1dnl @(#) $Header: /tcpdump/master/tcpdump/configure.in,v 1.188.2.8 2007/09/12 19:48:50 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
9AC_REVISION($Revision: 1.188.2.8 $)
10AC_PREREQ(2.50)
11AC_INIT(tcpdump.c)
12
13AC_CANONICAL_HOST
14
15AC_LBL_C_INIT(V_CCOPT, V_INCLS)
16AC_LBL_C_INLINE
17AC_C___ATTRIBUTE__
18AC_CHECK_HEADERS(fcntl.h rpc/rpcent.h netdnet/dnetdb.h)
19AC_CHECK_HEADERS(net/pfvar.h, , , [#include <sys/types.h>
20#include <sys/socket.h>
21#include <net/if.h>])
22if test "$ac_cv_header_net_pfvar_h" == yes; then
23	LOCALSRC="print-pflog.c $LOCALSRC"
24fi
25AC_CHECK_HEADERS(netinet/if_ether.h, , , [#include <sys/types.h>
26#include <sys/socket.h>])
27if test "$ac_cv_header_netinet_if_ether_h" != yes; then
28	#
29	# The simple test didn't work.
30	# Do we need to include <net/if.h> first?
31	# Unset ac_cv_header_netinet_if_ether_h so we don't
32	# treat the previous failure as a cached value and
33	# suppress the next test.
34	#
35	AC_MSG_NOTICE([Rechecking with some additional includes])
36	unset ac_cv_header_netinet_if_ether_h
37	AC_CHECK_HEADERS(netinet/if_ether.h, , , [#include <sys/types.h>
38#include <sys/socket.h>
39#include <netinet/in.h>
40struct mbuf;
41struct rtentry;
42#include <net/if.h>])
43fi
44
45AC_HEADER_TIME
46
47case "$host_os" in
48
49linux*)
50	AC_MSG_CHECKING(Linux kernel version)
51 	if test "$cross_compiling" = yes; then
52 		AC_CACHE_VAL(ac_cv_linux_vers,
53 		    ac_cv_linux_vers=unknown)
54 	else
55 		AC_CACHE_VAL(ac_cv_linux_vers,
56 		    ac_cv_linux_vers=`uname -r 2>&1 | \
57 			sed -n -e '$s/.* //' -e '$s/\..*//p'`)
58 	fi
59	AC_MSG_RESULT($ac_cv_linux_vers)
60 	if test $ac_cv_linux_vers = unknown ; then
61 		AC_MSG_ERROR(cannot determine linux version when cross-compiling)
62 	fi
63	if test $ac_cv_linux_vers -lt 2 ; then
64		AC_MSG_ERROR(version 2 or higher required; see the INSTALL doc for more info)
65	fi
66	;;
67
68*)
69	;;
70esac
71
72
73AC_CHECK_HEADERS(smi.h)
74AC_CHECK_LIB(smi, smiInit)
75if test "$ac_cv_header_smi_h" = yes -a "$ac_cv_lib_smi_smiInit" = yes
76then
77AC_MSG_CHECKING([whether to enable libsmi])
78        AC_TRY_RUN([ /* libsmi available check */
79#include <smi.h>
80main()
81{
82  int current, revision, age, n;
83  const int required = 2;
84  if (smiInit("")) 
85    exit(1);
86  if (strcmp(SMI_LIBRARY_VERSION, smi_library_version))
87    exit(2);
88  n = sscanf(smi_library_version, "%d:%d:%d", &current, &revision, &age);
89  if (n != 3)
90    exit(3);
91  if (required < current - age || required > current)
92    exit(4);
93  exit(0);
94}
95],
96[ AC_MSG_RESULT(yes)
97  AC_DEFINE(LIBSMI)
98  libsmi=yes],
99dnl autoconf documentation says that $? contains the exit value.
100dnl reality is that it does not.  We leave this in just in case
101dnl autoconf ever comes back to match the documentation.
102[ case $? in
103  1) AC_MSG_RESULT(no - smiInit failed) ;;
104  2) AC_MSG_RESULT(no - header/library version mismatch) ;;
105  3) AC_MSG_RESULT(no - can't determine library version) ;;
106  4) AC_MSG_RESULT(no - too old) ;;
107  *) AC_MSG_RESULT(no) ;;
108  esac
109  libsmi=no],
110[ AC_MSG_RESULT(not when cross-compiling)
111  libsmi=no]
112)
113fi
114
115AC_MSG_CHECKING([whether to enable the possibly-buggy SMB printer])
116AC_ARG_ENABLE(smb,
117[  --enable-smb            enable possibly-buggy SMB printer [default=yes]
118  --disable-smb           disable possibly-buggy SMB printer],,
119   enableval=yes)
120case "$enableval" in
121yes)	AC_MSG_RESULT(yes)
