1 /* $NetBSD: main.c,v 1.235 2015/10/25 05:24:44 sjg Exp $ */
2
3 /*
4 * Copyright (c) 1988, 1989, 1990, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Adam de Boor.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35 /*
36 * Copyright (c) 1989 by Berkeley Softworks
37 * All rights reserved.
38 *
39 * This code is derived from software contributed to Berkeley by
40 * Adam de Boor.
41 *
42 * Redistribution and use in source and binary forms, with or without
43 * modification, are permitted provided that the following conditions
44 * are met:
45 * 1. Redistributions of source code must retain the above copyright
46 * notice, this list of conditions and the following disclaimer.
47 * 2. Redistributions in binary form must reproduce the above copyright
48 * notice, this list of conditions and the following disclaimer in the
49 * documentation and/or other materials provided with the distribution.
50 * 3. All advertising materials mentioning features or use of this software
51 * must display the following acknowledgement:
52 * This product includes software developed by the University of
53 * California, Berkeley and its contributors.
54 * 4. Neither the name of the University nor the names of its contributors
55 * may be used to endorse or promote products derived from this software
56 * without specific prior written permission.
57 *
58 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
59 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
60 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
61 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
62 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
63 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
64 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
65 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
66 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
67 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
68 * SUCH DAMAGE.
69 */
70
71 #ifndef MAKE_NATIVE
72 static char rcsid[] = "$NetBSD: main.c,v 1.235 2015/10/25 05:24:44 sjg Exp $";
73 #else
74 #include <sys/cdefs.h>
75 #ifndef lint
76 __COPYRIGHT("@(#) Copyright (c) 1988, 1989, 1990, 1993\
77 The Regents of the University of California. All rights reserved.");
78 #endif /* not lint */
79
80 #ifndef lint
81 #if 0
82 static char sccsid[] = "@(#)main.c 8.3 (Berkeley) 3/19/94";
83 #else
84 __RCSID("$NetBSD: main.c,v 1.235 2015/10/25 05:24:44 sjg Exp $");
85 #endif
86 #endif /* not lint */
87 #endif
88
89 /*-
90 * main.c --
91 * The main file for this entire program. Exit routines etc
92 * reside here.
93 *
94 * Utility functions defined in this file:
95 * Main_ParseArgLine Takes a line of arguments, breaks them and
96 * treats them as if they were given when first
97 * invoked. Used by the parse module to implement
98 * the .MFLAGS target.
99 *
100 * Error Print a tagged error message. The global
101 * MAKE variable must have been defined. This
102 * takes a format string and optional arguments
103 * for it.
104 *
105 * Fatal Print an error message and exit. Also takes
106 * a format string and arguments for it.
107 *
108 * Punt Aborts all jobs and exits with a message. Also
109 * takes a format string and arguments for it.
110 *
111 * Finish Finish things up by printing the number of
112 * errors which occurred, as passed to it, and
113 * exiting.
114 */
115
116 #include <sys/types.h>
117 #include <sys/time.h>
118 #include <sys/param.h>
119 #include <sys/resource.h>
120 #include <sys/stat.h>
121 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL)
122 #include <sys/sysctl.h>
123 #endif
124 #include <sys/utsname.h>
125 #include "wait.h"
126
127 #include <errno.h>
128 #include <fcntl.h>
129 #include <signal.h>
130 #include <stdarg.h>
131 #include <stdio.h>
132 #include <stdlib.h>
133 #include <time.h>
134 #include <ctype.h>
135
136 #include "make.h"
137 #include "hash.h"
138 #include "dir.h"
139 #include "job.h"
140 #include "pathnames.h"
141 #include "trace.h"
142
143 #ifdef USE_IOVEC
144 #include <sys/uio.h>
145 #endif
146
147 #ifndef DEFMAXLOCAL
148 #define DEFMAXLOCAL DEFMAXJOBS
149 #endif /* DEFMAXLOCAL */
150
151 #ifndef __arraycount
152 # define __arraycount(__x) (sizeof(__x) / sizeof(__x[0]))
153 #endif
154
155 Lst create; /* Targets to be made */
156 time_t now; /* Time at start of make */
157 GNode *DEFAULT; /* .DEFAULT node */
158 Boolean allPrecious; /* .PRECIOUS given on line by itself */
159
160 static Boolean noBuiltins; /* -r flag */
161 static Lst makefiles; /* ordered list of makefiles to read */
162 static Boolean printVars; /* print value of one or more vars */
163 static Lst variables; /* list of variables to print */
164 int maxJobs; /* -j argument */
165 static int maxJobTokens; /* -j argument */
166 Boolean compatMake; /* -B argument */
167 int debug; /* -d argument */
168 Boolean debugVflag; /* -dV */
169 Boolean noExecute; /* -n flag */
170 Boolean noRecursiveExecute; /* -N flag */
171 Boolean keepgoing; /* -k flag */
172 Boolean queryFlag; /* -q flag */
173 Boolean touchFlag; /* -t flag */
174 Boolean enterFlag; /* -w flag */
175 Boolean enterFlagObj; /* -w and objdir != srcdir */
176 Boolean ignoreErrors; /* -i flag */
177 Boolean beSilent; /* -s flag */
178 Boolean oldVars; /* variable substitution style */
179 Boolean checkEnvFirst; /* -e flag */
180 Boolean parseWarnFatal; /* -W flag */
181 Boolean jobServer; /* -J flag */
182 static int jp_0 = -1, jp_1 = -1; /* ends of parent job pipe */
183 Boolean varNoExportEnv; /* -X flag */
184 Boolean doing_depend; /* Set while reading .depend */
185 static Boolean jobsRunning; /* TRUE if the jobs might be running */
186 static const char * tracefile;
187 static void MainParseArgs(int, char **);
188 static int ReadMakefile(const void *, const void *);
189 static void usage(void) MAKE_ATTR_DEAD;
190
191 static Boolean ignorePWD; /* if we use -C, PWD is meaningless */
192 static char objdir[MAXPATHLEN + 1]; /* where we chdir'ed to */
193 char curdir[MAXPATHLEN + 1]; /* Startup directory */
194 char *progname; /* the program name */
195 char *makeDependfile;
196 pid_t myPid;
197 int makelevel;
198
199 Boolean forceJobs = FALSE;
200
201 /*
202 * On some systems MACHINE is defined as something other than
203 * what we want.
204 */
205 #ifdef FORCE_MACHINE
206 # undef MACHINE
207 # define MACHINE FORCE_MACHINE
208 #endif
209
210 extern Lst parseIncPath;
211
212 /*
213 * For compatibility with the POSIX version of MAKEFLAGS that includes
214 * all the options with out -, convert flags to -f -l -a -g -s.
