2 Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000 Free Software Foundation, Inc.
4 Contributed by Per Bothner, 1994-95.
5 Based on CCCP program by Paul Rubin, June 1986
6 Adapted to ANSI C, Richard Stallman, Jan 1987
8 This program is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by the
10 Free Software Foundation; either version 2, or (at your option) any
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 #include "cppdefault.h"
33 /* Predefined symbols, built-in macros, and the default include path. */
35 #ifndef GET_ENV_PATH_LIST
36 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
39 /* Windows does not natively support inodes, and neither does MSDOS.
40 Cygwin's emulation can generate non-unique inodes, so don't use it.
41 VMS has non-numeric inodes. */
43 #define INO_T_EQ(a, b) (!memcmp (&(a), &(b), sizeof (a)))
44 #elif (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
45 #define INO_T_EQ(a, b) 0
47 #define INO_T_EQ(a, b) ((a) == (b))
50 /* Internal structures and prototypes. */
52 /* A `struct pending_option' remembers one -D, -A, -U, -include, or -imacros
53 switch. There are four lists: one for -D and -U, one for -A, one
54 for -include, one for -imacros. `undef' is set for -U, clear for
55 -D, ignored for the others.
56 (Future: add an equivalent of -U for -A) */
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_start_read. 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 file_name_list
*quote_head
, *quote_tail
;
75 struct file_name_list
*brack_head
, *brack_tail
;
76 struct file_name_list
*systm_head
, *systm_tail
;
77 struct file_name_list
*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
*,
101 static void initialize_builtins
PARAMS ((cpp_reader
*));
102 static void append_include_chain
PARAMS ((cpp_reader
*,
103 struct cpp_pending
*,
105 static void merge_include_chains
PARAMS ((cpp_reader
*));
107 static void initialize_dependency_output
PARAMS ((cpp_reader
*));
108 static void initialize_standard_includes
PARAMS ((cpp_reader
*));
109 static void new_pending_directive
PARAMS ((struct cpp_pending
*,
111 cl_directive_handler
));
113 static int opt_comp
PARAMS ((const void *, const void *));
114 static void sort_options
PARAMS ((void));
116 static int parse_option
PARAMS ((const char *));
117 static int dump_macros_helper
PARAMS ((cpp_reader
*, cpp_hashnode
*));
119 /* Fourth argument to append_include_chain: chain to use */
120 enum { QUOTE
= 0, BRACKET
, SYSTEM
, AFTER
};
122 /* If we have designated initializers (GCC >2.7) this table can be
123 initialized, constant data. Otherwise, it has to be filled in at
126 #if (GCC_VERSION >= 2007)
127 #define init_IStable() /* nothing */
128 #define ISTABLE __extension__ const unsigned char _cpp_IStable[256] = {
130 #define s(p, v) [p] = v,
132 #define ISTABLE unsigned char _cpp_IStable[256] = { 0 }; \
133 static void init_IStable PARAMS ((void)) { \
134 unsigned char *x = _cpp_IStable;
136 #define s(p, v) x[p] = v;
139 #define A(x) s(x, ISidnum|ISidstart)
140 #define N(x) s(x, ISidnum|ISnumstart)
141 #define H(x) s(x, IShspace|ISspace)
142 #define V(x) s(x, ISvspace|ISspace)
143 #define S(x) s(x, ISspace)
148 A('a') A('b') A('c') A('d') A('e') A('f') A('g') A('h') A('i')
149 A('j') A('k') A('l') A('m') A('n') A('o') A('p') A('q') A('r')
150 A('s') A('t') A('u') A('v') A('w') A('x') A('y') A('z')
152 A('A') A('B') A('C') A('D') A('E') A('F') A('G') A('H') A('I')
153 A('J') A('K') A('L') A('M') A('N') A('O') A('P') A('Q') A('R')
154 A('S') A('T') A('U') A('V') A('W') A('X') A('Y') A('Z')
156 N('1') N('2') N('3') N('4') N('5') N('6') N('7') N('8') N('9') N('0')
162 S('\0') S('\v') S('\f')
174 /* Given a colon-separated list of file names PATH,
175 add all the names to the search path for include files. */
178 path_include (pfile
, pend
, list
, path
)
180 struct cpp_pending
*pend
;
190 /* Find the end of this name. */
192 while (*q
!= 0 && *q
!= PATH_SEPARATOR
) q
++;
195 /* An empty name in the path stands for the current directory. */
196 name
= (char *) xmalloc (2);
202 /* Otherwise use the directory that is named. */
203 name
= (char *) xmalloc (q
- p
+ 1);
204 memcpy (name
, p
, q
- p
);
208 append_include_chain (pfile
, pend
, name
, path
, 0);
210 /* Advance past this name. */
218 /* Append DIR to include path PATH. DIR must be permanently allocated
221 append_include_chain (pfile
, pend
, dir
, path
, cxx_aware
)
223 struct cpp_pending
*pend
;
228 struct file_name_list
*new;
232 _cpp_simplify_pathname (dir
);
235 /* Dirs that don't exist are silently ignored. */
237 cpp_notice_from_errno (pfile
, dir
);
238 else if (CPP_OPTION (pfile
, verbose
))
239 fprintf (stderr
, _("ignoring nonexistent directory \"%s\"\n"), dir
);
243 if (!S_ISDIR (st
.st_mode
))
245 cpp_notice (pfile
, "%s: Not a directory", dir
);
250 if (len
> pfile
->max_include_len
)
251 pfile
->max_include_len
= len
;
253 new = (struct file_name_list
*) xmalloc (sizeof (struct file_name_list
));
256 new->ino
= st
.st_ino
;
257 new->dev
= st
.st_dev
;
259 new->sysp
= cxx_aware
? 1 : 2;
262 new->name_map
= NULL
;
268 case QUOTE
: APPEND (pend
, quote
, new); break;
269 case BRACKET
: APPEND (pend
, brack
, new); break;
270 case SYSTEM
: APPEND (pend
, systm
, new); break;
271 case AFTER
: APPEND (pend
, after
, new); break;
275 /* Merge the four include chains together in the order quote, bracket,
276 system, after. Remove duplicate dirs (as determined by
277 INO_T_EQ()). The system_include and after_include chains are never
278 referred to again after this function; all access is through the
279 bracket_include path.
281 For the future: Check if the directory is empty (but
282 how?) and possibly preload the include hash. */
285 merge_include_chains (pfile
)
288 struct file_name_list
*prev
, *cur
, *other
;
289 struct file_name_list
*quote
, *brack
, *systm
, *after
;
290 struct file_name_list
*qtail
, *btail
, *stail
, *atail
;
292 struct cpp_pending
*pend
= CPP_OPTION (pfile
, pending
);
294 qtail
= pend
->quote_tail
;
295 btail
= pend
->brack_tail
;
296 stail
= pend
->systm_tail
;
297 atail
= pend
->after_tail
;
299 quote
= pend
->quote_head
;
300 brack
= pend
->brack_head
;
301 systm
= pend
->systm_head
;
302 after
= pend
->after_head
;
304 /* Paste together bracket, system, and after include chains. */
314 /* This is a bit tricky.
