xref: /freebsd/contrib/libpcap/configure.ac (revision d8a0fe102c0cfdfcd5b818f850eff09d8536c9bc)
1dnl
2dnl Copyright (c) 1994, 1995, 1996, 1997
3dnl	The Regents of the University of California.  All rights reserved.
4dnl
5dnl Process this file with autoconf to produce a configure script.
6dnl
7
8#
9# See
10#
11#	http://ftp.gnu.org/gnu/config/README
12#
13# for the URLs to use to fetch new versions of config.guess and
14# config.sub.
15#
16
17AC_PREREQ(2.61)
18AC_INIT(pcap.c)
19
20AC_CANONICAL_SYSTEM
21
22AC_LBL_C_INIT_BEFORE_CC(V_CCOPT, V_INCLS)
23AC_PROG_CC
24AC_LBL_C_INIT(V_CCOPT, V_INCLS)
25AC_LBL_SHLIBS_INIT
26AC_LBL_C_INLINE
27AC_C___ATTRIBUTE__
28if test "$ac_cv___attribute__" = "yes"; then
29	AC_C___ATTRIBUTE___UNUSED
30	AC_C___ATTRIBUTE___FORMAT
31fi
32
33AC_CHECK_HEADERS(sys/bitypes.h)
34
35AC_CHECK_TYPE([int8_t], ,
36	[AC_DEFINE([int8_t], [signed char],
37	[Define to `signed char' if int8_t not defined.])],
38	[AC_INCLUDES_DEFAULT
39#ifdef HAVE_SYS_BITYPES_H
40#include <sys/bitypes.h>
41#endif])
42AC_CHECK_TYPE([u_int8_t], ,
43	[AC_DEFINE([u_int8_t], [unsigned char],
44	[Define to `unsigned char' if u_int8_t not defined.])],
45	[AC_INCLUDES_DEFAULT
46#ifdef HAVE_SYS_BITYPES_H
47#include <sys/bitypes.h>
48#endif])
49AC_CHECK_TYPE([int16_t], ,
50	[AC_DEFINE([int16_t], [short],
51	[Define to `short' if int16_t not defined.])]
52	[AC_INCLUDES_DEFAULT
53#ifdef HAVE_SYS_BITYPES_H
54#include <sys/bitypes.h>
55#endif])
56AC_CHECK_TYPE([u_int16_t], ,
57	[AC_DEFINE([u_int16_t], [unsigned short],
58	[Define to `unsigned short' if u_int16_t not defined.])],
59	[AC_INCLUDES_DEFAULT
60#ifdef HAVE_SYS_BITYPES_H
61#include <sys/bitypes.h>
62#endif])
63AC_CHECK_TYPE([int32_t], ,
64	[AC_DEFINE([int32_t], [int],
65	[Define to `int' if int32_t not defined.])],
66	[AC_INCLUDES_DEFAULT
67#ifdef HAVE_SYS_BITYPES_H
68#include <sys/bitypes.h>
69#endif])
70AC_CHECK_TYPE([u_int32_t], ,
71	[AC_DEFINE([u_int32_t], [unsigned int],
72	[Define to `unsigned int' if u_int32_t not defined.])],
73	[AC_INCLUDES_DEFAULT
74#ifdef HAVE_SYS_BITYPES_H
75#include <sys/bitypes.h>
76#endif])
77AC_CHECK_TYPE([int64_t], ,
78	[AC_DEFINE([int64_t], [long long],
79	[Define to `long long' if int64_t not defined.])],
80	[AC_INCLUDES_DEFAULT
81#ifdef HAVE_SYS_BITYPES_H
82#include <sys/bitypes.h>
83#endif])
84AC_CHECK_TYPE([u_int64_t], ,
85	[AC_DEFINE([u_int64_t], [unsigned long long],
86	[Define to `unsigned long long' if u_int64_t not defined.])],
87	[AC_INCLUDES_DEFAULT
88#ifdef HAVE_SYS_BITYPES_H
89#include <sys/bitypes.h>
90#endif])
91
92#
93# Try to arrange for large file support.
94#
95AC_SYS_LARGEFILE
96AC_FUNC_FSEEKO
97
98dnl
99dnl Even if <net/bpf.h> were, on all OSes that support BPF, fixed to
100dnl include <sys/ioccom.h>, and we were to drop support for older
101dnl releases without that fix, so that pcap-bpf.c doesn't need to
102dnl include <sys/ioccom.h>, the test program in "AC_LBL_FIXINCLUDES"
103dnl in "aclocal.m4" uses it, so we would still have to test for it
104dnl and set "HAVE_SYS_IOCCOM_H" if we have it, otherwise
105dnl "AC_LBL_FIXINCLUDES" wouldn't work on some platforms such as Solaris.
106dnl
107AC_CHECK_HEADERS(sys/ioccom.h sys/select.h sys/sockio.h limits.h)
108AC_CHECK_HEADERS(linux/types.h)
109AC_CHECK_HEADERS(linux/if_packet.h netpacket/packet.h netpacket/if_packet.h)
110AC_CHECK_HEADERS(net/pfvar.h, , , [#include <sys/types.h>
111#include <sys/socket.h>
112#include <net/if.h>])
113if test "$ac_cv_header_net_pfvar_h" = yes; then
114	#
115	# Check for various PF actions.
116	#
117	AC_MSG_CHECKING(whether net/pfvar.h defines PF_NAT through PF_NORDR)
118	AC_TRY_COMPILE(
119	    [#include <sys/types.h>
120	    #include <sys/socket.h>
121	    #include <net/if.h>
122	    #include <net/pfvar.h>],
123	    [return PF_NAT+PF_NONAT+PF_BINAT+PF_NOBINAT+PF_RDR+PF_NORDR;],
124	    [
125		AC_MSG_RESULT(yes)
126		AC_DEFINE(HAVE_PF_NAT_THROUGH_PF_NORDR, 1,
127		    [define if net/pfvar.h defines PF_NAT through PF_NORDR])
128	    ],
129	    AC_MSG_RESULT(no))
130fi
131AC_CHECK_HEADERS(netinet/if_ether.h, , , [#include <sys/types.h>
132#include <sys/socket.h>])
133if test "$ac_cv_header_netinet_if_ether_h" != yes; then
134	#
135	# The simple test didn't work.
136	# Do we need to include <net/if.h> first?
137	# Unset ac_cv_header_netinet_if_ether_h so we don't
138	# treat the previous failure as a cached value and
139	# suppress the next test.
140	#
141	AC_MSG_NOTICE([Rechecking with some additional includes])
142	unset ac_cv_header_netinet_if_ether_h
143	AC_CHECK_HEADERS(netinet/if_ether.h, , , [#include <sys/types.h>
144#include <sys/socket.h>
145#include <netinet/in.h>
146struct mbuf;
147struct rtentry;
148#include <net/if.h>])
149fi
150
151case "$host_os" in
152linux*|uclinux*)
153	AC_CHECK_HEADERS(linux/sockios.h linux/if_bonding.h,,,
154	[
155#include <sys/socket.h>
156#include <linux/if.h>
157	])
158	;;
159esac
160
161AC_LBL_FIXINCLUDES
162
163AC_CHECK_FUNCS(strerror strlcpy)
164
165needsnprintf=no
166AC_CHECK_FUNCS(vsnprintf snprintf,,
167	[needsnprintf=yes])
168if test $needsnprintf = yes; then
169	AC_LIBOBJ([snprintf])
170fi
171
172needstrtok_r=no
173AC_CHECK_FUNCS(strtok_r,,
174	[needstrtok_r=yes])
175if test $needstrtok_r = yes; then
176	AC_LIBOBJ([strtok_r])
177fi
178
179#
180# Do this before checking for ether_hostton(), as it's a
181# "gethostbyname() -ish function".
182#
183AC_LBL_LIBRARY_NET
184
185#
186# You are in a twisty little maze of UN*Xes, all different.
187# Some might not have ether_hostton().
188# Some might have it, but not declare it in any header file.
189# Some might have it, but declare it in <netinet/if_ether.h>.
190# Some might have it, but declare it in <netinet/ether.h>
191# (And some might have it but document it as something declared in
192# <netinet/ethernet.h>, although <netinet/if_ether.h> appears to work.)
193#
194# Before you is a C compiler.
195#
196AC_CHECK_FUNCS(ether_hostton)
197if test "$ac_cv_func_ether_hostton" = yes; then
198	#
199	# OK, we have ether_hostton().  Do we have <netinet/if_ether.h>?
200	#
201	if test "$ac_cv_header_netinet_if_ether_h" = yes; then
202		#
203		# Yes.  Does it declare ether_hostton()?
204		#
205		AC_CHECK_DECL(ether_hostton,
206		    [
207			AC_DEFINE(NETINET_IF_ETHER_H_DECLARES_ETHER_HOSTTON,,
208			    [Define to 1 if netinet/if_ether.h declares `ether_hostton'])
209		    ],,
210		    [
211#include <sys/types.h>
212#include <sys/socket.h>
213#include <netinet/in.h>
214#include <arpa/inet.h>
215struct mbuf;
216struct rtentry;
217#include <net/if.h>
218#include <netinet/if_ether.h>
219		    ])
220	fi
221	#
222	# Did that succeed?
223	#
224	if test "$ac_cv_have_decl_ether_hostton" != yes; then
225		#
226		# No, how about <netinet/ether.h>, as on Linux?
