| /* CPP Library. |
| Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
| 1999, 2000, 2001, 2002 Free Software Foundation, Inc. |
| Contributed by Per Bothner, 1994-95. |
| Based on CCCP program by Paul Rubin, June 1986 |
| Adapted to ANSI C, Richard Stallman, Jan 1987 |
| |
| This program is free software; you can redistribute it and/or modify it |
| under the terms of the GNU General Public License as published by the |
| Free Software Foundation; either version 2, or (at your option) any |
| later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #include "config.h" |
| #include "system.h" |
| #include "cpplib.h" |
| #include "cpphash.h" |
| #include "prefix.h" |
| #include "intl.h" |
| #include "version.h" |
| #include "mkdeps.h" |
| #include "cppdefault.h" |
| #include "except.h" /* for USING_SJLJ_EXCEPTIONS */ |
| |
| /* Predefined symbols, built-in macros, and the default include path. */ |
| |
| #ifndef GET_ENV_PATH_LIST |
| #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0) |
| #endif |
| |
| /* Windows does not natively support inodes, and neither does MSDOS. |
| Cygwin's emulation can generate non-unique inodes, so don't use it. |
| VMS has non-numeric inodes. */ |
| #ifdef VMS |
| # define INO_T_EQ(A, B) (!memcmp (&(A), &(B), sizeof (A))) |
| # define INO_T_COPY(DEST, SRC) memcpy(&(DEST), &(SRC), sizeof (SRC)) |
| #else |
| # if (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__ |
| # define INO_T_EQ(A, B) 0 |
| # else |
| # define INO_T_EQ(A, B) ((A) == (B)) |
| # endif |
| # define INO_T_COPY(DEST, SRC) (DEST) = (SRC) |
| #endif |
| |
| /* Internal structures and prototypes. */ |
| |
| /* A `struct pending_option' remembers one -D, -A, -U, -include, or |
| -imacros switch. */ |
| typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *)); |
| struct pending_option |
| { |
| struct pending_option *next; |
| const char *arg; |
| cl_directive_handler handler; |
| }; |
| |
| /* The `pending' structure accumulates all the options that are not |
| actually processed until we hit cpp_read_main_file. It consists of |
| several lists, one for each type of option. We keep both head and |
| tail pointers for quick insertion. */ |
| struct cpp_pending |
| { |
| struct pending_option *directive_head, *directive_tail; |
| |
| struct search_path *quote_head, *quote_tail; |
| struct search_path *brack_head, *brack_tail; |
| struct search_path *systm_head, *systm_tail; |
| struct search_path *after_head, *after_tail; |
| |
| struct pending_option *imacros_head, *imacros_tail; |
| struct pending_option *include_head, *include_tail; |
| }; |
| |
| #ifdef __STDC__ |
| #define APPEND(pend, list, elt) \ |
| do { if (!(pend)->list##_head) (pend)->list##_head = (elt); \ |
| else (pend)->list##_tail->next = (elt); \ |
| (pend)->list##_tail = (elt); \ |
| } while (0) |
| #else |
| #define APPEND(pend, list, elt) \ |
| do { if (!(pend)->list/**/_head) (pend)->list/**/_head = (elt); \ |
| else (pend)->list/**/_tail->next = (elt); \ |
| (pend)->list/**/_tail = (elt); \ |
| } while (0) |
| #endif |
| |
| static void print_help PARAMS ((void)); |
| static void path_include PARAMS ((cpp_reader *, |
| char *, int)); |
| static void init_library PARAMS ((void)); |
| static void init_builtins PARAMS ((cpp_reader *)); |
| static void append_include_chain PARAMS ((cpp_reader *, |
| char *, int, int)); |
| static struct search_path * remove_dup_dir PARAMS ((cpp_reader *, |
| struct search_path *)); |
| static struct search_path * remove_dup_dirs PARAMS ((cpp_reader *, |
| struct search_path *)); |
| static void merge_include_chains PARAMS ((cpp_reader *)); |
| static bool push_include PARAMS ((cpp_reader *, |
| struct pending_option *)); |
| static void free_chain PARAMS ((struct pending_option *)); |
| static void set_lang PARAMS ((cpp_reader *, enum c_lang)); |
| static void init_dependency_output PARAMS ((cpp_reader *)); |
| static void init_standard_includes PARAMS ((cpp_reader *)); |
| static void read_original_filename PARAMS ((cpp_reader *)); |
| static void new_pending_directive PARAMS ((struct cpp_pending *, |
| const char *, |
| cl_directive_handler)); |
| static void output_deps PARAMS ((cpp_reader *)); |
| static int parse_option PARAMS ((const char *)); |
| |
| /* Fourth argument to append_include_chain: chain to use. |
| Note it's never asked to append to the quote chain. */ |
| enum { BRACKET = 0, SYSTEM, AFTER }; |
| |
| /* If we have designated initializers (GCC >2.7) these tables can be |
| initialized, constant data. Otherwise, they have to be filled in at |
| runtime. */ |
| #if HAVE_DESIGNATED_INITIALIZERS |
| |
| #define init_trigraph_map() /* Nothing. */ |
| #define TRIGRAPH_MAP \ |
| __extension__ const U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { |
| |
| #define END }; |
| #define s(p, v) [p] = v, |
| |
| #else |
| |
| #define TRIGRAPH_MAP U_CHAR _cpp_trigraph_map[UCHAR_MAX + 1] = { 0 }; \ |
| static void init_trigraph_map PARAMS ((void)) { \ |
| unsigned char *x = _cpp_trigraph_map; |
| |
| #define END } |
| #define s(p, v) x[p] = v; |
| |
| #endif |
| |
| TRIGRAPH_MAP |
| s('=', '#') s(')', ']') s('!', '|') |
| s('(', '[') s('\'', '^') s('>', '}') |
| s('/', '\\') s('<', '{') s('-', '~') |
| END |
| |
| #undef s |
| #undef END |
| #undef TRIGRAPH_MAP |
| |
| /* Given a colon-separated list of file names PATH, |
| add all the names to the search path for include files. */ |
| static void |
| path_include (pfile, list, path) |
| cpp_reader *pfile; |
| char *list; |
| int path; |
| { |
| char *p, *q, *name; |
| |
| p = list; |
| |
| do |
| { |
| /* Find the end of this name. */ |
| q = p; |
| while (*q != 0 && *q != PATH_SEPARATOR) q++; |
| if (q == p) |
| { |
| /* An empty name in the path stands for the current directory. */ |
| name = (char *) xmalloc (2); |
| name[0] = '.'; |
| name[1] = 0; |
| } |
| else |
| { |
| /* Otherwise use the directory that is named. */ |
| name = (char *) xmalloc (q - p + 1); |
| memcpy (name, p, q - p); |
| name[q - p] = 0; |
| } |
| |
| append_include_chain (pfile, name, path, 0); |
| |
| /* Advance past this name. */ |
| if (*q == 0) |
| break; |
| p = q + 1; |
| } |
| while (1); |
| } |
| |
| /* Append DIR to include path PATH. DIR must be allocated on the |
| heap; this routine takes responsibility for freeing it. CXX_AWARE |
| is non-zero if the header contains extern "C" guards for C++, |
| otherwise it is zero. */ |
| static void |
| append_include_chain (pfile, dir, path, cxx_aware) |
| cpp_reader *pfile; |
| char *dir; |
| int path; |
| int cxx_aware ATTRIBUTE_UNUSED; |
| { |
| struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
| struct search_path *new; |
| struct stat st; |
| unsigned int len; |
| |
| if (*dir == '\0') |
| { |
| free (dir); |
| dir = xstrdup ("."); |
| } |
| _cpp_simplify_pathname (dir); |
| |
| if (stat (dir, &st)) |
| { |
| /* Dirs that don't exist are silently ignored. */ |
| if (errno != ENOENT) |
| cpp_notice_from_errno (pfile, dir); |
| else if (CPP_OPTION (pfile, verbose)) |
| fprintf (stderr, _("ignoring nonexistent directory \"%s\"\n"), dir); |
| free (dir); |
| return; |
| } |
| |
| if (!S_ISDIR (st.st_mode)) |
| { |
| cpp_notice (pfile, "%s: Not a directory", dir); |
| free (dir); |
| return; |
| } |
| |
| len = strlen (dir); |
| if (len > pfile->max_include_len) |
| pfile->max_include_len = len; |
| |
| new = (struct search_path *) xmalloc (sizeof (struct search_path)); |
| new->name = dir; |
| new->len = len; |
| INO_T_COPY (new->ino, st.st_ino); |
| new->dev = st.st_dev; |
| /* Both systm and after include file lists should be treated as system |
| include files since these two lists are really just a concatenation |
| of one "system" list. */ |
| if (path == SYSTEM || path == AFTER) |
| #ifdef NO_IMPLICIT_EXTERN_C |
| new->sysp = 1; |
| #else |
| new->sysp = cxx_aware ? 1 : 2; |
