2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001 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)))
45 # if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
46 # define INO_T_EQ(a, b) 0
48 # define INO_T_EQ(a, b) ((a) == (b))
52 /* Internal structures and prototypes. */
54 /* A `struct pending_option' remembers one -D, -A, -U, -include, or
57 typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
60 struct pending_option *next;
62 cl_directive_handler handler;
65 /* The `pending' structure accumulates all the options that are not
66 actually processed until we hit cpp_start_read. It consists of
67 several lists, one for each type of option. We keep both head and
68 tail pointers for quick insertion. */
71 struct pending_option *directive_head, *directive_tail;
73 struct search_path *quote_head, *quote_tail;
74 struct search_path *brack_head, *brack_tail;
75 struct search_path *systm_head, *systm_tail;
76 struct search_path *after_head, *after_tail;
78 struct pending_option *imacros_head, *imacros_tail;
79 struct pending_option *include_head, *include_tail;
83 #define APPEND(pend, list, elt) \
84 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
85 else (pend)->list##_tail->next = (elt); \
86 (pend)->list##_tail = (elt); \
89 #define APPEND(pend, list, elt) \
90 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
91 else (pend)->list/**/_tail->next = (elt); \
92 (pend)->list/**/_tail = (elt); \
96 static void print_help PARAMS ((void));
97 static void path_include PARAMS ((cpp_reader *,
99 static void init_library PARAMS ((void));
100 static void init_builtins PARAMS ((cpp_reader *));
101 static void append_include_chain PARAMS ((cpp_reader *,
103 static struct search_path * remove_dup_dir PARAMS ((cpp_reader *,
104 struct search_path *));
105 static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *,
106 struct search_path *));
107 static void merge_include_chains PARAMS ((cpp_reader *));
108 static bool push_include PARAMS ((cpp_reader *,
109 struct pending_option *));
110 static void free_chain PARAMS ((struct pending_option *));
111 static void set_lang PARAMS ((cpp_reader *, enum c_lang));
112 static void init_dependency_output PARAMS ((cpp_reader *));
113 static void init_standard_includes PARAMS ((cpp_reader *));
114 static void new_pending_directive PARAMS ((struct cpp_pending *,
116 cl_directive_handler));
117 static void output_deps PARAMS ((cpp_reader *));
118 static int parse_option PARAMS ((const char *));
120 /* Fourth argument to append_include_chain: chain to use.
121 Note it's never asked to append to the quote chain. */
122 enum { BRACKET = 0, SYSTEM, AFTER };
124 /* If we have designated initializers (GCC >2.7) these tables can be
125 initialized, constant data. Otherwise, they have to be filled in at
127 #if HAVE_DESIGNATED_INITIALIZERS
129 #define init_trigraph_map() /* Nothing. */
130 #define TRIGRAPH_MAP \
131 __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = {
134 #define s(p, v) [p] = v,
138 #define TRIGRAPH_MAP U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
139 static void init_trigraph_map PARAMS ((void)) { \
140 unsigned char *x = _cpp_trigraph_map;
143 #define s(p, v) x[p] = v;
148 s('=', '#') s(')', ']') s('!', '|')
149 s('(', '[') s('\'', '^') s('>', '}')
150 s('/', '\\') s('<', '{') s('-', '~')
157 /* Given a colon-separated list of file names PATH,
158 add all the names to the search path for include files. */
161 path_include (pfile, list, path)
172 /* Find the end of this name. */
174 while (*q != 0 && *q != PATH_SEPARATOR) q++;
177 /* An empty name in the path stands for the current directory. */
178 name = (char *) xmalloc (2);
184 /* Otherwise use the directory that is named. */
185 name = (char *) xmalloc (q - p + 1);
186 memcpy (name, p, q - p);
190 append_include_chain (pfile, name, path, 0);
192 /* Advance past this name. */
200 /* Append DIR to include path PATH. DIR must be allocated on the
201 heap; this routine takes responsibility for freeing it. */
203 append_include_chain (pfile, dir, path, cxx_aware)
207 int cxx_aware ATTRIBUTE_UNUSED;
209 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
210 struct search_path *new;
219 _cpp_simplify_pathname (dir);
223 /* Dirs that don't exist are silently ignored. */
225 cpp_notice_from_errno (pfile, dir);
226 else if (CPP_OPTION (pfile, verbose))
227 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
232 if (!S_ISDIR (st.st_mode))
234 cpp_notice (pfile, "%s: Not a directory", dir);
240 if (len > pfile->max_include_len)
241 pfile->max_include_len = len;
243 new = (struct search_path *) xmalloc (sizeof (struct search_path));
246 new->ino = st.st_ino;
247 new->dev = st.st_dev;
248 /* Both systm and after include file lists should be treated as system
249 include files since these two lists are really just a concatenation
250 of one "system" list. */
251 if (path == SYSTEM || path == AFTER)
252 #ifdef NO_IMPLICIT_EXTERN_C
255 new->sysp = cxx_aware ? 1 : 2;
259 new->name_map = NULL;
264 case BRACKET: APPEND (pend, brack, new); break;
265 case SYSTEM: APPEND (pend, systm, new); break;
266 case AFTER: APPEND (pend, after, new); break;
270 /* Handle a duplicated include path. PREV is the link in the chain
271 before the duplicate. The duplicate is removed from the chain and
272 freed. Returns PREV. */
273 static struct search_path *
274 remove_dup_dir (pfile, prev)
276 struct search_path *prev;
278 struct search_path *cur = prev->next;
280 if (CPP_OPTION (pfile, verbose))
281 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
283 prev->next = cur->next;
284 free ((PTR) cur->name);
290 /* Remove duplicate directories from a chain. Returns the tail of the
291 chain, or NULL if the chain is empty. This algorithm is quadratic
292 in the number of -I switches, which is acceptable since there
293 aren't usually that many of them. */
294 static struct search_path *
295 remove_dup_dirs (pfile, head)
297 struct search_path *head;
299 struct search_path *prev = NULL, *cur, *other;
301 for (cur = head; cur; cur = cur->next)
303 for (other = head; other != cur; other = other->next)
304 if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
306 if (cur->sysp && !other->sysp)
309 "changing search order for system directory \"%s\"",
311 if (strcmp (cur->name, other->name))
313 " as it is the same as non-system directory \"%s\"",
317 " as it has already been specified as a non-system directory");
319 cur = remove_dup_dir (pfile, prev);
328 /* Merge the four include chains together in the order quote, bracket,
329 system, after. Remove duplicate dirs (as determined by
330 INO_T_EQ()). The system_include and after_include chains are never
331 referred to again after this function; all access is through the
332 bracket_include path.
