acinclude.m4

   1 dnl Macros that test for specific features.
   2 dnl This file is part of the Autoconf packaging for Wireshark.
   3 dnl Copyright (C) 1998-2000 by Gerald Combs.
   4 dnl
   5 dnl $Id$
   6 dnl
   7 dnl This program is free software; you can redistribute it and/or modify
   8 dnl it under the terms of the GNU General Public License as published by
   9 dnl the Free Software Foundation; either version 2, or (at your option)
  10 dnl any later version.
  11 dnl
  12 dnl This program is distributed in the hope that it will be useful,
  13 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 dnl GNU General Public License for more details.
  16 dnl
  17 dnl You should have received a copy of the GNU General Public License
  18 dnl along with this program; if not, write to the Free Software
  19 dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  20 dnl 02111-1307, USA.
  21 dnl
  22 dnl As a special exception, the Free Software Foundation gives unlimited
  23 dnl permission to copy, distribute and modify the configure scripts that
  24 dnl are the output of Autoconf.  You need not follow the terms of the GNU
  25 dnl General Public License when using or distributing such scripts, even
  26 dnl though portions of the text of Autoconf appear in them.  The GNU
  27 dnl General Public License (GPL) does govern all other use of the material
  28 dnl that constitutes the Autoconf program.
  29 dnl
  30 dnl Certain portions of the Autoconf source text are designed to be copied
  31 dnl (in certain cases, depending on the input) into the output of
  32 dnl Autoconf.  We call these the "data" portions.  The rest of the Autoconf
  33 dnl source text consists of comments plus executable code that decides which
  34 dnl of the data portions to output in any given case.  We call these
  35 dnl comments and executable code the "non-data" portions.  Autoconf never
  36 dnl copies any of the non-data portions into its output.
  37 dnl
  38 dnl This special exception to the GPL applies to versions of Autoconf
  39 dnl released by the Free Software Foundation.  When you make and
  40 dnl distribute a modified version of Autoconf, you may extend this special
  41 dnl exception to the GPL to apply to your modified version as well, *unless*
  42 dnl your modified version has the potential to copy into its output some
  43 dnl of the text that was the non-data portion of the version that you started
  44 dnl with.  (In other words, unless your change moves or copies text from
  45 dnl the non-data portions to the data portions.)  If your modification has
  46 dnl such potential, you must delete any notice of this special exception
  47 dnl to the GPL from your modified version.
  48 dnl
  49 dnl Written by David MacKenzie, with help from
  50 dnl Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
  51 dnl Roland McGrath, Noah Friedman, david d zuhn, and many others.
  52
  53 #
  54 # AC_WIRESHARK_ADD_DASH_L
  55 #
  56 # Add to the variable specified as the first argument a "-L" flag for the
  57 # directory specified as the second argument, and, on Solaris, add a
  58 # "-R" flag for it as well.
  59 #
  60 # XXX - IRIX, and other OSes, may require some flag equivalent to
  61 # "-R" here.
  62 #
  63 AC_DEFUN([AC_WIRESHARK_ADD_DASH_L],
  64 [$1="$$1 -L$2"
  65 case "$host_os" in
  66   solaris*)
  67     $1="$$1 -R$2"
  68   ;;
  69 esac
  70 ])
  71
  72
  73 #
  74 # AC_WIRESHARK_STRUCT_SA_LEN
  75 #
  76 dnl AC_STRUCT_ST_BLKSIZE extracted from the file in question,
  77 dnl "acspecific.m4" in GNU Autoconf 2.12, and turned into
  78 dnl AC_WIRESHARK_STRUCT_SA_LEN, which checks if "struct sockaddr"
  79 dnl has the 4.4BSD "sa_len" member, and defines HAVE_SA_LEN; that's
  80 dnl what's in this file.
  81 dnl Done by Guy Harris <guy@alum.mit.edu> on 1998-11-14.
  82
  83 dnl ### Checks for structure members
  84
  85 AC_DEFUN([AC_WIRESHARK_STRUCT_SA_LEN],
  86 [AC_CACHE_CHECK([for sa_len in struct sockaddr], ac_cv_wireshark_struct_sa_len,
  87 [AC_TRY_COMPILE([#include <sys/types.h>
  88 #include <sys/socket.h>], [struct sockaddr s; s.sa_len;],
  89 ac_cv_wireshark_struct_sa_len=yes, ac_cv_wireshark_struct_sa_len=no)])
  90 if test $ac_cv_wireshark_struct_sa_len = yes; then
  91   AC_DEFINE(HAVE_SA_LEN, 1, [Define if sa_len field exists in struct sockaddr])
  92 fi
  93 ])
  94
  95
  96 dnl
  97 dnl Check whether a given format can be used to print 64-bit integers
  98 dnl
  99 AC_DEFUN([AC_WIRESHARK_CHECK_64BIT_FORMAT],
 100 [
 101   AC_MSG_CHECKING([whether %$1x can be used to format 64-bit integers])
 102   AC_RUN_IFELSE(
 103     [
 104       AC_LANG_SOURCE(
 105         [[
 106 #         ifdef HAVE_INTTYPES_H
 107           #include <inttypes.h>
 108 #         endif
 109           #include <glibconfig.h>
 110           #include <stdio.h>
 111           #include <sys/types.h>
 112
 113           main()
 114           {
 115             guint64 t = 1;
 116             char strbuf[16+1];
 117             sprintf(strbuf, "%016$1x", t << 32);
 118             if (strcmp(strbuf, "0000000100000000") == 0)
 119               exit(0);
 120             else
 121               exit(1);
 122           }
 123         ]])
 124     ],
 125     [
 126       AC_DEFINE(PRId64, "$1d", [Format for printing 64-bit signed decimal numbers])
 127       AC_DEFINE(PRIo64, "$1o", [Format for printing 64-bit unsigned octal numbers])
 128       AC_DEFINE(PRIx64, "$1x", [Format for printing 64-bit unsigned hexadecimal numbers (lower-case)])
 129       AC_DEFINE(PRIX64, "$1X", [Format for printing 64-bit unsigned hexadecimal numbers (upper-case)])
 130       AC_DEFINE(PRIu64, "$1u", [Format for printing 64-bit unsigned decimal numbers])
 131       AC_MSG_RESULT(yes)
 132     ],
 133     [
 134       AC_MSG_RESULT(no)
 135       $2
 136     ])
 137 ])
 138
 139 #
 140 # AC_WIRESHARK_IPV6_STACK
 141 #
 142 # By Jun-ichiro "itojun" Hagino, <itojun@iijlab.net>
 143 #
 144 AC_DEFUN([AC_WIRESHARK_IPV6_STACK],
 145 [
 146         v6type=unknown
 147         v6lib=none
 148
 149         AC_MSG_CHECKING([ipv6 stack type])
 150         for i in v6d toshiba kame inria zeta linux linux-glibc solaris8; do
 151                 case $i in
 152                 v6d)
 153                         AC_EGREP_CPP(yes, [
 154 #include </usr/local/v6/include/sys/types.h>
 155 #ifdef __V6D__
 156 yes
 157 #endif],
 158                                 [v6type=$i; v6lib=v6;
 159                                 v6libdir=/usr/local/v6/lib;
 160                                 CFLAGS="-I/usr/local/v6/include $CFLAGS"])
 161                         ;;
 162                 toshiba)
 163                         AC_EGREP_CPP(yes, [
 164 #include <sys/param.h>
 165 #ifdef _TOSHIBA_INET6
 166 yes
 167 #endif],
 168                                 [v6type=$i; v6lib=inet6;
 169                                 v6libdir=/usr/local/v6/lib;
 170                                 CFLAGS="-DINET6 $CFLAGS"])
 171                         ;;
 172                 kame)
 173                         AC_EGREP_CPP(yes, [
 174 #include <netinet/in.h>
 175 #ifdef __KAME__
 176 yes
 177 #endif],
 178                                 [v6type=$i; v6lib=inet6;
 179                                 v6libdir=/usr/local/v6/lib;
 180                                 CFLAGS="-DINET6 $CFLAGS"])
 181                         ;;
 182                 inria)
 183                         AC_EGREP_CPP(yes, [
 184 #include <netinet/in.h>
 185 #ifdef IPV6_INRIA_VERSION
 186 yes
 187 #endif],
 188                                 [v6type=$i; CFLAGS="-DINET6 $CFLAGS"])
 189                         ;;
 190                 zeta)
 191                         AC_EGREP_CPP(yes, [
 192 #include <sys/param.h>
 193 #ifdef _ZETA_MINAMI_INET6
 194 yes
 195 #endif],
 196                                 [v6type=$i; v6lib=inet6;
 197                                 v6libdir=/usr/local/v6/lib;
 198                                 CFLAGS="-DINET6 $CFLAGS"])
 199                         ;;
 200                 linux)
 201                         if test -d /usr/inet6; then
 202                                 v6type=$i
 203                                 v6lib=inet6
 204                                 v6libdir=/usr/inet6
 205                                 CFLAGS="-DINET6 $CFLAGS"
 206                         fi
 207                         ;;
 208                 linux-glibc)
 209                         AC_EGREP_CPP(yes, [
 210 #include <features.h>
 211 #if defined(__GLIBC__) && defined(__GLIBC_MINOR__)
 212 #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || __GLIBC__ > 2
 213 yes
 214 #endif
 215 #endif],
 216                         [v6type=$i; v6lib=inet6; CFLAGS="-DINET6 $CFLAGS"])
 217                         ;;
 218                 solaris8)
 219                         if test "`uname -s`" = "SunOS" && test "`uname -r`" = "5.8"; then
 220                                 v6type=$i
 221                                 v6lib=inet6
 222                                 [CFLAGS="-DINET6 -DSOLARIS8_INET6 $CFLAGS"]
 223                         fi
 224                         ;;
 225                 esac
 226                 if test "$v6type" != "unknown"; then
 227                         break
 228                 fi
 229         done
 230
 231         if test "$v6lib" != "none"; then
 232                 for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do
 233                         if test -d $dir -a -f $dir/lib$v6lib.a; then
 234                                 LIBS="-L$dir $LIBS -l$v6lib"
 235                                 break
 236                         fi
 237                 done
 238                 enable_ipv6="yes"
 239         else
 240                 enable_ipv6="no"
 241         fi
 242         AC_MSG_RESULT(["$v6type, $v6lib"])
 243 ])
 244
 245 #
 246 # AC_WIRESHARK_GETHOSTBY_LIB_CHECK
 247 #
 248 # Checks whether we need "-lnsl" to get "gethostby*()", which we use
 249 # in "resolv.c".
