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
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  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 #
  97 # AC_WIRESHARK_IPV6_STACK
  98 #
  99 # By Jun-ichiro "itojun" Hagino, <itojun@iijlab.net>
 100 #
 101 AC_DEFUN([AC_WIRESHARK_IPV6_STACK],
 102 [
 103         v6type=unknown
 104         v6lib=none
 105
 106         AC_MSG_CHECKING([ipv6 stack type])
 107         for i in v6d toshiba kame inria zeta linux linux-glibc solaris8; do
 108                 case $i in
 109                 v6d)
 110                         AC_EGREP_CPP(yes, [
 111 #include </usr/local/v6/include/sys/types.h>
 112 #ifdef __V6D__
 113 yes
 114 #endif],
 115                                 [v6type=$i; v6lib=v6;
 116                                 v6libdir=/usr/local/v6/lib;
 117                                 CFLAGS="-I/usr/local/v6/include $CFLAGS"])
 118                         ;;
 119                 toshiba)
 120                         AC_EGREP_CPP(yes, [
 121 #include <sys/param.h>
 122 #ifdef _TOSHIBA_INET6
 123 yes
 124 #endif],
 125                                 [v6type=$i; v6lib=inet6;
 126                                 v6libdir=/usr/local/v6/lib;
 127                                 CFLAGS="-DINET6 $CFLAGS"])
 128                         ;;
 129                 kame)
 130                         AC_EGREP_CPP(yes, [
 131 #include <netinet/in.h>
 132 #ifdef __KAME__
 133 yes
 134 #endif],
 135                                 [v6type=$i; v6lib=inet6;
 136                                 v6libdir=/usr/local/v6/lib;
 137                                 CFLAGS="-DINET6 $CFLAGS"])
 138                         ;;
 139                 inria)
 140                         AC_EGREP_CPP(yes, [
 141 #include <netinet/in.h>
 142 #ifdef IPV6_INRIA_VERSION
 143 yes
 144 #endif],
 145                                 [v6type=$i; CFLAGS="-DINET6 $CFLAGS"])
 146                         ;;
 147                 zeta)
 148                         AC_EGREP_CPP(yes, [
 149 #include <sys/param.h>
 150 #ifdef _ZETA_MINAMI_INET6
 151 yes
 152 #endif],
 153                                 [v6type=$i; v6lib=inet6;
 154                                 v6libdir=/usr/local/v6/lib;
 155                                 CFLAGS="-DINET6 $CFLAGS"])
 156                         ;;
 157                 linux)
 158                         if test -d /usr/inet6; then
 159                                 v6type=$i
 160                                 v6lib=inet6
 161                                 v6libdir=/usr/inet6
 162                                 CFLAGS="-DINET6 $CFLAGS"
 163                         fi
 164                         ;;
 165                 linux-glibc)
 166                         AC_EGREP_CPP(yes, [
 167 #include <features.h>
 168 #if defined(__GLIBC__) && defined(__GLIBC_MINOR__)
 169 #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || __GLIBC__ > 2
 170 yes
 171 #endif
 172 #endif],
 173                         [v6type=$i; v6lib=inet6; CFLAGS="-DINET6 $CFLAGS"])
 174                         ;;
 175                 solaris8)
 176                         if test "`uname -s`" = "SunOS" && test "`uname -r`" = "5.8"; then
 177                                 v6type=$i
 178                                 v6lib=inet6
 179                                 [CFLAGS="-DINET6 -DSOLARIS8_INET6 $CFLAGS"]
 180                         fi
 181                         ;;
 182                 esac
 183                 if test "$v6type" != "unknown"; then
 184                         break
 185                 fi
 186         done
 187
 188         if test "$v6lib" != "none"; then
 189                 for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do
 190                         if test -d $dir -a -f $dir/lib$v6lib.a; then
 191                                 LIBS="-L$dir $LIBS -l$v6lib"
 192                                 break
 193                         fi
 194                 done
 195                 enable_ipv6="yes"
 196         else
 197                 enable_ipv6="no"
 198         fi
 199         AC_MSG_RESULT(["$v6type, $v6lib"])
 200 ])
 201
 202 #
 203 # AC_WIRESHARK_GETHOSTBY_LIB_CHECK
 204 #
 205 # Checks whether we need "-lnsl" to get "gethostby*()", which we use
 206 # in "resolv.c".
 207 #
 208 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
 209 # GNU Autoconf 2.13; the comment came from there.
 210 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
 211 #
 212 AC_DEFUN([AC_WIRESHARK_GETHOSTBY_LIB_CHECK],
 213 [
 214     # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
 215     # to get the SysV transport functions.
 216     # chad@anasazi.com says the Pyramid MIS-ES running DC/OSx (SVR4)
 217     # needs -lnsl.
 218     # The nsl library prevents programs from opening the X display
 219     # on Irix 5.2, according to dickey@clark.net.
 220     AC_CHECK_FUNC(gethostbyname, ,
 221         AC_CHECK_LIB(nsl, gethostbyname, NSL_LIBS="-lnsl"))
 222     AC_SUBST(NSL_LIBS)
 223 ])
 224
 225 #
 226 # AC_WIRESHARK_SOCKET_LIB_CHECK
 227 #
 228 # Checks whether we need "-lsocket" to get "socket()", which is used
 229 # by libpcap on some platforms - and, in effect, "gethostby*()" on
 230 # most if not all platforms (so that it can use NIS or DNS or...
 231 # to look up host names).
 232 #
 233 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
 234 # GNU Autoconf 2.13; the comment came from there.
 235 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
 236 #
 237 # We use "connect" because that's what AC_PATH_XTRA did.
 238 #
 239 AC_DEFUN([AC_WIRESHARK_SOCKET_LIB_CHECK],
 240 [
 241     # lieder@skyler.mavd.honeywell.com says without -lsocket,
 242     # socket/setsockopt and other routines are undefined under SCO ODT
 243     # 2.0.  But -lsocket is broken on IRIX 5.2 (and is not necessary
 244     # on later versions), says simon@lia.di.epfl.ch: it contains
 245     # gethostby* variants that don't use the nameserver (or something).
 246     # -lsocket must be given before -lnsl if both are needed.
 247     # We assume that if connect needs -lnsl, so does gethostbyname.
 248     AC_CHECK_FUNC(connect, ,
 249       AC_CHECK_LIB(socket, connect, SOCKET_LIBS="-lsocket",
 250                 AC_MSG_ERROR(Function 'socket' not found.), $NSL_LIBS))
 251     AC_SUBST(SOCKET_LIBS)
 252 ])
 253
 254 #
 255 # AC_WIRESHARK_BREAKLOOP_TRY_LINK
 256 #
 257 AC_DEFUN([AC_WIRESHARK_PCAP_BREAKLOOP_TRY_LINK],
 258 [
 259   AC_LINK_IFELSE(
 260   [
 261       AC_LANG_SOURCE(
 262       [[
 263 #       include <pcap.h>
 264         int main(void)
 265         {
 266           pcap_t  *pct = NULL;
 267           pcap_breakloop(pct);
 268           return 0;
 269         }
 270       ]])
 271   ],
 272   [
 273     ws_breakloop_compiled=yes
 274   ],
 275   [
 276     ws_breakloop_compiled=no
 277   ])
 278 ])
 279
 280
 281
 282 #
 283 # AC_WIRESHARK_PCAP_CHECK
 284 #
 285 AC_DEFUN([AC_WIRESHARK_PCAP_CHECK],
 286 [
 287         if test -z "$pcap_dir"
 288         then
 289           # Pcap header checks
 290           # XXX need to set a var AC_CHECK_HEADER(pcap.h,,)
 291
 292           #
 293           # The user didn't specify a directory in which libpcap resides;
 294           # we assume that the current library search path will work,
 295           # but we may have to look for the header in a "pcap"
 296           # subdirectory of "/usr/include" or "/usr/local/include",
 297           # as some systems apparently put "pcap.h" in a "pcap"
 298           # subdirectory, and we also check "$prefix/include" - and
 299           # "$prefix/include/pcap", in case $prefix is set to
 300           # "/usr/include" or "/usr/local/include".