334 For the future: Check if the directory is empty (but
335 how?) and possibly preload the include hash. */
338 merge_include_chains (pfile)
341 struct search_path *quote, *brack, *systm, *qtail;
343 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
345 quote = pend->quote_head;
346 brack = pend->brack_head;
347 systm = pend->systm_head;
348 qtail = pend->quote_tail;
350 /* Paste together bracket, system, and after include chains. */
352 pend->systm_tail->next = pend->after_head;
354 systm = pend->after_head;
357 pend->brack_tail->next = systm;
361 /* This is a bit tricky. First we drop dupes from the quote-include
362 list. Then we drop dupes from the bracket-include list.
363 Finally, if qtail and brack are the same directory, we cut out
364 brack and move brack up to point to qtail.
366 We can't just merge the lists and then uniquify them because
367 then we may lose directories from the <> search path that should
368 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
369 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
370 -Ibar -I- -Ifoo -Iquux. */
372 remove_dup_dirs (pfile, brack);
373 qtail = remove_dup_dirs (pfile, quote);
379 /* If brack == qtail, remove brack as it's simpler. */
380 if (INO_T_EQ (qtail->ino, brack->ino) && 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 /* Sets internal flags correctly for a given language, and defines
391 macros if necessary. */
398 char extended_numbers;
400 char dollars_in_ident;
401 char cplusplus_comments;
405 /* ??? Enable $ in identifiers in assembly? */
406 static const struct lang_flags lang_defaults[] =
407 { /* c99 objc c++ xnum trig dollar c++comm digr */
408 /* GNUC89 */ { 0, 0, 0, 1, 0, 1, 1, 1 },
409 /* GNUC99 */ { 1, 0, 0, 1, 0, 1, 1, 1 },
410 /* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0 },
411 /* STDC94 */ { 0, 0, 0, 0, 1, 0, 0, 1 },
412 /* STDC99 */ { 1, 0, 0, 1, 1, 0, 1, 1 },
413 /* GNUCXX */ { 0, 0, 1, 1, 0, 1, 1, 1 },
414 /* CXX98 */ { 0, 0, 1, 1, 1, 0, 1, 1 },
415 /* OBJC */ { 0, 1, 0, 1, 0, 1, 1, 1 },
416 /* OBJCXX */ { 0, 1, 1, 1, 0, 1, 1, 1 },
417 /* ASM */ { 0, 0, 0, 1, 0, 0, 1, 0 }
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. */
458 static int initialized = 0;
465 /* For non-ASCII hosts, the cl_options array needs to be sorted at
467 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
470 /* Set up the trigraph map. This doesn't need to do anything if
471 we were compiled with a compiler that supports C99 designated
473 init_trigraph_map ();
477 /* Initialize a cpp_reader structure. */
479 cpp_create_reader (table, lang)
483 struct spec_nodes *s;
486 /* Initialise this instance of the library if it hasn't been already. */
489 pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
491 set_lang (pfile, lang);
492 CPP_OPTION (pfile, warn_import) = 1;
493 CPP_OPTION (pfile, discard_comments) = 1;
494 CPP_OPTION (pfile, show_column) = 1;
495 CPP_OPTION (pfile, tabstop) = 8;
496 CPP_OPTION (pfile, operator_names) = 1;
498 CPP_OPTION (pfile, pending) =
499 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
501 /* It's simplest to just create this struct whether or not it will
503 pfile->deps = deps_init ();
505 /* Initialise the line map. Start at logical line 1, so we can use
506 a line number of zero for special states. */
507 init_line_maps (&pfile->line_maps);
510 /* Initialize lexer state. */
511 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
513 /* Set up static tokens. */
514 pfile->date.type = CPP_EOF;
515 pfile->avoid_paste.type = CPP_PADDING;
516 pfile->avoid_paste.val.source = NULL;
517 pfile->eof.type = CPP_EOF;
518 pfile->eof.flags = 0;
520 /* Create a token buffer for the lexer. */
521 _cpp_init_tokenrun (&pfile->base_run, 250);
522 pfile->cur_run = &pfile->base_run;
523 pfile->cur_token = pfile->base_run.base;
525 /* Initialise the base context. */
526 pfile->context = &pfile->base_context;
527 pfile->base_context.macro = 0;
528 pfile->base_context.prev = pfile->base_context.next = 0;
530 /* Identifier pool initially 8K. Unaligned, permanent pool. */
531 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
533 /* Argument pool initially 8K. Aligned, temporary pool. */
534 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
536 /* Macro pool initially 8K. Aligned, permanent pool. */
537 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
539 /* Initialise the buffer obstack. */
540 gcc_obstack_init (&pfile->buffer_ob);
542 /* Initialise the hashtable. */
543 _cpp_init_hashtable (pfile, table);
545 _cpp_init_directives (pfile);
546 _cpp_init_includes (pfile);
547 _cpp_init_internal_pragmas (pfile);
549 /* Initialize the special nodes. */
550 s = &pfile->spec_nodes;
551 s->n_L = cpp_lookup (pfile, DSC("L"));
552 s->n_defined = cpp_lookup (pfile, DSC("defined"));
553 s->n_true = cpp_lookup (pfile, DSC("true"));
554 s->n_false = cpp_lookup (pfile, DSC("false"));
555 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
556 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
557 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
558 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
559 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
564 /* Free resources used by PFILE. Accessing PFILE after this function
565 returns leads to undefined behaviour. */
571 struct search_path *dir, *dirn;
572 cpp_context *context, *contextn;
573 tokenrun *run, *runn;
575 while (CPP_BUFFER (pfile) != NULL)
576 _cpp_pop_buffer (pfile);
578 if (pfile->macro_buffer)
580 free ((PTR) pfile->macro_buffer);
581 pfile->macro_buffer = NULL;
582 pfile->macro_buffer_len = 0;
585 deps_free (pfile->deps);
586 obstack_free (&pfile->buffer_ob, 0);
588 _cpp_destroy_hashtable (pfile);
589 _cpp_cleanup_includes (pfile);
591 _cpp_free_pool (&pfile->ident_pool);
592 _cpp_free_pool (&pfile->macro_pool);
593 _cpp_free_pool (&pfile->argument_pool);
595 for (run = &pfile->base_run; run; run = runn)
599 if (run != &pfile->base_run)
603 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
606 free ((PTR) dir->name);
610 for (context = pfile->base_context.next; context; context = contextn)
612 contextn = context->next;
616 free_line_maps (&pfile->line_maps);
618 result = pfile->errors;
625 /* This structure defines one built-in identifier. A node will be
626 entered in the hash table under the name NAME, with value VALUE (if
627 any). If flags has OPERATOR, the node's operator field is used; if
628 flags has BUILTIN the node's builtin field is used. Macros that are
629 known at build time should not be flagged BUILTIN, as then they do
630 not appear in macro dumps with e.g. -dM or -dD.