122	AC_WARN([The SMB printer may have exploitable buffer overflows!!!])
123	AC_DEFINE(TCPDUMP_DO_SMB)
124	LOCALSRC="print-smb.c smbutil.c $LOCALSRC"
125	;;
126*)	AC_MSG_RESULT(no)
127	;;
128esac
129
130AC_ARG_WITH(user, [  --with-user=USERNAME    drop privileges by default to USERNAME])
131AC_MSG_CHECKING([whether to drop root privileges by default])
132if test ! -z "$with_user" ; then
133        AC_DEFINE_UNQUOTED(WITH_USER, "$withval")
134       AC_MSG_RESULT(to \"$withval\")
135else
136       AC_MSG_RESULT(no)
137fi
138
139AC_ARG_WITH(chroot, [  --with-chroot=DIRECTORY when dropping privileges, chroot to DIRECTORY])
140AC_MSG_CHECKING([whether to chroot])
141if test ! -z "$with_chroot" ; then
142        AC_DEFINE_UNQUOTED(WITH_CHROOT, "$withval")
143       AC_MSG_RESULT(to \"$withval\")
144else
145       AC_MSG_RESULT(no)
146fi
147
148AC_MSG_CHECKING([whether to enable ipv6])
149AC_ARG_ENABLE(ipv6,
150[  --enable-ipv6           enable ipv6 (with ipv4) support
151  --disable-ipv6          disable ipv6 support],
152[ case "$enableval" in
153yes)   AC_MSG_RESULT(yes)
154       LOCALSRC="print-ip6.c print-ip6opts.c print-mobility.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c $LOCALSRC"
155       AC_DEFINE(INET6)
156       ipv6=yes
157       ;;
158*)
159       AC_MSG_RESULT(no)
160       ipv6=no
161       ;;
162  esac ],
163
164  AC_TRY_RUN([ /* AF_INET6 available check */
165#include <sys/types.h>
166#include <sys/socket.h>
167main()
168{
169 if (socket(AF_INET6, SOCK_STREAM, 0) < 0)
170   exit(1);
171 else
172   exit(0);
173}
174],
175[ AC_MSG_RESULT(yes)
176  LOCALSRC="print-ip6.c print-ip6opts.c print-mobility.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c $LOCALSRC"
177  AC_DEFINE(INET6)
178  ipv6=yes],
179[ AC_MSG_RESULT(no)
180  ipv6=no],
181[ AC_MSG_RESULT(no)
182  ipv6=no]
183))
184
185ipv6type=unknown
186ipv6lib=none
187ipv6trylibc=no
188
189if test "$ipv6" = "yes"; then
190	AC_MSG_CHECKING([ipv6 stack type])
191	for i in inria kame linux-glibc linux-libinet6 toshiba v6d zeta; do
192		case $i in
193		inria)
194			dnl http://www.kame.net/
195			AC_EGREP_CPP(yes,
196[#include <netinet/in.h>
197#ifdef IPV6_INRIA_VERSION
198yes
199#endif],
200				[ipv6type=$i;
201				CFLAGS="-DINET6 $CFLAGS"])
202			;;
203		kame)
204			dnl http://www.kame.net/
205			AC_EGREP_CPP(yes,
206[#include <netinet/in.h>
207#ifdef __KAME__
208yes
209#endif],
210				[ipv6type=$i;
211				ipv6lib=inet6;
212				ipv6libdir=/usr/local/v6/lib;
213				ipv6trylibc=yes;
214				CFLAGS="-DINET6 $CFLAGS"])
215			;;
216		linux-glibc)
217			dnl http://www.v6.linux.or.jp/
218			AC_EGREP_CPP(yes,
219[#include <features.h>
220#if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
221yes
222#endif],
223				[ipv6type=$i;
224				CFLAGS="-DINET6 $CFLAGS"])
225			;;
226		linux-libinet6)
227			dnl http://www.v6.linux.or.jp/
228			dnl
229			dnl This also matches Solaris 8 and Tru64 UNIX 5.1,
230			dnl and possibly other versions of those OSes
231			dnl
232			if test -d /usr/inet6 -o -f /usr/include/netinet/ip6.h; then
233				ipv6type=$i
234				ipv6lib=inet6
235				ipv6libdir=/usr/inet6/lib
236				ipv6trylibc=yes;
237				CFLAGS="-DINET6 -I/usr/inet6/include $CFLAGS"
238			fi
239			;;
240		toshiba)
241			AC_EGREP_CPP(yes,
242[#include <sys/param.h>
243#ifdef _TOSHIBA_INET6
244yes
245#endif],
246				[ipv6type=$i;
247				ipv6lib=inet6;
248				ipv6libdir=/usr/local/v6/lib;
249				CFLAGS="-DINET6 $CFLAGS"])
250			;;
251		v6d)
252			AC_EGREP_CPP(yes,
253[#include </usr/local/v6/include/sys/v6config.h>
254#ifdef __V6D__
255yes
256#endif],
257				[ipv6type=$i;
258				ipv6lib=v6;
259				ipv6libdir=/usr/local/v6/lib;
260				CFLAGS="-I/usr/local/v6/include $CFLAGS"])
261			;;
262		zeta)
263			AC_EGREP_CPP(yes,
264[#include <sys/param.h>
265#ifdef _ZETA_MINAMI_INET6
266yes
267#endif],
268				[ipv6type=$i;
269				ipv6lib=inet6;
270				ipv6libdir=/usr/local/v6/lib;
271				CFLAGS="-DINET6 $CFLAGS"])
272			;;
273		esac
274		if test "$ipv6type" != "unknown"; then
275			break
276		fi
277	done
278	AC_MSG_RESULT($ipv6type)
279fi
280
281if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then
