/* Compiler driver program that can handle many languages. Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc. This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING. If not, write to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. This paragraph is here to try to keep Sun CC from dying. The number of chars here seems crucial!!!! */ /* This program is the user interface to the C compiler and possibly to other compilers. It is used because compilation is a complicated procedure which involves running several programs and passing temporary files between them, forwarding the users switches to those programs selectively, and deleting the temporary files at the end. CC recognizes how to compile each input file by suffixes in the file names. Once it knows which kind of compilation to perform, the procedure for compilation is specified by a string called a "spec". */ /* A Short Introduction to Adding a Command-Line Option. Before adding a command-line option, consider if it is really necessary. Each additional command-line option adds complexity and is difficult to remove in subsequent versions. In the following, consider adding the command-line argument `--bar'. 1. Each command-line option is specified in the specs file. The notation is described below in the comment entitled "The Specs Language". Read it. 2. In this file, add an entry to "option_map" equating the long `--' argument version and any shorter, single letter version. Read the comments in the declaration of "struct option_map" for an explanation. Do not omit the first `-'. 3. Look in the "specs" file to determine which program or option list should be given the argument, e.g., "cc1_options". Add the appropriate syntax for the shorter option version to the corresponding "const char *" entry in this file. Omit the first `-' from the option. For example, use `-bar', rather than `--bar'. 4. If the argument takes an argument, e.g., `--baz argument1', modify either DEFAULT_SWITCH_TAKES_ARG or DEFAULT_WORD_SWITCH_TAKES_ARG in this file. Omit the first `-' from `--baz'. 5. Document the option in this file's display_help(). If the option is passed to a subprogram, modify its corresponding function, e.g., cppinit.c:print_help() or toplev.c:display_help(), instead. 6. Compile and test. Make sure that your new specs file is being read. For example, use a debugger to investigate the value of "specs_file" in main(). */ #include "config.h" #include "system.h" #include #if ! defined( SIGCHLD ) && defined( SIGCLD ) # define SIGCHLD SIGCLD #endif #include "obstack.h" #include "intl.h" #include "prefix.h" #include "gcc.h" #ifdef VMS #define exit __posix_exit #endif #ifdef HAVE_SYS_RESOURCE_H #include #endif #if defined (HAVE_DECL_GETRUSAGE) && !HAVE_DECL_GETRUSAGE extern int getrusage PARAMS ((int, struct rusage *)); #endif /* By default there is no special suffix for target executables. */ /* FIXME: when autoconf is fixed, remove the host check - dj */ #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX) #define HAVE_TARGET_EXECUTABLE_SUFFIX #else #undef TARGET_EXECUTABLE_SUFFIX #define TARGET_EXECUTABLE_SUFFIX "" #endif /* By default there is no special suffix for host executables. */ #ifdef HOST_EXECUTABLE_SUFFIX #define HAVE_HOST_EXECUTABLE_SUFFIX #else #define HOST_EXECUTABLE_SUFFIX "" #endif /* By default, the suffix for target object files is ".o". */ #ifdef TARGET_OBJECT_SUFFIX #define HAVE_TARGET_OBJECT_SUFFIX #else #define TARGET_OBJECT_SUFFIX ".o" #endif #ifndef VMS /* FIXME: the location independence code for VMS is hairier than this, and hasn't been written. */ #ifndef DIR_UP #define DIR_UP ".." #endif /* DIR_UP */ #endif /* VMS */ static const char dir_separator_str[] = { DIR_SEPARATOR, 0 }; #define obstack_chunk_alloc xmalloc #define obstack_chunk_free free #ifndef GET_ENV_PATH_LIST #define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0) #endif /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */ #ifndef LIBRARY_PATH_ENV #define LIBRARY_PATH_ENV "LIBRARY_PATH" #endif #ifndef HAVE_KILL #define kill(p,s) raise(s) #endif /* If a stage of compilation returns an exit status >= 1, compilation of that file ceases. */ #define MIN_FATAL_STATUS 1 /* Flag saying to pass the greatest exit code returned by a sub-process to the calling program. */ static int pass_exit_codes; /* Definition of string containing the arguments given to configure. */ #include "configargs.h" /* Flag saying to print the directories gcc will search through looking for programs, libraries, etc. */ static int print_search_dirs; /* Flag saying to print the full filename of this file as found through our usual search mechanism. */ static const char *print_file_name = NULL; /* As print_file_name, but search for executable file. */ static const char *print_prog_name = NULL; /* Flag saying to print the relative path we'd use to find libgcc.a given the current compiler flags. */ static int print_multi_directory; /* Flag saying to print the list of subdirectories and compiler flags used to select them in a standard form. */ static int print_multi_lib; /* Flag saying to print the command line options understood by gcc and its sub-processes. */ static int print_help_list; /* Flag indicating whether we should print the command and arguments */ static int verbose_flag; /* Flag indicating to print target specific command line options. */ static int target_help_flag; /* Flag indicating whether we should report subprocess execution times (if this is supported by the system - see pexecute.c). */ static int report_times; /* Nonzero means write "temp" files in source directory and use the source file's name in them, and don't delete them. */ static int save_temps_flag; /* The compiler version. */ static const char *compiler_version; /* The target version specified with -V */ static const char *spec_version = DEFAULT_TARGET_VERSION; /* The target machine specified with -b. */ static const char *spec_machine = DEFAULT_TARGET_MACHINE; /* Nonzero if cross-compiling. When -b is used, the value comes from the `specs' file. */ #ifdef CROSS_COMPILE static const char *cross_compile = "1"; #else static const char *cross_compile = "0"; #endif #ifdef MODIFY_TARGET_NAME /* Information on how to alter the target name based on a command-line switch. The only case we support now is simply appending or deleting a string to or from the end of the first part of the configuration name. */ const struct modify_target { const char *const sw; const enum add_del {ADD, DELETE} add_del; const char *const str; } modify_target[] = MODIFY_TARGET_NAME; #endif /* The number of errors that have occurred; the link phase will not be run if this is non-zero. */ static int error_count = 0; /* Greatest exit code of sub-processes that has been encountered up to now. */ static int greatest_status = 1; /* This is the obstack which we use to allocate many strings. */ static struct obstack obstack; /* This is the obstack to build an environment variable to pass to collect2 that describes all of the relevant switches of what to pass the compiler in building the list of pointers to constructors and destructors. */ static struct obstack collect_obstack; /* These structs are used to collect resource usage information for subprocesses. */ #ifdef HAVE_GETRUSAGE static struct rusage rus, prus; #endif /* Forward declaration for prototypes. */ struct path_prefix; static void init_spec PARAMS ((void)); #ifndef VMS static char **split_directories PARAMS ((const char *, int *)); static void free_split_directories PARAMS ((char **)); static char *make_relative_prefix PARAMS ((const char *, const char *, const char *)); #endif /* VMS */ static void store_arg PARAMS ((const char *, int, int)); static char *load_specs PARAMS ((const char *)); static void read_specs PARAMS ((const char *, int)); static void set_spec PARAMS ((const char *, const char *)); static struct compiler *lookup_compiler PARAMS ((const char *, size_t, const char *)); static char *build_search_list PARAMS ((struct path_prefix *, const char *, int)); static void putenv_from_prefixes PARAMS ((struct path_prefix *, const char *)); static int access_check PARAMS ((const char *, int)); static char *find_a_file PARAMS ((struct path_prefix *, const char *, int)); static void add_prefix PARAMS ((struct path_prefix *, const char *, const char *, int, int, int *)); static void translate_options PARAMS ((int *, const char *const **)); static char *skip_whitespace PARAMS ((char *)); static void delete_if_ordinary PARAMS ((const char *)); static void delete_temp_files PARAMS ((void)); static void delete_failure_queue PARAMS ((void)); static void clear_failure_queue PARAMS ((void)); static int check_live_switch PARAMS ((int, int)); static const char *handle_braces PARAMS ((const char *)); static char *save_string PARAMS ((const char *, int)); static int do_spec_1 PARAMS ((const char *, int, const char *)); static const char *find_file PARAMS ((const char *)); static int is_directory PARAMS ((const char *, const char *, int)); static void validate_switches PARAMS ((const char *)); static void validate_all_switches PARAMS ((void)); static void give_switch PARAMS ((int, int, int)); static int used_arg PARAMS ((const char *, int)); static int default_arg PARAMS ((const char *, int)); static void set_multilib_dir PARAMS ((void)); static void print_multilib_info PARAMS ((void)); static void perror_with_name PARAMS ((const char *)); static void pfatal_pexecute PARAMS ((const char *, const char *)) ATTRIBUTE_NORETURN; static void notice PARAMS ((const char *, ...)) ATTRIBUTE_PRINTF_1; static void display_help PARAMS ((void)); static void add_preprocessor_option PARAMS ((const char *, int)); static void add_assembler_option PARAMS ((const char *, int)); static void add_linker_option PARAMS ((const char *, int)); static void process_command PARAMS ((int, const char *const *)); static int execute PARAMS ((void)); static void clear_args PARAMS ((void)); static void fatal_error PARAMS ((int)); static void set_input PARAMS ((const char *)); #ifdef ENABLE_SHARED_LIBGCC static void init_gcc_specs PARAMS ((struct obstack *, const char *, const char *)); #endif #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX) static const char *convert_filename PARAMS ((const char *, int)); #endif /* The Specs Language Specs are strings containing lines, each of which (if not blank) is made up of a program name, and arguments separated by spaces. The program name must be exact and start from root, since no path is searched and it is unreliable to depend on the current working directory. Redirection of input or output is not supported; the subprograms must accept filenames saying what files to read and write. In addition, the specs can contain %-sequences to substitute variable text or for conditional text. Here is a table of all defined %-sequences. Note that spaces are not generated automatically around the results of expanding these sequences; therefore, you can concatenate them together or with constant text in a single argument. %% substitute one % into the program name or argument. %i substitute the name of the input file being processed. %b substitute the basename of the input file being processed. This is the substring up to (and not including) the last period and not including the directory. %B same as %b, but include the file suffix (text after the last period). %gSUFFIX substitute a file name that has suffix SUFFIX and is chosen once per compilation, and mark the argument a la %d. To reduce exposure to denial-of-service attacks, the file name is now chosen in a way that is hard to predict even when previously chosen file names are known. For example, `%g.s ... %g.o ... %g.s' might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches the regexp "[.A-Za-z]*%O"; "%O" is treated exactly as if it had been pre-processed. Previously, %g was simply substituted with a file name chosen once per compilation, without regard to any appended suffix (which was therefore treated just like ordinary text), making such attacks more likely to succeed. %uSUFFIX like %g, but generates a new temporary file name even if %uSUFFIX was already seen. %USUFFIX substitutes the last file name generated with %uSUFFIX, generating a new one if there is no such last file name. In the absence of any %uSUFFIX, this is just like %gSUFFIX, except they don't share the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s' would involve the generation of two distinct file names, one for each `%g.s' and another for each `%U.s'. Previously, %U was simply substituted with a file name chosen for the previous %u, without regard to any appended suffix. %jSUFFIX substitutes the name of the HOST_BIT_BUCKET, if any, and if it is writable, and if save-temps is off; otherwise, substitute the name of a temporary file, just like %u. This temporary file is not meant for communication between processes, but rather as a junk disposal mechanism. %.SUFFIX substitutes .SUFFIX for the suffixes of a matched switch's args when it is subsequently output with %*. SUFFIX is terminated by the next space or %. %d marks the argument containing or following the %d as a temporary file name, so that that file will be deleted if CC exits successfully. Unlike %g, this contributes no text to the argument. %w marks the argument containing or following the %w as the "output file" of this compilation. This puts the argument into the sequence of arguments that %o will substitute later. %W{...} like %{...} but mark last argument supplied within as a file to be deleted on failure. %o substitutes the names of all the output files, with spaces automatically placed around them. You should write spaces around the %o as well or the results are undefined. %o is for use in the specs for running the linker. Input files whose names have no recognized suffix are not compiled at all, but they are included among the output files, so they will be linked. %O substitutes the suffix for object files. Note that this is handled specially when it immediately follows %g, %u, or %U (with or without a suffix argument) because of the need for those to form complete file names. The handling is such that %O is treated exactly as if it had already been substituted, except that %g, %u, and %U do not currently support additional SUFFIX characters following %O as they would following, for example, `.o'. %p substitutes the standard macro predefinitions for the current target machine. Use this when running cpp. %P like %p, but puts `__' before and after the name of each macro. (Except macros that already have __.) This is for ANSI C. %I Substitute a -iprefix option made from GCC_EXEC_PREFIX. %s current argument is the name of a library or startup file of some sort. Search for that file in a standard list of directories and substitute the full name found. %eSTR Print STR as an error message. STR is terminated by a newline. Use this when inconsistent options are detected. %nSTR Print STR as an notice. STR is terminated by a newline. %x{OPTION} Accumulate an option for %X. %X Output the accumulated linker options specified by compilations. %Y Output the accumulated assembler options specified by compilations. %Z Output the accumulated preprocessor options specified by compilations. %v1 Substitute the major version number of GCC. (For version 2.5.3, this is 2.) %v2 Substitute the minor version number of GCC. (For version 2.5.3, this is 5.) %v3 Substitute the patch level number of GCC. (For version 2.5.3, this is 3.) %a process ASM_SPEC as a spec. This allows config.h to specify part of the spec for running as. %A process ASM_FINAL_SPEC as a spec. A capital A is actually used here. This can be used to run a post-processor after the assembler has done its job. %D Dump out a -L option for each directory in startfile_prefixes. If multilib_dir is set, extra entries are generated with it affixed. %l process LINK_SPEC as a spec. %L process LIB_SPEC as a spec. %G process LIBGCC_SPEC as a spec. %M output multilib_dir with directory separators replaced with "_"; if multilib_dir is not set or is ".", output "". %S process STARTFILE_SPEC as a spec. A capital S is actually used here. %E process ENDFILE_SPEC as a spec. A capital E is actually used here. %c process SIGNED_CHAR_SPEC as a spec. %C process CPP_SPEC as a spec. %1 process CC1_SPEC as a spec. %2 process CC1PLUS_SPEC as a spec. %| output "-" if the input for the current command is coming from a pipe. %* substitute the variable part of a matched option. (See below.) Note that each comma in the substituted string is replaced by a single space. %{S} substitutes the -S switch, if that switch was given to CC. If that switch was not specified, this substitutes nothing. Here S is a metasyntactic variable. %{S*} substitutes all the switches specified to CC whose names start with -S. This is used for -o, -I, etc; switches that take arguments. CC considers `-o foo' as being one switch whose name starts with `o'. %{o*} would substitute this text, including the space; thus, two arguments would be generated. %{^S*} likewise, but don't put a blank between a switch and any args. %{S*&T*} likewise, but preserve order of S and T options (the order of S and T in the spec is not significant). Can be any number of ampersand-separated variables; for each the wild card is optional. Useful for CPP as %{D*&U*&A*}. %{S*:X} substitutes X if one or more switches whose names start with -S are specified to CC. Note that the tail part of the -S option (i.e. the part matched by the `*') will be substituted for each occurrence of %* within X. %{ argument required. o => argument optional. j => join argument to equivalent, making one word. * => require other text after NAME as an argument. */ const char *const arg_info; }; /* This is the table of mappings. Mappings are tried sequentially for each option encountered; the first one that matches, wins. */ static const struct option_map option_map[] = { {"--all-warnings", "-Wall", 0}, {"--ansi", "-ansi", 0}, {"--assemble", "-S", 0}, {"--assert", "-A", "a"}, {"--classpath", "-fclasspath=", "aj"}, {"--CLASSPATH", "-fCLASSPATH=", "aj"}, {"--comments", "-C", 0}, {"--compile", "-c", 0}, {"--debug", "-g", "oj"}, {"--define-macro", "-D", "aj"}, {"--dependencies", "-M", 0}, {"--dump", "-d", "a"}, {"--dumpbase", "-dumpbase", "a"}, {"--entry", "-e", 0}, {"--extra-warnings", "-W", 0}, {"--for-assembler", "-Wa", "a"}, {"--for-linker", "-Xlinker", "a"}, {"--force-link", "-u", "a"}, {"--imacros", "-imacros", "a"}, {"--include", "-include", "a"}, {"--include-barrier", "-I-", 