215 */
216 static char *
explode(const char * flags)217 explode(const char *flags)
218 {
219 size_t len;
220 char *nf, *st;
221 const char *f;
222
223 if (flags == NULL)
224 return NULL;
225
226 for (f = flags; *f; f++)
227 if (!isalpha((unsigned char)*f))
228 break;
229
230 if (*f)
231 return bmake_strdup(flags);
232
233 len = strlen(flags);
234 st = nf = bmake_malloc(len * 3 + 1);
235 while (*flags) {
236 *nf++ = '-';
237 *nf++ = *flags++;
238 *nf++ = ' ';
239 }
240 *nf = '\0';
241 return st;
242 }
243
244 static void
parse_debug_options(const char * argvalue)245 parse_debug_options(const char *argvalue)
246 {
247 const char *modules;
248 const char *mode;
249 char *fname;
250 int len;
251
252 for (modules = argvalue; *modules; ++modules) {
253 switch (*modules) {
254 case 'A':
255 debug = ~0;
256 break;
257 case 'a':
258 debug |= DEBUG_ARCH;
259 break;
260 case 'C':
261 debug |= DEBUG_CWD;
262 break;
263 case 'c':
264 debug |= DEBUG_COND;
265 break;
266 case 'd':
267 debug |= DEBUG_DIR;
268 break;
269 case 'e':
270 debug |= DEBUG_ERROR;
271 break;
272 case 'f':
273 debug |= DEBUG_FOR;
274 break;
275 case 'g':
276 if (modules[1] == '1') {
277 debug |= DEBUG_GRAPH1;
278 ++modules;
279 }
280 else if (modules[1] == '2') {
281 debug |= DEBUG_GRAPH2;
282 ++modules;
283 }
284 else if (modules[1] == '3') {
285 debug |= DEBUG_GRAPH3;
286 ++modules;
287 }
288 break;
289 case 'j':
290 debug |= DEBUG_JOB;
291 break;
292 case 'l':
293 debug |= DEBUG_LOUD;
294 break;
295 case 'M':
296 debug |= DEBUG_META;
297 break;
298 case 'm':
299 debug |= DEBUG_MAKE;
300 break;
301 case 'n':
302 debug |= DEBUG_SCRIPT;
303 break;
304 case 'p':
305 debug |= DEBUG_PARSE;
306 break;
307 case 's':
308 debug |= DEBUG_SUFF;
309 break;
310 case 't':
311 debug |= DEBUG_TARG;
312 break;
313 case 'V':
314 debugVflag = TRUE;
315 break;
316 case 'v':
317 debug |= DEBUG_VAR;
318 break;
319 case 'x':
320 debug |= DEBUG_SHELL;
321 break;
322 case 'F':
323 if (debug_file != stdout && debug_file != stderr)
324 fclose(debug_file);
325 if (*++modules == '+') {
326 modules++;
327 mode = "a";
328 } else
329 mode = "w";
330 if (strcmp(modules, "stdout") == 0) {
331 debug_file = stdout;
332 goto debug_setbuf;
333 }
334 if (strcmp(modules, "stderr") == 0) {
335 debug_file = stderr;
336 goto debug_setbuf;
337 }
338 len = strlen(modules);
339 fname = malloc(len + 20);
340 memcpy(fname, modules, len + 1);
341 /* Let the filename be modified by the pid */
342 if (strcmp(fname + len - 3, ".%d") == 0)
343 snprintf(fname + len - 2, 20, "%d", getpid());
344 debug_file = fopen(fname, mode);
345 if (!debug_file) {
346 fprintf(stderr, "Cannot open debug file %s\n",
347 fname);
348 usage();
349 }
350 free(fname);
351 goto debug_setbuf;
352 default:
353 (void)fprintf(stderr,
354 "%s: illegal argument to d option -- %c\n",
355 progname, *modules);
356 usage();
357 }
358 }
359 debug_setbuf:
360 /*
361 * Make the debug_file unbuffered, and make
362 * stdout line buffered (unless debugfile == stdout).
363 */
364 setvbuf(debug_file, NULL, _IONBF, 0);
365 if (debug_file != stdout) {
366 setvbuf(stdout, NULL, _IOLBF, 0);
367 }
368 }
369
370 /*-
371 * MainParseArgs --
372 * Parse a given argument vector. Called from main() and from
373 * Main_ParseArgLine() when the .MAKEFLAGS target is used.
374 *
375 * XXX: Deal with command line overriding .MAKEFLAGS in makefile
376 *
377 * Results:
378 * None
379 *
380 * Side Effects:
381 * Various global and local flags will be set depending on the flags
382 * given
383 */
384 static void
MainParseArgs(int argc,char ** argv)385 MainParseArgs(int argc, char **argv)
386 {
387 char *p;
388 int c = '?';
389 int arginc;
390 char *argvalue;
391 const char *getopt_def;
392 char *optscan;
393 Boolean inOption, dashDash = FALSE;
394 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */
395
396 #define OPTFLAGS "BC:D:I:J:NST:V:WXd:ef:ij:km:nqrstw"
397 /* Can't actually use getopt(3) because rescanning is not portable */
398
399 getopt_def = OPTFLAGS;
400 rearg:
401 inOption = FALSE;
402 optscan = NULL;
403 while(argc > 1) {
404 char *getopt_spec;
405 if(!inOption)
406 optscan = argv[1];
407 c = *optscan++;
408 arginc = 0;
409 if(inOption) {
410 if(c == '\0') {
411 ++argv;
412 --argc;
413 inOption = FALSE;
414 continue;
415 }
416 } else {
417 if (c != '-' || dashDash)
418 break;
419 inOption = TRUE;
420 c = *optscan++;
421 }
422 /* '-' found at some earlier point */
423 getopt_spec = strchr(getopt_def, c);
424 if(c != '\0' && getopt_spec != NULL && getopt_spec[1] == ':') {
425 /* -<something> found, and <something> should have an arg */
426 inOption = FALSE;
427 arginc = 1;
428 argvalue = optscan;
429 if(*argvalue == '\0') {
430 if (argc < 3)
431 goto noarg;
432 argvalue = argv[2];
433 arginc = 2;
434 }
435 } else {
436 argvalue = NULL;
437 }
438 switch(c) {
439 case '\0':
440 arginc = 1;
441 inOption = FALSE;
442 break;
443 case 'B':
444 compatMake = TRUE;
445 Var_Append(MAKEFLAGS, "-B", VAR_GLOBAL);
446 Var_Set(MAKE_MODE, "compat", VAR_GLOBAL, 0);
447 break;
448 case 'C':
449 if (chdir(argvalue) == -1) {
450 (void)fprintf(stderr,
451 "%s: chdir %s: %s\n",
452 progname, argvalue,
453 strerror(errno));
454 exit(1);
455 }
456 if (getcwd(curdir, MAXPATHLEN) == NULL) {
457 (void)fprintf(stderr, "%s: %s.\n", progname, strerror(errno));
458 exit(2);
459 }
460 ignorePWD = TRUE;
461 break;
462 case 'D':
463 if (argvalue == NULL || argvalue[0] == 0) goto noarg;
464 Var_Set(argvalue, "1", VAR_GLOBAL, 0);
465 Var_Append(MAKEFLAGS, "-D", VAR_GLOBAL);
466 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
467 break;
468 case 'I':
469 if (argvalue == NULL) goto noarg;
470 Parse_AddIncludeDir(argvalue);
471 Var_Append(MAKEFLAGS, "-I", VAR_GLOBAL);
472 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
473 break;
474 case 'J':
475 if (argvalue == NULL) goto noarg;
476 if (sscanf(argvalue, "%d,%d", &jp_0, &jp_1) != 2) {
477 (void)fprintf(stderr,
478 "%s: internal error -- J option malformed (%s)\n",
479 progname, argvalue);
480 usage();
481 }
482 if ((fcntl(jp_0, F_GETFD, 0) < 0) ||
483 (fcntl(jp_1, F_GETFD, 0) < 0)) {
484 #if 0
485 (void)fprintf(stderr,
486 "%s: ###### warning -- J descriptors were closed!\n",
487 progname);
488 exit(2);
489 #endif
490 jp_0 = -1;
491 jp_1 = -1;
492 compatMake = TRUE;
493 } else {
494 Var_Append(MAKEFLAGS, "-J", VAR_GLOBAL);
495 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
496 jobServer = TRUE;
497 }
498 break;
499 case 'N':
500 noExecute = TRUE;
501 noRecursiveExecute = TRUE;
502 Var_Append(MAKEFLAGS, "-N", VAR_GLOBAL);
503 break;
504 case 'S':
505 keepgoing = FALSE;
506 Var_Append(MAKEFLAGS, "-S", VAR_GLOBAL);
507 break;
508 case 'T':
509 if (argvalue == NULL) goto noarg;
510 tracefile = bmake_strdup(argvalue);
511 Var_Append(MAKEFLAGS, "-T", VAR_GLOBAL);
512 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
513 break;
514 case 'V':
515 if (argvalue == NULL) goto noarg;
516 printVars = TRUE;
517 (void)Lst_AtEnd(variables, argvalue);
518 Var_Append(MAKEFLAGS, "-V", VAR_GLOBAL);
519 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
520 break;
521 case 'W':
522 parseWarnFatal = TRUE;
523 break;
524 case 'X':
525 varNoExportEnv = TRUE;
526 Var_Append(MAKEFLAGS, "-X", VAR_GLOBAL);
527 break;
528 case 'd':
529 if (argvalue == NULL) goto noarg;
530 /* If '-d-opts' don't pass to children */
531 if (argvalue[0] == '-')
532 argvalue++;
533 else {
534 Var_Append(MAKEFLAGS, "-d", VAR_GLOBAL);
535 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
536 }
537 parse_debug_options(argvalue);
538 break;
