1 /* $NetBSD: main.c,v 1.669 2026/04/06 17:13:54 rillig 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 #ifdef USE_META
108 # include "meta.h"
109 #endif
110 #include "pathnames.h"
111 #include "trace.h"
112
113 /* "@(#)main.c 8.3 (Berkeley) 3/19/94" */
114 MAKE_RCSID("$NetBSD: main.c,v 1.669 2026/04/06 17:13:54 rillig Exp $");
115 #if defined(MAKE_NATIVE)
116 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993 "
117 "The Regents of the University of California. "
118 "All rights reserved.");
119 #endif
120
121 #ifndef __arraycount
122 # define __arraycount(__x) (sizeof(__x) / sizeof(__x[0]))
123 #endif
124
125 CmdOpts opts;
126 time_t now; /* Time at start of make */
127 GNode *defaultNode; /* .DEFAULT node */
128 bool allPrecious; /* .PRECIOUS given on a line by itself */
129 bool deleteOnError; /* .DELETE_ON_ERROR: set */
130
131 static int maxJobTokens; /* -j argument */
132 static bool enterFlagObj; /* -w and objdir != srcdir */
133 static bool bogusJflag; /* -J invalid */
134
135 static int tokenPoolReader = -1, tokenPoolWriter = -1;
136 bool doing_depend; /* Set while reading .depend */
137 static bool jobsRunning; /* true if the jobs might be running */
138 static const char *tracefile;
139 static bool ReadMakefile(const char *);
140 static void purge_relative_cached_realpaths(void);
141
142 static bool ignorePWD; /* if we use -C, PWD is meaningless */
143 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */
144 char curdir[MAXPATHLEN + 1]; /* Startup directory */
145 const char *progname;
146 char *makeDependfile;
147 pid_t myPid;
148 int makelevel;
149
150 bool forceJobs = false;
151 static int main_errors = 0;
152 static HashTable cached_realpaths;
153
154 /*
155 * For compatibility with the POSIX version of MAKEFLAGS that includes
156 * all the options without '-', convert 'flags' to '-f -l -a -g -s '.
157 */
158 static char *
explode(const char * flags)159 explode(const char *flags)
160 {
161 char *exploded, *ep;
162 const char *p;
163
164 if (flags == NULL)
165 return NULL;
166
167 for (p = flags; *p != '\0'; p++)
168 if (!ch_isalpha(*p))
169 return bmake_strdup(flags);
170
171 exploded = bmake_malloc((size_t)(p - flags) * 3 + 1);
172 for (p = flags, ep = exploded; *p != '\0'; p++) {
173 *ep++ = '-';
174 *ep++ = *p;
175 *ep++ = ' ';
176 }
177 *ep = '\0';
178 return exploded;
179 }
180
181 MAKE_ATTR_DEAD static void
usage(void)182 usage(void)
183 {
184 size_t prognameLen = strcspn(progname, "[");
185
186 (void)fprintf(stderr,
187 "usage: %.*s [-BeikNnqrSstWwX]\n"
188 " [-C directory] [-D variable] [-d flags] [-f makefile]\n"
189 " [-I directory] [-J private] [-j max_jobs] [-m directory]\n"
190 " [-T file] [-V variable] [-v variable]\n"
191 " [variable=value ...] [target ...]\n",
192 (int)prognameLen, progname);
193 exit(2);
194 }
195
196 static void
MainParseArgDebugFile(const char * arg)197 MainParseArgDebugFile(const char *arg)
198 {
199 const char *mode;
200 size_t len;
201 char *fname;
202
203 if (opts.debug_file != stdout && opts.debug_file != stderr)
204 fclose(opts.debug_file);
205
206 if (*arg == '+') {
207 arg++;
208 mode = "a";
209 } else
210 mode = "w";
211
212 if (strcmp(arg, "stdout") == 0) {
213 opts.debug_file = stdout;
214 return;
215 }
216 if (strcmp(arg, "stderr") == 0) {
217 opts.debug_file = stderr;
218 return;
219 }
220
221 len = strlen(arg);
222 fname = bmake_malloc(len + 20);
223 memcpy(fname, arg, len + 1);
224
225 /* Replace the trailing '%d' after '.%d' with the pid. */
226 if (len >= 3 && memcmp(fname + len - 3, ".%d", 3) == 0)
227 snprintf(fname + len - 2, 20, "%d", getpid());
228
229 opts.debug_file = fopen(fname, mode);
230 if (opts.debug_file == NULL) {
231 fprintf(stderr, "Cannot open debug file \"%s\"\n", fname);
232 exit(2);
233 }
234 free(fname);
235 }
236
237 static void
MainParseArgDebug(const char * argvalue)238 MainParseArgDebug(const char *argvalue)
239 {
240 const char *modules;
241 DebugFlags debug = opts.debug;
242
243 for (modules = argvalue; *modules != '\0'; modules++) {
244 switch (*modules) {
245 case '0': /* undocumented, only intended for tests */
246 memset(&debug, 0, sizeof(debug));
247 break;
248 case 'A':
249 memset(&debug, ~0, sizeof(debug));
250 break;
251 case 'a':
252 debug.DEBUG_ARCH = true;
253 break;
254 case 'C':
255 debug.DEBUG_CWD = true;
256 break;
257 case 'c':
258 debug.DEBUG_COND = true;
259 break;
260 case 'd':
261 debug.DEBUG_DIR = true;
262 break;
263 case 'e':
264 debug.DEBUG_ERROR = true;
265 break;
266 case 'f':
267 debug.DEBUG_FOR = true;
268 break;
269 case 'g':
270 if (modules[1] == '1') {
271 debug.DEBUG_GRAPH1 = true;
272 modules++;
273 } else if (modules[1] == '2') {
274 debug.DEBUG_GRAPH2 = true;
275 modules++;
276 } else if (modules[1] == '3') {
277 debug.DEBUG_GRAPH3 = true;
278 modules++;
279 }
280 break;
281 case 'h':
282 debug.DEBUG_HASH = true;
283 break;
284 case 'j':
285 debug.DEBUG_JOB = true;
286 break;
287 case 'L':
288 opts.strict = true;
289 break;
290 case 'l':
291 debug.DEBUG_LOUD = true;
292 break;
293 case 'M':
294 debug.DEBUG_META = true;
295 break;
296 case 'm':
297 debug.DEBUG_MAKE = true;
298 break;
299 case 'n':
300 debug.DEBUG_SCRIPT = true;
301 break;
302 case 'p':
303 debug.DEBUG_PARSE = true;
304 break;
305 case 's':
306 debug.DEBUG_SUFF = true;
307 break;
308 case 't':
309 debug.DEBUG_TARG = true;
310 break;
311 case 'V':
312 opts.debugVflag = true;
313 break;
314 case 'v':
315 debug.DEBUG_VAR = true;
316 break;
317 case 'x':
318 debug.DEBUG_SHELL = true;
319 break;
320 case 'F':
321 MainParseArgDebugFile(modules + 1);
322 goto finish;
323 default:
324 (void)fprintf(stderr,
325 "%s: illegal argument to d option -- %c\n",
326 progname, *modules);
327 usage();
328 }
329 }
330
331 finish:
332 opts.debug = debug;
333
334 setvbuf(opts.debug_file, NULL, _IONBF, 0);
335 if (opts.debug_file != stdout)
336 setvbuf(stdout, NULL, _IOLBF, 0);
337 }
338
339 /* Is path relative or does it contain any relative component "." or ".."? */
340 static bool
IsRelativePath(const char * path)341 IsRelativePath(const char *path)
342 {
343 const char *p;
344
345 if (path[0] != '/')
346 return true;
347 p = path;
348 while ((p = strstr(p, "/.")) != NULL) {
349 p += 2;
350 if (*p == '.')
