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 struct search_path * remove_dup_dir PARAMS ((cpp_reader *,
104 struct search_path *));
105 struct search_path * remove_dup_dirs PARAMS ((cpp_reader *,
106 struct search_path *));
107 static void merge_include_chains PARAMS ((cpp_reader *));
108 static void do_includes PARAMS ((cpp_reader *,
109 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 permanently allocated
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;
216 _cpp_simplify_pathname (dir);
219 /* Dirs that don't exist are silently ignored. */
221 cpp_notice_from_errno (pfile, dir);
222 else if (CPP_OPTION (pfile, verbose))
223 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
227 if (!S_ISDIR (st.st_mode))
229 cpp_notice (pfile, "%s: Not a directory", dir);
234 if (len > pfile->max_include_len)
235 pfile->max_include_len = len;
237 new = (struct search_path *) xmalloc (sizeof (struct search_path));
240 new->ino = st.st_ino;
241 new->dev = st.st_dev;
242 /* Both systm and after include file lists should be treated as system
243 include files since these two lists are really just a concatenation
244 of one "system" list. */
245 if (path == SYSTEM || path == AFTER)
246 #ifdef NO_IMPLICIT_EXTERN_C
249 new->sysp = cxx_aware ? 1 : 2;
253 new->name_map = NULL;
258 case BRACKET: APPEND (pend, brack, new); break;
259 case SYSTEM: APPEND (pend, systm, new); break;
260 case AFTER: APPEND (pend, after, new); break;
264 /* Handle a duplicated include path. PREV is the link in the chain
265 before the duplicate. The duplicate is removed from the chain and
266 freed. Returns PREV. */
268 remove_dup_dir (pfile, prev)
270 struct search_path *prev;
272 struct search_path *cur = prev->next;
274 if (CPP_OPTION (pfile, verbose))
275 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
277 prev->next = cur->next;
278 free ((PTR) cur->name);
284 /* Remove duplicate directories from a chain. Returns the tail of the
285 chain, or NULL if the chain is empty. This algorithm is quadratic
286 in the number of -I switches, which is acceptable since there
287 aren't usually that many of them. */
289 remove_dup_dirs (pfile, head)
291 struct search_path *head;
293 struct search_path *prev = NULL, *cur, *other;
295 for (cur = head; cur; cur = cur->next)
297 for (other = head; other != cur; other = other->next)
298 if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
303 "changing search order for system directory \"%s\"",
305 if (strcmp (cur->name, other->name))
306 cpp_warning (pfile, other->sysp
307 ? " as it is the same as system directory \"%s\""
308 : " as it is the same as non-system directory \"%s\"",
311 cpp_warning (pfile, other->sysp
312 ? " as it has already been specified as a system directory"
313 : " as it has already been specified as a non-system directory");
315 cur = remove_dup_dir (pfile, prev);
324 /* Merge the four include chains together in the order quote, bracket,
325 system, after. Remove duplicate dirs (as determined by
326 INO_T_EQ()). The system_include and after_include chains are never
327 referred to again after this function; all access is through the
328 bracket_include path.
330 For the future: Check if the directory is empty (but
331 how?) and possibly preload the include hash. */
334 merge_include_chains (pfile)
337 struct search_path *quote, *brack, *systm, *qtail;
339 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
341 quote = pend->quote_head;
342 brack = pend->brack_head;
343 systm = pend->systm_head;
344 qtail = pend->quote_tail;
346 /* Paste together bracket, system, and after include chains. */
348 pend->systm_tail->next = pend->after_head;
350 systm = pend->after_head;
353 pend->brack_tail->next = systm;
357 /* This is a bit tricky. First we drop dupes from the quote-include
358 list. Then we drop dupes from the bracket-include list.
359 Finally, if qtail and brack are the same directory, we cut out
360 brack and move brack up to point to qtail.
362 We can't just merge the lists and then uniquify them because
363 then we may lose directories from the <> search path that should
364 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
365 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
366 -Ibar -I- -Ifoo -Iquux. */
368 remove_dup_dirs (pfile, brack);
369 qtail = remove_dup_dirs (pfile, quote);
375 /* If brack == qtail, remove brack as it's simpler. */
376 if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
377 brack = remove_dup_dir (pfile, qtail);
382 CPP_OPTION (pfile, quote_include) = quote;
383 CPP_OPTION (pfile, bracket_include) = brack;
386 /* Sets internal flags correctly for a given language, and defines
387 macros if necessary. */
394 char extended_numbers;
396 char dollars_in_ident;
397 char cplusplus_comments;
401 /* ??? Enable $ in identifiers in assembly? */
402 static const struct lang_flags lang_defaults[] =
403 { /* c99 objc c++ xnum trig dollar c++comm digr */
404 /* GNUC89 */ { 0, 0, 0, 1, 0, 1, 1, 1 },
405 /* GNUC99 */ { 1, 0, 0, 1, 0, 1, 1, 1 },
406 /* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0 },
