1 dnl Macros that test for specific features.
2 dnl This file is part of the Autoconf packaging for Ethereal.
3 dnl Copyright (C) 1998-2000 by Gerald Combs.
5 dnl $Id: acinclude.m4,v 1.26 2001/05/23 19:38:07 guy Exp $
7 dnl This program is free software; you can redistribute it and/or modify
8 dnl it under the terms of the GNU General Public License as published by
9 dnl the Free Software Foundation; either version 2, or (at your option)
10 dnl any later version.
12 dnl This program is distributed in the hope that it will be useful,
13 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
14 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 dnl GNU General Public License for more details.
17 dnl You should have received a copy of the GNU General Public License
18 dnl along with this program; if not, write to the Free Software
19 dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
22 dnl As a special exception, the Free Software Foundation gives unlimited
23 dnl permission to copy, distribute and modify the configure scripts that
24 dnl are the output of Autoconf. You need not follow the terms of the GNU
25 dnl General Public License when using or distributing such scripts, even
26 dnl though portions of the text of Autoconf appear in them. The GNU
27 dnl General Public License (GPL) does govern all other use of the material
28 dnl that constitutes the Autoconf program.
30 dnl Certain portions of the Autoconf source text are designed to be copied
31 dnl (in certain cases, depending on the input) into the output of
32 dnl Autoconf. We call these the "data" portions. The rest of the Autoconf
33 dnl source text consists of comments plus executable code that decides which
34 dnl of the data portions to output in any given case. We call these
35 dnl comments and executable code the "non-data" portions. Autoconf never
36 dnl copies any of the non-data portions into its output.
38 dnl This special exception to the GPL applies to versions of Autoconf
39 dnl released by the Free Software Foundation. When you make and
40 dnl distribute a modified version of Autoconf, you may extend this special
41 dnl exception to the GPL to apply to your modified version as well, *unless*
42 dnl your modified version has the potential to copy into its output some
43 dnl of the text that was the non-data portion of the version that you started
44 dnl with. (In other words, unless your change moves or copies text from
45 dnl the non-data portions to the data portions.) If your modification has
46 dnl such potential, you must delete any notice of this special exception
47 dnl to the GPL from your modified version.
49 dnl Written by David MacKenzie, with help from
50 dnl Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
51 dnl Roland McGrath, Noah Friedman, david d zuhn, and many others.
54 # AC_ETHEREAL_ADD_DASH_L
56 # Add to the variable specified as the first argument a "-L" flag for the
57 # directory specified as the second argument, and, on Solaris, add a
58 # "-R" flag for it as well.
60 # XXX - IRIX, and other OSes, may require some flag equivalent to
63 AC_DEFUN(AC_ETHEREAL_ADD_DASH_L,
74 # AC_ETHEREAL_STRUCT_SA_LEN
76 dnl AC_STRUCT_ST_BLKSIZE extracted from the file in question,
77 dnl "acspecific.m4" in GNU Autoconf 2.12, and turned into
78 dnl AC_ETHEREAL_STRUCT_SA_LEN, which checks if "struct sockaddr"
79 dnl has the 4.4BSD "sa_len" member, and defines HAVE_SA_LEN; that's
80 dnl what's in this file.
81 dnl Done by Guy Harris <guy@alum.mit.edu> on 1998-11-14.
