1 /* $NetBSD: main.c,v 1.641 2025/03/31 14:35:22 riastradh 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 /*
72 * The main file for this entire program. Exit routines etc. reside here.
73 *
74 * Utility functions defined in this file:
75 *
76 * Main_ParseArgLine
77 * Parse and process command line arguments from a
78 * single string. Used to implement the special targets
79 * .MFLAGS and .MAKEFLAGS.
80 *
81 * Error Print a tagged error message.
82 *
83 * Fatal Print an error message and exit.
84 *
85 * Punt Abort all jobs and exit with a message.
86 */
87
88 #include <sys/types.h>
89 #include <sys/time.h>
90 #include <sys/param.h>
91 #include <sys/resource.h>
92 #include <sys/stat.h>
93 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL)
94 #include <sys/sysctl.h>
95 #endif
96 #include <sys/utsname.h>
97 #include "wait.h"
98
99 #include <errno.h>
100 #include <signal.h>
101 #include <stdarg.h>
102 #include <time.h>
103
104 #include "make.h"
105 #include "dir.h"
106 #include "job.h"
107 #include "pathnames.h"
108 #include "trace.h"
109
110 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */
111 MAKE_RCSID("$NetBSD: main.c,v 1.641 2025/03/31 14:35:22 riastradh Exp $");
112 #if defined(MAKE_NATIVE)
113 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 "
114 "The Regents of the University of California. "
115 "All rights reserved.");
116 #endif
117
118 #ifndef __arraycount
119 # define __arraycount(__x) (sizeof(__x) / sizeof(__x[0]))
120 #endif
121
122 CmdOpts opts;
123 time_t now; /* Time at start of make */
124 GNode *defaultNode; /* .DEFAULT node */
125 bool allPrecious; /* .PRECIOUS given on a line by itself */
126 bool deleteOnError; /* .DELETE_ON_ERROR: set */
127
128 static int maxJobTokens; /* -j argument */
129 static bool enterFlagObj; /* -w and objdir != srcdir */
130
131 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */
132 bool doing_depend; /* Set while reading .depend */
133 static bool jobsRunning; /* true if the jobs might be running */
134 static const char *tracefile;
135 static bool ReadMakefile(const char *);
136 static void purge_relative_cached_realpaths(void);
137
138 static bool ignorePWD; /* if we use -C, PWD is meaningless */
139 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */
140 char curdir[MAXPATHLEN + 1]; /* Startup directory */
141 const char *progname;
142 char *makeDependfile;
143 pid_t myPid;
144 int makelevel;
145
146 bool forceJobs = false;
147 static int main_errors = 0;
148 static HashTable cached_realpaths;
149
150 /*
151 * For compatibility with the POSIX version of MAKEFLAGS that includes
152 * all the options without '-', convert 'flags' to '-f -l -a -g -s '.
153 */
154 static char *
explode(const char * flags)155 explode(const char *flags)
156 {
157 char *exploded, *ep;
158 const char *p;
159
160 if (flags == NULL)
161 return NULL;
162
163 for (p = flags; *p != '\0'; p++)
164 if (!ch_isalpha(*p))
165 return bmake_strdup(flags);
166
167 exploded = bmake_malloc((size_t)(p - flags) * 3 + 1);
168 for (p = flags, ep = exploded; *p != '\0'; p++) {
169 *ep++ = '-';
170 *ep++ = *p;
171 *ep++ = ' ';
172 }
173 *ep = '\0';
174 return exploded;
175 }
176
177 MAKE_ATTR_DEAD static void
usage(void)178 usage(void)
179 {
180 size_t prognameLen = strcspn(progname, "[");
181
182 (void)fprintf(stderr,
183 "usage: %.*s [-BeikNnqrSstWwX]\n"
184 " [-C directory] [-D variable] [-d flags] [-f makefile]\n"
185 " [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n"
186 " [-V variable] [-v variable] [variable=value] [target ...]\n",
187 (int)prognameLen, progname);
188 exit(2);
189 }
190
191 static void
MainParseArgDebugFile(const char * arg)192 MainParseArgDebugFile(const char *arg)
193 {
194 const char *mode;
195 size_t len;
196 char *fname;
197
198 if (opts.debug_file != stdout && opts.debug_file != stderr)
199 fclose(opts.debug_file);
200
201 if (*arg == '+') {
202 arg++;
203 mode = "a";
204 } else
205 mode = "w";
206
207 if (strcmp(arg, "stdout") == 0) {
208 opts.debug_file = stdout;
209 return;
210 }
211 if (strcmp(arg, "stderr") == 0) {
212 opts.debug_file = stderr;
213 return;
214 }
215
216 len = strlen(arg);
217 fname = bmake_malloc(len + 20);
218 memcpy(fname, arg, len + 1);
219
220 /* Replace the trailing '%d' after '.%d' with the pid. */
221 if (len >= 3 && memcmp(fname + len - 3, ".%d", 3) == 0)
222 snprintf(fname + len - 2, 20, "%d", getpid());
223
224 opts.debug_file = fopen(fname, mode);
225 if (opts.debug_file == NULL) {
226 fprintf(stderr, "Cannot open debug file \"%s\"\n", fname);
227 exit(2);
228 }
229 free(fname);
230 }
231
232 static void
MainParseArgDebug(const char * argvalue)233 MainParseArgDebug(const char *argvalue)
234 {
235 const char *modules;
236 DebugFlags debug = opts.debug;
237
238 for (modules = argvalue; *modules != '\0'; modules++) {
239 switch (*modules) {
240 case '0': /* undocumented, only intended for tests */
241 memset(&debug, 0, sizeof(debug));
242 break;
243 case 'A':
244 memset(&debug, ~0, sizeof(debug));
245 break;
246 case 'a':
247 debug.DEBUG_ARCH = true;
248 break;
249 case 'C':
250 debug.DEBUG_CWD = true;
251 break;
252 case 'c':
253 debug.DEBUG_COND = true;
254 break;
255 case 'd':
256 debug.DEBUG_DIR = true;
257 break;
258 case 'e':
259 debug.DEBUG_ERROR = true;
260 break;
261 case 'f':
262 debug.DEBUG_FOR = true;
263 break;
264 case 'g':
265 if (modules[1] == '1') {
266 debug.DEBUG_GRAPH1 = true;
267 modules++;
268 } else if (modules[1] == '2') {
269 debug.DEBUG_GRAPH2 = true;
270 modules++;
271 } else if (modules[1] == '3') {
272 debug.DEBUG_GRAPH3 = true;
273 modules++;
274 }
275 break;
276 case 'h':
277 debug.DEBUG_HASH = true;
278 break;
279 case 'j':
280 debug.DEBUG_JOB = true;
281 break;
282 case 'L':
283 opts.strict = true;
284 break;
285 case 'l':
286 debug.DEBUG_LOUD = true;
287 break;
288 case 'M':
289 debug.DEBUG_META = true;
290 break;
291 case 'm':
292 debug.DEBUG_MAKE = true;
293 break;
294 case 'n':
295 debug.DEBUG_SCRIPT = true;
296 break;
297 case 'p':
298 debug.DEBUG_PARSE = true;
299 break;
300 case 's':
301 debug.DEBUG_SUFF = true;
302 break;
303 case 't':
304 debug.DEBUG_TARG = true;
305 break;
306 case 'V':
307 opts.debugVflag = true;
308 break;
309 case 'v':
310 debug.DEBUG_VAR = true;
311 break;
312 case 'x':
313 debug.DEBUG_SHELL = true;
314 break;
315 case 'F':
316 MainParseArgDebugFile(modules + 1);
317 goto finish;
318 default:
319 (void)fprintf(stderr,
320 "%s: illegal argument to d option -- %c\n",
321 progname, *modules);
322 usage();
323 }
324 }
325
326 finish:
327 opts.debug = debug;
328
329 setvbuf(opts.debug_file, NULL, _IONBF, 0);
330 if (opts.debug_file != stdout)
331 setvbuf(stdout, NULL, _IOLBF, 0);
332 }
333
334 /* Is path relative or does it contain any relative component "." or ".."? */
335 static bool
IsRelativePath(const char * path)336 IsRelativePath(const char *path)
337 {
338 const char *p;
339
340 if (path[0] != '/')
341 return true;
342 p = path;
343 while ((p = strstr(p, "/.")) != NULL) {
344 p += 2;
345 if (*p == '.')
