GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/make/main.c Lines: 217 347 62.5 %
Date: 2017-11-13 Branches: 96 206 46.6 %

Line Branch Exec Source
1
/*	$OpenBSD: main.c,v 1.122 2017/04/20 03:04:11 dlg Exp $ */
2
/*	$NetBSD: main.c,v 1.34 1997/03/24 20:56:36 gwr Exp $	*/
3
4
/*
5
 * Copyright (c) 1988, 1989, 1990, 1993
6
 *	The Regents of the University of California.  All rights reserved.
7
 * Copyright (c) 1989 by Berkeley Softworks
8
 * All rights reserved.
9
 *
10
 * This code is derived from software contributed to Berkeley by
11
 * Adam de Boor.
12
 *
13
 * Redistribution and use in source and binary forms, with or without
14
 * modification, are permitted provided that the following conditions
15
 * are met:
16
 * 1. Redistributions of source code must retain the above copyright
17
 *    notice, this list of conditions and the following disclaimer.
18
 * 2. Redistributions in binary form must reproduce the above copyright
19
 *    notice, this list of conditions and the following disclaimer in the
20
 *    documentation and/or other materials provided with the distribution.
21
 * 3. Neither the name of the University nor the names of its contributors
22
 *    may be used to endorse or promote products derived from this software
23
 *    without specific prior written permission.
24
 *
25
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35
 * SUCH DAMAGE.
36
 */
37
38
#include <sys/param.h>	/* MACHINE MACHINE_ARCH */
39
#include <sys/types.h>
40
#include <sys/stat.h>
41
#include <sys/utsname.h>
42
#include <err.h>
43
#include <errno.h>
44
#include <stdio.h>
45
#include <stdlib.h>
46
#include <string.h>
47
#include <unistd.h>
48
#include "config.h"
49
#include "defines.h"
50
#include "var.h"
51
#include "lowparse.h"
52
#include "parse.h"
53
#include "parsevar.h"
54
#include "dir.h"
55
#include "direxpand.h"
56
#include "error.h"
57
#include "pathnames.h"
58
#include "init.h"
59
#include "job.h"
60
#include "compat.h"
61
#include "targ.h"
62
#include "suff.h"
63
#include "str.h"
64
#include "main.h"
65
#include "lst.h"
66
#include "memory.h"
67
#include "make.h"
68
#include "dump.h"
69
70
#define MAKEFLAGS	".MAKEFLAGS"
71
72
static LIST		to_create; 	/* Targets to be made */
73
Lst create = &to_create;
74
bool 		allPrecious;	/* .PRECIOUS given on line by itself */
75
76
static bool		noBuiltins;	/* -r flag */
77
static LIST		makefiles;	/* ordered list of makefiles to read */
78
static LIST		varstoprint;	/* list of variables to print */
79
int			maxJobs;	/* -j argument */
80
bool 		compatMake;	/* -B argument */
81
static bool		forceJobs = false;
82
int 		debug;		/* -d flag */
83
bool 		noExecute;	/* -n flag */
84
bool 		keepgoing;	/* -k flag */
85
bool 		queryFlag;	/* -q flag */
86
bool 		touchFlag;	/* -t flag */
87
bool 		ignoreErrors;	/* -i flag */
88
bool 		beSilent;	/* -s flag */
89
bool		dumpData;	/* -p flag */
90
91
struct dirs {
92
	char *current;
93
	char *object;
94
};
95
96
static void MainParseArgs(int, char **);
97
static void add_dirpath(Lst, const char *);
98
static void usage(void);
99
static void posixParseOptLetter(int);
100
static void record_option(int, const char *);
101
102
static char *figure_out_MACHINE(void);
103
static char *figure_out_MACHINE_ARCH(void);
104
static char *figure_out_MACHINE_CPU(void);
105
106
static char *chdir_verify_path(const char *, struct dirs *);
107
static char *figure_out_CURDIR(void);
108
static void setup_CURDIR_OBJDIR(struct dirs *);
