2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
4 Contributed by Per Bothner, 1994-95.
5 Based on CCCP program by Paul Rubin, June 1986
6 Adapted to ANSI C, Richard Stallman, Jan 1987
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
30 #include "cppdefault.h"
31 #include "except.h" /* for USING_SJLJ_EXCEPTIONS */
33 /* Predefined symbols, built-in macros, and the default include path. */
35 #ifndef GET_ENV_PATH_LIST
36 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
39 /* Windows does not natively support inodes, and neither does MSDOS.
40 Cygwin's emulation can generate non-unique inodes, so don't use it.
41 VMS has non-numeric inodes. */
43 # define INO_T_EQ(A, B) (!memcmp (&(A), &(B), sizeof (A)))
44 # define INO_T_COPY(DEST, SRC) memcpy(&(DEST), &(SRC), sizeof (SRC))
46 # if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
47 # define INO_T_EQ(A, B) 0
49 # define INO_T_EQ(A, B) ((A) == (B))
51 # define INO_T_COPY(DEST, SRC) (DEST) = (SRC)
54 /* Internal structures and prototypes. */
56 /* A `struct pending_option' remembers one -D, -A, -U, -include, or
58 typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
61 struct pending_option *next;
63 cl_directive_handler handler;
66 /* The `pending' structure accumulates all the options that are not
67 actually processed until we hit cpp_read_main_file. It consists of
68 several lists, one for each type of option. We keep both head and
69 tail pointers for quick insertion. */
72 struct pending_option *directive_head, *directive_tail;
74 struct search_path *quote_head, *quote_tail;
75 struct search_path *brack_head, *brack_tail;
76 struct search_path *systm_head, *systm_tail;
77 struct search_path *after_head, *after_tail;
79 struct pending_option *imacros_head, *imacros_tail;
80 struct pending_option *include_head, *include_tail;
84 #define APPEND(pend, list, elt) \
85 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
86 else (pend)->list##_tail->next = (elt); \
87 (pend)->list##_tail = (elt); \
90 #define APPEND(pend, list, elt) \
91 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
92 else (pend)->list/**/_tail->next = (elt); \
93 (pend)->list/**/_tail = (elt); \
97 static void print_help PARAMS ((void));
98 static void path_include PARAMS ((cpp_reader *,
100 static void init_library PARAMS ((void));
101 static void init_builtins PARAMS ((cpp_reader *));
102 static void append_include_chain PARAMS ((cpp_reader *,
104 static struct search_path * remove_dup_dir PARAMS ((cpp_reader *,
105 struct search_path *));
106 static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *,
107 struct search_path *));
108 static void merge_include_chains PARAMS ((cpp_reader *));
109 static bool push_include PARAMS ((cpp_reader *,
110 struct pending_option *));
111 static void free_chain PARAMS ((struct pending_option *));
112 static void set_lang PARAMS ((cpp_reader *, enum c_lang));
113 static void init_dependency_output PARAMS ((cpp_reader *));
114 static void init_standard_includes PARAMS ((cpp_reader *));
115 static void read_original_filename PARAMS ((cpp_reader *));
116 static void new_pending_directive PARAMS ((struct cpp_pending *,
118 cl_directive_handler));
119 static void output_deps PARAMS ((cpp_reader *));
120 static int parse_option PARAMS ((const char *));
122 /* Fourth argument to append_include_chain: chain to use.
123 Note it's never asked to append to the quote chain. */
124 enum { BRACKET = 0, SYSTEM, AFTER };
126 /* If we have designated initializers (GCC >2.7) these tables can be
127 initialized, constant data. Otherwise, they have to be filled in at
129 #if HAVE_DESIGNATED_INITIALIZERS
131 #define init_trigraph_map() /* Nothing. */
132 #define TRIGRAPH_MAP \
133 __extension__ const uchar _cpp_trigraph_map[UCHAR_MAX + 1] = {
136 #define s(p, v) [p] = v,
140 #define TRIGRAPH_MAP uchar _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \
141 static void init_trigraph_map PARAMS ((void)) { \
142 unsigned char *x = _cpp_trigraph_map;
145 #define s(p, v) x[p] = v;
150 s('=', '#') s(')', ']') s('!', '|')
151 s('(', '[') s('\'', '^') s('>', '}')
152 s('/', '\\') s('<', '{') s('-', '~')
159 /* Given a colon-separated list of file names PATH,
160 add all the names to the search path for include files. */
162 path_include (pfile, list, path)
173 /* Find the end of this name. */
175 while (*q != 0 && *q != PATH_SEPARATOR) q++;
178 /* An empty name in the path stands for the current directory. */
179 name = (char *) xmalloc (2);
185 /* Otherwise use the directory that is named. */
186 name = (char *) xmalloc (q - p + 1);
187 memcpy (name, p, q - p);
191 append_include_chain (pfile, name, path, 0);
193 /* Advance past this name. */
201 /* Append DIR to include path PATH. DIR must be allocated on the
202 heap; this routine takes responsibility for freeing it. CXX_AWARE
203 is non-zero if the header contains extern "C" guards for C++,
204 otherwise it is zero. */
206 append_include_chain (pfile, dir, path, cxx_aware)
210 int cxx_aware ATTRIBUTE_UNUSED;
212 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
213 struct search_path *new;
222 _cpp_simplify_pathname (dir);
226 /* Dirs that don't exist are silently ignored. */
228 cpp_errno (pfile, DL_ERROR, dir);
229 else if (CPP_OPTION (pfile, verbose))
230 fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir);
235 if (!S_ISDIR (st.st_mode))
237 cpp_error_with_line (pfile, DL_ERROR, 0, 0, "%s: Not a directory", dir);
243 if (len > pfile->max_include_len)
244 pfile->max_include_len = len;
246 new = (struct search_path *) xmalloc (sizeof (struct search_path));
249 INO_T_COPY (new->ino, st.st_ino);
250 new->dev = st.st_dev;
251 /* Both systm and after include file lists should be treated as system
252 include files since these two lists are really just a concatenation
253 of one "system" list. */
254 if (path == SYSTEM || path == AFTER)
255 #ifdef NO_IMPLICIT_EXTERN_C
258 new->sysp = cxx_aware ? 1 : 2;
262 new->name_map = NULL;
267 case BRACKET: APPEND (pend, brack, new); break;
268 case SYSTEM: APPEND (pend, systm, new); break;
269 case AFTER: APPEND (pend, after, new); break;
273 /* Handle a duplicated include path. PREV is the link in the chain
274 before the duplicate. The duplicate is removed from the chain and
275 freed. Returns PREV. */
276 static struct search_path *
277 remove_dup_dir (pfile, prev)
279 struct search_path *prev;
281 struct search_path *cur = prev->next;
283 if (CPP_OPTION (pfile, verbose))
284 fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name);
286 prev->next = cur->next;
287 free ((PTR) cur->name);
293 /* Remove duplicate directories from a chain. Returns the tail of the
294 chain, or NULL if the chain is empty. This algorithm is quadratic
295 in the number of -I switches, which is acceptable since there
296 aren't usually that many of them. */
297 static struct search_path *
298 remove_dup_dirs (pfile, head)
300 struct search_path *head;
302 struct search_path *prev = NULL, *cur, *other;
304 for (cur = head; cur; cur = cur->next)
306 for (other = head; other != cur; other = other->next)
307 if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev)
309 if (cur->sysp && !other->sysp)
311 cpp_error (pfile, DL_WARNING,
312 "changing search order for system directory \"%s\"",
314 if (strcmp (cur->name, other->name))
315 cpp_error (pfile, DL_WARNING,
316 " as it is the same as non-system directory \"%s\"",
319 cpp_error (pfile, DL_WARNING,
320 " as it has already been specified as a non-system directory");
322 cur = remove_dup_dir (pfile, prev);
331 /* Merge the four include chains together in the order quote, bracket,
332 system, after. Remove duplicate dirs (as determined by
333 INO_T_EQ()). The system_include and after_include chains are never
334 referred to again after this function; all access is through the
335 bracket_include path. */
337 merge_include_chains (pfile)
340 struct search_path *quote, *brack, *systm, *qtail;
342 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
344 quote = pend->quote_head;
345 brack = pend->brack_head;
346 systm = pend->systm_head;
347 qtail = pend->quote_tail;
349 /* Paste together bracket, system, and after include chains. */
351 pend->systm_tail->next = pend->after_head;
353 systm = pend->after_head;
356 pend->brack_tail->next = systm;
360 /* This is a bit tricky. First we drop dupes from the quote-include
361 list. Then we drop dupes from the bracket-include list.
