summaryrefslogtreecommitdiff
path: root/source3/wscript
blob: 3c8df0a0769bb5c3d165e339712eb6ac515f3c45 (plain)
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
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
#! /usr/bin/env python

srcdir=".."

import sys, os
from optparse import SUPPRESS_HELP
sys.path.insert(0, srcdir+"/buildtools/wafsamba")
sys.path.insert(0, "source3")
import wafsamba, Options, Logs, Utils, Scripting
import build.charset
import samba_utils, samba_version
import samba3

Options.default_prefix = '/usr/local/samba'

def set_options(opt):

    opt.add_option('--with-static-modules',
                   help=("Comma-separated list of names of modules to statically link in"),
                   action="store", dest='static_modules', default=None)
    opt.add_option('--with-shared-modules',
                   help=("Comma-separated list of names of modules to build shared"),
                   action="store", dest='shared_modules', default=None)
    opt.add_option('--enable-selftest',
                  help=("enable options necessary for selftest"),
                  action="store_true", dest='enable_selftest', default=False)

    opt.SAMBA3_ADD_OPTION('winbind')
    opt.SAMBA3_ADD_OPTION('swat')
    opt.SAMBA3_ADD_OPTION('ads')
    opt.SAMBA3_ADD_OPTION('mit-krb5-checks', default=False)
    opt.SAMBA3_ADD_OPTION('ldap')
    opt.SAMBA3_ADD_OPTION('cups', with_name="enable", without_name="disable")
    opt.SAMBA3_ADD_OPTION('iprint', with_name="enable", without_name="disable")
    opt.SAMBA3_ADD_OPTION('pam')
    opt.SAMBA3_ADD_OPTION('pam_smbpass')
    opt.SAMBA3_ADD_OPTION('quotas')
    opt.SAMBA3_ADD_OPTION('sys-quotas')
    opt.SAMBA3_ADD_OPTION('sendfile-support')
    opt.SAMBA3_ADD_OPTION('utmp')
    opt.SAMBA3_ADD_OPTION('pthreadpool', with_name="enable", without_name="disable")
    opt.SAMBA3_ADD_OPTION('avahi', with_name="enable", without_name="disable")
    opt.SAMBA3_ADD_OPTION('iconv')
    opt.SAMBA3_ADD_OPTION('acl-support')
    opt.SAMBA3_ADD_OPTION('dnsupdate')
    opt.SAMBA3_ADD_OPTION('syslog')
    opt.SAMBA3_ADD_OPTION('automount')
    opt.SAMBA3_ADD_OPTION('aio-support')
    opt.SAMBA3_ADD_OPTION('profiling-data', default=False)

    opt.SAMBA3_ADD_OPTION('cluster-support')

    opt.add_option('--with-ctdb-dir',
                   help=("Directory under which ctdb is installed"),
                   action="store", dest='ctdb_dir', default=None)
    opt.add_option('--enable-old-ctdb',
                  help=("enable building against (too) old version of ctdb (default=false)"),
                  action="store_true", dest='enable_old_ctdb', default=False)



def configure(conf):
    from samba_utils import TO_LIST

    if Options.options.developer:
        conf.ADD_CFLAGS('-DDEVELOPER -DDEBUG_PASSWORD')
        conf.env.developer = True

    if Options.options.with_swat:
        conf.env['build_swat'] = True

    if sys.platform != 'openbsd5':
        conf.ADD_LDFLAGS("-Wl,--export-dynamic", testflags=True)

    conf.CHECK_HEADERS('execinfo.h libexc.h libunwind.h netdb.h')
    conf.CHECK_HEADERS('linux/falloc.h')

    conf.CHECK_FUNCS('getcwd fchown chmod fchmod mknod')
    conf.CHECK_FUNCS('strtol strchr strupr chflags')
    conf.CHECK_FUNCS('getrlimit fsync fdatasync setpgid')
    conf.CHECK_FUNCS('setsid glob strpbrk crypt16 getauthuid')
    conf.CHECK_FUNCS('sigprocmask sigblock sigaction sigset innetgr')
    conf.CHECK_FUNCS('initgroups select poll rdchk getgrnam getgrent pathconf')
    conf.CHECK_FUNCS('setpriv setgidx setuidx setgroups sysconf')
    conf.CHECK_FUNCS('atexit grantpt fallocate posix_fallocate')
    conf.CHECK_FUNCS('fseeko setluid')
    conf.CHECK_FUNCS('getpwnam', headers='sys/types.h pwd.h')
    conf.CHECK_FUNCS('fdopendir')
    conf.CHECK_FUNCS('getpwent_r setenv strcasecmp fcvt fcvtl')
    conf.CHECK_FUNCS('syslog vsyslog timegm setlocale')
    conf.CHECK_FUNCS_IN('nanosleep', 'rt')
    conf.CHECK_FUNCS('lutimes futimes utimensat futimens')
    conf.CHECK_FUNCS('mlock munlock mlockall munlockall')
    conf.CHECK_FUNCS('memalign posix_memalign hstrerror')
    conf.CHECK_FUNCS('shmget')
    conf.CHECK_FUNCS_IN('shm_open', 'rt', checklibc=True)
    conf.CHECK_FUNCS('gettext dgettext bindtextdomain textdomain bind_textdomain_codeset')
    #FIXME: for some reason this one still fails
    conf.CHECK_FUNCS_IN('yp_get_default_domain', 'nsl')
    conf.CHECK_FUNCS_IN('dn_expand _dn_expand __dn_expand', 'resolv')
    conf.CHECK_DECLS('fdatasync', reverse=True)
    conf.CHECK_DECLS('readahead', reverse=True, headers='fcntl.h')

    if conf.CONFIG_SET('HAVE_LONG_LONG'):
        conf.DEFINE('HAVE_LONGLONG', 1)

    if conf.CHECK_CODE('''
#if defined(HAVE_UNISTD_H)
#include <unistd.h>
#endif
long ret = splice(0,0,1,0,400,0);
''',
        'HAVE_LINUX_SPLICE',
        headers='fcntl.h'):
        conf.CHECK_DECLS('splice', reverse=True, headers='fcntl.h')

    # Check for inotify support
    conf.CHECK_HEADERS('linux/inotify.h asm/unistd.h sys/inotify.h')
    conf.CHECK_FUNCS('inotify_init')
    if "HAVE_INOTIFY_INIT" in conf.env:
        if "HAVE_LINUX_INOTIFY_H" in conf.env or "HAVE_SYS_INOTIFY_H" in conf.env:
            conf.DEFINE('HAVE_INOTIFY', 1)

    # Check for kernel change notify support
    conf.CHECK_CODE('''
#ifndef F_NOTIFY
#define F_NOTIFY 1026
#endif
main() {
        exit(fcntl(open("/tmp", O_RDONLY), F_NOTIFY, 0) == -1 ?  1 : 0);
}''', 'HAVE_KERNEL_CHANGE_NOTIFY', addmain=False, execute=True,
        headers='fcntl.h signal.h',
        msg="Checking for kernel change notify support")

    # Check for Linux kernel oplocks
    conf.CHECK_CODE('''
#include <sys/types.h>
#include <fcntl.h>
#include <signal.h>
#ifndef F_NOTIFY
#define F_NOTIFY 1026
#endif
main() {
        exit(fcntl(open("/tmp", O_RDONLY), F_NOTIFY, 0) == -1 ?  1 : 0);
}''', 'HAVE_KERNEL_OPLOCKS_LINUX', addmain=False, execute=True,
        msg="Checking for Linux kernel oplocks")

    # Check for IRIX kernel oplock types
    conf.CHECK_CODE('oplock_stat_t t; t.os_state = OP_REVOKE; t.os_dev = 1; t.os_ino = 1;',
                    'HAVE_KERNEL_OPLOCKS_IRIX', headers='fcntl.h',
                    msg="Checking for IRIX kernel oplock types")

    # Check for kernel share modes
    conf.CHECK_CODE('''
#include <sys/types.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/file.h>
#ifndef LOCK_MAND
#define LOCK_MAND        32
#define LOCK_READ        64
#endif
main() {
        exit(flock(open("/dev/null", O_RDWR), LOCK_MAND|LOCK_READ) != 0);
}''', 'HAVE_KERNEL_SHARE_MODES', addmain=False, execute=True,
        msg="Checking for krenel share modes")

    # Check for various members of the stat structure
    conf.CHECK_TYPES('blksize_t blkcnt_t')
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_blocks', define='HAVE_STAT_ST_BLOCKS',
                                headers='sys/stat.h')
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_blksize', define='HAVE_STAT_ST_BLKSIZE',
                                headers='sys/stat.h')
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_flags', define='HAVE_STAT_ST_FLAGS',
                                headers='sys/types.h sys/stat.h unistd.h')

    if "HAVE_BLKCNT_T" in conf.env:
	conf.CHECK_CODE('''
	return sizeof(blkcnt_t) == 4 ? 0 : 1''',
		'SIZEOF_BLKCNT_T_4', execute=True,
		headers='replace.h sys/types.h sys/stat.h unistd.h',
		msg="Checking whether blkcnt_t is 32 bit")

    if "HAVE_BLKCNT_T" in conf.env:
	conf.CHECK_CODE('''
	return sizeof(blkcnt_t) == 8 ? 0 : 1''',
		'SIZEOF_BLKCNT_T_8', execute=True,
		headers='replace.h sys/types.h sys/stat.h unistd.h',
		msg="Checking whether blkcnt_t is 64 bit")

    # Check for POSIX capability support
    conf.CHECK_FUNCS_IN('cap_get_proc', 'cap', headers='sys/capability.h')

    if "HAVE_SYS_CAPABILITY_H" in conf.env:
        conf.CHECK_CODE('''
        cap_t cap;
        cap_value_t vals[1];
        if (!(cap = cap_get_proc())) exit(1);
        vals[0] = CAP_CHOWN;
        cap_set_flag(cap, CAP_INHERITABLE, 1, vals, CAP_CLEAR);
        cap_set_proc(cap);''',
                        'HAVE_POSIX_CAPABILITIES', execute=True, lib="cap",
                        headers='sys/capability.h',
                        msg="Checking whether POSIX capabilities are available")