407 /* STDC94 */ { 0, 0, 0, 0, 1, 0, 0, 1 },
408 /* STDC99 */ { 1, 0, 0, 1, 1, 0, 1, 1 },
409 /* GNUCXX */ { 0, 0, 1, 1, 0, 1, 1, 1 },
410 /* CXX98 */ { 0, 0, 1, 1, 1, 0, 1, 1 },
411 /* OBJC */ { 0, 1, 0, 1, 0, 1, 1, 1 },
412 /* OBJCXX */ { 0, 1, 1, 1, 0, 1, 1, 1 },
413 /* ASM */ { 0, 0, 0, 1, 0, 0, 1, 0 }
417 set_lang (pfile, lang)
421 const struct lang_flags *l = &lang_defaults[(int) lang];
423 CPP_OPTION (pfile, lang) = lang;
425 CPP_OPTION (pfile, c99) = l->c99;
426 CPP_OPTION (pfile, objc) = l->objc;
427 CPP_OPTION (pfile, cplusplus) = l->cplusplus;
428 CPP_OPTION (pfile, extended_numbers) = l->extended_numbers;
429 CPP_OPTION (pfile, trigraphs) = l->trigraphs;
430 CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident;
431 CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments;
432 CPP_OPTION (pfile, digraphs) = l->digraphs;
436 static int opt_comp PARAMS ((const void *, const void *));
438 /* Run-time sorting of options array. */
443 return strcmp (((struct cl_option *) p1)->opt_text,
444 ((struct cl_option *) p2)->opt_text);
448 /* init initializes library global state. It might not need to
449 do anything depending on the platform and compiler. */
454 static int initialized = 0;
461 /* For non-ASCII hosts, the cl_options array needs to be sorted at
463 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
466 /* Set up the trigraph map. This doesn't need to do anything if
467 we were compiled with a compiler that supports C99 designated
469 init_trigraph_map ();
473 /* Initialize a cpp_reader structure. */
475 cpp_create_reader (table, lang)
479 struct spec_nodes *s;
482 /* Initialise this instance of the library if it hasn't been already. */
485 pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
487 set_lang (pfile, lang);
488 CPP_OPTION (pfile, warn_import) = 1;
489 CPP_OPTION (pfile, discard_comments) = 1;
490 CPP_OPTION (pfile, show_column) = 1;
491 CPP_OPTION (pfile, tabstop) = 8;
492 CPP_OPTION (pfile, operator_names) = 1;
494 CPP_OPTION (pfile, pending) =
495 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
497 /* It's simplest to just create this struct whether or not it will
499 pfile->deps = deps_init ();
501 /* Initialize lexer state. */
502 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
504 /* Indicate date and time not yet calculated. */
505 pfile->date.type = CPP_EOF;
507 /* Initialise the base context. */
508 pfile->context = &pfile->base_context;
509 pfile->base_context.macro = 0;
510 pfile->base_context.prev = pfile->base_context.next = 0;
512 /* Identifier pool initially 8K. Unaligned, permanent pool. */
513 _cpp_init_pool (&pfile->ident_pool, 8 * 1024, 1, 0);
515 /* Argument pool initially 8K. Aligned, temporary pool. */
516 _cpp_init_pool (&pfile->argument_pool, 8 * 1024, 0, 1);
518 /* Macro pool initially 8K. Aligned, permanent pool. */
519 _cpp_init_pool (&pfile->macro_pool, 8 * 1024, 0, 0);
521 /* Initialise the buffer obstack. */
522 gcc_obstack_init (&pfile->buffer_ob);
524 /* Initialise the hashtable. */
525 _cpp_init_hashtable (pfile, table);
527 _cpp_init_directives (pfile);
528 _cpp_init_includes (pfile);
529 _cpp_init_internal_pragmas (pfile);
531 /* Initialize the special nodes. */
532 s = &pfile->spec_nodes;
533 s->n_L = cpp_lookup (pfile, DSC("L"));
534 s->n_defined = cpp_lookup (pfile, DSC("defined"));
535 s->n_true = cpp_lookup (pfile, DSC("true"));
536 s->n_false = cpp_lookup (pfile, DSC("false"));
537 s->n__Pragma = cpp_lookup (pfile, DSC("_Pragma"));
538 s->n__STRICT_ANSI__ = cpp_lookup (pfile, DSC("__STRICT_ANSI__"));
539 s->n__CHAR_UNSIGNED__ = cpp_lookup (pfile, DSC("__CHAR_UNSIGNED__"));
540 s->n__VA_ARGS__ = cpp_lookup (pfile, DSC("__VA_ARGS__"));
541 s->n__VA_ARGS__->flags |= NODE_DIAGNOSTIC;
546 /* Free resources used by PFILE. Accessing PFILE after this function
547 returns leads to undefined behaviour. */
553 struct search_path *dir, *dirn;
554 cpp_context *context, *contextn;
556 while (CPP_BUFFER (pfile) != NULL)
557 cpp_pop_buffer (pfile);
559 if (pfile->macro_buffer)
561 free ((PTR) pfile->macro_buffer);
562 pfile->macro_buffer = NULL;
563 pfile->macro_buffer_len = 0;
566 deps_free (pfile->deps);
567 obstack_free (&pfile->buffer_ob, 0);
569 _cpp_destroy_hashtable (pfile);
570 _cpp_cleanup_includes (pfile);
571 _cpp_free_lookaheads (pfile);
573 _cpp_free_pool (&pfile->ident_pool);
574 _cpp_free_pool (&pfile->macro_pool);
575 _cpp_free_pool (&pfile->argument_pool);
577 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
580 free ((PTR) dir->name);
584 for (context = pfile->base_context.next; context; context = contextn)
586 contextn = context->next;
590 result = pfile->errors;
597 /* This structure defines one built-in identifier. A node will be
598 entered in the hash table under the name NAME, with value VALUE (if
599 any). If flags has OPERATOR, the node's operator field is used; if
600 flags has BUILTIN the node's builtin field is used. Macros that are
601 known at build time should not be flagged BUILTIN, as then they do
602 not appear in macro dumps with e.g. -dM or -dD.
