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. */
33 # include <proto/dos.h>
37 #include "pathstuff.h"
39 #if defined(MAKE_JOBSERVER) && defined(HAVE_FCNTL_H)
44 int __stack
= 20000; /* Make sure we have 20K of stack space */
47 extern void init_dir
PARAMS ((void));
48 extern void remote_setup
PARAMS ((void));
49 extern void remote_cleanup
PARAMS ((void));
50 extern RETSIGTYPE fatal_error_signal
PARAMS ((int sig
));
52 extern void print_variable_data_base
PARAMS ((void));
53 extern void print_dir_data_base
PARAMS ((void));
54 extern void print_rule_data_base
PARAMS ((void));
55 extern void print_file_data_base
PARAMS ((void));
56 extern void print_vpath_data_base
PARAMS ((void));
58 #if defined HAVE_WAITPID || defined HAVE_WAIT3
59 # define HAVE_WAIT_NOHANG
66 # ifndef sun /* Sun has an incorrect decl in a header. */
67 extern void exit
PARAMS ((int)) __attribute__ ((noreturn
));
69 extern double atof ();
71 extern char *mktemp ();
73 static void print_data_base
PARAMS ((void));
74 static void print_version
PARAMS ((void));
75 static void decode_switches
PARAMS ((int argc
, char **argv
, int env
));
76 static void decode_env_switches
PARAMS ((char *envar
, unsigned int len
));
77 static void define_makeflags
PARAMS ((int all
, int makefile
));
78 static char *quote_for_env
PARAMS ((char *out
, char *in
));
80 /* The structure that describes an accepted command switch. */
84 int c
; /* The switch character. */
86 enum /* Type of the value. */
88 flag
, /* Turn int flag on. */
89 flag_off
, /* Turn int flag off. */
90 string
, /* One string per switch. */
91 positive_int
, /* A positive integer. */
92 floating
, /* A floating-point number (double). */
96 char *value_ptr
; /* Pointer to the value-holding variable. */
98 unsigned int env
:1; /* Can come from MAKEFLAGS. */
99 unsigned int toenv
:1; /* Should be put in MAKEFLAGS. */
100 unsigned int no_makefile
:1; /* Don't propagate when remaking makefiles. */
102 char *noarg_value
; /* Pointer to value used if no argument is given. */
103 char *default_value
;/* Pointer to default value. */
105 char *long_name
; /* Long option name. */
106 char *argdesc
; /* Descriptive word for argument. */
107 char *description
; /* Description for usage message. */
108 /* 0 means internal; don't display help. */
111 /* True if C is a switch value that corresponds to a short option. */
113 #define short_option(c) ((c) <= CHAR_MAX)
115 /* The structure used to hold the list of strings given
116 in command switches of a type that takes string arguments. */
120 char **list
; /* Nil-terminated list of strings. */
121 unsigned int idx
; /* Index into above. */
122 unsigned int max
; /* Number of pointers allocated. */
126 /* The recognized command switches. */
128 /* Nonzero means do not print commands to be executed (-s). */
132 /* Nonzero means just touch the files
133 that would appear to need remaking (-t) */
137 /* Nonzero means just print what commands would need to be executed,
138 don't actually execute them (-n). */
142 /* Print debugging info (--debug). */
144 static struct stringlist
*db_flags
;
149 /* Suspend make in main for a short time to allow debugger to attach */
151 int suspend_flag
= 0;
154 /* Environment variables override makefile definitions. */
156 int env_overrides
= 0;
158 /* Nonzero means ignore status codes returned by commands
159 executed to remake files. Just treat them all as successful (-i). */
161 int ignore_errors_flag
= 0;
163 /* Nonzero means don't remake anything, just print the data base
164 that results from reading the makefile (-p). */
166 int print_data_base_flag
= 0;
168 /* Nonzero means don't remake anything; just return a nonzero status
169 if the specified targets are not up to date (-q). */
171 int question_flag
= 0;
173 /* Nonzero means do not use any of the builtin rules (-r) / variables (-R). */
175 int no_builtin_rules_flag
= 0;
176 int no_builtin_variables_flag
= 0;
178 /* Nonzero means keep going even if remaking some file fails (-k). */
181 int default_keep_going_flag
= 0;
183 /* Nonzero means print directory before starting and when done (-w). */
185 int print_directory_flag
= 0;
187 /* Nonzero means ignore print_directory_flag and never print the directory.
188 This is necessary because print_directory_flag is set implicitly. */
190 int inhibit_print_directory_flag
= 0;
192 /* Nonzero means print version information. */
194 int print_version_flag
= 0;
196 /* List of makefiles given with -f switches. */
198 static struct stringlist
*makefiles
= 0;
200 /* Number of job slots (commands that can be run at once). */
202 unsigned int job_slots
= 1;
203 unsigned int default_job_slots
= 1;
205 /* Value of job_slots that means no limit. */
207 static unsigned int inf_jobs
= 0;
209 /* File descriptors for the jobs pipe. */
211 static struct stringlist
*jobserver_fds
= 0;
213 int job_fds
[2] = { -1, -1 };
216 /* Maximum load average at which multiple jobs will be run.
217 Negative values mean unlimited, while zero means limit to
218 zero load (which could be useful to start infinite jobs remotely
219 but one at a time locally). */
221 double max_load_average
= -1.0;
222 double default_load_average
= -1.0;
224 int max_load_average
= -1;
225 int default_load_average
= -1;
228 /* List of directories given with -C switches. */
230 static struct stringlist
*directories
= 0;
232 /* List of include directories given with -I switches. */
234 static struct stringlist
*include_directories
= 0;
236 /* List of files given with -o switches. */
238 static struct stringlist
*old_files
= 0;
240 /* List of files given with -W switches. */
242 static struct stringlist
*new_files
= 0;
244 /* If nonzero, we should just print usage and exit. */
246 static int print_usage_flag
= 0;
248 /* If nonzero, we should print a warning message
249 for each reference to an undefined variable. */
251 int warn_undefined_variables_flag
;
253 /* The table of command switches. */
255 static const struct command_switch switches
[] =
257 { 'b', ignore
, 0, 0, 0, 0, 0, 0,
259 _("Ignored for compatibility") },
260 { 'C', string
, (char *) &directories
, 0, 0, 0, 0, 0,
261 "directory", _("DIRECTORY"),
262 _("Change to DIRECTORY before doing anything") },
263 { 'd', string
, (char *) &db_flags
, 1, 1, 0,
266 _("Print different types of debugging information") },
268 { 'D', flag
, (char *) &suspend_flag
, 1, 1, 0, 0, 0,
269 "suspend-for-debug", 0,
270 _("Suspend process to allow a debugger to attach") },
272 { 'e', flag
, (char *) &env_overrides
, 1, 1, 0, 0, 0,
273 "environment-overrides", 0,
274 _("Environment variables override makefiles") },
275 { 'f', string
, (char *) &makefiles
, 0, 0, 0, 0, 0,
277 _("Read FILE as a makefile") },
278 { 'h', flag
, (char *) &print_usage_flag
, 0, 0, 0, 0, 0,
280 _("Print this message and exit") },
281 { 'i', flag
, (char *) &ignore_errors_flag
, 1, 1, 0, 0, 0,
283 _("Ignore errors from commands") },
284 { 'I', string
, (char *) &include_directories
, 1, 1, 0, 0, 0,
285 "include-dir", _("DIRECTORY"),
286 _("Search DIRECTORY for included makefiles") },
288 positive_int
, (char *) &job_slots
, 1, 1, 0,
289 (char *) &inf_jobs
, (char *) &default_job_slots
,
291 _("Allow N jobs at once; infinite jobs with no arg") },
292 { CHAR_MAX
+1, string
, (char *) &jobserver_fds
, 1, 1, 0, 0, 0,
295 { 'k', flag
, (char *) &keep_going_flag
, 1, 1, 0,
296 0, (char *) &default_keep_going_flag
,
298 _("Keep going when some targets can't be made") },
300 { 'l', floating
, (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 { 'l', positive_int
, (char *) &max_load_average
, 1, 1, 0,
306 (char *) &default_load_average
, (char *) &default_load_average
,
308 _("Don't start multiple jobs unless load is below N") },
310 { 'm', ignore
, 0, 0, 0, 0, 0, 0,
313 { 'n', flag
, (char *) &just_print_flag
, 1, 1, 1, 0, 0,
