90#include "str.h"
91#include "suff.h"
92#include "targ.h"
93#include "util.h"
94#include "var.h"
95
96extern char **environ; /* XXX what header declares this variable? */
97
98#define WANT_ENV_MKLVL 1
99#define MKLVL_MAXVAL 500
100#define MKLVL_ENVVAR "__MKLVL__"
101
102/* ordered list of makefiles to read */
103static Lst makefiles = Lst_Initializer(makefiles);
104
105/* list of variables to print */
106static Lst variables = Lst_Initializer(variables);
107
108static Boolean expandVars; /* fully expand printed variables */
109static Boolean noBuiltins; /* -r flag */
110static Boolean forceJobs; /* -j argument given */
111static char *curdir; /* startup directory */
112static char *objdir; /* where we chdir'ed to */
113
114/* (-E) vars to override from env */
115Lst envFirstVars = Lst_Initializer(envFirstVars);
116
117/* Targets to be made */
118Lst create = Lst_Initializer(create);
119
120Boolean allPrecious; /* .PRECIOUS given on line by itself */
121Boolean beSilent; /* -s flag */
122Boolean beVerbose; /* -v flag */
123Boolean compatMake; /* -B argument */
124Boolean debug; /* -d flag */
125Boolean ignoreErrors; /* -i flag */
126int jobLimit; /* -j argument */
127Boolean jobsRunning; /* TRUE if the jobs might be running */
128Boolean keepgoing; /* -k flag */
129Boolean noExecute; /* -n flag */
130Boolean queryFlag; /* -q flag */
131Boolean touchFlag; /* -t flag */
132Boolean usePipes; /* !-P flag */
133uint32_t warn_cmd; /* command line warning flags */
134uint32_t warn_flags; /* actual warning flags */
135uint32_t warn_nocmd; /* command line no-warning flags */
136
137time_t now; /* Time at start of make */
138struct GNode *DEFAULT; /* .DEFAULT node */
139
140/**
141 * Exit with usage message.
142 */
143static void
144usage(void)
145{
146 fprintf(stderr,
147 "usage: make [-BPSXeiknqrstv] [-C directory] [-D variable]\n"
148 "\t[-d flags] [-E variable] [-f makefile] [-I directory]\n"
149 "\t[-j max_jobs] [-m directory] [-V variable]\n"
150 "\t[variable=value] [target ...]\n");
151 exit(2);
152}
153
154/**
155 * MFLAGS_append
156 * Append a flag with an optional argument to MAKEFLAGS and MFLAGS
157 */
158static void
159MFLAGS_append(const char *flag, char *arg)
160{
161 char *str;
162
163 Var_Append(".MAKEFLAGS", flag, VAR_GLOBAL);
164 if (arg != NULL) {
165 str = MAKEFLAGS_quote(arg);
166 Var_Append(".MAKEFLAGS", str, VAR_GLOBAL);
167 free(str);
168 }
169
170 Var_Append("MFLAGS", flag, VAR_GLOBAL);
171 if (arg != NULL) {
172 str = MAKEFLAGS_quote(arg);
173 Var_Append("MFLAGS", str, VAR_GLOBAL);
174 free(str);
175 }
176}
177
178/**
179 * Main_ParseWarn
180 *
181 * Handle argument to warning option.
182 */
183int
184Main_ParseWarn(const char *arg, int iscmd)
185{
186 int i, neg;
187
188 static const struct {
189 const char *option;
190 uint32_t flag;
191 } options[] = {
192 { "dirsyntax", WARN_DIRSYNTAX },
193 { NULL, 0 }
194 };
195
196 neg = 0;
197 if (arg[0] == 'n' && arg[1] == 'o') {
198 neg = 1;
199 arg += 2;
200 }
201
202 for (i = 0; options[i].option != NULL; i++)
203 if (strcmp(arg, options[i].option) == 0)
204 break;
205
206 if (options[i].option == NULL)
207 /* unknown option */
208 return (-1);
209
210 if (iscmd) {
211 if (!neg) {
212 warn_cmd |= options[i].flag;
213 warn_nocmd &= ~options[i].flag;
214 warn_flags |= options[i].flag;
215 } else {
216 warn_nocmd |= options[i].flag;
217 warn_cmd &= ~options[i].flag;
218 warn_flags &= ~options[i].flag;
219 }
220 } else {
221 if (!neg) {
222 warn_flags |= (options[i].flag & ~warn_nocmd);
223 } else {
224 warn_flags &= ~(options[i].flag | warn_cmd);
225 }
226 }
227 return (0);
228}
229
230/**
231 * Open and parse the given makefile.