| #endif |
| else |
| new->sysp = 0; |
| new->name_map = NULL; |
| new->next = NULL; |
| |
| switch (path) |
| { |
| case BRACKET: APPEND (pend, brack, new); break; |
| case SYSTEM: APPEND (pend, systm, new); break; |
| case AFTER: APPEND (pend, after, new); break; |
| } |
| } |
| |
| /* Handle a duplicated include path. PREV is the link in the chain |
| before the duplicate. The duplicate is removed from the chain and |
| freed. Returns PREV. */ |
| static struct search_path * |
| remove_dup_dir (pfile, prev) |
| cpp_reader *pfile; |
| struct search_path *prev; |
| { |
| struct search_path *cur = prev->next; |
| |
| if (CPP_OPTION (pfile, verbose)) |
| fprintf (stderr, _("ignoring duplicate directory \"%s\"\n"), cur->name); |
| |
| prev->next = cur->next; |
| free ((PTR) cur->name); |
| free (cur); |
| |
| return prev; |
| } |
| |
| /* Remove duplicate directories from a chain. Returns the tail of the |
| chain, or NULL if the chain is empty. This algorithm is quadratic |
| in the number of -I switches, which is acceptable since there |
| aren't usually that many of them. */ |
| static struct search_path * |
| remove_dup_dirs (pfile, head) |
| cpp_reader *pfile; |
| struct search_path *head; |
| { |
| struct search_path *prev = NULL, *cur, *other; |
| |
| for (cur = head; cur; cur = cur->next) |
| { |
| for (other = head; other != cur; other = other->next) |
| if (INO_T_EQ (cur->ino, other->ino) && cur->dev == other->dev) |
| { |
| if (cur->sysp && !other->sysp) |
| { |
| cpp_warning (pfile, |
| "changing search order for system directory \"%s\"", |
| cur->name); |
| if (strcmp (cur->name, other->name)) |
| cpp_warning (pfile, |
| " as it is the same as non-system directory \"%s\"", |
| other->name); |
| else |
| cpp_warning (pfile, |
| " as it has already been specified as a non-system directory"); |
| } |
| cur = remove_dup_dir (pfile, prev); |
| break; |
| } |
| prev = cur; |
| } |
| |
| return prev; |
| } |
| |
| /* Merge the four include chains together in the order quote, bracket, |
| system, after. Remove duplicate dirs (as determined by |
| INO_T_EQ()). The system_include and after_include chains are never |
| referred to again after this function; all access is through the |
| bracket_include path. */ |
| static void |
| merge_include_chains (pfile) |
| cpp_reader *pfile; |
| { |
| struct search_path *quote, *brack, *systm, *qtail; |
| |
| struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
| |
| quote = pend->quote_head; |
| brack = pend->brack_head; |
| systm = pend->systm_head; |
| qtail = pend->quote_tail; |
| |
| /* Paste together bracket, system, and after include chains. */ |
| if (systm) |
| pend->systm_tail->next = pend->after_head; |
| else |
| systm = pend->after_head; |
| |
| if (brack) |
| pend->brack_tail->next = systm; |
| else |
| brack = systm; |
| |
| /* This is a bit tricky. First we drop dupes from the quote-include |
| list. Then we drop dupes from the bracket-include list. |
| Finally, if qtail and brack are the same directory, we cut out |
| brack and move brack up to point to qtail. |
| |
| We can't just merge the lists and then uniquify them because |
| then we may lose directories from the <> search path that should |
| be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however |
| safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written |
| -Ibar -I- -Ifoo -Iquux. */ |
| |
| remove_dup_dirs (pfile, brack); |
| qtail = remove_dup_dirs (pfile, quote); |
| |
| if (quote) |
| { |
| qtail->next = brack; |
| |
| /* If brack == qtail, remove brack as it's simpler. */ |
| if (brack && INO_T_EQ (qtail->ino, brack->ino) |
| && qtail->dev == brack->dev) |
| brack = remove_dup_dir (pfile, qtail); |
| } |
| else |
| quote = brack; |
| |
| CPP_OPTION (pfile, quote_include) = quote; |
| CPP_OPTION (pfile, bracket_include) = brack; |
| } |
| |
| /* A set of booleans indicating what CPP features each source language |
| requires. */ |
| struct lang_flags |
| { |
| char c99; |
| char objc; |
| char cplusplus; |
| char extended_numbers; |
| char trigraphs; |
| char dollars_in_ident; |
| char cplusplus_comments; |
| char digraphs; |
| }; |
| |
| /* ??? Enable $ in identifiers in assembly? */ |
| static const struct lang_flags lang_defaults[] = |
| { /* c99 objc c++ xnum trig dollar c++comm digr */ |
| /* GNUC89 */ { 0, 0, 0, 1, 0, 1, 1, 1 }, |
| /* GNUC99 */ { 1, 0, 0, 1, 0, 1, 1, 1 }, |
| /* STDC89 */ { 0, 0, 0, 0, 1, 0, 0, 0 }, |
| /* STDC94 */ { 0, 0, 0, 0, 1, 0, 0, 1 }, |
| /* STDC99 */ { 1, 0, 0, 1, 1, 0, 1, 1 }, |
| /* GNUCXX */ { 0, 0, 1, 1, 0, 1, 1, 1 }, |
| /* CXX98 */ { 0, 0, 1, 1, 1, 0, 1, 1 }, |
| /* OBJC */ { 0, 1, 0, 1, 0, 1, 1, 1 }, |
| /* OBJCXX */ { 0, 1, 1, 1, 0, 1, 1, 1 }, |
| /* ASM */ { 0, 0, 0, 1, 0, 0, 1, 0 } |
| }; |
| |
| /* Sets internal flags correctly for a given language. */ |
| static void |
| set_lang (pfile, lang) |
| cpp_reader *pfile; |
| enum c_lang lang; |
| { |
| const struct lang_flags *l = &lang_defaults[(int) lang]; |
| |
| CPP_OPTION (pfile, lang) = lang; |
| |
| CPP_OPTION (pfile, c99) = l->c99; |
| CPP_OPTION (pfile, objc) = l->objc; |
| CPP_OPTION (pfile, cplusplus) = l->cplusplus; |
| CPP_OPTION (pfile, extended_numbers) = l->extended_numbers; |
| CPP_OPTION (pfile, trigraphs) = l->trigraphs; |
| CPP_OPTION (pfile, dollars_in_ident) = l->dollars_in_ident; |
| CPP_OPTION (pfile, cplusplus_comments) = l->cplusplus_comments; |
| CPP_OPTION (pfile, digraphs) = l->digraphs; |
| } |
| |
| #ifdef HOST_EBCDIC |
| static int opt_comp PARAMS ((const void *, const void *)); |
| |
| /* Run-time sorting of options array. */ |
| static int |
| opt_comp (p1, p2) |
| const void *p1, *p2; |
| { |
| return strcmp (((struct cl_option *) p1)->opt_text, |
| ((struct cl_option *) p2)->opt_text); |
| } |
| #endif |
| |
| /* init initializes library global state. It might not need to |
| do anything depending on the platform and compiler. */ |
| static void |
| init_library () |
| { |
| static int initialized = 0; |
| |
| if (! initialized) |
| { |
| initialized = 1; |
| |
| #ifdef HOST_EBCDIC |
| /* For non-ASCII hosts, the cl_options array needs to be sorted at |
| runtime. */ |
| qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp); |
| #endif |
| |
| /* Set up the trigraph map. This doesn't need to do anything if |
| we were compiled with a compiler that supports C99 designated |
| initializers. */ |
| init_trigraph_map (); |
| } |
| } |
| |
| /* Initialize a cpp_reader structure. */ |
| cpp_reader * |
| cpp_create_reader (lang) |
| enum c_lang lang; |
| { |
| cpp_reader *pfile; |
| |
| /* Initialise this instance of the library if it hasn't been already. */ |
| init_library (); |
| |
| pfile = (cpp_reader *) xcalloc (1, sizeof (cpp_reader)); |
| |
| set_lang (pfile, lang); |
| CPP_OPTION (pfile, warn_import) = 1; |
| CPP_OPTION (pfile, discard_comments) = 1; |
| CPP_OPTION (pfile, show_column) = 1; |
| CPP_OPTION (pfile, tabstop) = 8; |
| CPP_OPTION (pfile, operator_names) = 1; |
| #if DEFAULT_SIGNED_CHAR |
| CPP_OPTION (pfile, signed_char) = 1; |
| #else |
| CPP_OPTION (pfile, signed_char) = 0; |
| #endif |
| |
| CPP_OPTION (pfile, pending) = |
| (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending)); |
| |
| /* It's simplest to just create this struct whether or not it will |
| be needed. */ |
| pfile->deps = deps_init (); |
| |
| /* Initialise the line map. Start at logical line 1, so we can use |
| a line number of zero for special states. */ |
| init_line_maps (&pfile->line_maps); |
| pfile->line = 1; |
| |
| /* Initialize lexer state. */ |
| pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments); |
| |
| /* Set up static tokens. */ |
| pfile->date.type = CPP_EOF; |
| pfile->avoid_paste.type = CPP_PADDING; |
| pfile->avoid_paste.val.source = NULL; |
| pfile->eof.type = CPP_EOF; |