    # Check for int16, uint16, int32 and uint32 in rpc/types.h included from
    # rpc/rpc.h. This is *really* broken but some systems (DEC OSF1) do this.
    # -- JRA.
    if conf.CONFIG_SET("HAVE_RPC_RPC_H"):
        conf.CHECK_TYPE('int16', headers='rpc/rpc.h',
                        define='HAVE_INT16_FROM_RPC_RPC_H',
                        msg="Checking for int16 typedef included by rpc/rpc.h")
        conf.CHECK_CODE('uint16 testvar;', 'HAVE_INT16_FROM_RPC_RPC_H',
                        headers='sys/types.h rpc/rpc.h',
                        msg="Checking for uint16 typedef included by rpc/rpc.h")
        conf.CHECK_CODE('int32 testvar;', 'HAVE_INT16_FROM_RPC_RPC_H',
                        headers='sys/types.h rpc/rpc.h',
                        msg="Checking for int32 typedef included by rpc/rpc.h")
        conf.CHECK_CODE('uint32 testvar;', 'HAVE_INT16_FROM_RPC_RPC_H',
                        headers='sys/types.h rpc/rpc.h',
                        msg="Checking for uint32 typedef included by rpc/rpc.h")
    conf.CHECK_CODE('int i;', 'BROKEN_NISPLUS_INCLUDE_FILES',
                    headers='sys/types.h sys/acl.h rpcsvc/nis.h',
                    msg="Checking for broken nisplus include files")

    # Check if the compiler will optimize out functions
    conf.CHECK_CODE('''
if (0) {
    this_function_does_not_exist();
} else {
    return 1;
}''', 'HAVE_COMPILER_WILL_OPTIMIZE_OUT_FNS',
        msg="Checking if the compiler will optimize out functions")

    # Check if the compiler supports the LL suffix on long long integers
    # AIX needs this
    conf.CHECK_CODE('long long i = 0x8000000000LL', 'COMPILER_SUPPORTS_LL',
                    headers='stdio.h',
                    msg="Checking for LL suffix on long long integers")

    conf.CHECK_FUNCS('''
_acl __acl add_proplist_entry atexit attr_getf attr_list attr_listf
attropen attr_remove attr_removef attr_set attr_setf
bindtextdomain _chdir __chdir chflags chmod _close __close _closedir
__closedir crypt16 delproplist devnm dgettext dirfd
DNSServiceRegister _dup __dup _dup2 __dup2 endmntent execl
extattr_delete_fd extattr_get_fd extattr_get_file
extattr_list_fd extattr_list_file
extattr_set_fd extattr_set_file _facl __facl _fchdir
__fchdir fchmod fchown _fcntl __fcntl fcvt fcvtl fdatasync
fdelproplist fgetea fgetproplist fgetxattr flistea flistxattr
_fork __fork fremoveea fremovexattr fseeko fsetea
fsetproplist fsetxattr _fstat __fstat fsync
futimens futimes __fxstat getauthuid
getcwd _getcwd __getcwd getdents __getdents getdirentries
getgrent getgrnam getgrouplist getgrset getmntent getpagesize
getproplist get_proplist_entry getpwanam getpwent_r getrlimit gettext
glob grantpt hstrerror initgroups innetgr
inotify_init listea listxattr
llseek _llseek __llseek _lseek __lseek
_lstat __lstat lutimes
__lxstat memalign mknod mlock mlockall munlock munlockall
_open __open _opendir __opendir
pathconf poll posix_fallocate
posix_memalign prctl pread _pread __pread
pwrite _pwrite __pwrite
rdchk _read __read _readdir __readdir
removeea removexattr _seekdir __seekdir
select setea setenv setgidx setgroups setlocale setluid
setmntent setpgid setpriv setproplist setsid setuidx
setxattr shmget shm_open sigaction sigblock sigprocmask sigset
sizeof_proplist_entry _stat __stat statvfs
strcasecmp strchr strpbrk strsignal strtol strupr sysconf sysctl sysctlbyname
__sys_llseek syslog _telldir __telldir textdomain timegm
utimensat vsyslog _write __write __xstat
''')

    conf.CHECK_SAMBA3_CHARSET() # see build/charset.py

    # FIXME: these should be tests for features, but the old build system just
    # checks for OSes.
    host_os = sys.platform
    Logs.info("building on %s" % host_os)

    # Python doesn't have case switches... :/
    # FIXME: original was *linux* | gnu* | k*bsd*-gnu | kopensolaris*-gnu | *qnx*)
    # the search for .rfind('gnu') covers gnu* and *-gnu is that too broad?

    conf.SET_TARGET_TYPE('sunacl', 'EMPTY')
    if (host_os.rfind('linux') > -1) or (host_os.rfind('gnu') > -1) or (host_os.rfind('qnx') > -1):
        if host_os.rfind('linux') > -1:
            conf.DEFINE('LINUX', '1')
        elif host_os.rfind('qnx') > -1:
            conf.DEFINE('QNX', '1')
        conf.DEFINE('STAT_ST_BLOCKSIZE', '512')
    elif (host_os.rfind('darwin') > -1):
        conf.DEFINE('DARWINOS', 1)
        conf.DEFINE('STAT_ST_BLOCKSIZE', '512')
        conf.ADD_CFLAGS('-fno-common')
    elif (host_os.rfind('freebsd') > -1):
        if conf.CHECK_HEADERS('sunacl.h'):
            conf.DEFINE('HAVE_FREEBSD_SUNACL_H', '1')
            conf.CHECK_FUNCS_IN('acl', 'sunacl')
        conf.DEFINE('STAT_ST_BLOCKSIZE', '512')
    elif (host_os.rfind('netbsd') > -1):
        conf.DEFINE('STAT_ST_BLOCKSIZE', '512')
    elif (host_os.rfind('openbsd') > -1):
        conf.DEFINE('STAT_ST_BLOCKSIZE', '512')
    elif (host_os.rfind('sunos') > -1):
        conf.DEFINE('STAT_ST_BLOCKSIZE', '512')
    # FIXME: Add more checks here.
    else:
        Logs.warn("Unknown host_os '%s', please report this to samba-technical@samba.org" % host_os)

    #FIXME: add more checks
    if Options.options.with_acl_support:
        if host_os.rfind('linux') > -1:
            conf.CHECK_FUNCS_IN('acl_get_file', 'acl')
            conf.CHECK_FUNCS_IN('getxattr', 'attr')
            if conf.CHECK_CODE('''
acl_t acl;
int entry_id;
acl_entry_t *entry_p;
return acl_get_entry(acl, entry_id, entry_p);
''',
                        'HAVE_POSIX_ACLS',
                        headers='sys/types.h sys/acl.h', link=False,
                        msg="Checking for POSIX ACL support") :
                conf.CHECK_CODE('''
acl_permset_t permset_d;
acl_perm_t perm;
return acl_get_perm_np(permset_d, perm);
''',
                        'HAVE_ACL_GET_PERM_NP',
                        headers='sys/types.h sys/acl.h', link=True,
                        msg="Checking whether acl_get_perm_np() is available")
        else:
            conf.DEFINE('HAVE_NO_ACLS', 1)
            conf.SET_TARGET_TYPE('acl', 'EMPTY')
    else:
        conf.DEFINE('HAVE_NO_ACLS', 1)
        conf.SET_TARGET_TYPE('acl', 'EMPTY')

    if conf.CHECK_FUNCS('dirfd'):
        conf.DEFINE('HAVE_DIRFD_DECL', 1)

    conf.CHECK_CODE('struct statfs fsd; fsid_t fsid = fsd.f_fsid; return statfs(".", &fsd);',
                    'HAVE_STATFS_F_FSID',
                    msg="vfs_fileid: checking for statfs() and struct statfs.f_fsid",
                    headers='sys/types.h sys/statfs.h',
                    execute=True)

    if conf.CONFIG_SET('HAVE_FALLOCATE'):
        conf.CHECK_CODE('''
                int ret = fallocate(0, FALLOC_FL_KEEP_SIZE, 0, 10);''',
                'HAVE_LINUX_FALLOCATE',
                msg="Checking whether the Linux 'fallocate' function is available",
                headers='unistd.h sys/types.h fcntl.h linux/falloc.h')
    conf.CHECK_CODE('''
                ssize_t err = readahead(0,0,0x80000);''',
                'HAVE_LINUX_READAHEAD',
                msg="Checking whether Linux readahead is available",
                headers='unistd.h fcntl.h')
    conf.CHECK_DECLS('readahead', headers='fcntl.h', always=True)

    if Options.options.with_aio_support:
        conf.CHECK_FUNCS_IN('aio_read', 'aio')
        conf.CHECK_FUNCS_IN('aio_read', 'rt')
        conf.CHECK_CODE('struct aiocb a; return aio_read(&a);',
                        'HAVE_AIO',
                        msg='Checking for asynchronous io support',
                        headers='sys/types.h aio.h',
                        lib='aio rt')
        if conf.CONFIG_SET('HAVE_AIO'):
            conf.DEFINE('WITH_AIO', '1')
        if conf.CONFIG_SET('HAVE_AIO'):
            conf.CHECK_CODE('struct aiocb a; return aio_read(&a);', 'HAVE_AIO_READ', msg='Checking for aio_read', headers='aio.h', lib='aio rt')
            conf.CHECK_CODE('struct aiocb a; return aio_write(&a);', 'HAVE_AIO_WRITE', msg='Checking for aio_write', headers='aio.h', lib='aio rt')
            conf.CHECK_CODE('struct aiocb a; return aio_fsync(1, &a);', 'HAVE_AIO_FSYNC', msg='Checking for aio_fsync', headers='aio.h', lib='aio rt')
            conf.CHECK_CODE('struct aiocb a; return aio_return(&a);', 'HAVE_AIO_RETURN', msg='Checking for aio_return', headers='aio.h', lib='aio rt')
            conf.CHECK_CODE('struct aiocb a; return aio_error(&a);', 'HAVE_AIO_ERROR', msg='Checking for aio_error', headers='aio.h', lib='aio rt')
            conf.CHECK_CODE('struct aiocb a; return aio_cancel(1, &a);', 'HAVE_AIO_CANCEL', msg='Checking for aio_cancel', headers='aio.h', lib='aio rt')
            conf.CHECK_CODE('struct aiocb a; return aio_suspend(&a, 1, NULL);', 'HAVE_AIO_SUSPEND', msg='Checking for aio_suspend', headers='aio.h', lib='aio rt')
        if not conf.CONFIG_SET('HAVE_AIO'):
            conf.DEFINE('HAVE_NO_AIO', '1')
    else:
        conf.DEFINE('HAVE_NO_AIO', '1')

