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/* $FreeBSD$ */ 27 28/* This program is the user interface to the C compiler and possibly to 29other compilers. It is used because compilation is a complicated procedure 30which involves running several programs and passing temporary files between 31them, forwarding the users switches to those programs selectively, 32and deleting the temporary files at the end. 33 34CC recognizes how to compile each input file by suffixes in the file names. 35Once it knows which kind of compilation to perform, the procedure for 36compilation is specified by a string called a "spec". */ 37 38/* A Short Introduction to Adding a Command-Line Option. 39 40 Before adding a command-line option, consider if it is really 41 necessary. Each additional command-line option adds complexity and 42 is difficult to remove in subsequent versions. 43 44 In the following, consider adding the command-line argument 45 `--bar'. 46 47 1. Each command-line option is specified in the specs file. The 48 notation is described below in the comment entitled "The Specs 49 Language". Read it. 50 51 2. In this file, add an entry to "option_map" equating the long 52 `--' argument version and any shorter, single letter version. Read 53 the comments in the declaration of "struct option_map" for an 54 explanation. Do not omit the first `-'. 55 56 3. Look in the "specs" file to determine which program or option 57 list should be given the argument, e.g., "cc1_options". Add the 58 appropriate syntax for the shorter option version to the 59 corresponding "const char *" entry in this file. Omit the first 60 `-' from the option. For example, use `-bar', rather than `--bar'. 61 62 4. If the argument takes an argument, e.g., `--baz argument1', 63 modify either DEFAULT_SWITCH_TAKES_ARG or 64 DEFAULT_WORD_SWITCH_TAKES_ARG in gcc.h. Omit the first `-' 65 from `--baz'. 66 67 5. Document the option in this file's display_help(). If the 68 option is passed to a subprogram, modify its corresponding 69 function, e.g., cppinit.c:print_help() or toplev.c:display_help(), 70 instead. 71 72 6. Compile and test. Make sure that your new specs file is being 73 read. For example, use a debugger to investigate the value of 74 "specs_file" in main(). */ 75 76#include "config.h" 77#include "system.h" 78#include "coretypes.h" 79#include "multilib.h" /* before tm.h */ 80#include "tm.h" 81#include <signal.h> 82#if ! defined( SIGCHLD ) && defined( SIGCLD ) 83# define SIGCHLD SIGCLD 84#endif 85#include "xregex.h" 86#include "obstack.h" 87#include "intl.h" 88#include "prefix.h" 89#include "gcc.h" 90#include "flags.h" 91#include "opts.h" 92 93/* By default there is no special suffix for target executables. */ 94/* FIXME: when autoconf is fixed, remove the host check - dj */ 95#if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX) 96#define HAVE_TARGET_EXECUTABLE_SUFFIX 97#endif 98 99/* By default there is no special suffix for host executables. */ 100#ifdef HOST_EXECUTABLE_SUFFIX 101#define HAVE_HOST_EXECUTABLE_SUFFIX 102#else 103#define HOST_EXECUTABLE_SUFFIX "" 104#endif 105 106/* By default, the suffix for target object files is ".o". */ 107#ifdef TARGET_OBJECT_SUFFIX 108#define HAVE_TARGET_OBJECT_SUFFIX 109#else 110#define TARGET_OBJECT_SUFFIX ".o" 111#endif 112 113static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; 114 115/* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */ 116#ifndef LIBRARY_PATH_ENV 117#define LIBRARY_PATH_ENV "LIBRARY_PATH" 118#endif 119 120#ifndef HAVE_KILL 121#define kill(p,s) raise(s) 122#endif 123 124/* If a stage of compilation returns an exit status >= 1, 125 compilation of that file ceases. */ 126 127#define MIN_FATAL_STATUS 1 128 129/* Flag set by cppspec.c to 1. */ 130int is_cpp_driver; 131 132/* Flag saying to pass the greatest exit code returned by a sub-process 133 to the calling program. */ 134static int pass_exit_codes; 135 136/* Definition of string containing the arguments given to configure. */ 137#include "configargs.h" 138 139/* Flag saying to print the directories gcc will search through looking for 140 programs, libraries, etc. */ 141 142static int print_search_dirs; 143 144/* Flag saying to print the full filename of this file 145 as found through our usual search mechanism. */ 146 147static const char *print_file_name = NULL; 148 149/* As print_file_name, but search for executable file. */ 150 151static const char *print_prog_name = NULL; 152 153/* Flag saying to print the relative path we'd use to 154 find libgcc.a given the current compiler flags. */ 155 156static int print_multi_directory; 157 158/* Flag saying to print the relative path we'd use to 159 find OS libraries given the current compiler flags. */ 160 161static int print_multi_os_directory; 162 163/* Flag saying to print the list of subdirectories and 164 compiler flags used to select them in a standard form. */ 165 166static int print_multi_lib; 167 168/* Flag saying to print the command line options understood by gcc and its 169 sub-processes. */ 170 171static int print_help_list; 172 173/* Flag indicating whether we should print the command and arguments */ 174 175static int verbose_flag; 176 177/* Flag indicating whether we should ONLY print the command and 178 arguments (like verbose_flag) without executing the command. 179 Displayed arguments are quoted so that the generated command 180 line is suitable for execution. This is intended for use in 181 shell scripts to capture the driver-generated command line. */ 182static int verbose_only_flag; 183 184/* Flag indicating to print target specific command line options. */ 185 186static int target_help_flag; 187 188/* Flag indicating whether we should report subprocess execution times 189 (if this is supported by the system - see pexecute.c). */ 190 191static int report_times; 192 193/* Nonzero means place this string before uses of /, so that include 194 and library files can be found in an alternate location. */ 195 196#ifdef TARGET_SYSTEM_ROOT 197static const char *target_system_root = TARGET_SYSTEM_ROOT; 198#else 199static const char *target_system_root = 0; 200#endif 201 202/* Nonzero means pass the updated target_system_root to the compiler. */ 203 204static int target_system_root_changed; 205 206/* Nonzero means append this string to target_system_root. */ 207 208static const char *target_sysroot_suffix = 0; 209 210/* Nonzero means append this string to target_system_root for headers. */ 211 212static const char *target_sysroot_hdrs_suffix = 0; 213 214/* Nonzero means write "temp" files in source directory 215 and use the source file's name in them, and don't delete them. */ 216 217static int save_temps_flag; 218 219/* Nonzero means pass multiple source files to the compiler at one time. */ 220 221static int combine_flag = 0; 222 223/* Nonzero means use pipes to communicate between subprocesses. 224 Overridden by either of the above two flags. */ 225 226static int use_pipes; 227 228/* The compiler version. */ 229 230static const char *compiler_version; 231 232/* The target version specified with -V */ 233 234static const char *const spec_version = DEFAULT_TARGET_VERSION; 235 236/* The target machine specified with -b. */ 237 238static const char *spec_machine = DEFAULT_TARGET_MACHINE; 239 240/* Nonzero if cross-compiling. 241 When -b is used, the value comes from the `specs' file. */ 242 243#ifdef CROSS_COMPILE 244static const char *cross_compile = "1"; 245#else 246static const char *cross_compile = "0"; 247#endif 248 249#ifdef MODIFY_TARGET_NAME 250 251/* Information on how to alter the target name based on a command-line 252 switch. The only case we support now is simply appending or deleting a 253 string to or from the end of the first part of the configuration name. */ 254 255static const struct modify_target 256{ 257 const char *const sw; 258 const enum add_del {ADD, DELETE} add_del; 259 const char *const str; 260} 261modify_target[] = MODIFY_TARGET_NAME; 262#endif 263 264/* The number of errors that have occurred; the link phase will not be 265 run if this is nonzero. */ 266static int error_count = 0; 267 268/* Greatest exit code of sub-processes that has been encountered up to 269 now. */ 270static int greatest_status = 1; 271 272/* This is the obstack which we use to allocate many strings. */ 273 274static struct obstack obstack; 275 276/* This is the obstack to build an environment variable to pass to 277 collect2 that describes all of the relevant switches of what to 278 pass the compiler in building the list of pointers to constructors 279 and destructors. */ 280 281static struct obstack collect_obstack; 282 283/* Forward declaration for prototypes. */ 284struct path_prefix; 285struct prefix_list; 286 287static void init_spec (void); 288static void store_arg (const char *, int, int); 289static char *load_specs (const char *); 290static void read_specs (const char *, int); 291static void set_spec (const char *, const char *); 292static struct compiler *lookup_compiler (const char *, size_t, const char *); 293static char *build_search_list (const struct path_prefix *, const char *, 294 bool, bool); 295static void putenv_from_prefixes (const struct path_prefix *, const char *, 296 bool); 297static int access_check (const char *, int); 298static char *find_a_file (const struct path_prefix *, const char *, int, bool); 299static void add_prefix (struct path_prefix *, const char *, const char *, 300 int, int, int); 301static void add_sysrooted_prefix (struct path_prefix *, const char *, 302 const char *, int, int, int); 303static void translate_options (int *, const char *const **); 304static char *skip_whitespace (char *); 305static void delete_if_ordinary (const char *); 306static void delete_temp_files (void); 307static void delete_failure_queue (void); 308static void clear_failure_queue (void); 309static int check_live_switch (int, int); 310static const char *handle_braces (const char *); 311static inline bool input_suffix_matches (const char *, const char *); 312static inline bool switch_matches (const char *, const char *, int); 313static inline void mark_matching_switches (const char *, const char *, int); 314static inline void process_marked_switches (void); 315static const char *process_brace_body (const char *, const char *, const char *, int, int); 316static const struct spec_function *lookup_spec_function (const char *); 317static const char *eval_spec_function (const char *, const char *); 318static const char *handle_spec_function (const char *); 319static char *save_string (const char *, int); 320static void set_collect_gcc_options (void); 321static int do_spec_1 (const char *, int, const char *); 322static int do_spec_2 (const char *); 323static void do_option_spec (const char *, const char *); 324static void do_self_spec (const char *); 325static const char *find_file (const char *); 326static int is_directory (const char *, bool); 327static const char *validate_switches (const char *); 328static void validate_all_switches (void); 329static inline void validate_switches_from_spec (const char *); 330static void give_switch (int, int); 331static int used_arg (const char *, int); 332static int default_arg (const char *, int); 333static void set_multilib_dir (void); 334static void print_multilib_info (void); 335static void perror_with_name (const char *); 336static void fatal_ice (const char *, ...) ATTRIBUTE_PRINTF_1 ATTRIBUTE_NORETURN; 337static void notice (const char *, ...) ATTRIBUTE_PRINTF_1; 338static void display_help (void); 339static void add_preprocessor_option (const char *, int); 340static void add_assembler_option (const char *, int); 341static void add_linker_option (const char *, int); 342static void process_command (int, const char **); 343static int execute (void); 344static void alloc_args (void); 345static void clear_args (void); 346static void fatal_error (int); 347#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) 348static void init_gcc_specs (struct obstack *, const char *, const char *, 349 const char *); 350#endif 351#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 352static const char *convert_filename (const char *, int, int); 353#endif 354 355static const char *if_exists_spec_function (int, const char **); 356static const char *if_exists_else_spec_function (int, const char **); 357static const char *replace_outfile_spec_function (int, const char **); 358static const char *version_compare_spec_function (int, const char **); 359static const char *include_spec_function (int, const char **); 360 361/* The Specs Language 362 363Specs are strings containing lines, each of which (if not blank) 364is made up of a program name, and arguments separated by spaces. 365The program name must be exact and start from root, since no path 366is searched and it is unreliable to depend on the current working directory. 367Redirection of input or output is not supported; the subprograms must 368accept filenames saying what files to read and write. 369 370In addition, the specs can contain %-sequences to substitute variable text 371or for conditional text. Here is a table of all defined %-sequences. 372Note that spaces are not generated automatically around the results of 373expanding these sequences; therefore, you can concatenate them together 374or with constant text in a single argument. 375 376 %% substitute one % into the program name or argument. 377 %i substitute the name of the input file being processed. 378 %b substitute the basename of the input file being processed. 379 This is the substring up to (and not including) the last period 380 and not including the directory. 381 %B same as %b, but include the file suffix (text after the last period). 382 %gSUFFIX 383 substitute a file name that has suffix SUFFIX and is chosen 384 once per compilation, and mark the argument a la %d. To reduce 385 exposure to denial-of-service attacks, the file name is now 386 chosen in a way that is hard to predict even when previously 387 chosen file names are known. For example, `%g.s ... %g.o ... %g.s' 388 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches 389 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it 390 had been pre-processed. Previously, %g was simply substituted 391 with a file name chosen once per compilation, without regard 392 to any appended suffix (which was therefore treated just like 393 ordinary text), making such attacks more likely to succeed. 394 %|SUFFIX 395 like %g, but if -pipe is in effect, expands simply to "-". 396 %mSUFFIX 397 like %g, but if -pipe is in effect, expands to nothing. (We have both 398 %| and %m to accommodate differences between system assemblers; see 399 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.) 400 %uSUFFIX 401 like %g, but generates a new temporary file name even if %uSUFFIX 402 was already seen. 403 %USUFFIX 404 substitutes the last file name generated with %uSUFFIX, generating a 405 new one if there is no such last file name. In the absence of any 406 %uSUFFIX, this is just like %gSUFFIX, except they don't share 407 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s' 408 would involve the generation of two distinct file names, one 409 for each `%g.s' and another for each `%U.s'. Previously, %U was 410 simply substituted with a file name chosen for the previous %u, 411 without regard to any appended suffix. 412 %jSUFFIX 413 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is 414 writable, and if save-temps is off; otherwise, substitute the name 415 of a temporary file, just like %u. This temporary file is not 416 meant for communication between processes, but rather as a junk 417 disposal mechanism. 418 %.SUFFIX 419 substitutes .SUFFIX for the suffixes of a matched switch's args when 420 it is subsequently output with %*. SUFFIX is terminated by the next 421 space or %. 422 %d marks the argument containing or following the %d as a 423 temporary file name, so that that file will be deleted if CC exits 424 successfully. Unlike %g, this contributes no text to the argument. 425 %w marks the argument containing or following the %w as the 426 "output file" of this compilation. This puts the argument 427 into the sequence of arguments that %o will substitute later. 428 %V indicates that this compilation produces no "output file". 429 %W{...} 430 like %{...} but mark last argument supplied within 431 as a file to be deleted on failure. 432 %o substitutes the names of all the output files, with spaces 433 automatically placed around them. You should write spaces 434 around the %o as well or the results are undefined. 435 %o is for use in the specs for running the linker. 436 Input files whose names have no recognized suffix are not compiled 437 at all, but they are included among the output files, so they will 438 be linked. 439 %O substitutes the suffix for object files. Note that this is 440 handled specially when it immediately follows %g, %u, or %U 441 (with or without a suffix argument) because of the need for 442 those to form complete file names. The handling is such that 443 %O is treated exactly as if it had already been substituted, 444 except that %g, %u, and %U do not currently support additional 445 SUFFIX characters following %O as they would following, for 446 example, `.o'. 447 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot 448 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH 449 and -B options) and -imultilib as necessary. 450 %s current argument is the name of a library or startup file of some sort. 451 Search for that file in a standard list of directories 452 and substitute the full name found. 453 %eSTR Print STR as an error message. STR is terminated by a newline. 454 Use this when inconsistent options are detected. 455 %nSTR Print STR as a notice. STR is terminated by a newline. 456 %x{OPTION} Accumulate an option for %X. 457 %X Output the accumulated linker options specified by compilations. 458 %Y Output the accumulated assembler options specified by compilations. 459 %Z Output the accumulated preprocessor options specified by compilations. 460 %a process ASM_SPEC as a spec. 461 This allows config.h to specify part of the spec for running as. 462 %A process ASM_FINAL_SPEC as a spec. A capital A is actually 463 used here. This can be used to run a post-processor after the 464 assembler has done its job. 465 %D Dump out a -L option for each directory in startfile_prefixes. 466 If multilib_dir is set, extra entries are generated with it affixed. 467 %l process LINK_SPEC as a spec. 468 %L process LIB_SPEC as a spec. 469 %G process LIBGCC_SPEC as a spec. 470 %R Output the concatenation of target_system_root and 471 target_sysroot_suffix. 472 %S process STARTFILE_SPEC as a spec. A capital S is actually used here. 473 %E process ENDFILE_SPEC as a spec. A capital E is actually used here. 474 %C process CPP_SPEC as a spec. 475 %1 process CC1_SPEC as a spec. 476 %2 process CC1PLUS_SPEC as a spec. 477 %* substitute the variable part of a matched option. (See below.) 478 Note that each comma in the substituted string is replaced by 479 a single space. 480 %<S remove all occurrences of -S from the command line. 481 Note - this command is position dependent. % commands in the 482 spec string before this one will see -S, % commands in the 483 spec string after this one will not. 484 %<S* remove all occurrences of all switches beginning with -S from the 485 command line. 486 %:function(args) 487 Call the named function FUNCTION, passing it ARGS. ARGS is 488 first processed as a nested spec string, then split into an 489 argument vector in the usual fashion. The function returns 490 a string which is processed as if it had appeared literally 491 as part of the current spec. 492 %{S} substitutes the -S switch, if that switch was given to CC. 493 If that switch was not specified, this substitutes nothing. 494 Here S is a metasyntactic variable. 495 %{S*} substitutes all the switches specified to CC whose names start 496 with -S. This is used for -o, -I, etc; switches that take 497 arguments. CC considers `-o foo' as being one switch whose 498 name starts with `o'. %{o*} would substitute this text, 499 including the space; thus, two arguments would be generated. 500 %{S*&T*} likewise, but preserve order of S and T options (the order 501 of S and T in the spec is not significant). Can be any number 502 of ampersand-separated variables; for each the wild card is 503 optional. Useful for CPP as %{D*&U*&A*}. 504 505 %{S:X} substitutes X, if the -S switch was given to CC. 506 %{!S:X} substitutes X, if the -S switch was NOT given to CC. 507 %{S*:X} substitutes X if one or more switches whose names start 508 with -S was given to CC. Normally X is substituted only 509 once, no matter how many such switches appeared. However, 510 if %* appears somewhere in X, then X will be substituted 511 once for each matching switch, with the %* replaced by the 512 part of that switch that matched the '*'. 513 %{.S:X} substitutes X, if processing a file with suffix S. 514 %{!.S:X} substitutes X, if NOT processing a file with suffix S. 515 516 %{S|T:X} substitutes X if either -S or -T was given to CC. This may be 517 combined with !, ., and * as above binding stronger than the OR. 518 If %* appears in X, all of the alternatives must be starred, and 519 only the first matching alternative is substituted. 520 %{S:X; if S was given to CC, substitutes X; 521 T:Y; else if T was given to CC, substitutes Y; 522 :D} else substitutes D. There can be as many clauses as you need. 523 This may be combined with ., !, |, and * as above. 524 525 %(Spec) processes a specification defined in a specs file as *Spec: 526 %[Spec] as above, but put __ around -D arguments 527 528The conditional text X in a %{S:X} or similar construct may contain 529other nested % constructs or spaces, or even newlines. They are 530processed as usual, as described above. Trailing white space in X is 531ignored. White space may also appear anywhere on the left side of the 532colon in these constructs, except between . or * and the corresponding 533word. 534 535The -O, -f, -m, and -W switches are handled specifically in these 536constructs. If another value of -O or the negated form of a -f, -m, or 537-W switch is found later in the command line, the earlier switch 538value is ignored, except with {S*} where S is just one letter; this 539passes all matching options. 540 541The character | at the beginning of the predicate text is used to indicate 542that a command should be piped to the following command, but only if -pipe 543is specified. 544 545Note that it is built into CC which switches take arguments and which 546do not. You might think it would be useful to generalize this to 547allow each compiler's spec to say which switches take arguments. But 548this cannot be done in a consistent fashion. CC cannot even decide 549which input files have been specified without knowing which switches 550take arguments, and it must know which input files to compile in order 551to tell which compilers to run. 552 553CC also knows implicitly that arguments starting in `-l' are to be 554treated as compiler output files, and passed to the linker in their 555proper position among the other output files. */ 556 557/* Define the macros used for specs %a, %l, %L, %S, %C, %1. */ 558 559/* config.h can define ASM_SPEC to provide extra args to the assembler 560 or extra switch-translations. */ 561#ifndef ASM_SPEC 562#define ASM_SPEC "" 563#endif 564 565/* config.h can define ASM_FINAL_SPEC to run a post processor after 566 the assembler has run. */ 567#ifndef ASM_FINAL_SPEC 568#define ASM_FINAL_SPEC "" 569#endif 570 571/* config.h can define CPP_SPEC to provide extra args to the C preprocessor 572 or extra switch-translations. */ 573#ifndef CPP_SPEC 574#define CPP_SPEC "" 575#endif 576 577/* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus 578 or extra switch-translations. */ 579#ifndef CC1_SPEC 580#define CC1_SPEC "" 581#endif 582 583/* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus 584 or extra switch-translations. */ 585#ifndef CC1PLUS_SPEC 586#define CC1PLUS_SPEC "" 587#endif 588 589/* config.h can define LINK_SPEC to provide extra args to the linker 590 or extra switch-translations. */ 591#ifndef LINK_SPEC 592#define LINK_SPEC "" 593#endif 594 595/* config.h can define LIB_SPEC to override the default libraries. */ 596#ifndef LIB_SPEC 597#define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}" 598#endif 599 600/* mudflap specs */ 601#ifndef MFWRAP_SPEC 602/* XXX: valid only for GNU ld */ 603/* XXX: should exactly match hooks provided by libmudflap.a */ 604#define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \ 605 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\ 606 --wrap=mmap --wrap=munmap --wrap=alloca\ 607} %{fmudflapth: --wrap=pthread_create\ 608}} %{fmudflap|fmudflapth: --wrap=main}" 609#endif 610#ifndef MFLIB_SPEC 611#define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}" 612#endif 613 614/* config.h can define LIBGCC_SPEC to override how and when libgcc.a is 615 included. */ 616#ifndef LIBGCC_SPEC 617#if defined(REAL_LIBGCC_SPEC) 618#define LIBGCC_SPEC REAL_LIBGCC_SPEC 619#elif defined(LINK_LIBGCC_SPECIAL_1) 620/* Have gcc do the search for libgcc.a. */ 621#define LIBGCC_SPEC "libgcc.a%s" 622#else 623#define LIBGCC_SPEC "-lgcc" 624#endif 625#endif 626 627/* config.h can define STARTFILE_SPEC to override the default crt0 files. */ 628#ifndef STARTFILE_SPEC 629#define STARTFILE_SPEC \ 630 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}" 631#endif 632 633/* config.h can define SWITCHES_NEED_SPACES to control which options 634 require spaces between the option and the argument. */ 635#ifndef SWITCHES_NEED_SPACES 636#define SWITCHES_NEED_SPACES "" 637#endif 638 639/* config.h can define ENDFILE_SPEC to override the default crtn files. */ 640#ifndef ENDFILE_SPEC 641#define ENDFILE_SPEC "" 642#endif 643 644#ifndef LINKER_NAME 645#define LINKER_NAME "collect2" 646#endif 647 648/* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g' 649 to the assembler. */ 650#ifndef ASM_DEBUG_SPEC 651# if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \ 652 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) 653# define ASM_DEBUG_SPEC \ 654 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \ 655 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \ 656 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}") 657# else 658# if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) 659# define ASM_DEBUG_SPEC "%{g*:--gstabs}" 660# endif 661# if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) 662# define ASM_DEBUG_SPEC "%{g*:--gdwarf2}" 663# endif 664# endif 665#endif 666#ifndef ASM_DEBUG_SPEC 667# define ASM_DEBUG_SPEC "" 668#endif 669 670/* Here is the spec for running the linker, after compiling all files. */ 671 672/* This is overridable by the target in case they need to specify the 673 -lgcc and -lc order specially, yet not require them to override all 674 of LINK_COMMAND_SPEC. */ 675#ifndef LINK_GCC_C_SEQUENCE_SPEC 676#define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G" 677#endif 678 679#ifndef LINK_SSP_SPEC 680#ifdef TARGET_LIBC_PROVIDES_SSP 681#define LINK_SSP_SPEC "%{fstack-protector:}" 682#else 683#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}" 684#endif 685#endif 686 687#ifndef LINK_PIE_SPEC 688#ifdef HAVE_LD_PIE 689#define LINK_PIE_SPEC "%{pie:-pie} " 690#else 691#define LINK_PIE_SPEC "%{pie:} " 692#endif 693#endif 694 695/* -u* was put back because both BSD and SysV seem to support it. */ 696/* %{static:} simply prevents an error message if the target machine 697 doesn't handle -static. */ 698/* We want %{T*} after %{L*} and %D so that it can be used to specify linker 699 scripts which exist in user specified directories, or in standard 700 directories. */ 701#ifndef LINK_COMMAND_SPEC 702#ifndef FREEBSD_NATIVE 703#define LINK_COMMAND_SPEC "\ 704%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ 705 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\ 706 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\ 707 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\ 708 %{fopenmp:%:include(libgomp.spec)%(link_gomp)} %(mflib)\ 709 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\ 710 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\ 711 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}" 712#else 713#define LINK_COMMAND_SPEC "\ 714%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ 715 %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\ 716 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\ 717 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\ 718 %{fopenmp: -lgomp} %(mflib)\ 719 %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\ 720 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\ 721 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}" 722#endif 723#endif 724 725#ifndef LINK_LIBGCC_SPEC 726/* Generate -L options for startfile prefix list. */ 727# define LINK_LIBGCC_SPEC "%D" 728#endif 729 730#ifndef STARTFILE_PREFIX_SPEC 731# define STARTFILE_PREFIX_SPEC "" 732#endif 733 734#ifndef SYSROOT_SPEC 735# define SYSROOT_SPEC "--sysroot=%R" 736#endif 737 738#ifndef SYSROOT_SUFFIX_SPEC 739# define SYSROOT_SUFFIX_SPEC "" 740#endif 741 742#ifndef SYSROOT_HEADERS_SUFFIX_SPEC 743# define SYSROOT_HEADERS_SUFFIX_SPEC "" 744#endif 745 746static const char *asm_debug; 747static const char *cpp_spec = CPP_SPEC; 748static const char *cc1_spec = CC1_SPEC; 749static const char *cc1plus_spec = CC1PLUS_SPEC; 750static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC; 751static const char *link_ssp_spec = LINK_SSP_SPEC; 752static const char *asm_spec = ASM_SPEC; 753static const char *asm_final_spec = ASM_FINAL_SPEC; 754static const char *link_spec = LINK_SPEC; 755static const char *lib_spec = LIB_SPEC; 756static const char *mfwrap_spec = MFWRAP_SPEC; 757static const char *mflib_spec = MFLIB_SPEC; 758static const char *link_gomp_spec = ""; 759static const char *libgcc_spec = LIBGCC_SPEC; 760static const char *endfile_spec = ENDFILE_SPEC; 761static const char *startfile_spec = STARTFILE_SPEC; 762static const char *switches_need_spaces = SWITCHES_NEED_SPACES; 763static const char *linker_name_spec = LINKER_NAME; 764static const char *link_command_spec = LINK_COMMAND_SPEC; 765static const char *link_libgcc_spec = LINK_LIBGCC_SPEC; 766static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC; 767static const char *sysroot_spec = SYSROOT_SPEC; 768static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC; 769static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC; 770 771/* Standard options to cpp, cc1, and as, to reduce duplication in specs. 