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 ();
72 static void print_data_base
PARAMS ((void));
73 static void print_version
PARAMS ((void));
74 static void decode_switches
PARAMS ((int argc
, char **argv
, int env
));
75 static void decode_env_switches
PARAMS ((char *envar
, unsigned int len
));
76 static void define_makeflags
PARAMS ((int all
, int makefile
));
77 static char *quote_for_env
PARAMS ((char *out
, char *in
));
79 /* The structure that describes an accepted command switch. */
83 int c
; /* The switch character. */
85 enum /* Type of the value. */
87 flag
, /* Turn int flag on. */
88 flag_off
, /* Turn int flag off. */
89 string
, /* One string per switch. */
90 positive_int
, /* A positive integer. */
91 floating
, /* A floating-point number (double). */
95 char *value_ptr
; /* Pointer to the value-holding variable. */
97 unsigned int env
:1; /* Can come from MAKEFLAGS. */
98 unsigned int toenv
:1; /* Should be put in MAKEFLAGS. */
99 unsigned int no_makefile
:1; /* Don't propagate when remaking makefiles. */
101 char *noarg_value
; /* Pointer to value used if no argument is given. */
102 char *default_value
;/* Pointer to default value. */
104 char *long_name
; /* Long option name. */
105 char *argdesc
; /* Descriptive word for argument. */
106 char *description
; /* Description for usage message. */
107 /* 0 means internal; don't display help. */
110 /* True if C is a switch value that corresponds to a short option. */
112 #define short_option(c) ((c) <= CHAR_MAX)
114 /* The structure used to hold the list of strings given
115 in command switches of a type that takes string arguments. */
119 char **list
; /* Nil-terminated list of strings. */
120 unsigned int idx
; /* Index into above. */
121 unsigned int max
; /* Number of pointers allocated. */
125 /* The recognized command switches. */
127 /* Nonzero means do not print commands to be executed (-s). */
131 /* Nonzero means just touch the files
132 that would appear to need remaking (-t) */
136 /* Nonzero means just print what commands would need to be executed,
137 don't actually execute them (-n). */
141 /* Print debugging info (--debug). */
143 static struct stringlist
*db_flags
;
144 static int debug_flag
= 0;
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 N_("Ignored for compatibility") },
260 { 'C', string
, (char *) &directories
, 0, 0, 0, 0, 0,
261 "directory", N_("DIRECTORY"),
262 N_("Change to DIRECTORY before doing anything") },
263 { 'd', flag
, (char *) &debug_flag
, 1, 1, 0, 0, 0,
265 N_("Print lots of debugging information") },
266 { CHAR_MAX
+1, string
, (char *) &db_flags
, 1, 1, 0,
268 "debug", N_("FLAGS"),
269 N_("Print various types of debugging information") },
271 { 'D', flag
, (char *) &suspend_flag
, 1, 1, 0, 0, 0,
272 "suspend-for-debug", 0,
273 N_("Suspend process to allow a debugger to attach") },
275 { 'e', flag
, (char *) &env_overrides
, 1, 1, 0, 0, 0,
276 "environment-overrides", 0,
277 N_("Environment variables override makefiles") },
278 { 'f', string
, (char *) &makefiles
, 0, 0, 0, 0, 0,
280 N_("Read FILE as a makefile") },
281 { 'h', flag
, (char *) &print_usage_flag
, 0, 0, 0, 0, 0,
283 N_("Print this message and exit") },
284 { 'i', flag
, (char *) &ignore_errors_flag
, 1, 1, 0, 0, 0,
286 N_("Ignore errors from commands") },
287 { 'I', string
, (char *) &include_directories
, 1, 1, 0, 0, 0,
288 "include-dir", N_("DIRECTORY"),
289 N_("Search DIRECTORY for included makefiles") },
291 positive_int
, (char *) &job_slots
, 1, 1, 0,
292 (char *) &inf_jobs
, (char *) &default_job_slots
,
294 N_("Allow N jobs at once; infinite jobs with no arg") },
295 { CHAR_MAX
+2, string
, (char *) &jobserver_fds
, 1, 1, 0, 0, 0,
298 { 'k', flag
, (char *) &keep_going_flag
, 1, 1, 0,
299 0, (char *) &default_keep_going_flag
,
301 N_("Keep going when some targets can't be made") },
303 { 'l', floating
, (char *) &max_load_average
, 1, 1, 0,
304 (char *) &default_load_average
, (char *) &default_load_average
,
306 N_("Don't start multiple jobs unless load is below N") },
308 { 'l', positive_int
, (char *) &max_load_average
, 1, 1, 0,
309 (char *) &default_load_average
, (char *) &default_load_average
,
311 N_("Don't start multiple jobs unless load is below N") },
313 { 'm', ignore
, 0, 0, 0, 0, 0, 0,
316 { 'n', flag
, (char *) &just_print_flag
, 1, 1, 1, 0, 0,
318 N_("Don't actually run any commands; just print them") },
319 { 'o', string
, (char *) &old_files
, 0, 0, 0, 0, 0,
320 "old-file", N_("FILE"),
321 N_("Consider FILE to be very old and don't remake it") },
322 { 'p', flag
, (char *) &print_data_base_flag
, 1, 1, 0, 0, 0,
323 "print-data-base", 0,
324 N_("Print make's internal database") },
325 { 'q', flag
, (char *) &question_flag
, 1, 1, 1, 0, 0,
327 N_("Run no commands; exit status says if up to date") },
328 { 'r', flag
, (char *) &no_builtin_rules_flag
, 1, 1, 0, 0, 0,
329 "no-builtin-rules", 0,
330 N_("Disable the built-in implicit rules") },
331 { 'R', flag
, (char *) &no_builtin_variables_flag
, 1, 1, 0, 0, 0,
332 "no-builtin-variables", 0,
333 N_("Disable the built-in variable settings") },
334 { 's', flag
, (char *) &silent_flag
, 1, 1, 0, 0, 0,
336 N_("Don't echo commands") },
337 { 'S', flag_off
, (char *) &keep_going_flag
, 1, 1, 0,
338 0, (char *) &default_keep_going_flag
,
340 N_("Turns off -k") },
341 { 't', flag
, (char *) &touch_flag
, 1, 1, 1, 0, 0,
343 N_("Touch targets instead of remaking them") },
344 { 'v', flag
, (char *) &print_version_flag
, 1, 1, 0, 0, 0,
346 N_("Print the version number of make and exit") },
347 { 'w', flag
, (char *) &print_directory_flag
, 1, 1, 0, 0, 0,
348 "print-directory", 0,
349 N_("Print the current directory") },
350 { CHAR_MAX
+3, flag
, (char *) &inhibit_print_directory_flag
, 1, 1, 0, 0, 0,
351 "no-print-directory", 0,
352 N_("Turn off -w, even if it was turned on implicitly") },
353 { 'W', string
, (char *) &new_files
, 0, 0, 0, 0, 0,
354 "what-if", N_("FILE"),
355 N_("Consider FILE to be infinitely new") },
356 { CHAR_MAX
+4, flag
, (char *) &warn_undefined_variables_flag
, 1, 1, 0, 0, 0,
357 "warn-undefined-variables", 0,
358 N_("Warn when an undefined variable is referenced") },
362 /* Secondary long names for options. */
364 static struct option long_option_aliases
[] =
366 { "quiet", no_argument
, 0, 's' },
367 { "stop", no_argument
, 0, 'S' },
368 { "new-file", required_argument
, 0, 'W' },
369 { "assume-new", required_argument
, 0, 'W' },
370 { "assume-old", required_argument
, 0, 'o' },
371 { "max-load", optional_argument
, 0, 'l' },
372 { "dry-run", no_argument
, 0, 'n' },
373 { "recon", no_argument
, 0, 'n' },
374 { "makefile", required_argument
, 0, 'f' },
377 /* The usage message prints the descriptions of options starting in
378 this column. Make sure it leaves enough room for the longest
379 description to fit in less than 80 characters. */
381 #define DESCRIPTION_COLUMN 30
383 /* List of goal targets. */
385 static struct dep
*goals
, *lastgoal
;
387 /* List of variables which were defined on the command line
388 (or, equivalently, in MAKEFLAGS). */
390 struct command_variable
392 struct command_variable
*next
;
393 struct variable
*variable
;
395 static struct command_variable
*command_variables
;
397 /* The name we were invoked with. */
401 /* Our current directory before processing any -C options. */
403 char *directory_before_chdir
;
405 /* Our current directory after processing all -C options. */
407 char *starting_directory
;
409 /* Value of the MAKELEVEL variable at startup (or 0). */
411 unsigned int makelevel
;
413 /* First file defined in the makefile whose name does not
414 start with `.'. This is the default to remake if the
415 command line does not specify. */
417 struct file
*default_goal_file
;
419 /* Pointer to structure for the file .DEFAULT
420 whose commands are used for any file that has none of its own.
