1 /* $NetBSD: main.c,v 1.226 2014/02/07 17:23:35 pooka Exp $ */
2
3 /*
4 * Copyright (c) 1988, 1989, 1990, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Adam de Boor.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 /*
36 * Copyright (c) 1989 by Berkeley Softworks
37 * All rights reserved.
38 *
39 * This code is derived from software contributed to Berkeley by
40 * Adam de Boor.
41 *
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
44 * are met:
45 * 1. Redistributions of source code must retain the above copyright
46 * notice, this list of conditions and the following disclaimer.
47 * 2. Redistributions in binary form must reproduce the above copyright
48 * notice, this list of conditions and the following disclaimer in the
49 * documentation and/or other materials provided with the distribution.
50 * 3. All advertising materials mentioning features or use of this software
51 * must display the following acknowledgement:
52 * This product includes software developed by the University of
53 * California, Berkeley and its contributors.
54 * 4. Neither the name of the University nor the names of its contributors
55 * may be used to endorse or promote products derived from this software
56 * without specific prior written permission.
57 *
58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
68 * SUCH DAMAGE.
69 */
70
71 #ifndef MAKE_NATIVE
72 static char rcsid[] = "$NetBSD: main.c,v 1.226 2014/02/07 17:23:35 pooka Exp $";
73 #else
74 #include <sys/cdefs.h>
75 #ifndef lint
76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\
77 The Regents of the University of California. All rights reserved.");
78 #endif /* not lint */
79
80 #ifndef lint
81 #if 0
82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94";
83 #else
84 __RCSID("$NetBSD: main.c,v 1.226 2014/02/07 17:23:35 pooka Exp $");
85 #endif
86 #endif /* not lint */
87 #endif
88
89 /*-
90 * main.c --
91 * The main file for this entire program. Exit routines etc
92 * reside here.
93 *
94 * Utility functions defined in this file:
95 * Main_ParseArgLine Takes a line of arguments, breaks them and
96 * treats them as if they were given when first
97 * invoked. Used by the parse module to implement
98 * the .MFLAGS target.
99 *
100 * Error Print a tagged error message. The global
101 * MAKE variable must have been defined. This
102 * takes a format string and two optional
103 * arguments for it.
104 *
105 * Fatal Print an error message and exit. Also takes
106 * a format string and two arguments.
107 *
108 * Punt Aborts all jobs and exits with a message. Also
109 * takes a format string and two arguments.
110 *
111 * Finish Finish things up by printing the number of
112 * errors which occurred, as passed to it, and
113 * exiting.
114 */
115
116 #include <sys/types.h>
117 #include <sys/time.h>
118 #include <sys/param.h>
119 #include <sys/resource.h>
120 #include <sys/stat.h>
121 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL)
122 #include <sys/sysctl.h>
123 #endif
124 #include <sys/utsname.h>
125 #include "wait.h"
126
127 #include <errno.h>
128 #include <fcntl.h>
129 #include <signal.h>
130 #include <stdarg.h>
131 #include <stdio.h>
132 #include <stdlib.h>
133 #include <time.h>
134 #include <ctype.h>
135
136 #include "make.h"
137 #include "hash.h"
138 #include "dir.h"
139 #include "job.h"
140 #include "pathnames.h"
141 #include "trace.h"
142
143 #ifdef USE_IOVEC
144 #include <sys/uio.h>
145 #endif
146
147 #ifndef DEFMAXLOCAL
148 #define DEFMAXLOCAL DEFMAXJOBS
149 #endif /* DEFMAXLOCAL */
150
151 #ifndef __arraycount
152 # define __arraycount(__x) (sizeof(__x) / sizeof(__x[0]))
153 #endif
154
155 Lst create; /* Targets to be made */
156 time_t now; /* Time at start of make */
157 GNode *DEFAULT; /* .DEFAULT node */
158 Boolean allPrecious; /* .PRECIOUS given on line by itself */
159
160 static Boolean noBuiltins; /* -r flag */
161 static Lst makefiles; /* ordered list of makefiles to read */
162 static Boolean printVars; /* print value of one or more vars */
163 static Lst variables; /* list of variables to print */
164 int maxJobs; /* -j argument */
165 static int maxJobTokens; /* -j argument */
166 Boolean compatMake; /* -B argument */
167 int debug; /* -d argument */
168 Boolean debugVflag; /* -dV */
169 Boolean noExecute; /* -n flag */
170 Boolean noRecursiveExecute; /* -N flag */
171 Boolean keepgoing; /* -k flag */
172 Boolean queryFlag; /* -q flag */
173 Boolean touchFlag; /* -t flag */
174 Boolean enterFlag; /* -w flag */
175 Boolean ignoreErrors; /* -i flag */
176 Boolean beSilent; /* -s flag */
177 Boolean oldVars; /* variable substitution style */
178 Boolean checkEnvFirst; /* -e flag */
179 Boolean parseWarnFatal; /* -W flag */
180 Boolean jobServer; /* -J flag */
181 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */
182 Boolean varNoExportEnv; /* -X flag */
183 Boolean doing_depend; /* Set while reading .depend */
184 static Boolean jobsRunning; /* TRUE if the jobs might be running */
185 static const char * tracefile;
186 static void MainParseArgs(int, char **);
187 static int ReadMakefile(const void *, const void *);
188 static void usage(void) MAKE_ATTR_DEAD;
189
190 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */
191 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */
192 char curdir[MAXPATHLEN + 1]; /* Startup directory */
193 char *progname; /* the program name */
194 char *makeDependfile;
195 pid_t myPid;
196 int makelevel;
197
198 Boolean forceJobs = FALSE;
199
200 /*
201 * On some systems MACHINE is defined as something other than
202 * what we want.
203 */
204 #ifdef FORCE_MACHINE
205 # undef MACHINE
206 # define MACHINE FORCE_MACHINE
207 #endif
208
209 extern Lst parseIncPath;
210
211 /*
212 * For compatibility with the POSIX version of MAKEFLAGS that includes
213 * all the options with out -, convert flags to -f -l -a -g -s.