227		#
228		AC_CHECK_HEADERS(netinet/ether.h)
229		if test "$ac_cv_header_netinet_ether_h" = yes; then
230			#
231			# We have it - does it declare ether_hostton()?
232			# Unset ac_cv_have_decl_ether_hostton so we don't
233			# treat the previous failure as a cached value and
234			# suppress the next test.
235			#
236			unset ac_cv_have_decl_ether_hostton
237			AC_CHECK_DECL(ether_hostton,
238			    [
239				AC_DEFINE(NETINET_ETHER_H_DECLARES_ETHER_HOSTTON,,
240				    [Define to 1 if netinet/ether.h declares `ether_hostton'])
241			    ],,
242			    [
243#include <netinet/ether.h>
244			    ])
245		fi
246	fi
247	#
248	# Is ether_hostton() declared?
249	#
250	if test "$ac_cv_have_decl_ether_hostton" != yes; then
251		#
252		# No, we'll have to declare it ourselves.
253		# Do we have "struct ether_addr"?
254		#
255		AC_CHECK_TYPES(struct ether_addr,,,
256		    [
257#include <sys/types.h>
258#include <sys/socket.h>
259#include <netinet/in.h>
260#include <arpa/inet.h>
261struct mbuf;
262struct rtentry;
263#include <net/if.h>
264#include <netinet/if_ether.h>
265		    ])
266		AC_DEFINE(HAVE_DECL_ETHER_HOSTTON, 0,
267		    [Define to 1 if you have the declaration of `ether_hostton', and to 0 if you
268don't.])
269	else
270		AC_DEFINE(HAVE_DECL_ETHER_HOSTTON, 1,
271		    [Define to 1 if you have the declaration of `ether_hostton', and to 0 if you
272don't.])
273	fi
274fi
275
276dnl to pacify those who hate protochain insn
277AC_MSG_CHECKING(if --disable-protochain option is specified)
278AC_ARG_ENABLE(protochain,
279AC_HELP_STRING([--disable-protochain],[disable \"protochain\" insn]))
280case "x$enable_protochain" in
281xyes)	enable_protochain=enabled	;;
282xno)	enable_protochain=disabled	;;
283x)	enable_protochain=enabled	;;
284esac
285
286if test "$enable_protochain" = "disabled"; then
287	AC_DEFINE(NO_PROTOCHAIN,1,[do not use protochain])
288fi
289AC_MSG_RESULT(${enable_protochain})
290
291#
292# valgrindtest directly uses the native capture mechanism, but
293# only tests with BPF and PF_PACKET sockets; only enable it if
294# we have BPF or PF_PACKET sockets.
295#
296VALGRINDTEST=
297
298#
299# SITA support is mutually exclusive with native capture support;
300# "--with-sita" selects SITA support.
301#
302AC_ARG_WITH(sita,
303AC_HELP_STRING([--with-sita],[include SITA support]),
304[
305	if test ! "x$withval" = "xno" ; then
306		AC_DEFINE(SITA,1,[include ACN support])
307		AC_MSG_NOTICE(Enabling SITA ACN support)
308		V_PCAP=sita
309	fi
310],
311[
312dnl
313dnl Not all versions of test support -c (character special) but it's a
314dnl better way of testing since the device might be protected. So we
315dnl check in our normal order using -r and then check the for the /dev
316dnl guys again using -c.
317dnl
318dnl XXX This could be done for cross-compiling, but for now it's not.
319dnl
320if test -z "$with_pcap" && test "$cross_compiling" = yes; then
321	AC_MSG_ERROR(pcap type not determined when cross-compiling; use --with-pcap=...)
322fi
323AC_ARG_WITH(pcap,
324AC_HELP_STRING([--with-pcap=TYPE],[use packet capture TYPE]))
325AC_MSG_CHECKING(packet capture type)
326if test ! -z "$with_pcap" ; then
327	V_PCAP="$withval"
328elif test -r /dev/bpf -o -h /dev/bpf ; then
329	#
330	# Cloning BPF device.
331	#
332	V_PCAP=bpf
333	AC_DEFINE(HAVE_CLONING_BPF,1,[define if you have a cloning BPF device])
334
335	#
336	# We have BPF, so build valgrindtest with "make test".
337	#
338	VALGRINDTEST=valgrindtest
339elif test -r /dev/bpf0 ; then
340	V_PCAP=bpf
341
342	#
343	# We have BPF, so build valgrindtest with "make test".
344	#
345	VALGRINDTEST=valgrindtest
346elif test -r /usr/include/net/pfilt.h ; then
347	V_PCAP=pf
348elif test -r /dev/enet ; then
349	V_PCAP=enet
350elif test -r /dev/nit ; then
351	V_PCAP=snit
352elif test -r /usr/include/sys/net/nit.h ; then
353	V_PCAP=nit
354elif test -r /usr/include/linux/socket.h ; then
355	V_PCAP=linux
356
357	#
358	# XXX - this won't work with older kernels that have SOCK_PACKET
359	# sockets but not PF_PACKET sockets.
360	#
361	VALGRINDTEST=valgrindtest
362elif test -r /usr/include/net/raw.h ; then
363	V_PCAP=snoop
364elif test -r /usr/include/odmi.h ; then
365	#
366	# On AIX, the BPF devices might not yet be present - they're
367	# created the first time libpcap runs after booting.
368	# We check for odmi.h instead.
369	#
370	V_PCAP=bpf
371elif test -c /dev/bpf0 ; then		# check again in case not readable
372	V_PCAP=bpf
373
374	#
375	# We have BPF, so build valgrindtest with "make test".
376	#
377	VALGRINDTEST=valgrindtest
378elif test -r /usr/include/sys/dlpi.h ; then
379	V_PCAP=dlpi
380elif test -c /dev/enet ; then		# check again in case not readable
381	V_PCAP=enet
382elif test -c /dev/nit ; then		# check again in case not readable
383	V_PCAP=snit
384else
385	V_PCAP=null
386fi
387AC_MSG_RESULT($V_PCAP)
388AC_SUBST(VALGRINDTEST)
389
390#
391# Do capture-mechanism-dependent tests.
392#
393case "$V_PCAP" in
394dlpi)
395	#
396	# Needed for common functions used by pcap-[dlpi,libdlpi].c
397	#
398 	SSRC="dlpisubs.c"
399
400	#
401	# Checks for some header files.
402	#
403	AC_CHECK_HEADERS(sys/bufmod.h sys/dlpi_ext.h)
404
405	#
406	# Checks to see if Solaris has the public libdlpi(3LIB) library.
407	# Note: The existence of /usr/include/libdlpi.h does not mean it is the
408	# public libdlpi(3LIB) version. Before libdlpi was made public, a
409	# private version also existed, which did not have the same APIs.
410	# Due to a gcc bug, the default search path for 32-bit libraries does
411	# not include /lib, we add it explicitly here.
412	# [http://bugs.opensolaris.org/view_bug.do?bug_id=6619485].
413	# Also, due to the bug above applications that link to libpcap with
414	# libdlpi will have to add "-L/lib" option to "configure".
415	#
416	saved_ldflags=$LDFLAGS
417	LDFLAGS="$LIBS -L/lib"
418	AC_CHECK_LIB(dlpi, dlpi_walk,
419		[
420			LIBS="-ldlpi $LIBS"
421			V_PCAP=libdlpi
422			AC_DEFINE(HAVE_LIBDLPI,1,[if libdlpi exists])
423		],
424		V_PCAP=dlpi)
425	LDFLAGS=$saved_ldflags
426
427	#
428	# Checks whether <sys/dlpi.h> is usable, to catch weird SCO
429	# versions of DLPI.
430	#
431	AC_MSG_CHECKING(whether <sys/dlpi.h> is usable)
432	AC_CACHE_VAL(ac_cv_sys_dlpi_usable,
433		AC_TRY_COMPILE(
434		    [
435			#include <sys/types.h>
436			#include <sys/time.h>
437			#include <sys/dlpi.h>
438		    ],
439		    [int i = DL_PROMISC_PHYS;],
440		    ac_cv_sys_dlpi_usable=yes,
441		    ac_cv_sys_dlpi_usable=no))
442	AC_MSG_RESULT($ac_cv_sys_dlpi_usable)
443	if test $ac_cv_sys_dlpi_usable = no ; then
444		AC_MSG_ERROR(<sys/dlpi.h> is not usable on this system; it probably has a non-standard DLPI)
445	fi
446
447	#
448	# Check whether we have a /dev/dlpi device or have multiple devices.
449	#
450	AC_MSG_CHECKING(for /dev/dlpi device)
451	if test -c /dev/dlpi ; then
452		AC_MSG_RESULT(yes)
453		AC_DEFINE(HAVE_DEV_DLPI, 1, [define if you have a /dev/dlpi])
454	else
455		AC_MSG_RESULT(no)
456		dir="/dev/dlpi"
457		AC_MSG_CHECKING(for $dir directory)
458		if test -d $dir ; then
459			AC_MSG_RESULT(yes)
460			AC_DEFINE_UNQUOTED(PCAP_DEV_PREFIX, "$dir", [/dev/dlpi directory])
461		else
462			AC_MSG_RESULT(no)
463		fi
464	fi
465
466	#
467	# This check is for Solaris with DLPI support for passive modes.