362 Finally, if qtail and brack are the same directory, we cut out
363 brack and move brack up to point to qtail.
365 We can't just merge the lists and then uniquify them because
366 then we may lose directories from the <> search path that should
367 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
368 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
369 -Ibar -I- -Ifoo -Iquux. */
371 remove_dup_dirs (pfile, brack);
372 qtail = remove_dup_dirs (pfile, quote);
378 /* If brack == qtail, remove brack as it's simpler. */
379 if (brack && INO_T_EQ (qtail->ino, brack->ino)
380 && qtail->dev == brack->dev)
381 brack = remove_dup_dir (pfile, qtail);
386 CPP_OPTION (pfile, quote_include) = quote;
387 CPP_OPTION (pfile, bracket_include) = brack;
390 /* A set of booleans indicating what CPP features each source language
397 char extended_numbers;
399 char dollars_in_ident;
400 char cplusplus_comments;
404 /* ??? Enable $ in identifiers in assembly? */
405 static const struct lang_flags lang_defaults[] =
406 { /* c99 objc c++ xnum trig dollar c++comm digr */
407 /* GNUC89 */ { 0, 0, 0, 1, 0, 1, 1, 1 },
408 /* GNUC99 */ { 1, 0, 0, 1, 0, 1, 1, 1 },
409 /* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0 },
410 /* STDC94 */ { 0, 0, 0, 0, 1, 0, 0, 1 },
411 /* STDC99 */ { 1, 0, 0, 1, 1, 0, 1, 1 },
412 /* GNUCXX */ { 0, 0, 1, 1, 0, 1, 1, 1 },
413 /* CXX98 */ { 0, 0, 1, 1, 1, 0, 1, 1 },
414 /* OBJC */ { 0, 1, 0, 1, 0, 1, 1, 1 },
415 /* OBJCXX */ { 0, 1, 1, 1, 0, 1, 1, 1 },
416 /* ASM */ { 0, 0, 0, 1, 0, 0, 1, 0 }
419 /* Sets internal flags correctly for a given language. */
421 set_lang (pfile, lang)
425 const struct lang_flags *l = &lang_defaults[(int) lang];
427 CPP_OPTION (pfile, lang) = lang;
429 CPP_OPTION (pfile, c99) = l->c99;
430 CPP_OPTION (pfile, objc) = l->objc;
431 CPP_OPTION (pfile, cplusplus) = l->cplusplus;
432 CPP_OPTION (pfile, extended_numbers) = l->extended_numbers;
433 CPP_OPTION (pfile, trigraphs) = l->trigraphs;
434 CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident;
435 CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments;
436 CPP_OPTION (pfile, digraphs) = l->digraphs;
440 static int opt_comp PARAMS ((const void *, const void *));
442 /* Run-time sorting of options array. */
447 return strcmp (((struct cl_option *) p1)->opt_text,
448 ((struct cl_option *) p2)->opt_text);
452 /* init initializes library global state. It might not need to
453 do anything depending on the platform and compiler. */
457 static int initialized = 0;
464 /* For non-ASCII hosts, the cl_options array needs to be sorted at
466 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
469 /* Set up the trigraph map. This doesn't need to do anything if
470 we were compiled with a compiler that supports C99 designated
472 init_trigraph_map ();
476 /* Initialize a cpp_reader structure. */
478 cpp_create_reader (lang)
483 /* Initialise this instance of the library if it hasn't been already. */
486 pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader));
488 set_lang (pfile, lang);
489 CPP_OPTION (pfile, warn_import) = 1;
490 CPP_OPTION (pfile, discard_comments) = 1;
491 CPP_OPTION (pfile, discard_comments_in_macro_exp) = 1;
492 CPP_OPTION (pfile, show_column) = 1;
493 CPP_OPTION (pfile, tabstop) = 8;
494 CPP_OPTION (pfile, operator_names) = 1;
495 CPP_OPTION (pfile, warn_endif_labels) = 1;
496 #if DEFAULT_SIGNED_CHAR
497 CPP_OPTION (pfile, signed_char) = 1;
499 CPP_OPTION (pfile, signed_char) = 0;
502 CPP_OPTION (pfile, pending) =
503 (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
505 /* It's simplest to just create this struct whether or not it will
507 pfile->deps = deps_init ();
509 /* Initialise the line map. Start at logical line 1, so we can use
510 a line number of zero for special states. */
511 init_line_maps (&pfile->line_maps);
514 /* Initialize lexer state. */
515 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments);
517 /* Set up static tokens. */
518 pfile->date.type = CPP_EOF;
519 pfile->avoid_paste.type = CPP_PADDING;
520 pfile->avoid_paste.val.source = NULL;
521 pfile->eof.type = CPP_EOF;
522 pfile->eof.flags = 0;
524 /* Create a token buffer for the lexer. */
525 _cpp_init_tokenrun (&pfile->base_run, 250);
526 pfile->cur_run = &pfile->base_run;
527 pfile->cur_token = pfile->base_run.base;
529 /* Initialise the base context. */
530 pfile->context = &pfile->base_context;
531 pfile->base_context.macro = 0;
532 pfile->base_context.prev = pfile->base_context.next = 0;
534 /* Aligned and unaligned storage. */
535 pfile->a_buff = _cpp_get_buff (pfile, 0);
536 pfile->u_buff = _cpp_get_buff (pfile, 0);
538 /* Initialise the buffer obstack. */
539 gcc_obstack_init (&pfile->buffer_ob);
541 _cpp_init_includes (pfile);
546 /* Free resources used by PFILE. Accessing PFILE after this function
547 returns leads to undefined behaviour. Returns the error count. */
553 struct search_path *dir, *dirn;
554 cpp_context *context, *contextn;
555 tokenrun *run, *runn;
557 free_chain (CPP_OPTION (pfile, pending)->include_head);
558 free (CPP_OPTION (pfile, pending));
560 while (CPP_BUFFER (pfile) != NULL)
561 _cpp_pop_buffer (pfile);
563 if (pfile->macro_buffer)
565 free ((PTR) pfile->macro_buffer);
566 pfile->macro_buffer = NULL;
567 pfile->macro_buffer_len = 0;
570 deps_free (pfile->deps);
571 obstack_free (&pfile->buffer_ob, 0);
573 _cpp_destroy_hashtable (pfile);
574 _cpp_cleanup_includes (pfile);
576 _cpp_free_buff (pfile->a_buff);
577 _cpp_free_buff (pfile->u_buff);
578 _cpp_free_buff (pfile->free_buffs);
580 for (run = &pfile->base_run; run; run = runn)
584 if (run != &pfile->base_run)
588 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
591 free ((PTR) dir->name);
595 for (context = pfile->base_context.next; context; context = contextn)
597 contextn = context->next;
601 free_line_maps (&pfile->line_maps);
603 result = pfile->errors;
610 /* This structure defines one built-in identifier. A node will be
611 entered in the hash table under the name NAME, with value VALUE (if
612 any). If flags has OPERATOR, the node's operator field is used; if
613 flags has BUILTIN the node's builtin field is used. Macros that are
614 known at build time should not be flagged BUILTIN, as then they do
615 not appear in macro dumps with e.g. -dM or -dD.
