2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002 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. */
30 #include "cppdefault.h"
31 #include "except.h" /* for USING_SJLJ_EXCEPTIONS */
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 # define INO_T_COPY(DEST, SRC) memcpy(&(DEST), &(SRC), sizeof (SRC))
46 # if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
47 # define INO_T_EQ(A, B) 0
49 # define INO_T_EQ(A, B) ((A) == (B))
51 # define INO_T_COPY(DEST, SRC) (DEST) = (SRC)
54 /* Internal structures and prototypes. */
56 /* A `struct pending_option' remembers one -D, -A, -U, -include, or
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_read_main_file. 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 search_path *quote_head, *quote_tail;
75 struct search_path *brack_head, *brack_tail;
76 struct search_path *systm_head, *systm_tail;
77 struct search_path *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 init_library PARAMS ((void));
101 static void init_builtins PARAMS ((cpp_reader *));
102 static void append_include_chain PARAMS ((cpp_reader *,
104 static struct search_path * remove_dup_dir PARAMS ((cpp_reader *,
105 struct search_path *));
106 static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *,
107 struct search_path *));
108 static void merge_include_chains PARAMS ((cpp_reader *));
109 static bool push_include PARAMS ((cpp_reader *,
110 struct pending_option *));
111 static void free_chain PARAMS ((struct pending_option *));
112 static void set_lang PARAMS ((cpp_reader *, enum c_lang));
113 static void init_dependency_output PARAMS ((cpp_reader *));
114 static void init_standard_includes PARAMS ((cpp_reader *));
115 static void read_original_filename PARAMS ((cpp_reader *));
116 static void new_pending_directive PARAMS ((struct cpp_pending *,
118 cl_directive_handler));
119 static void output_deps PARAMS ((cpp_reader *));
120 static int parse_option PARAMS ((const char *));
122 /* Fourth argument to append_include_chain: chain to use.
123 Note it's never asked to append to the quote chain. */
124 enum { BRACKET = 0, SYSTEM, AFTER };
126 /* If we have designated initializers (GCC >2.7) these tables can be
127 initialized, constant data. Otherwise, they have to be filled in at
129 #if HAVE_DESIGNATED_INITIALIZERS
131 #define init_trigraph_map() /* Nothing. */
132 #define TRIGRAPH_MAP \
133 __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = {
136 #define s(p, v) [p] = v,
140 #define TRIGRAPH_MAP U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
141 static void init_trigraph_map PARAMS ((void)) { \
142 unsigned char *x = _cpp_trigraph_map;
145 #define s(p, v) x[p] = v;
150 s('=', '#') s(')', ']') s('!', '|')
151 s('(', '[') s('\'', '^') s('>', '}')
152 s('/', '\\') s('<', '{') s('-', '~')
159 /* Given a colon-separated list of file names PATH,
160 add all the names to the search path for include files. */
162 path_include (pfile, list, path)
173 /* Find the end of this name. */
175 while (*q != 0 && *q != PATH_SEPARATOR) q++;
178 /* An empty name in the path stands for the current directory. */
179 name = (char *) xmalloc (2);
185 /* Otherwise use the directory that is named. */
186 name = (char *) xmalloc (q - p + 1);
187 memcpy (name, p, q - p);
191 append_include_chain (pfile, name, path, 0);
193 /* Advance past this name. */
201 /* Append DIR to include path PATH. DIR must be allocated on the
202 heap; this routine takes responsibility for freeing it. CXX_AWARE
203 is non-zero if the header contains extern "C" guards for C++,
204 otherwise it is zero. */
206 append_include_chain (pfile, dir, path, cxx_aware)
210 int cxx_aware ATTRIBUTE_UNUSED;
212 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
213 struct search_path *new;
222 _cpp_simplify_pathname (dir);
226 /* Dirs that don't exist are silently ignored. */
228 cpp_notice_from_errno (pfile, dir);
229 else if (CPP_OPTION (pfile, verbose))
230 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
235 if (!S_ISDIR (st.st_mode))
237 cpp_notice (pfile, "%s: Not a directory", dir);
243 if (len > pfile->max_include_len)
244 pfile->max_include_len = len;
246 new = (struct search_path *) xmalloc (sizeof (struct search_path));
249 INO_T_COPY (new->ino, st.st_ino);
250 new->dev = st.st_dev;
251 /* Both systm and after include file lists should be treated as system
252 include files since these two lists are really just a concatenation
253 of one "system" list. */
254 if (path == SYSTEM || path == AFTER)
255 #ifdef NO_IMPLICIT_EXTERN_C
258 new->sysp = cxx_aware ? 1 : 2;
262 new->name_map = NULL;
267 case BRACKET: APPEND (pend, brack, new); break;
268 case SYSTEM: APPEND (pend, systm, new); break;
269 case AFTER: APPEND (pend, after, new); break;
273 /* Handle a duplicated include path. PREV is the link in the chain
274 before the duplicate. The duplicate is removed from the chain and
275 freed. Returns PREV. */
276 static struct search_path *
277 remove_dup_dir (pfile, prev)
279 struct search_path *prev;
281 struct search_path *cur = prev->next;
283 if (CPP_OPTION (pfile, verbose))
284 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
286 prev->next = cur->next;
287 free ((PTR) cur->name);
293 /* Remove duplicate directories from a chain. Returns the tail of the
294 chain, or NULL if the chain is empty. This algorithm is quadratic
295 in the number of -I switches, which is acceptable since there
296 aren't usually that many of them. */
297 static struct search_path *
298 remove_dup_dirs (pfile, head)
300 struct search_path *head;
302 struct search_path *prev = NULL, *cur, *other;
304 for (cur = head; cur; cur = cur->next)
306 for (other = head; other != cur; other = other->next)
307 if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
309 if (cur->sysp && !other->sysp)
312 "changing search order for system directory \"%s\"",
314 if (strcmp (cur->name, other->name))
316 " as it is the same as non-system directory \"%s\"",
320 " as it has already been specified as a non-system directory");
322 cur = remove_dup_dir (pfile, prev);
331 /* Merge the four include chains together in the order quote, bracket,
332 system, after. Remove duplicate dirs (as determined by
333 INO_T_EQ()). The system_include and after_include chains are never
334 referred to again after this function; all access is through the
335 bracket_include path. */
337 merge_include_chains (pfile)
340 struct search_path *quote, *brack, *systm, *qtail;
342 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
344 quote = pend->quote_head;
345 brack = pend->brack_head;
346 systm = pend->systm_head;
347 qtail = pend->quote_tail;
349 /* Paste together bracket, system, and after include chains. */
351 pend->systm_tail->next = pend->after_head;
353 systm = pend->after_head;
356 pend->brack_tail->next = systm;
360 /* This is a bit tricky. First we drop dupes from the quote-include
361 list. Then we drop dupes from the bracket-include list.