 250 #
 251 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
 252 # GNU Autoconf 2.13; the comment came from there.
 253 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
 254 #
 255 AC_DEFUN([AC_WIRESHARK_GETHOSTBY_LIB_CHECK],
 256 [
 257     # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
 258     # to get the SysV transport functions.
 259     # chad@anasazi.com says the Pyramid MIS-ES running DC/OSx (SVR4)
 260     # needs -lnsl.
 261     # The nsl library prevents programs from opening the X display
 262     # on Irix 5.2, according to dickey@clark.net.
 263     AC_CHECK_FUNC(gethostbyname, ,
 264         AC_CHECK_LIB(nsl, gethostbyname, NSL_LIBS="-lnsl"))
 265     AC_SUBST(NSL_LIBS)
 266 ])
 267
 268 #
 269 # AC_WIRESHARK_SOCKET_LIB_CHECK
 270 #
 271 # Checks whether we need "-lsocket" to get "socket()", which is used
 272 # by libpcap on some platforms - and, in effect, "gethostby*()" on
 273 # most if not all platforms (so that it can use NIS or DNS or...
 274 # to look up host names).
 275 #
 276 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
 277 # GNU Autoconf 2.13; the comment came from there.
 278 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
 279 #
 280 # We use "connect" because that's what AC_PATH_XTRA did.
 281 #
 282 AC_DEFUN([AC_WIRESHARK_SOCKET_LIB_CHECK],
 283 [
 284     # lieder@skyler.mavd.honeywell.com says without -lsocket,
 285     # socket/setsockopt and other routines are undefined under SCO ODT
 286     # 2.0.  But -lsocket is broken on IRIX 5.2 (and is not necessary
 287     # on later versions), says simon@lia.di.epfl.ch: it contains
 288     # gethostby* variants that don't use the nameserver (or something).
 289     # -lsocket must be given before -lnsl if both are needed.
 290     # We assume that if connect needs -lnsl, so does gethostbyname.
 291     AC_CHECK_FUNC(connect, ,
 292       AC_CHECK_LIB(socket, connect, SOCKET_LIBS="-lsocket",
 293                 AC_MSG_ERROR(Function 'socket' not found.), $NSL_LIBS))
 294     AC_SUBST(SOCKET_LIBS)
 295 ])
 296
 297 #
 298 # AC_WIRESHARK_PCAP_CHECK
 299 #
 300 AC_DEFUN([AC_WIRESHARK_PCAP_CHECK],
 301 [
 302         if test -z "$pcap_dir"
 303         then
 304           # Pcap header checks
 305           # XXX need to set a var AC_CHECK_HEADER(pcap.h,,)
 306
 307           #
 308           # The user didn't specify a directory in which libpcap resides;
 309           # we assume that the current library search path will work,
 310           # but we may have to look for the header in a "pcap"
 311           # subdirectory of "/usr/include" or "/usr/local/include",
 312           # as some systems apparently put "pcap.h" in a "pcap"
 313           # subdirectory, and we also check "$prefix/include" - and
 314           # "$prefix/include/pcap", in case $prefix is set to
 315           # "/usr/include" or "/usr/local/include".
 316           #
 317           # XXX - should we just add "$prefix/include" to the include
 318           # search path and "$prefix/lib" to the library search path?
 319           #
 320           AC_MSG_CHECKING(for extraneous pcap header directories)
 321           found_pcap_dir=""
 322           pcap_dir_list="/usr/include/pcap $prefix/include/pcap $prefix/include"
 323           if test "x$ac_cv_enable_usr_local" = "xyes" ; then
 324             pcap_dir_list="$pcap_dir_list /usr/local/include/pcap"
 325           fi
 326           for pcap_dir in $pcap_dir_list
 327           do
 328             if test -d $pcap_dir ; then
 329                 if test x$pcap_dir != x/usr/include -a x$pcap_dir != x/usr/local/include ; then
 330                     CFLAGS="$CFLAGS -I$pcap_dir"
 331                     CPPFLAGS="$CPPFLAGS -I$pcap_dir"
 332                 fi
 333                 found_pcap_dir=" $found_pcap_dir -I$pcap_dir"
 334                 break
 335             fi
 336           done
 337
 338           if test "$found_pcap_dir" != "" ; then
 339             AC_MSG_RESULT(found --$found_pcap_dir added to CFLAGS)
 340           else
 341             AC_MSG_RESULT(not found)
 342           fi
 343         else
 344           #
 345           # The user specified a directory in which libpcap resides,
 346           # so add the "include" subdirectory of that directory to
 347           # the include file search path and the "lib" subdirectory
 348           # of that directory to the library search path.
 349           #
 350           # XXX - if there's also a libpcap in a directory that's
 351           # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
 352           # make us find the version in the specified directory,
 353           # as the compiler and/or linker will search that other
 354           # directory before it searches the specified directory.
 355           #
 356           CFLAGS="$CFLAGS -I$pcap_dir/include"
 357           CPPFLAGS="$CPPFLAGS -I$pcap_dir/include"
 358           AC_WIRESHARK_ADD_DASH_L(LDFLAGS, $pcap_dir/lib)
 359         fi
 360
 361         # Pcap header check
 362         AC_CHECK_HEADER(pcap.h,,
 363             AC_MSG_ERROR([[Header file pcap.h not found; if you installed libpcap
 364 from source, did you also do \"make install-incl\", and if you installed a
 365 binary package of libpcap, is there also a developer's package of libpcap,
 366 and did you also install that package?]]))
 367
 368         #
 369         # Check to see if we find "pcap_open_live" in "-lpcap".
 370         # Also check for various additional libraries that libpcap might
 371         # require.
 372         #
 373         AC_CHECK_LIB(pcap, pcap_open_live,
 374           [
 375             PCAP_LIBS=-lpcap
 376             AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library])
 377           ], [
 378             ac_wireshark_extras_found=no
 379             ac_save_LIBS="$LIBS"
 380             for extras in "-lcfg -lodm" "-lpfring"
 381             do
 382                 AC_MSG_CHECKING([for pcap_open_live in -lpcap with $extras])
 383                 LIBS="-lpcap $extras"
 384                 #
 385                 # XXX - can't we use AC_CHECK_LIB here?
 386                 #
 387                 AC_TRY_LINK(
 388                     [
 389 #       include <pcap.h>
 390                     ],
 391                     [
 392         pcap_open_live(NULL, 0, 0, 0, NULL);
 393                     ],
 394                     [
 395                         ac_wireshark_extras_found=yes
 396                         AC_MSG_RESULT([yes])
 397                         PCAP_LIBS="-lpcap $extras"
 398                         AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library])
 399                     ],
 400                     [
 401                         AC_MSG_RESULT([no])
 402                     ])
 403                 if test x$ac_wireshark_extras_found = xyes
 404                 then
 405                     break
 406                 fi
 407             done
 408             if test x$ac_wireshark_extras_found = xno
 409             then
 410                 AC_MSG_ERROR([Can't link with library libpcap.])
 411             fi
 412             LIBS=$ac_save_LIBS
 413           ], $SOCKET_LIBS $NSL_LIBS)
 414         AC_SUBST(PCAP_LIBS)
 415
 416         #
 417         # Check whether various variables and functions are defined by
 418         # libpcap.
