Codebase list isc-kea / lintian-fixes/main configure.ac
lintian-fixes/main

Tree @lintian-fixes/main (Download .tar.gz)

configure.ac @lintian-fixes/mainraw · history · blame

   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
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_PREREQ([2.69])

# For released versions, this is in x.y.z format.
# For GIT versions, this is x.y.z-git, where x.y.z denotes the software
# version that was used as a base + changes that were made later, but
# are not released yet.
AC_INIT(kea,1.5.0, kea-dev@lists.isc.org)
AC_CONFIG_SRCDIR(README)

# serial-tests is not available in automake version before 1.13, so
# we'll check that and conditionally use serial-tests. This check is
# adopted from code by Richard W.M. Jones:
# https://www.redhat.com/archives/libguestfs/2013-February/msg00102.html
m4_define([serial_tests], [
    m4_esyscmd([automake --version |
                head -1 |
                awk '{split ($NF,a,"."); if (a[1] == 1 && a[2] >= 12) { print "serial-tests" }}'
    ])
])
AM_INIT_AUTOMAKE(foreign serial_tests)

m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])dnl be backward compatible
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_MACRO_DIR([m4macros])

AC_CANONICAL_HOST
AC_CANONICAL_BUILD

# Checks for programs.
AC_PROG_CXX

# Check for exact Kea version.
AC_MSG_CHECKING(whether this is a tarball or git source)
if test -d "${srcdir}/.git"; then
        KEA_SRCID="git `(cd "${top_srcdir}";git rev-parse HEAD)`"
        AC_MSG_RESULT("git")
else
        KEA_SRCID="tarball"
        AC_MSG_RESULT("tarball")
fi
# Export EXTENDED_VERSION to config.h
# This will be either "tarball" or "git abcd".
# We do not want to put this in a config.h, because it messes up ccache
# horribly. When building different branches, the commit-id is different
# and since the config.h is included in most files *and* has a different
# content, ccache can't use cached content and thus has to do full compilation.
# Now it is in kea_version.h and config.status substitutes it.
AC_SUBST(KEA_SRCID)

# Find a separator for path_replacer
for sep in "+" "," ";" "&" "__NONE__"; do
        if `pwd | grep -q $sep`; then continue; fi
        if `echo ${prefix} | grep -q $sep`; then continue; fi
        if `echo ${sysconfdir} | grep -q $sep`; then continue; fi
        if `echo ${localstatedir} | grep -q $sep`; then continue; fi
        SEP=$sep
        break
done
if test "$sep" = "__NONE__"; then
        AC_MSG_ERROR([can't find a separator character in '+,;&' for the path_replacer shell script])
fi
AC_SUBST(SEP)

# If cross compiling assume the message compiler executable was
# magically already in place...
if test "$cross_compiling" = "yes"; then
        AC_MSG_CHECKING("build (vs. host) compiled message compiler")
	if test -x "${srcdir}/src/lib/log/compiler/message"; then
		AC_MSG_RESULT(yes)
	else
		AC_MSG_RESULT(no)
		AC_MSG_WARN("you must install a message compiler in:")
		AC_MSG_WARN("    ${srcdir}/src/lib/log/compiler/message")
		AC_MSG_WARN("compiled for build ($build).")
	fi
fi
AM_CONDITIONAL([CROSS_COMPILING], [test "$cross_compiling" = "yes"])

# pkg-config can be required.
AC_PATH_PROG([PKG_CONFIG], [pkg-config])

# Enable low-performing debugging facilities? This option optionally
# enables some debugging aids that perform slowly and hence aren't built
# by default.
AC_ARG_ENABLE([debug],
  AS_HELP_STRING([--enable-debug],
    [enable debugging (default is no)]),
  [case "${enableval}" in
    yes) debug_enabled=yes ;;
    no)  debug_enabled=no ;;
    *)   AC_MSG_ERROR([bad value ${enableval} for --enable-debug]) ;;
  esac],[debug_enabled=no])
AM_CONDITIONAL([DEBUG_ENABLED], [test x$debug_enabled = xyes])
AM_COND_IF([DEBUG_ENABLED], [AC_DEFINE([ENABLE_DEBUG], [1], [Enable low-performing debugging facilities?])])

# Include premium configuration
INCLUDED_HOOKS=

PREMIUM_DIR=
DISTCHECK_PREMIUM_CONFIGURE_FLAG=
AC_DEFUN([AX_PREMIUM],[])
# m4_sinclude includes the file if it exists at autoreconf time
m4_sinclude(premium/config.m4)
AC_SUBST(PREMIUM_DIR)
AC_SUBST(DISTCHECK_PREMIUM_CONFIGURE_FLAG)
AX_PREMIUM

# Include contrib configuration
# (currently only a provision copied from premium support)
CONTRIB_DIR=
DISTCHECK_CONTRIB_CONFIGURE_FLAG=
AC_DEFUN([AX_CONTRIB],[])
m4_sinclude(contrib/config.m4)
AC_SUBST(CONTRIB_DIR)
AC_SUBST(DISTCHECK_CONTRIB_CONFIGURE_FLAG)
AX_CONTRIB

# Libtool configuration
#

# libtool cannot handle spaces in paths, so exit early if there is one
if [ test `echo $PWD | grep -c ' '` != "0"  ]; then
    AC_MSG_ERROR([Kea cannot be built in a directory that contains spaces, because of libtool limitations. Please change the directory name, or use a symbolic link that does not contain spaces.])
fi

# On FreeBSD (and probably some others), clang++ does not meet an autoconf
# assumption in identifying libtool configuration regarding shared library:
# the configure script will execute "$CC -shared $CFLAGS/$CXXFLAGS -v" and
# expect the output contains -Lxxx or -Ryyy.  This is the case for g++, but
# not for clang++, and, as a result, it will cause various errors in linking
# programs or running them with a shared object (such as some of our python
# scripts).
# To work around this problem we define a temporary variable
# "CXX_LIBTOOL_LDFLAGS".  It's expected to be defined as, e.g, "-L/usr/lib"
# to temporarily fake the output so that it will be compatible with that of
# g++.
CFLAGS_SAVED=$CFLAGS
CXXFLAGS_SAVED=$CXXFLAGS
CFLAGS="$CFLAGS $CXX_LIBTOOL_LDFLAGS"
CXXFLAGS="$CXXFLAGS $CXX_LIBTOOL_LDFLAGS"
LT_INIT
CFLAGS=$CFLAGS_SAVED
CXXFLAGS=$CXXFLAGS_SAVED

# Use C++ language
AC_LANG([C++])

# Identify the compiler: this check must be after AC_PROG_CXX and AC_LANG.
AM_CONDITIONAL(USE_GXX, test "X${GXX}" = "Xyes")
AC_CHECK_DECL([__SUNPRO_CC], [SUNCXX="yes"], [SUNCXX="no"])
AC_CHECK_DECL([__clang__], [CLANGPP="yes"], [CLANGPP="no"])
# USE_CLANGPP is no longer used, keep it by symmetry with USE_GXX?
AM_CONDITIONAL(USE_CLANGPP, test "X${CLANGPP}" = "Xyes")

# Check for C++11 features support
AX_ISC_CPP11

# Check for std::is_base_of support
AC_MSG_CHECKING([for std::is_base_of])
AC_COMPILE_IFELSE(
    [AC_LANG_PROGRAM(
        [#include <type_traits>
        class A {};
        class B : A {};]
        [static_assert(std::is_base_of<A, B>::value, "");])],
    [AC_MSG_RESULT(yes)
    AC_DEFINE([HAVE_IS_BASE_OF], [1],
    [Define to 1 if std::is_base_of is available])],
    [AC_MSG_RESULT(no)])

dnl Determine if we are using GNU sed
GNU_SED=no
$SED --version 2> /dev/null | grep GNU > /dev/null 2>&1
if test $? -eq 0; then
  GNU_SED=yes
fi

# Display the C++ version
AC_MSG_CHECKING([C++ version])
cat > conftest.cpp << EOF
long v = __cplusplus;
EOF
CXX_STANDARD=`$CXX $CXXFLAGS -E -o - conftest.cpp | grep '^long v = ' | $SED -e 's/^long v = //' -e 's/[[^0-9]]*$//' 2> /dev/null`
if test -z "$CXX_STANDARD"; then
        CXX_STANDARD="unknown"
fi
AC_MSG_RESULT([$CXX_STANDARD])

# Linker options

# check -R, "-Wl,-R" or -rpath
AX_ISC_RPATH

# Compiler dependent settings: define some mandatory CXXFLAGS here.
# We also use a separate variable KEA_CXXFLAGS.  This will (and should) be
# used as the default value for each specific AM_CXXFLAGS:
# AM_CXXFLAGS = $(KEA_CXXFLAGS)
# AM_CXXFLAGS += ... # add module specific flags
# We need this so that we can disable some specific compiler warnings per
# module basis; since AM_CXXFLAGS are placed before CXXFLAGS, and since
# gcc's -Wno-XXX option must be specified after -Wall or -Wextra, we cannot
# specify the default warning flags in CXXFLAGS and let specific modules
# "override" the default.

# This may be used to try linker flags.
AC_DEFUN([KEA_CXX_TRY_FLAG], [
  AC_MSG_CHECKING([whether $CXX supports $1])

  kea_save_CXXFLAGS="$CXXFLAGS"
  CXXFLAGS="$CXXFLAGS -Werror $1"

  AC_LINK_IFELSE([AC_LANG_SOURCE([int main(){ return 0;}])],
                 [kea_cxx_flag=yes], [kea_cxx_flag=no])
  CXXFLAGS="$kea_save_CXXFLAGS"

  if test "x$kea_cxx_flag" = "xyes"; then
    ifelse([$2], , :, [$2])
  else
    ifelse([$3], , :, [$3])
  fi

  AC_MSG_RESULT([$kea_cxx_flag])
])

CXX_VERSION="unknown"

# SunStudio compiler requires special compiler options for boost
# (http://blogs.sun.com/sga/entry/boost_mini_howto)
if test "$SUNCXX" = "yes"; then
CXX_VERSION=`$CXX -V 2> /dev/null | head -1`
CXXFLAGS="$CXXFLAGS -library=stlport4 -features=tmplife -features=tmplrefstatic"
KEA_CXXFLAGS="$KEA_CXXFLAGS -mt"
MULTITHREADING_FLAG="-mt"
fi

# Newer versions of clang++ promotes "unused driver arguments" warnings to
# a fatal error with -Werror, causing build failure.  Since we use multiple
# compilers on multiple systems, this can easily happen due to settings for
# non clang++ environments that could be just ignored otherwise.  It can also
# happen if clang++ is used via ccache.  So, although probably suboptimal,
# we suppress this particular warning.  Note that it doesn't weaken checks
# on the source code.
if test "X$CLANGPP" = "Xyes"; then
CXX_VERSION=`$CXX --version 2> /dev/null | head -1`
KEA_CXXFLAGS="$KEA_CXXFLAGS -Qunused-arguments"
fi