539 case 'e':
540 checkEnvFirst = TRUE;
541 Var_Append(MAKEFLAGS, "-e", VAR_GLOBAL);
542 break;
543 case 'f':
544 if (argvalue == NULL) goto noarg;
545 (void)Lst_AtEnd(makefiles, argvalue);
546 break;
547 case 'i':
548 ignoreErrors = TRUE;
549 Var_Append(MAKEFLAGS, "-i", VAR_GLOBAL);
550 break;
551 case 'j':
552 if (argvalue == NULL) goto noarg;
553 forceJobs = TRUE;
554 maxJobs = strtol(argvalue, &p, 0);
555 if (*p != '\0' || maxJobs < 1) {
556 (void)fprintf(stderr, "%s: illegal argument to -j -- must be positive integer!\n",
557 progname);
558 exit(1);
559 }
560 Var_Append(MAKEFLAGS, "-j", VAR_GLOBAL);
561 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
562 Var_Set(".MAKE.JOBS", argvalue, VAR_GLOBAL, 0);
563 maxJobTokens = maxJobs;
564 break;
565 case 'k':
566 keepgoing = TRUE;
567 Var_Append(MAKEFLAGS, "-k", VAR_GLOBAL);
568 break;
569 case 'm':
570 if (argvalue == NULL) goto noarg;
571 /* look for magic parent directory search string */
572 if (strncmp(".../", argvalue, 4) == 0) {
573 if (!Dir_FindHereOrAbove(curdir, argvalue+4,
574 found_path, sizeof(found_path)))
575 break; /* nothing doing */
576 (void)Dir_AddDir(sysIncPath, found_path);
577 } else {
578 (void)Dir_AddDir(sysIncPath, argvalue);
579 }
580 Var_Append(MAKEFLAGS, "-m", VAR_GLOBAL);
581 Var_Append(MAKEFLAGS, argvalue, VAR_GLOBAL);
582 break;
583 case 'n':
584 noExecute = TRUE;
585 Var_Append(MAKEFLAGS, "-n", VAR_GLOBAL);
586 break;
587 case 'q':
588 queryFlag = TRUE;
589 /* Kind of nonsensical, wot? */
590 Var_Append(MAKEFLAGS, "-q", VAR_GLOBAL);
591 break;
592 case 'r':
593 noBuiltins = TRUE;
594 Var_Append(MAKEFLAGS, "-r", VAR_GLOBAL);
595 break;
596 case 's':
597 beSilent = TRUE;
598 Var_Append(MAKEFLAGS, "-s", VAR_GLOBAL);
599 break;
600 case 't':
601 touchFlag = TRUE;
602 Var_Append(MAKEFLAGS, "-t", VAR_GLOBAL);
603 break;
604 case 'w':
605 enterFlag = TRUE;
606 Var_Append(MAKEFLAGS, "-w", VAR_GLOBAL);
607 break;
608 case '-':
609 dashDash = TRUE;
610 break;
611 default:
612 case '?':
613 #ifndef MAKE_NATIVE
614 fprintf(stderr, "getopt(%s) -> %d (%c)\n",
615 OPTFLAGS, c, c);
616 #endif
617 usage();
618 }
619 argv += arginc;
620 argc -= arginc;
621 }
622
623 oldVars = TRUE;
624
625 /*
626 * See if the rest of the arguments are variable assignments and
627 * perform them if so. Else take them to be targets and stuff them
628 * on the end of the "create" list.
629 */
630 for (; argc > 1; ++argv, --argc)
631 if (Parse_IsVar(argv[1])) {
632 Parse_DoVar(argv[1], VAR_CMD);
633 } else {
634 if (!*argv[1])
635 Punt("illegal (null) argument.");
636 if (*argv[1] == '-' && !dashDash)
637 goto rearg;
638 (void)Lst_AtEnd(create, bmake_strdup(argv[1]));
639 }
640
641 return;
642 noarg:
643 (void)fprintf(stderr, "%s: option requires an argument -- %c\n",
644 progname, c);
645 usage();
646 }
647
648 /*-
649 * Main_ParseArgLine --
650 * Used by the parse module when a .MFLAGS or .MAKEFLAGS target
651 * is encountered and by main() when reading the .MAKEFLAGS envariable.
652 * Takes a line of arguments and breaks it into its
653 * component words and passes those words and the number of them to the
654 * MainParseArgs function.
655 * The line should have all its leading whitespace removed.
656 *
657 * Input:
658 * line Line to fracture
659 *
660 * Results:
661 * None
662 *
663 * Side Effects:
664 * Only those that come from the various arguments.
665 */
666 void
Main_ParseArgLine(const char * line)667 Main_ParseArgLine(const char *line)
668 {
669 char **argv; /* Manufactured argument vector */
670 int argc; /* Number of arguments in argv */
671 char *args; /* Space used by the args */
672 char *buf, *p1;
673 char *argv0 = Var_Value(".MAKE", VAR_GLOBAL, &p1);
674 size_t len;
675
676 if (line == NULL)
677 return;
678 for (; *line == ' '; ++line)
679 continue;
680 if (!*line)
681 return;
682
683 #ifndef POSIX
684 {
685 /*
686 * $MAKE may simply be naming the make(1) binary
687 */
688 char *cp;
689
690 if (!(cp = strrchr(line, '/')))
691 cp = line;
692 if ((cp = strstr(cp, "make")) &&
693 strcmp(cp, "make") == 0)
694 return;
695 }
696 #endif
697 buf = bmake_malloc(len = strlen(line) + strlen(argv0) + 2);
698 (void)snprintf(buf, len, "%s %s", argv0, line);
699 if (p1)
700 free(p1);
701
702 argv = brk_string(buf, &argc, TRUE, &args);
703 if (argv == NULL) {
704 Error("Unterminated quoted string [%s]", buf);
705 free(buf);
706 return;
707 }
708 free(buf);
709 MainParseArgs(argc, argv);
710
711 free(args);
712 free(argv);
713 }
714
715 Boolean
Main_SetObjdir(const char * path)716 Main_SetObjdir(const char *path)
717 {
718 struct stat sb;
719 char *p = NULL;
720 char buf[MAXPATHLEN + 1];
721 Boolean rc = FALSE;
722
723 /* expand variable substitutions */
724 if (strchr(path, '$') != 0) {
725 snprintf(buf, MAXPATHLEN, "%s", path);
726 path = p = Var_Subst(NULL, buf, VAR_GLOBAL, FALSE, TRUE);
727 }
728
729 if (path[0] != '/') {
730 snprintf(buf, MAXPATHLEN, "%s/%s", curdir, path);
731 path = buf;
732 }
733
734 /* look for the directory and try to chdir there */
735 if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) {
736 if (chdir(path)) {
737 (void)fprintf(stderr, "make warning: %s: %s.\n",
738 path, strerror(errno));
739 } else {
740 strncpy(objdir, path, MAXPATHLEN);
741 Var_Set(".OBJDIR", objdir, VAR_GLOBAL, 0);
742 setenv("PWD", objdir, 1);
743 Dir_InitDot();
744 rc = TRUE;
745 if (enterFlag && strcmp(objdir, curdir) != 0)
746 enterFlagObj = TRUE;
747 }
748 }
749
750 if (p)
751 free(p);
752 return rc;
753 }
754
755 /*-
756 * ReadAllMakefiles --
757 * wrapper around ReadMakefile() to read all.
758 *
759 * Results:
760 * TRUE if ok, FALSE on error
761 */
762 static int
ReadAllMakefiles(const void * p,const void * q)763 ReadAllMakefiles(const void *p, const void *q)
764 {
765 return (ReadMakefile(p, q) == 0);
766 }
767
768 int
str2Lst_Append(Lst lp,char * str,const char * sep)769 str2Lst_Append(Lst lp, char *str, const char *sep)
770 {
771 char *cp;
772 int n;
773
774 if (!sep)
775 sep = " \t";
776
777 for (n = 0, cp = strtok(str, sep); cp; cp = strtok(NULL, sep)) {
778 (void)Lst_AtEnd(lp, cp);
779 n++;
780 }
781 return (n);
782 }
783
784 #ifdef SIGINFO
785 /*ARGSUSED*/
786 static void
siginfo(int signo MAKE_ATTR_UNUSED)787 siginfo(int signo MAKE_ATTR_UNUSED)
788 {
789 char dir[MAXPATHLEN];
790 char str[2 * MAXPATHLEN];
791 int len;
792 if (getcwd(dir, sizeof(dir)) == NULL)
793 return;
794 len = snprintf(str, sizeof(str), "%s: Working in: %s\n", progname, dir);
795 if (len > 0)
796 (void)write(STDERR_FILENO, str, (size_t)len);
797 }
798 #endif
799
800 /*
801 * Allow makefiles some control over the mode we run in.
802 */
803 void
MakeMode(const char * mode)804 MakeMode(const char *mode)
805 {
806 char *mp = NULL;
807
808 if (!mode)
809 mode = mp = Var_Subst(NULL, "${" MAKE_MODE ":tl}",
810 VAR_GLOBAL, FALSE, TRUE);
811
812 if (mode && *mode) {
813 if (strstr(mode, "compat")) {
814 compatMake = TRUE;
815 forceJobs = FALSE;
816 }
817 #if USE_META
818 if (strstr(mode, "meta"))
819 meta_mode_init(mode);
820 #endif
821 }
822 if (mp)
823 free(mp);
824 }
825
826 /*-
827 * main --
828 * The main function, for obvious reasons. Initializes variables
829 * and a few modules, then parses the arguments give it in the
830 * environment and on the command line. Reads the system makefile
831 * followed by either Makefile, makefile or the file given by the
832 * -f argument. Sets the .MAKEFLAGS PMake variable based on all the
833 * flags it has received by then uses either the Make or the Compat
834 * module to create the initial list of targets.