315 First we drop dupes from the quote-include list.
316 Then we drop dupes from the bracket-include list.
317 Finally, if qtail and brack are the same directory,
320 We can't just merge the lists and then uniquify them because
321 then we may lose directories from the <> search path that should
322 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
323 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
324 -Ibar -I- -Ifoo -Iquux.
326 Note that this algorithm is quadratic in the number of -I switches,
327 which is acceptable since there aren't usually that many of them. */
329 for (cur
= quote
, prev
= NULL
; cur
; cur
= cur
->next
)
331 for (other
= quote
; other
!= cur
; other
= other
->next
)
332 if (INO_T_EQ (cur
->ino
, other
->ino
)
333 && cur
->dev
== other
->dev
)
335 if (CPP_OPTION (pfile
, verbose
))
336 fprintf (stderr
, _("ignoring duplicate directory \"%s\"\n"),
339 prev
->next
= cur
->next
;
349 for (cur
= brack
; cur
; cur
= cur
->next
)
351 for (other
= brack
; other
!= cur
; other
= other
->next
)
352 if (INO_T_EQ (cur
->ino
, other
->ino
)
353 && cur
->dev
== other
->dev
)
355 if (CPP_OPTION (pfile
, verbose
))
356 fprintf (stderr
, _("ignoring duplicate directory \"%s\"\n"),
359 prev
->next
= cur
->next
;
370 if (INO_T_EQ (qtail
->ino
, brack
->ino
) && qtail
->dev
== brack
->dev
)
374 if (CPP_OPTION (pfile
, verbose
))
375 fprintf (stderr
, _("ignoring duplicate directory \"%s\"\n"),
385 while (cur
->next
!= qtail
)
388 if (CPP_OPTION (pfile
, verbose
))
389 fprintf (stderr
, _("ignoring duplicate directory \"%s\"\n"),
402 CPP_OPTION (pfile
, quote_include
) = quote
;
403 CPP_OPTION (pfile
, bracket_include
) = brack
;
407 /* Initialize a cpp_reader structure. */
409 cpp_reader_init (pfile
)
416 memset ((char *) pfile
, 0, sizeof (cpp_reader
));
418 pfile
->token_buffer_size
= 200;
419 pfile
->token_buffer
= (U_CHAR
*) xmalloc (pfile
->token_buffer_size
);
420 CPP_SET_WRITTEN (pfile
, 0);
422 CPP_OPTION (pfile
, dollars_in_ident
) = 1;
423 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
424 CPP_OPTION (pfile
, warn_import
) = 1;
425 CPP_OPTION (pfile
, warn_paste
) = 1;
426 CPP_OPTION (pfile
, digraphs
) = 1;
427 CPP_OPTION (pfile
, discard_comments
) = 1;
428 CPP_OPTION (pfile
, show_column
) = 1;
429 CPP_OPTION (pfile
, tabstop
) = 8;
431 CPP_OPTION (pfile
, pending
) =
432 (struct cpp_pending
*) xcalloc (1, sizeof (struct cpp_pending
));
434 _cpp_init_macros (pfile
);
435 _cpp_init_stacks (pfile
);
436 _cpp_init_includes (pfile
);
439 /* Initialize a cpp_printer structure. As a side effect, open the
442 cpp_printer_init (pfile
, print
)
446 memset (print
, '\0', sizeof (cpp_printer
));
447 if (CPP_OPTION (pfile
, out_fname
) == NULL
)
448 CPP_OPTION (pfile
, out_fname
) = "";
450 if (CPP_OPTION (pfile
, out_fname
)[0] == '\0')
451 print
->outf
= stdout
;
454 print
->outf
= fopen (CPP_OPTION (pfile
, out_fname
), "w");
457 cpp_notice_from_errno (pfile
, CPP_OPTION (pfile
, out_fname
));
464 /* Free resources used by PFILE.
465 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
470 while (CPP_BUFFER (pfile
) != NULL
)
471 cpp_pop_buffer (pfile
);
473 if (pfile
->token_buffer
)
475 free (pfile
->token_buffer
);
476 pfile
->token_buffer
= NULL
;
480 deps_free (pfile
->deps
);
482 if (pfile
->spec_nodes
)
483 free (pfile
->spec_nodes
);
485 _cpp_free_temp_tokens (pfile
);
486 _cpp_cleanup_includes (pfile
);
487 _cpp_cleanup_stacks (pfile
);
488 _cpp_cleanup_macros (pfile
);
492 /* This structure defines one built-in macro. A node of type TYPE will
493 be entered in the macro hash table under the name NAME, with value
494 VALUE (if any). If TYPE is T_OPERATOR, the CODE field is used instead.
496 Two values are not compile time constants, so we tag
497 them in the FLAGS field instead:
498 VERS value is the global version_string, quoted
499 ULP value is the global user_label_prefix
501 Also, macros with CPLUS set in the flags field are entered only for C++.
510 unsigned short flags
;
517 #define B(n, t) { U n, 0, 0, t, 0, sizeof n - 1 }
518 #define C(n, v) { U n, v, 0, T_MACRO, 0, sizeof n - 1 }
519 #define X(n, f) { U n, 0, 0, T_MACRO, f, sizeof n - 1 }
520 #define O(n, c, f) { U n, 0, c, T_OPERATOR, f, sizeof n - 1 }
521 static const struct builtin builtin_array
[] =
523 B("__TIME__", T_TIME
),
524 B("__DATE__", T_DATE
),
525 B("__FILE__", T_FILE
),
526 B("__BASE_FILE__", T_BASE_FILE
),
527 B("__LINE__", T_SPECLINE
),
528 B("__INCLUDE_LEVEL__", T_INCLUDE_LEVEL
),
529 B("__STDC__", T_STDC
),
531 X("__VERSION__", VERS
),
532 X("__USER_LABEL_PREFIX__", ULP
),
533 C("__REGISTER_PREFIX__", REGISTER_PREFIX
),
534 C("__HAVE_BUILTIN_SETJMP__", "1"),
535 #ifndef NO_BUILTIN_SIZE_TYPE
536 C("__SIZE_TYPE__", SIZE_TYPE
),
538 #ifndef NO_BUILTIN_PTRDIFF_TYPE
539 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE
),
541 #ifndef NO_BUILTIN_WCHAR_TYPE
542 C("__WCHAR_TYPE__", WCHAR_TYPE
),
545 /* Named operators known to the preprocessor. These cannot be #defined
546 and always have their stated meaning. They are treated like normal
547 string tokens except for the type code and the meaning. Most of them
548 are only for C++ (but see iso646.h). */
549 O("defined", CPP_DEFINED
, 0),
550 O("and", CPP_AND_AND
, CPLUS
),
551 O("and_eq", CPP_AND_EQ
, CPLUS
),
552 O("bitand", CPP_AND
, CPLUS
),
553 O("bitor", CPP_OR
, CPLUS
),
554 O("compl", CPP_COMPL
, CPLUS
),
555 O("not", CPP_NOT
, CPLUS
),
556 O("not_eq", CPP_NOT_EQ
, CPLUS
),
557 O("or", CPP_OR_OR
, CPLUS
),
558 O("or_eq", CPP_OR_EQ
, CPLUS
),
559 O("xor", CPP_XOR
, CPLUS
),
560 O("xor_eq", CPP_XOR_EQ
, CPLUS
),
565 #define builtin_array_end \
566 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
568 /* Subroutine of cpp_start_read; reads the builtins table above and
569 enters the macros into the hash table. */
571 initialize_builtins (pfile
)
574 const struct builtin
*b
;
575 for(b
= builtin_array
; b
< builtin_array_end
; b
++)
577 if (b
->flags
& CPLUS
&& ! CPP_OPTION (pfile
, cplusplus
))
580 if (b
->type
== T_MACRO
)
587 /* Allocate enough space for 'name="value"\0'. */
588 str
= xmalloc (b
->len
+ strlen (version_string
) + 4);
589 sprintf (str
, "%s=\"%s\"", b
->name
, version_string
);
594 val
= user_label_prefix
;
598 /* Allocate enough space for "name=value\0". */
599 str
= xmalloc (b
->len
+ strlen (val
) + 2);
600 sprintf(str
, "%s=%s", b
->name
, val
);
602 cpp_define (pfile
, str
);
606 cpp_hashnode
*hp
= cpp_lookup (pfile
, b
->name
, b
->len
);
608 if (b
->type
== T_OPERATOR
)
609 hp
->value
.code
= b
->code
;
615 #undef builtin_array_end
617 /* Another subroutine of cpp_start_read. This one sets up to do
618 dependency-file output. */
620 initialize_dependency_output (pfile
)
623 char *spec
, *s
, *output_file
;
625 /* Either of two environment variables can specify output of deps.
