From ed1f651bedab77b128987c0436b5bacd00bc0f0d Mon Sep 17 00:00:00 2001 From: Richard Stallman Date: Sat, 1 Feb 1992 05:15:32 +0000 Subject: [PATCH] Initial revision From-SVN: r262 --- gcc/gcc.c | 3316 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 3316 insertions(+) create mode 100644 gcc/gcc.c diff --git a/gcc/gcc.c b/gcc/gcc.c new file mode 100644 index 00000000000..d6fb482110d --- /dev/null +++ b/gcc/gcc.c @@ -0,0 +1,3316 @@ +/* Compiler driver program that can handle many languages. + Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc. + +This file is part of GNU CC. + +GNU CC 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. + +GNU CC 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 GNU CC; see the file COPYING. If not, write to +the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, 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". */ + +#include +#include +#include +#include +#include +#include + +#include "config.h" +#include "obstack.h" +#include "gvarargs.h" + +#ifdef USG +#ifndef R_OK +#define R_OK 4 +#define W_OK 2 +#define X_OK 1 +#endif + +#define vfork fork +#endif /* USG */ + +/* On MSDOS, write temp files in current dir + because there's no place else we can expect to use. */ +#if __MSDOS__ +#ifndef P_tmpdir +#define P_tmpdir "./" +#endif +#endif + +/* Test if something is a normal file. */ +#ifndef S_ISREG +#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) +#endif + +/* Test if something is a directory. */ +#ifndef S_ISDIR +#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) +#endif + +/* By default there is no special suffix for executables. */ +#ifndef EXECUTABLE_SUFFIX +#if __MSDOS__ +#define EXECUTABLE_SUFFIX ".exe" +#else +#define EXECUTABLE_SUFFIX "" +#endif +#endif + +#define obstack_chunk_alloc xmalloc +#define obstack_chunk_free free + +extern void free (); +extern char *getenv (); + +extern int errno, sys_nerr; +extern char *sys_errlist[]; + +extern int execv (), execvp (); + +/* If a stage of compilation returns an exit status >= 1, + compilation of that file ceases. */ + +#define MIN_FATAL_STATUS 1 + +/* Flag indicating whether we should print the command and arguments */ + +static int verbose_flag; + +/* 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 specified with -V */ + +static char *spec_version; + +/* The target machine specified with -b. */ + +static char *spec_machine = DEFAULT_TARGET_MACHINE; + +/* This is the obstack which we use to allocate many strings. */ + +static struct obstack obstack; + +extern char *version_string; + +static void set_spec (); +static struct compiler *lookup_compiler (); +static char *find_a_file (); +static void add_prefix (); +static char *skip_whitespace (); +static void record_temp_file (); +static char *handle_braces (); +static char *save_string (); +static char *concat (); +static int do_spec (); +static int do_spec_1 (); +static char *find_file (); +static int is_linker_dir (); +static void validate_switches (); +static void validate_all_switches (); +static void give_switch (); +static void pfatal_with_name (); +static void perror_with_name (); +static void perror_exec (); +static void fatal (); +static void error (); +void fancy_abort (); +char *xmalloc (); +char *xrealloc (); + +/* 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. + %g substitute the temporary-file-name-base. This is a string chosen + once per compilation. Different temporary file names are made by + concatenation of constant strings on the end, as in `%g.s'. + %g also has the same effect of %d. + %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. + %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. + %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. + %x{OPTION} Accumulate an option for %X. + %X Output the accumulated linker options specified by compilations. + %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 it's job. + %D Dump out a -L option for each directory in library_prefix, + followed by a -L option for each directory in startfile_prefix. + %l process LINK_SPEC as a spec. + %L process LIB_SPEC as a spec. + %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. A capital C is actually used here. + %1 process CC1_SPEC as a spec. + %2 process CC1PLUS_SPEC as a spec. + %* 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, -D, -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*:X} substitutes X if one or more switches whose names 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 + occurance of %* within X. + %{S:X} substitutes X, but only if the -S switch was given to CC. + %{!S:X} substitutes X, but only if the -S switch was NOT given to CC. + %{|S:X} like %{S:X}, but if no S switch, substitute `-'. + %{|!S:X} like %{!S:X}, but if there is an S switch, substitute `-'. + %{.S:X} substitutes X, but only if processing a file with suffix S. + %{!.S:X} substitutes X, but only if NOT processing a file with suffix S. + +The conditional text X in a %{S:X} or %{!S:X} construct may contain +other nested % constructs or spaces, or even newlines. They are +processed as usual, as described above. + +The character | is used to indicate that a command should be piped to +the following command, but only if -pipe is specified. + +Note that it is built into CC which switches take arguments and which +do not. You might think it would be useful to generalize this to +allow each compiler's spec to say which switches take arguments. But +this cannot be done in a consistent fashion. CC cannot even decide +which input files have been specified without knowing which switches +take arguments, and it must know which input files to compile in order +to tell which compilers to run. + +CC also knows implicitly that arguments starting in `-l' are to be +treated as compiler output files, and passed to the linker in their +proper position among the other output files. */ + +/* Define the macros used for specs %a, %l, %L, %S, %c, %C, %1. */ + +/* config.h can define ASM_SPEC to provide extra args to the assembler + or extra switch-translations. */ +#ifndef ASM_SPEC +#define ASM_SPEC "" +#endif + +/* config.h can define ASM_FINAL_SPEC to run a post processor after + the assembler has run. */ +#ifndef ASM_FINAL_SPEC +#define ASM_FINAL_SPEC "" +#endif + +/* config.h can define CPP_SPEC to provide extra args to the C preprocessor + or extra switch-translations. */ +#ifndef CPP_SPEC +#define CPP_SPEC "" +#endif + +/* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus + or extra switch-translations. */ +#ifndef CC1_SPEC +#define CC1_SPEC "" +#endif + +/* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus + or extra switch-translations. */ +#ifndef CC1PLUS_SPEC +#define CC1PLUS_SPEC "" +#endif + +/* config.h can define LINK_SPEC to provide extra args to the linker + or extra switch-translations. */ +#ifndef LINK_SPEC +#define LINK_SPEC "" +#endif + +/* config.h can define LIB_SPEC to override the default libraries. */ +#ifndef LIB_SPEC +#define LIB_SPEC "%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}" +#endif + +/* config.h can define STARTFILE_SPEC to override the default crt0 files. */ +#ifndef STARTFILE_SPEC +#define STARTFILE_SPEC \ + "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt0.o%s}}" +#endif + +/* config.h can define SWITCHES_NEED_SPACES to control passing -o and -L. + Make the string nonempty to require spaces there. */ +#ifndef SWITCHES_NEED_SPACES +#define SWITCHES_NEED_SPACES "" +#endif + +/* config.h can define ENDFILE_SPEC to override the default crtn