list *l;
878 fprintf (stderr, _("#include \"...\" search starts here:\n"));
879 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
881 if (l == CPP_OPTION (pfile, bracket_include))
882 fprintf (stderr, _("#include <...> search starts here:\n"));
883 fprintf (stderr, " %s\n", l->name);
885 fprintf (stderr, _("End of search list.\n"));
888 /* Open the main input file. This must be done early, so we have a
889 buffer to stand on. */
890 if (CPP_OPTION (pfile, in_fname) == NULL
891 || *CPP_OPTION (pfile, in_fname) == 0)
893 CPP_OPTION (pfile, in_fname) = fname;
894 if (CPP_OPTION (pfile, in_fname) == NULL)
895 CPP_OPTION (pfile, in_fname) = "";
897 if (CPP_OPTION (pfile, out_fname) == NULL)
898 CPP_OPTION (pfile, out_fname) = "";
900 if (!cpp_read_file (pfile, fname))
903 initialize_dependency_output (pfile);
905 /* Install __LINE__, etc. */
906 initialize_builtins (pfile);
908 /* Do -U's, -D's and -A's in the order they were seen. */
909 p = CPP_OPTION (pfile, pending)->directive_head;
912 (*p->handler) (pfile, p->arg);
917 pfile->done_initializing = 1;
919 /* The -imacros files can be scanned now, but the -include files
920 have to be pushed onto the include stack and processed later,
921 in the main loop calling cpp_get_token. */
923 p = CPP_OPTION (pfile, pending)->imacros_head;
926 if (cpp_read_file (pfile, p->arg))
927 cpp_scan_buffer_nooutput (pfile);
933 p = CPP_OPTION (pfile, pending)->include_head;
936 cpp_read_file (pfile, p->arg);
942 free (CPP_OPTION (pfile, pending));
943 CPP_OPTION (pfile, pending) = NULL;
948 /* This is called at the end of preprocessing. It pops the
949 last buffer and writes dependency output. It should also
950 clear macro definitions, such that you could call cpp_start_read
951 with a new filename to restart processing. */
956 if (CPP_BUFFER (pfile))
958 cpp_ice (pfile, "buffers still stacked in cpp_finish");
959 while (CPP_BUFFER (pfile))
960 cpp_pop_buffer (pfile);
963 /* Don't write the deps file if preprocessing has failed. */
964 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
966 /* Stream on which to print the dependency information. */
967 FILE *deps_stream = 0;
968 const char *deps_mode
969 = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
970 if (CPP_OPTION (pfile, deps_file) == 0)
971 deps_stream = stdout;
974 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
975 if (deps_stream == 0)
976 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
980 deps_write (pfile->deps, deps_stream, 72);
981 if (CPP_OPTION (pfile, deps_file))
983 if (ferror (deps_stream) || fclose (deps_stream) != 0)
984 cpp_fatal (pfile, "I/O error on output");
989 /* Report on headers that could use multiple include guards. */
990 if (CPP_OPTION (pfile, print_include_names))
991 _cpp_report_missing_guards (pfile);
995 new_pending_directive (pend, text, handler)
996 struct cpp_pending *pend;
998 cl_directive_handler handler;
1000 struct pending_option *o = (struct pending_option *)
1001 xmalloc (sizeof (struct pending_option));
1005 o->handler = handler;
1006 APPEND (pend, directive, o);
1009 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1010 I.e. a const string initializer with parens around it. That is
1011 what N_("string") resolves to, so we make no_* be macros instead. */
1012 #define no_arg N_("Argument missing after %s")
1013 #define no_ass N_("Assertion missing after %s")
1014 #define no_dir N_("Directory name missing after %s")
1015 #define no_fil N_("File name missing after %s")
1016 #define no_mac N_("Macro name missing after %s")
1017 #define no_pth N_("Path name missing after %s")
1018 #define no_num N_("Number missing after %s")
1020 /* This is the list of all command line options, with the leading
1021 "-" removed. It must be sorted in ASCII collating order. */
1022 #define COMMAND_LINE_OPTIONS \
1023 DEF_OPT("", 0, OPT_stdin_stdout) \
1024 DEF_OPT("$", 0, OPT_dollar) \
1025 DEF_OPT("+", 0, OPT_plus) \
1026 DEF_OPT("-help", 0, OPT__help) \
1027 DEF_OPT("-version", 0, OPT__version) \
1028 DEF_OPT("A", no_ass, OPT_A) \
1029 DEF_OPT("C", 0, OPT_C) \
1030 DEF_OPT("D", no_mac, OPT_D) \
1031 DEF_OPT("H", 0, OPT_H) \
1032 DEF_OPT("I", no_dir, OPT_I) \
1033 DEF_OPT("M", 0, OPT_M) \
1034 DEF_OPT("MD", no_fil, OPT_MD) \