83 dnl ### Checks for structure members
85 AC_DEFUN(AC_ETHEREAL_STRUCT_SA_LEN,
86 [AC_CACHE_CHECK([for sa_len in struct sockaddr], ac_cv_ethereal_struct_sa_len,
87 [AC_TRY_COMPILE([#include <sys/types.h>
88 #include <sys/socket.h>], [struct sockaddr s; s.sa_len;],
89 ac_cv_ethereal_struct_sa_len=yes, ac_cv_ethereal_struct_sa_len=no)])
90 if test $ac_cv_ethereal_struct_sa_len = yes; then
91 AC_DEFINE(HAVE_SA_LEN)
96 # AC_ETHEREAL_IPV6_STACK
98 # By Jun-ichiro "itojun" Hagino, <itojun@iijlab.net>
100 AC_DEFUN(AC_ETHEREAL_IPV6_STACK,
105 AC_MSG_CHECKING([ipv6 stack type])
106 for i in v6d toshiba kame inria zeta linux; do
110 #include </usr/local/v6/include/sys/types.h>
114 [v6type=$i; v6lib=v6;
115 v6libdir=/usr/local/v6/lib;
116 CFLAGS="-I/usr/local/v6/include $CFLAGS"])
120 #include <sys/param.h>
121 #ifdef _TOSHIBA_INET6
124 [v6type=$i; v6lib=inet6;
125 v6libdir=/usr/local/v6/lib;
126 CFLAGS="-DINET6 $CFLAGS"])
130 #include <netinet/in.h>
134 [v6type=$i; v6lib=inet6;
135 v6libdir=/usr/local/v6/lib;
136 CFLAGS="-DINET6 $CFLAGS"])
140 #include <netinet/in.h>
141 #ifdef IPV6_INRIA_VERSION
144 [v6type=$i; CFLAGS="-DINET6 $CFLAGS"])
148 #include <sys/param.h>
149 #ifdef _ZETA_MINAMI_INET6
152 [v6type=$i; v6lib=inet6;
153 v6libdir=/usr/local/v6/lib;
154 CFLAGS="-DINET6 $CFLAGS"])
157 if test -d /usr/inet6; then
161 CFLAGS="-DINET6 $CFLAGS"
165 if test "$v6type" != "unknown"; then
170 if test "$v6lib" != "none"; then
171 for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do
172 if test -d $dir -a -f $dir/lib$v6lib.a; then
173 LIBS="-L$dir $LIBS -l$v6lib"
181 AC_MSG_RESULT(["$v6type, $v6lib"])
185 # AC_ETHEREAL_GETHOSTBY_LIB_CHECK
187 # Checks whether we need "-lnsl" to get "gethostby*()", which we use
190 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
191 # GNU Autoconf 2.13; the comment came from there.
192 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
194 AC_DEFUN(AC_ETHEREAL_GETHOSTBY_LIB_CHECK,
196 # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
197 # to get the SysV transport functions.
198 # chad@anasazi.com says the Pyramid MIS-ES running DC/OSx (SVR4)
200 # The nsl library prevents programs from opening the X display
201 # on Irix 5.2, according to dickey@clark.net.
202 AC_CHECK_FUNC(gethostbyname)
203 if test $ac_cv_func_gethostbyname = no; then
204 AC_CHECK_LIB(nsl, gethostbyname, NSL_LIBS="-lnsl")
210 # AC_ETHEREAL_SOCKET_LIB_CHECK
212 # Checks whether we need "-lsocket" to get "socket()", which is used
213 # by libpcap on some platforms - and, in effect, "gethostby*()" on
214 # most if not all platforms (so that it can use NIS or DNS or...
215 # to look up host names).
217 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
218 # GNU Autoconf 2.13; the comment came from there.
219 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
221 # We use "connect" because that's what AC_PATH_XTRA did.
223 AC_DEFUN(AC_ETHEREAL_SOCKET_LIB_CHECK,
225 # lieder@skyler.mavd.honeywell.com says without -lsocket,
226 # socket/setsockopt and other routines are undefined under SCO ODT
227 # 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary
228 # on later versions), says simon@lia.di.epfl.ch: it contains
229 # gethostby* variants that don't use the nameserver (or something).
230 # -lsocket must be given before -lnsl if both are needed.
231 # We assume that if connect needs -lnsl, so does gethostbyname.