772 There should be no need to override these in target dependent files, 773 but we need to copy them to the specs file so that newer versions 774 of the GCC driver can correctly drive older tool chains with the 775 appropriate -B options. */ 776 777/* When cpplib handles traditional preprocessing, get rid of this, and 778 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so 779 that we default the front end language better. */ 780static const char *trad_capable_cpp = 781"cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}"; 782 783/* We don't wrap .d files in %W{} since a missing .d file, and 784 therefore no dependency entry, confuses make into thinking a .o 785 file that happens to exist is up-to-date. */ 786static const char *cpp_unique_options = 787"%{C|CC:%{!E:%eGCC does not support -C or -CC without -E}}\ 788 %{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\ 789 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\ 790 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\ 791 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\ 792 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\ 793 %{remap} %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\ 794 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\ 795 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\ 796 %{E|M|MM:%W{o*}}"; 797 798/* This contains cpp options which are common with cc1_options and are passed 799 only when preprocessing only to avoid duplication. We pass the cc1 spec 800 options to the preprocessor so that it the cc1 spec may manipulate 801 options used to set target flags. Those special target flags settings may 802 in turn cause preprocessor symbols to be defined specially. */ 803static const char *cpp_options = 804"%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\ 805 %{f*} %{g*:%{!g0:%{!fno-working-directory:-fworking-directory}}} %{O*}\ 806 %{undef} %{save-temps:-fpch-preprocess}"; 807 808/* This contains cpp options which are not passed when the preprocessor 809 output will be used by another program. */ 810static const char *cpp_debug_options = "%{d*}"; 811 812/* NB: This is shared amongst all front-ends. */ 813static const char *cc1_options = 814"%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ 815 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\ 816 %{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}%{!c:%{!S:-auxbase %b}}\ 817 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\ 818 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\ 819 %{Qn:-fno-ident} %{--help:--help}\ 820 %{--target-help:--target-help}\ 821 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\ 822 %{fsyntax-only:-o %j} %{-param*}\ 823 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\ 824 %{coverage:-fprofile-arcs -ftest-coverage}"; 825 826static const char *asm_options = 827"%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}"; 828 829static const char *invoke_as = 830#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT 831"%{!S:-o %|.s |\n as %(asm_options) %|.s %A }"; 832#else 833"%{!S:-o %|.s |\n as %(asm_options) %m.s %A }"; 834#endif 835 836/* Some compilers have limits on line lengths, and the multilib_select 837 and/or multilib_matches strings can be very long, so we build them at 838 run time. */ 839static struct obstack multilib_obstack; 840static const char *multilib_select; 841static const char *multilib_matches; 842static const char *multilib_defaults; 843static const char *multilib_exclusions; 844 845/* Check whether a particular argument is a default argument. */ 846 847#ifndef MULTILIB_DEFAULTS 848#define MULTILIB_DEFAULTS { "" } 849#endif 850 851static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS; 852 853#ifndef DRIVER_SELF_SPECS 854#define DRIVER_SELF_SPECS "" 855#endif 856 857/* Adding -fopenmp should imply pthreads. This is particularly important 858 for targets that use different start files and suchlike. */ 859#ifndef GOMP_SELF_SPECS 860#define GOMP_SELF_SPECS "%{fopenmp: -pthread}" 861#endif 862 863static const char *const driver_self_specs[] = { 864 DRIVER_SELF_SPECS, GOMP_SELF_SPECS 865}; 866 867#ifndef OPTION_DEFAULT_SPECS 868#define OPTION_DEFAULT_SPECS { "", "" } 869#endif 870 871struct default_spec 872{ 873 const char *name; 874 const char *spec; 875}; 876 877static const struct default_spec 878 option_default_specs[] = { OPTION_DEFAULT_SPECS }; 879 880struct user_specs 881{ 882 struct user_specs *next; 883 const char *filename; 884}; 885 886static struct user_specs *user_specs_head, *user_specs_tail; 887 888#ifndef SWITCH_TAKES_ARG 889#define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR) 890#endif 891 892#ifndef WORD_SWITCH_TAKES_ARG 893#define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR) 894#endif 895 896#ifdef HAVE_TARGET_EXECUTABLE_SUFFIX 897/* This defines which switches stop a full compilation. */ 898#define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \ 899 ((CHAR) == 'c' || (CHAR) == 'S') 900 901#ifndef SWITCH_CURTAILS_COMPILATION 902#define SWITCH_CURTAILS_COMPILATION(CHAR) \ 903 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) 904#endif 905#endif 906 907/* Record the mapping from file suffixes for compilation specs. */ 908 909struct compiler 910{ 911 const char *suffix; /* Use this compiler for input files 912 whose names end in this suffix. */ 913 914 const char *spec; /* To use this compiler, run this spec. */ 915 916 const char *cpp_spec; /* If non-NULL, substitute this spec 917 for `%C', rather than the usual 918 cpp_spec. */ 919 const int combinable; /* If nonzero, compiler can deal with 920 multiple source files at once (IMA). */ 921 const int needs_preprocessing; /* If nonzero, source files need to 922 be run through a preprocessor. */ 923}; 924 925/* Pointer to a vector of `struct compiler' that gives the spec for 926 compiling a file, based on its suffix. 927 A file that does not end in any of these suffixes will be passed 928 unchanged to the loader and nothing else will be done to it. 929 930 An entry containing two 0s is used to terminate the vector. 931 932 If multiple entries match a file, the last matching one is used. */ 933 934static struct compiler *compilers; 935 936/* Number of entries in `compilers', not counting the null terminator. */ 937 938static int n_compilers; 939 940/* The default list of file name suffixes and their compilation specs. */ 941 942static const struct compiler default_compilers[] = 943{ 944 /* Add lists of suffixes of known languages here. If those languages 945 were not present when we built the driver, we will hit these copies 946 and be given a more meaningful error than "file not used since 947 linking is not done". */ 948 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0}, 949 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0}, 950 {".mii", "#Objective-C++", 0, 0, 0}, 951 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0}, 952 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0}, 953 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0}, 954 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0}, 955 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0}, 956 {".f", "#Fortran", 0, 0, 0}, {".for", "#Fortran", 0, 0, 0}, 957 {".fpp", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0}, 958 {".FOR", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0}, 959 {".f90", "#Fortran", 0, 0, 0}, {".f95", "#Fortran", 0, 0, 0}, 960 {".F90", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0}, 961 {".r", "#Ratfor", 0, 0, 0}, 962 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0}, 963 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0}, 964 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0}, 965 /* Next come the entries for C. */ 966 {".c", "@c", 0, 1, 1}, 967 {"@c", 968 /* cc1 has an integrated ISO C preprocessor. We should invoke the 969 external preprocessor if -save-temps is given. */ 970 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ 971 %{!E:%{!M:%{!MM:\ 972 %{traditional|ftraditional:\ 973%eGNU C no longer supports -traditional without -E}\ 974 %{!combine:\ 975 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ 976 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\ 977 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \ 978 %(cc1_options)}\ 979 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\ 980 cc1 %(cpp_unique_options) %(cc1_options)}}}\ 981 %{!fsyntax-only:%(invoke_as)}} \ 982 %{combine:\ 983 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ 984 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i}}\ 985 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\ 986 cc1 %(cpp_unique_options) %(cc1_options)}}\ 987 %{!fsyntax-only:%(invoke_as)}}}}}}", 0, 1, 1}, 988 {"-", 989 "%{!E:%e-E or -x required when input is from standard input}\ 990 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0}, 991 {".h", "@c-header", 0, 0, 0}, 992 {"@c-header", 993 /* cc1 has an integrated ISO C preprocessor. We should invoke the 994 external preprocessor if -save-temps is given. */ 995 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\ 996 %{!E:%{!M:%{!MM:\ 997 %{save-temps|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \ 998 %(cpp_options) -o %{save-temps:%b.i} %{!save-temps:%g.i} \n\ 999 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} \ 1000 %(cc1_options)\ 1001 -o %g.s %{!o*:--output-pch=%i.gch}\ 1002 %W{o*:--output-pch=%*}%V}\ 1003 %{!save-temps:%{!traditional-cpp:%{!no-integrated-cpp:\ 1004 cc1 %(cpp_unique_options) %(cc1_options)\ 1005 -o %g.s %{!o*:--output-pch=%i.gch}\ 1006 %W{o*:--output-pch=%*}%V}}}}}}", 0, 0, 0}, 1007 {".i", "@cpp-output", 0, 1, 0}, 1008 {"@cpp-output", 1009 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0}, 1010 {".s", "@assembler", 0, 1, 0}, 1011 {"@assembler", 1012 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0}, 1013 {".S", "@assembler-with-cpp", 0, 1, 0}, 1014 {"@assembler-with-cpp", 1015#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT 1016 "%(trad_capable_cpp) -lang-asm %(cpp_options)\ 1017 %{E|M|MM:%(cpp_debug_options)}\ 1018 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ 1019 as %(asm_debug) %(asm_options) %|.s %A }}}}" 1020#else 1021 "%(trad_capable_cpp) -lang-asm %(cpp_options)\ 1022 %{E|M|MM:%(cpp_debug_options)}\ 1023 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\ 1024 as %(asm_debug) %(asm_options) %m.s %A }}}}" 1025#endif 1026 , 0, 1, 0}, 1027 1028#include "specs.h" 1029 /* Mark end of table. */ 1030 {0, 0, 0, 0, 0} 1031}; 1032 1033/* Number of elements in default_compilers, not counting the terminator. */ 1034 1035static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1; 1036 1037/* A vector of options to give to the linker. 1038 These options are accumulated by %x, 1039 and substituted into the linker command with %X. */ 1040static int n_linker_options; 1041static char **linker_options; 1042 1043/* A vector of options to give to the assembler. 1044 These options are accumulated by -Wa, 1045 and substituted into the assembler command with %Y. */ 1046static int n_assembler_options; 1047static char **assembler_options; 1048 1049/* A vector of options to give to the preprocessor. 1050 These options are accumulated by -Wp, 1051 and substituted into the preprocessor command with %Z. */ 1052static int n_preprocessor_options; 1053static char **preprocessor_options; 1054 1055/* Define how to map long options into short ones. */ 1056 1057/* This structure describes one mapping. */ 1058struct option_map 1059{ 1060 /* The long option's name. */ 1061 const char *const name; 1062 /* The equivalent short option. */ 1063 const char *const equivalent; 1064 /* Argument info. A string of flag chars; NULL equals no options. 1065 a => argument required. 1066 o => argument optional. 1067 j => join argument to equivalent, making one word. 1068 * => require other text after NAME as an argument. */ 1069 const char *const arg_info; 1070}; 1071 1072/* This is the table of mappings. Mappings are tried sequentially 1073 for each option encountered; the first one that matches, wins. */ 1074 1075static const struct option_map option_map[] = 1076 { 1077 {"--all-warnings", "-Wall", 0}, 1078 {"--ansi", "-ansi", 0}, 1079 {"--assemble", "-S", 0}, 1080 {"--assert", "-A", "a"}, 1081 {"--classpath", "-fclasspath=", "aj"}, 1082 {"--bootclasspath", "-fbootclasspath=", "aj"}, 1083 {"--CLASSPATH", "-fclasspath=", "aj"}, 1084 {"--combine", "-combine", 0}, 1085 {"--comments", "-C", 0}, 1086 {"--comments-in-macros", "-CC", 0}, 1087 {"--compile", "-c", 0}, 1088 {"--debug", "-g", "oj"}, 1089 {"--define-macro", "-D", "aj"}, 1090 {"--dependencies", "-M", 0}, 1091 {"--dump", "-d", "a"}, 1092 {"--dumpbase", "-dumpbase", "a"}, 1093 {"--encoding", "-fencoding=", "aj"}, 1094 {"--entry", "-e", 0}, 1095 {"--extra-warnings", "-W", 0}, 1096 {"--extdirs", "-fextdirs=", "aj"}, 1097 {"--for-assembler", "-Wa", "a"}, 1098 {"--for-linker", "-Xlinker", "a"}, 1099 {"--force-link", "-u", "a"}, 1100 {"--coverage", "-coverage", 0}, 1101 {"--imacros", "-imacros", "a"}, 1102 {"--include", "-include", "a"}, 1103 {"--include-barrier", "-I-", 0}, 1104 {"--include-directory", "-I", "aj"}, 1105 {"--include-directory-after", "-idirafter", "a"}, 1106 {"--include-prefix", "-iprefix", "a"}, 1107 {"--include-with-prefix", "-iwithprefix", "a"}, 1108 {"--include-with-prefix-before", "-iwithprefixbefore", "a"}, 1109 {"--include-with-prefix-after", "-iwithprefix", "a"}, 1110 {"--language", "-x", "a"}, 1111 {"--library-directory", "-L", "a"}, 1112 {"--machine", "-m", "aj"}, 1113 {"--machine-", "-m", "*j"}, 1114 {"--no-integrated-cpp", "-no-integrated-cpp", 0}, 1115 {"--no-line-commands", "-P", 0}, 1116 {"--no-precompiled-includes", "-noprecomp", 0}, 1117 {"--no-standard-includes", "-nostdinc", 0}, 1118 {"--no-standard-libraries", "-nostdlib", 0}, 1119 {"--no-warnings", "-w", 0}, 1120 {"--optimize", "-O", "oj"}, 1121 {"--output", "-o", "a"}, 1122 {"--output-class-directory", "-foutput-class-dir=", "ja"}, 1123 {"--param", "--param", "a"}, 1124 {"--pass-exit-codes", "-pass-exit-codes", 0}, 1125 {"--pedantic", "-pedantic", 0}, 1126 {"--pedantic-errors", "-pedantic-errors", 0}, 1127 {"--pie", "-pie", 0}, 1128 {"--pipe", "-pipe", 0}, 1129 {"--prefix", "-B", "a"}, 1130 {"--preprocess", "-E", 0}, 1131 {"--print-search-dirs", "-print-search-dirs", 0}, 1132 {"--print-file-name", "-print-file-name=", "aj"}, 1133 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0}, 1134 {"--print-missing-file-dependencies", "-MG", 0}, 1135 {"--print-multi-lib", "-print-multi-lib", 0}, 1136 {"--print-multi-directory", "-print-multi-directory", 0}, 1137 {"--print-multi-os-directory", "-print-multi-os-directory", 0}, 1138 {"--print-prog-name", "-print-prog-name=", "aj"}, 1139 {"--profile", "-p", 0}, 1140 {"--profile-blocks", "-a", 0}, 1141 {"--quiet", "-q", 0}, 1142 {"--resource", "-fcompile-resource=", "aj"}, 1143 {"--save-temps", "-save-temps", 0}, 1144 {"--shared", "-shared", 0}, 1145 {"--silent", "-q", 0}, 1146 {"--specs", "-specs=", "aj"}, 1147 {"--static", "-static", 0}, 1148 {"--std", "-std=", "aj"}, 1149 {"--symbolic", "-symbolic", 0}, 1150 {"--sysroot", "--sysroot=", "aj"}, 1151 {"--time", "-time", 0}, 1152 {"--trace-includes", "-H", 0}, 1153 {"--traditional", "-traditional", 0}, 1154 {"--traditional-cpp", "-traditional-cpp", 0}, 1155 {"--trigraphs", "-trigraphs", 0}, 1156 {"--undefine-macro", "-U", "aj"}, 1157 {"--user-dependencies", "-MM", 0}, 1158 {"--verbose", "-v", 0}, 1159 {"--warn-", "-W", "*j"}, 1160 {"--write-dependencies", "-MD", 0}, 1161 {"--write-user-dependencies", "-MMD", 0}, 1162 {"--", "-f", "*j"} 1163 }; 1164 1165 1166#ifdef TARGET_OPTION_TRANSLATE_TABLE 1167static const struct { 1168 const char *const option_found; 1169 const char *const replacements; 1170} target_option_translations[] = 1171{ 1172 TARGET_OPTION_TRANSLATE_TABLE, 1173 { 0, 0 } 1174}; 1175#endif 1176 1177/* Translate the options described by *ARGCP and *ARGVP. 1178 Make a new vector and store it back in *ARGVP, 1179 and store its length in *ARGVC. */ 1180 1181static void 1182translate_options (int *argcp, const char *const **argvp) 1183{ 1184 int i; 1185 int argc = *argcp; 1186 const char *const *argv = *argvp; 1187 int newvsize = (argc + 2) * 2 * sizeof (const char *); 1188 const char **newv = xmalloc (newvsize); 1189 int newindex = 0; 1190 1191 i = 0; 1192 newv[newindex++] = argv[i++]; 1193 1194 while (i < argc) 1195 { 1196#ifdef TARGET_OPTION_TRANSLATE_TABLE 1197 int tott_idx; 1198 1199 for (tott_idx = 0; 1200 target_option_translations[tott_idx].option_found; 1201 tott_idx++) 1202 { 1203 if (strcmp (target_option_translations[tott_idx].option_found, 1204 argv[i]) == 0) 1205 { 1206 int spaces = 1; 1207 const char *sp; 1208 char *np; 1209 1210 for (sp = target_option_translations[tott_idx].replacements; 1211 *sp; sp++) 1212 { 1213 if (*sp == ' ') 1214 spaces ++; 1215 } 1216 1217 newvsize += spaces * sizeof (const char *); 1218 newv = xrealloc (newv, newvsize); 1219 1220 sp = target_option_translations[tott_idx].replacements; 1221 np = xstrdup (sp); 1222 1223 while (1) 1224 { 1225 while (*np == ' ') 1226 np++; 1227 if (*np == 0) 1228 break; 1229 newv[newindex++] = np; 1230 while (*np != ' ' && *np) 1231 np++; 1232 if (*np == 0) 1233 break; 1234 *np++ = 0; 1235 } 1236 1237 i ++; 1238 break; 1239 } 1240 } 1241 if (target_option_translations[tott_idx].option_found) 1242 continue; 1243#endif 1244 1245 /* Translate -- options. */ 1246 if (argv[i][0] == '-' && argv[i][1] == '-') 1247 { 1248 size_t j; 1249 /* Find a mapping that applies to this option. */ 1250 for (j = 0; j < ARRAY_SIZE (option_map); j++) 1251 { 1252 size_t optlen = strlen (option_map[j].name); 1253 size_t arglen = strlen (argv[i]); 1254 size_t complen = arglen > optlen ? optlen : arglen; 1255 const char *arginfo = option_map[j].arg_info; 1256 1257 if (arginfo == 0) 1258 arginfo = ""; 1259 1260 if (!strncmp (argv[i], option_map[j].name, complen)) 1261 { 1262 const char *arg = 0; 1263 1264 if (arglen < optlen) 1265 { 1266 size_t k; 1267 for (k = j + 1; k < ARRAY_SIZE (option_map); k++) 1268 if (strlen (option_map[k].name) >= arglen 1269 && !strncmp (argv[i], option_map[k].name, arglen)) 1270 { 1271 error ("ambiguous abbreviation %s", argv[i]); 1272 break; 1273 } 1274 1275 if (k != ARRAY_SIZE (option_map)) 1276 break; 1277 } 1278 1279 if (arglen > optlen) 1280 { 1281 /* If the option has an argument, accept that. */ 1282 if (argv[i][optlen] == '=') 1283 arg = argv[i] + optlen + 1; 1284 1285 /* If this mapping requires extra text at end of name, 1286 accept that as "argument". */ 1287 else if (strchr (arginfo, '*') != 0) 1288 arg = argv[i] + optlen; 1289 1290 /* Otherwise, extra text at end means mismatch. 1291 Try other mappings. */ 1292 else 1293 continue; 1294 } 1295 1296 else if (strchr (arginfo, '*') != 0) 1297 { 1298 error ("incomplete '%s' option", option_map[j].name); 1299 break; 1300 } 1301 1302 /* Handle arguments. */ 1303 if (strchr (arginfo, 'a') != 0) 1304 { 1305 if (arg == 0) 1306 { 1307 if (i + 1 == argc) 1308 { 1309 error ("missing argument to '%s' option", 1310 option_map[j].name); 1311 break; 1312 } 1313 1314 arg = argv[++i]; 1315 } 1316 } 1317 else if (strchr (arginfo, '*') != 0) 1318 ; 1319 else if (strchr (arginfo, 'o') == 0) 1320 { 1321 if (arg != 0) 1322 error ("extraneous argument to '%s' option", 1323 option_map[j].name); 1324 arg = 0; 1325 } 1326 1327 /* Store the translation as one argv elt or as two. */ 1328 if (arg != 0 && strchr (arginfo, 'j') != 0) 1329 newv[newindex++] = concat (option_map[j].equivalent, arg, 1330 NULL); 1331 else if (arg != 0) 1332 { 1333 newv[newindex++] = option_map[j].equivalent; 1334 newv[newindex++] = arg; 1335 } 1336 else 1337 newv[newindex++] = option_map[j].equivalent; 1338 1339 break; 1340 } 1341 } 1342 i++; 1343 } 1344 1345 /* Handle old-fashioned options--just copy them through, 1346 with their arguments. */ 1347 else if (argv[i][0] == '-') 1348 { 1349 const char *p = argv[i] + 1; 1350 int c = *p; 1351 int nskip = 1; 1352 1353 if (SWITCH_TAKES_ARG (c) > (p[1] != 0)) 1354 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0); 1355 else if (WORD_SWITCH_TAKES_ARG (p)) 1356 nskip += WORD_SWITCH_TAKES_ARG (p); 1357 else if ((c == 'B' || c == 'b' || c == 'x') 1358 && p[1] == 0) 1359 nskip += 1; 1360 else if (! strcmp (p, "Xlinker")) 1361 nskip += 1; 1362 else if (! strcmp (p, "Xpreprocessor")) 1363 nskip += 1; 1364 else if (! strcmp (p, "Xassembler")) 1365 nskip += 1; 1366 1367 /* Watch out for an option at the end of the command line that 1368 is missing arguments, and avoid skipping past the end of the 1369 command line. */ 1370 if (nskip + i > argc) 1371 nskip = argc - i; 1372 1373 while (nskip > 0) 1374 { 1375 newv[newindex++] = argv[i++]; 1376 nskip--; 1377 } 1378 } 1379 else 1380 /* Ordinary operands, or +e options. */ 1381 newv[newindex++] = argv[i++]; 1382 } 1383 1384 newv[newindex] = 0; 1385 1386 *argvp = newv; 1387 *argcp = newindex; 1388} 1389 1390static char * 1391skip_whitespace (char *p) 1392{ 1393 while (1) 1394 { 1395 /* A fully-blank line is a delimiter in the SPEC file and shouldn't 1396 be considered whitespace. */ 1397 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n') 1398 return p + 1; 1399 else if (*p == '\n' || *p == ' ' || *p == '\t') 1400 p++; 1401 else if (*p == '#') 1402 { 1403 while (*p != '\n') 1404 p++; 1405 p++; 1406 } 1407 else 1408 break; 1409 } 1410 1411 return p; 1412} 1413/* Structures to keep track of prefixes to try when looking for files. */ 1414 1415struct prefix_list 1416{ 1417 const char *prefix; /* String to prepend to the path. */ 1418 struct prefix_list *next; /* Next in linked list. */ 1419 int require_machine_suffix; /* Don't use without machine_suffix. */ 1420 /* 2 means try both machine_suffix and just_machine_suffix. */ 1421 int priority; /* Sort key - priority within list. */ 1422 int os_multilib; /* 1 if OS multilib scheme should be used, 1423 0 for GCC multilib scheme. */ 1424}; 1425 1426struct path_prefix 1427{ 1428 struct prefix_list *plist; /* List of prefixes to try */ 1429 int max_len; /* Max length of a prefix in PLIST */ 1430 const char *name; /* Name of this list (used in config stuff) */ 1431}; 1432 1433/* List of prefixes to try when looking for executables. */ 1434 1435static struct path_prefix exec_prefixes = { 0, 0, "exec" }; 1436 1437/* List of prefixes to try when looking for startup (crt0) files. */ 1438 1439static struct path_prefix startfile_prefixes = { 0, 0, "startfile" }; 1440 1441/* List of prefixes to try when looking for include files. */ 1442 1443static struct path_prefix include_prefixes = { 0, 0, "include" }; 1444 1445/* Suffix to attach to directories searched for commands. 1446 This looks like `MACHINE/VERSION/'. */ 1447 1448static const char *machine_suffix = 0; 1449 1450/* Suffix to attach to directories searched for commands. 1451 This is just `MACHINE/'. */ 1452 1453static const char *just_machine_suffix = 0; 1454 1455/* Adjusted value of GCC_EXEC_PREFIX envvar. */ 1456 1457static const char *gcc_exec_prefix; 1458 1459/* Adjusted value of standard_libexec_prefix. */ 1460 1461static const char *gcc_libexec_prefix; 1462 1463/* Default prefixes to attach to command names. */ 1464 1465#ifndef STANDARD_STARTFILE_PREFIX_1 1466#define STANDARD_STARTFILE_PREFIX_1 "/lib/" 1467#endif 1468#ifndef STANDARD_STARTFILE_PREFIX_2 1469#define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/" 1470#endif 1471 1472#ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */ 1473#undef MD_EXEC_PREFIX 1474#undef MD_STARTFILE_PREFIX 1475#undef MD_STARTFILE_PREFIX_1 1476#endif 1477 1478/* If no prefixes defined, use the null string, which will disable them. */ 1479#ifndef MD_EXEC_PREFIX 1480#define MD_EXEC_PREFIX "" 1481#endif 1482#ifndef MD_STARTFILE_PREFIX 1483#define MD_STARTFILE_PREFIX "" 1484#endif 1485#ifndef MD_STARTFILE_PREFIX_1 1486#define MD_STARTFILE_PREFIX_1 "" 1487#endif 1488 1489static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX; 1490static const char *const standard_exec_prefix_1 = "/usr/libexec/gcc/"; 1491static const char *const standard_exec_prefix_2 = "/usr/lib/gcc/"; 1492static const char *md_exec_prefix = MD_EXEC_PREFIX; 1493 1494static const char *md_startfile_prefix = MD_STARTFILE_PREFIX; 1495static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1; 1496static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX; 1497static const char *const standard_startfile_prefix_1 1498 = STANDARD_STARTFILE_PREFIX_1; 1499static const char *const standard_startfile_prefix_2 1500 = STANDARD_STARTFILE_PREFIX_2; 1501 1502static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX; 1503static const char *tooldir_prefix; 1504 1505#ifndef FREEBSD_NATIVE 1506static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX; 1507#endif /* not FREEBSD_NATIVE */ 1508 1509static const char *standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX; 1510 1511/* Subdirectory to use for locating libraries. Set by 1512 set_multilib_dir based on the compilation options. */ 1513 1514static const char *multilib_dir; 1515 1516/* Subdirectory to use for locating libraries in OS conventions. Set by 1517 set_multilib_dir based on the compilation options. */ 1518 1519static const char *multilib_os_dir; 1520 1521/* Structure to keep track of the specs that have been defined so far. 1522 These are accessed using %(specname) or %[specname] in a compiler 1523 or link spec. */ 1524 1525struct spec_list 1526{ 1527 /* The following 2 fields must be first */ 1528 /* to allow EXTRA_SPECS to be initialized */ 1529 const char *name; /* name of the spec. */ 1530 const char *ptr; /* available ptr if no static pointer */ 1531 1532 /* The following fields are not initialized */ 1533 /* by EXTRA_SPECS */ 1534 const char **ptr_spec; /* pointer to the spec itself. */ 1535 struct spec_list *next; /* Next spec in linked list. */ 1536 int name_len; /* length of the name */ 1537 int alloc_p; /* whether string was allocated */ 1538}; 1539 1540#define INIT_STATIC_SPEC(NAME,PTR) \ 1541{ NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 } 1542 1543/* List of statically defined specs. */ 1544static struct spec_list static_specs[] = 1545{ 1546 INIT_STATIC_SPEC ("asm", &asm_spec), 1547 INIT_STATIC_SPEC ("asm_debug", &asm_debug), 1548 INIT_STATIC_SPEC ("asm_final", &asm_final_spec), 1549 INIT_STATIC_SPEC ("asm_options", &asm_options), 1550 INIT_STATIC_SPEC ("invoke_as", &invoke_as), 1551 INIT_STATIC_SPEC ("cpp", &cpp_spec), 1552 INIT_STATIC_SPEC ("cpp_options", &cpp_options), 1553 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options), 1554 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options), 1555 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp), 1556 INIT_STATIC_SPEC ("cc1", &cc1_spec), 1557 INIT_STATIC_SPEC ("cc1_options", &cc1_options), 1558 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec), 1559 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec), 1560 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec), 1561 INIT_STATIC_SPEC ("endfile", &endfile_spec), 1562 INIT_STATIC_SPEC ("link", &link_spec), 1563 INIT_STATIC_SPEC ("lib", &lib_spec), 1564 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec), 1565 INIT_STATIC_SPEC ("mflib", &mflib_spec), 1566 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec), 1567 INIT_STATIC_SPEC ("libgcc", &libgcc_spec), 1568 INIT_STATIC_SPEC ("startfile", &startfile_spec), 1569 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces), 1570 INIT_STATIC_SPEC ("cross_compile", &cross_compile), 1571 INIT_STATIC_SPEC ("version", &compiler_version), 1572 INIT_STATIC_SPEC ("multilib", &multilib_select), 1573 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults), 1574 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra), 1575 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches), 1576 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions), 1577 INIT_STATIC_SPEC ("multilib_options", &multilib_options), 1578 INIT_STATIC_SPEC ("linker", &linker_name_spec), 1579 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec), 1580 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix), 1581 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix), 1582 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1), 1583 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec), 1584 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec), 1585 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec), 1586 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec), 1587}; 1588 1589#ifdef EXTRA_SPECS /* additional specs needed */ 1590/* Structure to keep track of just the first two args of a spec_list. 1591 That is all that the EXTRA_SPECS macro gives us. */ 1592struct spec_list_1 1593{ 1594 const char *const name; 1595 const char *const ptr; 1596}; 1597 1598static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS }; 1599static struct spec_list *extra_specs = (struct spec_list *) 0; 1600#endif 1601 1602/* List of dynamically allocates specs that have been defined so far. */ 1603 1604static struct spec_list *specs = (struct spec_list *) 0; 1605 1606/* List of static spec functions. */ 1607 1608static const struct spec_function static_spec_functions[] = 1609{ 1610 { "if-exists", if_exists_spec_function }, 1611 { "if-exists-else", if_exists_else_spec_function }, 1612 { "replace-outfile", replace_outfile_spec_function }, 1613 { "version-compare", version_compare_spec_function }, 1614 { "include", include_spec_function }, 1615#ifdef EXTRA_SPEC_FUNCTIONS 1616 EXTRA_SPEC_FUNCTIONS 1617#endif 1618 { 0, 0 } 1619}; 1620 1621static int processing_spec_function; 1622 1623/* Add appropriate libgcc specs to OBSTACK, taking into account 1624 various permutations of -shared-libgcc, -shared, and such. */ 1625 1626#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) 1627 1628#ifndef USE_LD_AS_NEEDED 1629#define USE_LD_AS_NEEDED 0 1630#endif 1631 1632static void 1633init_gcc_specs (struct obstack *obstack, const char *shared_name, 1634 const char *static_name, const char *eh_name) 1635{ 1636 char *buf; 1637 1638 buf = concat ("%{pg:", static_name, " ", eh_name, "} %{!pg:", 1639 "%{static|static-libgcc|pg:", static_name, " ", eh_name, "}" 1640 "%{!static:%{!static-libgcc:" 1641#if USE_LD_AS_NEEDED 1642 "%{!shared-libgcc:", 1643 static_name, " --as-needed ", shared_name, " --no-as-needed" 1644 "}" 1645 "%{shared-libgcc:", 1646 shared_name, "%{!shared: ", static_name, "}" 1647 "}" 1648#else 1649 "%{!shared:" 1650 "%{!shared-libgcc:", static_name, " ", eh_name, "}" 1651 "%{shared-libgcc:", shared_name, " ", static_name, "}" 1652 "}" 1653#ifdef LINK_EH_SPEC 1654 "%{shared:" 1655 "%{shared-libgcc:", shared_name, "}" 1656 "%{!shared-libgcc:", static_name, "}" 1657 "}" 1658#else 1659 "%{shared:", shared_name, "}" 1660#endif 1661#endif 1662 "}}}", NULL); 1663 1664 obstack_grow (obstack, buf, strlen (buf)); 1665 free (buf); 1666} 1667#endif /* ENABLE_SHARED_LIBGCC */ 1668 1669/* Initialize the specs lookup routines. */ 1670 1671static void 1672init_spec (void) 1673{ 1674 struct spec_list *next = (struct spec_list *) 0; 1675 struct spec_list *sl = (struct spec_list *) 0; 1676 int i; 1677 1678 if (specs) 1679 return; /* Already initialized. */ 1680 1681 if (verbose_flag) 1682 notice ("Using built-in specs.