 301           #
 302           # XXX - should we just add "$prefix/include" to the include
 303           # search path and "$prefix/lib" to the library search path?
 304           #
 305           AC_MSG_CHECKING(for extraneous pcap header directories)
 306           found_pcap_dir=""
 307           pcap_dir_list="/usr/include/pcap $prefix/include/pcap $prefix/include"
 308           if test "x$ac_cv_enable_usr_local" = "xyes" ; then
 309             pcap_dir_list="$pcap_dir_list /usr/local/include/pcap"
 310           fi
 311           for pcap_dir in $pcap_dir_list
 312           do
 313             if test -d $pcap_dir ; then
 314                 if test x$pcap_dir != x/usr/include -a x$pcap_dir != x/usr/local/include ; then
 315                     CFLAGS="$CFLAGS -I$pcap_dir"
 316                     CPPFLAGS="$CPPFLAGS -I$pcap_dir"
 317                 fi
 318                 found_pcap_dir=" $found_pcap_dir -I$pcap_dir"
 319                 break
 320             fi
 321           done
 322
 323           if test "$found_pcap_dir" != "" ; then
 324             AC_MSG_RESULT(found --$found_pcap_dir added to CFLAGS)
 325           else
 326             AC_MSG_RESULT(not found)
 327           fi
 328         else
 329           #
 330           # The user specified a directory in which libpcap resides,
 331           # so add the "include" subdirectory of that directory to
 332           # the include file search path and the "lib" subdirectory
 333           # of that directory to the library search path.
 334           #
 335           # XXX - if there's also a libpcap in a directory that's
 336           # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
 337           # make us find the version in the specified directory,
 338           # as the compiler and/or linker will search that other
 339           # directory before it searches the specified directory.
 340           #
 341           CFLAGS="$CFLAGS -I$pcap_dir/include"
 342           CPPFLAGS="$CPPFLAGS -I$pcap_dir/include"
 343           AC_WIRESHARK_ADD_DASH_L(LDFLAGS, $pcap_dir/lib)
 344         fi
 345
 346         # Pcap header check
 347         AC_CHECK_HEADER(pcap.h,,
 348             AC_MSG_ERROR([[Header file pcap.h not found; if you installed libpcap
 349 from source, did you also do \"make install-incl\", and if you installed a
 350 binary package of libpcap, is there also a developer's package of libpcap,
 351 and did you also install that package?]]))
 352
 353         #
 354         # Check to see if we find "pcap_open_live" in "-lpcap".
 355         # Also check for various additional libraries that libpcap might
 356         # require.
 357         #
 358         AC_CHECK_LIB(pcap, pcap_open_live,
 359           [
 360             PCAP_LIBS=-lpcap
 361             AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library])
 362           ], [
 363             ac_wireshark_extras_found=no
 364             ac_save_LIBS="$LIBS"
 365             for extras in "-lcfg -lodm" "-lpfring"
 366             do
 367                 AC_MSG_CHECKING([for pcap_open_live in -lpcap with $extras])
 368                 LIBS="-lpcap $extras"
 369                 #
 370                 # XXX - can't we use AC_CHECK_LIB here?
 371                 #
 372                 AC_TRY_LINK(
 373                     [
 374 #       include <pcap.h>
 375                     ],
 376                     [
 377         pcap_open_live(NULL, 0, 0, 0, NULL);
 378                     ],
 379                     [
 380                         ac_wireshark_extras_found=yes
 381                         AC_MSG_RESULT([yes])
 382                         PCAP_LIBS="-lpcap $extras"
 383                         AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library])
 384                     ],
 385                     [
 386                         AC_MSG_RESULT([no])
 387                     ])
 388                 if test x$ac_wireshark_extras_found = xyes
 389                 then
 390                     break
 391                 fi
 392             done
 393             if test x$ac_wireshark_extras_found = xno
 394             then
 395                 AC_MSG_ERROR([Can't link with library libpcap.])
 396             fi
 397             LIBS=$ac_save_LIBS
 398           ], $SOCKET_LIBS $NSL_LIBS)
 399         AC_SUBST(PCAP_LIBS)
 400
 401         #
 402         # Check whether various variables and functions are defined by
 403         # libpcap.
 404         #
 405         ac_save_LIBS="$LIBS"
 406         AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
 407         LIBS="$PCAP_LIBS $SOCKET_LIBS $NSL_LIBS $LIBS"
 408         AC_TRY_LINK(
 409            [
 410 #       include <stdio.h>
 411         extern char *pcap_version;
 412            ],
 413            [
 414         printf ("%s\n", pcap_version);
 415            ],
 416            ac_cv_pcap_version_defined=yes,
 417            ac_cv_pcap_version_defined=no,
 418            [echo $ac_n "cross compiling; assumed OK... $ac_c"])
 419         if test "$ac_cv_pcap_version_defined" = yes ; then
 420                 AC_MSG_RESULT(yes)
 421                 AC_DEFINE(HAVE_PCAP_VERSION, 1, [Define if libpcap version is known])
 422         else
 423                 AC_MSG_RESULT(no)
 424         fi
 425         AC_CHECK_FUNCS(pcap_open_dead pcap_freecode)
 426         #
 427         # pcap_breakloop may be present in the library but not declared
 428         # in the pcap.h header file.  If it's not declared in the header
 429         # file, attempts to use it will get warnings, and, if we're
 430         # building with warnings treated as errors, that warning will
 431         # cause compilation to fail.
 432         #
 433         # We are therefore first testing whether the function is present
 434         # and then, if we're compiling with warnings as errors, testing
 435         # whether it is usable.  It is usable if it compiles without
 436         # a -Wimplicit warning (the "compile with warnings as errors"
 437         # option requires GCC). If it is not usable, we fail and tell
 438         # the user that the pcap.h header needs to be updated.
 439         #
 440         # Ceteris paribus, this should only happen with Mac OS X 10.3[.x] which
 441         # can have an up-to-date pcap library without the corresponding pcap
 442         # header.
 443         #
 444         # However, it might also happen on some others OSes with some erroneous
 445         # system manipulations where multiple versions of libcap might co-exist
 446         # e.g. hand made symbolic link from libpcap.so -> libpcap.so.0.8 but
 447         # having the pcap header version 0.7.
 448         #
 449         AC_MSG_CHECKING([whether pcap_breakloop is present])
 450         ac_CFLAGS_saved="$CFLAGS"
 451         AC_WIRESHARK_PCAP_BREAKLOOP_TRY_LINK
 452         if test "x$ws_breakloop_compiled" = "xyes"; then
 453           AC_MSG_RESULT(yes)
 454           AC_DEFINE(HAVE_PCAP_BREAKLOOP, 1, [Define if pcap_breakloop is known])
 455           if test "x$with_warnings_as_errors" = "xyes"; then
 456             AC_MSG_CHECKING([whether pcap_breakloop is usable])
 457             CFLAGS="$CFLAGS -Werror -Wimplicit"
 458             AC_WIRESHARK_PCAP_BREAKLOOP_TRY_LINK
 459             if test "x$ws_breakloop_compiled" = "xyes"; then
 460               AC_MSG_RESULT(yes)
 461             else
 462               AC_MSG_RESULT(no)
 463               AC_MSG_ERROR(
 464 [Your pcap library is more recent than your pcap header.
 465 As you are building with compiler warnings treated as errors, Wireshark
 466 won't be able to use functions not declared in that header.
 467 If you wish to build with compiler warnings treated as errors, You should
 468 install a newer version of the header file.])
