Codebase list czmq / HEAD configure.ac
HEAD

Tree @HEAD (Download .tar.gz)

configure.ac @HEADraw · 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
################################################################################
#  THIS FILE IS 100% GENERATED BY ZPROJECT; DO NOT EDIT EXCEPT EXPERIMENTALLY  #
#  Read the zproject/README.md for information about making permanent changes. #
################################################################################
# Note: if your project needs a customized configure script (compared to
# the code below 100% generated by zproject), please check first if your
# use-case can be handled by acinclude.m4 support in zproject_autotools.gsl
# (to AC_DEFUN an AX_PROJECT_LOCAL_HOOK, AX_PROJECT_LOCAL_HOOK_CONFIGVARS
# and/or AX_PROJECT_LOCAL_HOOK_FINAL) so you can avoid changing this file
# which would complicate re-generation of your project in the future.

#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_PREREQ(2.61)
#
AC_INIT([czmq],[4.2.1],[zeromq-dev@lists.zeromq.org])

AC_CONFIG_AUX_DIR(config)
AC_CONFIG_MACRO_DIR(config)
AC_CONFIG_HEADERS([src/platform.h])
AM_INIT_AUTOMAKE([subdir-objects tar-ustar dist-zip foreign])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

# This defines PACKAGE_VERSION_... in src/platform.h
PV_MAJOR=`echo $PACKAGE_VERSION | cut -d . -f 1`
PV_MINOR=`echo $PACKAGE_VERSION | cut -d . -f 2`
PV_PATCH=`echo $PACKAGE_VERSION | cut -d . -f 3`
AC_DEFINE_UNQUOTED([PACKAGE_VERSION_MAJOR],[$PV_MAJOR],
    [CZMQ major version])
AC_DEFINE_UNQUOTED([PACKAGE_VERSION_MINOR],[$PV_MINOR],
    [CZMQ minor version])
AC_DEFINE_UNQUOTED([PACKAGE_VERSION_PATCH],[$PV_PATCH],
    [CZMQ patchlevel])
# This lets us use PACKAGE_VERSION in Makefiles
AC_SUBST(PACKAGE_VERSION)

#
# Libtool -version-info (ABI version)
#
# Currently 6:1:2 ("stable"). Don't change this unless you
# know exactly what you're doing and have read and understand
# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
#
# libczmq -version-info
LTVER="6:1:2"
AC_SUBST(LTVER)

# building in a subdirectory?
AM_CONDITIONAL([USING_VPATH], [test "x${srcdir}" != "x."])

# Capture c flags
CZMQ_ORIG_CFLAGS="${CFLAGS:-none}"

# Checks for programs
AC_PROG_CC
AC_PROG_CC_C99
AM_PROG_CC_C_O
AC_LIBTOOL_WIN32_DLL
AC_PROG_LIBTOOL
AC_PROG_SED
AC_PROG_AWK
PKG_PROG_PKG_CONFIG

# Check endianess of the system
AC_C_BIGENDIAN

# Optional project-local hook (acinclude.m4, add AC_DEFUN([AX_PROJECT_LOCAL_HOOK], [whatever]) )
ifdef([AX_PROJECT_LOCAL_HOOK],
    [AX_PROJECT_LOCAL_HOOK])

# See if cppcheck is in PATH; this variable unblocks the "cppcheck" recipe
# (note that "make cppcheck.xml" can be used - and perhaps fail - regardless)
AC_CHECK_PROG([WITH_CPPCHECK], [cppcheck], [true], [false])
AM_CONDITIONAL(WITH_CPPCHECK, $WITH_CPPCHECK)

# Code coverage
AC_MSG_CHECKING([whether to enable GCov])
AC_ARG_WITH(gcov, [AS_HELP_STRING([--with-gcov=yes/no],
                  [With GCC Code Coverage reporting])],
                  [CZMQ_GCOV="$withval"])

if test "x${CZMQ_GCOV}" == "xyes"; then
    CFLAGS="-O0 -g -fprofile-arcs -ftest-coverage"

    if test "x${CZMQ_ORIG_CFLAGS}" != "xnone"; then
        CFLAGS="${CFLAGS} ${CZMQ_ORIG_CFLAGS}"
    fi
    AM_CONDITIONAL(WITH_GCOV, true)
    AC_MSG_RESULT([yes])
else
    AM_CONDITIONAL(WITH_GCOV, false)
    AC_MSG_RESULT([no])
fi

# Memory mis-use detection
AC_MSG_CHECKING([whether to enable ASan])
AC_ARG_ENABLE(address-sanitizer, [AS_HELP_STRING([--enable-address-sanitizer=yes/no],
                  [Build with GCC Address Sanitizer instrumentation])],
                  [CZMQ_ASAN="$enableval"])

if test "x${CZMQ_ASAN}" == "xyes"; then
    CFLAGS="${CFLAGS} -fsanitize=address"
    CXXFLAGS="${CXXFLAGS} -fsanitize=address"

    AM_CONDITIONAL(ENABLE_ASAN, true)
    AC_MSG_RESULT([yes])
else
    AM_CONDITIONAL(ENABLE_ASAN, false)
    AC_MSG_RESULT([no])
fi

# Install Python Bindings
AC_MSG_CHECKING([whether to install Python bindings])

AC_ARG_ENABLE([bindings-python],
    AS_HELP_STRING([--enable-bindings-python=yes/no],
        [Install Python Bindings [default=no]]),
    [ZPROJECT_BINDINGS_PYTHON=$enableval],
    [ZPROJECT_BINDINGS_PYTHON=no])

if test "x$ZPROJECT_BINDINGS_PYTHON" == "xyes"; then
    AM_CONDITIONAL(ENABLE_BINDINGS_PYTHON, true)
    AC_MSG_RESULT([yes])
else
    AM_CONDITIONAL(ENABLE_BINDINGS_PYTHON, false)
    AC_MSG_RESULT([no])
fi

# See if clang-format is in PATH; the result unblocks the relevant recipes
WITH_CLANG_FORMAT=""
AS_IF([test x"$CLANG_FORMAT" = x],
    [AC_PATH_PROG([CLANG_FORMAT], [clang-format], [])],
    [AC_CHECK_PROG([WITH_CLANG_FORMAT], [$CLANG_FORMAT], [true], [fail])])
AS_IF([test x"$CLANG_FORMAT" != x && test x"$WITH_CLANG_FORMAT" = x],
    [AS_IF([test -x "$CLANG_FORMAT"],
        [WITH_CLANG_FORMAT=true],
        [AC_CHECK_PROG([WITH_CLANG_FORMAT], [$CLANG_FORMAT], [true], [false])])])
AS_IF([test "$WITH_CLANG_FORMAT" = fail],
    [AC_MSG_ERROR([Caller explicitly referenced CLANG_FORMAT=$CLANG_FORMAT which was not found])])
AM_CONDITIONAL([WITH_CLANG_FORMAT], [$WITH_CLANG_FORMAT])