351 p++;
352 if (*p == '/' || *p == '\0')
353 return true;
354 }
355 return false;
356 }
357
358 static void
MainParseArgChdir(const char * argvalue)359 MainParseArgChdir(const char *argvalue)
360 {
361 struct stat sa, sb;
362
363 if (chdir(argvalue) == -1) {
364 (void)fprintf(stderr, "%s: chdir %s: %s\n",
365 progname, argvalue, strerror(errno));
366 exit(2); /* Not 1 so -q can distinguish error */
367 }
368 if (getcwd(curdir, MAXPATHLEN) == NULL) {
369 (void)fprintf(stderr, "%s: getcwd: %s\n",
370 progname, strerror(errno));
371 exit(2);
372 }
373 if (!IsRelativePath(argvalue) &&
374 stat(argvalue, &sa) != -1 &&
375 stat(curdir, &sb) != -1 &&
376 sa.st_ino == sb.st_ino &&
377 sa.st_dev == sb.st_dev)
378 snprintf(curdir, MAXPATHLEN, "%s", argvalue);
379 ignorePWD = true;
380 }
381
382 static void
MainParseArgJobsInternal(const char * argvalue)383 MainParseArgJobsInternal(const char *argvalue)
384 {
385 char end;
386 if (sscanf(argvalue, "%d,%d%c",
387 &tokenPoolReader, &tokenPoolWriter, &end) != 2) {
388 (void)fprintf(stderr,
389 "%s: error: invalid internal option "
390 "\"-J %s\" in \"%s\"\n",
391 progname, argvalue, curdir);
392 exit(2);
393 }
394 if (fcntl(tokenPoolReader, F_GETFD, 0) < 0 ||
395 fcntl(tokenPoolWriter, F_GETFD, 0) < 0) {
396 tokenPoolReader = -1;
397 tokenPoolWriter = -1;
398 bogusJflag = true;
399 } else {
400 Global_Append(MAKEFLAGS, "-J");
401 Global_Append(MAKEFLAGS, argvalue);
402 }
403 }
404
405 static void
MainParseArgJobs(const char * arg)406 MainParseArgJobs(const char *arg)
407 {
408 const char *p;
409 char *end;
410 char v[12];
411
412 forceJobs = true;
413 opts.maxJobs = (int)strtol(arg, &end, 0);
414 p = end;
415 #ifdef _SC_NPROCESSORS_ONLN
416 if (*p != '\0') {
417 double d;
418
419 if (*p == 'C')
420 d = opts.maxJobs > 0 ? opts.maxJobs : 1;
421 else if (*p == '.') {
422 d = strtod(arg, &end);
423 p = end;
424 } else
425 d = 0.0;
426 if (d > 0.0) {
427 p = "";
428 opts.maxJobs = (int)sysconf(_SC_NPROCESSORS_ONLN);
429 opts.maxJobs = (int)(d * (double)opts.maxJobs);
430 }
431 }
432 #endif
433 if (*p != '\0' || opts.maxJobs < 1) {
434 (void)fprintf(stderr,
435 "%s: argument '%s' to option '-j' "
436 "must be a positive number\n",
437 progname, arg);
438 exit(2); /* Not 1 so -q can distinguish error */
439 }
440 snprintf(v, sizeof(v), "%d", opts.maxJobs);
441 Global_Append(MAKEFLAGS, "-j");
442 Global_Append(MAKEFLAGS, v);
443 Global_Set(".MAKE.JOBS", v);
444 maxJobTokens = opts.maxJobs;
445 }
446
447 static void
MainParseArgSysInc(const char * argvalue)448 MainParseArgSysInc(const char *argvalue)
449 {
450 if (strncmp(argvalue, ".../", 4) == 0) {
451 char *found_path = Dir_FindHereOrAbove(curdir, argvalue + 4);
452 if (found_path == NULL)
453 return;
454 (void)SearchPath_Add(sysIncPath, found_path);
455 free(found_path);
456 } else {
457 (void)SearchPath_Add(sysIncPath, argvalue);
458 }
459 Global_Append(MAKEFLAGS, "-m");
460 Global_Append(MAKEFLAGS, argvalue);
461 Dir_SetSYSPATH();
462 }
463
464 static bool
MainParseOption(char c,const char * argvalue)465 MainParseOption(char c, const char *argvalue)
466 {
467 switch (c) {
468 case 'B':
469 opts.compatMake = true;
470 Global_Append(MAKEFLAGS, "-B");
471 Global_Set(".MAKE.MODE", "compat");
472 break;
473 case 'C':
474 MainParseArgChdir(argvalue);
475 break;
476 case 'D':
477 if (argvalue[0] == '\0')
478 return false;
479 Var_SetExpand(SCOPE_GLOBAL, argvalue, "1");
480 Global_Append(MAKEFLAGS, "-D");
481 Global_Append(MAKEFLAGS, argvalue);
482 break;
483 case 'I':
484 SearchPath_Add(parseIncPath, argvalue);
485 Global_Append(MAKEFLAGS, "-I");
486 Global_Append(MAKEFLAGS, argvalue);
487 break;
488 case 'J':
489 MainParseArgJobsInternal(argvalue);
490 break;
491 case 'N':
492 opts.noExecute = true;
493 opts.noRecursiveExecute = true;
494 Global_Append(MAKEFLAGS, "-N");
495 break;
496 case 'S':
497 opts.keepgoing = false;
498 Global_Append(MAKEFLAGS, "-S");
499 break;
500 case 'T':
501 tracefile = bmake_strdup(argvalue);
502 Global_Append(MAKEFLAGS, "-T");
503 Global_Append(MAKEFLAGS, argvalue);
504 break;
505 case 'V':
506 case 'v':
507 opts.printVars = c == 'v' ? PVM_EXPANDED : PVM_UNEXPANDED;
508 Lst_Append(&opts.variables, bmake_strdup(argvalue));
509 /* XXX: Why always -V? */
510 Global_Append(MAKEFLAGS, "-V");
511 Global_Append(MAKEFLAGS, argvalue);
512 break;
513 case 'W':
514 opts.parseWarnFatal = true;
515 /* XXX: why no Global_Append? */
516 break;
517 case 'X':
518 opts.varNoExportEnv = true;
519 Global_Append(MAKEFLAGS, "-X");
520 break;
521 case 'd':
522 /* If '-d-opts' don't pass to children */
523 if (argvalue[0] == '-')
524 argvalue++;
525 else {
526 Global_Append(MAKEFLAGS, "-d");
527 Global_Append(MAKEFLAGS, argvalue);
528 }
529 MainParseArgDebug(argvalue);
530 break;
531 case 'e':
532 opts.checkEnvFirst = true;
533 Global_Append(MAKEFLAGS, "-e");
534 break;
535 case 'f':
536 Lst_Append(&opts.makefiles, bmake_strdup(argvalue));
537 break;
538 case 'i':
539 opts.ignoreErrors = true;
540 Global_Append(MAKEFLAGS, "-i");
541 break;
542 case 'j':
543 MainParseArgJobs(argvalue);
544 break;
545 case 'k':
546 opts.keepgoing = true;
547 Global_Append(MAKEFLAGS, "-k");
548 break;
549 case 'm':
550 MainParseArgSysInc(argvalue);
551 /* XXX: why no Var_Append? */
552 break;
553 case 'n':
554 opts.noExecute = true;
555 Global_Append(MAKEFLAGS, "-n");
556 break;
557 case 'q':
558 opts.query = true;
559 /* Kind of nonsensical, wot? */
560 Global_Append(MAKEFLAGS, "-q");
561 break;
562 case 'r':
563 opts.noBuiltins = true;
564 Global_Append(MAKEFLAGS, "-r");
565 break;
566 case 's':
567 opts.silent = true;
568 Global_Append(MAKEFLAGS, "-s");
569 break;
570 case 't':
571 opts.touch = true;
572 Global_Append(MAKEFLAGS, "-t");
573 break;
574 case 'w':
575 opts.enterFlag = true;
576 Global_Append(MAKEFLAGS, "-w");
577 break;
578 default:
579 usage();
580 }
581 return true;
582 }
583
584 /*
585 * Parse the given arguments. Called from main() and from
586 * Main_ParseArgLine() when the .MAKEFLAGS target is used.
587 *
588 * The arguments must be treated as read-only and will be freed after the
589 * call.
590 *
591 * XXX: Deal with command line overriding .MAKEFLAGS in makefile
592 */
593 static void
MainParseArgs(int argc,char ** argv)594 MainParseArgs(int argc, char **argv)
595 {
596 char c;
597 int arginc;
598 char *argvalue;
599 char *optscan;
600 bool inOption, dashDash = false;
601
602 const char *optspecs = "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstv:w";
603 /* Can't actually use getopt(3) because rescanning is not portable */
604
605 rearg:
606 inOption = false;
607 optscan = NULL;
608 while (argc > 1) {
609 const char *optspec;
610 if (!inOption)
611 optscan = argv[1];
612 c = *optscan++;
613 arginc = 0;
614 if (inOption) {
615 if (c == '\0') {
616 argv++;
617 argc--;
618 inOption = false;
619 continue;
620 }
621 } else {
622 if (c != '-' || dashDash)
623 break;
624 inOption = true;
625 c = *optscan++;
626 }
627 /* '-' found at some earlier point */
628 optspec = strchr(optspecs, c);
629 if (c != '\0' && optspec != NULL && optspec[1] == ':') {
630 /*
631 * -<something> found, and <something> should have an
632 * argument
633 */
634 inOption = false;
635 arginc = 1;
636 argvalue = optscan;
637 if (*argvalue == '\0') {
638 if (argc < 3)
639 goto noarg;
640 argvalue = argv[2];
641 arginc = 2;
642 }
643 } else {
644 argvalue = NULL;
645 }
646 switch (c) {
647 case '\0':
648 arginc = 1;
649 inOption = false;
650 break;
651 case '-':
652 dashDash = true;
653 break;
654 default:
655 if (!MainParseOption(c, argvalue))
656 goto noarg;
657 }
658 argv += arginc;
659 argc -= arginc;
660 }
661
662 /*
663 * See if the rest of the arguments are variable assignments and
664 * perform them if so. Else take them to be targets and stuff them
665 * on the end of the "create" list.
