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. */
34 /* Predefined symbols, built-in macros, and the default include path. */
36 #ifndef GET_ENV_PATH_LIST
37 #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
40 /* Windows does not natively support inodes, and neither does MSDOS.
41 Cygwin's emulation can generate non-unique inodes, so don't use it.
42 VMS has non-numeric inodes. */
44 #define INO_T_EQ(a, b) (!memcmp (&(a), &(b), sizeof (a)))
45 #elif (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
46 #define INO_T_EQ(a, b) 0
48 #define INO_T_EQ(a, b) ((a) == (b))
51 #ifndef STANDARD_INCLUDE_DIR
52 #define STANDARD_INCLUDE_DIR "/usr/include"
55 /* We let tm.h override the types used here, to handle trivial differences
56 such as the choice of unsigned int or long unsigned int for size_t.
57 When machines start needing nontrivial differences in the size type,
58 it would be best to do something here to figure out automatically
59 from other information what type to use. */
61 /* The string value for __SIZE_TYPE__. */
64 #define SIZE_TYPE "long unsigned int"
67 /* The string value for __PTRDIFF_TYPE__. */
70 #define PTRDIFF_TYPE "long int"
73 /* The string value for __WCHAR_TYPE__. */
76 #define WCHAR_TYPE "int"
79 /* The string value for __USER_LABEL_PREFIX__ */
81 #ifndef USER_LABEL_PREFIX
82 #define USER_LABEL_PREFIX ""
85 /* The string value for __REGISTER_PREFIX__ */
87 #ifndef REGISTER_PREFIX
88 #define REGISTER_PREFIX ""
91 /* This is the default list of directories to search for include files.
92 It may be overridden by the various -I and -ixxx options.
94 #include "file" looks in the same directory as the current file,
96 #include <file> just looks in this list.
98 All these directories are treated as `system' include directories
99 (they are not subject to pedantic warnings in some cases). */
101 struct default_include
103 const char *fname
; /* The name of the directory. */
104 const char *component
; /* The component containing the directory
105 (see update_path in prefix.c) */
106 int cplusplus
; /* Only look here if we're compiling C++. */
107 int cxx_aware
; /* Includes in this directory don't need to
108 be wrapped in extern "C" when compiling
112 #ifndef STANDARD_INCLUDE_COMPONENT
113 #define STANDARD_INCLUDE_COMPONENT 0
117 #undef LOCAL_INCLUDE_DIR
118 #undef SYSTEM_INCLUDE_DIR
119 #undef STANDARD_INCLUDE_DIR
121 #undef CROSS_INCLUDE_DIR
124 static const struct default_include include_defaults_array
[]
125 #ifdef INCLUDE_DEFAULTS
129 #ifdef GPLUSPLUS_INCLUDE_DIR
130 /* Pick up GNU C++ specific include files. */
131 { GPLUSPLUS_INCLUDE_DIR
, "G++", 1, 1 },
133 #ifdef LOCAL_INCLUDE_DIR
134 /* /usr/local/include comes before the fixincluded header files. */
135 { LOCAL_INCLUDE_DIR
, 0, 0, 1 },
137 #ifdef GCC_INCLUDE_DIR
138 /* This is the dir for fixincludes and for gcc's private headers. */
139 { GCC_INCLUDE_DIR
, "GCC", 0, 0 },
141 #ifdef CROSS_INCLUDE_DIR
142 /* One place the target system's headers might be. */
143 { CROSS_INCLUDE_DIR
, "GCC", 0, 0 },
145 #ifdef TOOL_INCLUDE_DIR
146 /* Another place the target system's headers might be. */
147 { TOOL_INCLUDE_DIR
, "BINUTILS", 0, 1 },
149 #ifdef SYSTEM_INCLUDE_DIR
150 /* Some systems have an extra dir of include files. */
151 { SYSTEM_INCLUDE_DIR
, 0, 0, 0 },
153 #ifdef STANDARD_INCLUDE_DIR
154 /* /usr/include comes dead last. */
155 { STANDARD_INCLUDE_DIR
, STANDARD_INCLUDE_COMPONENT
, 0, 0 },
159 #endif /* no INCLUDE_DEFAULTS */
161 /* Internal structures and prototypes. */
163 /* A `struct pending_option' remembers one -D, -A, -U, -include, or -imacros
164 switch. There are four lists: one for -D and -U, one for -A, one
165 for -include, one for -imacros. `undef' is set for -U, clear for
166 -D, ignored for the others.
167 (Future: add an equivalent of -U for -A) */
169 typedef void (* cl_directive_handler
) PARAMS ((cpp_reader
*, const char *));
170 struct pending_option
172 struct pending_option
*next
;
174 cl_directive_handler handler
;
177 /* The `pending' structure accumulates all the options that are not
178 actually processed until we hit cpp_start_read. It consists of
179 several lists, one for each type of option. We keep both head and
180 tail pointers for quick insertion. */
183 struct pending_option
*directive_head
, *directive_tail
;
185 struct file_name_list
*quote_head
, *quote_tail
;
186 struct file_name_list
*brack_head
, *brack_tail
;
187 struct file_name_list
*systm_head
, *systm_tail
;
188 struct file_name_list
*after_head
, *after_tail
;
190 struct pending_option
*imacros_head
, *imacros_tail
;
191 struct pending_option
*include_head
, *include_tail
;
195 #define APPEND(pend, list, elt) \
196 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
197 else (pend)->list##_tail->next = (elt); \
198 (pend)->list##_tail = (elt); \
201 #define APPEND(pend, list, elt) \
202 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
203 else (pend)->list/**/_tail->next = (elt); \
204 (pend)->list/**/_tail = (elt); \
208 static void print_help
PARAMS ((void));
209 static void path_include
PARAMS ((cpp_reader
*,
210 struct cpp_pending
*,
212 static void initialize_builtins
PARAMS ((cpp_reader
*));
213 static void append_include_chain
PARAMS ((cpp_reader
*,
214 struct cpp_pending
*,
216 static void merge_include_chains
PARAMS ((cpp_reader
*));
218 static void dump_special_to_buffer
PARAMS ((cpp_reader
*, const char *));
219 static void initialize_dependency_output
PARAMS ((cpp_reader
*));
220 static void initialize_standard_includes
PARAMS ((cpp_reader
*));
221 static void new_pending_directive
PARAMS ((struct cpp_pending
*,
223 cl_directive_handler
));
225 static int opt_comp
PARAMS ((const void *, const void *));
227 static int parse_option
PARAMS ((const char *));
228 static int handle_option
PARAMS ((cpp_reader
*, int, char **));
230 /* Fourth argument to append_include_chain: chain to use */
231 enum { QUOTE
= 0, BRACKET
, SYSTEM
, AFTER
};
233 /* If we have designated initializers (GCC >2.7, or C99) this table
234 can be initialized, constant data. Otherwise, it has to be filled
237 #if (GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)
238 #define init_IStable() /* nothing */
239 #define ISTABLE const unsigned char _cpp_IStable[256] = {
241 #define s(p, v) [p] = v,
243 #define ISTABLE unsigned char _cpp_IStable[256] = { 0 }; \
244 static void init_IStable PARAMS ((void)) { \
245 unsigned char *x = _cpp_IStable;