346 p++;
347 if (*p == '/' || *p == '\0')
348 return true;
349 }
350 return false;
351 }
352
353 static void
MainParseArgChdir(const char * argvalue)354 MainParseArgChdir(const char *argvalue)
355 {
356 struct stat sa, sb;
357
358 if (chdir(argvalue) == -1) {
359 (void)fprintf(stderr, "%s: chdir %s: %s\n",
360 progname, argvalue, strerror(errno));
361 exit(2); /* Not 1 so -q can distinguish error */
362 }
363 if (getcwd(curdir, MAXPATHLEN) == NULL) {
364 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno));
365 exit(2);
366 }
367 if (!IsRelativePath(argvalue) &&
368 stat(argvalue, &sa) != -1 &&
369 stat(curdir, &sb) != -1 &&
370 sa.st_ino == sb.st_ino &&
371 sa.st_dev == sb.st_dev)
372 snprintf(curdir, MAXPATHLEN, "%s", argvalue);
373 ignorePWD = true;
374 }
375
376 static void
MainParseArgJobsInternal(const char * argvalue)377 MainParseArgJobsInternal(const char *argvalue)
378 {
379 char end;
380 if (sscanf(argvalue, "%d,%d%c", &jp_0, &jp_1, &end) != 2) {
381 (void)fprintf(stderr,
382 "%s: internal error -- J option malformed (%s)\n",
383 progname, argvalue);
384 usage();
385 }
386 if ((fcntl(jp_0, F_GETFD, 0) < 0) ||
387 (fcntl(jp_1, F_GETFD, 0) < 0)) {
388 jp_0 = -1;
389 jp_1 = -1;
390 opts.compatMake = true;
391 } else {
392 Global_Append(MAKEFLAGS, "-J");
393 Global_Append(MAKEFLAGS, argvalue);
394 }
395 }
396
397 static void
MainParseArgJobs(const char * arg)398 MainParseArgJobs(const char *arg)
399 {
400 const char *p;
401 char *end;
402 char v[12];
403
404 forceJobs = true;
405 opts.maxJobs = (int)strtol(arg, &end, 0);
406 p = end;
407 #ifdef _SC_NPROCESSORS_ONLN
408 if (*p != '\0') {
409 double d;
410
411 if (*p == 'C')
412 d = (opts.maxJobs > 0) ? opts.maxJobs : 1;
413 else if (*p == '.') {
414 d = strtod(arg, &end);
415 p = end;
416 } else
417 d = 0.0;
418 if (d > 0.0) {
419 p = "";
420 opts.maxJobs = (int)sysconf(_SC_NPROCESSORS_ONLN);
421 opts.maxJobs = (int)(d * (double)opts.maxJobs);
422 }
423 }
424 #endif
425 if (*p != '\0' || opts.maxJobs < 1) {
426 (void)fprintf(stderr,
427 "%s: argument '%s' to option '-j' "
428 "must be a positive number\n",
429 progname, arg);
430 exit(2); /* Not 1 so -q can distinguish error */
431 }
432 snprintf(v, sizeof(v), "%d", opts.maxJobs);
433 Global_Append(MAKEFLAGS, "-j");
434 Global_Append(MAKEFLAGS, v);
435 Global_Set(".MAKE.JOBS", v);
436 maxJobTokens = opts.maxJobs;
437 }
438
439 static void
MainParseArgSysInc(const char * argvalue)440 MainParseArgSysInc(const char *argvalue)
441 {
442 if (strncmp(argvalue, ".../", 4) == 0) {
443 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4);
444 if (found_path == NULL)
445 return;
446 (void)SearchPath_Add(sysIncPath, found_path);
447 free(found_path);
448 } else {
449 (void)SearchPath_Add(sysIncPath, argvalue);
450 }
451 Global_Append(MAKEFLAGS, "-m");
452 Global_Append(MAKEFLAGS, argvalue);
453 Dir_SetSYSPATH();
454 }
455
456 static bool
MainParseOption(char c,const char * argvalue)457 MainParseOption(char c, const char *argvalue)
458 {
459 switch (c) {
460 case '\0':
461 break;
462 case 'B':
463 opts.compatMake = true;
464 Global_Append(MAKEFLAGS, "-B");
465 Global_Set(".MAKE.MODE", "compat");
466 break;
467 case 'C':
468 MainParseArgChdir(argvalue);
469 break;
470 case 'D':
471 if (argvalue[0] == '\0')
472 return false;
473 Var_SetExpand(SCOPE_GLOBAL, argvalue, "1");
474 Global_Append(MAKEFLAGS, "-D");
475 Global_Append(MAKEFLAGS, argvalue);
476 break;
477 case 'I':
478 SearchPath_Add(parseIncPath, argvalue);
479 Global_Append(MAKEFLAGS, "-I");
480 Global_Append(MAKEFLAGS, argvalue);
481 break;
482 case 'J':
483 MainParseArgJobsInternal(argvalue);
484 break;
485 case 'N':
486 opts.noExecute = true;
487 opts.noRecursiveExecute = true;
488 Global_Append(MAKEFLAGS, "-N");
489 break;
490 case 'S':
491 opts.keepgoing = false;
492 Global_Append(MAKEFLAGS, "-S");
493 break;
494 case 'T':
495 tracefile = bmake_strdup(argvalue);
496 Global_Append(MAKEFLAGS, "-T");
497 Global_Append(MAKEFLAGS, argvalue);
498 break;
499 case 'V':
500 case 'v':
501 opts.printVars = c == 'v' ? PVM_EXPANDED : PVM_UNEXPANDED;
502 Lst_Append(&opts.variables, bmake_strdup(argvalue));
503 /* XXX: Why always -V? */
504 Global_Append(MAKEFLAGS, "-V");
505 Global_Append(MAKEFLAGS, argvalue);
506 break;
507 case 'W':
508 opts.parseWarnFatal = true;
509 /* XXX: why no Global_Append? */
510 break;
511 case 'X':
512 opts.varNoExportEnv = true;
513 Global_Append(MAKEFLAGS, "-X");
514 break;
515 case 'd':
516 /* If '-d-opts' don't pass to children */
517 if (argvalue[0] == '-')
518 argvalue++;
519 else {
520 Global_Append(MAKEFLAGS, "-d");
521 Global_Append(MAKEFLAGS, argvalue);
522 }
523 MainParseArgDebug(argvalue);
524 break;
525 case 'e':
526 opts.checkEnvFirst = true;
527 Global_Append(MAKEFLAGS, "-e");
528 break;
529 case 'f':
530 Lst_Append(&opts.makefiles, bmake_strdup(argvalue));
531 break;
532 case 'i':
533 opts.ignoreErrors = true;
534 Global_Append(MAKEFLAGS, "-i");
535 break;
536 case 'j':
537 MainParseArgJobs(argvalue);
538 break;
539 case 'k':
540 opts.keepgoing = true;
541 Global_Append(MAKEFLAGS, "-k");
542 break;
543 case 'm':
544 MainParseArgSysInc(argvalue);
545 /* XXX: why no Var_Append? */
546 break;
547 case 'n':
548 opts.noExecute = true;
549 Global_Append(MAKEFLAGS, "-n");
550 break;
551 case 'q':
552 opts.query = true;
553 /* Kind of nonsensical, wot? */
554 Global_Append(MAKEFLAGS, "-q");
555 break;
556 case 'r':
557 opts.noBuiltins = true;
558 Global_Append(MAKEFLAGS, "-r");
559 break;
560 case 's':
561 opts.silent = true;
562 Global_Append(MAKEFLAGS, "-s");
563 break;
564 case 't':
565 opts.touch = true;
566 Global_Append(MAKEFLAGS, "-t");
567 break;
568 case 'w':
569 opts.enterFlag = true;
570 Global_Append(MAKEFLAGS, "-w");
571 break;
572 default:
573 usage();
574 }
575 return true;
576 }
577
578 /*
579 * Parse the given arguments. Called from main() and from
580 * Main_ParseArgLine() when the .MAKEFLAGS target is used.
581 *
582 * The arguments must be treated as read-only and will be freed after the
583 * call.
584 *
585 * XXX: Deal with command line overriding .MAKEFLAGS in makefile
586 */
587 static void
MainParseArgs(int argc,char ** argv)588 MainParseArgs(int argc, char **argv)
589 {
590 char c;
591 int arginc;
592 char *argvalue;
593 char *optscan;
594 bool inOption, dashDash = false;
595
596 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w";
597 /* Can't actually use getopt(3) because rescanning is not portable */
598
599 rearg:
600 inOption = false;
601 optscan = NULL;
602 while (argc > 1) {
603 const char *optspec;
604 if (!inOption)
605 optscan = argv[1];
606 c = *optscan++;
607 arginc = 0;
608 if (inOption) {
609 if (c == '\0') {
610 argv++;
611 argc--;
612 inOption = false;
613 continue;
614 }
615 } else {
616 if (c != '-' || dashDash)
617 break;
618 inOption = true;
619 c = *optscan++;
620 }
621 /* '-' found at some earlier point */
622 optspec = strchr(optspecs, c);
623 if (c != '\0' && optspec != NULL && optspec[1] == ':') {
624 /*
625 * -<something> found, and <something> should have an
626 * argument
627 */
628 inOption = false;
629 arginc = 1;
630 argvalue = optscan;
631 if (*argvalue == '\0') {
632 if (argc < 3)
633 goto noarg;
634 argvalue = argv[2];
635 arginc = 2;
636 }
637 } else {
638 argvalue = NULL;
639 }
640 switch (c) {
641 case '\0':
642 arginc = 1;
643 inOption = false;
644 break;
645 case '-':
646 dashDash = true;
647 break;
648 default:
649 if (!MainParseOption(c, argvalue))
650 goto noarg;
651 }
652 argv += arginc;
653 argc -= arginc;
654 }
655
656 /*
657 * See if the rest of the arguments are variable assignments and
658 * perform them if so. Else take them to be targets and stuff them
659 * on the end of the "create" list.