666 */
667 for (; argc > 1; argv++, argc--) {
668 if (!Parse_VarAssign(argv[1], false, SCOPE_CMDLINE)) {
669 if (argv[1][0] == '\0')
670 Punt("illegal (null) argument.");
671 if (argv[1][0] == '-' && !dashDash)
672 goto rearg;
673 Lst_Append(&opts.create, bmake_strdup(argv[1]));
674 }
675 }
676
677 return;
678 noarg:
679 (void)fprintf(stderr, "%s: option requires an argument -- %c\n",
680 progname, c);
681 usage();
682 }
683
684 /*
685 * Break a line of arguments into words and parse them.
686 *
687 * Used when a .MFLAGS or .MAKEFLAGS target is encountered during parsing and
688 * by main() when reading the MAKEFLAGS environment variable.
689 */
690 void
Main_ParseArgLine(const char * line)691 Main_ParseArgLine(const char *line)
692 {
693 Words words;
694 char *buf;
695 const char *p;
696
697 if (line == NULL)
698 return;
699 for (p = line; *p == ' '; p++)
700 continue;
701 if (p[0] == '\0')
702 return;
703
704 {
705 FStr argv0 = Var_Value(SCOPE_GLOBAL, ".MAKE");
706 buf = str_concat3(argv0.str, " ", p);
707 FStr_Done(&argv0);
708 }
709
710 words = Str_Words(buf, true);
711 if (words.words == NULL) {
712 Error("Unterminated quoted string [%s]", buf);
713 free(buf);
714 return;
715 }
716 free(buf);
717 EvalStack_PushMakeflags(line);
718 MainParseArgs((int)words.len, words.words);
719 EvalStack_Pop();
720
721 Words_Free(words);
722 }
723
724 bool
Main_SetObjdir(bool writable,const char * fmt,...)725 Main_SetObjdir(bool writable, const char *fmt, ...)
726 {
727 struct stat sb;
728 char *path;
729 char buf[MAXPATHLEN + 1];
730 char buf2[MAXPATHLEN + 1];
731 va_list ap;
732
733 va_start(ap, fmt);
734 vsnprintf(path = buf, MAXPATHLEN, fmt, ap);
735 va_end(ap);
736
737 if (path[0] != '/') {
738 if (snprintf(buf2, MAXPATHLEN, "%s/%s", curdir, path) <= MAXPATHLEN)
739 path = buf2;
740 else
741 return false;
742 }
743
744 /* look for the directory and try to chdir there */
745 if (stat(path, &sb) != 0 || !S_ISDIR(sb.st_mode))
746 return false;
747
748 if ((writable && access(path, W_OK) != 0) || chdir(path) != 0) {
749 (void)fprintf(stderr, "%s: warning: %s: %s\n",
750 progname, path, strerror(errno));
751 /* Allow debugging how we got here - not always obvious */
752 if (GetBooleanExpr("${MAKE_DEBUG_OBJDIR_CHECK_WRITABLE}",
753 false))
754 PrintOnError(NULL, "");
755 return false;
756 }
757
758 snprintf(objdir, sizeof objdir, "%s", path);
759 Global_Set(".OBJDIR", objdir);
760 setenv("PWD", objdir, 1);
761 Dir_InitDot();
762 purge_relative_cached_realpaths();
763 if (opts.enterFlag && strcmp(objdir, curdir) != 0)
764 enterFlagObj = true;
765 return true;
766 }
767
768 static bool
SetVarObjdir(bool writable,const char * var,const char * suffix)769 SetVarObjdir(bool writable, const char *var, const char *suffix)
770 {
771 FStr path = Var_Value(SCOPE_CMDLINE, var);
772
773 if (path.str == NULL || path.str[0] == '\0') {
774 FStr_Done(&path);
775 return false;
776 }
777
778 Var_Expand(&path, SCOPE_GLOBAL, VARE_EVAL);
779
780 (void)Main_SetObjdir(writable, "%s%s", path.str, suffix);
781
782 FStr_Done(&path);
783 return true;
784 }
785
786 /*
787 * Splits str into words (in-place, modifying it), adding them to the list.
788 * The string must be kept alive as long as the list.
789 */
790 void
AppendWords(StringList * lp,char * str)791 AppendWords(StringList *lp, char *str)
792 {
793 char *p;
794 const char *sep = " \t";
795
796 for (p = strtok(str, sep); p != NULL; p = strtok(NULL, sep))
797 Lst_Append(lp, p);
798 }
799
800 #ifdef SIGINFO
801 static void
siginfo(int signo MAKE_ATTR_UNUSED)802 siginfo(int signo MAKE_ATTR_UNUSED)
803 {
804 char dir[MAXPATHLEN];
805 char str[2 * MAXPATHLEN];
806 int len;
807 if (getcwd(dir, sizeof dir) == NULL)
808 return;
809 len = snprintf(str, sizeof str, "%s: Working in: %s\n", progname, dir);
810 if (len > 0)
811 (void)write(STDERR_FILENO, str, (size_t)len);
812 }
813 #endif
814
815 /* Allow makefiles some control over the mode we run in. */
816 static void
MakeMode(void)817 MakeMode(void)
818 {
819 char *mode = Var_Subst("${.MAKE.MODE:tl}", SCOPE_GLOBAL, VARE_EVAL);
820 /* TODO: handle errors */
821
822 if (mode[0] != '\0') {
823 if (strstr(mode, "compat") != NULL) {
824 opts.compatMake = true;
825 forceJobs = false;
826 }
827 #if USE_META
828 if (strstr(mode, "meta") != NULL)
829 meta_mode_init(mode);
830 #endif
831 if (strstr(mode, "randomize-targets") != NULL)
832 opts.randomizeTargets = true;
833 }
834
835 free(mode);
836 }
837
838 static void
PrintVariable(const char * varname,bool expandVars)839 PrintVariable(const char *varname, bool expandVars)
840 {
841 if (strchr(varname, '$') != NULL) {
842 char *evalue = Var_Subst(varname, SCOPE_GLOBAL, VARE_EVAL);
843 /* TODO: handle errors */
844 printf("%s\n", evalue);
845 free(evalue);
846
847 } else if (expandVars) {
848 char *expr = str_concat3("${", varname, "}");
849 char *evalue = Var_Subst(expr, SCOPE_GLOBAL, VARE_EVAL);
850 /* TODO: handle errors */
851 free(expr);
852 printf("%s\n", evalue);
853 free(evalue);
854
855 } else {
856 FStr value = Var_Value(SCOPE_GLOBAL, varname);
857 printf("%s\n", value.str != NULL ? value.str : "");
858 FStr_Done(&value);
859 }
860 }
861
862 /*
863 * Return a bool based on a variable.
864 *
865 * If the knob is not set, return the fallback.
866 * If set, anything that looks or smells like "No", "False", "Off", "0", etc.
867 * is false, otherwise true.
868 */
869 bool
GetBooleanExpr(const char * expr,bool fallback)870 GetBooleanExpr(const char *expr, bool fallback)
871 {
872 char *value;
873 bool res;
874
875 value = Var_Subst(expr, SCOPE_GLOBAL, VARE_EVAL);
876 /* TODO: handle errors */
877 res = ParseBoolean(value, fallback);
878 free(value);
879 return res;
880 }
881
882 static void
PrintVariables(void)883 PrintVariables(void)
884 {
885 StringListNode *ln;
886 bool expandVars;
887
888 if (opts.printVars == PVM_EXPANDED)
889 expandVars = true;
890 else if (opts.debugVflag)
891 expandVars = false;
892 else
893 expandVars = GetBooleanExpr("${.MAKE.EXPAND_VARIABLES}",
894 false);
895
896 for (ln = opts.variables.first; ln != NULL; ln = ln->next)
897 PrintVariable(ln->datum, expandVars);
898 }
899
900 static bool
MakeTargets(void)901 MakeTargets(void)
902 {
903 GNodeList targets = LST_INIT;
904 bool outOfDate; /* false if all targets up to date */
905
906 if (Lst_IsEmpty(&opts.create))
907 Parse_MainName(&targets);
908 else
909 Targ_FindList(&targets, &opts.create);
910
911 if (!opts.compatMake) {
912 if (!opts.query) {
913 Job_Init();
914 jobsRunning = true;
915 }
916
917 outOfDate = Make_MakeParallel(&targets);
918 } else {
919 Compat_MakeAll(&targets);
920 outOfDate = false;
921 }
922 Lst_Done(&targets); /* Don't free the targets themselves. */
923 return outOfDate;
924 }
925
926 /*
927 * Set up the .TARGETS variable to contain the list of targets to be created.