282	if test -d $ipv6libdir -a -f $ipv6libdir/lib$ipv6lib.a; then
283		LIBS="-L$ipv6libdir -l$ipv6lib $LIBS"
284		echo "You have $ipv6lib library, using it"
285	else
286		if test "$ipv6trylibc" = "yes"; then
287			echo "You do not have $ipv6lib library, using libc"
288		else
289			echo 'Fatal: no $ipv6lib library found.  cannot continue.'
290			echo "You need to fetch lib$ipv6lib.a from appropriate"
291			echo 'ipv6 kit and compile beforehand.'
292			exit 1
293		fi
294	fi
295fi
296
297
298if test "$ipv6" = "yes"; then
299	#
300	# XXX - on Tru64 UNIX 5.1, there is no "getaddrinfo()"
301	# function in libc; there are "ngetaddrinfo()" and
302	# "ogetaddrinfo()" functions, and <netdb.h> #defines
303	# "getaddrinfo" to be either "ngetaddrinfo" or
304	# "ogetaddrinfo", depending on whether _SOCKADDR_LEN
305	# or _XOPEN_SOURCE_EXTENDED are defined or not.
306	#
307	# So this test doesn't work on Tru64 5.1, and possibly
308	# on other 5.x releases.  This causes the configure
309	# script to become confused, and results in libpcap
310	# being unbuildable.
311	#
312	AC_SEARCH_LIBS(getaddrinfo, socket, [dnl
313	AC_MSG_CHECKING(getaddrinfo bug)
314	AC_CACHE_VAL(td_cv_buggygetaddrinfo, [AC_TRY_RUN([
315#include <sys/types.h>
316#include <netdb.h>
317#include <string.h>
318#include <sys/socket.h>
319#include <netinet/in.h>
320
321main()
322{
323  int passive, gaierr, inet4 = 0, inet6 = 0;
324  struct addrinfo hints, *ai, *aitop;
325  char straddr[INET6_ADDRSTRLEN], strport[16];
326
327  for (passive = 0; passive <= 1; passive++) {
328    memset(&hints, 0, sizeof(hints));
329    hints.ai_family = AF_UNSPEC;
330    hints.ai_flags = passive ? AI_PASSIVE : 0;
331    hints.ai_socktype = SOCK_STREAM;
332    hints.ai_protocol = IPPROTO_TCP;
333    if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) {
334      (void)gai_strerror(gaierr);
335      goto bad;
336    }
337    for (ai = aitop; ai; ai = ai->ai_next) {
338      if (ai->ai_addr == NULL ||
339          ai->ai_addrlen == 0 ||
340          getnameinfo(ai->ai_addr, ai->ai_addrlen,
341                      straddr, sizeof(straddr), strport, sizeof(strport),
342                      NI_NUMERICHOST|NI_NUMERICSERV) != 0) {
343        goto bad;
344      }
345      switch (ai->ai_family) {
346      case AF_INET:
347        if (strcmp(strport, "54321") != 0) {
348          goto bad;
349        }
350        if (passive) {
351          if (strcmp(straddr, "0.0.0.0") != 0) {
352            goto bad;
353          }
354        } else {
355          if (strcmp(straddr, "127.0.0.1") != 0) {
356            goto bad;
357          }
358        }
359        inet4++;
360        break;
361      case AF_INET6:
362        if (strcmp(strport, "54321") != 0) {
363          goto bad;
364        }
365        if (passive) {
366          if (strcmp(straddr, "::") != 0) {
367            goto bad;
368          }
369        } else {
370          if (strcmp(straddr, "::1") != 0) {
371            goto bad;
372          }
373        }
374        inet6++;
375        break;
376      case AF_UNSPEC:
377        goto bad;
378        break;
379#ifdef AF_UNIX
380      case AF_UNIX:
381#else
382#ifdef AF_LOCAL
383      case AF_LOCAL:
384#endif
385#endif
386      default:
387        /* another family support? */
388        break;
389      }
390    }
391  }
392
393  /* supported family should be 2, unsupported family should be 0 */
394  if (!(inet4 == 0 || inet4 == 2))
395    goto bad;
396  if (!(inet6 == 0 || inet6 == 2))
397    goto bad;
398
399  if (aitop)
400    freeaddrinfo(aitop);
401  exit(0);
402
403 bad:
404  if (aitop)
405    freeaddrinfo(aitop);
406  exit(1);
407}
408],
409	td_cv_buggygetaddrinfo=no,
410	td_cv_buggygetaddrinfo=yes,
411	td_cv_buggygetaddrinfo=yes)])
412	if test "$td_cv_buggygetaddrinfo" = no; then
413		AC_MSG_RESULT(good)
414	else
415		AC_MSG_RESULT(buggy)
416	fi
417
418	if test "$td_cv_buggygetaddrinfo" = "yes"; then
419		#
420		# XXX - it doesn't appear that "ipv6type" can ever be
421		# set to "linux".  Should this be testing for
422		# "linux-glibc", or for that *or* "linux-libinet6"?
