1 dnl Macros that test for specific features.
2 dnl This file is part of the Autoconf packaging for Ethereal.
3 dnl Copyright (C) 1998-2000 by Gerald Combs.
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.
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.
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
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.
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.
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.
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.
54 # AC_ETHEREAL_ADD_DASH_L
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.
60 # XXX - IRIX, and other OSes, may require some flag equivalent to
63 AC_DEFUN([AC_ETHEREAL_ADD_DASH_L],
74 # AC_ETHEREAL_STRUCT_SA_LEN
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_ETHEREAL_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.
83 dnl ### Checks for structure members
85 AC_DEFUN([AC_ETHEREAL_STRUCT_SA_LEN],
86 [AC_CACHE_CHECK([for sa_len in struct sockaddr], ac_cv_ethereal_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_ethereal_struct_sa_len=yes, ac_cv_ethereal_struct_sa_len=no)])
90 if test $ac_cv_ethereal_struct_sa_len = yes; then
91 AC_DEFINE(HAVE_SA_LEN, 1, [Define if sa_len field exists in struct sockaddr])
97 dnl Check whether a given format can be used to print 64-bit integers
99 AC_DEFUN([AC_ETHEREAL_CHECK_64BIT_FORMAT],
101 AC_MSG_CHECKING([whether %$1x can be used to format 64-bit integers])
106 # ifdef HAVE_INTTYPES_H
107 #include <inttypes.h>
109 #include <glibconfig.h>
111 #include <sys/types.h>
117 sprintf(strbuf, "%016$1x", t << 32);
118 if (strcmp(strbuf, "0000000100000000") == 0)
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])
129 AC_DEFINE(PRIu64, "$1u", [Format for printing 64-bit unsigned decimal numbers])
139 # AC_ETHEREAL_IPV6_STACK
141 # By Jun-ichiro "itojun" Hagino, <itojun@iijlab.net>
143 AC_DEFUN([AC_ETHEREAL_IPV6_STACK],
148 AC_MSG_CHECKING([ipv6 stack type])
149 for i in v6d toshiba kame inria zeta linux linux-glibc solaris8; do
153 #include </usr/local/v6/include/sys/types.h>
157 [v6type=$i; v6lib=v6;
158 v6libdir=/usr/local/v6/lib;
159 CFLAGS="-I/usr/local/v6/include $CFLAGS"])
163 #include <sys/param.h>
164 #ifdef _TOSHIBA_INET6
167 [v6type=$i; v6lib=inet6;
168 v6libdir=/usr/local/v6/lib;
169 CFLAGS="-DINET6 $CFLAGS"])
173 #include <netinet/in.h>
177 [v6type=$i; v6lib=inet6;
178 v6libdir=/usr/local/v6/lib;
179 CFLAGS="-DINET6 $CFLAGS"])
183 #include <netinet/in.h>
184 #ifdef IPV6_INRIA_VERSION
187 [v6type=$i; CFLAGS="-DINET6 $CFLAGS"])
191 #include <sys/param.h>
192 #ifdef _ZETA_MINAMI_INET6
195 [v6type=$i; v6lib=inet6;
196 v6libdir=/usr/local/v6/lib;
197 CFLAGS="-DINET6 $CFLAGS"])
200 if test -d /usr/inet6; then
204 CFLAGS="-DINET6 $CFLAGS"
209 #include <features.h>
210 #if defined(__GLIBC__) && defined(__GLIBC_MINOR__)
211 #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || __GLIBC__ > 2
215 [v6type=$i; v6lib=inet6; CFLAGS="-DINET6 $CFLAGS"])
218 if test "`uname -s`" = "SunOS" && test "`uname -r`" = "5.8"; then
221 [CFLAGS="-DINET6 -DSOLARIS8_INET6 $CFLAGS"]
225 if test "$v6type" != "unknown"; then
230 if test "$v6lib" != "none"; then
231 for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do
232 if test -d $dir -a -f $dir/lib$v6lib.a; then
233 LIBS="-L$dir $LIBS -l$v6lib"
241 AC_MSG_RESULT(["$v6type, $v6lib"])
245 # AC_ETHEREAL_GETHOSTBY_LIB_CHECK
247 # Checks whether we need "-lnsl" to get "gethostby*()", which we use
250 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
251 # GNU Autoconf 2.13; the comment came from there.
252 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
254 AC_DEFUN([AC_ETHEREAL_GETHOSTBY_LIB_CHECK],
256 # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
257 # to get the SysV transport functions.
258 # chad@anasazi.com says the Pyramid MIS-ES running DC/OSx (SVR4)
260 # The nsl library prevents programs from opening the X display
261 # on Irix 5.2, according to dickey@clark.net.