315 _("Don't actually run any commands; just print them") },
316 { 'o', string
, (char *) &old_files
, 0, 0, 0, 0, 0,
317 "old-file", _("FILE"),
318 _("Consider FILE to be very old and don't remake it") },
319 { 'p', flag
, (char *) &print_data_base_flag
, 1, 1, 0, 0, 0,
320 "print-data-base", 0,
321 _("Print make's internal database") },
322 { 'q', flag
, (char *) &question_flag
, 1, 1, 1, 0, 0,
324 _("Run no commands; exit status says if up to date") },
325 { 'r', flag
, (char *) &no_builtin_rules_flag
, 1, 1, 0, 0, 0,
326 "no-builtin-rules", 0,
327 _("Disable the built-in implicit rules") },
328 { 'R', flag
, (char *) &no_builtin_variables_flag
, 1, 1, 0, 0, 0,
329 "no-builtin-variables", 0,
330 _("Disable the built-in variable settings") },
331 { 's', flag
, (char *) &silent_flag
, 1, 1, 0, 0, 0,
333 _("Don't echo commands") },
334 { 'S', flag_off
, (char *) &keep_going_flag
, 1, 1, 0,
335 0, (char *) &default_keep_going_flag
,
338 { 't', flag
, (char *) &touch_flag
, 1, 1, 1, 0, 0,
340 _("Touch targets instead of remaking them") },
341 { 'v', flag
, (char *) &print_version_flag
, 1, 1, 0, 0, 0,
343 _("Print the version number of make and exit") },
344 { 'w', flag
, (char *) &print_directory_flag
, 1, 1, 0, 0, 0,
345 "print-directory", 0,
346 _("Print the current directory") },
347 { CHAR_MAX
+2, flag
, (char *) &inhibit_print_directory_flag
, 1, 1, 0, 0, 0,
348 "no-print-directory", 0,
349 _("Turn off -w, even if it was turned on implicitly") },
350 { 'W', string
, (char *) &new_files
, 0, 0, 0, 0, 0,
351 "what-if", _("FILE"),
352 _("Consider FILE to be infinitely new") },
353 { CHAR_MAX
+3, flag
, (char *) &warn_undefined_variables_flag
, 1, 1, 0, 0, 0,
354 "warn-undefined-variables", 0,
355 _("Warn when an undefined variable is referenced") },
359 /* Secondary long names for options. */
361 static struct option long_option_aliases
[] =
363 { "quiet", no_argument
, 0, 's' },
364 { "stop", no_argument
, 0, 'S' },
365 { "new-file", required_argument
, 0, 'W' },
366 { "assume-new", required_argument
, 0, 'W' },
367 { "assume-old", required_argument
, 0, 'o' },
368 { "max-load", optional_argument
, 0, 'l' },
369 { "dry-run", no_argument
, 0, 'n' },
370 { "recon", no_argument
, 0, 'n' },
371 { "makefile", required_argument
, 0, 'f' },
374 /* The usage message prints the descriptions of options starting in
375 this column. Make sure it leaves enough room for the longest
376 description to fit in less than 80 characters. */
378 #define DESCRIPTION_COLUMN 30
380 /* List of goal targets. */
382 static struct dep
*goals
, *lastgoal
;
384 /* List of variables which were defined on the command line
385 (or, equivalently, in MAKEFLAGS). */
387 struct command_variable
389 struct command_variable
*next
;
390 struct variable
*variable
;
392 static struct command_variable
*command_variables
;
394 /* The name we were invoked with. */
398 /* Our current directory before processing any -C options. */
400 char *directory_before_chdir
;
402 /* Our current directory after processing all -C options. */
404 char *starting_directory
;
406 /* Value of the MAKELEVEL variable at startup (or 0). */
408 unsigned int makelevel
;
410 /* First file defined in the makefile whose name does not
411 start with `.'. This is the default to remake if the
412 command line does not specify. */
414 struct file
*default_goal_file
;
416 /* Pointer to structure for the file .DEFAULT
417 whose commands are used for any file that has none of its own.
418 This is zero if the makefiles do not define .DEFAULT. */
420 struct file
*default_file
;
422 /* Nonzero if we have seen the magic `.POSIX' target.
423 This turns on pedantic compliance with POSIX.2. */
427 /* Nonzero if we have seen the `.NOTPARALLEL' target.
428 This turns off parallel builds for this invocation of make. */
432 /* Nonzero if some rule detected clock skew; we keep track so (a) we only
433 print one warning about it during the run, and (b) we can print a final
434 warning at the end of the run. */
436 int clock_skew_detected
;
438 /* Mask of signals that are being caught with fatal_error_signal. */
441 sigset_t fatal_signal_set
;
443 #ifdef HAVE_SIGSETMASK
444 int fatal_signal_mask
;
449 enter_command_line_file (name
)
453 fatal (NILF
, _("empty string invalid as file name"));
457 char *expanded
= tilde_expand (name
);
459 name
= expanded
; /* Memory leak; I don't care. */
462 /* This is also done in parse_file_seq, so this is redundant
463 for names read from makefiles. It is here for names passed
464 on the command line. */
465 while (name
[0] == '.' && name
[1] == '/' && name
[2] != '\0')
469 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
475 /* It was all slashes! Move back to the dot and truncate
476 it after the first slash, so it becomes just "./". */
479 while (name
[0] != '.');
483 return enter_file (xstrdup (name
));
486 /* Toggle -d on receipt of SIGUSR1. */
489 debug_signal_handler (sig
)
492 db_level
= db_level
? DB_NONE
: DB_BASIC
;
496 decode_debug_flags ()
503 for (pp
=db_flags
->list
; *pp
; ++pp
)
509 switch (tolower (p
[0]))
515 db_level
|= DB_BASIC
;
518 db_level
|= DB_IMPLICIT
;
524 db_level
|= DB_MAKEFILES
;
527 db_level
|= DB_BASIC
| DB_VERBOSE
;
530 fatal (NILF
, _("unknown debug level specification `%s'"), p
);
533 while (*(++p
) != '\0')
534 if (*p
== ',' || *p
== ' ')
547 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
548 * exception and print it to stderr instead.
550 * If ! DB_VERBOSE, just print a simple message and exit.
551 * If DB_VERBOSE, print a more verbose message.
552 * If compiled for DEBUG, let exception pass through to GUI so that
553 * debuggers can attach.
556 handle_runtime_exceptions( struct _EXCEPTION_POINTERS
*exinfo
)
558 PEXCEPTION_RECORD exrec
= exinfo
->ExceptionRecord
;
559 LPSTR cmdline
= GetCommandLine();
560 LPSTR prg
= strtok(cmdline
, " ");
564 LPTSTR lpszStrings
[1];
567 if (! ISDB (DB_VERBOSE
))
569 sprintf(errmsg
, _("%s: Interrupt/Exception caught "), prg
);
570 sprintf(&errmsg
[strlen(errmsg
)],
571 "(code = 0x%x, addr = 0x%x)\r\n",
572 exrec
->ExceptionCode
, exrec
->ExceptionAddress
);
573 fprintf(stderr
, errmsg
);
578 _("\r\nUnhandled exception filter called from program %s\r\n"), prg
);
579 sprintf(&errmsg
[strlen(errmsg
)], "ExceptionCode = %x\r\n",
580 exrec
->ExceptionCode
);
581 sprintf(&errmsg
[strlen(errmsg
)], "ExceptionFlags = %x\r\n",
582 exrec
->ExceptionFlags
);
583 sprintf(&errmsg
[strlen(errmsg
)], "ExceptionAddress = %x\r\n",
584 exrec
->ExceptionAddress
);
586 if (exrec
->ExceptionCode
== EXCEPTION_ACCESS_VIOLATION
587 && exrec
->NumberParameters
>= 2)
588 sprintf(&errmsg
[strlen(errmsg
)],
589 _("Access violation: %s operation at address %x\r\n"),
590 exrec
->ExceptionInformation
[0] ? _("write"): _("read"),
591 exrec
->ExceptionInformation
[1]);
593 /* turn this on if we want to put stuff in the event log too */
595 hEventSource
= RegisterEventSource(NULL
, "GNU Make");
596 lpszStrings
[0] = errmsg
;
598 if (hEventSource
!= NULL
)
600 ReportEvent(hEventSource
, /* handle of event source */
601 EVENTLOG_ERROR_TYPE
, /* event type */
602 0, /* event category */
604 NULL
, /* current user's SID */
605 1, /* strings in lpszStrings */
606 0, /* no bytes of raw data */
607 lpszStrings
, /* array of error strings */
608 NULL
); /* no raw data */
610 (VOID
) DeregisterEventSource(hEventSource
);
614 /* Write the error to stderr too */
615 fprintf(stderr
, errmsg
);
618 return EXCEPTION_CONTINUE_SEARCH
;
621 return (255); /* not reached */
626 * On WIN32 systems we don't have the luxury of a /bin directory that
627 * is mapped globally to every drive mounted to the system. Since make could
628 * be invoked from any drive, and we don't want to propogate /bin/sh
629 * to every single drive. Allow ourselves a chance to search for
630 * a value for default shell here (if the default path does not exist).
