1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
|
/*-
* Copyright (c) 1988, 1989, 1990, 1993
* The Regents of the University of California. All rights reserved.
* Copyright (c) 1989 by Berkeley Softworks
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Adam de Boor.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)main.c 8.3 (Berkeley) 3/19/94
*/
#ifndef lint
#if 0
static char copyright[] =
"@(#) Copyright (c) 1988, 1989, 1990, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#endif /* not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* main.c
* The main file for this entire program. Exit routines etc
* reside here.
*
* Utility functions defined in this file:
* Main_ParseArgLine
* Takes a line of arguments, breaks them and
* treats them as if they were given when first
* invoked. Used by the parse module to implement
* the .MFLAGS target.
*/
#include <sys/param.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/queue.h>
#include <sys/resource.h>
#include <sys/utsname.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "arch.h"
#include "buf.h"
#include "config.h"
#include "dir.h"
#include "globals.h"
#include "GNode.h"
#include "job.h"
#include "make.h"
#include "parse.h"
#include "pathnames.h"
#include "shell.h"
#include "str.h"
#include "suff.h"
#include "targ.h"
#include "util.h"
#include "var.h"
extern char **environ; /* XXX what header declares this variable? */
#define WANT_ENV_MKLVL 1
#define MKLVL_MAXVAL 500
#define MKLVL_ENVVAR "__MKLVL__"
/* ordered list of makefiles to read */
static Lst makefiles = Lst_Initializer(makefiles);
/* ordered list of source makefiles */
static Lst source_makefiles = Lst_Initializer(source_makefiles);
/* list of variables to print */
static Lst variables = Lst_Initializer(variables);
static Boolean expandVars; /* fully expand printed variables */
static Boolean noBuiltins; /* -r flag */
static Boolean forceJobs; /* -j argument given */
static char *curdir; /* startup directory */
static char *objdir; /* where we chdir'ed to */
static char **save_argv; /* saved argv */
static char *save_makeflags;/* saved MAKEFLAGS */
/* (-E) vars to override from env */
Lst envFirstVars = Lst_Initializer(envFirstVars);
/* Targets to be made */
Lst create = Lst_Initializer(create);
Boolean allPrecious; /* .PRECIOUS given on line by itself */
Boolean is_posix; /* .POSIX target seen */
Boolean mfAutoDeps; /* .MAKEFILEDEPS target seen */
Boolean beSilent; /* -s flag */
Boolean beVerbose; /* -v flag */
Boolean compatMake; /* -B argument */
int debug; /* -d flag */
Boolean ignoreErrors; /* -i flag */
int jobLimit; /* -j argument */
int makeErrors; /* Number of targets not remade due to errors */
Boolean jobsRunning; /* TRUE if the jobs might be running */
Boolean keepgoing; /* -k flag */
Boolean noExecute; /* -n flag */
Boolean printGraphOnly; /* -p flag */
Boolean queryFlag; /* -q flag */
Boolean touchFlag; /* -t flag */
Boolean usePipes; /* !-P flag */
uint32_t warn_cmd; /* command line warning flags */
uint32_t warn_flags; /* actual warning flags */
uint32_t warn_nocmd; /* command line no-warning flags */
time_t now; /* Time at start of make */
struct GNode *DEFAULT; /* .DEFAULT node */
/**
* Exit with usage message.
*/
static void
usage(void)
{
fprintf(stderr,
"usage: make [-BPSXeiknpqrstv] [-C directory] [-D variable]\n"
"\t[-d flags] [-E variable] [-f makefile] [-I directory]\n"
"\t[-j max_jobs] [-m directory] [-V variable]\n"
"\t[variable=value] [target ...]\n");
exit(2);
}
/**
* MFLAGS_append
* Append a flag with an optional argument to MAKEFLAGS and MFLAGS
*/
static void
MFLAGS_append(const char *flag, char *arg)
{
char *str;
Var_Append(".MAKEFLAGS", flag, VAR_GLOBAL);
if (arg != NULL) {
str = MAKEFLAGS_quote(arg);
Var_Append(".MAKEFLAGS", str, VAR_GLOBAL);
free(str);
}
Var_Append("MFLAGS", flag, VAR_GLOBAL);
if (arg != NULL) {
str = MAKEFLAGS_quote(arg);
Var_Append("MFLAGS", str, VAR_GLOBAL);
free(str);
}
}
/**
* Main_ParseWarn
*
* Handle argument to warning option.