 469             fi
 470             CFLAGS="$ac_CFLAGS_saved"
 471           fi
 472         else
 473           AC_MSG_RESULT(no)
 474         fi
 475
 476         #
 477         # Later versions of Mac OS X 10.3[.x] ship a pcap.h that
 478         # doesn't define pcap_if_t but ship an 0.8[.x] libpcap,
 479         # so the library has "pcap_findalldevs()", but pcap.h
 480         # doesn't define "pcap_if_t" so you can't actually *use*
 481         # "pcap_findalldevs()".
 482         #
 483         # That even appears to be true of systems shipped with
 484         # 10.3.4, so it doesn't appear only to be a case of
 485         # Software Update not updating header files.
 486         #
 487         # (You can work around this by installing the 0.8 header
 488         # files.)
 489         #
 490         AC_CACHE_CHECK([whether pcap_findalldevs is present and usable],
 491           [ac_cv_func_pcap_findalldevs],
 492           [
 493             AC_LINK_IFELSE(
 494               [
 495                 AC_LANG_SOURCE(
 496                   [[
 497                     #include <pcap.h>
 498                     main()
 499                     {
 500                       pcap_if_t *devpointer;
 501                       char errbuf[1];
 502
 503                       pcap_findalldevs(&devpointer, errbuf);
 504                     }
 505                   ]])
 506               ],
 507               [
 508                 ac_cv_func_pcap_findalldevs=yes
 509               ],
 510               [
 511                 ac_cv_func_pcap_findalldevs=no
 512               ])
 513           ])
 514         #
 515         # Don't check for other new routines that showed up after
 516         # "pcap_findalldevs()" if we don't have a usable
 517         # "pcap_findalldevs()", so we don't end up using them if the
 518         # "pcap.h" is crufty and old and doesn't declare them.
 519         #
 520         if test $ac_cv_func_pcap_findalldevs = "yes" ; then
 521           AC_DEFINE(HAVE_PCAP_FINDALLDEVS, 1,
 522            [Define to 1 if you have the `pcap_findalldevs' function and a pcap.h that declares pcap_if_t.])
 523           AC_CHECK_FUNCS(pcap_datalink_val_to_name pcap_datalink_name_to_val)
 524           AC_CHECK_FUNCS(pcap_list_datalinks pcap_set_datalink pcap_lib_version)
 525           AC_CHECK_FUNCS(pcap_get_selectable_fd pcap_free_datalinks)
 526         fi
 527         LIBS="$ac_save_LIBS"
 528 ])
 529
 530 AC_DEFUN([AC_WIRESHARK_PCAP_REMOTE_CHECK],
 531 [
 532     ac_save_LIBS="$LIBS"
 533     LIBS="$PCAP_LIBS $SOCKET_LIBS $NSL_LIBS $LIBS"
 534     AC_DEFINE(HAVE_REMOTE, 1, [Define to 1 to enable remote
 535               capturing feature in WinPcap library])
 536     AC_CHECK_FUNCS(pcap_open pcap_findalldevs_ex pcap_createsrcstr)
 537     if test $ac_cv_func_pcap_open = "yes" -a \
 538             $ac_cv_func_pcap_findalldevs_ex = "yes" -a \
 539             $ac_cv_func_pcap_createsrcstr = "yes" ; then
 540         AC_DEFINE(HAVE_PCAP_REMOTE, 1,
 541             [Define to 1 if you have WinPcap remote capturing support and prefer to use these new API features.])
 542     fi
 543     AC_CHECK_FUNCS(pcap_setsampling)
 544     LIBS="$ac_save_LIBS"
 545 ])
 546
 547 #
 548 # AC_WIRESHARK_ZLIB_CHECK
 549 #
 550 AC_DEFUN([AC_WIRESHARK_ZLIB_CHECK],
 551 [
 552         if test "x$zlib_dir" != "x"
 553         then
 554           #
 555           # The user specified a directory in which zlib resides,
 556           # so add the "include" subdirectory of that directory to
 557           # the include file search path and the "lib" subdirectory
 558           # of that directory to the library search path.
 559           #
 560           # XXX - if there's also a zlib in a directory that's
 561           # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
 562           # make us find the version in the specified directory,
 563           # as the compiler and/or linker will search that other
 564           # directory before it searches the specified directory.
 565           #
 566           wireshark_save_CFLAGS="$CFLAGS"
 567           CFLAGS="$CFLAGS -I$zlib_dir/include"
 568           wireshark_save_CPPFLAGS="$CPPFLAGS"
 569           CPPFLAGS="$CPPFLAGS -I$zlib_dir/include"
 570           wireshark_save_LIBS="$LIBS"
 571           AC_WIRESHARK_ADD_DASH_L(LIBS, $zlib_dir/lib)
 572         fi
 573
 574         #
 575         # Make sure we have "zlib.h".  If we don't, it means we probably
 576         # don't have zlib, so don't use it.
 577         #
 578         AC_CHECK_HEADER(zlib.h,,
 579           [
 580             if test "x$zlib_dir" != "x"
 581             then
 582               #
 583               # The user used "--with-zlib=" to specify a directory
 584               # containing zlib, but we didn't find the header file
 585               # there; that either means they didn't specify the
 586               # right directory or are confused about whether zlib
 587               # is, in fact, installed.  Report the error and give up.
 588               #
 589               AC_MSG_ERROR([zlib header not found in directory specified in --with-zlib])
 590             else
 591               if test "x$want_zlib" = "xyes"
 592               then
 593                 #
 594                 # The user tried to force us to use the library, but we
 595                 # couldn't find the header file; report an error.
 596                 #
 597                 AC_MSG_ERROR(Header file zlib.h not found.)
 598               else
 599                 #
 600                 # We couldn't find the header file; don't use the
 601                 # library, as it's probably not present.
 602                 #
 603                 want_zlib=no
 604               fi
 605             fi
 606           ])
 607
 608         if test "x$want_zlib" != "xno"
 609         then
 610                 #
 611                 # Well, we at least have the zlib header file.
 612                 #
 613                 # Check for "gzgets()" in zlib, because we need it, but
 614                 # some older versions of zlib don't have it.  It appears
 615                 # from the zlib ChangeLog that any released version of zlib
 616                 # with "gzgets()" should have the other routines we
 617                 # depend on, such as "gzseek()", "gztell()", and "zError()".
 618                 #
 619                 # Another reason why we require "gzgets()" is that
 620                 # some versions of zlib that didn't have it, such
 621                 # as 1.0.8, had a bug in "gzseek()" that meant that it
 622                 # doesn't work correctly on uncompressed files; this
 623                 # means we cannot use version 1.0.8.  (Unfortunately,
 624                 # that's the version that comes with recent X11 source,
 625                 # and many people who install XFree86 on their Slackware
 626                 # boxes don't realize that they should configure it to
 627                 # use the native zlib rather than building and installing
 628                 # the crappy old version that comes with XFree86.)
 629                 #
 630                 # I.e., we can't just avoid using "gzgets()", as
 631                 # versions of zlib without "gzgets()" are likely to have
 632                 # a broken "gzseek()".
 633                 #
 634                 AC_CHECK_LIB(z, gzgets,
 635                 [
 636                         if test "x$zlib_dir" != "x"
 637                         then
 638                                 #
 639                                 # Put the "-I" and "-L" flags for zlib at
 640                                 # the beginning of CFLAGS, CPPFLAGS, and
 641                                 # LIBS.
 642                                 #
 643                                 LIBS=""
 644                                 AC_WIRESHARK_ADD_DASH_L(LIBS, $zlib_dir/lib)
 645                                 LIBS="$LIBS -lz $wireshark_save_LIBS"
 646                         else
 647                                 LIBS="-lz $LIBS"
 648                         fi
 649                         AC_DEFINE(HAVE_LIBZ, 1, [Define to use libz library])
 650                 ],[
 651                         if test "x$zlib_dir" != "x"
 652                         then
 653                                 #
 654                                 # Restore the versions of CFLAGS, CPPFLAGS,
 655                                 # and LIBS before we added the "-with-zlib="
 656                                 # directory, as we didn't actually find
 657                                 # zlib there, or didn't find a zlib that
 658                                 # contains gzgets there.