634 find_and_set_default_shell(char *token
)
639 extern char *default_shell
;
642 search_token
= default_shell
;
644 search_token
= token
;
646 if (!no_default_sh_exe
&&
647 (token
== NULL
|| !strcmp(search_token
, default_shell
))) {
648 /* no new information, path already set or known */
650 } else if (file_exists_p(search_token
)) {
651 /* search token path was found */
652 sprintf(sh_path
, "%s", search_token
);
653 default_shell
= xstrdup(w32ify(sh_path
,0));
655 (_("find_and_set_shell setting default_shell = %s\n"), default_shell
));
659 struct variable
*v
= lookup_variable ("Path", 4);
662 * Search Path for shell
668 ep
= strchr(p
, PATH_SEPARATOR_CHAR
);
673 if (dir_file_exists_p(p
, search_token
)) {
674 sprintf(sh_path
, "%s/%s", p
, search_token
);
675 default_shell
= xstrdup(w32ify(sh_path
,0));
677 *ep
= PATH_SEPARATOR_CHAR
;
682 *ep
= PATH_SEPARATOR_CHAR
;
686 ep
= strchr(p
, PATH_SEPARATOR_CHAR
);
689 /* be sure to check last element of Path */
690 if (p
&& *p
&& dir_file_exists_p(p
, search_token
)) {
691 sprintf(sh_path
, "%s/%s", p
, search_token
);
692 default_shell
= xstrdup(w32ify(sh_path
,0));
698 (_("find_and_set_shell path search set default_shell = %s\n"),
704 if (!unixy_shell
&& sh_found
&&
705 (strstr(default_shell
, "sh") || strstr(default_shell
, "SH"))) {
707 batch_mode_shell
= 0;
710 #ifdef BATCH_MODE_ONLY_SHELL
711 batch_mode_shell
= 1;
716 #endif /* WINDOWS32 */
721 msdos_return_to_initial_directory ()
723 if (directory_before_chdir
)
724 chdir (directory_before_chdir
);
730 main (argc
, argv
, envp
)
735 int main (int argc
, char ** argv
)
738 static char *stdin_nm
= 0;
739 register struct file
*f
;
740 register unsigned int i
;
742 struct dep
*read_makefiles
;
743 PATH_VAR (current_directory
);
745 char *unix_path
= NULL
;
746 char *windows32_path
= NULL
;
748 SetUnhandledExceptionFilter(handle_runtime_exceptions
);
750 /* start off assuming we have no shell */
752 no_default_sh_exe
= 1;
755 default_goal_file
= 0;
758 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
759 /* Request the most powerful version of `system', to
760 make up for the dumb default shell. */
761 __system_flags
= (__system_redirect
763 | __system_allow_multiple_cmds
764 | __system_allow_long_cmds
765 | __system_handle_null_commands
766 | __system_emulate_chdir
);
770 #if !defined (HAVE_STRSIGNAL) && !defined (HAVE_SYS_SIGLIST)
775 sigemptyset (&fatal_signal_set
);
776 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
778 #ifdef HAVE_SIGSETMASK
779 fatal_signal_mask
= 0;
780 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
786 #define FATAL_SIG(sig) \
787 if (signal ((sig), fatal_error_signal) == SIG_IGN) \
788 (void) signal ((sig), SIG_IGN); \
802 FATAL_SIG (SIGDANGER
);
813 /* Do not ignore the child-death signal. This must be done before
814 any children could possibly be created; otherwise, the wait
815 functions won't work on systems with the SVR4 ECHILD brain
816 damage, if our invoker is ignoring this signal. */
818 #ifdef HAVE_WAIT_NOHANG
820 (void) signal (SIGCHLD
, SIG_DFL
);
822 # if defined SIGCLD && SIGCLD != SIGCHLD
823 (void) signal (SIGCLD
, SIG_DFL
);
827 /* Make sure stdout is line-buffered. */
829 #ifdef HAVE_SETLINEBUF
832 #ifndef SETVBUF_REVERSED
833 setvbuf (stdout
, (char *) 0, _IOLBF
, BUFSIZ
);
834 #else /* setvbuf not reversed. */
835 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
836 setvbuf (stdout
, _IOLBF
, xmalloc (BUFSIZ
), BUFSIZ
);
837 #endif /* setvbuf reversed. */
838 #endif /* setlinebuf missing. */
840 /* Figure out where this program lives. */
844 if (argv
[0][0] == '\0')
849 program
= strrchr (argv
[0], ']');
851 program
= strrchr (argv
[0], '/');
855 program
= strrchr (argv
[0], '\\');
858 /* Some weird environments might pass us argv[0] with
859 both kinds of slashes; we must find the rightmost. */
860 char *p
= strrchr (argv
[0], '\\');
861 if (p
&& p
> program
)
864 if (program
== 0 && argv
[0][1] == ':')
865 program
= argv
[0] + 1;
873 /* Set up to access user data (files). */
876 /* Figure out where we are. */
879 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
881 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
885 perror_with_name ("getcwd: ", "");
887 error (NILF
, "getwd: %s", current_directory
);
889 current_directory
[0] = '\0';
890 directory_before_chdir
= 0;
893 directory_before_chdir
= xstrdup (current_directory
);
895 /* Make sure we will return to the initial directory, come what may. */
896 atexit (msdos_return_to_initial_directory
);
899 /* Read in variables from the environment. It is important that this be
900 done before $(MAKE) is figured out so its definitions will not be
901 from the environment. */
904 for (i
= 0; envp
[i
] != 0; ++i
)
907 register char *ep
= envp
[i
];
909 /* by default, everything gets defined and exported */
915 if (!unix_path
&& strneq(envp
[i
], "PATH=", 5))
917 else if (!windows32_path
&& !strnicmp(envp
[i
], "Path=", 5)) {
918 do_not_define
= 1; /* it gets defined after loop exits */
919 windows32_path
= ep
+1;
922 /* The result of pointer arithmetic is cast to unsigned int for
923 machines where ptrdiff_t is a different size that doesn't widen
926 define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
928 /* Force exportation of every variable culled from the environment.
929 We used to rely on target_environment's v_default code to do this.
930 But that does not work for the case where an environment variable
931 is redefined in a makefile with `override'; it should then still
932 be exported, because it was originally in the environment. */
937 * Make sure that this particular spelling of 'Path' is available
940 define_variable("Path", 4, windows32_path
, o_env
, 1)->export
= v_export
;
942 define_variable("Path", 4, unix_path
, o_env
, 1)->export
= v_export
;
944 define_variable("Path", 4, "", o_env
, 1)->export
= v_export
;
947 * PATH defaults to Path iff PATH not found and Path is found.