109
110
static void setup_VPATH(void);
111
112
static void read_all_make_rules(bool, bool, Lst, struct dirs *);
113
static void read_makefile_list(Lst, struct dirs *);
114
static bool ReadMakefile(void *, void *);
115
116
static void
117
record_option(int c, const char *arg)
118
{
119
30
    	char opt[3];
120
121
15
	opt[0] = '-';
122
15
	opt[1] = c;
123
15
	opt[2] = '\0';
124
15
	Var_Append(MAKEFLAGS, opt);
125
15
	if (arg != NULL)
126
15
		Var_Append(MAKEFLAGS, arg);
127
15
}
128
129
static void
130
posixParseOptLetter(int c)
131
{
132
	switch(c) {
133
	case 'B':
134
		compatMake = true;
135
		return;	/* XXX don't pass to submakes. */
136
	case 'S':
137
		keepgoing = false;
138
		break;
139
	case 'e':
140
		Var_setCheckEnvFirst(true);
141
		break;
142
	case 'i':
143
		ignoreErrors = true;
144
		break;
145
	case 'k':
146
		keepgoing = true;
147
		break;
148
	case 'n':
149
		noExecute = true;
150
		break;
151
	case 'p':
152
		dumpData = true;
153
		break;
154
	case 'q':
155
		queryFlag = true;
156
		/* Kind of nonsensical, wot? */
157
		break;
158
	case 'r':
159
		noBuiltins = true;
160
		break;
161
	case 's':
162
		beSilent = true;
163
		break;
164
	case 't':
165
		touchFlag = true;
166
		break;
167
	default:
168
	case '?':
169
		usage();
170
	}
171
	record_option(c, NULL);
172
}
173
174
/*-
175
 * MainParseArgs --
176
 *	Parse a given argument vector. Called from main() and from
177
 *	Main_ParseArgLine() when the .MAKEFLAGS target is used.
178
 *
179
 *	XXX: Deal with command line overriding .MAKEFLAGS in makefile
180
 *
181
 * Side Effects:
182
 *	Various global and local flags will be set depending on the flags
183
 *	given
184
 */
185
static void
186
MainParseArgs(int argc, char **argv)
187
{
188
	int c, optend;
189
190
#define OPTFLAGS "BC:D:I:SV:d:ef:ij:km:npqrst"
191
#define OPTLETTERS "BSiknpqrst"
192
193
66242
	if (pledge("stdio rpath wpath cpath fattr proc exec flock", NULL) == -1)
194
		err(2, "pledge");
195
196
33121
	optind = 1;	/* since we're called more than once */
197
33121
	optreset = 1;
198
	optend = 0;
199
227444
	while (optind < argc) {
200

161202
		if (!optend && argv[optind][0] == '-') {
201
6003
			if (argv[optind][1] == '\0')
202
				optind++;	/* ignore "-" */
203

6003
			else if (argv[optind][1] == '-' &&
204
			    argv[optind][2] == '\0') {
205
				optind++;	/* ignore "--" */
206
				optend++;	/* "--" denotes end of flags */
207
			}
208
		}
209
316435
		c = optend ? -1 : getopt(argc, argv, OPTFLAGS);
210


155233
		switch (c) {
211
		case 'C':
212
			break;
213
		case 'D':
214
			Var_Set(optarg, "1");
215
			record_option(c, optarg);
216
			break;
217
		case 'I':
218
			Parse_AddIncludeDir(optarg);
219
			record_option(c, optarg);
220
			break;
221
		case 'V':
222
15
			Lst_AtEnd(&varstoprint, optarg);
223
15
			record_option(c, optarg);
224
15
			break;
225
		case 'd': {
226
			char *modules = optarg;
227
228
			for (; *modules; ++modules)
229
				switch (*modules) {
230
				case 'A':
231
					debug = ~0;
232
					break;
233
				case 'a':
234
					debug |= DEBUG_ARCH;
235
					break;
236
				case 'c':
237
					debug |= DEBUG_COND;
238
					break;
239
				case 'd':
240
					debug |= DEBUG_DIR;
241
					break;
242
				case 'D':
243
					debug |= DEBUG_DOUBLE;
244
					break;
245
				case 'e':
246
					debug |= DEBUG_EXPENSIVE;
247
					break;
248
				case 'f':
249
					debug |= DEBUG_FOR;
250
					break;
251
				case 'g':
252
