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 1.44 2002/04/08 01:34:38 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 $ac_cv_ethereal_struct_sa_len = yes; then
91 AC_DEFINE(HAVE_SA_LEN)
96 # AC_ETHEREAL_IPV6_STACK
98 # By Jun-ichiro "itojun" Hagino, <itojun@iijlab.net>
100 AC_DEFUN(AC_ETHEREAL_IPV6_STACK,
105 AC_MSG_CHECKING([ipv6 stack type])
106 for i in v6d toshiba kame inria zeta linux linux-glibc solaris8; do
110 #include </usr/local/v6/include/sys/types.h>
114 [v6type=$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 # The user didn't specify a directory in which libpcap resides;
262 # we assume that the current library search path will work,
263 # but we may have to look for the header in a "pcap"
264 # subdirectory of "/usr/include" or "/usr/local/include",
265 # as some systems apparently put "pcap.h" in a "pcap"
266 # subdirectory, and we also check "$prefix/include".
268 # XXX - should we just add "$prefix/include" to the include
269 # search path and "$prefix/lib" to the library search path?
271 AC_MSG_CHECKING(for extraneous pcap header directories)
273 for pcap_dir in /usr/include/pcap /usr/local/include/pcap $prefix/include
275 if test -d $pcap_dir ; then
276 CFLAGS="$CFLAGS -I$pcap_dir"
277 CPPFLAGS="$CPPFLAGS -I$pcap_dir"
278 found_pcap_dir=" $found_pcap_dir -I$pcap_dir"
282 if test "$found_pcap_dir" != "" ; then
283 AC_MSG_RESULT(found --$found_pcap_dir added to CFLAGS)
285 AC_MSG_RESULT(not found)
289 # The user specified a directory in which libpcap resides,
290 # so add the "include" subdirectory of that directory to
291 # the include file search path and the "lib" subdirectory
292 # of that directory to the library search path.
294 # XXX - if there's also a libpcap in a directory that's
295 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
296 # make us find the version in the specified directory,
297 # as the compiler and/or linker will search that other
298 # directory before it searches the specified directory.
300 CFLAGS="$CFLAGS -I$pcap_dir/include"
301 CPPFLAGS="$CPPFLAGS -I$pcap_dir/include"
302 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, $pcap_dir/lib)
306 AC_CHECK_HEADER(net/bpf.h,,
307 AC_MSG_ERROR([[Header file net/bpf.h not found; if you installed libpcap from source, did you also do \"make install-incl\"?]]))
308 AC_CHECK_HEADER(pcap.h,, AC_MSG_ERROR(Header file pcap.h not found.))
311 # Check to see if we find "pcap_open_live" in "-lpcap".
313 AC_CHECK_LIB(pcap, pcap_open_live,
316 AC_DEFINE(HAVE_LIBPCAP)
317 ], AC_MSG_ERROR(Library libpcap not found.),
318 $SOCKET_LIBS $NSL_LIBS)
323 # AC_ETHEREAL_PCAP_VERSION_CHECK
325 # Check whether "pcap_version" is defined by libpcap.
327 AC_DEFUN(AC_ETHEREAL_PCAP_VERSION_CHECK,
329 AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
331 LIBS="$PCAP_LIBS $SOCKET_LIBS $NSL_LIBS $LIBS"
335 return_pcap_version(void)
337 extern char pcap_version[];
342 ac_cv_pcap_version_defined=yes,
343 ac_cv_pcap_version_defined=no,
344 [echo $ac_n "cross compiling; assumed OK... $ac_c"])
346 if test "$ac_cv_pcap_version_defined" = yes ; then
348 AC_DEFINE(HAVE_PCAP_VERSION)
355 # AC_ETHEREAL_ZLIB_CHECK
357 AC_DEFUN(AC_ETHEREAL_ZLIB_CHECK,
359 if test "x$zlib_dir" != "x"
362 # The user specified a directory in which zlib resides,
363 # so add the "include" subdirectory of that directory to
364 # the include file search path and the "lib" subdirectory
365 # of that directory to the library search path.
367 # XXX - if there's also a zlib in a directory that's
368 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
369 # make us find the version in the specified directory,
370 # as the compiler and/or linker will search that other
371 # directory before it searches the specified directory.
373 ethereal_save_CFLAGS="$CFLAGS"
374 CFLAGS="$CFLAGS -I$zlib_dir/include"
375 ethereal_save_CPPLAGS="$CPPLAGS"
376 CPPFLAGS="$CPPFLAGS -I$zlib_dir/include"
377 ethereal_save_LIBS="$LIBS"
378 AC_ETHEREAL_ADD_DASH_L(LIBS, $zlib_dir/lib)
382 # Make sure we have "zlib.h". If we don't, it means we probably
383 # don't have zlib, so don't use it.