362 Finally, if qtail and brack are the same directory, we cut out
363 brack and move brack up to point to qtail.
365 We can't just merge the lists and then uniquify them because
366 then we may lose directories from the <> search path that should
367 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
368 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
369 -Ibar -I- -Ifoo -Iquux. */
371 remove_dup_dirs (pfile, brack);
372 qtail = remove_dup_dirs (pfile, quote);
378 /* If brack == qtail, remove brack as it's simpler. */
379 if (brack && INO_T_EQ (qtail->ino, brack->ino)
380 && qtail->dev == brack->dev)
381 brack = remove_dup_dir (pfile, qtail);
386 CPP_OPTION (pfile, quote_include) = quote;
387 CPP_OPTION (pfile, bracket_include) = brack;
390 /* A set of booleans indicating what CPP features each source language
397 char extended_numbers;
399 char dollars_in_ident;
400 char cplusplus_comments;
404 /* ??? Enable $ in identifiers in assembly? */
405 static const struct lang_flags lang_defaults[] =
406 { /* c99 objc c++ xnum trig dollar c++comm digr */
407 /* GNUC89 */ { 0, 0, 0, 1, 0, 1, 1, 1 },
408 /* GNUC99 */ { 1, 0, 0, 1, 0, 1, 1, 1 },
409 /* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0 },
410 /* STDC94 */ { 0, 0, 0, 0, 1, 0, 0, 1 },
411 /* STDC99 */ { 1, 0, 0, 1, 1, 0, 1, 1 },
412 /* GNUCXX */ { 0, 0, 1, 1, 0, 1, 1, 1 },
413 /* CXX98 */ { 0, 0, 1, 1, 1, 0, 1, 1 },
414 /* OBJC */ { 0, 1, 0, 1, 0, 1, 1, 1 },
415 /* OBJCXX */ { 0, 1, 1, 1, 0, 1, 1, 1 },
416 /* ASM */ { 0, 0, 0, 1, 0, 0, 1, 0 }
419 /* Sets internal flags correctly for a given language. */
421 set_lang (pfile, lang)
425 const struct lang_flags *l = &lang_defaults[(int) lang];
427 CPP_OPTION (pfile, lang) = lang;
429 CPP_OPTION (pfile, c99) = l->c99;
430 CPP_OPTION (pfile, objc) = l->objc;
431 CPP_OPTION (pfile, cplusplus) = l->cplusplus;
432 CPP_OPTION (pfile, extended_numbers) = l->extended_numbers;
433 CPP_OPTION (pfile, trigraphs) = l->trigraphs;
434 CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident;
435 CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments;
436 CPP_OPTION (pfile, digraphs) = l->digraphs;
440 static int opt_comp PARAMS ((const void *, const void *));
442 /* Run-time sorting of options array. */
447 return strcmp (((struct cl_option *) p1)->opt_text,
448 ((struct cl_option *) p2)->opt_text);
452 /* init initializes library global state. It might not need to
453 do anything depending on the platform and compiler. */
457 static int initialized = 0;
464 /* For non-ASCII hosts, the cl_options array needs to be sorted at
466 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
469 /* Set up the trigraph map. This doesn't need to do anything if
470 we were compiled with a compiler that supports C99 designated
472 init_trigraph_map ();
476 /* Initialize a cpp_reader structure. */
478 cpp_create_reader (lang)
483 /* Initialise this instance of the library if it hasn't been already. */
486 pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
488 set_lang (pfile, lang);
489 CPP_OPTION (pfile, warn_import) = 1;
490 CPP_OPTION (pfile, discard_comments) = 1;
491 CPP_OPTION (pfile, show_column) = 1;
492 CPP_OPTION (pfile, tabstop) = 8;
493 CPP_OPTION (pfile, operator_names) = 1;
494 #if DEFAULT_SIGNED_CHAR
495 CPP_OPTION (pfile, signed_char) = 1;
497 CPP_OPTION (pfile, signed_char) = 0;
500 CPP_OPTION (pfile, pending) =
501 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
503 /* It's simplest to just create this struct whether or not it will
505 pfile->deps = deps_init ();
507 /* Initialise the line map. Start at logical line 1, so we can use
508 a line number of zero for special states. */
509 init_line_maps (&pfile->line_maps);
512 /* Initialize lexer state. */
513 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
515 /* Set up static tokens. */
516 pfile->date.type = CPP_EOF;
517 pfile->avoid_paste.type = CPP_PADDING;
518 pfile->avoid_paste.val.source = NULL;
519 pfile->eof.type = CPP_EOF;
520 pfile->eof.flags = 0;
522 /* Create a token buffer for the lexer. */
523 _cpp_init_tokenrun (&pfile->base_run, 250);
524 pfile->cur_run = &pfile->base_run;
525 pfile->cur_token = pfile->base_run.base;
527 /* Initialise the base context. */
528 pfile->context = &pfile->base_context;
529 pfile->base_context.macro = 0;
530 pfile->base_context.prev = pfile->base_context.next = 0;
532 /* Aligned and unaligned storage. */
533 pfile->a_buff = _cpp_get_buff (pfile, 0);
534 pfile->u_buff = _cpp_get_buff (pfile, 0);
536 /* Initialise the buffer obstack. */
537 gcc_obstack_init (&pfile->buffer_ob);
539 _cpp_init_includes (pfile);
544 /* Free resources used by PFILE. Accessing PFILE after this function
545 returns leads to undefined behaviour. Returns the error count. */
551 struct search_path *dir, *dirn;
552 cpp_context *context, *contextn;
553 tokenrun *run, *runn;
555 while (CPP_BUFFER (pfile) != NULL)
556 _cpp_pop_buffer (pfile);
558 if (pfile->macro_buffer)
560 free ((PTR) pfile->macro_buffer);
561 pfile->macro_buffer = NULL;
562 pfile->macro_buffer_len = 0;
565 deps_free (pfile->deps);
566 obstack_free (&pfile->buffer_ob, 0);
568 _cpp_destroy_hashtable (pfile);
569 _cpp_cleanup_includes (pfile);
571 _cpp_free_buff (pfile->a_buff);
572 _cpp_free_buff (pfile->u_buff);
573 _cpp_free_buff (pfile->free_buffs);
575 for (run = &pfile->base_run; run; run = runn)
579 if (run != &pfile->base_run)
583 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
586 free ((PTR) dir->name);
590 for (context = pfile->base_context.next; context; context = contextn)
592 contextn = context->next;
596 free_line_maps (&pfile->line_maps);
598 result = pfile->errors;
605 /* This structure defines one built-in identifier. A node will be
606 entered in the hash table under the name NAME, with value VALUE (if
607 any). If flags has OPERATOR, the node's operator field is used; if
608 flags has BUILTIN the node's builtin field is used. Macros that are
609 known at build time should not be flagged BUILTIN, as then they do
610 not appear in macro dumps with e.g. -dM or -dD.