928 * If none specified, make the variable empty for now, the parser will fill
929 * in the default or .MAIN target later.
930 */
931 static void
InitVarTargets(void)932 InitVarTargets(void)
933 {
934 StringListNode *ln;
935
936 if (Lst_IsEmpty(&opts.create)) {
937 Global_Set(".TARGETS", "");
938 return;
939 }
940
941 for (ln = opts.create.first; ln != NULL; ln = ln->next) {
942 const char *name = ln->datum;
943 Global_Append(".TARGETS", name);
944 }
945 }
946
947 static void
InitRandom(void)948 InitRandom(void)
949 {
950 struct timeval tv;
951
952 gettimeofday(&tv, NULL);
953 srandom((unsigned)(tv.tv_sec + tv.tv_usec));
954 }
955
956 static const char *
InitVarMachine(const struct utsname * utsname MAKE_ATTR_UNUSED)957 InitVarMachine(const struct utsname *utsname MAKE_ATTR_UNUSED)
958 {
959 #ifdef FORCE_MACHINE
960 return FORCE_MACHINE;
961 #else
962 const char *machine = getenv("MACHINE");
963
964 if (machine != NULL)
965 return machine;
966
967 #if defined(MAKE_NATIVE)
968 return utsname->machine;
969 #elif defined(MAKE_MACHINE)
970 return MAKE_MACHINE;
971 #else
972 return "unknown";
973 #endif
974 #endif
975 }
976
977 static const char *
InitVarMachineArch(void)978 InitVarMachineArch(void)
979 {
980 #ifdef FORCE_MACHINE_ARCH
981 return FORCE_MACHINE_ARCH;
982 #else
983 const char *env = getenv("MACHINE_ARCH");
984 if (env != NULL)
985 return env;
986
987 #if defined(MAKE_NATIVE) && defined(CTL_HW)
988 {
989 struct utsname utsname;
990 static char machine_arch_buf[sizeof utsname.machine];
991 const int mib[2] = { CTL_HW, HW_MACHINE_ARCH };
992 size_t len = sizeof machine_arch_buf;
993
994 if (sysctl(mib, (unsigned)__arraycount(mib),
995 machine_arch_buf, &len, NULL, 0) < 0) {
996 (void)fprintf(stderr, "%s: sysctl: %s\n",
997 progname, strerror(errno));
998 exit(2);
999 }
1000
1001 return machine_arch_buf;
1002 }
1003 #elif defined(MACHINE_ARCH)
1004 return MACHINE_ARCH;
1005 #elif defined(MAKE_MACHINE_ARCH)
1006 return MAKE_MACHINE_ARCH;
1007 #else
1008 return "unknown";
1009 #endif
1010 #endif
1011 }
1012
1013 #ifndef NO_PWD_OVERRIDE
1014 /*
1015 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX
1016 * since the value of curdir can vary depending on how we got
1017 * here. That is, sitting at a shell prompt (shell that provides $PWD)
1018 * or via subdir.mk, in which case it's likely a shell which does
1019 * not provide it.
1020 *
1021 * So, to stop it breaking this case only, we ignore PWD if
1022 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains an expression.
1023 */
1024 static void
HandlePWD(const struct stat * curdir_st)1025 HandlePWD(const struct stat *curdir_st)
1026 {
1027 char *pwd;
1028 FStr makeobjdir;
1029 struct stat pwd_st;
1030
1031 if (ignorePWD || (pwd = getenv("PWD")) == NULL)
1032 return;
1033
1034 if (Var_Exists(SCOPE_CMDLINE, "MAKEOBJDIRPREFIX"))
1035 return;
1036
1037 makeobjdir = Var_Value(SCOPE_CMDLINE, "MAKEOBJDIR");
1038 if (makeobjdir.str != NULL && strchr(makeobjdir.str, '$') != NULL)
1039 goto ignore_pwd;
1040
1041 if (stat(pwd, &pwd_st) == 0 &&
1042 curdir_st->st_ino == pwd_st.st_ino &&
1043 curdir_st->st_dev == pwd_st.st_dev)
1044 snprintf(curdir, MAXPATHLEN, "%s", pwd);
1045
1046 ignore_pwd:
1047 FStr_Done(&makeobjdir);
1048 }
1049 #endif
1050
1051 /*
1052 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that, MAKEOBJDIR is set
1053 * in the environment, try only that value and fall back to .CURDIR if it
1054 * does not exist.
1055 *
1056 * Otherwise, try _PATH_OBJDIR.MACHINE-MACHINE_ARCH, _PATH_OBJDIR.MACHINE,
1057 * and finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none of these
1058 * paths exist, just use .CURDIR.
1059 */
1060 static void
InitObjdir(const char * machine,const char * machine_arch)1061 InitObjdir(const char *machine, const char *machine_arch)
1062 {
1063 bool writable;
1064
1065 Dir_InitCur(curdir);
1066 writable = GetBooleanExpr("${MAKE_OBJDIR_CHECK_WRITABLE}", true);
1067 (void)Main_SetObjdir(false, "%s", curdir);
1068
1069 if (!SetVarObjdir(writable, "MAKEOBJDIRPREFIX", curdir) &&
1070 !SetVarObjdir(writable, "MAKEOBJDIR", "") &&
1071 !Main_SetObjdir(writable, "%s.%s-%s", _PATH_OBJDIR, machine, machine_arch) &&
1072 !Main_SetObjdir(writable, "%s.%s", _PATH_OBJDIR, machine) &&
1073 !Main_SetObjdir(writable, "%s", _PATH_OBJDIR))
1074 (void)Main_SetObjdir(writable, "%s%s", _PATH_OBJDIRPREFIX, curdir);
1075 }
1076
1077 /* get rid of resource limit on file descriptors */
1078 static void
UnlimitFiles(void)1079 UnlimitFiles(void)
1080 {
1081 #if defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE)
1082 struct rlimit rl;
1083 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 &&
1084 rl.rlim_cur != rl.rlim_max) {
1085 #ifdef BMAKE_NOFILE_MAX
1086 if (BMAKE_NOFILE_MAX < rl.rlim_max)
1087 rl.rlim_cur = BMAKE_NOFILE_MAX;
1088 else
1089 #endif
1090 rl.rlim_cur = rl.rlim_max;
1091 (void)setrlimit(RLIMIT_NOFILE, &rl);
1092 }
1093 #endif
1094 }
1095
1096 static void
CmdOpts_Init(void)1097 CmdOpts_Init(void)
1098 {
1099 opts.compatMake = false;
1100 memset(&opts.debug, 0, sizeof(opts.debug));
1101 /* opts.debug_file has already been initialized earlier */
1102 opts.strict = false;
1103 opts.debugVflag = false;
1104 opts.checkEnvFirst = false;
1105 Lst_Init(&opts.makefiles);
1106 opts.ignoreErrors = false; /* Pay attention to non-zero returns */
1107 opts.maxJobs = 1;
1108 opts.keepgoing = false; /* Stop on error */
1109 opts.noRecursiveExecute = false; /* Execute all .MAKE targets */
1110 opts.noExecute = false; /* Execute all commands */
1111 opts.query = false;
1112 opts.noBuiltins = false; /* Read the built-in rules */
1113 opts.silent = false; /* Print commands as executed */
1114 opts.touch = false;
1115 opts.printVars = PVM_NONE;
1116 Lst_Init(&opts.variables);
1117 opts.parseWarnFatal = false;
1118 opts.enterFlag = false;
1119 opts.varNoExportEnv = false;
1120 Lst_Init(&opts.create);
1121 }
1122
1123 /*
1124 * Initialize MAKE and .MAKE to the path of the executable, so that it can be
1125 * found by execvp(3) and the shells, even after a chdir.
1126 *
1127 * If it's a relative path and contains a '/', resolve it to an absolute path.
1128 * Otherwise keep it as is, assuming it will be found in the PATH.
1129 */
1130 static void
InitVarMake(const char * argv0)1131 InitVarMake(const char *argv0)
1132 {
1133 const char *make = argv0;
1134 char pathbuf[MAXPATHLEN];
1135
1136 if (argv0[0] != '/' && strchr(argv0, '/') != NULL) {
1137 const char *abspath = cached_realpath(argv0, pathbuf);
1138 struct stat st;
1139 if (abspath != NULL && abspath[0] == '/' &&
1140 stat(make, &st) == 0)
1141 make = abspath;
1142 }
1143
1144 Global_Set("MAKE", make);
1145 Global_Set(".MAKE", make);
1146 }
1147
1148 /*
1149 * Add the directories from the colon-separated syspath to defSysIncPath.
1150 * After returning, the contents of syspath is unspecified.
1151 */
1152 static void
InitDefSysIncPath(char * syspath)1153 InitDefSysIncPath(char *syspath)
1154 {
1155 static char defsyspath[] = _PATH_DEFSYSPATH;
1156 char *start, *p;
1157
1158 /*
1159 * If no user-supplied system path was given (through the -m option)
1160 * add the directories from the DEFSYSPATH (more than one may be given
1161 * as dir1:...:dirn) to the system include path.