    conf.CHECK_CODE('''
struct msghdr msg;
union {
        struct cmsghdr cm;
        char control[CMSG_SPACE(sizeof(int))];
} control_un;
msg.msg_control = control_un.control;
msg.msg_controllen = sizeof(control_un.control);
''',
        'HAVE_MSGHDR_MSG_CONTROL',
        msg='Checking if we can use msg_control for passing file descriptors',
        headers='sys/types.h stdlib.h stddef.h sys/socket.h sys/un.h')
    conf.CHECK_CODE('''
struct msghdr msg;
int fd;
msg.msg_acctrights = (caddr_t) &fd;
msg.msg_acctrightslen = sizeof(fd);
''',
        'HAVE_MSGHDR_MSG_ACCTRIGHTS',
        msg='Checking if we can use msg_acctrights for passing file descriptors',
        headers='sys/types.h stdlib.h stddef.h sys/socket.h sys/un.h')

    if Options.options.with_winbind:
        conf.env.build_winbind = True
        conf.DEFINE('WITH_WINBIND', '1')

    conf.find_program('awk', var='AWK')
    conf.find_program('perl', var='PERL')

    # Darwin has extra options to xattr-family functions
    conf.CHECK_CODE('getxattr(0, 0, 0, 0, 0, 0);',
                    'XATTR_ADD_OPT',
                    msg="Checking whether xattr interface takes additional options",
                    headers='sys/types.h attr/xattr.h sys/xattr.h')

    conf.CHECK_HEADERS('asm/types.h')

    conf.CHECK_CODE('dev_t dev; int i = major(dev); return 0', "HAVE_DEVICE_MAJOR_FN",
                    headers='unistd.h sys/types.h',
                    msg="Checking for major macro")

    conf.CHECK_CODE('dev_t dev; int i = minor(dev); return 0', "HAVE_DEVICE_MINOR_FN",
                    headers='unistd.h sys/types.h',
                    msg="Checking for minor macro")

    conf.CHECK_STRUCTURE_MEMBER('struct dirent', 'd_off',
                                headers='unistd.h sys/types.h dirent.h',
                                define='HAVE_DIRENT_D_OFF')

    conf.CHECK_FUNCS('setnetgrent getnetgrent endnetgrent')
    if conf.CHECK_CFLAGS('-Werror-implicit-function-declaration'):
        netgrent_cflags = '-Werror-implicit-function-declaration'
    else:
        netgrent_cflags = ''
    conf.CHECK_CODE('setnetgrent("foo")', 'HAVE_SETNETGRENT_PROTOTYPE',
                    msg="Checking for setnetgrent prototype",
                    headers='netdb.h netgroup.h',
                    cflags=netgrent_cflags)
    conf.CHECK_CODE('getnetgrent', 'HAVE_GETNETGRENT_PROTOTYPE',
                    msg="Checking for getnetgrent prototype",
                    headers='netdb.h netgroup.h',
                    cflags=netgrent_cflags)
    conf.CHECK_CODE('endnetgrent', 'HAVE_ENDNETGRENT_PROTOTYPE',
                    msg="Checking for endnetgrent prototype",
                    headers='netdb.h netgroup.h',
                    cflags=netgrent_cflags)


    # Look for CUPS
    if Options.options.with_cups:
        conf.find_program('cups-config', var='CUPS_CONFIG')
        if conf.env.CUPS_CONFIG:
            # we would normally use --libs here, but cups-config incorrectly adds
            # gssapi_krb5 and other libraries to its --libs output. That breaks the use
            # of an in-tree heimdal kerberos
            conf.check_cfg(path=conf.env.CUPS_CONFIG, args="--cflags --ldflags",
                           package="", uselib_store="CUPS")
        conf.CHECK_HEADERS('cups/cups.h cups/language.h', lib='cups')
        conf.CHECK_FUNCS_IN('httpConnect httpConnectEncrypt', 'cups')
        if conf.CONFIG_SET('HAVE_CUPS_CUPS_H') and conf.CONFIG_SET('HAVE_CUPS_LANGUAGE_H'):
            conf.DEFINE('HAVE_CUPS', '1')
        else:
            conf.undefine('HAVE_CUPS')
            conf.SET_TARGET_TYPE('cups', 'EMPTY')
    else:
        # define an empty subsystem for cups, to allow it to be used as an empty dependency
        conf.SET_TARGET_TYPE('cups', 'EMPTY')

    if Options.options.with_iprint:
        if conf.CONFIG_SET('HAVE_CUPS'):
            conf.DEFINE('HAVE_IPRINT', '1')
        else:
            Logs.warn("--enable-iprint=yes but cups support not sufficient")
    if Options.options.with_syslog:
        conf.DEFINE('WITH_SYSLOG', '1')
    if Options.options.with_automount:
        conf.DEFINE('WITH_AUTOMOUNT', '1')

    # Check for LDAP
    if Options.options.with_ldap:
        conf.CHECK_HEADERS('ldap.h lber.h ldap_pvt.h')
        conf.CHECK_TYPE('ber_tag_t', 'unsigned int', headers='ldap.h lber.h')
        conf.CHECK_FUNCS_IN('ber_scanf ber_sockbuf_add_io', 'lber')
        conf.CHECK_VARIABLE('LDAP_OPT_SOCKBUF', headers='ldap.h')

        # if we LBER_OPT_LOG_PRINT_FN we can intercept ldap logging and print it out
        # for the samba logs
        conf.CHECK_VARIABLE('LBER_OPT_LOG_PRINT_FN',
                            define='HAVE_LBER_LOG_PRINT_FN', headers='lber.h')

        conf.CHECK_FUNCS_IN('ldap_init ldap_init_fd ldap_initialize ldap_set_rebind_proc', 'ldap')
        conf.CHECK_FUNCS_IN('ldap_add_result_entry', 'ldap')

        # Check if ldap_set_rebind_proc() takes three arguments
        if conf.CHECK_CODE('ldap_set_rebind_proc(0, 0, 0)',
                           'LDAP_SET_REBIND_PROC_ARGS',
                           msg="Checking whether ldap_set_rebind_proc takes 3 arguments",
                           headers='ldap.h lber.h', link=False):
            conf.DEFINE('LDAP_SET_REBIND_PROC_ARGS', '3')
        else:
            conf.DEFINE('LDAP_SET_REBIND_PROC_ARGS', '2')

        # last but not least, if ldap_init() exists, we want to use ldap
        if conf.CONFIG_SET('HAVE_LDAP_INIT'):
            conf.DEFINE('HAVE_LDAP', '1')
            conf.DEFINE('LDAP_DEPRECATED', '1')
            conf.env['HAVE_LDAP'] = '1'
            # if ber_sockbuf_add_io() and LDAP_OPT_SOCKBUF are available, we can add
            # SASL wrapping hooks
            if conf.CONFIG_SET('HAVE_BER_SOCKBUF_ADD_IO') and \
                    conf.CONFIG_SET('HAVE_LDAP_OPT_SOCKBUF'):
                conf.DEFINE('HAVE_LDAP_SASL_WRAPPING', '1')
    else:
        conf.SET_TARGET_TYPE('ldap', 'EMPTY')
        conf.SET_TARGET_TYPE('lber', 'EMPTY')

    # Check for kerberos
    have_gssapi=False
    if Options.options.with_mit_krb5_checks and conf.env.developer:
        Logs.info("Looking for kerberos features")
        conf.find_program('krb5-config', var='KRB5_CONFIG')
        if conf.env.KRB5_CONFIG:
            conf.check_cfg(path="krb5-config", args="--cflags --libs",
                       package="gssapi", uselib_store="KRB5")
        conf.CHECK_HEADERS('krb5.h krb5/locate_plugin.h', lib='krb5')
        conf.CHECK_HEADERS('gssapi.h gssapi/gssapi_generic.h gssapi/gssapi.h gssapi/gssapi_ext.h gssapi/gssapi_krb5.h com_err.h', lib='krb5')

        if conf.CONFIG_SET('HAVE_KRB5_LOCATE_PLUGIN_H'):
            conf.env['WINBIND_KRB5_LOCATOR'] = 'bin/winbind_krb5_locator.so'