\n"); 1683 1684#ifdef EXTRA_SPECS 1685 extra_specs = xcalloc (sizeof (struct spec_list), 1686 ARRAY_SIZE (extra_specs_1)); 1687 1688 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--) 1689 { 1690 sl = &extra_specs[i]; 1691 sl->name = extra_specs_1[i].name; 1692 sl->ptr = extra_specs_1[i].ptr; 1693 sl->next = next; 1694 sl->name_len = strlen (sl->name); 1695 sl->ptr_spec = &sl->ptr; 1696 next = sl; 1697 } 1698#endif 1699 1700 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes 1701 on ?: in file-scope variable initializations. */ 1702 asm_debug = ASM_DEBUG_SPEC; 1703 1704 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) 1705 { 1706 sl = &static_specs[i]; 1707 sl->next = next; 1708 next = sl; 1709 } 1710 1711#if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC) 1712 /* ??? If neither -shared-libgcc nor --static-libgcc was 1713 seen, then we should be making an educated guess. Some proposed 1714 heuristics for ELF include: 1715 1716 (1) If "-Wl,--export-dynamic", then it's a fair bet that the 1717 program will be doing dynamic loading, which will likely 1718 need the shared libgcc. 1719 1720 (2) If "-ldl", then it's also a fair bet that we're doing 1721 dynamic loading. 1722 1723 (3) For each ET_DYN we're linking against (either through -lfoo 1724 or /some/path/foo.so), check to see whether it or one of 1725 its dependencies depends on a shared libgcc. 1726 1727 (4) If "-shared" 1728 1729 If the runtime is fixed to look for program headers instead 1730 of calling __register_frame_info at all, for each object, 1731 use the shared libgcc if any EH symbol referenced. 1732 1733 If crtstuff is fixed to not invoke __register_frame_info 1734 automatically, for each object, use the shared libgcc if 1735 any non-empty unwind section found. 1736 1737 Doing any of this probably requires invoking an external program to 1738 do the actual object file scanning. */ 1739 { 1740 const char *p = libgcc_spec; 1741 int in_sep = 1; 1742 1743 /* Transform the extant libgcc_spec into one that uses the shared libgcc 1744 when given the proper command line arguments. */ 1745 while (*p) 1746 { 1747 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0) 1748 { 1749 init_gcc_specs (&obstack, 1750 "-lgcc_s" 1751#ifdef USE_LIBUNWIND_EXCEPTIONS 1752 " -lunwind" 1753#endif 1754 , 1755#ifdef FREEBSD_NATIVE 1756 LIBGCC_STATIC_LIB_SPEC, 1757 LIBGCC_EH_STATIC_LIB_SPEC 1758#else 1759 "-lgcc", 1760 "-lgcc_eh" 1761#endif 1762#ifdef USE_LIBUNWIND_EXCEPTIONS 1763# ifdef HAVE_LD_STATIC_DYNAMIC 1764 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}" 1765# else 1766 " -lunwind" 1767# endif 1768#endif 1769 ); 1770 1771 p += 5; 1772 in_sep = 0; 1773 } 1774 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0) 1775 { 1776 /* Ug. We don't know shared library extensions. Hope that 1777 systems that use this form don't do shared libraries. */ 1778 init_gcc_specs (&obstack, 1779 "-lgcc_s", 1780 "libgcc.a%s", 1781 "libgcc_eh.a%s" 1782#ifdef USE_LIBUNWIND_EXCEPTIONS 1783 " -lunwind" 1784#endif 1785 ); 1786 p += 10; 1787 in_sep = 0; 1788 } 1789 else 1790 { 1791 obstack_1grow (&obstack, *p); 1792 in_sep = (*p == ' '); 1793 p += 1; 1794 } 1795 } 1796 1797 obstack_1grow (&obstack, '\0'); 1798 libgcc_spec = XOBFINISH (&obstack, const char *); 1799 } 1800#endif 1801#ifdef USE_AS_TRADITIONAL_FORMAT 1802 /* Prepend "--traditional-format" to whatever asm_spec we had before. */ 1803 { 1804 static const char tf[] = "--traditional-format "; 1805 obstack_grow (&obstack, tf, sizeof(tf) - 1); 1806 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec)); 1807 asm_spec = XOBFINISH (&obstack, const char *); 1808 } 1809#endif 1810#ifdef LINK_EH_SPEC 1811 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */ 1812 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1); 1813 obstack_grow0 (&obstack, link_spec, strlen (link_spec)); 1814 link_spec = XOBFINISH (&obstack, const char *); 1815#endif 1816 1817 specs = sl; 1818} 1819 1820/* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is 1821 removed; If the spec starts with a + then SPEC is added to the end of the 1822 current spec. */ 1823 1824static void 1825set_spec (const char *name, const char *spec) 1826{ 1827 struct spec_list *sl; 1828 const char *old_spec; 1829 int name_len = strlen (name); 1830 int i; 1831 1832 /* If this is the first call, initialize the statically allocated specs. */ 1833 if (!specs) 1834 { 1835 struct spec_list *next = (struct spec_list *) 0; 1836 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) 1837 { 1838 sl = &static_specs[i]; 1839 sl->next = next; 1840 next = sl; 1841 } 1842 specs = sl; 1843 } 1844 1845 /* See if the spec already exists. */ 1846 for (sl = specs; sl; sl = sl->next) 1847 if (name_len == sl->name_len && !strcmp (sl->name, name)) 1848 break; 1849 1850 if (!sl) 1851 { 1852 /* Not found - make it. */ 1853 sl = XNEW (struct spec_list); 1854 sl->name = xstrdup (name); 1855 sl->name_len = name_len; 1856 sl->ptr_spec = &sl->ptr; 1857 sl->alloc_p = 0; 1858 *(sl->ptr_spec) = ""; 1859 sl->next = specs; 1860 specs = sl; 1861 } 1862 1863 old_spec = *(sl->ptr_spec); 1864 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1])) 1865 ? concat (old_spec, spec + 1, NULL) 1866 : xstrdup (spec)); 1867 1868#ifdef DEBUG_SPECS 1869 if (verbose_flag) 1870 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec)); 1871#endif 1872 1873 /* Free the old spec. */ 1874 if (old_spec && sl->alloc_p) 1875 free ((void *) old_spec); 1876 1877 sl->alloc_p = 1; 1878} 1879 1880/* Accumulate a command (program name and args), and run it. */ 1881 1882/* Vector of pointers to arguments in the current line of specifications. */ 1883 1884static const char **argbuf; 1885 1886/* Number of elements allocated in argbuf. */ 1887 1888static int argbuf_length; 1889 1890/* Number of elements in argbuf currently in use (containing args). */ 1891 1892static int argbuf_index; 1893 1894/* Position in the argbuf array containing the name of the output file 1895 (the value associated with the "-o" flag). */ 1896 1897static int have_o_argbuf_index = 0; 1898 1899/* Were the options -c or -S passed. */ 1900static int have_c = 0; 1901 1902/* Was the option -o passed. */ 1903static int have_o = 0; 1904 1905/* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated 1906 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for 1907 it here. */ 1908 1909static struct temp_name { 1910 const char *suffix; /* suffix associated with the code. */ 1911 int length; /* strlen (suffix). */ 1912 int unique; /* Indicates whether %g or %u/%U was used. */ 1913 const char *filename; /* associated filename. */ 1914 int filename_length; /* strlen (filename). */ 1915 struct temp_name *next; 1916} *temp_names; 1917 1918/* Number of commands executed so far. */ 1919 1920static int execution_count; 1921 1922/* Number of commands that exited with a signal. */ 1923 1924static int signal_count; 1925 1926/* Name with which this program was invoked. */ 1927 1928static const char *programname; 1929 1930/* Allocate the argument vector. */ 1931 1932static void 1933alloc_args (void) 1934{ 1935 argbuf_length = 10; 1936 argbuf = XNEWVEC (const char *, argbuf_length); 1937} 1938 1939/* Clear out the vector of arguments (after a command is executed). */ 1940 1941static void 1942clear_args (void) 1943{ 1944 argbuf_index = 0; 1945} 1946 1947/* Add one argument to the vector at the end. 1948 This is done when a space is seen or at the end of the line. 1949 If DELETE_ALWAYS is nonzero, the arg is a filename 1950 and the file should be deleted eventually. 1951 If DELETE_FAILURE is nonzero, the arg is a filename 1952 and the file should be deleted if this compilation fails. */ 1953 1954static void 1955store_arg (const char *arg, int delete_always, int delete_failure) 1956{ 1957 if (argbuf_index + 1 == argbuf_length) 1958 argbuf = xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *)); 1959 1960 argbuf[argbuf_index++] = arg; 1961 argbuf[argbuf_index] = 0; 1962 1963 if (strcmp (arg, "-o") == 0) 1964 have_o_argbuf_index = argbuf_index; 1965 if (delete_always || delete_failure) 1966 record_temp_file (arg, delete_always, delete_failure); 1967} 1968 1969/* Load specs from a file name named FILENAME, replacing occurrences of 1970 various different types of line-endings, \r\n, \n\r and just \r, with 1971 a single \n. */ 1972 1973static char * 1974load_specs (const char *filename) 1975{ 1976 int desc; 1977 int readlen; 1978 struct stat statbuf; 1979 char *buffer; 1980 char *buffer_p; 1981 char *specs; 1982 char *specs_p; 1983 1984 if (verbose_flag) 1985 notice ("Reading specs from %s\n", filename); 1986 1987 /* Open and stat the file. */ 1988 desc = open (filename, O_RDONLY, 0); 1989 if (desc < 0) 1990 pfatal_with_name (filename); 1991 if (stat (filename, &statbuf) < 0) 1992 pfatal_with_name (filename); 1993 1994 /* Read contents of file into BUFFER. */ 1995 buffer = XNEWVEC (char, statbuf.st_size + 1); 1996 readlen = read (desc, buffer, (unsigned) statbuf.st_size); 1997 if (readlen < 0) 1998 pfatal_with_name (filename); 1999 buffer[readlen] = 0; 2000 close (desc); 2001 2002 specs = XNEWVEC (char, readlen + 1); 2003 specs_p = specs; 2004 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++) 2005 { 2006 int skip = 0; 2007 char c = *buffer_p; 2008 if (c == '\r') 2009 { 2010 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */ 2011 skip = 1; 2012 else if (*(buffer_p + 1) == '\n') /* \r\n */ 2013 skip = 1; 2014 else /* \r */ 2015 c = '\n'; 2016 } 2017 if (! skip) 2018 *specs_p++ = c; 2019 } 2020 *specs_p = '\0'; 2021 2022 free (buffer); 2023 return (specs); 2024} 2025 2026/* Read compilation specs from a file named FILENAME, 2027 replacing the default ones. 2028 2029 A suffix which starts with `*' is a definition for 2030 one of the machine-specific sub-specs. The "suffix" should be 2031 *asm, *cc1, *cpp, *link, *startfile, etc. 2032 The corresponding spec is stored in asm_spec, etc., 2033 rather than in the `compilers' vector. 2034 2035 Anything invalid in the file is a fatal error. */ 2036 2037static void 2038read_specs (const char *filename, int main_p) 2039{ 2040 char *buffer; 2041 char *p; 2042 2043 buffer = load_specs (filename); 2044 2045 /* Scan BUFFER for specs, putting them in the vector. */ 2046 p = buffer; 2047 while (1) 2048 { 2049 char *suffix; 2050 char *spec; 2051 char *in, *out, *p1, *p2, *p3; 2052 2053 /* Advance P in BUFFER to the next nonblank nocomment line. */ 2054 p = skip_whitespace (p); 2055 if (*p == 0) 2056 break; 2057 2058 /* Is this a special command that starts with '%'? */ 2059 /* Don't allow this for the main specs file, since it would 2060 encourage people to overwrite it. */ 2061 if (*p == '%' && !main_p) 2062 { 2063 p1 = p; 2064 while (*p && *p != '\n') 2065 p++; 2066 2067 /* Skip '\n'. */ 2068 p++; 2069 2070 if (!strncmp (p1, "%include", sizeof ("%include") - 1) 2071 && (p1[sizeof "%include" - 1] == ' ' 2072 || p1[sizeof "%include" - 1] == '\t')) 2073 { 2074 char *new_filename; 2075 2076 p1 += sizeof ("%include"); 2077 while (*p1 == ' ' || *p1 == '\t') 2078 p1++; 2079 2080 if (*p1++ != '<' || p[-2] != '>') 2081 fatal ("specs %%include syntax malformed after %ld characters", 2082 (long) (p1 - buffer + 1)); 2083 2084 p[-2] = '\0'; 2085 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); 2086 read_specs (new_filename ? new_filename : p1, FALSE); 2087 continue; 2088 } 2089 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1) 2090 && (p1[sizeof "%include_noerr" - 1] == ' ' 2091 || p1[sizeof "%include_noerr" - 1] == '\t')) 2092 { 2093 char *new_filename; 2094 2095 p1 += sizeof "%include_noerr"; 2096 while (*p1 == ' ' || *p1 == '\t') 2097 p1++; 2098 2099 if (*p1++ != '<' || p[-2] != '>') 2100 fatal ("specs %%include syntax malformed after %ld characters", 2101 (long) (p1 - buffer + 1)); 2102 2103 p[-2] = '\0'; 2104 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true); 2105 if (new_filename) 2106 read_specs (new_filename, FALSE); 2107 else if (verbose_flag) 2108 notice ("could not find specs file %s\n", p1); 2109 continue; 2110 } 2111 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1) 2112 && (p1[sizeof "%rename" - 1] == ' ' 2113 || p1[sizeof "%rename" - 1] == '\t')) 2114 { 2115 int name_len; 2116 struct spec_list *sl; 2117 struct spec_list *newsl; 2118 2119 /* Get original name. */ 2120 p1 += sizeof "%rename"; 2121 while (*p1 == ' ' || *p1 == '\t') 2122 p1++; 2123 2124 if (! ISALPHA ((unsigned char) *p1)) 2125 fatal ("specs %%rename syntax malformed after %ld characters", 2126 (long) (p1 - buffer)); 2127 2128 p2 = p1; 2129 while (*p2 && !ISSPACE ((unsigned char) *p2)) 2130 p2++; 2131 2132 if (*p2 != ' ' && *p2 != '\t') 2133 fatal ("specs %%rename syntax malformed after %ld characters", 2134 (long) (p2 - buffer)); 2135 2136 name_len = p2 - p1; 2137 *p2++ = '\0'; 2138 while (*p2 == ' ' || *p2 == '\t') 2139 p2++; 2140 2141 if (! ISALPHA ((unsigned char) *p2)) 2142 fatal ("specs %%rename syntax malformed after %ld characters", 2143 (long) (p2 - buffer)); 2144 2145 /* Get new spec name. */ 2146 p3 = p2; 2147 while (*p3 && !ISSPACE ((unsigned char) *p3)) 2148 p3++; 2149 2150 if (p3 != p - 1) 2151 fatal ("specs %%rename syntax malformed after %ld characters", 2152 (long) (p3 - buffer)); 2153 *p3 = '\0'; 2154 2155 for (sl = specs; sl; sl = sl->next) 2156 if (name_len == sl->name_len && !strcmp (sl->name, p1)) 2157 break; 2158 2159 if (!sl) 2160 fatal ("specs %s spec was not found to be renamed", p1); 2161 2162 if (strcmp (p1, p2) == 0) 2163 continue; 2164 2165 for (newsl = specs; newsl; newsl = newsl->next) 2166 if (strcmp (newsl->name, p2) == 0) 2167 fatal ("%s: attempt to rename spec '%s' to already defined spec '%s'", 2168 filename, p1, p2); 2169 2170 if (verbose_flag) 2171 { 2172 notice ("rename spec %s to %s\n", p1, p2); 2173#ifdef DEBUG_SPECS 2174 notice ("spec is '%s'\n\n", *(sl->ptr_spec)); 2175#endif 2176 } 2177 2178 set_spec (p2, *(sl->ptr_spec)); 2179 if (sl->alloc_p) 2180 free ((void *) *(sl->ptr_spec)); 2181 2182 *(sl->ptr_spec) = ""; 2183 sl->alloc_p = 0; 2184 continue; 2185 } 2186 else 2187 fatal ("specs unknown %% command after %ld characters", 2188 (long) (p1 - buffer)); 2189 } 2190 2191 /* Find the colon that should end the suffix. */ 2192 p1 = p; 2193 while (*p1 && *p1 != ':' && *p1 != '\n') 2194 p1++; 2195 2196 /* The colon shouldn't be missing. */ 2197 if (*p1 != ':') 2198 fatal ("specs file malformed after %ld characters", 2199 (long) (p1 - buffer)); 2200 2201 /* Skip back over trailing whitespace. */ 2202 p2 = p1; 2203 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) 2204 p2--; 2205 2206 /* Copy the suffix to a string. */ 2207 suffix = save_string (p, p2 - p); 2208 /* Find the next line. */ 2209 p = skip_whitespace (p1 + 1); 2210 if (p[1] == 0) 2211 fatal ("specs file malformed after %ld characters", 2212 (long) (p - buffer)); 2213 2214 p1 = p; 2215 /* Find next blank line or end of string. */ 2216 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0'))) 2217 p1++; 2218 2219 /* Specs end at the blank line and do not include the newline. */ 2220 spec = save_string (p, p1 - p); 2221 p = p1; 2222 2223 /* Delete backslash-newline sequences from the spec. */ 2224 in = spec; 2225 out = spec; 2226 while (*in != 0) 2227 { 2228 if (in[0] == '\\' && in[1] == '\n') 2229 in += 2; 2230 else if (in[0] == '#') 2231 while (*in && *in != '\n') 2232 in++; 2233 2234 else 2235 *out++ = *in++; 2236 } 2237 *out = 0; 2238 2239 if (suffix[0] == '*') 2240 { 2241 if (! strcmp (suffix, "*link_command")) 2242 link_command_spec = spec; 2243 else 2244 set_spec (suffix + 1, spec); 2245 } 2246 else 2247 { 2248 /* Add this pair to the vector. */ 2249 compilers 2250 = xrealloc (compilers, 2251 (n_compilers + 2) * sizeof (struct compiler)); 2252 2253 compilers[n_compilers].suffix = suffix; 2254 compilers[n_compilers].spec = spec; 2255 n_compilers++; 2256 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]); 2257 } 2258 2259 if (*suffix == 0) 2260 link_command_spec = spec; 2261 } 2262 2263 if (link_command_spec == 0) 2264 fatal ("spec file has no spec for linking"); 2265} 2266 2267/* Record the names of temporary files we tell compilers to write, 2268 and delete them at the end of the run. */ 2269 2270/* This is the common prefix we use to make temp file names. 2271 It is chosen once for each run of this program. 2272 It is substituted into a spec by %g or %j. 2273 Thus, all temp file names contain this prefix. 2274 In practice, all temp file names start with this prefix. 2275 2276 This prefix comes from the envvar TMPDIR if it is defined; 2277 otherwise, from the P_tmpdir macro if that is defined; 2278 otherwise, in /usr/tmp or /tmp; 2279 or finally the current directory if all else fails. */ 2280 2281static const char *temp_filename; 2282 2283/* Length of the prefix. */ 2284 2285static int temp_filename_length; 2286 2287/* Define the list of temporary files to delete. */ 2288 2289struct temp_file 2290{ 2291 const char *name; 2292 struct temp_file *next; 2293}; 2294 2295/* Queue of files to delete on success or failure of compilation. */ 2296static struct temp_file *always_delete_queue; 2297/* Queue of files to delete on failure of compilation. */ 2298static struct temp_file *failure_delete_queue; 2299 2300/* Record FILENAME as a file to be deleted automatically. 2301 ALWAYS_DELETE nonzero means delete it if all compilation succeeds; 2302 otherwise delete it in any case. 2303 FAIL_DELETE nonzero means delete it if a compilation step fails; 2304 otherwise delete it in any case. */ 2305 2306void 2307record_temp_file (const char *filename, int always_delete, int fail_delete) 2308{ 2309 char *const name = xstrdup (filename); 2310 2311 if (always_delete) 2312 { 2313 struct temp_file *temp; 2314 for (temp = always_delete_queue; temp; temp = temp->next) 2315 if (! strcmp (name, temp->name)) 2316 goto already1; 2317 2318 temp = XNEW (struct temp_file); 2319 temp->next = always_delete_queue; 2320 temp->name = name; 2321 always_delete_queue = temp; 2322 2323 already1:; 2324 } 2325 2326 if (fail_delete) 2327 { 2328 struct temp_file *temp; 2329 for (temp = failure_delete_queue; temp; temp = temp->next) 2330 if (! strcmp (name, temp->name)) 2331 goto already2; 2332 2333 temp = XNEW (struct temp_file); 2334 temp->next = failure_delete_queue; 2335 temp->name = name; 2336 failure_delete_queue = temp; 2337 2338 already2:; 2339 } 2340} 2341 2342/* Delete all the temporary files whose names we previously recorded. */ 2343 2344#ifndef DELETE_IF_ORDINARY 2345#define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \ 2346do \ 2347 { \ 2348 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \ 2349 if (unlink (NAME) < 0) \ 2350 if (VERBOSE_FLAG) \ 2351 perror_with_name (NAME); \ 2352 } while (0) 2353#endif 2354 2355static void 2356delete_if_ordinary (const char *name) 2357{ 2358 struct stat st; 2359#ifdef DEBUG 2360 int i, c; 2361 2362 printf ("Delete %s? (y or n) ", name); 2363 fflush (stdout); 2364 i = getchar (); 2365 if (i != '\n') 2366 while ((c = getchar ()) != '\n' && c != EOF) 2367 ; 2368 2369 if (i == 'y' || i == 'Y') 2370#endif /* DEBUG */ 2371 DELETE_IF_ORDINARY (name, st, verbose_flag); 2372} 2373 2374static void 2375delete_temp_files (void) 2376{ 2377 struct temp_file *temp; 2378 2379 for (temp = always_delete_queue; temp; temp = temp->next) 2380 delete_if_ordinary (temp->name); 2381 always_delete_queue = 0; 2382} 2383 2384/* Delete all the files to be deleted on error. */ 2385 2386static void 2387delete_failure_queue (void) 2388{ 2389 struct temp_file *temp; 2390 2391 for (temp = failure_delete_queue; temp; temp = temp->next) 2392 delete_if_ordinary (temp->name); 2393} 2394 2395static void 2396clear_failure_queue (void) 2397{ 2398 failure_delete_queue = 0; 2399} 2400 2401/* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK 2402 returns non-NULL. 2403 If DO_MULTI is true iterate over the paths twice, first with multilib 2404 suffix then without, otherwise iterate over the paths once without 2405 adding a multilib suffix. When DO_MULTI is true, some attempt is made 2406 to avoid visiting the same path twice, but we could do better. For 2407 instance, /usr/lib/../lib is considered different from /usr/lib. 2408 At least EXTRA_SPACE chars past the end of the path passed to 2409 CALLBACK are available for use by the callback. 2410 CALLBACK_INFO allows extra parameters to be passed to CALLBACK. 2411 2412 Returns the value returned by CALLBACK. */ 2413 2414static void * 2415for_each_path (const struct path_prefix *paths, 2416 bool do_multi, 2417 size_t extra_space, 2418 void *(*callback) (char *, void *), 2419 void *callback_info) 2420{ 2421 struct prefix_list *pl; 2422 const char *multi_dir = NULL; 2423 const char *multi_os_dir = NULL; 2424 const char *multi_suffix; 2425 const char *just_multi_suffix; 2426 char *path = NULL; 2427 void *ret = NULL; 2428 bool skip_multi_dir = false; 2429 bool skip_multi_os_dir = false; 2430 2431 multi_suffix = machine_suffix; 2432 just_multi_suffix = just_machine_suffix; 2433 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0) 2434 { 2435 multi_dir = concat (multilib_dir, dir_separator_str, NULL); 2436 multi_suffix = concat (multi_suffix, multi_dir, NULL); 2437 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL); 2438 } 2439 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0) 2440 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL); 2441 2442 while (1) 2443 { 2444 size_t multi_dir_len = 0; 2445 size_t multi_os_dir_len = 0; 2446 size_t suffix_len; 2447 size_t just_suffix_len; 2448 size_t len; 2449 2450 if (multi_dir) 2451 multi_dir_len = strlen (multi_dir); 2452 if (multi_os_dir) 2453 multi_os_dir_len = strlen (multi_os_dir); 2454 suffix_len = strlen (multi_suffix); 2455 just_suffix_len = strlen (just_multi_suffix); 2456 2457 if (path == NULL) 2458 { 2459 len = paths->max_len + extra_space + 1; 2460 if (suffix_len > multi_os_dir_len) 2461 len += suffix_len; 2462 else 2463 len += multi_os_dir_len; 2464 path = XNEWVEC (char, len); 2465 } 2466 2467 for (pl = paths->plist; pl != 0; pl = pl->next) 2468 { 2469 len = strlen (pl->prefix); 2470 memcpy (path, pl->prefix, len); 2471 2472 /* Look first in MACHINE/VERSION subdirectory. */ 2473 if (!skip_multi_dir) 2474 { 2475 memcpy (path + len, multi_suffix, suffix_len + 1); 2476 ret = callback (path, callback_info); 2477 if (ret) 2478 break; 2479 } 2480 2481 /* Some paths are tried with just the machine (ie. target) 2482 subdir. This is used for finding as, ld, etc. */ 2483 if (!skip_multi_dir 2484 && pl->require_machine_suffix == 2) 2485 { 2486 memcpy (path + len, just_multi_suffix, just_suffix_len + 1); 2487 ret = callback (path, callback_info); 2488 if (ret) 2489 break; 2490 } 2491 2492 /* Now try the base path. */ 2493 if (!pl->require_machine_suffix 2494 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir)) 2495 { 2496 const char *this_multi; 2497 size_t this_multi_len; 2498 2499 if (pl->os_multilib) 2500 { 2501 this_multi = multi_os_dir; 2502 this_multi_len = multi_os_dir_len; 2503 } 2504 else 2505 { 2506 this_multi = multi_dir; 2507 this_multi_len = multi_dir_len; 2508 } 2509 2510 if (this_multi_len) 2511 memcpy (path + len, this_multi, this_multi_len + 1); 2512 else 2513 path[len] = '\0'; 2514 2515 ret = callback (path, callback_info); 2516 if (ret) 2517 break; 2518 } 2519 } 2520 if (pl) 2521 break; 2522 2523 if (multi_dir == NULL && multi_os_dir == NULL) 2524 break; 2525 2526 /* Run through the paths again, this time without multilibs. 2527 Don't repeat any we have already seen. */ 2528 if (multi_dir) 2529 { 2530 free ((char *) multi_dir); 2531 multi_dir = NULL; 2532 free ((char *) multi_suffix); 2533 multi_suffix = machine_suffix; 2534 free ((char *) just_multi_suffix); 2535 just_multi_suffix = just_machine_suffix; 2536 } 2537 else 2538 skip_multi_dir = true; 2539 if (multi_os_dir) 2540 { 2541 free ((char *) multi_os_dir); 2542 multi_os_dir = NULL; 2543 } 2544 else 2545 skip_multi_os_dir = true; 2546 } 2547 2548 if (multi_dir) 2549 { 2550 free ((char *) multi_dir); 2551 free ((char *) multi_suffix); 2552 free ((char *) just_multi_suffix); 2553 } 2554 if (multi_os_dir) 2555 free ((char *) multi_os_dir); 2556 if (ret != path) 2557 free (path); 2558 return ret; 2559} 2560 2561/* Callback for build_search_list. Adds path to obstack being built. */ 2562 2563struct add_to_obstack_info { 2564 struct obstack *ob; 2565 bool check_dir; 2566 bool first_time; 2567}; 2568 2569static void * 2570add_to_obstack (char *path, void *data) 2571{ 2572 struct add_to_obstack_info *info = data; 2573 2574 if (info->check_dir && !is_directory (path, false)) 2575 return NULL; 2576 2577 if (!info->first_time) 2578 obstack_1grow (info->ob, PATH_SEPARATOR); 2579 2580 obstack_grow (info->ob, path, strlen (path)); 2581 2582 info->first_time = false; 2583 return NULL; 2584} 2585 2586/* Build a list of search directories from PATHS. 2587 PREFIX is a string to prepend to the list. 2588 If CHECK_DIR_P is true we ensure the directory exists. 2589 If DO_MULTI is true, multilib paths are output first, then 2590 non-multilib paths. 2591 This is used mostly by putenv_from_prefixes so we use `collect_obstack'. 2592 It is also used by the --print-search-dirs flag. */ 2593 2594static char * 2595build_search_list (const struct path_prefix *paths, const char *prefix, 2596 bool check_dir, bool do_multi) 2597{ 2598 struct add_to_obstack_info info; 2599 2600 info.ob = &collect_obstack; 2601 info.check_dir = check_dir; 2602 info.first_time = true; 2603 2604 obstack_grow (&collect_obstack, prefix, strlen (prefix)); 2605 obstack_1grow (&collect_obstack, '='); 2606 2607 for_each_path (paths, do_multi, 0, add_to_obstack, &info); 2608 2609 obstack_1grow (&collect_obstack, '\0'); 2610 return XOBFINISH (&collect_obstack, char *); 2611} 2612 2613/* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables 2614 for collect. */ 2615 2616static void 2617putenv_from_prefixes (const struct path_prefix *paths, const char *env_var, 2618 bool do_multi) 2619{ 2620 putenv (build_search_list (paths, env_var, true, do_multi)); 2621} 2622 2623/* Check whether NAME can be accessed in MODE. This is like access, 2624 except that it never considers directories to be executable. */ 2625 2626static int 2627access_check (const char *name, int mode) 2628{ 2629 if (mode == X_OK) 2630 { 2631 struct stat st; 2632 2633 if (stat (name, &st) < 0 2634 || S_ISDIR (st.st_mode)) 2635 return -1; 2636 } 2637 2638 return access (name, mode); 2639} 2640 2641/* Callback for find_a_file. Appends the file name to the directory 2642 path. If the resulting file exists in the right mode, return the 2643 full pathname to the file. */ 2644 2645struct file_at_path_info { 2646 const char *name; 2647 const char *suffix; 2648 int name_len; 2649 int suffix_len; 2650 int mode; 2651}; 2652 2653static void * 2654file_at_path (char *path, void *data) 2655{ 2656 struct file_at_path_info *info = data; 2657 size_t len = strlen (path); 2658 2659 memcpy (path + len, info->name, info->name_len); 2660 len += info->name_len; 2661 2662 /* Some systems have a suffix for executable files. 