1/* Compiler driver program that can handle many languages. 2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, 4 Inc. 5 6This file is part of GCC. 7 8GCC is free software; you can redistribute it and/or modify it under 9the terms of the GNU General Public License as published by the Free 10Software Foundation; either version 2, or (at your option) any later 11version. 12 13GCC is distributed in the hope that it will be useful, but WITHOUT ANY 14WARRANTY; without even the implied warranty of MERCHANTABILITY or 15FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16for more details. 17 18You should have received a copy of the GNU General Public License 19along with GCC; see the file COPYING. If not, write to the Free 20Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 2102110-1301, USA. 22 23This paragraph is here to try to keep Sun CC from dying. 24The number of chars here seems crucial!!!! */ 25 26/* This program is the user interface to the C compiler and possibly to 27other compilers. It is used because compilation is a complicated procedure 28which involves running several programs and passing temporary files between 29them, forwarding the users switches to those programs selectively, 30and deleting the temporary files at the end. 31 32CC recognizes how to compile each input file by suffixes in the file names. 33Once it knows which kind of compilation to perform, the procedure for 34compilation is specified by a string called a "spec". */ 35 36/* A Short Introduction to Adding a Command-Line Option. 37 38 Before adding a command-line option, consider if it is really 39 necessary. Each additional command-line option adds complexity and 40 is difficult to remove in subsequent versions. 41 42 In the following, consider adding the command-line argument 43 `--bar'. 44 45 1. Each command-line option is specified in the specs file. The 46 notation is described below in the comment entitled "The Specs 47 Language". Read it. 48 49 2. In this file, add an entry to "option_map" equating the long 50 `--' argument version and any shorter, single letter version. Read 51 the comments in the declaration of "struct option_map" for an 52 explanation. Do not omit the first `-'. 53 54 3. Look in the "specs" file to determine which program or option 55 list should be given the argument, e.g., "cc1_options". Add the 56 appropriate syntax for the shorter option version to the 57 corresponding "const char *" entry in this file. Omit the first 58 `-' from the option. For example, use `-bar', rather than `--bar'. 59 60 4. If the argument takes an argument, e.g., `--baz argument1', 61 modify either DEFAULT_SWITCH_TAKES_ARG or 62 DEFAULT_WORD_SWITCH_TAKES_ARG in gcc.h. Omit the first `-' 63 from `--baz'. 64 65 5. Document the option in this file's display_help(). If the 66 option is passed to a subprogram, modify its corresponding 67 function, e.g., cppinit.c:print_help() or toplev.c:display_help(), 68 instead. 69 70 6. Compile and test. Make sure that your new specs file is being 71 read. For example, use a debugger to investigate the value of 72 "specs_file" in main(). */ 73 74#include "config.h" 75#include "system.h" 76#include "coretypes.h" 77#include "multilib.h" /* before tm.h */ 78#include "tm.h" 79#include <signal.h> 80#if ! defined( SIGCHLD ) && defined( SIGCLD ) 81# define SIGCHLD SIGCLD 82#endif 83#include "xregex.h" 84#include "obstack.h" 85#include "intl.h" 86#include "prefix.h" 87#include "gcc.h" 88#include "flags.h" 89#include "opts.h" 90 91/* By default there is no special suffix for target executables. */ 92/* FIXME: when autoconf is fixed, remove the host check - dj */ 93#if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX) 94#define HAVE_TARGET_EXECUTABLE_SUFFIX 95#endif 96 97/* By default there is no special suffix for host executables. */ 98#ifdef HOST_EXECUTABLE_SUFFIX 99#define HAVE_HOST_EXECUTABLE_SUFFIX 100#else 101#define HOST_EXECUTABLE_SUFFIX "" 102#endif 103 104/* By default, the suffix for target object files is ".o". */ 105#ifdef TARGET_OBJECT_SUFFIX 106#define HAVE_TARGET_OBJECT_SUFFIX 107#else 108#define TARGET_OBJECT_SUFFIX ".o" 109#endif 110 111static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; 112 113/* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */ 114#ifndef LIBRARY_PATH_ENV 115#define LIBRARY_PATH_ENV "LIBRARY_PATH" 116#endif 117 118#ifndef HAVE_KILL 119#define kill(p,s) raise(s) 120#endif 121 122/* If a stage of compilation returns an exit status >= 1, 123 compilation of that file ceases. */ 124 125#define MIN_FATAL_STATUS 1 126 127/* Flag set by cppspec.c to 1. */ 128int is_cpp_driver; 129 130/* Flag saying to pass the greatest exit code returned by a sub-process 131 to the calling program. */ 132static int pass_exit_codes; 133 134/* Definition of string containing the arguments given to configure. */ 135#include "configargs.h" 136 137/* Flag saying to print the directories gcc will search through looking for 138 programs, libraries, etc. */ 139 140static int print_search_dirs; 141 142/* Flag saying to print the full filename of this file 143 as found through our usual search mechanism. */ 144 145static const char *print_file_name = NULL; 146 147/* As print_file_name, but search for executable file. */ 148 149static const char *print_prog_name = NULL; 150 151/* Flag saying to print the relative path we'd use to 152 find libgcc.a given the current compiler flags. */ 153 154static int print_multi_directory; 155 156/* Flag saying to print the relative path we'd use to 157 find OS libraries given the current compiler flags. */ 158 159static int print_multi_os_directory; 160 161/* Flag saying to print the list of subdirectories and 162 compiler flags used to select them in a standard form. */ 163 164static int print_multi_lib; 165 166/* Flag saying to print the command line options understood by gcc and its 167 sub-processes. */ 168 169static int print_help_list; 170 171/* Flag indicating whether we should print the command and arguments */ 172 173static int verbose_flag; 174 175/* Flag indicating whether we should ONLY print the command and 176 arguments (like verbose_flag) without executing the command. 177 Displayed arguments are quoted so that the generated command 178 line is suitable for execution. This is intended for use in 179 shell scripts to capture the driver-generated command line. */ 180static int verbose_only_flag; 181 182/* Flag indicating to print target specific command line options. */ 183 184static int target_help_flag; 185 186/* Flag indicating whether we should report subprocess execution times 187 (if this is supported by the system - see pexecute.c). */ 188 189static int report_times; 190 191/* Nonzero means place this string before uses of /, so that include 192 and library files can be found in an alternate location. */ 193 194#ifdef TARGET_SYSTEM_ROOT 195static const char *target_system_root = TARGET_SYSTEM_ROOT; 196#else 197static const char *target_system_root = 0; 198#endif 199 200/* Nonzero means pass the updated target_system_root to the compiler. */ 201 202static int target_system_root_changed; 203 204/* Nonzero means append this string to target_system_root. */ 205 206static const char *target_sysroot_suffix = 0; 207 208/* Nonzero means append this string to target_system_root for headers. */ 209 210static const char *target_sysroot_hdrs_suffix = 0; 211 212/* Nonzero means write "temp" files in source directory 213 and use the source file's name in them, and don't delete them. */ 214 215static int save_temps_flag; 216 217/* Nonzero means pass multiple source files to the compiler at one time. */ 218 219static int combine_flag = 0; 220 221/* Nonzero means use pipes to communicate between subprocesses. 222 Overridden by either of the above two flags. */ 223 224static int use_pipes; 225 226/* The compiler version. */ 227 228static const char *compiler_version; 229 230/* The target version specified with -V */ 231 232static const char *const spec_version = DEFAULT_TARGET_VERSION; 233 234/* The target machine specified with -b. */ 235 236static const char *spec_machine = DEFAULT_TARGET_MACHINE; 237 238/* Nonzero if cross-compiling. 239 When -b is used, the value comes from the `specs' file. */ 240 241#ifdef CROSS_COMPILE 242static const char *cross_compile = "1"; 243#else 244static const char *cross_compile = "0"; 245#endif 246 247#ifdef MODIFY_TARGET_NAME 248 249/* Information on how to alter the target name based on a command-line 250 switch. The only case we support now is simply appending or deleting a 251 string to or from the end of the first part of the configuration name. */ 252 253static const struct modify_target 254{ 255 const char *const sw; 256 const enum add_del {ADD, DELETE} add_del; 257 const char *const str; 258} 259modify_target[] = MODIFY_TARGET_NAME; 260#endif 261 262/* The number of errors that have occurred; the link phase will not be 263 run if this is nonzero. */ 264static int error_count = 0; 265 266/* Greatest exit code of sub-processes that has been encountered up to 267 now. */ 268static int greatest_status = 1; 269 270/* This is the obstack which we use to allocate many strings. */ 271 272static struct obstack obstack; 273 274/* This is the obstack to build an environment variable to pass to 275 collect2 that describes all of the relevant switches of what to 276 pass the compiler in building the list of pointers to constructors 277 and destructors. */ 278 279static struct obstack collect_obstack; 280 281/* Forward declaration for prototypes. */ 282struct path_prefix; 283struct prefix_list; 284 285static void init_spec (void); 286static void store_arg (const char *, int, int); 287static char *load_specs (const char *); 288static void read_specs (const char *, int); 289static void set_spec (const char *, const char *); 290static struct compiler *lookup_compiler (const char *, size_t, const char *); 291static char *build_search_list (const struct path_prefix *, const char *, 292 bool, bool); 293static void putenv_from_prefixes (const struct path_prefix *, const char *, 294 bool); 295static int access_check (const char *, int); 296static char *find_a_file (const struct path_prefix *, const char *, int, bool); 297static void add_prefix (struct path_prefix *, const char *, const char *, 298 int, int, int); 299static void add_sysrooted_prefix (struct path_prefix *, const char *, 300 const char *, int, int, int); 301static void translate_options (int *, const char *const **); 302static char *skip_whitespace (char *); 303static void delete_if_ordinary (const char *); 304static void delete_temp_files (void); 305static void delete_failure_queue (void); 306static void clear_failure_queue (void); 307static int check_live_switch (int, int); 308static const char *handle_braces (const char *); 309static inline bool input_suffix_matches (const char *, const char *); 310static inline bool switch_matches (const char *, const char *, int); 311static inline void mark_matching_switches (const char *, const char *, int); 312static inline void process_marked_switches (void); 313static const char *process_brace_body (const char *, const char *, const char *, int, int); 314static const struct spec_function *lookup_spec_function (const char *); 315static const char *eval_spec_function (const char *, const char *); 316static const char *handle_spec_function (const char *); 317static char *save_string (const char *, int); 318static void set_collect_gcc_options (void); 319static int do_spec_1 (const char *, int, const char *); 320static int do_spec_2 (const char *); 321static void do_option_spec (const char *, const char *); 322static void do_self_spec (const char *); 323static const char *find_file (const char *); 324static int is_directory (const char *, bool); 325static const char *validate_switches (const char *); 326static void validate_all_switches (void); 327static inline void validate_switches_from_spec (const char *); 328static void give_switch (int, int); 329static int used_arg (const char *, int); 330static int default_arg (const char *, int); 331static void set_multilib_dir (void); 332static void print_multilib_info (void); 333static void perror_with_name (const char *); 334static void fatal_ice (const char *, ...) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN; 335static void notice (const char *, ...) ATTRIBUTE_PRINTF_1; 336static void display_help (void); 337static void add_preprocessor_option (const char *, int); 338static void add_assembler_option (const char *, int); 339static void add_linker_option (const char *, int); 340static void process_command (int, const char **); 341static int execute (void); 342static void alloc_args (void); 343static void clear_args (void); 344static void fatal_error (int); 345#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) 346static void init_gcc_specs (struct obstack *, const char *, const char *, 347 const char *); 348#endif 349#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 350static const char *convert_filename (const char *, int, int); 351#endif 352 353static const char *if_exists_spec_function (int, const char **); 354static const char *if_exists_else_spec_function (int, const char **); 355static const char *replace_outfile_spec_function (int, const char **); 356static const char *version_compare_spec_function (int, const char **); 357static const char *include_spec_function (int, const char **); 358 359/* The Specs Language 360 361Specs are strings containing lines, each of which (if not blank) 362is made up of a program name, and arguments separated by spaces. 363The program name must be exact and start from root, since no path 364is searched and it is unreliable to depend on the current working directory. 365Redirection of input or output is not supported; the subprograms must 366accept filenames saying what files to read and write. 367 368In addition, the specs can contain %-sequences to substitute variable text 369or for conditional text. Here is a table of all defined %-sequences. 370Note that spaces are not generated automatically around the results of 371expanding these sequences; therefore, you can concatenate them together 372or with constant text in a single argument. 373 374 %% substitute one % into the program name or argument. 375 %i substitute the name of the input file being processed. 376 %b substitute the basename of the input file being processed. 377 This is the substring up to (and not including) the last period 378 and not including the directory. 379 %B same as %b, but include the file suffix (text after the last period). 380 %gSUFFIX 381 substitute a file name that has suffix SUFFIX and is chosen 382 once per compilation, and mark the argument a la %d. To reduce 383 exposure to denial-of-service attacks, the file name is now 384 chosen in a way that is hard to predict even when previously 385 chosen file names are known. For example, `%g.s ... %g.o ... %g.s' 386 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches 387 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it 388 had been pre-processed. Previously, %g was simply substituted 389 with a file name chosen once per compilation, without regard 390 to any appended suffix (which was therefore treated just like 391 ordinary text), making such attacks more likely to succeed. 392 %|SUFFIX 393 like %g, but if -pipe is in effect, expands simply to "-". 394 %mSUFFIX 395 like %g, but if -pipe is in effect, expands to nothing. (We have both 396 %| and %m to accommodate differences between system assemblers; see 397 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.) 398 %uSUFFIX 399 like %g, but generates a new temporary file name even if %uSUFFIX 400 was already seen. 401 %USUFFIX 402 substitutes the last file name generated with %uSUFFIX, generating a 403 new one if there is no such last file name. In the absence of any 404 %uSUFFIX, this is just like %gSUFFIX, except they don't share 405 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s' 406 would involve the generation of two distinct file names, one 407 for each `%g.s' and another for each `%U.s'. Previously, %U was 408 simply substituted with a file name chosen for the previous %u, 409 without regard to any appended suffix. 410 %jSUFFIX 411 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is 412 writable, and if save-temps is off; otherwise, substitute the name 413 of a temporary file, just like %u. This temporary file is not 414 meant for communication between processes, but rather as a junk 415 disposal mechanism. 416 %.SUFFIX 417 substitutes .SUFFIX for the suffixes of a matched switch's args when 418 it is subsequently output with %*. SUFFIX is terminated by the next 419 space or %. 420 %d marks the argument containing or following the %d as a 421 temporary file name, so that that file will be deleted if CC exits 422 successfully. Unlike %g, this contributes no text to the argument. 423 %w marks the argument containing or following the %w as the 424 "output file" of this compilation. This puts the argument 425 into the sequence of arguments that %o will substitute later. 426 %V indicates that this compilation produces no "output file". 427 %W{...} 428 like %{...} but mark last argument supplied within 429 as a file to be deleted on failure. 430 %o substitutes the names of all the output files, with spaces 431 automatically placed around them. You should write spaces 432 around the %o as well or the results are undefined. 433 %o is for use in the specs for running the linker. 434 Input files whose names have no recognized suffix are not compiled 435 at all, but they are included among the output files, so they will 436 be linked. 437 %O substitutes the suffix for object files. Note that this is 438 handled specially when it immediately follows %g, %u, or %U 439 (with or without a suffix argument) because of the need for 440 those to form complete file names. The handling is such that 441 %O is treated exactly as if it had already been substituted, 442 except that %g, %u, and %U do not currently support additional 443 SUFFIX characters following %O as they would following, for 444 example, `.o'. 445 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot 446 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH 447 and -B options) and -imultilib as necessary. 448 %s current argument is the name of a library or startup file of some sort. 449 Search for that file in a standard list of directories 450 and substitute the full name found. 451 %eSTR Print STR as an error message. STR is terminated by a newline. 452 Use this when inconsistent options are detected. 453 %nSTR Print STR as a notice. STR is terminated by a newline. 454 %x{OPTION} Accumulate an option for %X. 455 %X Output the accumulated linker options specified by compilations. 456 %Y Output the accumulated assembler options specified by compilations. 457 %Z Output the accumulated preprocessor options specified by compilations. 458 %a process ASM_SPEC as a spec. 459 This allows config.h to specify part of the spec for running as. 460 %A process ASM_FINAL_SPEC as a spec. A capital A is actually 461 used here. This can be used to run a post-processor after the 462 assembler has done its job. 463 %D Dump out a -L option for each directory in startfile_prefixes. 464 If multilib_dir is set, extra entries are generated with it affixed. 465 %l process LINK_SPEC as a spec. 466 %L process LIB_SPEC as a spec. 467 %G process LIBGCC_SPEC as a spec. 468 %R Output the concatenation of target_system_root and 469 target_sysroot_suffix. 470 %S process STARTFILE_SPEC as a spec. A capital S is actually used here. 471 %E process ENDFILE_SPEC as a spec. A capital E is actually used here. 472 %C process CPP_SPEC as a spec. 473 %1 process CC1_SPEC as a spec. 474 %2 process CC1PLUS_SPEC as a spec. 475 %* substitute the variable part of a matched option. (See below.) 476 Note that each comma in the substituted string is replaced by 477 a single space. 478 %<S remove all occurrences of -S from the command line. 479 Note - this command is position dependent. % commands in the 480 spec string before this one will see -S, % commands in the 481 spec string after this one will not. 482 %<S* remove all occurrences of all switches beginning with -S from the 483 command line. 484 %:function(args) 485 Call the named function FUNCTION, passing it ARGS. ARGS is 486 first processed as a nested spec string, then split into an 487 argument vector in the usual fashion. The function returns 488 a string which is processed as if it had appeared literally 489 as part of the current spec. 490 %{S} substitutes the -S switch, if that switch was given to CC. 491 If that switch was not specified, this substitutes nothing. 492 Here S is a metasyntactic variable. 493 %{S*} substitutes all the switches specified to CC whose names start 494 with -S. This is used for -o, -I, etc; switches that take 495 arguments. CC considers `-o foo' as being one switch whose 496 name starts with `o'. %{o*} would substitute this text, 497 including the space; thus, two arguments would be generated. 498 %{S*&T*} likewise, but preserve order of S and T options (the order 499 of S and T in the spec is not significant). Can be any number 500 of ampersand-separated variables; for each the wild card is 501 optional. Useful for CPP as %{D*&U*&A*}. 502 503 %{S:X} substitutes X, if the -S switch was given to CC. 504 %{!S:X} substitutes X, if the -S switch was NOT given to CC. 505 %{S*:X} substitutes X if one or more switches whose names start 506 with -S was given to CC. Normally X is substituted only 507 once, no matter how many such switches appeared. However, 508 if %* appears somewhere in X, then X will be substituted 509 once for each matching switch, with the %* replaced by the 510 part of that switch that matched the '*'. 511 %{.S:X} substitutes X, if processing a file with suffix S. 512 %{!.S:X} substitutes X, if NOT processing a file with suffix S. 513 514 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be 515 combined with !, ., and * as above binding stronger than the OR. 516 If %* appears in X, all of the alternatives must be starred, and 517 only the first matching alternative is substituted. 518 %{S:X; if S was given to CC, substitutes X; 519 T:Y; else if T was given to CC, substitutes Y; 520 :D} else substitutes D. There can be as many clauses as you need. 521 This may be combined with ., !, |, and * as above. 522 523 %(Spec) processes a specification defined in a specs file as *Spec: 524 %[Spec] as above, but put __ around -D arguments 525 526The conditional text X in a %{S:X} or similar construct may contain 527other nested % constructs or spaces, or even newlines. They are 528processed as usual, as described above. Trailing white space in X is 529ignored. White space may also appear anywhere on the left side of the 530colon in these constructs, except between . or * and the corresponding 531word. 532 533The -O, -f, -m, and -W switches are handled specifically in these 534constructs. If another value of -O or the negated form of a -f, -m, or 535-W switch is found later in the command line, the earlier switch 536value is ignored, except with {S*} where S is just one letter; this 537passes all matching options. 538 539The character | at the beginning of the predicate text is used to indicate 540that a command should be piped to the following command, but only if -pipe 541is specified. 542 543Note that it is built into CC which switches take arguments and which 544do not. You might think it would be useful to generalize this to 545allow each compiler's spec to say which switches take arguments. But 546this cannot be done in a consistent fashion. CC cannot even decide 547which input files have been specified without knowing which switches 548take arguments, and it must know which input files to compile in order 549to tell which compilers to run. 550 551CC also knows implicitly that arguments starting in `-l' are to be 552treated as compiler output files, and passed to the linker in their 553proper position among the other output files. */ 554 555/* Define the macros used for specs %a, %l, %L, %S, %C, %1. */ 556 557/* config.h can define ASM_SPEC to provide extra args to the assembler 558 or extra switch-translations. */ 559#ifndef ASM_SPEC 560#define ASM_SPEC "" 561#endif 562 563/* config.h can define ASM_FINAL_SPEC to run a post processor after 564 the assembler has run. */ 565#ifndef ASM_FINAL_SPEC 566#define ASM_FINAL_SPEC "" 567#endif 568 569/* config.h can define CPP_SPEC to provide extra args to the C preprocessor 570 or extra switch-translations. */ 571#ifndef CPP_SPEC 572#define CPP_SPEC "" 573#endif 574 575/* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus 576 or extra switch-translations. */ 577#ifndef CC1_SPEC 578#define CC1_SPEC "" 579#endif 580 581/* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus 582 or extra switch-translations. */ 583#ifndef CC1PLUS_SPEC 584#define CC1PLUS_SPEC "" 585#endif 586 587/* config.h can define LINK_SPEC to provide extra args to the linker 588 or extra switch-translations. */ 589#ifndef LINK_SPEC 590#define LINK_SPEC "" 591#endif 592 593/* config.h can define LIB_SPEC to override the default libraries. */ 594#ifndef LIB_SPEC 595#define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}" 596#endif 597 598/* mudflap specs */ 599#ifndef MFWRAP_SPEC 600/* XXX: valid only for GNU ld */ 601/* XXX: should exactly match hooks provided by libmudflap.a */ 602#define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \ 603 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\ 604 --wrap=mmap --wrap=munmap --wrap=alloca\ 605} %{fmudflapth: --wrap=pthread_create\ 606}} %{fmudflap|fmudflapth: --wrap=main}" 607#endif 608#ifndef MFLIB_SPEC 609#define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}" 610#endif 611 612/* config.h can define LIBGCC_SPEC to override how and when libgcc.a is 613 included. */ 614#ifndef LIBGCC_SPEC 615#if defined(REAL_LIBGCC_SPEC) 616#define LIBGCC_SPEC REAL_LIBGCC_SPEC 617#elif defined(LINK_LIBGCC_SPECIAL_1) 618/* Have gcc do the search for libgcc.a. */ 619#define LIBGCC_SPEC "libgcc.a%s" 620#else 621#define LIBGCC_SPEC "-lgcc" 622#endif 623#endif 624 625/* config.h can define STARTFILE_SPEC to override the default crt0 files. */ 626#ifndef STARTFILE_SPEC 627#define STARTFILE_SPEC \ 628 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}" 629#endif 630 631/* config.h can define SWITCHES_NEED_SPACES to control which options 632 require spaces between the option and the argument. */ 633#ifndef SWITCHES_NEED_SPACES 634#define SWITCHES_NEED_SPACES "" 635#endif 636 637/* config.h can define ENDFILE_SPEC to override the default crtn files. */ 638#ifndef ENDFILE_SPEC 639#define ENDFILE_SPEC "" 640#endif 641 642#ifndef LINKER_NAME 643#define LINKER_NAME "collect2" 644#endif 645 646/* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g' 647 to the assembler. */ 648#ifndef ASM_DEBUG_SPEC 649# if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \ 650 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) 651# define ASM_DEBUG_SPEC \ 652 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \ 653 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \ 654 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}") 655# else 656# if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) 657# define ASM_DEBUG_SPEC "%{g*:--gstabs}" 658# endif 659# if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) 660# define ASM_DEBUG_SPEC "%{g*:--gdwarf2}" 661# endif 662# endif 663#endif 664#ifndef ASM_DEBUG_SPEC 665# define ASM_DEBUG_SPEC "" 666#endif 667 668/* Here is the spec for running the linker, after compiling all files. */ 669 670/* This is overridable by the target in case they need to specify the 671 -lgcc and -lc order specially, yet not require them to override all 672 of LINK_COMMAND_SPEC. */ 673#ifndef LINK_GCC_C_SEQUENCE_SPEC 674#define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G" 675#endif 676 677#ifndef LINK_SSP_SPEC 678#ifdef TARGET_LIBC_PROVIDES_SSP 679#define LINK_SSP_SPEC "%{fstack-protector:}" 680#else 681#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-strong|fstack-protector-all:-lssp_nonshared -lssp}" 682#endif 683#endif 684 685#ifndef LINK_PIE_SPEC 686#ifdef HAVE_LD_PIE 687#define LINK_PIE_SPEC "%{pie:-pie} %{p|pg|nopie:-nopie} " 688#else 689#define LINK_PIE_SPEC "%{pie:} " 690#endif 691#endif 692 693/* -u* was put back because both BSD and SysV seem to support it. */ 694/* %{static:} simply prevents an error message if the target machine 695 doesn't handle -static. */ 696/* We want %{T*} after %{L*} and %D so that it can be used to specify linker 697 scripts which exist in user specified directories, or in standard 698 directories. */ 699#ifndef LINK_COMMAND_SPEC 700#define LINK_COMMAND_SPEC "\ 701%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ 702 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\ 703 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\ 704 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\ 705 %{fopenmp:%:include(libgomp.spec)%(link_gomp)} %(mflib)\ 706 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\ 707 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\ 708 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}" 709#endif 710 711#ifndef LINK_LIBGCC_SPEC 712/* Generate -L options for startfile prefix list. */ 713# define LINK_LIBGCC_SPEC "%D" 714#endif 715 716#ifndef STARTFILE_PREFIX_SPEC 717# define STARTFILE_PREFIX_SPEC "" 718#endif 719 720#ifndef SYSROOT_SPEC 721# define SYSROOT_SPEC "--sysroot=%R" 722#endif 723 724#ifndef SYSROOT_SUFFIX_SPEC 725# define SYSROOT_SUFFIX_SPEC "" 726#endif 727 728#ifndef SYSROOT_HEADERS_SUFFIX_SPEC 729# define SYSROOT_HEADERS_SUFFIX_SPEC "" 730#endif 731 732static const char *asm_debug; 733static const char *cpp_spec = CPP_SPEC; 734static const char *cc1_spec = CC1_SPEC; 735static const char *cc1plus_spec = CC1PLUS_SPEC; 736static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC; 737static const char *link_ssp_spec = LINK_SSP_SPEC; 738static const char *asm_spec = ASM_SPEC; 739static const char *asm_final_spec = ASM_FINAL_SPEC; 740static const char *link_spec = LINK_SPEC; 741static const char *lib_spec = LIB_SPEC; 742static const char *mfwrap_spec = MFWRAP_SPEC; 743static const char *mflib_spec = MFLIB_SPEC; 744static const char *link_gomp_spec = ""; 745static const char *libgcc_spec = LIBGCC_SPEC; 746static const char *endfile_spec = ENDFILE_SPEC; 747static const char *startfile_spec = STARTFILE_SPEC; 748static const char *switches_need_spaces = SWITCHES_NEED_SPACES; 749static const char *linker_name_spec = LINKER_NAME; 750static const char *link_command_spec = LINK_COMMAND_SPEC; 751static const char *link_libgcc_spec = LINK_LIBGCC_SPEC; 752static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC; 753static const char *sysroot_spec = SYSROOT_SPEC; 754static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC; 755static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC; 756 757/* Standard options to cpp, cc1, and as, to reduce duplication in specs. 