# Set pkgconfigdir
AC_ARG_WITH([pkgconfigdir], AS_HELP_STRING([--with-pkgconfigdir=PATH],
    [Path to the pkgconfig directory [[LIBDIR/pkgconfig]]]),
    [pkgconfigdir="$withval"], [pkgconfigdir='${libdir}/pkgconfig'])
AC_SUBST([pkgconfigdir])

# Use the provided pkgconfigdir not only to write our pkg-config data,
# but also as an additional location to look for other packages metadata.
AS_IF([test -n "${pkgconfigdir}" -a -d "${pkgconfigdir}"],
    [AS_IF([test -z "${PKG_CONFIG_PATH}"],
        [PKG_CONFIG_PATH="${pkgconfigdir}"],
        [PKG_CONFIG_PATH="${pkgconfigdir}:${PKG_CONFIG_PATH}"])
     export PKG_CONFIG_PATH
    ])

# Will be used to add flags to pkg-config useful when apps want to statically link
PKGCFG_LIBS_PRIVATE=""
PKGCFG_NAMES_PRIVATE=""

# Archive user supplied flags
PREVIOUS_CFLAGS="${CFLAGS}"
PREVIOUS_LIBS="${LIBS}"


was_libzmq_check_lib_detected=no

search_libzmq="yes"

AC_ARG_WITH([libzmq],
    [
        AS_HELP_STRING([--with-libzmq],
        [yes or no. Optionally specify libzmq prefix (directory where its include/ and lib/ are located), but that is only used if pkgconfig metadata is not found first])
    ],
    [
        search_libzmq="yes"
    ],
    [
        search_libzmq="yes"
    ])
AS_CASE([x"${with_libzmq}"],
    [xyes], [search_libzmq="yes"],
    [xno],  [search_libzmq="no"])

dnl We do not abort right now, because the maintainer/developer may have
dnl something particular in mind, e.g. to build just parts of a project.
AS_IF([test x"${search_libzmq}" = xno],
    [AC_MSG_WARN([Required dependency on libzmq was explicitly disabled during configuration by '--with-libzmq=no'; subsequent full build of czmq may fail])])

AS_IF([test x"${search_libzmq}" = xyes], [
    # Archive previously detected and supplied flags
    PRE_SEARCH_CFLAGS="${CFLAGS}"
    PRE_SEARCH_LIBS="${LIBS}"

    found_pkgconfig=""
    PKG_CHECK_MODULES([libzmq], [libzmq >= 0.0.0],
    [
        was_libzmq_check_lib_detected=pkgcfg
        found_pkgconfig="libzmq"
    ],
    [
        AC_MSG_NOTICE([Package libzmq not found; falling back to defined compilability tests])

        libzmq_synthetic_cflags=""
        libzmq_synthetic_libs="-lzmq"

        if test -n "${with_libzmq}" && test x"${with_libzmq}" != xyes && test x"${with_libzmq}" != xno; then
            if test -r "${with_libzmq}/include/zmq.h"; then
                libzmq_synthetic_cflags="-I${with_libzmq}/include"
                libzmq_synthetic_libs="-L${with_libzmq}/lib -lzmq"
            else
            AC_MSG_ERROR([Header file ${with_libzmq}/include/zmq.h was not found. Please check libzmq prefix])
            fi
        else
            AC_CHECK_HEADER([zmq.h], [],
            AC_MSG_ERROR([Header file zmq.h was not found in default search paths])
                )
        fi

        AC_CHECK_LIB([zmq], [zmq_init],
            [
                was_libzmq_check_lib_detected=yes
                PKGCFG_LIBS_PRIVATE="$PKGCFG_LIBS_PRIVATE -lzmq"
            ],
            [AC_MSG_ERROR([cannot link with -lzmq, install libzmq])])
    ])

dnl END of PKG_CHECK_MODULES and/or direct tests for libzmq
    AS_CASE(["x${was_libzmq_check_lib_detected}"],
        [xpkgcfg], [
                PKGCFG_NAMES_PRIVATE="$PKGCFG_NAMES_PRIVATE ${found_pkgconfig}"
                CFLAGS="${libzmq_CFLAGS} ${CFLAGS}"
                LIBS="${libzmq_LIBS} ${LIBS}"
            ],
        [xyes], [
                CFLAGS="${libzmq_synthetic_cflags} ${CFLAGS}"
                LDFLAGS="${libzmq_synthetic_libs} ${LDFLAGS}"
                LIBS="${libzmq_synthetic_libs} ${LIBS}"

                AC_SUBST([libzmq_CFLAGS],[${libzmq_synthetic_cflags}])
                AC_SUBST([libzmq_LIBS],[${libzmq_synthetic_libs}])
            ],
        [xno], [
            AC_MSG_ERROR([Cannot find pkg-config metadata for libzmq 0.0.0 or higher])
    ])
])
dnl END of enabled attempts to search for libzmq


was_uuid_check_lib_detected=no

search_uuid="no"

AC_ARG_WITH([uuid],
    [
        AS_HELP_STRING([--with-uuid],
        [yes or no. Optionally specify uuid prefix (directory where its include/ and lib/ are located), but that is only used if pkgconfig metadata is not found first])
    ],
    [
        search_uuid="yes"
    ],
    [
        search_uuid="yes"
    ])
AS_CASE([x"${with_uuid}"],
    [xyes], [search_uuid="yes"],
    [xno],  [search_uuid="no"])


AS_IF([test x"${search_uuid}" = xyes], [
    # Archive previously detected and supplied flags
    PRE_SEARCH_CFLAGS="${CFLAGS}"
    PRE_SEARCH_LIBS="${LIBS}"

    found_pkgconfig=""
    PKG_CHECK_MODULES([uuid], [uuid >= 0.0.0],
    [
        AC_DEFINE(HAVE_UUID, 1, [The optional uuid library is to be used])
        was_uuid_check_lib_detected=pkgcfg
        found_pkgconfig="uuid"
    ],
    [
        AC_MSG_NOTICE([Package uuid not found; falling back to defined compilability tests])

        uuid_synthetic_cflags=""
        uuid_synthetic_libs="-luuid"

        if test -n "${with_uuid}" && test x"${with_uuid}" != xyes && test x"${with_uuid}" != xno; then
            if test -r "${with_uuid}/include/uuid/uuid.h"; then
                uuid_synthetic_cflags="-I${with_uuid}/include"
                uuid_synthetic_libs="-L${with_uuid}/lib -luuid"
            else
            AC_MSG_WARN([Header file ${with_uuid}/include/uuid/uuid.h was not found. Please check uuid prefix])
            fi
        else
            AC_CHECK_HEADER([uuid/uuid.h], [],
            AC_MSG_WARN([Header file uuid/uuid.h was not found in default search paths])
                )
        fi