247 #define s(p, v) x[p] = v;
250 #define A(x) s(x, ISidnum|ISidstart)
251 #define N(x) s(x, ISidnum|ISnumstart)
252 #define H(x) s(x, IShspace|ISspace)
253 #define S(x) s(x, ISspace)
258 A('a') A('b') A('c') A('d') A('e') A('f') A('g') A('h') A('i')
259 A('j') A('k') A('l') A('m') A('n') A('o') A('p') A('q') A('r')
260 A('s') A('t') A('u') A('v') A('w') A('x') A('y') A('z')
262 A('A') A('B') A('C') A('D') A('E') A('F') A('G') A('H') A('I')
263 A('J') A('K') A('L') A('M') A('N') A('O') A('P') A('Q') A('R')
264 A('S') A('T') A('U') A('V') A('W') A('X') A('Y') A('Z')
266 N('1') N('2') N('3') N('4') N('5') N('6') N('7') N('8') N('9') N('0')
268 H('\0') H(' ') H('\t') H('\v') H('\f')
281 /* Given a colon-separated list of file names PATH,
282 add all the names to the search path for include files. */
285 path_include (pfile
, pend
, list
, path
)
287 struct cpp_pending
*pend
;
297 /* Find the end of this name. */
299 while (*q
!= 0 && *q
!= PATH_SEPARATOR
) q
++;
302 /* An empty name in the path stands for the current directory. */
303 name
= (char *) xmalloc (2);
309 /* Otherwise use the directory that is named. */
310 name
= (char *) xmalloc (q
- p
+ 1);
311 memcpy (name
, p
, q
- p
);
315 append_include_chain (pfile
, pend
, name
, path
, 0);
317 /* Advance past this name. */
325 /* Append DIR to include path PATH. DIR must be permanently allocated
328 append_include_chain (pfile
, pend
, dir
, path
, cxx_aware
)
330 struct cpp_pending
*pend
;
335 struct file_name_list
*new;
339 _cpp_simplify_pathname (dir
);
342 /* Dirs that don't exist are silently ignored. */
344 cpp_notice_from_errno (pfile
, dir
);
345 else if (CPP_OPTION (pfile
, verbose
))
346 fprintf (stderr
, _("ignoring nonexistent directory `%s'\n"), dir
);
350 if (!S_ISDIR (st
.st_mode
))
352 cpp_notice (pfile
, "%s: Not a directory", dir
);
357 if (len
> pfile
->max_include_len
)
358 pfile
->max_include_len
= len
;
360 new = (struct file_name_list
*) xmalloc (sizeof (struct file_name_list
));
363 new->ino
= st
.st_ino
;
364 new->dev
= st
.st_dev
;
366 new->sysp
= cxx_aware
? 1 : 2;
369 new->name_map
= NULL
;
375 case QUOTE
: APPEND (pend
, quote
, new); break;
376 case BRACKET
: APPEND (pend
, brack
, new); break;
377 case SYSTEM
: APPEND (pend
, systm
, new); break;
378 case AFTER
: APPEND (pend
, after
, new); break;
382 /* Merge the four include chains together in the order quote, bracket,
383 system, after. Remove duplicate dirs (as determined by
384 INO_T_EQ()). The system_include and after_include chains are never
385 referred to again after this function; all access is through the
386 bracket_include path.
388 For the future: Check if the directory is empty (but
389 how?) and possibly preload the include hash. */
392 merge_include_chains (pfile
)
395 struct file_name_list
*prev
, *cur
, *other
;
396 struct file_name_list
*quote
, *brack
, *systm
, *after
;
397 struct file_name_list
*qtail
, *btail
, *stail
, *atail
;
399 struct cpp_pending
*pend
= CPP_OPTION (pfile
, pending
);
401 qtail
= pend
->quote_tail
;
402 btail
= pend
->brack_tail
;
403 stail
= pend
->systm_tail
;
404 atail
= pend
->after_tail
;
406 quote
= pend
->quote_head
;
407 brack
= pend
->brack_head
;
408 systm
= pend
->systm_head
;
409 after
= pend
->after_head
;
411 /* Paste together bracket, system, and after include chains. */
421 /* This is a bit tricky.
422 First we drop dupes from the quote-include list.
423 Then we drop dupes from the bracket-include list.
424 Finally, if qtail and brack are the same directory,
427 We can't just merge the lists and then uniquify them because
428 then we may lose directories from the <> search path that should
429 be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
430 safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
431 -Ibar -I- -Ifoo -Iquux.
433 Note that this algorithm is quadratic in the number of -I switches,
434 which is acceptable since there aren't usually that many of them. */
436 for (cur
= quote
, prev
= NULL
; cur
; cur
= cur
->next
)
438 for (other
= quote
; other
!= cur
; other
= other
->next
)
439 if (INO_T_EQ (cur
->ino
, other
->ino
)
440 && cur
->dev
== other
->dev
)
442 if (CPP_OPTION (pfile
, verbose
))
443 fprintf (stderr
, _("ignoring duplicate directory `%s'\n"),
446 prev
->next
= cur
->next
;
456 for (cur
= brack
; cur
; cur
= cur
->next
)
458 for (other
= brack
; other
!= cur
; other
= other
->next
)
459 if (INO_T_EQ (cur
->ino
, other
->ino
)
460 && cur
->dev
== other
->dev
)
462 if (CPP_OPTION (pfile
, verbose
))
463 fprintf (stderr
, _("ignoring duplicate directory `%s'\n"),
466 prev
->next
= cur
->next
;
477 if (INO_T_EQ (qtail
->ino
, brack
->ino
) && qtail
->dev
== brack
->dev
)
481 if (CPP_OPTION (pfile
, verbose
))
482 fprintf (stderr
, _("ignoring duplicate directory `%s'\n"),
492 while (cur
->next
!= qtail
)
495 if (CPP_OPTION (pfile
, verbose
))
496 fprintf (stderr
, _("ignoring duplicate directory `%s'\n"),
509 CPP_OPTION (pfile
, quote_include
) = quote
;
510 CPP_OPTION (pfile
, bracket_include
) = brack
;
514 /* Write out a #define command for the special named MACRO_NAME
515 to PFILE's token_buffer. */
518 dump_special_to_buffer (pfile
, macro_name
)
520 const char *macro_name
;
522 static const char define_directive
[] = "#define ";
523 int macro_name_length
= strlen (macro_name
);
524 _cpp_output_line_command (pfile
, same_file
);
525 CPP_RESERVE (pfile
, sizeof(define_directive
) + macro_name_length
);
526 CPP_PUTS_Q (pfile
, define_directive
, sizeof(define_directive
)-1);
527 CPP_PUTS_Q (pfile
, macro_name
, macro_name_length
);
528 CPP_PUTC_Q (pfile
, ' ');
529 cpp_expand_to_buffer (pfile
, macro_name
, macro_name_length
);
530 CPP_PUTC (pfile
, '\n');
533 /* Initialize a cpp_reader structure. */
535 cpp_reader_init (pfile
)
538 memset ((char *) pfile
, 0, sizeof (cpp_reader
));
540 pfile
->token_buffer_size
= 200;
541 pfile
->token_buffer
= (U_CHAR
*) xmalloc (pfile
->token_buffer_size
);
542 CPP_SET_WRITTEN (pfile
, 0);
544 CPP_OPTION (pfile
, dollars_in_ident
) = 1;
545 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
546 CPP_OPTION (pfile
, warn_import
) = 1;
547 CPP_OPTION (pfile
, discard_comments
) = 1;
548 CPP_OPTION (pfile
, show_column
) = 1;
550 CPP_OPTION (pfile
, pending
) =
551 (struct cpp_pending
*) xcalloc (1, sizeof (struct cpp_pending
));
553 _cpp_init_macro_hash (pfile
);
554 _cpp_init_include_hash (pfile
);
557 /* Free resources used by PFILE.