468	# See dlpi(7P) for more details.
469	#
470	AC_LBL_DL_PASSIVE_REQ_T
471	;;
472
473linux)
474	#
475	# Do we have the wireless extensions?
476	#
477	AC_CHECK_HEADERS(linux/wireless.h, [], [],
478	[
479#include <sys/socket.h>
480#include <linux/if.h>
481#include <linux/types.h>
482	])
483
484	#
485	# Do we have libnl?
486	#
487	AC_ARG_WITH(libnl,
488	AC_HELP_STRING([--without-libnl],[disable libnl support @<:@default=yes, on Linux, if present@:>@]),
489		with_libnl=$withval,,)
490
491	if test x$with_libnl != xno ; then
492		have_any_nl="no"
493
494                incdir=-I/usr/include/libnl3
495                libnldir=
496                if test x$withval != x ; then
497                  libnldir=-L${withval}/lib/.libs
498                  incdir=-I${withval}/include
499                fi
500
501		#
502		# Try libnl 3.x first.
503		#
504		AC_CHECK_LIB(nl-3, nl_socket_alloc,
505		[
506			#
507			# Yes, we have libnl 3.x.
508			#
509			LIBS="${libnldir} -lnl-genl-3 -lnl-3 $LIBS"
510			AC_DEFINE(HAVE_LIBNL,1,[if libnl exists])
511			AC_DEFINE(HAVE_LIBNL_3_x,1,[if libnl exists and is version 3.x])
512			AC_DEFINE(HAVE_LIBNL_NLE,1,[libnl has NLE_FAILURE])
513			AC_DEFINE(HAVE_LIBNL_SOCKETS,1,[libnl has new-style socket api])
514			V_INCLS="$V_INCLS ${incdir}"
515			have_any_nl="yes"
516		],[], ${incdir} ${libnldir} -lnl-genl-3 -lnl-3 )
517
518		if test x$have_any_nl = xno ; then
519			#
520			# Try libnl 2.x
521			#
522			AC_CHECK_LIB(nl, nl_socket_alloc,
523			[
524				#
525				# Yes, we have libnl 2.x.
526				#
527				LIBS="${libnldir} -lnl-genl -lnl $LIBS"
528				AC_DEFINE(HAVE_LIBNL,1,[if libnl exists])
529				AC_DEFINE(HAVE_LIBNL_2_x,1,[if libnl exists and is version 2.x])
530				AC_DEFINE(HAVE_LIBNL_NLE,1,[libnl has NLE_FAILURE])
531				AC_DEFINE(HAVE_LIBNL_SOCKETS,1,[libnl has new-style socket api])
532				have_any_nl="yes"
533			])
534		fi
535
536		if test x$have_any_nl = xno ; then
537			#
538			# No, we don't; do we have libnl 1.x?
539			#
540			AC_CHECK_LIB(nl, nl_handle_alloc,
541			[
542				#
543				# Yes.
544				#
545				LIBS="${libnldir} -lnl $LIBS"
546				AC_DEFINE(HAVE_LIBNL,1,[if libnl exists])
547				have_any_nl="yes"
548			])
549		fi
550
551		if test x$have_any_nl = xno ; then
552			#
553			# No, we don't have libnl at all.
554			#
555			if test x$with_libnl = xyes ; then
556				AC_MSG_ERROR([libnl support requested but libnl not found])
557			fi
558		fi
559	fi
560
561	AC_CHECK_HEADERS(linux/ethtool.h,,,
562	    [
563AC_INCLUDES_DEFAULT
564#include <linux/types.h>
565	    ])
566	AC_LBL_TPACKET_STATS
567	AC_LBL_LINUX_TPACKET_AUXDATA_TP_VLAN_TCI
568	;;
569
570bpf)
571	#
572	# Check whether we have the *BSD-style ioctls.
573	#
574	AC_CHECK_HEADERS(net/if_media.h)
575
576	AC_MSG_CHECKING(whether the system supports zerocopy BPF)
577	AC_TRY_COMPILE(
578	    [#include <sys/socket.h>
579	    #include <sys/ioctl.h>
580	    #include <net/if.h>
581	    #include <net/bpf.h>],
582	    [return (BIOCROTZBUF + BPF_BUFMODE_ZBUF);],
583	    [
584		AC_MSG_RESULT(yes)
585		AC_DEFINE(HAVE_ZEROCOPY_BPF, 1,
586		[define if the system supports zerocopy BPF])
587	    ],
588	    AC_MSG_RESULT(no))
589
590	    #
591	    # Check whether we have struct BPF_TIMEVAL.
592	    #
593	    AC_CHECK_TYPES(struct BPF_TIMEVAL,,,
594		[
595#include <sys/types.h>
596#include <sys/ioctl.h>
597#ifdef HAVE_SYS_IOCCOM_H
598#include <sys/ioccom.h>
599#endif
600#include <net/bpf.h>
601		    ])
602	;;
603
604dag)
605	#
606	# --with-pcap=dag is the only way to get here, and it means
607	# "DAG support but nothing else"
608	#
609	V_DEFS="$V_DEFS -DDAG_ONLY"
610	xxx_only=yes
611	;;
612
613septel)
614	#
615	# --with-pcap=septel is the only way to get here, and it means
616	# "Septel support but nothing else"
617	#
618	V_DEFS="$V_DEFS -DSEPTEL_ONLY"
619	xxx_only=yes
620	;;
621
622snf)
623	#
624	# --with-pcap=snf is the only way to get here, and it means
625	# "SNF support but nothing else"
626	#
627	V_DEFS="$V_DEFS -DSNF_ONLY"
628	xxx_only=yes
629	;;
630
631null)
632	AC_MSG_WARN(cannot determine packet capture interface)
633	AC_MSG_WARN((see the INSTALL doc for more info))
634	;;
635esac
636
637dnl
638dnl Now figure out how we get a list of interfaces and addresses,
639dnl if we support capturing.  Don't bother if we don't support
640dnl capturing.
641dnl
642if test "$V_PCAP" != null
643then
644	AC_CHECK_FUNC(getifaddrs,[
645		#
646		# We have "getifaddrs()"; make sure we have <ifaddrs.h>
647		# as well, just in case some platform is really weird.
648		#
649		AC_CHECK_HEADER(ifaddrs.h,[
650		    #
651		    # We have the header, so we use "getifaddrs()" to
652		    # get the list of interfaces.
653		    #
654		    V_FINDALLDEVS=fad-getad.c
655		],[
656		    #
657		    # We don't have the header - give up.
658		    # XXX - we could also fall back on some other
659		    # mechanism, but, for now, this'll catch this
660		    # problem so that we can at least try to figure
661		    # out something to do on systems with "getifaddrs()"
662		    # but without "ifaddrs.h", if there is something
663		    # we can do on those systems.
664		    #
665		    AC_MSG_ERROR([Your system has getifaddrs() but doesn't have a usable <ifaddrs.h>.])
666		])
667	],[
668		#
669		# Well, we don't have "getifaddrs()", so we have to use
670		# some other mechanism; determine what that mechanism is.
671		#
672		# The first thing we use is the type of capture mechanism,
673		# which is somewhat of a proxy for the OS we're using.
674		#
675		case "$V_PCAP" in
676
677		dlpi|libdlpi)
678			#
679			# This might be Solaris 8 or later, with
680			# SIOCGLIFCONF, or it might be some other OS
681			# or some older version of Solaris, with
682			# just SIOCGIFCONF.
683			#
684			AC_MSG_CHECKING(whether we have SIOCGLIFCONF)
685			AC_CACHE_VAL(ac_cv_lbl_have_siocglifconf,
686			    AC_TRY_COMPILE(
687				[#include <sys/param.h>
688				#include <sys/file.h>
689				#include <sys/ioctl.h>
690				#include <sys/socket.h>
691				#include <sys/sockio.h>],
692				[ioctl(0, SIOCGLIFCONF, (char *)0);],
693				ac_cv_lbl_have_siocglifconf=yes,
694				ac_cv_lbl_have_siocglifconf=no))
695			AC_MSG_RESULT($ac_cv_lbl_have_siocglifconf)
696			if test $ac_cv_lbl_have_siocglifconf = yes ; then
697				V_FINDALLDEVS=fad-glifc.c
698			else
699				V_FINDALLDEVS=fad-gifc.c
700			fi
701			;;
702
703		*)
704			#
705			# Assume we just have SIOCGIFCONF.
706			# (XXX - on at least later Linux kernels, there's
707			# another mechanism, and we should be using that
708			# instead.)