        conf.CHECK_FUNCS_IN('_et_list', 'com_err')
        conf.CHECK_FUNCS_IN('krb5_encrypt_data', 'k5crypto')
        conf.CHECK_FUNCS_IN('des_set_key','crypto')
        conf.CHECK_FUNCS_IN('copy_Authenticator', 'asn1')
        conf.CHECK_FUNCS_IN('roken_getaddrinfo_hostspec', 'roken')
        if conf.CHECK_FUNCS_IN('gss_display_status', 'gssapi') or \
           conf.CHECK_FUNCS_IN('gss_display_status', 'gssapi_krb5'):
            have_gssapi=True
        conf.CHECK_FUNCS_IN('''
               gss_wrap_iov
               gss_krb5_import_cred
               gss_get_name_attribute
               gss_mech_krb5
               gss_oid_equal
               gss_inquire_sec_context_by_oid
               gsskrb5_extract_authz_data_from_sec_context
               gss_krb5_export_lucid_sec_context
               ''', 'gssapi gssapi_krb5 krb5')
        conf.CHECK_FUNCS_IN('krb5_mk_req_extended krb5_kt_compare', 'krb5')
        conf.CHECK_FUNCS('''
krb5_set_default_in_tkt_etypes krb5_set_default_tgs_enctypes
krb5_set_default_tgs_ktypes krb5_principal2salt krb5_use_enctype
krb5_string_to_key krb5_get_pw_salt krb5_string_to_key_salt krb5_auth_con_setkey
krb5_auth_con_setuseruserkey krb5_get_permitted_enctypes
krb5_get_default_in_tkt_etypes krb5_free_data_contents
krb5_principal_get_comp_string krb5_free_unparsed_name
krb5_free_keytab_entry_contents krb5_kt_free_entry krb5_krbhst_init
krb5_krbhst_get_addrinfo
krb5_crypto_init krb5_crypto_destroy
krb5_c_verify_checksum krb5_principal_compare_any_realm
krb5_parse_name_norealm krb5_princ_size krb5_get_init_creds_opt_set_pac_request
krb5_get_renewed_creds krb5_free_error_contents
initialize_krb5_error_table krb5_get_init_creds_opt_alloc
krb5_get_init_creds_opt_free krb5_get_init_creds_opt_get_error
krb5_enctype_to_string krb5_fwd_tgt_creds krb5_auth_con_set_req_cksumtype
krb5_get_creds_opt_alloc krb5_get_creds_opt_set_impersonate krb5_get_creds
krb5_get_credentials_for_user krb5_get_host_realm krb5_free_host_realm''',
                         lib='krb5 k5crypto')
        conf.CHECK_DECLS('''krb5_get_credentials_for_user
                            krb5_auth_con_set_req_cksumtype''',
                            headers='krb5.h', always=True)
        conf.CHECK_VARIABLE('AP_OPTS_USE_SUBKEY', headers='krb5.h')
        conf.CHECK_VARIABLE('KV5M_KEYTAB', headers='krb5.h')
        conf.CHECK_VARIABLE('KRB5_KU_OTHER_CKSUM', headers='krb5.h')
        conf.CHECK_VARIABLE('KRB5_KEYUSAGE_APP_DATA_CKSUM', headers='krb5.h')
        conf.CHECK_VARIABLE('ENCTYPE_AES128_CTS_HMAC_SHA1_96', headers='krb5.h')
        conf.CHECK_VARIABLE('ENCTYPE_AES256_CTS_HMAC_SHA1_96', headers='krb5.h')
        conf.CHECK_DECLS('KRB5_PDU_NONE', reverse=True, headers='krb5.h')
        conf.CHECK_STRUCTURE_MEMBER('krb5_keytab_entry', 'key', headers='krb5.h',
                                    define='HAVE_KRB5_KEYTAB_ENTRY_KEY')
        conf.CHECK_STRUCTURE_MEMBER('krb5_keytab_entry', 'keyblock', headers='krb5.h',
                                    define='HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK')
        conf.CHECK_STRUCTURE_MEMBER('krb5_address', 'magic', headers='krb5.h',
                                    define='HAVE_MAGIC_IN_KRB5_ADDRESS')
        conf.CHECK_STRUCTURE_MEMBER('krb5_address', 'addrtype', headers='krb5.h',
                                    define='HAVE_ADDRTYPE_IN_KRB5_ADDRESS')
        conf.CHECK_STRUCTURE_MEMBER('krb5_ap_req', 'ticket', headers='krb5.h',
                                    define='HAVE_TICKET_POINTER_IN_KRB5_AP_REQ')

        conf.CHECK_TYPE('krb5_encrypt_block', headers='krb5.h')

        conf.CHECK_CODE('''
krb5_context ctx;
krb5_get_init_creds_opt *opt = NULL;
krb5_get_init_creds_opt_free(ctx, opt);
''',
                        'KRB5_CREDS_OPT_FREE_REQUIRES_CONTEXT',
                        headers='krb5.h', link=False,
                        msg="Checking whether krb5_get_init_creds_opt_free takes a context argument")
        conf.CHECK_CODE('''
const krb5_data *pkdata;
krb5_context context;
krb5_principal principal;
pkdata = krb5_princ_component(context, principal, 0);
''',
                        'HAVE_KRB5_PRINC_COMPONENT',
                        headers='krb5.h', lib='krb5',
                        msg="Checking whether krb5_princ_component is available")

        conf.CHECK_CODE('''
int main(void) {
char buf[256];
krb5_enctype_to_string(1, buf, 256);
return 0;
}''',
                        'HAVE_KRB5_ENCTYPE_TO_STRING_WITH_SIZE_T_ARG',
                        headers='krb5.h', lib='krb5 k5crypto',
                        addmain=False, cflags='-Werror',
                        msg="Checking whether krb5_enctype_to_string takes size_t argument")

        conf.CHECK_CODE('''
int main(void) {
krb5_context context = NULL;
char *str = NULL;
krb5_enctype_to_string(context, 1, &str);
if (str) free (str);
return 0;
}''',
                        'HAVE_KRB5_ENCTYPE_TO_STRING_WITH_KRB5_CONTEXT_ARG',
                        headers='krb5.h stdlib.h', lib='krb5',
                        addmain=False, cflags='-Werror',
                        msg="Checking whether krb5_enctype_to_string takes krb5_context argument")
        conf.CHECK_CODE('''
int main(void) {
krb5_context ctx = NULL;
krb5_principal princ = NULL;
const char *str = krb5_princ_realm(ctx, princ)->data;
return 0;
}''',
                        'HAVE_KRB5_PRINC_REALM',
                        headers='krb5.h', lib='krb5',
                        addmain=False,
                        msg="Checking whether the macro krb5_princ_realm is defined")
        conf.CHECK_CODE('''
int main(void) {
    krb5_context context;
    krb5_principal principal;
    const char *realm; realm = krb5_principal_get_realm(context, principal);
    return 0;
}''',
                        'HAVE_KRB5_PRINCIPAL_GET_REALM',
                        headers='krb5.h', lib='krb5',
                        addmain=False,
                        msg="Checking whether krb5_principal_get_realm is defined")
        conf.CHECK_CODE('''
krb5_enctype enctype;
enctype = ENCTYPE_ARCFOUR_HMAC_MD5;
''',
            '_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5',
            headers='krb5.h', lib='krb5',
            msg="Checking whether the ENCTYPE_ARCFOUR_HMAC_MD5 key type definition is available");
        conf.CHECK_CODE('''
krb5_keytype keytype;
keytype = KEYTYPE_ARCFOUR_56;
''',
            '_HAVE_KEYTYPE_ARCFOUR_56',
            headers='krb5.h', lib='krb5',
            msg="Checking whether the HAVE_KEYTYPE_ARCFOUR_56 key type definition is available");
        if conf.CONFIG_SET('_HAVE_ENCTYPE_ARCFOUR_HMAC_MD5') and conf.CONFIG_SET('_HAVE_KEYTYPE_ARCFOUR_56'):
            conf.DEFINE('HAVE_ENCTYPE_ARCFOUR_HMAC_MD5', '1')

        conf.CHECK_CODE('''
krb5_enctype enctype;
enctype = ENCTYPE_ARCFOUR_HMAC;
''',
            'HAVE_ENCTYPE_ARCFOUR_HMAC',
            headers='krb5.h', lib='krb5',
            msg="Checking whether the ENCTYPE_ARCFOUR_HMAC key type definition is available");

        conf.CHECK_CODE('''
krb5_context context;
krb5_keytab keytab;
krb5_init_context(&context);
return krb5_kt_resolve(context, "WRFILE:api", &keytab);
''',
            'HAVE_WRFILE_KEYTAB',
            headers='krb5.h', lib='krb5', execute=True,
            msg="Checking whether the WRFILE:-keytab is supported");

        # Check for KRB5_DEPRECATED handling
        conf.CHECK_CODE('''#define KRB5_DEPRECATED 1
#include <krb5.h>''',
        'HAVE_KRB5_DEPRECATED_WITH_IDENTIFIER', addmain=False,
        link=False,
        msg="Checking for KRB5_DEPRECATED define taking an identifier")

    if Options.options.with_ads:
        use_ads=True
        if not conf.CONFIG_SET('HAVE_ENCTYPE_ARCFOUR_HMAC_MD5') and \
           not conf.CONFIG_SET('HAVE_ENCTYPE_ARCFOUR_HMAC'):
            Logs.warn("arcfour-hmac-md5 encryption type not found in -lkrb5")
            use_ads=False
        if not conf.CONFIG_SET('HAVE_KRB5_MK_REQ_EXTENDED'):
            Logs.warn("krb5_mk_req_extended not found in -lkrb5")
            use_ads=False
        if not conf.CONFIG_SET('HAVE_KRB5_GET_HOST_REALM'):
            Logs.warn("krb5_get_host_realm not found in -lkrb5")
            use_ads=False
        if not conf.CONFIG_SET('HAVE_KRB5_FREE_HOST_REALM'):
            Logs.warn("krb5_free_host_realm not found in -lkrb5")
            use_ads=False
        if not conf.CONFIG_SET('HAVE_KRB5_FWD_TGT_CREDS'):
            Logs.warn("krb5_fwd_tgt_creds found in -lkrb5")
            use_ads=False
        if not conf.CONFIG_SET('HAVE_KRB5_GET_INIT_CREDS_OPT_ALLOC'):
            Logs.warn("krb5_get_init_creds_opt_alloc not found in -lkrb5")
            use_ads=False
        if not conf.CONFIG_SET('KRB5_CREDS_OPT_FREE_REQUIRES_CONTEXT'):
            Logs.warn("krb5_get_init_creds_opt_free was not found or was too old in -lkrb5")
            use_ads=False
        if not conf.CONFIG_SET('HAVE_KRB5_GET_RENEWED_CREDS'):
            Logs.warn("krb5_get_renewed_creds not found in -lkrb5")
            use_ads=False
        if not conf.CONFIG_SET('HAVE_KRB5_PRINCIPAL_COMPARE_ANY_REALM'):
            Logs.warn("krb5_principal_compare_any_realm not found in -lkrb5")
            use_ads=False
        if not conf.CONFIG_SET('HAVE_KRB5_STRING_TO_KEY'):
            Logs.warn("krb5_string_to_key not found in -lkrb5")
            use_ads=False
        if not conf.CONFIG_SET('HAVE_KRB5_PRINCIPAL2SALT') and \
           not conf.CONFIG_SET('HAVE_KRB5_GET_PW_SALT'):
            Logs.warn("no CREATE_KEY_FUNCTIONS detected")
            use_ads=False
        if not conf.CONFIG_SET('HAVE_KRB5_GET_PERMITTED_ENCTYPES') and \
           not conf.CONFIG_SET('HAVE_KRB5_GET_DEFAULT_IN_TKT_ETYPES'):
            Logs.warn("no GET_ENCTYPES_FUNCTIONS detected")
            use_ads=False
        if not conf.CONFIG_SET('HAVE_KRB5_KT_FREE_ENTRY') and \
           not conf.CONFIG_SET('HAVE_KRB5_FREE_KEYTAB_ENTRY_CONTENTS'):
            Logs.warn("no KT_FREE_FUNCTION detected")
            use_ads=False
        if not conf.CONFIG_SET('HAVE_KRB5_C_VERIFY_CHECKSUM'):
            Logs.warn("krb5_c_verify_checksum_compare not found in -lkrb5")
            use_ads=False