612 Two values are not compile time constants, so we tag
613 them in the FLAGS field instead:
614 VERS value is the global version_string, quoted
615 ULP value is the global user_label_prefix
617 Also, macros with CPLUS set in the flags field are entered only for C++. */
622 unsigned char builtin;
623 unsigned char operator;
624 unsigned short flags;
631 #define OPERATOR 0x10
633 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
634 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
635 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
636 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
637 static const struct builtin builtin_array[] =
639 B("__TIME__", BT_TIME),
640 B("__DATE__", BT_DATE),
641 B("__FILE__", BT_FILE),
642 B("__BASE_FILE__", BT_BASE_FILE),
643 B("__LINE__", BT_SPECLINE),
644 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
645 B("_Pragma", BT_PRAGMA),
647 X("__VERSION__", VERS),
648 X("__USER_LABEL_PREFIX__", ULP),
649 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
650 C("__HAVE_BUILTIN_SETJMP__", "1"),
651 #if USING_SJLJ_EXCEPTIONS
652 /* libgcc needs to know this. */
653 C("__USING_SJLJ_EXCEPTIONS__","1"),
655 #ifndef NO_BUILTIN_SIZE_TYPE
656 C("__SIZE_TYPE__", SIZE_TYPE),
658 #ifndef NO_BUILTIN_PTRDIFF_TYPE
659 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
661 #ifndef NO_BUILTIN_WCHAR_TYPE
662 C("__WCHAR_TYPE__", WCHAR_TYPE),
664 #ifndef NO_BUILTIN_WINT_TYPE
665 C("__WINT_TYPE__", WINT_TYPE),
667 #ifdef STDC_0_IN_SYSTEM_HEADERS
668 B("__STDC__", BT_STDC),
673 /* Named operators known to the preprocessor. These cannot be #defined
674 and always have their stated meaning. They are treated like normal
675 identifiers except for the type code and the meaning. Most of them
676 are only for C++ (but see iso646.h). */
677 O("and", CPP_AND_AND, CPLUS),
678 O("and_eq", CPP_AND_EQ, CPLUS),
679 O("bitand", CPP_AND, CPLUS),
680 O("bitor", CPP_OR, CPLUS),
681 O("compl", CPP_COMPL, CPLUS),
682 O("not", CPP_NOT, CPLUS),
683 O("not_eq", CPP_NOT_EQ, CPLUS),
684 O("or", CPP_OR_OR, CPLUS),
685 O("or_eq", CPP_OR_EQ, CPLUS),
686 O("xor", CPP_XOR, CPLUS),
687 O("xor_eq", CPP_XOR_EQ, CPLUS)
693 #define builtin_array_end (builtin_array + ARRAY_SIZE (builtin_array))
695 /* Subroutine of cpp_read_main_file; reads the builtins table above and
696 enters them, and language-specific macros, into the hash table. */
698 init_builtins (pfile)
701 const struct builtin *b;
703 for(b = builtin_array; b < builtin_array_end; b++)
705 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
708 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
711 if (b->flags & (OPERATOR | BUILTIN))
713 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
714 if (b->flags & OPERATOR)
716 hp->flags |= NODE_OPERATOR;
717 hp->value.operator = b->operator;
722 hp->flags |= NODE_BUILTIN | NODE_WARN;
723 hp->value.builtin = b->builtin;
726 else /* A standard macro of some kind. */
733 /* Allocate enough space for 'name "value"\n\0'. */
734 str = alloca (b->len + strlen (version_string) + 5);
735 sprintf (str, "%s \"%s\"\n", b->name, version_string);
740 val = CPP_OPTION (pfile, user_label_prefix);
744 /* Allocate enough space for "name value\n\0". */
745 str = alloca (b->len + strlen (val) + 3);
746 sprintf(str, "%s %s\n", b->name, val);
749 _cpp_define_builtin (pfile, str);
753 if (CPP_OPTION (pfile, cplusplus))
755 _cpp_define_builtin (pfile, "__cplusplus 1");
756 if (SUPPORTS_ONE_ONLY)
757 _cpp_define_builtin (pfile, "__GXX_WEAK__ 1");
759 _cpp_define_builtin (pfile, "__GXX_WEAK__ 0");
761 if (CPP_OPTION (pfile, objc))
762 _cpp_define_builtin (pfile, "__OBJC__ 1");
764 if (CPP_OPTION (pfile, lang) == CLK_STDC94)
765 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
766 else if (CPP_OPTION (pfile, c99))
767 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
769 if (CPP_OPTION (pfile, signed_char) == 0)
770 _cpp_define_builtin (pfile, "__CHAR_UNSIGNED__ 1");
772 if (CPP_OPTION (pfile, lang) == CLK_STDC89
773 || CPP_OPTION (pfile, lang) == CLK_STDC94
774 || CPP_OPTION (pfile, lang) == CLK_STDC99)
775 _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1");
776 else if (CPP_OPTION (pfile, lang) == CLK_ASM)
777 _cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
784 #undef builtin_array_end
786 /* And another subroutine. This one sets up the standard include path. */
788 init_standard_includes (pfile)
792 const struct default_include *p;
793 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
795 /* Several environment variables may add to the include search path.
796 CPATH specifies an additional list of directories to be searched
797 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
798 etc. specify an additional list of directories to be searched as
799 if specified with -isystem, for the language indicated. */
801 GET_ENV_PATH_LIST (path, "CPATH");
802 if (path != 0 && *path != 0)
803 path_include (pfile, path, BRACKET);
805 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
808 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
811 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
814 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
817 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
820 if (path != 0 && *path != 0)
821 path_include (pfile, path, SYSTEM);
823 /* Search "translated" versions of GNU directories.
824 These have /usr/local/lib/gcc... replaced by specd_prefix. */
825 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
827 /* Remove the `include' from /usr/local/lib/gcc.../include.
