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_PREREQ(2.61)
19AC_INIT(tcpdump.c)
20
21AC_CANONICAL_HOST
22
23AC_LBL_C_INIT_BEFORE_CC(V_INCLS)
24AC_PROG_CC
25AC_LBL_C_INIT(V_CCOPT, V_INCLS)
26AC_LBL_C_INLINE
27AC_C___ATTRIBUTE__
28if test "$ac_cv___attribute__" = "yes"; then
29	AC_C___ATTRIBUTE___UNUSED
30	AC_C___ATTRIBUTE___NORETURN_FUNCTION_POINTER
31	AC_C___ATTRIBUTE___FORMAT
32	if test "$ac_cv___attribute___format" = "yes"; then
33		AC_C___ATTRIBUTE___FORMAT_FUNCTION_POINTER
34	fi
35fi
36AC_CHECK_HEADERS(fcntl.h rpc/rpc.h rpc/rpcent.h netdnet/dnetdb.h)
37AC_CHECK_HEADERS(net/pfvar.h, , , [#include <sys/types.h>
38#include <sys/socket.h>
39#include <net/if.h>])
40if test "$ac_cv_header_net_pfvar_h" = yes; then
41	LOCALSRC="print-pflog.c $LOCALSRC"
42fi
43AC_CHECK_HEADERS(netinet/if_ether.h, , , [#include <sys/types.h>
44#include <sys/socket.h>])
45if test "$ac_cv_header_netinet_if_ether_h" != yes; then
46	#
47	# The simple test didn't work.
48	# Do we need to include <net/if.h> first?
49	# Unset ac_cv_header_netinet_if_ether_h so we don't
50	# treat the previous failure as a cached value and
51	# suppress the next test.
52	#
53	AC_MSG_NOTICE([Rechecking with some additional includes])
54	unset ac_cv_header_netinet_if_ether_h
55	AC_CHECK_HEADERS(netinet/if_ether.h, , , [#include <sys/types.h>
56#include <sys/socket.h>
57#include <netinet/in.h>
58struct mbuf;
59struct rtentry;
60#include <net/if.h>])
61fi
62
63AC_HEADER_TIME
64
65case "$host_os" in
66
67darwin*)
68	AC_ARG_ENABLE(universal,
69	AC_HELP_STRING([--disable-universal],[don't build universal on OS X]))
70	if test "$enable_universal" != "no"; then
71		case "$host_os" in
72
73		darwin9.*)
74			#
75			# Leopard.  Build for x86 and 32-bit PowerPC, with
76			# x86 first.  (That's what Apple does.)
77			#
78			V_CCOPT="$V_CCOPT -arch i386 -arch ppc"
79			LDFLAGS="$LDFLAGS -arch i386 -arch ppc"
80			;;
81
82		darwin10.*)
83			#
84			# Snow Leopard.  Build for x86-64 and x86, with
85			# x86-64 first.  (That's what Apple does.)
86			#
87			V_CCOPT="$V_CCOPT -arch x86_64 -arch i386"
88			LDFLAGS="$LDFLAGS -arch x86_64 -arch i386"
89			;;
90		esac
91	fi
92	;;
93
94linux*)
95	AC_MSG_CHECKING(Linux kernel version)
96 	if test "$cross_compiling" = yes; then
97 		AC_CACHE_VAL(ac_cv_linux_vers,
98 		    ac_cv_linux_vers=unknown)
99 	else
100 		AC_CACHE_VAL(ac_cv_linux_vers,
101 		    ac_cv_linux_vers=`uname -r 2>&1 | \
102 			sed -n -e '$s/.* //' -e '$s/\..*//p'`)
103 	fi
104	AC_MSG_RESULT($ac_cv_linux_vers)
105 	if test $ac_cv_linux_vers = unknown ; then
106 		AC_MSG_ERROR(cannot determine linux version when cross-compiling)
107 	fi
108	if test $ac_cv_linux_vers -lt 2 ; then
109		AC_MSG_ERROR(version 2 or higher required; see the INSTALL doc for more info)
110	fi
111	;;
112
113*)
114	;;
115esac
116
117
118AC_ARG_WITH(smi,
119[  --with-smi              link with libsmi (allows to load MIBs on the fly to decode SNMP packets. [default=yes]
120  --without-smi           don't link with libsmi],,
121   with_smi=yes)
122
123if test "x$with_smi" != "xno" ; then
124AC_CHECK_HEADERS(smi.h)
125AC_CHECK_LIB(smi, smiInit)
126if test "$ac_cv_header_smi_h" = yes -a "$ac_cv_lib_smi_smiInit" = yes
127then
128AC_MSG_CHECKING([whether to enable libsmi])
129        AC_TRY_RUN([ /* libsmi available check */
130#include <smi.h>
131main()
132{
133  int current, revision, age, n;
134  const int required = 2;
135  if (smiInit(""))
136    exit(1);
137  if (strcmp(SMI_LIBRARY_VERSION, smi_library_version))
138    exit(2);
139  n = sscanf(smi_library_version, "%d:%d:%d", &current, &revision, &age);
140  if (n != 3)
141    exit(3);
142  if (required < current - age || required > current)
143    exit(4);
144  exit(0);
145}
146],
147[ AC_MSG_RESULT(yes)
148  AC_DEFINE(LIBSMI, 1, [Define if you enable support for libsmi])
149  libsmi=yes],
150dnl autoconf documentation says that $? contains the exit value.
