gcc.c revision 97902
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 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 2, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING. If not, write to the Free 19Software Foundation, 59 Temple Place - Suite 330, Boston, MA 2002111-1307, USA. 21 22This paragraph is here to try to keep Sun CC from dying. 23The number of chars here seems crucial!!!! */ 24 25/* $FreeBSD: head/contrib/gcc/gcc.c 97902 2002-06-06 00:49:58Z obrien $ */ 26 27/* This program is the user interface to the C compiler and possibly to 28other compilers. It is used because compilation is a complicated procedure 29which involves running several programs and passing temporary files between 30them, forwarding the users switches to those programs selectively, 31and deleting the temporary files at the end. 32 33CC recognizes how to compile each input file by suffixes in the file names. 34Once it knows which kind of compilation to perform, the procedure for 35compilation is specified by a string called a "spec". */ 36 37/* A Short Introduction to Adding a Command-Line Option. 38 39 Before adding a command-line option, consider if it is really 40 necessary. Each additional command-line option adds complexity and 41 is difficult to remove in subsequent versions. 42 43 In the following, consider adding the command-line argument 44 `--bar'. 45 46 1. Each command-line option is specified in the specs file. The 47 notation is described below in the comment entitled "The Specs 48 Language". Read it. 49 50 2. In this file, add an entry to "option_map" equating the long 51 `--' argument version and any shorter, single letter version. Read 52 the comments in the declaration of "struct option_map" for an 53 explanation. Do not omit the first `-'. 54 55 3. Look in the "specs" file to determine which program or option 56 list should be given the argument, e.g., "cc1_options". Add the 57 appropriate syntax for the shorter option version to the 58 corresponding "const char *" entry in this file. Omit the first 59 `-' from the option. For example, use `-bar', rather than `--bar'. 60 61 4. If the argument takes an argument, e.g., `--baz argument1', 62 modify either DEFAULT_SWITCH_TAKES_ARG or 63 DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-' 64 from `--baz'. 65 66 5. Document the option in this file's display_help(). If the 67 option is passed to a subprogram, modify its corresponding 68 function, e.g., cppinit.c:print_help() or toplev.c:display_help(), 69 instead. 70 71 6. Compile and test. Make sure that your new specs file is being 72 read. For example, use a debugger to investigate the value of 73 "specs_file" in main(). */ 74 75#include "config.h" 76#include "system.h" 77#include <signal.h> 78#if ! defined( SIGCHLD ) && defined( SIGCLD ) 79# define SIGCHLD SIGCLD 80#endif 81#include "obstack.h" 82#include "intl.h" 83#include "prefix.h" 84#include "gcc.h" 85#include "flags.h" 86 87#ifdef HAVE_SYS_RESOURCE_H 88#include <sys/resource.h> 89#endif 90#if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE 91extern int getrusage PARAMS ((int, struct rusage *)); 92#endif 93 94/* By default there is no special suffix for target executables. */ 95/* FIXME: when autoconf is fixed, remove the host check - dj */ 96#if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX) 97#define HAVE_TARGET_EXECUTABLE_SUFFIX 98#else 99#undef TARGET_EXECUTABLE_SUFFIX 100#define TARGET_EXECUTABLE_SUFFIX "" 101#endif 102 103/* By default there is no special suffix for host executables. */ 104#ifdef HOST_EXECUTABLE_SUFFIX 105#define HAVE_HOST_EXECUTABLE_SUFFIX 106#else 107#define HOST_EXECUTABLE_SUFFIX "" 108#endif 109 110/* By default, the suffix for target object files is ".o". */ 111#ifdef TARGET_OBJECT_SUFFIX 112#define HAVE_TARGET_OBJECT_SUFFIX 113#else 114#define TARGET_OBJECT_SUFFIX ".o" 115#endif 116 117#ifndef VMS 118/* FIXME: the location independence code for VMS is hairier than this, 119 and hasn't been written. */ 120#ifndef DIR_UP 121#define DIR_UP ".." 122#endif /* DIR_UP */ 123#endif /* VMS */ 124 125static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; 126 127#define obstack_chunk_alloc xmalloc 128#define obstack_chunk_free free 129 130#ifndef GET_ENV_PATH_LIST 131#define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0) 132#endif 133 134/* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */ 135#ifndef LIBRARY_PATH_ENV 136#define LIBRARY_PATH_ENV "LIBRARY_PATH" 137#endif 138 139#ifndef HAVE_KILL 140#define kill(p,s) raise(s) 141#endif 142 143/* If a stage of compilation returns an exit status >= 1, 144 compilation of that file ceases. */ 145 146#define MIN_FATAL_STATUS 1 147 148/* Flag set by cppspec.c to 1. */ 149int is_cpp_driver; 150 151/* Flag saying to pass the greatest exit code returned by a sub-process 152 to the calling program. */ 153static int pass_exit_codes; 154 155/* Definition of string containing the arguments given to configure. */ 156#include "configargs.h" 157 158/* Flag saying to print the directories gcc will search through looking for 159 programs, libraries, etc. */ 160 161static int print_search_dirs; 162 163/* Flag saying to print the full filename of this file 164 as found through our usual search mechanism. */ 165 166static const char *print_file_name = NULL; 167 168/* As print_file_name, but search for executable file. */ 169 170static const char *print_prog_name = NULL; 171 172/* Flag saying to print the relative path we'd use to 173 find libgcc.a given the current compiler flags. */ 174 175static int print_multi_directory; 176 177/* Flag saying to print the list of subdirectories and 178 compiler flags used to select them in a standard form. */ 179 180static int print_multi_lib; 181 182/* Flag saying to print the command line options understood by gcc and its 183 sub-processes. */ 184 185static int print_help_list; 186 187/* Flag indicating whether we should print the command and arguments */ 188 189static int verbose_flag; 190 191/* Flag indicating whether we should ONLY print the command and 192 arguments (like verbose_flag) without executing the command. 193 Displayed arguments are quoted so that the generated command 194 line is suitable for execution. This is intended for use in 195 shell scripts to capture the driver-generated command line. */ 196static int verbose_only_flag; 197 198/* Flag indicating to print target specific command line options. */ 199 200static int target_help_flag; 201 202/* Flag indicating whether we should report subprocess execution times 203 (if this is supported by the system - see pexecute.c). */ 204 205static int report_times; 206 207/* Nonzero means write "temp" files in source directory 208 and use the source file's name in them, and don't delete them. */ 209 210static int save_temps_flag; 211 212/* The compiler version. */ 213 214static const char *compiler_version; 215 216/* The target version specified with -V */ 217 218static const char *spec_version = DEFAULT_TARGET_VERSION; 219 220/* The target machine specified with -b. */ 221 222static const char *spec_machine = DEFAULT_TARGET_MACHINE; 223 224/* Nonzero if cross-compiling. 225 When -b is used, the value comes from the `specs' file. */ 226 227#ifdef CROSS_COMPILE 228static const char *cross_compile = "1"; 229#else 230static const char *cross_compile = "0"; 231#endif 232 233#ifdef MODIFY_TARGET_NAME 234 235/* Information on how to alter the target name based on a command-line 236 switch. The only case we support now is simply appending or deleting a 237 string to or from the end of the first part of the configuration name. */ 238 239static const struct modify_target 240{ 241 const char *const sw; 242 const enum add_del {ADD, DELETE} add_del; 243 const char *const str; 244} 245modify_target[] = MODIFY_TARGET_NAME; 246#endif 247 248/* The number of errors that have occurred; the link phase will not be 249 run if this is non-zero. */ 250static int error_count = 0; 251 252/* Greatest exit code of sub-processes that has been encountered up to 253 now. */ 254static int greatest_status = 1; 255 256/* This is the obstack which we use to allocate many strings. */ 257 258static struct obstack obstack; 259 260/* This is the obstack to build an environment variable to pass to 261 collect2 that describes all of the relevant switches of what to 262 pass the compiler in building the list of pointers to constructors 263 and destructors. */ 264 265static struct obstack collect_obstack; 266 267/* These structs are used to collect resource usage information for 268 subprocesses. */ 269#ifdef HAVE_GETRUSAGE 270static struct rusage rus, prus; 271#endif 272 273/* Forward declaration for prototypes. */ 274struct path_prefix; 275 276static void init_spec PARAMS ((void)); 277#ifndef VMS 278static char **split_directories PARAMS ((const char *, int *)); 279static void free_split_directories PARAMS ((char **)); 280static char *make_relative_prefix PARAMS ((const char *, const char *, const char *)); 281#endif /* VMS */ 282static void store_arg PARAMS ((const char *, int, int)); 283static char *load_specs PARAMS ((const char *)); 284static void read_specs PARAMS ((const char *, int)); 285static void set_spec PARAMS ((const char *, const char *)); 286static struct compiler *lookup_compiler PARAMS ((const char *, size_t, const char *)); 287static char *build_search_list PARAMS ((struct path_prefix *, const char *, int)); 288static void putenv_from_prefixes PARAMS ((struct path_prefix *, const char *)); 289static int access_check PARAMS ((const char *, int)); 290static char *find_a_file PARAMS ((struct path_prefix *, const char *, int)); 291static void add_prefix PARAMS ((struct path_prefix *, const char *, 292 const char *, int, int, int *)); 293static void translate_options PARAMS ((int *, const char *const **)); 294static char *skip_whitespace PARAMS ((char *)); 295static void delete_if_ordinary PARAMS ((const char *)); 296static void delete_temp_files PARAMS ((void)); 297static void delete_failure_queue PARAMS ((void)); 298static void clear_failure_queue PARAMS ((void)); 299static int check_live_switch PARAMS ((int, int)); 300static const char *handle_braces PARAMS ((const char *)); 301static char *save_string PARAMS ((const char *, int)); 302static void set_collect_gcc_options PARAMS ((void)); 303static int do_spec_1 PARAMS ((const char *, int, const char *)); 304static const char *find_file PARAMS ((const char *)); 305static int is_directory PARAMS ((const char *, const char *, int)); 306static void validate_switches PARAMS ((const char *)); 307static void validate_all_switches PARAMS ((void)); 308static void give_switch PARAMS ((int, int, int)); 309static int used_arg PARAMS ((const char *, int)); 310static int default_arg PARAMS ((const char *, int)); 311static void set_multilib_dir PARAMS ((void)); 312static void print_multilib_info PARAMS ((void)); 313static void perror_with_name PARAMS ((const char *)); 314static void pfatal_pexecute PARAMS ((const char *, const char *)) 315 ATTRIBUTE_NORETURN; 316static void notice PARAMS ((const char *, ...)) 317 ATTRIBUTE_PRINTF_1; 318static void display_help PARAMS ((void)); 319static void add_preprocessor_option PARAMS ((const char *, int)); 320static void add_assembler_option PARAMS ((const char *, int)); 321static void add_linker_option PARAMS ((const char *, int)); 322static void process_command PARAMS ((int, const char *const *)); 323static int execute PARAMS ((void)); 324static void clear_args PARAMS ((void)); 325static void fatal_error PARAMS ((int)); 326#ifdef ENABLE_SHARED_LIBGCC 327static void init_gcc_specs PARAMS ((struct obstack *, 328 const char *, const char *, 329 const char *)); 330#endif 331#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 332static const char *convert_filename PARAMS ((const char *, int, int)); 333#endif 334 335/* The Specs Language 336 337Specs are strings containing lines, each of which (if not blank) 338is made up of a program name, and arguments separated by spaces. 339The program name must be exact and start from root, since no path 340is searched and it is unreliable to depend on the current working directory. 341Redirection of input or output is not supported; the subprograms must 342accept filenames saying what files to read and write. 343 344In addition, the specs can contain %-sequences to substitute variable text 345or for conditional text. Here is a table of all defined %-sequences. 346Note that spaces are not generated automatically around the results of 347expanding these sequences; therefore, you can concatenate them together 348or with constant text in a single argument. 349 350 %% substitute one % into the program name or argument. 351 %i substitute the name of the input file being processed. 352 %b substitute the basename of the input file being processed. 353 This is the substring up to (and not including) the last period 354 and not including the directory. 355 %B same as %b, but include the file suffix (text after the last period). 356 %gSUFFIX 357 substitute a file name that has suffix SUFFIX and is chosen 358 once per compilation, and mark the argument a la %d. To reduce 359 exposure to denial-of-service attacks, the file name is now 360 chosen in a way that is hard to predict even when previously 361 chosen file names are known. For example, `%g.s ... %g.o ... %g.s' 362 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches 363 the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it 364 had been pre-processed. Previously, %g was simply substituted 365 with a file name chosen once per compilation, without regard 366 to any appended suffix (which was therefore treated just like 367 ordinary text), making such attacks more likely to succeed. 368 %uSUFFIX 369 like %g, but generates a new temporary file name even if %uSUFFIX 370 was already seen. 371 %USUFFIX 372 substitutes the last file name generated with %uSUFFIX, generating a 373 new one if there is no such last file name. In the absence of any 374 %uSUFFIX, this is just like %gSUFFIX, except they don't share 375 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s' 376 would involve the generation of two distinct file names, one 377 for each `%g.s' and another for each `%U.s'. Previously, %U was 378 simply substituted with a file name chosen for the previous %u, 379 without regard to any appended suffix. 380 %jSUFFIX 381 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is 382 writable, and if save-temps is off; otherwise, substitute the name 383 of a temporary file, just like %u. This temporary file is not 384 meant for communication between processes, but rather as a junk 385 disposal mechanism. 386 %.SUFFIX 387 substitutes .SUFFIX for the suffixes of a matched switch's args when 388 it is subsequently output with %*. SUFFIX is terminated by the next 389 space or %. 390 %d marks the argument containing or following the %d as a 391 temporary file name, so that that file will be deleted if CC exits 392 successfully. Unlike %g, this contributes no text to the argument. 393 %w marks the argument containing or following the %w as the 394 "output file" of this compilation. This puts the argument 395 into the sequence of arguments that %o will substitute later. 396 %W{...} 397 like %{...} but mark last argument supplied within 398 as a file to be deleted on failure. 399 %o substitutes the names of all the output files, with spaces 400 automatically placed around them. You should write spaces 401 around the %o as well or the results are undefined. 402 %o is for use in the specs for running the linker. 403 Input files whose names have no recognized suffix are not compiled 404 at all, but they are included among the output files, so they will 405 be linked. 406 %O substitutes the suffix for object files. Note that this is 407 handled specially when it immediately follows %g, %u, or %U 408 (with or without a suffix argument) because of the need for 409 those to form complete file names. The handling is such that 410 %O is treated exactly as if it had already been substituted, 411 except that %g, %u, and %U do not currently support additional 412 SUFFIX characters following %O as they would following, for 413 example, `.o'. 414 %p substitutes the standard macro predefinitions for the 415 current target machine. Use this when running cpp. 416 %P like %p, but puts `__' before and after the name of each macro. 417 (Except macros that already have __.) 418 This is for ANSI C. 419 %I Substitute a -iprefix option made from GCC_EXEC_PREFIX. 420 %s current argument is the name of a library or startup file of some sort. 421 Search for that file in a standard list of directories 422 and substitute the full name found. 423 %eSTR Print STR as an error message. STR is terminated by a newline. 424 Use this when inconsistent options are detected. 425 %nSTR Print STR as an notice. STR is terminated by a newline. 426 %x{OPTION} Accumulate an option for %X. 427 %X Output the accumulated linker options specified by compilations. 428 %Y Output the accumulated assembler options specified by compilations. 429 %Z Output the accumulated preprocessor options specified by compilations. 430 %v1 Substitute the major version number of GCC. 431 (For version 2.5.3, this is 2.) 432 %v2 Substitute the minor version number of GCC. 433 (For version 2.5.3, this is 5.) 434 %v3 Substitute the patch level number of GCC. 435 (For version 2.5.3, this is 3.) 436 %a process ASM_SPEC as a spec. 437 This allows config.h to specify part of the spec for running as. 438 %A process ASM_FINAL_SPEC as a spec. A capital A is actually 439 used here. This can be used to run a post-processor after the 440 assembler has done its job. 441 %D Dump out a -L option for each directory in startfile_prefixes. 442 If multilib_dir is set, extra entries are generated with it affixed. 443 %l process LINK_SPEC as a spec. 444 %L process LIB_SPEC as a spec. 445 %G process LIBGCC_SPEC as a spec. 446 %M output multilib_dir with directory separators replaced with "_"; 447 if multilib_dir is not set or is ".", output "". 448 %S process STARTFILE_SPEC as a spec. A capital S is actually used here. 449 %E process ENDFILE_SPEC as a spec. A capital E is actually used here. 450 %C process CPP_SPEC as a spec. 451 %1 process CC1_SPEC as a spec. 452 %2 process CC1PLUS_SPEC as a spec. 453 %| output "-" if the input for the current command is coming from a pipe. 454 %* substitute the variable part of a matched option. (See below.) 455 Note that each comma in the substituted string is replaced by 456 a single space. 457 %{S} substitutes the -S switch, if that switch was given to CC. 458 If that switch was not specified, this substitutes nothing. 459 Here S is a metasyntactic variable. 460 %{S*} substitutes all the switches specified to CC whose names start 461 with -S. This is used for -o, -I, etc; switches that take 462 arguments. CC considers `-o foo' as being one switch whose 463 name starts with `o'. %{o*} would substitute this text, 464 including the space; thus, two arguments would be generated. 465 %{^S*} likewise, but don't put a blank between a switch and any args. 466 %{S*&T*} likewise, but preserve order of S and T options (the order 467 of S and T in the spec is not significant). Can be any number 468 of ampersand-separated variables; for each the wild card is 469 optional. Useful for CPP as %{D*&U*&A*}. 470 %{S*:X} substitutes X if one or more switches whose names start with -S are 471 specified to CC. Note that the tail part of the -S option 472 (i.e. the part matched by the `*') will be substituted for each 473 occurrence of %* within X. 474 %{<S} remove all occurrences of -S from the command line. 475 Note - this option is position dependent. % commands in the 476 spec string before this option will see -S, % commands in the 477 spec string after this option will not. 478 %{S:X} substitutes X, but only if the -S switch was given to CC. 479 %{!S:X} substitutes X, but only if the -S switch was NOT given to CC. 480 %{|S:X} like %{S:X}, but if no S switch, substitute `-'. 481 %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'. 482 %{.S:X} substitutes X, but only if processing a file with suffix S. 483 %{!.S:X} substitutes X, but only if NOT processing a file with suffix S. 484 %{S|P:X} substitutes X if either -S or -P was given to CC. This may be 485 combined with ! and . as above binding stronger than the OR. 486 %(Spec) processes a specification defined in a specs file as *Spec: 487 %[Spec] as above, but put __ around -D arguments 488 489The conditional text X in a %{S:X} or %{!S:X} construct may contain 490other nested % constructs or spaces, or even newlines. They are 491processed as usual, as described above. 492 493The -O, -f, -m, and -W switches are handled specifically in these 494constructs. If another value of -O or the negated form of a -f, -m, or 495-W switch is found later in the command line, the earlier switch 496value is ignored, except with {S*} where S is just one letter; this 497passes all matching options. 498 499The character | at the beginning of the predicate text is used to indicate 500that a command should be piped to the following command, but only if -pipe 501is specified. 502 503Note that it is built into CC which switches take arguments and which 504do not. You might think it would be useful to generalize this to 505allow each compiler's spec to say which switches take arguments. But 506this cannot be done in a consistent fashion. CC cannot even decide 507which input files have been specified without knowing which switches 508take arguments, and it must know which input files to compile in order 509to tell which compilers to run. 510 511CC also knows implicitly that arguments starting in `-l' are to be 512treated as compiler output files, and passed to the linker in their 513proper position among the other output files. */ 514 515/* Define the macros used for specs %a, %l, %L, %S, %C, %1. */ 516 517/* config.h can define ASM_SPEC to provide extra args to the assembler 518 or extra switch-translations. */ 519#ifndef ASM_SPEC 520#define ASM_SPEC "" 521#endif 522 523/* config.h can define ASM_FINAL_SPEC to run a post processor after 524 the assembler has run. */ 525#ifndef ASM_FINAL_SPEC 526#define ASM_FINAL_SPEC "" 527#endif 528 529/* config.h can define CPP_SPEC to provide extra args to the C preprocessor 530 or extra switch-translations. */ 531#ifndef CPP_SPEC 532#define CPP_SPEC "" 533#endif 534 535/* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus 536 or extra switch-translations. */ 537#ifndef CC1_SPEC 538#define CC1_SPEC "" 539#endif 540 541/* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus 542 or extra switch-translations. */ 543#ifndef CC1PLUS_SPEC 544#define CC1PLUS_SPEC "" 545#endif 546 547/* config.h can define LINK_SPEC to provide extra args to the linker 548 or extra switch-translations. */ 549#ifndef LINK_SPEC 550#define LINK_SPEC "" 551#endif 552 553/* config.h can define LIB_SPEC to override the default libraries. */ 554#ifndef LIB_SPEC 555#define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}" 556#endif 557 558/* config.h can define LIBGCC_SPEC to override how and when libgcc.a is 559 included. */ 560#ifndef LIBGCC_SPEC 561#if defined(LINK_LIBGCC_SPECIAL) || defined(LINK_LIBGCC_SPECIAL_1) 562/* Have gcc do the search for libgcc.a. */ 563#define LIBGCC_SPEC "libgcc.a%s" 564#else 565#define LIBGCC_SPEC "-lgcc" 566#endif 567#endif 568 569/* config.h can define STARTFILE_SPEC to override the default crt0 files. */ 570#ifndef STARTFILE_SPEC 571#define STARTFILE_SPEC \ 572 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}" 573#endif 574 575/* config.h can define SWITCHES_NEED_SPACES to control which options 576 require spaces between the option and the argument. */ 577#ifndef SWITCHES_NEED_SPACES 578#define SWITCHES_NEED_SPACES "" 579#endif 580 581/* config.h can define ENDFILE_SPEC to override the default crtn files. */ 582#ifndef ENDFILE_SPEC 583#define ENDFILE_SPEC "" 584#endif 585 586#ifndef LINKER_NAME 587#define LINKER_NAME "collect2" 588#endif 589 590/* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g' 591 to the assembler. */ 592#ifndef ASM_DEBUG_SPEC 593# if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \ 594 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) 595# define ASM_DEBUG_SPEC \ 596 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \ 597 ? "%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}" \ 598 : "%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}") 599# else 600# if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG) 601# define ASM_DEBUG_SPEC "%{g*:--gstabs}" 602# endif 603# if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) 604# define ASM_DEBUG_SPEC "%{g*:--gdwarf2}" 605# endif 606# endif 607#endif 608#ifndef ASM_DEBUG_SPEC 609# define ASM_DEBUG_SPEC "" 610#endif 611 612/* Here is the spec for running the linker, after compiling all files. */ 613 614/* This is overridable by the target in case they need to specify the 615 -lgcc and -lc order specially, yet not require them to override all 616 of LINK_COMMAND_SPEC. */ 617#ifndef LINK_GCC_C_SEQUENCE_SPEC 618#define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G" 619#endif 620 621/* -u* was put back because both BSD and SysV seem to support it. */ 622/* %{static:} simply prevents an error message if the target machine 623 doesn't handle -static. */ 624/* We want %{T*} after %{L*} and %D so that it can be used to specify linker 625 scripts which exist in user specified directories, or in standard 626 directories. */ 627#ifndef LINK_COMMAND_SPEC 628#define LINK_COMMAND_SPEC "\ 629%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ 630 %(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\ 631 %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\ 632 %{static:} %{L*} %(link_libgcc) %o %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\ 633 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}" 634#endif 635 636#ifndef LINK_LIBGCC_SPEC 637# ifdef LINK_LIBGCC_SPECIAL 638/* Don't generate -L options for startfile prefix list. */ 639# define LINK_LIBGCC_SPEC "" 640# else 641/* Do generate them. */ 642# define LINK_LIBGCC_SPEC "%D" 643# endif 644#endif 645 646static const char *asm_debug = ASM_DEBUG_SPEC; 647static const char *cpp_spec = CPP_SPEC; 648static const char *cpp_predefines = CPP_PREDEFINES; 649static const char *cc1_spec = CC1_SPEC; 650static const char *cc1plus_spec = CC1PLUS_SPEC; 651static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC; 652static const char *asm_spec = ASM_SPEC; 653static const char *asm_final_spec = ASM_FINAL_SPEC; 654static const char *link_spec = LINK_SPEC; 655static const char *lib_spec = LIB_SPEC; 656static const char *libgcc_spec = LIBGCC_SPEC; 657static const char *endfile_spec = ENDFILE_SPEC; 658static const char *startfile_spec = STARTFILE_SPEC; 659static const char *switches_need_spaces = SWITCHES_NEED_SPACES; 660static const char *linker_name_spec = LINKER_NAME; 661static const char *link_command_spec = LINK_COMMAND_SPEC; 662static const char *link_libgcc_spec = LINK_LIBGCC_SPEC; 663 664/* Standard options to cpp, cc1, and as, to reduce duplication in specs. 