214 */
215 static char *
explode(const char * flags)216 explode(const char *flags)
217 {
218 size_t len;
219 char *nf, *st;
220 const char *f;
221
222 if (flags == NULL)
223 return NULL;
224
225 for (f = flags; *f; f++)
226 if (!isalpha((unsigned char)*f))
227 break;
228
229 if (*f)
230 return bmake_strdup(flags);
231
232 len = strlen(flags);
233 st = nf = bmake_malloc(len * 3 + 1);
234 while (*flags) {
235 *nf++ = '-';
236 *nf++ = *flags++;
237 *nf++ = ' ';
238 }
239 *nf = '\0';
240 return st;
241 }
242
243 static void
parse_debug_options(const char * argvalue)244 parse_debug_options(const char *argvalue)
245 {
246 const char *modules;
247 const char *mode;
248 char *fname;
249 int len;
250
251 for (modules = argvalue; *modules; ++modules) {
252 switch (*modules) {
253 case 'A':
254 debug = ~0;
255 break;
256 case 'a':
257 debug |= DEBUG_ARCH;
258 break;
259 case 'C':
260 debug |= DEBUG_CWD;
261 break;
262 case 'c':
263 debug |= DEBUG_COND;
264 break;
265 case 'd':
266 debug |= DEBUG_DIR;
267 break;
268 case 'e':
269 debug |= DEBUG_ERROR;
270 break;
271 case 'f':
272 debug |= DEBUG_FOR;
273 break;
274 case 'g':
275 if (modules[1] == '1') {
276 debug |= DEBUG_GRAPH1;
277 ++modules;
278 }
279 else if (modules[1] == '2') {
280 debug |= DEBUG_GRAPH2;
281 ++modules;
282 }
283 else if (modules[1] == '3') {
284 debug |= DEBUG_GRAPH3;
285 ++modules;
286 }
287 break;
288 case 'j':
289 debug |= DEBUG_JOB;
290 break;
291 case 'l':
292 debug |= DEBUG_LOUD;
293 break;
294 case 'M':
295 debug |= DEBUG_META;
296 break;
297 case 'm':
298 debug |= DEBUG_MAKE;
299 break;
300 case 'n':
301 debug |= DEBUG_SCRIPT;
302 break;
303 case 'p':
304 debug |= DEBUG_PARSE;
305 break;
306 case 's':
307 debug |= DEBUG_SUFF;
308 break;
309 case 't':
310 debug |= DEBUG_TARG;
311 break;
312 case 'V':
313 debugVflag = TRUE;
314 break;
315 case 'v':
316 debug |= DEBUG_VAR;
317 break;
318 case 'x':
319 debug |= DEBUG_SHELL;
320 break;
321 case 'F':
322 if (debug_file != stdout && debug_file != stderr)
323 fclose(debug_file);
324 if (*++modules == '+') {
325 modules++;
326 mode = "a";
327 } else
328 mode = "w";
329 if (strcmp(modules, "stdout") == 0) {
330 debug_file = stdout;
331 goto debug_setbuf;
332 }
333 if (strcmp(modules, "stderr") == 0) {
334 debug_file = stderr;
335 goto debug_setbuf;
336 }
337 len = strlen(modules);
338 fname = malloc(len + 20);
339 memcpy(fname, modules, len + 1);
340 /* Let the filename be modified by the pid */
341 if (strcmp(fname + len - 3, ".%d") == 0)
342 snprintf(fname + len - 2, 20, "%d", getpid());
343 debug_file = fopen(fname, mode);
344 if (!debug_file) {
345 fprintf(stderr, "Cannot open debug file %s\n",
346 fname);
347 usage();
348 }
349 free(fname);
350 goto debug_setbuf;
351 default:
352 (void)fprintf(stderr,
353 "%s: illegal argument to d option -- %c\n",
354 progname, *modules);
355 usage();
356 }
357 }
358 debug_setbuf:
359 /*
360 * Make the debug_file unbuffered, and make
361 * stdout line buffered (unless debugfile == stdout).
362 */
363 setvbuf(debug_file, NULL, _IONBF, 0);
364 if (debug_file != stdout) {
365 setvbuf(stdout, NULL, _IOLBF, 0);
366 }
367 }
368
369 /*-
370 * MainParseArgs --
371 * Parse a given argument vector. Called from main() and from
372 * Main_ParseArgLine() when the .MAKEFLAGS target is used.
373 *
374 * XXX: Deal with command line overriding .MAKEFLAGS in makefile
375 *
376 * Results:
377 * None
378 *
379 * Side Effects:
380 * Various global and local flags will be set depending on the flags
381 * given
382 */
383 static void
MainParseArgs(int argc,char ** argv)384 MainParseArgs(int argc, char **argv)
385 {
386 char *p;
387 int c = '?';
388 int arginc;
389 char *argvalue;
390 const char *getopt_def;
391 char *optscan;
392 Boolean inOption, dashDash = FALSE;
393 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */
394
395 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw"
396 /* Can't actually use getopt(3) because rescanning is not portable */
397
398 getopt_def = OPTFLAGS;
399 rearg:
400 inOption = FALSE;
401 optscan = NULL;
402 while(argc > 1) {
403 char *getopt_spec;
404 if(!inOption)
405 optscan = argv[1];
406 c = *optscan++;
407 arginc = 0;
408 if(inOption) {
409 if(c == '\0') {
410 ++argv;
411 --argc;
412 inOption = FALSE;
413 continue;
414 }
415 } else {
416 if (c != '-' || dashDash)
417 break;
418 inOption = TRUE;
419 c = *optscan++;
420 }
421 /* '-' found at some earlier point */
422 getopt_spec = strchr(getopt_def, c);
423 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') {
424 /* -<something> found, and <something> should have an arg */
425 inOption = FALSE;
426 arginc = 1;
427 argvalue = optscan;
428 if(*argvalue == '\0') {
429 if (argc < 3)
430 goto noarg;
431 argvalue = argv[2];
432 arginc = 2;
433 }
434 } else {
435 argvalue = NULL;
436 }
437 switch(c) {
438 case '\0':
439 arginc = 1;
440 inOption = FALSE;
441 break;
442 case 'B':
443 compatMake = TRUE;
444 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL);
445 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0);
446 break;
447 case 'C':
448 if (chdir(argvalue) == -1) {
449 (void)fprintf(stderr,
450 "%s: chdir %s: %s\n",
451 progname, argvalue,
452 strerror(errno));
453 exit(1);
454 }
455 if (getcwd(curdir, MAXPATHLEN) == NULL) {
456 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno));
457 exit(2);
458 }
459 ignorePWD = TRUE;
460 break;
461 case 'D':
462 if (argvalue == NULL || argvalue[0] == 0) goto noarg;
463 Var_Set(argvalue, "1", VAR_GLOBAL, 0);
464 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL);
465 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
466 break;
467 case 'I':
468 if (argvalue == NULL) goto noarg;
469 Parse_AddIncludeDir(argvalue);
470 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL);
471 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
472 break;
473 case 'J':
474 if (argvalue == NULL) goto noarg;
475 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) {
476 (void)fprintf(stderr,
477 "%s: internal error -- J option malformed (%s)\n",
478 progname, argvalue);
479 usage();
480 }
481 if ((fcntl(jp_0, F_GETFD, 0) < 0) ||
482 (fcntl(jp_1, F_GETFD, 0) < 0)) {
483 #if 0
484 (void)fprintf(stderr,
485 "%s: ###### warning -- J descriptors were closed!\n",
486 progname);
487 exit(2);
488 #endif
489 jp_0 = -1;
490 jp_1 = -1;
491 compatMake = TRUE;
492 } else {
493 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL);
494 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
495 jobServer = TRUE;
496 }
497 break;
498 case 'N':
499 noExecute = TRUE;
500 noRecursiveExecute = TRUE;
501 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL);
502 break;
503 case 'S':
504 keepgoing = FALSE;
505 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL);
506 break;
507 case 'T':
508 if (argvalue == NULL) goto noarg;
509 tracefile = bmake_strdup(argvalue);
510 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL);
511 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
512 break;
513 case 'V':
514 if (argvalue == NULL) goto noarg;
515 printVars = TRUE;
516 (void)Lst_AtEnd(variables, argvalue);
517 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL);
518 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