*/
int
Main_ParseWarn(const char *arg, int iscmd)
{
int i, neg;
static const struct {
const char *option;
uint32_t flag;
} options[] = {
{ "dirsyntax", WARN_DIRSYNTAX },
{ NULL, 0 }
};
neg = 0;
if (arg[0] == 'n' && arg[1] == 'o') {
neg = 1;
arg += 2;
}
for (i = 0; options[i].option != NULL; i++)
if (strcmp(arg, options[i].option) == 0)
break;
if (options[i].option == NULL)
/* unknown option */
return (-1);
if (iscmd) {
if (!neg) {
warn_cmd |= options[i].flag;
warn_nocmd &= ~options[i].flag;
warn_flags |= options[i].flag;
} else {
warn_nocmd |= options[i].flag;
warn_cmd &= ~options[i].flag;
warn_flags &= ~options[i].flag;
}
} else {
if (!neg) {
warn_flags |= (options[i].flag & ~warn_nocmd);
} else {
warn_flags &= ~(options[i].flag | warn_cmd);
}
}
return (0);
}
/**
* Open and parse the given makefile.
*
* Results:
* TRUE if ok. FALSE if couldn't open file.
*/
static Boolean
ReadMakefile(const char p[])
{
char *fname, *fnamesave; /* makefile to read */
FILE *stream;
char *name, path[MAXPATHLEN];
char *MAKEFILE;
int setMAKEFILE;
/* XXX - remove this once constification is done */
fnamesave = fname = estrdup(p);
if (!strcmp(fname, "-")) {
Parse_File("(stdin)", stdin);
Var_SetGlobal("MAKEFILE", "");
} else {
setMAKEFILE = strcmp(fname, ".depend");
/* if we've chdir'd, rebuild the path name */
if (curdir != objdir && *fname != '/') {
snprintf(path, MAXPATHLEN, "%s/%s", curdir, fname);
/*
* XXX The realpath stuff breaks relative includes
* XXX in some cases. The problem likely is in
* XXX parse.c where it does special things in
* XXX ParseDoInclude if the file is relateive
* XXX or absolute and not a system file. There
* XXX it assumes that if the current file that's
* XXX being included is absolute, that any files
* XXX that it includes shouldn't do the -I path
* XXX stuff, which is inconsistant with historical
* XXX behavior. However, I can't pentrate the mists
* XXX further, so I'm putting this workaround in
* XXX here until such time as the underlying bug
* XXX can be fixed.
*/
#if THIS_BREAKS_THINGS
if (realpath(path, path) != NULL &&
(stream = fopen(path, "r")) != NULL) {
MAKEFILE = fname;
fname = path;
goto found;
}
} else if (realpath(fname, path) != NULL) {
MAKEFILE = fname;
fname = path;
if ((stream = fopen(fname, "r")) != NULL)
goto found;
}
#else
if ((stream = fopen(path, "r")) != NULL) {
MAKEFILE = fname;
fname = path;
goto found;
}
} else {
MAKEFILE = fname;
if ((stream = fopen(fname, "r")) != NULL)
goto found;
}
#endif
/* look in -I and system include directories. */
name = Path_FindFile(fname, &parseIncPath);
if (!name)
name = Path_FindFile(fname, &sysIncPath);
if (!name || !(stream = fopen(name, "r"))) {
free(fnamesave);
return (FALSE);
}
MAKEFILE = fname = name;
/*
* set the MAKEFILE variable desired by System V fans -- the
* placement of the setting here means it gets set to the last
* makefile specified, as it is set by SysV make.
*/
found:
if (setMAKEFILE)
Var_SetGlobal("MAKEFILE", MAKEFILE);
Parse_File(fname, stream);
}
free(fnamesave);
return (TRUE);
}
/**
* Open and parse the given makefile.
* If open is successful add it to the list of makefiles.
*
* Results:
* TRUE if ok. FALSE if couldn't open file.
*/
static Boolean
TryReadMakefile(const char p[])
{
char *data;
LstNode *last = Lst_Last(&source_makefiles);
if (!ReadMakefile(p))
return (FALSE);
data = estrdup(p);
if (last == NULL) {
LstNode *first = Lst_First(&source_makefiles);
Lst_Insert(&source_makefiles, first, data);
} else
Lst_Append(&source_makefiles, last, estrdup(p));
return (TRUE);
}
/**
* MainParseArgs
* Parse a given argument vector. Called from main() and from
* Main_ParseArgLine() when the .MAKEFLAGS target is used.