232 *
233 * Results:
234 * TRUE if ok. FALSE if couldn't open file.
235 */
236static Boolean
237ReadMakefile(const char p[])
238{
239 char *fname; /* makefile to read */
240 FILE *stream;
241 char *name, path[MAXPATHLEN];
242 char *MAKEFILE;
243 int setMAKEFILE;
244
245 /* XXX - remove this once constification is done */
246 fname = estrdup(p);
247
248 if (!strcmp(fname, "-")) {
249 Parse_File("(stdin)", stdin);
250 Var_SetGlobal("MAKEFILE", "");
251 } else {
252 setMAKEFILE = strcmp(fname, ".depend");
253
254 /* if we've chdir'd, rebuild the path name */
255 if (curdir != objdir && *fname != '/') {
256 snprintf(path, MAXPATHLEN, "%s/%s", curdir, fname);
257 /*
258 * XXX The realpath stuff breaks relative includes
259 * XXX in some cases. The problem likely is in
260 * XXX parse.c where it does special things in
261 * XXX ParseDoInclude if the file is relateive
262 * XXX or absolute and not a system file. There
263 * XXX it assumes that if the current file that's
264 * XXX being included is absolute, that any files
265 * XXX that it includes shouldn't do the -I path
266 * XXX stuff, which is inconsistant with historical
267 * XXX behavior. However, I can't pentrate the mists
268 * XXX further, so I'm putting this workaround in
269 * XXX here until such time as the underlying bug
270 * XXX can be fixed.
271 */
272#if THIS_BREAKS_THINGS
273 if (realpath(path, path) != NULL &&
274 (stream = fopen(path, "r")) != NULL) {
275 MAKEFILE = fname;
276 fname = path;
277 goto found;
278 }
279 } else if (realpath(fname, path) != NULL) {
280 MAKEFILE = fname;
281 fname = path;
282 if ((stream = fopen(fname, "r")) != NULL)
283 goto found;
284 }
285#else
286 if ((stream = fopen(path, "r")) != NULL) {
287 MAKEFILE = fname;
288 fname = path;
289 goto found;
290 }
291 } else {
292 MAKEFILE = fname;
293 if ((stream = fopen(fname, "r")) != NULL)
294 goto found;
295 }
296#endif
297 /* look in -I and system include directories. */
298 name = Path_FindFile(fname, &parseIncPath);
299 if (!name)
300 name = Path_FindFile(fname, &sysIncPath);
301 if (!name || !(stream = fopen(name, "r")))
302 return (FALSE);
303 MAKEFILE = fname = name;
304 /*
305 * set the MAKEFILE variable desired by System V fans -- the
306 * placement of the setting here means it gets set to the last
307 * makefile specified, as it is set by SysV make.
308 */
309found:
310 if (setMAKEFILE)
311 Var_SetGlobal("MAKEFILE", MAKEFILE);
312 Parse_File(fname, stream);
313 fclose(stream);
314 }
315 return (TRUE);
316}
317
318/**
319 * MainParseArgs
320 * Parse a given argument vector. Called from main() and from
321 * Main_ParseArgLine() when the .MAKEFLAGS target is used.
