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
|
# acx_nlnetlabs.m4 - common macros for configure checks
# Copyright 2009, Wouter Wijngaards, NLnet Labs.
# BSD licensed.
#
# Version 48
# 2024-01-16 fix to add -l:libssp.a to -lcrypto link check.
# and check for getaddrinfo with only header.
# 2024-01-15 fix to add crypt32 to -lcrypto link check when checking for gdi32.
# 2023-05-04 fix to remove unused whitespace.
# 2023-01-26 fix -Wstrict-prototypes.
# 2022-09-01 fix checking if nonblocking sockets work on OpenBSD.
# 2021-08-17 fix sed script in ssldir split handling.
# 2021-08-17 fix for openssl to detect split version, with ssldir_include
# and ssldir_lib output directories.
# 2021-07-30 fix for openssl use of lib64 directory.
# 2021-06-14 fix nonblocking test to use host instead of target for mingw test.
# 2021-05-17 fix nonblocking socket test from grep on mingw32 to mingw for
# 64bit compatibility.
# 2021-03-24 fix ACX_FUNC_DEPRECATED to use CPPFLAGS and CFLAGS.
# 2021-01-05 fix defun for aclocal
# 2021-01-05 autoconf 2.70 autoupdate and fixes, no AC_TRY_COMPILE
# 2020-08-24 Use EVP_sha256 instead of HMAC_Update (for openssl-3.0.0).
# 2016-03-21 Check -ldl -pthread for libcrypto for ldns and openssl 1.1.0.
# 2016-03-21 Use HMAC_Update instead of HMAC_CTX_Init (for openssl-1.1.0).
# 2016-01-04 -D_DEFAULT_SOURCE defined with -D_BSD_SOURCE for Linux glibc 2.20
# 2015-12-11 FLTO check for new OSX, clang.
# 2015-11-18 spelling check fix.
# 2015-11-05 ACX_SSL_CHECKS no longer adds -ldl needlessly.
# 2015-08-28 ACX_CHECK_PIE and ACX_CHECK_RELRO_NOW added.
# 2015-03-17 AHX_CONFIG_REALLOCARRAY added
# 2013-09-19 FLTO help text improved.
# 2013-07-18 Enable ACX_CHECK_COMPILER_FLAG to test for -Wstrict-prototypes
# 2013-06-25 FLTO has --disable-flto option.
# 2013-05-03 Update W32_SLEEP for newer mingw that links but not defines it.
# 2013-03-22 Fix ACX_RSRC_VERSION for long version numbers.
# 2012-02-09 Fix AHX_MEMCMP_BROKEN with undef in compat/memcmp.h.
# 2012-01-20 Fix COMPILER_FLAGS_UNBOUND for gcc 4.6.2 assigned-not-used-warns.
# 2011-12-05 Fix getaddrinfowithincludes on windows with fedora16 mingw32-gcc.
# Fix ACX_MALLOC for redefined malloc error.
# Fix GETADDRINFO_WITH_INCLUDES to add -lws2_32
# 2011-11-10 Fix FLTO test to not drop a.out in current directory.
# 2011-11-01 Fix FLTO test for llvm on Lion.
# 2011-08-01 Fix nonblock test (broken at v13).
# 2011-08-01 Fix autoconf 2.68 warnings
# 2011-06-23 Add ACX_CHECK_FLTO to check -flto.
# 2010-08-16 Fix FLAG_OMITTED for AS_TR_CPP changes in autoconf-2.66.
# 2010-07-02 Add check for ss_family (for minix).
# 2010-04-26 Fix to use CPPFLAGS for CHECK_COMPILER_FLAGS.
# 2010-03-01 Fix RPATH using CONFIG_COMMANDS to run at the very end.
# 2010-02-18 WITH_SSL outputs the LIBSSL_LDFLAGS, LIBS, CPPFLAGS separate, -ldl
# 2010-02-01 added ACX_CHECK_MEMCMP_SIGNED, AHX_MEMCMP_BROKEN
# 2010-01-20 added AHX_COONFIG_STRLCAT
# 2009-07-14 U_CHAR detection improved for windows crosscompile.
# added ACX_FUNC_MALLOC
# fixup some #if to #ifdef
# NONBLOCKING test for mingw crosscompile.
# 2009-07-13 added ACX_WITH_SSL_OPTIONAL
# 2009-07-03 fixup LDFLAGS for empty ssl dir.
#
# Automates some of the checking constructs. Aims at portability for POSIX.
# Documentation for functions is below.
#
# the following macro's are provided in this file:
# (see below for details on each macro).
#
# ACX_ESCAPE_BACKSLASH - escape backslashes in var for C-preproc.
# ACX_RSRC_VERSION - create windows resource version number.
# ACX_CHECK_COMPILER_FLAG - see if cc supports a flag.
# ACX_CHECK_ERROR_FLAGS - see which flag is -werror (used below).
# ACX_CHECK_COMPILER_FLAG_NEEDED - see if flags make the code compile cleanly.
# ACX_DEPFLAG - find cc dependency flags.
# ACX_DETERMINE_EXT_FLAGS_UNBOUND - find out which flags enable BSD and POSIX.
# ACX_CHECK_FORMAT_ATTRIBUTE - find cc printf format syntax.
# ACX_CHECK_UNUSED_ATTRIBUTE - find cc variable unused syntax.
# ACX_CHECK_FLTO - see if cc supports -flto and use it if so.
# ACX_LIBTOOL_C_ONLY - create libtool for C only, improved.
# ACX_TYPE_U_CHAR - u_char type.
# ACX_TYPE_RLIM_T - rlim_t type.
# ACX_TYPE_SOCKLEN_T - socklen_t type.
# ACX_TYPE_IN_ADDR_T - in_addr_t type.
# ACX_TYPE_IN_PORT_T - in_port_t type.
# ACX_ARG_RPATH - add --disable-rpath option.
# ACX_WITH_SSL - add --with-ssl option, link -lcrypto.
# ACX_WITH_SSL_OPTIONAL - add --with-ssl option, link -lcrypto,
# where --without-ssl is also accepted
# ACX_LIB_SSL - setup to link -lssl.
# ACX_SYS_LARGEFILE - improved sys_largefile, fseeko, >2G files.
# ACX_CHECK_GETADDRINFO_WITH_INCLUDES - find getaddrinfo, portably.
# ACX_FUNC_DEPRECATED - see if func is deprecated.
# ACX_CHECK_NONBLOCKING_BROKEN - see if nonblocking sockets really work.
# ACX_MKDIR_ONE_ARG - determine mkdir(2) number of arguments.
# ACX_FUNC_IOCTLSOCKET - find ioctlsocket, portably.
# ACX_FUNC_MALLOC - check malloc, define replacement .
# AHX_CONFIG_FORMAT_ATTRIBUTE - config.h text for format.
# AHX_CONFIG_UNUSED_ATTRIBUTE - config.h text for unused.
# AHX_CONFIG_FSEEKO - define fseeko, ftello fallback.
# AHX_CONFIG_RAND_MAX - define RAND_MAX if needed.
# AHX_CONFIG_MAXHOSTNAMELEN - define MAXHOSTNAMELEN if needed.