1035 DEF_OPT("MG", 0, OPT_MG) \
1036 DEF_OPT("MM", 0, OPT_MM) \
1037 DEF_OPT("MMD", no_fil, OPT_MMD) \
1038 DEF_OPT("P", 0, OPT_P) \
1039 DEF_OPT("U", no_mac, OPT_U) \
1040 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1041 DEF_OPT("d", no_arg, OPT_d) \
1042 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1043 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1044 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1045 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1046 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1047 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1048 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1049 DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
1050 DEF_OPT("h", 0, OPT_h) \
1051 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1052 DEF_OPT("imacros", no_fil, OPT_imacros) \
1053 DEF_OPT("include", no_fil, OPT_include) \
1054 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1055 DEF_OPT("isystem", no_dir, OPT_isystem) \
1056 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1057 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1058 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1059 DEF_OPT("lang-c", 0, OPT_lang_c) \
1060 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1061 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1062 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1063 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1064 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1065 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1066 DEF_OPT("o", no_fil, OPT_o) \
1067 DEF_OPT("pedantic", 0, OPT_pedantic) \
1068 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1069 DEF_OPT("remap", 0, OPT_remap) \
1070 DEF_OPT("std=c89", 0, OPT_std_c89) \
1071 DEF_OPT("std=c99", 0, OPT_std_c99) \
1072 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1073 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1074 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1075 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1076 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1077 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1078 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1079 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1080 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1081 DEF_OPT("v", 0, OPT_v) \
1082 DEF_OPT("w", 0, OPT_w)
1084 #define DEF_OPT(text, msg, code) code,
1087 COMMAND_LINE_OPTIONS
1094 const char *opt_text;
1097 enum opt_code opt_code;
1100 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1102 static struct cl_option cl_options[] =
1104 static const struct cl_option cl_options[] =
1107 COMMAND_LINE_OPTIONS
1110 #undef COMMAND_LINE_OPTIONS
1112 /* Perform a binary search to find which, if any, option the given
1113 command-line matches. Returns its index in the option array,
1114 negative on failure. Complications arise since some options can be
1115 suffixed with an argument, and multiple complete matches can occur,
1116 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1117 accept options beginning with -g and -W that we do not recognise,
1118 but not to swallow any subsequent command line argument; these are
1119 handled as special cases in cpp_handle_option */
1121 parse_option (input)
1124 unsigned int md, mn, mx;
1135 opt_len = cl_options[md].opt_len;
1136 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1144 if (input[opt_len] == '\0')
1146 /* We were passed more text. If the option takes an argument,
1147 we may match a later option or we may have been passed the
1148 argument. The longest possible option match succeeds.
1149 If the option takes no arguments we have not matched and
1150 continue the search (e.g. input="stdc++" match was "stdc") */
1152 if (cl_options[md].msg)
1154 /* Scan forwards. If we get an exact match, return it.
1155 Otherwise, return the longest option-accepting match.
1156 This loops no more than twice with current options */
1158 for (; mn < N_OPTS; mn++)
1160 opt_len = cl_options[mn].opt_len;
1161 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1163 if (input[opt_len] == '\0')
1165 if (cl_options[mn].msg)
1176 /* Handle one command-line option in (argc, argv).
