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 1.38 2002/01/20 23:05:22 gerald 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 AC_CHECK_LIB(nsl, gethostbyname, NSL_LIBS="-lnsl"))
218 # AC_ETHEREAL_SOCKET_LIB_CHECK
220 # Checks whether we need "-lsocket" to get "socket()", which is used
221 # by libpcap on some platforms - and, in effect, "gethostby*()" on
222 # most if not all platforms (so that it can use NIS or DNS or...
223 # to look up host names).
225 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
226 # GNU Autoconf 2.13; the comment came from there.
227 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
229 # We use "connect" because that's what AC_PATH_XTRA did.
231 AC_DEFUN(AC_ETHEREAL_SOCKET_LIB_CHECK,
233 # lieder@skyler.mavd.honeywell.com says without -lsocket,
234 # socket/setsockopt and other routines are undefined under SCO ODT
235 # 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary
236 # on later versions), says simon@lia.di.epfl.ch: it contains
237 # gethostby* variants that don't use the nameserver (or something).
238 # -lsocket must be given before -lnsl if both are needed.
239 # We assume that if connect needs -lnsl, so does gethostbyname.
240 AC_CHECK_FUNC(connect, ,
241 AC_CHECK_LIB(socket, connect, SOCKET_LIBS="-lsocket",
242 AC_MSG_ERROR(Function 'socket' not found.), $NSL_LIBS))
243 AC_SUBST(SOCKET_LIBS)
247 # AC_ETHEREAL_PCAP_CHECK
249 AC_DEFUN(AC_ETHEREAL_PCAP_CHECK,
251 if test -z "$pcap_dir"
254 # The user didn't specify a directory in which libpcap resides;
255 # we assume that the current library search path will work,
256 # but we may have to look for the header in a "pcap"
257 # subdirectory of "/usr/include" or "/usr/local/include",
258 # as some systems apparently put "pcap.h" in a "pcap"
259 # subdirectory, and we also check "$prefix/include".
261 # XXX - should we just add "$prefix/include" to the include
262 # search path and "$prefix/lib" to the library search path?
264 AC_MSG_CHECKING(for extraneous pcap header directories)
266 for pcap_dir in /usr/include/pcap /usr/local/include/pcap $prefix/include
268 if test -d $pcap_dir ; then
269 CFLAGS="$CFLAGS -I$pcap_dir"
270 CPPFLAGS="$CPPFLAGS -I$pcap_dir"
271 found_pcap_dir=" $found_pcap_dir -I$pcap_dir"
275 if test "$found_pcap_dir" != "" ; then
276 AC_MSG_RESULT(found --$found_pcap_dir added to CFLAGS)
278 AC_MSG_RESULT(not found)
282 # The user specified a directory in which libpcap resides,
283 # so add the "include" subdirectory of that directory to
284 # the include file search path and the "lib" subdirectory
285 # of that directory to the library search path.
287 # XXX - if there's also a libpcap in a directory that's
288 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
289 # make us find the version in the specified directory,
290 # as the compiler and/or linker will search that other
291 # directory before it searches the specified directory.
293 CFLAGS="$CFLAGS -I$pcap_dir/include"
294 CPPFLAGS="$CPPFLAGS -I$pcap_dir/include"
295 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, $pcap_dir/lib)
299 AC_CHECK_HEADER(net/bpf.h,,
300 AC_MSG_ERROR([[Header file net/bpf.h not found; if you installed libpcap from source, did you also do \"make install-incl\"?]]))
301 AC_CHECK_HEADER(pcap.h,, AC_MSG_ERROR(Header file pcap.h not found.))
304 # Check to see if we find "pcap_open_live" in "-lpcap".
306 AC_CHECK_LIB(pcap, pcap_open_live,
309 AC_DEFINE(HAVE_LIBPCAP)
310 ], AC_MSG_ERROR(Library libpcap not found.),
311 $SOCKET_LIBS $NSL_LIBS)
316 # AC_ETHEREAL_PCAP_VERSION_CHECK
318 # Check whether "pcap_version" is defined by libpcap.
320 AC_DEFUN(AC_ETHEREAL_PCAP_VERSION_CHECK,
322 AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
324 LIBS="$PCAP_LIBS $SOCKET_LIBS $NSL_LIBS $LIBS"
328 return_pcap_version(void)
330 extern char pcap_version[];
335 ac_cv_pcap_version_defined=yes,
336 ac_cv_pcap_version_defined=no,
337 [echo $ac_n "cross compiling; assumed OK... $ac_c"])
339 if test "$ac_cv_pcap_version_defined" = yes ; then
341 AC_DEFINE(HAVE_PCAP_VERSION)
348 # AC_ETHEREAL_ZLIB_CHECK
350 AC_DEFUN(AC_ETHEREAL_ZLIB_CHECK,
353 # Make sure we have "zlib.h". If we don't, it means we probably
354 # don't have zlib, so don't use it.
