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. */
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 #ifndef STANDARD_INCLUDE_DIR
51 #define STANDARD_INCLUDE_DIR "/usr/include"
54 /* We let tm.h override the types used here, to handle trivial differences
55 such as the choice of unsigned int or long unsigned int for size_t.
56 When machines start needing nontrivial differences in the size type,
57 it would be best to do something here to figure out automatically
58 from other information what type to use. */
60 /* The string value for __SIZE_TYPE__. */
63 #define SIZE_TYPE "long unsigned int"
66 /* The string value for __PTRDIFF_TYPE__. */
69 #define PTRDIFF_TYPE "long int"
72 /* The string value for __WCHAR_TYPE__. */
75 #define WCHAR_TYPE "int"
78 /* The string value for __USER_LABEL_PREFIX__ */
80 #ifndef USER_LABEL_PREFIX
81 #define USER_LABEL_PREFIX ""
84 /* The string value for __REGISTER_PREFIX__ */
86 #ifndef REGISTER_PREFIX
87 #define REGISTER_PREFIX ""
90 /* This is the default list of directories to search for include files.
91 It may be overridden by the various -I and -ixxx options.
93 #include "file" looks in the same directory as the current file,
95 #include <file> just looks in this list.
97 All these directories are treated as `system' include directories
98 (they are not subject to pedantic warnings in some cases). */
100 struct default_include
102 const char *fname; /* The name of the directory. */
103 const char *component; /* The component containing the directory
104 (see update_path in prefix.c) */
105 int cplusplus; /* Only look here if we're compiling C++. */
106 int cxx_aware; /* Includes in this directory don't need to
107 be wrapped in extern "C" when compiling
111 #ifndef STANDARD_INCLUDE_COMPONENT
112 #define STANDARD_INCLUDE_COMPONENT 0
116 #undef LOCAL_INCLUDE_DIR
117 #undef SYSTEM_INCLUDE_DIR
118 #undef STANDARD_INCLUDE_DIR
120 #undef CROSS_INCLUDE_DIR
123 static const struct default_include include_defaults_array[]
124 #ifdef INCLUDE_DEFAULTS
128 #ifdef GPLUSPLUS_INCLUDE_DIR
129 /* Pick up GNU C++ specific include files. */
130 { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },
132 #ifdef LOCAL_INCLUDE_DIR
133 /* /usr/local/include comes before the fixincluded header files. */
134 { LOCAL_INCLUDE_DIR, 0, 0, 1 },
136 #ifdef GCC_INCLUDE_DIR
137 /* This is the dir for fixincludes and for gcc's private headers. */
138 { GCC_INCLUDE_DIR, "GCC", 0, 0 },
140 #ifdef CROSS_INCLUDE_DIR
141 /* One place the target system's headers might be. */
142 { CROSS_INCLUDE_DIR, "GCC", 0, 0 },
144 #ifdef TOOL_INCLUDE_DIR
145 /* Another place the target system's headers might be. */
146 { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1 },
148 #ifdef SYSTEM_INCLUDE_DIR
149 /* Some systems have an extra dir of include files. */
150 { SYSTEM_INCLUDE_DIR, 0, 0, 0 },
152 #ifdef STANDARD_INCLUDE_DIR
153 /* /usr/include comes dead last. */
154 { STANDARD_INCLUDE_DIR, STANDARD_INCLUDE_COMPONENT, 0, 0 },
158 #endif /* no INCLUDE_DEFAULTS */
160 /* Internal structures and prototypes. */
162 /* A `struct pending_option' remembers one -D, -A, -U, -include, or -imacros
163 switch. There are four lists: one for -D and -U, one for -A, one
164 for -include, one for -imacros. `undef' is set for -U, clear for
165 -D, ignored for the others.
166 (Future: add an equivalent of -U for -A) */
168 typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
169 struct pending_option
171 struct pending_option *next;
173 cl_directive_handler handler;
176 /* The `pending' structure accumulates all the options that are not
177 actually processed until we hit cpp_start_read. It consists of
178 several lists, one for each type of option. We keep both head and
179 tail pointers for quick insertion. */
182 struct pending_option *directive_head, *directive_tail;
184 struct file_name_list *quote_head, *quote_tail;
185 struct file_name_list *brack_head, *brack_tail;
186 struct file_name_list *systm_head, *systm_tail;
187 struct file_name_list *after_head, *after_tail;
189 struct pending_option *imacros_head, *imacros_tail;
190 struct pending_option *include_head, *include_tail;
194 #define APPEND(pend, list, elt) \
195 do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \
196 else (pend)->list##_tail->next = (elt); \
197 (pend)->list##_tail = (elt); \
200 #define APPEND(pend, list, elt) \
201 do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \
202 else (pend)->list/**/_tail->next = (elt); \
203 (pend)->list/**/_tail = (elt); \
207 static void print_help PARAMS ((void));
208 static void path_include PARAMS ((cpp_reader *,
209 struct cpp_pending *,
211 static void initialize_builtins PARAMS ((cpp_reader *));
212 static void append_include_chain PARAMS ((cpp_reader *,
213 struct cpp_pending *,
215 static void merge_include_chains PARAMS ((cpp_reader *));
217 static void dump_special_to_buffer PARAMS ((cpp_reader *, const U_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) this table can be
234 initialized, constant data. Otherwise, it has to be filled in at
237 #if (GCC_VERSION >= 2007)
238 #define init_IStable() /* nothing */
239 #define ISTABLE __extension__ 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, macro_len)
520 const U_CHAR *macro_name;
523 static const char define_directive[] = "#define ";
524 CPP_RESERVE (pfile, sizeof(define_directive) + macro_len);
525 CPP_PUTS_Q (pfile, define_directive, sizeof(define_directive)-1);
526 CPP_PUTS_Q (pfile, macro_name, macro_len);
527 CPP_PUTC_Q (pfile, ' ');
528 _cpp_expand_to_buffer (pfile, macro_name, macro_len);
529 CPP_PUTC (pfile, '\n');
532 /* Initialize a cpp_reader structure. */
534 cpp_reader_init (pfile)
537 memset ((char *) pfile, 0, sizeof (cpp_reader));
539 pfile->token_buffer_size = 200;
540 pfile->token_buffer = (U_CHAR *) xmalloc (pfile->token_buffer_size);
541 CPP_SET_WRITTEN (pfile, 0);
543 CPP_OPTION (pfile, dollars_in_ident) = 1;
544 CPP_OPTION (pfile, cplusplus_comments) = 1;
545 CPP_OPTION (pfile, warn_import) = 1;
546 CPP_OPTION (pfile, discard_comments) = 1;
547 CPP_OPTION (pfile, show_column) = 1;
548 CPP_OPTION (pfile, tabstop) = 8;
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 /* Initialize a cpp_printer structure. As a side effect, open the
560 cpp_printer_init (pfile, print)
564 memset (print, '\0', sizeof (cpp_printer));
565 if (CPP_OPTION (pfile, out_fname) == NULL)
566 CPP_OPTION (pfile, out_fname) = "";
568 if (CPP_OPTION (pfile, out_fname)[0] == '\0')
569 print->outf = stdout;
572 print->outf = fopen (CPP_OPTION (pfile, out_fname), "w");
575 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
582 /* Free resources used by PFILE.