604 Two values are not compile time constants, so we tag
605 them in the FLAGS field instead:
606 VERS value is the global version_string, quoted
607 ULP value is the global user_label_prefix
609 Also, macros with CPLUS set in the flags field are entered only for C++. */
615 unsigned char builtin;
616 unsigned char operator;
617 unsigned short flags;
624 #define OPERATOR 0x10
626 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
627 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
628 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
629 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
630 static const struct builtin builtin_array[] =
632 B("__TIME__", BT_TIME),
633 B("__DATE__", BT_DATE),
634 B("__FILE__", BT_FILE),
635 B("__BASE_FILE__", BT_BASE_FILE),
636 B("__LINE__", BT_SPECLINE),
637 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
639 X("__VERSION__", VERS),
640 X("__USER_LABEL_PREFIX__", ULP),
641 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
642 C("__HAVE_BUILTIN_SETJMP__", "1"),
643 #ifndef NO_BUILTIN_SIZE_TYPE
644 C("__SIZE_TYPE__", SIZE_TYPE),
646 #ifndef NO_BUILTIN_PTRDIFF_TYPE
647 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
649 #ifndef NO_BUILTIN_WCHAR_TYPE
650 C("__WCHAR_TYPE__", WCHAR_TYPE),
652 #ifndef NO_BUILTIN_WINT_TYPE
653 C("__WINT_TYPE__", WINT_TYPE),
655 #ifdef STDC_0_IN_SYSTEM_HEADERS
656 B("__STDC__", BT_STDC),
661 /* Named operators known to the preprocessor. These cannot be #defined
662 and always have their stated meaning. They are treated like normal
663 identifiers except for the type code and the meaning. Most of them
664 are only for C++ (but see iso646.h). */
665 O("and", CPP_AND_AND, CPLUS),
666 O("and_eq", CPP_AND_EQ, CPLUS),
667 O("bitand", CPP_AND, CPLUS),
668 O("bitor", CPP_OR, CPLUS),
669 O("compl", CPP_COMPL, CPLUS),
670 O("not", CPP_NOT, CPLUS),
671 O("not_eq", CPP_NOT_EQ, CPLUS),
672 O("or", CPP_OR_OR, CPLUS),
673 O("or_eq", CPP_OR_EQ, CPLUS),
674 O("xor", CPP_XOR, CPLUS),
675 O("xor_eq", CPP_XOR_EQ, CPLUS)
681 #define builtin_array_end \
682 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
684 /* Subroutine of cpp_start_read; reads the builtins table above and
685 enters the macros into the hash table. */
687 init_builtins (pfile)
690 const struct builtin *b;
692 for(b = builtin_array; b < builtin_array_end; b++)
694 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
697 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
700 if (b->flags & (OPERATOR | BUILTIN))
702 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
703 if (b->flags & OPERATOR)
705 hp->flags |= NODE_OPERATOR;
706 hp->value.operator = b->operator;
711 hp->flags |= NODE_BUILTIN | NODE_WARN;
712 hp->value.builtin = b->builtin;
715 else /* A standard macro of some kind. */
722 /* Allocate enough space for 'name "value"\n\0'. */
723 str = alloca (b->len + strlen (version_string) + 5);
724 sprintf (str, "%s \"%s\"\n", b->name, version_string);
729 val = CPP_OPTION (pfile, user_label_prefix);
733 /* Allocate enough space for "name value\n\0". */
734 str = alloca (b->len + strlen (val) + 3);
735 sprintf(str, "%s %s\n", b->name, val);
738 _cpp_define_builtin (pfile, str);
742 if (CPP_OPTION (pfile, cplusplus))
744 _cpp_define_builtin (pfile, "__cplusplus 1");
745 if (SUPPORTS_ONE_ONLY)
746 _cpp_define_builtin (pfile, "__GXX_WEAK__ 1");
748 _cpp_define_builtin (pfile, "__GXX_WEAK__ 0");
750 if (CPP_OPTION (pfile, objc))
751 _cpp_define_builtin (pfile, "__OBJC__ 1");
753 if (CPP_OPTION (pfile, lang) == CLK_STDC94)
754 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
755 else if (CPP_OPTION (pfile, c99))
756 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
758 if (CPP_OPTION (pfile, lang) == CLK_STDC89
759 || CPP_OPTION (pfile, lang) == CLK_STDC94
760 || CPP_OPTION (pfile, lang) == CLK_STDC99)
761 _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1");
762 else if (CPP_OPTION (pfile, lang) == CLK_ASM)
763 _cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
770 #undef builtin_array_end
772 /* And another subroutine. This one sets up the standard include path. */
774 init_standard_includes (pfile)
778 const struct default_include *p;
779 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
781 /* Several environment variables may add to the include search path.
782 CPATH specifies an additional list of directories to be searched
783 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
784 etc. specify an additional list of directories to be searched as
785 if specified with -isystem, for the language indicated. */
787 GET_ENV_PATH_LIST (path, "CPATH");
788 if (path != 0 && *path != 0)
789 path_include (pfile, path, BRACKET);
791 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
794 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
797 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
800 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
803 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
806 if (path != 0 && *path != 0)
807 path_include (pfile, path, SYSTEM);
809 /* Search "translated" versions of GNU directories.
810 These have /usr/local/lib/gcc... replaced by specd_prefix. */
811 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
813 /* Remove the `include' from /usr/local/lib/gcc.../include.
