1dnl @(#) $Header: /tcpdump/master/tcpdump/configure.in,v 1.204 2008-11-18 07:39:20 guy Exp $ (LBL)
2dnl
3dnl Copyright (c) 1994, 1995, 1996, 1997
4dnl	The Regents of the University of California.  All rights reserved.
5dnl
6dnl Process this file with autoconf to produce a configure script.
7dnl
8
9#
10# See
11#
12#	http://ftp.gnu.org/gnu/config/README
13#
14# for the URLs to use to fetch new versions of config.guess and
15# config.sub.
16#
17
18AC_REVISION($Revision: 1.204 $)
19AC_PREREQ(2.50)
20AC_INIT(tcpdump.c)
21
22AC_CANONICAL_HOST
23
24AC_LBL_C_INIT_BEFORE_CC(V_CCOPT, V_INCLS)
25AC_PROG_CC
26AC_LBL_C_INIT(V_CCOPT, V_INCLS)
27AC_LBL_C_INLINE
28AC_C___ATTRIBUTE__
29if test "$ac_cv___attribute__" = "yes"; then
30	AC_C___ATTRIBUTE___FORMAT_FUNCTION_POINTER
31fi
32AC_CHECK_HEADERS(fcntl.h rpc/rpc.h rpc/rpcent.h netdnet/dnetdb.h)
33AC_CHECK_HEADERS(net/pfvar.h, , , [#include <sys/types.h>
34#include <sys/socket.h>
35#include <net/if.h>])
36if test "$ac_cv_header_net_pfvar_h" = yes; then
37	LOCALSRC="print-pflog.c $LOCALSRC"
38fi
39AC_CHECK_HEADERS(netinet/if_ether.h, , , [#include <sys/types.h>
40#include <sys/socket.h>])
41if test "$ac_cv_header_netinet_if_ether_h" != yes; then
42	#
43	# The simple test didn't work.
44	# Do we need to include <net/if.h> first?
45	# Unset ac_cv_header_netinet_if_ether_h so we don't
46	# treat the previous failure as a cached value and
47	# suppress the next test.
48	#
49	AC_MSG_NOTICE([Rechecking with some additional includes])
50	unset ac_cv_header_netinet_if_ether_h
51	AC_CHECK_HEADERS(netinet/if_ether.h, , , [#include <sys/types.h>
52#include <sys/socket.h>
53#include <netinet/in.h>
54struct mbuf;
55struct rtentry;
56#include <net/if.h>])
57fi
58
59AC_HEADER_TIME
60
61case "$host_os" in
62
63darwin*)
64	AC_ARG_ENABLE(universal,
65	AC_HELP_STRING([--disable-universal],[don't build universal on OS X]))
66	if test "$enable_universal" != "no"; then
67		case "$host_os" in
68
69		darwin9.*)
70			#
71			# Leopard.  Build for x86 and 32-bit PowerPC, with
72			# x86 first.  (That's what Apple does.)
73			#
74			V_CCOPT="$V_CCOPT -arch i386 -arch ppc"
75			LDFLAGS="$LDFLAGS -arch i386 -arch ppc"
76			;;
77
78		darwin10.*)
79			#
80			# Snow Leopard.  Build for x86-64 and x86, with
81			# x86-64 first.  (That's what Apple does.)
82			#
83			V_CCOPT="$V_CCOPT -arch x86_64 -arch i386"
84			LDFLAGS="$LDFLAGS -arch x86_64 -arch i386"
85			;;
86		esac
87	fi
88	;;
89
90linux*)
91	AC_MSG_CHECKING(Linux kernel version)
92 	if test "$cross_compiling" = yes; then
93 		AC_CACHE_VAL(ac_cv_linux_vers,
94 		    ac_cv_linux_vers=unknown)
95 	else
96 		AC_CACHE_VAL(ac_cv_linux_vers,
97 		    ac_cv_linux_vers=`uname -r 2>&1 | \
98 			sed -n -e '$s/.* //' -e '$s/\..*//p'`)
99 	fi
100	AC_MSG_RESULT($ac_cv_linux_vers)
101 	if test $ac_cv_linux_vers = unknown ; then
102 		AC_MSG_ERROR(cannot determine linux version when cross-compiling)
103 	fi
104	if test $ac_cv_linux_vers -lt 2 ; then
105		AC_MSG_ERROR(version 2 or higher required; see the INSTALL doc for more info)
106	fi
107	;;
108
109*)
110	;;
111esac
112
113
114AC_ARG_WITH(smi,
115[  --with-smi              link with libsmi (allows to load MIBs on the fly to decode SNMP packets. [default=yes]
116  --without-smi           don't link with libsmi],,
117   with_smi=yes)
118
119if test "x$with_smi" != "xno" ; then
120AC_CHECK_HEADERS(smi.h)
121AC_CHECK_LIB(smi, smiInit)
122if test "$ac_cv_header_smi_h" = yes -a "$ac_cv_lib_smi_smiInit" = yes
123then
124AC_MSG_CHECKING([whether to enable libsmi])
125        AC_TRY_RUN([ /* libsmi available check */
126#include <smi.h>
127main()
128{
129  int current, revision, age, n;
130  const int required = 2;
131  if (smiInit("")) 
132    exit(1);
133  if (strcmp(SMI_LIBRARY_VERSION, smi_library_version))
134    exit(2);
135  n = sscanf(smi_library_version, "%d:%d:%d", &current, &revision, &age);
136  if (n != 3)
137    exit(3);
138  if (required < current - age || required > current)
139    exit(4);
140  exit(0);
141}
142],
143[ AC_MSG_RESULT(yes)
144  AC_DEFINE(LIBSMI)
145  libsmi=yes],
146dnl autoconf documentation says that $? contains the exit value.
