The Tcpdump Group git mirrors - tcpdump/blob - configure.in

   1 dnl @(#) $Header: /tcpdump/master/tcpdump/configure.in,v 1.198 2008-02-05 18:58:19 guy Exp $ (LBL)
   2 dnl
   3 dnl Copyright (c) 1994, 1995, 1996, 1997
   4 dnl     The Regents of the University of California.  All rights reserved.
   5 dnl
   6 dnl Process this file with autoconf to produce a configure script.
   7 dnl
   8
   9 AC_REVISION($Revision: 1.198 $)
  10 AC_PREREQ(2.50)
  11 AC_INIT(tcpdump.c)
  12
  13 AC_CANONICAL_HOST
  14
  15 AC_LBL_C_INIT(V_CCOPT, V_INCLS)
  16 AC_LBL_C_INLINE
  17 AC_C___ATTRIBUTE__
  18 AC_CHECK_HEADERS(fcntl.h rpc/rpcent.h netdnet/dnetdb.h)
  19 AC_CHECK_HEADERS(net/pfvar.h, , , [#include <sys/types.h>
  20 #include <sys/socket.h>
  21 #include <net/if.h>])
  22 if test "$ac_cv_header_net_pfvar_h" = yes; then
  23         LOCALSRC="print-pflog.c $LOCALSRC"
  24 fi
  25 AC_CHECK_HEADERS(netinet/if_ether.h, , , [#include <sys/types.h>
  26 #include <sys/socket.h>])
  27 if test "$ac_cv_header_netinet_if_ether_h" != yes; then
  28         #
  29         # The simple test didn't work.
  30         # Do we need to include <net/if.h> first?
  31         # Unset ac_cv_header_netinet_if_ether_h so we don't
  32         # treat the previous failure as a cached value and
  33         # suppress the next test.
  34         #
  35         AC_MSG_NOTICE([Rechecking with some additional includes])
  36         unset ac_cv_header_netinet_if_ether_h
  37         AC_CHECK_HEADERS(netinet/if_ether.h, , , [#include <sys/types.h>
  38 #include <sys/socket.h>
  39 #include <netinet/in.h>
  40 struct mbuf;
  41 struct rtentry;
  42 #include <net/if.h>])
  43 fi
  44
  45 AC_HEADER_TIME
  46
  47 case "$host_os" in
  48
  49 linux*)
  50         AC_MSG_CHECKING(Linux kernel version)
  51         if test "$cross_compiling" = yes; then
  52                 AC_CACHE_VAL(ac_cv_linux_vers,
  53                     ac_cv_linux_vers=unknown)
  54         else
  55                 AC_CACHE_VAL(ac_cv_linux_vers,
  56                     ac_cv_linux_vers=`uname -r 2>&1 | \
  57                         sed -n -e '$s/.* //' -e '$s/\..*//p'`)
  58         fi
  59         AC_MSG_RESULT($ac_cv_linux_vers)
  60         if test $ac_cv_linux_vers = unknown ; then
  61                 AC_MSG_ERROR(cannot determine linux version when cross-compiling)
  62         fi
  63         if test $ac_cv_linux_vers -lt 2 ; then
  64                 AC_MSG_ERROR(version 2 or higher required; see the INSTALL doc for more info)
  65         fi
  66         ;;
  67
  68 *)
  69         ;;
  70 esac
  71
  72
  73 AC_CHECK_HEADERS(smi.h)
  74 AC_CHECK_LIB(smi, smiInit)
  75 if test "$ac_cv_header_smi_h" = yes -a "$ac_cv_lib_smi_smiInit" = yes
  76 then
  77 AC_MSG_CHECKING([whether to enable libsmi])
  78         AC_TRY_RUN([ /* libsmi available check */
  79 #include <smi.h>
  80 main()
  81 {
  82   int current, revision, age, n;
  83   const int required = 2;
  84   if (smiInit(""))
  85     exit(1);
  86   if (strcmp(SMI_LIBRARY_VERSION, smi_library_version))
  87     exit(2);
  88   n = sscanf(smi_library_version, "%d:%d:%d", &current, &revision, &age);
  89   if (n != 3)
  90     exit(3);
  91   if (required < current - age || required > current)
  92     exit(4);
  93   exit(0);
  94 }
  95 ],
  96 [ AC_MSG_RESULT(yes)
  97   AC_DEFINE(LIBSMI)
  98   libsmi=yes],
  99 dnl autoconf documentation says that $? contains the exit value.
 100 dnl reality is that it does not.  We leave this in just in case
 101 dnl autoconf ever comes back to match the documentation.