814 GCC_INCLUDE_DIR will always end in /include. */
815 int default_len = cpp_GCC_INCLUDE_DIR_len;
816 char *default_prefix = (char *) alloca (default_len + 1);
817 int specd_len = strlen (specd_prefix);
819 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
820 default_prefix[default_len] = '\0';
822 for (p = cpp_include_defaults; p->fname; p++)
824 /* Some standard dirs are only for C++. */
826 || (CPP_OPTION (pfile, cplusplus)
827 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
829 /* Does this dir start with the prefix? */
830 if (!memcmp (p->fname, default_prefix, default_len))
832 /* Yes; change prefix and add to search list. */
833 int flen = strlen (p->fname);
834 int this_len = specd_len + flen - default_len;
835 char *str = (char *) xmalloc (this_len + 1);
836 memcpy (str, specd_prefix, specd_len);
837 memcpy (str + specd_len,
838 p->fname + default_len,
839 flen - default_len + 1);
841 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
847 /* Search ordinary names for GNU include directories. */
848 for (p = cpp_include_defaults; p->fname; p++)
850 /* Some standard dirs are only for C++. */
852 || (CPP_OPTION (pfile, cplusplus)
853 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
855 char *str = xstrdup (update_path (p->fname, p->component));
856 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
861 /* Handles -imacro and -include from the command line. */
863 do_includes (pfile, p, scan)
865 struct pending_option *p;
870 struct pending_option *q;
872 /* Don't handle if -fpreprocessed. Later: maybe update this to
873 use the #include "" search path if cpp_read_file fails. */
874 if (CPP_OPTION (pfile, preprocessed))
875 cpp_error (pfile, "-include and -imacros cannot be used with -fpreprocessed");
879 header.type = CPP_STRING;
880 header.val.str.text = (const unsigned char *) p->arg;
881 header.val.str.len = strlen (p->arg);
882 if (_cpp_execute_include (pfile, &header, IT_CMDLINE) && scan)
883 cpp_scan_buffer_nooutput (pfile, 0);
891 /* This is called after options have been processed. Setup for
892 processing input from the file named FNAME, or stdin if it is the
893 empty string. Return 1 on success, 0 on failure. */
895 cpp_start_read (pfile, fname)
899 struct pending_option *p, *q;
901 /* Set up the include search path now. */
902 if (! CPP_OPTION (pfile, no_standard_includes))
903 init_standard_includes (pfile);
905 merge_include_chains (pfile);
907 /* With -v, print the list of dirs to search. */
908 if (CPP_OPTION (pfile, verbose))
910 struct search_path *l;
911 fprintf (stderr, _("#include \"...\" search starts here:\n"));
912 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
914 if (l == CPP_OPTION (pfile, bracket_include))
915 fprintf (stderr, _("#include <...> search starts here:\n"));
916 fprintf (stderr, " %s\n", l->name);
918 fprintf (stderr, _("End of search list.\n"));
921 if (CPP_OPTION (pfile, print_deps))
922 /* Set the default target (if there is none already). */
923 deps_add_default_target (pfile->deps, fname);
925 /* Open the main input file. This must be done early, so we have a
926 buffer to stand on. */
927 if (!_cpp_read_file (pfile, fname))
930 /* If already preprocessed, don't install __LINE__, etc., and ignore
931 command line definitions and assertions. Handle -U's, -D's and
932 -A's in the order they were seen. */
933 if (! CPP_OPTION (pfile, preprocessed))
934 init_builtins (pfile);
936 p = CPP_OPTION (pfile, pending)->directive_head;
939 if (! CPP_OPTION (pfile, preprocessed))
940 (*p->handler) (pfile, p->arg);
946 /* The -imacros files can be scanned now, but the -include files
947 have to be pushed onto the buffer stack and processed later,
948 otherwise cppmain.c won't see the tokens. include_head was built
949 up as a stack, and popping this stack onto the buffer stack means
950 we preserve the order of the command line. */
951 do_includes (pfile, CPP_OPTION (pfile, pending)->imacros_head, 1);
952 do_includes (pfile, CPP_OPTION (pfile, pending)->include_head, 0);
954 free (CPP_OPTION (pfile, pending));
955 CPP_OPTION (pfile, pending) = NULL;
960 /* Use mkdeps.c to output dependency information. */
965 /* Stream on which to print the dependency information. */
966 FILE *deps_stream = 0;
967 const char *deps_mode = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
969 if (CPP_OPTION (pfile, deps_file) == 0)
970 deps_stream = stdout;
973 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
974 if (deps_stream == 0)
976 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
981 deps_write (pfile->deps, deps_stream, 72);
983 if (CPP_OPTION (pfile, deps_phony_targets))
984 deps_phony_targets (pfile->deps, deps_stream);
986 /* Don't close stdout. */
987 if (CPP_OPTION (pfile, deps_file))
989 if (ferror (deps_stream) || fclose (deps_stream) != 0)
990 cpp_fatal (pfile, "I/O error on output");
994 /* This is called at the end of preprocessing. It pops the
995 last buffer and writes dependency output. It should also
996 clear macro definitions, such that you could call cpp_start_read
997 with a new filename to restart processing. */
1002 if (CPP_BUFFER (pfile))
1004 cpp_ice (pfile, "buffers still stacked in cpp_finish");
1005 while (CPP_BUFFER (pfile))
1006 cpp_pop_buffer (pfile);
1009 /* Don't write the deps file if preprocessing has failed. */
1010 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1011 output_deps (pfile);
1013 /* Report on headers that could use multiple include guards. */
1014 if (CPP_OPTION (pfile, print_include_names))
1015 _cpp_report_missing_guards (pfile);
1019 new_pending_directive (pend, text, handler)
1020 struct cpp_pending *pend;
1022 cl_directive_handler handler;
1024 struct pending_option *o = (struct pending_option *)
1025 xmalloc (sizeof (struct pending_option));
1029 o->handler = handler;
1030 APPEND (pend, directive, o);
1033 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1034 I.e. a const string initializer with parens around it. That is