| pfile->eof.flags = 0; |
| |
| /* Create a token buffer for the lexer. */ |
| _cpp_init_tokenrun (&pfile->base_run, 250); |
| pfile->cur_run = &pfile->base_run; |
| pfile->cur_token = pfile->base_run.base; |
| |
| /* Initialise the base context. */ |
| pfile->context = &pfile->base_context; |
| pfile->base_context.macro = 0; |
| pfile->base_context.prev = pfile->base_context.next = 0; |
| |
| /* Aligned and unaligned storage. */ |
| pfile->a_buff = _cpp_get_buff (pfile, 0); |
| pfile->u_buff = _cpp_get_buff (pfile, 0); |
| |
| /* Initialise the buffer obstack. */ |
| gcc_obstack_init (&pfile->buffer_ob); |
| |
| _cpp_init_includes (pfile); |
| |
| return pfile; |
| } |
| |
| /* Free resources used by PFILE. Accessing PFILE after this function |
| returns leads to undefined behaviour. Returns the error count. */ |
| int |
| cpp_destroy (pfile) |
| cpp_reader *pfile; |
| { |
| int result; |
| struct search_path *dir, *dirn; |
| cpp_context *context, *contextn; |
| tokenrun *run, *runn; |
| |
| while (CPP_BUFFER (pfile) != NULL) |
| _cpp_pop_buffer (pfile); |
| |
| if (pfile->macro_buffer) |
| { |
| free ((PTR) pfile->macro_buffer); |
| pfile->macro_buffer = NULL; |
| pfile->macro_buffer_len = 0; |
| } |
| |
| deps_free (pfile->deps); |
| obstack_free (&pfile->buffer_ob, 0); |
| |
| _cpp_destroy_hashtable (pfile); |
| _cpp_cleanup_includes (pfile); |
| |
| _cpp_free_buff (pfile->a_buff); |
| _cpp_free_buff (pfile->u_buff); |
| _cpp_free_buff (pfile->free_buffs); |
| |
| for (run = &pfile->base_run; run; run = runn) |
| { |
| runn = run->next; |
| free (run->base); |
| if (run != &pfile->base_run) |
| free (run); |
| } |
| |
| for (dir = CPP_OPTION (pfile, quote_include); dir; dir = dirn) |
| { |
| dirn = dir->next; |
| free ((PTR) dir->name); |
| free (dir); |
| } |
| |
| for (context = pfile->base_context.next; context; context = contextn) |
| { |
| contextn = context->next; |
| free (context); |
| } |
| |
| free_line_maps (&pfile->line_maps); |
| |
| result = pfile->errors; |
| free (pfile); |
| |
| return result; |
| } |
| |
| |
| /* This structure defines one built-in identifier. A node will be |
| entered in the hash table under the name NAME, with value VALUE (if |
| any). If flags has OPERATOR, the node's operator field is used; if |
| flags has BUILTIN the node's builtin field is used. Macros that are |
| known at build time should not be flagged BUILTIN, as then they do |
| not appear in macro dumps with e.g. -dM or -dD. |
| |
| Two values are not compile time constants, so we tag |
| them in the FLAGS field instead: |
| VERS value is the global version_string, quoted |
| ULP value is the global user_label_prefix |
| |
| Also, macros with CPLUS set in the flags field are entered only for C++. */ |
| struct builtin |
| { |
| const U_CHAR *name; |
| const char *value; |
| unsigned char builtin; |
| unsigned char operator; |
| unsigned short flags; |
| unsigned short len; |
| }; |
| #define VERS 0x01 |
| #define ULP 0x02 |
| #define CPLUS 0x04 |
| #define BUILTIN 0x08 |
| #define OPERATOR 0x10 |
| |
| #define B(n, t) { U n, 0, t, 0, BUILTIN, sizeof n - 1 } |
| #define C(n, v) { U n, v, 0, 0, 0, sizeof n - 1 } |
| #define X(n, f) { U n, 0, 0, 0, f, sizeof n - 1 } |
| #define O(n, c, f) { U n, 0, 0, c, OPERATOR | f, sizeof n - 1 } |
| static const struct builtin builtin_array[] = |
| { |
| B("__TIME__", BT_TIME), |
| B("__DATE__", BT_DATE), |
| B("__FILE__", BT_FILE), |
| B("__BASE_FILE__", BT_BASE_FILE), |
| B("__LINE__", BT_SPECLINE), |
| B("__INCLUDE_LEVEL__", BT_INCLUDE_LEVEL), |
| B("_Pragma", BT_PRAGMA), |
| |
| X("__VERSION__", VERS), |
| X("__USER_LABEL_PREFIX__", ULP), |
| C("__REGISTER_PREFIX__", REGISTER_PREFIX), |
| C("__HAVE_BUILTIN_SETJMP__", "1"), |
| #if USING_SJLJ_EXCEPTIONS |
| /* libgcc needs to know this. */ |
| C("__USING_SJLJ_EXCEPTIONS__","1"), |
| #endif |
| #ifndef NO_BUILTIN_SIZE_TYPE |
| C("__SIZE_TYPE__", SIZE_TYPE), |
| #endif |
| #ifndef NO_BUILTIN_PTRDIFF_TYPE |
| C("__PTRDIFF_TYPE__", PTRDIFF_TYPE), |
| #endif |
| #ifndef NO_BUILTIN_WCHAR_TYPE |
| C("__WCHAR_TYPE__", WCHAR_TYPE), |
| #endif |
| #ifndef NO_BUILTIN_WINT_TYPE |
| C("__WINT_TYPE__", WINT_TYPE), |
| #endif |
| #ifdef STDC_0_IN_SYSTEM_HEADERS |
| B("__STDC__", BT_STDC), |
| #else |
| C("__STDC__", "1"), |
| #endif |
| |
| /* Named operators known to the preprocessor. These cannot be #defined |
| and always have their stated meaning. They are treated like normal |
| identifiers except for the type code and the meaning. Most of them |
| are only for C++ (but see iso646.h). */ |
| O("and", CPP_AND_AND, CPLUS), |
| O("and_eq", CPP_AND_EQ, CPLUS), |
| O("bitand", CPP_AND, CPLUS), |
| O("bitor", CPP_OR, CPLUS), |
| O("compl", CPP_COMPL, CPLUS), |
| O("not", CPP_NOT, CPLUS), |
| O("not_eq", CPP_NOT_EQ, CPLUS), |
| O("or", CPP_OR_OR, CPLUS), |
| O("or_eq", CPP_OR_EQ, CPLUS), |
| O("xor", CPP_XOR, CPLUS), |
| O("xor_eq", CPP_XOR_EQ, CPLUS) |
| }; |
| #undef B |
| #undef C |
| #undef X |
| #undef O |
| #define builtin_array_end (builtin_array + ARRAY_SIZE (builtin_array)) |
| |
| /* Subroutine of cpp_read_main_file; reads the builtins table above and |
| enters them, and language-specific macros, into the hash table. */ |
| static void |
| init_builtins (pfile) |
| cpp_reader *pfile; |
| { |
| const struct builtin *b; |
| |
| for(b = builtin_array; b < builtin_array_end; b++) |
| { |
| if ((b->flags & CPLUS) && ! CPP_OPTION (pfile, cplusplus)) |
| continue; |
| |
| if ((b->flags & OPERATOR) && ! CPP_OPTION (pfile, operator_names)) |
| continue; |
| |
| if (b->flags & (OPERATOR | BUILTIN)) |
| { |
| cpp_hashnode *hp = cpp_lookup (pfile, b->name, b->len); |
| if (b->flags & OPERATOR) |
| { |
| hp->flags |= NODE_OPERATOR; |
| hp->value.operator = b->operator; |
| } |
| else |
| { |
| hp->type = NT_MACRO; |
| hp->flags |= NODE_BUILTIN | NODE_WARN; |
| hp->value.builtin = b->builtin; |
| } |
| } |
| else /* A standard macro of some kind. */ |
| { |
| const char *val; |
| char *str; |
| |
| if (b->flags & VERS) |
| { |
| /* Allocate enough space for 'name "value"\n\0'. */ |
| str = alloca (b->len + strlen (version_string) + 5); |
| sprintf (str, "%s \"%s\"\n", b->name, version_string); |
| } |
| else |
| { |
| if (b->flags & ULP) |
| val = CPP_OPTION (pfile, user_label_prefix); |
| else |
| val = b->value; |
| |
| /* Allocate enough space for "name value\n\0". */ |
| str = alloca (b->len + strlen (val) + 3); |
| sprintf(str, "%s %s\n", b->name, val); |
| } |
| |
| _cpp_define_builtin (pfile, str); |
| } |
| } |
| |
| if (CPP_OPTION (pfile, cplusplus)) |
| { |
| _cpp_define_builtin (pfile, "__cplusplus 1"); |
| if (SUPPORTS_ONE_ONLY) |
| _cpp_define_builtin (pfile, "__GXX_WEAK__ 1"); |
| else |
| _cpp_define_builtin (pfile, "__GXX_WEAK__ 0"); |
| } |
| if (CPP_OPTION (pfile, objc)) |
| _cpp_define_builtin (pfile, "__OBJC__ 1"); |
| |
| if (CPP_OPTION (pfile, lang) == CLK_STDC94) |
| _cpp_define_builtin (pfile, "__STDC_VERSION__ 199409L"); |
| else if (CPP_OPTION (pfile, c99)) |
| _cpp_define_builtin (pfile, "__STDC_VERSION__ 199901L"); |
| |
| if (CPP_OPTION (pfile, signed_char) == 0) |
| _cpp_define_builtin (pfile, "__CHAR_UNSIGNED__ 1"); |
| |
| if (CPP_OPTION (pfile, lang) == CLK_STDC89 |
| || CPP_OPTION (pfile, lang) == CLK_STDC94 |
| || CPP_OPTION (pfile, lang) == CLK_STDC99) |
| _cpp_define_builtin (pfile, "__STRICT_ANSI__ 1"); |
| else if (CPP_OPTION (pfile, lang) == CLK_ASM) |
| _cpp_define_builtin (pfile, "__ASSEMBLER__ 1"); |
| } |
| #undef BUILTIN |
| #undef OPERATOR |
| #undef VERS |
| #undef ULP |
| #undef CPLUS |
| #undef builtin_array_end |
| |
| /* And another subroutine. This one sets up the standard include path. */ |
| static void |
| init_standard_includes (pfile) |
| cpp_reader *pfile; |
| { |
| char *path; |
| const struct default_include *p; |
| const char *specd_prefix = CPP_OPTION (pfile, include_prefix); |