828 GCC_INCLUDE_DIR will always end in /include. */
829 int default_len = cpp_GCC_INCLUDE_DIR_len;
830 char *default_prefix = (char *) alloca (default_len + 1);
831 int specd_len = strlen (specd_prefix);
833 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
834 default_prefix[default_len] = '\0';
836 for (p = cpp_include_defaults; p->fname; p++)
838 /* Some standard dirs are only for C++. */
840 || (CPP_OPTION (pfile, cplusplus)
841 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
843 /* Does this dir start with the prefix? */
844 if (!memcmp (p->fname, default_prefix, default_len))
846 /* Yes; change prefix and add to search list. */
847 int flen = strlen (p->fname);
848 int this_len = specd_len + flen - default_len;
849 char *str = (char *) xmalloc (this_len + 1);
850 memcpy (str, specd_prefix, specd_len);
851 memcpy (str + specd_len,
852 p->fname + default_len,
853 flen - default_len + 1);
855 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
861 /* Search ordinary names for GNU include directories. */
862 for (p = cpp_include_defaults; p->fname; p++)
864 /* Some standard dirs are only for C++. */
866 || (CPP_OPTION (pfile, cplusplus)
867 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
869 char *str = update_path (p->fname, p->component);
870 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
875 /* Pushes a command line -imacro and -include file indicated by P onto
876 the buffer stack. Returns non-zero if successful. */
878 push_include (pfile, p)
880 struct pending_option *p;
884 /* Later: maybe update this to use the #include "" search path
885 if cpp_read_file fails. */
886 header.type = CPP_STRING;
887 header.val.str.text = (const unsigned char *) p->arg;
888 header.val.str.len = strlen (p->arg);
889 /* Make the command line directive take up a line. */
892 return _cpp_execute_include (pfile, &header, IT_CMDLINE);
895 /* Frees a pending_option chain. */
898 struct pending_option *head;
900 struct pending_option *next;
910 /* This is called after options have been parsed, and partially
911 processed. Setup for processing input from the file named FNAME,
912 or stdin if it is the empty string. Return the original filename
913 on success (e.g. foo.i->foo.c), or NULL on failure. */
915 cpp_read_main_file (pfile, fname, table)
920 /* The front ends don't set up the hash table until they have
921 finished processing the command line options, so initializing the
922 hashtable is deferred until now. */
923 _cpp_init_hashtable (pfile, table);
925 /* Set up the include search path now. */
926 if (! CPP_OPTION (pfile, no_standard_includes))
927 init_standard_includes (pfile);
929 merge_include_chains (pfile);
931 /* With -v, print the list of dirs to search. */
932 if (CPP_OPTION (pfile, verbose))
934 struct search_path *l;
935 fprintf (stderr, _("#include \"...\" search starts here:\n"));
936 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
938 if (l == CPP_OPTION (pfile, bracket_include))
939 fprintf (stderr, _("#include <...> search starts here:\n"));
940 fprintf (stderr, " %s\n", l->name);
942 fprintf (stderr, _("End of search list.\n"));
945 if (CPP_OPTION (pfile, print_deps))
946 /* Set the default target (if there is none already). */
947 deps_add_default_target (pfile->deps, fname);
949 /* Open the main input file. */
950 if (!_cpp_read_file (pfile, fname))
953 /* Set this after cpp_post_options so the client can change the
954 option if it wishes, and after stacking the main file so we don't
955 trace the main file. */
956 pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names);
958 /* For foo.i, read the original filename foo.c now, for the benefit
959 of the front ends. */
960 if (CPP_OPTION (pfile, preprocessed))
961 read_original_filename (pfile);
963 return pfile->map->to_file;
966 /* For preprocessed files, if the first tokens are of the form # NUM.
967 handle the directive so we know the original file name. This will
968 generate file_change callbacks, which the front ends must handle
969 appropriately given their state of initialization. */
971 read_original_filename (pfile)
974 const cpp_token *token, *token1;
976 /* Lex ahead; if the first tokens are of the form # NUM, then
977 process the directive, otherwise back up. */
978 token = _cpp_lex_direct (pfile);
979 if (token->type == CPP_HASH)
981 token1 = _cpp_lex_direct (pfile);
982 _cpp_backup_tokens (pfile, 1);
984 /* If it's a #line directive, handle it. */
985 if (token1->type == CPP_NUMBER)
987 _cpp_handle_directive (pfile, token->flags & PREV_WHITE);
992 /* Backup as if nothing happened. */
993 _cpp_backup_tokens (pfile, 1);
996 /* Handle pending command line options: -D, -U, -A, -imacros and
997 -include. This should be called after debugging has been properly
998 set up in the front ends. */
1000 cpp_finish_options (pfile)
1003 /* Install builtins and process command line macros etc. in the order
1004 they appeared, but only if not already preprocessed. */
1005 if (! CPP_OPTION (pfile, preprocessed))
1007 struct pending_option *p;
1009 _cpp_do_file_change (pfile, LC_RENAME, _("<built-in>"), 1, 0);
1010 init_builtins (pfile);
1011 _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0);
1012 for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next)
1013 (*p->handler) (pfile, p->arg);
1015 /* Scan -imacros files after command line defines, but before
1016 files given with -include. */
1017 while ((p = CPP_OPTION (pfile, pending)->imacros_head) != NULL)
1019 if (push_include (pfile, p))
1021 pfile->buffer->return_at_eof = true;
1022 cpp_scan_nooutput (pfile);
1024 CPP_OPTION (pfile, pending)->imacros_head = p->next;
1029 free_chain (CPP_OPTION (pfile, pending)->directive_head);
1030 _cpp_push_next_buffer (pfile);
1033 /* Called to push the next buffer on the stack given by -include. If
1034 there are none, free the pending structure and restore the line map
1035 for the main file. */
1037 _cpp_push_next_buffer (pfile)
1040 bool pushed = false;
1042 /* This is't pretty; we'd rather not be relying on this as a boolean
1043 for reverting the line map. Further, we only free the chains in
1044 this conditional, so an early call to cpp_finish / cpp_destroy
1045 will leak that memory. */
1046 if (CPP_OPTION (pfile, pending)
1047 && CPP_OPTION (pfile, pending)->imacros_head == NULL)
1051 struct pending_option *p = CPP_OPTION (pfile, pending)->include_head;
1055 if (! CPP_OPTION (pfile, preprocessed))
1056 pushed = push_include (pfile, p);
1057 CPP_OPTION (pfile, pending)->include_head = p->next;
1063 free (CPP_OPTION (pfile, pending));
1064 CPP_OPTION (pfile, pending) = NULL;
1066 /* Restore the line map for the main file. */
1067 if (! CPP_OPTION (pfile, preprocessed))
1068 _cpp_do_file_change (pfile, LC_RENAME,
1069 pfile->line_maps.maps[0].to_file, 1, 0);
1076 /* Use mkdeps.c to output dependency information. */
1081 /* Stream on which to print the dependency information. */
1082 FILE *deps_stream = 0;
1083 const char *const deps_mode =
1084 CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
1086 if (CPP_OPTION (pfile, deps_file)[0] == '\0')
1087 deps_stream = stdout;