# AHX_CONFIG_IPV6_MIN_MTU - define IPV6_MIN_MTU if needed.
# AHX_CONFIG_SNPRINTF - snprintf compat prototype
# AHX_CONFIG_INET_PTON - inet_pton compat prototype
# AHX_CONFIG_INET_NTOP - inet_ntop compat prototype
# AHX_CONFIG_INET_ATON - inet_aton compat prototype
# AHX_CONFIG_MEMMOVE - memmove compat prototype
# AHX_CONFIG_STRLCAT - strlcat compat prototype
# AHX_CONFIG_STRLCPY - strlcpy compat prototype
# AHX_CONFIG_GMTIME_R - gmtime_r compat prototype
# AHX_CONFIG_W32_SLEEP - w32 compat for sleep
# AHX_CONFIG_W32_USLEEP - w32 compat for usleep
# AHX_CONFIG_W32_RANDOM - w32 compat for random
# AHX_CONFIG_W32_SRANDOM - w32 compat for srandom
# AHX_CONFIG_W32_FD_SET_T - w32 detection of FD_SET_T.
# ACX_CFLAGS_STRIP - strip one flag from CFLAGS
# ACX_STRIP_EXT_FLAGS - strip extension flags from CFLAGS
# AHX_CONFIG_FLAG_OMITTED - define omitted flag
# AHX_CONFIG_FLAG_EXT - define omitted extension flag
# AHX_CONFIG_EXT_FLAGS - define the stripped extension flags
# ACX_CHECK_MEMCMP_SIGNED - check if memcmp uses signed characters.
# AHX_MEMCMP_BROKEN - replace memcmp func for CHECK_MEMCMP_SIGNED.
# ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family
# ACX_CHECK_PIE - add --enable-pie option and check if works
# ACX_CHECK_RELRO_NOW - add --enable-relro-now option and check it
#
dnl Escape backslashes as \\, for C:\ paths, for the C preprocessor defines.
dnl for example, ACX_ESCAPE_BACKSLASH($from_var, to_var)
dnl $1: the text to change.
dnl $2: the result.
AC_DEFUN([ACX_ESCAPE_BACKSLASH], [$2="`echo $1 | sed -e 's/\\\\/\\\\\\\\/g'`"
])
dnl Calculate comma separated windows-resource numbers from package version.
dnl Picks the first three(,0) or four numbers out of the name.
dnl $1: variable for the result
AC_DEFUN([ACX_RSRC_VERSION],
[$1=[`echo $PACKAGE_VERSION | sed -e 's/^[^0-9]*\([0-9][0-9]*\)[^0-9][^0-9]*\([0-9][0-9]*\)[^0-9][^0-9]*\([0-9][0-9]*\)[^0-9][^0-9]*\([0-9][0-9]*\).*$/\1,\2,\3,\4/' -e 's/^[^0-9]*\([0-9][0-9]*\)[^0-9][^0-9]*\([0-9][0-9]*\)[^0-9][^0-9]*\([0-9][0-9]*\)[^0-9]*$/\1,\2,\3,0/' `]
])
dnl Routine to help check for compiler flags.
dnl Checks if the compiler will accept the flag.
dnl $1: the flag without a - in front, so g to check -g.
dnl $2: executed if yes
dnl $3: executed if no
AC_DEFUN([ACX_CHECK_COMPILER_FLAG],
[
AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING(whether $CC supports -$1)
cache=`echo $1 | sed 'y%.=/+-%___p_%'`
AC_CACHE_VAL(cv_prog_cc_flag_$cache,
[
echo 'void f(void){}' >conftest.c
if test -z "`$CC $CPPFLAGS $CFLAGS -$1 -c conftest.c 2>&1`"; then
eval "cv_prog_cc_flag_$cache=yes"
else
eval "cv_prog_cc_flag_$cache=no"
fi
rm -f conftest conftest.o conftest.c
])
if eval "test \"`echo '$cv_prog_cc_flag_'$cache`\" = yes"; then
AC_MSG_RESULT(yes)
:
$2
else
AC_MSG_RESULT(no)
:
$3
fi
])
dnl setup flags for ACX_CHECK_COMPILER_FLAG_NEEDED
dnl ERRFLAG: result, compiler flag to turn warnings into errors
AC_DEFUN([ACX_CHECK_ERROR_FLAGS],
[
ACX_CHECK_COMPILER_FLAG(Werror, [ERRFLAG="-Werror"], [ERRFLAG="-errwarn"])
ACX_CHECK_COMPILER_FLAG(Wall, [ERRFLAG="$ERRFLAG -Wall"],
[ERRFLAG="$ERRFLAG -errfmt"])
])
dnl Routine to help check for needed compiler flags.
dnl $1: flags for CC
dnl $2: the includes and code
dnl $3: if the given code only compiles with the flag, execute argument 3
dnl $4: if the given code compiles without the flag, execute argument 4
dnl $5: with and without flag the compile fails, execute argument 5.
AC_DEFUN([ACX_CHECK_COMPILER_FLAG_NEEDED],
[
AC_REQUIRE([AC_PROG_CC])
AC_REQUIRE([ACX_CHECK_ERROR_FLAGS])
AC_MSG_CHECKING(whether we need $1 as a flag for $CC)
cache=AS_TR_SH($1)
dnl cache=`echo $1 | sed 'y%.=/+- %___p__%'`
AC_CACHE_VAL(cv_prog_cc_flag_needed_$cache,
[
echo '$2' > conftest.c
echo 'void f(void){}' >>conftest.c
if test -z "`$CC $CPPFLAGS $CFLAGS $ERRFLAG -c conftest.c 2>&1`"; then
eval "cv_prog_cc_flag_needed_$cache=no"
else
[
if test -z "`$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`"; then
eval "cv_prog_cc_flag_needed_$cache=yes"
else
eval "cv_prog_cc_flag_needed_$cache=fail"
#echo 'Test with flag fails too!'
#cat conftest.c
#echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1"
#echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`
#exit 1
fi
]
fi
rm -f conftest conftest.c conftest.o
])
if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = yes"; then
AC_MSG_RESULT(yes)
:
$3
else
if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = no"; then
AC_MSG_RESULT(no)
#echo 'Test with flag is no!'
#cat conftest.c
#echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1"
#echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`
#exit 1
:
$4
else
AC_MSG_RESULT(failed)
:
$5
fi
fi
])
dnl Check for CC dependency flag
dnl DEPFLAG: set to flag that generates dependencies.
AC_DEFUN([ACX_DEPFLAG],
[
AC_MSG_CHECKING([$CC dependency flag])
echo 'void f(void){}' >conftest.c
if test "`$CC -MM conftest.c 2>&1`" = "conftest.o: conftest.c"; then
DEPFLAG="-MM"
else
if test "`$CC -xM1 conftest.c 2>&1`" = "conftest.o: conftest.c"; then
DEPFLAG="-xM1"
else
DEPFLAG="-MM" # dunno do something
fi
fi
AC_MSG_RESULT($DEPFLAG)
rm -f conftest.c
AC_SUBST(DEPFLAG)
])
dnl Determine flags that gives POSIX and BSD functionality.
dnl CFLAGS is modified for the result.