151dnl reality is that it does not.  We leave this in just in case
152dnl autoconf ever comes back to match the documentation.
153[ case $? in
154  1) AC_MSG_RESULT(no - smiInit failed) ;;
155  2) AC_MSG_RESULT(no - header/library version mismatch) ;;
156  3) AC_MSG_RESULT(no - can't determine library version) ;;
157  4) AC_MSG_RESULT(no - too old) ;;
158  *) AC_MSG_RESULT(no) ;;
159  esac
160  libsmi=no],
161[ AC_MSG_RESULT(not when cross-compiling)
162  libsmi=no]
163)
164fi
165fi
166
167AC_MSG_CHECKING([whether to enable the possibly-buggy SMB printer])
168AC_ARG_ENABLE(smb,
169[  --enable-smb            enable possibly-buggy SMB printer [default=yes]
170  --disable-smb           disable possibly-buggy SMB printer],,
171   enableval=yes)
172case "$enableval" in
173yes)	AC_MSG_RESULT(yes)
174	AC_WARN([The SMB printer may have exploitable buffer overflows!!!])
175	AC_DEFINE(TCPDUMP_DO_SMB, 1,
176	    [define if you want to build the possibly-buggy SMB printer])
177	LOCALSRC="print-smb.c smbutil.c $LOCALSRC"
178	;;
179*)	AC_MSG_RESULT(no)
180	;;
181esac
182
183AC_ARG_WITH(user, [  --with-user=USERNAME    drop privileges by default to USERNAME])
184AC_MSG_CHECKING([whether to drop root privileges by default])
185if test ! -z "$with_user" ; then
186       AC_DEFINE_UNQUOTED(WITH_USER, "$withval",
187           [define if should drop privileges by default])
188       AC_MSG_RESULT(to \"$withval\")
189else
190       AC_MSG_RESULT(no)
191fi
192
193AC_ARG_WITH(chroot, [  --with-chroot=DIRECTORY when dropping privileges, chroot to DIRECTORY])
194AC_MSG_CHECKING([whether to chroot])
195if test ! -z "$with_chroot" && test "$with_chroot" != "no" ; then
196       AC_DEFINE_UNQUOTED(WITH_CHROOT, "$withval",
197           [define if should chroot when dropping privileges])
198       AC_MSG_RESULT(to \"$withval\")
199else
200       AC_MSG_RESULT(no)
201fi
202
203#
204# We must check this before checking whether to enable IPv6, because,
205# on some platforms (such as SunOS 5.x), the test program requires
206# the extra networking libraries.
207#
208AC_LBL_LIBRARY_NET
209
210AC_MSG_CHECKING([whether to enable ipv6])
211AC_ARG_ENABLE(ipv6,
212[  --enable-ipv6           enable ipv6 (with ipv4) support
213  --disable-ipv6          disable ipv6 support],
214[ case "$enableval" in
215yes)   AC_MSG_RESULT(yes)
216       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"
217       AC_DEFINE(INET6, 1, [Define if you enable IPv6 support])
218       ipv6=yes
219       ;;
220*)
221       AC_MSG_RESULT(no)
222       ipv6=no
223       ;;
224  esac ],
225
226  AC_COMPILE_IFELSE(
227    [
228      AC_LANG_SOURCE(
229	[[/* AF_INET6 available check */
230#include <sys/types.h>
231#include <sys/socket.h>
232#include <netinet/in.h>
233#ifdef AF_INET6
234void
235foo(struct in6_addr *addr)
236{
237 memset(addr, 0, sizeof (struct in6_addr));
238}
239#else
240#error "AF_INET6 not defined"
241#endif
242        ]])
243    ],
244[ AC_MSG_RESULT(yes)
245  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 $LOCALSRC"
246  AC_DEFINE(INET6, 1, [Define if you enable IPv6 support])
247  ipv6=yes],
248[ AC_MSG_RESULT(no)
249  ipv6=no],
250[ AC_MSG_RESULT(no)
251  ipv6=no]
252))
253
254ipv6type=unknown
255ipv6lib=none
256ipv6trylibc=no
257