147dnl reality is that it does not.  We leave this in just in case
148dnl autoconf ever comes back to match the documentation.
149[ case $? in
150  1) AC_MSG_RESULT(no - smiInit failed) ;;
151  2) AC_MSG_RESULT(no - header/library version mismatch) ;;
152  3) AC_MSG_RESULT(no - can't determine library version) ;;
153  4) AC_MSG_RESULT(no - too old) ;;
154  *) AC_MSG_RESULT(no) ;;
155  esac
156  libsmi=no],
157[ AC_MSG_RESULT(not when cross-compiling)
158  libsmi=no]
159)
160fi
161fi
162
163AC_MSG_CHECKING([whether to enable the possibly-buggy SMB printer])
164AC_ARG_ENABLE(smb,
165[  --enable-smb            enable possibly-buggy SMB printer [default=yes]
166  --disable-smb           disable possibly-buggy SMB printer],,
167   enableval=yes)
168case "$enableval" in
169yes)	AC_MSG_RESULT(yes)
170	AC_WARN([The SMB printer may have exploitable buffer overflows!!!])
171	AC_DEFINE(TCPDUMP_DO_SMB)
172	LOCALSRC="print-smb.c smbutil.c $LOCALSRC"
173	;;
174*)	AC_MSG_RESULT(no)
175	;;
176esac
177
178AC_ARG_WITH(user, [  --with-user=USERNAME    drop privileges by default to USERNAME])
179AC_MSG_CHECKING([whether to drop root privileges by default])
180if test ! -z "$with_user" ; then
181        AC_DEFINE_UNQUOTED(WITH_USER, "$withval")
182       AC_MSG_RESULT(to \"$withval\")
183else
184       AC_MSG_RESULT(no)
185fi
186
187AC_ARG_WITH(chroot, [  --with-chroot=DIRECTORY when dropping privileges, chroot to DIRECTORY])
188AC_MSG_CHECKING([whether to chroot])
189if test ! -z "$with_chroot" && test "$with_chroot" != "no" ; then
190        AC_DEFINE_UNQUOTED(WITH_CHROOT, "$withval")
191       AC_MSG_RESULT(to \"$withval\")
192else
193       AC_MSG_RESULT(no)
194fi
195
196AC_MSG_CHECKING([whether to enable ipv6])
197AC_ARG_ENABLE(ipv6,
198[  --enable-ipv6           enable ipv6 (with ipv4) support
199  --disable-ipv6          disable ipv6 support],
200[ case "$enableval" in
201yes)   AC_MSG_RESULT(yes)
202       LOCALSRC="print-ip6.c print-ip6opts.c print-mobility.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c print-babel.c $LOCALSRC"
203       AC_DEFINE(INET6)
204       ipv6=yes
205       ;;
206*)
207       AC_MSG_RESULT(no)
208       ipv6=no
209       ;;
210  esac ],
211
212  AC_TRY_RUN([ /* AF_INET6 available check */
213#include <sys/types.h>
214#include <sys/socket.h>
215main()
216{
217 if (socket(AF_INET6, SOCK_STREAM, 0) < 0)
218   exit(1);
219 else
220   exit(0);
221}
222],
223[ AC_MSG_RESULT(yes)
224  LOCALSRC="print-ip6.c print-ip6opts.c print-mobility.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c print-babel.c $LOCALSRC"
225  AC_DEFINE(INET6)
226  ipv6=yes],
227[ AC_MSG_RESULT(no)
228  ipv6=no],
229[ AC_MSG_RESULT(no)
230  ipv6=no]
231))
232
233ipv6type=unknown
234ipv6lib=none
235ipv6trylibc=no
236
237if test "$ipv6" = "yes"; then
238	AC_MSG_CHECKING([ipv6 stack type])
239	for i in inria kame linux-glibc linux-libinet6 toshiba v6d zeta; do
240		case $i in
241		inria)
242			dnl http://www.kame.net/
243			AC_EGREP_CPP(yes,
244[#include <netinet/in.h>
245#ifdef IPV6_INRIA_VERSION
246yes
247#endif],
248				[ipv6type=$i;
249				CFLAGS="-DINET6 $CFLAGS"])
250			;;
251		kame)
252			dnl http://www.kame.net/
253			AC_EGREP_CPP(yes,
254[#include <netinet/in.h>
255#ifdef __KAME__
256yes
257#endif],
258				[ipv6type=$i;
259				ipv6lib=inet6;
260				ipv6libdir=/usr/local/v6/lib;
261				ipv6trylibc=yes;
262				CFLAGS="-DINET6 $CFLAGS"])
263			;;
264		linux-glibc)
265			dnl http://www.v6.linux.or.jp/
266			AC_EGREP_CPP(yes,
267[#include <features.h>
268#if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
269yes
270#endif],
271				[ipv6type=$i;
272				CFLAGS="-DINET6 $CFLAGS"])
273			;;
274		linux-libinet6)
275			dnl http://www.v6.linux.or.jp/
276			dnl
277			dnl This also matches Solaris 8 and Tru64 UNIX 5.1,
278			dnl and possibly other versions of those OSes
279			dnl
280			if test -d /usr/inet6 -o -f /usr/include/netinet/ip6.h; then
281				ipv6type=$i
282				ipv6lib=inet6
283				ipv6libdir=/usr/inet6/lib
284				ipv6trylibc=yes;
285				CFLAGS="-DINET6 -I/usr/inet6/include $CFLAGS"
286			fi
287			;;
288		toshiba)
289			AC_EGREP_CPP(yes,
290[#include <sys/param.h>
291#ifdef _TOSHIBA_INET6
292yes
293#endif],
294				[ipv6type=$i;
295				ipv6lib=inet6;
296				ipv6libdir=/usr/local/v6/lib;
297				CFLAGS="-DINET6 $CFLAGS"])
298			;;
299		v6d)
300			AC_EGREP_CPP(yes,
301[#include </usr/local/v6/include/sys/v6config.h>
302#ifdef __V6D__
303yes
304#endif],
305				[ipv6type=$i;
306				ipv6lib=v6;
307				ipv6libdir=/usr/local/v6/lib;
308				CFLAGS="-I/usr/local/v6/include $CFLAGS"])