 419         #
 420         ac_save_LIBS="$LIBS"
 421         AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
 422         LIBS="$PCAP_LIBS $SOCKET_LIBS $NSL_LIBS $LIBS"
 423         AC_TRY_LINK(
 424            [
 425 #       include <stdio.h>
 426         extern char *pcap_version;
 427            ],
 428            [
 429         printf ("%s\n", pcap_version);
 430            ],
 431            ac_cv_pcap_version_defined=yes,
 432            ac_cv_pcap_version_defined=no,
 433            [echo $ac_n "cross compiling; assumed OK... $ac_c"])
 434         if test "$ac_cv_pcap_version_defined" = yes ; then
 435                 AC_MSG_RESULT(yes)
 436                 AC_DEFINE(HAVE_PCAP_VERSION, 1, [Define if libpcap version is known])
 437         else
 438                 AC_MSG_RESULT(no)
 439         fi
 440         AC_CHECK_FUNCS(pcap_open_dead pcap_freecode pcap_breakloop)
 441         #
 442         # Later versions of Mac OS X 10.3[.x] ship a pcap.h that
 443         # doesn't define pcap_if_t but ship an 0.8[.x] libpcap,
 444         # so the library has "pcap_findalldevs()", but pcap.h
 445         # doesn't define "pcap_if_t" so you can't actually *use*
 446         # "pcap_findalldevs()".
 447         #
 448         # That even appears to be true of systems shipped with
 449         # 10.3.4, so it doesn't appear only to be a case of
 450         # Software Update not updating header files.
 451         #
 452         # (You can work around this by installing the 0.8 header
 453         # files.)
 454         #
 455         AC_CACHE_CHECK([whether pcap_findalldevs is present and usable],
 456           [ac_cv_func_pcap_findalldevs],
 457           [
 458             AC_LINK_IFELSE(
 459               [
 460                 AC_LANG_SOURCE(
 461                   [[
 462                     #include <pcap.h>
 463                     main()
 464                     {
 465                       pcap_if_t *devpointer;
 466                       char errbuf[1];
 467
 468                       pcap_findalldevs(&devpointer, errbuf);
 469                     }
 470                   ]])
 471               ],
 472               [
 473                 ac_cv_func_pcap_findalldevs=yes
 474               ],
 475               [
 476                 ac_cv_func_pcap_findalldevs=no
 477               ])
 478           ])
 479         #
 480         # Don't check for other new routines that showed up after
 481         # "pcap_findalldevs()" if we don't have a usable
 482         # "pcap_findalldevs()", so we don't end up using them if the
 483         # "pcap.h" is crufty and old and doesn't declare them.
 484         #
 485         if test $ac_cv_func_pcap_findalldevs = "yes" ; then
 486           AC_DEFINE(HAVE_PCAP_FINDALLDEVS, 1,
 487            [Define to 1 if you have the `pcap_findalldevs' function and a pcap.h that declares pcap_if_t.])
 488           AC_CHECK_FUNCS(pcap_datalink_val_to_name pcap_datalink_name_to_val)
 489           AC_CHECK_FUNCS(pcap_list_datalinks pcap_set_datalink pcap_lib_version)
 490           AC_CHECK_FUNCS(pcap_get_selectable_fd)
 491         fi
 492         LIBS="$ac_save_LIBS"
 493 ])
 494
 495 #
 496 # AC_WIRESHARK_ZLIB_CHECK
 497 #
 498 AC_DEFUN([AC_WIRESHARK_ZLIB_CHECK],
 499 [
 500         if test "x$zlib_dir" != "x"
 501         then
 502           #
 503           # The user specified a directory in which zlib resides,
 504           # so add the "include" subdirectory of that directory to
 505           # the include file search path and the "lib" subdirectory
 506           # of that directory to the library search path.
 507           #
 508           # XXX - if there's also a zlib in a directory that's
 509           # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
 510           # make us find the version in the specified directory,
 511           # as the compiler and/or linker will search that other
 512           # directory before it searches the specified directory.
 513           #
 514           wireshark_save_CFLAGS="$CFLAGS"
 515           CFLAGS="$CFLAGS -I$zlib_dir/include"
 516           wireshark_save_CPPFLAGS="$CPPFLAGS"
 517           CPPFLAGS="$CPPFLAGS -I$zlib_dir/include"
 518           wireshark_save_LIBS="$LIBS"
 519           AC_WIRESHARK_ADD_DASH_L(LIBS, $zlib_dir/lib)
 520         fi
 521
 522         #
 523         # Make sure we have "zlib.h".  If we don't, it means we probably
 524         # don't have zlib, so don't use it.
 525         #
 526         AC_CHECK_HEADER(zlib.h,,
 527           [
 528             if test "x$zlib_dir" != "x"
 529             then
 530               #
 531               # The user used "--with-zlib=" to specify a directory
 532               # containing zlib, but we didn't find the header file
 533               # there; that either means they didn't specify the
 534               # right directory or are confused about whether zlib
 535               # is, in fact, installed.  Report the error and give up.
 536               #
 537               AC_MSG_ERROR([zlib header not found in directory specified in --with-zlib])
 538             else
 539               if test "x$want_zlib" = "xyes"
 540               then
 541                 #
 542                 # The user tried to force us to use the library, but we
 543                 # couldn't find the header file; report an error.
 544                 #
 545                 AC_MSG_ERROR(Header file zlib.h not found.)
 546               else
 547                 #
 548                 # We couldn't find the header file; don't use the
 549                 # library, as it's probably not present.
 550                 #
 551                 want_zlib=no
 552               fi
 553             fi
 554           ])
 555
 556         if test "x$want_zlib" != "xno"
 557         then
 558                 #
 559                 # Well, we at least have the zlib header file.
 560                 #
 561                 # Check for "gzgets()" in zlib, because we need it, but
 562                 # some older versions of zlib don't have it.  It appears
 563                 # from the zlib ChangeLog that any released version of zlib
 564                 # with "gzgets()" should have the other routines we
 565                 # depend on, such as "gzseek()", "gztell()", and "zError()".
 566                 #
 567                 # Another reason why we require "gzgets()" is that
 568                 # some versions of zlib that didn't have it, such
 569                 # as 1.0.8, had a bug in "gzseek()" that meant that it
 570                 # doesn't work correctly on uncompressed files; this
 571                 # means we cannot use version 1.0.8.  (Unfortunately,
 572                 # that's the version that comes with recent X11 source,
 573                 # and many people who install XFree86 on their Slackware
 574                 # boxes don't realize that they should configure it to
 575                 # use the native zlib rather than building and installing
 576                 # the crappy old version that comes with XFree86.)
 577                 #
 578                 # I.e., we can't just avoid using "gzgets()", as
 579                 # versions of zlib without "gzgets()" are likely to have
 580                 # a broken "gzseek()".
 581                 #
 582                 AC_CHECK_LIB(z, gzgets,
 583                 [
 584                         if test "x$zlib_dir" != "x"
 585                         then
 586                                 #
 587                                 # Put the "-I" and "-L" flags for zlib at
 588                                 # the beginning of CFLAGS, CPPFLAGS, and
 589                                 # LIBS.
 590                                 #
 591                                 LIBS=""
 592                                 AC_WIRESHARK_ADD_DASH_L(LIBS, $zlib_dir/lib)
 593                                 LIBS="$LIBS -lz $wireshark_save_LIBS"
 594                         else
 595                                 LIBS="-lz $LIBS"
 596                         fi
 597                         AC_DEFINE(HAVE_LIBZ, 1, [Define to use libz library])
 598                 ],[
 599                         if test "x$zlib_dir" != "x"
 600                         then
 601                                 #
 602                                 # Restore the versions of CFLAGS, CPPFLAGS,
 603                                 # and LIBS before we added the "-with-zlib="
 604                                 # directory, as we didn't actually find
 605                                 # zlib there, or didn't find a zlib that
 606                                 # contains gzgets there.
 607                                 #
 608                                 CFLAGS="$wireshark_save_CFLAGS"
 609                                 CPPFLAGS="$wireshark_save_CPPFLAGS"
 610                                 LIBS="$wireshark_save_LIBS"
 611                         fi
 612                         want_zlib=no
 613                 ])
 614         fi
 615
 616         if test "x$want_zlib" != "xno"
 617         then
 618                 #
 619                 # Well, we at least have the zlib header file and a zlib
 620                 # with "gzgets()".