626 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
627 where OUTPUT_FILE is the file to write deps info to
628 and DEPS_TARGET is the target to mention in the deps. */
630 if (CPP_OPTION (pfile
, print_deps
) == 0)
632 spec
= getenv ("DEPENDENCIES_OUTPUT");
634 CPP_OPTION (pfile
, print_deps
) = 1;
637 spec
= getenv ("SUNPRO_DEPENDENCIES");
639 CPP_OPTION (pfile
, print_deps
) = 2;
644 /* Find the space before the DEPS_TARGET, if there is one. */
645 s
= strchr (spec
, ' ');
648 CPP_OPTION (pfile
, deps_target
) = s
+ 1;
649 output_file
= (char *) xmalloc (s
- spec
+ 1);
650 memcpy (output_file
, spec
, s
- spec
);
651 output_file
[s
- spec
] = 0;
655 CPP_OPTION (pfile
, deps_target
) = 0;
659 CPP_OPTION (pfile
, deps_file
) = output_file
;
660 CPP_OPTION (pfile
, print_deps_append
) = 1;
663 pfile
->deps
= deps_init ();
665 /* Print the expected object file name as the target of this Make-rule. */
666 if (CPP_OPTION (pfile
, deps_target
))
667 deps_add_target (pfile
->deps
, CPP_OPTION (pfile
, deps_target
));
668 else if (*CPP_OPTION (pfile
, in_fname
) == 0)
669 deps_add_target (pfile
->deps
, "-");
671 deps_calc_target (pfile
->deps
, CPP_OPTION (pfile
, in_fname
));
673 if (CPP_OPTION (pfile
, in_fname
))
674 deps_add_dep (pfile
->deps
, CPP_OPTION (pfile
, in_fname
));
677 /* And another subroutine. This one sets up the standard include path. */
679 initialize_standard_includes (pfile
)
683 const struct default_include
*p
;
684 const char *specd_prefix
= CPP_OPTION (pfile
, include_prefix
);
686 /* Several environment variables may add to the include search path.
687 CPATH specifies an additional list of directories to be searched
688 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
689 etc. specify an additional list of directories to be searched as
690 if specified with -isystem, for the language indicated. */
692 GET_ENV_PATH_LIST (path
, "CPATH");
693 if (path
!= 0 && *path
!= 0)
694 path_include (pfile
, CPP_OPTION (pfile
, pending
), path
, BRACKET
);
696 switch ((CPP_OPTION (pfile
, objc
) << 1) + CPP_OPTION (pfile
, cplusplus
))
699 GET_ENV_PATH_LIST (path
, "C_INCLUDE_PATH");
702 GET_ENV_PATH_LIST (path
, "CPLUS_INCLUDE_PATH");
705 GET_ENV_PATH_LIST (path
, "OBJC_INCLUDE_PATH");
708 GET_ENV_PATH_LIST (path
, "OBJCPLUS_INCLUDE_PATH");
711 if (path
!= 0 && *path
!= 0)
712 path_include (pfile
, CPP_OPTION (pfile
, pending
), path
, SYSTEM
);
714 /* Search "translated" versions of GNU directories.
715 These have /usr/local/lib/gcc... replaced by specd_prefix. */
716 if (specd_prefix
!= 0 && cpp_GCC_INCLUDE_DIR_len
)
718 /* Remove the `include' from /usr/local/lib/gcc.../include.
719 GCC_INCLUDE_DIR will always end in /include. */
720 int default_len
= cpp_GCC_INCLUDE_DIR_len
;
721 char *default_prefix
= (char *) alloca (default_len
+ 1);
722 int specd_len
= strlen (specd_prefix
);
724 memcpy (default_prefix
, cpp_GCC_INCLUDE_DIR
, default_len
);
725 default_prefix
[default_len
] = '\0';
727 for (p
= cpp_include_defaults
; p
->fname
; p
++)
729 /* Some standard dirs are only for C++. */
731 || (CPP_OPTION (pfile
, cplusplus
)
732 && !CPP_OPTION (pfile
, no_standard_cplusplus_includes
)))
734 /* Does this dir start with the prefix? */
735 if (!strncmp (p
->fname
, default_prefix
, default_len
))
737 /* Yes; change prefix and add to search list. */
738 int flen
= strlen (p
->fname
);
739 int this_len
= specd_len
+ flen
- default_len
;
740 char *str
= (char *) xmalloc (this_len
+ 1);
741 memcpy (str
, specd_prefix
, specd_len
);
742 memcpy (str
+ specd_len
,
743 p
->fname
+ default_len
,
744 flen
- default_len
+ 1);
746 append_include_chain (pfile
, CPP_OPTION (pfile
, pending
),
747 str
, SYSTEM
, p
->cxx_aware
);
753 /* Search ordinary names for GNU include directories. */
754 for (p
= cpp_include_defaults
; p
->fname
; p
++)
756 /* Some standard dirs are only for C++. */
758 || (CPP_OPTION (pfile
, cplusplus
)
759 && !CPP_OPTION (pfile
, no_standard_cplusplus_includes
)))
761 /* XXX Potential memory leak! */
762 char *str
= xstrdup (update_path (p
->fname
, p
->component
));
763 append_include_chain (pfile
, CPP_OPTION (pfile
, pending
),
764 str
, SYSTEM
, p
->cxx_aware
);
769 /* This is called after options have been processed.