421 This is zero if the makefiles do not define .DEFAULT. */
423 struct file
*default_file
;
425 /* Nonzero if we have seen the magic `.POSIX' target.
426 This turns on pedantic compliance with POSIX.2. */
430 /* Nonzero if we have seen the `.NOTPARALLEL' target.
431 This turns off parallel builds for this invocation of make. */
435 /* Nonzero if some rule detected clock skew; we keep track so (a) we only
436 print one warning about it during the run, and (b) we can print a final
437 warning at the end of the run. */
439 int clock_skew_detected
;
441 /* Mask of signals that are being caught with fatal_error_signal. */
444 sigset_t fatal_signal_set
;
446 #ifdef HAVE_SIGSETMASK
447 int fatal_signal_mask
;
452 enter_command_line_file (name
)
456 fatal (NILF
, _("empty string invalid as file name"));
460 char *expanded
= tilde_expand (name
);
462 name
= expanded
; /* Memory leak; I don't care. */
465 /* This is also done in parse_file_seq, so this is redundant
466 for names read from makefiles. It is here for names passed
467 on the command line. */
468 while (name
[0] == '.' && name
[1] == '/' && name
[2] != '\0')
472 /* Skip following slashes: ".//foo" is "foo", not "/foo". */
478 /* It was all slashes! Move back to the dot and truncate
479 it after the first slash, so it becomes just "./". */
482 while (name
[0] != '.');
486 return enter_file (xstrdup (name
));
489 /* Toggle -d on receipt of SIGUSR1. */
492 debug_signal_handler (sig
)
495 db_level
= db_level
? DB_NONE
: DB_BASIC
;
499 decode_debug_flags ()
509 for (pp
=db_flags
->list
; *pp
; ++pp
)
515 switch (tolower (p
[0]))
521 db_level
|= DB_BASIC
;
524 db_level
|= DB_BASIC
| DB_IMPLICIT
;
530 db_level
|= DB_BASIC
| DB_MAKEFILES
;
533 db_level
|= DB_BASIC
| DB_VERBOSE
;
536 fatal (NILF
, _("unknown debug level specification `%s'"), p
);
539 while (*(++p
) != '\0')
540 if (*p
== ',' || *p
== ' ')
553 * HANDLE runtime exceptions by avoiding a requestor on the GUI. Capture
554 * exception and print it to stderr instead.
556 * If ! DB_VERBOSE, just print a simple message and exit.
557 * If DB_VERBOSE, print a more verbose message.
558 * If compiled for DEBUG, let exception pass through to GUI so that
559 * debuggers can attach.
562 handle_runtime_exceptions( struct _EXCEPTION_POINTERS
*exinfo
)
564 PEXCEPTION_RECORD exrec
= exinfo
->ExceptionRecord
;
565 LPSTR cmdline
= GetCommandLine();
566 LPSTR prg
= strtok(cmdline
, " ");
570 LPTSTR lpszStrings
[1];
573 if (! ISDB (DB_VERBOSE
))
576 _("%s: Interrupt/Exception caught (code = 0x%x, addr = 0x%x)\n"),
577 prg
, exrec
->ExceptionCode
, exrec
->ExceptionAddress
);
578 fprintf(stderr
, errmsg
);
583 _("\nUnhandled exception filter called from program %s\nExceptionCode = %x\nExceptionFlags = %x\nExceptionAddress = %x\n"),
584 prg
, exrec
->ExceptionCode
, exrec
->ExceptionFlags
,
585 exrec
->ExceptionAddress
);
587 if (exrec
->ExceptionCode
== EXCEPTION_ACCESS_VIOLATION
588 && exrec
->NumberParameters
>= 2)
589 sprintf(&errmsg
[strlen(errmsg
)],
590 (exrec
->ExceptionInformation
[0]
591 ? _("Access violation: write operation at address %x\n")
592 : _("Access violation: read operation at address %x\n")),
593 exrec
->ExceptionInformation
[1]);
595 /* turn this on if we want to put stuff in the event log too */
597 hEventSource
= RegisterEventSource(NULL
, "GNU Make");
598 lpszStrings
[0] = errmsg
;
600 if (hEventSource
!= NULL
)
602 ReportEvent(hEventSource
, /* handle of event source */
603 EVENTLOG_ERROR_TYPE
, /* event type */
604 0, /* event category */
606 NULL
, /* current user's SID */
607 1, /* strings in lpszStrings */
608 0, /* no bytes of raw data */
609 lpszStrings
, /* array of error strings */
610 NULL
); /* no raw data */
612 (VOID
) DeregisterEventSource(hEventSource
);
616 /* Write the error to stderr too */
617 fprintf(stderr
, errmsg
);
620 return EXCEPTION_CONTINUE_SEARCH
;
623 return (255); /* not reached */
628 * On WIN32 systems we don't have the luxury of a /bin directory that
629 * is mapped globally to every drive mounted to the system. Since make could
630 * be invoked from any drive, and we don't want to propogate /bin/sh
631 * to every single drive. Allow ourselves a chance to search for
632 * a value for default shell here (if the default path does not exist).
636 find_and_set_default_shell(char *token
)
641 extern char *default_shell
;
644 search_token
= default_shell
;
646 search_token
= token
;
648 if (!no_default_sh_exe
&&
649 (token
== NULL
|| !strcmp(search_token
, default_shell
))) {
650 /* no new information, path already set or known */
652 } else if (file_exists_p(search_token
)) {
653 /* search token path was found */
654 sprintf(sh_path
, "%s", search_token
);
655 default_shell
= xstrdup(w32ify(sh_path
,0));
657 (_("find_and_set_shell setting default_shell = %s\n"), default_shell
));
661 struct variable
*v
= lookup_variable ("Path", 4);
664 * Search Path for shell
670 ep
= strchr(p
, PATH_SEPARATOR_CHAR
);
675 if (dir_file_exists_p(p
, search_token
)) {
676 sprintf(sh_path
, "%s/%s", p
, search_token
);
677 default_shell
= xstrdup(w32ify(sh_path
,0));
679 *ep
= PATH_SEPARATOR_CHAR
;
684 *ep
= PATH_SEPARATOR_CHAR
;
688 ep
= strchr(p
, PATH_SEPARATOR_CHAR
);
691 /* be sure to check last element of Path */
692 if (p
&& *p
&& dir_file_exists_p(p
, search_token
)) {
693 sprintf(sh_path
, "%s/%s", p
, search_token
);
694 default_shell
= xstrdup(w32ify(sh_path
,0));
700 (_("find_and_set_shell path search set default_shell = %s\n"),
706 if (!unixy_shell
&& sh_found
&&
707 (strstr(default_shell
, "sh") || strstr(default_shell
, "SH"))) {
709 batch_mode_shell
= 0;
712 #ifdef BATCH_MODE_ONLY_SHELL
713 batch_mode_shell
= 1;
718 #endif /* WINDOWS32 */
723 msdos_return_to_initial_directory ()
725 if (directory_before_chdir
)
726 chdir (directory_before_chdir
);
730 extern char *mktemp ();
731 extern int mkstemp ();
734 open_tmpfile(name
, template)
736 const char *template;
740 #if defined HAVE_MKSTEMP || defined HAVE_MKTEMP
741 # define TEMPLATE_LEN strlen (template)
743 # define TEMPLATE_LEN L_tmpnam
745 *name
= xmalloc (TEMPLATE_LEN
+ 1);
746 strcpy (*name
, template);
748 #if defined HAVE_MKSTEMP && defined HAVE_FDOPEN
749 /* It's safest to use mkstemp(), if we can. */
750 fd
= mkstemp (*name
);
753 return fdopen (fd
, "w");
756 (void) mktemp (*name
);
758 (void) tmpnam (*name
);
762 /* Can't use mkstemp(), but guard against a race condition. */
763 fd
= open (*name
, O_CREAT
|O_EXCL
|O_WRONLY
, 0600);
766 return fdopen (fd
, "w");
768 /* Not secure, but what can we do? */
769 return fopen (*name
, "w");
777 main (argc
, argv
, envp
)
782 int main (int argc
, char ** argv
)
785 static char *stdin_nm
= 0;
786 register struct file
*f
;
787 register unsigned int i
;
789 struct dep
*read_makefiles
;
790 PATH_VAR (current_directory
);
792 char *unix_path
= NULL
;
793 char *windows32_path
= NULL
;
795 SetUnhandledExceptionFilter(handle_runtime_exceptions
);
797 /* start off assuming we have no shell */
799 no_default_sh_exe
= 1;
802 default_goal_file
= 0;
805 #if defined (__MSDOS__) && !defined (_POSIX_SOURCE)
806 /* Request the most powerful version of `system', to
807 make up for the dumb default shell. */
808 __system_flags
= (__system_redirect
810 | __system_allow_multiple_cmds
811 | __system_allow_long_cmds
812 | __system_handle_null_commands
813 | __system_emulate_chdir
);
817 /* Set up gettext/internationalization support. */
818 setlocale (LC_ALL
, "");
819 bindtextdomain (PACKAGE
, LOCALEDIR
);
820 textdomain (PACKAGE
);
822 #if !defined (HAVE_STRSIGNAL) && !defined (HAVE_SYS_SIGLIST)
824 extern void signame_init ();