*
* XXX: Deal with command line overriding .MAKEFLAGS in makefile
*
* Side Effects:
* Various global and local flags will be set depending on the flags
* given
*/
static void
MainParseArgs(int argc, char **argv)
{
int c;
Boolean found_dd = FALSE;
rearg:
optind = 1; /* since we're called more than once */
optreset = 1;
#define OPTFLAGS "ABC:D:E:I:PSV:Xd:ef:ij:km:npqrstvx:"
for (;;) {
if ((optind < argc) && strcmp(argv[optind], "--") == 0) {
found_dd = TRUE;
}
if ((c = getopt(argc, argv, OPTFLAGS)) == -1) {
break;
}
switch(c) {
case 'A':
arch_fatal = FALSE;
MFLAGS_append("-A", NULL);
break;
case 'C':
if (chdir(optarg) == -1)
err(1, "chdir %s", optarg);
break;
case 'D':
Var_SetGlobal(optarg, "1");
MFLAGS_append("-D", optarg);
break;
case 'I':
Parse_AddIncludeDir(optarg);
MFLAGS_append("-I", optarg);
break;
case 'V':
Lst_AtEnd(&variables, estrdup(optarg));
MFLAGS_append("-V", optarg);
break;
case 'X':
expandVars = FALSE;
break;
case 'B':
compatMake = TRUE;
MFLAGS_append("-B", NULL);
unsetenv("MAKE_JOBS_FIFO");
break;
case 'P':
usePipes = FALSE;
MFLAGS_append("-P", NULL);
break;
case 'S':
keepgoing = FALSE;
MFLAGS_append("-S", NULL);
break;
case 'd': {
char *modules = optarg;
for (; *modules; ++modules)
switch (*modules) {
case 'A':
debug = ~0;
break;
case 'a':
debug |= DEBUG_ARCH;
break;
case 'c':
debug |= DEBUG_COND;
break;
case 'd':
debug |= DEBUG_DIR;
break;
case 'f':
debug |= DEBUG_FOR;
break;
case 'g':
if (modules[1] == '1') {
debug |= DEBUG_GRAPH1;
++modules;
}
else if (modules[1] == '2') {
debug |= DEBUG_GRAPH2;
++modules;
}
break;
case 'j':
debug |= DEBUG_JOB;
break;
case 'l':
debug |= DEBUG_LOUD;
break;
case 'm':
debug |= DEBUG_MAKE;
break;
case 's':
debug |= DEBUG_SUFF;
break;
case 't':
debug |= DEBUG_TARG;
break;
case 'v':
debug |= DEBUG_VAR;
break;
default:
warnx("illegal argument to d option "
"-- %c", *modules);
usage();
}
MFLAGS_append("-d", optarg);
break;
}
case 'E':
Lst_AtEnd(&envFirstVars, estrdup(optarg));
MFLAGS_append("-E", optarg);
break;
case 'e':
checkEnvFirst = TRUE;
MFLAGS_append("-e", NULL);
break;
case 'f':
Lst_AtEnd(&makefiles, estrdup(optarg));
break;
case 'i':
ignoreErrors = TRUE;
MFLAGS_append("-i", NULL);
break;
case 'j': {
char *endptr;
forceJobs = TRUE;
jobLimit = strtol(optarg, &endptr, 10);
if (jobLimit <= 0 || *endptr != '\0') {
warnx("illegal number, -j argument -- %s",
optarg);
usage();
}
MFLAGS_append("-j", optarg);
break;
}
case 'k':
keepgoing = TRUE;
MFLAGS_append("-k", NULL);
break;
case 'm':
Path_AddDir(&sysIncPath, optarg);
MFLAGS_append("-m", optarg);
break;
case 'n':
noExecute = TRUE;
MFLAGS_append("-n", NULL);
break;
case 'p':
printGraphOnly = TRUE;
debug |= DEBUG_GRAPH1;
break;
case 'q':
queryFlag = TRUE;
/* Kind of nonsensical, wot? */
MFLAGS_append("-q", NULL);
break;
case 'r':
noBuiltins = TRUE;
MFLAGS_append("-r", NULL);
break;
case 's':
beSilent = TRUE;
MFLAGS_append("-s", NULL);
break;
case 't':
touchFlag = TRUE;
MFLAGS_append("-t", NULL);
break;
case 'v':
beVerbose = TRUE;
MFLAGS_append("-v", NULL);
break;
case 'x':
if (Main_ParseWarn(optarg, 1) != -1)
MFLAGS_append("-x", optarg);
break;
default:
case '?':
usage();
}
}
argv += optind;
argc -= optind;
oldVars = TRUE;
/*
* Parse the rest of the arguments.