262 AC_CHECK_FUNC(gethostbyname, ,
263 AC_CHECK_LIB(nsl, gethostbyname, NSL_LIBS="-lnsl"))
268 # AC_ETHEREAL_SOCKET_LIB_CHECK
270 # Checks whether we need "-lsocket" to get "socket()", which is used
271 # by libpcap on some platforms - and, in effect, "gethostby*()" on
272 # most if not all platforms (so that it can use NIS or DNS or...
273 # to look up host names).
275 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
276 # GNU Autoconf 2.13; the comment came from there.
277 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
279 # We use "connect" because that's what AC_PATH_XTRA did.
281 AC_DEFUN([AC_ETHEREAL_SOCKET_LIB_CHECK],
283 # lieder@skyler.mavd.honeywell.com says without -lsocket,
284 # socket/setsockopt and other routines are undefined under SCO ODT
285 # 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary
286 # on later versions), says simon@lia.di.epfl.ch: it contains
287 # gethostby* variants that don't use the nameserver (or something).
288 # -lsocket must be given before -lnsl if both are needed.
289 # We assume that if connect needs -lnsl, so does gethostbyname.
290 AC_CHECK_FUNC(connect, ,
291 AC_CHECK_LIB(socket, connect, SOCKET_LIBS="-lsocket",
292 AC_MSG_ERROR(Function 'socket' not found.), $NSL_LIBS))
293 AC_SUBST(SOCKET_LIBS)
297 # AC_ETHEREAL_PCAP_CHECK
299 AC_DEFUN([AC_ETHEREAL_PCAP_CHECK],
301 if test -z "$pcap_dir"
304 # XXX need to set a var AC_CHECK_HEADER(pcap.h,,)
307 # The user didn't specify a directory in which libpcap resides;
308 # we assume that the current library search path will work,
309 # but we may have to look for the header in a "pcap"
310 # subdirectory of "/usr/include" or "/usr/local/include",
311 # as some systems apparently put "pcap.h" in a "pcap"
312 # subdirectory, and we also check "$prefix/include" - and
313 # "$prefix/include/pcap", in case $prefix is set to
314 # "/usr/include" or "/usr/local/include".
316 # XXX - should we just add "$prefix/include" to the include
317 # search path and "$prefix/lib" to the library search path?
319 AC_MSG_CHECKING(for extraneous pcap header directories)
321 pcap_dir_list="/usr/include/pcap $prefix/include/pcap $prefix/include"
322 if test "x$ac_cv_enable_usr_local" = "xyes" ; then
323 pcap_dir_list="$pcap_dir_list /usr/local/include/pcap"
325 for pcap_dir in $pcap_dir_list
327 if test -d $pcap_dir ; then
328 if test x$pcap_dir != x/usr/include -a x$pcap_dir != x/usr/local/include ; then
329 CFLAGS="$CFLAGS -I$pcap_dir"
330 CPPFLAGS="$CPPFLAGS -I$pcap_dir"
332 found_pcap_dir=" $found_pcap_dir -I$pcap_dir"
337 if test "$found_pcap_dir" != "" ; then
338 AC_MSG_RESULT(found --$found_pcap_dir added to CFLAGS)
340 AC_MSG_RESULT(not found)
344 # The user specified a directory in which libpcap resides,
345 # so add the "include" subdirectory of that directory to
346 # the include file search path and the "lib" subdirectory
347 # of that directory to the library search path.
349 # XXX - if there's also a libpcap in a directory that's
350 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
351 # make us find the version in the specified directory,
352 # as the compiler and/or linker will search that other
353 # directory before it searches the specified directory.
355 CFLAGS="$CFLAGS -I$pcap_dir/include"
356 CPPFLAGS="$CPPFLAGS -I$pcap_dir/include"
357 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, $pcap_dir/lib)
361 AC_CHECK_HEADER(pcap.h,,
362 AC_MSG_ERROR([[Header file pcap.h not found; if you installed libpcap
363 from source, did you also do \"make install-incl\", and if you installed a
364 binary package of libpcap, is there also a developer's package of libpcap,
365 and did you also install that package?]]))
368 # Check to see if we find "pcap_open_live" in "-lpcap".