830 sigemptyset (&fatal_signal_set
);
831 #define ADD_SIG(sig) sigaddset (&fatal_signal_set, sig)
833 #ifdef HAVE_SIGSETMASK
834 fatal_signal_mask
= 0;
835 #define ADD_SIG(sig) fatal_signal_mask |= sigmask (sig)
841 #define FATAL_SIG(sig) \
842 if (signal ((sig), fatal_error_signal) == SIG_IGN) \
843 (void) signal ((sig), SIG_IGN); \
857 FATAL_SIG (SIGDANGER
);
868 /* Do not ignore the child-death signal. This must be done before
869 any children could possibly be created; otherwise, the wait
870 functions won't work on systems with the SVR4 ECHILD brain
871 damage, if our invoker is ignoring this signal. */
873 #ifdef HAVE_WAIT_NOHANG
875 (void) signal (SIGCHLD
, SIG_DFL
);
877 # if defined SIGCLD && SIGCLD != SIGCHLD
878 (void) signal (SIGCLD
, SIG_DFL
);
882 /* Make sure stdout is line-buffered. */
884 #ifdef HAVE_SETLINEBUF
887 #ifndef SETVBUF_REVERSED
888 setvbuf (stdout
, (char *) 0, _IOLBF
, BUFSIZ
);
889 #else /* setvbuf not reversed. */
890 /* Some buggy systems lose if we pass 0 instead of allocating ourselves. */
891 setvbuf (stdout
, _IOLBF
, xmalloc (BUFSIZ
), BUFSIZ
);
892 #endif /* setvbuf reversed. */
893 #endif /* setlinebuf missing. */
895 /* Figure out where this program lives. */
899 if (argv
[0][0] == '\0')
904 program
= strrchr (argv
[0], ']');
906 program
= strrchr (argv
[0], '/');
910 program
= strrchr (argv
[0], '\\');
913 /* Some weird environments might pass us argv[0] with
914 both kinds of slashes; we must find the rightmost. */
915 char *p
= strrchr (argv
[0], '\\');
916 if (p
&& p
> program
)
919 if (program
== 0 && argv
[0][1] == ':')
920 program
= argv
[0] + 1;
928 /* Set up to access user data (files). */
931 /* Figure out where we are. */
934 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
936 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
940 perror_with_name ("getcwd: ", "");
942 error (NILF
, "getwd: %s", current_directory
);
944 current_directory
[0] = '\0';
945 directory_before_chdir
= 0;
948 directory_before_chdir
= xstrdup (current_directory
);
950 /* Make sure we will return to the initial directory, come what may. */
951 atexit (msdos_return_to_initial_directory
);
954 /* Read in variables from the environment. It is important that this be
955 done before $(MAKE) is figured out so its definitions will not be
956 from the environment. */
959 for (i
= 0; envp
[i
] != 0; ++i
)
962 register char *ep
= envp
[i
];
964 /* by default, everything gets defined and exported */
970 if (!unix_path
&& strneq(envp
[i
], "PATH=", 5))
972 else if (!windows32_path
&& !strnicmp(envp
[i
], "Path=", 5)) {
973 do_not_define
= 1; /* it gets defined after loop exits */
974 windows32_path
= ep
+1;
977 /* The result of pointer arithmetic is cast to unsigned int for
978 machines where ptrdiff_t is a different size that doesn't widen
981 define_variable (envp
[i
], (unsigned int) (ep
- envp
[i
]),
983 /* Force exportation of every variable culled from the environment.
984 We used to rely on target_environment's v_default code to do this.
985 But that does not work for the case where an environment variable
986 is redefined in a makefile with `override'; it should then still
987 be exported, because it was originally in the environment. */
992 * Make sure that this particular spelling of 'Path' is available
995 define_variable("Path", 4, windows32_path
, o_env
, 1)->export
= v_export
;
997 define_variable("Path", 4, unix_path
, o_env
, 1)->export
= v_export
;
999 define_variable("Path", 4, "", o_env
, 1)->export
= v_export
;
1002 * PATH defaults to Path iff PATH not found and Path is found.
1004 if (!unix_path
&& windows32_path
)
1005 define_variable("PATH", 4, windows32_path
, o_env
, 1)->export
= v_export
;
1007 #else /* For Amiga, read the ENV: device, ignoring all dirs */
1009 BPTR env
, file
, old
;
1012 __aligned
struct FileInfoBlock fib
;
1014 env
= Lock ("ENV:", ACCESS_READ
);
1017 old
= CurrentDir (DupLock(env
));
1018 Examine (env
, &fib
);
1020 while (ExNext (env
, &fib
))
1022 if (fib
.fib_DirEntryType
< 0) /* File */
1024 /* Define an empty variable. It will be filled in
1025 variable_lookup(). Makes startup quite a bit
1027 define_variable (fib
.fib_FileName
,
1028 strlen (fib
.fib_FileName
),
1029 "", o_env
, 1)->export
= v_export
;
1033 UnLock(CurrentDir(old
));
1038 /* Decode the switches. */
1040 decode_env_switches ("MAKEFLAGS", 9);
1042 /* People write things like:
1043 MFLAGS="CC=gcc -pipe" "CFLAGS=-g"
1044 and we set the -p, -i and -e switches. Doesn't seem quite right. */
1045 decode_env_switches ("MFLAGS", 6);
1047 decode_switches (argc
, argv
, 0);
1050 fprintf(stderr
, "%s (pid = %d)\n", argv
[0], GetCurrentProcessId());
1051 fprintf(stderr
, _("%s is suspending for 30 seconds..."), argv
[0]);
1053 fprintf(stderr
, _("done sleep(30). Continuing.\n"));
1057 decode_debug_flags ();
1059 /* Print version information. */
1061 if (print_version_flag
|| print_data_base_flag
|| db_level
)
1064 /* `make --version' is supposed to just print the version and exit. */
1065 if (print_version_flag
)
1069 /* Set the "MAKE_COMMAND" variable to the name we were invoked with.
1070 (If it is a relative pathname with a slash, prepend our directory name
1071 so the result will run the same program regardless of the current dir.
1072 If it is a name with no slash, we can only hope that PATH did not
1073 find it in the current directory.) */
1076 * Convert from backslashes to forward slashes for
1077 * programs like sh which don't like them. Shouldn't
1078 * matter if the path is one way or the other for
1081 if (strpbrk(argv
[0], "/:\\") ||
1082 strstr(argv
[0], "..") ||
1083 strneq(argv
[0], "//", 2))
1084 argv
[0] = xstrdup(w32ify(argv
[0],1));
1085 #else /* WINDOWS32 */
1087 if (strchr (argv
[0], '\\'))
1091 argv
[0] = xstrdup (argv
[0]);
1092 for (p
= argv
[0]; *p
; p
++)
1096 /* If argv[0] is not in absolute form, prepend the current
1097 directory. This can happen when Make is invoked by another DJGPP
1098 program that uses a non-absolute name. */
1099 if (current_directory
[0] != '\0'
1101 && (argv
[0][0] != '/' && (argv
[0][0] == '\0' || argv
[0][1] != ':')))
1102 argv
[0] = concat (current_directory
, "/", argv
[0]);
1103 #else /* !__MSDOS__ */
1104 if (current_directory
[0] != '\0'
1105 && argv
[0] != 0 && argv
[0][0] != '/' && strchr (argv
[0], '/') != 0)
1106 argv
[0] = concat (current_directory
, "/", argv
[0]);
1107 #endif /* !__MSDOS__ */
1108 #endif /* WINDOWS32 */
1111 /* The extra indirection through $(MAKE_COMMAND) is done
1112 for hysterical raisins. */
1113 (void) define_variable ("MAKE_COMMAND", 12, argv
[0], o_default
, 0);
1114 (void) define_variable ("MAKE", 4, "$(MAKE_COMMAND)", o_default
, 1);
1116 if (command_variables
!= 0)
1118 struct command_variable
*cv
;
1120 unsigned int len
= 0;
1123 /* Figure out how much space will be taken up by the command-line
1124 variable definitions. */
1125 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1128 len
+= 2 * strlen (v
->name
);
1132 len
+= 2 * strlen (v
->value
);
1136 /* Now allocate a buffer big enough and fill it. */
1137 p
= value
= (char *) alloca (len
);
1138 for (cv
= command_variables
; cv
!= 0; cv
= cv
->next
)
1141 p
= quote_for_env (p
, v
->name
);
1145 p
= quote_for_env (p
, v
->value
);
1148 p
[-1] = '\0'; /* Kill the final space and terminate. */
1150 /* Define an unchangeable variable with a name that no POSIX.2
1151 makefile could validly use for its own variable. */
1152 (void) define_variable ("-*-command-variables-*-", 23,
1153 value
, o_automatic
, 0);
1155 /* Define the variable; this will not override any user definition.