949 if (!unix_path
&& windows32_path
)
950 define_variable("PATH", 4, windows32_path
, o_env
, 1)->export
= v_export
;
952 #else /* For Amiga, read the ENV: device, ignoring all dirs */
957 __aligned
struct FileInfoBlock fib
;
959 env
= Lock ("ENV:", ACCESS_READ
);
962 old
= CurrentDir (DupLock(env
));
965 while (ExNext (env
, &fib
))
967 if (fib
.fib_DirEntryType
< 0) /* File */
969 /* Define an empty variable. It will be filled in
970 variable_lookup(). Makes startup quite a bit
972 define_variable (fib
.fib_FileName
,
973 strlen (fib
.fib_FileName
),
974 "", o_env
, 1)->export
= v_export
;
978 UnLock(CurrentDir(old
));
983 /* Decode the switches. */
985 decode_env_switches ("MAKEFLAGS", 9);
987 /* People write things like:
988 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
989 and we set the -p, -i and -e switches. Doesn't seem quite right. */
990 decode_env_switches ("MFLAGS", 6);
992 decode_switches (argc
, argv
, 0);
995 fprintf(stderr
, "%s (pid = %d)\n", argv
[0], GetCurrentProcessId());
996 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
998 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1002 decode_debug_flags ();
1004 /* Print version information. */
1006 if (print_version_flag
|| print_data_base_flag
|| db_level
)
1009 /* `make --version' is supposed to just print the version and exit. */
1010 if (print_version_flag
)
1014 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1015 (If it is a relative pathname with a slash, prepend our directory name
1016 so the result will run the same program regardless of the current dir.
1017 If it is a name with no slash, we can only hope that PATH did not
1018 find it in the current directory.) */
1021 * Convert from backslashes to forward slashes for
1022 * programs like sh which don't like them. Shouldn't
1023 * matter if the path is one way or the other for
1026 if (strpbrk(argv
[0], "/:\\") ||
1027 strstr(argv
[0], "..") ||
1028 strneq(argv
[0], "//", 2))
1029 argv
[0] = xstrdup(w32ify(argv
[0],1));
1030 #else /* WINDOWS32 */
1032 if (strchr (argv
[0], '\\'))
1036 argv
[0] = xstrdup (argv
[0]);
1037 for (p
= argv
[0]; *p
; p
++)
1041 /* If argv[0] is not in absolute form, prepend the current
1042 directory. This can happen when Make is invoked by another DJGPP
1043 program that uses a non-absolute name. */
1044 if (current_directory
[0] != '\0'
1046 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':')))
1047 argv
[0] = concat (current_directory
, "/", argv
[0]);
1048 #else /* !__MSDOS__ */
1049 if (current_directory
[0] != '\0'
1050 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0)
1051 argv
[0] = concat (current_directory
, "/", argv
[0]);
1052 #endif /* !__MSDOS__ */
1053 #endif /* WINDOWS32 */
1056 /* The extra indirection through $(MAKE_COMMAND) is done
1057 for hysterical raisins. */
1058 (void) define_variable ("MAKE_COMMAND", 12, argv
[0], o_default
, 0);
1059 (void) define_variable ("MAKE", 4, "$(MAKE_COMMAND)", o_default
, 1);
1061 if (command_variables
!= 0)
1063 struct command_variable
*cv
;
1065 unsigned int len
= 0;
1068 /* Figure out how much space will be taken up by the command-line
1069 variable definitions. */
1070 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1073 len
+= 2 * strlen (v
->name
);
1077 len
+= 2 * strlen (v
->value
);
1081 /* Now allocate a buffer big enough and fill it. */
1082 p
= value
= (char *) alloca (len
);
1083 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1086 p
= quote_for_env (p
, v
->name
);
1090 p
= quote_for_env (p
, v
->value
);
1093 p
[-1] = '\0'; /* Kill the final space and terminate. */
1095 /* Define an unchangeable variable with a name that no POSIX.2
1096 makefile could validly use for its own variable. */
1097 (void) define_variable ("-*-command-variables-*-", 23,
1098 value
, o_automatic
, 0);
1100 /* Define the variable; this will not override any user definition.
1101 Normally a reference to this variable is written into the value of
1102 MAKEFLAGS, allowing the user to override this value to affect the
1103 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1104 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1105 a reference to this hidden variable is written instead. */
1106 (void) define_variable ("MAKEOVERRIDES", 13,
1107 "${-*-command-variables-*-}", o_env
, 1);
1110 /* If there were -C flags, move ourselves about. */
1111 if (directories
!= 0)
1112 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1114 char *dir
= directories
->list
[i
];
1117 char *expanded
= tilde_expand (dir
);
1121 if (chdir (dir
) < 0)
1122 pfatal_with_name (dir
);
1123 if (dir
!= directories
->list
[i
])
1129 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1130 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1132 * The functions in dir.c can incorrectly cache information for "."
1133 * before we have changed directory and this can cause file
1134 * lookups to fail because the current directory (.) was pointing
1135 * at the wrong place when it was first evaluated.
1137 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1139 #endif /* WINDOWS32 */
1140 /* Figure out the level of recursion. */
1142 struct variable
*v
= lookup_variable ("MAKELEVEL", 9);
1143 if (v
!= 0 && *v
->value
!= '\0' && *v
->value
!= '-')
1144 makelevel
= (unsigned int) atoi (v
->value
);
1149 /* Except under -s, always do -w in sub-makes and under -C. */
1150 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1151 print_directory_flag
= 1;
1153 /* Let the user disable that with --no-print-directory. */
1154 if (inhibit_print_directory_flag
)
1155 print_directory_flag
= 0;
1157 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1158 if (no_builtin_variables_flag
)
1159 no_builtin_rules_flag
= 1;
1161 /* Construct the list of include directories to search. */
1163 construct_include_path (include_directories
== 0 ? (char **) 0
1164 : include_directories
->list
);
1166 /* Figure out where we are now, after chdir'ing. */
1167 if (directories
== 0)
1168 /* We didn't move, so we're still in the same place. */
1169 starting_directory
= current_directory
;
1173 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1175 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1179 perror_with_name ("getcwd: ", "");
1181 error (NILF
, "getwd: %s", current_directory
);
1183 starting_directory
= 0;
1186 starting_directory
= current_directory
;
1189 (void) define_variable ("CURDIR", 6, current_directory
, o_default
, 0);
1191 /* Read any stdin makefiles into temporary files. */
1195 register unsigned int i
;
1196 for (i
= 0; i
< makefiles
->idx
; ++i
)
1197 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1199 /* This makefile is standard input. Since we may re-exec
1200 and thus re-read the makefiles, we read standard input
1201 into a temporary file and read from that. */
1204 /* Make a unique filename. */
1208 static char name
[] = "sys$scratch:GmXXXXXX";
1210 static char name
[] = "/tmp/GmXXXXXX";
1212 (void) mktemp (name
);
1214 static char name
[L_tmpnam
];
1215 (void) tmpnam (name
);
1219 fatal (NILF
, _("Makefile from standard input specified twice."));
1221 outfile
= fopen (name
, "w");
1223 pfatal_with_name (_("fopen (temporary file)"));
1224 while (!feof (stdin
))
1227 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1228 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1229 pfatal_with_name (_("fwrite (temporary file)"));
1231 (void) fclose (outfile
);
1233 /* Replace the name that read_all_makefiles will
1234 see with the name of the temporary file. */
1237 /* SGI compiler requires alloca's result be assigned simply. */
1238 temp
= (char *) alloca (sizeof (name
));
1239 bcopy (name
, temp
, sizeof (name
));
1240 makefiles
->list
[i
] = temp
;
1243 /* Make sure the temporary file will not be remade. */
1244 stdin_nm
= savestring (name
, sizeof (name
) -1);
1245 f
= enter_file (stdin_nm
);
1247 f
->update_status
= 0;
1248 f
->command_state
= cs_finished
;
1249 /* Can't be intermediate, or it'll be removed too early for
1251 f
->intermediate
= 0;
1256 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1257 /* Set up to handle children dying. This must be done before
1258 reading in the makefiles so that `shell' function calls will work.
1260 If we don't have a hanging wait we have to fall back to old, broken
1261 functionality here and rely on the signal handler and counting
1264 If we're using the jobs pipe we need a signal handler so that
1265 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1266 jobserver pipe in job.c if we're waiting for a token.