617 Two values are not compile time constants, so we tag
618 them in the FLAGS field instead:
619 VERS value is the global version_string, quoted
620 ULP value is the global user_label_prefix
622 Also, macros with CPLUS set in the flags field are entered only for C++. */
627 unsigned char builtin;
628 unsigned char operator;
629 unsigned short flags;
636 #define OPERATOR 0x10
638 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
639 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
640 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
641 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
642 static const struct builtin builtin_array[] =
644 B("__TIME__", BT_TIME),
645 B("__DATE__", BT_DATE),
646 B("__FILE__", BT_FILE),
647 B("__BASE_FILE__", BT_BASE_FILE),
648 B("__LINE__", BT_SPECLINE),
649 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
650 B("_Pragma", BT_PRAGMA),
652 X("__VERSION__", VERS),
653 X("__USER_LABEL_PREFIX__", ULP),
654 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
655 C("__HAVE_BUILTIN_SETJMP__", "1"),
656 #if USING_SJLJ_EXCEPTIONS
657 /* libgcc needs to know this. */
658 C("__USING_SJLJ_EXCEPTIONS__","1"),
660 #ifndef NO_BUILTIN_SIZE_TYPE
661 C("__SIZE_TYPE__", SIZE_TYPE),
663 #ifndef NO_BUILTIN_PTRDIFF_TYPE
664 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
666 #ifndef NO_BUILTIN_WCHAR_TYPE
667 C("__WCHAR_TYPE__", WCHAR_TYPE),
669 #ifndef NO_BUILTIN_WINT_TYPE
670 C("__WINT_TYPE__", WINT_TYPE),
672 #ifdef STDC_0_IN_SYSTEM_HEADERS
673 B("__STDC__", BT_STDC),
678 /* Named operators known to the preprocessor. These cannot be #defined
679 and always have their stated meaning. They are treated like normal
680 identifiers except for the type code and the meaning. Most of them
681 are only for C++ (but see iso646.h). */
682 O("and", CPP_AND_AND, CPLUS),
683 O("and_eq", CPP_AND_EQ, CPLUS),
684 O("bitand", CPP_AND, CPLUS),
685 O("bitor", CPP_OR, CPLUS),
686 O("compl", CPP_COMPL, CPLUS),
687 O("not", CPP_NOT, CPLUS),
688 O("not_eq", CPP_NOT_EQ, CPLUS),
689 O("or", CPP_OR_OR, CPLUS),
690 O("or_eq", CPP_OR_EQ, CPLUS),
691 O("xor", CPP_XOR, CPLUS),
692 O("xor_eq", CPP_XOR_EQ, CPLUS)
698 #define builtin_array_end (builtin_array + ARRAY_SIZE (builtin_array))
700 /* Subroutine of cpp_read_main_file; reads the builtins table above and
701 enters them, and language-specific macros, into the hash table. */
703 init_builtins (pfile)
706 const struct builtin *b;
708 for(b = builtin_array; b < builtin_array_end; b++)
710 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
713 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
716 if (b->flags & (OPERATOR | BUILTIN))
718 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
719 if (b->flags & OPERATOR)
721 hp->flags |= NODE_OPERATOR;
722 hp->value.operator = b->operator;
727 hp->flags |= NODE_BUILTIN | NODE_WARN;
728 hp->value.builtin = b->builtin;
731 else /* A standard macro of some kind. */
738 /* Allocate enough space for 'name "value"\n\0'. */
739 str = alloca (b->len + strlen (version_string) + 5);
740 sprintf (str, "%s \"%s\"\n", b->name, version_string);
745 val = CPP_OPTION (pfile, user_label_prefix);
749 /* Allocate enough space for "name value\n\0". */
750 str = alloca (b->len + strlen (val) + 3);
751 sprintf(str, "%s %s\n", b->name, val);
754 _cpp_define_builtin (pfile, str);
758 if (CPP_OPTION (pfile, cplusplus))
760 _cpp_define_builtin (pfile, "__cplusplus 1");
761 if (SUPPORTS_ONE_ONLY)
762 _cpp_define_builtin (pfile, "__GXX_WEAK__ 1");
764 _cpp_define_builtin (pfile, "__GXX_WEAK__ 0");
766 if (CPP_OPTION (pfile, objc))
767 _cpp_define_builtin (pfile, "__OBJC__ 1");
769 if (CPP_OPTION (pfile, lang) == CLK_STDC94)
770 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
771 else if (CPP_OPTION (pfile, c99))
772 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
774 if (CPP_OPTION (pfile, signed_char) == 0)
775 _cpp_define_builtin (pfile, "__CHAR_UNSIGNED__ 1");
777 if (CPP_OPTION (pfile, lang) == CLK_STDC89
778 || CPP_OPTION (pfile, lang) == CLK_STDC94
779 || CPP_OPTION (pfile, lang) == CLK_STDC99)
780 _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1");
781 else if (CPP_OPTION (pfile, lang) == CLK_ASM)
782 _cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
789 #undef builtin_array_end
791 /* And another subroutine. This one sets up the standard include path. */
793 init_standard_includes (pfile)
797 const struct default_include *p;
798 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
800 /* Several environment variables may add to the include search path.