322 *
323 * XXX: Deal with command line overriding .MAKEFLAGS in makefile
324 *
325 * Side Effects:
326 * Various global and local flags will be set depending on the flags
327 * given
328 */
329static void
330MainParseArgs(int argc, char **argv)
331{
332 int c;
333 Boolean found_dd = FALSE;
334
335rearg:
336 optind = 1; /* since we're called more than once */
337 optreset = 1;
338#define OPTFLAGS "ABC:D:E:I:PSV:Xd:ef:ij:km:nqrstvx:"
339 for (;;) {
340 if ((optind < argc) && strcmp(argv[optind], "--") == 0) {
341 found_dd = TRUE;
342 }
343 if ((c = getopt(argc, argv, OPTFLAGS)) == -1) {
344 break;
345 }
346 switch(c) {
347
348 case 'A':
349 arch_fatal = FALSE;
350 MFLAGS_append("-A", NULL);
351 break;
352 case 'C':
353 if (chdir(optarg) == -1)
354 err(1, "chdir %s", optarg);
355 break;
356 case 'D':
357 Var_SetGlobal(optarg, "1");
358 MFLAGS_append("-D", optarg);
359 break;
360 case 'I':
361 Parse_AddIncludeDir(optarg);
362 MFLAGS_append("-I", optarg);
363 break;
364 case 'V':
365 Lst_AtEnd(&variables, estrdup(optarg));
366 MFLAGS_append("-V", optarg);
367 break;
368 case 'X':
369 expandVars = FALSE;
370 break;
371 case 'B':
372 compatMake = TRUE;
373 MFLAGS_append("-B", NULL);
374 unsetenv("MAKE_JOBS_FIFO");
375 break;
376 case 'P':
377 usePipes = FALSE;
378 MFLAGS_append("-P", NULL);
379 break;
380 case 'S':
381 keepgoing = FALSE;
382 MFLAGS_append("-S", NULL);
383 break;
384 case 'd': {
385 char *modules = optarg;
386
387 for (; *modules; ++modules)
388 switch (*modules) {
389 case 'A':
390 debug = ~0;
391 break;
392 case 'a':
393 debug |= DEBUG_ARCH;
394 break;
395 case 'c':
396 debug |= DEBUG_COND;
397 break;
398 case 'd':
399 debug |= DEBUG_DIR;
400 break;
401 case 'f':
402 debug |= DEBUG_FOR;
403 break;
404 case 'g':
405 if (modules[1] == '1') {
406 debug |= DEBUG_GRAPH1;
407 ++modules;
408 }
409 else if (modules[1] == '2') {
410 debug |= DEBUG_GRAPH2;
411 ++modules;
412 }
413 break;
414 case 'j':
415 debug |= DEBUG_JOB;
416 break;
417 case 'l':
418 debug |= DEBUG_LOUD;
419 break;
420 case 'm':
421 debug |= DEBUG_MAKE;
422 break;
423 case 's':
424 debug |= DEBUG_SUFF;
425 break;
426 case 't':
427 debug |= DEBUG_TARG;
428 break;
429 case 'v':
430 debug |= DEBUG_VAR;
431 break;
432 default:
433 warnx("illegal argument to d option "
434 "-- %c", *modules);
435 usage();
436 }
437 MFLAGS_append("-d", optarg);
438 break;
439 }
440 case 'E':
441 Lst_AtEnd(&envFirstVars, estrdup(optarg));
442 MFLAGS_append("-E", optarg);
443 break;
444 case 'e':
445 checkEnvFirst = TRUE;
446 MFLAGS_append("-e", NULL);
447 break;
448 case 'f':
449 Lst_AtEnd(&makefiles, estrdup(optarg));
450 break;
451 case 'i':
452 ignoreErrors = TRUE;
453 MFLAGS_append("-i", NULL);
454 break;
455 case 'j': {
456 char *endptr;
457
458 forceJobs = TRUE;
459 jobLimit = strtol(optarg, &endptr, 10);
460 if (jobLimit <= 0 || *endptr != '\0') {
461 warnx("illegal number, -j argument -- %s",
462 optarg);
463 usage();
464 }
465 MFLAGS_append("-j", optarg);
466 break;
467 }
468 case 'k':
469 keepgoing = TRUE;
470 MFLAGS_append("-k", NULL);
471 break;
472 case 'm':
473 Path_AddDir(&sysIncPath, optarg);
474 MFLAGS_append("-m", optarg);
475 break;
476 case 'n':
477 noExecute = TRUE;
478 MFLAGS_append("-n", NULL);
479 break;
480 case 'q':
481 queryFlag = TRUE;
482 /* Kind of nonsensical, wot? */
483 MFLAGS_append("-q", NULL);
484 break;
485 case 'r':
486 noBuiltins = TRUE;
487 MFLAGS_append("-r", NULL);
488 break;
489 case 's':
490 beSilent = TRUE;
491 MFLAGS_append("-s", NULL);
492 break;
493 case 't':
494 touchFlag = TRUE;
495 MFLAGS_append("-t", NULL);
496 break;
497 case 'v':
498 beVerbose = TRUE;
499 MFLAGS_append("-v", NULL);
500 break;
501 case 'x':
502 if (Main_ParseWarn(optarg, 1) != -1)
503 MFLAGS_append("-x", optarg);
504 break;
505
506 default:
507 case '?':
508 usage();
509 }
510 }
511 argv += optind;
512 argc -= optind;
513
514 oldVars = TRUE;
515
516 /*
517 * Parse the rest of the arguments.