1268 If none of these are true, we don't need a signal handler at all. */
1270 extern RETSIGTYPE child_handler
PARAMS ((int sig
));
1272 # if defined HAVE_SIGACTION
1273 struct sigaction sa
;
1275 bzero ((char *)&sa
, sizeof (struct sigaction
));
1276 sa
.sa_handler
= child_handler
;
1277 # if defined SA_INTERRUPT
1278 /* This is supposed to be the default, but what the heck... */
1279 sa
.sa_flags
= SA_INTERRUPT
;
1281 # define HANDLESIG(s) sigaction (s, &sa, NULL)
1283 # define HANDLESIG(s) signal (s, child_handler)
1286 /* OK, now actually install the handlers. */
1287 # if defined SIGCHLD
1288 (void) HANDLESIG (SIGCHLD
);
1290 # if defined SIGCLD && SIGCLD != SIGCHLD
1291 (void) HANDLESIG (SIGCLD
);
1296 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1298 (void) signal (SIGUSR1
, debug_signal_handler
);
1301 /* Define the initial list of suffixes for old-style rules. */
1303 set_default_suffixes ();
1305 /* Define the file rules for the built-in suffix rules. These will later
1306 be converted into pattern rules. We used to do this in
1307 install_default_implicit_rules, but since that happens after reading
1308 makefiles, it results in the built-in pattern rules taking precedence
1309 over makefile-specified suffix rules, which is wrong. */
1311 install_default_suffix_rules ();
1313 /* Define some internal and special variables. */
1315 define_automatic_variables ();
1317 /* Set up the MAKEFLAGS and MFLAGS variables
1318 so makefiles can look at them. */
1320 define_makeflags (0, 0);
1322 /* Define the default variables. */
1323 define_default_variables ();
1325 /* Read all the makefiles. */
1327 default_file
= enter_file (".DEFAULT");
1330 = read_all_makefiles (makefiles
== 0 ? (char **) 0 : makefiles
->list
);
1333 /* look one last time after reading all Makefiles */
1334 if (no_default_sh_exe
)
1335 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1337 if (no_default_sh_exe
&& job_slots
!= 1) {
1338 error (NILF
, _("Do not specify -j or --jobs if sh.exe is not available."));
1339 error (NILF
, _("Resetting make for single job mode."));
1342 #endif /* WINDOWS32 */
1345 /* We need to know what kind of shell we will be using. */
1347 extern int _is_unixy_shell (const char *_path
);
1348 struct variable
*shv
= lookup_variable ("SHELL", 5);
1349 extern int unixy_shell
;
1350 extern char *default_shell
;
1352 if (shv
&& *shv
->value
)
1354 char *shell_path
= recursively_expand(shv
);
1356 if (shell_path
&& _is_unixy_shell (shell_path
))
1361 default_shell
= shell_path
;
1364 #endif /* __MSDOS__ */
1366 /* Decode switches again, in case the variables were set by the makefile. */
1367 decode_env_switches ("MAKEFLAGS", 9);
1369 decode_env_switches ("MFLAGS", 6);
1376 _("Parallel jobs (-j) are not supported on this platform."));
1377 error (NILF
, _("Resetting to single job (-j1) mode."));
1382 #ifdef MAKE_JOBSERVER
1383 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1389 for (i
=1; i
< jobserver_fds
->idx
; ++i
)
1390 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[i
]))
1391 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1393 /* Now parse the fds string and make sure it has the proper format. */
1395 cp
= jobserver_fds
->list
[0];
1397 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1399 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1401 /* The combination of a pipe + !job_slots means we're using the
1402 jobserver. If !job_slots and we don't have a pipe, we can start
1403 infinite jobs. If we see both a pipe and job_slots >0 that means the
1404 user set -j explicitly. This is broken; in this case obey the user
1405 (ignore the jobserver pipe for this make) but print a message. */
1409 _("warning: -jN forced in submake: disabling jobserver mode."));
1411 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1412 handler. If this fails with EBADF, the parent has closed the pipe
1413 on us because it didn't think we were a submake. If so, print a
1414 warning then default to -j1. */
1416 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1419 pfatal_with_name (_("dup jobserver"));
1422 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1430 job_fds
[0] = job_fds
[1] = -1;
1431 free (jobserver_fds
->list
);
1432 free (jobserver_fds
);
1437 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1438 Set up the pipe and install the fds option for our children. */
1444 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1445 pfatal_with_name (_("creating jobs pipe"));
1447 /* Every make assumes that it always has one job it can run. For the
1448 submakes it's the token they were given by their parent. For the
1449 top make, we just subtract one from the number the user wants. We
1450 want job_slots to be 0 to indicate we're using the jobserver. */
1453 while (write (job_fds
[1], &c
, 1) != 1)
1455 pfatal_with_name (_("init jobserver pipe"));
1457 /* Fill in the jobserver_fds struct for our children. */
1459 jobserver_fds
= (struct stringlist
*)
1460 xmalloc (sizeof (struct stringlist
));
1461 jobserver_fds
->list
= (char **) xmalloc (sizeof (char *));
1462 jobserver_fds
->list
[0] = xmalloc ((sizeof ("1024")*2)+1);
1464 sprintf (jobserver_fds
->list
[0], "%d,%d", job_fds
[0], job_fds
[1]);
1465 jobserver_fds
->idx
= 1;
1466 jobserver_fds
->max
= 1;
1470 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1472 define_makeflags (1, 0);
1474 /* Make each `struct dep' point at the `struct file' for the file
1475 depended on. Also do magic for special targets. */
1479 /* Convert old-style suffix rules to pattern rules. It is important to
1480 do this before installing the built-in pattern rules below, so that
1481 makefile-specified suffix rules take precedence over built-in pattern
1484 convert_to_pattern ();
1486 /* Install the default implicit pattern rules.
1487 This used to be done before reading the makefiles.
1488 But in that case, built-in pattern rules were in the chain
1489 before user-defined ones, so they matched first. */
1491 install_default_implicit_rules ();
1493 /* Compute implicit rule limits. */
1495 count_implicit_rule_limits ();
1497 /* Construct the listings of directories in VPATH lists. */
1499 build_vpath_lists ();
1501 /* Mark files given with -o flags as very old (00:00:01.00 Jan 1, 1970)
1502 and as having been updated already, and files given with -W flags as
1503 brand new (time-stamp as far as possible into the future). */
1506 for (p
= old_files
->list
; *p
!= 0; ++p
)
1508 f
= enter_command_line_file (*p
);
1509 f
->last_mtime
= f
->mtime_before_update
= (FILE_TIMESTAMP
) 1;
1511 f
->update_status
= 0;
1512 f
->command_state
= cs_finished
;
1517 for (p
= new_files
->list
; *p
!= 0; ++p
)
1519 f
= enter_command_line_file (*p
);
1520 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1524 /* Initialize the remote job module. */
1527 if (read_makefiles
!= 0)
1529 /* Update any makefiles if necessary. */
1531 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1532 unsigned int mm_idx
= 0;
1533 char **nargv
= argv
;
1535 int orig_db_level
= db_level
;
1537 if (! ISDB (DB_MAKEFILES
))
1540 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1542 /* Remove any makefiles we don't want to try to update.
1543 Also record the current modtimes so we can compare them later. */
1545 register struct dep
*d
, *last
;
1550 register struct file
*f
= d
->file
;
1551 if (f
->double_colon
)
1552 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1554 if (f
->deps
== 0 && f
->cmds
!= 0)
1556 /* This makefile is a :: target with commands, but
1557 no dependencies. So, it will always be remade.