        # We don't actually use
        # gsskrb5_extract_authz_data_from_sec_context, but it is a
        # clue that this Heimdal, which does the PAC processing we
        # need on the standard gss_inquire_sec_context_by_oid
        if not conf.CONFIG_SET('HAVE_GSS_GET_NAME_ATTRIBUTE') and \
            not (conf.CONFIG_SET('HAVE_GSSKRB5_EXTRACT_AUTHZ_DATA_FROM_SEC_CONTEXT') and \
                     conf.CONFIG_SET('HAVE_GSS_INQUIRE_SEC_CONTEXT_BY_OID')):
            Logs.warn("need eiterh gss_get_name_attribute or gsskrb5_extract_authz_data_from_sec_context and gss_inquire_sec_context_by_oid in -lgssapi for PAC support")
            use_ads=False

        if not conf.CONFIG_SET('HAVE_GSS_KRB5_EXPORT_LUCID_SEC_CONTEXT'):
            Logs.warn("need gss_krb5_export_lucid_sec_context for SPNEGO and gss_wrap support")
            use_ads=False

        if use_ads:
            conf.DEFINE('WITH_ADS', '1')
            conf.DEFINE('HAVE_KRB5', '1')
            if conf.CONFIG_SET('HAVE_LDAP'):
                conf.env['HAVE_ADS'] = '1'
        else:
            Logs.warn("krb5 libs don't have all features required for Active Directory support")
            conf.undefine('HAVE_KRB5_H')
            conf.undefine('HAVE_GSSAPI_H')
            conf.undefine('HAVE_GSSAPI_GSSAPI_GENERIC_H')
            conf.undefine('HAVE_GSSAPI_GSSAPI_H')

    if Options.options.with_utmp:
        conf.env.with_utmp = True
        if not conf.CHECK_HEADERS('utmp.h'): conf.env.with_utmp = False
        conf.CHECK_FUNCS('pututline pututxline updwtmp updwtmpx getutmpx getutxent')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_name', headers='utmp.h',
                                    define='HAVE_UT_UT_NAME')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_user', headers='utmp.h',
                                    define='HAVE_UT_UT_USER')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_id', headers='utmp.h',
                                    define='HAVE_UT_UT_ID')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_host', headers='utmp.h',
                                    define='HAVE_UT_UT_HOST')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_time', headers='utmp.h',
                                    define='HAVE_UT_UT_TIME')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_tv', headers='utmp.h',
                                    define='HAVE_UT_UT_TV')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_type', headers='utmp.h',
                                    define='HAVE_UT_UT_TYPE')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_pid', headers='utmp.h',
                                    define='HAVE_UT_UT_PID')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_exit.e_exit', headers='utmp.h',
                                    define='HAVE_UT_UT_EXIT')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_addr_v6', headers='utmp.h',
                                    define='HAVE_UT_UT_ADDR_V6')
        conf.CHECK_STRUCTURE_MEMBER('struct utmp', 'ut_addr', headers='utmp.h',
                                    define='HAVE_UT_UT_ADDR')
        conf.CHECK_STRUCTURE_MEMBER('struct utmpx', 'ut_syslen', headers='utmpx.h',
                                    define='HAVE_UX_UT_SYSLEN')
        conf.CHECK_CODE('struct utmp utarg; struct utmp *utreturn; utreturn = pututline(&utarg);',
                        'PUTUTLINE_RETURNS_UTMP', headers='utmp.h',
                        msg="Checking whether pututline returns pointer")
        if conf.env.with_utmp:
            conf.DEFINE('WITH_UTMP', 1)

    if Options.options.with_avahi:
        conf.env.with_avahi = True
        if not conf.CHECK_HEADERS('avahi-common/watch.h avahi-client/client.h'): conf.env.with_avahi = False
        if not conf.CHECK_FUNCS_IN('avahi_client_new', 'avahi-client'): conf.env.with_avahi = False
        if not conf.CHECK_FUNCS_IN('avahi_strerror', 'avahi-common'): conf.env.with_avahi = False
        if conf.env.with_avahi:
            conf.DEFINE('WITH_AVAHI_SUPPORT', 1)
    else:
        conf.SET_TARGET_TYPE('avahi-common', 'EMPTY')
        conf.SET_TARGET_TYPE('avahi-client', 'EMPTY')

    if Options.options.with_iconv:
        conf.env.with_iconv = True
        if not conf.CHECK_FUNCS_IN('iconv_open', 'iconv', headers='iconv.h'):
            conf.env.with_iconv = False
        if conf.env.with_iconv:
            conf.DEFINE('HAVE_ICONV', 1)

    if Options.options.with_pam:
        use_pam=True
        conf.CHECK_HEADERS('security/pam_appl.h pam/pam_appl.h')
        if not conf.CONFIG_SET('HAVE_SECURITY_PAM_APPL_H') and not conf.CONFIG_SET('HAVE_PAM_PAM_APPL_H'):
            Logs.warn("--with-pam=yes but pam_appl.h not found")
            use_pam=False
        conf.CHECK_FUNCS_IN('pam_get_data', 'pam')
        conf.CHECK_HEADERS('security/pam_modules.h pam/pam_modules.h')
        if not conf.CONFIG_SET('HAVE_SECURITY_PAM_MODULES_H') and not conf.CONFIG_SET('HAVE_PAM_PAM_MODULES_H'):
            Logs.warn("--with-pam=yes but pam_modules.h not found")
            use_pam=False
        conf.CHECK_HEADERS('security/pam_ext.h security/_pam_macros.h')
        conf.CHECK_HEADERS('pam/pam_ext.h pam/_pam_macros.h')
        conf.CHECK_FUNCS_IN('pam_vsyslog', 'pam')
        conf.CHECK_CODE('''
#if defined(HAVE_SECURITY_PAM_APPL_H)
#include <security/pam_appl.h>
#elif defined(HAVE_PAM_PAM_APPL_H)
#include <pam/pam_appl.h>
#endif
pam_set_item(0, PAM_RHOST, 0);
''',
            'HAVE_PAM_RHOST',
            lib='pam',
            msg="Checking whether PAM_RHOST is available");
        conf.CHECK_CODE('''
#if defined(HAVE_SECURITY_PAM_APPL_H)
#include <security/pam_appl.h>
#elif defined(HAVE_PAM_PAM_APPL_H)
#include <pam/pam_appl.h>
#endif
pam_set_item(0, PAM_TTY, 0);
''',
            'HAVE_PAM_TTY',
            lib='pam',
            msg="Checking whether PAM_TTY is available");
        conf.CHECK_CODE('''
#if (!defined(LINUX))

#define PAM_EXTERN extern
#if defined(HAVE_SECURITY_PAM_APPL_H)
#include <security/pam_appl.h>
#elif defined(HAVE_PAM_PAM_APPL_H)
#include <pam/pam_appl.h>
#endif

#endif

#if defined(HAVE_SECURITY_PAM_MODULES_H)
#include <security/pam_modules.h>
#elif defined(HAVE_PAM_PAM_MODULES_H)
#include <pam/pam_modules.h>
#endif

#if defined(HAVE_SECURITY__PAM_MACROS_H)
#include <security/_pam_macros.h>
#elif defined(HAVE_PAM__PAM_MACROS_H)
#include <pam/_pam_macros.h>
#endif

#ifdef HAVE_SECURITY_PAM_EXT_H
#include <security/pam_ext.h>
#endif

int i; i = PAM_RADIO_TYPE;
''',
            'HAVE_PAM_RADIO_TYPE',
            lib='pam',
            msg="Checking whether PAM_RADIO_TYPE is available");
        if use_pam:
            conf.DEFINE('WITH_PAM', 1)
            conf.DEFINE('WITH_PAM_MODULES', 1)

    seteuid = False
    if not seteuid:
        seteuid = conf.CHECK_CODE('''
                                #define AUTOCONF_TEST 1
                                #define USE_SETREUID 1
                                #include "./lib/util_sec.c"
                                ''',
                                'USE_SETREUID',
                                addmain=False,
                                execute=True,
                                msg="Checking whether setreuid is available")
    if not seteuid:
        seteuid = conf.CHECK_CODE('''
                                #define AUTOCONF_TEST 1
                                #define USE_SETRESUID 1
                                #include "./lib/util_sec.c"
                                ''',
                                'USE_SETRESUID',
                                addmain=False,
                                execute=True,
                                msg="Checking whether setresuid is available")
    if not seteuid:
        seteuid = conf.CHECK_CODE('''
                                #define AUTOCONF_TEST 1
                                #define USE_SETEUID 1
                                #include "./lib/util_sec.c"
                                ''',
                                'USE_SETEUID',
                                addmain=False,
                                execute=True,
                                msg="Checking whether seteuid is available")
    if not seteuid:
        seteuid = conf.CHECK_CODE('''
                                #define AUTOCONF_TEST 1
                                #define USE_SETUIDX 1
                                #include "./lib/util_sec.c"
                                ''',
                                'USE_SETUIDX',
                                addmain=False,
                                execute=True,
                                mandatory=True,
                                msg="Checking whether setuidx is available")
    if Options.options.with_dnsupdate:
        conf.CHECK_HEADERS('uuid/uuid.h')
        conf.CHECK_FUNCS_IN('uuid_generate', 'uuid')
        if not conf.CONFIG_SET('HAVE_UUID_UUID_H') and not conf.CONFIG_SET('HAVE_UUID_GENERATE'):
            Logs.warn("--with-dnsupdate=yes but uuid support not sufficient")
        elif not conf.CONFIG_SET('HAVE_KRB5'):
            Logs.warn("--with-dnsupdate=yes but gssapi support not sufficient")
        else:
            conf.DEFINE('WITH_DNS_UPDATES', 1)
    else:
        conf.SET_TARGET_TYPE('uuid', 'EMPTY')
    conf.CHECK_HEADERS('valgrind.h valgrind/valgrind.h valgrind/memcheck.h')
    if Options.options.developer:
        if conf.CONFIG_SET('HAVE_VALGRIND_H') or conf.CONFIG_SET('HAVE_VALGRIND_VALGRIND_H'):
            conf.DEFINE('VALGRIND', '1')