665 There should be no need to override these in target dependent files, 666 but we need to copy them to the specs file so that newer versions 667 of the GCC driver can correctly drive older tool chains with the 668 appropriate -B options. */ 669 670static const char *trad_capable_cpp = 671"%{traditional|ftraditional|traditional-cpp:trad}cpp0"; 672 673static const char *cpp_unique_options = 674"%{C:%{!E:%eGNU C does not support -C without using -E}}\ 675 %{nostdinc*} %{C} %{v} %{I*} %{P} %{$} %I\ 676 %{MD:-MD %W{!o: %b.d}%W{o*:%.d%*}}\ 677 %{MMD:-MMD %W{!o: %b.d}%W{o*:%.d%*}}\ 678 %{M} %{MM} %W{MF*} %{MG} %{MP} %{MQ*} %{MT*}\ 679 %{!E:%{!M:%{!MM:%{MD|MMD:%{o*:-MQ %*}}}}}\ 680 %{!no-gcc:-D__GNUC__=%v1 -D__GNUC_MINOR__=%v2 -D__GNUC_PATCHLEVEL__=%v3}\ 681 %{!undef:%{!ansi:%{!std=*:%p}%{std=gnu*:%p}} %P} %{trigraphs}\ 682 %{Os:-D__OPTIMIZE_SIZE__} %{O*:%{!O0:-D__OPTIMIZE__}}\ 683 %{fno-inline|O0|!O*:-D__NO_INLINE__} %{ffast-math:-D__FAST_MATH__}\ 684 %{fshort-wchar:-U__WCHAR_TYPE__ -D__WCHAR_TYPE__=short\\ unsigned\\ int}\ 685 %{ffreestanding:-D__STDC_HOSTED__=0} %{fno-hosted:-D__STDC_HOSTED__=0}\ 686 %{!ffreestanding:%{!fno-hosted:-D__STDC_HOSTED__=1}} %{remap}\ 687 %{g3:-dD} %{H} %C %{D*&U*&A*} %{i*} %Z %i\ 688 %{E|M|MM:%W{o*}}"; 689 690/* This contains cpp options which are common with cc1_options and are passed 691 only when preprocessing only to avoid duplication. */ 692static const char *cpp_options = 693"%(cpp_unique_options) %{std*} %{d*} %{W*} %{w} %{pedantic*}\ 694 %{fshow-column} %{fno-show-column}\ 695 %{fsigned-char&funsigned-char}\ 696 %{fleading-underscore} %{fno-leading-underscore}\ 697 %{fno-operator-names} %{ftabstop=*}"; 698 699/* NB: This is shared amongst all front-ends. */ 700static const char *cc1_options = 701"%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ 702 %1 %{!Q:-quiet} -dumpbase %B %{d*} %{m*} %{a*}\ 703 %{g*} %{O*} %{W*} %{w} %{pedantic*} %{std*} %{ansi}\ 704 %{traditional} %{v:-version} %{pg:-p} %{p} %{f*}\ 705 %{Qn:-fno-ident} %{--help:--help}\ 706 %{--target-help:--target-help}\ 707 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\ 708 %{fsyntax-only:-o %j} %{-param*}"; 709 710static const char *asm_options = 711"%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}"; 712 713static const char *invoke_as = 714"%{!S:-o %{|!pipe:%g.s} |\n as %(asm_options) %{!pipe:%g.s} %A }"; 715 716/* Some compilers have limits on line lengths, and the multilib_select 717 and/or multilib_matches strings can be very long, so we build them at 718 run time. */ 719static struct obstack multilib_obstack; 720static const char *multilib_select; 721static const char *multilib_matches; 722static const char *multilib_defaults; 723static const char *multilib_exclusions; 724#include "multilib.h" 725 726/* Check whether a particular argument is a default argument. */ 727 728#ifndef MULTILIB_DEFAULTS 729#define MULTILIB_DEFAULTS { "" } 730#endif 731 732static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS; 733 734struct user_specs 735{ 736 struct user_specs *next; 737 const char *filename; 738}; 739 740static struct user_specs *user_specs_head, *user_specs_tail; 741 742/* This defines which switch letters take arguments. */ 743 744#define DEFAULT_SWITCH_TAKES_ARG(CHAR) \ 745 ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \ 746 || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \ 747 || (CHAR) == 'I' || (CHAR) == 'm' || (CHAR) == 'x' \ 748 || (CHAR) == 'L' || (CHAR) == 'A' || (CHAR) == 'V' \ 749 || (CHAR) == 'B' || (CHAR) == 'b') 750 751#ifndef SWITCH_TAKES_ARG 752#define SWITCH_TAKES_ARG(CHAR) DEFAULT_SWITCH_TAKES_ARG(CHAR) 753#endif 754 755/* This defines which multi-letter switches take arguments. */ 756 757#define DEFAULT_WORD_SWITCH_TAKES_ARG(STR) \ 758 (!strcmp (STR, "Tdata") || !strcmp (STR, "Ttext") \ 759 || !strcmp (STR, "Tbss") || !strcmp (STR, "include") \ 760 || !strcmp (STR, "imacros") || !strcmp (STR, "aux-info") \ 761 || !strcmp (STR, "idirafter") || !strcmp (STR, "iprefix") \ 762 || !strcmp (STR, "iwithprefix") || !strcmp (STR, "iwithprefixbefore") \ 763 || !strcmp (STR, "isystem") || !strcmp (STR, "-param") \ 764 || !strcmp (STR, "specs") \ 765 || !strcmp (STR, "MF") || !strcmp (STR, "MT") || !strcmp (STR, "MQ")) 766 767#ifndef WORD_SWITCH_TAKES_ARG 768#define WORD_SWITCH_TAKES_ARG(STR) DEFAULT_WORD_SWITCH_TAKES_ARG (STR) 769#endif 770 771#ifdef HAVE_TARGET_EXECUTABLE_SUFFIX 772/* This defines which switches stop a full compilation. */ 773#define DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) \ 774 ((CHAR) == 'c' || (CHAR) == 'S') 775 776#ifndef SWITCH_CURTAILS_COMPILATION 777#define SWITCH_CURTAILS_COMPILATION(CHAR) \ 778 DEFAULT_SWITCH_CURTAILS_COMPILATION(CHAR) 779#endif 780#endif 781 782/* Record the mapping from file suffixes for compilation specs. */ 783 784struct compiler 785{ 786 const char *suffix; /* Use this compiler for input files 787 whose names end in this suffix. */ 788 789 const char *spec; /* To use this compiler, run this spec. */ 790 791 const char *cpp_spec; /* If non-NULL, substitute this spec 792 for `%C', rather than the usual 793 cpp_spec. */ 794}; 795 796/* Pointer to a vector of `struct compiler' that gives the spec for 797 compiling a file, based on its suffix. 798 A file that does not end in any of these suffixes will be passed 799 unchanged to the loader and nothing else will be done to it. 800 801 An entry containing two 0s is used to terminate the vector. 802 803 If multiple entries match a file, the last matching one is used. */ 804 805static struct compiler *compilers; 806 807/* Number of entries in `compilers', not counting the null terminator. */ 808 809static int n_compilers; 810 811/* The default list of file name suffixes and their compilation specs. */ 812 813static const struct compiler default_compilers[] = 814{ 815 /* Add lists of suffixes of known languages here. If those languages 816 were not present when we built the driver, we will hit these copies 817 and be given a more meaningful error than "file not used since 818 linking is not done". */ 819 {".m", "#Objective-C", 0}, {".mi", "#Objective-C", 0}, 820 {".cc", "#C++", 0}, {".cxx", "#C++", 0}, {".cpp", "#C++", 0}, 821 {".cp", "#C++", 0}, {".c++", "#C++", 0}, {".C", "#C++", 0}, 822 {".ii", "#C++", 0}, 823 {".ads", "#Ada", 0}, {".adb", "#Ada", 0}, 824 {".f", "#Fortran", 0}, {".for", "#Fortran", 0}, {".fpp", "#Fortran", 0}, 825 {".F", "#Fortran", 0}, {".FOR", "#Fortran", 0}, {".FPP", "#Fortran", 0}, 826 {".r", "#Ratfor", 0}, 827 {".p", "#Pascal", 0}, {".pas", "#Pascal", 0}, 828 {".java", "#Java", 0}, {".class", "#Java", 0}, 829 {".zip", "#Java", 0}, {".jar", "#Java", 0}, 830 /* Next come the entries for C. */ 831 {".c", "@c", 0}, 832 {"@c", 833 /* cc1 has an integrated ISO C preprocessor. We should invoke the 834 external preprocessor if -save-temps or -traditional is given. */ 835 "%{E|M|MM:%(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)}\ 836 %{!E:%{!M:%{!MM:\ 837 %{save-temps|no-integrated-cpp:%(trad_capable_cpp) -lang-c %{ansi:-std=c89}\ 838 %(cpp_options) %{save-temps:%b.i} %{!save-temps:%g.i} \n\ 839 cc1 -fpreprocessed %{save-temps:%b.i} %{!save-temps:%g.i} %(cc1_options)}\ 840 %{!save-temps:%{!no-integrated-cpp:\ 841 %{traditional|ftraditional|traditional-cpp:\ 842 tradcpp0 -lang-c %{ansi:-std=c89} %(cpp_options) %{!pipe:%g.i} |\n\ 843 cc1 -fpreprocessed %{!pipe:%g.i} %(cc1_options)}\ 844 %{!traditional:%{!ftraditional:%{!traditional-cpp:\ 845 cc1 -lang-c %{ansi:-std=c89} %(cpp_unique_options) %(cc1_options)}}}}}\ 846 %{!fsyntax-only:%(invoke_as)}}}}", 0}, 847 {"-", 848 "%{!E:%e-E required when input is from standard input}\ 849 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0}, 850 {".h", "@c-header", 0}, 851 {"@c-header", 852 "%{!E:%ecompilation of header file requested} \ 853 %(trad_capable_cpp) -lang-c %{ansi:-std=c89} %(cpp_options)", 0}, 854 {".i", "@cpp-output", 0}, 855 {"@cpp-output", 856 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0}, 857 {".s", "@assembler", 0}, 858 {"@assembler", 859 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0}, 860 {".S", "@assembler-with-cpp", 0}, 861 {"@assembler-with-cpp", 862 "%(trad_capable_cpp) -lang-asm %(cpp_options)\ 863 %{!M:%{!MM:%{!E:%{!S:-o %{|!pipe:%g.s} |\n\ 864 as %(asm_debug) %(asm_options) %{!pipe:%g.s} %A }}}}", 0}, 865#include "specs.h" 866 /* Mark end of table */ 867 {0, 0, 0} 868}; 869 870/* Number of elements in default_compilers, not counting the terminator. */ 871 872static int n_default_compilers 873 = (sizeof default_compilers / sizeof (struct compiler)) - 1; 874 875/* A vector of options to give to the linker. 876 These options are accumulated by %x, 877 and substituted into the linker command with %X. */ 878static int n_linker_options; 879static char **linker_options; 880 881/* A vector of options to give to the assembler. 882 These options are accumulated by -Wa, 883 and substituted into the assembler command with %Y. */ 884static int n_assembler_options; 885static char **assembler_options; 886 887/* A vector of options to give to the preprocessor. 888 These options are accumulated by -Wp, 889 and substituted into the preprocessor command with %Z. */ 890static int n_preprocessor_options; 891static char **preprocessor_options; 892 893/* Define how to map long options into short ones. */ 894 895/* This structure describes one mapping. */ 896struct option_map 897{ 898 /* The long option's name. */ 899 const char *const name; 900 /* The equivalent short option. */ 901 const char *const equivalent; 902 /* Argument info. A string of flag chars; NULL equals no options. 903 a => argument required. 904 o => argument optional. 905 j => join argument to equivalent, making one word. 906 * => require other text after NAME as an argument. */ 907 const char *const arg_info; 908}; 909 910/* This is the table of mappings. Mappings are tried sequentially 911 for each option encountered; the first one that matches, wins. */ 912 913static const struct option_map option_map[] = 914 { 915 {"--all-warnings", "-Wall", 0}, 916 {"--ansi", "-ansi", 0}, 917 {"--assemble", "-S", 0}, 918 {"--assert", "-A", "a"}, 919 {"--classpath", "-fclasspath=", "aj"}, 920 {"--bootclasspath", "-fbootclasspath=", "aj"}, 921 {"--CLASSPATH", "-fclasspath=", "aj"}, 922 {"--comments", "-C", 0}, 923 {"--compile", "-c", 0}, 924 {"--debug", "-g", "oj"}, 925 {"--define-macro", "-D", "aj"}, 926 {"--dependencies", "-M", 0}, 927 {"--dump", "-d", "a"}, 928 {"--dumpbase", "-dumpbase", "a"}, 929 {"--entry", "-e", 0}, 930 {"--extra-warnings", "-W", 0}, 931 {"--for-assembler", "-Wa", "a"}, 932 {"--for-linker", "-Xlinker", "a"}, 933 {"--force-link", "-u", "a"}, 934 {"--imacros", "-imacros", "a"}, 935 {"--include", "-include", "a"}, 936 {"--include-barrier", "-I-", 0}, 937 {"--include-directory", "-I", "aj"}, 938 {"--include-directory-after", "-idirafter", "a"}, 939 {"--include-prefix", "-iprefix", "a"}, 940 {"--include-with-prefix", "-iwithprefix", "a"}, 941 {"--include-with-prefix-before", "-iwithprefixbefore", "a"}, 942 {"--include-with-prefix-after", "-iwithprefix", "a"}, 943 {"--language", "-x", "a"}, 944 {"--library-directory", "-L", "a"}, 945 {"--machine", "-m", "aj"}, 946 {"--machine-", "-m", "*j"}, 947 {"--no-integrated-cpp", "-no-integrated-cpp", 0}, 948 {"--no-line-commands", "-P", 0}, 949 {"--no-precompiled-includes", "-noprecomp", 0}, 950 {"--no-standard-includes", "-nostdinc", 0}, 951 {"--no-standard-libraries", "-nostdlib", 0}, 952 {"--no-warnings", "-w", 0}, 953 {"--optimize", "-O", "oj"}, 954 {"--output", "-o", "a"}, 955 {"--output-class-directory", "-foutput-class-dir=", "ja"}, 956 {"--param", "--param", "a"}, 957 {"--pedantic", "-pedantic", 0}, 958 {"--pedantic-errors", "-pedantic-errors", 0}, 959 {"--pipe", "-pipe", 0}, 960 {"--prefix", "-B", "a"}, 961 {"--preprocess", "-E", 0}, 962 {"--print-search-dirs", "-print-search-dirs", 0}, 963 {"--print-file-name", "-print-file-name=", "aj"}, 964 {"--print-libgcc-file-name", "-print-libgcc-file-name", 0}, 965 {"--print-missing-file-dependencies", "-MG", 0}, 966 {"--print-multi-lib", "-print-multi-lib", 0}, 967 {"--print-multi-directory", "-print-multi-directory", 0}, 968 {"--print-prog-name", "-print-prog-name=", "aj"}, 969 {"--profile", "-p", 0}, 970 {"--profile-blocks", "-a", 0}, 971 {"--quiet", "-q", 0}, 972 {"--resource", "-fcompile-resource=", "aj"}, 973 {"--save-temps", "-save-temps", 0}, 974 {"--shared", "-shared", 0}, 975 {"--silent", "-q", 0}, 976 {"--specs", "-specs=", "aj"}, 977 {"--static", "-static", 0}, 978 {"--std", "-std=", "aj"}, 979 {"--symbolic", "-symbolic", 0}, 980 {"--target", "-b", "a"}, 981 {"--time", "-time", 0}, 982 {"--trace-includes", "-H", 0}, 983 {"--traditional", "-traditional", 0}, 984 {"--traditional-cpp", "-traditional-cpp", 0}, 985 {"--trigraphs", "-trigraphs", 0}, 986 {"--undefine-macro", "-U", "aj"}, 987 {"--use-version", "-V", "a"}, 988 {"--user-dependencies", "-MM", 0}, 989 {"--verbose", "-v", 0}, 990 {"--warn-", "-W", "*j"}, 991 {"--write-dependencies", "-MD", 0}, 992 {"--write-user-dependencies", "-MMD", 0}, 993 {"--", "-f", "*j"} 994 }; 995 996 997#ifdef TARGET_OPTION_TRANSLATE_TABLE 998static const struct { 999 const char *const option_found; 1000 const char *const replacements; 1001} target_option_translations[] = 1002{ 1003 TARGET_OPTION_TRANSLATE_TABLE, 1004 { 0, 0 } 1005}; 1006#endif 1007 1008/* Translate the options described by *ARGCP and *ARGVP. 1009 Make a new vector and store it back in *ARGVP, 1010 and store its length in *ARGVC. */ 1011 1012static void 1013translate_options (argcp, argvp) 1014 int *argcp; 1015 const char *const **argvp; 1016{ 1017 int i; 1018 int argc = *argcp; 1019 const char *const *argv = *argvp; 1020 int newvsize = (argc + 2) * 2 * sizeof (const char *); 1021 const char **newv = 1022 (const char **) xmalloc (newvsize); 1023 int newindex = 0; 1024 1025 i = 0; 1026 newv[newindex++] = argv[i++]; 1027 1028 while (i < argc) 1029 { 1030#ifdef TARGET_OPTION_TRANSLATE_TABLE 1031 int tott_idx; 1032 1033 for (tott_idx = 0; 1034 target_option_translations[tott_idx].option_found; 1035 tott_idx++) 1036 { 1037 if (strcmp (target_option_translations[tott_idx].option_found, 1038 argv[i]) == 0) 1039 { 1040 int spaces = 1; 1041 const char *sp; 1042 char *np; 1043 1044 for (sp = target_option_translations[tott_idx].replacements; 1045 *sp; sp++) 1046 { 1047 if (*sp == ' ') 1048 spaces ++; 1049 } 1050 1051 newvsize += spaces * sizeof (const char *); 1052 newv = (const char **) xrealloc (newv, newvsize); 1053 1054 sp = target_option_translations[tott_idx].replacements; 1055 np = xstrdup (sp); 1056 1057 while (1) 1058 { 1059 while (*np == ' ') 1060 np++; 1061 if (*np == 0) 1062 break; 1063 newv[newindex++] = np; 1064 while (*np != ' ' && *np) 1065 np++; 1066 if (*np == 0) 1067 break; 1068 *np++ = 0; 1069 } 1070 1071 i ++; 1072 break; 1073 } 1074 } 1075 if (target_option_translations[tott_idx].option_found) 1076 continue; 1077#endif 1078 1079 /* Translate -- options. */ 1080 if (argv[i][0] == '-' && argv[i][1] == '-') 1081 { 1082 size_t j; 1083 /* Find a mapping that applies to this option. */ 1084 for (j = 0; j < ARRAY_SIZE (option_map); j++) 1085 { 1086 size_t optlen = strlen (option_map[j].name); 1087 size_t arglen = strlen (argv[i]); 1088 size_t complen = arglen > optlen ? optlen : arglen; 1089 const char *arginfo = option_map[j].arg_info; 1090 1091 if (arginfo == 0) 1092 arginfo = ""; 1093 1094 if (!strncmp (argv[i], option_map[j].name, complen)) 1095 { 1096 const char *arg = 0; 1097 1098 if (arglen < optlen) 1099 { 1100 size_t k; 1101 for (k = j + 1; k < ARRAY_SIZE (option_map); k++) 1102 if (strlen (option_map[k].name) >= arglen 1103 && !strncmp (argv[i], option_map[k].name, arglen)) 1104 { 1105 error ("ambiguous abbreviation %s", argv[i]); 1106 break; 1107 } 1108 1109 if (k != ARRAY_SIZE (option_map)) 1110 break; 1111 } 1112 1113 if (arglen > optlen) 1114 { 1115 /* If the option has an argument, accept that. */ 1116 if (argv[i][optlen] == '=') 1117 arg = argv[i] + optlen + 1; 1118 1119 /* If this mapping requires extra text at end of name, 1120 accept that as "argument". */ 1121 else if (strchr (arginfo, '*') != 0) 1122 arg = argv[i] + optlen; 1123 1124 /* Otherwise, extra text at end means mismatch. 1125 Try other mappings. */ 1126 else 1127 continue; 1128 } 1129 1130 else if (strchr (arginfo, '*') != 0) 1131 { 1132 error ("incomplete `%s' option", option_map[j].name); 1133 break; 1134 } 1135 1136 /* Handle arguments. */ 1137 if (strchr (arginfo, 'a') != 0) 1138 { 1139 if (arg == 0) 1140 { 1141 if (i + 1 == argc) 1142 { 1143 error ("missing argument to `%s' option", 1144 option_map[j].name); 1145 break; 1146 } 1147 1148 arg = argv[++i]; 1149 } 1150 } 1151 else if (strchr (arginfo, '*') != 0) 1152 ; 1153 else if (strchr (arginfo, 'o') == 0) 1154 { 1155 if (arg != 0) 1156 error ("extraneous argument to `%s' option", 1157 option_map[j].name); 1158 arg = 0; 1159 } 1160 1161 /* Store the translation as one argv elt or as two. */ 1162 if (arg != 0 && strchr (arginfo, 'j') != 0) 1163 newv[newindex++] = concat (option_map[j].equivalent, arg, 1164 NULL); 1165 else if (arg != 0) 1166 { 1167 newv[newindex++] = option_map[j].equivalent; 1168 newv[newindex++] = arg; 1169 } 1170 else 1171 newv[newindex++] = option_map[j].equivalent; 1172 1173 break; 1174 } 1175 } 1176 i++; 1177 } 1178 1179 /* Handle old-fashioned options--just copy them through, 1180 with their arguments. */ 1181 else if (argv[i][0] == '-') 1182 { 1183 const char *p = argv[i] + 1; 1184 int c = *p; 1185 int nskip = 1; 1186 1187 if (SWITCH_TAKES_ARG (c) > (p[1] != 0)) 1188 nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0); 1189 else if (WORD_SWITCH_TAKES_ARG (p)) 1190 nskip += WORD_SWITCH_TAKES_ARG (p); 1191 else if ((c == 'B' || c == 'b' || c == 'V' || c == 'x') 1192 && p[1] == 0) 1193 nskip += 1; 1194 else if (! strcmp (p, "Xlinker")) 1195 nskip += 1; 1196 1197 /* Watch out for an option at the end of the command line that 1198 is missing arguments, and avoid skipping past the end of the 1199 command line. */ 1200 if (nskip + i > argc) 1201 nskip = argc - i; 1202 1203 while (nskip > 0) 1204 { 1205 newv[newindex++] = argv[i++]; 1206 nskip--; 1207 } 1208 } 1209 else 1210 /* Ordinary operands, or +e options. */ 1211 newv[newindex++] = argv[i++]; 1212 } 1213 1214 newv[newindex] = 0; 1215 1216 *argvp = newv; 1217 *argcp = newindex; 1218} 1219 1220static char * 1221skip_whitespace (p) 1222 char *p; 1223{ 1224 while (1) 1225 { 1226 /* A fully-blank line is a delimiter in the SPEC file and shouldn't 1227 be considered whitespace. */ 1228 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n') 1229 return p + 1; 1230 else if (*p == '\n' || *p == ' ' || *p == '\t') 1231 p++; 1232 else if (*p == '#') 1233 { 1234 while (*p != '\n') 1235 p++; 1236 p++; 1237 } 1238 else 1239 break; 1240 } 1241 1242 return p; 1243} 1244/* Structures to keep track of prefixes to try when looking for files. */ 1245 1246struct prefix_list 1247{ 1248 const char *prefix; /* String to prepend to the path. */ 1249 struct prefix_list *next; /* Next in linked list. */ 1250 int require_machine_suffix; /* Don't use without machine_suffix. */ 1251 /* 2 means try both machine_suffix and just_machine_suffix. */ 1252 int *used_flag_ptr; /* 1 if a file was found with this prefix. */ 1253 int priority; /* Sort key - priority within list */ 1254}; 1255 1256struct path_prefix 1257{ 1258 struct prefix_list *plist; /* List of prefixes to try */ 1259 int max_len; /* Max length of a prefix in PLIST */ 1260 const char *name; /* Name of this list (used in config stuff) */ 1261}; 1262 1263/* List of prefixes to try when looking for executables. */ 1264 1265static struct path_prefix exec_prefixes = { 0, 0, "exec" }; 1266 1267/* List of prefixes to try when looking for startup (crt0) files. */ 1268 1269static struct path_prefix startfile_prefixes = { 0, 0, "startfile" }; 1270 1271/* List of prefixes to try when looking for include files. */ 1272 1273static struct path_prefix include_prefixes = { 0, 0, "include" }; 1274 1275/* Suffix to attach to directories searched for commands. 1276 This looks like `MACHINE/VERSION/'. */ 1277 1278static const char *machine_suffix = 0; 1279 1280/* Suffix to attach to directories searched for commands. 1281 This is just `MACHINE/'. */ 1282 1283static const char *just_machine_suffix = 0; 1284 1285/* Adjusted value of GCC_EXEC_PREFIX envvar. */ 1286 1287static const char *gcc_exec_prefix; 1288 1289/* Default prefixes to attach to command names. */ 1290 1291#ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */ 1292#undef MD_EXEC_PREFIX 1293#undef MD_STARTFILE_PREFIX 1294#undef MD_STARTFILE_PREFIX_1 1295#endif 1296 1297/* If no prefixes defined, use the null string, which will disable them. */ 1298#ifndef MD_EXEC_PREFIX 1299#define MD_EXEC_PREFIX "" 1300#endif 1301#ifndef MD_STARTFILE_PREFIX 1302#define MD_STARTFILE_PREFIX "" 1303#endif 1304#ifndef MD_STARTFILE_PREFIX_1 1305#define MD_STARTFILE_PREFIX_1 "" 1306#endif 1307 1308/* Supply defaults for the standard prefixes. */ 1309 1310#ifndef STANDARD_EXEC_PREFIX 1311#define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/" 1312#endif 1313#ifndef STANDARD_STARTFILE_PREFIX 1314#define STANDARD_STARTFILE_PREFIX "/usr/local/lib/" 1315#endif 1316#ifndef TOOLDIR_BASE_PREFIX 1317#define TOOLDIR_BASE_PREFIX "/usr/local/" 1318#endif 1319#ifndef FREEBSD_NATIVE 1320#ifndef STANDARD_BINDIR_PREFIX 1321#define STANDARD_BINDIR_PREFIX "/usr/local/bin" 1322#endif 1323#endif /* not FREEBSD_NATIVE */ 1324 1325static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX; 1326static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/"; 1327static const char *md_exec_prefix = MD_EXEC_PREFIX; 1328 1329static const char *md_startfile_prefix = MD_STARTFILE_PREFIX; 1330static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1; 1331static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX; 1332static const char *const standard_startfile_prefix_1 = "/lib/"; 1333static const char *const standard_startfile_prefix_2 = "/usr/lib/"; 1334 1335static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX; 1336static const char *tooldir_prefix; 1337 1338#ifndef FREEBSD_NATIVE 1339static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX; 1340#endif /* not FREEBSD_NATIVE */ 1341 1342/* Subdirectory to use for locating libraries. Set by 1343 set_multilib_dir based on the compilation options. */ 1344 1345static const char *multilib_dir; 1346 1347/* Structure to keep track of the specs that have been defined so far. 1348 These are accessed using %(specname) or %[specname] in a compiler 1349 or link spec. */ 1350 1351struct spec_list 1352{ 1353 /* The following 2 fields must be first */ 1354 /* to allow EXTRA_SPECS to be initialized */ 1355 const char *name; /* name of the spec. */ 1356 const char *ptr; /* available ptr if no static pointer */ 1357 1358 /* The following fields are not initialized */ 1359 /* by EXTRA_SPECS */ 1360 const char **ptr_spec; /* pointer to the spec itself. */ 1361 struct spec_list *next; /* Next spec in linked list. */ 1362 int name_len; /* length of the name */ 1363 int alloc_p; /* whether string was allocated */ 1364}; 1365 1366#define INIT_STATIC_SPEC(NAME,PTR) \ 1367{ NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 } 1368 1369/* List of statically defined specs. */ 1370static struct spec_list static_specs[] = 1371{ 1372 INIT_STATIC_SPEC ("asm", &asm_spec), 1373 INIT_STATIC_SPEC ("asm_debug", &asm_debug), 1374 INIT_STATIC_SPEC ("asm_final", &asm_final_spec), 1375 INIT_STATIC_SPEC ("asm_options", &asm_options), 1376 INIT_STATIC_SPEC ("invoke_as", &invoke_as), 1377 INIT_STATIC_SPEC ("cpp", &cpp_spec), 1378 INIT_STATIC_SPEC ("cpp_options", &cpp_options), 1379 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options), 1380 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp), 1381 INIT_STATIC_SPEC ("cc1", &cc1_spec), 1382 INIT_STATIC_SPEC ("cc1_options", &cc1_options), 1383 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec), 1384 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec), 1385 INIT_STATIC_SPEC ("endfile", &endfile_spec), 1386 INIT_STATIC_SPEC ("link", &link_spec), 1387 INIT_STATIC_SPEC ("lib", &lib_spec), 1388 INIT_STATIC_SPEC ("libgcc", &libgcc_spec), 1389 INIT_STATIC_SPEC ("startfile", &startfile_spec), 1390 INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces), 1391 INIT_STATIC_SPEC ("predefines", &cpp_predefines), 1392 INIT_STATIC_SPEC ("cross_compile", &cross_compile), 1393 INIT_STATIC_SPEC ("version", &compiler_version), 1394 INIT_STATIC_SPEC ("multilib", &multilib_select), 1395 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults), 1396 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra), 1397 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches), 1398 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions), 1399 INIT_STATIC_SPEC ("linker", &linker_name_spec), 1400 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec), 1401 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix), 1402 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix), 1403 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1), 1404}; 1405 1406#ifdef EXTRA_SPECS /* additional specs needed */ 1407/* Structure to keep track of just the first two args of a spec_list. 1408 That is all that the EXTRA_SPECS macro gives us. */ 1409struct spec_list_1 1410{ 1411 const char *const name; 1412 const char *const ptr; 1413}; 1414 1415static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS }; 1416static struct spec_list *extra_specs = (struct spec_list *) 0; 1417#endif 1418 1419/* List of dynamically allocates specs that have been defined so far. */ 1420 1421static struct spec_list *specs = (struct spec_list *) 0; 1422 1423/* Add appropriate libgcc specs to OBSTACK, taking into account 1424 various permutations of -shared-libgcc, -shared, and such. */ 1425 1426#ifdef ENABLE_SHARED_LIBGCC 1427static void 1428init_gcc_specs (obstack, shared_name, static_name, eh_name) 1429 struct obstack *obstack; 1430 const char *shared_name; 1431 const char *static_name; 1432 const char *eh_name; 1433{ 1434 char *buf; 1435 1436 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, 1437 "}%{!static:%{!static-libgcc:", 1438 "%{!shared:%{!shared-libgcc:", static_name, " ", 1439 eh_name, "}%{shared-libgcc:", shared_name, " ", 1440 static_name, "}}%{shared:", 1441#ifdef LINK_EH_SPEC 1442 "%{shared-libgcc:", shared_name, 1443 "}%{!shared-libgcc:", static_name, "}", 1444#else 1445 shared_name, 1446#endif 1447 "}}}", NULL); 1448 1449 obstack_grow (obstack, buf, strlen (buf)); 1450 free (buf); 1451} 1452#endif /* ENABLE_SHARED_LIBGCC */ 1453 1454/* Initialize the specs lookup routines. */ 1455 1456static void 1457init_spec () 1458{ 1459 struct spec_list *next = (struct spec_list *) 0; 1460 struct spec_list *sl = (struct spec_list *) 0; 1461 int i; 1462 1463 if (specs) 1464 return; /* Already initialized. */ 1465 1466 if (verbose_flag) 1467 notice ("Using built-in specs.