1 /* Argument parsing and main program of GNU Make.
2 Copyright (C) 1988,89,90,91,94,95,96,97,98,99 Free Software Foundation, Inc.
3 This file is part of GNU Make.
5 GNU Make is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2, or (at your option)
10 GNU Make is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNU Make; see the file COPYING. If not, write to
17 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
18 MA 02111-1307, USA. */
31 # include <proto/dos.h>
35 #include "pathstuff.h"
37 #if defined(MAKE_JOBSERVER) && defined(HAVE_FCNTL_H)
42 int __stack = 20000; /* Make sure we have 20K of stack space */
45 extern void init_dir PARAMS ((void));
46 extern void remote_setup PARAMS ((void));
47 extern void remote_cleanup PARAMS ((void));
48 extern RETSIGTYPE fatal_error_signal PARAMS ((int sig));
50 extern void print_variable_data_base PARAMS ((void));
51 extern void print_dir_data_base PARAMS ((void));
52 extern void print_rule_data_base PARAMS ((void));
53 extern void print_file_data_base PARAMS ((void));
54 extern void print_vpath_data_base PARAMS ((void));
56 #if defined HAVE_WAITPID || defined HAVE_WAIT3
57 # define HAVE_WAIT_NOHANG
64 # ifndef sun /* Sun has an incorrect decl in a header. */
65 extern void exit PARAMS ((int)) __attribute__ ((noreturn));
67 extern double atof ();
69 extern char *mktemp ();
71 static void print_data_base PARAMS ((void));
72 static void print_version PARAMS ((void));
73 static void decode_switches PARAMS ((int argc, char **argv, int env));
74 static void decode_env_switches PARAMS ((char *envar, unsigned int len));
75 static void define_makeflags PARAMS ((int all, int makefile));
76 static char *quote_as_word PARAMS ((char *out, char *in, int double_dollars));
78 /* The structure that describes an accepted command switch. */
82 int c; /* The switch character. */
84 enum /* Type of the value. */
86 flag, /* Turn int flag on. */
87 flag_off, /* Turn int flag off. */
88 string, /* One string per switch. */
89 positive_int, /* A positive integer. */
90 floating, /* A floating-point number (double). */
94 char *value_ptr; /* Pointer to the value-holding variable. */
96 unsigned int env:1; /* Can come from MAKEFLAGS. */
97 unsigned int toenv:1; /* Should be put in MAKEFLAGS. */
98 unsigned int no_makefile:1; /* Don't propagate when remaking makefiles. */
100 char *noarg_value; /* Pointer to value used if no argument is given. */
101 char *default_value;/* Pointer to default value. */
103 char *long_name; /* Long option name. */
104 char *argdesc; /* Descriptive word for argument. */
105 char *description; /* Description for usage message. */
106 /* 0 means internal; don't display help. */
109 /* True if C is a switch value that corresponds to a short option. */
111 #define short_option(c) ((c) <= CHAR_MAX)
113 /* The structure used to hold the list of strings given
114 in command switches of a type that takes string arguments. */
118 char **list; /* Nil-terminated list of strings. */
119 unsigned int idx; /* Index into above. */
120 unsigned int max; /* Number of pointers allocated. */
124 /* The recognized command switches. */
126 /* Nonzero means do not print commands to be executed (-s). */
130 /* Nonzero means just touch the files
131 that would appear to need remaking (-t) */
135 /* Nonzero means just print what commands would need to be executed,
136 don't actually execute them (-n). */
140 /* Print debugging trace info (-d). */
145 /* Suspend make in main for a short time to allow debugger to attach */
147 int suspend_flag = 0;
150 /* Environment variables override makefile definitions. */
152 int env_overrides = 0;
154 /* Nonzero means ignore status codes returned by commands
155 executed to remake files. Just treat them all as successful (-i). */
157 int ignore_errors_flag = 0;
159 /* Nonzero means don't remake anything, just print the data base
160 that results from reading the makefile (-p). */
162 int print_data_base_flag = 0;
164 /* Nonzero means don't remake anything; just return a nonzero status
165 if the specified targets are not up to date (-q). */
167 int question_flag = 0;
169 /* Nonzero means do not use any of the builtin rules (-r) / variables (-R). */
171 int no_builtin_rules_flag = 0;
172 int no_builtin_variables_flag = 0;
174 /* Nonzero means keep going even if remaking some file fails (-k). */
177 int default_keep_going_flag = 0;
179 /* Nonzero means print directory before starting and when done (-w). */
181 int print_directory_flag = 0;
183 /* Nonzero means ignore print_directory_flag and never print the directory.
184 This is necessary because print_directory_flag is set implicitly. */
186 int inhibit_print_directory_flag = 0;
188 /* Nonzero means print version information. */
190 int print_version_flag = 0;
192 /* List of makefiles given with -f switches. */
194 static struct stringlist *makefiles = 0;
196 /* Number of job slots (commands that can be run at once). */
198 unsigned int job_slots = 1;
199 unsigned int default_job_slots = 1;
201 /* Value of job_slots that means no limit. */
203 static unsigned int inf_jobs = 0;
205 /* File descriptors for the jobs pipe. */
207 static struct stringlist *jobserver_fds = 0;
209 int job_fds[2] = { -1, -1 };
212 /* Maximum load average at which multiple jobs will be run.
213 Negative values mean unlimited, while zero means limit to
214 zero load (which could be useful to start infinite jobs remotely
215 but one at a time locally). */
217 double max_load_average = -1.0;
218 double default_load_average = -1.0;
220 int max_load_average = -1;
221 int default_load_average = -1;
224 /* List of directories given with -C switches. */
226 static struct stringlist *directories = 0;
228 /* List of include directories given with -I switches. */
230 static struct stringlist *include_directories = 0;
232 /* List of files given with -o switches. */
234 static struct stringlist *old_files = 0;
236 /* List of files given with -W switches. */
238 static struct stringlist *new_files = 0;
240 /* If nonzero, we should just print usage and exit. */
242 static int print_usage_flag = 0;
244 /* If nonzero, we should print a warning message
245 for each reference to an undefined variable. */
247 int warn_undefined_variables_flag;
249 /* The table of command switches. */
251 static const struct command_switch switches[] =
253 { 'b', ignore, 0, 0, 0, 0, 0, 0,
255 _("Ignored for compatibility") },
256 { 'C', string, (char *) &directories, 0, 0, 0, 0, 0,
257 "directory", _("DIRECTORY"),
258 _("Change to DIRECTORY before doing anything") },
259 { 'd', flag, (char *) &debug_flag, 1, 1, 0, 0, 0,
261 _("Print lots of debugging information") },
263 { 'D', flag, (char *) &suspend_flag, 1, 1, 0, 0, 0,
264 "suspend-for-debug", 0,
265 _("Suspend process to allow a debugger to attach") },
267 { 'e', flag, (char *) &env_overrides, 1, 1, 0, 0, 0,
268 "environment-overrides", 0,
269 _("Environment variables override makefiles") },
270 { 'f', string, (char *) &makefiles, 0, 0, 0, 0, 0,
272 _("Read FILE as a makefile") },
273 { 'h', flag, (char *) &print_usage_flag, 0, 0, 0, 0, 0,
275 _("Print this message and exit") },
276 { 'i', flag, (char *) &ignore_errors_flag, 1, 1, 0, 0, 0,
278 _("Ignore errors from commands") },
279 { 'I', string, (char *) &include_directories, 1, 1, 0, 0, 0,
280 "include-dir", _("DIRECTORY"),
281 _("Search DIRECTORY for included makefiles") },
283 positive_int, (char *) &job_slots, 1, 1, 0,
284 (char *) &inf_jobs, (char *) &default_job_slots,
286 _("Allow N jobs at once; infinite jobs with no arg") },
287 { CHAR_MAX+1, string, (char *) &jobserver_fds, 1, 1, 0, 0, 0,
290 { 'k', flag, (char *) &keep_going_flag, 1, 1, 0,
291 0, (char *) &default_keep_going_flag,
293 _("Keep going when some targets can't be made") },