2663 So try appending that first. */ 2664 if (info->suffix_len) 2665 { 2666 memcpy (path + len, info->suffix, info->suffix_len + 1); 2667 if (access_check (path, info->mode) == 0) 2668 return path; 2669 } 2670 2671 path[len] = '\0'; 2672 if (access_check (path, info->mode) == 0) 2673 return path; 2674 2675 return NULL; 2676} 2677 2678/* Search for NAME using the prefix list PREFIXES. MODE is passed to 2679 access to check permissions. If DO_MULTI is true, search multilib 2680 paths then non-multilib paths, otherwise do not search multilib paths. 2681 Return 0 if not found, otherwise return its name, allocated with malloc. */ 2682 2683static char * 2684find_a_file (const struct path_prefix *pprefix, const char *name, int mode, 2685 bool do_multi) 2686{ 2687 struct file_at_path_info info; 2688 2689#ifdef DEFAULT_ASSEMBLER 2690 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0) 2691 return xstrdup (DEFAULT_ASSEMBLER); 2692#endif 2693 2694#ifdef DEFAULT_LINKER 2695 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0) 2696 return xstrdup (DEFAULT_LINKER); 2697#endif 2698 2699#ifdef FREEBSD_NATIVE 2700 if (! strcmp(name, "include")) 2701 { 2702#ifdef CROSS_INCLUDE_DIR 2703 return xstrdup(CROSS_INCLUDE_DIR); 2704#else 2705 return xstrdup(STANDARD_INCLUDE_DIR); 2706#endif 2707 } 2708#endif 2709 2710 /* Determine the filename to execute (special case for absolute paths). */ 2711 2712 if (IS_ABSOLUTE_PATH (name)) 2713 { 2714 if (access (name, mode) == 0) 2715 return xstrdup (name); 2716 2717 return NULL; 2718 } 2719 2720 info.name = name; 2721 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : ""; 2722 info.name_len = strlen (info.name); 2723 info.suffix_len = strlen (info.suffix); 2724 info.mode = mode; 2725 2726 return for_each_path (pprefix, do_multi, info.name_len + info.suffix_len, 2727 file_at_path, &info); 2728} 2729 2730/* Ranking of prefixes in the sort list. -B prefixes are put before 2731 all others. */ 2732 2733enum path_prefix_priority 2734{ 2735 PREFIX_PRIORITY_B_OPT, 2736 PREFIX_PRIORITY_LAST 2737}; 2738 2739/* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending 2740 order according to PRIORITY. Within each PRIORITY, new entries are 2741 appended. 2742 2743 If WARN is nonzero, we will warn if no file is found 2744 through this prefix. WARN should point to an int 2745 which will be set to 1 if this entry is used. 2746 2747 COMPONENT is the value to be passed to update_path. 2748 2749 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without 2750 the complete value of machine_suffix. 2751 2 means try both machine_suffix and just_machine_suffix. */ 2752 2753static void 2754add_prefix (struct path_prefix *pprefix, const char *prefix, 2755 const char *component, /* enum prefix_priority */ int priority, 2756 int require_machine_suffix, int os_multilib) 2757{ 2758 struct prefix_list *pl, **prev; 2759 int len; 2760 2761 for (prev = &pprefix->plist; 2762 (*prev) != NULL && (*prev)->priority <= priority; 2763 prev = &(*prev)->next) 2764 ; 2765 2766 /* Keep track of the longest prefix. */ 2767 2768 prefix = update_path (prefix, component); 2769 len = strlen (prefix); 2770 if (len > pprefix->max_len) 2771 pprefix->max_len = len; 2772 2773 pl = XNEW (struct prefix_list); 2774 pl->prefix = prefix; 2775 pl->require_machine_suffix = require_machine_suffix; 2776 pl->priority = priority; 2777 pl->os_multilib = os_multilib; 2778 2779 /* Insert after PREV. */ 2780 pl->next = (*prev); 2781 (*prev) = pl; 2782} 2783 2784/* Same as add_prefix, but prepending target_system_root to prefix. */ 2785static void 2786add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix, 2787 const char *component, 2788 /* enum prefix_priority */ int priority, 2789 int require_machine_suffix, int os_multilib) 2790{ 2791 if (!IS_ABSOLUTE_PATH (prefix)) 2792 fatal ("system path '%s' is not absolute", prefix); 2793 2794 if (target_system_root) 2795 { 2796 if (target_sysroot_suffix) 2797 prefix = concat (target_sysroot_suffix, prefix, NULL); 2798 prefix = concat (target_system_root, prefix, NULL); 2799 2800 /* We have to override this because GCC's notion of sysroot 2801 moves along with GCC. */ 2802 component = "GCC"; 2803 } 2804 2805 add_prefix (pprefix, prefix, component, priority, 2806 require_machine_suffix, os_multilib); 2807} 2808 2809/* Execute the command specified by the arguments on the current line of spec. 2810 When using pipes, this includes several piped-together commands 2811 with `|' between them. 2812 2813 Return 0 if successful, -1 if failed. */ 2814 2815static int 2816execute (void) 2817{ 2818 int i; 2819 int n_commands; /* # of command. */ 2820 char *string; 2821 struct pex_obj *pex; 2822 struct command 2823 { 2824 const char *prog; /* program name. */ 2825 const char **argv; /* vector of args. */ 2826 }; 2827 2828 struct command *commands; /* each command buffer with above info. */ 2829 2830 gcc_assert (!processing_spec_function); 2831 2832 /* Count # of piped commands. */ 2833 for (n_commands = 1, i = 0; i < argbuf_index; i++) 2834 if (strcmp (argbuf[i], "|") == 0) 2835 n_commands++; 2836 2837 /* Get storage for each command. */ 2838 commands = alloca (n_commands * sizeof (struct command)); 2839 2840 /* Split argbuf into its separate piped processes, 2841 and record info about each one. 2842 Also search for the programs that are to be run. */ 2843 2844 commands[0].prog = argbuf[0]; /* first command. */ 2845 commands[0].argv = &argbuf[0]; 2846 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false); 2847 2848 if (string) 2849 commands[0].argv[0] = string; 2850 2851 for (n_commands = 1, i = 0; i < argbuf_index; i++) 2852 if (strcmp (argbuf[i], "|") == 0) 2853 { /* each command. */ 2854#if defined (__MSDOS__) || defined (OS2) || defined (VMS) 2855 fatal ("-pipe not supported"); 2856#endif 2857 argbuf[i] = 0; /* termination of command args. */ 2858 commands[n_commands].prog = argbuf[i + 1]; 2859 commands[n_commands].argv = &argbuf[i + 1]; 2860 string = find_a_file (&exec_prefixes, commands[n_commands].prog, 2861 X_OK, false); 2862 if (string) 2863 commands[n_commands].argv[0] = string; 2864 n_commands++; 2865 } 2866 2867 argbuf[argbuf_index] = 0; 2868 2869 /* If -v, print what we are about to do, and maybe query. */ 2870 2871 if (verbose_flag) 2872 { 2873 /* For help listings, put a blank line between sub-processes. */ 2874 if (print_help_list) 2875 fputc ('\n', stderr); 2876 2877 /* Print each piped command as a separate line. */ 2878 for (i = 0; i < n_commands; i++) 2879 { 2880 const char *const *j; 2881 2882 if (verbose_only_flag) 2883 { 2884 for (j = commands[i].argv; *j; j++) 2885 { 2886 const char *p; 2887 fprintf (stderr, " \""); 2888 for (p = *j; *p; ++p) 2889 { 2890 if (*p == '"' || *p == '\\' || *p == '$') 2891 fputc ('\\', stderr); 2892 fputc (*p, stderr); 2893 } 2894 fputc ('"', stderr); 2895 } 2896 } 2897 else 2898 for (j = commands[i].argv; *j; j++) 2899 fprintf (stderr, " %s", *j); 2900 2901 /* Print a pipe symbol after all but the last command. */ 2902 if (i + 1 != n_commands) 2903 fprintf (stderr, " |"); 2904 fprintf (stderr, "\n"); 2905 } 2906 fflush (stderr); 2907 if (verbose_only_flag != 0) 2908 { 2909 /* verbose_only_flag should act as if the spec was 2910 executed, so increment execution_count before 2911 returning. This prevents spurious warnings about 2912 unused linker input files, etc. */ 2913 execution_count++; 2914 return 0; 2915 } 2916#ifdef DEBUG 2917 notice ("\nGo ahead? (y or n) "); 2918 fflush (stderr); 2919 i = getchar (); 2920 if (i != '\n') 2921 while (getchar () != '\n') 2922 ; 2923 2924 if (i != 'y' && i != 'Y') 2925 return 0; 2926#endif /* DEBUG */ 2927 } 2928 2929#ifdef ENABLE_VALGRIND_CHECKING 2930 /* Run the each command through valgrind. To simplify prepending the 2931 path to valgrind and the option "-q" (for quiet operation unless 2932 something triggers), we allocate a separate argv array. */ 2933 2934 for (i = 0; i < n_commands; i++) 2935 { 2936 const char **argv; 2937 int argc; 2938 int j; 2939 2940 for (argc = 0; commands[i].argv[argc] != NULL; argc++) 2941 ; 2942 2943 argv = alloca ((argc + 3) * sizeof (char *)); 2944 2945 argv[0] = VALGRIND_PATH; 2946 argv[1] = "-q"; 2947 for (j = 2; j < argc + 2; j++) 2948 argv[j] = commands[i].argv[j - 2]; 2949 argv[j] = NULL; 2950 2951 commands[i].argv = argv; 2952 commands[i].prog = argv[0]; 2953 } 2954#endif 2955 2956 /* Run each piped subprocess. */ 2957 2958 pex = pex_init (PEX_USE_PIPES | (report_times ? PEX_RECORD_TIMES : 0), 2959 programname, temp_filename); 2960 if (pex == NULL) 2961 pfatal_with_name (_("pex_init failed")); 2962 2963 for (i = 0; i < n_commands; i++) 2964 { 2965 const char *errmsg; 2966 int err; 2967 const char *string = commands[i].argv[0]; 2968 2969 errmsg = pex_run (pex, 2970 ((i + 1 == n_commands ? PEX_LAST : 0) 2971 | (string == commands[i].prog ? PEX_SEARCH : 0)), 2972 string, (char * const *) commands[i].argv, 2973 NULL, NULL, &err); 2974 if (errmsg != NULL) 2975 { 2976 if (err == 0) 2977 fatal (errmsg); 2978 else 2979 { 2980 errno = err; 2981 pfatal_with_name (errmsg); 2982 } 2983 } 2984 2985 if (string != commands[i].prog) 2986 free ((void *) string); 2987 } 2988 2989 execution_count++; 2990 2991 /* Wait for all the subprocesses to finish. */ 2992 2993 { 2994 int *statuses; 2995 struct pex_time *times = NULL; 2996 int ret_code = 0; 2997 2998 statuses = alloca (n_commands * sizeof (int)); 2999 if (!pex_get_status (pex, n_commands, statuses)) 3000 pfatal_with_name (_("failed to get exit status")); 3001 3002 if (report_times) 3003 { 3004 times = alloca (n_commands * sizeof (struct pex_time)); 3005 if (!pex_get_times (pex, n_commands, times)) 3006 pfatal_with_name (_("failed to get process times")); 3007 } 3008 3009 pex_free (pex); 3010 3011 for (i = 0; i < n_commands; ++i) 3012 { 3013 int status = statuses[i]; 3014 3015 if (WIFSIGNALED (status)) 3016 { 3017#ifdef SIGPIPE 3018 /* SIGPIPE is a special case. It happens in -pipe mode 3019 when the compiler dies before the preprocessor is done, 3020 or the assembler dies before the compiler is done. 3021 There's generally been an error already, and this is 3022 just fallout. So don't generate another error unless 3023 we would otherwise have succeeded. */ 3024 if (WTERMSIG (status) == SIGPIPE 3025 && (signal_count || greatest_status >= MIN_FATAL_STATUS)) 3026 { 3027 signal_count++; 3028 ret_code = -1; 3029 } 3030 else 3031#endif 3032 fatal_ice ("\ 3033Internal error: %s (program %s)\n\ 3034Please submit a full bug report.\n\ 3035See %s for instructions.", 3036 strsignal (WTERMSIG (status)), commands[i].prog, 3037 bug_report_url); 3038 } 3039 else if (WIFEXITED (status) 3040 && WEXITSTATUS (status) >= MIN_FATAL_STATUS) 3041 { 3042 if (WEXITSTATUS (status) > greatest_status) 3043 greatest_status = WEXITSTATUS (status); 3044 ret_code = -1; 3045 } 3046 3047 if (report_times) 3048 { 3049 struct pex_time *pt = ×[i]; 3050 double ut, st; 3051 3052 ut = ((double) pt->user_seconds 3053 + (double) pt->user_microseconds / 1.0e6); 3054 st = ((double) pt->system_seconds 3055 + (double) pt->system_microseconds / 1.0e6); 3056 3057 if (ut + st != 0) 3058 notice ("# %s %.2f %.2f\n", commands[i].prog, ut, st); 3059 } 3060 } 3061 3062 return ret_code; 3063 } 3064} 3065 3066/* Find all the switches given to us 3067 and make a vector describing them. 3068 The elements of the vector are strings, one per switch given. 3069 If a switch uses following arguments, then the `part1' field 3070 is the switch itself and the `args' field 3071 is a null-terminated vector containing the following arguments. 3072 The `live_cond' field is: 3073 0 when initialized 3074 1 if the switch is true in a conditional spec, 3075 -1 if false (overridden by a later switch) 3076 -2 if this switch should be ignored (used in %<S) 3077 The `validated' field is nonzero if any spec has looked at this switch; 3078 if it remains zero at the end of the run, it must be meaningless. */ 3079 3080#define SWITCH_OK 0 3081#define SWITCH_FALSE -1 3082#define SWITCH_IGNORE -2 3083#define SWITCH_LIVE 1 3084 3085struct switchstr 3086{ 3087 const char *part1; 3088 const char **args; 3089 int live_cond; 3090 unsigned char validated; 3091 unsigned char ordering; 3092}; 3093 3094static struct switchstr *switches; 3095 3096static int n_switches; 3097 3098/* Language is one of three things: 3099 3100 1) The name of a real programming language. 3101 2) NULL, indicating that no one has figured out 3102 what it is yet. 3103 3) '*', indicating that the file should be passed 3104 to the linker. */ 3105struct infile 3106{ 3107 const char *name; 3108 const char *language; 3109 struct compiler *incompiler; 3110 bool compiled; 3111 bool preprocessed; 3112}; 3113 3114/* Also a vector of input files specified. */ 3115 3116static struct infile *infiles; 3117 3118int n_infiles; 3119 3120/* True if multiple input files are being compiled to a single 3121 assembly file. */ 3122 3123static bool combine_inputs; 3124 3125/* This counts the number of libraries added by lang_specific_driver, so that 3126 we can tell if there were any user supplied any files or libraries. */ 3127 3128static int added_libraries; 3129 3130/* And a vector of corresponding output files is made up later. */ 3131 3132const char **outfiles; 3133 3134#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3135 3136/* Convert NAME to a new name if it is the standard suffix. DO_EXE 3137 is true if we should look for an executable suffix. DO_OBJ 3138 is true if we should look for an object suffix. */ 3139 3140static const char * 3141convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED, 3142 int do_obj ATTRIBUTE_UNUSED) 3143{ 3144#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3145 int i; 3146#endif 3147 int len; 3148 3149 if (name == NULL) 3150 return NULL; 3151 3152 len = strlen (name); 3153 3154#ifdef HAVE_TARGET_OBJECT_SUFFIX 3155 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */ 3156 if (do_obj && len > 2 3157 && name[len - 2] == '.' 3158 && name[len - 1] == 'o') 3159 { 3160 obstack_grow (&obstack, name, len - 2); 3161 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); 3162 name = XOBFINISH (&obstack, const char *); 3163 } 3164#endif 3165 3166#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3167 /* If there is no filetype, make it the executable suffix (which includes 3168 the "."). But don't get confused if we have just "-o". */ 3169 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-')) 3170 return name; 3171 3172 for (i = len - 1; i >= 0; i--) 3173 if (IS_DIR_SEPARATOR (name[i])) 3174 break; 3175 3176 for (i++; i < len; i++) 3177 if (name[i] == '.') 3178 return name; 3179 3180 obstack_grow (&obstack, name, len); 3181 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX, 3182 strlen (TARGET_EXECUTABLE_SUFFIX)); 3183 name = XOBFINISH (&obstack, const char *); 3184#endif 3185 3186 return name; 3187} 3188#endif 3189 3190/* Display the command line switches accepted by gcc. */ 3191static void 3192display_help (void) 3193{ 3194 printf (_("Usage: %s [options] file...\n"), programname); 3195 fputs (_("Options:\n"), stdout); 3196 3197 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout); 3198 fputs (_(" --help Display this information\n"), stdout); 3199 fputs (_(" --target-help Display target specific command line options\n"), stdout); 3200 if (! verbose_flag) 3201 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout); 3202 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout); 3203 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout); 3204 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout); 3205 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout); 3206 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout); 3207 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout); 3208 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout); 3209 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout); 3210 fputs (_("\ 3211 -print-multi-lib Display the mapping between command line options and\n\ 3212 multiple library search directories\n"), stdout); 3213 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout); 3214 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout); 3215 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout); 3216 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout); 3217 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout); 3218 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout); 3219 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout); 3220 fputs (_(" -combine Pass multiple source files to compiler at once\n"), stdout); 3221 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout); 3222 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout); 3223 fputs (_(" -time Time the execution of each subprocess\n"), stdout); 3224 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout); 3225 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout); 3226 fputs (_("\ 3227 --sysroot=<directory> Use <directory> as the root directory for headers\n\ 3228 and libraries\n"), stdout); 3229 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout); 3230 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout); 3231 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout); 3232 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout); 3233 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout); 3234 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout); 3235 fputs (_(" -S Compile only; do not assemble or link\n"), stdout); 3236 fputs (_(" -c Compile and assemble, but do not link\n"), stdout); 3237 fputs (_(" -o <file> Place the output into <file>\n"), stdout); 3238 fputs (_("\ 3239 -x <language> Specify the language of the following input files\n\ 3240 Permissible languages include: c c++ assembler none\n\ 3241 'none' means revert to the default behavior of\n\ 3242 guessing the language based on the file's extension\n\ 3243"), stdout); 3244 3245 printf (_("\ 3246\nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ 3247 passed on to the various sub-processes invoked by %s. In order to pass\n\ 3248 other options on to these processes the -W<letter> options must be used.\n\ 3249"), programname); 3250 3251 /* The rest of the options are displayed by invocations of the various 3252 sub-processes. */ 3253} 3254 3255static void 3256add_preprocessor_option (const char *option, int len) 3257{ 3258 n_preprocessor_options++; 3259 3260 if (! preprocessor_options) 3261 preprocessor_options = XNEWVEC (char *, n_preprocessor_options); 3262 else 3263 preprocessor_options = xrealloc (preprocessor_options, 3264 n_preprocessor_options * sizeof (char *)); 3265 3266 preprocessor_options [n_preprocessor_options - 1] = 3267 save_string (option, len); 3268} 3269 3270static void 3271add_assembler_option (const char *option, int len) 3272{ 3273 n_assembler_options++; 3274 3275 if (! assembler_options) 3276 assembler_options = XNEWVEC (char *, n_assembler_options); 3277 else 3278 assembler_options = xrealloc (assembler_options, 3279 n_assembler_options * sizeof (char *)); 3280 3281 assembler_options [n_assembler_options - 1] = save_string (option, len); 3282} 3283 3284static void 3285add_linker_option (const char *option, int len) 3286{ 3287 n_linker_options++; 3288 3289 if (! linker_options) 3290 linker_options = XNEWVEC (char *, n_linker_options); 3291 else 3292 linker_options = xrealloc (linker_options, 3293 n_linker_options * sizeof (char *)); 3294 3295 linker_options [n_linker_options - 1] = save_string (option, len); 3296} 3297 3298/* Create the vector `switches' and its contents. 3299 Store its length in `n_switches'. */ 3300 3301static void 3302process_command (int argc, const char **argv) 3303{ 3304 int i; 3305 const char *temp; 3306 char *temp1; 3307 const char *spec_lang = 0; 3308 int last_language_n_infiles; 3309 int lang_n_infiles = 0; 3310#ifdef MODIFY_TARGET_NAME 3311 int is_modify_target_name; 3312 unsigned int j; 3313#endif 3314 3315 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX"); 3316 3317 n_switches = 0; 3318 n_infiles = 0; 3319 added_libraries = 0; 3320 3321 /* Figure compiler version from version string. */ 3322 3323 compiler_version = temp1 = xstrdup (version_string); 3324 3325 for (; *temp1; ++temp1) 3326 { 3327 if (*temp1 == ' ') 3328 { 3329 *temp1 = '\0'; 3330 break; 3331 } 3332 } 3333 3334 /* If there is a -V or -b option (or both), process it now, before 3335 trying to interpret the rest of the command line. 3336 Use heuristic that all configuration names must have at least 3337 one dash '-'. This allows us to pass options starting with -b. */ 3338 if (argc > 1 && argv[1][0] == '-' 3339 && (argv[1][1] == 'V' || 3340 ((argv[1][1] == 'b') && (NULL != strchr(argv[1] + 2,'-'))))) 3341 { 3342 const char *new_version = DEFAULT_TARGET_VERSION; 3343 const char *new_machine = DEFAULT_TARGET_MACHINE; 3344 const char *progname = argv[0]; 3345 char **new_argv; 3346 char *new_argv0; 3347 int baselen; 3348 3349 while (argc > 1 && argv[1][0] == '-' 3350 && (argv[1][1] == 'V' || 3351 ((argv[1][1] == 'b') && ( NULL != strchr(argv[1] + 2,'-'))))) 3352 { 3353 char opt = argv[1][1]; 3354 const char *arg; 3355 if (argv[1][2] != '\0') 3356 { 3357 arg = argv[1] + 2; 3358 argc -= 1; 3359 argv += 1; 3360 } 3361 else if (argc > 2) 3362 { 3363 arg = argv[2]; 3364 argc -= 2; 3365 argv += 2; 3366 } 3367 else 3368 fatal ("'-%c' option must have argument", opt); 3369 if (opt == 'V') 3370 new_version = arg; 3371 else 3372 new_machine = arg; 3373 } 3374 3375 for (baselen = strlen (progname); baselen > 0; baselen--) 3376 if (IS_DIR_SEPARATOR (progname[baselen-1])) 3377 break; 3378 new_argv0 = xmemdup (progname, baselen, 3379 baselen + concat_length (new_version, new_machine, 3380 "-gcc-", NULL) + 1); 3381 strcpy (new_argv0 + baselen, new_machine); 3382 strcat (new_argv0, "-gcc-"); 3383 strcat (new_argv0, new_version); 3384 3385 new_argv = xmemdup (argv, (argc + 1) * sizeof (argv[0]), 3386 (argc + 1) * sizeof (argv[0])); 3387 new_argv[0] = new_argv0; 3388 3389 execvp (new_argv0, new_argv); 3390 fatal ("couldn't run '%s': %s", new_argv0, xstrerror (errno)); 3391 } 3392 3393 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX, 3394 see if we can create it from the pathname specified in argv[0]. */ 3395 3396 gcc_libexec_prefix = standard_libexec_prefix; 3397#ifndef FREEBSD_NATIVE 3398#ifndef VMS 3399 /* FIXME: make_relative_prefix doesn't yet work for VMS. */ 3400 if (!gcc_exec_prefix) 3401 { 3402 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix, 3403 standard_exec_prefix); 3404 gcc_libexec_prefix = make_relative_prefix (argv[0], 3405 standard_bindir_prefix, 3406 standard_libexec_prefix); 3407 if (gcc_exec_prefix) 3408 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL)); 3409 } 3410 else 3411 { 3412 /* make_relative_prefix requires a program name, but 3413 GCC_EXEC_PREFIX is typically a directory name with a trailing 3414 / (which is ignored by make_relative_prefix), so append a 3415 program name. */ 3416 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL); 3417 gcc_libexec_prefix = make_relative_prefix (tmp_prefix, 3418 standard_exec_prefix, 3419 standard_libexec_prefix); 3420 free (tmp_prefix); 3421 } 3422#else 3423#endif 3424#endif /* not FREEBSD_NATIVE */ 3425 3426 if (gcc_exec_prefix) 3427 { 3428 int len = strlen (gcc_exec_prefix); 3429 3430 if (len > (int) sizeof ("/lib/gcc/") - 1 3431 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1]))) 3432 { 3433 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1; 3434 if (IS_DIR_SEPARATOR (*temp) 3435 && strncmp (temp + 1, "lib", 3) == 0 3436 && IS_DIR_SEPARATOR (temp[4]) 3437 && strncmp (temp + 5, "gcc", 3) == 0) 3438 len -= sizeof ("/lib/gcc/") - 1; 3439 } 3440 3441 set_std_prefix (gcc_exec_prefix, len); 3442 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC", 3443 PREFIX_PRIORITY_LAST, 0, 0); 3444 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC", 3445 PREFIX_PRIORITY_LAST, 0, 0); 3446 } 3447 3448 /* COMPILER_PATH and LIBRARY_PATH have values 3449 that are lists of directory names with colons. */ 3450 3451 GET_ENVIRONMENT (temp, "COMPILER_PATH"); 3452 if (temp) 3453 { 3454 const char *startp, *endp; 3455 char *nstore = alloca (strlen (temp) + 3); 3456 3457 startp = endp = temp; 3458 while (1) 3459 { 3460 if (*endp == PATH_SEPARATOR || *endp == 0) 3461 { 3462 strncpy (nstore, startp, endp - startp); 3463 if (endp == startp) 3464 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3465 else if (!IS_DIR_SEPARATOR (endp[-1])) 3466 { 3467 nstore[endp - startp] = DIR_SEPARATOR; 3468 nstore[endp - startp + 1] = 0; 3469 } 3470 else 3471 nstore[endp - startp] = 0; 3472 add_prefix (&exec_prefixes, nstore, 0, 3473 PREFIX_PRIORITY_LAST, 0, 0); 3474 add_prefix (&include_prefixes, nstore, 0, 3475 PREFIX_PRIORITY_LAST, 0, 0); 3476 if (*endp == 0) 3477 break; 3478 endp = startp = endp + 1; 3479 } 3480 else 3481 endp++; 3482 } 3483 } 3484 3485 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV); 3486 if (temp && *cross_compile == '0') 3487 { 3488 const char *startp, *endp; 3489 char *nstore = alloca (strlen (temp) + 3); 3490 3491 startp = endp = temp; 3492 while (1) 3493 { 3494 if (*endp == PATH_SEPARATOR || *endp == 0) 3495 { 3496 strncpy (nstore, startp, endp - startp); 3497 if (endp == startp) 3498 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3499 else if (!IS_DIR_SEPARATOR (endp[-1])) 3500 { 3501 nstore[endp - startp] = DIR_SEPARATOR; 3502 nstore[endp - startp + 1] = 0; 3503 } 3504 else 3505 nstore[endp - startp] = 0; 3506 add_prefix (&startfile_prefixes, nstore, NULL, 3507 PREFIX_PRIORITY_LAST, 0, 1); 3508 if (*endp == 0) 3509 break; 3510 endp = startp = endp + 1; 3511 } 3512 else 3513 endp++; 3514 } 3515 } 3516 3517 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ 3518 GET_ENVIRONMENT (temp, "LPATH"); 3519 if (temp && *cross_compile == '0') 3520 { 3521 const char *startp, *endp; 3522 char *nstore = alloca (strlen (temp) + 3); 3523 3524 startp = endp = temp; 3525 while (1) 3526 { 3527 if (*endp == PATH_SEPARATOR || *endp == 0) 3528 { 3529 strncpy (nstore, startp, endp - startp); 3530 if (endp == startp) 3531 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3532 else if (!IS_DIR_SEPARATOR (endp[-1])) 3533 { 3534 nstore[endp - startp] = DIR_SEPARATOR; 3535 nstore[endp - startp + 1] = 0; 3536 } 3537 else 3538 nstore[endp - startp] = 0; 3539 add_prefix (&startfile_prefixes, nstore, NULL, 3540 PREFIX_PRIORITY_LAST, 0, 1); 3541 if (*endp == 0) 3542 break; 3543 endp = startp = endp + 1; 3544 } 3545 else 3546 endp++; 3547 } 3548 } 3549 3550 /* Options specified as if they appeared on the command line. */ 3551 temp = getenv ("GCC_OPTIONS"); 3552 if ((temp) && (strlen (temp) > 0)) 3553 { 3554 int len; 3555 int optc = 1; 3556 int new_argc; 3557 const char **new_argv; 3558 char *envopts; 3559 3560 while (isspace (*temp)) 3561 temp++; 3562 len = strlen (temp); 3563 envopts = (char *) xmalloc (len + 1); 3564 strcpy (envopts, temp); 3565 3566 for (i = 0; i < (len - 1); i++) 3567 if ((isspace (envopts[i])) && ! (isspace (envopts[i+1]))) 3568 optc++; 3569 3570 new_argv = (const char **) alloca ((optc + argc) * sizeof(char *)); 3571 3572 for (i = 0, new_argc = 1; new_argc <= optc; new_argc++) 3573 { 3574 while (isspace (envopts[i])) 3575 i++; 3576 new_argv[new_argc] = envopts + i; 3577 while (!isspace (envopts[i]) && (envopts[i] != '\0')) 3578 i++; 3579 envopts[i++] = '\0'; 3580 } 3581 for (i = 1; i < argc; i++) 3582 new_argv[new_argc++] = argv[i]; 3583 3584 argv = new_argv; 3585 argc = new_argc; 3586 } 3587 3588 /* Convert new-style -- options to old-style. */ 3589 translate_options (&argc, (const char *const **) &argv); 3590 3591 /* Do language-specific adjustment/addition of flags. */ 3592 lang_specific_driver (&argc, (const char *const **) &argv, &added_libraries); 3593 3594 /* Scan argv twice. Here, the first time, just count how many switches 3595 there will be in their vector, and how many input files in theirs. 3596 Here we also parse the switches that cc itself uses (e.g. -v). */ 3597 3598 for (i = 1; i < argc; i++) 3599 { 3600 if (! strcmp (argv[i], "-dumpspecs")) 3601 { 3602 struct spec_list *sl; 3603 init_spec (); 3604 for (sl = specs; sl; sl = sl->next) 3605 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec)); 3606 if (link_command_spec) 3607 printf ("*link_command:\n%s\n\n", link_command_spec); 3608 exit (0); 3609 } 3610 else if (! strcmp (argv[i], "-dumpversion")) 3611 { 3612 printf ("%s\n", spec_version); 3613 exit (0); 3614 } 3615 else if (! strcmp (argv[i], "-dumpmachine")) 3616 { 3617 printf ("%s\n", spec_machine); 3618 exit (0); 3619 } 3620 else if (strcmp (argv[i], "-fversion") == 0) 3621 { 3622 /* translate_options () has turned --version into -fversion. */ 3623 printf (_("%s (GCC) %s\n"), programname, version_string); 3624 printf ("Copyright %s 2007 Free Software Foundation, Inc.