370 AC_CHECK_LIB(pcap, pcap_open_live,
373 AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library])
375 AC_MSG_CHECKING([for pcap_open_live in -lpcap -lcfg -lodm])
377 LIBS="-lpcap -lcfg -lodm"
383 pcap_open_live(NULL, 0, 0, 0, NULL);
387 PCAP_LIBS="-lpcap -lcfg -lodm"
388 AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library])
392 AC_MSG_ERROR([Library libpcap not found.])
395 ], $SOCKET_LIBS $NSL_LIBS)
399 # Check whether various variables and functions are defined by
403 AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
404 LIBS="$PCAP_LIBS $SOCKET_LIBS $NSL_LIBS $LIBS"
408 extern char *pcap_version;
411 printf ("%s\n", pcap_version);
413 ac_cv_pcap_version_defined=yes,
414 ac_cv_pcap_version_defined=no,
415 [echo $ac_n "cross compiling; assumed OK... $ac_c"])
416 if test "$ac_cv_pcap_version_defined" = yes ; then
418 AC_DEFINE(HAVE_PCAP_VERSION, 1, [Define if libpcap version is known])
422 AC_CHECK_FUNCS(pcap_open_dead pcap_freecode)
424 # Later versions of Mac OS X 10.3[.x] ship a pcap.h that
425 # doesn't define pcap_if_t but ship an 0.8[.x] libpcap,
426 # so the library has "pcap_findalldevs()", but pcap.h
427 # doesn't define "pcap_if_t" so you can't actually *use*
428 # "pcap_findalldevs()".
430 # That even appears to be true of systems shipped with
431 # 10.3.4, so it doesn't appear only to be a case of
432 # Software Update not updating header files.
434 # (You can work around this by installing the 0.8 header
437 AC_CACHE_CHECK([whether pcap_findalldevs is present and usable],
438 [ac_cv_func_pcap_findalldevs],
447 pcap_if_t *devpointer;
450 pcap_findalldevs(&devpointer, errbuf);
455 ac_cv_func_pcap_findalldevs=yes
458 ac_cv_func_pcap_findalldevs=no
462 # Don't check for other new routines that showed up after
463 # "pcap_findalldevs()" if we don't have a usable
464 # "pcap_findalldevs()", so we don't end up using them if the
465 # "pcap.h" is crufty and old and doesn't declare them.
467 if test $ac_cv_func_pcap_findalldevs = "yes" ; then
468 AC_DEFINE(HAVE_PCAP_FINDALLDEVS, 1,
469 [Define to 1 if you have the `pcap_findalldevs' function and a pcap.h that declares pcap_if_t.])
470 AC_CHECK_FUNCS(pcap_datalink_val_to_name pcap_datalink_name_to_val)
471 AC_CHECK_FUNCS(pcap_list_datalinks pcap_set_datalink pcap_lib_version)
472 AC_CHECK_FUNCS(pcap_get_selectable_fd)
478 # AC_ETHEREAL_ZLIB_CHECK
480 AC_DEFUN([AC_ETHEREAL_ZLIB_CHECK],
482 if test "x$zlib_dir" != "x"
485 # The user specified a directory in which zlib resides,
486 # so add the "include" subdirectory of that directory to
487 # the include file search path and the "lib" subdirectory
488 # of that directory to the library search path.
490 # XXX - if there's also a zlib in a directory that's
491 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
492 # make us find the version in the specified directory,
493 # as the compiler and/or linker will search that other
494 # directory before it searches the specified directory.
496 ethereal_save_CFLAGS="$CFLAGS"
497 CFLAGS="$CFLAGS -I$zlib_dir/include"
498 ethereal_save_CPPFLAGS="$CPPFLAGS"
499 CPPFLAGS="$CPPFLAGS -I$zlib_dir/include"
500 ethereal_save_LIBS="$LIBS"
501 AC_ETHEREAL_ADD_DASH_L(LIBS, $zlib_dir/lib)
505 # Make sure we have "zlib.h". If we don't, it means we probably
506 # don't have zlib, so don't use it.
508 AC_CHECK_HEADER(zlib.h,,
510 if test "x$zlib_dir" != "x"
513 # The user used "--with-zlib=" to specify a directory
514 # containing zlib, but we didn't find the header file
515 # there; that either means they didn't specify the
516 # right directory or are confused about whether zlib
517 # is, in fact, installed. Report the error and give up.
519 AC_MSG_ERROR([zlib header not found in directory specified in --with-zlib])
521 if test "x$want_zlib" = "xyes"
524 # The user tried to force us to use the library, but we
525 # couldn't find the header file; report an error.
527 AC_MSG_ERROR(Header file zlib.h not found.)
530 # We couldn't find the header file; don't use the
531 # library, as it's probably not present.
538 if test "x$want_zlib" != "xno"
541 # Well, we at least have the zlib header file.
543 # Check for "gzgets()" in zlib, because we need it, but
544 # some older versions of zlib don't have it. It appears
545 # from the zlib ChangeLog that any released version of zlib
546 # with "gzgets()" should have the other routines we
547 # depend on, such as "gzseek()", "gztell()", and "zError()".
