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 1.62 2003/11/01 02:30:14 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 $ac_cv_ethereal_struct_sa_len = yes; then
91 AC_DEFINE(HAVE_SA_LEN, 1, [Define if sa_len field exists in struct sockaddr])
96 # AC_ETHEREAL_IPV6_STACK
98 # By Jun-ichiro "itojun" Hagino, <itojun@iijlab.net>
100 AC_DEFUN(AC_ETHEREAL_IPV6_STACK,
105 AC_MSG_CHECKING([ipv6 stack type])
106 for i in v6d toshiba kame inria zeta linux linux-glibc solaris8; do
110 #include </usr/local/v6/include/sys/types.h>
114 [v6type=$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 "`uname -s`" = "SunOS" && test "`uname -r`" = "5.8"; then
178 [CFLAGS="-DINET6 -DSOLARIS8_INET6 $CFLAGS"]
182 if test "$v6type" != "unknown"; then
187 if test "$v6lib" != "none"; then
188 for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do
189 if test -d $dir -a -f $dir/lib$v6lib.a; then
190 LIBS="-L$dir $LIBS -l$v6lib"
198 AC_MSG_RESULT(["$v6type, $v6lib"])
202 # AC_ETHEREAL_GETHOSTBY_LIB_CHECK
204 # Checks whether we need "-lnsl" to get "gethostby*()", which we use
207 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
208 # GNU Autoconf 2.13; the comment came from there.
209 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
211 AC_DEFUN(AC_ETHEREAL_GETHOSTBY_LIB_CHECK,
213 # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT,
214 # to get the SysV transport functions.
215 # chad@anasazi.com says the Pyramid MIS-ES running DC/OSx (SVR4)
217 # The nsl library prevents programs from opening the X display
218 # on Irix 5.2, according to dickey@clark.net.
219 AC_CHECK_FUNC(gethostbyname, ,
220 AC_CHECK_LIB(nsl, gethostbyname, NSL_LIBS="-lnsl"))
225 # AC_ETHEREAL_SOCKET_LIB_CHECK
227 # Checks whether we need "-lsocket" to get "socket()", which is used
228 # by libpcap on some platforms - and, in effect, "gethostby*()" on
229 # most if not all platforms (so that it can use NIS or DNS or...
230 # to look up host names).
232 # Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
233 # GNU Autoconf 2.13; the comment came from there.
234 # Done by Guy Harris <guy@alum.mit.edu> on 2000-01-14.
236 # We use "connect" because that's what AC_PATH_XTRA did.
238 AC_DEFUN(AC_ETHEREAL_SOCKET_LIB_CHECK,
240 # lieder@skyler.mavd.honeywell.com says without -lsocket,
241 # socket/setsockopt and other routines are undefined under SCO ODT
242 # 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary
243 # on later versions), says simon@lia.di.epfl.ch: it contains
244 # gethostby* variants that don't use the nameserver (or something).
245 # -lsocket must be given before -lnsl if both are needed.
246 # We assume that if connect needs -lnsl, so does gethostbyname.
247 AC_CHECK_FUNC(connect, ,
248 AC_CHECK_LIB(socket, connect, SOCKET_LIBS="-lsocket",
249 AC_MSG_ERROR(Function 'socket' not found.), $NSL_LIBS))
250 AC_SUBST(SOCKET_LIBS)
254 # AC_ETHEREAL_PCAP_CHECK
256 AC_DEFUN(AC_ETHEREAL_PCAP_CHECK,
258 if test -z "$pcap_dir"
261 # XXX need to set a var AC_CHECK_HEADER(pcap.h,,)
264 # The user didn't specify a directory in which libpcap resides;
265 # we assume that the current library search path will work,
266 # but we may have to look for the header in a "pcap"
267 # subdirectory of "/usr/include" or "/usr/local/include",
268 # as some systems apparently put "pcap.h" in a "pcap"
269 # subdirectory, and we also check "$prefix/include" - and
270 # "$prefix/include/pcap", in case $prefix is set to
271 # "/usr/include" or "/usr/local/include".
273 # XXX - should we just add "$prefix/include" to the include
274 # search path and "$prefix/lib" to the library search path?