632 Two values are not compile time constants, so we tag
633 them in the FLAGS field instead:
634 VERS value is the global version_string, quoted
635 ULP value is the global user_label_prefix
637 Also, macros with CPLUS set in the flags field are entered only for C++. */
643 unsigned char builtin;
644 unsigned char operator;
645 unsigned short flags;
652 #define OPERATOR 0x10
654 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
655 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
656 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
657 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
658 static const struct builtin builtin_array[] =
660 B("__TIME__", BT_TIME),
661 B("__DATE__", BT_DATE),
662 B("__FILE__", BT_FILE),
663 B("__BASE_FILE__", BT_BASE_FILE),
664 B("__LINE__", BT_SPECLINE),
665 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
667 X("__VERSION__", VERS),
668 X("__USER_LABEL_PREFIX__", ULP),
669 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
670 C("__HAVE_BUILTIN_SETJMP__", "1"),
671 #ifndef NO_BUILTIN_SIZE_TYPE
672 C("__SIZE_TYPE__", SIZE_TYPE),
674 #ifndef NO_BUILTIN_PTRDIFF_TYPE
675 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
677 #ifndef NO_BUILTIN_WCHAR_TYPE
678 C("__WCHAR_TYPE__", WCHAR_TYPE),
680 #ifndef NO_BUILTIN_WINT_TYPE
681 C("__WINT_TYPE__", WINT_TYPE),
683 #ifdef STDC_0_IN_SYSTEM_HEADERS
684 B("__STDC__", BT_STDC),
689 /* Named operators known to the preprocessor. These cannot be #defined
690 and always have their stated meaning. They are treated like normal
691 identifiers except for the type code and the meaning. Most of them
692 are only for C++ (but see iso646.h). */
693 O("and", CPP_AND_AND, CPLUS),
694 O("and_eq", CPP_AND_EQ, CPLUS),
695 O("bitand", CPP_AND, CPLUS),
696 O("bitor", CPP_OR, CPLUS),
697 O("compl", CPP_COMPL, CPLUS),
698 O("not", CPP_NOT, CPLUS),
699 O("not_eq", CPP_NOT_EQ, CPLUS),
700 O("or", CPP_OR_OR, CPLUS),
701 O("or_eq", CPP_OR_EQ, CPLUS),
702 O("xor", CPP_XOR, CPLUS),
703 O("xor_eq", CPP_XOR_EQ, CPLUS)
709 #define builtin_array_end \
710 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
712 /* Subroutine of cpp_start_read; reads the builtins table above and
713 enters the macros into the hash table. */
715 init_builtins (pfile)
718 const struct builtin *b;
720 for(b = builtin_array; b < builtin_array_end; b++)
722 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
725 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
728 if (b->flags & (OPERATOR | BUILTIN))
730 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
731 if (b->flags & OPERATOR)
733 hp->flags |= NODE_OPERATOR;
734 hp->value.operator = b->operator;
739 hp->flags |= NODE_BUILTIN | NODE_WARN;
740 hp->value.builtin = b->builtin;
743 else /* A standard macro of some kind. */
750 /* Allocate enough space for 'name "value"\n\0'. */
751 str = alloca (b->len + strlen (version_string) + 5);
752 sprintf (str, "%s \"%s\"\n", b->name, version_string);
757 val = CPP_OPTION (pfile, user_label_prefix);
761 /* Allocate enough space for "name value\n\0". */
762 str = alloca (b->len + strlen (val) + 3);
763 sprintf(str, "%s %s\n", b->name, val);
766 _cpp_define_builtin (pfile, str);
770 if (CPP_OPTION (pfile, cplusplus))
772 _cpp_define_builtin (pfile, "__cplusplus 1");
773 if (SUPPORTS_ONE_ONLY)
774 _cpp_define_builtin (pfile, "__GXX_WEAK__ 1");
776 _cpp_define_builtin (pfile, "__GXX_WEAK__ 0");
778 if (CPP_OPTION (pfile, objc))
779 _cpp_define_builtin (pfile, "__OBJC__ 1");
781 if (CPP_OPTION (pfile, lang) == CLK_STDC94)
782 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
783 else if (CPP_OPTION (pfile, c99))
784 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
786 if (CPP_OPTION (pfile, lang) == CLK_STDC89
787 || CPP_OPTION (pfile, lang) == CLK_STDC94
788 || CPP_OPTION (pfile, lang) == CLK_STDC99)
789 _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1");
790 else if (CPP_OPTION (pfile, lang) == CLK_ASM)
791 _cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
798 #undef builtin_array_end
800 /* And another subroutine. This one sets up the standard include path. */
802 init_standard_includes (pfile)
806 const struct default_include *p;
807 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
809 /* Several environment variables may add to the include search path.
810 CPATH specifies an additional list of directories to be searched
811 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
812 etc. specify an additional list of directories to be searched as
813 if specified with -isystem, for the language indicated. */
815 GET_ENV_PATH_LIST (path, "CPATH");
816 if (path != 0 && *path != 0)
817 path_include (pfile, path, BRACKET);
819 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
822 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
825 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
828 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
831 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
834 if (path != 0 && *path != 0)
835 path_include (pfile, path, SYSTEM);
837 /* Search "translated" versions of GNU directories.
838 These have /usr/local/lib/gcc... replaced by specd_prefix. */
839 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
841 /* Remove the `include' from /usr/local/lib/gcc.../include.