 621                 #
 622                 # Now check for "gzgets()" in zlib when linking with the
 623                 # linker flags for GTK+ applications; people often grab
 624                 # XFree86 source and build and install it on their systems,
 625                 # and they appear sometimes to misconfigure XFree86 so that,
 626                 # even on systems with zlib, it assumes there is no zlib,
 627                 # so the XFree86 build process builds and installs its
 628                 # own zlib in the X11 library directory.
 629                 #
 630                 # The XFree86 zlib is an older version that lacks
 631                 # "gzgets()", and that's the zlib with which Ethereal
 632                 # gets linked, so the build of Ethereal fails.
 633                 #
 634                 ac_save_CFLAGS="$CFLAGS"
 635                 ac_save_LIBS="$LIBS"
 636                 CFLAGS="$CFLAGS $GTK_CFLAGS"
 637                 LIBS="$GTK_LIBS -lz $LIBS"
 638                 AC_MSG_CHECKING([for gzgets missing when linking with X11])
 639                 AC_TRY_LINK_FUNC(gzgets, AC_MSG_RESULT(no),
 640                   [
 641                     AC_MSG_RESULT(yes)
 642                     AC_MSG_ERROR(old zlib found when linking with X11 - get rid of old zlib.)
 643                   ])
 644                 CFLAGS="$ac_save_CFLAGS"
 645                 LIBS="$ac_save_LIBS"
 646         fi
 647 ])
 648
 649 #
 650 # AC_WIRESHARK_LIBPCRE_CHECK
 651 #
 652 AC_DEFUN([AC_WIRESHARK_LIBPCRE_CHECK],
 653 [
 654         if test "x$pcre_dir" != "x"
 655         then
 656           #
 657           # The user specified a directory in which libpcre resides,
 658           # so add the "include" subdirectory of that directory to
 659           # the include file search path and the "lib" subdirectory
 660           # of that directory to the library search path.
 661           #
 662           # XXX - if there's also a libpcre in a directory that's
 663           # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
 664           # make us find the version in the specified directory,
 665           # as the compiler and/or linker will search that other
 666           # directory before it searches the specified directory.
 667           #
 668           wireshark_save_CFLAGS="$CFLAGS"
 669           CFLAGS="$CFLAGS -I$pcre_dir/include"
 670           wireshark_save_CPPFLAGS="$CPPFLAGS"
 671           CPPFLAGS="$CPPFLAGS -I$pcre_dir/include"
 672           wireshark_save_LIBS="$LIBS"
 673           LIBS="$LIBS -lpcre"
 674           wireshark_save_LDFLAGS="$LDFLAGS"
 675           LDFLAGS="$LDFLAGS -L$pcre_dir/lib"
 676         fi
 677
 678         #
 679         # Make sure we have "pcre.h".  If we don't, it means we probably
 680         # don't have libpcre, so don't use it.
 681         #
 682         AC_CHECK_HEADER(pcre.h,,
 683           [
 684             if test "x$pcre_dir" != "x"
 685             then
 686               #
 687               # The user used "--with-pcre=" to specify a directory
 688               # containing libpcre, but we didn't find the header file
 689               # there; that either means they didn't specify the
 690               # right directory or are confused about whether libpcre
 691               # is, in fact, installed.  Report the error and give up.
 692               #
 693               AC_MSG_ERROR([libpcre header not found in directory specified in --with-pcre])
 694             else
 695               if test "x$want_pcre" = "xyes"
 696               then
 697                 #
 698                 # The user tried to force us to use the library, but we
 699                 # couldn't find the header file; report an error.
 700                 #
 701                 AC_MSG_ERROR(Header file pcre.h not found.)
 702               else
 703                 #
 704                 # We couldn't find the header file; don't use the
 705                 # library, as it's probably not present.
 706                 #
 707                 want_pcre=no
 708               fi
 709             fi
 710           ])
 711
 712         if test "x$want_pcre" != "xno"
 713         then
 714                 #
 715                 # Well, we at least have the pcre header file.
 716                 #
 717                 # We're only using standard functions from libpcre,
 718                 # so we don't need to perform extra checks.
 719                 #
 720                 AC_CHECK_LIB(pcre, pcre_compile,
 721                 [
 722                         if test "x$pcre_dir" != "x"
 723                         then
 724                                 #
 725                                 # Put the "-I" and "-L" flags for pcre at
 726                                 # the beginning of CFLAGS, CPPFLAGS,
 727                                 # LDFLAGS, and LIBS.
 728                                 #
 729                                 PCRE_LIBS="-L$pcre_dir/lib -lpcre $wireshark_save_LIBS"
 730                         else
 731                                 PCRE_LIBS="-lpcre"
 732                         fi
 733                         AC_DEFINE(HAVE_LIBPCRE, 1, [Define to use libpcre library])
 734                 ],[
 735                         if test "x$pcre_dir" != "x"
 736                         then
 737                                 #
 738                                 # Restore the versions of CFLAGS, CPPFLAGS,
 739                                 # LDFLAGS, and LIBS before we added the
 740                                 # "--with-pcre=" directory, as we didn't
 741                                 # actually find pcre there.
 742                                 #
 743                                 CFLAGS="$wireshark_save_CFLAGS"
 744                                 CPPFLAGS="$wireshark_save_CPPFLAGS"
 745                                 LDFLAGS="$wireshark_save_LDFLAGS"
 746                                 LIBS="$wireshark_save_LIBS"
 747                                 PCRE_LIBS=""
 748                         fi
 749                         want_pcre=no
 750                 ])
 751                 AC_SUBST(PCRE_LIBS)
 752         fi
 753 ])
 754
 755 #
 756 # AC_WIRESHARK_LIBLUA_CHECK
 757 #
 758 AC_DEFUN([AC_WIRESHARK_LIBLUA_CHECK],[
 759
 760         if test "x$lua_dir" != "x"
 761         then
 762                 #
 763                 # The user specified a directory in which liblua resides,
 764                 # so add the "include" subdirectory of that directory to
 765                 # the include file search path and the "lib" subdirectory
 766                 # of that directory to the library search path.
 767                 #
 768                 # XXX - if there's also a liblua in a directory that's
 769                 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
 770                 # make us find the version in the specified directory,
 771                 # as the compiler and/or linker will search that other
 772                 # directory before it searches the specified directory.
 773                 #
 774                 wireshark_save_CFLAGS="$CFLAGS"
 775                 CFLAGS="$CFLAGS -I$lua_dir/include"
 776                 wireshark_save_CPPFLAGS="$CPPFLAGS"
 777                 CPPFLAGS="$CPPFLAGS -I$lua_dir/include"
 778                 wireshark_save_LIBS="$LIBS"
 779                 LIBS="$LIBS -L$lua_dir/lib -llua"
 780                 wireshark_save_LDFLAGS="$LDFLAGS"
 781                 LDFLAGS="$LDFLAGS -L$lua_dir/lib"
 782         else
 783                 #
 784                 # The user specified no directory in which liblua resides,
 785                 # so just add "-llua -lliblua" to the used libs.
 786                 #
 787                 wireshark_save_CFLAGS="$CFLAGS"
 788                 wireshark_save_CPPFLAGS="$CPPFLAGS"
 789                 wireshark_save_LDFLAGS="$LDFLAGS"
 790                 wireshark_save_LIBS="$LIBS"
 791                 LIBS="$LIBS -llua"
 792         fi
 793
 794         #
 795         # Make sure we have "lua.h", "lualib.h" and "lauxlib.h".  If we don't, it means we probably
 796         # don't have liblua, so don't use it.
 797         #
 798         AC_CHECK_HEADERS(lua.h lualib.h lauxlib.h,,
 799         [
 800                 if test "x$lua_dir" != "x"
 801                 then
 802                         #
 803                         # The user used "--with-lua=" to specify a directory
 804                         # containing liblua, but we didn't find the header file
 805                         # there; that either means they didn't specify the
 806                         # right directory or are confused about whether liblua
 807                         # is, in fact, installed.  Report the error and give up.
 808                         #
 809                         AC_MSG_ERROR([liblua header not found in directory specified in --with-lua])
 810                 else
 811                         if test "x$want_lua" = "xyes"
 812                         then
 813                                 #
 814                                 # The user tried to force us to use the library, but we
 815                                 # couldn't find the header file; report an error.
 816                                 #
 817                                 AC_MSG_ERROR(Header file lua.h not found.)
 818                         else
 819                                 #
 820                                 # We couldn't find the header file; don't use the
 821                                 # library, as it's probably not present.
 822                                 #
 823                                 want_lua=no
 824                         fi
 825                 fi
 826         ])
 827
 828         if test "x$want_lua" != "xno"
 829         then
 830                 #
 831                 # Well, we at least have the lua header file.
 832                 #
 833                 # let's check if the libs are there
 834                 #
 835
 836                 # At least on Suse 9.3 systems, liblualib needs linking
 837                 # against libm.