\n"); 1468 1469#ifdef EXTRA_SPECS 1470 extra_specs = (struct spec_list *) 1471 xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1)); 1472 1473 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--) 1474 { 1475 sl = &extra_specs[i]; 1476 sl->name = extra_specs_1[i].name; 1477 sl->ptr = extra_specs_1[i].ptr; 1478 sl->next = next; 1479 sl->name_len = strlen (sl->name); 1480 sl->ptr_spec = &sl->ptr; 1481 next = sl; 1482 } 1483#endif 1484 1485 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) 1486 { 1487 sl = &static_specs[i]; 1488 sl->next = next; 1489 next = sl; 1490 } 1491 1492#ifdef ENABLE_SHARED_LIBGCC 1493 /* ??? If neither -shared-libgcc nor --static-libgcc was 1494 seen, then we should be making an educated guess. Some proposed 1495 heuristics for ELF include: 1496 1497 (1) If "-Wl,--export-dynamic", then it's a fair bet that the 1498 program will be doing dynamic loading, which will likely 1499 need the shared libgcc. 1500 1501 (2) If "-ldl", then it's also a fair bet that we're doing 1502 dynamic loading. 1503 1504 (3) For each ET_DYN we're linking against (either through -lfoo 1505 or /some/path/foo.so), check to see whether it or one of 1506 its dependencies depends on a shared libgcc. 1507 1508 (4) If "-shared" 1509 1510 If the runtime is fixed to look for program headers instead 1511 of calling __register_frame_info at all, for each object, 1512 use the shared libgcc if any EH symbol referenced. 1513 1514 If crtstuff is fixed to not invoke __register_frame_info 1515 automatically, for each object, use the shared libgcc if 1516 any non-empty unwind section found. 1517 1518 Doing any of this probably requires invoking an external program to 1519 do the actual object file scanning. */ 1520 { 1521 const char *p = libgcc_spec; 1522 int in_sep = 1; 1523 1524 /* Transform the extant libgcc_spec into one that uses the shared libgcc 1525 when given the proper command line arguments. */ 1526 while (*p) 1527 { 1528 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0) 1529 { 1530 init_gcc_specs (&obstack, 1531#ifdef NO_SHARED_LIBGCC_MULTILIB 1532 "-lgcc_s" 1533#else 1534 "-lgcc_s%M" 1535#endif 1536 , 1537 "-lgcc", 1538 "-lgcc_eh"); 1539 p += 5; 1540 in_sep = 0; 1541 } 1542 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0) 1543 { 1544 /* Ug. We don't know shared library extensions. Hope that 1545 systems that use this form don't do shared libraries. */ 1546 init_gcc_specs (&obstack, 1547#ifdef NO_SHARED_LIBGCC_MULTILIB 1548 "-lgcc_s" 1549#else 1550 "-lgcc_s%M" 1551#endif 1552 , 1553 "libgcc.a%s", 1554 "libgcc_eh.a%s"); 1555 p += 10; 1556 in_sep = 0; 1557 } 1558 else 1559 { 1560 obstack_1grow (&obstack, *p); 1561 in_sep = (*p == ' '); 1562 p += 1; 1563 } 1564 } 1565 1566 obstack_1grow (&obstack, '\0'); 1567 libgcc_spec = obstack_finish (&obstack); 1568 } 1569#endif 1570#ifdef USE_AS_TRADITIONAL_FORMAT 1571 /* Prepend "--traditional-format" to whatever asm_spec we had before. */ 1572 { 1573 static const char tf[] = "--traditional-format "; 1574 obstack_grow (&obstack, tf, sizeof(tf) - 1); 1575 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec)); 1576 asm_spec = obstack_finish (&obstack); 1577 } 1578#endif 1579#ifdef LINK_EH_SPEC 1580 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */ 1581 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1); 1582 obstack_grow0 (&obstack, link_spec, strlen (link_spec)); 1583 link_spec = obstack_finish (&obstack); 1584#endif 1585 1586 specs = sl; 1587} 1588 1589/* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is 1590 removed; If the spec starts with a + then SPEC is added to the end of the 1591 current spec. */ 1592 1593static void 1594set_spec (name, spec) 1595 const char *name; 1596 const char *spec; 1597{ 1598 struct spec_list *sl; 1599 const char *old_spec; 1600 int name_len = strlen (name); 1601 int i; 1602 1603 /* If this is the first call, initialize the statically allocated specs. */ 1604 if (!specs) 1605 { 1606 struct spec_list *next = (struct spec_list *) 0; 1607 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) 1608 { 1609 sl = &static_specs[i]; 1610 sl->next = next; 1611 next = sl; 1612 } 1613 specs = sl; 1614 } 1615 1616 /* See if the spec already exists. */ 1617 for (sl = specs; sl; sl = sl->next) 1618 if (name_len == sl->name_len && !strcmp (sl->name, name)) 1619 break; 1620 1621 if (!sl) 1622 { 1623 /* Not found - make it. */ 1624 sl = (struct spec_list *) xmalloc (sizeof (struct spec_list)); 1625 sl->name = xstrdup (name); 1626 sl->name_len = name_len; 1627 sl->ptr_spec = &sl->ptr; 1628 sl->alloc_p = 0; 1629 *(sl->ptr_spec) = ""; 1630 sl->next = specs; 1631 specs = sl; 1632 } 1633 1634 old_spec = *(sl->ptr_spec); 1635 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1])) 1636 ? concat (old_spec, spec + 1, NULL) 1637 : xstrdup (spec)); 1638 1639#ifdef DEBUG_SPECS 1640 if (verbose_flag) 1641 notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec)); 1642#endif 1643 1644 /* Free the old spec. */ 1645 if (old_spec && sl->alloc_p) 1646 free ((PTR) old_spec); 1647 1648 sl->alloc_p = 1; 1649} 1650 1651/* Accumulate a command (program name and args), and run it. */ 1652 1653/* Vector of pointers to arguments in the current line of specifications. */ 1654 1655static const char **argbuf; 1656 1657/* Number of elements allocated in argbuf. */ 1658 1659static int argbuf_length; 1660 1661/* Number of elements in argbuf currently in use (containing args). */ 1662 1663static int argbuf_index; 1664 1665/* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated 1666 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for 1667 it here. */ 1668 1669static struct temp_name { 1670 const char *suffix; /* suffix associated with the code. */ 1671 int length; /* strlen (suffix). */ 1672 int unique; /* Indicates whether %g or %u/%U was used. */ 1673 const char *filename; /* associated filename. */ 1674 int filename_length; /* strlen (filename). */ 1675 struct temp_name *next; 1676} *temp_names; 1677 1678/* Number of commands executed so far. */ 1679 1680static int execution_count; 1681 1682/* Number of commands that exited with a signal. */ 1683 1684static int signal_count; 1685 1686/* Name with which this program was invoked. */ 1687 1688static const char *programname; 1689 1690/* Clear out the vector of arguments (after a command is executed). */ 1691 1692static void 1693clear_args () 1694{ 1695 argbuf_index = 0; 1696} 1697 1698/* Add one argument to the vector at the end. 1699 This is done when a space is seen or at the end of the line. 1700 If DELETE_ALWAYS is nonzero, the arg is a filename 1701 and the file should be deleted eventually. 1702 If DELETE_FAILURE is nonzero, the arg is a filename 1703 and the file should be deleted if this compilation fails. */ 1704 1705static void 1706store_arg (arg, delete_always, delete_failure) 1707 const char *arg; 1708 int delete_always, delete_failure; 1709{ 1710 if (argbuf_index + 1 == argbuf_length) 1711 argbuf 1712 = (const char **) xrealloc (argbuf, 1713 (argbuf_length *= 2) * sizeof (const char *)); 1714 1715 argbuf[argbuf_index++] = arg; 1716 argbuf[argbuf_index] = 0; 1717 1718 if (delete_always || delete_failure) 1719 record_temp_file (arg, delete_always, delete_failure); 1720} 1721 1722/* Load specs from a file name named FILENAME, replacing occurrences of 1723 various different types of line-endings, \r\n, \n\r and just \r, with 1724 a single \n. */ 1725 1726static char * 1727load_specs (filename) 1728 const char *filename; 1729{ 1730 int desc; 1731 int readlen; 1732 struct stat statbuf; 1733 char *buffer; 1734 char *buffer_p; 1735 char *specs; 1736 char *specs_p; 1737 1738 if (verbose_flag) 1739 notice ("Reading specs from %s\n", filename); 1740 1741 /* Open and stat the file. */ 1742 desc = open (filename, O_RDONLY, 0); 1743 if (desc < 0) 1744 pfatal_with_name (filename); 1745 if (stat (filename, &statbuf) < 0) 1746 pfatal_with_name (filename); 1747 1748 /* Read contents of file into BUFFER. */ 1749 buffer = xmalloc ((unsigned) statbuf.st_size + 1); 1750 readlen = read (desc, buffer, (unsigned) statbuf.st_size); 1751 if (readlen < 0) 1752 pfatal_with_name (filename); 1753 buffer[readlen] = 0; 1754 close (desc); 1755 1756 specs = xmalloc (readlen + 1); 1757 specs_p = specs; 1758 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++) 1759 { 1760 int skip = 0; 1761 char c = *buffer_p; 1762 if (c == '\r') 1763 { 1764 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */ 1765 skip = 1; 1766 else if (*(buffer_p + 1) == '\n') /* \r\n */ 1767 skip = 1; 1768 else /* \r */ 1769 c = '\n'; 1770 } 1771 if (! skip) 1772 *specs_p++ = c; 1773 } 1774 *specs_p = '\0'; 1775 1776 free (buffer); 1777 return (specs); 1778} 1779 1780/* Read compilation specs from a file named FILENAME, 1781 replacing the default ones. 1782 1783 A suffix which starts with `*' is a definition for 1784 one of the machine-specific sub-specs. The "suffix" should be 1785 *asm, *cc1, *cpp, *link, *startfile, etc. 1786 The corresponding spec is stored in asm_spec, etc., 1787 rather than in the `compilers' vector. 1788 1789 Anything invalid in the file is a fatal error. */ 1790 1791static void 1792read_specs (filename, main_p) 1793 const char *filename; 1794 int main_p; 1795{ 1796 char *buffer; 1797 char *p; 1798 1799 buffer = load_specs (filename); 1800 1801 /* Scan BUFFER for specs, putting them in the vector. */ 1802 p = buffer; 1803 while (1) 1804 { 1805 char *suffix; 1806 char *spec; 1807 char *in, *out, *p1, *p2, *p3; 1808 1809 /* Advance P in BUFFER to the next nonblank nocomment line. */ 1810 p = skip_whitespace (p); 1811 if (*p == 0) 1812 break; 1813 1814 /* Is this a special command that starts with '%'? */ 1815 /* Don't allow this for the main specs file, since it would 1816 encourage people to overwrite it. */ 1817 if (*p == '%' && !main_p) 1818 { 1819 p1 = p; 1820 while (*p && *p != '\n') 1821 p++; 1822 1823 /* Skip '\n'. */ 1824 p++; 1825 1826 if (!strncmp (p1, "%include", sizeof ("%include") - 1) 1827 && (p1[sizeof "%include" - 1] == ' ' 1828 || p1[sizeof "%include" - 1] == '\t')) 1829 { 1830 char *new_filename; 1831 1832 p1 += sizeof ("%include"); 1833 while (*p1 == ' ' || *p1 == '\t') 1834 p1++; 1835 1836 if (*p1++ != '<' || p[-2] != '>') 1837 fatal ("specs %%include syntax malformed after %ld characters", 1838 (long) (p1 - buffer + 1)); 1839 1840 p[-2] = '\0'; 1841 new_filename = find_a_file (&startfile_prefixes, p1, R_OK); 1842 read_specs (new_filename ? new_filename : p1, FALSE); 1843 continue; 1844 } 1845 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1) 1846 && (p1[sizeof "%include_noerr" - 1] == ' ' 1847 || p1[sizeof "%include_noerr" - 1] == '\t')) 1848 { 1849 char *new_filename; 1850 1851 p1 += sizeof "%include_noerr"; 1852 while (*p1 == ' ' || *p1 == '\t') 1853 p1++; 1854 1855 if (*p1++ != '<' || p[-2] != '>') 1856 fatal ("specs %%include syntax malformed after %ld characters", 1857 (long) (p1 - buffer + 1)); 1858 1859 p[-2] = '\0'; 1860 new_filename = find_a_file (&startfile_prefixes, p1, R_OK); 1861 if (new_filename) 1862 read_specs (new_filename, FALSE); 1863 else if (verbose_flag) 1864 notice ("could not find specs file %s\n", p1); 1865 continue; 1866 } 1867 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1) 1868 && (p1[sizeof "%rename" - 1] == ' ' 1869 || p1[sizeof "%rename" - 1] == '\t')) 1870 { 1871 int name_len; 1872 struct spec_list *sl; 1873 1874 /* Get original name */ 1875 p1 += sizeof "%rename"; 1876 while (*p1 == ' ' || *p1 == '\t') 1877 p1++; 1878 1879 if (! ISALPHA ((unsigned char) *p1)) 1880 fatal ("specs %%rename syntax malformed after %ld characters", 1881 (long) (p1 - buffer)); 1882 1883 p2 = p1; 1884 while (*p2 && !ISSPACE ((unsigned char) *p2)) 1885 p2++; 1886 1887 if (*p2 != ' ' && *p2 != '\t') 1888 fatal ("specs %%rename syntax malformed after %ld characters", 1889 (long) (p2 - buffer)); 1890 1891 name_len = p2 - p1; 1892 *p2++ = '\0'; 1893 while (*p2 == ' ' || *p2 == '\t') 1894 p2++; 1895 1896 if (! ISALPHA ((unsigned char) *p2)) 1897 fatal ("specs %%rename syntax malformed after %ld characters", 1898 (long) (p2 - buffer)); 1899 1900 /* Get new spec name. */ 1901 p3 = p2; 1902 while (*p3 && !ISSPACE ((unsigned char) *p3)) 1903 p3++; 1904 1905 if (p3 != p - 1) 1906 fatal ("specs %%rename syntax malformed after %ld characters", 1907 (long) (p3 - buffer)); 1908 *p3 = '\0'; 1909 1910 for (sl = specs; sl; sl = sl->next) 1911 if (name_len == sl->name_len && !strcmp (sl->name, p1)) 1912 break; 1913 1914 if (!sl) 1915 fatal ("specs %s spec was not found to be renamed", p1); 1916 1917 if (strcmp (p1, p2) == 0) 1918 continue; 1919 1920 if (verbose_flag) 1921 { 1922 notice ("rename spec %s to %s\n", p1, p2); 1923#ifdef DEBUG_SPECS 1924 notice ("spec is '%s'\n\n", *(sl->ptr_spec)); 1925#endif 1926 } 1927 1928 set_spec (p2, *(sl->ptr_spec)); 1929 if (sl->alloc_p) 1930 free ((PTR) *(sl->ptr_spec)); 1931 1932 *(sl->ptr_spec) = ""; 1933 sl->alloc_p = 0; 1934 continue; 1935 } 1936 else 1937 fatal ("specs unknown %% command after %ld characters", 1938 (long) (p1 - buffer)); 1939 } 1940 1941 /* Find the colon that should end the suffix. */ 1942 p1 = p; 1943 while (*p1 && *p1 != ':' && *p1 != '\n') 1944 p1++; 1945 1946 /* The colon shouldn't be missing. */ 1947 if (*p1 != ':') 1948 fatal ("specs file malformed after %ld characters", 1949 (long) (p1 - buffer)); 1950 1951 /* Skip back over trailing whitespace. */ 1952 p2 = p1; 1953 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) 1954 p2--; 1955 1956 /* Copy the suffix to a string. */ 1957 suffix = save_string (p, p2 - p); 1958 /* Find the next line. */ 1959 p = skip_whitespace (p1 + 1); 1960 if (p[1] == 0) 1961 fatal ("specs file malformed after %ld characters", 1962 (long) (p - buffer)); 1963 1964 p1 = p; 1965 /* Find next blank line or end of string. */ 1966 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0'))) 1967 p1++; 1968 1969 /* Specs end at the blank line and do not include the newline. */ 1970 spec = save_string (p, p1 - p); 1971 p = p1; 1972 1973 /* Delete backslash-newline sequences from the spec. */ 1974 in = spec; 1975 out = spec; 1976 while (*in != 0) 1977 { 1978 if (in[0] == '\\' && in[1] == '\n') 1979 in += 2; 1980 else if (in[0] == '#') 1981 while (*in && *in != '\n') 1982 in++; 1983 1984 else 1985 *out++ = *in++; 1986 } 1987 *out = 0; 1988 1989 if (suffix[0] == '*') 1990 { 1991 if (! strcmp (suffix, "*link_command")) 1992 link_command_spec = spec; 1993 else 1994 set_spec (suffix + 1, spec); 1995 } 1996 else 1997 { 1998 /* Add this pair to the vector. */ 1999 compilers 2000 = ((struct compiler *) 2001 xrealloc (compilers, 2002 (n_compilers + 2) * sizeof (struct compiler))); 2003 2004 compilers[n_compilers].suffix = suffix; 2005 compilers[n_compilers].spec = spec; 2006 n_compilers++; 2007 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]); 2008 } 2009 2010 if (*suffix == 0) 2011 link_command_spec = spec; 2012 } 2013 2014 if (link_command_spec == 0) 2015 fatal ("spec file has no spec for linking"); 2016} 2017 2018/* Record the names of temporary files we tell compilers to write, 2019 and delete them at the end of the run. */ 2020 2021/* This is the common prefix we use to make temp file names. 2022 It is chosen once for each run of this program. 2023 It is substituted into a spec by %g or %j. 2024 Thus, all temp file names contain this prefix. 2025 In practice, all temp file names start with this prefix. 2026 2027 This prefix comes from the envvar TMPDIR if it is defined; 2028 otherwise, from the P_tmpdir macro if that is defined; 2029 otherwise, in /usr/tmp or /tmp; 2030 or finally the current directory if all else fails. */ 2031 2032static const char *temp_filename; 2033 2034/* Length of the prefix. */ 2035 2036static int temp_filename_length; 2037 2038/* Define the list of temporary files to delete. */ 2039 2040struct temp_file 2041{ 2042 const char *name; 2043 struct temp_file *next; 2044}; 2045 2046/* Queue of files to delete on success or failure of compilation. */ 2047static struct temp_file *always_delete_queue; 2048/* Queue of files to delete on failure of compilation. */ 2049static struct temp_file *failure_delete_queue; 2050 2051/* Record FILENAME as a file to be deleted automatically. 2052 ALWAYS_DELETE nonzero means delete it if all compilation succeeds; 2053 otherwise delete it in any case. 2054 FAIL_DELETE nonzero means delete it if a compilation step fails; 2055 otherwise delete it in any case. */ 2056 2057void 2058record_temp_file (filename, always_delete, fail_delete) 2059 const char *filename; 2060 int always_delete; 2061 int fail_delete; 2062{ 2063 char *const name = xstrdup (filename); 2064 2065 if (always_delete) 2066 { 2067 struct temp_file *temp; 2068 for (temp = always_delete_queue; temp; temp = temp->next) 2069 if (! strcmp (name, temp->name)) 2070 goto already1; 2071 2072 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file)); 2073 temp->next = always_delete_queue; 2074 temp->name = name; 2075 always_delete_queue = temp; 2076 2077 already1:; 2078 } 2079 2080 if (fail_delete) 2081 { 2082 struct temp_file *temp; 2083 for (temp = failure_delete_queue; temp; temp = temp->next) 2084 if (! strcmp (name, temp->name)) 2085 goto already2; 2086 2087 temp = (struct temp_file *) xmalloc (sizeof (struct temp_file)); 2088 temp->next = failure_delete_queue; 2089 temp->name = name; 2090 failure_delete_queue = temp; 2091 2092 already2:; 2093 } 2094} 2095 2096/* Delete all the temporary files whose names we previously recorded. */ 2097 2098static void 2099delete_if_ordinary (name) 2100 const char *name; 2101{ 2102 struct stat st; 2103#ifdef DEBUG 2104 int i, c; 2105 2106 printf ("Delete %s? (y or n) ", name); 2107 fflush (stdout); 2108 i = getchar (); 2109 if (i != '\n') 2110 while ((c = getchar ()) != '\n' && c != EOF) 2111 ; 2112 2113 if (i == 'y' || i == 'Y') 2114#endif /* DEBUG */ 2115 if (stat (name, &st) >= 0 && S_ISREG (st.st_mode)) 2116 if (unlink (name) < 0) 2117 if (verbose_flag) 2118 perror_with_name (name); 2119} 2120 2121static void 2122delete_temp_files () 2123{ 2124 struct temp_file *temp; 2125 2126 for (temp = always_delete_queue; temp; temp = temp->next) 2127 delete_if_ordinary (temp->name); 2128 always_delete_queue = 0; 2129} 2130 2131/* Delete all the files to be deleted on error. */ 2132 2133static void 2134delete_failure_queue () 2135{ 2136 struct temp_file *temp; 2137 2138 for (temp = failure_delete_queue; temp; temp = temp->next) 2139 delete_if_ordinary (temp->name); 2140} 2141 2142static void 2143clear_failure_queue () 2144{ 2145 failure_delete_queue = 0; 2146} 2147 2148/* Build a list of search directories from PATHS. 2149 PREFIX is a string to prepend to the list. 2150 If CHECK_DIR_P is non-zero we ensure the directory exists. 2151 This is used mostly by putenv_from_prefixes so we use `collect_obstack'. 2152 It is also used by the --print-search-dirs flag. */ 2153 2154static char * 2155build_search_list (paths, prefix, check_dir_p) 2156 struct path_prefix *paths; 2157 const char *prefix; 2158 int check_dir_p; 2159{ 2160 int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0; 2161 int just_suffix_len 2162 = (just_machine_suffix) ? strlen (just_machine_suffix) : 0; 2163 int first_time = TRUE; 2164 struct prefix_list *pprefix; 2165 2166 obstack_grow (&collect_obstack, prefix, strlen (prefix)); 2167 obstack_1grow (&collect_obstack, '='); 2168 2169 for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next) 2170 { 2171 int len = strlen (pprefix->prefix); 2172 2173 if (machine_suffix 2174 && (! check_dir_p 2175 || is_directory (pprefix->prefix, machine_suffix, 0))) 2176 { 2177 if (!first_time) 2178 obstack_1grow (&collect_obstack, PATH_SEPARATOR); 2179 2180 first_time = FALSE; 2181 obstack_grow (&collect_obstack, pprefix->prefix, len); 2182 obstack_grow (&collect_obstack, machine_suffix, suffix_len); 2183 } 2184 2185 if (just_machine_suffix 2186 && pprefix->require_machine_suffix == 2 2187 && (! check_dir_p 2188 || is_directory (pprefix->prefix, just_machine_suffix, 0))) 2189 { 2190 if (! first_time) 2191 obstack_1grow (&collect_obstack, PATH_SEPARATOR); 2192 2193 first_time = FALSE; 2194 obstack_grow (&collect_obstack, pprefix->prefix, len); 2195 obstack_grow (&collect_obstack, just_machine_suffix, 2196 just_suffix_len); 2197 } 2198 2199 if (! pprefix->require_machine_suffix) 2200 { 2201 if (! first_time) 2202 obstack_1grow (&collect_obstack, PATH_SEPARATOR); 2203 2204 first_time = FALSE; 2205 obstack_grow (&collect_obstack, pprefix->prefix, len); 2206 } 2207 } 2208 2209 obstack_1grow (&collect_obstack, '\0'); 2210 return obstack_finish (&collect_obstack); 2211} 2212 2213/* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables 2214 for collect. */ 2215 2216static void 2217putenv_from_prefixes (paths, env_var) 2218 struct path_prefix *paths; 2219 const char *env_var; 2220{ 2221 putenv (build_search_list (paths, env_var, 1)); 2222} 2223 2224#ifndef VMS 2225 2226/* FIXME: the location independence code for VMS is hairier than this, 2227 and hasn't been written. */ 2228 2229/* Split a filename into component directories. */ 2230 2231static char ** 2232split_directories (name, ptr_num_dirs) 2233 const char *name; 2234 int *ptr_num_dirs; 2235{ 2236 int num_dirs = 0; 2237 char **dirs; 2238 const char *p, *q; 2239 int ch; 2240 2241 /* Count the number of directories. Special case MSDOS disk names as part 2242 of the initial directory. */ 2243 p = name; 2244#ifdef HAVE_DOS_BASED_FILE_SYSTEM 2245 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2])) 2246 { 2247 p += 3; 2248 num_dirs++; 2249 } 2250#endif /* HAVE_DOS_BASED_FILE_SYSTEM */ 2251 2252 while ((ch = *p++) != '\0') 2253 { 2254 if (IS_DIR_SEPARATOR (ch)) 2255 { 2256 num_dirs++; 2257 while (IS_DIR_SEPARATOR (*p)) 2258 p++; 2259 } 2260 } 2261 2262 dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2)); 2263 2264 /* Now copy the directory parts. */ 2265 num_dirs = 0; 2266 p = name; 2267#ifdef HAVE_DOS_BASED_FILE_SYSTEM 2268 if (name[1] == ':' && IS_DIR_SEPARATOR (name[2])) 2269 { 2270 dirs[num_dirs++] = save_string (p, 3); 2271 p += 3; 2272 } 2273#endif /* HAVE_DOS_BASED_FILE_SYSTEM */ 2274 2275 q = p; 2276 while ((ch = *p++) != '\0') 2277 { 2278 if (IS_DIR_SEPARATOR (ch)) 2279 { 2280 while (IS_DIR_SEPARATOR (*p)) 2281 p++; 2282 2283 dirs[num_dirs++] = save_string (q, p - q); 2284 q = p; 2285 } 2286 } 2287 2288 if (p - 1 - q > 0) 2289 dirs[num_dirs++] = save_string (q, p - 1 - q); 2290 2291 dirs[num_dirs] = NULL; 2292 if (ptr_num_dirs) 2293 *ptr_num_dirs = num_dirs; 2294 2295 return dirs; 2296} 2297 2298/* Release storage held by split directories. */ 2299 2300static void 2301free_split_directories (dirs) 2302 char **dirs; 2303{ 2304 int i = 0; 2305 2306 while (dirs[i] != NULL) 2307 free (dirs[i++]); 2308 2309 free ((char *) dirs); 2310} 2311 2312/* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets 2313 to PREFIX starting with the directory portion of PROGNAME and a relative 2314 pathname of the difference between BIN_PREFIX and PREFIX. 2315 2316 For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is 2317 /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this 2318 function will return /red/green/blue/../omega. 