1035 what N_("string") resolves to, so we make no_* be macros instead. */
1036 #define no_arg N_("Argument missing after %s")
1037 #define no_ass N_("Assertion missing after %s")
1038 #define no_dir N_("Directory name missing after %s")
1039 #define no_fil N_("File name missing after %s")
1040 #define no_mac N_("Macro name missing after %s")
1041 #define no_pth N_("Path name missing after %s")
1042 #define no_num N_("Number missing after %s")
1043 #define no_tgt N_("Target missing after %s")
1045 /* This is the list of all command line options, with the leading
1046 "-" removed. It must be sorted in ASCII collating order. */
1047 #define COMMAND_LINE_OPTIONS \
1048 DEF_OPT("$", 0, OPT_dollar) \
1049 DEF_OPT("+", 0, OPT_plus) \
1050 DEF_OPT("-help", 0, OPT__help) \
1051 DEF_OPT("-target-help", 0, OPT_target__help) \
1052 DEF_OPT("-version", 0, OPT__version) \
1053 DEF_OPT("A", no_ass, OPT_A) \
1054 DEF_OPT("C", 0, OPT_C) \
1055 DEF_OPT("D", no_mac, OPT_D) \
1056 DEF_OPT("H", 0, OPT_H) \
1057 DEF_OPT("I", no_dir, OPT_I) \
1058 DEF_OPT("M", 0, OPT_M) \
1059 DEF_OPT("MD", no_fil, OPT_MD) \
1060 DEF_OPT("MF", no_fil, OPT_MF) \
1061 DEF_OPT("MG", 0, OPT_MG) \
1062 DEF_OPT("MM", 0, OPT_MM) \
1063 DEF_OPT("MMD", no_fil, OPT_MMD) \
1064 DEF_OPT("MP", 0, OPT_MP) \
1065 DEF_OPT("MQ", no_tgt, OPT_MQ) \
1066 DEF_OPT("MT", no_tgt, OPT_MT) \
1067 DEF_OPT("P", 0, OPT_P) \
1068 DEF_OPT("U", no_mac, OPT_U) \
1069 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1070 DEF_OPT("d", no_arg, OPT_d) \
1071 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1072 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1073 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1074 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1075 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1076 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1077 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1078 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1079 DEF_OPT("h", 0, OPT_h) \
1080 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1081 DEF_OPT("imacros", no_fil, OPT_imacros) \
1082 DEF_OPT("include", no_fil, OPT_include) \
1083 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1084 DEF_OPT("isystem", no_dir, OPT_isystem) \
1085 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1086 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1087 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1088 DEF_OPT("lang-c", 0, OPT_lang_c) \
1089 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1090 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1091 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1092 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1093 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1094 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1095 DEF_OPT("o", no_fil, OPT_o) \
1096 DEF_OPT("pedantic", 0, OPT_pedantic) \
1097 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1098 DEF_OPT("remap", 0, OPT_remap) \
1099 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1100 DEF_OPT("std=c89", 0, OPT_std_c89) \
1101 DEF_OPT("std=c99", 0, OPT_std_c99) \
1102 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1103 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1104 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1105 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1106 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1107 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1108 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1109 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1110 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1111 DEF_OPT("v", 0, OPT_v) \
1112 DEF_OPT("version", 0, OPT_version) \
1113 DEF_OPT("w", 0, OPT_w)
1115 #define DEF_OPT(text, msg, code) code,
1118 COMMAND_LINE_OPTIONS
1125 const char *opt_text;
1128 enum opt_code opt_code;
1131 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1133 static struct cl_option cl_options[] =
1135 static const struct cl_option cl_options[] =
1138 COMMAND_LINE_OPTIONS
1141 #undef COMMAND_LINE_OPTIONS
1143 /* Perform a binary search to find which, if any, option the given
1144 command-line matches. Returns its index in the option array,
1145 negative on failure. Complications arise since some options can be
1146 suffixed with an argument, and multiple complete matches can occur,
1147 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to
1148 accept options beginning with -W that we do not recognise, but not
1149 to swallow any subsequent command line argument; this is handled as
1150 special cases in cpp_handle_option. */
1152 parse_option (input)
1155 unsigned int md, mn, mx;
1166 opt_len = cl_options[md].opt_len;
1167 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1175 if (input[opt_len] == '\0')
1177 /* We were passed more text. If the option takes an argument,
1178 we may match a later option or we may have been passed the
1179 argument. The longest possible option match succeeds.
1180 If the option takes no arguments we have not matched and
1181 continue the search (e.g. input="stdc++" match was "stdc"). */
1183 if (cl_options[md].msg)
1185 /* Scan forwards. If we get an exact match, return it.
1186 Otherwise, return the longest option-accepting match.
1187 This loops no more than twice with current options. */
1189 for (; mn < (unsigned int) N_OPTS; mn++)
1191 opt_len = cl_options[mn].opt_len;
1192 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1194 if (input[opt_len] == '\0')
1196 if (cl_options[mn].msg)
1207 /* Handle one command-line option in (argc, argv).
1208 Can be called multiple times, to handle multiple sets of options.
1209 Returns number of strings consumed. */
1212 cpp_handle_option (pfile, argc, argv)
1218 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1220 /* Interpret "-" or a non-option as a file name. */
1221 if (argv[i][0] != '-' || argv[i][1] == '\0')
1223 if (CPP_OPTION (pfile, in_fname) == NULL)