1558 This might well cause an infinite loop, so don't
1559 try to remake it. (This will only happen if
1560 your makefiles are written exceptionally
1561 stupidly; but if you work for Athena, that's how
1562 you write your makefiles.) */
1565 (_("Makefile `%s' might loop; not remaking it.\n"),
1569 read_makefiles
= d
->next
;
1571 last
->next
= d
->next
;
1573 /* Free the storage. */
1576 d
= last
== 0 ? read_makefiles
: last
->next
;
1581 if (f
== NULL
|| !f
->double_colon
)
1583 makefile_mtimes
= (FILE_TIMESTAMP
*)
1584 xrealloc ((char *) makefile_mtimes
,
1585 (mm_idx
+ 1) * sizeof (FILE_TIMESTAMP
));
1586 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1593 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1594 define_makeflags (1, 1);
1596 switch (update_goal_chain (read_makefiles
, 1))
1600 #define BOGUS_UPDATE_STATUS 0
1601 assert (BOGUS_UPDATE_STATUS
);
1609 /* Failed to update. Figure out if we care. */
1611 /* Nonzero if any makefile was successfully remade. */
1613 /* Nonzero if any makefile we care about failed
1614 in updating or could not be found at all. */
1616 register unsigned int i
;
1619 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
1621 /* Reset the considered flag; we may need to look at the file
1622 again to print an error. */
1623 d
->file
->considered
= 0;
1625 if (d
->file
->updated
)
1627 /* This makefile was updated. */
1628 if (d
->file
->update_status
== 0)
1630 /* It was successfully updated. */
1631 any_remade
|= (file_mtime_no_search (d
->file
)
1632 != makefile_mtimes
[i
]);
1634 else if (! (d
->changed
& RM_DONTCARE
))
1636 FILE_TIMESTAMP mtime
;
1637 /* The update failed and this makefile was not
1638 from the MAKEFILES variable, so we care. */
1639 error (NILF
, _("Failed to remake makefile `%s'."),
1641 mtime
= file_mtime_no_search (d
->file
);
1642 any_remade
|= (mtime
!= (FILE_TIMESTAMP
) -1
1643 && mtime
!= makefile_mtimes
[i
]);
1647 /* This makefile was not found at all. */
1648 if (! (d
->changed
& RM_DONTCARE
))
1650 /* This is a makefile we care about. See how much. */
1651 if (d
->changed
& RM_INCLUDED
)
1652 /* An included makefile. We don't need
1653 to die, but we do want to complain. */
1655 _("Included makefile `%s' was not found."),
1659 /* A normal makefile. We must die later. */
1660 error (NILF
, _("Makefile `%s' was not found"),
1666 /* Reset this to empty so we get the right error message below. */
1678 /* Updated successfully. Re-exec ourselves. */
1680 remove_intermediates (0);
1682 if (print_data_base_flag
)
1685 log_working_directory (0);
1689 /* These names might have changed. */
1690 register unsigned int i
, j
= 0;
1691 for (i
= 1; i
< argc
; ++i
)
1692 if (strneq (argv
[i
], "-f", 2)) /* XXX */
1694 char *p
= &argv
[i
][2];
1696 argv
[++i
] = makefiles
->list
[j
];
1698 argv
[i
] = concat ("-f", makefiles
->list
[j
], "");
1703 /* Add -o option for the stdin temporary file, if necessary. */
1706 nargv
= (char **) xmalloc ((nargc
+ 2) * sizeof (char *));
1707 bcopy ((char *) argv
, (char *) nargv
, argc
* sizeof (char *));
1708 nargv
[nargc
++] = concat ("-o", stdin_nm
, "");
1712 if (directories
!= 0 && directories
->idx
> 0)
1715 if (directory_before_chdir
!= 0)
1717 if (chdir (directory_before_chdir
) < 0)
1719 perror_with_name ("chdir", "");
1728 fatal (NILF
, _("Couldn't change back to original directory."));
1732 for (p
= environ
; *p
!= 0; ++p
)
1733 if (strneq (*p
, "MAKELEVEL=", 10))
1735 /* The SGI compiler apparently can't understand
1736 the concept of storing the result of a function
1737 in something other than a local variable. */
1739 sgi_loses
= (char *) alloca (40);
1741 sprintf (*p
, "MAKELEVEL=%u", makelevel
);
1749 len
= GetVar ("MAKELEVEL", buffer
, sizeof (buffer
), GVF_GLOBAL_ONLY
);
1753 sprintf (buffer
, "%u", makelevel
);
1754 SetVar ("MAKELEVEL", buffer
, -1, GVF_GLOBAL_ONLY
);
1759 if (ISDB (DB_BASIC
))
1762 fputs (_("Re-executing:"), stdout
);
1763 for (p
= nargv
; *p
!= 0; ++p
)
1771 /* Close the dup'd jobserver pipe if we opened one. */
1776 exec_command (nargv
, environ
);
1778 exec_command (nargv
);
1784 db_level
= orig_db_level
;
1787 /* Set up `MAKEFLAGS' again for the normal targets. */
1788 define_makeflags (1, 0);
1790 /* If there is a temp file from reading a makefile from stdin, get rid of
1792 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
1793 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
1798 /* If there were no command-line goals, use the default. */
1801 if (default_goal_file
!= 0)
1803 goals
= (struct dep
*) xmalloc (sizeof (struct dep
));
1806 goals
->file
= default_goal_file
;
1814 if (read_makefiles
== 0)
1815 fatal (NILF
, _("No targets specified and no makefile found"));
1817 fatal (NILF
, _("No targets"));
1820 /* Update the goals. */
1822 DB (DB_BASIC
, (_("Updating goal targets....\n")));
1824 switch (update_goal_chain (goals
, 0))
1827 /* Nothing happened. */
1829 /* Updated successfully. */
1830 status
= EXIT_SUCCESS
;
1833 /* Updating failed. POSIX.2 specifies exit status >1 for this;
1834 but in VMS, there is only success and failure. */
1835 status
= EXIT_FAILURE
? 2 : EXIT_FAILURE
;
1838 /* We are under -q and would run some commands. */
1839 status
= EXIT_FAILURE
;
1845 /* If we detected some clock skew, generate one last warning */
1846 if (clock_skew_detected
)
1848 _("warning: Clock skew detected. Your build may be incomplete."));
1857 /* Parsing of arguments, decoding of switches. */
1859 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
1860 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
1861 (sizeof (long_option_aliases
) /
1862 sizeof (long_option_aliases
[0]))];
1864 /* Fill in the string and vector for getopt. */
1870 register unsigned int i
;
1872 if (options
[0] != '\0')
1878 /* Return switch and non-switch args in order, regardless of
1879 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
1882 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
1884 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
1885 switches
[i
].long_name
);
1886 long_options
[i
].flag
= 0;
1887 long_options
[i
].val
= switches
[i
].c
;
1888 if (short_option (switches
[i
].c
))
1889 *p
++ = switches
[i
].c
;
1890 switch (switches
[i
].type
)
1895 long_options
[i
].has_arg
= no_argument
;
1901 if (short_option (switches
[i
].c
))
1903 if (switches
[i
].noarg_value
!= 0)
1905 if (short_option (switches
[i
].c
))
1907 long_options
[i
].has_arg
= optional_argument
;
1910 long_options
[i
].has_arg
= required_argument
;
1915 for (c
= 0; c
< (sizeof (long_option_aliases
) /
1916 sizeof (long_option_aliases
[0]));
1918 long_options
[i
++] = long_option_aliases
[c
];
1919 long_options
[i
].name
= 0;
1923 handle_non_switch_argument (arg
, env
)
1927 /* Non-option argument. It might be a variable definition. */
1929 if (arg
[0] == '-' && arg
[1] == '\0')
1930 /* Ignore plain `-' for compatibility. */
1932 v
= try_variable_definition (0, arg
, o_command
, 0);
1935 /* It is indeed a variable definition. Record a pointer to
1936 the variable for later use in define_makeflags. */
1937 struct command_variable
*cv
1938 = (struct command_variable
*) xmalloc (sizeof (*cv
));
1940 cv
->next
= command_variables
;
1941 command_variables
= cv
;
1945 /* Not an option or variable definition; it must be a goal
1946 target! Enter it as a file and add it to the dep chain of
1948 struct file
*f
= enter_command_line_file (arg
);
1953 goals
= (struct dep
*) xmalloc (sizeof (struct dep
));
1958 lastgoal
->next
= (struct dep
*) xmalloc (sizeof (struct dep
));
1959 lastgoal
= lastgoal
->next
;
1965 /* Add this target name to the MAKECMDGOALS variable. */
1969 v
= lookup_variable ("MAKECMDGOALS", 12);
1974 /* Paste the old and new values together */
1975 unsigned int oldlen
, newlen
;
1977 oldlen
= strlen (v
->value
);
1978 newlen
= strlen (f
->name
);
1979 value
= (char *) alloca (oldlen
+ 1 + newlen
+ 1);
1980 bcopy (v
->value
, value
, oldlen
);
1981 value
[oldlen
] = ' ';
1982 bcopy (f
->name
, &value
[oldlen
+ 1], newlen
+ 1);
1984 define_variable ("MAKECMDGOALS", 12, value
, o_default
, 0);
1989 /* Print a nice usage method. */
1995 register const struct command_switch
*cs
;
1998 if (print_version_flag
)
2001 usageto
= bad
? stderr
: stdout
;
2003 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2005 fputs (_("Options:\n"), usageto
);
2006 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2008 char buf
[1024], shortarg
[50], longarg
[50], *p
;
2010 if (!cs
->description
|| cs
->description
[0] == '-')
2013 switch (long_options
[cs
- switches
].has_arg
)
2016 shortarg
[0] = longarg
[0] = '\0';
2018 case required_argument
:
2019 sprintf (longarg
, "=%s", cs
->argdesc
);
2020 sprintf (shortarg
, " %s", cs
->argdesc
);
2022 case optional_argument
:
2023 sprintf (longarg
, "[=%s]", cs
->argdesc
);
2024 sprintf (shortarg
, " [%s]", cs
->argdesc
);
2030 if (short_option (cs
->c
))
2032 sprintf (buf
, " -%c%s", cs
->c
, shortarg
);
2035 if (cs
->long_name
!= 0)
2038 sprintf (p
, "%s--%s%s",
2039 !short_option (cs
->c
) ? " " : ", ",
2040 cs
->long_name
, longarg
);
2042 for (i
= 0; i
< (sizeof (long_option_aliases
) /
2043 sizeof (long_option_aliases
[0]));
2045 if (long_option_aliases
[i
].val
== cs
->c
)
2047 sprintf (p
, ", --%s%s",
2048 long_option_aliases
[i
].name
, longarg
);
2053 const struct command_switch
*ncs
= cs
;
2054 while ((++ncs
)->c
!= '\0')
2055 if (ncs
->description
2056 && ncs
->description
[0] == '-'
2057 && ncs
->description
[1] == cs
->c
)
2059 /* This is another switch that does the same
2060 one as the one we are processing. We want
2061 to list them all together on one line. */
2062 sprintf (p
, ", -%c%s", ncs
->c
, shortarg
);
2064 if (ncs
->long_name
!= 0)
2066 sprintf (p
, ", --%s%s", ncs
->long_name
, longarg
);
2072 if (p
- buf
> DESCRIPTION_COLUMN
- 2)
2073 /* The list of option names is too long to fit on the same
2074 line with the description, leaving at least two spaces.