2319 2320 If no relative prefix can be found, return NULL. */ 2321 2322static char * 2323make_relative_prefix (progname, bin_prefix, prefix) 2324 const char *progname; 2325 const char *bin_prefix; 2326 const char *prefix; 2327{ 2328 char **prog_dirs, **bin_dirs, **prefix_dirs; 2329 int prog_num, bin_num, prefix_num, std_loc_p; 2330 int i, n, common; 2331 2332 prog_dirs = split_directories (progname, &prog_num); 2333 bin_dirs = split_directories (bin_prefix, &bin_num); 2334 2335 /* If there is no full pathname, try to find the program by checking in each 2336 of the directories specified in the PATH environment variable. */ 2337 if (prog_num == 1) 2338 { 2339 char *temp; 2340 2341 GET_ENV_PATH_LIST (temp, "PATH"); 2342 if (temp) 2343 { 2344 char *startp, *endp, *nstore; 2345 size_t prefixlen = strlen (temp) + 1; 2346 if (prefixlen < 2) 2347 prefixlen = 2; 2348 2349 nstore = (char *) alloca (prefixlen + strlen (progname) + 1); 2350 2351 startp = endp = temp; 2352 while (1) 2353 { 2354 if (*endp == PATH_SEPARATOR || *endp == 0) 2355 { 2356 if (endp == startp) 2357 { 2358 nstore[0] = '.'; 2359 nstore[1] = DIR_SEPARATOR; 2360 nstore[2] = '\0'; 2361 } 2362 else 2363 { 2364 strncpy (nstore, startp, endp - startp); 2365 if (! IS_DIR_SEPARATOR (endp[-1])) 2366 { 2367 nstore[endp - startp] = DIR_SEPARATOR; 2368 nstore[endp - startp + 1] = 0; 2369 } 2370 else 2371 nstore[endp - startp] = 0; 2372 } 2373 strcat (nstore, progname); 2374 if (! access (nstore, X_OK) 2375#ifdef HAVE_HOST_EXECUTABLE_SUFFIX 2376 || ! access (strcat (nstore, HOST_EXECUTABLE_SUFFIX), X_OK) 2377#endif 2378 ) 2379 { 2380 free_split_directories (prog_dirs); 2381 progname = nstore; 2382 prog_dirs = split_directories (progname, &prog_num); 2383 break; 2384 } 2385 2386 if (*endp == 0) 2387 break; 2388 endp = startp = endp + 1; 2389 } 2390 else 2391 endp++; 2392 } 2393 } 2394 } 2395 2396 /* Remove the program name from comparison of directory names. */ 2397 prog_num--; 2398 2399 /* Determine if the compiler is installed in the standard location, and if 2400 so, we don't need to specify relative directories. Also, if argv[0] 2401 doesn't contain any directory specifiers, there is not much we can do. */ 2402 std_loc_p = 0; 2403 if (prog_num == bin_num) 2404 { 2405 for (i = 0; i < bin_num; i++) 2406 { 2407 if (strcmp (prog_dirs[i], bin_dirs[i]) != 0) 2408 break; 2409 } 2410 2411 if (prog_num <= 0 || i == bin_num) 2412 { 2413 std_loc_p = 1; 2414 free_split_directories (prog_dirs); 2415 free_split_directories (bin_dirs); 2416 prog_dirs = bin_dirs = (char **) 0; 2417 return NULL; 2418 } 2419 } 2420 2421 prefix_dirs = split_directories (prefix, &prefix_num); 2422 2423 /* Find how many directories are in common between bin_prefix & prefix. */ 2424 n = (prefix_num < bin_num) ? prefix_num : bin_num; 2425 for (common = 0; common < n; common++) 2426 { 2427 if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0) 2428 break; 2429 } 2430 2431 /* If there are no common directories, there can be no relative prefix. */ 2432 if (common == 0) 2433 { 2434 free_split_directories (prog_dirs); 2435 free_split_directories (bin_dirs); 2436 free_split_directories (prefix_dirs); 2437 return NULL; 2438 } 2439 2440 /* Build up the pathnames in argv[0]. */ 2441 for (i = 0; i < prog_num; i++) 2442 obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i])); 2443 2444 /* Now build up the ..'s. */ 2445 for (i = common; i < n; i++) 2446 { 2447 obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1); 2448 obstack_1grow (&obstack, DIR_SEPARATOR); 2449 } 2450 2451 /* Put in directories to move over to prefix. */ 2452 for (i = common; i < prefix_num; i++) 2453 obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i])); 2454 2455 free_split_directories (prog_dirs); 2456 free_split_directories (bin_dirs); 2457 free_split_directories (prefix_dirs); 2458 2459 obstack_1grow (&obstack, '\0'); 2460 return obstack_finish (&obstack); 2461} 2462#endif /* VMS */ 2463 2464/* Check whether NAME can be accessed in MODE. This is like access, 2465 except that it never considers directories to be executable. */ 2466 2467static int 2468access_check (name, mode) 2469 const char *name; 2470 int mode; 2471{ 2472 if (mode == X_OK) 2473 { 2474 struct stat st; 2475 2476 if (stat (name, &st) < 0 2477 || S_ISDIR (st.st_mode)) 2478 return -1; 2479 } 2480 2481 return access (name, mode); 2482} 2483 2484/* Search for NAME using the prefix list PREFIXES. MODE is passed to 2485 access to check permissions. 2486 Return 0 if not found, otherwise return its name, allocated with malloc. */ 2487 2488static char * 2489find_a_file (pprefix, name, mode) 2490 struct path_prefix *pprefix; 2491 const char *name; 2492 int mode; 2493{ 2494 char *temp; 2495 const char *const file_suffix = 2496 ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : ""); 2497 struct prefix_list *pl; 2498 int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1; 2499 2500#ifdef DEFAULT_ASSEMBLER 2501 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0) 2502 return xstrdup (DEFAULT_ASSEMBLER); 2503#endif 2504 2505#ifdef DEFAULT_LINKER 2506 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0) 2507 return xstrdup (DEFAULT_LINKER); 2508#endif 2509 2510 if (machine_suffix) 2511 len += strlen (machine_suffix); 2512 2513 temp = xmalloc (len); 2514 2515 /* Determine the filename to execute (special case for absolute paths). */ 2516 2517 if (IS_ABSOLUTE_PATHNAME (name)) 2518 { 2519 if (access (name, mode) == 0) 2520 { 2521 strcpy (temp, name); 2522 return temp; 2523 } 2524 } 2525 else 2526 for (pl = pprefix->plist; pl; pl = pl->next) 2527 { 2528 if (machine_suffix) 2529 { 2530 /* Some systems have a suffix for executable files. 2531 So try appending that first. */ 2532 if (file_suffix[0] != 0) 2533 { 2534 strcpy (temp, pl->prefix); 2535 strcat (temp, machine_suffix); 2536 strcat (temp, name); 2537 strcat (temp, file_suffix); 2538 if (access_check (temp, mode) == 0) 2539 { 2540 if (pl->used_flag_ptr != 0) 2541 *pl->used_flag_ptr = 1; 2542 return temp; 2543 } 2544 } 2545 2546 /* Now try just the name. */ 2547 strcpy (temp, pl->prefix); 2548 strcat (temp, machine_suffix); 2549 strcat (temp, name); 2550 if (access_check (temp, mode) == 0) 2551 { 2552 if (pl->used_flag_ptr != 0) 2553 *pl->used_flag_ptr = 1; 2554 return temp; 2555 } 2556 } 2557 2558 /* Certain prefixes are tried with just the machine type, 2559 not the version. This is used for finding as, ld, etc. */ 2560 if (just_machine_suffix && pl->require_machine_suffix == 2) 2561 { 2562 /* Some systems have a suffix for executable files. 2563 So try appending that first. */ 2564 if (file_suffix[0] != 0) 2565 { 2566 strcpy (temp, pl->prefix); 2567 strcat (temp, just_machine_suffix); 2568 strcat (temp, name); 2569 strcat (temp, file_suffix); 2570 if (access_check (temp, mode) == 0) 2571 { 2572 if (pl->used_flag_ptr != 0) 2573 *pl->used_flag_ptr = 1; 2574 return temp; 2575 } 2576 } 2577 2578 strcpy (temp, pl->prefix); 2579 strcat (temp, just_machine_suffix); 2580 strcat (temp, name); 2581 if (access_check (temp, mode) == 0) 2582 { 2583 if (pl->used_flag_ptr != 0) 2584 *pl->used_flag_ptr = 1; 2585 return temp; 2586 } 2587 } 2588 2589 /* Certain prefixes can't be used without the machine suffix 2590 when the machine or version is explicitly specified. */ 2591 if (! pl->require_machine_suffix) 2592 { 2593 /* Some systems have a suffix for executable files. 2594 So try appending that first. */ 2595 if (file_suffix[0] != 0) 2596 { 2597 strcpy (temp, pl->prefix); 2598 strcat (temp, name); 2599 strcat (temp, file_suffix); 2600 if (access_check (temp, mode) == 0) 2601 { 2602 if (pl->used_flag_ptr != 0) 2603 *pl->used_flag_ptr = 1; 2604 return temp; 2605 } 2606 } 2607 2608 strcpy (temp, pl->prefix); 2609 strcat (temp, name); 2610 if (access_check (temp, mode) == 0) 2611 { 2612 if (pl->used_flag_ptr != 0) 2613 *pl->used_flag_ptr = 1; 2614 return temp; 2615 } 2616 } 2617 } 2618 2619 free (temp); 2620 return 0; 2621} 2622 2623/* Ranking of prefixes in the sort list. -B prefixes are put before 2624 all others. */ 2625 2626enum path_prefix_priority 2627{ 2628 PREFIX_PRIORITY_B_OPT, 2629 PREFIX_PRIORITY_LAST 2630}; 2631 2632/* Add an entry for PREFIX in PLIST. The PLIST is kept in assending 2633 order according to PRIORITY. Within each PRIORITY, new entries are 2634 appended. 2635 2636 If WARN is nonzero, we will warn if no file is found 2637 through this prefix. WARN should point to an int 2638 which will be set to 1 if this entry is used. 2639 2640 COMPONENT is the value to be passed to update_path. 2641 2642 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without 2643 the complete value of machine_suffix. 2644 2 means try both machine_suffix and just_machine_suffix. */ 2645 2646static void 2647add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn) 2648 struct path_prefix *pprefix; 2649 const char *prefix; 2650 const char *component; 2651 /* enum prefix_priority */ int priority; 2652 int require_machine_suffix; 2653 int *warn; 2654{ 2655 struct prefix_list *pl, **prev; 2656 int len; 2657 2658 for (prev = &pprefix->plist; 2659 (*prev) != NULL && (*prev)->priority <= priority; 2660 prev = &(*prev)->next) 2661 ; 2662 2663 /* Keep track of the longest prefix */ 2664 2665 prefix = update_path (prefix, component); 2666 len = strlen (prefix); 2667 if (len > pprefix->max_len) 2668 pprefix->max_len = len; 2669 2670 pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list)); 2671 pl->prefix = prefix; 2672 pl->require_machine_suffix = require_machine_suffix; 2673 pl->used_flag_ptr = warn; 2674 pl->priority = priority; 2675 if (warn) 2676 *warn = 0; 2677 2678 /* Insert after PREV */ 2679 pl->next = (*prev); 2680 (*prev) = pl; 2681} 2682 2683/* Execute the command specified by the arguments on the current line of spec. 2684 When using pipes, this includes several piped-together commands 2685 with `|' between them. 2686 2687 Return 0 if successful, -1 if failed. */ 2688 2689static int 2690execute () 2691{ 2692 int i; 2693 int n_commands; /* # of command. */ 2694 char *string; 2695 struct command 2696 { 2697 const char *prog; /* program name. */ 2698 const char **argv; /* vector of args. */ 2699 int pid; /* pid of process for this command. */ 2700 }; 2701 2702 struct command *commands; /* each command buffer with above info. */ 2703 2704 /* Count # of piped commands. */ 2705 for (n_commands = 1, i = 0; i < argbuf_index; i++) 2706 if (strcmp (argbuf[i], "|") == 0) 2707 n_commands++; 2708 2709 /* Get storage for each command. */ 2710 commands = (struct command *) alloca (n_commands * sizeof (struct command)); 2711 2712 /* Split argbuf into its separate piped processes, 2713 and record info about each one. 2714 Also search for the programs that are to be run. */ 2715 2716 commands[0].prog = argbuf[0]; /* first command. */ 2717 commands[0].argv = &argbuf[0]; 2718 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK); 2719 2720 if (string) 2721 commands[0].argv[0] = string; 2722 2723 for (n_commands = 1, i = 0; i < argbuf_index; i++) 2724 if (strcmp (argbuf[i], "|") == 0) 2725 { /* each command. */ 2726#if defined (__MSDOS__) || defined (OS2) || defined (VMS) 2727 fatal ("-pipe not supported"); 2728#endif 2729 argbuf[i] = 0; /* termination of command args. */ 2730 commands[n_commands].prog = argbuf[i + 1]; 2731 commands[n_commands].argv = &argbuf[i + 1]; 2732 string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK); 2733 if (string) 2734 commands[n_commands].argv[0] = string; 2735 n_commands++; 2736 } 2737 2738 argbuf[argbuf_index] = 0; 2739 2740 /* If -v, print what we are about to do, and maybe query. */ 2741 2742 if (verbose_flag) 2743 { 2744 /* For help listings, put a blank line between sub-processes. */ 2745 if (print_help_list) 2746 fputc ('\n', stderr); 2747 2748 /* Print each piped command as a separate line. */ 2749 for (i = 0; i < n_commands; i++) 2750 { 2751 const char *const *j; 2752 2753 if (verbose_only_flag) 2754 { 2755 for (j = commands[i].argv; *j; j++) 2756 { 2757 const char *p; 2758 fprintf (stderr, " \""); 2759 for (p = *j; *p; ++p) 2760 { 2761 if (*p == '"' || *p == '\\' || *p == '$') 2762 fputc ('\\', stderr); 2763 fputc (*p, stderr); 2764 } 2765 fputc ('"', stderr); 2766 } 2767 } 2768 else 2769 for (j = commands[i].argv; *j; j++) 2770 fprintf (stderr, " %s", *j); 2771 2772 /* Print a pipe symbol after all but the last command. */ 2773 if (i + 1 != n_commands) 2774 fprintf (stderr, " |"); 2775 fprintf (stderr, "\n"); 2776 } 2777 fflush (stderr); 2778 if (verbose_only_flag != 0) 2779 return 0; 2780#ifdef DEBUG 2781 notice ("\nGo ahead? (y or n) "); 2782 fflush (stderr); 2783 i = getchar (); 2784 if (i != '\n') 2785 while (getchar () != '\n') 2786 ; 2787 2788 if (i != 'y' && i != 'Y') 2789 return 0; 2790#endif /* DEBUG */ 2791 } 2792 2793 /* Run each piped subprocess. */ 2794 2795 for (i = 0; i < n_commands; i++) 2796 { 2797 char *errmsg_fmt, *errmsg_arg; 2798 const char *string = commands[i].argv[0]; 2799 2800 /* For some bizarre reason, the second argument of execvp() is 2801 char *const *, not const char *const *. */ 2802 commands[i].pid = pexecute (string, (char *const *) commands[i].argv, 2803 programname, temp_filename, 2804 &errmsg_fmt, &errmsg_arg, 2805 ((i == 0 ? PEXECUTE_FIRST : 0) 2806 | (i + 1 == n_commands ? PEXECUTE_LAST : 0) 2807 | (string == commands[i].prog 2808 ? PEXECUTE_SEARCH : 0) 2809 | (verbose_flag ? PEXECUTE_VERBOSE : 0))); 2810 2811 if (commands[i].pid == -1) 2812 pfatal_pexecute (errmsg_fmt, errmsg_arg); 2813 2814 if (string != commands[i].prog) 2815 free ((PTR) string); 2816 } 2817 2818 execution_count++; 2819 2820 /* Wait for all the subprocesses to finish. 2821 We don't care what order they finish in; 2822 we know that N_COMMANDS waits will get them all. 2823 Ignore subprocesses that we don't know about, 2824 since they can be spawned by the process that exec'ed us. */ 2825 2826 { 2827 int ret_code = 0; 2828#ifdef HAVE_GETRUSAGE 2829 struct timeval d; 2830 double ut = 0.0, st = 0.0; 2831#endif 2832 2833 for (i = 0; i < n_commands;) 2834 { 2835 int j; 2836 int status; 2837 int pid; 2838 2839 pid = pwait (commands[i].pid, &status, 0); 2840 if (pid < 0) 2841 abort (); 2842 2843#ifdef HAVE_GETRUSAGE 2844 if (report_times) 2845 { 2846 /* getrusage returns the total resource usage of all children 2847 up to now. Copy the previous values into prus, get the 2848 current statistics, then take the difference. */ 2849 2850 prus = rus; 2851 getrusage (RUSAGE_CHILDREN, &rus); 2852 d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec; 2853 d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec; 2854 ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6; 2855 2856 d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec; 2857 d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec; 2858 st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6; 2859 } 2860#endif 2861 2862 for (j = 0; j < n_commands; j++) 2863 if (commands[j].pid == pid) 2864 { 2865 i++; 2866 if (WIFSIGNALED (status)) 2867 { 2868#ifdef SIGPIPE 2869 /* SIGPIPE is a special case. It happens in -pipe mode 2870 when the compiler dies before the preprocessor is 2871 done, or the assembler dies before the compiler is 2872 done. There's generally been an error already, and 2873 this is just fallout. So don't generate another error 2874 unless we would otherwise have succeeded. */ 2875 if (WTERMSIG (status) == SIGPIPE 2876 && (signal_count || greatest_status >= MIN_FATAL_STATUS)) 2877 ; 2878 else 2879#endif 2880 fatal ("\ 2881Internal error: %s (program %s)\n\ 2882Please submit a full bug report.\n\ 2883See %s for instructions.", 2884 strsignal (WTERMSIG (status)), commands[j].prog, 2885 GCCBUGURL); 2886 signal_count++; 2887 ret_code = -1; 2888 } 2889 else if (WIFEXITED (status) 2890 && WEXITSTATUS (status) >= MIN_FATAL_STATUS) 2891 { 2892 if (WEXITSTATUS (status) > greatest_status) 2893 greatest_status = WEXITSTATUS (status); 2894 ret_code = -1; 2895 } 2896#ifdef HAVE_GETRUSAGE 2897 if (report_times && ut + st != 0) 2898 notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st); 2899#endif 2900 break; 2901 } 2902 } 2903 return ret_code; 2904 } 2905} 2906 2907/* Find all the switches given to us 2908 and make a vector describing them. 2909 The elements of the vector are strings, one per switch given. 2910 If a switch uses following arguments, then the `part1' field 2911 is the switch itself and the `args' field 2912 is a null-terminated vector containing the following arguments. 2913 The `live_cond' field is: 2914 0 when initialized 2915 1 if the switch is true in a conditional spec, 2916 -1 if false (overridden by a later switch) 2917 -2 if this switch should be ignored (used in %{<S}) 2918 The `validated' field is nonzero if any spec has looked at this switch; 2919 if it remains zero at the end of the run, it must be meaningless. */ 2920 2921#define SWITCH_OK 0 2922#define SWITCH_FALSE -1 2923#define SWITCH_IGNORE -2 2924#define SWITCH_LIVE 1 2925 2926struct switchstr 2927{ 2928 const char *part1; 2929 const char **args; 2930 int live_cond; 2931 unsigned char validated; 2932 unsigned char ordering; 2933}; 2934 2935static struct switchstr *switches; 2936 2937static int n_switches; 2938 2939struct infile 2940{ 2941 const char *name; 2942 const char *language; 2943}; 2944 2945/* Also a vector of input files specified. */ 2946 2947static struct infile *infiles; 2948 2949int n_infiles; 2950 2951/* This counts the number of libraries added by lang_specific_driver, so that 2952 we can tell if there were any user supplied any files or libraries. */ 2953 2954static int added_libraries; 2955 2956/* And a vector of corresponding output files is made up later. */ 2957 2958const char **outfiles; 2959 2960/* Used to track if none of the -B paths are used. */ 2961static int warn_B; 2962 2963/* Used to track if standard path isn't used and -b or -V is specified. */ 2964static int warn_std; 2965 2966/* Gives value to pass as "warn" to add_prefix for standard prefixes. */ 2967static int *warn_std_ptr = 0; 2968 2969 2970#if defined(FREEBSD_NATIVE) 2971#include <objformat.h> 2972 2973typedef enum { OBJFMT_UNKNOWN, OBJFMT_AOUT, OBJFMT_ELF } objf_t; 2974 2975static objf_t objformat = OBJFMT_UNKNOWN; 2976#endif 2977 2978 2979 2980#if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 2981 2982/* Convert NAME to a new name if it is the standard suffix. DO_EXE 2983 is true if we should look for an executable suffix. DO_OBJ 2984 is true if we should look for an object suffix. */ 2985 2986static const char * 2987convert_filename (name, do_exe, do_obj) 2988 const char *name; 2989 int do_exe ATTRIBUTE_UNUSED; 2990 int do_obj ATTRIBUTE_UNUSED; 2991{ 2992#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 2993 int i; 2994#endif 2995 int len; 2996 2997 if (name == NULL) 2998 return NULL; 2999 3000 len = strlen (name); 3001 3002#ifdef HAVE_TARGET_OBJECT_SUFFIX 3003 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */ 3004 if (do_obj && len > 2 3005 && name[len - 2] == '.' 3006 && name[len - 1] == 'o') 3007 { 3008 obstack_grow (&obstack, name, len - 2); 3009 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); 3010 name = obstack_finish (&obstack); 3011 } 3012#endif 3013 3014#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3015 /* If there is no filetype, make it the executable suffix (which includes 3016 the "."). But don't get confused if we have just "-o". */ 3017 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-')) 3018 return name; 3019 3020 for (i = len - 1; i >= 0; i--) 3021 if (IS_DIR_SEPARATOR (name[i])) 3022 break; 3023 3024 for (i++; i < len; i++) 3025 if (name[i] == '.') 3026 return name; 3027 3028 obstack_grow (&obstack, name, len); 3029 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX, 3030 strlen (TARGET_EXECUTABLE_SUFFIX)); 3031 name = obstack_finish (&obstack); 3032#endif 3033 3034 return name; 3035} 3036#endif 3037 3038/* Display the command line switches accepted by gcc. */ 3039static void 3040display_help () 3041{ 3042 printf (_("Usage: %s [options] file...\n"), programname); 3043 fputs (_("Options:\n"), stdout); 3044 3045 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout); 3046 fputs (_(" --help Display this information\n"), stdout); 3047 fputs (_(" --target-help Display target specific command line options\n"), stdout); 3048 if (! verbose_flag) 3049 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout); 3050 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout); 3051 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout); 3052 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout); 3053 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout); 3054 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout); 3055 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout); 3056 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout); 3057 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout); 3058 fputs (_("\ 3059 -print-multi-lib Display the mapping between command line options and\n\ 3060 multiple library search directories\n"), stdout); 3061 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout); 3062 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout); 3063 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout); 3064 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout); 3065 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout); 3066 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout); 3067 fputs (_(" -time Time the execution of each subprocess\n"), stdout); 3068 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout); 3069 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout); 3070 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout); 3071 fputs (_(" -b <machine> Run gcc for target <machine>, if installed\n"), stdout); 3072 fputs (_(" -V <version> Run gcc version number <version>, if installed\n"), stdout); 3073 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout); 3074 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout); 3075 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout); 3076 fputs (_(" -S Compile only; do not assemble or link\n"), stdout); 3077 fputs (_(" -c Compile and assemble, but do not link\n"), stdout); 3078 fputs (_(" -o <file> Place the output into <file>\n"), stdout); 3079 fputs (_("\ 3080 -x <language> Specify the language of the following input files\n\ 3081 Permissable languages include: c c++ assembler none\n\ 3082 'none' means revert to the default behavior of\n\ 3083 guessing the language based on the file's extension\n\ 3084"), stdout); 3085 3086 printf (_("\ 3087\nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ 3088 passed on to the various sub-processes invoked by %s. In order to pass\n\ 3089 other options on to these processes the -W<letter> options must be used.\n\ 3090"), programname); 3091 3092 /* The rest of the options are displayed by invocations of the various 3093 sub-processes. */ 3094} 3095 3096static void 3097add_preprocessor_option (option, len) 3098 const char *option; 3099 int len; 3100{ 3101 n_preprocessor_options++; 3102 3103 if (! preprocessor_options) 3104 preprocessor_options 3105 = (char **) xmalloc (n_preprocessor_options * sizeof (char *)); 3106 else 3107 preprocessor_options 3108 = (char **) xrealloc (preprocessor_options, 3109 n_preprocessor_options * sizeof (char *)); 3110 3111 preprocessor_options [n_preprocessor_options - 1] = 3112 save_string (option, len); 3113} 3114 3115static void 3116add_assembler_option (option, len) 3117 const char *option; 3118 int len; 3119{ 3120 n_assembler_options++; 3121 3122 if (! assembler_options) 3123 assembler_options 3124 = (char **) xmalloc (n_assembler_options * sizeof (char *)); 3125 else 3126 assembler_options 3127 = (char **) xrealloc (assembler_options, 3128 n_assembler_options * sizeof (char *)); 3129 3130 assembler_options [n_assembler_options - 1] = save_string (option, len); 3131} 3132 3133static void 3134add_linker_option (option, len) 3135 const char *option; 3136 int len; 3137{ 3138 n_linker_options++; 3139 3140 if (! linker_options) 3141 linker_options 3142 = (char **) xmalloc (n_linker_options * sizeof (char *)); 3143 else 3144 linker_options 3145 = (char **) xrealloc (linker_options, 3146 n_linker_options * sizeof (char *)); 3147 3148 linker_options [n_linker_options - 1] = save_string (option, len); 3149} 3150 3151/* Create the vector `switches' and its contents. 