309			;;
310		zeta)
311			AC_EGREP_CPP(yes,
312[#include <sys/param.h>
313#ifdef _ZETA_MINAMI_INET6
314yes
315#endif],
316				[ipv6type=$i;
317				ipv6lib=inet6;
318				ipv6libdir=/usr/local/v6/lib;
319				CFLAGS="-DINET6 $CFLAGS"])
320			;;
321		esac
322		if test "$ipv6type" != "unknown"; then
323			break
324		fi
325	done
326	AC_MSG_RESULT($ipv6type)
327fi
328
329if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then
330	if test -d $ipv6libdir -a -f $ipv6libdir/lib$ipv6lib.a; then
331		LIBS="-L$ipv6libdir -l$ipv6lib $LIBS"
332		echo "You have $ipv6lib library, using it"
333	else
334		if test "$ipv6trylibc" = "yes"; then
335			echo "You do not have $ipv6lib library, using libc"
336		else
337			echo 'Fatal: no $ipv6lib library found.  cannot continue.'
338			echo "You need to fetch lib$ipv6lib.a from appropriate"
339			echo 'ipv6 kit and compile beforehand.'
340			exit 1
341		fi
342	fi
343fi
344
345
346if test "$ipv6" = "yes"; then
347	#
348	# XXX - on Tru64 UNIX 5.1, there is no "getaddrinfo()"
349	# function in libc; there are "ngetaddrinfo()" and
350	# "ogetaddrinfo()" functions, and <netdb.h> #defines
351	# "getaddrinfo" to be either "ngetaddrinfo" or
352	# "ogetaddrinfo", depending on whether _SOCKADDR_LEN
353	# or _XOPEN_SOURCE_EXTENDED are defined or not.
354	#
355	# So this test doesn't work on Tru64 5.1, and possibly
356	# on other 5.x releases.  This causes the configure
357	# script to become confused, and results in libpcap
358	# being unbuildable.
359	#
360	AC_SEARCH_LIBS(getaddrinfo, socket, [dnl
361	AC_MSG_CHECKING(getaddrinfo bug)
362	AC_CACHE_VAL(td_cv_buggygetaddrinfo, [AC_TRY_RUN([
363#include <sys/types.h>
364#include <netdb.h>
365#include <string.h>
366#include <sys/socket.h>
367#include <netinet/in.h>
368
369main()
370{
371  int passive, gaierr, inet4 = 0, inet6 = 0;
372  struct addrinfo hints, *ai, *aitop;
373  char straddr[INET6_ADDRSTRLEN], strport[16];
374
375  for (passive = 0; passive <= 1; passive++) {
376    memset(&hints, 0, sizeof(hints));
377    hints.ai_family = AF_UNSPEC;
378    hints.ai_flags = passive ? AI_PASSIVE : 0;
379    hints.ai_socktype = SOCK_STREAM;
380    hints.ai_protocol = IPPROTO_TCP;
381    if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) {
382      (void)gai_strerror(gaierr);
383      goto bad;
384    }
385    for (ai = aitop; ai; ai = ai->ai_next) {
386      if (ai->ai_addr == NULL ||
387          ai->ai_addrlen == 0 ||
388          getnameinfo(ai->ai_addr, ai->ai_addrlen,
389                      straddr, sizeof(straddr), strport, sizeof(strport),
390                      NI_NUMERICHOST|NI_NUMERICSERV) != 0) {
391        goto bad;
392      }
393      switch (ai->ai_family) {
394      case AF_INET:
395        if (strcmp(strport, "54321") != 0) {
396          goto bad;
397        }
398        if (passive) {
399          if (strcmp(straddr, "0.0.0.0") != 0) {
400            goto bad;
401          }
402        } else {
403          if (strcmp(straddr, "127.0.0.1") != 0) {
404            goto bad;
405          }
406        }
407        inet4++;
408        break;
409      case AF_INET6:
410        if (strcmp(strport, "54321") != 0) {
411          goto bad;
412        }
413        if (passive) {
414          if (strcmp(straddr, "::") != 0) {
415            goto bad;
416          }
417        } else {
418          if (strcmp(straddr, "::1") != 0) {
419            goto bad;
420          }
421        }
422        inet6++;
423        break;
424      case AF_UNSPEC:
425        goto bad;
426        break;
427#ifdef AF_UNIX
428      case AF_UNIX:
429#else
430#ifdef AF_LOCAL
431      case AF_LOCAL:
432#endif
433#endif
434      default:
435        /* another family support? */
436        break;
437      }
438    }
439  }
440
441  /* supported family should be 2, unsupported family should be 0 */
442  if (!(inet4 == 0 || inet4 == 2))
443    goto bad;
444  if (!(inet6 == 0 || inet6 == 2))
445    goto bad;
446
447  if (aitop)
448    freeaddrinfo(aitop);
449  exit(0);
450
451 bad:
452  if (aitop)
453    freeaddrinfo(aitop);
454  exit(1);
455}
456],
457	td_cv_buggygetaddrinfo=no,
458	td_cv_buggygetaddrinfo=yes,
459	td_cv_buggygetaddrinfo=yes)])
460	if test "$td_cv_buggygetaddrinfo" = no; then
461		AC_MSG_RESULT(good)
462	else
463		AC_MSG_RESULT(buggy)
464	fi
465
466	if test "$td_cv_buggygetaddrinfo" = "yes"; then
467		#
468		# XXX - it doesn't appear that "ipv6type" can ever be
469		# set to "linux".  Should this be testing for
470		# "linux-glibc", or for that *or* "linux-libinet6"?