					if (modules[1] == '1') {
253
						debug |= DEBUG_GRAPH1;
254
						++modules;
255
					}
256
					else if (modules[1] == '2') {
257
						debug |= DEBUG_GRAPH2;
258
						++modules;
259
					}
260
					break;
261
				case 'h':
262
					debug |= DEBUG_HELDJOBS;
263
					break;
264
				case 'j':
265
					debug |= DEBUG_JOB | DEBUG_KILL;
266
					break;
267
				case 'J':
268
					/* ignore */
269
					break;
270
				case 'k':
271
					debug |= DEBUG_KILL;
272
					break;
273
				case 'l':
274
					debug |= DEBUG_LOUD;
275
					break;
276
				case 'm':
277
					debug |= DEBUG_MAKE;
278
					break;
279
				case 'n':
280
					debug |= DEBUG_NAME_MATCHING;
281
					break;
282
				case 'p':
283
					debug |= DEBUG_PARALLEL;
284
					break;
285
				case 'q':
286
					debug |= DEBUG_QUICKDEATH;
287
					break;
288
				case 's':
289
					debug |= DEBUG_SUFF;
290
					break;
291
				case 't':
292
					debug |= DEBUG_TARG;
293
					break;
294
				case 'T':
295
					debug |= DEBUG_TARGGROUP;
296
					break;
297
				case 'v':
298
					debug |= DEBUG_VAR;
299
					break;
300
				default:
301
					(void)fprintf(stderr,
302
				"make: illegal argument to -d option -- %c\n",
303
					    *modules);
304
					usage();
305
				}
306
			record_option(c, optarg);
307
			break;
308
		}
309
		case 'f':
310
19
			Lst_AtEnd(&makefiles, optarg);
311
19
			break;
312
		case 'j': {
313
			const char *errstr;
314
315
			forceJobs = true;
316
			maxJobs = strtonum(optarg, 1, INT_MAX, &errstr);
317
			if (errstr != NULL) {
318
				fprintf(stderr,
319
				    "make: illegal argument to -j option"
320
				    " -- %s -- %s\n", optarg, errstr);
321
				usage();
322
			}
323
			record_option(c, optarg);
324
			break;
325
		}
326
		case 'm':
327
			Dir_AddDir(systemIncludePath, optarg);
328
			record_option(c, optarg);
329
			break;
330
		case -1:
331
			/* Check for variable assignments and targets. */
332

149196
			if (argv[optind] != NULL &&
333
74598
			    !Parse_CmdlineVar(argv[optind])) {
334
16773
				if (!*argv[optind])
335
					Punt("illegal (null) argument.");
336
16773
				Lst_AtEnd(create, estrdup(argv[optind]));
337
16773
			}
338
74598
			optind++;	/* skip over non-option */
339
74598
			break;
340
		default:
341
			posixParseOptLetter(c);
342
		}
343
	}
344
33121
}
345
346
static void
347
MainParseChdir(int argc, char **argv)
348
{
349
	int c, optend, oldopterr;
350
351
33706
	optind = 1;	/* since we're called more than once */
352
16853
	optreset = 1;
353
	optend = 0;
354
16853
	oldopterr = opterr;
355
16853
	opterr = 0;
356
102972
	while (optind < argc) {
357

69266
		if (!optend && argv[optind][0] == '-') {
358
6003
			if (argv[optind][1] == '\0')
359
				optind++;	/* ignore "-" */
360

6003
			else if (argv[optind][1] == '-' &&
361
			    argv[optind][2] == '\0') {
362
				optind++;	/* ignore "--" */
363
				optend++;	/* "--" denotes end of flags */
364
			}
365
		}
366
138498
		c = optend ? -1 : getopt(argc, argv, OPTFLAGS);
367
69232
		switch (c) {
368
		case 'C':
369
5969
			if (chdir(optarg) == -1)
370
				err(2, "chdir(%s)", optarg);
371
			break;
372
		case -1:
373
28630
			optind++;	/* skip over non-option */
374
28630
			break;
375
		default:
376
			break;
377
		}
378
	}
379
16853
	opterr = oldopterr;
380
16853
}
381
382
/*-
383
 * Main_ParseArgLine --
384
 *	Used by the parse module when a .MFLAGS or .MAKEFLAGS target
385
 *	is encountered and by main() when reading the .MAKEFLAGS envariable.