* o Check for variable assignments and perform them if so.
* o Check for more flags and restart getopt if so.
* o Anything else is taken to be a target and added
* to the end of the "create" list.
*/
for (; *argv != NULL; ++argv, --argc) {
if (Parse_IsVar(*argv)) {
char *ptr = MAKEFLAGS_quote(*argv);
char *v = estrdup(*argv);
Var_Append(".MAKEFLAGS", ptr, VAR_GLOBAL);
Parse_DoVar(v, VAR_CMD);
free(ptr);
free(v);
} else if ((*argv)[0] == '-') {
if ((*argv)[1] == '\0') {
/*
* (*argv) is a single dash, so we
* just ignore it.
*/
} else if (found_dd) {
/*
* Double dash has been found, ignore
* any more options. But what do we do
* with it? For now treat it like a target.
*/
Lst_AtEnd(&create, estrdup(*argv));
} else {
/*
* (*argv) is a -flag, so backup argv and
* argc. getopt() expects options to start
* in the 2nd position.
*/
argc++;
argv--;
goto rearg;
}
} else if ((*argv)[0] == '\0') {
Punt("illegal (null) argument.");
} else {
Lst_AtEnd(&create, estrdup(*argv));
}
}
}
/**
* Main_ParseArgLine
* Used by the parse module when a .MFLAGS or .MAKEFLAGS target
* is encountered and by main() when reading the .MAKEFLAGS envariable.
* Takes a line of arguments and breaks it into its
* component words and passes those words and the number of them to the
* MainParseArgs function.
* The line should have all its leading whitespace removed.
*
* Side Effects:
* Only those that come from the various arguments.
*/
void
Main_ParseArgLine(char *line, int mflags)
{
ArgArray aa;
if (line == NULL)
return;
for (; *line == ' '; ++line)
continue;
if (!*line)
return;
if (mflags)
MAKEFLAGS_break(&aa, line);
else
brk_string(&aa, line, TRUE);
MainParseArgs(aa.argc, aa.argv);
ArgArray_Done(&aa);
}
static char *
chdir_verify_path(const char *path, char *obpath)
{
struct stat sb;
if (stat(path, &sb) == 0 && S_ISDIR(sb.st_mode)) {
if (chdir(path) == -1 || getcwd(obpath, MAXPATHLEN) == NULL) {
warn("warning: %s", path);
return (NULL);
}
return (obpath);
}
return (NULL);
}
/**
* In lieu of a good way to prevent every possible looping in make(1), stop
* there from being more than MKLVL_MAXVAL processes forked by make(1), to
* prevent a forkbomb from happening, in a dumb and mechanical way.
*
* Side Effects:
* Creates or modifies enviornment variable MKLVL_ENVVAR via setenv().
*/
static void
check_make_level(void)
{
#ifdef WANT_ENV_MKLVL
char *value = getenv(MKLVL_ENVVAR);
int level = (value == NULL) ? 0 : atoi(value);
if (level < 0) {
errc(2, EAGAIN, "Invalid value for recursion level (%d).",
level);
} else if (level > MKLVL_MAXVAL) {
errc(2, EAGAIN, "Max recursion level (%d) exceeded.",
MKLVL_MAXVAL);
} else {
char new_value[32];
sprintf(new_value, "%d", level + 1);
setenv(MKLVL_ENVVAR, new_value, 1);
}
#endif /* WANT_ENV_MKLVL */
}
/**
* Main_AddSourceMakefile
* Add a file to the list of source makefiles
*/
void
Main_AddSourceMakefile(const char *name)
{
Lst_AtEnd(&source_makefiles, estrdup(name));
}
/**
* Remake_Makefiles
* Remake all the makefiles
*/
static void
Remake_Makefiles(void)
{
LstNode *ln;
int error_cnt = 0;
int remade_cnt = 0;
Compat_InstallSignalHandlers();
if (curdir != objdir) {
if (chdir(curdir) < 0)
Fatal("Failed to change directory to %s.", curdir);
}
LST_FOREACH(ln, &source_makefiles) {
LstNode *ln2;
struct GNode *gn;
const char *name = Lst_Datum(ln);
Boolean saveTouchFlag = touchFlag;
Boolean saveQueryFlag = queryFlag;
Boolean saveNoExecute = noExecute;
int mtime;
/*
* Create node
*/