770 * Check options for consistency, and setup for processing input
771 * from the file named FNAME. (Use standard input if FNAME==NULL.)
772 * Return 1 on success, 0 on failure.
776 cpp_start_read (pfile
, print
, fname
)
781 struct pending_option
*p
, *q
;
783 /* -MG doesn't select the form of output and must be specified with one of
784 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
785 inhibit compilation. */
786 if (CPP_OPTION (pfile
, print_deps_missing_files
)
787 && (CPP_OPTION (pfile
, print_deps
) == 0
788 || !CPP_OPTION (pfile
, no_output
)))
790 cpp_fatal (pfile
, "-MG must be specified with one of -M or -MM");
794 /* -Wtraditional is not useful in C++ mode. */
795 if (CPP_OPTION (pfile
, cplusplus
))
796 CPP_OPTION (pfile
, warn_traditional
) = 0;
798 /* Do not warn about illegal token pasting if -lang-asm. */
799 if (CPP_OPTION (pfile
, lang_asm
))
800 CPP_OPTION (pfile
, warn_paste
) = 0;
802 /* Set this if it hasn't been set already. */
803 if (user_label_prefix
== NULL
)
804 user_label_prefix
= USER_LABEL_PREFIX
;
806 /* Figure out if we need to save function macro parameter spellings.
807 We don't use CPP_PEDANTIC() here because that depends on whether
808 or not the current file is a system header, and there is no
810 pfile
->save_parameter_spellings
=
811 CPP_OPTION (pfile
, pedantic
)
812 || CPP_OPTION (pfile
, debug_output
)
813 || CPP_OPTION (pfile
, dump_macros
) == dump_definitions
814 || CPP_OPTION (pfile
, dump_macros
) == dump_only
;
816 /* Set up the IStable. This doesn't do anything if we were compiled
817 with a compiler that supports C99 designated initializers. */
820 /* Set up the tables used by read_and_prescan. */
821 _cpp_init_input_buffer (pfile
);
823 /* Set up the include search path now. */
824 if (! CPP_OPTION (pfile
, no_standard_includes
))
825 initialize_standard_includes (pfile
);
827 merge_include_chains (pfile
);
829 /* With -v, print the list of dirs to search. */
830 if (CPP_OPTION (pfile
, verbose
))
832 struct file_name_list
*l
;
833 fprintf (stderr
, _("#include \"...\" search starts here:\n"));
834 for (l
= CPP_OPTION (pfile
, quote_include
); l
; l
= l
->next
)
836 if (l
== CPP_OPTION (pfile
, bracket_include
))
837 fprintf (stderr
, _("#include <...> search starts here:\n"));
838 fprintf (stderr
, " %s\n", l
->name
);
840 fprintf (stderr
, _("End of search list.\n"));
843 /* Open the main input file. This must be done early, so we have a
844 buffer to stand on. */
845 if (CPP_OPTION (pfile
, in_fname
) == NULL
846 || *CPP_OPTION (pfile
, in_fname
) == 0)
848 CPP_OPTION (pfile
, in_fname
) = fname
;
849 if (CPP_OPTION (pfile
, in_fname
) == NULL
)
850 CPP_OPTION (pfile
, in_fname
) = "";
852 if (CPP_OPTION (pfile
, out_fname
) == NULL
)
853 CPP_OPTION (pfile
, out_fname
) = "";
855 if (!cpp_read_file (pfile
, fname
))
858 initialize_dependency_output (pfile
);
860 /* -D and friends may produce output, which should be identified
863 CPP_BUFFER (pfile
)->lineno
= 0;
866 print
->last_fname
= CPP_BUFFER (pfile
)->nominal_fname
;
867 print
->last_id
= pfile
->include_depth
;
868 print
->written
= CPP_WRITTEN (pfile
);
872 /* Install __LINE__, etc. */
873 initialize_builtins (pfile
);
875 /* Do -U's, -D's and -A's in the order they were seen. */
876 p
= CPP_OPTION (pfile
, pending
)->directive_head
;
879 (*p
->handler
) (pfile
, p
->arg
);
884 pfile
->done_initializing
= 1;
886 /* Now flush any output recorded during initialization, and advance
887 to line 1 of the main input file. */
888 CPP_BUFFER (pfile
)->lineno
= 1;
890 if (print
&& ! CPP_OPTION (pfile
, no_output
))
891 cpp_output_tokens (pfile
, print
, 1);
893 /* The -imacros files can be scanned now, but the -include files
894 have to be pushed onto the include stack and processed later,
895 in the main loop calling cpp_get_token. */
897 p
= CPP_OPTION (pfile
, pending
)->imacros_head
;
900 if (cpp_read_file (pfile
, p
->arg
))
901 cpp_scan_buffer_nooutput (pfile
);
907 p
= CPP_OPTION (pfile
, pending
)->include_head
;
910 if (cpp_read_file (pfile
, p
->arg
)
911 && print
&& ! CPP_OPTION (pfile
, no_output
))
912 cpp_output_tokens (pfile
, print
, 1); /* record entry to file */
918 free (CPP_OPTION (pfile
, pending
));
919 CPP_OPTION (pfile
, pending
) = NULL
;
925 /* Dump out the hash table. */
927 dump_macros_helper (pfile
, hp
)
931 if (hp
->type
== T_MACRO
)
932 _cpp_dump_definition (pfile
, hp
);
936 /* This is called at the end of preprocessing. It pops the
937 last buffer and writes dependency output. It should also
938 clear macro definitions, such that you could call cpp_start_read
939 with a new filename to restart processing. */
941 cpp_finish (pfile
, print
)
945 if (CPP_BUFFER (pfile
))
947 cpp_ice (pfile
, "buffers still stacked in cpp_finish");
948 while (CPP_BUFFER (pfile
))
949 cpp_pop_buffer (pfile
);
952 /* Don't write the deps file if preprocessing has failed. */
953 if (CPP_OPTION (pfile
, print_deps
) && pfile
->errors
== 0)
955 /* Stream on which to print the dependency information. */
956 FILE *deps_stream
= 0;
957 const char *deps_mode
958 = CPP_OPTION (pfile
, print_deps_append
) ? "a" : "w";
959 if (CPP_OPTION (pfile
, deps_file
) == 0)
960 deps_stream
= stdout
;
963 deps_stream
= fopen (CPP_OPTION (pfile
, deps_file
), deps_mode
);
964 if (deps_stream
== 0)
965 cpp_notice_from_errno (pfile
, CPP_OPTION (pfile
, deps_file
));
969 deps_write (pfile
->deps
, deps_stream
, 72);
970 if (CPP_OPTION (pfile
, deps_file
))
972 if (ferror (deps_stream
) || fclose (deps_stream
) != 0)
973 cpp_fatal (pfile
, "I/O error on output");
978 if (CPP_OPTION (pfile
, dump_macros
) == dump_only
)
979 cpp_forall_identifiers (pfile
, dump_macros_helper
);
981 /* Flush any pending output. */
984 cpp_output_tokens (pfile
, print
, print
->lineno
);
985 if (ferror (print
->outf
) || fclose (print
->outf
))
986 cpp_notice_from_errno (pfile
, CPP_OPTION (pfile
, out_fname
));
989 /* Report on headers that could use multiple include guards. */
990 if (CPP_OPTION (pfile