835 *
836 * Results:
837 * If -q was given, exits -1 if anything was out-of-date. Else it exits
838 * 0.
839 *
840 * Side Effects:
841 * The program exits when done. Targets are created. etc. etc. etc.
842 */
843 int
main(int argc,char ** argv)844 main(int argc, char **argv)
845 {
846 Lst targs; /* target nodes to create -- passed to Make_Init */
847 Boolean outOfDate = FALSE; /* FALSE if all targets up to date */
848 struct stat sb, sa;
849 char *p1, *path;
850 char mdpath[MAXPATHLEN];
851 #ifdef FORCE_MACHINE
852 const char *machine = FORCE_MACHINE;
853 #else
854 const char *machine = getenv("MACHINE");
855 #endif
856 const char *machine_arch = getenv("MACHINE_ARCH");
857 char *syspath = getenv("MAKESYSPATH");
858 Lst sysMkPath; /* Path of sys.mk */
859 char *cp = NULL, *start;
860 /* avoid faults on read-only strings */
861 static char defsyspath[] = _PATH_DEFSYSPATH;
862 char found_path[MAXPATHLEN + 1]; /* for searching for sys.mk */
863 struct timeval rightnow; /* to initialize random seed */
864 struct utsname utsname;
865
866 /* default to writing debug to stderr */
867 debug_file = stderr;
868
869 #ifdef SIGINFO
870 (void)bmake_signal(SIGINFO, siginfo);
871 #endif
872 /*
873 * Set the seed to produce a different random sequence
874 * on each program execution.
875 */
876 gettimeofday(&rightnow, NULL);
877 srandom(rightnow.tv_sec + rightnow.tv_usec);
878
879 if ((progname = strrchr(argv[0], '/')) != NULL)
880 progname++;
881 else
882 progname = argv[0];
883 #if defined(MAKE_NATIVE) || (defined(HAVE_SETRLIMIT) && defined(RLIMIT_NOFILE))
884 /*
885 * get rid of resource limit on file descriptors
886 */
887 {
888 struct rlimit rl;
889 if (getrlimit(RLIMIT_NOFILE, &rl) != -1 &&
890 rl.rlim_cur != rl.rlim_max) {
891 rl.rlim_cur = rl.rlim_max;
892 (void)setrlimit(RLIMIT_NOFILE, &rl);
893 }
894 }
895 #endif
896
897 if (uname(&utsname) == -1) {
898 (void)fprintf(stderr, "%s: uname failed (%s).\n", progname,
899 strerror(errno));
900 exit(2);
901 }
902
903 /*
904 * Get the name of this type of MACHINE from utsname
905 * so we can share an executable for similar machines.
906 * (i.e. m68k: amiga hp300, mac68k, sun3, ...)
907 *
908 * Note that both MACHINE and MACHINE_ARCH are decided at
909 * run-time.
910 */
911 if (!machine) {
912 #ifdef MAKE_NATIVE
913 machine = utsname.machine;
914 #else
915 #ifdef MAKE_MACHINE
916 machine = MAKE_MACHINE;
917 #else
918 machine = "unknown";
919 #endif
920 #endif
921 }
922
923 if (!machine_arch) {
924 #if defined(MAKE_NATIVE) && defined(HAVE_SYSCTL) && defined(CTL_HW) && defined(HW_MACHINE_ARCH)
925 static char machine_arch_buf[sizeof(utsname.machine)];
926 int mib[2] = { CTL_HW, HW_MACHINE_ARCH };
927 size_t len = sizeof(machine_arch_buf);
928
929 if (sysctl(mib, __arraycount(mib), machine_arch_buf,
930 &len, NULL, 0) < 0) {
931 (void)fprintf(stderr, "%s: sysctl failed (%s).\n", progname,
932 strerror(errno));
933 exit(2);
934 }
935
936 machine_arch = machine_arch_buf;
937 #else
938 #ifndef MACHINE_ARCH
939 #ifdef MAKE_MACHINE_ARCH
940 machine_arch = MAKE_MACHINE_ARCH;
941 #else
942 machine_arch = "unknown";
943 #endif
944 #else
945 machine_arch = MACHINE_ARCH;
946 #endif
947 #endif
948 }
949
950 myPid = getpid(); /* remember this for vFork() */
951
952 /*
953 * Just in case MAKEOBJDIR wants us to do something tricky.
954 */
955 Var_Init(); /* Initialize the lists of variables for
956 * parsing arguments */
957 Var_Set(".MAKE.OS", utsname.sysname, VAR_GLOBAL, 0);
958 Var_Set("MACHINE", machine, VAR_GLOBAL, 0);
959 Var_Set("MACHINE_ARCH", machine_arch, VAR_GLOBAL, 0);
960 #ifdef MAKE_VERSION
961 Var_Set("MAKE_VERSION", MAKE_VERSION, VAR_GLOBAL, 0);
962 #endif
963 Var_Set(".newline", "\n", VAR_GLOBAL, 0); /* handy for :@ loops */
964 /*
965 * This is the traditional preference for makefiles.
966 */
967 #ifndef MAKEFILE_PREFERENCE_LIST
968 # define MAKEFILE_PREFERENCE_LIST "makefile Makefile"
969 #endif
970 Var_Set(MAKEFILE_PREFERENCE, MAKEFILE_PREFERENCE_LIST,
971 VAR_GLOBAL, 0);
972 Var_Set(MAKE_DEPENDFILE, ".depend", VAR_GLOBAL, 0);
973
974 create = Lst_Init(FALSE);
975 makefiles = Lst_Init(FALSE);
976 printVars = FALSE;
977 debugVflag = FALSE;
978 variables = Lst_Init(FALSE);
979 beSilent = FALSE; /* Print commands as executed */
980 ignoreErrors = FALSE; /* Pay attention to non-zero returns */
981 noExecute = FALSE; /* Execute all commands */
982 noRecursiveExecute = FALSE; /* Execute all .MAKE targets */
983 keepgoing = FALSE; /* Stop on error */
984 allPrecious = FALSE; /* Remove targets when interrupted */
985 queryFlag = FALSE; /* This is not just a check-run */
986 noBuiltins = FALSE; /* Read the built-in rules */
987 touchFlag = FALSE; /* Actually update targets */
988 debug = 0; /* No debug verbosity, please. */
989 jobsRunning = FALSE;
990
991 maxJobs = DEFMAXLOCAL; /* Set default local max concurrency */
992 maxJobTokens = maxJobs;
993 compatMake = FALSE; /* No compat mode */
994 ignorePWD = FALSE;
995
996 /*
997 * Initialize the parsing, directory and variable modules to prepare
998 * for the reading of inclusion paths and variable settings on the
999 * command line
1000 */
1001
1002 /*
1003 * Initialize various variables.
1004 * MAKE also gets this name, for compatibility
1005 * .MAKEFLAGS gets set to the empty string just in case.
1006 * MFLAGS also gets initialized empty, for compatibility.
1007 */
1008 Parse_Init();
1009 if (argv[0][0] == '/' || strchr(argv[0], '/') == NULL) {
1010 /*
1011 * Leave alone if it is an absolute path, or if it does
1012 * not contain a '/' in which case we need to find it in
1013 * the path, like execvp(3) and the shells do.
1014 */
1015 p1 = argv[0];
1016 } else {
1017 /*
1018 * A relative path, canonicalize it.