356 AC_CHECK_HEADER(zlib.h,,enable_zlib=no)
358 if test x$enable_zlib != xno
361 # Well, we at least have the zlib header file.
363 # Check for "gzseek()" in zlib, because we need it, but
364 # some older versions of zlib don't have it. It appears
365 # from the zlib ChangeLog that any released version of zlib
366 # with "gzseek()" should have the other routines we
367 # depend on, such as "gztell()", and "zError()".
368 # (I think they may also get "gzgets()", in which case
369 # we can get rid of our own private "gzgets()"
370 # implementation, as any zlib that's adequate for our
371 # purposes will have "gzgets()".)
373 AC_CHECK_LIB(z, gzseek,,enable_zlib=no)
376 if test x$enable_zlib != xno
379 # Well, we at least have the zlib header file and a zlib
382 # Now check for "gzseek()" in zlib when linking with the
383 # linker flags for GTK+ applications; people often grab
384 # XFree86 source and build and install it on their systems,
385 # and they appear sometimes to misconfigure XFree86 so that,
386 # even on systems with zlib, it assumes there is no zlib,
387 # so the XFree86 build process builds and installs its
388 # own zlib in the X11 library directory.
390 # The XFree86 zlib is an older version that lacks
391 # "gzseek()", and that's the zlib with which Ethereal
392 # gets linked, so the build of Ethereal fails.
394 ac_save_CFLAGS="$CFLAGS"
396 CFLAGS="$CFLAGS $GTK_CFLAGS"
397 LIBS="$GTK_LIBS -lz $LIBS"
398 AC_MSG_CHECKING([for gzseek missing when linking with X11])
399 AC_TRY_LINK_FUNC(gzseek, AC_MSG_RESULT(no),
402 AC_MSG_ERROR(old XFree86 zlib found - rebuild XFree86 using system zlib or configure Ethereal without compressed file support.)
404 CFLAGS="$ac_save_CFLAGS"
410 # AC_ETHEREAL_UCDSNMP_CHECK
412 AC_DEFUN(AC_ETHEREAL_UCDSNMP_CHECK,
417 [ --with-ucdsnmp=DIR use UCD SNMP client library, located in directory DIR.], [
418 if test $withval = no
423 ucdsnmp_user_dir=$withval
427 if test $want_ucdsnmp = yes
431 for d in $ucdsnmp_user_dir $prefix
435 AC_MSG_CHECKING($d for ucd-snmp)
437 if test x$d != x/usr/local && test -f $d/include/ucd-snmp/snmp.h
443 AC_MSG_RESULT(not found)
448 if test x$ucdsnmpdir != x
450 AC_MSG_RESULT(added $d to paths)
451 CFLAGS="$CFLAGS -I${ucdsnmpdir}/include"
452 CPPFLAGS="$CPPFLAGS -I${ucdsnmpdir}/include"
453 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${ucdsnmpdir}/lib)
459 # AC_ETHEREAL_SSL_CHECK
461 AC_DEFUN(AC_ETHEREAL_SSL_CHECK,
466 [ --with-ssl=DIR use SSL crypto library, located in directory DIR.], [
467 if test "x$withval" = "xno"; then
469 elif test "x$withval" = "xyes"; then
471 elif test -d "$withval"; then
473 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
477 if test "x$want_ssl" = "xdefaultyes"; then
479 withval=/usr/local/ssl
480 if test -d "$withval"; then
481 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
485 if test "x$want_ssl" = "xyes"; then
486 AC_CHECK_LIB(crypto, EVP_md5,
492 AC_MSG_RESULT(not required)
497 # AC_ETHEREAL_RPM_CHECK
498 # Looks for the rpm program, and checks to see if we can redefine "_topdir".
500 AC_DEFUN(AC_ETHEREAL_RPM_CHECK,
502 AC_CHECK_PROG(ac_cv_ethereal_have_rpm, rpm, "yes", "no")
503 if test "x$ac_cv_ethereal_have_rpm" = "xyes"; then
504 rpm --define '_topdir /tmp' > /dev/null 2>&1
505 AC_MSG_CHECKING(to see if we can redefine _topdir)
506 if test $? -eq 0 ; then
510 AC_MSG_RESULT(no. You'll have to build packages manually.)