801 CPATH specifies an additional list of directories to be searched
802 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
803 etc. specify an additional list of directories to be searched as
804 if specified with -isystem, for the language indicated. */
806 GET_ENV_PATH_LIST (path, "CPATH");
807 if (path != 0 && *path != 0)
808 path_include (pfile, path, BRACKET);
810 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
813 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
816 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
819 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
822 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
825 if (path != 0 && *path != 0)
826 path_include (pfile, path, SYSTEM);
828 /* Search "translated" versions of GNU directories.
829 These have /usr/local/lib/gcc... replaced by specd_prefix. */
830 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
832 /* Remove the `include' from /usr/local/lib/gcc.../include.
833 GCC_INCLUDE_DIR will always end in /include. */
834 int default_len = cpp_GCC_INCLUDE_DIR_len;
835 char *default_prefix = (char *) alloca (default_len + 1);
836 int specd_len = strlen (specd_prefix);
838 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
839 default_prefix[default_len] = '\0';
841 for (p = cpp_include_defaults; p->fname; p++)
843 /* Some standard dirs are only for C++. */
845 || (CPP_OPTION (pfile, cplusplus)
846 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
848 /* Does this dir start with the prefix? */
849 if (!memcmp (p->fname, default_prefix, default_len))
851 /* Yes; change prefix and add to search list. */
852 int flen = strlen (p->fname);
853 int this_len = specd_len + flen - default_len;
854 char *str = (char *) xmalloc (this_len + 1);
855 memcpy (str, specd_prefix, specd_len);
856 memcpy (str + specd_len,
857 p->fname + default_len,
858 flen - default_len + 1);
860 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
866 /* Search ordinary names for GNU include directories. */
867 for (p = cpp_include_defaults; p->fname; p++)
869 /* Some standard dirs are only for C++. */
871 || (CPP_OPTION (pfile, cplusplus)
872 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
874 char *str = update_path (p->fname, p->component);
875 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
880 /* Pushes a command line -imacro and -include file indicated by P onto
881 the buffer stack. Returns non-zero if successful. */
883 push_include (pfile, p)
885 struct pending_option *p;
889 /* Later: maybe update this to use the #include "" search path
890 if cpp_read_file fails. */
891 header.type = CPP_STRING;
892 header.val.str.text = (const unsigned char *) p->arg;
893 header.val.str.len = strlen (p->arg);
894 /* Make the command line directive take up a line. */
897 return _cpp_execute_include (pfile, &header, IT_CMDLINE);
900 /* Frees a pending_option chain. */
903 struct pending_option *head;
905 struct pending_option *next;
915 /* This is called after options have been parsed, and partially
916 processed. Setup for processing input from the file named FNAME,
917 or stdin if it is the empty string. Return the original filename
918 on success (e.g. foo.i->foo.c), or NULL on failure. */
920 cpp_read_main_file (pfile, fname, table)
925 /* The front ends don't set up the hash table until they have
926 finished processing the command line options, so initializing the
927 hashtable is deferred until now. */
928 _cpp_init_hashtable (pfile, table);
930 /* Set up the include search path now. */
931 if (! CPP_OPTION (pfile, no_standard_includes))
932 init_standard_includes (pfile);
934 merge_include_chains (pfile);
936 /* With -v, print the list of dirs to search. */
937 if (CPP_OPTION (pfile, verbose))
939 struct search_path *l;
940 fprintf (stderr, _("#include \"...\" search starts here:\n"));
941 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
943 if (l == CPP_OPTION (pfile, bracket_include))
944 fprintf (stderr, _("#include <...> search starts here:\n"));
945 fprintf (stderr, " %s\n", l->name);
947 fprintf (stderr, _("End of search list.\n"));
950 if (CPP_OPTION (pfile, print_deps))
951 /* Set the default target (if there is none already). */
952 deps_add_default_target (pfile->deps, fname);
954 /* Open the main input file. */
955 if (!_cpp_read_file (pfile, fname))
958 /* Set this after cpp_post_options so the client can change the
959 option if it wishes, and after stacking the main file so we don't
960 trace the main file. */
961 pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names);
963 /* For foo.i, read the original filename foo.c now, for the benefit
964 of the front ends. */
965 if (CPP_OPTION (pfile, preprocessed))
966 read_original_filename (pfile);
968 return pfile->map->to_file;
971 /* For preprocessed files, if the first tokens are of the form # NUM.
972 handle the directive so we know the original file name. This will
973 generate file_change callbacks, which the front ends must handle
974 appropriately given their state of initialization. */
976 read_original_filename (pfile)
979 const cpp_token *token, *token1;
981 /* Lex ahead; if the first tokens are of the form # NUM, then
982 process the directive, otherwise back up. */
983 token = _cpp_lex_direct (pfile);
984 if (token->type == CPP_HASH)
986 token1 = _cpp_lex_direct (pfile);
987 _cpp_backup_tokens (pfile, 1);
989 /* If it's a #line directive, handle it. */
990 if (token1->type == CPP_NUMBER)
992 _cpp_handle_directive (pfile, token->flags & PREV_WHITE);
997 /* Backup as if nothing happened. */
998 _cpp_backup_tokens (pfile, 1);
1001 /* Handle pending command line options: -D, -U, -A, -imacros and
1002 -include. This should be called after debugging has been properly
1003 set up in the front ends. */
1005 cpp_finish_options (pfile)
1008 /* Install builtins and process command line macros etc. in the order
1009 they appeared, but only if not already preprocessed. */
1010 if (! CPP_OPTION (pfile, preprocessed))
1012 struct pending_option *p;
1014 _cpp_do_file_change (pfile, LC_RENAME, _("<built-in>"), 1, 0);
1015 init_builtins (pfile);
1016 _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0);
1017 for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next)
1018 (*p->handler) (pfile, p->arg);
1020 /* Scan -imacros files after -D, -U, but before -include.