258if test "$ipv6" = "yes"; then
259	AC_MSG_CHECKING([ipv6 stack type])
260	for i in inria kame linux-glibc linux-libinet6 toshiba v6d zeta; do
261		case $i in
262		inria)
263			dnl http://www.kame.net/
264			AC_EGREP_CPP(yes,
265[#include <netinet/in.h>
266#ifdef IPV6_INRIA_VERSION
267yes
268#endif],
269				[ipv6type=$i;
270				CFLAGS="-DINET6 $CFLAGS"])
271			;;
272		kame)
273			dnl http://www.kame.net/
274			AC_EGREP_CPP(yes,
275[#include <netinet/in.h>
276#ifdef __KAME__
277yes
278#endif],
279				[ipv6type=$i;
280				ipv6lib=inet6;
281				ipv6libdir=/usr/local/v6/lib;
282				ipv6trylibc=yes;
283				CFLAGS="-DINET6 $CFLAGS"])
284			;;
285		linux-glibc)
286			dnl http://www.v6.linux.or.jp/
287			AC_EGREP_CPP(yes,
288[#include <features.h>
289#if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
290yes
291#endif],
292				[ipv6type=$i;
293				CFLAGS="-DINET6 $CFLAGS"])
294			;;
295		linux-libinet6)
296			dnl http://www.v6.linux.or.jp/
297			dnl
298			dnl This also matches Solaris 8 and Tru64 UNIX 5.1,
299			dnl and possibly other versions of those OSes
300			dnl
301			if test -d /usr/inet6 -o -f /usr/include/netinet/ip6.h; then
302				ipv6type=$i
303				ipv6lib=inet6
304				ipv6libdir=/usr/inet6/lib
305				ipv6trylibc=yes;
306				CFLAGS="-DINET6 -I/usr/inet6/include $CFLAGS"
307			fi
308			;;
309		toshiba)
310			AC_EGREP_CPP(yes,
311[#include <sys/param.h>
312#ifdef _TOSHIBA_INET6
313yes
314#endif],
315				[ipv6type=$i;
316				ipv6lib=inet6;
317				ipv6libdir=/usr/local/v6/lib;
318				CFLAGS="-DINET6 $CFLAGS"])
319			;;
320		v6d)
321			AC_EGREP_CPP(yes,
322[#include </usr/local/v6/include/sys/v6config.h>
323#ifdef __V6D__
324yes
325#endif],
326				[ipv6type=$i;
327				ipv6lib=v6;
328				ipv6libdir=/usr/local/v6/lib;
329				CFLAGS="-I/usr/local/v6/include $CFLAGS"])
330			;;
331		zeta)
332			AC_EGREP_CPP(yes,
333[#include <sys/param.h>
334#ifdef _ZETA_MINAMI_INET6
335yes
336#endif],
337				[ipv6type=$i;
338				ipv6lib=inet6;
339				ipv6libdir=/usr/local/v6/lib;
340				CFLAGS="-DINET6 $CFLAGS"])
341			;;
342		esac
343		if test "$ipv6type" != "unknown"; then
344			break
345		fi
346	done
347	AC_MSG_RESULT($ipv6type)
348fi
349
350if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then
351	if test -d $ipv6libdir -a -f $ipv6libdir/lib$ipv6lib.a; then
352		LIBS="-L$ipv6libdir -l$ipv6lib $LIBS"
353		echo "You have $ipv6lib library, using it"
354	else
355		if test "$ipv6trylibc" = "yes"; then
356			echo "You do not have $ipv6lib library, using libc"
357		else
358			echo 'Fatal: no $ipv6lib library found.  cannot continue.'
359			echo "You need to fetch lib$ipv6lib.a from appropriate"
360			echo 'ipv6 kit and compile beforehand.'
361			exit 1
362		fi
363	fi
364fi
365
366
367if test "$ipv6" = "yes"; then
368	#
369	# XXX - on Tru64 UNIX 5.1, there is no "getaddrinfo()"
370	# function in libc; there are "ngetaddrinfo()" and
371	# "ogetaddrinfo()" functions, and <netdb.h> #defines
372	# "getaddrinfo" to be either "ngetaddrinfo" or
373	# "ogetaddrinfo", depending on whether _SOCKADDR_LEN
374	# or _XOPEN_SOURCE_EXTENDED are defined or not.
375	#
376	# So this test doesn't work on Tru64 5.1, and possibly
377	# on other 5.x releases.  This causes the configure
378	# script to become confused, and results in libpcap
379	# being unbuildable.