295 { 'l', floating, (char *) &max_load_average, 1, 1, 0,
296 (char *) &default_load_average, (char *) &default_load_average,
298 _("Don't start multiple jobs unless load is below N") },
300 { 'l', positive_int, (char *) &max_load_average, 1, 1, 0,
301 (char *) &default_load_average, (char *) &default_load_average,
303 _("Don't start multiple jobs unless load is below N") },
305 { 'm', ignore, 0, 0, 0, 0, 0, 0,
308 { 'n', flag, (char *) &just_print_flag, 1, 1, 1, 0, 0,
310 _("Don't actually run any commands; just print them") },
311 { 'o', string, (char *) &old_files, 0, 0, 0, 0, 0,
312 "old-file", _("FILE"),
313 _("Consider FILE to be very old and don't remake it") },
314 { 'p', flag, (char *) &print_data_base_flag, 1, 1, 0, 0, 0,
315 "print-data-base", 0,
316 _("Print make's internal database") },
317 { 'q', flag, (char *) &question_flag, 1, 1, 1, 0, 0,
319 _("Run no commands; exit status says if up to date") },
320 { 'r', flag, (char *) &no_builtin_rules_flag, 1, 1, 0, 0, 0,
321 "no-builtin-rules", 0,
322 _("Disable the built-in implicit rules") },
323 { 'R', flag, (char *) &no_builtin_variables_flag, 1, 1, 0, 0, 0,
324 "no-builtin-variables", 0,
325 _("Disable the built-in variable settings") },
326 { 's', flag, (char *) &silent_flag, 1, 1, 0, 0, 0,
328 _("Don't echo commands") },
329 { 'S', flag_off, (char *) &keep_going_flag, 1, 1, 0,
330 0, (char *) &default_keep_going_flag,
333 { 't', flag, (char *) &touch_flag, 1, 1, 1, 0, 0,
335 _("Touch targets instead of remaking them") },
336 { 'v', flag, (char *) &print_version_flag, 1, 1, 0, 0, 0,
338 _("Print the version number of make and exit") },
339 { 'w', flag, (char *) &print_directory_flag, 1, 1, 0, 0, 0,
340 "print-directory", 0,
341 _("Print the current directory") },
342 { CHAR_MAX+2, flag, (char *) &inhibit_print_directory_flag, 1, 1, 0, 0, 0,
343 "no-print-directory", 0,
344 _("Turn off -w, even if it was turned on implicitly") },
345 { 'W', string, (char *) &new_files, 0, 0, 0, 0, 0,
346 "what-if", _("FILE"),
347 _("Consider FILE to be infinitely new") },
348 { CHAR_MAX+3, flag, (char *) &warn_undefined_variables_flag, 1, 1, 0, 0, 0,
349 "warn-undefined-variables", 0,
350 _("Warn when an undefined variable is referenced") },
354 /* Secondary long names for options. */
356 static struct option long_option_aliases[] =
358 { "quiet", no_argument, 0, 's' },
359 { "stop", no_argument, 0, 'S' },
360 { "new-file", required_argument, 0, 'W' },
361 { "assume-new", required_argument, 0, 'W' },
362 { "assume-old", required_argument, 0, 'o' },
363 { "max-load", optional_argument, 0, 'l' },
364 { "dry-run", no_argument, 0, 'n' },
365 { "recon", no_argument, 0, 'n' },
366 { "makefile", required_argument, 0, 'f' },
369 /* The usage message prints the descriptions of options starting in
370 this column. Make sure it leaves enough room for the longest
371 description to fit in less than 80 characters. */
373 #define DESCRIPTION_COLUMN 30
375 /* List of goal targets. */
377 static struct dep *goals, *lastgoal;
379 /* List of variables which were defined on the command line
380 (or, equivalently, in MAKEFLAGS). */
382 struct command_variable
384 struct command_variable *next;
385 struct variable *variable;
387 static struct command_variable *command_variables;
389 /* The name we were invoked with. */
393 /* Our current directory before processing any -C options. */
395 char *directory_before_chdir;
397 /* Our current directory after processing all -C options. */
399 char *starting_directory;
401 /* Value of the MAKELEVEL variable at startup (or 0). */
403 unsigned int makelevel;
405 /* First file defined in the makefile whose name does not
406 start with `.'. This is the default to remake if the
407 command line does not specify. */
409 struct file *default_goal_file;
411 /* Pointer to structure for the file .DEFAULT
412 whose commands are used for any file that has none of its own.
413 This is zero if the makefiles do not define .DEFAULT. */
415 struct file *default_file;
417 /* Nonzero if we have seen the magic `.POSIX' target.
418 This turns on pedantic compliance with POSIX.2. */
422 /* Nonzero if some rule detected clock skew; we keep track so (a) we only
423 print one warning about it during the run, and (b) we can print a final
424 warning at the end of the run. */
426 int clock_skew_detected;
428 /* Mask of signals that are being caught with fatal_error_signal. */
431 sigset_t fatal_signal_set;
433 #ifdef HAVE_SIGSETMASK
434 int fatal_signal_mask;
439 enter_command_line_file (name)
443 fatal (NILF, _("empty string invalid as file name"));
447 char *expanded = tilde_expand (name);
449 name = expanded; /* Memory leak; I don't care. */
452 /* This is also done in parse_file_seq, so this is redundant
453 for names read from makefiles. It is here for names passed
454 on the command line. */
455 while (name[0] == '.' && name[1] == '/' && name[2] != '\0')
459 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
465 /* It was all slashes! Move back to the dot and truncate
466 it after the first slash, so it becomes just "./". */
469 while (name[0] != '.');
473 return enter_file (xstrdup (name));
476 /* Toggle -d on receipt of SIGUSR1. */
479 debug_signal_handler (sig)
482 debug_flag = ! debug_flag;
487 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
488 * exception and print it to stderr instead.
490 * If debug_flag not set, just print a simple message and exit.
491 * If debug_flag set, print a more verbose message.
492 * If compiled for DEBUG, let exception pass through to GUI so that
493 * debuggers can attach.
496 handle_runtime_exceptions( struct _EXCEPTION_POINTERS *exinfo )
498 PEXCEPTION_RECORD exrec = exinfo->ExceptionRecord;
499 LPSTR cmdline = GetCommandLine();
500 LPSTR prg = strtok(cmdline, " ");
504 LPTSTR lpszStrings[1];
509 sprintf(errmsg, _("%s: Interrupt/Exception caught "), prg);
510 sprintf(&errmsg[strlen(errmsg)],
511 "(code = 0x%x, addr = 0x%x)\r\n",
512 exrec->ExceptionCode, exrec->ExceptionAddress);
513 fprintf(stderr, errmsg);
518 _("\r\nUnhandled exception filter called from program %s\r\n"), prg);
519 sprintf(&errmsg[strlen(errmsg)], "ExceptionCode = %x\r\n",
520 exrec->ExceptionCode);
521 sprintf(&errmsg[strlen(errmsg)], "ExceptionFlags = %x\r\n",
522 exrec->ExceptionFlags);
523 sprintf(&errmsg[strlen(errmsg)], "ExceptionAddress = %x\r\n",
524 exrec->ExceptionAddress);
526 if (exrec->ExceptionCode == EXCEPTION_ACCESS_VIOLATION
527 && exrec->NumberParameters >= 2)
528 sprintf(&errmsg[strlen(errmsg)],
529 _("Access violation: %s operation at address %x\r\n"),
530 exrec->ExceptionInformation[0] ? _("write"): _("read"),
531 exrec->ExceptionInformation[1]);
533 /* turn this on if we want to put stuff in the event log too */
535 hEventSource = RegisterEventSource(NULL, "GNU Make");
536 lpszStrings[0] = errmsg;
538 if (hEventSource != NULL)
540 ReportEvent(hEventSource, /* handle of event source */
541 EVENTLOG_ERROR_TYPE, /* event type */
542 0, /* event category */
544 NULL, /* current user's SID */
545 1, /* strings in lpszStrings */
546 0, /* no bytes of raw data */
547 lpszStrings, /* array of error strings */
548 NULL); /* no raw data */
550 (VOID) DeregisterEventSource(hEventSource);
554 /* Write the error to stderr too */
555 fprintf(stderr, errmsg);
558 return EXCEPTION_CONTINUE_SEARCH;
561 return (255); /* not reached */
566 * On WIN32 systems we don't have the luxury of a /bin directory that
567 * is mapped globally to every drive mounted to the system. Since make could
568 * be invoked from any drive, and we don't want to propogate /bin/sh
569 * to every single drive. Allow ourselves a chance to search for
570 * a value for default shell here (if the default path does not exist).
