home *** CD-ROM | disk | FTP | other *** search
- /* Argument parsing and main program of GNU Make.
- Copyright (C) 1988, 89, 90, 91, 94, 1995 Free Software Foundation, Inc.
- This file is part of GNU Make.
-
- GNU Make 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 Make 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 Make; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "make.h"
- #include "commands.h"
- #include "dep.h"
- #include "file.h"
- #include "variable.h"
- #include "job.h"
- #include "getopt.h"
- #include <assert.h>
-
-
- extern void print_variable_data_base ();
- extern void print_dir_data_base ();
- extern void print_rule_data_base ();
- extern void print_file_data_base ();
- extern void print_vpath_data_base ();
-
- #ifndef HAVE_UNISTD_H
- extern int chdir ();
- #endif
- #ifndef STDC_HEADERS
- #ifndef sun /* Sun has an incorrect decl in a header. */
- extern void exit ();
- #endif
- extern double atof ();
- #endif
- extern char *mktemp ();
-
- static void log_working_directory ();
- static void print_data_base (), print_version ();
- static void decode_switches (), decode_env_switches ();
- static void define_makeflags ();
- static char *quote_as_word ();
-
- /* The structure that describes an accepted command switch. */
-
- #if NeXT || NeXT_PDO
- /*
- * The NeXT and NeXT PDO implementations add some features by default. They
- * can be turned off selectively using the following flags:
- *
- * -N all Turn off all NeXT features.
- * -N caret DON'T support the NeXT $> as synonym for $^
- * -N findfile DON'T support the NeXT `findfile' directive.
- * -N makefiles DON't support not remaking Makefiles (remake them!)
- * -N quiet DON'T be quiet: warn about using vpath compatibility
- * mode or missing targets or overriding implicit rules.
- * -N vpath DON'T use the SYSV vpath compatibility mode.
- *
- * OBSOLETE FLAGS:
- * -N noexport Treat every makefile as though it contains the
- * target `.NOEXPORT'.
- * -N makevariable Don't include flags in the definition of `MAKE'.
- * -N emptytarget A missing target is not a fatal error.
- *
- */
- #endif
- struct command_switch
- {
- char c; /* The switch character. */
-
- enum /* Type of the value. */
- {
- flag, /* Turn int flag on. */
- flag_off, /* Turn int flag off. */
- string, /* One string per switch. */
- positive_int, /* A positive integer. */
- floating, /* A floating-point number (double). */
- ignore /* Ignored. */
- } type;
-
- char *value_ptr; /* Pointer to the value-holding variable. */
-
- unsigned int env:1; /* Can come from MAKEFLAGS. */
- unsigned int toenv:1; /* Should be put in MAKEFLAGS. */
- unsigned int no_makefile:1; /* Don't propagate when remaking makefiles. */
-
- char *noarg_value; /* Pointer to value used if no argument is given. */
- char *default_value;/* Pointer to default value. */
-
- char *long_name; /* Long option name. */
- char *argdesc; /* Descriptive word for argument. */
- char *description; /* Description for usage message. */
- };
-
-
- /* The structure used to hold the list of strings given
- in command switches of a type that takes string arguments. */
-
- struct stringlist
- {
- char **list; /* Nil-terminated list of strings. */
- unsigned int idx; /* Index into above. */
- unsigned int max; /* Number of pointers allocated. */
- };
-
-
- /* The recognized command switches. */
-
- /* Nonzero means do not print commands to be executed (-s). */
-
- int silent_flag;
-
- /* Nonzero means just touch the files
- that would appear to need remaking (-t) */
-
- int touch_flag;
-
- /* Nonzero means just print what commands would need to be executed,
- don't actually execute them (-n). */
-
- int just_print_flag;
-
- /* Print debugging trace info (-d). */
-
- int debug_flag = 0;
-
- /* Environment variables override makefile definitions. */
-
- int env_overrides = 0;
-
- /* Nonzero means ignore status codes returned by commands
- executed to remake files. Just treat them all as successful (-i). */
-
- int ignore_errors_flag = 0;
-
- /* Nonzero means don't remake anything, just print the data base
- that results from reading the makefile (-p). */
-
- int print_data_base_flag = 0;
-
- /* Nonzero means don't remake anything; just return a nonzero status
- if the specified targets are not up to date (-q). */
-
- int question_flag = 0;
-
- /* Nonzero means do not use any of the builtin rules (-r). */
-
- int no_builtin_rules_flag = 0;
-
- /* Nonzero means keep going even if remaking some file fails (-k). */
-
- int keep_going_flag;
- int default_keep_going_flag = 0;
-
- /* Nonzero means print directory before starting and when done (-w). */
-
- #if NeXT || NeXT_PDO
- int print_directory_flag = 0;
- #else
- int print_directory_flag = 1;
- #endif
-
- /* Nonzero means ignore print_directory_flag and never print the directory.
- This is necessary because print_directory_flag is set implicitly. */
-
- int inhibit_print_directory_flag = 0;
-
- /* Nonzero means print version information. */
-
- int print_version_flag = 0;
-
- /* List of makefiles given with -f switches. */
-
- static struct stringlist *makefiles = 0;
-
- #if NeXT || NeXT_PDO
- unsigned int next_flag = NEXT_DEFAULT_FLAGS;
- static struct stringlist *next_flag_list = 0;
- #endif
-
- /* Number of job slots (commands that can be run at once). */
-
- unsigned int job_slots = 1;
- unsigned int default_job_slots = 1;
-
- /* Value of job_slots that means no limit. */
-
- static unsigned int inf_jobs = 0;
-
- /* Maximum load average at which multiple jobs will be run.