423		# If the latter, note that "linux-libinet6" is also
424		# the type given to some non-Linux OSes.
425		#
426		if test "$ipv6type" != "linux"; then
427			echo 'Fatal: You must get working getaddrinfo() function.'
428			echo '       or you can specify "--disable-ipv6"'.
429			exit 1
430		else
431			echo 'Warning: getaddrinfo() implementation on your system seems be buggy.'
432			echo '         Better upgrade your system library to newest version'
433			echo '         of GNU C library (aka glibc).'
434		fi
435	fi
436	])
437	AC_REPLACE_FUNCS(getaddrinfo getnameinfo)
438fi
439
440AC_CACHE_CHECK([for dnet_htoa declaration in netdnet/dnetdb.h],
441[td_cv_decl_netdnet_dnetdb_h_dnet_htoa],
442[AC_EGREP_HEADER(dnet_htoa, netdnet/dnetdb.h,
443	td_cv_decl_netdnet_dnetdb_h_dnet_htoa=yes,
444	td_cv_decl_netdnet_dnetdb_h_dnet_htoa=no)])
445if test "$td_cv_decl_netdnet_dnetdb_h_dnet_htoa" = yes; then
446	AC_DEFINE(HAVE_NETDNET_DNETDB_H_DNET_HTOA)
447fi
448
449dnl
450dnl check sizeof basic types.
451dnl They're very likely to be wrong for cross-compiling.
452AC_CHECK_SIZEOF(char, 1)
453AC_CHECK_SIZEOF(short, 2)
454AC_CHECK_SIZEOF(int, 4)
455AC_CHECK_SIZEOF(long, 4)
456AC_CHECK_SIZEOF(long long, 8)
457
458dnl
459dnl Checks for u_intXX_t
460dnl AC_CHECK_BITTYPES(ac_cv_bittypes)
461dnl if test "$ac_cv_bittypes" = no; then
462dnl 	missing_includes=yes
463dnl fi
464
465dnl
466dnl Checks for addrinfo structure
467AC_STRUCT_ADDRINFO(ac_cv_addrinfo)
468if test "$ac_cv_addrinfo" = no; then
469	missing_includes=yes
470fi
471
472dnl
473dnl Checks for NI_MAXSERV
474AC_NI_MAXSERV(ac_cv_maxserv)
475if test "$ac_cv_maxserv" = no; then
476	missing_includes=yes
477fi
478
479dnl
480dnl Checks for NI_NAMEREQD
481AC_NI_NAMEREQD(ac_cv_namereqd)
482if test "$ac_cv_namereqd" = no; then
483	missing_includes=yes
484fi
485
486dnl
487dnl Checks for sockaddr_storage structure
488AC_STRUCT_SA_STORAGE(ac_cv_sa_storage)
489if test "$ac_cv_sa_storage" = no; then
490	missing_includes=yes
491fi
492
493dnl
494dnl Checks for IN[6]ADDRSZ
495AC_CHECK_ADDRSZ(ac_cv_addrsz)
496if test "$ac_cv_addrsz" = no; then
497	missing_includes=yes
498fi
499
500dnl
501dnl Checks for RES_USE_INET6
502AC_CHECK_RES_USE_INET6(ac_cv_res_inet6)
503if test "$ac_cv_res_inet6" = no; then
504	missing_includes=yes
505fi
506
507dnl
508dnl Checks for res_state_ext structure
509AC_STRUCT_RES_STATE_EXT(ac_cv_res_state_ext)
510if test "$ac_cv_res_state_ext" = no; then
511	missing_includes=yes
512fi
513
514dnl
515dnl Checks if res_state structure has nsort member.