232 AC_CHECK_FUNC(connect)
233 if test $ac_cv_func_connect = no; then
234 AC_CHECK_LIB(socket, connect, SOCKET_LIBS="-lsocket",
235 AC_MSG_ERROR(Function 'socket' not found.), $NSL_LIBS)
237 AC_SUBST(SOCKET_LIBS)
241 # AC_ETHEREAL_PCAP_CHECK
243 AC_DEFUN(AC_ETHEREAL_PCAP_CHECK,
245 # Evidently, some systems have pcap.h, etc. in */include/pcap
246 AC_MSG_CHECKING(for extraneous pcap header directories)
248 for pcap_dir in /usr/include/pcap /usr/local/include/pcap $prefix/include
250 if test -d $pcap_dir ; then
251 CFLAGS="$CFLAGS -I$pcap_dir"
252 CPPFLAGS="$CPPFLAGS -I$pcap_dir"
253 found_pcap_dir=" $found_pcap_dir -I$pcap_dir"
257 if test "$found_pcap_dir" != "" ; then
258 AC_MSG_RESULT(found --$found_pcap_dir added to CFLAGS)
260 AC_MSG_RESULT(not found)
264 AC_CHECK_HEADER(net/bpf.h,,
265 AC_MSG_ERROR([[Header file net/bpf.h not found; if you installed libpcap from source, did you also do \"make install-incl\"?]]))
266 AC_CHECK_HEADER(pcap.h,, AC_MSG_ERROR(Header file pcap.h not found.))
269 # Check to see if we find "pcap_open_live" in "-lpcap".
271 AC_CHECK_LIB(pcap, pcap_open_live,
274 AC_DEFINE(HAVE_LIBPCAP)
275 ], AC_MSG_ERROR(Library libpcap not found.),
276 $SOCKET_LIBS $NSL_LIBS)
281 # AC_ETHEREAL_ZLIB_CHECK
283 AC_DEFUN(AC_ETHEREAL_ZLIB_CHECK,
285 AC_CHECK_HEADER(zlib.h,,enable_zlib=no)
288 dnl Check for "gzgets()" in zlib, because we need it, but
289 dnl some older versions of zlib don't have it. It appears
290 dnl from the ChangeLog that any released version of zlib
291 dnl with "gzgets()" should have the other routines we
292 dnl depend on, such as "gzseek()", "gztell()", and "zError()".
294 AC_CHECK_LIB(z, gzgets,,enable_zlib=no)
298 # AC_ETHEREAL_UCDSNMP_CHECK
300 AC_DEFUN(AC_ETHEREAL_UCDSNMP_CHECK,
305 [ --with-ucdsnmp=DIR use UCD SNMP client library, located in directory DIR.], [
306 if test $withval = no
311 ucdsnmp_user_dir=$withval
315 if test $want_ucdsnmp = yes
319 for d in $ucdsnmp_user_dir $prefix
323 AC_MSG_CHECKING($d for ucd-snmp)
325 if test x$d != x/usr/local && test -f $d/include/ucd-snmp/snmp.h
331 AC_MSG_RESULT(not found)
336 if test x$ucdsnmpdir != x
338 AC_MSG_RESULT(added $d to paths)
339 CFLAGS="$CFLAGS -I${ucdsnmpdir}/include"
340 CPPFLAGS="$CPPFLAGS -I${ucdsnmpdir}/include"
341 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${ucdsnmpdir}/lib)
347 # AC_ETHEREAL_SSL_CHECK
349 AC_DEFUN(AC_ETHEREAL_SSL_CHECK,
354 [ --with-ssl=DIR use SSL crypto library, located in directory DIR.], [
355 if test "x$withval" = "xno"; then
357 elif test "x$withval" = "xyes"; then
359 elif test -d "$withval"; then
361 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
365 if test "x$want_ssl" = "xdefaultyes"; then
367 withval=/usr/local/ssl
368 if test -d "$withval"; then
369 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
373 if test "x$want_ssl" = "xyes"; then
374 AC_CHECK_LIB(crypto, EVP_md5,
382 AC_MSG_RESULT(not required)