AC_DEFUN([ACX_DETERMINE_EXT_FLAGS_UNBOUND],
[
ACX_CHECK_COMPILER_FLAG(std=c99, [C99FLAG="-std=c99"])
ACX_CHECK_COMPILER_FLAG(xc99, [C99FLAG="-xc99"])
AC_CHECK_HEADERS([getopt.h time.h],,, [AC_INCLUDES_DEFAULT])
ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE,
[
#include "confdefs.h"
#include <stdlib.h>
#include <ctype.h>
#include <sys/time.h>
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#include <unistd.h>
#include <netdb.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
int test(void) {
int a;
char **opts = NULL;
struct timeval tv;
char *t;
time_t time = 0;
char *buf = NULL;
const char* str = NULL;
struct msghdr msg;
msg.msg_control = 0;
t = ctime_r(&time, buf);
tv.tv_usec = 10;
srandom(32);
a = getopt(2, opts, "a");
a = isascii(32);
str = gai_strerror(0);
if(str && t && tv.tv_usec && msg.msg_control)
a = 0;
return a;
}
], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE"])
ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE,
[
#include "confdefs.h"
#include <stdlib.h>
#include <ctype.h>
#include <sys/time.h>
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#include <unistd.h>
#include <netdb.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
int test(void) {
int a;
char **opts = NULL;
struct timeval tv;
char *t;
time_t time = 0;
char *buf = NULL;
const char* str = NULL;
struct msghdr msg;
msg.msg_control = 0;
t = ctime_r(&time, buf);
tv.tv_usec = 10;
srandom(32);
a = getopt(2, opts, "a");
a = isascii(32);
str = gai_strerror(0);
if(str && t && tv.tv_usec && msg.msg_control)
a = 0;
return a;
}
], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE"])
ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG,
[
#include <stdbool.h>
#include <ctype.h>
int test(void) {
int a = 0;
return a;
}
], [CFLAGS="$CFLAGS $C99FLAG"])
ACX_CHECK_COMPILER_FLAG_NEEDED(-D_BSD_SOURCE -D_DEFAULT_SOURCE,
[
#include <ctype.h>
int test(void) {
int a;
a = isascii(32);
return a;
}
], [CFLAGS="$CFLAGS -D_BSD_SOURCE -D_DEFAULT_SOURCE"])
ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE,
[
#include <netinet/in.h>
int test(void) {
struct in6_pktinfo inf;
int a = (int)sizeof(inf);
return a;
}
], [CFLAGS="$CFLAGS -D_GNU_SOURCE"])
# check again for GNU_SOURCE for setresgid. May fail if setresgid
# is not available at all. -D_FRSRESGID is to make this check unique.
# otherwise we would get the previous cached result.
ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE -D_FRSRESGID,
[
#include <unistd.h>
int test(void) {
int a = setresgid(0,0,0);
a = setresuid(0,0,0);
return a;
}
], [CFLAGS="$CFLAGS -D_GNU_SOURCE"])
ACX_CHECK_COMPILER_FLAG_NEEDED(-D_POSIX_C_SOURCE=200112,
[
#include "confdefs.h"
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#include <netdb.h>
int test(void) {
int a = 0;
char *t;
time_t time = 0;
char *buf = NULL;
const char* str = NULL;
t = ctime_r(&time, buf);
str = gai_strerror(0);
if(t && str)
a = 0;
return a;
}
], [CFLAGS="$CFLAGS -D_POSIX_C_SOURCE=200112"])
ACX_CHECK_COMPILER_FLAG_NEEDED(-D__EXTENSIONS__,
[
#include "confdefs.h"
#include <stdlib.h>
#include <ctype.h>
#include <sys/time.h>
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#include <unistd.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
int test(void) {
int a;
char **opts = NULL;
struct timeval tv;
tv.tv_usec = 10;
srandom(32);
a = getopt(2, opts, "a");
a = isascii(32);
if(tv.tv_usec)
a = 0;
return a;
}
], [CFLAGS="$CFLAGS -D__EXTENSIONS__"])
])dnl End of ACX_DETERMINE_EXT_FLAGS_UNBOUND
dnl Check if CC supports -flto.
dnl in a way that supports clang and suncc (that flag does something else,
dnl but fails to link). It sets it in CFLAGS if it works.
AC_DEFUN([ACX_CHECK_FLTO], [
AC_ARG_ENABLE([flto], AS_HELP_STRING([--disable-flto], [Disable link-time optimization (gcc specific option)]))
AS_IF([test "x$enable_flto" != "xno"], [
AC_MSG_CHECKING([if $CC supports -flto])
BAKCFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -flto"
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [
if $CC $CFLAGS -o conftest conftest.c 2>&1 | $GREP -e "warning: no debug symbols in executable" -e "warning: object" >/dev/null; then
CFLAGS="$BAKCFLAGS"
AC_MSG_RESULT(no)
else
AC_MSG_RESULT(yes)
fi
rm -f conftest conftest.c conftest.o
], [CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)])
])
])
dnl Check the printf-format attribute (if any)
dnl result in HAVE_ATTR_FORMAT.
dnl Make sure you also include the AHX_CONFIG_FORMAT_ATTRIBUTE.
AC_DEFUN([ACX_CHECK_FORMAT_ATTRIBUTE],
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "format" attribute)
AC_CACHE_VAL(ac_cv_c_format_attribute,
[ac_cv_c_format_attribute=no
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
void f (char *format, ...) __attribute__ ((format (printf, 1, 2)));
void (*pf) (char *format, ...) __attribute__ ((format (printf, 1, 2)));
]], [[
f ("%s", "str");
]])],[ac_cv_c_format_attribute="yes"],[ac_cv_c_format_attribute="no"])
])
AC_MSG_RESULT($ac_cv_c_format_attribute)
if test $ac_cv_c_format_attribute = yes; then
AC_DEFINE(HAVE_ATTR_FORMAT, 1, [Whether the C compiler accepts the "format" attribute])
fi
])dnl End of ACX_CHECK_FORMAT_ATTRIBUTE
dnl Setup ATTR_FORMAT config.h parts.
dnl make sure you call ACX_CHECK_FORMAT_ATTRIBUTE also.
AC_DEFUN([AHX_CONFIG_FORMAT_ATTRIBUTE],
[
#ifdef HAVE_ATTR_FORMAT
# define ATTR_FORMAT(archetype, string_index, first_to_check) \
__attribute__ ((format (archetype, string_index, first_to_check)))
#else /* !HAVE_ATTR_FORMAT */
# define ATTR_FORMAT(archetype, string_index, first_to_check) /* empty */
#endif /* !HAVE_ATTR_FORMAT */
])
dnl Check how to mark function arguments as unused.
dnl result in HAVE_ATTR_UNUSED.
dnl Make sure you include AHX_CONFIG_UNUSED_ATTRIBUTE also.
AC_DEFUN([ACX_CHECK_UNUSED_ATTRIBUTE],
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "unused" attribute)
AC_CACHE_VAL(ac_cv_c_unused_attribute,
[ac_cv_c_unused_attribute=no
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
void f (char *u __attribute__((unused)));
]], [[
f ("x");
]])],[ac_cv_c_unused_attribute="yes"],[ac_cv_c_unused_attribute="no"])
])
dnl Setup ATTR_UNUSED config.h parts.
dnl make sure you call ACX_CHECK_UNUSED_ATTRIBUTE also.