471		# If the latter, note that "linux-libinet6" is also
472		# the type given to some non-Linux OSes.
473		#
474		if test "$ipv6type" != "linux"; then
475			echo 'Fatal: You must get working getaddrinfo() function.'
476			echo '       or you can specify "--disable-ipv6"'.
477			exit 1
478		else
479			echo 'Warning: getaddrinfo() implementation on your system seems be buggy.'
480			echo '         Better upgrade your system library to newest version'
481			echo '         of GNU C library (aka glibc).'
482		fi
483	fi
484	])
485	AC_REPLACE_FUNCS(getnameinfo)
486fi
487
488AC_CACHE_CHECK([for dnet_htoa declaration in netdnet/dnetdb.h],
489[td_cv_decl_netdnet_dnetdb_h_dnet_htoa],
490[AC_EGREP_HEADER(dnet_htoa, netdnet/dnetdb.h,
491	td_cv_decl_netdnet_dnetdb_h_dnet_htoa=yes,
492	td_cv_decl_netdnet_dnetdb_h_dnet_htoa=no)])
493if test "$td_cv_decl_netdnet_dnetdb_h_dnet_htoa" = yes; then
494	AC_DEFINE(HAVE_NETDNET_DNETDB_H_DNET_HTOA)
495fi
496
497dnl
498dnl Checks for addrinfo structure
499AC_STRUCT_ADDRINFO(ac_cv_addrinfo)
500if test "$ac_cv_addrinfo" = no; then
501	missing_includes=yes
502fi
503
504dnl
505dnl Checks for NI_MAXSERV
506AC_NI_MAXSERV(ac_cv_maxserv)
507if test "$ac_cv_maxserv" = no; then
508	missing_includes=yes
509fi
510
511dnl
512dnl Checks for NI_NAMEREQD
513AC_NI_NAMEREQD(ac_cv_namereqd)
514if test "$ac_cv_namereqd" = no; then
515	missing_includes=yes
516fi
517
518dnl
519dnl Checks for sockaddr_storage structure
520AC_STRUCT_SA_STORAGE(ac_cv_sa_storage)
521if test "$ac_cv_sa_storage" = no; then
522	missing_includes=yes
523fi
524
525AC_REPLACE_FUNCS(vfprintf strcasecmp strlcat strlcpy strdup strsep)
526AC_CHECK_FUNCS(fork vfork strftime)
527AC_CHECK_FUNCS(setlinebuf alarm)
528
529needsnprintf=no
530AC_CHECK_FUNCS(vsnprintf snprintf,,
531	[needsnprintf=yes])
532if test $needsnprintf = yes; then
533	AC_LIBOBJ(snprintf)
534fi
535
536AC_LBL_TYPE_SIGNAL
537
538AC_SEARCH_LIBS(dnet_htoa, dnet, AC_DEFINE(HAVE_DNET_HTOA))
539
540AC_CHECK_LIB(rpc, main)		dnl It's unclear why we might need -lrpc
541
542dnl Some platforms may need -lnsl for getrpcbynumber.
543AC_SEARCH_LIBS(getrpcbynumber, nsl, AC_DEFINE(HAVE_GETRPCBYNUMBER))
544
545dnl AC_CHECK_LIB(z, uncompress)
546dnl AC_CHECK_HEADERS(zlib.h)
547
548AC_LBL_LIBPCAP(V_PCAPDEP, V_INCLS)
549
550#
551# Check for these after AC_LBL_LIBPCAP, so we link with the appropriate
552# libraries (e.g., "-lsocket -lnsl" on Solaris).
553#
554# We don't use AC_REPLACE_FUNCS because that uses AC_CHECK_FUNCS which
555# use AC_CHECK_FUNC which doesn't let us specify the right #includes
556# to make this work on BSD/OS 4.x.  BSD/OS 4.x ships with the BIND8
557# resolver, and the way it defines inet_{ntop,pton} is rather strange;
558# it does not ship with a libc symbol "inet_ntop()", it ships with
559# "_inet_ntop()", and has a #define macro in one of the system headers
560# to rename it.