758 There should be no need to override these in target dependent files, 759 but we need to copy them to the specs file so that newer versions 760 of the GCC driver can correctly drive older tool chains with the 761 appropriate -B options. */ 762 763/* When cpplib handles traditional preprocessing, get rid of this, and 764 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so 765 that we default the front end language better. */ 766static const char *trad_capable_cpp = 767"cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}"; 768 769/* We don't wrap .d files in %W{} since a missing .d file, and 770 therefore no dependency entry, confuses make into thinking a .o 771 file that happens to exist is up-to-date. */ 772static const char *cpp_unique_options = 773"%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\ 774 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\ 775 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\ 776 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\ 777 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\ 778 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\ 779 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\ 780 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\ 781 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\ 782 %{E|M|MM:%W{o*}}"; 783 784/* This contains cpp options which are common with cc1_options and are passed 785 only when preprocessing only to avoid duplication. We pass the cc1 spec 786 options to the preprocessor so that it the cc1 spec may manipulate 787 options used to set target flags. Those special target flags settings may 788 in turn cause preprocessor symbols to be defined specially. */ 789static const char *cpp_options = 790"%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\ 791 %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\ 792 %{undef} %{save-temps:-fpch-preprocess}"; 793 794/* This contains cpp options which are not passed when the preprocessor 795 output will be used by another program. */ 796static const char *cpp_debug_options = "%{d*}"; 797 798/* NB: This is shared amongst all front-ends. */ 799static const char *cc1_options = 800"%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ 801 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\ 802 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\ 803 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\ 804 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\ 805 %{Qn:-fno-ident} %{--help:--help}\ 806 %{--target-help:--target-help}\ 807 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\ 808 %{fsyntax-only:-o %j} %{-param*}\ 809 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\ 810 %{coverage:-fprofile-arcs -ftest-coverage}"; 811 812static const char *asm_options = 813"%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}"; 814 815static const char *invoke_as = 816#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT 817"%{!S:-o %|.s |\n as %(asm_options) %|.s %A }"; 818#else 819"%{!S:-o %|.s |\n as %(asm_options) %m.s %A }"; 820#endif 821 822/* Some compilers have limits on line lengths, and the multilib_select 823 and/or multilib_matches strings can be very long, so we build them at 824 run time. */ 825static struct obstack multilib_obstack; 826static const char *multilib_select; 827static const char *multilib_matches; 828static const char *multilib_defaults; 829static const char *multilib_exclusions; 830 831/* Check whether a particular argument is a default argument. */ 832 833#ifndef MULTILIB_DEFAULTS 834#define MULTILIB_DEFAULTS { "" } 835#endif 836 837static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS; 838 839#ifndef DRIVER_SELF_SPECS 840#define DRIVER_SELF_SPECS "" 841#endif 842 843/* Adding -fopenmp should imply pthreads. This is particularly important 844 for targets that use different start files and suchlike. */ 845#ifndef GOMP_SELF_SPECS 846#define GOMP_SELF_SPECS "%{fopenmp: -pthread}" 847#endif 848 849static const char *const driver_self_specs[] = { 850 DRIVER_SELF_SPECS, GOMP_SELF_SPECS 851}; 852 853#ifndef OPTION_DEFAULT_SPECS 854#define OPTION_DEFAULT_SPECS { "", "" } 855#endif 856 857struct default_spec 858{ 859 const char *name; 860 const char *spec; 861}; 862 863static const struct default_spec 864 option_default_specs[] = { OPTION_DEFAULT_SPECS }; 865 866struct user_specs 867{ 868 struct user_specs *next; 869 const char *filename; 870}; 871 872static struct user_specs *user_specs_head, *user_specs_tail; 873 874#ifndef SWITCH_TAKES_ARG 875#define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR) 876#endif 877 878#ifndef WORD_SWITCH_TAKES_ARG 879#define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR) 880#endif 881 882#ifdef HAVE_TARGET_EXECUTABLE_SUFFIX 883/* This defines which switches stop a full compilation. */ 884#define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \ 885 ((CHAR) == 'c' || (CHAR) == 'S') 886 887#ifndef SWITCH_CURTAILS_COMPILATION 888#define SWITCH_CURTAILS_COMPILATION(CHAR) \ 889 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) 890#endif 891#endif 892 893/* Record the mapping from file suffixes for compilation specs. */ 894 895struct compiler 896{ 897 const char *suffix; /* Use this compiler for input files 898 whose names end in this suffix. */ 899 900 const char *spec; /* To use this compiler, run this spec. */ 901 902 const char *cpp_spec; /* If non-NULL, substitute this spec 903 for `%C', rather than the usual 904 cpp_spec. */ 905 const int combinable; /* If nonzero, compiler can deal with 906 multiple source files at once (IMA). */ 907 const int needs_preprocessing; /* If nonzero, source files need to 908 be run through a preprocessor. */ 909}; 910 911/* Pointer to a vector of `struct compiler' that gives the spec for 912 compiling a file, based on its suffix. 913 A file that does not end in any of these suffixes will be passed 914 unchanged to the loader and nothing else will be done to it. 915 916 An entry containing two 0s is used to terminate the vector. 917 918 If multiple entries match a file, the last matching one is used. */ 919 920static struct compiler *compilers; 921 922/* Number of entries in `compilers', not counting the null terminator. */ 923 924static int n_compilers; 925 926/* The default list of file name suffixes and their compilation specs. */ 927 928static const struct compiler default_compilers[] = 929{ 930 /* Add lists of suffixes of known languages here. If those languages 931 were not present when we built the driver, we will hit these copies 932 and be given a more meaningful error than "file not used since 933 linking is not done". */ 934 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0}, 935 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0}, 936 {".mii", "#Objective-C++", 0, 0, 0}, 937 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0}, 938 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0}, 939 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0}, 940 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0}, 941 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0}, 942 {".f", "#Fortran", 0, 0, 0}, {".for", "#Fortran", 0, 0, 0}, 943 {".fpp", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0}, 944 {".FOR", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0}, 945 {".f90", "#Fortran", 0, 0, 0}, {".f95", "#Fortran", 0, 0, 0}, 946 {".F90", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0}, 947 {".r", "#Ratfor", 0, 0, 0}, 948 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0}, 949 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0}, 950 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0}, 951 /* Next come the entries for C. */ 952 {".c", "@c", 0, 1, 1}, 953 {"@c", 954 /* cc1 has an integrated ISO C preprocessor. We should invoke the 955 external preprocessor if -save-temps is given. */ 956 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ 957 %{!E:%{!M:%{!MM:\ 958 %{traditional|ftraditional:\ 959%eGNU C no longer supports -traditional without -E}\ 960 %{!combine:\ 961 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ 962 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\ 963 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \ 964 %(cc1_options)}\ 965 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\ 966 cc1 %(cpp_unique_options) %(cc1_options)}}}\ 967 %{!fsyntax-only:%(invoke_as)}} \ 968 %{combine:\ 969 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ 970 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i}}\ 971 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\ 972 cc1 %(cpp_unique_options) %(cc1_options)}}\ 973 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1}, 974 {"-", 975 "%{!E:%e-E or -x required when input is from standard input}\ 976 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0}, 977 {".h", "@c-header", 0, 0, 0}, 978 {"@c-header", 979 /* cc1 has an integrated ISO C preprocessor. We should invoke the 980 external preprocessor if -save-temps is given. */ 981 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ 982 %{!E:%{!M:%{!MM:\ 983 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ 984 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\ 985 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \ 986 %(cc1_options)\ 987 -o %g.s %{!o*:--output-pch=%i.gch}\ 988 %W{o*:--output-pch=%*}%V}\ 989 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\ 990 cc1 %(cpp_unique_options) %(cc1_options)\ 991 -o %g.s %{!o*:--output-pch=%i.gch}\ 992 %W{o*:--output-pch=%*}%V}}}}}}", 0, 0, 0}, 993 {".i", "@cpp-output", 0, 1, 0}, 994 {"@cpp-output", 995 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0}, 996 {".s", "@assembler", 0, 1, 0}, 997 {"@assembler", 998 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0}, 999 {".S", "@assembler-with-cpp", 0, 1, 0}, 1000 {"@assembler-with-cpp", 1001#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT 1002 "%(trad_capable_cpp) -lang-asm %(cpp_options)\ 1003 %{E|M|MM:%(cpp_debug_options)}\ 1004 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ 1005 as %(asm_debug) %(asm_options) %|.s %A }}}}" 1006#else 1007 "%(trad_capable_cpp) -lang-asm %(cpp_options)\ 1008 %{E|M|MM:%(cpp_debug_options)}\ 1009 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ 1010 as %(asm_debug) %(asm_options) %m.s %A }}}}" 1011#endif 1012 , 0, 1, 0}, 1013 1014#include "specs.h" 1015 /* Mark end of table. */ 1016 {0, 0, 0, 0, 0} 1017}; 1018 1019/* Number of elements in default_compilers, not counting the terminator. */ 1020 1021static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1; 1022 1023/* A vector of options to give to the linker. 1024 These options are accumulated by %x, 1025 and substituted into the linker command with %X. */ 1026static int n_linker_options; 1027static char **linker_options; 1028 1029/* A vector of options to give to the assembler. 1030 These options are accumulated by -Wa, 1031 and substituted into the assembler command with %Y. */ 1032static int n_assembler_options; 1033static char **assembler_options; 1034 1035/* A vector of options to give to the preprocessor. 1036 These options are accumulated by -Wp, 1037 and substituted into the preprocessor command with %Z. */ 1038static int n_preprocessor_options; 1039static char **preprocessor_options; 1040 1041/* Define how to map long options into short ones. */ 1042 1043/* This structure describes one mapping. */ 1044struct option_map 1045{ 1046 /* The long option's name. */ 1047 const char *const name; 1048 /* The equivalent short option. */ 1049 const char *const equivalent; 1050 /* Argument info. A string of flag chars; NULL equals no options. 1051 a => argument required. 1052 o => argument optional. 1053 j => join argument to equivalent, making one word. 1054 * => require other text after NAME as an argument. */ 1055 const char *const arg_info; 1056}; 1057 1058/* This is the table of mappings. Mappings are tried sequentially 1059 for each option encountered; the first one that matches, wins. */ 1060 1061static const struct option_map option_map[] = 1062 { 1063 {"--all-warnings", "-Wall", 0}, 1064 {"--ansi", "-ansi", 0}, 1065 {"--assemble", "-S", 0}, 1066 {"--assert", "-A", "a"}, 1067 {"--classpath", "-fclasspath=", "aj"}, 1068 {"--bootclasspath", "-fbootclasspath=", "aj"}, 1069 {"--CLASSPATH", "-fclasspath=", "aj"}, 1070 {"--combine", "-combine", 0}, 1071 {"--comments", "-C", 0}, 1072 {"--comments-in-macros", "-CC", 0}, 1073 {"--compile", "-c", 0}, 1074 {"--debug", "-g", "oj"}, 1075 {"--define-macro", "-D", "aj"}, 1076 {"--dependencies", "-M", 0}, 1077 {"--dump", "-d", "a"}, 1078 {"--dumpbase", "-dumpbase", "a"}, 1079 {"--encoding", "-fencoding=", "aj"}, 1080 {"--entry", "-e", 0}, 1081 {"--extra-warnings", "-W", 0}, 1082 {"--extdirs", "-fextdirs=", "aj"}, 1083 {"--for-assembler", "-Wa", "a"}, 1084 {"--for-linker", "-Xlinker", "a"}, 1085 {"--force-link", "-u", "a"}, 1086 {"--coverage", "-coverage", 0}, 1087 {"--imacros", "-imacros", "a"}, 1088 {"--include", "-include", "a"}, 1089 {"--include-barrier", "-I-", 0}, 1090 {"--include-directory", "-I", "aj"}, 1091 {"--include-directory-after", "-idirafter", "a"}, 1092 {"--include-prefix", "-iprefix", "a"}, 1093 {"--include-with-prefix", "-iwithprefix", "a"}, 1094 {"--include-with-prefix-before", "-iwithprefixbefore", "a"}, 1095 {"--include-with-prefix-after", "-iwithprefix", "a"}, 1096 {"--language", "-x", "a"}, 1097 {"--library-directory", "-L", "a"}, 1098 {"--machine", "-m", "aj"}, 1099 {"--machine-", "-m", "*j"}, 1100 {"--no-integrated-cpp", "-no-integrated-cpp", 0}, 1101 {"--no-line-commands", "-P", 0}, 1102 {"--no-precompiled-includes", "-noprecomp", 0}, 1103 {"--no-standard-includes", "-nostdinc", 0}, 1104 {"--no-standard-libraries", "-nostdlib", 0}, 1105 {"--no-warnings", "-w", 0}, 1106 {"--optimize", "-O", "oj"}, 1107 {"--output", "-o", "a"}, 1108 {"--output-class-directory", "-foutput-class-dir=", "ja"}, 1109 {"--param", "--param", "a"}, 1110 {"--pass-exit-codes", "-pass-exit-codes", 0}, 1111 {"--pedantic", "-pedantic", 0}, 1112 {"--pedantic-errors", "-pedantic-errors", 0}, 1113 {"--pie", "-pie", 0}, 1114 {"--pipe", "-pipe", 0}, 1115 {"--prefix", "-B", "a"}, 1116 {"--preprocess", "-E", 0}, 1117 {"--print-search-dirs", "-print-search-dirs", 0}, 1118 {"--print-file-name", "-print-file-name=", "aj"}, 1119 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0}, 1120 {"--print-missing-file-dependencies", "-MG", 0}, 1121 {"--print-multi-lib", "-print-multi-lib", 0}, 1122 {"--print-multi-directory", "-print-multi-directory", 0}, 1123 {"--print-multi-os-directory", "-print-multi-os-directory", 0}, 1124 {"--print-prog-name", "-print-prog-name=", "aj"}, 1125 {"--profile", "-p", 0}, 1126 {"--profile-blocks", "-a", 0}, 1127 {"--quiet", "-q", 0}, 1128 {"--resource", "-fcompile-resource=", "aj"}, 1129 {"--save-temps", "-save-temps", 0}, 1130 {"--shared", "-shared", 0}, 1131 {"--silent", "-q", 0}, 1132 {"--specs", "-specs=", "aj"}, 1133 {"--static", "-static", 0}, 1134 {"--std", "-std=", "aj"}, 1135 {"--symbolic", "-symbolic", 0}, 1136 {"--sysroot", "--sysroot=", "aj"}, 1137 {"--time", "-time", 0}, 1138 {"--trace-includes", "-H", 0}, 1139 {"--traditional", "-traditional", 0}, 1140 {"--traditional-cpp", "-traditional-cpp", 0}, 1141 {"--trigraphs", "-trigraphs", 0}, 1142 {"--undefine-macro", "-U", "aj"}, 1143 {"--user-dependencies", "-MM", 0}, 1144 {"--verbose", "-v", 0}, 1145 {"--warn-", "-W", "*j"}, 1146 {"--write-dependencies", "-MD", 0}, 1147 {"--write-user-dependencies", "-MMD", 0}, 1148 {"--", "-f", "*j"} 1149 }; 1150 1151 1152#ifdef TARGET_OPTION_TRANSLATE_TABLE 1153static const struct { 1154 const char *const option_found; 1155 const char *const replacements; 1156} target_option_translations[] = 1157{ 1158 TARGET_OPTION_TRANSLATE_TABLE, 1159 { 0, 0 } 1160}; 1161#endif 1162 1163/* Translate the options described by *ARGCP and *ARGVP. 1164 Make a new vector and store it back in *ARGVP, 1165 and store its length in *ARGVC. */ 1166 1167static void 1168translate_options (int *argcp, const char *const **argvp) 1169{ 1170 int i; 1171 int argc = *argcp; 1172 const char *const *argv = *argvp; 1173 int newvsize = (argc + 2) * 2 * sizeof (const char *); 1174 const char **newv = xmalloc (newvsize); 1175 int newindex = 0; 1176 1177 i = 0; 1178 newv[newindex++] = argv[i++]; 1179 1180 while (i < argc) 1181 { 1182#ifdef TARGET_OPTION_TRANSLATE_TABLE 1183 int tott_idx; 1184 1185 for (tott_idx = 0; 1186 target_option_translations[tott_idx].option_found; 1187 tott_idx++) 1188 { 1189 if (strcmp (target_option_translations[tott_idx].option_found, 1190 argv[i]) == 0) 1191 { 1192 int spaces = 1; 1193 const char *sp; 1194 char *np; 1195 1196 for (sp = target_option_translations[tott_idx].replacements; 1197 *sp; sp++) 1198 { 1199 if (*sp == ' ') 1200 spaces ++; 1201 } 1202 1203 newvsize += spaces * sizeof (const char *); 1204 newv = xrealloc (newv, newvsize); 1205 1206 sp = target_option_translations[tott_idx].replacements; 1207 np = xstrdup (sp); 1208 1209 while (1) 1210 { 1211 while (*np == ' ') 1212 np++; 1213 if (*np == 0) 1214 break; 1215 newv[newindex++] = np; 1216 while (*np != ' ' && *np) 1217 np++; 1218 if (*np == 0) 1219 break; 1220 *np++ = 0; 1221 } 1222 1223 i ++; 1224 break; 1225 } 1226 } 1227 if (target_option_translations[tott_idx].option_found) 1228 continue; 1229#endif 1230 1231 /* Translate -- options. */ 1232 if (argv[i][0] == '-' && argv[i][1] == '-') 1233 { 1234 size_t j; 1235 /* Find a mapping that applies to this option. */ 1236 for (j = 0; j < ARRAY_SIZE (option_map); j++) 1237 { 1238 size_t optlen = strlen (option_map[j].name); 1239 size_t arglen = strlen (argv[i]); 1240 size_t complen = arglen > optlen ? optlen : arglen; 1241 const char *arginfo = option_map[j].arg_info; 1242 1243 if (arginfo == 0) 1244 arginfo = ""; 1245 1246 if (!strncmp (argv[i], option_map[j].name, complen)) 1247 { 1248 const char *arg = 0; 1249 1250 if (arglen < optlen) 1251 { 1252 size_t k; 1253 for (k = j + 1; k < ARRAY_SIZE (option_map); k++) 1254 if (strlen (option_map[k].name) >= arglen 1255 && !strncmp (argv[i], option_map[k].name, arglen)) 1256 { 1257 error ("ambiguous abbreviation %s", argv[i]); 1258 break; 1259 } 1260 1261 if (k != ARRAY_SIZE (option_map)) 1262 break; 1263 } 1264 1265 if (arglen > optlen) 1266 { 1267 /* If the option has an argument, accept that. */ 1268 if (argv[i][optlen] == '=') 1269 arg = argv[i] + optlen + 1; 1270 1271 /* If this mapping requires extra text at end of name, 1272 accept that as "argument". */ 1273 else if (strchr (arginfo, '*') != 0) 1274 arg = argv[i] + optlen; 1275 1276 /* Otherwise, extra text at end means mismatch. 1277 Try other mappings. */ 1278 else 1279 continue; 1280 } 1281 1282 else if (strchr (arginfo, '*') != 0) 1283 { 1284 error ("incomplete '%s' option", option_map[j].name); 1285 break; 1286 } 1287 1288 /* Handle arguments. */ 1289 if (strchr (arginfo, 'a') != 0) 1290 { 1291 if (arg == 0) 1292 { 1293 if (i + 1 == argc) 1294 { 1295 error ("missing argument to '%s' option", 1296 option_map[j].name); 1297 break; 1298 } 1299 1300 arg = argv[++i]; 1301 } 1302 } 1303 else if (strchr (arginfo, '*') != 0) 1304 ; 1305 else if (strchr (arginfo, 'o') == 0) 1306 { 1307 if (arg != 0) 1308 error ("extraneous argument to '%s' option", 1309 option_map[j].name); 1310 arg = 0; 1311 } 1312 1313 /* Store the translation as one argv elt or as two. */ 1314 if (arg != 0 && strchr (arginfo, 'j') != 0) 1315 newv[newindex++] = concat (option_map[j].equivalent, arg, 1316 NULL); 1317 else if (arg != 0) 1318 { 1319 newv[newindex++] = option_map[j].equivalent; 1320 newv[newindex++] = arg; 1321 } 1322 else 1323 newv[newindex++] = option_map[j].equivalent; 1324 1325 break; 1326 } 1327 } 1328 i++; 1329 } 1330 1331 /* Handle old-fashioned options--just copy them through, 1332 with their arguments. */ 1333 else if (argv[i][0] == '-') 1334 { 1335 const char *p = argv[i] + 1; 1336 int c = *p; 1337 int nskip = 1; 1338 1339 if (SWITCH_TAKES_ARG (c) > (p[1] != 0)) 1340 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0); 1341 else if (WORD_SWITCH_TAKES_ARG (p)) 1342 nskip += WORD_SWITCH_TAKES_ARG (p); 1343 else if ((c == 'B' || c == 'b' || c == 'x') 1344 && p[1] == 0) 1345 nskip += 1; 1346 else if (! strcmp (p, "Xlinker")) 1347 nskip += 1; 1348 else if (! strcmp (p, "Xpreprocessor")) 1349 nskip += 1; 1350 else if (! strcmp (p, "Xassembler")) 1351 nskip += 1; 1352 1353 /* Watch out for an option at the end of the command line that 1354 is missing arguments, and avoid skipping past the end of the 1355 command line. */ 1356 if (nskip + i > argc) 1357 nskip = argc - i; 1358 1359 while (nskip > 0) 1360 { 1361 newv[newindex++] = argv[i++]; 1362 nskip--; 1363 } 1364 } 1365 else 1366 /* Ordinary operands, or +e options. */ 1367 newv[newindex++] = argv[i++]; 1368 } 1369 1370 newv[newindex] = 0; 1371 1372 *argvp = newv; 1373 *argcp = newindex; 1374} 1375 1376static char * 1377skip_whitespace (char *p) 1378{ 1379 while (1) 1380 { 1381 /* A fully-blank line is a delimiter in the SPEC file and shouldn't 1382 be considered whitespace. */ 1383 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n') 1384 return p + 1; 1385 else if (*p == '\n' || *p == ' ' || *p == '\t') 1386 p++; 1387 else if (*p == '#') 1388 { 1389 while (*p != '\n') 1390 p++; 1391 p++; 1392 } 1393 else 1394 break; 1395 } 1396 1397 return p; 1398} 1399/* Structures to keep track of prefixes to try when looking for files. */ 1400 1401struct prefix_list 1402{ 1403 const char *prefix; /* String to prepend to the path. */ 1404 struct prefix_list *next; /* Next in linked list. */ 1405 int require_machine_suffix; /* Don't use without machine_suffix. */ 1406 /* 2 means try both machine_suffix and just_machine_suffix. */ 1407 int priority; /* Sort key - priority within list. */ 1408 int os_multilib; /* 1 if OS multilib scheme should be used, 1409 0 for GCC multilib scheme. */ 1410}; 1411 1412struct path_prefix 1413{ 1414 struct prefix_list *plist; /* List of prefixes to try */ 1415 int max_len; /* Max length of a prefix in PLIST */ 1416 const char *name; /* Name of this list (used in config stuff) */ 1417}; 1418 1419/* List of prefixes to try when looking for executables. */ 1420 1421static struct path_prefix exec_prefixes = { 0, 0, "exec" }; 1422 1423/* List of prefixes to try when looking for startup (crt0) files. */ 1424 1425static struct path_prefix startfile_prefixes = { 0, 0, "startfile" }; 1426 1427/* List of prefixes to try when looking for include files. */ 1428 1429static struct path_prefix include_prefixes = { 0, 0, "include" }; 1430 1431/* Suffix to attach to directories searched for commands. 1432 This looks like `MACHINE/VERSION/'. */ 1433 1434static const char *machine_suffix = 0; 1435 1436/* Suffix to attach to directories searched for commands. 1437 This is just `MACHINE/'. */ 1438 1439static const char *just_machine_suffix = 0; 1440 1441/* Adjusted value of GCC_EXEC_PREFIX envvar. */ 1442 1443static const char *gcc_exec_prefix; 1444 1445/* Adjusted value of standard_libexec_prefix. */ 1446 1447static const char *gcc_libexec_prefix; 1448 1449/* Default prefixes to attach to command names. */ 1450 1451#ifndef STANDARD_STARTFILE_PREFIX_1 1452#define STANDARD_STARTFILE_PREFIX_1 "/lib/" 1453#endif 1454#ifndef STANDARD_STARTFILE_PREFIX_2 1455#define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/" 1456#endif 1457 1458#ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */ 1459#undef MD_EXEC_PREFIX 1460#undef MD_STARTFILE_PREFIX 1461#undef MD_STARTFILE_PREFIX_1 1462#endif 1463 1464/* If no prefixes defined, use the null string, which will disable them. */ 1465#ifndef MD_EXEC_PREFIX 1466#define MD_EXEC_PREFIX "" 1467#endif 1468#ifndef MD_STARTFILE_PREFIX 1469#define MD_STARTFILE_PREFIX "" 1470#endif 1471#ifndef MD_STARTFILE_PREFIX_1 1472#define MD_STARTFILE_PREFIX_1 "" 1473#endif 1474 1475static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX; 1476static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/"; 1477static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/"; 1478static const char *md_exec_prefix = MD_EXEC_PREFIX; 1479 1480static const char *md_startfile_prefix = MD_STARTFILE_PREFIX; 1481static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1; 1482static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX; 1483static const char *const standard_startfile_prefix_1 1484 = STANDARD_STARTFILE_PREFIX_1; 1485static const char *const standard_startfile_prefix_2 1486 = STANDARD_STARTFILE_PREFIX_2; 1487 1488static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX; 1489static const char *tooldir_prefix; 1490 1491static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX; 1492 1493static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX; 1494 1495/* Subdirectory to use for locating libraries. Set by 1496 set_multilib_dir based on the compilation options. */ 1497 1498static const char *multilib_dir; 1499 1500/* Subdirectory to use for locating libraries in OS conventions. Set by 1501 set_multilib_dir based on the compilation options. */ 1502 1503static const char *multilib_os_dir; 1504 1505/* Structure to keep track of the specs that have been defined so far. 1506 These are accessed using %(specname) or %[specname] in a compiler 1507 or link spec. */ 1508 1509struct spec_list 1510{ 1511 /* The following 2 fields must be first */ 1512 /* to allow EXTRA_SPECS to be initialized */ 1513 const char *name; /* name of the spec. */ 1514 const char *ptr; /* available ptr if no static pointer */ 1515 1516 /* The following fields are not initialized */ 1517 /* by EXTRA_SPECS */ 1518 const char **ptr_spec; /* pointer to the spec itself. */ 1519 struct spec_list *next; /* Next spec in linked list. */ 1520 int name_len; /* length of the name */ 1521 int alloc_p; /* whether string was allocated */ 1522}; 1523 1524#define INIT_STATIC_SPEC(NAME,PTR) \ 1525{ NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 } 1526 1527/* List of statically defined specs. */ 1528static struct spec_list static_specs[] = 1529{ 1530 INIT_STATIC_SPEC ("asm", &asm_spec), 1531 INIT_STATIC_SPEC ("asm_debug", &asm_debug), 1532 INIT_STATIC_SPEC ("asm_final", &asm_final_spec), 1533 INIT_STATIC_SPEC ("asm_options", &asm_options), 1534 INIT_STATIC_SPEC ("invoke_as", &invoke_as), 1535 INIT_STATIC_SPEC ("cpp", &cpp_spec), 1536 INIT_STATIC_SPEC ("cpp_options", &cpp_options), 1537 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options), 1538 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options), 1539 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp), 1540 INIT_STATIC_SPEC ("cc1", &cc1_spec), 1541 INIT_STATIC_SPEC ("cc1_options", &cc1_options), 1542 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec), 1543 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec), 1544 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec), 1545 INIT_STATIC_SPEC ("endfile", &endfile_spec), 1546 INIT_STATIC_SPEC ("link", &link_spec), 1547 INIT_STATIC_SPEC ("lib", &lib_spec), 1548 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec), 1549 INIT_STATIC_SPEC ("mflib", &mflib_spec), 1550 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec), 1551 INIT_STATIC_SPEC ("libgcc", &libgcc_spec), 1552 INIT_STATIC_SPEC ("startfile", &startfile_spec), 1553 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces), 1554 INIT_STATIC_SPEC ("cross_compile", &cross_compile), 1555 INIT_STATIC_SPEC ("version", &compiler_version), 1556 INIT_STATIC_SPEC ("multilib", &multilib_select), 1557 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults), 1558 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra), 1559 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches), 1560 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions), 1561 INIT_STATIC_SPEC ("multilib_options", &multilib_options), 1562 INIT_STATIC_SPEC ("linker", &linker_name_spec), 1563 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec), 1564 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix), 1565 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix), 1566 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1), 1567 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec), 1568 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec), 1569 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec), 1570 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec), 1571}; 1572 1573#ifdef EXTRA_SPECS /* additional specs needed */ 1574/* Structure to keep track of just the first two args of a spec_list. 1575 That is all that the EXTRA_SPECS macro gives us. */ 1576struct spec_list_1 1577{ 1578 const char *const name; 1579 const char *const ptr; 1580}; 1581 1582static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS }; 1583static struct spec_list *extra_specs = (struct spec_list *) 0; 1584#endif 1585 1586/* List of dynamically allocates specs that have been defined so far. */ 1587 1588static struct spec_list *specs = (struct spec_list *) 0; 1589 1590/* List of static spec functions. */ 1591 1592static const struct spec_function static_spec_functions[] = 1593{ 1594 { "if-exists", if_exists_spec_function }, 1595 { "if-exists-else", if_exists_else_spec_function }, 1596 { "replace-outfile", replace_outfile_spec_function }, 1597 { "version-compare", version_compare_spec_function }, 1598 { "include", include_spec_function }, 1599#ifdef EXTRA_SPEC_FUNCTIONS 1600 EXTRA_SPEC_FUNCTIONS 1601#endif 1602 { 0, 0 } 1603}; 1604 1605static int processing_spec_function; 1606 1607/* Add appropriate libgcc specs to OBSTACK, taking into account 1608 various permutations of -shared-libgcc, -shared, and such. */ 1609 1610#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) 1611 1612#ifndef USE_LD_AS_NEEDED 1613#define USE_LD_AS_NEEDED 0 1614#endif 1615 1616static void 1617init_gcc_specs (struct obstack *obstack, const char *shared_name, 1618 const char *static_name, const char *eh_name) 1619{ 1620 char *buf; 1621 1622 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}" 1623 "%{!static:%{!static-libgcc:" 1624#if USE_LD_AS_NEEDED 1625 "%{!shared-libgcc:", 1626 static_name, " --as-needed ", shared_name, " --no-as-needed" 1627 "}" 1628 "%{shared-libgcc:", 1629 shared_name, "%{!shared: ", static_name, "}" 1630 "}" 1631#else 1632 "%{!shared:" 1633 "%{!shared-libgcc:", static_name, " ", eh_name, "}" 1634 "%{shared-libgcc:", shared_name, " ", static_name, "}" 1635 "}" 1636#ifdef LINK_EH_SPEC 1637 "%{shared:" 1638 "%{shared-libgcc:", shared_name, "}" 1639 "%{!shared-libgcc:", static_name, "}" 1640 "}" 1641#else 1642 "%{shared:", shared_name, "}" 1643#endif 1644#endif 1645 "}}", NULL); 1646 1647 obstack_grow (obstack, buf, strlen (buf)); 1648 free (buf); 1649} 1650#endif /* ENABLE_SHARED_LIBGCC */ 1651 1652/* Initialize the specs lookup routines. */ 1653 1654static void 1655init_spec (void) 1656{ 1657 struct spec_list *next = (struct spec_list *) 0; 1658 struct spec_list *sl = (struct spec_list *) 0; 1659 int i; 1660 1661 if (specs) 1662 return; /* Already initialized. */ 1663 1664 if (verbose_flag) 1665 notice ("Using built-in specs.