AC_DEFUN([AHX_CONFIG_UNUSED_ATTRIBUTE],
[
#if defined(DOXYGEN)
# define ATTR_UNUSED(x) x
#elif defined(__cplusplus)
# define ATTR_UNUSED(x)
#elif defined(HAVE_ATTR_UNUSED)
# define ATTR_UNUSED(x) x __attribute__((unused))
#else /* !HAVE_ATTR_UNUSED */
# define ATTR_UNUSED(x) x
#endif /* !HAVE_ATTR_UNUSED */
])
AC_MSG_RESULT($ac_cv_c_unused_attribute)
if test $ac_cv_c_unused_attribute = yes; then
AC_DEFINE(HAVE_ATTR_UNUSED, 1, [Whether the C compiler accepts the "unused" attribute])
fi
])dnl
dnl Pre-fun for ACX_LIBTOOL_C_ONLY
AC_DEFUN([ACX_LIBTOOL_C_PRE], [
# skip these tests, we do not need them.
AC_DEFUN([AC_PROG_F77], [:])
AC_DEFUN([AC_PROG_FC], [:])
AC_DEFUN([AC_PROG_CXX], [:])
AC_DEFUN([AC_PROG_CXXCPP], [:])
AC_DEFUN([AC_PROG_OBJC], [:])
AC_DEFUN([AC_PROG_OBJCCPP], [:])
AC_DEFUN([AC_LIBTOOL_CXX], [:])
AC_DEFUN([AC_LIBTOOL_F77], [:])
# always use ./libtool unless override from commandline (libtool=mylibtool)
if test -z "$libtool"; then
libtool="./libtool"
fi
AC_SUBST(libtool)
# avoid libtool max commandline length test on systems that fork slowly.
AC_CANONICAL_HOST
if echo "$host_os" | grep "sunos4" >/dev/null; then
lt_cv_sys_max_cmd_len=32750;
fi
AC_PATH_TOOL(AR, ar, [false])
if test $AR = false; then
AC_MSG_ERROR([Cannot find 'ar', please extend PATH to include it])
fi
])
dnl Perform libtool check, portably, only for C
AC_DEFUN([ACX_LIBTOOL_C_ONLY], [
dnl as a requirement so that is gets called before LIBTOOL
dnl because libtools 'AC_REQUIRE' names are right after this one, before
dnl this function contents.
AC_REQUIRE([ACX_LIBTOOL_C_PRE])
LT_INIT
])
dnl Detect if u_char type is defined, otherwise define it.
AC_DEFUN([ACX_TYPE_U_CHAR],
[AC_CHECK_TYPE([u_char], ,
[AC_DEFINE([u_char], [unsigned char], [Define to 'unsigned char if not defined])], [
AC_INCLUDES_DEFAULT
#ifdef HAVE_WINSOCK2_H
# include <winsock2.h>
#endif
]) ])
dnl Detect if rlim_t type is defined, otherwise define it.
AC_DEFUN([ACX_TYPE_RLIM_T],
[AC_CHECK_TYPE(rlim_t, ,
[AC_DEFINE([rlim_t], [unsigned long], [Define to 'int' if not defined])], [
AC_INCLUDES_DEFAULT
#ifdef HAVE_SYS_RESOURCE_H
# include <sys/resource.h>
#endif
]) ])
dnl Detect if socklen_t type is defined, otherwise define it.
AC_DEFUN([ACX_TYPE_SOCKLEN_T],
[
AC_CHECK_TYPE(socklen_t, ,
[AC_DEFINE([socklen_t], [int], [Define to 'int' if not defined])], [
AC_INCLUDES_DEFAULT
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#ifdef HAVE_WS2TCPIP_H
# include <ws2tcpip.h>
#endif
]) ])
dnl Detect if in_addr_t type is defined, otherwise define it.
AC_DEFUN([ACX_TYPE_IN_ADDR_T],
[ AC_CHECK_TYPE(in_addr_t, [], [AC_DEFINE([in_addr_t], [uint32_t], [in_addr_t])], [
AC_INCLUDES_DEFAULT
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
]) ])
dnl Detect if in_port_t type is defined, otherwise define it.
AC_DEFUN([ACX_TYPE_IN_PORT_T],
[ AC_CHECK_TYPE(in_port_t, [], [AC_DEFINE([in_port_t], [uint16_t], [in_port_t])], [
AC_INCLUDES_DEFAULT
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
]) ])
dnl Add option to disable the evil rpath. Check whether to use rpath or not.
dnl Adds the --disable-rpath option. Uses trick to edit the ./libtool.
AC_DEFUN([ACX_ARG_RPATH],
[
AC_ARG_ENABLE(rpath,
[ --disable-rpath disable hardcoded rpath (default=enabled)],
enable_rpath=$enableval, enable_rpath=yes)
if test "x$enable_rpath" = xno; then
dnl AC_MSG_RESULT([Fixing libtool for -rpath problems.])
AC_CONFIG_COMMANDS([disable-rpath], [
sed < libtool > libtool-2 \
's/^hardcode_libdir_flag_spec.*$'/'hardcode_libdir_flag_spec=" -D__LIBTOOL_RPATH_SED__ "/'
mv libtool-2 libtool
chmod 755 libtool
libtool="./libtool"
])
fi
])
dnl Add a -R to the RUNTIME_PATH. Only if rpath is enabled and it is
dnl an absolute path.
dnl $1: the pathname to add.
AC_DEFUN([ACX_RUNTIME_PATH_ADD], [
if test "x$enable_rpath" = xyes; then
if echo "$1" | grep "^/" >/dev/null; then
RUNTIME_PATH="$RUNTIME_PATH -R$1"
fi
fi
])
dnl Common code for both ACX_WITH_SSL and ACX_WITH_SSL_OPTIONAL
dnl Takes one argument; the withval checked in those 2 functions
dnl sets up the environment for the given openssl path
AC_DEFUN([ACX_SSL_CHECKS], [
withval=$1
if test x_$withval != x_no; then
AC_MSG_CHECKING(for SSL)
if test -n "$withval"; then
dnl look for openssl install with different version, eg.
dnl in /usr/include/openssl11/openssl/ssl.h
dnl and /usr/lib64/openssl11/libssl.so
dnl with the --with-ssl=/usr/include/openssl11
if test ! -f "$withval/include/openssl/ssl.h" -a -f "$withval/openssl/ssl.h"; then
ssldir="$withval"
found_ssl="yes"
withval=""
ssldir_include="$ssldir"
dnl find the libdir
ssldir_lib=`echo $ssldir | sed -e 's/include/lib/'`
if test -f "$ssldir_lib/libssl.a" -o -f "$ssldir_lib/libssl.so"; then
: # found here
else
ssldir_lib=`echo $ssldir | sed -e 's/include/lib64/'`
if test -f "$ssldir_lib/libssl.a" -o -f "$ssldir_lib/libssl.so"; then
: # found here
else
AC_MSG_ERROR([Could not find openssl lib file, $ssldir_lib/libssl.[so,a], pass like "/usr/local" or "/usr/include/openssl11"])
fi
fi
fi
fi
if test x_$withval = x_ -o x_$withval = x_yes; then
withval="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr"
fi
for dir in $withval; do
ssldir="$dir"
if test -f "$dir/include/openssl/ssl.h"; then
found_ssl="yes"
ssldir_include="$ssldir/include"
if test ! -d "$ssldir/lib" -a -d "$ssldir/lib64"; then
ssldir_lib="$ssldir/lib64"
else
ssldir_lib="$ssldir/lib"
fi
break;
fi
done
if test x_$found_ssl != x_yes; then
AC_MSG_ERROR(Cannot find the SSL libraries in $withval)
else
AC_MSG_RESULT(found in $ssldir)
AC_DEFINE_UNQUOTED([HAVE_SSL], [], [Define if you have the SSL libraries installed.])