1090 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
1091 if (deps_stream == 0)
1093 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
1098 deps_write (pfile->deps, deps_stream, 72);
1100 if (CPP_OPTION (pfile, deps_phony_targets))
1101 deps_phony_targets (pfile->deps, deps_stream);
1103 /* Don't close stdout. */
1104 if (deps_stream != stdout)
1106 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1107 cpp_fatal (pfile, "I/O error on output");
1111 /* This is called at the end of preprocessing. It pops the
1112 last buffer and writes dependency output. It should also
1113 clear macro definitions, such that you could call cpp_start_read
1114 with a new filename to restart processing. */
1119 /* cpplex.c leaves the final buffer on the stack. This it so that
1120 it returns an unending stream of CPP_EOFs to the client. If we
1121 popped the buffer, we'd dereference a NULL buffer pointer and
1122 segfault. It's nice to allow the client to do worry-free excess
1123 cpp_get_token calls. */
1124 while (pfile->buffer)
1125 _cpp_pop_buffer (pfile);
1127 /* Don't write the deps file if preprocessing has failed. */
1128 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1129 output_deps (pfile);
1131 /* Report on headers that could use multiple include guards. */
1132 if (CPP_OPTION (pfile, print_include_names))
1133 _cpp_report_missing_guards (pfile);
1136 /* Add a directive to be handled later in the initialization phase. */
1138 new_pending_directive (pend, text, handler)
1139 struct cpp_pending *pend;
1141 cl_directive_handler handler;
1143 struct pending_option *o = (struct pending_option *)
1144 xmalloc (sizeof (struct pending_option));
1148 o->handler = handler;
1149 APPEND (pend, directive, o);
1152 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1153 I.e. a const string initializer with parens around it. That is
1154 what N_("string") resolves to, so we make no_* be macros instead. */
1155 #define no_arg N_("argument missing after %s")
1156 #define no_ass N_("assertion missing after %s")
1157 #define no_dir N_("directory name missing after %s")
1158 #define no_fil N_("file name missing after %s")
1159 #define no_mac N_("macro name missing after %s")
1160 #define no_pth N_("path name missing after %s")
1161 #define no_num N_("number missing after %s")
1162 #define no_tgt N_("target missing after %s")
1164 /* This is the list of all command line options, with the leading
1165 "-" removed. It must be sorted in ASCII collating order. */
1166 #define COMMAND_LINE_OPTIONS \
1167 DEF_OPT("$", 0, OPT_dollar) \
1168 DEF_OPT("+", 0, OPT_plus) \
1169 DEF_OPT("-help", 0, OPT__help) \
1170 DEF_OPT("-target-help", 0, OPT_target__help) \
1171 DEF_OPT("-version", 0, OPT__version) \
1172 DEF_OPT("A", no_ass, OPT_A) \
1173 DEF_OPT("C", 0, OPT_C) \
1174 DEF_OPT("D", no_mac, OPT_D) \
1175 DEF_OPT("H", 0, OPT_H) \
1176 DEF_OPT("I", no_dir, OPT_I) \
1177 DEF_OPT("M", 0, OPT_M) \
1178 DEF_OPT("MF", no_fil, OPT_MF) \
1179 DEF_OPT("MG", 0, OPT_MG) \
1180 DEF_OPT("MM", 0, OPT_MM) \
1181 DEF_OPT("MP", 0, OPT_MP) \
1182 DEF_OPT("MQ", no_tgt, OPT_MQ) \
1183 DEF_OPT("MT", no_tgt, OPT_MT) \
1184 DEF_OPT("P", 0, OPT_P) \
1185 DEF_OPT("U", no_mac, OPT_U) \
1186 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1187 DEF_OPT("d", no_arg, OPT_d) \
1188 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1189 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1190 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1191 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1192 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1193 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1194 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1195 DEF_OPT("fsigned-char", 0, OPT_fsigned_char) \
1196 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1197 DEF_OPT("funsigned-char", 0, OPT_funsigned_char) \
1198 DEF_OPT("h", 0, OPT_h) \
1199 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1200 DEF_OPT("imacros", no_fil, OPT_imacros) \
1201 DEF_OPT("include", no_fil, OPT_include) \
1202 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1203 DEF_OPT("isystem", no_dir, OPT_isystem) \
1204 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1205 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1206 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1207 DEF_OPT("lang-c", 0, OPT_lang_c) \
1208 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1209 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1210 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1211 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1212 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1213 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1214 DEF_OPT("o", no_fil, OPT_o) \
1215 DEF_OPT("pedantic", 0, OPT_pedantic) \
1216 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1217 DEF_OPT("remap", 0, OPT_remap) \
1218 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1219 DEF_OPT("std=c89", 0, OPT_std_c89) \
1220 DEF_OPT("std=c99", 0, OPT_std_c99) \
1221 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1222 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1223 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1224 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1225 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1226 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1227 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1228 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1229 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1230 DEF_OPT("v", 0, OPT_v) \
1231 DEF_OPT("version", 0, OPT_version) \
1232 DEF_OPT("w", 0, OPT_w)
1234 #define DEF_OPT(text, msg, code) code,
1237 COMMAND_LINE_OPTIONS
1244 const char *opt_text;
1247 enum opt_code opt_code;
1250 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1252 static struct cl_option cl_options[] =
1254 static const struct cl_option cl_options[] =
1257 COMMAND_LINE_OPTIONS
1260 #undef COMMAND_LINE_OPTIONS
1262 /* Perform a binary search to find which, if any, option the given
1263 command-line matches. Returns its index in the option array,
1264 negative on failure. Complications arise since some options can be
1265 suffixed with an argument, and multiple complete matches can occur,
1266 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to
1267 accept options beginning with -W that we do not recognise, but not
1268 to swallow any subsequent command line argument; this is handled as
1269 special cases in cpp_handle_option. */
1271 parse_option (input)
1274 unsigned int md, mn, mx;
1285 opt_len = cl_options[md].opt_len;
1286 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1294 if (input[opt_len] == '\0')
1296 /* We were passed more text. If the option takes an argument,
1297 we may match a later option or we may have been passed the
1298 argument. The longest possible option match succeeds.
1299 If the option takes no arguments we have not matched and
1300 continue the search (e.g. input="stdc++" match was "stdc"). */
1302 if (cl_options[md].msg)
1304 /* Scan forwards. If we get an exact match, return it.