1224 CPP_OPTION (pfile, in_fname) = argv[i];
1225 else if (CPP_OPTION (pfile, out_fname) == NULL)
1226 CPP_OPTION (pfile, out_fname) = argv[i];
1228 cpp_fatal (pfile, "Too many filenames. Type %s --help for usage info",
1233 enum opt_code opt_code;
1235 const char *arg = 0;
1237 /* Skip over '-'. */
1238 opt_index = parse_option (&argv[i][1]);
1242 opt_code = cl_options[opt_index].opt_code;
1243 if (cl_options[opt_index].msg)
1245 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1247 /* Yuk. Special case for -W as it must not swallow
1248 up any following argument. If this becomes common, add
1249 another field to the cl_options table. */
1250 if (arg[0] == '\0' && opt_code != OPT_W)
1255 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1263 case N_OPTS: /* Shut GCC up. */
1265 case OPT_fleading_underscore:
1266 CPP_OPTION (pfile, user_label_prefix) = "_";
1268 case OPT_fno_leading_underscore:
1269 CPP_OPTION (pfile, user_label_prefix) = "";
1271 case OPT_fno_operator_names:
1272 CPP_OPTION (pfile, operator_names) = 0;
1274 case OPT_fpreprocessed:
1275 CPP_OPTION (pfile, preprocessed) = 1;
1277 case OPT_fno_preprocessed:
1278 CPP_OPTION (pfile, preprocessed) = 0;
1280 case OPT_fshow_column:
1281 CPP_OPTION (pfile, show_column) = 1;
1283 case OPT_fno_show_column:
1284 CPP_OPTION (pfile, show_column) = 0;
1287 /* Silently ignore empty string, non-longs and silly values. */
1291 long tabstop = strtol (arg, &endptr, 10);
1292 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1293 CPP_OPTION (pfile, tabstop) = tabstop;
1297 CPP_OPTION (pfile, inhibit_warnings) = 1;
1302 CPP_OPTION (pfile, help_only) = 1;
1304 case OPT_target__help:
1305 /* Print if any target specific options. cpplib has none, but
1306 make sure help_only gets set. */
1307 CPP_OPTION (pfile, help_only) = 1;
1310 /* --version inhibits compilation, -version doesn't. -v means
1311 verbose and -version. Historical reasons, don't ask. */
1313 CPP_OPTION (pfile, help_only) = 1;
1314 pfile->print_version = 1;
1317 CPP_OPTION (pfile, verbose) = 1;
1318 pfile->print_version = 1;
1321 pfile->print_version = 1;
1325 CPP_OPTION (pfile, discard_comments) = 0;
1328 CPP_OPTION (pfile, no_line_commands) = 1;
1330 case OPT_dollar: /* Don't include $ in identifiers. */
1331 CPP_OPTION (pfile, dollars_in_ident) = 0;
1334 CPP_OPTION (pfile, print_include_names) = 1;
1337 new_pending_directive (pend, arg, cpp_define);
1339 case OPT_pedantic_errors:
1340 CPP_OPTION (pfile, pedantic_errors) = 1;
1343 CPP_OPTION (pfile, pedantic) = 1;
1346 CPP_OPTION (pfile, trigraphs) = 1;
1349 CPP_OPTION (pfile, cplusplus) = 1;
1350 CPP_OPTION (pfile, cplusplus_comments) = 1;
1353 CPP_OPTION (pfile, remap) = 1;
1356 CPP_OPTION (pfile, include_prefix) = arg;
1357 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1360 set_lang (pfile, CLK_GNUC89);
1362 case OPT_lang_cplusplus:
1363 set_lang (pfile, CLK_GNUCXX);
1366 set_lang (pfile, CLK_OBJC);
1368 case OPT_lang_objcplusplus:
1369 set_lang (pfile, CLK_OBJCXX);
1372 set_lang (pfile, CLK_ASM);
1374 case OPT_std_cplusplus98:
1375 set_lang (pfile, CLK_CXX98);
1378 set_lang (pfile, CLK_GNUC89);
1382 set_lang (pfile, CLK_GNUC99);
1384 case OPT_std_iso9899_199409:
1385 set_lang (pfile, CLK_STDC94);
1387 case OPT_std_iso9899_1990:
1390 set_lang (pfile, CLK_STDC89);
1392 case OPT_std_iso9899_199x:
1393 case OPT_std_iso9899_1999:
1396 set_lang (pfile, CLK_STDC99);
1399 /* -nostdinc causes no default include directories.
1400 You must specify all include-file directories with -I. */
1401 CPP_OPTION (pfile, no_standard_includes) = 1;
1403 case OPT_nostdincplusplus:
1404 /* -nostdinc++ causes no default C++-specific include directories. */
1405 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1408 if (CPP_OPTION (pfile, out_fname) == NULL)
1409 CPP_OPTION (pfile, out_fname) = arg;
1412 cpp_fatal (pfile, "Output filename specified twice");
1417 /* Args to -d specify what parts of macros to dump.
1418 Silently ignore unrecognised options; they may
1419 be aimed at the compiler proper. */
1423 while ((c = *arg++) != '\0')
1427 CPP_OPTION (pfile, dump_macros) = dump_only;
1428 CPP_OPTION (pfile, no_output) = 1;
1431 CPP_OPTION (pfile, dump_macros) = dump_names;
1434 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1437 CPP_OPTION (pfile, dump_includes) = 1;
1444 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1447 CPP_OPTION (pfile, print_deps) = 2;
1450 CPP_OPTION (pfile, print_deps) = 1;
1453 CPP_OPTION (pfile, deps_file) = arg;
1456 CPP_OPTION (pfile, deps_phony_targets) = 1;
1460 /* Add a target. -MQ quotes for Make. */
1461 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1464 /* -MD and -MMD for cpp0 are deprecated and undocumented
1465 (use -M or -MM with -MF instead), and probably should be
1466 removed with the next major GCC version. For the moment
1467 we allow these for the benefit of Automake 1.4, which
1468 uses these when dependency tracking is enabled. Automake
1469 1.5 will fix this. */
1471 CPP_OPTION (pfile, print_deps) = 2;
1472 CPP_OPTION (pfile, deps_file) = arg;
1475 CPP_OPTION (pfile, print_deps) = 1;
1476 CPP_OPTION (pfile, deps_file) = arg;
1482 /* -A with an argument beginning with '-' acts as
1483 #unassert on whatever immediately follows the '-'.
1484 If "-" is the whole argument, we eliminate all
1485 predefined macros and assertions, including those
1486 that were specified earlier on the command line.
1487 That way we can get rid of any that were passed
1488 automatically in from GCC. */
1492 struct pending_option *o1, *o2;
1494 o1 = pend->directive_head;
1501 pend->directive_head = NULL;
1502 pend->directive_tail = NULL;
1505 new_pending_directive (pend, arg + 1, cpp_unassert);
1508 new_pending_directive (pend, arg, cpp_assert);
1511 new_pending_directive (pend, arg, cpp_undef);
1513 case OPT_I: /* Add directory to path for includes. */
1514 if (!strcmp (arg, "-"))
1517 Use the preceding -I directories for #include "..."
1518 but not #include <...>.