380	#
381	AC_SEARCH_LIBS(getaddrinfo, socket, [dnl
382	AC_MSG_CHECKING(getaddrinfo bug)
383	AC_CACHE_VAL(td_cv_buggygetaddrinfo, [AC_TRY_RUN([
384#include <sys/types.h>
385#include <netdb.h>
386#include <string.h>
387#include <sys/socket.h>
388#include <netinet/in.h>
389
390main()
391{
392  int passive, gaierr, inet4 = 0, inet6 = 0;
393  struct addrinfo hints, *ai, *aitop;
394  char straddr[INET6_ADDRSTRLEN], strport[16];
395
396  for (passive = 0; passive <= 1; passive++) {
397    memset(&hints, 0, sizeof(hints));
398    hints.ai_family = AF_UNSPEC;
399    hints.ai_flags = passive ? AI_PASSIVE : 0;
400    hints.ai_socktype = SOCK_STREAM;
401    hints.ai_protocol = IPPROTO_TCP;
402    if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) {
403      (void)gai_strerror(gaierr);
404      goto bad;
405    }
406    for (ai = aitop; ai; ai = ai->ai_next) {
407      if (ai->ai_addr == NULL ||
408          ai->ai_addrlen == 0 ||
409          getnameinfo(ai->ai_addr, ai->ai_addrlen,
410                      straddr, sizeof(straddr), strport, sizeof(strport),
411                      NI_NUMERICHOST|NI_NUMERICSERV) != 0) {
412        goto bad;
413      }
414      switch (ai->ai_family) {
415      case AF_INET:
416        if (strcmp(strport, "54321") != 0) {
417          goto bad;
418        }
419        if (passive) {
420          if (strcmp(straddr, "0.0.0.0") != 0) {
421            goto bad;
422          }
423        } else {
424          if (strcmp(straddr, "127.0.0.1") != 0) {
425            goto bad;
426          }
427        }
428        inet4++;
429        break;
430      case AF_INET6:
431        if (strcmp(strport, "54321") != 0) {
432          goto bad;
433        }
434        if (passive) {
435          if (strcmp(straddr, "::") != 0) {
436            goto bad;
437          }
438        } else {
439          if (strcmp(straddr, "::1") != 0) {
440            goto bad;
441          }
442        }
443        inet6++;
444        break;
445      case AF_UNSPEC:
446        goto bad;
447        break;
448#ifdef AF_UNIX
449      case AF_UNIX:
450#else
451#ifdef AF_LOCAL
452      case AF_LOCAL:
453#endif
454#endif
455      default:
456        /* another family support? */
457        break;
458      }
459    }
460  }
461
462  /* supported family should be 2, unsupported family should be 0 */
463  if (!(inet4 == 0 || inet4 == 2))
464    goto bad;
465  if (!(inet6 == 0 || inet6 == 2))
466    goto bad;
467
468  if (aitop)
469    freeaddrinfo(aitop);
470  exit(0);
471
472 bad:
473  if (aitop)
474    freeaddrinfo(aitop);
475  exit(1);
476}
477],
478	td_cv_buggygetaddrinfo=no,
479	td_cv_buggygetaddrinfo=yes,
480	td_cv_buggygetaddrinfo=yes)])
481	if test "$td_cv_buggygetaddrinfo" = no; then
482		AC_MSG_RESULT(good)
483	else
484		AC_MSG_RESULT(buggy)
485	fi
486
487	if test "$td_cv_buggygetaddrinfo" = "yes"; then
488		#
489		# XXX - it doesn't appear that "ipv6type" can ever be
490		# set to "linux".  Should this be testing for
491		# "linux-glibc", or for that *or* "linux-libinet6"?
492		# If the latter, note that "linux-libinet6" is also
493		# the type given to some non-Linux OSes.
494		#
495		if test "$ipv6type" != "linux"; then
496			echo 'Fatal: You must get working getaddrinfo() function.'
497			echo '       or you can specify "--disable-ipv6"'.
498			exit 1
499		else
500			echo 'Warning: getaddrinfo() implementation on your system seems be buggy.'
501			echo '         Better upgrade your system library to newest version'
502			echo '         of GNU C library (aka glibc).'
503		fi
504	fi
505	])
506	AC_REPLACE_FUNCS(getnameinfo)
507fi
508
509AC_CACHE_CHECK([for dnet_htoa declaration in netdnet/dnetdb.h],
510[td_cv_decl_netdnet_dnetdb_h_dnet_htoa],
511[AC_EGREP_HEADER(dnet_htoa, netdnet/dnetdb.h,
512	td_cv_decl_netdnet_dnetdb_h_dnet_htoa=yes,
513	td_cv_decl_netdnet_dnetdb_h_dnet_htoa=no)])
514if test "$td_cv_decl_netdnet_dnetdb_h_dnet_htoa" = yes; then
515	AC_DEFINE(HAVE_NETDNET_DNETDB_H_DNET_HTOA, 1,
516	    [define if you have a dnet_htoa declaration in <netdnet/dnetdb.h>])
517fi
518
519dnl
520dnl Checks for addrinfo structure
521AC_STRUCT_ADDRINFO(ac_cv_addrinfo)
522if test "$ac_cv_addrinfo" = no; then
523	missing_includes=yes
524fi
525
526dnl
527dnl Checks for NI_MAXSERV
528AC_NI_MAXSERV(ac_cv_maxserv)
529if test "$ac_cv_maxserv" = no; then
530	missing_includes=yes
531fi
532
533dnl
534dnl Checks for NI_NAMEREQD
535AC_NI_NAMEREQD(ac_cv_namereqd)
536if test "$ac_cv_namereqd" = no; then
537	missing_includes=yes
538fi
539
540dnl
541dnl Checks for sockaddr_storage structure
542AC_STRUCT_SA_STORAGE(ac_cv_sa_storage)
543if test "$ac_cv_sa_storage" = no; then
544	missing_includes=yes
545fi
546
547AC_REPLACE_FUNCS(vfprintf strcasecmp strlcat strlcpy strdup strsep)
548AC_CHECK_FUNCS(fork vfork strftime)
549AC_CHECK_FUNCS(setlinebuf alarm)
550
551needsnprintf=no
552AC_CHECK_FUNCS(vsnprintf snprintf,,
553	[needsnprintf=yes])
554if test $needsnprintf = yes; then
555	AC_LIBOBJ(snprintf)
556fi
557
558AC_LBL_TYPE_SIGNAL
559
560AC_SEARCH_LIBS(dnet_htoa, dnet,
561    AC_DEFINE(HAVE_DNET_HTOA, 1, [define if you have the dnet_htoa function]))
562
563AC_CHECK_LIB(rpc, main)		dnl It's unclear why we might need -lrpc
564
565dnl Some platforms may need -lnsl for getrpcbynumber.