386
 *	Takes a line of arguments and breaks it into its
387
 *	component words and passes those words and the number of them to the
388
 *	MainParseArgs function.
389
 *	The line should have all its leading whitespace removed.
390
 *
391
 * Side Effects:
392
 *	Only those that come from the various arguments.
393
 */
394
void
395
Main_ParseArgLine(const char *line) 	/* Line to fracture */
396
{
397
	char **argv;			/* Manufactured argument vector */
398
33706
	int argc;			/* Number of arguments in argv */
399
16853
	char *args;			/* Space used by the args */
400
	char *buf;
401
	char *argv0;
402
	const char *s;
403
	size_t len;
404
405
406
16853
	if (line == NULL)
407
50
		return;
408
67212
	for (; *line == ' '; ++line)
409
		continue;
410
16803
	if (!*line)
411
535
		return;
412
413
	/* POSIX rule: MAKEFLAGS can hold a set of option letters without
414
	 * any blanks or dashes. */
415
32536
	for (s = line;; s++) {
416
32536
		if (*s == '\0') {
417
			while (line != s)
418
				posixParseOptLetter(*line++);
419
			return;
420
		}
421
32536
		if (strchr(OPTLETTERS, *s) == NULL)
422
			break;
423
	}
424
16268
	argv0 = Var_Value(".MAKE");
425
16268
	len = strlen(line) + strlen(argv0) + 2;
426
16268
	buf = emalloc(len);
427
16268
	(void)snprintf(buf, len, "%s %s", argv0, line);
428
429
16268
	argv = brk_string(buf, &argc, &args);
430
16268
	free(buf);
431
16268
	MainParseArgs(argc, argv);
432
433
16268
	free(args);
434
16268
	free(argv);
435
33121
}
436
437
/* Add a :-separated path to a Lst of directories.  */
438
static void
439
add_dirpath(Lst l, const char *n)
440
{
441
	const char *start;
442
	const char *cp;
443
444
33734
	for (start = n;;) {
445

692849
		for (cp = start; *cp != '\0' && *cp != ':';)
446
219705
			cp++;
447
16867
		Dir_AddDiri(l, start, cp);
448
16867
		if (*cp == '\0')
449
			break;
450
		else
451
			start= cp+1;
452
	}
453
16867
}
454
455
/*
456
 * Get the name of this type of MACHINE from utsname so we can share an
457
 * executable for similar machines. (i.e. m68k: amiga hp300, mac68k, sun3, ...)
458
 *
459
 * Note that MACHINE, MACHINE_ARCH and MACHINE_CPU are decided at
460
 * run-time.