        AC_CHECK_LIB([uuid], [uuid_generate],
            [
                was_uuid_check_lib_detected=yes
                PKGCFG_LIBS_PRIVATE="$PKGCFG_LIBS_PRIVATE -luuid"
                AC_DEFINE(HAVE_UUID, 1, [The optional uuid library is to be used (as -luuid)])
            ],
            [])
    ])

dnl END of PKG_CHECK_MODULES and/or direct tests for uuid
    AS_CASE(["x${was_uuid_check_lib_detected}"],
        [xpkgcfg], [
                PKGCFG_NAMES_PRIVATE="$PKGCFG_NAMES_PRIVATE ${found_pkgconfig}"
                CFLAGS="${uuid_CFLAGS} ${CFLAGS}"
                LIBS="${uuid_LIBS} ${LIBS}"
            ],
        [xyes], [
                CFLAGS="${uuid_synthetic_cflags} ${CFLAGS}"
                LDFLAGS="${uuid_synthetic_libs} ${LDFLAGS}"
                LIBS="${uuid_synthetic_libs} ${LIBS}"

                AC_SUBST([uuid_CFLAGS],[${uuid_synthetic_cflags}])
                AC_SUBST([uuid_LIBS],[${uuid_synthetic_libs}])
            ],
        [xno], [
            AC_MSG_WARN([Cannot find pkg-config metadata for uuid 0.0.0 or higher])
    ])
])
dnl END of enabled attempts to search for uuid


was_systemd_check_lib_detected=no

search_libsystemd="no"

AC_ARG_WITH([libsystemd],
    [
        AS_HELP_STRING([--with-libsystemd],
        [yes or no. Optionally specify libsystemd prefix (directory where its include/ and lib/ are located), but that is only used if pkgconfig metadata is not found first])
    ],
    [
        search_libsystemd="yes"
    ],
    [
        search_libsystemd="yes"
    ])
AS_CASE([x"${with_libsystemd}"],
    [xyes], [search_libsystemd="yes"],
    [xno],  [search_libsystemd="no"])


AS_IF([test x"${search_libsystemd}" = xyes], [
    # Archive previously detected and supplied flags
    PRE_SEARCH_CFLAGS="${CFLAGS}"
    PRE_SEARCH_LIBS="${LIBS}"

    found_pkgconfig=""
    PKG_CHECK_MODULES([systemd], [libsystemd >= 200.0.0],
    [
        AC_DEFINE(HAVE_LIBSYSTEMD, 1, [The optional libsystemd library is to be used])
        was_systemd_check_lib_detected=pkgcfg
        found_pkgconfig="libsystemd"
    ],
    [
        AC_MSG_NOTICE([Package libsystemd not found with needed constraints; falling back to defined compilability tests])

        systemd_synthetic_cflags=""
        systemd_synthetic_libs="-lsystemd"

        if test -n "${with_libsystemd}" && test x"${with_libsystemd}" != xyes && test x"${with_libsystemd}" != xno; then
            if test -r "${with_libsystemd}/include/systemd/sd-daemon.h"; then
                systemd_synthetic_cflags="-I${with_libsystemd}/include"
                systemd_synthetic_libs="-L${with_libsystemd}/lib -lsystemd"
            else
            AC_MSG_WARN([Header file ${with_libsystemd}/include/systemd/sd-daemon.h was not found. Please check libsystemd prefix])
            fi
        else
            AC_CHECK_HEADER([systemd/sd-daemon.h], [],
            AC_MSG_WARN([Header file systemd/sd-daemon.h was not found in default search paths])
                )
        fi

        AC_CHECK_LIB([libsystemd], [sd_listen_fds],
            [
                was_systemd_check_lib_detected=yes
                PKGCFG_LIBS_PRIVATE="$PKGCFG_LIBS_PRIVATE -lsystemd"
                AC_DEFINE(HAVE_LIBSYSTEMD, 1, [The optional libsystemd library is to be used (as -lsystemd)])
            ],
            [])
    ])

dnl END of PKG_CHECK_MODULES and/or direct tests for libsystemd
    AS_CASE(["x${was_systemd_check_lib_detected}"],
        [xpkgcfg], [
                PKGCFG_NAMES_PRIVATE="$PKGCFG_NAMES_PRIVATE ${found_pkgconfig} >= 200.0.0"
                CFLAGS="${systemd_CFLAGS} ${CFLAGS}"
                LIBS="${systemd_LIBS} ${LIBS}"
            ],
        [xyes], [
                CFLAGS="${systemd_synthetic_cflags} ${CFLAGS}"
                LDFLAGS="${systemd_synthetic_libs} ${LDFLAGS}"
                LIBS="${systemd_synthetic_libs} ${LIBS}"

                AC_SUBST([systemd_CFLAGS],[${systemd_synthetic_cflags}])
                AC_SUBST([systemd_LIBS],[${systemd_synthetic_libs}])
            ],
        [xno], [
            AC_MSG_WARN([Cannot find pkg-config metadata for libsystemd 200.0.0 or higher])
    ])
])
dnl END of enabled attempts to search for libsystemd


was_lz4_check_lib_detected=no

search_liblz4="no"

AC_ARG_WITH([liblz4],
    [
        AS_HELP_STRING([--with-liblz4],
        [yes or no. Optionally specify liblz4 prefix (directory where its include/ and lib/ are located), but that is only used if pkgconfig metadata is not found first])
    ],
    [
        search_liblz4="yes"
    ],
    [
        search_liblz4="yes"
    ])
AS_CASE([x"${with_liblz4}"],
    [xyes], [search_liblz4="yes"],
    [xno],  [search_liblz4="no"])


AS_IF([test x"${search_liblz4}" = xyes], [
    # Archive previously detected and supplied flags
    PRE_SEARCH_CFLAGS="${CFLAGS}"
    PRE_SEARCH_LIBS="${LIBS}"

    found_pkgconfig=""
    PKG_CHECK_MODULES([lz4], [liblz4 >= 0.0.0],
    [
        AC_DEFINE(HAVE_LIBLZ4, 1, [The optional liblz4 library is to be used])
        was_lz4_check_lib_detected=pkgcfg
        found_pkgconfig="liblz4"
    ],
    [
        AC_MSG_NOTICE([Package liblz4 not found; falling back to defined compilability tests])

        lz4_synthetic_cflags=""
        lz4_synthetic_libs="-llz4"

        if test -n "${with_liblz4}" && test x"${with_liblz4}" != xyes && test x"${with_liblz4}" != xno; then
            if test -r "${with_liblz4}/include/lz4.h"; then
                lz4_synthetic_cflags="-I${with_liblz4}/include"
                lz4_synthetic_libs="-L${with_liblz4}/lib -llz4"
            else
            AC_MSG_WARN([Header file ${with_liblz4}/include/lz4.h was not found. Please check liblz4 prefix])
            fi
        else
            AC_CHECK_HEADER([lz4.h], [],
            AC_MSG_WARN([Header file lz4.h was not found in default search paths])
                )
        fi