| |
| /* Several environment variables may add to the include search path. |
| CPATH specifies an additional list of directories to be searched |
| as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH, |
| etc. specify an additional list of directories to be searched as |
| if specified with -isystem, for the language indicated. */ |
| |
| GET_ENV_PATH_LIST (path, "CPATH"); |
| if (path != 0 && *path != 0) |
| path_include (pfile, path, BRACKET); |
| |
| switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus)) |
| { |
| case 0: |
| GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH"); |
| break; |
| case 1: |
| GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH"); |
| break; |
| case 2: |
| GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH"); |
| break; |
| case 3: |
| GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH"); |
| break; |
| } |
| if (path != 0 && *path != 0) |
| path_include (pfile, path, SYSTEM); |
| |
| /* Search "translated" versions of GNU directories. |
| These have /usr/local/lib/gcc... replaced by specd_prefix. */ |
| if (specd_prefix != 0 && cpp_GCC_INCLUDE_DIR_len) |
| { |
| /* Remove the `include' from /usr/local/lib/gcc.../include. |
| GCC_INCLUDE_DIR will always end in /include. */ |
| int default_len = cpp_GCC_INCLUDE_DIR_len; |
| char *default_prefix = (char *) alloca (default_len + 1); |
| int specd_len = strlen (specd_prefix); |
| |
| memcpy (default_prefix, cpp_GCC_INCLUDE_DIR, default_len); |
| default_prefix[default_len] = '\0'; |
| |
| for (p = cpp_include_defaults; p->fname; p++) |
| { |
| /* Some standard dirs are only for C++. */ |
| if (!p->cplusplus |
| || (CPP_OPTION (pfile, cplusplus) |
| && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) |
| { |
| /* Does this dir start with the prefix? */ |
| if (!memcmp (p->fname, default_prefix, default_len)) |
| { |
| /* Yes; change prefix and add to search list. */ |
| int flen = strlen (p->fname); |
| int this_len = specd_len + flen - default_len; |
| char *str = (char *) xmalloc (this_len + 1); |
| memcpy (str, specd_prefix, specd_len); |
| memcpy (str + specd_len, |
| p->fname + default_len, |
| flen - default_len + 1); |
| |
| append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
| } |
| } |
| } |
| } |
| |
| /* Search ordinary names for GNU include directories. */ |
| for (p = cpp_include_defaults; p->fname; p++) |
| { |
| /* Some standard dirs are only for C++. */ |
| if (!p->cplusplus |
| || (CPP_OPTION (pfile, cplusplus) |
| && !CPP_OPTION (pfile, no_standard_cplusplus_includes))) |
| { |
| char *str = update_path (p->fname, p->component); |
| append_include_chain (pfile, str, SYSTEM, p->cxx_aware); |
| } |
| } |
| } |
| |
| /* Pushes a command line -imacro and -include file indicated by P onto |
| the buffer stack. Returns non-zero if successful. */ |
| static bool |
| push_include (pfile, p) |
| cpp_reader *pfile; |
| struct pending_option *p; |
| { |
| cpp_token header; |
| |
| /* Later: maybe update this to use the #include "" search path |
| if cpp_read_file fails. */ |
| header.type = CPP_STRING; |
| header.val.str.text = (const unsigned char *) p->arg; |
| header.val.str.len = strlen (p->arg); |
| /* Make the command line directive take up a line. */ |
| pfile->line++; |
| |
| return _cpp_execute_include (pfile, &header, IT_CMDLINE); |
| } |
| |
| /* Frees a pending_option chain. */ |
| static void |
| free_chain (head) |
| struct pending_option *head; |
| { |
| struct pending_option *next; |
| |
| while (head) |
| { |
| next = head->next; |
| free (head); |
| head = next; |
| } |
| } |
| |
| /* This is called after options have been parsed, and partially |
| processed. Setup for processing input from the file named FNAME, |
| or stdin if it is the empty string. Return the original filename |
| on success (e.g. foo.i->foo.c), or NULL on failure. */ |
| const char * |
| cpp_read_main_file (pfile, fname, table) |
| cpp_reader *pfile; |
| const char *fname; |
| hash_table *table; |
| { |
| /* The front ends don't set up the hash table until they have |
| finished processing the command line options, so initializing the |
| hashtable is deferred until now. */ |
| _cpp_init_hashtable (pfile, table); |
| |
| /* Set up the include search path now. */ |
| if (! CPP_OPTION (pfile, no_standard_includes)) |
| init_standard_includes (pfile); |
| |
| merge_include_chains (pfile); |
| |
| /* With -v, print the list of dirs to search. */ |
| if (CPP_OPTION (pfile, verbose)) |
| { |
| struct search_path *l; |
| fprintf (stderr, _("#include \"...\" search starts here:\n")); |
| for (l = CPP_OPTION (pfile, quote_include); l; l = l->next) |
| { |
| if (l == CPP_OPTION (pfile, bracket_include)) |
| fprintf (stderr, _("#include <...> search starts here:\n")); |
| fprintf (stderr, " %s\n", l->name); |
| } |
| fprintf (stderr, _("End of search list.\n")); |
| } |
| |
| if (CPP_OPTION (pfile, print_deps)) |
| /* Set the default target (if there is none already). */ |
| deps_add_default_target (pfile->deps, fname); |
| |
| /* Open the main input file. */ |
| if (!_cpp_read_file (pfile, fname)) |
| return NULL; |
| |
| /* Set this after cpp_post_options so the client can change the |
| option if it wishes, and after stacking the main file so we don't |
| trace the main file. */ |
| pfile->line_maps.trace_includes = CPP_OPTION (pfile, print_include_names); |
| |
| /* For foo.i, read the original filename foo.c now, for the benefit |
| of the front ends. */ |
| if (CPP_OPTION (pfile, preprocessed)) |
| read_original_filename (pfile); |
| |
| return pfile->map->to_file; |
| } |
| |
| /* For preprocessed files, if the first tokens are of the form # NUM. |
| handle the directive so we know the original file name. This will |
| generate file_change callbacks, which the front ends must handle |
| appropriately given their state of initialization. */ |
| static void |
| read_original_filename (pfile) |
| cpp_reader *pfile; |
| { |
| const cpp_token *token, *token1; |
| |
| /* Lex ahead; if the first tokens are of the form # NUM, then |
| process the directive, otherwise back up. */ |
| token = _cpp_lex_direct (pfile); |
| if (token->type == CPP_HASH) |
| { |
| token1 = _cpp_lex_direct (pfile); |
| _cpp_backup_tokens (pfile, 1); |
| |
| /* If it's a #line directive, handle it. */ |
| if (token1->type == CPP_NUMBER) |
| { |
| _cpp_handle_directive (pfile, token->flags & PREV_WHITE); |
| return; |
| } |
| } |
| |
| /* Backup as if nothing happened. */ |
| _cpp_backup_tokens (pfile, 1); |
| } |
| |
| /* Handle pending command line options: -D, -U, -A, -imacros and |
| -include. This should be called after debugging has been properly |
| set up in the front ends. */ |
| void |
| cpp_finish_options (pfile) |
| cpp_reader *pfile; |
| { |
| /* Install builtins and process command line macros etc. in the order |
| they appeared, but only if not already preprocessed. */ |
| if (! CPP_OPTION (pfile, preprocessed)) |
| { |
| struct pending_option *p; |
| |
| _cpp_do_file_change (pfile, LC_RENAME, _("<built-in>"), 1, 0); |
| init_builtins (pfile); |
| _cpp_do_file_change (pfile, LC_RENAME, _("<command line>"), 1, 0); |
| for (p = CPP_OPTION (pfile, pending)->directive_head; p; p = p->next) |
| (*p->handler) (pfile, p->arg); |
| |
| /* Scan -imacros files after command line defines, but before |
| files given with -include. */ |
| while ((p = CPP_OPTION (pfile, pending)->imacros_head) != NULL) |
| { |
| if (push_include (pfile, p)) |
| { |
| pfile->buffer->return_at_eof = true; |
| cpp_scan_nooutput (pfile); |
| } |
| CPP_OPTION (pfile, pending)->imacros_head = p->next; |
| free (p); |
| } |
| } |
| |
| free_chain (CPP_OPTION (pfile, pending)->directive_head); |
| _cpp_push_next_buffer (pfile); |
| } |
| |
| /* Called to push the next buffer on the stack given by -include. If |