\n", 3625 _("(C)")); 3626 fputs (_("This is free software; see the source for copying conditions. There is NO\n\ 3627warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"), 3628 stdout); 3629 exit (0); 3630 } 3631 else if (strcmp (argv[i], "-fhelp") == 0) 3632 { 3633 /* translate_options () has turned --help into -fhelp. */ 3634 print_help_list = 1; 3635 3636 /* We will be passing a dummy file on to the sub-processes. */ 3637 n_infiles++; 3638 n_switches++; 3639 3640 /* CPP driver cannot obtain switch from cc1_options. */ 3641 if (is_cpp_driver) 3642 add_preprocessor_option ("--help", 6); 3643 add_assembler_option ("--help", 6); 3644 add_linker_option ("--help", 6); 3645 } 3646 else if (strcmp (argv[i], "-ftarget-help") == 0) 3647 { 3648 /* translate_options() has turned --target-help into -ftarget-help. */ 3649 target_help_flag = 1; 3650 3651 /* We will be passing a dummy file on to the sub-processes. */ 3652 n_infiles++; 3653 n_switches++; 3654 3655 /* CPP driver cannot obtain switch from cc1_options. */ 3656 if (is_cpp_driver) 3657 add_preprocessor_option ("--target-help", 13); 3658 add_assembler_option ("--target-help", 13); 3659 add_linker_option ("--target-help", 13); 3660 } 3661 else if (! strcmp (argv[i], "-pass-exit-codes")) 3662 { 3663 pass_exit_codes = 1; 3664 n_switches++; 3665 } 3666 else if (! strcmp (argv[i], "-print-search-dirs")) 3667 print_search_dirs = 1; 3668 else if (! strcmp (argv[i], "-print-libgcc-file-name")) 3669 print_file_name = "libgcc.a"; 3670 else if (! strncmp (argv[i], "-print-file-name=", 17)) 3671 print_file_name = argv[i] + 17; 3672 else if (! strncmp (argv[i], "-print-prog-name=", 17)) 3673 print_prog_name = argv[i] + 17; 3674 else if (! strcmp (argv[i], "-print-multi-lib")) 3675 print_multi_lib = 1; 3676 else if (! strcmp (argv[i], "-print-multi-directory")) 3677 print_multi_directory = 1; 3678 else if (! strcmp (argv[i], "-print-multi-os-directory")) 3679 print_multi_os_directory = 1; 3680 else if (! strncmp (argv[i], "-Wa,", 4)) 3681 { 3682 int prev, j; 3683 /* Pass the rest of this option to the assembler. */ 3684 3685 /* Split the argument at commas. */ 3686 prev = 4; 3687 for (j = 4; argv[i][j]; j++) 3688 if (argv[i][j] == ',') 3689 { 3690 add_assembler_option (argv[i] + prev, j - prev); 3691 prev = j + 1; 3692 } 3693 3694 /* Record the part after the last comma. */ 3695 add_assembler_option (argv[i] + prev, j - prev); 3696 } 3697 else if (! strncmp (argv[i], "-Wp,", 4)) 3698 { 3699 int prev, j; 3700 /* Pass the rest of this option to the preprocessor. */ 3701 3702 /* Split the argument at commas. */ 3703 prev = 4; 3704 for (j = 4; argv[i][j]; j++) 3705 if (argv[i][j] == ',') 3706 { 3707 add_preprocessor_option (argv[i] + prev, j - prev); 3708 prev = j + 1; 3709 } 3710 3711 /* Record the part after the last comma. */ 3712 add_preprocessor_option (argv[i] + prev, j - prev); 3713 } 3714 else if (argv[i][0] == '+' && argv[i][1] == 'e') 3715 /* The +e options to the C++ front-end. */ 3716 n_switches++; 3717 else if (strncmp (argv[i], "-Wl,", 4) == 0) 3718 { 3719 int j; 3720 /* Split the argument at commas. */ 3721 for (j = 3; argv[i][j]; j++) 3722 n_infiles += (argv[i][j] == ','); 3723 } 3724 else if (strcmp (argv[i], "-Xlinker") == 0) 3725 { 3726 if (i + 1 == argc) 3727 fatal ("argument to '-Xlinker' is missing"); 3728 3729 n_infiles++; 3730 i++; 3731 } 3732 else if (strcmp (argv[i], "-Xpreprocessor") == 0) 3733 { 3734 if (i + 1 == argc) 3735 fatal ("argument to '-Xpreprocessor' is missing"); 3736 3737 add_preprocessor_option (argv[i+1], strlen (argv[i+1])); 3738 } 3739 else if (strcmp (argv[i], "-Xassembler") == 0) 3740 { 3741 if (i + 1 == argc) 3742 fatal ("argument to '-Xassembler' is missing"); 3743 3744 add_assembler_option (argv[i+1], strlen (argv[i+1])); 3745 } 3746 else if (strcmp (argv[i], "-l") == 0) 3747 { 3748 if (i + 1 == argc) 3749 fatal ("argument to '-l' is missing"); 3750 3751 n_infiles++; 3752 i++; 3753 } 3754 else if (strncmp (argv[i], "-l", 2) == 0) 3755 n_infiles++; 3756 else if (strcmp (argv[i], "-save-temps") == 0) 3757 { 3758 save_temps_flag = 1; 3759 n_switches++; 3760 } 3761 else if (strcmp (argv[i], "-combine") == 0) 3762 { 3763 combine_flag = 1; 3764 n_switches++; 3765 } 3766 else if (strcmp (argv[i], "-specs") == 0) 3767 { 3768 struct user_specs *user = XNEW (struct user_specs); 3769 if (++i >= argc) 3770 fatal ("argument to '-specs' is missing"); 3771 3772 user->next = (struct user_specs *) 0; 3773 user->filename = argv[i]; 3774 if (user_specs_tail) 3775 user_specs_tail->next = user; 3776 else 3777 user_specs_head = user; 3778 user_specs_tail = user; 3779 } 3780 else if (strncmp (argv[i], "-specs=", 7) == 0) 3781 { 3782 struct user_specs *user = XNEW (struct user_specs); 3783 if (strlen (argv[i]) == 7) 3784 fatal ("argument to '-specs=' is missing"); 3785 3786 user->next = (struct user_specs *) 0; 3787 user->filename = argv[i] + 7; 3788 if (user_specs_tail) 3789 user_specs_tail->next = user; 3790 else 3791 user_specs_head = user; 3792 user_specs_tail = user; 3793 } 3794 else if (strcmp (argv[i], "-time") == 0) 3795 report_times = 1; 3796 else if (strcmp (argv[i], "-pipe") == 0) 3797 { 3798 /* -pipe has to go into the switches array as well as 3799 setting a flag. */ 3800 use_pipes = 1; 3801 n_switches++; 3802 } 3803 else if (strcmp (argv[i], "-###") == 0) 3804 { 3805 /* This is similar to -v except that there is no execution 3806 of the commands and the echoed arguments are quoted. It 3807 is intended for use in shell scripts to capture the 3808 driver-generated command line. */ 3809 verbose_only_flag++; 3810 verbose_flag++; 3811 } 3812 else if (argv[i][0] == '-' && argv[i][1] != 0) 3813 { 3814 const char *p = &argv[i][1]; 3815 int c = *p; 3816 3817 switch (c) 3818 { 3819 case 'b': 3820 if (NULL == strchr(argv[i] + 2, '-')) 3821 goto normal_switch; 3822 3823 /* Fall through. */ 3824 case 'V': 3825 fatal ("'-%c' must come at the start of the command line", c); 3826 break; 3827 3828 case 'B': 3829 { 3830 const char *value; 3831 int len; 3832 3833 if (p[1] == 0 && i + 1 == argc) 3834 fatal ("argument to '-B' is missing"); 3835 if (p[1] == 0) 3836 value = argv[++i]; 3837 else 3838 value = p + 1; 3839 3840 len = strlen (value); 3841 3842 /* Catch the case where the user has forgotten to append a 3843 directory separator to the path. Note, they may be using 3844 -B to add an executable name prefix, eg "i386-elf-", in 3845 order to distinguish between multiple installations of 3846 GCC in the same directory. Hence we must check to see 3847 if appending a directory separator actually makes a 3848 valid directory name. */ 3849 if (! IS_DIR_SEPARATOR (value [len - 1]) 3850 && is_directory (value, false)) 3851 { 3852 char *tmp = XNEWVEC (char, len + 2); 3853 strcpy (tmp, value); 3854 tmp[len] = DIR_SEPARATOR; 3855 tmp[++ len] = 0; 3856 value = tmp; 3857 } 3858 3859 /* As a kludge, if the arg is "[foo/]stageN/", just 3860 add "[foo/]include" to the include prefix. */ 3861 if ((len == 7 3862 || (len > 7 3863 && (IS_DIR_SEPARATOR (value[len - 8])))) 3864 && strncmp (value + len - 7, "stage", 5) == 0 3865 && ISDIGIT (value[len - 2]) 3866 && (IS_DIR_SEPARATOR (value[len - 1]))) 3867 { 3868 if (len == 7) 3869 add_prefix (&include_prefixes, "./", NULL, 3870 PREFIX_PRIORITY_B_OPT, 0, 0); 3871 else 3872 { 3873 char *string = xmalloc (len - 6); 3874 memcpy (string, value, len - 7); 3875 string[len - 7] = 0; 3876 add_prefix (&include_prefixes, string, NULL, 3877 PREFIX_PRIORITY_B_OPT, 0, 0); 3878 } 3879 } 3880 3881 add_prefix (&exec_prefixes, value, NULL, 3882 PREFIX_PRIORITY_B_OPT, 0, 0); 3883 add_prefix (&startfile_prefixes, value, NULL, 3884 PREFIX_PRIORITY_B_OPT, 0, 0); 3885 add_prefix (&include_prefixes, value, NULL, 3886 PREFIX_PRIORITY_B_OPT, 0, 0); 3887 n_switches++; 3888 } 3889 break; 3890 3891 case 'v': /* Print our subcommands and print versions. */ 3892 n_switches++; 3893 /* If they do anything other than exactly `-v', don't set 3894 verbose_flag; rather, continue on to give the error. */ 3895 if (p[1] != 0) 3896 break; 3897 verbose_flag++; 3898 break; 3899 3900 case 'S': 3901 case 'c': 3902 if (p[1] == 0) 3903 { 3904 have_c = 1; 3905 n_switches++; 3906 break; 3907 } 3908 goto normal_switch; 3909 3910 case 'o': 3911 have_o = 1; 3912#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3913 if (! have_c) 3914 { 3915 int skip; 3916 3917 /* Forward scan, just in case -S or -c is specified 3918 after -o. */ 3919 int j = i + 1; 3920 if (p[1] == 0) 3921 ++j; 3922 while (j < argc) 3923 { 3924 if (argv[j][0] == '-') 3925 { 3926 if (SWITCH_CURTAILS_COMPILATION (argv[j][1]) 3927 && argv[j][2] == 0) 3928 { 3929 have_c = 1; 3930 break; 3931 } 3932 else if ((skip = SWITCH_TAKES_ARG (argv[j][1]))) 3933 j += skip - (argv[j][2] != 0); 3934 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1))) 3935 j += skip; 3936 } 3937 j++; 3938 } 3939 } 3940#endif 3941#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX) 3942 if (p[1] == 0) 3943 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0); 3944 else 3945 argv[i] = convert_filename (argv[i], ! have_c, 0); 3946#endif 3947 goto normal_switch; 3948 3949 default: 3950 normal_switch: 3951 3952#ifdef MODIFY_TARGET_NAME 3953 is_modify_target_name = 0; 3954 3955 for (j = 0; j < ARRAY_SIZE (modify_target); j++) 3956 if (! strcmp (argv[i], modify_target[j].sw)) 3957 { 3958 char *new_name = xmalloc (strlen (modify_target[j].str) 3959 + strlen (spec_machine)); 3960 const char *p, *r; 3961 char *q; 3962 int made_addition = 0; 3963 3964 is_modify_target_name = 1; 3965 for (p = spec_machine, q = new_name; *p != 0; ) 3966 { 3967 if (modify_target[j].add_del == DELETE 3968 && (! strncmp (q, modify_target[j].str, 3969 strlen (modify_target[j].str)))) 3970 p += strlen (modify_target[j].str); 3971 else if (modify_target[j].add_del == ADD 3972 && ! made_addition && *p == '-') 3973 { 3974 for (r = modify_target[j].str; *r != 0; ) 3975 *q++ = *r++; 3976 made_addition = 1; 3977 } 3978 3979 *q++ = *p++; 3980 } 3981 3982 spec_machine = new_name; 3983 } 3984 3985 if (is_modify_target_name) 3986 break; 3987#endif 3988 3989 n_switches++; 3990 3991 if (SWITCH_TAKES_ARG (c) > (p[1] != 0)) 3992 i += SWITCH_TAKES_ARG (c) - (p[1] != 0); 3993 else if (WORD_SWITCH_TAKES_ARG (p)) 3994 i += WORD_SWITCH_TAKES_ARG (p); 3995 } 3996 } 3997 else 3998 { 3999 n_infiles++; 4000 lang_n_infiles++; 4001 } 4002 } 4003 4004 if (save_temps_flag && use_pipes) 4005 { 4006 /* -save-temps overrides -pipe, so that temp files are produced */ 4007 if (save_temps_flag) 4008 error ("warning: -pipe ignored because -save-temps specified"); 4009 use_pipes = 0; 4010 } 4011 4012 /* Set up the search paths before we go looking for config files. */ 4013#ifdef FREEBSD_NATIVE 4014 add_prefix (&exec_prefixes, PREFIX"/bin/", "BINUTILS", 4015 PREFIX_PRIORITY_LAST, 0, 0); 4016#endif /* FREEBSD_NATIVE */ 4017 4018 /* These come before the md prefixes so that we will find gcc's subcommands 4019 (such as cpp) rather than those of the host system. */ 4020 /* Use 2 as fourth arg meaning try just the machine as a suffix, 4021 as well as trying the machine and the version. */ 4022#ifndef OS2 4023 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC", 4024 PREFIX_PRIORITY_LAST, 1, 0); 4025 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS", 4026 PREFIX_PRIORITY_LAST, 2, 0); 4027#ifndef FREEBSD_NATIVE 4028 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS", 4029 PREFIX_PRIORITY_LAST, 2, 0); 4030 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS", 4031 PREFIX_PRIORITY_LAST, 2, 0); 4032 add_prefix (&exec_prefixes, standard_exec_prefix_2, "BINUTILS", 4033 PREFIX_PRIORITY_LAST, 2, 0); 4034#endif 4035#endif 4036 4037#ifndef FREEBSD_NATIVE 4038 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS", 4039 PREFIX_PRIORITY_LAST, 1, 0); 4040 add_prefix (&startfile_prefixes, standard_exec_prefix_2, "BINUTILS", 4041 PREFIX_PRIORITY_LAST, 1, 0); 4042 4043 tooldir_prefix = concat (tooldir_base_prefix, spec_machine, 4044 dir_separator_str, NULL); 4045 4046 /* If tooldir is relative, base it on exec_prefixes. A relative 4047 tooldir lets us move the installed tree as a unit. 4048 4049 If GCC_EXEC_PREFIX is defined, then we want to add two relative 4050 directories, so that we can search both the user specified directory 4051 and the standard place. */ 4052 4053 if (!IS_ABSOLUTE_PATH (tooldir_prefix)) 4054 { 4055 if (gcc_exec_prefix) 4056 { 4057 char *gcc_exec_tooldir_prefix 4058 = concat (gcc_exec_prefix, spec_machine, dir_separator_str, 4059 spec_version, dir_separator_str, tooldir_prefix, NULL); 4060 4061 add_prefix (&exec_prefixes, 4062 concat (gcc_exec_tooldir_prefix, "bin", 4063 dir_separator_str, NULL), 4064 NULL, PREFIX_PRIORITY_LAST, 0, 0); 4065 add_prefix (&startfile_prefixes, 4066 concat (gcc_exec_tooldir_prefix, "lib", 4067 dir_separator_str, NULL), 4068 NULL, PREFIX_PRIORITY_LAST, 0, 1); 4069 } 4070 4071 tooldir_prefix = concat (standard_exec_prefix, spec_machine, 4072 dir_separator_str, spec_version, 4073 dir_separator_str, tooldir_prefix, NULL); 4074 } 4075 4076 add_prefix (&exec_prefixes, 4077 concat (tooldir_prefix, "bin", dir_separator_str, NULL), 4078 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0); 4079 add_prefix (&startfile_prefixes, 4080 concat (tooldir_prefix, "lib", dir_separator_str, NULL), 4081 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1); 4082 4083#if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS) 4084 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix, 4085 then consider it to relocate with the rest of the GCC installation 4086 if GCC_EXEC_PREFIX is set. 4087 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */ 4088 if (target_system_root && gcc_exec_prefix) 4089 { 4090 char *tmp_prefix = make_relative_prefix (argv[0], 4091 standard_bindir_prefix, 4092 target_system_root); 4093 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0) 4094 { 4095 target_system_root = tmp_prefix; 4096 target_system_root_changed = 1; 4097 } 4098 } 4099#endif 4100#endif /* FREEBSD_NATIVE */ 4101 4102 /* More prefixes are enabled in main, after we read the specs file 4103 and determine whether this is cross-compilation or not. */ 4104 4105 /* Then create the space for the vectors and scan again. */ 4106 4107 switches = XNEWVEC (struct switchstr, n_switches + 1); 4108 infiles = XNEWVEC (struct infile, n_infiles + 1); 4109 n_switches = 0; 4110 n_infiles = 0; 4111 last_language_n_infiles = -1; 4112 4113 /* This, time, copy the text of each switch and store a pointer 4114 to the copy in the vector of switches. 4115 Store all the infiles in their vector. */ 4116 4117 for (i = 1; i < argc; i++) 4118 { 4119 /* Just skip the switches that were handled by the preceding loop. */ 4120#ifdef MODIFY_TARGET_NAME 4121 is_modify_target_name = 0; 4122 4123 for (j = 0; j < ARRAY_SIZE (modify_target); j++) 4124 if (! strcmp (argv[i], modify_target[j].sw)) 4125 is_modify_target_name = 1; 4126 4127 if (is_modify_target_name) 4128 ; 4129 else 4130#endif 4131 if (! strncmp (argv[i], "-Wa,", 4)) 4132 ; 4133 else if (! strncmp (argv[i], "-Wp,", 4)) 4134 ; 4135 else if (! strcmp (argv[i], "-pass-exit-codes")) 4136 ; 4137 else if (! strcmp (argv[i], "-print-search-dirs")) 4138 ; 4139 else if (! strcmp (argv[i], "-print-libgcc-file-name")) 4140 ; 4141 else if (! strncmp (argv[i], "-print-file-name=", 17)) 4142 ; 4143 else if (! strncmp (argv[i], "-print-prog-name=", 17)) 4144 ; 4145 else if (! strcmp (argv[i], "-print-multi-lib")) 4146 ; 4147 else if (! strcmp (argv[i], "-print-multi-directory")) 4148 ; 4149 else if (! strcmp (argv[i], "-print-multi-os-directory")) 4150 ; 4151 else if (! strcmp (argv[i], "-ftarget-help")) 4152 ; 4153 else if (! strcmp (argv[i], "-fhelp")) 4154 ; 4155 else if (! strncmp (argv[i], "--sysroot=", strlen ("--sysroot="))) 4156 { 4157 target_system_root = argv[i] + strlen ("--sysroot="); 4158 target_system_root_changed = 1; 4159 } 4160 else if (argv[i][0] == '+' && argv[i][1] == 'e') 4161 { 4162 /* Compensate for the +e options to the C++ front-end; 4163 they're there simply for cfront call-compatibility. We do 4164 some magic in default_compilers to pass them down properly. 4165 Note we deliberately start at the `+' here, to avoid passing 4166 -e0 or -e1 down into the linker. */ 4167 switches[n_switches].part1 = &argv[i][0]; 4168 switches[n_switches].args = 0; 4169 switches[n_switches].live_cond = SWITCH_OK; 4170 switches[n_switches].validated = 0; 4171 n_switches++; 4172 } 4173 else if (strncmp (argv[i], "-Wl,", 4) == 0) 4174 { 4175 int prev, j; 4176 /* Split the argument at commas. */ 4177 prev = 4; 4178 for (j = 4; argv[i][j]; j++) 4179 if (argv[i][j] == ',') 4180 { 4181 infiles[n_infiles].language = "*"; 4182 infiles[n_infiles++].name 4183 = save_string (argv[i] + prev, j - prev); 4184 prev = j + 1; 4185 } 4186 /* Record the part after the last comma. */ 4187 infiles[n_infiles].language = "*"; 4188 infiles[n_infiles++].name = argv[i] + prev; 4189 } 4190 else if (strcmp (argv[i], "-Xlinker") == 0) 4191 { 4192 infiles[n_infiles].language = "*"; 4193 infiles[n_infiles++].name = argv[++i]; 4194 } 4195 /* Xassembler and Xpreprocessor were already handled in the first argv 4196 scan, so all we need to do here is ignore them and their argument. */ 4197 else if (strcmp (argv[i], "-Xassembler") == 0) 4198 i++; 4199 else if (strcmp (argv[i], "-Xpreprocessor") == 0) 4200 i++; 4201 else if (strcmp (argv[i], "-l") == 0) 4202 { /* POSIX allows separation of -l and the lib arg; 4203 canonicalize by concatenating -l with its arg */ 4204 infiles[n_infiles].language = "*"; 4205 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL); 4206 } 4207 else if (strncmp (argv[i], "-l", 2) == 0) 4208 { 4209 infiles[n_infiles].language = "*"; 4210 infiles[n_infiles++].name = argv[i]; 4211 } 4212 else if (strcmp (argv[i], "-specs") == 0) 4213 i++; 4214 else if (strncmp (argv[i], "-specs=", 7) == 0) 4215 ; 4216 else if (strcmp (argv[i], "-time") == 0) 4217 ; 4218 else if (strcmp (argv[i], "-###") == 0) 4219 ; 4220 else if (argv[i][0] == '-' && argv[i][1] != 0) 4221 { 4222 const char *p = &argv[i][1]; 4223 int c = *p; 4224 4225 if (c == 'x') 4226 { 4227 if (p[1] == 0 && i + 1 == argc) 4228 fatal ("argument to '-x' is missing"); 4229 if (p[1] == 0) 4230 spec_lang = argv[++i]; 4231 else 4232 spec_lang = p + 1; 4233 if (! strcmp (spec_lang, "none")) 4234 /* Suppress the warning if -xnone comes after the last input 4235 file, because alternate command interfaces like g++ might 4236 find it useful to place -xnone after each input file. */ 4237 spec_lang = 0; 4238 else 4239 last_language_n_infiles = n_infiles; 4240 continue; 4241 } 4242 switches[n_switches].part1 = p; 4243 /* Deal with option arguments in separate argv elements. */ 4244 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0)) 4245 || WORD_SWITCH_TAKES_ARG (p)) 4246 { 4247 int j = 0; 4248 int n_args = WORD_SWITCH_TAKES_ARG (p); 4249 4250 if (n_args == 0) 4251 { 4252 /* Count only the option arguments in separate argv elements. */ 4253 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0); 4254 } 4255 if (i + n_args >= argc) 4256 fatal ("argument to '-%s' is missing", p); 4257 switches[n_switches].args 4258 = XNEWVEC (const char *, n_args + 1); 4259 while (j < n_args) 4260 switches[n_switches].args[j++] = argv[++i]; 4261 /* Null-terminate the vector. */ 4262 switches[n_switches].args[j] = 0; 4263 } 4264 else if (strchr (switches_need_spaces, c)) 4265 { 4266 /* On some systems, ld cannot handle some options without 4267 a space. So split the option from its argument. */ 4268 char *part1 = XNEWVEC (char, 2); 4269 part1[0] = c; 4270 part1[1] = '\0'; 4271 4272 switches[n_switches].part1 = part1; 4273 switches[n_switches].args = XNEWVEC (const char *, 2); 4274 switches[n_switches].args[0] = xstrdup (p+1); 4275 switches[n_switches].args[1] = 0; 4276 } 4277 else 4278 switches[n_switches].args = 0; 4279 4280 switches[n_switches].live_cond = SWITCH_OK; 4281 switches[n_switches].validated = 0; 4282 switches[n_switches].ordering = 0; 4283 /* These are always valid, since gcc.c itself understands them. */ 4284 if (!strcmp (p, "save-temps") 4285 || !strcmp (p, "static-libgcc") 4286 || !strcmp (p, "shared-libgcc") 4287 || !strcmp (p, "pipe")) 4288 switches[n_switches].validated = 1; 4289 else 4290 { 4291 char ch = switches[n_switches].part1[0]; 4292 if (ch == 'B') 4293 switches[n_switches].validated = 1; 4294 } 4295 n_switches++; 4296 } 4297 else 4298 { 4299#ifdef HAVE_TARGET_OBJECT_SUFFIX 4300 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK)); 4301#endif 4302 4303 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0) 4304 { 4305 perror_with_name (argv[i]); 4306 error_count++; 4307 } 4308 else 4309 { 4310 infiles[n_infiles].language = spec_lang; 4311 infiles[n_infiles++].name = argv[i]; 4312 } 4313 } 4314 } 4315 4316 if (n_infiles == last_language_n_infiles && spec_lang != 0) 4317 error ("warning: '-x %s' after last input file has no effect", spec_lang); 4318 4319 /* Ensure we only invoke each subprocess once. */ 4320 if (target_help_flag || print_help_list) 4321 { 4322 n_infiles = 1; 4323 4324 /* Create a dummy input file, so that we can pass --target-help on to 4325 the various sub-processes. */ 4326 infiles[0].language = "c"; 4327 infiles[0].name = "help-dummy"; 4328 4329 if (target_help_flag) 4330 { 4331 switches[n_switches].part1 = "--target-help"; 4332 switches[n_switches].args = 0; 4333 switches[n_switches].live_cond = SWITCH_OK; 4334 switches[n_switches].validated = 0; 4335 4336 n_switches++; 4337 } 4338 4339 if (print_help_list) 4340 { 4341 switches[n_switches].part1 = "--help"; 4342 switches[n_switches].args = 0; 4343 switches[n_switches].live_cond = SWITCH_OK; 4344 switches[n_switches].validated = 0; 4345 4346 n_switches++; 4347 } 4348 } 4349 4350 switches[n_switches].part1 = 0; 4351 infiles[n_infiles].name = 0; 4352} 4353 4354/* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS 4355 and place that in the environment. */ 4356 4357static void 4358set_collect_gcc_options (void) 4359{ 4360 int i; 4361 int first_time; 4362 4363 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to 4364 the compiler. */ 4365 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=", 4366 sizeof ("COLLECT_GCC_OPTIONS=") - 1); 4367 4368 first_time = TRUE; 4369 for (i = 0; (int) i < n_switches; i++) 4370 { 4371 const char *const *args; 4372 const char *p, *q; 4373 if (!first_time) 4374 obstack_grow (&collect_obstack, " ", 1); 4375 4376 first_time = FALSE; 4377 4378 /* Ignore elided switches. */ 4379 if (switches[i].live_cond == SWITCH_IGNORE) 4380 continue; 4381 4382 obstack_grow (&collect_obstack, "'-", 2); 4383 q = switches[i].part1; 4384 while ((p = strchr (q, '\''))) 4385 { 4386 obstack_grow (&collect_obstack, q, p - q); 4387 obstack_grow (&collect_obstack, "'\\''", 4); 4388 q = ++p; 4389 } 4390 obstack_grow (&collect_obstack, q, strlen (q)); 4391 obstack_grow (&collect_obstack, "'", 1); 4392 4393 for (args = switches[i].args; args && *args; args++) 4394 { 4395 obstack_grow (&collect_obstack, " '", 2); 4396 q = *args; 4397 while ((p = strchr (q, '\''))) 4398 { 4399 obstack_grow (&collect_obstack, q, p - q); 4400 obstack_grow (&collect_obstack, "'\\''", 4); 4401 q = ++p; 4402 } 4403 obstack_grow (&collect_obstack, q, strlen (q)); 4404 obstack_grow (&collect_obstack, "'", 1); 4405 } 4406 } 4407 obstack_grow (&collect_obstack, "\0", 1); 4408 putenv (XOBFINISH (&collect_obstack, char *)); 4409} 4410 4411/* Process a spec string, accumulating and running commands. */ 4412 4413/* These variables describe the input file name. 4414 input_file_number is the index on outfiles of this file, 4415 so that the output file name can be stored for later use by %o. 4416 input_basename is the start of the part of the input file 4417 sans all directory names, and basename_length is the number 4418 of characters starting there excluding the suffix .c or whatever. */ 4419 4420static const char *input_filename; 4421static int input_file_number; 4422size_t input_filename_length; 4423static int basename_length; 4424static int suffixed_basename_length; 4425static const char *input_basename; 4426static const char *input_suffix; 4427#ifndef HOST_LACKS_INODE_NUMBERS 4428static struct stat input_stat; 4429#endif 4430static int input_stat_set; 4431 4432/* The compiler used to process the current input file. */ 4433static struct compiler *input_file_compiler; 4434 4435/* These are variables used within do_spec and do_spec_1. */ 4436 4437/* Nonzero if an arg has been started and not yet terminated 4438 (with space, tab or newline). */ 4439static int arg_going; 4440 4441/* Nonzero means %d or %g has been seen; the next arg to be terminated 4442 is a temporary file name. */ 4443static int delete_this_arg; 4444 4445/* Nonzero means %w has been seen; the next arg to be terminated 4446 is the output file name of this compilation. */ 4447static int this_is_output_file; 4448 4449/* Nonzero means %s has been seen; the next arg to be terminated 4450 is the name of a library file and we should try the standard 4451 search dirs for it. */ 4452static int this_is_library_file; 4453 4454/* Nonzero means that the input of this command is coming from a pipe. */ 4455static int input_from_pipe; 4456 4457/* Nonnull means substitute this for any suffix when outputting a switches 4458 arguments. */ 4459static const char *suffix_subst; 4460 4461/* Process the spec SPEC and run the commands specified therein. 4462 Returns 0 if the spec is successfully processed; -1 if failed. */ 4463 4464int 4465do_spec (const char *spec) 4466{ 4467 int value; 4468 4469 value = do_spec_2 (spec); 4470 4471 /* Force out any unfinished command. 4472 If -pipe, this forces out the last command if it ended in `|'. */ 4473 if (value == 0) 4474 { 4475 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|")) 4476 argbuf_index--; 4477 4478 set_collect_gcc_options (); 4479 4480 if (argbuf_index > 0) 4481 value = execute (); 4482 } 4483 4484 return value; 4485} 4486 4487static int 4488do_spec_2 (const char *spec) 4489{ 4490 const char *string; 4491 int result; 4492 4493 clear_args (); 4494 arg_going = 0; 4495 delete_this_arg = 0; 4496 this_is_output_file = 0; 4497 this_is_library_file = 0; 4498 input_from_pipe = 0; 4499 suffix_subst = NULL; 4500 4501 result = do_spec_1 (spec, 0, NULL); 4502 4503 /* End any pending argument. */ 4504 if (arg_going) 4505 { 4506 obstack_1grow (&obstack, 0); 4507 string = XOBFINISH (&obstack, const char *); 4508 if (this_is_library_file) 4509 string = find_file (string); 4510 store_arg (string, delete_this_arg, this_is_output_file); 4511 if (this_is_output_file) 4512 outfiles[input_file_number] = string; 4513 arg_going = 0; 4514 } 4515 4516 return result; 4517} 4518 4519 4520/* Process the given spec string and add any new options to the end 4521 of the switches/n_switches array. */ 4522 4523static void 4524do_option_spec (const char *name, const char *spec) 4525{ 4526 unsigned int i, value_count, value_len; 4527 const char *p, *q, *value; 4528 char *tmp_spec, *tmp_spec_p; 4529 4530 if (configure_default_options[0].name == NULL) 4531 return; 4532 4533 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++) 4534 if (strcmp (configure_default_options[i].name, name) == 0) 4535 break; 4536 if (i == ARRAY_SIZE (configure_default_options)) 4537 return; 4538 4539 value = configure_default_options[i].value; 4540 value_len = strlen (value); 4541 4542 /* Compute the size of the final spec. */ 4543 value_count = 0; 4544 p = spec; 4545 while ((p = strstr (p, "%(VALUE)")) != NULL) 4546 { 4547 p ++; 4548 value_count ++; 4549 } 4550 4551 /* Replace each %(VALUE) by the specified value. */ 4552 tmp_spec = alloca (strlen (spec) + 1 4553 + value_count * (value_len - strlen ("%(VALUE)"))); 4554 tmp_spec_p = tmp_spec; 4555 q = spec; 4556 while ((p = strstr (q, "%(VALUE)")) != NULL) 4557 { 4558 memcpy (tmp_spec_p, q, p - q); 4559 tmp_spec_p = tmp_spec_p + (p - q); 4560 memcpy (tmp_spec_p, value, value_len); 4561 tmp_spec_p += value_len; 4562 q = p + strlen ("%(VALUE)"); 4563 } 4564 strcpy (tmp_spec_p, q); 4565 4566 do_self_spec (tmp_spec); 4567} 4568 4569/* Process the given spec string and add any new options to the end 4570 of the switches/n_switches array. */ 4571 4572static void 4573do_self_spec (const char *spec) 4574{ 4575 do_spec_2 (spec); 4576 do_spec_1 (" ", 0, NULL); 4577 4578 if (argbuf_index > 0) 4579 { 4580 int i, first; 4581 4582 first = n_switches; 4583 n_switches += argbuf_index; 4584 switches = xrealloc (switches, 4585 sizeof (struct switchstr) * (n_switches + 1)); 4586 4587 switches[n_switches] = switches[first]; 4588 for (i = 0; i < argbuf_index; i++) 4589 { 4590 struct switchstr *sw; 4591 4592 /* Each switch should start with '-'. */ 4593 if (argbuf[i][0] != '-') 4594 fatal ("switch '%s' does not start with '-'", argbuf[i]); 4595 4596 sw = &switches[i + first]; 4597 sw->part1 = &argbuf[i][1]; 4598 sw->args = 0; 4599 sw->live_cond = SWITCH_OK; 4600 sw->validated = 0; 4601 sw->ordering = 0; 4602 } 4603 } 4604} 4605 4606/* Callback for processing %D and %I specs. */ 4607 4608struct spec_path_info { 4609 const char *option; 4610 const char *append; 4611 size_t append_len; 4612 bool omit_relative; 4613 bool separate_options; 4614}; 4615 4616static void * 4617spec_path (char *path, void *data) 4618{ 4619 struct spec_path_info *info = data; 4620 size_t len = 0; 4621 char save = 0; 4622 4623 if (info->omit_relative && !IS_ABSOLUTE_PATH (path)) 4624 return NULL; 4625 4626 if (info->append_len != 0) 4627 { 4628 len = strlen (path); 4629 memcpy (path + len, info->append, info->append_len + 1); 4630 } 4631 4632 if (!is_directory (path, true)) 4633 return NULL; 4634 4635 do_spec_1 (info->option, 1, NULL); 4636 if (info->separate_options) 4637 do_spec_1 (" ", 0, NULL); 4638 4639 if (info->append_len == 0) 4640 { 4641 len = strlen (path); 4642 save = path[len - 1]; 4643 if (IS_DIR_SEPARATOR (path[len - 1])) 4644 path[len - 1] = '\0'; 4645 } 4646 4647 do_spec_1 (path, 1, NULL); 4648 do_spec_1 (" ", 0, NULL); 4649 4650 /* Must not damage the original path. */ 4651 if (info->append_len == 0) 4652 path[len - 1] = save; 4653 4654 return NULL; 4655} 4656 4657/* Process the sub-spec SPEC as a portion of a larger spec. 4658 This is like processing a whole spec except that we do 4659 not initialize at the beginning and we do not supply a 4660 newline by default at the end. 4661 INSWITCH nonzero means don't process %-sequences in SPEC; 4662 in this case, % is treated as an ordinary character. 