1519 Don't search the directory of the present file
1520 for #include "...". (Note that -I. -I- is not the same as
1521 the default setup; -I. uses the compiler's working dir.) */
1522 if (! CPP_OPTION (pfile, ignore_srcdir))
1524 pend->quote_head = pend->brack_head;
1525 pend->quote_tail = pend->brack_tail;
1526 pend->brack_head = 0;
1527 pend->brack_tail = 0;
1528 CPP_OPTION (pfile, ignore_srcdir) = 1;
1532 cpp_fatal (pfile, "-I- specified twice");
1537 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1540 /* Add directory to beginning of system include path, as a system
1541 include directory. */
1542 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1546 struct pending_option *o = (struct pending_option *)
1547 xmalloc (sizeof (struct pending_option));
1550 /* This list has to be built in reverse order so that
1551 when cpp_start_read pushes all the -include files onto
1552 the buffer stack, they will be scanned in forward order. */
1553 o->next = pend->include_head;
1554 pend->include_head = o;
1559 struct pending_option *o = (struct pending_option *)
1560 xmalloc (sizeof (struct pending_option));
1564 APPEND (pend, imacros, o);
1567 case OPT_iwithprefix:
1568 /* Add directory to end of path for includes,
1569 with the default prefix at the front of its name. */
1571 case OPT_iwithprefixbefore:
1572 /* Add directory to main path for includes,
1573 with the default prefix at the front of its name. */
1580 if (CPP_OPTION (pfile, include_prefix) != 0)
1582 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1583 fname = xmalloc (ipl + len + 1);
1584 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1585 memcpy (fname + ipl, arg, len + 1);
1587 else if (cpp_GCC_INCLUDE_DIR_len)
1589 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1590 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1591 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1594 fname = xstrdup (arg);
1596 append_include_chain (pfile, fname,
1597 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1601 /* Add directory to end of path for includes. */
1602 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1605 /* Silently ignore unrecognised options. */
1606 if (!strcmp (argv[i], "-Wall"))
1608 CPP_OPTION (pfile, warn_trigraphs) = 1;
1609 CPP_OPTION (pfile, warn_comments) = 1;
1611 else if (!strcmp (argv[i], "-Wtraditional"))
1612 CPP_OPTION (pfile, warn_traditional) = 1;
1613 else if (!strcmp (argv[i], "-Wtrigraphs"))
1614 CPP_OPTION (pfile, warn_trigraphs) = 1;
1615 else if (!strcmp (argv[i], "-Wcomment"))
1616 CPP_OPTION (pfile, warn_comments) = 1;
1617 else if (!strcmp (argv[i], "-Wcomments"))
1618 CPP_OPTION (pfile, warn_comments) = 1;
1619 else if (!strcmp (argv[i], "-Wundef"))
1620 CPP_OPTION (pfile, warn_undef) = 1;
1621 else if (!strcmp (argv[i], "-Wimport"))
1622 CPP_OPTION (pfile, warn_import) = 1;
1623 else if (!strcmp (argv[i], "-Werror"))
1624 CPP_OPTION (pfile, warnings_are_errors) = 1;
1625 else if (!strcmp (argv[i], "-Wsystem-headers"))
1626 CPP_OPTION (pfile, warn_system_headers) = 1;
1627 else if (!strcmp (argv[i], "-Wno-traditional"))
1628 CPP_OPTION (pfile, warn_traditional) = 0;
1629 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1630 CPP_OPTION (pfile, warn_trigraphs) = 0;
1631 else if (!strcmp (argv[i], "-Wno-comment"))
1632 CPP_OPTION (pfile, warn_comments) = 0;
1633 else if (!strcmp (argv[i], "-Wno-comments"))
1634 CPP_OPTION (pfile, warn_comments) = 0;
1635 else if (!strcmp (argv[i], "-Wno-undef"))
1636 CPP_OPTION (pfile, warn_undef) = 0;
1637 else if (!strcmp (argv[i], "-Wno-import"))
1638 CPP_OPTION (pfile, warn_import) = 0;
1639 else if (!strcmp (argv[i], "-Wno-error"))
1640 CPP_OPTION (pfile, warnings_are_errors) = 0;
1641 else if (!strcmp (argv[i], "-Wno-system-headers"))
1642 CPP_OPTION (pfile, warn_system_headers) = 0;
1649 /* Handle command-line options in (argc, argv).
1650 Can be called multiple times, to handle multiple sets of options.
1651 Returns if an unrecognized option is seen.
1652 Returns number of strings consumed. */
1654 cpp_handle_options (pfile, argc, argv)
1660 int strings_processed;
1662 for (i = 0; i < argc; i += strings_processed)
1664 strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
1665 if (strings_processed == 0)
1672 /* Extra processing when all options are parsed, after all calls to
1673 cpp_handle_option[s]. Consistency checks etc. */
1675 cpp_post_options (pfile)
1678 if (pfile->print_version)
1680 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1681 #ifdef TARGET_VERSION
1684 fputc ('\n', stderr);
1687 /* Canonicalize in_fname and out_fname. We guarantee they are not
1688 NULL, and that the empty string represents stdin / stdout. */
1689 if (CPP_OPTION (pfile, in_fname) == NULL
1690 || !strcmp (CPP_OPTION (pfile, in_fname), "-"))
1691 CPP_OPTION (pfile, in_fname) = "";
1693 if (CPP_OPTION (pfile, out_fname) == NULL
1694 || !strcmp (CPP_OPTION (pfile, out_fname), "-"))
1695 CPP_OPTION (pfile, out_fname) = "";
1697 /* -Wtraditional is not useful in C++ mode. */
1698 if (CPP_OPTION (pfile, cplusplus))
1699 CPP_OPTION (pfile, warn_traditional) = 0;
1701 /* Set this if it hasn't been set already. */
1702 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1703 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1705 /* Permanently disable macro expansion if we are rescanning
1706 preprocessed text. */
1707 if (CPP_OPTION (pfile, preprocessed))
1708 pfile->state.prevent_expansion = 1;
1710 /* We need to do this after option processing and before
1711 cpp_start_read, as cppmain.c relies on the options->no_output to
1712 set its callbacks correctly before calling cpp_start_read. */
1713 init_dependency_output (pfile);
1715 /* After checking the environment variables, check if -M or -MM has
1716 not been specified, but other -M options have. */
1717 if (CPP_OPTION (pfile, print_deps) == 0 &&
1718 (CPP_OPTION (pfile, print_deps_missing_files)
1719 || CPP_OPTION (pfile, deps_file)
1720 || CPP_OPTION (pfile, deps_phony_targets)))
1721 cpp_fatal (pfile, "you must additionally specify either -M or -MM");
1724 /* Set up dependency-file output. */
1726 init_dependency_output (pfile)
1729 char *spec, *s, *output_file;
1731 /* Either of two environment variables can specify output of deps.