| there are none, free the pending structure and restore the line map |
| for the main file. */ |
| bool |
| _cpp_push_next_buffer (pfile) |
| cpp_reader *pfile; |
| { |
| bool pushed = false; |
| |
| /* This is't pretty; we'd rather not be relying on this as a boolean |
| for reverting the line map. Further, we only free the chains in |
| this conditional, so an early call to cpp_finish / cpp_destroy |
| will leak that memory. */ |
| if (CPP_OPTION (pfile, pending) |
| && CPP_OPTION (pfile, pending)->imacros_head == NULL) |
| { |
| while (!pushed) |
| { |
| struct pending_option *p = CPP_OPTION (pfile, pending)->include_head; |
| |
| if (p == NULL) |
| break; |
| if (! CPP_OPTION (pfile, preprocessed)) |
| pushed = push_include (pfile, p); |
| CPP_OPTION (pfile, pending)->include_head = p->next; |
| free (p); |
| } |
| |
| if (!pushed) |
| { |
| free (CPP_OPTION (pfile, pending)); |
| CPP_OPTION (pfile, pending) = NULL; |
| |
| /* Restore the line map for the main file. */ |
| if (! CPP_OPTION (pfile, preprocessed)) |
| _cpp_do_file_change (pfile, LC_RENAME, |
| pfile->line_maps.maps[0].to_file, 1, 0); |
| } |
| } |
| |
| return pushed; |
| } |
| |
| /* Use mkdeps.c to output dependency information. */ |
| static void |
| output_deps (pfile) |
| cpp_reader *pfile; |
| { |
| /* Stream on which to print the dependency information. */ |
| FILE *deps_stream = 0; |
| const char *const deps_mode = |
| CPP_OPTION (pfile, print_deps_append) ? "a" : "w"; |
| |
| if (CPP_OPTION (pfile, deps_file)[0] == '\0') |
| deps_stream = stdout; |
| else |
| { |
| deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode); |
| if (deps_stream == 0) |
| { |
| cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file)); |
| return; |
| } |
| } |
| |
| deps_write (pfile->deps, deps_stream, 72); |
| |
| if (CPP_OPTION (pfile, deps_phony_targets)) |
| deps_phony_targets (pfile->deps, deps_stream); |
| |
| /* Don't close stdout. */ |
| if (deps_stream != stdout) |
| { |
| if (ferror (deps_stream) || fclose (deps_stream) != 0) |
| cpp_fatal (pfile, "I/O error on output"); |
| } |
| } |
| |
| /* This is called at the end of preprocessing. It pops the |
| last buffer and writes dependency output. It should also |
| clear macro definitions, such that you could call cpp_start_read |
| with a new filename to restart processing. */ |
| void |
| cpp_finish (pfile) |
| cpp_reader *pfile; |
| { |
| /* cpplex.c leaves the final buffer on the stack. This it so that |
| it returns an unending stream of CPP_EOFs to the client. If we |
| popped the buffer, we'd dereference a NULL buffer pointer and |
| segfault. It's nice to allow the client to do worry-free excess |
| cpp_get_token calls. */ |
| while (pfile->buffer) |
| _cpp_pop_buffer (pfile); |
| |
| /* Don't write the deps file if preprocessing has failed. */ |
| if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0) |
| output_deps (pfile); |
| |
| /* Report on headers that could use multiple include guards. */ |
| if (CPP_OPTION (pfile, print_include_names)) |
| _cpp_report_missing_guards (pfile); |
| } |
| |
| /* Add a directive to be handled later in the initialization phase. */ |
| static void |
| new_pending_directive (pend, text, handler) |
| struct cpp_pending *pend; |
| const char *text; |
| cl_directive_handler handler; |
| { |
| struct pending_option *o = (struct pending_option *) |
| xmalloc (sizeof (struct pending_option)); |
| |
| o->arg = text; |
| o->next = NULL; |
| o->handler = handler; |
| APPEND (pend, directive, o); |
| } |
| |
| /* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string"); |
| I.e. a const string initializer with parens around it. That is |
| what N_("string") resolves to, so we make no_* be macros instead. */ |
| #define no_arg N_("argument missing after %s") |
| #define no_ass N_("assertion missing after %s") |
| #define no_dir N_("directory name missing after %s") |
| #define no_fil N_("file name missing after %s") |
| #define no_mac N_("macro name missing after %s") |
| #define no_pth N_("path name missing after %s") |
| #define no_num N_("number missing after %s") |
| #define no_tgt N_("target missing after %s") |
| |
| /* This is the list of all command line options, with the leading |
| "-" removed. It must be sorted in ASCII collating order. */ |
| #define COMMAND_LINE_OPTIONS \ |
| DEF_OPT("$", 0, OPT_dollar) \ |
| DEF_OPT("+", 0, OPT_plus) \ |
| DEF_OPT("-help", 0, OPT__help) \ |
| DEF_OPT("-target-help", 0, OPT_target__help) \ |
| DEF_OPT("-version", 0, OPT__version) \ |
| DEF_OPT("A", no_ass, OPT_A) \ |
| DEF_OPT("C", 0, OPT_C) \ |
| DEF_OPT("D", no_mac, OPT_D) \ |
| DEF_OPT("H", 0, OPT_H) \ |
| DEF_OPT("I", no_dir, OPT_I) \ |
| DEF_OPT("M", 0, OPT_M) \ |
| DEF_OPT("MD", no_fil, OPT_MD) \ |
| DEF_OPT("MF", no_fil, OPT_MF) \ |
| DEF_OPT("MG", 0, OPT_MG) \ |
| DEF_OPT("MM", 0, OPT_MM) \ |
| DEF_OPT("MMD", no_fil, OPT_MMD) \ |
| DEF_OPT("MP", 0, OPT_MP) \ |
| DEF_OPT("MQ", no_tgt, OPT_MQ) \ |
| DEF_OPT("MT", no_tgt, OPT_MT) \ |
| DEF_OPT("P", 0, OPT_P) \ |
| DEF_OPT("U", no_mac, OPT_U) \ |
| DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \ |
| DEF_OPT("d", no_arg, OPT_d) \ |
| DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \ |
| DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \ |
| DEF_OPT("fno-operator-names", 0, OPT_fno_operator_names) \ |
| DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \ |
| DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \ |
| DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \ |
| DEF_OPT("fshow-column", 0, OPT_fshow_column) \ |
| DEF_OPT("fsigned-char", 0, OPT_fsigned_char) \ |
| DEF_OPT("ftabstop=", no_num, OPT_ftabstop) \ |
| DEF_OPT("funsigned-char", 0, OPT_funsigned_char) \ |
| DEF_OPT("h", 0, OPT_h) \ |
| DEF_OPT("idirafter", no_dir, OPT_idirafter) \ |
| DEF_OPT("imacros", no_fil, OPT_imacros) \ |
| DEF_OPT("include", no_fil, OPT_include) \ |
| DEF_OPT("iprefix", no_pth, OPT_iprefix) \ |
| DEF_OPT("isystem", no_dir, OPT_isystem) \ |
| DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \ |
| DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \ |
| DEF_OPT("lang-asm", 0, OPT_lang_asm) \ |
| DEF_OPT("lang-c", 0, OPT_lang_c) \ |
| DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \ |
| DEF_OPT("lang-c89", 0, OPT_lang_c89) \ |
| DEF_OPT("lang-objc", 0, OPT_lang_objc) \ |
| DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \ |
| DEF_OPT("nostdinc", 0, OPT_nostdinc) \ |
| DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \ |
| DEF_OPT("o", no_fil, OPT_o) \ |
| DEF_OPT("pedantic", 0, OPT_pedantic) \ |
| DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \ |
| DEF_OPT("remap", 0, OPT_remap) \ |
| DEF_OPT("std=c++98", 0, OPT_std_cplusplus98) \ |
| DEF_OPT("std=c89", 0, OPT_std_c89) \ |
| DEF_OPT("std=c99", 0, OPT_std_c99) \ |
| DEF_OPT("std=c9x", 0, OPT_std_c9x) \ |
| DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \ |
| DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \ |
| DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \ |
| DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \ |
| DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \ |
| DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \ |
| DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \ |
| DEF_OPT("trigraphs", 0, OPT_trigraphs) \ |
| DEF_OPT("v", 0, OPT_v) \ |
| DEF_OPT("version", 0, OPT_version) \ |
| DEF_OPT("w", 0, OPT_w) |
| |
| #define DEF_OPT(text, msg, code) code, |
| enum opt_code |
| { |
| COMMAND_LINE_OPTIONS |
| N_OPTS |
| }; |
| #undef DEF_OPT |
| |
| struct cl_option |
| { |
| const char *opt_text; |
| const char *msg; |
| size_t opt_len; |
| enum opt_code opt_code; |
| }; |
| |
| #define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code }, |
| #ifdef HOST_EBCDIC |
| static struct cl_option cl_options[] = |