566AC_SEARCH_LIBS(getrpcbynumber, nsl,
567    AC_DEFINE(HAVE_GETRPCBYNUMBER, 1, [define if you have getrpcbynumber()]))
568
569dnl AC_CHECK_LIB(z, uncompress)
570dnl AC_CHECK_HEADERS(zlib.h)
571
572AC_LBL_LIBPCAP(V_PCAPDEP, V_INCLS)
573
574#
575# Check for these after AC_LBL_LIBPCAP, so we link with the appropriate
576# libraries (e.g., "-lsocket -lnsl" on Solaris).
577#
578# We don't use AC_REPLACE_FUNCS because that uses AC_CHECK_FUNCS which
579# use AC_CHECK_FUNC which doesn't let us specify the right #includes
580# to make this work on BSD/OS 4.x.  BSD/OS 4.x ships with the BIND8
581# resolver, and the way it defines inet_{ntop,pton} is rather strange;
582# it does not ship with a libc symbol "inet_ntop()", it ships with
583# "_inet_ntop()", and has a #define macro in one of the system headers
584# to rename it.
585#
586dnl AC_TRY_COMPILE(inet_ntop inet_pton inet_aton)
587AC_MSG_CHECKING(for inet_ntop)
588AC_TRY_LINK([#include <sys/types.h>
589#include <sys/socket.h>
590#include <netinet/in.h>
591#include <arpa/inet.h>], [char src[4], dst[128];
592inet_ntop(AF_INET, src, dst, sizeof(dst));],
593	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
594	AC_LIBOBJ(inet_ntop)])
595AC_MSG_CHECKING(for inet_pton)
596AC_TRY_LINK([#include <sys/types.h>
597#include <sys/socket.h>
598#include <netinet/in.h>
599#include <arpa/inet.h>], [char src[128], dst[4];
600inet_pton(AF_INET, src, dst);],
601	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
602	AC_LIBOBJ(inet_pton)])
603AC_MSG_CHECKING(for inet_aton)
604AC_TRY_LINK([#include <sys/types.h>
605#include <netinet/in.h>
606#include <arpa/inet.h>], [char src[128];
607struct in_addr dst;
608inet_aton(src, &dst);],
609	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
610	AC_LIBOBJ(inet_aton)])
611
612#
613# Check for these after AC_LBL_LIBPCAP, for the same reason.
614#
615# You are in a twisty little maze of UN*Xes, all different.
616# Some might not have ether_ntohost().
617# Some might have it, but not declare it in any header file.
618# Some might have it, but declare it in <netinet/if_ether.h>.
619# Some might have it, but declare it in <netinet/ether.h>
620# (And some might have it but document it as something declared in
621# <netinet/ethernet.h>, although <netinet/if_ether.h> appears to work.)
622#
623# Before you is a C compiler.
624#
625AC_CHECK_FUNCS(ether_ntohost, [
626    AC_CACHE_CHECK(for buggy ether_ntohost, ac_cv_buggy_ether_ntohost, [
627	AC_TRY_RUN([
628		#include <netdb.h>
629		#include <sys/types.h>
630		#include <sys/param.h>
631		#include <sys/socket.h>
632
633		int
634		main(int argc, char **argv)
635		{
636			u_char ea[6] = { 0xff, 0xff, 0xff, 0xff, 0xff };
637			char name[MAXHOSTNAMELEN];
638
639			ether_ntohost(name, (struct ether_addr *)ea);
640			exit(0);
641		}
642	], [ac_cv_buggy_ether_ntohost=no],
643	   [ac_cv_buggy_ether_ntohost=yes],
644	   [ac_cv_buggy_ether_ntohost="not while cross-compiling"])])
645    if test "$ac_cv_buggy_ether_ntohost" = "no"; then
646	AC_DEFINE(USE_ETHER_NTOHOST, 1,
647	    [define if you have ether_ntohost() and it works])
648    fi
649])
650if test "$ac_cv_func_ether_ntohost" = yes -a \
651    "$ac_cv_buggy_ether_ntohost" = "no"; then
652	#
653	# OK, we have ether_ntohost().  Do we have <netinet/if_ether.h>?
654	#
655	if test "$ac_cv_header_netinet_if_ether_h" = yes; then
656		#
657		# Yes.  Does it declare ether_ntohost()?