1732 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1733 where OUTPUT_FILE is the file to write deps info to
1734 and DEPS_TARGET is the target to mention in the deps. */
1736 if (CPP_OPTION (pfile, print_deps) == 0)
1738 spec = getenv ("DEPENDENCIES_OUTPUT");
1740 CPP_OPTION (pfile, print_deps) = 1;
1743 spec = getenv ("SUNPRO_DEPENDENCIES");
1745 CPP_OPTION (pfile, print_deps) = 2;
1750 /* Find the space before the DEPS_TARGET, if there is one. */
1751 s = strchr (spec, ' ');
1754 /* Let the caller perform MAKE quoting. */
1755 deps_add_target (pfile->deps, s + 1, 0);
1756 output_file = (char *) xmalloc (s - spec + 1);
1757 memcpy (output_file, spec, s - spec);
1758 output_file[s - spec] = 0;
1763 /* Command line overrides environment variables. */
1764 if (CPP_OPTION (pfile, deps_file) == 0)
1765 CPP_OPTION (pfile, deps_file) = output_file;
1766 CPP_OPTION (pfile, print_deps_append) = 1;
1769 /* If dependencies go to standard output, or -MG is used, we should
1770 suppress output. The user may be requesting other stuff to
1771 stdout, with -dM, -v etc. We let them shoot themselves in the
1773 if (CPP_OPTION (pfile, deps_file) == 0
1774 || CPP_OPTION (pfile, print_deps_missing_files))
1775 CPP_OPTION (pfile, no_output) = 1;
1781 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1782 /* To keep the lines from getting too long for some compilers, limit
1783 to about 500 characters (6 lines) per chunk. */
1786 -include <file> Include the contents of <file> before other files\n\
1787 -imacros <file> Accept definition of macros in <file>\n\
1788 -iprefix <path> Specify <path> as a prefix for next two options\n\
1789 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1790 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1791 -isystem <dir> Add <dir> to the start of the system include path\n\
1794 -idirafter <dir> Add <dir> to the end of the system include path\n\
1795 -I <dir> Add <dir> to the end of the main include path\n\
1796 -I- Fine-grained include path control; see info docs\n\
1797 -nostdinc Do not search system include directories\n\
1798 (dirs specified with -isystem will still be used)\n\
1799 -nostdinc++ Do not search system include directories for C++\n\
1800 -o <file> Put output into <file>\n\
1803 -pedantic Issue all warnings demanded by strict ISO C\n\
1804 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1805 -trigraphs Support ISO C trigraphs\n\
1806 -lang-c Assume that the input sources are in C\n\
1807 -lang-c89 Assume that the input sources are in C89\n\
1810 -lang-c++ Assume that the input sources are in C++\n\
1811 -lang-objc Assume that the input sources are in ObjectiveC\n\
1812 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1813 -lang-asm Assume that the input sources are in assembler\n\
1816 -std=<std name> Specify the conformance standard; one of:\n\
1817 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1818 iso9899:199409, iso9899:1999\n\
1819 -+ Allow parsing of C++ style features\n\
1820 -w Inhibit warning messages\n\
1821 -Wtrigraphs Warn if trigraphs are encountered\n\
1822 -Wno-trigraphs Do not warn about trigraphs\n\
1823 -Wcomment{s} Warn if one comment starts inside another\n\
1826 -Wno-comment{s} Do not warn about comments\n\
1827 -Wtraditional Warn about features not present in traditional C\n\
1828 -Wno-traditional Do not warn about traditional C\n\
1829 -Wundef Warn if an undefined macro is used by #if\n\
1830 -Wno-undef Do not warn about testing undefined macros\n\
1831 -Wimport Warn about the use of the #import directive\n\
1834 -Wno-import Do not warn about the use of #import\n\
1835 -Werror Treat all warnings as errors\n\
1836 -Wno-error Do not treat warnings as errors\n\
1837 -Wsystem-headers Do not suppress warnings from system headers\n\
1838 -Wno-system-headers Suppress warnings from system headers\n\
1839 -Wall Enable all preprocessor warnings\n\
1842 -M Generate make dependencies\n\
1843 -MM As -M, but ignore system header files\n\
1844 -MF <file> Write dependency output to the given file\n\
1845 -MG Treat missing header file as generated files\n\
1848 -MP Generate phony targets for all headers\n\
1849 -MQ <target> Add a MAKE-quoted target\n\
1850 -MT <target> Add an unquoted target\n\
1853 -D<macro> Define a <macro> with string '1' as its value\n\
1854 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1855 -A<question> (<answer>) Assert the <answer> to <question>\n\
1856 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1857 -U<macro> Undefine <macro> \n\
1858 -v Display the version number\n\
1861 -H Print the name of header files as they are used\n\
1862 -C Do not discard comments\n\
1863 -dM Display a list of macro definitions active at end\n\
1864 -dD Preserve macro definitions in output\n\
1865 -dN As -dD except that only the names are preserved\n\
1866 -dI Include #include directives in the output\n\
1869 -fpreprocessed Treat the input file as already preprocessed\n\
1870 -ftabstop=<number> Distance between tab stops for column reporting\n\
1871 -P Do not generate #line directives\n\
1872 -$ Do not allow '$' in identifiers\n\
1873 -remap Remap file names when including files.\n\
1874 --version Display version information\n\
1875 -h or --help Display this information\n\