709			#
710			V_FINDALLDEVS=fad-gifc.c
711			;;
712		esac])
713fi
714])
715
716AC_MSG_CHECKING(for socklen_t)
717AC_TRY_COMPILE([
718	#include <sys/types.h>
719	#include <sys/socket.h>
720	],
721	[ socklen_t x; ],
722	have_socklen_t=yes,
723	have_socklen_t=no)
724if test "x$have_socklen_t" = "xyes"; then
725	AC_DEFINE(HAVE_SOCKLEN_T, 1, [define if socklen_t is defined])
726fi
727AC_MSG_RESULT($have_socklen_t)
728
729AC_ARG_ENABLE(ipv6,
730AC_HELP_STRING([--enable-ipv6],[build IPv6-capable version @<:@default=yes, if getaddrinfo available@:>@]),
731    [],
732    [enable_ipv6=ifavailable])
733if test "$enable_ipv6" != "no"; then
734	AC_CHECK_FUNC(getaddrinfo,
735	    [
736		AC_DEFINE(INET6,1,[IPv6])
737	    ],
738	    [
739		if test "$enable_ipv6" != "ifavailable"; then
740			AC_MSG_FAILURE([--enable-ipv6 was given, but getaddrinfo isn't available])
741		fi
742	    ])
743fi
744
745AC_MSG_CHECKING(whether to build optimizer debugging code)
746AC_ARG_ENABLE(optimizer-dbg,
747AC_HELP_STRING([--enable-optimizer-dbg],[build optimizer debugging code]))
748if test "$enable_optimizer_dbg" = "yes"; then
749	AC_DEFINE(BDEBUG,1,[Enable optimizer debugging])
750fi
751AC_MSG_RESULT(${enable_optimizer_dbg-no})
752
753AC_MSG_CHECKING(whether to build parser debugging code)
754AC_ARG_ENABLE(yydebug,
755AC_HELP_STRING([--enable-yydebug],[build parser debugging code]))
756if test "$enable_yydebug" = "yes"; then
757	AC_DEFINE(YYDEBUG,1,[Enable parser debugging])
758fi
759AC_MSG_RESULT(${enable_yydebug-no})
760
761# Check for Endace DAG card support.
762AC_ARG_WITH([dag],
763AC_HELP_STRING([--with-dag@<:@=DIR@:>@],[include Endace DAG support (located in directory DIR, if supplied).  @<:@default=yes, if present@:>@]),
764[
765	if test "$withval" = no
766	then
767		# User doesn't want DAG support.
768		want_dag=no
769	elif test "$withval" = yes
770	then
771		# User wants DAG support but hasn't specified a directory.
772		want_dag=yes
773	else
774		# User wants DAG support and has specified a directory, so use the provided value.
775		want_dag=yes
776		dag_root=$withval
777	fi
778],[
779	if test "$V_PCAP" = dag; then
780		# User requested DAG-only libpcap, so we'd better have
781		# the DAG API.
782		want_dag=yes
783	elif test "xxx_only" = yes; then
784		# User requested something-else-only pcap, so they don't
785		# want DAG support.
786		want_dag=no
787	else
788		#
789		# Use DAG API if present, otherwise don't
790		#
791		want_dag=ifpresent
792	fi
793])
794
795AC_ARG_WITH([dag-includes],
796AC_HELP_STRING([--with-dag-includes=IDIR],[Endace DAG include directory, if not DIR/include]),
797[
798	# User wants DAG support and has specified a header directory, so use the provided value.
799	want_dag=yes
800	dag_include_dir=$withval
801],[])
802
803AC_ARG_WITH([dag-libraries],
804AC_HELP_STRING([--with-dag-libraries=LDIR],[Endace DAG library directory, if not DIR/lib]),
805[
806	# User wants DAG support and has specified a library directory, so use the provided value.
807	want_dag=yes
808	dag_lib_dir=$withval
809],[])
810
811ac_cv_lbl_dag_api=no
812if test "$want_dag" != no; then
813
814	AC_MSG_CHECKING([whether we have DAG API headers])
815
816	# If necessary, set default paths for DAG API headers and libraries.
817	if test -z "$dag_root"; then
818		dag_root=/usr/local
819	fi
820
821	if test -z "$dag_include_dir"; then
822		dag_include_dir="$dag_root/include"
823	fi
824
825	if test -z "$dag_lib_dir"; then
826		dag_lib_dir="$dag_root/lib"
827	fi
828
829	if test -z "$dag_tools_dir"; then
830		dag_tools_dir="$dag_root/tools"
831	fi
832
833	if test -r $dag_include_dir/dagapi.h; then
834		ac_cv_lbl_dag_api=yes
835	fi
836
837	if test "$ac_cv_lbl_dag_api" = yes; then
838		AC_MSG_RESULT([yes ($dag_include_dir)])
839
840		V_INCLS="$V_INCLS -I$dag_include_dir"
841
842		if test $V_PCAP != dag ; then
843			 SSRC="$SSRC pcap-dag.c"
844		fi
845
846		# See if we can find a general version string.
847		# Don't need to save and restore LIBS to prevent -ldag being
848		# included if there's a found-action (arg 3).
849		saved_ldflags=$LDFLAGS
850		LDFLAGS="-L$dag_lib_dir"
851		AC_CHECK_LIB([dag], [dag_attach_stream], [dag_streams="1"], [dag_streams="0"])
852		AC_CHECK_LIB([dag],[dag_get_erf_types], [
853			AC_DEFINE(HAVE_DAG_GET_ERF_TYPES, 1, [define if you have dag_get_erf_types()])])
854		AC_CHECK_LIB([dag],[dag_get_stream_erf_types], [
855			AC_DEFINE(HAVE_DAG_GET_STREAM_ERF_TYPES, 1, [define if you have dag_get_stream_erf_types()])])
856
857		LDFLAGS=$saved_ldflags
858
859		if test "$dag_streams" = 1; then
860			AC_DEFINE(HAVE_DAG_STREAMS_API, 1, [define if you have streams capable DAG API])
861			LIBS="$LIBS -ldag"
862			LDFLAGS="$LDFLAGS -L$dag_lib_dir"
863
864			AC_CHECK_LIB([vdag],[vdag_set_device_info], [ac_dag_have_vdag="1"], [ac_dag_have_vdag="0"])
865			if test "$ac_dag_have_vdag" = 1; then
866				AC_DEFINE(HAVE_DAG_VDAG, 1, [define if you have vdag_set_device_info()])
867				LIBS="$LIBS -lpthread"
868			fi
869		fi
870
871		AC_DEFINE(HAVE_DAG_API, 1, [define if you have the DAG API])
872	else
873		AC_MSG_RESULT(no)
874
875		if test "$V_PCAP" = dag; then
876			# User requested "dag" capture type but we couldn't
877			# find the DAG API support.
878			AC_MSG_ERROR([DAG support requested with --with-pcap=dag, but the DAG headers weren't found at $dag_include_dir: make sure the DAG support is installed, specify a different path or paths if necessary, or don't request DAG support])
879		fi
880
881		if test "$want_dag" = yes; then
882	        	# User wanted DAG support but we couldn't find it.
883			AC_MSG_ERROR([DAG support requested with --with-dag, but the DAG headers weren't found at $dag_include_dir: make sure the DAG support is installed, specify a different path or paths if necessary, or don't request DAG support])
884		fi
885	fi
886fi
887
888AC_ARG_WITH(septel,
889AC_HELP_STRING([--with-septel@<:@=DIR@:>@],[include Septel support (located in directory DIR, if supplied).  @<:@default=yes, if present@:>@]),
890[
891	if test "$withval" = no
892	then
893		want_septel=no
894	elif test "$withval" = yes
895	then
896		want_septel=yes
897		septel_root=
898	else
899		want_septel=yes
900		septel_root=$withval
901	fi
902],[
903	if test "$V_PCAP" = septel; then
904		# User requested Septel-only libpcap, so we'd better have
905		# the Septel API.
906		want_septel=yes
907	elif test "xxx_only" = yes; then
908		# User requested something-else-only pcap, so they don't
909		# want Septel support.
910		want_septel=no
911	else
912		#
913		# Use Septel API if present, otherwise don't
914		#
915		want_septel=ifpresent
916	fi
917])
918
919ac_cv_lbl_septel_api=no
920if test "$with_septel" != no; then
921
922	AC_MSG_CHECKING([whether we have Septel API headers])
923
924	# If necessary, set default paths for Septel API headers and libraries.
925	if test -z "$septel_root"; then
926		septel_root=$srcdir/../septel
927	fi
928
929	septel_tools_dir="$septel_root"
930	septel_include_dir="$septel_root/INC"
931
932	if test -r "$septel_include_dir/msg.h"; then
933		ac_cv_lbl_septel_api=yes
934	fi
935
936	if test "$ac_cv_lbl_septel_api" = yes; then
937		AC_MSG_RESULT([yes ($septel_include_dir)])
938
939		V_INCLS="$V_INCLS -I$septel_include_dir"
940		ADDLOBJS="$ADDLOBJS $septel_tools_dir/asciibin.o $septel_tools_dir/bit2byte.o $septel_tools_dir/confirm.o $septel_tools_dir/fmtmsg.o $septel_tools_dir/gct_unix.o $septel_tools_dir/hqueue.o $septel_tools_dir/ident.o $septel_tools_dir/mem.o $septel_tools_dir/pack.o $septel_tools_dir/parse.o $septel_tools_dir/pool.o $septel_tools_dir/sdlsig.o $septel_tools_dir/strtonum.o $septel_tools_dir/timer.o $septel_tools_dir/trace.o"
941		ADDLARCHIVEOBJS="$ADDLARCHIVEOBJS $septel_tools_dir/asciibin.o $septel_tools_dir/bit2byte.o $septel_tools_dir/confirm.o $septel_tools_dir/fmtmsg.o $septel_tools_dir/gct_unix.o $septel_tools_dir/hqueue.o $septel_tools_dir/ident.o $septel_tools_dir/mem.o $septel_tools_dir/pack.o $septel_tools_dir/parse.o $septel_tools_dir/pool.o $septel_tools_dir/sdlsig.o $septel_tools_dir/strtonum.o $septel_tools_dir/timer.o $septel_tools_dir/trace.o"
942
943		if test "$V_PCAP" != septel ; then
944			 SSRC="$SSRC pcap-septel.c"
945		fi
946
947		AC_DEFINE(HAVE_SEPTEL_API, 1, [define if you have the Septel API])
948	else
949		AC_MSG_RESULT(no)
950
951		if test "$V_PCAP" = septel; then
952			# User requested "septel" capture type but
953			# we couldn't find the Septel API support.