574 find_and_set_default_shell(char *token)
579 extern char *default_shell;
582 search_token = default_shell;
584 search_token = token;
586 if (!no_default_sh_exe &&
587 (token == NULL || !strcmp(search_token, default_shell))) {
588 /* no new information, path already set or known */
590 } else if (file_exists_p(search_token)) {
591 /* search token path was found */
592 sprintf(sh_path, "%s", search_token);
593 default_shell = xstrdup(w32ify(sh_path,0));
595 printf(_("find_and_set_shell setting default_shell = %s\n"), default_shell);
599 struct variable *v = lookup_variable ("Path", 4);
602 * Search Path for shell
608 ep = strchr(p, PATH_SEPARATOR_CHAR);
613 if (dir_file_exists_p(p, search_token)) {
614 sprintf(sh_path, "%s/%s", p, search_token);
615 default_shell = xstrdup(w32ify(sh_path,0));
617 *ep = PATH_SEPARATOR_CHAR;
622 *ep = PATH_SEPARATOR_CHAR;
626 ep = strchr(p, PATH_SEPARATOR_CHAR);
629 /* be sure to check last element of Path */
630 if (p && *p && dir_file_exists_p(p, search_token)) {
631 sprintf(sh_path, "%s/%s", p, search_token);
632 default_shell = xstrdup(w32ify(sh_path,0));
636 if (debug_flag && sh_found)
637 printf(_("find_and_set_shell path search set default_shell = %s\n"), default_shell);
642 if (!unixy_shell && sh_found &&
643 (strstr(default_shell, "sh") || strstr(default_shell, "SH"))) {
645 batch_mode_shell = 0;
648 #ifdef BATCH_MODE_ONLY_SHELL
649 batch_mode_shell = 1;
654 #endif /* WINDOWS32 */
659 msdos_return_to_initial_directory ()
661 if (directory_before_chdir)
662 chdir (directory_before_chdir);
668 main (argc, argv, envp)
673 int main (int argc, char ** argv)
676 static char *stdin_nm = 0;
677 register struct file *f;
678 register unsigned int i;
680 struct dep *read_makefiles;
681 PATH_VAR (current_directory);
683 char *unix_path = NULL;
684 char *windows32_path = NULL;
686 SetUnhandledExceptionFilter(handle_runtime_exceptions);
688 /* start off assuming we have no shell */
690 no_default_sh_exe = 1;
693 default_goal_file = 0;
696 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
697 /* Request the most powerful version of `system', to
698 make up for the dumb default shell. */
699 __system_flags = (__system_redirect
701 | __system_allow_multiple_cmds
702 | __system_allow_long_cmds
703 | __system_handle_null_commands
704 | __system_emulate_chdir);
708 #if !defined (HAVE_STRSIGNAL) && !defined (HAVE_SYS_SIGLIST)
713 sigemptyset (&fatal_signal_set);
714 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
716 #ifdef HAVE_SIGSETMASK
717 fatal_signal_mask = 0;
718 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
724 #define FATAL_SIG(sig) \
725 if (signal ((sig), fatal_error_signal) == SIG_IGN) \
726 (void) signal ((sig), SIG_IGN); \
740 FATAL_SIG (SIGDANGER);
751 /* Do not ignore the child-death signal. This must be done before
752 any children could possibly be created; otherwise, the wait
753 functions won't work on systems with the SVR4 ECHILD brain
754 damage, if our invoker is ignoring this signal. */
756 #ifdef HAVE_WAIT_NOHANG
758 (void) signal (SIGCHLD, SIG_DFL);
760 # if defined SIGCLD && SIGCLD != SIGCHLD
761 (void) signal (SIGCLD, SIG_DFL);
765 /* Make sure stdout is line-buffered. */
767 #ifdef HAVE_SETLINEBUF
770 #ifndef SETVBUF_REVERSED
771 setvbuf (stdout, (char *) 0, _IOLBF, BUFSIZ);
772 #else /* setvbuf not reversed. */
773 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
774 setvbuf (stdout, _IOLBF, xmalloc (BUFSIZ), BUFSIZ);
775 #endif /* setvbuf reversed. */
776 #endif /* setlinebuf missing. */
778 /* Figure out where this program lives. */
782 if (argv[0][0] == '\0')
787 program = rindex (argv[0], ']');
789 program = rindex (argv[0], '/');
793 program = rindex (argv[0], '\\');
796 /* Some weird environments might pass us argv[0] with
797 both kinds of slashes; we must find the rightmost. */
798 char *p = rindex (argv[0], '\\');
799 if (p && p > program)
802 if (program == 0 && argv[0][1] == ':')
803 program = argv[0] + 1;
811 /* Set up to access user data (files). */
814 /* Figure out where we are. */
817 if (getcwd_fs (current_directory, GET_PATH_MAX) == 0)
819 if (getcwd (current_directory, GET_PATH_MAX) == 0)
823 perror_with_name ("getcwd: ", "");
825 error (NILF, "getwd: %s", current_directory);
827 current_directory[0] = '\0';
828 directory_before_chdir = 0;
831 directory_before_chdir = xstrdup (current_directory);
833 /* Make sure we will return to the initial directory, come what may. */
834 atexit (msdos_return_to_initial_directory);
837 /* Read in variables from the environment. It is important that this be
838 done before $(MAKE) is figured out so its definitions will not be
839 from the environment. */
842 for (i = 0; envp[i] != 0; ++i)
845 register char *ep = envp[i];
847 /* by default, everything gets defined and exported */
853 if (!unix_path && strneq(envp[i], "PATH=", 5))
855 else if (!windows32_path && !strnicmp(envp[i], "Path=", 5)) {
856 do_not_define = 1; /* it gets defined after loop exits */
857 windows32_path = ep+1;
860 /* The result of pointer arithmetic is cast to unsigned int for
861 machines where ptrdiff_t is a different size that doesn't widen
864 define_variable (envp[i], (unsigned int) (ep - envp[i]),
866 /* Force exportation of every variable culled from the environment.
867 We used to rely on target_environment's v_default code to do this.
868 But that does not work for the case where an environment variable
869 is redefined in a makefile with `override'; it should then still
870 be exported, because it was originally in the environment. */
875 * Make sure that this particular spelling of 'Path' is available
878 define_variable("Path", 4, windows32_path, o_env, 1)->export = v_export;
880 define_variable("Path", 4, unix_path, o_env, 1)->export = v_export;
882 define_variable("Path", 4, "", o_env, 1)->export = v_export;
885 * PATH defaults to Path iff PATH not found and Path is found.
887 if (!unix_path && windows32_path)
888 define_variable("PATH", 4, windows32_path, o_env, 1)->export = v_export;
890 #else /* For Amiga, read the ENV: device, ignoring all dirs */
895 __aligned struct FileInfoBlock fib;
897 env = Lock ("ENV:", ACCESS_READ);
900 old = CurrentDir (DupLock(env));
903 while (ExNext (env, &fib))
905 if (fib.fib_DirEntryType < 0) /* File */
907 /* Define an empty variable. It will be filled in
908 variable_lookup(). Makes startup quite a bit
910 define_variable (fib.fib_FileName,
911 strlen (fib.fib_FileName),
912 "", o_env, 1)->export = v_export;
916 UnLock(CurrentDir(old));
921 /* Decode the switches. */
923 decode_env_switches ("MAKEFLAGS", 9);
925 /* People write things like:
926 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
927 and we set the -p, -i and -e switches. Doesn't seem quite right. */
928 decode_env_switches ("MFLAGS", 6);
930 decode_switches (argc, argv, 0);
933 fprintf(stderr, "%s (pid = %d)\n", argv[0], GetCurrentProcessId());
934 fprintf(stderr, _("%s is suspending for 30 seconds..."), argv[0]);
936 fprintf(stderr, _("done sleep(30). Continuing.\n"));
940 /* Print version information. */
942 if (print_version_flag || print_data_base_flag || debug_flag)
945 /* `make --version' is supposed to just print the version and exit. */
946 if (print_version_flag)
950 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
951 (If it is a relative pathname with a slash, prepend our directory name
952 so the result will run the same program regardless of the current dir.