1019 */
1020 p1 = realpath(argv[0], mdpath);
1021 if (!p1 || *p1 != '/' || stat(p1, &sb) < 0) {
1022 p1 = argv[0]; /* realpath failed */
1023 }
1024 }
1025 Var_Set("MAKE", p1, VAR_GLOBAL, 0);
1026 Var_Set(".MAKE", p1, VAR_GLOBAL, 0);
1027 Var_Set(MAKEFLAGS, "", VAR_GLOBAL, 0);
1028 Var_Set(MAKEOVERRIDES, "", VAR_GLOBAL, 0);
1029 Var_Set("MFLAGS", "", VAR_GLOBAL, 0);
1030 Var_Set(".ALLTARGETS", "", VAR_GLOBAL, 0);
1031 /* some makefiles need to know this */
1032 Var_Set(MAKE_LEVEL ".ENV", MAKE_LEVEL_ENV, VAR_CMD, 0);
1033
1034 /*
1035 * Set some other useful macros
1036 */
1037 {
1038 char tmp[64], *ep;
1039
1040 makelevel = ((ep = getenv(MAKE_LEVEL_ENV)) && *ep) ? atoi(ep) : 0;
1041 if (makelevel < 0)
1042 makelevel = 0;
1043 snprintf(tmp, sizeof(tmp), "%d", makelevel);
1044 Var_Set(MAKE_LEVEL, tmp, VAR_GLOBAL, 0);
1045 snprintf(tmp, sizeof(tmp), "%u", myPid);
1046 Var_Set(".MAKE.PID", tmp, VAR_GLOBAL, 0);
1047 snprintf(tmp, sizeof(tmp), "%u", getppid());
1048 Var_Set(".MAKE.PPID", tmp, VAR_GLOBAL, 0);
1049 }
1050 if (makelevel > 0) {
1051 char pn[1024];
1052 snprintf(pn, sizeof(pn), "%s[%d]", progname, makelevel);
1053 progname = bmake_strdup(pn);
1054 }
1055
1056 #ifdef USE_META
1057 meta_init();
1058 #endif
1059 /*
1060 * First snag any flags out of the MAKE environment variable.
1061 * (Note this is *not* MAKEFLAGS since /bin/make uses that and it's
1062 * in a different format).
1063 */
1064 #ifdef POSIX
1065 p1 = explode(getenv("MAKEFLAGS"));
1066 Main_ParseArgLine(p1);
1067 free(p1);
1068 #else
1069 Main_ParseArgLine(getenv("MAKE"));
1070 #endif
1071
1072 /*
1073 * Find where we are (now).
1074 * We take care of PWD for the automounter below...
1075 */
1076 if (getcwd(curdir, MAXPATHLEN) == NULL) {
1077 (void)fprintf(stderr, "%s: getcwd: %s.\n",
1078 progname, strerror(errno));
1079 exit(2);
1080 }
1081
1082 MainParseArgs(argc, argv);
1083
1084 if (enterFlag)
1085 printf("%s: Entering directory `%s'\n", progname, curdir);
1086
1087 /*
1088 * Verify that cwd is sane.
1089 */
1090 if (stat(curdir, &sa) == -1) {
1091 (void)fprintf(stderr, "%s: %s: %s.\n",
1092 progname, curdir, strerror(errno));
1093 exit(2);
1094 }
1095
1096 /*
1097 * All this code is so that we know where we are when we start up
1098 * on a different machine with pmake.
1099 * Overriding getcwd() with $PWD totally breaks MAKEOBJDIRPREFIX
1100 * since the value of curdir can vary depending on how we got
1101 * here. Ie sitting at a shell prompt (shell that provides $PWD)
1102 * or via subdir.mk in which case its likely a shell which does
1103 * not provide it.
1104 * So, to stop it breaking this case only, we ignore PWD if
1105 * MAKEOBJDIRPREFIX is set or MAKEOBJDIR contains a transform.
1106 */
1107 #ifndef NO_PWD_OVERRIDE
1108 if (!ignorePWD) {
1109 char *pwd, *ptmp1 = NULL, *ptmp2 = NULL;
1110
1111 if ((pwd = getenv("PWD")) != NULL &&
1112 Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &ptmp1) == NULL) {
1113 const char *makeobjdir = Var_Value("MAKEOBJDIR",
1114 VAR_CMD, &ptmp2);
1115
1116 if (makeobjdir == NULL || !strchr(makeobjdir, '$')) {
1117 if (stat(pwd, &sb) == 0 &&
1118 sa.st_ino == sb.st_ino &&
1119 sa.st_dev == sb.st_dev)
1120 (void)strncpy(curdir, pwd, MAXPATHLEN);
1121 }
1122 }
1123 free(ptmp1);
1124 free(ptmp2);
1125 }
1126 #endif
1127 Var_Set(".CURDIR", curdir, VAR_GLOBAL, 0);
1128
1129 /*
1130 * Find the .OBJDIR. If MAKEOBJDIRPREFIX, or failing that,
1131 * MAKEOBJDIR is set in the environment, try only that value
1132 * and fall back to .CURDIR if it does not exist.
1133 *
1134 * Otherwise, try _PATH_OBJDIR.MACHINE, _PATH_OBJDIR, and
1135 * finally _PATH_OBJDIRPREFIX`pwd`, in that order. If none
1136 * of these paths exist, just use .CURDIR.
1137 */
1138 Dir_Init(curdir);
1139 (void)Main_SetObjdir(curdir);
1140
1141 if ((path = Var_Value("MAKEOBJDIRPREFIX", VAR_CMD, &p1)) != NULL) {
1142 (void)snprintf(mdpath, MAXPATHLEN, "%s%s", path, curdir);
1143 (void)Main_SetObjdir(mdpath);
1144 free(p1);
1145 } else if ((path = Var_Value("MAKEOBJDIR", VAR_CMD, &p1)) != NULL) {
1146 (void)Main_SetObjdir(path);
1147 free(p1);
1148 } else {
1149 (void)snprintf(mdpath, MAXPATHLEN, "%s.%s", _PATH_OBJDIR, machine);
1150 if (!Main_SetObjdir(mdpath) && !Main_SetObjdir(_PATH_OBJDIR)) {
1151 (void)snprintf(mdpath, MAXPATHLEN, "%s%s",
1152 _PATH_OBJDIRPREFIX, curdir);
1153 (void)Main_SetObjdir(mdpath);
1154 }
1155 }
1156
1157 /*
1158 * Be compatible if user did not specify -j and did not explicitly
1159 * turned compatibility on
1160 */
1161 if (!compatMake && !forceJobs) {
1162 compatMake = TRUE;
1163 }
1164
1165 /*
1166 * Initialize archive, target and suffix modules in preparation for
1167 * parsing the makefile(s)
1168 */
1169 Arch_Init();
1170 Targ_Init();
1171 Suff_Init();
1172 Trace_Init(tracefile);
1173
1174 DEFAULT = NULL;
1175 (void)time(&now);
1176
1177 Trace_Log(MAKESTART, NULL);
1178
1179 /*
1180 * Set up the .TARGETS variable to contain the list of targets to be
1181 * created. If none specified, make the variable empty -- the parser
1182 * will fill the thing in with the default or .MAIN target.
1183 */
1184 if (!Lst_IsEmpty(create)) {
1185 LstNode ln;
1186
1187 for (ln = Lst_First(create); ln != NULL;
1188 ln = Lst_Succ(ln)) {
1189 char *name = (char *)Lst_Datum(ln);
1190
1191 Var_Append(".TARGETS", name, VAR_GLOBAL);
1192 }
1193 } else
1194 Var_Set(".TARGETS", "", VAR_GLOBAL, 0);
1195
1196
1197 /*
1198 * If no user-supplied system path was given (through the -m option)
1199 * add the directories from the DEFSYSPATH (more than one may be given
1200 * as dir1:...:dirn) to the system include path.
1201 */
1202 if (syspath == NULL || *syspath == '\0')
1203 syspath = defsyspath;
1204 else
1205 syspath = bmake_strdup(syspath);
1206
1207 for (start = syspath; *start != '\0'; start = cp) {
1208 for (cp = start; *cp != '\0' && *cp != ':'; cp++)
1209 continue;
1210 if (*cp == ':') {
1211 *cp++ = '\0';
1212 }
1213 /* look for magic parent directory search string */
1214 if (strncmp(".../", start, 4) != 0) {
1215 (void)Dir_AddDir(defIncPath, start);
1216 } else {
1217 if (Dir_FindHereOrAbove(curdir, start+4,
1218 found_path, sizeof(found_path))) {
1219 (void)Dir_AddDir(defIncPath, found_path);
1220 }
1221 }
1222 }
1223 if (syspath != defsyspath)
1224 free(syspath);
1225
1226 /*
1227 * Read in the built-in rules first, followed by the specified
1228 * makefile, if it was (makefile != NULL), or the default
1229 * makefile and Makefile, in that order, if it wasn't.