files. */ +#ifndef ENDFILE_SPEC +#define ENDFILE_SPEC "" +#endif + +/* This spec is used for telling cpp whether char is signed or not. */ +#ifndef SIGNED_CHAR_SPEC +#define SIGNED_CHAR_SPEC \ + (DEFAULT_SIGNED_CHAR ? "%{funsigned-char:-D__CHAR_UNSIGNED__}" \ + : "%{!fsigned-char:-D__CHAR_UNSIGNED__}") +#endif + +static char *cpp_spec = CPP_SPEC; +static char *cpp_predefines = CPP_PREDEFINES; +static char *cc1_spec = CC1_SPEC; +static char *cc1plus_spec = CC1PLUS_SPEC; +static char *signed_char_spec = SIGNED_CHAR_SPEC; +static char *asm_spec = ASM_SPEC; +static char *asm_final_spec = ASM_FINAL_SPEC; +static char *link_spec = LINK_SPEC; +static char *lib_spec = LIB_SPEC; +static char *endfile_spec = ENDFILE_SPEC; +static char *startfile_spec = STARTFILE_SPEC; +static char *switches_need_spaces = SWITCHES_NEED_SPACES; + +/* This defines which switch letters take arguments. */ + +#ifndef SWITCH_TAKES_ARG +#define SWITCH_TAKES_ARG(CHAR) \ + ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \ + || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \ + || (CHAR) == 'I' || (CHAR) == 'm' \ + || (CHAR) == 'L' || (CHAR) == 'A') +#endif + +/* This defines which multi-letter switches take arguments. */ + +#ifndef WORD_SWITCH_TAKES_ARG +#define WORD_SWITCH_TAKES_ARG(STR) \ + (!strcmp (STR, "Tdata") || !strcmp (STR, "include") \ + || !strcmp (STR, "imacros")) +#endif + +/* Record the mapping from file suffixes for compilation specs. */ + +struct compiler +{ + char *suffix; /* Use this compiler for input files + whose names end in this suffix. */ + char *spec; /* To use this compiler, pass this spec + to do_spec. */ +}; + +/* Pointer to a vector of `struct compiler' that gives the spec for + compiling a file, based on its suffix. + A file that does not end in any of these suffixes will be passed + unchanged to the loader and nothing else will be done to it. + + An entry containing two 0s is used to terminate the vector. + + If multiple entries match a file, the last matching one is used. */ + +static struct compiler *compilers; + +/* Number of entries in `compilers', not counting the null terminator. */ + +static int n_compilers; + +/* The default list of file name suffixes and their compilation specs. */ + +static struct compiler default_compilers[] = +{ + {".c", "@c"}, + {"@c", + "cpp -lang-c %{nostdinc} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P}\ + %{C:%{!E:%eGNU C does not support -C without using -E}}\ + %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\ + -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\ + %{!undef:%{!ansi:%p} %P} %{trigraphs}\ + %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\ + %{traditional-cpp:-traditional}\ + %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\ + %i %{!M:%{!MM:%{!E:%{!pipe:%g.cpp}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n\ + %{!M:%{!MM:%{!E:cc1 %{!pipe:%g.cpp} %1 \ + %{!Q:-quiet} -dumpbase %b.c %{d*} %{m*} %{a}\ + %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \ + %{traditional} %{v:-version} %{pg:-p} %{p} %{f*}\ + %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ + %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\ + %{!S:as %{R} %{j} %{J} %{h} %{d2} %a \ + %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o}\ + %{!pipe:%g.s} %A\n }}}}"}, + {"-", + "%{E:cpp -lang-c %{nostdinc} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P}\ + %{C:%{!E:%eGNU C does not support -C without using -E}}\ + %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\ + -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\ + %{!undef:%{!ansi:%p} %P} %{trigraphs}\ + %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\ + %{traditional-cpp:-traditional}\ + %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\ + %i %W{o*}}\ + %{!E:%e-E required when input is from standard input}"}, + {".m", "@objective-c"}, + {"@objective-c", + "cpp -lang-objc %{nostdinc} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P}\ + %{C:%{!E:%eGNU C does not support -C without using -E}}\ + %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d}\ + -undef -D__OBJC__ -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\ + %{!undef:%{!ansi:%p} %P} %{trigraphs}\ + %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\ + %{traditional-cpp:-traditional}\ + %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\ + %i %{!M:%{!MM:%{!E:%{!pipe:%g.cpp}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n\ + %{!M:%{!MM:%{!E:cc1obj %{!pipe:%g.cpp} %1 \ + %{!Q:-quiet} -dumpbase %b.m %{d*} %{m*} %{a}\ + %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} \ + %{traditional} %{v:-version} %{pg:-p} %{p} %{f*} \ + -lang-objc %{gen-decls} \ + %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ + %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\ + %{!S:as %{R} %{j} %{J} %{h} %{d2} %a \ + %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o}\ + %{!pipe:%g.s} %A\n }}}}"}, + {".h", "@c-header"}, + {"@c-header", + "%{!E:%eCompilation of header file requested} \ + cpp %{nostdinc} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P}\ + %{C:%{!E:%eGNU C does not support -C without using -E}}\ + %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \ + -undef -D__GNUC__=2 %{ansi:-trigraphs -$ -D__STRICT_ANSI__}\ + %{!undef:%{!ansi:%p} %P} %{trigraphs}\ + %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\ + %{traditional-cpp:-traditional}\ + %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\ + %i %W{o*}"}, + {".cc", "@c++"}, + {".cxx", "@c++"}, + {".C", "@c++"}, + {"@c++", + "cpp -lang-c++ %{nostdinc} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P}\ + %{C:%{!E:%eGNU C++ does not support -C without using -E}}\ + %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} \ + -undef -D__GNUC__=2 -D__GNUG__=2 -D__cplusplus \ + %{ansi:-trigraphs -$ -D__STRICT_ANSI__} %{!undef:%{!ansi:%p} %P}\ + %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\ + %{traditional-cpp:-traditional} %{trigraphs}\ + %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\ + %i %{!M:%{!MM:%{!E:%{!pipe:%g.cpp}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n\ + %{!M:%{!MM:%{!E:cc1plus %{!pipe:%g.cpp} %1 %2\ + %{!Q:-quiet} -dumpbase %b.cc %{d*} %{m*} %{a}\ + %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\ + %{v:-version} %{pg:-p} %{p} %{f*}\ + %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ + %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\ + %{!S:as %{R} %{j} %{J} %{h} %{d2} %a \ + %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o}\ + %{!pipe:%g.s} %A\n }}}}"}, + {".i", "@cpp-output"}, + {"@cpp-output", + "cc1 %i %1 %{!Q:-quiet} %{d*} %{m*} %{a}\ + %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\ + %{v:-version} %{pg:-p} %{p} %{f*}\ + %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ + %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\ + %{!S:as %{R} %{j} %{J} %{h} %{d2} %a \ + %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o} %{!pipe:%g.s} %A\n }"}, + {".ii", "@c++-cpp-output"}, + {"@c++-cpp-output", + "cc1plus %i %1 %2 %{!Q:-quiet} %{d*} %{m*} %{a}\ + %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\ + %{v:-version} %{pg:-p} %{p} %{f*}\ + %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\ + %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\ + %{!S:as %{R} %{j} %{J} %{h} %{d2} %a \ + %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o}\ + %{!pipe:%g.s} %A\n }}}}"}, + {".s", "@assembler"}, + {"@assembler", + "%{!S:as %{R} %{j} %{J} %{h} %{d2} %a \ + %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o} %i %A\n }"}, + {".S", "@assembler-with-cpp"}, + {"@assembler-with-cpp", + "cpp -lang-asm %{nostdinc} %{C} %{v} %{A*} %{D*} %{U*} %{I*} %{i*} %{P}\ + %{C:%{!E:%eGNU C does not support -C without using -E}}\ + %{M} %{MM} %{MD:-MD %b.d} %{MMD:-MMD %b.d} %{trigraphs} \ + -undef -$ %{!undef:%p %P} -D__ASSEMBLER__ \ + %c %{O*:-D__OPTIMIZE__} %{traditional} %{ftraditional:-traditional}\ + %{traditional-cpp:-traditional}\ + %{g*} %{W*} %{w} %{pedantic*} %{H} %{d*} %C\ + %i %{!M:%{!MM:%{!E:%{!pipe:%g.s}}}}%{E:%W{o*}}%{M:%W{o*}}%{MM:%W{o*}} |\n\ + %{!M:%{!MM:%{!E:%{!S:as %{R} %{j} %{J} %{h} %{d2} %a \ + %{c:%W{o*}%{!o*:-o %w%b.o}}%{!c:-o %d%w%b.o}\ + %{!pipe:%g.s} %A\n }}}}"}, + /* Mark end of table */ + {0, 0} +}; + +/* Number of elements in default_compilers, not counting the terminator. */ + +static int n_default_compilers + = (sizeof default_compilers / sizeof (struct compiler)) - 1; + +/* Here is the spec for running the linker, after compiling all files. */ + +static char *link_command_spec = "\ +%{!c:%{!M:%{!MM:%{!E:%{!S:ld %X %l %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} \ + %{r} %{T*} %{t} %{x} %{z}\ + %{!A:%{!nostdlib:%S}} \ + %{L*} %D %o %{!nostdlib:libgcc.a%s %L libgcc.a%s %{!A:%E}}\n }}}}}"; + +/* A vector of options to give to the linker. + These options are accumlated by %x + and substituted into the linker command with %X. */ +static int n_linker_options; +static char **linker_options; + +/* 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) + char *filename; +{ + int desc; + struct stat statbuf; + char *buffer; + register char *p; + + if (verbose_flag) + fprintf (stderr, "Reading specs from %s\n", filename); + + /* Open and stat the file. */ + desc = open (filename, 0, 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 (statbuf.st_size + 1); + read (desc, buffer, statbuf.st_size); + buffer[statbuf.st_size] = 0; + close (desc); + + /* Scan BUFFER for specs, putting them in the vector. */ + p = buffer; + while (1) + { + char *suffix; + char *spec; + char *in, *out, *p1, *p2; + + /* Advance P in BUFFER to the next nonblank nocomment line. */ + p = skip_whitespace (p); + if (*p == 0) + break; + + /* 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 %d characters", 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 %d characters", p - buffer); + p1 = p; + /* Find next blank line. */ + while (*p1 && !(*p1 == '\n' && p1[1] == '\n')) 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++; + if (*in) 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++; + } + + if (*suffix == 0) + link_command_spec = spec; + } + + if (link_command_spec == 0) + fatal ("spec file has no spec for linking"); +} + +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; +} + +/* Structure to keep track of the specs that have been defined so far. These + are accessed using %Sspecname in a compiler or link spec. */ + +struct spec_list +{ + char *name; /* Name of the spec. */ + char *spec; /* The spec itself. */ + struct spec_list *next; /* Next spec in linked list. */ +}; + +/* List of specs that have been defined so far. */ + +static struct spec_list *specs = (struct spec_list *) 0; + +/* 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) + char *name; + char *spec; +{ + struct spec_list *sl; + char *old_spec; + + /* See if the spec already exists */ + for (sl = specs; sl; sl = sl->next) + if (strcmp (sl->name, name) == 0) + break; + + if (!sl) + { + /* Not found - make it */ + sl = (struct spec_list *) xmalloc (sizeof (struct spec_list)); + sl->name = save_string (name, strlen (name)); + sl->spec = save_string ("", 0); + sl->next = specs; + specs = sl; + } + + old_spec = sl->spec; + if (name && spec[0] == '+' && isspace (spec[1])) + sl->spec = concat (name, spec + 1, ""); + else + sl->spec = save_string (spec, strlen (spec)); + + if (! strcmp (name, "asm")) + asm_spec = sl->spec; + else if (! strcmp (name, "asm_final")) + asm_final_spec = sl->spec; + else if (! strcmp (name, "cc1")) + cc1_spec = sl->spec; + else if (! strcmp (name, "cc1plus")) + cc1plus_spec = sl->spec; + else if (! strcmp (name, "cpp")) + cpp_spec = sl->spec; + else if (! strcmp (name, "endfile")) + endfile_spec = sl->spec; + else if (! strcmp (name, "lib")) + lib_spec = sl->spec; + else if (! strcmp (name, "link")) + link_spec = sl->spec; + else if (! strcmp (name, "predefines")) + cpp_predefines = sl->spec; + else if (! strcmp (name, "signed_char")) + signed_char_spec = sl->spec; + else if (! strcmp (name, "startfile")) + startfile_spec = sl->spec; + else if (! strcmp (name, "switches_need_spaces")) + switches_need_spaces = sl->spec; + + /* Free the old spec */ + if (old_spec) + free (old_spec); +} + +/* Accumulate a command (program name and args), and run it. */ + +/* Vector of pointers to arguments in the current line of specifications. */ + +static 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; + +/* Number of commands executed so far. */ + +static int execution_count; + +/* Name with which this program was invoked. */ + +static char *programname; + +/* Structures to keep track of prefixes to try when looking for files. */ + +struct prefix_list +{ + 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. */ + int *used_flag_ptr; /* 1 if a file was found with this prefix. */ +}; + +struct path_prefix +{ + struct prefix_list *plist; /* List of prefixes to try */ + int max_len; /* Max length of a prefix in PLIST */ + char *name; /* Name of this list (used in config stuff) */ +}; + +/* List of prefixes to try when looking for executables. */ + +static struct path_prefix exec_prefix = { 0, 0, "exec" }; + +/* List of prefixes to try when looking for startup (crt0) files. */ + +static struct path_prefix startfile_prefix = { 0, 0, "startfile" }; + +/* List of prefixes to try when looking for libraries. */ + +static struct path_prefix library_prefix = { 0, 0, "libraryfile" }; + +/* Suffix to attach to directories searched for commands. */ + +static char *machine_suffix = 0; + +/* Nonzero means don't bypass the machine_suffix. */ + +static int machine_explicit; + +/* 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 +#endif + +#ifndef STANDARD_EXEC_PREFIX +#define STANDARD_EXEC_PREFIX "/usr/local/lib/gcc/" +#endif /* !defined STANDARD_EXEC_PREFIX */ + +static char *standard_exec_prefix = STANDARD_EXEC_PREFIX; +static char *standard_exec_prefix_1 = "/usr/lib/gcc/"; +#ifdef MD_EXEC_PREFIX +static char *md_exec_prefix = MD_EXEC_PREFIX; +#endif + +#ifndef STANDARD_STARTFILE_PREFIX +#define STANDARD_STARTFILE_PREFIX "/usr/local/lib/" +#endif /* !defined STANDARD_STARTFILE_PREFIX */ + +#ifdef MD_STARTFILE_PREFIX +static char *md_startfile_prefix = MD_STARTFILE_PREFIX; +#endif +static char *standard_startfile_prefix = STANDARD_STARTFILE_PREFIX; +static char *standard_startfile_prefix_1 = "/lib/"; +static char *standard_startfile_prefix_2 = "/usr/lib/"; + +/* 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) + char *arg; + int delete_always, delete_failure; +{ + if (argbuf_index + 1 == argbuf_length) + { + argbuf = (char **) xrealloc (argbuf, (argbuf_length *= 2) * sizeof (char *)); + } + + argbuf[argbuf_index++] = arg; + argbuf[argbuf_index] = 0; + + if (delete_always || delete_failure) + record_temp_file (arg, delete_always, delete_failure); +} + +/* 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. + 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. */ + +static char *temp_filename; + +/* Length of the prefix. */ + +static int