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 1.35 2001/09/28 05:41:44 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 $ac_cv_ethereal_struct_sa_len = yes; then
91 AC_DEFINE(HAVE_SA_LEN)
96 # AC_ETHEREAL_IPV6_STACK
98 # By Jun-ichiro "itojun" Hagino, <itojun@iijlab.net>
100 AC_DEFUN(AC_ETHEREAL_IPV6_STACK,
105 AC_MSG_CHECKING([ipv6 stack type])
106 for i in v6d toshiba kame inria zeta linux linux-glibc; do
110 #include </usr/local/v6/include/sys/types.h>
114 [v6type=$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 $CFLAGS"
166 #include <features.h>
167 #if defined(__GLIBC__) && defined(__GLIBC_MINOR__)
168 #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || __GLIBC__ > 2
172 [v6type=$i; v6lib=inet6; CFLAGS="-DINET6 $CFLAGS"])
175 if test "$v6type" != "unknown"; then
180 if test "$v6lib" != "none"; then
181 for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do
182 if test -d $dir -a -f $dir/lib$v6lib.a; then
183 LIBS="-L$dir $LIBS -l$v6lib"
191 AC_MSG_RESULT(["$v6type, $v6lib"])
195 # AC_ETHEREAL_GETHOSTBY_LIB_CHECK
197 # Checks whether we need "-lnsl" to get "gethostby*()", which we use
200 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
201 # GNU Autoconf 2.13; the comment came from there.
202 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
204 AC_DEFUN(AC_ETHEREAL_GETHOSTBY_LIB_CHECK,
206 # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
207 # to get the SysV transport functions.
208 # chad@anasazi.com says the Pyramid MIS-ES running DC/OSx (SVR4)
210 # The nsl library prevents programs from opening the X display
211 # on Irix 5.2, according to dickey@clark.net.
212 AC_CHECK_FUNC(gethostbyname)
213 if test $ac_cv_func_gethostbyname = no; then
214 AC_CHECK_LIB(nsl, gethostbyname, NSL_LIBS="-lnsl")
220 # AC_ETHEREAL_SOCKET_LIB_CHECK
222 # Checks whether we need "-lsocket" to get "socket()", which is used
223 # by libpcap on some platforms - and, in effect, "gethostby*()" on
224 # most if not all platforms (so that it can use NIS or DNS or...
225 # to look up host names).
227 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
228 # GNU Autoconf 2.13; the comment came from there.
229 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
231 # We use "connect" because that's what AC_PATH_XTRA did.
233 AC_DEFUN(AC_ETHEREAL_SOCKET_LIB_CHECK,
235 # lieder@skyler.mavd.honeywell.com says without -lsocket,
236 # socket/setsockopt and other routines are undefined under SCO ODT
237 # 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary
238 # on later versions), says simon@lia.di.epfl.ch: it contains
239 # gethostby* variants that don't use the nameserver (or something).
240 # -lsocket must be given before -lnsl if both are needed.
241 # We assume that if connect needs -lnsl, so does gethostbyname.
242 AC_CHECK_FUNC(connect)
243 if test $ac_cv_func_connect = no; then
244 AC_CHECK_LIB(socket, connect, SOCKET_LIBS="-lsocket",
245 AC_MSG_ERROR(Function 'socket' not found.), $NSL_LIBS)
247 AC_SUBST(SOCKET_LIBS)
251 # AC_ETHEREAL_PCAP_CHECK
253 AC_DEFUN(AC_ETHEREAL_PCAP_CHECK,
255 if test -z "$pcap_dir"
258 # The user didn't specify a directory in which libpcap resides;
259 # we assume that the current library search path will work,
260 # but we may have to look for the header in a "pcap"
261 # subdirectory of "/usr/include" or "/usr/local/include",
262 # as some systems apparently put "pcap.h" in a "pcap"
263 # subdirectory, and we also check "$prefix/include".
265 # XXX - should we just add "$prefix/include" to the include
266 # search path and "$prefix/lib" to the library search path?
268 AC_MSG_CHECKING(for extraneous pcap header directories)
270 for pcap_dir in /usr/include/pcap /usr/local/include/pcap $prefix/include
272 if test -d $pcap_dir ; then
273 CFLAGS="$CFLAGS -I$pcap_dir"
274 CPPFLAGS="$CPPFLAGS -I$pcap_dir"
275 found_pcap_dir=" $found_pcap_dir -I$pcap_dir"
279 if test "$found_pcap_dir" != "" ; then
280 AC_MSG_RESULT(found --$found_pcap_dir added to CFLAGS)
282 AC_MSG_RESULT(not found)
286 # The user specified a directory in which libpcap resides,
287 # so add the "include" subdirectory of that directory to
288 # the include file search path and the "lib" subdirectory
289 # of that directory to the library search path.