HAVE_SSL=yes
dnl assume /usr is already in the include, lib and dynlib paths.
if test "$ssldir" != "/usr"; then
CPPFLAGS="$CPPFLAGS -I$ssldir_include"
LIBSSL_CPPFLAGS="$LIBSSL_CPPFLAGS -I$ssldir_include"
LDFLAGS="$LDFLAGS -L$ssldir_lib"
LIBSSL_LDFLAGS="$LIBSSL_LDFLAGS -L$ssldir_lib"
ACX_RUNTIME_PATH_ADD([$ssldir_lib])
fi
AC_MSG_CHECKING([for EVP_sha256 in -lcrypto])
LIBS="$LIBS -lcrypto"
LIBSSL_LIBS="$LIBSSL_LIBS -lcrypto"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[
int EVP_sha256(void);
(void)EVP_sha256();
]])],[
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_EVP_SHA256], 1,
[If you have EVP_sha256])
],[
AC_MSG_RESULT(no)
# check if -lwsock32 or -lgdi32 are needed.
BAKLIBS="$LIBS"
BAKSSLLIBS="$LIBSSL_LIBS"
LIBS="$LIBS -lgdi32 -lws2_32"
LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32 -lws2_32"
AC_MSG_CHECKING([if -lcrypto needs -lgdi32])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[
int EVP_sha256(void);
(void)EVP_sha256();
]])],[
AC_DEFINE([HAVE_EVP_SHA256], 1,
[If you have EVP_sha256])
AC_MSG_RESULT(yes)
],[
AC_MSG_RESULT(no)
LIBS="$BAKLIBS"
LIBSSL_LIBS="$BAKSSLLIBS"
LIBS="$LIBS -lgdi32 -lws2_32 -lcrypt32"
LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32 -lws2_32 -lcrypt32"
AC_MSG_CHECKING([if -lcrypto needs -lgdi32 -lws2_32 -lcrypt32])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[
int EVP_sha256(void);
(void)EVP_sha256();
]])],[
AC_DEFINE([HAVE_EVP_SHA256], 1,
[If you have EVP_sha256])
AC_MSG_RESULT(yes)
],[
AC_MSG_RESULT(no)
LIBS="$BAKLIBS"
LIBSSL_LIBS="$BAKSSLLIBS"
LIBS="$LIBS -lgdi32 -lws2_32 -lcrypt32 -l:libssp.a"
LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32 -lws2_32 -lcrypt32 -l:libssp.a"
AC_MSG_CHECKING([if -lcrypto needs -lgdi32 -lws2_32 -lcrypt32 -l:libssp.a])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[
int EVP_sha256(void);
(void)EVP_sha256();
]])],[
AC_DEFINE([HAVE_EVP_SHA256], 1,
[If you have EVP_sha256])
AC_MSG_RESULT(yes)
],[
AC_MSG_RESULT(no)
LIBS="$BAKLIBS"
LIBSSL_LIBS="$BAKSSLLIBS"
LIBS="$LIBS -ldl"
LIBSSL_LIBS="$LIBSSL_LIBS -ldl"
AC_MSG_CHECKING([if -lcrypto needs -ldl])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[
int EVP_sha256(void);
(void)EVP_sha256();
]])],[
AC_DEFINE([HAVE_EVP_SHA256], 1,
[If you have EVP_sha256])
AC_MSG_RESULT(yes)
],[
AC_MSG_RESULT(no)
LIBS="$BAKLIBS"
LIBSSL_LIBS="$BAKSSLLIBS"
LIBS="$LIBS -ldl -pthread"
LIBSSL_LIBS="$LIBSSL_LIBS -ldl -pthread"
AC_MSG_CHECKING([if -lcrypto needs -ldl -pthread])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[
int EVP_sha256(void);
(void)EVP_sha256();
]])],[
AC_DEFINE([HAVE_EVP_SHA256], 1,
[If you have EVP_sha256])
AC_MSG_RESULT(yes)
],[
AC_MSG_RESULT(no)
AC_MSG_ERROR([OpenSSL found in $ssldir, but version 0.9.7 or higher is required])
])
])
])
])
])
])
fi
AC_SUBST(HAVE_SSL)
AC_SUBST(RUNTIME_PATH)
fi
AC_CHECK_HEADERS([openssl/ssl.h],,, [AC_INCLUDES_DEFAULT])
AC_CHECK_HEADERS([openssl/err.h],,, [AC_INCLUDES_DEFAULT])
AC_CHECK_HEADERS([openssl/rand.h],,, [AC_INCLUDES_DEFAULT])
])dnl End of ACX_SSL_CHECKS
dnl Check for SSL, where SSL is mandatory
dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found
dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS.
dnl Checks main header files of SSL.
dnl
AC_DEFUN([ACX_WITH_SSL],
[
AC_ARG_WITH(ssl, AS_HELP_STRING([--with-ssl=pathname],[enable SSL (will check /usr/local/ssl
/usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr or specify like /usr/include/openssl11)]),[
],[
withval="yes"
])
if test x_$withval = x_no; then
AC_MSG_ERROR([Need SSL library to do digital signature cryptography])
fi
ACX_SSL_CHECKS($withval)
])dnl End of ACX_WITH_SSL
dnl Check for SSL, where ssl is optional (--without-ssl is allowed)
dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found
dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS.
dnl Checks main header files of SSL.
dnl
AC_DEFUN([ACX_WITH_SSL_OPTIONAL],
[
AC_ARG_WITH(ssl, AS_HELP_STRING([--with-ssl=pathname],[enable SSL (will check /usr/local/ssl
/usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr or specify like /usr/include/openssl11)]),[
],[
withval="yes"
])
ACX_SSL_CHECKS($withval)
])dnl End of ACX_WITH_SSL_OPTIONAL
dnl Setup to use -lssl
dnl To use -lcrypto, use the ACX_WITH_SSL setup (before this one).
AC_DEFUN([ACX_LIB_SSL],
[
# check if libssl needs libdl
BAKLIBS="$LIBS"
LIBS="-lssl $LIBS"
AC_MSG_CHECKING([if libssl needs libdl])
AC_TRY_LINK_FUNC([SSL_CTX_new], [
AC_MSG_RESULT([no])
LIBS="$BAKLIBS"
] , [
AC_MSG_RESULT([yes])
LIBS="$BAKLIBS"
AC_SEARCH_LIBS([dlopen], [dl])
]) ])dnl End of ACX_LIB_SSL
dnl Setup to use very large files (>2Gb).
dnl setups fseeko and its own
AC_DEFUN([ACX_SYS_LARGEFILE],
[
AC_SYS_LARGEFILE
dnl try to see if an additional _LARGEFILE_SOURCE 1 is needed to get fseeko
ACX_CHECK_COMPILER_FLAG_NEEDED(-D_LARGEFILE_SOURCE=1,
[
#include <stdio.h>
int test(void) {
int a = fseeko(stdin, 0, 0);
return a;
}
], [CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE=1"])
])
dnl Check getaddrinfo.
dnl Works on linux, solaris, bsd and windows(links winsock).
dnl defines HAVE_GETADDRINFO, USE_WINSOCK.
