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 /* The expression parser stack. */
539 _cpp_expand_op_stack (pfile);
541 /* Initialise the buffer obstack. */
542 gcc_obstack_init (&pfile->buffer_ob);
544 _cpp_init_includes (pfile);
549 /* Free resources used by PFILE. Accessing PFILE after this function
550 returns leads to undefined behaviour. Returns the error count. */
556 struct search_path *dir, *dirn;
557 cpp_context *context, *contextn;
558 tokenrun *run, *runn;
560 free_chain (CPP_OPTION (pfile, pending)->include_head);
561 free (CPP_OPTION (pfile, pending));
562 free (pfile->op_stack);
564 while (CPP_BUFFER (pfile) != NULL)
565 _cpp_pop_buffer (pfile);
567 if (pfile->macro_buffer)
569 free ((PTR) pfile->macro_buffer);
570 pfile->macro_buffer = NULL;
571 pfile->macro_buffer_len = 0;
574 deps_free (pfile->deps);
575 obstack_free (&pfile->buffer_ob, 0);
577 _cpp_destroy_hashtable (pfile);
578 _cpp_cleanup_includes (pfile);
580 _cpp_free_buff (pfile->a_buff);
581 _cpp_free_buff (pfile->u_buff);
582 _cpp_free_buff (pfile->free_buffs);
584 for (run = &pfile->base_run; run; run = runn)
588 if (run != &pfile->base_run)
592 for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn)
595 free ((PTR) dir->name);
599 for (context = pfile->base_context.next; context; context = contextn)
601 contextn = context->next;
605 free_line_maps (&pfile->line_maps);
607 result = pfile->errors;
614 /* This structure defines one built-in identifier. A node will be
615 entered in the hash table under the name NAME, with value VALUE (if
616 any). If flags has OPERATOR, the node's operator field is used; if
617 flags has BUILTIN the node's builtin field is used. Macros that are
618 known at build time should not be flagged BUILTIN, as then they do
619 not appear in macro dumps with e.g. -dM or -dD.
621 Two values are not compile time constants, so we tag
622 them in the FLAGS field instead:
623 VERS value is the global version_string, quoted
624 ULP value is the global user_label_prefix
626 Also, macros with CPLUS set in the flags field are entered only for C++. */
631 unsigned char builtin;
632 unsigned char operator;
633 unsigned short flags;
640 #define OPERATOR 0x10
642 #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 }
643 #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 }
644 #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 }
645 #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 }
646 static const struct builtin builtin_array[] =
648 B("__TIME__", BT_TIME),
649 B("__DATE__", BT_DATE),
650 B("__FILE__", BT_FILE),
651 B("__BASE_FILE__", BT_BASE_FILE),
652 B("__LINE__", BT_SPECLINE),
653 B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL),
654 B("_Pragma", BT_PRAGMA),
656 X("__VERSION__", VERS),
657 X("__USER_LABEL_PREFIX__", ULP),
658 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
659 C("__HAVE_BUILTIN_SETJMP__", "1"),
660 #if USING_SJLJ_EXCEPTIONS
661 /* libgcc needs to know this. */
662 C("__USING_SJLJ_EXCEPTIONS__","1"),
664 #ifndef NO_BUILTIN_SIZE_TYPE
665 C("__SIZE_TYPE__", SIZE_TYPE),
667 #ifndef NO_BUILTIN_PTRDIFF_TYPE
668 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
670 #ifndef NO_BUILTIN_WCHAR_TYPE
671 C("__WCHAR_TYPE__", WCHAR_TYPE),
673 #ifndef NO_BUILTIN_WINT_TYPE
674 C("__WINT_TYPE__", WINT_TYPE),
676 #ifdef STDC_0_IN_SYSTEM_HEADERS
677 B("__STDC__", BT_STDC),
682 /* Named operators known to the preprocessor. These cannot be #defined
683 and always have their stated meaning. They are treated like normal
684 identifiers except for the type code and the meaning. Most of them
685 are only for C++ (but see iso646.h). */
686 O("and", CPP_AND_AND, CPLUS),
687 O("and_eq", CPP_AND_EQ, CPLUS),
688 O("bitand", CPP_AND, CPLUS),
689 O("bitor", CPP_OR, CPLUS),
690 O("compl", CPP_COMPL, CPLUS),
691 O("not", CPP_NOT, CPLUS),
692 O("not_eq", CPP_NOT_EQ, CPLUS),
693 O("or", CPP_OR_OR, CPLUS),
694 O("or_eq", CPP_OR_EQ, CPLUS),
695 O("xor", CPP_XOR, CPLUS),
696 O("xor_eq", CPP_XOR_EQ, CPLUS)
702 #define builtin_array_end (builtin_array + ARRAY_SIZE (builtin_array))
704 /* Subroutine of cpp_read_main_file; reads the builtins table above and
705 enters them, and language-specific macros, into the hash table. */
707 init_builtins (pfile)
710 const struct builtin *b;
712 for(b = builtin_array; b < builtin_array_end; b++)
714 if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus))
717 if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names))
720 if (b->flags & (OPERATOR | BUILTIN))
722 cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len);
723 if (b->flags & OPERATOR)
725 hp->flags |= NODE_OPERATOR;
726 hp->value.operator = b->operator;
731 hp->flags |= NODE_BUILTIN | NODE_WARN;
732 hp->value.builtin = b->builtin;
735 else /* A standard macro of some kind. */
742 /* Allocate enough space for 'name "value"\n\0'. */
743 str = alloca (b->len + strlen (version_string) + 5);
744 sprintf (str, "%s \"%s\"\n", b->name, version_string);
749 val = CPP_OPTION (pfile, user_label_prefix);
753 /* Allocate enough space for "name value\n\0". */
754 str = alloca (b->len + strlen (val) + 3);
755 sprintf(str, "%s %s\n", b->name, val);
758 _cpp_define_builtin (pfile, str);
762 if (CPP_OPTION (pfile, cplusplus))
764 _cpp_define_builtin (pfile, "__cplusplus 1");
765 if (SUPPORTS_ONE_ONLY)
766 _cpp_define_builtin (pfile, "__GXX_WEAK__ 1");
768 _cpp_define_builtin (pfile, "__GXX_WEAK__ 0");
770 if (CPP_OPTION (pfile, objc))
771 _cpp_define_builtin (pfile, "__OBJC__ 1");
773 if (CPP_OPTION (pfile, lang) == CLK_STDC94)
774 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L");
775 else if (CPP_OPTION (pfile, c99))