1162 */
1163 if (syspath == NULL || syspath[0] == '\0')
1164 syspath = defsyspath;
1165 else
1166 syspath = bmake_strdup(syspath);
1167
1168 for (start = syspath; *start != '\0'; start = p) {
1169 for (p = start; *p != '\0' && *p != ':'; p++)
1170 continue;
1171 if (*p == ':')
1172 *p++ = '\0';
1173
1174 /* look for magic parent directory search string */
1175 if (strncmp(start, ".../", 4) == 0) {
1176 char *dir = Dir_FindHereOrAbove(curdir, start + 4);
1177 if (dir != NULL) {
1178 (void)SearchPath_Add(defSysIncPath, dir);
1179 free(dir);
1180 }
1181 } else {
1182 (void)SearchPath_Add(defSysIncPath, start);
1183 }
1184 }
1185
1186 if (syspath != defsyspath)
1187 free(syspath);
1188 }
1189
1190 static void
ReadBuiltinRules(void)1191 ReadBuiltinRules(void)
1192 {
1193 StringListNode *ln;
1194 StringList sysMkFiles = LST_INIT;
1195
1196 SearchPath_Expand(
1197 Lst_IsEmpty(&sysIncPath->dirs) ? defSysIncPath : sysIncPath,
1198 _PATH_DEFSYSMK,
1199 &sysMkFiles);
1200 if (Lst_IsEmpty(&sysMkFiles))
1201 Fatal("%s: no system rules (%s).", progname, _PATH_DEFSYSMK);
1202
1203 for (ln = sysMkFiles.first; ln != NULL; ln = ln->next)
1204 if (ReadMakefile(ln->datum))
1205 break;
1206
1207 if (ln == NULL)
1208 Fatal("%s: cannot open %s.",
1209 progname, (const char *)sysMkFiles.first->datum);
1210
1211 Lst_DoneFree(&sysMkFiles);
1212 }
1213
1214 static void
InitMaxJobs(void)1215 InitMaxJobs(void)
1216 {
1217 char *value;
1218 int n;
1219
1220 if (bogusJflag && !opts.compatMake) {
1221 opts.compatMake = true;
1222 Parse_Error(PARSE_WARNING,
1223 "Invalid internal option \"-J\" in \"%s\"; "
1224 "see the manual page",
1225 curdir);
1226 return;
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 #ifndef MAKE_SAVE_DOLLARS_DEFAULT
1318 # define MAKE_SAVE_DOLLARS_DEFAULT "no"
1319 #endif
1320
1321 /*
1322 * Initialize variables such as MAKE, MACHINE, .MAKEFLAGS.
1323 * Initialize a few modules.
1324 * Parse the arguments from MAKEFLAGS and the command line.
1325 */
1326 static void
main_Init(int argc,char ** argv)1327 main_Init(int argc, char **argv)
1328 {
1329 struct stat sa;
1330 const char *machine;
1331 const char *machine_arch;
1332 char *syspath = getenv("MAKESYSPATH");
1333 struct utsname utsname;
1334
1335 /* default to writing debug to stderr */
1336 opts.debug_file = stderr;
1337
1338 Str_Intern_Init();
1339 HashTable_Init(&cached_realpaths);
1340
1341 #ifdef SIGINFO
1342 (void)bmake_signal(SIGINFO, siginfo);
1343 #endif
1344
1345 InitRandom();
1346
1347 progname = str_basename(argv[0]);
1348
1349 UnlimitFiles();
1350
1351 if (uname(&utsname) == -1) {
1352 (void)fprintf(stderr, "%s: uname: %s\n", progname,
1353 strerror(errno));
1354 exit(2);
1355 }
1356
1357 machine = InitVarMachine(&utsname);
1358 machine_arch = InitVarMachineArch();
1359
1360 myPid = getpid();
1361
1362 /* Just in case MAKEOBJDIR wants us to do something tricky. */
1363 Targ_Init();
1364 #ifdef FORCE_MAKE_OS
1365 Global_Set_ReadOnly(".MAKE.OS", FORCE_MAKE_OS);
1366 #else
1367 Global_Set_ReadOnly(".MAKE.OS", utsname.sysname);
1368 #endif
1369 Global_Set("MACHINE", machine);
1370 Global_Set("MACHINE_ARCH", machine_arch);
1371 #ifdef MAKE_VERSION
1372 Global_Set_ReadOnly(".MAKE.VERSION", MAKE_VERSION);
1373 /* for backwards compatibility */
1374 Global_Set("MAKE_VERSION", MAKE_VERSION);
1375 #endif
1376 Global_Set_ReadOnly(".newline", "\n");
1377 #ifndef MAKEFILE_PREFERENCE_LIST
1378 /* This is the traditional preference for makefiles. */
1379 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile"
1380 #endif
1381 Global_Set(".MAKE.MAKEFILE_PREFERENCE", MAKEFILE_PREFERENCE_LIST);
1382 Global_Set(".MAKE.DEPENDFILE", ".depend");
1383 /* Tell makefiles like jobs.mk whether we support -jC */
1384 #ifdef _SC_NPROCESSORS_ONLN
1385 Global_Set_ReadOnly(".MAKE.JOBS.C", "yes");
1386 #else
1387 Global_Set_ReadOnly(".MAKE.JOBS.C", "no");
1388 #endif
1389 Global_Set(MAKE_SAVE_DOLLARS, MAKE_SAVE_DOLLARS_DEFAULT);
1390
1391 CmdOpts_Init();
1392 allPrecious = false; /* Remove targets when interrupted */
1393 deleteOnError = false; /* Historical default behavior */
1394 jobsRunning = false;
1395
1396 maxJobTokens = opts.maxJobs;
1397 ignorePWD = false;
1398
1399 /*
1400 * Initialize the parsing, directory and variable modules to prepare
1401 * for the reading of inclusion paths and variable settings on the
1402 * command line
1403 */
1404
1405 /*
1406 * Initialize various variables.
1407 * MAKE also gets this name, for compatibility
1408 * .MAKEFLAGS gets set to the empty string just in case.
1409 * MFLAGS also gets initialized empty, for compatibility.
1410 */
1411 Parse_Init();
1412 InitVarMake(argv[0]);
1413 Global_Set(MAKEFLAGS, "");
1414 Global_Set(".MAKEOVERRIDES", "");
1415 Global_Set("MFLAGS", "");
1416 Global_Set(".ALLTARGETS", "");
1417 Global_Set_ReadOnly(".MAKE.LEVEL.ENV", MAKE_LEVEL_ENV);
1418
1419 /* Set some other useful variables. */
1420 {
1421 char buf[64];
1422 const char *ep = getenv(MAKE_LEVEL_ENV);
1423
1424 makelevel = ep != NULL && ep[0] != '\0' ? atoi(ep) : 0;
1425 if (makelevel < 0)
1426 makelevel = 0;
1427 snprintf(buf, sizeof buf, "%d", makelevel);
1428 Global_Set(".MAKE.LEVEL", buf);
1429 snprintf(buf, sizeof buf, "%u", myPid);
1430 Global_Set_ReadOnly(".MAKE.PID", buf);
1431 snprintf(buf, sizeof buf, "%u", getppid());
1432 Global_Set_ReadOnly(".MAKE.PPID", buf);
1433 snprintf(buf, sizeof buf, "%u", getuid());
1434 Global_Set_ReadOnly(".MAKE.UID", buf);
1435 snprintf(buf, sizeof buf, "%u", getgid());
1436 Global_Set_ReadOnly(".MAKE.GID", buf);
1437 }
1438 if (makelevel > 0) {
1439 char pn[1024];
1440 snprintf(pn, sizeof pn, "%s[%d]", progname, makelevel);
1441 progname = bmake_strdup(pn);
1442 }
1443
1444 #ifdef USE_META
1445 meta_init();
1446 #endif
1447 Dir_Init();
1448
1449 if (getcwd(curdir, MAXPATHLEN) == NULL) {
1450 (void)fprintf(stderr, "%s: getcwd: %s\n",
1451 progname, strerror(errno));
1452 exit(2);
1453 }
1454
1455 {
1456 char *makeflags = explode(getenv("MAKEFLAGS"));
1457 Main_ParseArgLine(makeflags);
1458 free(makeflags);
1459 }
1460
1461 MainParseArgs(argc, argv);
1462
1463 if (opts.enterFlag)
1464 printf("%s: Entering directory `%s'\n", progname, curdir);
1465
1466 if (stat(curdir, &sa) == -1) {
1467 (void)fprintf(stderr, "%s: stat %s: %s\n",
1468 progname, curdir, strerror(errno));
1469 exit(2);
1470 }
1471
1472 #ifndef NO_PWD_OVERRIDE
1473 HandlePWD(&sa);
1474 #endif
1475 Global_Set(".CURDIR", curdir);
1476
1477 InitObjdir(machine, machine_arch);
1478
1479 Arch_Init();
1480 Suff_Init();
1481 Trace_Init(tracefile);
1482
1483 defaultNode = NULL;
1484 (void)time(&now);
1485
1486 Trace_Log(MAKESTART, NULL);
1487
1488 InitVarTargets();
1489
1490 InitDefSysIncPath(syspath);
1491 }
1492
1493 /*
1494 * Read the system makefile followed by either makefile, Makefile or the
1495 * files given by the -f option. Exit on parse errors.