953 If it is a name with no slash, we can only hope that PATH did not
954 find it in the current directory.) */
957 * Convert from backslashes to forward slashes for
958 * programs like sh which don't like them. Shouldn't
959 * matter if the path is one way or the other for
962 if (strpbrk(argv[0], "/:\\") ||
963 strstr(argv[0], "..") ||
964 strneq(argv[0], "//", 2))
965 argv[0] = xstrdup(w32ify(argv[0],1));
966 #else /* WINDOWS32 */
968 if (strchr (argv[0], '\\'))
972 argv[0] = xstrdup (argv[0]);
973 for (p = argv[0]; *p; p++)
977 /* If argv[0] is not in absolute form, prepend the current
978 directory. This can happen when Make is invoked by another DJGPP
979 program that uses a non-absolute name. */
980 if (current_directory[0] != '\0'
982 && (argv[0][0] != '/' && (argv[0][0] == '\0' || argv[0][1] != ':')))
983 argv[0] = concat (current_directory, "/", argv[0]);
984 #else /* !__MSDOS__ */
985 if (current_directory[0] != '\0'
986 && argv[0] != 0 && argv[0][0] != '/' && index (argv[0], '/') != 0)
987 argv[0] = concat (current_directory, "/", argv[0]);
988 #endif /* !__MSDOS__ */
989 #endif /* WINDOWS32 */
992 /* The extra indirection through $(MAKE_COMMAND) is done
993 for hysterical raisins. */
994 (void) define_variable ("MAKE_COMMAND", 12, argv[0], o_default, 0);
995 (void) define_variable ("MAKE", 4, "$(MAKE_COMMAND)", o_default, 1);
997 if (command_variables != 0)
999 struct command_variable *cv;
1001 unsigned int len = 0;
1004 /* Figure out how much space will be taken up by the command-line
1005 variable definitions. */
1006 for (cv = command_variables; cv != 0; cv = cv->next)
1009 len += 2 * strlen (v->name);
1013 len += 3 * strlen (v->value);
1016 /* Now allocate a buffer big enough and fill it. */
1017 p = value = (char *) alloca (len);
1018 for (cv = command_variables; cv != 0; cv = cv->next)
1021 p = quote_as_word (p, v->name, 0);
1025 p = quote_as_word (p, v->value, 0);
1028 p[-1] = '\0'; /* Kill the final space and terminate. */
1030 /* Define an unchangeable variable with a name that no POSIX.2
1031 makefile could validly use for its own variable. */
1032 (void) define_variable ("-*-command-variables-*-", 23,
1033 value, o_automatic, 0);
1035 /* Define the variable; this will not override any user definition.
1036 Normally a reference to this variable is written into the value of
1037 MAKEFLAGS, allowing the user to override this value to affect the
1038 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1039 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1040 a reference to this hidden variable is written instead. */
1041 (void) define_variable ("MAKEOVERRIDES", 13,
1042 "${-*-command-variables-*-}", o_env, 1);
1045 /* If there were -C flags, move ourselves about. */
1046 if (directories != 0)
1047 for (i = 0; directories->list[i] != 0; ++i)
1049 char *dir = directories->list[i];
1052 char *expanded = tilde_expand (dir);
1056 if (chdir (dir) < 0)
1057 pfatal_with_name (dir);
1058 if (dir != directories->list[i])
1064 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1065 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1067 * The functions in dir.c can incorrectly cache information for "."
1068 * before we have changed directory and this can cause file
1069 * lookups to fail because the current directory (.) was pointing
1070 * at the wrong place when it was first evaluated.
1072 no_default_sh_exe = !find_and_set_default_shell(NULL);
1074 #endif /* WINDOWS32 */
1075 /* Figure out the level of recursion. */
1077 struct variable *v = lookup_variable ("MAKELEVEL", 9);
1078 if (v != 0 && *v->value != '\0' && *v->value != '-')
1079 makelevel = (unsigned int) atoi (v->value);
1084 /* Except under -s, always do -w in sub-makes and under -C. */
1085 if (!silent_flag && (directories != 0 || makelevel > 0))
1086 print_directory_flag = 1;
1088 /* Let the user disable that with --no-print-directory. */
1089 if (inhibit_print_directory_flag)
1090 print_directory_flag = 0;
1092 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1093 if (no_builtin_variables_flag)
1094 no_builtin_rules_flag = 1;
1096 /* Construct the list of include directories to search. */
1098 construct_include_path (include_directories == 0 ? (char **) 0
1099 : include_directories->list);
1101 /* Figure out where we are now, after chdir'ing. */
1102 if (directories == 0)
1103 /* We didn't move, so we're still in the same place. */
1104 starting_directory = current_directory;
1108 if (getcwd_fs (current_directory, GET_PATH_MAX) == 0)
1110 if (getcwd (current_directory, GET_PATH_MAX) == 0)
1114 perror_with_name ("getcwd: ", "");
1116 error (NILF, "getwd: %s", current_directory);
1118 starting_directory = 0;
1121 starting_directory = current_directory;
1124 (void) define_variable ("CURDIR", 6, current_directory, o_default, 0);
1126 /* Read any stdin makefiles into temporary files. */
1130 register unsigned int i;
1131 for (i = 0; i < makefiles->idx; ++i)
1132 if (makefiles->list[i][0] == '-' && makefiles->list[i][1] == '\0')
1134 /* This makefile is standard input. Since we may re-exec
1135 and thus re-read the makefiles, we read standard input
1136 into a temporary file and read from that. */
1139 /* Make a unique filename. */
1143 static char name[] = "sys$scratch:GmXXXXXX";
1145 static char name[] = "/tmp/GmXXXXXX";
1147 (void) mktemp (name);
1149 static char name[L_tmpnam];
1150 (void) tmpnam (name);
1154 fatal (NILF, _("Makefile from standard input specified twice."));
1156 outfile = fopen (name, "w");
1158 pfatal_with_name (_("fopen (temporary file)"));
1159 while (!feof (stdin))
1162 unsigned int n = fread (buf, 1, sizeof (buf), stdin);
1163 if (n > 0 && fwrite (buf, 1, n, outfile) != n)
1164 pfatal_with_name (_("fwrite (temporary file)"));
1166 (void) fclose (outfile);
1168 /* Replace the name that read_all_makefiles will
1169 see with the name of the temporary file. */
1172 /* SGI compiler requires alloca's result be assigned simply. */
1173 temp = (char *) alloca (sizeof (name));
1174 bcopy (name, temp, sizeof (name));
1175 makefiles->list[i] = temp;
1178 /* Make sure the temporary file will not be remade. */
1179 stdin_nm = savestring (name, sizeof (name) -1);
1180 f = enter_file (stdin_nm);
1182 f->update_status = 0;
1183 f->command_state = cs_finished;
1184 /* Can't be intermediate, or it'll be removed too early for
1186 f->intermediate = 0;
1191 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1192 /* Set up to handle children dying. This must be done before
1193 reading in the makefiles so that `shell' function calls will work.
1195 If we don't have a hanging wait we have to fall back to old, broken
1196 functionality here and rely on the signal handler and counting
1199 If we're using the jobs pipe we need a signal handler so that
1200 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1201 jobserver pipe in job.c if we're waiting for a token.