3152 Store its length in `n_switches'. */ 3153 3154static void 3155process_command (argc, argv) 3156 int argc; 3157 const char *const *argv; 3158{ 3159 int i; 3160 const char *temp; 3161 char *temp1; 3162 const char *spec_lang = 0; 3163 int last_language_n_infiles; 3164 int have_c = 0; 3165 int have_o = 0; 3166 int lang_n_infiles = 0; 3167#ifdef MODIFY_TARGET_NAME 3168 int is_modify_target_name; 3169 int j; 3170#endif 3171 3172 GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX"); 3173 3174 n_switches = 0; 3175 n_infiles = 0; 3176 added_libraries = 0; 3177 3178 /* Figure compiler version from version string. */ 3179 3180 compiler_version = temp1 = xstrdup (version_string); 3181 3182 for (; *temp1; ++temp1) 3183 { 3184 if (*temp1 == ' ') 3185 { 3186 *temp1 = '\0'; 3187 break; 3188 } 3189 } 3190 3191 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX, 3192 see if we can create it from the pathname specified in argv[0]. */ 3193 3194#ifndef FREEBSD_NATIVE 3195#ifndef VMS 3196 /* FIXME: make_relative_prefix doesn't yet work for VMS. */ 3197 if (!gcc_exec_prefix) 3198 { 3199 gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix, 3200 standard_exec_prefix); 3201 if (gcc_exec_prefix) 3202 putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL)); 3203 } 3204#endif 3205#endif /* not FREEBSD_NATIVE */ 3206 3207 if (gcc_exec_prefix) 3208 { 3209 int len = strlen (gcc_exec_prefix); 3210 3211 if (len > (int) sizeof ("/lib/gcc-lib/") - 1 3212 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1]))) 3213 { 3214 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1; 3215 if (IS_DIR_SEPARATOR (*temp) 3216 && strncmp (temp + 1, "lib", 3) == 0 3217 && IS_DIR_SEPARATOR (temp[4]) 3218 && strncmp (temp + 5, "gcc-lib", 7) == 0) 3219 len -= sizeof ("/lib/gcc-lib/") - 1; 3220 } 3221 3222 set_std_prefix (gcc_exec_prefix, len); 3223 add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC", 3224 PREFIX_PRIORITY_LAST, 0, NULL); 3225 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC", 3226 PREFIX_PRIORITY_LAST, 0, NULL); 3227 } 3228 3229 /* COMPILER_PATH and LIBRARY_PATH have values 3230 that are lists of directory names with colons. */ 3231 3232 GET_ENV_PATH_LIST (temp, "COMPILER_PATH"); 3233 if (temp) 3234 { 3235 const char *startp, *endp; 3236 char *nstore = (char *) alloca (strlen (temp) + 3); 3237 3238 startp = endp = temp; 3239 while (1) 3240 { 3241 if (*endp == PATH_SEPARATOR || *endp == 0) 3242 { 3243 strncpy (nstore, startp, endp - startp); 3244 if (endp == startp) 3245 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3246 else if (!IS_DIR_SEPARATOR (endp[-1])) 3247 { 3248 nstore[endp - startp] = DIR_SEPARATOR; 3249 nstore[endp - startp + 1] = 0; 3250 } 3251 else 3252 nstore[endp - startp] = 0; 3253 add_prefix (&exec_prefixes, nstore, 0, 3254 PREFIX_PRIORITY_LAST, 0, NULL); 3255 add_prefix (&include_prefixes, 3256 concat (nstore, "include", NULL), 3257 0, PREFIX_PRIORITY_LAST, 0, NULL); 3258 if (*endp == 0) 3259 break; 3260 endp = startp = endp + 1; 3261 } 3262 else 3263 endp++; 3264 } 3265 } 3266 3267 GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV); 3268 if (temp && *cross_compile == '0') 3269 { 3270 const char *startp, *endp; 3271 char *nstore = (char *) alloca (strlen (temp) + 3); 3272 3273 startp = endp = temp; 3274 while (1) 3275 { 3276 if (*endp == PATH_SEPARATOR || *endp == 0) 3277 { 3278 strncpy (nstore, startp, endp - startp); 3279 if (endp == startp) 3280 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3281 else if (!IS_DIR_SEPARATOR (endp[-1])) 3282 { 3283 nstore[endp - startp] = DIR_SEPARATOR; 3284 nstore[endp - startp + 1] = 0; 3285 } 3286 else 3287 nstore[endp - startp] = 0; 3288 add_prefix (&startfile_prefixes, nstore, NULL, 3289 PREFIX_PRIORITY_LAST, 0, NULL); 3290 if (*endp == 0) 3291 break; 3292 endp = startp = endp + 1; 3293 } 3294 else 3295 endp++; 3296 } 3297 } 3298 3299 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ 3300 GET_ENV_PATH_LIST (temp, "LPATH"); 3301 if (temp && *cross_compile == '0') 3302 { 3303 const char *startp, *endp; 3304 char *nstore = (char *) alloca (strlen (temp) + 3); 3305 3306 startp = endp = temp; 3307 while (1) 3308 { 3309 if (*endp == PATH_SEPARATOR || *endp == 0) 3310 { 3311 strncpy (nstore, startp, endp - startp); 3312 if (endp == startp) 3313 strcpy (nstore, concat (".", dir_separator_str, NULL)); 3314 else if (!IS_DIR_SEPARATOR (endp[-1])) 3315 { 3316 nstore[endp - startp] = DIR_SEPARATOR; 3317 nstore[endp - startp + 1] = 0; 3318 } 3319 else 3320 nstore[endp - startp] = 0; 3321 add_prefix (&startfile_prefixes, nstore, NULL, 3322 PREFIX_PRIORITY_LAST, 0, NULL); 3323 if (*endp == 0) 3324 break; 3325 endp = startp = endp + 1; 3326 } 3327 else 3328 endp++; 3329 } 3330 } 3331 3332#if defined(FREEBSD_NATIVE) 3333 { 3334 char buf[64]; 3335 if (getobjformat (buf, sizeof buf, &argc, argv)) 3336 if (strcmp (buf, "aout") == 0) 3337 objformat = OBJFMT_AOUT; 3338 else if (strcmp (buf, "elf") == 0) 3339 objformat = OBJFMT_ELF; 3340 else 3341 fprintf(stderr, "Unrecognized object format: %s\n", buf); 3342 } 3343#endif 3344 3345 /* Options specified as if they appeared on the command line. */ 3346 temp = getenv ("GCC_OPTIONS"); 3347 if ((temp) && (strlen (temp) > 0)) 3348 { 3349 int len; 3350 int optc = 1; 3351 int new_argc; 3352 char **new_argv; 3353 char *envopts; 3354 3355 while (isspace (*temp)) 3356 temp++; 3357 len = strlen (temp); 3358 envopts = (char *) xmalloc (len + 1); 3359 strcpy (envopts, temp); 3360 3361 for (i = 0; i < (len - 1); i++) 3362 if ((isspace (envopts[i])) && ! (isspace (envopts[i+1]))) 3363 optc++; 3364 3365 new_argv = (char **) alloca ((optc + argc) * sizeof(char *)); 3366 3367 for (i = 0, new_argc = 1; new_argc <= optc; new_argc++) 3368 { 3369 while (isspace (envopts[i])) 3370 i++; 3371 new_argv[new_argc] = envopts + i; 3372 while (!isspace (envopts[i]) && (envopts[i] != '\0')) 3373 i++; 3374 envopts[i++] = '\0'; 3375 } 3376 for (i = 1; i < argc; i++) 3377 new_argv[new_argc++] = argv[i]; 3378 3379 argv = new_argv; 3380 argc = new_argc; 3381 } 3382 3383 /* Convert new-style -- options to old-style. */ 3384 translate_options (&argc, &argv); 3385 3386 /* Do language-specific adjustment/addition of flags. */ 3387 lang_specific_driver (&argc, &argv, &added_libraries); 3388 3389 /* Scan argv twice. Here, the first time, just count how many switches 3390 there will be in their vector, and how many input files in theirs. 3391 Also parse any switches that determine the configuration name, such as -b. 3392 Here we also parse the switches that cc itself uses (e.g. -v). */ 3393 3394 for (i = 1; i < argc; i++) 3395 { 3396 if (! strcmp (argv[i], "-dumpspecs")) 3397 { 3398 struct spec_list *sl; 3399 init_spec (); 3400 for (sl = specs; sl; sl = sl->next) 3401 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec)); 3402 if (link_command_spec) 3403 printf ("*link_command:\n%s\n\n", link_command_spec); 3404 exit (0); 3405 } 3406 else if (! strcmp (argv[i], "-dumpversion")) 3407 { 3408 printf ("%s\n", spec_version); 3409 exit (0); 3410 } 3411 else if (! strcmp (argv[i], "-dumpmachine")) 3412 { 3413 printf ("%s\n", spec_machine); 3414 exit (0); 3415 } 3416 else if (strcmp (argv[i], "-fversion") == 0) 3417 { 3418 /* translate_options () has turned --version into -fversion. */ 3419 printf (_("%s (GCC) %s\n"), programname, version_string); 3420 fputs (_("Copyright (C) 2002 Free Software Foundation, Inc.\n"), 3421 stdout); 3422 fputs (_("This is free software; see the source for copying conditions. There is NO\n\ 3423warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"), 3424 stdout); 3425 exit (0); 3426 } 3427 else if (strcmp (argv[i], "-fhelp") == 0) 3428 { 3429 /* translate_options () has turned --help into -fhelp. */ 3430 print_help_list = 1; 3431 3432 /* We will be passing a dummy file on to the sub-processes. */ 3433 n_infiles++; 3434 n_switches++; 3435 3436 /* CPP driver cannot obtain switch from cc1_options. */ 3437 if (is_cpp_driver) 3438 add_preprocessor_option ("--help", 6); 3439 add_assembler_option ("--help", 6); 3440 add_linker_option ("--help", 6); 3441 } 3442 else if (strcmp (argv[i], "-ftarget-help") == 0) 3443 { 3444 /* translate_options() has turned --target-help into -ftarget-help. */ 3445 target_help_flag = 1; 3446 3447 /* We will be passing a dummy file on to the sub-processes. */ 3448 n_infiles++; 3449 n_switches++; 3450 3451 /* CPP driver cannot obtain switch from cc1_options. */ 3452 if (is_cpp_driver) 3453 add_preprocessor_option ("--target-help", 13); 3454 add_assembler_option ("--target-help", 13); 3455 add_linker_option ("--target-help", 13); 3456 } 3457 else if (! strcmp (argv[i], "-pass-exit-codes")) 3458 { 3459 pass_exit_codes = 1; 3460 n_switches++; 3461 } 3462 else if (! strcmp (argv[i], "-print-search-dirs")) 3463 print_search_dirs = 1; 3464 else if (! strcmp (argv[i], "-print-libgcc-file-name")) 3465 print_file_name = "libgcc.a"; 3466 else if (! strncmp (argv[i], "-print-file-name=", 17)) 3467 print_file_name = argv[i] + 17; 3468 else if (! strncmp (argv[i], "-print-prog-name=", 17)) 3469 print_prog_name = argv[i] + 17; 3470 else if (! strcmp (argv[i], "-print-multi-lib")) 3471 print_multi_lib = 1; 3472 else if (! strcmp (argv[i], "-print-multi-directory")) 3473 print_multi_directory = 1; 3474 else if (! strncmp (argv[i], "-Wa,", 4)) 3475 { 3476 int prev, j; 3477 /* Pass the rest of this option to the assembler. */ 3478 3479 /* Split the argument at commas. */ 3480 prev = 4; 3481 for (j = 4; argv[i][j]; j++) 3482 if (argv[i][j] == ',') 3483 { 3484 add_assembler_option (argv[i] + prev, j - prev); 3485 prev = j + 1; 3486 } 3487 3488 /* Record the part after the last comma. */ 3489 add_assembler_option (argv[i] + prev, j - prev); 3490 } 3491 else if (! strncmp (argv[i], "-Wp,", 4)) 3492 { 3493 int prev, j; 3494 /* Pass the rest of this option to the preprocessor. */ 3495 3496 /* Split the argument at commas. */ 3497 prev = 4; 3498 for (j = 4; argv[i][j]; j++) 3499 if (argv[i][j] == ',') 3500 { 3501 add_preprocessor_option (argv[i] + prev, j - prev); 3502 prev = j + 1; 3503 } 3504 3505 /* Record the part after the last comma. */ 3506 add_preprocessor_option (argv[i] + prev, j - prev); 3507 } 3508 else if (argv[i][0] == '+' && argv[i][1] == 'e') 3509 /* The +e options to the C++ front-end. */ 3510 n_switches++; 3511 else if (strncmp (argv[i], "-Wl,", 4) == 0) 3512 { 3513 int j; 3514 /* Split the argument at commas. */ 3515 for (j = 3; argv[i][j]; j++) 3516 n_infiles += (argv[i][j] == ','); 3517 } 3518 else if (strcmp (argv[i], "-Xlinker") == 0) 3519 { 3520 if (i + 1 == argc) 3521 fatal ("argument to `-Xlinker' is missing"); 3522 3523 n_infiles++; 3524 i++; 3525 } 3526 else if (strcmp (argv[i], "-l") == 0) 3527 { 3528 if (i + 1 == argc) 3529 fatal ("argument to `-l' is missing"); 3530 3531 n_infiles++; 3532 i++; 3533 } 3534 else if (strncmp (argv[i], "-l", 2) == 0) 3535 n_infiles++; 3536 else if (strcmp (argv[i], "-save-temps") == 0) 3537 { 3538 save_temps_flag = 1; 3539 n_switches++; 3540 } 3541 else if (strcmp (argv[i], "-specs") == 0) 3542 { 3543 struct user_specs *user = (struct user_specs *) 3544 xmalloc (sizeof (struct user_specs)); 3545 if (++i >= argc) 3546 fatal ("argument to `-specs' is missing"); 3547 3548 user->next = (struct user_specs *) 0; 3549 user->filename = argv[i]; 3550 if (user_specs_tail) 3551 user_specs_tail->next = user; 3552 else 3553 user_specs_head = user; 3554 user_specs_tail = user; 3555 } 3556 else if (strncmp (argv[i], "-specs=", 7) == 0) 3557 { 3558 struct user_specs *user = (struct user_specs *) 3559 xmalloc (sizeof (struct user_specs)); 3560 if (strlen (argv[i]) == 7) 3561 fatal ("argument to `-specs=' is missing"); 3562 3563 user->next = (struct user_specs *) 0; 3564 user->filename = argv[i] + 7; 3565 if (user_specs_tail) 3566 user_specs_tail->next = user; 3567 else 3568 user_specs_head = user; 3569 user_specs_tail = user; 3570 } 3571 else if (strcmp (argv[i], "-time") == 0) 3572 report_times = 1; 3573 else if (strcmp (argv[i], "-###") == 0) 3574 { 3575 /* This is similar to -v except that there is no execution 3576 of the commands and the echoed arguments are quoted. It 3577 is intended for use in shell scripts to capture the 3578 driver-generated command line. */ 3579 verbose_only_flag++; 3580 verbose_flag++; 3581 } 3582 else if (argv[i][0] == '-' && argv[i][1] != 0) 3583 { 3584 const char *p = &argv[i][1]; 3585 int c = *p; 3586 3587 switch (c) 3588 { 3589 case 'b': 3590 n_switches++; 3591 if (p[1] == 0 && i + 1 == argc) 3592 fatal ("argument to `-b' is missing"); 3593 if (p[1] == 0) 3594 spec_machine = argv[++i]; 3595 else 3596 spec_machine = p + 1; 3597 3598 warn_std_ptr = &warn_std; 3599 break; 3600 3601 case 'B': 3602 { 3603 const char *value; 3604 int len; 3605 3606 if (p[1] == 0 && i + 1 == argc) 3607 fatal ("argument to `-B' is missing"); 3608 if (p[1] == 0) 3609 value = argv[++i]; 3610 else 3611 value = p + 1; 3612 3613 len = strlen (value); 3614 3615 /* Catch the case where the user has forgotten to append a 3616 directory separator to the path. Note, they may be using 3617 -B to add an executable name prefix, eg "i386-elf-", in 3618 order to distinguish between multiple installations of 3619 GCC in the same directory. Hence we must check to see 3620 if appending a directory separator actually makes a 3621 valid directory name. */ 3622 if (! IS_DIR_SEPARATOR (value [len - 1]) 3623 && is_directory (value, "", 0)) 3624 { 3625 char *tmp = xmalloc (len + 2); 3626 strcpy (tmp, value); 3627 tmp[len] = DIR_SEPARATOR; 3628 tmp[++ len] = 0; 3629 value = tmp; 3630 } 3631 3632 /* As a kludge, if the arg is "[foo/]stageN/", just 3633 add "[foo/]include" to the include prefix. */ 3634 if ((len == 7 3635 || (len > 7 3636 && (IS_DIR_SEPARATOR (value[len - 8])))) 3637 && strncmp (value + len - 7, "stage", 5) == 0 3638 && ISDIGIT (value[len - 2]) 3639 && (IS_DIR_SEPARATOR (value[len - 1]))) 3640 { 3641 if (len == 7) 3642 add_prefix (&include_prefixes, "include", NULL, 3643 PREFIX_PRIORITY_B_OPT, 0, NULL); 3644 else 3645 { 3646 char * string = xmalloc (len + 1); 3647 3648 strncpy (string, value, len - 7); 3649 strcpy (string + len - 7, "include"); 3650 add_prefix (&include_prefixes, string, NULL, 3651 PREFIX_PRIORITY_B_OPT, 0, NULL); 3652 } 3653 } 3654 3655 add_prefix (&exec_prefixes, value, NULL, 3656 PREFIX_PRIORITY_B_OPT, 0, &warn_B); 3657 add_prefix (&startfile_prefixes, value, NULL, 3658 PREFIX_PRIORITY_B_OPT, 0, &warn_B); 3659 add_prefix (&include_prefixes, concat (value, "include", NULL), 3660 NULL, PREFIX_PRIORITY_B_OPT, 0, NULL); 3661 n_switches++; 3662 } 3663 break; 3664 3665 case 'v': /* Print our subcommands and print versions. */ 3666 n_switches++; 3667 /* If they do anything other than exactly `-v', don't set 3668 verbose_flag; rather, continue on to give the error. */ 3669 if (p[1] != 0) 3670 break; 3671 verbose_flag++; 3672 break; 3673 3674 case 'V': 3675 n_switches++; 3676 if (p[1] == 0 && i + 1 == argc) 3677 fatal ("argument to `-V' is missing"); 3678 if (p[1] == 0) 3679 spec_version = argv[++i]; 3680 else 3681 spec_version = p + 1; 3682 compiler_version = spec_version; 3683 warn_std_ptr = &warn_std; 3684 3685 /* Validate the version number. Use the same checks 3686 done when inserting it into a spec. 3687 3688 The format of the version string is 3689 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */ 3690 { 3691 const char *v = compiler_version; 3692 3693 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */ 3694 while (! ISDIGIT (*v)) 3695 v++; 3696 3697 if (v > compiler_version && v[-1] != '-') 3698 fatal ("invalid version number format"); 3699 3700 /* Set V after the first period. */ 3701 while (ISDIGIT (*v)) 3702 v++; 3703 3704 if (*v != '.') 3705 fatal ("invalid version number format"); 3706 3707 v++; 3708 while (ISDIGIT (*v)) 3709 v++; 3710 3711 if (*v != 0 && *v != ' ' && *v != '.' && *v != '-') 3712 fatal ("invalid version number format"); 3713 } 3714 break; 3715 3716 case 'S': 3717 case 'c': 3718 if (p[1] == 0) 3719 { 3720 have_c = 1; 3721 n_switches++; 3722 break; 3723 } 3724 goto normal_switch; 3725 3726 case 'o': 3727 have_o = 1; 3728#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) 3729 if (! have_c) 3730 { 3731 int skip; 3732 3733 /* Forward scan, just in case -S or -c is specified 3734 after -o. */ 3735 int j = i + 1; 3736 if (p[1] == 0) 3737 ++j; 3738 while (j < argc) 3739 { 3740 if (argv[j][0] == '-') 3741 { 3742 if (SWITCH_CURTAILS_COMPILATION (argv[j][1]) 3743 && argv[j][2] == 0) 3744 { 3745 have_c = 1; 3746 break; 3747 } 3748 else if ((skip = SWITCH_TAKES_ARG (argv[j][1]))) 3749 j += skip - (argv[j][2] != 0); 3750 else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1))) 3751 j += skip; 3752 } 3753 j++; 3754 } 3755 } 3756#endif 3757#if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX) 3758 if (p[1] == 0) 3759 argv[i + 1] = convert_filename (argv[i + 1], ! have_c, 0); 3760 else 3761 argv[i] = convert_filename (argv[i], ! have_c, 0); 3762#endif 3763 goto normal_switch; 3764 3765 default: 3766 normal_switch: 3767 3768#ifdef MODIFY_TARGET_NAME 3769 is_modify_target_name = 0; 3770 3771 for (j = 0; 3772 j < sizeof modify_target / sizeof modify_target[0]; j++) 3773 if (! strcmp (argv[i], modify_target[j].sw)) 3774 { 3775 char *new_name 3776 = (char *) xmalloc (strlen (modify_target[j].str) 3777 + strlen (spec_machine)); 3778 const char *p, *r; 3779 char *q; 3780 int made_addition = 0; 3781 3782 is_modify_target_name = 1; 3783 for (p = spec_machine, q = new_name; *p != 0; ) 3784 { 3785 if (modify_target[j].add_del == DELETE 3786 && (! strncmp (q, modify_target[j].str, 3787 strlen (modify_target[j].str)))) 3788 p += strlen (modify_target[j].str); 3789 else if (modify_target[j].add_del == ADD 3790 && ! made_addition && *p == '-') 3791 { 3792 for (r = modify_target[j].str; *r != 0; ) 3793 *q++ = *r++; 3794 made_addition = 1; 3795 } 3796 3797 *q++ = *p++; 3798 } 3799 3800 spec_machine = new_name; 3801 } 3802 3803 if (is_modify_target_name) 3804 break; 3805#endif 3806 3807 n_switches++; 3808 3809 if (SWITCH_TAKES_ARG (c) > (p[1] != 0)) 3810 i += SWITCH_TAKES_ARG (c) - (p[1] != 0); 3811 else if (WORD_SWITCH_TAKES_ARG (p)) 3812 i += WORD_SWITCH_TAKES_ARG (p); 3813 } 3814 } 3815 else 3816 { 3817 n_infiles++; 3818 lang_n_infiles++; 3819 } 3820 } 3821 3822 if (have_c && have_o && lang_n_infiles > 1) 3823 fatal ("cannot specify -o with -c or -S and multiple compilations"); 3824 3825 /* Set up the search paths before we go looking for config files. */ 3826 3827 /* These come before the md prefixes so that we will find gcc's subcommands 3828 (such as cpp) rather than those of the host system. */ 3829 /* Use 2 as fourth arg meaning try just the machine as a suffix, 3830 as well as trying the machine and the version. */ 3831#ifdef FREEBSD_NATIVE 3832 switch (objformat) 3833 { 3834 case OBJFMT_AOUT: 3835 n_switches++; /* add implied -maout */ 3836 add_prefix (&exec_prefixes, PREFIX"/libexec/aout/", "BINUTILS", 3837 0, 0, warn_std_ptr); 3838 break; 3839 case OBJFMT_ELF: 3840 add_prefix (&exec_prefixes, PREFIX"/libexec/elf/", "BINUTILS", 3841 0, 0, warn_std_ptr); 3842 break; 3843 case OBJFMT_UNKNOWN: 3844 fatal ("object format unknown"); 3845 } 3846#endif /* FREEBSD_NATIVE */ 3847#ifndef OS2 3848 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC", 3849 PREFIX_PRIORITY_LAST, 1, warn_std_ptr); 3850 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS", 3851 PREFIX_PRIORITY_LAST, 2, warn_std_ptr); 3852#ifndef FREEBSD_NATIVE 3853 add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS", 3854 PREFIX_PRIORITY_LAST, 2, warn_std_ptr); 3855#endif /* not FREEBSD_NATIVE */ 3856#endif 3857 3858#ifndef FREEBSD_NATIVE 3859 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS", 3860 PREFIX_PRIORITY_LAST, 1, warn_std_ptr); 3861 add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS", 3862 PREFIX_PRIORITY_LAST, 1, warn_std_ptr); 3863#endif /* not FREEBSD_NATIVE */ 3864 3865 tooldir_prefix = concat (tooldir_base_prefix, spec_machine, 3866 dir_separator_str, NULL); 3867 3868 /* If tooldir is relative, base it on exec_prefixes. A relative 3869 tooldir lets us move the installed tree as a unit. 3870 3871 If GCC_EXEC_PREFIX is defined, then we want to add two relative 3872 directories, so that we can search both the user specified directory 3873 and the standard place. */ 3874 3875 if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix)) 3876 { 3877 if (gcc_exec_prefix) 3878 { 3879 char *gcc_exec_tooldir_prefix 3880 = concat (gcc_exec_prefix, spec_machine, dir_separator_str, 3881 spec_version, dir_separator_str, tooldir_prefix, NULL); 3882 3883 add_prefix (&exec_prefixes, 3884 concat (gcc_exec_tooldir_prefix, "bin", 3885 dir_separator_str, NULL), 3886 NULL, PREFIX_PRIORITY_LAST, 0, NULL); 3887 add_prefix (&startfile_prefixes, 3888 concat (gcc_exec_tooldir_prefix, "lib", 3889 dir_separator_str, NULL), 3890 NULL, PREFIX_PRIORITY_LAST, 0, NULL); 3891 } 3892 3893 tooldir_prefix = concat (standard_exec_prefix, spec_machine, 3894 dir_separator_str, spec_version, 3895 dir_separator_str, tooldir_prefix, NULL); 3896 } 3897 3898#ifndef FREEBSD_NATIVE 3899 add_prefix (&exec_prefixes, 3900 concat (tooldir_prefix, "bin", dir_separator_str, NULL), 3901 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); 3902 add_prefix (&startfile_prefixes, 3903 concat (tooldir_prefix, "lib", dir_separator_str, NULL), 3904 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); 3905#endif /* FREEBSD_NATIVE */ 3906 3907 /* More prefixes are enabled in main, after we read the specs file 3908 and determine whether this is cross-compilation or not. */ 3909 3910 /* Then create the space for the vectors and scan again. */ 3911 3912 switches = ((struct switchstr *) 3913 xmalloc ((n_switches + 1) * sizeof (struct switchstr))); 3914 infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile)); 3915 n_switches = 0; 3916 n_infiles = 0; 3917 last_language_n_infiles = -1; 3918 3919 /* This, time, copy the text of each switch and store a pointer 3920 to the copy in the vector of switches. 3921 Store all the infiles in their vector. */ 3922 3923#if defined(FREEBSD_NATIVE) 3924 switch (objformat) 3925 { 3926 case OBJFMT_AOUT: 3927 switches[n_switches].part1 = "maout"; 3928 switches[n_switches].args = 0; 3929 switches[n_switches].live_cond = 0; 3930 switches[n_switches].validated = 0; 3931 n_switches++; 3932 putenv("OBJFORMAT=aout"); 3933 break; 3934 case OBJFMT_ELF: 3935 putenv("OBJFORMAT=elf"); 3936 break; 3937 case OBJFMT_UNKNOWN: 3938 fatal ("object format unknown"); 3939 } 3940#endif 3941 3942 for (i = 1; i < argc; i++) 3943 { 3944 /* Just skip the switches that were handled by the preceding loop. */ 3945#ifdef MODIFY_TARGET_NAME 3946 is_modify_target_name = 0; 3947 3948 for (j = 0; j < sizeof modify_target / sizeof modify_target[0]; j++) 3949 if (! strcmp (argv[i], modify_target[j].sw)) 3950 is_modify_target_name = 1; 3951 3952 if (is_modify_target_name) 3953 ; 3954 else 3955#endif 3956 if (! strncmp (argv[i], "-Wa,", 4)) 3957 ; 3958 else if (! strncmp (argv[i], "-Wp,", 4)) 3959 ; 3960 else if (! strcmp (argv[i], "-pass-exit-codes")) 3961 ; 3962 else if (! strcmp (argv[i], "-print-search-dirs")) 3963 ; 3964 else if (! strcmp (argv[i], "-print-libgcc-file-name")) 3965 ; 3966 else if (! strncmp (argv[i], "-print-file-name=", 17)) 3967 ; 3968 else if (! strncmp (argv[i], "-print-prog-name=", 17)) 3969 ; 3970 else if (! strcmp (argv[i], "-print-multi-lib")) 3971 ; 3972 else if (! strcmp (argv[i], "-print-multi-directory")) 3973 ; 3974 else if (! strcmp (argv[i], "-ftarget-help")) 3975 ; 3976 else if (! strcmp (argv[i], "-fhelp")) 3977 ; 3978 else if (argv[i][0] == '+' && argv[i][1] == 'e') 3979 { 3980 /* Compensate for the +e options to the C++ front-end; 3981 they're there simply for cfront call-compatibility. We do 3982 some magic in default_compilers to pass them down properly. 