1496 */
1497 static void
main_ReadFiles(void)1498 main_ReadFiles(void)
1499 {
1500
1501 if (Lst_IsEmpty(&sysIncPath->dirs))
1502 SearchPath_AddAll(sysIncPath, defSysIncPath);
1503
1504 Dir_SetSYSPATH();
1505 if (!opts.noBuiltins)
1506 ReadBuiltinRules();
1507
1508 posix_state = PS_MAYBE_NEXT_LINE;
1509 if (!Lst_IsEmpty(&opts.makefiles))
1510 ReadAllMakefiles(&opts.makefiles);
1511 else
1512 ReadFirstDefaultMakefile();
1513 }
1514
1515 /* Compute the dependency graph. */
1516 static void
main_PrepareMaking(void)1517 main_PrepareMaking(void)
1518 {
1519 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */
1520 if (!opts.noBuiltins || opts.printVars == PVM_NONE) {
1521 makeDependfile = Var_Subst("${.MAKE.DEPENDFILE}",
1522 SCOPE_CMDLINE, VARE_EVAL);
1523 if (makeDependfile[0] != '\0') {
1524 /* TODO: handle errors */
1525 doing_depend = true;
1526 (void)ReadMakefile(makeDependfile);
1527 doing_depend = false;
1528 }
1529 }
1530
1531 if (enterFlagObj)
1532 printf("%s: Entering directory `%s'\n", progname, objdir);
1533
1534 MakeMode();
1535
1536 {
1537 FStr makeflags = Var_Value(SCOPE_GLOBAL, MAKEFLAGS);
1538 Global_Append("MFLAGS", makeflags.str);
1539 FStr_Done(&makeflags);
1540 }
1541
1542 InitMaxJobs();
1543
1544 if (!opts.compatMake && !forceJobs)
1545 opts.compatMake = true;
1546
1547 if (!opts.compatMake)
1548 TokenPool_Init(maxJobTokens, tokenPoolReader, tokenPoolWriter);
1549 DEBUG5(JOB, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n",
1550 tokenPoolReader, tokenPoolWriter, opts.maxJobs, maxJobTokens,
1551 opts.compatMake ? 1 : 0);
1552
1553 if (opts.printVars == PVM_NONE)
1554 Main_ExportMAKEFLAGS(true); /* initial export */
1555
1556 InitVpath();
1557
1558 /*
1559 * Now that all search paths have been read for suffixes et al, it's
1560 * time to add the default search path to their lists...
1561 */
1562 Suff_ExtendPaths();
1563
1564 /*
1565 * Propagate attributes through :: dependency lists.
1566 */
1567 Targ_Propagate();
1568
1569 /* print the initial graph, if the user requested it */
1570 if (DEBUG(GRAPH1))
1571 Targ_PrintGraph(1);
1572 }
1573
1574 /*
1575 * Make the targets, or print variables.
1576 * Return whether any of the targets is out-of-date.
1577 */
1578 static bool
main_Run(void)1579 main_Run(void)
1580 {
1581 if (opts.printVars != PVM_NONE) {
1582 PrintVariables();
1583 return false;
1584 } else
1585 return MakeTargets();
1586 }
1587
1588 /* Clean up after making the targets. */
1589 static void
main_CleanUp(void)1590 main_CleanUp(void)
1591 {
1592 #ifdef CLEANUP
1593 Lst_DoneFree(&opts.variables);
1594 Lst_DoneFree(&opts.makefiles);
1595 Lst_DoneFree(&opts.create);
1596 #endif
1597
1598 if (DEBUG(GRAPH2))
1599 Targ_PrintGraph(2);
1600
1601 Trace_Log(MAKEEND, NULL);
1602
1603 if (enterFlagObj)
1604 printf("%s: Leaving directory `%s'\n", progname, objdir);
1605 if (opts.enterFlag)
1606 printf("%s: Leaving directory `%s'\n", progname, curdir);
1607
1608 Var_Stats();
1609 Targ_Stats();
1610
1611 #ifdef USE_META
1612 meta_finish();
1613 #endif
1614 #ifdef CLEANUP
1615 Suff_End();
1616 Targ_End();
1617 Arch_End();
1618 Parse_End();
1619 Dir_End();
1620 Job_End();
1621 #endif
1622 Trace_End();
1623 #ifdef CLEANUP
1624 Str_Intern_End();
1625 #endif
1626 }
1627
1628 static int
main_ExitCode(bool outOfDate)1629 main_ExitCode(bool outOfDate)
1630 {
1631 if ((opts.strict && main_errors > 0) || parseErrors > 0)
1632 return 2; /* Not 1 so -q can distinguish error */
1633 return outOfDate ? 1 : 0;
1634 }
1635
1636 int
main(int argc,char ** argv)1637 main(int argc, char **argv)
1638 {
1639 bool outOfDate;
1640
1641 main_Init(argc, argv);
1642 main_ReadFiles();
1643 main_PrepareMaking();
1644 outOfDate = main_Run();
1645 main_CleanUp();
1646 return main_ExitCode(outOfDate);
1647 }
1648
1649 /*
1650 * Open and parse the given makefile, with all its side effects.
1651 * Return false if the file could not be opened.
1652 */
1653 static bool
ReadMakefile(const char * fname)1654 ReadMakefile(const char *fname)
1655 {
1656 int fd;
1657 char *name, *path = NULL;
1658
1659 if (strcmp(fname, "-") == 0) {
1660 Parse_File("(stdin)", -1);
1661 Var_Set(SCOPE_INTERNAL, "MAKEFILE", "");
1662 } else {
1663 if (strncmp(fname, ".../", 4) == 0) {
1664 name = Dir_FindHereOrAbove(curdir, fname + 4);
1665 if (name != NULL) {
1666 /* Dir_FindHereOrAbove returns dirname */
1667 path = str_concat3(name, "/",
1668 str_basename(fname));
1669 free(name);
1670 fd = open(path, O_RDONLY);
1671 if (fd != -1) {
1672 fname = path;
1673 goto found;
1674 }
1675 }
1676 }
1677 /* if we've chdir'd, rebuild the path name */
1678 if (strcmp(curdir, objdir) != 0 && *fname != '/') {
1679 path = str_concat3(curdir, "/", fname);
1680 fd = open(path, O_RDONLY);
1681 if (fd != -1) {
1682 fname = path;
1683 goto found;
1684 }
1685 free(path);
1686
1687 /* If curdir failed, try objdir (ala .depend) */
1688 path = str_concat3(objdir, "/", fname);
1689 fd = open(path, O_RDONLY);
1690 if (fd != -1) {
1691 fname = path;
1692 goto found;
1693 }
1694 } else {
1695 fd = open(fname, O_RDONLY);
1696 if (fd != -1)
1697 goto found;
1698 }
1699 /* look in -I and system include directories. */
1700 name = Dir_FindFile(fname, parseIncPath);
1701 if (name == NULL) {
1702 SearchPath *sysInc = Lst_IsEmpty(&sysIncPath->dirs)
1703 ? defSysIncPath : sysIncPath;
1704 name = Dir_FindFile(fname, sysInc);
1705 }
1706 if (name == NULL || (fd = open(name, O_RDONLY)) == -1) {
1707 free(name);
1708 free(path);
1709 return false;
1710 }
1711 fname = name;
1712 /*
1713 * set the MAKEFILE variable desired by System V fans -- the
1714 * placement of the setting here means it gets set to the last
1715 * makefile specified, as it is set by SysV make.