 102 [ case $? in
 103   1) AC_MSG_RESULT(no - smiInit failed) ;;
 104   2) AC_MSG_RESULT(no - header/library version mismatch) ;;
 105   3) AC_MSG_RESULT(no - can't determine library version) ;;
 106   4) AC_MSG_RESULT(no - too old) ;;
 107   *) AC_MSG_RESULT(no) ;;
 108   esac
 109   libsmi=no],
 110 [ AC_MSG_RESULT(not when cross-compiling)
 111   libsmi=no]
 112 )
 113 fi
 114
 115 AC_MSG_CHECKING([whether to enable the possibly-buggy SMB printer])
 116 AC_ARG_ENABLE(smb,
 117 [  --enable-smb            enable possibly-buggy SMB printer [default=yes]
 118   --disable-smb           disable possibly-buggy SMB printer],,
 119    enableval=yes)
 120 case "$enableval" in
 121 yes)    AC_MSG_RESULT(yes)
 122         AC_WARN([The SMB printer may have exploitable buffer overflows!!!])
 123         AC_DEFINE(TCPDUMP_DO_SMB)
 124         LOCALSRC="print-smb.c smbutil.c $LOCALSRC"
 125         ;;
 126 *)      AC_MSG_RESULT(no)
 127         ;;
 128 esac
 129
 130 AC_ARG_WITH(user, [  --with-user=USERNAME    drop privileges by default to USERNAME])
 131 AC_MSG_CHECKING([whether to drop root privileges by default])
 132 if test ! -z "$with_user" ; then
 133         AC_DEFINE_UNQUOTED(WITH_USER, "$withval")
 134        AC_MSG_RESULT(to \"$withval\")
 135 else
 136        AC_MSG_RESULT(no)
 137 fi
 138
 139 AC_ARG_WITH(chroot, [  --with-chroot=DIRECTORY when dropping privileges, chroot to DIRECTORY])
 140 AC_MSG_CHECKING([whether to chroot])
 141 if test ! -z "$with_chroot" ; then
 142         AC_DEFINE_UNQUOTED(WITH_CHROOT, "$withval")
 143        AC_MSG_RESULT(to \"$withval\")
 144 else
 145        AC_MSG_RESULT(no)
 146 fi
 147
 148 AC_MSG_CHECKING([whether to enable ipv6])
 149 AC_ARG_ENABLE(ipv6,
 150 [  --enable-ipv6           enable ipv6 (with ipv4) support
 151   --disable-ipv6          disable ipv6 support],
 152 [ case "$enableval" in
 153 yes)   AC_MSG_RESULT(yes)
 154        LOCALSRC="print-ip6.c print-ip6opts.c print-mobility.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c $LOCALSRC"
 155        AC_DEFINE(INET6)
 156        ipv6=yes
 157        ;;
 158 *)
 159        AC_MSG_RESULT(no)
 160        ipv6=no
 161        ;;
 162   esac ],
 163
 164   AC_TRY_RUN([ /* AF_INET6 available check */
 165 #include <sys/types.h>
 166 #include <sys/socket.h>
 167 main()
 168 {
 169  if (socket(AF_INET6, SOCK_STREAM, 0) < 0)
 170    exit(1);
 171  else
 172    exit(0);
 173 }
 174 ],
 175 [ AC_MSG_RESULT(yes)
 176   LOCALSRC="print-ip6.c print-ip6opts.c print-mobility.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c $LOCALSRC"
 177   AC_DEFINE(INET6)
 178   ipv6=yes],
 179 [ AC_MSG_RESULT(no)
 180   ipv6=no],
 181 [ AC_MSG_RESULT(no)
 182   ipv6=no]
 183 ))
 184
 185 ipv6type=unknown
 186 ipv6lib=none
 187 ipv6trylibc=no
 188
 189 if test "$ipv6" = "yes"; then
 190         AC_MSG_CHECKING([ipv6 stack type])
 191         for i in inria kame linux-glibc linux-libinet6 toshiba v6d zeta; do
 192                 case $i in
 193                 inria)
 194                         dnl http://www.kame.net/
 195                         AC_EGREP_CPP(yes,
 196 [#include <netinet/in.h>
 197 #ifdef IPV6_INRIA_VERSION
 198 yes
 199 #endif],
 200                                 [ipv6type=$i;
 201                                 CFLAGS="-DINET6 $CFLAGS"])
 202                         ;;
 203                 kame)
 204                         dnl http://www.kame.net/
 205                         AC_EGREP_CPP(yes,
 206 [#include <netinet/in.h>
 207 #ifdef __KAME__
 208 yes
 209 #endif],
 210                                 [ipv6type=$i;
 211                                 ipv6lib=inet6;
 212                                 ipv6libdir=/usr/local/v6/lib;
 213                                 ipv6trylibc=yes;
 214                                 CFLAGS="-DINET6 $CFLAGS"])
 215                         ;;
 216                 linux-glibc)
 217                         dnl http://www.v6.linux.or.jp/
 218                         AC_EGREP_CPP(yes,
 219 [#include <features.h>
 220 #if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
 221 yes
 222 #endif],
 223                                 [ipv6type=$i;
 224                                 CFLAGS="-DINET6 $CFLAGS"])
 225                         ;;
 226                 linux-libinet6)
 227                         dnl http://www.v6.linux.or.jp/
 228                         dnl
 229                         dnl This also matches Solaris 8 and Tru64 UNIX 5.1,
 230                         dnl and possibly other versions of those OSes
 231                         dnl
 232                         if test -d /usr/inet6 -o -f /usr/include/netinet/ip6.h; then
 233                                 ipv6type=$i
 234                                 ipv6lib=inet6
 235                                 ipv6libdir=/usr/inet6/lib