776 _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L");
778 if (CPP_OPTION (pfile, signed_char) == 0)
779 _cpp_define_builtin (pfile, "__CHAR_UNSIGNED__ 1");
781 if (CPP_OPTION (pfile, lang) == CLK_STDC89
782 || CPP_OPTION (pfile, lang) == CLK_STDC94
783 || CPP_OPTION (pfile, lang) == CLK_STDC99)
784 _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1");
785 else if (CPP_OPTION (pfile, lang) == CLK_ASM)
786 _cpp_define_builtin (pfile, "__ASSEMBLER__ 1");
793 #undef builtin_array_end
795 /* And another subroutine. This one sets up the standard include path. */
797 init_standard_includes (pfile)
801 const struct default_include *p;
802 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
804 /* Several environment variables may add to the include search path.
805 CPATH specifies an additional list of directories to be searched
806 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
807 etc. specify an additional list of directories to be searched as
808 if specified with -isystem, for the language indicated. */
810 GET_ENV_PATH_LIST (path, "CPATH");
811 if (path != 0 && *path != 0)
812 path_include (pfile, path, BRACKET);
814 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
817 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
820 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
823 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
826 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
829 if (path != 0 && *path != 0)
830 path_include (pfile, path, SYSTEM);
832 /* Search "translated" versions of GNU directories.
833 These have /usr/local/lib/gcc... replaced by specd_prefix. */
834 if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len)
836 /* Remove the `include' from /usr/local/lib/gcc.../include.
837 GCC_INCLUDE_DIR will always end in /include. */
838 int default_len = cpp_GCC_INCLUDE_DIR_len;
839 char *default_prefix = (char *) alloca (default_len + 1);
840 int specd_len = strlen (specd_prefix);
842 memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len);
843 default_prefix[default_len] = '\0';
845 for (p = cpp_include_defaults; p->fname; p++)
847 /* Some standard dirs are only for C++. */
849 || (CPP_OPTION (pfile, cplusplus)
850 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
852 /* Does this dir start with the prefix? */
853 if (!memcmp (p->fname, default_prefix, default_len))
855 /* Yes; change prefix and add to search list. */
856 int flen = strlen (p->fname);
857 int this_len = specd_len + flen - default_len;
858 char *str = (char *) xmalloc (this_len + 1);
859 memcpy (str, specd_prefix, specd_len);
860 memcpy (str + specd_len,
861 p->fname + default_len,
862 flen - default_len + 1);
864 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
870 /* Search ordinary names for GNU include directories. */
871 for (p = cpp_include_defaults; p->fname; p++)
873 /* Some standard dirs are only for C++. */
875 || (CPP_OPTION (pfile, cplusplus)
876 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
878 char *str = update_path (p->fname, p->component);
879 append_include_chain (pfile, str, SYSTEM, p->cxx_aware);
884 /* Pushes a command line -imacro and -include file indicated by P onto
885 the buffer stack. Returns non-zero if successful. */
887 push_include (pfile, p)
889 struct pending_option *p;
893 /* Later: maybe update this to use the #include "" search path
894 if cpp_read_file fails. */
895 header.type = CPP_STRING;
896 header.val.str.text = (const unsigned char *) p->arg;
897 header.val.str.len = strlen (p->arg);
898 /* Make the command line directive take up a line. */
901 return _cpp_execute_include (pfile, &header, IT_CMDLINE);
904 /* Frees a pending_option chain. */
907 struct pending_option *head;
909 struct pending_option *next;
919 /* This is called after options have been parsed, and partially
920 processed. Setup for processing input from the file named FNAME,
921 or stdin if it is the empty string. Return the original filename
922 on success (e.g. foo.i->foo.c), or NULL on failure. */
924 cpp_read_main_file (pfile, fname, table)
929 /* The front ends don't set up the hash table until they have
930 finished processing the command line options, so initializing the
931 hashtable is deferred until now. */
932 _cpp_init_hashtable (pfile, table);
934 /* Set up the include search path now. */
935 if (! CPP_OPTION (pfile, no_standard_includes))
936 init_standard_includes (pfile);
938 merge_include_chains (pfile);
940 /* With -v, print the list of dirs to search. */
941 if (CPP_OPTION (pfile, verbose))
943 struct search_path *l;
944 fprintf (stderr, _("#include \"...\" search starts here:\n"));
945 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
947 if (l == CPP_OPTION (pfile, bracket_include))
948 fprintf (stderr, _("#include <...> search starts here:\n"));
949 fprintf (stderr, " %s\n", l->name);
951 fprintf (stderr, _("End of search list.\n"));
954 if (CPP_OPTION (pfile, print_deps))
955 /* Set the default target (if there is none already). */
956 deps_add_default_target (pfile->deps, fname);
958 /* Open the main input file. */
959 if (!_cpp_read_file (pfile, fname))
962 /* Set this after cpp_post_options so the client can change the
963 option if it wishes, and after stacking the main file so we don't
964 trace the main file. */
965 pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names);
967 /* For foo.i, read the original filename foo.c now, for the benefit
968 of the front ends. */
969 if (CPP_OPTION (pfile, preprocessed))
970 read_original_filename (pfile);
972 return pfile->map->to_file;
975 /* For preprocessed files, if the first tokens are of the form # NUM.