1156 Normally a reference to this variable is written into the value of
1157 MAKEFLAGS, allowing the user to override this value to affect the
1158 exported value of MAKEFLAGS. In POSIX-pedantic mode, we cannot
1159 allow the user's setting of MAKEOVERRIDES to affect MAKEFLAGS, so
1160 a reference to this hidden variable is written instead. */
1161 (void) define_variable ("MAKEOVERRIDES", 13,
1162 "${-*-command-variables-*-}", o_env
, 1);
1165 /* If there were -C flags, move ourselves about. */
1166 if (directories
!= 0)
1167 for (i
= 0; directories
->list
[i
] != 0; ++i
)
1169 char *dir
= directories
->list
[i
];
1172 char *expanded
= tilde_expand (dir
);
1176 if (chdir (dir
) < 0)
1177 pfatal_with_name (dir
);
1178 if (dir
!= directories
->list
[i
])
1184 * THIS BLOCK OF CODE MUST COME AFTER chdir() CALL ABOVE IN ORDER
1185 * TO NOT CONFUSE THE DEPENDENCY CHECKING CODE IN implicit.c.
1187 * The functions in dir.c can incorrectly cache information for "."
1188 * before we have changed directory and this can cause file
1189 * lookups to fail because the current directory (.) was pointing
1190 * at the wrong place when it was first evaluated.
1192 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1194 #endif /* WINDOWS32 */
1195 /* Figure out the level of recursion. */
1197 struct variable
*v
= lookup_variable ("MAKELEVEL", 9);
1198 if (v
!= 0 && *v
->value
!= '\0' && *v
->value
!= '-')
1199 makelevel
= (unsigned int) atoi (v
->value
);
1204 /* Except under -s, always do -w in sub-makes and under -C. */
1205 if (!silent_flag
&& (directories
!= 0 || makelevel
> 0))
1206 print_directory_flag
= 1;
1208 /* Let the user disable that with --no-print-directory. */
1209 if (inhibit_print_directory_flag
)
1210 print_directory_flag
= 0;
1212 /* If -R was given, set -r too (doesn't make sense otherwise!) */
1213 if (no_builtin_variables_flag
)
1214 no_builtin_rules_flag
= 1;
1216 /* Construct the list of include directories to search. */
1218 construct_include_path (include_directories
== 0 ? (char **) 0
1219 : include_directories
->list
);
1221 /* Figure out where we are now, after chdir'ing. */
1222 if (directories
== 0)
1223 /* We didn't move, so we're still in the same place. */
1224 starting_directory
= current_directory
;
1228 if (getcwd_fs (current_directory
, GET_PATH_MAX
) == 0)
1230 if (getcwd (current_directory
, GET_PATH_MAX
) == 0)
1234 perror_with_name ("getcwd: ", "");
1236 error (NILF
, "getwd: %s", current_directory
);
1238 starting_directory
= 0;
1241 starting_directory
= current_directory
;
1244 (void) define_variable ("CURDIR", 6, current_directory
, o_default
, 0);
1246 /* Read any stdin makefiles into temporary files. */
1250 register unsigned int i
;
1251 for (i
= 0; i
< makefiles
->idx
; ++i
)
1252 if (makefiles
->list
[i
][0] == '-' && makefiles
->list
[i
][1] == '\0')
1254 /* This makefile is standard input. Since we may re-exec
1255 and thus re-read the makefiles, we read standard input
1256 into a temporary file and read from that. */
1260 fatal (NILF
, _("Makefile from standard input specified twice."));
1263 # define TMP_TEMPLATE "sys$scratch:GmXXXXXX"
1265 # define TMP_TEMPLATE "/tmp/GmXXXXXX"
1268 outfile
= open_tmpfile (&stdin_nm
, TMP_TEMPLATE
);
1270 pfatal_with_name (_("fopen (temporary file)"));
1271 while (!feof (stdin
))
1274 unsigned int n
= fread (buf
, 1, sizeof (buf
), stdin
);
1275 if (n
> 0 && fwrite (buf
, 1, n
, outfile
) != n
)
1276 pfatal_with_name (_("fwrite (temporary file)"));
1278 (void) fclose (outfile
);
1280 /* Replace the name that read_all_makefiles will
1281 see with the name of the temporary file. */
1282 makefiles
->list
[i
] = xstrdup (stdin_nm
);
1284 /* Make sure the temporary file will not be remade. */
1285 f
= enter_file (stdin_nm
);
1287 f
->update_status
= 0;
1288 f
->command_state
= cs_finished
;
1289 /* Can't be intermediate, or it'll be removed too early for
1291 f
->intermediate
= 0;
1296 #if defined(MAKE_JOBSERVER) || !defined(HAVE_WAIT_NOHANG)
1297 /* Set up to handle children dying. This must be done before
1298 reading in the makefiles so that `shell' function calls will work.
1300 If we don't have a hanging wait we have to fall back to old, broken
1301 functionality here and rely on the signal handler and counting
1304 If we're using the jobs pipe we need a signal handler so that
1305 SIGCHLD is not ignored; we need it to interrupt the read(2) of the
1306 jobserver pipe in job.c if we're waiting for a token.