1305 Otherwise, return the longest option-accepting match.
1306 This loops no more than twice with current options. */
1308 for (; mn < (unsigned int) N_OPTS; mn++)
1310 opt_len = cl_options[mn].opt_len;
1311 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1313 if (input[opt_len] == '\0')
1315 if (cl_options[mn].msg)
1326 /* Handle one command-line option in (argc, argv).
1327 Can be called multiple times, to handle multiple sets of options.
1328 If ignore is non-zero, this will ignore unrecognized -W* options.
1329 Returns number of strings consumed. */
1331 cpp_handle_option (pfile, argc, argv, ignore)
1338 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1340 /* Interpret "-" or a non-option as a file name. */
1341 if (argv[i][0] != '-' || argv[i][1] == '\0')
1343 if (CPP_OPTION (pfile, in_fname) == NULL)
1344 CPP_OPTION (pfile, in_fname) = argv[i];
1345 else if (CPP_OPTION (pfile, out_fname) == NULL)
1346 CPP_OPTION (pfile, out_fname) = argv[i];
1348 cpp_fatal (pfile, "too many filenames. Type %s --help for usage info",
1353 enum opt_code opt_code;
1355 const char *arg = 0;
1357 /* Skip over '-'. */
1358 opt_index = parse_option (&argv[i][1]);
1362 opt_code = cl_options[opt_index].opt_code;
1363 if (cl_options[opt_index].msg)
1365 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1367 /* Yuk. Special case for -W as it must not swallow
1368 up any following argument. If this becomes common, add
1369 another field to the cl_options table. */
1370 if (arg[0] == '\0' && opt_code != OPT_W)
1375 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1383 case N_OPTS: /* Shut GCC up. */
1385 case OPT_fleading_underscore:
1386 CPP_OPTION (pfile, user_label_prefix) = "_";
1388 case OPT_fno_leading_underscore:
1389 CPP_OPTION (pfile, user_label_prefix) = "";
1391 case OPT_fno_operator_names:
1392 CPP_OPTION (pfile, operator_names) = 0;
1394 case OPT_fpreprocessed:
1395 CPP_OPTION (pfile, preprocessed) = 1;
1397 case OPT_fno_preprocessed:
1398 CPP_OPTION (pfile, preprocessed) = 0;
1400 case OPT_fshow_column:
1401 CPP_OPTION (pfile, show_column) = 1;
1403 case OPT_fno_show_column:
1404 CPP_OPTION (pfile, show_column) = 0;
1406 case OPT_fsigned_char:
1407 CPP_OPTION (pfile, signed_char) = 1;
1409 case OPT_funsigned_char:
1410 CPP_OPTION (pfile, signed_char) = 0;
1413 /* Silently ignore empty string, non-longs and silly values. */
1417 long tabstop = strtol (arg, &endptr, 10);
1418 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1419 CPP_OPTION (pfile, tabstop) = tabstop;
1423 CPP_OPTION (pfile, inhibit_warnings) = 1;
1428 CPP_OPTION (pfile, help_only) = 1;
1430 case OPT_target__help:
1431 /* Print if any target specific options. cpplib has none, but
1432 make sure help_only gets set. */
1433 CPP_OPTION (pfile, help_only) = 1;
1436 /* --version inhibits compilation, -version doesn't. -v means
1437 verbose and -version. Historical reasons, don't ask. */
1439 CPP_OPTION (pfile, help_only) = 1;
1440 pfile->print_version = 1;
1443 CPP_OPTION (pfile, verbose) = 1;
1444 pfile->print_version = 1;
1447 pfile->print_version = 1;
1451 CPP_OPTION (pfile, discard_comments) = 0;
1454 CPP_OPTION (pfile, no_line_commands) = 1;
1456 case OPT_dollar: /* Don't include $ in identifiers. */
1457 CPP_OPTION (pfile, dollars_in_ident) = 0;
1460 CPP_OPTION (pfile, print_include_names) = 1;
1463 new_pending_directive (pend, arg, cpp_define);
1465 case OPT_pedantic_errors:
1466 CPP_OPTION (pfile, pedantic_errors) = 1;
1469 CPP_OPTION (pfile, pedantic) = 1;
1472 CPP_OPTION (pfile, trigraphs) = 1;
1475 CPP_OPTION (pfile, cplusplus) = 1;
1476 CPP_OPTION (pfile, cplusplus_comments) = 1;
1479 CPP_OPTION (pfile, remap) = 1;
1482 CPP_OPTION (pfile, include_prefix) = arg;
1483 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1486 set_lang (pfile, CLK_GNUC89);
1488 case OPT_lang_cplusplus:
1489 set_lang (pfile, CLK_GNUCXX);
1492 set_lang (pfile, CLK_OBJC);
1494 case OPT_lang_objcplusplus:
1495 set_lang (pfile, CLK_OBJCXX);
1498 set_lang (pfile, CLK_ASM);
1500 case OPT_std_cplusplus98:
1501 set_lang (pfile, CLK_CXX98);
1504 set_lang (pfile, CLK_GNUC89);
1508 set_lang (pfile, CLK_GNUC99);
1510 case OPT_std_iso9899_199409:
1511 set_lang (pfile, CLK_STDC94);
1513 case OPT_std_iso9899_1990:
1516 set_lang (pfile, CLK_STDC89);
1518 case OPT_std_iso9899_199x:
1519 case OPT_std_iso9899_1999:
1522 set_lang (pfile, CLK_STDC99);
1525 /* -nostdinc causes no default include directories.
1526 You must specify all include-file directories with -I. */
1527 CPP_OPTION (pfile, no_standard_includes) = 1;
1529 case OPT_nostdincplusplus:
1530 /* -nostdinc++ causes no default C++-specific include directories. */
1531 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1534 if (CPP_OPTION (pfile, out_fname) == NULL)
1535 CPP_OPTION (pfile, out_fname) = arg;
1538 cpp_fatal (pfile, "output filename specified twice");
1543 /* Args to -d specify what parts of macros to dump.
1544 Silently ignore unrecognised options; they may
1545 be aimed at the compiler proper. */
1549 while ((c = *arg++) != '\0')
1553 CPP_OPTION (pfile, dump_macros) = dump_only;
1554 CPP_OPTION (pfile, no_output) = 1;
1557 CPP_OPTION (pfile, dump_macros) = dump_names;
1560 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1563 CPP_OPTION (pfile, dump_includes) = 1;
1570 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1573 CPP_OPTION (pfile, print_deps) = 2;
1576 CPP_OPTION (pfile, print_deps) = 1;
1579 CPP_OPTION (pfile, deps_file) = arg;
1582 CPP_OPTION (pfile, deps_phony_targets) = 1;
1586 /* Add a target. -MQ quotes for Make. */
1587 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1593 /* -A with an argument beginning with '-' acts as
1594 #unassert on whatever immediately follows the '-'.