, print_include_names
))
991 _cpp_report_missing_guards (pfile
);
995 new_pending_directive (pend
, text
, handler
)
996 struct cpp_pending
*pend
;
998 cl_directive_handler handler
;
1000 struct pending_option
*o
= (struct pending_option
*)
1001 xmalloc (sizeof (struct pending_option
));
1005 o
->handler
= handler
;
1006 APPEND (pend
, directive
, o
);
1009 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1010 I.e. a const string initializer with parens around it. That is
1011 what N_("string") resolves to, so we make no_* be macros instead. */
1012 #define no_arg N_("Argument missing after %s")
1013 #define no_ass N_("Assertion missing after %s")
1014 #define no_dir N_("Directory name missing after %s")
1015 #define no_fil N_("File name missing after %s")
1016 #define no_mac N_("Macro name missing after %s")
1017 #define no_pth N_("Path name missing after %s")
1018 #define no_num N_("Number missing after %s")
1020 /* This is the list of all command line options, with the leading
1021 "-" removed. It must be sorted in ASCII collating order. */
1022 #define COMMAND_LINE_OPTIONS \
1023 DEF_OPT("", 0, OPT_stdin_stdout) \
1024 DEF_OPT("$", 0, OPT_dollar) \
1025 DEF_OPT("+", 0, OPT_plus) \
1026 DEF_OPT("-help", 0, OPT__help) \
1027 DEF_OPT("-version", 0, OPT__version) \
1028 DEF_OPT("A", no_ass, OPT_A) \
1029 DEF_OPT("C", 0, OPT_C) \
1030 DEF_OPT("D", no_mac, OPT_D) \
1031 DEF_OPT("H", 0, OPT_H) \
1032 DEF_OPT("I", no_dir, OPT_I) \
1033 DEF_OPT("M", 0, OPT_M) \
1034 DEF_OPT("MD", no_fil, OPT_MD) \
1035 DEF_OPT("MG", 0, OPT_MG) \
1036 DEF_OPT("MM", 0, OPT_MM) \
1037 DEF_OPT("MMD", no_fil, OPT_MMD) \
1038 DEF_OPT("P", 0, OPT_P) \
1039 DEF_OPT("U", no_mac, OPT_U) \
1040 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1041 DEF_OPT("d", no_arg, OPT_d) \
1042 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1043 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1044 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1045 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1046 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1047 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1048 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1049 DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
1050 DEF_OPT("h", 0, OPT_h) \
1051 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1052 DEF_OPT("imacros", no_fil, OPT_imacros) \
1053 DEF_OPT("include", no_fil, OPT_include) \
1054 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1055 DEF_OPT("isystem", no_dir, OPT_isystem) \
1056 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1057 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1058 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1059 DEF_OPT("lang-c", 0, OPT_lang_c) \
1060 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1061 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1062 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1063 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1064 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1065 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1066 DEF_OPT("o", no_fil, OPT_o) \
1067 DEF_OPT("pedantic", 0, OPT_pedantic) \
1068 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1069 DEF_OPT("remap", 0, OPT_remap) \
1070 DEF_OPT("std=c89", 0, OPT_std_c89) \
1071 DEF_OPT("std=c99", 0, OPT_std_c99) \
1072 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1073 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1074 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1075 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1076 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1077 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1078 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1079 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1080 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1081 DEF_OPT("v", 0, OPT_v) \
1082 DEF_OPT("w", 0, OPT_w)
1084 #define DEF_OPT(text, msg, code) code,
1087 COMMAND_LINE_OPTIONS
1094 const char *opt_text
;
1097 enum opt_code opt_code
;
1100 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1102 static struct cl_option cl_options
[] =
1104 static const struct cl_option cl_options
[] =
1107 COMMAND_LINE_OPTIONS
1110 #undef COMMAND_LINE_OPTIONS
1116 static int opts_sorted
= 0;
1121 /* For non-ASCII hosts, the array needs to be sorted at runtime */
1122 qsort (cl_options
, N_OPTS
, sizeof (struct cl_option
), opt_comp
);
1128 /* Perform a binary search to find which, if any, option the given
1129 command-line matches. Returns its index in the option array,
1130 negative on failure. Complications arise since some options can be
1131 suffixed with an argument, and multiple complete matches can occur,
1132 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1133 accept options beginning with -g and -W that we do not recognise,
1134 but not to swallow any subsequent command line argument; these are
1135 handled as special cases in cpp_handle_option */
1137 parse_option (input
)
1140 unsigned int md
, mn
, mx
;
1151 opt_len
= cl_options
[md
].opt_len
;
1152 comp
= strncmp (input
, cl_options
[md
].opt_text
, opt_len
);
1160 if (input
[opt_len
] == '\0')
1162 /* We were passed more text. If the option takes an argument,
1163 we may match a later option or we may have been passed the
1164 argument. The longest possible option match succeeds.
1165 If the option takes no arguments we have not matched and
1166 continue the search (e.g. input="stdc++" match was "stdc") */
1168 if (cl_options
[md
].msg
)
1170 /* Scan forwards. If we get an exact match, return it.
1171 Otherwise, return the longest option-accepting match.
1172 This loops no more than twice with current options */
1174 for (; mn
< N_OPTS
; mn
++)
1176 opt_len
= cl_options
[mn
].opt_len
;
1177 if (strncmp (input
, cl_options
[mn
].opt_text
, opt_len
))
1179 if (input
[opt_len
] == '\0')
1181 if (cl_options
[mn
].msg
)
1192 /* Handle one command-line option in (argc, argv).