842 GCC_INCLUDE_DIR will always end in /include. */
843 int default_len = cpp_GCC_INCLUDE_DIR_len;
844 char *default_prefix = (char *) alloca (default_len + 1);
845 int specd_len = strlen (specd_prefix);
847 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
848 default_prefix[default_len] = '\0';
850 for (p = cpp_include_defaults; p->fname; p++)
852 /* Some standard dirs are only for C++. */
854 || (CPP_OPTION (pfile, cplusplus)
855 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
857 /* Does this dir start with the prefix? */
858 if (!memcmp (p->fname, default_prefix, default_len))
860 /* Yes; change prefix and add to search list. */
861 int flen = strlen (p->fname);
862 int this_len = specd_len + flen - default_len;
863 char *str = (char *) xmalloc (this_len + 1);
864 memcpy (str, specd_prefix, specd_len);
865 memcpy (str + specd_len,
866 p->fname + default_len,
867 flen - default_len + 1);
869 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
875 /* Search ordinary names for GNU include directories. */
876 for (p = cpp_include_defaults; p->fname; p++)
878 /* Some standard dirs are only for C++. */
880 || (CPP_OPTION (pfile, cplusplus)
881 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
883 char *str = update_path (p->fname, p->component);
884 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
889 /* Pushes a -imacro and -include file given on the command line onto
890 the buffer stack. Returns non-zero if successful. */
892 push_include (pfile, p)
894 struct pending_option *p;
898 /* Later: maybe update this to use the #include "" search path
899 if cpp_read_file fails. */
900 header.type = CPP_STRING;
901 header.val.str.text = (const unsigned char *) p->arg;
902 header.val.str.len = strlen (p->arg);
903 /* Make the command line directive take up a line. */
906 return _cpp_execute_include (pfile, &header, IT_CMDLINE);
909 /* Frees a pending_option chain. */
912 struct pending_option *head;
914 struct pending_option *next;
924 /* This is called after options have been processed. Setup for
925 processing input from the file named FNAME, or stdin if it is the
926 empty string. Return 1 on success, 0 on failure. */
928 cpp_start_read (pfile, fname)
932 /* Set up the include search path now. */
933 if (! CPP_OPTION (pfile, no_standard_includes))
934 init_standard_includes (pfile);
936 merge_include_chains (pfile);
938 /* With -v, print the list of dirs to search. */
939 if (CPP_OPTION (pfile, verbose))
941 struct search_path *l;
942 fprintf (stderr, _("#include \"...\" search starts here:\n"));
943 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
945 if (l == CPP_OPTION (pfile, bracket_include))
946 fprintf (stderr, _("#include <...> search starts here:\n"));
947 fprintf (stderr, " %s\n", l->name);
949 fprintf (stderr, _("End of search list.\n"));
952 if (CPP_OPTION (pfile, print_deps))
953 /* Set the default target (if there is none already). */
954 deps_add_default_target (pfile->deps, fname);
956 /* Open the main input file. This must be done early, so we have a
957 buffer to stand on. */
958 if (!_cpp_read_file (pfile, fname))
961 /* Set this after cpp_post_options so the client can change the
962 option if it wishes, and after stacking the main file so we don't
963 trace the main file. */
964 pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names);
966 /* Install builtins and process command line macros etc. in the order
967 they appeared, but only if not already preprocessed. */
968 if (! CPP_OPTION (pfile, preprocessed))
970 struct pending_option *p;
972 _cpp_do_file_change (pfile, LC_RENAME, _("<builtin>"), 1, 0);
973 init_builtins (pfile);
974 _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0);
975 for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next)
976 (*p->handler) (pfile, p->arg);
978 /* Scan -imacros files after command line defines, but before
979 files given with -include. */
980 while ((p = CPP_OPTION (pfile, pending)->imacros_head) != NULL)
982 if (push_include (pfile, p))
984 pfile->buffer->return_at_eof = true;
985 cpp_scan_nooutput (pfile);
987 CPP_OPTION (pfile, pending)->imacros_head = p->next;
992 free_chain (CPP_OPTION (pfile, pending)->directive_head);
993 _cpp_push_next_buffer (pfile);
998 /* Called to push the next buffer on the stack given by -include. If
999 there are none, free the pending structure and restore the line map
1000 for the main file. */
1002 _cpp_push_next_buffer (pfile)
1005 bool pushed = false;
1007 /* This is't pretty; we'd rather not be relying on this as a boolean
1008 for reverting the line map. Further, we only free the chains in
1009 this conditional, so an early call to cpp_finish / cpp_destroy
1010 will leak that memory. */
1011 if (CPP_OPTION (pfile, pending)
1012 && CPP_OPTION (pfile, pending)->imacros_head == NULL)
1016 struct pending_option *p = CPP_OPTION (pfile, pending)->include_head;
1020 if (! CPP_OPTION (pfile, preprocessed))
1021 pushed = push_include (pfile, p);
1022 CPP_OPTION (pfile, pending)->include_head = p->next;
1028 free (CPP_OPTION (pfile, pending));
1029 CPP_OPTION (pfile, pending) = NULL;
1031 /* Restore the line map for the main file. */
1032 if (! CPP_OPTION (pfile, preprocessed))
1033 _cpp_do_file_change (pfile, LC_RENAME,
1034 pfile->line_maps.maps[0].to_file, 1, 0);
1041 /* Use mkdeps.c to output dependency information. */
1046 /* Stream on which to print the dependency information. */
1047 FILE *deps_stream = 0;
1048 const char *const deps_mode =
1049 CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
1051 if (CPP_OPTION (pfile, deps_file) == 0)
1052 deps_stream = stdout;
1055 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
1056 if (deps_stream == 0)
1058 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
1063 deps_write (pfile->deps, deps_stream, 72);
1065 if (CPP_OPTION (pfile, deps_phony_targets))
1066 deps_phony_targets (pfile->deps, deps_stream);
1068 /* Don't close stdout. */
1069 if (CPP_OPTION (pfile, deps_file))
1071 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1072 cpp_fatal (pfile, "I/O error on output");
1076 /* This is called at the end of preprocessing. It pops the
1077 last buffer and writes dependency output. It should also
1078 clear macro definitions, such that you could call cpp_start_read
1079 with a new filename to restart processing. */
1084 /* cpplex.c leaves the final buffer on the stack. This it so that
1085 it returns an unending stream of CPP_EOFs to the client. If we
1086 popped the buffer, we'd derefence a NULL buffer pointer and