gn = Targ_FindNode(name, TARG_CREATE);
DEBUGF(MAKE, ("Checking %s...", gn->name));
Suff_FindDeps(gn);
/*
* ! dependencies as well as
* dependencies with .FORCE, .EXEC and .PHONY attributes
* are skipped to prevent infinite loops
*/
if (gn->type & (OP_FORCE | OP_EXEC | OP_PHONY)) {
DEBUGF(MAKE, ("skipping (force, exec or phony).\n",
gn->name));
continue;
}
/*
* Skip :: targets that have commands and no children
* because such targets are always out-of-date
*/
if ((gn->type & OP_DOUBLEDEP) &&
!Lst_IsEmpty(&gn->commands) &&
Lst_IsEmpty(&gn->children)) {
DEBUGF(MAKE, ("skipping (doubledep, no sources "
"and has commands).\n"));
continue;
}
/*
* Skip targets without sources and without commands
*/
if (Lst_IsEmpty(&gn->commands) &&
Lst_IsEmpty(&gn->children)) {
DEBUGF(MAKE,
("skipping (no sources and no commands).\n"));
continue;
}
DEBUGF(MAKE, ("\n"));
/*
* -t, -q and -n has no effect unless the makefile is
* specified as one of the targets explicitly in the
* command line
*/
LST_FOREACH(ln2, &create) {
if (!strcmp(gn->name, Lst_Datum(ln2))) {
/* found as a target */
break;
}
}
if (ln2 == NULL) {
touchFlag = FALSE;
queryFlag = FALSE;
noExecute = FALSE;
}
/*
* Check and remake the makefile
*/
mtime = Dir_MTime(gn);
Compat_Make(gn, gn);
/*
* Restore -t, -q and -n behaviour
*/
touchFlag = saveTouchFlag;
queryFlag = saveQueryFlag;
noExecute = saveNoExecute;
/*
* Compat_Make will leave the 'made' field of gn
* in one of the following states:
* UPTODATE gn was already up-to-date
* MADE gn was recreated successfully
* ERROR An error occurred while gn was being created
* ABORTED gn was not remade because one of its inferiors
* could not be made due to errors.
*/
if (gn->made == MADE) {
if (mtime != Dir_MTime(gn)) {
DEBUGF(MAKE,
("%s updated (%d -> %d).\n",
gn->name, mtime, gn->mtime));
remade_cnt++;
} else {
DEBUGF(MAKE,
("%s not updated: skipping restart.\n",
gn->name));
}
} else if (gn->made == ERROR)
error_cnt++;
else if (gn->made == ABORTED) {
printf("`%s' not remade because of errors.\n",
gn->name);
error_cnt++;
} else if (gn->made == UPTODATE) {
Lst examine;
Lst_Init(&examine);
Lst_EnQueue(&examine, gn);
while (!Lst_IsEmpty(&examine)) {
LstNode *eln;
GNode *egn = Lst_DeQueue(&examine);
egn->make = FALSE;
LST_FOREACH(eln, &egn->children) {
GNode *cgn = Lst_Datum(eln);
Lst_EnQueue(&examine, cgn);
}
}
}
}
if (error_cnt > 0)
Fatal("Failed to remake Makefiles.");
if (remade_cnt > 0) {
DEBUGF(MAKE, ("Restarting `%s'.\n", save_argv[0]));
/*
* Some of makefiles were remade -- restart from clean state
*/
if (save_makeflags != NULL)
setenv("MAKEFLAGS", save_makeflags, 1);
else
unsetenv("MAKEFLAGS");
if (execvp(save_argv[0], save_argv) < 0) {
Fatal("Can't restart `%s': %s.",
save_argv[0], strerror(errno));
}
}
if (curdir != objdir) {
if (chdir(objdir) < 0)
Fatal("Failed to change directory to %s.", objdir);
}
}
/**
* main
* The main function, for obvious reasons. Initializes variables
* and a few modules, then parses the arguments give it in the
* environment and on the command line. Reads the system makefile
* followed by either Makefile, makefile or the file given by the
* -f argument. Sets the .MAKEFLAGS PMake variable based on all the
* flags it has received by then uses either the Make or the Compat
* module to create the initial list of targets.
*
* Results:
* If -q was given, exits -1 if anything was out-of-date. Else it exits
* 0.
*
* Side Effects:
* The program exits when done. Targets are created. etc. etc. etc.