1021 pfile->next_include_file is NULL, so _cpp_pop_buffer does not
1022 push -include files. */
1023 for (p = CPP_OPTION (pfile, pending)->imacros_head; p; p = p->next)
1024 if (push_include (pfile, p))
1025 cpp_scan_nooutput (pfile);
1027 pfile->next_include_file = &CPP_OPTION (pfile, pending)->include_head;
1028 _cpp_maybe_push_include_file (pfile);
1031 free_chain (CPP_OPTION (pfile, pending)->imacros_head);
1032 free_chain (CPP_OPTION (pfile, pending)->directive_head);
1035 /* Push the next buffer on the stack given by -include, if any. */
1037 _cpp_maybe_push_include_file (pfile)
1040 if (pfile->next_include_file)
1042 struct pending_option *head = *pfile->next_include_file;
1044 while (head && !push_include (pfile, head))
1048 pfile->next_include_file = &head->next;
1051 /* All done; restore the line map from <command line>. */
1052 _cpp_do_file_change (pfile, LC_RENAME,
1053 pfile->line_maps.maps[0].to_file, 1, 0);
1054 /* Don't come back here again. */
1055 pfile->next_include_file = NULL;
1060 /* Use mkdeps.c to output dependency information. */
1065 /* Stream on which to print the dependency information. */
1066 FILE *deps_stream = 0;
1067 const char *const deps_mode =
1068 CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
1070 if (CPP_OPTION (pfile, deps_file)[0] == '\0')
1071 deps_stream = stdout;
1074 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
1075 if (deps_stream == 0)
1077 cpp_errno (pfile, DL_ERROR, CPP_OPTION (pfile, deps_file));
1082 deps_write (pfile->deps, deps_stream, 72);
1084 if (CPP_OPTION (pfile, deps_phony_targets))
1085 deps_phony_targets (pfile->deps, deps_stream);
1087 /* Don't close stdout. */
1088 if (deps_stream != stdout)
1090 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1091 cpp_error (pfile, DL_FATAL, "I/O error on output");
1095 /* This is called at the end of preprocessing. It pops the
1096 last buffer and writes dependency output. It should also
1097 clear macro definitions, such that you could call cpp_start_read
1098 with a new filename to restart processing. */
1103 /* cpplex.c leaves the final buffer on the stack. This it so that
1104 it returns an unending stream of CPP_EOFs to the client. If we
1105 popped the buffer, we'd dereference a NULL buffer pointer and
1106 segfault. It's nice to allow the client to do worry-free excess
1107 cpp_get_token calls. */
1108 while (pfile->buffer)
1109 _cpp_pop_buffer (pfile);
1111 /* Don't write the deps file if preprocessing has failed. */
1112 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1113 output_deps (pfile);
1115 /* Report on headers that could use multiple include guards. */
1116 if (CPP_OPTION (pfile, print_include_names))
1117 _cpp_report_missing_guards (pfile);
1120 /* Add a directive to be handled later in the initialization phase. */
1122 new_pending_directive (pend, text, handler)
1123 struct cpp_pending *pend;
1125 cl_directive_handler handler;
1127 struct pending_option *o = (struct pending_option *)
1128 xmalloc (sizeof (struct pending_option));
1132 o->handler = handler;
1133 APPEND (pend, directive, o);
1136 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1137 I.e. a const string initializer with parens around it. That is
1138 what N_("string") resolves to, so we make no_* be macros instead. */
1139 #define no_arg N_("argument missing after %s")
1140 #define no_ass N_("assertion missing after %s")
1141 #define no_dir N_("directory name missing after %s")
1142 #define no_fil N_("file name missing after %s")
1143 #define no_mac N_("macro name missing after %s")
1144 #define no_pth N_("path name missing after %s")
1145 #define no_num N_("number missing after %s")
1146 #define no_tgt N_("target missing after %s")
1148 /* This is the list of all command line options, with the leading
1149 "-" removed. It must be sorted in ASCII collating order. */
1150 #define COMMAND_LINE_OPTIONS \
1151 DEF_OPT("$", 0, OPT_dollar) \
1152 DEF_OPT("+", 0, OPT_plus) \
1153 DEF_OPT("-help", 0, OPT__help) \
1154 DEF_OPT("-target-help", 0, OPT_target__help) \
1155 DEF_OPT("-version", 0, OPT__version) \
1156 DEF_OPT("A", no_ass, OPT_A) \
1157 DEF_OPT("C", 0, OPT_C) \
1158 DEF_OPT("CC", 0, OPT_CC) \
1159 DEF_OPT("D", no_mac, OPT_D) \
1160 DEF_OPT("H", 0, OPT_H) \
1161 DEF_OPT("I", no_dir, OPT_I) \
1162 DEF_OPT("M", 0, OPT_M) \
1163 DEF_OPT("MD", no_fil, OPT_MD) \
1164 DEF_OPT("MF", no_fil, OPT_MF) \
1165 DEF_OPT("MG", 0, OPT_MG) \
1166 DEF_OPT("MM", 0, OPT_MM) \
1167 DEF_OPT("MMD", no_fil, OPT_MMD) \
1168 DEF_OPT("MP", 0, OPT_MP) \
1169 DEF_OPT("MQ", no_tgt, OPT_MQ) \
1170 DEF_OPT("MT", no_tgt, OPT_MT) \
1171 DEF_OPT("P", 0, OPT_P) \
1172 DEF_OPT("U", no_mac, OPT_U) \
1173 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1174 DEF_OPT("d", no_arg, OPT_d) \
1175 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1176 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1177 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1178 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1179 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1180 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1181 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1182 DEF_OPT("fsigned-char", 0, OPT_fsigned_char) \
1183 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1184 DEF_OPT("funsigned-char", 0, OPT_funsigned_char) \
1185 DEF_OPT("h", 0, OPT_h) \
1186 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1187 DEF_OPT("imacros", no_fil, OPT_imacros) \
1188 DEF_OPT("include", no_fil, OPT_include) \
1189 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1190 DEF_OPT("isystem", no_dir, OPT_isystem) \
1191 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1192 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1193 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1194 DEF_OPT("lang-c", 0, OPT_lang_c) \
1195 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1196 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1197 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1198 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1199 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1200 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1201 DEF_OPT("o", no_fil, OPT_o) \
1202 DEF_OPT("pedantic", 0, OPT_pedantic) \
1203 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1204 DEF_OPT("remap", 0, OPT_remap) \
1205 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1206 DEF_OPT("std=c89", 0, OPT_std_c89) \
1207 DEF_OPT("std=c99", 0, OPT_std_c99) \
1208 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1209 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1210 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1211 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1212 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1213 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1214 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1215 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1216 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1217 DEF_OPT("v", 0, OPT_v) \
1218 DEF_OPT("version", 0, OPT_version) \
1219 DEF_OPT("w", 0, OPT_w)
1221 #define DEF_OPT(text, msg, code) code,
1224 COMMAND_LINE_OPTIONS
1231 const char *opt_text;
1234 enum opt_code opt_code;
1237 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1239 static struct cl_option cl_options[] =
1241 static const struct cl_option cl_options[] =
1244 COMMAND_LINE_OPTIONS
1247 #undef COMMAND_LINE_OPTIONS
1249 /* Perform a binary search to find which, if any, option the given
1250 command-line matches. Returns its index in the option array,
1251 negative on failure. Complications arise since some options can be
1252 suffixed with an argument, and multiple complete matches can occur,
1253 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to
1254 accept options beginning with -W that we do not recognise, but not
1255 to swallow any subsequent command line argument; this is handled as
1256 special cases in cpp_handle_option. */
1258 parse_option (input)
1261 unsigned int md, mn, mx;
1272 opt_len = cl_options[md].opt_len;
1273 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1281 if (input[opt_len] == '\0')
1283 /* We were passed more text. If the option takes an argument,
1284 we may match a later option or we may have been passed the
1285 argument. The longest possible option match succeeds.
1286 If the option takes no arguments we have not matched and
1287 continue the search (e.g. input="stdc++" match was "stdc"). */
1289 if (cl_options[md].msg)
1291 /* Scan forwards. If we get an exact match, return it.