516AC_STRUCT_RES_STATE(ac_cv_res_state)
517
518
519AC_REPLACE_FUNCS(vfprintf strcasecmp strlcat strlcpy strdup strsep)
520AC_CHECK_FUNCS(strftime)
521AC_CHECK_FUNCS(setlinebuf alarm)
522
523needsnprintf=no
524AC_CHECK_FUNCS(vsnprintf snprintf,,
525	[needsnprintf=yes])
526if test $needsnprintf = yes; then
527	AC_LIBOBJ(snprintf)
528fi
529
530AC_LBL_TYPE_SIGNAL
531
532AC_SEARCH_LIBS(dnet_htoa, dnet, AC_DEFINE(HAVE_DNET_HTOA))
533
534AC_CHECK_LIB(rpc, main)		dnl It's unclear why we might need -lrpc
535
536dnl Some platforms may need -lnsl for getrpcbynumber.
537AC_SEARCH_LIBS(getrpcbynumber, nsl, AC_DEFINE(HAVE_GETRPCBYNUMBER))
538
539dnl AC_CHECK_LIB(z, uncompress)
540dnl AC_CHECK_HEADERS(zlib.h)
541
542AC_LBL_LIBPCAP(V_PCAPDEP, V_INCLS)
543
544#
545# Check for these after AC_LBL_LIBPCAP, so we link with the appropriate
546# libraries (e.g., "-lsocket -lnsl" on Solaris).
547#
548# We don't use AC_REPLACE_FUNCS because that uses AC_CHECK_FUNCS which
549# use AC_CHECK_FUNC which doesn't let us specify the right #includes
550# to make this work on BSD/OS 4.x.  BSD/OS 4.x ships with the BIND8
551# resolver, and the way it defines inet_{ntop,pton} is rather strange;
552# it does not ship with a libc symbol "inet_ntop()", it ships with
553# "_inet_ntop()", and has a #define macro in one of the system headers
554# to rename it.
555#
556dnl AC_TRY_COMPILE(inet_ntop inet_pton inet_aton)
557AC_MSG_CHECKING(for inet_ntop)
558AC_TRY_LINK([#include <sys/types.h>
559#include <sys/socket.h>
560#include <netinet/in.h>
561#include <arpa/inet.h>], [char src[4], dst[128];
562inet_ntop(AF_INET, src, dst, sizeof(dst));],
563	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
564	AC_LIBOBJ(inet_ntop)])
565AC_MSG_CHECKING(for inet_pton)
566AC_TRY_LINK([#include <sys/types.h>
567#include <sys/socket.h>
568#include <netinet/in.h>
569#include <arpa/inet.h>], [char src[128], dst[4];
570inet_pton(AF_INET, src, dst);],
571	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
572	AC_LIBOBJ(inet_pton)])
573AC_MSG_CHECKING(for inet_aton)
574AC_TRY_LINK([#include <sys/types.h>
575#include <netinet/in.h>
576#include <arpa/inet.h>], [char src[128];
577struct in_addr dst;
578inet_aton(src, &dst);],
579	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
580	AC_LIBOBJ(inet_aton)])
581
582#
583# Check for these after AC_LBL_LIBPCAP, for the same reason.
584#
585# You are in a twisty little maze of UN*Xes, all different.
586# Some might not have ether_ntohost().
587# Some might have it, but not declare it in any header file.
588# Some might have it, but declare it in <netinet/if_ether.h>.
589# Some might have it, but declare it in <netinet/ether.h>
590# (And some might have it but document it as something declared in
591# <netinet/ethernet.h>, although <netinet/if_ether.h> appears to work.)
592#
593# Before you is a C compiler.
594#
595AC_CHECK_FUNCS(ether_ntohost, [
596    AC_CACHE_CHECK(for buggy ether_ntohost, ac_cv_buggy_ether_ntohost, [
597	AC_TRY_RUN([
598		#include <netdb.h>
599		#include <sys/types.h>
600		#include <sys/param.h>
601		#include <sys/socket.h>
602
603		int
604		main(int argc, char **argv)
605		{
606			u_char ea[6] = { 0xff, 0xff, 0xff, 0xff, 0xff };
607			char name[MAXHOSTNAMELEN];
608
609			ether_ntohost(name, (struct ether_addr *)ea);
610			exit(0);
611		}
612	], [ac_cv_buggy_ether_ntohost=no],
613	   [ac_cv_buggy_ether_ntohost=yes],
614	   [ac_cv_buggy_ether_ntohost="not while cross-compiling"])])
615    if test "$ac_cv_buggy_ether_ntohost" = "no"; then
616	AC_DEFINE(USE_ETHER_NTOHOST)
617    fi
618])
619if test "$ac_cv_func_ether_ntohost" = yes -a \
620    "$ac_cv_buggy_ether_ntohost" = "no"; then
621	#
622	# OK, we have ether_ntohost().  Do we have <netinet/if_ether.h>?