561#
562dnl AC_TRY_COMPILE(inet_ntop inet_pton inet_aton)
563AC_MSG_CHECKING(for inet_ntop)
564AC_TRY_LINK([#include <sys/types.h>
565#include <sys/socket.h>
566#include <netinet/in.h>
567#include <arpa/inet.h>], [char src[4], dst[128];
568inet_ntop(AF_INET, src, dst, sizeof(dst));],
569	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
570	AC_LIBOBJ(inet_ntop)])
571AC_MSG_CHECKING(for inet_pton)
572AC_TRY_LINK([#include <sys/types.h>
573#include <sys/socket.h>
574#include <netinet/in.h>
575#include <arpa/inet.h>], [char src[128], dst[4];
576inet_pton(AF_INET, src, dst);],
577	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
578	AC_LIBOBJ(inet_pton)])
579AC_MSG_CHECKING(for inet_aton)
580AC_TRY_LINK([#include <sys/types.h>
581#include <netinet/in.h>
582#include <arpa/inet.h>], [char src[128];
583struct in_addr dst;
584inet_aton(src, &dst);],
585	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
586	AC_LIBOBJ(inet_aton)])
587
588#
589# Check for these after AC_LBL_LIBPCAP, for the same reason.
590#
591# You are in a twisty little maze of UN*Xes, all different.
592# Some might not have ether_ntohost().
593# Some might have it, but not declare it in any header file.
594# Some might have it, but declare it in <netinet/if_ether.h>.
595# Some might have it, but declare it in <netinet/ether.h>
596# (And some might have it but document it as something declared in
597# <netinet/ethernet.h>, although <netinet/if_ether.h> appears to work.)
598#
599# Before you is a C compiler.
600#
601AC_CHECK_FUNCS(ether_ntohost, [
602    AC_CACHE_CHECK(for buggy ether_ntohost, ac_cv_buggy_ether_ntohost, [
603	AC_TRY_RUN([
604		#include <netdb.h>
605		#include <sys/types.h>
606		#include <sys/param.h>
607		#include <sys/socket.h>
608
609		int
610		main(int argc, char **argv)
611		{
612			u_char ea[6] = { 0xff, 0xff, 0xff, 0xff, 0xff };
613			char name[MAXHOSTNAMELEN];
614
615			ether_ntohost(name, (struct ether_addr *)ea);
616			exit(0);
617		}
618	], [ac_cv_buggy_ether_ntohost=no],
619	   [ac_cv_buggy_ether_ntohost=yes],
620	   [ac_cv_buggy_ether_ntohost="not while cross-compiling"])])
621    if test "$ac_cv_buggy_ether_ntohost" = "no"; then
622	AC_DEFINE(USE_ETHER_NTOHOST)
623    fi
624])
625if test "$ac_cv_func_ether_ntohost" = yes -a \
626    "$ac_cv_buggy_ether_ntohost" = "no"; then
627	#
628	# OK, we have ether_ntohost().  Do we have <netinet/if_ether.h>?
629	#
630	if test "$ac_cv_header_netinet_if_ether_h" = yes; then
631		#
632		# Yes.  Does it declare ether_ntohost()?
633		#
634		AC_CHECK_DECL(ether_ntohost,
635		    [
636			AC_DEFINE(NETINET_IF_ETHER_H_DECLARES_ETHER_NTOHOST,,
637			    [Define to 1 if netinet/if_ether.h declares `ether_ntohost'])
638		    ],,
639		    [
640#include <sys/types.h>
641#include <sys/socket.h>
642#include <netinet/in.h>
643#include <arpa/inet.h>
644struct mbuf;
645struct rtentry;
646#include <net/if.h>
647#include <netinet/if_ether.h>
648		    ])
649	fi
650	#
651	# Did that succeed?
652	#
653	if test "$ac_cv_have_decl_ether_ntohost" != yes; then
654		#
655		# No, how about <netinet/ether.h>, as on Linux?
656		#
657		AC_CHECK_HEADERS(netinet/ether.h)
658		if test "$ac_cv_header_netinet_ether_h" = yes; then
659			#
660			# We have it - does it declare ether_ntohost()?
661			# Unset ac_cv_have_decl_ether_ntohost so we don't
662			# treat the previous failure as a cached value and
663			# suppress the next test.
664			#
665			unset ac_cv_have_decl_ether_ntohost
666			AC_CHECK_DECL(ether_ntohost,
667			    [
668				AC_DEFINE(NETINET_ETHER_H_DECLARES_ETHER_NTOHOST,,
669				    [Define to 1 if netinet/ether.h declares `ether_ntohost'])
670			    ],,
671			    [
672#include <netinet/ether.h>
673			    ])
674		fi
675	fi
676	#
677	# Is ether_ntohost() declared?
678	#
679	if test "$ac_cv_have_decl_ether_ntohost" != yes; then
680		#
681		# No, we'll have to declare it ourselves.
682		# Do we have "struct ether_addr"?