- Negative values mean unlimited, while zero means limit to
- zero load (which could be useful to start infinite jobs remotely
- but one at a time locally). */
-
- double max_load_average = -1.0;
- double default_load_average = -1.0;
-
- /* List of directories given with -C switches. */
-
- static struct stringlist *directories = 0;
-
- /* List of include directories given with -I switches. */
-
- static struct stringlist *include_directories = 0;
-
- /* List of files given with -o switches. */
-
- static struct stringlist *old_files = 0;
-
- /* List of files given with -W switches. */
-
- static struct stringlist *new_files = 0;
-
- /* If nonzero, we should just print usage and exit. */
-
- static int print_usage_flag = 0;
-
- /* If nonzero, we should print a warning message
- for each reference to an undefined variable. */
-
- int warn_undefined_variables_flag;
-
- /* The table of command switches. */
-
- static const struct command_switch switches[] =
- {
- { 'b', ignore, 0, 0, 0, 0, 0, 0,
- 0, 0,
- "Ignored for compatibility" },
- { 'C', string, (char *) &directories, 0, 0, 0, 0, 0,
- "directory", "DIRECTORY",
- "Change to DIRECTORY before doing anything" },
- { 'd', flag, (char *) &debug_flag, 1, 1, 0, 0, 0,
- "debug", 0,
- "Print lots of debugging information" },
- { 'e', flag, (char *) &env_overrides, 1, 1, 0, 0, 0,
- "environment-overrides", 0,
- "Environment variables override makefiles" },
- { 'f', string, (char *) &makefiles, 0, 0, 0, 0, 0,
- "file", "FILE",
- "Read FILE as a makefile" },
- { 'h', flag, (char *) &print_usage_flag, 0, 0, 0, 0, 0,
- "help", 0,
- "Print this message and exit" },
- { 'i', flag, (char *) &ignore_errors_flag, 1, 1, 0, 0, 0,
- "ignore-errors", 0,
- "Ignore errors from commands" },
- { 'I', string, (char *) &include_directories, 1, 1, 0, 0, 0,
- "include-dir", "DIRECTORY",
- "Search DIRECTORY for included makefiles" },
- { 'j', positive_int, (char *) &job_slots, 1, 1, 0,
- (char *) &inf_jobs, (char *) &default_job_slots,
- "jobs", "N",
- "Allow N jobs at once; infinite jobs with no arg" },
- { 'k', flag, (char *) &keep_going_flag, 1, 1, 0,
- 0, (char *) &default_keep_going_flag,
- "keep-going", 0,
- "Keep going when some targets can't be made" },
- { 'l', floating, (char *) &max_load_average, 1, 1, 0,
- (char *) &default_load_average, (char *) &default_load_average,
- "load-average", "N",
- "Don't start multiple jobs unless load is below N" },
- { 'm', ignore, 0, 0, 0, 0, 0, 0,
- 0, 0,
- "-b" },
- { 'n', flag, (char *) &just_print_flag, 1, 1, 1, 0, 0,
- "just-print", 0,
- "Don't actually run any commands; just print them" },
- { 'o', string, (char *) &old_files, 0, 0, 0, 0, 0,
- "old-file", "FILE",
- "Consider FILE to be very old and don't remake it" },
- { 'p', flag, (char *) &print_data_base_flag, 1, 1, 0, 0, 0,
- "print-data-base", 0,
- "Print make's internal database" },
- { 'q', flag, (char *) &question_flag, 1, 1, 1, 0, 0,
- "question", 0,
- "Run no commands; exit status says if up to date" },
- { 'r', flag, (char *) &no_builtin_rules_flag, 1, 1, 0, 0, 0,
- "no-builtin-rules", 0,
- "Disable the built-in implicit rules" },
- { 's', flag, (char *) &silent_flag, 1, 1, 0, 0, 0,
- "silent", 0,
- "Don't echo commands" },
- { 'S', flag_off, (char *) &keep_going_flag, 1, 1, 0,
- 0, (char *) &default_keep_going_flag,
- "no-keep-going", 0,
- "Turns off -k" },
- { 't', flag, (char *) &touch_flag, 1, 1, 1, 0, 0,
- "touch", 0,
- "Touch targets instead of remaking them" },
- { 'v', flag, (char *) &print_version_flag, 1, 1, 0, 0, 0,
- "version", 0,
- "Print the version number of make and exit" },
- { 'w', flag, (char *) &print_directory_flag, 1, 1, 0, 0, 0,
- "print-directory", 0,
- "Print the current directory" },
- { 2, flag, (char *) &inhibit_print_directory_flag, 1, 1, 0, 0, 0,
- "no-print-directory", 0,
- "Turn off -w, even if it was turned on implicitly" },
- { 'W', string, (char *) &new_files, 0, 0, 0, 0, 0,
- "what-if", "FILE",
- "Consider FILE to be infinitely new" },
- #if NeXT || NeXT_PDO
- { 'N', string, (char *) &next_flag_list, 0, 0, 0, 0, 0,
- "NeXT-option", "OPTION",
- "Turn off value of NeXT OPTION" },
- #endif /* NeXT || NeXT_PDO */
- { 3, flag, (char *) &warn_undefined_variables_flag, 1, 1, 0, 0, 0,
- "warn-undefined-variables", 0,
- "Warn when an undefined variable is referenced" },
- { '\0', }
- };
-
- /* Secondary long names for options. */
-
- static struct option long_option_aliases[] =
- {
- { "quiet", no_argument, 0, 's' },
- { "stop", no_argument, 0, 'S' },
- { "new-file", required_argument, 0, 'W' },
- { "assume-new", required_argument, 0, 'W' },
- { "assume-old", required_argument, 0, 'o' },
- { "max-load", optional_argument, 0, 'l' },
- { "dry-run", no_argument, 0, 'n' },
- { "recon", no_argument, 0, 'n' },
- { "makefile", required_argument, 0, 'f' },
- };
-
- /* The usage message prints the descriptions of options starting in
- this column. Make sure it leaves enough room for the longest
- description to fit in less than 80 characters. */
-
- #define DESCRIPTION_COLUMN 30
-
- /* List of goal targets. */
-
- static struct dep *goals, *lastgoal;
-
- /* List of variables which were defined on the command line
- (or, equivalently, in MAKEFLAGS). */
-
- struct command_variable
- {
- struct command_variable *next;
- struct variable *variable;
- };
- static struct command_variable *command_variables;
-
- /* The name we were invoked with. */
-
- char *program;
-
- /* Our current directory before processing any -C options. */
-
- char *directory_before_chdir;
-
- /* Our current directory after processing all -C options. */
-
- char *starting_directory;
-
- /* Value of the MAKELEVEL variable at startup (or 0). */
-
- unsigned int makelevel;
-
- /* First file defined in the makefile whose name does not
- start with `.'. This is the default to remake if the
- command line does not specify. */
-
- struct file *default_goal_file;
-
- /* Pointer to structure for the file .DEFAULT
- whose commands are used for any file that has none of its own.
- This is zero if the makefiles do not define .DEFAULT. */
-
- struct file *default_file;
-
- /* Nonzero if we have seen the magic `.POSIX' target.
- This turns on pedantic compliance with POSIX.2. */
-
- int posix_pedantic;
-
- /* Mask of signals that are being caught with fatal_error_signal. */
-
- #ifdef POSIX
- sigset_t fatal_signal_set;
- #else
- #ifdef HAVE_SIGSETMASK
- int fatal_signal_mask;
- #endif
- #endif
-
- static struct file *
- enter_command_line_file (name)
- char *name;
- {
- if (name[0] == '~')
- {
- char *expanded = tilde_expand (name);
- if (expanded != 0)
- name = expanded; /* Memory leak; I don't care. */
- }
-
- /* This is also done in parse_file_seq, so this is redundant
- for names read from makefiles. It is here for names passed
- on the command line. */
- while (name[0] == '.' && name[1] == '/' && name[2] != '\0')
- {
- name += 2;
- while (*name == '/')
- /* Skip following slashes: ".//foo" is "foo", not "/foo". */
- ++name;
- }
-
- if (*name == '\0')
- {
- /* It was all slashes! Move back to the dot and truncate
- it after the first slash, so it becomes just "./". */
- do
- --name;
- while (name[0] != '.');
- name[2] = '\0';
- }
-
- return enter_file (savestring (name, strlen (name)));
- }
-
- /* Toggle -d on receipt of SIGUSR1. */