1177 Can be called multiple times, to handle multiple sets of options.
1178 Returns number of strings consumed. */
1181 cpp_handle_option (pfile, argc, argv)
1187 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1189 if (argv[i][0] != '-')
1191 if (CPP_OPTION (pfile, out_fname) != NULL)
1192 cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
1194 else if (CPP_OPTION (pfile, in_fname) != NULL)
1195 CPP_OPTION (pfile, out_fname) = argv[i];
1197 CPP_OPTION (pfile, in_fname) = argv[i];
1201 enum opt_code opt_code;
1203 const char *arg = 0;
1206 opt_index = parse_option (&argv[i][1]);
1210 opt_code = cl_options[opt_index].opt_code;
1211 if (cl_options[opt_index].msg)
1213 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1215 /* Yuk. Special case for -g and -W as they must not swallow
1216 up any following argument. If this becomes common, add
1217 another field to the cl_options table */
1218 if (arg[0] == '\0' && !(opt_code == OPT_g || opt_code == OPT_W))
1223 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1231 case N_OPTS: /* shut GCC up */
1233 case OPT_fleading_underscore:
1234 CPP_OPTION (pfile, user_label_prefix) = "_";
1236 case OPT_fno_leading_underscore:
1237 CPP_OPTION (pfile, user_label_prefix) = "";
1239 case OPT_fpreprocessed:
1240 CPP_OPTION (pfile, preprocessed) = 1;
1242 case OPT_fno_preprocessed:
1243 CPP_OPTION (pfile, preprocessed) = 0;
1245 case OPT_fshow_column:
1246 CPP_OPTION (pfile, show_column) = 1;
1248 case OPT_fno_show_column:
1249 CPP_OPTION (pfile, show_column) = 0;
1252 /* Silently ignore empty string, non-longs and silly values. */
1256 long tabstop = strtol (arg, &endptr, 10);
1257 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1258 CPP_OPTION (pfile, tabstop) = tabstop;
1262 CPP_OPTION (pfile, inhibit_warnings) = 1;
1264 case OPT_g: /* Silently ignore anything but -g3 */
1265 if (!strcmp(&argv[i][2], "3"))
1266 CPP_OPTION (pfile, debug_output) = 1;
1274 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1278 CPP_OPTION (pfile, discard_comments) = 0;
1281 CPP_OPTION (pfile, no_line_commands) = 1;
1283 case OPT_dollar: /* Don't include $ in identifiers. */
1284 CPP_OPTION (pfile, dollars_in_ident) = 0;
1287 CPP_OPTION (pfile, print_include_names) = 1;
1290 new_pending_directive (pend, arg, cpp_define);
1292 case OPT_pedantic_errors:
1293 CPP_OPTION (pfile, pedantic_errors) = 1;
1296 CPP_OPTION (pfile, pedantic) = 1;
1299 CPP_OPTION (pfile, trigraphs) = 1;
1302 CPP_OPTION (pfile, cplusplus) = 1;
1303 CPP_OPTION (pfile, cplusplus_comments) = 1;
1306 CPP_OPTION (pfile, remap) = 1;
1309 CPP_OPTION (pfile, include_prefix) = arg;
1310 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1313 CPP_OPTION (pfile, cplusplus) = 0;
1314 CPP_OPTION (pfile, cplusplus_comments) = 1;
1315 CPP_OPTION (pfile, c89) = 0;
1316 CPP_OPTION (pfile, c99) = 1;
1317 CPP_OPTION (pfile, digraphs) = 1;
1318 CPP_OPTION (pfile, objc) = 0;
1320 case OPT_lang_cplusplus:
1321 CPP_OPTION (pfile, cplusplus) = 1;
1322 CPP_OPTION (pfile, cplusplus_comments) = 1;
1323 CPP_OPTION (pfile, c89) = 0;
1324 CPP_OPTION (pfile, c99) = 0;
1325 CPP_OPTION (pfile, objc) = 0;
1326 CPP_OPTION (pfile, digraphs) = 1;
1327 new_pending_directive (pend, "__cplusplus", cpp_define);
1329 case OPT_lang_objcplusplus:
1330 CPP_OPTION (pfile, cplusplus) = 1;
1331 new_pending_directive (pend, "__cplusplus", cpp_define);
1334 CPP_OPTION (pfile, cplusplus_comments) = 1;
1335 CPP_OPTION (pfile, c89) = 0;
1336 CPP_OPTION (pfile, c99) = 0;
1337 CPP_OPTION (pfile, objc) = 1;
1338 new_pending_directive (pend, "__OBJC__", cpp_define);
1341 CPP_OPTION (pfile, lang_asm) = 1;
1342 CPP_OPTION (pfile, dollars_in_ident) = 0;
1343 new_pending_directive (pend, "__ASSEMBLER__", cpp_define);
1346 /* -nostdinc causes no default include directories.