583 This is the cpp_reader 'finalizer' or 'destructor' (in C++ terminology). */
588 while (CPP_BUFFER (pfile) != NULL)
589 cpp_pop_buffer (pfile);
591 if (pfile->token_buffer)
593 free (pfile->token_buffer);
594 pfile->token_buffer = NULL;
597 if (pfile->input_buffer)
599 free (pfile->input_buffer);
600 pfile->input_buffer = NULL;
601 pfile->input_buffer_len = 0;
605 deps_free (pfile->deps);
607 htab_delete (pfile->hashtab);
608 htab_delete (pfile->all_include_files);
612 /* This structure defines one built-in macro. A node of type TYPE will
613 be entered in the macro hash table under the name NAME, with value
614 VALUE (if any). FLAGS tweaks the behavior a little:
615 DUMP write debug info for this macro
616 VERS value is the global version_string, quoted
617 ULP value is the global user_label_prefix
625 unsigned short flags;
632 #define B(n, t) { U n, 0, t, 0, sizeof n - 1 }
633 #define C(n, v) { U n, U v, T_CONST, DUMP, sizeof n - 1 }
634 #define X(n, v, t, f) { U n, U v, t, DUMP|f, sizeof n - 1 }
635 static const struct builtin builtin_array[] =
637 B("__TIME__", T_TIME),
638 B("__DATE__", T_DATE),
639 B("__FILE__", T_FILE),
640 B("__BASE_FILE__", T_BASE_FILE),
641 B("__LINE__", T_SPECLINE),
642 B("__INCLUDE_LEVEL__", T_INCLUDE_LEVEL),
644 X("__VERSION__", 0, T_XCONST, VERS),
645 X("__USER_LABEL_PREFIX__", 0, T_CONST, ULP),
646 X("__STDC__", "1", T_STDC, 0),
647 C("__REGISTER_PREFIX__", REGISTER_PREFIX),
648 C("__HAVE_BUILTIN_SETJMP__", "1"),
649 #ifndef NO_BUILTIN_SIZE_TYPE
650 C("__SIZE_TYPE__", SIZE_TYPE),
652 #ifndef NO_BUILTIN_PTRDIFF_TYPE
653 C("__PTRDIFF_TYPE__", PTRDIFF_TYPE),
655 #ifndef NO_BUILTIN_WCHAR_TYPE
656 C("__WCHAR_TYPE__", WCHAR_TYPE),
662 #define builtin_array_end \
663 builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
665 /* Subroutine of cpp_start_read; reads the builtins table above and
666 enters the macros into the hash table. */
668 initialize_builtins (pfile)
671 const struct builtin *b;
674 for(b = builtin_array; b < builtin_array_end; b++)
676 if (b->type == T_STDC && CPP_TRADITIONAL (pfile))
680 val = (const U_CHAR *) user_label_prefix;
681 else if (b->flags & VERS)
683 val = (const U_CHAR *) xmalloc (strlen (version_string) + 3);
684 sprintf ((char *)val, "\"%s\"", version_string);
689 hp = _cpp_lookup (pfile, b->name, b->len);
690 hp->value.cpval = val;
693 if ((b->flags & DUMP) && CPP_OPTION (pfile, debug_output))
694 dump_special_to_buffer (pfile, b->name, b->len);
702 /* Another subroutine of cpp_start_read. This one sets up to do
703 dependency-file output. */
705 initialize_dependency_output (pfile)
708 char *spec, *s, *output_file;
710 /* Either of two environment variables can specify output of deps.
711 Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
712 where OUTPUT_FILE is the file to write deps info to
713 and DEPS_TARGET is the target to mention in the deps. */
715 if (CPP_OPTION (pfile, print_deps) == 0)
717 spec = getenv ("DEPENDENCIES_OUTPUT");
719 CPP_OPTION (pfile, print_deps) = 1;
722 spec = getenv ("SUNPRO_DEPENDENCIES");
724 CPP_OPTION (pfile, print_deps) = 2;
729 /* Find the space before the DEPS_TARGET, if there is one. */
730 s = strchr (spec, ' ');
733 CPP_OPTION (pfile, deps_target) = s + 1;
734 output_file = (char *) xmalloc (s - spec + 1);
735 memcpy (output_file, spec, s - spec);
736 output_file[s - spec] = 0;
740 CPP_OPTION (pfile, deps_target) = 0;
744 CPP_OPTION (pfile, deps_file) = output_file;
745 CPP_OPTION (pfile, print_deps_append) = 1;
748 pfile->deps = deps_init ();
750 /* Print the expected object file name as the target of this Make-rule. */
751 if (CPP_OPTION (pfile, deps_target))
752 deps_add_target (pfile->deps, CPP_OPTION (pfile, deps_target));
753 else if (*CPP_OPTION (pfile, in_fname) == 0)
754 deps_add_target (pfile->deps, "-");
756 deps_calc_target (pfile->deps, CPP_OPTION (pfile, in_fname));
758 if (CPP_OPTION (pfile, in_fname))
759 deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
762 /* And another subroutine. This one sets up the standard include path. */
764 initialize_standard_includes (pfile)
768 const struct default_include *p;
769 const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
771 /* Several environment variables may add to the include search path.