4663 This is used while substituting switches. 4664 INSWITCH nonzero also causes SPC not to terminate an argument. 4665 4666 Value is zero unless a line was finished 4667 and the command on that line reported an error. */ 4668 4669static int 4670do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part) 4671{ 4672 const char *p = spec; 4673 int c; 4674 int i; 4675 const char *string; 4676 int value; 4677 4678 while ((c = *p++)) 4679 /* If substituting a switch, treat all chars like letters. 4680 Otherwise, NL, SPC, TAB and % are special. */ 4681 switch (inswitch ? 'a' : c) 4682 { 4683 case '\n': 4684 /* End of line: finish any pending argument, 4685 then run the pending command if one has been started. */ 4686 if (arg_going) 4687 { 4688 obstack_1grow (&obstack, 0); 4689 string = XOBFINISH (&obstack, const char *); 4690 if (this_is_library_file) 4691 string = find_file (string); 4692 store_arg (string, delete_this_arg, this_is_output_file); 4693 if (this_is_output_file) 4694 outfiles[input_file_number] = string; 4695 } 4696 arg_going = 0; 4697 4698 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|")) 4699 { 4700 /* A `|' before the newline means use a pipe here, 4701 but only if -pipe was specified. 4702 Otherwise, execute now and don't pass the `|' as an arg. */ 4703 if (use_pipes) 4704 { 4705 input_from_pipe = 1; 4706 break; 4707 } 4708 else 4709 argbuf_index--; 4710 } 4711 4712 set_collect_gcc_options (); 4713 4714 if (argbuf_index > 0) 4715 { 4716 value = execute (); 4717 if (value) 4718 return value; 4719 } 4720 /* Reinitialize for a new command, and for a new argument. */ 4721 clear_args (); 4722 arg_going = 0; 4723 delete_this_arg = 0; 4724 this_is_output_file = 0; 4725 this_is_library_file = 0; 4726 input_from_pipe = 0; 4727 break; 4728 4729 case '|': 4730 /* End any pending argument. */ 4731 if (arg_going) 4732 { 4733 obstack_1grow (&obstack, 0); 4734 string = XOBFINISH (&obstack, const char *); 4735 if (this_is_library_file) 4736 string = find_file (string); 4737 store_arg (string, delete_this_arg, this_is_output_file); 4738 if (this_is_output_file) 4739 outfiles[input_file_number] = string; 4740 } 4741 4742 /* Use pipe */ 4743 obstack_1grow (&obstack, c); 4744 arg_going = 1; 4745 break; 4746 4747 case '\t': 4748 case ' ': 4749 /* Space or tab ends an argument if one is pending. */ 4750 if (arg_going) 4751 { 4752 obstack_1grow (&obstack, 0); 4753 string = XOBFINISH (&obstack, const char *); 4754 if (this_is_library_file) 4755 string = find_file (string); 4756 store_arg (string, delete_this_arg, this_is_output_file); 4757 if (this_is_output_file) 4758 outfiles[input_file_number] = string; 4759 } 4760 /* Reinitialize for a new argument. */ 4761 arg_going = 0; 4762 delete_this_arg = 0; 4763 this_is_output_file = 0; 4764 this_is_library_file = 0; 4765 break; 4766 4767 case '%': 4768 switch (c = *p++) 4769 { 4770 case 0: 4771 fatal ("spec '%s' invalid", spec); 4772 4773 case 'b': 4774 obstack_grow (&obstack, input_basename, basename_length); 4775 arg_going = 1; 4776 break; 4777 4778 case 'B': 4779 obstack_grow (&obstack, input_basename, suffixed_basename_length); 4780 arg_going = 1; 4781 break; 4782 4783 case 'd': 4784 delete_this_arg = 2; 4785 break; 4786 4787 /* Dump out the directories specified with LIBRARY_PATH, 4788 followed by the absolute directories 4789 that we search for startfiles. */ 4790 case 'D': 4791 { 4792 struct spec_path_info info; 4793 4794 info.option = "-L"; 4795 info.append_len = 0; 4796#ifdef RELATIVE_PREFIX_NOT_LINKDIR 4797 /* Used on systems which record the specified -L dirs 4798 and use them to search for dynamic linking. 4799 Relative directories always come from -B, 4800 and it is better not to use them for searching 4801 at run time. In particular, stage1 loses. */ 4802 info.omit_relative = true; 4803#else 4804 info.omit_relative = false; 4805#endif 4806 info.separate_options = false; 4807 4808 for_each_path (&startfile_prefixes, true, 0, spec_path, &info); 4809 } 4810 break; 4811 4812 case 'e': 4813 /* %efoo means report an error with `foo' as error message 4814 and don't execute any more commands for this file. */ 4815 { 4816 const char *q = p; 4817 char *buf; 4818 while (*p != 0 && *p != '\n') 4819 p++; 4820 buf = alloca (p - q + 1); 4821 strncpy (buf, q, p - q); 4822 buf[p - q] = 0; 4823 error ("%s", buf); 4824 return -1; 4825 } 4826 break; 4827 case 'n': 4828 /* %nfoo means report a notice with `foo' on stderr. */ 4829 { 4830 const char *q = p; 4831 char *buf; 4832 while (*p != 0 && *p != '\n') 4833 p++; 4834 buf = alloca (p - q + 1); 4835 strncpy (buf, q, p - q); 4836 buf[p - q] = 0; 4837 notice ("%s\n", buf); 4838 if (*p) 4839 p++; 4840 } 4841 break; 4842 4843 case 'j': 4844 { 4845 struct stat st; 4846 4847 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is 4848 defined, and it is not a directory, and it is 4849 writable, use it. Otherwise, treat this like any 4850 other temporary file. */ 4851 4852 if ((!save_temps_flag) 4853 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode)) 4854 && (access (HOST_BIT_BUCKET, W_OK) == 0)) 4855 { 4856 obstack_grow (&obstack, HOST_BIT_BUCKET, 4857 strlen (HOST_BIT_BUCKET)); 4858 delete_this_arg = 0; 4859 arg_going = 1; 4860 break; 4861 } 4862 } 4863 goto create_temp_file; 4864 case '|': 4865 if (use_pipes) 4866 { 4867 obstack_1grow (&obstack, '-'); 4868 delete_this_arg = 0; 4869 arg_going = 1; 4870 4871 /* consume suffix */ 4872 while (*p == '.' || ISALNUM ((unsigned char) *p)) 4873 p++; 4874 if (p[0] == '%' && p[1] == 'O') 4875 p += 2; 4876 4877 break; 4878 } 4879 goto create_temp_file; 4880 case 'm': 4881 if (use_pipes) 4882 { 4883 /* consume suffix */ 4884 while (*p == '.' || ISALNUM ((unsigned char) *p)) 4885 p++; 4886 if (p[0] == '%' && p[1] == 'O') 4887 p += 2; 4888 4889 break; 4890 } 4891 goto create_temp_file; 4892 case 'g': 4893 case 'u': 4894 case 'U': 4895 create_temp_file: 4896 { 4897 struct temp_name *t; 4898 int suffix_length; 4899 const char *suffix = p; 4900 char *saved_suffix = NULL; 4901 4902 while (*p == '.' || ISALNUM ((unsigned char) *p)) 4903 p++; 4904 suffix_length = p - suffix; 4905 if (p[0] == '%' && p[1] == 'O') 4906 { 4907 p += 2; 4908 /* We don't support extra suffix characters after %O. */ 4909 if (*p == '.' || ISALNUM ((unsigned char) *p)) 4910 fatal ("spec '%s' has invalid '%%0%c'", spec, *p); 4911 if (suffix_length == 0) 4912 suffix = TARGET_OBJECT_SUFFIX; 4913 else 4914 { 4915 saved_suffix 4916 = XNEWVEC (char, suffix_length 4917 + strlen (TARGET_OBJECT_SUFFIX)); 4918 strncpy (saved_suffix, suffix, suffix_length); 4919 strcpy (saved_suffix + suffix_length, 4920 TARGET_OBJECT_SUFFIX); 4921 } 4922 suffix_length += strlen (TARGET_OBJECT_SUFFIX); 4923 } 4924 4925 /* If the input_filename has the same suffix specified 4926 for the %g, %u, or %U, and -save-temps is specified, 4927 we could end up using that file as an intermediate 4928 thus clobbering the user's source file (.e.g., 4929 gcc -save-temps foo.s would clobber foo.s with the 4930 output of cpp0). So check for this condition and 4931 generate a temp file as the intermediate. */ 4932 4933 if (save_temps_flag) 4934 { 4935 temp_filename_length = basename_length + suffix_length; 4936 temp_filename = alloca (temp_filename_length + 1); 4937 strncpy ((char *) temp_filename, input_basename, basename_length); 4938 strncpy ((char *) temp_filename + basename_length, suffix, 4939 suffix_length); 4940 *((char *) temp_filename + temp_filename_length) = '\0'; 4941 if (strcmp (temp_filename, input_filename) != 0) 4942 { 4943#ifndef HOST_LACKS_INODE_NUMBERS 4944 struct stat st_temp; 4945 4946 /* Note, set_input() resets input_stat_set to 0. */ 4947 if (input_stat_set == 0) 4948 { 4949 input_stat_set = stat (input_filename, &input_stat); 4950 if (input_stat_set >= 0) 4951 input_stat_set = 1; 4952 } 4953 4954 /* If we have the stat for the input_filename 4955 and we can do the stat for the temp_filename 4956 then the they could still refer to the same 4957 file if st_dev/st_ino's are the same. */ 4958 if (input_stat_set != 1 4959 || stat (temp_filename, &st_temp) < 0 4960 || input_stat.st_dev != st_temp.st_dev 4961 || input_stat.st_ino != st_temp.st_ino) 4962#else 4963 /* Just compare canonical pathnames. */ 4964 char* input_realname = lrealpath (input_filename); 4965 char* temp_realname = lrealpath (temp_filename); 4966 bool files_differ = strcmp (input_realname, temp_realname); 4967 free (input_realname); 4968 free (temp_realname); 4969 if (files_differ) 4970#endif 4971 { 4972 temp_filename = save_string (temp_filename, 4973 temp_filename_length + 1); 4974 obstack_grow (&obstack, temp_filename, 4975 temp_filename_length); 4976 arg_going = 1; 4977 delete_this_arg = 0; 4978 break; 4979 } 4980 } 4981 } 4982 4983 /* See if we already have an association of %g/%u/%U and 4984 suffix. */ 4985 for (t = temp_names; t; t = t->next) 4986 if (t->length == suffix_length 4987 && strncmp (t->suffix, suffix, suffix_length) == 0 4988 && t->unique == (c == 'u' || c == 'U' || c == 'j')) 4989 break; 4990 4991 /* Make a new association if needed. %u and %j 4992 require one. */ 4993 if (t == 0 || c == 'u' || c == 'j') 4994 { 4995 if (t == 0) 4996 { 4997 t = xmalloc (sizeof (struct temp_name)); 4998 t->next = temp_names; 4999 temp_names = t; 5000 } 5001 t->length = suffix_length; 5002 if (saved_suffix) 5003 { 5004 t->suffix = saved_suffix; 5005 saved_suffix = NULL; 5006 } 5007 else 5008 t->suffix = save_string (suffix, suffix_length); 5009 t->unique = (c == 'u' || c == 'U' || c == 'j'); 5010 temp_filename = make_temp_file (t->suffix); 5011 temp_filename_length = strlen (temp_filename); 5012 t->filename = temp_filename; 5013 t->filename_length = temp_filename_length; 5014 } 5015 5016 if (saved_suffix) 5017 free (saved_suffix); 5018 5019 obstack_grow (&obstack, t->filename, t->filename_length); 5020 delete_this_arg = 1; 5021 } 5022 arg_going = 1; 5023 break; 5024 5025 case 'i': 5026 if (combine_inputs) 5027 { 5028 for (i = 0; (int) i < n_infiles; i++) 5029 if ((!infiles[i].language) || (infiles[i].language[0] != '*')) 5030 if (infiles[i].incompiler == input_file_compiler) 5031 { 5032 store_arg (infiles[i].name, 0, 0); 5033 infiles[i].compiled = true; 5034 } 5035 } 5036 else 5037 { 5038 obstack_grow (&obstack, input_filename, input_filename_length); 5039 arg_going = 1; 5040 } 5041 break; 5042 5043 case 'I': 5044 { 5045 struct spec_path_info info; 5046 5047 if (multilib_dir) 5048 { 5049 do_spec_1 ("-imultilib", 1, NULL); 5050 /* Make this a separate argument. */ 5051 do_spec_1 (" ", 0, NULL); 5052 do_spec_1 (multilib_dir, 1, NULL); 5053 do_spec_1 (" ", 0, NULL); 5054 } 5055 5056 if (gcc_exec_prefix) 5057 { 5058 do_spec_1 ("-iprefix", 1, NULL); 5059 /* Make this a separate argument. */ 5060 do_spec_1 (" ", 0, NULL); 5061 do_spec_1 (gcc_exec_prefix, 1, NULL); 5062 do_spec_1 (" ", 0, NULL); 5063 } 5064 5065 if (target_system_root_changed || 5066 (target_system_root && target_sysroot_hdrs_suffix)) 5067 { 5068 do_spec_1 ("-isysroot", 1, NULL); 5069 /* Make this a separate argument. */ 5070 do_spec_1 (" ", 0, NULL); 5071 do_spec_1 (target_system_root, 1, NULL); 5072 if (target_sysroot_hdrs_suffix) 5073 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL); 5074 do_spec_1 (" ", 0, NULL); 5075 } 5076 5077 info.option = "-isystem"; 5078 info.append = "include"; 5079 info.append_len = strlen (info.append); 5080 info.omit_relative = false; 5081 info.separate_options = true; 5082 5083 for_each_path (&include_prefixes, false, info.append_len, 5084 spec_path, &info); 5085 } 5086 break; 5087 5088 case 'o': 5089 { 5090 int max = n_infiles; 5091 max += lang_specific_extra_outfiles; 5092 5093 for (i = 0; i < max; i++) 5094 if (outfiles[i]) 5095 store_arg (outfiles[i], 0, 0); 5096 break; 5097 } 5098 5099 case 'O': 5100 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); 5101 arg_going = 1; 5102 break; 5103 5104 case 's': 5105 this_is_library_file = 1; 5106 break; 5107 5108 case 'V': 5109 outfiles[input_file_number] = NULL; 5110 break; 5111 5112 case 'w': 5113 this_is_output_file = 1; 5114 break; 5115 5116 case 'W': 5117 { 5118 int cur_index = argbuf_index; 5119 /* Handle the {...} following the %W. */ 5120 if (*p != '{') 5121 fatal ("spec '%s' has invalid '%%W%c", spec, *p); 5122 p = handle_braces (p + 1); 5123 if (p == 0) 5124 return -1; 5125 /* End any pending argument. */ 5126 if (arg_going) 5127 { 5128 obstack_1grow (&obstack, 0); 5129 string = XOBFINISH (&obstack, const char *); 5130 if (this_is_library_file) 5131 string = find_file (string); 5132 store_arg (string, delete_this_arg, this_is_output_file); 5133 if (this_is_output_file) 5134 outfiles[input_file_number] = string; 5135 arg_going = 0; 5136 } 5137 /* If any args were output, mark the last one for deletion 5138 on failure. */ 5139 if (argbuf_index != cur_index) 5140 record_temp_file (argbuf[argbuf_index - 1], 0, 1); 5141 break; 5142 } 5143 5144 /* %x{OPTION} records OPTION for %X to output. */ 5145 case 'x': 5146 { 5147 const char *p1 = p; 5148 char *string; 5149 5150 /* Skip past the option value and make a copy. */ 5151 if (*p != '{') 5152 fatal ("spec '%s' has invalid '%%x%c'", spec, *p); 5153 while (*p++ != '}') 5154 ; 5155 string = save_string (p1 + 1, p - p1 - 2); 5156 5157 /* See if we already recorded this option. */ 5158 for (i = 0; i < n_linker_options; i++) 5159 if (! strcmp (string, linker_options[i])) 5160 { 5161 free (string); 5162 return 0; 5163 } 5164 5165 /* This option is new; add it. */ 5166 add_linker_option (string, strlen (string)); 5167 } 5168 break; 5169 5170 /* Dump out the options accumulated previously using %x. */ 5171 case 'X': 5172 for (i = 0; i < n_linker_options; i++) 5173 { 5174 do_spec_1 (linker_options[i], 1, NULL); 5175 /* Make each accumulated option a separate argument. */ 5176 do_spec_1 (" ", 0, NULL); 5177 } 5178 break; 5179 5180 /* Dump out the options accumulated previously using -Wa,. */ 5181 case 'Y': 5182 for (i = 0; i < n_assembler_options; i++) 5183 { 5184 do_spec_1 (assembler_options[i], 1, NULL); 5185 /* Make each accumulated option a separate argument. */ 5186 do_spec_1 (" ", 0, NULL); 5187 } 5188 break; 5189 5190 /* Dump out the options accumulated previously using -Wp,. */ 5191 case 'Z': 5192 for (i = 0; i < n_preprocessor_options; i++) 5193 { 5194 do_spec_1 (preprocessor_options[i], 1, NULL); 5195 /* Make each accumulated option a separate argument. */ 5196 do_spec_1 (" ", 0, NULL); 5197 } 5198 break; 5199 5200 /* Here are digits and numbers that just process 5201 a certain constant string as a spec. */ 5202 5203 case '1': 5204 value = do_spec_1 (cc1_spec, 0, NULL); 5205 if (value != 0) 5206 return value; 5207 break; 5208 5209 case '2': 5210 value = do_spec_1 (cc1plus_spec, 0, NULL); 5211 if (value != 0) 5212 return value; 5213 break; 5214 5215 case 'a': 5216 value = do_spec_1 (asm_spec, 0, NULL); 5217 if (value != 0) 5218 return value; 5219 break; 5220 5221 case 'A': 5222 value = do_spec_1 (asm_final_spec, 0, NULL); 5223 if (value != 0) 5224 return value; 5225 break; 5226 5227 case 'C': 5228 { 5229 const char *const spec 5230 = (input_file_compiler->cpp_spec 5231 ? input_file_compiler->cpp_spec 5232 : cpp_spec); 5233 value = do_spec_1 (spec, 0, NULL); 5234 if (value != 0) 5235 return value; 5236 } 5237 break; 5238 5239 case 'E': 5240 value = do_spec_1 (endfile_spec, 0, NULL); 5241 if (value != 0) 5242 return value; 5243 break; 5244 5245 case 'l': 5246 value = do_spec_1 (link_spec, 0, NULL); 5247 if (value != 0) 5248 return value; 5249 break; 5250 5251 case 'L': 5252 value = do_spec_1 (lib_spec, 0, NULL); 5253 if (value != 0) 5254 return value; 5255 break; 5256 5257 case 'G': 5258 value = do_spec_1 (libgcc_spec, 0, NULL); 5259 if (value != 0) 5260 return value; 5261 break; 5262 5263 case 'R': 5264 /* We assume there is a directory 5265 separator at the end of this string. */ 5266 if (target_system_root) 5267 { 5268 obstack_grow (&obstack, target_system_root, 5269 strlen (target_system_root)); 5270 if (target_sysroot_suffix) 5271 obstack_grow (&obstack, target_sysroot_suffix, 5272 strlen (target_sysroot_suffix)); 5273 } 5274 break; 5275 5276 case 'S': 5277 value = do_spec_1 (startfile_spec, 0, NULL); 5278 if (value != 0) 5279 return value; 5280 break; 5281 5282 /* Here we define characters other than letters and digits. */ 5283 5284 case '{': 5285 p = handle_braces (p); 5286 if (p == 0) 5287 return -1; 5288 break; 5289 5290 case ':': 5291 p = handle_spec_function (p); 5292 if (p == 0) 5293 return -1; 5294 break; 5295 5296 case '%': 5297 obstack_1grow (&obstack, '%'); 5298 break; 5299 5300 case '.': 5301 { 5302 unsigned len = 0; 5303 5304 while (p[len] && p[len] != ' ' && p[len] != '%') 5305 len++; 5306 suffix_subst = save_string (p - 1, len + 1); 5307 p += len; 5308 } 5309 break; 5310 5311 /* Henceforth ignore the option(s) matching the pattern 5312 after the %<. */ 5313 case '<': 5314 { 5315 unsigned len = 0; 5316 int have_wildcard = 0; 5317 int i; 5318 5319 while (p[len] && p[len] != ' ' && p[len] != '\t') 5320 len++; 5321 5322 if (p[len-1] == '*') 5323 have_wildcard = 1; 5324 5325 for (i = 0; i < n_switches; i++) 5326 if (!strncmp (switches[i].part1, p, len - have_wildcard) 5327 && (have_wildcard || switches[i].part1[len] == '\0')) 5328 { 5329 switches[i].live_cond = SWITCH_IGNORE; 5330 switches[i].validated = 1; 5331 } 5332 5333 p += len; 5334 } 5335 break; 5336 5337 case '*': 5338 if (soft_matched_part) 5339 { 5340 do_spec_1 (soft_matched_part, 1, NULL); 5341 do_spec_1 (" ", 0, NULL); 5342 } 5343 else 5344 /* Catch the case where a spec string contains something like 5345 '%{foo:%*}'. i.e. there is no * in the pattern on the left 5346 hand side of the :. */ 5347 error ("spec failure: '%%*' has not been initialized by pattern match"); 5348 break; 5349 5350 /* Process a string found as the value of a spec given by name. 5351 This feature allows individual machine descriptions 5352 to add and use their own specs. 5353 %[...] modifies -D options the way %P does; 5354 %(...) uses the spec unmodified. */ 5355 case '[': 5356 error ("warning: use of obsolete %%[ operator in specs"); 5357 case '(': 5358 { 5359 const char *name = p; 5360 struct spec_list *sl; 5361 int len; 5362 5363 /* The string after the S/P is the name of a spec that is to be 5364 processed. */ 5365 while (*p && *p != ')' && *p != ']') 5366 p++; 5367 5368 /* See if it's in the list. */ 5369 for (len = p - name, sl = specs; sl; sl = sl->next) 5370 if (sl->name_len == len && !strncmp (sl->name, name, len)) 5371 { 5372 name = *(sl->ptr_spec); 5373#ifdef DEBUG_SPECS 5374 notice ("Processing spec %c%s%c, which is '%s'\n", 5375 c, sl->name, (c == '(') ? ')' : ']', name); 5376#endif 5377 break; 5378 } 5379 5380 if (sl) 5381 { 5382 if (c == '(') 5383 { 5384 value = do_spec_1 (name, 0, NULL); 5385 if (value != 0) 5386 return value; 5387 } 5388 else 5389 { 5390 char *x = alloca (strlen (name) * 2 + 1); 5391 char *buf = x; 5392 const char *y = name; 5393 int flag = 0; 5394 5395 /* Copy all of NAME into BUF, but put __ after 5396 every -D and at the end of each arg. */ 5397 while (1) 5398 { 5399 if (! strncmp (y, "-D", 2)) 5400 { 5401 *x++ = '-'; 5402 *x++ = 'D'; 5403 *x++ = '_'; 5404 *x++ = '_'; 5405 y += 2; 5406 flag = 1; 5407 continue; 5408 } 5409 else if (flag 5410 && (*y == ' ' || *y == '\t' || *y == '=' 5411 || *y == '}' || *y == 0)) 5412 { 5413 *x++ = '_'; 5414 *x++ = '_'; 5415 flag = 0; 5416 } 5417 if (*y == 0) 5418 break; 5419 else 5420 *x++ = *y++; 5421 } 5422 *x = 0; 5423 5424 value = do_spec_1 (buf, 0, NULL); 5425 if (value != 0) 5426 return value; 5427 } 5428 } 5429 5430 /* Discard the closing paren or bracket. */ 5431 if (*p) 5432 p++; 5433 } 5434 break; 5435 5436 default: 5437 error ("spec failure: unrecognized spec option '%c'", c); 5438 break; 5439 } 5440 break; 5441 5442 case '\\': 5443 /* Backslash: treat next character as ordinary. */ 5444 c = *p++; 5445 5446 /* Fall through. */ 5447 default: 5448 /* Ordinary character: put it into the current argument. */ 5449 obstack_1grow (&obstack, c); 5450 arg_going = 1; 5451 } 5452 5453 /* End of string. If we are processing a spec function, we need to 5454 end any pending argument. */ 5455 if (processing_spec_function && arg_going) 5456 { 5457 obstack_1grow (&obstack, 0); 5458 string = XOBFINISH (&obstack, const char *); 5459 if (this_is_library_file) 5460 string = find_file (string); 5461 store_arg (string, delete_this_arg, this_is_output_file); 5462 if (this_is_output_file) 5463 outfiles[input_file_number] = string; 5464 arg_going = 0; 5465 } 5466 5467 return 0; 5468} 5469 5470/* Look up a spec function. */ 5471 5472static const struct spec_function * 5473lookup_spec_function (const char *name) 5474{ 5475 const struct spec_function *sf; 5476 5477 for (sf = static_spec_functions; sf->name != NULL; sf++) 5478 if (strcmp (sf->name, name) == 0) 5479 return sf; 5480 5481 return NULL; 5482} 5483 5484/* Evaluate a spec function. */ 5485 5486static const char * 5487eval_spec_function (const char *func, const char *args) 5488{ 5489 const struct spec_function *sf; 5490 const char *funcval; 5491 5492 /* Saved spec processing context. */ 5493 int save_argbuf_index; 5494 int save_argbuf_length; 5495 const char **save_argbuf; 5496 5497 int save_arg_going; 5498 int save_delete_this_arg; 5499 int save_this_is_output_file; 5500 int save_this_is_library_file; 5501 int save_input_from_pipe; 5502 const char *save_suffix_subst; 5503 5504 5505 sf = lookup_spec_function (func); 5506 if (sf == NULL) 5507 fatal ("unknown spec function '%s'", func); 5508 5509 /* Push the spec processing context. */ 5510 save_argbuf_index = argbuf_index; 5511 save_argbuf_length = argbuf_length; 5512 save_argbuf = argbuf; 5513 5514 save_arg_going = arg_going; 5515 save_delete_this_arg = delete_this_arg; 5516 save_this_is_output_file = this_is_output_file; 5517 save_this_is_library_file = this_is_library_file; 5518 save_input_from_pipe = input_from_pipe; 5519 save_suffix_subst = suffix_subst; 5520 5521 /* Create a new spec processing context, and build the function 5522 arguments. */ 5523 5524 alloc_args (); 5525 if (do_spec_2 (args) < 0) 5526 fatal ("error in args to spec function '%s'", func); 5527 5528 /* argbuf_index is an index for the next argument to be inserted, and 5529 so contains the count of the args already inserted. */ 5530 5531 funcval = (*sf->func) (argbuf_index, argbuf); 5532 5533 /* Pop the spec processing context. */ 5534 argbuf_index = save_argbuf_index; 5535 argbuf_length = save_argbuf_length; 5536 free (argbuf); 5537 argbuf = save_argbuf; 5538 5539 arg_going = save_arg_going; 5540 delete_this_arg = save_delete_this_arg; 5541 this_is_output_file = save_this_is_output_file; 5542 this_is_library_file = save_this_is_library_file; 5543 input_from_pipe = save_input_from_pipe; 5544 suffix_subst = save_suffix_subst; 5545 5546 return funcval; 5547} 5548 5549/* Handle a spec function call of the form: 5550 5551 %:function(args) 5552 5553 ARGS is processed as a spec in a separate context and split into an 5554 argument vector in the normal fashion. The function returns a string 5555 containing a spec which we then process in the caller's context, or 5556 NULL if no processing is required. */ 5557 5558static const char * 5559handle_spec_function (const char *p) 5560{ 5561 char *func, *args; 5562 const char *endp, *funcval; 5563 int count; 5564 5565 processing_spec_function++; 5566 5567 /* Get the function name. */ 5568 for (endp = p; *endp != '\0'; endp++) 5569 { 5570 if (*endp == '(') /* ) */ 5571 break; 5572 /* Only allow [A-Za-z0-9], -, and _ in function names. */ 5573 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_')) 5574 fatal ("malformed spec function name"); 5575 } 5576 if (*endp != '(') /* ) */ 5577 fatal ("no arguments for spec function"); 5578 func = save_string (p, endp - p); 5579 p = ++endp; 5580 5581 /* Get the arguments. */ 5582 for (count = 0; *endp != '\0'; endp++) 5583 { 5584 /* ( */ 5585 if (*endp == ')') 5586 { 5587 if (count == 0) 5588 break; 5589 count--; 5590 } 5591 else if (*endp == '(') /* ) */ 5592 count++; 5593 } 5594 /* ( */ 5595 if (*endp != ')') 5596 fatal ("malformed spec function arguments"); 5597 args = save_string (p, endp - p); 5598 p = ++endp; 5599 5600 /* p now points to just past the end of the spec function expression. */ 5601 5602 funcval = eval_spec_function (func, args); 5603 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0) 5604 p = NULL; 5605 5606 free (func); 5607 free (args); 5608 5609 processing_spec_function--; 5610 5611 return p; 5612} 5613 5614/* Inline subroutine of handle_braces. Returns true if the current 5615 input suffix matches the atom bracketed by ATOM and END_ATOM. */ 5616static inline bool 5617input_suffix_matches (const char *atom, const char *end_atom) 5618{ 5619 /* We special case the semantics of {.s:...} and {.S:...} and their 5620 negative variants. Instead of testing the input filename suffix, 5621 we test whether the input source file is an assembler file or an 5622 assembler-with-cpp file respectively. This allows us to correctly 5623 handle the -x command line option. */ 5624 5625 if (atom + 1 == end_atom 5626 && input_file_compiler 5627 && input_file_compiler->suffix) 5628 { 5629 if (*atom == 's') 5630 return !strcmp (input_file_compiler->suffix, "@assembler"); 5631 if (*atom == 'S') 5632 return !strcmp (input_file_compiler->suffix, "@assembler-with-cpp"); 5633 } 5634 5635 return (input_suffix 5636 && !strncmp (input_suffix, atom, end_atom - atom) 5637 && input_suffix[end_atom - atom] == '\0'); 5638} 5639 5640/* Subroutine of handle_braces. Returns true if a switch 5641 matching the atom bracketed by ATOM and END_ATOM appeared on the 5642 command line. */ 5643static bool 5644switch_matches (const char *atom, const char *end_atom, int starred) 5645{ 5646 int i; 5647 int len = end_atom - atom; 5648 int plen = starred ? len : -1; 5649 5650 for (i = 0; i < n_switches; i++) 5651 if (!strncmp (switches[i].part1, atom, len) 5652 && (starred || switches[i].part1[len] == '\0') 5653 && check_live_switch (i, plen)) 5654 return true; 5655 5656 return false; 5657} 5658 5659/* Inline subroutine of handle_braces. Mark all of the switches which 5660 match ATOM (extends to END_ATOM; STARRED indicates whether there 5661 was a star after the atom) for later processing. */ 5662static inline void 5663mark_matching_switches (const char *atom, const char *end_atom, int starred) 5664{ 5665 int i; 5666 int len = end_atom - atom; 5667 int plen = starred ? len : -1; 5668 5669 for (i = 0; i < n_switches; i++) 5670 if (!strncmp (switches[i].part1, atom, len) 5671 && (starred || switches[i].part1[len] == '\0') 5672 && check_live_switch (i, plen)) 5673 switches[i].ordering = 1; 5674} 5675 5676/* Inline subroutine of handle_braces. Process all the currently 5677 marked switches through give_switch, and clear the marks. */ 5678static inline void 5679process_marked_switches (void) 5680{ 5681 int i; 5682 5683 for (i = 0; i < n_switches; i++) 5684 if (switches[i].ordering == 1) 5685 { 5686 switches[i].ordering = 0; 5687 give_switch (i, 0); 5688 } 5689} 5690 5691/* Handle a %{ ... } construct. P points just inside the leading {. 5692 Returns a pointer one past the end of the brace block, or 0 5693 if we call do_spec_1 and that returns -1. */ 5694 5695static const char * 5696handle_braces (const char *p) 5697{ 5698 const char *atom, *end_atom; 5699 const char *d_atom = NULL, *d_end_atom = NULL; 5700 const char *orig = p; 5701 5702 bool a_is_suffix; 5703 bool a_is_starred; 5704 bool a_is_negated; 5705 bool a_matched; 5706 5707 bool a_must_be_last = false; 5708 bool ordered_set = false; 5709 bool disjunct_set = false; 5710 bool disj_matched = false; 5711 bool disj_starred = true; 5712 bool n_way_choice = false; 5713 bool n_way_matched = false; 5714 5715#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) 5716 5717 do 5718 { 5719 if (a_must_be_last) 5720 goto invalid; 5721 5722 /* Scan one "atom" (S in the description above of %{}, possibly 5723 with !, ., or * modifiers). */ 5724 a_matched = a_is_suffix = a_is_starred = a_is_negated = false; 5725 5726 SKIP_WHITE(); 5727 if (*p == '!') 