AC_DEFUN([ACX_CHECK_GETADDRINFO_WITH_INCLUDES],
[AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING(for getaddrinfo)
ac_cv_func_getaddrinfo=no
AC_LINK_IFELSE(
[AC_LANG_SOURCE([[
#ifdef __cplusplus
extern "C"
{
#endif
char* getaddrinfo();
char* (*f) () = getaddrinfo;
#ifdef __cplusplus
}
#endif
int main(void) {
;
return 0;
}
]])],
dnl this case on linux, solaris, bsd
[ac_cv_func_getaddrinfo="yes"
dnl see if on windows
if test "$ac_cv_header_windows_h" = "yes"; then
AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used])
USE_WINSOCK="1"
if echo "$LIBS" | grep 'lws2_32' >/dev/null; then
:
else
LIBS="$LIBS -lws2_32"
fi
fi
],
dnl no quick getaddrinfo, try mingw32 and winsock2 library.
dnl perhaps getaddrinfo needs only the include
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
],
[
(void)getaddrinfo(NULL, NULL, NULL, NULL);
]
)],
[
ac_cv_func_getaddrinfo="yes"
AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used])
USE_WINSOCK="1"
],
ORIGLIBS="$LIBS"
LIBS="$LIBS -lws2_32"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[
#ifdef HAVE_WS2TCPIP_H
#include <ws2tcpip.h>
#endif
],
[
(void)getaddrinfo(NULL, NULL, NULL, NULL);
]
)],
[
ac_cv_func_getaddrinfo="yes"
dnl already: LIBS="$LIBS -lws2_32"
AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used])
USE_WINSOCK="1"
],
[
ac_cv_func_getaddrinfo="no"
LIBS="$ORIGLIBS"
])
)
)
AC_MSG_RESULT($ac_cv_func_getaddrinfo)
if test $ac_cv_func_getaddrinfo = yes; then
AC_DEFINE(HAVE_GETADDRINFO, 1, [Whether getaddrinfo is available])
fi
])dnl Endof AC_CHECK_GETADDRINFO_WITH_INCLUDES
dnl check if a function is deprecated. defines DEPRECATED_func in config.h.
dnl $1: function name
dnl $2: C-statement that calls the function.
dnl $3: includes for the program.
dnl $4: executes if yes
dnl $5: executes if no
AC_DEFUN([ACX_FUNC_DEPRECATED],
[
AC_REQUIRE([AC_PROG_CC])
AC_MSG_CHECKING(if $1 is deprecated)
cache=`echo $1 | sed 'y%.=/+-%___p_%'`
AC_CACHE_VAL(cv_cc_deprecated_$cache,
[
echo '$3' >conftest.c
echo 'void f(void){ $2 }' >>conftest.c
if test -z "`$CC $CPPFLAGS $CFLAGS -c conftest.c 2>&1 | grep -e deprecated -e unavailable`"; then
eval "cv_cc_deprecated_$cache=no"
else
eval "cv_cc_deprecated_$cache=yes"
fi
rm -f conftest conftest.o conftest.c
])
if eval "test \"`echo '$cv_cc_deprecated_'$cache`\" = yes"; then
AC_MSG_RESULT(yes)
AC_DEFINE_UNQUOTED(AS_TR_CPP([DEPRECATED_$1]), 1, [Whether $1 is deprecated])
:
$4
else
AC_MSG_RESULT(no)
:
$5
fi
])dnl end of ACX_FUNC_DEPRECATED
dnl check if select and nonblocking sockets actually work.
dnl Needs fork(2) and select(2).
dnl defines NONBLOCKING_IS_BROKEN, and if that is true multiple reads from
dnl a nonblocking socket do not work, a new call to select is necessary.
AC_DEFUN([ACX_CHECK_NONBLOCKING_BROKEN],
[
AC_MSG_CHECKING([if nonblocking sockets work])
if echo $host | grep mingw >/dev/null; then
AC_MSG_RESULT([no (windows)])
AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).])
else
AC_RUN_IFELSE([
AC_LANG_SOURCE([[
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <fcntl.h>
#include <errno.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_TIME_H
#include <time.h>
#endif
int main(void)
{
int port;
int sfd, cfd;
int num = 10;
int i, p;
struct sockaddr_in a;
/* test if select and nonblocking reads work well together */
/* open port.
fork child to send 10 messages.
select to read.
then try to nonblocking read the 10 messages
then, nonblocking read must give EAGAIN
*/
port = 12345 + (time(0)%32);
sfd = socket(PF_INET, SOCK_DGRAM, 0);
if(sfd == -1) {
perror("socket");
return 1;
}
memset(&a, 0, sizeof(a));
a.sin_family = AF_INET;
a.sin_port = htons(port);
a.sin_addr.s_addr = inet_addr("127.0.0.1");
if(bind(sfd, (struct sockaddr*)&a, sizeof(a)) < 0) {
perror("bind");
return 1;
}
if(fcntl(sfd, F_SETFL, O_NONBLOCK) == -1) {
perror("fcntl");
return 1;
}
cfd = socket(PF_INET, SOCK_DGRAM, 0);
if(cfd == -1) {
perror("client socket");
return 1;
}
a.sin_port = 0;
if(bind(cfd, (struct sockaddr*)&a, sizeof(a)) < 0) {
perror("client bind");
return 1;
}
a.sin_port = htons(port);
/* no handler, causes exit in 10 seconds */
alarm(10);
/* send and receive on the socket */
if((p=fork()) == 0) {
for(i=0; i<num; i++) {
if(sendto(cfd, &i, sizeof(i), 0,
(struct sockaddr*)&a, sizeof(a)) < 0) {
perror("sendto");
return 1;
}
}
} else {
/* parent */
fd_set rset;
int x;
if(p == -1) {
perror("fork");
return 1;
}
FD_ZERO(&rset);
FD_SET(sfd, &rset);
if(select(sfd+1, &rset, NULL, NULL, NULL) < 1) {
perror("select");
return 1;
}
i = 0;
while(i < num) {
if(recv(sfd, &x, sizeof(x), 0) != sizeof(x)) {
if(errno == EAGAIN)
continue;
perror("recv");
return 1;
}
i++;
}
/* now we want to get EAGAIN: nonblocking goodness */
errno = 0;
recv(sfd, &x, sizeof(x), 0);
if(errno != EAGAIN) {
perror("trying to recv again");
return 1;
}
/* EAGAIN encountered */
}
close(sfd);
close(cfd);
return 0;
}
]])], [
AC_MSG_RESULT([yes])
], [
AC_MSG_RESULT([no])
AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).])