1203 If none of these are true, we don't need a signal handler at all. */
1205 extern RETSIGTYPE child_handler PARAMS ((int sig));
1207 # if defined HAVE_SIGACTION
1208 struct sigaction sa;
1210 bzero ((char *)&sa, sizeof (struct sigaction));
1211 sa.sa_handler = child_handler;
1212 # if defined SA_INTERRUPT
1213 /* This is supposed to be the default, but what the heck... */
1214 sa.sa_flags = SA_INTERRUPT;
1216 # define HANDLESIG(s) sigaction (s, &sa, NULL)
1218 # define HANDLESIG(s) signal (s, child_handler)
1221 /* OK, now actually install the handlers. */
1222 # if defined SIGCHLD
1223 (void) HANDLESIG (SIGCHLD);
1225 # if defined SIGCLD && SIGCLD != SIGCHLD
1226 (void) HANDLESIG (SIGCLD);
1231 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1233 (void) signal (SIGUSR1, debug_signal_handler);
1236 /* Define the initial list of suffixes for old-style rules. */
1238 set_default_suffixes ();
1240 /* Define the file rules for the built-in suffix rules. These will later
1241 be converted into pattern rules. We used to do this in
1242 install_default_implicit_rules, but since that happens after reading
1243 makefiles, it results in the built-in pattern rules taking precedence
1244 over makefile-specified suffix rules, which is wrong. */
1246 install_default_suffix_rules ();
1248 /* Define some internal and special variables. */
1250 define_automatic_variables ();
1252 /* Set up the MAKEFLAGS and MFLAGS variables
1253 so makefiles can look at them. */
1255 define_makeflags (0, 0);
1257 /* Define the default variables. */
1258 define_default_variables ();
1260 /* Read all the makefiles. */
1262 default_file = enter_file (".DEFAULT");
1265 = read_all_makefiles (makefiles == 0 ? (char **) 0 : makefiles->list);
1268 /* look one last time after reading all Makefiles */
1269 if (no_default_sh_exe)
1270 no_default_sh_exe = !find_and_set_default_shell(NULL);
1272 if (no_default_sh_exe && job_slots != 1) {
1273 error (NILF, _("Do not specify -j or --jobs if sh.exe is not available."));
1274 error (NILF, _("Resetting make for single job mode."));
1277 #endif /* WINDOWS32 */
1280 /* We need to know what kind of shell we will be using. */
1282 extern int _is_unixy_shell (const char *_path);
1283 struct variable *shv = lookup_variable ("SHELL", 5);
1284 extern int unixy_shell;
1285 extern char *default_shell;
1287 if (shv && *shv->value)
1289 char *shell_path = recursively_expand(shv);
1291 if (shell_path && _is_unixy_shell (shell_path))
1296 default_shell = shell_path;
1299 #endif /* __MSDOS__ */
1301 /* Decode switches again, in case the variables were set by the makefile. */
1302 decode_env_switches ("MAKEFLAGS", 9);
1304 decode_env_switches ("MFLAGS", 6);
1311 _("Parallel jobs (-j) are not supported on this platform."));
1312 error (NILF, _("Resetting to single job (-j1) mode."));
1317 #ifdef MAKE_JOBSERVER
1318 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1324 for (i=1; i < jobserver_fds->idx; ++i)
1325 if (!streq (jobserver_fds->list[0], jobserver_fds->list[i]))
1326 fatal (NILF, _("internal error: multiple --jobserver-fds options"));
1328 /* Now parse the fds string and make sure it has the proper format. */
1330 cp = jobserver_fds->list[0];
1332 if (sscanf (cp, "%d,%d", &job_fds[0], &job_fds[1]) != 2)
1334 _("internal error: invalid --jobserver-fds string `%s'"), cp);
1336 /* The combination of a pipe + !job_slots means we're using the
1337 jobserver. If !job_slots and we don't have a pipe, we can start
1338 infinite jobs. If we see both a pipe and job_slots >0 that means the
1339 user set -j explicitly. This is broken; in this case obey the user
1340 (ignore the jobserver pipe for this make) but print a message. */
1344 _("warning: -jN forced in submake: disabling jobserver mode."));
1346 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1347 handler. If this fails with EBADF, the parent has closed the pipe
1348 on us because it didn't think we were a submake. If so, print a
1349 warning then default to -j1. */
1351 else if ((job_rfd = dup (job_fds[0])) < 0)
1354 pfatal_with_name (_("dup jobserver"));
1357 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1365 job_fds[0] = job_fds[1] = -1;
1366 free (jobserver_fds->list);
1367 free (jobserver_fds);
1372 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1373 Set up the pipe and install the fds option for our children. */
1379 if (pipe (job_fds) < 0 || (job_rfd = dup (job_fds[0])) < 0)
1380 pfatal_with_name (_("creating jobs pipe"));
1382 /* Every make assumes that it always has one job it can run. For the
1383 submakes it's the token they were given by their parent. For the
1384 top make, we just subtract one from the number the user wants. We
1385 want job_slots to be 0 to indicate we're using the jobserver. */
1388 while (write (job_fds[1], &c, 1) != 1)
1390 pfatal_with_name (_("init jobserver pipe"));
1392 /* Fill in the jobserver_fds struct for our children. */
1394 jobserver_fds = (struct stringlist *)
1395 xmalloc (sizeof (struct stringlist));
1396 jobserver_fds->list = (char **) xmalloc (sizeof (char *));
1397 jobserver_fds->list[0] = xmalloc ((sizeof ("1024")*2)+1);
1399 sprintf (jobserver_fds->list[0], "%d,%d", job_fds[0], job_fds[1]);
1400 jobserver_fds->idx = 1;
1401 jobserver_fds->max = 1;
1405 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1407 define_makeflags (1, 0);
1409 /* Make each `struct dep' point at the `struct file' for the file
1410 depended on. Also do magic for special targets. */
1414 /* Convert old-style suffix rules to pattern rules. It is important to
1415 do this before installing the built-in pattern rules below, so that
1416 makefile-specified suffix rules take precedence over built-in pattern
1419 convert_to_pattern ();
1421 /* Install the default implicit pattern rules.
1422 This used to be done before reading the makefiles.
1423 But in that case, built-in pattern rules were in the chain
1424 before user-defined ones, so they matched first. */
1426 install_default_implicit_rules ();
1428 /* Compute implicit rule limits. */
1430 count_implicit_rule_limits ();
1432 /* Construct the listings of directories in VPATH lists. */
1434 build_vpath_lists ();
1436 /* Mark files given with -o flags as very old (00:00:01.00 Jan 1, 1970)
1437 and as having been updated already, and files given with -W flags as
1438 brand new (time-stamp as far as possible into the future). */
1441 for (p = old_files->list; *p != 0; ++p)
1443 f = enter_command_line_file (*p);
1444 f->last_mtime = f->mtime_before_update = (FILE_TIMESTAMP) 1;
1446 f->update_status = 0;
1447 f->command_state = cs_finished;
1452 for (p = new_files->list; *p != 0; ++p)
1454 f = enter_command_line_file (*p);
1455 f->last_mtime = f->mtime_before_update = NEW_MTIME;
1459 /* Initialize the remote job module. */
1462 if (read_makefiles != 0)
1464 /* Update any makefiles if necessary. */
1466 FILE_TIMESTAMP *makefile_mtimes = 0;
1467 unsigned int mm_idx = 0;
1468 char **nargv = argv;
1472 puts (_("Updating makefiles...."));
1474 /* Remove any makefiles we don't want to try to update.
1475 Also record the current modtimes so we can compare them later. */
1477 register struct dep *d, *last;
1482 register struct file *f = d->file;
1483 if (f->double_colon)
1484 for (f = f->double_colon; f != NULL; f = f->prev)
1486 if (f->deps == 0 && f->cmds != 0)
1488 /* This makefile is a :: target with commands, but
1489 no dependencies. So, it will always be remade.