772 CPATH specifies an additional list of directories to be searched
773 as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
774 etc. specify an additional list of directories to be searched as
775 if specified with -isystem, for the language indicated. */
777 GET_ENV_PATH_LIST (path, "CPATH");
778 if (path != 0 && *path != 0)
779 path_include (pfile, CPP_OPTION (pfile, pending), path, BRACKET);
781 switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
784 GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
787 GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
790 GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
793 GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
796 if (path != 0 && *path != 0)
797 path_include (pfile, CPP_OPTION (pfile, pending), path, SYSTEM);
799 /* Search "translated" versions of GNU directories.
800 These have /usr/local/lib/gcc... replaced by specd_prefix. */
801 if (specd_prefix != 0)
803 char *default_prefix = (char *) alloca (sizeof GCC_INCLUDE_DIR - 7);
804 /* Remove the `include' from /usr/local/lib/gcc.../include.
805 GCC_INCLUDE_DIR will always end in /include. */
806 int default_len = sizeof GCC_INCLUDE_DIR - 8;
807 int specd_len = strlen (specd_prefix);
809 memcpy (default_prefix, GCC_INCLUDE_DIR, default_len);
810 default_prefix[default_len] = '\0';
812 for (p = include_defaults_array; p->fname; p++)
814 /* Some standard dirs are only for C++. */
816 || (CPP_OPTION (pfile, cplusplus)
817 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
819 /* Does this dir start with the prefix? */
820 if (!strncmp (p->fname, default_prefix, default_len))
822 /* Yes; change prefix and add to search list. */
823 int flen = strlen (p->fname);
824 int this_len = specd_len + flen - default_len;
825 char *str = (char *) xmalloc (this_len + 1);
826 memcpy (str, specd_prefix, specd_len);
827 memcpy (str + specd_len,
828 p->fname + default_len,
829 flen - default_len + 1);
831 append_include_chain (pfile, CPP_OPTION (pfile, pending),
832 str, SYSTEM, p->cxx_aware);
838 /* Search ordinary names for GNU include directories. */
839 for (p = include_defaults_array; p->fname; p++)
841 /* Some standard dirs are only for C++. */
843 || (CPP_OPTION (pfile, cplusplus)
844 && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
846 /* XXX Potential memory leak! */
847 char *str = xstrdup (update_path (p->fname, p->component));
848 append_include_chain (pfile, CPP_OPTION (pfile, pending),
849 str, SYSTEM, p->cxx_aware);
854 /* This is called after options have been processed.
855 * Check options for consistency, and setup for processing input
856 * from the file named FNAME. (Use standard input if FNAME==NULL.)
857 * Return 1 on success, 0 on failure.
861 cpp_start_read (pfile, print, fname)
866 struct pending_option *p, *q;
868 /* -MG doesn't select the form of output and must be specified with one of
869 -M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
870 inhibit compilation. */
871 if (CPP_OPTION (pfile, print_deps_missing_files)
872 && (CPP_OPTION (pfile, print_deps) == 0
873 || !CPP_OPTION (pfile, no_output)))
875 cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
879 /* Chill should not be used with -trigraphs. */
880 if (CPP_OPTION (pfile, chill) && CPP_OPTION (pfile, trigraphs))
882 cpp_warning (pfile, "-lang-chill and -trigraphs are mutually exclusive");
883 CPP_OPTION (pfile, trigraphs) = 0;
886 /* -Wtraditional is not useful in C++ mode. */
887 if (CPP_OPTION (pfile, cplusplus))
888 CPP_OPTION (pfile, warn_traditional) = 0;
890 /* Set this if it hasn't been set already. */
891 if (user_label_prefix == NULL)
892 user_label_prefix = USER_LABEL_PREFIX;
894 /* Don't bother trying to do macro expansion if we've already done
896 if (CPP_OPTION (pfile, preprocessed))
897 pfile->no_macro_expand++;
899 /* Set up the IStable. This doesn't do anything if we were compiled
900 with a compiler that supports C99 designated initializers. */
903 /* Set up the tables used by read_and_prescan. */
904 _cpp_init_input_buffer (pfile);
906 /* Set up the include search path now. */
907 if (! CPP_OPTION (pfile, no_standard_includes))
908 initialize_standard_includes (pfile);
910 merge_include_chains (pfile);
912 /* With -v, print the list of dirs to search. */
913 if (CPP_OPTION (pfile, verbose))
915 struct file_name_list *l;
916 fprintf (stderr, _("#include \"...\" search starts here:\n"));
917 for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
919 if (l == CPP_OPTION (pfile, bracket_include))
920 fprintf (stderr, _("#include <...> search starts here:\n"));
921 fprintf (stderr, " %s\n", l->name);
923 fprintf (stderr, _("End of search list.\n"));
926 /* Open the main input file. This must be done early, so we have a
927 buffer to stand on. */
928 if (CPP_OPTION (pfile, in_fname) == NULL
929 || *CPP_OPTION (pfile, in_fname) == 0)
931 CPP_OPTION (pfile, in_fname) = fname;
932 if (CPP_OPTION (pfile, in_fname) == NULL)
933 CPP_OPTION (pfile, in_fname) = "";
935 if (CPP_OPTION (pfile, out_fname) == NULL)
936 CPP_OPTION (pfile, out_fname) = "";
938 if (!cpp_read_file (pfile, fname))
941 initialize_dependency_output (pfile);