549 # Another reason why we require "gzgets()" is that
550 # some versions of zlib that didn't have it, such
551 # as 1.0.8, had a bug in "gzseek()" that meant that it
552 # doesn't work correctly on uncompressed files; this
553 # means we cannot use version 1.0.8. (Unfortunately,
554 # that's the version that comes with recent X11 source,
555 # and many people who install XFree86 on their Slackware
556 # boxes don't realize that they should configure it to
557 # use the native zlib rather than building and installing
558 # the crappy old version that comes with XFree86.)
560 # I.e., we can't just avoid using "gzgets()", as
561 # versions of zlib without "gzgets()" are likely to have
562 # a broken "gzseek()".
564 AC_CHECK_LIB(z, gzgets,
566 if test "x$zlib_dir" != "x"
569 # Put the "-I" and "-L" flags for zlib at
570 # the beginning of CFLAGS, CPPFLAGS, and
574 AC_ETHEREAL_ADD_DASH_L(LIBS, $zlib_dir/lib)
575 LIBS="$LIBS -lz $ethereal_save_LIBS"
579 AC_DEFINE(HAVE_LIBZ, 1, [Define to use libz library])
581 if test "x$zlib_dir" != "x"
584 # Restore the versions of CFLAGS, CPPFLAGS,
585 # and LIBS before we added the "-with-zlib="
586 # directory, as we didn't actually find
587 # zlib there, or didn't find a zlib that
588 # contains gzgets there.
590 CFLAGS="$ethereal_save_CFLAGS"
591 CPPFLAGS="$ethereal_save_CPPFLAGS"
592 LIBS="$ethereal_save_LIBS"
598 if test "x$want_zlib" != "xno"
601 # Well, we at least have the zlib header file and a zlib
604 # Now check for "gzgets()" in zlib when linking with the
605 # linker flags for GTK+ applications; people often grab
606 # XFree86 source and build and install it on their systems,
607 # and they appear sometimes to misconfigure XFree86 so that,
608 # even on systems with zlib, it assumes there is no zlib,
609 # so the XFree86 build process builds and installs its
610 # own zlib in the X11 library directory.
612 # The XFree86 zlib is an older version that lacks
613 # "gzgets()", and that's the zlib with which Ethereal
614 # gets linked, so the build of Ethereal fails.
616 ac_save_CFLAGS="$CFLAGS"
618 CFLAGS="$CFLAGS $GTK_CFLAGS"
619 LIBS="$GTK_LIBS -lz $LIBS"
620 AC_MSG_CHECKING([for gzgets missing when linking with X11])
621 AC_TRY_LINK_FUNC(gzgets, AC_MSG_RESULT(no),
624 AC_MSG_ERROR(old zlib found when linking with X11 - get rid of old zlib.)
626 CFLAGS="$ac_save_CFLAGS"
632 # AC_ETHEREAL_LIBPCRE_CHECK
634 AC_DEFUN([AC_ETHEREAL_LIBPCRE_CHECK],
636 if test "x$pcre_dir" != "x"
639 # The user specified a directory in which libpcre resides,
640 # so add the "include" subdirectory of that directory to
641 # the include file search path and the "lib" subdirectory
642 # of that directory to the library search path.
644 # XXX - if there's also a libpcre in a directory that's
645 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
646 # make us find the version in the specified directory,
647 # as the compiler and/or linker will search that other
648 # directory before it searches the specified directory.
650 ethereal_save_CFLAGS="$CFLAGS"
651 CFLAGS="$CFLAGS -I$pcre_dir/include"
652 ethereal_save_CPPFLAGS="$CPPFLAGS"
653 CPPFLAGS="$CPPFLAGS -I$pcre_dir/include"
654 ethereal_save_LIBS="$LIBS"
656 ethereal_save_LDFLAGS="$LDFLAGS"
657 LDFLAGS="$LDFLAGS -L$pcre_dir/lib"
661 # Make sure we have "pcre.h". If we don't, it means we probably
662 # don't have libpcre, so don't use it.
664 AC_CHECK_HEADER(pcre.h,,
666 if test "x$pcre_dir" != "x"
669 # The user used "--with-pcre=" to specify a directory
670 # containing libpcre, but we didn't find the header file
671 # there; that either means they didn't specify the
672 # right directory or are confused about whether libpcre
673 # is, in fact, installed. Report the error and give up.
675 AC_MSG_ERROR([libpcre header not found in directory specified in --with-pcre])
677 if test "x$want_pcre" = "xyes"
680 # The user tried to force us to use the library, but we
681 # couldn't find the header file; report an error.