*/
int
main(int argc, char **argv)
{
const char *machine;
const char *machine_arch;
const char *machine_cpu;
Boolean outOfDate = TRUE; /* FALSE if all targets up to date */
const char *p;
const char *pathp;
const char *path;
char mdpath[MAXPATHLEN];
char obpath[MAXPATHLEN];
char cdpath[MAXPATHLEN];
char *cp = NULL, *start;
save_argv = argv;
save_makeflags = getenv("MAKEFLAGS");
if (save_makeflags != NULL)
save_makeflags = estrdup(save_makeflags);
/*
* Initialize file global variables.
*/
expandVars = TRUE;
noBuiltins = FALSE; /* Read the built-in rules */
forceJobs = FALSE; /* No -j flag */
curdir = cdpath;
/*
* Initialize program global variables.
*/
beSilent = FALSE; /* Print commands as executed */
ignoreErrors = FALSE; /* Pay attention to non-zero returns */
noExecute = FALSE; /* Execute all commands */
printGraphOnly = FALSE; /* Don't stop after printing graph */
keepgoing = FALSE; /* Stop on error */
allPrecious = FALSE; /* Remove targets when interrupted */
queryFlag = FALSE; /* This is not just a check-run */
touchFlag = FALSE; /* Actually update targets */
usePipes = TRUE; /* Catch child output in pipes */
debug = 0; /* No debug verbosity, please. */
jobsRunning = FALSE;
jobLimit = DEFMAXJOBS;
compatMake = FALSE; /* No compat mode */
check_make_level();
#ifdef RLIMIT_NOFILE
/*
* get rid of resource limit on file descriptors
*/
{
struct rlimit rl;
if (getrlimit(RLIMIT_NOFILE, &rl) == -1) {
err(2, "getrlimit");
}
rl.rlim_cur = rl.rlim_max;
if (setrlimit(RLIMIT_NOFILE, &rl) == -1) {
err(2, "setrlimit");
}
}
#endif
/*
* Prior to 7.0, FreeBSD/pc98 kernel used to set the
* utsname.machine to "i386", and MACHINE was defined as
* "i386", so it could not be distinguished from FreeBSD/i386.
* Therefore, we had to check machine.ispc98 and adjust the
* MACHINE variable. NOTE: The code is still here to be able
* to compile new make binary on old FreeBSD/pc98 systems, and
* have the MACHINE variable set properly.
*/
if ((machine = getenv("MACHINE")) == NULL) {
int ispc98;
size_t len;
len = sizeof(ispc98);
if (!sysctlbyname("machdep.ispc98", &ispc98, &len, NULL, 0)) {
if (ispc98)
machine = "pc98";
}
}
/*
* Get the name of this type of MACHINE from utsname
* so we can share an executable for similar machines.
* (i.e. m68k: amiga hp300, mac68k, sun3, ...)
*
* Note that both MACHINE and MACHINE_ARCH are decided at
* run-time.
*/
if (machine == NULL) {
static struct utsname utsname;
if (uname(&utsname) == -1)
err(2, "uname");
machine = utsname.machine;
}
if ((machine_arch = getenv("MACHINE_ARCH")) == NULL) {
#ifdef MACHINE_ARCH
machine_arch = MACHINE_ARCH;
#else
machine_arch = "unknown";
#endif
}
/*
* Set machine_cpu to the minumum supported CPU revision based
* on the target architecture, if not already set.
*/
if ((machine_cpu = getenv("MACHINE_CPU")) == NULL) {
if (!strcmp(machine_arch, "i386"))
machine_cpu = "i386";
else if (!strcmp(machine_arch, "alpha"))
machine_cpu = "ev4";
else
machine_cpu = "unknown";
}
/*
* Initialize the parsing, directory and variable modules to prepare
* for the reading of inclusion paths and variable settings on the
* command line
*/
Proc_Init();
Dir_Init(); /* Initialize directory structures so -I flags
* can be processed correctly */
Var_Init(environ); /* As well as the lists of variables for
* parsing arguments */
/*
* Initialize the Shell so that we have a shell for != assignments
* on the command line.
*/
Shell_Init();
/*
* Initialize various variables.
* MAKE also gets this name, for compatibility
* .MAKEFLAGS gets set to the empty string just in case.
* MFLAGS also gets initialized empty, for compatibility.