276 AC_MSG_CHECKING(for extraneous pcap header directories)
278 for pcap_dir in /usr/include/pcap $prefix/include/pcap $prefix/include /usr/local/include/pcap
280 if test -d $pcap_dir ; then
281 if test x$pcap_dir != x/usr/include -a x$pcap_dir != x/usr/local/include ; then
282 CFLAGS="$CFLAGS -I$pcap_dir"
283 CPPFLAGS="$CPPFLAGS -I$pcap_dir"
285 found_pcap_dir=" $found_pcap_dir -I$pcap_dir"
290 if test "$found_pcap_dir" != "" ; then
291 AC_MSG_RESULT(found --$found_pcap_dir added to CFLAGS)
293 AC_MSG_RESULT(not found)
297 # The user specified a directory in which libpcap resides,
298 # so add the "include" subdirectory of that directory to
299 # the include file search path and the "lib" subdirectory
300 # of that directory to the library search path.
302 # XXX - if there's also a libpcap in a directory that's
303 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
304 # make us find the version in the specified directory,
305 # as the compiler and/or linker will search that other
306 # directory before it searches the specified directory.
308 CFLAGS="$CFLAGS -I$pcap_dir/include"
309 CPPFLAGS="$CPPFLAGS -I$pcap_dir/include"
310 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, $pcap_dir/lib)
314 AC_CHECK_HEADER(pcap.h,,
315 AC_MSG_ERROR([[Header file pcap.h not found; if you installed libpcap
316 from source, did you also do \"make install-incl\", and if you installed a
317 binary package of libpcap, is there also a developer's package of libpcap,
318 and did you also install that package?]]))
321 # Check to see if we find "pcap_open_live" in "-lpcap".
323 AC_CHECK_LIB(pcap, pcap_open_live,
326 AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library])
327 ], [AC_MSG_ERROR(Library libpcap not found.)],
328 $SOCKET_LIBS $NSL_LIBS)
332 # Check whether various variables and functions are defined by
336 AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
337 LIBS="$PCAP_LIBS $SOCKET_LIBS $NSL_LIBS $LIBS"
341 extern char *pcap_version;
344 printf ("%s\n", pcap_version);
346 ac_cv_pcap_version_defined=yes,
347 ac_cv_pcap_version_defined=no,
348 [echo $ac_n "cross compiling; assumed OK... $ac_c"])
349 if test "$ac_cv_pcap_version_defined" = yes ; then
351 AC_DEFINE(HAVE_PCAP_VERSION, 1, [Define if libpcap version is known])
355 AC_CHECK_FUNCS(pcap_findalldevs pcap_lib_version pcap_compile_nopcap)
356 AC_CHECK_FUNCS(pcap_datalink_val_to_name pcap_datalink_name_to_val)
357 AC_CHECK_FUNCS(pcap_list_datalinks pcap_set_datalink)
362 # AC_ETHEREAL_ZLIB_CHECK
364 AC_DEFUN(AC_ETHEREAL_ZLIB_CHECK,
366 if test "x$zlib_dir" != "x"
369 # The user specified a directory in which zlib resides,
370 # so add the "include" subdirectory of that directory to
371 # the include file search path and the "lib" subdirectory
372 # of that directory to the library search path.
374 # XXX - if there's also a zlib in a directory that's
375 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
376 # make us find the version in the specified directory,
377 # as the compiler and/or linker will search that other
378 # directory before it searches the specified directory.
380 ethereal_save_CFLAGS="$CFLAGS"
381 CFLAGS="$CFLAGS -I$zlib_dir/include"
382 ethereal_save_CPPLAGS="$CPPLAGS"
383 CPPFLAGS="$CPPFLAGS -I$zlib_dir/include"
384 ethereal_save_LIBS="$LIBS"
385 AC_ETHEREAL_ADD_DASH_L(LIBS, $zlib_dir/lib)
389 # Make sure we have "zlib.h". If we don't, it means we probably
390 # don't have zlib, so don't use it.
392 AC_CHECK_HEADER(zlib.h,,
394 if test "x$zlib_dir" != "x"
397 # The user used "--with-zlib=" to specify a directory
398 # containing zlib, but we didn't find the header file
399 # there; that either means they didn't specify the
400 # right directory or are confused about whether zlib
401 # is, in fact, installed. Report the error and give up.
403 AC_MSG_ERROR([zlib header not found in directory specified in --with-zlib])
405 if test "x$want_zlib" = "xyes"
408 # The user tried to force us to use the library, but we
409 # couldn't find the header file; report an error.
411 AC_MSG_ERROR(Header file zlib.h not found.)
414 # We couldn't find the header file; don't use the
415 # library, as it's probably not present.
422 if test "x$want_zlib" != "xno"
425 # Well, we at least have the zlib header file.