0}, {"--include-directory", "-I", "aj"}, {"--include-directory-after", "-idirafter", "a"}, {"--include-prefix", "-iprefix", "a"}, {"--include-with-prefix", "-iwithprefix", "a"}, {"--include-with-prefix-before", "-iwithprefixbefore", "a"}, {"--include-with-prefix-after", "-iwithprefix", "a"}, {"--language", "-x", "a"}, {"--library-directory", "-L", "a"}, {"--machine", "-m", "aj"}, {"--machine-", "-m", "*j"}, {"--no-line-commands", "-P", 0}, {"--no-precompiled-includes", "-noprecomp", 0}, {"--no-standard-includes", "-nostdinc", 0}, {"--no-standard-libraries", "-nostdlib", 0}, {"--no-warnings", "-w", 0}, {"--optimize", "-O", "oj"}, {"--output", "-o", "a"}, {"--output-class-directory", "-foutput-class-dir=", "ja"}, {"--param", "--param", "a"}, {"--pedantic", "-pedantic", 0}, {"--pedantic-errors", "-pedantic-errors", 0}, {"--pipe", "-pipe", 0}, {"--prefix", "-B", "a"}, {"--preprocess", "-E", 0}, {"--print-search-dirs", "-print-search-dirs", 0}, {"--print-file-name", "-print-file-name=", "aj"}, {"--print-libgcc-file-name", "-print-libgcc-file-name", 0}, {"--print-missing-file-dependencies", "-MG", 0}, {"--print-multi-lib", "-print-multi-lib", 0}, {"--print-multi-directory", "-print-multi-directory", 0}, {"--print-prog-name", "-print-prog-name=", "aj"}, {"--profile", "-p", 0}, {"--profile-blocks", "-a", 0}, {"--quiet", "-q", 0}, {"--save-temps", "-save-temps", 0}, {"--shared", "-shared", 0}, {"--silent", "-q", 0}, {"--specs", "-specs=", "aj"}, {"--static", "-static", 0}, {"--std", "-std=", "aj"}, {"--symbolic", "-symbolic", 0}, {"--target", "-b", "a"}, {"--time", "-time", 0}, {"--trace-includes", "-H", 0}, {"--traditional", "-traditional", 0}, {"--traditional-cpp", "-traditional-cpp", 0}, {"--trigraphs", "-trigraphs", 0}, {"--undefine-macro", "-U", "aj"}, {"--use-version", "-V", "a"}, {"--user-dependencies", "-MM", 0}, {"--verbose", "-v", 0}, {"--version", "-dumpversion", 0}, {"--warn-", "-W", "*j"}, {"--write-dependencies", "-MD", 0}, {"--write-user-dependencies", "-MMD", 0}, {"--", "-f", "*j"} }; #ifdef TARGET_OPTION_TRANSLATE_TABLE static const struct { const char *const option_found; const char *const replacements; } target_option_translations[] = { TARGET_OPTION_TRANSLATE_TABLE, { 0, 0 } }; #endif /* Translate the options described by *ARGCP and *ARGVP. Make a new vector and store it back in *ARGVP, and store its length in *ARGVC. */ static void translate_options (argcp, argvp) int *argcp; const char *const **argvp; { int i; int argc = *argcp; const char *const *argv = *argvp; int newvsize = (argc + 2) * 2 * sizeof (const char *); const char **newv = (const char **) xmalloc (newvsize); int newindex = 0; i = 0; newv[newindex++] = argv[i++]; while (i < argc) { #ifdef TARGET_OPTION_TRANSLATE_TABLE int tott_idx; for (tott_idx = 0; target_option_translations[tott_idx].option_found; tott_idx++) { if (strcmp (target_option_translations[tott_idx].option_found, argv[i]) == 0) { int spaces = 1; const char *sp; char *np; for (sp = target_option_translations[tott_idx].replacements; *sp; sp++) { if (*sp == ' ') spaces ++; } newvsize += spaces * sizeof (const char *); newv = (const char **) xrealloc (newv, newvsize); sp = target_option_translations[tott_idx].replacements; np = xstrdup (sp); while (1) { while (*np == ' ') np++; if (*np == 0) break; newv[newindex++] = np; while (*np != ' ' && *np) np++; if (*np == 0) break; *np++ = 0; } i ++; break; } } if (target_option_translations[tott_idx].option_found) continue; #endif /* Translate -- options. */ if (argv[i][0] == '-' && argv[i][1] == '-') { size_t j; /* Find a mapping that applies to this option. */ for (j = 0; j < ARRAY_SIZE (option_map); j++) { size_t optlen = strlen (option_map[j].name); size_t arglen = strlen (argv[i]); size_t complen = arglen > optlen ? optlen : arglen; const char *arginfo = option_map[j].arg_info; if (arginfo == 0) arginfo = ""; if (!strncmp (argv[i], option_map[j].name, complen)) { const char *arg = 0; if (arglen < optlen) { size_t k; for (k = j + 1; k < ARRAY_SIZE (option_map); k++) if (strlen (option_map[k].name) >= arglen && !strncmp (argv[i], option_map[k].name, arglen)) { error ("Ambiguous abbreviation %s", argv[i]); break; } if (k != ARRAY_SIZE (option_map)) break; } if (arglen > optlen) { /* If the option has an argument, accept that. */ if (argv[i][optlen] == '=') arg = argv[i] + optlen + 1; /* If this mapping requires extra text at end of name, accept that as "argument". */ else if (strchr (arginfo, '*') != 0) arg = argv[i] + optlen; /* Otherwise, extra text at end means mismatch. Try other mappings. */ else continue; } else if (strchr (arginfo, '*') != 0) { error ("Incomplete `%s' option", option_map[j].name); break; } /* Handle arguments. */ if (strchr (arginfo, 'a') != 0) { if (arg == 0) { if (i + 1 == argc) { error ("Missing argument to `%s' option", option_map[j].name); break; } arg = argv[++i]; } } else if (strchr (arginfo, '*') != 0) ; else if (strchr (arginfo, 'o') == 0) { if (arg != 0) error ("Extraneous argument to `%s' option", option_map[j].name); arg = 0; } /* Store the translation as one argv elt or as two. */ if (arg != 0 && strchr (arginfo, 'j') != 0) newv[newindex++] = concat (option_map[j].equivalent, arg, NULL); else if (arg != 0) { newv[newindex++] = option_map[j].equivalent; newv[newindex++] = arg; } else newv[newindex++] = option_map[j].equivalent; break; } } i++; } /* Handle old-fashioned options--just copy them through, with their arguments. */ else if (argv[i][0] == '-') { const char *p = argv[i] + 1; int c = *p; int nskip = 1; if (SWITCH_TAKES_ARG (c) > (p[1] != 0)) nskip += SWITCH_TAKES_ARG (c) - (p[1] != 0); else if (WORD_SWITCH_TAKES_ARG (p)) nskip += WORD_SWITCH_TAKES_ARG (p); else if ((c == 'B' || c == 'b' || c == 'V' || c == 'x') && p[1] == 0) nskip += 1; else if (! strcmp (p, "Xlinker")) nskip += 1; /* Watch out for an option at the end of the command line that is missing arguments, and avoid skipping past the end of the command line. */ if (nskip + i > argc) nskip = argc - i; while (nskip > 0) { newv[newindex++] = argv[i++]; nskip--; } } else /* Ordinary operands, or +e options. */ newv[newindex++] = argv[i++]; } newv[newindex] = 0; *argvp = newv; *argcp = newindex; } static char * skip_whitespace (p) char *p; { while (1) { /* A fully-blank line is a delimiter in the SPEC file and shouldn't be considered whitespace. */ if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n') return p + 1; else if (*p == '\n' || *p == ' ' || *p == '\t') p++; else if (*p == '#') { while (*p != '\n') p++; p++; } else break; } return p; } /* Structures to keep track of prefixes to try when looking for files. */ struct prefix_list { const char *prefix; /* String to prepend to the path. */ struct prefix_list *next; /* Next in linked list. */ int require_machine_suffix; /* Don't use without machine_suffix. */ /* 2 means try both machine_suffix and just_machine_suffix. */ int *used_flag_ptr; /* 1 if a file was found with this prefix. */ int priority; /* Sort key - priority within list */ }; struct path_prefix { struct prefix_list *plist; /* List of prefixes to try */ int max_len; /* Max length of a prefix in PLIST */ const char *name; /* Name of this list (used in config stuff) */ }; /* List of prefixes to try when looking for executables. */ static struct path_prefix exec_prefixes = { 0, 0, "exec" }; /* List of prefixes to try when looking for startup (crt0) files. */ static struct path_prefix startfile_prefixes = { 0, 0, "startfile" }; /* List of prefixes to try when looking for include files. */ static struct path_prefix include_prefixes = { 0, 0, "include" }; /* Suffix to attach to directories searched for commands. This looks like `MACHINE/VERSION/'. */ static const char *machine_suffix = 0; /* Suffix to attach to directories searched for commands. This is just `MACHINE/'. */ static const char *just_machine_suffix = 0; /* Adjusted value of GCC_EXEC_PREFIX envvar. */ static const char *gcc_exec_prefix; /* Default prefixes to attach to command names. */ #ifdef CROSS_COMPILE /* Don't use these prefixes for a cross compiler. */ #undef MD_EXEC_PREFIX #undef MD_STARTFILE_PREFIX #undef MD_STARTFILE_PREFIX_1 #endif /* If no prefixes defined, use the null string, which will disable them. */ #ifndef MD_EXEC_PREFIX #define MD_EXEC_PREFIX "" #endif #ifndef MD_STARTFILE_PREFIX #define MD_STARTFILE_PREFIX "" #endif #ifndef MD_STARTFILE_PREFIX_1 #define MD_STARTFILE_PREFIX_1 "" #endif /* Supply defaults for the standard prefixes. */ #ifndef STANDARD_EXEC_PREFIX #define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc-lib/" #endif #ifndef STANDARD_STARTFILE_PREFIX #define STANDARD_STARTFILE_PREFIX "/usr/local/lib/" #endif #ifndef TOOLDIR_BASE_PREFIX #define TOOLDIR_BASE_PREFIX "/usr/local/" #endif #ifndef STANDARD_BINDIR_PREFIX #define STANDARD_BINDIR_PREFIX "/usr/local/bin" #endif static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX; static const char *const standard_exec_prefix_1 = "/usr/lib/gcc/"; static const char *md_exec_prefix = MD_EXEC_PREFIX; static const char *md_startfile_prefix = MD_STARTFILE_PREFIX; static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1; static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX; static const char *const standard_startfile_prefix_1 = "/lib/"; static const char *const standard_startfile_prefix_2 = "/usr/lib/"; static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX; static const char *tooldir_prefix; static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX; /* Subdirectory to use for locating libraries. Set by set_multilib_dir based on the compilation options. */ static const char *multilib_dir; /* Structure to keep track of the specs that have been defined so far. These are accessed using %(specname) or %[specname] in a compiler or link spec. */ struct spec_list { /* The following 2 fields must be first */ /* to allow EXTRA_SPECS to be initialized */ const char *name; /* name of the spec. */ const char *ptr; /* available ptr if no static pointer */ /* The following fields are not initialized */ /* by EXTRA_SPECS */ const char **ptr_spec; /* pointer to the spec itself. */ struct spec_list *next; /* Next spec in linked list. */ int name_len; /* length of the name */ int alloc_p; /* whether string was allocated */ }; #define INIT_STATIC_SPEC(NAME,PTR) \ { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 } /* List of statically defined specs. */ static struct spec_list static_specs[] = { INIT_STATIC_SPEC ("asm", &asm_spec), INIT_STATIC_SPEC ("asm_final", &asm_final_spec), INIT_STATIC_SPEC ("asm_options", &asm_options), INIT_STATIC_SPEC ("invoke_as", &invoke_as), INIT_STATIC_SPEC ("cpp", &cpp_spec), INIT_STATIC_SPEC ("cpp_options", &cpp_options), INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp), INIT_STATIC_SPEC ("cc1", &cc1_spec), INIT_STATIC_SPEC ("cc1_options", &cc1_options), INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec), INIT_STATIC_SPEC ("endfile", &endfile_spec), INIT_STATIC_SPEC ("link", &link_spec), INIT_STATIC_SPEC ("lib", &lib_spec), INIT_STATIC_SPEC ("libgcc", &libgcc_spec), INIT_STATIC_SPEC ("startfile", &startfile_spec), INIT_STATIC_SPEC ("switches_need_spaces", &switches_need_spaces), INIT_STATIC_SPEC ("signed_char", &signed_char_spec), INIT_STATIC_SPEC ("predefines", &cpp_predefines), INIT_STATIC_SPEC ("cross_compile", &cross_compile), INIT_STATIC_SPEC ("version", &compiler_version), INIT_STATIC_SPEC ("multilib", &multilib_select), INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults), INIT_STATIC_SPEC ("multilib_extra", &multilib_extra), INIT_STATIC_SPEC ("multilib_matches", &multilib_matches), INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions), INIT_STATIC_SPEC ("linker", &linker_name_spec), INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec), INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix), INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix), INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1), }; #ifdef EXTRA_SPECS /* additional specs needed */ /* Structure to keep track of just the first two args of a spec_list. That is all that the EXTRA_SPECS macro gives us. */ struct spec_list_1 { const char *const name; const char *const ptr; }; static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS }; static struct spec_list *extra_specs = (struct spec_list *) 0; #endif /* List of dynamically allocates specs that have been defined so far. */ static struct spec_list *specs = (struct spec_list *) 0; /* Add appropriate libgcc specs to OBSTACK, taking into account various permutations of -shared-libgcc, -shared, and such. */ #ifdef ENABLE_SHARED_LIBGCC static void init_gcc_specs (obstack, shared_name, static_name) struct obstack *obstack; const char *shared_name; const char *static_name; { char buffer[128]; /* If we see -shared-libgcc, then use the shared version. */ sprintf (buffer, "%%{shared-libgcc:%s %s}", shared_name, static_name); obstack_grow (obstack, buffer, strlen (buffer)); /* If we see -static-libgcc, then use the static version. */ sprintf (buffer, "%%{static-libgcc:%s}", static_name); obstack_grow (obstack, buffer, strlen (buffer)); /* Otherwise, if we see -shared, then use the shared version. */ sprintf (buffer, "%%{!shared-libgcc:%%{!static-libgcc:%%{shared:%s %s}}}", shared_name, static_name); obstack_grow (obstack, buffer, strlen (buffer)); /* Otherwise, use the static version. */ sprintf (buffer, "%%{!shared-libgcc:%%{!static-libgcc:%%{!shared:%s}}}", static_name); obstack_grow (obstack, buffer, strlen (buffer)); } #endif /* ENABLE_SHARED_LIBGCC */ /* Initialize the specs lookup routines. */ static void init_spec () { struct spec_list *next = (struct spec_list *) 0; struct spec_list *sl = (struct spec_list *) 0; int i; if (specs) return; /* Already initialized. */ if (verbose_flag) notice ("Using builtin specs.\n"); #ifdef EXTRA_SPECS extra_specs = (struct spec_list *) xcalloc (sizeof (struct spec_list), ARRAY_SIZE (extra_specs_1)); for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--) { sl = &extra_specs[i]; sl->name = extra_specs_1[i].name; sl->ptr = extra_specs_1[i].ptr; sl->next = next; sl->name_len = strlen (sl->name); sl->ptr_spec = &sl->ptr; next = sl; } #endif for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) { sl = &static_specs[i]; sl->next = next; next = sl; } #ifdef ENABLE_SHARED_LIBGCC /* ??? If neither -shared-libgcc nor --static-libgcc was seen, then we should be making an educated guess. Some proposed heuristics for ELF include: (1) If "-Wl,--export-dynamic", then it's a fair bet that the program will be doing dynamic loading, which will likely need the shared libgcc. (2) If "-ldl", then it's also a fair bet that we're doing dynamic loading. (3) For each ET_DYN we're linking against (either through -lfoo or /some/path/foo.so), check to see whether it or one of its dependencies depends on a shared libgcc. (4) If "-shared" If the runtime is fixed to look for program headers instead of calling __register_frame_info at all, for each object, use the shared libgcc if any EH symbol referenced. If crtstuff is fixed to not invoke __register_frame_info automatically, for each object, use the shared libgcc if any non-empty unwind section found. Doing any of this probably requires invoking an external program to do the actual object file scanning. */ { const char *p = libgcc_spec; int in_sep = 1; /* Transform the extant libgcc_spec into one that uses the shared libgcc when given the proper command line arguments. */ while (*p) { if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0) { init_gcc_specs (&obstack, #ifdef NO_SHARED_LIBGCC_MULTILIB "-lgcc_s" #else "-lgcc_s%M" #endif , "-lgcc"); p += 5; in_sep = 0; } else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0) { /* Ug. We don't know shared library extensions. Hope that systems that use this form don't do shared libraries. */ init_gcc_specs (&obstack, #ifdef NO_SHARED_LIBGCC_MULTILIB "-lgcc_s" #else "-lgcc_s%M" #endif , "libgcc.a%s"); p += 10; in_sep = 0; } else { obstack_1grow (&obstack, *p); in_sep = (*p == ' '); p += 1; } } obstack_1grow (&obstack, '\0'); libgcc_spec = obstack_finish (&obstack); } #endif #ifdef USE_AS_TRADITIONAL_FORMAT /* Prepend "--traditional-format" to whatever asm_spec we had before. */ { static const char tf[] = "--traditional-format "; obstack_grow (&obstack, tf, sizeof(tf) - 1); obstack_grow0 (&obstack, asm_spec, strlen (asm_spec)); asm_spec = obstack_finish (&obstack); } #endif specs = sl; } /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is removed; If the spec starts with a + then SPEC is added to the end of the current spec. */ static void set_spec (name, spec) const char *name; const char *spec; { struct spec_list *sl; const char *old_spec; int name_len = strlen (name); int i; /* If this is the first call, initialize the statically allocated specs. */ if (!specs) { struct spec_list *next = (struct spec_list *) 0; for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--) { sl = &static_specs[i]; sl->next = next; next = sl; } specs = sl; } /* See if the spec already exists. */ for (sl = specs; sl; sl = sl->next) if (name_len == sl->name_len && !strcmp (sl->name, name)) break; if (!sl) { /* Not found - make it. */ sl = (struct spec_list *) xmalloc (sizeof (struct spec_list)); sl->name = xstrdup (name); sl->name_len = name_len; sl->ptr_spec = &sl->ptr; sl->alloc_p = 0; *(sl->ptr_spec) = ""; sl->next = specs; specs = sl; } old_spec = *(sl->ptr_spec); *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1])) ? concat (old_spec, spec + 1, NULL) : xstrdup (spec)); #ifdef DEBUG_SPECS if (verbose_flag) notice ("Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec)); #endif /* Free the old spec. */ if (old_spec && sl->alloc_p) free ((PTR) old_spec); sl->alloc_p = 1; } /* Accumulate a command (program name and args), and run it. */ /* Vector of pointers to arguments in the current line of specifications. */ static const char **argbuf; /* Number of elements allocated in argbuf. */ static int argbuf_length; /* Number of elements in argbuf currently in use (containing args). */ static int argbuf_index; /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for it here. */ static struct temp_name { const char *suffix; /* suffix associated with the code. */ int length; /* strlen (suffix). */ int unique; /* Indicates whether %g or %u/%U was used. */ const char *filename; /* associated filename. */ int filename_length; /* strlen (filename). */ struct temp_name *next; } *temp_names; /* Number of commands executed so far. */ static int execution_count; /* Number of commands that exited with a signal. */ static int signal_count; /* Name with which this program was invoked. */ static const char *programname; /* Clear out the vector of arguments (after a command is executed). */ static void clear_args () { argbuf_index = 0; } /* Add one argument to the vector at the end. This is done when a space is seen or at the end of the line. If DELETE_ALWAYS is nonzero, the arg is a filename and the file should be