1292 Otherwise, return the longest option-accepting match.
1293 This loops no more than twice with current options. */
1295 for (; mn < (unsigned int) N_OPTS; mn++)
1297 opt_len = cl_options[mn].opt_len;
1298 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1300 if (input[opt_len] == '\0')
1302 if (cl_options[mn].msg)
1313 /* Handle one command-line option in (argc, argv).
1314 Can be called multiple times, to handle multiple sets of options.
1315 If ignore is non-zero, this will ignore unrecognized -W* options.
1316 Returns number of strings consumed. */
1318 cpp_handle_option (pfile, argc, argv, ignore)
1325 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1327 /* Interpret "-" or a non-option as a file name. */
1328 if (argv[i][0] != '-' || argv[i][1] == '\0')
1330 if (CPP_OPTION (pfile, in_fname) == NULL)
1331 CPP_OPTION (pfile, in_fname) = argv[i];
1332 else if (CPP_OPTION (pfile, out_fname) == NULL)
1333 CPP_OPTION (pfile, out_fname) = argv[i];
1335 cpp_error (pfile, DL_FATAL,
1336 "too many filenames. Type %s --help for usage info",
1341 enum opt_code opt_code;
1343 const char *arg = 0;
1345 /* Skip over '-'. */
1346 opt_index = parse_option (&argv[i][1]);
1350 opt_code = cl_options[opt_index].opt_code;
1351 if (cl_options[opt_index].msg)
1353 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1355 /* Yuk. Special case for -W as it must not swallow
1356 up any following argument. If this becomes common, add
1357 another field to the cl_options table. */
1358 if (arg[0] == '\0' && opt_code != OPT_W)
1363 cpp_error (pfile, DL_FATAL,
1364 cl_options[opt_index].msg, argv[i - 1]);
1372 case N_OPTS: /* Shut GCC up. */
1374 case OPT_fleading_underscore:
1375 CPP_OPTION (pfile, user_label_prefix) = "_";
1377 case OPT_fno_leading_underscore:
1378 CPP_OPTION (pfile, user_label_prefix) = "";
1380 case OPT_fno_operator_names:
1381 CPP_OPTION (pfile, operator_names) = 0;
1383 case OPT_fpreprocessed:
1384 CPP_OPTION (pfile, preprocessed) = 1;
1386 case OPT_fno_preprocessed:
1387 CPP_OPTION (pfile, preprocessed) = 0;
1389 case OPT_fshow_column:
1390 CPP_OPTION (pfile, show_column) = 1;
1392 case OPT_fno_show_column:
1393 CPP_OPTION (pfile, show_column) = 0;
1395 case OPT_fsigned_char:
1396 CPP_OPTION (pfile, signed_char) = 1;
1398 case OPT_funsigned_char:
1399 CPP_OPTION (pfile, signed_char) = 0;
1402 /* Silently ignore empty string, non-longs and silly values. */
1406 long tabstop = strtol (arg, &endptr, 10);
1407 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1408 CPP_OPTION (pfile, tabstop) = tabstop;
1412 CPP_OPTION (pfile, inhibit_warnings) = 1;
1417 CPP_OPTION (pfile, help_only) = 1;
1419 case OPT_target__help:
1420 /* Print if any target specific options. cpplib has none, but
1421 make sure help_only gets set. */
1422 CPP_OPTION (pfile, help_only) = 1;
1425 /* --version inhibits compilation, -version doesn't. -v means
1426 verbose and -version. Historical reasons, don't ask. */
1428 CPP_OPTION (pfile, help_only) = 1;
1429 pfile->print_version = 1;
1432 CPP_OPTION (pfile, verbose) = 1;
1433 pfile->print_version = 1;
1436 pfile->print_version = 1;
1440 CPP_OPTION (pfile, discard_comments) = 0;
1443 CPP_OPTION (pfile, discard_comments) = 0;
1444 CPP_OPTION (pfile, discard_comments_in_macro_exp) = 0;
1447 CPP_OPTION (pfile, no_line_commands) = 1;
1449 case OPT_dollar: /* Don't include $ in identifiers. */
1450 CPP_OPTION (pfile, dollars_in_ident) = 0;
1453 CPP_OPTION (pfile, print_include_names) = 1;
1456 new_pending_directive (pend, arg, cpp_define);
1458 case OPT_pedantic_errors:
1459 CPP_OPTION (pfile, pedantic_errors) = 1;
1462 CPP_OPTION (pfile, pedantic) = 1;
1463 CPP_OPTION (pfile, warn_endif_labels) = 1;
1466 CPP_OPTION (pfile, trigraphs) = 1;
1469 CPP_OPTION (pfile, cplusplus) = 1;
1470 CPP_OPTION (pfile, cplusplus_comments) = 1;
1473 CPP_OPTION (pfile, remap) = 1;
1476 CPP_OPTION (pfile, include_prefix) = arg;
1477 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1480 set_lang (pfile, CLK_GNUC89);
1482 case OPT_lang_cplusplus:
1483 set_lang (pfile, CLK_GNUCXX);
1486 set_lang (pfile, CLK_OBJC);
1488 case OPT_lang_objcplusplus:
1489 set_lang (pfile, CLK_OBJCXX);
1492 set_lang (pfile, CLK_ASM);
1494 case OPT_std_cplusplus98:
1495 set_lang (pfile, CLK_CXX98);
1498 set_lang (pfile, CLK_GNUC89);
1502 set_lang (pfile, CLK_GNUC99);
1504 case OPT_std_iso9899_199409:
1505 set_lang (pfile, CLK_STDC94);
1507 case OPT_std_iso9899_1990:
1510 set_lang (pfile, CLK_STDC89);
1512 case OPT_std_iso9899_199x:
1513 case OPT_std_iso9899_1999:
1516 set_lang (pfile, CLK_STDC99);
1519 /* -nostdinc causes no default include directories.
1520 You must specify all include-file directories with -I. */
1521 CPP_OPTION (pfile, no_standard_includes) = 1;
1523 case OPT_nostdincplusplus:
1524 /* -nostdinc++ causes no default C++-specific include directories. */
1525 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1528 if (CPP_OPTION (pfile, out_fname) == NULL)
1529 CPP_OPTION (pfile, out_fname) = arg;
1532 cpp_error (pfile, DL_FATAL, "output filename specified twice");
1537 /* Args to -d specify what parts of macros to dump.