683		#
684		AC_CHECK_TYPES(struct ether_addr,,,
685		    [
686#include <sys/types.h>
687#include <sys/socket.h>
688#include <netinet/in.h>
689#include <arpa/inet.h>
690struct mbuf;
691struct rtentry;
692#include <net/if.h>
693#include <netinet/if_ether.h>
694		    ])
695		AC_DEFINE(HAVE_DECL_ETHER_NTOHOST, 0,
696		    [Define to 1 if you have the declaration of `ether_ntohost', and to 0 if you
697don't.])
698	else
699		AC_DEFINE(HAVE_DECL_ETHER_NTOHOST, 1,
700		    [Define to 1 if you have the declaration of `ether_ntohost', and to 0 if you
701don't.])
702	fi
703fi
704
705# libdlpi is needed for Solaris 11 and later.
706AC_CHECK_LIB(dlpi, dlpi_walk, LIBS="$LIBS -ldlpi" LDFLAGS="-L/lib $LDFLAGS", ,-L/lib)
707
708dnl portability macros for getaddrinfo/getnameinfo
709dnl
710dnl Check for sa_len
711AC_CHECK_SA_LEN(ac_cv_sockaddr_has_sa_len)
712if test "$ac_cv_sockaddr_has_sa_len" = no; then
713	missing_includes=yes
714fi
715
716#
717# Do we have the new open API?  Check for pcap_create, and assume that,
718# if we do, we also have pcap_activate() and the other new routines
719# introduced in libpcap 1.0.0.
720#
721AC_CHECK_FUNCS(pcap_create)
722if test $ac_cv_func_pcap_create = "yes" ; then
723	#
724	# OK, do we have pcap_set_tstamp_type?  If so, assume we have
725	# pcap_list_tstamp_types and pcap_free_tstamp_types as well.
726	#
727	AC_CHECK_FUNCS(pcap_set_tstamp_type)
728fi
729
730AC_CHECK_FUNCS(pcap_findalldevs pcap_dump_flush pcap_lib_version)
731if test $ac_cv_func_pcap_findalldevs = "yes" ; then
732dnl Check for Mac OS X, which may ship pcap.h from 0.6 but libpcap may
733dnl be 0.8; this means that lib has pcap_findalldevs but header doesn't
734dnl have pcap_if_t.
735    savedcppflags="$CPPFLAGS"
736    CPPFLAGS="$CPPFLAGS $V_INCLS"
737    AC_CHECK_TYPES(pcap_if_t, , , [#include <pcap.h>])
738    CPPFLAGS="$savedcppflags"
739fi
740
741if test $ac_cv_func_pcap_lib_version = "no" ; then
742    AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
743    AC_TRY_LINK([],
744       [
745	extern char pcap_version[];
746
747	return (int)pcap_version;
748       ],
749       ac_lbl_cv_pcap_version_defined=yes,
750       ac_lbl_cv_pcap_version_defined=no)
751    if test "$ac_lbl_cv_pcap_version_defined" = yes ; then
752    	AC_MSG_RESULT(yes)
753	AC_DEFINE(HAVE_PCAP_VERSION)
754    else
755	AC_MSG_RESULT(no)
756    fi
757fi
758AC_MSG_CHECKING(whether pcap_debug is defined by libpcap)
759AC_TRY_LINK([],
760   [
761	extern int pcap_debug;
762
763	return pcap_debug;
764   ],
765   ac_lbl_cv_pcap_debug_defined=yes,
766   ac_lbl_cv_pcap_debug_defined=no)
767if test "$ac_lbl_cv_pcap_debug_defined" = yes ; then
768	AC_MSG_RESULT(yes)
769	AC_DEFINE(HAVE_PCAP_DEBUG)
770else
771	AC_MSG_RESULT(no)
772	#
773	# OK, what about "yydebug"?
774	#
775	AC_MSG_CHECKING(whether yydebug is defined by libpcap)
776	AC_TRY_LINK([],
777	   [
778		extern int yydebug;
779
780		return yydebug;
781	   ],
782	   ac_lbl_cv_yydebug_defined=yes,
783	   ac_lbl_cv_yydebug_defined=no)
784	if test "$ac_lbl_cv_yydebug_defined" = yes ; then
785		AC_MSG_RESULT(yes)
786		AC_DEFINE(HAVE_YYDEBUG)
787	else
788		AC_MSG_RESULT(no)
789	fi
790fi
791AC_REPLACE_FUNCS(bpf_dump)	dnl moved to libpcap in 0.6
792
793V_GROUP=0
794if test -f /etc/group -a ! -z "`grep '^wheel:' /etc/group`" ; then
795	V_GROUP=wheel
796fi
797#
798# Assume V7/BSD convention for man pages (file formats in section 5,
799# miscellaneous info in section 7).
800#
801MAN_FILE_FORMATS=5
802MAN_MISC_INFO=7
803case "$host_os" in
804
805aix*)
806	dnl Workaround to enable certain features
807	AC_DEFINE(_SUN,1,[define on AIX to get certain functions])
808	;;
809
810hpux*)
811	#
812	# Use System V conventions for man pages.
813	#
814	MAN_FILE_FORMATS=4
815	MAN_MISC_INFO=5
816	;;
817
818irix*)
819	V_GROUP=sys
820
821	#
822	# Use System V conventions for man pages.
823	#
824	MAN_FILE_FORMATS=4
825	MAN_MISC_INFO=5
826	;;
827
828osf*)
829	V_GROUP=system
830
831	#
832	# Use System V conventions for man pages.