558 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
563 while (CPP_BUFFER (pfile
) != NULL
)
564 cpp_pop_buffer (pfile
);
566 if (pfile
->token_buffer
)
568 free (pfile
->token_buffer
);
569 pfile
->token_buffer
= NULL
;
572 if (pfile
->input_buffer
)
574 free (pfile
->input_buffer
);
575 pfile
->input_buffer
= NULL
;
576 pfile
->input_buffer_len
= 0;
580 deps_free (pfile
->deps
);
582 htab_delete (pfile
->hashtab
);
583 htab_delete (pfile
->all_include_files
);
587 /* This structure defines one built-in macro. A node of type TYPE will
588 be entered in the macro hash table under the name NAME, with value
589 VALUE (if any). FLAGS tweaks the behavior a little:
590 DUMP write debug info for this macro
591 STDC define only if not -traditional
592 ULP value is the global user_label_prefix (which can't be
593 put directly into the table).
601 unsigned short flags
;
608 static const struct builtin builtin_array
[] =
610 { "__TIME__", 0, T_TIME
, DUMP
},
611 { "__DATE__", 0, T_DATE
, DUMP
},
612 { "__FILE__", 0, T_FILE
, 0 },
613 { "__BASE_FILE__", 0, T_BASE_FILE
, 0 },
614 { "__LINE__", 0, T_SPECLINE
, 0 },
615 { "__INCLUDE_LEVEL__", 0, T_INCLUDE_LEVEL
, 0 },
616 { "__VERSION__", 0, T_VERSION
, DUMP
|VERS
},
617 { "__STDC__", 0, T_STDC
, DUMP
|STDC
},
619 { "__USER_LABEL_PREFIX__", 0, T_CONST
, ULP
},
620 { "__REGISTER_PREFIX__", REGISTER_PREFIX
, T_CONST
, 0 },
621 { "__HAVE_BUILTIN_SETJMP__", "1", T_CONST
, 0 },
622 #ifndef NO_BUILTIN_SIZE_TYPE
623 { "__SIZE_TYPE__", SIZE_TYPE
, T_CONST
, DUMP
},
625 #ifndef NO_BUILTIN_PTRDIFF_TYPE
626 { "__PTRDIFF_TYPE__", PTRDIFF_TYPE
, T_CONST
, DUMP
},
628 #ifndef NO_BUILTIN_WCHAR_TYPE
629 { "__WCHAR_TYPE__", WCHAR_TYPE
, T_CONST
, DUMP
},
634 /* Subroutine of cpp_start_read; reads the builtins table above and
635 enters the macros into the hash table. */
637 initialize_builtins (pfile
)
641 const struct builtin
*b
;
644 for(b
= builtin_array
; b
->name
; b
++)
646 if ((b
->flags
& STDC
) && CPP_TRADITIONAL (pfile
))
650 val
= user_label_prefix
;
651 else if (b
->flags
& VERS
)
652 val
= version_string
;
656 len
= strlen (b
->name
);
657 hp
= _cpp_make_hashnode (b
->name
, len
, b
->type
,
658 _cpp_calc_hash (b
->name
, len
));
659 hp
->value
.cpval
= val
;
660 *(htab_find_slot (pfile
->hashtab
, (void *)hp
, 1)) = hp
;
662 if ((b
->flags
& DUMP
) && CPP_OPTION (pfile
, debug_output
))
663 dump_special_to_buffer (pfile
, b
->name
);
672 /* Another subroutine of cpp_start_read. This one sets up to do
673 dependency-file output. */
675 initialize_dependency_output (pfile
)
678 char *spec
, *s
, *output_file
;
680 /* Either of two environment variables can specify output of deps.
681 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
682 where OUTPUT_FILE is the file to write deps info to
683 and DEPS_TARGET is the target to mention in the deps. */
685 if (CPP_OPTION (pfile
, print_deps
) == 0)
687 spec
= getenv ("DEPENDENCIES_OUTPUT");
689 CPP_OPTION (pfile
, print_deps
) = 1;
692 spec
= getenv ("SUNPRO_DEPENDENCIES");
694 CPP_OPTION (pfile
, print_deps
) = 2;
699 /* Find the space before the DEPS_TARGET, if there is one. */
700 s
= strchr (spec
, ' ');
703 CPP_OPTION (pfile
, deps_target
) = s
+ 1;
704 output_file
= (char *) xmalloc (s
- spec
+ 1);
705 memcpy (output_file
, spec
, s
- spec
);
706 output_file
[s
- spec
] = 0;
710 CPP_OPTION (pfile
, deps_target
) = 0;
714 CPP_OPTION (pfile
, deps_file
) = output_file
;
715 CPP_OPTION (pfile
, print_deps_append
) = 1;
718 pfile
->deps
= deps_init ();
720 /* Print the expected object file name as the target of this Make-rule. */
721 if (CPP_OPTION (pfile
, deps_target
))
722 deps_add_target (pfile
->deps
, CPP_OPTION (pfile
, deps_target
));
723 else if (*CPP_OPTION (pfile
, in_fname
) == 0)
724 deps_add_target (pfile
->deps
, "-");
726 deps_calc_target (pfile
->deps
, CPP_OPTION (pfile
, in_fname
));
728 if (CPP_OPTION (pfile
, in_fname
))
729 deps_add_dep (pfile
->deps
, CPP_OPTION (pfile
, in_fname
));
732 /* And another subroutine. This one sets up the standard include path. */
734 initialize_standard_includes (pfile
)
738 const struct default_include
*p
;
739 const char *specd_prefix
= CPP_OPTION (pfile
, include_prefix
);
741 /* Several environment variables may add to the include search path.
742 CPATH specifies an additional list of directories to be searched
743 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
744 etc. specify an additional list of directories to be searched as
745 if specified with -isystem, for the language indicated. */
747 GET_ENV_PATH_LIST (path
, "CPATH");
748 if (path
!= 0 && *path
!= 0)
749 path_include (pfile
, CPP_OPTION (pfile
, pending
), path
, BRACKET
);
751 switch ((CPP_OPTION (pfile
, objc
) << 1) + CPP_OPTION (pfile
, cplusplus
))
754 GET_ENV_PATH_LIST (path
, "C_INCLUDE_PATH");
757 GET_ENV_PATH_LIST (path
, "CPLUS_INCLUDE_PATH");
760 GET_ENV_PATH_LIST (path
, "OBJC_INCLUDE_PATH");
763 GET_ENV_PATH_LIST (path
, "OBJCPLUS_INCLUDE_PATH");
766 if (path
!= 0 && *path
!= 0)
767 path_include (pfile
, CPP_OPTION (pfile
, pending
), path
, SYSTEM
);
769 /* Search "translated" versions of GNU directories.