660 */
661 for (; argc > 1; argv++, argc--) {
662 if (!Parse_VarAssign(argv[1], false, SCOPE_CMDLINE)) {
663 if (argv[1][0] == '\0')
664 Punt("illegal (null) argument.");
665 if (argv[1][0] == '-' && !dashDash)
666 goto rearg;
667 Lst_Append(&opts.create, bmake_strdup(argv[1]));
668 }
669 }
670
671 return;
672 noarg:
673 (void)fprintf(stderr, "%s: option requires an argument -- %c\n",
674 progname, c);
675 usage();
676 }
677
678 /*
679 * Break a line of arguments into words and parse them.
680 *
681 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and
682 * by main() when reading the MAKEFLAGS environment variable.
683 */
684 void
Main_ParseArgLine(const char * line)685 Main_ParseArgLine(const char *line)
686 {
687 Words words;
688 char *buf;
689 const char *p;
690
691 if (line == NULL)
692 return;
693 for (p = line; *p == ' '; p++)
694 continue;
695 if (p[0] == '\0')
696 return;
697
698 {
699 FStr argv0 = Var_Value(SCOPE_GLOBAL, ".MAKE");
700 buf = str_concat3(argv0.str, " ", p);
701 FStr_Done(&argv0);
702 }
703
704 words = Str_Words(buf, true);
705 if (words.words == NULL) {
706 Error("Unterminated quoted string [%s]", buf);
707 free(buf);
708 return;
709 }
710 free(buf);
711 MainParseArgs((int)words.len, words.words);
712
713 Words_Free(words);
714 }
715
716 bool
Main_SetObjdir(bool writable,const char * fmt,...)717 Main_SetObjdir(bool writable, const char *fmt, ...)
718 {
719 struct stat sb;
720 char *path;
721 char buf[MAXPATHLEN + 1];
722 char buf2[MAXPATHLEN + 1];
723 va_list ap;
724
725 va_start(ap, fmt);
726 vsnprintf(path = buf, MAXPATHLEN, fmt, ap);
727 va_end(ap);
728
729 if (path[0] != '/') {
730 if (snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path) <= MAXPATHLEN)
731 path = buf2;
732 else
733 return false;
734 }
735
736 /* look for the directory and try to chdir there */
737 if (stat(path, &sb) != 0 || !S_ISDIR(sb.st_mode))
738 return false;
739
740 if ((writable && access(path, W_OK) != 0) || chdir(path) != 0) {
741 (void)fprintf(stderr, "%s: warning: %s: %s.\n",
742 progname, path, strerror(errno));
743 /* Allow debugging how we got here - not always obvious */
744 if (GetBooleanExpr("${MAKE_DEBUG_OBJDIR_CHECK_WRITABLE}",
745 false))
746 PrintOnError(NULL, "");
747 return false;
748 }
749
750 snprintf(objdir, sizeof objdir, "%s", path);
751 Global_Set(".OBJDIR", objdir);
752 setenv("PWD", objdir, 1);
753 Dir_InitDot();
754 purge_relative_cached_realpaths();
755 if (opts.enterFlag && strcmp(objdir, curdir) != 0)
756 enterFlagObj = true;
757 return true;
758 }
759
760 static bool
SetVarObjdir(bool writable,const char * var,const char * suffix)761 SetVarObjdir(bool writable, const char *var, const char *suffix)
762 {
763 FStr path = Var_Value(SCOPE_CMDLINE, var);
764
765 if (path.str == NULL || path.str[0] == '\0') {
766 FStr_Done(&path);
767 return false;
768 }
769
770 Var_Expand(&path, SCOPE_GLOBAL, VARE_EVAL);
771
772 (void)Main_SetObjdir(writable, "%s%s", path.str, suffix);
773
774 FStr_Done(&path);
775 return true;
776 }
777
778 /*
779 * Splits str into words (in-place, modifying it), adding them to the list.
780 * The string must be kept alive as long as the list.
781 */
782 void
AppendWords(StringList * lp,char * str)783 AppendWords(StringList *lp, char *str)
784 {
785 char *p;
786 const char *sep = " \t";
787
788 for (p = strtok(str, sep); p != NULL; p = strtok(NULL, sep))
789 Lst_Append(lp, p);
790 }
791
792 #ifdef SIGINFO
793 static void
siginfo(int signo MAKE_ATTR_UNUSED)794 siginfo(int signo MAKE_ATTR_UNUSED)
795 {
796 char dir[MAXPATHLEN];
797 char str[2 * MAXPATHLEN];
798 int len;
799 if (getcwd(dir, sizeof dir) == NULL)
800 return;
801 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir);
802 if (len > 0)
803 (void)write(STDERR_FILENO, str, (size_t)len);
804 }
805 #endif
806
807 /* Allow makefiles some control over the mode we run in. */
808 static void
MakeMode(void)809 MakeMode(void)
810 {
811 char *mode = Var_Subst("${.MAKE.MODE:tl}", SCOPE_GLOBAL, VARE_EVAL);
812 /* TODO: handle errors */
813
814 if (mode[0] != '\0') {
815 if (strstr(mode, "compat") != NULL) {
816 opts.compatMake = true;
817 forceJobs = false;
818 }
819 #if USE_META
820 if (strstr(mode, "meta") != NULL)
821 meta_mode_init(mode);
822 #endif
823 if (strstr(mode, "randomize-targets") != NULL)
824 opts.randomizeTargets = true;
825 }
826
827 free(mode);
828 }
829
830 static void
PrintVar(const char * varname,bool expandVars)831 PrintVar(const char *varname, bool expandVars)
832 {
833 if (strchr(varname, '$') != NULL) {
834 char *evalue = Var_Subst(varname, SCOPE_GLOBAL, VARE_EVAL);
835 /* TODO: handle errors */
836 printf("%s\n", evalue);
837 free(evalue);
838
839 } else if (expandVars) {
840 char *expr = str_concat3("${", varname, "}");
841 char *evalue = Var_Subst(expr, SCOPE_GLOBAL, VARE_EVAL);
842 /* TODO: handle errors */
843 free(expr);
844 printf("%s\n", evalue);
845 free(evalue);
846
847 } else {
848 FStr value = Var_Value(SCOPE_GLOBAL, varname);
849 printf("%s\n", value.str != NULL ? value.str : "");
850 FStr_Done(&value);
851 }
852 }
853
854 /*
855 * Return a bool based on a variable.
856 *
857 * If the knob is not set, return the fallback.
858 * If set, anything that looks or smells like "No", "False", "Off", "0", etc.
859 * is false, otherwise true.
860 */
861 bool
GetBooleanExpr(const char * expr,bool fallback)862 GetBooleanExpr(const char *expr, bool fallback)
863 {
864 char *value;
865 bool res;
866
867 value = Var_Subst(expr, SCOPE_GLOBAL, VARE_EVAL);
868 /* TODO: handle errors */
869 res = ParseBoolean(value, fallback);
870 free(value);
871 return res;
872 }
873
874 static void
doPrintVars(void)875 doPrintVars(void)
876 {
877 StringListNode *ln;
878 bool expandVars;
879
880 if (opts.printVars == PVM_EXPANDED)
881 expandVars = true;
882 else if (opts.debugVflag)
883 expandVars = false;
884 else
885 expandVars = GetBooleanExpr("${.MAKE.EXPAND_VARIABLES}",
886 false);
887
888 for (ln = opts.variables.first; ln != NULL; ln = ln->next) {
889 const char *varname = ln->datum;
890 PrintVar(varname, expandVars);
891 }
892 }
893
894 static bool
runTargets(void)895 runTargets(void)
896 {
897 GNodeList targs = LST_INIT; /* target nodes to create */
898 bool outOfDate; /* false if all targets up to date */
899
900 /*
901 * Have now read the entire graph and need to make a list of
902 * targets to create. If none was given on the command line,
903 * we consult the parsing module to find the main target(s)
904 * to create.
905 */
906 if (Lst_IsEmpty(&opts.create))
907 Parse_MainName(&targs);
908 else
909 Targ_FindList(&targs, &opts.create);
910
911 if (!opts.compatMake) {
912 /*
913 * Initialize job module before traversing the graph
914 * now that any .BEGIN and .END targets have been read.
915 * This is done only if the -q flag wasn't given
916 * (to prevent the .BEGIN from being executed should
917 * it exist).
918 */
919 if (!opts.query) {
920 Job_Init();
921 jobsRunning = true;
922 }
923
924 /* Traverse the graph, checking on all the targets */
925 outOfDate = Make_Run(&targs);
926 } else {
927 Compat_MakeAll(&targs);
928 outOfDate = false;
929 }
930 Lst_Done(&targs); /* Don't free the targets themselves. */
931 return outOfDate;
932 }
933
934 /*
935 * Set up the .TARGETS variable to contain the list of targets to be created.
936 * If none specified, make the variable empty for now, the parser will fill
937 * in the default or .MAIN target later.