\n"); 1666 1667#ifdef EXTRA_SPECS 1668 extra_specs = xcalloc (sizeof (struct spec_list), 1669 ARRAY_SIZE (extra_specs_1)); 1670 1671 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--) 1672 { 1673 sl = &extra_specs[i]; 1674 sl->name = extra_specs_1[i].name; 1675 sl->ptr = extra_specs_1[i].ptr; 1676 sl->next = next; 1677 sl->name_len = strlen (sl->name); 1678 sl->ptr_spec = &sl->ptr; 1679 next = sl; 1680 } 1681#endif 1682 1683 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes 1684 on ?: in file-scope variable initializations. */ 1685 asm_debug = ASM_DEBUG_SPEC; 1686 1687 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) 1688 { 1689 sl = &static_specs[i]; 1690 sl->next = next; 1691 next = sl; 1692 } 1693 1694#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) 1695 /* ??? If neither -shared-libgcc nor --static-libgcc was 1696 seen, then we should be making an educated guess. Some proposed 1697 heuristics for ELF include: 1698 1699 (1) If "-Wl,--export-dynamic", then it's a fair bet that the 1700 program will be doing dynamic loading, which will likely 1701 need the shared libgcc. 1702 1703 (2) If "-ldl", then it's also a fair bet that we're doing 1704 dynamic loading. 1705 1706 (3) For each ET_DYN we're linking against (either through -lfoo 1707 or /some/path/foo.so), check to see whether it or one of 1708 its dependencies depends on a shared libgcc. 1709 1710 (4) If "-shared" 1711 1712 If the runtime is fixed to look for program headers instead 1713 of calling __register_frame_info at all, for each object, 1714 use the shared libgcc if any EH symbol referenced. 1715 1716 If crtstuff is fixed to not invoke __register_frame_info 1717 automatically, for each object, use the shared libgcc if 1718 any non-empty unwind section found. 1719 1720 Doing any of this probably requires invoking an external program to 1721 do the actual object file scanning. */ 1722 { 1723 const char *p = libgcc_spec; 1724 int in_sep = 1; 1725 1726 /* Transform the extant libgcc_spec into one that uses the shared libgcc 1727 when given the proper command line arguments. */ 1728 while (*p) 1729 { 1730 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0) 1731 { 1732 init_gcc_specs (&obstack, 1733 "-lgcc_s" 1734#ifdef USE_LIBUNWIND_EXCEPTIONS 1735 " -lunwind" 1736#endif 1737 , 1738 "-lgcc", 1739 "-lgcc_eh" 1740#ifdef USE_LIBUNWIND_EXCEPTIONS 1741# ifdef HAVE_LD_STATIC_DYNAMIC 1742 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}" 1743# else 1744 " -lunwind" 1745# endif 1746#endif 1747 ); 1748 1749 p += 5; 1750 in_sep = 0; 1751 } 1752 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0) 1753 { 1754 /* Ug. We don't know shared library extensions. Hope that 1755 systems that use this form don't do shared libraries. */ 1756 init_gcc_specs (&obstack, 1757 "-lgcc_s", 1758 "libgcc.a%s", 1759 "libgcc_eh.a%s" 1760#ifdef USE_LIBUNWIND_EXCEPTIONS 1761 " -lunwind" 1762#endif 1763 ); 1764 p += 10; 1765 in_sep = 0; 1766 } 1767 else 1768 { 1769 obstack_1grow (&obstack, *p); 1770 in_sep = (*p == ' '); 1771 p += 1; 1772 } 1773 } 1774 1775 obstack_1grow (&obstack, '\0'); 1776 libgcc_spec = XOBFINISH (&obstack, const char *); 1777 } 1778#endif 1779#ifdef USE_AS_TRADITIONAL_FORMAT 1780 /* Prepend "--traditional-format" to whatever asm_spec we had before. */ 1781 { 1782 static const char tf[] = "--traditional-format "; 1783 obstack_grow (&obstack, tf, sizeof(tf) - 1); 1784 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec)); 1785 asm_spec = XOBFINISH (&obstack, const char *); 1786 } 1787#endif 1788#ifdef LINK_EH_SPEC 1789 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */ 1790 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1); 1791 obstack_grow0 (&obstack, link_spec, strlen (link_spec)); 1792 link_spec = XOBFINISH (&obstack, const char *); 1793#endif 1794 1795 specs = sl; 1796} 1797 1798/* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is 1799 removed; If the spec starts with a + then SPEC is added to the end of the 1800 current spec. */ 1801 1802static void 1803set_spec (const char *name, const char *spec) 1804{ 1805 struct spec_list *sl; 1806 const char *old_spec; 1807 int name_len = strlen (name); 1808 int i; 1809 1810 /* If this is the first call, initialize the statically allocated specs. */ 1811 if (!specs) 1812 { 1813 struct spec_list *next = (struct spec_list *) 0; 1814 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) 1815 { 1816 sl = &static_specs[i]; 1817 sl->next = next; 1818 next = sl; 1819 } 1820 specs = sl; 1821 } 1822 1823 /* See if the spec already exists. */ 1824 for (sl = specs; sl; sl = sl->next) 1825 if (name_len == sl->name_len && !strcmp (sl->name, name)) 1826 break; 1827 1828 if (!sl) 1829 { 1830 /* Not found - make it. */ 1831 sl = XNEW (struct spec_list); 1832 sl->name = xstrdup (name); 1833 sl->name_len = name_len; 1834 sl->ptr_spec = &sl->ptr; 1835 sl->alloc_p = 0; 1836 *(sl->ptr_spec) = ""; 1837 sl->next = specs; 1838 specs = sl; 1839 } 1840 1841 old_spec = *(sl->ptr_spec); 1842 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1])) 1843 ? concat (old_spec, spec + 1, NULL) 1844 : xstrdup (spec)); 1845 1846#ifdef DEBUG_SPECS 1847 if (verbose_flag) 1848 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec)); 1849#endif 1850 1851 /* Free the old spec. */ 1852 if (old_spec && sl->alloc_p) 1853 free ((void *) old_spec); 1854 1855 sl->alloc_p = 1; 1856} 1857 1858/* Accumulate a command (program name and args), and run it. */ 1859 1860/* Vector of pointers to arguments in the current line of specifications. */ 1861 1862static const char **argbuf; 1863 1864/* Number of elements allocated in argbuf. */ 1865 1866static int argbuf_length; 1867 1868/* Number of elements in argbuf currently in use (containing args). */ 1869 1870static int argbuf_index; 1871 1872/* Position in the argbuf array containing the name of the output file 1873 (the value associated with the "-o" flag). */ 1874 1875static int have_o_argbuf_index = 0; 1876 1877/* Were the options -c or -S passed. */ 1878static int have_c = 0; 1879 1880/* Was the option -o passed. */ 1881static int have_o = 0; 1882 1883/* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated 1884 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for 1885 it here. */ 1886 1887static struct temp_name { 1888 const char *suffix; /* suffix associated with the code. */ 1889 int length; /* strlen (suffix). */ 1890 int unique; /* Indicates whether %g or %u/%U was used. */ 1891 const char *filename; /* associated filename. */ 1892 int filename_length; /* strlen (filename). */ 1893 struct temp_name *next; 1894} *temp_names; 1895 1896/* Number of commands executed so far. */ 1897 1898static int execution_count; 1899 1900/* Number of commands that exited with a signal. */ 1901 1902static int signal_count; 1903 1904/* Name with which this program was invoked. */ 1905 1906static const char *programname; 1907 1908/* Allocate the argument vector. */ 1909 1910static void 1911alloc_args (void) 1912{ 1913 argbuf_length = 10; 1914 argbuf = XNEWVEC (const char *, argbuf_length); 1915} 1916 1917/* Clear out the vector of arguments (after a command is executed). */ 1918 1919static void 1920clear_args (void) 1921{ 1922 argbuf_index = 0; 1923} 1924 1925/* Add one argument to the vector at the end. 1926 This is done when a space is seen or at the end of the line. 1927 If DELETE_ALWAYS is nonzero, the arg is a filename 1928 and the file should be deleted eventually. 1929 If DELETE_FAILURE is nonzero, the arg is a filename 1930 and the file should be deleted if this compilation fails. */ 1931 1932static void 1933store_arg (const char *arg, int delete_always, int delete_failure) 1934{ 1935 if (argbuf_index + 1 == argbuf_length) 1936 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *)); 1937 1938 argbuf[argbuf_index++] = arg; 1939 argbuf[argbuf_index] = 0; 1940 1941 if (strcmp (arg, "-o") == 0) 1942 have_o_argbuf_index = argbuf_index; 1943 if (delete_always || delete_failure) 1944 record_temp_file (arg, delete_always, delete_failure); 1945} 1946 1947/* Load specs from a file name named FILENAME, replacing occurrences of 1948 various different types of line-endings, \r\n, \n\r and just \r, with 1949 a single \n. */ 1950 1951static char * 1952load_specs (const char *filename) 1953{ 1954 int desc; 1955 int readlen; 1956 struct stat statbuf; 1957 char *buffer; 1958 char *buffer_p; 1959 char *specs; 1960 char *specs_p; 1961 1962 if (verbose_flag) 1963 notice ("Reading specs from %s\n", filename); 1964 1965 /* Open and stat the file. */ 1966 desc = open (filename, O_RDONLY, 0); 1967 if (desc < 0) 1968 pfatal_with_name (filename); 1969 if (stat (filename, &statbuf) < 0) 1970 pfatal_with_name (filename); 1971 1972 /* Read contents of file into BUFFER. */ 1973 buffer = XNEWVEC (char, statbuf.st_size + 1); 1974 readlen = read (desc, buffer, (unsigned) statbuf.st_size); 1975 if (readlen < 0) 1976 pfatal_with_name (filename); 1977 buffer[readlen] = 0; 1978 close (desc); 1979 1980 specs = XNEWVEC (char, readlen + 1); 1981 specs_p = specs; 1982 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++) 1983 { 1984 int skip = 0; 1985 char c = *buffer_p; 1986 if (c == '\r') 1987 { 1988 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */ 1989 skip = 1; 1990 else if (*(buffer_p + 1) == '\n') /* \r\n */ 1991 skip = 1; 1992 else /* \r */ 1993 c = '\n'; 1994 } 1995 if (! skip) 1996 *specs_p++ = c; 1997 } 1998 *specs_p = '\0'; 1999 2000 free (buffer); 2001 return (specs); 2002} 2003 2004/* Read compilation specs from a file named FILENAME, 2005 replacing the default ones. 2006 2007 A suffix which starts with `*' is a definition for 2008 one of the machine-specific sub-specs. The "suffix" should be 2009 *asm, *cc1, *cpp, *link, *startfile, etc. 2010 The corresponding spec is stored in asm_spec, etc., 2011 rather than in the `compilers' vector. 2012 2013 Anything invalid in the file is a fatal error. */ 2014 2015static void 2016read_specs (const char *filename, int main_p) 2017{ 2018 char *buffer; 2019 char *p; 2020 2021 buffer = load_specs (filename); 2022 2023 /* Scan BUFFER for specs, putting them in the vector. */ 2024 p = buffer; 2025 while (1) 2026 { 2027 char *suffix; 2028 char *spec; 2029 char *in, *out, *p1, *p2, *p3; 2030 2031 /* Advance P in BUFFER to the next nonblank nocomment line. */ 2032 p = skip_whitespace (p); 2033 if (*p == 0) 2034 break; 2035 2036 /* Is this a special command that starts with '%'? */ 2037 /* Don't allow this for the main specs file, since it would 2038 encourage people to overwrite it. */ 2039 if (*p == '%' && !main_p) 2040 { 2041 p1 = p; 2042 while (*p && *p != '\n') 2043 p++; 2044 2045 /* Skip '\n'. */ 2046 p++; 2047 2048 if (!strncmp (p1, "%include", sizeof ("%include") - 1) 2049 && (p1[sizeof "%include" - 1] == ' ' 2050 || p1[sizeof "%include" - 1] == '\t')) 2051 { 2052 char *new_filename; 2053 2054 p1 += sizeof ("%include"); 2055 while (*p1 == ' ' || *p1 == '\t') 2056 p1++; 2057 2058 if (*p1++ != '<' || p[-2] != '>') 2059 fatal ("specs %%include syntax malformed after %ld characters", 2060 (long) (p1 - buffer + 1)); 2061 2062 p[-2] = '\0'; 2063 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); 2064 read_specs (new_filename ? new_filename : p1, FALSE); 2065 continue; 2066 } 2067 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1) 2068 && (p1[sizeof "%include_noerr" - 1] == ' ' 2069 || p1[sizeof "%include_noerr" - 1] == '\t')) 2070 { 2071 char *new_filename; 2072 2073 p1 += sizeof "%include_noerr"; 2074 while (*p1 == ' ' || *p1 == '\t') 2075 p1++; 2076 2077 if (*p1++ != '<' || p[-2] != '>') 2078 fatal ("specs %%include syntax malformed after %ld characters", 2079 (long) (p1 - buffer + 1)); 2080 2081 p[-2] = '\0'; 2082 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); 2083 if (new_filename) 2084 read_specs (new_filename, FALSE); 2085 else if (verbose_flag) 2086 notice ("could not find specs file %s\n", p1); 2087 continue; 2088 } 2089 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1) 2090 && (p1[sizeof "%rename" - 1] == ' ' 2091 || p1[sizeof "%rename" - 1] == '\t')) 2092 { 2093 int name_len; 2094 struct spec_list *sl; 2095 struct spec_list *newsl; 2096 2097 /* Get original name. */ 2098 p1 += sizeof "%rename"; 2099 while (*p1 == ' ' || *p1 == '\t') 2100 p1++; 2101 2102 if (! ISALPHA ((unsigned char) *p1)) 2103 fatal ("specs %%rename syntax malformed after %ld characters", 2104 (long) (p1 - buffer)); 2105 2106 p2 = p1; 2107 while (*p2 && !ISSPACE ((unsigned char) *p2)) 2108 p2++; 2109 2110 if (*p2 != ' ' && *p2 != '\t') 2111 fatal ("specs %%rename syntax malformed after %ld characters", 2112 (long) (p2 - buffer)); 2113 2114 name_len = p2 - p1; 2115 *p2++ = '\0'; 2116 while (*p2 == ' ' || *p2 == '\t') 2117 p2++; 2118 2119 if (! ISALPHA ((unsigned char) *p2)) 2120 fatal ("specs %%rename syntax malformed after %ld characters", 2121 (long) (p2 - buffer)); 2122 2123 /* Get new spec name. */ 2124 p3 = p2; 2125 while (*p3 && !ISSPACE ((unsigned char) *p3)) 2126 p3++; 2127 2128 if (p3 != p - 1) 2129 fatal ("specs %%rename syntax malformed after %ld characters", 2130 (long) (p3 - buffer)); 2131 *p3 = '\0'; 2132 2133 for (sl = specs; sl; sl = sl->next) 2134 if (name_len == sl->name_len && !strcmp (sl->name, p1)) 2135 break; 2136 2137 if (!sl) 2138 fatal ("specs %s spec was not found to be renamed", p1); 2139 2140 if (strcmp (p1, p2) == 0) 2141 continue; 2142 2143 for (newsl = specs; newsl; newsl = newsl->next) 2144 if (strcmp (newsl->name, p2) == 0) 2145 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'", 2146 filename, p1, p2); 2147 2148 if (verbose_flag) 2149 { 2150 notice ("rename spec %s to %s\n", p1, p2); 2151#ifdef DEBUG_SPECS 2152 notice ("spec is '%s'\n\n", *(sl->ptr_spec)); 2153#endif 2154 } 2155 2156 set_spec (p2, *(sl->ptr_spec)); 2157 if (sl->alloc_p) 2158 free ((void *) *(sl->ptr_spec)); 2159 2160 *(sl->ptr_spec) = ""; 2161 sl->alloc_p = 0; 2162 continue; 2163 } 2164 else 2165 fatal ("specs unknown %% command after %ld characters", 2166 (long) (p1 - buffer)); 2167 } 2168 2169 /* Find the colon that should end the suffix. */ 2170 p1 = p; 2171 while (*p1 && *p1 != ':' && *p1 != '\n') 2172 p1++; 2173 2174 /* The colon shouldn't be missing. */ 2175 if (*p1 != ':') 2176 fatal ("specs file malformed after %ld characters", 2177 (long) (p1 - buffer)); 2178 2179 /* Skip back over trailing whitespace. */ 2180 p2 = p1; 2181 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) 2182 p2--; 2183 2184 /* Copy the suffix to a string. */ 2185 suffix = save_string (p, p2 - p); 2186 /* Find the next line. */ 2187 p = skip_whitespace (p1 + 1); 2188 if (p[1] == 0) 2189 fatal ("specs file malformed after %ld characters", 2190 (long) (p - buffer)); 2191 2192 p1 = p; 2193 /* Find next blank line or end of string. */ 2194 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0'))) 2195 p1++; 2196 2197 /* Specs end at the blank line and do not include the newline. */ 2198 spec = save_string (p, p1 - p); 2199 p = p1; 2200 2201 /* Delete backslash-newline sequences from the spec. */ 2202 in = spec; 2203 out = spec; 2204 while (*in != 0) 2205 { 2206 if (in[0] == '\\' && in[1] == '\n') 2207 in += 2; 2208 else if (in[0] == '#') 2209 while (*in && *in != '\n') 2210 in++; 2211 2212 else 2213 *out++ = *in++; 2214 } 2215 *out = 0; 2216 2217 if (suffix[0] == '*') 2218 { 2219 if (! strcmp (suffix, "*link_command")) 2220 link_command_spec = spec; 2221 else 2222 set_spec (suffix + 1, spec); 2223 } 2224 else 2225 { 2226 /* Add this pair to the vector. */ 2227 compilers 2228 = xrealloc (compilers, 2229 (n_compilers + 2) * sizeof (struct compiler)); 2230 2231 compilers[n_compilers].suffix = suffix; 2232 compilers[n_compilers].spec = spec; 2233 n_compilers++; 2234 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]); 2235 } 2236 2237 if (*suffix == 0) 2238 link_command_spec = spec; 2239 } 2240 2241 if (link_command_spec == 0) 2242 fatal ("spec file has no spec for linking"); 2243} 2244 2245/* Record the names of temporary files we tell compilers to write, 2246 and delete them at the end of the run. */ 2247 2248/* This is the common prefix we use to make temp file names. 2249 It is chosen once for each run of this program. 2250 It is substituted into a spec by %g or %j. 2251 Thus, all temp file names contain this prefix. 2252 In practice, all temp file names start with this prefix. 2253 2254 This prefix comes from the envvar TMPDIR if it is defined; 2255 otherwise, from the P_tmpdir macro if that is defined; 2256 otherwise, in /usr/tmp or /tmp; 2257 or finally the current directory if all else fails. */ 2258 2259static const char *temp_filename; 2260 2261/* Length of the prefix. */ 2262 2263static int temp_filename_length; 2264 2265/* Define the list of temporary files to delete. */ 2266 2267struct temp_file 2268{ 2269 const char *name; 2270 struct temp_file *next; 2271}; 2272 2273/* Queue of files to delete on success or failure of compilation. */ 2274static struct temp_file *always_delete_queue; 2275/* Queue of files to delete on failure of compilation. */ 2276static struct temp_file *failure_delete_queue; 2277 2278/* Record FILENAME as a file to be deleted automatically. 2279 ALWAYS_DELETE nonzero means delete it if all compilation succeeds; 2280 otherwise delete it in any case. 2281 FAIL_DELETE nonzero means delete it if a compilation step fails; 2282 otherwise delete it in any case. */ 2283 2284void 2285record_temp_file (const char *filename, int always_delete, int fail_delete) 2286{ 2287 char *const name = xstrdup (filename); 2288 2289 if (always_delete) 2290 { 2291 struct temp_file *temp; 2292 for (temp = always_delete_queue; temp; temp = temp->next) 2293 if (! strcmp (name, temp->name)) 2294 goto already1; 2295 2296 temp = XNEW (struct temp_file); 2297 temp->next = always_delete_queue; 2298 temp->name = name; 2299 always_delete_queue = temp; 2300 2301 already1:; 2302 } 2303 2304 if (fail_delete) 2305 { 2306 struct temp_file *temp; 2307 for (temp = failure_delete_queue; temp; temp = temp->next) 2308 if (! strcmp (name, temp->name)) 2309 goto already2; 2310 2311 temp = XNEW (struct temp_file); 2312 temp->next = failure_delete_queue; 2313 temp->name = name; 2314 failure_delete_queue = temp; 2315 2316 already2:; 2317 } 2318} 2319 2320/* Delete all the temporary files whose names we previously recorded. */ 2321 2322#ifndef DELETE_IF_ORDINARY 2323#define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \ 2324do \ 2325 { \ 2326 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \ 2327 if (unlink (NAME) < 0) \ 2328 if (VERBOSE_FLAG) \ 2329 perror_with_name (NAME); \ 2330 } while (0) 2331#endif 2332 2333static void 2334delete_if_ordinary (const char *name) 2335{ 2336 struct stat st; 2337#ifdef DEBUG 2338 int i, c; 2339 2340 printf ("Delete %s? (y or n) ", name); 2341 fflush (stdout); 2342 i = getchar (); 2343 if (i != '\n') 2344 while ((c = getchar ()) != '\n' && c != EOF) 2345 ; 2346 2347 if (i == 'y' || i == 'Y') 2348#endif /* DEBUG */ 2349 DELETE_IF_ORDINARY (name, st, verbose_flag); 2350} 2351 2352static void 2353delete_temp_files (void) 2354{ 2355 struct temp_file *temp; 2356 2357 for (temp = always_delete_queue; temp; temp = temp->next) 2358 delete_if_ordinary (temp->name); 2359 always_delete_queue = 0; 2360} 2361 2362/* Delete all the files to be deleted on error. */ 2363 2364static void 2365delete_failure_queue (void) 2366{ 2367 struct temp_file *temp; 2368 2369 for (temp = failure_delete_queue; temp; temp = temp->next) 2370 delete_if_ordinary (temp->name); 2371} 2372 2373static void 2374clear_failure_queue (void) 2375{ 2376 failure_delete_queue = 0; 2377} 2378 2379/* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK 2380 returns non-NULL. 2381 If DO_MULTI is true iterate over the paths twice, first with multilib 2382 suffix then without, otherwise iterate over the paths once without 2383 adding a multilib suffix. When DO_MULTI is true, some attempt is made 2384 to avoid visiting the same path twice, but we could do better. For 2385 instance, /usr/lib/../lib is considered different from /usr/lib. 2386 At least EXTRA_SPACE chars past the end of the path passed to 2387 CALLBACK are available for use by the callback. 2388 CALLBACK_INFO allows extra parameters to be passed to CALLBACK. 2389 2390 Returns the value returned by CALLBACK. */ 2391 2392static void * 2393for_each_path (const struct path_prefix *paths, 2394 bool do_multi, 2395 size_t extra_space, 2396 void *(*callback) (char *, void *), 2397 void *callback_info) 2398{ 2399 struct prefix_list *pl; 2400 const char *multi_dir = NULL; 2401 const char *multi_os_dir = NULL; 2402 const char *multi_suffix; 2403 const char *just_multi_suffix; 2404 char *path = NULL; 2405 void *ret = NULL; 2406 bool skip_multi_dir = false; 2407 bool skip_multi_os_dir = false; 2408 2409 multi_suffix = machine_suffix; 2410 just_multi_suffix = just_machine_suffix; 2411 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0) 2412 { 2413 multi_dir = concat (multilib_dir, dir_separator_str, NULL); 2414 multi_suffix = concat (multi_suffix, multi_dir, NULL); 2415 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL); 2416 } 2417 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0) 2418 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL); 2419 2420 while (1) 2421 { 2422 size_t multi_dir_len = 0; 2423 size_t multi_os_dir_len = 0; 2424 size_t suffix_len; 2425 size_t just_suffix_len; 2426 size_t len; 2427 2428 if (multi_dir) 2429 multi_dir_len = strlen (multi_dir); 2430 if (multi_os_dir) 2431 multi_os_dir_len = strlen (multi_os_dir); 2432 suffix_len = strlen (multi_suffix); 2433 just_suffix_len = strlen (just_multi_suffix); 2434 2435 if (path == NULL) 2436 { 2437 len = paths->max_len + extra_space + 1; 2438 if (suffix_len > multi_os_dir_len) 2439 len += suffix_len; 2440 else 2441 len += multi_os_dir_len; 2442 path = XNEWVEC (char, len); 2443 } 2444 2445 for (pl = paths->plist; pl != 0; pl = pl->next) 2446 { 2447 len = strlen (pl->prefix); 2448 memcpy (path, pl->prefix, len); 2449 2450 /* Look first in MACHINE/VERSION subdirectory. */ 2451 if (!skip_multi_dir) 2452 { 2453 memcpy (path + len, multi_suffix, suffix_len + 1); 2454 ret = callback (path, callback_info); 2455 if (ret) 2456 break; 2457 } 2458 2459 /* Some paths are tried with just the machine (ie. target) 2460 subdir. This is used for finding as, ld, etc. */ 2461 if (!skip_multi_dir 2462 && pl->require_machine_suffix == 2) 2463 { 2464 memcpy (path + len, just_multi_suffix, just_suffix_len + 1); 2465 ret = callback (path, callback_info); 2466 if (ret) 2467 break; 2468 } 2469 2470 /* Now try the base path. */ 2471 if (!pl->require_machine_suffix 2472 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir)) 2473 { 2474 const char *this_multi; 2475 size_t this_multi_len; 2476 2477 if (pl->os_multilib) 2478 { 2479 this_multi = multi_os_dir; 2480 this_multi_len = multi_os_dir_len; 2481 } 2482 else 2483 { 2484 this_multi = multi_dir; 2485 this_multi_len = multi_dir_len; 2486 } 2487 2488 if (this_multi_len) 2489 memcpy (path + len, this_multi, this_multi_len + 1); 2490 else 2491 path[len] = '\0'; 2492 2493 ret = callback (path, callback_info); 2494 if (ret) 2495 break; 2496 } 2497 } 2498 if (pl) 2499 break; 2500 2501 if (multi_dir == NULL && multi_os_dir == NULL) 2502 break; 2503 2504 /* Run through the paths again, this time without multilibs. 2505 Don't repeat any we have already seen. */ 2506 if (multi_dir) 2507 { 2508 free ((char *) multi_dir); 2509 multi_dir = NULL; 2510 free ((char *) multi_suffix); 2511 multi_suffix = machine_suffix; 2512 free ((char *) just_multi_suffix); 2513 just_multi_suffix = just_machine_suffix; 2514 } 2515 else 2516 skip_multi_dir = true; 2517 if (multi_os_dir) 2518 { 2519 free ((char *) multi_os_dir); 2520 multi_os_dir = NULL; 2521 } 2522 else 2523 skip_multi_os_dir = true; 2524 } 2525 2526 if (multi_dir) 2527 { 2528 free ((char *) multi_dir); 2529 free ((char *) multi_suffix); 2530 free ((char *) just_multi_suffix); 2531 } 2532 if (multi_os_dir) 2533 free ((char *) multi_os_dir); 2534 if (ret != path) 2535 free (path); 2536 return ret; 2537} 2538 2539/* Callback for build_search_list. Adds path to obstack being built. */ 2540 2541struct add_to_obstack_info { 2542 struct obstack *ob; 2543 bool check_dir; 2544 bool first_time; 2545}; 2546 2547static void * 2548add_to_obstack (char *path, void *data) 2549{ 2550 struct add_to_obstack_info *info = data; 2551 2552 if (info->check_dir && !is_directory (path, false)) 2553 return NULL; 2554 2555 if (!info->first_time) 2556 obstack_1grow (info->ob, PATH_SEPARATOR); 2557 2558 obstack_grow (info->ob, path, strlen (path)); 2559 2560 info->first_time = false; 2561 return NULL; 2562} 2563 2564/* Build a list of search directories from PATHS. 2565 PREFIX is a string to prepend to the list. 2566 If CHECK_DIR_P is true we ensure the directory exists. 2567 If DO_MULTI is true, multilib paths are output first, then 2568 non-multilib paths. 2569 This is used mostly by putenv_from_prefixes so we use `collect_obstack'. 