943 /* -D and friends may produce output, which should be identified
946 CPP_BUFFER (pfile)->lineno = 0;
951 print->last_fname = CPP_BUFFER (pfile)->nominal_fname;
952 print->last_bsd = pfile->buffer_stack_depth;
953 print->written = CPP_WRITTEN (pfile);
956 /* Install __LINE__, etc. */
957 initialize_builtins (pfile);
959 /* Do -U's, -D's and -A's in the order they were seen. */
960 p = CPP_OPTION (pfile, pending)->directive_head;
963 (*p->handler) (pfile, p->arg);
968 pfile->done_initializing = 1;
969 pfile->only_seen_white = 2;
970 CPP_BUFFER (pfile)->lineno = 1;
971 if (print && ! CPP_OPTION (pfile, no_output))
972 cpp_output_tokens (pfile, print);
974 /* The -imacros files can be scanned now, but the -include files
975 have to be pushed onto the include stack and processed later,
976 in the main loop calling cpp_get_token. */
978 p = CPP_OPTION (pfile, pending)->imacros_head;
981 if (cpp_read_file (pfile, p->arg))
982 cpp_scan_buffer_nooutput (pfile);
988 p = CPP_OPTION (pfile, pending)->include_head;
991 if (cpp_read_file (pfile, p->arg)
992 && print && ! CPP_OPTION (pfile, no_output))
993 cpp_output_tokens (pfile, print);
999 free (CPP_OPTION (pfile, pending));
1000 CPP_OPTION (pfile, pending) = NULL;
1005 /* This is called at the end of preprocessing. It pops the
1006 last buffer and writes dependency output. It should also
1007 clear macro definitions, such that you could call cpp_start_read
1008 with a new filename to restart processing. */
1010 cpp_finish (pfile, print)
1014 if (CPP_BUFFER (pfile))
1016 cpp_ice (pfile, "buffers still stacked in cpp_finish");
1017 while (CPP_BUFFER (pfile))
1018 cpp_pop_buffer (pfile);
1021 /* Don't write the deps file if preprocessing has failed. */
1022 if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
1024 /* Stream on which to print the dependency information. */
1025 FILE *deps_stream = 0;
1026 const char *deps_mode
1027 = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
1028 if (CPP_OPTION (pfile, deps_file) == 0)
1029 deps_stream = stdout;
1032 deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
1033 if (deps_stream == 0)
1034 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
1038 deps_write (pfile->deps, deps_stream, 72);
1039 if (CPP_OPTION (pfile, deps_file))
1041 if (ferror (deps_stream) || fclose (deps_stream) != 0)
1042 cpp_fatal (pfile, "I/O error on output");
1047 if (CPP_OPTION (pfile, dump_macros) == dump_only)
1048 _cpp_dump_macro_hash (pfile);
1050 /* Flush any pending output. */
1053 cpp_output_tokens (pfile, print);
1054 if (ferror (print->outf) || fclose (print->outf))
1055 cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
1060 new_pending_directive (pend, text, handler)
1061 struct cpp_pending *pend;
1063 cl_directive_handler handler;
1065 struct pending_option *o = (struct pending_option *)
1066 xmalloc (sizeof (struct pending_option));
1070 o->handler = handler;
1071 APPEND (pend, directive, o);
1074 /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
1075 I.e. a const string initializer with parens around it. That is
1076 what N_("string") resolves to, so we make no_* be macros instead. */
1077 #define no_arg N_("Argument missing after %s")
1078 #define no_ass N_("Assertion missing after %s")
1079 #define no_dir N_("Directory name missing after %s")
1080 #define no_fil N_("File name missing after %s")
1081 #define no_mac N_("Macro name missing after %s")
1082 #define no_pth N_("Path name missing after %s")
1083 #define no_num N_("Number missing after %s")
1085 /* This is the list of all command line options, with the leading
1086 "-" removed. It must be sorted in ASCII collating order. */
1087 #define COMMAND_LINE_OPTIONS \
1088 DEF_OPT("", 0, OPT_stdin_stdout) \
1089 DEF_OPT("$", 0, OPT_dollar) \
1090 DEF_OPT("+", 0, OPT_plus) \
1091 DEF_OPT("-help", 0, OPT__help) \
1092 DEF_OPT("-version", 0, OPT__version) \
1093 DEF_OPT("A", no_ass, OPT_A) \
1094 DEF_OPT("C", 0, OPT_C) \
1095 DEF_OPT("D", no_mac, OPT_D) \
1096 DEF_OPT("H", 0, OPT_H) \
1097 DEF_OPT("I", no_dir, OPT_I) \
1098 DEF_OPT("M", 0, OPT_M) \
1099 DEF_OPT("MD", no_fil, OPT_MD) \
1100 DEF_OPT("MG", 0, OPT_MG) \
1101 DEF_OPT("MM", 0, OPT_MM) \
1102 DEF_OPT("MMD", no_fil, OPT_MMD) \
1103 DEF_OPT("P", 0, OPT_P) \
1104 DEF_OPT("U", no_mac, OPT_U) \
1105 DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
1106 DEF_OPT("d", no_arg, OPT_d) \
1107 DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
1108 DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
1109 DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
1110 DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
1111 DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
1112 DEF_OPT("fshow-column", 0, OPT_fshow_column) \
1113 DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \
1114 DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
1115 DEF_OPT("h", 0, OPT_h) \
1116 DEF_OPT("idirafter", no_dir, OPT_idirafter) \
1117 DEF_OPT("imacros", no_fil, OPT_imacros) \
1118 DEF_OPT("include", no_fil, OPT_include) \
1119 DEF_OPT("iprefix", no_pth, OPT_iprefix) \
1120 DEF_OPT("isystem", no_dir, OPT_isystem) \
1121 DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
1122 DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