518 * o Check for variable assignments and perform them if so.
519 * o Check for more flags and restart getopt if so.
520 * o Anything else is taken to be a target and added
521 * to the end of the "create" list.
522 */
523 for (; *argv != NULL; ++argv, --argc) {
524 if (Parse_IsVar(*argv)) {
525 char *ptr = MAKEFLAGS_quote(*argv);
526
527 Var_Append(".MAKEFLAGS", ptr, VAR_GLOBAL);
528 Parse_DoVar(*argv, VAR_CMD);
529 free(ptr);
530
531 } else if ((*argv)[0] == '-') {
532 if ((*argv)[1] == '\0') {
533 /*
534 * (*argv) is a single dash, so we
535 * just ignore it.
536 */
537 } else if (found_dd) {
538 /*
539 * Double dash has been found, ignore
540 * any more options. But what do we do
541 * with it? For now treat it like a target.
542 */
543 Lst_AtEnd(&create, estrdup(*argv));
544 } else {
545 /*
546 * (*argv) is a -flag, so backup argv and
547 * argc. getopt() expects options to start
548 * in the 2nd position.
549 */
550 argc++;
551 argv--;
552 goto rearg;
553 }
554
555 } else if ((*argv)[0] == '\0') {
556 Punt("illegal (null) argument.");
557
558 } else {
559 Lst_AtEnd(&create, estrdup(*argv));
560 }
561 }
562}
563
564/**
565 * Main_ParseArgLine
566 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target
567 * is encountered and by main() when reading the .MAKEFLAGS envariable.
568 * Takes a line of arguments and breaks it into its
569 * component words and passes those words and the number of them to the
570 * MainParseArgs function.
571 * The line should have all its leading whitespace removed.
572 *
573 * Side Effects:
574 * Only those that come from the various arguments.
575 */
576void
577Main_ParseArgLine(char *line, int mflags)
578{
579 ArgArray aa;
580
581 if (line == NULL)
582 return;
583 for (; *line == ' '; ++line)
584 continue;
585 if (!*line)
586 return;
587
588 if (mflags)
589 MAKEFLAGS_break(&aa, line);
590 else
591 brk_string(&aa, line, TRUE);
592
593 MainParseArgs(aa.argc, aa.argv);
594 ArgArray_Done(&aa);
595}
596
597static char *
598chdir_verify_path(const char *path, char *obpath)
599{
600 struct stat sb;
601
602 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) {
603 if (chdir(path) == -1 || getcwd(obpath, MAXPATHLEN) == NULL) {
604 warn("warning: %s", path);
605 return (NULL);
606 }
607 return (obpath);
608 }
609
610 return (NULL);
611}
612
613/**
614 * In lieu of a good way to prevent every possible looping in make(1), stop
615 * there from being more than MKLVL_MAXVAL processes forked by make(1), to
616 * prevent a forkbomb from happening, in a dumb and mechanical way.
617 *
618 * Side Effects:
619 * Creates or modifies enviornment variable MKLVL_ENVVAR via setenv().