833	#
834	MAN_FILE_FORMATS=4
835	MAN_MISC_INFO=5
836	;;
837
838solaris*)
839	V_GROUP=sys
840
841	#
842	# Use System V conventions for man pages.
843	#
844	MAN_FILE_FORMATS=4
845	MAN_MISC_INFO=5
846	;;
847esac
848
849if test -f /dev/bpf0 ; then
850	V_GROUP=bpf
851fi
852
853AC_CHECK_HEADERS(sys/bitypes.h)
854
855AC_CHECK_TYPE([int8_t], ,
856	[AC_DEFINE([int8_t], [signed char],
857	[Define to `signed char' if int8_t not defined.])],
858	[AC_INCLUDES_DEFAULT
859#ifdef HAVE_SYS_BITYPES_H
860#include <sys/bitypes.h>
861#endif])
862AC_CHECK_TYPE([u_int8_t], ,
863	[AC_DEFINE([u_int8_t], [unsigned char],
864	[Define to `unsigned char' if u_int8_t not defined.])],
865	[AC_INCLUDES_DEFAULT
866#ifdef HAVE_SYS_BITYPES_H
867#include <sys/bitypes.h>
868#endif])
869AC_CHECK_TYPE([int16_t], ,
870	[AC_DEFINE([int16_t], [short],
871	[Define to `short' if int16_t not defined.])]
872	[AC_INCLUDES_DEFAULT
873#ifdef HAVE_SYS_BITYPES_H
874#include <sys/bitypes.h>
875#endif])
876AC_CHECK_TYPE([u_int16_t], ,
877	[AC_DEFINE([u_int16_t], [unsigned short],
878	[Define to `unsigned short' if u_int16_t not defined.])],
879	[AC_INCLUDES_DEFAULT
880#ifdef HAVE_SYS_BITYPES_H
881#include <sys/bitypes.h>
882#endif])
883AC_CHECK_TYPE([int32_t], ,
884	[AC_DEFINE([int32_t], [int],
885	[Define to `int' if int32_t not defined.])],
886	[AC_INCLUDES_DEFAULT
887#ifdef HAVE_SYS_BITYPES_H
888#include <sys/bitypes.h>
889#endif])
890AC_CHECK_TYPE([u_int32_t], ,
891	[AC_DEFINE([u_int32_t], [unsigned int],
892	[Define to `unsigned int' if u_int32_t not defined.])],
893	[AC_INCLUDES_DEFAULT
894#ifdef HAVE_SYS_BITYPES_H
895#include <sys/bitypes.h>
896#endif])
897AC_CHECK_TYPE([int64_t], ,
898	[AC_DEFINE([int64_t], [long long],
899	[Define to `long long' if int64_t not defined.])],
900	[AC_INCLUDES_DEFAULT
901#ifdef HAVE_SYS_BITYPES_H
902#include <sys/bitypes.h>
903#endif])
904AC_CHECK_TYPE([u_int64_t], ,
905	[AC_DEFINE([u_int64_t], [unsigned long long],
906	[Define to `unsigned long long' if u_int64_t not defined.])],
907	[AC_INCLUDES_DEFAULT
908#ifdef HAVE_SYS_BITYPES_H
909#include <sys/bitypes.h>
910#endif])
911
912#
913# We can't just check for <inttypes.h> - some systems have one that
914# doesn't define all the PRI[doxu]64 macros.
915#
916AC_CHECK_HEADERS(inttypes.h,
917  [
918    #
919    # OK, we have inttypes.h, but does it define those macros?
920    #
921    AC_MSG_CHECKING([[whether inttypes.h defines the PRI[doxu]64 macros]])
922    AC_COMPILE_IFELSE(
923      [
924	AC_LANG_SOURCE(
925	  [[
926	    #include <inttypes.h>
927	    #include <stdio.h>
928	    #include <sys/types.h>
929	    #ifdef HAVE_SYS_BITYPES_H
930	    #include <sys/bitypes.h>
931	    #endif
932
933	    main()
934	    {
935	      printf("%" PRId64 "\n", (u_int64_t)1);
936	      printf("%" PRIo64 "\n", (u_int64_t)1);
937	      printf("%" PRIx64 "\n", (u_int64_t)1);
938	      printf("%" PRIu64 "\n", (u_int64_t)1);
939	    }
940	  ]])
941      ],
942      [
943	AC_MSG_RESULT(yes)
944	ac_lbl_inttypes_h_defines_formats=yes
945      ],
946      [
947	AC_MSG_RESULT(no)
948	ac_lbl_inttypes_h_defines_formats=no
949      ])
950  ],
951  [
952    #
953    # We don't have inttypes.h, so it obviously can't define those
954    # macros.
955    #
956    ac_lbl_inttypes_h_defines_formats=no
957  ])
958if test "$ac_lbl_inttypes_h_defines_formats" = no; then
959  AC_LBL_CHECK_64BIT_FORMAT(l,
960    [
961      AC_LBL_CHECK_64BIT_FORMAT(ll,
962        [
963          AC_LBL_CHECK_64BIT_FORMAT(L,
964	    [
965	      AC_LBL_CHECK_64BIT_FORMAT(q,
966	        [
967	          AC_MSG_ERROR([neither %llx nor %Lx nor %qx worked on a 64-bit integer])
968	        ])
969	    ])
970	])
971    ])
972fi
973
974#
975# Check for some headers introduced in later versions of libpcap
976# and used by some printers.