1716 */
1717 found:
1718 if (!doing_depend)
1719 Var_Set(SCOPE_INTERNAL, "MAKEFILE", fname);
1720 Parse_File(fname, fd);
1721 }
1722 free(path);
1723 return true;
1724 }
1725
1726 /* populate av for Cmd_Exec and Compat_RunCommand */
1727 void
Cmd_Argv(const char * cmd,size_t cmd_len,const char * av[5],char * cmd_file,size_t cmd_filesz,bool eflag,bool xflag)1728 Cmd_Argv(const char *cmd, size_t cmd_len, const char *av[5],
1729 char *cmd_file, size_t cmd_filesz, bool eflag, bool xflag)
1730 {
1731 int cmd_fd = -1;
1732
1733 if (shellPath == NULL)
1734 Shell_Init();
1735
1736 if (cmd_file != NULL) {
1737 if (cmd_len == 0)
1738 cmd_len = strlen(cmd);
1739
1740 if (cmd_len > MAKE_CMDLEN_LIMIT) {
1741 cmd_fd = mkTempFile(NULL, cmd_file, cmd_filesz);
1742 if (cmd_fd >= 0) {
1743 ssize_t n;
1744
1745 n = write(cmd_fd, cmd, cmd_len);
1746 close(cmd_fd);
1747 if (n < (ssize_t)cmd_len) {
1748 unlink(cmd_file);
1749 cmd_fd = -1;
1750 }
1751 }
1752 } else
1753 cmd_file[0] = '\0';
1754 }
1755
1756 /* The following works for any of the builtin shell specs. */
1757 *av++ = shellPath;
1758 if (eflag)
1759 *av++ = shellErrFlag;
1760 if (cmd_fd >= 0) {
1761 if (xflag)
1762 *av++ = "-x";
1763 *av++ = cmd_file;
1764 } else {
1765 *av++ = xflag ? "-xc" : "-c";
1766 *av++ = cmd;
1767 }
1768 *av = NULL;
1769 }
1770
1771 /*
1772 * Execute the command in cmd, and return its output (only stdout, not
1773 * stderr, possibly empty). In the output, replace newlines with spaces.
1774 */
1775 char *
Cmd_Exec(const char * cmd,char ** error)1776 Cmd_Exec(const char *cmd, char **error)
1777 {
1778 const char *args[5]; /* Arguments for invoking the shell */
1779 int pipefds[2];
1780 int cpid; /* Child PID */
1781 int pid; /* PID from wait() */
1782 WAIT_T status; /* command exit status */
1783 Buffer buf; /* buffer to store the result */
1784 ssize_t bytes_read;
1785 char *output;
1786 char *p;
1787 int saved_errno;
1788 char cmd_file[MAXPATHLEN];
1789
1790 DEBUG1(VAR, "Capturing the output of command \"%s\"\n", cmd);
1791
1792 Cmd_Argv(cmd, 0, args, cmd_file, sizeof(cmd_file), false, false);
1793 if (pipe(pipefds) == -1) {
1794 *error = str_concat3(
1795 "Couldn't create pipe for \"", cmd, "\"");
1796 return bmake_strdup("");
1797 }
1798
1799 Var_ReexportVars(SCOPE_GLOBAL);
1800 Var_ExportStackTrace(NULL, cmd);
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
1811 case -1:
1812 *error = str_concat3("Couldn't exec \"", cmd, "\"");
1813 return bmake_strdup("");
1814 }
1815
1816 (void)close(pipefds[1]); /* No need for the writing half */
1817
1818 saved_errno = 0;
1819 Buf_Init(&buf);
1820
1821 do {
1822 char result[BUFSIZ];
1823 bytes_read = read(pipefds[0], result, sizeof result);
1824 if (bytes_read > 0)
1825 Buf_AddBytes(&buf, result, (size_t)bytes_read);
1826 } while (bytes_read > 0 || (bytes_read == -1 && errno == EINTR));
1827 if (bytes_read == -1)
1828 saved_errno = errno;
1829
1830 (void)close(pipefds[0]); /* Close the input side of the pipe. */
1831
1832 while ((pid = waitpid(cpid, &status, 0)) != cpid && pid >= 0)
1833 JobReapChild(pid, status, false);
1834
1835 if (Buf_EndsWith(&buf, '\n'))
1836 buf.data[buf.len - 1] = '\0';
1837
1838 output = Buf_DoneData(&buf);
1839 for (p = output; *p != '\0'; p++)
1840 if (*p == '\n')
1841 *p = ' ';
1842
1843 if (WIFSIGNALED(status))
1844 *error = str_concat3("\"", cmd, "\" exited on a signal");
1845 else if (WEXITSTATUS(status) != 0) {
1846 Buffer errBuf;
1847 Buf_Init(&errBuf);
1848 Buf_AddStr(&errBuf, "Command \"");
1849 Buf_AddStr(&errBuf, cmd);
1850 Buf_AddStr(&errBuf, "\" exited with status ");
1851 Buf_AddInt(&errBuf, WEXITSTATUS(status));
1852 *error = Buf_DoneData(&errBuf);
1853 } else if (saved_errno != 0)
1854 *error = str_concat3(
1855 "Couldn't read shell's output for \"", cmd, "\"");
1856 else
1857 *error = NULL;
1858 if (cmd_file[0] != '\0')
1859 unlink(cmd_file);
1860 return output;
1861 }
1862
1863 /*
1864 * Print a printf-style error message.
1865 *
1866 * In default mode, this error message has no consequences, for compatibility
1867 * reasons, in particular it does not affect the exit status. Only in lint
1868 * mode (-dL) it does.
1869 */
1870 void
Error(const char * fmt,...)1871 Error(const char *fmt, ...)
1872 {
1873 va_list ap;
1874 FILE *f;
1875
1876 f = opts.debug_file;
1877 if (f == stdout)
1878 f = stderr;
1879 (void)fflush(stdout);
1880
1881 for (;;) {
1882 fprintf(f, "%s: ", progname);
1883 va_start(ap, fmt);
1884 (void)vfprintf(f, fmt, ap);
1885 va_end(ap);
1886 (void)fprintf(f, "\n");
1887 (void)fflush(f);
1888 if (f == stderr)
1889 break;
1890 f = stderr;
1891 }
1892 main_errors++;
1893 }
1894
1895 /*
1896 * Wait for any running jobs to finish, then produce an error message,
1897 * finally exit immediately.
1898 *
1899 * Exiting immediately differs from Parse_Error, which exits only after the
1900 * current top-level makefile has been parsed completely.
1901 */
1902 void
Fatal(const char * fmt,...)1903 Fatal(const char *fmt, ...)
1904 {
1905 va_list ap;
1906
1907 if (jobsRunning)
1908 Job_Wait();
1909
1910 (void)fflush(stdout);
1911 fprintf(stderr, "%s: ", progname);
1912 va_start(ap, fmt);
1913 (void)vfprintf(stderr, fmt, ap);
1914 va_end(ap);
1915 (void)fprintf(stderr, "\n");
1916 (void)fflush(stderr);
1917 PrintStackTrace(stderr, true);
1918
1919 PrintOnError(NULL, "\n");
1920
1921 if (DEBUG(GRAPH2) || DEBUG(GRAPH3))
1922 Targ_PrintGraph(2);
1923 Trace_Log(MAKEERROR, NULL);
1924 exit(2); /* Not 1 so -q can distinguish error */
1925 }
1926
1927 /*
1928 * Major exception once jobs are being created.
1929 * Kills all jobs, prints a message and exits.
1930 */
1931 void
Punt(const char * fmt,...)1932 Punt(const char *fmt, ...)
1933 {
1934 va_list ap;
1935
1936 (void)fflush(stdout);
1937 (void)fprintf(stderr, "%s: ", progname);
1938 va_start(ap, fmt);
1939 (void)vfprintf(stderr, fmt, ap);
1940 va_end(ap);
1941 (void)fprintf(stderr, "\n");
1942 (void)fflush(stderr);
1943
1944 PrintOnError(NULL, "\n");
1945
1946 DieHorribly();
1947 }
1948
1949 /* Exit without giving a message. */
1950 void
DieHorribly(void)1951 DieHorribly(void)
1952 {
1953 if (jobsRunning)
1954 Job_AbortAll();
1955 if (DEBUG(GRAPH2))
1956 Targ_PrintGraph(2);
1957 Trace_Log(MAKEERROR, NULL);
1958 exit(2); /* Not 1 so -q can distinguish error */
1959 }
1960
1961 int
unlink_file(const char * file)1962 unlink_file(const char *file)
1963 {
1964 struct stat st;
1965
1966 if (lstat(file, &st) == -1)
1967 return -1;
1968
1969 if (S_ISDIR(st.st_mode)) {
1970 /*
1971 * POSIX says for unlink: "The path argument shall not name
1972 * a directory unless [...]".