620 */
621static void
622check_make_level(void)
623{
624#ifdef WANT_ENV_MKLVL
625 char *value = getenv(MKLVL_ENVVAR);
626 int level = (value == NULL) ? 0 : atoi(value);
627
628 if (level < 0) {
629 errc(2, EAGAIN, "Invalid value for recursion level (%d).",
630 level);
631 } else if (level > MKLVL_MAXVAL) {
632 errc(2, EAGAIN, "Max recursion level (%d) exceeded.",
633 MKLVL_MAXVAL);
634 } else {
635 char new_value[32];
636 sprintf(new_value, "%d", level + 1);
637 setenv(MKLVL_ENVVAR, new_value, 1);
638 }
639#endif /* WANT_ENV_MKLVL */
640}
641
642/**
643 * main
644 * The main function, for obvious reasons. Initializes variables
645 * and a few modules, then parses the arguments give it in the
646 * environment and on the command line. Reads the system makefile
647 * followed by either Makefile, makefile or the file given by the
648 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the
649 * flags it has received by then uses either the Make or the Compat
650 * module to create the initial list of targets.
651 *
652 * Results:
653 * If -q was given, exits -1 if anything was out-of-date. Else it exits
654 * 0.
655 *
656 * Side Effects:
657 * The program exits when done. Targets are created. etc. etc. etc.
658 */
659int
660main(int argc, char **argv)
661{
662 const char *machine;
663 const char *machine_arch;
664 const char *machine_cpu;
665 Boolean outOfDate = TRUE; /* FALSE if all targets up to date */
666 char *p, *p1;
667 const char *pathp;
668 const char *path;
669 char mdpath[MAXPATHLEN];
670 char obpath[MAXPATHLEN];
671 char cdpath[MAXPATHLEN];
672 char *cp = NULL, *start;
673
674 /*
675 * Initialize file global variables.
676 */
677 expandVars = TRUE;
678 noBuiltins = FALSE; /* Read the built-in rules */
679 forceJobs = FALSE; /* No -j flag */
680 curdir = cdpath;
681
682 /*
683 * Initialize program global variables.
684 */
685 beSilent = FALSE; /* Print commands as executed */
686 ignoreErrors = FALSE; /* Pay attention to non-zero returns */
687 noExecute = FALSE; /* Execute all commands */
688 keepgoing = FALSE; /* Stop on error */
689 allPrecious = FALSE; /* Remove targets when interrupted */
690 queryFlag = FALSE; /* This is not just a check-run */
691 touchFlag = FALSE; /* Actually update targets */
692 usePipes = TRUE; /* Catch child output in pipes */
693 debug = 0; /* No debug verbosity, please. */
694 jobsRunning = FALSE;
695
696 jobLimit = DEFMAXJOBS;
697 compatMake = FALSE; /* No compat mode */
698
699 check_make_level();
700
701#ifdef RLIMIT_NOFILE
702 /*
703 * get rid of resource limit on file descriptors
704 */
705 {
706 struct rlimit rl;
707 if (getrlimit(RLIMIT_NOFILE, &rl) == -1) {
708 err(2, "getrlimit");
709 }
710 rl.rlim_cur = rl.rlim_max;
711 if (setrlimit(RLIMIT_NOFILE, &rl) == -1) {
712 err(2, "setrlimit");
713 }
714 }
715#endif
716
717 /*
718 * PC-98 kernel sets the `i386' string to the utsname.machine and
719 * it cannot be distinguished from IBM-PC by uname(3). Therefore,
720 * we check machine.ispc98 and adjust the machine variable before
721 * using usname(3) below.
722 * NOTE: machdep.ispc98 was defined on 1998/8/31. At that time,
723 * __FreeBSD_version was defined as 300003. So, this check can
724 * safely be done with any kernel with version > 300003.
725 */
726 if ((machine = getenv("MACHINE")) == NULL) {
727 int ispc98;
728 size_t len;
729
730 len = sizeof(ispc98);
731 if (!sysctlbyname("machdep.ispc98", &ispc98, &len, NULL, 0)) {
732 if (ispc98)
733 machine = "pc98";
734 }
735 }
736
737 /*
738 * Get the name of this type of MACHINE from utsname
739 * so we can share an executable for similar machines.