1308 If none of these are true, we don't need a signal handler at all. */
1310 extern RETSIGTYPE child_handler
PARAMS ((int sig
));
1312 # if defined HAVE_SIGACTION
1313 struct sigaction sa
;
1315 bzero ((char *)&sa
, sizeof (struct sigaction
));
1316 sa
.sa_handler
= child_handler
;
1317 # if defined SA_INTERRUPT
1318 /* This is supposed to be the default, but what the heck... */
1319 sa
.sa_flags
= SA_INTERRUPT
;
1321 # define HANDLESIG(s) sigaction (s, &sa, NULL)
1323 # define HANDLESIG(s) signal (s, child_handler)
1326 /* OK, now actually install the handlers. */
1327 # if defined SIGCHLD
1328 (void) HANDLESIG (SIGCHLD
);
1330 # if defined SIGCLD && SIGCLD != SIGCHLD
1331 (void) HANDLESIG (SIGCLD
);
1336 /* Let the user send us SIGUSR1 to toggle the -d flag during the run. */
1338 (void) signal (SIGUSR1
, debug_signal_handler
);
1341 /* Define the initial list of suffixes for old-style rules. */
1343 set_default_suffixes ();
1345 /* Define the file rules for the built-in suffix rules. These will later
1346 be converted into pattern rules. We used to do this in
1347 install_default_implicit_rules, but since that happens after reading
1348 makefiles, it results in the built-in pattern rules taking precedence
1349 over makefile-specified suffix rules, which is wrong. */
1351 install_default_suffix_rules ();
1353 /* Define some internal and special variables. */
1355 define_automatic_variables ();
1357 /* Set up the MAKEFLAGS and MFLAGS variables
1358 so makefiles can look at them. */
1360 define_makeflags (0, 0);
1362 /* Define the default variables. */
1363 define_default_variables ();
1365 /* Read all the makefiles. */
1367 default_file
= enter_file (".DEFAULT");
1370 = read_all_makefiles (makefiles
== 0 ? (char **) 0 : makefiles
->list
);
1373 /* look one last time after reading all Makefiles */
1374 if (no_default_sh_exe
)
1375 no_default_sh_exe
= !find_and_set_default_shell(NULL
);
1377 if (no_default_sh_exe
&& job_slots
!= 1) {
1378 error (NILF
, _("Do not specify -j or --jobs if sh.exe is not available."));
1379 error (NILF
, _("Resetting make for single job mode."));
1382 #endif /* WINDOWS32 */
1385 /* We need to know what kind of shell we will be using. */
1387 extern int _is_unixy_shell (const char *_path
);
1388 struct variable
*shv
= lookup_variable ("SHELL", 5);
1389 extern int unixy_shell
;
1390 extern char *default_shell
;
1392 if (shv
&& *shv
->value
)
1394 char *shell_path
= recursively_expand(shv
);
1396 if (shell_path
&& _is_unixy_shell (shell_path
))
1401 default_shell
= shell_path
;
1404 #endif /* __MSDOS__ */
1406 /* Decode switches again, in case the variables were set by the makefile. */
1407 decode_env_switches ("MAKEFLAGS", 9);
1409 decode_env_switches ("MFLAGS", 6);
1416 _("Parallel jobs (-j) are not supported on this platform."));
1417 error (NILF
, _("Resetting to single job (-j1) mode."));
1422 #ifdef MAKE_JOBSERVER
1423 /* If the jobserver-fds option is seen, make sure that -j is reasonable. */
1429 for (i
=1; i
< jobserver_fds
->idx
; ++i
)
1430 if (!streq (jobserver_fds
->list
[0], jobserver_fds
->list
[i
]))
1431 fatal (NILF
, _("internal error: multiple --jobserver-fds options"));
1433 /* Now parse the fds string and make sure it has the proper format. */
1435 cp
= jobserver_fds
->list
[0];
1437 if (sscanf (cp
, "%d,%d", &job_fds
[0], &job_fds
[1]) != 2)
1439 _("internal error: invalid --jobserver-fds string `%s'"), cp
);
1441 /* The combination of a pipe + !job_slots means we're using the
1442 jobserver. If !job_slots and we don't have a pipe, we can start
1443 infinite jobs. If we see both a pipe and job_slots >0 that means the
1444 user set -j explicitly. This is broken; in this case obey the user
1445 (ignore the jobserver pipe for this make) but print a message. */
1449 _("warning: -jN forced in submake: disabling jobserver mode."));
1451 /* Create a duplicate pipe, that will be closed in the SIGCHLD
1452 handler. If this fails with EBADF, the parent has closed the pipe
1453 on us because it didn't think we were a submake. If so, print a
1454 warning then default to -j1. */
1456 else if ((job_rfd
= dup (job_fds
[0])) < 0)
1459 pfatal_with_name (_("dup jobserver"));
1462 _("warning: jobserver unavailable: using -j1. Add `+' to parent make rule."));
1470 job_fds
[0] = job_fds
[1] = -1;
1471 free (jobserver_fds
->list
);
1472 free (jobserver_fds
);
1477 /* If we have >1 slot but no jobserver-fds, then we're a top-level make.
1478 Set up the pipe and install the fds option for our children. */
1484 if (pipe (job_fds
) < 0 || (job_rfd
= dup (job_fds
[0])) < 0)
1485 pfatal_with_name (_("creating jobs pipe"));
1487 /* Every make assumes that it always has one job it can run. For the
1488 submakes it's the token they were given by their parent. For the
1489 top make, we just subtract one from the number the user wants. We
1490 want job_slots to be 0 to indicate we're using the jobserver. */
1493 while (write (job_fds
[1], &c
, 1) != 1)
1495 pfatal_with_name (_("init jobserver pipe"));
1497 /* Fill in the jobserver_fds struct for our children. */
1499 jobserver_fds
= (struct stringlist
*)
1500 xmalloc (sizeof (struct stringlist
));
1501 jobserver_fds
->list
= (char **) xmalloc (sizeof (char *));
1502 jobserver_fds
->list
[0] = xmalloc ((sizeof ("1024")*2)+1);
1504 sprintf (jobserver_fds
->list
[0], "%d,%d", job_fds
[0], job_fds
[1]);
1505 jobserver_fds
->idx
= 1;
1506 jobserver_fds
->max
= 1;
1510 /* Set up MAKEFLAGS and MFLAGS again, so they will be right. */
1512 define_makeflags (1, 0);
1514 /* Make each `struct dep' point at the `struct file' for the file
1515 depended on. Also do magic for special targets. */
1519 /* Convert old-style suffix rules to pattern rules. It is important to
1520 do this before installing the built-in pattern rules below, so that
1521 makefile-specified suffix rules take precedence over built-in pattern
1524 convert_to_pattern ();
1526 /* Install the default implicit pattern rules.
1527 This used to be done before reading the makefiles.
1528 But in that case, built-in pattern rules were in the chain
1529 before user-defined ones, so they matched first. */
1531 install_default_implicit_rules ();
1533 /* Compute implicit rule limits. */
1535 count_implicit_rule_limits ();
1537 /* Construct the listings of directories in VPATH lists. */
1539 build_vpath_lists ();
1541 /* Mark files given with -o flags as very old (00:00:01.00 Jan 1, 1970)
1542 and as having been updated already, and files given with -W flags as
1543 brand new (time-stamp as far as possible into the future). */
1546 for (p
= old_files
->list
; *p
!= 0; ++p
)
1548 f
= enter_command_line_file (*p
);
1549 f
->last_mtime
= f
->mtime_before_update
= (FILE_TIMESTAMP
) 1;
1551 f
->update_status
= 0;
1552 f
->command_state
= cs_finished
;
1557 for (p
= new_files
->list
; *p
!= 0; ++p
)
1559 f
= enter_command_line_file (*p
);
1560 f
->last_mtime
= f
->mtime_before_update
= NEW_MTIME
;
1564 /* Initialize the remote job module. */
1567 if (read_makefiles
!= 0)
1569 /* Update any makefiles if necessary. */
1571 FILE_TIMESTAMP
*makefile_mtimes
= 0;
1572 unsigned int mm_idx
= 0;
1573 char **nargv
= argv
;
1575 int orig_db_level
= db_level
;
1577 if (! ISDB (DB_MAKEFILES
))
1580 DB (DB_BASIC
, (_("Updating makefiles....\n")));
1582 /* Remove any makefiles we don't want to try to update.
1583 Also record the current modtimes so we can compare them later. */
1585 register struct dep
*d
, *last
;
1590 register struct file
*f
= d
->file
;
1591 if (f
->double_colon
)
1592 for (f
= f
->double_colon
; f
!= NULL
; f
= f
->prev
)
1594 if (f
->deps
== 0 && f
->cmds
!= 0)
1596 /* This makefile is a :: target with commands, but
1597 no dependencies. So, it will always be remade.