-
- static RETSIGTYPE
- debug_signal_handler (sig)
- int sig;
- {
- debug_flag = ! debug_flag;
- }
-
- #ifdef DEBUG
- #ifdef WIN32
- #include <ntunix.h>
- #else
- #include <sys/time.h>
- #endif
- struct timeval start_time, end_time;
- struct timezone time_zone;
- #endif
-
- int
- main (argc, argv, envp)
- int argc;
- char **argv;
- char **envp;
- {
- extern void init_dir ();
- extern RETSIGTYPE fatal_error_signal (), child_handler ();
- register struct file *f;
- register unsigned int i;
- char **p;
- struct dep *read_makefiles;
- PATH_VAR (current_directory);
- #ifdef DEBUG
- gettimeofday(&start_time, &time_zone);
- #endif
-
- default_goal_file = 0;
- reading_filename = 0;
- reading_lineno_ptr = 0;
-
- #if !defined (HAVE_STRSIGNAL) && !defined (HAVE_SYS_SIGLIST)
- signame_init ();
- #endif
-
- #ifdef POSIX
- sigemptyset (&fatal_signal_set);
- #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
- #else
- #ifdef HAVE_SIGSETMASK
- fatal_signal_mask = 0;
- #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
- #else
- #define ADD_SIG(sig)
- #endif
- #endif
-
- #define FATAL_SIG(sig) \
- if (signal ((sig), fatal_error_signal) == SIG_IGN) \
- (void) signal ((sig), SIG_IGN); \
- else \
- ADD_SIG (sig);
-
- #ifndef WIN32
- FATAL_SIG (SIGHUP);
- FATAL_SIG (SIGQUIT);
- #endif
- FATAL_SIG (SIGINT);
- FATAL_SIG (SIGTERM);
-
- #ifdef SIGDANGER
- FATAL_SIG (SIGDANGER);
- #endif
- #ifdef SIGXCPU
- FATAL_SIG (SIGXCPU);
- #endif
- #ifdef SIGXFSZ
- FATAL_SIG (SIGXFSZ);
- #endif
-
- #undef FATAL_SIG
-
- /* Make sure stdout is line-buffered. */
-
- #ifdef HAVE_SETLINEBUF
- setlinebuf (stdout);
- #else
- #ifndef SETVBUF_REVERSED
- setvbuf (stdout, (char *) 0, _IOLBF, BUFSIZ);
- #else /* setvbuf not reversed. */
- /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
- setvbuf (stdout, _IOLBF, xmalloc (BUFSIZ), BUFSIZ);
- #endif /* setvbuf reversed. */
- #endif /* setlinebuf missing. */
-
- /* Initialize the directory hashing code. */
- init_dir ();
-
- /* Figure out where this program lives. */
-
- if (argv[0] == 0)
- argv[0] = "";
- if (argv[0][0] == '\0')
- program = "make";
- else
- {
- program = rindex (argv[0], '/');
- #if defined (__MSDOS__) || defined (WIN32)
- if (program == 0)
- program = rindex (argv[0], '\\');
- if (program == 0)
- program = rindex (argv[0], ':');
- #endif
- if (program == 0)
- program = argv[0];
- else
- ++program;
- }
-
- /* Set up to access user data (files). */
- user_access ();
-
- /* Figure out where we are. */
-
- if (getcwd (current_directory, GET_PATH_MAX) == 0)
- {
- #ifdef HAVE_GETCWD
- perror_with_name ("getcwd: ", "");
- #else
- error ("getwd: %s", current_directory);
- #endif
- current_directory[0] = '\0';
- directory_before_chdir = 0;
- }
- else
- directory_before_chdir = savestring (current_directory,
- strlen (current_directory));
-
- /* Read in variables from the environment. It is important that this be
- done before $(MAKE) is are figured out so its definitions will not be
- one from the environment. */
-
- for (i = 0; envp[i] != 0; ++i)
- {
- register char *ep = envp[i];
- while (*ep != '=')
- ++ep;
- /* The result of pointer arithmetic is cast to unsigned int for
- machines where ptrdiff_t is a different size that doesn't widen
- the same. */
- define_variable (envp[i], (unsigned int) (ep - envp[i]),
- ep + 1, o_env, 1)
- /* Force exportation of every variable culled from the environment.
- We used to rely on target_environment's v_default code to do this.
- But that does not work for the case where an environment variable
- is redefined in a makefile with `override'; it should then still
- be exported, because it was originally in the environment. */
- ->export = v_export;
- }
-
- /* Decode the switches. */
-
- decode_env_switches ("MAKEFLAGS", 9);
- #if 0
- /* People write things like:
- MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
- and we set the -p, -i and -e switches. Doesn't seem quite right. */
- decode_env_switches ("MFLAGS", 6);
- #endif
- decode_switches (argc, argv, 0);
-
- #if NeXT || NeXT_PDO
- if (next_flag_list != 0) {
- char **p;
- next_flag = NEXT_DEFAULT_FLAGS;
- for (p = next_flag_list->list; *p != 0; p++) {
- if (strcmp(*p, "vpath") == 0) {
- next_flag &= ~NEXT_VPATH_FLAG;
- #if 0
- /* these are built into the 3.69 version */
- } else if (strcmp(*p, "noexport") == 0) {
- next_flag &= ~NEXT_NOEXPORT_FLAG;
- } else if (strcmp(*p, "emptytarget") == 0) {
- next_flag &= ~NEXT_EMPTYTARGET_FLAG;
- } else if (strcmp(*p, "makevariable") == 0) {
- next_flag &= ~NEXT_MAKEVARIABLE_FLAG;
- #endif
- } else if (strcmp(*p, "quiet") == 0) {
- next_flag &= ~NEXT_QUIET_FLAG;
- } else if (strcmp(*p, "makefiles") == 0) {
- next_flag &= ~NEXT_MAKEFILES_FLAG;
- } else if (strcmp(*p, "findfile") == 0) {
- next_flag &= ~NEXT_FINDFILE_FLAG;
- } else if (strcmp(*p, "caret") == 0) {
- next_flag &= ~NEXT_CARET_FLAG;
- } else if (strcmp(*p, "all") == 0) {
- next_flag = 0;
- } else {
- error ("Unrecognized flag `%s'.", *p);
- }
- }
- }
- #endif /* NeXT || NeXT_PDO */
-
- /* Print version information. */
-
- if (print_version_flag || print_data_base_flag || debug_flag)
- print_version ();
-
- /* `make --version' is supposed to just print the version and exit. */
- if (print_version_flag)
- die (0);
-
- #if ! (defined (__MSDOS__) || defined (WIN32))
- /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
- (If it is a relative pathname with a slash, prepend our directory name
- so the result will run the same program regardless of the current dir.
- If it is a name with no slash, we can only hope that PATH did not
- find it in the current directory.) */
-
- if (current_directory[0] != '\0'
- && argv[0] != 0 && argv[0][0] != '/' && index (argv[0], '/') != 0)
- argv[0] = concat (current_directory, "/", argv[0]);
- #endif
-
- #if defined (__MSDOS__) || defined (WIN32)
- /* ensure that argv[0] contains only / characters */
- for (i=0; argv[0][i]; i++)
- if (argv[0][i] == '\\') argv[0][i] = '/';
- #endif
-
- /* The extra indirection through $(MAKE_COMMAND) is done
- for hysterical raisins. */
- (void) define_variable ("MAKE_COMMAND", 12, argv[0], o_default, 0);
- (void) define_variable ("MAKE", 4, "$(MAKE_COMMAND)", o_default, 1);
-
- if (command_variables != 0)
- {
- struct command_variable *cv;
- struct variable *v;
- unsigned int len = 0;
- char *value, *p;
-
- /* Figure out how much space will be taken up by the command-line
- variable definitions. */
- for (cv = command_variables; cv != 0; cv = cv->next)
- {
- v = cv->variable;
- len += 2 * strlen (v->name);
- if (! v->recursive)
- ++len;
- ++len;
- len += 2 * strlen (v->value);
- }
-
- /* Now allocate a buffer big enough and fill it. */
- p = value = (char *) alloca (len);
- for (cv = command_variables; cv != 0; cv = cv->next)
- {
- v = cv->variable;
- p = quote_as_word (p, v->name, 0);
- if (! v->recursive)
- *p++ = ':';
- *p++ = '=';
- p = quote_as_word (p, v->value, 0);
- *p++ = ' ';
- }
- p[-1] = '\0'; /* Kill the final space and terminate. */
-
- /* Define an unchangeable variable with a name that no POSIX.2
- makefile could validly use for its own variable. */
- (void) define_variable ("-*-command-variables-*-", 23,
- value, o_automatic, 0);
-
- /* Define the variable; this will not override any user definition.