770 These have /usr/local/lib/gcc... replaced by specd_prefix. */
771 if (specd_prefix
!= 0)
773 char *default_prefix
= alloca (sizeof GCC_INCLUDE_DIR
- 7);
774 /* Remove the `include' from /usr/local/lib/gcc.../include.
775 GCC_INCLUDE_DIR will always end in /include. */
776 int default_len
= sizeof GCC_INCLUDE_DIR
- 8;
777 int specd_len
= strlen (specd_prefix
);
779 memcpy (default_prefix
, GCC_INCLUDE_DIR
, default_len
);
780 default_prefix
[default_len
] = '\0';
782 for (p
= include_defaults_array
; p
->fname
; p
++)
784 /* Some standard dirs are only for C++. */
786 || (CPP_OPTION (pfile
, cplusplus
)
787 && !CPP_OPTION (pfile
, no_standard_cplusplus_includes
)))
789 /* Does this dir start with the prefix? */
790 if (!strncmp (p
->fname
, default_prefix
, default_len
))
792 /* Yes; change prefix and add to search list. */
793 int flen
= strlen (p
->fname
);
794 int this_len
= specd_len
+ flen
- default_len
;
795 char *str
= (char *) xmalloc (this_len
+ 1);
796 memcpy (str
, specd_prefix
, specd_len
);
797 memcpy (str
+ specd_len
,
798 p
->fname
+ default_len
,
799 flen
- default_len
+ 1);
801 append_include_chain (pfile
, CPP_OPTION (pfile
, pending
),
802 str
, SYSTEM
, p
->cxx_aware
);
808 /* Search ordinary names for GNU include directories. */
809 for (p
= include_defaults_array
; p
->fname
; p
++)
811 /* Some standard dirs are only for C++. */
813 || (CPP_OPTION (pfile
, cplusplus
)
814 && !CPP_OPTION (pfile
, no_standard_cplusplus_includes
)))
816 /* XXX Potential memory leak! */
817 char *str
= xstrdup (update_path (p
->fname
, p
->component
));
818 append_include_chain (pfile
, CPP_OPTION (pfile
, pending
),
819 str
, SYSTEM
, p
->cxx_aware
);
824 /* This is called after options have been processed.
825 * Check options for consistency, and setup for processing input
826 * from the file named FNAME. (Use standard input if FNAME==NULL.)
827 * Return 1 on success, 0 on failure.
831 cpp_start_read (pfile
, fname
)
835 struct pending_option
*p
, *q
;
837 /* -MG doesn't select the form of output and must be specified with one of
838 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
839 inhibit compilation. */
840 if (CPP_OPTION (pfile
, print_deps_missing_files
)
841 && (CPP_OPTION (pfile
, print_deps
) == 0
842 || !CPP_OPTION (pfile
, no_output
)))
844 cpp_fatal (pfile
, "-MG must be specified with one of -M or -MM");
848 /* Chill should not be used with -trigraphs. */
849 if (CPP_OPTION (pfile
, chill
) && CPP_OPTION (pfile
, trigraphs
))
851 cpp_warning (pfile
, "-lang-chill and -trigraphs are mutually exclusive");
852 CPP_OPTION (pfile
, trigraphs
) = 0;
855 /* -Wtraditional is not useful in C++ mode. */
856 if (CPP_OPTION (pfile
, cplusplus
))
857 CPP_OPTION (pfile
, warn_traditional
) = 0;
859 /* Set this if it hasn't been set already. */
860 if (user_label_prefix
== NULL
)
861 user_label_prefix
= USER_LABEL_PREFIX
;
863 /* Don't bother trying to do macro expansion if we've already done
865 if (CPP_OPTION (pfile
, preprocessed
))
866 pfile
->no_macro_expand
++;
868 /* Set up the IStable. This doesn't do anything if we were compiled
869 with a compiler that supports C99 designated initializers. */
872 /* Set up the tables used by read_and_prescan. */
873 _cpp_init_input_buffer (pfile
);
875 /* Set up the include search path now. */
876 if (! CPP_OPTION (pfile
, no_standard_includes
))
877 initialize_standard_includes (pfile
);
879 merge_include_chains (pfile
);
881 /* With -v, print the list of dirs to search. */
882 if (CPP_OPTION (pfile
, verbose
))
884 struct file_name_list
*l
;
885 fprintf (stderr
, _("#include \"...\" search starts here:\n"));
886 for (l
= CPP_OPTION (pfile
, quote_include
); l
; l
= l
->next
)
888 if (l
== CPP_OPTION (pfile
, bracket_include
))
889 fprintf (stderr
, _("#include <...> search starts here:\n"));
890 fprintf (stderr
, " %s\n", l
->name
);
892 fprintf (stderr
, _("End of search list.\n"));
895 /* Open the main input file. This must be done early, so we have a
896 buffer to stand on. */
897 if (CPP_OPTION (pfile
, in_fname
) == NULL
898 || *CPP_OPTION (pfile
, in_fname
) == 0)
900 CPP_OPTION (pfile
, in_fname
) = fname
;
901 if (CPP_OPTION (pfile
, in_fname
) == NULL
)
902 CPP_OPTION (pfile
, in_fname
) = "";
904 if (CPP_OPTION (pfile
, out_fname
) == NULL
)
905 CPP_OPTION (pfile
, out_fname
) = "";
907 if (!cpp_read_file (pfile
, fname
))
910 initialize_dependency_output (pfile
);
912 /* -D and friends may produce output, which should be identified
915 CPP_BUFFER (pfile
)->lineno
= 0;
917 /* Install __LINE__, etc. */
918 initialize_builtins (pfile
);
920 /* Do -U's, -D's and -A's in the order they were seen. */
921 p
= CPP_OPTION (pfile
, pending
)->directive_head
;
924 (*p
->handler
) (pfile
, p
->arg
);
930 pfile
->done_initializing
= 1;
931 CPP_BUFFER (pfile
)->lineno
= 1;
933 if (CPP_OPTION (pfile
, preprocessed
))
934 /* If we've already processed this code, we want to trust the #line
935 directives in the input. But we still need to update our line
936 counter accordingly. */
937 pfile
->lineno
= CPP_BUFFER (pfile
)->lineno
;
939 _cpp_output_line_command (pfile
, same_file
);
940 pfile
->only_seen_white
= 2;
942 /* The -imacros files can be scanned now, but the -include files
943 have to be pushed onto the include stack and processed later,
944 in the main loop calling cpp_get_token. */
946 CPP_OPTION (pfile
, no_output
)++;
947 p
= CPP_OPTION (pfile
, pending
)->imacros_head
;
950 if (cpp_read_file (pfile
, p
->arg
))
951 cpp_scan_buffer (pfile
);
957 CPP_OPTION (pfile
, no_output
)--;
959 p
= CPP_OPTION (pfile
, pending
)->include_head
;
962 if (cpp_read_file (pfile
, p
->arg
))
963 _cpp_output_line_command (pfile
, enter_file
);
970 free (CPP_OPTION (pfile
, pending
));
971 CPP_OPTION (pfile
, pending
) = NULL
;
976 /* This is called at the end of preprocessing. It pops the
977 last buffer and writes dependency output. It should also
978 clear macro definitions, such that you could call cpp_start_read
979 with a new filename to restart processing. */
984 if (CPP_PREV_BUFFER (CPP_BUFFER (pfile
)))
985 cpp_ice (pfile
, "buffers still stacked in cpp_finish");
986 while (CPP_BUFFER (pfile
))
987 cpp_pop_buffer (pfile
);
989 /* Don't write the deps file if preprocessing has failed. */
990 if (CPP_OPTION (pfile
, print_deps
) && pfile
->errors
== 0)
992 /* Stream on which to print the dependency information. */
993 FILE *deps_stream
= 0;