| #else |
| static const struct cl_option cl_options[] = |
| #endif |
| { |
| COMMAND_LINE_OPTIONS |
| }; |
| #undef DEF_OPT |
| #undef COMMAND_LINE_OPTIONS |
| |
| /* Perform a binary search to find which, if any, option the given |
| command-line matches. Returns its index in the option array, |
| negative on failure. Complications arise since some options can be |
| suffixed with an argument, and multiple complete matches can occur, |
| e.g. -iwithprefix and -iwithprefixbefore. Moreover, we need to |
| accept options beginning with -W that we do not recognise, but not |
| to swallow any subsequent command line argument; this is handled as |
| special cases in cpp_handle_option. */ |
| static int |
| parse_option (input) |
| const char *input; |
| { |
| unsigned int md, mn, mx; |
| size_t opt_len; |
| int comp; |
| |
| mn = 0; |
| mx = N_OPTS; |
| |
| while (mx > mn) |
| { |
| md = (mn + mx) / 2; |
| |
| opt_len = cl_options[md].opt_len; |
| comp = memcmp (input, cl_options[md].opt_text, opt_len); |
| |
| if (comp > 0) |
| mn = md + 1; |
| else if (comp < 0) |
| mx = md; |
| else |
| { |
| if (input[opt_len] == '\0') |
| return md; |
| /* We were passed more text. If the option takes an argument, |
| we may match a later option or we may have been passed the |
| argument. The longest possible option match succeeds. |
| If the option takes no arguments we have not matched and |
| continue the search (e.g. input="stdc++" match was "stdc"). */ |
| mn = md + 1; |
| if (cl_options[md].msg) |
| { |
| /* Scan forwards. If we get an exact match, return it. |
| Otherwise, return the longest option-accepting match. |
| This loops no more than twice with current options. */ |
| mx = md; |
| for (; mn < (unsigned int) N_OPTS; mn++) |
| { |
| opt_len = cl_options[mn].opt_len; |
| if (memcmp (input, cl_options[mn].opt_text, opt_len)) |
| break; |
| if (input[opt_len] == '\0') |
| return mn; |
| if (cl_options[mn].msg) |
| mx = mn; |
| } |
| return mx; |
| } |
| } |
| } |
| |
| return -1; |
| } |
| |
| /* Handle one command-line option in (argc, argv). |
| Can be called multiple times, to handle multiple sets of options. |
| If ignore is non-zero, this will ignore unrecognized -W* options. |
| Returns number of strings consumed. */ |
| int |
| cpp_handle_option (pfile, argc, argv, ignore) |
| cpp_reader *pfile; |
| int argc; |
| char **argv; |
| int ignore; |
| { |
| int i = 0; |
| struct cpp_pending *pend = CPP_OPTION (pfile, pending); |
| |
| /* Interpret "-" or a non-option as a file name. */ |
| if (argv[i][0] != '-' || argv[i][1] == '\0') |
| { |
| if (CPP_OPTION (pfile, in_fname) == NULL) |
| CPP_OPTION (pfile, in_fname) = argv[i]; |
| else if (CPP_OPTION (pfile, out_fname) == NULL) |
| CPP_OPTION (pfile, out_fname) = argv[i]; |
| else |
| cpp_fatal (pfile, "too many filenames. Type %s --help for usage info", |
| progname); |
| } |
| else |
| { |
| enum opt_code opt_code; |
| int opt_index; |
| const char *arg = 0; |
| |
| /* Skip over '-'. */ |
| opt_index = parse_option (&argv[i][1]); |
| if (opt_index < 0) |
| return i; |
| |
| opt_code = cl_options[opt_index].opt_code; |
| if (cl_options[opt_index].msg) |
| { |
| arg = &argv[i][cl_options[opt_index].opt_len + 1]; |
| |
| /* Yuk. Special case for -W as it must not swallow |
| up any following argument. If this becomes common, add |
| another field to the cl_options table. */ |
| if (arg[0] == '\0' && opt_code != OPT_W) |
| { |
| arg = argv[++i]; |
| if (!arg) |
| { |
| cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]); |
| return argc; |
| } |
| } |
| } |
| |
| switch (opt_code) |
| { |
| case N_OPTS: /* Shut GCC up. */ |
| break; |
| case OPT_fleading_underscore: |
| CPP_OPTION (pfile, user_label_prefix) = "_"; |
| break; |
| case OPT_fno_leading_underscore: |
| CPP_OPTION (pfile, user_label_prefix) = ""; |
| break; |
| case OPT_fno_operator_names: |
| CPP_OPTION (pfile, operator_names) = 0; |
| break; |
| case OPT_fpreprocessed: |
| CPP_OPTION (pfile, preprocessed) = 1; |
| break; |
| case OPT_fno_preprocessed: |
| CPP_OPTION (pfile, preprocessed) = 0; |
| break; |
| case OPT_fshow_column: |
| CPP_OPTION (pfile, show_column) = 1; |
| break; |
| case OPT_fno_show_column: |
| CPP_OPTION (pfile, show_column) = 0; |
| break; |
| case OPT_fsigned_char: |
| CPP_OPTION (pfile, signed_char) = 1; |
| break; |
| case OPT_funsigned_char: |
| CPP_OPTION (pfile, signed_char) = 0; |
| break; |
| case OPT_ftabstop: |
| /* Silently ignore empty string, non-longs and silly values. */ |
| if (arg[0] != '\0') |
| { |
| char *endptr; |
| long tabstop = strtol (arg, &endptr, 10); |
| if (*endptr == '\0' && tabstop >= 1 && tabstop <= 100) |
| CPP_OPTION (pfile, tabstop) = tabstop; |
| } |
| break; |
| case OPT_w: |
| CPP_OPTION (pfile, inhibit_warnings) = 1; |
| break; |
| case OPT_h: |
| case OPT__help: |
| print_help (); |
| CPP_OPTION (pfile, help_only) = 1; |
| break; |
| case OPT_target__help: |
| /* Print if any target specific options. cpplib has none, but |
| make sure help_only gets set. */ |
| CPP_OPTION (pfile, help_only) = 1; |
| break; |
| |
| /* --version inhibits compilation, -version doesn't. -v means |
| verbose and -version. Historical reasons, don't ask. */ |
| case OPT__version: |
| CPP_OPTION (pfile, help_only) = 1; |
| pfile->print_version = 1; |
| break; |
| case OPT_v: |
| CPP_OPTION (pfile, verbose) = 1; |
| pfile->print_version = 1; |
| break; |
| case OPT_version: |
| pfile->print_version = 1; |
| break; |
| |
| case OPT_C: |
| CPP_OPTION (pfile, discard_comments) = 0; |
| break; |
| case OPT_P: |
| CPP_OPTION (pfile, no_line_commands) = 1; |
| break; |
| case OPT_dollar: /* Don't include $ in identifiers. */ |
| CPP_OPTION (pfile, dollars_in_ident) = 0; |
| break; |
| case OPT_H: |
| CPP_OPTION (pfile, print_include_names) = 1; |
| break; |
| case OPT_D: |
| new_pending_directive (pend, arg, cpp_define); |
| break; |
| case OPT_pedantic_errors: |
| CPP_OPTION (pfile, pedantic_errors) = 1; |
| /* fall through */ |
| case OPT_pedantic: |
| CPP_OPTION (pfile, pedantic) = 1; |
| break; |
| case OPT_trigraphs: |
| CPP_OPTION (pfile, trigraphs) = 1; |
| break; |
| case OPT_plus: |
| CPP_OPTION (pfile, cplusplus) = 1; |
| CPP_OPTION (pfile, cplusplus_comments) = 1; |
| break; |
| case OPT_remap: |
| CPP_OPTION (pfile, remap) = 1; |
| break; |
| case OPT_iprefix: |
| CPP_OPTION (pfile, include_prefix) = arg; |
| CPP_OPTION (pfile, include_prefix_len) = strlen (arg); |
| break; |
| case OPT_lang_c: |
| set_lang (pfile, CLK_GNUC89); |
| break; |
| case OPT_lang_cplusplus: |
| set_lang (pfile, CLK_GNUCXX); |
| break; |
| case OPT_lang_objc: |
| set_lang (pfile, CLK_OBJC); |
| break; |
| case OPT_lang_objcplusplus: |
| set_lang (pfile, CLK_OBJCXX); |
| break; |
| case OPT_lang_asm: |
| set_lang (pfile, CLK_ASM); |
| break; |
| case OPT_std_cplusplus98: |
| set_lang (pfile, CLK_CXX98); |
| break; |
| case OPT_std_gnu89: |
| set_lang (pfile, CLK_GNUC89); |
| break; |
| case OPT_std_gnu9x: |
| case OPT_std_gnu99: |
| set_lang (pfile, CLK_GNUC99); |
| break; |
| case OPT_std_iso9899_199409: |
| set_lang (pfile, CLK_STDC94); |
| break; |
| case OPT_std_iso9899_1990: |
| case OPT_std_c89: |
| case OPT_lang_c89: |
| set_lang (pfile, CLK_STDC89); |
| break; |
| case OPT_std_iso9899_199x: |
| case OPT_std_iso9899_1999: |
| case OPT_std_c9x: |
| case OPT_std_c99: |
| set_lang (pfile, CLK_STDC99); |
| break; |
| case OPT_nostdinc: |
| /* -nostdinc causes no default include directories. |
| You must specify all include-file directories with -I. */ |
| CPP_OPTION (pfile, no_standard_includes) = 1; |
| break; |
| case OPT_nostdincplusplus: |
| /* -nostdinc++ causes no default C++-specific include directories. */ |
| CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1; |
| break; |
| case OPT_o: |
| if (CPP_OPTION (pfile, out_fname) == NULL) |