683 AC_MSG_ERROR(Header file pcre.h not found.)
686 # We couldn't find the header file; don't use the
687 # library, as it's probably not present.
694 if test "x$want_pcre" != "xno"
697 # Well, we at least have the pcre header file.
699 # We're only using standard functions from libpcre,
700 # so we don't need to perform extra checks.
702 AC_CHECK_LIB(pcre, pcre_compile,
704 if test "x$pcre_dir" != "x"
707 # Put the "-I" and "-L" flags for pcre at
708 # the beginning of CFLAGS, CPPFLAGS,
711 PCRE_LIBS="-L$pcre_dir/lib -lpcre $ethereal_save_LIBS"
715 AC_DEFINE(HAVE_LIBPCRE, 1, [Define to use libpcre library])
717 if test "x$pcre_dir" != "x"
720 # Restore the versions of CFLAGS, CPPFLAGS,
721 # LDFLAGS, and LIBS before we added the
722 # "--with-pcre=" directory, as we didn't
723 # actually find pcre there.
725 CFLAGS="$ethereal_save_CFLAGS"
726 CPPFLAGS="$ethereal_save_CPPFLAGS"
727 LDFLAGS="$ethereal_save_LDFLAGS"
728 LIBS="$ethereal_save_LIBS"
738 # AC_ETHEREAL_NETSNMP_CHECK
740 AC_DEFUN([AC_ETHEREAL_NETSNMP_CHECK],
742 dnl get the net-snmp-config binary
743 if test "x$netsnmpconfig" = "x" ; then
745 # The user didn't specify where net-snmp-config is
746 # located; search for it.
748 AC_PATH_PROG(NETSNMPCONFIG, net-snmp-config)
750 NETSNMPCONFIG=$netsnmpconfig
751 if test ! -x $NETSNMPCONFIG -o ! -f $NETSNMPCONFIG ; then
752 NETSNMPCONFIG=$netsnmpconfig/bin/net-snmp-config
753 if test ! -x $NETSNMPCONFIG -o ! -f $NETSNMPCONFIG ; then
754 AC_MSG_ERROR(Invalid net-snmp-config: $netsnmpconfig)
760 # XXX - check whether $NETSNMPCONFIG is executable?
761 # if test "x$NETSNMPCONFIG" != "xno" -a "x$NETSNMPCONFIG" != "x" -a -x "$NETSNMPCONFIG" ; then
762 # We already did that if it was set; presumably AC_PATH_PROG
763 # will fail if it doesn't find an executable version.
765 if test "x$NETSNMPCONFIG" != "x" ; then
766 dnl other choices for flags to use here: could also use
767 dnl --prefix or --exec-prefix if you don't want the full list.
770 # Save the current settings of CFLAGS and CPPFLAGS, and add
771 # the output of "$NETSNMPCONFIG --cflags" to it, so that when
772 # searching for the Net-SNMP headers, we look in whatever
773 # directory that output specifies.
775 ethereal_save_CFLAGS="$CFLAGS"
776 ethereal_save_CPPFLAGS="$CPPFLAGS"
777 CFLAGS="$CFLAGS `$NETSNMPCONFIG --cflags`"
778 CPPFLAGS="$CPPFLAGS `$NETSNMPCONFIG --cflags`"
780 AC_CHECK_HEADERS(net-snmp/net-snmp-config.h net-snmp/library/default_store.h)
781 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
782 SNMP_LIBS=`$NETSNMPCONFIG --libs`
783 if echo "$SNMP_LIBS" | grep crypto >/dev/null && test "x$SSL_LIBS" = "x"; then
784 if test "x$want_netsnmp" = "xyes" ; then
785 AC_MSG_ERROR(Net-SNMP requires openssl but ssl not enabled)
787 AC_MSG_RESULT(Net-SNMP requires openssl but ssl not enabled - disabling Net-SNMP)
789 CFLAGS="$ethereal_save_CFLAGS"
790 CPPFLAGS="$ethereal_save_CPPFLAGS"
793 AC_DEFINE(HAVE_NET_SNMP, 1, [Define to enable support for Net-SNMP])
797 if test "x$want_netsnmp" = "xyes" ; then
798 AC_MSG_ERROR(Net-SNMP not found)
801 # Restore the versions of CFLAGS and
802 # CPPFLAGS before we added the output
803 # of '$NETSNMPCONFIG --cflags", as we
804 # didn't actually find Net-SNMP there.
806 CFLAGS="$ethereal_save_CFLAGS"
807 CPPFLAGS="$ethereal_save_CPPFLAGS"
814 # AC_ETHEREAL_UCDSNMP_CHECK
816 AC_DEFUN([AC_ETHEREAL_UCDSNMP_CHECK],
818 if test "x$ucdsnmp_dir" != "x"
821 # The user specified a directory in which UCD SNMP resides,
822 # so add the "include" subdirectory of that directory to
823 # the include file search path and the "lib" subdirectory
824 # of that directory to the library search path.