1193 Can be called multiple times, to handle multiple sets of options.
1194 Returns number of strings consumed. */
1197 cpp_handle_option (pfile
, argc
, argv
)
1203 struct cpp_pending
*pend
= CPP_OPTION (pfile
, pending
);
1205 if (argv
[i
][0] != '-')
1207 if (CPP_OPTION (pfile
, out_fname
) != NULL
)
1208 cpp_fatal (pfile
, "Too many arguments. Type %s --help for usage info",
1210 else if (CPP_OPTION (pfile
, in_fname
) != NULL
)
1211 CPP_OPTION (pfile
, out_fname
) = argv
[i
];
1213 CPP_OPTION (pfile
, in_fname
) = argv
[i
];
1217 enum opt_code opt_code
;
1219 const char *arg
= 0;
1222 opt_index
= parse_option (&argv
[i
][1]);
1226 opt_code
= cl_options
[opt_index
].opt_code
;
1227 if (cl_options
[opt_index
].msg
)
1229 arg
= &argv
[i
][cl_options
[opt_index
].opt_len
+ 1];
1231 /* Yuk. Special case for -g and -W as they must not swallow
1232 up any following argument. If this becomes common, add
1233 another field to the cl_options table */
1234 if (arg
[0] == '\0' && !(opt_code
== OPT_g
|| opt_code
== OPT_W
))
1239 cpp_fatal (pfile
, cl_options
[opt_index
].msg
, argv
[i
- 1]);
1247 case N_OPTS
: /* shut GCC up */
1249 case OPT_fleading_underscore
:
1250 user_label_prefix
= "_";
1252 case OPT_fno_leading_underscore
:
1253 user_label_prefix
= "";
1255 case OPT_fpreprocessed
:
1256 CPP_OPTION (pfile
, preprocessed
) = 1;
1258 case OPT_fno_preprocessed
:
1259 CPP_OPTION (pfile
, preprocessed
) = 0;
1261 case OPT_fshow_column
:
1262 CPP_OPTION (pfile
, show_column
) = 1;
1264 case OPT_fno_show_column
:
1265 CPP_OPTION (pfile
, show_column
) = 0;
1268 /* Silently ignore empty string, non-longs and silly values. */
1272 long tabstop
= strtol (arg
, &endptr
, 10);
1273 if (*endptr
== '\0' && tabstop
>= 1 && tabstop
<= 100)
1274 CPP_OPTION (pfile
, tabstop
) = tabstop
;
1278 CPP_OPTION (pfile
, inhibit_warnings
) = 1;
1280 case OPT_g
: /* Silently ignore anything but -g3 */
1281 if (!strcmp(&argv
[i
][2], "3"))
1282 CPP_OPTION (pfile
, debug_output
) = 1;
1290 fprintf (stderr
, _("GNU CPP version %s (cpplib)\n"), version_string
);
1294 CPP_OPTION (pfile
, discard_comments
) = 0;
1297 CPP_OPTION (pfile
, no_line_commands
) = 1;
1299 case OPT_dollar
: /* Don't include $ in identifiers. */
1300 CPP_OPTION (pfile
, dollars_in_ident
) = 0;
1303 CPP_OPTION (pfile
, print_include_names
) = 1;
1306 new_pending_directive (pend
, arg
, cpp_define
);
1308 case OPT_pedantic_errors
:
1309 CPP_OPTION (pfile
, pedantic_errors
) = 1;
1312 CPP_OPTION (pfile
, pedantic
) = 1;
1315 CPP_OPTION (pfile
, trigraphs
) = 1;
1318 CPP_OPTION (pfile
, cplusplus
) = 1;
1319 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1322 CPP_OPTION (pfile
, remap
) = 1;
1325 CPP_OPTION (pfile
, include_prefix
) = arg
;
1326 CPP_OPTION (pfile
, include_prefix_len
) = strlen (arg
);
1329 CPP_OPTION (pfile
, cplusplus
) = 0;
1330 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1331 CPP_OPTION (pfile
, c89
) = 0;
1332 CPP_OPTION (pfile
, c99
) = 1;
1333 CPP_OPTION (pfile
, digraphs
) = 1;
1334 CPP_OPTION (pfile
, objc
) = 0;
1336 case OPT_lang_cplusplus
:
1337 CPP_OPTION (pfile
, cplusplus
) = 1;
1338 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1339 CPP_OPTION (pfile
, c89
) = 0;
1340 CPP_OPTION (pfile
, c99
) = 0;
1341 CPP_OPTION (pfile
, objc
) = 0;
1342 CPP_OPTION (pfile
, digraphs
) = 1;
1343 new_pending_directive (pend
, "__cplusplus", cpp_define
);
1345 case OPT_lang_objcplusplus
:
1346 CPP_OPTION (pfile
, cplusplus
) = 1;
1347 new_pending_directive (pend
, "__cplusplus", cpp_define
);
1350 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1351 CPP_OPTION (pfile
, c89
) = 0;
1352 CPP_OPTION (pfile
, c99
) = 0;
1353 CPP_OPTION (pfile
, objc
) = 1;
1354 new_pending_directive (pend
, "__OBJC__", cpp_define
);
1357 CPP_OPTION (pfile
, lang_asm
) = 1;
1358 CPP_OPTION (pfile
, dollars_in_ident
) = 0;
1359 new_pending_directive (pend
, "__ASSEMBLER__", cpp_define
);
1362 /* -nostdinc causes no default include directories.
1363 You must specify all include-file directories with -I. */
1364 CPP_OPTION (pfile
, no_standard_includes
) = 1;
1366 case OPT_nostdincplusplus
:
1367 /* -nostdinc++ causes no default C++-specific include directories. */
1368 CPP_OPTION (pfile
, no_standard_cplusplus_includes
) = 1;
1371 CPP_OPTION (pfile
, cplusplus
) = 0;
1372 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1373 CPP_OPTION (pfile
, c89
) = 1;
1374 CPP_OPTION (pfile
, c99
) = 0;
1375 CPP_OPTION (pfile
, objc
) = 0;
1376 CPP_OPTION (pfile
, digraphs
) = 1;
1380 CPP_OPTION (pfile
, cplusplus
) = 0;
1381 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1382 CPP_OPTION (pfile
, c89
) = 0;
1383 CPP_OPTION (pfile
, c99
) = 1;
1384 CPP_OPTION (pfile
, digraphs
) = 1;
1385 CPP_OPTION (pfile
, objc
) = 0;
1386 new_pending_directive (CPP_OPTION (pfile
, pending
),
1387 "__STDC_VERSION__=199901L", cpp_define
);
1389 case OPT_std_iso9899_199409
:
1390 new_pending_directive (CPP_OPTION (pfile
, pending
),
1391 "__STDC_VERSION__=199409L", cpp_define
);
1393 case OPT_std_iso9899_1990
:
1396 CPP_OPTION (pfile
, cplusplus
) = 0;
1397 CPP_OPTION (pfile
, cplusplus_comments
) = 0;
1398 CPP_OPTION (pfile
, c89
) = 1;
1399 CPP_OPTION (pfile
, c99
) = 0;
1400 CPP_OPTION (pfile
, objc
) = 0;
1401 CPP_OPTION (pfile
, digraphs
) = opt_code
== OPT_std_iso9899_199409
;
1402 CPP_OPTION (pfile
, trigraphs
) = 1;
1403 new_pending_directive (pend
, "__STRICT_ANSI__", cpp_define
);
1405 case OPT_std_iso9899_199x
:
1406 case OPT_std_iso9899_1999
:
1409 CPP_OPTION (pfile
, cplusplus
) = 0;
1410 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1411 CPP_OPTION (pfile
, c89
) = 0;
1412 CPP_OPTION (pfile
, c99
) = 1;
1413 CPP_OPTION (pfile
, objc
) = 0;
1414 CPP_OPTION (pfile
, digraphs
) = 1;
1415 CPP_OPTION (pfile
, trigraphs
) = 1;
1416 new_pending_directive (CPP_OPTION (pfile
, pending
),
1417 "__STRICT_ANSI__", cpp_define
);
1418 new_pending_directive (CPP_OPTION (pfile
, pending
),
1419 "__STDC_VERSION__=199901L", cpp_define
);
1422 if (CPP_OPTION (pfile
, out_fname
) != NULL
)
1424 cpp_fatal (pfile
, "Output filename specified twice");
1427 CPP_OPTION (pfile
, out_fname
) = arg
;
1428 if (!strcmp (CPP_OPTION (pfile
, out_fname
), "-"))
1429 CPP_OPTION (pfile
, out_fname
) = "";
1432 fprintf (stderr
, _("GNU CPP version %s (cpplib)\n"), version_string
);
1433 #ifdef TARGET_VERSION
1436 fputc ('\n', stderr
);
1437 CPP_OPTION (pfile
, verbose
) = 1;
1439 case OPT_stdin_stdout
:
1440 /* JF handle '-' as file name meaning stdin or stdout */
1441 if (CPP_OPTION (pfile
, in_fname
) == NULL
)
1442 CPP_OPTION (pfile
, in_fname
) = "";
1443 else if (CPP_OPTION (pfile
, out_fname
) == NULL
)
1444 CPP_OPTION (pfile
, out_fname
) = "";
1447 /* Args to -d specify what parts of macros to dump.