| CPP_OPTION (pfile, out_fname) = arg; |
| else |
| { |
| cpp_fatal (pfile, "output filename specified twice"); |
| return argc; |
| } |
| break; |
| case OPT_d: |
| /* Args to -d specify what parts of macros to dump. |
| Silently ignore unrecognised options; they may |
| be aimed at the compiler proper. */ |
| { |
| char c; |
| |
| while ((c = *arg++) != '\0') |
| switch (c) |
| { |
| case 'M': |
| CPP_OPTION (pfile, dump_macros) = dump_only; |
| CPP_OPTION (pfile, no_output) = 1; |
| break; |
| case 'N': |
| CPP_OPTION (pfile, dump_macros) = dump_names; |
| break; |
| case 'D': |
| CPP_OPTION (pfile, dump_macros) = dump_definitions; |
| break; |
| case 'I': |
| CPP_OPTION (pfile, dump_includes) = 1; |
| break; |
| } |
| } |
| break; |
| |
| case OPT_MG: |
| CPP_OPTION (pfile, print_deps_missing_files) = 1; |
| break; |
| case OPT_M: |
| CPP_OPTION (pfile, print_deps) = 2; |
| break; |
| case OPT_MM: |
| CPP_OPTION (pfile, print_deps) = 1; |
| break; |
| case OPT_MF: |
| CPP_OPTION (pfile, deps_file) = arg; |
| break; |
| case OPT_MP: |
| CPP_OPTION (pfile, deps_phony_targets) = 1; |
| break; |
| case OPT_MQ: |
| case OPT_MT: |
| /* Add a target. -MQ quotes for Make. */ |
| deps_add_target (pfile->deps, arg, opt_code == OPT_MQ); |
| break; |
| |
| /* -MD and -MMD for cpp0 are deprecated and undocumented |
| (use -M or -MM with -MF instead), and probably should be |
| removed with the next major GCC version. For the moment |
| we allow these for the benefit of Automake 1.4, which |
| uses these when dependency tracking is enabled. Automake |
| 1.5 will fix this. */ |
| case OPT_MD: |
| CPP_OPTION (pfile, print_deps) = 2; |
| CPP_OPTION (pfile, deps_file) = arg; |
| break; |
| case OPT_MMD: |
| CPP_OPTION (pfile, print_deps) = 1; |
| CPP_OPTION (pfile, deps_file) = arg; |
| break; |
| |
| case OPT_A: |
| if (arg[0] == '-') |
| { |
| /* -A with an argument beginning with '-' acts as |
| #unassert on whatever immediately follows the '-'. |
| If "-" is the whole argument, we eliminate all |
| predefined macros and assertions, including those |
| that were specified earlier on the command line. |
| That way we can get rid of any that were passed |
| automatically in from GCC. */ |
| |
| if (arg[1] == '\0') |
| { |
| free_chain (pend->directive_head); |
| pend->directive_head = NULL; |
| pend->directive_tail = NULL; |
| } |
| else |
| new_pending_directive (pend, arg + 1, cpp_unassert); |
| } |
| else |
| new_pending_directive (pend, arg, cpp_assert); |
| break; |
| case OPT_U: |
| new_pending_directive (pend, arg, cpp_undef); |
| break; |
| case OPT_I: /* Add directory to path for includes. */ |
| if (!strcmp (arg, "-")) |
| { |
| /* -I- means: |
| Use the preceding -I directories for #include "..." |
| but not #include <...>. |
| Don't search the directory of the present file |
| for #include "...". (Note that -I. -I- is not the same as |
| the default setup; -I. uses the compiler's working dir.) */ |
| if (! CPP_OPTION (pfile, ignore_srcdir)) |
| { |
| pend->quote_head = pend->brack_head; |
| pend->quote_tail = pend->brack_tail; |
| pend->brack_head = 0; |
| pend->brack_tail = 0; |
| CPP_OPTION (pfile, ignore_srcdir) = 1; |
| } |
| else |
| { |
| cpp_fatal (pfile, "-I- specified twice"); |
| return argc; |
| } |
| } |
| else |
| append_include_chain (pfile, xstrdup (arg), BRACKET, 0); |
| break; |
| case OPT_isystem: |
| /* Add directory to beginning of system include path, as a system |
| include directory. */ |
| append_include_chain (pfile, xstrdup (arg), SYSTEM, 0); |
| break; |
| case OPT_include: |
| case OPT_imacros: |
| { |
| struct pending_option *o = (struct pending_option *) |
| xmalloc (sizeof (struct pending_option)); |
| o->arg = arg; |
| o->next = NULL; |
| |
| if (opt_code == OPT_include) |
| APPEND (pend, include, o); |
| else |
| APPEND (pend, imacros, o); |
| } |
| break; |
| case OPT_iwithprefix: |
| /* Add directory to end of path for includes, |
| with the default prefix at the front of its name. */ |
| /* fall through */ |
| case OPT_iwithprefixbefore: |
| /* Add directory to main path for includes, |
| with the default prefix at the front of its name. */ |
| { |
| char *fname; |
| int len; |
| |
| len = strlen (arg); |
| |
| if (CPP_OPTION (pfile, include_prefix) != 0) |
| { |
| size_t ipl = CPP_OPTION (pfile, include_prefix_len); |
| fname = xmalloc (ipl + len + 1); |
| memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl); |
| memcpy (fname + ipl, arg, len + 1); |
| } |
| else if (cpp_GCC_INCLUDE_DIR_len) |
| { |
| fname = xmalloc (cpp_GCC_INCLUDE_DIR_len + len + 1); |
| memcpy (fname, cpp_GCC_INCLUDE_DIR, cpp_GCC_INCLUDE_DIR_len); |
| memcpy (fname + cpp_GCC_INCLUDE_DIR_len, arg, len + 1); |
| } |
| else |
| fname = xstrdup (arg); |
| |
| append_include_chain (pfile, fname, |
| opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0); |
| } |
| break; |
| case OPT_idirafter: |
| /* Add directory to end of path for includes. */ |
| append_include_chain (pfile, xstrdup (arg), AFTER, 0); |
| break; |
| case OPT_W: |
| /* Silently ignore unrecognised options. */ |
| if (!strcmp (argv[i], "-Wall")) |
| { |
| CPP_OPTION (pfile, warn_trigraphs) = 1; |
| CPP_OPTION (pfile, warn_comments) = 1; |
| } |
| else if (!strcmp (argv[i], "-Wtraditional")) |
| CPP_OPTION (pfile, warn_traditional) = 1; |
| else if (!strcmp (argv[i], "-Wtrigraphs")) |
| CPP_OPTION (pfile, warn_trigraphs) = 1; |
| else if (!strcmp (argv[i], "-Wcomment")) |
| CPP_OPTION (pfile, warn_comments) = 1; |
| else if (!strcmp (argv[i], "-Wcomments")) |
| CPP_OPTION (pfile, warn_comments) = 1; |
| else if (!strcmp (argv[i], "-Wundef")) |
| CPP_OPTION (pfile, warn_undef) = 1; |
| else if (!strcmp (argv[i], "-Wimport")) |
| CPP_OPTION (pfile, warn_import) = 1; |
| else if (!strcmp (argv[i], "-Werror")) |
| CPP_OPTION (pfile, warnings_are_errors) = 1; |
| else if (!strcmp (argv[i], "-Wsystem-headers")) |
| CPP_OPTION (pfile, warn_system_headers) = 1; |
| else if (!strcmp (argv[i], "-Wno-traditional")) |
| CPP_OPTION (pfile, warn_traditional) = 0; |
| else if (!strcmp (argv[i], "-Wno-trigraphs")) |
| CPP_OPTION (pfile, warn_trigraphs) = 0; |
| else if (!strcmp (argv[i], "-Wno-comment")) |
| CPP_OPTION (pfile, warn_comments) = 0; |
| else if (!strcmp (argv[i], "-Wno-comments")) |
| CPP_OPTION (pfile, warn_comments) = 0; |
| else if (!strcmp (argv[i], "-Wno-undef")) |
| CPP_OPTION (pfile, warn_undef) = 0; |
| else if (!strcmp (argv[i], "-Wno-import")) |
| CPP_OPTION (pfile, warn_import) = 0; |
| else if (!strcmp (argv[i], "-Wno-error")) |
| CPP_OPTION (pfile, warnings_are_errors) = 0; |
| else if (!strcmp (argv[i], "-Wno-system-headers")) |
| CPP_OPTION (pfile, warn_system_headers) = 0; |
| else if (! ignore) |
| return i; |
| break; |
| } |
| } |
| return i + 1; |
| } |
| |
| /* Handle command-line options in (argc, argv). |
| Can be called multiple times, to handle multiple sets of options. |
| Returns if an unrecognized option is seen. |
| Returns number of strings consumed. */ |
| int |
| cpp_handle_options (pfile, argc, argv) |
| cpp_reader *pfile; |
| int argc; |
| char **argv; |
| { |
| int i; |
| int strings_processed; |
| |
| for (i = 0; i < argc; i += strings_processed) |
| { |
| strings_processed = cpp_handle_option (pfile, argc - i, argv + i, 1); |
| if (strings_processed == 0) |
| break; |
| } |
| |
| return i; |
| } |
| |
| /* Extra processing when all options are parsed, after all calls to |
| cpp_handle_option[s]. Consistency checks etc. */ |
| void |
| cpp_post_options (pfile) |
| cpp_reader *pfile; |
| { |
| if (pfile->print_version) |
| { |
| fprintf (stderr, _("GNU CPP version %s (cpplib)"), version_string); |
| #ifdef TARGET_VERSION |
| TARGET_VERSION; |
| #endif |
| fputc ('\n', stderr); |
| } |
| |
| /* Canonicalize in_fname and out_fname. We guarantee they are not |