954			AC_MSG_ERROR([Septel support requested with --with-pcap=septel, but the Septel headers weren't found at $septel_include_dir: make sure the Septel support is installed, specify a different path or paths if necessary, or don't request Septel support])
955		fi
956
957		if test "$want_septel" = yes; then
958	        	# User wanted Septel support but we couldn't find it.
959			AC_MSG_ERROR([Septel support requested with --with-septel, but the Septel headers weren't found at $septel_include_dir: make sure the Septel support is installed, specify a different path or paths if necessary, or don't request Septel support])
960		fi
961	fi
962fi
963
964# Check for Myricom SNF support.
965AC_ARG_WITH([snf],
966AC_HELP_STRING([--with-snf@<:@=DIR@:>@],[include Myricom SNF support (located in directory DIR, if supplied).  @<:@default=yes, if present@:>@]),
967[
968	if test "$withval" = no
969	then
970		# User explicitly doesn't want SNF
971		want_snf=no
972	elif test "$withval" = yes
973	then
974		# User wants SNF support but hasn't specified a directory.
975		want_snf=yes
976	else
977		# User wants SNF support with a specified directory.
978		want_snf=yes
979		snf_root=$withval
980	fi
981],[
982	if test "$V_PCAP" = snf; then
983		# User requested Sniffer-only libpcap, so we'd better have
984		# the Sniffer API.
985		want_snf=yes
986	elif test "xxx_only" = yes; then
987		# User requested something-else-only pcap, so they don't
988		# want SNF support.
989		want_snf=no
990	else
991		#
992		# Use Sniffer API if present, otherwise don't
993		#
994		want_snf=ifpresent
995	fi
996])
997
998AC_ARG_WITH([snf-includes],
999AC_HELP_STRING([--with-snf-includes=IDIR],[Myricom SNF include directory, if not DIR/include]),
1000[
1001	# User wants SNF with specific header directory
1002	want_snf=yes
1003	snf_include_dir=$withval
1004],[])
1005
1006AC_ARG_WITH([snf-libraries],
1007AC_HELP_STRING([--with-snf-libraries=LDIR],[Myricom SNF library directory, if not DIR/lib]),
1008[
1009	# User wants SNF with specific lib directory
1010	want_snf=yes
1011	snf_lib_dir=$withval
1012],[])
1013
1014ac_cv_lbl_snf_api=no
1015if test "$with_snf" != no; then
1016
1017	AC_MSG_CHECKING(whether we have Myricom Sniffer API)
1018
1019	# If necessary, set default paths for Sniffer headers and libraries.
1020	if test -z "$snf_root"; then
1021		snf_root=/opt/snf
1022	fi
1023
1024	if test -z "$snf_include_dir"; then
1025		snf_include_dir="$snf_root/include"
1026	fi
1027
1028	if test -z "$snf_lib_dir"; then
1029		snf_lib_dir="$snf_root/lib"
1030	fi
1031
1032	if test -f "$snf_include_dir/snf.h"; then
1033		# We found a header; make sure we can link with the library
1034		saved_ldflags=$LDFLAGS
1035		LDFLAGS="$LDFLAGS -L$snf_lib_dir"
1036		AC_CHECK_LIB([snf], [snf_init], [ac_cv_lbl_snf_api="yes"])
1037		LDFLAGS="$saved_ldflags"
1038		if test "$ac_cv_lbl_snf_api" = no; then
1039			AC_MSG_ERROR(SNF API cannot correctly be linked; check config.log)
1040		fi
1041	fi
1042
1043	if test "$ac_cv_lbl_snf_api" = yes; then
1044		AC_MSG_RESULT([yes ($snf_root)])
1045
1046		V_INCLS="$V_INCLS -I$snf_include_dir"
1047		LIBS="$LIBS -lsnf"
1048		LDFLAGS="$LDFLAGS -L$snf_lib_dir"
1049
1050		if test "$V_PCAP" != snf ; then
1051			SSRC="$SSRC pcap-snf.c"
1052		fi
1053
1054		AC_DEFINE(HAVE_SNF_API, 1, [define if you have the Myricom SNF API])
1055	else
1056		AC_MSG_RESULT(no)
1057
1058		if test "$want_snf" = yes; then
1059			# User requested "snf" capture type but
1060			# we couldn't find the Sniffer API support.
1061			AC_MSG_ERROR([Myricom Sniffer support requested with --with-pcap=snf, but the Sniffer headers weren't found at $snf_include_dir: make sure the Sniffer support is installed, specify a different path or paths if necessary, or don't request Sniffer support])
1062		fi
1063
1064		if test "$want_snf" = yes; then
1065			AC_MSG_ERROR([Myricom Sniffer support requested with --with-snf, but the Sniffer headers weren't found at $snf_include_dir: make sure the Sniffer support is installed, specify a different path or paths if necessary, or don't request Sniffer support])
1066		fi
1067	fi
1068fi
1069
1070# Check for Riverbed TurboCap support.
1071AC_ARG_WITH([turbocap],
1072AC_HELP_STRING([--with-turbocap@<:@=DIR@:>@],[include Riverbed TurboCap support (located in directory DIR, if supplied).  @<:@default=yes, if present@:>@]),
1073[
1074	if test "$withval" = no
1075	then
1076		# User explicitly doesn't want TurboCap
1077		want_turbocap=no
1078	elif test "$withval" = yes
1079	then
1080		# User wants TurboCap support but hasn't specified a directory.
1081		want_turbocap=yes
1082	else
1083		# User wants TurboCap support with a specified directory.
1084		want_turbocap=yes
1085		turbocap_root=$withval
1086	fi
1087],[
1088	if test "xxx_only" = yes; then
1089		# User requested something-else-only pcap, so they don't
1090		# want TurboCap support.
1091		want_turbocap=no
1092	else
1093		#
1094		# Use TurboCap API if present, otherwise don't
1095		#
1096		want_turbocap=ifpresent
1097	fi
1098])
1099
1100ac_cv_lbl_turbocap_api=no
1101if test "$want_turbocap" != no; then
1102
1103	AC_MSG_CHECKING(whether TurboCap is supported)
1104
1105	save_CFLAGS="$CFLAGS"
1106	save_LIBS="$LIBS"
1107	if test ! -z "$turbocap_root"; then
1108		TURBOCAP_CFLAGS="-I$turbocap_root/include"
1109		TURBOCAP_LIBS="-L$turbocap_root/lib"
1110		CFLAGS="$CFLAGS $TURBOCAP_CFLAGS"
1111	fi
1112
1113	AC_TRY_COMPILE(
1114	[
1115	    #include <TcApi.h>
1116	],
1117	[
1118	    TC_INSTANCE a; TC_PORT b; TC_BOARD c;
1119	    TC_INSTANCE i;
1120	    (void)TcInstanceCreateByName("foo", &i);
1121	],
1122	ac_cv_lbl_turbocap_api=yes)
1123
1124	CFLAGS="$save_CFLAGS"
1125	if test $ac_cv_lbl_turbocap_api = yes; then
1126		AC_MSG_RESULT(yes)
1127
1128		SSRC="$SSRC pcap-tc.c"
1129		V_INCLS="$V_INCLS $TURBOCAP_CFLAGS"
1130		LIBS="$LIBS $TURBOCAP_LIBS -lTcApi -lpthread -lstdc++"
1131
1132		AC_DEFINE(HAVE_TC_API, 1, [define if you have the TurboCap API])
1133	else
1134		AC_MSG_RESULT(no)
1135
1136		if test "$want_turbocap" = yes; then
1137	        	# User wanted Turbo support but we couldn't find it.
1138			AC_MSG_ERROR([TurboCap support requested with --with-turbocap, but the TurboCap headers weren't found: make sure the TurboCap support is installed or don't request TurboCap support])
1139		fi
1140	fi
1141fi
1142
1143#
1144# Look for {f}lex.
1145#
1146AC_PROG_LEX
1147if test "$LEX" = ":"; then
1148	AC_MSG_ERROR([Neither flex nor lex was found.])
1149fi
1150
1151#
1152# Make sure {f}lex supports the -P, --header-file, and --nounput flags
1153# and supports processing our scanner.l.
1154#
1155AC_CACHE_CHECK([for capable lex], tcpdump_cv_capable_lex,
1156	if $LEX -P pcap_ --header-file=/dev/null --nounput -t $srcdir/scanner.l > /dev/null 2>&1; then
1157	    tcpdump_cv_capable_lex=yes
1158	else
1159	    tcpdump_cv_capable_lex=insufficient
1160	fi)
1161if test $tcpdump_cv_capable_lex = insufficient ; then
1162	AC_MSG_ERROR([$LEX is insufficient to compile libpcap.
1163 libpcap requires Flex 2.5.31 or later, or a compatible version of lex.])
1164fi
1165
1166#
1167# Look for yacc/bison/byacc.