385 AC_CHECK_HEADER(zlib.h,,
387 if test "x$zlib_dir" != "x"
390 # The user used "--with-zlib=" to specify a directory
391 # containing zlib, but we didn't find the header file
392 # there; that either means they didn't specify the
393 # right directory or are confused about whether zlib
394 # is, in fact, installed. Report the error and give up.
396 AC_MSG_ERROR([zlib header not found in directory specified in --with-zlib])
398 if test "x$want_zlib" = "xyes"
401 # The user tried to force us to use the library, but we
402 # couldn't find the header file; report an error.
404 AC_MSG_ERROR(Header file zlib.h not found.)
407 # We couldn't find the header file; don't use the
408 # library, as it's probably not present.
415 if test "x$want_zlib" != "xno"
418 # Well, we at least have the zlib header file.
420 # Check for "gzgets()" in zlib, because we need it, but
421 # some older versions of zlib don't have it. It appears
422 # from the zlib ChangeLog that any released version of zlib
423 # with "gzgets()" should have the other routines we
424 # depend on, such as "gzseek()", "gztell()", and "zError()".
426 # Another reason why we require "gzgets()" is that
427 # some versions of zlib that didn't have it, such
428 # as 1.0.8, had a bug in "gzseek()" that meant that it
429 # doesn't work correctly on uncompressed files; this
430 # means we cannot use version 1.0.8. (Unfortunately,
431 # that's the version that comes with recent X11 source,
432 # and many people who install XFree86 on their Slackware
433 # boxes don't realize that they should configure it to
434 # use the native zlib rather than building and installing
435 # the crappy old version that comes with XFree86.)
437 # I.e., we can't just avoid using "gzgets()", as
438 # versions of zlib without "gzgets()" are likely to have
439 # a broken "gzseek()".
441 AC_CHECK_LIB(z, gzgets,
443 if test "x$zlib_dir" != "x"
446 # Put the "-I" and "-L" flags for zlib at
447 # the beginning of CFLAGS, CPPFLAGS, and
451 AC_ETHEREAL_ADD_DASH_L(LIBS, $zlib_dir/lib)
452 LIBS="$LIBS -lz $ethereal_save_LIBS"
458 if test "x$zlib_dir" != "x"
461 # Restore the versions of CFLAGS, CPPFLAGS,
462 # and LIBS before we added the "-with-zlib="
463 # directory, as we didn't actually find
464 # zlib there, or didn't find a zlib that
465 # contains gzgets there.
467 CFLAGS="$ethereal_save_CFLAGS"
468 CPPFLAGS="$ethereal_save_CPPLAGS"
469 LIBS="$ethereal_save_LIBS"
475 if test "x$want_zlib" != "xno"
478 # Well, we at least have the zlib header file and a zlib
481 # Now check for "gzgets()" in zlib when linking with the
482 # linker flags for GTK+ applications; people often grab
483 # XFree86 source and build and install it on their systems,
484 # and they appear sometimes to misconfigure XFree86 so that,
485 # even on systems with zlib, it assumes there is no zlib,
486 # so the XFree86 build process builds and installs its
487 # own zlib in the X11 library directory.
489 # The XFree86 zlib is an older version that lacks
490 # "gzgets()", and that's the zlib with which Ethereal
491 # gets linked, so the build of Ethereal fails.
493 ac_save_CFLAGS="$CFLAGS"
495 CFLAGS="$CFLAGS $GTK_CFLAGS"
496 LIBS="$GTK_LIBS -lz $LIBS"
497 AC_MSG_CHECKING([for gzgets missing when linking with X11])
498 AC_TRY_LINK_FUNC(gzgets, AC_MSG_RESULT(no),
501 AC_MSG_ERROR(old zlib found when linking with X11 - get rid of old zlib.)
503 CFLAGS="$ac_save_CFLAGS"
509 # AC_ETHEREAL_UCDSNMP_CHECK
511 AC_DEFUN(AC_ETHEREAL_UCDSNMP_CHECK,
513 if test "x$ucdsnmp_dir" != "x"
516 # The user specified a directory in which UCD SNMP resides,
517 # so add the "include" subdirectory of that directory to
518 # the include file search path and the "lib" subdirectory
519 # of that directory to the library search path.