623	#
624	if test "$ac_cv_header_netinet_if_ether_h" = yes; then
625		#
626		# Yes.  Does it declare ether_ntohost()?
627		#
628		AC_CHECK_DECL(ether_ntohost,
629		    [
630			AC_DEFINE(NETINET_IF_ETHER_H_DECLARES_ETHER_NTOHOST,,
631			    [Define to 1 if netinet/if_ether.h declares `ether_ntohost'])
632		    ],,
633		    [
634#include <sys/types.h>
635#include <sys/socket.h>
636#include <netinet/in.h>
637#include <arpa/inet.h>
638struct mbuf;
639struct rtentry;
640#include <net/if.h>
641#include <netinet/if_ether.h>
642		    ])
643	fi
644	#
645	# Did that succeed?
646	#
647	if test "$ac_cv_have_decl_ether_ntohost" != yes; then
648		#
649		# No, how about <netinet/ether.h>, as on Linux?
650		#
651		AC_CHECK_HEADERS(netinet/ether.h)
652		if test "$ac_cv_header_netinet_ether_h" = yes; then
653			#
654			# We have it - does it declare ether_ntohost()?
655			# Unset ac_cv_have_decl_ether_ntohost so we don't
656			# treat the previous failure as a cached value and
657			# suppress the next test.
658			#
659			unset ac_cv_have_decl_ether_ntohost
660			AC_CHECK_DECL(ether_ntohost,
661			    [
662				AC_DEFINE(NETINET_ETHER_H_DECLARES_ETHER_NTOHOST,,
663				    [Define to 1 if netinet/ether.h declares `ether_ntohost'])
664			    ],,
665			    [
666#include <netinet/ether.h>
667			    ])
668		fi
669	fi
670	#
671	# Is ether_ntohost() declared?
672	#
673	if test "$ac_cv_have_decl_ether_ntohost" != yes; then
674		#
675		# No, we'll have to declare it ourselves.
676		# Do we have "struct ether_addr"?
677		#
678		AC_CHECK_TYPES(struct ether_addr,,,
679		    [
680#include <sys/types.h>
681#include <sys/socket.h>
682#include <netinet/in.h>
683#include <arpa/inet.h>
684struct mbuf;
685struct rtentry;
686#include <net/if.h>
687#include <netinet/if_ether.h>
688		    ])
689		AC_DEFINE(HAVE_DECL_ETHER_NTOHOST, 0,
690		    [Define to 1 if you have the declaration of `ether_ntohost', and to 0 if you
691don't.])
692	else
693		AC_DEFINE(HAVE_DECL_ETHER_NTOHOST, 1,
694		    [Define to 1 if you have the declaration of `ether_ntohost', and to 0 if you
695don't.])
696	fi
697fi
698
699dnl portability macros for getaddrinfo/getnameinfo
700dnl
701dnl Check for sa_len
702AC_CHECK_SA_LEN(ac_cv_sockaddr_has_sa_len)
703if test "$ac_cv_sockaddr_has_sa_len" = no; then
704	missing_includes=yes
705fi
706
707AC_CHECK_FUNCS(pcap_findalldevs pcap_dump_flush pcap_lib_version)
708if test $ac_cv_func_pcap_findalldevs = "yes" ; then
709dnl Check for Mac OS X, which may ship pcap.h from 0.6 but libpcap may
710dnl be 0.8; this means that lib has pcap_findalldevs but header doesn't
711dnl have pcap_if_t.
712    savedcflags="$CFLAGS"
713    CFLAGS="$CFLAGS $V_INCLS"
714    AC_CHECK_TYPES(pcap_if_t, , , [#include <pcap.h>])
715    CFLAGS="$savedcflags"
716fi
717
718if test $ac_cv_func_pcap_lib_version = "no" ; then
719    AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
720    AC_TRY_LINK([],
721       [
722	extern char pcap_version[];
723
724	return (int)pcap_version;
725       ],
726       ac_lbl_cv_pcap_version_defined=yes,
727       ac_lbl_cv_pcap_version_defined=no)
728    if test "$ac_lbl_cv_pcap_version_defined" = yes ; then
729    	AC_MSG_RESULT(yes)
730	AC_DEFINE(HAVE_PCAP_VERSION)
731    else
732	AC_MSG_RESULT(no)
733    fi
734fi
735AC_MSG_CHECKING(whether pcap_debug is defined by libpcap)
736AC_TRY_LINK([],
737   [
738	extern int pcap_debug;
739
740	return pcap_debug;
741   ],
742   ac_lbl_cv_pcap_debug_defined=yes,
743   ac_lbl_cv_pcap_debug_defined=no)
744if test "$ac_lbl_cv_pcap_debug_defined" = yes ; then
745	AC_MSG_RESULT(yes)
746	AC_DEFINE(HAVE_PCAP_DEBUG)
747else
748	AC_MSG_RESULT(no)
749	#
750	# OK, what about "yydebug"?