519 break;
520 case 'W':
521 parseWarnFatal = TRUE;
522 break;
523 case 'X':
524 varNoExportEnv = TRUE;
525 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL);
526 break;
527 case 'd':
528 if (argvalue == NULL) goto noarg;
529 /* If '-d-opts' don't pass to children */
530 if (argvalue[0] == '-')
531 argvalue++;
532 else {
533 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL);
534 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
535 }
536 parse_debug_options(argvalue);
537 break;
538 case 'e':
539 checkEnvFirst = TRUE;
540 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL);
541 break;
542 case 'f':
543 if (argvalue == NULL) goto noarg;
544 (void)Lst_AtEnd(makefiles, argvalue);
545 break;
546 case 'i':
547 ignoreErrors = TRUE;
548 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL);
549 break;
550 case 'j':
551 if (argvalue == NULL) goto noarg;
552 forceJobs = TRUE;
553 maxJobs = strtol(argvalue, &p, 0);
554 if (*p != '\0' || maxJobs < 1) {
555 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n",
556 progname);
557 exit(1);
558 }
559 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL);
560 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
561 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0);
562 maxJobTokens = maxJobs;
563 break;
564 case 'k':
565 keepgoing = TRUE;
566 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL);
567 break;
568 case 'm':
569 if (argvalue == NULL) goto noarg;
570 /* look for magic parent directory search string */
571 if (strncmp(".../", argvalue, 4) == 0) {
572 if (!Dir_FindHereOrAbove(curdir, argvalue+4,
573 found_path, sizeof(found_path)))
574 break; /* nothing doing */
575 (void)Dir_AddDir(sysIncPath, found_path);
576 } else {
577 (void)Dir_AddDir(sysIncPath, argvalue);
578 }
579 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL);
580 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
581 break;
582 case 'n':
583 noExecute = TRUE;
584 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL);
585 break;
586 case 'q':
587 queryFlag = TRUE;
588 /* Kind of nonsensical, wot? */
589 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL);
590 break;
591 case 'r':
592 noBuiltins = TRUE;
593 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL);
594 break;
595 case 's':
596 beSilent = TRUE;
597 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL);
598 break;
599 case 't':
600 touchFlag = TRUE;
601 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL);
602 break;
603 case 'w':
604 enterFlag = TRUE;
605 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL);
606 break;
607 case '-':
608 dashDash = TRUE;
609 break;
610 default:
611 case '?':
612 #ifndef MAKE_NATIVE
613 fprintf(stderr, "getopt(%s) -> %d (%c)\n",
614 OPTFLAGS, c, c);
615 #endif
616 usage();
617 }
618 argv += arginc;
619 argc -= arginc;
620 }
621
622 oldVars = TRUE;
623
624 /*
625 * See if the rest of the arguments are variable assignments and
626 * perform them if so. Else take them to be targets and stuff them
627 * on the end of the "create" list.
628 */
629 for (; argc > 1; ++argv, --argc)
630 if (Parse_IsVar(argv[1])) {
631 Parse_DoVar(argv[1], VAR_CMD);
632 } else {
633 if (!*argv[1])
634 Punt("illegal (null) argument.");
635 if (*argv[1] == '-' && !dashDash)
636 goto rearg;
637 (void)Lst_AtEnd(create, bmake_strdup(argv[1]));
638 }
639
640 return;
641 noarg:
642 (void)fprintf(stderr, "%s: option requires an argument -- %c\n",
643 progname, c);
644 usage();
645 }
646
647 /*-
648 * Main_ParseArgLine --
649 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target
650 * is encountered and by main() when reading the .MAKEFLAGS envariable.
651 * Takes a line of arguments and breaks it into its
652 * component words and passes those words and the number of them to the
653 * MainParseArgs function.
654 * The line should have all its leading whitespace removed.
655 *
656 * Input:
657 * line Line to fracture
658 *
659 * Results:
660 * None
661 *
662 * Side Effects:
663 * Only those that come from the various arguments.
664 */
665 void
Main_ParseArgLine(const char * line)666 Main_ParseArgLine(const char *line)
667 {
668 char **argv; /* Manufactured argument vector */
669 int argc; /* Number of arguments in argv */
670 char *args; /* Space used by the args */
671 char *buf, *p1;
672 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1);
673 size_t len;
674
675 if (line == NULL)
676 return;
677 for (; *line == ' '; ++line)
678 continue;
679 if (!*line)
680 return;
681
682 #ifndef POSIX
683 {
684 /*
685 * $MAKE may simply be naming the make(1) binary
686 */
687 char *cp;
688
689 if (!(cp = strrchr(line, '/')))
690 cp = line;
691 if ((cp = strstr(cp, "make")) &&
692 strcmp(cp, "make") == 0)
693 return;
694 }
695 #endif
696 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2);
697 (void)snprintf(buf, len, "%s %s", argv0, line);
698 if (p1)
699 free(p1);
700
701 argv = brk_string(buf, &argc, TRUE, &args);
702 if (argv == NULL) {
703 Error("Unterminated quoted string [%s]", buf);
704 free(buf);
705 return;
706 }
707 free(buf);
708 MainParseArgs(argc, argv);
709
710 free(args);
711 free(argv);
712 }
713
714 Boolean
Main_SetObjdir(const char * path)715 Main_SetObjdir(const char *path)
716 {
717 struct stat sb;
718 char *p = NULL;
719 char buf[MAXPATHLEN + 1];
720 Boolean rc = FALSE;
721
722 /* expand variable substitutions */
723 if (strchr(path, '$') != 0) {
724 snprintf(buf, MAXPATHLEN, "%s", path);
725 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, 0);
726 }
727
728 if (path[0] != '/') {
729 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path);
730 path = buf;
731 }
732
733 /* look for the directory and try to chdir there */
734 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) {
735 if (chdir(path)) {
736 (void)fprintf(stderr, "make warning: %s: %s.\n",
737 path, strerror(errno));
738 } else {
739 strncpy(objdir, path, MAXPATHLEN);
740 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0);
741 setenv("PWD", objdir, 1);
742 Dir_InitDot();
743 rc = TRUE;
744 }
745 }
746
747 if (p)
748 free(p);
749 return rc;
750 }
751
752 /*-
753 * ReadAllMakefiles --
754 * wrapper around ReadMakefile() to read all.
755 *
756 * Results:
757 * TRUE if ok, FALSE on error
758 */
759 static int
ReadAllMakefiles(const void * p,const void * q)760 ReadAllMakefiles(const void *p, const void *q)
761 {
762 return (ReadMakefile(p, q) == 0);
763 }
764
765 int
str2Lst_Append(Lst lp,char * str,const char * sep)766 str2Lst_Append(Lst lp, char *str, const char *sep)
767 {
768 char *cp;
769 int n;
770
771 if (!sep)
772 sep = " \t";
773
774 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) {
775 (void)Lst_AtEnd(lp, cp);
776 n++;
777 }
778 return (n);
779 }
780
781 #ifdef SIGINFO
782 /*ARGSUSED*/
783 static void
siginfo(int signo MAKE_ATTR_UNUSED)784 siginfo(int signo MAKE_ATTR_UNUSED)
785 {
786 char dir[MAXPATHLEN];
787 char str[2 * MAXPATHLEN];
788 int len;
789 if (getcwd(dir, sizeof(dir)) == NULL)
790 return;
791 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir);
792 if (len > 0)
793 (void)write(STDERR_FILENO, str, (size_t)len);
794 }
795 #endif
796
797 /*
798 * Allow makefiles some control over the mode we run in.