1538 Silently ignore unrecognised options; they may
1539 be aimed at the compiler proper. */
1543 while ((c = *arg++) != '\0')
1547 CPP_OPTION (pfile, dump_macros) = dump_only;
1548 CPP_OPTION (pfile, no_output) = 1;
1551 CPP_OPTION (pfile, dump_macros) = dump_names;
1554 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1557 CPP_OPTION (pfile, dump_includes) = 1;
1564 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1567 /* When doing dependencies with -M or -MM, suppress normal
1568 preprocessed output, but still do -dM etc. as software
1569 depends on this. Preprocessed output occurs if -MD, -MMD
1570 or environment var dependency generation is used. */
1571 CPP_OPTION (pfile, print_deps) = 2;
1572 CPP_OPTION (pfile, no_output) = 1;
1575 CPP_OPTION (pfile, print_deps) = 1;
1576 CPP_OPTION (pfile, no_output) = 1;
1579 CPP_OPTION (pfile, deps_file) = arg;
1582 CPP_OPTION (pfile, deps_phony_targets) = 1;
1586 /* Add a target. -MQ quotes for Make. */
1587 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1591 CPP_OPTION (pfile, print_deps) = 2;
1592 CPP_OPTION (pfile, deps_file) = arg;
1595 CPP_OPTION (pfile, print_deps) = 1;
1596 CPP_OPTION (pfile, deps_file) = arg;
1602 /* -A with an argument beginning with '-' acts as
1603 #unassert on whatever immediately follows the '-'.
1604 If "-" is the whole argument, we eliminate all
1605 predefined macros and assertions, including those
1606 that were specified earlier on the command line.
1607 That way we can get rid of any that were passed
1608 automatically in from GCC. */
1612 free_chain (pend->directive_head);
1613 pend->directive_head = NULL;
1614 pend->directive_tail = NULL;
1617 new_pending_directive (pend, arg + 1, cpp_unassert);
1620 new_pending_directive (pend, arg, cpp_assert);
1623 new_pending_directive (pend, arg, cpp_undef);
1625 case OPT_I: /* Add directory to path for includes. */
1626 if (!strcmp (arg, "-"))
1629 Use the preceding -I directories for #include "..."
1630 but not #include <...>.
1631 Don't search the directory of the present file
1632 for #include "...". (Note that -I. -I- is not the same as
1633 the default setup; -I. uses the compiler's working dir.) */
1634 if (! CPP_OPTION (pfile, ignore_srcdir))
1636 pend->quote_head = pend->brack_head;
1637 pend->quote_tail = pend->brack_tail;
1638 pend->brack_head = 0;
1639 pend->brack_tail = 0;
1640 CPP_OPTION (pfile, ignore_srcdir) = 1;
1644 cpp_error (pfile, DL_FATAL, "-I- specified twice");
1649 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1652 /* Add directory to beginning of system include path, as a system
1653 include directory. */
1654 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1659 struct pending_option *o = (struct pending_option *)
1660 xmalloc (sizeof (struct pending_option));
1664 if (opt_code == OPT_include)
1665 APPEND (pend, include, o);
1667 APPEND (pend, imacros, o);
1670 case OPT_iwithprefix:
1671 /* Add directory to end of path for includes,
1672 with the default prefix at the front of its name. */
1674 case OPT_iwithprefixbefore:
1675 /* Add directory to main path for includes,
1676 with the default prefix at the front of its name. */
1683 if (CPP_OPTION (pfile, include_prefix) != 0)
1685 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1686 fname = xmalloc (ipl + len + 1);
1687 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1688 memcpy (fname + ipl, arg, len + 1);
1690 else if (cpp_GCC_INCLUDE_DIR_len)
1692 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1693 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1694 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1697 fname = xstrdup (arg);
1699 append_include_chain (pfile, fname,
1700 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1704 /* Add directory to end of path for includes. */
1705 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1708 /* Silently ignore unrecognised options. */
1709 if (!strcmp (argv[i], "-Wall"))
1711 CPP_OPTION (pfile, warn_trigraphs) = 1;
1712 CPP_OPTION (pfile, warn_comments) = 1;
1714 else if (!strcmp (argv[i], "-Wtraditional"))
1715 CPP_OPTION (pfile, warn_traditional) = 1;
1716 else if (!strcmp (argv[i], "-Wtrigraphs"))
1717 CPP_OPTION (pfile, warn_trigraphs) = 1;
1718 else if (!strcmp (argv[i], "-Wcomment"))
1719 CPP_OPTION (pfile, warn_comments) = 1;
1720 else if (!strcmp (argv[i], "-Wcomments"))
1721 CPP_OPTION (pfile, warn_comments) = 1;
1722 else if (!strcmp (argv[i], "-Wundef"))
1723 CPP_OPTION (pfile, warn_undef) = 1;
1724 else if (!strcmp (argv[i], "-Wimport"))
1725 CPP_OPTION (pfile, warn_import) = 1;
1726 else if (!strcmp (argv[i], "-Werror"))
1727 CPP_OPTION (pfile, warnings_are_errors) = 1;
1728 else if (!strcmp (argv[i], "-Wsystem-headers"))
1729 CPP_OPTION (pfile, warn_system_headers) = 1;
1730 else if (!strcmp (argv[i], "-Wendif-labels"))
1731 CPP_OPTION (pfile, warn_endif_labels) = 1;
1732 else if (!strcmp (argv[i], "-Wno-traditional"))
1733 CPP_OPTION (pfile, warn_traditional) = 0;
1734 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1735 CPP_OPTION (pfile, warn_trigraphs) = 0;
1736 else if (!strcmp (argv[i], "-Wno-comment"))
1737 CPP_OPTION (pfile, warn_comments) = 0;
1738 else if (!strcmp (argv[i], "-Wno-comments"))
1739 CPP_OPTION (pfile, warn_comments) = 0;
1740 else if (!strcmp (argv[i], "-Wno-undef"))
1741 CPP_OPTION (pfile, warn_undef) = 0;
1742 else if (!strcmp (argv[i], "-Wno-import"))
1743 CPP_OPTION (pfile, warn_import) = 0;
1744 else if (!strcmp (argv[i], "-Wno-error"))
1745 CPP_OPTION (pfile, warnings_are_errors) = 0;
1746 else if (!strcmp (argv[i], "-Wno-system-headers"))
1747 CPP_OPTION (pfile, warn_system_headers) = 0;
1748 else if (!strcmp (argv[i], "-Wno-endif-labels"))
1749 CPP_OPTION (pfile, warn_endif_labels) = 0;
1758 /* Handle command-line options in (argc, argv).