976 handle the directive so we know the original file name. This will
977 generate file_change callbacks, which the front ends must handle
978 appropriately given their state of initialization. */
980 read_original_filename (pfile)
983 const cpp_token *token, *token1;
985 /* Lex ahead; if the first tokens are of the form # NUM, then
986 process the directive, otherwise back up. */
987 token = _cpp_lex_direct (pfile);
988 if (token->type == CPP_HASH)
990 token1 = _cpp_lex_direct (pfile);
991 _cpp_backup_tokens (pfile, 1);
993 /* If it's a #line directive, handle it. */
994 if (token1->type == CPP_NUMBER)
996 _cpp_handle_directive (pfile, token->flags & PREV_WHITE);
1001 /* Backup as if nothing happened. */
1002 _cpp_backup_tokens (pfile, 1);
1005 /* Handle pending command line options: -D, -U, -A, -imacros and
1006 -include. This should be called after debugging has been properly
1007 set up in the front ends. */
1009 cpp_finish_options (pfile)
1012 /* Install builtins and process command line macros etc. in the order
1013 they appeared, but only if not already preprocessed. */
1014 if (! CPP_OPTION (pfile, preprocessed))
1016 struct pending_option *p;
1018 _cpp_do_file_change (pfile, LC_RENAME, _("<built-in>"), 1, 0);
1019 init_builtins (pfile);
1020 _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0);
1021 for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next)
1022 (*p->handler) (pfile, p->arg);
1024 /* Scan -imacros files after -D, -U, but before -include.
1025 pfile->next_include_file is NULL, so _cpp_pop_buffer does not
1026 push -include files. */
1027 for (p = CPP_OPTION (pfile, pending)->imacros_head; p; p = p->next)
1028 if (push_include (pfile, p))
1029 cpp_scan_nooutput (pfile);
1031 pfile->next_include_file = &CPP_OPTION (pfile, pending)->include_head;
1032 _cpp_maybe_push_include_file (pfile);
1035 free_chain (CPP_OPTION (pfile, pending)->imacros_head);
1036 free_chain (CPP_OPTION (pfile, pending)->directive_head);
1039 /* Push the next buffer on the stack given by -include, if any. */
1041 _cpp_maybe_push_include_file (pfile)
1044 if (pfile->next_include_file)
1046 struct pending_option *head = *pfile->next_include_file;
1048 while (head && !push_include (pfile, head))
1052 pfile->next_include_file = &head->next;
1055 /* All done; restore the line map from <command line>. */
1056 _cpp_do_file_change (pfile, LC_RENAME,
1057 pfile->line_maps.maps[0].to_file, 1, 0);
1058 /* Don't come back here again. */
1059 pfile->next_include_file = NULL;
1064 /* Use mkdeps.c to output dependency information. */
1069 /* Stream on which to print the dependency information. */
1070 FILE *deps_stream = 0;
1071 const char *const deps_mode =
1072 CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
1074 if (CPP_OPTION (pfile, deps_file)[0] == '\0')
1075 deps_stream = stdout;
1078 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
1079 if (deps_stream == 0)
1081 cpp_errno (pfile, DL_ERROR, CPP_OPTION (pfile, deps_file));
1086 deps_write (pfile->deps, deps_stream, 72);
1088 if (CPP_OPTION (pfile, deps_phony_targets))
1089 deps_phony_targets (pfile->deps, deps_stream);
1091 /* Don't close stdout. */
1092 if (deps_stream != stdout)
1094 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1095 cpp_error (pfile, DL_FATAL, "I/O error on output");
1099 /* This is called at the end of preprocessing. It pops the
1100 last buffer and writes dependency output. It should also
1101 clear macro definitions, such that you could call cpp_start_read
1102 with a new filename to restart processing. */
1107 /* cpplex.c leaves the final buffer on the stack. This it so that
1108 it returns an unending stream of CPP_EOFs to the client. If we
1109 popped the buffer, we'd dereference a NULL buffer pointer and
1110 segfault. It's nice to allow the client to do worry-free excess
1111 cpp_get_token calls. */
1112 while (pfile->buffer)
1113 _cpp_pop_buffer (pfile);
1115 /* Don't write the deps file if preprocessing has failed. */
1116 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1117 output_deps (pfile);
1119 /* Report on headers that could use multiple include guards. */
1120 if (CPP_OPTION (pfile, print_include_names))
1121 _cpp_report_missing_guards (pfile);
1124 /* Add a directive to be handled later in the initialization phase. */
1126 new_pending_directive (pend, text, handler)
1127 struct cpp_pending *pend;
1129 cl_directive_handler handler;
1131 struct pending_option *o = (struct pending_option *)
1132 xmalloc (sizeof (struct pending_option));
1136 o->handler = handler;
1137 APPEND (pend, directive, o);
1140 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1141 I.e. a const string initializer with parens around it. That is
1142 what N_("string") resolves to, so we make no_* be macros instead. */
1143 #define no_arg N_("argument missing after %s")
1144 #define no_ass N_("assertion missing after %s")
1145 #define no_dir N_("directory name missing after %s")
1146 #define no_fil N_("file name missing after %s")
1147 #define no_mac N_("macro name missing after %s")