 236                                 ipv6trylibc=yes;
 237                                 CFLAGS="-DINET6 -I/usr/inet6/include $CFLAGS"
 238                         fi
 239                         ;;
 240                 toshiba)
 241                         AC_EGREP_CPP(yes,
 242 [#include <sys/param.h>
 243 #ifdef _TOSHIBA_INET6
 244 yes
 245 #endif],
 246                                 [ipv6type=$i;
 247                                 ipv6lib=inet6;
 248                                 ipv6libdir=/usr/local/v6/lib;
 249                                 CFLAGS="-DINET6 $CFLAGS"])
 250                         ;;
 251                 v6d)
 252                         AC_EGREP_CPP(yes,
 253 [#include </usr/local/v6/include/sys/v6config.h>
 254 #ifdef __V6D__
 255 yes
 256 #endif],
 257                                 [ipv6type=$i;
 258                                 ipv6lib=v6;
 259                                 ipv6libdir=/usr/local/v6/lib;
 260                                 CFLAGS="-I/usr/local/v6/include $CFLAGS"])
 261                         ;;
 262                 zeta)
 263                         AC_EGREP_CPP(yes,
 264 [#include <sys/param.h>
 265 #ifdef _ZETA_MINAMI_INET6
 266 yes
 267 #endif],
 268                                 [ipv6type=$i;
 269                                 ipv6lib=inet6;
 270                                 ipv6libdir=/usr/local/v6/lib;
 271                                 CFLAGS="-DINET6 $CFLAGS"])
 272                         ;;
 273                 esac
 274                 if test "$ipv6type" != "unknown"; then
 275                         break
 276                 fi
 277         done
 278         AC_MSG_RESULT($ipv6type)
 279 fi
 280
 281 if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then
 282         if test -d $ipv6libdir -a -f $ipv6libdir/lib$ipv6lib.a; then
 283                 LIBS="-L$ipv6libdir -l$ipv6lib $LIBS"
 284                 echo "You have $ipv6lib library, using it"
 285         else
 286                 if test "$ipv6trylibc" = "yes"; then
 287                         echo "You do not have $ipv6lib library, using libc"
 288                 else
 289                         echo 'Fatal: no $ipv6lib library found.  cannot continue.'
 290                         echo "You need to fetch lib$ipv6lib.a from appropriate"
 291                         echo 'ipv6 kit and compile beforehand.'
 292                         exit 1
 293                 fi
 294         fi
 295 fi
 296
 297
 298 if test "$ipv6" = "yes"; then
 299         #
 300         # XXX - on Tru64 UNIX 5.1, there is no "getaddrinfo()"
 301         # function in libc; there are "ngetaddrinfo()" and
 302         # "ogetaddrinfo()" functions, and <netdb.h> #defines
 303         # "getaddrinfo" to be either "ngetaddrinfo" or
 304         # "ogetaddrinfo", depending on whether _SOCKADDR_LEN
 305         # or _XOPEN_SOURCE_EXTENDED are defined or not.
 306         #
 307         # So this test doesn't work on Tru64 5.1, and possibly
 308         # on other 5.x releases.  This causes the configure
 309         # script to become confused, and results in libpcap
 310         # being unbuildable.
 311         #
 312         AC_SEARCH_LIBS(getaddrinfo, socket, [dnl
 313         AC_MSG_CHECKING(getaddrinfo bug)
 314         AC_CACHE_VAL(td_cv_buggygetaddrinfo, [AC_TRY_RUN([
 315 #include <sys/types.h>
 316 #include <netdb.h>
 317 #include <string.h>
 318 #include <sys/socket.h>
 319 #include <netinet/in.h>
 320
 321 main()
 322 {
 323   int passive, gaierr, inet4 = 0, inet6 = 0;
 324   struct addrinfo hints, *ai, *aitop;
 325   char straddr[INET6_ADDRSTRLEN], strport[16];
 326
 327   for (passive = 0; passive <= 1; passive++) {
 328     memset(&hints, 0, sizeof(hints));
 329     hints.ai_family = AF_UNSPEC;
 330     hints.ai_flags = passive ? AI_PASSIVE : 0;
 331     hints.ai_socktype = SOCK_STREAM;
 332     hints.ai_protocol = IPPROTO_TCP;
 333     if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) {
 334       (void)gai_strerror(gaierr);
 335       goto bad;
 336     }
 337     for (ai = aitop; ai; ai = ai->ai_next) {
 338       if (ai->ai_addr == NULL ||
 339           ai->ai_addrlen == 0 ||
 340           getnameinfo(ai->ai_addr, ai->ai_addrlen,
 341                       straddr, sizeof(straddr), strport, sizeof(strport),
 342                       NI_NUMERICHOST|NI_NUMERICSERV) != 0) {
 343         goto bad;
 344       }
 345       switch (ai->ai_family) {
 346       case AF_INET:
 347         if (strcmp(strport, "54321") != 0) {
 348           goto bad;
 349         }
 350         if (passive) {
 351           if (strcmp(straddr, "0.0.0.0") != 0) {
 352             goto bad;
 353           }
 354         } else {
 355           if (strcmp(straddr, "127.0.0.1") != 0) {