751	#
752	AC_MSG_CHECKING(whether yydebug is defined by libpcap)
753	AC_TRY_LINK([],
754	   [
755		extern int yydebug;
756
757		return yydebug;
758	   ],
759	   ac_lbl_cv_yydebug_defined=yes,
760	   ac_lbl_cv_yydebug_defined=no)
761	if test "$ac_lbl_cv_yydebug_defined" = yes ; then
762		AC_MSG_RESULT(yes)
763		AC_DEFINE(HAVE_YYDEBUG)
764	else
765		AC_MSG_RESULT(no)
766	fi
767fi
768AC_REPLACE_FUNCS(bpf_dump)	dnl moved to libpcap in 0.6
769
770V_GROUP=0
771if test -f /etc/group -a ! -z "`grep '^wheel:' /etc/group`" ; then
772	V_GROUP=wheel
773fi
774case "$host_os" in
775
776aix*)
777	dnl Workaround to enable certain features
778	AC_DEFINE(_SUN)
779	;;
780
781irix*)
782	V_GROUP=sys
783	;;
784
785osf*)
786	V_GROUP=system
787	;;
788
789solaris*)
790	V_GROUP=sys
791	;;
792esac
793
794if test -f /dev/bpf0 ; then
795	V_GROUP=bpf
796fi
797
798AC_CHECK_HEADERS(sys/bitypes.h)
799
800AC_CHECK_TYPE([int8_t], ,
801	[AC_DEFINE([int8_t], [signed char],
802	[Define to `signed char' if int8_t not defined.])])
803AC_CHECK_TYPE([u_int8_t], ,
804	[AC_DEFINE([u_int8_t], [unsigned char],
805	[Define to `unsigned char' if u_int8_t not defined.])],
806	[AC_INCLUDES_DEFAULT
807#ifdef HAVE_SYS_BITYPES_H
808#include <sys/bitypes.h>
809#endif])
810AC_CHECK_TYPE([int16_t], ,
811	[AC_DEFINE([int16_t], [short],
812	[Define to `short' if int16_t not defined.])])
813AC_CHECK_TYPE([u_int16_t], ,
814	[AC_DEFINE([u_int16_t], [unsigned short],
815	[Define to `unsigned short' if u_int16_t not defined.])],
816	[AC_INCLUDES_DEFAULT
817#ifdef HAVE_SYS_BITYPES_H
818#include <sys/bitypes.h>
819#endif])
820AC_CHECK_TYPE([int32_t], ,
821	[AC_DEFINE([int32_t], [int],
822	[Define to `int' if int32_t not defined.])])
823AC_CHECK_TYPE([u_int32_t], ,
824	[AC_DEFINE([u_int32_t], [unsigned int],
825	[Define to `unsigned int' if u_int32_t not defined.])],
826	[AC_INCLUDES_DEFAULT
827#ifdef HAVE_SYS_BITYPES_H
828#include <sys/bitypes.h>
829#endif])
830AC_CHECK_TYPE([int64_t], ,
831	[AC_DEFINE([int64_t], [long long],
832	[Define to `long long' if int64_t not defined.])])
833AC_CHECK_TYPE([u_int64_t], ,
834	[AC_DEFINE([u_int64_t], [unsigned long long],
835	[Define to `unsigned long long' if u_int64_t not defined.])],
836	[AC_INCLUDES_DEFAULT
837#ifdef HAVE_SYS_BITYPES_H
838#include <sys/bitypes.h>
839#endif])
840
841#
842# We can't just check for <inttypes.h> - some systems have one that
843# doesn't define all the PRI[doxu]64 macros.
844#
845AC_CHECK_HEADERS(inttypes.h,
846  [
847    #
848    # OK, we have inttypes.h, but does it define those macros?
849    #
850    AC_MSG_CHECKING([[whether inttypes.h defines the PRI[doxu]64 macros]])
851    AC_COMPILE_IFELSE(
852      [
853	AC_LANG_SOURCE(
854	  [[
855	    #include <inttypes.h>
856	    #include <stdio.h>
857	    #include <sys/types.h>
858	    #ifdef HAVE_SYS_BITYPES_H
859	    #include <sys/bitypes.h>
860	    #endif
861
862	    main()
863	    {
864	      printf("%" PRId64 "\n", (u_int64_t)1);
865	      printf("%" PRIo64 "\n", (u_int64_t)1);
866	      printf("%" PRIx64 "\n", (u_int64_t)1);
867	      printf("%" PRIu64 "\n", (u_int64_t)1);
868	    }
869	  ]])
870      ],
871      [
872	AC_MSG_RESULT(yes)
873	ac_lbl_inttypes_h_defines_formats=yes
874      ],
875      [
876	AC_MSG_RESULT(no)
877	ac_lbl_inttypes_h_defines_formats=no
878      ])
879  ],
880  [
881    #
882    # We don't have inttypes.h, so it obviously can't define those
883    # macros.