291 # XXX - if there's also a libpcap in a directory that's
292 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
293 # make us find the version in the specified directory,
294 # as the compiler and/or linker will search that other
295 # directory before it searches the specified directory.
297 CFLAGS="$CFLAGS -I$pcap_dir/include"
298 CPPFLAGS="$CPPFLAGS -I$pcap_dir/include"
299 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, $pcap_dir/lib)
303 AC_CHECK_HEADER(net/bpf.h,,
304 AC_MSG_ERROR([[Header file net/bpf.h not found; if you installed libpcap from source, did you also do \"make install-incl\"?]]))
305 AC_CHECK_HEADER(pcap.h,, AC_MSG_ERROR(Header file pcap.h not found.))
308 # Check to see if we find "pcap_open_live" in "-lpcap".
310 AC_CHECK_LIB(pcap, pcap_open_live,
313 AC_DEFINE(HAVE_LIBPCAP)
314 ], AC_MSG_ERROR(Library libpcap not found.),
315 $SOCKET_LIBS $NSL_LIBS)
320 # AC_ETHEREAL_PCAP_VERSION_CHECK
322 # Check whether "pcap_version" is defined by libpcap.
324 AC_DEFUN(AC_ETHEREAL_PCAP_VERSION_CHECK,
326 AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
328 LIBS="$PCAP_LIBS $SOCKET_LIBS $NSL_LIBS $LIBS"
332 return_pcap_version(void)
334 extern char pcap_version[];
339 ac_cv_pcap_version_defined=yes,
340 ac_cv_pcap_version_defined=no,
341 [echo $ac_n "cross compiling; assumed OK... $ac_c"])
343 if test "$ac_cv_pcap_version_defined" = yes ; then
345 AC_DEFINE(HAVE_PCAP_VERSION)
352 # AC_ETHEREAL_ZLIB_CHECK
354 AC_DEFUN(AC_ETHEREAL_ZLIB_CHECK,
357 # Make sure we have "zlib.h". If we don't, it means we probably
358 # don't have zlib, so don't use it.
360 AC_CHECK_HEADER(zlib.h,,enable_zlib=no)
362 if test x$enable_zlib != xno
365 # Well, we at least have the zlib header file.
367 # Check for "gzseek()" in zlib, because we need it, but
368 # some older versions of zlib don't have it. It appears
369 # from the zlib ChangeLog that any released version of zlib
370 # with "gzseek()" should have the other routines we
371 # depend on, such as "gztell()" and "zError()".
373 AC_CHECK_LIB(z, gzseek,,enable_zlib=no)
378 # AC_ETHEREAL_UCDSNMP_CHECK
380 AC_DEFUN(AC_ETHEREAL_UCDSNMP_CHECK,
385 [ --with-ucdsnmp=DIR use UCD SNMP client library, located in directory DIR.], [
386 if test $withval = no
391 ucdsnmp_user_dir=$withval
395 if test $want_ucdsnmp = yes
399 for d in $ucdsnmp_user_dir $prefix
403 AC_MSG_CHECKING($d for ucd-snmp)
405 if test x$d != x/usr/local && test -f $d/include/ucd-snmp/snmp.h
411 AC_MSG_RESULT(not found)
416 if test x$ucdsnmpdir != x
418 AC_MSG_RESULT(added $d to paths)
419 CFLAGS="$CFLAGS -I${ucdsnmpdir}/include"
420 CPPFLAGS="$CPPFLAGS -I${ucdsnmpdir}/include"
421 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${ucdsnmpdir}/lib)
427 # AC_ETHEREAL_SSL_CHECK
429 AC_DEFUN(AC_ETHEREAL_SSL_CHECK,
434 [ --with-ssl=DIR use SSL crypto library, located in directory DIR.], [
435 if test "x$withval" = "xno"; then
437 elif test "x$withval" = "xyes"; then
439 elif test -d "$withval"; then
441 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
445 if test "x$want_ssl" = "xdefaultyes"; then
447 withval=/usr/local/ssl
448 if test -d "$withval"; then
449 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
453 if test "x$want_ssl" = "xyes"; then
454 AC_CHECK_LIB(crypto, EVP_md5,
461 AC_MSG_RESULT(not required)