1759 Can be called multiple times, to handle multiple sets of options.
1760 Returns if an unrecognized option is seen.
1761 Returns number of strings consumed. */
1763 cpp_handle_options (pfile, argc, argv)
1769 int strings_processed;
1771 for (i = 0; i < argc; i += strings_processed)
1773 strings_processed = cpp_handle_option (pfile, argc - i, argv + i, 1);
1774 if (strings_processed == 0)
1781 /* Extra processing when all options are parsed, after all calls to
1782 cpp_handle_option[s]. Consistency checks etc. */
1784 cpp_post_options (pfile)
1787 if (pfile->print_version)
1789 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1790 #ifdef TARGET_VERSION
1793 fputc ('\n', stderr);
1796 /* Canonicalize in_fname and out_fname. We guarantee they are not
1797 NULL, and that the empty string represents stdin / stdout. */
1798 if (CPP_OPTION (pfile, in_fname) == NULL
1799 || !strcmp (CPP_OPTION (pfile, in_fname), "-"))
1800 CPP_OPTION (pfile, in_fname) = "";
1802 if (CPP_OPTION (pfile, out_fname) == NULL
1803 || !strcmp (CPP_OPTION (pfile, out_fname), "-"))
1804 CPP_OPTION (pfile, out_fname) = "";
1806 /* -Wtraditional is not useful in C++ mode. */
1807 if (CPP_OPTION (pfile, cplusplus))
1808 CPP_OPTION (pfile, warn_traditional) = 0;
1810 /* Set this if it hasn't been set already. */
1811 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1812 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1814 /* Permanently disable macro expansion if we are rescanning
1815 preprocessed text. */
1816 if (CPP_OPTION (pfile, preprocessed))
1817 pfile->state.prevent_expansion = 1;
1819 /* We need to do this after option processing and before
1820 cpp_start_read, as cppmain.c relies on the options->no_output to
1821 set its callbacks correctly before calling cpp_start_read. */
1822 init_dependency_output (pfile);
1824 /* After checking the environment variables, check if -M or -MM has
1825 not been specified, but other -M options have. */
1826 if (CPP_OPTION (pfile, print_deps) == 0 &&
1827 (CPP_OPTION (pfile, print_deps_missing_files)
1828 || CPP_OPTION (pfile, deps_file)
1829 || CPP_OPTION (pfile, deps_phony_targets)))
1830 cpp_error (pfile, DL_FATAL,
1831 "you must additionally specify either -M or -MM");
1834 /* Set up dependency-file output. On exit, if print_deps is non-zero
1835 then deps_file is not NULL; stdout is the empty string. */
1837 init_dependency_output (pfile)
1840 char *spec, *s, *output_file;
1842 /* Either of two environment variables can specify output of deps.
1843 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1844 where OUTPUT_FILE is the file to write deps info to
1845 and DEPS_TARGET is the target to mention in the deps. */
1847 if (CPP_OPTION (pfile, print_deps) == 0)
1849 spec = getenv ("DEPENDENCIES_OUTPUT");
1851 CPP_OPTION (pfile, print_deps) = 1;
1854 spec = getenv ("SUNPRO_DEPENDENCIES");
1856 CPP_OPTION (pfile, print_deps) = 2;
1861 /* Find the space before the DEPS_TARGET, if there is one. */
1862 s = strchr (spec, ' ');
1865 /* Let the caller perform MAKE quoting. */
1866 deps_add_target (pfile->deps, s + 1, 0);
1867 output_file = (char *) xmalloc (s - spec + 1);
1868 memcpy (output_file, spec, s - spec);
1869 output_file[s - spec] = 0;
1874 /* Command line -MF overrides environment variables and default. */
1875 if (CPP_OPTION (pfile, deps_file) == 0)
1876 CPP_OPTION (pfile, deps_file) = output_file;
1878 CPP_OPTION (pfile, print_deps_append) = 1;
1880 else if (CPP_OPTION (pfile, deps_file) == 0)
1881 /* If -M or -MM was seen without -MF, default output to wherever
1882 was specified with -o. out_fname is non-NULL here. */
1883 CPP_OPTION (pfile, deps_file) = CPP_OPTION (pfile, out_fname);
1886 /* Handle --help output. */
1890 /* To keep the lines from getting too long for some compilers, limit
1891 to about 500 characters (6 lines) per chunk. */
1894 -include <file> Include the contents of <file> before other files\n\
1895 -imacros <file> Accept definition of macros in <file>\n\
1896 -iprefix <path> Specify <path> as a prefix for next two options\n\
1897 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1898 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1899 -isystem <dir> Add <dir> to the start of the system include path\n\
1902 -idirafter <dir> Add <dir> to the end of the system include path\n\
1903 -I <dir> Add <dir> to the end of the main include path\n\
1904 -I- Fine-grained include path control; see info docs\n\
1905 -nostdinc Do not search system include directories\n\
1906 (dirs specified with -isystem will still be used)\n\
1907 -nostdinc++ Do not search system include directories for C++\n\
1908 -o <file> Put output into <file>\n\
1911 -pedantic Issue all warnings demanded by strict ISO C\n\
1912 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1913 -trigraphs Support ISO C trigraphs\n\
1914 -lang-c Assume that the input sources are in C\n\
1915 -lang-c89 Assume that the input sources are in C89\n\
1918 -lang-c++ Assume that the input sources are in C++\n\
1919 -lang-objc Assume that the input sources are in ObjectiveC\n\
1920 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1921 -lang-asm Assume that the input sources are in assembler\n\
1924 -std=<std name> Specify the conformance standard; one of:\n\
1925 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1926 iso9899:199409, iso9899:1999\n\
1927 -+ Allow parsing of C++ style features\n\
1928 -w Inhibit warning messages\n\
1929 -Wtrigraphs Warn if trigraphs are encountered\n\
1930 -Wno-trigraphs Do not warn about trigraphs\n\
1931 -Wcomment{s} Warn if one comment starts inside another\n\
1934 -Wno-comment{s} Do not warn about comments\n\
1935 -Wtraditional Warn about features not present in traditional C\n\
1936 -Wno-traditional Do not warn about traditional C\n\
1937 -Wundef Warn if an undefined macro is used by #if\n\
1938 -Wno-undef Do not warn about testing undefined macros\n\
1939 -Wimport Warn about the use of the #import directive\n\
1942 -Wno-import Do not warn about the use of #import\n\
1943 -Werror Treat all warnings as errors\n\
1944 -Wno-error Do not treat warnings as errors\n\
1945 -Wsystem-headers Do not suppress warnings from system headers\n\
1946 -Wno-system-headers Suppress warnings from system headers\n\
1947 -Wall Enable all preprocessor warnings\n\
1950 -M Generate make dependencies\n\
1951 -MM As -M, but ignore system header files\n\
1952 -MD Generate make dependencies and compile\n\
1953 -MMD As -MD, but ignore system header files\n\
1954 -MF <file> Write dependency output to the given file\n\
1955 -MG Treat missing header file as generated files\n\
1958 -MP Generate phony targets for all headers\n\
1959 -MQ <target> Add a MAKE-quoted target\n\
1960 -MT <target> Add an unquoted target\n\
1963 -D<macro> Define a <macro> with string '1' as its value\n\
1964 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1965 -A<question>=<answer> Assert the <answer> to <question>\n\
1966 -A-<question>=<answer> Disable the <answer> to <question>\n\
1967 -U<macro> Undefine <macro> \n\
1968 -v Display the version number\n\
1971 -H Print the name of header files as they are used\n\
1972 -C Do not discard comments\n\
1973 -dM Display a list of macro definitions active at end\n\
1974 -dD Preserve macro definitions in output\n\
1975 -dN As -dD except that only the names are preserved\n\
1976 -dI Include #include directives in the output\n\
1979 -fpreprocessed Treat the input file as already preprocessed\n\
1980 -ftabstop=<number> Distance between tab stops for column reporting\n\
1981 -P Do not generate #line directives\n\
1982 -$ Do not allow '$' in identifiers\n\
1983 -remap Remap file names when including files\n\
1984 --version Display version information\n\
1985 -h or --help Display this information\n\