826 # XXX - if there's also a libpcap in a directory that's
827 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
828 # make us find the version in the specified directory,
829 # as the compiler and/or linker will search that other
830 # directory before it searches the specified directory.
832 CFLAGS="$CFLAGS -I$ucdsnmp_dir/include"
833 CPPFLAGS="$CPPFLAGS -I$ucdsnmp_dir/include"
834 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, $ucdsnmp_dir/lib)
838 # Check for one of the UCD SNMP header files we include,
839 # to see whether we have UCD SNMP installed.
841 AC_CHECK_HEADER(ucd-snmp/ucd-snmp-config.h,
844 # UCD SNMP or Net-SNMP might require various helper
845 # libraries on various platforms, such as "-ldes425"
846 # in "/usr/kerberos/lib" on some versions of Red
847 # Hat Linux, or "-lkstat" on Solaris.
849 # It might also require "-lcrypto" on some platforms;
850 # if the user didn't specify --with-ssl, we check
851 # whether it would have made a difference and, if so,
852 # we tell the user that they needed to request it.
853 # (There are annoying licensing issues with it and
854 # GPL'ed code, so we don't include it by default.)
856 # XXX - autoconf really needs a way to test for
857 # a given routine in a given library *and* to test
858 # whether additional "-L"/"-R"/whatever flags are
859 # needed *before* the "-l" flag for the library
860 # and to test whether additional libraries are
861 # needed after the library *and* to cache all that
864 ethereal_save_LIBS="$LIBS"
865 found_sprint_realloc_objid=no
866 for extras in "" "-L/usr/kerberos/lib -ldes425" "-lkstat"
868 LIBS="-lsnmp $extras $SOCKET_LIBS $NSL_LIBS $SSL_LIBS"
871 AC_MSG_CHECKING([whether UCD SNMP includes sprint_realloc_objid])
873 AC_MSG_CHECKING([whether UCD SNMP includes sprint_realloc_objid (linking with $extras)])
879 sprint_realloc_objid();
883 # We found "sprint_realloc_objid()",
884 # and required the libraries in
888 SNMP_LIBS="-lsnmp $extras"; break;
889 found_sprint_realloc_objid=yes
894 # The link failed. If they didn't ask
895 # for SSL, try linking with -lcrypto
896 # as well, and if *that* succeeds,
897 # tell them they'll need to specify
901 if test "x$want_ssl" = "xno"
903 LIBS="$LIBS -lcrypto"
908 sprint_realloc_objid();
912 # It worked with -lcrypto; tell
913 # them they'll need to specify
916 AC_MSG_ERROR([UCD SNMP requires -lcrypto but --with-ssl not specified])
921 LIBS="$ethereal_save_LIBS"
924 # If we didn't find "sprint_realloc_objid()", fail.
925 # Either the user needs a newer version of UCD SNMP
926 # with "sprint_realloc_objid()", or they may need to
927 # specify "--with-ssl".
929 if test "$found_snmp_sprint_realloc_objid" = no; then
930 AC_MSG_ERROR([UCD SNMP header files found, but sprint_realloc_objid not found in SNMP library.])
934 # We found it, so we have UCD SNMP.
936 AC_DEFINE(HAVE_UCD_SNMP, 1, [Define to enable support for UCD-SNMP])
940 # No, we don't have it.
941 # If the user explicitly asked for UCD SNMP, fail,
942 # otherwise just don't use the UCD SNMP library.
944 if test "x$want_ucdsnmp" = "xyes" ; then
945 AC_MSG_ERROR(Header file ucd-snmp/snmp.h not found.)
951 # AC_ETHEREAL_RPM_CHECK
952 # Looks for the rpm program, and checks to see if we can redefine "_topdir".
954 AC_DEFUN([AC_ETHEREAL_RPM_CHECK],
956 AC_CHECK_PROG(ac_cv_ethereal_have_rpm, rpm, "yes", "no")
957 if test "x$ac_cv_ethereal_have_rpm" = "xyes"; then
958 rpm --define '_topdir /tmp' > /dev/null 2>&1
959 AC_MSG_CHECKING(to see if we can redefine _topdir)
960 if test $? -eq 0 ; then
964 AC_MSG_RESULT(no. You'll have to build packages manually.)
971 # AC_ETHEREAL_GNU_SED_CHECK
972 # Checks if GNU sed is the first sed in PATH.