5728 p++, a_is_negated = true; 5729 5730 SKIP_WHITE(); 5731 if (*p == '.') 5732 p++, a_is_suffix = true; 5733 5734 atom = p; 5735 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '=' 5736 || *p == ',' || *p == '.' || *p == '@') 5737 p++; 5738 end_atom = p; 5739 5740 if (*p == '*') 5741 p++, a_is_starred = 1; 5742 5743 SKIP_WHITE(); 5744 switch (*p) 5745 { 5746 case '&': case '}': 5747 /* Substitute the switch(es) indicated by the current atom. */ 5748 ordered_set = true; 5749 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix 5750 || atom == end_atom) 5751 goto invalid; 5752 5753 mark_matching_switches (atom, end_atom, a_is_starred); 5754 5755 if (*p == '}') 5756 process_marked_switches (); 5757 break; 5758 5759 case '|': case ':': 5760 /* Substitute some text if the current atom appears as a switch 5761 or suffix. */ 5762 disjunct_set = true; 5763 if (ordered_set) 5764 goto invalid; 5765 5766 if (atom == end_atom) 5767 { 5768 if (!n_way_choice || disj_matched || *p == '|' 5769 || a_is_negated || a_is_suffix || a_is_starred) 5770 goto invalid; 5771 5772 /* An empty term may appear as the last choice of an 5773 N-way choice set; it means "otherwise". */ 5774 a_must_be_last = true; 5775 disj_matched = !n_way_matched; 5776 disj_starred = false; 5777 } 5778 else 5779 { 5780 if (a_is_suffix && a_is_starred) 5781 goto invalid; 5782 5783 if (!a_is_starred) 5784 disj_starred = false; 5785 5786 /* Don't bother testing this atom if we already have a 5787 match. */ 5788 if (!disj_matched && !n_way_matched) 5789 { 5790 if (a_is_suffix) 5791 a_matched = input_suffix_matches (atom, end_atom); 5792 else 5793 a_matched = switch_matches (atom, end_atom, a_is_starred); 5794 5795 if (a_matched != a_is_negated) 5796 { 5797 disj_matched = true; 5798 d_atom = atom; 5799 d_end_atom = end_atom; 5800 } 5801 } 5802 } 5803 5804 if (*p == ':') 5805 { 5806 /* Found the body, that is, the text to substitute if the 5807 current disjunction matches. */ 5808 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred, 5809 disj_matched && !n_way_matched); 5810 if (p == 0) 5811 return 0; 5812 5813 /* If we have an N-way choice, reset state for the next 5814 disjunction. */ 5815 if (*p == ';') 5816 { 5817 n_way_choice = true; 5818 n_way_matched |= disj_matched; 5819 disj_matched = false; 5820 disj_starred = true; 5821 d_atom = d_end_atom = NULL; 5822 } 5823 } 5824 break; 5825 5826 default: 5827 goto invalid; 5828 } 5829 } 5830 while (*p++ != '}'); 5831 5832 return p; 5833 5834 invalid: 5835 fatal ("braced spec '%s' is invalid at '%c'", orig, *p); 5836 5837#undef SKIP_WHITE 5838} 5839 5840/* Subroutine of handle_braces. Scan and process a brace substitution body 5841 (X in the description of %{} syntax). P points one past the colon; 5842 ATOM and END_ATOM bracket the first atom which was found to be true 5843 (present) in the current disjunction; STARRED indicates whether all 5844 the atoms in the current disjunction were starred (for syntax validation); 5845 MATCHED indicates whether the disjunction matched or not, and therefore 5846 whether or not the body is to be processed through do_spec_1 or just 5847 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1 5848 returns -1. */ 5849 5850static const char * 5851process_brace_body (const char *p, const char *atom, const char *end_atom, 5852 int starred, int matched) 5853{ 5854 const char *body, *end_body; 5855 unsigned int nesting_level; 5856 bool have_subst = false; 5857 5858 /* Locate the closing } or ;, honoring nested braces. 5859 Trim trailing whitespace. */ 5860 body = p; 5861 nesting_level = 1; 5862 for (;;) 5863 { 5864 if (*p == '{') 5865 nesting_level++; 5866 else if (*p == '}') 5867 { 5868 if (!--nesting_level) 5869 break; 5870 } 5871 else if (*p == ';' && nesting_level == 1) 5872 break; 5873 else if (*p == '%' && p[1] == '*' && nesting_level == 1) 5874 have_subst = true; 5875 else if (*p == '\0') 5876 goto invalid; 5877 p++; 5878 } 5879 5880 end_body = p; 5881 while (end_body[-1] == ' ' || end_body[-1] == '\t') 5882 end_body--; 5883 5884 if (have_subst && !starred) 5885 goto invalid; 5886 5887 if (matched) 5888 { 5889 /* Copy the substitution body to permanent storage and execute it. 5890 If have_subst is false, this is a simple matter of running the 5891 body through do_spec_1... */ 5892 char *string = save_string (body, end_body - body); 5893 if (!have_subst) 5894 { 5895 if (do_spec_1 (string, 0, NULL) < 0) 5896 return 0; 5897 } 5898 else 5899 { 5900 /* ... but if have_subst is true, we have to process the 5901 body once for each matching switch, with %* set to the 5902 variant part of the switch. */ 5903 unsigned int hard_match_len = end_atom - atom; 5904 int i; 5905 5906 for (i = 0; i < n_switches; i++) 5907 if (!strncmp (switches[i].part1, atom, hard_match_len) 5908 && check_live_switch (i, hard_match_len)) 5909 { 5910 if (do_spec_1 (string, 0, 5911 &switches[i].part1[hard_match_len]) < 0) 5912 return 0; 5913 /* Pass any arguments this switch has. */ 5914 give_switch (i, 1); 5915 suffix_subst = NULL; 5916 } 5917 } 5918 } 5919 5920 return p; 5921 5922 invalid: 5923 fatal ("braced spec body '%s' is invalid", body); 5924} 5925 5926/* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch 5927 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*} 5928 spec, or -1 if either exact match or %* is used. 5929 5930 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch 5931 whose value does not begin with "no-" is obsoleted by the same value 5932 with the "no-", similarly for a switch with the "no-" prefix. */ 5933 5934static int 5935check_live_switch (int switchnum, int prefix_length) 5936{ 5937 const char *name = switches[switchnum].part1; 5938 int i; 5939 5940 /* In the common case of {<at-most-one-letter>*}, a negating 5941 switch would always match, so ignore that case. We will just 5942 send the conflicting switches to the compiler phase. */ 5943 if (prefix_length >= 0 && prefix_length <= 1) 5944 return 1; 5945 5946 /* If we already processed this switch and determined if it was 5947 live or not, return our past determination. */ 5948 if (switches[switchnum].live_cond != 0) 5949 return switches[switchnum].live_cond > 0; 5950 5951 /* Now search for duplicate in a manner that depends on the name. */ 5952 switch (*name) 5953 { 5954 case 'O': 5955 for (i = switchnum + 1; i < n_switches; i++) 5956 if (switches[i].part1[0] == 'O') 5957 { 5958 switches[switchnum].validated = 1; 5959 switches[switchnum].live_cond = SWITCH_FALSE; 5960 return 0; 5961 } 5962 break; 5963 5964 case 'W': case 'f': case 'm': 5965 if (! strncmp (name + 1, "no-", 3)) 5966 { 5967 /* We have Xno-YYY, search for XYYY. */ 5968 for (i = switchnum + 1; i < n_switches; i++) 5969 if (switches[i].part1[0] == name[0] 5970 && ! strcmp (&switches[i].part1[1], &name[4])) 5971 { 5972 switches[switchnum].validated = 1; 5973 switches[switchnum].live_cond = SWITCH_FALSE; 5974 return 0; 5975 } 5976 } 5977 else 5978 { 5979 /* We have XYYY, search for Xno-YYY. */ 5980 for (i = switchnum + 1; i < n_switches; i++) 5981 if (switches[i].part1[0] == name[0] 5982 && switches[i].part1[1] == 'n' 5983 && switches[i].part1[2] == 'o' 5984 && switches[i].part1[3] == '-' 5985 && !strcmp (&switches[i].part1[4], &name[1])) 5986 { 5987 switches[switchnum].validated = 1; 5988 switches[switchnum].live_cond = SWITCH_FALSE; 5989 return 0; 5990 } 5991 } 5992 break; 5993 } 5994 5995 /* Otherwise the switch is live. */ 5996 switches[switchnum].live_cond = SWITCH_LIVE; 5997 return 1; 5998} 5999 6000/* Pass a switch to the current accumulating command 6001 in the same form that we received it. 6002 SWITCHNUM identifies the switch; it is an index into 6003 the vector of switches gcc received, which is `switches'. 6004 This cannot fail since it never finishes a command line. 6005 6006 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */ 6007 6008static void 6009give_switch (int switchnum, int omit_first_word) 6010{ 6011 if (switches[switchnum].live_cond == SWITCH_IGNORE) 6012 return; 6013 6014 if (!omit_first_word) 6015 { 6016 do_spec_1 ("-", 0, NULL); 6017 do_spec_1 (switches[switchnum].part1, 1, NULL); 6018 } 6019 6020 if (switches[switchnum].args != 0) 6021 { 6022 const char **p; 6023 for (p = switches[switchnum].args; *p; p++) 6024 { 6025 const char *arg = *p; 6026 6027 do_spec_1 (" ", 0, NULL); 6028 if (suffix_subst) 6029 { 6030 unsigned length = strlen (arg); 6031 int dot = 0; 6032 6033 while (length-- && !IS_DIR_SEPARATOR (arg[length])) 6034 if (arg[length] == '.') 6035 { 6036 ((char *)arg)[length] = 0; 6037 dot = 1; 6038 break; 6039 } 6040 do_spec_1 (arg, 1, NULL); 6041 if (dot) 6042 ((char *)arg)[length] = '.'; 6043 do_spec_1 (suffix_subst, 1, NULL); 6044 } 6045 else 6046 do_spec_1 (arg, 1, NULL); 6047 } 6048 } 6049 6050 do_spec_1 (" ", 0, NULL); 6051 switches[switchnum].validated = 1; 6052} 6053 6054/* Search for a file named NAME trying various prefixes including the 6055 user's -B prefix and some standard ones. 6056 Return the absolute file name found. If nothing is found, return NAME. */ 6057 6058static const char * 6059find_file (const char *name) 6060{ 6061 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true); 6062 return newname ? newname : name; 6063} 6064 6065/* Determine whether a directory exists. If LINKER, return 0 for 6066 certain fixed names not needed by the linker. */ 6067 6068static int 6069is_directory (const char *path1, bool linker) 6070{ 6071 int len1; 6072 char *path; 6073 char *cp; 6074 struct stat st; 6075 6076 /* Ensure the string ends with "/.". The resulting path will be a 6077 directory even if the given path is a symbolic link. */ 6078 len1 = strlen (path1); 6079 path = alloca (3 + len1); 6080 memcpy (path, path1, len1); 6081 cp = path + len1; 6082 if (!IS_DIR_SEPARATOR (cp[-1])) 6083 *cp++ = DIR_SEPARATOR; 6084 *cp++ = '.'; 6085 *cp = '\0'; 6086 6087#ifndef FREEBSD_NATIVE 6088 /* Exclude directories that the linker is known to search. */ 6089 if (linker 6090 && IS_DIR_SEPARATOR (path[0]) 6091 && ((cp - path == 6 6092 && strncmp (path + 1, "lib", 3) == 0) 6093 || (cp - path == 10 6094 && strncmp (path + 1, "usr", 3) == 0 6095 && IS_DIR_SEPARATOR (path[4]) 6096 && strncmp (path + 5, "lib", 3) == 0))) 6097 return 0; 6098#endif /* FREEBSD_NATIVE */ 6099 6100 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode)); 6101} 6102 6103/* Set up the various global variables to indicate that we're processing 6104 the input file named FILENAME. */ 6105 6106void 6107set_input (const char *filename) 6108{ 6109 const char *p; 6110 6111 input_filename = filename; 6112 input_filename_length = strlen (input_filename); 6113 6114 input_basename = input_filename; 6115#ifdef HAVE_DOS_BASED_FILE_SYSTEM 6116 /* Skip drive name so 'x:foo' is handled properly. */ 6117 if (input_basename[1] == ':') 6118 input_basename += 2; 6119#endif 6120 for (p = input_basename; *p; p++) 6121 if (IS_DIR_SEPARATOR (*p)) 6122 input_basename = p + 1; 6123 6124 /* Find a suffix starting with the last period, 6125 and set basename_length to exclude that suffix. */ 6126 basename_length = strlen (input_basename); 6127 suffixed_basename_length = basename_length; 6128 p = input_basename + basename_length; 6129 while (p != input_basename && *p != '.') 6130 --p; 6131 if (*p == '.' && p != input_basename) 6132 { 6133 basename_length = p - input_basename; 6134 input_suffix = p + 1; 6135 } 6136 else 6137 input_suffix = ""; 6138 6139 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then 6140 we will need to do a stat on the input_filename. The 6141 INPUT_STAT_SET signals that the stat is needed. */ 6142 input_stat_set = 0; 6143} 6144 6145/* On fatal signals, delete all the temporary files. */ 6146 6147static void 6148fatal_error (int signum) 6149{ 6150 signal (signum, SIG_DFL); 6151 delete_failure_queue (); 6152 delete_temp_files (); 6153 /* Get the same signal again, this time not handled, 6154 so its normal effect occurs. */ 6155 kill (getpid (), signum); 6156} 6157 6158extern int main (int, char **); 6159 6160int 6161main (int argc, char **argv) 6162{ 6163 size_t i; 6164 int value; 6165 int linker_was_run = 0; 6166 int lang_n_infiles = 0; 6167 int num_linker_inputs = 0; 6168 char *explicit_link_files; 6169 char *specs_file; 6170 const char *p; 6171 struct user_specs *uptr; 6172 6173 p = argv[0] + strlen (argv[0]); 6174 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) 6175 --p; 6176 programname = p; 6177 6178 xmalloc_set_program_name (programname); 6179 6180 expandargv (&argc, &argv); 6181 6182 prune_options (&argc, &argv); 6183 6184#ifdef GCC_DRIVER_HOST_INITIALIZATION 6185 /* Perform host dependent initialization when needed. */ 6186 GCC_DRIVER_HOST_INITIALIZATION; 6187#endif 6188 6189 /* Unlock the stdio streams. */ 6190 unlock_std_streams (); 6191 6192 gcc_init_libintl (); 6193 6194 if (signal (SIGINT, SIG_IGN) != SIG_IGN) 6195 signal (SIGINT, fatal_error); 6196#ifdef SIGHUP 6197 if (signal (SIGHUP, SIG_IGN) != SIG_IGN) 6198 signal (SIGHUP, fatal_error); 6199#endif 6200 if (signal (SIGTERM, SIG_IGN) != SIG_IGN) 6201 signal (SIGTERM, fatal_error); 6202#ifdef SIGPIPE 6203 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN) 6204 signal (SIGPIPE, fatal_error); 6205#endif 6206#ifdef SIGCHLD 6207 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will 6208 receive the signal. A different setting is inheritable */ 6209 signal (SIGCHLD, SIG_DFL); 6210#endif 6211 6212 /* Allocate the argument vector. */ 6213 alloc_args (); 6214 6215 obstack_init (&obstack); 6216 6217 /* Build multilib_select, et. al from the separate lines that make up each 6218 multilib selection. */ 6219 { 6220 const char *const *q = multilib_raw; 6221 int need_space; 6222 6223 obstack_init (&multilib_obstack); 6224 while ((p = *q++) != (char *) 0) 6225 obstack_grow (&multilib_obstack, p, strlen (p)); 6226 6227 obstack_1grow (&multilib_obstack, 0); 6228 multilib_select = XOBFINISH (&multilib_obstack, const char *); 6229 6230 q = multilib_matches_raw; 6231 while ((p = *q++) != (char *) 0) 6232 obstack_grow (&multilib_obstack, p, strlen (p)); 6233 6234 obstack_1grow (&multilib_obstack, 0); 6235 multilib_matches = XOBFINISH (&multilib_obstack, const char *); 6236 6237 q = multilib_exclusions_raw; 6238 while ((p = *q++) != (char *) 0) 6239 obstack_grow (&multilib_obstack, p, strlen (p)); 6240 6241 obstack_1grow (&multilib_obstack, 0); 6242 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *); 6243 6244 need_space = FALSE; 6245 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++) 6246 { 6247 if (need_space) 6248 obstack_1grow (&multilib_obstack, ' '); 6249 obstack_grow (&multilib_obstack, 6250 multilib_defaults_raw[i], 6251 strlen (multilib_defaults_raw[i])); 6252 need_space = TRUE; 6253 } 6254 6255 obstack_1grow (&multilib_obstack, 0); 6256 multilib_defaults = XOBFINISH (&multilib_obstack, const char *); 6257 } 6258 6259 /* Set up to remember the pathname of gcc and any options 6260 needed for collect. We use argv[0] instead of programname because 6261 we need the complete pathname. */ 6262 obstack_init (&collect_obstack); 6263 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1); 6264 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1); 6265 putenv (XOBFINISH (&collect_obstack, char *)); 6266 6267#ifdef INIT_ENVIRONMENT 6268 /* Set up any other necessary machine specific environment variables. */ 6269 putenv (INIT_ENVIRONMENT); 6270#endif 6271 6272 /* Make a table of what switches there are (switches, n_switches). 6273 Make a table of specified input files (infiles, n_infiles). 6274 Decode switches that are handled locally. */ 6275 6276 process_command (argc, (const char **) argv); 6277 6278 /* Initialize the vector of specs to just the default. 6279 This means one element containing 0s, as a terminator. */ 6280 6281 compilers = xmalloc (sizeof default_compilers); 6282 memcpy (compilers, default_compilers, sizeof default_compilers); 6283 n_compilers = n_default_compilers; 6284 6285 /* Read specs from a file if there is one. */ 6286 6287#ifdef FREEBSD_NATIVE 6288 machine_suffix = ""; 6289 just_machine_suffix = ""; 6290#else /* FREEBSD_NATIVE */ 6291 machine_suffix = concat (spec_machine, dir_separator_str, 6292 spec_version, dir_separator_str, NULL); 6293 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL); 6294#endif /* FREEBSD_NATIVE */ 6295 6296 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true); 6297 /* Read the specs file unless it is a default one. */ 6298 if (specs_file != 0 && strcmp (specs_file, "specs")) 6299 read_specs (specs_file, TRUE); 6300 else 6301 init_spec (); 6302 6303 /* We need to check standard_exec_prefix/just_machine_suffix/specs 6304 for any override of as, ld and libraries. */ 6305 specs_file = (char *) alloca (strlen (FBSD_DATA_PREFIX) 6306 + strlen (just_machine_suffix) 6307 + sizeof ("specs")); 6308 6309 strcpy (specs_file, FBSD_DATA_PREFIX); 6310 strcat (specs_file, just_machine_suffix); 6311 strcat (specs_file, "specs"); 6312 if (access (specs_file, R_OK) == 0) 6313 read_specs (specs_file, TRUE); 6314 6315 /* Process any configure-time defaults specified for the command line 6316 options, via OPTION_DEFAULT_SPECS. */ 6317 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++) 6318 do_option_spec (option_default_specs[i].name, 6319 option_default_specs[i].spec); 6320 6321 /* Process DRIVER_SELF_SPECS, adding any new options to the end 6322 of the command line. */ 6323 6324 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++) 6325 do_self_spec (driver_self_specs[i]); 6326 6327 /* If not cross-compiling, look for executables in the standard 6328 places. */ 6329 if (*cross_compile == '0') 6330 { 6331 if (*md_exec_prefix) 6332 { 6333 add_prefix (&exec_prefixes, md_exec_prefix, "GCC", 6334 PREFIX_PRIORITY_LAST, 0, 0); 6335 } 6336 } 6337 6338 /* Process sysroot_suffix_spec. */ 6339 if (*sysroot_suffix_spec != 0 6340 && do_spec_2 (sysroot_suffix_spec) == 0) 6341 { 6342 if (argbuf_index > 1) 6343 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC"); 6344 else if (argbuf_index == 1) 6345 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]); 6346 } 6347 6348#ifdef HAVE_LD_SYSROOT 6349 /* Pass the --sysroot option to the linker, if it supports that. If 6350 there is a sysroot_suffix_spec, it has already been processed by 6351 this point, so target_system_root really is the system root we 6352 should be using. */ 6353 if (target_system_root) 6354 { 6355 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) ")); 6356 obstack_grow0 (&obstack, link_spec, strlen (link_spec)); 6357 set_spec ("link", XOBFINISH (&obstack, const char *)); 6358 } 6359#endif 6360 6361 /* Process sysroot_hdrs_suffix_spec. */ 6362 if (*sysroot_hdrs_suffix_spec != 0 6363 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0) 6364 { 6365 if (argbuf_index > 1) 6366 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC"); 6367 else if (argbuf_index == 1) 6368 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]); 6369 } 6370 6371 /* Look for startfiles in the standard places. */ 6372 if (*startfile_prefix_spec != 0 6373 && do_spec_2 (startfile_prefix_spec) == 0 6374 && do_spec_1 (" ", 0, NULL) == 0) 6375 { 6376 int ndx; 6377 for (ndx = 0; ndx < argbuf_index; ndx++) 6378 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS", 6379 PREFIX_PRIORITY_LAST, 0, 1); 6380 } 6381 /* We should eventually get rid of all these and stick to 6382 startfile_prefix_spec exclusively. */ 6383 else if (*cross_compile == '0' || target_system_root) 6384 { 6385 if (*md_startfile_prefix) 6386 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix, 6387 "GCC", PREFIX_PRIORITY_LAST, 0, 1); 6388 6389 if (*md_startfile_prefix_1) 6390 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1, 6391 "GCC", PREFIX_PRIORITY_LAST, 0, 1); 6392 6393 /* If standard_startfile_prefix is relative, base it on 6394 standard_exec_prefix. This lets us move the installed tree 6395 as a unit. If GCC_EXEC_PREFIX is defined, base 6396 standard_startfile_prefix on that as well. 6397 6398 If the prefix is relative, only search it for native compilers; 6399 otherwise we will search a directory containing host libraries. */ 6400 if (IS_ABSOLUTE_PATH (standard_startfile_prefix)) 6401 add_sysrooted_prefix (&startfile_prefixes, 6402 standard_startfile_prefix, "BINUTILS", 6403 PREFIX_PRIORITY_LAST, 0, 1); 6404 else if (*cross_compile == '0') 6405 { 6406 if (gcc_exec_prefix) 6407 add_prefix (&startfile_prefixes, 6408 concat (gcc_exec_prefix, machine_suffix, 6409 standard_startfile_prefix, NULL), 6410 NULL, PREFIX_PRIORITY_LAST, 0, 1); 6411 add_prefix (&startfile_prefixes, 6412 concat (standard_exec_prefix, 6413 machine_suffix, 6414 standard_startfile_prefix, NULL), 6415 NULL, PREFIX_PRIORITY_LAST, 0, 1); 6416 } 6417 6418#ifndef FREEBSD_NATIVE 6419 if (*standard_startfile_prefix_1) 6420 add_sysrooted_prefix (&startfile_prefixes, 6421 standard_startfile_prefix_1, "BINUTILS", 6422 PREFIX_PRIORITY_LAST, 0, 1); 6423 if (*standard_startfile_prefix_2) 6424 add_sysrooted_prefix (&startfile_prefixes, 6425 standard_startfile_prefix_2, "BINUTILS", 6426 PREFIX_PRIORITY_LAST, 0, 1); 6427#endif 6428 } 6429 6430 /* Process any user specified specs in the order given on the command 6431 line. */ 6432 for (uptr = user_specs_head; uptr; uptr = uptr->next) 6433 { 6434 char *filename = find_a_file (&startfile_prefixes, uptr->filename, 6435 R_OK, true); 6436 read_specs (filename ? filename : uptr->filename, FALSE); 6437 } 6438 6439 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */ 6440 if (gcc_exec_prefix) 6441 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str, 6442 spec_version, dir_separator_str, NULL); 6443 6444 /* Now we have the specs. 6445 Set the `valid' bits for switches that match anything in any spec. */ 6446 6447 validate_all_switches (); 6448 6449 /* Now that we have the switches and the specs, set 6450 the subdirectory based on the options. */ 6451 set_multilib_dir (); 6452 6453 /* Warn about any switches that no pass was interested in. */ 6454 6455 for (i = 0; (int) i < n_switches; i++) 6456 if (! switches[i].validated) 6457 error ("unrecognized option '-%s'", switches[i].part1); 6458 6459 /* Obey some of the options. */ 6460 6461 if (print_search_dirs) 6462 { 6463#ifndef FREEBSD_NATIVE 6464 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix); 6465#else 6466 printf (_("install: %s\n"), standard_exec_prefix); 6467#endif 6468 printf (_("programs: %s\n"), 6469 build_search_list (&exec_prefixes, "", false, false)); 6470 printf (_("libraries: %s\n"), 6471 build_search_list (&startfile_prefixes, "", false, true)); 6472 return (0); 6473 } 6474 6475 if (print_file_name) 6476 { 6477 printf ("%s\n", find_file (print_file_name)); 6478 return (0); 6479 } 6480 6481 if (print_prog_name) 6482 { 6483 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0); 6484 printf ("%s\n", (newname ? newname : print_prog_name)); 6485 return (0); 6486 } 6487 6488 if (print_multi_lib) 6489 { 6490 print_multilib_info (); 6491 return (0); 6492 } 6493 6494 if (print_multi_directory) 6495 { 6496 if (multilib_dir == NULL) 6497 printf (".\n"); 6498 else 6499 printf ("%s\n", multilib_dir); 6500 return (0); 6501 } 6502 6503 if (print_multi_os_directory) 6504 { 6505 if (multilib_os_dir == NULL) 6506 printf (".\n"); 6507 else 6508 printf ("%s\n", multilib_os_dir); 6509 return (0); 6510 } 6511 6512 if (target_help_flag) 6513 { 6514 /* Print if any target specific options. */ 6515 6516 /* We do not exit here. Instead we have created a fake input file 6517 called 'target-dummy' which needs to be compiled, and we pass this 6518 on to the various sub-processes, along with the --target-help 6519 switch. */ 6520 } 6521 6522 if (print_help_list) 6523 { 6524 display_help (); 6525 6526 if (! verbose_flag) 6527 { 6528 printf (_("\nFor bug reporting instructions, please see:\n")); 6529 printf ("%s.\n", bug_report_url); 6530 6531 return (0); 6532 } 6533 6534 /* We do not exit here. Instead we have created a fake input file 6535 called 'help-dummy' which needs to be compiled, and we pass this 6536 on the various sub-processes, along with the --help switch. */ 6537 } 6538 6539 if (verbose_flag) 6540 { 6541 int n; 6542 const char *thrmod; 6543 6544 notice ("Target: %s\n", spec_machine); 6545 notice ("Configured with: %s\n", configuration_arguments); 6546 6547#ifdef THREAD_MODEL_SPEC 6548 /* We could have defined THREAD_MODEL_SPEC to "%*" by default, 6549 but there's no point in doing all this processing just to get 6550 thread_model back. */ 6551 obstack_init (&obstack); 6552 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model); 6553 obstack_1grow (&obstack, '\0'); 6554 thrmod = XOBFINISH (&obstack, const char *); 6555#else 6556 thrmod = thread_model; 6557#endif 6558 6559 notice ("Thread model: %s\n", thrmod); 6560 6561 /* compiler_version is truncated at the first space when initialized 6562 from version string, so truncate version_string at the first space 6563 before comparing. */ 6564 for (n = 0; version_string[n]; n++) 6565 if (version_string[n] == ' ') 6566 break; 6567 6568 if (! strncmp (version_string, compiler_version, n) 6569 && compiler_version[n] == 0) 6570 notice ("gcc version %s\n", version_string); 6571 else 6572 notice ("gcc driver version %s executing gcc version %s\n", 6573 version_string, compiler_version); 6574 6575 if (n_infiles == 0) 6576 return (0); 6577 } 6578 6579 if (n_infiles == added_libraries) 6580 fatal ("No input files specified"); 6581 6582 /* Make a place to record the compiler output file names 6583 that correspond to the input files. */ 6584 6585 i = n_infiles; 6586 i += lang_specific_extra_outfiles; 6587 outfiles = XCNEWVEC (const char *, i); 6588 6589 /* Record which files were specified explicitly as link input. */ 6590 6591 explicit_link_files = XCNEWVEC (char, n_infiles); 6592 6593 if (combine_flag) 6594 combine_inputs = true; 6595 else 6596 combine_inputs = false; 6597 6598 for (i = 0; (int) i < n_infiles; i++) 6599 { 6600 const char *name = infiles[i].name; 6601 struct compiler *compiler = lookup_compiler (name, 6602 strlen (name), 6603 infiles[i].language); 6604 6605 if (compiler && !(compiler->combinable)) 6606 combine_inputs = false; 6607 6608 if (lang_n_infiles > 0 && compiler != input_file_compiler 6609 && infiles[i].language && infiles[i].language[0] != '*') 6610 infiles[i].incompiler = compiler; 6611 else if (compiler) 6612 { 6613 lang_n_infiles++; 6614 input_file_compiler = compiler; 6615 infiles[i].incompiler = compiler; 6616 } 6617 else 6618 { 6619 /* Since there is no compiler for this input file, assume it is a 6620 linker file. */ 6621 explicit_link_files[i] = 1; 6622 infiles[i].incompiler = NULL; 6623 } 6624 infiles[i].compiled = false; 6625 infiles[i].preprocessed = false; 6626 } 6627 6628 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1) 6629 fatal ("cannot specify -o with -c or -S with multiple files"); 6630 6631 if (combine_flag && save_temps_flag) 6632 { 6633 bool save_combine_inputs = combine_inputs; 6634 /* Must do a separate pre-processing pass for C & Objective-C files, to 6635 obtain individual .i files. */ 6636 6637 combine_inputs = false; 6638 for (i = 0; (int) i < n_infiles; i++) 6639 { 6640 int this_file_error = 0; 6641 6642 input_file_number = i; 6643 set_input (infiles[i].name); 6644 if (infiles[i].incompiler 6645 && (infiles[i].incompiler)->needs_preprocessing) 6646 input_file_compiler = infiles[i].incompiler; 6647 else 6648 continue; 6649 6650 if (input_file_compiler) 6651 { 6652 if (input_file_compiler->spec[0] == '#') 6653 { 6654 error ("%s: %s compiler not installed on this system", 6655 input_filename, &input_file_compiler->spec[1]); 6656 this_file_error = 1; 6657 } 6658 else 6659 { 6660 value = do_spec (input_file_compiler->spec); 6661 infiles[i].preprocessed = true; 6662 if (!have_o_argbuf_index) 6663 fatal ("spec '%s' is invalid", input_file_compiler->spec); 6664 infiles[i].name = argbuf[have_o_argbuf_index]; 6665 infiles[i].incompiler 6666 = lookup_compiler (infiles[i].name, 6667 strlen (infiles[i].name), 6668 infiles[i].language); 6669 6670 if (value < 0) 6671 this_file_error = 1; 6672 } 6673 } 6674 6675 if (this_file_error) 6676 { 6677 delete_failure_queue (); 6678 error_count++; 6679 break; 6680 } 6681 clear_failure_queue (); 6682 } 6683 combine_inputs = save_combine_inputs; 6684 } 6685 6686 for (i = 0; (int) i < n_infiles; i++) 6687 { 6688 int this_file_error = 0; 6689 6690 /* Tell do_spec what to substitute for %i. */ 6691 6692 input_file_number = i; 6693 set_input (infiles[i].name); 6694 6695 if (infiles[i].compiled) 6696 continue; 6697 6698 /* Use the same thing in %o, unless cp->spec says otherwise. */ 6699 6700 outfiles[i] = input_filename; 6701 6702 /* Figure out which compiler from the file's suffix. */ 6703 6704 if (! combine_inputs) 6705 input_file_compiler 6706 = lookup_compiler (infiles[i].name, input_filename_length, 6707 infiles[i].language); 6708 else 6709 input_file_compiler = infiles[i].incompiler; 6710 6711 if (input_file_compiler) 6712 { 6713 /* Ok, we found an applicable compiler. Run its spec. */ 6714 6715 if (input_file_compiler->spec[0] == '#') 6716 { 6717 error ("%s: %s compiler not installed on this system", 6718 input_filename, &input_file_compiler->spec[1]); 6719 this_file_error = 1; 6720 } 6721 else 6722 { 6723 value = do_spec (input_file_compiler->spec); 6724 infiles[i].compiled = true; 6725 if (value < 0) 6726 this_file_error = 1; 6727 } 6728 } 6729 6730 /* If this file's name does not contain a recognized suffix, 6731 record it as explicit linker input. */ 6732 6733 else 6734 explicit_link_files[i] = 1; 6735 6736 /* Clear the delete-on-failure queue, deleting the files in it 6737 if this compilation failed. */ 6738 6739 if (this_file_error) 6740 { 6741 delete_failure_queue (); 6742 error_count++; 6743 } 6744 /* If this compilation succeeded, don't delete those files later. */ 6745 clear_failure_queue (); 6746 } 6747 6748 /* Reset the input file name to the first compile/object file name, for use 6749 with %b in LINK_SPEC. We use the first input file that we can find 6750 a compiler to compile it instead of using infiles.language since for 6751 languages other than C we use aliases that we then lookup later. */ 6752 if (n_infiles > 0) 6753 { 6754 int i; 6755 6756 for (i = 0; i < n_infiles ; i++) 6757 if (infiles[i].language && infiles[i].language[0] != '*') 6758 { 6759 set_input (infiles[i].name); 6760 break; 6761 } 6762 } 6763 6764 if (error_count == 0) 6765 { 6766 /* Make sure INPUT_FILE_NUMBER points to first available open 6767 slot. */ 6768 input_file_number = n_infiles; 6769 if (lang_specific_pre_link ()) 6770 error_count++; 6771 } 6772 6773 /* Determine if there are any linker input files. */ 6774 num_linker_inputs = 0; 6775 for (i = 0; (int) i < n_infiles; i++) 6776 if (explicit_link_files[i] || outfiles[i] != NULL) 6777 num_linker_inputs++; 6778 6779 /* Run ld to link all the compiler output files. */ 6780 6781 if (num_linker_inputs > 0 && error_count == 0) 6782 { 6783 int tmp = execution_count; 6784 6785 /* We'll use ld if we can't find collect2. */ 6786 if (! strcmp (linker_name_spec, "collect2")) 6787 { 6788 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false); 6789 if (s == NULL) 6790 linker_name_spec = "ld"; 6791 } 6792 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables 6793 for collect. */ 6794 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false); 6795 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true); 6796 6797 value = do_spec (link_command_spec); 6798 if (value < 0) 6799 error_count = 1; 6800 linker_was_run = (tmp != execution_count); 6801 } 6802 6803 /* If options said don't run linker, 6804 complain about input files to be given to the linker. */ 6805 6806 if (! linker_was_run && error_count == 0) 6807 for (i = 0; (int) i < n_infiles; i++) 6808 if (explicit_link_files[i]) 6809 error ("%s: linker input file unused because linking not done", 6810 outfiles[i]); 6811 6812 /* Delete some or all of the temporary files we made. */ 6813 6814 if (error_count) 6815 delete_failure_queue (); 6816 delete_temp_files (); 6817 6818 if (print_help_list) 6819 { 6820 printf (("\nFor bug reporting instructions, please see:\n")); 6821 printf ("%s\n", bug_report_url); 6822 } 6823 6824 return (signal_count != 0 ? 