1148 #define no_pth N_("path name missing after %s")
1149 #define no_num N_("number missing after %s")
1150 #define no_tgt N_("target missing after %s")
1152 /* This is the list of all command line options, with the leading
1153 "-" removed. It must be sorted in ASCII collating order. */
1154 #define COMMAND_LINE_OPTIONS \
1155 DEF_OPT("$", 0, OPT_dollar) \
1156 DEF_OPT("+", 0, OPT_plus) \
1157 DEF_OPT("-help", 0, OPT__help) \
1158 DEF_OPT("-target-help", 0, OPT_target__help) \
1159 DEF_OPT("-version", 0, OPT__version) \
1160 DEF_OPT("A", no_ass, OPT_A) \
1161 DEF_OPT("C", 0, OPT_C) \
1162 DEF_OPT("CC", 0, OPT_CC) \
1163 DEF_OPT("D", no_mac, OPT_D) \
1164 DEF_OPT("H", 0, OPT_H) \
1165 DEF_OPT("I", no_dir, OPT_I) \
1166 DEF_OPT("M", 0, OPT_M) \
1167 DEF_OPT("MD", no_fil, OPT_MD) \
1168 DEF_OPT("MF", no_fil, OPT_MF) \
1169 DEF_OPT("MG", 0, OPT_MG) \
1170 DEF_OPT("MM", 0, OPT_MM) \
1171 DEF_OPT("MMD", no_fil, OPT_MMD) \
1172 DEF_OPT("MP", 0, OPT_MP) \
1173 DEF_OPT("MQ", no_tgt, OPT_MQ) \
1174 DEF_OPT("MT", no_tgt, OPT_MT) \
1175 DEF_OPT("P", 0, OPT_P) \
1176 DEF_OPT("U", no_mac, OPT_U) \
1177 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1178 DEF_OPT("d", no_arg, OPT_d) \
1179 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1180 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1181 DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \
1182 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1183 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1184 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1185 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1186 DEF_OPT("fsigned-char", 0, OPT_fsigned_char) \
1187 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1188 DEF_OPT("funsigned-char", 0, OPT_funsigned_char) \
1189 DEF_OPT("h", 0, OPT_h) \
1190 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1191 DEF_OPT("imacros", no_fil, OPT_imacros) \
1192 DEF_OPT("include", no_fil, OPT_include) \
1193 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1194 DEF_OPT("isystem", no_dir, OPT_isystem) \
1195 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1196 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1197 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1198 DEF_OPT("lang-c", 0, OPT_lang_c) \
1199 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1200 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1201 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1202 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1203 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1204 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1205 DEF_OPT("o", no_fil, OPT_o) \
1206 DEF_OPT("pedantic", 0, OPT_pedantic) \
1207 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1208 DEF_OPT("remap", 0, OPT_remap) \
1209 DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \
1210 DEF_OPT("std=c89", 0, OPT_std_c89) \
1211 DEF_OPT("std=c99", 0, OPT_std_c99) \
1212 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1213 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1214 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1215 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1216 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1217 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1218 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1219 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1220 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1221 DEF_OPT("v", 0, OPT_v) \
1222 DEF_OPT("version", 0, OPT_version) \
1223 DEF_OPT("w", 0, OPT_w)
1225 #define DEF_OPT(text, msg, code) code,
1228 COMMAND_LINE_OPTIONS
1235 const char *opt_text;
1238 enum opt_code opt_code;
1241 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1243 static struct cl_option cl_options[] =
1245 static const struct cl_option cl_options[] =
1248 COMMAND_LINE_OPTIONS
1251 #undef COMMAND_LINE_OPTIONS
1253 /* Perform a binary search to find which, if any, option the given
1254 command-line matches. Returns its index in the option array,
1255 negative on failure. Complications arise since some options can be
1256 suffixed with an argument, and multiple complete matches can occur,
1257 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to
1258 accept options beginning with -W that we do not recognise, but not
1259 to swallow any subsequent command line argument; this is handled as
1260 special cases in cpp_handle_option. */
1262 parse_option (input)
1265 unsigned int md, mn, mx;
1276 opt_len = cl_options[md].opt_len;
1277 comp = memcmp (input, cl_options[md].opt_text, opt_len);
1285 if (input[opt_len] == '\0')
1287 /* We were passed more text. If the option takes an argument,
1288 we may match a later option or we may have been passed the
1289 argument. The longest possible option match succeeds.
1290 If the option takes no arguments we have not matched and
1291 continue the search (e.g. input="stdc++" match was "stdc"). */
1293 if (cl_options[md].msg)
1295 /* Scan forwards. If we get an exact match, return it.