 659                                 #
 660                                 CFLAGS="$wireshark_save_CFLAGS"
 661                                 CPPFLAGS="$wireshark_save_CPPFLAGS"
 662                                 LIBS="$wireshark_save_LIBS"
 663                         fi
 664                         want_zlib=no
 665                 ])
 666         fi
 667
 668         if test "x$want_zlib" != "xno"
 669         then
 670                 #
 671                 # Well, we at least have the zlib header file and a zlib
 672                 # with "gzgets()".
 673                 #
 674                 # Now check for "gzgets()" in zlib when linking with the
 675                 # linker flags for GTK+ applications; people often grab
 676                 # XFree86 source and build and install it on their systems,
 677                 # and they appear sometimes to misconfigure XFree86 so that,
 678                 # even on systems with zlib, it assumes there is no zlib,
 679                 # so the XFree86 build process builds and installs its
 680                 # own zlib in the X11 library directory.
 681                 #
 682                 # The XFree86 zlib is an older version that lacks
 683                 # "gzgets()", and that's the zlib with which Wireshark
 684                 # gets linked, so the build of Wireshark fails.
 685                 #
 686                 ac_save_CFLAGS="$CFLAGS"
 687                 ac_save_LIBS="$LIBS"
 688                 CFLAGS="$CFLAGS $GTK_CFLAGS"
 689                 LIBS="$GTK_LIBS -lz $LIBS"
 690                 AC_MSG_CHECKING([for gzgets missing when linking with X11])
 691                 AC_TRY_LINK_FUNC(gzgets, AC_MSG_RESULT(no),
 692                   [
 693                     AC_MSG_RESULT(yes)
 694                     AC_MSG_ERROR(old zlib found when linking with X11 - get rid of old zlib.)
 695                   ])
 696                 CFLAGS="$ac_save_CFLAGS"
 697                 LIBS="$ac_save_LIBS"
 698         fi
 699 ])
 700
 701 #
 702 # AC_WIRESHARK_LIBPCRE_CHECK
 703 #
 704 AC_DEFUN([AC_WIRESHARK_LIBPCRE_CHECK],
 705 [
 706         if test "x$pcre_dir" != "x"
 707         then
 708           #
 709           # The user specified a directory in which libpcre resides,
 710           # so add the "include" subdirectory of that directory to
 711           # the include file search path and the "lib" subdirectory
 712           # of that directory to the library search path.
 713           #
 714           # XXX - if there's also a libpcre in a directory that's
 715           # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
 716           # make us find the version in the specified directory,
 717           # as the compiler and/or linker will search that other
 718           # directory before it searches the specified directory.
 719           #
 720           wireshark_save_CFLAGS="$CFLAGS"
 721           CFLAGS="$CFLAGS -I$pcre_dir/include"
 722           wireshark_save_CPPFLAGS="$CPPFLAGS"
 723           CPPFLAGS="$CPPFLAGS -I$pcre_dir/include"
 724           wireshark_save_LIBS="$LIBS"
 725           LIBS="$LIBS -lpcre"
 726           wireshark_save_LDFLAGS="$LDFLAGS"
 727           LDFLAGS="$LDFLAGS -L$pcre_dir/lib"
 728         fi
 729
 730         #
 731         # Make sure we have "pcre.h".  If we don't, it means we probably
 732         # don't have libpcre, so don't use it.
 733         #
 734         AC_CHECK_HEADER(pcre.h,,
 735           [
 736             if test "x$pcre_dir" != "x"
 737             then
 738               #
 739               # The user used "--with-pcre=" to specify a directory
 740               # containing libpcre, but we didn't find the header file
 741               # there; that either means they didn't specify the
 742               # right directory or are confused about whether libpcre
 743               # is, in fact, installed.  Report the error and give up.
 744               #
 745               AC_MSG_ERROR([libpcre header not found in directory specified in --with-pcre])
 746             else
 747               if test "x$want_pcre" = "xyes"
 748               then
 749                 #
 750                 # The user tried to force us to use the library, but we
 751                 # couldn't find the header file; report an error.
 752                 #
 753                 AC_MSG_ERROR(Header file pcre.h not found.)
 754               else
 755                 #
 756                 # We couldn't find the header file; don't use the
 757                 # library, as it's probably not present.
 758                 #
 759                 want_pcre=no
 760               fi
 761             fi
 762           ])
 763
 764         if test "x$want_pcre" != "xno"
 765         then
 766                 #
 767                 # Well, we at least have the pcre header file.
 768                 #
 769                 # We're only using standard functions from libpcre,
 770                 # so we don't need to perform extra checks.
 771                 #
 772                 AC_CHECK_LIB(pcre, pcre_compile,
 773                 [
 774                         if test "x$pcre_dir" != "x"
 775                         then
 776                                 #
 777                                 # Put the "-I" and "-L" flags for pcre at
 778                                 # the beginning of CFLAGS, CPPFLAGS,
 779                                 # LDFLAGS, and LIBS.
 780                                 #
 781                                 PCRE_LIBS="-L$pcre_dir/lib -lpcre $wireshark_save_LIBS"
 782                         else
 783                                 PCRE_LIBS="-lpcre"
 784                         fi
 785                         AC_DEFINE(HAVE_LIBPCRE, 1, [Define to use libpcre library])
 786                 ],[
 787                         if test "x$pcre_dir" != "x"
 788                         then
 789                                 #
 790                                 # Restore the versions of CFLAGS, CPPFLAGS,
 791                                 # LDFLAGS, and LIBS before we added the
 792                                 # "--with-pcre=" directory, as we didn't
 793                                 # actually find pcre there.
 794                                 #
 795                                 CFLAGS="$wireshark_save_CFLAGS"
 796                                 CPPFLAGS="$wireshark_save_CPPFLAGS"
 797                                 LDFLAGS="$wireshark_save_LDFLAGS"
 798                                 LIBS="$wireshark_save_LIBS"
 799                                 PCRE_LIBS=""
 800                         fi
 801                         want_pcre=no
 802                 ])
 803                 AC_SUBST(PCRE_LIBS)
 804         fi
 805 ])
 806
 807 #
 808 # AC_WIRESHARK_LIBLUA_CHECK
 809 #
 810 AC_DEFUN([AC_WIRESHARK_LIBLUA_CHECK],[
 811
 812         if test "x$lua_dir" != "x"
 813         then
 814                 #
 815                 # The user specified a directory in which liblua resides,
 816                 # so add the "include" subdirectory of that directory to
 817                 # the include file search path and the "lib" subdirectory
 818                 # of that directory to the library search path.
 819                 #
 820                 # XXX - if there's also a liblua in a directory that's
 821                 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
 822                 # make us find the version in the specified directory,
 823                 # as the compiler and/or linker will search that other
 824                 # directory before it searches the specified directory.
 825                 #
 826                 wireshark_save_CFLAGS="$CFLAGS"
 827                 CFLAGS="$CFLAGS -I$lua_dir/include"
 828                 wireshark_save_CPPFLAGS="$CPPFLAGS"
 829                 CPPFLAGS="$CPPFLAGS -I$lua_dir/include"
 830                 wireshark_save_LIBS="$LIBS"
 831                 LIBS="$LIBS -L$lua_dir/lib -llua -lm"
 832                 wireshark_save_LDFLAGS="$LDFLAGS"
 833                 LDFLAGS="$LDFLAGS -L$lua_dir/lib"
 834         else
 835                 #
 836                 # The user specified no directory in which liblua resides,
 837                 # so just add "-llua -lliblua" to the used libs.