        AC_CHECK_LIB([lz4], [LZ4_decompress_safe],
            [
                was_lz4_check_lib_detected=yes
                PKGCFG_LIBS_PRIVATE="$PKGCFG_LIBS_PRIVATE -llz4"
                AC_DEFINE(HAVE_LIBLZ4, 1, [The optional liblz4 library is to be used (as -llz4)])
            ],
            [])
    ])

dnl END of PKG_CHECK_MODULES and/or direct tests for liblz4
    AS_CASE(["x${was_lz4_check_lib_detected}"],
        [xpkgcfg], [
                PKGCFG_NAMES_PRIVATE="$PKGCFG_NAMES_PRIVATE ${found_pkgconfig}"
                CFLAGS="${lz4_CFLAGS} ${CFLAGS}"
                LIBS="${lz4_LIBS} ${LIBS}"
            ],
        [xyes], [
                CFLAGS="${lz4_synthetic_cflags} ${CFLAGS}"
                LDFLAGS="${lz4_synthetic_libs} ${LDFLAGS}"
                LIBS="${lz4_synthetic_libs} ${LIBS}"

                AC_SUBST([lz4_CFLAGS],[${lz4_synthetic_cflags}])
                AC_SUBST([lz4_LIBS],[${lz4_synthetic_libs}])
            ],
        [xno], [
            AC_MSG_WARN([Cannot find pkg-config metadata for liblz4 0.0.0 or higher])
    ])
])
dnl END of enabled attempts to search for liblz4


was_libcurl_check_lib_detected=no

search_libcurl="no"

AC_ARG_WITH([libcurl],
    [
        AS_HELP_STRING([--with-libcurl],
        [yes or no. Optionally specify libcurl prefix (directory where its include/ and lib/ are located), but that is only used if pkgconfig metadata is not found first])
    ],
    [
        search_libcurl="yes"
    ],
    [
        search_libcurl="yes"
    ])
AS_CASE([x"${with_libcurl}"],
    [xyes], [search_libcurl="yes"],
    [xno],  [search_libcurl="no"])


AS_IF([test x"${search_libcurl}" = xyes], [
    # Archive previously detected and supplied flags
    PRE_SEARCH_CFLAGS="${CFLAGS}"
    PRE_SEARCH_LIBS="${LIBS}"

    found_pkgconfig=""
    PKG_CHECK_MODULES([libcurl], [libcurl >= 7.28.0],
    [
        AC_DEFINE(HAVE_LIBCURL, 1, [The optional libcurl library is to be used])
        was_libcurl_check_lib_detected=pkgcfg
        found_pkgconfig="libcurl"
    ],
    [
        AC_MSG_NOTICE([Package libcurl not found with needed constraints; falling back to defined compilability tests])

        libcurl_synthetic_cflags=""
        libcurl_synthetic_libs="-lcurl"

        if test -n "${with_libcurl}" && test x"${with_libcurl}" != xyes && test x"${with_libcurl}" != xno; then
            if test -r "${with_libcurl}/include/curl/curl.h"; then
                libcurl_synthetic_cflags="-I${with_libcurl}/include"
                libcurl_synthetic_libs="-L${with_libcurl}/lib -lcurl"
            else
            AC_MSG_WARN([Header file ${with_libcurl}/include/curl/curl.h was not found. Please check libcurl prefix])
            fi
        else
            AC_CHECK_HEADER([curl/curl.h], [],
            AC_MSG_WARN([Header file curl/curl.h was not found in default search paths])
                )
        fi

        AC_CHECK_LIB([curl], [curl_easy_init],
            [
                was_libcurl_check_lib_detected=yes
                PKGCFG_LIBS_PRIVATE="$PKGCFG_LIBS_PRIVATE -lcurl"
                AC_DEFINE(HAVE_LIBCURL, 1, [The optional libcurl library is to be used (as -lcurl)])
            ],
            [])
    ])

dnl END of PKG_CHECK_MODULES and/or direct tests for libcurl
    AS_CASE(["x${was_libcurl_check_lib_detected}"],
        [xpkgcfg], [
                PKGCFG_NAMES_PRIVATE="$PKGCFG_NAMES_PRIVATE ${found_pkgconfig} >= 7.28.0"
                CFLAGS="${libcurl_CFLAGS} ${CFLAGS}"
                LIBS="${libcurl_LIBS} ${LIBS}"
            ],
        [xyes], [
                CFLAGS="${libcurl_synthetic_cflags} ${CFLAGS}"
                LDFLAGS="${libcurl_synthetic_libs} ${LDFLAGS}"
                LIBS="${libcurl_synthetic_libs} ${LIBS}"

                AC_SUBST([libcurl_CFLAGS],[${libcurl_synthetic_cflags}])
                AC_SUBST([libcurl_LIBS],[${libcurl_synthetic_libs}])
            ],
        [xno], [
            AC_MSG_WARN([Cannot find pkg-config metadata for libcurl 7.28.0 or higher])
    ])
])
dnl END of enabled attempts to search for libcurl


was_nss_check_lib_detected=no

search_nss="no"

AC_ARG_WITH([nss],
    [
        AS_HELP_STRING([--with-nss],
        [yes or no. Optionally specify nss prefix (directory where its include/ and lib/ are located), but that is only used if pkgconfig metadata is not found first])
    ],
    [
        search_nss="yes"
    ],
    [
        search_nss="yes"
    ])
AS_CASE([x"${with_nss}"],
    [xyes], [search_nss="yes"],
    [xno],  [search_nss="no"])


AS_IF([test x"${search_nss}" = xyes], [
    # Archive previously detected and supplied flags
    PRE_SEARCH_CFLAGS="${CFLAGS}"
    PRE_SEARCH_LIBS="${LIBS}"

    found_pkgconfig=""
    PKG_CHECK_MODULES([nss], [nss >= 0.0.0],
    [
        AC_DEFINE(HAVE_NSS, 1, [The optional nss library is to be used])
        was_nss_check_lib_detected=pkgcfg
        found_pkgconfig="nss"
    ],
    [
        AC_MSG_NOTICE([Package nss not found; falling back to defined compilability tests])

        nss_synthetic_cflags=""
        nss_synthetic_libs="-lnss"

        if test -n "${with_nss}" && test x"${with_nss}" != xyes && test x"${with_nss}" != xno; then
            if test -r "${with_nss}/include/sechash.h"; then
                nss_synthetic_cflags="-I${with_nss}/include"
                nss_synthetic_libs="-L${with_nss}/lib -lnss"
            else
            AC_MSG_WARN([Header file ${with_nss}/include/sechash.h was not found. Please check nss prefix])
            fi
        else
            AC_CHECK_HEADER([sechash.h], [],
            AC_MSG_WARN([Header file sechash.h was not found in default search paths])
                )
        fi