1347 You must specify all include-file directories with -I. */
1348 CPP_OPTION (pfile, no_standard_includes) = 1;
1350 case OPT_nostdincplusplus:
1351 /* -nostdinc++ causes no default C++-specific include directories. */
1352 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1355 CPP_OPTION (pfile, cplusplus) = 0;
1356 CPP_OPTION (pfile, cplusplus_comments) = 1;
1357 CPP_OPTION (pfile, c89) = 1;
1358 CPP_OPTION (pfile, c99) = 0;
1359 CPP_OPTION (pfile, objc) = 0;
1360 CPP_OPTION (pfile, digraphs) = 1;
1364 CPP_OPTION (pfile, cplusplus) = 0;
1365 CPP_OPTION (pfile, cplusplus_comments) = 1;
1366 CPP_OPTION (pfile, c89) = 0;
1367 CPP_OPTION (pfile, c99) = 1;
1368 CPP_OPTION (pfile, digraphs) = 1;
1369 CPP_OPTION (pfile, objc) = 0;
1370 new_pending_directive (pend, "__STDC_VERSION__=199901L", cpp_define);
1372 case OPT_std_iso9899_199409:
1373 new_pending_directive (pend, "__STDC_VERSION__=199409L", cpp_define);
1375 case OPT_std_iso9899_1990:
1378 CPP_OPTION (pfile, cplusplus) = 0;
1379 CPP_OPTION (pfile, cplusplus_comments) = 0;
1380 CPP_OPTION (pfile, c89) = 1;
1381 CPP_OPTION (pfile, c99) = 0;
1382 CPP_OPTION (pfile, objc) = 0;
1383 CPP_OPTION (pfile, digraphs) = opt_code == OPT_std_iso9899_199409;
1384 CPP_OPTION (pfile, trigraphs) = 1;
1385 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
1387 case OPT_std_iso9899_199x:
1388 case OPT_std_iso9899_1999:
1391 CPP_OPTION (pfile, cplusplus) = 0;
1392 CPP_OPTION (pfile, cplusplus_comments) = 1;
1393 CPP_OPTION (pfile, c89) = 0;
1394 CPP_OPTION (pfile, c99) = 1;
1395 CPP_OPTION (pfile, objc) = 0;
1396 CPP_OPTION (pfile, digraphs) = 1;
1397 CPP_OPTION (pfile, trigraphs) = 1;
1398 new_pending_directive (pend, "__STRICT_ANSI__", cpp_define);
1399 new_pending_directive (pend, "__STDC_VERSION__=199901L", cpp_define);
1402 if (CPP_OPTION (pfile, out_fname) != NULL)
1404 cpp_fatal (pfile, "Output filename specified twice");
1407 CPP_OPTION (pfile, out_fname) = arg;
1408 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1409 CPP_OPTION (pfile, out_fname) = "";
1412 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1413 #ifdef TARGET_VERSION
1416 fputc ('\n', stderr);
1417 CPP_OPTION (pfile, verbose) = 1;
1419 case OPT_stdin_stdout:
1420 /* JF handle '-' as file name meaning stdin or stdout */
1421 if (CPP_OPTION (pfile, in_fname) == NULL)
1422 CPP_OPTION (pfile, in_fname) = "";
1423 else if (CPP_OPTION (pfile, out_fname) == NULL)
1424 CPP_OPTION (pfile, out_fname) = "";
1427 /* Args to -d specify what parts of macros to dump.