| NULL, and that the empty string represents stdin / stdout. */ |
| if (CPP_OPTION (pfile, in_fname) == NULL |
| || !strcmp (CPP_OPTION (pfile, in_fname), "-")) |
| CPP_OPTION (pfile, in_fname) = ""; |
| |
| if (CPP_OPTION (pfile, out_fname) == NULL |
| || !strcmp (CPP_OPTION (pfile, out_fname), "-")) |
| CPP_OPTION (pfile, out_fname) = ""; |
| |
| /* -Wtraditional is not useful in C++ mode. */ |
| if (CPP_OPTION (pfile, cplusplus)) |
| CPP_OPTION (pfile, warn_traditional) = 0; |
| |
| /* Set this if it hasn't been set already. */ |
| if (CPP_OPTION (pfile, user_label_prefix) == NULL) |
| CPP_OPTION (pfile, user_label_prefix) = USER_LABEL_PREFIX; |
| |
| /* Permanently disable macro expansion if we are rescanning |
| preprocessed text. */ |
| if (CPP_OPTION (pfile, preprocessed)) |
| pfile->state.prevent_expansion = 1; |
| |
| /* We need to do this after option processing and before |
| cpp_start_read, as cppmain.c relies on the options->no_output to |
| set its callbacks correctly before calling cpp_start_read. */ |
| init_dependency_output (pfile); |
| |
| /* After checking the environment variables, check if -M or -MM has |
| not been specified, but other -M options have. */ |
| if (CPP_OPTION (pfile, print_deps) == 0 && |
| (CPP_OPTION (pfile, print_deps_missing_files) |
| || CPP_OPTION (pfile, deps_file) |
| || CPP_OPTION (pfile, deps_phony_targets))) |
| cpp_fatal (pfile, "you must additionally specify either -M or -MM"); |
| } |
| |
| /* Set up dependency-file output. On exit, if print_deps is non-zero |
| then deps_file is not NULL; stdout is the empty string. */ |
| static void |
| init_dependency_output (pfile) |
| cpp_reader *pfile; |
| { |
| char *spec, *s, *output_file; |
| |
| /* Either of two environment variables can specify output of deps. |
| Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET", |
| where OUTPUT_FILE is the file to write deps info to |
| and DEPS_TARGET is the target to mention in the deps. */ |
| |
| if (CPP_OPTION (pfile, print_deps) == 0) |
| { |
| spec = getenv ("DEPENDENCIES_OUTPUT"); |
| if (spec) |
| CPP_OPTION (pfile, print_deps) = 1; |
| else |
| { |
| spec = getenv ("SUNPRO_DEPENDENCIES"); |
| if (spec) |
| CPP_OPTION (pfile, print_deps) = 2; |
| else |
| return; |
| } |
| |
| /* Find the space before the DEPS_TARGET, if there is one. */ |
| s = strchr (spec, ' '); |
| if (s) |
| { |
| /* Let the caller perform MAKE quoting. */ |
| deps_add_target (pfile->deps, s + 1, 0); |
| output_file = (char *) xmalloc (s - spec + 1); |
| memcpy (output_file, spec, s - spec); |
| output_file[s - spec] = 0; |
| } |
| else |
| output_file = spec; |
| |
| /* Command line -MF overrides environment variables and default. */ |
| if (CPP_OPTION (pfile, deps_file) == 0) |
| CPP_OPTION (pfile, deps_file) = output_file; |
| |
| CPP_OPTION (pfile, print_deps_append) = 1; |
| } |
| else if (CPP_OPTION (pfile, deps_file) == 0) |
| /* If -M or -MM was seen, default output to wherever was specified |
| with -o. out_fname is non-NULL here. */ |
| CPP_OPTION (pfile, deps_file) = CPP_OPTION (pfile, out_fname); |
| |
| /* When doing dependencies, we should suppress all output, including |
| -dM, -dI etc. */ |
| CPP_OPTION (pfile, no_output) = 1; |
| CPP_OPTION (pfile, dump_macros) = 0; |
| CPP_OPTION (pfile, dump_includes) = 0; |
| } |
| |
| /* Handle --help output. */ |
| static void |
| print_help () |
| { |
| fprintf (stderr, _("Usage: %s [switches] input output\n"), progname); |
| /* To keep the lines from getting too long for some compilers, limit |
| to about 500 characters (6 lines) per chunk. */ |
| fputs (_("\ |
| Switches:\n\ |
| -include <file> Include the contents of <file> before other files\n\ |
| -imacros <file> Accept definition of macros in <file>\n\ |
| -iprefix <path> Specify <path> as a prefix for next two options\n\ |
| -iwithprefix <dir> Add <dir> to the end of the system include path\n\ |
| -iwithprefixbefore <dir> Add <dir> to the end of the main include path\n\ |
| -isystem <dir> Add <dir> to the start of the system include path\n\ |
| "), stdout); |
| fputs (_("\ |
| -idirafter <dir> Add <dir> to the end of the system include path\n\ |
| -I <dir> Add <dir> to the end of the main include path\n\ |
| -I- Fine-grained include path control; see info docs\n\ |
| -nostdinc Do not search system include directories\n\ |
| (dirs specified with -isystem will still be used)\n\ |
| -nostdinc++ Do not search system include directories for C++\n\ |
| -o <file> Put output into <file>\n\ |
| "), stdout); |
| fputs (_("\ |
| -pedantic Issue all warnings demanded by strict ISO C\n\ |
| -pedantic-errors Issue -pedantic warnings as errors instead\n\ |
| -trigraphs Support ISO C trigraphs\n\ |
| -lang-c Assume that the input sources are in C\n\ |
| -lang-c89 Assume that the input sources are in C89\n\ |
| "), stdout); |
| fputs (_("\ |
| -lang-c++ Assume that the input sources are in C++\n\ |
| -lang-objc Assume that the input sources are in ObjectiveC\n\ |
| -lang-objc++ Assume that the input sources are in ObjectiveC++\n\ |
| -lang-asm Assume that the input sources are in assembler\n\ |
| "), stdout); |
| fputs (_("\ |
| -std=<std name> Specify the conformance standard; one of:\n\ |
| gnu89, gnu99, c89, c99, iso9899:1990,\n\ |
| iso9899:199409, iso9899:1999\n\ |
| -+ Allow parsing of C++ style features\n\ |
| -w Inhibit warning messages\n\ |
| -Wtrigraphs Warn if trigraphs are encountered\n\ |
| -Wno-trigraphs Do not warn about trigraphs\n\ |
| -Wcomment{s} Warn if one comment starts inside another\n\ |
| "), stdout); |
| fputs (_("\ |
| -Wno-comment{s} Do not warn about comments\n\ |
| -Wtraditional Warn about features not present in traditional C\n\ |
| -Wno-traditional Do not warn about traditional C\n\ |
| -Wundef Warn if an undefined macro is used by #if\n\ |
| -Wno-undef Do not warn about testing undefined macros\n\ |
| -Wimport Warn about the use of the #import directive\n\ |
| "), stdout); |
| fputs (_("\ |
| -Wno-import Do not warn about the use of #import\n\ |
| -Werror Treat all warnings as errors\n\ |
| -Wno-error Do not treat warnings as errors\n\ |
| -Wsystem-headers Do not suppress warnings from system headers\n\ |
| -Wno-system-headers Suppress warnings from system headers\n\ |
| -Wall Enable all preprocessor warnings\n\ |
| "), stdout); |
| fputs (_("\ |
| -M Generate make dependencies\n\ |
| -MM As -M, but ignore system header files\n\ |
| -MF <file> Write dependency output to the given file\n\ |
| -MG Treat missing header file as generated files\n\ |
| "), stdout); |
| fputs (_("\ |
| -MP Generate phony targets for all headers\n\ |
| -MQ <target> Add a MAKE-quoted target\n\ |
| -MT <target> Add an unquoted target\n\ |
| "), stdout); |
| fputs (_("\ |
| -D<macro> Define a <macro> with string '1' as its value\n\ |
| -D<macro>=<val> Define a <macro> with <val> as its value\n\ |
| -A<question> (<answer>) Assert the <answer> to <question>\n\ |
| -A-<question> (<answer>) Disable the <answer> to <question>\n\ |
| -U<macro> Undefine <macro> \n\ |
| -v Display the version number\n\ |
| "), stdout); |
| fputs (_("\ |
| -H Print the name of header files as they are used\n\ |
| -C Do not discard comments\n\ |
| -dM Display a list of macro definitions active at end\n\ |
| -dD Preserve macro definitions in output\n\ |
| -dN As -dD except that only the names are preserved\n\ |
| -dI Include #include directives in the output\n\ |
| "), stdout); |
| fputs (_("\ |
| -fpreprocessed Treat the input file as already preprocessed\n\ |
| -ftabstop=<number> Distance between tab stops for column reporting\n\ |
| -P Do not generate #line directives\n\ |
| -$ Do not allow '$' in identifiers\n\ |
| -remap Remap file names when including files.\n\ |
| --version Display version information\n\ |
| -h or --help Display this information\n\ |
| "), stdout); |
| } |