658		#
659		AC_CHECK_DECL(ether_ntohost,
660		    [
661			AC_DEFINE(NETINET_IF_ETHER_H_DECLARES_ETHER_NTOHOST,,
662			    [Define to 1 if netinet/if_ether.h declares `ether_ntohost'])
663		    ],,
664		    [
665#include <sys/types.h>
666#include <sys/socket.h>
667#include <netinet/in.h>
668#include <arpa/inet.h>
669struct mbuf;
670struct rtentry;
671#include <net/if.h>
672#include <netinet/if_ether.h>
673		    ])
674	fi
675	#
676	# Did that succeed?
677	#
678	if test "$ac_cv_have_decl_ether_ntohost" != yes; then
679		#
680		# No, how about <netinet/ether.h>, as on Linux?
681		#
682		AC_CHECK_HEADERS(netinet/ether.h)
683		if test "$ac_cv_header_netinet_ether_h" = yes; then
684			#
685			# We have it - does it declare ether_ntohost()?
686			# Unset ac_cv_have_decl_ether_ntohost so we don't
687			# treat the previous failure as a cached value and
688			# suppress the next test.
689			#
690			unset ac_cv_have_decl_ether_ntohost
691			AC_CHECK_DECL(ether_ntohost,
692			    [
693				AC_DEFINE(NETINET_ETHER_H_DECLARES_ETHER_NTOHOST,,
694				    [Define to 1 if netinet/ether.h declares `ether_ntohost'])
695			    ],,
696			    [
697#include <netinet/ether.h>
698			    ])
699		fi
700	fi
701	#
702	# Is ether_ntohost() declared?
703	#
704	if test "$ac_cv_have_decl_ether_ntohost" != yes; then
705		#
706		# No, we'll have to declare it ourselves.
707		# Do we have "struct ether_addr"?
708		#
709		AC_CHECK_TYPES(struct ether_addr,,,
710		    [
711#include <sys/types.h>
712#include <sys/socket.h>
713#include <netinet/in.h>
714#include <arpa/inet.h>
715struct mbuf;
716struct rtentry;
717#include <net/if.h>
718#include <netinet/if_ether.h>
719		    ])
720		AC_DEFINE(HAVE_DECL_ETHER_NTOHOST, 0,
721		    [Define to 1 if you have the declaration of `ether_ntohost', and to 0 if you
722don't.])
723	else
724		AC_DEFINE(HAVE_DECL_ETHER_NTOHOST, 1,
725		    [Define to 1 if you have the declaration of `ether_ntohost', and to 0 if you
726don't.])
727	fi
728fi
729
730# libdlpi is needed for Solaris 11 and later.
731AC_CHECK_LIB(dlpi, dlpi_walk, LIBS="$LIBS -ldlpi" LDFLAGS="-L/lib $LDFLAGS", ,-L/lib)
732
733dnl portability macros for getaddrinfo/getnameinfo
734dnl
735dnl Check for sa_len
736AC_CHECK_SA_LEN(ac_cv_sockaddr_has_sa_len)
737if test "$ac_cv_sockaddr_has_sa_len" = no; then
738	missing_includes=yes
739fi
740
741#
742# Do we have the new open API?  Check for pcap_create, and assume that,
743# if we do, we also have pcap_activate() and the other new routines
744# introduced in libpcap 1.0.0.
745#
746AC_CHECK_FUNCS(pcap_create)
747if test $ac_cv_func_pcap_create = "yes" ; then
748	#
749	# OK, do we have pcap_set_tstamp_type?  If so, assume we have
750	# pcap_list_tstamp_types and pcap_free_tstamp_types as well.
751	#
752	AC_CHECK_FUNCS(pcap_set_tstamp_type)
753fi
754
755AC_CHECK_FUNCS(pcap_findalldevs pcap_dump_flush pcap_lib_version pcap_setdirection)
756if test $ac_cv_func_pcap_findalldevs = "yes" ; then
757dnl Check for Mac OS X, which may ship pcap.h from 0.6 but libpcap may
758dnl be 0.8; this means that lib has pcap_findalldevs but header doesn't
759dnl have pcap_if_t.
760    savedcppflags="$CPPFLAGS"
761    CPPFLAGS="$CPPFLAGS $V_INCLS"
762    AC_CHECK_TYPES(pcap_if_t, , , [#include <pcap.h>])
763    CPPFLAGS="$savedcppflags"
764fi
765
766if test $ac_cv_func_pcap_lib_version = "no" ; then
767    AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
768    AC_TRY_LINK([],
769       [
770	extern char pcap_version[];
771
772	return (int)pcap_version;
773       ],
774       ac_lbl_cv_pcap_version_defined=yes,
775       ac_lbl_cv_pcap_version_defined=no)
776    if test "$ac_lbl_cv_pcap_version_defined" = yes ; then
777    	AC_MSG_RESULT(yes)
778	AC_DEFINE(HAVE_PCAP_VERSION, 1, [define if libpcap has pcap_version])
779    else
780	AC_MSG_RESULT(no)
781    fi
782fi
783AC_MSG_CHECKING(whether pcap_debug is defined by libpcap)
784AC_TRY_LINK([],
785   [
786	extern int pcap_debug;
787
788	return pcap_debug;
789   ],
790   ac_lbl_cv_pcap_debug_defined=yes,
791   ac_lbl_cv_pcap_debug_defined=no)
792if test "$ac_lbl_cv_pcap_debug_defined" = yes ; then
793	AC_MSG_RESULT(yes)
794	AC_DEFINE(HAVE_PCAP_DEBUG, 1, [define if libpcap has pcap_debug])
795else
796	AC_MSG_RESULT(no)
797	#
798	# OK, what about "yydebug"?