1087 segfault. It's nice to allow the client to do worry-free excess
1088 cpp_get_token calls. */
1089 while (pfile->buffer)
1090 _cpp_pop_buffer (pfile);
1092 /* Don't write the deps file if preprocessing has failed. */
1093 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1094 output_deps (pfile);
1096 /* Report on headers that could use multiple include guards. */
1097 if (CPP_OPTION (pfile, print_include_names))
1098 _cpp_report_missing_guards (pfile);
1102 new_pending_directive (pend, text, handler)
1103 struct cpp_pending *pend;
1105 cl_directive_handler handler;
1107 struct pending_option *o = (struct pending_option *)
1108 xmalloc (sizeof (struct pending_option));
1112 o->handler = handler;
1113 APPEND (pend, directive, o);
1116 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1117 I.e. a const string initializer with parens around it. That is
1118 what N_("string") resolves to, so we make no_* be macros instead. */
1119 #define no_arg N_("Argument missing after %s")
1120 #define no_ass N_("Assertion missing after %s")
1121 #define no_dir N_("Directory name missing after %s")
1122 #define no_fil N_("File name missing after %s")
1123 #define no_mac N_("Macro name missing after %s")
1124 #define no_pth N_("Path name missing after %s")
1125 #define no_num N_("Number missing after %s")
1126 #define no_tgt N_("Target missing after %s")
1128 /* This is the list of all command line options, with the leading
1129 "-" removed. It must be sorted in ASCII collating order. */
1130 #define COMMAND_LINE_OPTIONS \
1131 DEF_OPT("$", 0, OPT_dollar) \
1132 DEF_OPT("+", 0, OPT_plus) \
1133 DEF_OPT("-help", 0, OPT__help) \
1134 DEF_OPT("-target-help", 0, OPT_target__help) \
1135 DEF_OPT("-version", 0, OPT__version) \
1136 DEF_OPT("A", no_ass, OPT_A) \
1137 DEF_OPT("C", 0, OPT_C) \
1138 DEF_OPT("D", no_mac, OPT_D) \
1139 DEF_OPT("H", 0, OPT_H) \
1140 DEF_OPT("I", no_dir, OPT_I) \
1141 DEF_OPT("M", 0, OPT_M) \
1142 DEF_OPT("MD", no_fil, OPT_MD) \
1143 DEF_OPT("MF", no_fil, OPT_MF) \
1144 DEF_OPT("MG", 0, OPT_MG) \
1145 DEF_OPT("MM", 0, OPT_MM) \
1146 DEF_OPT("MMD", no_fil, OPT_MMD) \
1147 DEF_OPT("MP", 0, OPT_MP) \
1148 DEF_OPT("MQ", no_tgt, OPT_MQ) \
1149 DEF_OPT("MT", no_tgt, OPT_MT) \
1150 DEF_OPT("P", 0, OPT_P) \
1151 DEF_OPT("U", no_mac, OPT_U) \
1152 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1153 DEF_OPT("d", no_arg, OPT_d) \
1154 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1155 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1156 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1157 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1158 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1159 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1160 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1161 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1162 DEF_OPT("h", 0, OPT_h) \
1163 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1164 DEF_OPT("imacros", no_fil, OPT_imacros) \
1165 DEF_OPT("include", no_fil, OPT_include) \
1166 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1167 DEF_OPT("isystem", no_dir, OPT_isystem) \
1168 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1169 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1170 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1171 DEF_OPT("lang-c", 0, OPT_lang_c) \
1172 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1173 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1174 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1175 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1176 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1177 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1178 DEF_OPT("o", no_fil, OPT_o) \
1179 DEF_OPT("pedantic", 0, OPT_pedantic) \
1180 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1181 DEF_OPT("remap", 0, OPT_remap) \
1182 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1183 DEF_OPT("std=c89", 0, OPT_std_c89) \
1184 DEF_OPT("std=c99", 0, OPT_std_c99) \
1185 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1186 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1187 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1188 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1189 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1190 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1191 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1192 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1193 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1194 DEF_OPT("v", 0, OPT_v) \
1195 DEF_OPT("version", 0, OPT_version) \
1196 DEF_OPT("w", 0, OPT_w)
1198 #define DEF_OPT(text, msg, code) code,
1201 COMMAND_LINE_OPTIONS
1208 const char *opt_text;
1211 enum opt_code opt_code;
1214 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1216 static struct cl_option cl_options[] =
1218 static const struct cl_option cl_options[] =
1221 COMMAND_LINE_OPTIONS
1224 #undef COMMAND_LINE_OPTIONS
1226 /* Perform a binary search to find which, if any, option the given
1227 command-line matches. Returns its index in the option array,
1228 negative on failure. Complications arise since some options can be
1229 suffixed with an argument, and multiple complete matches can occur,
1230 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to
1231 accept options beginning with -W that we do not recognise, but not
1232 to swallow any subsequent command line argument; this is handled as
1233 special cases in cpp_handle_option. */
1235 parse_option (input)
1238 unsigned int md, mn, mx;
1249 opt_len = cl_options[md].opt_len;
1250 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1258 if (input[opt_len] == '\0')
1260 /* We were passed more text. If the option takes an argument,
1261 we may match a later option or we may have been passed the
1262 argument. The longest possible option match succeeds.
1263 If the option takes no arguments we have not matched and
1264 continue the search (e.g. input="stdc++" match was "stdc"). */
1266 if (cl_options[md].msg)
1268 /* Scan forwards. If we get an exact match, return it.
1269 Otherwise, return the longest option-accepting match.
1270 This loops no more than twice with current options. */
1272 for (; mn < (unsigned int) N_OPTS; mn++)
1274 opt_len = cl_options[mn].opt_len;
1275 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1277 if (input[opt_len] == '\0')
1279 if (cl_options[mn].msg)
1290 /* Handle one command-line option in (argc, argv).