740 * (i.e. m68k: amiga hp300, mac68k, sun3, ...)
741 *
742 * Note that while MACHINE is decided at run-time,
743 * MACHINE_ARCH is always known at compile time.
744 */
745 if (machine == NULL) {
746#ifdef MACHINE
747 machine = MACHINE;
748#else
749 static struct utsname utsname;
750
751 if (uname(&utsname) == -1)
752 err(2, "uname");
753 machine = utsname.machine;
754#endif
755 }
756
757 if ((machine_arch = getenv("MACHINE_ARCH")) == NULL) {
758#ifdef MACHINE_ARCH
759 machine_arch = MACHINE_ARCH;
760#else
761 machine_arch = "unknown";
762#endif
763 }
764
765 /*
766 * Set machine_cpu to the minumum supported CPU revision based
767 * on the target architecture, if not already set.
768 */
769 if ((machine_cpu = getenv("MACHINE_CPU")) == NULL) {
770 if (!strcmp(machine_arch, "i386"))
771 machine_cpu = "i386";
772 else if (!strcmp(machine_arch, "alpha"))
773 machine_cpu = "ev4";
774 else
775 machine_cpu = "unknown";
776 }
777
778 /*
779 * Initialize the parsing, directory and variable modules to prepare
780 * for the reading of inclusion paths and variable settings on the
781 * command line
782 */
783 Proc_Init();
784
785 Dir_Init(); /* Initialize directory structures so -I flags
786 * can be processed correctly */
787 Var_Init(environ); /* As well as the lists of variables for
788 * parsing arguments */
789
790 /*
791 * Initialize the Shell so that we have a shell for != assignments
792 * on the command line.
793 */
794 Shell_Init();
795
796 /*
797 * Initialize various variables.
798 * MAKE also gets this name, for compatibility
799 * .MAKEFLAGS gets set to the empty string just in case.
800 * MFLAGS also gets initialized empty, for compatibility.
801 */
802 Var_SetGlobal("MAKE", argv[0]);
803 Var_SetGlobal(".MAKEFLAGS", "");
804 Var_SetGlobal("MFLAGS", "");
805 Var_SetGlobal("MACHINE", machine);
806 Var_SetGlobal("MACHINE_ARCH", machine_arch);
807 Var_SetGlobal("MACHINE_CPU", machine_cpu);
808#ifdef MAKE_VERSION
809 Var_SetGlobal("MAKE_VERSION", MAKE_VERSION);
810#endif
811
812 /*
813 * First snag things out of the MAKEFLAGS environment
814 * variable. Then parse the command line arguments.
815 */
816 Main_ParseArgLine(getenv("MAKEFLAGS"), 1);
817
818 MainParseArgs(argc, argv);
819
820 /*
821 * Find where we are...
822 */
823 if (getcwd(curdir, MAXPATHLEN) == NULL)
824 err(2, NULL);
825
826 {
827 struct stat sa;
828
829 if (stat(curdir, &sa) == -1)
830 err(2, "%s", curdir);
831 }
832
833 /*
834 * The object directory location is determined using the
835 * following order of preference:
836 *
837 * 1. MAKEOBJDIRPREFIX`cwd`
838 * 2. MAKEOBJDIR
839 * 3. PATH_OBJDIR.${MACHINE}
840 * 4. PATH_OBJDIR
841 * 5. PATH_OBJDIRPREFIX`cwd`
842 *
843 * If one of the first two fails, use the current directory.
844 * If the remaining three all fail, use the current directory.
845 *
846 * Once things are initted,
847 * have to add the original directory to the search path,
848 * and modify the paths for the Makefiles apropriately. The
849 * current directory is also placed as a variable for make scripts.