1123 DEF_OPT("lang-asm", 0, OPT_lang_asm) \
1124 DEF_OPT("lang-c", 0, OPT_lang_c) \
1125 DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
1126 DEF_OPT("lang-c89", 0, OPT_lang_c89) \
1127 DEF_OPT("lang-chill", 0, OPT_lang_chill) \
1128 DEF_OPT("lang-fortran", 0, OPT_lang_fortran) \
1129 DEF_OPT("lang-objc", 0, OPT_lang_objc) \
1130 DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
1131 DEF_OPT("nostdinc", 0, OPT_nostdinc) \
1132 DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
1133 DEF_OPT("o", no_fil, OPT_o) \
1134 DEF_OPT("pedantic", 0, OPT_pedantic) \
1135 DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
1136 DEF_OPT("remap", 0, OPT_remap) \
1137 DEF_OPT("std=c89", 0, OPT_std_c89) \
1138 DEF_OPT("std=c99", 0, OPT_std_c99) \
1139 DEF_OPT("std=c9x", 0, OPT_std_c9x) \
1140 DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
1141 DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
1142 DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
1143 DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
1144 DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
1145 DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
1146 DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
1147 DEF_OPT("traditional", 0, OPT_traditional) \
1148 DEF_OPT("trigraphs", 0, OPT_trigraphs) \
1149 DEF_OPT("v", 0, OPT_v) \
1150 DEF_OPT("w", 0, OPT_w)
1152 #define DEF_OPT(text, msg, code) code,
1155 COMMAND_LINE_OPTIONS
1162 const char *opt_text;
1165 enum opt_code opt_code;
1168 #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
1170 static struct cl_option cl_options[] =
1172 static const struct cl_option cl_options[] =
1175 COMMAND_LINE_OPTIONS
1178 #undef COMMAND_LINE_OPTIONS
1180 /* Perform a binary search to find which, if any, option the given
1181 command-line matches. Returns its index in the option array,
1182 negative on failure. Complications arise since some options can be
1183 suffixed with an argument, and multiple complete matches can occur,
1184 e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
1185 accept options beginning with -g and -W that we do not recognise,
1186 but not to swallow any subsequent command line argument; these are
1187 handled as special cases in cpp_handle_option */
1189 parse_option (input)
1192 unsigned int md, mn, mx;
1203 opt_len = cl_options[md].opt_len;
1204 comp = strncmp (input, cl_options[md].opt_text, opt_len);
1212 if (input[opt_len] == '\0')
1214 /* We were passed more text. If the option takes an argument,
1215 we may match a later option or we may have been passed the
1216 argument. The longest possible option match succeeds.
1217 If the option takes no arguments we have not matched and
1218 continue the search (e.g. input="stdc++" match was "stdc") */
1220 if (cl_options[md].msg)
1222 /* Scan forwards. If we get an exact match, return it.
1223 Otherwise, return the longest option-accepting match.
1224 This loops no more than twice with current options */
1226 for (; mn < N_OPTS; mn++)
1228 opt_len = cl_options[mn].opt_len;
1229 if (strncmp (input, cl_options[mn].opt_text, opt_len))
1231 if (input[opt_len] == '\0')
1233 if (cl_options[mn].msg)
1244 /* Handle one command-line option in (argc, argv).
1245 Can be called multiple times, to handle multiple sets of options.
1246 Returns number of strings consumed. */
1249 handle_option (pfile, argc, argv)
1256 if (argv[i][0] != '-')
1258 if (CPP_OPTION (pfile, out_fname) != NULL)
1259 cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
1261 else if (CPP_OPTION (pfile, in_fname) != NULL)
1262 CPP_OPTION (pfile, out_fname) = argv[i];
1264 CPP_OPTION (pfile, in_fname) = argv[i];
1268 enum opt_code opt_code;
1270 const char *arg = 0;
1273 opt_index = parse_option (&argv[i][1]);
1277 opt_code = cl_options[opt_index].opt_code;
1278 if (cl_options[opt_index].msg)
1280 arg = &argv[i][cl_options[opt_index].opt_len + 1];
1282 /* Yuk. Special case for -g and -W as they must not swallow
1283 up any following argument. If this becomes common, add
1284 another field to the cl_options table */
1285 if (arg[0] == '\0' && !(opt_code == OPT_g || opt_code == OPT_W))
1290 cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
1298 case N_OPTS: /* shut GCC up */
1300 case OPT_fleading_underscore:
1301 user_label_prefix = "_";
1303 case OPT_fno_leading_underscore:
1304 user_label_prefix = "";
1306 case OPT_fpreprocessed:
1307 CPP_OPTION (pfile, preprocessed) = 1;
1309 case OPT_fno_preprocessed:
1310 CPP_OPTION (pfile, preprocessed) = 0;
1312 case OPT_fshow_column:
1313 CPP_OPTION (pfile, show_column) = 1;
1315 case OPT_fno_show_column:
1316 CPP_OPTION (pfile, show_column) = 0;
1319 /* Silently ignore empty string, non-longs and silly values. */
1323 long tabstop = strtol (arg, &endptr, 10);
1324 if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100)
1325 CPP_OPTION (pfile, tabstop) = tabstop;
1329 CPP_OPTION (pfile, inhibit_warnings) = 1;
1331 case OPT_g: /* Silently ignore anything but -g3 */
1332 if (!strcmp(&argv[i][2], "3"))
1333 CPP_OPTION (pfile, debug_output) = 1;
1341 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1345 CPP_OPTION (pfile, discard_comments) = 0;