994 const char *deps_mode
995 = CPP_OPTION (pfile
, print_deps_append
) ? "a" : "w";
996 if (CPP_OPTION (pfile
, deps_file
) == 0)
997 deps_stream
= stdout
;
1000 deps_stream
= fopen (CPP_OPTION (pfile
, deps_file
), deps_mode
);
1001 if (deps_stream
== 0)
1002 cpp_notice_from_errno (pfile
, CPP_OPTION (pfile
, deps_file
));
1006 deps_write (pfile
->deps
, deps_stream
, 72);
1007 if (CPP_OPTION (pfile
, deps_file
))
1009 if (ferror (deps_stream
) || fclose (deps_stream
) != 0)
1010 cpp_fatal (pfile
, "I/O error on output");
1015 if (CPP_OPTION (pfile
, dump_macros
) == dump_only
)
1016 _cpp_dump_macro_hash (pfile
);
1020 new_pending_directive (pend
, text
, handler
)
1021 struct cpp_pending
*pend
;
1023 cl_directive_handler handler
;
1025 struct pending_option
*o
= (struct pending_option
*)
1026 xmalloc (sizeof (struct pending_option
));
1030 o
->handler
= handler
;
1031 APPEND (pend
, directive
, o
);
1034 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1035 I.e. a const string initializer with parens around it. That is
1036 what N_("string") resolves to, so we make no_* be macros instead. */
1037 #define no_arg N_("Argument missing after %s")
1038 #define no_ass N_("Assertion missing after %s")
1039 #define no_dir N_("Directory name missing after %s")
1040 #define no_fil N_("File name missing after %s")
1041 #define no_mac N_("Macro name missing after %s")
1042 #define no_pth N_("Path name missing after %s")
1044 /* This is the list of all command line options, with the leading
1045 "-" removed. It must be sorted in ASCII collating order. */
1046 #define COMMAND_LINE_OPTIONS \
1047 DEF_OPT("", 0, OPT_stdin_stdout) \
1048 DEF_OPT("$", 0, OPT_dollar) \
1049 DEF_OPT("+", 0, OPT_plus) \
1050 DEF_OPT("-help", 0, OPT__help) \
1051 DEF_OPT("-version", 0, OPT__version) \
1052 DEF_OPT("A", no_ass, OPT_A) \
1053 DEF_OPT("C", 0, OPT_C) \
1054 DEF_OPT("D", no_mac, OPT_D) \
1055 DEF_OPT("H", 0, OPT_H) \
1056 DEF_OPT("I", no_dir, OPT_I) \
1057 DEF_OPT("M", 0, OPT_M) \
1058 DEF_OPT("MD", no_fil, OPT_MD) \
1059 DEF_OPT("MG", 0, OPT_MG) \
1060 DEF_OPT("MM", 0, OPT_MM) \
1061 DEF_OPT("MMD", no_fil, OPT_MMD) \
1062 DEF_OPT("P", 0, OPT_P) \
1063 DEF_OPT("U", no_mac, OPT_U) \
1064 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1065 DEF_OPT("d", no_arg, OPT_d) \
1066 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1067 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1068 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1069 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1070 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1071 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1072 DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
1073 DEF_OPT("h", 0, OPT_h) \
1074 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1075 DEF_OPT("imacros", no_fil, OPT_imacros) \
1076 DEF_OPT("include", no_fil, OPT_include) \
1077 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1078 DEF_OPT("isystem", no_dir, OPT_isystem) \
1079 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1080 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1081 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1082 DEF_OPT("lang-c", 0, OPT_lang_c) \
1083 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1084 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1085 DEF_OPT("lang-chill", 0, OPT_lang_chill) \
1086 DEF_OPT("lang-fortran", 0, OPT_lang_fortran) \
1087 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1088 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1089 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1090 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1091 DEF_OPT("o", no_fil, OPT_o) \
1092 DEF_OPT("pedantic", 0, OPT_pedantic) \
1093 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1094 DEF_OPT("remap", 0, OPT_remap) \
1095 DEF_OPT("std=c89", 0, OPT_std_c89) \
1096 DEF_OPT("std=c99", 0, OPT_std_c99) \
1097 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1098 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1099 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1100 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1101 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1102 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1103 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1104 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1105 DEF_OPT("traditional", 0, OPT_traditional) \
1106 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1107 DEF_OPT("v", 0, OPT_v) \
1108 DEF_OPT("w", 0, OPT_w)
1110 #define DEF_OPT(text, msg, code) code,
1113 COMMAND_LINE_OPTIONS
1120 const char *opt_text
;
1123 enum opt_code opt_code
;
1126 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1128 static struct cl_option cl_options
[] =
1130 static const struct cl_option cl_options
[] =
1133 COMMAND_LINE_OPTIONS
1136 #undef COMMAND_LINE_OPTIONS
1138 /* Perform a binary search to find which, if any, option the given
1139 command-line matches. Returns its index in the option array,
1140 negative on failure. Complications arise since some options can be
1141 suffixed with an argument, and multiple complete matches can occur,
1142 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1143 accept options beginning with -g and -W that we do not recognise,
1144 but not to swallow any subsequent command line argument; these are
1145 handled as special cases in cpp_handle_option */
1147 parse_option (input
)
1150 unsigned int md
, mn
, mx
;
1161 opt_len
= cl_options
[md
].opt_len
;
1162 comp
= strncmp (input
, cl_options
[md
].opt_text
, opt_len
);
1170 if (input
[opt_len
] == '\0')
1172 /* We were passed more text. If the option takes an argument,
1173 we may match a later option or we may have been passed the
1174 argument. The longest possible option match succeeds.
1175 If the option takes no arguments we have not matched and
1176 continue the search (e.g. input="stdc++" match was "stdc") */
1178 if (cl_options
[md
].msg
)
1180 /* Scan forwards. If we get an exact match, return it.
1181 Otherwise, return the longest option-accepting match.
1182 This loops no more than twice with current options */
1184 for (; mn
< N_OPTS
; mn
++)
1186 opt_len
= cl_options
[mn
].opt_len
;
1187 if (strncmp (input
, cl_options
[mn
].opt_text
, opt_len
))
1189 if (input
[opt_len
] == '\0')
1191 if (cl_options
[mn
].msg
)
1202 /* Handle one command-line option in (argc, argv).