1291 Can be called multiple times, to handle multiple sets of options.
1292 Returns number of strings consumed. */
1295 cpp_handle_option (pfile, argc, argv)
1301 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1303 /* Interpret "-" or a non-option as a file name. */
1304 if (argv[i][0] != '-' || argv[i][1] == '\0')
1306 if (CPP_OPTION (pfile, in_fname) == NULL)
1307 CPP_OPTION (pfile, in_fname) = argv[i];
1308 else if (CPP_OPTION (pfile, out_fname) == NULL)
1309 CPP_OPTION (pfile, out_fname) = argv[i];
1311 cpp_fatal (pfile, "Too many filenames. Type %s --help for usage info",
1316 enum opt_code opt_code;
1318 const char *arg = 0;
1320 /* Skip over '-'. */
1321 opt_index = parse_option (&argv[i][1]);
1325 opt_code = cl_options[opt_index].opt_code;
1326 if (cl_options[opt_index].msg)
1328 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1330 /* Yuk. Special case for -W as it must not swallow
1331 up any following argument. If this becomes common, add
1332 another field to the cl_options table. */
1333 if (arg[0] == '\0' && opt_code != OPT_W)
1338 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1346 case N_OPTS: /* Shut GCC up. */
1348 case OPT_fleading_underscore:
1349 CPP_OPTION (pfile, user_label_prefix) = "_";
1351 case OPT_fno_leading_underscore:
1352 CPP_OPTION (pfile, user_label_prefix) = "";
1354 case OPT_fno_operator_names:
1355 CPP_OPTION (pfile, operator_names) = 0;
1357 case OPT_fpreprocessed:
1358 CPP_OPTION (pfile, preprocessed) = 1;
1360 case OPT_fno_preprocessed:
1361 CPP_OPTION (pfile, preprocessed) = 0;
1363 case OPT_fshow_column:
1364 CPP_OPTION (pfile, show_column) = 1;
1366 case OPT_fno_show_column:
1367 CPP_OPTION (pfile, show_column) = 0;
1370 /* Silently ignore empty string, non-longs and silly values. */
1374 long tabstop = strtol (arg, &endptr, 10);
1375 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1376 CPP_OPTION (pfile, tabstop) = tabstop;
1380 CPP_OPTION (pfile, inhibit_warnings) = 1;
1385 CPP_OPTION (pfile, help_only) = 1;
1387 case OPT_target__help:
1388 /* Print if any target specific options. cpplib has none, but
1389 make sure help_only gets set. */
1390 CPP_OPTION (pfile, help_only) = 1;
1393 /* --version inhibits compilation, -version doesn't. -v means
1394 verbose and -version. Historical reasons, don't ask. */
1396 CPP_OPTION (pfile, help_only) = 1;
1397 pfile->print_version = 1;
1400 CPP_OPTION (pfile, verbose) = 1;
1401 pfile->print_version = 1;
1404 pfile->print_version = 1;
1408 CPP_OPTION (pfile, discard_comments) = 0;
1411 CPP_OPTION (pfile, no_line_commands) = 1;
1413 case OPT_dollar: /* Don't include $ in identifiers. */
1414 CPP_OPTION (pfile, dollars_in_ident) = 0;
1417 CPP_OPTION (pfile, print_include_names) = 1;
1420 new_pending_directive (pend, arg, cpp_define);
1422 case OPT_pedantic_errors:
1423 CPP_OPTION (pfile, pedantic_errors) = 1;
1426 CPP_OPTION (pfile, pedantic) = 1;
1429 CPP_OPTION (pfile, trigraphs) = 1;
1432 CPP_OPTION (pfile, cplusplus) = 1;
1433 CPP_OPTION (pfile, cplusplus_comments) = 1;
1436 CPP_OPTION (pfile, remap) = 1;
1439 CPP_OPTION (pfile, include_prefix) = arg;
1440 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1443 set_lang (pfile, CLK_GNUC89);
1445 case OPT_lang_cplusplus:
1446 set_lang (pfile, CLK_GNUCXX);
1449 set_lang (pfile, CLK_OBJC);
1451 case OPT_lang_objcplusplus:
1452 set_lang (pfile, CLK_OBJCXX);
1455 set_lang (pfile, CLK_ASM);
1457 case OPT_std_cplusplus98:
1458 set_lang (pfile, CLK_CXX98);
1461 set_lang (pfile, CLK_GNUC89);
1465 set_lang (pfile, CLK_GNUC99);
1467 case OPT_std_iso9899_199409:
1468 set_lang (pfile, CLK_STDC94);
1470 case OPT_std_iso9899_1990:
1473 set_lang (pfile, CLK_STDC89);
1475 case OPT_std_iso9899_199x:
1476 case OPT_std_iso9899_1999:
1479 set_lang (pfile, CLK_STDC99);
1482 /* -nostdinc causes no default include directories.
1483 You must specify all include-file directories with -I. */
1484 CPP_OPTION (pfile, no_standard_includes) = 1;
1486 case OPT_nostdincplusplus:
1487 /* -nostdinc++ causes no default C++-specific include directories. */
1488 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1491 if (CPP_OPTION (pfile, out_fname) == NULL)
1492 CPP_OPTION (pfile, out_fname) = arg;
1495 cpp_fatal (pfile, "Output filename specified twice");
1500 /* Args to -d specify what parts of macros to dump.
1501 Silently ignore unrecognised options; they may
1502 be aimed at the compiler proper. */
1506 while ((c = *arg++) != '\0')
1510 CPP_OPTION (pfile, dump_macros) = dump_only;
1511 CPP_OPTION (pfile, no_output) = 1;
1514 CPP_OPTION (pfile, dump_macros) = dump_names;
1517 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1520 CPP_OPTION (pfile, dump_includes) = 1;
1527 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1530 CPP_OPTION (pfile, print_deps) = 2;
1533 CPP_OPTION (pfile, print_deps) = 1;
1536 CPP_OPTION (pfile, deps_file) = arg;
1539 CPP_OPTION (pfile, deps_phony_targets) = 1;
1543 /* Add a target. -MQ quotes for Make. */
1544 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1547 /* -MD and -MMD for cpp0 are deprecated and undocumented
1548 (use -M or -MM with -MF instead), and probably should be
1549 removed with the next major GCC version. For the moment
1550 we allow these for the benefit of Automake 1.4, which
1551 uses these when dependency tracking is enabled. Automake
1552 1.5 will fix this. */
1554 CPP_OPTION (pfile, print_deps) = 2;
1555 CPP_OPTION (pfile, deps_file) = arg;
1558 CPP_OPTION (pfile, print_deps) = 1;
1559 CPP_OPTION (pfile, deps_file) = arg;
1565 /* -A with an argument beginning with '-' acts as
1566 #unassert on whatever immediately follows the '-'.