 838                 #
 839                 wireshark_save_CFLAGS="$CFLAGS"
 840                 wireshark_save_CPPFLAGS="$CPPFLAGS"
 841                 wireshark_save_LDFLAGS="$LDFLAGS"
 842                 wireshark_save_LIBS="$LIBS"
 843                 LIBS="$LIBS -llua -lm"
 844         fi
 845
 846         #
 847         # Make sure we have "lua.h", "lualib.h" and "lauxlib.h".  If we don't, it means we probably
 848         # don't have liblua, so don't use it.
 849         #
 850         AC_CHECK_HEADERS(lua.h lualib.h lauxlib.h,,
 851         [
 852                 AC_CHECK_HEADERS(lua5.1/lua.h lua5.1/lualib.h lua5.1/lauxlib.h,
 853                 [
 854                         if test "x$lua_dir" != "x"
 855                         then
 856                                 LUA_INCLUDES="-I$lua_dir/include/lua5.1"
 857                         else
 858                                 # we found lua5.1/lua.h, but we don't know which include dir contains it
 859                                 AC_MSG_ERROR(Header file lua.h was found as lua5.1/lua.h but we can't use it. Please set the PATH for the --with-lua configure parameter. \n probably it is /usr.)
 860                         fi
 861
 862                 ],
 863                 [
 864                         if test "x$lua_dir" != "x"
 865                         then
 866                                 #
 867                                 # The user used "--with-lua=" to specify a directory
 868                                 # containing liblua, but we didn't find the header file
 869                                 # there; that either means they didn't specify the
 870                                 # right directory or are confused about whether liblua
 871                                 # is, in fact, installed.  Report the error and give up.
 872                                 #
 873                                 AC_MSG_ERROR([liblua header not found in directory specified in --with-lua])
 874                         else
 875                                 if test "x$want_lua" = "xyes"
 876                                 then
 877                                         #
 878                                         # The user tried to force us to use the library, but we
 879                                         # couldn't find the header file; report an error.
 880                                         #
 881                                         AC_MSG_ERROR(Header file lua.h not found.)
 882                                 else
 883                                         #
 884                                         # We couldn't find the header file; don't use the
 885                                         # library, as it's probably not present.
 886                                         #
 887                                         want_lua=no
 888                                 fi
 889                         fi
 890                 ])
 891         ])
 892
 893         if test "x$want_lua" != "xno"
 894         then
 895                 #
 896                 # Well, we at least have the lua header file.
 897                 #
 898                 # let's check if the libs are there
 899                 #
 900
 901                 # At least on Suse 9.3 systems, liblualib needs linking
 902                 # against libm.
 903                 LIBS="$LIBS $LUA_LIBS -lm"
 904
 905                 AC_CHECK_LIB(lua, lua_call,
 906                 [
 907                         if test "x$lua_dir" != "x"
 908                         then
 909                                 #
 910                                 # Put the "-I" and "-L" flags for lua at
 911                                 # the beginning of CFLAGS, CPPFLAGS,
 912                                 # LDFLAGS, and LIBS.
 913                                 #
 914                                 LUA_LIBS="-L$lua_dir/lib -llua -lm"
 915                                 LUA_INCLUDES="-I$lua_dir/include"
 916                         else
 917                                 LUA_LIBS="-llua -lm"
 918                                 LUA_INCLUDES=""
 919                         fi
 920
 921                         #
 922                         # we got lua, now look for lualib
 923                         #
 924                         AC_CHECK_LIB(lualib, luaL_openlib,
 925                         [
 926                                 #
 927                                 # we have 5.0
 928                                 #
 929                                 LUA_LIBS="$LUA_LIBS -llualib"
 930                         ],[
 931                                 #
 932                                 # no lualib, in 5.1 there's only liblua
 933                                 # do we have 5.1?
 934                                 #
 935
 936                                 LIBS="$wireshark_save_LIBS $LUA_LIBS"
 937
 938                                 AC_CHECK_LIB(lua, luaL_register,
 939                                 [
 940                                     #
 941                                     #  Lua 5.1 found
 942                                     #
 943                                     AC_DEFINE(HAVE_LUA_5_1, 1, [Define to use Lua 5.1])
 944                                 ],[
 945                                     #
 946                                     # No, it is not 5.1
 947                                     #
 948                                     if test "x$lua_dir" != "x"
 949                                     then
 950                                         #
 951                                         # Restore the versions of CFLAGS, CPPFLAGS,
 952                                         # LDFLAGS, and LIBS before we added the
 953                                         # "--with-lua=" directory, as we didn't
 954                                         # actually find lua there.
 955                                         #
 956                                         CFLAGS="$wireshark_save_CFLAGS"
 957                                         CPPFLAGS="$wireshark_save_CPPFLAGS"
 958                                         LDFLAGS="$wireshark_save_LDFLAGS"
 959                                         LIBS="$wireshark_save_LIBS"
 960                                         LUA_LIBS=""
 961                                     fi
 962                                     # User requested --with-lua but it isn't available
 963                                     if test "x$want_lua" = "xyes"
 964                                     then
 965                                         AC_MSG_ERROR(Linking with liblualib failed.)
 966                                     fi
 967                                     want_lua=no
 968                                 ])
 969                         ])
 970                 ],[
 971                         #
 972                         # We could not find the libs, maybe we have version number in the lib name
 973                         #
 974
 975                         LIBS="$wireshark_save_LIBS -llua5.1 -lm"
 976
 977                         AC_CHECK_LIB(lua5.1, luaL_register,
 978                         [
 979                             #
 980                             #  Lua 5.1 found
 981                             #
 982                             AC_DEFINE(HAVE_LUA_5_1, 1, [Define to use Lua 5.1])
 983                             LUA_LIBS=" -llua5.1 -lm"
 984                         ],[
 985                                 #
 986                                 # Restore the versions of CFLAGS, CPPFLAGS,
 987                                 # LDFLAGS, and LIBS before we added the
 988                                 # "--with-lua=" directory, as we didn't
 989                                 # actually find lua there.
 990                                 #
 991                                 CFLAGS="$wireshark_save_CFLAGS"
 992                                 CPPFLAGS="$wireshark_save_CPPFLAGS"
 993                                 LDFLAGS="$wireshark_save_LDFLAGS"
 994                                 LIBS="$wireshark_save_LIBS"
 995                                 LUA_LIBS=""
 996                                 # User requested --with-lua but it isn't available
 997                                 if test "x$want_lua" = "xyes"
 998                                 then
 999                                         AC_MSG_ERROR(Linking with liblua failed.)
1000                                 fi
1001                                 want_lua=no
1002                         ])
1003                 ])
1004
1005         CFLAGS="$wireshark_save_CFLAGS"
1006         CPPFLAGS="$wireshark_save_CPPFLAGS"
1007         LDFLAGS="$wireshark_save_LDFLAGS"
1008         LIBS="$wireshark_save_LIBS"
1009         AC_SUBST(LUA_LIBS)
1010         AC_SUBST(LUA_INCLUDES)
1011
1012         fi
1013 ])
1014
1015 #
1016 # AC_WIRESHARK_LIBPORTAUDIO_CHECK
1017 #
1018 AC_DEFUN([AC_WIRESHARK_LIBPORTAUDIO_CHECK],[
1019
1020         if test "x$portaudio_dir" != "x"
1021         then
1022                 #
1023                 # The user specified a directory in which libportaudio
1024                 # resides, so add the "include" subdirectory of that directory to
1025                 # the include file search path and the "lib" subdirectory
1026                 # of that directory to the library search path.
1027                 #
1028                 # XXX - if there's also a libportaudio in a directory that's
1029                 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
1030                 # make us find the version in the specified directory,
1031                 # as the compiler and/or linker will search that other
1032                 # directory before it searches the specified directory.