1203 Can be called multiple times, to handle multiple sets of options.
1204 Returns number of strings consumed. */
1207 handle_option (pfile
, argc
, argv
)
1214 if (argv
[i
][0] != '-')
1216 if (CPP_OPTION (pfile
, out_fname
) != NULL
)
1217 cpp_fatal (pfile
, "Too many arguments. Type %s --help for usage info",
1219 else if (CPP_OPTION (pfile
, in_fname
) != NULL
)
1220 CPP_OPTION (pfile
, out_fname
) = argv
[i
];
1222 CPP_OPTION (pfile
, in_fname
) = argv
[i
];
1226 enum opt_code opt_code
;
1228 const char *arg
= 0;
1231 opt_index
= parse_option (&argv
[i
][1]);
1235 opt_code
= cl_options
[opt_index
].opt_code
;
1236 if (cl_options
[opt_index
].msg
)
1238 arg
= &argv
[i
][cl_options
[opt_index
].opt_len
+ 1];
1240 /* Yuk. Special case for -g and -W as they must not swallow
1241 up any following argument. If this becomes common, add
1242 another field to the cl_options table */
1243 if (arg
[0] == '\0' && !(opt_code
== OPT_g
|| opt_code
== OPT_W
))
1248 cpp_fatal (pfile
, _(cl_options
[opt_index
].msg
), argv
[i
- 1]);
1256 case N_OPTS
: /* shut GCC up */
1258 case OPT_fleading_underscore
:
1259 user_label_prefix
= "_";
1261 case OPT_fno_leading_underscore
:
1262 user_label_prefix
= "";
1264 case OPT_fpreprocessed
:
1265 CPP_OPTION (pfile
, preprocessed
) = 1;
1267 case OPT_fno_preprocessed
:
1268 CPP_OPTION (pfile
, preprocessed
) = 0;
1270 case OPT_fshow_column
:
1271 CPP_OPTION (pfile
, show_column
) = 1;
1273 case OPT_fno_show_column
:
1274 CPP_OPTION (pfile
, show_column
) = 0;
1277 CPP_OPTION (pfile
, inhibit_warnings
) = 1;
1279 case OPT_g
: /* Silently ignore anything but -g3 */
1280 if (!strcmp(&argv
[i
][2], "3"))
1281 CPP_OPTION (pfile
, debug_output
) = 1;
1289 fprintf (stderr
, _("GNU CPP version %s (cpplib)\n"), version_string
);
1293 CPP_OPTION (pfile
, discard_comments
) = 0;
1296 CPP_OPTION (pfile
, no_line_commands
) = 1;
1298 case OPT_dollar
: /* Don't include $ in identifiers. */
1299 CPP_OPTION (pfile
, dollars_in_ident
) = 0;
1302 CPP_OPTION (pfile
, print_include_names
) = 1;
1305 new_pending_directive (CPP_OPTION (pfile
, pending
), arg
, cpp_define
);
1307 case OPT_pedantic_errors
:
1308 CPP_OPTION (pfile
, pedantic_errors
) = 1;
1311 CPP_OPTION (pfile
, pedantic
) = 1;
1313 case OPT_traditional
:
1314 CPP_OPTION (pfile
, traditional
) = 1;
1315 CPP_OPTION (pfile
, cplusplus_comments
) = 0;
1316 CPP_OPTION (pfile
, trigraphs
) = 0;
1317 CPP_OPTION (pfile
, warn_trigraphs
) = 0;
1320 CPP_OPTION (pfile
, trigraphs
) = 1;
1323 CPP_OPTION (pfile
, cplusplus
) = 1;
1324 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1327 CPP_OPTION (pfile
, remap
) = 1;
1330 CPP_OPTION (pfile
, include_prefix
) = arg
;
1331 CPP_OPTION (pfile
, include_prefix_len
) = strlen (arg
);
1334 CPP_OPTION (pfile
, cplusplus
) = 0;
1335 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1336 CPP_OPTION (pfile
, c89
) = 0;
1337 CPP_OPTION (pfile
, c99
) = 1;
1338 CPP_OPTION (pfile
, objc
) = 0;
1341 CPP_OPTION (pfile
, cplusplus
) = 0;
1342 CPP_OPTION (pfile
, cplusplus_comments
) = 0;
1343 CPP_OPTION (pfile
, c89
) = 1;
1344 CPP_OPTION (pfile
, c99
) = 0;
1345 CPP_OPTION (pfile
, objc
) = 0;
1346 CPP_OPTION (pfile
, trigraphs
) = 1;
1347 new_pending_directive (CPP_OPTION (pfile
, pending
),
1348 "__STRICT_ANSI__", cpp_define
);
1350 case OPT_lang_cplusplus
:
1351 CPP_OPTION (pfile
, cplusplus
) = 1;
1352 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1353 CPP_OPTION (pfile
, c89
) = 0;
1354 CPP_OPTION (pfile
, c99
) = 0;
1355 CPP_OPTION (pfile
, objc
) = 0;
1358 case OPT_lang_objcplusplus
:
1359 CPP_OPTION (pfile
, cplusplus
) = opt_code
== OPT_lang_objcplusplus
;
1360 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1361 CPP_OPTION (pfile
, c89
) = 0;
1362 CPP_OPTION (pfile
, c99
) = 0;
1363 CPP_OPTION (pfile
, objc
) = 1;
1366 CPP_OPTION (pfile
, lang_asm
) = 1;
1368 case OPT_lang_fortran
:
1369 CPP_OPTION (pfile
, lang_fortran
) = 1;
1370 CPP_OPTION (pfile
, cplusplus_comments
) = 0;
1372 case OPT_lang_chill
:
1373 CPP_OPTION (pfile
, objc
) = 0;
1374 CPP_OPTION (pfile
, cplusplus
) = 0;
1375 CPP_OPTION (pfile
, chill
) = 1;
1376 CPP_OPTION (pfile
, traditional
) = 1;
1379 /* -nostdinc causes no default include directories.
1380 You must specify all include-file directories with -I. */
1381 CPP_OPTION (pfile
, no_standard_includes
) = 1;
1383 case OPT_nostdincplusplus
:
1384 /* -nostdinc++ causes no default C++-specific include directories. */
1385 CPP_OPTION (pfile
, no_standard_cplusplus_includes
) = 1;
1388 CPP_OPTION (pfile
, cplusplus
) = 0;
1389 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1390 CPP_OPTION (pfile
, c89
) = 1;
1391 CPP_OPTION (pfile
, c99
) = 0;
1392 CPP_OPTION (pfile
, objc
) = 0;
1396 CPP_OPTION (pfile
, cplusplus
) = 0;
1397 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1398 CPP_OPTION (pfile
, c89
) = 0;
1399 CPP_OPTION (pfile
, c99
) = 1;
1400 CPP_OPTION (pfile
, objc
) = 0;
1401 new_pending_directive (CPP_OPTION (pfile
, pending
),
1402 "__STDC_VERSION__=199901L", cpp_define
);
1404 case OPT_std_iso9899_199409
:
1405 new_pending_directive (CPP_OPTION (pfile
, pending
),
1406 "__STDC_VERSION__=199409L", cpp_define
);
1408 case OPT_std_iso9899_1990
:
1410 CPP_OPTION (pfile
, cplusplus
) = 0;
1411 CPP_OPTION (pfile
, cplusplus_comments
) = 0;
1412 CPP_OPTION (pfile
, c89
) = 1;
1413 CPP_OPTION (pfile
, c99
) = 0;
1414 CPP_OPTION (pfile
, objc
) = 0;
1415 CPP_OPTION (pfile
, trigraphs
) = 1;
1416 new_pending_directive (CPP_OPTION (pfile
, pending
),
1417 "__STRICT_ANSI__", cpp_define
);
1419 case OPT_std_iso9899_199x
:
1420 case OPT_std_iso9899_1999
:
1423 CPP_OPTION (pfile
, cplusplus
) = 0;
1424 CPP_OPTION (pfile
, cplusplus_comments
) = 1;
1425 CPP_OPTION (pfile
, c89
) = 0;
1426 CPP_OPTION (pfile
, c99
) = 1;
1427 CPP_OPTION (pfile
, objc
) = 0;
1428 CPP_OPTION (pfile
, trigraphs
) = 1;
1429 new_pending_directive (CPP_OPTION (pfile
, pending
),
1430 "__STRICT_ANSI__", cpp_define
);
1431 new_pending_directive (CPP_OPTION (pfile
, pending
),
1432 "__STDC_VERSION__=199901L", cpp_define
);
1435 if (CPP_OPTION (pfile
, out_fname
) != NULL
)
1437 cpp_fatal (pfile
, "Output filename specified twice");
1440 CPP_OPTION (pfile
, out_fname
) = arg
;
1441 if (!strcmp (CPP_OPTION (pfile
, out_fname
), "-"))
1442 CPP_OPTION (pfile
, out_fname
) = "";
1445 fprintf (stderr
, _("GNU CPP version %s (cpplib)\n"), version_string
);
1446 #ifdef TARGET_VERSION
1449 fputc ('\n', stderr
);
1450 CPP_OPTION (pfile
, verbose
) = 1;
1452 case OPT_stdin_stdout
:
1453 /* JF handle '-' as file name meaning stdin or stdout */
1454 if (CPP_OPTION (pfile
, in_fname
) == NULL
)
1455 CPP_OPTION (pfile
, in_fname
) = "";
1456 else if (CPP_OPTION (pfile
, out_fname
) == NULL
)
1457 CPP_OPTION (pfile
, out_fname
) = "";
1460 /* Args to -d specify what parts of macros to dump.