1168#
1169AC_PROG_YACC
1170
1171#
1172# Make sure it supports the -p flag and supports processing our
1173# grammar.y.
1174#
1175AC_CACHE_CHECK([for capable yacc/bison], tcpdump_cv_capable_yacc,
1176	if $YACC -p pcap_ -o /dev/null $srcdir/grammar.y >/dev/null 2>&1; then
1177	    tcpdump_cv_capable_yacc=yes
1178	else
1179	    tcpdump_cv_capable_yacc=insufficient
1180	fi)
1181if test $tcpdump_cv_capable_yacc = insufficient ; then
1182	AC_MSG_ERROR([$YACC is insufficient to compile libpcap.
1183 libpcap requires Bison, Berkeley YACC, or another YACC compatible with them.])
1184fi
1185
1186#
1187# Assume, by default, no support for shared libraries and V7/BSD convention
1188# for man pages (file formats in section 5, miscellaneous info in section 7).
1189# Individual cases can override this.
1190#
1191DYEXT="none"
1192MAN_FILE_FORMATS=5
1193MAN_MISC_INFO=7
1194case "$host_os" in
1195
1196aix*)
1197	dnl Workaround to enable certain features
1198	AC_DEFINE(_SUN,1,[define on AIX to get certain functions])
1199
1200	#
1201	# AIX makes it fun to build shared and static libraries,
1202	# because they're *both* ".a" archive libraries.  We
1203	# build the static library for the benefit of the traditional
1204	# scheme of building libpcap and tcpdump in subdirectories of
1205	# the same directory, with tcpdump statically linked with the
1206	# libpcap in question, but we also build a shared library as
1207	# "libpcap.shareda" and install *it*, rather than the static
1208	# library, as "libpcap.a".
1209	#
1210	DYEXT="shareda"
1211
1212	case "$V_PCAP" in
1213
1214	dlpi)
1215		#
1216		# If we're using DLPI, applications will need to
1217		# use /lib/pse.exp if present, as we use the
1218		# STREAMS routines.
1219		#
1220		pseexe="/lib/pse.exp"
1221		AC_MSG_CHECKING(for $pseexe)
1222		if test -f $pseexe ; then
1223			AC_MSG_RESULT(yes)
1224			LIBS="-I:$pseexe"
1225		fi
1226		;;
1227
1228	bpf)
1229		#
1230		# If we're using BPF, we need "-lodm" and "-lcfg", as
1231		# we use them to load the BPF module.
1232		#
1233		LIBS="-lodm -lcfg"
1234		;;
1235	esac
1236	;;
1237
1238darwin*)
1239	DYEXT="dylib"
1240	V_CCOPT="$V_CCOPT -fno-common"
1241	AC_ARG_ENABLE(universal,
1242	AC_HELP_STRING([--disable-universal],[don't build universal on OS X]))
1243	if test "$enable_universal" != "no"; then
1244		case "$host_os" in
1245
1246		darwin[0-7].*)
1247			#
1248			# Pre-Tiger.  Build only for 32-bit PowerPC; no
1249			# need for any special compiler or linker flags.
1250			#
1251			;;
1252
1253		darwin8.[0123]*)
1254			#
1255			# Tiger, prior to Intel support.  Build for 32-bit
1256			# PowerPC and 64-bit PowerPC, with 32-bit PowerPC
1257			# first.  (I'm guessing that's what Apple does.)
1258			#
1259			V_CCOPT="$V_CCOPT -arch ppc -arch ppc64"
1260			LDFLAGS="$LDFLAGS -arch ppc -arch ppc64"
1261			;;
1262
1263		darwin8.[456]*)
1264			#
1265			# Tiger, subsequent to Intel support but prior to
1266			# x86-64 support.  Build for 32-bit PowerPC, 64-bit
1267			# PowerPC, and x86, with 32-bit PowerPC first.
1268			# (I'm guessing that's what Apple does.)
1269			#
1270			V_CCOPT="$V_CCOPT -arch ppc -arch ppc64 -arch i386"
1271			LDFLAGS="$LDFLAGS -arch ppc -arch ppc64 -arch i386"
1272			;;
1273
1274		darwin8.*)
1275			#
1276			# All other Tiger, so subsequent to x86-64
1277			# support. Build for 32-bit PowerPC, 64-bit
1278			# PowerPC, x86, and x86-64, and with 32-bit PowerPC
1279			# first.  (I'm guessing that's what Apple does.)
1280			#
1281			V_CCOPT="$V_CCOPT -arch ppc -arch ppc64 -arch i386 -arch x86_64"
1282			LDFLAGS="$LDFLAGS -arch ppc -arch ppc64 -arch i386 -arch x86_64"
1283			;;
1284
1285		darwin9.*)
1286			#
1287			# Leopard.  Build for 32-bit PowerPC, 64-bit
1288			# PowerPC, x86, and x86-64, with 32-bit PowerPC
1289			# first.  (That's what Apple does.)
1290			#
1291			V_CCOPT="$V_CCOPT -arch ppc -arch ppc64 -arch i386 -arch x86_64"
1292			LDFLAGS="$LDFLAGS -arch ppc -arch ppc64 -arch i386 -arch x86_64"
1293			;;
1294
1295		darwin10.*)
1296			#
1297			# Snow Leopard.  Build for x86-64, x86, and
1298			# 32-bit PowerPC, with x86-64 first.  (That's
1299			# what Apple does, even though Snow Leopard
1300			# doesn't run on PPC, so PPC libpcap runs under
1301			# Rosetta, and Rosetta doesn't support BPF
1302			# ioctls, so PPC programs can't do live
1303			# captures.)
1304			#
1305			V_CCOPT="$V_CCOPT -arch x86_64 -arch i386 -arch ppc"
1306			LDFLAGS="$LDFLAGS -arch x86_64 -arch i386 -arch ppc"
1307			;;
1308
1309		darwin*)
1310			#
1311			# Post-Snow Leopard.  Build for x86-64 and
1312			# x86, with x86-64 first.  (That's probably what
1313			# Apple does, given that Rosetta is gone.)
1314			# XXX - update if and when Apple drops support
1315			# for 32-bit x86 code.
1316			#
1317			V_CCOPT="$V_CCOPT -arch x86_64 -arch i386"
1318			LDFLAGS="$LDFLAGS -arch x86_64 -arch i386"
1319			;;
1320		esac
1321	fi
1322	;;
1323
1324hpux9*)
1325	AC_DEFINE(HAVE_HPUX9,1,[on HP-UX 9.x])
1326
1327	#
1328	# Use System V conventions for man pages.
1329	#
1330	MAN_FILE_FORMATS=4
1331	MAN_MISC_INFO=5
1332	;;
1333
1334hpux10.0*)
1335
1336	#
1337	# Use System V conventions for man pages.
1338	#
1339	MAN_FILE_FORMATS=4
1340	MAN_MISC_INFO=5
1341	;;
1342
1343hpux10.1*)
1344
1345	#
1346	# Use System V conventions for man pages.
1347	#
1348	MAN_FILE_FORMATS=4
1349	MAN_MISC_INFO=5
1350	;;
1351
1352hpux*)
1353	dnl HPUX 10.20 and above is similar to HPUX 9, but
1354	dnl not the same....
1355	dnl
1356	dnl XXX - DYEXT should be set to "sl" if this is building
1357	dnl for 32-bit PA-RISC, but should be left as "so" for
1358	dnl 64-bit PA-RISC or, I suspect, IA-64.
1359	AC_DEFINE(HAVE_HPUX10_20_OR_LATER,1,[on HP-UX 10.20 or later])
1360	if test "`uname -m`" = "ia64"; then
1361		DYEXT="so"
1362	else
1363		DYEXT="sl"
1364	fi
1365
1366	#
1367	# "-b" builds a shared library; "+h" sets the soname.
1368	#
1369	SHLIB_OPT="-b"
1370	SONAME_OPT="+h"
1371
1372	#
1373	# Use System V conventions for man pages.
1374	#
1375	MAN_FILE_FORMATS=4
1376	MAN_MISC_INFO=5
1377	;;
1378
1379irix*)
1380	#
1381	# Use System V conventions for man pages.
1382	#
1383	MAN_FILE_FORMATS=4
1384	MAN_MISC_INFO=5
1385	;;
1386
1387linux*|freebsd*|netbsd*|openbsd*|dragonfly*|kfreebsd*|gnu*)
1388	DYEXT="so"
1389
1390	#
1391	# Compiler assumed to be GCC; run-time linker may require a -R
1392	# flag.
1393	#
1394	if test "$libdir" != "/usr/lib"; then
1395		V_RFLAGS=-Wl,-R$libdir
1396	fi
1397	;;
1398
1399osf*)
1400	DYEXT="so"
1401
1402	#
1403	# Use System V conventions for man pages.
1404	#
1405	MAN_FILE_FORMATS=4
1406	MAN_MISC_INFO=5
1407	;;
1408
1409sinix*)
1410	AC_MSG_CHECKING(if SINIX compiler defines sinix)
1411	AC_CACHE_VAL(ac_cv_cc_sinix_defined,
1412		AC_TRY_COMPILE(
1413		    [],
1414		    [int i = sinix;],
1415		    ac_cv_cc_sinix_defined=yes,
1416		    ac_cv_cc_sinix_defined=no))
1417	    AC_MSG_RESULT($ac_cv_cc_sinix_defined)
1418	    if test $ac_cv_cc_sinix_defined = no ; then
1419		    AC_DEFINE(sinix,1,[on sinix])
1420	    fi
1421	;;
1422
1423solaris*)
1424	AC_DEFINE(HAVE_SOLARIS,1,[On solaris])
1425
1426	DYEXT="so"
1427	#
1428	# Use System V conventions for man pages.