1490 This might well cause an infinite loop, so don't
1491 try to remake it. (This will only happen if
1492 your makefiles are written exceptionally
1493 stupidly; but if you work for Athena, that's how
1494 you write your makefiles.) */
1497 printf (_("Makefile `%s' might loop; not remaking it.\n"),
1501 read_makefiles = d->next;
1503 last->next = d->next;
1505 /* Free the storage. */
1508 d = last == 0 ? read_makefiles : last->next;
1513 if (f == NULL || !f->double_colon)
1515 makefile_mtimes = (FILE_TIMESTAMP *)
1516 xrealloc ((char *) makefile_mtimes,
1517 (mm_idx + 1) * sizeof (FILE_TIMESTAMP));
1518 makefile_mtimes[mm_idx++] = file_mtime_no_search (d->file);
1525 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1526 define_makeflags (1, 1);
1528 switch (update_goal_chain (read_makefiles, 1))
1532 #define BOGUS_UPDATE_STATUS 0
1533 assert (BOGUS_UPDATE_STATUS);
1541 /* Failed to update. Figure out if we care. */
1543 /* Nonzero if any makefile was successfully remade. */
1545 /* Nonzero if any makefile we care about failed
1546 in updating or could not be found at all. */
1548 register unsigned int i;
1551 for (i = 0, d = read_makefiles; d != 0; ++i, d = d->next)
1553 /* Reset the considered flag; we may need to look at the file
1554 again to print an error. */
1555 d->file->considered = 0;
1557 if (d->file->updated)
1559 /* This makefile was updated. */
1560 if (d->file->update_status == 0)
1562 /* It was successfully updated. */
1563 any_remade |= (file_mtime_no_search (d->file)
1564 != makefile_mtimes[i]);
1566 else if (! (d->changed & RM_DONTCARE))
1568 FILE_TIMESTAMP mtime;
1569 /* The update failed and this makefile was not
1570 from the MAKEFILES variable, so we care. */
1571 error (NILF, _("Failed to remake makefile `%s'."),
1573 mtime = file_mtime_no_search (d->file);
1574 any_remade |= (mtime != (FILE_TIMESTAMP) -1
1575 && mtime != makefile_mtimes[i]);
1579 /* This makefile was not found at all. */
1580 if (! (d->changed & RM_DONTCARE))
1582 /* This is a makefile we care about. See how much. */
1583 if (d->changed & RM_INCLUDED)
1584 /* An included makefile. We don't need
1585 to die, but we do want to complain. */
1587 _("Included makefile `%s' was not found."),
1591 /* A normal makefile. We must die later. */
1592 error (NILF, _("Makefile `%s' was not found"),
1598 /* Reset this to empty so we get the right error message below. */
1610 /* Updated successfully. Re-exec ourselves. */
1612 remove_intermediates (0);
1614 if (print_data_base_flag)
1617 log_working_directory (0);
1621 /* These names might have changed. */
1622 register unsigned int i, j = 0;
1623 for (i = 1; i < argc; ++i)
1624 if (strneq (argv[i], "-f", 2)) /* XXX */
1626 char *p = &argv[i][2];
1628 argv[++i] = makefiles->list[j];
1630 argv[i] = concat ("-f", makefiles->list[j], "");
1635 /* Add -o option for the stdin temporary file, if necessary. */
1638 nargv = (char **) xmalloc ((nargc + 2) * sizeof (char *));
1639 bcopy ((char *) argv, (char *) nargv, argc * sizeof (char *));
1640 nargv[nargc++] = concat ("-o", stdin_nm, "");
1644 if (directories != 0 && directories->idx > 0)
1647 if (directory_before_chdir != 0)
1649 if (chdir (directory_before_chdir) < 0)
1651 perror_with_name ("chdir", "");
1660 fatal (NILF, _("Couldn't change back to original directory."));
1664 for (p = environ; *p != 0; ++p)
1665 if (strneq (*p, "MAKELEVEL=", 10))
1667 /* The SGI compiler apparently can't understand
1668 the concept of storing the result of a function
1669 in something other than a local variable. */
1671 sgi_loses = (char *) alloca (40);
1673 sprintf (*p, "MAKELEVEL=%u", makelevel);
1681 len = GetVar ("MAKELEVEL", buffer, sizeof (buffer), GVF_GLOBAL_ONLY);
1685 sprintf (buffer, "%u", makelevel);
1686 SetVar ("MAKELEVEL", buffer, -1, GVF_GLOBAL_ONLY);
1694 fputs (_("Re-executing:"), stdout);
1695 for (p = nargv; *p != 0; ++p)
1703 /* Close the dup'd jobserver pipe if we opened one. */
1708 exec_command (nargv, environ);
1710 exec_command (nargv);
1717 /* Set up `MAKEFLAGS' again for the normal targets. */
1718 define_makeflags (1, 0);
1720 /* If there is a temp file from reading a makefile from stdin, get rid of
1722 if (stdin_nm && unlink (stdin_nm) < 0 && errno != ENOENT)
1723 perror_with_name (_("unlink (temporary file): "), stdin_nm);
1728 /* If there were no command-line goals, use the default. */
1731 if (default_goal_file != 0)
1733 goals = (struct dep *) xmalloc (sizeof (struct dep));
1736 goals->file = default_goal_file;
1744 if (read_makefiles == 0)
1745 fatal (NILF, _("No targets specified and no makefile found"));
1747 fatal (NILF, _("No targets"));
1750 /* Update the goals. */
1753 puts (_("Updating goal targets...."));
1755 switch (update_goal_chain (goals, 0))
1758 /* Nothing happened. */
1760 /* Updated successfully. */
1761 status = EXIT_SUCCESS;
1764 /* Updating failed. POSIX.2 specifies exit status >1 for this;
1765 but in VMS, there is only success and failure. */
1766 status = EXIT_FAILURE ? 2 : EXIT_FAILURE;
1769 /* We are under -q and would run some commands. */
1770 status = EXIT_FAILURE;
1776 /* If we detected some clock skew, generate one last warning */
1777 if (clock_skew_detected)
1778 error (NILF, _("*** Warning: Clock skew detected. Your build may be incomplete."));
1787 /* Parsing of arguments, decoding of switches. */
1789 static char options[1 + sizeof (switches) / sizeof (switches[0]) * 3];
1790 static struct option long_options[(sizeof (switches) / sizeof (switches[0])) +
1791 (sizeof (long_option_aliases) /
1792 sizeof (long_option_aliases[0]))];
1794 /* Fill in the string and vector for getopt. */
1800 register unsigned int i;
1802 if (options[0] != '\0')
1808 /* Return switch and non-switch args in order, regardless of
1809 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
1812 for (i = 0; switches[i].c != '\0'; ++i)
1814 long_options[i].name = (switches[i].long_name == 0 ? "" :
1815 switches[i].long_name);
1816 long_options[i].flag = 0;
1817 long_options[i].val = switches[i].c;
1818 if (short_option (switches[i].c))
1819 *p++ = switches[i].c;
1820 switch (switches[i].type)
1825 long_options[i].has_arg = no_argument;
1831 if (short_option (switches[i].c))
1833 if (switches[i].noarg_value != 0)
1835 if (short_option (switches[i].c))
1837 long_options[i].has_arg = optional_argument;
1840 long_options[i].has_arg = required_argument;
1845 for (c = 0; c < (sizeof (long_option_aliases) /
1846 sizeof (long_option_aliases[0]));
1848 long_options[i++] = long_option_aliases[c];
1849 long_options[i].name = 0;
1853 handle_non_switch_argument (arg, env)
1857 /* Non-option argument. It might be a variable definition. */
1859 if (arg[0] == '-' && arg[1] == '\0')
1860 /* Ignore plain `-' for compatibility. */
1862 v = try_variable_definition (0, arg, o_command);
1865 /* It is indeed a variable definition. Record a pointer to
1866 the variable for later use in define_makeflags. */
1867 struct command_variable *cv
1868 = (struct command_variable *) xmalloc (sizeof (*cv));
1870 cv->next = command_variables;
1871 command_variables = cv;
1875 /* Not an option or variable definition; it must be a goal
1876 target! Enter it as a file and add it to the dep chain of
1878 struct file *f = enter_command_line_file (arg);
1883 goals = (struct dep *) xmalloc (sizeof (struct dep));
1888 lastgoal->next = (struct dep *) xmalloc (sizeof (struct dep));
1889 lastgoal = lastgoal->next;
1895 /* Add this target name to the MAKECMDGOALS variable. */
1899 v = lookup_variable ("MAKECMDGOALS", 12);
1904 /* Paste the old and new values together */
1905 unsigned int oldlen, newlen;
1907 oldlen = strlen (v->value);
1908 newlen = strlen (f->name);
1909 value = (char *) alloca (oldlen + 1 + newlen + 1);
1910 bcopy (v->value, value, oldlen);
1911 value[oldlen] = ' ';
1912 bcopy (f->name, &value[oldlen + 1], newlen + 1);
1914 define_variable ("MAKECMDGOALS", 12, value, o_default, 0);
1919 /* Print a nice usage method. */
1925 register const struct command_switch *cs;
1928 if (print_version_flag)
1931 usageto = bad ? stderr : stdout;
1933 fprintf (usageto, _("Usage: %s [options] [target] ...\n"), program);
1935 fputs (_("Options:\n"), usageto);
1936 for (cs = switches; cs->c != '\0'; ++cs)
1938 char buf[1024], shortarg[50], longarg[50], *p;
1940 if (!cs->description || cs->description[0] == '-')
1943 switch (long_options[cs - switches].has_arg)
1946 shortarg[0] = longarg[0] = '\0';
1948 case required_argument:
1949 sprintf (longarg, "=%s", cs->argdesc);
1950 sprintf (shortarg, " %s", cs->argdesc);
1952 case optional_argument:
1953 sprintf (longarg, "[=%s]", cs->argdesc);
1954 sprintf (shortarg, " [%s]", cs->argdesc);
1960 if (short_option (cs->c))
1962 sprintf (buf, " -%c%s", cs->c, shortarg);
1965 if (cs->long_name != 0)
1968 sprintf (p, "%s--%s%s",
1969 !short_option (cs->c) ? " " : ", ",
1970 cs->long_name, longarg);
1972 for (i = 0; i < (sizeof (long_option_aliases) /
1973 sizeof (long_option_aliases[0]));
1975 if (long_option_aliases[i].val == cs->c)
1977 sprintf (p, ", --%s%s",
1978 long_option_aliases[i].name, longarg);
1983 const struct command_switch *ncs = cs;
1984 while ((++ncs)->c != '\0')
1985 if (ncs->description
1986 && ncs->description[0] == '-'
1987 && ncs->description[1] == cs->c)
1989 /* This is another switch that does the same
1990 one as the one we are processing. We want
1991 to list them all together on one line. */
1992 sprintf (p, ", -%c%s", ncs->c, shortarg);
1994 if (ncs->long_name != 0)
1996 sprintf (p, ", --%s%s", ncs->long_name, longarg);
2002 if (p - buf > DESCRIPTION_COLUMN - 2)
2003 /* The list of option names is too long to fit on the same
2004 line with the description, leaving at least two spaces.