461
 */
462
static char *
463
figure_out_MACHINE()
464
{
465
33706
	char *r = getenv("MACHINE");
466
16853
	if (r == NULL) {
467
		static struct utsname utsname;
468
469
16853
		if (uname(&utsname) == -1)
470
			err(2, "uname");
471
		r = utsname.machine;
472
16853
	}
473
16853
	return r;
474
}
475
476
static char *
477
figure_out_MACHINE_ARCH()
478
{
479
33706
	char *r = getenv("MACHINE_ARCH");
480
16853
	if (r == NULL) {
481
#ifndef MACHINE_ARCH
482
		r = "unknown";	/* XXX: no uname -p yet */
483
#else
484
		r = MACHINE_ARCH;
485
#endif
486
	}
487
16853
	return r;
488
}
489
static char *
490
figure_out_MACHINE_CPU()
491
{
492
33706
	char *r = getenv("MACHINE_CPU");
493
16853
	if (r == NULL) {
494
#if !defined(MACHINE_CPU) && ! defined(MACHINE_ARCH)
495
		r = "unknown";	/* XXX: no uname -p yet */
496
#else
497
#if defined(MACHINE_CPU)
498
		r = MACHINE_CPU;
499
#else
500
		r = MACHINE_ARCH;
501
#endif
502
#endif
503
	}
504
16853
	return r;
505
}
506
507
static char *
508
figure_out_CURDIR()
509
{
510
	char *dir, *cwd;
511
33706
	struct stat sa, sb;
512
513
	/* curdir is cwd... */
514
16853
	cwd = dogetcwd();
515
16853
	if (cwd == NULL)
516
		err(2, "%s", strerror(errno));
517
518
16853
	if (stat(cwd, &sa) == -1)
519
		err(2, "%s: %s", cwd, strerror(errno));
520
521
	/* ...but we can use the alias $PWD if we can prove it is the same
522
	 * directory */
523
16853
	if ((dir = getenv("PWD")) != NULL) {
524

44598
		if (stat(dir, &sb) == 0 && sa.st_ino == sb.st_ino &&
525
10892
		    sa.st_dev == sb.st_dev) {
526
10892
		    	free(cwd);
527
10892
			return estrdup(dir);
528
		}
529
	}
530
531
5961
	return cwd;
532
16853
}
533
534
static char *
535
chdir_verify_path(const char *path, struct dirs *d)
536
{
537
33706
	if (chdir(path) == 0) {
538
		if (path[0] != '/')
539
			return Str_concat(d->current, path, '/');
540
		else
541
			return estrdup(path);
542
	}
543
16853
	return NULL;
544
16853
}
545
546
static void
547
setup_CURDIR_OBJDIR(struct dirs *d)
548
{
549
	char *path;
550
551
33706
	d->current = figure_out_CURDIR();
552
	/*
553
	 * If the MAKEOBJDIR (or by default, the _PATH_OBJDIR) directory
554
	 * exists, change into it and build there.
555
	 *
556
	 * Once things are initted,
557
	 * have to add the original directory to the search path,
558
	 * and modify the paths for the Makefiles appropriately.  The
559
	 * current directory is also placed as a variable for make scripts.
560
	 */
561
16853
	if ((path = getenv("MAKEOBJDIR")) == NULL) {
562
		path = _PATH_OBJDIR;
563
	}
564
16853
	d->object = chdir_verify_path(path, d);
565
16853
	if (d->object == NULL)
566
16853
		d->object = d->current;
567
16853
}
568
569
/*
570
 * if the VPATH variable is defined, add its contents to the search path.
571
 * Uses the same format as the PATH env variable, i.e.,
572
 * <directory>:<directory>:<directory>...
573
 */
574
static void
575
setup_VPATH()
576
{
577
33706
	if (Var_Value("VPATH") != NULL) {
578
		char *vpath;
579
580
14
		vpath = Var_Subst("${VPATH}", NULL, false);
581
14
		add_dirpath(defaultPath, vpath);
582
14
		(void)free(vpath);
583
14
	}
584
16853
}
585
586
static void
587
read_makefile_list(Lst mk, struct dirs *d)
588
{
589
	LstNode ln;
590
33744
	ln = Lst_Find(mk, ReadMakefile, d);
591
16872
	if (ln != NULL)
592
		Fatal("make: cannot open %s.", (char *)Lst_Datum(ln));
593
16872
}
594
595
static void
596
read_all_make_rules(bool noBuiltins, bool read_depend,
597
    Lst makefiles, struct dirs *d)
598
{
599
	/*
600
	 * Read in the built-in rules first, followed by the specified
601
	 * makefile(s), or the default Makefile or makefile, in that order.