deleted eventually. If DELETE_FAILURE is nonzero, the arg is a filename and the file should be deleted if this compilation fails. */ static void store_arg (arg, delete_always, delete_failure) const char *arg; int delete_always, delete_failure; { if (argbuf_index + 1 == argbuf_length) argbuf = (const char **) xrealloc (argbuf, (argbuf_length *= 2) * sizeof (const char *)); argbuf[argbuf_index++] = arg; argbuf[argbuf_index] = 0; if (delete_always || delete_failure) record_temp_file (arg, delete_always, delete_failure); } /* Load specs from a file name named FILENAME, replacing occurrences of various different types of line-endings, \r\n, \n\r and just \r, with a single \n. */ static char * load_specs (filename) const char *filename; { int desc; int readlen; struct stat statbuf; char *buffer; char *buffer_p; char *specs; char *specs_p; if (verbose_flag) notice ("Reading specs from %s\n", filename); /* Open and stat the file. */ desc = open (filename, O_RDONLY, 0); if (desc < 0) pfatal_with_name (filename); if (stat (filename, &statbuf) < 0) pfatal_with_name (filename); /* Read contents of file into BUFFER. */ buffer = xmalloc ((unsigned) statbuf.st_size + 1); readlen = read (desc, buffer, (unsigned) statbuf.st_size); if (readlen < 0) pfatal_with_name (filename); buffer[readlen] = 0; close (desc); specs = xmalloc (readlen + 1); specs_p = specs; for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++) { int skip = 0; char c = *buffer_p; if (c == '\r') { if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */ skip = 1; else if (*(buffer_p + 1) == '\n') /* \r\n */ skip = 1; else /* \r */ c = '\n'; } if (! skip) *specs_p++ = c; } *specs_p = '\0'; free (buffer); return (specs); } /* Read compilation specs from a file named FILENAME, replacing the default ones. A suffix which starts with `*' is a definition for one of the machine-specific sub-specs. The "suffix" should be *asm, *cc1, *cpp, *link, *startfile, *signed_char, etc. The corresponding spec is stored in asm_spec, etc., rather than in the `compilers' vector. Anything invalid in the file is a fatal error. */ static void read_specs (filename, main_p) const char *filename; int main_p; { char *buffer; char *p; buffer = load_specs (filename); /* Scan BUFFER for specs, putting them in the vector. */ p = buffer; while (1) { char *suffix; char *spec; char *in, *out, *p1, *p2, *p3; /* Advance P in BUFFER to the next nonblank nocomment line. */ p = skip_whitespace (p); if (*p == 0) break; /* Is this a special command that starts with '%'? */ /* Don't allow this for the main specs file, since it would encourage people to overwrite it. */ if (*p == '%' && !main_p) { p1 = p; while (*p && *p != '\n') p++; /* Skip '\n'. */ p++; if (!strncmp (p1, "%include", sizeof ("%include") - 1) && (p1[sizeof "%include" - 1] == ' ' || p1[sizeof "%include" - 1] == '\t')) { char *new_filename; p1 += sizeof ("%include"); while (*p1 == ' ' || *p1 == '\t') p1++; if (*p1++ != '<' || p[-2] != '>') fatal ("specs %%include syntax malformed after %ld characters", (long) (p1 - buffer + 1)); p[-2] = '\0'; new_filename = find_a_file (&startfile_prefixes, p1, R_OK); read_specs (new_filename ? new_filename : p1, FALSE); continue; } else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1) && (p1[sizeof "%include_noerr" - 1] == ' ' || p1[sizeof "%include_noerr" - 1] == '\t')) { char *new_filename; p1 += sizeof "%include_noerr"; while (*p1 == ' ' || *p1 == '\t') p1++; if (*p1++ != '<' || p[-2] != '>') fatal ("specs %%include syntax malformed after %ld characters", (long) (p1 - buffer + 1)); p[-2] = '\0'; new_filename = find_a_file (&startfile_prefixes, p1, R_OK); if (new_filename) read_specs (new_filename, FALSE); else if (verbose_flag) notice ("Could not find specs file %s\n", p1); continue; } else if (!strncmp (p1, "%rename", sizeof "%rename" - 1) && (p1[sizeof "%rename" - 1] == ' ' || p1[sizeof "%rename" - 1] == '\t')) { int name_len; struct spec_list *sl; /* Get original name */ p1 += sizeof "%rename"; while (*p1 == ' ' || *p1 == '\t') p1++; if (! ISALPHA ((unsigned char) *p1)) fatal ("specs %%rename syntax malformed after %ld characters", (long) (p1 - buffer)); p2 = p1; while (*p2 && !ISSPACE ((unsigned char) *p2)) p2++; if (*p2 != ' ' && *p2 != '\t') fatal ("specs %%rename syntax malformed after %ld characters", (long) (p2 - buffer)); name_len = p2 - p1; *p2++ = '\0'; while (*p2 == ' ' || *p2 == '\t') p2++; if (! ISALPHA ((unsigned char) *p2)) fatal ("specs %%rename syntax malformed after %ld characters", (long) (p2 - buffer)); /* Get new spec name. */ p3 = p2; while (*p3 && !ISSPACE ((unsigned char) *p3)) p3++; if (p3 != p - 1) fatal ("specs %%rename syntax malformed after %ld characters", (long) (p3 - buffer)); *p3 = '\0'; for (sl = specs; sl; sl = sl->next) if (name_len == sl->name_len && !strcmp (sl->name, p1)) break; if (!sl) fatal ("specs %s spec was not found to be renamed", p1); if (strcmp (p1, p2) == 0) continue; if (verbose_flag) { notice ("rename spec %s to %s\n", p1, p2); #ifdef DEBUG_SPECS notice ("spec is '%s'\n\n", *(sl->ptr_spec)); #endif } set_spec (p2, *(sl->ptr_spec)); if (sl->alloc_p) free ((PTR) *(sl->ptr_spec)); *(sl->ptr_spec) = ""; sl->alloc_p = 0; continue; } else fatal ("specs unknown %% command after %ld characters", (long) (p1 - buffer)); } /* Find the colon that should end the suffix. */ p1 = p; while (*p1 && *p1 != ':' && *p1 != '\n') p1++; /* The colon shouldn't be missing. */ if (*p1 != ':') fatal ("specs file malformed after %ld characters", (long) (p1 - buffer)); /* Skip back over trailing whitespace. */ p2 = p1; while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t')) p2--; /* Copy the suffix to a string. */ suffix = save_string (p, p2 - p); /* Find the next line. */ p = skip_whitespace (p1 + 1); if (p[1] == 0) fatal ("specs file malformed after %ld characters", (long) (p - buffer)); p1 = p; /* Find next blank line or end of string. */ while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0'))) p1++; /* Specs end at the blank line and do not include the newline. */ spec = save_string (p, p1 - p); p = p1; /* Delete backslash-newline sequences from the spec. */ in = spec; out = spec; while (*in != 0) { if (in[0] == '\\' && in[1] == '\n') in += 2; else if (in[0] == '#') while (*in && *in != '\n') in++; else *out++ = *in++; } *out = 0; if (suffix[0] == '*') { if (! strcmp (suffix, "*link_command")) link_command_spec = spec; else set_spec (suffix + 1, spec); } else { /* Add this pair to the vector. */ compilers = ((struct compiler *) xrealloc (compilers, (n_compilers + 2) * sizeof (struct compiler))); compilers[n_compilers].suffix = suffix; compilers[n_compilers].spec = spec; n_compilers++; memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]); } if (*suffix == 0) link_command_spec = spec; } if (link_command_spec == 0) fatal ("spec file has no spec for linking"); } /* Record the names of temporary files we tell compilers to write, and delete them at the end of the run. */ /* This is the common prefix we use to make temp file names. It is chosen once for each run of this program. It is substituted into a spec by %g or %j. Thus, all temp file names contain this prefix. In practice, all temp file names start with this prefix. This prefix comes from the envvar TMPDIR if it is defined; otherwise, from the P_tmpdir macro if that is defined; otherwise, in /usr/tmp or /tmp; or finally the current directory if all else fails. */ static const char *temp_filename; /* Length of the prefix. */ static int temp_filename_length; /* Define the list of temporary files to delete. */ struct temp_file { const char *name; struct temp_file *next; }; /* Queue of files to delete on success or failure of compilation. */ static struct temp_file *always_delete_queue; /* Queue of files to delete on failure of compilation. */ static struct temp_file *failure_delete_queue; /* Record FILENAME as a file to be deleted automatically. ALWAYS_DELETE nonzero means delete it if all compilation succeeds; otherwise delete it in any case. FAIL_DELETE nonzero means delete it if a compilation step fails; otherwise delete it in any case. */ void record_temp_file (filename, always_delete, fail_delete) const char *filename; int always_delete; int fail_delete; { char *const name = xstrdup (filename); if (always_delete) { struct temp_file *temp; for (temp = always_delete_queue; temp; temp = temp->next) if (! strcmp (name, temp->name)) goto already1; temp = (struct temp_file *) xmalloc (sizeof (struct temp_file)); temp->next = always_delete_queue; temp->name = name; always_delete_queue = temp; already1:; } if (fail_delete) { struct temp_file *temp; for (temp = failure_delete_queue; temp; temp = temp->next) if (! strcmp (name, temp->name)) goto already2; temp = (struct temp_file *) xmalloc (sizeof (struct temp_file)); temp->next = failure_delete_queue; temp->name = name; failure_delete_queue = temp; already2:; } } /* Delete all the temporary files whose names we previously recorded. */ static void delete_if_ordinary (name) const char *name; { struct stat st; #ifdef DEBUG int i, c; printf ("Delete %s? (y or n) ", name); fflush (stdout); i = getchar (); if (i != '\n') while ((c = getchar ()) != '\n' && c != EOF) ; if (i == 'y' || i == 'Y') #endif /* DEBUG */ if (stat (name, &st) >= 0 && S_ISREG (st.st_mode)) if (unlink (name) < 0) if (verbose_flag) perror_with_name (name); } static void delete_temp_files () { struct temp_file *temp; for (temp = always_delete_queue; temp; temp = temp->next) delete_if_ordinary (temp->name); always_delete_queue = 0; } /* Delete all the files to be deleted on error. */ static void delete_failure_queue () { struct temp_file *temp; for (temp = failure_delete_queue; temp; temp = temp->next) delete_if_ordinary (temp->name); } static void clear_failure_queue () { failure_delete_queue = 0; } /* Build a list of search directories from PATHS. PREFIX is a string to prepend to the list. If CHECK_DIR_P is non-zero we ensure the directory exists. This is used mostly by putenv_from_prefixes so we use `collect_obstack'. It is also used by the --print-search-dirs flag. */ static char * build_search_list (paths, prefix, check_dir_p) struct path_prefix *paths; const char *prefix; int check_dir_p; { int suffix_len = (machine_suffix) ? strlen (machine_suffix) : 0; int just_suffix_len = (just_machine_suffix) ? strlen (just_machine_suffix) : 0; int first_time = TRUE; struct prefix_list *pprefix; obstack_grow (&collect_obstack, prefix, strlen (prefix)); obstack_1grow (&collect_obstack, '='); for (pprefix = paths->plist; pprefix != 0; pprefix = pprefix->next) { int len = strlen (pprefix->prefix); if (machine_suffix && (! check_dir_p || is_directory (pprefix->prefix, machine_suffix, 0))) { if (!first_time) obstack_1grow (&collect_obstack, PATH_SEPARATOR); first_time = FALSE; obstack_grow (&collect_obstack, pprefix->prefix, len); obstack_grow (&collect_obstack, machine_suffix, suffix_len); } if (just_machine_suffix && pprefix->require_machine_suffix == 2 && (! check_dir_p || is_directory (pprefix->prefix, just_machine_suffix, 0))) { if (! first_time) obstack_1grow (&collect_obstack, PATH_SEPARATOR); first_time = FALSE; obstack_grow (&collect_obstack, pprefix->prefix, len); obstack_grow (&collect_obstack, just_machine_suffix, just_suffix_len); } if (! pprefix->require_machine_suffix) { if (! first_time) obstack_1grow (&collect_obstack, PATH_SEPARATOR); first_time = FALSE; obstack_grow (&collect_obstack, pprefix->prefix, len); } } obstack_1grow (&collect_obstack, '\0'); return obstack_finish (&collect_obstack); } /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables for collect. */ static void putenv_from_prefixes (paths, env_var) struct path_prefix *paths; const char *env_var; { putenv (build_search_list (paths, env_var, 1)); } #ifndef VMS /* FIXME: the location independence code for VMS is hairier than this, and hasn't been written. */ /* Split a filename into component directories. */ static char ** split_directories (name, ptr_num_dirs) const char *name; int *ptr_num_dirs; { int num_dirs = 0; char **dirs; const char *p, *q; int ch; /* Count the number of directories. Special case MSDOS disk names as part of the initial directory. */ p = name; #ifdef HAVE_DOS_BASED_FILE_SYSTEM if (name[1] == ':' && IS_DIR_SEPARATOR (name[2])) { p += 3; num_dirs++; } #endif /* HAVE_DOS_BASED_FILE_SYSTEM */ while ((ch = *p++) != '\0') { if (IS_DIR_SEPARATOR (ch)) { num_dirs++; while (IS_DIR_SEPARATOR (*p)) p++; } } dirs = (char **) xmalloc (sizeof (char *) * (num_dirs + 2)); /* Now copy the directory parts. */ num_dirs = 0; p = name; #ifdef HAVE_DOS_BASED_FILE_SYSTEM if (name[1] == ':' && IS_DIR_SEPARATOR (name[2])) { dirs[num_dirs++] = save_string (p, 3); p += 3; } #endif /* HAVE_DOS_BASED_FILE_SYSTEM */ q = p; while ((ch = *p++) != '\0') { if (IS_DIR_SEPARATOR (ch)) { while (IS_DIR_SEPARATOR (*p)) p++; dirs[num_dirs++] = save_string (q, p - q); q = p; } } if (p - 1 - q > 0) dirs[num_dirs++] = save_string (q, p - 1 - q); dirs[num_dirs] = NULL; if (ptr_num_dirs) *ptr_num_dirs = num_dirs; return dirs; } /* Release storage held by split directories. */ static void free_split_directories (dirs) char **dirs; { int i = 0; while (dirs[i] != NULL) free (dirs[i++]); free ((char *) dirs); } /* Given three strings PROGNAME, BIN_PREFIX, PREFIX, return a string that gets to PREFIX starting with the directory portion of PROGNAME and a relative pathname of the difference between BIN_PREFIX and PREFIX. For example, if BIN_PREFIX is /alpha/beta/gamma/gcc/delta, PREFIX is /alpha/beta/gamma/omega/, and PROGNAME is /red/green/blue/gcc, then this function will return /red/green/blue/../omega. If no relative prefix can be found, return NULL. */ static char * make_relative_prefix (progname, bin_prefix, prefix) const char *progname; const char *bin_prefix; const char *prefix; { char **prog_dirs, **bin_dirs, **prefix_dirs; int prog_num, bin_num, prefix_num, std_loc_p; int i, n, common; prog_dirs = split_directories (progname, &prog_num); bin_dirs = split_directories (bin_prefix, &bin_num); /* If there is no full pathname, try to find the program by checking in each of the directories specified in the PATH environment variable. */ if (prog_num == 1) { char *temp; GET_ENV_PATH_LIST (temp, "PATH"); if (temp) { char *startp, *endp, *nstore; size_t prefixlen = strlen (temp) + 1; if (prefixlen < 2) prefixlen = 2; nstore = (char *) alloca (prefixlen + strlen (progname) + 1); startp = endp = temp; while (1) { if (*endp == PATH_SEPARATOR || *endp == 0) { if (endp == startp) { nstore[0] = '.'; nstore[1] = DIR_SEPARATOR; nstore[2] = '\0'; } else { strncpy (nstore, startp, endp - startp); if (! IS_DIR_SEPARATOR (endp[-1])) { nstore[endp - startp] = DIR_SEPARATOR; nstore[endp - startp + 1] = 0; } else nstore[endp - startp] = 0; } strcat (nstore, progname); if (! access (nstore, X_OK) #ifdef HAVE_HOST_EXECUTABLE_SUFFIX || ! access (strcat (nstore, HOST_EXECUTABLE_SUFFIX), X_OK) #endif ) { free_split_directories (prog_dirs); progname = nstore; prog_dirs = split_directories (progname, &prog_num); break; } if (*endp == 0) break; endp = startp = endp + 1; } else endp++; } } } /* Remove the program name from comparison of directory names. */ prog_num--; /* Determine if the compiler is installed in the standard location, and if so, we don't need to specify relative directories. Also, if argv[0] doesn't contain any directory specifiers, there is not much we can do. */ std_loc_p = 0; if (prog_num == bin_num) { for (i = 0; i < bin_num; i++) { if (strcmp (prog_dirs[i], bin_dirs[i]) != 0) break; } if (prog_num <= 0 || i == bin_num) { std_loc_p = 1; free_split_directories (prog_dirs); free_split_directories (bin_dirs); prog_dirs = bin_dirs = (char **) 0; return NULL; } } prefix_dirs = split_directories (prefix, &prefix_num); /* Find how many directories are in common between bin_prefix & prefix. */ n = (prefix_num < bin_num) ? prefix_num : bin_num; for (common = 0; common < n; common++) { if (strcmp (bin_dirs[common], prefix_dirs[common]) != 0) break; } /* If there are no common directories, there can be no relative prefix. */ if (common == 0) { free_split_directories (prog_dirs); free_split_directories (bin_dirs); free_split_directories (prefix_dirs); return NULL; } /* Build up the pathnames in argv[0]. */ for (i = 0; i < prog_num; i++) obstack_grow (&obstack, prog_dirs[i], strlen (prog_dirs[i])); /* Now build up the ..'s. */ for (i = common; i < n; i++) { obstack_grow (&obstack, DIR_UP, sizeof (DIR_UP) - 1); obstack_1grow (&obstack, DIR_SEPARATOR); } /* Put in directories to move over to prefix. */ for (i = common; i < prefix_num; i++) obstack_grow (&obstack, prefix_dirs[i], strlen (prefix_dirs[i])); free_split_directories (prog_dirs); free_split_directories (bin_dirs); free_split_directories (prefix_dirs); obstack_1grow (&obstack, '\0'); return obstack_finish (&obstack); } #endif /* VMS */ /* Check whether NAME can be accessed in MODE. This is like access, except that it never considers directories to be executable. */ static int access_check (name, mode) const char *name; int mode; { if (mode == X_OK) { struct stat st; if (stat (name, &st) < 0 || S_ISDIR (st.st_mode)) return -1; } return access (name, mode); } /* Search for NAME using the prefix list PREFIXES. MODE is passed to access to check permissions. Return 0 if not found, otherwise return its name, allocated with malloc. */ static char * find_a_file (pprefix, name, mode) struct path_prefix *pprefix; const char *name; int mode; { char *temp; const char *const file_suffix = ((mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : ""); struct prefix_list *pl; int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1; #ifdef DEFAULT_ASSEMBLER if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0) return xstrdup (DEFAULT_ASSEMBLER); #endif #ifdef DEFAULT_LINKER if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0) return xstrdup (DEFAULT_LINKER); #endif if (machine_suffix) len += strlen (machine_suffix); temp = xmalloc (len); /* Determine the filename to execute (special case for absolute paths). */ if (IS_ABSOLUTE_PATHNAME (name)) { if (access (name, mode) == 0) { strcpy (temp, name); return temp; } } else for (pl = pprefix->plist; pl; pl = pl->next) { if (machine_suffix) { /* Some systems have a suffix for executable files. So try appending that first. */ if (file_suffix[0] != 0) { strcpy (temp, pl->prefix); strcat (temp, machine_suffix); strcat (temp, name); strcat (temp, file_suffix); if (access_check (temp, mode) == 0) { if (pl->used_flag_ptr != 0) *pl->used_flag_ptr = 1; return temp; } } /* Now try just the name. */ strcpy (temp, pl->prefix); strcat (temp, machine_suffix); strcat (temp, name); if (access_check (temp, mode) == 0) { if (pl->used_flag_ptr != 0) *pl->used_flag_ptr = 1; return temp; } } /* Certain prefixes are tried with just the machine type, not the version. This is used for finding as, ld, etc. */ if (just_machine_suffix && pl->require_machine_suffix == 2) { /* Some systems have a suffix for executable files. So try appending that first. */ if (file_suffix[0] != 0) { strcpy (temp, pl->prefix); strcat (temp, just_machine_suffix); strcat (temp, name); strcat (temp, file_suffix); if (access_check (temp, mode) == 0) { if (pl->used_flag_ptr != 0) *pl->used_flag_ptr = 1; return temp; } } strcpy (temp, pl->prefix); strcat (temp, just_machine_suffix); strcat (temp, name); if (access_check (temp, mode) == 0) { if (pl->used_flag_ptr != 0) *pl->used_flag_ptr = 1; return temp; } } /* Certain prefixes can't be used without the machine suffix when the machine or version is explicitly specified. */ if (! pl->require_machine_suffix) { /* Some systems have a suffix for executable files. So try appending that first. */ if (file_suffix[0] != 0) { strcpy (temp, pl->prefix); strcat (temp, name); strcat (temp, file_suffix); if (access_check (temp, mode) == 0) { if (pl->used_flag_ptr != 0) *pl->used_flag_ptr = 1; return temp; } } strcpy (temp, pl->prefix); strcat (temp, name); if (access_check (temp, mode) == 0) { if (pl->used_flag_ptr != 0) *pl->used_flag_ptr = 1; return temp; } } } free (temp); return 0; } /* Ranking of prefixes in the sort list. -B prefixes are put before all others. */ enum path_prefix_priority { PREFIX_PRIORITY_B_OPT, PREFIX_PRIORITY_LAST }; /* Add an entry for PREFIX in PLIST. The PLIST is kept in assending order according to PRIORITY. Within each PRIORITY, new entries are appended. If WARN is nonzero, we will warn if no file is found through this prefix. WARN should point to an int which will be set to 1 if this entry is used. COMPONENT is the value to be passed to update_path. REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without the complete value of machine_suffix. 