799 */
800 void
MakeMode(const char * mode)801 MakeMode(const char *mode)
802 {
803 char *mp = NULL;
804
805 if (!mode)
806 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}", VAR_GLOBAL, 0);
807
808 if (mode && *mode) {
809 if (strstr(mode, "compat")) {
810 compatMake = TRUE;
811 forceJobs = FALSE;
812 }
813 #if USE_META
814 if (strstr(mode, "meta"))
815 meta_mode_init(mode);
816 #endif
817 }
818 if (mp)
819 free(mp);
820 }
821
822 /*-
823 * main --
824 * The main function, for obvious reasons. Initializes variables
825 * and a few modules, then parses the arguments give it in the
826 * environment and on the command line. Reads the system makefile
827 * followed by either Makefile, makefile or the file given by the
828 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the
829 * flags it has received by then uses either the Make or the Compat
830 * module to create the initial list of targets.
831 *
832 * Results:
833 * If -q was given, exits -1 if anything was out-of-date. Else it exits
834 * 0.
835 *
836 * Side Effects:
837 * The program exits when done. Targets are created. etc. etc. etc.
838 */
839 int
main(int argc,char ** argv)840 main(int argc, char **argv)
841 {
842 Lst targs; /* target nodes to create -- passed to Make_Init */
843 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */
844 struct stat sb, sa;
845 char *p1, *path;
846 char mdpath[MAXPATHLEN];
847 #ifdef FORCE_MACHINE
848 const char *machine = FORCE_MACHINE;
849 #else
850 const char *machine = getenv("MACHINE");
851 #endif
852 const char *machine_arch = getenv("MACHINE_ARCH");
853 char *syspath = getenv("MAKESYSPATH");
854 Lst sysMkPath; /* Path of sys.mk */
855 char *cp = NULL, *start;
856 /* avoid faults on read-only strings */
857 static char defsyspath[] = _PATH_DEFSYSPATH;
858 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */
859 struct timeval rightnow; /* to initialize random seed */
860 struct utsname utsname;
861
862 /* default to writing debug to stderr */
863 debug_file = stderr;
864
865 #ifdef SIGINFO
866 (void)bmake_signal(SIGINFO, siginfo);
867 #endif
868 /*
869 * Set the seed to produce a different random sequence
870 * on each program execution.
871 */
872 gettimeofday(&rightnow, NULL);
873 srandom(rightnow.tv_sec + rightnow.tv_usec);
874
875 if ((progname = strrchr(argv[0], '/')) != NULL)
876 progname++;
877 else
878 progname = argv[0];
879 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE))
880 /*
881 * get rid of resource limit on file descriptors
882 */
883 {
884 struct rlimit rl;
885 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 &&
886 rl.rlim_cur != rl.rlim_max) {
887 rl.rlim_cur = rl.rlim_max;
888 (void)setrlimit(RLIMIT_NOFILE, &rl);
889 }
890 }
891 #endif
892
893 if (uname(&utsname) == -1) {
894 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname,
895 strerror(errno));
896 exit(2);
897 }
898
899 /*
900 * Get the name of this type of MACHINE from utsname
901 * so we can share an executable for similar machines.
902 * (i.e. m68k: amiga hp300, mac68k, sun3, ...)
903 *
904 * Note that both MACHINE and MACHINE_ARCH are decided at
905 * run-time.
906 */
907 if (!machine) {
908 #ifdef MAKE_NATIVE
909 machine = utsname.machine;
910 #else
911 #ifdef MAKE_MACHINE
912 machine = MAKE_MACHINE;
913 #else
914 machine = "unknown";
915 #endif
916 #endif
917 }
918
919 if (!machine_arch) {
920 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH)
921 static char machine_arch_buf[sizeof(utsname.machine)];
922 int mib[2] = { CTL_HW, HW_MACHINE_ARCH };
923 size_t len = sizeof(machine_arch_buf);
924
925 if (sysctl(mib, __arraycount(mib), machine_arch_buf,
926 &len, NULL, 0) < 0) {
927 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname,
928 strerror(errno));
929 exit(2);
930 }
931
932 machine_arch = machine_arch_buf;
933 #else
934 #ifndef MACHINE_ARCH
935 #ifdef MAKE_MACHINE_ARCH
936 machine_arch = MAKE_MACHINE_ARCH;
937 #else
938 machine_arch = "unknown";
939 #endif
940 #else
941 machine_arch = MACHINE_ARCH;
942 #endif
943 #endif
944 }
945
946 myPid = getpid(); /* remember this for vFork() */
947
948 /*
949 * Just in case MAKEOBJDIR wants us to do something tricky.
950 */
951 Var_Init(); /* Initialize the lists of variables for
952 * parsing arguments */
953 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0);
954 Var_Set("MACHINE", machine, VAR_GLOBAL, 0);
955 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0);
956 #ifdef MAKE_VERSION
957 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0);
958 #endif
959 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */
960 /*
961 * This is the traditional preference for makefiles.
962 */
963 #ifndef MAKEFILE_PREFERENCE_LIST
964 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile"
965 #endif
966 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST,
967 VAR_GLOBAL, 0);
968 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0);
969
970 create = Lst_Init(FALSE);
971 makefiles = Lst_Init(FALSE);
972 printVars = FALSE;
973 debugVflag = FALSE;
974 variables = Lst_Init(FALSE);
975 beSilent = FALSE; /* Print commands as executed */
976 ignoreErrors = FALSE; /* Pay attention to non-zero returns */
977 noExecute = FALSE; /* Execute all commands */
978 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */
979 keepgoing = FALSE; /* Stop on error */
980 allPrecious = FALSE; /* Remove targets when interrupted */
981 queryFlag = FALSE; /* This is not just a check-run */
982 noBuiltins = FALSE; /* Read the built-in rules */
983 touchFlag = FALSE; /* Actually update targets */
984 debug = 0; /* No debug verbosity, please. */
985 jobsRunning = FALSE;
986
987 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */
988 maxJobTokens = maxJobs;
989 compatMake = FALSE; /* No compat mode */
990 ignorePWD = FALSE;
991
992 /*
993 * Initialize the parsing, directory and variable modules to prepare
994 * for the reading of inclusion paths and variable settings on the
995 * command line
996 */
997
998 /*
999 * Initialize various variables.
1000 * MAKE also gets this name, for compatibility
1001 * .MAKEFLAGS gets set to the empty string just in case.
1002 * MFLAGS also gets initialized empty, for compatibility.
1003 */
1004 Parse_Init();
1005 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) {
1006 /*
1007 * Leave alone if it is an absolute path, or if it does
1008 * not contain a '/' in which case we need to find it in
1009 * the path, like execvp(3) and the shells do.
1010 */
1011 p1 = argv[0];
1012 } else {
1013 /*
1014 * A relative path, canonicalize it.
1015 */
1016 p1 = realpath(argv[0], mdpath);
1017 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) {
1018 p1 = argv[0]; /* realpath failed */
1019 }
1020 }
1021 Var_Set("MAKE", p1, VAR_GLOBAL, 0);
1022 Var_Set(".MAKE", p1, VAR_GLOBAL, 0);
1023 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0);
1024 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0);
1025 Var_Set("MFLAGS", "", VAR_GLOBAL, 0);
1026 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0);
1027 /* some makefiles need to know this */
1028 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0);
1029
1030 /*
1031 * Set some other useful macros
1032 */
1033 {
1034 char tmp[64], *ep;
1035
1036 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0;
1037 if (makelevel < 0)
1038 makelevel = 0;
1039 snprintf(tmp, sizeof(tmp), "%d", makelevel);
1040 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0);
1041 snprintf(tmp, sizeof(tmp), "%u", myPid);
1042 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0);
1043 snprintf(tmp, sizeof(tmp), "%u", getppid());
1044 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0);
1045 }
1046 if (makelevel > 0) {
1047 char pn[1024];
1048 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel);
1049 progname = bmake_strdup(pn);
1050 }
1051
1052 #ifdef USE_META
1053 meta_init();
1054 #endif
1055 /*
1056 * First snag any flags out of the MAKE environment variable.