602
	 */
603
16853
	if (!noBuiltins) {
604
16853
		LIST sysMkPath; 		/* Path of sys.mk */
605
606
16853
		Lst_Init(&sysMkPath);
607
16853
		Dir_Expand(_PATH_DEFSYSMK, systemIncludePath, &sysMkPath);
608
16853
		if (Lst_IsEmpty(&sysMkPath))
609
			Fatal("make: no system rules (%s).", _PATH_DEFSYSMK);
610
611
16853
		read_makefile_list(&sysMkPath, d);
612
16853
	}
613
614
16853
	if (!Lst_IsEmpty(makefiles)) {
615
19
		read_makefile_list(makefiles, d);
616
16853
	} else if (!ReadMakefile("makefile", d))
617
16834
		(void)ReadMakefile("Makefile", d);
618
619
	/* read a .depend file, if it exists, and we're not building depend */
620
621
16853
	if (read_depend)
622
15609
		(void)ReadMakefile(".depend", d);
623
16853
	Parse_End();
624
16853
}
625
626
627
int main(int, char **);
628
/*-
629
 * main --
630
 *	The main function, for obvious reasons. Initializes variables
631
 *	and a few modules, then parses the arguments give it in the
632
 *	environment and on the command line. Reads the system makefile
633
 *	followed by either Makefile, makefile or the file given by the
634
 *	-f argument. Sets the .MAKEFLAGS PMake variable based on all the
635
 *	flags it has received by then uses either the Make or the Compat
636
 *	module to create the initial list of targets.
637
 *
638
 * Results:
639
 *	If -q was given, exits -1 if anything was out-of-date. Else it exits
640
 *	0.
641
 *
642
 * Side Effects:
643
 *	The program exits when done. Targets are created. etc. etc. etc.
644
 */
645
int
646
main(int argc, char **argv)
647
{
648
	static LIST targs;	/* target nodes to create */
649
	bool outOfDate = true;	/* false if all targets up to date */
650
33706
	char *machine = figure_out_MACHINE();
651
16853
	char *machine_arch = figure_out_MACHINE_ARCH();
652
16853
	char *machine_cpu = figure_out_MACHINE_CPU();
653
	const char *syspath = _PATH_DEFSYSPATH;
654
	char *p;
655
	static struct dirs d;
656
	bool read_depend = true;/* false if we don't want to read .depend */
657
658
16853
	MainParseChdir(argc, argv);
659
16853
	setup_CURDIR_OBJDIR(&d);
660
661
16853
	esetenv("PWD", d.object);
662
16853
	unsetenv("CDPATH");
663
664
	Static_Lst_Init(create);
665
	Static_Lst_Init(&makefiles);
666
	Static_Lst_Init(&varstoprint);
667
	Static_Lst_Init(&targs);
668
669
16853
	beSilent = false;		/* Print commands as executed */
670
16853
	ignoreErrors = false;		/* Pay attention to non-zero returns */
671
16853
	noExecute = false;		/* Execute all commands */
672
16853
	keepgoing = false;		/* Stop on error */
673
16853
	allPrecious = false;		/* Remove targets when interrupted */
674
16853
	queryFlag = false;		/* This is not just a check-run */
675
16853
	noBuiltins = false;		/* Read the built-in rules */
676
16853
	touchFlag = false;		/* Actually update targets */
677
16853
	debug = 0;			/* No debug verbosity, please. */
678
679
16853
	maxJobs = DEFMAXJOBS;
680
16853
	compatMake = false;		/* No compat mode */
681
682
683
	/*
684
	 * Initialize all external modules.