938 */
939 static void
InitVarTargets(void)940 InitVarTargets(void)
941 {
942 StringListNode *ln;
943
944 if (Lst_IsEmpty(&opts.create)) {
945 Global_Set(".TARGETS", "");
946 return;
947 }
948
949 for (ln = opts.create.first; ln != NULL; ln = ln->next) {
950 const char *name = ln->datum;
951 Global_Append(".TARGETS", name);
952 }
953 }
954
955 static void
InitRandom(void)956 InitRandom(void)
957 {
958 struct timeval tv;
959
960 gettimeofday(&tv, NULL);
961 srandom((unsigned int)(tv.tv_sec + tv.tv_usec));
962 }
963
964 static const char *
InitVarMachine(const struct utsname * utsname MAKE_ATTR_UNUSED)965 InitVarMachine(const struct utsname *utsname MAKE_ATTR_UNUSED)
966 {
967 #ifdef FORCE_MACHINE
968 return FORCE_MACHINE;
969 #else
970 const char *machine = getenv("MACHINE");
971
972 if (machine != NULL)
973 return machine;
974
975 #if defined(MAKE_NATIVE)
976 return utsname->machine;
977 #elif defined(MAKE_MACHINE)
978 return MAKE_MACHINE;
979 #else
980 return "unknown";
981 #endif
982 #endif
983 }
984
985 static const char *
InitVarMachineArch(void)986 InitVarMachineArch(void)
987 {
988 #ifdef FORCE_MACHINE_ARCH
989 return FORCE_MACHINE_ARCH;
990 #else
991 const char *env = getenv("MACHINE_ARCH");
992 if (env != NULL)
993 return env;
994
995 #if defined(MAKE_NATIVE) && defined(CTL_HW)
996 {
997 struct utsname utsname;
998 static char machine_arch_buf[sizeof utsname.machine];
999 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH };
1000 size_t len = sizeof machine_arch_buf;
1001
1002 if (sysctl(mib, (unsigned int)__arraycount(mib),
1003 machine_arch_buf, &len, NULL, 0) < 0) {
1004 (void)fprintf(stderr, "%s: sysctl failed (%s).\n",
1005 progname, strerror(errno));
1006 exit(2);
1007 }
1008
1009 return machine_arch_buf;
1010 }
1011 #elif defined(MACHINE_ARCH)
1012 return MACHINE_ARCH;
1013 #elif defined(MAKE_MACHINE_ARCH)
1014 return MAKE_MACHINE_ARCH;
1015 #else
1016 return "unknown";
1017 #endif
1018 #endif
1019 }
1020
1021 #ifndef NO_PWD_OVERRIDE
1022 /*
1023 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX
1024 * since the value of curdir can vary depending on how we got
1025 * here. That is, sitting at a shell prompt (shell that provides $PWD)
1026 * or via subdir.mk, in which case it's likely a shell which does
1027 * not provide it.
1028 *
1029 * So, to stop it breaking this case only, we ignore PWD if
1030 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains an expression.
1031 */
1032 static void
HandlePWD(const struct stat * curdir_st)1033 HandlePWD(const struct stat *curdir_st)
1034 {
1035 char *pwd;
1036 FStr makeobjdir;
1037 struct stat pwd_st;
1038
1039 if (ignorePWD || (pwd = getenv("PWD")) == NULL)
1040 return;
1041
1042 if (Var_Exists(SCOPE_CMDLINE, "MAKEOBJDIRPREFIX"))
1043 return;
1044
1045 makeobjdir = Var_Value(SCOPE_CMDLINE, "MAKEOBJDIR");
1046 if (makeobjdir.str != NULL && strchr(makeobjdir.str, '$') != NULL)
1047 goto ignore_pwd;
1048
1049 if (stat(pwd, &pwd_st) == 0 &&
1050 curdir_st->st_ino == pwd_st.st_ino &&
1051 curdir_st->st_dev == pwd_st.st_dev)
1052 snprintf(curdir, MAXPATHLEN, "%s", pwd);
1053
1054 ignore_pwd:
1055 FStr_Done(&makeobjdir);
1056 }
1057 #endif
1058
1059 /*
1060 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, MAKEOBJDIR is set
1061 * in the environment, try only that value and fall back to .CURDIR if it
1062 * does not exist.
1063 *
1064 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE,
1065 * and finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none of these
1066 * paths exist, just use .CURDIR.
1067 */
1068 static void
InitObjdir(const char * machine,const char * machine_arch)1069 InitObjdir(const char *machine, const char *machine_arch)
1070 {
1071 bool writable;
1072
1073 Dir_InitCur(curdir);
1074 writable = GetBooleanExpr("${MAKE_OBJDIR_CHECK_WRITABLE}", true);
1075 (void)Main_SetObjdir(false, "%s", curdir);
1076
1077 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) &&
1078 !SetVarObjdir(writable, "MAKEOBJDIR", "") &&
1079 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) &&
1080 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) &&
1081 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR))
1082 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir);
1083 }
1084
1085 /* get rid of resource limit on file descriptors */
1086 static void
UnlimitFiles(void)1087 UnlimitFiles(void)
1088 {
1089 #if defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)
1090 struct rlimit rl;
1091 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 &&
1092 rl.rlim_cur != rl.rlim_max) {
1093 #ifdef BMAKE_NOFILE_MAX
1094 if (BMAKE_NOFILE_MAX < rl.rlim_max)
1095 rl.rlim_cur = BMAKE_NOFILE_MAX;
1096 else
1097 #endif
1098 rl.rlim_cur = rl.rlim_max;
1099 (void)setrlimit(RLIMIT_NOFILE, &rl);
1100 }
1101 #endif
1102 }
1103
1104 static void
CmdOpts_Init(void)1105 CmdOpts_Init(void)
1106 {
1107 opts.compatMake = false;
1108 memset(&opts.debug, 0, sizeof(opts.debug));
1109 /* opts.debug_file has already been initialized earlier */
1110 opts.strict = false;
1111 opts.debugVflag = false;
1112 opts.checkEnvFirst = false;
1113 Lst_Init(&opts.makefiles);
1114 opts.ignoreErrors = false; /* Pay attention to non-zero returns */
1115 opts.maxJobs = 1;
1116 opts.keepgoing = false; /* Stop on error */
1117 opts.noRecursiveExecute = false; /* Execute all .MAKE targets */
1118 opts.noExecute = false; /* Execute all commands */
1119 opts.query = false;
1120 opts.noBuiltins = false; /* Read the built-in rules */
1121 opts.silent = false; /* Print commands as executed */
1122 opts.touch = false;
1123 opts.printVars = PVM_NONE;
1124 Lst_Init(&opts.variables);
1125 opts.parseWarnFatal = false;
1126 opts.enterFlag = false;
1127 opts.varNoExportEnv = false;
1128 Lst_Init(&opts.create);
1129 }
1130
1131 /*
1132 * Initialize MAKE and .MAKE to the path of the executable, so that it can be
1133 * found by execvp(3) and the shells, even after a chdir.
1134 *
1135 * If it's a relative path and contains a '/', resolve it to an absolute path.
1136 * Otherwise keep it as is, assuming it will be found in the PATH.
1137 */
1138 static void
InitVarMake(const char * argv0)1139 InitVarMake(const char *argv0)
1140 {
1141 const char *make = argv0;
1142 char pathbuf[MAXPATHLEN];
1143
1144 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) {
1145 const char *abspath = cached_realpath(argv0, pathbuf);
1146 struct stat st;
1147 if (abspath != NULL && abspath[0] == '/' &&
1148 stat(make, &st) == 0)
1149 make = abspath;
1150 }
1151
1152 Global_Set("MAKE", make);
1153 Global_Set(".MAKE", make);
1154 }
1155
1156 /*
1157 * Add the directories from the colon-separated syspath to defSysIncPath.
1158 * After returning, the contents of syspath is unspecified.
1159 */
1160 static void
InitDefSysIncPath(char * syspath)1161 InitDefSysIncPath(char *syspath)
1162 {
1163 static char defsyspath[] = _PATH_DEFSYSPATH;
1164 char *start, *p;
1165
1166 /*
1167 * If no user-supplied system path was given (through the -m option)
1168 * add the directories from the DEFSYSPATH (more than one may be given
1169 * as dir1:...:dirn) to the system include path.