974 AC_DEFUN([AC_ETHEREAL_GNU_SED_CHECK],
976 AC_MSG_CHECKING(for GNU sed as first sed in PATH)
977 if ( sh -c "sed --version" </dev/null 2> /dev/null | grep "GNU sed" 2>&1 > /dev/null ) ; then
987 # AC_ETHEREAL_ADNS_CHECK
989 AC_DEFUN([AC_ETHEREAL_ADNS_CHECK],
993 if test "x$want_adns" = "xdefaultyes"; then
996 if test -d "$withval"; then
997 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
1001 if test "x$want_adns" = "xyes"; then
1002 AC_CHECK_LIB(adns, adns_init,
1005 AC_DEFINE(HAVE_GNU_ADNS, 1, [Define to use GNU ADNS library])
1007 ],, $SOCKET_LIBS $NSL_LIBS
1010 AC_MSG_RESULT(not required)
1016 # AC_ETHEREAL_KRB5_CHECK
1018 AC_DEFUN([AC_ETHEREAL_KRB5_CHECK],
1020 ethereal_save_CFLAGS="$CFLAGS"
1021 ethereal_save_CPPFLAGS="$CPPFLAGS"
1022 if test "x$krb5_dir" != "x"
1025 # The user specified a directory in which kerberos resides,
1026 # so add the "include" subdirectory of that directory to
1027 # the include file search path and the "lib" subdirectory
1028 # of that directory to the library search path.
1030 # XXX - if there's also a kerberos in a directory that's
1031 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
1032 # make us find the version in the specified directory,
1033 # as the compiler and/or linker will search that other
1034 # directory before it searches the specified directory.
1036 CFLAGS="$CFLAGS -I$krb5_dir/include"
1037 CPPFLAGS="$CPPFLAGS -I$krb5_dir/include"
1038 ac_heimdal_version=`grep heimdal $krb5_dir/include/krb5.h | head -n 1 | sed 's/^.*heimdal.*$/HEIMDAL/'`
1039 ac_mit_version=`grep 'Massachusetts Institute of Technology' $krb5_dir/include/krb5.h | head -n 1 | sed 's/^.*Massachusetts Institute of Technology.*$/MIT/'`
1040 ac_krb5_version="$ac_heimdal_version$ac_mit_version"
1041 if test "x$ac_krb5_version" = "xHEIMDAL"
1042 KRB5_LIBS="-L$krb5_dir/lib -lkrb5 -lasn1 $SSL_LIBS -lroken -lcrypt"
1044 KRB5_LIBS="-L$krb5_dir/lib -lkrb5 -lk5crypto -lcom_err"
1046 if test "x$ac_krb5_version" = "xMIT"
1048 AC_DEFINE(HAVE_MIT_KERBEROS, 1, [Define to use MIT kerberos])
1051 AC_PATH_PROG(KRB5_CONFIG, krb5-config)
1052 if test -x "$KRB5_CONFIG"
1054 KRB5_FLAGS=`"$KRB5_CONFIG" --cflags`
1055 KRB5_LIBS=`"$KRB5_CONFIG" --libs`
1056 CFLAGS="$CFLAGS $KRB5_FLAGS"
1057 CPPFLAGS="$CPPFLAGS $KRB5_FLAGS"
1059 # If -lcrypto is in KRB5_FLAGS, we require it to build
1060 # with Heimdal/MIT. We don't want to built with it by
1061 # default, due to annoying license incompatibilities
1062 # between the OpenSSL license and the GPL, so:
1064 # if SSL_LIBS is set to a non-empty string, we
1065 # remove -lcrypto from KRB5_LIBS and replace
1068 # if SSL_LIBS is not set to a non-empty string
1069 # we fail with an appropriate error message.
1071 case "$KRB5_LIBS" in
1073 if test ! -z "$SSL_LIBS"
1075 KRB5_LIBS=`echo $KRB5_LIBS | sed 's/-lcrypto//'`
1076 KRB5_LIBS="$KRB5_LIBS $SSL_LIBS"
1078 AC_MSG_ERROR([Kerberos library requires -lcrypto but --with-ssl not specified])
1082 ac_krb5_version=`"$KRB5_CONFIG" --version | head -n 1 | sed -e 's/^.*heimdal.*$/HEIMDAL/' -e 's/^Kerberos .*$/MIT/'`
1087 # Make sure we have "krb5.h". If we don't, it means we probably
1088 # don't have kerberos, so don't use it.
1090 AC_CHECK_HEADER(krb5.h,,
1092 if test "x$krb5_dir" != "x"
1095 # The user used "--with-krb5=" to specify a directory
1096 # containing kerberos, but we didn't find the header file
1097 # there; that either means they didn't specify the
1098 # right directory or are confused about whether kerberos
1099 # is, in fact, installed. Report the error and give up.