1033                 #
1034                 wireshark_save_CFLAGS="$CFLAGS"
1035                 CFLAGS="$CFLAGS -I$portaudio_dir/include"
1036                 wireshark_save_CPPFLAGS="$CPPFLAGS"
1037                 CPPFLAGS="$CPPFLAGS -I$portaudio_dir/include"
1038                 wireshark_save_LIBS="$LIBS"
1039                 LIBS="$LIBS -L$portaudio_dir/lib -lportaudio"
1040                 wireshark_save_LDFLAGS="$LDFLAGS"
1041                 LDFLAGS="$LDFLAGS -L$portaudio_dir/lib"
1042         else
1043                 #
1044                 # The user specified no directory in which libportaudio resides,
1045                 # so just add "-lportaudio" to the used libs.
1046                 #
1047                 wireshark_save_CFLAGS="$CFLAGS"
1048                 wireshark_save_CPPFLAGS="$CPPFLAGS"
1049                 wireshark_save_LDFLAGS="$LDFLAGS"
1050                 wireshark_save_LIBS="$LIBS"
1051                 LIBS="$LIBS -lportaudio"
1052         fi
1053
1054         #
1055         # Make sure we have "portaudio.h".  If we don't, it means we probably
1056         # don't have libportaudio, so don't use it.
1057         #
1058         AC_CHECK_HEADERS(portaudio.h,,
1059         [
1060                 if test "x$portaudio_dir" != "x"
1061                 then
1062                         #
1063                         # The user used "--with-portaudio=" to specify a directory
1064                         # containing libportaudio, but we didn't find the header file
1065                         # there; that either means they didn't specify the
1066                         # right directory or are confused about whether libportaudio
1067                         # is, in fact, installed.  Report the error and give up.
1068                         #
1069                         AC_MSG_ERROR([libportaudio header not found in directory specified in --with-portaudio])
1070                 else
1071                         CFLAGS="$wireshark_save_CFLAGS"
1072                         CPPFLAGS="$wireshark_save_CPPFLAGS"
1073                         LDFLAGS="$wireshark_save_LDFLAGS"
1074                         LIBS="$wireshark_save_LIBS"
1075                         PORTAUDIO_LIBS=""
1076                         if test "x$want_portaudio" = "xyes"
1077                         then
1078                                 #
1079                                 # The user tried to force us to use the library, but we
1080                                 # couldn't find the header file; report an error.
1081                                 #
1082                                 AC_MSG_ERROR(Header file portaudio.h not found.)
1083                         else
1084                                 #
1085                                 # We couldn't find the header file; don't use the
1086                                 # library, as it's probably not present.
1087                                 #
1088                                 want_portaudio=no
1089                         fi
1090                 fi
1091         ])
1092
1093         #
1094         # Check whether we have the right version of portaudio
1095         #
1096         if test "x$want_portaudio" != "xno"
1097         then
1098                 AC_CHECK_TYPE(PortAudioStream,
1099                 AC_DEFINE(PORTAUDIO_API_1, 1, [Define if we are using version of of the Portaudio library API]),
1100                 ,
1101                 [#include <portaudio.h>])
1102         fi
1103
1104         if test "x$want_portaudio" != "xno"
1105         then
1106                 #
1107                 # Well, we at least have the portaudio header file.
1108                 #
1109                 # let's check if the libs are there
1110                 #
1111
1112                 AC_CHECK_LIB(portaudio, Pa_Initialize,
1113                 [
1114                         if test "x$portaudio_dir" != "x"
1115                         then
1116                                 #
1117                                 # Put the "-I" and "-L" flags for portaudio at
1118                                 # the beginning of CFLAGS, CPPFLAGS,
1119                                 # LDFLAGS, and LIBS.
1120                                 #
1121                                 PORTAUDIO_LIBS="-L$portaudio_dir/lib -lportaudio"
1122                                 PORTAUDIO_INCLUDES="-I$portaudio_dir/include"
1123                         else
1124                                 PORTAUDIO_LIBS="-lportaudio"
1125                                 PORTAUDIO_INCLUDES=""
1126                         fi
1127                         AC_DEFINE(HAVE_LIBPORTAUDIO, 1, [Define to use libportaudio library])
1128                         want_portaudio=yes
1129                 ],[
1130                         #
1131                         # Restore the versions of CFLAGS, CPPFLAGS,
1132                         # LDFLAGS, and LIBS before we added the
1133                         # "--with-portaudio=" directory, as we didn't
1134                         # actually find portaudio there.
1135                         #
1136                         CFLAGS="$wireshark_save_CFLAGS"
1137                         CPPFLAGS="$wireshark_save_CPPFLAGS"
1138                         LDFLAGS="$wireshark_save_LDFLAGS"
1139                         LIBS="$wireshark_save_LIBS"
1140                         PORTAUDIO_LIBS=""
1141                         # User requested --with-portaudio but it isn't available
1142                         if test "x$want_portaudio" = "xyes"
1143                         then
1144                                 AC_MSG_ERROR(Linking with libportaudio failed.)
1145                         fi
1146                         want_portaudio=no
1147                 ])
1148
1149         CFLAGS="$wireshark_save_CFLAGS"
1150         CPPFLAGS="$wireshark_save_CPPFLAGS"
1151         LDFLAGS="$wireshark_save_LDFLAGS"
1152         LIBS="$wireshark_save_LIBS"
1153         AC_SUBST(PORTAUDIO_LIBS)
1154         AC_SUBST(PORTAUDIO_INCLUDES)
1155
1156         fi
1157 ])
1158
1159 #
1160 # AC_WIRESHARK_RPM_CHECK
1161 # Looks for the rpm program, and checks to see if we can redefine "_topdir".
1162 #
1163 AC_DEFUN([AC_WIRESHARK_RPM_CHECK],
1164 [
1165         AC_CHECK_PROG(ac_cv_wireshark_have_rpm, rpm, "yes", "no")
1166         if test "x$ac_cv_wireshark_have_rpm" = "xyes"; then
1167                 rpm --define '_topdir /tmp' > /dev/null 2>&1
1168                 AC_MSG_CHECKING(to see if we can redefine _topdir)
1169                 if test $? -eq 0 ; then
1170                         AC_MSG_RESULT(yes)
1171                         HAVE_RPM=yes
1172                 else
1173                         AC_MSG_RESULT(no.  You'll have to build packages manually.)
1174                         HAVE_RPM=no
1175                 fi
1176         fi
1177 ])
1178
1179 #
1180 # AC_WIRESHARK_GNU_SED_CHECK
1181 # Checks if GNU sed is the first sed in PATH.