 356             goto bad;
 357           }
 358         }
 359         inet4++;
 360         break;
 361       case AF_INET6:
 362         if (strcmp(strport, "54321") != 0) {
 363           goto bad;
 364         }
 365         if (passive) {
 366           if (strcmp(straddr, "::") != 0) {
 367             goto bad;
 368           }
 369         } else {
 370           if (strcmp(straddr, "::1") != 0) {
 371             goto bad;
 372           }
 373         }
 374         inet6++;
 375         break;
 376       case AF_UNSPEC:
 377         goto bad;
 378         break;
 379 #ifdef AF_UNIX
 380       case AF_UNIX:
 381 #else
 382 #ifdef AF_LOCAL
 383       case AF_LOCAL:
 384 #endif
 385 #endif
 386       default:
 387         /* another family support? */
 388         break;
 389       }
 390     }
 391   }
 392
 393   /* supported family should be 2, unsupported family should be 0 */
 394   if (!(inet4 == 0 || inet4 == 2))
 395     goto bad;
 396   if (!(inet6 == 0 || inet6 == 2))
 397     goto bad;
 398
 399   if (aitop)
 400     freeaddrinfo(aitop);
 401   exit(0);
 402
 403  bad:
 404   if (aitop)
 405     freeaddrinfo(aitop);
 406   exit(1);
 407 }
 408 ],
 409         td_cv_buggygetaddrinfo=no,
 410         td_cv_buggygetaddrinfo=yes,
 411         td_cv_buggygetaddrinfo=yes)])
 412         if test "$td_cv_buggygetaddrinfo" = no; then
 413                 AC_MSG_RESULT(good)
 414         else
 415                 AC_MSG_RESULT(buggy)
 416         fi
 417
 418         if test "$td_cv_buggygetaddrinfo" = "yes"; then
 419                 #
 420                 # XXX - it doesn't appear that "ipv6type" can ever be
 421                 # set to "linux".  Should this be testing for
 422                 # "linux-glibc", or for that *or* "linux-libinet6"?
 423                 # If the latter, note that "linux-libinet6" is also
 424                 # the type given to some non-Linux OSes.
 425                 #
 426                 if test "$ipv6type" != "linux"; then
 427                         echo 'Fatal: You must get working getaddrinfo() function.'
 428                         echo '       or you can specify "--disable-ipv6"'.
 429                         exit 1
 430                 else
 431                         echo 'Warning: getaddrinfo() implementation on your system seems be buggy.'
 432                         echo '         Better upgrade your system library to newest version'
 433                         echo '         of GNU C library (aka glibc).'
 434                 fi
 435         fi
 436         ])
 437         AC_REPLACE_FUNCS(getaddrinfo getnameinfo)
 438 fi
 439
 440 AC_CACHE_CHECK([for dnet_htoa declaration in netdnet/dnetdb.h],
 441 [td_cv_decl_netdnet_dnetdb_h_dnet_htoa],
 442 [AC_EGREP_HEADER(dnet_htoa, netdnet/dnetdb.h,
 443         td_cv_decl_netdnet_dnetdb_h_dnet_htoa=yes,
 444         td_cv_decl_netdnet_dnetdb_h_dnet_htoa=no)])
 445 if test "$td_cv_decl_netdnet_dnetdb_h_dnet_htoa" = yes; then
 446         AC_DEFINE(HAVE_NETDNET_DNETDB_H_DNET_HTOA)
 447 fi
 448
 449 dnl
 450 dnl check sizeof basic types.
 451 dnl They're very likely to be wrong for cross-compiling.
 452 AC_CHECK_SIZEOF(char, 1)
 453 AC_CHECK_SIZEOF(short, 2)
 454 AC_CHECK_SIZEOF(int, 4)
 455 AC_CHECK_SIZEOF(long, 4)
 456 AC_CHECK_SIZEOF(long long, 8)
 457
 458 dnl
 459 dnl Checks for u_intXX_t
 460 dnl AC_CHECK_BITTYPES(ac_cv_bittypes)
 461 dnl if test "$ac_cv_bittypes" = no; then
 462 dnl     missing_includes=yes
 463 dnl fi
 464
 465 dnl
 466 dnl Checks for addrinfo structure
 467 AC_STRUCT_ADDRINFO(ac_cv_addrinfo)
 468 if test "$ac_cv_addrinfo" = no; then
 469         missing_includes=yes
 470 fi
 471
 472 dnl
 473 dnl Checks for NI_MAXSERV
 474 AC_NI_MAXSERV(ac_cv_maxserv)
 475 if test "$ac_cv_maxserv" = no; then
 476         missing_includes=yes
 477 fi
 478
 479 dnl
 480 dnl Checks for NI_NAMEREQD
 481 AC_NI_NAMEREQD(ac_cv_namereqd)
 482 if test "$ac_cv_namereqd" = no; then
 483         missing_includes=yes
 484 fi
 485
 486 dnl
 487 dnl Checks for sockaddr_storage structure
 488 AC_STRUCT_SA_STORAGE(ac_cv_sa_storage)
 489 if test "$ac_cv_sa_storage" = no; then
 490         missing_includes=yes
 491 fi
 492
 493 dnl
 494 dnl Checks for IN[6]ADDRSZ
 495 AC_CHECK_ADDRSZ(ac_cv_addrsz)
 496 if test "$ac_cv_addrsz" = no; then
 497         missing_includes=yes
 498 fi
 499
 500 dnl
 501 dnl Checks for RES_USE_INET6
 502 AC_CHECK_RES_USE_INET6(ac_cv_res_inet6)
 503 if test "$ac_cv_res_inet6" = no; then
 504         missing_includes=yes
 505 fi
 506
 507 dnl
 508 dnl Checks for res_state_ext structure
 509 AC_STRUCT_RES_STATE_EXT(ac_cv_res_state_ext)
 510 if test "$ac_cv_res_state_ext" = no; then
 511         missing_includes=yes
 512 fi
 513
 514 dnl
 515 dnl Checks if res_state structure has nsort member.