        AC_CHECK_LIB([nss], [HASH_Create],
            [
                was_nss_check_lib_detected=yes
                PKGCFG_LIBS_PRIVATE="$PKGCFG_LIBS_PRIVATE -lnss"
                AC_DEFINE(HAVE_NSS, 1, [The optional nss library is to be used (as -lnss)])
            ],
            [])
    ])

dnl END of PKG_CHECK_MODULES and/or direct tests for nss
    AS_CASE(["x${was_nss_check_lib_detected}"],
        [xpkgcfg], [
                PKGCFG_NAMES_PRIVATE="$PKGCFG_NAMES_PRIVATE ${found_pkgconfig}"
                CFLAGS="${nss_CFLAGS} ${CFLAGS}"
                LIBS="${nss_LIBS} ${LIBS}"
            ],
        [xyes], [
                CFLAGS="${nss_synthetic_cflags} ${CFLAGS}"
                LDFLAGS="${nss_synthetic_libs} ${LDFLAGS}"
                LIBS="${nss_synthetic_libs} ${LIBS}"

                AC_SUBST([nss_CFLAGS],[${nss_synthetic_cflags}])
                AC_SUBST([nss_LIBS],[${nss_synthetic_libs}])
            ],
        [xno], [
            AC_MSG_WARN([Cannot find pkg-config metadata for nss 0.0.0 or higher])
    ])
])
dnl END of enabled attempts to search for nss


was_libmicrohttpd_check_lib_detected=no

search_libmicrohttpd="no"

AC_ARG_WITH([libmicrohttpd],
    [
        AS_HELP_STRING([--with-libmicrohttpd],
        [yes or no. Optionally specify libmicrohttpd prefix (directory where its include/ and lib/ are located), but that is only used if pkgconfig metadata is not found first])
    ],
    [
        search_libmicrohttpd="yes"
    ],
    [
        search_libmicrohttpd="yes"
    ])
AS_CASE([x"${with_libmicrohttpd}"],
    [xyes], [search_libmicrohttpd="yes"],
    [xno],  [search_libmicrohttpd="no"])


AS_IF([test x"${search_libmicrohttpd}" = xyes], [
    # Archive previously detected and supplied flags
    PRE_SEARCH_CFLAGS="${CFLAGS}"
    PRE_SEARCH_LIBS="${LIBS}"

    found_pkgconfig=""
    PKG_CHECK_MODULES([libmicrohttpd], [libmicrohttpd >= 0.0.0],
    [
        AC_DEFINE(HAVE_LIBMICROHTTPD, 1, [The optional libmicrohttpd library is to be used])
        was_libmicrohttpd_check_lib_detected=pkgcfg
        found_pkgconfig="libmicrohttpd"
    ],
    [
        AC_MSG_NOTICE([Package libmicrohttpd not found; falling back to defined compilability tests])

        libmicrohttpd_synthetic_cflags=""
        libmicrohttpd_synthetic_libs="-lmicrohttpd"

        if test -n "${with_libmicrohttpd}" && test x"${with_libmicrohttpd}" != xyes && test x"${with_libmicrohttpd}" != xno; then
            if test -r "${with_libmicrohttpd}/include/microhttpd.h"; then
                libmicrohttpd_synthetic_cflags="-I${with_libmicrohttpd}/include"
                libmicrohttpd_synthetic_libs="-L${with_libmicrohttpd}/lib -lmicrohttpd"
            else
            AC_MSG_WARN([Header file ${with_libmicrohttpd}/include/microhttpd.h was not found. Please check libmicrohttpd prefix])
            fi
        else
            AC_CHECK_HEADER([microhttpd.h], [],
            AC_MSG_WARN([Header file microhttpd.h was not found in default search paths])
                )
        fi

        AC_CHECK_LIB([microhttpd], [MHD_start_daemon],
            [
                was_libmicrohttpd_check_lib_detected=yes
                PKGCFG_LIBS_PRIVATE="$PKGCFG_LIBS_PRIVATE -lmicrohttpd"
                AC_DEFINE(HAVE_LIBMICROHTTPD, 1, [The optional libmicrohttpd library is to be used (as -lmicrohttpd)])
            ],
            [])
    ])

dnl END of PKG_CHECK_MODULES and/or direct tests for libmicrohttpd
    AS_CASE(["x${was_libmicrohttpd_check_lib_detected}"],
        [xpkgcfg], [
                PKGCFG_NAMES_PRIVATE="$PKGCFG_NAMES_PRIVATE ${found_pkgconfig}"
                CFLAGS="${libmicrohttpd_CFLAGS} ${CFLAGS}"
                LIBS="${libmicrohttpd_LIBS} ${LIBS}"
            ],
        [xyes], [
                CFLAGS="${libmicrohttpd_synthetic_cflags} ${CFLAGS}"
                LDFLAGS="${libmicrohttpd_synthetic_libs} ${LDFLAGS}"
                LIBS="${libmicrohttpd_synthetic_libs} ${LIBS}"

                AC_SUBST([libmicrohttpd_CFLAGS],[${libmicrohttpd_synthetic_cflags}])
                AC_SUBST([libmicrohttpd_LIBS],[${libmicrohttpd_synthetic_libs}])
            ],
        [xno], [
            AC_MSG_WARN([Cannot find pkg-config metadata for libmicrohttpd 0.0.0 or higher])
    ])
])
dnl END of enabled attempts to search for libmicrohttpd


CFLAGS="${PREVIOUS_CFLAGS}"
LIBS="${PREVIOUS_LIBS}"

AC_SUBST(pkg_config_libs_private, $PKGCFG_LIBS_PRIVATE)
AC_SUBST(pkg_config_names_private, $PKGCFG_NAMES_PRIVATE)

# Platform specific checks
czmq_on_mingw32="no"
czmq_on_cygwin="no"
czmq_on_android="no"
czmq_on_linux="no"
czmq_on_gnu="no"

# Host specific checks
AC_CANONICAL_HOST

# Man pages are built/installed if asciidoc and xmlto are present
#   --with-docs=no overrides this
AC_ARG_WITH([docs],
    AS_HELP_STRING([--with-docs],
        [Build and install man pages [default=yes]]),
    [with_docs=$withval])

if test "x$with_docs" = "xno"; then
    czmq_build_doc="no"
    czmq_install_man="no"
else
    # Determine whether or not documentation should be built and installed.
    czmq_build_doc="yes"
    czmq_install_man="yes"