    if conf.CHECK_CODE('''
#include <bits/sockaddr.h>
#include <linux/netlink.h>
''',
                'HAVE_LINUX_NETLINK_H',
                msg="Checking whether Linux netlink is available"):
        conf.CHECK_CODE('''
#include <bits/sockaddr.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
''',
                'HAVE_LINUX_RTNETLINK_H',
                msg='Checking whether Linux rtnetlink is available')
    conf.CHECK_CODE('''
#include "../tests/fcntl_lock.c"
''',
                'HAVE_FCNTL_LOCK',
                addmain=False,
                execute=True,
                msg='Checking whether fcntl locking is available')

    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_mtim.tv_nsec',
                                define='HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC') # Linux, Solaris
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_mtimensec',
                                define='HAVE_STRUCT_STAT_ST_MTIMENSEC') # BSD, if defined _POSIX_SOURCE
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_mtimespec.tv_nsec',
                                define='HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC') # BSD, if not defined _POSIX_SOURCE
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_mtime_n',
                                define='HAVE_STRUCT_STAT_ST_MTIME_N') # AIX
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_umtime',
                                define='HAVE_STRUCT_STAT_ST_UMTIME') # Tru64
    if conf.CONFIG_SET('HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC') or \
       conf.CONFIG_SET('HAVE_STRUCT_STAT_ST_MTIMENSEC') or \
       conf.CONFIG_SET('HAVE_STRUCT_STAT_ST_MTIMESPEC_TV_NSEC') or \
       conf.CONFIG_SET('HAVE_STRUCT_STAT_ST_MTIME_N') or \
       conf.CONFIG_SET('HAVE_STRUCT_STAT_ST_UMTIME'):
        conf.DEFINE('HAVE_STAT_HIRES_TIMESTAMPS', '1')

    # recent FreeBSD, NetBSD have creation timestamps called birthtime:
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_birthtime',
                                define='HAVE_STRUCT_STAT_ST_BIRTHTIME')
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_birthtimespec.tv_nsec',
                                define='HAVE_STRUCT_STAT_ST_BIRTHTIMESPEC_TV_NSEC')
    conf.CHECK_STRUCTURE_MEMBER('struct stat', 'st_birthtimensec',
                                define='HAVE_STRUCT_STAT_ST_BIRTHTIMENSEC')

    conf.CHECK_CODE('''
ssize_t err = posix_fadvise(0,0,0x80000,POSIX_FADV_WILLNEED);
''',
                'HAVE_POSIX_FADVISE',
                msg='Checking whether posix_fadvise is available',
                headers='unistd.h fcntl.h')

    for v in ['_SC_NGROUPS_MAX', '_SC_NPROC_ONLN', '_SC_NPROCESSORS_ONLN', '_SC_PAGESIZE' ]:
        conf.CHECK_CODE('''
                        #include <unistd.h>
                        return sysconf(%s) == -1 ? 1 : 0;
                        ''' % v,
                        'SYSCONF%s' % v,
                        msg='Checking whether sysconf(%s) is available' % v)

    conf.CHECK_DECLS('__NR_inotify_init', reverse=True, headers='asm/unistd.h')

    conf.CHECK_CODE('''
#include <sys/syscall.h>
#include <unistd.h>
syscall(SYS_initgroups, 16, NULL, NULL, 0);
                    ''',
                    'HAVE_DARWIN_INITGROUPS',
                    msg='Checking whether to use the Darwin-specific initgroups system call')

    conf.CHECK_CODE('''struct utimbuf tbuf;  tbuf.actime = 0; tbuf.modtime = 1; exit(utime("foo.c",&tbuf));''',
                    'HAVE_UTIMBUF',
                    headers='sys/types.h utime.h',
                    msg='Checking whether struct utimbuf is available')

    if conf.CHECK_CODE('''struct sigevent s;''',
                    'HAVE_STRUCT_SIGEVENT',
                    headers='sys/types.h stdlib.h stddef.h signal.h',
                    msg='Checking whether we have the struct sigevent'):
        conf.CHECK_STRUCTURE_MEMBER('struct sigevent', 'sigev_value.sival_ptr',
                                    define='HAVE_STRUCT_SIGEVENT_SIGEV_VALUE_SIVAL_PTR',
                                    headers='signal.h');
        conf.CHECK_STRUCTURE_MEMBER('struct sigevent', 'sigev_value.sigval_ptr',
                                    define='HAVE_STRUCT_SIGEVENT_SIGEV_VALUE_SIGVAL_PTR',
                                    headers='signal.h');

    if os.path.exists('/proc/sys/kernel/core_pattern'):
        conf.DEFINE('HAVE_SYS_KERNEL_PROC_CORE_PATTERN', '1')

    if conf.CHECK_CODE('''
#include <time.h>
main() {
        struct tm *tm;
        if (sizeof(time_t) == 8) {
                time_t max_time = 0x7fffffffffffffffll;
                tm = gmtime(&max_time);
                /* This should fail with 32-bit tm_year. */
                if (tm == NULL) {
                        /* Max time_t that works with 32-bit int tm_year in struct tm. */
                        max_time = 67768036191676799ll;
                        tm = gmtime(&max_time);
                        if (tm) {
                                exit(0);
                        }
                }
        }
        exit(1);
}''',
        '__TIME_T_MAX',
        addmain=False,
        execute=True,
        msg="Checking for the maximum value of the 'time_t' type"):
            conf.DEFINE('TIME_T_MAX', '67768036191676799ll')

    conf.CHECK_CODE('''
#if defined(HAVE_UNISTD_H)
#include <unistd.h>
#endif
#include <sys/types.h>
main() { dev_t dev = makedev(1,2); return 0; }
''',
        'HAVE_MAKEDEV',
        addmain=False,
        msg='Checking whether the macro for makedev is available')

    conf.CHECK_CODE('''
#include <stdio.h>
#include <limits.h>
#include <signal.h>

void exit_on_core(int ignored) {
        exit(1);
}

main() {
        char *newpath;
        signal(SIGSEGV, exit_on_core);
        newpath = realpath("/tmp", NULL);
        exit((newpath != NULL) ? 0 : 1);
}
''',
        'REALPATH_TAKES_NULL',
        addmain=False,
        execute=True,
        msg='Checking whether the realpath function allows a NULL argument')

    conf.CHECK_CODE('''#include "../tests/ftruncate.c"''',
                    'HAVE_FTRUNCATE_EXTEND',
                    msg='Checking for ftruncate extend',
                    addmain=False,
                    execute=True)
    if os.getenv('RUN_FROM_BUILD_FARM'):
        Logs.info("enabling buildfarm hacks")
        conf.DEFINE('ENABLE_BUILD_FARM_HACKS', '1')

    if Options.options.with_sendfile_support:
        if (host_os.rfind('linux') > -1) or (host_os.rfind('gnu') > -1) or (host_os.rfind('k*bsd*-gnu') > -1) or (host_os.rfind('kopensolaris*-gnu') > -1):
            conf.CHECK_CODE('''
                            int tofd, fromfd;
                            off_t offset;
                            size_t total;
                            ssize_t nwritten = sendfile(tofd, fromfd, &offset, total);
                            ''',
                            '_HAVE_SENDFILE',
                            headers='sys/sendfile',
                            msg='Checking for linux sendfile support')