temp_filename_length; + +/* Define the list of temporary files to delete. */ + +struct temp_file +{ + 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. */ + +static void +record_temp_file (filename, always_delete, fail_delete) + char *filename; + int always_delete; + int fail_delete; +{ + register char *name; + name = xmalloc (strlen (filename) + 1); + strcpy (name, filename); + + if (always_delete) + { + register 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) + { + register 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_temp_files () +{ + register struct temp_file *temp; + + for (temp = always_delete_queue; temp; temp = temp->next) + { +#ifdef DEBUG + int i; + printf ("Delete %s? (y or n) ", temp->name); + fflush (stdout); + i = getchar (); + if (i != '\n') + while (getchar () != '\n') ; + if (i == 'y' || i == 'Y') +#endif /* DEBUG */ + { + struct stat st; + if (stat (temp->name, &st) >= 0) + { + /* Delete only ordinary files. */ + if (S_ISREG (st.st_mode)) + if (unlink (temp->name) < 0) + if (verbose_flag) + perror_with_name (temp->name); + } + } + } + + always_delete_queue = 0; +} + +/* Delete all the files to be deleted on error. */ + +static void +delete_failure_queue () +{ + register struct temp_file *temp; + + for (temp = failure_delete_queue; temp; temp = temp->next) + { +#ifdef DEBUG + int i; + printf ("Delete %s? (y or n) ", temp->name); + fflush (stdout); + i = getchar (); + if (i != '\n') + while (getchar () != '\n') ; + if (i == 'y' || i == 'Y') +#endif /* DEBUG */ + { + if (unlink (temp->name) < 0) + if (verbose_flag) + perror_with_name (temp->name); + } + } +} + +static void +clear_failure_queue () +{ + failure_delete_queue = 0; +} + +/* Compute a string to use as the base of all temporary file names. + It is substituted for %g. */ + +static void +choose_temp_base () +{ + char *base = getenv ("TMPDIR"); + int len; + + if (base == (char *)0) + { +#ifdef P_tmpdir + if (access (P_tmpdir, R_OK | W_OK) == 0) + base = P_tmpdir; +#endif + if (base == (char *)0) + { + if (access ("/usr/tmp", R_OK | W_OK) == 0) + base = "/usr/tmp/"; + else + base = "/tmp/"; + } + } + + len = strlen (base); + temp_filename = xmalloc (len + sizeof("/ccXXXXXX")); + strcpy (temp_filename, base); + if (len > 0 && temp_filename[len-1] != '/') + temp_filename[len++] = '/'; + strcpy (temp_filename + len, "ccXXXXXX"); + + mktemp (temp_filename); + temp_filename_length = strlen (temp_filename); +} + +/* 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; + char *name; + int mode; +{ + char *temp; + char *file_suffix = (mode & X_OK != 0 ? EXECUTABLE_SUFFIX : ""); + struct prefix_list *pl; + int len = pprefix->max_len + strlen (name) + strlen (file_suffix) + 1; + + if (machine_suffix) + len += strlen (machine_suffix); + + temp = xmalloc (len); + + /* Determine the filename to execute (special case for absolute paths). */ + + if (*name == '/') + { + if (access (name, mode)) + { + strcpy (temp, name); + return temp; + } + } + else + for (pl = pprefix->plist; pl; pl = pl->next) + { + if (machine_suffix) + { + strcpy (temp, pl->prefix); + strcat (temp, machine_suffix); + strcat (temp, name); + if (access (temp, mode) == 0) + { + if (pl->used_flag_ptr != 0) + *pl->used_flag_ptr = 1; + return temp; + } + /* Some systems have a suffix for executable files. + So try appending that. */ + if (file_suffix[0] != 0) + { + strcat (temp, file_suffix); + if (access (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 (!machine_explicit || !pl->require_machine_suffix) + { + strcpy (temp, pl->prefix); + strcat (temp, name); + if (access (temp, mode) == 0) + { + if (pl->used_flag_ptr != 0) + *pl->used_flag_ptr = 1; + return temp; + } + /* Some systems have a suffix for executable files. + So try appending that. */ + if (file_suffix[0] != 0) + { + strcat (temp, file_suffix); + if (access (temp, mode) == 0) + { + if (pl->used_flag_ptr != 0) + *pl->used_flag_ptr = 1; + return temp; + } + } + } + } + + free (temp); + return 0; +} + +/* Add an entry for PREFIX in PLIST. If FIRST is set, it goes + at the start of the list, otherwise it goes at the end. + + 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. */ + +static void +add_prefix (pprefix, prefix, first, require_machine_suffix, warn) + struct path_prefix *pprefix; + char *prefix; + int first; + int require_machine_suffix; + int *warn; +{ + struct prefix_list *pl, **prev; + int len; + + if (!first && pprefix->plist) + { + for (pl = pprefix->plist; pl->next; pl = pl->next) + ; + prev = &pl->next; + } + else + prev = &pprefix->plist; + + /* Keep track of the longest prefix */ + + len = strlen (prefix); + if (len > pprefix->max_len) + pprefix->max_len = len; + + pl = (struct prefix_list *) xmalloc (sizeof (struct prefix_list)); + pl->prefix = save_string (prefix, len); + pl->require_machine_suffix = require_machine_suffix; + pl->used_flag_ptr = warn; + if (warn) + *warn = 0; + + if (*prev) + pl->next = *prev; + else + pl->next = (struct prefix_list *) 0; + *prev = pl; +} + +/* Print warnings for any prefixes in the list PPREFIX that were not used. */ + +static void +unused_prefix_warnings (pprefix) + struct path_prefix *pprefix; +{ + struct prefix_list *pl = pprefix->plist; + + while (pl) + { + if (pl->used_flag_ptr != 0 && !*pl->used_flag_ptr) + { + error ("file path prefix `%s' never used", + pl->prefix); + /* Prevent duplicate warnings. */ + *pl->used_flag_ptr = 1; + } + pl = pl->next; + } +} + +/* Get rid of all prefixes built up so far in *PLISTP. */ + +static void +free_path_prefix (pprefix) + struct path_prefix *pprefix; +{ + struct prefix_list *pl = pprefix->plist; + struct prefix_list *temp; + + while (pl) + { + temp = pl; + pl = pl->next; + free (temp->prefix); + free ((char *) temp); + } + pprefix->plist = (struct prefix_list *) 0; +} + +/* stdin file number. */ +#define STDIN_FILE_NO 0 + +/* stdout file number. */ +#define STDOUT_FILE_NO 1 + +/* value of `pipe': port index for reading. */ +#define READ_PORT 0 + +/* value of `pipe': port index for writing. */ +#define WRITE_PORT 1 + +/* Pipe waiting from last process, to be used as input for the next one. + Value is STDIN_FILE_NO if no pipe is waiting + (i.e. the next command is the first of a group). */ + +static int last_pipe_input; + +/* Fork one piped subcommand. FUNC is the system call to use + (either execv or execvp). ARGV is the arg vector to use. + NOT_LAST is nonzero if this is not the last subcommand + (i.e. its output should be piped to the next one.) */ + +#ifdef __MSDOS__ + +/* Declare these to avoid compilation error. They won't be called. */ +int execv(const char *a, const char **b){} +int execvp(const char *a, const char **b){} + +static int +pexecute (func, program, argv, not_last) + char *program; + int (*func)(); + char *argv[]; + int not_last; +{ + char *scmd; + FILE *argfile; + int i; + + scmd = (char *)malloc(strlen(program) + strlen(temp_filename) + 6); + sprintf(scmd, "%s @%s.gp", program, temp_filename); + argfile = fopen(scmd+strlen(program)+2, "w"); + if (argfile == 0) + pfatal_with_name(scmd+strlen(program)+2); + + for (i=1; argv[i]; i++) + fprintf(argfile, "%s\n", argv[i]); + fclose(argfile); + + i = system(scmd); + + remove(scmd+strlen(program)+2); + return i << 8; +} + +#else /* not __MSDOS__ */ + +static int +pexecute (func, program, argv, not_last) + char *program; + int (*func)(); + char *argv[]; + int not_last; +{ + int pid; + int pdes[2]; + int input_desc = last_pipe_input; + int output_desc = STDOUT_FILE_NO; + int retries, sleep_interval; + + /* If this isn't the