1101 AC_MSG_ERROR([kerberos header not found in directory specified in --with-krb5])
1103 if test "x$want_krb5" = "xyes"
1106 # The user tried to force us to use the library, but we
1107 # couldn't find the header file; report an error.
1109 AC_MSG_ERROR(Header file krb5.h not found.)
1112 # We couldn't find the header file; don't use the
1113 # library, as it's probably not present.
1116 AC_MSG_RESULT(No Heimdal or MIT header found - disabling dissection for some kerberos data in packet decoding)
1121 if test "x$want_krb5" != "xno"
1124 # Well, we at least have the krb5 header file.
1125 # Check whether this is Heimdal or MIT.
1127 AC_MSG_CHECKING(whether the Kerberos library is Heimdal or MIT)
1128 if test "x$ac_krb5_version" = "xHEIMDAL" -o "x$ac_krb5_version" = "xMIT"
1132 # Check whether we have krb5_kt_resolve - and whether
1133 # we need to link with -lresolv when linking with
1134 # the Kerberos library.
1136 AC_MSG_RESULT($ac_krb5_version)
1137 ethereal_save_LIBS="$LIBS"
1138 found_krb5_kt_resolve=no
1139 for extras in "" "-lresolv"
1141 LIBS="$KRB5_LIBS $extras"
1142 if test -z "$extras"
1144 AC_MSG_CHECKING([whether $ac_krb5_version includes krb5_kt_resolve])
1146 AC_MSG_CHECKING([whether $ac_krb5_version includes krb5_kt_resolve (linking with $extras)])
1156 # We found "krb5_kt_resolve()", and required
1157 # the libraries in extras as well.
1161 AC_DEFINE(HAVE_KERBEROS, 1, [Define to use kerberos])
1162 if test "x$ac_krb5_version" = "xHEIMDAL"
1164 AC_DEFINE(HAVE_HEIMDAL_KERBEROS, 1, [Define to use heimdal kerberos])
1165 elif test "x$ac_krb5_version" = "xMIT"
1167 AC_DEFINE(HAVE_MIT_KERBEROS, 1, [Define to use MIT kerberos])
1169 found_krb5_kt_resolve=yes
1176 if test "$found_krb5_kt_resolve" = no
1179 # We didn't find "krb5_kt_resolve()" in the
1180 # Kerberos library, even when we tried linking
1181 # with -lresolv; we can't link with kerberos.
1183 if test "x$want_krb5" = "xyes"
1186 # The user tried to force us to use the library,
1187 # but we can't do so; report an error.
1189 AC_MSG_ERROR(Usable $ac_krb5_version not found)
1192 # Restore the versions of CFLAGS and CPPFLAGS
1193 # from before we added the flags for Kerberos.
1195 AC_MSG_RESULT(Usable $ac_krb5_version not found - disabling dissection for some kerberos data in packet decoding)
1196 CFLAGS="$ethereal_save_CFLAGS"
1197 CPPFLAGS="$ethereal_save_CPPFLAGS"
1203 # We can link with Kerberos; see whether krb5.h
1204 # defines KEYTYPE_ARCFOUR_56 (where "defines" means
1205 # "as a #define or as an enum member).
1207 AC_MSG_CHECKING([whether krb5.h defines KEYTYPE_ARCFOUR_56])
1217 printf("%u\n", KEYTYPE_ARCFOUR_56);
1223 AC_DEFINE(HAVE_KEYTYPE_ARCFOUR_56, 1, [Define if krb5.h defines KEYTYPE_ARCFOUR_56])
1229 LIBS="$ethereal_save_LIBS"
1232 # It's not Heimdal or MIT.
1235 if test "x$want_krb5" = "xyes"
1238 # The user tried to force us to use the library,
1239 # but we can't do so; report an error.
1241 AC_MSG_ERROR(Kerberos not found)
1244 # Restore the versions of CFLAGS and CPPFLAGS
1245 # from before we added the flags for Kerberos.
1247 AC_MSG_RESULT(Kerberos not found - disabling dissection for some kerberos data in packet decoding)
1248 CFLAGS="$ethereal_save_CFLAGS"
1249 CPPFLAGS="$ethereal_save_CPPFLAGS"
1256 # The user asked us not to use Kerberos, or they didn't
1257 # say whether they wanted us to use it but we found
1260 # Restore the versions of CFLAGS and CPPFLAGS
1261 # from before we added the flags for Kerberos.
1263 CFLAGS="$ethereal_save_CFLAGS"
1264 CPPFLAGS="$ethereal_save_CPPFLAGS"