1170 */
1171 if (syspath == NULL || syspath[0] == '\0')
1172 syspath = defsyspath;
1173 else
1174 syspath = bmake_strdup(syspath);
1175
1176 for (start = syspath; *start != '\0'; start = p) {
1177 for (p = start; *p != '\0' && *p != ':'; p++)
1178 continue;
1179 if (*p == ':')
1180 *p++ = '\0';
1181
1182 /* look for magic parent directory search string */
1183 if (strncmp(start, ".../", 4) == 0) {
1184 char *dir = Dir_FindHereOrAbove(curdir, start + 4);
1185 if (dir != NULL) {
1186 (void)SearchPath_Add(defSysIncPath, dir);
1187 free(dir);
1188 }
1189 } else {
1190 (void)SearchPath_Add(defSysIncPath, start);
1191 }
1192 }
1193
1194 if (syspath != defsyspath)
1195 free(syspath);
1196 }
1197
1198 static void
ReadBuiltinRules(void)1199 ReadBuiltinRules(void)
1200 {
1201 StringListNode *ln;
1202 StringList sysMkFiles = LST_INIT;
1203
1204 SearchPath_Expand(
1205 Lst_IsEmpty(&sysIncPath->dirs) ? defSysIncPath : sysIncPath,
1206 _PATH_DEFSYSMK,
1207 &sysMkFiles);
1208 if (Lst_IsEmpty(&sysMkFiles))
1209 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK);
1210
1211 for (ln = sysMkFiles.first; ln != NULL; ln = ln->next)
1212 if (ReadMakefile(ln->datum))
1213 break;
1214
1215 if (ln == NULL)
1216 Fatal("%s: cannot open %s.",
1217 progname, (const char *)sysMkFiles.first->datum);
1218
1219 Lst_DoneFree(&sysMkFiles);
1220 }
1221
1222 static void
InitMaxJobs(void)1223 InitMaxJobs(void)
1224 {
1225 char *value;
1226 int n;
1227
1228 if (forceJobs || opts.compatMake ||
1229 !Var_Exists(SCOPE_GLOBAL, ".MAKE.JOBS"))
1230 return;
1231
1232 value = Var_Subst("${.MAKE.JOBS}", SCOPE_GLOBAL, VARE_EVAL);
1233 /* TODO: handle errors */
1234 n = (int)strtol(value, NULL, 0);
1235 if (n < 1) {
1236 (void)fprintf(stderr,
1237 "%s: illegal value for .MAKE.JOBS "
1238 "-- must be positive integer!\n",
1239 progname);
1240 exit(2); /* Not 1 so -q can distinguish error */
1241 }
1242
1243 if (n != opts.maxJobs) {
1244 Global_Append(MAKEFLAGS, "-j");
1245 Global_Append(MAKEFLAGS, value);
1246 }
1247
1248 opts.maxJobs = n;
1249 maxJobTokens = opts.maxJobs;
1250 forceJobs = true;
1251 free(value);
1252 }
1253
1254 /*
1255 * For compatibility, look at the directories in the VPATH variable
1256 * and add them to the search path, if the variable is defined. The
1257 * variable's value is in the same format as the PATH environment
1258 * variable, i.e. <directory>:<directory>:<directory>...
1259 */
1260 static void
InitVpath(void)1261 InitVpath(void)
1262 {
1263 char *vpath, savec, *path;
1264 if (!Var_Exists(SCOPE_CMDLINE, "VPATH"))
1265 return;
1266
1267 vpath = Var_Subst("${VPATH}", SCOPE_CMDLINE, VARE_EVAL);
1268 /* TODO: handle errors */
1269 path = vpath;
1270 do {
1271 char *p;
1272 /* skip to end of directory */
1273 for (p = path; *p != ':' && *p != '\0'; p++)
1274 continue;
1275 /* Save terminator character so know when to stop */
1276 savec = *p;
1277 *p = '\0';
1278 /* Add directory to search path */
1279 (void)SearchPath_Add(&dirSearchPath, path);
1280 *p = savec;
1281 path = p + 1;
1282 } while (savec == ':');
1283 free(vpath);
1284 }
1285
1286 static void
ReadAllMakefiles(const StringList * makefiles)1287 ReadAllMakefiles(const StringList *makefiles)
1288 {
1289 StringListNode *ln;
1290
1291 for (ln = makefiles->first; ln != NULL; ln = ln->next) {
1292 const char *fname = ln->datum;
1293 if (!ReadMakefile(fname))
1294 Fatal("%s: cannot open %s.", progname, fname);
1295 }
1296 }
1297
1298 static void
ReadFirstDefaultMakefile(void)1299 ReadFirstDefaultMakefile(void)
1300 {
1301 StringList makefiles = LST_INIT;
1302 StringListNode *ln;
1303 char *prefs = Var_Subst("${.MAKE.MAKEFILE_PREFERENCE}",
1304 SCOPE_CMDLINE, VARE_EVAL);
1305 /* TODO: handle errors */
1306
1307 AppendWords(&makefiles, prefs);
1308
1309 for (ln = makefiles.first; ln != NULL; ln = ln->next)
1310 if (ReadMakefile(ln->datum))
1311 break;
1312
1313 Lst_Done(&makefiles);
1314 free(prefs);
1315 }
1316
1317 /*
1318 * Initialize variables such as MAKE, MACHINE, .MAKEFLAGS.
1319 * Initialize a few modules.
1320 * Parse the arguments from MAKEFLAGS and the command line.
1321 */
1322 static void
main_Init(int argc,char ** argv)1323 main_Init(int argc, char **argv)
1324 {
1325 struct stat sa;
1326 const char *machine;
1327 const char *machine_arch;
1328 char *syspath = getenv("MAKESYSPATH");
1329 struct utsname utsname;
1330
1331 /* default to writing debug to stderr */
1332 opts.debug_file = stderr;
1333
1334 Str_Intern_Init();
1335 HashTable_Init(&cached_realpaths);
1336
1337 #ifdef SIGINFO
1338 (void)bmake_signal(SIGINFO, siginfo);
1339 #endif
1340
1341 InitRandom();
1342
1343 progname = str_basename(argv[0]);
1344
1345 UnlimitFiles();
1346
1347 if (uname(&utsname) == -1) {
1348 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname,
1349 strerror(errno));
1350 exit(2);
1351 }
1352
1353 machine = InitVarMachine(&utsname);
1354 machine_arch = InitVarMachineArch();
1355
1356 myPid = getpid(); /* remember this for vFork() */
1357
1358 /* Just in case MAKEOBJDIR wants us to do something tricky. */
1359 Targ_Init();
1360 #ifdef FORCE_MAKE_OS
1361 Global_Set_ReadOnly(".MAKE.OS", FORCE_MAKE_OS);
1362 #else
1363 Global_Set_ReadOnly(".MAKE.OS", utsname.sysname);
1364 #endif
1365 Global_Set("MACHINE", machine);
1366 Global_Set("MACHINE_ARCH", machine_arch);
1367 #ifdef MAKE_VERSION
1368 Global_Set("MAKE_VERSION", MAKE_VERSION);
1369 #endif
1370 Global_Set_ReadOnly(".newline", "\n");
1371 #ifndef MAKEFILE_PREFERENCE_LIST
1372 /* This is the traditional preference for makefiles. */
1373 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile"
1374 #endif
1375 Global_Set(".MAKE.MAKEFILE_PREFERENCE", MAKEFILE_PREFERENCE_LIST);
1376 Global_Set(".MAKE.DEPENDFILE", ".depend");
1377 /* Tell makefiles like jobs.mk whether we support -jC */
1378 #ifdef _SC_NPROCESSORS_ONLN
1379 Global_Set_ReadOnly(".MAKE.JOBS.C", "yes");
1380 #else
1381 Global_Set_ReadOnly(".MAKE.JOBS.C", "no");
1382 #endif
1383
1384 CmdOpts_Init();
1385 allPrecious = false; /* Remove targets when interrupted */
1386 deleteOnError = false; /* Historical default behavior */
1387 jobsRunning = false;
1388
1389 maxJobTokens = opts.maxJobs;
1390 ignorePWD = false;
1391
1392 /*
1393 * Initialize the parsing, directory and variable modules to prepare
1394 * for the reading of inclusion paths and variable settings on the
1395 * command line
1396 */
1397
1398 /*
1399 * Initialize various variables.
1400 * MAKE also gets this name, for compatibility
1401 * .MAKEFLAGS gets set to the empty string just in case.
1402 * MFLAGS also gets initialized empty, for compatibility.
1403 */
1404 Parse_Init();
1405 InitVarMake(argv[0]);
1406 Global_Set(MAKEFLAGS, "");
1407 Global_Set(".MAKEOVERRIDES", "");
1408 Global_Set("MFLAGS", "");
1409 Global_Set(".ALLTARGETS", "");
1410 Global_Set_ReadOnly(".MAKE.LEVEL.ENV", MAKE_LEVEL_ENV);
1411
1412 /* Set some other useful variables. */
1413 {
1414 char buf[64];
1415 const char *ep = getenv(MAKE_LEVEL_ENV);
1416
1417 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0;
1418 if (makelevel < 0)
1419 makelevel = 0;
1420 snprintf(buf, sizeof buf, "%d", makelevel);
1421 Global_Set(".MAKE.LEVEL", buf);
1422 snprintf(buf, sizeof buf, "%u", myPid);
1423 Global_Set_ReadOnly(".MAKE.PID", buf);
1424 snprintf(buf, sizeof buf, "%u", getppid());
1425 Global_Set_ReadOnly(".MAKE.PPID", buf);
1426 snprintf(buf, sizeof buf, "%u", getuid());
1427 Global_Set_ReadOnly(".MAKE.UID", buf);
1428 snprintf(buf, sizeof buf, "%u", getgid());
1429 Global_Set_ReadOnly(".MAKE.GID", buf);
1430 }
1431 if (makelevel > 0) {
1432 char pn[1024];
1433 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel);
1434 progname = bmake_strdup(pn);
1435 }
1436
1437 #ifdef USE_META
1438 meta_init();
1439 #endif
1440 Dir_Init();
1441
1442 {
1443 char *makeflags = explode(getenv("MAKEFLAGS"));
1444 Main_ParseArgLine(makeflags);
1445 free(makeflags);
1446 }
1447
1448 if (getcwd(curdir, MAXPATHLEN) == NULL) {
1449 (void)fprintf(stderr, "%s: getcwd: %s.\n",
1450 progname, strerror(errno));
1451 exit(2);
1452 }
1453
1454 MainParseArgs(argc, argv);
1455
1456 if (opts.enterFlag)
1457 printf("%s: Entering directory `%s'\n", progname, curdir);
1458
1459 if (stat(curdir, &sa) == -1) {
1460 (void)fprintf(stderr, "%s: %s: %s.\n",
1461 progname, curdir, strerror(errno));
1462 exit(2);
1463 }
1464
1465 #ifndef NO_PWD_OVERRIDE
1466 HandlePWD(&sa);
1467 #endif
1468 Global_Set(".CURDIR", curdir);
1469
1470 InitObjdir(machine, machine_arch);
1471
1472 Arch_Init();
1473 Suff_Init();
1474 Trace_Init(tracefile);
1475
1476 defaultNode = NULL;
1477 (void)time(&now);
1478
1479 Trace_Log(MAKESTART, NULL);
1480
1481 InitVarTargets();
1482
1483 InitDefSysIncPath(syspath);
1484 }
1485
1486 /*
1487 * Read the system makefile followed by either makefile, Makefile or the
1488 * files given by the -f option. Exit on parse errors.