1598 This might well cause an infinite loop, so don't
1599 try to remake it. (This will only happen if
1600 your makefiles are written exceptionally
1601 stupidly; but if you work for Athena, that's how
1602 you write your makefiles.) */
1605 (_("Makefile `%s' might loop; not remaking it.\n"),
1609 read_makefiles
= d
->next
;
1611 last
->next
= d
->next
;
1613 /* Free the storage. */
1616 d
= last
== 0 ? read_makefiles
: last
->next
;
1621 if (f
== NULL
|| !f
->double_colon
)
1623 makefile_mtimes
= (FILE_TIMESTAMP
*)
1624 xrealloc ((char *) makefile_mtimes
,
1625 (mm_idx
+ 1) * sizeof (FILE_TIMESTAMP
));
1626 makefile_mtimes
[mm_idx
++] = file_mtime_no_search (d
->file
);
1633 /* Set up `MAKEFLAGS' specially while remaking makefiles. */
1634 define_makeflags (1, 1);
1636 switch (update_goal_chain (read_makefiles
, 1))
1640 #define BOGUS_UPDATE_STATUS 0
1641 assert (BOGUS_UPDATE_STATUS
);
1649 /* Failed to update. Figure out if we care. */
1651 /* Nonzero if any makefile was successfully remade. */
1653 /* Nonzero if any makefile we care about failed
1654 in updating or could not be found at all. */
1656 register unsigned int i
;
1659 for (i
= 0, d
= read_makefiles
; d
!= 0; ++i
, d
= d
->next
)
1661 /* Reset the considered flag; we may need to look at the file
1662 again to print an error. */
1663 d
->file
->considered
= 0;
1665 if (d
->file
->updated
)
1667 /* This makefile was updated. */
1668 if (d
->file
->update_status
== 0)
1670 /* It was successfully updated. */
1671 any_remade
|= (file_mtime_no_search (d
->file
)
1672 != makefile_mtimes
[i
]);
1674 else if (! (d
->changed
& RM_DONTCARE
))
1676 FILE_TIMESTAMP mtime
;
1677 /* The update failed and this makefile was not
1678 from the MAKEFILES variable, so we care. */
1679 error (NILF
, _("Failed to remake makefile `%s'."),
1681 mtime
= file_mtime_no_search (d
->file
);
1682 any_remade
|= (mtime
!= (FILE_TIMESTAMP
) -1
1683 && mtime
!= makefile_mtimes
[i
]);
1687 /* This makefile was not found at all. */
1688 if (! (d
->changed
& RM_DONTCARE
))
1690 /* This is a makefile we care about. See how much. */
1691 if (d
->changed
& RM_INCLUDED
)
1692 /* An included makefile. We don't need
1693 to die, but we do want to complain. */
1695 _("Included makefile `%s' was not found."),
1699 /* A normal makefile. We must die later. */
1700 error (NILF
, _("Makefile `%s' was not found"),
1706 /* Reset this to empty so we get the right error message below. */
1718 /* Updated successfully. Re-exec ourselves. */
1720 remove_intermediates (0);
1722 if (print_data_base_flag
)
1725 log_working_directory (0);
1729 /* These names might have changed. */
1730 register unsigned int i
, j
= 0;
1731 for (i
= 1; i
< argc
; ++i
)
1732 if (strneq (argv
[i
], "-f", 2)) /* XXX */
1734 char *p
= &argv
[i
][2];
1736 argv
[++i
] = makefiles
->list
[j
];
1738 argv
[i
] = concat ("-f", makefiles
->list
[j
], "");
1743 /* Add -o option for the stdin temporary file, if necessary. */
1746 nargv
= (char **) xmalloc ((nargc
+ 2) * sizeof (char *));
1747 bcopy ((char *) argv
, (char *) nargv
, argc
* sizeof (char *));
1748 nargv
[nargc
++] = concat ("-o", stdin_nm
, "");
1752 if (directories
!= 0 && directories
->idx
> 0)
1755 if (directory_before_chdir
!= 0)
1757 if (chdir (directory_before_chdir
) < 0)
1759 perror_with_name ("chdir", "");
1768 fatal (NILF
, _("Couldn't change back to original directory."));
1772 for (p
= environ
; *p
!= 0; ++p
)
1773 if (strneq (*p
, "MAKELEVEL=", 10))
1775 /* The SGI compiler apparently can't understand
1776 the concept of storing the result of a function
1777 in something other than a local variable. */
1779 sgi_loses
= (char *) alloca (40);
1781 sprintf (*p
, "MAKELEVEL=%u", makelevel
);
1789 len
= GetVar ("MAKELEVEL", buffer
, sizeof (buffer
), GVF_GLOBAL_ONLY
);
1793 sprintf (buffer
, "%u", makelevel
);
1794 SetVar ("MAKELEVEL", buffer
, -1, GVF_GLOBAL_ONLY
);
1799 if (ISDB (DB_BASIC
))
1802 fputs (_("Re-executing:"), stdout
);
1803 for (p
= nargv
; *p
!= 0; ++p
)
1811 /* Close the dup'd jobserver pipe if we opened one. */
1816 exec_command (nargv
, environ
);
1818 exec_command (nargv
);
1824 db_level
= orig_db_level
;
1827 /* Set up `MAKEFLAGS' again for the normal targets. */
1828 define_makeflags (1, 0);
1830 /* If there is a temp file from reading a makefile from stdin, get rid of
1832 if (stdin_nm
&& unlink (stdin_nm
) < 0 && errno
!= ENOENT
)
1833 perror_with_name (_("unlink (temporary file): "), stdin_nm
);
1838 /* If there were no command-line goals, use the default. */
1841 if (default_goal_file
!= 0)
1843 goals
= (struct dep
*) xmalloc (sizeof (struct dep
));
1846 goals
->file
= default_goal_file
;
1854 if (read_makefiles
== 0)
1855 fatal (NILF
, _("No targets specified and no makefile found"));
1857 fatal (NILF
, _("No targets"));
1860 /* Update the goals. */
1862 DB (DB_BASIC
, (_("Updating goal targets....\n")));
1864 switch (update_goal_chain (goals
, 0))
1867 /* Nothing happened. */
1869 /* Updated successfully. */
1870 status
= EXIT_SUCCESS
;
1873 /* Updating failed. POSIX.2 specifies exit status >1 for this;
1874 but in VMS, there is only success and failure. */
1875 status
= EXIT_FAILURE
? 2 : EXIT_FAILURE
;
1878 /* We are under -q and would run some commands. */
1879 status
= EXIT_FAILURE
;
1885 /* If we detected some clock skew, generate one last warning */
1886 if (clock_skew_detected
)
1888 _("warning: Clock skew detected. Your build may be incomplete."));
1897 /* Parsing of arguments, decoding of switches. */
1899 static char options
[1 + sizeof (switches
) / sizeof (switches
[0]) * 3];
1900 static struct option long_options
[(sizeof (switches
) / sizeof (switches
[0])) +
1901 (sizeof (long_option_aliases
) /
1902 sizeof (long_option_aliases
[0]))];
1904 /* Fill in the string and vector for getopt. */
1910 register unsigned int i
;
1912 if (options
[0] != '\0')
1918 /* Return switch and non-switch args in order, regardless of
1919 POSIXLY_CORRECT. Non-switch args are returned as option 1. */
1922 for (i
= 0; switches
[i
].c
!= '\0'; ++i
)
1924 long_options
[i
].name
= (switches
[i
].long_name
== 0 ? "" :
1925 switches
[i
].long_name
);
1926 long_options
[i
].flag
= 0;
1927 long_options
[i
].val
= switches
[i
].c
;
1928 if (short_option (switches
[i
].c
))
1929 *p
++ = switches
[i
].c
;
1930 switch (switches
[i
].type
)
1935 long_options
[i
].has_arg
= no_argument
;
1941 if (short_option (switches
[i
].c
))
1943 if (switches
[i
].noarg_value
!= 0)
1945 if (short_option (switches
[i
].c
))
1947 long_options
[i
].has_arg
= optional_argument
;
1950 long_options
[i
].has_arg
= required_argument
;
1955 for (c
= 0; c
< (sizeof (long_option_aliases
) /
1956 sizeof (long_option_aliases
[0]));
1958 long_options
[i
++] = long_option_aliases
[c
];
1959 long_options
[i
].name
= 0;
1963 handle_non_switch_argument (arg
, env
)
1967 /* Non-option argument. It might be a variable definition. */
1969 if (arg
[0] == '-' && arg
[1] == '\0')
1970 /* Ignore plain `-' for compatibility. */
1972 v
= try_variable_definition (0, arg
, o_command
, 0);
1975 /* It is indeed a variable definition. Record a pointer to
1976 the variable for later use in define_makeflags. */
1977 struct command_variable
*cv
1978 = (struct command_variable
*) xmalloc (sizeof (*cv
));
1980 cv
->next
= command_variables
;
1981 command_variables
= cv
;
1985 /* Not an option or variable definition; it must be a goal
1986 target! Enter it as a file and add it to the dep chain of
1988 struct file
*f
= enter_command_line_file (arg
);
1993 goals
= (struct dep
*) xmalloc (sizeof (struct dep
));
1998 lastgoal
->next
= (struct dep
*) xmalloc (sizeof (struct dep
));
1999 lastgoal
= lastgoal
->next
;
2005 /* Add this target name to the MAKECMDGOALS variable. */
2009 v
= lookup_variable ("MAKECMDGOALS", 12);
2014 /* Paste the old and new values together */
2015 unsigned int oldlen
, newlen
;
2017 oldlen
= strlen (v
->value
);
2018 newlen
= strlen (f
->name
);
2019 value
= (char *) alloca (oldlen
+ 1 + newlen
+ 1);
2020 bcopy (v
->value
, value
, oldlen
);
2021 value
[oldlen
] = ' ';
2022 bcopy (f
->name
, &value
[oldlen
+ 1], newlen
+ 1);
2024 define_variable ("MAKECMDGOALS", 12, value
, o_default
, 0);
2029 /* Print a nice usage method. */
2035 register const struct command_switch
*cs
;
2038 if (print_version_flag
)
2041 usageto
= bad
? stderr
: stdout
;
2043 fprintf (usageto
, _("Usage: %s [options] [target] ...\n"), program
);
2045 fputs (_("Options:\n"), usageto
);
2046 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2048 char buf
[1024], shortarg
[50], longarg
[50], *p
;
2050 if (!cs
->description
|| cs
->description
[0] == '-')
2053 switch (long_options
[cs
- switches
].has_arg
)
2056 shortarg
[0] = longarg
[0] = '\0';
2058 case required_argument
:
2059 sprintf (longarg
, "=%s", gettext (cs
->argdesc
));
2060 sprintf (shortarg
, " %s", gettext (cs
->argdesc
));
2062 case optional_argument
:
2063 sprintf (longarg
, "[=%s]", gettext (cs
->argdesc
));
2064 sprintf (shortarg
, " [%s]", gettext (cs
->argdesc
));
2070 if (short_option (cs
->c
))
2072 sprintf (buf
, " -%c%s", cs
->c
, shortarg
);
2075 if (cs
->long_name
!= 0)
2078 sprintf (p
, "%s--%s%s",
2079 !short_option (cs
->c
) ? " " : ", ",
2080 cs
->long_name
, longarg
);
2082 for (i
= 0; i
< (sizeof (long_option_aliases
) /
2083 sizeof (long_option_aliases
[0]));
2085 if (long_option_aliases
[i
].val
== cs
->c
)
2087 sprintf (p
, ", --%s%s",
2088 long_option_aliases
[i
].name
, longarg
);
2093 const struct command_switch
*ncs
= cs
;
2094 while ((++ncs
)->c
!= '\0')
2095 if (ncs
->description
2096 && ncs
->description
[0] == '-'
2097 && ncs
->description
[1] == cs
->c
)
2099 /* This is another switch that does the same
2100 one as the one we are processing. We want
2101 to list them all together on one line. */
2102 sprintf (p
, ", -%c%s", ncs
->c
, shortarg
);
2104 if (ncs
->long_name
!= 0)
2106 sprintf (p
, ", --%s%s", ncs
->long_name
, longarg
);
2112 if (p
- buf
> DESCRIPTION_COLUMN
- 2)
2113 /* The list of option names is too long to fit on the same
2114 line with the description, leaving at least two spaces.