2075 Print it on its own line instead. */
2077 fprintf (usageto
, "%s\n", buf
);
2081 fprintf (usageto
, "%*s%s.\n",
2082 - DESCRIPTION_COLUMN
,
2083 buf
, cs
->description
);
2086 fprintf (usageto
, _("\nReport bugs to <bug-make@gnu.org>.\n"));
2089 /* Decode switches from ARGC and ARGV.
2090 They came from the environment if ENV is nonzero. */
2093 decode_switches (argc
, argv
, env
)
2099 register const struct command_switch
*cs
;
2100 register struct stringlist
*sl
;
2103 /* getopt does most of the parsing for us.
2104 First, get its vectors set up. */
2108 /* Let getopt produce error messages for the command line,
2109 but not for options from the environment. */
2111 /* Reset getopt's state. */
2114 while (optind
< argc
)
2116 /* Parse the next argument. */
2117 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2119 /* End of arguments, or "--" marker seen. */
2122 /* An argument not starting with a dash. */
2123 handle_non_switch_argument (optarg
, env
);
2125 /* Bad option. We will print a usage message and die later.
2126 But continue to parse the other options so the user can
2127 see all he did wrong. */
2130 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2133 /* Whether or not we will actually do anything with
2134 this switch. We test this individually inside the
2135 switch below rather than just once outside it, so that
2136 options which are to be ignored still consume args. */
2137 int doit
= !env
|| cs
->env
;
2150 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2158 optarg
= cs
->noarg_value
;
2160 sl
= *(struct stringlist
**) cs
->value_ptr
;
2163 sl
= (struct stringlist
*)
2164 xmalloc (sizeof (struct stringlist
));
2167 sl
->list
= (char **) xmalloc (5 * sizeof (char *));
2168 *(struct stringlist
**) cs
->value_ptr
= sl
;
2170 else if (sl
->idx
== sl
->max
- 1)
2173 sl
->list
= (char **)
2174 xrealloc ((char *) sl
->list
,
2175 sl
->max
* sizeof (char *));
2177 sl
->list
[sl
->idx
++] = optarg
;
2178 sl
->list
[sl
->idx
] = 0;
2182 if (optarg
== 0 && argc
> optind
2183 && ISDIGIT (argv
[optind
][0]))
2184 optarg
= argv
[optind
++];
2191 int i
= atoi (optarg
);
2195 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2200 *(unsigned int *) cs
->value_ptr
= i
;
2203 *(unsigned int *) cs
->value_ptr
2204 = *(unsigned int *) cs
->noarg_value
;
2209 if (optarg
== 0 && optind
< argc
2210 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2211 optarg
= argv
[optind
++];
2214 *(double *) cs
->value_ptr
2215 = (optarg
!= 0 ? atof (optarg
)
2216 : *(double *) cs
->noarg_value
);
2222 /* We've found the switch. Stop looking. */
2227 /* There are no more options according to getting getopt, but there may
2228 be some arguments left. Since we have asked for non-option arguments
2229 to be returned in order, this only happens when there is a "--"
2230 argument to prevent later arguments from being options. */
2231 while (optind
< argc
)
2232 handle_non_switch_argument (argv
[optind
++], env
);
2235 if (!env
&& (bad
|| print_usage_flag
))
2242 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2243 We do this by chopping the value into a vector of words, prepending a
2244 dash to the first word if it lacks one, and passing the vector to
2248 decode_env_switches (envar
, len
)
2252 char *varref
= (char *) alloca (2 + len
+ 2);
2257 /* Get the variable's value. */
2260 bcopy (envar
, &varref
[2], len
);
2261 varref
[2 + len
] = ')';
2262 varref
[2 + len
+ 1] = '\0';
2263 value
= variable_expand (varref
);
2265 /* Skip whitespace, and check for an empty value. */
2266 value
= next_token (value
);
2267 len
= strlen (value
);
2271 /* Allocate a vector that is definitely big enough. */
2272 argv
= (char **) alloca ((1 + len
+ 1) * sizeof (char *));
2274 /* Allocate a buffer to copy the value into while we split it into words
2275 and unquote it. We must use permanent storage for this because
2276 decode_switches may store pointers into the passed argument words. */
2277 p
= (char *) xmalloc (2 * len
);
2279 /* getopt will look at the arguments starting at ARGV[1].
2280 Prepend a spacer word. */
2284 while (*value
!= '\0')
2286 if (*value
== '\\' && value
[1] != '\0')
2287 ++value
; /* Skip the backslash. */
2288 else if (isblank (*value
))
2290 /* End of the word. */
2295 while (isblank (*value
));
2303 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2304 /* The first word doesn't start with a dash and isn't a variable
2305 definition. Add a dash and pass it along to decode_switches. We
2306 need permanent storage for this in case decode_switches saves
2307 pointers into the value. */
2308 argv
[1] = concat ("-", argv
[1], "");
2310 /* Parse those words. */
2311 decode_switches (argc
, argv
, 1);
2314 /* Quote the string IN so that it will be interpreted as a single word with
2315 no magic by decode_env_switches; also double dollar signs to avoid
2316 variable expansion in make itself. Write the result into OUT, returning
2317 the address of the next character to be written.
2318 Allocating space for OUT twice the length of IN is always sufficient. */
2321 quote_for_env (out
, in
)
2328 else if (isblank (*in
) || *in
== '\\')
2336 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2337 command switches. Include options with args if ALL is nonzero.