 838                 LIBS="$LIBS $LUA_LIBS -lm"
 839
 840                 AC_CHECK_LIB(lua, lua_call,
 841                 [
 842                         if test "x$lua_dir" != "x"
 843                         then
 844                                 #
 845                                 # Put the "-I" and "-L" flags for lua at
 846                                 # the beginning of CFLAGS, CPPFLAGS,
 847                                 # LDFLAGS, and LIBS.
 848                                 #
 849                                 LUA_LIBS="-L$lua_dir/lib -llua"
 850                                 LUA_INCLUDES="-I$lua_dir/include"
 851                         else
 852                                 LUA_LIBS="-llua"
 853                                 LUA_INCLUDES=""
 854                         fi
 855
 856                         #
 857                         # we got lua, now look for lualib
 858                         #
 859                         AC_CHECK_LIB(lualib, luaL_openlib,
 860                         [
 861                                 #
 862                                 # we have 5.0
 863                                 #
 864                                 LUA_LIBS="$LUA_LIBS -llualib"
 865                         ],[
 866                                 #
 867                                 # no lualib, in 5.1 there's only liblua
 868                                 # do we have 5.1?
 869                                 #
 870
 871                                 LIBS="$wireshark_save_LIBS $LUA_LIBS"
 872
 873                                 AC_CHECK_LIB(lua, luaL_register,
 874                                 [
 875                                     #
 876                                     #  Lua 5.1 found
 877                                     #
 878                                     AC_DEFINE(HAVE_LUA_5_1, 1, [Define to use Lua 5.1])
 879                                 ],[
 880                                     #
 881                                     # No, it is not 5.1
 882                                     #
 883                                     if test "x$lua_dir" != "x"
 884                                     then
 885                                         #
 886                                         # Restore the versions of CFLAGS, CPPFLAGS,
 887                                         # LDFLAGS, and LIBS before we added the
 888                                         # "--with-lua=" directory, as we didn't
 889                                         # actually find lua there.
 890                                         #
 891                                         CFLAGS="$wireshark_save_CFLAGS"
 892                                         CPPFLAGS="$wireshark_save_CPPFLAGS"
 893                                         LDFLAGS="$wireshark_save_LDFLAGS"
 894                                         LIBS="$wireshark_save_LIBS"
 895                                         LUA_LIBS=""
 896                                     fi
 897                                     # User requested --with-lua but it isn't available
 898                                     if test "x$want_lua" = "xyes"
 899                                     then
 900                                         AC_MSG_ERROR(Linking with liblualib failed.)
 901                                     fi
 902                                     want_lua=no
 903                                 ])
 904                         ])
 905                 ],[
 906                         #
 907                         # Restore the versions of CFLAGS, CPPFLAGS,
 908                         # LDFLAGS, and LIBS before we added the
 909                         # "--with-lua=" directory, as we didn't
 910                         # actually find lua there.
 911                         #
 912                         CFLAGS="$wireshark_save_CFLAGS"
 913                         CPPFLAGS="$wireshark_save_CPPFLAGS"
 914                         LDFLAGS="$wireshark_save_LDFLAGS"
 915                         LIBS="$wireshark_save_LIBS"
 916                         LUA_LIBS=""
 917                         # User requested --with-lua but it isn't available
 918                         if test "x$want_lua" = "xyes"
 919                         then
 920                                 AC_MSG_ERROR(Linking with liblua failed.)
 921                         fi
 922                         want_lua=no
 923                 ])
 924
 925         CFLAGS="$wireshark_save_CFLAGS"
 926         CPPFLAGS="$wireshark_save_CPPFLAGS"
 927         LDFLAGS="$wireshark_save_LDFLAGS"
 928         LIBS="$wireshark_save_LIBS"
 929         AC_SUBST(LUA_LIBS)
 930         AC_SUBST(LUA_INCLUDES)
 931
 932         fi
 933 ])
 934
 935 #
 936 # AC_WIRESHARK_NETSNMP_CHECK
 937 #
 938 AC_DEFUN([AC_WIRESHARK_NETSNMP_CHECK],
 939 [
 940         dnl get the net-snmp-config binary
 941         if test "x$netsnmpconfig" = "x" ; then
 942                 #
 943                 # The user didn't specify where net-snmp-config is
 944                 # located; search for it.
 945                 #
 946                 AC_PATH_PROG(NETSNMPCONFIG, net-snmp-config)
 947         else
 948                 NETSNMPCONFIG=$netsnmpconfig
 949                 if test ! -x $NETSNMPCONFIG -o ! -f $NETSNMPCONFIG ; then
 950                         NETSNMPCONFIG=$netsnmpconfig/bin/net-snmp-config
 951                         if test ! -x $NETSNMPCONFIG -o ! -f $NETSNMPCONFIG ; then
 952                                 AC_MSG_ERROR(Invalid net-snmp-config: $netsnmpconfig)
 953                         fi
 954                 fi
 955         fi
 956
 957         #
 958         # XXX - check whether $NETSNMPCONFIG is executable?
 959         # if test "x$NETSNMPCONFIG" != "xno" -a "x$NETSNMPCONFIG" != "x" -a -x "$NETSNMPCONFIG" ; then
 960         # We already did that if it was set; presumably AC_PATH_PROG
 961         # will fail if it doesn't find an executable version.
 962         #
 963         if test "x$NETSNMPCONFIG" != "x" ; then
 964                 dnl other choices for flags to use here: could also use
 965                 dnl --prefix or --exec-prefix if you don't want the full list.
 966
 967                 #
 968                 # Save the current settings of CFLAGS and CPPFLAGS, and add
 969                 # the output of "$NETSNMPCONFIG --cflags" to it, so that when
 970                 # searching for the Net-SNMP headers, we look in whatever
 971                 # directory that output specifies.
 972                 #
 973                 wireshark_save_CFLAGS="$CFLAGS"
 974                 wireshark_save_CPPFLAGS="$CPPFLAGS"
 975                 CFLAGS="$CFLAGS `$NETSNMPCONFIG --cflags`"
 976                 CPPFLAGS="$CPPFLAGS `$NETSNMPCONFIG --cflags`"
 977
 978                 AC_CHECK_HEADERS(net-snmp/net-snmp-config.h net-snmp/library/default_store.h)
 979                 if test "x$ac_cv_header_net_snmp_net_snmp_config_h" = "xyes" -a "x$ac_cv_header_net_snmp_library_default_store_h" = "xyes" ; then
 980                         SNMP_LIBS=`$NETSNMPCONFIG --libs`
 981                         if echo "$SNMP_LIBS" | grep crypto >/dev/null  && test "x$SSL_LIBS" = "x"; then
 982                                 if test "x$want_netsnmp" = "xyes" ; then
 983                                         AC_MSG_ERROR(Net-SNMP requires openssl but ssl not enabled)
 984                                 else
 985                                         AC_MSG_RESULT(Net-SNMP requires openssl but ssl not enabled - disabling Net-SNMP)
 986                                 fi
 987                                 CFLAGS="$wireshark_save_CFLAGS"
 988                                 CPPFLAGS="$wireshark_save_CPPFLAGS"
 989                                 SNMP_LIBS=
 990                         else
 991                                 AC_DEFINE(HAVE_NET_SNMP, 1, [Define to enable support for Net-SNMP])
 992                                 have_net_snmp="yes"
 993                         fi
 994                 else
 995                         if test "x$want_netsnmp" = "xyes" ; then
 996                                 AC_MSG_ERROR(Net-SNMP not found)
 997                         else
 998                                 #
 999                                 # Restore the versions of CFLAGS and
1000                                 # CPPFLAGS before we added the output
1001                                 # of '$NETSNMPCONFIG --cflags", as we
1002                                 # didn't actually find Net-SNMP there.
1003                                 #
1004                                 CFLAGS="$wireshark_save_CFLAGS"
1005                                 CPPFLAGS="$wireshark_save_CPPFLAGS"
1006                         fi
1007                 fi
1008         fi
1009 ])
1010
1011 #
1012 # AC_WIRESHARK_UCDSNMP_CHECK
1013 #
1014 AC_DEFUN([AC_WIRESHARK_UCDSNMP_CHECK],
1015 [
1016         if test "x$ucdsnmp_dir" != "x"
1017         then
1018                 #
1019                 # The user specified a directory in which UCD SNMP resides,
1020                 # so add the "include" subdirectory of that directory to
1021                 # the include file search path and the "lib" subdirectory
1022                 # of that directory to the library search path.
1023                 #
1024                 # XXX - if there's also a libpcap in a directory that's
1025                 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
1026                 # make us find the version in the specified directory,
1027                 # as the compiler and/or linker will search that other
1028                 # directory before it searches the specified directory.