1296 Otherwise, return the longest option-accepting match.
1297 This loops no more than twice with current options. */
1299 for (; mn < (unsigned int) N_OPTS; mn++)
1301 opt_len = cl_options[mn].opt_len;
1302 if (memcmp (input, cl_options[mn].opt_text, opt_len))
1304 if (input[opt_len] == '\0')
1306 if (cl_options[mn].msg)
1317 /* Handle one command-line option in (argc, argv).
1318 Can be called multiple times, to handle multiple sets of options.
1319 If ignore is non-zero, this will ignore unrecognized -W* options.
1320 Returns number of strings consumed. */
1322 cpp_handle_option (pfile, argc, argv, ignore)
1329 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1331 /* Interpret "-" or a non-option as a file name. */
1332 if (argv[i][0] != '-' || argv[i][1] == '\0')
1334 if (CPP_OPTION (pfile, in_fname) == NULL)
1335 CPP_OPTION (pfile, in_fname) = argv[i];
1336 else if (CPP_OPTION (pfile, out_fname) == NULL)
1337 CPP_OPTION (pfile, out_fname) = argv[i];
1339 cpp_error (pfile, DL_FATAL,
1340 "too many filenames. Type %s --help for usage info",
1345 enum opt_code opt_code;
1347 const char *arg = 0;
1349 /* Skip over '-'. */
1350 opt_index = parse_option (&argv[i][1]);
1354 opt_code = cl_options[opt_index].opt_code;
1355 if (cl_options[opt_index].msg)
1357 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1359 /* Yuk. Special case for -W as it must not swallow
1360 up any following argument. If this becomes common, add
1361 another field to the cl_options table. */
1362 if (arg[0] == '\0' && opt_code != OPT_W)
1367 cpp_error (pfile, DL_FATAL,
1368 cl_options[opt_index].msg, argv[i - 1]);
1376 case N_OPTS: /* Shut GCC up. */
1378 case OPT_fleading_underscore:
1379 CPP_OPTION (pfile, user_label_prefix) = "_";
1381 case OPT_fno_leading_underscore:
1382 CPP_OPTION (pfile, user_label_prefix) = "";
1384 case OPT_fno_operator_names:
1385 CPP_OPTION (pfile, operator_names) = 0;
1387 case OPT_fpreprocessed:
1388 CPP_OPTION (pfile, preprocessed) = 1;
1390 case OPT_fno_preprocessed:
1391 CPP_OPTION (pfile, preprocessed) = 0;
1393 case OPT_fshow_column:
1394 CPP_OPTION (pfile, show_column) = 1;
1396 case OPT_fno_show_column:
1397 CPP_OPTION (pfile, show_column) = 0;
1399 case OPT_fsigned_char:
1400 CPP_OPTION (pfile, signed_char) = 1;
1402 case OPT_funsigned_char:
1403 CPP_OPTION (pfile, signed_char) = 0;
1406 /* Silently ignore empty string, non-longs and silly values. */
1410 long tabstop = strtol (arg, &endptr, 10);
1411 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1412 CPP_OPTION (pfile, tabstop) = tabstop;
1416 CPP_OPTION (pfile, inhibit_warnings) = 1;
1421 CPP_OPTION (pfile, help_only) = 1;
1423 case OPT_target__help:
1424 /* Print if any target specific options. cpplib has none, but
1425 make sure help_only gets set. */
1426 CPP_OPTION (pfile, help_only) = 1;
1429 /* --version inhibits compilation, -version doesn't. -v means
1430 verbose and -version. Historical reasons, don't ask. */
1432 CPP_OPTION (pfile, help_only) = 1;
1433 pfile->print_version = 1;
1436 CPP_OPTION (pfile, verbose) = 1;
1437 pfile->print_version = 1;
1440 pfile->print_version = 1;
1444 CPP_OPTION (pfile, discard_comments) = 0;
1447 CPP_OPTION (pfile, discard_comments) = 0;
1448 CPP_OPTION (pfile, discard_comments_in_macro_exp) = 0;
1451 CPP_OPTION (pfile, no_line_commands) = 1;
1453 case OPT_dollar: /* Don't include $ in identifiers. */
1454 CPP_OPTION (pfile, dollars_in_ident) = 0;
1457 CPP_OPTION (pfile, print_include_names) = 1;
1460 new_pending_directive (pend, arg, cpp_define);
1462 case OPT_pedantic_errors:
1463 CPP_OPTION (pfile, pedantic_errors) = 1;
1466 CPP_OPTION (pfile, pedantic) = 1;
1467 CPP_OPTION (pfile, warn_endif_labels) = 1;
1470 CPP_OPTION (pfile, trigraphs) = 1;
1473 CPP_OPTION (pfile, cplusplus) = 1;
1474 CPP_OPTION (pfile, cplusplus_comments) = 1;
1477 CPP_OPTION (pfile, remap) = 1;
1480 CPP_OPTION (pfile, include_prefix) = arg;
1481 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1484 set_lang (pfile, CLK_GNUC89);
1486 case OPT_lang_cplusplus:
1487 set_lang (pfile, CLK_GNUCXX);
1490 set_lang (pfile, CLK_OBJC);
1492 case OPT_lang_objcplusplus:
1493 set_lang (pfile, CLK_OBJCXX);
1496 set_lang (pfile, CLK_ASM);
1498 case OPT_std_cplusplus98:
1499 set_lang (pfile, CLK_CXX98);
1502 set_lang (pfile, CLK_GNUC89);
1506 set_lang (pfile, CLK_GNUC99);
1508 case OPT_std_iso9899_199409:
1509 set_lang (pfile, CLK_STDC94);
1511 case OPT_std_iso9899_1990:
1514 set_lang (pfile, CLK_STDC89);
1516 case OPT_std_iso9899_199x:
1517 case OPT_std_iso9899_1999:
1520 set_lang (pfile, CLK_STDC99);
1523 /* -nostdinc causes no default include directories.