# gcc/clang specific settings:
if test "X$GXX" = "Xyes"; then
CXX_VERSION=`$CXX --version 2> /dev/null | head -1`
KEA_CXXFLAGS="$KEA_CXXFLAGS -Wall -Wextra -Wnon-virtual-dtor -Wwrite-strings -Woverloaded-virtual -Wno-sign-compare"
# gcc 4.4 would emit warnings about breaking strict aliasing rules.
# See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=41874
CXX_DUMP_VERSION=`$CXX -dumpversion | cut -f1-2 -d.`
if expr "$CXX_DUMP_VERSION" \< "4.5" > /dev/null; then
       WARNING_GCC_44_STRICT_ALIASING_CFLAG="-fno-strict-aliasing"
fi
AC_SUBST(WARNING_GCC_44_STRICT_ALIASING_CFLAG)
CPPP="$CPP"
# gcc 5 preprocessor requires -P for checking its output
if expr "$CXX_DUMP_VERSION" \> "5" > /dev/null; then
       CPPP="$CPP -P"
fi

case "$host" in
*-solaris*)
        MULTITHREADING_FLAG=-pthreads
        # In Solaris, IN6ADDR_ANY_INIT and IN6ADDR_LOOPBACK_INIT need -Wno-missing-braces
        KEA_CXXFLAGS="$KEA_CXXFLAGS -Wno-missing-braces"
        ;;
*-apple-darwin*)
        MULTITHREADING_FLAG=
        ;;
*)
        MULTITHREADING_FLAG=-pthread
        ;;
esac
KEA_CXXFLAGS="$KEA_CXXFLAGS $MULTITHREADING_FLAG"

# Disable -Werror by default. Only use it if specifically enabled.
# The usage of this flag is:
#
# No flag:            -Werror is disabled
# --with-werror:      -Werror is enabled
# --with-werror=yes:  -Werror is enabled
# --with-werror=no:   -Werror is disabled
# --with-werror=value -Werror is enabled and "value" is included in the compiler flags
#
# In the last case, "value" may be one or more compiler flags, e.g.

# --with-werror=-Wundef
# --with-werror='-Wundef -Wconversion'

werror_extras=
AC_ARG_WITH(werror,
    AC_HELP_STRING([--with-werror], [Compile using -Werror (default=no)]),
    [
     case "${withval}" in
         yes) with_werror=1 ;;
         no)  with_werror=0 ;;
         -*)  with_werror=1; werror_extras=${withval} ;;
         *)   AC_MSG_ERROR(bad value ${withval} for --with-werror) ;;
     esac],
     [with_werror=0])

werror_ok=0

# Certain versions of gcc (g++) have a bug that incorrectly warns about
# the use of anonymous name spaces even if they're closed in a single
# translation unit.  For these versions we have to disable -Werror.
if test $with_werror = 1; then
   CXXFLAGS_SAVED="$CXXFLAGS"
   CXXFLAGS="$CXXFLAGS $KEA_CXXFLAGS -Werror"
   AC_MSG_CHECKING(for in-TU anonymous namespace breakage)
   # We use struct, not class, here, because some compilers complain about
   # "unused private members", causing a false positive.
   AC_TRY_COMPILE([namespace { struct Foo {}; }
   namespace isc {struct Bar {Foo foo_;};} ],,
        [AC_MSG_RESULT(no)
         werror_ok=1
         KEA_CXXFLAGS="$KEA_CXXFLAGS -Werror"],
        [AC_MSG_RESULT(yes)])
   CXXFLAGS="$CXXFLAGS_SAVED"
fi

# Added flags after -Werror

# Some versions of GCC warn about some versions of Boost regarding
# missing initializer for members in its posix_time.
# https://svn.boost.org/trac/boost/ticket/3477
# But older GCC compilers don't have the flag.
KEA_CXX_TRY_FLAG([-Wno-missing-field-initializers],
        [KEA_CXXFLAGS="$KEA_CXXFLAGS -Wno-missing-field-initializers"])

if test "X$CLANGPP" = "Xyes"; then
        # This is to workaround unused variables tcout and tcerr in
        # log4cplus's streams.h and unused parameters from some of the
        # Boost headers.
        KEA_CXXFLAGS="$KEA_CXXFLAGS -Wno-unused-variable -Wno-unused-parameter"
fi

# Add the extras at the very last
# Note it can be used to re-enable a (fatal) warning
for extra in $werror_extras; do
        KEA_CXX_TRY_FLAG([$extra],
                [KEA_CXXFLAGS="$KEA_CXXFLAGS $extra"],
                [AC_MSG_ERROR([$CXX does not support $extra"])])
done

fi                              dnl GXX = yes

# allow building programs with static link.  we need to make it selective
# because loadable modules cannot be statically linked.
AC_ARG_ENABLE([static-link],
AC_HELP_STRING([--enable-static-link],
  [build programs with static link [[default=no]]]),
  [enable_static_link=yes], [enable_static_link=no])
AM_CONDITIONAL(USE_STATIC_LINK, test $enable_static_link = yes)
AM_COND_IF([USE_STATIC_LINK], [AC_DEFINE([USE_STATIC_LINK], [1], [Was Kea statically linked?])])

# Check validity about some libtool options
if test $enable_static_link = yes -a $enable_static = no; then
        AC_MSG_ERROR([--enable-static-link requires --enable-static])
fi
if test $enable_static_link = no -a $enable_shared = no; then
        AC_MSG_ERROR([--disable-static-link requires --enable-shared])
fi

# OS dependent configuration
kea_undefined_pthread_behavior=no

case "$host" in
*-solaris*)
        # Solaris requires special definitions to get some standard libraries
        # (e.g. getopt(3)) available with common used header files.
        CPPFLAGS="$CPPFLAGS -D_XPG4_2 -D__EXTENSIONS__"
        # "now" binding is necessary to prevent deadlocks in C++ static initialization code
        LDFLAGS="$LDFLAGS -z now"
        # Destroying locked mutexes, condition variables being waited
        # on, etc. are undefined behavior on Solaris, so we set it as
        # such here.
        kea_undefined_pthread_behavior=yes
        ;;
*-apple-darwin*)
        # Starting with OSX 10.7 (Lion) we must choose which IPv6 API to use
        # (RFC2292 or RFC3542).
        CPPFLAGS="$CPPFLAGS -D__APPLE_USE_RFC_3542"

        # In OS X 10.9 (and possibly any future versions?) pthread_cond_destroy
        # doesn't work as documented, which makes some of unit tests fail.
        AC_MSG_CHECKING([OS X versions where destroying locked locks do not fail])
        AC_TRY_COMPILE(
        [#include <Availability.h>],
        [#ifdef __MAC_OS_X_VERSION_MIN_REQUIRED
         #if __MAC_OS_X_VERSION_MIN_REQUIRED >= 1090
         #error " OS X >= 10.9"
         #endif
         #endif
         return 1;],
        [AC_MSG_RESULT([OS X < 10.9])],
        [AC_MSG_RESULT([OS X >= 10.9])
         kea_undefined_pthread_behavior=yes])
        ;;
*-freebsd*)
        # On FreeBSD10.1 pthread_cond_destroy doesn't work as documented, which
        # causes the CondVarTest.destroyWhileWait test to fail. According to the
        # pthread_cond_destroy documentation for FreeBSD, this function should
        # return EBUSY error when there is a thread waiting for the conditional
        # variable, whereas this function returned success code. We treat it here
        # as an undefined behavior. Also note that this issue was only visible
        # when gtest 1.7 was in use, because the previous versions of gtest
        # didn't seem to have support for the death tests on FreeBSD. As a
        # result, the test was not executed and the error didn't occur.
        kea_undefined_pthread_behavior=yes
        ;;
esac
if [ test $kea_undefined_pthread_behavior = "yes" ]; then
   AC_DEFINE([HAS_UNDEFINED_PTHREAD_BEHAVIOR], [1], [Does this platform have some undefined pthreads behavior?])
fi

# Our experiments have shown Solaris 10 has broken support for the
# IPV6_USE_MIN_MTU socket option for getsockopt(); it doesn't return the value
# previously set via setsockopt().  We know it doesn't happen on one instance
# on Solaris 11, but we don't know whether it happens for any Solaris 10
# implementations or for earlier versions of Solaris.  In any case, at the
# moment this matters for only one unittest case, so we'll simply disable
# the affected test using the following definition with the specific hardcoding
# of that version of Solaris.
case "$host" in
*-solaris2.10)
        AC_DEFINE([HAVE_BROKEN_GET_IPV6_USE_MIN_MTU], [1],
        [Define to 1 if getsockopt(IPV6_USE_MIN_MTU) does not work])
        ;;
esac

# Kea-shell is written in python. It can work with python 2.7 or any 3.x.
# It may likely work with earlier versions, but 2.7 was the oldest one we tested
# it with. We require python only if kea-shell was enabled. It is disabled
# by default to not introduce hard dependency on python.
AC_ARG_ENABLE(shell, [AC_HELP_STRING([--enable-shell],
  [enable kea-shell, a text management client for Control Agent [default=no]])],
  enable_shell=$enableval, enable_shell=no)

DISTCHECK_KEA_SHELL_CONFIGURE_FLAG=
PKGPYTHONDIR=
m4_define_default([_AM_PYTHON_INTERPRETER_LIST],
 [python3 python3.9 python3.8 python3.7 python3.6 python3.5 python3.4 dnl
  python3.3 python3.2 python3.1 python3.0 python python2 python2.7])
if test "x$enable_shell" != xno ; then
# If kea-shell is enabled, we really need python. 2.7 or anything newer will do.
# We try to find 3.x first. If not found, we can do with 2.7.
  AM_PATH_PYTHON([2.7])
  # pkgpythondir needs to be expanded
  saved_prefix="$prefix"
  if test "$prefix" = "NONE"; then
    prefix=$ac_default_prefix
  fi
  PKGPYTHONDIR="$pkgpythondir"
  OLD=
  while test "x$OLD" != "x$PKGPYTHONDIR"; do
    OLD="$PKGPYTHONDIR"
    eval PKGPYTHONDIR="\"$OLD\""
  done
  prefix="$saved_prefix"
  DISTCHECK_KEA_SHELL_CONFIGURE_FLAG="--enable-shell"
else
  PYTHON=no
fi

# Export to makefiles the info whether we have shell enabled or not
AM_CONDITIONAL(KEA_SHELL, test x$enable_shell != xno)
AC_SUBST(DISTCHECK_KEA_SHELL_CONFIGURE_FLAG)
AC_SUBST(PKGPYTHONDIR)

# produce PIC unless we disable shared libraries. need this for python bindings.
if test $enable_shared != "no" -a "X$GXX" = "Xyes"; then
   KEA_CXXFLAGS="$KEA_CXXFLAGS -fPIC"
fi

# Look for glib static libs if they're trying to do static builds
if test $enable_static_link != "no"; then
   CXX_SAVED=$CXX
   CXX="$CXX -static"

   AC_LINK_IFELSE(
     [AC_LANG_PROGRAM([#include <math.h>],[(void)sqrt(-1.0);])],
     [AC_MSG_RESULT([checking for static glib libraries... yes])],
     [AC_MSG_RESULT([checking for static glib libraries... no])
      AC_MSG_ERROR([Building with --enable-static-link does not work. You appear to be missing glib static libraries. Check config.log for details.])])