1448 Silently ignore unrecognised options; they may
1449 be aimed at the compiler proper. */
1453 while ((c
= *arg
++) != '\0')
1457 CPP_OPTION (pfile
, dump_macros
) = dump_only
;
1458 CPP_OPTION (pfile
, no_output
) = 1;
1461 CPP_OPTION (pfile
, dump_macros
) = dump_names
;
1464 CPP_OPTION (pfile
, dump_macros
) = dump_definitions
;
1467 CPP_OPTION (pfile
, dump_includes
) = 1;
1472 /* The style of the choices here is a bit mixed.
1473 The chosen scheme is a hybrid of keeping all options in one string
1474 and specifying each option in a separate argument:
1475 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1476 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1477 -M[M][G][D file]. This is awkward to handle in specs, and is not
1479 /* ??? -MG must be specified in addition to one of -M or -MM.
1480 This can be relaxed in the future without breaking anything.
1481 The converse isn't true. */
1483 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1485 CPP_OPTION (pfile
, print_deps_missing_files
) = 1;
1491 if (opt_code
== OPT_M
|| opt_code
== OPT_MD
)
1492 CPP_OPTION (pfile
, print_deps
) = 2;
1494 CPP_OPTION (pfile
, print_deps
) = 1;
1496 /* For -MD and -MMD options, write deps on file named by next arg */
1497 /* For -M and -MM, write deps on standard output
1498 and suppress the usual output. */
1499 if (opt_code
== OPT_MD
|| opt_code
== OPT_MMD
)
1500 CPP_OPTION (pfile
, deps_file
) = arg
;
1502 CPP_OPTION (pfile
, no_output
) = 1;
1507 /* -A with an argument beginning with '-' acts as
1508 #unassert on whatever immediately follows the '-'.
1509 If "-" is the whole argument, we eliminate all
1510 predefined macros and assertions, including those
1511 that were specified earlier on the command line.
1512 That way we can get rid of any that were passed
1513 automatically in from GCC. */
1517 struct pending_option
*o1
, *o2
;
1519 o1
= CPP_OPTION (pfile
, pending
)->directive_head
;
1526 CPP_OPTION (pfile
, pending
)->directive_head
= NULL
;
1527 CPP_OPTION (pfile
, pending
)->directive_tail
= NULL
;
1530 new_pending_directive (CPP_OPTION (pfile
, pending
),
1531 arg
+ 1, cpp_unassert
);
1534 new_pending_directive (CPP_OPTION (pfile
, pending
),
1538 new_pending_directive (CPP_OPTION (pfile
, pending
), arg
, cpp_undef
);
1540 case OPT_I
: /* Add directory to path for includes. */
1541 if (!strcmp (arg
, "-"))
1544 Use the preceding -I directories for #include "..."
1545 but not #include <...>.
1546 Don't search the directory of the present file
1547 for #include "...". (Note that -I. -I- is not the same as
1548 the default setup; -I. uses the compiler's working dir.) */
1549 if (! CPP_OPTION (pfile
, ignore_srcdir
))
1551 struct cpp_pending
*pend
= CPP_OPTION (pfile
, pending
);
1552 pend
->quote_head
= pend
->brack_head
;
1553 pend
->quote_tail
= pend
->brack_tail
;
1554 pend
->brack_head
= 0;
1555 pend
->brack_tail
= 0;
1556 CPP_OPTION (pfile
, ignore_srcdir
) = 1;
1560 cpp_fatal (pfile
, "-I- specified twice");
1565 append_include_chain (pfile
, CPP_OPTION (pfile
, pending
),
1566 xstrdup (arg
), BRACKET
, 0);
1569 /* Add directory to beginning of system include path, as a system
1570 include directory. */
1571 append_include_chain (pfile
, CPP_OPTION (pfile
, pending
),
1572 xstrdup (arg
), SYSTEM
, 0);
1576 struct pending_option
*o
= (struct pending_option
*)
1577 xmalloc (sizeof (struct pending_option
));
1580 /* This list has to be built in reverse order so that
1581 when cpp_start_read pushes all the -include files onto
1582 the buffer stack, they will be scanned in forward order. */
1583 o
->next
= CPP_OPTION (pfile
, pending
)->include_head
;
1584 CPP_OPTION (pfile
, pending
)->include_head
= o
;
1589 struct pending_option
*o
= (struct pending_option
*)
1590 xmalloc (sizeof (struct pending_option
));
1594 APPEND (CPP_OPTION (pfile
, pending
), imacros
, o
);
1597 case OPT_iwithprefix
:
1598 /* Add directory to end of path for includes,
1599 with the default prefix at the front of its name. */
1601 case OPT_iwithprefixbefore
:
1602 /* Add directory to main path for includes,
1603 with the default prefix at the front of its name. */
1610 if (CPP_OPTION (pfile
, include_prefix
) != 0)
1612 size_t ipl
= CPP_OPTION (pfile
, include_prefix_len
);
1613 fname
= xmalloc (ipl
+ len
+ 1);
1614 memcpy (fname
, CPP_OPTION (pfile
, include_prefix
), ipl
);
1615 memcpy (fname
+ ipl
, arg
, len
+ 1);
1617 else if (cpp_GCC_INCLUDE_DIR_len
)
1619 fname
= xmalloc (cpp_GCC_INCLUDE_DIR_len
+ len
+ 1);
1620 memcpy (fname
, cpp_GCC_INCLUDE_DIR
, cpp_GCC_INCLUDE_DIR_len
);
1621 memcpy (fname
+ cpp_GCC_INCLUDE_DIR_len
, arg
, len
+ 1);
1624 fname
= xstrdup (arg
);
1626 append_include_chain (pfile
, CPP_OPTION (pfile
, pending
), fname
,
1627 opt_code
== OPT_iwithprefix
? SYSTEM
: BRACKET
, 0);
1631 /* Add directory to end of path for includes. */
1632 append_include_chain (pfile
, CPP_OPTION (pfile
, pending
),
1633 xstrdup (arg
), AFTER
, 0);
1636 /* Silently ignore unrecognised options */
1637 if (!strcmp (argv
[i
], "-Wall"))
1639 CPP_OPTION (pfile
, warn_trigraphs
) = 1;
1640 CPP_OPTION (pfile
, warn_comments
) = 1;
1642 else if (!strcmp (argv
[i
], "-Wtraditional"))
1643 CPP_OPTION (pfile
, warn_traditional
) = 1;
1644 else if (!strcmp (argv
[i
], "-Wtrigraphs"))
1645 CPP_OPTION (pfile
, warn_trigraphs
) = 1;
1646 else if (!strcmp (argv
[i
], "-Wcomment"))
1647 CPP_OPTION (pfile
, warn_comments
) = 1;
1648 else if (!strcmp (argv
[i
], "-Wcomments"))
1649 CPP_OPTION (pfile
, warn_comments
) = 1;