1489 */
1490 static void
main_ReadFiles(void)1491 main_ReadFiles(void)
1492 {
1493
1494 if (Lst_IsEmpty(&sysIncPath->dirs))
1495 SearchPath_AddAll(sysIncPath, defSysIncPath);
1496
1497 Dir_SetSYSPATH();
1498 if (!opts.noBuiltins)
1499 ReadBuiltinRules();
1500
1501 posix_state = PS_MAYBE_NEXT_LINE;
1502 if (!Lst_IsEmpty(&opts.makefiles))
1503 ReadAllMakefiles(&opts.makefiles);
1504 else
1505 ReadFirstDefaultMakefile();
1506 }
1507
1508 /* Compute the dependency graph. */
1509 static void
main_PrepareMaking(void)1510 main_PrepareMaking(void)
1511 {
1512 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */
1513 if (!opts.noBuiltins || opts.printVars == PVM_NONE) {
1514 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE}",
1515 SCOPE_CMDLINE, VARE_EVAL);
1516 if (makeDependfile[0] != '\0') {
1517 /* TODO: handle errors */
1518 doing_depend = true;
1519 (void)ReadMakefile(makeDependfile);
1520 doing_depend = false;
1521 }
1522 }
1523
1524 if (enterFlagObj)
1525 printf("%s: Entering directory `%s'\n", progname, objdir);
1526
1527 MakeMode();
1528
1529 {
1530 FStr makeflags = Var_Value(SCOPE_GLOBAL, MAKEFLAGS);
1531 Global_Append("MFLAGS", makeflags.str);
1532 FStr_Done(&makeflags);
1533 }
1534
1535 InitMaxJobs();
1536
1537 if (!opts.compatMake && !forceJobs)
1538 opts.compatMake = true;
1539
1540 if (!opts.compatMake)
1541 Job_ServerStart(maxJobTokens, jp_0, jp_1);
1542 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n",
1543 jp_0, jp_1, opts.maxJobs, maxJobTokens, opts.compatMake ? 1 : 0);
1544
1545 if (opts.printVars == PVM_NONE)
1546 Main_ExportMAKEFLAGS(true); /* initial export */
1547
1548 InitVpath();
1549
1550 /*
1551 * Now that all search paths have been read for suffixes et al, it's
1552 * time to add the default search path to their lists...
1553 */
1554 Suff_ExtendPaths();
1555
1556 /*
1557 * Propagate attributes through :: dependency lists.
1558 */
1559 Targ_Propagate();
1560
1561 /* print the initial graph, if the user requested it */
1562 if (DEBUG(GRAPH1))
1563 Targ_PrintGraph(1);
1564 }
1565
1566 /*
1567 * Make the targets.
1568 * If the -v or -V options are given, print variables instead.
1569 * Return whether any of the targets is out-of-date.
1570 */
1571 static bool
main_Run(void)1572 main_Run(void)
1573 {
1574 if (opts.printVars != PVM_NONE) {
1575 /* print the values of any variables requested by the user */
1576 doPrintVars();
1577 return false;
1578 } else {
1579 return runTargets();
1580 }
1581 }
1582
1583 /* Clean up after making the targets. */
1584 static void
main_CleanUp(void)1585 main_CleanUp(void)
1586 {
1587 #ifdef CLEANUP
1588 Lst_DoneFree(&opts.variables);
1589 Lst_DoneFree(&opts.makefiles);
1590 Lst_DoneFree(&opts.create);
1591 #endif
1592
1593 if (DEBUG(GRAPH2))
1594 Targ_PrintGraph(2);
1595
1596 Trace_Log(MAKEEND, NULL);
1597
1598 if (enterFlagObj)
1599 printf("%s: Leaving directory `%s'\n", progname, objdir);
1600 if (opts.enterFlag)
1601 printf("%s: Leaving directory `%s'\n", progname, curdir);
1602
1603 Var_Stats();
1604 Targ_Stats();
1605
1606 #ifdef USE_META
1607 meta_finish();
1608 #endif
1609 #ifdef CLEANUP
1610 Suff_End();
1611 Targ_End();
1612 Arch_End();
1613 Parse_End();
1614 Dir_End();
1615 Job_End();
1616 #endif
1617 Trace_End();
1618 #ifdef CLEANUP
1619 Str_Intern_End();
1620 #endif
1621 }
1622
1623 /* Determine the exit code. */
1624 static int
main_Exit(bool outOfDate)1625 main_Exit(bool outOfDate)
1626 {
1627 if ((opts.strict && main_errors > 0) || parseErrors > 0)
1628 return 2; /* Not 1 so -q can distinguish error */
1629 return outOfDate ? 1 : 0;
1630 }
1631
1632 int
main(int argc,char ** argv)1633 main(int argc, char **argv)
1634 {
1635 bool outOfDate;
1636
1637 main_Init(argc, argv);
1638 main_ReadFiles();
1639 main_PrepareMaking();
1640 outOfDate = main_Run();
1641 main_CleanUp();
1642 return main_Exit(outOfDate);
1643 }
1644
1645 /*
1646 * Open and parse the given makefile, with all its side effects.
1647 * Return false if the file could not be opened.
1648 */
1649 static bool
ReadMakefile(const char * fname)1650 ReadMakefile(const char *fname)
1651 {
1652 int fd;
1653 char *name, *path = NULL;
1654
1655 if (strcmp(fname, "-") == 0) {
1656 Parse_File("(stdin)", -1);
1657 Var_Set(SCOPE_INTERNAL, "MAKEFILE", "");
1658 } else {
1659 if (strncmp(fname, ".../", 4) == 0) {
1660 name = Dir_FindHereOrAbove(curdir, fname + 4);
1661 if (name != NULL) {
1662 /* Dir_FindHereOrAbove returns dirname */
1663 path = str_concat3(name, "/",
1664 str_basename(fname));
1665 free(name);
1666 fd = open(path, O_RDONLY);
1667 if (fd != -1) {
1668 fname = path;
1669 goto found;
1670 }
1671 }
1672 }
1673 /* if we've chdir'd, rebuild the path name */
1674 if (strcmp(curdir, objdir) != 0 && *fname != '/') {
1675 path = str_concat3(curdir, "/", fname);
1676 fd = open(path, O_RDONLY);
1677 if (fd != -1) {
1678 fname = path;
1679 goto found;
1680 }
1681 free(path);
1682
1683 /* If curdir failed, try objdir (ala .depend) */
1684 path = str_concat3(objdir, "/", fname);
1685 fd = open(path, O_RDONLY);
1686 if (fd != -1) {
1687 fname = path;
1688 goto found;
1689 }
1690 } else {
1691 fd = open(fname, O_RDONLY);
1692 if (fd != -1)
1693 goto found;
1694 }
1695 /* look in -I and system include directories. */
1696 name = Dir_FindFile(fname, parseIncPath);
1697 if (name == NULL) {
1698 SearchPath *sysInc = Lst_IsEmpty(&sysIncPath->dirs)
1699 ? defSysIncPath : sysIncPath;
1700 name = Dir_FindFile(fname, sysInc);
1701 }
1702 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) {
1703 free(name);
1704 free(path);
1705 return false;
1706 }
1707 fname = name;
1708 /*
1709 * set the MAKEFILE variable desired by System V fans -- the
1710 * placement of the setting here means it gets set to the last
1711 * makefile specified, as it is set by SysV make.