1524 You must specify all include-file directories with -I. */
1525 CPP_OPTION (pfile, no_standard_includes) = 1;
1527 case OPT_nostdincplusplus:
1528 /* -nostdinc++ causes no default C++-specific include directories. */
1529 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1532 if (CPP_OPTION (pfile, out_fname) == NULL)
1533 CPP_OPTION (pfile, out_fname) = arg;
1536 cpp_error (pfile, DL_FATAL, "output filename specified twice");
1541 /* Args to -d specify what parts of macros to dump.
1542 Silently ignore unrecognised options; they may
1543 be aimed at the compiler proper. */
1547 while ((c = *arg++) != '\0')
1551 CPP_OPTION (pfile, dump_macros) = dump_only;
1552 CPP_OPTION (pfile, no_output) = 1;
1555 CPP_OPTION (pfile, dump_macros) = dump_names;
1558 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1561 CPP_OPTION (pfile, dump_includes) = 1;
1568 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1571 /* When doing dependencies with -M or -MM, suppress normal
1572 preprocessed output, but still do -dM etc. as software
1573 depends on this. Preprocessed output occurs if -MD, -MMD
1574 or environment var dependency generation is used. */
1575 CPP_OPTION (pfile, print_deps) = 2;
1576 CPP_OPTION (pfile, no_output) = 1;
1579 CPP_OPTION (pfile, print_deps) = 1;
1580 CPP_OPTION (pfile, no_output) = 1;
1583 CPP_OPTION (pfile, deps_file) = arg;
1586 CPP_OPTION (pfile, deps_phony_targets) = 1;
1590 /* Add a target. -MQ quotes for Make. */
1591 deps_add_target (pfile->deps, arg, opt_code == OPT_MQ);
1595 CPP_OPTION (pfile, print_deps) = 2;
1596 CPP_OPTION (pfile, deps_file) = arg;
1599 CPP_OPTION (pfile, print_deps) = 1;
1600 CPP_OPTION (pfile, deps_file) = arg;
1606 /* -A with an argument beginning with '-' acts as
1607 #unassert on whatever immediately follows the '-'.
1608 If "-" is the whole argument, we eliminate all
1609 predefined macros and assertions, including those
1610 that were specified earlier on the command line.
1611 That way we can get rid of any that were passed
1612 automatically in from GCC. */
1616 free_chain (pend->directive_head);
1617 pend->directive_head = NULL;
1618 pend->directive_tail = NULL;
1621 new_pending_directive (pend, arg + 1, cpp_unassert);
1624 new_pending_directive (pend, arg, cpp_assert);
1627 new_pending_directive (pend, arg, cpp_undef);
1629 case OPT_I: /* Add directory to path for includes. */
1630 if (!strcmp (arg, "-"))
1633 Use the preceding -I directories for #include "..."
1634 but not #include <...>.
1635 Don't search the directory of the present file
1636 for #include "...". (Note that -I. -I- is not the same as
1637 the default setup; -I. uses the compiler's working dir.) */
1638 if (! CPP_OPTION (pfile, ignore_srcdir))
1640 pend->quote_head = pend->brack_head;
1641 pend->quote_tail = pend->brack_tail;
1642 pend->brack_head = 0;
1643 pend->brack_tail = 0;
1644 CPP_OPTION (pfile, ignore_srcdir) = 1;
1648 cpp_error (pfile, DL_FATAL, "-I- specified twice");
1653 append_include_chain (pfile, xstrdup (arg), BRACKET, 0);
1656 /* Add directory to beginning of system include path, as a system
1657 include directory. */
1658 append_include_chain (pfile, xstrdup (arg), SYSTEM, 0);
1663 struct pending_option *o = (struct pending_option *)
1664 xmalloc (sizeof (struct pending_option));
1668 if (opt_code == OPT_include)
1669 APPEND (pend, include, o);
1671 APPEND (pend, imacros, o);
1674 case OPT_iwithprefix:
1675 /* Add directory to end of path for includes,
1676 with the default prefix at the front of its name. */
1678 case OPT_iwithprefixbefore:
1679 /* Add directory to main path for includes,
1680 with the default prefix at the front of its name. */
1687 if (CPP_OPTION (pfile, include_prefix) != 0)
1689 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1690 fname = xmalloc (ipl + len + 1);
1691 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1692 memcpy (fname + ipl, arg, len + 1);
1694 else if (cpp_GCC_INCLUDE_DIR_len)
1696 fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1);
1697 memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len);
1698 memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1);
1701 fname = xstrdup (arg);
1703 append_include_chain (pfile, fname,
1704 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1708 /* Add directory to end of path for includes. */
1709 append_include_chain (pfile, xstrdup (arg), AFTER, 0);
1712 /* Silently ignore unrecognised options. */