- Normally a reference to this variable is written into the value of
- MAKEFLAGS, allowing the user to override this value to affect the
- exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
- allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
- a reference to this hidden variable is written instead. */
- (void) define_variable ("MAKEOVERRIDES", 13,
- "${-*-command-variables-*-}", o_env, 1);
- }
-
- /* If there were -C flags, move ourselves about. */
- if (directories != 0)
- for (i = 0; directories->list[i] != 0; ++i)
- {
- char *dir = directories->list[i];
- if (dir[0] == '~')
- {
- char *expanded = tilde_expand (dir);
- if (expanded != 0)
- dir = expanded;
- }
- if (chdir (dir) < 0)
- pfatal_with_name (dir);
- if (dir != directories->list[i])
- free (dir);
- }
-
- /* Figure out the level of recursion. */
- {
- struct variable *v = lookup_variable ("MAKELEVEL", 9);
- if (v != 0 && *v->value != '\0' && *v->value != '-')
- makelevel = (unsigned int) atoi (v->value);
- else
- makelevel = 0;
- }
-
- #if ! (NeXT || NeXT_PDO)
- /* Except under -s, always do -w in sub-makes and under -C. */
- if (!silent_flag && (directories != 0 || makelevel > 0))
- print_directory_flag = 1;
- #endif
-
- /* Let the user disable that with --no-print-directory. */
- if (inhibit_print_directory_flag)
- print_directory_flag = 0;
-
- /* Construct the list of include directories to search. */
-
- construct_include_path (include_directories == 0 ? (char **) 0
- : include_directories->list);
-
- /* Figure out where we are now, after chdir'ing. */
- if (directories == 0)
- /* We didn't move, so we're still in the same place. */
- starting_directory = current_directory;
- else
- {
- if (getcwd (current_directory, GET_PATH_MAX) == 0)
- {
- #ifdef HAVE_GETCWD
- perror_with_name ("getcwd: ", "");
- #else
- error ("getwd: %s", current_directory);
- #endif
- starting_directory = 0;
- }
- else
- starting_directory = current_directory;
- }
-
- /* Tell the user where he is. */
-
- if (print_directory_flag)
- log_working_directory (1);
-
- /* Read any stdin makefiles into temporary files. */
-
- if (makefiles != 0)
- {
- register unsigned int i;
- for (i = 0; i < makefiles->idx; ++i)
- if (makefiles->list[i][0] == '-' && makefiles->list[i][1] == '\0')
- {
- /* This makefile is standard input. Since we may re-exec
- and thus re-read the makefiles, we read standard input
- into a temporary file and read from that. */
- FILE *outfile;
-
- /* Make a unique filename. */
- #ifdef HAVE_MKTEMP
- static char name[] = "/tmp/GmXXXXXX";
- (void) mktemp (name);
- #else
- static char name[L_tmpnam];
- (void) tmpnam (name);
- #endif
-
- outfile = fopen (name, "w");
- if (outfile == 0)
- pfatal_with_name ("fopen (temporary file)");
- while (!feof (stdin))
- {
- char buf[2048];
- int n = fread (buf, 1, sizeof(buf), stdin);
- if (n > 0 && fwrite (buf, 1, n, outfile) != n)
- pfatal_with_name ("fwrite (temporary file)");
- }
- /* Try to make sure we won't remake the temporary
- file when we are re-exec'd. Kludge-o-matic! */
- fprintf (outfile, "%s:;\n", name);
- (void) fclose (outfile);
-
- /* Replace the name that read_all_makefiles will
- see with the name of the temporary file. */
- {
- char *temp;
- /* SGI compiler requires alloca's result be assigned simply. */
- temp = (char *) alloca (sizeof (name));
- bcopy (name, temp, sizeof (name));
- makefiles->list[i] = temp;
- }
-
- /* Make sure the temporary file will not be remade. */
- f = enter_file (savestring (name, sizeof name - 1));
- f->updated = 1;
- f->update_status = 0;
- f->command_state = cs_finished;
- /* Let it be removed when we're done. */
- f->intermediate = 1;
- /* But don't mention it. */
- f->dontcare = 1;
- }
- }
-
- /* Set up to handle children dying. This must be done before
- reading in the makefiles so that `shell' function calls will work. */
-
- #ifdef SIGCHLD
- (void) signal (SIGCHLD, child_handler);
- #endif
- #ifdef SIGCLD
- (void) signal (SIGCLD, child_handler);
- #endif
-
- /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
- #ifdef SIGUSR1
- (void) signal (SIGUSR1, debug_signal_handler);
- #endif
-
- /* Define the initial list of suffixes for old-style rules. */
-
- set_default_suffixes ();
-
- /* Define the file rules for the built-in suffix rules. These will later
- be converted into pattern rules. We used to do this in
- install_default_implicit_rules, but since that happens after reading
- makefiles, it results in the built-in pattern rules taking precedence
- over makefile-specified suffix rules, which is wrong. */
-
- install_default_suffix_rules ();
-
- /* Define some internal and special variables. */
-
- define_automatic_variables ();
-
- /* Set up the MAKEFLAGS and MFLAGS variables
- so makefiles can look at them. */
-
- define_makeflags (0, 0);
-
- /* Define the default variables. */
- define_default_variables ();
-
- /* Read all the makefiles. */
-
- default_file = enter_file (".DEFAULT");
-
- read_makefiles
- = read_all_makefiles (makefiles == 0 ? (char **) 0 : makefiles->list);
-
- #ifdef DEBUG
- gettimeofday(&end_time, &time_zone);
- end_time.tv_sec -= start_time.tv_sec;
- end_time.tv_usec -= start_time.tv_usec;
- fprintf(stderr,"gnumake[%d]: *** Done reading Makefiles in %3d.%01d (seconds real).\n",
- getpid(), end_time.tv_sec,
- (int) (end_time.tv_usec/100000));
- fflush(stderr);
- #endif
-
- /* Decode switches again, in case the variables were set by the makefile. */
- decode_env_switches ("MAKEFLAGS", 9);
- #if 0
- decode_env_switches ("MFLAGS", 6);
- #endif
-
- /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
-
- define_makeflags (1, 0);
-
- /* Make each `struct dep' point at the `struct file' for the file
- depended on. Also do magic for special targets. */
-
- snap_deps ();
-
- /* Convert old-style suffix rules to pattern rules. It is important to
- do this before installing the built-in pattern rules below, so that
- makefile-specified suffix rules take precedence over built-in pattern
- rules. */
-
- convert_to_pattern ();
-
- /* Install the default implicit pattern rules.
- This used to be done before reading the makefiles.
- But in that case, built-in pattern rules were in the chain
- before user-defined ones, so they matched first. */
-
- install_default_implicit_rules ();
-
- /* Compute implicit rule limits. */
-
- count_implicit_rule_limits ();
-
- /* Construct the listings of directories in VPATH lists. */
-
- build_vpath_lists ();
-
- /* Mark files given with -o flags as very old (00:00:01.00 Jan 1, 1970)
- and as having been updated already, and files given with -W flags as
- brand new (time-stamp as far as possible into the future). */
-
- if (old_files != 0)
- for (p = old_files->list; *p != 0; ++p)
- {
- f = enter_command_line_file (*p);
- f->last_mtime = (time_t) 1;
- f->updated = 1;
- f->update_status = 0;
- f->command_state = cs_finished;
- }
-
- if (new_files != 0)
- {
- for (p = new_files->list; *p != 0; ++p)
- {
- f = enter_command_line_file (*p);
- f->last_mtime = NEW_MTIME;
- }
- }
-
- if (read_makefiles != 0)
- #if NeXT || NeXT_PDO
- if (!(next_flag & NEXT_MAKEFILES_FLAG))
- #endif
- {
- /* Update any makefiles if necessary. */
-
- time_t *makefile_mtimes = 0;
- unsigned int mm_idx = 0;
-
- if (debug_flag)
- puts ("Updating makefiles....");
-
- /* Remove any makefiles we don't want to try to update.