2 means try both machine_suffix and just_machine_suffix. */ static void add_prefix (pprefix, prefix, component, priority, require_machine_suffix, warn) struct path_prefix *pprefix; const char *prefix; const char *component; /* enum prefix_priority */ int priority; int require_machine_suffix; int *warn; { struct prefix_list *pl, **prev; int len; for (prev = &pprefix->plist; (*prev) != NULL && (*prev)->priority <= priority; prev = &(*prev)->next) ; /* Keep track of the longest prefix */ prefix = update_path (prefix, component); len = strlen (prefix); if (len > pprefix->max_len) pprefix->max_len = len; pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list)); pl->prefix = prefix; pl->require_machine_suffix = require_machine_suffix; pl->used_flag_ptr = warn; pl->priority = priority; if (warn) *warn = 0; /* Insert after PREV */ pl->next = (*prev); (*prev) = pl; } /* Execute the command specified by the arguments on the current line of spec. When using pipes, this includes several piped-together commands with `|' between them. Return 0 if successful, -1 if failed. */ static int execute () { int i; int n_commands; /* # of command. */ char *string; struct command { const char *prog; /* program name. */ const char **argv; /* vector of args. */ int pid; /* pid of process for this command. */ }; struct command *commands; /* each command buffer with above info. */ /* Count # of piped commands. */ for (n_commands = 1, i = 0; i < argbuf_index; i++) if (strcmp (argbuf[i], "|") == 0) n_commands++; /* Get storage for each command. */ commands = (struct command *) alloca (n_commands * sizeof (struct command)); /* Split argbuf into its separate piped processes, and record info about each one. Also search for the programs that are to be run. */ commands[0].prog = argbuf[0]; /* first command. */ commands[0].argv = &argbuf[0]; string = find_a_file (&exec_prefixes, commands[0].prog, X_OK); if (string) commands[0].argv[0] = string; for (n_commands = 1, i = 0; i < argbuf_index; i++) if (strcmp (argbuf[i], "|") == 0) { /* each command. */ #if defined (__MSDOS__) || defined (OS2) || defined (VMS) fatal ("-pipe not supported"); #endif argbuf[i] = 0; /* termination of command args. */ commands[n_commands].prog = argbuf[i + 1]; commands[n_commands].argv = &argbuf[i + 1]; string = find_a_file (&exec_prefixes, commands[n_commands].prog, X_OK); if (string) commands[n_commands].argv[0] = string; n_commands++; } argbuf[argbuf_index] = 0; /* If -v, print what we are about to do, and maybe query. */ if (verbose_flag) { /* For help listings, put a blank line between sub-processes. */ if (print_help_list) fputc ('\n', stderr); /* Print each piped command as a separate line. */ for (i = 0; i < n_commands; i++) { const char *const *j; for (j = commands[i].argv; *j; j++) fprintf (stderr, " %s", *j); /* Print a pipe symbol after all but the last command. */ if (i + 1 != n_commands) fprintf (stderr, " |"); fprintf (stderr, "\n"); } fflush (stderr); #ifdef DEBUG notice ("\nGo ahead? (y or n) "); fflush (stderr); i = getchar (); if (i != '\n') while (getchar () != '\n') ; if (i != 'y' && i != 'Y') return 0; #endif /* DEBUG */ } /* Run each piped subprocess. */ for (i = 0; i < n_commands; i++) { char *errmsg_fmt, *errmsg_arg; const char *string = commands[i].argv[0]; /* For some bizarre reason, the second argument of execvp() is char *const *, not const char *const *. */ commands[i].pid = pexecute (string, (char *const *) commands[i].argv, programname, temp_filename, &errmsg_fmt, &errmsg_arg, ((i == 0 ? PEXECUTE_FIRST : 0) | (i + 1 == n_commands ? PEXECUTE_LAST : 0) | (string == commands[i].prog ? PEXECUTE_SEARCH : 0) | (verbose_flag ? PEXECUTE_VERBOSE : 0))); if (commands[i].pid == -1) pfatal_pexecute (errmsg_fmt, errmsg_arg); if (string != commands[i].prog) free ((PTR) string); } execution_count++; /* Wait for all the subprocesses to finish. We don't care what order they finish in; we know that N_COMMANDS waits will get them all. Ignore subprocesses that we don't know about, since they can be spawned by the process that exec'ed us. */ { int ret_code = 0; #ifdef HAVE_GETRUSAGE struct timeval d; double ut = 0.0, st = 0.0; #endif for (i = 0; i < n_commands;) { int j; int status; int pid; pid = pwait (commands[i].pid, &status, 0); if (pid < 0) abort (); #ifdef HAVE_GETRUSAGE if (report_times) { /* getrusage returns the total resource usage of all children up to now. Copy the previous values into prus, get the current statistics, then take the difference. */ prus = rus; getrusage (RUSAGE_CHILDREN, &rus); d.tv_sec = rus.ru_utime.tv_sec - prus.ru_utime.tv_sec; d.tv_usec = rus.ru_utime.tv_usec - prus.ru_utime.tv_usec; ut = (double) d.tv_sec + (double) d.tv_usec / 1.0e6; d.tv_sec = rus.ru_stime.tv_sec - prus.ru_stime.tv_sec; d.tv_usec = rus.ru_stime.tv_usec - prus.ru_stime.tv_usec; st = (double) d.tv_sec + (double) d.tv_usec / 1.0e6; } #endif for (j = 0; j < n_commands; j++) if (commands[j].pid == pid) { i++; if (WIFSIGNALED (status)) { #ifdef SIGPIPE /* SIGPIPE is a special case. It happens in -pipe mode when the compiler dies before the preprocessor is done, or the assembler dies before the compiler is done. There's generally been an error already, and this is just fallout. So don't generate another error unless we would otherwise have succeeded. */ if (WTERMSIG (status) == SIGPIPE && (signal_count || greatest_status >= MIN_FATAL_STATUS)) ; else #endif fatal ("\ Internal error: %s (program %s)\n\ Please submit a full bug report.\n\ See %s for instructions.", strsignal (WTERMSIG (status)), commands[j].prog, GCCBUGURL); signal_count++; ret_code = -1; } else if (WIFEXITED (status) && WEXITSTATUS (status) >= MIN_FATAL_STATUS) { if (WEXITSTATUS (status) > greatest_status) greatest_status = WEXITSTATUS (status); ret_code = -1; } #ifdef HAVE_GETRUSAGE if (report_times && ut + st != 0) notice ("# %s %.2f %.2f\n", commands[j].prog, ut, st); #endif break; } } return ret_code; } } /* Find all the switches given to us and make a vector describing them. The elements of the vector are strings, one per switch given. If a switch uses following arguments, then the `part1' field is the switch itself and the `args' field is a null-terminated vector containing the following arguments. The `live_cond' field is: 0 when initialized 1 if the switch is true in a conditional spec, -1 if false (overridden by a later switch) -2 if this switch should be ignored (used in %{ 2 && name[len - 2] == '.' && name[len - 1] == 'o') { obstack_grow (&obstack, name, len - 2); obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); name = obstack_finish (&obstack); } #endif #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) /* If there is no filetype, make it the executable suffix (which includes the "."). But don't get confused if we have just "-o". */ if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-')) return name; for (i = len - 1; i >= 0; i--) if (IS_DIR_SEPARATOR (name[i])) break; for (i++; i < len; i++) if (name[i] == '.') return name; obstack_grow (&obstack, name, len); obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX, strlen (TARGET_EXECUTABLE_SUFFIX)); name = obstack_finish (&obstack); #endif return name; } #endif /* Display the command line switches accepted by gcc. */ static void display_help () { printf (_("Usage: %s [options] file...\n"), programname); fputs (_("Options:\n"), stdout); fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout); fputs (_(" --help Display this information\n"), stdout); fputs (_(" --target-help Display target specific command line options\n"), stdout); if (! verbose_flag) fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout); fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout); fputs (_(" -dumpversion Display the version of the compiler\n"), stdout); fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout); fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout); fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout); fputs (_(" -print-file-name= Display the full path to library \n"), stdout); fputs (_(" -print-prog-name= Display the full path to compiler component \n"), stdout); fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout); fputs (_("\ -print-multi-lib Display the mapping between command line options and\n\ multiple library search directories\n"), stdout); fputs (_(" -Wa, Pass comma-separated on to the assembler\n"), stdout); fputs (_(" -Wp, Pass comma-separated on to the preprocessor\n"), stdout); fputs (_(" -Wl, Pass comma-separated on to the linker\n"), stdout); fputs (_(" -Xlinker Pass on to the linker\n"), stdout); fputs (_(" -save-temps Do not delete intermediate files\n"), stdout); fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout); fputs (_(" -time Time the execution of each subprocess\n"), stdout); fputs (_(" -specs= Override builtin specs with the contents of \n"), stdout); fputs (_(" -std= Assume that the input sources are for \n"), stdout); fputs (_(" -B Add to the compiler's search paths\n"), stdout); fputs (_(" -b Run gcc for target , if installed\n"), stdout); fputs (_(" -V Run gcc version number , if installed\n"), stdout); fputs (_(" -v Display the programs invoked by the compiler\n"), stdout); fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout); fputs (_(" -S Compile only; do not assemble or link\n"), stdout); fputs (_(" -c Compile and assemble, but do not link\n"), stdout); fputs (_(" -o Place the output into \n"), stdout); fputs (_("\ -x Specify the language of the following input files\n\ Permissable languages include: c c++ assembler none\n\ 'none' means revert to the default behaviour of\n\ guessing the language based on the file's extension\n\ "), stdout); printf (_("\ \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\ passed on to the various sub-processes invoked by %s. In order to pass\n\ other options on to these processes the -W options must be used.\n\ "), programname); /* The rest of the options are displayed by invocations of the various sub-processes. */ } static void add_preprocessor_option (option, len) const char *option; int len; { n_preprocessor_options++; if (! preprocessor_options) preprocessor_options = (char **) xmalloc (n_preprocessor_options * sizeof (char *)); else preprocessor_options = (char **) xrealloc (preprocessor_options, n_preprocessor_options * sizeof (char *)); preprocessor_options [n_preprocessor_options - 1] = save_string (option, len); } static void add_assembler_option (option, len) const char *option; int len; { n_assembler_options++; if (! assembler_options) assembler_options = (char **) xmalloc (n_assembler_options * sizeof (char *)); else assembler_options = (char **) xrealloc (assembler_options, n_assembler_options * sizeof (char *)); assembler_options [n_assembler_options - 1] = save_string (option, len); } static void add_linker_option (option, len) const char *option; int len; { n_linker_options++; if (! linker_options) linker_options = (char **) xmalloc (n_linker_options * sizeof (char *)); else linker_options = (char **) xrealloc (linker_options, n_linker_options * sizeof (char *)); linker_options [n_linker_options - 1] = save_string (option, len); } /* Create the vector `switches' and its contents. Store its length in `n_switches'. */ static void process_command (argc, argv) int argc; const char *const *argv; { int i; const char *temp; char *temp1; const char *spec_lang = 0; int last_language_n_infiles; int have_c = 0; int have_o = 0; int lang_n_infiles = 0; #ifdef MODIFY_TARGET_NAME int is_modify_target_name; int j; #endif GET_ENV_PATH_LIST (gcc_exec_prefix, "GCC_EXEC_PREFIX"); n_switches = 0; n_infiles = 0; added_libraries = 0; /* Figure compiler version from version string. */ compiler_version = temp1 = xstrdup (version_string); for (; *temp1; ++temp1) { if (*temp1 == ' ') { *temp1 = '\0'; break; } } /* Set up the default search paths. If there is no GCC_EXEC_PREFIX, see if we can create it from the pathname specified in argv[0]. */ #ifndef VMS /* FIXME: make_relative_prefix doesn't yet work for VMS. */ if (!gcc_exec_prefix) { gcc_exec_prefix = make_relative_prefix (argv[0], standard_bindir_prefix, standard_exec_prefix); if (gcc_exec_prefix) putenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL)); } #endif if (gcc_exec_prefix) { int len = strlen (gcc_exec_prefix); if (len > (int) sizeof ("/lib/gcc-lib/") - 1 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1]))) { temp = gcc_exec_prefix + len - sizeof ("/lib/gcc-lib/") + 1; if (IS_DIR_SEPARATOR (*temp) && strncmp (temp + 1, "lib", 3) == 0 && IS_DIR_SEPARATOR (temp[4]) && strncmp (temp + 5, "gcc-lib", 7) == 0) len -= sizeof ("/lib/gcc-lib/") - 1; } set_std_prefix (gcc_exec_prefix, len); add_prefix (&exec_prefixes, gcc_exec_prefix, "GCC", PREFIX_PRIORITY_LAST, 0, NULL); add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC", PREFIX_PRIORITY_LAST, 0, NULL); } /* COMPILER_PATH and LIBRARY_PATH have values that are lists of directory names with colons. */ GET_ENV_PATH_LIST (temp, "COMPILER_PATH"); if (temp) { const char *startp, *endp; char *nstore = (char *) alloca (strlen (temp) + 3); startp = endp = temp; while (1) { if (*endp == PATH_SEPARATOR || *endp == 0) { strncpy (nstore, startp, endp - startp); if (endp == startp) strcpy (nstore, concat (".", dir_separator_str, NULL)); else if (!IS_DIR_SEPARATOR (endp[-1])) { nstore[endp - startp] = DIR_SEPARATOR; nstore[endp - startp + 1] = 0; } else nstore[endp - startp] = 0; add_prefix (&exec_prefixes, nstore, 0, PREFIX_PRIORITY_LAST, 0, NULL); add_prefix (&include_prefixes, concat (nstore, "include", NULL), 0, PREFIX_PRIORITY_LAST, 0, NULL); if (*endp == 0) break; endp = startp = endp + 1; } else endp++; } } GET_ENV_PATH_LIST (temp, LIBRARY_PATH_ENV); if (temp && *cross_compile == '0') { const char *startp, *endp; char *nstore = (char *) alloca (strlen (temp) + 3); startp = endp = temp; while (1) { if (*endp == PATH_SEPARATOR || *endp == 0) { strncpy (nstore, startp, endp - startp); if (endp == startp) strcpy (nstore, concat (".", dir_separator_str, NULL)); else if (!IS_DIR_SEPARATOR (endp[-1])) { nstore[endp - startp] = DIR_SEPARATOR; nstore[endp - startp + 1] = 0; } else nstore[endp - startp] = 0; add_prefix (&startfile_prefixes, nstore, NULL, PREFIX_PRIORITY_LAST, 0, NULL); if (*endp == 0) break; endp = startp = endp + 1; } else endp++; } } /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ GET_ENV_PATH_LIST (temp, "LPATH"); if (temp && *cross_compile == '0') { const char *startp, *endp; char *nstore = (char *) alloca (strlen (temp) + 3); startp = endp = temp; while (1) { if (*endp == PATH_SEPARATOR || *endp == 0) { strncpy (nstore, startp, endp - startp); if (endp == startp) strcpy (nstore, concat (".", dir_separator_str, NULL)); else if (!IS_DIR_SEPARATOR (endp[-1])) { nstore[endp - startp] = DIR_SEPARATOR; nstore[endp - startp + 1] = 0; } else nstore[endp - startp] = 0; add_prefix (&startfile_prefixes, nstore, NULL, PREFIX_PRIORITY_LAST, 0, NULL); if (*endp == 0) break; endp = startp = endp + 1; } else endp++; } } /* Convert new-style -- options to old-style. */ translate_options (&argc, &argv); /* Do language-specific adjustment/addition of flags. */ lang_specific_driver (&argc, &argv, &added_libraries); /* Scan argv twice. Here, the first time, just count how many switches there will be in their vector, and how many input files in theirs. Also parse any switches that determine the configuration name, such as -b. Here we also parse the switches that cc itself uses (e.g. -v). */ for (i = 1; i < argc; i++) { if (! strcmp (argv[i], "-dumpspecs")) { struct spec_list *sl; init_spec (); for (sl = specs; sl; sl = sl->next) printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec)); if (link_command_spec) printf ("*link_command:\n%s\n\n", link_command_spec); exit (0); } else if (! strcmp (argv[i], "-dumpversion")) { printf ("%s\n", spec_version); exit (0); } else if (! strcmp (argv[i], "-dumpmachine")) { printf ("%s\n", spec_machine); exit (0); } else if (strcmp (argv[i], "-fhelp") == 0) { /* translate_options () has turned --help into -fhelp. */ print_help_list = 1; /* We will be passing a dummy file on to the sub-processes. */ n_infiles++; n_switches++; add_preprocessor_option ("--help", 6); add_assembler_option ("--help", 6); add_linker_option ("--help", 6); } else if (strcmp (argv[i], "-ftarget-help") == 0) { /* translate_options() has turned --target-help into -ftarget-help. */ target_help_flag = 1; /* We will be passing a dummy file on to the sub-processes. */ n_infiles++; n_switches++; add_preprocessor_option ("--target-help", 13); add_assembler_option ("--target-help", 13); add_linker_option ("--target-help", 13); } else if (! strcmp (argv[i], "-pass-exit-codes")) { pass_exit_codes = 1; n_switches++; } else if (! strcmp (argv[i], "-print-search-dirs")) print_search_dirs = 1; else if (! strcmp (argv[i], "-print-libgcc-file-name")) print_file_name = "libgcc.a"; else if (! strncmp (argv[i], "-print-file-name=", 17)) print_file_name = argv[i] + 17; else if (! strncmp (argv[i], "-print-prog-name=", 17)) print_prog_name = argv[i] + 17; else if (! strcmp (argv[i], "-print-multi-lib")) print_multi_lib = 1; else if (! strcmp (argv[i], "-print-multi-directory")) print_multi_directory = 1; else if (! strncmp (argv[i], "-Wa,", 4)) { int prev, j; /* Pass the rest of this option to the assembler. */ /* Split the argument at commas. */ prev = 4; for (j = 4; argv[i][j]; j++) if (argv[i][j] == ',') { add_assembler_option (argv[i] + prev, j - prev); prev = j + 1; } /* Record the part after the last comma. */ add_assembler_option (argv[i] + prev, j - prev); } else if (! strncmp (argv[i], "-Wp,", 4)) { int prev, j; /* Pass the rest of this option to the preprocessor. */ /* Split the argument at commas. */ prev = 4; for (j = 4; argv[i][j]; j++) if (argv[i][j] == ',') { add_preprocessor_option (argv[i] + prev, j - prev); prev = j + 1; } /* Record the part after the last comma. */ add_preprocessor_option (argv[i] + prev, j - prev); } else if (argv[i][0] == '+' && argv[i][1] == 'e') /* The +e options to the C++ front-end. */ n_switches++; else if (strncmp (argv[i], "-Wl,", 4) == 0) { int j; /* Split the argument at commas. */ for (j = 3; argv[i][j]; j++) n_infiles += (argv[i][j] == ','); } else if (strcmp (argv[i], "-Xlinker") == 0) { if (i + 1 == argc) fatal ("argument to `-Xlinker' is missing"); n_infiles++; i++; } else if (strcmp (argv[i], "-l") == 0) { if (i + 1 == argc) fatal ("argument to `-l' is missing"); n_infiles++; i++; } else if (strncmp (argv[i], "-l", 2) == 0) n_infiles++; else if (strcmp (argv[i], "-save-temps") == 0) { save_temps_flag = 1; n_switches++; } else if (strcmp (argv[i], "-specs") == 0) { struct user_specs *user = (struct user_specs *) xmalloc (sizeof (struct user_specs)); if (++i >= argc) fatal ("argument to `-specs' is missing"); user->next = (struct user_specs *) 0; user->filename = argv[i]; if (user_specs_tail) user_specs_tail->next = user; else user_specs_head = user; user_specs_tail = user; } else if (strncmp (argv[i], "-specs=", 7) == 0) { struct user_specs *user = (struct user_specs *) xmalloc (sizeof (struct user_specs)); if (strlen (argv[i]) == 7) fatal ("argument to `-specs=' is missing"); user->next = (struct user_specs *) 0; user->filename = argv[i] + 7; if (user_specs_tail) user_specs_tail->next = user; else user_specs_head = user; user_specs_tail = user; } else if (strcmp (argv[i], "-time") == 0) report_times = 1; else if (argv[i][0] == '-' && argv[i][1] != 0) { const char *p = &argv[i][1]; int c = *p; switch (c) { case 'b': n_switches++; if (p[1] == 0 && i + 1 == argc) fatal ("argument to `-b' is missing"); if (p[1] == 0) spec_machine = argv[++i]; else spec_machine = p + 1; warn_std_ptr = &warn_std; break; case 'B': { const char *value; int len; if (p[1] == 0 && i + 1 == argc) fatal ("argument to `-B' is missing"); if (p[1] == 0) value = argv[++i]; else value = p + 1; len = strlen (value); /* Catch the case where the user has forgotten to append a directory separator to the path. Note, they may be using -B to add an executable name prefix, eg "i386-elf-", in order to distinguish between multiple installations of GCC in the same directory. Hence we must check to see if appending a directory separator actually makes a valid directory name. */ if (! IS_DIR_SEPARATOR (value [len - 1]) && is_directory (value, "", 0)) { char *tmp = xmalloc (len + 2); strcpy (tmp, value); tmp[len] = DIR_SEPARATOR; tmp[++ len] = 0; value = tmp; } /* As a kludge, if the arg is "[foo/]stageN/", just add "[foo/]include" to the include prefix. */ if ((len == 7 || (len > 7 && (IS_DIR_SEPARATOR (value[len - 8])))) && strncmp (value + len - 7, "stage", 5) == 0 && ISDIGIT (value[len - 2]) && (IS_DIR_SEPARATOR (value[len - 1]))) { if (len == 7) add_prefix (&include_prefixes, "include", NULL, PREFIX_PRIORITY_B_OPT, 0, NULL); else { char * string = xmalloc (len + 1); strncpy (string, value, len - 7); strcpy (string + len - 7, "include"); add_prefix (&include_prefixes, string, NULL, PREFIX_PRIORITY_B_OPT, 0, NULL); } } add_prefix (&exec_prefixes, value, NULL, PREFIX_PRIORITY_B_OPT, 0, &warn_B); add_prefix (&startfile_prefixes, value, NULL, PREFIX_PRIORITY_B_OPT, 0, &warn_B); add_prefix (&include_prefixes, concat (value, "include", NULL), NULL, PREFIX_PRIORITY_B_OPT, 0, NULL); n_switches++; } break; case 'v': /* Print our subcommands and print versions. */ n_switches++; /* If they do anything other than exactly `-v', don't set verbose_flag; rather, continue on to give the error. */ if (p[1] != 0) break; verbose_flag++; break; case 'V': n_switches++; if (p[1] == 0 && i + 1 == argc) fatal ("argument to `-V' is missing"); if (p[1] == 0) spec_version = argv[++i]; else spec_version = p + 1; compiler_version = spec_version; warn_std_ptr = &warn_std; /* Validate the version number. Use the same checks done when inserting it into a spec. The format of the version string is ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */ { const char *v = compiler_version; /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */ while (! ISDIGIT (*v)) v++; if (v > compiler_version && v[-1] != '-') fatal ("invalid version number format"); /* Set V after the first period. */ while (ISDIGIT (*v)) v++; if (*v != '.') fatal ("invalid version number format"); v++; while (ISDIGIT (*v)) v++; if (*v != 0 && *v != ' ' && *v != '.' && *v != '-') fatal ("invalid version number format"); } break; case 'S': case 'c': if (p[1] == 0) { have_c = 1; n_switches++; break; } goto normal_switch; case 'o': have_o = 1; #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) if (! have_c) { int skip; /* Forward scan, just in case -S or -c is specified after -o. */ int j = i + 1; if (p[1] == 0) ++j; while (j < argc) { if (argv[j][0] == '-') { if (SWITCH_CURTAILS_COMPILATION (argv[j][1]) && argv[j][2] == 0) { have_c = 1; break; } else if ((skip = SWITCH_TAKES_ARG (argv[j][1]))) j += skip - (argv[j][2] != 0); else if ((skip = WORD_SWITCH_TAKES_ARG (argv[j] + 1))) j += skip; } j++; } } #endif #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX) if (p[1] == 0) argv[i + 1] = convert_filename (argv[i + 1], ! have_c); else argv[i] = convert_filename (argv[i], ! have_c); #endif goto normal_switch; default: normal_switch: #ifdef MODIFY_TARGET_NAME is_modify_target_name = 0; for (j = 0; j < sizeof modify_target / sizeof modify_target[0]; j++) if (! strcmp (argv[i], modify_target[j].sw)) { char *new_name = (char *) xmalloc (strlen (modify_target[j].str) + strlen (spec_machine)); const char *p, *r; char *q; int made_addition = 0; is_modify_target_name = 1; for (p = spec_machine, q = new_name; *p != 0; ) { if (modify_target[j].add_del == DELETE && (! strncmp (q, modify_target[j].str, strlen (modify_target[j].str)))) p += strlen (modify_target[j].str); else if (modify_target[j].add_del == ADD && ! made_addition && *p == '-') { for (r = modify_target[j].str; *r != 0; ) *q++ = *r++; made_addition = 1; } *q++ = *p++; } spec_machine = new_name; } if (is_modify_target_name) break; #endif n_switches++; if (SWITCH_TAKES_ARG (c) > (p[1] != 0)) i += SWITCH_TAKES_ARG (c) - (p[1] != 0); else if (WORD_SWITCH_TAKES_ARG (p)) i += WORD_SWITCH_TAKES_ARG (p); } } else { n_infiles++; lang_n_infiles++; } } if (have_c && have_o && lang_n_infiles > 1) fatal ("cannot specify -o with -c or -S and multiple compilations"); /* Set up the search paths before we go looking for config files. */ /* These come before the md prefixes so that we will find gcc's subcommands (such as cpp) rather than those of the host system. */ /* Use 2 as fourth arg meaning try just the machine as a suffix, as well as trying the machine and the version. */ #ifndef OS2 add_prefix (&exec_prefixes, standard_exec_prefix, "GCC", PREFIX_PRIORITY_LAST, 1, warn_std_ptr); add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS", PREFIX_PRIORITY_LAST, 2, warn_std_ptr); add_prefix (&exec_prefixes, standard_exec_prefix_1, "BINUTILS", PREFIX_PRIORITY_LAST, 2, warn_std_ptr); #endif add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS", PREFIX_PRIORITY_LAST, 1, warn_std_ptr); add_prefix (&startfile_prefixes, standard_exec_prefix_1, "BINUTILS", PREFIX_PRIORITY_LAST, 1, warn_std_ptr); tooldir_prefix = concat (tooldir_base_prefix, spec_machine, dir_separator_str, NULL); /* If tooldir is relative, base it on exec_prefixes. A relative tooldir lets us move the installed tree as a unit. If GCC_EXEC_PREFIX is defined, then we want to add two relative directories, so that we can search both the user specified directory and the standard place. */ if (!IS_ABSOLUTE_PATHNAME (tooldir_prefix)) { if (gcc_exec_prefix) { char *gcc_exec_tooldir_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str, spec_version, dir_separator_str, tooldir_prefix, NULL); add_prefix (&exec_prefixes, concat (gcc_exec_tooldir_prefix, "bin", dir_separator_str, NULL), NULL, PREFIX_PRIORITY_LAST, 0, NULL); add_prefix (&startfile_prefixes, concat (gcc_exec_tooldir_prefix, "lib", dir_separator_str, NULL), NULL, PREFIX_PRIORITY_LAST, 0, NULL); } tooldir_prefix = concat (standard_exec_prefix, spec_machine, dir_separator_str, spec_version, dir_separator_str, tooldir_prefix, NULL); } add_prefix (&exec_prefixes, concat (tooldir_prefix, "bin", dir_separator_str, NULL), "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); add_prefix (&startfile_prefixes, concat (tooldir_prefix, "lib", dir_separator_str, NULL), "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); /* More prefixes are enabled in main, after we read the specs file and determine whether this is cross-compilation or not. */ /* Then create the space for the vectors and scan again. */ switches = ((struct switchstr *) xmalloc ((n_switches + 1) * sizeof (struct switchstr))); infiles = (struct infile *) xmalloc ((n_infiles + 1) * sizeof (struct infile)); n_switches = 0; n_infiles = 0; last_language_n_infiles = -1; /* This, time, copy the text of each switch and store a pointer to the copy in the vector of switches. Store all the infiles in their vector. */ for (i = 1; i < argc; i++) { /* Just skip the switches that were handled by the preceding loop. */ #ifdef MODIFY_TARGET_NAME is_modify_target_name = 0; for (j = 0; j < sizeof modify_target / sizeof modify_target[0]; j++) if (! strcmp (argv[i], modify_target[j].sw)) is_modify_target_name = 1; if (is_modify_target_name) ; else #endif if (! strncmp (argv[i], "-Wa,", 4)) ; else if (! strncmp (argv[i], "-Wp,", 4)) ; else if (! strcmp (argv[i], "-pass-exit-codes")) ; else if (! strcmp (argv[i], "-print-search-dirs")) ; else if (! strcmp (argv[i], "-print-libgcc-file-name")) ; else if (! strncmp (argv[i], "-print-file-name=", 17)) ; else if (! strncmp (argv[i], "-print-prog-name=", 17)) ; else if (! strcmp (argv[i], "-print-multi-lib")) ; else if (! strcmp (argv[i], "-print-multi-directory")) ; else if (strcmp (argv[i], "-ftarget-help") == 0) { /* Create a dummy input file, so that we can pass --target-help on to the various sub-processes. */ infiles[n_infiles].language = "c"; infiles[n_infiles++].name = "target-dummy"; /* Preserve the --target-help switch so that it can be caught by the cc1 spec string. */ switches[n_switches].part1 = "--target-help"; switches[n_switches].args = 0; switches[n_switches].live_cond = SWITCH_OK; switches[n_switches].validated = 0; n_switches++; } else if (strcmp (argv[i], "-fhelp") == 0) { if (verbose_flag) { /* Create a dummy input file, so that we can pass --help on to the various sub-processes. */ infiles[n_infiles].language = "c"; infiles[n_infiles++].name = "help-dummy"; /* Preserve the --help switch so that it can be caught by the cc1 spec string. */ switches[n_switches].part1 = "--help"; switches[n_switches].args = 0; switches[n_switches].live_cond = SWITCH_OK; switches[n_switches].validated = 0; n_switches++; } } else if (argv[i][0] == '+' && argv[i][1] == 'e') { /* Compensate for the +e options to the C++ front-end; they're there simply for cfront call-compatibility. We do some magic in default_compilers to pass them down properly. Note we deliberately start at the `+' here, to avoid passing -e0 or -e1 down into the linker. */ switches[n_switches].part1 = &argv[i][0]; switches[n_switches].args = 0; switches[n_switches].live_cond = SWITCH_OK; switches[n_switches].validated = 0; n_switches++; } else if (strncmp (argv[i], "-Wl,", 4) == 0) { int prev, j; /* Split the argument at commas. */ prev = 4; for (j = 4; argv[i][j]; j++) if (argv[i][j] == ',') { infiles[n_infiles].language = "*"; infiles[n_infiles++].name = save_string (argv[i] + prev, j - prev); prev = j + 1; } /* Record the part after the last comma. */ infiles[n_infiles].language = "*"; infiles[n_infiles++].name = argv[i] + prev; } else if (strcmp (argv[i], "-Xlinker") == 0) { infiles[n_infiles].language = "*"; infiles[n_infiles++].name = argv[++i]; } else if (strcmp (argv[i], "-l") == 0) { /* POSIX allows separation of -l and the lib arg; canonicalize by concatenating -l with its arg */ infiles[n_infiles].language = "*"; infiles[n_infiles++].name = concat ("-l", argv[++i], NULL); } else if (strncmp (argv[i], "-l", 2) == 0) { infiles[n_infiles].language = "*"; infiles[n_infiles++].name = argv[i]; } else if (strcmp (argv[i], "-specs") == 0) i++; else if (strncmp (argv[i], "-specs=", 7) == 0) ; else if (strcmp (argv[i], "-time") == 0) ; else if ((save_temps_flag || report_times) && strcmp (argv[i], "-pipe") == 0) { /* -save-temps overrides -pipe, so that temp files are produced */ if (save_temps_flag) error ("Warning: -pipe ignored because -save-temps specified"); /* -time overrides -pipe because we can't get correct stats when multiple children are running at once. */ else if (report_times) error ("Warning: -pipe ignored because -time specified"); } else if (argv[i][0] == '-' && argv[i][1] != 0) { const char *p = &argv[i][1]; int c = *p; if (c == 'x') { if (p[1] == 0 && i + 1 == argc) fatal ("argument to `-x' is missing"); if (p[1] == 0) spec_lang = argv[++i]; else spec_lang = p + 1; if (! strcmp (spec_lang, "none")) /* Suppress the warning if -xnone comes after the last input file, because alternate command interfaces like g++ might find it useful to place -xnone after each input file. */ spec_lang = 0; else last_language_n_infiles = n_infiles; continue; } switches[n_switches].part1 = p; /* Deal with option arguments in separate argv elements. */ if ((SWITCH_TAKES_ARG (c) > (p[1] != 0)) || WORD_SWITCH_TAKES_ARG (p)) { int j = 0; int n_args = WORD_SWITCH_TAKES_ARG (p); if (n_args == 0) { /* Count only the option arguments in separate argv elements. */ n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0); } if (i + n_args >= argc) fatal ("argument to `-%s' is missing", p); switches[n_switches].args = (const char **) xmalloc ((n_args + 1) * sizeof(const char *)); while (j < n_args) switches[n_switches].args[j++] = argv[++i]; /* Null-terminate the vector. */ switches[n_switches].args[j] = 0; } else if (strchr (switches_need_spaces, c)) { /* On some systems, ld cannot handle some options without a space. So split the option from its argument. */ char *part1 = (char *) xmalloc (2); part1[0] = c; part1[1] = '\0'; switches[n_switches].part1 = part1; switches[n_switches].args = (const char **) xmalloc (2 * sizeof (const char *)); switches[n_switches].args[0] = xstrdup (p+1); switches[n_switches].args[1] = 0; } else switches[n_switches].args = 0; switches[n_switches].live_cond = SWITCH_OK; switches[n_switches].validated = 0; switches[n_switches].ordering = 0; /* These are always valid, since gcc.c itself understands it. */ if (!strcmp (p, "save-temps") || !strcmp (p, "static-libgcc") || !strcmp (p, "shared-libgcc")) switches[n_switches].validated = 1; else { char ch = switches[n_switches].part1[0]; if (ch == 'V' || ch == 'b' || ch == 'B') switches[n_switches].validated = 1; } n_switches++; } else { #ifdef HAVE_TARGET_OBJECT_SUFFIX argv[i] = convert_filename (argv[i], 0); #endif if (strcmp (argv[i], "-") != 0 && access (argv[i], F_OK) < 0) { perror_with_name (argv[i]); error_count++; } else { infiles[n_infiles].language = spec_lang; infiles[n_infiles++].name = argv[i]; } } } if (n_infiles == last_language_n_infiles && spec_lang != 0) error ("Warning: `-x %s' after last input file has no effect", spec_lang); switches[n_switches].part1 = 0; infiles[n_infiles].name = 0; } /* Process a spec string, accumulating and running commands. */ /* These variables describe the input file name. input_file_number is the index on outfiles of this file, so that the output file name can be stored for later use by %o. input_basename is the start of the part of the input file sans all directory names, and basename_length is the number of characters starting there excluding the suffix .c or whatever. */ const char *input_filename; static int input_file_number; size_t input_filename_length; static int basename_length; static int suffixed_basename_length; static const char *input_basename; static const char *input_suffix; /* The compiler used to process the current input file. */ static struct compiler *input_file_compiler; /* These are variables used within do_spec and do_spec_1. */ /* Nonzero if an arg has been started and not yet terminated (with space, tab or newline). */ static int arg_going; /* Nonzero means %d or %g has been seen; the next arg to be terminated is a temporary file name. */ static int delete_this_arg; /* Nonzero means %w has been seen; the next arg to be terminated is the output file name of this compilation. */ static int this_is_output_file; /* Nonzero means %s has been seen; the next arg to be terminated is the name of a library file and we should try the standard search dirs for it. */ static int this_is_library_file; /* Nonzero means that the input of this command is coming from a pipe. */ static int input_from_pipe; /* Nonnull means substitute this for any suffix when outputting a switches arguments. */ static const char *suffix_subst; /* Process the spec SPEC and run the commands specified therein. Returns 0 if the spec is successfully processed; -1 if failed. */ int do_spec (spec) const char *spec; { int value; clear_args (); arg_going = 0; delete_this_arg = 0; this_is_output_file = 0; this_is_library_file = 0; input_from_pipe = 0; suffix_subst = NULL; value = do_spec_1 (spec, 0, NULL); /* Force out any unfinished command. If -pipe, this forces out the last command if it ended in `|'. */ if (value == 0) { if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|")) argbuf_index--; if (argbuf_index > 0) value = execute (); } return value; } /* Process the sub-spec SPEC as a portion of a larger spec. This is like processing a whole spec except that we do not initialize at the beginning and we do not supply a newline by default at the end. INSWITCH nonzero means don't process %-sequences in SPEC; in this case, % is treated as an ordinary character. This is used while substituting switches. INSWITCH nonzero also causes SPC not to terminate an argument. Value is zero unless a line was finished and the command on that line reported an error. */ static int do_spec_1 (spec, inswitch, soft_matched_part) const char *spec; int inswitch; const char *soft_matched_part; { const char *p = spec; int c; int i; const char *string; int value; while ((c = *p++)) /* If substituting a switch, treat all chars like letters. Otherwise, NL, SPC, TAB and % are special. */ switch (inswitch ? 