1230 */
1231 if (!noBuiltins) {
1232 LstNode ln;
1233
1234 sysMkPath = Lst_Init(FALSE);
1235 Dir_Expand(_PATH_DEFSYSMK,
1236 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath,
1237 sysMkPath);
1238 if (Lst_IsEmpty(sysMkPath))
1239 Fatal("%s: no system rules (%s).", progname,
1240 _PATH_DEFSYSMK);
1241 ln = Lst_Find(sysMkPath, NULL, ReadMakefile);
1242 if (ln == NULL)
1243 Fatal("%s: cannot open %s.", progname,
1244 (char *)Lst_Datum(ln));
1245 }
1246
1247 if (!Lst_IsEmpty(makefiles)) {
1248 LstNode ln;
1249
1250 ln = Lst_Find(makefiles, NULL, ReadAllMakefiles);
1251 if (ln != NULL)
1252 Fatal("%s: cannot open %s.", progname,
1253 (char *)Lst_Datum(ln));
1254 } else {
1255 p1 = Var_Subst(NULL, "${" MAKEFILE_PREFERENCE "}",
1256 VAR_CMD, FALSE, TRUE);
1257 if (p1) {
1258 (void)str2Lst_Append(makefiles, p1, NULL);
1259 (void)Lst_Find(makefiles, NULL, ReadMakefile);
1260 free(p1);
1261 }
1262 }
1263
1264 /* In particular suppress .depend for '-r -V .OBJDIR -f /dev/null' */
1265 if (!noBuiltins || !printVars) {
1266 makeDependfile = Var_Subst(NULL, "${.MAKE.DEPENDFILE:T}",
1267 VAR_CMD, FALSE, TRUE);
1268 doing_depend = TRUE;
1269 (void)ReadMakefile(makeDependfile, NULL);
1270 doing_depend = FALSE;
1271 }
1272
1273 if (enterFlagObj)
1274 printf("%s: Entering directory `%s'\n", progname, objdir);
1275
1276 MakeMode(NULL);
1277
1278 Var_Append("MFLAGS", Var_Value(MAKEFLAGS, VAR_GLOBAL, &p1), VAR_GLOBAL);
1279 if (p1)
1280 free(p1);
1281
1282 if (!compatMake)
1283 Job_ServerStart(maxJobTokens, jp_0, jp_1);
1284 if (DEBUG(JOB))
1285 fprintf(debug_file, "job_pipe %d %d, maxjobs %d, tokens %d, compat %d\n",
1286 jp_0, jp_1, maxJobs, maxJobTokens, compatMake);
1287
1288 Main_ExportMAKEFLAGS(TRUE); /* initial export */
1289
1290 /*
1291 * For compatibility, look at the directories in the VPATH variable
1292 * and add them to the search path, if the variable is defined. The
1293 * variable's value is in the same format as the PATH envariable, i.e.
1294 * <directory>:<directory>:<directory>...
1295 */
1296 if (Var_Exists("VPATH", VAR_CMD)) {
1297 char *vpath, savec;
1298 /*
1299 * GCC stores string constants in read-only memory, but
1300 * Var_Subst will want to write this thing, so store it
1301 * in an array
1302 */
1303 static char VPATH[] = "${VPATH}";
1304
1305 vpath = Var_Subst(NULL, VPATH, VAR_CMD, FALSE, TRUE);
1306 path = vpath;
1307 do {
1308 /* skip to end of directory */
1309 for (cp = path; *cp != ':' && *cp != '\0'; cp++)
1310 continue;
1311 /* Save terminator character so know when to stop */
1312 savec = *cp;
1313 *cp = '\0';
1314 /* Add directory to search path */
1315 (void)Dir_AddDir(dirSearchPath, path);
1316 *cp = savec;
1317 path = cp + 1;
1318 } while (savec == ':');
1319 free(vpath);
1320 }
1321
1322 /*
1323 * Now that all search paths have been read for suffixes et al, it's
1324 * time to add the default search path to their lists...
1325 */
1326 Suff_DoPaths();
1327
1328 /*
1329 * Propagate attributes through :: dependency lists.
1330 */
1331 Targ_Propagate();
1332
1333 /* print the initial graph, if the user requested it */
1334 if (DEBUG(GRAPH1))
1335 Targ_PrintGraph(1);
1336
1337 /* print the values of any variables requested by the user */
1338 if (printVars) {
1339 LstNode ln;
1340 Boolean expandVars;
1341
1342 if (debugVflag)
1343 expandVars = FALSE;
1344 else
1345 expandVars = getBoolean(".MAKE.EXPAND_VARIABLES", FALSE);
1346 for (ln = Lst_First(variables); ln != NULL;
1347 ln = Lst_Succ(ln)) {
1348 char *var = (char *)Lst_Datum(ln);
1349 char *value;
1350
1351 if (strchr(var, '$')) {
1352 value = p1 = Var_Subst(NULL, var, VAR_GLOBAL,
1353 FALSE, TRUE);
1354 } else if (expandVars) {
1355 char tmp[128];
1356
1357 if (snprintf(tmp, sizeof(tmp), "${%s}", var) >= (int)(sizeof(tmp)))
1358 Fatal("%s: variable name too big: %s",
1359 progname, var);
1360 value = p1 = Var_Subst(NULL, tmp, VAR_GLOBAL,
1361 FALSE, TRUE);
1362 } else {
1363 value = Var_Value(var, VAR_GLOBAL, &p1);
1364 }
1365 printf("%s\n", value ? value : "");
1366 if (p1)
1367 free(p1);
1368 }
1369 } else {
1370 /*
1371 * Have now read the entire graph and need to make a list of
1372 * targets to create. If none was given on the command line,
1373 * we consult the parsing module to find the main target(s)
1374 * to create.
1375 */
1376 if (Lst_IsEmpty(create))
1377 targs = Parse_MainName();
1378 else
1379 targs = Targ_FindList(create, TARG_CREATE);
1380
1381 if (!compatMake) {
1382 /*
1383 * Initialize job module before traversing the graph
1384 * now that any .BEGIN and .END targets have been read.
1385 * This is done only if the -q flag wasn't given
1386 * (to prevent the .BEGIN from being executed should
1387 * it exist).
1388 */
1389 if (!queryFlag) {
1390 Job_Init();
1391 jobsRunning = TRUE;
1392 }
1393
1394 /* Traverse the graph, checking on all the targets */
1395 outOfDate = Make_Run(targs);
1396 } else {
1397 /*
1398 * Compat_Init will take care of creating all the
1399 * targets as well as initializing the module.
1400 */
1401 Compat_Run(targs);
1402 }
1403 }
1404
1405 #ifdef CLEANUP
1406 Lst_Destroy(targs, NULL);
1407 Lst_Destroy(variables, NULL);
1408 Lst_Destroy(makefiles, NULL);
1409 Lst_Destroy(create, (FreeProc *)free);
1410 #endif
1411
1412 /* print the graph now it's been processed if the user requested it */
1413 if (DEBUG(GRAPH2))
1414 Targ_PrintGraph(2);
1415
1416 Trace_Log(MAKEEND, 0);
1417
1418 if (enterFlagObj)
1419 printf("%s: Leaving directory `%s'\n", progname, objdir);
1420 if (enterFlag)
1421 printf("%s: Leaving directory `%s'\n", progname, curdir);
1422
1423 Suff_End();
1424 Targ_End();
1425 Arch_End();
1426 Var_End();
1427 Parse_End();
1428 Dir_End();
1429 Job_End();
1430 Trace_End();
1431
1432 return outOfDate ? 1 : 0;
1433 }
1434
1435 /*-
1436 * ReadMakefile --
1437 * Open and parse the given makefile.
1438 *
1439 * Results:
1440 * 0 if ok. -1 if couldn't open file.
1441 *
1442 * Side Effects:
1443 * lots
1444 */
1445 static int
ReadMakefile(const void * p,const void * q MAKE_ATTR_UNUSED)1446 ReadMakefile(const void *p, const void *q MAKE_ATTR_UNUSED)
1447 {
1448 const char *fname = p; /* makefile to read */
1449 int fd;
1450 size_t len = MAXPATHLEN;
1451 char *name, *path = bmake_malloc(len);
1452
1453 if (!strcmp(fname, "-")) {
1454 Parse_File(NULL /*stdin*/, -1);
1455 Var_Set("MAKEFILE", "", VAR_INTERNAL, 0);
1456 } else {
1457 /* if we've chdir'd, rebuild the path name */
1458 if (strcmp(curdir, objdir) && *fname != '/') {
1459 size_t plen = strlen(curdir) + strlen(fname) + 2;
1460 if (len < plen)
1461 path = bmake_realloc(path, len = 2 * plen);
1462
1463 (void)snprintf(path, len, "%s/%s", curdir, fname);
1464 fd = open(path, O_RDONLY);
1465 if (fd != -1) {
1466 fname = path;
1467 goto found;
1468 }
1469
1470 /* If curdir failed, try objdir (ala .depend) */
1471 plen = strlen(objdir) + strlen(fname) + 2;
1472 if (len < plen)
1473 path = bmake_realloc(path, len = 2 * plen);
1474 (void)snprintf(path, len, "%s/%s", objdir, fname);
1475 fd = open(path, O_RDONLY);
1476 if (fd != -1) {
1477 fname = path;
1478 goto found;
1479 }
1480 } else {
1481 fd = open(fname, O_RDONLY);
1482 if (fd != -1)
1483 goto found;
1484 }
1485 /* look in -I and system include directories. */
1486 name = Dir_FindFile(fname, parseIncPath);
1487 if (!name)
1488 name = Dir_FindFile(fname,
1489 Lst_IsEmpty(sysIncPath) ? defIncPath : sysIncPath);
1490 if (!name || (fd = open(name, O_RDONLY)) == -1) {
1491 if (name)
1492 free(name);
1493 free(path);
1494 return(-1);
1495 }
1496 fname = name;
1497 /*
1498 * set the MAKEFILE variable desired by System V fans -- the
1499 * placement of the setting here means it gets set to the last
1500 * makefile specified, as it is set by SysV make.