- Also record the current modtimes so we can compare them later. */
- {
- register struct dep *d, *last;
- last = 0;
- d = read_makefiles;
- while (d != 0)
- {
- register struct file *f = d->file;
- if (f->double_colon)
- for (f = f->double_colon; f != NULL; f = f->prev)
- {
- if (f->deps == 0 && f->cmds != 0)
- {
- /* This makefile is a :: target with commands, but
- no dependencies. So, it will always be remade.
- This might well cause an infinite loop, so don't
- try to remake it. (This will only happen if
- your makefiles are written exceptionally
- stupidly; but if you work for Athena, that's how
- you write your makefiles.) */
-
- if (debug_flag)
- printf ("Makefile `%s' might loop; not remaking it.\n",
- f->name);
-
- if (last == 0)
- read_makefiles = d->next;
- else
- last->next = d->next;
-
- /* Free the storage. */
- free ((char *) d);
-
- d = last == 0 ? 0 : last->next;
-
- break;
- }
- }
- if (f == NULL || !f->double_colon)
- {
- if (makefile_mtimes == 0)
- makefile_mtimes = (time_t *) xmalloc (sizeof (time_t));
- else
- makefile_mtimes = (time_t *)
- xrealloc ((char *) makefile_mtimes,
- (mm_idx + 1) * sizeof (time_t));
- makefile_mtimes[mm_idx++] = file_mtime_no_search (d->file);
- last = d;
- d = d->next;
- }
- }
- }
-
- /* Set up `MAKEFLAGS' specially while remaking makefiles. */
- define_makeflags (1, 1);
-
- switch (update_goal_chain (read_makefiles, 1))
- {
- case 1:
- default:
- #define BOGUS_UPDATE_STATUS 0
- assert (BOGUS_UPDATE_STATUS);
- break;
-
- case -1:
- /* Did nothing. */
- break;
-
- case 2:
- /* Failed to update. Figure out if we care. */
- {
- /* Nonzero if any makefile was successfully remade. */
- int any_remade = 0;
- /* Nonzero if any makefile we care about failed
- in updating or could not be found at all. */
- int any_failed = 0;
- register unsigned int i;
-
- for (i = 0; read_makefiles != 0; ++i)
- {
- struct dep *d = read_makefiles;
- read_makefiles = d->next;
- if (d->file->updated)
- {
- /* This makefile was updated. */
- if (d->file->update_status == 0)
- {
- /* It was successfully updated. */
- any_remade |= (file_mtime_no_search (d->file)
- != makefile_mtimes[i]);
- }
- else if (! (d->changed & RM_DONTCARE))
- {
- time_t mtime;
- /* The update failed and this makefile was not
- from the MAKEFILES variable, so we care. */
- error ("Failed to remake makefile `%s'.",
- d->file->name);
- mtime = file_mtime_no_search (d->file);
- any_remade |= (mtime != (time_t) -1
- && mtime != makefile_mtimes[i]);
- }
- }
- else
- /* This makefile was not found at all. */
- if (! (d->changed & RM_DONTCARE))
- {
- /* This is a makefile we care about. See how much. */
- if (d->changed & RM_INCLUDED)
- /* An included makefile. We don't need
- to die, but we do want to complain. */
- error ("Included makefile `%s' was not found.",
- dep_name (d));
- else
- {
- /* A normal makefile. We must die later. */
- error ("Makefile `%s' was not found", dep_name (d));
- any_failed = 1;
- }
- }
-
- free ((char *) d);
- }
-
- if (any_remade)
- goto re_exec;
- else if (any_failed)
- die (2);
- else
- break;
- }
-
- case 0:
- re_exec:
- /* Updated successfully. Re-exec ourselves. */
-
- remove_intermediates (0);
-
- if (print_data_base_flag)
- print_data_base ();
-
- if (print_directory_flag)
- log_working_directory (0);
-
- if (makefiles != 0)
- {
- /* These names might have changed. */
- register unsigned int i, j = 0;
- for (i = 1; i < argc; ++i)
- if (!strcmp (argv[i], "-f")) /* XXX */
- {
- char *p = &argv[i][2];
- if (*p == '\0')
- argv[++i] = makefiles->list[j];
- else
- argv[i] = concat ("-f", makefiles->list[j], "");
- ++j;
- }
- }
-
- if (directories != 0 && directories->idx > 0)
- {
- char bad;
- if (directory_before_chdir != 0)
- {
- if (chdir (directory_before_chdir) < 0)
- {
- perror_with_name ("chdir", "");
- bad = 1;
- }
- else
- bad = 0;
- }
- else
- bad = 1;
- if (bad)
- fatal ("Couldn't change back to original directory.");
- }
-
- for (p = environ; *p != 0; ++p)
- if (!strncmp (*p, "MAKELEVEL=", 10))
- {
- /* The SGI compiler apparently can't understand
- the concept of storing the result of a function
- in something other than a local variable. */
- char *sgi_loses;
- sgi_loses = (char *) alloca (40);
- *p = sgi_loses;
- sprintf (*p, "MAKELEVEL=%u", makelevel);
- break;
- }
-
- if (debug_flag)
- {
- char **p;
- fputs ("Re-executing:", stdout);
- for (p = argv; *p != 0; ++p)
- printf (" %s", *p);
- puts ("");
- }
-
- fflush (stdout);
- fflush (stderr);
-
- exec_command (argv, environ);
- /* NOTREACHED */
- }
- }
-
- /* Set up `MAKEFLAGS' again for the normal targets. */
- define_makeflags (1, 0);
-
- {
- int status;
-
- /* If there were no command-line goals, use the default. */
- if (goals == 0)
- {
- if (default_goal_file != 0)
- {
- goals = (struct dep *) xmalloc (sizeof (struct dep));
- goals->next = 0;
- goals->name = 0;
- goals->file = default_goal_file;
- }
- }
- else
- lastgoal->next = 0;
-
- if (goals != 0)
- {
- /* Update the goals. */
-
- if (debug_flag)
- puts ("Updating goal targets....");
- #ifdef DEBUG
- gettimeofday(&end_time, &time_zone);
- end_time.tv_sec -= start_time.tv_sec;
- end_time.tv_usec -= start_time.tv_usec;
- fprintf(stderr," [%d]: *** Total Initialization in %3d.%01d (seconds real).\n",
- getpid(), end_time.tv_sec,
- (int) (end_time.tv_usec/100000));
- fflush(stderr);
- #endif
-
- switch (update_goal_chain (goals, 0))
- {
- case -1:
- /* Nothing happened. */
- case 0:
- /* Updated successfully. */
- status = 0;
- break;
- case 2:
- /* Updating failed. */
- status = 2;
- break;
- case 1:
- /* We are under -q and would run some commands. */
- status = 1;
- break;
- default:
- abort ();
- }
- }
- else
- {
- if (read_makefiles == 0)
- fatal ("No targets specified and no makefile found");
- else
- fatal ("No targets");
- }
-
- /* Exit. */
- die (status);
- }
-
- return 0;
- }
-
- /* Parsing of arguments, decoding of switches. */
-
- static char options[1 + sizeof (switches) / sizeof (switches[0]) * 3];
- static struct option long_options[(sizeof (switches) / sizeof (switches[0])) +
- (sizeof (long_option_aliases) /
- sizeof (long_option_aliases[0]))];
-
- /* Fill in the string and vector for getopt. */
- static void
- init_switches ()
- {
- register char *p;
- register int c;
- register unsigned int i;
-
- if (options[0] != '\0')
- /* Already done. */
- return;
-
- p = options;
-
- /* Return switch and non-switch args in order, regardless of
- POSIXLY_CORRECT. Non-switch args are returned as option 1. */
- *p++ = '-';
-
- for (i = 0; switches[i].c != '\0'; ++i)
- {
- long_options[i].name = (switches[i].long_name == 0 ? "" :
- switches[i].long_name);
- long_options[i].flag = 0;
- long_options[i].val = switches[i].c;
- if (isalnum (switches[i].c))
- *p++ = switches[i].c;
- switch (switches[i].type)
- {
- case flag:
- case flag_off:
- case ignore:
- long_options[i].has_arg = no_argument;
- break;
-
- case string:
- case positive_int:
- case floating:
- if (isalnum (switches[i].c))
- *p++ = ':';
- if (switches[i].noarg_value != 0)
- {
- if (isalnum (switches[i].c))
- *p++ = ':';
- long_options[i].has_arg = optional_argument;
- }
- else
- long_options[i].has_arg = required_argument;
- break;
- }
- }
- *p = '\0';
- for (c = 0; c < (sizeof (long_option_aliases) /
- sizeof (long_option_aliases[0]));
- ++c)
- long_options[i++] = long_option_aliases[c];
- long_options[i].name = 0;
- }
-
- static void
- handle_non_switch_argument (arg, env)
- char *arg;
- int env;
- {
- /* Non-option argument. It might be a variable definition. */
- struct variable *v;
- if (arg[0] == '-' && arg[1] == '\0')
- /* Ignore plain `-' for compatibility. */
- return;
- v = try_variable_definition ((char *) 0, 0, arg, o_command);
- if (v != 0)
- {
- /* It is indeed a variable definition. Record a pointer to
- the variable for later use in define_makeflags. */
- struct command_variable *cv
- = (struct command_variable *) xmalloc (sizeof (*cv));
- cv->variable = v;
- cv->next = command_variables;
- command_variables = cv;
- }
- else if (! env)
- {
- /* Not an option or variable definition; it must be a goal
- target! Enter it as a file and add it to the dep chain of
- goals. */
- struct file *f = enter_command_line_file (arg);
- f->cmd_target = 1;
-
- if (goals == 0)
- {
- goals = (struct dep *) xmalloc (sizeof (struct dep));
- lastgoal = goals;
- }
- else
- {
- lastgoal->next
- = (struct dep *) xmalloc (sizeof (struct dep));
- lastgoal = lastgoal->next;
- }
- lastgoal->name = 0;
- lastgoal->file = f;
- }
- }
-
- /* Decode switches from ARGC and ARGV.
- They came from the environment if ENV is nonzero. */
-
- static void
- decode_switches (argc, argv, env)
- int argc;
- char **argv;
- int env;
- {
- int bad = 0;
- register const struct command_switch *cs;
- register struct stringlist *sl;
- register int c;
-
- /* getopt does most of the parsing for us.
- First, get its vectors set up. */
-
- init_switches ();
-
- /* Let getopt produce error messages for the command line,
- but not for options from the environment. */
- opterr = !env;
- /* Reset getopt's state. */
- optind = 0;
-
- while (optind < argc)
- {
- /* Parse the next argument. */
- c = getopt_long (argc, argv, options, long_options, (int *) 0);
- if (c == EOF)
- /* End of arguments, or "--" marker seen. */
- break;
- else if (c == 1)
- /* An argument not starting with a dash. */
- handle_non_switch_argument (optarg, env);
- else if (c == '?')
- /* Bad option. We will print a usage message and die later.
- But continue to parse the other options so the user can
- see all he did wrong. */
- bad = 1;
- else
- for (cs = switches; cs->c != '\0'; ++cs)
- if (cs->c == c)
- {
- /* Whether or not we will actually do anything with
- this switch. We test this individually inside the
- switch below rather than just once outside it, so that
- options which are to be ignored still consume args. */
- int doit = !env || cs->env;
-
- switch (cs->type)
- {
- default:
- abort ();
-
- case ignore:
- break;
-
- case flag:
- case flag_off:
- if (doit)
- *(int *) cs->value_ptr = cs->type == flag;
- break;
-
- case string:
- if (!doit)
- break;
-
- if (optarg == 0)
- optarg = cs->noarg_value;
-
- sl = *(struct stringlist **) cs->value_ptr;
- if (sl == 0)
- {
- sl = (struct stringlist *)
- xmalloc (sizeof (struct stringlist));
- sl->max = 5;
- sl->idx = 0;
- sl->list = (char **) xmalloc (5 * sizeof (char *));
- *(struct stringlist **) cs->value_ptr = sl;
- }
- else if (sl->idx == sl->max - 1)
- {
- sl->max += 5;
- sl->list = (char **)
- xrealloc ((char *) sl->list,
- sl->max * sizeof (char *));
- }
- sl->list[sl->idx++] = optarg;
- sl->list[sl->idx] = 0;
- break;
-
- case positive_int:
- if (optarg == 0 && argc > optind
- && isdigit (argv[optind][0]))
- optarg = argv[optind++];
-
- if (!doit)
- break;
-
- if (optarg != 0)
- {
- int i = atoi (optarg);
- if (i < 1)
- {
- if (doit)
- error ("the `-%c' option requires a \
- positive integral argument",
- cs->c);
- bad = 1;
- }
- else
- *(unsigned int *) cs->value_ptr = i;
- }
- else
- *(unsigned int *) cs->value_ptr
- = *(unsigned int *) cs->noarg_value;
- break;
-
- case floating:
- if (optarg == 0 && optind < argc
- && (isdigit (argv[optind][0]) || argv[optind][0] == '.'))
- optarg = argv[optind++];
-
- if (doit)
- *(double *) cs->value_ptr
- = (optarg != 0 ? atof (optarg)
- : *(double *) cs->noarg_value);
-
- break;
- }
-
- /* We've found the switch. Stop looking. */
- break;
- }
- }
-
- /* There are no more options according to getting getopt, but there may
- be some arguments left. Since we have asked for non-option arguments
- to be returned in order, this only happens when there is a "--"
- argument to prevent later arguments from being options. */
- while (optind < argc)
- handle_non_switch_argument (argv[optind++], env);
-
-
- if (!env && (bad || print_usage_flag))
- {
- /* Print a nice usage message. */
- FILE *usageto;
-
- if (print_version_flag)
- print_version ();
-
- usageto = bad ? stderr : stdout;
-
- fprintf (usageto, "Usage: %s [options] [target] ...\n", program);
-
- fputs ("Options:\n", usageto);
- for (cs = switches; cs->c != '\0'; ++cs)
- {
- char buf[1024], shortarg[50], longarg[50], *p;
-
- if (cs->description[0] == '-')
- continue;
-
- switch (long_options[cs - switches].has_arg)
- {
- case no_argument:
- shortarg[0] = longarg[0] = '\0';
- break;
- case required_argument:
- sprintf (longarg, "=%s", cs->argdesc);
- sprintf (shortarg, " %s", cs->argdesc);
- break;
- case optional_argument:
- sprintf (longarg, "[=%s]", cs->argdesc);
- sprintf (shortarg, " [%s]", cs->argdesc);
- break;
- }
-
- p = buf;
-
- if (isalnum (cs->c))
- {
- sprintf (buf, " -%c%s", cs->c, shortarg);
- p += strlen (p);
- }
- if (cs->long_name != 0)
- {
- unsigned int i;
- sprintf (p, "%s--%s%s",
- !isalnum (cs->c) ? " " : ", ",
- cs->long_name, longarg);
- p += strlen (p);
- for (i = 0; i < (sizeof (long_option_aliases) /
- sizeof (long_option_aliases[0]));
- ++i)
- if (long_option_aliases[i].val == cs->c)
- {
- sprintf (p, ", --%s%s",
- long_option_aliases[i].name, longarg);
- p += strlen (p);
- }
- }
- {
- const struct command_switch *ncs = cs;
- while ((++ncs)->c != '\0')
- if (ncs->description[0] == '-' &&
- ncs->description[1] == cs->c)
- {
- /* This is another switch that does the same
- one as the one we are processing. We want
- to list them all together on one line. */
- sprintf (p, ", -%c%s", ncs->c, shortarg);
- p += strlen (p);
- if (ncs->long_name != 0)
- {
- sprintf (p, ", --%s%s", ncs->long_name, longarg);
- p += strlen (p);
- }
- }
- }
-
- if (p - buf > DESCRIPTION_COLUMN - 2)
- /* The list of option names is too long to fit on the same
- line with the description, leaving at least two spaces.