   CXX=$CXX_SAVED
fi

AC_SUBST(KEA_CXXFLAGS)

# Checks for libraries.

AC_SEARCH_LIBS(inet_pton, [nsl])
AC_SEARCH_LIBS(recvfrom, [socket])
AC_SEARCH_LIBS(nanosleep, [rt])
AC_SEARCH_LIBS(dlsym, [dl])

# Checks for header files.

# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
AC_TYPE_SIZE_T


# Detect OS type (it may be used to do OS-specific things, e.g.
# interface detection in DHCP)
AC_MSG_CHECKING(OS type)
BSD_TYPE="notaBSD"
case $host in
    *-linux*)
      AC_DEFINE([OS_LINUX], [1], [Running on Linux?])
      OS_TYPE="Linux"
      CPPFLAGS="$CPPFLAGS -DOS_LINUX"
      ;;
    *-apple-darwin*)
      AC_DEFINE([OS_BSD], [1], [Running on BSD?])
      AC_DEFINE([OS_OSX], [1], [Running on OSX?])
      OS_TYPE="BSD"
      BSD_TYPE="OSX"
      CPPFLAGS="$CPPFLAGS -DOS_BSD"
      ;;
    *-freebsd*)
      AC_DEFINE([OS_BSD], [1], [Running on BSD?])
      AC_DEFINE([OS_FREEBSD], [1], [Running on FreeBSD?])
      OS_TYPE="BSD"
      BSD_TYPE="FreeBSD"
      CPPFLAGS="$CPPFLAGS -DOS_BSD"
      ;;
    *-netbsd*)
      AC_DEFINE([OS_BSD], [1], [Running on BSD?])
      AC_DEFINE([OS_NETBSD], [1], [Running on NetBSD?])
      OS_TYPE="BSD"
      BSD_TYPE="NetBSD"
      CPPFLAGS="$CPPFLAGS -DOS_BSD"
      ;;
    *-openbsd*)
      AC_DEFINE([OS_BSD], [1], [Running on BSD?])
      AC_DEFINE([OS_OPENBSD], [1], [Running on OpenBSD?])
      OS_TYPE="BSD"
      BSD_TYPE="OpenBSD"
      CPPFLAGS="$CPPFLAGS -DOS_BSD"
      ;;
    *-solaris*)
      AC_DEFINE([OS_SOLARIS], [1], [Running on Solaris?])
      OS_TYPE="Solaris"
      CPPFLAGS="$CPPFLAGS -DOS_SUN"
      ;;
    *)
      OS_TYPE="Unknown"
      # $host_os is more user friendly than full $host
      AC_MSG_WARN("Unsupported OS: $host_os")
      ;;
esac
AC_MSG_RESULT($OS_TYPE)

AM_CONDITIONAL(OS_LINUX, test $OS_TYPE = Linux)
AM_CONDITIONAL(OS_BSD, test $OS_TYPE = BSD)
AM_CONDITIONAL(OS_SOLARIS, test $OS_TYPE = Solaris)
AM_CONDITIONAL(OS_OSX, test $BSD_TYPE = OSX)
AM_CONDITIONAL(OS_FREEBSD, test $BSD_TYPE = FreeBSD)
AM_CONDITIONAL(OS_NETBSD, test $BSD_TYPE = NetBSD)
AM_CONDITIONAL(OS_OPENBSD, test $BSD_TYPE = OpenBSD)


AC_MSG_CHECKING(for sa_len in struct sockaddr)
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>],
[struct sockaddr sa; sa.sa_len = 0; return (0);],
        [AC_MSG_RESULT(yes)
        AC_DEFINE(HAVE_SA_LEN, 1, [Define to 1 if sockaddr has a sa_len member, and corresponding sin_len and sun_len])],
        AC_MSG_RESULT(no))

AC_MSG_CHECKING(for usuable C++11 regex)
AC_TRY_RUN([
#include <regex>
#include <iostream>
int main() {
  const std::regex regex(".*");
  const std::string string = "This should match!";
  const auto result = std::regex_search(string, regex);
  return result ? EXIT_SUCCESS : EXIT_FAILURE;
}],
        [AC_MSG_RESULT(yes)
        AC_DEFINE(USE_REGEX, 1, [Define to 1 if C++11 regex is usable])],
        AC_MSG_RESULT(no))

enable_gtest="no"
GTEST_INCLUDES=

AC_ARG_WITH([gtest-source],
            [AS_HELP_STRING([--with-gtest-source=PATH],
                            [location of the Googletest source])],
            [enable_gtest="yes" ; GTEST_SOURCE="$withval"])

AC_ARG_WITH([gtest],
            [AS_HELP_STRING([--with-gtest=PATH],
                            [specify a path to gtest header files (PATH/include) and library (PATH/lib)])],
        [gtest_path="$withval"; enable_gtest="yes"], [gtest_path="no"])

AC_ARG_WITH(lcov,
[  --with-lcov[=PROGRAM]         enable gtest and coverage target using the specified lcov], lcov="$withval", lcov="no")

USE_LCOV="no"
if test "$lcov" != "no"; then
        # force gtest if not set
        if test "$enable_gtest" = "no"; then
#               AC_MSG_ERROR("lcov needs gtest for test coverage report")
                AC_MSG_NOTICE([gtest support is now enabled, because used by coverage tests])
                enable_gtest="yes"
        fi
        if test "$lcov" != "yes"; then
                LCOV=$lcov
        else
                AC_PATH_PROG([LCOV], [lcov])
        fi
        if test -x "${LCOV}"; then
                USE_LCOV="yes"
        else
                AC_MSG_ERROR([Cannot find lcov.])
        fi
        # is genhtml always in the same directory?
        GENHTML=`echo "$LCOV" | ${SED} s/lcov$/genhtml/`
        if test ! -x $GENHTML; then
                AC_MSG_ERROR([genhtml not found, needed for lcov])
        fi
        # GCC specific?
        CXXFLAGS="$CXXFLAGS -fprofile-arcs -ftest-coverage"
        LIBS=" $LIBS -lgcov"
        AC_SUBST(CPPFLAGS)
        AC_SUBST(LIBS)
        AC_SUBST(LCOV)
        AC_SUBST(GENHTML)
fi
AC_SUBST(USE_LCOV)

enable_benchmark="no"
BENCHMARK_INCLUDES=

AC_ARG_WITH([benchmark-source],
            [AS_HELP_STRING([--with-benchmark-source=PATH],
                            [location of the benchmark source])],
            [enable_benchmark="yes" ; BENCHMARK_SOURCE="$withval"])

AC_ARG_WITH([benchmark],
            [AS_HELP_STRING([--with-benchmark=PATH],
                            [specify a path to benchmark header files (PATH/include) and library (PATH/lib)])],
        [benchmark_path="$withval"; enable_benchmark="yes"], [benchmark_path="no"])

# Sets up for use of botan unless openssl is specified
# sets variables CRYPTO_*
AX_CRYPTO

# List of directories, where tools like mysql_config or pgsql_config will be
# searched for
defaultdirs="/usr /usr/local /usr/pkg /opt /opt/local"

# Check for MySql.  The path to the mysql_config program is given with
# the --with-mysql-config (default to /usr/bin/mysql-config).  By default,
# the software is not built with MySQL support enabled.
mysql_config="no"
AC_ARG_WITH([mysql],
  AC_HELP_STRING([--with-mysql=PATH],
    [path to the MySQL 'mysql_config' script (MySQL is used for the DHCP database)]),
    [mysql_config="$withval"])

deprec_msg="no"
AC_ARG_WITH([dhcp-mysql],,
    [mysql_config="$withval";deprec_msg="yes"])

if test "${deprec_msg}" = "yes" ; then
    AC_MSG_WARN([--with-dhcp-mysql has been deprecated, please use --with-mysql])
fi

if test "${mysql_config}" = "yes" ; then
    for d in $defaultdirs
    do
        if test -f $d/bin/mysql_config; then
            MYSQL_CONFIG="$d/bin/mysql_config"
            break
        fi
    done
elif test "${mysql_config}" != "no" ; then
    MYSQL_CONFIG="${withval}"
fi

if test "$MYSQL_CONFIG" != "" ; then
    if test -d "$MYSQL_CONFIG" -o ! -x "$MYSQL_CONFIG" ; then
        AC_MSG_ERROR([--with-mysql should point to a mysql_config program])
    fi

    MYSQL_CPPFLAGS=`$MYSQL_CONFIG --cflags`
    MYSQL_LIBS=`$MYSQL_CONFIG --libs`
    MYSQL_VERSION=`$MYSQL_CONFIG --version`

    AC_SUBST(MYSQL_CPPFLAGS)
    AC_SUBST(MYSQL_LIBS)

    # Check that a simple program using MySQL functions can compile and link.
    CPPFLAGS_SAVED="$CPPFLAGS"
    LIBS_SAVED="$LIBS"

    CPPFLAGS="$MYSQL_CPPFLAGS $CPPFLAGS"
    LIBS="$MYSQL_LIBS $LIBS"

    AC_LINK_IFELSE(
            [AC_LANG_PROGRAM([#include <mysql.h>],
                             [MYSQL mysql_handle;
                              (void) mysql_init(&mysql_handle);
                             ])],
            [AC_MSG_RESULT([checking for MySQL headers and library... yes])],
            [AC_MSG_RESULT([checking for MySQL headers and library... no])
             AC_MSG_ERROR([Needs MySQL library])]
    )