'a' : c) { case '\n': /* End of line: finish any pending argument, then run the pending command if one has been started. */ if (arg_going) { obstack_1grow (&obstack, 0); string = obstack_finish (&obstack); if (this_is_library_file) string = find_file (string); store_arg (string, delete_this_arg, this_is_output_file); if (this_is_output_file) outfiles[input_file_number] = string; } arg_going = 0; if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|")) { for (i = 0; i < n_switches; i++) if (!strcmp (switches[i].part1, "pipe")) break; /* A `|' before the newline means use a pipe here, but only if -pipe was specified. Otherwise, execute now and don't pass the `|' as an arg. */ if (i < n_switches) { input_from_pipe = 1; switches[i].validated = 1; break; } else argbuf_index--; } if (argbuf_index > 0) { value = execute (); if (value) return value; } /* Reinitialize for a new command, and for a new argument. */ clear_args (); arg_going = 0; delete_this_arg = 0; this_is_output_file = 0; this_is_library_file = 0; input_from_pipe = 0; break; case '|': /* End any pending argument. */ if (arg_going) { obstack_1grow (&obstack, 0); string = obstack_finish (&obstack); if (this_is_library_file) string = find_file (string); store_arg (string, delete_this_arg, this_is_output_file); if (this_is_output_file) outfiles[input_file_number] = string; } /* Use pipe */ obstack_1grow (&obstack, c); arg_going = 1; break; case '\t': case ' ': /* Space or tab ends an argument if one is pending. */ if (arg_going) { obstack_1grow (&obstack, 0); string = obstack_finish (&obstack); if (this_is_library_file) string = find_file (string); store_arg (string, delete_this_arg, this_is_output_file); if (this_is_output_file) outfiles[input_file_number] = string; } /* Reinitialize for a new argument. */ arg_going = 0; delete_this_arg = 0; this_is_output_file = 0; this_is_library_file = 0; break; case '%': switch (c = *p++) { case 0: fatal ("Invalid specification! Bug in cc."); case 'b': obstack_grow (&obstack, input_basename, basename_length); arg_going = 1; break; case 'B': obstack_grow (&obstack, input_basename, suffixed_basename_length); arg_going = 1; break; case 'd': delete_this_arg = 2; break; /* Dump out the directories specified with LIBRARY_PATH, followed by the absolute directories that we search for startfiles. */ case 'D': { struct prefix_list *pl = startfile_prefixes.plist; size_t bufsize = 100; char *buffer = (char *) xmalloc (bufsize); int idx; for (; pl; pl = pl->next) { #ifdef RELATIVE_PREFIX_NOT_LINKDIR /* Used on systems which record the specified -L dirs and use them to search for dynamic linking. */ /* Relative directories always come from -B, and it is better not to use them for searching at run time. In particular, stage1 loses. */ if (!IS_ABSOLUTE_PATHNAME (pl->prefix)) continue; #endif /* Try subdirectory if there is one. */ if (multilib_dir != NULL) { if (machine_suffix) { if (strlen (pl->prefix) + strlen (machine_suffix) >= bufsize) bufsize = (strlen (pl->prefix) + strlen (machine_suffix)) * 2 + 1; buffer = (char *) xrealloc (buffer, bufsize); strcpy (buffer, pl->prefix); strcat (buffer, machine_suffix); if (is_directory (buffer, multilib_dir, 1)) { do_spec_1 ("-L", 0, NULL); #ifdef SPACE_AFTER_L_OPTION do_spec_1 (" ", 0, NULL); #endif do_spec_1 (buffer, 1, NULL); do_spec_1 (multilib_dir, 1, NULL); /* Make this a separate argument. */ do_spec_1 (" ", 0, NULL); } } if (!pl->require_machine_suffix) { if (is_directory (pl->prefix, multilib_dir, 1)) { do_spec_1 ("-L", 0, NULL); #ifdef SPACE_AFTER_L_OPTION do_spec_1 (" ", 0, NULL); #endif do_spec_1 (pl->prefix, 1, NULL); do_spec_1 (multilib_dir, 1, NULL); /* Make this a separate argument. */ do_spec_1 (" ", 0, NULL); } } } if (machine_suffix) { if (is_directory (pl->prefix, machine_suffix, 1)) { do_spec_1 ("-L", 0, NULL); #ifdef SPACE_AFTER_L_OPTION do_spec_1 (" ", 0, NULL); #endif do_spec_1 (pl->prefix, 1, NULL); /* Remove slash from machine_suffix. */ if (strlen (machine_suffix) >= bufsize) bufsize = strlen (machine_suffix) * 2 + 1; buffer = (char *) xrealloc (buffer, bufsize); strcpy (buffer, machine_suffix); idx = strlen (buffer); if (IS_DIR_SEPARATOR (buffer[idx - 1])) buffer[idx - 1] = 0; do_spec_1 (buffer, 1, NULL); /* Make this a separate argument. */ do_spec_1 (" ", 0, NULL); } } if (!pl->require_machine_suffix) { if (is_directory (pl->prefix, "", 1)) { do_spec_1 ("-L", 0, NULL); #ifdef SPACE_AFTER_L_OPTION do_spec_1 (" ", 0, NULL); #endif /* Remove slash from pl->prefix. */ if (strlen (pl->prefix) >= bufsize) bufsize = strlen (pl->prefix) * 2 + 1; buffer = (char *) xrealloc (buffer, bufsize); strcpy (buffer, pl->prefix); idx = strlen (buffer); if (IS_DIR_SEPARATOR (buffer[idx - 1])) buffer[idx - 1] = 0; do_spec_1 (buffer, 1, NULL); /* Make this a separate argument. */ do_spec_1 (" ", 0, NULL); } } } free (buffer); } break; case 'e': /* %efoo means report an error with `foo' as error message and don't execute any more commands for this file. */ { const char *q = p; char *buf; while (*p != 0 && *p != '\n') p++; buf = (char *) alloca (p - q + 1); strncpy (buf, q, p - q); buf[p - q] = 0; error ("%s", buf); return -1; } break; case 'n': /* %nfoo means report an notice with `foo' on stderr. */ { const char *q = p; char *buf; while (*p != 0 && *p != '\n') p++; buf = (char *) alloca (p - q + 1); strncpy (buf, q, p - q); buf[p - q] = 0; notice ("%s\n", buf); if (*p) p++; } break; case 'j': { struct stat st; /* If save_temps_flag is off, and the HOST_BIT_BUCKET is defined, and it is not a directory, and it is writable, use it. Otherwise, fall through and treat this like any other temporary file. */ if ((!save_temps_flag) && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode)) && (access (HOST_BIT_BUCKET, W_OK) == 0)) { obstack_grow (&obstack, HOST_BIT_BUCKET, strlen (HOST_BIT_BUCKET)); delete_this_arg = 0; arg_going = 1; break; } } case 'g': case 'u': case 'U': if (save_temps_flag) { obstack_grow (&obstack, input_basename, basename_length); delete_this_arg = 0; } else { struct temp_name *t; int suffix_length; const char *suffix = p; char *saved_suffix = NULL; while (*p == '.' || ISALPHA ((unsigned char) *p)) p++; suffix_length = p - suffix; if (p[0] == '%' && p[1] == 'O') { p += 2; /* We don't support extra suffix characters after %O. */ if (*p == '.' || ISALPHA ((unsigned char) *p)) abort (); if (suffix_length == 0) suffix = TARGET_OBJECT_SUFFIX; else { saved_suffix = (char *) xmalloc (suffix_length + strlen (TARGET_OBJECT_SUFFIX)); strncpy (saved_suffix, suffix, suffix_length); strcpy (saved_suffix + suffix_length, TARGET_OBJECT_SUFFIX); } suffix_length += strlen (TARGET_OBJECT_SUFFIX); } /* See if we already have an association of %g/%u/%U and suffix. */ for (t = temp_names; t; t = t->next) if (t->length == suffix_length && strncmp (t->suffix, suffix, suffix_length) == 0 && t->unique == (c != 'g')) break; /* Make a new association if needed. %u and %j require one. */ if (t == 0 || c == 'u' || c == 'j') { if (t == 0) { t = (struct temp_name *) xmalloc (sizeof (struct temp_name)); t->next = temp_names; temp_names = t; } t->length = suffix_length; if (saved_suffix) { t->suffix = saved_suffix; saved_suffix = NULL; } else t->suffix = save_string (suffix, suffix_length); t->unique = (c != 'g'); temp_filename = make_temp_file (t->suffix); temp_filename_length = strlen (temp_filename); t->filename = temp_filename; t->filename_length = temp_filename_length; } if (saved_suffix) free (saved_suffix); obstack_grow (&obstack, t->filename, t->filename_length); delete_this_arg = 1; } arg_going = 1; break; case 'i': obstack_grow (&obstack, input_filename, input_filename_length); arg_going = 1; break; case 'I': { struct prefix_list *pl = include_prefixes.plist; if (gcc_exec_prefix) { do_spec_1 ("-iprefix", 1, NULL); /* Make this a separate argument. */ do_spec_1 (" ", 0, NULL); do_spec_1 (gcc_exec_prefix, 1, NULL); do_spec_1 (" ", 0, NULL); } for (; pl; pl = pl->next) { do_spec_1 ("-isystem", 1, NULL); /* Make this a separate argument. */ do_spec_1 (" ", 0, NULL); do_spec_1 (pl->prefix, 1, NULL); do_spec_1 (" ", 0, NULL); } } break; case 'o': { int max = n_infiles; max += lang_specific_extra_outfiles; for (i = 0; i < max; i++) if (outfiles[i]) store_arg (outfiles[i], 0, 0); break; } case 'O': obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX)); arg_going = 1; break; case 's': this_is_library_file = 1; break; case 'w': this_is_output_file = 1; break; case 'W': { int cur_index = argbuf_index; /* Handle the {...} following the %W. */ if (*p != '{') abort (); p = handle_braces (p + 1); if (p == 0) return -1; /* If any args were output, mark the last one for deletion on failure. */ if (argbuf_index != cur_index) record_temp_file (argbuf[argbuf_index - 1], 0, 1); break; } /* %x{OPTION} records OPTION for %X to output. */ case 'x': { const char *p1 = p; char *string; /* Skip past the option value and make a copy. */ if (*p != '{') abort (); while (*p++ != '}') ; string = save_string (p1 + 1, p - p1 - 2); /* See if we already recorded this option. */ for (i = 0; i < n_linker_options; i++) if (! strcmp (string, linker_options[i])) { free (string); return 0; } /* This option is new; add it. */ add_linker_option (string, strlen (string)); } break; /* Dump out the options accumulated previously using %x. */ case 'X': for (i = 0; i < n_linker_options; i++) { do_spec_1 (linker_options[i], 1, NULL); /* Make each accumulated option a separate argument. */ do_spec_1 (" ", 0, NULL); } break; /* Dump out the options accumulated previously using -Wa,. */ case 'Y': for (i = 0; i < n_assembler_options; i++) { do_spec_1 (assembler_options[i], 1, NULL); /* Make each accumulated option a separate argument. */ do_spec_1 (" ", 0, NULL); } break; /* Dump out the options accumulated previously using -Wp,. */ case 'Z': for (i = 0; i < n_preprocessor_options; i++) { do_spec_1 (preprocessor_options[i], 1, NULL); /* Make each accumulated option a separate argument. */ do_spec_1 (" ", 0, NULL); } break; /* Here are digits and numbers that just process a certain constant string as a spec. */ case '1': value = do_spec_1 (cc1_spec, 0, NULL); if (value != 0) return value; break; case '2': value = do_spec_1 (cc1plus_spec, 0, NULL); if (value != 0) return value; break; case 'a': value = do_spec_1 (asm_spec, 0, NULL); if (value != 0) return value; break; case 'A': value = do_spec_1 (asm_final_spec, 0, NULL); if (value != 0) return value; break; case 'c': value = do_spec_1 (signed_char_spec, 0, NULL); if (value != 0) return value; break; case 'C': { const char *const spec = (input_file_compiler->cpp_spec ? input_file_compiler->cpp_spec : cpp_spec); value = do_spec_1 (spec, 0, NULL); if (value != 0) return value; } break; case 'E': value = do_spec_1 (endfile_spec, 0, NULL); if (value != 0) return value; break; case 'l': value = do_spec_1 (link_spec, 0, NULL); if (value != 0) return value; break; case 'L': value = do_spec_1 (lib_spec, 0, NULL); if (value != 0) return value; break; case 'G': value = do_spec_1 (libgcc_spec, 0, NULL); if (value != 0) return value; break; case 'M': if (multilib_dir && strcmp (multilib_dir, ".") != 0) { char *p; const char *q; size_t len; len = strlen (multilib_dir); obstack_blank (&obstack, len + 1); p = obstack_next_free (&obstack) - (len + 1); *p++ = '_'; for (q = multilib_dir; *q ; ++q, ++p) *p = (IS_DIR_SEPARATOR (*q) ? '_' : *q); } break; case 'p': { char *x = (char *) alloca (strlen (cpp_predefines) + 1); char *buf = x; const char *y; /* Copy all of the -D options in CPP_PREDEFINES into BUF. */ y = cpp_predefines; while (*y != 0) { if (! strncmp (y, "-D", 2)) /* Copy the whole option. */ while (*y && *y != ' ' && *y != '\t') *x++ = *y++; else if (*y == ' ' || *y == '\t') /* Copy whitespace to the result. */ *x++ = *y++; /* Don't copy other options. */ else y++; } *x = 0; value = do_spec_1 (buf, 0, NULL); if (value != 0) return value; } break; case 'P': { char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1); char *buf = x; const char *y; /* Copy all of CPP_PREDEFINES into BUF, but force them all into the reserved name space if they aren't already there. The reserved name space is all identifiers beginning with two underscores or with one underscore and a capital letter. We do the forcing by adding up to two underscores to the beginning and end of each symbol. e.g. mips, _mips, mips_, and _mips_ all become __mips__. */ y = cpp_predefines; while (*y != 0) { if (! strncmp (y, "-D", 2)) { int flag = 0; *x++ = *y++; *x++ = *y++; if (*y != '_' || (*(y + 1) != '_' && ! ISUPPER ((unsigned char) *(y + 1)))) { /* Stick __ at front of macro name. */ if (*y != '_') *x++ = '_'; *x++ = '_'; /* Arrange to stick __ at the end as well. */ flag = 1; } /* Copy the macro name. */ while (*y && *y != '=' && *y != ' ' && *y != '\t') *x++ = *y++; if (flag) { if (x[-1] != '_') { if (x[-2] != '_') *x++ = '_'; *x++ = '_'; } } /* Copy the value given, if any. */ while (*y && *y != ' ' && *y != '\t') *x++ = *y++; } else if (*y == ' ' || *y == '\t') /* Copy whitespace to the result. */ *x++ = *y++; /* Don't copy -A options */ else y++; } *x++ = ' '; /* Copy all of CPP_PREDEFINES into BUF, but put __ after every -D. */ y = cpp_predefines; while (*y != 0) { if (! strncmp (y, "-D", 2)) { y += 2; if (*y != '_' || (*(y + 1) != '_' && ! ISUPPER ((unsigned char) *(y + 1)))) { /* Stick -D__ at front of macro name. */ *x++ = '-'; *x++ = 'D'; if (*y != '_') *x++ = '_'; *x++ = '_'; /* Copy the macro name. */ while (*y && *y != '=' && *y != ' ' && *y != '\t') *x++ = *y++; /* Copy the value given, if any. */ while (*y && *y != ' ' && *y != '\t') *x++ = *y++; } else { /* Do not copy this macro - we have just done it before */ while (*y && *y != ' ' && *y != '\t') y++; } } else if (*y == ' ' || *y == '\t') /* Copy whitespace to the result. */ *x++ = *y++; /* Don't copy -A options. */ else y++; } *x++ = ' '; /* Copy all of the -A options in CPP_PREDEFINES into BUF. */ y = cpp_predefines; while (*y != 0) { if (! strncmp (y, "-A", 2)) /* Copy the whole option. */ while (*y && *y != ' ' && *y != '\t') *x++ = *y++; else if (*y == ' ' || *y == '\t') /* Copy whitespace to the result. */ *x++ = *y++; /* Don't copy other options. */ else y++; } *x = 0; value = do_spec_1 (buf, 0, NULL); if (value != 0) return value; } break; case 'S': value = do_spec_1 (startfile_spec, 0, NULL); if (value != 0) return value; break; /* Here we define characters other than letters and digits. */ case '{': p = handle_braces (p); if (p == 0) return -1; break; case '%': obstack_1grow (&obstack, '%'); break; case '.': { unsigned len = 0; while (p[len] && p[len] != ' ' && p[len] != '%') len++; suffix_subst = save_string (p - 1, len + 1); p += len; } break; case '*': if (soft_matched_part) { do_spec_1 (soft_matched_part, 1, NULL); do_spec_1 (" ", 0, NULL); } else /* Catch the case where a spec string contains something like '%{foo:%*}'. ie there is no * in the pattern on the left hand side of the :. */ error ("Spec failure: '%%*' has not been initialised by pattern match"); break; /* Process a string found as the value of a spec given by name. This feature allows individual machine descriptions to add and use their own specs. %[...] modifies -D options the way %P does; %(...) uses the spec unmodified. */ case '[': error ("Warning: use of obsolete %%[ operator in specs"); case '(': { const char *name = p; struct spec_list *sl; int len; /* The string after the S/P is the name of a spec that is to be processed. */ while (*p && *p != ')' && *p != ']') p++; /* See if it's in the list. */ for (len = p - name, sl = specs; sl; sl = sl->next) if (sl->name_len == len && !strncmp (sl->name, name, len)) { name = *(sl->ptr_spec); #ifdef DEBUG_SPECS notice ("Processing spec %c%s%c, which is '%s'\n", c, sl->name, (c == '(') ? ')' : ']', name); #endif break; } if (sl) { if (c == '(') { value = do_spec_1 (name, 0, NULL); if (value != 0) return value; } else { char *x = (char *) alloca (strlen (name) * 2 + 1); char *buf = x; const char *y = name; int flag = 0; /* Copy all of NAME into BUF, but put __ after every -D and at the end of each arg. */ while (1) { if (! strncmp (y, "-D", 2)) { *x++ = '-'; *x++ = 'D'; *x++ = '_'; *x++ = '_'; y += 2; flag = 1; continue; } else if (flag && (*y == ' ' || *y == '\t' || *y == '=' || *y == '}' || *y == 0)) { *x++ = '_'; *x++ = '_'; flag = 0; } if (*y == 0) break; else *x++ = *y++; } *x = 0; value = do_spec_1 (buf, 0, NULL); if (value != 0) return value; } } /* Discard the closing paren or bracket. */ if (*p) p++; } break; case 'v': { int c1 = *p++; /* Select first or second version number. */ const char *v = compiler_version; const char *q; static const char zeroc = '0'; /* The format of the version string is ([^0-9]*-)?[0-9]+[.][0-9]+([.][0-9]+)?([- ].*)? */ /* Ignore leading non-digits. i.e. "foo-" in "foo-2.7.2". */ while (! ISDIGIT (*v)) v++; if (v > compiler_version && v[-1] != '-') abort (); /* If desired, advance to second version number. */ if (c1 >= '2') { /* Set V after the first period. */ while (ISDIGIT (*v)) v++; if (*v != '.') abort (); v++; } /* If desired, advance to third version number. But don't complain if it's not present */ if (c1 == '3') { /* Set V after the second period. */ while (ISDIGIT (*v)) v++; if ((*v != 0) && (*v != ' ') && (*v != '.') && (*v != '-')) abort (); if (*v != 0) v++; } /* Set Q at the next period or at the end. */ q = v; while (ISDIGIT (*q)) q++; if (*q != 0 && q > v && *q != ' ' && *q != '.' && *q != '-') abort (); if (q > v) /* Put that part into the command. */ obstack_grow (&obstack, v, q - v); else /* Default to "0" */ obstack_grow (&obstack, &zeroc, 1); arg_going = 1; } break; case '|': if (input_from_pipe) do_spec_1 ("-", 0, NULL); break; default: error ("Spec failure: Unrecognised spec option '%c'", c); break; } break; case '\\': /* Backslash: treat next character as ordinary. */ c = *p++; /* fall through */ default: /* Ordinary character: put it into the current argument. */ obstack_1grow (&obstack, c); arg_going = 1; } /* End of string. */ return 0; } /* Return 0 if we call do_spec_1 and that returns -1. */ static const char * handle_braces (p) const char *p; { const char *filter, *body = NULL, *endbody = NULL; int pipe_p = 0; int true_once = 0; /* If, in %{a|b:d}, at least one of a,b was seen. */ int negate; int suffix; int include_blanks = 1; int elide_switch = 0; int ordered = 0; if (*p == '^') { /* A '^' after the open-brace means to not give blanks before args. */ include_blanks = 0; ++p; } if (*p == '|') { /* A `|' after the open-brace means, if the test fails, output a single minus sign rather than nothing. This is used in %{|!pipe:...