1428 Silently ignore unrecognised options; they may
1429 be aimed at the compiler proper. */
1433 while ((c = *arg++) != '\0')
1437 CPP_OPTION (pfile, dump_macros) = dump_only;
1438 CPP_OPTION (pfile, no_output) = 1;
1441 CPP_OPTION (pfile, dump_macros) = dump_names;
1444 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1447 CPP_OPTION (pfile, dump_includes) = 1;
1452 /* The style of the choices here is a bit mixed.
1453 The chosen scheme is a hybrid of keeping all options in one string
1454 and specifying each option in a separate argument:
1455 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1456 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1457 -M[M][G][D file]. This is awkward to handle in specs, and is not
1459 /* ??? -MG must be specified in addition to one of -M or -MM.
1460 This can be relaxed in the future without breaking anything.
1461 The converse isn't true. */
1463 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1465 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1471 if (opt_code == OPT_M || opt_code == OPT_MD)
1472 CPP_OPTION (pfile, print_deps) = 2;
1474 CPP_OPTION (pfile, print_deps) = 1;
1476 /* For -MD and -MMD options, write deps on file named by next arg */
1477 /* For -M and -MM, write deps on standard output
1478 and suppress the usual output. */
1479 if (opt_code == OPT_MD || opt_code == OPT_MMD)
1480 CPP_OPTION (pfile, deps_file) = arg;
1482 CPP_OPTION (pfile, no_output) = 1;
1487 /* -A with an argument beginning with '-' acts as
1488 #unassert on whatever immediately follows the '-'.
1489 If "-" is the whole argument, we eliminate all
1490 predefined macros and assertions, including those
1491 that were specified earlier on the command line.
1492 That way we can get rid of any that were passed
1493 automatically in from GCC. */
1497 struct pending_option *o1, *o2;
1499 o1 = pend->directive_head;
1506 pend->directive_head = NULL;
1507 pend->directive_tail = NULL;
1510 new_pending_directive (pend, arg + 1, cpp_unassert);
1513 new_pending_directive (pend, arg, cpp_assert);
1516 new_pending_directive (pend, arg, cpp_undef);
1518 case OPT_I: /* Add directory to path for includes. */
1519 if (!strcmp (arg, "-"))
1522 Use the preceding -I directories for #include "..."
1523 but not #include <...>.