- Print it on its own line instead. */
- {
- fprintf (usageto, "%s\n", buf);
- buf[0] = '\0';
- }
-
- fprintf (usageto, "%*s%s.\n",
- - DESCRIPTION_COLUMN,
- buf, cs->description);
- }
-
- die (bad ? 2 : 0);
- }
- }
-
- /* Decode switches from environment variable ENVAR (which is LEN chars long).
- We do this by chopping the value into a vector of words, prepending a
- dash to the first word if it lacks one, and passing the vector to
- decode_switches. */
-
- static void
- decode_env_switches (envar, len)
- char *envar;
- unsigned int len;
- {
- char *varref = (char *) alloca (2 + len + 2);
- char *value, *p;
- int argc;
- char **argv;
-
- /* Get the variable's value. */
- varref[0] = '$';
- varref[1] = '(';
- bcopy (envar, &varref[2], len);
- varref[2 + len] = ')';
- varref[2 + len + 1] = '\0';
- value = variable_expand (varref);
-
- /* Skip whitespace, and check for an empty value. */
- value = next_token (value);
- len = strlen (value);
- if (len == 0)
- return;
-
- /* Allocate a vector that is definitely big enough. */
- argv = (char **) alloca ((1 + len + 1) * sizeof (char *));
-
- /* Allocate a buffer to copy the value into while we split it into words
- and unquote it. We must use permanent storage for this because
- decode_switches may store pointers into the passed argument words. */
- p = (char *) xmalloc (2 * len);
-
- /* getopt will look at the arguments starting at ARGV[1].
- Prepend a spacer word. */
- argv[0] = 0;
- argc = 1;
- argv[argc] = p;
- while (*value != '\0')
- {
- if (*value == '\\')
- ++value; /* Skip the backslash. */
- else if (isblank (*value))
- {
- /* End of the word. */
- *p++ = '\0';
- argv[++argc] = p;
- do
- ++value;
- while (isblank (*value));
- continue;
- }
- *p++ = *value++;
- }
- *p = '\0';
- argv[++argc] = 0;
-
- if (argc == 2 && argv[1][0] != '-')
- {
- /* There is just one word in the value, and it is not a switch.
- Either this is the single-word form and we should prepend a dash
- before calling decode_switches, or this is the multi-word form and
- there is no dash because it is a variable definition. */
- struct variable *v;
- v = try_variable_definition ((char *) 0, 0, argv[1], o_command);
- if (v != 0)
- {
- /* It was indeed a variable definition, and now it has been
- processed. There is nothing for decode_switches to do.
- Record a pointer to the variable for later use in
- define_makeflags. */
- struct command_variable *cv
- = (struct command_variable *) xmalloc (sizeof (*cv));
- cv->variable = v;
- cv->next = command_variables;
- command_variables = cv;
- return;
- }
-
- /* It wasn't a variable definition, so it's some switches without a
- leading dash. Add one and pass it along to decode_switches. We
- need permanent storage for this in case decode_switches saves
- pointers into the value. */
- argv[1] = concat ("-", argv[1], "");
- }
-
- /* Parse those words. */
- decode_switches (argc, argv, 1);
- }
-
- /* Quote the string IN so that it will be interpreted as a single word with
- no magic by the shell; if DOUBLE_DOLLARS is nonzero, also double dollar
- signs to avoid variable expansion in make itself. Write the result into
- OUT, returning the address of the next character to be written.
- Allocating space for OUT twice the length of IN (thrice if
- DOUBLE_DOLLARS is nonzero) is always sufficient. */
-
- static char *
- quote_as_word (out, in, double_dollars)
- char *out, *in;
- int double_dollars;
- {
- while (*in != '\0')
- {
- if (index ("^;'\"*?[]$<>(){}|&~`\\ \t\r\n\f\v", *in) != 0)
- *out++ = '\\';
- if (double_dollars && *in == '$')
- *out++ = '$';
- *out++ = *in++;
- }
-
- return out;
- }
-
- /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
- command switches. Include options with args if ALL is nonzero.
- Don't include options with the `no_makefile' flag set if MAKEFILE. */
-
- static void
- define_makeflags (all, makefile)
- int all, makefile;
- {
- static const char ref[] = "$(MAKEOVERRIDES)";
- static const char posixref[] = "$(-*-command-variables-*-)";
- register const struct command_switch *cs;
- char *flagstring;
- register char *p;
- unsigned int words;
- struct variable *v;
-
- /* We will construct a linked list of `struct flag's describing
- all the flags which need to go in MAKEFLAGS. Then, once we
- know how many there are and their lengths, we can put them all
- together in a string. */
-
- struct flag
- {
- struct flag *next;
- const struct command_switch *cs;
- char *arg;
- };
- struct flag *flags = 0;
- unsigned int flagslen = 0;
- #if NeXT || NeXT_PDO
- const char * end_of_make_flags = NULL;
- #endif
-
- #define ADD_FLAG(ARG, LEN) \
- do { \
- struct flag *new = (struct flag *) alloca (sizeof (struct flag)); \
- new->cs = cs; \
- new->arg = (ARG); \
- new->next = flags; \
- flags = new; \
- if (new->arg == 0) \
- ++flagslen; /* Just a single flag letter. */ \
- else \
- flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \
- if (!isalnum (cs->c)) \
- /* This switch has no single-letter version, so we use the long. */ \
- flagslen += 2 + strlen (cs->long_name); \
- } while (0)
-
- for (cs = switches; cs->c != '\0'; ++cs)
- if (cs->toenv && (!makefile || !cs->no_makefile))
- switch (cs->type)
- {
- default:
- abort ();
-
- case ignore:
- break;
-
- case flag:
- case flag_off:
- if (!*(int *) cs->value_ptr == (cs->type == flag_off)
- && (cs->default_value == 0
- || *(int *) cs->value_ptr != *(int *) cs->default_value))
- ADD_FLAG (0, 0);
- break;
-
- case positive_int:
- if (all)
- {
- if ((cs->default_value != 0
- && (*(unsigned int *) cs->value_ptr
- == *(unsigned int *) cs->default_value)))
- break;
- else if (cs->noarg_value != 0
- && (*(unsigned int *) cs->value_ptr ==
- *(unsigned int *) cs->noarg_value))
- ADD_FLAG ("", 0); /* Optional value omitted; see below. */
- else if (cs->c == 'j')
- /* Special case for `-j'. */
- ADD_FLAG ("1", 1);
- else
- {
- char *buf = (char *) alloca (30);
- sprintf (buf, "%u", *(unsigned int *) cs->value_ptr);
- ADD_FLAG (buf, strlen (buf));
- }
- }
- break;
-
- case floating:
- if (all)
- {
- if (cs->default_value != 0
- && (*(double *) cs->value_ptr
- == *(double *) cs->default_value))
- break;
- else if (cs->noarg_value != 0
- && (*(double *) cs->value_ptr
- == *(double *) cs->noarg_value))
- ADD_FLAG ("", 0); /* Optional value omitted; see below. */
- else
- {
- char *buf = (char *) alloca (100);
- sprintf (buf, "%g", *(double *) cs->value_ptr);
- ADD_FLAG (buf, strlen (buf));
- }
- }
- break;
-
- case string:
- if (all)
- {
- struct stringlist *sl = *(struct stringlist **) cs->value_ptr;
- if (sl != 0)
- {
- /* Add the elements in reverse order, because
- all the flags get reversed below; and the order
- matters for some switches (like -I). */
- register unsigned int i = sl->idx;
- while (i-- > 0)
- ADD_FLAG (sl->list[i], strlen (sl->list[i]));
- }
- }
- break;
- }
-
- flagslen += 4 + sizeof posixref; /* Four more for the possible " -- ". */
-
- #undef ADD_FLAG
-
- /* Construct the value in FLAGSTRING.