1973 */
1974 errno = EISDIR;
1975 return -1;
1976 }
1977 return unlink(file);
1978 }
1979
1980 static void
write_all(int fd,const void * data,size_t n)1981 write_all(int fd, const void *data, size_t n)
1982 {
1983 const char *mem = data;
1984
1985 while (n > 0) {
1986 ssize_t written = write(fd, mem, n);
1987 /* XXX: Should this EAGAIN be EINTR? */
1988 if (written == -1 && errno == EAGAIN)
1989 continue;
1990 if (written == -1)
1991 break;
1992 mem += written;
1993 n -= (size_t)written;
1994 }
1995 }
1996
1997 /* Print why exec failed, avoiding stdio. */
1998 void MAKE_ATTR_DEAD
execDie(const char * func,const char * arg)1999 execDie(const char *func, const char *arg)
2000 {
2001 char msg[1024];
2002 int len;
2003
2004 len = snprintf(msg, sizeof(msg), "%s: %s(%s): %s\n",
2005 progname, func, arg, strerror(errno));
2006 write_all(STDERR_FILENO, msg, (size_t)len);
2007 _exit(1);
2008 }
2009
2010 static void
purge_relative_cached_realpaths(void)2011 purge_relative_cached_realpaths(void)
2012 {
2013 HashIter hi;
2014 bool more;
2015
2016 HashIter_Init(&hi, &cached_realpaths);
2017 more = HashIter_Next(&hi);
2018 while (more) {
2019 HashEntry *he = hi.entry;
2020 more = HashIter_Next(&hi);
2021 if (he->key[0] != '/') {
2022 DEBUG1(DIR, "cached_realpath: purging %s\n", he->key);
2023 free(he->value);
2024 HashTable_DeleteEntry(&cached_realpaths, he);
2025 }
2026 }
2027 }
2028
2029 const char *
cached_realpath(const char * pathname,char * resolved)2030 cached_realpath(const char *pathname, char *resolved)
2031 {
2032 const char *rp;
2033
2034 if (pathname == NULL || pathname[0] == '\0')
2035 return NULL;
2036
2037 rp = HashTable_FindValue(&cached_realpaths, pathname);
2038 if (rp != NULL) {
2039 snprintf(resolved, MAXPATHLEN, "%s", rp);
2040 return resolved;
2041 }
2042
2043 rp = realpath(pathname, resolved);
2044 if (rp != NULL) {
2045 HashTable_Set(&cached_realpaths, pathname, bmake_strdup(rp));
2046 DEBUG2(DIR, "cached_realpath: %s -> %s\n", pathname, rp);
2047 return resolved;
2048 }
2049
2050 /* should we negative-cache? */
2051 return NULL;
2052 }
2053
2054 /*
2055 * Return true if we should die without noise.
2056 * For example our failing child was a sub-make or failure happened elsewhere.
2057 */
2058 bool
shouldDieQuietly(GNode * gn,int bf)2059 shouldDieQuietly(GNode *gn, int bf)
2060 {
2061 static int quietly = -1;
2062
2063 if (quietly < 0) {
2064 if (DEBUG(JOB) ||
2065 !GetBooleanExpr("${.MAKE.DIE_QUIETLY}", true))
2066 quietly = 0;
2067 else if (bf >= 0)
2068 quietly = bf;
2069 else
2070 quietly = gn != NULL && gn->type & OP_MAKE ? 1 : 0;
2071 }
2072 return quietly != 0;
2073 }
2074
2075 static void
SetErrorVars(GNode * gn)2076 SetErrorVars(GNode *gn)
2077 {
2078 StringListNode *ln;
2079 char sts[16];
2080
2081 /*
2082 * We can print this even if there is no .ERROR target.
2083 */
2084 snprintf(sts, sizeof(sts), "%d", gn->exit_status);
2085 Global_Set(".ERROR_EXIT", sts);
2086 Global_Set(".ERROR_TARGET", gn->name);
2087 Global_Delete(".ERROR_CMD");
2088
2089 for (ln = gn->commands.first; ln != NULL; ln = ln->next) {
2090 const char *cmd = ln->datum;
2091
2092 if (cmd == NULL)
2093 break;
2094 Global_Append(".ERROR_CMD", cmd);
2095 }
2096 }
2097
2098 /*
2099 * Print some helpful information in case of an error.
2100 * The caller should exit soon after calling this function.
2101 */
2102 void
PrintOnError(GNode * gn,const char * msg)2103 PrintOnError(GNode *gn, const char *msg)
2104 {
2105 static GNode *errorNode = NULL;
2106 StringListNode *ln;
2107
2108 if (DEBUG(HASH)) {
2109 Targ_Stats();
2110 Var_Stats();
2111 }
2112
2113 if (errorNode != NULL)
2114 return; /* we've been here! */
2115
2116 printf("%s%s: stopped", msg, progname);
2117 ln = opts.create.first;
2118 if (ln != NULL || mainNode != NULL) {
2119 printf(" making \"");
2120 if (ln != NULL) {
2121 printf("%s", (const char *)ln->datum);
2122 for (ln = ln->next; ln != NULL; ln = ln->next)
2123 printf(" %s", (const char *)ln->datum);
2124 } else
2125 printf("%s", mainNode->name);
2126 printf("\"");
2127 }
2128 printf(" in %s\n", curdir);
2129
2130 /* we generally want to keep quiet if a sub-make died */
2131 if (shouldDieQuietly(gn, -1))
2132 return;
2133
2134 if (gn != NULL)
2135 SetErrorVars(gn);
2136
2137 {
2138 char *errorVarsValues;
2139 enum PosixState p_s = posix_state;
2140
2141 posix_state = PS_TOO_LATE;
2142 errorVarsValues = Var_Subst(
2143 "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}",
2144 SCOPE_GLOBAL, VARE_EVAL);
2145 /* TODO: handle errors */
2146 printf("%s", errorVarsValues);
2147 free(errorVarsValues);
2148 posix_state = p_s;
2149 }
2150
2151 fflush(stdout);
2152
2153 /*
2154 * Finally, see if there is a .ERROR target, and run it if so.
2155 */
2156 errorNode = Targ_FindNode(".ERROR");
2157 if (errorNode != NULL) {
2158 errorNode->type |= OP_SPECIAL;
2159 Compat_Make(errorNode, errorNode);
2160 }
2161 }
2162
2163 void
Main_ExportMAKEFLAGS(bool first)2164 Main_ExportMAKEFLAGS(bool first)
2165 {
2166 static bool once = true;
2167 enum PosixState p_s;
2168 char *flags;
2169
2170 if (once != first)
2171 return;
2172 once = false;
2173
2174 p_s = posix_state;
2175 posix_state = PS_TOO_LATE;
2176 flags = Var_Subst(
2177 "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}",
2178 SCOPE_CMDLINE, VARE_EVAL);
2179 /* TODO: handle errors */
2180 if (flags[0] != '\0')
2181 setenv("MAKEFLAGS", flags, 1);
2182 free(flags);
2183 posix_state = p_s;
2184 }
2185
2186 char *
getTmpdir(void)2187 getTmpdir(void)
2188 {
2189 static char *tmpdir = NULL;
2190 struct stat st;
2191
2192 if (tmpdir != NULL)
2193 return tmpdir;
2194
2195 /* Honor $TMPDIR if it is valid, strip a trailing '/'. */
2196 tmpdir = Var_Subst("${TMPDIR:tA:U" _PATH_TMP ":S,/$,,W}/",
2197 SCOPE_GLOBAL, VARE_EVAL);
2198 /* TODO: handle errors */
2199
2200 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) {
2201 free(tmpdir);
2202 tmpdir = bmake_strdup(_PATH_TMP);
2203 }
2204 return tmpdir;
2205 }
2206
2207 /*
2208 * Create and open a temp file using "pattern".
2209 * If tfile is provided, set it to a copy of the filename created.
2210 * Otherwise unlink the file once open.
2211 */
2212 int
mkTempFile(const char * pattern,char * tfile,size_t tfile_sz)2213 mkTempFile(const char *pattern, char *tfile, size_t tfile_sz)
2214 {
2215 static char *tmpdir = NULL;
2216 char tbuf[MAXPATHLEN];
2217 int fd;
2218
2219 if (pattern == NULL)
2220 pattern = "makeXXXXXX";
2221 if (tmpdir == NULL)
2222 tmpdir = getTmpdir();
2223 if (tfile == NULL) {
2224 tfile = tbuf;
2225 tfile_sz = sizeof tbuf;
2226 }
2227
2228 if (pattern[0] == '/')
2229 snprintf(tfile, tfile_sz, "%s", pattern);
2230 else
2231 snprintf(tfile, tfile_sz, "%s%s", tmpdir, pattern);
2232
2233 if ((fd = mkstemp(tfile)) < 0)
2234 Punt("mkstemp %s: %s", tfile, strerror(errno));
2235 if (tfile == tbuf)
2236 unlink(tfile); /* we just want the descriptor */
2237
2238 return fd;
2239 }
2240
2241 /*
2242 * Convert a string representation of a boolean into a boolean value.
2243 * Anything that looks like "No", "False", "Off", "0" etc. is false,
2244 * the empty string is the fallback, everything else is true.
2245 */
2246 bool
ParseBoolean(const char * s,bool fallback)2247 ParseBoolean(const char *s, bool fallback)
2248 {
2249 char ch = ch_tolower(s[0]);
2250 if (ch == '\0')
2251 return fallback;
2252 if (ch == '0' || ch == 'f' || ch == 'n')
2253 return false;
2254 if (ch == 'o')
2255 return ch_tolower(s[1]) != 'f';
2256 return true;
2257 }
2258