427 # Check for "gzgets()" in zlib, because we need it, but
428 # some older versions of zlib don't have it. It appears
429 # from the zlib ChangeLog that any released version of zlib
430 # with "gzgets()" should have the other routines we
431 # depend on, such as "gzseek()", "gztell()", and "zError()".
433 # Another reason why we require "gzgets()" is that
434 # some versions of zlib that didn't have it, such
435 # as 1.0.8, had a bug in "gzseek()" that meant that it
436 # doesn't work correctly on uncompressed files; this
437 # means we cannot use version 1.0.8. (Unfortunately,
438 # that's the version that comes with recent X11 source,
439 # and many people who install XFree86 on their Slackware
440 # boxes don't realize that they should configure it to
441 # use the native zlib rather than building and installing
442 # the crappy old version that comes with XFree86.)
444 # I.e., we can't just avoid using "gzgets()", as
445 # versions of zlib without "gzgets()" are likely to have
446 # a broken "gzseek()".
448 AC_CHECK_LIB(z, gzgets,
450 if test "x$zlib_dir" != "x"
453 # Put the "-I" and "-L" flags for zlib at
454 # the beginning of CFLAGS, CPPFLAGS, and
458 AC_ETHEREAL_ADD_DASH_L(LIBS, $zlib_dir/lib)
459 LIBS="$LIBS -lz $ethereal_save_LIBS"
463 AC_DEFINE(HAVE_LIBZ, 1, [Define to use libz library])
465 if test "x$zlib_dir" != "x"
468 # Restore the versions of CFLAGS, CPPFLAGS,
469 # and LIBS before we added the "-with-zlib="
470 # directory, as we didn't actually find
471 # zlib there, or didn't find a zlib that
472 # contains gzgets there.
474 CFLAGS="$ethereal_save_CFLAGS"
475 CPPFLAGS="$ethereal_save_CPPLAGS"
476 LIBS="$ethereal_save_LIBS"
482 if test "x$want_zlib" != "xno"
485 # Well, we at least have the zlib header file and a zlib
488 # Now check for "gzgets()" in zlib when linking with the
489 # linker flags for GTK+ applications; people often grab
490 # XFree86 source and build and install it on their systems,
491 # and they appear sometimes to misconfigure XFree86 so that,
492 # even on systems with zlib, it assumes there is no zlib,
493 # so the XFree86 build process builds and installs its
494 # own zlib in the X11 library directory.
496 # The XFree86 zlib is an older version that lacks
497 # "gzgets()", and that's the zlib with which Ethereal
498 # gets linked, so the build of Ethereal fails.
500 ac_save_CFLAGS="$CFLAGS"
502 CFLAGS="$CFLAGS $GTK_CFLAGS"
503 LIBS="$GTK_LIBS -lz $LIBS"
504 AC_MSG_CHECKING([for gzgets missing when linking with X11])
505 AC_TRY_LINK_FUNC(gzgets, AC_MSG_RESULT(no),
508 AC_MSG_ERROR(old zlib found when linking with X11 - get rid of old zlib.)
510 CFLAGS="$ac_save_CFLAGS"
516 # AC_ETHEREAL_UCDSNMP_CHECK
518 AC_DEFUN(AC_ETHEREAL_UCDSNMP_CHECK,
520 if test "x$ucdsnmp_dir" != "x"
523 # The user specified a directory in which UCD SNMP resides,
524 # so add the "include" subdirectory of that directory to
525 # the include file search path and the "lib" subdirectory
526 # of that directory to the library search path.
528 # XXX - if there's also a libpcap in a directory that's
529 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
530 # make us find the version in the specified directory,
531 # as the compiler and/or linker will search that other
532 # directory before it searches the specified directory.
534 CFLAGS="$CFLAGS -I$ucdsnmp_dir/include"
535 CPPFLAGS="$CPPFLAGS -I$ucdsnmp_dir/include"
536 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, $ucdsnmp_dir/lib)
540 # Check for one of the UCD SNMP header files we include,
541 # to see whether we have UCD SNMP installed.
543 AC_CHECK_HEADER(ucd-snmp/ucd-snmp-config.h,
546 # UCD SNMP or Net-SNMP might require various helper
547 # libraries on various platforms, such as "-ldes425"
548 # in "/usr/kerberos/lib" on some versions of Red
549 # Hat Linux, or "-lkstat" on Solaris.
550 # XXX - it may also require "-lcrypto" on some platforms;
551 # we should check for that as well, rather than requiring
552 # users to explicitly indicate whether it's required.