1182 #
1183 AC_DEFUN([AC_WIRESHARK_GNU_SED_CHECK],
1184 [
1185         AC_MSG_CHECKING(for GNU sed as first sed in PATH)
1186         if  ( sh -c "sed --version" </dev/null 2> /dev/null | grep "GNU sed" 2>&1 > /dev/null ) ;  then
1187                 AC_MSG_RESULT(yes)
1188                 HAVE_GNU_SED=yes
1189         else
1190                 AC_MSG_RESULT(no)
1191                 HAVE_GNU_SED=no
1192         fi
1193 ])
1194
1195 #
1196 # AC_WIRESHARK_C_ARES_CHECK
1197 #
1198 AC_DEFUN([AC_WIRESHARK_C_ARES_CHECK],
1199 [
1200         want_c_ares=defaultyes
1201
1202         if test "x$want_c_ares" = "xdefaultyes"; then
1203                 want_c_ares=yes
1204                 if test "x$ac_cv_enable_usr_local" = "xyes" ; then
1205                         withval=/usr/local
1206                         if test -d "$withval"; then
1207                                 AC_WIRESHARK_ADD_DASH_L(LDFLAGS, ${withval}/lib)
1208                         fi
1209                 fi
1210         fi
1211
1212         if test "x$want_c_ares" = "xyes"; then
1213                 AC_CHECK_LIB(cares, ares_init,
1214                   [
1215                     C_ARES_LIBS=-lcares
1216                 AC_DEFINE(HAVE_C_ARES, 1, [Define to use c-ares library])
1217                 have_good_c_ares=yes
1218                   ],, $SOCKET_LIBS $NSL_LIBS
1219                 )
1220         else
1221                 AC_MSG_RESULT(not required)
1222         fi
1223 ])
1224
1225
1226 #
1227 # AC_WIRESHARK_ADNS_CHECK
1228 #
1229 AC_DEFUN([AC_WIRESHARK_ADNS_CHECK],
1230 [
1231         want_adns=defaultyes
1232
1233         if test "x$want_adns" = "xdefaultyes"; then
1234                 want_adns=yes
1235                 if test "x$ac_cv_enable_usr_local" = "xyes" ; then
1236                         withval=/usr/local
1237                         if test -d "$withval"; then
1238                                 AC_WIRESHARK_ADD_DASH_L(LDFLAGS, ${withval}/lib)
1239                         fi
1240                 fi
1241         fi
1242
1243         if test "x$want_adns" = "xyes"; then
1244                 AC_CHECK_LIB(adns, adns_init,
1245                   [
1246                     ADNS_LIBS=-ladns
1247                 AC_DEFINE(HAVE_GNU_ADNS, 1, [Define to use GNU ADNS library])
1248                 have_good_adns=yes
1249                   ],, $SOCKET_LIBS $NSL_LIBS
1250                 )
1251         else
1252                 AC_MSG_RESULT(not required)
1253         fi
1254 ])
1255
1256
1257 #
1258 # AC_WIRESHARK_LIBCAP_CHECK
1259 #
1260 AC_DEFUN([AC_WIRESHARK_LIBCAP_CHECK],
1261 [
1262         want_libcap=defaultyes
1263
1264         if test "x$want_libcap" = "xdefaultyes"; then
1265                 want_libcap=yes
1266                 if test "x$ac_cv_enable_usr_local" = "xyes" ; then
1267                         withval=/usr/local
1268                         if test -d "$withval"; then
1269                                 AC_WIRESHARK_ADD_DASH_L(LDFLAGS, ${withval}/lib)
1270                         fi
1271                 fi
1272         fi
1273
1274         if test "x$want_libcap" = "xyes"; then
1275                 AC_CHECK_LIB(cap, cap_set_flag,
1276                   [
1277                     LIBCAP_LIBS=-lcap
1278                 AC_DEFINE(HAVE_LIBCAP, 1, [Define to use the libcap library])
1279                 have_good_libcap=yes
1280                   ],,
1281                 )
1282         else
1283                 AC_MSG_RESULT(not required)
1284         fi
1285 ])
1286
1287
1288 #
1289 # AC_WIRESHARK_KRB5_CHECK
1290 #
1291 AC_DEFUN([AC_WIRESHARK_KRB5_CHECK],
1292 [
1293         wireshark_save_CFLAGS="$CFLAGS"
1294         wireshark_save_CPPFLAGS="$CPPFLAGS"
1295         if test "x$krb5_dir" != "x"
1296         then
1297           #
1298           # The user specified a directory in which kerberos resides,
1299           # so add the "include" subdirectory of that directory to
1300           # the include file search path and the "lib" subdirectory
1301           # of that directory to the library search path.
1302           #
1303           # XXX - if there's also a kerberos in a directory that's
1304           # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
1305           # make us find the version in the specified directory,
1306           # as the compiler and/or linker will search that other
1307           # directory before it searches the specified directory.
1308           #
1309           CFLAGS="$CFLAGS -I$krb5_dir/include"
1310           CPPFLAGS="$CPPFLAGS -I$krb5_dir/include"
1311           ac_heimdal_version=`grep heimdal $krb5_dir/include/krb5.h | head -n 1 | sed 's/^.*heimdal.*$/HEIMDAL/'`
1312           ac_mit_version=`grep 'Massachusetts Institute of Technology' $krb5_dir/include/krb5.h | head -n 1 | sed 's/^.*Massachusetts Institute of Technology.*$/MIT/'`
1313           ac_krb5_version="$ac_heimdal_version$ac_mit_version"
1314           if test "x$ac_krb5_version" = "xHEIMDAL"
1315               KRB5_LIBS="-L$krb5_dir/lib -lkrb5 -lasn1 $SSL_LIBS -lroken -lcrypt"
1316           then
1317               KRB5_LIBS="-L$krb5_dir/lib -lkrb5 -lk5crypto -lcom_err"
1318           fi
1319           if test "x$ac_krb5_version" = "xMIT"
1320           then
1321             AC_DEFINE(HAVE_MIT_KERBEROS, 1, [Define to use MIT kerberos])
1322           fi
1323         else
1324           AC_PATH_PROG(KRB5_CONFIG, krb5-config)
1325           if test -x "$KRB5_CONFIG"
1326           then
1327             KRB5_FLAGS=`"$KRB5_CONFIG" --cflags`
1328             KRB5_LIBS=`"$KRB5_CONFIG" --libs`
1329             CFLAGS="$CFLAGS $KRB5_FLAGS"
1330             CPPFLAGS="$CPPFLAGS $KRB5_FLAGS"
1331             #
1332             # If -lcrypto is in KRB5_FLAGS, we require it to build
1333             # with Heimdal/MIT.  We don't want to built with it by
1334             # default, due to annoying license incompatibilities
1335             # between the OpenSSL license and the GPL, so:
1336             #
1337             #   if SSL_LIBS is set to a non-empty string, we
1338             #   remove -lcrypto from KRB5_LIBS and replace
1339             #   it with SSL_LIBS;
1340             #
1341             #   if SSL_LIBS is not set to a non-empty string
1342             #   we fail with an appropriate error message.
1343             #
1344             case "$KRB5_LIBS" in
1345             *-lcrypto*)
1346                 if test ! -z "$SSL_LIBS"
1347                 then
1348                     KRB5_LIBS=`echo $KRB5_LIBS | sed 's/-lcrypto//'`
1349                     KRB5_LIBS="$KRB5_LIBS $SSL_LIBS"
1350                 else
1351                     AC_MSG_ERROR([Kerberos library requires -lcrypto but --with-ssl not specified])
1352                 fi
1353                 ;;
1354             esac
1355             ac_krb5_version=`"$KRB5_CONFIG" --version | head -n 1 | sed -e 's/^.*heimdal.*$/HEIMDAL/' -e 's/^Kerberos .*$/MIT/'`
1356           fi
1357         fi
1358
1359         #
1360         # Make sure we have "krb5.h".  If we don't, it means we probably
1361         # don't have kerberos, so don't use it.
1362         #
1363         AC_CHECK_HEADER(krb5.h,,
1364           [
1365             if test "x$krb5_dir" != "x"
1366             then
1367               #
1368               # The user used "--with-krb5=" to specify a directory
1369               # containing kerberos, but we didn't find the header file
1370               # there; that either means they didn't specify the
1371               # right directory or are confused about whether kerberos
1372               # is, in fact, installed.  Report the error and give up.
1373               #
1374               AC_MSG_ERROR([kerberos header not found in directory specified in --with-krb5])
1375             else
1376               if test "x$want_krb5" = "xyes"
1377               then
1378                 #
1379                 # The user tried to force us to use the library, but we
1380                 # couldn't find the header file; report an error.
1381                 #
1382                 AC_MSG_ERROR(Header file krb5.h not found.)
1383               else
1384                 #
1385                 # We couldn't find the header file; don't use the
1386                 # library, as it's probably not present.
1387                 #
1388                 want_krb5=no
1389                 AC_MSG_RESULT(No Heimdal or MIT header found - disabling dissection for some kerberos data in packet decoding)
1390               fi
1391             fi
1392           ])
1393
1394         if test "x$want_krb5" != "xno"
1395         then
1396             #
1397             # Well, we at least have the krb5 header file.
1398             # Check whether this is Heimdal or MIT.
1399             #
1400             AC_MSG_CHECKING(whether the Kerberos library is Heimdal or MIT)
1401             if test "x$ac_krb5_version" = "xHEIMDAL" -o "x$ac_krb5_version" = "xMIT"
1402             then
1403                 #
1404                 # Yes.