977#
978# Those headers use the {u_}intN_t types, so we must do this after
979# we check for what's needed to get them defined.
980#
981savedcppflags="$CPPFLAGS"
982CPPFLAGS="$CPPFLAGS $V_INCLS"
983AC_CHECK_HEADERS(pcap/bluetooth.h,,,[#include <tcpdump-stdinc.h>])
984AC_CHECK_HEADERS(pcap/usb.h,,,[#include <tcpdump-stdinc.h>])
985CPPFLAGS="$savedcppflags"
986
987AC_PROG_RANLIB
988
989AC_LBL_DEVEL(V_CCOPT)
990
991AC_LBL_SOCKADDR_SA_LEN
992
993AC_LBL_UNALIGNED_ACCESS
994
995AC_VAR_H_ERRNO
996
997# Check for SSLeay
998AC_MSG_CHECKING(whether to use SSLeay libcrypto)
999# Specify location for both includes and libraries.
1000want_libcrypto=youmama
1001AC_ARG_WITH(crypto,
1002    AS_HELP_STRING([--with-crypto@<:@=PATH@:>@],
1003		   [use SSLeay libcrypto (located in directory PATH, if supplied).  @<:@default=yes, if available@:>@]),
1004[
1005	if test $withval = no
1006	then
1007		want_libcrypto=no
1008		AC_MSG_RESULT(no)
1009	elif test $withval = yes
1010	then
1011		want_libcrypto=yes
1012		AC_MSG_RESULT(yes)
1013	else
1014		want_libcrypto=yes
1015		AC_MSG_RESULT(yes)
1016		crypto_dir=$withval
1017	fi
1018],[
1019	#
1020	# Use libcrypto if it's present, otherwise don't.
1021	#
1022	want_libcrypto=ifavailable
1023	AC_MSG_RESULT([yes, if available])
1024])
1025if test "$want_libcrypto" != "no"; then
1026	ac_cv_ssleay_path=no
1027	incdir=no
1028	if test "x$crypto_dir" = x; then
1029		#
1030		# Location not specified; check the default locations.
1031		#
1032		AC_MSG_CHECKING(where SSLeay is located)
1033		dirs="/usr /usr/local /usr/local/ssl /usr/pkg"
1034		if test "x${host_alias}" != x; then
1035			dirs="/usr/${host_alias} $dirs"
1036		fi
1037		for dir in $dirs; do
1038			AC_LBL_SSLEAY($dir)
1039
1040			if test "$ac_cv_ssleay_path" != "no" -a "$incdir" != "no"; then
1041				break;
1042			else
1043				ac_cv_ssleay_path=no
1044				incdir=no
1045			fi
1046		done
1047		if test "$ac_cv_ssleay_path" != no; then
1048			AC_MSG_RESULT($ac_cv_ssleay_path)
1049		fi
1050	else
1051		AC_MSG_CHECKING(for SSLeay in $crypto_dir)
1052		AC_LBL_SSLEAY($crypto_dir)
1053		if test "$ac_cv_ssleay_path" != no; then
1054			AC_MSG_RESULT(found)
1055		fi
1056	fi
1057	if test "$ac_cv_ssleay_path" != no; then
1058		V_INCLS="$V_INCLS $incdir"
1059		if test "$dir" != "/usr"; then
1060			LDFLAGS="-L$dir/lib $LDFLAGS"
1061		fi
1062		if test -f $ac_cv_ssleay_path/lib/libRSAglue.a; then
1063			LIBS="$LIBS -lRSAglue"
1064		fi
1065		if test -f $ac_cv_ssleay_path/lib/librsaref.a; then
1066			LIBS="$LIBS -lrsaref"
1067		fi
1068		AC_CHECK_LIB(crypto, DES_cbc_encrypt)
1069
1070		savedcppflags="$CPPFLAGS"
1071		CPPFLAGS="$CPPFLAGS $V_INCLS"
1072		AC_CHECK_HEADERS(openssl/evp.h)
1073		CPPFLAGS="$savedcppflags"
1074	else
1075		#
1076		# Not found.  Did the user explicitly ask for it?
1077		#
1078		AC_MSG_RESULT(not found)
1079		if test "$want_libcrypto" = yes; then
1080			AC_MSG_ERROR(SSLeay not found)
1081		fi
1082	fi
1083fi
1084
1085dnl
1086dnl set additional include path if necessary
1087if test "$missing_includes" = "yes"; then
1088	CPPFLAGS="$CPPFLAGS -I$srcdir/missing"
1089	V_INCLS="$V_INCLS -I$srcdir/missing"
1090fi
1091
1092AC_SUBST(V_CCOPT)
1093AC_SUBST(V_DEFS)
1094AC_SUBST(V_GROUP)
1095AC_SUBST(V_INCLS)
1096AC_SUBST(V_PCAPDEP)
1097AC_SUBST(LOCALSRC)
1098AC_SUBST(MAN_FILE_FORMATS)
1099AC_SUBST(MAN_MISC_INFO)
1100
1101AC_PROG_INSTALL
1102
1103AC_CONFIG_HEADER(config.h)
1104
1105AC_OUTPUT_COMMANDS([if test -f .devel; then
1106	echo timestamp > stamp-h
1107	cat Makefile-devel-adds >> Makefile
1108	make depend
1109fi])
1110AC_OUTPUT(Makefile tcpdump.1)
1111exit 0
1112