3983 Note we deliberately start at the `+' here, to avoid passing 3984 -e0 or -e1 down into the linker. */ 3985 switches[n_switches].part1 = &argv[i][0]; 3986 switches[n_switches].args = 0; 3987 switches[n_switches].live_cond = SWITCH_OK; 3988 switches[n_switches].validated = 0; 3989 n_switches++; 3990 } 3991 else if (strncmp (argv[i], "-Wl,", 4) == 0) 3992 { 3993 int prev, j; 3994 /* Split the argument at commas. */ 3995 prev = 4; 3996 for (j = 4; argv[i][j]; j++) 3997 if (argv[i][j] == ',') 3998 { 3999 infiles[n_infiles].language = "*"; 4000 infiles[n_infiles++].name 4001 = save_string (argv[i] + prev, j - prev); 4002 prev = j + 1; 4003 } 4004 /* Record the part after the last comma. */ 4005 infiles[n_infiles].language = "*"; 4006 infiles[n_infiles++].name = argv[i] + prev; 4007 } 4008 else if (strcmp (argv[i], "-Xlinker") == 0) 4009 { 4010 infiles[n_infiles].language = "*"; 4011 infiles[n_infiles++].name = argv[++i]; 4012 } 4013 else if (strcmp (argv[i], "-l") == 0) 4014 { /* POSIX allows separation of -l and the lib arg; 4015 canonicalize by concatenating -l with its arg */ 4016 infiles[n_infiles].language = "*"; 4017 infiles[n_infiles++].name = concat ("-l", argv[++i], NULL); 4018 } 4019 else if (strncmp (argv[i], "-l", 2) == 0) 4020 { 4021 infiles[n_infiles].language = "*"; 4022 infiles[n_infiles++].name = argv[i]; 4023 } 4024 else if (strcmp (argv[i], "-specs") == 0) 4025 i++; 4026 else if (strncmp (argv[i], "-specs=", 7) == 0) 4027 ; 4028 else if (strcmp (argv[i], "-time") == 0) 4029 ; 4030 else if ((save_temps_flag || report_times) 4031 && strcmp (argv[i], "-pipe") == 0) 4032 { 4033 /* -save-temps overrides -pipe, so that temp files are produced */ 4034 if (save_temps_flag) 4035 error ("warning: -pipe ignored because -save-temps specified"); 4036 /* -time overrides -pipe because we can't get correct stats when 4037 multiple children are running at once. */ 4038 else if (report_times) 4039 error ("warning: -pipe ignored because -time specified"); 4040 } 4041 else if (strcmp (argv[i], "-###") == 0) 4042 ; 4043 else if (argv[i][0] == '-' && argv[i][1] != 0) 4044 { 4045 const char *p = &argv[i][1]; 4046 int c = *p; 4047 4048 if (c == 'x') 4049 { 4050 if (p[1] == 0 && i + 1 == argc) 4051 fatal ("argument to `-x' is missing"); 4052 if (p[1] == 0) 4053 spec_lang = argv[++i]; 4054 else 4055 spec_lang = p + 1; 4056 if (! strcmp (spec_lang, "none")) 4057 /* Suppress the warning if -xnone comes after the last input 4058 file, because alternate command interfaces like g++ might 4059 find it useful to place -xnone after each input file. */ 4060 spec_lang = 0; 4061 else 4062 last_language_n_infiles = n_infiles; 4063 continue; 4064 } 4065 switches[n_switches].part1 = p; 4066 /* Deal with option arguments in separate argv elements. */ 4067 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0)) 4068 || WORD_SWITCH_TAKES_ARG (p)) 4069 { 4070 int j = 0; 4071 int n_args = WORD_SWITCH_TAKES_ARG (p); 4072 4073 if (n_args == 0) 4074 { 4075 /* Count only the option arguments in separate argv elements. */ 4076 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0); 4077 } 4078 if (i + n_args >= argc) 4079 fatal ("argument to `-%s' is missing", p); 4080 switches[n_switches].args 4081 = (const char **) xmalloc ((n_args + 1) * sizeof(const char *)); 4082 while (j < n_args) 4083 switches[n_switches].args[j++] = argv[++i]; 4084 /* Null-terminate the vector. */ 4085 switches[n_switches].args[j] = 0; 4086 } 4087 else if (strchr (switches_need_spaces, c)) 4088 { 4089 /* On some systems, ld cannot handle some options without 4090 a space. So split the option from its argument. */ 4091 char *part1 = (char *) xmalloc (2); 4092 part1[0] = c; 4093 part1[1] = '\0'; 4094 4095 switches[n_switches].part1 = part1; 4096 switches[n_switches].args 4097 = (const char **) xmalloc (2 * sizeof (const char *)); 4098 switches[n_switches].args[0] = xstrdup (p+1); 4099 switches[n_switches].args[1] = 0; 4100 } 4101 else 4102 switches[n_switches].args = 0; 4103 4104 switches[n_switches].live_cond = SWITCH_OK; 4105 switches[n_switches].validated = 0; 4106 switches[n_switches].ordering = 0; 4107 /* These are always valid, since gcc.c itself understands it. */ 4108 if (!strcmp (p, "save-temps") 4109 || !strcmp (p, "static-libgcc") 4110 || !strcmp (p, "shared-libgcc")) 4111 switches[n_switches].validated = 1; 4112 else 4113 { 4114 char ch = switches[n_switches].part1[0]; 4115 if (ch == 'V' || ch == 'b' || ch == 'B') 4116 switches[n_switches].validated = 1; 4117 } 4118 n_switches++; 4119 } 4120 else 4121 { 4122#ifdef HAVE_TARGET_OBJECT_SUFFIX 4123 argv[i] = convert_filename (argv[i], 0, access (argv[i], F_OK)); 4124#endif 4125 4126 if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0) 4127 { 4128 perror_with_name (argv[i]); 4129 error_count++; 4130 } 4131 else 4132 { 4133 infiles[n_infiles].language = spec_lang; 4134 infiles[n_infiles++].name = argv[i]; 4135 } 4136 } 4137 } 4138 4139 if (n_infiles == last_language_n_infiles && spec_lang != 0) 4140 error ("warning: `-x %s' after last input file has no effect", spec_lang); 4141 4142 /* Ensure we only invoke each subprocess once. */ 4143 if (target_help_flag || print_help_list) 4144 { 4145 n_infiles = 1; 4146 4147 /* Create a dummy input file, so that we can pass --target-help on to 4148 the various sub-processes. */ 4149 infiles[0].language = "c"; 4150 infiles[0].name = "help-dummy"; 4151 4152 if (target_help_flag) 4153 { 4154 switches[n_switches].part1 = "--target-help"; 4155 switches[n_switches].args = 0; 4156 switches[n_switches].live_cond = SWITCH_OK; 4157 switches[n_switches].validated = 0; 4158 4159 n_switches++; 4160 } 4161 4162 if (print_help_list) 4163 { 4164 switches[n_switches].part1 = "--help"; 4165 switches[n_switches].args = 0; 4166 switches[n_switches].live_cond = SWITCH_OK; 4167 switches[n_switches].validated = 0; 4168 4169 n_switches++; 4170 } 4171 } 4172 4173 switches[n_switches].part1 = 0; 4174 infiles[n_infiles].name = 0; 4175} 4176 4177/* Store switches not filtered out by %{<S} in spec in COLLECT_GCC_OPTIONS 4178 and place that in the environment. */ 4179 4180static void 4181set_collect_gcc_options () 4182{ 4183 int i; 4184 int first_time; 4185 4186 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to 4187 the compiler. */ 4188 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=", 4189 sizeof ("COLLECT_GCC_OPTIONS=") - 1); 4190 4191 first_time = TRUE; 4192 for (i = 0; (int) i < n_switches; i++) 4193 { 4194 const char *const *args; 4195 const char *p, *q; 4196 if (!first_time) 4197 obstack_grow (&collect_obstack, " ", 1); 4198 4199 first_time = FALSE; 4200 4201 /* Ignore elided switches. */ 4202 if (switches[i].live_cond == SWITCH_IGNORE) 4203 continue; 4204 4205 obstack_grow (&collect_obstack, "'-", 2); 4206 q = switches[i].part1; 4207 while ((p = strchr (q, '\''))) 4208 { 4209 obstack_grow (&collect_obstack, q, p - q); 4210 obstack_grow (&collect_obstack, "'\\''", 4); 4211 q = ++p; 4212 } 4213 obstack_grow (&collect_obstack, q, strlen (q)); 4214 obstack_grow (&collect_obstack, "'", 1); 4215 4216 for (args = switches[i].args; args && *args; args++) 4217 { 4218 obstack_grow (&collect_obstack, " '", 2); 4219 q = *args; 4220 while ((p = strchr (q, '\''))) 4221 { 4222 obstack_grow (&collect_obstack, q, p - q); 4223 obstack_grow (&collect_obstack, "'\\''", 4); 4224 q = ++p; 4225 } 4226 obstack_grow (&collect_obstack, q, strlen (q)); 4227 obstack_grow (&collect_obstack, "'", 1); 4228 } 4229 } 4230 obstack_grow (&collect_obstack, "\0", 1); 4231 putenv (obstack_finish (&collect_obstack)); 4232} 4233 4234/* Process a spec string, accumulating and running commands. */ 4235 4236/* These variables describe the input file name. 4237 input_file_number is the index on outfiles of this file, 4238 so that the output file name can be stored for later use by %o. 4239 input_basename is the start of the part of the input file 4240 sans all directory names, and basename_length is the number 4241 of characters starting there excluding the suffix .c or whatever. */ 4242 4243const char *input_filename; 4244static int input_file_number; 4245size_t input_filename_length; 4246static int basename_length; 4247static int suffixed_basename_length; 4248static const char *input_basename; 4249static const char *input_suffix; 4250static struct stat input_stat; 4251static int input_stat_set; 4252 4253/* The compiler used to process the current input file. */ 4254static struct compiler *input_file_compiler; 4255 4256/* These are variables used within do_spec and do_spec_1. */ 4257 4258/* Nonzero if an arg has been started and not yet terminated 4259 (with space, tab or newline). */ 4260static int arg_going; 4261 4262/* Nonzero means %d or %g has been seen; the next arg to be terminated 4263 is a temporary file name. */ 4264static int delete_this_arg; 4265 4266/* Nonzero means %w has been seen; the next arg to be terminated 4267 is the output file name of this compilation. */ 4268static int this_is_output_file; 4269 4270/* Nonzero means %s has been seen; the next arg to be terminated 4271 is the name of a library file and we should try the standard 4272 search dirs for it. */ 4273static int this_is_library_file; 4274 4275/* Nonzero means that the input of this command is coming from a pipe. */ 4276static int input_from_pipe; 4277 4278/* Nonnull means substitute this for any suffix when outputting a switches 4279 arguments. */ 4280static const char *suffix_subst; 4281 4282/* Process the spec SPEC and run the commands specified therein. 4283 Returns 0 if the spec is successfully processed; -1 if failed. */ 4284 4285int 4286do_spec (spec) 4287 const char *spec; 4288{ 4289 int value; 4290 4291 clear_args (); 4292 arg_going = 0; 4293 delete_this_arg = 0; 4294 this_is_output_file = 0; 4295 this_is_library_file = 0; 4296 input_from_pipe = 0; 4297 suffix_subst = NULL; 4298 4299 value = do_spec_1 (spec, 0, NULL); 4300 4301 /* Force out any unfinished command. 4302 If -pipe, this forces out the last command if it ended in `|'. */ 4303 if (value == 0) 4304 { 4305 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|")) 4306 argbuf_index--; 4307 4308 set_collect_gcc_options (); 4309 4310 if (argbuf_index > 0) 4311 value = execute (); 4312 } 4313 4314 return value; 4315} 4316 4317/* Process the sub-spec SPEC as a portion of a larger spec. 4318 This is like processing a whole spec except that we do 4319 not initialize at the beginning and we do not supply a 4320 newline by default at the end. 4321 INSWITCH nonzero means don't process %-sequences in SPEC; 4322 in this case, % is treated as an ordinary character. 4323 This is used while substituting switches. 4324 INSWITCH nonzero also causes SPC not to terminate an argument. 4325 4326 Value is zero unless a line was finished 4327 and the command on that line reported an error. */ 4328 4329static int 4330do_spec_1 (spec, inswitch, soft_matched_part) 4331 const char *spec; 4332 int inswitch; 4333 const char *soft_matched_part; 4334{ 4335 const char *p = spec; 4336 int c; 4337 int i; 4338 const char *string; 4339 int value; 4340 4341 while ((c = *p++)) 4342 /* If substituting a switch, treat all chars like letters. 4343 Otherwise, NL, SPC, TAB and % are special. */ 4344 switch (inswitch ? 'a' : c) 4345 { 4346 case '\n': 4347 /* End of line: finish any pending argument, 4348 then run the pending command if one has been started. */ 4349 if (arg_going) 4350 { 4351 obstack_1grow (&obstack, 0); 4352 string = obstack_finish (&obstack); 4353 if (this_is_library_file) 4354 string = find_file (string); 4355 store_arg (string, delete_this_arg, this_is_output_file); 4356 if (this_is_output_file) 4357 outfiles[input_file_number] = string; 4358 } 4359 arg_going = 0; 4360 4361 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|")) 4362 { 4363 for (i = 0; i < n_switches; i++) 4364 if (!strcmp (switches[i].part1, "pipe")) 4365 break; 4366 4367 /* A `|' before the newline means use a pipe here, 4368 but only if -pipe was specified. 4369 Otherwise, execute now and don't pass the `|' as an arg. */ 4370 if (i < n_switches) 4371 { 4372 input_from_pipe = 1; 4373 switches[i].validated = 1; 4374 break; 4375 } 4376 else 4377 argbuf_index--; 4378 } 4379 4380 set_collect_gcc_options (); 4381 4382 if (argbuf_index > 0) 4383 { 4384 value = execute (); 4385 if (value) 4386 return value; 4387 } 4388 /* Reinitialize for a new command, and for a new argument. */ 4389 clear_args (); 4390 arg_going = 0; 4391 delete_this_arg = 0; 4392 this_is_output_file = 0; 4393 this_is_library_file = 0; 4394 input_from_pipe = 0; 4395 break; 4396 4397 case '|': 4398 /* End any pending argument. */ 4399 if (arg_going) 4400 { 4401 obstack_1grow (&obstack, 0); 4402 string = obstack_finish (&obstack); 4403 if (this_is_library_file) 4404 string = find_file (string); 4405 store_arg (string, delete_this_arg, this_is_output_file); 4406 if (this_is_output_file) 4407 outfiles[input_file_number] = string; 4408 } 4409 4410 /* Use pipe */ 4411 obstack_1grow (&obstack, c); 4412 arg_going = 1; 4413 break; 4414 4415 case '\t': 4416 case ' ': 4417 /* Space or tab ends an argument if one is pending. */ 4418 if (arg_going) 4419 { 4420 obstack_1grow (&obstack, 0); 4421 string = obstack_finish (&obstack); 4422 if (this_is_library_file) 4423 string = find_file (string); 4424 store_arg (string, delete_this_arg, this_is_output_file); 4425 if (this_is_output_file) 4426 outfiles[input_file_number] = string; 4427 } 4428 /* Reinitialize for a new argument. */ 4429 arg_going = 0; 4430 delete_this_arg = 0; 4431 this_is_output_file = 0; 4432 this_is_library_file = 0; 4433 break; 4434 4435 case '%': 4436 switch (c = *p++) 4437 { 4438 case 0: 4439 fatal ("invalid specification! Bug in cc"); 4440 4441 case 'b': 4442 obstack_grow (&obstack, input_basename, basename_length); 4443 arg_going = 1; 4444 break; 4445 4446 case 'B': 4447 obstack_grow (&obstack, input_basename, suffixed_basename_length); 4448 arg_going = 1; 4449 break; 4450 4451 case 'd': 4452 delete_this_arg = 2; 4453 break; 4454 4455 /* Dump out the directories specified with LIBRARY_PATH, 4456 followed by the absolute directories 4457 that we search for startfiles. */ 4458 case 'D': 4459 { 4460 struct prefix_list *pl = startfile_prefixes.plist; 4461 size_t bufsize = 100; 4462 char *buffer = (char *) xmalloc (bufsize); 4463 int idx; 4464 4465 for (; pl; pl = pl->next) 4466 { 4467#ifdef RELATIVE_PREFIX_NOT_LINKDIR 4468 /* Used on systems which record the specified -L dirs 4469 and use them to search for dynamic linking. */ 4470 /* Relative directories always come from -B, 4471 and it is better not to use them for searching 4472 at run time. In particular, stage1 loses. */ 4473 if (!IS_ABSOLUTE_PATHNAME (pl->prefix)) 4474 continue; 4475#endif 4476 /* Try subdirectory if there is one. */ 4477 if (multilib_dir != NULL) 4478 { 4479 if (machine_suffix) 4480 { 4481 if (strlen (pl->prefix) + strlen (machine_suffix) 4482 >= bufsize) 4483 bufsize = (strlen (pl->prefix) 4484 + strlen (machine_suffix)) * 2 + 1; 4485 buffer = (char *) xrealloc (buffer, bufsize); 4486 strcpy (buffer, pl->prefix); 4487 strcat (buffer, machine_suffix); 4488 if (is_directory (buffer, multilib_dir, 1)) 4489 { 4490 do_spec_1 ("-L", 0, NULL); 4491#ifdef SPACE_AFTER_L_OPTION 4492 do_spec_1 (" ", 0, NULL); 4493#endif 4494 do_spec_1 (buffer, 1, NULL); 4495 do_spec_1 (multilib_dir, 1, NULL); 4496 /* Make this a separate argument. */ 4497 do_spec_1 (" ", 0, NULL); 4498 } 4499 } 4500 if (!pl->require_machine_suffix) 4501 { 4502 if (is_directory (pl->prefix, multilib_dir, 1)) 4503 { 4504 do_spec_1 ("-L", 0, NULL); 4505#ifdef SPACE_AFTER_L_OPTION 4506 do_spec_1 (" ", 0, NULL); 4507#endif 4508 do_spec_1 (pl->prefix, 1, NULL); 4509 do_spec_1 (multilib_dir, 1, NULL); 4510 /* Make this a separate argument. */ 4511 do_spec_1 (" ", 0, NULL); 4512 } 4513 } 4514 } 4515 if (machine_suffix) 4516 { 4517 if (is_directory (pl->prefix, machine_suffix, 1)) 4518 { 4519 do_spec_1 ("-L", 0, NULL); 4520#ifdef SPACE_AFTER_L_OPTION 4521 do_spec_1 (" ", 0, NULL); 4522#endif 4523 do_spec_1 (pl->prefix, 1, NULL); 4524 /* Remove slash from machine_suffix. */ 4525 if (strlen (machine_suffix) >= bufsize) 4526 bufsize = strlen (machine_suffix) * 2 + 1; 4527 buffer = (char *) xrealloc (buffer, bufsize); 4528 strcpy (buffer, machine_suffix); 4529 idx = strlen (buffer); 4530 if (IS_DIR_SEPARATOR (buffer[idx - 1])) 4531 buffer[idx - 1] = 0; 4532 do_spec_1 (buffer, 1, NULL); 4533 /* Make this a separate argument. */ 4534 do_spec_1 (" ", 0, NULL); 4535 } 4536 } 4537 if (!pl->require_machine_suffix) 4538 { 4539 if (is_directory (pl->prefix, "", 1)) 4540 { 4541 do_spec_1 ("-L", 0, NULL); 4542#ifdef SPACE_AFTER_L_OPTION 4543 do_spec_1 (" ", 0, NULL); 4544#endif 4545 /* Remove slash from pl->prefix. */ 4546 if (strlen (pl->prefix) >= bufsize) 4547 bufsize = strlen (pl->prefix) * 2 + 1; 4548 buffer = (char *) xrealloc (buffer, bufsize); 4549 strcpy (buffer, pl->prefix); 4550 idx = strlen (buffer); 4551 if (IS_DIR_SEPARATOR (buffer[idx - 1])) 4552 buffer[idx - 1] = 0; 4553 do_spec_1 (buffer, 1, NULL); 4554 /* Make this a separate argument. */ 4555 do_spec_1 (" ", 0, NULL); 4556 } 4557 } 4558 } 4559 free (buffer); 4560 } 4561 break; 4562 4563 case 'e': 4564 /* %efoo means report an error with `foo' as error message 4565 and don't execute any more commands for this file. */ 4566 { 4567 const char *q = p; 4568 char *buf; 4569 while (*p != 0 && *p != '\n') 4570 p++; 4571 buf = (char *) alloca (p - q + 1); 4572 strncpy (buf, q, p - q); 4573 buf[p - q] = 0; 4574 error ("%s", buf); 4575 return -1; 4576 } 4577 break; 4578 case 'n': 4579 /* %nfoo means report an notice with `foo' on stderr. */ 4580 { 4581 const char *q = p; 4582 char *buf; 4583 while (*p != 0 && *p != '\n') 4584 p++; 4585 buf = (char *) alloca (p - q + 1); 4586 strncpy (buf, q, p - q); 4587 buf[p - q] = 0; 4588 notice ("%s\n", buf); 4589 if (*p) 4590 p++; 4591 } 4592 break; 4593 4594 case 'j': 4595 { 4596 struct stat st; 4597 4598 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined, 4599 and it is not a directory, and it is writable, use it. 4600 Otherwise, fall through and treat this like any other 4601 temporary file. */ 4602 4603 if ((!save_temps_flag) 4604 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode)) 4605 && (access (HOST_BIT_BUCKET, W_OK) == 0)) 4606 { 4607 obstack_grow (&obstack, HOST_BIT_BUCKET, 4608 strlen (HOST_BIT_BUCKET)); 4609 delete_this_arg = 0; 4610 arg_going = 1; 4611 break; 4612 } 4613 } 4614 case 'g': 4615 case 'u': 4616 case 'U': 4617 { 4618 struct temp_name *t; 4619 int suffix_length; 4620 const char *suffix = p; 4621 char *saved_suffix = NULL; 4622 4623 while (*p == '.' || ISALPHA ((unsigned char) *p)) 4624 p++; 4625 suffix_length = p - suffix; 4626 if (p[0] == '%' && p[1] == 'O') 4627 { 4628 p += 2; 4629 /* We don't support extra suffix characters after %O. */ 4630 if (*p == '.' || ISALPHA ((unsigned char) *p)) 4631 abort (); 4632 if (suffix_length == 0) 4633 suffix = TARGET_OBJECT_SUFFIX; 4634 else 4635 { 4636 saved_suffix 4637 = (char *) xmalloc (suffix_length 4638 + strlen (TARGET_OBJECT_SUFFIX)); 4639 strncpy (saved_suffix, suffix, suffix_length); 4640 strcpy (saved_suffix + suffix_length, 4641 TARGET_OBJECT_SUFFIX); 4642 } 4643 suffix_length += strlen (TARGET_OBJECT_SUFFIX); 4644 } 4645 4646 /* If the input_filename has the same suffix specified 4647 for the %g, %u, or %U, and -save-temps is specified, 4648 we could end up using that file as an intermediate 4649 thus clobbering the user's source file (.e.g., 4650 gcc -save-temps foo.s would clobber foo.s with the 4651 output of cpp0). So check for this condition and 4652 generate a temp file as the intermediate. */ 4653 4654 if (save_temps_flag) 4655 { 4656 temp_filename_length = basename_length + suffix_length; 4657 temp_filename = alloca (temp_filename_length + 1); 4658 strncpy ((char *) temp_filename, input_basename, basename_length); 4659 strncpy ((char *) temp_filename + basename_length, suffix, 4660 suffix_length); 4661 *((char *) temp_filename + temp_filename_length) = '\0'; 4662 if (strcmp (temp_filename, input_filename) != 0) 4663 { 4664 struct stat st_temp; 4665 4666 /* Note, set_input() resets input_stat_set to 0. */ 4667 if (input_stat_set == 0) 4668 { 4669 input_stat_set = stat (input_filename, &input_stat); 4670 if (input_stat_set >= 0) 4671 input_stat_set = 1; 4672 } 4673 4674 /* If we have the stat for the input_filename 4675 and we can do the stat for the temp_filename 4676 then the they could still refer to the same 4677 file if st_dev/st_ino's are the same. */ 4678 4679 if (input_stat_set != 1 4680 || stat (temp_filename, &st_temp) < 0 4681 || input_stat.st_dev != st_temp.st_dev 4682 || input_stat.st_ino != st_temp.st_ino) 4683 { 4684 temp_filename = save_string (temp_filename, 4685 temp_filename_length + 1); 4686 obstack_grow (&obstack, temp_filename, 4687 temp_filename_length); 4688 arg_going = 1; 4689 break; 4690 } 4691 } 4692 } 4693 4694 /* See if we already have an association of %g/%u/%U and 4695 suffix. */ 4696 for (t = temp_names; t; t = t->next) 4697 if (t->length == suffix_length 4698 && strncmp (t->suffix, suffix, suffix_length) == 0 4699 && t->unique == (c != 'g')) 4700 break; 4701 4702 /* Make a new association if needed. %u and %j 4703 require one. */ 4704 if (t == 0 || c == 'u' || c == 'j') 4705 { 4706 if (t == 0) 4707 { 4708 t = (struct temp_name *) xmalloc (sizeof (struct temp_name)); 4709 t->next = temp_names; 4710 temp_names = t; 4711 } 4712 t->length = suffix_length; 4713 if (saved_suffix) 4714 { 4715 t->suffix = saved_suffix; 4716 saved_suffix = NULL; 4717 } 4718 else 4719 t->suffix = save_string (suffix, suffix_length); 4720 t->unique = (c != 'g'); 4721 temp_filename = make_temp_file (t->suffix); 4722 temp_filename_length = strlen (temp_filename); 4723 t->filename = temp_filename; 4724 t->filename_length = temp_filename_length; 4725 } 4726 4727 if (saved_suffix) 4728 free (saved_suffix); 4729 4730 obstack_grow (&obstack, t->filename, t->filename_length); 4731 delete_this_arg = 1; 4732 } 4733 arg_going = 1; 4734 break; 4735 4736 case 'i': 4737 obstack_grow (&obstack, input_filename, input_filename_length); 4738 arg_going = 1; 4739 break; 4740 4741 case 'I': 4742 { 4743 struct prefix_list *pl = include_prefixes.plist; 4744 4745 if (gcc_exec_prefix) 4746 { 4747 do_spec_1 ("-iprefix", 1, NULL); 4748 /* Make this a separate argument. */ 4749 do_spec_1 (" ", 0, NULL); 4750 do_spec_1 (gcc_exec_prefix, 1, NULL); 4751 do_spec_1 (" ", 0, NULL); 4752 } 4753 4754 for (; pl; pl = pl->next) 4755 { 4756 do_spec_1 ("-isystem", 1, NULL); 4757 /* Make this a separate argument. */ 4758 do_spec_1 (" ", 0, NULL); 4759 do_spec_1 (pl->prefix, 1, NULL); 4760 do_spec_1 (" ", 0, NULL); 4761 } 4762 } 4763 break; 4764 4765 case 'o': 4766 { 4767 int max = n_infiles; 4768 max += lang_specific_extra_outfiles; 4769 4770 for (i = 0; i < max; i++) 4771 if (outfiles[i]) 4772 store_arg (outfiles[i], 0, 0); 4773 break; 4774 } 4775 4776 case 'O': 4777 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); 4778 arg_going = 1; 4779 break; 4780 4781 case 's': 4782 this_is_library_file = 1; 4783 break; 4784 4785 case 'w': 4786 this_is_output_file = 1; 4787 break; 4788 4789 case 'W': 4790 { 4791 int cur_index = argbuf_index; 4792 /* Handle the {...} following the %W. */ 4793 if (*p != '{') 4794 abort (); 4795 p = handle_braces (p + 1); 4796 if (p == 0) 4797 return -1; 4798 /* If any args were output, mark the last one for deletion 4799 on failure. */ 4800 if (argbuf_index != cur_index) 4801 record_temp_file (argbuf[argbuf_index - 1], 0, 1); 4802 break; 4803 } 4804 4805 /* %x{OPTION} records OPTION for %X to output. */ 4806 case 'x': 4807 { 4808 const char *p1 = p; 4809 char *string; 4810 4811 /* Skip past the option value and make a copy. */ 4812 if (*p != '{') 4813 abort (); 4814 while (*p++ != '}') 4815 ; 4816 string = save_string (p1 + 1, p - p1 - 2); 4817 4818 /* See if we already recorded this option. */ 4819 for (i = 0; i < n_linker_options; i++) 4820 if (! strcmp (string, linker_options[i])) 4821 { 4822 free (string); 4823 return 0; 4824 } 4825 4826 /* This option is new; add it. */ 4827 add_linker_option (string, strlen (string)); 4828 } 4829 break; 4830 4831 /* Dump out the options accumulated previously using %x. */ 4832 case 'X': 4833 for (i = 0; i < n_linker_options; i++) 4834 { 4835 do_spec_1 (linker_options[i], 1, NULL); 4836 /* Make each accumulated option a separate argument. */ 4837 do_spec_1 (" ", 0, NULL); 4838 } 4839 break; 4840 4841 /* Dump out the options accumulated previously using -Wa,. */ 4842 case 'Y': 4843 for (i = 0; i < n_assembler_options; i++) 4844 { 4845 do_spec_1 (assembler_options[i], 1, NULL); 4846 /* Make each accumulated option a separate argument. */ 4847 do_spec_1 (" ", 0, NULL); 4848 } 4849 break; 4850 4851 /* Dump out the options accumulated previously using -Wp,. */ 4852 case 'Z': 4853 for (i = 0; i < n_preprocessor_options; i++) 4854 { 4855 do_spec_1 (preprocessor_options[i], 1, NULL); 4856 /* Make each accumulated option a separate argument. */ 4857 do_spec_1 (" ", 0, NULL); 4858 } 4859 break; 4860 4861 /* Here are digits and numbers that just process 4862 a certain constant string as a spec. */ 4863 4864 case '1': 4865 value = do_spec_1 (cc1_spec, 0, NULL); 4866 if (value != 0) 4867 return value; 4868 break; 4869 4870 case '2': 4871 value = do_spec_1 (cc1plus_spec, 0, NULL); 4872 if (value != 0) 4873 return value; 4874 break; 4875 4876 case 'a': 4877 value = do_spec_1 (asm_spec, 0, NULL); 4878 if (value != 0) 4879 return value; 4880 break; 4881 4882 case 'A': 4883 value = do_spec_1 (asm_final_spec, 0, NULL); 4884 if (value != 0) 4885 return value; 4886 break; 4887 4888 case 'C': 4889 { 4890 const char *const spec 4891 = (input_file_compiler->cpp_spec 4892 ? input_file_compiler->cpp_spec 4893 : cpp_spec); 4894 value = do_spec_1 (spec, 0, NULL); 4895 if (value != 0) 4896 return value; 4897 } 4898 break; 4899 4900 case 'E': 4901 value = do_spec_1 (endfile_spec, 0, NULL); 4902 if (value != 0) 4903 return value; 4904 break; 4905 4906 case 'l': 4907 value = do_spec_1 (link_spec, 0, NULL); 4908 if (value != 0) 4909 return value; 4910 break; 4911 4912 case 'L': 4913 value = do_spec_1 (lib_spec, 0, NULL); 4914 if (value != 0) 4915 return value; 4916 break; 4917 4918 case 'G': 4919 value = do_spec_1 (libgcc_spec, 0, NULL); 4920 if (value != 0) 4921 return value; 4922 break; 4923 4924 case 'M': 4925 if (multilib_dir && strcmp (multilib_dir, ".") != 0) 4926 { 4927 char *p; 4928 const char *q; 4929 size_t len; 4930 4931 len = strlen (multilib_dir); 4932 obstack_blank (&obstack, len + 1); 4933 p = obstack_next_free (&obstack) - (len + 1); 4934 4935 *p++ = '_'; 4936 for (q = multilib_dir; *q ; ++q, ++p) 4937 *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q); 4938 } 4939 break; 4940 4941 case 'p': 4942 { 4943 char *x = (char *) alloca (strlen (cpp_predefines) + 1); 4944 char *buf = x; 4945 const char *y; 4946 4947 /* Copy all of the -D options in CPP_PREDEFINES into BUF. */ 4948 y = cpp_predefines; 4949 while (*y != 0) 4950 { 4951 if (! strncmp (y, "-D", 2)) 4952 /* Copy the whole option. */ 4953 while (*y && *y != ' ' && *y != '\t') 4954 *x++ = *y++; 4955 else if (*y == ' ' || *y == '\t') 4956 /* Copy whitespace to the result. */ 4957 *x++ = *y++; 4958 /* Don't copy other options. */ 4959 else 4960 y++; 4961 } 4962 4963 *x = 0; 4964 4965 value = do_spec_1 (buf, 0, NULL); 4966 if (value != 0) 4967 return value; 4968 } 4969 break; 4970 4971 case 'P': 4972 { 4973 char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1); 4974 char *buf = x; 4975 const char *y; 4976 4977 /* Copy all of CPP_PREDEFINES into BUF, 4978 but force them all into the reserved name space if they 4979 aren't already there. The reserved name space is all 4980 identifiers beginning with two underscores or with one 4981 underscore and a capital letter. We do the forcing by 4982 adding up to two underscores to the beginning and end 4983 of each symbol. e.g. mips, _mips, mips_, and _mips_ all 4984 become __mips__. */ 4985 y = cpp_predefines; 4986 while (*y != 0) 4987 { 4988 if (! strncmp (y, "-D", 2)) 4989 { 4990 int flag = 0; 4991 4992 *x++ = *y++; 4993 *x++ = *y++; 4994 4995 if (*y != '_' 4996 || (*(y + 1) != '_' 4997 && ! ISUPPER ((unsigned char) *(y + 1)))) 4998 { 4999 /* Stick __ at front of macro name. */ 5000 if (*y != '_') 5001 *x++ = '_'; 5002 *x++ = '_'; 5003 /* Arrange to stick __ at the end as well. */ 5004 flag = 1; 5005 } 5006 5007 /* Copy the macro name. */ 5008 while (*y && *y != '=' && *y != ' ' && *y != '\t') 5009 *x++ = *y++; 5010 5011 if (flag) 5012 { 5013 if (x[-1] != '_') 5014 { 5015 if (x[-2] != '_') 5016 *x++ = '_'; 5017 *x++ = '_'; 5018 } 5019 } 5020 5021 /* Copy the value given, if any. */ 5022 while (*y && *y != ' ' && *y != '\t') 5023 *x++ = *y++; 5024 } 5025 else if (*y == ' ' || *y == '\t') 5026 /* Copy whitespace to the result. */ 5027 *x++ = *y++; 5028 /* Don't copy -A options */ 5029 else 5030 y++; 5031 } 5032 *x++ = ' '; 5033 5034 /* Copy all of CPP_PREDEFINES into BUF, 5035 but put __ after every -D. */ 5036 y = cpp_predefines; 5037 while (*y != 0) 5038 { 5039 if (! strncmp (y, "-D", 2)) 5040 { 5041 y += 2; 5042 5043 if (*y != '_' 5044 || (*(y + 1) != '_' 5045 && ! ISUPPER ((unsigned char) *(y + 1)))) 5046 { 5047 /* Stick -D__ at front of macro name. */ 5048 *x++ = '-'; 5049 *x++ = 'D'; 5050 if (*y != '_') 5051 *x++ = '_'; 5052 *x++ = '_'; 5053 5054 /* Copy the macro name. */ 5055 while (*y && *y != '=' && *y != ' ' && *y != '\t') 5056 *x++ = *y++; 5057 5058 /* Copy the value given, if any. */ 5059 while (*y && *y != ' ' && *y != '\t') 5060 *x++ = *y++; 5061 } 5062 else 5063 { 5064 /* Do not copy this macro - we have just done it before */ 5065 while (*y && *y != ' ' && *y != '\t') 5066 y++; 5067 } 5068 } 5069 else if (*y == ' ' || *y == '\t') 5070 /* Copy whitespace to the result. */ 5071 *x++ = *y++; 5072 /* Don't copy -A options. */ 5073 else 5074 y++; 5075 } 5076 *x++ = ' '; 5077 5078 /* Copy all of the -A options in CPP_PREDEFINES into BUF. */ 5079 y = cpp_predefines; 5080 while (*y != 0) 5081 { 5082 if (! strncmp (y, "-A", 2)) 5083 /* Copy the whole option. */ 5084 while (*y && *y != ' ' && *y != '\t') 5085 *x++ = *y++; 5086 else if (*y == ' ' || *y == '\t') 5087 /* Copy whitespace to the result. */ 5088 *x++ = *y++; 5089 /* Don't copy other options. */ 5090 else 5091 y++; 5092 } 5093 5094 *x = 0; 5095 5096 value = do_spec_1 (buf, 0, NULL); 5097 if (value != 0) 5098 return value; 5099 } 5100 break; 5101 5102 case 'S': 5103 value = do_spec_1 (startfile_spec, 0, NULL); 5104 if (value != 0) 5105 return value; 5106 break; 5107 5108 /* Here we define characters other than letters and digits. */ 5109 5110 case '{': 5111 p = handle_braces (p); 5112 if (p == 0) 5113 return -1; 5114 break; 5115 5116 case '%': 5117 obstack_1grow (&obstack, '%'); 5118 break; 5119 5120 case '.': 5121 { 5122 unsigned len = 0; 5123 5124 while (p[len] && p[len] != ' ' && p[len] != '%') 5125 len++; 5126 suffix_subst = save_string (p - 1, len + 1); 5127 p += len; 5128 } 5129 break; 5130 5131 case '*': 5132 if (soft_matched_part) 5133 { 5134 do_spec_1 (soft_matched_part, 1, NULL); 5135 do_spec_1 (" ", 0, NULL); 5136 } 5137 else 5138 /* Catch the case where a spec string contains something like 5139 '%{foo:%*}'. ie there is no * in the pattern on the left 5140 hand side of the :. */ 5141 error ("spec failure: '%%*' has not been initialized by pattern match"); 5142 break; 5143 5144 /* Process a string found as the value of a spec given by name. 5145 This feature allows individual machine descriptions 5146 to add and use their own specs. 