 516 AC_STRUCT_RES_STATE(ac_cv_res_state)
 517
 518
 519 AC_REPLACE_FUNCS(vfprintf strcasecmp strlcat strlcpy strdup strsep)
 520 AC_CHECK_FUNCS(strftime)
 521 AC_CHECK_FUNCS(setlinebuf alarm)
 522
 523 needsnprintf=no
 524 AC_CHECK_FUNCS(vsnprintf snprintf,,
 525         [needsnprintf=yes])
 526 if test $needsnprintf = yes; then
 527         AC_LIBOBJ(snprintf)
 528 fi
 529
 530 AC_LBL_TYPE_SIGNAL
 531
 532 AC_SEARCH_LIBS(dnet_htoa, dnet, AC_DEFINE(HAVE_DNET_HTOA))
 533
 534 AC_CHECK_LIB(rpc, main)         dnl It's unclear why we might need -lrpc
 535
 536 dnl Some platforms may need -lnsl for getrpcbynumber.
 537 AC_SEARCH_LIBS(getrpcbynumber, nsl, AC_DEFINE(HAVE_GETRPCBYNUMBER))
 538
 539 dnl AC_CHECK_LIB(z, uncompress)
 540 dnl AC_CHECK_HEADERS(zlib.h)
 541
 542 AC_LBL_LIBPCAP(V_PCAPDEP, V_INCLS)
 543
 544 #
 545 # Check for these after AC_LBL_LIBPCAP, so we link with the appropriate
 546 # libraries (e.g., "-lsocket -lnsl" on Solaris).
 547 #
 548 # We don't use AC_REPLACE_FUNCS because that uses AC_CHECK_FUNCS which
 549 # use AC_CHECK_FUNC which doesn't let us specify the right #includes
 550 # to make this work on BSD/OS 4.x.  BSD/OS 4.x ships with the BIND8
 551 # resolver, and the way it defines inet_{ntop,pton} is rather strange;
 552 # it does not ship with a libc symbol "inet_ntop()", it ships with
 553 # "_inet_ntop()", and has a #define macro in one of the system headers
 554 # to rename it.
 555 #
 556 dnl AC_TRY_COMPILE(inet_ntop inet_pton inet_aton)
 557 AC_MSG_CHECKING(for inet_ntop)
 558 AC_TRY_LINK([#include <sys/types.h>
 559 #include <sys/socket.h>
 560 #include <netinet/in.h>
 561 #include <arpa/inet.h>], [char src[4], dst[128];
 562 inet_ntop(AF_INET, src, dst, sizeof(dst));],
 563         [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
 564         AC_LIBOBJ(inet_ntop)])
 565 AC_MSG_CHECKING(for inet_pton)
 566 AC_TRY_LINK([#include <sys/types.h>
 567 #include <sys/socket.h>
 568 #include <netinet/in.h>
 569 #include <arpa/inet.h>], [char src[128], dst[4];
 570 inet_pton(AF_INET, src, dst);],
 571         [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
 572         AC_LIBOBJ(inet_pton)])
 573 AC_MSG_CHECKING(for inet_aton)
 574 AC_TRY_LINK([#include <sys/types.h>
 575 #include <netinet/in.h>
 576 #include <arpa/inet.h>], [char src[128];
 577 struct in_addr dst;
 578 inet_aton(src, &dst);],
 579         [AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
 580         AC_LIBOBJ(inet_aton)])
 581
 582 #
 583 # Check for these after AC_LBL_LIBPCAP, for the same reason.
 584 #
 585 # You are in a twisty little maze of UN*Xes, all different.
 586 # Some might not have ether_ntohost().
 587 # Some might have it, but not declare it in any header file.
 588 # Some might have it, but declare it in <netinet/if_ether.h>.
 589 # Some might have it, but declare it in <netinet/ether.h>
 590 # (And some might have it but document it as something declared in
 591 # <netinet/ethernet.h>, although <netinet/if_ether.h> appears to work.)
 592 #
 593 # Before you is a C compiler.
 594 #
 595 AC_CHECK_FUNCS(ether_ntohost, [
 596     AC_CACHE_CHECK(for buggy ether_ntohost, ac_cv_buggy_ether_ntohost, [
 597         AC_TRY_RUN([
 598                 #include <netdb.h>
 599                 #include <sys/types.h>
 600                 #include <sys/param.h>
 601                 #include <sys/socket.h>
 602
 603                 int
 604                 main(int argc, char **argv)
 605                 {
 606                         u_char ea[6] = { 0xff, 0xff, 0xff, 0xff, 0xff };
 607                         char name[MAXHOSTNAMELEN];
 608
 609                         ether_ntohost(name, (struct ether_addr *)ea);
 610                         exit(0);
 611                 }
 612         ], [ac_cv_buggy_ether_ntohost=no],
 613            [ac_cv_buggy_ether_ntohost=yes],
 614            [ac_cv_buggy_ether_ntohost="not while cross-compiling"])])
 615     if test "$ac_cv_buggy_ether_ntohost" = "no"; then
 616         AC_DEFINE(USE_ETHER_NTOHOST)
 617     fi
 618 ])
 619 if test "$ac_cv_func_ether_ntohost" = yes -a \
 620     "$ac_cv_buggy_ether_ntohost" = "no"; then
 621         #
 622         # OK, we have ether_ntohost().  Do we have <netinet/if_ether.h>?