*/
Var_SetGlobal("MAKE", argv[0]);
Var_SetGlobal(".MAKEFLAGS", "");
Var_SetGlobal("MFLAGS", "");
Var_SetGlobal("MACHINE", machine);
Var_SetGlobal("MACHINE_ARCH", machine_arch);
Var_SetGlobal("MACHINE_CPU", machine_cpu);
#ifdef MAKE_VERSION
Var_SetGlobal("MAKE_VERSION", MAKE_VERSION);
#endif
/*
* First snag things out of the MAKEFLAGS environment
* variable. Then parse the command line arguments.
*/
Main_ParseArgLine(getenv("MAKEFLAGS"), 1);
MainParseArgs(argc, argv);
/*
* Find where we are...
*/
if (getcwd(curdir, MAXPATHLEN) == NULL)
err(2, NULL);
{
struct stat sa;
if (stat(curdir, &sa) == -1)
err(2, "%s", curdir);
}
/*
* The object directory location is determined using the
* following order of preference:
*
* 1. MAKEOBJDIRPREFIX`cwd`
* 2. MAKEOBJDIR
* 3. PATH_OBJDIR.${MACHINE}
* 4. PATH_OBJDIR
* 5. PATH_OBJDIRPREFIX`cwd`
*
* If one of the first two fails, use the current directory.
* If the remaining three all fail, use the current directory.
*
* Once things are initted,
* have to add the original directory to the search path,
* and modify the paths for the Makefiles apropriately. The
* current directory is also placed as a variable for make scripts.
*/
if (!(pathp = getenv("MAKEOBJDIRPREFIX"))) {
if (!(path = getenv("MAKEOBJDIR"))) {
path = PATH_OBJDIR;
pathp = PATH_OBJDIRPREFIX;
snprintf(mdpath, MAXPATHLEN, "%s.%s", path, machine);
if (!(objdir = chdir_verify_path(mdpath, obpath)))
if (!(objdir=chdir_verify_path(path, obpath))) {
snprintf(mdpath, MAXPATHLEN,
"%s%s", pathp, curdir);
if (!(objdir=chdir_verify_path(mdpath,
obpath)))
objdir = curdir;
}
}
else if (!(objdir = chdir_verify_path(path, obpath)))
objdir = curdir;
}
else {
snprintf(mdpath, MAXPATHLEN, "%s%s", pathp, curdir);
if (!(objdir = chdir_verify_path(mdpath, obpath)))
objdir = curdir;
}
Dir_InitDot(); /* Initialize the "." directory */
if (objdir != curdir)
Path_AddDir(&dirSearchPath, curdir);
Var_SetGlobal(".ST_EXPORTVAR", "YES");
Var_SetGlobal(".CURDIR", curdir);
Var_SetGlobal(".OBJDIR", objdir);
if (getenv("MAKE_JOBS_FIFO") != NULL)
forceJobs = TRUE;
/*
* Be compatible if user did not specify -j and did not explicitly
* turned compatibility on
*/
if (!compatMake && !forceJobs)
compatMake = TRUE;
/*
* Initialize target and suffix modules in preparation for
* parsing the makefile(s)
*/
Targ_Init();
Suff_Init();
DEFAULT = NULL;
time(&now);
/*
* Set up the .TARGETS variable to contain the list of targets to be
* created. If none specified, make the variable empty -- the parser
* will fill the thing in with the default or .MAIN target.
*/
if (Lst_IsEmpty(&create)) {
Var_SetGlobal(".TARGETS", "");
} else {
LstNode *ln;
for (ln = Lst_First(&create); ln != NULL; ln = Lst_Succ(ln)) {
char *name = Lst_Datum(ln);
Var_Append(".TARGETS", name, VAR_GLOBAL);
}
}
/*
* If no user-supplied system path was given (through the -m option)
* add the directories from the DEFSYSPATH (more than one may be given
* as dir1:...:dirn) to the system include path.
*/
if (TAILQ_EMPTY(&sysIncPath)) {
char syspath[] = PATH_DEFSYSPATH;
for (start = syspath; *start != '\0'; start = cp) {
for (cp = start; *cp != '\0' && *cp != ':'; cp++)
continue;
if (*cp == '\0') {
Path_AddDir(&sysIncPath, start);
} else {
*cp++ = '\0';
Path_AddDir(&sysIncPath, start);
}
}
}
/*
* Read in the built-in rules first, followed by the specified
* makefile, if it was (makefile != (char *) NULL), or the default
* Makefile and makefile, in that order, if it wasn't.