5147 %[...] modifies -D options the way %P does; 5148 %(...) uses the spec unmodified. */ 5149 case '[': 5150 error ("warning: use of obsolete %%[ operator in specs"); 5151 case '(': 5152 { 5153 const char *name = p; 5154 struct spec_list *sl; 5155 int len; 5156 5157 /* The string after the S/P is the name of a spec that is to be 5158 processed. */ 5159 while (*p && *p != ')' && *p != ']') 5160 p++; 5161 5162 /* See if it's in the list. */ 5163 for (len = p - name, sl = specs; sl; sl = sl->next) 5164 if (sl->name_len == len && !strncmp (sl->name, name, len)) 5165 { 5166 name = *(sl->ptr_spec); 5167#ifdef DEBUG_SPECS 5168 notice ("Processing spec %c%s%c, which is '%s'\n", 5169 c, sl->name, (c == '(') ? ')' : ']', name); 5170#endif 5171 break; 5172 } 5173 5174 if (sl) 5175 { 5176 if (c == '(') 5177 { 5178 value = do_spec_1 (name, 0, NULL); 5179 if (value != 0) 5180 return value; 5181 } 5182 else 5183 { 5184 char *x = (char *) alloca (strlen (name) * 2 + 1); 5185 char *buf = x; 5186 const char *y = name; 5187 int flag = 0; 5188 5189 /* Copy all of NAME into BUF, but put __ after 5190 every -D and at the end of each arg. */ 5191 while (1) 5192 { 5193 if (! strncmp (y, "-D", 2)) 5194 { 5195 *x++ = '-'; 5196 *x++ = 'D'; 5197 *x++ = '_'; 5198 *x++ = '_'; 5199 y += 2; 5200 flag = 1; 5201 continue; 5202 } 5203 else if (flag 5204 && (*y == ' ' || *y == '\t' || *y == '=' 5205 || *y == '}' || *y == 0)) 5206 { 5207 *x++ = '_'; 5208 *x++ = '_'; 5209 flag = 0; 5210 } 5211 if (*y == 0) 5212 break; 5213 else 5214 *x++ = *y++; 5215 } 5216 *x = 0; 5217 5218 value = do_spec_1 (buf, 0, NULL); 5219 if (value != 0) 5220 return value; 5221 } 5222 } 5223 5224 /* Discard the closing paren or bracket. */ 5225 if (*p) 5226 p++; 5227 } 5228 break; 5229 5230 case 'v': 5231 { 5232 int c1 = *p++; /* Select first or second version number. */ 5233 const char *v = compiler_version; 5234 const char *q; 5235 static const char zeroc = '0'; 5236 5237 /* The format of the version string is 5238 ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */ 5239 5240 /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */ 5241 while (! ISDIGIT (*v)) 5242 v++; 5243 if (v > compiler_version && v[-1] != '-') 5244 abort (); 5245 5246 /* If desired, advance to second version number. */ 5247 if (c1 >= '2') 5248 { 5249 /* Set V after the first period. */ 5250 while (ISDIGIT (*v)) 5251 v++; 5252 if (*v != '.') 5253 abort (); 5254 v++; 5255 } 5256 5257 /* If desired, advance to third version number. 5258 But don't complain if it's not present */ 5259 if (c1 == '3') 5260 { 5261 /* Set V after the second period. */ 5262 while (ISDIGIT (*v)) 5263 v++; 5264 if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-')) 5265 abort (); 5266 if (*v != 0) 5267 v++; 5268 } 5269 5270 /* Set Q at the next period or at the end. */ 5271 q = v; 5272 while (ISDIGIT (*q)) 5273 q++; 5274 if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-') 5275 abort (); 5276 5277 if (q > v) 5278 /* Put that part into the command. */ 5279 obstack_grow (&obstack, v, q - v); 5280 else 5281 /* Default to "0" */ 5282 obstack_grow (&obstack, &zeroc, 1); 5283 arg_going = 1; 5284 } 5285 break; 5286 5287 case '|': 5288 if (input_from_pipe) 5289 do_spec_1 ("-", 0, NULL); 5290 break; 5291 5292 default: 5293 error ("spec failure: unrecognized spec option '%c'", c); 5294 break; 5295 } 5296 break; 5297 5298 case '\\': 5299 /* Backslash: treat next character as ordinary. */ 5300 c = *p++; 5301 5302 /* fall through */ 5303 default: 5304 /* Ordinary character: put it into the current argument. */ 5305 obstack_1grow (&obstack, c); 5306 arg_going = 1; 5307 } 5308 5309 /* End of string. */ 5310 return 0; 5311} 5312 5313/* Return 0 if we call do_spec_1 and that returns -1. */ 5314 5315static const char * 5316handle_braces (p) 5317 const char *p; 5318{ 5319 const char *filter, *body = NULL, *endbody = NULL; 5320 int pipe_p = 0; 5321 int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */ 5322 int negate; 5323 int suffix; 5324 int include_blanks = 1; 5325 int elide_switch = 0; 5326 int ordered = 0; 5327 5328 if (*p == '^') 5329 { 5330 /* A '^' after the open-brace means to not give blanks before args. */ 5331 include_blanks = 0; 5332 ++p; 5333 } 5334 5335 if (*p == '|') 5336 { 5337 /* A `|' after the open-brace means, 5338 if the test fails, output a single minus sign rather than nothing. 5339 This is used in %{|!pipe:...}. */ 5340 pipe_p = 1; 5341 ++p; 5342 } 5343 5344 if (*p == '<') 5345 { 5346 /* A `<' after the open-brace means that the switch should be 5347 removed from the command-line. */ 5348 elide_switch = 1; 5349 ++p; 5350 } 5351 5352next_member: 5353 negate = suffix = 0; 5354 5355 if (*p == '!') 5356 /* A `!' after the open-brace negates the condition: 5357 succeed if the specified switch is not present. */ 5358 negate = 1, ++p; 5359 5360 if (*p == '.') 5361 /* A `.' after the open-brace means test against the current suffix. */ 5362 { 5363 if (pipe_p) 5364 abort (); 5365 5366 suffix = 1; 5367 ++p; 5368 } 5369 5370 if (elide_switch && (negate || pipe_p || suffix)) 5371 { 5372 /* It doesn't make sense to mix elision with other flags. We 5373 could fatal() here, but the standard seems to be to abort. */ 5374 abort (); 5375 } 5376 5377 next_ampersand: 5378 filter = p; 5379 while (*p != ':' && *p != '}' && *p != '|' && *p != '&') 5380 p++; 5381 5382 if (*p == '|' && (pipe_p || ordered)) 5383 abort (); 5384 5385 if (!body) 5386 { 5387 if (*p != '}' && *p != '&') 5388 { 5389 int count = 1; 5390 const char *q = p; 5391 5392 while (*q++ != ':') 5393 continue; 5394 body = q; 5395 5396 while (count > 0) 5397 { 5398 if (*q == '{') 5399 count++; 5400 else if (*q == '}') 5401 count--; 5402 else if (*q == 0) 5403 fatal ("mismatched braces in specs"); 5404 q++; 5405 } 5406 endbody = q; 5407 } 5408 else 5409 body = p, endbody = p + 1; 5410 } 5411 5412 if (suffix) 5413 { 5414 int found = (input_suffix != 0 5415 && (long) strlen (input_suffix) == (long) (p - filter) 5416 && strncmp (input_suffix, filter, p - filter) == 0); 5417 5418 if (body[0] == '}') 5419 abort (); 5420 5421 if (negate != found 5422 && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0) 5423 return 0; 5424 } 5425 else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&')) 5426 { 5427 /* Substitute all matching switches as separate args. */ 5428 int i; 5429 5430 for (i = 0; i < n_switches; i++) 5431 if (!strncmp (switches[i].part1, filter, p - 1 - filter) 5432 && check_live_switch (i, p - 1 - filter)) 5433 { 5434 if (elide_switch) 5435 { 5436 switches[i].live_cond = SWITCH_IGNORE; 5437 switches[i].validated = 1; 5438 } 5439 else 5440 ordered = 1, switches[i].ordering = 1; 5441 } 5442 } 5443 else 5444 { 5445 /* Test for presence of the specified switch. */ 5446 int i; 5447 int present = 0; 5448 5449 /* If name specified ends in *, as in {x*:...}, 5450 check for %* and handle that case. */ 5451 if (p[-1] == '*' && !negate) 5452 { 5453 int substitution; 5454 const char *r = body; 5455 5456 /* First see whether we have %*. */ 5457 substitution = 0; 5458 while (r < endbody) 5459 { 5460 if (*r == '%' && r[1] == '*') 5461 substitution = 1; 5462 r++; 5463 } 5464 /* If we do, handle that case. */ 5465 if (substitution) 5466 { 5467 /* Substitute all matching switches as separate args. 5468 But do this by substituting for %* 5469 in the text that follows the colon. */ 5470 5471 unsigned hard_match_len = p - filter - 1; 5472 char *string = save_string (body, endbody - body - 1); 5473 5474 for (i = 0; i < n_switches; i++) 5475 if (!strncmp (switches[i].part1, filter, hard_match_len) 5476 && check_live_switch (i, -1)) 5477 { 5478 do_spec_1 (string, 0, &switches[i].part1[hard_match_len]); 5479 /* Pass any arguments this switch has. */ 5480 give_switch (i, 1, 1); 5481 suffix_subst = NULL; 5482 } 5483 5484 /* We didn't match. Try again. */ 5485 if (*p++ == '|') 5486 goto next_member; 5487 return endbody; 5488 } 5489 } 5490 5491 /* If name specified ends in *, as in {x*:...}, 5492 check for presence of any switch name starting with x. */ 5493 if (p[-1] == '*') 5494 { 5495 for (i = 0; i < n_switches; i++) 5496 { 5497 unsigned hard_match_len = p - filter - 1; 5498 5499 if (!strncmp (switches[i].part1, filter, hard_match_len) 5500 && check_live_switch (i, hard_match_len)) 5501 { 5502 present = 1; 5503 break; 5504 } 5505 } 5506 } 5507 /* Otherwise, check for presence of exact name specified. */ 5508 else 5509 { 5510 for (i = 0; i < n_switches; i++) 5511 { 5512 if (!strncmp (switches[i].part1, filter, p - filter) 5513 && switches[i].part1[p - filter] == 0 5514 && check_live_switch (i, -1)) 5515 { 5516 present = 1; 5517 break; 5518 } 5519 } 5520 } 5521 5522 /* If it is as desired (present for %{s...}, absent for %{!s...}) 5523 then substitute either the switch or the specified 5524 conditional text. */ 5525 if (present != negate) 5526 { 5527 if (elide_switch) 5528 { 5529 switches[i].live_cond = SWITCH_IGNORE; 5530 switches[i].validated = 1; 5531 } 5532 else if (ordered || *p == '&') 5533 ordered = 1, switches[i].ordering = 1; 5534 else if (*p == '}') 5535 give_switch (i, 0, include_blanks); 5536 else 5537 /* Even if many alternatives are matched, only output once. */ 5538 true_once = 1; 5539 } 5540 else if (pipe_p) 5541 { 5542 /* Here if a %{|...} conditional fails: output a minus sign, 5543 which means "standard output" or "standard input". */ 5544 do_spec_1 ("-", 0, NULL); 5545 return endbody; 5546 } 5547 } 5548 5549 /* We didn't match; try again. */ 5550 if (*p++ == '|') 5551 goto next_member; 5552 5553 if (p[-1] == '&') 5554 { 5555 body = 0; 5556 goto next_ampersand; 5557 } 5558 5559 if (ordered) 5560 { 5561 int i; 5562 /* Doing this set of switches later preserves their command-line 5563 ordering. This is needed for e.g. -U, -D and -A. */ 5564 for (i = 0; i < n_switches; i++) 5565 if (switches[i].ordering == 1) 5566 { 5567 switches[i].ordering = 0; 5568 give_switch (i, 0, include_blanks); 5569 } 5570 } 5571 /* Process the spec just once, regardless of match count. */ 5572 else if (true_once) 5573 { 5574 if (do_spec_1 (save_string (body, endbody - body - 1), 5575 0, NULL) < 0) 5576 return 0; 5577 } 5578 5579 return endbody; 5580} 5581 5582/* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch 5583 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*} 5584 spec, or -1 if either exact match or %* is used. 5585 5586 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch 5587 whose value does not begin with "no-" is obsoleted by the same value 5588 with the "no-", similarly for a switch with the "no-" prefix. */ 5589 5590static int 5591check_live_switch (switchnum, prefix_length) 5592 int switchnum; 5593 int prefix_length; 5594{ 5595 const char *name = switches[switchnum].part1; 5596 int i; 5597 5598 /* In the common case of {<at-most-one-letter>*}, a negating 5599 switch would always match, so ignore that case. We will just 5600 send the conflicting switches to the compiler phase. */ 5601 if (prefix_length >= 0 && prefix_length <= 1) 5602 return 1; 5603 5604 /* If we already processed this switch and determined if it was 5605 live or not, return our past determination. */ 5606 if (switches[switchnum].live_cond != 0) 5607 return switches[switchnum].live_cond > 0; 5608 5609 /* Now search for duplicate in a manner that depends on the name. */ 5610 switch (*name) 5611 { 5612 case 'O': 5613 for (i = switchnum + 1; i < n_switches; i++) 5614 if (switches[i].part1[0] == 'O') 5615 { 5616 switches[switchnum].validated = 1; 5617 switches[switchnum].live_cond = SWITCH_FALSE; 5618 return 0; 5619 } 5620 break; 5621 5622 case 'W': case 'f': case 'm': 5623 if (! strncmp (name + 1, "no-", 3)) 5624 { 5625 /* We have Xno-YYY, search for XYYY. */ 5626 for (i = switchnum + 1; i < n_switches; i++) 5627 if (switches[i].part1[0] == name[0] 5628 && ! strcmp (&switches[i].part1[1], &name[4])) 5629 { 5630 switches[switchnum].validated = 1; 5631 switches[switchnum].live_cond = SWITCH_FALSE; 5632 return 0; 5633 } 5634 } 5635 else 5636 { 5637 /* We have XYYY, search for Xno-YYY. */ 5638 for (i = switchnum + 1; i < n_switches; i++) 5639 if (switches[i].part1[0] == name[0] 5640 && switches[i].part1[1] == 'n' 5641 && switches[i].part1[2] == 'o' 5642 && switches[i].part1[3] == '-' 5643 && !strcmp (&switches[i].part1[4], &name[1])) 5644 { 5645 switches[switchnum].validated = 1; 5646 switches[switchnum].live_cond = SWITCH_FALSE; 5647 return 0; 5648 } 5649 } 5650 break; 5651 } 5652 5653 /* Otherwise the switch is live. */ 5654 switches[switchnum].live_cond = SWITCH_LIVE; 5655 return 1; 5656} 5657 5658/* Pass a switch to the current accumulating command 5659 in the same form that we received it. 5660 SWITCHNUM identifies the switch; it is an index into 5661 the vector of switches gcc received, which is `switches'. 5662 This cannot fail since it never finishes a command line. 5663 5664 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. 5665 5666 If INCLUDE_BLANKS is nonzero, then we include blanks before each argument 5667 of the switch. */ 5668 5669static void 5670give_switch (switchnum, omit_first_word, include_blanks) 5671 int switchnum; 5672 int omit_first_word; 5673 int include_blanks; 5674{ 5675 if (switches[switchnum].live_cond == SWITCH_IGNORE) 5676 return; 5677 5678 if (!omit_first_word) 5679 { 5680 do_spec_1 ("-", 0, NULL); 5681 do_spec_1 (switches[switchnum].part1, 1, NULL); 5682 } 5683 5684 if (switches[switchnum].args != 0) 5685 { 5686 const char **p; 5687 for (p = switches[switchnum].args; *p; p++) 5688 { 5689 const char *arg = *p; 5690 5691 if (include_blanks) 5692 do_spec_1 (" ", 0, NULL); 5693 if (suffix_subst) 5694 { 5695 unsigned length = strlen (arg); 5696 int dot = 0; 5697 5698 while (length-- && !IS_DIR_SEPARATOR (arg[length])) 5699 if (arg[length] == '.') 5700 { 5701 ((char *)arg)[length] = 0; 5702 dot = 1; 5703 break; 5704 } 5705 do_spec_1 (arg, 1, NULL); 5706 if (dot) 5707 ((char *)arg)[length] = '.'; 5708 do_spec_1 (suffix_subst, 1, NULL); 5709 } 5710 else 5711 do_spec_1 (arg, 1, NULL); 5712 } 5713 } 5714 5715 do_spec_1 (" ", 0, NULL); 5716 switches[switchnum].validated = 1; 5717} 5718 5719/* Search for a file named NAME trying various prefixes including the 5720 user's -B prefix and some standard ones. 5721 Return the absolute file name found. If nothing is found, return NAME. */ 5722 5723static const char * 5724find_file (name) 5725 const char *name; 5726{ 5727 char *newname; 5728 5729 /* Try multilib_dir if it is defined. */ 5730 if (multilib_dir != NULL) 5731 { 5732 const char *const try = ACONCAT ((multilib_dir, dir_separator_str, name, NULL)); 5733 5734 newname = find_a_file (&startfile_prefixes, try, R_OK); 5735 5736 /* If we don't find it in the multi library dir, then fall 5737 through and look for it in the normal places. */ 5738 if (newname != NULL) 5739 return newname; 5740 } 5741 5742 newname = find_a_file (&startfile_prefixes, name, R_OK); 5743 return newname ? newname : name; 5744} 5745 5746/* Determine whether a directory exists. If LINKER, return 0 for 5747 certain fixed names not needed by the linker. If not LINKER, it is 5748 only important to return 0 if the host machine has a small ARG_MAX 5749 limit. */ 5750 5751static int 5752is_directory (path1, path2, linker) 5753 const char *path1; 5754 const char *path2; 5755 int linker; 5756{ 5757 int len1 = strlen (path1); 5758 int len2 = strlen (path2); 5759 char *path = (char *) alloca (3 + len1 + len2); 5760 char *cp; 5761 struct stat st; 5762 5763#ifndef SMALL_ARG_MAX 5764 if (! linker) 5765 return 1; 5766#endif 5767 5768 /* Construct the path from the two parts. Ensure the string ends with "/.". 5769 The resulting path will be a directory even if the given path is a 5770 symbolic link. */ 5771 memcpy (path, path1, len1); 5772 memcpy (path + len1, path2, len2); 5773 cp = path + len1 + len2; 5774 if (!IS_DIR_SEPARATOR (cp[-1])) 5775 *cp++ = DIR_SEPARATOR; 5776 *cp++ = '.'; 5777 *cp = '\0'; 5778 5779#ifndef FREEBSD_NATIVE 5780 /* Exclude directories that the linker is known to search. */ 5781 if (linker 5782 && ((cp - path == 6 5783 && strcmp (path, concat (dir_separator_str, "lib", 5784 dir_separator_str, ".", NULL)) == 0) 5785 || (cp - path == 10 5786 && strcmp (path, concat (dir_separator_str, "usr", 5787 dir_separator_str, "lib", 5788 dir_separator_str, ".", NULL)) == 0))) 5789 return 0; 5790#endif /* FREEBSD_NATIVE */ 5791 5792 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode)); 5793} 5794 5795/* Set up the various global variables to indicate that we're processing 5796 the input file named FILENAME. */ 5797 5798void 5799set_input (filename) 5800 const char *filename; 5801{ 5802 const char *p; 5803 5804 input_filename = filename; 5805 input_filename_length = strlen (input_filename); 5806 5807 input_basename = input_filename; 5808#ifdef HAVE_DOS_BASED_FILE_SYSTEM 5809 /* Skip drive name so 'x:foo' is handled properly. */ 5810 if (input_basename[1] == ':') 5811 input_basename += 2; 5812#endif 5813 for (p = input_basename; *p; p++) 5814 if (IS_DIR_SEPARATOR (*p)) 5815 input_basename = p + 1; 5816 5817 /* Find a suffix starting with the last period, 5818 and set basename_length to exclude that suffix. */ 5819 basename_length = strlen (input_basename); 5820 suffixed_basename_length = basename_length; 5821 p = input_basename + basename_length; 5822 while (p != input_basename && *p != '.') 5823 --p; 5824 if (*p == '.' && p != input_basename) 5825 { 5826 basename_length = p - input_basename; 5827 input_suffix = p + 1; 5828 } 5829 else 5830 input_suffix = ""; 5831 5832 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then 5833 we will need to do a stat on the input_filename. The 5834 INPUT_STAT_SET signals that the stat is needed. */ 5835 input_stat_set = 0; 5836} 5837 5838/* On fatal signals, delete all the temporary files. */ 5839 5840static void 5841fatal_error (signum) 5842 int signum; 5843{ 5844 signal (signum, SIG_DFL); 5845 delete_failure_queue (); 5846 delete_temp_files (); 5847 /* Get the same signal again, this time not handled, 5848 so its normal effect occurs. */ 5849 kill (getpid (), signum); 5850} 5851 5852extern int main PARAMS ((int, const char *const *)); 5853 5854int 5855main (argc, argv) 5856 int argc; 5857 const char *const *argv; 5858{ 5859 size_t i; 5860 int value; 5861 int linker_was_run = 0; 5862 char *explicit_link_files; 5863 char *specs_file; 5864 const char *p; 5865 struct user_specs *uptr; 5866 5867 p = argv[0] + strlen (argv[0]); 5868 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) 5869 --p; 5870 programname = p; 5871 5872 xmalloc_set_program_name (programname); 5873 5874#ifdef GCC_DRIVER_HOST_INITIALIZATION 5875 /* Perform host dependent initialization when needed. */ 5876 GCC_DRIVER_HOST_INITIALIZATION; 5877#endif 5878 5879 gcc_init_libintl (); 5880 5881 if (signal (SIGINT, SIG_IGN) != SIG_IGN) 5882 signal (SIGINT, fatal_error); 5883#ifdef SIGHUP 5884 if (signal (SIGHUP, SIG_IGN) != SIG_IGN) 5885 signal (SIGHUP, fatal_error); 5886#endif 5887 if (signal (SIGTERM, SIG_IGN) != SIG_IGN) 5888 signal (SIGTERM, fatal_error); 5889#ifdef SIGPIPE 5890 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN) 5891 signal (SIGPIPE, fatal_error); 5892#endif 5893#ifdef SIGCHLD 5894 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will 5895 receive the signal. A different setting is inheritable */ 5896 signal (SIGCHLD, SIG_DFL); 5897#endif 5898 5899 argbuf_length = 10; 5900 argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *)); 5901 5902 obstack_init (&obstack); 5903 5904 /* Build multilib_select, et. al from the separate lines that make up each 5905 multilib selection. */ 5906 { 5907 const char *const *q = multilib_raw; 5908 int need_space; 5909 5910 obstack_init (&multilib_obstack); 5911 while ((p = *q++) != (char *) 0) 5912 obstack_grow (&multilib_obstack, p, strlen (p)); 5913 5914 obstack_1grow (&multilib_obstack, 0); 5915 multilib_select = obstack_finish (&multilib_obstack); 5916 5917 q = multilib_matches_raw; 5918 while ((p = *q++) != (char *) 0) 5919 obstack_grow (&multilib_obstack, p, strlen (p)); 5920 5921 obstack_1grow (&multilib_obstack, 0); 5922 multilib_matches = obstack_finish (&multilib_obstack); 5923 5924 q = multilib_exclusions_raw; 5925 while ((p = *q++) != (char *) 0) 5926 obstack_grow (&multilib_obstack, p, strlen (p)); 5927 5928 obstack_1grow (&multilib_obstack, 0); 5929 multilib_exclusions = obstack_finish (&multilib_obstack); 5930 5931 need_space = FALSE; 5932 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++) 5933 { 5934 if (need_space) 5935 obstack_1grow (&multilib_obstack, ' '); 5936 obstack_grow (&multilib_obstack, 5937 multilib_defaults_raw[i], 5938 strlen (multilib_defaults_raw[i])); 5939 need_space = TRUE; 5940 } 5941 5942 obstack_1grow (&multilib_obstack, 0); 5943 multilib_defaults = obstack_finish (&multilib_obstack); 5944 } 5945 5946 /* Set up to remember the pathname of gcc and any options 5947 needed for collect. We use argv[0] instead of programname because 5948 we need the complete pathname. */ 5949 obstack_init (&collect_obstack); 5950 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1); 5951 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1); 5952 putenv (obstack_finish (&collect_obstack)); 5953 5954#ifdef INIT_ENVIRONMENT 5955 /* Set up any other necessary machine specific environment variables. */ 5956 putenv (INIT_ENVIRONMENT); 5957#endif 5958 5959 /* Make a table of what switches there are (switches, n_switches). 5960 Make a table of specified input files (infiles, n_infiles). 5961 Decode switches that are handled locally. */ 5962 5963 process_command (argc, argv); 5964 5965 /* Initialize the vector of specs to just the default. 5966 This means one element containing 0s, as a terminator. */ 5967 5968 compilers = (struct compiler *) xmalloc (sizeof default_compilers); 5969 memcpy ((char *) compilers, (char *) default_compilers, 5970 sizeof default_compilers); 5971 n_compilers = n_default_compilers; 5972 5973 /* Read specs from a file if there is one. */ 5974 5975#ifdef FREEBSD_NATIVE 5976 just_machine_suffix = ""; 5977#else /* FREEBSD_NATIVE */ 5978 machine_suffix = concat (spec_machine, dir_separator_str, 5979 spec_version, dir_separator_str, NULL); 5980 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL); 5981#endif /* FREEBSD_NATIVE */ 5982 5983 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK); 5984 /* Read the specs file unless it is a default one. */ 5985 if (specs_file != 0 && strcmp (specs_file, "specs")) 5986 read_specs (specs_file, TRUE); 5987 else 5988 init_spec (); 5989 5990 /* We need to check standard_exec_prefix/just_machine_suffix/specs 5991 for any override of as, ld and libraries. */ 5992 specs_file = (char *) alloca (strlen (FBSD_DATA_PREFIX) 5993 + strlen (just_machine_suffix) 5994 + sizeof ("specs")); 5995 5996 strcpy (specs_file, FBSD_DATA_PREFIX); 5997 strcat (specs_file, just_machine_suffix); 5998 strcat (specs_file, "specs"); 5999 if (access (specs_file, R_OK) == 0) 6000 read_specs (specs_file, TRUE); 6001 6002 /* If not cross-compiling, look for startfiles in the standard places. */ 6003 if (*cross_compile == '0') 6004 { 6005 if (*md_exec_prefix) 6006 { 6007 add_prefix (&exec_prefixes, md_exec_prefix, "GCC", 6008 PREFIX_PRIORITY_LAST, 0, NULL); 6009 add_prefix (&startfile_prefixes, md_exec_prefix, "GCC", 6010 PREFIX_PRIORITY_LAST, 0, NULL); 6011 } 6012 6013 if (*md_startfile_prefix) 6014 add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC", 6015 PREFIX_PRIORITY_LAST, 0, NULL); 6016 6017 if (*md_startfile_prefix_1) 6018 add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC", 6019 PREFIX_PRIORITY_LAST, 0, NULL); 6020 6021 /* If standard_startfile_prefix is relative, base it on 6022 standard_exec_prefix. This lets us move the installed tree 6023 as a unit. If GCC_EXEC_PREFIX is defined, base 6024 standard_startfile_prefix on that as well. */ 6025 if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)) 6026 add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS", 6027 PREFIX_PRIORITY_LAST, 0, NULL); 6028 else 6029 { 6030 if (gcc_exec_prefix) 6031 add_prefix (&startfile_prefixes, 6032 concat (gcc_exec_prefix, machine_suffix, 6033 standard_startfile_prefix, NULL), 6034 NULL, PREFIX_PRIORITY_LAST, 0, NULL); 6035 add_prefix (&startfile_prefixes, 6036 concat (standard_exec_prefix, 6037 machine_suffix, 6038 standard_startfile_prefix, NULL), 6039 NULL, PREFIX_PRIORITY_LAST, 0, NULL); 6040 } 6041 6042#ifndef FREEBSD_NATIVE 6043 add_prefix (&startfile_prefixes, standard_startfile_prefix_1, 6044 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); 6045 add_prefix (&startfile_prefixes, standard_startfile_prefix_2, 6046 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); 6047#endif /* not FREEBSD_NATIVE */ 6048#if 0 /* Can cause surprises, and one can use -B./ instead. */ 6049 add_prefix (&startfile_prefixes, "./", NULL, 6050 PREFIX_PRIORITY_LAST, 1, NULL); 6051#endif 6052 } 6053 else 6054 { 6055 if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix) 6056 && gcc_exec_prefix) 6057 add_prefix (&startfile_prefixes, 6058 concat (gcc_exec_prefix, machine_suffix, 6059 standard_startfile_prefix, NULL), 6060 "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); 6061#ifdef CROSS_STARTFILE_PREFIX 6062 add_prefix (&startfile_prefixes, CROSS_STARTFILE_PREFIX, "BINUTILS", 6063 PREFIX_PRIORITY_LAST, 0, NULL); 6064#endif 6065 } 6066 6067 /* Process any user specified specs in the order given on the command 6068 line. */ 6069 for (uptr = user_specs_head; uptr; uptr = uptr->next) 6070 { 6071 char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK); 6072 read_specs (filename ? filename : uptr->filename, FALSE); 6073 } 6074 6075 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */ 6076 if (gcc_exec_prefix) 6077 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str, 6078 spec_version, dir_separator_str, NULL); 6079 6080 /* Now we have the specs. 