521 # XXX - if there's also a libpcap in a directory that's
522 # already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
523 # make us find the version in the specified directory,
524 # as the compiler and/or linker will search that other
525 # directory before it searches the specified directory.
527 CFLAGS="$CFLAGS -I$ucdsnmp_dir/include"
528 CPPFLAGS="$CPPFLAGS -I$ucdsnmp_dir/include"
529 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, $ucdsnmp_dir/lib)
533 # Check for the UCD SNMP header file, to see whether we
534 # have UCD SNMP installed.
536 AC_CHECK_HEADER(ucd-snmp/snmp.h,
540 # Do we have <ucd-snmp/version.h>? It's not required,
541 # but if it's not present we can't report the version number.
543 AC_CHECK_HEADERS(ucd-snmp/version.h)
546 # UCD SNMP may require "-lkstat" on Solaris, sigh.
547 # XXX - it may also require "-lcrypto" on some platforms;
548 # we should check for that as well, rather than requiring
549 # users to explicitly indicate whether it's required.
551 AC_CHECK_LIB(snmp, sprint_realloc_objid,
555 # Throw away the cached "we didn't find it" answer.
557 unset ac_cv_lib_snmp_sprint_realloc_objid
558 AC_CHECK_LIB(snmp, sprint_realloc_objid,
561 # Throw away the cached "we found it" answer, so
562 # that if we rerun "configure", we don't just blow
563 # off this check and blithely assume that we don't
566 # XXX - autoconf really needs a way to test for
567 # a given routine in a given library *and* to test
568 # whether additional "-L"/"-R"/whatever flags are
569 # needed *before* the "-l" flag for the library
570 # and to test whether additional libraries are
571 # needed after the library *and* to cache all that
574 unset ac_cv_lib_snmp_sprint_realloc_objid
575 SNMP_LIBS="-lsnmp -lkstat"
576 ],,$SOCKET_LIBS $NSL_LIBS $SSL_LIBS -lkstat
578 ], $SOCKET_LIBS $NSL_LIBS $SSL_LIBS
582 # If we didn't find "sprint_realloc_objid()", fail.
583 # Either the user needs a newer version of UCD SNMP
584 # with "sprint_realloc_objid()", or they may need to
585 # specify "--with-ssl".
587 if test "$ac_cv_lib_snmp_sprint_realloc_objid" = no; then
588 AC_MSG_ERROR([UCD SNMP header files found, but sprint_realloc_objid not found in SNMP library.])
592 # We found it, so we have UCD SNMP.
594 AC_DEFINE(HAVE_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$want_ucdsnmp" = "xyes" ; then
602 AC_MSG_ERROR(Header file ucd-snmp/snmp.h not found.)
608 # AC_ETHEREAL_SSL_CHECK
610 AC_DEFUN(AC_ETHEREAL_SSL_CHECK,
615 [ --with-ssl=DIR use SSL crypto library, located in directory DIR.], [
616 if test "x$withval" = "xno"; then
618 elif test "x$withval" = "xyes"; then
620 elif test -d "$withval"; then
622 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
626 if test "x$want_ssl" = "xdefaultyes"; then
628 withval=/usr/local/ssl
629 if test -d "$withval"; then
630 AC_ETHEREAL_ADD_DASH_L(LDFLAGS, ${withval}/lib)
634 if test "x$want_ssl" = "xyes"; then
635 AC_CHECK_LIB(crypto, EVP_md5,
641 AC_MSG_RESULT(not required)
646 # AC_ETHEREAL_RPM_CHECK
647 # Looks for the rpm program, and checks to see if we can redefine "_topdir".
649 AC_DEFUN(AC_ETHEREAL_RPM_CHECK,
651 AC_CHECK_PROG(ac_cv_ethereal_have_rpm, rpm, "yes", "no")
652 if test "x$ac_cv_ethereal_have_rpm" = "xyes"; then
653 rpm --define '_topdir /tmp' > /dev/null 2>&1
654 AC_MSG_CHECKING(to see if we can redefine _topdir)
655 if test $? -eq 0 ; then
659 AC_MSG_RESULT(no. You'll have to build packages manually.)
666 # AC_ETHEREAL_GNU_SED_CHECK
667 # Checks if GNU sed is the first sed in PATH.
669 AC_DEFUN([AC_ETHEREAL_GNU_SED_CHECK],
671 AC_MSG_CHECKING(for GNU sed as first sed in PATH)
672 if ( sh -c "sed --version" </dev/null 2> /dev/null | grep "GNU sed" 2>&1 > /dev/null ) ; then