1057 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's
1058 * in a different format).
1059 */
1060 #ifdef POSIX
1061 p1 = explode(getenv("MAKEFLAGS"));
1062 Main_ParseArgLine(p1);
1063 free(p1);
1064 #else
1065 Main_ParseArgLine(getenv("MAKE"));
1066 #endif
1067
1068 /*
1069 * Find where we are (now).
1070 * We take care of PWD for the automounter below...
1071 */
1072 if (getcwd(curdir, MAXPATHLEN) == NULL) {
1073 (void)fprintf(stderr, "%s: getcwd: %s.\n",
1074 progname, strerror(errno));
1075 exit(2);
1076 }
1077
1078 MainParseArgs(argc, argv);
1079
1080 if (enterFlag)
1081 printf("%s: Entering directory `%s'\n", progname, curdir);
1082
1083 /*
1084 * Verify that cwd is sane.
1085 */
1086 if (stat(curdir, &sa) == -1) {
1087 (void)fprintf(stderr, "%s: %s: %s.\n",
1088 progname, curdir, strerror(errno));
1089 exit(2);
1090 }
1091
1092 /*
1093 * All this code is so that we know where we are when we start up
1094 * on a different machine with pmake.
1095 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX
1096 * since the value of curdir can vary depending on how we got
1097 * here. Ie sitting at a shell prompt (shell that provides $PWD)
1098 * or via subdir.mk in which case its likely a shell which does
1099 * not provide it.
1100 * So, to stop it breaking this case only, we ignore PWD if
1101 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform.
1102 */
1103 #ifndef NO_PWD_OVERRIDE
1104 if (!ignorePWD) {
1105 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL;
1106
1107 if ((pwd = getenv("PWD")) != NULL &&
1108 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) {
1109 const char *makeobjdir = Var_Value("MAKEOBJDIR",
1110 VAR_CMD, &ptmp2);
1111
1112 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) {
1113 if (stat(pwd, &sb) == 0 &&
1114 sa.st_ino == sb.st_ino &&
1115 sa.st_dev == sb.st_dev)
1116 (void)strncpy(curdir, pwd, MAXPATHLEN);
1117 }
1118 }
1119 free(ptmp1);
1120 free(ptmp2);
1121 }
1122 #endif
1123 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0);
1124
1125 /*
1126 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that,
1127 * MAKEOBJDIR is set in the environment, try only that value
1128 * and fall back to .CURDIR if it does not exist.
1129 *
1130 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and
1131 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none
1132 * of these paths exist, just use .CURDIR.
1133 */
1134 Dir_Init(curdir);
1135 (void)Main_SetObjdir(curdir);
1136
1137 if ((path = Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &p1)) != NULL) {
1138 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir);
1139 (void)Main_SetObjdir(mdpath);
1140 free(p1);
1141 } else if ((path = Var_Value("MAKEOBJDIR", VAR_CMD, &p1)) != NULL) {
1142 (void)Main_SetObjdir(path);
1143 free(p1);
1144 } else {
1145 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine);
1146 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) {
1147 (void)snprintf(mdpath, MAXPATHLEN, "%s%s",
1148 _PATH_OBJDIRPREFIX, curdir);
1149 (void)Main_SetObjdir(mdpath);
1150 }
1151 }
1152
1153 /*
1154 * Be compatible if user did not specify -j and did not explicitly
1155 * turned compatibility on
1156 */
1157 if (!compatMake && !forceJobs) {
1158 compatMake = TRUE;
1159 }
1160
1161 /*
1162 * Initialize archive, target and suffix modules in preparation for
1163 * parsing the makefile(s)
1164 */
1165 Arch_Init();
1166 Targ_Init();
1167 Suff_Init();
1168 Trace_Init(tracefile);
1169
1170 DEFAULT = NULL;
1171 (void)time(&now);
1172
1173 Trace_Log(MAKESTART, NULL);
1174
1175 /*
1176 * Set up the .TARGETS variable to contain the list of targets to be
1177 * created. If none specified, make the variable empty -- the parser
1178 * will fill the thing in with the default or .MAIN target.
1179 */
1180 if (!Lst_IsEmpty(create)) {
1181 LstNode ln;
1182
1183 for (ln = Lst_First(create); ln != NULL;
1184 ln = Lst_Succ(ln)) {
1185 char *name = (char *)Lst_Datum(ln);
1186
1187 Var_Append(".TARGETS", name, VAR_GLOBAL);
1188 }
1189 } else
1190 Var_Set(".TARGETS", "", VAR_GLOBAL, 0);
1191
1192
1193 /*
1194 * If no user-supplied system path was given (through the -m option)
1195 * add the directories from the DEFSYSPATH (more than one may be given
1196 * as dir1:...:dirn) to the system include path.
1197 */
1198 if (syspath == NULL || *syspath == '\0')
1199 syspath = defsyspath;
1200 else
1201 syspath = bmake_strdup(syspath);
1202
1203 for (start = syspath; *start != '\0'; start = cp) {
1204 for (cp = start; *cp != '\0' && *cp != ':'; cp++)
1205 continue;
1206 if (*cp == ':') {
1207 *cp++ = '\0';
1208 }
1209 /* look for magic parent directory search string */
1210 if (strncmp(".../", start, 4) != 0) {
1211 (void)Dir_AddDir(defIncPath, start);
1212 } else {
1213 if (Dir_FindHereOrAbove(curdir, start+4,
1214 found_path, sizeof(found_path))) {
1215 (void)Dir_AddDir(defIncPath, found_path);
1216 }
1217 }
1218 }
1219 if (syspath != defsyspath)
1220 free(syspath);
1221
1222 /*
1223 * Read in the built-in rules first, followed by the specified
1224 * makefile, if it was (makefile != NULL), or the default
1225 * makefile and Makefile, in that order, if it wasn't.
1226 */
1227 if (!noBuiltins) {
1228 LstNode ln;
1229
1230 sysMkPath = Lst_Init(FALSE);
1231 Dir_Expand(_PATH_DEFSYSMK,
1232 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath,
1233 sysMkPath);
1234 if (Lst_IsEmpty(sysMkPath))
1235 Fatal("%s: no system rules (%s).", progname,
1236 _PATH_DEFSYSMK);
1237 ln = Lst_Find(sysMkPath, NULL, ReadMakefile);
1238 if (ln == NULL)
1239 Fatal("%s: cannot open %s.", progname,
1240 (char *)Lst_Datum(ln));
1241 }
1242
1243 if (!Lst_IsEmpty(makefiles)) {
1244 LstNode ln;
1245
1246 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles);
1247 if (ln != NULL)
1248 Fatal("%s: cannot open %s.", progname,
1249 (char *)Lst_Datum(ln));
1250 } else {
1251 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}",
1252 VAR_CMD, 0);
1253 if (p1) {
1254 (void)str2Lst_Append(makefiles, p1, NULL);
1255 (void)Lst_Find(makefiles, NULL, ReadMakefile);
1256 free(p1);
1257 }
1258 }
1259
1260 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */
1261 if (!noBuiltins || !printVars) {
1262 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}",
1263 VAR_CMD, 0);
1264 doing_depend = TRUE;
1265 (void)ReadMakefile(makeDependfile, NULL);
1266 doing_depend = FALSE;
1267 }
1268
1269 MakeMode(NULL);
1270
1271 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL);
1272 if (p1)
1273 free(p1);
1274
1275 if (!compatMake)
1276 Job_ServerStart(maxJobTokens, jp_0, jp_1);
1277 if (DEBUG(JOB))
1278 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n",
1279 jp_0, jp_1, maxJobs, maxJobTokens, compatMake);
1280
1281 Main_ExportMAKEFLAGS(TRUE); /* initial export */
1282
1283 /*
1284 * For compatibility, look at the directories in the VPATH variable
1285 * and add them to the search path, if the variable is defined. The
1286 * variable's value is in the same format as the PATH envariable, i.e.