    # Check for asciidoc and xmlto and don't build the docs if these are not installed.
    AC_CHECK_PROG(czmq_have_asciidoc, asciidoc, yes, no)
    AC_CHECK_PROG(czmq_have_xmlto, xmlto, yes, no)
    if test "x$czmq_have_asciidoc" = "xno" -o "x$czmq_have_xmlto" = "xno"; then
        if test "x$with_docs" = "xyes" ; then
            AC_MSG_ERROR([Build with docs was explicitly requested, but tools are not available])
        fi
        czmq_build_doc="no"
        # Tarballs built with 'make dist' ship with prebuilt documentation.
        if ! test -f doc/czmq.7; then
            czmq_install_man="no"
            AC_MSG_WARN([You are building an unreleased version of CZMQ and asciidoc or xmlto are not installed.])
            AC_MSG_WARN([Documentation will not be built and manual pages will not be installed.])
        fi
    fi
fi
AC_MSG_CHECKING([whether to build documentation])
AC_MSG_RESULT([$czmq_build_doc])
AC_MSG_CHECKING([whether to install manpages])
AC_MSG_RESULT([$czmq_install_man])

# Set some default features required by libczmq code.
CPPFLAGS="-DCZMQ_INTERNAL_BUILD -D_REENTRANT -D_THREAD_SAFE $CPPFLAGS"

# OS-specific tests
case "${host_os}" in
    *linux*)
        # Define on Linux to enable all library features
        CPPFLAGS="-D_GNU_SOURCE -DLINUX $CPPFLAGS"
        AC_DEFINE(CZMQ_HAVE_LINUX, 1, [Have Linux OS])
        czmq_on_linux="yes"

        case "${host_os}" in
            *android*)
                AC_DEFINE(CZMQ_HAVE_ANDROID, 1, [Have Android OS])
                czmq_on_android="yes"
            ;;
        esac
        ;;
    *solaris*)
        # Define on Solaris to enable all library features
        CPPFLAGS="-D_PTHREADS $CPPFLAGS"
        # Allow definitions of common OS-provided functions that are not in old standards
        CPPFLAGS="-D__EXTENSIONS__ $CPPFLAGS"
        AC_DEFINE(CZMQ_HAVE_SOLARIS, 1, [Have Solaris OS])
        CFLAGS="${CFLAGS} -lsocket -lssp"
        ;;
    *freebsd*)
        # Define on FreeBSD to enable all library features
        CPPFLAGS="-D__BSD_VISIBLE $CPPFLAGS"
        AC_DEFINE(CZMQ_HAVE_FREEBSD, 1, [Have FreeBSD OS])
        ;;
    *darwin*)
        # Define on Darwin to enable all library features
        CPPFLAGS="-D_DARWIN_C_SOURCE $CPPFLAGS"
        AC_DEFINE(CZMQ_HAVE_OSX, 1, [Have DarwinOSX OS])
        ;;
    *netbsd*)
        # Define on NetBSD to enable all library features
        CPPFLAGS="-D_NETBSD_SOURCE $CPPFLAGS"
        AC_DEFINE(CZMQ_HAVE_NETBSD, 1, [Have NetBSD OS])
        ;;
    *openbsd*)
        # Define on OpenBSD to enable all library features
        CPPFLAGS="-D_BSD_SOURCE $CPPFLAGS"
        AC_DEFINE(CZMQ_HAVE_OPENBSD, 1, [Have OpenBSD OS])
        ;;
    *nto-qnx*)
        AC_DEFINE(CZMQ_HAVE_QNXNTO, 1, [Have QNX Neutrino OS])
        ;;
    *aix*)
        AC_DEFINE(CZMQ_HAVE_AIX, 1, [Have AIX OS])
        ;;
    *hpux*)
        # Define on HP-UX to enable all library features
        CPPFLAGS="-D_POSIX_C_SOURCE=200112L"
        AC_DEFINE(CZMQ_HAVE_HPUX, 1, [Have HPUX OS])
        ;;
    *mingw32*)
        # Disable format error due to incomplete ANSI C
        CFLAGS="-Wno-error=format -Wno-unused-function -Wno-unused-variable -D_XOPEN_SOURCE $CFLAGS"
        CPPFLAGS="-Wno-error=format -Wno-unused-function -Wno-unused-variable -D_XOPEN_SOURCE $CPPFLAGS"
        AC_DEFINE(CZMQ_HAVE_WINDOWS, 1, [Have Windows OS])
        AC_DEFINE(CZMQ_HAVE_MINGW32, 1, [Have MinGW32])
        AC_CHECK_HEADERS(windows.h)
        czmq_on_mingw32="yes"
        czmq_install_man="no"
        ;;
    *mingw64*)
        # Define on MINGW64 to enable all libeary features
        # Disable format error due to incomplete ANSI C
        CFLAGS="-Wno-error=format -Wno-unused-function -Wno-unused-variable -D_XOPEN_SOURCE $CFLAGS"
        CPPFLAGS="-Wno-error=format -Wno-unused-function -Wno-unused-variable -D_XOPEN_SOURCE $CPPFLAGS"
        AC_DEFINE(CZMQ_HAVE_WINDOWS, 1, [Have Windows OS])
        AC_DEFINE(CZMQ_HAVE_MINGW32, 1, [Have MinGW32])
        AC_CHECK_HEADERS(windows.h)
        czmq_on_mingw32="yes"
        czmq_install_man="no"
        ;;
    *cygwin*)
        # Define on Cygwin to enable all library features
        CPPFLAGS="-D_GNU_SOURCE $CPPFLAGS"
        AC_DEFINE(CZMQ_HAVE_CYGWIN, 1, [Have Cygwin])
        czmq_on_cygwin="yes"
        ;;
    gnu*)
        # Define on GNU/Hurd to enable all library features
        if test "x$GXX" = "xyes"; then
            CPPFLAGS="-D_GNU_SOURCE $CPPFLAGS"
        fi
        AC_DEFINE(CZMQ_HAVE_GNU, 1, [Have GNU/Hurd OS])
        czmq_on_gnu="yes"
        ;;
    *)
        AC_MSG_ERROR([unsupported system: ${host_os}])
        ;;
esac

# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(errno.h arpa/inet.h netinet/tcp.h netinet/in.h stddef.h \
                 stdlib.h string.h sys/socket.h sys/time.h unistd.h \
                 limits.h ifaddrs.h)
AC_CHECK_HEADERS([net/if.h net/if_media.h linux/wireless.h], [], [],
[
#ifdef HAVE_SYS_SOCKET_H
# include <sys/socket.h>
#endif
#include <stdint.h>
])

# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_HEADER_TIME
AC_TYPE_UINT32_T
AC_C_VOLATILE
AC_C_BIGENDIAN

# Check for symbols (function, variable, or macro)
AC_CHECK_DECLS([AI_V4MAPPED], [], [], [[#include <czmq.h>]])

AM_CONDITIONAL(ENABLE_SHARED, test "x$enable_shared" = "xyes")
AM_CONDITIONAL(ON_MINGW, test "x$czmq_on_mingw32" = "xyes")
AM_CONDITIONAL(ON_CYGWIN, test "x$czmq_on_cygwin" = "xyes")
AM_CONDITIONAL(ON_ANDROID, test "x$czmq_on_android" = "xyes")
AM_CONDITIONAL(ON_LINUX, test "x$czmq_on_linux" = "xyes")
AM_CONDITIONAL(ON_GNU, test "x$czmq_on_gnu" = "xyes")
AM_CONDITIONAL(INSTALL_MAN, test "x$czmq_install_man" = "xyes")
AM_CONDITIONAL(BUILD_DOC, test "x$czmq_build_doc" = "xyes")

AC_ARG_ENABLE([dist_cmakefiles],
    AS_HELP_STRING([--enable-dist_cmakefiles],
        [Distribute CMakeLists.txt and related files [default depends: on if present and not cross compiling]]),
    [enable_dist_cmakefiles=$enableval],
    [AC_MSG_CHECKING([for presence of CMake recipes])
if test "x$cross_compiling" = "xyes"; then
     enable_dist_cmakefiles=no
else
     AC_CHECK_FILE($srcdir/CMakeLists.txt, [enable_dist_cmakefiles=yes], [enable_dist_cmakefiles=no])
fi
     AC_MSG_RESULT([$enable_dist_cmakefiles])])
AM_CONDITIONAL(ENABLE_DIST_CMAKEFILES, test "x$enable_dist_cmakefiles" = "xyes")

# Check for zmakecert intent
AC_ARG_ENABLE([zmakecert],
    AS_HELP_STRING([--enable-zmakecert],
        [Compile and install 'zmakecert' [default=yes]]),
    [enable_zmakecert=$enableval],
    [enable_zmakecert=yes])

AM_CONDITIONAL([ENABLE_ZMAKECERT], [test x$enable_zmakecert != xno])
AM_COND_IF([ENABLE_ZMAKECERT], [AC_MSG_NOTICE([ENABLE_ZMAKECERT defined])])

# Check for zsp intent
AC_ARG_ENABLE([zsp],
    AS_HELP_STRING([--enable-zsp],
        [Compile 'zsp' in src [default=yes]]),
    [enable_zsp=$enableval],
    [enable_zsp=yes])

AM_CONDITIONAL([ENABLE_ZSP], [test x$enable_zsp != xno])
AM_COND_IF([ENABLE_ZSP], [AC_MSG_NOTICE([ENABLE_ZSP defined])])

# Check for test_randof intent
AC_ARG_ENABLE([test_randof],
    AS_HELP_STRING([--enable-test_randof],
        [Compile 'test_randof' in src [default=yes]]),
    [enable_test_randof=$enableval],
    [enable_test_randof=yes])

AM_CONDITIONAL([ENABLE_TEST_RANDOF], [test x$enable_test_randof != xno])
AM_COND_IF([ENABLE_TEST_RANDOF], [AC_MSG_NOTICE([ENABLE_TEST_RANDOF defined])])

# Check for czmq_selftest intent
AC_ARG_ENABLE([czmq_selftest],
    AS_HELP_STRING([--enable-czmq_selftest],
        [Compile 'czmq_selftest' in src [default=yes]]),
    [enable_czmq_selftest=$enableval],
    [enable_czmq_selftest=yes])

AM_CONDITIONAL([ENABLE_CZMQ_SELFTEST], [test x$enable_czmq_selftest != xno])
AM_COND_IF([ENABLE_CZMQ_SELFTEST], [AC_MSG_NOTICE([ENABLE_CZMQ_SELFTEST defined])])

# Checks for library functions.
AC_TYPE_SIGNAL
AC_CHECK_FUNCS(perror gettimeofday memset getifaddrs)


# enable specific system integration features
if test "x$cross_compiling" = "xyes"; then
    #   Enable draft by default when cross-compiling
    defaultval=yes
else
    # enable draft API by default if we're in a git repository
    # else disable it by default; then allow --enable-drafts=yes/no override
    AC_CHECK_FILE($srcdir/.git, [defaultval=yes],
        [AC_MSG_CHECKING([running under a git repository workspace])
         AS_IF([git rev-parse --show-toplevel 2>/dev/null],
            [defaultval=yes],
            [defaultval=no])
         AC_MSG_RESULT($defaultval)
        ])
fi

AC_ARG_ENABLE([drafts],
    AS_HELP_STRING([--enable-drafts],
        [Build and install draft classes and methods [default=yes]]),
    [enable_drafts=$enableval],
    [enable_drafts=$defaultval])

AM_CONDITIONAL([ENABLE_DRAFTS], [test x$enable_drafts != xno])

if test "x$enable_drafts" = "xyes"; then
    AC_MSG_NOTICE([Building stable and legacy API + draft API])
    AC_DEFINE(CZMQ_BUILD_DRAFT_API, 1, [Provide draft classes and methods])
    AC_SUBST(pkg_config_defines, "-DCZMQ_BUILD_DRAFT_API=1")
else
    AC_MSG_NOTICE([Building stable and legacy API (no draft API)])
    AC_SUBST(pkg_config_defines, "")
fi

AC_ARG_ENABLE([Werror],
    AS_HELP_STRING([--enable-Werror],
        [Add -Wall -Werror to GCC/GXX arguments [default=no; default=auto if nothing specified as the specific argument value]]),
    [AS_IF([test -n "$enableval"], [enable_Werror=$enableval], [enable_Werror=auto])],
    [enable_Werror=no])