2005 Print it on its own line instead. */
2007 fprintf (usageto, "%s\n", buf);
2011 fprintf (usageto, "%*s%s.\n",
2012 - DESCRIPTION_COLUMN,
2013 buf, cs->description);
2017 /* Decode switches from ARGC and ARGV.
2018 They came from the environment if ENV is nonzero. */
2021 decode_switches (argc, argv, env)
2027 register const struct command_switch *cs;
2028 register struct stringlist *sl;
2031 /* getopt does most of the parsing for us.
2032 First, get its vectors set up. */
2036 /* Let getopt produce error messages for the command line,
2037 but not for options from the environment. */
2039 /* Reset getopt's state. */
2042 while (optind < argc)
2044 /* Parse the next argument. */
2045 c = getopt_long (argc, argv, options, long_options, (int *) 0);
2047 /* End of arguments, or "--" marker seen. */
2050 /* An argument not starting with a dash. */
2051 handle_non_switch_argument (optarg, env);
2053 /* Bad option. We will print a usage message and die later.
2054 But continue to parse the other options so the user can
2055 see all he did wrong. */
2058 for (cs = switches; cs->c != '\0'; ++cs)
2061 /* Whether or not we will actually do anything with
2062 this switch. We test this individually inside the
2063 switch below rather than just once outside it, so that
2064 options which are to be ignored still consume args. */
2065 int doit = !env || cs->env;
2078 *(int *) cs->value_ptr = cs->type == flag;
2086 optarg = cs->noarg_value;
2088 sl = *(struct stringlist **) cs->value_ptr;
2091 sl = (struct stringlist *)
2092 xmalloc (sizeof (struct stringlist));
2095 sl->list = (char **) xmalloc (5 * sizeof (char *));
2096 *(struct stringlist **) cs->value_ptr = sl;
2098 else if (sl->idx == sl->max - 1)
2101 sl->list = (char **)
2102 xrealloc ((char *) sl->list,
2103 sl->max * sizeof (char *));
2105 sl->list[sl->idx++] = optarg;
2106 sl->list[sl->idx] = 0;
2110 if (optarg == 0 && argc > optind
2111 && ISDIGIT (argv[optind][0]))
2112 optarg = argv[optind++];
2119 int i = atoi (optarg);
2123 error (NILF, _("the `-%c' option requires a positive integral argument"),
2128 *(unsigned int *) cs->value_ptr = i;
2131 *(unsigned int *) cs->value_ptr
2132 = *(unsigned int *) cs->noarg_value;
2137 if (optarg == 0 && optind < argc
2138 && (ISDIGIT (argv[optind][0]) || argv[optind][0] == '.'))
2139 optarg = argv[optind++];
2142 *(double *) cs->value_ptr
2143 = (optarg != 0 ? atof (optarg)
2144 : *(double *) cs->noarg_value);
2150 /* We've found the switch. Stop looking. */
2155 /* There are no more options according to getting getopt, but there may
2156 be some arguments left. Since we have asked for non-option arguments
2157 to be returned in order, this only happens when there is a "--"
2158 argument to prevent later arguments from being options. */
2159 while (optind < argc)
2160 handle_non_switch_argument (argv[optind++], env);
2163 if (!env && (bad || print_usage_flag))
2170 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2171 We do this by chopping the value into a vector of words, prepending a
2172 dash to the first word if it lacks one, and passing the vector to
2176 decode_env_switches (envar, len)
2180 char *varref = (char *) alloca (2 + len + 2);
2185 /* Get the variable's value. */
2188 bcopy (envar, &varref[2], len);
2189 varref[2 + len] = ')';
2190 varref[2 + len + 1] = '\0';
2191 value = variable_expand (varref);
2193 /* Skip whitespace, and check for an empty value. */
2194 value = next_token (value);
2195 len = strlen (value);
2199 /* Allocate a vector that is definitely big enough. */
2200 argv = (char **) alloca ((1 + len + 1) * sizeof (char *));
2202 /* Allocate a buffer to copy the value into while we split it into words
2203 and unquote it. We must use permanent storage for this because
2204 decode_switches may store pointers into the passed argument words. */
2205 p = (char *) xmalloc (2 * len);
2207 /* getopt will look at the arguments starting at ARGV[1].
2208 Prepend a spacer word. */
2212 while (*value != '\0')
2215 ++value; /* Skip the backslash. */
2216 else if (isblank (*value))
2218 /* End of the word. */
2223 while (isblank (*value));
2231 if (argv[1][0] != '-' && index (argv[1], '=') == 0)
2232 /* The first word doesn't start with a dash and isn't a variable
2233 definition. Add a dash and pass it along to decode_switches. We
2234 need permanent storage for this in case decode_switches saves
2235 pointers into the value. */
2236 argv[1] = concat ("-", argv[1], "");
2238 /* Parse those words. */
2239 decode_switches (argc, argv, 1);
2242 /* Quote the string IN so that it will be interpreted as a single word with
2243 no magic by the shell; if DOUBLE_DOLLARS is nonzero, also double dollar
2244 signs to avoid variable expansion in make itself. Write the result into
2245 OUT, returning the address of the next character to be written.
2246 Allocating space for OUT twice the length of IN (thrice if
2247 DOUBLE_DOLLARS is nonzero) is always sufficient. */
2250 quote_as_word (out, in, double_dollars)
2257 if (index ("^;'\"*?$<>(){}|&~`\\ \t\r\n\f\v", *in) != 0)
2259 if (index ("^;'\"*?[]$<>(){}|&~`\\ \t\r\n\f\v", *in) != 0)
2262 if (double_dollars && *in == '$')
2270 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2271 command switches. Include options with args if ALL is nonzero.