799	#
800	AC_MSG_CHECKING(whether yydebug is defined by libpcap)
801	AC_TRY_LINK([],
802	   [
803		extern int yydebug;
804
805		return yydebug;
806	   ],
807	   ac_lbl_cv_yydebug_defined=yes,
808	   ac_lbl_cv_yydebug_defined=no)
809	if test "$ac_lbl_cv_yydebug_defined" = yes ; then
810		AC_MSG_RESULT(yes)
811		AC_DEFINE(HAVE_YYDEBUG, 1, [define if libpcap has yydebug])
812	else
813		AC_MSG_RESULT(no)
814	fi
815fi
816AC_REPLACE_FUNCS(bpf_dump)	dnl moved to libpcap in 0.6
817
818V_GROUP=0
819if test -f /etc/group -a ! -z "`grep '^wheel:' /etc/group`" ; then
820	V_GROUP=wheel
821fi
822#
823# Assume V7/BSD convention for man pages (file formats in section 5,
824# miscellaneous info in section 7).
825#
826MAN_FILE_FORMATS=5
827MAN_MISC_INFO=7
828case "$host_os" in
829
830aix*)
831	dnl Workaround to enable certain features
832	AC_DEFINE(_SUN,1,[define on AIX to get certain functions])
833	;;
834
835hpux*)
836	#
837	# Use System V conventions for man pages.
838	#
839	MAN_FILE_FORMATS=4
840	MAN_MISC_INFO=5
841	;;
842
843irix*)
844	V_GROUP=sys
845
846	#
847	# Use System V conventions for man pages.
848	#
849	MAN_FILE_FORMATS=4
850	MAN_MISC_INFO=5
851	;;
852
853osf*)
854	V_GROUP=system
855
856	#
857	# Use System V conventions for man pages.
858	#
859	MAN_FILE_FORMATS=4
860	MAN_MISC_INFO=5
861	;;
862
863solaris*)
864	V_GROUP=sys
865
866	#
867	# Use System V conventions for man pages.
868	#
869	MAN_FILE_FORMATS=4
870	MAN_MISC_INFO=5
871	;;
872esac
873
874if test -f /dev/bpf0 ; then
875	V_GROUP=bpf
876fi
877
878#
879# Make sure we have definitions for all the C99 specified-width types
880# (regardless of whether the environment is a C99 environment or not).
881AC_TYPE_INT8_T
882AC_TYPE_INT16_T
883AC_TYPE_INT32_T
884AC_TYPE_INT64_T
885AC_TYPE_UINT8_T
886AC_TYPE_UINT16_T
887AC_TYPE_UINT32_T
888AC_TYPE_UINT64_T
889
890#
891# For now, we're using the old BSD-style u_intXX_t types, so check for
892# them.
893#
894# We should probably migrate to the standard C uintXX_t types.
895#
896AC_CHECK_HEADERS(sys/bitypes.h)
897
898AC_CHECK_TYPE([u_int8_t], ,
899	[AC_DEFINE([u_int8_t], [unsigned char],
900	[Define to `unsigned char' if u_int8_t not defined.])],
901	[AC_INCLUDES_DEFAULT
902#ifdef HAVE_SYS_BITYPES_H
903#include <sys/bitypes.h>
904#endif])
905AC_CHECK_TYPE([u_int16_t], ,
906	[AC_DEFINE([u_int16_t], [unsigned short],
907	[Define to `unsigned short' if u_int16_t not defined.])],
908	[AC_INCLUDES_DEFAULT
909#ifdef HAVE_SYS_BITYPES_H
910#include <sys/bitypes.h>
911#endif])
912AC_CHECK_TYPE([u_int32_t], ,
913	[AC_DEFINE([u_int32_t], [unsigned int],
914	[Define to `unsigned int' if u_int32_t not defined.])],
915	[AC_INCLUDES_DEFAULT
916#ifdef HAVE_SYS_BITYPES_H
917#include <sys/bitypes.h>
918#endif])
919AC_CHECK_TYPE([u_int64_t], ,
920	[AC_DEFINE([u_int64_t], [unsigned long long],
921	[Define to `unsigned long long' if u_int64_t not defined.])],
922	[AC_INCLUDES_DEFAULT
923#ifdef HAVE_SYS_BITYPES_H
924#include <sys/bitypes.h>
925#endif])
926
927#
928# Check for <inttypes.h>
929#
930AC_CHECK_HEADERS(inttypes.h,
931  [
932    #
933    # OK, we have inttypes.h, but does it define all the PRI[doxu]64 macros?
934    # Some systems have an inttypes.h that doesn't define all of them.