1713 if (!strcmp (argv[i], "-Wall"))
1715 CPP_OPTION (pfile, warn_trigraphs) = 1;
1716 CPP_OPTION (pfile, warn_comments) = 1;
1718 else if (!strcmp (argv[i], "-Wtraditional"))
1719 CPP_OPTION (pfile, warn_traditional) = 1;
1720 else if (!strcmp (argv[i], "-Wtrigraphs"))
1721 CPP_OPTION (pfile, warn_trigraphs) = 1;
1722 else if (!strcmp (argv[i], "-Wcomment"))
1723 CPP_OPTION (pfile, warn_comments) = 1;
1724 else if (!strcmp (argv[i], "-Wcomments"))
1725 CPP_OPTION (pfile, warn_comments) = 1;
1726 else if (!strcmp (argv[i], "-Wundef"))
1727 CPP_OPTION (pfile, warn_undef) = 1;
1728 else if (!strcmp (argv[i], "-Wimport"))
1729 CPP_OPTION (pfile, warn_import) = 1;
1730 else if (!strcmp (argv[i], "-Werror"))
1731 CPP_OPTION (pfile, warnings_are_errors) = 1;
1732 else if (!strcmp (argv[i], "-Wsystem-headers"))
1733 CPP_OPTION (pfile, warn_system_headers) = 1;
1734 else if (!strcmp (argv[i], "-Wendif-labels"))
1735 CPP_OPTION (pfile, warn_endif_labels) = 1;
1736 else if (!strcmp (argv[i], "-Wno-traditional"))
1737 CPP_OPTION (pfile, warn_traditional) = 0;
1738 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1739 CPP_OPTION (pfile, warn_trigraphs) = 0;
1740 else if (!strcmp (argv[i], "-Wno-comment"))
1741 CPP_OPTION (pfile, warn_comments) = 0;
1742 else if (!strcmp (argv[i], "-Wno-comments"))
1743 CPP_OPTION (pfile, warn_comments) = 0;
1744 else if (!strcmp (argv[i], "-Wno-undef"))
1745 CPP_OPTION (pfile, warn_undef) = 0;
1746 else if (!strcmp (argv[i], "-Wno-import"))
1747 CPP_OPTION (pfile, warn_import) = 0;
1748 else if (!strcmp (argv[i], "-Wno-error"))
1749 CPP_OPTION (pfile, warnings_are_errors) = 0;
1750 else if (!strcmp (argv[i], "-Wno-system-headers"))
1751 CPP_OPTION (pfile, warn_system_headers) = 0;
1752 else if (!strcmp (argv[i], "-Wno-endif-labels"))
1753 CPP_OPTION (pfile, warn_endif_labels) = 0;
1762 /* Handle command-line options in (argc, argv).
1763 Can be called multiple times, to handle multiple sets of options.
1764 Returns if an unrecognized option is seen.
1765 Returns number of strings consumed. */
1767 cpp_handle_options (pfile, argc, argv)
1773 int strings_processed;
1775 for (i = 0; i < argc; i += strings_processed)
1777 strings_processed = cpp_handle_option (pfile, argc - i, argv + i, 1);
1778 if (strings_processed == 0)
1785 /* Extra processing when all options are parsed, after all calls to
1786 cpp_handle_option[s]. Consistency checks etc. */
1788 cpp_post_options (pfile)
1791 if (pfile->print_version)
1793 fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string);
1794 #ifdef TARGET_VERSION
1797 fputc ('\n', stderr);
1800 /* Canonicalize in_fname and out_fname. We guarantee they are not
1801 NULL, and that the empty string represents stdin / stdout. */
1802 if (CPP_OPTION (pfile, in_fname) == NULL
1803 || !strcmp (CPP_OPTION (pfile, in_fname), "-"))
1804 CPP_OPTION (pfile, in_fname) = "";
1806 if (CPP_OPTION (pfile, out_fname) == NULL
1807 || !strcmp (CPP_OPTION (pfile, out_fname), "-"))
1808 CPP_OPTION (pfile, out_fname) = "";
1810 /* -Wtraditional is not useful in C++ mode. */
1811 if (CPP_OPTION (pfile, cplusplus))
1812 CPP_OPTION (pfile, warn_traditional) = 0;
1814 /* Set this if it hasn't been set already. */
1815 if (CPP_OPTION (pfile, user_label_prefix) == NULL)
1816 CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX;
1818 /* Permanently disable macro expansion if we are rescanning
1819 preprocessed text. */
1820 if (CPP_OPTION (pfile, preprocessed))
1821 pfile->state.prevent_expansion = 1;
1823 /* We need to do this after option processing and before
1824 cpp_start_read, as cppmain.c relies on the options->no_output to
1825 set its callbacks correctly before calling cpp_start_read. */
1826 init_dependency_output (pfile);
1828 /* After checking the environment variables, check if -M or -MM has
1829 not been specified, but other -M options have. */
1830 if (CPP_OPTION (pfile, print_deps) == 0 &&
1831 (CPP_OPTION (pfile, print_deps_missing_files)
1832 || CPP_OPTION (pfile, deps_file)
1833 || CPP_OPTION (pfile, deps_phony_targets)))
1834 cpp_error (pfile, DL_FATAL,
1835 "you must additionally specify either -M or -MM");
1838 /* Set up dependency-file output. On exit, if print_deps is non-zero
1839 then deps_file is not NULL; stdout is the empty string. */
1841 init_dependency_output (pfile)
1844 char *spec, *s, *output_file;
1846 /* Either of two environment variables can specify output of deps.