850 */
851 if (!(pathp = getenv("MAKEOBJDIRPREFIX"))) {
852 if (!(path = getenv("MAKEOBJDIR"))) {
853 path = PATH_OBJDIR;
854 pathp = PATH_OBJDIRPREFIX;
855 snprintf(mdpath, MAXPATHLEN, "%s.%s", path, machine);
856 if (!(objdir = chdir_verify_path(mdpath, obpath)))
857 if (!(objdir=chdir_verify_path(path, obpath))) {
858 snprintf(mdpath, MAXPATHLEN,
859 "%s%s", pathp, curdir);
860 if (!(objdir=chdir_verify_path(mdpath,
861 obpath)))
862 objdir = curdir;
863 }
864 }
865 else if (!(objdir = chdir_verify_path(path, obpath)))
866 objdir = curdir;
867 }
868 else {
869 snprintf(mdpath, MAXPATHLEN, "%s%s", pathp, curdir);
870 if (!(objdir = chdir_verify_path(mdpath, obpath)))
871 objdir = curdir;
872 }
873 Dir_InitDot(); /* Initialize the "." directory */
874 if (objdir != curdir)
875 Path_AddDir(&dirSearchPath, curdir);
876 Var_SetGlobal(".ST_EXPORTVAR", "YES");
877 Var_SetGlobal(".CURDIR", curdir);
878 Var_SetGlobal(".OBJDIR", objdir);
879
880 if (getenv("MAKE_JOBS_FIFO") != NULL)
881 forceJobs = TRUE;
882 /*
883 * Be compatible if user did not specify -j and did not explicitly
884 * turned compatibility on
885 */
886 if (!compatMake && !forceJobs)
887 compatMake = TRUE;
888
889 /*
890 * Initialize target and suffix modules in preparation for
891 * parsing the makefile(s)
892 */
893 Targ_Init();
894 Suff_Init();
895
896 DEFAULT = NULL;
897 time(&now);
898
899 /*
900 * Set up the .TARGETS variable to contain the list of targets to be
901 * created. If none specified, make the variable empty -- the parser
902 * will fill the thing in with the default or .MAIN target.
903 */
904 if (Lst_IsEmpty(&create)) {
905 Var_SetGlobal(".TARGETS", "");
906 } else {
907 LstNode *ln;
908
909 for (ln = Lst_First(&create); ln != NULL; ln = Lst_Succ(ln)) {
910 char *name = Lst_Datum(ln);
911
912 Var_Append(".TARGETS", name, VAR_GLOBAL);
913 }
914 }
915
916
917 /*
918 * If no user-supplied system path was given (through the -m option)
919 * add the directories from the DEFSYSPATH (more than one may be given
920 * as dir1:...:dirn) to the system include path.
921 */
922 if (TAILQ_EMPTY(&sysIncPath)) {
923 char syspath[] = PATH_DEFSYSPATH;
924
925 for (start = syspath; *start != '\0'; start = cp) {
926 for (cp = start; *cp != '\0' && *cp != ':'; cp++)
927 continue;
928 if (*cp == '\0') {
929 Path_AddDir(&sysIncPath, start);
930 } else {
931 *cp++ = '\0';
932 Path_AddDir(&sysIncPath, start);
933 }
934 }
935 }
936
937 /*
938 * Read in the built-in rules first, followed by the specified
939 * makefile, if it was (makefile != (char *) NULL), or the default
940 * Makefile and makefile, in that order, if it wasn't.
941 */
942 if (!noBuiltins) {
943 /* Path of sys.mk */
944 Lst sysMkPath = Lst_Initializer(sysMkPath);
945 LstNode *ln;
946 char defsysmk[] = PATH_DEFSYSMK;
947
948 Path_Expand(defsysmk, &sysIncPath, &sysMkPath);
949 if (Lst_IsEmpty(&sysMkPath))
950 Fatal("make: no system rules (%s).", PATH_DEFSYSMK);
951 LST_FOREACH(ln, &sysMkPath) {
952 if (!ReadMakefile(Lst_Datum(ln)))
953 break;
954 }
955 if (ln != NULL)
956 Fatal("make: cannot open %s.", (char *)Lst_Datum(ln));
957 Lst_Destroy(&sysMkPath, free);
958 }
959
960 if (!Lst_IsEmpty(&makefiles)) {
961 LstNode *ln;
962
963 LST_FOREACH(ln, &makefiles) {
964 if (!ReadMakefile(Lst_Datum(ln)))
965 break;
966 }
967 if (ln != NULL)
968 Fatal("make: cannot open %s.", (char *)Lst_Datum(ln));
969 } else if (!ReadMakefile("BSDmakefile"))
970 if (!ReadMakefile("makefile"))
971 ReadMakefile("Makefile");
972
973 ReadMakefile(".depend");
974
975 /* Install all the flags into the MAKE envariable. */
976 if (((p = Var_Value(".MAKEFLAGS", VAR_GLOBAL, &p1)) != NULL) && *p)
977 setenv("MAKEFLAGS", p, 1);
978 free(p1);
979
980 /*
981 * For compatibility, look at the directories in the VPATH variable
982 * and add them to the search path, if the variable is defined. The
983 * variable's value is in the same format as the PATH envariable, i.e.