1348 CPP_OPTION (pfile, no_line_commands) = 1;
1350 case OPT_dollar: /* Don't include $ in identifiers. */
1351 CPP_OPTION (pfile, dollars_in_ident) = 0;
1354 CPP_OPTION (pfile, print_include_names) = 1;
1357 new_pending_directive (CPP_OPTION (pfile, pending), arg, cpp_define);
1359 case OPT_pedantic_errors:
1360 CPP_OPTION (pfile, pedantic_errors) = 1;
1363 CPP_OPTION (pfile, pedantic) = 1;
1365 case OPT_traditional:
1366 CPP_OPTION (pfile, traditional) = 1;
1367 CPP_OPTION (pfile, cplusplus_comments) = 0;
1368 CPP_OPTION (pfile, trigraphs) = 0;
1369 CPP_OPTION (pfile, warn_trigraphs) = 0;
1372 CPP_OPTION (pfile, trigraphs) = 1;
1375 CPP_OPTION (pfile, cplusplus) = 1;
1376 CPP_OPTION (pfile, cplusplus_comments) = 1;
1379 CPP_OPTION (pfile, remap) = 1;
1382 CPP_OPTION (pfile, include_prefix) = arg;
1383 CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
1386 CPP_OPTION (pfile, cplusplus) = 0;
1387 CPP_OPTION (pfile, cplusplus_comments) = 1;
1388 CPP_OPTION (pfile, c89) = 0;
1389 CPP_OPTION (pfile, c99) = 1;
1390 CPP_OPTION (pfile, objc) = 0;
1393 CPP_OPTION (pfile, cplusplus) = 0;
1394 CPP_OPTION (pfile, cplusplus_comments) = 0;
1395 CPP_OPTION (pfile, c89) = 1;
1396 CPP_OPTION (pfile, c99) = 0;
1397 CPP_OPTION (pfile, objc) = 0;
1398 CPP_OPTION (pfile, trigraphs) = 1;
1399 new_pending_directive (CPP_OPTION (pfile, pending),
1400 "__STRICT_ANSI__", cpp_define);
1402 case OPT_lang_cplusplus:
1403 CPP_OPTION (pfile, cplusplus) = 1;
1404 CPP_OPTION (pfile, cplusplus_comments) = 1;
1405 CPP_OPTION (pfile, c89) = 0;
1406 CPP_OPTION (pfile, c99) = 0;
1407 CPP_OPTION (pfile, objc) = 0;
1410 case OPT_lang_objcplusplus:
1411 CPP_OPTION (pfile, cplusplus) = opt_code == OPT_lang_objcplusplus;
1412 CPP_OPTION (pfile, cplusplus_comments) = 1;
1413 CPP_OPTION (pfile, c89) = 0;
1414 CPP_OPTION (pfile, c99) = 0;
1415 CPP_OPTION (pfile, objc) = 1;
1418 CPP_OPTION (pfile, lang_asm) = 1;
1420 case OPT_lang_fortran:
1421 CPP_OPTION (pfile, lang_fortran) = 1;
1422 CPP_OPTION (pfile, cplusplus_comments) = 0;
1424 case OPT_lang_chill:
1425 CPP_OPTION (pfile, objc) = 0;
1426 CPP_OPTION (pfile, cplusplus) = 0;
1427 CPP_OPTION (pfile, chill) = 1;
1428 CPP_OPTION (pfile, traditional) = 1;
1431 /* -nostdinc causes no default include directories.
1432 You must specify all include-file directories with -I. */
1433 CPP_OPTION (pfile, no_standard_includes) = 1;
1435 case OPT_nostdincplusplus:
1436 /* -nostdinc++ causes no default C++-specific include directories. */
1437 CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
1440 CPP_OPTION (pfile, cplusplus) = 0;
1441 CPP_OPTION (pfile, cplusplus_comments) = 1;
1442 CPP_OPTION (pfile, c89) = 1;
1443 CPP_OPTION (pfile, c99) = 0;
1444 CPP_OPTION (pfile, objc) = 0;
1448 CPP_OPTION (pfile, cplusplus) = 0;
1449 CPP_OPTION (pfile, cplusplus_comments) = 1;
1450 CPP_OPTION (pfile, c89) = 0;
1451 CPP_OPTION (pfile, c99) = 1;
1452 CPP_OPTION (pfile, objc) = 0;
1453 new_pending_directive (CPP_OPTION (pfile, pending),
1454 "__STDC_VERSION__=199901L", cpp_define);
1456 case OPT_std_iso9899_199409:
1457 new_pending_directive (CPP_OPTION (pfile, pending),
1458 "__STDC_VERSION__=199409L", cpp_define);
1460 case OPT_std_iso9899_1990:
1462 CPP_OPTION (pfile, cplusplus) = 0;
1463 CPP_OPTION (pfile, cplusplus_comments) = 0;
1464 CPP_OPTION (pfile, c89) = 1;
1465 CPP_OPTION (pfile, c99) = 0;
1466 CPP_OPTION (pfile, objc) = 0;
1467 CPP_OPTION (pfile, trigraphs) = 1;
1468 new_pending_directive (CPP_OPTION (pfile, pending),
1469 "__STRICT_ANSI__", cpp_define);
1471 case OPT_std_iso9899_199x:
1472 case OPT_std_iso9899_1999:
1475 CPP_OPTION (pfile, cplusplus) = 0;
1476 CPP_OPTION (pfile, cplusplus_comments) = 1;
1477 CPP_OPTION (pfile, c89) = 0;
1478 CPP_OPTION (pfile, c99) = 1;
1479 CPP_OPTION (pfile, objc) = 0;
1480 CPP_OPTION (pfile, trigraphs) = 1;
1481 new_pending_directive (CPP_OPTION (pfile, pending),
1482 "__STRICT_ANSI__", cpp_define);
1483 new_pending_directive (CPP_OPTION (pfile, pending),
1484 "__STDC_VERSION__=199901L", cpp_define);
1487 if (CPP_OPTION (pfile, out_fname) != NULL)
1489 cpp_fatal (pfile, "Output filename specified twice");
1492 CPP_OPTION (pfile, out_fname) = arg;
1493 if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
1494 CPP_OPTION (pfile, out_fname) = "";
1497 fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
1498 #ifdef TARGET_VERSION
1501 fputc ('\n', stderr);
1502 CPP_OPTION (pfile, verbose) = 1;
1504 case OPT_stdin_stdout:
1505 /* JF handle '-' as file name meaning stdin or stdout */
1506 if (CPP_OPTION (pfile, in_fname) == NULL)
1507 CPP_OPTION (pfile, in_fname) = "";
1508 else if (CPP_OPTION (pfile, out_fname) == NULL)
1509 CPP_OPTION (pfile, out_fname) = "";
1512 /* Args to -d specify what parts of macros to dump.
1513 Silently ignore unrecognised options; they may
1514 be aimed at the compiler proper. */
1518 while ((c = *arg++) != '\0')
1522 CPP_OPTION (pfile, dump_macros) = dump_only;
1523 CPP_OPTION (pfile, no_output) = 1;
1526 CPP_OPTION (pfile, dump_macros) = dump_names;
1529 CPP_OPTION (pfile, dump_macros) = dump_definitions;
1532 CPP_OPTION (pfile, dump_includes) = 1;
1537 /* The style of the choices here is a bit mixed.