1567 If "-" is the whole argument, we eliminate all
1568 predefined macros and assertions, including those
1569 that were specified earlier on the command line.
1570 That way we can get rid of any that were passed
1571 automatically in from GCC. */
1575 free_chain (pend->directive_head);
1576 pend->directive_head = NULL;
1577 pend->directive_tail = NULL;
1580 new_pending_directive (pend, arg + 1, cpp_unassert);
1583 new_pending_directive (pend, arg, cpp_assert);
1586 new_pending_directive (pend, arg, cpp_undef);
1588 case OPT_I: /* Add directory to path for includes. */
1589 if (!strcmp (arg, "-"))
1592 Use the preceding -I directories for #include "..."
1593 but not #include <...>.
1594 Don't search the directory of the present file
1595 for #include "...". (Note that -I. -I- is not the same as
1596 the default setup; -I. uses the compiler's working dir.) */
1597 if (! CPP_OPTION (pfile, ignore_srcdir))
1599 pend->quote_head = pend->brack_head;
1600 pend->quote_tail = pend->brack_tail;
1601 pend->brack_head = 0;
1602 pend->brack_tail = 0;
1603 CPP_OPTION (pfile, ignore_srcdir) = 1;
1607 cpp_fatal (pfile, "-I- specified twice");
1612 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1615 /* Add directory to beginning of system include path, as a system
1616 include directory. */
1617 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1622 struct pending_option *o = (struct pending_option *)
1623 xmalloc (sizeof (struct pending_option));
1627 if (opt_code == OPT_include)
1628 APPEND (pend, include, o);
1630 APPEND (pend, imacros, o);
1633 case OPT_iwithprefix:
1634 /* Add directory to end of path for includes,
1635 with the default prefix at the front of its name. */
1637 case OPT_iwithprefixbefore:
1638 /* Add directory to main path for includes,
1639 with the default prefix at the front of its name. */
1646 if (CPP_OPTION (pfile, include_prefix) != 0)
1648 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1649 fname = xmalloc (ipl + len + 1);
1650 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1651 memcpy (fname + ipl, arg, len + 1);
1653 else if (cpp_GCC_INCLUDE_DIR_len)
1655 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1656 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1657 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1660 fname = xstrdup (arg);
1662 append_include_chain (pfile, fname,
1663 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1667 /* Add directory to end of path for includes. */
1668 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1671 /* Silently ignore unrecognised options. */
1672 if (!strcmp (argv[i], "-Wall"))
1674 CPP_OPTION (pfile, warn_trigraphs) = 1;
1675 CPP_OPTION (pfile, warn_comments) = 1;
1677 else if (!strcmp (argv[i], "-Wtraditional"))
1678 CPP_OPTION (pfile, warn_traditional) = 1;
1679 else if (!strcmp (argv[i], "-Wtrigraphs"))
1680 CPP_OPTION (pfile, warn_trigraphs) = 1;
1681 else if (!strcmp (argv[i], "-Wcomment"))
1682 CPP_OPTION (pfile, warn_comments) = 1;
1683 else if (!strcmp (argv[i], "-Wcomments"))
1684 CPP_OPTION (pfile, warn_comments) = 1;
1685 else if (!strcmp (argv[i], "-Wundef"))
1686 CPP_OPTION (pfile, warn_undef) = 1;
1687 else if (!strcmp (argv[i], "-Wimport"))
1688 CPP_OPTION (pfile, warn_import) = 1;
1689 else if (!strcmp (argv[i], "-Werror"))
1690 CPP_OPTION (pfile, warnings_are_errors) = 1;
1691 else if (!strcmp (argv[i], "-Wsystem-headers"))
1692 CPP_OPTION (pfile, warn_system_headers) = 1;
1693 else if (!strcmp (argv[i], "-Wno-traditional"))
1694 CPP_OPTION (pfile, warn_traditional) = 0;
1695 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1696 CPP_OPTION (pfile, warn_trigraphs) = 0;
1697 else if (!strcmp (argv[i], "-Wno-comment"))
1698 CPP_OPTION (pfile, warn_comments) = 0;
1699 else if (!strcmp (argv[i], "-Wno-comments"))
1700 CPP_OPTION (pfile, warn_comments) = 0;
1701 else if (!strcmp (argv[i], "-Wno-undef"))
1702 CPP_OPTION (pfile, warn_undef) = 0;
1703 else if (!strcmp (argv[i], "-Wno-import"))
1704 CPP_OPTION (pfile, warn_import) = 0;
1705 else if (!strcmp (argv[i], "-Wno-error"))
1706 CPP_OPTION (pfile, warnings_are_errors) = 0;
1707 else if (!strcmp (argv[i], "-Wno-system-headers"))
1708 CPP_OPTION (pfile, warn_system_headers) = 0;
1715 /* Handle command-line options in (argc, argv).
1716 Can be called multiple times, to handle multiple sets of options.
1717 Returns if an unrecognized option is seen.
1718 Returns number of strings consumed. */
1720 cpp_handle_options (pfile, argc, argv)
1726 int strings_processed;
1728 for (i = 0; i < argc; i += strings_processed)
1730 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1731 if (strings_processed == 0)
1738 /* Extra processing when all options are parsed, after all calls to
1739 cpp_handle_option[s]. Consistency checks etc. */
1741 cpp_post_options (pfile)
1744 if (pfile->print_version)
1746 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1747 #ifdef TARGET_VERSION
1750 fputc ('\n', stderr);
1753 /* Canonicalize in_fname and out_fname. We guarantee they are not
1754 NULL, and that the empty string represents stdin / stdout. */
1755 if (CPP_OPTION (pfile, in_fname) == NULL
1756 || !strcmp (CPP_OPTION (pfile, in_fname), "-"))
1757 CPP_OPTION (pfile, in_fname) = "";
1759 if (CPP_OPTION (pfile, out_fname) == NULL
1760 || !strcmp (CPP_OPTION (pfile, out_fname), "-"))
1761 CPP_OPTION (pfile, out_fname) = "";
1763 /* -Wtraditional is not useful in C++ mode. */
1764 if (CPP_OPTION (pfile, cplusplus))
1765 CPP_OPTION (pfile, warn_traditional) = 0;
1767 /* Set this if it hasn't been set already. */
1768 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1769 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1771 /* Permanently disable macro expansion if we are rescanning
1772 preprocessed text. */
1773 if (CPP_OPTION (pfile, preprocessed))
1774 pfile->state.prevent_expansion = 1;
1776 /* We need to do this after option processing and before
1777 cpp_start_read, as cppmain.c relies on the options->no_output to
1778 set its callbacks correctly before calling cpp_start_read. */
1779 init_dependency_output (pfile);
1781 /* After checking the environment variables, check if -M or -MM has
1782 not been specified, but other -M options have. */
1783 if (CPP_OPTION (pfile, print_deps) == 0 &&
1784 (CPP_OPTION (pfile, print_deps_missing_files)
1785 || CPP_OPTION (pfile, deps_file)
1786 || CPP_OPTION (pfile, deps_phony_targets)))
1787 cpp_fatal (pfile, "you must additionally specify either -M or -MM");
1790 /* Set up dependency-file output. */
1792 init_dependency_output (pfile)
1795 char *spec, *s, *output_file;
1797 /* Either of two environment variables can specify output of deps.