last process, make a pipe for its output, + and record it as waiting to be the input to the next process. */ + + if (not_last) + { + if (pipe (pdes) < 0) + pfatal_with_name ("pipe"); + output_desc = pdes[WRITE_PORT]; + last_pipe_input = pdes[READ_PORT]; + } + else + last_pipe_input = STDIN_FILE_NO; + + /* Fork a subprocess; wait and retry if it fails. */ + sleep_interval = 1; + for (retries = 0; retries < 4; retries++) + { + pid = vfork (); + if (pid >= 0) + break; + sleep (sleep_interval); + sleep_interval *= 2; + } + + switch (pid) + { + case -1: +#ifdef vfork + pfatal_with_name ("fork"); +#else + pfatal_with_name ("vfork"); +#endif + /* NOTREACHED */ + return 0; + + case 0: /* child */ + /* Move the input and output pipes into place, if nec. */ + if (input_desc != STDIN_FILE_NO) + { + close (STDIN_FILE_NO); + dup (input_desc); + close (input_desc); + } + if (output_desc != STDOUT_FILE_NO) + { + close (STDOUT_FILE_NO); + dup (output_desc); + close (output_desc); + } + + /* Close the parent's descs that aren't wanted here. */ + if (last_pipe_input != STDIN_FILE_NO) + close (last_pipe_input); + + /* Exec the program. */ + (*func) (program, argv); + perror_exec (program); + exit (-1); + /* NOTREACHED */ + return 0; + + default: + /* In the parent, after forking. + Close the descriptors that we made for this child. */ + if (input_desc != STDIN_FILE_NO) + close (input_desc); + if (output_desc != STDOUT_FILE_NO) + close (output_desc); + + /* Return child's process number. */ + return pid; + } +} + +#endif /* not __MSDOS__ */ + +/* 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 + { + char *prog; /* program name. */ + 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_prefix, 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. */ +#ifdef __MSDOS__ + fatal ("-pipe not supported under MS-DOS"); +#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_prefix, 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) + { + /* Print each piped command as a separate line. */ + for (i = 0; i < n_commands ; i++) + { + char **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 + fprintf (stderr, "\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. */ + + last_pipe_input = STDIN_FILE_NO; + for (i = 0; i < n_commands; i++) + { + char *string = commands[i].argv[0]; + + commands[i].pid = pexecute ((string != commands[i].prog ? execv : execvp), + string, commands[i].argv, + i + 1 < n_commands); + + if (string != commands[i].prog) + free (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. */ + + { + int ret_code = 0; + + for (i = 0; i < n_commands; i++) + { + int status; + int pid; + char *prog; + +#ifdef __MSDOS__ + status = pid = commands[i].pid; +#else + pid = wait (&status); +#endif + if (pid < 0) + abort (); + + if (status != 0) + { + int j; + for (j = 0; j < n_commands; j++) + if (commands[j].pid == pid) + prog = commands[j].prog; + + if ((status & 0x7F) != 0) + fatal ("Internal compiler error: program %s got fatal signal %d", + prog, (status & 0x7F)); + if (((status & 0xFF00) >> 8) >= MIN_FATAL_STATUS) + ret_code = -1; + } + } + 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 `valid' field is nonzero if any spec has looked at this switch; + if it remains zero at the end of the run, it must be meaningless. */ + +struct switchstr +{ + char *part1; + char **args; + int valid; +}; + +static struct switchstr *switches; + +static int n_switches; + +struct infile +{ + char *name; + char *language; +}; + +/* Also a vector of input files specified. */ + +static struct infile *infiles; + +static int n_infiles; + +/* And a vector of corresponding output files is made up later. */ + +static char **outfiles; + +/* Create the vector `switches' and its contents. + Store its length in `n_switches'. */ + +static void +process_command (argc, argv) + int argc; + char **argv; +{ + register int i; + char *temp; + char *spec_lang = 0; + int last_language_n_infiles; + + n_switches = 0; + n_infiles = 0; + spec_version = version_string; + + /* Set up the default search paths. */ + + temp = getenv ("GCC_EXEC_PREFIX"); + if (temp) + { + add_prefix (&exec_prefix, temp, 0, 0, 0); + add_prefix (&startfile_prefix, temp, 0, 0, 0); + } + + /* COMPILER_PATH and LIBRARY_PATH have values + that are lists of directory names with colons. */ + + temp = getenv ("COMPILER_PATH"); + if (temp) + { + char *startp, *endp; + char *nstore = (char *) alloca (strlen (temp) + 3); + + startp = endp = temp; + while (1) + { + if ((*endp == ':') || (*endp == 0)) + { + strncpy (nstore, startp, endp-startp); + if (endp == startp) + { + strcpy (nstore, "./"); + } + else if (endp[-1] != '/') + { + nstore[endp-startp] = '/'; + nstore[endp-startp+1] = 0; + } + else + nstore[endp-startp] = 0; + add_prefix (&exec_prefix, nstore, 0, 0, 0); + if (*endp == 0) + break; + endp = startp = endp + 1; + } + else + endp++; + } + } + + temp = getenv ("LIBRARY_PATH"); + if (temp) + { + char *startp, *endp; + char *nstore = (char *) alloca (strlen (temp) + 3); + + startp = endp = temp; + while (1) + { + if ((*endp == ':') || (*endp == 0)) + { + strncpy (nstore, startp, endp-startp); + if (endp == startp) + { + strcpy (nstore, "./"); + } + else if (endp[-1] != '/') + { + nstore[endp-startp] = '/'; + nstore[endp-startp+1] = 0; + } + else + nstore[endp-startp] = 0; + add_prefix (&startfile_prefix, nstore, 0, 0, 0); + /* Make separate list of dirs that came from LIBRARY_PATH. */ + add_prefix (&library_prefix, nstore, 0, 0, 0); + if (*endp == 0) + break; + endp = startp = endp + 1; + } + else + endp++; + } + } + + /* Use LPATH like LIBRARY_PATH (for the CMU build program). */ + temp = getenv ("LPATH"); + if (temp) + { + char *startp, *endp; + char *nstore = (char *) alloca (strlen (temp) + 3); + + startp = endp = temp; + while (1) + { + if ((*endp == ':') || (*endp == 0)) + { + strncpy (nstore, startp, endp-startp); + if (endp == startp) + { + strcpy (nstore, "./"); + } + else if (endp[-1] != '/') + { + nstore[endp-startp] = '/'; + nstore[endp-startp+1] = 0; + } + else + nstore[endp-startp] = 0; + add_prefix (&startfile_prefix, nstore, 0, 0, 0); + /* Make separate list of dirs that came from LIBRARY_PATH. */ + add_prefix (&library_prefix, nstore, 0, 0, 0); + if (*endp == 0) + break; + endp = startp = endp + 1; + } + else + endp++; + } + } + + /* 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. + Here we also parse the switches that cc itself uses (e.g. -v). */ + + for (i = 1; i < argc; i++) + { + if (! strcmp (argv[i], "-dumpspecs")) + { + printf ("*asm:\n%s\n\n", asm_spec); + printf ("*asm_final:\n%s\n\n", asm_final_spec); + printf ("*cpp:\n%s\n\n", cpp_spec); + printf ("*cc1:\n%s\n\n", cc1_spec); + printf ("*cc1plus:\n%s\n\n", cc1plus_spec); + printf ("*endfile:\n%s\n\n", endfile_spec); + printf ("*link:\n%s\n\n", link_spec); + printf ("*lib:\n%s\n\n", lib_spec); + printf ("*startfile:\n%s\n\n", startfile_spec); + printf ("*switches_need_spaces:\n%s\n\n", switches_need_spaces); + printf ("*signed_char:\n%s\n\n", signed_char_spec); + printf ("*predefines:\n%s\n\n", cpp_predefines); + + exit (0); + } + else if (! strcmp (argv[i], "-dumpversion")) + { + printf ("%s\n", version_string); + exit (0); + } + else if (! strcmp (argv[i], "-Xlinker")) + { + /* Pass the argument of this option to the linker when we link. */ + + if (i + 1 == argc) + fatal ("argument to `-Xlinker' is missing"); + + 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] = argv[++i]; + } + else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l') + { + register char *p = &argv[i][1]; + register int c = *p; + + switch (c) + { + case 'b': + 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; + break; + + case 'B': + { + int *temp = (int *) xmalloc (sizeof (int)); + char *value; + if (p[1] == 0 && i + 1 == argc) + fatal ("argument to `-B' is missing"); + if (p[1] == 0) + value = argv[++i]; + else + value = p + 1; + add_prefix (&exec_prefix, value, 1, 0, temp); + add_prefix (&startfile_prefix, value, 1, 0, temp); + } + break; + + case 'v': /* Print our subcommands and print versions. */ + verbose_flag++; + n_switches++; + break; + + case 'V': + 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; + break; + + case 's': + if (!strcmp (p, "save-temps")) + { + save_temps_flag = 1; + break; + } + default: + 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++; + } + + /* 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. */ + add_prefix (&exec_prefix, standard_exec_prefix, 0, 1, 0); + add_prefix (&exec_prefix, standard_exec_prefix_1, 0, 1, 0); + + add_prefix (&startfile_prefix, standard_exec_prefix, 0, 1, 0); + add_prefix (&startfile_prefix, standard_exec_prefix_1, 0, 1, 0); + + /* Use the md prefixes only if not cross-compiling. */ + if (!strcmp (spec_machine, DEFAULT_TARGET_MACHINE)) + { +#ifdef MD_EXEC_PREFIX + add_prefix (&exec_prefix, md_exec_prefix, 0, 1, 0); + add_prefix (&startfile_prefix, md_exec_prefix, 0, 1, 0); +#endif + +#ifdef MD_STARTFILE_PREFIX + add_prefix (&startfile_prefix, md_startfile_prefix, 0, 1, 0); +#endif + } + + add_prefix (&startfile_prefix, standard_startfile_prefix, 0, 0, 0); + add_prefix (&startfile_prefix, standard_startfile_prefix_1, 0, 0, 0); + add_prefix (&startfile_prefix, standard_startfile_prefix_2, 0, 0, 0); +#if 0 /* Can cause surprises, and one can use -B./ instead. */ + add_prefix (&startfile_prefix, "./", 0, 1, 0); +#endif + + /* 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++) + { + if (!strcmp (argv[i], "-Xlinker")) + i++; + else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l') + { + register char *p = &argv[i][1]; + register int c = *p; + + if (c == 'B' || c == 'b' || c == 'V') + { + /* Skip a separate arg, if any. */ + if (p[1] == 0) + i++; + continue; + } + 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); + } + switches[n_switches].args + = (char **) xmalloc ((n_args + 1) * sizeof (char *)); + while (j < n_args) + switches[n_switches].args[j++] = argv[++i]; + /* Null-terminate the vector. */ + switches[n_switches].args[j] = 0; + } else if (*switches_need_spaces != 0 && (c == 'o' || c == 'L')) { + /* On some systems, ld cannot handle -o or -L without space. + So split the -o or -L from its argument. */ + switches[n_switches].part1 = (c == 'o' ? "o" : "L"); + switches[n_switches].args = (char **) xmalloc (2 * sizeof (char *)); + switches[n_switches].args[0] = xmalloc (strlen (p)); + strcpy (switches[n_switches].args[0], &p[1]); + switches[n_switches].args[1] = 0; + } else + switches[n_switches].args = 0; + switches[n_switches].valid = 0; + /* This is always valid, since gcc.c itself understands it. */ + if (!strcmp (p, "save-temps")) + switches[n_switches].valid = 1; + n_switches++; + } + else + { + infiles[n_infiles].language = spec_lang; + infiles[n_infiles++].name = argv[i]; + } + } + + if (n_infiles == last_language_n_infiles) + 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. */ + +static char *input_filename; +static int input_file_number; +static int input_filename_length; +static int basename_length; +static char *input_basename; +static char *input_suffix; + +/* 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; + +/* Process the spec SPEC and run the commands specified therein. + Returns 0 if the spec is successfully processed; -1 if failed. */ + +static int +do_spec (spec) + char *spec; +{ + int value; + + clear_args (); + arg_going = 0; + delete_this_arg = 0; + this_is_output_file = 0; + this_is_library_file = 0; + + 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) + char *spec; + int inswitch; + char *soft_matched_part; +{ + register char *p = spec; + register int c; + int i; + char *string; + + 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], "|")) + { + int i; + 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) + { + switches[i].valid = 1; + break; + } + else + argbuf_index--; + } + + if (argbuf_index > 0) + { + int 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; + 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 'd': + delete_this_arg = 2; + break; + + /* Dump out the directories specified with LIBRARY_PATH, + followed by the directories that we search for startfiles. */ + case 'D': + for (i = 0; i < 2; i++) + { + struct prefix_list *pl + = (i == 0 ? library_prefix.plist : startfile_prefix.plist); + for (; pl; pl = pl->next) + { + if (machine_suffix) + { + if (is_linker_dir (pl->prefix, machine_suffix)) + { + do_spec_1 ("-L", 0, 0); + do_spec_1 (pl->prefix, 1, 0); + do_spec_1 (machine_suffix, 1, 0); + /* Make this a separate argument. */ + do_spec_1 (" ", 0, 0); + } + } + if (!machine_explicit || !pl->require_machine_suffix) + { + if (is_linker_dir (pl->prefix, "")) + { + do_spec_1 ("-L", 0, 0); + do_spec_1 (pl->prefix, 1, 0); + /* Make this a separate argument. */ + do_spec_1 (" ", 0, 0); + } + } + } + } + break; + + case 'e': + /* {...:%efoo} means report an error with `foo' as error message + and don't execute any more commands for this file. */ + { + 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 'g': + if (save_temps_flag) + obstack_grow (&obstack, input_basename, basename_length); + else + { + obstack_grow (&obstack, temp_filename, temp_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 'o': + { + register int f; + for (f = 0; f < n_infiles; f++) + store_arg (outfiles[f], 0, 0); + } + break; + + case 's': + this_is_library_file = 1; + break; + + case 'w': + this_is_output_file = 1; + break; + + case 'W': + { + int 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 != index) + record_temp_file (argbuf[argbuf_index - 1], 0, 1); + break; + } + + /* %x{OPTION} records OPTION for %X to output. */ + case 'x': + { + 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. */ + 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] = 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; + + /* Here are digits and numbers that just process + a certain constant string as a spec. */ + + case '1': + do_spec_1 (cc1_spec, 0, NULL); + break; + + case '2': + do_spec_1 (cc1plus_spec, 0, NULL); + break; + + case 'a': + do_spec_1 (asm_spec, 0, NULL); + break; + + case 'A': + do_spec_1 (asm_final_spec, 0, NULL); + break; + + case 'c': + do_spec_1 (signed_char_spec, 0, NULL); + break; + + case 'C': + do_spec_1 (cpp_spec, 0, NULL); + break; + + case 'E': + do_spec_1 (endfile_spec, 0, NULL); + break; + + case 'l': + do_spec_1 (link_spec, 0, NULL); + break; + + case 'L': + do_spec_1 (lib_spec, 0, NULL); + break; + + case 'p': + { + char *x = (char *) alloca (strlen (cpp_predefines) + 1); + char *buf = x; + 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; + + do_spec_1 (buf, 0, NULL); + } + break; + + case 'P': + { + char *x = (char *) alloca (strlen (cpp_predefines) * 4 + 1); + char *buf = x; + char *y; + + /* Copy all of CPP_PREDEFINES into BUF, + but put __ after every -D and at the end of each arg. */ + y = cpp_predefines; + while (*y != 0) + { + if (! strncmp (y, "-D", 2)) + { + int flag = 0; + + *x++ = *y++; + *x++ = *y++; + + if (strncmp (y, "__", 2)) + { + /* Stick __ at front of macro name. */ + *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) + { + *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)) + { + *x++ = *y++; + *x++ = *y++; + + if (strncmp (y, "__", 2)) + { + /* Stick __ at front of macro name. */ + *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 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; + + do_spec_1 (buf, 0, NULL); + } + break; + + case 'S': + do_spec_1 (startfile_spec, 0, NULL); + 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 '*': + do_spec_1 (soft_matched_part, 1, NULL); + do_spec_1 (" ", 0, NULL); + 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 '(': + case '[': + { + 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 (strncmp (sl->name, name, len) == 0 && !sl->name[len]) + { + name = sl->spec; + break; + } + + if (sl) + { + if (c == '(') + do_spec_1 (name, 0, NULL); + else + { + char *x = (char *) alloca (strlen (name) * 2 + 1); + char *buf = x; + char *y = name; + + /* 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; + } + else if (*y == ' ' || *y == 0) + { + *x++ = '_'; + *x++ = '_'; + if (*y == 0) + break; + else + *x++ = *y++; + } + else + *x++ = *y++; + } + *x = 0; + + do_spec_1 (buf, 0, NULL); + } + } + } + break; + + default: + abort (); + } + 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; + } + + return 0; /* End of string */ +} + +/* Return 0 if we call do_spec_1 and that returns -1. */ + +static char * +handle_braces (p) + register char *p; +{ + register char *q; + char *filter; + int pipe = 0; + int negate = 0; + int suffix = 0; + + 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 = 1, ++p; + + 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) + abort (); + + suffix = 1; + ++p; + } + + filter = p; + while (*p != ':' && *p != '}') p++; + if (*p != '}') + { + register int count = 1; + q = p + 1; + while (count > 0) + { + if (*q == '{') + count++; + else if (*q == '}') + count--; + else if (*q == 0) + abort (); + q++; + } + } + else + q = p + 1; + + if (suffix) + { + int found = (input_suffix != 0 + && strncmp (input_suffix, filter, p - filter) == 0); + + if (p[0] == '}') + abort (); + + if (negate != found + && do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL) < 0) + return 0; + + return q; + } + else if (p[-1] == '*' && p[0] == '}') + { + /* Substitute all matching switches as separate args. */ + register int i; + --p; + for (i = 0; i < n_switches; i++) + if (!strncmp (switches[i].part1, filter, p - filter)) + give_switch (i, 0); + } + else + { + /* Test for presence of the specified switch. */ + register 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; + char *r = p; + + /* First see whether we have %*. */ + substitution = 0; + while (*r && *r == '}') + { + 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 (p + 1, q - p - 2); + + for (i = 0; i < n_switches; i++) + if (!strncmp (switches[i].part1, filter, hard_match_len)) + { + do_spec_1 (string, 0, &switches[i].part1[hard_match_len]); + /* Pass any arguments this switch has. */ + give_switch (i, 1); + } + + return q; + } + } + + /* 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)) + { + switches[i].valid = 1; + present = 1; + } + } + } + /* 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) + { + switches[i].valid = 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 (*p == '}') + { + give_switch (i, 0); + } + else + { + if (do_spec_1 (save_string (p + 1, q - p - 2), 0, NULL) < 0) + return 0; + } + } + else if (pipe) + { + /* Here if a %{|...} conditional fails: output a minus sign, + which means "standard output" or "standard input". */ + do_spec_1 ("-", 0, NULL); + } + } + + return q; +} + +/* 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. */ + +static void +give_switch (switchnum, omit_first_word) + int switchnum; + int omit_first_word; +{ + if (!omit_first_word) + { + do_spec_1 ("-", 0, NULL); + do_spec_1 (switches[switchnum].part1, 1, NULL); + } + do_spec_1 (" ", 0, NULL); + if (switches[switchnum].args != 0) + { + char **p; + for (p = switches[switchnum].args; *p; p++) + { + do_spec_1 (*p, 1, NULL); + do_spec_1 (" ", 0, NULL); + } + } + switches[switchnum].valid = 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 char * +find_file (name) + char *name; +{ + char *newname; + + newname = find_a_file (&startfile_prefix, name, R_OK); + return newname ? newname : name; +} + +/* Determine whether a -L option is relevant. Not required for certain + fixed names and for directories that don't exist. */ + +static int +is_linker_dir (path1, path2) + char *path1; + char *path2; +{ + int len1 = strlen (path1); + int len2 = strlen (path2); + char *path = (char *) alloca (3 + len1 + len2); + char *cp; + struct stat st; + + /* 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. */ + bcopy (path1, path, len1); + bcopy (path2, path + len1, len2); + cp = path + len1 + len2; + if (cp[-1] != '/') + *cp++ = '/'; + *cp++ = '.'; + *cp = '\0'; + + /* Exclude directories that the linker is known to search. */ + if ((cp - path == 6 && strcmp (path, "/lib/.") == 0) + || (cp - path == 10 && strcmp (path, "/usr/lib/.") == 0)) + return 0; + + return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode)); +} + + +/* 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); +} + +int +main (argc, argv) + int argc; + char **argv; +{ + register int i; + int value; + int error_count = 0; + int linker_was_run = 0; + char *explicit_link_files; + char *specs_file; + + programname = argv[0]; + + if (signal (SIGINT, SIG_IGN) != SIG_IGN) + signal (SIGINT, fatal_error); + if (signal (SIGHUP, SIG_IGN) != SIG_IGN) + signal (SIGHUP, fatal_error); + 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 + + argbuf_length = 10; + argbuf = (char **) xmalloc (argbuf_length * sizeof (char *)); + + obstack_init (&obstack); + + /* Choose directory for temp files. */ + + choose_temp_base (); + + /* 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); + + /* 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); + bcopy (default_compilers, compilers, sizeof default_compilers); + n_compilers = n_default_compilers; + + /* Read specs from a file if there is one. */ + + machine_suffix = concat (spec_machine, "/", concat (spec_version, "/", "")); + + specs_file = find_a_file (&startfile_prefix, "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); + + /* Now we have the specs. + Set the `valid' bits for switches that match anything in any spec. */ + + validate_all_switches (); + + /* Warn about any switches that no pass was interested in. */ + + for (i = 0; i < n_switches; i++) + if (! switches[i].valid) + error ("unrecognized option `-%s'", switches[i].part1); + + /* Obey some of the options. */ + + if (verbose_flag) + { + fprintf (stderr, "gcc version %s\n", version_string); + if (n_infiles == 0) + exit (0); + } + + if (n_infiles == 0) + fatal ("No input files specified."); + + /* Make a place to record the compiler output file names + that correspond to the input files. */ + + outfiles = (char **) xmalloc (n_infiles * sizeof (char *)); + bzero (outfiles, n_infiles * sizeof (char *)); + + /* Record which files were specified explicitly as link input. */ + + explicit_link_files = xmalloc (n_infiles); + bzero (explicit_link_files, n_infiles); + + for (i = 0; i < n_infiles; i++) + { + register struct compiler *cp = 0; + int this_file_error = 0; + + /* Tell do_spec what to substitute for %i. */ + + input_filename = infiles[i].name; + input_filename_length = strlen (input_filename); + input_file_number = i; + + /* Use the same thing in %o, unless