1029                 #
1030                 CFLAGS="$CFLAGS -I$ucdsnmp_dir/include"
1031                 CPPFLAGS="$CPPFLAGS -I$ucdsnmp_dir/include"
1032                 AC_WIRESHARK_ADD_DASH_L(LDFLAGS, $ucdsnmp_dir/lib)
1033         fi
1034
1035         #
1036         # Check for one of the UCD SNMP header files we include,
1037         # to see whether we have UCD SNMP installed.
1038         #
1039         AC_CHECK_HEADER(ucd-snmp/ucd-snmp-config.h,
1040         [
1041                 #
1042                 # UCD SNMP or Net-SNMP might require various helper
1043                 # libraries on various platforms, such as "-ldes425"
1044                 # in "/usr/kerberos/lib" on some versions of Red
1045                 # Hat Linux, or "-lkstat" on Solaris.
1046                 #
1047                 # It might also require "-lcrypto" on some platforms;
1048                 # if the user didn't specify --with-ssl, we check
1049                 # whether it would have made a difference and, if so,
1050                 # we tell the user that they needed to request it.
1051                 # (There are annoying licensing issues with it and
1052                 # GPL'ed code, so we don't include it by default.)
1053                 #
1054                 # XXX - autoconf really needs a way to test for
1055                 # a given routine in a given library *and* to test
1056                 # whether additional "-L"/"-R"/whatever flags are
1057                 # needed *before* the "-l" flag for the library
1058                 # and to test whether additional libraries are
1059                 # needed after the library *and* to cache all that
1060                 # information.
1061                 #
1062                 wireshark_save_LIBS="$LIBS"
1063                 found_sprint_realloc_objid=no
1064                 for extras in "" "-L/usr/kerberos/lib -ldes425" "-lkstat"
1065                 do
1066                         LIBS="-lsnmp $extras $SOCKET_LIBS $NSL_LIBS $SSL_LIBS"
1067                         if test -z "$extras"
1068                         then
1069                                 AC_MSG_CHECKING([whether UCD SNMP includes sprint_realloc_objid])
1070                         else
1071                                 AC_MSG_CHECKING([whether UCD SNMP includes sprint_realloc_objid (linking with $extras)])
1072                         fi
1073                         AC_TRY_LINK(
1074                             [
1075                             ],
1076                             [
1077                                 sprint_realloc_objid();
1078                             ],
1079                             [
1080                                 #
1081                                 # We found "sprint_realloc_objid()",
1082                                 # and required the libraries in
1083                                 # extras as well.
1084                                 #
1085                                 AC_MSG_RESULT(yes)
1086                                 SNMP_LIBS="-lsnmp $extras"; break;
1087                                 found_sprint_realloc_objid=yes
1088                                 break
1089                             ],
1090                             [
1091                                 #
1092                                 # The link failed.  If they didn't ask
1093                                 # for SSL, try linking with -lcrypto
1094                                 # as well, and if *that* succeeds,
1095                                 # tell them they'll need to specify
1096                                 # --want-ssl.
1097                                 #
1098                                 AC_MSG_RESULT(no)
1099                                 if test "x$want_ssl" = "xno"
1100                                 then
1101                                         LIBS="$LIBS -lcrypto"
1102                                         AC_TRY_LINK(
1103                                             [
1104                                             ],
1105                                             [
1106                                                 sprint_realloc_objid();
1107                                             ],
1108                                             [
1109                                                 #
1110                                                 # It worked with -lcrypto; tell
1111                                                 # them they'll need to specify
1112                                                 # --with-ssl.
1113                                                 #
1114                                                 AC_MSG_ERROR([UCD SNMP requires -lcrypto but --with-ssl not specified])
1115                                             ])
1116                                 fi
1117                             ])
1118                 done
1119                 LIBS="$wireshark_save_LIBS"
1120
1121                 #
1122                 # If we didn't find "sprint_realloc_objid()", fail.
1123                 # Either the user needs a newer version of UCD SNMP
1124                 # with "sprint_realloc_objid()", or they may need to
1125                 # specify "--with-ssl".
1126                 #
1127                 if test "$found_snmp_sprint_realloc_objid" = no; then
1128                     AC_MSG_ERROR([UCD SNMP header files found, but sprint_realloc_objid not found in SNMP library.])
1129                 fi
1130
1131                 #
1132                 # We found it, so we have UCD SNMP.
1133                 #
1134                 AC_DEFINE(HAVE_UCD_SNMP, 1, [Define to enable support for UCD-SNMP])
1135                 have_ucd_snmp="yes"
1136         ],[
1137                 #
1138                 # No, we don't have it.
1139                 # If the user explicitly asked for UCD SNMP, fail,
1140                 # otherwise just don't use the UCD SNMP library.
1141                 #
1142                 if test "x$want_ucdsnmp" = "xyes" ; then
1143                         AC_MSG_ERROR(Header file ucd-snmp/snmp.h not found.)
1144                 fi
1145         ])
1146 ])
1147
1148 #
1149 # AC_WIRESHARK_RPM_CHECK
1150 # Looks for the rpm program, and checks to see if we can redefine "_topdir".
1151 #
1152 AC_DEFUN([AC_WIRESHARK_RPM_CHECK],
1153 [
1154         AC_CHECK_PROG(ac_cv_wireshark_have_rpm, rpm, "yes", "no")
1155         if test "x$ac_cv_wireshark_have_rpm" = "xyes"; then
1156                 rpm --define '_topdir /tmp' > /dev/null 2>&1
1157                 AC_MSG_CHECKING(to see if we can redefine _topdir)
1158                 if test $? -eq 0 ; then
1159                         AC_MSG_RESULT(yes)
1160                         HAVE_RPM=yes
1161                 else
1162                         AC_MSG_RESULT(no.  You'll have to build packages manually.)
1163                         HAVE_RPM=no
1164                 fi
1165         fi
1166 ])
1167
1168 #
1169 # AC_WIRESHARK_GNU_SED_CHECK
1170 # Checks if GNU sed is the first sed in PATH.
1171 #
1172 AC_DEFUN([AC_WIRESHARK_GNU_SED_CHECK],
1173 [
1174         AC_MSG_CHECKING(for GNU sed as first sed in PATH)
1175         if  ( sh -c "sed --version" </dev/null 2> /dev/null | grep "GNU sed" 2>&1 > /dev/null ) ;  then
1176                 AC_MSG_RESULT(yes)
1177                 HAVE_GNU_SED=yes
1178         else
1179                 AC_MSG_RESULT(no)
1180                 HAVE_GNU_SED=no
1181         fi
1182 ])
1183
1184 #
1185 # AC_WIRESHARK_ADNS_CHECK
1186 #
1187 AC_DEFUN([AC_WIRESHARK_ADNS_CHECK],
1188 [
1189         want_adns=defaultyes
1190
1191         if test "x$want_adns" = "xdefaultyes"; then
1192                 want_adns=yes
1193                 withval=/usr/local
1194                 if test -d "$withval"; then
1195                         AC_WIRESHARK_ADD_DASH_L(LDFLAGS, ${withval}/lib)
1196                 fi
1197         fi
1198
1199         if test "x$want_adns" = "xyes"; then
1200                 AC_CHECK_LIB(adns, adns_init,
1201                   [
1202                     ADNS_LIBS=-ladns
1203                 AC_DEFINE(HAVE_GNU_ADNS, 1, [Define to use GNU ADNS library])
1204                 have_good_adns=yes
1205                   ],, $SOCKET_LIBS $NSL_LIBS
1206                 )
1207         else
1208                 AC_MSG_RESULT(not required)
1209         fi
1210 ])
1211
1212
1213 #
1214 # AC_WIRESHARK_KRB5_CHECK
1215 #
1216 AC_DEFUN([AC_WIRESHARK_KRB5_CHECK],
1217 [
1218         wireshark_save_CFLAGS="$CFLAGS"
1219         wireshark_save_CPPFLAGS="$CPPFLAGS"
1220         if test "x$krb5_dir" != "x"
1221         then
1222           #
1223           # The user specified a directory in which kerberos resides,
1224           # so add the "include" subdirectory of that directory to
1225           # the include file search path and the "lib" subdirectory
1226           # of that directory to the library search path.
1227           #
1228           # XXX - if there's also a kerberos in a directory that's
1229           # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
1230           # make us find the version in the specified directory,
1231           # as the compiler and/or linker will search that other
1232           # directory before it searches the specified directory.