2115 Print it on its own line instead. */
2117 fprintf (usageto
, "%s\n", buf
);
2121 fprintf (usageto
, "%*s%s.\n",
2122 - DESCRIPTION_COLUMN
,
2123 buf
, gettext (cs
->description
));
2126 fprintf (usageto
, _("\nReport bugs to <bug-make@gnu.org>.\n"));
2129 /* Decode switches from ARGC and ARGV.
2130 They came from the environment if ENV is nonzero. */
2133 decode_switches (argc
, argv
, env
)
2139 register const struct command_switch
*cs
;
2140 register struct stringlist
*sl
;
2143 /* getopt does most of the parsing for us.
2144 First, get its vectors set up. */
2148 /* Let getopt produce error messages for the command line,
2149 but not for options from the environment. */
2151 /* Reset getopt's state. */
2154 while (optind
< argc
)
2156 /* Parse the next argument. */
2157 c
= getopt_long (argc
, argv
, options
, long_options
, (int *) 0);
2159 /* End of arguments, or "--" marker seen. */
2162 /* An argument not starting with a dash. */
2163 handle_non_switch_argument (optarg
, env
);
2165 /* Bad option. We will print a usage message and die later.
2166 But continue to parse the other options so the user can
2167 see all he did wrong. */
2170 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2173 /* Whether or not we will actually do anything with
2174 this switch. We test this individually inside the
2175 switch below rather than just once outside it, so that
2176 options which are to be ignored still consume args. */
2177 int doit
= !env
|| cs
->env
;
2190 *(int *) cs
->value_ptr
= cs
->type
== flag
;
2198 optarg
= cs
->noarg_value
;
2200 sl
= *(struct stringlist
**) cs
->value_ptr
;
2203 sl
= (struct stringlist
*)
2204 xmalloc (sizeof (struct stringlist
));
2207 sl
->list
= (char **) xmalloc (5 * sizeof (char *));
2208 *(struct stringlist
**) cs
->value_ptr
= sl
;
2210 else if (sl
->idx
== sl
->max
- 1)
2213 sl
->list
= (char **)
2214 xrealloc ((char *) sl
->list
,
2215 sl
->max
* sizeof (char *));
2217 sl
->list
[sl
->idx
++] = optarg
;
2218 sl
->list
[sl
->idx
] = 0;
2222 if (optarg
== 0 && argc
> optind
2223 && ISDIGIT (argv
[optind
][0]))
2224 optarg
= argv
[optind
++];
2231 int i
= atoi (optarg
);
2235 error (NILF
, _("the `-%c' option requires a positive integral argument"),
2240 *(unsigned int *) cs
->value_ptr
= i
;
2243 *(unsigned int *) cs
->value_ptr
2244 = *(unsigned int *) cs
->noarg_value
;
2249 if (optarg
== 0 && optind
< argc
2250 && (ISDIGIT (argv
[optind
][0]) || argv
[optind
][0] == '.'))
2251 optarg
= argv
[optind
++];
2254 *(double *) cs
->value_ptr
2255 = (optarg
!= 0 ? atof (optarg
)
2256 : *(double *) cs
->noarg_value
);
2262 /* We've found the switch. Stop looking. */
2267 /* There are no more options according to getting getopt, but there may
2268 be some arguments left. Since we have asked for non-option arguments
2269 to be returned in order, this only happens when there is a "--"
2270 argument to prevent later arguments from being options. */
2271 while (optind
< argc
)
2272 handle_non_switch_argument (argv
[optind
++], env
);
2275 if (!env
&& (bad
|| print_usage_flag
))
2282 /* Decode switches from environment variable ENVAR (which is LEN chars long).
2283 We do this by chopping the value into a vector of words, prepending a
2284 dash to the first word if it lacks one, and passing the vector to
2288 decode_env_switches (envar
, len
)
2292 char *varref
= (char *) alloca (2 + len
+ 2);
2297 /* Get the variable's value. */
2300 bcopy (envar
, &varref
[2], len
);
2301 varref
[2 + len
] = ')';
2302 varref
[2 + len
+ 1] = '\0';
2303 value
= variable_expand (varref
);
2305 /* Skip whitespace, and check for an empty value. */
2306 value
= next_token (value
);
2307 len
= strlen (value
);
2311 /* Allocate a vector that is definitely big enough. */
2312 argv
= (char **) alloca ((1 + len
+ 1) * sizeof (char *));
2314 /* Allocate a buffer to copy the value into while we split it into words
2315 and unquote it. We must use permanent storage for this because
2316 decode_switches may store pointers into the passed argument words. */
2317 p
= (char *) xmalloc (2 * len
);
2319 /* getopt will look at the arguments starting at ARGV[1].
2320 Prepend a spacer word. */
2324 while (*value
!= '\0')
2326 if (*value
== '\\' && value
[1] != '\0')
2327 ++value
; /* Skip the backslash. */
2328 else if (isblank (*value
))
2330 /* End of the word. */
2335 while (isblank (*value
));
2343 if (argv
[1][0] != '-' && strchr (argv
[1], '=') == 0)
2344 /* The first word doesn't start with a dash and isn't a variable
2345 definition. Add a dash and pass it along to decode_switches. We
2346 need permanent storage for this in case decode_switches saves
2347 pointers into the value. */
2348 argv
[1] = concat ("-", argv
[1], "");
2350 /* Parse those words. */
2351 decode_switches (argc
, argv
, 1);
2354 /* Quote the string IN so that it will be interpreted as a single word with
2355 no magic by decode_env_switches; also double dollar signs to avoid
2356 variable expansion in make itself. Write the result into OUT, returning
2357 the address of the next character to be written.
2358 Allocating space for OUT twice the length of IN is always sufficient. */
2361 quote_for_env (out
, in
)
2368 else if (isblank (*in
) || *in
== '\\')
2376 /* Define the MAKEFLAGS and MFLAGS variables to reflect the settings of the
2377 command switches. Include options with args if ALL is nonzero.