    CPPFLAGS=$CPPFLAGS_SAVED
    LIBS=$LIBS_SAVED

    # Note that MYSQL is present in the config.h file
    AC_DEFINE([HAVE_MYSQL], [1], [MySQL is present])
fi

# Solaris puts FIONREAD in filio.h
AC_CHECK_HEADERS(sys/filio.h,,,)

# ... and at the shell level, so Makefile.am can take action depending on this.
AM_CONDITIONAL(HAVE_MYSQL, test "$MYSQL_CONFIG" != "")

pg_config="no"
AC_ARG_WITH([pgsql],
  AC_HELP_STRING([--with-pgsql=PATH],
    [path to the PostgreSQL 'pg_config' script]),
    [pg_config="$withval"])

deprec_msg="no"
AC_ARG_WITH([dhcp-pgsql],,
    [pg_config="$withval";deprec_msg="yes"])

if test "${deprec_msg}" = "yes" ; then
    AC_MSG_WARN([--with-dhcp-pgsql has been deprecated, please use --with-pgsql])
fi

if test "${pg_config}" = "yes" ; then
    for d in $defaultdirs
    do
        if test -f $d/bin/pg_config; then
            PG_CONFIG="$d/bin/pg_config"
            break
        fi
    done
elif test "${pg_config}" != "no" ; then
    PG_CONFIG="${withval}"
fi

if test "$PG_CONFIG" != "" ; then
    if test -d "$PG_CONFIG" -o ! -x "$PG_CONFIG" ; then
        AC_MSG_ERROR([--with-pgsql should point to a pg_config program])
    fi

    PGSQL_CPPFLAGS=`$PG_CONFIG --cppflags`
    PGSQL_INCLUDEDIR=`$PG_CONFIG --includedir`
    PGSQL_INCLUDEDIR_SERVER=`$PG_CONFIG --includedir-server`
    PGSQL_CPPFLAGS="$PGSQL_CPPFLAGS -I$PGSQL_INCLUDEDIR -I$PGSQL_INCLUDEDIR_SERVER"
    PGSQL_LIBS=`$PG_CONFIG --libdir`
    PGSQL_LIBS="-L$PGSQL_LIBS -lpq"
    PGSQL_VERSION=`$PG_CONFIG --version`

    AC_SUBST(PGSQL_CPPFLAGS)
    AC_SUBST(PGSQL_LIBS)

    # Check that a simple program using PostgreSQL functions can compile and link.
    CPPFLAGS_SAVED="$CPPFLAGS"
    LIBS_SAVED="$LIBS"

    CPPFLAGS="$PGSQL_CPPFLAGS $CPPFLAGS"
    LIBS="$PGSQL_LIBS $LIBS"

    AC_LINK_IFELSE(
            [AC_LANG_PROGRAM([#include <libpq-fe.h>],
                             [PGconn * c = PQconnectdb("dbname = 'postgres'");
                              PQfinish(c);])],
            [AC_MSG_RESULT([checking for PostgreSQL headers and library... yes])],
            [AC_MSG_RESULT([checking for PostgreSQL headers and library... no])
             AC_MSG_ERROR([Needs PostgreSQL library])]
    )

    AC_CHECK_HEADERS([utils/errcodes.h],,
    AC_MSG_ERROR([Missing required header file (errcodes.h) from PostgreSQL server-development package]))

    CPPFLAGS=$CPPFLAGS_SAVED
    LIBS=$LIBS_SAVED

    # Note that PostgreSQL is present in the config.h file
    AC_DEFINE([HAVE_PGSQL], [1], [PostgreSQL is present])
fi

# ... and at the shell level, so Makefile.am can take action depending on this.
AM_CONDITIONAL(HAVE_PGSQL, test "$PG_CONFIG" != "")

# allow building kea programs with static link to cassandra cpp-driver.
AC_ARG_ENABLE([cql-static-lib],
AS_HELP_STRING([--enable-cql-static-lib],
    [build programs with cassandra cpp driver static library [[default=no]]]),
    [enable_cql_static_lib=yes], [enable_cql_static_lib=no])
AM_CONDITIONAL(USE_CQL_STATIC_LIB, test "$enable_cql_static_lib" = yes)
#AC_DEFINE USE_CQL_STATIC_LIB? (unused)

cql_lib="cassandra"
if test "${enable_cql_static_lib}" = "yes" ; then
    cql_lib="${cql_lib}_static"
fi

cql_config="no"
AC_ARG_WITH([cql],
  AC_HELP_STRING([--with-cql=PATH],
    [path to pkg-config or the Cassandra CQL 'cql_config' script]),
    [cql_config="$withval"])

if test "${cql_config}" = "yes" ; then
    CQL_CONFIG="$PKG_CONFIG"
elif test "${cql_config}" != "no" ; then
    CQL_CONFIG="${cql_config}"
fi

if test "$CQL_CONFIG" != "" ; then
    if test -d "$CQL_CONFIG" -o ! -x "$CQL_CONFIG" ; then
        AC_MSG_ERROR([--with-cql should point to a pkg-config or cql_config program])
    fi

    CQL_INCLUDEDIR=`$CQL_CONFIG --cflags-only-I $cql_lib`
    CQL_CPPFLAGS="$CQL_INCLUDEDIR `$CQL_CONFIG --cflags-only-other $cql_lib`"
    CQL_LIBS="`$CQL_CONFIG --libs $cql_lib`"
    CQL_VERSION=`$CQL_CONFIG --modversion $cql_lib`

    AC_SUBST(CQL_CPPFLAGS)
    AC_SUBST(CQL_LIBS)

    # Check that a simple program using CQL functions can compile and link.
    CPPFLAGS_SAVED="$CPPFLAGS"
    LIBS_SAVED="$LIBS"

    CPPFLAGS="$CQL_CPPFLAGS $CPPFLAGS"
    LIBS="$CQL_LIBS $LIBS"

    AC_LINK_IFELSE(
            [AC_LANG_PROGRAM([#include <cassandra.h>],
                             [CassCluster* cluster = cass_cluster_new();
                              cass_cluster_free(cluster);])],
            [AC_MSG_RESULT([checking for Cassandra CQL headers and library... yes])],
            [AC_MSG_RESULT([checking for Cassandra CQL headers and library... no])
             AC_MSG_ERROR([Needs Cassandra CQL library])]
    )
    CPPFLAGS=$CPPFLAGS_SAVED
    LIBS=$LIBS_SAVED

    # Note that CQL is present in the config.h file
    AC_DEFINE([HAVE_CQL], [1], [CQL is present])
fi

# ... and at the shell level, so Makefile.am can take action depending on this.
AM_CONDITIONAL(HAVE_CQL, test "$CQL_CONFIG" != "")

DISTCHECK_SYSREPO_CONFIGURE_FLAG=
sysrepo_config="no"
AC_ARG_WITH([sysrepo],
  AC_HELP_STRING([--with-sysrepo=PATH],
    [path to pkg-config or the Sysrepo 'sysrepo_config' script]),
    [sysrepo_config="$withval"])

if test "${sysrepo_config}" = "yes" ; then
    SYSREPO_CONFIG="$PKG_CONFIG"
    DISTCHECK_SYSREPO_CONFIGURE_FLAG="-with-sysrepo=${sysrepo_config}"
elif test "${sysrepo_config}" != "no" ; then
    SYSREPO_CONFIG="${sysrepo_config}"
    DISTCHECK_SYSREPO_CONFIGURE_FLAG="-with-sysrepo=${sysrepo_config}"
fi
AC_SUBST(DISTCHECK_SYSREPO_CONFIGURE_FLAG)

if test "$SYSREPO_CONFIG" != "" ; then
    if test -d "$SYSREPO_CONFIG" -o ! -x "$SYSREPO_CONFIG" ; then
        AC_MSG_ERROR([--with-sysrepo should point to a pkg-config or sysrepo_config program])
    fi

    # Let's get the configuration environment for pure Sysrepo (written in C) first
    SYSREPO_INCLUDEDIR=`$SYSREPO_CONFIG --cflags-only-I libsysrepo`
    SYSREPO_CPPFLAGS="$SYSREPO_INCLUDEDIR `$SYSREPO_CONFIG --cflags-only-other libsysrepo`"
    SYSREPO_LIBS="`$SYSREPO_CONFIG --libs libsysrepo`"
    SYSREPO_VERSION=`$SYSREPO_CONFIG --modversion libsysrepo`
    SYSREPO_REPO=`$SYSREPO_CONFIG --variable=SR_REPOSITORY_LOC libsysrepo`

    # Now get the environment for C++ bindings for Sysrepo.
    SYSREPOCPP_INCLUDEDIR=`$SYSREPO_CONFIG --cflags-only-I libSysrepo-cpp`
    SYSREPOCPP_CPPFLAGS="$SYSREPO_INCLUDEDIR `$SYSREPO_CONFIG --cflags-only-other libSysrepo-cpp`"
    SYSREPOCPP_LIBS="`$SYSREPO_CONFIG --libs libSysrepo-cpp`"
    SYSREPOCPP_VERSION=`$SYSREPO_CONFIG --modversion libSysrepo-cpp`

    # If include paths are equal, there's no need to include both. But if they're different,
    # we need both.
    if test "${SYSREPO_INCLUDEDIR}" != "${SYSREPOCPP_INCLUDEDIR}"; then
       SYSREPO_INCLUDEDIR="${SYSREPO_INCLUDEDIR} ${SYSREPOCPP_INCLUDEDIR}"
    fi

    if test "${SYSREPO_CPPFLAGS}" != "${SYSREPOCPP_CPPFLAGS}"; then
       SYSREPO_CPPFLAGS="${SYSREPO_CPPFLAGS} ${SYSREPOCPP_CPPFLAGS}"
    fi

    if test "${SYSREPO_LIBS}" != "${SYSREPOCPP_LIBS}"; then
       SYSREPO_LIBS="${SYSREPO_LIBS} ${SYSREPOCPP_LIBS}"
    fi

    AC_SUBST(SYSREPO_CPPFLAGS)
    AC_SUBST(SYSREPO_LIBS)
    AC_SUBST(SYSREPO_REPO)

    # Check that a simple program using Sysrepo functions can compile and link.
    CPPFLAGS_SAVED="$CPPFLAGS"
    LIBS_SAVED="$LIBS"

    CPPFLAGS="$SYSREPO_CPPFLAGS $CPPFLAGS"
    LIBS="$SYSREPO_LIBS $LIBS"

    AC_LINK_IFELSE(
            [AC_LANG_PROGRAM([extern "C" {
                              #include <sysrepo.h>
                              }],
                              [sr_conn_ctx_t *connection = NULL;
                              sr_session_ctx_t *session = NULL;
                              sr_connect("configure_test", SR_CONN_DEFAULT, &connection);
                              sr_disconnect(connection);])],
            [AC_MSG_RESULT([checking for Sysrepo headers and library... yes])],
            [AC_MSG_RESULT([checking for Sysrepo headers and library... no])
             AC_MSG_ERROR([Needs Sysrepo library])]
    )