1524 Don't search the directory of the present file
1525 for #include "...". (Note that -I. -I- is not the same as
1526 the default setup; -I. uses the compiler's working dir.) */
1527 if (! CPP_OPTION (pfile, ignore_srcdir))
1529 pend->quote_head = pend->brack_head;
1530 pend->quote_tail = pend->brack_tail;
1531 pend->brack_head = 0;
1532 pend->brack_tail = 0;
1533 CPP_OPTION (pfile, ignore_srcdir) = 1;
1537 cpp_fatal (pfile, "-I- specified twice");
1542 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1545 /* Add directory to beginning of system include path, as a system
1546 include directory. */
1547 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1551 struct pending_option *o = (struct pending_option *)
1552 xmalloc (sizeof (struct pending_option));
1555 /* This list has to be built in reverse order so that
1556 when cpp_start_read pushes all the -include files onto
1557 the buffer stack, they will be scanned in forward order. */
1558 o->next = pend->include_head;
1559 pend->include_head = o;
1564 struct pending_option *o = (struct pending_option *)
1565 xmalloc (sizeof (struct pending_option));
1569 APPEND (pend, imacros, o);
1572 case OPT_iwithprefix:
1573 /* Add directory to end of path for includes,
1574 with the default prefix at the front of its name. */
1576 case OPT_iwithprefixbefore:
1577 /* Add directory to main path for includes,
1578 with the default prefix at the front of its name. */
1585 if (CPP_OPTION (pfile, include_prefix) != 0)
1587 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1588 fname = xmalloc (ipl + len + 1);
1589 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1590 memcpy (fname + ipl, arg, len + 1);
1592 else if (cpp_GCC_INCLUDE_DIR_len)
1594 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1595 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1596 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1599 fname = xstrdup (arg);
1601 append_include_chain (pfile, fname,
1602 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1606 /* Add directory to end of path for includes. */
1607 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1610 /* Silently ignore unrecognised options */
1611 if (!strcmp (argv[i], "-Wall"))
1613 CPP_OPTION (pfile, warn_trigraphs) = 1;
1614 CPP_OPTION (pfile, warn_comments) = 1;
1616 else if (!strcmp (argv[i], "-Wtraditional"))
1617 CPP_OPTION (pfile, warn_traditional) = 1;
1618 else if (!strcmp (argv[i], "-Wtrigraphs"))
1619 CPP_OPTION (pfile, warn_trigraphs) = 1;
1620 else if (!strcmp (argv[i], "-Wcomment"))
1621 CPP_OPTION (pfile, warn_comments) = 1;
1622 else if (!strcmp (argv[i], "-Wcomments"))
1623 CPP_OPTION (pfile, warn_comments) = 1;
1624 else if (!strcmp (argv[i], "-Wundef"))
1625 CPP_OPTION (pfile, warn_undef) = 1;
1626 else if (!strcmp (argv[i], "-Wimport"))
1627 CPP_OPTION (pfile, warn_import) = 1;
1628 else if (!strcmp (argv[i], "-Wpaste"))
1629 CPP_OPTION (pfile, warn_paste) = 1;
1630 else if (!strcmp (argv[i], "-Werror"))
1631 CPP_OPTION (pfile, warnings_are_errors) = 1;
1632 else if (!strcmp (argv[i], "-Wsystem-headers"))
1633 CPP_OPTION (pfile, warn_system_headers) = 1;
1634 else if (!strcmp (argv[i], "-Wno-traditional"))
1635 CPP_OPTION (pfile, warn_traditional) = 0;
1636 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1637 CPP_OPTION (pfile, warn_trigraphs) = 0;
1638 else if (!strcmp (argv[i], "-Wno-comment"))
1639 CPP_OPTION (pfile, warn_comments) = 0;
1640 else if (!strcmp (argv[i], "-Wno-comments"))
1641 CPP_OPTION (pfile, warn_comments) = 0;
1642 else if (!strcmp (argv[i], "-Wno-undef"))
1643 CPP_OPTION (pfile, warn_undef) = 0;
1644 else if (!strcmp (argv[i], "-Wno-import"))
1645 CPP_OPTION (pfile, warn_import) = 0;
1646 else if (!strcmp (argv[i], "-Wno-paste"))
1647 CPP_OPTION (pfile, warn_paste) = 0;
1648 else if (!strcmp (argv[i], "-Wno-error"))
1649 CPP_OPTION (pfile, warnings_are_errors) = 0;
1650 else if (!strcmp (argv[i], "-Wno-system-headers"))
1651 CPP_OPTION (pfile, warn_system_headers) = 0;
1660 opt_comp (const void *p1, const void *p2)
1662 return strcmp (((struct cl_option *)p1)->opt_text,
1663 ((struct cl_option *)p2)->opt_text);
1667 /* Handle command-line options in (argc, argv).