1501 */
1502 found:
1503 if (!doing_depend)
1504 Var_Set("MAKEFILE", fname, VAR_INTERNAL, 0);
1505 Parse_File(fname, fd);
1506 }
1507 free(path);
1508 return(0);
1509 }
1510
1511
1512
1513 /*-
1514 * Cmd_Exec --
1515 * Execute the command in cmd, and return the output of that command
1516 * in a string.
1517 *
1518 * Results:
1519 * A string containing the output of the command, or the empty string
1520 * If errnum is not NULL, it contains the reason for the command failure
1521 *
1522 * Side Effects:
1523 * The string must be freed by the caller.
1524 */
1525 char *
Cmd_Exec(const char * cmd,const char ** errnum)1526 Cmd_Exec(const char *cmd, const char **errnum)
1527 {
1528 const char *args[4]; /* Args for invoking the shell */
1529 int fds[2]; /* Pipe streams */
1530 int cpid; /* Child PID */
1531 int pid; /* PID from wait() */
1532 char *res; /* result */
1533 WAIT_T status; /* command exit status */
1534 Buffer buf; /* buffer to store the result */
1535 char *cp;
1536 int cc; /* bytes read, or -1 */
1537 int savederr; /* saved errno */
1538
1539
1540 *errnum = NULL;
1541
1542 if (!shellName)
1543 Shell_Init();
1544 /*
1545 * Set up arguments for shell
1546 */
1547 args[0] = shellName;
1548 args[1] = "-c";
1549 args[2] = cmd;
1550 args[3] = NULL;
1551
1552 /*
1553 * Open a pipe for fetching its output
1554 */
1555 if (pipe(fds) == -1) {
1556 *errnum = "Couldn't create pipe for \"%s\"";
1557 goto bad;
1558 }
1559
1560 /*
1561 * Fork
1562 */
1563 switch (cpid = vFork()) {
1564 case 0:
1565 /*
1566 * Close input side of pipe
1567 */
1568 (void)close(fds[0]);
1569
1570 /*
1571 * Duplicate the output stream to the shell's output, then
1572 * shut the extra thing down. Note we don't fetch the error
1573 * stream...why not? Why?
1574 */
1575 (void)dup2(fds[1], 1);
1576 (void)close(fds[1]);
1577
1578 Var_ExportVars();
1579
1580 (void)execv(shellPath, UNCONST(args));
1581 _exit(1);
1582 /*NOTREACHED*/
1583
1584 case -1:
1585 *errnum = "Couldn't exec \"%s\"";
1586 goto bad;
1587
1588 default:
1589 /*
1590 * No need for the writing half
1591 */
1592 (void)close(fds[1]);
1593
1594 savederr = 0;
1595 Buf_Init(&buf, 0);
1596
1597 do {
1598 char result[BUFSIZ];
1599 cc = read(fds[0], result, sizeof(result));
1600 if (cc > 0)
1601 Buf_AddBytes(&buf, cc, result);
1602 }
1603 while (cc > 0 || (cc == -1 && errno == EINTR));
1604 if (cc == -1)
1605 savederr = errno;
1606
1607 /*
1608 * Close the input side of the pipe.
1609 */
1610 (void)close(fds[0]);
1611
1612 /*
1613 * Wait for the process to exit.
1614 */
1615 while(((pid = waitpid(cpid, &status, 0)) != cpid) && (pid >= 0)) {
1616 JobReapChild(pid, status, FALSE);
1617 continue;
1618 }
1619 cc = Buf_Size(&buf);
1620 res = Buf_Destroy(&buf, FALSE);
1621
1622 if (savederr != 0)
1623 *errnum = "Couldn't read shell's output for \"%s\"";
1624
1625 if (WIFSIGNALED(status))
1626 *errnum = "\"%s\" exited on a signal";
1627 else if (WEXITSTATUS(status) != 0)
1628 *errnum = "\"%s\" returned non-zero status";
1629
1630 /*
1631 * Null-terminate the result, convert newlines to spaces and
1632 * install it in the variable.
1633 */
1634 res[cc] = '\0';
1635 cp = &res[cc];
1636
1637 if (cc > 0 && *--cp == '\n') {
1638 /*
1639 * A final newline is just stripped
1640 */
1641 *cp-- = '\0';
1642 }
1643 while (cp >= res) {
1644 if (*cp == '\n') {
1645 *cp = ' ';
1646 }
1647 cp--;
1648 }
1649 break;
1650 }
1651 return res;
1652 bad:
1653 res = bmake_malloc(1);
1654 *res = '\0';
1655 return res;
1656 }
1657
1658 /*-
1659 * Error --
1660 * Print an error message given its format.
1661 *
1662 * Results:
1663 * None.
1664 *
1665 * Side Effects:
1666 * The message is printed.
1667 */
1668 /* VARARGS */
1669 void
Error(const char * fmt,...)1670 Error(const char *fmt, ...)
1671 {
1672 va_list ap;
1673 FILE *err_file;
1674
1675 err_file = debug_file;
1676 if (err_file == stdout)
1677 err_file = stderr;
1678 (void)fflush(stdout);
1679 for (;;) {
1680 va_start(ap, fmt);
1681 fprintf(err_file, "%s: ", progname);
1682 (void)vfprintf(err_file, fmt, ap);
1683 va_end(ap);
1684 (void)fprintf(err_file, "\n");
1685 (void)fflush(err_file);
1686 if (err_file == stderr)
1687 break;
1688 err_file = stderr;
1689 }
1690 }
1691
1692 /*-
1693 * Fatal --
1694 * Produce a Fatal error message. If jobs are running, waits for them
1695 * to finish.
1696 *
1697 * Results:
1698 * None
1699 *
1700 * Side Effects:
1701 * The program exits
1702 */
1703 /* VARARGS */
1704 void
Fatal(const char * fmt,...)1705 Fatal(const char *fmt, ...)
1706 {
1707 va_list ap;
1708
1709 va_start(ap, fmt);
1710 if (jobsRunning)
1711 Job_Wait();
1712
1713 (void)fflush(stdout);
1714 (void)vfprintf(stderr, fmt, ap);
1715 va_end(ap);
1716 (void)fprintf(stderr, "\n");
1717 (void)fflush(stderr);
1718
1719 PrintOnError(NULL, NULL);
1720
1721 if (DEBUG(GRAPH2) || DEBUG(GRAPH3))
1722 Targ_PrintGraph(2);
1723 Trace_Log(MAKEERROR, 0);
1724 exit(2); /* Not 1 so -q can distinguish error */
1725 }
1726
1727 /*
1728 * Punt --
1729 * Major exception once jobs are being created. Kills all jobs, prints
1730 * a message and exits.
1731 *
1732 * Results:
1733 * None
1734 *
1735 * Side Effects:
1736 * All children are killed indiscriminately and the program Lib_Exits
1737 */
1738 /* VARARGS */
1739 void
Punt(const char * fmt,...)1740 Punt(const char *fmt, ...)
1741 {
1742 va_list ap;
1743
1744 va_start(ap, fmt);
1745 (void)fflush(stdout);
1746 (void)fprintf(stderr, "%s: ", progname);
1747 (void)vfprintf(stderr, fmt, ap);
1748 va_end(ap);
1749 (void)fprintf(stderr, "\n");
1750 (void)fflush(stderr);
1751
1752 PrintOnError(NULL, NULL);
1753
1754 DieHorribly();
1755 }
1756
1757 /*-
1758 * DieHorribly --
1759 * Exit without giving a message.
1760 *
1761 * Results:
1762 * None
1763 *
1764 * Side Effects:
1765 * A big one...