6081 Set the `valid' bits for switches that match anything in any spec. */ 6082 6083 validate_all_switches (); 6084 6085 /* Now that we have the switches and the specs, set 6086 the subdirectory based on the options. */ 6087 set_multilib_dir (); 6088 6089 /* Warn about any switches that no pass was interested in. */ 6090 6091 for (i = 0; (int) i < n_switches; i++) 6092 if (! switches[i].validated) 6093 error ("unrecognized option `-%s'", switches[i].part1); 6094 6095 /* Obey some of the options. */ 6096 6097 if (print_search_dirs) 6098 { 6099 printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix); 6100 printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0)); 6101 printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0)); 6102 return (0); 6103 } 6104 6105 if (print_file_name) 6106 { 6107 printf ("%s\n", find_file (print_file_name)); 6108 return (0); 6109 } 6110 6111 if (print_prog_name) 6112 { 6113 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK); 6114 printf ("%s\n", (newname ? newname : print_prog_name)); 6115 return (0); 6116 } 6117 6118 if (print_multi_lib) 6119 { 6120 print_multilib_info (); 6121 return (0); 6122 } 6123 6124 if (print_multi_directory) 6125 { 6126 if (multilib_dir == NULL) 6127 printf (".\n"); 6128 else 6129 printf ("%s\n", multilib_dir); 6130 return (0); 6131 } 6132 6133 if (target_help_flag) 6134 { 6135 /* Print if any target specific options. */ 6136 6137 /* We do not exit here. Instead we have created a fake input file 6138 called 'target-dummy' which needs to be compiled, and we pass this 6139 on to the various sub-processes, along with the --target-help 6140 switch. */ 6141 } 6142 6143 if (print_help_list) 6144 { 6145 display_help (); 6146 6147 if (! verbose_flag) 6148 { 6149 printf (_("\nFor bug reporting instructions, please see:\n")); 6150 printf ("%s.\n", GCCBUGURL); 6151 6152 return (0); 6153 } 6154 6155 /* We do not exit here. Instead we have created a fake input file 6156 called 'help-dummy' which needs to be compiled, and we pass this 6157 on the various sub-processes, along with the --help switch. */ 6158 } 6159 6160 if (verbose_flag) 6161 { 6162 int n; 6163 const char *thrmod; 6164 6165 notice ("Configured with: %s\n", configuration_arguments); 6166 6167#ifdef THREAD_MODEL_SPEC 6168 /* We could have defined THREAD_MODEL_SPEC to "%*" by default, 6169 but there's no point in doing all this processing just to get 6170 thread_model back. */ 6171 obstack_init (&obstack); 6172 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model); 6173 obstack_1grow (&obstack, '\0'); 6174 thrmod = obstack_finish (&obstack); 6175#else 6176 thrmod = thread_model; 6177#endif 6178 6179 notice ("Thread model: %s\n", thrmod); 6180 6181 /* compiler_version is truncated at the first space when initialized 6182 from version string, so truncate version_string at the first space 6183 before comparing. */ 6184 for (n = 0; version_string[n]; n++) 6185 if (version_string[n] == ' ') 6186 break; 6187 6188 if (! strncmp (version_string, compiler_version, n) 6189 && compiler_version[n] == 0) 6190 notice ("gcc version %s\n", version_string); 6191 else 6192 notice ("gcc driver version %s executing gcc version %s\n", 6193 version_string, compiler_version); 6194 6195 if (n_infiles == 0) 6196 return (0); 6197 } 6198 6199 if (n_infiles == added_libraries) 6200 fatal ("No input files specified"); 6201 6202 /* Make a place to record the compiler output file names 6203 that correspond to the input files. */ 6204 6205 i = n_infiles; 6206 i += lang_specific_extra_outfiles; 6207 outfiles = (const char **) xcalloc (i, sizeof (char *)); 6208 6209 /* Record which files were specified explicitly as link input. */ 6210 6211 explicit_link_files = xcalloc (1, n_infiles); 6212 6213 for (i = 0; (int) i < n_infiles; i++) 6214 { 6215 int this_file_error = 0; 6216 6217 /* Tell do_spec what to substitute for %i. */ 6218 6219 input_file_number = i; 6220 set_input (infiles[i].name); 6221 6222 /* Use the same thing in %o, unless cp->spec says otherwise. */ 6223 6224 outfiles[i] = input_filename; 6225 6226 /* Figure out which compiler from the file's suffix. */ 6227 6228 input_file_compiler 6229 = lookup_compiler (infiles[i].name, input_filename_length, 6230 infiles[i].language); 6231 6232 if (input_file_compiler) 6233 { 6234 /* Ok, we found an applicable compiler. Run its spec. */ 6235 6236 if (input_file_compiler->spec[0] == '#') 6237 { 6238 error ("%s: %s compiler not installed on this system", 6239 input_filename, &input_file_compiler->spec[1]); 6240 this_file_error = 1; 6241 } 6242 else 6243 { 6244 value = do_spec (input_file_compiler->spec); 6245 if (value < 0) 6246 this_file_error = 1; 6247 } 6248 } 6249 6250 /* If this file's name does not contain a recognized suffix, 6251 record it as explicit linker input. */ 6252 6253 else 6254 explicit_link_files[i] = 1; 6255 6256 /* Clear the delete-on-failure queue, deleting the files in it 6257 if this compilation failed. */ 6258 6259 if (this_file_error) 6260 { 6261 delete_failure_queue (); 6262 error_count++; 6263 } 6264 /* If this compilation succeeded, don't delete those files later. */ 6265 clear_failure_queue (); 6266 } 6267 6268 /* Reset the output file name to the first input file name, for use 6269 with %b in LINK_SPEC on a target that prefers not to emit a.out 6270 by default. */ 6271 if (n_infiles > 0) 6272 set_input (infiles[0].name); 6273 6274 if (error_count == 0) 6275 { 6276 /* Make sure INPUT_FILE_NUMBER points to first available open 6277 slot. */ 6278 input_file_number = n_infiles; 6279 if (lang_specific_pre_link ()) 6280 error_count++; 6281 } 6282 6283 /* Run ld to link all the compiler output files. */ 6284 6285 if (error_count == 0) 6286 { 6287 int tmp = execution_count; 6288 6289 /* We'll use ld if we can't find collect2. */ 6290 if (! strcmp (linker_name_spec, "collect2")) 6291 { 6292 char *s = find_a_file (&exec_prefixes, "collect2", X_OK); 6293 if (s == NULL) 6294 linker_name_spec = "ld"; 6295 } 6296 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables 6297 for collect. */ 6298 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH"); 6299 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV); 6300 6301 value = do_spec (link_command_spec); 6302 if (value < 0) 6303 error_count = 1; 6304 linker_was_run = (tmp != execution_count); 6305 } 6306 6307 /* If options said don't run linker, 6308 complain about input files to be given to the linker. */ 6309 6310 if (! linker_was_run && error_count == 0) 6311 for (i = 0; (int) i < n_infiles; i++) 6312 if (explicit_link_files[i]) 6313 error ("%s: linker input file unused because linking not done", 6314 outfiles[i]); 6315 6316 /* Delete some or all of the temporary files we made. */ 6317 6318 if (error_count) 6319 delete_failure_queue (); 6320 delete_temp_files (); 6321 6322 if (print_help_list) 6323 { 6324 printf (("\nFor bug reporting instructions, please see:\n")); 6325 printf ("%s\n", GCCBUGURL); 6326 } 6327 6328 return (signal_count != 0 ? 2 6329 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1) 6330 : 0); 6331} 6332 6333/* Find the proper compilation spec for the file name NAME, 6334 whose length is LENGTH. LANGUAGE is the specified language, 6335 or 0 if this file is to be passed to the linker. */ 6336 6337static struct compiler * 6338lookup_compiler (name, length, language) 6339 const char *name; 6340 size_t length; 6341 const char *language; 6342{ 6343 struct compiler *cp; 6344 6345 /* If this was specified by the user to be a linker input, indicate that. */ 6346 if (language != 0 && language[0] == '*') 6347 return 0; 6348 6349 /* Otherwise, look for the language, if one is spec'd. */ 6350 if (language != 0) 6351 { 6352 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6353 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language)) 6354 return cp; 6355 6356 error ("language %s not recognized", language); 6357 return 0; 6358 } 6359 6360 /* Look for a suffix. */ 6361 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6362 { 6363 if (/* The suffix `-' matches only the file name `-'. */ 6364 (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) 6365 || (strlen (cp->suffix) < length 6366 /* See if the suffix matches the end of NAME. */ 6367 && !strcmp (cp->suffix, 6368 name + length - strlen (cp->suffix)) 6369 )) 6370 break; 6371 } 6372 6373#if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM) 6374 /* look again, but case-insensitively this time. */ 6375 if (cp < compilers) 6376 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) 6377 { 6378 if (/* The suffix `-' matches only the file name `-'. */ 6379 (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) 6380 || (strlen (cp->suffix) < length 6381 /* See if the suffix matches the end of NAME. */ 6382 && ((!strcmp (cp->suffix, 6383 name + length - strlen (cp->suffix)) 6384 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ")) 6385 && !strcasecmp (cp->suffix, 6386 name + length - strlen (cp->suffix))) 6387 )) 6388 break; 6389 } 6390#endif 6391 6392 if (cp >= compilers) 6393 { 6394 if (cp->spec[0] != '@') 6395 /* A non-alias entry: return it. */ 6396 return cp; 6397 6398 /* An alias entry maps a suffix to a language. 6399 Search for the language; pass 0 for NAME and LENGTH 6400 to avoid infinite recursion if language not found. */ 6401 return lookup_compiler (NULL, 0, cp->spec + 1); 6402 } 6403 return 0; 6404} 6405 6406static char * 6407save_string (s, len) 6408 const char *s; 6409 int len; 6410{ 6411 char *result = xmalloc (len + 1); 6412 6413 memcpy (result, s, len); 6414 result[len] = 0; 6415 return result; 6416} 6417 6418void 6419pfatal_with_name (name) 6420 const char *name; 6421{ 6422 perror_with_name (name); 6423 delete_temp_files (); 6424 exit (1); 6425} 6426 6427static void 6428perror_with_name (name) 6429 const char *name; 6430{ 6431 error ("%s: %s", name, xstrerror (errno)); 6432} 6433 6434static void 6435pfatal_pexecute (errmsg_fmt, errmsg_arg) 6436 const char *errmsg_fmt; 6437 const char *errmsg_arg; 6438{ 6439 if (errmsg_arg) 6440 { 6441 int save_errno = errno; 6442 6443 /* Space for trailing '\0' is in %s. */ 6444 char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg)); 6445 sprintf (msg, errmsg_fmt, errmsg_arg); 6446 errmsg_fmt = msg; 6447 6448 errno = save_errno; 6449 } 6450 6451 pfatal_with_name (errmsg_fmt); 6452} 6453 6454/* Output an error message and exit */ 6455 6456void 6457fancy_abort () 6458{ 6459 fatal ("internal gcc abort"); 6460} 6461 6462/* Output an error message and exit */ 6463 6464void 6465fatal VPARAMS ((const char *msgid, ...)) 6466{ 6467 VA_OPEN (ap, msgid); 6468 VA_FIXEDARG (ap, const char *, msgid); 6469 6470 fprintf (stderr, "%s: ", programname); 6471 vfprintf (stderr, _(msgid), ap); 6472 VA_CLOSE (ap); 6473 fprintf (stderr, "\n"); 6474 delete_temp_files (); 6475 exit (1); 6476} 6477 6478void 6479error VPARAMS ((const char *msgid, ...)) 6480{ 6481 VA_OPEN (ap, msgid); 6482 VA_FIXEDARG (ap, const char *, msgid); 6483 6484 fprintf (stderr, "%s: ", programname); 6485 vfprintf (stderr, _(msgid), ap); 6486 VA_CLOSE (ap); 6487 6488 fprintf (stderr, "\n"); 6489} 6490 6491static void 6492notice VPARAMS ((const char *msgid, ...)) 6493{ 6494 VA_OPEN (ap, msgid); 6495 VA_FIXEDARG (ap, const char *, msgid); 6496 6497 vfprintf (stderr, _(msgid), ap); 6498 VA_CLOSE (ap); 6499} 6500 6501static void 6502validate_all_switches () 6503{ 6504 struct compiler *comp; 6505 const char *p; 6506 char c; 6507 struct spec_list *spec; 6508 6509 for (comp = compilers; comp->spec; comp++) 6510 { 6511 p = comp->spec; 6512 while ((c = *p++)) 6513 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{'))) 6514 /* We have a switch spec. */ 6515 validate_switches (p + 1); 6516 } 6517 6518 /* Look through the linked list of specs read from the specs file. */ 6519 for (spec = specs; spec; spec = spec->next) 6520 { 6521 p = *(spec->ptr_spec); 6522 while ((c = *p++)) 6523 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{'))) 6524 /* We have a switch spec. */ 6525 validate_switches (p + 1); 6526 } 6527 6528 p = link_command_spec; 6529 while ((c = *p++)) 6530 if (c == '%' && (*p == '{' || (*p == 'W' && *++p == '{'))) 6531 /* We have a switch spec. */ 6532 validate_switches (p + 1); 6533} 6534 6535/* Look at the switch-name that comes after START 6536 and mark as valid all supplied switches that match it. */ 6537 6538static void 6539validate_switches (start) 6540 const char *start; 6541{ 6542 const char *p = start; 6543 const char *filter; 6544 int i; 6545 int suffix; 6546 6547 if (*p == '|') 6548 ++p; 6549 6550next_member: 6551 if (*p == '!') 6552 ++p; 6553 6554 suffix = 0; 6555 if (*p == '.') 6556 suffix = 1, ++p; 6557 6558 filter = p; 6559 while (*p != ':' && *p != '}' && *p != '|' && *p != '&') 6560 p++; 6561 6562 if (suffix) 6563 ; 6564 else if (p[-1] == '*') 6565 { 6566 /* Mark all matching switches as valid. */ 6567 for (i = 0; i < n_switches; i++) 6568 if (!strncmp (switches[i].part1, filter, p - filter - 1)) 6569 switches[i].validated = 1; 6570 } 6571 else 6572 { 6573 /* Mark an exact matching switch as valid. */ 6574 for (i = 0; i < n_switches; i++) 6575 { 6576 if (!strncmp (switches[i].part1, filter, p - filter) 6577 && switches[i].part1[p - filter] == 0) 6578 switches[i].validated = 1; 6579 } 6580 } 6581 6582 if (*p++ == '|' || p[-1] == '&') 6583 goto next_member; 6584} 6585 6586/* Check whether a particular argument was used. The first time we 6587 canonicalize the switches to keep only the ones we care about. */ 6588 6589static int 6590used_arg (p, len) 6591 const char *p; 6592 int len; 6593{ 6594 struct mswitchstr 6595 { 6596 const char *str; 6597 const char *replace; 6598 int len; 6599 int rep_len; 6600 }; 6601 6602 static struct mswitchstr *mswitches; 6603 static int n_mswitches; 6604 int i, j; 6605 6606 if (!mswitches) 6607 { 6608 struct mswitchstr *matches; 6609 const char *q; 6610 int cnt = 0; 6611 6612 /* Break multilib_matches into the component strings of string 6613 and replacement string. */ 6614 for (q = multilib_matches; *q != '\0'; q++) 6615 if (*q == ';') 6616 cnt++; 6617 6618 matches = 6619 (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt); 6620 i = 0; 6621 q = multilib_matches; 6622 while (*q != '\0') 6623 { 6624 matches[i].str = q; 6625 while (*q != ' ') 6626 { 6627 if (*q == '\0') 6628 abort (); 6629 q++; 6630 } 6631 matches[i].len = q - matches[i].str; 6632 6633 matches[i].replace = ++q; 6634 while (*q != ';' && *q != '\0') 6635 { 6636 if (*q == ' ') 6637 abort (); 6638 q++; 6639 } 6640 matches[i].rep_len = q - matches[i].replace; 6641 i++; 6642 if (*q == ';') 6643 q++; 6644 } 6645 6646 /* Now build a list of the replacement string for switches that we care 6647 about. Make sure we allocate at least one entry. This prevents 6648 xmalloc from calling fatal, and prevents us from re-executing this 6649 block of code. */ 6650 mswitches 6651 = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr)) 6652 * (n_switches ? n_switches : 1)); 6653 for (i = 0; i < n_switches; i++) 6654 { 6655 int xlen = strlen (switches[i].part1); 6656 for (j = 0; j < cnt; j++) 6657 if (xlen == matches[j].len 6658 && ! strncmp (switches[i].part1, matches[j].str, xlen)) 6659 { 6660 mswitches[n_mswitches].str = matches[j].replace; 6661 mswitches[n_mswitches].len = matches[j].rep_len; 6662 mswitches[n_mswitches].replace = (char *) 0; 6663 mswitches[n_mswitches].rep_len = 0; 6664 n_mswitches++; 6665 break; 6666 } 6667 } 6668 } 6669 6670 for (i = 0; i < n_mswitches; i++) 6671 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len)) 6672 return 1; 6673 6674 return 0; 6675} 6676 6677static int 6678default_arg (p, len) 6679 const char *p; 6680 int len; 6681{ 6682 const char *start, *end; 6683 6684 for (start = multilib_defaults; *start != '\0'; start = end + 1) 6685 { 6686 while (*start == ' ' || *start == '\t') 6687 start++; 6688 6689 if (*start == '\0') 6690 break; 6691 6692 for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++) 6693 ; 6694 6695 if ((end - start) == len && strncmp (p, start, len) == 0) 6696 return 1; 6697 6698 if (*end == '\0') 6699 break; 6700 } 6701 6702 return 0; 6703} 6704 6705/* Work out the subdirectory to use based on the options. The format of 6706 multilib_select is a list of elements. Each element is a subdirectory 6707 name followed by a list of options followed by a semicolon. The format 6708 of multilib_exclusions is the same, but without the preceding 6709 directory. First gcc will check the exclusions, if none of the options 6710 beginning with an exclamation point are present, and all of the other 6711 options are present, then we will ignore this completely. Passing 6712 that, gcc will consider each multilib_select in turn using the same 6713 rules for matching the options. If a match is found, that subdirectory 6714 will be used. */ 6715 6716static void 6717set_multilib_dir () 6718{ 6719 const char *p; 6720 unsigned int this_path_len; 6721 const char *this_path, *this_arg; 6722 int not_arg; 6723 int ok; 6724 6725 p = multilib_exclusions; 6726 while (*p != '\0') 6727 { 6728 /* Ignore newlines. */ 6729 if (*p == '\n') 6730 { 6731 ++p; 6732 continue; 6733 } 6734 6735 /* Check the arguments. */ 6736 ok = 1; 6737 while (*p != ';') 6738 { 6739 if (*p == '\0') 6740 abort (); 6741 6742 if (! ok) 6743 { 6744 ++p; 6745 continue; 6746 } 6747 6748 this_arg = p; 6749 while (*p != ' ' && *p != ';') 6750 { 6751 if (*p == '\0') 6752 abort (); 6753 ++p; 6754 } 6755 6756 if (*this_arg != '!') 6757 not_arg = 0; 6758 else 6759 { 6760 not_arg = 1; 6761 ++this_arg; 6762 } 6763 6764 ok = used_arg (this_arg, p - this_arg); 6765 if (not_arg) 6766 ok = ! ok; 6767 6768 if (*p == ' ') 6769 ++p; 6770 } 6771 6772 if (ok) 6773 return; 6774 6775 ++p; 6776 } 6777 6778 p = multilib_select; 6779 while (*p != '\0') 6780 { 6781 /* Ignore newlines. */ 6782 if (*p == '\n') 6783 { 6784 ++p; 6785 continue; 6786 } 6787 6788 /* Get the initial path. */ 6789 this_path = p; 6790 while (*p != ' ') 6791 { 6792 if (*p == '\0') 6793 abort (); 6794 ++p; 6795 } 6796 this_path_len = p - this_path; 6797 6798 /* Check the arguments. */ 6799 ok = 1; 6800 ++p; 6801 while (*p != ';') 6802 { 6803 if (*p == '\0') 6804 abort (); 6805 6806 if (! ok) 6807 { 6808 ++p; 6809 continue; 6810 } 6811 6812 this_arg = p; 6813 while (*p != ' ' && *p != ';') 6814 { 6815 if (*p == '\0') 6816 abort (); 6817 ++p; 6818 } 6819 6820 if (*this_arg != '!') 6821 not_arg = 0; 6822 else 6823 { 6824 not_arg = 1; 6825 ++this_arg; 6826 } 6827 6828 /* If this is a default argument, we can just ignore it. 6829 This is true even if this_arg begins with '!'. Beginning 6830 with '!' does not mean that this argument is necessarily 6831 inappropriate for this library: it merely means that 6832 there is a more specific library which uses this 6833 argument. If this argument is a default, we need not 6834 consider that more specific library. */ 6835 if (! default_arg (this_arg, p - this_arg)) 6836 { 6837 ok = used_arg (this_arg, p - this_arg); 6838 if (not_arg) 6839 ok = ! ok; 6840 } 6841 6842 if (*p == ' ') 6843 ++p; 6844 } 6845 6846 if (ok) 6847 { 6848 if (this_path_len != 1 6849 || this_path[0] != '.') 6850 { 6851 char *new_multilib_dir = xmalloc (this_path_len + 1); 6852 strncpy (new_multilib_dir, this_path, this_path_len); 6853 new_multilib_dir[this_path_len] = '\0'; 6854 multilib_dir = new_multilib_dir; 6855 } 6856 break; 6857 } 6858 6859 ++p; 6860 } 6861} 6862 6863/* Print out the multiple library subdirectory selection 6864 information. This prints out a series of lines. Each line looks 6865 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is 6866 required. Only the desired options are printed out, the negative 6867 matches. The options are print without a leading dash. There are 6868 no spaces to make it easy to use the information in the shell. 6869 Each subdirectory is printed only once. This assumes the ordering 6870 generated by the genmultilib script. Also, we leave out ones that match 6871 the exclusions. */ 6872 6873static void 6874print_multilib_info () 6875{ 6876 const char *p = multilib_select; 6877 const char *last_path = 0, *this_path; 6878 int skip; 6879 unsigned int last_path_len = 0; 6880 6881 while (*p != '\0') 6882 { 6883 skip = 0; 6884 /* Ignore newlines. */ 6885 if (*p == '\n') 6886 { 6887 ++p; 6888 continue; 6889 } 6890 6891 /* Get the initial path. */ 6892 this_path = p; 6893 while (*p != ' ') 6894 { 6895 if (*p == '\0') 6896 abort (); 6897 ++p; 6898 } 6899 6900 /* Check for matches with the multilib_exclusions. We don't bother 6901 with the '!' in either list. If any of the exclusion rules match 6902 all of its options with the select rule, we skip it. */ 6903 { 6904 const char *e = multilib_exclusions; 6905 const char *this_arg; 6906 6907 while (*e != '\0') 6908 { 6909 int m = 1; 6910 /* Ignore newlines. */ 6911 if (*e == '\n') 6912 { 6913 ++e; 6914 continue; 6915 } 6916 6917 /* Check the arguments. */ 6918 while (*e != ';') 6919 { 6920 const char *q; 6921 int mp = 0; 6922 6923 if (*e == '\0') 6924 abort (); 6925 6926 if (! m) 6927 { 6928 ++e; 6929 continue; 6930 } 6931 6932 this_arg = e; 6933 6934 while (*e != ' ' && *e != ';') 6935 { 6936 if (*e == '\0') 6937 abort (); 6938 ++e; 6939 } 6940 6941 q = p + 1; 6942 while (*q != ';') 6943 { 6944 const char *arg; 6945 int len = e - this_arg; 6946 6947 if (*q == '\0') 6948 abort (); 6949 6950 arg = q; 6951 6952 while (*q != ' ' && *q != ';') 6953 { 6954 if (*q == '\0') 6955 abort (); 6956 ++q; 6957 } 6958 6959 if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) || 6960 default_arg (this_arg, e - this_arg)) 6961 { 6962 mp = 1; 6963 break; 6964 } 6965 6966 if (*q == ' ') 6967 ++q; 6968 } 6969 6970 if (! mp) 6971 m = 0; 6972 6973 if (*e == ' ') 6974 ++e; 6975 } 6976 6977 if (m) 6978 { 6979 skip = 1; 6980 break; 6981 } 6982 6983 if (*e != '\0') 6984 ++e; 6985 } 6986 } 6987 6988 if (! skip) 6989 { 6990 /* If this is a duplicate, skip it. */ 6991 skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len 6992 && ! strncmp (last_path, this_path, last_path_len)); 6993 6994 last_path = this_path; 6995 last_path_len = p - this_path; 6996 } 6997 6998 /* If this directory requires any default arguments, we can skip 6999 it. We will already have printed a directory identical to 7000 this one which does not require that default argument. */ 7001 if (! skip) 7002 { 7003 const char *q; 7004 7005 q = p + 1; 7006 while (*q != ';') 7007 { 7008 const char *arg; 7009 7010 if (*q == '\0') 7011 abort (); 7012 7013 if (*q == '!') 7014 arg = NULL; 7015 else 7016 arg = q; 7017 7018 while (*q != ' ' && *q != ';') 7019 { 7020 if (*q == '\0') 7021 abort (); 7022 ++q; 7023 } 7024 7025 if (arg != NULL 7026 && default_arg (arg, q - arg)) 7027 { 7028 skip = 1; 7029 break; 7030 } 7031 7032 if (*q == ' ') 7033 ++q; 7034 } 7035 } 7036 7037 if (! skip) 7038 { 7039 const char *p1; 7040 7041 for (p1 = last_path; p1 < p; p1++) 7042 putchar (*p1); 7043 putchar (';'); 7044 } 7045 7046 ++p; 7047 while (*p != ';') 7048 { 7049 int use_arg; 7050 7051 if (*p == '\0') 7052 abort (); 7053 7054 if (skip) 7055 { 7056 ++p; 7057 continue; 7058 } 7059 7060 use_arg = *p != '!'; 7061 7062 if (use_arg) 7063 putchar ('@'); 7064 7065 while (*p != ' ' && *p != ';') 7066 { 7067 if (*p == '\0') 7068 abort (); 7069 if (use_arg) 7070 putchar (*p); 7071 ++p; 7072 } 7073 7074 if (*p == ' ') 7075 ++p; 7076 } 7077 7078 if (! skip) 7079 { 7080 /* If there are extra options, print them now. */ 7081 if (multilib_extra && *multilib_extra) 7082 { 7083 int print_at = TRUE; 7084 const char *q; 7085 7086 for (q = multilib_extra; *q != '\0'; q++) 7087 { 7088 if (*q == ' ') 7089 print_at = TRUE; 7090 else 7091 { 7092 if (print_at) 7093 putchar ('@'); 7094 putchar (*q); 7095 print_at = FALSE; 7096 } 7097 } 7098 } 7099 7100 putchar ('\n'); 7101 } 7102 7103 ++p; 7104 } 7105} 7106