2570 It is also used by the --print-search-dirs flag. */ 2571 2572static char * 2573build_search_list (const struct path_prefix *paths, const char *prefix, 2574 bool check_dir, bool do_multi) 2575{ 2576 struct add_to_obstack_info info; 2577 2578 info.ob = &collect_obstack; 2579 info.check_dir = check_dir; 2580 info.first_time = true; 2581 2582 obstack_grow (&collect_obstack, prefix, strlen (prefix)); 2583 obstack_1grow (&collect_obstack, '='); 2584 2585 for_each_path (paths, do_multi, 0, add_to_obstack, &info); 2586 2587 obstack_1grow (&collect_obstack, '\0'); 2588 return XOBFINISH (&collect_obstack, char *); 2589} 2590 2591/* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables 2592 for collect. */ 2593 2594static void 2595putenv_from_prefixes (const struct path_prefix *paths, const char *env_var, 2596 bool do_multi) 2597{ 2598 putenv (build_search_list (paths, env_var, true, do_multi)); 2599} 2600 2601/* Check whether NAME can be accessed in MODE. This is like access, 2602 except that it never considers directories to be executable. */ 2603 2604static int 2605access_check (const char *name, int mode) 2606{ 2607 if (mode == X_OK) 2608 { 2609 struct stat st; 2610 2611 if (stat (name, &st) < 0 2612 || S_ISDIR (st.st_mode)) 2613 return -1; 2614 } 2615 2616 return access (name, mode); 2617} 2618 2619/* Callback for find_a_file. Appends the file name to the directory 2620 path. If the resulting file exists in the right mode, return the 2621 full pathname to the file. */ 2622 2623struct file_at_path_info { 2624 const char *name; 2625 const char *suffix; 2626 int name_len; 2627 int suffix_len; 2628 int mode; 2629}; 2630 2631static void * 2632file_at_path (char *path, void *data) 2633{ 2634 struct file_at_path_info *info = data; 2635 size_t len = strlen (path); 2636 2637 memcpy (path + len, info->name, info->name_len); 2638 len += info->name_len; 2639 2640 /* Some systems have a suffix for executable files. 2641 So try appending that first. */ 2642 if (info->suffix_len) 2643 { 2644 memcpy (path + len, info->suffix, info->suffix_len + 1); 2645 if (access_check (path, info->mode) == 0) 2646 return path; 2647 } 2648 2649 path[len] = '\0'; 2650 if (access_check (path, info->mode) == 0) 2651 return path; 2652 2653 return NULL; 2654} 2655 2656/* Search for NAME using the prefix list PREFIXES. MODE is passed to 2657 access to check permissions. If DO_MULTI is true, search multilib 2658 paths then non-multilib paths, otherwise do not search multilib paths. 2659 Return 0 if not found, otherwise return its name, allocated with malloc. */ 2660 2661static char * 2662find_a_file (const struct path_prefix *pprefix, const char *name, int mode, 2663 bool do_multi) 2664{ 2665 struct file_at_path_info info; 2666 2667#ifdef DEFAULT_ASSEMBLER 2668 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0) 2669 return xstrdup (DEFAULT_ASSEMBLER); 2670#endif 2671 2672#ifdef DEFAULT_LINKER 2673 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0) 2674 return xstrdup (DEFAULT_LINKER); 2675#endif 2676 2677 /* Determine the filename to execute (special case for absolute paths). */ 2678 2679 if (IS_ABSOLUTE_PATH (name)) 2680 { 2681 if (access (name, mode) == 0) 2682 return xstrdup (name); 2683 2684 return NULL; 2685 } 2686 2687 info.name = name; 2688 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : ""; 2689 info.name_len = strlen (info.name); 2690 info.suffix_len = strlen (info.suffix); 2691 info.mode = mode; 2692 2693 return for_each_path (pprefix, do_multi, info.name_len + info.suffix_len, 2694 file_at_path, &info); 2695} 2696 2697/* Ranking of prefixes in the sort list. -B prefixes are put before 2698 all others. */ 2699 2700enum path_prefix_priority 2701{ 2702 PREFIX_PRIORITY_B_OPT, 2703 PREFIX_PRIORITY_LAST 2704}; 2705 2706/* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending 2707 order according to PRIORITY. Within each PRIORITY, new entries are 2708 appended. 2709 2710 If WARN is nonzero, we will warn if no file is found 2711 through this prefix. WARN should point to an int 2712 which will be set to 1 if this entry is used. 2713 2714 COMPONENT is the value to be passed to update_path. 2715 2716 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without 2717 the complete value of machine_suffix. 2718 2 means try both machine_suffix and just_machine_suffix. */ 2719 2720static void 2721add_prefix (struct path_prefix *pprefix, const char *prefix, 2722 const char *component, /* enum prefix_priority */ int priority, 2723 int require_machine_suffix, int os_multilib) 2724{ 2725 struct prefix_list *pl, **prev; 2726 int len; 2727 2728 for (prev = &pprefix->plist; 2729 (*prev) != NULL && (*prev)->priority <= priority; 2730 prev = &(*prev)->next) 2731 ; 2732 2733 /* Keep track of the longest prefix. */ 2734 2735 prefix = update_path (prefix, component); 2736 len = strlen (prefix); 2737 if (len > pprefix->max_len) 2738 pprefix->max_len = len; 2739 2740 pl = XNEW (struct prefix_list); 2741 pl->prefix = prefix; 2742 pl->require_machine_suffix = require_machine_suffix; 2743 pl->priority = priority; 2744 pl->os_multilib = os_multilib; 2745 2746 /* Insert after PREV. */ 2747 pl->next = (*prev); 2748 (*prev) = pl; 2749} 2750 2751/* Same as add_prefix, but prepending target_system_root to prefix. */ 2752static void 2753add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix, 2754 const char *component, 2755 /* enum prefix_priority */ int priority, 2756 int require_machine_suffix, int os_multilib) 2757{ 2758 if (!IS_ABSOLUTE_PATH (prefix)) 2759 fatal ("system path '%s' is not absolute", prefix); 2760 2761 if (target_system_root) 2762 { 2763 if (target_sysroot_suffix) 2764 prefix = concat (target_sysroot_suffix, prefix, NULL); 2765 prefix = concat (target_system_root, prefix, NULL); 2766 2767 /* We have to override this because GCC's notion of sysroot 2768 moves along with GCC. */ 2769 component = "GCC"; 2770 } 2771 2772 add_prefix (pprefix, prefix, component, priority, 2773 require_machine_suffix, os_multilib); 2774} 2775 2776/* Execute the command specified by the arguments on the current line of spec. 2777 When using pipes, this includes several piped-together commands 2778 with `|' between them. 2779 2780 Return 0 if successful, -1 if failed. */ 2781 2782static int 2783execute (void) 2784{ 2785 int i; 2786 int n_commands; /* # of command. */ 2787 char *string; 2788 struct pex_obj *pex; 2789 struct command 2790 { 2791 const char *prog; /* program name. */ 2792 const char **argv; /* vector of args. */ 2793 }; 2794 2795 struct command *commands; /* each command buffer with above info. */ 2796 2797 gcc_assert (!processing_spec_function); 2798 2799 /* Count # of piped commands. */ 2800 for (n_commands = 1, i = 0; i < argbuf_index; i++) 2801 if (strcmp (argbuf[i], "|") == 0) 2802 n_commands++; 2803 2804 /* Get storage for each command. */ 2805 commands = alloca (n_commands * sizeof (struct command)); 2806 2807 /* Split argbuf into its separate piped processes, 2808 and record info about each one. 2809 Also search for the programs that are to be run. */ 2810 2811 commands[0].prog = argbuf[0]; /* first command. */ 2812 commands[0].argv = &argbuf[0]; 2813 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false); 2814 2815 if (string) 2816 commands[0].argv[0] = string; 2817 2818 for (n_commands = 1, i = 0; i < argbuf_index; i++) 2819 if (strcmp (argbuf[i], "|") == 0) 2820 { /* each command. */ 2821#if defined (__MSDOS__) || defined (OS2) || defined (VMS) 2822 fatal ("-pipe not supported"); 2823#endif 2824 argbuf[i] = 0; /* termination of command args. */ 2825 commands[n_commands].prog = argbuf[i + 1]; 2826 commands[n_commands].argv = &argbuf[i + 1]; 2827 string = find_a_file (&exec_prefixes, commands[n_commands].prog, 2828 X_OK, false); 2829 if (string) 2830 commands[n_commands].argv[0] = string; 2831 n_commands++; 2832 } 2833 2834 argbuf[argbuf_index] = 0; 2835 2836 /* If -v, print what we are about to do, and maybe query. */ 2837 2838 if (verbose_flag) 2839 { 2840 /* For help listings, put a blank line between sub-processes. */ 2841 if (print_help_list) 2842 fputc ('\n', stderr); 2843 2844 /* Print each piped command as a separate line. */ 2845 for (i = 0; i < n_commands; i++) 2846 { 2847 const char *const *j; 2848 2849 if (verbose_only_flag) 2850 { 2851 for (j = commands[i].argv; *j; j++) 2852 { 2853 const char *p; 2854 fprintf (stderr, " \""); 2855 for (p = *j; *p; ++p) 2856 { 2857 if (*p == '"' || *p == '\\' || *p == '$') 2858 fputc ('\\', stderr); 2859 fputc (*p, stderr); 2860 } 2861 fputc ('"', stderr); 2862 } 2863 } 2864 else 2865 for (j = commands[i].argv; *j; j++) 2866 fprintf (stderr, " %s", *j); 2867 2868 /* Print a pipe symbol after all but the last command. */ 2869 if (i + 1 != n_commands) 2870 fprintf (stderr, " |"); 2871 fprintf (stderr, "\n"); 2872 } 2873 fflush (stderr); 2874 if (verbose_only_flag != 0) 2875 { 2876 /* verbose_only_flag should act as if the spec was 2877 executed, so increment execution_count before 2878 returning. This prevents spurious warnings about 2879 unused linker input files, etc. */ 2880 execution_count++; 2881 return 0; 2882 } 2883#ifdef DEBUG 2884 notice ("\nGo ahead? (y or n) "); 2885 fflush (stderr); 2886 i = getchar (); 2887 if (i != '\n') 2888 while (getchar () != '\n') 2889 ; 2890 2891 if (i != 'y' && i != 'Y') 2892 return 0; 2893#endif /* DEBUG */ 2894 } 2895 2896#ifdef ENABLE_VALGRIND_CHECKING 2897 /* Run the each command through valgrind. To simplify prepending the 2898 path to valgrind and the option "-q" (for quiet operation unless 2899 something triggers), we allocate a separate argv array. */ 2900 2901 for (i = 0; i < n_commands; i++) 2902 { 2903 const char **argv; 2904 int argc; 2905 int j; 2906 2907 for (argc = 0; commands[i].argv[argc] != NULL; argc++) 2908 ; 2909 2910 argv = alloca ((argc + 3) * sizeof (char *)); 2911 2912 argv[0] = VALGRIND_PATH; 2913 argv[1] = "-q"; 2914 for (j = 2; j < argc + 2; j++) 2915 argv[j] = commands[i].argv[j - 2]; 2916 argv[j] = NULL; 2917 2918 commands[i].argv = argv; 2919 commands[i].prog = argv[0]; 2920 } 2921#endif 2922 2923 /* Run each piped subprocess. */ 2924 2925 pex = pex_init (PEX_USE_PIPES | (report_times ? PEX_RECORD_TIMES : 0), 2926 programname, temp_filename); 2927 if (pex == NULL) 2928 pfatal_with_name (_("pex_init failed")); 2929 2930 for (i = 0; i < n_commands; i++) 2931 { 2932 const char *errmsg; 2933 int err; 2934 const char *string = commands[i].argv[0]; 2935 2936 errmsg = pex_run (pex, 2937 ((i + 1 == n_commands ? PEX_LAST : 0) 2938 | (string == commands[i].prog ? PEX_SEARCH : 0)), 2939 string, (char * const *) commands[i].argv, 2940 NULL, NULL, &err); 2941 if (errmsg != NULL) 2942 { 2943 if (err == 0) 2944 fatal (errmsg); 2945 else 2946 { 2947 errno = err; 2948 pfatal_with_name (errmsg); 2949 } 2950 } 2951 2952 if (string != commands[i].prog) 2953 free ((void *) string); 2954 } 2955 2956 execution_count++; 2957 2958 /* Wait for all the subprocesses to finish. */ 2959 2960 { 2961 int *statuses; 2962 struct pex_time *times = NULL; 2963 int ret_code = 0; 2964 2965 statuses = alloca (n_commands * sizeof (int)); 2966 if (!pex_get_status (pex, n_commands, statuses)) 2967 pfatal_with_name (_("failed to get exit status")); 2968 2969 if (report_times) 2970 { 2971 times = alloca (n_commands * sizeof (struct pex_time)); 2972 if (!pex_get_times (pex, n_commands, times)) 2973 pfatal_with_name (_("failed to get process times")); 2974 } 2975 2976 pex_free (pex); 2977 2978 for (i = 0; i < n_commands; ++i) 2979 { 2980 int status = statuses[i]; 2981 2982 if (WIFSIGNALED (status)) 2983 { 2984#ifdef SIGPIPE 2985 /* SIGPIPE is a special case. It happens in -pipe mode 2986 when the compiler dies before the preprocessor is done, 2987 or the assembler dies before the compiler is done. 2988 There's generally been an error already, and this is 2989 just fallout. So don't generate another error unless 2990 we would otherwise have succeeded. */ 2991 if (WTERMSIG (status) == SIGPIPE 2992 && (signal_count || greatest_status >= MIN_FATAL_STATUS)) 2993 { 2994 signal_count++; 2995 ret_code = -1; 2996 } 2997 else 2998#endif 2999 fatal_ice ("\ 3000Internal error: %s (program %s)\n\ 3001Please submit a full bug report.\n\ 3002See %s for instructions.", 3003 strsignal (WTERMSIG (status)), commands[i].prog, 3004 bug_report_url); 3005 } 3006 else if (WIFEXITED (status) 3007 && WEXITSTATUS (status) >= MIN_FATAL_STATUS) 3008 { 3009 if (WEXITSTATUS (status) > greatest_status) 3010 greatest_status = WEXITSTATUS (status); 3011 ret_code = -1; 3012 } 3013 3014 if (report_times) 3015 { 3016 struct pex_time *pt = ×[i]; 3017 double ut, st; 3018 3019 ut = ((double) pt->user_seconds 3020 + (double) pt->user_microseconds / 1.0e6); 3021 st = ((double) pt->system_seconds 3022 + (double) pt->system_microseconds / 1.0e6); 3023 3024 if (ut + st != 0) 3025 notice ("# %s %.2f %.2f\n", commands[i].prog, ut, st); 3026 } 3027 } 3028 3029 return ret_code; 3030 } 3031} 3032 3033/* Find all the switches given to us 3034 and make a vector describing them. 3035 The elements of the vector are strings, one per switch given. 3036 If a switch uses following arguments, then the `part1' field 3037 is the switch itself and the `args' field 3038 is a null-terminated vector containing the following arguments. 3039 The `live_cond' field is: 3040 0 when initialized 3041 1 if the switch is true in a conditional spec, 3042 -1 if false (overridden by a later switch) 3043 -2 if this switch should be ignored (used in %<S) 3044 The `validated' field is nonzero if any spec has looked at this switch; 3045 if it remains zero at the end of the run, it must be meaningless. */ 3046 3047#define SWITCH_OK 0 3048#define SWITCH_FALSE -1 3049#define SWITCH_IGNORE -2 3050#define SWITCH_LIVE 1 3051 3052struct switchstr 3053{ 3054 const char *part1; 3055 const char **args; 3056 int live_cond; 3057 unsigned char validated; 3058 unsigned char ordering; 3059}; 3060 3061static struct switchstr *switches; 3062 3063static int n_switches; 3064 3065/* Language is one of three things: 3066 3067 1) The name of a real programming language. 3068 2) NULL, indicating that no one has figured out 3069 what it is yet. 3070 3) '*', indicating that the file should be passed 3071 to the linker. */ 3072struct infile 3073{ 3074 const char *name; 3075 const char *language; 3076 struct compiler *incompiler; 3077 bool compiled; 3078 bool preprocessed; 3079}; 3080 3081/* Also a vector of input files specified. */ 3082 3083static struct infile *infiles; 3084 3085int n_infiles; 3086 3087/* True if multiple input files are being compiled to a single 3088 assembly file. */ 3089 3090static bool combine_inputs; 3091 3092/* This counts the number of libraries added by lang_specific_driver, so that 3093 we can tell if there were any user supplied any files or libraries. */ 3094 3095static int added_libraries; 3096 3097/* And a vector of corresponding output files is made up later. */ 3098 3099const char **outfiles; 3100 3101#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3102 3103/* Convert NAME to a new name if it is the standard suffix. DO_EXE 3104 is true if we should look for an executable suffix. DO_OBJ 3105 is true if we should look for an object suffix. */ 3106 3107static const char * 3108convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED, 3109 int do_obj ATTRIBUTE_UNUSED) 3110{ 3111#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3112 int i; 3113#endif 3114 int len; 3115 3116 if (name == NULL) 3117 return NULL; 3118 3119 len = strlen (name); 3120 3121#ifdef HAVE_TARGET_OBJECT_SUFFIX 3122 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */ 3123 if (do_obj && len > 2 3124 && name[len - 2] == '.' 3125 && name[len - 1] == 'o') 3126 { 3127 obstack_grow (&obstack, name, len - 2); 3128 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); 3129 name = XOBFINISH (&obstack, const char *); 3130 } 3131#endif 3132 3133#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3134 /* If there is no filetype, make it the executable suffix (which includes 3135 the "."). But don't get confused if we have just "-o". */ 3136 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-')) 3137 return name; 3138 3139 for (i = len - 1; i >= 0; i--) 3140 if (IS_DIR_SEPARATOR (name[i])) 3141 break; 3142 3143 for (i++; i < len; i++) 3144 if (name[i] == '.') 3145 return name; 3146 3147 obstack_grow (&obstack, name, len); 3148 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX, 3149 strlen (TARGET_EXECUTABLE_SUFFIX)); 3150 name = XOBFINISH (&obstack, const char *); 3151#endif 3152 3153 return name; 3154} 3155#endif 3156 3157/* Display the command line switches accepted by gcc. */ 3158static void 3159display_help (void) 3160{ 3161 printf (_("Usage: %s [options] file...\n"), programname); 3162 fputs (_("Options:\n"), stdout); 3163 3164 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout); 3165 fputs (_(" --help Display this information\n"), stdout); 3166 fputs (_(" --target-help Display target specific command line options\n"), stdout); 3167 if (! verbose_flag) 3168 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout); 3169 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout); 3170 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout); 3171 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout); 3172 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout); 3173 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout); 3174 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout); 3175 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout); 3176 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout); 3177 fputs (_("\ 3178 -print-multi-lib Display the mapping between command line options and\n\ 3179 multiple library search directories\n"), stdout); 3180 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout); 3181 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout); 3182 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout); 3183 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout); 3184 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout); 3185 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout); 3186 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout); 3187 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout); 3188 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout); 3189 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout); 3190 fputs (_(" -time Time the execution of each subprocess\n"), stdout); 3191 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout); 3192 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout); 3193 fputs (_("\ 3194 --sysroot=<directory> Use <directory> as the root directory for headers\n\ 3195 and libraries\n"), stdout); 3196 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout); 3197 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout); 3198 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout); 3199 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout); 3200 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout); 3201 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout); 3202 fputs (_(" -S Compile only; do not assemble or link\n"), stdout); 3203 fputs (_(" -c Compile and assemble, but do not link\n"), stdout); 3204 fputs (_(" -o <file> Place the output into <file>\n"), stdout); 3205 fputs (_("\ 3206 -x <language> Specify the language of the following input files\n\ 3207 Permissible languages include: c c++ assembler none\n\ 3208 'none' means revert to the default behavior of\n\ 3209 guessing the language based on the file's extension\n\ 3210"), stdout); 3211 3212 printf (_("\ 3213\nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ 3214 passed on to the various sub-processes invoked by %s. In order to pass\n\ 3215 other options on to these processes the -W<letter> options must be used.\n\ 3216"), programname); 3217 3218 /* The rest of the options are displayed by invocations of the various 3219 sub-processes. */ 3220} 3221 3222static void 3223add_preprocessor_option (const char *option, int len) 3224{ 3225 n_preprocessor_options++; 3226 3227 if (! preprocessor_options) 3228 preprocessor_options = XNEWVEC (char *, n_preprocessor_options); 3229 else 3230 preprocessor_options = xrealloc (preprocessor_options, 3231 n_preprocessor_options * sizeof (char *)); 3232 3233 preprocessor_options [n_preprocessor_options - 1] = 3234 save_string (option, len); 3235} 3236 3237static void 3238add_assembler_option (const char *option, int len) 3239{ 3240 n_assembler_options++; 3241 3242 if (! assembler_options) 3243 assembler_options = XNEWVEC (char *, n_assembler_options); 3244 else 3245 assembler_options = xrealloc (assembler_options, 3246 n_assembler_options * sizeof (char *)); 3247 3248 assembler_options [n_assembler_options - 1] = save_string (option, len); 3249} 3250 3251static void 3252add_linker_option (const char *option, int len) 3253{ 3254 n_linker_options++; 3255 3256 if (! linker_options) 3257 linker_options = XNEWVEC (char *, n_linker_options); 3258 else 3259 linker_options = xrealloc (linker_options, 3260 n_linker_options * sizeof (char *)); 3261 3262 linker_options [n_linker_options - 1] = save_string (option, len); 3263} 3264 3265/* Create the vector `switches' and its contents. 3266 Store its length in `n_switches'. */ 3267 3268static void 3269process_command (int argc, const char **argv) 3270{ 3271 int i; 3272 const char *temp; 3273 char *temp1; 3274 const char *spec_lang = 0; 3275 int last_language_n_infiles; 3276 int lang_n_infiles = 0; 3277#ifdef MODIFY_TARGET_NAME 3278 int is_modify_target_name; 3279 unsigned int j; 3280#endif 3281 3282 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX"); 3283 3284 n_switches = 0; 3285 n_infiles = 0; 3286 added_libraries = 0; 3287 3288 /* Figure compiler version from version string. */ 3289 3290 compiler_version = temp1 = xstrdup (version_string); 3291 3292 for (; *temp1; ++temp1) 3293 { 3294 if (*temp1 == ' ') 3295 { 3296 *temp1 = '\0'; 3297 break; 3298 } 3299 } 3300 3301 /* If there is a -V or -b option (or both), process it now, before 3302 trying to interpret the rest of the command line. 3303 Use heuristic that all configuration names must have at least 3304 one dash '-'. This allows us to pass options starting with -b. */ 3305 if (argc > 1 && argv[1][0] == '-' 3306 && (argv[1][1] == 'V' || 3307 ((argv[1][1] == 'b') && (NULL != strchr(argv[1] + 2,'-'))))) 3308 { 3309 const char *new_version = DEFAULT_TARGET_VERSION; 3310 const char *new_machine = DEFAULT_TARGET_MACHINE; 3311 const char *progname = argv[0]; 3312 char **new_argv; 3313 char *new_argv0; 3314 int baselen; 3315 3316 while (argc > 1 && argv[1][0] == '-' 3317 && (argv[1][1] == 'V' || 3318 ((argv[1][1] == 'b') && ( NULL != strchr(argv[1] + 2,'-'))))) 3319 { 3320 char opt = argv[1][1]; 3321 const char *arg; 3322 if (argv[1][2] != '\0') 3323 { 3324 arg = argv[1] + 2; 3325 argc -= 1; 3326 argv += 1; 3327 } 3328 else if (argc > 2) 3329 { 3330 arg = argv[2]; 3331 argc -= 2; 3332 argv += 2; 3333 } 3334 else 3335 fatal ("'-%c' option must have argument", opt); 3336 if (opt == 'V') 3337 new_version = arg; 3338 else 3339 new_machine = arg; 3340 } 3341 3342 for (baselen = strlen (progname); baselen > 0; baselen--) 3343 if (IS_DIR_SEPARATOR (progname[baselen-1])) 3344 break; 3345 new_argv0 = xmemdup (progname, baselen, 3346 baselen + concat_length (new_version, new_machine, 3347 "-gcc-", NULL) + 1); 3348 strcpy (new_argv0 + baselen, new_machine); 3349 strcat (new_argv0, "-gcc-"); 3350 strcat (new_argv0, new_version); 3351 3352 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]), 3353 (argc + 1) * sizeof (argv[0])); 3354 new_argv[0] = new_argv0; 3355 3356 execvp (new_argv0, new_argv); 3357 fatal ("couldn't run '%s': %s", new_argv0, xstrerror (errno)); 3358 } 3359 3360 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX, 3361 see if we can create it from the pathname specified in argv[0]. */ 3362 3363 gcc_libexec_prefix = standard_libexec_prefix; 3364#ifndef VMS 3365 /* FIXME: make_relative_prefix doesn't yet work for VMS. */ 3366 if (!gcc_exec_prefix) 3367 { 3368 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix, 3369 standard_exec_prefix); 3370 gcc_libexec_prefix = make_relative_prefix (argv[0], 3371 standard_bindir_prefix, 3372 standard_libexec_prefix); 3373 if (gcc_exec_prefix) 3374 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL)); 3375 } 3376 else 3377 { 3378 /* make_relative_prefix requires a program name, but 3379 GCC_EXEC_PREFIX is typically a directory name with a trailing 3380 / (which is ignored by make_relative_prefix), so append a 3381 program name. */ 3382 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL); 3383 gcc_libexec_prefix = make_relative_prefix (tmp_prefix, 3384 standard_exec_prefix, 3385 standard_libexec_prefix); 3386 free (tmp_prefix); 3387 } 3388#else 3389#endif 3390 3391 if (gcc_exec_prefix) 3392 { 3393 int len = strlen (gcc_exec_prefix); 3394 3395 if (len > (int) sizeof ("/lib/gcc/") - 1 3396 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1]))) 3397 { 3398 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1; 3399 if (IS_DIR_SEPARATOR (*temp) 3400 && strncmp (temp + 1, "lib", 3) == 0 3401 && IS_DIR_SEPARATOR (temp[4]) 3402 && strncmp (temp + 5, "gcc", 3) == 0) 3403 len -= sizeof ("/lib/gcc/") - 1; 3404 } 3405 3406 set_std_prefix (gcc_exec_prefix, len); 3407 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC", 3408 PREFIX_PRIORITY_LAST, 0, 0); 3409 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC", 3410 PREFIX_PRIORITY_LAST, 0, 0); 3411 } 3412 3413 /* COMPILER_PATH and LIBRARY_PATH have values 3414 that are lists of directory names with colons. */ 3415 3416 GET_ENVIRONMENT (temp, "COMPILER_PATH"); 3417 if (temp) 3418 { 3419 const char *startp, *endp; 3420 char *nstore = alloca (strlen (temp) + 3); 3421 3422 startp = endp = temp; 3423 while (1) 3424 { 3425 if (*endp == PATH_SEPARATOR || *endp == 0) 3426 { 3427 strncpy (nstore, startp, endp - startp); 3428 if (endp == startp) 3429 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3430 else if (!IS_DIR_SEPARATOR (endp[-1])) 3431 { 3432 nstore[endp - startp] = DIR_SEPARATOR; 3433 nstore[endp - startp + 1] = 0; 3434 } 3435 else 3436 nstore[endp - startp] = 0; 3437 add_prefix (&exec_prefixes, nstore, 0, 3438 PREFIX_PRIORITY_LAST, 0, 0); 3439 add_prefix (&include_prefixes, nstore, 0, 3440 PREFIX_PRIORITY_LAST, 0, 0); 3441 if (*endp == 0) 3442 break; 3443 endp = startp = endp + 1; 3444 } 3445 else 3446 endp++; 3447 } 3448 } 3449 3450 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV); 3451 if (temp && *cross_compile == '0') 3452 { 3453 const char *startp, *endp; 3454 char *nstore = alloca (strlen (temp) + 3); 3455 3456 startp = endp = temp; 3457 while (1) 3458 { 3459 if (*endp == PATH_SEPARATOR || *endp == 0) 3460 { 3461 strncpy (nstore, startp, endp - startp); 3462 if (endp == startp) 3463 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3464 else if (!IS_DIR_SEPARATOR (endp[-1])) 3465 { 3466 nstore[endp - startp] = DIR_SEPARATOR; 3467 nstore[endp - startp + 1] = 0; 3468 } 3469 else 3470 nstore[endp - startp] = 0; 3471 add_prefix (&startfile_prefixes, nstore, NULL, 3472 PREFIX_PRIORITY_LAST, 0, 1); 3473 if (*endp == 0) 3474 break; 3475 endp = startp = endp + 1; 3476 } 3477 else 3478 endp++; 3479 } 3480 } 3481 3482 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ 3483 GET_ENVIRONMENT (temp, "LPATH"); 3484 if (temp && *cross_compile == '0') 3485 { 3486 const char *startp, *endp; 3487 char *nstore = alloca (strlen (temp) + 3); 3488 3489 startp = endp = temp; 3490 while (1) 3491 { 3492 if (*endp == PATH_SEPARATOR || *endp == 0) 3493 { 3494 strncpy (nstore, startp, endp - startp); 3495 if (endp == startp) 3496 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3497 else if (!IS_DIR_SEPARATOR (endp[-1])) 3498 { 3499 nstore[endp - startp] = DIR_SEPARATOR; 3500 nstore[endp - startp + 1] = 0; 3501 } 3502 else 3503 nstore[endp - startp] = 0; 3504 add_prefix (&startfile_prefixes, nstore, NULL, 3505 PREFIX_PRIORITY_LAST, 0, 1); 3506 if (*endp == 0) 3507 break; 3508 endp = startp = endp + 1; 3509 } 3510 else 3511 endp++; 3512 } 3513 } 3514 3515 /* Convert new-style -- options to old-style. */ 3516 translate_options (&argc, (const char *const **) &argv); 3517 3518 /* Do language-specific adjustment/addition of flags. */ 3519 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries); 3520 3521 /* Scan argv twice. Here, the first time, just count how many switches 3522 there will be in their vector, and how many input files in theirs. 3523 Here we also parse the switches that cc itself uses (e.g. -v). */ 3524 3525 for (i = 1; i < argc; i++) 3526 { 3527 if (! strcmp (argv[i], "-dumpspecs")) 3528 { 3529 struct spec_list *sl; 3530 init_spec (); 3531 for (sl = specs; sl; sl = sl->next) 3532 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec)); 3533 if (link_command_spec) 3534 printf ("*link_command:\n%s\n\n", link_command_spec); 3535 exit (0); 3536 } 3537 else if (! strcmp (argv[i], "-dumpversion")) 3538 { 3539 printf ("%s\n", spec_version); 3540 exit (0); 3541 } 3542 else if (! strcmp (argv[i], "-dumpmachine")) 3543 { 3544 printf ("%s\n", spec_machine); 3545 exit (0); 3546 } 3547 else if (strcmp (argv[i], "-fversion") == 0) 3548 { 3549 /* translate_options () has turned --version into -fversion. */ 3550 printf (_("%s (GCC) %s\n"), programname, version_string); 3551 printf ("Copyright %s 2007 Free Software Foundation, Inc.