554 # XXX - autoconf really needs a way to test for
555 # a given routine in a given library *and* to test
556 # whether additional "-L"/"-R"/whatever flags are
557 # needed *before* the "-l" flag for the library
558 # and to test whether additional libraries are
559 # needed after the library *and* to cache all that
562 for extras in "" "-L/usr/kerberos/lib -ldes425" "-lkstat"
564 AC_CHECK_LIB(snmp, sprint_realloc_objid,
566 SNMP_LIBS="-lsnmp $extras"; break
570 # Throw away the cached "we didn't find it"
571 # answer, so that if we rerun "configure",
572 # we still do all these checks and don't
573 # just blithely assume we don't need
574 # the extra libraries.
576 unset ac_cv_lib_snmp_sprint_realloc_objid
577 ], $SOCKET_LIBS $NSL_LIBS $SSL_LIBS $extras)
581 # If we didn't find "sprint_realloc_objid()", fail.
582 # Either the user needs a newer version of UCD SNMP
583 # with "sprint_realloc_objid()", or they may need to
584 # specify "--with-ssl".
586 if test "$ac_cv_lib_snmp_sprint_realloc_objid" = no; then
587 AC_MSG_ERROR([UCD SNMP header files found, but sprint_realloc_objid not found in SNMP library.])
591 # We found it, so we have UCD SNMP.
593 AC_DEFINE(HAVE_UCD_SNMP, 1, [Define to enable support for UCD-SNMP])
597 # No, we don't have it.
598 # If the user explicitly asked for UCD SNMP, fail,
599 # otherwise just don't use the UCD SNMP library.
601 if test "x$want_ucdsnmp" = "xyes" ; then
602 AC_MSG_ERROR(Header file ucd-snmp/snmp.h not found.)
608 # AC_ETHEREAL_SSL_CHECK
610 AC_DEFUN(AC_ETHEREAL_SSL_CHECK,
615 changequote(<<, >>)dnl
616 << --with-ssl[=DIR] use SSL crypto library (located in directory DIR, if supplied). [default=yes, if present]>>,
619 if test "x$withval" = "xno"; then
621 elif test "x$withval" = "xyes"; then
623 elif test -d "$withval"; then
625 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
629 if test "x$want_ssl" = "xdefaultyes"; then
631 withval=/usr/local/ssl
632 if test -d "$withval"; then
633 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
637 if test "x$want_ssl" = "xyes"; then
638 AC_CHECK_LIB(crypto, EVP_md5,
644 AC_MSG_RESULT(not required)
649 # AC_ETHEREAL_RPM_CHECK
650 # Looks for the rpm program, and checks to see if we can redefine "_topdir".
652 AC_DEFUN(AC_ETHEREAL_RPM_CHECK,
654 AC_CHECK_PROG(ac_cv_ethereal_have_rpm, rpm, "yes", "no")
655 if test "x$ac_cv_ethereal_have_rpm" = "xyes"; then
656 rpm --define '_topdir /tmp' > /dev/null 2>&1
657 AC_MSG_CHECKING(to see if we can redefine _topdir)
658 if test $? -eq 0 ; then
662 AC_MSG_RESULT(no. You'll have to build packages manually.)
669 # AC_ETHEREAL_GNU_SED_CHECK
670 # Checks if GNU sed is the first sed in PATH.
672 AC_DEFUN([AC_ETHEREAL_GNU_SED_CHECK],
674 AC_MSG_CHECKING(for GNU sed as first sed in PATH)
675 if ( sh -c "sed --version" </dev/null 2> /dev/null | grep "GNU sed" 2>&1 > /dev/null ) ; then
685 # AC_ETHEREAL_ADNS_CHECK
687 AC_DEFUN(AC_ETHEREAL_ADNS_CHECK,
692 changequote(<<, >>)dnl
693 << --with-adns[=DIR] use GNU ADNS (located in directory DIR, if supplied). [default=yes, if present]>>,
696 if test "x$withval" = "xno"; then
698 elif test "x$withval" = "xyes"; then
700 elif test -d "$withval"; then
702 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
706 if test "x$want_adns" = "xdefaultyes"; then
709 if test -d "$withval"; then
710 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
714 if test "x$want_adns" = "xyes"; then
715 AC_CHECK_LIB(adns, adns_init,
718 AC_DEFINE(HAVE_GNU_ADNS, 1, [Define to use GNU ADNS library])
723 AC_MSG_RESULT(not required)