1847 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
1848 where OUTPUT_FILE is the file to write deps info to
1849 and DEPS_TARGET is the target to mention in the deps. */
1851 if (CPP_OPTION (pfile, print_deps) == 0)
1853 spec = getenv ("DEPENDENCIES_OUTPUT");
1855 CPP_OPTION (pfile, print_deps) = 1;
1858 spec = getenv ("SUNPRO_DEPENDENCIES");
1860 CPP_OPTION (pfile, print_deps) = 2;
1865 /* Find the space before the DEPS_TARGET, if there is one. */
1866 s = strchr (spec, ' ');
1869 /* Let the caller perform MAKE quoting. */
1870 deps_add_target (pfile->deps, s + 1, 0);
1871 output_file = (char *) xmalloc (s - spec + 1);
1872 memcpy (output_file, spec, s - spec);
1873 output_file[s - spec] = 0;
1878 /* Command line -MF overrides environment variables and default. */
1879 if (CPP_OPTION (pfile, deps_file) == 0)
1880 CPP_OPTION (pfile, deps_file) = output_file;
1882 CPP_OPTION (pfile, print_deps_append) = 1;
1884 else if (CPP_OPTION (pfile, deps_file) == 0)
1885 /* If -M or -MM was seen without -MF, default output to wherever
1886 was specified with -o. out_fname is non-NULL here. */
1887 CPP_OPTION (pfile, deps_file) = CPP_OPTION (pfile, out_fname);
1890 /* Handle --help output. */
1894 /* To keep the lines from getting too long for some compilers, limit
1895 to about 500 characters (6 lines) per chunk. */
1898 -include <file> Include the contents of <file> before other files\n\
1899 -imacros <file> Accept definition of macros in <file>\n\
1900 -iprefix <path> Specify <path> as a prefix for next two options\n\
1901 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1902 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1903 -isystem <dir> Add <dir> to the start of the system include path\n\
1906 -idirafter <dir> Add <dir> to the end of the system include path\n\
1907 -I <dir> Add <dir> to the end of the main include path\n\
1908 -I- Fine-grained include path control; see info docs\n\
1909 -nostdinc Do not search system include directories\n\
1910 (dirs specified with -isystem will still be used)\n\
1911 -nostdinc++ Do not search system include directories for C++\n\
1912 -o <file> Put output into <file>\n\
1915 -pedantic Issue all warnings demanded by strict ISO C\n\
1916 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1917 -trigraphs Support ISO C trigraphs\n\
1918 -lang-c Assume that the input sources are in C\n\
1919 -lang-c89 Assume that the input sources are in C89\n\
1922 -lang-c++ Assume that the input sources are in C++\n\
1923 -lang-objc Assume that the input sources are in ObjectiveC\n\
1924 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1925 -lang-asm Assume that the input sources are in assembler\n\
1928 -std=<std name> Specify the conformance standard; one of:\n\
1929 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1930 iso9899:199409, iso9899:1999\n\
1931 -+ Allow parsing of C++ style features\n\
1932 -w Inhibit warning messages\n\
1933 -Wtrigraphs Warn if trigraphs are encountered\n\
1934 -Wno-trigraphs Do not warn about trigraphs\n\
1935 -Wcomment{s} Warn if one comment starts inside another\n\
1938 -Wno-comment{s} Do not warn about comments\n\
1939 -Wtraditional Warn about features not present in traditional C\n\
1940 -Wno-traditional Do not warn about traditional C\n\
1941 -Wundef Warn if an undefined macro is used by #if\n\
1942 -Wno-undef Do not warn about testing undefined macros\n\
1943 -Wimport Warn about the use of the #import directive\n\
1946 -Wno-import Do not warn about the use of #import\n\
1947 -Werror Treat all warnings as errors\n\
1948 -Wno-error Do not treat warnings as errors\n\
1949 -Wsystem-headers Do not suppress warnings from system headers\n\
1950 -Wno-system-headers Suppress warnings from system headers\n\
1951 -Wall Enable all preprocessor warnings\n\
1954 -M Generate make dependencies\n\
1955 -MM As -M, but ignore system header files\n\
1956 -MD Generate make dependencies and compile\n\
1957 -MMD As -MD, but ignore system header files\n\
1958 -MF <file> Write dependency output to the given file\n\
1959 -MG Treat missing header file as generated files\n\
1962 -MP Generate phony targets for all headers\n\
1963 -MQ <target> Add a MAKE-quoted target\n\
1964 -MT <target> Add an unquoted target\n\
1967 -D<macro> Define a <macro> with string '1' as its value\n\
1968 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1969 -A<question>=<answer> Assert the <answer> to <question>\n\
1970 -A-<question>=<answer> Disable the <answer> to <question>\n\
1971 -U<macro> Undefine <macro> \n\
1972 -v Display the version number\n\
1975 -H Print the name of header files as they are used\n\
1976 -C Do not discard comments\n\
1977 -dM Display a list of macro definitions active at end\n\
1978 -dD Preserve macro definitions in output\n\
1979 -dN As -dD except that only the names are preserved\n\
1980 -dI Include #include directives in the output\n\
1983 -fpreprocessed Treat the input file as already preprocessed\n\
1984 -ftabstop=<number> Distance between tab stops for column reporting\n\
1985 -P Do not generate #line directives\n\
1986 -$ Do not allow '$' in identifiers\n\
1987 -remap Remap file names when including files\n\
1988 --version Display version information\n\
1989 -h or --help Display this information\n\