2272 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2275 define_makeflags (all, makefile)
2278 static const char ref[] = "$(MAKEOVERRIDES)";
2279 static const char posixref[] = "$(-*-command-variables-*-)";
2280 register const struct command_switch *cs;
2286 /* We will construct a linked list of `struct flag's describing
2287 all the flags which need to go in MAKEFLAGS. Then, once we
2288 know how many there are and their lengths, we can put them all
2289 together in a string. */
2294 const struct command_switch *cs;
2297 struct flag *flags = 0;
2298 unsigned int flagslen = 0;
2299 #define ADD_FLAG(ARG, LEN) \
2301 struct flag *new = (struct flag *) alloca (sizeof (struct flag)); \
2304 new->next = flags; \
2306 if (new->arg == 0) \
2307 ++flagslen; /* Just a single flag letter. */ \
2309 flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \
2310 if (!short_option (cs->c)) \
2311 /* This switch has no single-letter version, so we use the long. */ \
2312 flagslen += 2 + strlen (cs->long_name); \
2315 for (cs = switches; cs->c != '\0'; ++cs)
2316 if (cs->toenv && (!makefile || !cs->no_makefile))
2327 if (!*(int *) cs->value_ptr == (cs->type == flag_off)
2328 && (cs->default_value == 0
2329 || *(int *) cs->value_ptr != *(int *) cs->default_value))
2336 if ((cs->default_value != 0
2337 && (*(unsigned int *) cs->value_ptr
2338 == *(unsigned int *) cs->default_value)))
2340 else if (cs->noarg_value != 0
2341 && (*(unsigned int *) cs->value_ptr ==
2342 *(unsigned int *) cs->noarg_value))
2343 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2344 else if (cs->c == 'j')
2345 /* Special case for `-j'. */
2349 char *buf = (char *) alloca (30);
2350 sprintf (buf, "%u", *(unsigned int *) cs->value_ptr);
2351 ADD_FLAG (buf, strlen (buf));
2360 if (cs->default_value != 0
2361 && (*(double *) cs->value_ptr
2362 == *(double *) cs->default_value))
2364 else if (cs->noarg_value != 0
2365 && (*(double *) cs->value_ptr
2366 == *(double *) cs->noarg_value))
2367 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2370 char *buf = (char *) alloca (100);
2371 sprintf (buf, "%g", *(double *) cs->value_ptr);
2372 ADD_FLAG (buf, strlen (buf));
2381 struct stringlist *sl = *(struct stringlist **) cs->value_ptr;
2384 /* Add the elements in reverse order, because
2385 all the flags get reversed below; and the order
2386 matters for some switches (like -I). */
2387 register unsigned int i = sl->idx;
2389 ADD_FLAG (sl->list[i], strlen (sl->list[i]));
2395 flagslen += 4 + sizeof posixref; /* Four more for the possible " -- ". */
2399 /* Construct the value in FLAGSTRING.
2400 We allocate enough space for a preceding dash and trailing null. */
2401 flagstring = (char *) alloca (1 + flagslen + 1);
2402 bzero (flagstring, 1 + flagslen + 1);
2408 /* Add the flag letter or name to the string. */
2409 if (short_option (flags->cs->c))
2410 *p++ = flags->cs->c;
2419 strcpy (p, flags->cs->long_name);
2422 if (flags->arg != 0)
2424 /* A flag that takes an optional argument which in this case is
2425 omitted is specified by ARG being "". We must distinguish
2426 because a following flag appended without an intervening " -"
2427 is considered the arg for the first. */
2428 if (flags->arg[0] != '\0')
2430 /* Add its argument too. */
2431 *p++ = !short_option (flags->cs->c) ? '=' : ' ';
2432 p = quote_as_word (p, flags->arg, 1);
2435 /* Write a following space and dash, for the next flag. */
2439 else if (!short_option (flags->cs->c))
2442 /* Long options must each go in their own word,
2443 so we write the following space and dash. */
2447 flags = flags->next;
2450 /* Define MFLAGS before appending variable definitions. */
2452 if (p == &flagstring[1])
2454 flagstring[0] = '\0';
2455 else if (p[-1] == '-')
2457 /* Kill the final space and dash. */
2462 /* Terminate the string. */
2465 /* Since MFLAGS is not parsed for flags, there is no reason to
2466 override any makefile redefinition. */
2467 (void) define_variable ("MFLAGS", 6, flagstring, o_env, 1);
2469 if (all && command_variables != 0)
2471 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2472 command-line variable definitions. */
2474 if (p == &flagstring[1])
2475 /* No flags written, so elide the leading dash already written. */
2479 /* Separate the variables from the switches with a "--" arg. */
2482 /* We did not already write a trailing " -". */
2486 /* There is a trailing " -"; fill it out to " -- ". */
2491 /* Copy in the string. */
2494 bcopy (posixref, p, sizeof posixref - 1);
2495 p += sizeof posixref - 1;
2499 bcopy (ref, p, sizeof ref - 1);
2500 p += sizeof ref - 1;
2503 else if (p == &flagstring[1])
2508 else if (p[-1] == '-')
2509 /* Kill the final space and dash. */
2511 /* Terminate the string. */
2514 v = define_variable ("MAKEFLAGS", 9,
2515 /* If there are switches, omit the leading dash
2516 unless it is a single long option with two
2518 &flagstring[(flagstring[0] == '-'
2519 && flagstring[1] != '-')
2521 /* This used to use o_env, but that lost when a
2522 makefile defined MAKEFLAGS. Makefiles set
2523 MAKEFLAGS to add switches, but we still want
2524 to redefine its value with the full set of
2525 switches. Of course, an override or command
2526 definition will still take precedence. */
2529 /* The first time we are called, set MAKEFLAGS to always be exported.
2530 We should not do this again on the second call, because that is
2531 after reading makefiles which might have done `unexport MAKEFLAGS'. */
2532 v->export = v_export;
2535 /* Print version information. */
2540 extern char *make_host;
2541 static int printed_version = 0;
2543 char *precede = print_data_base_flag ? "# " : "";
2545 if (printed_version)
2546 /* Do it only once. */
2549 printf ("%sGNU Make version %s", precede, version_string);
2550 if (remote_description != 0 && *remote_description != '\0')
2551 printf ("-%s", remote_description);
2553 printf (_(", by Richard Stallman and Roland McGrath.\n\
2555 %sCopyright (C) 1988, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99\n\
2556 %s\tFree Software Foundation, Inc.\n\
2557 %sThis is free software; see the source for copying conditions.\n\
2558 %sThere is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\
2559 %sPARTICULAR PURPOSE.\n\n\
2560 %sReport bugs to <bug-make@gnu.org>.\n\n"),
2562 precede, precede, precede, precede, precede, precede);
2564 printed_version = 1;
2566 /* Flush stdout so the user doesn't have to wait to see the
2567 version information while things are thought about. */
2571 /* Print a bunch of information about this and that. */
2578 when = time ((time_t *) 0);
2579 printf (_("\n# Make data base, printed on %s"), ctime (&when));
2581 print_variable_data_base ();
2582 print_dir_data_base ();
2583 print_rule_data_base ();
2584 print_file_data_base ();
2585 print_vpath_data_base ();
2587 when = time ((time_t *) 0);
2588 printf (_("\n# Finished Make data base on %s\n"), ctime (&when));
2591 /* Exit with STATUS, cleaning up as necessary. */
2597 static char dying = 0;
2605 if (print_version_flag)
2608 /* Wait for children to die. */
2609 for (err = status != 0; job_slots_used > 0; err = 0)
2610 reap_children (1, err);
2612 /* Let the remote job module clean up its state. */
2615 /* Remove the intermediate files. */
2616 remove_intermediates (0);
2618 if (print_data_base_flag)
2621 /* Try to move back to the original directory. This is essential on
2622 MS-DOS (where there is really only one process), and on Unix it
2623 puts core files in the original directory instead of the -C
2624 directory. Must wait until after remove_intermediates(), or unlinks
2625 of relative pathnames fail. */
2626 if (directory_before_chdir != 0)
2627 chdir (directory_before_chdir);
2629 log_working_directory (0);
2635 /* Write a message indicating that we've just entered or
2636 left (according to ENTERING) the current directory. */
2639 log_working_directory (entering)
2642 static int entered = 0;
2643 char *msg = entering ? _("Entering") : _("Leaving");
2645 /* Print nothing without the flag. Don't print the entering message
2646 again if we already have. Don't print the leaving message if we
2647 haven't printed the entering message. */
2648 if (! print_directory_flag || entering == entered)
2653 if (print_data_base_flag)
2654 fputs ("# ", stdout);
2657 printf ("%s: %s ", program, msg);
2659 printf ("%s[%u]: %s ", program, makelevel, msg);
2661 if (starting_directory == 0)
2662 puts (_("an unknown directory"));
2664 printf (_("directory `%s'\n"), starting_directory);