1233           #
1234           CFLAGS="$CFLAGS -I$krb5_dir/include"
1235           CPPFLAGS="$CPPFLAGS -I$krb5_dir/include"
1236           ac_heimdal_version=`grep heimdal $krb5_dir/include/krb5.h | head -n 1 | sed 's/^.*heimdal.*$/HEIMDAL/'`
1237           ac_mit_version=`grep 'Massachusetts Institute of Technology' $krb5_dir/include/krb5.h | head -n 1 | sed 's/^.*Massachusetts Institute of Technology.*$/MIT/'`
1238           ac_krb5_version="$ac_heimdal_version$ac_mit_version"
1239           if test "x$ac_krb5_version" = "xHEIMDAL"
1240               KRB5_LIBS="-L$krb5_dir/lib -lkrb5 -lasn1 $SSL_LIBS -lroken -lcrypt"
1241           then
1242               KRB5_LIBS="-L$krb5_dir/lib -lkrb5 -lk5crypto -lcom_err"
1243           fi
1244           if test "x$ac_krb5_version" = "xMIT"
1245           then
1246             AC_DEFINE(HAVE_MIT_KERBEROS, 1, [Define to use MIT kerberos])
1247           fi
1248         else
1249           AC_PATH_PROG(KRB5_CONFIG, krb5-config)
1250           if test -x "$KRB5_CONFIG"
1251           then
1252             KRB5_FLAGS=`"$KRB5_CONFIG" --cflags`
1253             KRB5_LIBS=`"$KRB5_CONFIG" --libs`
1254             CFLAGS="$CFLAGS $KRB5_FLAGS"
1255             CPPFLAGS="$CPPFLAGS $KRB5_FLAGS"
1256             #
1257             # If -lcrypto is in KRB5_FLAGS, we require it to build
1258             # with Heimdal/MIT.  We don't want to built with it by
1259             # default, due to annoying license incompatibilities
1260             # between the OpenSSL license and the GPL, so:
1261             #
1262             #   if SSL_LIBS is set to a non-empty string, we
1263             #   remove -lcrypto from KRB5_LIBS and replace
1264             #   it with SSL_LIBS;
1265             #
1266             #   if SSL_LIBS is not set to a non-empty string
1267             #   we fail with an appropriate error message.
1268             #
1269             case "$KRB5_LIBS" in
1270             *-lcrypto*)
1271                 if test ! -z "$SSL_LIBS"
1272                 then
1273                     KRB5_LIBS=`echo $KRB5_LIBS | sed 's/-lcrypto//'`
1274                     KRB5_LIBS="$KRB5_LIBS $SSL_LIBS"
1275                 else
1276                     AC_MSG_ERROR([Kerberos library requires -lcrypto but --with-ssl not specified])
1277                 fi
1278                 ;;
1279             esac
1280             ac_krb5_version=`"$KRB5_CONFIG" --version | head -n 1 | sed -e 's/^.*heimdal.*$/HEIMDAL/' -e 's/^Kerberos .*$/MIT/'`
1281           fi
1282         fi
1283
1284         #
1285         # Make sure we have "krb5.h".  If we don't, it means we probably
1286         # don't have kerberos, so don't use it.
1287         #
1288         AC_CHECK_HEADER(krb5.h,,
1289           [
1290             if test "x$krb5_dir" != "x"
1291             then
1292               #
1293               # The user used "--with-krb5=" to specify a directory
1294               # containing kerberos, but we didn't find the header file
1295               # there; that either means they didn't specify the
1296               # right directory or are confused about whether kerberos
1297               # is, in fact, installed.  Report the error and give up.
1298               #
1299               AC_MSG_ERROR([kerberos header not found in directory specified in --with-krb5])
1300             else
1301               if test "x$want_krb5" = "xyes"
1302               then
1303                 #
1304                 # The user tried to force us to use the library, but we
1305                 # couldn't find the header file; report an error.
1306                 #
1307                 AC_MSG_ERROR(Header file krb5.h not found.)
1308               else
1309                 #
1310                 # We couldn't find the header file; don't use the
1311                 # library, as it's probably not present.
1312                 #
1313                 want_krb5=no
1314                 AC_MSG_RESULT(No Heimdal or MIT header found - disabling dissection for some kerberos data in packet decoding)
1315               fi
1316             fi
1317           ])
1318
1319         if test "x$want_krb5" != "xno"
1320         then
1321             #
1322             # Well, we at least have the krb5 header file.
1323             # Check whether this is Heimdal or MIT.
1324             #
1325             AC_MSG_CHECKING(whether the Kerberos library is Heimdal or MIT)
1326             if test "x$ac_krb5_version" = "xHEIMDAL" -o "x$ac_krb5_version" = "xMIT"
1327             then
1328                 #
1329                 # Yes.
1330                 # Check whether we have krb5_kt_resolve - and whether
1331                 # we need to link with -lresolv when linking with
1332                 # the Kerberos library.
1333                 #
1334                 AC_MSG_RESULT($ac_krb5_version)
1335                 wireshark_save_LIBS="$LIBS"
1336                 found_krb5_kt_resolve=no
1337                 for extras in "" "-lresolv"
1338                 do
1339                     LIBS="$KRB5_LIBS $extras"
1340                     if test -z "$extras"
1341                     then
1342                         AC_MSG_CHECKING([whether $ac_krb5_version includes krb5_kt_resolve])
1343                     else
1344                         AC_MSG_CHECKING([whether $ac_krb5_version includes krb5_kt_resolve (linking with $extras)])
1345                     fi
1346                     AC_TRY_LINK(
1347                         [
1348                         ],
1349                         [
1350                             krb5_kt_resolve();
1351                         ],
1352                         [
1353                             #
1354                             # We found "krb5_kt_resolve()", and required
1355                             # the libraries in extras as well.
1356                             #
1357                             AC_MSG_RESULT(yes)
1358                             KRB5_LIBS="$LIBS"
1359                             AC_DEFINE(HAVE_KERBEROS, 1, [Define to use kerberos])
1360                             if test "x$ac_krb5_version" = "xHEIMDAL"
1361                             then
1362                                 AC_DEFINE(HAVE_HEIMDAL_KERBEROS, 1, [Define to use heimdal kerberos])
1363                             elif test "x$ac_krb5_version" = "xMIT"
1364                             then
1365                                 AC_DEFINE(HAVE_MIT_KERBEROS, 1, [Define to use MIT kerberos])
1366                             fi
1367                             found_krb5_kt_resolve=yes
1368                             break
1369                         ],
1370                         [
1371                             AC_MSG_RESULT(no)
1372                         ])
1373                 done
1374                 if test "$found_krb5_kt_resolve" = no
1375                 then
1376                     #
1377                     # We didn't find "krb5_kt_resolve()" in the
1378                     # Kerberos library, even when we tried linking
1379                     # with -lresolv; we can't link with kerberos.
1380                     #
1381                     if test "x$want_krb5" = "xyes"
1382                     then
1383                         #
1384                         # The user tried to force us to use the library,
1385                         # but we can't do so; report an error.
1386                         #
1387                         AC_MSG_ERROR(Usable $ac_krb5_version not found)
1388                     else
1389                         #
1390                         # Restore the versions of CFLAGS and CPPFLAGS
1391                         # from before we added the flags for Kerberos.
1392                         #
1393                         AC_MSG_RESULT(Usable $ac_krb5_version not found - disabling dissection for some kerberos data in packet decoding)
1394                         CFLAGS="$wireshark_save_CFLAGS"
1395                         CPPFLAGS="$wireshark_save_CPPFLAGS"
1396                         KRB5_LIBS=""
1397                         want_krb5=no
1398                     fi
1399                 else
1400                     #
1401                     # We can link with Kerberos; see whether krb5.h
1402                     # defines KEYTYPE_ARCFOUR_56 (where "defines" means
1403                     # "as a #define or as an enum member).
1404                     #
1405                     AC_MSG_CHECKING([whether krb5.h defines KEYTYPE_ARCFOUR_56])
1406                     AC_COMPILE_IFELSE(
1407                       [
1408                         AC_LANG_SOURCE(
1409                           [[
1410                             #include <krb5.h>
1411                             #include <stdio.h>
1412
1413                             main()
1414                             {
1415                               printf("%u\n", KEYTYPE_ARCFOUR_56);
1416                             }
1417                           ]])
1418                       ],
1419                       [
1420                         AC_MSG_RESULT(yes)
1421                         AC_DEFINE(HAVE_KEYTYPE_ARCFOUR_56, 1, [Define if krb5.h defines KEYTYPE_ARCFOUR_56])
1422                       ],
1423                       [
1424                         AC_MSG_RESULT(no)
1425                       ])
1426                 fi
1427                 LIBS="$wireshark_save_LIBS"
1428             else
1429                 #
1430                 # It's not Heimdal or MIT.
1431                 #
1432                 AC_MSG_RESULT(no)
1433                 if test "x$want_krb5" = "xyes"
1434                 then
1435                     #
1436                     # The user tried to force us to use the library,
1437                     # but we can't do so; report an error.
1438                     #
1439                     AC_MSG_ERROR(Kerberos not found)
1440                 else
1441                     #
1442                     # Restore the versions of CFLAGS and CPPFLAGS
1443                     # from before we added the flags for Kerberos.