1429	#
1430	MAN_FILE_FORMATS=4
1431	MAN_MISC_INFO=5
1432	;;
1433esac
1434
1435AC_ARG_ENABLE(shared,
1436AC_HELP_STRING([--enable-shared],[build shared libraries @<:@default=yes, if support available@:>@]))
1437test "x$enable_shared" = "xno" && DYEXT="none"
1438
1439AC_PROG_RANLIB
1440AC_CHECK_TOOL([AR], [ar])
1441
1442AC_PROG_LN_S
1443AC_SUBST(LN_S)
1444
1445AC_LBL_DEVEL(V_CCOPT)
1446
1447AC_LBL_SOCKADDR_SA_LEN
1448
1449AC_LBL_SOCKADDR_STORAGE
1450
1451AC_LBL_HP_PPA_INFO_T_DL_MODULE_ID_1
1452
1453AC_LBL_UNALIGNED_ACCESS
1454
1455rm -f net
1456ln -s ${srcdir}/bpf/net net
1457
1458AC_SUBST(V_CCOPT)
1459AC_SUBST(V_DEFS)
1460AC_SUBST(V_FINDALLDEVS)
1461AC_SUBST(V_INCLS)
1462AC_SUBST(V_LEX)
1463AC_SUBST(V_PCAP)
1464AC_SUBST(V_SHLIB_CMD)
1465AC_SUBST(V_SHLIB_OPT)
1466AC_SUBST(V_SONAME_OPT)
1467AC_SUBST(V_RPATH_OPT)
1468AC_SUBST(V_YACC)
1469AC_SUBST(ADDLOBJS)
1470AC_SUBST(ADDLARCHIVEOBJS)
1471AC_SUBST(SSRC)
1472AC_SUBST(DYEXT)
1473AC_SUBST(MAN_FILE_FORMATS)
1474AC_SUBST(MAN_MISC_INFO)
1475
1476AC_ARG_ENABLE([usb],
1477[AC_HELP_STRING([--enable-usb],[enable nusb support @<:@default=yes, if support available@:>@])],
1478    [],
1479    [enable_usb=yes])
1480
1481if test "xxx_only" = yes; then
1482	# User requested something-else-only pcap, so they don't
1483	# want USB support.
1484	enable_usb=no
1485fi
1486
1487if test "x$enable_usb" != "xno" ; then
1488   dnl check for USB sniffing support
1489   AC_MSG_CHECKING(for USB sniffing support)
1490   case "$host_os" in
1491   linux*)
1492	AC_DEFINE(PCAP_SUPPORT_USB, 1, [target host supports USB sniffing])
1493	USB_SRC=pcap-usb-linux.c
1494	AC_MSG_RESULT(yes)
1495	ac_usb_dev_name=`udevinfo -q name -p /sys/class/usb_device/usbmon 2>/dev/null`
1496	if test $? -ne 0 ; then
1497	  ac_usb_dev_name="usbmon"
1498	fi
1499	AC_DEFINE_UNQUOTED(LINUX_USB_MON_DEV, "/dev/$ac_usb_dev_name", [path for device for USB sniffing])
1500	AC_MSG_NOTICE(Device for USB sniffing is /dev/$ac_usb_dev_name)
1501	#
1502	# Do we have a version of <linux/compiler.h> available?
1503	# If so, we might need it for <linux/usbdevice_fs.h>.
1504	#
1505	AC_CHECK_HEADERS(linux/compiler.h)
1506	if test "$ac_cv_header_linux_compiler_h" = yes; then
1507	  #
1508	  # Yes - include it when testing for <linux/usbdevice_fs.h>.
1509	  #
1510	  AC_CHECK_HEADERS(linux/usbdevice_fs.h,,,[#include <linux/compiler.h>])
1511	else
1512	  AC_CHECK_HEADERS(linux/usbdevice_fs.h)
1513	fi
1514	if test "$ac_cv_header_linux_usbdevice_fs_h" = yes; then
1515	  #
1516	  # OK, does it define bRequestType?  Older versions of the kernel
1517	  # define fields with names like "requesttype, "request", and
1518	  # "value", rather than "bRequestType", "bRequest", and
1519	  # "wValue".
1520	  #
1521	  AC_MSG_CHECKING(if usbdevfs_ctrltransfer struct has bRequestType member)
1522	  AC_CACHE_VAL(ac_cv_usbdevfs_ctrltransfer_has_bRequestType,
1523	    AC_TRY_COMPILE([
1524AC_INCLUDES_DEFAULT
1525#ifdef HAVE_SYS_BITYPES_H
1526#include <sys/bitypes.h>
1527#endif
1528#ifdef HAVE_LINUX_COMPILER_H
1529#include <linux/compiler.h>
1530#endif
1531#include <linux/usbdevice_fs.h>],
1532	      [u_int i = sizeof(((struct usbdevfs_ctrltransfer *)0)->bRequestType)],
1533	      ac_cv_usbdevfs_ctrltransfer_has_bRequestType=yes,
1534	      ac_cv_usbdevfs_ctrltransfer_has_bRequestType=no))
1535	    AC_MSG_RESULT($ac_cv_usbdevfs_ctrltransfer_has_bRequestType)
1536	    if test $ac_cv_usbdevfs_ctrltransfer_has_bRequestType = yes ; then
1537	      AC_DEFINE(HAVE_USBDEVFS_CTRLTRANSFER_BREQUESTTYPE,1,
1538	        [if struct usbdevfs_ctrltransfer has bRequestType])
1539	    fi
1540	fi
1541	;;
1542    freebsd*)
1543	#
1544	# This just uses BPF in FreeBSD 8.4 and later; we don't need
1545	# to check for anything special for capturing.
1546	#
1547	AC_MSG_RESULT([yes, in FreeBSD 8.4 and later])
1548	;;
1549
1550    *)
1551	AC_MSG_RESULT(no)
1552	;;
1553esac
1554fi
1555AC_SUBST(PCAP_SUPPORT_USB)
1556AC_SUBST(USB_SRC)
1557
1558dnl check for netfilter sniffing support
1559if test "xxx_only" != yes; then
1560	AC_MSG_CHECKING(whether the platform could support netfilter sniffing)
1561	case "$host_os" in
1562	linux*)
1563		AC_MSG_RESULT(yes)
1564		#
1565		# Life's too short to deal with trying to get this to compile
1566		# if you don't get the right types defined with
1567		# __KERNEL_STRICT_NAMES getting defined by some other include.
1568		#
1569		# Check whether the includes Just Work.  If not, don't turn on
1570		# netfilter support.
1571		#
1572		AC_MSG_CHECKING(whether we can compile the netfilter support)
1573		AC_CACHE_VAL(ac_cv_netfilter_can_compile,
1574		  AC_TRY_COMPILE([
1575AC_INCLUDES_DEFAULT
1576#include <sys/socket.h>
1577#include <netinet/in.h>
1578#include <linux/types.h>
1579
1580#include <linux/netlink.h>
1581#include <linux/netfilter.h>
1582#include <linux/netfilter/nfnetlink.h>
1583#include <linux/netfilter/nfnetlink_log.h>
1584#include <linux/netfilter/nfnetlink_queue.h>],
1585	    [],
1586	    ac_cv_netfilter_can_compile=yes,
1587	    ac_cv_netfilter_can_compile=no))
1588		AC_MSG_RESULT($ac_cv_netfilter_can_compile)
1589		if test $ac_cv_netfilter_can_compile = yes ; then
1590		  AC_DEFINE(PCAP_SUPPORT_NETFILTER, 1,
1591		    [target host supports netfilter sniffing])
1592		  NETFILTER_SRC=pcap-netfilter-linux.c
1593		fi
1594		;;
1595	*)
1596		AC_MSG_RESULT(no)
1597		;;
1598	esac
1599fi
1600AC_SUBST(PCAP_SUPPORT_NETFILTER)
1601AC_SUBST(NETFILTER_SRC)
1602
1603AC_ARG_ENABLE([bluetooth],
1604[AC_HELP_STRING([--enable-bluetooth],[enable Bluetooth support @<:@default=yes, if support available@:>@])],
1605    [],
1606    [enable_bluetooth=ifsupportavailable])
1607
1608if test "xxx_only" = yes; then
1609	# User requested something-else-only pcap, so they don't
1610	# want Bluetooth support.
1611	enable_bluetooth=no
1612fi
1613
1614if test "x$enable_bluetooth" != "xno" ; then
1615	dnl check for Bluetooth sniffing support
1616	case "$host_os" in
1617	linux*)
1618		AC_CHECK_HEADER(bluetooth/bluetooth.h,
1619		[
1620		  AC_DEFINE(PCAP_SUPPORT_BT, 1, [target host supports Bluetooth sniffing])
1621		  BT_SRC=pcap-bt-linux.c
1622		  AC_MSG_NOTICE(Bluetooth sniffing is supported)
1623
1624		  #
1625		  # OK, does struct sockaddr_hci have an hci_channel
1626		  # member?