2338 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2341 define_makeflags (all
, makefile
)
2344 static const char ref
[] = "$(MAKEOVERRIDES)";
2345 static const char posixref
[] = "$(-*-command-variables-*-)";
2346 register const struct command_switch
*cs
;
2352 /* We will construct a linked list of `struct flag's describing
2353 all the flags which need to go in MAKEFLAGS. Then, once we
2354 know how many there are and their lengths, we can put them all
2355 together in a string. */
2360 const struct command_switch
*cs
;
2363 struct flag
*flags
= 0;
2364 unsigned int flagslen
= 0;
2365 #define ADD_FLAG(ARG, LEN) \
2367 struct flag *new = (struct flag *) alloca (sizeof (struct flag)); \
2370 new->next = flags; \
2372 if (new->arg == 0) \
2373 ++flagslen; /* Just a single flag letter. */ \
2375 flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \
2376 if (!short_option (cs->c)) \
2377 /* This switch has no single-letter version, so we use the long. */ \
2378 flagslen += 2 + strlen (cs->long_name); \
2381 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2382 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2393 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2394 && (cs
->default_value
== 0
2395 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2402 if ((cs
->default_value
!= 0
2403 && (*(unsigned int *) cs
->value_ptr
2404 == *(unsigned int *) cs
->default_value
)))
2406 else if (cs
->noarg_value
!= 0
2407 && (*(unsigned int *) cs
->value_ptr
==
2408 *(unsigned int *) cs
->noarg_value
))
2409 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2410 else if (cs
->c
== 'j')
2411 /* Special case for `-j'. */
2415 char *buf
= (char *) alloca (30);
2416 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2417 ADD_FLAG (buf
, strlen (buf
));
2426 if (cs
->default_value
!= 0
2427 && (*(double *) cs
->value_ptr
2428 == *(double *) cs
->default_value
))
2430 else if (cs
->noarg_value
!= 0
2431 && (*(double *) cs
->value_ptr
2432 == *(double *) cs
->noarg_value
))
2433 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2436 char *buf
= (char *) alloca (100);
2437 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2438 ADD_FLAG (buf
, strlen (buf
));
2447 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2450 /* Add the elements in reverse order, because
2451 all the flags get reversed below; and the order
2452 matters for some switches (like -I). */
2453 register unsigned int i
= sl
->idx
;
2455 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2461 flagslen
+= 4 + sizeof posixref
; /* Four more for the possible " -- ". */
2465 /* Construct the value in FLAGSTRING.
2466 We allocate enough space for a preceding dash and trailing null. */
2467 flagstring
= (char *) alloca (1 + flagslen
+ 1);
2468 bzero (flagstring
, 1 + flagslen
+ 1);
2474 /* Add the flag letter or name to the string. */
2475 if (short_option (flags
->cs
->c
))
2476 *p
++ = flags
->cs
->c
;
2485 strcpy (p
, flags
->cs
->long_name
);
2488 if (flags
->arg
!= 0)
2490 /* A flag that takes an optional argument which in this case is
2491 omitted is specified by ARG being "". We must distinguish
2492 because a following flag appended without an intervening " -"
2493 is considered the arg for the first. */
2494 if (flags
->arg
[0] != '\0')
2496 /* Add its argument too. */
2497 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2498 p
= quote_for_env (p
, flags
->arg
);
2501 /* Write a following space and dash, for the next flag. */
2505 else if (!short_option (flags
->cs
->c
))
2508 /* Long options must each go in their own word,
2509 so we write the following space and dash. */
2513 flags
= flags
->next
;
2516 /* Define MFLAGS before appending variable definitions. */
2518 if (p
== &flagstring
[1])
2520 flagstring
[0] = '\0';
2521 else if (p
[-1] == '-')
2523 /* Kill the final space and dash. */
2528 /* Terminate the string. */
2531 /* Since MFLAGS is not parsed for flags, there is no reason to
2532 override any makefile redefinition. */
2533 (void) define_variable ("MFLAGS", 6, flagstring
, o_env
, 1);
2535 if (all
&& command_variables
!= 0)
2537 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2538 command-line variable definitions. */
2540 if (p
== &flagstring
[1])
2541 /* No flags written, so elide the leading dash already written. */
2545 /* Separate the variables from the switches with a "--" arg. */
2548 /* We did not already write a trailing " -". */
2552 /* There is a trailing " -"; fill it out to " -- ". */
2557 /* Copy in the string. */
2560 bcopy (posixref
, p
, sizeof posixref
- 1);
2561 p
+= sizeof posixref
- 1;
2565 bcopy (ref
, p
, sizeof ref
- 1);
2566 p
+= sizeof ref
- 1;
2569 else if (p
== &flagstring
[1])
2574 else if (p
[-1] == '-')
2575 /* Kill the final space and dash. */
2577 /* Terminate the string. */
2580 v
= define_variable ("MAKEFLAGS", 9,
2581 /* If there are switches, omit the leading dash
2582 unless it is a single long option with two
2584 &flagstring
[(flagstring
[0] == '-'
2585 && flagstring
[1] != '-')
2587 /* This used to use o_env, but that lost when a
2588 makefile defined MAKEFLAGS. Makefiles set
2589 MAKEFLAGS to add switches, but we still want
2590 to redefine its value with the full set of
2591 switches. Of course, an override or command
2592 definition will still take precedence. */
2595 /* The first time we are called, set MAKEFLAGS to always be exported.
2596 We should not do this again on the second call, because that is
2597 after reading makefiles which might have done `unexport MAKEFLAGS'. */
2598 v
->export
= v_export
;
2601 /* Print version information. */
2606 extern char *make_host
;
2607 static int printed_version
= 0;
2609 char *precede
= print_data_base_flag
? "# " : "";
2611 if (printed_version
)
2612 /* Do it only once. */
2615 printf ("%sGNU Make version %s", precede
, version_string
);
2616 if (remote_description
!= 0 && *remote_description
!= '\0')
2617 printf ("-%s", remote_description
);
2619 printf (_(", by Richard Stallman and Roland McGrath.\n\
2621 %sCopyright (C) 1988, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99\n\
2622 %s\tFree Software Foundation, Inc.\n\
2623 %sThis is free software; see the source for copying conditions.\n\
2624 %sThere is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\
2625 %sPARTICULAR PURPOSE.\n\n\
2626 %sReport bugs to <bug-make@gnu.org>.\n\n"),
2628 precede
, precede
, precede
, precede
, precede
, precede
);
2630 printed_version
= 1;
2632 /* Flush stdout so the user doesn't have to wait to see the
2633 version information while things are thought about. */
2637 /* Print a bunch of information about this and that. */
2644 when
= time ((time_t *) 0);
2645 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
2647 print_variable_data_base ();
2648 print_dir_data_base ();
2649 print_rule_data_base ();
2650 print_file_data_base ();
2651 print_vpath_data_base ();
2653 when
= time ((time_t *) 0);
2654 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
2657 /* Exit with STATUS, cleaning up as necessary. */
2663 static char dying
= 0;
2671 if (print_version_flag
)
2674 /* Wait for children to die. */
2675 for (err
= status
!= 0; job_slots_used
> 0; err
= 0)
2676 reap_children (1, err
);
2678 /* Let the remote job module clean up its state. */
2681 /* Remove the intermediate files. */
2682 remove_intermediates (0);
2684 if (print_data_base_flag
)
2687 /* Try to move back to the original directory. This is essential on
2688 MS-DOS (where there is really only one process), and on Unix it
2689 puts core files in the original directory instead of the -C
2690 directory. Must wait until after remove_intermediates(), or unlinks
2691 of relative pathnames fail. */
2692 if (directory_before_chdir
!= 0)
2693 chdir (directory_before_chdir
);
2695 log_working_directory (0);
2701 /* Write a message indicating that we've just entered or
2702 left (according to ENTERING) the current directory. */
2705 log_working_directory (entering
)
2708 static int entered
= 0;
2709 char *msg
= entering
? _("Entering") : _("Leaving");
2711 /* Print nothing without the flag. Don't print the entering message
2712 again if we already have. Don't print the leaving message if we
2713 haven't printed the entering message. */
2714 if (! print_directory_flag
|| entering
== entered
)
2719 if (print_data_base_flag
)
2720 fputs ("# ", stdout
);
2723 printf ("%s: %s ", program
, msg
);
2725 printf ("%s[%u]: %s ", program
, makelevel
, msg
);
2727 if (starting_directory
== 0)
2728 puts (_("an unknown directory"));
2730 printf (_("directory `%s'\n"), starting_directory
);