], [
AC_MSG_RESULT([crosscompile(yes)])
])
fi
])dnl End of ACX_CHECK_NONBLOCKING_BROKEN
dnl Check if mkdir has one or two arguments.
dnl defines MKDIR_HAS_ONE_ARG
AC_DEFUN([ACX_MKDIR_ONE_ARG],
[
AC_MSG_CHECKING([whether mkdir has one arg])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <stdio.h>
#include <unistd.h>
#ifdef HAVE_WINSOCK2_H
#include <winsock2.h>
#endif
#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
]], [[
(void)mkdir("directory");
]])],[AC_MSG_RESULT(yes)
AC_DEFINE(MKDIR_HAS_ONE_ARG, 1, [Define if mkdir has one argument.])
],[AC_MSG_RESULT(no)
])
])dnl end of ACX_MKDIR_ONE_ARG
dnl Check for ioctlsocket function. works on mingw32 too.
AC_DEFUN([ACX_FUNC_IOCTLSOCKET],
[
# check ioctlsocket
AC_MSG_CHECKING(for ioctlsocket)
AC_LINK_IFELSE([AC_LANG_PROGRAM([
#ifdef HAVE_WINSOCK2_H
#include <winsock2.h>
#endif
], [
(void)ioctlsocket(0, 0, NULL);
])], [
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_IOCTLSOCKET, 1, [if the function 'ioctlsocket' is available])
],[AC_MSG_RESULT(no)])
])dnl end of ACX_FUNC_IOCTLSOCKET
dnl detect malloc and provide malloc compat prototype.
dnl $1: unique name for compat code
AC_DEFUN([ACX_FUNC_MALLOC],
[
AC_MSG_CHECKING([for GNU libc compatible malloc])
AC_RUN_IFELSE([AC_LANG_PROGRAM(
[[#if defined STDC_HEADERS || defined HAVE_STDLIB_H
#include <stdlib.h>
#else
char *malloc ();
#endif
]], [ if(malloc(0) != 0) return 1;])
],
[AC_MSG_RESULT([no])
AC_LIBOBJ(malloc)
AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] ,
[AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_MALLOC], 1, [If have GNU libc compatible malloc])],
[AC_MSG_RESULT([no (crosscompile)])
AC_LIBOBJ(malloc)
AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] )
])
dnl Define fallback for fseeko and ftello if needed.
AC_DEFUN([AHX_CONFIG_FSEEKO],
[
#ifndef HAVE_FSEEKO
#define fseeko fseek
#define ftello ftell
#endif /* HAVE_FSEEKO */
])
dnl Define RAND_MAX if not defined
AC_DEFUN([AHX_CONFIG_RAND_MAX],
[
#ifndef RAND_MAX
#define RAND_MAX 2147483647
#endif
])
dnl Define MAXHOSTNAMELEN if not defined
AC_DEFUN([AHX_CONFIG_MAXHOSTNAMELEN],
[
#ifndef MAXHOSTNAMELEN
#define MAXHOSTNAMELEN 256
#endif
])
dnl Define IPV6_MIN_MTU if not defined
AC_DEFUN([AHX_CONFIG_IPV6_MIN_MTU],
[
#ifndef IPV6_MIN_MTU
#define IPV6_MIN_MTU 1280
#endif /* IPV6_MIN_MTU */
])
dnl provide snprintf, vsnprintf compat prototype
dnl $1: unique name for compat code
AC_DEFUN([AHX_CONFIG_SNPRINTF],
[
#ifndef HAVE_SNPRINTF
#define snprintf snprintf_$1
#define vsnprintf vsnprintf_$1
#include <stdarg.h>
int snprintf (char *str, size_t count, const char *fmt, ...);
int vsnprintf (char *str, size_t count, const char *fmt, va_list arg);
#endif /* HAVE_SNPRINTF */
])
dnl provide inet_pton compat prototype.
dnl $1: unique name for compat code
AC_DEFUN([AHX_CONFIG_INET_PTON],
[
#ifndef HAVE_INET_PTON
#define inet_pton inet_pton_$1
int inet_pton(int af, const char* src, void* dst);
#endif /* HAVE_INET_PTON */
])
dnl provide inet_ntop compat prototype.
dnl $1: unique name for compat code
AC_DEFUN([AHX_CONFIG_INET_NTOP],
[
#ifndef HAVE_INET_NTOP
#define inet_ntop inet_ntop_$1
const char *inet_ntop(int af, const void *src, char *dst, size_t size);
#endif
])
dnl provide inet_aton compat prototype.
dnl $1: unique name for compat code
AC_DEFUN([AHX_CONFIG_INET_ATON],
[
#ifndef HAVE_INET_ATON
#define inet_aton inet_aton_$1
int inet_aton(const char *cp, struct in_addr *addr);
#endif
])
dnl provide memmove compat prototype.
dnl $1: unique name for compat code
AC_DEFUN([AHX_CONFIG_MEMMOVE],
[
#ifndef HAVE_MEMMOVE
#define memmove memmove_$1
void *memmove(void *dest, const void *src, size_t n);
#endif
])
dnl provide strlcat compat prototype.
dnl $1: unique name for compat code
AC_DEFUN([AHX_CONFIG_STRLCAT],
[
#ifndef HAVE_STRLCAT
#define strlcat strlcat_$1
size_t strlcat(char *dst, const char *src, size_t siz);
#endif
])
dnl provide strlcpy compat prototype.
dnl $1: unique name for compat code
AC_DEFUN([AHX_CONFIG_STRLCPY],
[
#ifndef HAVE_STRLCPY
#define strlcpy strlcpy_$1
size_t strlcpy(char *dst, const char *src, size_t siz);
#endif
])
dnl provide gmtime_r compat prototype.
dnl $1: unique name for compat code
AC_DEFUN([AHX_CONFIG_GMTIME_R],
[
#ifndef HAVE_GMTIME_R
#define gmtime_r gmtime_r_$1
struct tm *gmtime_r(const time_t *timep, struct tm *result);
#endif
])
dnl provide reallocarray compat prototype.
dnl $1: unique name for compat code
AC_DEFUN([AHX_CONFIG_REALLOCARRAY],
[
#ifndef HAVE_REALLOCARRAY
#define reallocarray reallocarray$1
void* reallocarray(void *ptr, size_t nmemb, size_t size);
#endif
])
dnl provide w32 compat definition for sleep
AC_DEFUN([AHX_CONFIG_W32_SLEEP],
[
#if !defined(HAVE_SLEEP) || defined(HAVE_WINDOWS_H)
#define sleep(x) Sleep((x)*1000) /* on win32 */
#endif /* HAVE_SLEEP */
])
dnl provide w32 compat definition for usleep
AC_DEFUN([AHX_CONFIG_W32_USLEEP],
[
#ifndef HAVE_USLEEP
#define usleep(x) Sleep((x)/1000 + 1) /* on win32 */
#endif /* HAVE_USLEEP */
])
dnl provide w32 compat definition for random
AC_DEFUN([AHX_CONFIG_W32_RANDOM],
[
#ifndef HAVE_RANDOM
#define random rand /* on win32, for tests only (bad random) */
#endif /* HAVE_RANDOM */
])
dnl provide w32 compat definition for srandom
AC_DEFUN([AHX_CONFIG_W32_SRANDOM],
[
#ifndef HAVE_SRANDOM
#define srandom(x) srand(x) /* on win32, for tests only (bad random) */
#endif /* HAVE_SRANDOM */
])
dnl provide w32 compat definition for FD_SET_T
AC_DEFUN([AHX_CONFIG_W32_FD_SET_T],
[
/* detect if we need to cast to unsigned int for FD_SET to avoid warnings */
#ifdef HAVE_WINSOCK2_H
#define FD_SET_T (u_int)
#else
#define FD_SET_T
#endif
])
dnl Remove an extension flag from CFLAGS, define replacement to be made.
dnl Used by ACX_STRIP_EXT_FLAGS.
dnl $1: the name of the flag, for example -D_GNU_SOURCE.