\n", 3552 _("(C)")); 3553 fputs (_("This is free software; see the source for copying conditions. There is NO\n\ 3554warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"), 3555 stdout); 3556 exit (0); 3557 } 3558 else if (strcmp (argv[i], "-fhelp") == 0) 3559 { 3560 /* translate_options () has turned --help into -fhelp. */ 3561 print_help_list = 1; 3562 3563 /* We will be passing a dummy file on to the sub-processes. */ 3564 n_infiles++; 3565 n_switches++; 3566 3567 /* CPP driver cannot obtain switch from cc1_options. */ 3568 if (is_cpp_driver) 3569 add_preprocessor_option ("--help", 6); 3570 add_assembler_option ("--help", 6); 3571 add_linker_option ("--help", 6); 3572 } 3573 else if (strcmp (argv[i], "-ftarget-help") == 0) 3574 { 3575 /* translate_options() has turned --target-help into -ftarget-help. */ 3576 target_help_flag = 1; 3577 3578 /* We will be passing a dummy file on to the sub-processes. */ 3579 n_infiles++; 3580 n_switches++; 3581 3582 /* CPP driver cannot obtain switch from cc1_options. */ 3583 if (is_cpp_driver) 3584 add_preprocessor_option ("--target-help", 13); 3585 add_assembler_option ("--target-help", 13); 3586 add_linker_option ("--target-help", 13); 3587 } 3588 else if (! strcmp (argv[i], "-pass-exit-codes")) 3589 { 3590 pass_exit_codes = 1; 3591 n_switches++; 3592 } 3593 else if (! strcmp (argv[i], "-print-search-dirs")) 3594 print_search_dirs = 1; 3595 else if (! strcmp (argv[i], "-print-libgcc-file-name")) 3596 print_file_name = "libgcc.a"; 3597 else if (! strncmp (argv[i], "-print-file-name=", 17)) 3598 print_file_name = argv[i] + 17; 3599 else if (! strncmp (argv[i], "-print-prog-name=", 17)) 3600 print_prog_name = argv[i] + 17; 3601 else if (! strcmp (argv[i], "-print-multi-lib")) 3602 print_multi_lib = 1; 3603 else if (! strcmp (argv[i], "-print-multi-directory")) 3604 print_multi_directory = 1; 3605 else if (! strcmp (argv[i], "-print-multi-os-directory")) 3606 print_multi_os_directory = 1; 3607 else if (! strncmp (argv[i], "-Wa,", 4)) 3608 { 3609 int prev, j; 3610 /* Pass the rest of this option to the assembler. */ 3611 3612 /* Split the argument at commas. */ 3613 prev = 4; 3614 for (j = 4; argv[i][j]; j++) 3615 if (argv[i][j] == ',') 3616 { 3617 add_assembler_option (argv[i] + prev, j - prev); 3618 prev = j + 1; 3619 } 3620 3621 /* Record the part after the last comma. */ 3622 add_assembler_option (argv[i] + prev, j - prev); 3623 } 3624 else if (! strncmp (argv[i], "-Wp,", 4)) 3625 { 3626 int prev, j; 3627 /* Pass the rest of this option to the preprocessor. */ 3628 3629 /* Split the argument at commas. */ 3630 prev = 4; 3631 for (j = 4; argv[i][j]; j++) 3632 if (argv[i][j] == ',') 3633 { 3634 add_preprocessor_option (argv[i] + prev, j - prev); 3635 prev = j + 1; 3636 } 3637 3638 /* Record the part after the last comma. */ 3639 add_preprocessor_option (argv[i] + prev, j - prev); 3640 } 3641 else if (argv[i][0] == '+' && argv[i][1] == 'e') 3642 /* The +e options to the C++ front-end. */ 3643 n_switches++; 3644 else if (strncmp (argv[i], "-Wl,", 4) == 0) 3645 { 3646 int j; 3647 /* Split the argument at commas. */ 3648 for (j = 3; argv[i][j]; j++) 3649 n_infiles += (argv[i][j] == ','); 3650 } 3651 else if (strcmp (argv[i], "-Xlinker") == 0) 3652 { 3653 if (i + 1 == argc) 3654 fatal ("argument to '-Xlinker' is missing"); 3655 3656 n_infiles++; 3657 i++; 3658 } 3659 else if (strcmp (argv[i], "-Xpreprocessor") == 0) 3660 { 3661 if (i + 1 == argc) 3662 fatal ("argument to '-Xpreprocessor' is missing"); 3663 3664 add_preprocessor_option (argv[i+1], strlen (argv[i+1])); 3665 } 3666 else if (strcmp (argv[i], "-Xassembler") == 0) 3667 { 3668 if (i + 1 == argc) 3669 fatal ("argument to '-Xassembler' is missing"); 3670 3671 add_assembler_option (argv[i+1], strlen (argv[i+1])); 3672 } 3673 else if (strcmp (argv[i], "-l") == 0) 3674 { 3675 if (i + 1 == argc) 3676 fatal ("argument to '-l' is missing"); 3677 3678 n_infiles++; 3679 i++; 3680 } 3681 else if (strncmp (argv[i], "-l", 2) == 0) 3682 n_infiles++; 3683 else if (strcmp (argv[i], "-save-temps") == 0) 3684 { 3685 save_temps_flag = 1; 3686 n_switches++; 3687 } 3688 else if (strcmp (argv[i], "-combine") == 0) 3689 { 3690 combine_flag = 1; 3691 n_switches++; 3692 } 3693 else if (strcmp (argv[i], "-specs") == 0) 3694 { 3695 struct user_specs *user = XNEW (struct user_specs); 3696 if (++i >= argc) 3697 fatal ("argument to '-specs' is missing"); 3698 3699 user->next = (struct user_specs *) 0; 3700 user->filename = argv[i]; 3701 if (user_specs_tail) 3702 user_specs_tail->next = user; 3703 else 3704 user_specs_head = user; 3705 user_specs_tail = user; 3706 } 3707 else if (strncmp (argv[i], "-specs=", 7) == 0) 3708 { 3709 struct user_specs *user = XNEW (struct user_specs); 3710 if (strlen (argv[i]) == 7) 3711 fatal ("argument to '-specs=' is missing"); 3712 3713 user->next = (struct user_specs *) 0; 3714 user->filename = argv[i] + 7; 3715 if (user_specs_tail) 3716 user_specs_tail->next = user; 3717 else 3718 user_specs_head = user; 3719 user_specs_tail = user; 3720 } 3721 else if (strcmp (argv[i], "-time") == 0) 3722 report_times = 1; 3723 else if (strcmp (argv[i], "-pipe") == 0) 3724 { 3725 /* -pipe has to go into the switches array as well as 3726 setting a flag. */ 3727 use_pipes = 1; 3728 n_switches++; 3729 } 3730 else if (strcmp (argv[i], "-###") == 0) 3731 { 3732 /* This is similar to -v except that there is no execution 3733 of the commands and the echoed arguments are quoted. It 3734 is intended for use in shell scripts to capture the 3735 driver-generated command line. */ 3736 verbose_only_flag++; 3737 verbose_flag++; 3738 } 3739 else if (argv[i][0] == '-' && argv[i][1] != 0) 3740 { 3741 const char *p = &argv[i][1]; 3742 int c = *p; 3743 3744 switch (c) 3745 { 3746 case 'b': 3747 if (NULL == strchr(argv[i] + 2, '-')) 3748 goto normal_switch; 3749 3750 /* Fall through. */ 3751 case 'V': 3752 fatal ("'-%c' must come at the start of the command line", c); 3753 break; 3754 3755 case 'B': 3756 { 3757 const char *value; 3758 int len; 3759 3760 if (p[1] == 0 && i + 1 == argc) 3761 fatal ("argument to '-B' is missing"); 3762 if (p[1] == 0) 3763 value = argv[++i]; 3764 else 3765 value = p + 1; 3766 3767 len = strlen (value); 3768 3769 /* Catch the case where the user has forgotten to append a 3770 directory separator to the path. Note, they may be using 3771 -B to add an executable name prefix, eg "i386-elf-", in 3772 order to distinguish between multiple installations of 3773 GCC in the same directory. Hence we must check to see 3774 if appending a directory separator actually makes a 3775 valid directory name. */ 3776 if (! IS_DIR_SEPARATOR (value [len - 1]) 3777 && is_directory (value, false)) 3778 { 3779 char *tmp = XNEWVEC (char, len + 2); 3780 strcpy (tmp, value); 3781 tmp[len] = DIR_SEPARATOR; 3782 tmp[++ len] = 0; 3783 value = tmp; 3784 } 3785 3786 /* As a kludge, if the arg is "[foo/]stageN/", just 3787 add "[foo/]include" to the include prefix. */ 3788 if ((len == 7 3789 || (len > 7 3790 && (IS_DIR_SEPARATOR (value[len - 8])))) 3791 && strncmp (value + len - 7, "stage", 5) == 0 3792 && ISDIGIT (value[len - 2]) 3793 && (IS_DIR_SEPARATOR (value[len - 1]))) 3794 { 3795 if (len == 7) 3796 add_prefix (&include_prefixes, "./", NULL, 3797 PREFIX_PRIORITY_B_OPT, 0, 0); 3798 else 3799 { 3800 char *string = xmalloc (len - 6); 3801 memcpy (string, value, len - 7); 3802 string[len - 7] = 0; 3803 add_prefix (&include_prefixes, string, NULL, 3804 PREFIX_PRIORITY_B_OPT, 0, 0); 3805 } 3806 } 3807 3808 add_prefix (&exec_prefixes, value, NULL, 3809 PREFIX_PRIORITY_B_OPT, 0, 0); 3810 add_prefix (&startfile_prefixes, value, NULL, 3811 PREFIX_PRIORITY_B_OPT, 0, 0); 3812 add_prefix (&include_prefixes, value, NULL, 3813 PREFIX_PRIORITY_B_OPT, 0, 0); 3814 n_switches++; 3815 } 3816 break; 3817 3818 case 'v': /* Print our subcommands and print versions. */ 3819 n_switches++; 3820 /* If they do anything other than exactly `-v', don't set 3821 verbose_flag; rather, continue on to give the error. */ 3822 if (p[1] != 0) 3823 break; 3824 verbose_flag++; 3825 break; 3826 3827 case 'S': 3828 case 'c': 3829 if (p[1] == 0) 3830 { 3831 have_c = 1; 3832 n_switches++; 3833 break; 3834 } 3835 goto normal_switch; 3836 3837 case 'o': 3838 have_o = 1; 3839#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3840 if (! have_c) 3841 { 3842 int skip; 3843 3844 /* Forward scan, just in case -S or -c is specified 3845 after -o. */ 3846 int j = i + 1; 3847 if (p[1] == 0) 3848 ++j; 3849 while (j < argc) 3850 { 3851 if (argv[j][0] == '-') 3852 { 3853 if (SWITCH_CURTAILS_COMPILATION (argv[j][1]) 3854 && argv[j][2] == 0) 3855 { 3856 have_c = 1; 3857 break; 3858 } 3859 else if ((skip = SWITCH_TAKES_ARG (argv[j][1]))) 3860 j += skip - (argv[j][2] != 0); 3861 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1))) 3862 j += skip; 3863 } 3864 j++; 3865 } 3866 } 3867#endif 3868#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX) 3869 if (p[1] == 0) 3870 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0); 3871 else 3872 argv[i] = convert_filename (argv[i], ! have_c, 0); 3873#endif 3874 goto normal_switch; 3875 3876 default: 3877 normal_switch: 3878 3879#ifdef MODIFY_TARGET_NAME 3880 is_modify_target_name = 0; 3881 3882 for (j = 0; j < ARRAY_SIZE (modify_target); j++) 3883 if (! strcmp (argv[i], modify_target[j].sw)) 3884 { 3885 char *new_name = xmalloc (strlen (modify_target[j].str) 3886 + strlen (spec_machine)); 3887 const char *p, *r; 3888 char *q; 3889 int made_addition = 0; 3890 3891 is_modify_target_name = 1; 3892 for (p = spec_machine, q = new_name; *p != 0; ) 3893 { 3894 if (modify_target[j].add_del == DELETE 3895 && (! strncmp (q, modify_target[j].str, 3896 strlen (modify_target[j].str)))) 3897 p += strlen (modify_target[j].str); 3898 else if (modify_target[j].add_del == ADD 3899 && ! made_addition && *p == '-') 3900 { 3901 for (r = modify_target[j].str; *r != 0; ) 3902 *q++ = *r++; 3903 made_addition = 1; 3904 } 3905 3906 *q++ = *p++; 3907 } 3908 3909 spec_machine = new_name; 3910 } 3911 3912 if (is_modify_target_name) 3913 break; 3914#endif 3915 3916 n_switches++; 3917 3918 if (SWITCH_TAKES_ARG (c) > (p[1] != 0)) 3919 i += SWITCH_TAKES_ARG (c) - (p[1] != 0); 3920 else if (WORD_SWITCH_TAKES_ARG (p)) 3921 i += WORD_SWITCH_TAKES_ARG (p); 3922 } 3923 } 3924 else 3925 { 3926 n_infiles++; 3927 lang_n_infiles++; 3928 } 3929 } 3930 3931 if (save_temps_flag && use_pipes) 3932 { 3933 /* -save-temps overrides -pipe, so that temp files are produced */ 3934 if (save_temps_flag) 3935 error ("warning: -pipe ignored because -save-temps specified"); 3936 use_pipes = 0; 3937 } 3938 3939 /* Set up the search paths before we go looking for config files. */ 3940 3941 /* These come before the md prefixes so that we will find gcc's subcommands 3942 (such as cpp) rather than those of the host system. */ 3943 /* Use 2 as fourth arg meaning try just the machine as a suffix, 3944 as well as trying the machine and the version. */ 3945#ifndef OS2 3946 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC", 3947 PREFIX_PRIORITY_LAST, 1, 0); 3948 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS", 3949 PREFIX_PRIORITY_LAST, 2, 0); 3950 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS", 3951 PREFIX_PRIORITY_LAST, 2, 0); 3952 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS", 3953 PREFIX_PRIORITY_LAST, 2, 0); 3954 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS", 3955 PREFIX_PRIORITY_LAST, 2, 0); 3956#endif 3957 3958 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS", 3959 PREFIX_PRIORITY_LAST, 1, 0); 3960 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS", 3961 PREFIX_PRIORITY_LAST, 1, 0); 3962 3963 tooldir_prefix = concat (tooldir_base_prefix, spec_machine, 3964 dir_separator_str, NULL); 3965 3966 /* If tooldir is relative, base it on exec_prefixes. A relative 3967 tooldir lets us move the installed tree as a unit. 3968 3969 If GCC_EXEC_PREFIX is defined, then we want to add two relative 3970 directories, so that we can search both the user specified directory 3971 and the standard place. */ 3972 3973 if (!IS_ABSOLUTE_PATH (tooldir_prefix)) 3974 { 3975 if (gcc_exec_prefix) 3976 { 3977 char *gcc_exec_tooldir_prefix 3978 = concat (gcc_exec_prefix, spec_machine, dir_separator_str, 3979 spec_version, dir_separator_str, tooldir_prefix, NULL); 3980 3981 add_prefix (&exec_prefixes, 3982 concat (gcc_exec_tooldir_prefix, "bin", 3983 dir_separator_str, NULL), 3984 NULL, PREFIX_PRIORITY_LAST, 0, 0); 3985 add_prefix (&startfile_prefixes, 3986 concat (gcc_exec_tooldir_prefix, "lib", 3987 dir_separator_str, NULL), 3988 NULL, PREFIX_PRIORITY_LAST, 0, 1); 3989 } 3990 3991 tooldir_prefix = concat (standard_exec_prefix, spec_machine, 3992 dir_separator_str, spec_version, 3993 dir_separator_str, tooldir_prefix, NULL); 3994 } 3995 3996 add_prefix (&exec_prefixes, 3997 concat (tooldir_prefix, "bin", dir_separator_str, NULL), 3998 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0); 3999 add_prefix (&startfile_prefixes, 4000 concat (tooldir_prefix, "lib", dir_separator_str, NULL), 4001 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1); 4002 4003#if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS) 4004 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix, 4005 then consider it to relocate with the rest of the GCC installation 4006 if GCC_EXEC_PREFIX is set. 4007 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */ 4008 if (target_system_root && gcc_exec_prefix) 4009 { 4010 char *tmp_prefix = make_relative_prefix (argv[0], 4011 standard_bindir_prefix, 4012 target_system_root); 4013 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0) 4014 { 4015 target_system_root = tmp_prefix; 4016 target_system_root_changed = 1; 4017 } 4018 } 4019#endif 4020 4021 /* More prefixes are enabled in main, after we read the specs file 4022 and determine whether this is cross-compilation or not. */ 4023 4024 /* Then create the space for the vectors and scan again. */ 4025 4026 switches = XNEWVEC (struct switchstr, n_switches + 1); 4027 infiles = XNEWVEC (struct infile, n_infiles + 1); 4028 n_switches = 0; 4029 n_infiles = 0; 4030 last_language_n_infiles = -1; 4031 4032 /* This, time, copy the text of each switch and store a pointer 4033 to the copy in the vector of switches. 4034 Store all the infiles in their vector. */ 4035 4036 for (i = 1; i < argc; i++) 4037 { 4038 /* Just skip the switches that were handled by the preceding loop. */ 4039#ifdef MODIFY_TARGET_NAME 4040 is_modify_target_name = 0; 4041 4042 for (j = 0; j < ARRAY_SIZE (modify_target); j++) 4043 if (! strcmp (argv[i], modify_target[j].sw)) 4044 is_modify_target_name = 1; 4045 4046 if (is_modify_target_name) 4047 ; 4048 else 4049#endif 4050 if (! strncmp (argv[i], "-Wa,", 4)) 4051 ; 4052 else if (! strncmp (argv[i], "-Wp,", 4)) 4053 ; 4054 else if (! strcmp (argv[i], "-pass-exit-codes")) 4055 ; 4056 else if (! strcmp (argv[i], "-print-search-dirs")) 4057 ; 4058 else if (! strcmp (argv[i], "-print-libgcc-file-name")) 4059 ; 4060 else if (! strncmp (argv[i], "-print-file-name=", 17)) 4061 ; 4062 else if (! strncmp (argv[i], "-print-prog-name=", 17)) 4063 ; 4064 else if (! strcmp (argv[i], "-print-multi-lib")) 4065 ; 4066 else if (! strcmp (argv[i], "-print-multi-directory")) 4067 ; 4068 else if (! strcmp (argv[i], "-print-multi-os-directory")) 4069 ; 4070 else if (! strcmp (argv[i], "-ftarget-help")) 4071 ; 4072 else if (! strcmp (argv[i], "-fhelp")) 4073 ; 4074 else if (! strncmp (argv[i], "--sysroot=", strlen ("--sysroot="))) 4075 { 4076 target_system_root = argv[i] + strlen ("--sysroot="); 4077 target_system_root_changed = 1; 4078 } 4079 else if (argv[i][0] == '+' && argv[i][1] == 'e') 4080 { 4081 /* Compensate for the +e options to the C++ front-end; 4082 they're there simply for cfront call-compatibility. We do 4083 some magic in default_compilers to pass them down properly. 4084 Note we deliberately start at the `+' here, to avoid passing 4085 -e0 or -e1 down into the linker. */ 4086 switches[n_switches].part1 = &argv[i][0]; 4087 switches[n_switches].args = 0; 4088 switches[n_switches].live_cond = SWITCH_OK; 4089 switches[n_switches].validated = 0; 4090 n_switches++; 4091 } 4092 else if (strncmp (argv[i], "-Wl,", 4) == 0) 4093 { 4094 int prev, j; 4095 /* Split the argument at commas. */ 4096 prev = 4; 4097 for (j = 4; argv[i][j]; j++) 4098 if (argv[i][j] == ',') 4099 { 4100 infiles[n_infiles].language = "*"; 4101 infiles[n_infiles++].name 4102 = save_string (argv[i] + prev, j - prev); 4103 prev = j + 1; 4104 } 4105 /* Record the part after the last comma. */ 4106 infiles[n_infiles].language = "*"; 4107 infiles[n_infiles++].name = argv[i] + prev; 4108 } 4109 else if (strcmp (argv[i], "-Xlinker") == 0) 4110 { 4111 infiles[n_infiles].language = "*"; 4112 infiles[n_infiles++].name = argv[++i]; 4113 } 4114 /* Xassembler and Xpreprocessor were already handled in the first argv 4115 scan, so all we need to do here is ignore them and their argument. */ 4116 else if (strcmp (argv[i], "-Xassembler") == 0) 4117 i++; 4118 else if (strcmp (argv[i], "-Xpreprocessor") == 0) 4119 i++; 4120 else if (strcmp (argv[i], "-l") == 0) 4121 { /* POSIX allows separation of -l and the lib arg; 4122 canonicalize by concatenating -l with its arg */ 4123 infiles[n_infiles].language = "*"; 4124 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL); 4125 } 4126 else if (strncmp (argv[i], "-l", 2) == 0) 4127 { 4128 infiles[n_infiles].language = "*"; 4129 infiles[n_infiles++].name = argv[i]; 4130 } 4131 else if (strcmp (argv[i], "-specs") == 0) 4132 i++; 4133 else if (strncmp (argv[i], "-specs=", 7) == 0) 4134 ; 4135 else if (strcmp (argv[i], "-time") == 0) 4136 ; 4137 else if (strcmp (argv[i], "-###") == 0) 4138 ; 4139 else if (argv[i][0] == '-' && argv[i][1] != 0) 4140 { 4141 const char *p = &argv[i][1]; 4142 int c = *p; 4143 4144 if (c == 'x') 4145 { 4146 if (p[1] == 0 && i + 1 == argc) 4147 fatal ("argument to '-x' is missing"); 4148 if (p[1] == 0) 4149 spec_lang = argv[++i]; 4150 else 4151 spec_lang = p + 1; 4152 if (! strcmp (spec_lang, "none")) 4153 /* Suppress the warning if -xnone comes after the last input 4154 file, because alternate command interfaces like g++ might 4155 find it useful to place -xnone after each input file. */ 4156 spec_lang = 0; 4157 else 4158 last_language_n_infiles = n_infiles; 4159 continue; 4160 } 4161 switches[n_switches].part1 = p; 4162 /* Deal with option arguments in separate argv elements. */ 4163 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0)) 4164 || WORD_SWITCH_TAKES_ARG (p)) 4165 { 4166 int j = 0; 4167 int n_args = WORD_SWITCH_TAKES_ARG (p); 4168 4169 if (n_args == 0) 4170 { 4171 /* Count only the option arguments in separate argv elements. */ 4172 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0); 4173 } 4174 if (i + n_args >= argc) 4175 fatal ("argument to '-%s' is missing", p); 4176 switches[n_switches].args 4177 = XNEWVEC (const char *, n_args + 1); 4178 while (j < n_args) 4179 switches[n_switches].args[j++] = argv[++i]; 4180 /* Null-terminate the vector. */ 4181 switches[n_switches].args[j] = 0; 4182 } 4183 else if (strchr (switches_need_spaces, c)) 4184 { 4185 /* On some systems, ld cannot handle some options without 4186 a space. So split the option from its argument. */ 4187 char *part1 = XNEWVEC (char, 2); 4188 part1[0] = c; 4189 part1[1] = '\0'; 4190 4191 switches[n_switches].part1 = part1; 4192 switches[n_switches].args = XNEWVEC (const char *, 2); 4193 switches[n_switches].args[0] = xstrdup (p+1); 4194 switches[n_switches].args[1] = 0; 4195 } 4196 else 4197 switches[n_switches].args = 0; 4198 4199 switches[n_switches].live_cond = SWITCH_OK; 4200 switches[n_switches].validated = 0; 4201 switches[n_switches].ordering = 0; 4202 /* These are always valid, since gcc.c itself understands them. */ 4203 if (!strcmp (p, "save-temps") 4204 || !strcmp (p, "static-libgcc") 4205 || !strcmp (p, "shared-libgcc") 4206 || !strcmp (p, "pipe")) 4207 switches[n_switches].validated = 1; 4208 else 4209 { 4210 char ch = switches[n_switches].part1[0]; 4211 if (ch == 'B') 4212 switches[n_switches].validated = 1; 4213 } 4214 n_switches++; 4215 } 4216 else 4217 { 4218#ifdef HAVE_TARGET_OBJECT_SUFFIX 4219 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK)); 4220#endif 4221 4222 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0) 4223 { 4224 perror_with_name (argv[i]); 4225 error_count++; 4226 } 4227 else 4228 { 4229 infiles[n_infiles].language = spec_lang; 4230 infiles[n_infiles++].name = argv[i]; 4231 } 4232 } 4233 } 4234 4235 if (n_infiles == last_language_n_infiles && spec_lang != 0) 4236 error ("warning: '-x %s' after last input file has no effect", spec_lang); 4237 4238 /* Ensure we only invoke each subprocess once. */ 4239 if (target_help_flag || print_help_list) 4240 { 4241 n_infiles = 1; 4242 4243 /* Create a dummy input file, so that we can pass --target-help on to 4244 the various sub-processes. */ 4245 infiles[0].language = "c"; 4246 infiles[0].name = "help-dummy"; 4247 4248 if (target_help_flag) 4249 { 4250 switches[n_switches].part1 = "--target-help"; 4251 switches[n_switches].args = 0; 4252 switches[n_switches].live_cond = SWITCH_OK; 4253 switches[n_switches].validated = 0; 4254 4255 n_switches++; 4256 } 4257 4258 if (print_help_list) 4259 { 4260 switches[n_switches].part1 = "--help"; 4261 switches[n_switches].args = 0; 4262 switches[n_switches].live_cond = SWITCH_OK; 4263 switches[n_switches].validated = 0; 4264 4265 n_switches++; 4266 } 4267 } 4268 4269 switches[n_switches].part1 = 0; 4270 infiles[n_infiles].name = 0; 4271} 4272 4273/* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS 4274 and place that in the environment. */ 4275 4276static void 4277set_collect_gcc_options (void) 4278{ 4279 int i; 4280 int first_time; 4281 4282 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to 4283 the compiler. */ 4284 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=", 4285 sizeof ("COLLECT_GCC_OPTIONS=") - 1); 4286 4287 first_time = TRUE; 4288 for (i = 0; (int) i < n_switches; i++) 4289 { 4290 const char *const *args; 4291 const char *p, *q; 4292 if (!first_time) 4293 obstack_grow (&collect_obstack, " ", 1); 4294 4295 first_time = FALSE; 4296 4297 /* Ignore elided switches. */ 4298 if (switches[i].live_cond == SWITCH_IGNORE) 4299 continue; 4300 4301 obstack_grow (&collect_obstack, "'-", 2); 4302 q = switches[i].part1; 4303 while ((p = strchr (q, '\''))) 4304 { 4305 obstack_grow (&collect_obstack, q, p - q); 4306 obstack_grow (&collect_obstack, "'\\''", 4); 4307 q = ++p; 4308 } 4309 obstack_grow (&collect_obstack, q, strlen (q)); 4310 obstack_grow (&collect_obstack, "'", 1); 4311 4312 for (args = switches[i].args; args && *args; args++) 4313 { 4314 obstack_grow (&collect_obstack, " '", 2); 4315 q = *args; 4316 while ((p = strchr (q, '\''))) 4317 { 4318 obstack_grow (&collect_obstack, q, p - q); 4319 obstack_grow (&collect_obstack, "'\\''", 4); 4320 q = ++p; 4321 } 4322 obstack_grow (&collect_obstack, q, strlen (q)); 4323 obstack_grow (&collect_obstack, "'", 1); 4324 } 4325 } 4326 obstack_grow (&collect_obstack, "\0", 1); 4327 putenv (XOBFINISH (&collect_obstack, char *)); 4328} 4329 4330/* Process a spec string, accumulating and running commands. */ 4331 4332/* These variables describe the input file name. 4333 input_file_number is the index on outfiles of this file, 4334 so that the output file name can be stored for later use by %o. 4335 input_basename is the start of the part of the input file 4336 sans all directory names, and basename_length is the number 4337 of characters starting there excluding the suffix .c or whatever. */ 4338 4339static const char *input_filename; 4340static int input_file_number; 4341size_t input_filename_length; 4342static int basename_length; 4343static int suffixed_basename_length; 4344static const char *input_basename; 4345static const char *input_suffix; 4346#ifndef HOST_LACKS_INODE_NUMBERS 4347static struct stat input_stat; 4348#endif 4349static int input_stat_set; 4350 4351/* The compiler used to process the current input file. */ 4352static struct compiler *input_file_compiler; 4353 4354/* These are variables used within do_spec and do_spec_1. */ 4355 4356/* Nonzero if an arg has been started and not yet terminated 4357 (with space, tab or newline). */ 4358static int arg_going; 4359 4360/* Nonzero means %d or %g has been seen; the next arg to be terminated 4361 is a temporary file name. */ 4362static int delete_this_arg; 4363 4364/* Nonzero means %w has been seen; the next arg to be terminated 4365 is the output file name of this compilation. */ 4366static int this_is_output_file; 4367 4368/* Nonzero means %s has been seen; the next arg to be terminated 4369 is the name of a library file and we should try the standard 4370 search dirs for it. */ 4371static int this_is_library_file; 4372 4373/* Nonzero means that the input of this command is coming from a pipe. */ 4374static int input_from_pipe; 4375 4376/* Nonnull means substitute this for any suffix when outputting a switches 4377 arguments. */ 4378static const char *suffix_subst; 4379 4380/* Process the spec SPEC and run the commands specified therein. 4381 Returns 0 if the spec is successfully processed; -1 if failed. */ 4382 4383int 4384do_spec (const char *spec) 4385{ 4386 int value; 4387 4388 value = do_spec_2 (spec); 4389 4390 /* Force out any unfinished command. 4391 If -pipe, this forces out the last command if it ended in `|'. */ 4392 if (value == 0) 4393 { 4394 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|")) 4395 argbuf_index--; 4396 4397 set_collect_gcc_options (); 4398 4399 if (argbuf_index > 0) 4400 value = execute (); 4401 } 4402 4403 return value; 4404} 4405 4406static int 4407do_spec_2 (const char *spec) 4408{ 4409 const char *string; 4410 int result; 4411 4412 clear_args (); 4413 arg_going = 0; 4414 delete_this_arg = 0; 4415 this_is_output_file = 0; 4416 this_is_library_file = 0; 4417 input_from_pipe = 0; 4418 suffix_subst = NULL; 4419 4420 result = do_spec_1 (spec, 0, NULL); 4421 4422 /* End any pending argument. */ 4423 if (arg_going) 4424 { 4425 obstack_1grow (&obstack, 0); 4426 string = XOBFINISH (&obstack, const char *); 4427 if (this_is_library_file) 4428 string = find_file (string); 4429 store_arg (string, delete_this_arg, this_is_output_file); 4430 if (this_is_output_file) 4431 outfiles[input_file_number] = string; 4432 arg_going = 0; 4433 } 4434 4435 return result; 4436} 4437 4438 4439/* Process the given spec string and add any new options to the end 4440 of the switches/n_switches array. */ 4441 4442static void 4443do_option_spec (const char *name, const char *spec) 4444{ 4445 unsigned int i, value_count, value_len; 4446 const char *p, *q, *value; 4447 char *tmp_spec, *tmp_spec_p; 4448 4449 if (configure_default_options[0].name == NULL) 4450 return; 4451 4452 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++) 4453 if (strcmp (configure_default_options[i].name, name) == 0) 4454 break; 4455 if (i == ARRAY_SIZE (configure_default_options)) 4456 return; 4457 4458 value = configure_default_options[i].value; 4459 value_len = strlen (value); 4460 4461 /* Compute the size of the final spec. */ 4462 value_count = 0; 4463 p = spec; 4464 while ((p = strstr (p, "%(VALUE)")) != NULL) 4465 { 4466 p ++; 4467 value_count ++; 4468 } 4469 4470 /* Replace each %(VALUE) by the specified value. */ 4471 tmp_spec = alloca (strlen (spec) + 1 4472 + value_count * (value_len - strlen ("%(VALUE)"))); 4473 tmp_spec_p = tmp_spec; 4474 q = spec; 4475 while ((p = strstr (q, "%(VALUE)")) != NULL) 4476 { 4477 memcpy (tmp_spec_p, q, p - q); 4478 tmp_spec_p = tmp_spec_p + (p - q); 4479 memcpy (tmp_spec_p, value, value_len); 4480 tmp_spec_p += value_len; 4481 q = p + strlen ("%(VALUE)"); 4482 } 4483 strcpy (tmp_spec_p, q); 4484 4485 do_self_spec (tmp_spec); 4486} 4487 4488/* Process the given spec string and add any new options to the end 4489 of the switches/n_switches array. */ 4490 4491static void 4492do_self_spec (const char *spec) 4493{ 4494 do_spec_2 (spec); 4495 do_spec_1 (" ", 0, NULL); 4496 4497 if (argbuf_index > 0) 4498 { 4499 int i, first; 4500 4501 first = n_switches; 4502 n_switches += argbuf_index; 4503 switches = xrealloc (switches, 4504 sizeof (struct switchstr) * (n_switches + 1)); 4505 4506 switches[n_switches] = switches[first]; 4507 for (i = 0; i < argbuf_index; i++) 4508 { 4509 struct switchstr *sw; 4510 4511 /* Each switch should start with '-'. */ 4512 if (argbuf[i][0] != '-') 4513 fatal ("switch '%s' does not start with '-'", argbuf[i]); 4514 4515 sw = &switches[i + first]; 4516 sw->part1 = &argbuf[i][1]; 4517 sw->args = 0; 4518 sw->live_cond = SWITCH_OK; 4519 sw->validated = 0; 4520 sw->ordering = 0; 4521 } 4522 } 4523} 4524 4525/* Callback for processing %D and %I specs. */ 4526 4527struct spec_path_info { 4528 const char *option; 4529 const char *append; 4530 size_t append_len; 4531 bool omit_relative; 4532 bool separate_options; 4533}; 4534 4535static void * 4536spec_path (char *path, void *data) 4537{ 4538 struct spec_path_info *info = data; 4539 size_t len = 0; 4540 char save = 0; 4541 4542 if (info->omit_relative && !IS_ABSOLUTE_PATH (path)) 4543 return NULL; 4544 4545 if (info->append_len != 0) 4546 { 4547 len = strlen (path); 4548 memcpy (path + len, info->append, info->append_len + 1); 4549 } 4550 4551 if (!is_directory (path, true)) 4552 return NULL; 4553 4554 do_spec_1 (info->option, 1, NULL); 4555 if (info->separate_options) 4556 do_spec_1 (" ", 0, NULL); 4557 4558 if (info->append_len == 0) 4559 { 4560 len = strlen (path); 4561 save = path[len - 1]; 4562 if (IS_DIR_SEPARATOR (path[len - 1])) 4563 path[len - 1] = '\0'; 4564 } 4565 4566 do_spec_1 (path, 1, NULL); 4567 do_spec_1 (" ", 0, NULL); 4568 4569 /* Must not damage the original path. */ 4570 if (info->append_len == 0) 4571 path[len - 1] = save; 4572 4573 return NULL; 4574} 4575 4576/* Process the sub-spec SPEC as a portion of a larger spec. 4577 This is like processing a whole spec except that we do 4578 not initialize at the beginning and we do not supply a 4579 newline by default at the end. 4580 INSWITCH nonzero means don't process %-sequences in SPEC; 4581 in this case, % is treated as an ordinary character. 