935    #
936    AC_MSG_CHECKING([[whether inttypes.h defines the PRI[doxu]64 macros]])
937    AC_COMPILE_IFELSE(
938      [
939	AC_LANG_SOURCE(
940	  [[
941	    #include <inttypes.h>
942	    #include <stdio.h>
943	    #include <sys/types.h>
944	    #ifdef HAVE_SYS_BITYPES_H
945	    #include <sys/bitypes.h>
946	    #endif
947
948	    main()
949	    {
950	      printf("%" PRId64 "\n", (u_int64_t)1);
951	      printf("%" PRIo64 "\n", (u_int64_t)1);
952	      printf("%" PRIx64 "\n", (u_int64_t)1);
953	      printf("%" PRIu64 "\n", (u_int64_t)1);
954	    }
955	  ]])
956      ],
957      [
958	AC_MSG_RESULT(yes)
959	ac_lbl_inttypes_h_defines_formats=yes
960      ],
961      [
962	AC_MSG_RESULT(no)
963	ac_lbl_inttypes_h_defines_formats=no
964      ])
965  ],
966  [
967    #
968    # We don't have inttypes.h, so it obviously can't define those
969    # macros.
970    #
971    ac_lbl_inttypes_h_defines_formats=no
972  ])
973if test "$ac_lbl_inttypes_h_defines_formats" = no; then
974  AC_LBL_CHECK_64BIT_FORMAT(l,
975    [
976      AC_LBL_CHECK_64BIT_FORMAT(ll,
977        [
978          AC_LBL_CHECK_64BIT_FORMAT(L,
979	    [
980	      AC_LBL_CHECK_64BIT_FORMAT(q,
981	        [
982	          AC_MSG_ERROR([neither %llx nor %Lx nor %qx worked on a 64-bit integer])
983	        ])
984	    ])
985	])
986    ])
987fi
988
989#
990# Check for some headers introduced in later versions of libpcap
991# and used by some printers.
992#
993# Those headers use the {u_}intN_t types, so we must do this after
994# we check for what's needed to get them defined.
995#
996savedcppflags="$CPPFLAGS"
997CPPFLAGS="$CPPFLAGS $V_INCLS"
998AC_CHECK_HEADERS(pcap/bluetooth.h,,,[#include "tcpdump-stdinc.h"])
999AC_CHECK_HEADERS(pcap/nflog.h,,,[#include "tcpdump-stdinc.h"])
1000AC_CHECK_HEADERS(pcap/usb.h,,,[#include "tcpdump-stdinc.h"])
1001CPPFLAGS="$savedcppflags"
1002
1003AC_PROG_RANLIB
1004
1005AC_LBL_DEVEL(V_CCOPT)
1006
1007AC_LBL_SOCKADDR_SA_LEN
1008
1009AC_LBL_UNALIGNED_ACCESS
1010
1011AC_VAR_H_ERRNO
1012
1013# Check for OpenSSL libcrypto
1014AC_MSG_CHECKING(whether to use OpenSSL libcrypto)
1015# Specify location for both includes and libraries.
1016want_libcrypto=ifavailable
1017AC_ARG_WITH(crypto,
1018    AS_HELP_STRING([--with-crypto],
1019		   [use OpenSSL libcrypto @<:@default=yes, if available@:>@]),
1020[
1021	if test $withval = no
1022	then
1023		want_libcrypto=no
1024		AC_MSG_RESULT(no)
1025	elif test $withval = yes
1026	then
1027		want_libcrypto=yes
1028		AC_MSG_RESULT(yes)
1029	fi
1030],[
1031	#
1032	# Use libcrypto if it's present, otherwise don't.
1033	#
1034	want_libcrypto=ifavailable
1035	AC_MSG_RESULT([yes, if available])
1036])
1037if test "$want_libcrypto" != "no"; then
1038	AC_CHECK_LIB(crypto, DES_cbc_encrypt)
1039	AC_CHECK_HEADERS(openssl/evp.h)
1040fi
1041
1042dnl
1043dnl set additional include path if necessary
1044if test "$missing_includes" = "yes"; then
1045	CPPFLAGS="$CPPFLAGS -I$srcdir/missing"
1046	V_INCLS="$V_INCLS -I$srcdir/missing"
1047fi
1048
1049AC_SUBST(V_CCOPT)
1050AC_SUBST(V_DEFS)
1051AC_SUBST(V_GROUP)
1052AC_SUBST(V_INCLS)
1053AC_SUBST(V_PCAPDEP)
1054AC_SUBST(LOCALSRC)
1055AC_SUBST(MAN_FILE_FORMATS)
1056AC_SUBST(MAN_MISC_INFO)
1057
1058AC_PROG_INSTALL
1059
1060AC_CONFIG_HEADER(config.h)
1061
1062AC_OUTPUT_COMMANDS([if test -f .devel; then
1063	echo timestamp > stamp-h
1064	cat Makefile-devel-adds >> Makefile
1065	make depend
1066fi])
1067AC_OUTPUT(Makefile tcpdump.1)
1068exit 0
1069