685
	 */
686
16853
	Init();
687
688
16853
	if (d.object != d.current)
689
		Dir_AddDir(defaultPath, d.current);
690
16853
	Var_Set(".CURDIR", d.current);
691
16853
	Var_Set(".OBJDIR", d.object);
692
16853
	Parse_setcurdir(d.current);
693
16853
	Targ_setdirs(d.current, d.object);
694
695
	/*
696
	 * Initialize various variables.
697
	 *	MAKE also gets this name, for compatibility
698
	 *	.MAKEFLAGS gets set to the empty string just in case.
699
	 *	MFLAGS also gets initialized empty, for compatibility.
700
	 */
701
16853
	Var_Set("MAKE", argv[0]);
702
16853
	Var_Set(".MAKE", argv[0]);
703
16853
	Var_Set(MAKEFLAGS, "");
704
16853
	Var_Set("MFLAGS", "");
705
16853
	Var_Set("MACHINE", machine);
706
16853
	Var_Set("MACHINE_ARCH", machine_arch);
707
16853
	Var_Set("MACHINE_CPU", machine_cpu);
708
709
	/*
710
	 * First snag any flags out of the MAKEFLAGS environment variable.
711
	 */
712
16853
	Main_ParseArgLine(getenv("MAKEFLAGS"));
713
714
16853
	basedirectory = getenv("MAKEBASEDIRECTORY");
715
16853
	if (basedirectory == NULL)
716
50
		setenv("MAKEBASEDIRECTORY", d.current, 0);
717
718
16853
	MainParseArgs(argc, argv);
719
720
	/*
721
	 * Be compatible if user did not specify -j
722
	 */
723
16853
	if (!forceJobs)
724
16853
		compatMake = true;
725
726
	/* And set up everything for sub-makes */
727
16853
	Var_AddCmdline(MAKEFLAGS);
728
729
730
	/*
731
	 * Set up the .TARGETS variable to contain the list of targets to be
732
	 * created. If none specified, make the variable empty -- the parser
733
	 * will fill the thing in with the default or .MAIN target.
734
	 */
735
16853
	if (!Lst_IsEmpty(create)) {
736
		LstNode ln;
737
738
67092
		for (ln = Lst_First(create); ln != NULL; ln = Lst_Adv(ln)) {
739
16773
			char *name = Lst_Datum(ln);
740
741
16773
			if (strcmp(name, "depend") == 0)
742
1244
				read_depend = false;
743
744
16773
			Var_Append(".TARGETS", name);
745
		}
746
16773
	} else
747
80
		Var_Set(".TARGETS", "");
748
749
750
	/*
751
	 * If no user-supplied system path was given (through the -m option)
752
	 * add the directories from the DEFSYSPATH (more than one may be given
753
	 * as dir1:...:dirn) to the system include path.