4582 This is used while substituting switches. 4583 INSWITCH nonzero also causes SPC not to terminate an argument. 4584 4585 Value is zero unless a line was finished 4586 and the command on that line reported an error. */ 4587 4588static int 4589do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) 4590{ 4591 const char *p = spec; 4592 int c; 4593 int i; 4594 const char *string; 4595 int value; 4596 4597 while ((c = *p++)) 4598 /* If substituting a switch, treat all chars like letters. 4599 Otherwise, NL, SPC, TAB and % are special. */ 4600 switch (inswitch ? 'a' : c) 4601 { 4602 case '\n': 4603 /* End of line: finish any pending argument, 4604 then run the pending command if one has been started. */ 4605 if (arg_going) 4606 { 4607 obstack_1grow (&obstack, 0); 4608 string = XOBFINISH (&obstack, const char *); 4609 if (this_is_library_file) 4610 string = find_file (string); 4611 store_arg (string, delete_this_arg, this_is_output_file); 4612 if (this_is_output_file) 4613 outfiles[input_file_number] = string; 4614 } 4615 arg_going = 0; 4616 4617 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|")) 4618 { 4619 /* A `|' before the newline means use a pipe here, 4620 but only if -pipe was specified. 4621 Otherwise, execute now and don't pass the `|' as an arg. */ 4622 if (use_pipes) 4623 { 4624 input_from_pipe = 1; 4625 break; 4626 } 4627 else 4628 argbuf_index--; 4629 } 4630 4631 set_collect_gcc_options (); 4632 4633 if (argbuf_index > 0) 4634 { 4635 value = execute (); 4636 if (value) 4637 return value; 4638 } 4639 /* Reinitialize for a new command, and for a new argument. */ 4640 clear_args (); 4641 arg_going = 0; 4642 delete_this_arg = 0; 4643 this_is_output_file = 0; 4644 this_is_library_file = 0; 4645 input_from_pipe = 0; 4646 break; 4647 4648 case '|': 4649 /* End any pending argument. */ 4650 if (arg_going) 4651 { 4652 obstack_1grow (&obstack, 0); 4653 string = XOBFINISH (&obstack, const char *); 4654 if (this_is_library_file) 4655 string = find_file (string); 4656 store_arg (string, delete_this_arg, this_is_output_file); 4657 if (this_is_output_file) 4658 outfiles[input_file_number] = string; 4659 } 4660 4661 /* Use pipe */ 4662 obstack_1grow (&obstack, c); 4663 arg_going = 1; 4664 break; 4665 4666 case '\t': 4667 case ' ': 4668 /* Space or tab ends an argument if one is pending. */ 4669 if (arg_going) 4670 { 4671 obstack_1grow (&obstack, 0); 4672 string = XOBFINISH (&obstack, const char *); 4673 if (this_is_library_file) 4674 string = find_file (string); 4675 store_arg (string, delete_this_arg, this_is_output_file); 4676 if (this_is_output_file) 4677 outfiles[input_file_number] = string; 4678 } 4679 /* Reinitialize for a new argument. */ 4680 arg_going = 0; 4681 delete_this_arg = 0; 4682 this_is_output_file = 0; 4683 this_is_library_file = 0; 4684 break; 4685 4686 case '%': 4687 switch (c = *p++) 4688 { 4689 case 0: 4690 fatal ("spec '%s' invalid", spec); 4691 4692 case 'b': 4693 obstack_grow (&obstack, input_basename, basename_length); 4694 arg_going = 1; 4695 break; 4696 4697 case 'B': 4698 obstack_grow (&obstack, input_basename, suffixed_basename_length); 4699 arg_going = 1; 4700 break; 4701 4702 case 'd': 4703 delete_this_arg = 2; 4704 break; 4705 4706 /* Dump out the directories specified with LIBRARY_PATH, 4707 followed by the absolute directories 4708 that we search for startfiles. */ 4709 case 'D': 4710 { 4711 struct spec_path_info info; 4712 4713 info.option = "-L"; 4714 info.append_len = 0; 4715#ifdef RELATIVE_PREFIX_NOT_LINKDIR 4716 /* Used on systems which record the specified -L dirs 4717 and use them to search for dynamic linking. 4718 Relative directories always come from -B, 4719 and it is better not to use them for searching 4720 at run time. In particular, stage1 loses. */ 4721 info.omit_relative = true; 4722#else 4723 info.omit_relative = false; 4724#endif 4725 info.separate_options = false; 4726 4727 for_each_path (&startfile_prefixes, true, 0, spec_path, &info); 4728 } 4729 break; 4730 4731 case 'e': 4732 /* %efoo means report an error with `foo' as error message 4733 and don't execute any more commands for this file. */ 4734 { 4735 const char *q = p; 4736 char *buf; 4737 while (*p != 0 && *p != '\n') 4738 p++; 4739 buf = alloca (p - q + 1); 4740 strncpy (buf, q, p - q); 4741 buf[p - q] = 0; 4742 error ("%s", buf); 4743 return -1; 4744 } 4745 break; 4746 case 'n': 4747 /* %nfoo means report a notice with `foo' on stderr. */ 4748 { 4749 const char *q = p; 4750 char *buf; 4751 while (*p != 0 && *p != '\n') 4752 p++; 4753 buf = alloca (p - q + 1); 4754 strncpy (buf, q, p - q); 4755 buf[p - q] = 0; 4756 notice ("%s\n", buf); 4757 if (*p) 4758 p++; 4759 } 4760 break; 4761 4762 case 'j': 4763 { 4764 struct stat st; 4765 4766 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is 4767 defined, and it is not a directory, and it is 4768 writable, use it. Otherwise, treat this like any 4769 other temporary file. */ 4770 4771 if ((!save_temps_flag) 4772 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode)) 4773 && (access (HOST_BIT_BUCKET, W_OK) == 0)) 4774 { 4775 obstack_grow (&obstack, HOST_BIT_BUCKET, 4776 strlen (HOST_BIT_BUCKET)); 4777 delete_this_arg = 0; 4778 arg_going = 1; 4779 break; 4780 } 4781 } 4782 goto create_temp_file; 4783 case '|': 4784 if (use_pipes) 4785 { 4786 obstack_1grow (&obstack, '-'); 4787 delete_this_arg = 0; 4788 arg_going = 1; 4789 4790 /* consume suffix */ 4791 while (*p == '.' || ISALNUM ((unsigned char) *p)) 4792 p++; 4793 if (p[0] == '%' && p[1] == 'O') 4794 p += 2; 4795 4796 break; 4797 } 4798 goto create_temp_file; 4799 case 'm': 4800 if (use_pipes) 4801 { 4802 /* consume suffix */ 4803 while (*p == '.' || ISALNUM ((unsigned char) *p)) 4804 p++; 4805 if (p[0] == '%' && p[1] == 'O') 4806 p += 2; 4807 4808 break; 4809 } 4810 goto create_temp_file; 4811 case 'g': 4812 case 'u': 4813 case 'U': 4814 create_temp_file: 4815 { 4816 struct temp_name *t; 4817 int suffix_length; 4818 const char *suffix = p; 4819 char *saved_suffix = NULL; 4820 4821 while (*p == '.' || ISALNUM ((unsigned char) *p)) 4822 p++; 4823 suffix_length = p - suffix; 4824 if (p[0] == '%' && p[1] == 'O') 4825 { 4826 p += 2; 4827 /* We don't support extra suffix characters after %O. */ 4828 if (*p == '.' || ISALNUM ((unsigned char) *p)) 4829 fatal ("spec '%s' has invalid '%%0%c'", spec, *p); 4830 if (suffix_length == 0) 4831 suffix = TARGET_OBJECT_SUFFIX; 4832 else 4833 { 4834 saved_suffix 4835 = XNEWVEC (char, suffix_length 4836 + strlen (TARGET_OBJECT_SUFFIX)); 4837 strncpy (saved_suffix, suffix, suffix_length); 4838 strcpy (saved_suffix + suffix_length, 4839 TARGET_OBJECT_SUFFIX); 4840 } 4841 suffix_length += strlen (TARGET_OBJECT_SUFFIX); 4842 } 4843 4844 /* If the input_filename has the same suffix specified 4845 for the %g, %u, or %U, and -save-temps is specified, 4846 we could end up using that file as an intermediate 4847 thus clobbering the user's source file (.e.g., 4848 gcc -save-temps foo.s would clobber foo.s with the 4849 output of cpp0). So check for this condition and 4850 generate a temp file as the intermediate. */ 4851 4852 if (save_temps_flag) 4853 { 4854 temp_filename_length = basename_length + suffix_length; 4855 temp_filename = alloca (temp_filename_length + 1); 4856 strncpy ((char *) temp_filename, input_basename, basename_length); 4857 strncpy ((char *) temp_filename + basename_length, suffix, 4858 suffix_length); 4859 *((char *) temp_filename + temp_filename_length) = '\0'; 4860 if (strcmp (temp_filename, input_filename) != 0) 4861 { 4862#ifndef HOST_LACKS_INODE_NUMBERS 4863 struct stat st_temp; 4864 4865 /* Note, set_input() resets input_stat_set to 0. */ 4866 if (input_stat_set == 0) 4867 { 4868 input_stat_set = stat (input_filename, &input_stat); 4869 if (input_stat_set >= 0) 4870 input_stat_set = 1; 4871 } 4872 4873 /* If we have the stat for the input_filename 4874 and we can do the stat for the temp_filename 4875 then the they could still refer to the same 4876 file if st_dev/st_ino's are the same. */ 4877 if (input_stat_set != 1 4878 || stat (temp_filename, &st_temp) < 0 4879 || input_stat.st_dev != st_temp.st_dev 4880 || input_stat.st_ino != st_temp.st_ino) 4881#else 4882 /* Just compare canonical pathnames. */ 4883 char* input_realname = lrealpath (input_filename); 4884 char* temp_realname = lrealpath (temp_filename); 4885 bool files_differ = strcmp (input_realname, temp_realname); 4886 free (input_realname); 4887 free (temp_realname); 4888 if (files_differ) 4889#endif 4890 { 4891 temp_filename = save_string (temp_filename, 4892 temp_filename_length + 1); 4893 obstack_grow (&obstack, temp_filename, 4894 temp_filename_length); 4895 arg_going = 1; 4896 delete_this_arg = 0; 4897 break; 4898 } 4899 } 4900 } 4901 4902 /* See if we already have an association of %g/%u/%U and 4903 suffix. */ 4904 for (t = temp_names; t; t = t->next) 4905 if (t->length == suffix_length 4906 && strncmp (t->suffix, suffix, suffix_length) == 0 4907 && t->unique == (c == 'u' || c == 'U' || c == 'j')) 4908 break; 4909 4910 /* Make a new association if needed. %u and %j 4911 require one. */ 4912 if (t == 0 || c == 'u' || c == 'j') 4913 { 4914 if (t == 0) 4915 { 4916 t = xmalloc (sizeof (struct temp_name)); 4917 t->next = temp_names; 4918 temp_names = t; 4919 } 4920 t->length = suffix_length; 4921 if (saved_suffix) 4922 { 4923 t->suffix = saved_suffix; 4924 saved_suffix = NULL; 4925 } 4926 else 4927 t->suffix = save_string (suffix, suffix_length); 4928 t->unique = (c == 'u' || c == 'U' || c == 'j'); 4929 temp_filename = make_temp_file (t->suffix); 4930 temp_filename_length = strlen (temp_filename); 4931 t->filename = temp_filename; 4932 t->filename_length = temp_filename_length; 4933 } 4934 4935 if (saved_suffix) 4936 free (saved_suffix); 4937 4938 obstack_grow (&obstack, t->filename, t->filename_length); 4939 delete_this_arg = 1; 4940 } 4941 arg_going = 1; 4942 break; 4943 4944 case 'i': 4945 if (combine_inputs) 4946 { 4947 for (i = 0; (int) i < n_infiles; i++) 4948 if ((!infiles[i].language) || (infiles[i].language[0] != '*')) 4949 if (infiles[i].incompiler == input_file_compiler) 4950 { 4951 store_arg (infiles[i].name, 0, 0); 4952 infiles[i].compiled = true; 4953 } 4954 } 4955 else 4956 { 4957 obstack_grow (&obstack, input_filename, input_filename_length); 4958 arg_going = 1; 4959 } 4960 break; 4961 4962 case 'I': 4963 { 4964 struct spec_path_info info; 4965 4966 if (multilib_dir) 4967 { 4968 do_spec_1 ("-imultilib", 1, NULL); 4969 /* Make this a separate argument. */ 4970 do_spec_1 (" ", 0, NULL); 4971 do_spec_1 (multilib_dir, 1, NULL); 4972 do_spec_1 (" ", 0, NULL); 4973 } 4974 4975 if (gcc_exec_prefix) 4976 { 4977 do_spec_1 ("-iprefix", 1, NULL); 4978 /* Make this a separate argument. */ 4979 do_spec_1 (" ", 0, NULL); 4980 do_spec_1 (gcc_exec_prefix, 1, NULL); 4981 do_spec_1 (" ", 0, NULL); 4982 } 4983 4984 if (target_system_root_changed || 4985 (target_system_root && target_sysroot_hdrs_suffix)) 4986 { 4987 do_spec_1 ("-isysroot", 1, NULL); 4988 /* Make this a separate argument. */ 4989 do_spec_1 (" ", 0, NULL); 4990 do_spec_1 (target_system_root, 1, NULL); 4991 if (target_sysroot_hdrs_suffix) 4992 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL); 4993 do_spec_1 (" ", 0, NULL); 4994 } 4995 4996 info.option = "-isystem"; 4997 info.append = "include"; 4998 info.append_len = strlen (info.append); 4999 info.omit_relative = false; 5000 info.separate_options = true; 5001 5002 for_each_path (&include_prefixes, false, info.append_len, 5003 spec_path, &info); 5004 } 5005 break; 5006 5007 case 'o': 5008 { 5009 int max = n_infiles; 5010 max += lang_specific_extra_outfiles; 5011 5012 for (i = 0; i < max; i++) 5013 if (outfiles[i]) 5014 store_arg (outfiles[i], 0, 0); 5015 break; 5016 } 5017 5018 case 'O': 5019 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); 5020 arg_going = 1; 5021 break; 5022 5023 case 's': 5024 this_is_library_file = 1; 5025 break; 5026 5027 case 'V': 5028 outfiles[input_file_number] = NULL; 5029 break; 5030 5031 case 'w': 5032 this_is_output_file = 1; 5033 break; 5034 5035 case 'W': 5036 { 5037 int cur_index = argbuf_index; 5038 /* Handle the {...} following the %W. */ 5039 if (*p != '{') 5040 fatal ("spec '%s' has invalid '%%W%c", spec, *p); 5041 p = handle_braces (p + 1); 5042 if (p == 0) 5043 return -1; 5044 /* End any pending argument. */ 5045 if (arg_going) 5046 { 5047 obstack_1grow (&obstack, 0); 5048 string = XOBFINISH (&obstack, const char *); 5049 if (this_is_library_file) 5050 string = find_file (string); 5051 store_arg (string, delete_this_arg, this_is_output_file); 5052 if (this_is_output_file) 5053 outfiles[input_file_number] = string; 5054 arg_going = 0; 5055 } 5056 /* If any args were output, mark the last one for deletion 5057 on failure. */ 5058 if (argbuf_index != cur_index) 5059 record_temp_file (argbuf[argbuf_index - 1], 0, 1); 5060 break; 5061 } 5062 5063 /* %x{OPTION} records OPTION for %X to output. */ 5064 case 'x': 5065 { 5066 const char *p1 = p; 5067 char *string; 5068 5069 /* Skip past the option value and make a copy. */ 5070 if (*p != '{') 5071 fatal ("spec '%s' has invalid '%%x%c'", spec, *p); 5072 while (*p++ != '}') 5073 ; 5074 string = save_string (p1 + 1, p - p1 - 2); 5075 5076 /* See if we already recorded this option. */ 5077 for (i = 0; i < n_linker_options; i++) 5078 if (! strcmp (string, linker_options[i])) 5079 { 5080 free (string); 5081 return 0; 5082 } 5083 5084 /* This option is new; add it. */ 5085 add_linker_option (string, strlen (string)); 5086 } 5087 break; 5088 5089 /* Dump out the options accumulated previously using %x. */ 5090 case 'X': 5091 for (i = 0; i < n_linker_options; i++) 5092 { 5093 do_spec_1 (linker_options[i], 1, NULL); 5094 /* Make each accumulated option a separate argument. */ 5095 do_spec_1 (" ", 0, NULL); 5096 } 5097 break; 5098 5099 /* Dump out the options accumulated previously using -Wa,. */ 5100 case 'Y': 5101 for (i = 0; i < n_assembler_options; i++) 5102 { 5103 do_spec_1 (assembler_options[i], 1, NULL); 5104 /* Make each accumulated option a separate argument. */ 5105 do_spec_1 (" ", 0, NULL); 5106 } 5107 break; 5108 5109 /* Dump out the options accumulated previously using -Wp,. */ 5110 case 'Z': 5111 for (i = 0; i < n_preprocessor_options; i++) 5112 { 5113 do_spec_1 (preprocessor_options[i], 1, NULL); 5114 /* Make each accumulated option a separate argument. */ 5115 do_spec_1 (" ", 0, NULL); 5116 } 5117 break; 5118 5119 /* Here are digits and numbers that just process 5120 a certain constant string as a spec. */ 5121 5122 case '1': 5123 value = do_spec_1 (cc1_spec, 0, NULL); 5124 if (value != 0) 5125 return value; 5126 break; 5127 5128 case '2': 5129 value = do_spec_1 (cc1plus_spec, 0, NULL); 5130 if (value != 0) 5131 return value; 5132 break; 5133 5134 case 'a': 5135 value = do_spec_1 (asm_spec, 0, NULL); 5136 if (value != 0) 5137 return value; 5138 break; 5139 5140 case 'A': 5141 value = do_spec_1 (asm_final_spec, 0, NULL); 5142 if (value != 0) 5143 return value; 5144 break; 5145 5146 case 'C': 5147 { 5148 const char *const spec 5149 = (input_file_compiler->cpp_spec 5150 ? input_file_compiler->cpp_spec 5151 : cpp_spec); 5152 value = do_spec_1 (spec, 0, NULL); 5153 if (value != 0) 5154 return value; 5155 } 5156 break; 5157 5158 case 'E': 5159 value = do_spec_1 (endfile_spec, 0, NULL); 5160 if (value != 0) 5161 return value; 5162 break; 5163 5164 case 'l': 5165 value = do_spec_1 (link_spec, 0, NULL); 5166 if (value != 0) 5167 return value; 5168 break; 5169 5170 case 'L': 5171 value = do_spec_1 (lib_spec, 0, NULL); 5172 if (value != 0) 5173 return value; 5174 break; 5175 5176 case 'G': 5177 value = do_spec_1 (libgcc_spec, 0, NULL); 5178 if (value != 0) 5179 return value; 5180 break; 5181 5182 case 'R': 5183 /* We assume there is a directory 5184 separator at the end of this string. */ 5185 if (target_system_root) 5186 { 5187 obstack_grow (&obstack, target_system_root, 5188 strlen (target_system_root)); 5189 if (target_sysroot_suffix) 5190 obstack_grow (&obstack, target_sysroot_suffix, 5191 strlen (target_sysroot_suffix)); 5192 } 5193 break; 5194 5195 case 'S': 5196 value = do_spec_1 (startfile_spec, 0, NULL); 5197 if (value != 0) 5198 return value; 5199 break; 5200 5201 /* Here we define characters other than letters and digits. */ 5202 5203 case '{': 5204 p = handle_braces (p); 5205 if (p == 0) 5206 return -1; 5207 break; 5208 5209 case ':': 5210 p = handle_spec_function (p); 5211 if (p == 0) 5212 return -1; 5213 break; 5214 5215 case '%': 5216 obstack_1grow (&obstack, '%'); 5217 break; 5218 5219 case '.': 5220 { 5221 unsigned len = 0; 5222 5223 while (p[len] && p[len] != ' ' && p[len] != '%') 5224 len++; 5225 suffix_subst = save_string (p - 1, len + 1); 5226 p += len; 5227 } 5228 break; 5229 5230 /* Henceforth ignore the option(s) matching the pattern 5231 after the %<. */ 5232 case '<': 5233 { 5234 unsigned len = 0; 5235 int have_wildcard = 0; 5236 int i; 5237 5238 while (p[len] && p[len] != ' ' && p[len] != '\t') 5239 len++; 5240 5241 if (p[len-1] == '*') 5242 have_wildcard = 1; 5243 5244 for (i = 0; i < n_switches; i++) 5245 if (!strncmp (switches[i].part1, p, len - have_wildcard) 5246 && (have_wildcard || switches[i].part1[len] == '\0')) 5247 { 5248 switches[i].live_cond = SWITCH_IGNORE; 5249 switches[i].validated = 1; 5250 } 5251 5252 p += len; 5253 } 5254 break; 5255 5256 case '*': 5257 if (soft_matched_part) 5258 { 5259 do_spec_1 (soft_matched_part, 1, NULL); 5260 do_spec_1 (" ", 0, NULL); 5261 } 5262 else 5263 /* Catch the case where a spec string contains something like 5264 '%{foo:%*}'. i.e. there is no * in the pattern on the left 5265 hand side of the :. */ 5266 error ("spec failure: '%%*' has not been initialized by pattern match"); 5267 break; 5268 5269 /* Process a string found as the value of a spec given by name. 5270 This feature allows individual machine descriptions 5271 to add and use their own specs. 5272 %[...] modifies -D options the way %P does; 5273 %(...) uses the spec unmodified. */ 5274 case '[': 5275 error ("warning: use of obsolete %%[ operator in specs"); 5276 case '(': 5277 { 5278 const char *name = p; 5279 struct spec_list *sl; 5280 int len; 5281 5282 /* The string after the S/P is the name of a spec that is to be 5283 processed. */ 5284 while (*p && *p != ')' && *p != ']') 5285 p++; 5286 5287 /* See if it's in the list. */ 5288 for (len = p - name, sl = specs; sl; sl = sl->next) 5289 if (sl->name_len == len && !strncmp (sl->name, name, len)) 5290 { 5291 name = *(sl->ptr_spec); 5292#ifdef DEBUG_SPECS 5293 notice ("Processing spec %c%s%c, which is '%s'\n", 5294 c, sl->name, (c == '(') ? ')' : ']', name); 5295#endif 5296 break; 5297 } 5298 5299 if (sl) 5300 { 5301 if (c == '(') 5302 { 5303 value = do_spec_1 (name, 0, NULL); 5304 if (value != 0) 5305 return value; 5306 } 5307 else 5308 { 5309 char *x = alloca (strlen (name) * 2 + 1); 5310 char *buf = x; 5311 const char *y = name; 5312 int flag = 0; 5313 5314 /* Copy all of NAME into BUF, but put __ after 5315 every -D and at the end of each arg. */ 5316 while (1) 5317 { 5318 if (! strncmp (y, "-D", 2)) 5319 { 5320 *x++ = '-'; 5321 *x++ = 'D'; 5322 *x++ = '_'; 5323 *x++ = '_'; 5324 y += 2; 5325 flag = 1; 5326 continue; 5327 } 5328 else if (flag 5329 && (*y == ' ' || *y == '\t' || *y == '=' 5330 || *y == '}' || *y == 0)) 5331 { 5332 *x++ = '_'; 5333 *x++ = '_'; 5334 flag = 0; 5335 } 5336 if (*y == 0) 5337 break; 5338 else 5339 *x++ = *y++; 5340 } 5341 *x = 0; 5342 5343 value = do_spec_1 (buf, 0, NULL); 5344 if (value != 0) 5345 return value; 5346 } 5347 } 5348 5349 /* Discard the closing paren or bracket. */ 5350 if (*p) 5351 p++; 5352 } 5353 break; 5354 5355 default: 5356 error ("spec failure: unrecognized spec option '%c'", c); 5357 break; 5358 } 5359 break; 5360 5361 case '\\': 5362 /* Backslash: treat next character as ordinary. */ 5363 c = *p++; 5364 5365 /* Fall through. */ 5366 default: 5367 /* Ordinary character: put it into the current argument. */ 5368 obstack_1grow (&obstack, c); 5369 arg_going = 1; 5370 } 5371 5372 /* End of string. If we are processing a spec function, we need to 5373 end any pending argument. */ 5374 if (processing_spec_function && arg_going) 5375 { 5376 obstack_1grow (&obstack, 0); 5377 string = XOBFINISH (&obstack, const char *); 5378 if (this_is_library_file) 5379 string = find_file (string); 5380 store_arg (string, delete_this_arg, this_is_output_file); 5381 if (this_is_output_file) 5382 outfiles[input_file_number] = string; 5383 arg_going = 0; 5384 } 5385 5386 return 0; 5387} 5388 5389/* Look up a spec function. */ 5390 5391static const struct spec_function * 5392lookup_spec_function (const char *name) 5393{ 5394 const struct spec_function *sf; 5395 5396 for (sf = static_spec_functions; sf->name != NULL; sf++) 5397 if (strcmp (sf->name, name) == 0) 5398 return sf; 5399 5400 return NULL; 5401} 5402 5403/* Evaluate a spec function. */ 5404 5405static const char * 5406eval_spec_function (const char *func, const char *args) 5407{ 5408 const struct spec_function *sf; 5409 const char *funcval; 5410 5411 /* Saved spec processing context. */ 5412 int save_argbuf_index; 5413 int save_argbuf_length; 5414 const char **save_argbuf; 5415 5416 int save_arg_going; 5417 int save_delete_this_arg; 5418 int save_this_is_output_file; 5419 int save_this_is_library_file; 5420 int save_input_from_pipe; 5421 const char *save_suffix_subst; 5422 5423 5424 sf = lookup_spec_function (func); 5425 if (sf == NULL) 5426 fatal ("unknown spec function '%s'", func); 5427 5428 /* Push the spec processing context. */ 5429 save_argbuf_index = argbuf_index; 5430 save_argbuf_length = argbuf_length; 5431 save_argbuf = argbuf; 5432 5433 save_arg_going = arg_going; 5434 save_delete_this_arg = delete_this_arg; 5435 save_this_is_output_file = this_is_output_file; 5436 save_this_is_library_file = this_is_library_file; 5437 save_input_from_pipe = input_from_pipe; 5438 save_suffix_subst = suffix_subst; 5439 5440 /* Create a new spec processing context, and build the function 5441 arguments. */ 5442 5443 alloc_args (); 5444 if (do_spec_2 (args) < 0) 5445 fatal ("error in args to spec function '%s'", func); 5446 5447 /* argbuf_index is an index for the next argument to be inserted, and 5448 so contains the count of the args already inserted. */ 5449 5450 funcval = (*sf->func) (argbuf_index, argbuf); 5451 5452 /* Pop the spec processing context. */ 5453 argbuf_index = save_argbuf_index; 5454 argbuf_length = save_argbuf_length; 5455 free (argbuf); 5456 argbuf = save_argbuf; 5457 5458 arg_going = save_arg_going; 5459 delete_this_arg = save_delete_this_arg; 5460 this_is_output_file = save_this_is_output_file; 5461 this_is_library_file = save_this_is_library_file; 5462 input_from_pipe = save_input_from_pipe; 5463 suffix_subst = save_suffix_subst; 5464 5465 return funcval; 5466} 5467 5468/* Handle a spec function call of the form: 5469 5470 %:function(args) 5471 5472 ARGS is processed as a spec in a separate context and split into an 5473 argument vector in the normal fashion. The function returns a string 5474 containing a spec which we then process in the caller's context, or 5475 NULL if no processing is required. */ 5476 5477static const char * 5478handle_spec_function (const char *p) 5479{ 5480 char *func, *args; 5481 const char *endp, *funcval; 5482 int count; 5483 5484 processing_spec_function++; 5485 5486 /* Get the function name. */ 5487 for (endp = p; *endp != '\0'; endp++) 5488 { 5489 if (*endp == '(') /* ) */ 5490 break; 5491 /* Only allow [A-Za-z0-9], -, and _ in function names. */ 5492 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_')) 5493 fatal ("malformed spec function name"); 5494 } 5495 if (*endp != '(') /* ) */ 5496 fatal ("no arguments for spec function"); 5497 func = save_string (p, endp - p); 5498 p = ++endp; 5499 5500 /* Get the arguments. */ 5501 for (count = 0; *endp != '\0'; endp++) 5502 { 5503 /* ( */ 5504 if (*endp == ')') 5505 { 5506 if (count == 0) 5507 break; 5508 count--; 5509 } 5510 else if (*endp == '(') /* ) */ 5511 count++; 5512 } 5513 /* ( */ 5514 if (*endp != ')') 5515 fatal ("malformed spec function arguments"); 5516 args = save_string (p, endp - p); 5517 p = ++endp; 5518 5519 /* p now points to just past the end of the spec function expression. */ 5520 5521 funcval = eval_spec_function (func, args); 5522 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0) 5523 p = NULL; 5524 5525 free (func); 5526 free (args); 5527 5528 processing_spec_function--; 5529 5530 return p; 5531} 5532 5533/* Inline subroutine of handle_braces. Returns true if the current 5534 input suffix matches the atom bracketed by ATOM and END_ATOM. */ 5535static inline bool 5536input_suffix_matches (const char *atom, const char *end_atom) 5537{ 5538 /* We special case the semantics of {.s:...} and {.S:...} and their 5539 negative variants. Instead of testing the input filename suffix, 5540 we test whether the input source file is an assembler file or an 5541 assembler-with-cpp file respectively. This allows us to correctly 5542 handle the -x command line option. */ 5543 5544 if (atom + 1 == end_atom 5545 && input_file_compiler 5546 && input_file_compiler->suffix) 5547 { 5548 if (*atom == 's') 5549 return !strcmp (input_file_compiler->suffix, "@assembler"); 5550 if (*atom == 'S') 5551 return !strcmp (input_file_compiler->suffix, "@assembler-with-cpp"); 5552 } 5553 5554 return (input_suffix 5555 && !strncmp (input_suffix, atom, end_atom - atom) 5556 && input_suffix[end_atom - atom] == '\0'); 5557} 5558 5559/* Subroutine of handle_braces. Returns true if a switch 5560 matching the atom bracketed by ATOM and END_ATOM appeared on the 5561 command line. */ 5562static bool 5563switch_matches (const char *atom, const char *end_atom, int starred) 5564{ 5565 int i; 5566 int len = end_atom - atom; 5567 int plen = starred ? len : -1; 5568 5569 for (i = 0; i < n_switches; i++) 5570 if (!strncmp (switches[i].part1, atom, len) 5571 && (starred || switches[i].part1[len] == '\0') 5572 && check_live_switch (i, plen)) 5573 return true; 5574 5575 return false; 5576} 5577 5578/* Inline subroutine of handle_braces. Mark all of the switches which 5579 match ATOM (extends to END_ATOM; STARRED indicates whether there 5580 was a star after the atom) for later processing. */ 5581static inline void 5582mark_matching_switches (const char *atom, const char *end_atom, int starred) 5583{ 5584 int i; 5585 int len = end_atom - atom; 5586 int plen = starred ? len : -1; 5587 5588 for (i = 0; i < n_switches; i++) 5589 if (!strncmp (switches[i].part1, atom, len) 5590 && (starred || switches[i].part1[len] == '\0') 5591 && check_live_switch (i, plen)) 5592 switches[i].ordering = 1; 5593} 5594 5595/* Inline subroutine of handle_braces. Process all the currently 5596 marked switches through give_switch, and clear the marks. */ 5597static inline void 5598process_marked_switches (void) 5599{ 5600 int i; 5601 5602 for (i = 0; i < n_switches; i++) 5603 if (switches[i].ordering == 1) 5604 { 5605 switches[i].ordering = 0; 5606 give_switch (i, 0); 5607 } 5608} 5609 5610/* Handle a %{ ... } construct. P points just inside the leading {. 5611 Returns a pointer one past the end of the brace block, or 0 5612 if we call do_spec_1 and that returns -1. */ 5613 5614static const char * 5615handle_braces (const char *p) 5616{ 5617 const char *atom, *end_atom; 5618 const char *d_atom = NULL, *d_end_atom = NULL; 5619 const char *orig = p; 5620 5621 bool a_is_suffix; 5622 bool a_is_starred; 5623 bool a_is_negated; 5624 bool a_matched; 5625 5626 bool a_must_be_last = false; 5627 bool ordered_set = false; 5628 bool disjunct_set = false; 5629 bool disj_matched = false; 5630 bool disj_starred = true; 5631 bool n_way_choice = false; 5632 bool n_way_matched = false; 5633 5634#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) 5635 5636 do 5637 { 5638 if (a_must_be_last) 5639 goto invalid; 5640 5641 /* Scan one "atom" (S in the description above of %{}, possibly 5642 with !, ., or * modifiers). */ 5643 a_matched = a_is_suffix = a_is_starred = a_is_negated = false; 5644 5645 SKIP_WHITE(); 5646 if (*p == '!') 5647 p++, a_is_negated = true; 5648 5649 SKIP_WHITE(); 5650 if (*p == '.') 