 623         #
 624         if test "$ac_cv_header_netinet_if_ether_h" = yes; then
 625                 #
 626                 # Yes.  Does it declare ether_ntohost()?
 627                 #
 628                 AC_CHECK_DECL(ether_ntohost,
 629                     [
 630                         AC_DEFINE(NETINET_IF_ETHER_H_DECLARES_ETHER_NTOHOST,,
 631                             [Define to 1 if netinet/if_ether.h declares `ether_ntohost'])
 632                     ],,
 633                     [
 634 #include <sys/types.h>
 635 #include <sys/socket.h>
 636 #include <netinet/in.h>
 637 #include <arpa/inet.h>
 638 struct mbuf;
 639 struct rtentry;
 640 #include <net/if.h>
 641 #include <netinet/if_ether.h>
 642                     ])
 643         fi
 644         #
 645         # Did that succeed?
 646         #
 647         if test "$ac_cv_have_decl_ether_ntohost" != yes; then
 648                 #
 649                 # No, how about <netinet/ether.h>, as on Linux?
 650                 #
 651                 AC_CHECK_HEADERS(netinet/ether.h)
 652                 if test "$ac_cv_header_netinet_ether_h" = yes; then
 653                         #
 654                         # We have it - does it declare ether_ntohost()?
 655                         # Unset ac_cv_have_decl_ether_ntohost so we don't
 656                         # treat the previous failure as a cached value and
 657                         # suppress the next test.
 658                         #
 659                         unset ac_cv_have_decl_ether_ntohost
 660                         AC_CHECK_DECL(ether_ntohost,
 661                             [
 662                                 AC_DEFINE(NETINET_ETHER_H_DECLARES_ETHER_NTOHOST,,
 663                                     [Define to 1 if netinet/ether.h declares `ether_ntohost'])
 664                             ],,
 665                             [
 666 #include <netinet/ether.h>
 667                             ])
 668                 fi
 669         fi
 670         #
 671         # Is ether_ntohost() declared?
 672         #
 673         if test "$ac_cv_have_decl_ether_ntohost" != yes; then
 674                 #
 675                 # No, we'll have to declare it ourselves.
 676                 # Do we have "struct ether_addr"?
 677                 #
 678                 AC_CHECK_TYPES(struct ether_addr,,,
 679                     [
 680 #include <sys/types.h>
 681 #include <sys/socket.h>
 682 #include <netinet/in.h>
 683 #include <arpa/inet.h>
 684 struct mbuf;
 685 struct rtentry;
 686 #include <net/if.h>
 687 #include <netinet/if_ether.h>
 688                     ])
 689                 AC_DEFINE(HAVE_DECL_ETHER_NTOHOST, 0,
 690                     [Define to 1 if you have the declaration of `ether_ntohost', and to 0 if you
 691 don't.])
 692         else
 693                 AC_DEFINE(HAVE_DECL_ETHER_NTOHOST, 1,
 694                     [Define to 1 if you have the declaration of `ether_ntohost', and to 0 if you
 695 don't.])
 696         fi
 697 fi
 698
 699 dnl portability macros for getaddrinfo/getnameinfo
 700 dnl
 701 dnl Check for sa_len
 702 AC_CHECK_SA_LEN(ac_cv_sockaddr_has_sa_len)
 703 if test "$ac_cv_sockaddr_has_sa_len" = no; then
 704         missing_includes=yes
 705 fi
 706
 707 AC_CHECK_FUNCS(pcap_findalldevs pcap_dump_flush pcap_lib_version)
 708 if test $ac_cv_func_pcap_findalldevs = "yes" ; then
 709 dnl Check for Mac OS X, which may ship pcap.h from 0.6 but libpcap may
 710 dnl be 0.8; this means that lib has pcap_findalldevs but header doesn't
 711 dnl have pcap_if_t.
 712     savedcflags="$CFLAGS"
 713     CFLAGS="$CFLAGS $V_INCLS"
 714     AC_CHECK_TYPES(pcap_if_t, , , [#include <pcap.h>])
 715     CFLAGS="$savedcflags"
 716 fi
 717
 718 if test $ac_cv_func_pcap_lib_version = "no" ; then
 719     AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
 720     AC_TRY_LINK([],
 721        [
 722         extern char pcap_version[];
 723
 724         return (int)pcap_version;
 725        ],
 726        ac_lbl_cv_pcap_version_defined=yes,
 727        ac_lbl_cv_pcap_version_defined=no)
 728     if test "$ac_lbl_cv_pcap_version_defined" = yes ; then
 729         AC_MSG_RESULT(yes)
 730         AC_DEFINE(HAVE_PCAP_VERSION)
 731     else
 732         AC_MSG_RESULT(no)
 733     fi
 734 fi
 735 AC_MSG_CHECKING(whether pcap_debug is defined by libpcap)
 736 AC_TRY_LINK([],
 737    [
 738         extern int pcap_debug;
 739
 740         return pcap_debug;
 741    ],
 742    ac_lbl_cv_pcap_debug_defined=yes,
 743    ac_lbl_cv_pcap_debug_defined=no)
 744 if test "$ac_lbl_cv_pcap_debug_defined" = yes ; then
 745         AC_MSG_RESULT(yes)
 746         AC_DEFINE(HAVE_PCAP_DEBUG)
 747 else
 748         AC_MSG_RESULT(no)
 749         #
 750         # OK, what about "yydebug"?