    AC_LINK_IFELSE(
        [AC_LANG_PROGRAM(
            [#include <sysrepo-cpp/Session.hpp>],
            [sysrepo::Connection("conn-name");])],
        [AC_MSG_RESULT([checking for Sysrepo C++ bindings headers and library... yes])],
        [AC_LINK_IFELSE(
            [AC_LANG_PROGRAM(
                [#include <sysrepo-cpp/Session.h>],
                [Connection("conn-name");])],
            [AC_MSG_RESULT([checking for Sysrepo C++ bindings headers and library... old])
             AC_DEFINE([HAVE_PRE_0_7_6_SYSREPO], [1], [Using sysrepo < 0.7.6])],
             [AC_MSG_RESULT([checking for Sysrepo C++ bindings headers and library... no])
              AC_MSG_ERROR([Needs Sysrepo C++ bindings (unable to find Sysrepo-ccp library. To get it, you need to compile sysrepo with -DGEN_CPP_BINDINGS=ON.)])]
        )]
    )

    CPPFLAGS=$CPPFLAGS_SAVED
    LIBS=$LIBS_SAVED

    # Note that Sysrepo is present in the config.h file
    AC_DEFINE([HAVE_SYSREPO], [1], [SYSREPO is present])
fi

# ... and at the shell level, so Makefile.am can take action depending on this.
AM_CONDITIONAL(HAVE_SYSREPO, test "$SYSREPO_CONFIG" != "")

# Check for log4cplus
DISTCHECK_LOG4CPLUS_CONFIGURE_FLAG=
log4cplus_path="yes"
AC_ARG_WITH([log4cplus],
  AC_HELP_STRING([--with-log4cplus=PATH],
    [specify exact directory of log4cplus library and headers]),
    [log4cplus_path="$withval"])
if test "${log4cplus_path}" = "no" ; then
    AC_MSG_ERROR([Need log4cplus])
elif test "${log4cplus_path}" != "yes" ; then
  DISTCHECK_LOG4CPLUS_CONFIGURE_FLAG="-with-log4cplus=${log4cplus_path}"
  LOG4CPLUS_INCLUDES="-I${log4cplus_path}/include"
  LOG4CPLUS_LIBS="-L${log4cplus_path}/lib"
else
# If not specified, try some common paths.
        for d in $defaultdirs
        do
                if test -f $d/include/log4cplus/logger.h; then
                        LOG4CPLUS_INCLUDES="-I$d/include"
                        LOG4CPLUS_LIBS="-L$d/lib -L$d/lib64"
                        break
                fi
        done
	DISTCHECK_LOG4CPLUS_CONFIGURE_FLAG="-with-log4cplus"
fi

LOG4CPLUS_LIBS="$LOG4CPLUS_LIBS -llog4cplus"

AC_SUBST(DISTCHECK_LOG4CPLUS_CONFIGURE_FLAG)
AC_SUBST(LOG4CPLUS_LIBS)
AC_SUBST(LOG4CPLUS_INCLUDES)

CPPFLAGS_SAVED=$CPPFLAGS
CPPFLAGS="$LOG4CPLUS_INCLUDES $CPPFLAGS"
LIBS_SAVED="$LIBS"
LIBS="$LOG4CPLUS_LIBS $MULTITHREADING_FLAG $LIBS"

AC_CHECK_HEADERS([log4cplus/logger.h],,AC_MSG_ERROR([Missing required header files.]))
AC_LINK_IFELSE(
        [AC_LANG_PROGRAM([#include <log4cplus/logger.h>
                         ],
                         [using namespace log4cplus;
                          Logger logger = Logger::getInstance("main");
                         ])],
        [AC_MSG_RESULT([checking for log4cplus library... yes])],
        [AC_MSG_RESULT([checking for log4cplus library... no])
         AC_MSG_ERROR([Needs log4cplus library])]
)

dnl Determine the log4cplus version, used mainly for config.report.
AC_MSG_CHECKING([log4cplus version])
cat > conftest.cpp << EOF
#include <log4cplus/version.h>
AUTOCONF_LOG4CPLUS_VERSION=LOG4CPLUS_VERSION_STR
EOF

LOG4CPLUS_VERSION=`$CPPP $CPPFLAGS conftest.cpp | grep '^AUTOCONF_LOG4CPLUS_VERSION=' | $SED -e 's/^AUTOCONF_LOG4CPLUS_VERSION=//' -e 's/[[ 	]]//g' -e 's/"//g' 2> /dev/null`
if test -z "$LOG4CPLUS_VERSION"; then
  LOG4CPLUS_VERSION="unknown"
fi
$RM -f conftest.cpp
AC_MSG_RESULT([$LOG4CPLUS_VERSION])

CPPFLAGS=$CPPFLAGS_SAVED
LIBS=$LIBS_SAVED

#
# Configure Boost header path
#
AX_BOOST_FOR_KEA
# Boost offset_ptr is required in one library and not optional right now, so
# we unconditionally fail here if it doesn't work.
if test "$BOOST_OFFSET_PTR_WOULDFAIL" = "yes" -a X"$werror_ok" = X1; then
    AC_MSG_ERROR([Failed to compile a required header file.  Try upgrading Boost to 1.44 or higher (when using clang++) or specifying --without-werror.  See the ChangeLog entry for Trac no. 2147 for more details.])
fi

if test "$BOOST_STATIC_ASSERT_WOULDFAIL" = "yes" -a X"$werror_ok" = X1; then
    AC_MSG_ERROR([Failed to use Boost static assertions. Try upgrading Boost to 1.54 or higher (when using GCC 4.8) or specifying --without-werror.  See trac ticket no. 3039 for more details.])
fi

# There's a known bug in FreeBSD ports for Boost that would trigger a false
# warning in build with g++ and -Werror (we exclude clang++ explicitly to
# avoid unexpected false positives).
if test "$BOOST_NUMERIC_CAST_WOULDFAIL" = "yes" -a X"$werror_ok" = X1 -a $CLANGPP = "no"; then
    AC_MSG_ERROR([Failed to compile a required header file.  If you are using FreeBSD and Boost installed via ports, retry with specifying --without-werror.  See the ChangeLog entry for Trac no. 1991 for more details.])
fi

# Add some default CPP flags needed for Boost, identified by the AX macro.
CPPFLAGS="$CPPFLAGS $CPPFLAGS_BOOST_THREADCONF"

# Can be required by gtest, boost and perhaps still asio
AC_CHECK_LIB(pthread, pthread_create,[ LDFLAGS="$LDFLAGS -lpthread" ], [])

#
# Check availability of gtest, which will be used for unit tests.
#
GTEST_LDFLAGS=
GTEST_LDADD=
DISTCHECK_GTEST_CONFIGURE_FLAG=
GTEST_VERSION="unknown"

if test "x$enable_gtest" = "xyes" ; then

    DISTCHECK_GTEST_CONFIGURE_FLAG="--with-gtest=$gtest_path"

    if test -n "$with_gtest_source" ; then

        if test "x$GTEST_SOURCE" = "xyes" ; then

            AC_MSG_CHECKING([for gtest source])
            # If not specified, try some common paths.
            GTEST_SOURCE=
            for d in /usr/src/gtest /usr/local /usr/pkg /opt /opt/local ; do
                if test -f $d/src/gtest-all.cc -a $d/src/gtest_main.cc; then
                    GTEST_SOURCE=$d
                    AC_MSG_RESULT([$GTEST_SOURCE])
                    break
                fi
            done
            if test -z $GTEST_SOURCE ; then
                AC_MSG_ERROR([no gtest source but it was selected])
            fi
        else
            if test ! -d $GTEST_SOURCE/src -a -d $GTEST_SOURCE/googletest; then
                GTEST_SOURCE=$GTEST_SOURCE/googletest
            fi
            AC_CHECK_FILES([$GTEST_SOURCE/src/gtest-all.cc]
                [$GTEST_SOURCE/src/gtest_main.cc],
                [have_gtest_source=yes],
                [AC_MSG_ERROR([no gtest source at $GTEST_SOURCE])])
        fi
        have_gtest_source=yes
        GTEST_LDADD="\$(top_builddir)/ext/gtest/libgtest.a"
        DISTCHECK_GTEST_CONFIGURE_FLAG="--with-gtest-source=$GTEST_SOURCE"
        GTEST_INCLUDES="-I$GTEST_SOURCE -I$GTEST_SOURCE/include"
        GTEST_VERSION="`basename $GTEST_SOURCE`"
    fi

    if test "$gtest_path" != "no" ; then
        if test "$gtest_path" != "yes"; then
            GTEST_PATHS=$gtest_path
            if test -x "${gtest_path}/bin/gtest-config" ; then
                GTEST_CONFIG="${gtest_path}/bin/gtest-config"
            fi
        else
            AC_PATH_PROG([GTEST_CONFIG], [gtest-config])
        fi
        if test -x "${GTEST_CONFIG}" ; then :
            # using cppflags instead of cxxflags
            GTEST_INCLUDES=`${GTEST_CONFIG} --cppflags`
            GTEST_LDFLAGS=`${GTEST_CONFIG} --ldflags`
            GTEST_LDADD=`${GTEST_CONFIG} --libs`
            GTEST_VERSION=`${GTEST_CONFIG} --version`
            GTEST_FOUND="true"
        else
            AC_MSG_WARN([Unable to locate Google Test gtest-config.])
            if test -z "${GTEST_PATHS}" ; then
                GTEST_PATHS="/usr /usr/local"
            fi
            GTEST_FOUND="false"
        fi
        if test "${GTEST_FOUND}" != "true"; then
            GTEST_FOUND="false"
            for dir in $GTEST_PATHS; do
                if test -f "$dir/include/gtest/gtest.h"; then
                    if ! test -f "$dir/lib/libgtests.a"; then
                        AC_MSG_WARN([Found Google Test include but not the library in $dir.])
                        continue
                    fi
                    GTEST_INCLUDES="-I$dir/include"
                    GTEST_LDFLAGS="-L$dir/lib"
                    GTEST_LDADD="-lgtest"
                    GTEST_FOUND="true"
                    break
                fi
            done
        fi
        if test "${GTEST_FOUND}" != "true"; then
            AC_MSG_ERROR([Cannot find gtest in: $GTEST_PATHS])
        fi

    fi
fi
AM_CONDITIONAL(HAVE_GTEST, test $enable_gtest != "no")
AM_CONDITIONAL(HAVE_GTEST_SOURCE, test "X$have_gtest_source" = "Xyes")
AC_SUBST(DISTCHECK_GTEST_CONFIGURE_FLAG)
AC_SUBST(GTEST_INCLUDES)
AC_SUBST(GTEST_LDFLAGS)
AC_SUBST(GTEST_LDADD)
AC_SUBST(GTEST_SOURCE)