}. */ pipe_p = 1; ++p; } if (*p == '<') { /* A `<' after the open-brace means that the switch should be removed from the command-line. */ elide_switch = 1; ++p; } next_member: negate = suffix = 0; if (*p == '!') /* A `!' after the open-brace negates the condition: succeed if the specified switch is not present. */ negate = 1, ++p; if (*p == '.') /* A `.' after the open-brace means test against the current suffix. */ { if (pipe_p) abort (); suffix = 1; ++p; } if (elide_switch && (negate || pipe_p || suffix)) { /* It doesn't make sense to mix elision with other flags. We could fatal() here, but the standard seems to be to abort. */ abort (); } next_ampersand: filter = p; while (*p != ':' && *p != '}' && *p != '|' && *p != '&') p++; if (*p == '|' && (pipe_p || ordered)) abort (); if (!body) { if (*p != '}' && *p != '&') { int count = 1; const char *q = p; while (*q++ != ':') continue; body = q; while (count > 0) { if (*q == '{') count++; else if (*q == '}') count--; else if (*q == 0) fatal ("Mismatched braces in specs"); q++; } endbody = q; } else body = p, endbody = p + 1; } if (suffix) { int found = (input_suffix != 0 && (long) strlen (input_suffix) == (long) (p - filter) && strncmp (input_suffix, filter, p - filter) == 0); if (body[0] == '}') abort (); if (negate != found && do_spec_1 (save_string (body, endbody-body-1), 0, NULL) < 0) return 0; } else if (p[-1] == '*' && (p[0] == '}' || p[0] == '&')) { /* Substitute all matching switches as separate args. */ int i; for (i = 0; i < n_switches; i++) if (!strncmp (switches[i].part1, filter, p - 1 - filter) && check_live_switch (i, p - 1 - filter)) { if (elide_switch) { switches[i].live_cond = SWITCH_IGNORE; switches[i].validated = 1; } else ordered = 1, switches[i].ordering = 1; } } else { /* Test for presence of the specified switch. */ int i; int present = 0; /* If name specified ends in *, as in {x*:...}, check for %* and handle that case. */ if (p[-1] == '*' && !negate) { int substitution; const char *r = body; /* First see whether we have %*. */ substitution = 0; while (r < endbody) { if (*r == '%' && r[1] == '*') substitution = 1; r++; } /* If we do, handle that case. */ if (substitution) { /* Substitute all matching switches as separate args. But do this by substituting for %* in the text that follows the colon. */ unsigned hard_match_len = p - filter - 1; char *string = save_string (body, endbody - body - 1); for (i = 0; i < n_switches; i++) if (!strncmp (switches[i].part1, filter, hard_match_len) && check_live_switch (i, -1)) { do_spec_1 (string, 0, &switches[i].part1[hard_match_len]); /* Pass any arguments this switch has. */ give_switch (i, 1, 1); suffix_subst = NULL; } /* We didn't match. Try again. */ if (*p++ == '|') goto next_member; return endbody; } } /* If name specified ends in *, as in {x*:...}, check for presence of any switch name starting with x. */ if (p[-1] == '*') { for (i = 0; i < n_switches; i++) { unsigned hard_match_len = p - filter - 1; if (!strncmp (switches[i].part1, filter, hard_match_len) && check_live_switch (i, hard_match_len)) { present = 1; break; } } } /* Otherwise, check for presence of exact name specified. */ else { for (i = 0; i < n_switches; i++) { if (!strncmp (switches[i].part1, filter, p - filter) && switches[i].part1[p - filter] == 0 && check_live_switch (i, -1)) { present = 1; break; } } } /* If it is as desired (present for %{s...}, absent for %{!s...}) then substitute either the switch or the specified conditional text. */ if (present != negate) { if (elide_switch) { switches[i].live_cond = SWITCH_IGNORE; switches[i].validated = 1; } else if (ordered || *p == '&') ordered = 1, switches[i].ordering = 1; else if (*p == '}') give_switch (i, 0, include_blanks); else /* Even if many alternatives are matched, only output once. */ true_once = 1; } else if (pipe_p) { /* Here if a %{|...} conditional fails: output a minus sign, which means "standard output" or "standard input". */ do_spec_1 ("-", 0, NULL); return endbody; } } /* We didn't match; try again. */ if (*p++ == '|') goto next_member; if (p[-1] == '&') { body = 0; goto next_ampersand; } if (ordered) { int i; /* Doing this set of switches later preserves their command-line ordering. This is needed for e.g. -U, -D and -A. */ for (i = 0; i < n_switches; i++) if (switches[i].ordering == 1) { switches[i].ordering = 0; give_switch (i, 0, include_blanks); } } /* Process the spec just once, regardless of match count. */ else if (true_once) { if (do_spec_1 (save_string (body, endbody - body - 1), 0, NULL) < 0) return 0; } return endbody; } /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*} spec, or -1 if either exact match or %* is used. A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch whose value does not begin with "no-" is obsoleted by the same value with the "no-", similarly for a switch with the "no-" prefix. */ static int check_live_switch (switchnum, prefix_length) int switchnum; int prefix_length; { const char *name = switches[switchnum].part1; int i; /* In the common case of {*}, a negating switch would always match, so ignore that case. We will just send the conflicting switches to the compiler phase. */ if (prefix_length >= 0 && prefix_length <= 1) return 1; /* If we already processed this switch and determined if it was live or not, return our past determination. */ if (switches[switchnum].live_cond != 0) return switches[switchnum].live_cond > 0; /* Now search for duplicate in a manner that depends on the name. */ switch (*name) { case 'O': for (i = switchnum + 1; i < n_switches; i++) if (switches[i].part1[0] == 'O') { switches[switchnum].validated = 1; switches[switchnum].live_cond = SWITCH_FALSE; return 0; } break; case 'W': case 'f': case 'm': if (! strncmp (name + 1, "no-", 3)) { /* We have Xno-YYY, search for XYYY. */ for (i = switchnum + 1; i < n_switches; i++) if (switches[i].part1[0] == name[0] && ! strcmp (&switches[i].part1[1], &name[4])) { switches[switchnum].validated = 1; switches[switchnum].live_cond = SWITCH_FALSE; return 0; } } else { /* We have XYYY, search for Xno-YYY. */ for (i = switchnum + 1; i < n_switches; i++) if (switches[i].part1[0] == name[0] && switches[i].part1[1] == 'n' && switches[i].part1[2] == 'o' && switches[i].part1[3] == '-' && !strcmp (&switches[i].part1[4], &name[1])) { switches[switchnum].validated = 1; switches[switchnum].live_cond = SWITCH_FALSE; return 0; } } break; } /* Otherwise the switch is live. */ switches[switchnum].live_cond = SWITCH_LIVE; return 1; } /* Pass a switch to the current accumulating command in the same form that we received it. SWITCHNUM identifies the switch; it is an index into the vector of switches gcc received, which is `switches'. This cannot fail since it never finishes a command line. If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. If INCLUDE_BLANKS is nonzero, then we include blanks before each argument of the switch. */ static void give_switch (switchnum, omit_first_word, include_blanks) int switchnum; int omit_first_word; int include_blanks; { if (switches[switchnum].live_cond == SWITCH_IGNORE) return; if (!omit_first_word) { do_spec_1 ("-", 0, NULL); do_spec_1 (switches[switchnum].part1, 1, NULL); } if (switches[switchnum].args != 0) { const char **p; for (p = switches[switchnum].args; *p; p++) { const char *arg = *p; if (include_blanks) do_spec_1 (" ", 0, NULL); if (suffix_subst) { unsigned length = strlen (arg); int dot = 0; while (length-- && !IS_DIR_SEPARATOR (arg[length])) if (arg[length] == '.') { ((char *)arg)[length] = 0; dot = 1; break; } do_spec_1 (arg, 1, NULL); if (dot) ((char *)arg)[length] = '.'; do_spec_1 (suffix_subst, 1, NULL); } else do_spec_1 (arg, 1, NULL); } } do_spec_1 (" ", 0, NULL); switches[switchnum].validated = 1; } /* Search for a file named NAME trying various prefixes including the user's -B prefix and some standard ones. Return the absolute file name found. If nothing is found, return NAME. */ static const char * find_file (name) const char *name; { char *newname; /* Try multilib_dir if it is defined. */ if (multilib_dir != NULL) { const char *const try = ACONCAT ((multilib_dir, dir_separator_str, name, NULL)); newname = find_a_file (&startfile_prefixes, try, R_OK); /* If we don't find it in the multi library dir, then fall through and look for it in the normal places. */ if (newname != NULL) return newname; } newname = find_a_file (&startfile_prefixes, name, R_OK); return newname ? newname : name; } /* Determine whether a directory exists. If LINKER, return 0 for certain fixed names not needed by the linker. If not LINKER, it is only important to return 0 if the host machine has a small ARG_MAX limit. */ static int is_directory (path1, path2, linker) const char *path1; const char *path2; int linker; { int len1 = strlen (path1); int len2 = strlen (path2); char *path = (char *) alloca (3 + len1 + len2); char *cp; struct stat st; #ifndef SMALL_ARG_MAX if (! linker) return 1; #endif /* Construct the path from the two parts. Ensure the string ends with "/.". The resulting path will be a directory even if the given path is a symbolic link. */ memcpy (path, path1, len1); memcpy (path + len1, path2, len2); cp = path + len1 + len2; if (!IS_DIR_SEPARATOR (cp[-1])) *cp++ = DIR_SEPARATOR; *cp++ = '.'; *cp = '\0'; /* Exclude directories that the linker is known to search. */ if (linker && ((cp - path == 6 && strcmp (path, concat (dir_separator_str, "lib", dir_separator_str, ".", NULL)) == 0) || (cp - path == 10 && strcmp (path, concat (dir_separator_str, "usr", dir_separator_str, "lib", dir_separator_str, ".", NULL)) == 0))) return 0; return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode)); } /* Set up the various global variables to indicate that we're processing the input file named FILENAME. */ static void set_input (filename) const char *filename; { const char *p; input_filename = filename; input_filename_length = strlen (input_filename); input_basename = input_filename; #ifdef HAVE_DOS_BASED_FILE_SYSTEM /* Skip drive name so 'x:foo' is handled properly. */ if (input_basename[1] == ':') input_basename += 2; #endif for (p = input_basename; *p; p++) if (IS_DIR_SEPARATOR (*p)) input_basename = p + 1; /* Find a suffix starting with the last period, and set basename_length to exclude that suffix. */ basename_length = strlen (input_basename); suffixed_basename_length = basename_length; p = input_basename + basename_length; while (p != input_basename && *p != '.') --p; if (*p == '.' && p != input_basename) { basename_length = p - input_basename; input_suffix = p + 1; } else input_suffix = ""; } /* On fatal signals, delete all the temporary files. */ static void fatal_error (signum) int signum; { signal (signum, SIG_DFL); delete_failure_queue (); delete_temp_files (); /* Get the same signal again, this time not handled, so its normal effect occurs. */ kill (getpid (), signum); } extern int main PARAMS ((int, const char *const *)); int main (argc, argv) int argc; const char *const *argv; { size_t i; int value; int linker_was_run = 0; char *explicit_link_files; char *specs_file; const char *p; struct user_specs *uptr; p = argv[0] + strlen (argv[0]); while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1])) --p; programname = p; xmalloc_set_program_name (programname); #ifdef GCC_DRIVER_HOST_INITIALIZATION /* Perform host dependent initialization when needed. */ GCC_DRIVER_HOST_INITIALIZATION; #endif gcc_init_libintl (); if (signal (SIGINT, SIG_IGN) != SIG_IGN) signal (SIGINT, fatal_error); #ifdef SIGHUP if (signal (SIGHUP, SIG_IGN) != SIG_IGN) signal (SIGHUP, fatal_error); #endif if (signal (SIGTERM, SIG_IGN) != SIG_IGN) signal (SIGTERM, fatal_error); #ifdef SIGPIPE if (signal (SIGPIPE, SIG_IGN) != SIG_IGN) signal (SIGPIPE, fatal_error); #endif #ifdef SIGCHLD /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will receive the signal. A different setting is inheritable */ signal (SIGCHLD, SIG_DFL); #endif argbuf_length = 10; argbuf = (const char **) xmalloc (argbuf_length * sizeof (const char *)); obstack_init (&obstack); /* Build multilib_select, et. al from the separate lines that make up each multilib selection. */ { const char *const *q = multilib_raw; int need_space; obstack_init (&multilib_obstack); while ((p = *q++) != (char *) 0) obstack_grow (&multilib_obstack, p, strlen (p)); obstack_1grow (&multilib_obstack, 0); multilib_select = obstack_finish (&multilib_obstack); q = multilib_matches_raw; while ((p = *q++) != (char *) 0) obstack_grow (&multilib_obstack, p, strlen (p)); obstack_1grow (&multilib_obstack, 0); multilib_matches = obstack_finish (&multilib_obstack); q = multilib_exclusions_raw; while ((p = *q++) != (char *) 0) obstack_grow (&multilib_obstack, p, strlen (p)); obstack_1grow (&multilib_obstack, 0); multilib_exclusions = obstack_finish (&multilib_obstack); need_space = FALSE; for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++) { if (need_space) obstack_1grow (&multilib_obstack, ' '); obstack_grow (&multilib_obstack, multilib_defaults_raw[i], strlen (multilib_defaults_raw[i])); need_space = TRUE; } obstack_1grow (&multilib_obstack, 0); multilib_defaults = obstack_finish (&multilib_obstack); } /* Set up to remember the pathname of gcc and any options needed for collect. We use argv[0] instead of programname because we need the complete pathname. */ obstack_init (&collect_obstack); obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1); obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1); putenv (obstack_finish (&collect_obstack)); #ifdef INIT_ENVIRONMENT /* Set up any other necessary machine specific environment variables. */ putenv (INIT_ENVIRONMENT); #endif /* Make a table of what switches there are (switches, n_switches). Make a table of specified input files (infiles, n_infiles). Decode switches that are handled locally. */ process_command (argc, argv); { int first_time; /* Build COLLECT_GCC_OPTIONS to have all of the options specified to the compiler. */ obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=", sizeof ("COLLECT_GCC_OPTIONS=") - 1); first_time = TRUE; for (i = 0; (int) i < n_switches; i++) { const char *const *args; const char *p, *q; if (!first_time) obstack_grow (&collect_obstack, " ", 1); first_time = FALSE; obstack_grow (&collect_obstack, "'-", 2); q = switches[i].part1; while ((p = strchr (q, '\''))) { obstack_grow (&collect_obstack, q, p - q); obstack_grow (&collect_obstack, "'\\''", 4); q = ++p; } obstack_grow (&collect_obstack, q, strlen (q)); obstack_grow (&collect_obstack, "'", 1); for (args = switches[i].args; args && *args; args++) { obstack_grow (&collect_obstack, " '", 2); q = *args; while ((p = strchr (q, '\''))) { obstack_grow (&collect_obstack, q, p - q); obstack_grow (&collect_obstack, "'\\''", 4); q = ++p; } obstack_grow (&collect_obstack, q, strlen (q)); obstack_grow (&collect_obstack, "'", 1); } } obstack_grow (&collect_obstack, "\0", 1); putenv (obstack_finish (&collect_obstack)); } /* Initialize the vector of specs to just the default. This means one element containing 0s, as a terminator. */ compilers = (struct compiler *) xmalloc (sizeof default_compilers); memcpy ((char *) compilers, (char *) default_compilers, sizeof default_compilers); n_compilers = n_default_compilers; /* Read specs from a file if there is one. */ machine_suffix = concat (spec_machine, dir_separator_str, spec_version, dir_separator_str, NULL); just_machine_suffix = concat (spec_machine, dir_separator_str, NULL); specs_file = find_a_file (&startfile_prefixes, "specs", R_OK); /* Read the specs file unless it is a default one. */ if (specs_file != 0 && strcmp (specs_file, "specs")) read_specs (specs_file, TRUE); else init_spec (); /* We need to check standard_exec_prefix/just_machine_suffix/specs for any override of as, ld and libraries. */ specs_file = (char *) alloca (strlen (standard_exec_prefix) + strlen (just_machine_suffix) + sizeof ("specs")); strcpy (specs_file, standard_exec_prefix); strcat (specs_file, just_machine_suffix); strcat (specs_file, "specs"); if (access (specs_file, R_OK) == 0) read_specs (specs_file, TRUE); /* If not cross-compiling, look for startfiles in the standard places. */ if (*cross_compile == '0') { if (*md_exec_prefix) { add_prefix (&exec_prefixes, md_exec_prefix, "GCC", PREFIX_PRIORITY_LAST, 0, NULL); add_prefix (&startfile_prefixes, md_exec_prefix, "GCC", PREFIX_PRIORITY_LAST, 0, NULL); } if (*md_startfile_prefix) add_prefix (&startfile_prefixes, md_startfile_prefix, "GCC", PREFIX_PRIORITY_LAST, 0, NULL); if (*md_startfile_prefix_1) add_prefix (&startfile_prefixes, md_startfile_prefix_1, "GCC", PREFIX_PRIORITY_LAST, 0, NULL); /* If standard_startfile_prefix is relative, base it on standard_exec_prefix. This lets us move the installed tree as a unit. If GCC_EXEC_PREFIX is defined, base standard_startfile_prefix on that as well. */ if (IS_ABSOLUTE_PATHNAME (standard_startfile_prefix)) add_prefix (&startfile_prefixes, standard_startfile_prefix, "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); else { if (gcc_exec_prefix) add_prefix (&startfile_prefixes, concat (gcc_exec_prefix, machine_suffix, standard_startfile_prefix, NULL), NULL, PREFIX_PRIORITY_LAST, 0, NULL); add_prefix (&startfile_prefixes, concat (standard_exec_prefix, machine_suffix, standard_startfile_prefix, NULL), NULL, PREFIX_PRIORITY_LAST, 0, NULL); } add_prefix (&startfile_prefixes, standard_startfile_prefix_1, "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); add_prefix (&startfile_prefixes, standard_startfile_prefix_2, "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); #if 0 /* Can cause surprises, and one can use -B./ instead. */ add_prefix (&startfile_prefixes, "./", NULL, PREFIX_PRIORITY_LAST, 1, NULL); #endif } else { if (!IS_ABSOLUTE_PATHNAME (standard_startfile_prefix) && gcc_exec_prefix) add_prefix (&startfile_prefixes, concat (gcc_exec_prefix, machine_suffix, standard_startfile_prefix, NULL), "BINUTILS", PREFIX_PRIORITY_LAST, 0, NULL); } /* Process any user specified specs in the order given on the command line. */ for (uptr = user_specs_head; uptr; uptr = uptr->next) { char *filename = find_a_file (&startfile_prefixes, uptr->filename, R_OK); read_specs (filename ? filename : uptr->filename, FALSE); } /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */ if (gcc_exec_prefix) gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str, spec_version, dir_separator_str, NULL); /* Now we have the specs. Set the `valid' bits for switches that match anything in any spec. */ validate_all_switches (); /* Now that we have the switches and the specs, set the subdirectory based on the options. */ set_multilib_dir (); /* Warn about any switches that no pass was interested in. */ for (i = 0; (int) i < n_switches; i++) if (! switches[i].validated) error ("unrecognized option `-%s'", switches[i].part1); /* Obey some of the options. */ if (print_search_dirs) { printf (_("install: %s%s\n"), standard_exec_prefix, machine_suffix); printf (_("programs: %s\n"), build_search_list (&exec_prefixes, "", 0)); printf (_("libraries: %s\n"), build_search_list (&startfile_prefixes, "", 0)); return (0); } if (print_file_name) { printf ("%s\n", find_file (print_file_name)); return (0); } if (print_prog_name) { char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK); printf ("%s\n", (newname ? newname : print_prog_name)); return (0); } if (print_multi_lib) { print_multilib_info (); return (0); } if (print_multi_directory) { if (multilib_dir == NULL) printf (".