1798 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1799 where OUTPUT_FILE is the file to write deps info to
1800 and DEPS_TARGET is the target to mention in the deps. */
1802 if (CPP_OPTION (pfile, print_deps) == 0)
1804 spec = getenv ("DEPENDENCIES_OUTPUT");
1806 CPP_OPTION (pfile, print_deps) = 1;
1809 spec = getenv ("SUNPRO_DEPENDENCIES");
1811 CPP_OPTION (pfile, print_deps) = 2;
1816 /* Find the space before the DEPS_TARGET, if there is one. */
1817 s = strchr (spec, ' ');
1820 /* Let the caller perform MAKE quoting. */
1821 deps_add_target (pfile->deps, s + 1, 0);
1822 output_file = (char *) xmalloc (s - spec + 1);
1823 memcpy (output_file, spec, s - spec);
1824 output_file[s - spec] = 0;
1829 /* Command line overrides environment variables. */
1830 if (CPP_OPTION (pfile, deps_file) == 0)
1831 CPP_OPTION (pfile, deps_file) = output_file;
1832 CPP_OPTION (pfile, print_deps_append) = 1;
1835 /* If dependencies go to standard output, or -MG is used, we should
1836 suppress output, including -dM, -dI etc. */
1837 if (CPP_OPTION (pfile, deps_file) == 0
1838 || CPP_OPTION (pfile, print_deps_missing_files))
1840 CPP_OPTION (pfile, no_output) = 1;
1841 CPP_OPTION (pfile, dump_macros) = 0;
1842 CPP_OPTION (pfile, dump_includes) = 0;
1849 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1850 /* To keep the lines from getting too long for some compilers, limit
1851 to about 500 characters (6 lines) per chunk. */
1854 -include <file> Include the contents of <file> before other files\n\
1855 -imacros <file> Accept definition of macros in <file>\n\
1856 -iprefix <path> Specify <path> as a prefix for next two options\n\
1857 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1858 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1859 -isystem <dir> Add <dir> to the start of the system include path\n\
1862 -idirafter <dir> Add <dir> to the end of the system include path\n\
1863 -I <dir> Add <dir> to the end of the main include path\n\
1864 -I- Fine-grained include path control; see info docs\n\
1865 -nostdinc Do not search system include directories\n\
1866 (dirs specified with -isystem will still be used)\n\
1867 -nostdinc++ Do not search system include directories for C++\n\
1868 -o <file> Put output into <file>\n\
1871 -pedantic Issue all warnings demanded by strict ISO C\n\
1872 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1873 -trigraphs Support ISO C trigraphs\n\
1874 -lang-c Assume that the input sources are in C\n\
1875 -lang-c89 Assume that the input sources are in C89\n\
1878 -lang-c++ Assume that the input sources are in C++\n\
1879 -lang-objc Assume that the input sources are in ObjectiveC\n\
1880 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1881 -lang-asm Assume that the input sources are in assembler\n\
1884 -std=<std name> Specify the conformance standard; one of:\n\
1885 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1886 iso9899:199409, iso9899:1999\n\
1887 -+ Allow parsing of C++ style features\n\
1888 -w Inhibit warning messages\n\
1889 -Wtrigraphs Warn if trigraphs are encountered\n\
1890 -Wno-trigraphs Do not warn about trigraphs\n\
1891 -Wcomment{s} Warn if one comment starts inside another\n\
1894 -Wno-comment{s} Do not warn about comments\n\
1895 -Wtraditional Warn about features not present in traditional C\n\
1896 -Wno-traditional Do not warn about traditional C\n\
1897 -Wundef Warn if an undefined macro is used by #if\n\
1898 -Wno-undef Do not warn about testing undefined macros\n\
1899 -Wimport Warn about the use of the #import directive\n\
1902 -Wno-import Do not warn about the use of #import\n\
1903 -Werror Treat all warnings as errors\n\
1904 -Wno-error Do not treat warnings as errors\n\
1905 -Wsystem-headers Do not suppress warnings from system headers\n\
1906 -Wno-system-headers Suppress warnings from system headers\n\
1907 -Wall Enable all preprocessor warnings\n\
1910 -M Generate make dependencies\n\
1911 -MM As -M, but ignore system header files\n\
1912 -MF <file> Write dependency output to the given file\n\
1913 -MG Treat missing header file as generated files\n\
1916 -MP Generate phony targets for all headers\n\
1917 -MQ <target> Add a MAKE-quoted target\n\
1918 -MT <target> Add an unquoted target\n\
1921 -D<macro> Define a <macro> with string '1' as its value\n\
1922 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1923 -A<question> (<answer>) Assert the <answer> to <question>\n\
1924 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1925 -U<macro> Undefine <macro> \n\
1926 -v Display the version number\n\
1929 -H Print the name of header files as they are used\n\
1930 -C Do not discard comments\n\
1931 -dM Display a list of macro definitions active at end\n\
1932 -dD Preserve macro definitions in output\n\
1933 -dN As -dD except that only the names are preserved\n\
1934 -dI Include #include directives in the output\n\
1937 -fpreprocessed Treat the input file as already preprocessed\n\
1938 -ftabstop=<number> Distance between tab stops for column reporting\n\
1939 -P Do not generate #line directives\n\
1940 -$ Do not allow '$' in identifiers\n\
1941 -remap Remap file names when including files.\n\
1942 --version Display version information\n\
1943 -h or --help Display this information\n\