884    #
885    ac_lbl_inttypes_h_defines_formats=no
886  ])
887if test "$ac_lbl_inttypes_h_defines_formats" = no; then
888  AC_LBL_CHECK_64BIT_FORMAT(l,
889    [
890      AC_LBL_CHECK_64BIT_FORMAT(ll,
891        [
892          AC_LBL_CHECK_64BIT_FORMAT(L,
893	    [
894	      AC_LBL_CHECK_64BIT_FORMAT(q,
895	        [
896	          AC_MSG_ERROR([neither %llx nor %Lx nor %qx worked on a 64-bit integer])
897	        ])
898	    ])
899	])
900    ])
901fi
902
903AC_LBL_DEVEL(V_CCOPT)
904
905AC_LBL_SOCKADDR_SA_LEN
906
907AC_LBL_UNALIGNED_ACCESS
908
909AC_VAR_H_ERRNO
910
911AC_ARG_WITH(crypto, [  --without-crypto        disable crypto support],
912	[], [
913AC_MSG_CHECKING(for SSLeay)
914ac_cv_ssleay_path=no
915incdir=no
916
917#
918# If Xprefix is set in the environment, use that value.
919# XXX - this should arguably be done by having --with-crypto take an
920# optional argument, and have that argument be used to set Xprefix
921# if present.
922#
923if test -z "$Xprefix"; then
924	Xprefix=`eval echo $prefix`
925fi
926
927for dir in $Xprefix /usr/${host_alias} /usr /usr/local /usr/local/ssl /usr/pkg; do
928	#
929	# XXX - is there a better way to check if a given library is
930	# in a given directory than checking each of the possible
931	# shared library suffixes?
932	#
933	# Are there any other suffixes we need to look for?  Do we have to
934	# worry about ".so.{version}"?
935	#
936	# Or should we just look for "libcrypto.*"?
937	#
938	if test -d $dir/lib -a \( -f $dir/lib/libcrypto.a -o \
939			          -f $dir/lib/libcrypto.so -o \
940			          -f $dir/lib/libcrypto.sl -o \
941				  -f $dir/lib/libcrypto.dylib \); then
942		ac_cv_ssleay_path=$dir
943	fi
944	if test -d $dir/include/openssl -a -f $dir/include/openssl/des.h; then
945		incdir="-I$dir/include"
946	fi
947	if test "$ac_cv_ssleay_path" != "no" -a "$incdir" != "no"; then
948		break;
949	else
950		ac_cv_ssleay_path=no
951		incdir=no
952	fi
953done
954AC_MSG_RESULT($ac_cv_ssleay_path)
955if test "$ac_cv_ssleay_path" != no; then
956	V_INCLS="$V_INCLS $incdir"
957	LDFLAGS="-L$dir/lib $LDFLAGS"
958	if test -f $ac_cv_ssleay_path/lib/libRSAglue.a; then
959		LIBS="$LIBS -lRSAglue"
960	fi
961	if test -f $ac_cv_ssleay_path/lib/librsaref.a; then
962		LIBS="$LIBS -lrsaref"
963	fi
964	AC_CHECK_LIB(crypto, DES_cbc_encrypt)
965
966	CPPFLAGS="$CPPFLAGS $V_INCLS"
967	AC_CHECK_HEADERS(openssl/evp.h)
968fi
969])
970
971dnl
972dnl set additional include path if necessary
973if test "$missing_includes" = "yes"; then
974	CPPFLAGS="$CPPFLAGS -I\$(srcdir)/missing"
975	V_INCLS="$V_INCLS -I\$(srcdir)/missing"
976fi
977
978AC_SUBST(V_CCOPT)
979AC_SUBST(V_DEFS)
980AC_SUBST(V_GROUP)
981AC_SUBST(V_INCLS)
982AC_SUBST(V_PCAPDEP)
983AC_SUBST(LOCALSRC)
984
985AC_PROG_INSTALL
986
987AC_CONFIG_HEADER(config.h)
988
989AC_OUTPUT_COMMANDS([if test -f .devel; then
990	echo timestamp > stamp-h
991	cat Makefile-devel-adds >> Makefile
992	make depend
993fi])
994AC_OUTPUT(Makefile)
995exit 0
996