1627		  #
1628		  AC_MSG_CHECKING(if struct sockaddr_hci has hci_channel member)
1629		  AC_CACHE_VAL(ac_cv_lbl_sockaddr_hci_has_hci_channel,
1630		    AC_TRY_COMPILE(
1631[
1632#include <bluetooth/bluetooth.h>
1633#include <bluetooth/hci.h>
1634],
1635		      [u_int i = sizeof(((struct sockaddr_hci *)0)->hci_channel)],
1636		      ac_cv_lbl_sockaddr_hci_has_hci_channel=yes,
1637		      ac_cv_lbl_sockaddr_hci_has_hci_channel=no))
1638		    AC_MSG_RESULT($ac_cv_lbl_sockaddr_hci_has_hci_channel)
1639		    if test $ac_cv_lbl_sockaddr_hci_has_hci_channel = yes ; then
1640		      AC_DEFINE(SOCKADDR_HCI_HAS_HCI_CHANNEL,,
1641			[if struct sockaddr_hci has hci_channel member])
1642
1643		      #
1644		      # OK, is HCI_CHANNEL_MONITOR defined?
1645		      #
1646		      AC_MSG_CHECKING(if HCI_CHANNEL_MONITOR is defined)
1647		      AC_CACHE_VAL(ac_cv_lbl_hci_channel_monitor_is_defined,
1648		      AC_TRY_COMPILE(
1649[
1650#include <bluetooth/bluetooth.h>
1651#include <bluetooth/hci.h>
1652],
1653			[u_int i = HCI_CHANNEL_MONITOR],
1654			ac_cv_lbl_hci_channel_monitor_is_defined=yes,
1655			ac_cv_lbl_hci_channel_monitor_is_defined=no))
1656		      AC_MSG_RESULT($ac_cv_lbl_hci_channel_monitor_is_defined)
1657		      if test $ac_cv_lbl_hci_channel_monitor_is_defined = yes ; then
1658			AC_DEFINE(PCAP_SUPPORT_BT_MONITOR,,
1659			  [target host supports Bluetooth Monitor])
1660			BT_MONITOR_SRC=pcap-bt-monitor-linux.c
1661		      fi
1662		    fi
1663		    ac_lbl_bluetooth_available=yes
1664		],
1665		ac_lbl_bluetooth_available=no
1666		)
1667		if test "x$ac_lbl_bluetooth_available" == "xno" ; then
1668		    if test "x$enable_bluetooth" = "xyes" ; then
1669			AC_MSG_ERROR(Bluetooth sniffing is not supported; install bluez-lib devel to enable it)
1670		    else
1671			AC_MSG_NOTICE(Bluetooth sniffing is not supported; install bluez-lib devel to enable it)
1672		    fi
1673		fi
1674		;;
1675	*)
1676		if test "x$enable_bluetooth" = "xyes" ; then
1677		    AC_MSG_ERROR(no Bluetooth sniffing support implemented for $host_os)
1678		else
1679		    AC_MSG_NOTICE(no Bluetooth sniffing support implemented for $host_os)
1680		fi
1681		;;
1682	esac
1683	AC_SUBST(PCAP_SUPPORT_BT)
1684	AC_SUBST(BT_SRC)
1685	AC_SUBST(BT_MONITOR_SRC)
1686fi
1687
1688AC_ARG_ENABLE([dbus],
1689[AC_HELP_STRING([--enable-dbus],[enable D-Bus capture support @<:@default=yes, if support available@:>@])],
1690    [],
1691    [enable_dbus=ifavailable])
1692
1693if test "xxx_only" = yes; then
1694	# User requested something-else-only pcap, so they don't
1695	# want D-Bus support.
1696	enable_dbus=no
1697fi
1698
1699if test "x$enable_dbus" != "xno"; then
1700	if test "x$enable_dbus" = "xyes"; then
1701		case "$host_os" in
1702
1703		darwin*)
1704			#
1705			# We don't support D-Bus sniffing on OS X; see
1706			#
1707			# https://bugs.freedesktop.org/show_bug.cgi?id=74029
1708			#
1709			# The user requested it, so fail.
1710			#
1711			AC_MSG_ERROR([Due to freedesktop.org bug 74029, D-Bus capture support is not available on OS X])
1712		esac
1713	else
1714		case "$host_os" in
1715
1716		darwin*)
1717			#
1718			# We don't support D-Bus sniffing on OS X; see
1719			#
1720			# https://bugs.freedesktop.org/show_bug.cgi?id=74029
1721			#
1722			# The user dind't explicitly request it, so just
1723			# silently refuse to enable it.
1724			#
1725			enable_dbus="no"
1726			;;
1727		esac
1728	fi
1729fi
1730
1731if test "x$enable_dbus" != "xno"; then
1732	AC_CHECK_PROG([PKGCONFIG], [pkg-config], [pkg-config], [no])
1733	if test "x$PKGCONFIG" != "xno"; then
1734		AC_MSG_CHECKING([for D-Bus])
1735		if "$PKGCONFIG" dbus-1; then
1736			AC_MSG_RESULT([yes])
1737			DBUS_CFLAGS=`"$PKGCONFIG" --cflags dbus-1`
1738			DBUS_LIBS=`"$PKGCONFIG" --libs dbus-1`
1739			save_CFLAGS="$CFLAGS"
1740			save_LIBS="$LIBS"
1741			CFLAGS="$CFLAGS $DBUS_CFLAGS"
1742			LIBS="$LIBS $DBUS_LIBS"
1743			AC_MSG_CHECKING(whether the D-Bus library defines dbus_connection_read_write)
1744			AC_TRY_LINK(
1745			    [#include <string.h>
1746
1747			     #include <time.h>
1748			     #include <sys/time.h>
1749
1750			     #include <dbus/dbus.h>],
1751			    [return dbus_connection_read_write(NULL, 0);],
1752			    [
1753				AC_MSG_RESULT([yes])
1754				AC_DEFINE(PCAP_SUPPORT_DBUS, 1, [support D-Bus sniffing])
1755				DBUS_SRC=pcap-dbus.c
1756				V_INCLS="$V_INCLS $DBUS_CFLAGS"
1757			    ],
1758			    [
1759				AC_MSG_RESULT([no])
1760				if test "x$enable_dbus" = "xyes"; then
1761				    AC_MSG_ERROR([--enable-dbus was given, but the D-Bus library doesn't define dbus_connection_read_write()])
1762				fi
1763				LIBS="$save_LIBS"
1764			     ])
1765			CFLAGS="$save_CFLAGS"
1766		else
1767			AC_MSG_RESULT([no])
1768			if test "x$enable_dbus" = "xyes"; then
1769				AC_MSG_ERROR([--enable-dbus was given, but the dbus-1 package is not installed])
1770			fi
1771		fi
1772	fi
1773	AC_SUBST(PCAP_SUPPORT_DBUS)
1774	AC_SUBST(DBUS_SRC)
1775fi
1776
1777dnl check for hardware timestamp support
1778case "$host_os" in
1779linux*)
1780	AC_CHECK_HEADERS([linux/net_tstamp.h])
1781	;;
1782*)
1783	AC_MSG_NOTICE(no hardware timestamp support implemented for $host_os)
1784	;;
1785esac
1786
1787dnl The packet ring capture facility of Linux, described in
1788dnl Documentation/networking/packet_mmap.txt, is not 32/64-bit compatible before
1789dnl version 2.6.27. A 32-bit kernel requires a 32-bit userland, and likewise for
1790dnl 64-bit. The effect of this is that a 32-bit libpcap binary will not run
1791dnl correctly on a 64-bit kernel (the binary will use the wrong offsets into a
1792dnl kernel struct). This problem was solved in Linux 2.6.27. Use
1793dnl --disable-packet-ring whenever a 32-bit application must run on a 64-bit
1794dnl target host, and either the build host or the target host run Linux 2.6.26
1795dnl or earlier.
1796AC_ARG_ENABLE([packet-ring],
1797[AC_HELP_STRING([--enable-packet-ring],[enable Linux packet ring support @<:@default=yes@:>@])],
1798,enable_packet_ring=yes)
1799
1800if test "x$enable_packet_ring" != "xno" ; then
1801	AC_DEFINE(PCAP_SUPPORT_PACKET_RING, 1, [use Linux packet ring capture if available])
1802	AC_SUBST(PCAP_SUPPORT_PACKET_RING)
1803fi
1804
1805AC_PROG_INSTALL
1806
1807AC_CONFIG_HEADER(config.h)
1808
1809AC_OUTPUT_COMMANDS([if test -f .devel; then
1810	echo timestamp > stamp-h
1811	cat Makefile-devel-adds >> Makefile
1812	make depend
1813fi])
1814AC_OUTPUT(Makefile pcap-filter.manmisc pcap-linktype.manmisc
1815	pcap-tstamp.manmisc pcap-savefile.manfile pcap.3pcap
1816	pcap_compile.3pcap pcap_datalink.3pcap pcap_dump_open.3pcap
1817	pcap_get_tstamp_precision.3pcap pcap_list_datalinks.3pcap
1818	pcap_list_tstamp_types.3pcap pcap_open_dead.3pcap
1819	pcap_open_offline.3pcap pcap_set_tstamp_precision.3pcap
1820	pcap_set_tstamp_type.3pcap)
1821exit 0
1822