\n"); else printf ("%s\n", multilib_dir); return (0); } if (target_help_flag) { /* Print if any target specific options.*/ /* We do not exit here. Instead we have created a fake input file called 'target-dummy' which needs to be compiled, and we pass this on to the various sub-processes, along with the --target-help switch. */ } if (print_help_list) { display_help (); if (! verbose_flag) { printf (_("\nFor bug reporting instructions, please see:\n")); printf ("%s.\n", GCCBUGURL); return (0); } /* We do not exit here. Instead we have created a fake input file called 'help-dummy' which needs to be compiled, and we pass this on the various sub-processes, along with the --help switch. */ } if (verbose_flag) { int n; const char *thrmod; notice ("Configured with: %s\n", configuration_arguments); #ifdef THREAD_MODEL_SPEC /* We could have defined THREAD_MODEL_SPEC to "%*" by default, but there's no point in doing all this processing just to get thread_model back. */ obstack_init (&obstack); do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model); obstack_1grow (&obstack, '\0'); thrmod = obstack_finish (&obstack); #else thrmod = thread_model; #endif notice ("Thread model: %s\n", thrmod); /* compiler_version is truncated at the first space when initialized from version string, so truncate version_string at the first space before comparing. */ for (n = 0; version_string[n]; n++) if (version_string[n] == ' ') break; if (! strncmp (version_string, compiler_version, n) && compiler_version[n] == 0) notice ("gcc version %s\n", version_string); else notice ("gcc driver version %s executing gcc version %s\n", version_string, compiler_version); if (n_infiles == 0) return (0); } if (n_infiles == added_libraries) fatal ("No input files"); /* Make a place to record the compiler output file names that correspond to the input files. */ i = n_infiles; i += lang_specific_extra_outfiles; outfiles = (const char **) xcalloc (i, sizeof (char *)); /* Record which files were specified explicitly as link input. */ explicit_link_files = xcalloc (1, n_infiles); for (i = 0; (int) i < n_infiles; i++) { int this_file_error = 0; /* Tell do_spec what to substitute for %i. */ input_file_number = i; set_input (infiles[i].name); /* Use the same thing in %o, unless cp->spec says otherwise. */ outfiles[i] = input_filename; /* Figure out which compiler from the file's suffix. */ input_file_compiler = lookup_compiler (infiles[i].name, input_filename_length, infiles[i].language); if (input_file_compiler) { /* Ok, we found an applicable compiler. Run its spec. */ if (input_file_compiler->spec[0] == '#') { error ("%s: %s compiler not installed on this system", input_filename, &input_file_compiler->spec[1]); this_file_error = 1; } else { value = do_spec (input_file_compiler->spec); if (value < 0) this_file_error = 1; } } /* If this file's name does not contain a recognized suffix, record it as explicit linker input. */ else explicit_link_files[i] = 1; /* Clear the delete-on-failure queue, deleting the files in it if this compilation failed. */ if (this_file_error) { delete_failure_queue (); error_count++; } /* If this compilation succeeded, don't delete those files later. */ clear_failure_queue (); } /* Reset the output file name to the first input file name, for use with %b in LINK_SPEC on a target that prefers not to emit a.out by default. */ if (n_infiles > 0) set_input (infiles[0].name); if (error_count == 0) { /* Make sure INPUT_FILE_NUMBER points to first available open slot. */ input_file_number = n_infiles; if (lang_specific_pre_link ()) error_count++; } /* Run ld to link all the compiler output files. */ if (error_count == 0) { int tmp = execution_count; /* We'll use ld if we can't find collect2. */ if (! strcmp (linker_name_spec, "collect2")) { char *s = find_a_file (&exec_prefixes, "collect2", X_OK); if (s == NULL) linker_name_spec = "ld"; } /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables for collect. */ putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH"); putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV); value = do_spec (link_command_spec); if (value < 0) error_count = 1; linker_was_run = (tmp != execution_count); } /* If options said don't run linker, complain about input files to be given to the linker. */ if (! linker_was_run && error_count == 0) for (i = 0; (int) i < n_infiles; i++) if (explicit_link_files[i]) error ("%s: linker input file unused because linking not done", outfiles[i]); /* Delete some or all of the temporary files we made. */ if (error_count) delete_failure_queue (); delete_temp_files (); if (print_help_list) { printf (("\nFor bug reporting instructions, please see:\n")); printf ("%s\n", GCCBUGURL); } return (signal_count != 0 ? 2 : error_count > 0 ? (pass_exit_codes ? greatest_status : 1) : 0); } /* Find the proper compilation spec for the file name NAME, whose length is LENGTH. LANGUAGE is the specified language, or 0 if this file is to be passed to the linker. */ static struct compiler * lookup_compiler (name, length, language) const char *name; size_t length; const char *language; { struct compiler *cp; /* If this was specified by the user to be a linker input, indicate that. */ if (language != 0 && language[0] == '*') return 0; /* Otherwise, look for the language, if one is spec'd. */ if (language != 0) { for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language)) return cp; error ("language %s not recognized", language); return 0; } /* Look for a suffix. */ for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) { if (/* The suffix `-' matches only the file name `-'. */ (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) || (strlen (cp->suffix) < length /* See if the suffix matches the end of NAME. */ && !strcmp (cp->suffix, name + length - strlen (cp->suffix)) )) break; } #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM) /* look again, but case-insensitively this time. */ if (cp < compilers) for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) { if (/* The suffix `-' matches only the file name `-'. */ (!strcmp (cp->suffix, "-") && !strcmp (name, "-")) || (strlen (cp->suffix) < length /* See if the suffix matches the end of NAME. */ && ((!strcmp (cp->suffix, name + length - strlen (cp->suffix)) || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ")) && !strcasecmp (cp->suffix, name + length - strlen (cp->suffix))) )) break; } #endif if (cp >= compilers) { if (cp->spec[0] != '@') /* A non-alias entry: return it. */ return cp; /* An alias entry maps a suffix to a language. Search for the language; pass 0 for NAME and LENGTH to avoid infinite recursion if language not found. */ return lookup_compiler (NULL, 0, cp->spec + 1); } return 0; } static char * save_string (s, len) const char *s; int len; { char *result = xmalloc (len + 1); memcpy (result, s, len); result[len] = 0; return result; } void pfatal_with_name (name) const char *name; { perror_with_name (name); delete_temp_files (); exit (1); } static void perror_with_name (name) const char *name; { error ("%s: %s", name, xstrerror (errno)); } static void pfatal_pexecute (errmsg_fmt, errmsg_arg) const char *errmsg_fmt; const char *errmsg_arg; { if (errmsg_arg) { int save_errno = errno; /* Space for trailing '\0' is in %s. */ char *msg = xmalloc (strlen (errmsg_fmt) + strlen (errmsg_arg)); sprintf (msg, errmsg_fmt, errmsg_arg); errmsg_fmt = msg; errno = save_errno; } pfatal_with_name (errmsg_fmt); } /* Output an error message and exit */ void fancy_abort () { fatal ("Internal gcc abort."); } /* Output an error message and exit */ void fatal VPARAMS ((const char *msgid, ...)) { VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, msgid); fprintf (stderr, "%s: ", programname); vfprintf (stderr, _(msgid), ap); VA_CLOSE (ap); fprintf (stderr, "\n"); delete_temp_files (); exit (1); } void error VPARAMS ((const char *msgid, ...)) { VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, msgid); fprintf (stderr, "%s: ", programname); vfprintf (stderr, _(msgid), ap); VA_CLOSE (ap); fprintf (stderr, "\n"); } static void notice VPARAMS ((const char *msgid, ...)) { VA_OPEN (ap, msgid); VA_FIXEDARG (ap, const char *, msgid); vfprintf (stderr, _(msgid), ap); VA_CLOSE (ap); } static void validate_all_switches () { struct compiler *comp; const char *p; char c; struct spec_list *spec; for (comp = compilers; comp->spec; comp++) { p = comp->spec; while ((c = *p++)) if (c == '%' && *p == '{') /* We have a switch spec. */ validate_switches (p + 1); } /* Look through the linked list of specs read from the specs file. */ for (spec = specs; spec; spec = spec->next) { p = *(spec->ptr_spec); while ((c = *p++)) if (c == '%' && *p == '{') /* We have a switch spec. */ validate_switches (p + 1); } p = link_command_spec; while ((c = *p++)) if (c == '%' && *p == '{') /* We have a switch spec. */ validate_switches (p + 1); } /* Look at the switch-name that comes after START and mark as valid all supplied switches that match it. */ static void validate_switches (start) const char *start; { const char *p = start; const char *filter; int i; int suffix; if (*p == '|') ++p; next_member: if (*p == '!') ++p; suffix = 0; if (*p == '.') suffix = 1, ++p; filter = p; while (*p != ':' && *p != '}' && *p != '|' && *p != '&') p++; if (suffix) ; else if (p[-1] == '*') { /* Mark all matching switches as valid. */ for (i = 0; i < n_switches; i++) if (!strncmp (switches[i].part1, filter, p - filter - 1)) switches[i].validated = 1; } else { /* Mark an exact matching switch as valid. */ for (i = 0; i < n_switches; i++) { if (!strncmp (switches[i].part1, filter, p - filter) && switches[i].part1[p - filter] == 0) switches[i].validated = 1; } } if (*p++ == '|' || p[-1] == '&') goto next_member; } /* Check whether a particular argument was used. The first time we canonicalize the switches to keep only the ones we care about. */ static int used_arg (p, len) const char *p; int len; { struct mswitchstr { const char *str; const char *replace; int len; int rep_len; }; static struct mswitchstr *mswitches; static int n_mswitches; int i, j; if (!mswitches) { struct mswitchstr *matches; const char *q; int cnt = 0; /* Break multilib_matches into the component strings of string and replacement string. */ for (q = multilib_matches; *q != '\0'; q++) if (*q == ';') cnt++; matches = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt); i = 0; q = multilib_matches; while (*q != '\0') { matches[i].str = q; while (*q != ' ') { if (*q == '\0') abort (); q++; } matches[i].len = q - matches[i].str; matches[i].replace = ++q; while (*q != ';' && *q != '\0') { if (*q == ' ') abort (); q++; } matches[i].rep_len = q - matches[i].replace; i++; if (*q == ';') q++; } /* Now build a list of the replacement string for switches that we care about. Make sure we allocate at least one entry. This prevents xmalloc from calling fatal, and prevents us from re-executing this block of code. */ mswitches = (struct mswitchstr *) xmalloc ((sizeof (struct mswitchstr)) * (n_switches ? n_switches : 1)); for (i = 0; i < n_switches; i++) { int xlen = strlen (switches[i].part1); for (j = 0; j < cnt; j++) if (xlen == matches[j].len && ! strncmp (switches[i].part1, matches[j].str, xlen)) { mswitches[n_mswitches].str = matches[j].replace; mswitches[n_mswitches].len = matches[j].rep_len; mswitches[n_mswitches].replace = (char *) 0; mswitches[n_mswitches].rep_len = 0; n_mswitches++; break; } } } for (i = 0; i < n_mswitches; i++) if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len)) return 1; return 0; } static int default_arg (p, len) const char *p; int len; { const char *start, *end; for (start = multilib_defaults; *start != '\0'; start = end + 1) { while (*start == ' ' || *start == '\t') start++; if (*start == '\0') break; for (end = start + 1; *end != ' ' && *end != '\t' && *end != '\0'; end++) ; if ((end - start) == len && strncmp (p, start, len) == 0) return 1; if (*end == '\0') break; } return 0; } /* Work out the subdirectory to use based on the options. The format of multilib_select is a list of elements. Each element is a subdirectory name followed by a list of options followed by a semicolon. The format of multilib_exclusions is the same, but without the preceding directory. First gcc will check the exclusions, if none of the options beginning with an exclamation point are present, and all of the other options are present, then we will ignore this completely. Passing that, gcc will consider each multilib_select in turn using the same rules for matching the options. If a match is found, that subdirectory will be used. */ static void set_multilib_dir () { const char *p; unsigned int this_path_len; const char *this_path, *this_arg; int not_arg; int ok; p = multilib_exclusions; while (*p != '\0') { /* Ignore newlines. */ if (*p == '\n') { ++p; continue; } /* Check the arguments. */ ok = 1; while (*p != ';') { if (*p == '\0') abort (); if (! ok) { ++p; continue; } this_arg = p; while (*p != ' ' && *p != ';') { if (*p == '\0') abort (); ++p; } if (*this_arg != '!') not_arg = 0; else { not_arg = 1; ++this_arg; } ok = used_arg (this_arg, p - this_arg); if (not_arg) ok = ! ok; if (*p == ' ') ++p; } if (ok) return; ++p; } p = multilib_select; while (*p != '\0') { /* Ignore newlines. */ if (*p == '\n') { ++p; continue; } /* Get the initial path. */ this_path = p; while (*p != ' ') { if (*p == '\0') abort (); ++p; } this_path_len = p - this_path; /* Check the arguments. */ ok = 1; ++p; while (*p != ';') { if (*p == '\0') abort (); if (! ok) { ++p; continue; } this_arg = p; while (*p != ' ' && *p != ';') { if (*p == '\0') abort (); ++p; } if (*this_arg != '!') not_arg = 0; else { not_arg = 1; ++this_arg; } /* If this is a default argument, we can just ignore it. This is true even if this_arg begins with '!'. Beginning with '!' does not mean that this argument is necessarily inappropriate for this library: it merely means that there is a more specific library which uses this argument. If this argument is a default, we need not consider that more specific library. */ if (! default_arg (this_arg, p - this_arg)) { ok = used_arg (this_arg, p - this_arg); if (not_arg) ok = ! ok; } if (*p == ' ') ++p; } if (ok) { if (this_path_len != 1 || this_path[0] != '.') { char *new_multilib_dir = xmalloc (this_path_len + 1); strncpy (new_multilib_dir, this_path, this_path_len); new_multilib_dir[this_path_len] = '\0'; multilib_dir = new_multilib_dir; } break; } ++p; } } /* Print out the multiple library subdirectory selection information. This prints out a series of lines. Each line looks like SUBDIRECTORY;@OPTION@OPTION, with as many options as is required. Only the desired options are printed out, the negative matches. The options are print without a leading dash. There are no spaces to make it easy to use the information in the shell. Each subdirectory is printed only once. This assumes the ordering generated by the genmultilib script. Also, we leave out ones that match the exclusions. */ static void print_multilib_info () { const char *p = multilib_select; const char *last_path = 0, *this_path; int skip; unsigned int last_path_len = 0; while (*p != '\0') { skip = 0; /* Ignore newlines. */ if (*p == '\n') { ++p; continue; } /* Get the initial path. */ this_path = p; while (*p != ' ') { if (*p == '\0') abort (); ++p; } /* Check for matches with the multilib_exclusions. We don't bother with the '!' in either list. If any of the exclusion rules match all of its options with the select rule, we skip it. */ { const char *e = multilib_exclusions; const char *this_arg; while (*e != '\0') { int m = 1; /* Ignore newlines. */ if (*e == '\n') { ++e; continue; } /* Check the arguments. */ while (*e != ';') { const char *q; int mp = 0; if (*e == '\0') abort (); if (! m) { ++e; continue; } this_arg = e; while (*e != ' ' && *e != ';') { if (*e == '\0') abort (); ++e; } q = p + 1; while (*q != ';') { const char *arg; int len = e - this_arg; if (*q == '\0') abort (); arg = q; while (*q != ' ' && *q != ';') { if (*q == '\0') abort (); ++q; } if (! strncmp (arg, this_arg, (len < q - arg) ? q - arg : len) || default_arg (this_arg, e - this_arg)) { mp = 1; break; } if (*q == ' ') ++q; } if (! mp) m = 0; if (*e == ' ') ++e; } if (m) { skip = 1; break; } if (*e != '\0') ++e; } } if (! skip) { /* If this is a duplicate, skip it. */ skip = (last_path != 0 && (unsigned int) (p - this_path) == last_path_len && ! strncmp (last_path, this_path, last_path_len)); last_path = this_path; last_path_len = p - this_path; } /* If this directory requires any default arguments, we can skip it. We will already have printed a directory identical to this one which does not require that default argument. */ if (! skip) { const char *q; q = p + 1; while (*q != ';') { const char *arg; if (*q == '\0') abort (); if (*q == '!') arg = NULL; else arg = q; while (*q != ' ' && *q != ';') { if (*q == '\0') abort (); ++q; } if (arg != NULL && default_arg (arg, q - arg)) { skip = 1; break; } if (*q == ' ') ++q; } } if (! skip) { const char *p1; for (p1 = last_path; p1 < p; p1++) putchar (*p1); putchar (';'); } ++p; while (*p != ';') { int use_arg; if (*p == '\0') abort (); if (skip) { ++p; continue; } use_arg = *p != '!'; if (use_arg) putchar ('@'); while (*p != ' ' && *p != ';') { if (*p == '\0') abort (); if (use_arg) putchar (*p); ++p; } if (*p == ' ') ++p; } if (! skip) { /* If there are extra options, print them now. */ if (multilib_extra && *multilib_extra) { int print_at = TRUE; const char *q; for (q = multilib_extra; *q != '\0'; q++) { if (*q == ' ') print_at = TRUE; else { if (print_at) putchar ('@'); putchar (*q); print_at = FALSE; } } } putchar ('\n'); } ++p; } }