1461 Silently ignore unrecognised options; they may
1462 be aimed at the compiler proper. */
1466 while ((c
= *arg
++) != '\0')
1470 CPP_OPTION (pfile
, dump_macros
) = dump_only
;
1471 CPP_OPTION (pfile
, no_output
) = 1;
1474 CPP_OPTION (pfile
, dump_macros
) = dump_names
;
1477 CPP_OPTION (pfile
, dump_macros
) = dump_definitions
;
1480 CPP_OPTION (pfile
, dump_includes
) = 1;
1485 /* The style of the choices here is a bit mixed.
1486 The chosen scheme is a hybrid of keeping all options in one string
1487 and specifying each option in a separate argument:
1488 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1489 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1490 -M[M][G][D file]. This is awkward to handle in specs, and is not
1492 /* ??? -MG must be specified in addition to one of -M or -MM.
1493 This can be relaxed in the future without breaking anything.
1494 The converse isn't true. */
1496 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1498 CPP_OPTION (pfile
, print_deps_missing_files
) = 1;
1504 if (opt_code
== OPT_M
|| opt_code
== OPT_MD
)
1505 CPP_OPTION (pfile
, print_deps
) = 2;
1507 CPP_OPTION (pfile
, print_deps
) = 1;
1509 /* For -MD and -MMD options, write deps on file named by next arg */
1510 /* For -M and -MM, write deps on standard output
1511 and suppress the usual output. */
1512 if (opt_code
== OPT_MD
|| opt_code
== OPT_MMD
)
1513 CPP_OPTION (pfile
, deps_file
) = arg
;
1515 CPP_OPTION (pfile
, no_output
) = 1;
1520 /* -A with an argument beginning with '-' acts as
1521 #unassert on whatever immediately follows the '-'.
1522 If "-" is the whole argument, we eliminate all
1523 predefined macros and assertions, including those
1524 that were specified earlier on the command line.
1525 That way we can get rid of any that were passed
1526 automatically in from GCC. */
1530 struct pending_option
*o1
, *o2
;
1532 o1
= CPP_OPTION (pfile
, pending
)->directive_head
;
1539 CPP_OPTION (pfile
, pending
)->directive_head
= NULL
;
1540 CPP_OPTION (pfile
, pending
)->directive_tail
= NULL
;
1543 new_pending_directive (CPP_OPTION (pfile
, pending
),
1544 arg
+ 1, cpp_unassert
);
1547 new_pending_directive (CPP_OPTION (pfile
, pending
),
1551 new_pending_directive (CPP_OPTION (pfile
, pending
), arg
, cpp_undef
);
1553 case OPT_I
: /* Add directory to path for includes. */
1554 if (!strcmp (arg
, "-"))
1557 Use the preceding -I directories for #include "..."
1558 but not #include <...>.
1559 Don't search the directory of the present file
1560 for #include "...". (Note that -I. -I- is not the same as
1561 the default setup; -I. uses the compiler's working dir.) */
1562 if (! CPP_OPTION (pfile
, ignore_srcdir
))
1564 struct cpp_pending
*pend
= CPP_OPTION (pfile
, pending
);
1565 pend
->quote_head
= pend
->brack_head
;
1566 pend
->quote_tail
= pend
->brack_tail
;
1567 pend
->brack_head
= 0;
1568 pend
->brack_tail
= 0;
1569 CPP_OPTION (pfile
, ignore_srcdir
) = 1;
1573 cpp_fatal (pfile
, "-I- specified twice");
1578 append_include_chain (pfile
, CPP_OPTION (pfile
, pending
),
1579 xstrdup (arg
), BRACKET
, 0);
1582 /* Add directory to beginning of system include path, as a system
1583 include directory. */
1584 append_include_chain (pfile
, CPP_OPTION (pfile
, pending
),
1585 xstrdup (arg
), SYSTEM
, 0);
1589 struct pending_option
*o
= (struct pending_option
*)
1590 xmalloc (sizeof (struct pending_option
));
1593 /* This list has to be built in reverse order so that
1594 when cpp_start_read pushes all the -include files onto
1595 the buffer stack, they will be scanned in forward order. */
1596 o
->next
= CPP_OPTION (pfile
, pending
)->include_head
;
1597 CPP_OPTION (pfile
, pending
)->include_head
= o
;
1602 struct pending_option
*o
= (struct pending_option
*)
1603 xmalloc (sizeof (struct pending_option
));
1607 APPEND (CPP_OPTION (pfile
, pending
), imacros
, o
);
1610 case OPT_iwithprefix
:
1611 /* Add directory to end of path for includes,
1612 with the default prefix at the front of its name. */
1614 case OPT_iwithprefixbefore
:
1615 /* Add directory to main path for includes,
1616 with the default prefix at the front of its name. */
1623 if (CPP_OPTION (pfile
, include_prefix
) != 0)
1625 size_t ipl
= CPP_OPTION (pfile
, include_prefix_len
);
1626 fname
= xmalloc (ipl
+ len
+ 1);
1627 memcpy (fname
, CPP_OPTION (pfile
, include_prefix
), ipl
);
1628 memcpy (fname
+ ipl
, arg
, len
+ 1);
1632 fname
= xmalloc (sizeof GCC_INCLUDE_DIR
- 8 + len
);
1633 memcpy (fname
, GCC_INCLUDE_DIR
, sizeof GCC_INCLUDE_DIR
- 9);
1634 memcpy (fname
+ sizeof GCC_INCLUDE_DIR
- 9, arg
, len
+ 1);
1637 append_include_chain (pfile
, CPP_OPTION (pfile
, pending
), fname
,
1638 opt_code
== OPT_iwithprefix
? SYSTEM
: BRACKET
, 0);
1642 /* Add directory to end of path for includes. */
1643 append_include_chain (pfile
, CPP_OPTION (pfile
, pending
),
1644 xstrdup (arg
), AFTER
, 0);
1647 /* Silently ignore unrecognised options */
1648 if (!strcmp (argv
[i
], "-Wall"))
1650 CPP_OPTION (pfile
, warn_trigraphs
) = 1;
1651 CPP_OPTION (pfile
, warn_comments
) = 1;
1653 else if (!strcmp (argv
[i
], "-Wtraditional"))
1654 CPP_OPTION (pfile
, warn_traditional
) = 1;
1655 else if (!strcmp (argv
[i
], "-Wtrigraphs"))
1656 CPP_OPTION (pfile
, warn_trigraphs
) = 1;
1657 else if (!strcmp (argv
[i
], "-Wcomment"))
1658 CPP_OPTION (pfile
, warn_comments
) = 1;
1659 else if (!strcmp (argv
[i
], "-Wcomments"))
1660 CPP_OPTION (pfile
, warn_comments
) = 1;
1661 else if (!strcmp (argv
[i
], "-Wundef"))
1662 CPP_OPTION (pfile