# These options are GNU compiler specific.
AS_IF([test "x$enable_Werror" = "xyes" || test "x$enable_Werror" = "xauto"],
    [AS_IF([test -n "$CC"],[AS_IF([$CC --version 2>&1 | grep 'Free Software Foundation' > /dev/null && test "x$GCC" = "xyes"],
        [AC_MSG_NOTICE([Enabling pedantic errors for GNU C])
         CFLAGS="$CFLAGS -pedantic -Wall -Werror -Werror=format-security"],
        [AS_IF([$CC --version 2>&1 | grep 'clang version' > /dev/null],
            [AC_MSG_NOTICE([Enabling pedantic errors for clang C])
             CFLAGS="$CFLAGS -pedantic -Wall -Werror -Werror=format-security"],
            [AC_MSG_NOTICE([Not enabling pedantic errors: compiler not supported by this recipe (not GNU or clang C)])
             AS_IF([test "x$enable_Werror" = "xyes"], [AC_MSG_ERROR([--enable-Werror=yes was requested and can not be satisfied for C: $CC])])
        ])])])
     AS_IF([test -n "$CXX"],[AS_IF([$CXX --version 2>&1 | grep 'Free Software Foundation' > /dev/null && test "x$GCC" = "xyes"],
        [AC_MSG_NOTICE([Enabling pedantic errors for GNU C++])
         CXXFLAGS="$CXXFLAGS -pedantic -Wall -Werror -Werror=format-security"],
        [AS_IF([$CXX --version 2>&1 | grep 'clang version' > /dev/null],
            [AC_MSG_NOTICE([Enabling pedantic errors for clang C++])
             CXXFLAGS="$CXXFLAGS -pedantic -Wall -Werror -Werror=format-security"],
            [AC_MSG_NOTICE([Not enabling pedantic errors: compiler not supported by this recipe (not GNU or clang C++)])
             AS_IF([test "x$enable_Werror" = "xyes"], [AC_MSG_ERROR([--enable-Werror=yes was requested and can not be satisfied for C++: $CXX])])
        ])])])
     AS_IF([test -n "$CPP"],[AS_IF([$CPP --version 2>&1 | grep 'Free Software Foundation' > /dev/null && test "x$GCC" = "xyes"],
        [AC_MSG_NOTICE([Enabling pedantic errors for GNU CPP preprocessor])
         CPPFLAGS="$CPPFLAGS -pedantic -Werror -Wall -Wc++-compat"
        ],
        [AS_IF([$CXX --version 2>&1 | grep 'clang version' > /dev/null],
            [AC_MSG_NOTICE([Enabling pedantic errors for clang CPP preprocessor])
             CPPFLAGS="$CPPFLAGS -pedantic -Werror -Wall -Wc++-compat"
            ],
            [AC_MSG_NOTICE([Not enabling pedantic errors: preprocessor not supported by this recipe (not GNU or clang CPP)])
             AS_IF([test "x$enable_Werror" = "xyes"], [AC_MSG_ERROR([--enable-Werror=yes was requested and can not be satisfied for CPP: $CPP])])
        ])])])
])

# Optional project-local hook to (re-)define some variables that can be used
# in your project files generated from .in templates - in your acinclude.m4,
# add AC_DEFUN([AX_PROJECT_LOCAL_HOOK_CONFIGVARS], [whatever])
ifdef([AX_PROJECT_LOCAL_HOOK_CONFIGVARS],
    [AX_PROJECT_LOCAL_HOOK_CONFIGVARS])

# Specify output files
AC_CONFIG_FILES([Makefile
                 doc/Makefile
                 include/Makefile
                 src/libczmq.pc
                ])


# Optional project-local hook to put some finishing touches in your configure
# script, override something compared to zproject-generated code, etc. - in
# your acinclude.m4, add AC_DEFUN([AX_PROJECT_LOCAL_HOOK_FINAL], [whatever])
ifdef([AX_PROJECT_LOCAL_HOOK_FINAL],
    [AX_PROJECT_LOCAL_HOOK_FINAL])

AC_OUTPUT

# Print configure summary and list make options
AC_DEFUN([AX_SUMMARIZE_ENV],
[
BUILD_USER=${USER}
BUILD_ARCH=${host}
BUILD_HOST=${ac_hostname}
BUILD_DATE=$(date +'%F %H:%M')

AC_DEFINE_UNQUOTED([BUILD_USER],     "${BUILD_USER}",     [The fine user who built the package])
AC_DEFINE_UNQUOTED([BUILD_ARCH],     "${BUILD_ARCH}",     [Architecture of the build host])
AC_DEFINE_UNQUOTED([BUILD_HOST],     "${BUILD_HOST}",     [Build host name])
AC_DEFINE_UNQUOTED([BUILD_DATE],     "${BUILD_DATE}",     [Build date])

AC_SUBST(BUILD_USER)
AC_SUBST(BUILD_ARCH)
AC_SUBST(BUILD_HOST)
AC_SUBST(BUILD_DATE)
AC_SUBST(BUILD_VERSION)
])

AC_DEFUN([AX_SUMMARIZE_CONFIG],
[
echo
echo '##########################################################################'
echo '#                                SUMMARY                                 #'
echo '##########################################################################'
echo
echo Package version............... : $PACKAGE-$VERSION
echo
echo C compiler.................... : $CC
echo C compiler flags.............. : $CFLAGS
echo C++ compiler.................. : $CXX
echo C++ compiler flags............ : $CXXFLAGS
echo Configure date................ : $BUILD_DATE
echo Build architecture............ : $BUILD_ARCH
echo Build docs.................... : $czmq_build_doc
echo Build host.................... : $BUILD_HOST
echo Build user.................... : $USER
echo Draft API..................... : $enable_drafts
echo Python Bindings............... : $ZPROJECT_BINDINGS_PYTHON
echo Install dir................... : $prefix
echo Install man pages............. : $czmq_install_man

echo
echo Help:
echo Use the Draft API \(default = yes\):
echo --enable-drafts=\(yes\|no\)
echo
echo Build the docs and install the man pages \(default = yes\):
echo --with-docs=\(yes\|no\)       *requires asciidoc and xmlto

echo
echo '##########################################################################'

echo
echo Configure complete! Now proceed with:
echo "    - 'make'               compile the project"
echo "    - 'make check'         run the project's selftest"
echo "    - 'make check-<test-name>'    run the project's selftest"
echo "    - 'make install'       install the project to $prefix"
echo "    - 'make bindings       install enabled language bindings (Python, etc)"
echo
echo Further options are:
echo "    - 'make callcheck'     run the project's selftest with valgrind to"
echo "                           check for performance leaks"
echo "    - 'make check-verbose' run the project's selftest in verbose mode"
echo "    - 'make code'          generate code from models in src directory"
echo "                           (requires zproject and zproto)"
echo "    - 'make debug'         run the project's selftest under gdb"
echo "    - 'make memcheck'      run the project's selftest with valgrind to"
echo "                           check for memory leaks"
echo "    - 'make coverage'      generate project's selftest coverage report"
echo "                           expects --with-gcov option for configure"
echo "    - 'make clang-format-check'   check if project sources conform"
echo "                           to style requirements"
echo "    - 'make clang-format'  modify project sources to conform"
echo "                           to style requirements"
echo "    - 'make clang-format-diff'    modify as above and print 'git diff'"
echo
])

AX_SUMMARIZE_ENV
AX_SUMMARIZE_CONFIG
################################################################################
#  THIS FILE IS 100% GENERATED BY ZPROJECT; DO NOT EDIT EXCEPT EXPERIMENTALLY  #
#  Read the zproject/README.md for information about making permanent changes. #
################################################################################