1287 * <directory>:<directory>:<directory>...
1288 */
1289 if (Var_Exists("VPATH", VAR_CMD)) {
1290 char *vpath, savec;
1291 /*
1292 * GCC stores string constants in read-only memory, but
1293 * Var_Subst will want to write this thing, so store it
1294 * in an array
1295 */
1296 static char VPATH[] = "${VPATH}";
1297
1298 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE);
1299 path = vpath;
1300 do {
1301 /* skip to end of directory */
1302 for (cp = path; *cp != ':' && *cp != '\0'; cp++)
1303 continue;
1304 /* Save terminator character so know when to stop */
1305 savec = *cp;
1306 *cp = '\0';
1307 /* Add directory to search path */
1308 (void)Dir_AddDir(dirSearchPath, path);
1309 *cp = savec;
1310 path = cp + 1;
1311 } while (savec == ':');
1312 free(vpath);
1313 }
1314
1315 /*
1316 * Now that all search paths have been read for suffixes et al, it's
1317 * time to add the default search path to their lists...
1318 */
1319 Suff_DoPaths();
1320
1321 /*
1322 * Propagate attributes through :: dependency lists.
1323 */
1324 Targ_Propagate();
1325
1326 /* print the initial graph, if the user requested it */
1327 if (DEBUG(GRAPH1))
1328 Targ_PrintGraph(1);
1329
1330 /* print the values of any variables requested by the user */
1331 if (printVars) {
1332 LstNode ln;
1333 Boolean expandVars;
1334
1335 if (debugVflag)
1336 expandVars = FALSE;
1337 else
1338 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE);
1339 for (ln = Lst_First(variables); ln != NULL;
1340 ln = Lst_Succ(ln)) {
1341 char *var = (char *)Lst_Datum(ln);
1342 char *value;
1343
1344 if (strchr(var, '$')) {
1345 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL, 0);
1346 } else if (expandVars) {
1347 char tmp[128];
1348
1349 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp)))
1350 Fatal("%s: variable name too big: %s",
1351 progname, var);
1352 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL, 0);
1353 } else {
1354 value = Var_Value(var, VAR_GLOBAL, &p1);
1355 }
1356 printf("%s\n", value ? value : "");
1357 if (p1)
1358 free(p1);
1359 }
1360 } else {
1361 /*
1362 * Have now read the entire graph and need to make a list of
1363 * targets to create. If none was given on the command line,
1364 * we consult the parsing module to find the main target(s)
1365 * to create.
1366 */
1367 if (Lst_IsEmpty(create))
1368 targs = Parse_MainName();
1369 else
1370 targs = Targ_FindList(create, TARG_CREATE);
1371
1372 if (!compatMake) {
1373 /*
1374 * Initialize job module before traversing the graph
1375 * now that any .BEGIN and .END targets have been read.
1376 * This is done only if the -q flag wasn't given
1377 * (to prevent the .BEGIN from being executed should
1378 * it exist).
1379 */
1380 if (!queryFlag) {
1381 Job_Init();
1382 jobsRunning = TRUE;
1383 }
1384
1385 /* Traverse the graph, checking on all the targets */
1386 outOfDate = Make_Run(targs);
1387 } else {
1388 /*
1389 * Compat_Init will take care of creating all the
1390 * targets as well as initializing the module.
1391 */
1392 Compat_Run(targs);
1393 }
1394 }
1395
1396 #ifdef CLEANUP
1397 Lst_Destroy(targs, NULL);
1398 Lst_Destroy(variables, NULL);
1399 Lst_Destroy(makefiles, NULL);
1400 Lst_Destroy(create, (FreeProc *)free);
1401 #endif
1402
1403 /* print the graph now it's been processed if the user requested it */
1404 if (DEBUG(GRAPH2))
1405 Targ_PrintGraph(2);
1406
1407 Trace_Log(MAKEEND, 0);
1408
1409 if (enterFlag)
1410 printf("%s: Leaving directory `%s'\n", progname, curdir);
1411
1412 Suff_End();
1413 Targ_End();
1414 Arch_End();
1415 Var_End();
1416 Parse_End();
1417 Dir_End();
1418 Job_End();
1419 Trace_End();
1420
1421 return outOfDate ? 1 : 0;
1422 }
1423
1424 /*-
1425 * ReadMakefile --
1426 * Open and parse the given makefile.
1427 *
1428 * Results:
1429 * 0 if ok. -1 if couldn't open file.
1430 *
1431 * Side Effects:
1432 * lots
1433 */
1434 static int
ReadMakefile(const void * p,const void * q MAKE_ATTR_UNUSED)1435 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED)
1436 {
1437 const char *fname = p; /* makefile to read */
1438 int fd;
1439 size_t len = MAXPATHLEN;
1440 char *name, *path = bmake_malloc(len);
1441
1442 if (!strcmp(fname, "-")) {
1443 Parse_File(NULL /*stdin*/, -1);
1444 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0);
1445 } else {
1446 /* if we've chdir'd, rebuild the path name */
1447 if (strcmp(curdir, objdir) && *fname != '/') {
1448 size_t plen = strlen(curdir) + strlen(fname) + 2;
1449 if (len < plen)
1450 path = bmake_realloc(path, len = 2 * plen);
1451
1452 (void)snprintf(path, len, "%s/%s", curdir, fname);
1453 fd = open(path, O_RDONLY);
1454 if (fd != -1) {
1455 fname = path;
1456 goto found;
1457 }
1458
1459 /* If curdir failed, try objdir (ala .depend) */
1460 plen = strlen(objdir) + strlen(fname) + 2;
1461 if (len < plen)
1462 path = bmake_realloc(path, len = 2 * plen);
1463 (void)snprintf(path, len, "%s/%s", objdir, fname);
1464 fd = open(path, O_RDONLY);
1465 if (fd != -1) {
1466 fname = path;
1467 goto found;
1468 }
1469 } else {
1470 fd = open(fname, O_RDONLY);
1471 if (fd != -1)
1472 goto found;
1473 }
1474 /* look in -I and system include directories. */
1475 name = Dir_FindFile(fname, parseIncPath);
1476 if (!name)
1477 name = Dir_FindFile(fname,
1478 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath);
1479 if (!name || (fd = open(name, O_RDONLY)) == -1) {
1480 if (name)
1481 free(name);
1482 free(path);
1483 return(-1);
1484 }
1485 fname = name;
1486 /*
1487 * set the MAKEFILE variable desired by System V fans -- the
1488 * placement of the setting here means it gets set to the last
1489 * makefile specified, as it is set by SysV make.