1444                     #
1445                     AC_MSG_RESULT(Kerberos not found - disabling dissection for some kerberos data in packet decoding)
1446                     CFLAGS="$wireshark_save_CFLAGS"
1447                     CPPFLAGS="$wireshark_save_CPPFLAGS"
1448                     KRB5_LIBS=""
1449                     want_krb5=no
1450                 fi
1451             fi
1452         else
1453             #
1454             # The user asked us not to use Kerberos, or they didn't
1455             # say whether they wanted us to use it but we found
1456             # that we couldn't.
1457             #
1458             # Restore the versions of CFLAGS and CPPFLAGS
1459             # from before we added the flags for Kerberos.
1460             #
1461             CFLAGS="$wireshark_save_CFLAGS"
1462             CPPFLAGS="$wireshark_save_CPPFLAGS"
1463             KRB5_LIBS=""
1464             want_krb5=no
1465         fi
1466         AC_SUBST(KRB5_LIBS)
1467 ])
1468
1469 dnl Autoconf macros for libgnutls
1470
1471 # Modified for LIBGNUTLS -- nmav
1472 # Configure paths for LIBGCRYPT
1473 # Shamelessly stolen from the one of XDELTA by Owen Taylor
1474 # Werner Koch   99-12-09
1475
1476 dnl AM_PATH_LIBGNUTLS([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
1477 dnl Test for libgnutls, and define LIBGNUTLS_CFLAGS and LIBGNUTLS_LIBS
1478 dnl
1479 AC_DEFUN([AM_PATH_LIBGNUTLS],
1480 [dnl
1481 dnl Get the cflags and libraries from the libgnutls-config script
1482 dnl
1483 AC_ARG_WITH(libgnutls-prefix,
1484           [  --with-libgnutls-prefix=PFX   Prefix where libgnutls is installed (optional)],
1485           libgnutls_config_prefix="$withval", libgnutls_config_prefix="")
1486
1487   if test x$libgnutls_config_prefix != x ; then
1488      if test x${LIBGNUTLS_CONFIG+set} != xset ; then
1489         LIBGNUTLS_CONFIG=$libgnutls_config_prefix/bin/libgnutls-config
1490      fi
1491   fi
1492
1493   AC_PATH_PROG(LIBGNUTLS_CONFIG, libgnutls-config, no)
1494   min_libgnutls_version=ifelse([$1], ,0.1.0,$1)
1495   AC_MSG_CHECKING(for libgnutls - version >= $min_libgnutls_version)
1496   no_libgnutls=""
1497   if test "$LIBGNUTLS_CONFIG" = "no" ; then
1498     no_libgnutls=yes
1499   else
1500     LIBGNUTLS_CFLAGS=`$LIBGNUTLS_CONFIG $libgnutls_config_args --cflags`
1501     LIBGNUTLS_LIBS=`$LIBGNUTLS_CONFIG $libgnutls_config_args --libs`
1502     libgnutls_config_version=`$LIBGNUTLS_CONFIG $libgnutls_config_args --version`
1503
1504       ac_save_CFLAGS="$CFLAGS"
1505       ac_save_LIBS="$LIBS"
1506       CFLAGS="$CFLAGS $LIBGNUTLS_CFLAGS"
1507       LIBS="$LIBS $LIBGNUTLS_LIBS"
1508 dnl
1509 dnl Now check if the installed libgnutls is sufficiently new. Also sanity
1510 dnl checks the results of libgnutls-config to some extent
1511 dnl
1512       rm -f conf.libgnutlstest
1513       AC_TRY_RUN([
1514 #include <stdio.h>
1515 #include <stdlib.h>
1516 #include <string.h>
1517 #include <gnutls/gnutls.h>
1518
1519 int
1520 main ()
1521 {
1522     system ("touch conf.libgnutlstest");
1523
1524     if( strcmp( gnutls_check_version(NULL), "$libgnutls_config_version" ) )
1525     {
1526       printf("\n*** 'libgnutls-config --version' returned %s, but LIBGNUTLS (%s)\n",
1527              "$libgnutls_config_version", gnutls_check_version(NULL) );
1528       printf("*** was found! If libgnutls-config was correct, then it is best\n");
1529       printf("*** to remove the old version of LIBGNUTLS. You may also be able to fix the error\n");
1530       printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
1531       printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
1532       printf("*** required on your system.\n");
1533       printf("*** If libgnutls-config was wrong, set the environment variable LIBGNUTLS_CONFIG\n");
1534       printf("*** to point to the correct copy of libgnutls-config, and remove the file config.cache\n");
1535       printf("*** before re-running configure\n");
1536     }
1537     else if ( strcmp(gnutls_check_version(NULL), LIBGNUTLS_VERSION ) )
1538     {
1539       printf("\n*** LIBGNUTLS header file (version %s) does not match\n", LIBGNUTLS_VERSION);
1540       printf("*** library (version %s)\n", gnutls_check_version(NULL) );
1541     }
1542     else
1543     {
1544       if ( gnutls_check_version( "$min_libgnutls_version" ) )
1545       {
1546         return 0;
1547       }
1548      else
1549       {
1550         printf("no\n*** An old version of LIBGNUTLS (%s) was found.\n",
1551                 gnutls_check_version(NULL) );
1552         printf("*** You need a version of LIBGNUTLS newer than %s. The latest version of\n",
1553                "$min_libgnutls_version" );
1554         printf("*** LIBGNUTLS is always available from ftp://gnutls.hellug.gr/pub/gnutls.\n");
1555         printf("*** \n");
1556         printf("*** If you have already installed a sufficiently new version, this error\n");
1557         printf("*** probably means that the wrong copy of the libgnutls-config shell script is\n");
1558         printf("*** being found. The easiest way to fix this is to remove the old version\n");
1559         printf("*** of LIBGNUTLS, but you can also set the LIBGNUTLS_CONFIG environment to point to the\n");
1560         printf("*** correct copy of libgnutls-config. (In this case, you will have to\n");
1561         printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
1562         printf("*** so that the correct libraries are found at run-time))\n");
1563       }
1564     }
1565   return 1;
1566 }
1567 ],, no_libgnutls=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
1568        CFLAGS="$ac_save_CFLAGS"
1569        LIBS="$ac_save_LIBS"
1570   fi
1571
1572   if test "x$no_libgnutls" = x ; then
1573      AC_MSG_RESULT(yes)
1574      ifelse([$2], , :, [$2])
1575   else
1576      if test -f conf.libgnutlstest ; then
1577         :
1578      else
1579         AC_MSG_RESULT(no)
1580      fi
1581      if test "$LIBGNUTLS_CONFIG" = "no" ; then
1582        echo "*** The libgnutls-config script installed by LIBGNUTLS could not be found"
1583        echo "*** If LIBGNUTLS was installed in PREFIX, make sure PREFIX/bin is in"
1584        echo "*** your path, or set the LIBGNUTLS_CONFIG environment variable to the"
1585        echo "*** full path to libgnutls-config."
1586      else
1587        if test -f conf.libgnutlstest ; then
1588         :
1589        else
1590           echo "*** Could not run libgnutls test program, checking why..."
1591           CFLAGS="$CFLAGS $LIBGNUTLS_CFLAGS"
1592           LIBS="$LIBS $LIBGNUTLS_LIBS"
1593           AC_TRY_LINK([
1594 #include <stdio.h>
1595 #include <stdlib.h>
1596 #include <string.h>
1597 #include <gnutls/gnutls.h>
1598 ],      [ return !!gnutls_check_version(NULL); ],
1599         [ echo "*** The test program compiled, but did not run. This usually means"
1600           echo "*** that the run-time linker is not finding LIBGNUTLS or finding the wrong"
1601           echo "*** version of LIBGNUTLS. If it is not finding LIBGNUTLS, you'll need to set your"
1602           echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
1603           echo "*** to the installed location  Also, make sure you have run ldconfig if that"
1604           echo "*** is required on your system"
1605           echo "***"
1606           echo "*** If you have an old version installed, it is best to remove it, although"
1607           echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
1608           echo "***" ],
1609         [ echo "*** The test program failed to compile or link. See the file config.log for the"
1610           echo "*** exact error that occured. This usually means LIBGNUTLS was incorrectly installed"
1611           echo "*** or that you have moved LIBGNUTLS since it was installed. In the latter case, you"
1612           echo "*** may want to edit the libgnutls-config script: $LIBGNUTLS_CONFIG" ])
1613           CFLAGS="$ac_save_CFLAGS"
1614           LIBS="$ac_save_LIBS"
1615        fi
1616      fi
1617      LIBGNUTLS_CFLAGS=""
1618      LIBGNUTLS_LIBS=""
1619      ifelse([$3], , :, [$3])
1620   fi
1621   rm -f conf.libgnutlstest
1622   AC_SUBST(LIBGNUTLS_CFLAGS)
1623   AC_SUBST(LIBGNUTLS_LIBS)
1624 ])