cp->spec says otherwise. */ + + outfiles[i] = input_filename; + + /* Figure out which compiler from the file's suffix. */ + + cp = lookup_compiler (infiles[i].name, input_filename_length, + infiles[i].language); + + if (cp) + { + /* Ok, we found an applicable compiler. Run its spec. */ + /* First say how much of input_filename to substitute for %b */ + register char *p; + + input_basename = input_filename; + for (p = input_filename; *p; p++) + if (*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); + 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 = ""; + + value = do_spec (cp->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 (); + } + + /* Run ld to link all the compiler output files. */ + + if (error_count == 0) + { + int tmp = execution_count; + value = do_spec (link_command_spec); + if (value < 0) + error_count = 1; + linker_was_run = (tmp != execution_count); + } + + /* Warn if a -B option was specified but the prefix was never used. */ + unused_prefix_warnings (&exec_prefix); + unused_prefix_warnings (&startfile_prefix); + + /* 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; i < n_infiles; i++) + if (explicit_link_files[i]) + error ("%s: linker input file unused since linking not done", + outfiles[i]); + + /* Delete some or all of the temporary files we made. */ + + if (error_count) + delete_failure_queue (); + delete_temp_files (); + + exit (error_count); + /* NOTREACHED */ + return 0; +} + +/* Find the proper compilation spec for the file name NAME, + whose length is LENGTH. LANGUAGE is the specified langauge, + or 0 if none specified. */ + +static struct compiler * +lookup_compiler (name, length, language) + char *name; + int length; + char *language; +{ + struct compiler *cp; + + /* Look for the language, if one is spec'd. */ + if (language != 0) + { + for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) + { + if (language != 0) + { + if (cp->suffix[0] == '@' + && !strcmp (cp->suffix + 1, language)) + return cp; + } + } + error ("language %s not recognized", language); + } + + /* Look for a suffix. */ + for (cp = compilers + n_compilers - 1; cp >= compilers; cp--) + { + if (strlen (cp->suffix) < length + /* See if the suffix matches the end of NAME. */ + && !strcmp (cp->suffix, + name + length - strlen (cp->suffix)) + /* The suffix `-' matches only the file name `-'. */ + && !(!strcmp (cp->suffix, "-") && length != 1)) + { + if (cp->spec[0] == '@') + { + struct compiler *new; + /* 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. + Construct the new compiler spec. */ + language = cp->spec + 1; + new = (struct compiler *) xmalloc (sizeof (struct compiler)); + new->suffix = cp->suffix; + new->spec = lookup_compiler (0, 0, language)->spec; + return new; + } + /* A non-alias entry: return it. */ + return cp; + } + } + + return 0; +} + +char * +xmalloc (size) + unsigned size; +{ + register char *value = (char *) malloc (size); + if (value == 0) + fatal ("virtual memory exhausted"); + return value; +} + +char * +xrealloc (ptr, size) + char *ptr; + unsigned size; +{ + register char *value = (char *) realloc (ptr, size); + if (value == 0) + fatal ("virtual memory exhausted"); + return value; +} + +/* Return a newly-allocated string whose contents concatenate those of s1, s2, s3. */ + +static char * +concat (s1, s2, s3) + char *s1, *s2, *s3; +{ + int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3); + char *result = xmalloc (len1 + len2 + len3 + 1); + + strcpy (result, s1); + strcpy (result + len1, s2); + strcpy (result + len1 + len2, s3); + *(result + len1 + len2 + len3) = 0; + + return result; +} + +static char * +save_string (s, len) + char *s; + int len; +{ + register char *result = xmalloc (len + 1); + + bcopy (s, result, len); + result[len] = 0; + return result; +} + +static void +pfatal_with_name (name) + char *name; +{ + char *s; + + if (errno < sys_nerr) + s = concat ("%s: ", sys_errlist[errno], ""); + else + s = "cannot open %s"; + fatal (s, name); +} + +static void +perror_with_name (name) + char *name; +{ + char *s; + + if (errno < sys_nerr) + s = concat ("%s: ", sys_errlist[errno], ""); + else + s = "cannot open %s"; + error (s, name); +} + +static void +perror_exec (name) + char *name; +{ + char *s; + + if (errno < sys_nerr) + s = concat ("installation problem, cannot exec %s: ", + sys_errlist[errno], ""); + else + s = "installation problem, cannot exec %s"; + error (s, name); +} + +/* More 'friendly' abort that prints the line and file. + config.h can #define abort fancy_abort if you like that sort of thing. */ + +void +fancy_abort () +{ + fatal ("Internal gcc abort."); +} + +#ifdef HAVE_VPRINTF + +/* Output an error message and exit */ + +static void +fatal (va_alist) + va_dcl +{ + va_list ap; + char *format; + + va_start (ap); + format = va_arg (ap, char *); + fprintf (stderr, "%s: ", programname); + vfprintf (stderr, format, ap); + va_end (ap); + fprintf (stderr, "\n"); + delete_temp_files (); + exit (1); +} + +static void +error (va_alist) + va_dcl +{ + va_list ap; + char *format; + + va_start (ap); + format = va_arg (ap, char *); + fprintf (stderr, "%s: ", programname); + vfprintf (stderr, format, ap); + va_end (ap); + + fprintf (stderr, "\n"); +} + +#else /* not HAVE_VPRINTF */ + +static void +fatal (msg, arg1, arg2) + char *msg, *arg1, *arg2; +{ + error (msg, arg1, arg2); + delete_temp_files (); + exit (1); +} + +static void +error (msg, arg1, arg2) + char *msg, *arg1, *arg2; +{ + fprintf (stderr, "%s: ", programname); + fprintf (stderr, msg, arg1, arg2); + fprintf (stderr, "\n"); +} + +#endif /* not HAVE_VPRINTF */ + + +static void +validate_all_switches () +{ + struct compiler *comp; + register char *p; + register char c; + + for (comp = compilers; comp->spec; comp++) + { + p = comp->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); + + /* Now notice switches mentioned in the machine-specific specs. */ + + p = asm_spec; + while (c = *p++) + if (c == '%' && *p == '{') + /* We have a switch spec. */ + validate_switches (p + 1); + + p = asm_final_spec; + while (c = *p++) + if (c == '%' && *p == '{') + /* We have a switch spec. */ + validate_switches (p + 1); + + p = cpp_spec; + while (c = *p++) + if (c == '%' && *p == '{') + /* We have a switch spec. */ + validate_switches (p + 1); + + p = signed_char_spec; + while (c = *p++) + if (c == '%' && *p == '{') + /* We have a switch spec. */ + validate_switches (p + 1); + + p = cc1_spec; + while (c = *p++) + if (c == '%' && *p == '{') + /* We have a switch spec. */ + validate_switches (p + 1); + + p = cc1plus_spec; + while (c = *p++) + if (c == '%' && *p == '{') + /* We have a switch spec. */ + validate_switches (p + 1); + + p = link_spec; + while (c = *p++) + if (c == '%' && *p == '{') + /* We have a switch spec. */ + validate_switches (p + 1); + + p = lib_spec; + while (c = *p++) + if (c == '%' && *p == '{') + /* We have a switch spec. */ + validate_switches (p + 1); + + p = startfile_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) + char *start; +{ + register char *p = start; + char *filter; + register int i; + int suffix = 0; + + if (*p == '|') + ++p; + + if (*p == '!') + ++p; + + if (*p == '.') + suffix = 1, ++p; + + filter = p; + while (*p != ':' && *p != '}') p++; + + if (suffix) + ; + else if (p[-1] == '*') + { + /* Mark all matching switches as valid. */ + --p; + for (i = 0; i < n_switches; i++) + if (!strncmp (switches[i].part1, filter, p - filter)) + switches[i].valid = 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].valid = 1; + } + } +} -- 2.30.2