1490 */
1491 found:
1492 if (!doing_depend)
1493 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0);
1494 Parse_File(fname, fd);
1495 }
1496 free(path);
1497 return(0);
1498 }
1499
1500
1501
1502 /*-
1503 * Cmd_Exec --
1504 * Execute the command in cmd, and return the output of that command
1505 * in a string.
1506 *
1507 * Results:
1508 * A string containing the output of the command, or the empty string
1509 * If errnum is not NULL, it contains the reason for the command failure
1510 *
1511 * Side Effects:
1512 * The string must be freed by the caller.
1513 */
1514 char *
Cmd_Exec(const char * cmd,const char ** errnum)1515 Cmd_Exec(const char *cmd, const char **errnum)
1516 {
1517 const char *args[4]; /* Args for invoking the shell */
1518 int fds[2]; /* Pipe streams */
1519 int cpid; /* Child PID */
1520 int pid; /* PID from wait() */
1521 char *res; /* result */
1522 WAIT_T status; /* command exit status */
1523 Buffer buf; /* buffer to store the result */
1524 char *cp;
1525 int cc;
1526
1527
1528 *errnum = NULL;
1529
1530 if (!shellName)
1531 Shell_Init();
1532 /*
1533 * Set up arguments for shell
1534 */
1535 args[0] = shellName;
1536 args[1] = "-c";
1537 args[2] = cmd;
1538 args[3] = NULL;
1539
1540 /*
1541 * Open a pipe for fetching its output
1542 */
1543 if (pipe(fds) == -1) {
1544 *errnum = "Couldn't create pipe for \"%s\"";
1545 goto bad;
1546 }
1547
1548 /*
1549 * Fork
1550 */
1551 switch (cpid = vFork()) {
1552 case 0:
1553 /*
1554 * Close input side of pipe
1555 */
1556 (void)close(fds[0]);
1557
1558 /*
1559 * Duplicate the output stream to the shell's output, then
1560 * shut the extra thing down. Note we don't fetch the error
1561 * stream...why not? Why?
1562 */
1563 (void)dup2(fds[1], 1);
1564 (void)close(fds[1]);
1565
1566 Var_ExportVars();
1567
1568 (void)execv(shellPath, UNCONST(args));
1569 _exit(1);
1570 /*NOTREACHED*/
1571
1572 case -1:
1573 *errnum = "Couldn't exec \"%s\"";
1574 goto bad;
1575
1576 default:
1577 /*
1578 * No need for the writing half
1579 */
1580 (void)close(fds[1]);
1581
1582 Buf_Init(&buf, 0);
1583
1584 do {
1585 char result[BUFSIZ];
1586 cc = read(fds[0], result, sizeof(result));
1587 if (cc > 0)
1588 Buf_AddBytes(&buf, cc, result);
1589 }
1590 while (cc > 0 || (cc == -1 && errno == EINTR));
1591
1592 /*
1593 * Close the input side of the pipe.
1594 */
1595 (void)close(fds[0]);
1596
1597 /*
1598 * Wait for the process to exit.
1599 */
1600 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) {
1601 JobReapChild(pid, status, FALSE);
1602 continue;
1603 }
1604 cc = Buf_Size(&buf);
1605 res = Buf_Destroy(&buf, FALSE);
1606
1607 if (cc == 0)
1608 *errnum = "Couldn't read shell's output for \"%s\"";
1609
1610 if (WIFSIGNALED(status))
1611 *errnum = "\"%s\" exited on a signal";
1612 else if (WEXITSTATUS(status) != 0)
1613 *errnum = "\"%s\" returned non-zero status";
1614
1615 /*
1616 * Null-terminate the result, convert newlines to spaces and
1617 * install it in the variable.
1618 */
1619 res[cc] = '\0';
1620 cp = &res[cc];
1621
1622 if (cc > 0 && *--cp == '\n') {
1623 /*
1624 * A final newline is just stripped
1625 */
1626 *cp-- = '\0';
1627 }
1628 while (cp >= res) {
1629 if (*cp == '\n') {
1630 *cp = ' ';
1631 }
1632 cp--;
1633 }
1634 break;
1635 }
1636 return res;
1637 bad:
1638 res = bmake_malloc(1);
1639 *res = '\0';
1640 return res;
1641 }
1642
1643 /*-
1644 * Error --
1645 * Print an error message given its format.
1646 *
1647 * Results:
1648 * None.
1649 *
1650 * Side Effects:
1651 * The message is printed.
1652 */
1653 /* VARARGS */
1654 void
Error(const char * fmt,...)1655 Error(const char *fmt, ...)
1656 {
1657 va_list ap;
1658 FILE *err_file;
1659
1660 err_file = debug_file;
1661 if (err_file == stdout)
1662 err_file = stderr;
1663 (void)fflush(stdout);
1664 for (;;) {
1665 va_start(ap, fmt);
1666 fprintf(err_file, "%s: ", progname);
1667 (void)vfprintf(err_file, fmt, ap);
1668 va_end(ap);
1669 (void)fprintf(err_file, "\n");
1670 (void)fflush(err_file);
1671 if (err_file == stderr)
1672 break;
1673 err_file = stderr;
1674 }
1675 }
1676
1677 /*-
1678 * Fatal --
1679 * Produce a Fatal error message. If jobs are running, waits for them
1680 * to finish.
1681 *
1682 * Results:
1683 * None
1684 *
1685 * Side Effects:
1686 * The program exits
1687 */
1688 /* VARARGS */
1689 void
Fatal(const char * fmt,...)1690 Fatal(const char *fmt, ...)
1691 {
1692 va_list ap;
1693
1694 va_start(ap, fmt);
1695 if (jobsRunning)
1696 Job_Wait();
1697
1698 (void)fflush(stdout);
1699 (void)vfprintf(stderr, fmt, ap);
1700 va_end(ap);
1701 (void)fprintf(stderr, "\n");
1702 (void)fflush(stderr);
1703
1704 PrintOnError(NULL, NULL);
1705
1706 if (DEBUG(GRAPH2) || DEBUG(GRAPH3))
1707 Targ_PrintGraph(2);
1708 Trace_Log(MAKEERROR, 0);
1709 exit(2); /* Not 1 so -q can distinguish error */
1710 }
1711
1712 /*
1713 * Punt --
1714 * Major exception once jobs are being created. Kills all jobs, prints
1715 * a message and exits.
1716 *
1717 * Results:
1718 * None
1719 *
1720 * Side Effects:
1721 * All children are killed indiscriminately and the program Lib_Exits
1722 */
1723 /* VARARGS */
1724 void
Punt(const char * fmt,...)1725 Punt(const char *fmt, ...)
1726 {
1727 va_list ap;
1728
1729 va_start(ap, fmt);
1730 (void)fflush(stdout);
1731 (void)fprintf(stderr, "%s: ", progname);
1732 (void)vfprintf(stderr, fmt, ap);
1733 va_end(ap);
1734 (void)fprintf(stderr, "\n");
1735 (void)fflush(stderr);
1736
1737 PrintOnError(NULL, NULL);
1738
1739 DieHorribly();
1740 }
1741
1742 /*-
1743 * DieHorribly --
1744 * Exit without giving a message.
1745 *
1746 * Results:
1747 * None
1748 *
1749 * Side Effects:
1750 * A big one...