            # Try and cope with broken Linux sendfile....
            conf.CHECK_CODE('''#if defined(_FILE_OFFSET_BITS) && (_FILE_OFFSET_BITS == 64)
                            #undef _FILE_OFFSET_BITS
                            #endif
                            #include <sys/sendfile.h>
                            int tofd, fromfd;
                            off_t offset;
                            size_t total;
                            ssize_t nwritten = sendfile(tofd, fromfd, &offset, total);
                            ''',
                            '_HAVE_BROKEN_LINUX_SENDFILE',
                            msg='Checking for broken linux sendfile support')
            if conf.CONFIG_SET('_HAVE_SENDFILE'):
                conf.DEFINE('HAVE_SENDFILE', '1')
                conf.DEFINE('LINUX_SENDFILE_API', '1')
                conf.DEFINE('WITH_SENDFILE', '1')
            elif conf.CONFIG_SET('_HAVE_BROKEN_LINUX_SENDFILE'):
                conf.DEFINE('LINUX_BROKEN_SENDFILE_API', '1')
                conf.DEFINE('WITH_SENDFILE', '1')
        elif (host_os.rfind('freebsd') > -1) or (host_os.rfind('dragonfly') > -1):
            conf.CHECK_CODE('''
                            #include <sys/types.h>
                            #include <unistd.h>
                            #include <sys/socket.h>
                            #include <sys/uio.h>
                            int fromfd, tofd, ret, total=0;
                            off_t offset, nwritten;
                            struct sf_hdtr hdr;
                            struct iovec hdtrl;
                            hdr.headers = &hdtrl;
                            hdr.hdr_cnt = 1;
                            hdr.trailers = NULL;
                            hdr.trl_cnt = 0;
                            hdtrl.iov_base = NULL;
                            hdtrl.iov_len = 0;
                            ret = sendfile(fromfd, tofd, offset, total, &hdr, &nwritten, 0)
                            ''',
                            '_HAVE_SENDFILE',
                            msg='Checking for freebsd sendfile support')
            if conf.CONFIG_SET('_HAVE_SENDFILE'):
                conf.DEFINE('HAVE_SENDFILE', '1')
                conf.DEFINE('FREEBSD_SENDFILE_API', '1')
                conf.DEFINE('WITH_SENDFILE', '1')
        elif (host_os.rfind('hpux') > -1):
            conf.CHECK_CODE('''
                            #include <sys/socket.h>
                            #include <sys/uio.h>
                            int fromfd, tofd;
                            size_t total=0;
                            struct iovec hdtrl[2];
                            ssize_t nwritten;
                            off_t offset;
                            hdtrl[0].iov_base = 0;
                            hdtrl[0].iov_len = 0;
                            nwritten = sendfile(tofd, fromfd, offset, total, &hdtrl[0], 0);
                            ''',
                            '_HAVE_SENDFILE',
                            msg='Checking for hpux sendfile support')
            if conf.CONFIG_SET('_HAVE_SENDFILE'):
                conf.DEFINE('HAVE_SENDFILE', '1')
                conf.DEFINE('HPUX_SENDFILE_API', '1')
                conf.DEFINE('WITH_SENDFILE', '1')
        elif (host_os.rfind('solaris') > -1):
            conf.CHECK_FUNCS_IN('sendfile', 'sendfilev')
            conf.CHECK_CODE('''
                            #include <sys/sendfile.h>,
                            int sfvcnt;
                            size_t xferred;
                            struct sendfilevec vec[2];
                            ssize_t nwritten;
                            int tofd;
                            sfvcnt = 2;
                            vec[0].sfv_fd = SFV_FD_SELF;
                            vec[0].sfv_flag = 0;
                            vec[0].sfv_off = 0;
                            vec[0].sfv_len = 0;
                            vec[1].sfv_fd = 0;
                            vec[1].sfv_flag = 0;
                            vec[1].sfv_off = 0;
                            vec[1].sfv_len = 0;
                            nwritten = sendfilev(tofd, vec, sfvcnt, &xferred);
                            ''',
                            '_HAVE_SENDFILEV',
                            msg='Checking for solaris sendfilev support')
            if conf.CONFIG_SET('_HAVE_SENDFILEV'):
                conf.DEFINE('HAVE_SENDFILEV', '1')
                conf.DEFINE('SOLARIS_SENDFILE_API', '1')
                conf.DEFINE('WITH_SENDFILE', '1')
        elif (host_os.rfind('aix') > -1):
            conf.CHECK_CODE('''
                            #include <sys/socket.h>
                            int fromfd, tofd;
                            size_t total=0;
                            struct sf_parms hdtrl;
                            ssize_t nwritten;
                            hdtrl.header_data = 0;
                            hdtrl.header_length = 0;
                            hdtrl.file_descriptor = fromfd;
                            hdtrl.file_offset = 0;
                            hdtrl.file_bytes = 0;
                            hdtrl.trailer_data = 0;
                            hdtrl.trailer_length = 0;
                            nwritten = send_file(&tofd, &hdtrl, 0);
                            ''',
                            '_HAVE_SENDFILE',
                            msg='Checking for AIX send_file support')
            if conf.CONFIG_SET('_HAVE_SENDFILE'):
                conf.DEFINE('HAVE_SENDFILE', '1')
                conf.DEFINE('AIX_SENDFILE_API', '1')
                conf.DEFINE('WITH_SENDFILE', '1')

    # Check for getcwd allowing a NULL arg.
    conf.CHECK_CODE('''
#include <unistd.h>
main() {
        char *s = getcwd(NULL,0);
        exit(s != NULL ?  0 : 1);
}''', 'GETCWD_TAKES_NULL', addmain=False, execute=True,
        msg="getcwd takes a NULL argument")


    # UnixWare 7.x has its getspnam in -lgen
    conf.CHECK_FUNCS_IN('getspnam', 'gen')
    conf.CHECK_FUNCS_IN('getspnam', 'security')
    conf.CHECK_FUNCS_IN('getspnam', 'sec')

    if Options.options.with_quotas:
        # For quotas on Veritas VxFS filesystems
        conf.CHECK_HEADERS('sys/fs/vx_quota.h')
        # For quotas on Linux XFS filesystems
        conf.CHECK_HEADERS('linux/dqblk_xfs.h')
        # For sys/quota.h and linux/quota.h
        conf.CHECK_HEADERS('sys/quota.h')


    #
    # checking for clustering extensions (CTDB)
    #
    if not Options.options.with_cluster_support:
        have_cluster_support = False

    else:

        if Options.options.ctdb_dir:
            conf.ADD_EXTRA_INCLUDES(Options.options.ctdb_dir + '/include')

        srcdir = os.path.realpath(conf.srcdir)
        if 'EXTRA_INCLUDES' in conf.env:
            includes = ' '.join(conf.env['EXTRA_INCLUDES']).replace('#', srcdir + '/')
        else:
            includes = ''

        have_cluster_support = True
        ctdb_broken = ""

        conf.CHECK_CODE('''
            #define NO_CONFIG_H
            #include "replace.h"
            #include "system/wait.h"
            #include "system/network.h"
            #define private #error __USED_RESERVED_WORD_private__
            #include <talloc.h>
            #include <tdb.h>
            #include <ctdb.h>

            int main(void)
            {
                return 0;
            }
            ''',
            'HAVE_CTDB_H',
            addmain=False,
            includes=includes,
            msg='Checking for header ctdb.h')

        if not conf.CONFIG_SET('HAVE_CTDB_H'):
            have_cluster_support = False
            ctdb_broken = "ctdb.h is required for cluster support"

        if have_cluster_support:
            conf.CHECK_CODE('''
                #define NO_CONFIG_H
                #include "replace.h"
                #include "system/wait.h"
                #include "system/network.h"
                #define private #error __USED_RESERVED_WORD_private__
                #include <talloc.h>
                #include <tdb.h>
                #include <ctdb.h>
                #include <ctdb_private.h>

                int main(void)
                {
                    return 0;
                }
                ''',
                'HAVE_CTDB_PRIVATE_H',
                addmain=False,
                includes=includes,
                msg='Checking for header ctdb_private.h')

            if not conf.CONFIG_SET('HAVE_CTDB_PRIVATE_H'):
                have_cluster_support = False
                ctdb_broken = "ctdb_private.h is required for cluster support"

        if have_cluster_support:
            conf.CHECK_CODE('''
                #define NO_CONFIG_H
                #include "replace.h"
                #include "system/wait.h"
                #include "system/network.h"
                #include <talloc.h>
                #include <tdb.h>
                #include <ctdb.h>
                #include <ctdb_private.h>

                int main(void)
                {
                   int i = (int)CTDB_CONTROL_TRANS3_COMMIT;
                   return 0;
                }
                ''',
                'HAVE_CTDB_CONTROL_TRANS3_COMMIT_DECL',
                addmain=False,
                includes=includes,
                msg='Checking for transaction support (TRANS3_COMMIT control)')

            if not conf.CONFIG_SET('HAVE_CTDB_CONTROL_TRANS3_COMMIT_DECL'):
                have_cluster_support = False
                ctdb_broken = "ctdb transaction support missing or too old"

        if have_cluster_support:
            conf.CHECK_CODE('''
                #define NO_CONFIG_H
                #include "replace.h"
                #include "system/wait.h"
                #include "system/network.h"
                #include <talloc.h>
                #include <tdb.h>
                #include <ctdb.h>
                #include <ctdb_private.h>

                int main(void)
                {
                    int i = (int)CTDB_CONTROL_SCHEDULE_FOR_DELETION;
                    return 0;
                }
                ''',
                'HAVE_CTDB_CONTROL_SCHEDULE_FOR_DELETION_DECL',
                addmain=False,
                includes=includes,
                msg='Checking for SCHEDULE_FOR_DELETION control')

            if not conf.CONFIG_SET('HAVE_CTDB_CONTROL_SCHEDULE_FOR_DELETION_DECL'):
                if not Options.options.enable_old_ctdb:
                    have_cluster_support = False
                    ctdb_broken = "SCHEDULE_FOR_DELETION control missing"
                else:
                    Logs.warn("ignoring missing SCHEDULE_FOR_DELETION control (--enable-old-ctdb)")

        if have_cluster_support:
            conf.CHECK_CODE('''
                #define NO_CONFIG_H
                #include "replace.h"
                #include "system/wait.h"
                #include "system/network.h"
                #include <talloc.h>
                #include <tdb.h>
                #include <ctdb.h>
                #include <ctdb_private.h>

                int main(void)
                {
                    struct ctdb_control_tcp _x;
                    return 0;
                }
                ''',
                'HAVE_STRUCT_CTDB_CONTROL_TCP',
                addmain=False,
                includes=includes,
                msg='Checking for ctdb ipv4 support')

            if not conf.CONFIG_SET('HAVE_STRUCT_CTDB_CONTROL_TCP'):
                have_cluster_support = False
                ctdb_broken = "missing struct ctdb_control_tcp"

        if have_cluster_support:
            conf.CHECK_CODE('''
                #define NO_CONFIG_H
                #include "replace.h"
                #include "system/wait.h"
                #include "system/network.h"
                #include <talloc.h>
                #include <tdb.h>
                #include <ctdb.h>
                #include <ctdb_private.h>

                int main(void)
                {
                    struct ctdb_control_tcp_addr _x;
                    return 0;
                }
                ''',
                'HAVE_STRUCT_CTDB_CONTROL_TCP_ADDR',
                addmain=False,
                includes=includes,
                msg='Checking for ctdb ipv6 support')

        if have_cluster_support:
            conf.CHECK_CODE('''
                #define NO_CONFIG_H
                #include "replace.h"
                #include "system/wait.h"
                #include "system/network.h"
                #include <talloc.h>
                #include <tdb.h>
                #include <ctdb.h>
                #include <ctdb_private.h>