 751         #
 752         AC_MSG_CHECKING(whether yydebug is defined by libpcap)
 753         AC_TRY_LINK([],
 754            [
 755                 extern int yydebug;
 756
 757                 return yydebug;
 758            ],
 759            ac_lbl_cv_yydebug_defined=yes,
 760            ac_lbl_cv_yydebug_defined=no)
 761         if test "$ac_lbl_cv_yydebug_defined" = yes ; then
 762                 AC_MSG_RESULT(yes)
 763                 AC_DEFINE(HAVE_YYDEBUG)
 764         else
 765                 AC_MSG_RESULT(no)
 766         fi
 767 fi
 768 AC_REPLACE_FUNCS(bpf_dump)      dnl moved to libpcap in 0.6
 769
 770 V_GROUP=0
 771 if test -f /etc/group -a ! -z "`grep '^wheel:' /etc/group`" ; then
 772         V_GROUP=wheel
 773 fi
 774 case "$host_os" in
 775
 776 aix*)
 777         dnl Workaround to enable certain features
 778         AC_DEFINE(_SUN)
 779         ;;
 780
 781 irix*)
 782         V_GROUP=sys
 783         ;;
 784
 785 osf*)
 786         V_GROUP=system
 787         ;;
 788
 789 solaris*)
 790         V_GROUP=sys
 791         ;;
 792 esac
 793
 794 if test -f /dev/bpf0 ; then
 795         V_GROUP=bpf
 796 fi
 797
 798 AC_CHECK_HEADERS(sys/bitypes.h)
 799
 800 AC_CHECK_TYPE([int8_t], ,
 801         [AC_DEFINE([int8_t], [signed char],
 802         [Define to `signed char' if int8_t not defined.])])
 803 AC_CHECK_TYPE([u_int8_t], ,
 804         [AC_DEFINE([u_int8_t], [unsigned char],
 805         [Define to `unsigned char' if u_int8_t not defined.])],
 806         [AC_INCLUDES_DEFAULT
 807 #ifdef HAVE_SYS_BITYPES_H
 808 #include <sys/bitypes.h>
 809 #endif])
 810 AC_CHECK_TYPE([int16_t], ,
 811         [AC_DEFINE([int16_t], [short],
 812         [Define to `short' if int16_t not defined.])])
 813 AC_CHECK_TYPE([u_int16_t], ,
 814         [AC_DEFINE([u_int16_t], [unsigned short],
 815         [Define to `unsigned short' if u_int16_t not defined.])],
 816         [AC_INCLUDES_DEFAULT
 817 #ifdef HAVE_SYS_BITYPES_H
 818 #include <sys/bitypes.h>
 819 #endif])
 820 AC_CHECK_TYPE([int32_t], ,
 821         [AC_DEFINE([int32_t], [int],
 822         [Define to `int' if int32_t not defined.])])
 823 AC_CHECK_TYPE([u_int32_t], ,
 824         [AC_DEFINE([u_int32_t], [unsigned int],
 825         [Define to `unsigned int' if u_int32_t not defined.])],
 826         [AC_INCLUDES_DEFAULT
 827 #ifdef HAVE_SYS_BITYPES_H
 828 #include <sys/bitypes.h>
 829 #endif])
 830 AC_CHECK_TYPE([int64_t], ,
 831         [AC_DEFINE([int64_t], [long long],
 832         [Define to `long long' if int64_t not defined.])])
 833 AC_CHECK_TYPE([u_int64_t], ,
 834         [AC_DEFINE([u_int64_t], [unsigned long long],
 835         [Define to `unsigned long long' if u_int64_t not defined.])],
 836         [AC_INCLUDES_DEFAULT
 837 #ifdef HAVE_SYS_BITYPES_H
 838 #include <sys/bitypes.h>
 839 #endif])
 840
 841 #
 842 # We can't just check for <inttypes.h> - some systems have one that
 843 # doesn't define all the PRI[doxu]64 macros.
 844 #
 845 AC_CHECK_HEADERS(inttypes.h,
 846   [
 847     #
 848     # OK, we have inttypes.h, but does it define those macros?