AC_DEFUN([ACX_CFLAGS_STRIP],
[
if echo $CFLAGS | grep " $1" >/dev/null 2>&1; then
CFLAGS="`echo $CFLAGS | sed -e 's/ $1//g'`"
AC_DEFINE(m4_bpatsubst(OMITTED_$1,[[-=]],_), 1, Put $1 define in config.h)
fi
])
dnl Remove EXT flags from the CFLAGS and set them to be defined in config.h
dnl use with ACX_DETERMINE_EXT_FLAGS.
AC_DEFUN([ACX_STRIP_EXT_FLAGS],
[
AC_MSG_NOTICE([Stripping extension flags...])
ACX_CFLAGS_STRIP(-D_GNU_SOURCE)
ACX_CFLAGS_STRIP(-D_BSD_SOURCE)
ACX_CFLAGS_STRIP(-D_DEFAULT_SOURCE)
ACX_CFLAGS_STRIP(-D__EXTENSIONS__)
ACX_CFLAGS_STRIP(-D_POSIX_C_SOURCE=200112)
ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE=600)
ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE_EXTENDED=1)
ACX_CFLAGS_STRIP(-D_ALL_SOURCE)
ACX_CFLAGS_STRIP(-D_LARGEFILE_SOURCE=1)
]) dnl End of ACX_STRIP_EXT_FLAGS
dnl define one omitted flag for config.h
dnl $1: flag name. -D_GNU_SOURCE
dnl $2: replacement define. _GNU_SOURCE
dnl $3: define value, 1
AC_DEFUN([AHX_CONFIG_FLAG_OMITTED],
[#if defined($1) && !defined($2)
#define $2 $3
[#]endif])
dnl Wrapper for AHX_CONFIG_FLAG_OMITTED for -D style flags
dnl $1: the -DNAME or -DNAME=value string.
AC_DEFUN([AHX_CONFIG_FLAG_EXT],
[AHX_CONFIG_FLAG_OMITTED(m4_bpatsubst(OMITTED_$1,[[-=]],_),m4_bpatsubst(m4_bpatsubst($1,-D,),=.*$,),m4_if(m4_bregexp($1,=),-1,1,m4_bpatsubst($1,^.*=,)))
])
dnl config.h part to define omitted cflags, use with ACX_STRIP_EXT_FLAGS.
AC_DEFUN([AHX_CONFIG_EXT_FLAGS],
[AHX_CONFIG_FLAG_EXT(-D_GNU_SOURCE)
AHX_CONFIG_FLAG_EXT(-D_BSD_SOURCE)
AHX_CONFIG_FLAG_EXT(-D_DEFAULT_SOURCE)
AHX_CONFIG_FLAG_EXT(-D__EXTENSIONS__)
AHX_CONFIG_FLAG_EXT(-D_POSIX_C_SOURCE=200112)
AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE=600)
AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE_EXTENDED=1)
AHX_CONFIG_FLAG_EXT(-D_ALL_SOURCE)
AHX_CONFIG_FLAG_EXT(-D_LARGEFILE_SOURCE=1)
])
dnl check if memcmp is using signed characters and replace if so.
AC_DEFUN([ACX_CHECK_MEMCMP_SIGNED],
[AC_MSG_CHECKING([if memcmp compares unsigned])
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
int main(void)
{
char a = 255, b = 0;
if(memcmp(&a, &b, 1) < 0)
return 1;
return 0;
}
]])], [AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes])
AC_LIBOBJ([memcmp])
], [ AC_MSG_RESULT([cross-compile no])
AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes])
AC_LIBOBJ([memcmp])
]) ])
dnl define memcmp to its replacement, pass unique id for program as arg
AC_DEFUN([AHX_MEMCMP_BROKEN], [
#ifdef MEMCMP_IS_BROKEN
#include "compat/memcmp.h"
#define memcmp memcmp_$1
int memcmp(const void *x, const void *y, size_t n);
#endif
])
dnl ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family
AC_DEFUN([ACX_CHECK_SS_FAMILY],
[AC_CHECK_MEMBER([struct sockaddr_storage.ss_family], [], [
AC_CHECK_MEMBER([struct sockaddr_storage.__ss_family], [
AC_DEFINE([ss_family], [__ss_family], [Fallback member name for socket family in struct sockaddr_storage])
],, [AC_INCLUDES_DEFAULT
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
])
], [AC_INCLUDES_DEFAULT
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
]) ])
dnl Check if CC and linker support -fPIE and -pie.
dnl If so, sets them in CFLAGS / LDFLAGS.
AC_DEFUN([ACX_CHECK_PIE], [
AC_ARG_ENABLE([pie], AS_HELP_STRING([--enable-pie], [Enable Position-Independent Executable (eg. to fully benefit from ASLR, small performance penalty)]))
AS_IF([test "x$enable_pie" = "xyes"], [
AC_MSG_CHECKING([if $CC supports PIE])
BAKLDFLAGS="$LDFLAGS"
BAKCFLAGS="$CFLAGS"
LDFLAGS="$LDFLAGS -pie"
CFLAGS="$CFLAGS -fPIE"
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [
if $CC $CFLAGS $LDFLAGS -o conftest conftest.c 2>&1 | grep "warning: no debug symbols in executable" >/dev/null; then
LDFLAGS="$BAKLDFLAGS"
AC_MSG_RESULT(no)
else
AC_MSG_RESULT(yes)
fi
rm -f conftest conftest.c conftest.o
], [LDFLAGS="$BAKLDFLAGS" ; CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)])
])
])
dnl Check if linker supports -Wl,-z,relro,-z,now.
dnl If so, adds it to LDFLAGS.
AC_DEFUN([ACX_CHECK_RELRO_NOW], [
AC_ARG_ENABLE([relro_now], AS_HELP_STRING([--enable-relro-now], [Enable full relocation binding at load-time (RELRO NOW, to protect GOT and .dtor areas)]))
AS_IF([test "x$enable_relro_now" = "xyes"], [
AC_MSG_CHECKING([if $CC supports -Wl,-z,relro,-z,now])
BAKLDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -Wl,-z,relro,-z,now"
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [
if $CC $CFLAGS $LDFLAGS -o conftest conftest.c 2>&1 | grep "warning: no debug symbols in executable" >/dev/null; then
LDFLAGS="$BAKLDFLAGS"
AC_MSG_RESULT(no)
else
AC_MSG_RESULT(yes)
fi
rm -f conftest conftest.c conftest.o
], [LDFLAGS="$BAKLDFLAGS" ; AC_MSG_RESULT(no)])
])
])
dnl End of file
|