754
	 */
755
16853
	if (Lst_IsEmpty(systemIncludePath))
756
16853
	    add_dirpath(systemIncludePath, syspath);
757
758
16853
	read_all_make_rules(noBuiltins, read_depend, &makefiles, &d);
759
760
16853
	Var_Append("MFLAGS", Var_Value(MAKEFLAGS));
761
762
	/* Install all the flags into the MAKEFLAGS env variable. */
763

33706
	if (((p = Var_Value(MAKEFLAGS)) != NULL) && *p)
764
16853
		esetenv("MAKEFLAGS", p);
765
766
16853
	setup_VPATH();
767
768
16853
	process_suffixes_after_makefile_is_read();
769
770
16853
	if (dumpData) {
771
		dump_data();
772
		exit(0);
773
	}
774
775
	/* Print the initial graph, if the user requested it.  */
776
16853
	if (DEBUG(GRAPH1))
777
		dump_data();
778
779
	/* Print the values of any variables requested by the user.  */
780
16853
	if (!Lst_IsEmpty(&varstoprint)) {
781
		LstNode ln;
782
783
60
		for (ln = Lst_First(&varstoprint); ln != NULL;
784
15
		    ln = Lst_Adv(ln)) {
785
15
			char *value = Var_Value(Lst_Datum(ln));
786
787
15
			printf("%s\n", value ? value : "");
788
		}
789
15
	} else {
790
		/* Have now read the entire graph and need to make a list
791
		 * of targets to create. If none was given on the command
792
		 * line, we consult the parsing module to find the main
793
		 * target(s) to create.  */
794
16838
		if (Lst_IsEmpty(create))
795
19
			Parse_MainName(&targs);
796
		else
797
16819
			Targ_FindList(&targs, create);
798
799
16838
		Job_Init(maxJobs);
800
		/* If the user has defined a .BEGIN target, execute the commands
801
		 * attached to it.  */
802
16838
		if (!queryFlag)
803
16838
			Job_Begin();
804
16838
		if (compatMake)
805
			/* Compat_Init will take care of creating all the
806
			 * targets as well as initializing the module.  */
807
16838
			Compat_Run(&targs);
808
		else {
809
			/* Traverse the graph, checking on all the targets.  */
810
			outOfDate = Make_Run(&targs);
811
		}
812
	}
813
814
	/* print the graph now it's been processed if the user requested it */
815
16713
	if (DEBUG(GRAPH2))
816
		post_mortem();
817
818

16713
	if (queryFlag && outOfDate)
819
		return 1;
820
	else
821
16713
		return 0;
822
16713
}
823
824
/*-
825
 * ReadMakefile  --
826
 *	Open and parse the given makefile.
827
 *
828
 * Results:
829
 *	true if ok. false if couldn't open file.
830
 *
831
 * Side Effects:
832
 *	lots
833
 */
834
static bool
835
ReadMakefile(void *p, void *q)
836
{
837
	const char *fname = p;	/* makefile to read */
838
132302
	struct dirs *d = q;
839
	FILE *stream;
840
	char *name;
841
842
66151
	if (!strcmp(fname, "-")) {
843
19
		Var_Set("MAKEFILE", "");
844
19
		Parse_File(estrdup("(stdin)"), stdin);
845
19
	} else {
846
66132
		if ((stream = fopen(fname, "r")) != NULL)
847
			goto found;
848
		/* if we've chdir'd, rebuild the path name */
849

32443
		if (d->current != d->object && *fname != '/') {
850
			char *path;
851
852
			path = Str_concat(d->current, fname, '/');
853
			if ((stream = fopen(path, "r")) == NULL)
854
				free(path);
855
			else {
856
				fname = path;
857
				goto found;
858
			}
859
		}
860
		/* look in -I and system include directories. */
861
32443
		name = Dir_FindFile(fname, userIncludePath);
862
32443
		if (!name)
863
32443
			name = Dir_FindFile(fname, systemIncludePath);
864

32443
		if (!name || !(stream = fopen(name, "r")))
865
32443
			return false;
866
		fname = name;
867
		/*
868
		 * set the MAKEFILE variable desired by System V fans -- the
869
		 * placement of the setting here means it gets set to the last
870
		 * makefile specified, as it is set by SysV make.
871
		 */
872
33689
found:		Var_Set("MAKEFILE", fname);
873
33689
		Parse_File(fname, stream);
874
	}
875
33708
	return true;
876
66151
}
877
878
879
/*
880
 * usage --
881
 *	exit with usage message
882
 */
883
static void
884
usage()
885
{
886
	(void)fprintf(stderr,
887
"usage: make [-BeiknpqrSst] [-C directory] [-D variable] [-d flags] [-f mk]\n\
888
	    [-I directory] [-j max_processes] [-m directory] [-V variable]\n\
889
	    [NAME=value] [target ...]\n");
890
	exit(2);
891
}
892
893