1538 The chosen scheme is a hybrid of keeping all options in one string
1539 and specifying each option in a separate argument:
1540 -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
1541 -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
1542 -M[M][G][D file]. This is awkward to handle in specs, and is not
1544 /* ??? -MG must be specified in addition to one of -M or -MM.
1545 This can be relaxed in the future without breaking anything.
1546 The converse isn't true. */
1548 /* -MG isn't valid with -MD or -MMD. This is checked for later. */
1550 CPP_OPTION (pfile, print_deps_missing_files) = 1;
1556 if (opt_code == OPT_M || opt_code == OPT_MD)
1557 CPP_OPTION (pfile, print_deps) = 2;
1559 CPP_OPTION (pfile, print_deps) = 1;
1561 /* For -MD and -MMD options, write deps on file named by next arg */
1562 /* For -M and -MM, write deps on standard output
1563 and suppress the usual output. */
1564 if (opt_code == OPT_MD || opt_code == OPT_MMD)
1565 CPP_OPTION (pfile, deps_file) = arg;
1567 CPP_OPTION (pfile, no_output) = 1;
1572 /* -A with an argument beginning with '-' acts as
1573 #unassert on whatever immediately follows the '-'.
1574 If "-" is the whole argument, we eliminate all
1575 predefined macros and assertions, including those
1576 that were specified earlier on the command line.
1577 That way we can get rid of any that were passed
1578 automatically in from GCC. */
1582 struct pending_option *o1, *o2;
1584 o1 = CPP_OPTION (pfile, pending)->directive_head;
1591 CPP_OPTION (pfile, pending)->directive_head = NULL;
1592 CPP_OPTION (pfile, pending)->directive_tail = NULL;
1595 new_pending_directive (CPP_OPTION (pfile, pending),
1596 arg + 1, cpp_unassert);
1599 new_pending_directive (CPP_OPTION (pfile, pending),
1603 new_pending_directive (CPP_OPTION (pfile, pending), arg, cpp_undef);
1605 case OPT_I: /* Add directory to path for includes. */
1606 if (!strcmp (arg, "-"))
1609 Use the preceding -I directories for #include "..."
1610 but not #include <...>.
1611 Don't search the directory of the present file
1612 for #include "...". (Note that -I. -I- is not the same as
1613 the default setup; -I. uses the compiler's working dir.) */
1614 if (! CPP_OPTION (pfile, ignore_srcdir))
1616 struct cpp_pending *pend = CPP_OPTION (pfile, pending);
1617 pend->quote_head = pend->brack_head;
1618 pend->quote_tail = pend->brack_tail;
1619 pend->brack_head = 0;
1620 pend->brack_tail = 0;
1621 CPP_OPTION (pfile, ignore_srcdir) = 1;
1625 cpp_fatal (pfile, "-I- specified twice");
1630 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1631 xstrdup (arg), BRACKET, 0);
1634 /* Add directory to beginning of system include path, as a system
1635 include directory. */
1636 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1637 xstrdup (arg), SYSTEM, 0);
1641 struct pending_option *o = (struct pending_option *)
1642 xmalloc (sizeof (struct pending_option));
1645 /* This list has to be built in reverse order so that
1646 when cpp_start_read pushes all the -include files onto
1647 the buffer stack, they will be scanned in forward order. */
1648 o->next = CPP_OPTION (pfile, pending)->include_head;
1649 CPP_OPTION (pfile, pending)->include_head = o;
1654 struct pending_option *o = (struct pending_option *)
1655 xmalloc (sizeof (struct pending_option));
1659 APPEND (CPP_OPTION (pfile, pending), imacros, o);
1662 case OPT_iwithprefix:
1663 /* Add directory to end of path for includes,
1664 with the default prefix at the front of its name. */
1666 case OPT_iwithprefixbefore:
1667 /* Add directory to main path for includes,
1668 with the default prefix at the front of its name. */
1675 if (CPP_OPTION (pfile, include_prefix) != 0)
1677 size_t ipl = CPP_OPTION (pfile, include_prefix_len);
1678 fname = xmalloc (ipl + len + 1);
1679 memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
1680 memcpy (fname + ipl, arg, len + 1);
1684 fname = xmalloc (sizeof GCC_INCLUDE_DIR - 8 + len);
1685 memcpy (fname, GCC_INCLUDE_DIR, sizeof GCC_INCLUDE_DIR - 9);
1686 memcpy (fname + sizeof GCC_INCLUDE_DIR - 9, arg, len + 1);
1689 append_include_chain (pfile, CPP_OPTION (pfile, pending), fname,
1690 opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
1694 /* Add directory to end of path for includes. */
1695 append_include_chain (pfile, CPP_OPTION (pfile, pending),
1696 xstrdup (arg), AFTER, 0);
1699 /* Silently ignore unrecognised options */
1700 if (!strcmp (argv[i], "-Wall"))
1702 CPP_OPTION (pfile, warn_trigraphs) = 1;
1703 CPP_OPTION (pfile, warn_comments) = 1;
1705 else if (!strcmp (argv[i], "-Wtraditional"))
1706 CPP_OPTION (pfile, warn_traditional) = 1;
1707 else if (!strcmp (argv[i], "-Wtrigraphs"))
1708 CPP_OPTION (pfile, warn_trigraphs) = 1;
1709 else if (!strcmp (argv[i], "-Wcomment"))
1710 CPP_OPTION (pfile, warn_comments) = 1;
1711 else if (!strcmp (argv[i], "-Wcomments"))
1712 CPP_OPTION (pfile, warn_comments) = 1;
1713 else if (!strcmp (argv[i], "-Wundef"))
1714 CPP_OPTION (pfile, warn_undef) = 1;
1715 else if (!strcmp (argv[i], "-Wimport"))
1716 CPP_OPTION (pfile, warn_import) = 1;
1717 else if (!strcmp (argv[i], "-Werror"))
1718 CPP_OPTION (pfile, warnings_are_errors) = 1;
1719 else if (!strcmp (argv[i], "-Wno-traditional"))
1720 CPP_OPTION (pfile, warn_traditional) = 0;
1721 else if (!strcmp (argv[i], "-Wno-trigraphs"))
1722 CPP_OPTION (pfile, warn_trigraphs) = 0;
1723 else if (!strcmp (argv[i], "-Wno-comment"))
1724 CPP_OPTION (pfile, warn_comments) = 0;
1725 else if (!strcmp (argv[i], "-Wno-comments"))
1726 CPP_OPTION (pfile, warn_comments) = 0;
1727 else if (!strcmp (argv[i], "-Wno-undef"))
1728 CPP_OPTION (pfile, warn_undef) = 0;
1729 else if (!strcmp (argv[i], "-Wno-import"))
1730 CPP_OPTION (pfile, warn_import) = 0;
1731 else if (!strcmp (argv[i], "-Wno-error"))
1732 CPP_OPTION (pfile, warnings_are_errors) = 0;
1741 opt_comp (const void *p1, const void *p2)
1743 return strcmp (((struct cl_option *)p1)->opt_text,
1744 ((struct cl_option *)p2)->opt_text);
1748 /* Handle command-line options in (argc, argv).