*/
if (!noBuiltins) {
/* Path of sys.mk */
Lst sysMkPath = Lst_Initializer(sysMkPath);
LstNode *ln;
char defsysmk[] = PATH_DEFSYSMK;
Path_Expand(defsysmk, &sysIncPath, &sysMkPath);
if (Lst_IsEmpty(&sysMkPath))
Fatal("make: no system rules (%s).", PATH_DEFSYSMK);
LST_FOREACH(ln, &sysMkPath) {
if (!ReadMakefile(Lst_Datum(ln)))
break;
}
if (ln != NULL)
Fatal("make: cannot open %s.", (char *)Lst_Datum(ln));
Lst_Destroy(&sysMkPath, free);
}
if (!Lst_IsEmpty(&makefiles)) {
LstNode *ln;
LST_FOREACH(ln, &makefiles) {
if (!TryReadMakefile(Lst_Datum(ln)))
break;
}
if (ln != NULL)
Fatal("make: cannot open %s.", (char *)Lst_Datum(ln));
} else if (!TryReadMakefile("BSDmakefile"))
if (!TryReadMakefile("makefile"))
TryReadMakefile("Makefile");
ReadMakefile(".depend");
/* Install all the flags into the MAKEFLAGS envariable. */
if (((p = Var_Value(".MAKEFLAGS", VAR_GLOBAL)) != NULL) && *p)
setenv("MAKEFLAGS", p, 1);
else
setenv("MAKEFLAGS", "", 1);
/*
* For compatibility, look at the directories in the VPATH variable
* and add them to the search path, if the variable is defined. The
* variable's value is in the same format as the PATH envariable, i.e.
* <directory>:<directory>:<directory>...
*/
if (Var_Exists("VPATH", VAR_CMD)) {
/*
* GCC stores string constants in read-only memory, but
* Var_Subst will want to write this thing, so store it
* in an array
*/
static char VPATH[] = "${VPATH}";
Buffer *buf;
char *vpath;
char *ptr;
char savec;
buf = Var_Subst(VPATH, VAR_CMD, FALSE);
vpath = Buf_Data(buf);
do {
/* skip to end of directory */
for (ptr = vpath; *ptr != ':' && *ptr != '\0'; ptr++)
;
/* Save terminator character so know when to stop */
savec = *ptr;
*ptr = '\0';
/* Add directory to search path */
Path_AddDir(&dirSearchPath, vpath);
vpath = ptr + 1;
} while (savec != '\0');
Buf_Destroy(buf, TRUE);
}
/*
* Now that all search paths have been read for suffixes et al, it's
* time to add the default search path to their lists...
*/
Suff_DoPaths();
/* print the initial graph, if the user requested it */
if (DEBUG(GRAPH1))
Targ_PrintGraph(1);
/* print the values of any variables requested by the user */
if (Lst_IsEmpty(&variables) && !printGraphOnly) {
/*
* Since the user has not requested that any variables
* be printed, we can build targets.
*
* Have read the entire graph and need to make a list of targets
* to create. If none was given on the command line, we consult
* the parsing module to find the main target(s) to create.
*/
Lst targs = Lst_Initializer(targs);
if (!is_posix && mfAutoDeps) {
/*
* Check if any of the makefiles are out-of-date.
*/
Remake_Makefiles();
}
if (Lst_IsEmpty(&create))
Parse_MainName(&targs);
else
Targ_FindList(&targs, &create, TARG_CREATE);
if (compatMake) {
/*
* Compat_Init will take care of creating
* all the targets as well as initializing
* the module.
*/
Compat_Run(&targs);
outOfDate = 0;
} else {
/*
* Initialize job module before traversing
* the graph, now that any .BEGIN and .END
* targets have been read. This is done
* only if the -q flag wasn't given (to
* prevent the .BEGIN from being executed
* should it exist).
*/
if (!queryFlag) {
Job_Init(jobLimit);
jobsRunning = TRUE;
}
/* Traverse the graph, checking on all the targets */
outOfDate = Make_Run(&targs);
}
Lst_Destroy(&targs, NOFREE);
} else {
Var_Print(&variables, expandVars);
}
Lst_Destroy(&variables, free);
Lst_Destroy(&makefiles, free);
Lst_Destroy(&source_makefiles, free);
Lst_Destroy(&create, free);
/* print the graph now it's been processed if the user requested it */
if (DEBUG(GRAPH2))
Targ_PrintGraph(2);
if (queryFlag)
return (outOfDate);
if (makeErrors != 0)
Finish(makeErrors);
return (0);
}
|