1668 Can be called multiple times, to handle multiple sets of options.
1669 Returns if an unrecognized option is seen.
1670 Returns number of strings consumed. */
1672 cpp_handle_options (pfile, argc, argv)
1678 int strings_processed;
1680 for (i = 0; i < argc; i += strings_processed)
1682 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1683 if (strings_processed == 0)
1692 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1693 /* To keep the lines from getting too long for some compilers, limit
1694 to about 500 characters (6 lines) per chunk. */
1697 -include <file> Include the contents of <file> before other files\n\
1698 -imacros <file> Accept definition of macros in <file>\n\
1699 -iprefix <path> Specify <path> as a prefix for next two options\n\
1700 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1701 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1702 -isystem <dir> Add <dir> to the start of the system include path\n\
1705 -idirafter <dir> Add <dir> to the end of the system include path\n\
1706 -I <dir> Add <dir> to the end of the main include path\n\
1707 -I- Fine-grained include path control; see info docs\n\
1708 -nostdinc Do not search system include directories\n\
1709 (dirs specified with -isystem will still be used)\n\
1710 -nostdinc++ Do not search system include directories for C++\n\
1711 -o <file> Put output into <file>\n\
1714 -pedantic Issue all warnings demanded by strict ISO C\n\
1715 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1716 -trigraphs Support ISO C trigraphs\n\
1717 -lang-c Assume that the input sources are in C\n\
1718 -lang-c89 Assume that the input sources are in C89\n\
1721 -lang-c++ Assume that the input sources are in C++\n\
1722 -lang-objc Assume that the input sources are in ObjectiveC\n\
1723 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1724 -lang-asm Assume that the input sources are in assembler\n\
1727 -std=<std name> Specify the conformance standard; one of:\n\
1728 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1729 iso9899:199409, iso9899:1999\n\
1730 -+ Allow parsing of C++ style features\n\
1731 -w Inhibit warning messages\n\
1732 -Wtrigraphs Warn if trigraphs are encountered\n\
1733 -Wno-trigraphs Do not warn about trigraphs\n\
1734 -Wcomment{s} Warn if one comment starts inside another\n\
1737 -Wno-comment{s} Do not warn about comments\n\
1738 -Wtraditional Warn about features not present in traditional C\n\
1739 -Wno-traditional Do not warn about traditional C\n\
1740 -Wundef Warn if an undefined macro is used by #if\n\
1741 -Wno-undef Do not warn about testing undefined macros\n\
1742 -Wimport Warn about the use of the #import directive\n\
1745 -Wno-import Do not warn about the use of #import\n\
1746 -Werror Treat all warnings as errors\n\
1747 -Wno-error Do not treat warnings as errors\n\
1748 -Wsystem-headers Do not suppress warnings from system headers\n\
1749 -Wno-system-headers Suppress warnings from system headers\n\
1750 -Wall Enable all preprocessor warnings\n\
1753 -M Generate make dependencies\n\
1754 -MM As -M, but ignore system header files\n\
1755 -MD As -M, but put output in a .d file\n\
1756 -MMD As -MD, but ignore system header files\n\
1757 -MG Treat missing header file as generated files\n\
1758 -g3 Include #define and #undef directives in the output\n\
1761 -D<macro> Define a <macro> with string '1' as its value\n\
1762 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1763 -A<question> (<answer>) Assert the <answer> to <question>\n\
1764 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1765 -U<macro> Undefine <macro> \n\
1766 -v Display the version number\n\
1769 -H Print the name of header files as they are used\n\
1770 -C Do not discard comments\n\
1771 -dM Display a list of macro definitions active at end\n\
1772 -dD Preserve macro definitions in output\n\
1773 -dN As -dD except that only the names are preserved\n\
1774 -dI Include #include directives in the output\n\
1777 -ftabstop=<number> Distance between tab stops for column reporting\n\
1778 -P Do not generate #line directives\n\
1779 -$ Do not allow '$' in identifiers\n\
1780 -remap Remap file names when including files.\n\
1781 --version Display version information\n\
1782 -h or --help Display this information\n\