1712 */
1713 found:
1714 if (!doing_depend)
1715 Var_Set(SCOPE_INTERNAL, "MAKEFILE", fname);
1716 Parse_File(fname, fd);
1717 }
1718 free(path);
1719 return true;
1720 }
1721
1722 /* populate av for Cmd_Exec and Compat_RunCommand */
1723 int
Cmd_Argv(const char * cmd,size_t cmd_len,const char ** av,size_t avsz,char * cmd_file,size_t cmd_filesz,bool eflag,bool xflag)1724 Cmd_Argv(const char *cmd, size_t cmd_len, const char **av, size_t avsz,
1725 char *cmd_file, size_t cmd_filesz, bool eflag, bool xflag)
1726 {
1727 int ac = 0;
1728 int cmd_fd = -1;
1729
1730 if (shellPath == NULL)
1731 Shell_Init();
1732
1733 if (cmd_file != NULL) {
1734 if (cmd_len == 0)
1735 cmd_len = strlen(cmd);
1736
1737 if (cmd_len > MAKE_CMDLEN_LIMIT) {
1738 cmd_fd = mkTempFile(NULL, cmd_file, cmd_filesz);
1739 if (cmd_fd >= 0) {
1740 ssize_t n;
1741
1742 n = write(cmd_fd, cmd, cmd_len);
1743 close(cmd_fd);
1744 if (n < (ssize_t)cmd_len) {
1745 unlink(cmd_file);
1746 cmd_fd = -1;
1747 }
1748 }
1749 } else
1750 cmd_file[0] = '\0';
1751 }
1752
1753 if (avsz < 4 || (eflag && avsz < 5))
1754 return -1;
1755
1756 /* The following works for any of the builtin shell specs. */
1757 av[ac++] = shellPath;
1758 if (eflag)
1759 av[ac++] = shellErrFlag;
1760 if (cmd_fd >= 0) {
1761 if (xflag)
1762 av[ac++] = "-x";
1763 av[ac++] = cmd_file;
1764 } else {
1765 av[ac++] = xflag ? "-xc" : "-c";
1766 av[ac++] = cmd;
1767 }
1768 av[ac] = NULL;
1769 return ac;
1770 }
1771
1772 /*
1773 * Execute the command in cmd, and return its output (only stdout, not
1774 * stderr, possibly empty). In the output, replace newlines with spaces.
1775 */
1776 char *
Cmd_Exec(const char * cmd,char ** error)1777 Cmd_Exec(const char *cmd, char **error)
1778 {
1779 const char *args[4]; /* Arguments for invoking the shell */
1780 int pipefds[2];
1781 int cpid; /* Child PID */
1782 int pid; /* PID from wait() */
1783 WAIT_T status; /* command exit status */
1784 Buffer buf; /* buffer to store the result */
1785 ssize_t bytes_read;
1786 char *output;
1787 char *p;
1788 int saved_errno;
1789 char cmd_file[MAXPATHLEN];
1790
1791 DEBUG1(VAR, "Capturing the output of command \"%s\"\n", cmd);
1792
1793 if (Cmd_Argv(cmd, 0, args, 4, cmd_file, sizeof(cmd_file), false, false) < 0
1794 || pipe(pipefds) == -1) {
1795 *error = str_concat3(
1796 "Couldn't create pipe for \"", cmd, "\"");
1797 return bmake_strdup("");
1798 }
1799
1800 Var_ReexportVars(SCOPE_GLOBAL);
1801
1802 switch (cpid = FORK_FUNCTION()) {
1803 case 0:
1804 (void)close(pipefds[0]);
1805 (void)dup2(pipefds[1], STDOUT_FILENO);
1806 (void)close(pipefds[1]);
1807
1808 (void)execv(shellPath, UNCONST(args));
1809 _exit(1);
1810 /* NOTREACHED */
1811
1812 case -1:
1813 *error = str_concat3("Couldn't exec \"", cmd, "\"");
1814 return bmake_strdup("");
1815 }
1816
1817 (void)close(pipefds[1]); /* No need for the writing half */
1818
1819 saved_errno = 0;
1820 Buf_Init(&buf);
1821
1822 do {
1823 char result[BUFSIZ];
1824 bytes_read = read(pipefds[0], result, sizeof result);
1825 if (bytes_read > 0)
1826 Buf_AddBytes(&buf, result, (size_t)bytes_read);
1827 } while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR));
1828 if (bytes_read == -1)
1829 saved_errno = errno;
1830
1831 (void)close(pipefds[0]); /* Close the input side of the pipe. */
1832
1833 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0)
1834 JobReapChild(pid, status, false);
1835
1836 if (Buf_EndsWith(&buf, '\n'))
1837 buf.data[buf.len - 1] = '\0';
1838
1839 output = Buf_DoneData(&buf);
1840 for (p = output; *p != '\0'; p++)
1841 if (*p == '\n')
1842 *p = ' ';
1843
1844 if (WIFSIGNALED(status))
1845 *error = str_concat3("\"", cmd, "\" exited on a signal");
1846 else if (WEXITSTATUS(status) != 0) {
1847 Buffer errBuf;
1848 Buf_Init(&errBuf);
1849 Buf_AddStr(&errBuf, "Command \"");
1850 Buf_AddStr(&errBuf, cmd);
1851 Buf_AddStr(&errBuf, "\" exited with status ");
1852 Buf_AddInt(&errBuf, WEXITSTATUS(status));
1853 *error = Buf_DoneData(&errBuf);
1854 } else if (saved_errno != 0)
1855 *error = str_concat3(
1856 "Couldn't read shell's output for \"", cmd, "\"");
1857 else
1858 *error = NULL;
1859 if (cmd_file[0] != '\0')
1860 unlink(cmd_file);
1861 return output;
1862 }
1863
1864 /*
1865 * Print a printf-style error message.
1866 *
1867 * In default mode, this error message has no consequences, for compatibility
1868 * reasons, in particular it does not affect the exit status. Only in lint
1869 * mode (-dL) it does.
1870 */
1871 void
Error(const char * fmt,...)1872 Error(const char *fmt, ...)
1873 {
1874 va_list ap;
1875 FILE *f;
1876
1877 f = opts.debug_file;
1878 if (f == stdout)
1879 f = stderr;
1880 (void)fflush(stdout);
1881
1882 for (;;) {
1883 fprintf(f, "%s: ", progname);
1884 va_start(ap, fmt);
1885 (void)vfprintf(f, fmt, ap);
1886 va_end(ap);
1887 (void)fprintf(f, "\n");
1888 (void)fflush(f);
1889 if (f == stderr)
1890 break;
1891 f = stderr;
1892 }
1893 main_errors++;
1894 }
1895
1896 /*
1897 * Wait for any running jobs to finish, then produce an error message,
1898 * finally exit immediately.
1899 *
1900 * Exiting immediately differs from Parse_Error, which exits only after the
1901 * current top-level makefile has been parsed completely.
1902 */
1903 void
Fatal(const char * fmt,...)1904 Fatal(const char *fmt, ...)
1905 {
1906 va_list ap;
1907
1908 if (jobsRunning)
1909 Job_Wait();
1910
1911 (void)fflush(stdout);
1912 fprintf(stderr, "%s: ", progname);
1913 va_start(ap, fmt);
1914 (void)vfprintf(stderr, fmt, ap);
1915 va_end(ap);
1916 (void)fprintf(stderr, "\n");
1917 (void)fflush(stderr);
1918 PrintStackTrace(true);
1919
1920 PrintOnError(NULL, "\n");
1921
1922 if (DEBUG(GRAPH2) || DEBUG(GRAPH3))
1923 Targ_PrintGraph(2);
1924 Trace_Log(MAKEERROR, NULL);
1925 exit(2); /* Not 1 so -q can distinguish error */
1926 }
1927
1928 /*
1929 * Major exception once jobs are being created.
1930 * Kills all jobs, prints a message and exits.
1931 */
1932 void
Punt(const char * fmt,...)1933 Punt(const char *fmt, ...)
1934 {
1935 va_list ap;
1936
1937 (void)fflush(stdout);
1938 (void)fprintf(stderr, "%s: ", progname);
1939 va_start(ap, fmt);
1940 (void)vfprintf(stderr, fmt, ap);
1941 va_end(ap);
1942 (void)fprintf(stderr, "\n");
1943 (void)fflush(stderr);
1944
1945 PrintOnError(NULL, "\n");
1946
1947 DieHorribly();
1948 }
1949
1950 /* Exit without giving a message. */
1951 void
DieHorribly(void)1952 DieHorribly(void)
1953 {
1954 if (jobsRunning)
1955 Job_AbortAll();
1956 if (DEBUG(GRAPH2))
1957 Targ_PrintGraph(2);
1958 Trace_Log(MAKEERROR, NULL);
1959 exit(2); /* Not 1 so -q can distinguish error */
1960 }
1961
1962 int
unlink_file(const char * file)1963 unlink_file(const char *file)
1964 {
1965 struct stat st;
1966
1967 if (lstat(file, &st) == -1)
1968 return -1;
1969
1970 if (S_ISDIR(st.st_mode)) {
1971 /*
1972 * POSIX says for unlink: "The path argument shall not name
1973 * a directory unless [...]".