1749 Can be called multiple times, to handle multiple sets of options.
1750 Returns if an unrecognized option is seen.
1751 Returns number of strings consumed. */
1753 cpp_handle_options (pfile, argc, argv)
1759 int strings_processed;
1762 static int opts_sorted = 0;
1767 /* For non-ASCII hosts, the array needs to be sorted at runtime */
1768 qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
1772 for (i = 0; i < argc; i += strings_processed)
1774 strings_processed = handle_option (pfile, argc - i, argv + i);
1775 if (strings_processed == 0)
1784 fprintf (stderr, _("Usage: %s [switches] input output\n"), progname);
1787 -include <file> Include the contents of <file> before other files\n\
1788 -imacros <file> Accept definition of macros in <file>\n\
1789 -iprefix <path> Specify <path> as a prefix for next two options\n\
1790 -iwithprefix <dir> Add <dir> to the end of the system include path\n\
1791 -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\
1792 -isystem <dir> Add <dir> to the start of the system include path\n\
1793 -idirafter <dir> Add <dir> to the end of the system include path\n\
1794 -I <dir> Add <dir> to the end of the main include path\n\
1795 -I- Fine-grained include path control; see info docs\n\
1796 -nostdinc Do not search system include directories\n\
1797 (dirs specified with -isystem will still be used)\n\
1798 -nostdinc++ Do not search system include directories for C++\n\
1799 -o <file> Put output into <file>\n\
1800 -pedantic Issue all warnings demanded by strict ANSI C\n\
1801 -pedantic-errors Issue -pedantic warnings as errors instead\n\
1802 -traditional Follow K&R pre-processor behaviour\n\
1803 -trigraphs Support ANSI C trigraphs\n\
1804 -lang-c Assume that the input sources are in C\n\
1805 -lang-c89 Assume that the input sources are in C89\n\
1806 -lang-c++ Assume that the input sources are in C++\n\
1807 -lang-objc Assume that the input sources are in ObjectiveC\n\
1808 -lang-objc++ Assume that the input sources are in ObjectiveC++\n\
1809 -lang-asm Assume that the input sources are in assembler\n\
1810 -lang-fortran Assume that the input sources are in Fortran\n\
1811 -lang-chill Assume that the input sources are in Chill\n\
1812 -std=<std name> Specify the conformance standard; one of:\n\
1813 gnu89, gnu99, c89, c99, iso9899:1990,\n\
1814 iso9899:199409, iso9899:1999\n\
1815 -+ Allow parsing of C++ style features\n\
1816 -w Inhibit warning messages\n\
1817 -Wtrigraphs Warn if trigraphs are encountered\n\
1818 -Wno-trigraphs Do not warn about trigraphs\n\
1819 -Wcomment{s} Warn if one comment starts inside another\n\
1820 -Wno-comment{s} Do not warn about comments\n\
1821 -Wtraditional Warn if a macro argument is/would be turned into\n\
1822 a string if -traditional is specified\n\
1823 -Wno-traditional Do not warn about stringification\n\
1824 -Wundef Warn if an undefined macro is used by #if\n\
1825 -Wno-undef Do not warn about testing undefined macros\n\
1826 -Wimport Warn about the use of the #import directive\n\
1827 -Wno-import Do not warn about the use of #import\n\
1828 -Werror Treat all warnings as errors\n\
1829 -Wno-error Do not treat warnings as errors\n\
1830 -Wall Enable all preprocessor warnings\n\
1831 -M Generate make dependencies\n\
1832 -MM As -M, but ignore system header files\n\
1833 -MD As -M, but put output in a .d file\n\
1834 -MMD As -MD, but ignore system header files\n\
1835 -MG Treat missing header file as generated files\n\
1836 -g3 Include #define and #undef directives in the output\n\
1837 -D<macro> Define a <macro> with string '1' as its value\n\
1838 -D<macro>=<val> Define a <macro> with <val> as its value\n\
1839 -A<question> (<answer>) Assert the <answer> to <question>\n\
1840 -A-<question> (<answer>) Disable the <answer> to <question>\n\
1841 -U<macro> Undefine <macro> \n\
1842 -v Display the version number\n\
1843 -H Print the name of header files as they are used\n\
1844 -C Do not discard comments\n\
1845 -dM Display a list of macro definitions active at end\n\
1846 -dD Preserve macro definitions in output\n\
1847 -dN As -dD except that only the names are preserved\n\
1848 -dI Include #include directives in the output\n\
1849 -ftabstop=<number> Distance between tab stops for column reporting\n\
1850 -P Do not generate #line directives\n\
1851 -$ Do not allow '$' in identifiers\n\
1852 -remap Remap file names when including files.\n\
1853 --version Display version information\n\
1854 -h or --help Display this information\n\