984 * <directory>:<directory>:<directory>...
985 */
986 if (Var_Exists("VPATH", VAR_CMD)) {
987 /*
988 * GCC stores string constants in read-only memory, but
989 * Var_Subst will want to write this thing, so store it
990 * in an array
991 */
992 static char VPATH[] = "${VPATH}";
993 Buffer *buf;
994 char *vpath;
995 char *ptr;
996 char savec;
997
998 buf = Var_Subst(VPATH, VAR_CMD, FALSE);
999
1000 vpath = Buf_Data(buf);
1001 do {
1002 /* skip to end of directory */
1003 for (ptr = vpath; *ptr != ':' && *ptr != '\0'; ptr++)
1004 ;
1005
1006 /* Save terminator character so know when to stop */
1007 savec = *ptr;
1008 *ptr = '\0';
1009
1010 /* Add directory to search path */
1011 Path_AddDir(&dirSearchPath, vpath);
1012
1013 vpath = ptr + 1;
1014 } while (savec != '\0');
1015
1016 Buf_Destroy(buf, TRUE);
1017 }
1018
1019 /*
1020 * Now that all search paths have been read for suffixes et al, it's
1021 * time to add the default search path to their lists...
1022 */
1023 Suff_DoPaths();
1024
1025 /* print the initial graph, if the user requested it */
1026 if (DEBUG(GRAPH1))
1027 Targ_PrintGraph(1);
1028
1029 /* print the values of any variables requested by the user */
1030 if (Lst_IsEmpty(&variables)) {
1031 /*
1032 * Since the user has not requested that any variables
1033 * be printed, we can build targets.
1034 *
1035 * Have read the entire graph and need to make a list of targets
1036 * to create. If none was given on the command line, we consult
1037 * the parsing module to find the main target(s) to create.
1038 */
1039 Lst targs = Lst_Initializer(targs);
1040
1041 if (Lst_IsEmpty(&create))
1042 Parse_MainName(&targs);
1043 else
1044 Targ_FindList(&targs, &create, TARG_CREATE);
1045
1046 if (compatMake) {
1047 /*
1048 * Compat_Init will take care of creating
1049 * all the targets as well as initializing
1050 * the module.
1051 */
1052 Compat_Run(&targs);
1053 outOfDate = 0;
1054 } else {
1055 /*
1056 * Initialize job module before traversing
1057 * the graph, now that any .BEGIN and .END
1058 * targets have been read. This is done
1059 * only if the -q flag wasn't given (to
1060 * prevent the .BEGIN from being executed
1061 * should it exist).
1062 */
1063 if (!queryFlag) {
1064 Job_Init(jobLimit);
1065 jobsRunning = TRUE;
1066 }
1067
1068 /* Traverse the graph, checking on all the targets */
1069 outOfDate = Make_Run(&targs);
1070 }
1071 Lst_Destroy(&targs, NOFREE);
1072
1073 } else {
1074 Var_Print(&variables, expandVars);
1075 }
1076
1077 Lst_Destroy(&variables, free);
1078 Lst_Destroy(&makefiles, free);
1079 Lst_Destroy(&create, free);
1080
1081 /* print the graph now it's been processed if the user requested it */
1082 if (DEBUG(GRAPH2))
1083 Targ_PrintGraph(2);
1084
1085 if (queryFlag && outOfDate)
1086 return (1);
1087 else
1088 return (0);
1089}
1090
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