#
# Check availability of benchmark.
#
BENCHMARK_CPPFLAGS=
BENCHMARK_LDFLAGS=
BENCHMARK_LDADD=
DISTCHECK_BENCHMARK_CONFIGURE_FLAG=
BENCHMARK_VERSION="unknown"

if test "x$enable_benchmark" = "xyes" ; then

    DISTCHECK_BENCHMARK_CONFIGURE_FLAG="--with-benchmark=$benchmark_path"

    if test -n "$with_benchmark_source" ; then

        if test "x$BENCHMARK_SOURCE" = "xyes" ; then

            AC_MSG_CHECKING([for benchmark source])
            # If not specified, try some common paths.
            BENCHMARK_SOURCE=
            for d in /usr/src/benchmark /usr/local /usr/pkg /opt /opt/local ; do
                if test -f $d/src/benchmark.cc; then
                    BENCHMARK_SOURCE=$d
                    AC_MSG_RESULT([$BENCHMARK_SOURCE])
                    break
                fi
            done
            if test -z $BENCHMARK_SOURCE ; then
                AC_MSG_ERROR([no benchmark source but it was selected])
            fi
        else
            if test ! -d $BENCHMARK_SOURCE/src; then
                BENCHMARK_SOURCE=$BENCHMARK_SOURCE/benchmark
            fi
            AC_CHECK_FILES([$BENCHMARK_SOURCE/src/benchmark.cc],
                [have_benchmark_source=yes],
                [AC_MSG_ERROR([no benchmark source at $BENCHMARK_SOURCE])])
        fi
        have_benchmark_source=yes
        BENCHMARK_CPPFLAGS=`cat \${BENCHMARK_SOURCE}/build/src/CMakeFiles/benchmark.dir/flags.make | grep CXX_DEFINES | cut -d "=" -f 2`
        BENCHMARK_LDADD="\$(BENCHMARK_SOURCE)/build/src/libbenchmark.a"
        DISTCHECK_BENCHMARK_CONFIGURE_FLAG="--with-benchmark-source=$BENCHMARK_SOURCE"
        BENCHMARK_INCLUDES="-I$BENCHMARK_SOURCE \
                            -I$BENCHMARK_SOURCE/src \
                            -I$BENCHMARK_SOURCE/include \
                            -I$BENCHMARK_SOURCE/include/benchmark"
        BENCHMARK_VERSION="$(basename $BENCHMARK_SOURCE)"
    fi

    if test "$benchmark_path" != "no" ; then
        if test "$benchmark_path" != "yes"; then
            BENCHMARK_PATHS=$benchmark_path
        fi
        if test -z "${BENCHMARK_PATHS}" ; then
            BENCHMARK_PATHS="/usr /usr/local"
        fi
        BENCHMARK_FOUND="false"
        for dir in ${BENCHMARK_PATHS}; do
            if test -f "$dir/include/benchmark/benchmark.h"; then
                if ! test -f "$dir/lib/libbenchmark.a"; then
                    AC_MSG_WARN([Found Google Benchmark include but not the library in $dir.])
                    continue
                fi
                BENCHMARK_INCLUDES="-I$dir/include"
                BENCHMARK_LDFLAGS="-L$dir/lib"
                BENCHMARK_LDADD="$dir/lib/libbenchmark.a "
                BENCHMARK_FOUND="true"
                break
            fi
        done
        if test "${BENCHMARK_FOUND}" != "true"; then
            AC_MSG_ERROR([Cannot find benchmark in: $BENCHMARK_PATHS])
        fi

    fi
fi
AM_CONDITIONAL(HAVE_BENCHMARK, test $enable_benchmark != "no")
AM_CONDITIONAL(HAVE_BENCHMARK_SOURCE, test "X$have_benchmark_source" = "Xyes")
AC_SUBST(DISTCHECK_BENCHMARK_CONFIGURE_FLAG)
AC_SUBST(BENCHMARK_CPPFLAGS)
AC_SUBST(BENCHMARK_INCLUDES)
AC_SUBST(BENCHMARK_LDFLAGS)
AC_SUBST(BENCHMARK_LDADD)
AC_SUBST(BENCHMARK_SOURCE)

#
# Some Googletest versions bug with C++11 compilers
#
if test $enable_gtest != "no"; then
   AC_MSG_CHECKING([if Google Test is compatible with the compiler])
   CPPFLAGS_SAVED=$CPPFLAGS
   CPPFLAGS="$CPPFLAGS $BOOST_INCLUDES $GTEST_INCLUDES"
   AC_COMPILE_IFELSE(
       [AC_LANG_PROGRAM(
            [#include <boost/shared_ptr.hpp>
            #include <gtest/gtest.h>
            void foo() {
                boost::shared_ptr<int> bar;
                ASSERT_TRUE(bar);
            }],
            [return 0;])],
        [AC_MSG_RESULT(yes)],
        [AC_MSG_ERROR([XXX_TRUE() Google Test macros won't compile; the most likely reason is that a later version of Google Test is required])])
    CPPFLAGS=$CPPFLAGS_SAVED
fi

# Check for CreateUnifiedDiff from gtest >= 1.8.0
if test $enable_gtest != "no"; then
   AC_MSG_CHECKING([for CreateUnifiedDiff in $GTEST_INCLUDES/gtest.h])
   CPPFLAGS_SAVED=$CPPFLAGS
   CPPFLAGS="$CPPFLAGS $BOOST_INCLUDES $GTEST_INCLUDES"
   AC_COMPILE_IFELSE(
       [AC_LANG_PROGRAM(
            [#include <boost/algorithm/string.hpp>
            #include <gtest/gtest.h>
            #include <string>
            #include <vector>
            std::string nodiff(std::string text) {
                std::vector<std::string> lines;
                boost::split(lines, text, boost::is_any_of("\n"));
                using namespace testing::internal;
                return (edit_distance::CreateUnifiedDiff(lines, lines));
            }],
            [return 0;])],
        [AC_MSG_RESULT(yes)
        AC_DEFINE([HAVE_CREATE_UNIFIED_DIFF], [1],
        [Define to 1 if gtest defines edit_distance::CreateUnifiedDiff])],
        [AC_MSG_RESULT(no)])
    CPPFLAGS=$CPPFLAGS_SAVED
fi

#
# ASIO: we extensively use it as the C++ event management module.
#
# Use our 'coroutine' header from ext
# CPPFLAGS="$CPPFLAGS -I\$(top_srcdir)/ext/coroutine"

#
# Doesn't seem to be required?
CPPFLAGS="$CPPFLAGS -DBOOST_ASIO_HEADER_ONLY"
#
# Disable threads: they seems to break things on some systems
# As now we use threads in boost ASIO this is commented out...
# CPPFLAGS="$CPPFLAGS -DBOOST_ASIO_DISABLE_THREADS=1"

# We tried to stay header only
if test "x${BOOST_LIBS}" = "x"; then
   # Don't want boost system library
   CPPFLAGS="$CPPFLAGS -DBOOST_ERROR_CODE_HEADER_ONLY"
   # Avoid boost::system::throws multiple defines
   CPPFLAGS="$CPPFLAGS -DBOOST_SYSTEM_NO_DEPRECATED"
fi

# Check for functions that are not available on all platforms
AC_CHECK_FUNCS([pselect srandomdev])

# /dev/poll issue: ASIO uses /dev/poll by default if it's available (generally
# the case with Solaris).  Unfortunately its /dev/poll specific code would
# trigger the gcc's "missing-field-initializers" warning, which would
# subsequently make the build fail with -Werror.  Further, older versions of
# gcc don't provide an option to selectively suppress this warning.
# So, for the moment, we simply disable the use of /dev/poll.  Unless we
# implement recursive DNS server with randomized ports, we don't need the
# scalability that /dev/poll can provide, so this decision wouldn't affect
# run time performance.  Hopefully we can find a better solution or the ASIO
# code will be updated by the time we really need it.
AC_CHECK_HEADERS(sys/devpoll.h, ac_cv_have_devpoll=yes, ac_cv_have_devpoll=no)
if test "X$ac_cv_have_devpoll" = "Xyes" -a "X$GXX" = "Xyes"; then
    CPPFLAGS="$CPPFLAGS -DBOOST_ASIO_DISABLE_DEV_POLL=1"
fi

#
# Perl is optional; it is used only by some of the system test scripts.
#
AC_PATH_PROGS(PERL, perl5 perl)
AC_SUBST(PERL)
AC_PATH_PROGS(AWK, gawk awk)
AC_SUBST(AWK)

AC_ARG_ENABLE(generate_parser, [AC_HELP_STRING([--enable-generate-parser],
  [indicates that the parsers will be regenerated. This implies that the
   bison and flex are required [default=no]])],
   enable_generate_parser=$enableval, enable_generate_parser=no)

# Check if flex is available. Flex is not needed for building Kea sources,
# unless you want to regenerate grammars
AC_PROG_LEX

# Check if bison is available. Bison is not needed for building Kea sources,
# unless you want to regenerate grammars
AC_PROG_YACC

if test "x$enable_generate_parser" != "xno"; then

    if test "x$LEX" == "x"; then
       AC_MSG_ERROR([Flex is required for enable-generate-parser, but was not found])
    fi

    if test "x$YACC" == "x"; then
       AC_MSG_ERROR([Bison is required for enable-generate-parser, but was not found])
    fi

# Ok, let's check if we have at least 3.0.0 version of the bison. The code used
# to generate parsers is roughly based on bison 3.0 examples.
   cat > bisontest.y << EOF
%require "3.0.0"
%token X
%%
%start Y;
Y: X;
EOF
# Try to compile.
    $YACC bisontest.y -o bisontest.cc

    if test $? -ne 0 ; then
        $YACC -V
        $RM -f bisontest.y bisontest.cc
        AC_MSG_ERROR("Error with $YACC. Possibly incorrect version? Required at least 3.0.0.")
    fi
    $RM -f bisontest.y bisontest.cc
fi

AM_CONDITIONAL([GENERATE_PARSER], [test x$enable_generate_parser != xno])

AC_ARG_ENABLE(generate_docs, [AC_HELP_STRING([--enable-generate-docs],
  [regenerate documentation using Docbook [default=no]])],
  enable_generate_docs=$enableval, enable_generate_docs=no)

if test "x$enable_generate_docs" != xno ; then

# Check for xsltproc
  AC_PATH_PROG([XSLTPROC], [xsltproc])
  if test -z "$XSLTPROC"; then
    AC_MSG_ERROR("xsltproc not found; it is required for --enable-generate-docs")
  else
    AC_MSG_CHECKING([if $XSLTPROC works])
    # run xsltproc to see if works
    $XSLTPROC --novalid --xinclude http://docbook.sourceforge.net/release/xsl/current/manpages/docbook.xsl
    if test $? -ne 0 ; then
      AC_MSG_ERROR("Error with $XSLTPROC using release/xsl/current/manpages/docbook.xsl")
    fi
    $XSLTPROC --novalid --xinclude http://docbook.sourceforge.net/release/xsl/current/html/docbook.xsl
    if test $? -ne 0 ; then
      AC_MSG_ERROR("Error with $XSLTPROC using release/xsl/current/html/docbook.xsl")
    fi
    AC_MSG_RESULT(yes)
  fi

  AC_PATH_PROG([ELINKS], [elinks])
  if test -z "$ELINKS"; then
    AC_MSG_ERROR("elinks not found; it is required for --enable-generate-docs")
  fi
fi

# Don't fail here if not found, used to generate PDF documentation.
AC_PATH_PROG([DBLATEX], [dblatex])
AM_CONDITIONAL(HAVE_DBLATEX, test "x$DBLATEX" != "x")

AM_CONDITIONAL(GENERATE_DOCS, test x$enable_generate_docs != xno)

AC_ARG_ENABLE(install-configurations,
  [AC_HELP_STRING([--disable-install-configurations],
  [do not install configuration])], install_configurations=$enableval, install_configurations=yes)

AM_CONDITIONAL(INSTALL_CONFIGURATIONS, test x$install_configurations = xyes || test x$install_configurations = xtrue)

AC_ARG_ENABLE(logger-checks, [AC_HELP_STRING([--enable-logger-checks],
  [check logger messages [default=no]])], enable_logger_checks=$enableval, enable_logger_checks=no)
AM_CONDITIONAL(ENABLE_LOGGER_CHECKS, test x$enable_logger_checks != xno)
AM_COND_IF([ENABLE_LOGGER_CHECKS], [AC_DEFINE([ENABLE_LOGGER_CHECKS], [1], [Check logger messages?])])