2378 Don't include options with the `no_makefile' flag set if MAKEFILE. */
2381 define_makeflags (all
, makefile
)
2384 static const char ref
[] = "$(MAKEOVERRIDES)";
2385 static const char posixref
[] = "$(-*-command-variables-*-)";
2386 register const struct command_switch
*cs
;
2392 /* We will construct a linked list of `struct flag's describing
2393 all the flags which need to go in MAKEFLAGS. Then, once we
2394 know how many there are and their lengths, we can put them all
2395 together in a string. */
2400 const struct command_switch
*cs
;
2403 struct flag
*flags
= 0;
2404 unsigned int flagslen
= 0;
2405 #define ADD_FLAG(ARG, LEN) \
2407 struct flag *new = (struct flag *) alloca (sizeof (struct flag)); \
2410 new->next = flags; \
2412 if (new->arg == 0) \
2413 ++flagslen; /* Just a single flag letter. */ \
2415 flagslen += 1 + 1 + 1 + 1 + 3 * (LEN); /* " -x foo" */ \
2416 if (!short_option (cs->c)) \
2417 /* This switch has no single-letter version, so we use the long. */ \
2418 flagslen += 2 + strlen (cs->long_name); \
2421 for (cs
= switches
; cs
->c
!= '\0'; ++cs
)
2422 if (cs
->toenv
&& (!makefile
|| !cs
->no_makefile
))
2433 if (!*(int *) cs
->value_ptr
== (cs
->type
== flag_off
)
2434 && (cs
->default_value
== 0
2435 || *(int *) cs
->value_ptr
!= *(int *) cs
->default_value
))
2442 if ((cs
->default_value
!= 0
2443 && (*(unsigned int *) cs
->value_ptr
2444 == *(unsigned int *) cs
->default_value
)))
2446 else if (cs
->noarg_value
!= 0
2447 && (*(unsigned int *) cs
->value_ptr
==
2448 *(unsigned int *) cs
->noarg_value
))
2449 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2450 else if (cs
->c
== 'j')
2451 /* Special case for `-j'. */
2455 char *buf
= (char *) alloca (30);
2456 sprintf (buf
, "%u", *(unsigned int *) cs
->value_ptr
);
2457 ADD_FLAG (buf
, strlen (buf
));
2466 if (cs
->default_value
!= 0
2467 && (*(double *) cs
->value_ptr
2468 == *(double *) cs
->default_value
))
2470 else if (cs
->noarg_value
!= 0
2471 && (*(double *) cs
->value_ptr
2472 == *(double *) cs
->noarg_value
))
2473 ADD_FLAG ("", 0); /* Optional value omitted; see below. */
2476 char *buf
= (char *) alloca (100);
2477 sprintf (buf
, "%g", *(double *) cs
->value_ptr
);
2478 ADD_FLAG (buf
, strlen (buf
));
2487 struct stringlist
*sl
= *(struct stringlist
**) cs
->value_ptr
;
2490 /* Add the elements in reverse order, because
2491 all the flags get reversed below; and the order
2492 matters for some switches (like -I). */
2493 register unsigned int i
= sl
->idx
;
2495 ADD_FLAG (sl
->list
[i
], strlen (sl
->list
[i
]));
2501 flagslen
+= 4 + sizeof posixref
; /* Four more for the possible " -- ". */
2505 /* Construct the value in FLAGSTRING.
2506 We allocate enough space for a preceding dash and trailing null. */
2507 flagstring
= (char *) alloca (1 + flagslen
+ 1);
2508 bzero (flagstring
, 1 + flagslen
+ 1);
2514 /* Add the flag letter or name to the string. */
2515 if (short_option (flags
->cs
->c
))
2516 *p
++ = flags
->cs
->c
;
2525 strcpy (p
, flags
->cs
->long_name
);
2528 if (flags
->arg
!= 0)
2530 /* A flag that takes an optional argument which in this case is
2531 omitted is specified by ARG being "". We must distinguish
2532 because a following flag appended without an intervening " -"
2533 is considered the arg for the first. */
2534 if (flags
->arg
[0] != '\0')
2536 /* Add its argument too. */
2537 *p
++ = !short_option (flags
->cs
->c
) ? '=' : ' ';
2538 p
= quote_for_env (p
, flags
->arg
);
2541 /* Write a following space and dash, for the next flag. */
2545 else if (!short_option (flags
->cs
->c
))
2548 /* Long options must each go in their own word,
2549 so we write the following space and dash. */
2553 flags
= flags
->next
;
2556 /* Define MFLAGS before appending variable definitions. */
2558 if (p
== &flagstring
[1])
2560 flagstring
[0] = '\0';
2561 else if (p
[-1] == '-')
2563 /* Kill the final space and dash. */
2568 /* Terminate the string. */
2571 /* Since MFLAGS is not parsed for flags, there is no reason to
2572 override any makefile redefinition. */
2573 (void) define_variable ("MFLAGS", 6, flagstring
, o_env
, 1);
2575 if (all
&& command_variables
!= 0)
2577 /* Now write a reference to $(MAKEOVERRIDES), which contains all the
2578 command-line variable definitions. */
2580 if (p
== &flagstring
[1])
2581 /* No flags written, so elide the leading dash already written. */
2585 /* Separate the variables from the switches with a "--" arg. */
2588 /* We did not already write a trailing " -". */
2592 /* There is a trailing " -"; fill it out to " -- ". */
2597 /* Copy in the string. */
2600 bcopy (posixref
, p
, sizeof posixref
- 1);
2601 p
+= sizeof posixref
- 1;
2605 bcopy (ref
, p
, sizeof ref
- 1);
2606 p
+= sizeof ref
- 1;
2609 else if (p
== &flagstring
[1])
2614 else if (p
[-1] == '-')
2615 /* Kill the final space and dash. */
2617 /* Terminate the string. */
2620 v
= define_variable ("MAKEFLAGS", 9,
2621 /* If there are switches, omit the leading dash
2622 unless it is a single long option with two
2624 &flagstring
[(flagstring
[0] == '-'
2625 && flagstring
[1] != '-')
2627 /* This used to use o_env, but that lost when a
2628 makefile defined MAKEFLAGS. Makefiles set
2629 MAKEFLAGS to add switches, but we still want
2630 to redefine its value with the full set of
2631 switches. Of course, an override or command
2632 definition will still take precedence. */
2635 /* The first time we are called, set MAKEFLAGS to always be exported.
2636 We should not do this again on the second call, because that is
2637 after reading makefiles which might have done `unexport MAKEFLAGS'. */
2638 v
->export
= v_export
;
2641 /* Print version information. */
2646 extern char *make_host
;
2647 static int printed_version
= 0;
2649 char *precede
= print_data_base_flag
? "# " : "";
2651 if (printed_version
)
2652 /* Do it only once. */
2655 printf ("%sGNU Make version %s", precede
, version_string
);
2656 if (remote_description
!= 0 && *remote_description
!= '\0')
2657 printf ("-%s", remote_description
);
2659 printf (_(", by Richard Stallman and Roland McGrath.\n\
2661 %sCopyright (C) 1988, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99\n\
2662 %s\tFree Software Foundation, Inc.\n\
2663 %sThis is free software; see the source for copying conditions.\n\
2664 %sThere is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A\n\
2665 %sPARTICULAR PURPOSE.\n\n\
2666 %sReport bugs to <bug-make@gnu.org>.\n\n"),
2668 precede
, precede
, precede
, precede
, precede
, precede
);
2670 printed_version
= 1;
2672 /* Flush stdout so the user doesn't have to wait to see the
2673 version information while things are thought about. */
2677 /* Print a bunch of information about this and that. */
2684 when
= time ((time_t *) 0);
2685 printf (_("\n# Make data base, printed on %s"), ctime (&when
));
2687 print_variable_data_base ();
2688 print_dir_data_base ();
2689 print_rule_data_base ();
2690 print_file_data_base ();
2691 print_vpath_data_base ();
2693 when
= time ((time_t *) 0);
2694 printf (_("\n# Finished Make data base on %s\n"), ctime (&when
));
2697 /* Exit with STATUS, cleaning up as necessary. */
2703 static char dying
= 0;
2711 if (print_version_flag
)
2714 /* Wait for children to die. */
2715 for (err
= (status
!= 0); job_slots_used
> 0; err
= 0)
2716 reap_children (1, err
);
2718 /* Let the remote job module clean up its state. */
2721 /* Remove the intermediate files. */
2722 remove_intermediates (0);
2724 if (print_data_base_flag
)
2727 /* Try to move back to the original directory. This is essential on
2728 MS-DOS (where there is really only one process), and on Unix it
2729 puts core files in the original directory instead of the -C
2730 directory. Must wait until after remove_intermediates(), or unlinks
2731 of relative pathnames fail. */
2732 if (directory_before_chdir
!= 0)
2733 chdir (directory_before_chdir
);
2735 log_working_directory (0);
2741 /* Write a message indicating that we've just entered or
2742 left (according to ENTERING) the current directory. */
2745 log_working_directory (entering
)
2748 static int entered
= 0;
2749 char *msg
= entering
? _("Entering") : _("Leaving");
2751 /* Print nothing without the flag. Don't print the entering message
2752 again if we already have. Don't print the leaving message if we
2753 haven't printed the entering message. */
2754 if (! print_directory_flag
|| entering
== entered
)
2759 if (print_data_base_flag
)
2760 fputs ("# ", stdout
);
2763 printf ("%s: %s ", program
, msg
);
2765 printf ("%s[%u]: %s ", program
, makelevel
, msg
);
2767 if (starting_directory
== 0)
2768 puts (_("an unknown directory"));
2770 printf (_("directory `%s'\n"), starting_directory
);