 849     #
 850     AC_MSG_CHECKING([[whether inttypes.h defines the PRI[doxu]64 macros]])
 851     AC_COMPILE_IFELSE(
 852       [
 853         AC_LANG_SOURCE(
 854           [[
 855             #include <inttypes.h>
 856             #include <stdio.h>
 857             #include <sys/types.h>
 858             #ifdef HAVE_SYS_BITYPES_H
 859             #include <sys/bitypes.h>
 860             #endif
 861
 862             main()
 863             {
 864               printf("%" PRId64 "\n", (u_int64_t)1);
 865               printf("%" PRIo64 "\n", (u_int64_t)1);
 866               printf("%" PRIx64 "\n", (u_int64_t)1);
 867               printf("%" PRIu64 "\n", (u_int64_t)1);
 868             }
 869           ]])
 870       ],
 871       [
 872         AC_MSG_RESULT(yes)
 873         ac_lbl_inttypes_h_defines_formats=yes
 874       ],
 875       [
 876         AC_MSG_RESULT(no)
 877         ac_lbl_inttypes_h_defines_formats=no
 878       ])
 879   ],
 880   [
 881     #
 882     # We don't have inttypes.h, so it obviously can't define those
 883     # macros.
 884     #
 885     ac_lbl_inttypes_h_defines_formats=no
 886   ])
 887 if test "$ac_lbl_inttypes_h_defines_formats" = no; then
 888   AC_LBL_CHECK_64BIT_FORMAT(l,
 889     [
 890       AC_LBL_CHECK_64BIT_FORMAT(ll,
 891         [
 892           AC_LBL_CHECK_64BIT_FORMAT(L,
 893             [
 894               AC_LBL_CHECK_64BIT_FORMAT(q,
 895                 [
 896                   AC_MSG_ERROR([neither %llx nor %Lx nor %qx worked on a 64-bit integer])
 897                 ])
 898             ])
 899         ])
 900     ])
 901 fi
 902
 903 AC_PROG_RANLIB
 904
 905 AC_LBL_DEVEL(V_CCOPT)
 906
 907 AC_LBL_SOCKADDR_SA_LEN
 908
 909 AC_LBL_UNALIGNED_ACCESS
 910
 911 AC_VAR_H_ERRNO
 912
 913 AC_ARG_WITH(crypto, [  --without-crypto        disable crypto support],
 914         [], [
 915 AC_MSG_CHECKING(for SSLeay)
 916 ac_cv_ssleay_path=no
 917 incdir=no
 918
 919 #
 920 # If Xprefix is set in the environment, use that value.
 921 # XXX - this should arguably be done by having --with-crypto take an
 922 # optional argument, and have that argument be used to set Xprefix
 923 # if present.
 924 #
 925 if test -z "$Xprefix"; then
 926         Xprefix=`eval echo $prefix`
 927 fi
 928
 929 for dir in $Xprefix /usr/${host_alias} /usr /usr/local /usr/local/ssl /usr/pkg; do
 930         #
 931         # XXX - is there a better way to check if a given library is
 932         # in a given directory than checking each of the possible
 933         # shared library suffixes?
 934         #
 935         # Are there any other suffixes we need to look for?  Do we have to
 936         # worry about ".so.{version}"?
 937         #
 938         # Or should we just look for "libcrypto.*"?
 939         #
 940         if test -d $dir/lib -a \( -f $dir/lib/libcrypto.a -o \
 941                                   -f $dir/lib/libcrypto.so -o \
 942                                   -f $dir/lib/libcrypto.sl -o \
 943                                   -f $dir/lib/libcrypto.dylib \); then
 944                 ac_cv_ssleay_path=$dir
 945         fi
 946         if test -d $dir/include/openssl -a -f $dir/include/openssl/des.h; then
 947                 incdir="-I$dir/include"
 948         fi
 949         if test "$ac_cv_ssleay_path" != "no" -a "$incdir" != "no"; then
 950                 break;
 951         else
 952                 ac_cv_ssleay_path=no
 953                 incdir=no
 954         fi
 955 done
 956 AC_MSG_RESULT($ac_cv_ssleay_path)
 957 if test "$ac_cv_ssleay_path" != no; then
 958         V_INCLS="$V_INCLS $incdir"
 959         LDFLAGS="-L$dir/lib $LDFLAGS"
 960         if test -f $ac_cv_ssleay_path/lib/libRSAglue.a; then
 961                 LIBS="$LIBS -lRSAglue"
 962         fi
 963         if test -f $ac_cv_ssleay_path/lib/librsaref.a; then
 964                 LIBS="$LIBS -lrsaref"
 965         fi
 966         AC_CHECK_LIB(crypto, DES_cbc_encrypt)
 967
 968         CPPFLAGS="$CPPFLAGS $V_INCLS"
 969         AC_CHECK_HEADERS(openssl/evp.h)
 970 fi
 971 ])
 972
 973 dnl
 974 dnl set additional include path if necessary
 975 if test "$missing_includes" = "yes"; then
 976         CPPFLAGS="$CPPFLAGS -I\$(srcdir)/missing"
 977         V_INCLS="$V_INCLS -I\$(srcdir)/missing"
 978 fi
 979
 980 AC_SUBST(V_CCOPT)
 981 AC_SUBST(V_DEFS)
 982 AC_SUBST(V_GROUP)
 983 AC_SUBST(V_INCLS)
 984 AC_SUBST(V_PCAPDEP)
 985 AC_SUBST(LOCALSRC)
 986
 987 AC_PROG_INSTALL
 988
 989 AC_CONFIG_HEADER(config.h)
 990
 991 AC_OUTPUT_COMMANDS([if test -f .devel; then
 992         echo timestamp > stamp-h
 993         cat Makefile-devel-adds >> Makefile
 994         make depend
 995 fi])
 996 AC_OUTPUT(Makefile)
 997 exit 0