1751 */
1752 void
DieHorribly(void)1753 DieHorribly(void)
1754 {
1755 if (jobsRunning)
1756 Job_AbortAll();
1757 if (DEBUG(GRAPH2))
1758 Targ_PrintGraph(2);
1759 Trace_Log(MAKEERROR, 0);
1760 exit(2); /* Not 1, so -q can distinguish error */
1761 }
1762
1763 /*
1764 * Finish --
1765 * Called when aborting due to errors in child shell to signal
1766 * abnormal exit.
1767 *
1768 * Results:
1769 * None
1770 *
1771 * Side Effects:
1772 * The program exits
1773 */
1774 void
Finish(int errors)1775 Finish(int errors)
1776 /* number of errors encountered in Make_Make */
1777 {
1778 Fatal("%d error%s", errors, errors == 1 ? "" : "s");
1779 }
1780
1781 /*
1782 * eunlink --
1783 * Remove a file carefully, avoiding directories.
1784 */
1785 int
eunlink(const char * file)1786 eunlink(const char *file)
1787 {
1788 struct stat st;
1789
1790 if (lstat(file, &st) == -1)
1791 return -1;
1792
1793 if (S_ISDIR(st.st_mode)) {
1794 errno = EISDIR;
1795 return -1;
1796 }
1797 return unlink(file);
1798 }
1799
1800 /*
1801 * execError --
1802 * Print why exec failed, avoiding stdio.
1803 */
1804 void
execError(const char * af,const char * av)1805 execError(const char *af, const char *av)
1806 {
1807 #ifdef USE_IOVEC
1808 int i = 0;
1809 struct iovec iov[8];
1810 #define IOADD(s) \
1811 (void)(iov[i].iov_base = UNCONST(s), \
1812 iov[i].iov_len = strlen(iov[i].iov_base), \
1813 i++)
1814 #else
1815 #define IOADD(s) (void)write(2, s, strlen(s))
1816 #endif
1817
1818 IOADD(progname);
1819 IOADD(": ");
1820 IOADD(af);
1821 IOADD("(");
1822 IOADD(av);
1823 IOADD(") failed (");
1824 IOADD(strerror(errno));
1825 IOADD(")\n");
1826
1827 #ifdef USE_IOVEC
1828 while (writev(2, iov, 8) == -1 && errno == EAGAIN)
1829 continue;
1830 #endif
1831 }
1832
1833 /*
1834 * usage --
1835 * exit with usage message
1836 */
1837 static void
usage(void)1838 usage(void)
1839 {
1840 char *p;
1841 if ((p = strchr(progname, '[')) != NULL)
1842 *p = '\0';
1843
1844 (void)fprintf(stderr,
1845 "usage: %s [-BeikNnqrstWwX] \n\
1846 [-C directory] [-D variable] [-d flags] [-f makefile]\n\
1847 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\
1848 [-V variable] [variable=value] [target ...]\n", progname);
1849 exit(2);
1850 }
1851
1852
1853 int
PrintAddr(void * a,void * b)1854 PrintAddr(void *a, void *b)
1855 {
1856 printf("%lx ", (unsigned long) a);
1857 return b ? 0 : 0;
1858 }
1859
1860
1861
1862 void
PrintOnError(GNode * gn,const char * s)1863 PrintOnError(GNode *gn, const char *s)
1864 {
1865 static GNode *en = NULL;
1866 char tmp[64];
1867 char *cp;
1868
1869 if (s)
1870 printf("%s", s);
1871
1872 printf("\n%s: stopped in %s\n", progname, curdir);
1873
1874 if (en)
1875 return; /* we've been here! */
1876 if (gn) {
1877 /*
1878 * We can print this even if there is no .ERROR target.
1879 */
1880 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0);
1881 }
1882 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}",
1883 sizeof(tmp) - 1);
1884 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0);
1885 if (cp) {
1886 if (*cp)
1887 printf("%s", cp);
1888 free(cp);
1889 }
1890 /*
1891 * Finally, see if there is a .ERROR target, and run it if so.
1892 */
1893 en = Targ_FindNode(".ERROR", TARG_NOCREATE);
1894 if (en) {
1895 en->type |= OP_SPECIAL;
1896 Compat_Make(en, en);
1897 }
1898 }
1899
1900 void
Main_ExportMAKEFLAGS(Boolean first)1901 Main_ExportMAKEFLAGS(Boolean first)
1902 {
1903 static int once = 1;
1904 char tmp[64];
1905 char *s;
1906
1907 if (once != first)
1908 return;
1909 once = 0;
1910
1911 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}",
1912 sizeof(tmp));
1913 s = Var_Subst(NULL, tmp, VAR_CMD, 0);
1914 if (s && *s) {
1915 #ifdef POSIX
1916 setenv("MAKEFLAGS", s, 1);
1917 #else
1918 setenv("MAKE", s, 1);
1919 #endif
1920 }
1921 }
1922
1923 char *
getTmpdir(void)1924 getTmpdir(void)
1925 {
1926 static char *tmpdir = NULL;
1927
1928 if (!tmpdir) {
1929 struct stat st;
1930
1931 /*
1932 * Honor $TMPDIR but only if it is valid.
1933 * Ensure it ends with /.
1934 */
1935 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL, 0);
1936 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) {
1937 free(tmpdir);
1938 tmpdir = bmake_strdup(_PATH_TMP);
1939 }
1940 }
1941 return tmpdir;
1942 }
1943
1944 /*
1945 * Create and open a temp file using "pattern".
1946 * If "fnamep" is provided set it to a copy of the filename created.
1947 * Otherwise unlink the file once open.
1948 */
1949 int
mkTempFile(const char * pattern,char ** fnamep)1950 mkTempFile(const char *pattern, char **fnamep)
1951 {
1952 static char *tmpdir = NULL;
1953 char tfile[MAXPATHLEN];
1954 int fd;
1955
1956 if (!pattern)
1957 pattern = TMPPAT;
1958 if (!tmpdir)
1959 tmpdir = getTmpdir();
1960 if (pattern[0] == '/') {
1961 snprintf(tfile, sizeof(tfile), "%s", pattern);
1962 } else {
1963 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern);
1964 }
1965 if ((fd = mkstemp(tfile)) < 0)
1966 Punt("Could not create temporary file %s: %s", tfile, strerror(errno));
1967 if (fnamep) {
1968 *fnamep = bmake_strdup(tfile);
1969 } else {
1970 unlink(tfile); /* we just want the descriptor */
1971 }
1972 return fd;
1973 }
1974
1975
1976 /*
1977 * Return a Boolean based on setting of a knob.
1978 *
1979 * If the knob is not set, the supplied default is the return value.
1980 * If set, anything that looks or smells like "No", "False", "Off", "0" etc,
1981 * is FALSE, otherwise TRUE.
1982 */
1983 Boolean
getBoolean(const char * name,Boolean bf)1984 getBoolean(const char *name, Boolean bf)
1985 {
1986 char tmp[64];
1987 char *cp;
1988
1989 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) {
1990 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, 0);
1991
1992 if (cp) {
1993 switch(*cp) {
1994 case '\0': /* not set - the default wins */
1995 break;
1996 case '0':
1997 case 'f':
1998 case 'n':
1999 bf = FALSE;
2000 break;
2001 case 'o':
2002 switch (cp[1]) {
2003 case 'f':
2004 bf = FALSE;
2005 break;
2006 default:
2007 bf = TRUE;
2008 break;
2009 }
2010 break;
2011 default:
2012 bf = TRUE;
2013 break;
2014 }
2015 free(cp);
2016 }
2017 }
2018 return (bf);
2019 }
2020