5651 p++, a_is_suffix = true; 5652 5653 atom = p; 5654 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '=' 5655 || *p == ',' || *p == '.' || *p == '@') 5656 p++; 5657 end_atom = p; 5658 5659 if (*p == '*') 5660 p++, a_is_starred = 1; 5661 5662 SKIP_WHITE(); 5663 switch (*p) 5664 { 5665 case '&': case '}': 5666 /* Substitute the switch(es) indicated by the current atom. */ 5667 ordered_set = true; 5668 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix 5669 || atom == end_atom) 5670 goto invalid; 5671 5672 mark_matching_switches (atom, end_atom, a_is_starred); 5673 5674 if (*p == '}') 5675 process_marked_switches (); 5676 break; 5677 5678 case '|': case ':': 5679 /* Substitute some text if the current atom appears as a switch 5680 or suffix. */ 5681 disjunct_set = true; 5682 if (ordered_set) 5683 goto invalid; 5684 5685 if (atom == end_atom) 5686 { 5687 if (!n_way_choice || disj_matched || *p == '|' 5688 || a_is_negated || a_is_suffix || a_is_starred) 5689 goto invalid; 5690 5691 /* An empty term may appear as the last choice of an 5692 N-way choice set; it means "otherwise". */ 5693 a_must_be_last = true; 5694 disj_matched = !n_way_matched; 5695 disj_starred = false; 5696 } 5697 else 5698 { 5699 if (a_is_suffix && a_is_starred) 5700 goto invalid; 5701 5702 if (!a_is_starred) 5703 disj_starred = false; 5704 5705 /* Don't bother testing this atom if we already have a 5706 match. */ 5707 if (!disj_matched && !n_way_matched) 5708 { 5709 if (a_is_suffix) 5710 a_matched = input_suffix_matches (atom, end_atom); 5711 else 5712 a_matched = switch_matches (atom, end_atom, a_is_starred); 5713 5714 if (a_matched != a_is_negated) 5715 { 5716 disj_matched = true; 5717 d_atom = atom; 5718 d_end_atom = end_atom; 5719 } 5720 } 5721 } 5722 5723 if (*p == ':') 5724 { 5725 /* Found the body, that is, the text to substitute if the 5726 current disjunction matches. */ 5727 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred, 5728 disj_matched && !n_way_matched); 5729 if (p == 0) 5730 return 0; 5731 5732 /* If we have an N-way choice, reset state for the next 5733 disjunction. */ 5734 if (*p == ';') 5735 { 5736 n_way_choice = true; 5737 n_way_matched |= disj_matched; 5738 disj_matched = false; 5739 disj_starred = true; 5740 d_atom = d_end_atom = NULL; 5741 } 5742 } 5743 break; 5744 5745 default: 5746 goto invalid; 5747 } 5748 } 5749 while (*p++ != '}'); 5750 5751 return p; 5752 5753 invalid: 5754 fatal ("braced spec '%s' is invalid at '%c'", orig, *p); 5755 5756#undef SKIP_WHITE 5757} 5758 5759/* Subroutine of handle_braces. Scan and process a brace substitution body 5760 (X in the description of %{} syntax). P points one past the colon; 5761 ATOM and END_ATOM bracket the first atom which was found to be true 5762 (present) in the current disjunction; STARRED indicates whether all 5763 the atoms in the current disjunction were starred (for syntax validation); 5764 MATCHED indicates whether the disjunction matched or not, and therefore 5765 whether or not the body is to be processed through do_spec_1 or just 5766 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1 5767 returns -1. */ 5768 5769static const char * 5770process_brace_body (const char *p, const char *atom, const char *end_atom, 5771 int starred, int matched) 5772{ 5773 const char *body, *end_body; 5774 unsigned int nesting_level; 5775 bool have_subst = false; 5776 5777 /* Locate the closing } or ;, honoring nested braces. 5778 Trim trailing whitespace. */ 5779 body = p; 5780 nesting_level = 1; 5781 for (;;) 5782 { 5783 if (*p == '{') 5784 nesting_level++; 5785 else if (*p == '}') 5786 { 5787 if (!--nesting_level) 5788 break; 5789 } 5790 else if (*p == ';' && nesting_level == 1) 5791 break; 5792 else if (*p == '%' && p[1] == '*' && nesting_level == 1) 5793 have_subst = true; 5794 else if (*p == '\0') 5795 goto invalid; 5796 p++; 5797 } 5798 5799 end_body = p; 5800 while (end_body[-1] == ' ' || end_body[-1] == '\t') 5801 end_body--; 5802 5803 if (have_subst && !starred) 5804 goto invalid; 5805 5806 if (matched) 5807 { 5808 /* Copy the substitution body to permanent storage and execute it. 5809 If have_subst is false, this is a simple matter of running the 5810 body through do_spec_1... */ 5811 char *string = save_string (body, end_body - body); 5812 if (!have_subst) 5813 { 5814 if (do_spec_1 (string, 0, NULL) < 0) 5815 return 0; 5816 } 5817 else 5818 { 5819 /* ... but if have_subst is true, we have to process the 5820 body once for each matching switch, with %* set to the 5821 variant part of the switch. */ 5822 unsigned int hard_match_len = end_atom - atom; 5823 int i; 5824 5825 for (i = 0; i < n_switches; i++) 5826 if (!strncmp (switches[i].part1, atom, hard_match_len) 5827 && check_live_switch (i, hard_match_len)) 5828 { 5829 if (do_spec_1 (string, 0, 5830 &switches[i].part1[hard_match_len]) < 0) 5831 return 0; 5832 /* Pass any arguments this switch has. */ 5833 give_switch (i, 1); 5834 suffix_subst = NULL; 5835 } 5836 } 5837 } 5838 5839 return p; 5840 5841 invalid: 5842 fatal ("braced spec body '%s' is invalid", body); 5843} 5844 5845/* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch 5846 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*} 5847 spec, or -1 if either exact match or %* is used. 5848 5849 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch 5850 whose value does not begin with "no-" is obsoleted by the same value 5851 with the "no-", similarly for a switch with the "no-" prefix. */ 5852 5853static int 5854check_live_switch (int switchnum, int prefix_length) 5855{ 5856 const char *name = switches[switchnum].part1; 5857 int i; 5858 5859 /* In the common case of {<at-most-one-letter>*}, a negating 5860 switch would always match, so ignore that case. We will just 5861 send the conflicting switches to the compiler phase. */ 5862 if (prefix_length >= 0 && prefix_length <= 1) 5863 return 1; 5864 5865 /* If we already processed this switch and determined if it was 5866 live or not, return our past determination. */ 5867 if (switches[switchnum].live_cond != 0) 5868 return switches[switchnum].live_cond > 0; 5869 5870 /* Now search for duplicate in a manner that depends on the name. */ 5871 switch (*name) 5872 { 5873 case 'O': 5874 for (i = switchnum + 1; i < n_switches; i++) 5875 if (switches[i].part1[0] == 'O') 5876 { 5877 switches[switchnum].validated = 1; 5878 switches[switchnum].live_cond = SWITCH_FALSE; 5879 return 0; 5880 } 5881 break; 5882 5883 case 'W': case 'f': case 'm': 5884 if (! strncmp (name + 1, "no-", 3)) 5885 { 5886 /* We have Xno-YYY, search for XYYY. */ 5887 for (i = switchnum + 1; i < n_switches; i++) 5888 if (switches[i].part1[0] == name[0] 5889 && ! strcmp (&switches[i].part1[1], &name[4])) 5890 { 5891 switches[switchnum].validated = 1; 5892 switches[switchnum].live_cond = SWITCH_FALSE; 5893 return 0; 5894 } 5895 } 5896 else 5897 { 5898 /* We have XYYY, search for Xno-YYY. */ 5899 for (i = switchnum + 1; i < n_switches; i++) 5900 if (switches[i].part1[0] == name[0] 5901 && switches[i].part1[1] == 'n' 5902 && switches[i].part1[2] == 'o' 5903 && switches[i].part1[3] == '-' 5904 && !strcmp (&switches[i].part1[4], &name[1])) 5905 { 5906 switches[switchnum].validated = 1; 5907 switches[switchnum].live_cond = SWITCH_FALSE; 5908 return 0; 5909 } 5910 } 5911 break; 5912 } 5913 5914 /* Otherwise the switch is live. */ 5915 switches[switchnum].live_cond = SWITCH_LIVE; 5916 return 1; 5917} 5918 5919/* Pass a switch to the current accumulating command 5920 in the same form that we received it. 5921 SWITCHNUM identifies the switch; it is an index into 5922 the vector of switches gcc received, which is `switches'. 5923 This cannot fail since it never finishes a command line. 5924 5925 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */ 5926 5927static void 5928give_switch (int switchnum, int omit_first_word) 5929{ 5930 if (switches[switchnum].live_cond == SWITCH_IGNORE) 5931 return; 5932 5933 if (!omit_first_word) 5934 { 5935 do_spec_1 ("-", 0, NULL); 5936 do_spec_1 (switches[switchnum].part1, 1, NULL); 5937 } 5938 5939 if (switches[switchnum].args != 0) 5940 { 5941 const char **p; 5942 for (p = switches[switchnum].args; *p; p++) 5943 { 5944 const char *arg = *p; 5945 5946 do_spec_1 (" ", 0, NULL); 5947 if (suffix_subst) 5948 { 5949 unsigned length = strlen (arg); 5950 int dot = 0; 5951 5952 while (length-- && !IS_DIR_SEPARATOR (arg[length])) 5953 if (arg[length] == '.') 5954 { 5955 ((char *)arg)[length] = 0; 5956 dot = 1; 5957 break; 5958 } 5959 do_spec_1 (arg, 1, NULL); 5960 if (dot) 5961 ((char *)arg)[length] = '.'; 5962 do_spec_1 (suffix_subst, 1, NULL); 5963 } 5964 else 5965 do_spec_1 (arg, 1, NULL); 5966 } 5967 } 5968 5969 do_spec_1 (" ", 0, NULL); 5970 switches[switchnum].validated = 1; 5971} 5972 5973/* Search for a file named NAME trying various prefixes including the 5974 user's -B prefix and some standard ones. 5975 Return the absolute file name found. If nothing is found, return NAME. */ 5976 5977static const char * 5978find_file (const char *name) 5979{ 5980 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true); 5981 return newname ? newname : name; 5982} 5983 5984/* Determine whether a directory exists. If LINKER, return 0 for 5985 certain fixed names not needed by the linker. */ 5986 5987static int 5988is_directory (const char *path1, bool linker) 5989{ 5990 int len1; 5991 char *path; 5992 char *cp; 5993 struct stat st; 5994 5995 /* Ensure the string ends with "/.". The resulting path will be a 5996 directory even if the given path is a symbolic link. */ 5997 len1 = strlen (path1); 5998 path = alloca (3 + len1); 5999 memcpy (path, path1, len1); 6000 cp = path + len1; 6001 if (!IS_DIR_SEPARATOR (cp[-1])) 6002 *cp++ = DIR_SEPARATOR; 6003 *cp++ = '.'; 6004 *cp = '\0'; 6005 6006 /* Exclude directories that the linker is known to search. */ 6007 if (linker 6008 && IS_DIR_SEPARATOR (path[0]) 6009 && ((cp - path == 6 6010 && strncmp (path + 1, "lib", 3) == 0) 6011 || (cp - path == 10 6012 && strncmp (path + 1, "usr", 3) == 0 6013 && IS_DIR_SEPARATOR (path[4]) 6014 && strncmp (path + 5, "lib", 3) == 0))) 6015 return 0; 6016 6017 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode)); 6018} 6019 6020/* Set up the various global variables to indicate that we're processing 6021 the input file named FILENAME. */ 6022 6023void 6024set_input (const char *filename) 6025{ 6026 const char *p; 6027 6028 input_filename = filename; 6029 input_filename_length = strlen (input_filename); 6030 6031 input_basename = input_filename; 6032#ifdef HAVE_DOS_BASED_FILE_SYSTEM 6033 /* Skip drive name so 'x:foo' is handled properly. */ 6034 if (input_basename[1] == ':') 6035 input_basename += 2; 6036#endif 6037 for (p = input_basename; *p; p++) 6038 if (IS_DIR_SEPARATOR (*p)) 6039 input_basename = p + 1; 6040 6041 /* Find a suffix starting with the last period, 6042 and set basename_length to exclude that suffix. */ 6043 basename_length = strlen (input_basename); 6044 suffixed_basename_length = basename_length; 6045 p = input_basename + basename_length; 6046 while (p != input_basename && *p != '.') 6047 --p; 6048 if (*p == '.' && p != input_basename) 6049 { 6050 basename_length = p - input_basename; 6051 input_suffix = p + 1; 6052 } 6053 else 6054 input_suffix = ""; 6055 6056 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then 6057 we will need to do a stat on the input_filename. The 6058 INPUT_STAT_SET signals that the stat is needed. */ 6059 input_stat_set = 0; 6060} 6061 6062/* On fatal signals, delete all the temporary files. */ 6063 6064static void 6065fatal_error (int signum) 6066{ 6067 signal (signum, SIG_DFL); 6068 delete_failure_queue (); 6069 delete_temp_files (); 6070 /* Get the same signal again, this time not handled, 6071 so its normal effect occurs. */ 6072 kill (getpid (), signum); 6073} 6074 6075extern int main (int, char **); 6076 6077int 6078main (int argc, char **argv) 6079{ 6080 size_t i; 6081 int value; 6082 int linker_was_run = 0; 6083 int lang_n_infiles = 0; 6084 int num_linker_inputs = 0; 6085 char *explicit_link_files; 6086 char *specs_file; 6087 const char *p; 6088 struct user_specs *uptr; 6089 6090 p = argv[0] + strlen (argv[0]); 6091 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) 6092 --p; 6093 programname = p; 6094 6095 xmalloc_set_program_name (programname); 6096 6097 if (pledge ("stdio rpath wpath cpath proc exec", NULL) == -1) { 6098 error ("pledge: %s", xstrerror (errno)); 6099 exit (1); 6100 } 6101 6102 expandargv (&argc, &argv); 6103 6104 prune_options (&argc, &argv); 6105 6106#ifdef GCC_DRIVER_HOST_INITIALIZATION 6107 /* Perform host dependent initialization when needed. */ 6108 GCC_DRIVER_HOST_INITIALIZATION; 6109#endif 6110 6111 /* Unlock the stdio streams. */ 6112 unlock_std_streams (); 6113 6114 gcc_init_libintl (); 6115 6116 if (signal (SIGINT, SIG_IGN) != SIG_IGN) 6117 signal (SIGINT, fatal_error); 6118#ifdef SIGHUP 6119 if (signal (SIGHUP, SIG_IGN) != SIG_IGN) 6120 signal (SIGHUP, fatal_error); 6121#endif 6122 if (signal (SIGTERM, SIG_IGN) != SIG_IGN) 6123 signal (SIGTERM, fatal_error); 6124#ifdef SIGPIPE 6125 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN) 6126 signal (SIGPIPE, fatal_error); 6127#endif 6128#ifdef SIGCHLD 6129 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will 6130 receive the signal. A different setting is inheritable */ 6131 signal (SIGCHLD, SIG_DFL); 6132#endif 6133 6134 /* Allocate the argument vector. */ 6135 alloc_args (); 6136 6137 obstack_init (&obstack); 6138 6139 /* Build multilib_select, et. al from the separate lines that make up each 6140 multilib selection. */ 6141 { 6142 const char *const *q = multilib_raw; 6143 int need_space; 6144 6145 obstack_init (&multilib_obstack); 6146 while ((p = *q++) != (char *) 0) 6147 obstack_grow (&multilib_obstack, p, strlen (p)); 6148 6149 obstack_1grow (&multilib_obstack, 0); 6150 multilib_select = XOBFINISH (&multilib_obstack, const char *); 6151 6152 q = multilib_matches_raw; 6153 while ((p = *q++) != (char *) 0) 6154 obstack_grow (&multilib_obstack, p, strlen (p)); 6155 6156 obstack_1grow (&multilib_obstack, 0); 6157 multilib_matches = XOBFINISH (&multilib_obstack, const char *); 6158 6159 q = multilib_exclusions_raw; 6160 while ((p = *q++) != (char *) 0) 6161 obstack_grow (&multilib_obstack, p, strlen (p)); 6162 6163 obstack_1grow (&multilib_obstack, 0); 6164 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *); 6165 6166 need_space = FALSE; 6167 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++) 6168 { 6169 if (need_space) 6170 obstack_1grow (&multilib_obstack, ' '); 6171 obstack_grow (&multilib_obstack, 6172 multilib_defaults_raw[i], 6173 strlen (multilib_defaults_raw[i])); 6174 need_space = TRUE; 6175 } 6176 6177 obstack_1grow (&multilib_obstack, 0); 6178 multilib_defaults = XOBFINISH (&multilib_obstack, const char *); 6179 } 6180 6181 /* Set up to remember the pathname of gcc and any options 6182 needed for collect. We use argv[0] instead of programname because 6183 we need the complete pathname. */ 6184 obstack_init (&collect_obstack); 6185 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1); 6186 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1); 6187 putenv (XOBFINISH (&collect_obstack, char *)); 6188 6189#ifdef INIT_ENVIRONMENT 6190 /* Set up any other necessary machine specific environment variables. */ 6191 putenv (INIT_ENVIRONMENT); 6192#endif 6193 6194 /* Make a table of what switches there are (switches, n_switches). 6195 Make a table of specified input files (infiles, n_infiles). 6196 Decode switches that are handled locally. */ 6197 6198 process_command (argc, (const char **) argv); 6199 6200 /* Initialize the vector of specs to just the default. 6201 This means one element containing 0s, as a terminator. */ 6202 6203 compilers = xmalloc (sizeof default_compilers); 6204 memcpy (compilers, default_compilers, sizeof default_compilers); 6205 n_compilers = n_default_compilers; 6206 6207 /* Read specs from a file if there is one. */ 6208 6209 machine_suffix = concat (spec_machine, dir_separator_str, 6210 spec_version, dir_separator_str, NULL); 6211 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL); 6212 6213 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true); 6214 /* Read the specs file unless it is a default one. */ 6215 if (specs_file != 0 && strcmp (specs_file, "specs")) 6216 read_specs (specs_file, TRUE); 6217 else 6218 init_spec (); 6219 6220 /* We need to check standard_exec_prefix/just_machine_suffix/specs 6221 for any override of as, ld and libraries. */ 6222 specs_file = alloca (strlen (standard_exec_prefix) 6223 + strlen (just_machine_suffix) + sizeof ("specs")); 6224 6225 strcpy (specs_file, standard_exec_prefix); 6226 strcat (specs_file, just_machine_suffix); 6227 strcat (specs_file, "specs"); 6228 if (access (specs_file, R_OK) == 0) 6229 read_specs (specs_file, TRUE); 6230 6231 /* Process any configure-time defaults specified for the command line 6232 options, via OPTION_DEFAULT_SPECS. */ 6233 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++) 6234 do_option_spec (option_default_specs[i].name, 6235 option_default_specs[i].spec); 6236 6237 /* Process DRIVER_SELF_SPECS, adding any new options to the end 6238 of the command line. */ 6239 6240 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++) 6241 do_self_spec (driver_self_specs[i]); 6242 6243 /* If not cross-compiling, look for executables in the standard 6244 places. */ 6245 if (*cross_compile == '0') 6246 { 6247 if (*md_exec_prefix) 6248 { 6249 add_prefix (&exec_prefixes, md_exec_prefix, "GCC", 6250 PREFIX_PRIORITY_LAST, 0, 0); 6251 } 6252 } 6253 6254 /* Process sysroot_suffix_spec. */ 6255 if (*sysroot_suffix_spec != 0 6256 && do_spec_2 (sysroot_suffix_spec) == 0) 6257 { 6258 if (argbuf_index > 1) 6259 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC"); 6260 else if (argbuf_index == 1) 6261 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]); 6262 } 6263 6264#ifdef HAVE_LD_SYSROOT 6265 /* Pass the --sysroot option to the linker, if it supports that. If 6266 there is a sysroot_suffix_spec, it has already been processed by 6267 this point, so target_system_root really is the system root we 6268 should be using. */ 6269 if (target_system_root) 6270 { 6271 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) ")); 6272 obstack_grow0 (&obstack, link_spec, strlen (link_spec)); 6273 set_spec ("link", XOBFINISH (&obstack, const char *)); 6274 } 6275#endif 6276 6277 /* Process sysroot_hdrs_suffix_spec. */ 6278 if (*sysroot_hdrs_suffix_spec != 0 6279 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0) 6280 { 6281 if (argbuf_index > 1) 6282 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC"); 6283 else if (argbuf_index == 1) 6284 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]); 6285 } 6286 6287 /* Look for startfiles in the standard places. */ 6288 if (*startfile_prefix_spec != 0 6289 && do_spec_2 (startfile_prefix_spec) == 0 6290 && do_spec_1 (" ", 0, NULL) == 0) 6291 { 6292 int ndx; 6293 for (ndx = 0; ndx < argbuf_index; ndx++) 6294 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS", 6295 PREFIX_PRIORITY_LAST, 0, 1); 6296 } 6297 /* We should eventually get rid of all these and stick to 6298 startfile_prefix_spec exclusively. */ 6299 else if (*cross_compile == '0' || target_system_root) 6300 { 6301 if (*md_startfile_prefix) 6302 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix, 6303 "GCC", PREFIX_PRIORITY_LAST, 0, 1); 6304 6305 if (*md_startfile_prefix_1) 6306 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1, 6307 "GCC", PREFIX_PRIORITY_LAST, 0, 1); 6308 6309 /* If standard_startfile_prefix is relative, base it on 6310 standard_exec_prefix. This lets us move the installed tree 6311 as a unit. If GCC_EXEC_PREFIX is defined, base 6312 standard_startfile_prefix on that as well. 6313 6314 If the prefix is relative, only search it for native compilers; 6315 otherwise we will search a directory containing host libraries. */ 6316 if (IS_ABSOLUTE_PATH (standard_startfile_prefix)) 6317 add_sysrooted_prefix (&startfile_prefixes, 6318 standard_startfile_prefix, "BINUTILS", 6319 PREFIX_PRIORITY_LAST, 0, 1); 6320 else if (*cross_compile == '0') 6321 { 6322 if (gcc_exec_prefix) 6323 add_prefix (&startfile_prefixes, 6324 concat (gcc_exec_prefix, machine_suffix, 6325 standard_startfile_prefix, NULL), 6326 NULL, PREFIX_PRIORITY_LAST, 0, 1); 6327 add_prefix (&startfile_prefixes, 6328 concat (standard_exec_prefix, 6329 machine_suffix, 6330 standard_startfile_prefix, NULL), 6331 NULL, PREFIX_PRIORITY_LAST, 0, 1); 6332 } 6333 6334 if (*standard_startfile_prefix_1) 6335 add_sysrooted_prefix (&startfile_prefixes, 6336 standard_startfile_prefix_1, "BINUTILS", 6337 PREFIX_PRIORITY_LAST, 0, 1); 6338 if (*standard_startfile_prefix_2) 6339 add_sysrooted_prefix (&startfile_prefixes, 6340 standard_startfile_prefix_2, "BINUTILS", 6341 PREFIX_PRIORITY_LAST, 0, 1); 6342 } 6343 6344 /* Process any user specified specs in the order given on the command 6345 line. */ 6346 for (uptr = user_specs_head; uptr; uptr = uptr->next) 6347 { 6348 char *filename = find_a_file (&startfile_prefixes, uptr->filename, 6349 R_OK, true); 6350 read_specs (filename ? filename : uptr->filename, FALSE); 6351 } 6352 6353 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */ 6354 if (gcc_exec_prefix) 6355 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str, 6356 spec_version, dir_separator_str, NULL); 6357 6358 /* Now we have the specs. 6359 Set the `valid' bits for switches that match anything in any spec. */ 6360 6361 validate_all_switches (); 6362 6363 /* Now that we have the switches and the specs, set 6364 the subdirectory based on the options. */ 6365 set_multilib_dir (); 6366 6367 /* Warn about any switches that no pass was interested in. */ 6368 6369 for (i = 0; (int) i < n_switches; i++) 6370 if (! switches[i].validated) 6371 error ("unrecognized option '-%s'", switches[i].part1); 6372 6373 /* Obey some of the options. */ 6374 6375 if (print_search_dirs) 6376 { 6377 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix); 6378 printf (_("programs: %s\n"), 6379 build_search_list (&exec_prefixes, "", false, false)); 6380 printf (_("libraries: %s\n"), 6381 build_search_list (&startfile_prefixes, "", false, true)); 6382 return (0); 6383 } 6384 6385 if (print_file_name) 6386 { 6387 printf ("%s\n", find_file (print_file_name)); 6388 return (0); 6389 } 6390 6391 if (print_prog_name) 6392 { 6393 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0); 6394 printf ("%s\n", (newname ? newname : print_prog_name)); 6395 return (0); 6396 } 6397 6398 if (print_multi_lib) 6399 { 6400 print_multilib_info (); 6401 return (0); 6402 } 6403 6404 if (print_multi_directory) 6405 { 6406 if (multilib_dir == NULL) 6407 printf (".\n"); 6408 else 6409 printf ("%s\n", multilib_dir); 6410 return (0); 6411 } 6412 6413 if (print_multi_os_directory) 6414 { 6415 if (multilib_os_dir == NULL) 6416 printf (".\n"); 6417 else 6418 printf ("%s\n", multilib_os_dir); 6419 return (0); 6420 } 6421 6422 if (target_help_flag) 6423 { 6424 /* Print if any target specific options. */ 6425 6426 /* We do not exit here. Instead we have created a fake input file 6427 called 'target-dummy' which needs to be compiled, and we pass this 6428 on to the various sub-processes, along with the --target-help 6429 switch. */ 6430 } 6431 6432 if (print_help_list) 6433 { 6434 display_help (); 6435 6436 if (! verbose_flag) 6437 { 6438 printf (_("\nFor bug reporting instructions, please see:\n")); 6439 printf ("%s.\n", bug_report_url); 6440 6441 return (0); 6442 } 6443 6444 /* We do not exit here. Instead we have created a fake input file 6445 called 'help-dummy' which needs to be compiled, and we pass this 6446 on the various sub-processes, along with the --help switch. */ 6447 } 6448 6449 if (verbose_flag) 6450 { 6451 int n; 6452 const char *thrmod; 6453 6454 notice ("Target: %s\n", spec_machine); 6455 notice ("Configured with: %s\n", configuration_arguments); 6456 6457#ifdef THREAD_MODEL_SPEC 6458 /* We could have defined THREAD_MODEL_SPEC to "%*" by default, 6459 but there's no point in doing all this processing just to get 6460 thread_model back. */ 6461 obstack_init (&obstack); 6462 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model); 6463 obstack_1grow (&obstack, '\0'); 6464 thrmod = XOBFINISH (&obstack, const char *); 6465#else 6466 thrmod = thread_model; 6467#endif 6468 6469 notice ("Thread model: %s\n", thrmod); 6470 6471 /* compiler_version is truncated at the first space when initialized 6472 from version string, so truncate version_string at the first space 6473 before comparing. */ 6474 for (n = 0; version_string[n]; n++) 6475 if (version_string[n] == ' ') 6476 break; 6477 6478 if (! strncmp (version_string, compiler_version, n) 6479 && compiler_version[n] == 0) 6480 notice ("gcc version %s\n", version_string); 6481 else 6482 notice ("gcc driver version %s executing gcc version %s\n", 6483 version_string, compiler_version); 6484 6485 if (n_infiles == 0) 6486 return (0); 6487 } 6488 6489 if (n_infiles == added_libraries) 6490 fatal ("no input files"); 6491 6492 /* Make a place to record the compiler output file names 6493 that correspond to the input files. */ 6494 6495 i = n_infiles; 6496 i += lang_specific_extra_outfiles; 6497 outfiles = XCNEWVEC (const char *, i); 6498 6499 /* Record which files were specified explicitly as link input. */ 6500 6501 explicit_link_files = XCNEWVEC (char, n_infiles); 6502 6503 if (combine_flag) 6504 combine_inputs = true; 6505 else 6506 combine_inputs = false; 6507 6508 for (i = 0; (int) i < n_infiles; i++) 6509 { 6510 const char *name = infiles[i].name; 6511 struct compiler *compiler = lookup_compiler (name, 6512 strlen (name), 6513 infiles[i].language); 6514 6515 if (compiler && !(compiler->combinable)) 6516 combine_inputs = false; 6517 6518 if (lang_n_infiles > 0 && compiler != input_file_compiler 6519 && infiles[i].language && infiles[i].language[0] != '*') 6520 infiles[i].incompiler = compiler; 6521 else if (compiler) 6522 { 6523 lang_n_infiles++; 6524 input_file_compiler = compiler; 6525 infiles[i].incompiler = compiler; 6526 } 6527 else 6528 { 6529 /* Since there is no compiler for this input file, assume it is a 6530 linker file. */ 6531 explicit_link_files[i] = 1; 6532 infiles[i].incompiler = NULL; 6533 } 6534 infiles[i].compiled = false; 6535 infiles[i].preprocessed = false; 6536 } 6537 6538 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1) 6539 fatal ("cannot specify -o with -c or -S with multiple files"); 6540 6541 if (combine_flag && save_temps_flag) 6542 { 6543 bool save_combine_inputs = combine_inputs; 6544 /* Must do a separate pre-processing pass for C & Objective-C files, to 6545 obtain individual .i files. */ 6546 6547 combine_inputs = false; 6548 for (i = 0; (int) i < n_infiles; i++) 6549 { 6550 int this_file_error = 0; 6551 6552 input_file_number = i; 6553 set_input (infiles[i].name); 6554 if (infiles[i].incompiler 6555 && (infiles[i].incompiler)->needs_preprocessing) 6556 input_file_compiler = infiles[i].incompiler; 6557 else 6558 continue; 6559 6560 if (input_file_compiler) 6561 { 6562 if (input_file_compiler->spec[0] == '#') 6563 { 6564 error ("%s: %s compiler not installed on this system", 6565 input_filename, &input_file_compiler->spec[1]); 6566 this_file_error = 1; 6567 } 6568 else 6569 { 6570 value = do_spec (input_file_compiler->spec); 6571 infiles[i].preprocessed = true; 6572 if (!have_o_argbuf_index) 6573 fatal ("spec '%s' is invalid", input_file_compiler->spec); 6574 infiles[i].name = argbuf[have_o_argbuf_index]; 6575 infiles[i].incompiler 6576 = lookup_compiler (infiles[i].name, 6577 strlen (infiles[i].name), 6578 infiles[i].language); 6579 6580 if (value < 0) 6581 this_file_error = 1; 6582 } 6583 } 6584 6585 if (this_file_error) 6586 { 6587 delete_failure_queue (); 6588 error_count++; 6589 break; 6590 } 6591 clear_failure_queue (); 6592 } 6593 combine_inputs = save_combine_inputs; 6594 } 6595 6596 for (i = 0; (int) i < n_infiles; i++) 6597 { 6598 int this_file_error = 0; 6599 6600 /* Tell do_spec what to substitute for %i. */ 6601 6602 input_file_number = i; 6603 set_input (infiles[i].name); 6604 6605 if (infiles[i].compiled) 6606 continue; 6607 6608 /* Use the same thing in %o, unless cp->spec says otherwise. */ 6609 6610 outfiles[i] = input_filename; 6611 6612 /* Figure out which compiler from the file's suffix. */ 6613 6614 if (! combine_inputs) 6615 input_file_compiler 6616 = lookup_compiler (infiles[i].name, input_filename_length, 6617 infiles[i].language); 6618 else 6619 input_file_compiler = infiles[i].incompiler; 6620 6621 if (input_file_compiler) 6622 { 6623 /* Ok, we found an applicable compiler. Run its spec. */ 6624 6625 if (input_file_compiler->spec[0] == '#') 6626 { 6627 error ("%s: %s compiler not installed on this system", 6628 input_filename, &input_file_compiler->spec[1]); 6629 this_file_error = 1; 6630 } 6631 else 6632 { 6633 value = do_spec (input_file_compiler->spec); 6634 infiles[i].compiled = true; 6635 if (value < 0) 6636 this_file_error = 1; 6637 } 6638 } 6639 6640 /* If this file's name does not contain a recognized suffix, 6641 record it as explicit linker input. */ 6642 6643 else 6644 explicit_link_files[i] = 1; 6645 6646 /* Clear the delete-on-failure queue, deleting the files in it 6647 if this compilation failed. */ 6648 6649 if (this_file_error) 6650 { 6651 delete_failure_queue (); 6652 error_count++; 6653 } 6654 /* If this compilation succeeded, don't delete those files later. */ 6655 clear_failure_queue (); 6656 } 6657 6658 /* Reset the input file name to the first compile/object file name, for use 6659 with %b in LINK_SPEC. We use the first input file that we can find 6660 a compiler to compile it instead of using infiles.language since for 6661 languages other than C we use aliases that we then lookup later. */ 6662 if (n_infiles > 0) 6663 { 6664 int i; 6665 6666 for (i = 0; i < n_infiles ; i++) 6667 if (infiles[i].language && infiles[i].language[0] != '*') 6668 { 6669 set_input (infiles[i].name); 6670 break; 6671 } 6672 } 6673 6674 if (error_count == 0) 6675 { 6676 /* Make sure INPUT_FILE_NUMBER points to first available open 6677 slot. */ 6678 input_file_number = n_infiles; 6679 if (lang_specific_pre_link ()) 6680 error_count++; 6681 } 6682 6683 /* Determine if there are any linker input files. */ 6684 num_linker_inputs = 0; 6685 for (i = 0; (int) i < n_infiles; i++) 6686 if (explicit_link_files[i] || outfiles[i] != NULL) 6687 num_linker_inputs++; 6688 6689 /* Run ld to link all the compiler output files. */ 6690 6691 if (num_linker_inputs > 0 && error_count == 0) 6692 { 6693 int tmp = execution_count; 6694 6695 /* We'll use ld if we can't find collect2. */ 6696 if (! strcmp (linker_name_spec, "collect2")) 6697 { 6698 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false); 6699 if (s == NULL) 6700 linker_name_spec = "ld"; 6701 } 6702 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables 6703 for collect. */ 6704 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false); 6705 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true); 6706 6707 value = do_spec (link_command_spec); 6708 if (value < 0) 6709 error_count = 1; 6710 linker_was_run = (tmp != execution_count); 6711 } 6712 6713 /* If options said don't run linker, 6714 complain about input files to be given to the linker. */ 6715 6716 if (! linker_was_run && error_count == 0) 6717 for (i = 0; (int) i < n_infiles; i++) 6718 if (explicit_link_files[i]) 6719 error ("%s: linker input file unused because linking not done", 6720 outfiles[i]); 6721 6722 /* Delete some or all of the temporary files we made. */ 6723 6724 if (error_count) 6725 delete_failure_queue (); 6726 delete_temp_files (); 6727 6728 if (print_help_list) 6729 { 6730 printf (("\nFor bug reporting instructions, please see:\n")); 6731 printf ("%s\n", bug_report_url); 6732 } 6733 6734 return (signal_count != 0 ? 