1974 */
1975 errno = EISDIR;
1976 return -1;
1977 }
1978 return unlink(file);
1979 }
1980
1981 static void
write_all(int fd,const void * data,size_t n)1982 write_all(int fd, const void *data, size_t n)
1983 {
1984 const char *mem = data;
1985
1986 while (n > 0) {
1987 ssize_t written = write(fd, mem, n);
1988 /* XXX: Should this EAGAIN be EINTR? */
1989 if (written == -1 && errno == EAGAIN)
1990 continue;
1991 if (written == -1)
1992 break;
1993 mem += written;
1994 n -= (size_t)written;
1995 }
1996 }
1997
1998 /* Print why exec failed, avoiding stdio. */
1999 void MAKE_ATTR_DEAD
execDie(const char * func,const char * arg)2000 execDie(const char *func, const char *arg)
2001 {
2002 char msg[1024];
2003 int len;
2004
2005 len = snprintf(msg, sizeof(msg), "%s: %s(%s) failed (%s)\n",
2006 progname, func, arg, strerror(errno));
2007 write_all(STDERR_FILENO, msg, (size_t)len);
2008 _exit(1);
2009 }
2010
2011 static void
purge_relative_cached_realpaths(void)2012 purge_relative_cached_realpaths(void)
2013 {
2014 HashIter hi;
2015 bool more;
2016
2017 HashIter_Init(&hi, &cached_realpaths);
2018 more = HashIter_Next(&hi);
2019 while (more) {
2020 HashEntry *he = hi.entry;
2021 more = HashIter_Next(&hi);
2022 if (he->key[0] != '/') {
2023 DEBUG1(DIR, "cached_realpath: purging %s\n", he->key);
2024 free(he->value);
2025 HashTable_DeleteEntry(&cached_realpaths, he);
2026 }
2027 }
2028 }
2029
2030 const char *
cached_realpath(const char * pathname,char * resolved)2031 cached_realpath(const char *pathname, char *resolved)
2032 {
2033 const char *rp;
2034
2035 if (pathname == NULL || pathname[0] == '\0')
2036 return NULL;
2037
2038 rp = HashTable_FindValue(&cached_realpaths, pathname);
2039 if (rp != NULL) {
2040 snprintf(resolved, MAXPATHLEN, "%s", rp);
2041 return resolved;
2042 }
2043
2044 rp = realpath(pathname, resolved);
2045 if (rp != NULL) {
2046 HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp));
2047 DEBUG2(DIR, "cached_realpath: %s -> %s\n", pathname, rp);
2048 return resolved;
2049 }
2050
2051 /* should we negative-cache? */
2052 return NULL;
2053 }
2054
2055 /*
2056 * Return true if we should die without noise.
2057 * For example our failing child was a sub-make or failure happened elsewhere.
2058 */
2059 bool
shouldDieQuietly(GNode * gn,int bf)2060 shouldDieQuietly(GNode *gn, int bf)
2061 {
2062 static int quietly = -1;
2063
2064 if (quietly < 0) {
2065 if (DEBUG(JOB) ||
2066 !GetBooleanExpr("${.MAKE.DIE_QUIETLY}", true))
2067 quietly = 0;
2068 else if (bf >= 0)
2069 quietly = bf;
2070 else
2071 quietly = (gn != NULL && (gn->type & OP_MAKE)) ? 1 : 0;
2072 }
2073 return quietly != 0;
2074 }
2075
2076 static void
SetErrorVars(GNode * gn)2077 SetErrorVars(GNode *gn)
2078 {
2079 StringListNode *ln;
2080 char sts[16];
2081
2082 /*
2083 * We can print this even if there is no .ERROR target.
2084 */
2085 snprintf(sts, sizeof(sts), "%d", gn->exit_status);
2086 Global_Set(".ERROR_EXIT", sts);
2087 Global_Set(".ERROR_TARGET", gn->name);
2088 Global_Delete(".ERROR_CMD");
2089
2090 for (ln = gn->commands.first; ln != NULL; ln = ln->next) {
2091 const char *cmd = ln->datum;
2092
2093 if (cmd == NULL)
2094 break;
2095 Global_Append(".ERROR_CMD", cmd);
2096 }
2097 }
2098
2099 /*
2100 * Print some helpful information in case of an error.
2101 * The caller should exit soon after calling this function.
2102 */
2103 void
PrintOnError(GNode * gn,const char * msg)2104 PrintOnError(GNode *gn, const char *msg)
2105 {
2106 static GNode *errorNode = NULL;
2107 StringListNode *ln;
2108
2109 if (DEBUG(HASH)) {
2110 Targ_Stats();
2111 Var_Stats();
2112 }
2113
2114 if (errorNode != NULL)
2115 return; /* we've been here! */
2116
2117 printf("%s%s: stopped", msg, progname);
2118 ln = opts.create.first;
2119 if (ln != NULL || mainNode != NULL) {
2120 printf(" making \"");
2121 if (ln != NULL) {
2122 printf("%s", (const char *)ln->datum);
2123 for (ln = ln->next; ln != NULL; ln = ln->next)
2124 printf(" %s", (const char *)ln->datum);
2125 } else
2126 printf("%s", mainNode->name);
2127 printf("\"");
2128 }
2129 printf(" in %s\n", curdir);
2130
2131 /* we generally want to keep quiet if a sub-make died */
2132 if (shouldDieQuietly(gn, -1))
2133 return;
2134
2135 if (gn != NULL)
2136 SetErrorVars(gn);
2137
2138 {
2139 char *errorVarsValues;
2140 enum PosixState p_s = posix_state;
2141
2142 posix_state = PS_TOO_LATE;
2143 errorVarsValues = Var_Subst(
2144 "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}",
2145 SCOPE_GLOBAL, VARE_EVAL);
2146 /* TODO: handle errors */
2147 printf("%s", errorVarsValues);
2148 free(errorVarsValues);
2149 posix_state = p_s;
2150 }
2151
2152 fflush(stdout);
2153
2154 /*
2155 * Finally, see if there is a .ERROR target, and run it if so.
2156 */
2157 errorNode = Targ_FindNode(".ERROR");
2158 if (errorNode != NULL) {
2159 errorNode->type |= OP_SPECIAL;
2160 Compat_Make(errorNode, errorNode);
2161 }
2162 }
2163
2164 void
Main_ExportMAKEFLAGS(bool first)2165 Main_ExportMAKEFLAGS(bool first)
2166 {
2167 static bool once = true;
2168 enum PosixState p_s;
2169 char *flags;
2170
2171 if (once != first)
2172 return;
2173 once = false;
2174
2175 p_s = posix_state;
2176 posix_state = PS_TOO_LATE;
2177 flags = Var_Subst(
2178 "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}",
2179 SCOPE_CMDLINE, VARE_EVAL);
2180 /* TODO: handle errors */
2181 if (flags[0] != '\0')
2182 setenv("MAKEFLAGS", flags, 1);
2183 free(flags);
2184 posix_state = p_s;
2185 }
2186
2187 char *
getTmpdir(void)2188 getTmpdir(void)
2189 {
2190 static char *tmpdir = NULL;
2191 struct stat st;
2192
2193 if (tmpdir != NULL)
2194 return tmpdir;
2195
2196 /* Honor $TMPDIR if it is valid, strip a trailing '/'. */
2197 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP ":S,/$,,W}/",
2198 SCOPE_GLOBAL, VARE_EVAL);
2199 /* TODO: handle errors */
2200
2201 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) {
2202 free(tmpdir);
2203 tmpdir = bmake_strdup(_PATH_TMP);
2204 }
2205 return tmpdir;
2206 }
2207
2208 /*
2209 * Create and open a temp file using "pattern".
2210 * If tfile is provided, set it to a copy of the filename created.
2211 * Otherwise unlink the file once open.
2212 */
2213 int
mkTempFile(const char * pattern,char * tfile,size_t tfile_sz)2214 mkTempFile(const char *pattern, char *tfile, size_t tfile_sz)
2215 {
2216 static char *tmpdir = NULL;
2217 char tbuf[MAXPATHLEN];
2218 int fd;
2219
2220 if (pattern == NULL)
2221 pattern = TMPPAT;
2222 if (tmpdir == NULL)
2223 tmpdir = getTmpdir();
2224 if (tfile == NULL) {
2225 tfile = tbuf;
2226 tfile_sz = sizeof tbuf;
2227 }
2228
2229 if (pattern[0] == '/')
2230 snprintf(tfile, tfile_sz, "%s", pattern);
2231 else
2232 snprintf(tfile, tfile_sz, "%s%s", tmpdir, pattern);
2233
2234 if ((fd = mkstemp(tfile)) < 0)
2235 Punt("Could not create temporary file %s: %s", tfile,
2236 strerror(errno));
2237 if (tfile == tbuf)
2238 unlink(tfile); /* we just want the descriptor */
2239
2240 return fd;
2241 }
2242
2243 /*
2244 * Convert a string representation of a boolean into a boolean value.
2245 * Anything that looks like "No", "False", "Off", "0" etc. is false,
2246 * the empty string is the fallback, everything else is true.
2247 */
2248 bool
ParseBoolean(const char * s,bool fallback)2249 ParseBoolean(const char *s, bool fallback)
2250 {
2251 char ch = ch_tolower(s[0]);
2252 if (ch == '\0')
2253 return fallback;
2254 if (ch == '0' || ch == 'f' || ch == 'n')
2255 return false;
2256 if (ch == 'o')
2257 return ch_tolower(s[1]) != 'f';
2258 return true;
2259 }
2260