1405                 # Check whether we have krb5_kt_resolve - and whether
1406                 # we need to link with -lresolv when linking with
1407                 # the Kerberos library.
1408                 #
1409                 AC_MSG_RESULT($ac_krb5_version)
1410                 wireshark_save_LIBS="$LIBS"
1411                 found_krb5_kt_resolve=no
1412                 for extras in "" "-lresolv"
1413                 do
1414                     LIBS="$KRB5_LIBS $extras"
1415                     if test -z "$extras"
1416                     then
1417                         AC_MSG_CHECKING([whether $ac_krb5_version includes krb5_kt_resolve])
1418                     else
1419                         AC_MSG_CHECKING([whether $ac_krb5_version includes krb5_kt_resolve (linking with $extras)])
1420                     fi
1421                     AC_TRY_LINK(
1422                         [
1423                         ],
1424                         [
1425                             krb5_kt_resolve();
1426                         ],
1427                         [
1428                             #
1429                             # We found "krb5_kt_resolve()", and required
1430                             # the libraries in extras as well.
1431                             #
1432                             AC_MSG_RESULT(yes)
1433                             KRB5_LIBS="$LIBS"
1434                             AC_DEFINE(HAVE_KERBEROS, 1, [Define to use kerberos])
1435                             if test "x$ac_krb5_version" = "xHEIMDAL"
1436                             then
1437                                 AC_DEFINE(HAVE_HEIMDAL_KERBEROS, 1, [Define to use heimdal kerberos])
1438                             elif test "x$ac_krb5_version" = "xMIT"
1439                             then
1440                                 AC_DEFINE(HAVE_MIT_KERBEROS, 1, [Define to use MIT kerberos])
1441                             fi
1442                             found_krb5_kt_resolve=yes
1443                             break
1444                         ],
1445                         [
1446                             AC_MSG_RESULT(no)
1447                         ])
1448                 done
1449                 if test "$found_krb5_kt_resolve" = no
1450                 then
1451                     #
1452                     # We didn't find "krb5_kt_resolve()" in the
1453                     # Kerberos library, even when we tried linking
1454                     # with -lresolv; we can't link with kerberos.
1455                     #
1456                     if test "x$want_krb5" = "xyes"
1457                     then
1458                         #
1459                         # The user tried to force us to use the library,
1460                         # but we can't do so; report an error.
1461                         #
1462                         AC_MSG_ERROR(Usable $ac_krb5_version not found)
1463                     else
1464                         #
1465                         # Restore the versions of CFLAGS and CPPFLAGS
1466                         # from before we added the flags for Kerberos.
1467                         #
1468                         AC_MSG_RESULT(Usable $ac_krb5_version not found - disabling dissection for some kerberos data in packet decoding)
1469                         CFLAGS="$wireshark_save_CFLAGS"
1470                         CPPFLAGS="$wireshark_save_CPPFLAGS"
1471                         KRB5_LIBS=""
1472                         want_krb5=no
1473                     fi
1474                 else
1475                     #
1476                     # We can link with Kerberos; see whether krb5.h
1477                     # defines KEYTYPE_ARCFOUR_56 (where "defines" means
1478                     # "as a #define or as an enum member).
1479                     #
1480                     AC_MSG_CHECKING([whether krb5.h defines KEYTYPE_ARCFOUR_56])
1481                     AC_COMPILE_IFELSE(
1482                       [
1483                         AC_LANG_SOURCE(
1484                           [[
1485                             #include <krb5.h>
1486                             #include <stdio.h>
1487
1488                             main()
1489                             {
1490                               printf("%u\n", KEYTYPE_ARCFOUR_56);
1491                             }
1492                           ]])
1493                       ],
1494                       [
1495                         AC_MSG_RESULT(yes)
1496                         AC_DEFINE(HAVE_KEYTYPE_ARCFOUR_56, 1, [Define if krb5.h defines KEYTYPE_ARCFOUR_56])
1497                       ],
1498                       [
1499                         AC_MSG_RESULT(no)
1500                       ])
1501                 fi
1502                 LIBS="$wireshark_save_LIBS"
1503             else
1504                 #
1505                 # It's not Heimdal or MIT.
1506                 #
1507                 AC_MSG_RESULT(no)
1508                 if test "x$want_krb5" = "xyes"
1509                 then
1510                     #
1511                     # The user tried to force us to use the library,
1512                     # but we can't do so; report an error.
1513                     #
1514                     AC_MSG_ERROR(Kerberos not found)
1515                 else
1516                     #
1517                     # Restore the versions of CFLAGS and CPPFLAGS
1518                     # from before we added the flags for Kerberos.
1519                     #
1520                     AC_MSG_RESULT(Kerberos not found - disabling dissection for some kerberos data in packet decoding)
1521                     CFLAGS="$wireshark_save_CFLAGS"
1522                     CPPFLAGS="$wireshark_save_CPPFLAGS"
1523                     KRB5_LIBS=""
1524                     want_krb5=no
1525                 fi
1526             fi
1527         else
1528             #
1529             # The user asked us not to use Kerberos, or they didn't
1530             # say whether they wanted us to use it but we found
1531             # that we couldn't.
1532             #
1533             # Restore the versions of CFLAGS and CPPFLAGS
1534             # from before we added the flags for Kerberos.
1535             #
1536             CFLAGS="$wireshark_save_CFLAGS"
1537             CPPFLAGS="$wireshark_save_CPPFLAGS"
1538             KRB5_LIBS=""
1539             want_krb5=no
1540         fi
1541         AC_SUBST(KRB5_LIBS)
1542 ])
1543
1544 #
1545 # AC_WIRESHARK_GCC_CFLAGS_CHECK
1546 #
1547 # $1 : cflags to test
1548 #
1549 # The macro first determines if the compiler is GCC. Then compile with the
1550 # defined cflags. The defined flags are added to CFLAGS only if the compilation
1551 # succeeds.
1552 #
1553 AC_DEFUN([AC_WIRESHARK_GCC_CFLAGS_CHECK],
1554 [GCC_OPTION="$1"
1555 AC_MSG_CHECKING(whether we can add $GCC_OPTION to CFLAGS)
1556 if test "x$GCC" != "x"; then
1557   CFLAGS_saved="$CFLAGS"
1558   CFLAGS="$CFLAGS $GCC_OPTION"
1559   AC_COMPILE_IFELSE([
1560     AC_LANG_SOURCE([[
1561                       int foo;
1562                   ]])],
1563                   [
1564                     AC_MSG_RESULT(yes)
1565                   ],
1566                   [
1567                     AC_MSG_RESULT(no)
1568                     CFLAGS="$CFLAGS_saved"
1569                   ])
1570 else
1571   AC_MSG_RESULT(no)
1572 fi
1573 ])
1574
1575 #
1576 # AC_WIRESHARK_IGE_MAC_INTEGRATION_CHECK
1577 #
1578 # Checks for the presence of OS X integration functions in GTK+
1579 # http://developer.imendio.com/projects/gtk-macosx/integration
1580 #
1581 AC_DEFUN([AC_WIRESHARK_IGE_MAC_INTEGRATION_CHECK],
1582 [
1583         ac_save_CFLAGS="$CFLAGS"
1584         ac_save_LIBS="$LIBS"
1585         CFLAGS="$CFLAGS $GTK_CFLAGS"
1586         LIBS="$GTK_LIBS $LIBS"
1587         AC_CHECK_LIB(Gtk, ige_mac_menu_set_menu_bar,
1588         [
1589                 AC_DEFINE(HAVE_IGE_MAC_INTEGRATION, 1,
1590                         [Define to 1 if the GTK+ library inclues the Imendio IGE Mac OS X Integration library.])
1591                 AC_CHECK_FUNCS(ige_mac_menu_install_key_handler)
1592         ])
1593 ])
1594
1595