, warn_undef
) = 1;
1663 else if (!strcmp (argv
[i
], "-Wimport"))
1664 CPP_OPTION (pfile
, warn_import
) = 1;
1665 else if (!strcmp (argv
[i
], "-Werror"))
1666 CPP_OPTION (pfile
, warnings_are_errors
) = 1;
1667 else if (!strcmp (argv
[i
], "-Wno-traditional"))
1668 CPP_OPTION (pfile
, warn_traditional
) = 0;
1669 else if (!strcmp (argv
[i
], "-Wno-trigraphs"))
1670 CPP_OPTION (pfile
, warn_trigraphs
) = 0;
1671 else if (!strcmp (argv
[i
], "-Wno-comment"))
1672 CPP_OPTION (pfile
, warn_comments
) = 0;
1673 else if (!strcmp (argv
[i
], "-Wno-comments"))
1674 CPP_OPTION (pfile
, warn_comments
) = 0;
1675 else if (!strcmp (argv
[i
], "-Wno-undef"))
1676 CPP_OPTION (pfile
, warn_undef
) = 0;
1677 else if (!strcmp (argv
[i
], "-Wno-import"))
1678 CPP_OPTION (pfile
, warn_import
) = 0;
1679 else if (!strcmp (argv
[i
], "-Wno-error"))
1680 CPP_OPTION (pfile
, warnings_are_errors
) = 0;
1689 opt_comp (const void *p1
, const void *p2
)
1691 return strcmp (((struct cl_option
*)p1
)->opt_text
,
1692 ((struct cl_option
*)p2
)->opt_text
);
1696 /* Handle command-line options in (argc, argv).
1697 Can be called multiple times, to handle multiple sets of options.
1698 Returns if an unrecognized option is seen.
1699 Returns number of strings consumed. */
1701 cpp_handle_options (pfile
, argc
, argv
)
1707 int strings_processed
;
1710 static int opts_sorted
= 0;
1715 /* For non-ASCII hosts, the array needs to be sorted at runtime */
1716 qsort (cl_options
, N_OPTS
, sizeof (struct cl_option
), opt_comp
);
1720 for (i
= 0; i
< argc
; i
+= strings_processed
)
1722 strings_processed
= handle_option (pfile
, argc
- i
, argv
+ i
);
1723 if (strings_processed
== 0)
1732 fprintf (stderr
, _("Usage: %s [switches] input output\n"), progname
);
1735 -include <file> Include the contents of <file> before other files\n\
1736 -imacros <file> Accept definition of macros in <file>\n\
1737 -iprefix <path> Specify <path> as a prefix for next two options\n\
1738 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1739 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1740 -isystem <dir> Add <dir> to the start of the system include path\n\
1741 -idirafter <dir> Add <dir> to the end of the system include path\n\
1742 -I <dir> Add <dir> to the end of the main include path\n\
1743 -I- Fine-grained include path control; see info docs\n\
1744 -nostdinc Do not search system include directories\n\
1745 (dirs specified with -isystem will still be used)\n\
1746 -nostdinc++ Do not search system include directories for C++\n\
1747 -o <file> Put output into <file>\n\
1748 -pedantic Issue all warnings demanded by strict ANSI C\n\
1749 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1750 -traditional Follow K&R pre-processor behaviour\n\
1751 -trigraphs Support ANSI C trigraphs\n\
1752 -lang-c Assume that the input sources are in C\n\
1753 -lang-c89 Assume that the input sources are in C89\n\
1754 -lang-c++ Assume that the input sources are in C++\n\
1755 -lang-objc Assume that the input sources are in ObjectiveC\n\
1756 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1757 -lang-asm Assume that the input sources are in assembler\n\
1758 -lang-fortran Assume that the input sources are in Fortran\n\
1759 -lang-chill Assume that the input sources are in Chill\n\
1760 -std=<std name> Specify the conformance standard; one of:\n\
1761 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1762 iso9899:199409, iso9899:1999\n\
1763 -+ Allow parsing of C++ style features\n\
1764 -w Inhibit warning messages\n\
1765 -Wtrigraphs Warn if trigraphs are encountered\n\
1766 -Wno-trigraphs Do not warn about trigraphs\n\
1767 -Wcomment{s} Warn if one comment starts inside another\n\
1768 -Wno-comment{s} Do not warn about comments\n\
1769 -Wtraditional Warn if a macro argument is/would be turned into\n\
1770 a string if -traditional is specified\n\
1771 -Wno-traditional Do not warn about stringification\n\
1772 -Wundef Warn if an undefined macro is used by #if\n\
1773 -Wno-undef Do not warn about testing undefined macros\n\
1774 -Wimport Warn about the use of the #import directive\n\
1775 -Wno-import Do not warn about the use of #import\n\
1776 -Werror Treat all warnings as errors\n\
1777 -Wno-error Do not treat warnings as errors\n\
1778 -Wall Enable all preprocessor warnings\n\
1779 -M Generate make dependencies\n\
1780 -MM As -M, but ignore system header files\n\
1781 -MD As -M, but put output in a .d file\n\
1782 -MMD As -MD, but ignore system header files\n\
1783 -MG Treat missing header file as generated files\n\
1784 -g3 Include #define and #undef directives in the output\n\
1785 -D<macro> Define a <macro> with string '1' as its value\n\
1786 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1787 -A<question> (<answer>) Assert the <answer> to <question>\n\
1788 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1789 -U<macro> Undefine <macro> \n\
1790 -v Display the version number\n\
1791 -H Print the name of header files as they are used\n\
1792 -C Do not discard comments\n\
1793 -dM Display a list of macro definitions active at end\n\
1794 -dD Preserve macro definitions in output\n\
1795 -dN As -dD except that only the names are preserved\n\
1796 -dI Include #include directives in the output\n\
1797 -P Do not generate #line directives\n\
1798 -$ Do not allow '$' in identifiers\n\
1799 -remap Remap file names when including files.\n\
1800 --version Display version information\n\
1801 -h or --help Display this information\n\