1595 If "-" is the whole argument, we eliminate all
1596 predefined macros and assertions, including those
1597 that were specified earlier on the command line.
1598 That way we can get rid of any that were passed
1599 automatically in from GCC. */
1603 free_chain (pend->directive_head);
1604 pend->directive_head = NULL;
1605 pend->directive_tail = NULL;
1608 new_pending_directive (pend, arg + 1, cpp_unassert);
1611 new_pending_directive (pend, arg, cpp_assert);
1614 new_pending_directive (pend, arg, cpp_undef);
1616 case OPT_I: /* Add directory to path for includes. */
1617 if (!strcmp (arg, "-"))
1620 Use the preceding -I directories for #include "..."
1621 but not #include <...>.
1622 Don't search the directory of the present file
1623 for #include "...". (Note that -I. -I- is not the same as
1624 the default setup; -I. uses the compiler's working dir.) */
1625 if (! CPP_OPTION (pfile, ignore_srcdir))
1627 pend->quote_head = pend->brack_head;
1628 pend->quote_tail = pend->brack_tail;
1629 pend->brack_head = 0;
1630 pend->brack_tail = 0;
1631 CPP_OPTION (pfile, ignore_srcdir) = 1;
1635 cpp_fatal (pfile, "-I- specified twice");
1640 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1643 /* Add directory to beginning of system include path, as a system
1644 include directory. */
1645 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1650 struct pending_option *o = (struct pending_option *)
1651 xmalloc (sizeof (struct pending_option));
1655 if (opt_code == OPT_include)
1656 APPEND (pend, include, o);
1658 APPEND (pend, imacros, o);
1661 case OPT_iwithprefix:
1662 /* Add directory to end of path for includes,
1663 with the default prefix at the front of its name. */
1665 case OPT_iwithprefixbefore:
1666 /* Add directory to main path for includes,
1667 with the default prefix at the front of its name. */
1674 if (CPP_OPTION (pfile, include_prefix) != 0)
1676 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1677 fname = xmalloc (ipl + len + 1);
1678 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1679 memcpy (fname + ipl, arg, len + 1);
1681 else if (cpp_GCC_INCLUDE_DIR_len)
1683 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1684 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1685 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1688 fname = xstrdup (arg);
1690 append_include_chain (pfile, fname,
1691 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1695 /* Add directory to end of path for includes. */
1696 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1699 /* Silently ignore unrecognised options. */
1700 if (!strcmp (argv[i], "-Wall"))
1702 CPP_OPTION (pfile, warn_trigraphs) = 1;
1703 CPP_OPTION (pfile, warn_comments) = 1;
1705 else if (!strcmp (argv[i], "-Wtraditional"))
1706 CPP_OPTION (pfile, warn_traditional) = 1;
1707 else if (!strcmp (argv[i], "-Wtrigraphs"))
1708 CPP_OPTION (pfile, warn_trigraphs) = 1;
1709 else if (!strcmp (argv[i], "-Wcomment"))
1710 CPP_OPTION (pfile, warn_comments) = 1;
1711 else if (!strcmp (argv[i], "-Wcomments"))
1712 CPP_OPTION (pfile, warn_comments) = 1;
1713 else if (!strcmp (argv[i], "-Wundef"))
1714 CPP_OPTION (pfile, warn_undef) = 1;
1715 else if (!strcmp (argv[i], "-Wimport"))
1716 CPP_OPTION (pfile, warn_import) = 1;
1717 else if (!strcmp (argv[i], "-Werror"))
1718 CPP_OPTION (pfile, warnings_are_errors) = 1;
1719 else if (!strcmp (argv[i], "-Wsystem-headers"))
1720 CPP_OPTION (pfile, warn_system_headers) = 1;
1721 else if (!strcmp (argv[i], "-Wno-traditional"))
1722 CPP_OPTION (pfile, warn_traditional) = 0;
1723 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1724 CPP_OPTION (pfile, warn_trigraphs) = 0;
1725 else if (!strcmp (argv[i], "-Wno-comment"))
1726 CPP_OPTION (pfile, warn_comments) = 0;
1727 else if (!strcmp (argv[i], "-Wno-comments"))
1728 CPP_OPTION (pfile, warn_comments) = 0;
1729 else if (!strcmp (argv[i], "-Wno-undef"))
1730 CPP_OPTION (pfile, warn_undef) = 0;
1731 else if (!strcmp (argv[i], "-Wno-import"))
1732 CPP_OPTION (pfile, warn_import) = 0;
1733 else if (!strcmp (argv[i], "-Wno-error"))
1734 CPP_OPTION (pfile, warnings_are_errors) = 0;
1735 else if (!strcmp (argv[i], "-Wno-system-headers"))
1736 CPP_OPTION (pfile, warn_system_headers) = 0;
1745 /* Handle command-line options in (argc, argv).
1746 Can be called multiple times, to handle multiple sets of options.
1747 Returns if an unrecognized option is seen.
1748 Returns number of strings consumed. */
1750 cpp_handle_options (pfile, argc, argv)
1756 int strings_processed;
1758 for (i = 0; i < argc; i += strings_processed)
1760 strings_processed = cpp_handle_option (pfile, argc - i, argv + i, 1);
1761 if (strings_processed == 0)
1768 /* Extra processing when all options are parsed, after all calls to
1769 cpp_handle_option[s]. Consistency checks etc. */
1771 cpp_post_options (pfile)
1774 if (pfile->print_version)
1776 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1777 #ifdef TARGET_VERSION
1780 fputc ('\n', stderr);
1783 /* Canonicalize in_fname and out_fname. We guarantee they are not
1784 NULL, and that the empty string represents stdin / stdout. */
1785 if (CPP_OPTION (pfile, in_fname) == NULL
1786 || !strcmp (CPP_OPTION (pfile, in_fname), "-"))
1787 CPP_OPTION (pfile, in_fname) = "";
1789 if (CPP_OPTION (pfile, out_fname) == NULL
1790 || !strcmp (CPP_OPTION (pfile, out_fname), "-"))
1791 CPP_OPTION (pfile, out_fname) = "";
1793 /* -Wtraditional is not useful in C++ mode. */
1794 if (CPP_OPTION (pfile, cplusplus))
1795 CPP_OPTION (pfile, warn_traditional) = 0;
1797 /* Set this if it hasn't been set already. */
1798 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1799 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1801 /* Permanently disable macro expansion if we are rescanning
1802 preprocessed text. */
1803 if (CPP_OPTION (pfile, preprocessed))
1804 pfile->state.prevent_expansion = 1;
1806 /* We need to do this after option processing and before
1807 cpp_start_read, as cppmain.c relies on the options->no_output to
1808 set its callbacks correctly before calling cpp_start_read. */
1809 init_dependency_output (pfile);
1811 /* After checking the environment variables, check if -M or -MM has
1812 not been specified, but other -M options have. */
1813 if (CPP_OPTION (pfile, print_deps) == 0 &&
1814 (CPP_OPTION (pfile, print_deps_missing_files)
1815 || CPP_OPTION (pfile, deps_file)
1816 || CPP_OPTION (pfile, deps_phony_targets)))
1817 cpp_fatal (pfile, "you must additionally specify either -M or -MM");
1820 /* Set up dependency-file output. On exit, if print_deps is non-zero
1821 then deps_file is not NULL; stdout is the empty string. */
1823 init_dependency_output (pfile)
1826 char *spec, *s, *output_file;
1828 /* Either of two environment variables can specify output of deps.