2 6825 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1) 6826 : 0); 6827} 6828 6829/* Find the proper compilation spec for the file name NAME, 6830 whose length is LENGTH. LANGUAGE is the specified language, 6831 or 0 if this file is to be passed to the linker. */ 6832 6833static struct compiler * 6834lookup_compiler (const char *name, size_t length, const char *language) 6835{ 6836 struct compiler *cp; 6837 6838 /* If this was specified by the user to be a linker input, indicate that. */ 6839 if (language != 0 && language[0] == '*') 6840 return 0; 6841 6842 /* Otherwise, look for the language, if one is spec'd. */ 6843 if (language != 0) 6844 { 6845 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6846 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language)) 6847 return cp; 6848 6849 error ("language %s not recognized", language); 6850 return 0; 6851 } 6852 6853 /* Look for a suffix. */ 6854 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6855 { 6856 if (/* The suffix `-' matches only the file name `-'. */ 6857 (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) 6858 || (strlen (cp->suffix) < length 6859 /* See if the suffix matches the end of NAME. */ 6860 && !strcmp (cp->suffix, 6861 name + length - strlen (cp->suffix)) 6862 )) 6863 break; 6864 } 6865 6866#if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM) 6867 /* Look again, but case-insensitively this time. */ 6868 if (cp < compilers) 6869 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6870 { 6871 if (/* The suffix `-' matches only the file name `-'. */ 6872 (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) 6873 || (strlen (cp->suffix) < length 6874 /* See if the suffix matches the end of NAME. */ 6875 && ((!strcmp (cp->suffix, 6876 name + length - strlen (cp->suffix)) 6877 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ")) 6878 && !strcasecmp (cp->suffix, 6879 name + length - strlen (cp->suffix))) 6880 )) 6881 break; 6882 } 6883#endif 6884 6885 if (cp >= compilers) 6886 { 6887 if (cp->spec[0] != '@') 6888 /* A non-alias entry: return it. */ 6889 return cp; 6890 6891 /* An alias entry maps a suffix to a language. 6892 Search for the language; pass 0 for NAME and LENGTH 6893 to avoid infinite recursion if language not found. */ 6894 return lookup_compiler (NULL, 0, cp->spec + 1); 6895 } 6896 return 0; 6897} 6898 6899static char * 6900save_string (const char *s, int len) 6901{ 6902 char *result = XNEWVEC (char, len + 1); 6903 6904 memcpy (result, s, len); 6905 result[len] = 0; 6906 return result; 6907} 6908 6909void 6910pfatal_with_name (const char *name) 6911{ 6912 perror_with_name (name); 6913 delete_temp_files (); 6914 exit (1); 6915} 6916 6917static void 6918perror_with_name (const char *name) 6919{ 6920 error ("%s: %s", name, xstrerror (errno)); 6921} 6922 6923/* Output an error message and exit. */ 6924 6925void 6926fancy_abort (const char *file, int line, const char *func) 6927{ 6928 fatal_ice ("internal gcc abort in %s, at %s:%d", func, file, line); 6929} 6930 6931/* Output an error message and exit. */ 6932 6933void 6934fatal_ice (const char *cmsgid, ...) 6935{ 6936 va_list ap; 6937 6938 va_start (ap, cmsgid); 6939 6940 fprintf (stderr, "%s: ", programname); 6941 vfprintf (stderr, _(cmsgid), ap); 6942 va_end (ap); 6943 fprintf (stderr, "\n"); 6944 delete_temp_files (); 6945 exit (pass_exit_codes ? ICE_EXIT_CODE : 1); 6946} 6947 6948void 6949fatal (const char *cmsgid, ...) 6950{ 6951 va_list ap; 6952 6953 va_start (ap, cmsgid); 6954 6955 fprintf (stderr, "%s: ", programname); 6956 vfprintf (stderr, _(cmsgid), ap); 6957 va_end (ap); 6958 fprintf (stderr, "\n"); 6959 delete_temp_files (); 6960 exit (1); 6961} 6962 6963/* The argument is actually c-format, not gcc-internal-format, 6964 but because functions with identical names are used through 6965 the rest of the compiler with gcc-internal-format, we just 6966 need to hope all users of these functions use the common 6967 subset between c-format and gcc-internal-format. */ 6968 6969void 6970error (const char *gmsgid, ...) 6971{ 6972 va_list ap; 6973 6974 va_start (ap, gmsgid); 6975 fprintf (stderr, "%s: ", programname); 6976 vfprintf (stderr, _(gmsgid), ap); 6977 va_end (ap); 6978 6979 fprintf (stderr, "\n"); 6980} 6981 6982static void 6983notice (const char *cmsgid, ...) 6984{ 6985 va_list ap; 6986 6987 va_start (ap, cmsgid); 6988 vfprintf (stderr, _(cmsgid), ap); 6989 va_end (ap); 6990} 6991 6992static inline void 6993validate_switches_from_spec (const char *spec) 6994{ 6995 const char *p = spec; 6996 char c; 6997 while ((c = *p++)) 6998 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{'))) 6999 /* We have a switch spec. */ 7000 p = validate_switches (p + 1); 7001} 7002 7003static void 7004validate_all_switches (void) 7005{ 7006 struct compiler *comp; 7007 struct spec_list *spec; 7008 7009 for (comp = compilers; comp->spec; comp++) 7010 validate_switches_from_spec (comp->spec); 7011 7012 /* Look through the linked list of specs read from the specs file. */ 7013 for (spec = specs; spec; spec = spec->next) 7014 validate_switches_from_spec (*spec->ptr_spec); 7015 7016 validate_switches_from_spec (link_command_spec); 7017} 7018 7019/* Look at the switch-name that comes after START 7020 and mark as valid all supplied switches that match it. */ 7021 7022static const char * 7023validate_switches (const char *start) 7024{ 7025 const char *p = start; 7026 const char *atom; 7027 size_t len; 7028 int i; 7029 bool suffix = false; 7030 bool starred = false; 7031 7032#define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0) 7033 7034next_member: 7035 SKIP_WHITE (); 7036 7037 if (*p == '!') 7038 p++; 7039 7040 SKIP_WHITE (); 7041 if (*p == '.') 7042 suffix = true, p++; 7043 7044 atom = p; 7045 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '=' 7046 || *p == ',' || *p == '.' || *p == '@') 7047 p++; 7048 len = p - atom; 7049 7050 if (*p == '*') 7051 starred = true, p++; 7052 7053 SKIP_WHITE (); 7054 7055 if (!suffix) 7056 { 7057 /* Mark all matching switches as valid. */ 7058 for (i = 0; i < n_switches; i++) 7059 if (!strncmp (switches[i].part1, atom, len) 7060 && (starred || switches[i].part1[len] == 0)) 7061 switches[i].validated = 1; 7062 } 7063 7064 if (*p) p++; 7065 if (*p && (p[-1] == '|' || p[-1] == '&')) 7066 goto next_member; 7067 7068 if (*p && p[-1] == ':') 7069 { 7070 while (*p && *p != ';' && *p != '}') 7071 { 7072 if (*p == '%') 7073 { 7074 p++; 7075 if (*p == '{' || *p == '<') 7076 p = validate_switches (p+1); 7077 else if (p[0] == 'W' && p[1] == '{') 7078 p = validate_switches (p+2); 7079 } 7080 else 7081 p++; 7082 } 7083 7084 if (*p) p++; 7085 if (*p && p[-1] == ';') 7086 goto next_member; 7087 } 7088 7089 return p; 7090#undef SKIP_WHITE 7091} 7092 7093struct mdswitchstr 7094{ 7095 const char *str; 7096 int len; 7097}; 7098 7099static struct mdswitchstr *mdswitches; 7100static int n_mdswitches; 7101 7102/* Check whether a particular argument was used. The first time we 7103 canonicalize the switches to keep only the ones we care about. */ 7104 7105static int 7106used_arg (const char *p, int len) 7107{ 7108 struct mswitchstr 7109 { 7110 const char *str; 7111 const char *replace; 7112 int len; 7113 int rep_len; 7114 }; 7115 7116 static struct mswitchstr *mswitches; 7117 static int n_mswitches; 7118 int i, j; 7119 7120 if (!mswitches) 7121 { 7122 struct mswitchstr *matches; 7123 const char *q; 7124 int cnt = 0; 7125 7126 /* Break multilib_matches into the component strings of string 7127 and replacement string. */ 7128 for (q = multilib_matches; *q != '\0'; q++) 7129 if (*q == ';') 7130 cnt++; 7131 7132 matches = alloca ((sizeof (struct mswitchstr)) * cnt); 7133 i = 0; 7134 q = multilib_matches; 7135 while (*q != '\0') 7136 { 7137 matches[i].str = q; 7138 while (*q != ' ') 7139 { 7140 if (*q == '\0') 7141 { 7142 invalid_matches: 7143 fatal ("multilib spec '%s' is invalid", multilib_matches); 7144 } 7145 q++; 7146 } 7147 matches[i].len = q - matches[i].str; 7148 7149 matches[i].replace = ++q; 7150 while (*q != ';' && *q != '\0') 7151 { 7152 if (*q == ' ') 7153 goto invalid_matches; 7154 q++; 7155 } 7156 matches[i].rep_len = q - matches[i].replace; 7157 i++; 7158 if (*q == ';') 7159 q++; 7160 } 7161 7162 /* Now build a list of the replacement string for switches that we care 7163 about. Make sure we allocate at least one entry. This prevents 7164 xmalloc from calling fatal, and prevents us from re-executing this 7165 block of code. */ 7166 mswitches 7167 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1)); 7168 for (i = 0; i < n_switches; i++) 7169 if (switches[i].live_cond != SWITCH_IGNORE) 7170 { 7171 int xlen = strlen (switches[i].part1); 7172 for (j = 0; j < cnt; j++) 7173 if (xlen == matches[j].len 7174 && ! strncmp (switches[i].part1, matches[j].str, xlen)) 7175 { 7176 mswitches[n_mswitches].str = matches[j].replace; 7177 mswitches[n_mswitches].len = matches[j].rep_len; 7178 mswitches[n_mswitches].replace = (char *) 0; 7179 mswitches[n_mswitches].rep_len = 0; 7180 n_mswitches++; 7181 break; 7182 } 7183 } 7184 7185 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present 7186 on the command line nor any options mutually incompatible with 7187 them. */ 7188 for (i = 0; i < n_mdswitches; i++) 7189 { 7190 const char *r; 7191 7192 for (q = multilib_options; *q != '\0'; q++) 7193 { 7194 while (*q == ' ') 7195 q++; 7196 7197 r = q; 7198 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0 7199 || strchr (" /", q[mdswitches[i].len]) == NULL) 7200 { 7201 while (*q != ' ' && *q != '/' && *q != '\0') 7202 q++; 7203 if (*q != '/') 7204 break; 7205 q++; 7206 } 7207 7208 if (*q != ' ' && *q != '\0') 7209 { 7210 while (*r != ' ' && *r != '\0') 7211 { 7212 q = r; 7213 while (*q != ' ' && *q != '/' && *q != '\0') 7214 q++; 7215 7216 if (used_arg (r, q - r)) 7217 break; 7218 7219 if (*q != '/') 7220 { 7221 mswitches[n_mswitches].str = mdswitches[i].str; 7222 mswitches[n_mswitches].len = mdswitches[i].len; 7223 mswitches[n_mswitches].replace = (char *) 0; 7224 mswitches[n_mswitches].rep_len = 0; 7225 n_mswitches++; 7226 break; 7227 } 7228 7229 r = q + 1; 7230 } 7231 break; 7232 } 7233 } 7234 } 7235 } 7236 7237 for (i = 0; i < n_mswitches; i++) 7238 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len)) 7239 return 1; 7240 7241 return 0; 7242} 7243 7244static int 7245default_arg (const char *p, int len) 7246{ 7247 int i; 7248 7249 for (i = 0; i < n_mdswitches; i++) 7250 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len)) 7251 return 1; 7252 7253 return 0; 7254} 7255 7256/* Work out the subdirectory to use based on the options. The format of 7257 multilib_select is a list of elements. Each element is a subdirectory 7258 name followed by a list of options followed by a semicolon. The format 7259 of multilib_exclusions is the same, but without the preceding 7260 directory. First gcc will check the exclusions, if none of the options 7261 beginning with an exclamation point are present, and all of the other 7262 options are present, then we will ignore this completely. Passing 7263 that, gcc will consider each multilib_select in turn using the same 7264 rules for matching the options. If a match is found, that subdirectory 7265 will be used. */ 7266 7267static void 7268set_multilib_dir (void) 7269{ 7270 const char *p; 7271 unsigned int this_path_len; 7272 const char *this_path, *this_arg; 7273 const char *start, *end; 7274 int not_arg; 7275 int ok, ndfltok, first; 7276 7277 n_mdswitches = 0; 7278 start = multilib_defaults; 7279 while (*start == ' ' || *start == '\t') 7280 start++; 7281 while (*start != '\0') 7282 { 7283 n_mdswitches++; 7284 while (*start != ' ' && *start != '\t' && *start != '\0') 7285 start++; 7286 while (*start == ' ' || *start == '\t') 7287 start++; 7288 } 7289 7290 if (n_mdswitches) 7291 { 7292 int i = 0; 7293 7294 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches); 7295 for (start = multilib_defaults; *start != '\0'; start = end + 1) 7296 { 7297 while (*start == ' ' || *start == '\t') 7298 start++; 7299 7300 if (*start == '\0') 7301 break; 7302 7303 for (end = start + 1; 7304 *end != ' ' && *end != '\t' && *end != '\0'; end++) 7305 ; 7306 7307 obstack_grow (&multilib_obstack, start, end - start); 7308 obstack_1grow (&multilib_obstack, 0); 7309 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *); 7310 mdswitches[i++].len = end - start; 7311 7312 if (*end == '\0') 7313 break; 7314 } 7315 } 7316 7317 p = multilib_exclusions; 7318 while (*p != '\0') 7319 { 7320 /* Ignore newlines. */ 7321 if (*p == '\n') 7322 { 7323 ++p; 7324 continue; 7325 } 7326 7327 /* Check the arguments. */ 7328 ok = 1; 7329 while (*p != ';') 7330 { 7331 if (*p == '\0') 7332 { 7333 invalid_exclusions: 7334 fatal ("multilib exclusions '%s' is invalid", 7335 multilib_exclusions); 7336 } 7337 7338 if (! ok) 7339 { 7340 ++p; 7341 continue; 7342 } 7343 7344 this_arg = p; 7345 while (*p != ' ' && *p != ';') 7346 { 7347 if (*p == '\0') 7348 goto invalid_exclusions; 7349 ++p; 7350 } 7351 7352 if (*this_arg != '!') 7353 not_arg = 0; 7354 else 7355 { 7356 not_arg = 1; 7357 ++this_arg; 7358 } 7359 7360 ok = used_arg (this_arg, p - this_arg); 7361 if (not_arg) 7362 ok = ! ok; 7363 7364 if (*p == ' ') 7365 ++p; 7366 } 7367 7368 if (ok) 7369 return; 7370 7371 ++p; 7372 } 7373 7374 first = 1; 7375 p = multilib_select; 7376 while (*p != '\0') 7377 { 7378 /* Ignore newlines. */ 7379 if (*p == '\n') 7380 { 7381 ++p; 7382 continue; 7383 } 7384 7385 /* Get the initial path. */ 7386 this_path = p; 7387 while (*p != ' ') 7388 { 7389 if (*p == '\0') 7390 { 7391 invalid_select: 7392 fatal ("multilib select '%s' is invalid", 7393 multilib_select); 7394 } 7395 ++p; 7396 } 7397 this_path_len = p - this_path; 7398 7399 /* Check the arguments. */ 7400 ok = 1; 7401 ndfltok = 1; 7402 ++p; 7403 while (*p != ';') 7404 { 7405 if (*p == '\0') 7406 goto invalid_select; 7407 7408 if (! ok) 7409 { 7410 ++p; 7411 continue; 7412 } 7413 7414 this_arg = p; 7415 while (*p != ' ' && *p != ';') 7416 { 7417 if (*p == '\0') 7418 goto invalid_select; 7419 ++p; 7420 } 7421 7422 if (*this_arg != '!') 7423 not_arg = 0; 7424 else 7425 { 7426 not_arg = 1; 7427 ++this_arg; 7428 } 7429 7430 /* If this is a default argument, we can just ignore it. 7431 This is true even if this_arg begins with '!'. Beginning 7432 with '!' does not mean that this argument is necessarily 7433 inappropriate for this library: it merely means that 7434 there is a more specific library which uses this 7435 argument. If this argument is a default, we need not 7436 consider that more specific library. */ 7437 ok = used_arg (this_arg, p - this_arg); 7438 if (not_arg) 7439 ok = ! ok; 7440 7441 if (! ok) 7442 ndfltok = 0; 7443 7444 if (default_arg (this_arg, p - this_arg)) 7445 ok = 1; 7446 7447 if (*p == ' ') 7448 ++p; 7449 } 7450 7451 if (ok && first) 7452 { 7453 if (this_path_len != 1 7454 || this_path[0] != '.') 7455 { 7456 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1); 7457 char *q; 7458 7459 strncpy (new_multilib_dir, this_path, this_path_len); 7460 new_multilib_dir[this_path_len] = '\0'; 7461 q = strchr (new_multilib_dir, ':'); 7462 if (q != NULL) 7463 *q = '\0'; 7464 multilib_dir = new_multilib_dir; 7465 } 7466 first = 0; 7467 } 7468 7469 if (ndfltok) 7470 { 7471 const char *q = this_path, *end = this_path + this_path_len; 7472 7473 while (q < end && *q != ':') 7474 q++; 7475 if (q < end) 7476 { 7477 char *new_multilib_os_dir = XNEWVEC (char, end - q); 7478 memcpy (new_multilib_os_dir, q + 1, end - q - 1); 7479 new_multilib_os_dir[end - q - 1] = '\0'; 7480 multilib_os_dir = new_multilib_os_dir; 7481 break; 7482 } 7483 } 7484 7485 ++p; 7486 } 7487 7488 if (multilib_dir == NULL && multilib_os_dir != NULL 7489 && strcmp (multilib_os_dir, ".") == 0) 7490 { 7491 free ((char *) multilib_os_dir); 7492 multilib_os_dir = NULL; 7493 } 7494 else if (multilib_dir != NULL && multilib_os_dir == NULL) 7495 multilib_os_dir = multilib_dir; 7496} 7497 7498/* Print out the multiple library subdirectory selection 7499 information. This prints out a series of lines. Each line looks 7500 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is 7501 required. Only the desired options are printed out, the negative 7502 matches. The options are print without a leading dash. There are 7503 no spaces to make it easy to use the information in the shell. 7504 Each subdirectory is printed only once. This assumes the ordering 7505 generated by the genmultilib script. Also, we leave out ones that match 7506 the exclusions. */ 7507 7508static void 7509print_multilib_info (void) 7510{ 7511 const char *p = multilib_select; 7512 const char *last_path = 0, *this_path; 7513 int skip; 7514 unsigned int last_path_len = 0; 7515 7516 while (*p != '\0') 7517 { 7518 skip = 0; 7519 /* Ignore newlines. */ 7520 if (*p == '\n') 7521 { 7522 ++p; 7523 continue; 7524 } 7525 7526 /* Get the initial path. */ 7527 this_path = p; 7528 while (*p != ' ') 7529 { 7530 if (*p == '\0') 7531 { 7532 invalid_select: 7533 fatal ("multilib select '%s' is invalid", multilib_select); 7534 } 7535 7536 ++p; 7537 } 7538 7539 /* When --disable-multilib was used but target defines 7540 MULTILIB_OSDIRNAMES, entries starting with .: are there just 7541 to find multilib_os_dir, so skip them from output. */ 7542 if (this_path[0] == '.' && this_path[1] == ':') 7543 skip = 1; 7544 7545 /* Check for matches with the multilib_exclusions. We don't bother 7546 with the '!' in either list. If any of the exclusion rules match 7547 all of its options with the select rule, we skip it. */ 7548 { 7549 const char *e = multilib_exclusions; 7550 const char *this_arg; 7551 7552 while (*e != '\0') 7553 { 7554 int m = 1; 7555 /* Ignore newlines. */ 7556 if (*e == '\n') 7557 { 7558 ++e; 7559 continue; 7560 } 7561 7562 /* Check the arguments. */ 7563 while (*e != ';') 7564 { 7565 const char *q; 7566 int mp = 0; 7567 7568 if (*e == '\0') 7569 { 7570 invalid_exclusion: 7571 fatal ("multilib exclusion '%s' is invalid", 7572 multilib_exclusions); 7573 } 7574 7575 if (! m) 7576 { 7577 ++e; 7578 continue; 7579 } 7580 7581 this_arg = e; 7582 7583 while (*e != ' ' && *e != ';') 7584 { 7585 if (*e == '\0') 7586 goto invalid_exclusion; 7587 ++e; 7588 } 7589 7590 q = p + 1; 7591 while (*q != ';') 7592 { 7593 const char *arg; 7594 int len = e - this_arg; 7595 7596 if (*q == '\0') 7597 goto invalid_select; 7598 7599 arg = q; 7600 7601 while (*q != ' ' && *q != ';') 7602 { 7603 if (*q == '\0') 7604 goto invalid_select; 7605 ++q; 7606 } 7607 7608 if (! strncmp (arg, this_arg, 7609 (len < q - arg) ? q - arg : len) 7610 || default_arg (this_arg, e - this_arg)) 7611 { 7612 mp = 1; 7613 break; 7614 } 7615 7616 if (*q == ' ') 7617 ++q; 7618 } 7619 7620 if (! mp) 7621 m = 0; 7622 7623 if (*e == ' ') 7624 ++e; 7625 } 7626 7627 if (m) 7628 { 7629 skip = 1; 7630 break; 7631 } 7632 7633 if (*e != '\0') 7634 ++e; 7635 } 7636 } 7637 7638 if (! skip) 7639 { 7640 /* If this is a duplicate, skip it. */ 7641 skip = (last_path != 0 7642 && (unsigned int) (p - this_path) == last_path_len 7643 && ! strncmp (last_path, this_path, last_path_len)); 7644 7645 last_path = this_path; 7646 last_path_len = p - this_path; 7647 } 7648 7649 /* If this directory requires any default arguments, we can skip 7650 it. We will already have printed a directory identical to 7651 this one which does not require that default argument. */ 7652 if (! skip) 7653 { 7654 const char *q; 7655 7656 q = p + 1; 7657 while (*q != ';') 7658 { 7659 const char *arg; 7660 7661 if (*q == '\0') 7662 goto invalid_select; 7663 7664 if (*q == '!') 7665 arg = NULL; 7666 else 7667 arg = q; 7668 7669 while (*q != ' ' && *q != ';') 7670 { 7671 if (*q == '\0') 7672 goto invalid_select; 7673 ++q; 7674 } 7675 7676 if (arg != NULL 7677 && default_arg (arg, q - arg)) 7678 { 7679 skip = 1; 7680 break; 7681 } 7682 7683 if (*q == ' ') 7684 ++q; 7685 } 7686 } 7687 7688 if (! skip) 7689 { 7690 const char *p1; 7691 7692 for (p1 = last_path; p1 < p && *p1 != ':'; p1++) 7693 putchar (*p1); 7694 putchar (';'); 7695 } 7696 7697 ++p; 7698 while (*p != ';') 7699 { 7700 int use_arg; 7701 7702 if (*p == '\0') 7703 goto invalid_select; 7704 7705 if (skip) 7706 { 7707 ++p; 7708 continue; 7709 } 7710 7711 use_arg = *p != '!'; 7712 7713 if (use_arg) 7714 putchar ('@'); 7715 7716 while (*p != ' ' && *p != ';') 7717 { 7718 if (*p == '\0') 7719 goto invalid_select; 7720 if (use_arg) 7721 putchar (*p); 7722 ++p; 7723 } 7724 7725 if (*p == ' ') 7726 ++p; 7727 } 7728 7729 if (! skip) 7730 { 7731 /* If there are extra options, print them now. */ 7732 if (multilib_extra && *multilib_extra) 7733 { 7734 int print_at = TRUE; 7735 const char *q; 7736 7737 for (q = multilib_extra; *q != '\0'; q++) 7738 { 7739 if (*q == ' ') 7740 print_at = TRUE; 7741 else 7742 { 7743 if (print_at) 7744 putchar ('@'); 7745 putchar (*q); 7746 print_at = FALSE; 7747 } 7748 } 7749 } 7750 7751 putchar ('\n'); 7752 } 7753 7754 ++p; 7755 } 7756} 7757 7758/* if-exists built-in spec function. 7759 7760 Checks to see if the file specified by the absolute pathname in 7761 ARGS exists. Returns that pathname if found. 7762 7763 The usual use for this function is to check for a library file 7764 (whose name has been expanded with %s). */ 7765 7766static const char * 7767if_exists_spec_function (int argc, const char **argv) 7768{ 7769 /* Must have only one argument. */ 7770 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) 7771 return argv[0]; 7772 7773 return NULL; 7774} 7775 7776/* if-exists-else built-in spec function. 7777 7778 This is like if-exists, but takes an additional argument which 7779 is returned if the first argument does not exist. */ 7780 7781static const char * 7782if_exists_else_spec_function (int argc, const char **argv) 7783{ 7784 /* Must have exactly two arguments. */ 7785 if (argc != 2) 7786 return NULL; 7787 7788 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK)) 7789 return argv[0]; 7790 7791 return argv[1]; 7792} 7793 7794/* replace-outfile built-in spec function. 7795 7796 This looks for the first argument in the outfiles array's name and 7797 replaces it with the second argument. */ 7798 7799static const char * 7800replace_outfile_spec_function (int argc, const char **argv) 7801{ 7802 int i; 7803 /* Must have exactly two arguments. */ 7804 if (argc != 2) 7805 abort (); 7806 7807 for (i = 0; i < n_infiles; i++) 7808 { 7809 if (outfiles[i] && !strcmp (outfiles[i], argv[0])) 7810 outfiles[i] = xstrdup (argv[1]); 7811 } 7812 return NULL; 7813} 7814 7815/* Given two version numbers, compares the two numbers. 7816 A version number must match the regular expression 7817 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))* 7818*/ 7819static int 7820compare_version_strings (const char *v1, const char *v2) 7821{ 7822 int rresult; 7823 regex_t r; 7824 7825 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$", 7826 REG_EXTENDED | REG_NOSUB) != 0) 7827 abort (); 7828 rresult = regexec (&r, v1, 0, NULL, 0); 7829 if (rresult == REG_NOMATCH) 7830 fatal ("invalid version number `%s'", v1); 7831 else if (rresult != 0) 7832 abort (); 7833 rresult = regexec (&r, v2, 0, NULL, 0); 7834 if (rresult == REG_NOMATCH) 7835 fatal ("invalid version number `%s'", v2); 7836 else if (rresult != 0) 7837 abort (); 7838 7839 return strverscmp (v1, v2); 7840} 7841 7842 7843/* version_compare built-in spec function. 7844 7845 This takes an argument of the following form: 7846 7847 <comparison-op> <arg1> [<arg2>] <switch> <result> 7848 7849 and produces "result" if the comparison evaluates to true, 7850 and nothing if it doesn't. 7851 7852 The supported <comparison-op> values are: 7853 7854 >= true if switch is a later (or same) version than arg1 7855 !> opposite of >= 7856 < true if switch is an earlier version than arg1 7857 !< opposite of < 7858 >< true if switch is arg1 or later, and earlier than arg2 7859 <> true if switch is earlier than arg1 or is arg2 or later 7860 7861 If the switch is not present, the condition is false unless 7862 the first character of the <comparison-op> is '!'. 7863 7864 For example, 7865 %:version-compare(>= 10.3 mmacosx-version-min= -lmx) 7866 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */ 7867 7868static const char * 7869version_compare_spec_function (int argc, const char **argv) 7870{ 7871 int comp1, comp2; 7872 size_t switch_len; 7873 const char *switch_value = NULL; 7874 int nargs = 1, i; 7875 bool result; 7876 7877 if (argc < 3) 7878 fatal ("too few arguments to %%:version-compare"); 7879 if (argv[0][0] == '\0') 7880 abort (); 7881 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!') 7882 nargs = 2; 7883 if (argc != nargs + 3) 7884 fatal ("too many arguments to %%:version-compare"); 7885 7886 switch_len = strlen (argv[nargs + 1]); 7887 for (i = 0; i < n_switches; i++) 7888 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len) 7889 && check_live_switch (i, switch_len)) 7890 switch_value = switches[i].part1 + switch_len; 7891 7892 if (switch_value == NULL) 7893 comp1 = comp2 = -1; 7894 else 7895 { 7896 comp1 = compare_version_strings (switch_value, argv[1]); 7897 if (nargs == 2) 7898 comp2 = compare_version_strings (switch_value, argv[2]); 7899 else 7900 comp2 = -1; /* This value unused. */ 7901 } 7902 7903 switch (argv[0][0] << 8 | argv[0][1]) 7904 { 7905 case '>' << 8 | '=': 7906 result = comp1 >= 0; 7907 break; 7908 case '!' << 8 | '<': 7909 result = comp1 >= 0 || switch_value == NULL; 7910 break; 7911 case '<' << 8: 7912 result = comp1 < 0; 7913 break; 7914 case '!' << 8 | '>': 7915 result = comp1 < 0 || switch_value == NULL; 7916 break; 7917 case '>' << 8 | '<': 7918 result = comp1 >= 0 && comp2 < 0; 7919 break; 7920 case '<' << 8 | '>': 7921 result = comp1 < 0 || comp2 >= 0; 7922 break; 7923 7924 default: 7925 fatal ("unknown operator '%s' in %%:version-compare", argv[0]); 7926 } 7927 if (! result) 7928 return NULL; 7929 7930 return argv[nargs + 2]; 7931} 7932 7933/* %:include builtin spec function. This differs from %include in that it 7934 can be nested inside a spec, and thus be conditionalized. It takes 7935 one argument, the filename, and looks for it in the startfile path. 7936 The result is always NULL, i.e. an empty expansion. */ 7937 7938static const char * 7939include_spec_function (int argc, const char **argv) 7940{ 7941 char *file; 7942 7943 if (argc != 1) 7944 abort (); 7945 7946 file = find_a_file (&startfile_prefixes, argv[0], R_OK, 0); 7947 read_specs (file ? file : argv[0], FALSE); 7948 7949 return NULL; 7950} 7951