# Check for asciidoc
AC_PATH_PROG(ASCIIDOC, asciidoc, no)
AM_CONDITIONAL(HAVE_ASCIIDOC, test "x$ASCIIDOC" != "xno")

# Check for plantuml
AC_PATH_PROG(PLANTUML, plantuml, no)
AM_CONDITIONAL(HAVE_PLANTUML, test "x$PLANTUML" != "xno")

# Check for valgrind
AC_PATH_PROG(VALGRIND, valgrind, no)
AM_CONDITIONAL(HAVE_VALGRIND, test "x$VALGRIND" != "xno")

# Also check for valgrind headers
# We could consider adding them to the source code tree, as this
# is the encouraged method of using them; they are BSD-licensed.
# However, until we find that this is a problem, we just use
# the system-provided ones, if available
AC_CHECK_HEADERS(valgrind/valgrind.h, [AC_DEFINE([HAVE_VALGRIND_HEADERS], [1], [Check valgrind headers])])

found_valgrind="not found"
if test "x$VALGRIND" != "xno"; then
   found_valgrind="found"
fi

# Check for optreset in unistd.h. On BSD systems the optreset is
# used to reset the state of getopt() function. Resetting its state
# is required if command line arguments are parsed multiple times
# during a program. On Linux this variable will not exist because
# getopt() reset is performed by setting optind = 0. On Operating
# Systems where optreset is defined use optreset = 1 and optind = 1
# to reset internal state of getopt(). Failing to do so will result
# in unpredictable output from getopt().
AC_MSG_CHECKING([whether optreset variable is defined in unistd.h])
AC_TRY_LINK(
    [#include <unistd.h>],
    [extern int optreset; optreset=1;],
    [ AC_MSG_RESULT(yes)
      var_optreset_exists=yes],
    [ AC_MSG_RESULT(no)
      var_optreset_exists=no]
)
AM_CONDITIONAL(HAVE_OPTRESET, test "x$var_optreset_exists" != "xno")
AM_COND_IF([HAVE_OPTRESET], [AC_DEFINE([HAVE_OPTRESET], [1], [Check for optreset?])])

AC_DEFINE([CONFIG_H_WAS_INCLUDED], [1], [config.h inclusion marker])

AC_CONFIG_FILES([Makefile
                 compatcheck/Makefile
                 dns++.pc
                 doc/Makefile
                 doc/guide/Makefile
                 doc/version.ent
                 doc/docgen/Makefile
                 ext/Makefile
                 ext/gtest/Makefile
                 ext/coroutine/Makefile
                 kea_version.h
                 m4macros/Makefile
                 src/Makefile
                 src/bin/Makefile
                 src/bin/admin/Makefile
                 src/bin/admin/kea-admin
                 src/bin/admin/tests/Makefile
                 src/bin/admin/tests/cql_tests.sh
                 src/bin/admin/tests/data/Makefile
                 src/bin/admin/tests/memfile_tests.sh
                 src/bin/admin/tests/mysql_tests.sh
                 src/bin/admin/tests/pgsql_tests.sh
                 src/bin/agent/Makefile
                 src/bin/agent/tests/Makefile
                 src/bin/agent/tests/ca_process_tests.sh
                 src/bin/agent/tests/test_data_files_config.h
                 src/bin/agent/tests/test_libraries.h
                 src/bin/d2/Makefile
                 src/bin/d2/tests/Makefile
                 src/bin/d2/tests/d2_process_tests.sh
                 src/bin/d2/tests/test_data_files_config.h
                 src/bin/dhcp4/Makefile
                 src/bin/dhcp4/tests/Makefile
                 src/bin/dhcp4/tests/dhcp4_process_tests.sh
                 src/bin/dhcp4/tests/marker_file.h
                 src/bin/dhcp4/tests/test_data_files_config.h
                 src/bin/dhcp4/tests/test_libraries.h
                 src/bin/dhcp6/Makefile
                 src/bin/dhcp6/tests/Makefile
                 src/bin/dhcp6/tests/dhcp6_process_tests.sh
                 src/bin/dhcp6/tests/marker_file.h
                 src/bin/dhcp6/tests/test_data_files_config.h
                 src/bin/dhcp6/tests/test_libraries.h
                 src/bin/keactrl/Makefile
                 src/bin/keactrl/keactrl
                 src/bin/keactrl/keactrl.conf
                 src/bin/keactrl/tests/Makefile
                 src/bin/keactrl/tests/keactrl_tests.sh
                 src/bin/lfc/Makefile
                 src/bin/lfc/tests/Makefile
                 src/bin/netconf/Makefile
                 src/bin/netconf/tests/Makefile
                 src/bin/netconf/tests/shtests/Makefile
                 src/bin/netconf/tests/shtests/netconf_tests.sh
                 src/bin/netconf/tests/test_data_files_config.h
                 src/bin/netconf/tests/test_libraries.h
                 src/bin/perfdhcp/Makefile
                 src/bin/perfdhcp/tests/Makefile
                 src/bin/perfdhcp/tests/testdata/Makefile
                 src/bin/shell/Makefile
                 src/bin/shell/kea-shell
                 src/bin/shell/tests/Makefile
                 src/bin/shell/tests/shell_process_tests.sh
                 src/bin/shell/tests/shell_unittest.py
                 src/hooks/Makefile
                 src/hooks/dhcp/Makefile
                 src/hooks/dhcp/high_availability/Makefile
                 src/hooks/dhcp/high_availability/tests/Makefile
                 src/hooks/dhcp/lease_cmds/Makefile
                 src/hooks/dhcp/lease_cmds/tests/Makefile
                 src/hooks/dhcp/user_chk/Makefile
                 src/hooks/dhcp/user_chk/tests/Makefile
                 src/hooks/dhcp/user_chk/tests/test_data_files_config.h
                 src/hooks/dhcp/stat_cmds/Makefile
                 src/hooks/dhcp/stat_cmds/tests/Makefile
                 src/lib/Makefile
                 src/lib/asiodns/Makefile
                 src/lib/asiodns/tests/Makefile
                 src/lib/asiolink/Makefile
                 src/lib/asiolink/testutils/Makefile
                 src/lib/asiolink/tests/Makefile
                 src/lib/cc/Makefile
                 src/lib/cc/tests/Makefile
                 src/lib/cfgrpt/Makefile
                 src/lib/cfgrpt/tests/Makefile
                 src/lib/config/Makefile
                 src/lib/config/tests/Makefile
                 src/lib/config/tests/data_def_unittests_config.h
                 src/lib/config/tests/testdata/Makefile
                 src/lib/config_backend/Makefile
                 src/lib/config_backend/tests/Makefile
                 src/lib/cryptolink/Makefile
                 src/lib/cryptolink/tests/Makefile
                 src/lib/database/Makefile
                 src/lib/database/tests/Makefile
                 src/lib/database/testutils/Makefile
                 src/lib/dhcp/Makefile
                 src/lib/dhcp/tests/Makefile
                 src/lib/dhcp_ddns/Makefile
                 src/lib/dhcp_ddns/tests/Makefile
                 src/lib/dhcpsrv/Makefile
                 src/lib/dhcpsrv/benchmarks/Makefile
                 src/lib/dhcpsrv/tests/Makefile
                 src/lib/dhcpsrv/tests/test_libraries.h
                 src/lib/dhcpsrv/testutils/Makefile
                 src/lib/dns/Makefile
                 src/lib/dns/gen-rdatacode.py
                 src/lib/dns/tests/Makefile
                 src/lib/dns/tests/testdata/Makefile
                 src/lib/eval/Makefile
                 src/lib/eval/tests/Makefile
                 src/lib/exceptions/Makefile
                 src/lib/exceptions/tests/Makefile
                 src/lib/hooks/Makefile
                 src/lib/hooks/tests/Makefile
                 src/lib/hooks/tests/marker_file.h
                 src/lib/hooks/tests/test_libraries.h
                 src/lib/http/Makefile
                 src/lib/http/tests/Makefile
                 src/lib/log/Makefile
                 src/lib/log/compiler/Makefile
                 src/lib/log/interprocess/Makefile
                 src/lib/log/interprocess/tests/Makefile
                 src/lib/log/tests/Makefile
                 src/lib/log/tests/buffer_logger_test.sh
                 src/lib/log/tests/console_test.sh
                 src/lib/log/tests/destination_test.sh
                 src/lib/log/tests/init_logger_test.sh
                 src/lib/log/tests/local_file_test.sh
                 src/lib/log/tests/logger_lock_test.sh
                 src/lib/log/tests/severity_test.sh
                 src/lib/log/tests/tempdir.h
                 src/lib/mysql/Makefile
                 src/lib/mysql/testutils/Makefile
                 src/lib/mysql/tests/Makefile
                 src/lib/pgsql/Makefile
                 src/lib/pgsql/tests/Makefile
                 src/lib/pgsql/testutils/Makefile
                 src/lib/cql/Makefile
                 src/lib/cql/tests/Makefile
                 src/lib/cql/testutils/Makefile
                 src/lib/process/Makefile
                 src/lib/process/tests/Makefile
                 src/lib/process/testutils/Makefile
                 src/lib/stats/Makefile
                 src/lib/stats/tests/Makefile
                 src/lib/testutils/Makefile
                 src/lib/testutils/dhcp_test_lib.sh
                 src/lib/util/Makefile
                 src/lib/util/io/Makefile
                 src/lib/util/python/Makefile
                 src/lib/util/python/gen_wiredata.py
                 src/lib/util/tests/Makefile
                 src/lib/util/tests/process_spawn_app.sh
                 src/lib/util/threads/Makefile
                 src/lib/util/threads/tests/Makefile
                 src/lib/util/unittests/Makefile
                 src/lib/yang/Makefile
                 src/lib/yang/pretests/Makefile
                 src/lib/yang/tests/Makefile
                 src/lib/yang/testutils/Makefile
                 src/share/Makefile
                 src/share/database/Makefile
                 src/share/database/scripts/Makefile
                 src/share/database/scripts/cql/Makefile
                 src/share/database/scripts/cql/upgrade_1.0_to_2.0.sh
                 src/share/database/scripts/cql/upgrade_2.0_to_3.0.sh
                 src/share/database/scripts/mysql/Makefile
                 src/share/database/scripts/mysql/upgrade_1.0_to_2.0.sh
                 src/share/database/scripts/mysql/upgrade_2.0_to_3.0.sh
                 src/share/database/scripts/mysql/upgrade_3.0_to_4.0.sh
                 src/share/database/scripts/mysql/upgrade_4.0_to_4.1.sh
                 src/share/database/scripts/mysql/upgrade_4.1_to_5.0.sh
                 src/share/database/scripts/mysql/upgrade_5.0_to_5.1.sh
                 src/share/database/scripts/mysql/upgrade_5.1_to_5.2.sh
                 src/share/database/scripts/mysql/upgrade_5.2_to_6.0.sh
                 src/share/database/scripts/mysql/upgrade_6.0_to_7.0.sh
                 src/share/database/scripts/pgsql/Makefile
                 src/share/database/scripts/pgsql/upgrade_1.0_to_2.0.sh
                 src/share/database/scripts/pgsql/upgrade_2.0_to_3.0.sh
                 src/share/database/scripts/pgsql/upgrade_3.0_to_3.1.sh
                 src/share/database/scripts/pgsql/upgrade_3.1_to_3.2.sh
                 src/share/database/scripts/pgsql/upgrade_3.2_to_3.3.sh
                 src/share/database/scripts/pgsql/upgrade_3.3_to_4.0.sh
                 src/share/database/scripts/pgsql/upgrade_4.0_to_5.0.sh
                 src/share/yang/Makefile
                 src/share/yang/modules/Makefile
                 tools/Makefile
                 tools/path_replacer.sh
])