1829 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1830 where OUTPUT_FILE is the file to write deps info to
1831 and DEPS_TARGET is the target to mention in the deps. */
1833 if (CPP_OPTION (pfile, print_deps) == 0)
1835 spec = getenv ("DEPENDENCIES_OUTPUT");
1837 CPP_OPTION (pfile, print_deps) = 1;
1840 spec = getenv ("SUNPRO_DEPENDENCIES");
1842 CPP_OPTION (pfile, print_deps) = 2;
1847 /* Find the space before the DEPS_TARGET, if there is one. */
1848 s = strchr (spec, ' ');
1851 /* Let the caller perform MAKE quoting. */
1852 deps_add_target (pfile->deps, s + 1, 0);
1853 output_file = (char *) xmalloc (s - spec + 1);
1854 memcpy (output_file, spec, s - spec);
1855 output_file[s - spec] = 0;
1860 /* Command line -MF overrides environment variables and default. */
1861 if (CPP_OPTION (pfile, deps_file) == 0)
1862 CPP_OPTION (pfile, deps_file) = output_file;
1864 CPP_OPTION (pfile, print_deps_append) = 1;
1866 else if (CPP_OPTION (pfile, deps_file) == 0)
1867 /* If -M or -MM was seen without -MF, default output to wherever
1868 was specified with -o. out_fname is non-NULL here. */
1869 CPP_OPTION (pfile, deps_file) = CPP_OPTION (pfile, out_fname);
1871 /* When doing dependencies, suppress normal preprocessed output.
1872 Still do -dM, -dI etc. as e.g. glibc depends on this. */
1873 CPP_OPTION (pfile, no_output) = 1;
1876 /* Handle --help output. */
1880 /* To keep the lines from getting too long for some compilers, limit
1881 to about 500 characters (6 lines) per chunk. */
1884 -include <file> Include the contents of <file> before other files\n\
1885 -imacros <file> Accept definition of macros in <file>\n\
1886 -iprefix <path> Specify <path> as a prefix for next two options\n\
1887 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1888 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1889 -isystem <dir> Add <dir> to the start of the system include path\n\
1892 -idirafter <dir> Add <dir> to the end of the system include path\n\
1893 -I <dir> Add <dir> to the end of the main include path\n\
1894 -I- Fine-grained include path control; see info docs\n\
1895 -nostdinc Do not search system include directories\n\
1896 (dirs specified with -isystem will still be used)\n\
1897 -nostdinc++ Do not search system include directories for C++\n\
1898 -o <file> Put output into <file>\n\
1901 -pedantic Issue all warnings demanded by strict ISO C\n\
1902 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1903 -trigraphs Support ISO C trigraphs\n\
1904 -lang-c Assume that the input sources are in C\n\
1905 -lang-c89 Assume that the input sources are in C89\n\
1908 -lang-c++ Assume that the input sources are in C++\n\
1909 -lang-objc Assume that the input sources are in ObjectiveC\n\
1910 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1911 -lang-asm Assume that the input sources are in assembler\n\
1914 -std=<std name> Specify the conformance standard; one of:\n\
1915 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1916 iso9899:199409, iso9899:1999\n\
1917 -+ Allow parsing of C++ style features\n\
1918 -w Inhibit warning messages\n\
1919 -Wtrigraphs Warn if trigraphs are encountered\n\
1920 -Wno-trigraphs Do not warn about trigraphs\n\
1921 -Wcomment{s} Warn if one comment starts inside another\n\
1924 -Wno-comment{s} Do not warn about comments\n\
1925 -Wtraditional Warn about features not present in traditional C\n\
1926 -Wno-traditional Do not warn about traditional C\n\
1927 -Wundef Warn if an undefined macro is used by #if\n\
1928 -Wno-undef Do not warn about testing undefined macros\n\
1929 -Wimport Warn about the use of the #import directive\n\
1932 -Wno-import Do not warn about the use of #import\n\
1933 -Werror Treat all warnings as errors\n\
1934 -Wno-error Do not treat warnings as errors\n\
1935 -Wsystem-headers Do not suppress warnings from system headers\n\
1936 -Wno-system-headers Suppress warnings from system headers\n\
1937 -Wall Enable all preprocessor warnings\n\
1940 -M Generate make dependencies\n\
1941 -MM As -M, but ignore system header files\n\
1942 -MD Generate make dependencies and compile\n\
1943 -MMD As -MD, but ignore system header files\n\
1944 -MF <file> Write dependency output to the given file\n\
1945 -MG Treat missing header file as generated files\n\
1948 -MP Generate phony targets for all headers\n\
1949 -MQ <target> Add a MAKE-quoted target\n\
1950 -MT <target> Add an unquoted target\n\
1953 -D<macro> Define a <macro> with string '1' as its value\n\
1954 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1955 -A<question>=<answer> Assert the <answer> to <question>\n\
1956 -A-<question>=<answer> Disable the <answer> to <question>\n\
1957 -U<macro> Undefine <macro> \n\
1958 -v Display the version number\n\
1961 -H Print the name of header files as they are used\n\
1962 -C Do not discard comments\n\
1963 -dM Display a list of macro definitions active at end\n\
1964 -dD Preserve macro definitions in output\n\
1965 -dN As -dD except that only the names are preserved\n\
1966 -dI Include #include directives in the output\n\
1969 -fpreprocessed Treat the input file as already preprocessed\n\
1970 -ftabstop=<number> Distance between tab stops for column reporting\n\
1971 -P Do not generate #line directives\n\
1972 -$ Do not allow '$' in identifiers\n\
1973 -remap Remap file names when including files\n\
1974 --version Display version information\n\
1975 -h or --help Display this information\n\