1766 */
1767 void
DieHorribly(void)1768 DieHorribly(void)
1769 {
1770 if (jobsRunning)
1771 Job_AbortAll();
1772 if (DEBUG(GRAPH2))
1773 Targ_PrintGraph(2);
1774 Trace_Log(MAKEERROR, 0);
1775 exit(2); /* Not 1, so -q can distinguish error */
1776 }
1777
1778 /*
1779 * Finish --
1780 * Called when aborting due to errors in child shell to signal
1781 * abnormal exit.
1782 *
1783 * Results:
1784 * None
1785 *
1786 * Side Effects:
1787 * The program exits
1788 */
1789 void
Finish(int errors)1790 Finish(int errors)
1791 /* number of errors encountered in Make_Make */
1792 {
1793 Fatal("%d error%s", errors, errors == 1 ? "" : "s");
1794 }
1795
1796 /*
1797 * eunlink --
1798 * Remove a file carefully, avoiding directories.
1799 */
1800 int
eunlink(const char * file)1801 eunlink(const char *file)
1802 {
1803 struct stat st;
1804
1805 if (lstat(file, &st) == -1)
1806 return -1;
1807
1808 if (S_ISDIR(st.st_mode)) {
1809 errno = EISDIR;
1810 return -1;
1811 }
1812 return unlink(file);
1813 }
1814
1815 /*
1816 * execError --
1817 * Print why exec failed, avoiding stdio.
1818 */
1819 void
execError(const char * af,const char * av)1820 execError(const char *af, const char *av)
1821 {
1822 #ifdef USE_IOVEC
1823 int i = 0;
1824 struct iovec iov[8];
1825 #define IOADD(s) \
1826 (void)(iov[i].iov_base = UNCONST(s), \
1827 iov[i].iov_len = strlen(iov[i].iov_base), \
1828 i++)
1829 #else
1830 #define IOADD(s) (void)write(2, s, strlen(s))
1831 #endif
1832
1833 IOADD(progname);
1834 IOADD(": ");
1835 IOADD(af);
1836 IOADD("(");
1837 IOADD(av);
1838 IOADD(") failed (");
1839 IOADD(strerror(errno));
1840 IOADD(")\n");
1841
1842 #ifdef USE_IOVEC
1843 while (writev(2, iov, 8) == -1 && errno == EAGAIN)
1844 continue;
1845 #endif
1846 }
1847
1848 /*
1849 * usage --
1850 * exit with usage message
1851 */
1852 static void
usage(void)1853 usage(void)
1854 {
1855 char *p;
1856 if ((p = strchr(progname, '[')) != NULL)
1857 *p = '\0';
1858
1859 (void)fprintf(stderr,
1860 "usage: %s [-BeikNnqrstWwX] \n\
1861 [-C directory] [-D variable] [-d flags] [-f makefile]\n\
1862 [-I directory] [-J private] [-j max_jobs] [-m directory] [-T file]\n\
1863 [-V variable] [variable=value] [target ...]\n", progname);
1864 exit(2);
1865 }
1866
1867
1868 int
PrintAddr(void * a,void * b)1869 PrintAddr(void *a, void *b)
1870 {
1871 printf("%lx ", (unsigned long) a);
1872 return b ? 0 : 0;
1873 }
1874
1875
1876
1877 void
PrintOnError(GNode * gn,const char * s)1878 PrintOnError(GNode *gn, const char *s)
1879 {
1880 static GNode *en = NULL;
1881 char tmp[64];
1882 char *cp;
1883
1884 if (s)
1885 printf("%s", s);
1886
1887 printf("\n%s: stopped in %s\n", progname, curdir);
1888
1889 if (en)
1890 return; /* we've been here! */
1891 if (gn) {
1892 /*
1893 * We can print this even if there is no .ERROR target.
1894 */
1895 Var_Set(".ERROR_TARGET", gn->name, VAR_GLOBAL, 0);
1896 }
1897 strncpy(tmp, "${MAKE_PRINT_VAR_ON_ERROR:@v@$v='${$v}'\n@}",
1898 sizeof(tmp) - 1);
1899 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, FALSE, TRUE);
1900 if (cp) {
1901 if (*cp)
1902 printf("%s", cp);
1903 free(cp);
1904 }
1905 fflush(stdout);
1906
1907 /*
1908 * Finally, see if there is a .ERROR target, and run it if so.
1909 */
1910 en = Targ_FindNode(".ERROR", TARG_NOCREATE);
1911 if (en) {
1912 en->type |= OP_SPECIAL;
1913 Compat_Make(en, en);
1914 }
1915 }
1916
1917 void
Main_ExportMAKEFLAGS(Boolean first)1918 Main_ExportMAKEFLAGS(Boolean first)
1919 {
1920 static int once = 1;
1921 char tmp[64];
1922 char *s;
1923
1924 if (once != first)
1925 return;
1926 once = 0;
1927
1928 strncpy(tmp, "${.MAKEFLAGS} ${.MAKEOVERRIDES:O:u:@v@$v=${$v:Q}@}",
1929 sizeof(tmp));
1930 s = Var_Subst(NULL, tmp, VAR_CMD, FALSE, TRUE);
1931 if (s && *s) {
1932 #ifdef POSIX
1933 setenv("MAKEFLAGS", s, 1);
1934 #else
1935 setenv("MAKE", s, 1);
1936 #endif
1937 }
1938 }
1939
1940 char *
getTmpdir(void)1941 getTmpdir(void)
1942 {
1943 static char *tmpdir = NULL;
1944
1945 if (!tmpdir) {
1946 struct stat st;
1947
1948 /*
1949 * Honor $TMPDIR but only if it is valid.
1950 * Ensure it ends with /.
1951 */
1952 tmpdir = Var_Subst(NULL, "${TMPDIR:tA:U" _PATH_TMP "}/", VAR_GLOBAL,
1953 FALSE, TRUE);
1954 if (stat(tmpdir, &st) < 0 || !S_ISDIR(st.st_mode)) {
1955 free(tmpdir);
1956 tmpdir = bmake_strdup(_PATH_TMP);
1957 }
1958 }
1959 return tmpdir;
1960 }
1961
1962 /*
1963 * Create and open a temp file using "pattern".
1964 * If "fnamep" is provided set it to a copy of the filename created.
1965 * Otherwise unlink the file once open.
1966 */
1967 int
mkTempFile(const char * pattern,char ** fnamep)1968 mkTempFile(const char *pattern, char **fnamep)
1969 {
1970 static char *tmpdir = NULL;
1971 char tfile[MAXPATHLEN];
1972 int fd;
1973
1974 if (!pattern)
1975 pattern = TMPPAT;
1976 if (!tmpdir)
1977 tmpdir = getTmpdir();
1978 if (pattern[0] == '/') {
1979 snprintf(tfile, sizeof(tfile), "%s", pattern);
1980 } else {
1981 snprintf(tfile, sizeof(tfile), "%s%s", tmpdir, pattern);
1982 }
1983 if ((fd = mkstemp(tfile)) < 0)
1984 Punt("Could not create temporary file %s: %s", tfile, strerror(errno));
1985 if (fnamep) {
1986 *fnamep = bmake_strdup(tfile);
1987 } else {
1988 unlink(tfile); /* we just want the descriptor */
1989 }
1990 return fd;
1991 }
1992
1993
1994 /*
1995 * Return a Boolean based on setting of a knob.
1996 *
1997 * If the knob is not set, the supplied default is the return value.
1998 * If set, anything that looks or smells like "No", "False", "Off", "0" etc,
1999 * is FALSE, otherwise TRUE.
2000 */
2001 Boolean
getBoolean(const char * name,Boolean bf)2002 getBoolean(const char *name, Boolean bf)
2003 {
2004 char tmp[64];
2005 char *cp;
2006
2007 if (snprintf(tmp, sizeof(tmp), "${%s:tl}", name) < (int)(sizeof(tmp))) {
2008 cp = Var_Subst(NULL, tmp, VAR_GLOBAL, FALSE, TRUE);
2009
2010 if (cp) {
2011 switch(*cp) {
2012 case '\0': /* not set - the default wins */
2013 break;
2014 case '0':
2015 case 'f':
2016 case 'n':
2017 bf = FALSE;
2018 break;
2019 case 'o':
2020 switch (cp[1]) {
2021 case 'f':
2022 bf = FALSE;
2023 break;
2024 default:
2025 bf = TRUE;
2026 break;
2027 }
2028 break;
2029 default:
2030 bf = TRUE;
2031 break;
2032 }
2033 free(cp);
2034 }
2035 }
2036 return (bf);
2037 }
2038