2 6735 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1) 6736 : 0); 6737} 6738 6739/* Find the proper compilation spec for the file name NAME, 6740 whose length is LENGTH. LANGUAGE is the specified language, 6741 or 0 if this file is to be passed to the linker. */ 6742 6743static struct compiler * 6744lookup_compiler (const char *name, size_t length, const char *language) 6745{ 6746 struct compiler *cp; 6747 6748 /* If this was specified by the user to be a linker input, indicate that. */ 6749 if (language != 0 && language[0] == '*') 6750 return 0; 6751 6752 /* Otherwise, look for the language, if one is spec'd. */ 6753 if (language != 0) 6754 { 6755 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6756 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language)) 6757 return cp; 6758 6759 error ("language %s not recognized", language); 6760 return 0; 6761 } 6762 6763 /* Look for a suffix. */ 6764 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6765 { 6766 if (/* The suffix `-' matches only the file name `-'. */ 6767 (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) 6768 || (strlen (cp->suffix) < length 6769 /* See if the suffix matches the end of NAME. */ 6770 && !strcmp (cp->suffix, 6771 name + length - strlen (cp->suffix)) 6772 )) 6773 break; 6774 } 6775 6776#if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM) 6777 /* Look again, but case-insensitively this time. */ 6778 if (cp < compilers) 6779 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6780 { 6781 if (/* The suffix `-' matches only the file name `-'. */ 6782 (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) 6783 || (strlen (cp->suffix) < length 6784 /* See if the suffix matches the end of NAME. */ 6785 && ((!strcmp (cp->suffix, 6786 name + length - strlen (cp->suffix)) 6787 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ")) 6788 && !strcasecmp (cp->suffix, 6789 name + length - strlen (cp->suffix))) 6790 )) 6791 break; 6792 } 6793#endif 6794 6795 if (cp >= compilers) 6796 { 6797 if (cp->spec[0] != '@') 6798 /* A non-alias entry: return it. */ 6799 return cp; 6800 6801 /* An alias entry maps a suffix to a language. 6802 Search for the language; pass 0 for NAME and LENGTH 6803 to avoid infinite recursion if language not found. */ 6804 return lookup_compiler (NULL, 0, cp->spec + 1); 6805 } 6806 return 0; 6807} 6808 6809static char * 6810save_string (const char *s, int len) 6811{ 6812 char *result = XNEWVEC (char, len + 1); 6813 6814 memcpy (result, s, len); 6815 result[len] = 0; 6816 return result; 6817} 6818 6819void 6820pfatal_with_name (const char *name) 6821{ 6822 perror_with_name (name); 6823 delete_temp_files (); 6824 exit (1); 6825} 6826 6827static void 6828perror_with_name (const char *name) 6829{ 6830 error ("%s: %s", name, xstrerror (errno)); 6831} 6832 6833/* Output an error message and exit. */ 6834 6835void 6836fancy_abort (const char *file, int line, const char *func) 6837{ 6838 fatal_ice ("internal gcc abort in %s, at %s:%d", func, file, line); 6839} 6840 6841/* Output an error message and exit. */ 6842 6843void 6844fatal_ice (const char *cmsgid, ...) 6845{ 6846 va_list ap; 6847 6848 va_start (ap, cmsgid); 6849 6850 fprintf (stderr, "%s: ", programname); 6851 vfprintf (stderr, _(cmsgid), ap); 6852 va_end (ap); 6853 fprintf (stderr, "\n"); 6854 delete_temp_files (); 6855 exit (pass_exit_codes ? ICE_EXIT_CODE : 1); 6856} 6857 6858void 6859fatal (const char *cmsgid, ...) 6860{ 6861 va_list ap; 6862 6863 va_start (ap, cmsgid); 6864 6865 fprintf (stderr, "%s: ", programname); 6866 vfprintf (stderr, _(cmsgid), ap); 6867 va_end (ap); 6868 fprintf (stderr, "\n"); 6869 delete_temp_files (); 6870 exit (1); 6871} 6872 6873/* The argument is actually c-format, not gcc-internal-format, 6874 but because functions with identical names are used through 6875 the rest of the compiler with gcc-internal-format, we just 6876 need to hope all users of these functions use the common 6877 subset between c-format and gcc-internal-format. */ 6878 6879void 6880error (const char *gmsgid, ...) 6881{ 6882 va_list ap; 6883 6884 va_start (ap, gmsgid); 6885 fprintf (stderr, "%s: ", programname); 6886 vfprintf (stderr, _(gmsgid), ap); 6887 va_end (ap); 6888 6889 fprintf (stderr, "\n"); 6890} 6891 6892static void 6893notice (const char *cmsgid, ...) 6894{ 6895 va_list ap; 6896 6897 va_start (ap, cmsgid); 6898 vfprintf (stderr, _(cmsgid), ap); 6899 va_end (ap); 6900} 6901 6902static inline void 6903validate_switches_from_spec (const char *spec) 6904{ 6905 const char *p = spec; 6906 char c; 6907 while ((c = *p++)) 6908 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{'))) 6909 /* We have a switch spec. */ 6910 p = validate_switches (p + 1); 6911} 6912 6913static void 6914validate_all_switches (void) 6915{ 6916 struct compiler *comp; 6917 struct spec_list *spec; 6918 6919 for (comp = compilers; comp->spec; comp++) 6920 validate_switches_from_spec (comp->spec); 6921 6922 /* Look through the linked list of specs read from the specs file. */ 6923 for (spec = specs; spec; spec = spec->next) 6924 validate_switches_from_spec (*spec->ptr_spec); 6925 6926 validate_switches_from_spec (link_command_spec); 6927} 6928 6929/* Look at the switch-name that comes after START 6930 and mark as valid all supplied switches that match it. */ 6931 6932static const char * 6933validate_switches (const char *start) 6934{ 6935 const char *p = start; 6936 const char *atom; 6937 size_t len; 6938 int i; 6939 bool suffix = false; 6940 bool starred = false; 6941 6942#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) 6943 6944next_member: 6945 SKIP_WHITE (); 6946 6947 if (*p == '!') 6948 p++; 6949 6950 SKIP_WHITE (); 6951 if (*p == '.') 6952 suffix = true, p++; 6953 6954 atom = p; 6955 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' 6956 || *p == ',' || *p == '.' || *p == '@') 6957 p++; 6958 len = p - atom; 6959 6960 if (*p == '*') 6961 starred = true, p++; 6962 6963 SKIP_WHITE (); 6964 6965 if (!suffix) 6966 { 6967 /* Mark all matching switches as valid. */ 6968 for (i = 0; i < n_switches; i++) 6969 if (!strncmp (switches[i].part1, atom, len) 6970 && (starred || switches[i].part1[len] == 0)) 6971 switches[i].validated = 1; 6972 } 6973 6974 if (*p) p++; 6975 if (*p && (p[-1] == '|' || p[-1] == '&')) 6976 goto next_member; 6977 6978 if (*p && p[-1] == ':') 6979 { 6980 while (*p && *p != ';' && *p != '}') 6981 { 6982 if (*p == '%') 6983 { 6984 p++; 6985 if (*p == '{' || *p == '<') 6986 p = validate_switches (p+1); 6987 else if (p[0] == 'W' && p[1] == '{') 6988 p = validate_switches (p+2); 6989 } 6990 else 6991 p++; 6992 } 6993 6994 if (*p) p++; 6995 if (*p && p[-1] == ';') 6996 goto next_member; 6997 } 6998 6999 return p; 7000#undef SKIP_WHITE 7001} 7002 7003struct mdswitchstr 7004{ 7005 const char *str; 7006 int len; 7007}; 7008 7009static struct mdswitchstr *mdswitches; 7010static int n_mdswitches; 7011 7012/* Check whether a particular argument was used. The first time we 7013 canonicalize the switches to keep only the ones we care about. */ 7014 7015static int 7016used_arg (const char *p, int len) 7017{ 7018 struct mswitchstr 7019 { 7020 const char *str; 7021 const char *replace; 7022 int len; 7023 int rep_len; 7024 }; 7025 7026 static struct mswitchstr *mswitches; 7027 static int n_mswitches; 7028 int i, j; 7029 7030 if (!mswitches) 7031 { 7032 struct mswitchstr *matches; 7033 const char *q; 7034 int cnt = 0; 7035 7036 /* Break multilib_matches into the component strings of string 7037 and replacement string. */ 7038 for (q = multilib_matches; *q != '\0'; q++) 7039 if (*q == ';') 7040 cnt++; 7041 7042 matches = alloca ((sizeof (struct mswitchstr)) * cnt); 7043 i = 0; 7044 q = multilib_matches; 7045 while (*q != '\0') 7046 { 7047 matches[i].str = q; 7048 while (*q != ' ') 7049 { 7050 if (*q == '\0') 7051 { 7052 invalid_matches: 7053 fatal ("multilib spec '%s' is invalid", multilib_matches); 7054 } 7055 q++; 7056 } 7057 matches[i].len = q - matches[i].str; 7058 7059 matches[i].replace = ++q; 7060 while (*q != ';' && *q != '\0') 7061 { 7062 if (*q == ' ') 7063 goto invalid_matches; 7064 q++; 7065 } 7066 matches[i].rep_len = q - matches[i].replace; 7067 i++; 7068 if (*q == ';') 7069 q++; 7070 } 7071 7072 /* Now build a list of the replacement string for switches that we care 7073 about. Make sure we allocate at least one entry. This prevents 7074 xmalloc from calling fatal, and prevents us from re-executing this 7075 block of code. */ 7076 mswitches 7077 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1)); 7078 for (i = 0; i < n_switches; i++) 7079 if (switches[i].live_cond != SWITCH_IGNORE) 7080 { 7081 int xlen = strlen (switches[i].part1); 7082 for (j = 0; j < cnt; j++) 7083 if (xlen == matches[j].len 7084 && ! strncmp (switches[i].part1, matches[j].str, xlen)) 7085 { 7086 mswitches[n_mswitches].str = matches[j].replace; 7087 mswitches[n_mswitches].len = matches[j].rep_len; 7088 mswitches[n_mswitches].replace = (char *) 0; 7089 mswitches[n_mswitches].rep_len = 0; 7090 n_mswitches++; 7091 break; 7092 } 7093 } 7094 7095 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present 7096 on the command line nor any options mutually incompatible with 7097 them. */ 7098 for (i = 0; i < n_mdswitches; i++) 7099 { 7100 const char *r; 7101 7102 for (q = multilib_options; *q != '\0'; q++) 7103 { 7104 while (*q == ' ') 7105 q++; 7106 7107 r = q; 7108 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0 7109 || strchr (" /", q[mdswitches[i].len]) == NULL) 7110 { 7111 while (*q != ' ' && *q != '/' && *q != '\0') 7112 q++; 7113 if (*q != '/') 7114 break; 7115 q++; 7116 } 7117 7118 if (*q != ' ' && *q != '\0') 7119 { 7120 while (*r != ' ' && *r != '\0') 7121 { 7122 q = r; 7123 while (*q != ' ' && *q != '/' && *q != '\0') 7124 q++; 7125 7126 if (used_arg (r, q - r)) 7127 break; 7128 7129 if (*q != '/') 7130 { 7131 mswitches[n_mswitches].str = mdswitches[i].str; 7132 mswitches[n_mswitches].len = mdswitches[i].len; 7133 mswitches[n_mswitches].replace = (char *) 0; 7134 mswitches[n_mswitches].rep_len = 0; 7135 n_mswitches++; 7136 break; 7137 } 7138 7139 r = q + 1; 7140 } 7141 break; 7142 } 7143 } 7144 } 7145 } 7146 7147 for (i = 0; i < n_mswitches; i++) 7148 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len)) 7149 return 1; 7150 7151 return 0; 7152} 7153 7154static int 7155default_arg (const char *p, int len) 7156{ 7157 int i; 7158 7159 for (i = 0; i < n_mdswitches; i++) 7160 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len)) 7161 return 1; 7162 7163 return 0; 7164} 7165 7166/* Work out the subdirectory to use based on the options. The format of 7167 multilib_select is a list of elements. Each element is a subdirectory 7168 name followed by a list of options followed by a semicolon. The format 7169 of multilib_exclusions is the same, but without the preceding 7170 directory. First gcc will check the exclusions, if none of the options 7171 beginning with an exclamation point are present, and all of the other 7172 options are present, then we will ignore this completely. Passing 7173 that, gcc will consider each multilib_select in turn using the same 7174 rules for matching the options. If a match is found, that subdirectory 7175 will be used. */ 7176 7177static void 7178set_multilib_dir (void) 7179{ 7180 const char *p; 7181 unsigned int this_path_len; 7182 const char *this_path, *this_arg; 7183 const char *start, *end; 7184 int not_arg; 7185 int ok, ndfltok, first; 7186 7187 n_mdswitches = 0; 7188 start = multilib_defaults; 7189 while (*start == ' ' || *start == '\t') 7190 start++; 7191 while (*start != '\0') 7192 { 7193 n_mdswitches++; 7194 while (*start != ' ' && *start != '\t' && *start != '\0') 7195 start++; 7196 while (*start == ' ' || *start == '\t') 7197 start++; 7198 } 7199 7200 if (n_mdswitches) 7201 { 7202 int i = 0; 7203 7204 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches); 7205 for (start = multilib_defaults; *start != '\0'; start = end + 1) 7206 { 7207 while (*start == ' ' || *start == '\t') 7208 start++; 7209 7210 if (*start == '\0') 7211 break; 7212 7213 for (end = start + 1; 7214 *end != ' ' && *end != '\t' && *end != '\0'; end++) 7215 ; 7216 7217 obstack_grow (&multilib_obstack, start, end - start); 7218 obstack_1grow (&multilib_obstack, 0); 7219 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *); 7220 mdswitches[i++].len = end - start; 7221 7222 if (*end == '\0') 7223 break; 7224 } 7225 } 7226 7227 p = multilib_exclusions; 7228 while (*p != '\0') 7229 { 7230 /* Ignore newlines. */ 7231 if (*p == '\n') 7232 { 7233 ++p; 7234 continue; 7235 } 7236 7237 /* Check the arguments. */ 7238 ok = 1; 7239 while (*p != ';') 7240 { 7241 if (*p == '\0') 7242 { 7243 invalid_exclusions: 7244 fatal ("multilib exclusions '%s' is invalid", 7245 multilib_exclusions); 7246 } 7247 7248 if (! ok) 7249 { 7250 ++p; 7251 continue; 7252 } 7253 7254 this_arg = p; 7255 while (*p != ' ' && *p != ';') 7256 { 7257 if (*p == '\0') 7258 goto invalid_exclusions; 7259 ++p; 7260 } 7261 7262 if (*this_arg != '!') 7263 not_arg = 0; 7264 else 7265 { 7266 not_arg = 1; 7267 ++this_arg; 7268 } 7269 7270 ok = used_arg (this_arg, p - this_arg); 7271 if (not_arg) 7272 ok = ! ok; 7273 7274 if (*p == ' ') 7275 ++p; 7276 } 7277 7278 if (ok) 7279 return; 7280 7281 ++p; 7282 } 7283 7284 first = 1; 7285 p = multilib_select; 7286 while (*p != '\0') 7287 { 7288 /* Ignore newlines. */ 7289 if (*p == '\n') 7290 { 7291 ++p; 7292 continue; 7293 } 7294 7295 /* Get the initial path. */ 7296 this_path = p; 7297 while (*p != ' ') 7298 { 7299 if (*p == '\0') 7300 { 7301 invalid_select: 7302 fatal ("multilib select '%s' is invalid", 7303 multilib_select); 7304 } 7305 ++p; 7306 } 7307 this_path_len = p - this_path; 7308 7309 /* Check the arguments. */ 7310 ok = 1; 7311 ndfltok = 1; 7312 ++p; 7313 while (*p != ';') 7314 { 7315 if (*p == '\0') 7316 goto invalid_select; 7317 7318 if (! ok) 7319 { 7320 ++p; 7321 continue; 7322 } 7323 7324 this_arg = p; 7325 while (*p != ' ' && *p != ';') 7326 { 7327 if (*p == '\0') 7328 goto invalid_select; 7329 ++p; 7330 } 7331 7332 if (*this_arg != '!') 7333 not_arg = 0; 7334 else 7335 { 7336 not_arg = 1; 7337 ++this_arg; 7338 } 7339 7340 /* If this is a default argument, we can just ignore it. 7341 This is true even if this_arg begins with '!'. Beginning 7342 with '!' does not mean that this argument is necessarily 7343 inappropriate for this library: it merely means that 7344 there is a more specific library which uses this 7345 argument. If this argument is a default, we need not 7346 consider that more specific library. */ 7347 ok = used_arg (this_arg, p - this_arg); 7348 if (not_arg) 7349 ok = ! ok; 7350 7351 if (! ok) 7352 ndfltok = 0; 7353 7354 if (default_arg (this_arg, p - this_arg)) 7355 ok = 1; 7356 7357 if (*p == ' ') 7358 ++p; 7359 } 7360 7361 if (ok && first) 7362 { 7363 if (this_path_len != 1 7364 || this_path[0] != '.') 7365 { 7366 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1); 7367 char *q; 7368 7369 strncpy (new_multilib_dir, this_path, this_path_len); 7370 new_multilib_dir[this_path_len] = '\0'; 7371 q = strchr (new_multilib_dir, ':'); 7372 if (q != NULL) 7373 *q = '\0'; 7374 multilib_dir = new_multilib_dir; 7375 } 7376 first = 0; 7377 } 7378 7379 if (ndfltok) 7380 { 7381 const char *q = this_path, *end = this_path + this_path_len; 7382 7383 while (q < end && *q != ':') 7384 q++; 7385 if (q < end) 7386 { 7387 char *new_multilib_os_dir = XNEWVEC (char, end - q); 7388 memcpy (new_multilib_os_dir, q + 1, end - q - 1); 7389 new_multilib_os_dir[end - q - 1] = '\0'; 7390 multilib_os_dir = new_multilib_os_dir; 7391 break; 7392 } 7393 } 7394 7395 ++p; 7396 } 7397 7398 if (multilib_dir == NULL && multilib_os_dir != NULL 7399 && strcmp (multilib_os_dir, ".") == 0) 7400 { 7401 free ((char *) multilib_os_dir); 7402 multilib_os_dir = NULL; 7403 } 7404 else if (multilib_dir != NULL && multilib_os_dir == NULL) 7405 multilib_os_dir = multilib_dir; 7406} 7407 7408/* Print out the multiple library subdirectory selection 7409 information. This prints out a series of lines. Each line looks 7410 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is 7411 required. Only the desired options are printed out, the negative 7412 matches. The options are print without a leading dash. There are 7413 no spaces to make it easy to use the information in the shell. 7414 Each subdirectory is printed only once. This assumes the ordering 7415 generated by the genmultilib script. Also, we leave out ones that match 7416 the exclusions. */ 7417 7418static void 7419print_multilib_info (void) 7420{ 7421 const char *p = multilib_select; 7422 const char *last_path = 0, *this_path; 7423 int skip; 7424 unsigned int last_path_len = 0; 7425 7426 while (*p != '\0') 7427 { 7428 skip = 0; 7429 /* Ignore newlines. */ 7430 if (*p == '\n') 7431 { 7432 ++p; 7433 continue; 7434 } 7435 7436 /* Get the initial path. */ 7437 this_path = p; 7438 while (*p != ' ') 7439 { 7440 if (*p == '\0') 7441 { 7442 invalid_select: 7443 fatal ("multilib select '%s' is invalid", multilib_select); 7444 } 7445 7446 ++p; 7447 } 7448 7449 /* When --disable-multilib was used but target defines 7450 MULTILIB_OSDIRNAMES, entries starting with .: are there just 7451 to find multilib_os_dir, so skip them from output. */ 7452 if (this_path[0] == '.' && this_path[1] == ':') 7453 skip = 1; 7454 7455 /* Check for matches with the multilib_exclusions. We don't bother 7456 with the '!' in either list. If any of the exclusion rules match 7457 all of its options with the select rule, we skip it. */ 7458 { 7459 const char *e = multilib_exclusions; 7460 const char *this_arg; 7461 7462 while (*e != '\0') 7463 { 7464 int m = 1; 7465 /* Ignore newlines. */ 7466 if (*e == '\n') 7467 { 7468 ++e; 7469 continue; 7470 } 7471 7472 /* Check the arguments. */ 7473 while (*e != ';') 7474 { 7475 const char *q; 7476 int mp = 0; 7477 7478 if (*e == '\0') 7479 { 7480 invalid_exclusion: 7481 fatal ("multilib exclusion '%s' is invalid", 7482 multilib_exclusions); 7483 } 7484 7485 if (! m) 7486 { 7487 ++e; 7488 continue; 7489 } 7490 7491 this_arg = e; 7492 7493 while (*e != ' ' && *e != ';') 7494 { 7495 if (*e == '\0') 7496 goto invalid_exclusion; 7497 ++e; 7498 } 7499 7500 q = p + 1; 7501 while (*q != ';') 7502 { 7503 const char *arg; 7504 int len = e - this_arg; 7505 7506 if (*q == '\0') 7507 goto invalid_select; 7508 7509 arg = q; 7510 7511 while (*q != ' ' && *q != ';') 7512 { 7513 if (*q == '\0') 7514 goto invalid_select; 7515 ++q; 7516 } 7517 7518 if (! strncmp (arg, this_arg, 7519 (len < q - arg) ? q - arg : len) 7520 || default_arg (this_arg, e - this_arg)) 7521 { 7522 mp = 1; 7523 break; 7524 } 7525 7526 if (*q == ' ') 7527 ++q; 7528 } 7529 7530 if (! mp) 7531 m = 0; 7532 7533 if (*e == ' ') 7534 ++e; 7535 } 7536 7537 if (m) 7538 { 7539 skip = 1; 7540 break; 7541 } 7542 7543 if (*e != '\0') 7544 ++e; 7545 } 7546 } 7547 7548 if (! skip) 7549 { 7550 /* If this is a duplicate, skip it. */ 7551 skip = (last_path != 0 7552 && (unsigned int) (p - this_path) == last_path_len 7553 && ! strncmp (last_path, this_path, last_path_len)); 7554 7555 last_path = this_path; 7556 last_path_len = p - this_path; 7557 } 7558 7559 /* If this directory requires any default arguments, we can skip 7560 it. We will already have printed a directory identical to 7561 this one which does not require that default argument. */ 7562 if (! skip) 7563 { 7564 const char *q; 7565 7566 q = p + 1; 7567 while (*q != ';') 7568 { 7569 const char *arg; 7570 7571 if (*q == '\0') 7572 goto invalid_select; 7573 7574 if (*q == '!') 7575 arg = NULL; 7576 else 7577 arg = q; 7578 7579 while (*q != ' ' && *q != ';') 7580 { 7581 if (*q == '\0') 7582 goto invalid_select; 7583 ++q; 7584 } 7585 7586 if (arg != NULL 7587 && default_arg (arg, q - arg)) 7588 { 7589 skip = 1; 7590 break; 7591 } 7592 7593 if (*q == ' ') 7594 ++q; 7595 } 7596 } 7597 7598 if (! skip) 7599 { 7600 const char *p1; 7601 7602 for (p1 = last_path; p1 < p && *p1 != ':'; p1++) 7603 putchar (*p1); 7604 putchar (';'); 7605 } 7606 7607 ++p; 7608 while (*p != ';') 7609 { 7610 int use_arg; 7611 7612 if (*p == '\0') 7613 goto invalid_select; 7614 7615 if (skip) 7616 { 7617 ++p; 7618 continue; 7619 } 7620 7621 use_arg = *p != '!'; 7622 7623 if (use_arg) 7624 putchar ('@'); 7625 7626 while (*p != ' ' && *p != ';') 7627 { 7628 if (*p == '\0') 7629 goto invalid_select; 7630 if (use_arg) 7631 putchar (*p); 7632 ++p; 7633 } 7634 7635 if (*p == ' ') 7636 ++p; 7637 } 7638 7639 if (! skip) 7640 { 7641 /* If there are extra options, print them now. */ 7642 if (multilib_extra && *multilib_extra) 7643 { 7644 int print_at = TRUE; 7645 const char *q; 7646 7647 for (q = multilib_extra; *q != '\0'; q++) 7648 { 7649 if (*q == ' ') 7650 print_at = TRUE; 7651 else 7652 { 7653 if (print_at) 7654 putchar ('@'); 7655 putchar (*q); 7656 print_at = FALSE; 7657 } 7658 } 7659 } 7660 7661 putchar ('\n'); 7662 } 7663 7664 ++p; 7665 } 7666} 7667 7668/* if-exists built-in spec function. 7669 7670 Checks to see if the file specified by the absolute pathname in 7671 ARGS exists. Returns that pathname if found. 7672 7673 The usual use for this function is to check for a library file 7674 (whose name has been expanded with %s). */ 7675 7676static const char * 7677if_exists_spec_function (int argc, const char **argv) 7678{ 7679 /* Must have only one argument. */ 7680 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) 7681 return argv[0]; 7682 7683 return NULL; 7684} 7685 7686/* if-exists-else built-in spec function. 7687 7688 This is like if-exists, but takes an additional argument which 7689 is returned if the first argument does not exist. */ 7690 7691static const char * 7692if_exists_else_spec_function (int argc, const char **argv) 7693{ 7694 /* Must have exactly two arguments. */ 7695 if (argc != 2) 7696 return NULL; 7697 7698 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) 7699 return argv[0]; 7700 7701 return argv[1]; 7702} 7703 7704/* replace-outfile built-in spec function. 7705 7706 This looks for the first argument in the outfiles array's name and 7707 replaces it with the second argument. */ 7708 7709static const char * 7710replace_outfile_spec_function (int argc, const char **argv) 7711{ 7712 int i; 7713 /* Must have exactly two arguments. */ 7714 if (argc != 2) 7715 abort (); 7716 7717 for (i = 0; i < n_infiles; i++) 7718 { 7719 if (outfiles[i] && !strcmp (outfiles[i], argv[0])) 7720 outfiles[i] = xstrdup (argv[1]); 7721 } 7722 return NULL; 7723} 7724 7725/* Given two version numbers, compares the two numbers. 7726 A version number must match the regular expression 7727 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))* 7728*/ 7729static int 7730compare_version_strings (const char *v1, const char *v2) 7731{ 7732 int rresult; 7733 regex_t r; 7734 7735 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$", 7736 REG_EXTENDED | REG_NOSUB) != 0) 7737 abort (); 7738 rresult = regexec (&r, v1, 0, NULL, 0); 7739 if (rresult == REG_NOMATCH) 7740 fatal ("invalid version number `%s'", v1); 7741 else if (rresult != 0) 7742 abort (); 7743 rresult = regexec (&r, v2, 0, NULL, 0); 7744 if (rresult == REG_NOMATCH) 7745 fatal ("invalid version number `%s'", v2); 7746 else if (rresult != 0) 7747 abort (); 7748 7749 return strverscmp (v1, v2); 7750} 7751 7752 7753/* version_compare built-in spec function. 7754 7755 This takes an argument of the following form: 7756 7757 <comparison-op> <arg1> [<arg2>] <switch> <result> 7758 7759 and produces "result" if the comparison evaluates to true, 7760 and nothing if it doesn't. 7761 7762 The supported <comparison-op> values are: 7763 7764 >= true if switch is a later (or same) version than arg1 7765 !> opposite of >= 7766 < true if switch is an earlier version than arg1 7767 !< opposite of < 7768 >< true if switch is arg1 or later, and earlier than arg2 7769 <> true if switch is earlier than arg1 or is arg2 or later 7770 7771 If the switch is not present, the condition is false unless 7772 the first character of the <comparison-op> is '!'. 7773 7774 For example, 7775 %:version-compare(>= 10.3 mmacosx-version-min= -lmx) 7776 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */ 7777 7778static const char * 7779version_compare_spec_function (int argc, const char **argv) 7780{ 7781 int comp1, comp2; 7782 size_t switch_len; 7783 const char *switch_value = NULL; 7784 int nargs = 1, i; 7785 bool result; 7786 7787 if (argc < 3) 7788 fatal ("too few arguments to %%:version-compare"); 7789 if (argv[0][0] == '\0') 7790 abort (); 7791 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!') 7792 nargs = 2; 7793 if (argc != nargs + 3) 7794 fatal ("too many arguments to %%:version-compare"); 7795 7796 switch_len = strlen (argv[nargs + 1]); 7797 for (i = 0; i < n_switches; i++) 7798 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len) 7799 && check_live_switch (i, switch_len)) 7800 switch_value = switches[i].part1 + switch_len; 7801 7802 if (switch_value == NULL) 7803 comp1 = comp2 = -1; 7804 else 7805 { 7806 comp1 = compare_version_strings (switch_value, argv[1]); 7807 if (nargs == 2) 7808 comp2 = compare_version_strings (switch_value, argv[2]); 7809 else 7810 comp2 = -1; /* This value unused. */ 7811 } 7812 7813 switch (argv[0][0] << 8 | argv[0][1]) 7814 { 7815 case '>' << 8 | '=': 7816 result = comp1 >= 0; 7817 break; 7818 case '!' << 8 | '<': 7819 result = comp1 >= 0 || switch_value == NULL; 7820 break; 7821 case '<' << 8: 7822 result = comp1 < 0; 7823 break; 7824 case '!' << 8 | '>': 7825 result = comp1 < 0 || switch_value == NULL; 7826 break; 7827 case '>' << 8 | '<': 7828 result = comp1 >= 0 && comp2 < 0; 7829 break; 7830 case '<' << 8 | '>': 7831 result = comp1 < 0 || comp2 >= 0; 7832 break; 7833 7834 default: 7835 fatal ("unknown operator '%s' in %%:version-compare", argv[0]); 7836 } 7837 if (! result) 7838 return NULL; 7839 7840 return argv[nargs + 2]; 7841} 7842 7843/* %:include builtin spec function. This differs from %include in that it 7844 can be nested inside a spec, and thus be conditionalized. It takes 7845 one argument, the filename, and looks for it in the startfile path. 7846 The result is always NULL, i.e. an empty expansion. */ 7847 7848static const char * 7849include_spec_function (int argc, const char **argv) 7850{ 7851 char *file; 7852 7853 if (argc != 1) 7854 abort (); 7855 7856 file = find_a_file (&startfile_prefixes, argv[0], R_OK, 0); 7857 read_specs (file ? file : argv[0], FALSE); 7858 7859 return NULL; 7860} 7861