AC_CONFIG_COMMANDS([permissions], [
           chmod +x src/bin/admin/kea-admin
           chmod +x src/bin/dhcp4/tests/dhcp4_process_tests.sh
           chmod +x src/bin/dhcp6/tests/dhcp6_process_tests.sh
           chmod +x src/bin/keactrl/keactrl
           chmod +x src/bin/keactrl/tests/keactrl_tests.sh
           chmod +x src/bin/shell/kea-shell
           chmod +x src/bin/shell/tests/shell_process_tests.sh
           chmod +x src/bin/shell/tests/shell_unittest.py
           chmod +x src/lib/dns/gen-rdatacode.py
           chmod +x src/lib/log/tests/buffer_logger_test.sh
           chmod +x src/lib/log/tests/console_test.sh
           chmod +x src/lib/log/tests/destination_test.sh
           chmod +x src/lib/log/tests/init_logger_test.sh
           chmod +x src/lib/log/tests/local_file_test.sh
           chmod +x src/lib/log/tests/logger_lock_test.sh
           chmod +x src/lib/log/tests/severity_test.sh
           chmod +x src/lib/util/python/gen_wiredata.py
           chmod +x src/lib/util/tests/process_spawn_app.sh
           chmod +x tools/path_replacer.sh
])

AC_OUTPUT

dnl Print the results
dnl

EXTENDED_VERSION=${PACKAGE_VERSION}
if test "$KEA_SRCID" != ""; then
   EXTENDED_VERSION="${EXTENDED_VERSION} ($KEA_SRCID)"
fi

cat > config.report << END

       Kea source configure results:
    -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Package:
  Name:              ${PACKAGE_NAME}
  Version:           ${PACKAGE_VERSION}
  Extended version:  ${EXTENDED_VERSION}
  OS Family:         ${OS_TYPE}

  Hooks directory:   ${prefix}/lib/hooks
END
if test "$PREMIUM" != ""; then
cat >> config.report << END
  Premium hooks:     yes
  Included Hooks:   ${INCLUDED_HOOKS}
END
else
cat >> config.report << END
  Premium hooks:     no
END
fi
cat >> config.report << END

C++ Compiler:
  CXX:             ${CXX}
  CXX_VERSION:     ${CXX_VERSION}
  CXX_STANDARD:    ${CXX_STANDARD}
  DEFS:            ${DEFS}
  CPPFLAGS:        ${CPPFLAGS}
  CXXFLAGS:        ${CXXFLAGS}
  LDFLAGS:         ${LDFLAGS}
  KEA_CXXFLAGS:    ${KEA_CXXFLAGS}
END

if test "$PYTHON" != "no" ; then
cat >> config.report << END

Python:
  PYTHON:          ${PYTHON}
  PYTHON_VERSION:  ${PYTHON_VERSION}

END
else
cat >> config.report << END

Python:
  PYTHON_VERSION:  not needed (because kea-shell is disabled)

END
fi

cat >> config.report << END
Boost:
  BOOST_VERSION:   ${BOOST_VERSION}
  BOOST_INCLUDES:  ${BOOST_INCLUDES}
  BOOST_LIBS:      ${BOOST_LIBS}

END
if test x"$BOOST_LIBS" = "x"; then
   cat >> config.report << END
    WARNING: You will be building with boost headers only rather
    than linking with boost_system library. This is NOT recommended as
    it may result in non-optimized code on some platforms and
    introduce runtime errors on others.

END
fi

cat >> config.report << END
${CRYPTO_NAME}:
  CRYPTO_VERSION:  ${CRYPTO_VERSION}
  CRYPTO_CFLAGS:   ${CRYPTO_CFLAGS}
  CRYPTO_INCLUDES: ${CRYPTO_INCLUDES}
  CRYPTO_LDFLAGS:  ${CRYPTO_LDFLAGS}
  CRYPTO_LIBS:     ${CRYPTO_LIBS}

${DISABLED_CRYPTO}: no

Log4cplus:
  LOG4CPLUS_VERSION:  ${LOG4CPLUS_VERSION}
  LOG4CPLUS_INCLUDES: ${LOG4CPLUS_INCLUDES}
  LOG4CPLUS_LIBS:     ${LOG4CPLUS_LIBS}

Flex/bison:
  FLEX:  ${LEX}
  BISON: ${YACC}
END

# Avoid confusion on DNS/DHCP and only mention MySQL if it
# were specified on the command line.
if test "$MYSQL_CPPFLAGS" != "" ; then
cat >> config.report << END

MySQL:
  MYSQL_VERSION:   ${MYSQL_VERSION}
  MYSQL_CPPFLAGS:  ${MYSQL_CPPFLAGS}
  MYSQL_LIBS:      ${MYSQL_LIBS}
END
else
cat >> config.report << END

MySQL:
  no
END
fi

if test "$PGSQL_CPPFLAGS" != "" ; then
cat >> config.report << END

PostgreSQL:
  PGSQL_VERSION:   ${PGSQL_VERSION}
  PGSQL_CPPFLAGS:  ${PGSQL_CPPFLAGS}
  PGSQL_LIBS:      ${PGSQL_LIBS}
END
else
cat >> config.report << END

PostgreSQL:
  no
END
fi

if test "$CQL_CPPFLAGS" != "" ; then
cat >> config.report << END

Cassandra CQL:
  CQL_VERSION:     ${CQL_VERSION}
  CQL_CPPFLAGS:    ${CQL_CPPFLAGS}
  CQL_LIBS:        ${CQL_LIBS}
END
else
cat >> config.report << END

Cassandra CQL:
  no
END
fi

if test "$SYSREPO_CPPFLAGS" != "" ; then
cat >> config.report << END

Sysrepo:
  SYSREPO_VERSION:     ${SYSREPO_VERSION}
  SYSREPO_CPPFLAGS:    ${SYSREPO_CPPFLAGS}
  SYSREPO_LIBS:        ${SYSREPO_LIBS}
  SYSREPO_REPO:        ${SYSREPO_REPO}
END
else
cat >> config.report << END

Sysrepo:
  no
END
fi

if test "$enable_gtest" != "no"; then
cat >> config.report << END

Google Test:
  GTEST_VERSION:   ${GTEST_VERSION}
  GTEST_INCLUDES:  ${GTEST_INCLUDES}
  GTEST_LDFLAGS:   ${GTEST_LDFLAGS}
  GTEST_LDADD:     ${GTEST_LDADD}
  GTEST_SOURCE:    ${GTEST_SOURCE}
END
else
cat >> config.report << END

Google Test:
  no
END
fi

if test "$enable_benchmark" != "no"; then
cat >> config.report << END

Google Benchmark:
  BENCHMARK_VERSION:   ${BENCHMARK_VERSION}
  BENCHMARK_CPPFLAGS:  ${BENCHMARK_CPPFLAGS}
  BENCHMARK_INCLUDES:  ${BENCHMARK_INCLUDES}
  BENCHMARK_LDFLAGS:   ${BENCHMARK_LDFLAGS}
  BENCHMARK_LDADD:     ${BENCHMARK_LDADD}
  BENCHMARK_SOURCE:    ${BENCHMARK_SOURCE}
END
else
cat >> config.report << END

Google Benchmark:
  no
END
fi

if test "$FREERADIUS_INCLUDE" != ""; then
cat >> config.report << END

FreeRADIUS client:
  FREERADIUS_INCLUDE:    ${FREERADIUS_INCLUDE}
  FREERADIUS_LIB:        ${FREERADIUS_LIB}
  FREERADIUS_DICTIONARY: ${FREERADIUS_DICTIONARY}
END
fi

cat >> config.report << END

Developer:
  Enable Debugging:       $debug_enabled
  Google Tests:           $enable_gtest
  Valgrind:               $found_valgrind
  C++ Code Coverage:      $USE_LCOV
  Logger checks:          $enable_logger_checks
  Generate Documentation: $enable_generate_docs
  Parser Generation:      $enable_generate_parser
  Kea-shell:              $enable_shell

END

cat config.report
cat <<EOF

  Now you can type "make" to build Kea. Note that if you intend to
  run "make check", you must run "make" first as some files need to be
  generated by "make" before "make check" can be run.

  When running "make install" do not use any form of parallel or job
  server options (such as GNU make's -j option). Doing so may cause
  errors.

EOF