- We allocate enough space for a preceding dash and trailing null. */
- flagstring = (char *) alloca (1 + flagslen + 1);
- p = flagstring;
- words = 1;
- *p++ = '-';
- while (flags != 0)
- {
- /* Add the flag letter or name to the string. */
- if (!isalnum (flags->cs->c))
- {
- *p++ = '-';
- strcpy (p, flags->cs->long_name);
- p += strlen (p);
- }
- else
- *p++ = flags->cs->c;
- if (flags->arg != 0)
- {
- /* A flag that takes an optional argument which in this case is
- omitted is specified by ARG being "". We must distinguish
- because a following flag appended without an intervening " -"
- is considered the arg for the first. */
- if (flags->arg[0] != '\0')
- {
- /* Add its argument too. */
- *p++ = !isalnum (flags->cs->c) ? '=' : ' ';
- p = quote_as_word (p, flags->arg, 1);
- }
- ++words;
- /* Write a following space and dash, for the next flag. */
- *p++ = ' ';
- *p++ = '-';
- }
- else if (!isalnum (flags->cs->c))
- {
- ++words;
- /* Long options must each go in their own word,
- so we write the following space and dash. */
- *p++ = ' ';
- *p++ = '-';
- }
- flags = flags->next;
- }
-
- if (all && command_variables != 0)
- {
- /* Now write a reference to $(MAKEOVERRIDES), which contains all the
- command-line variable definitions. */
-
- if (p == &flagstring[1])
- #if NeXT || NeXT_PDO
- {
- /* No flags written, so elide the leading dash already written. */
- p = flagstring;
- end_of_make_flags = flagstring;
- }
- else
- {
- end_of_make_flags = p;
- #else
- /* No flags written, so elide the leading dash already written. */
- p = flagstring;
- else
- {
- #endif
- /* Separate the variables from the switches with a "--" arg. */
- if (p[-1] != '-')
- {
- /* We did not already write a trailing " -". */
- *p++ = ' ';
- *p++ = '-';
- }
- /* There is a trailing " -"; fill it out to " -- ". */
- *p++ = '-';
- *p++ = ' ';
- }
-
- /* Copy in the string. */
- if (posix_pedantic)
- {
- bcopy (posixref, p, sizeof posixref - 1);
- p += sizeof posixref - 1;
- }
- else
- {
- bcopy (ref, p, sizeof ref - 1);
- p += sizeof ref - 1;
- }
- }
- else if (p == &flagstring[1])
- {
- words = 0;
- --p;
- }
- else if (p[-1] == '-')
- /* Kill the final space and dash. */
- p -= 2;
- /* Terminate the string. */
- *p = '\0';
-
- v = define_variable ("MAKEFLAGS", 9,
- /* If there is just a single word of switches,
- omit the leading dash unless it is a single
- long option with two leading dashes. */
- &flagstring[(words == 1 && command_variables == 0
- && flagstring[1] != '-')
- ? 1 : 0],
- /* This used to use o_env, but that lost when a
- makefile defined MAKEFLAGS. Makefiles set
- MAKEFLAGS to add switches, but we still want
- to redefine its value with the full set of
- switches. Of course, an override or command
- definition will still take precedence. */
- o_file, 1);
- if (! all)
- /* The first time we are called, set MAKEFLAGS to always be exported.
- We should not do this again on the second call, because that is
- after reading makefiles which might have done `unexport MAKEFLAGS'. */
- v->export = v_export;
-
- #if NeXT || NeXT_PDO
- if (end_of_make_flags)
- *end_of_make_flags = '\0';
- #else
- /* Since MFLAGS is not parsed for flags, there is no reason to
- override any makefile redefinition. */
- #endif
- (void) define_variable ("MFLAGS", 6, flagstring, o_env, 1);
- #if 0
- fprintf(stderr,"gnumake: defining MFLAGS to be: %s\n",flagstring);
- #endif
- }
-
- /* Print version information. */
-
- static void
- print_version ()
- {
- static int printed_version = 0;
-
- char *precede = print_data_base_flag ? "# " : "";
-
- if (printed_version)
- /* Do it only once. */
- return;
-
- printf ("%sGNU Make version %s", precede, version_string);
- if (remote_description != 0 && *remote_description != '\0')
- printf ("-%s", remote_description);
-
- printf (", by Richard Stallman and Roland McGrath.\n\
- %sCopyright (C) 1988, 89, 90, 91, 92, 93, 94, 95 Free Software Foundation, Inc.\n\
- %sThis is free software; see the source for copying conditions.\n\
- %sThere is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\
- %sPARTICULAR PURPOSE.\n\n", precede, precede, precede, precede);
-
- printed_version = 1;
-
- /* Flush stdout so the user doesn't have to wait to see the
- version information while things are thought about. */
- fflush (stdout);
- }
-
- /* Print a bunch of information about this and that. */
-
- static void
- print_data_base ()
- {
- extern char *ctime ();
- time_t when;
-
- when = time ((time_t *) 0);
- printf ("\n# Make data base, printed on %s", ctime (&when));
-
- print_variable_data_base ();
- print_dir_data_base ();
- print_rule_data_base ();
- print_file_data_base ();
- print_vpath_data_base ();
-
- when = time ((time_t *) 0);
- printf ("\n# Finished Make data base on %s\n", ctime (&when));
- }
-
- /* Exit with STATUS, cleaning up as necessary. */
-
- void
- die (status)
- int status;
- {
- static char dying = 0;
-
- if (!dying)
- {
- int err;
-
- dying = 1;
-
- /* Try to move back to the original directory. This is essential on
- MS-DOS (where there is really only one process), and on Unix it
- puts core files in the original directory instead of the -C
- directory. */
- if (directory_before_chdir != 0)
- chdir (directory_before_chdir);
-
- if (print_version_flag)
- print_version ();
-
- /* Wait for children to die. */
- for (err = status != 0; job_slots_used > 0; err = 0)
- reap_children (1, err);
-
- /* Remove the intermediate files. */
- remove_intermediates (0);
-
- if (print_data_base_flag)
- print_data_base ();
-
- if (print_directory_flag)
- log_working_directory (0);
- }
-
- exit (status);
- }
-
- /* Write a message indicating that we've just entered or
- left (according to ENTERING) the current directory. */
-
- static void
- log_working_directory (entering)
- int entering;
- {
- static int entered = 0;
- char *message = entering ? "Entering" : "Leaving";
-
- if (entering)
- entered = 1;
- else if (!entered)
- /* Don't print the leaving message if we
- haven't printed the entering message. */
- return;
-
- if (print_data_base_flag)
- fputs ("# ", stdout);
-
- if (makelevel == 0)
- printf ("%s: %s ", program, message);
- else
- printf ("%s[%u]: %s ", program, makelevel, message);
-
- if (starting_directory == 0)
- puts ("an unknown directory");
- else
- printf ("directory `%s'\n", starting_directory);
- }
-