1650 else if (!strcmp (argv
[i
], "-Wundef"))
1651 CPP_OPTION (pfile
, warn_undef
) = 1;
1652 else if (!strcmp (argv
[i
], "-Wimport"))
1653 CPP_OPTION (pfile
, warn_import
) = 1;
1654 else if (!strcmp (argv
[i
], "-Wpaste"))
1655 CPP_OPTION (pfile
, warn_paste
) = 1;
1656 else if (!strcmp (argv
[i
], "-Werror"))
1657 CPP_OPTION (pfile
, warnings_are_errors
) = 1;
1658 else if (!strcmp (argv
[i
], "-Wno-traditional"))
1659 CPP_OPTION (pfile
, warn_traditional
) = 0;
1660 else if (!strcmp (argv
[i
], "-Wno-trigraphs"))
1661 CPP_OPTION (pfile
, warn_trigraphs
) = 0;
1662 else if (!strcmp (argv
[i
], "-Wno-comment"))
1663 CPP_OPTION (pfile
, warn_comments
) = 0;
1664 else if (!strcmp (argv
[i
], "-Wno-comments"))
1665 CPP_OPTION (pfile
, warn_comments
) = 0;
1666 else if (!strcmp (argv
[i
], "-Wno-undef"))
1667 CPP_OPTION (pfile
, warn_undef
) = 0;
1668 else if (!strcmp (argv
[i
], "-Wno-import"))
1669 CPP_OPTION (pfile
, warn_import
) = 0;
1670 else if (!strcmp (argv
[i
], "-Wno-paste"))
1671 CPP_OPTION (pfile
, warn_paste
) = 0;
1672 else if (!strcmp (argv
[i
], "-Wno-error"))
1673 CPP_OPTION (pfile
, warnings_are_errors
) = 0;
1682 opt_comp (const void *p1
, const void *p2
)
1684 return strcmp (((struct cl_option
*)p1
)->opt_text
,
1685 ((struct cl_option
*)p2
)->opt_text
);
1689 /* Handle command-line options in (argc, argv).
1690 Can be called multiple times, to handle multiple sets of options.
1691 Returns if an unrecognized option is seen.
1692 Returns number of strings consumed. */
1694 cpp_handle_options (pfile
, argc
, argv
)
1700 int strings_processed
;
1702 for (i
= 0; i
< argc
; i
+= strings_processed
)
1704 strings_processed
= cpp_handle_option (pfile
, argc
- i
, argv
+ i
);
1705 if (strings_processed
== 0)
1714 fprintf (stderr
, _("Usage: %s [switches] input output\n"), progname
);
1715 /* To keep the lines from getting too long for some compilers, limit
1716 to about 500 characters (6 lines) per chunk. */
1719 -include <file> Include the contents of <file> before other files\n\
1720 -imacros <file> Accept definition of macros in <file>\n\
1721 -iprefix <path> Specify <path> as a prefix for next two options\n\
1722 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1723 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1724 -isystem <dir> Add <dir> to the start of the system include path\n\
1727 -idirafter <dir> Add <dir> to the end of the system include path\n\
1728 -I <dir> Add <dir> to the end of the main include path\n\
1729 -I- Fine-grained include path control; see info docs\n\
1730 -nostdinc Do not search system include directories\n\
1731 (dirs specified with -isystem will still be used)\n\
1732 -nostdinc++ Do not search system include directories for C++\n\
1733 -o <file> Put output into <file>\n\
1736 -pedantic Issue all warnings demanded by strict ISO C\n\
1737 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1738 -trigraphs Support ISO C trigraphs\n\
1739 -lang-c Assume that the input sources are in C\n\
1740 -lang-c89 Assume that the input sources are in C89\n\
1743 -lang-c++ Assume that the input sources are in C++\n\
1744 -lang-objc Assume that the input sources are in ObjectiveC\n\
1745 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1746 -lang-asm Assume that the input sources are in assembler\n\
1749 -std=<std name> Specify the conformance standard; one of:\n\
1750 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1751 iso9899:199409, iso9899:1999\n\
1752 -+ Allow parsing of C++ style features\n\
1753 -w Inhibit warning messages\n\
1754 -Wtrigraphs Warn if trigraphs are encountered\n\
1755 -Wno-trigraphs Do not warn about trigraphs\n\
1756 -Wcomment{s} Warn if one comment starts inside another\n\
1759 -Wno-comment{s} Do not warn about comments\n\
1760 -Wtraditional Warn about features not present in traditional C\n\
1761 -Wno-traditional Do not warn about traditional C\n\
1762 -Wundef Warn if an undefined macro is used by #if\n\
1763 -Wno-undef Do not warn about testing undefined macros\n\
1764 -Wimport Warn about the use of the #import directive\n\
1767 -Wno-import Do not warn about the use of #import\n\
1768 -Werror Treat all warnings as errors\n\
1769 -Wno-error Do not treat warnings as errors\n\
1770 -Wall Enable all preprocessor warnings\n\
1771 -M Generate make dependencies\n\
1772 -MM As -M, but ignore system header files\n\
1775 -MD As -M, but put output in a .d file\n\
1776 -MMD As -MD, but ignore system header files\n\
1777 -MG Treat missing header file as generated files\n\
1778 -g3 Include #define and #undef directives in the output\n\
1779 -D<macro> Define a <macro> with string '1' as its value\n\
1780 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1783 -A<question> (<answer>) Assert the <answer> to <question>\n\
1784 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1785 -U<macro> Undefine <macro> \n\
1786 -v Display the version number\n\
1787 -H Print the name of header files as they are used\n\
1788 -C Do not discard comments\n\
1791 -dM Display a list of macro definitions active at end\n\
1792 -dD Preserve macro definitions in output\n\
1793 -dN As -dD except that only the names are preserved\n\
1794 -dI Include #include directives in the output\n\
1795 -ftabstop=<number> Distance between tab stops for column reporting\n\
1796 -P Do not generate #line directives\n\
1797 -$ Do not allow '$' in identifiers\n\
1800 -remap Remap file names when including files.\n\
1801 --version Display version information\n\
1802 -h or --help Display this information\n\