                int main(void)
                {
                    int i = (int)CTDB_CONTROL_CHECK_SRVIDS;
                    return 0;
                }
                ''',
                'HAVE_CTDB_CONTROL_CHECK_SRVIDS_DECL',
                addmain=False,
                includes=includes,
                msg='Checking for CHECK_SRVIDS control')

            if not conf.CONFIG_SET('HAVE_CTDB_CONTROL_CHECK_SRVIDS_DECL'):
                if not Options.options.enable_old_ctdb:
                    have_cluster_support = False
                    ctdb_broken = "CHECK_SRVIDS control missing"
                else:
                    Logs.warn("ignoring missing CHECK_SRVIDS control (--enable-old-ctdb)")

    if have_cluster_support:
        Logs.info("building with cluster support")
        conf.DEFINE('CLUSTER_SUPPORT', 1);
    else:
        if not Options.options.with_cluster_support:
            Logs.info("building without cluster support")
        else:
            Logs.warn("building without cluster support: " + ctdb_broken)
        conf.undefine('CLUSTER_SUPPORT')



    conf.CHECK_CODE('__attribute__((destructor)) static void cleanup(void) { }',
                    'HAVE_FUNCTION_ATTRIBUTE_DESTRUCTOR',
                    addmain=False,
                    link=False,
                    msg='Checking whether we can compile with __attribute__((destructor))')

    conf.CHECK_CODE('void seekdir(DIR *d, long loc) { return; }',
                    'SEEKDIR_RETURNS_VOID',
                    headers='sys/types.h dirent.h',
                    msg='Checking whether seekdir returns void')

    if Options.options.with_profiling_data:
        conf.DEFINE('WITH_PROFILE', 1);

    PTHREAD_CFLAGS='error'
    PTHREAD_LDFLAGS='error'

    if PTHREAD_LDFLAGS == 'error':
        if conf.CHECK_FUNCS_IN('pthread_attr_init', 'pthread'):
            PTHREAD_CFLAGS='-D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS'
            PTHREAD_LDFLAGS='-lpthread'
    if PTHREAD_LDFLAGS == 'error':
        if conf.CHECK_FUNCS_IN('pthread_attr_init', 'pthreads'):
            PTHREAD_CFLAGS='-D_THREAD_SAFE'
            PTHREAD_LDFLAGS='-lpthreads'
    if PTHREAD_LDFLAGS == 'error':
        if conf.CHECK_FUNCS_IN('pthread_attr_init', 'c_r'):
            PTHREAD_CFLAGS='-D_THREAD_SAFE -pthread'
            PTHREAD_LDFLAGS='-pthread'
    if PTHREAD_LDFLAGS == 'error':
        if conf.CHECK_FUNC('pthread_attr_init'):
            PTHREAD_CFLAGS='-D_REENTRANT'
            PTHREAD_LDFLAGS='-lpthread'
    # especially for HP-UX, where the CHECK_FUNC macro fails to test for
    # pthread_attr_init. On pthread_mutex_lock it works there...
    if PTHREAD_LDFLAGS == 'error':
        if conf.CHECK_FUNCS_IN('pthread_mutex_lock', 'pthread'):
            PTHREAD_CFLAGS='-D_REENTRANT'
            PTHREAD_LDFLAGS='-lpthread'

    if PTHREAD_CFLAGS != 'error' and PTHREAD_LDFLAGS != 'error':
        conf.ADD_CFLAGS(PTHREAD_CFLAGS)
        conf.ADD_LDFLAGS(PTHREAD_LDFLAGS)
        conf.CHECK_HEADERS('pthread.h')
        conf.DEFINE('HAVE_PTHREAD', '1')

    if Options.options.with_pthreadpool:
        if conf.CONFIG_SET('HAVE_PTHREAD'):
            conf.DEFINE('WITH_PTHREADPOOL', '1')
        else:
            Logs.warn("pthreadpool support cannot be enabled when pthread support was not found")
            conf.undefine('WITH_PTHREADPOOL')

    if conf.CHECK_HEADERS('gpfs_gpl.h'):
        conf.DEFINE('HAVE_GPFS', '1')

    # Note that all charset 'modules' must actually be static, due to dependency loop issues 
    # if we include the module loader in iconv

    default_static_modules=TO_LIST('''pdb_smbpasswd pdb_tdbsam pdb_wbc_sam
                                      auth_sam auth_unix auth_winbind auth_wbc auth_server
                                      auth_domain auth_builtin vfs_default
                                      nss_info_template idmap_tdb idmap_passdb
                                      idmap_nss''')

    default_shared_modules=TO_LIST('''vfs_recycle vfs_audit vfs_extd_audit vfs_full_audit vfs_netatalk
                                      vfs_fake_perms vfs_default_quota vfs_readonly vfs_cap
                                      vfs_expand_msdfs vfs_shadow_copy vfs_shadow_copy2 
                                      auth_script vfs_readahead vfs_xattr_tdb vfs_posix_eadb
                                      vfs_streams_xattr vfs_streams_depot vfs_acl_xattr vfs_acl_tdb
                                      vfs_smb_traffic_analyzer vfs_preopen vfs_catia vfs_scannedonly
                                      vfs_crossrename vfs_linux_xfs_sgid
                                      vfs_time_audit idmap_autorid''')

    if Options.options.developer:
        default_static_modules.extend(TO_LIST('pdb_ads auth_netlogond charset_weird'))
        default_shared_modules.extend(TO_LIST('perfcount_test'))
        default_shared_modules.extend(TO_LIST('vfs_skel_opaque vfs_skel_transparent vfs_shadow_copy_test'))
        default_shared_modules.extend(TO_LIST('auth_skel pdb_test'))

    default_static_modules.extend(TO_LIST('pdb_samba4 auth_samba4 vfs_dfs_samba4'))

    if Options.options.with_acl_support and conf.CONFIG_SET('HAVE_POSIX_ACLS'):
        default_static_modules.extend(TO_LIST('vfs_posixacl'))

    if conf.CONFIG_SET('HAVE_FREEBSD_SUNACL_H'):
        default_shared_modules.extend(TO_LIST('vfs_zfsacl'))

    if conf.CONFIG_SET('HAVE_DIRFD_DECL'):
        default_shared_modules.extend(TO_LIST('vfs_syncops vfs_dirsort'))

    if conf.CONFIG_SET('HAVE_STATFS_F_FSID'):
        default_shared_modules.extend(TO_LIST('vfs_fileid'))

    if conf.CONFIG_SET('HAVE_AIO') and (conf.CONFIG_SET('HAVE_MSGHDR_MSG_CONTROL') or conf.CONFIG_SET('HAVE_MSGHDR_MSG_ACCTRIGHTS')):
        default_shared_modules.extend(TO_LIST('vfs_aio_fork'))

    if conf.CONFIG_SET('HAVE_AIO') and Options.options.with_pthreadpool:
        default_shared_modules.extend(TO_LIST('vfs_aio_pthread'))

    if conf.CONFIG_SET('HAVE_LDAP'):
        default_static_modules.extend(TO_LIST('pdb_ldap idmap_ldap'))

    if conf.CONFIG_SET('DARWINOS'):
        default_static_modules.extend(TO_LIST('charset_macosxfs'))

    if conf.CONFIG_SET('HAVE_GPFS'):
        default_shared_modules.extend(TO_LIST('vfs_gpfs vfs_gpfs_hsm_notify'))

    explicit_shared_modules = TO_LIST(Options.options.shared_modules, delimiter=',')
    explicit_static_modules = TO_LIST(Options.options.static_modules, delimiter=',')

    final_static_modules = default_static_modules
    final_shared_modules = default_shared_modules

    for m in explicit_static_modules:
        if m in final_shared_modules:
            final_shared_modules.remove(m)
        final_static_modules.append(m)
    for m in explicit_shared_modules:
        if m in final_static_modules:
            final_static_modules.remove(m)
        final_shared_modules.append(m)

    conf.env['static_modules'] = final_static_modules
    conf.env['shared_modules'] = final_shared_modules

    conf.DEFINE('STRING_STATIC_MODULES', ' '.join(final_static_modules), quote=True)

    static_list = {}
    shared_list = {}

    prefixes = ['vfs', 'pdb', 'auth', 'nss_info', 'charset', 'idmap', 'gpext', 'perfcount']
    conf.env['MODULE_PREFIXES'] = prefixes
    for p in prefixes:
        for m in final_static_modules:
            if m.find(p) == 0:
                if not p in static_list:
                    static_list[p] = []
                static_list[p].append(m)
        for m in final_shared_modules:
            if m.find(p) == 0:
                if not p in shared_list:
                    shared_list[p] = []
                shared_list[p].append(m)

    for p in prefixes:
        static_env = "%s_STATIC" % p.upper()
        shared_env = "%s_SHARED" % p.upper()
        conf.env[static_env] = []
        conf.env[shared_env] = []
        if p in static_list:
            decl_list=""
            for entry in static_list[p]:
                decl_list += "extern NTSTATUS %s_init(void); " % entry
                conf.env[static_env].append('%s' % entry)
            decl_list = decl_list.rstrip()
            conf.DEFINE('static_decl_%s' % p, decl_list)
            conf.DEFINE('static_init_%s' % p, '{ %s_init(); }' % '_init();  '.join(static_list[p]))
        else:
            conf.DEFINE('static_decl_%s' % p, '')
            conf.DEFINE('static_init_%s' % p, '{}')
        if p in shared_list:
            for entry in shared_list[p]:
                conf.DEFINE('%s_init' % entry, 'samba_init_module')
                conf.env[shared_env].append('%s' % entry)

    conf.SAMBA_CONFIG_H('include/config.h')

def ctags(ctx):
    "build 'tags' file using ctags"
    import Utils
    source_root = os.path.dirname(Utils.g_module.root_path)
    cmd = 'ctags $(find %s/.. -name "*.[ch]" | grep -v "*_proto\.h")' % source_root
    print("Running: %s" % cmd)
    os.system(cmd)