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acinclude.m4
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acinclude.m4
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dnl Macros that test for specific features.
dnl This file is part of the Autoconf packaging for Wireshark.
dnl Copyright (C) 1998-2000 by Gerald Combs.
dnl
dnl $Id$
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2, or (at your option)
dnl any later version.
dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
dnl 02111-1307, USA.
dnl
dnl As a special exception, the Free Software Foundation gives unlimited
dnl permission to copy, distribute and modify the configure scripts that
dnl are the output of Autoconf. You need not follow the terms of the GNU
dnl General Public License when using or distributing such scripts, even
dnl though portions of the text of Autoconf appear in them. The GNU
dnl General Public License (GPL) does govern all other use of the material
dnl that constitutes the Autoconf program.
dnl
dnl Certain portions of the Autoconf source text are designed to be copied
dnl (in certain cases, depending on the input) into the output of
dnl Autoconf. We call these the "data" portions. The rest of the Autoconf
dnl source text consists of comments plus executable code that decides which
dnl of the data portions to output in any given case. We call these
dnl comments and executable code the "non-data" portions. Autoconf never
dnl copies any of the non-data portions into its output.
dnl
dnl This special exception to the GPL applies to versions of Autoconf
dnl released by the Free Software Foundation. When you make and
dnl distribute a modified version of Autoconf, you may extend this special
dnl exception to the GPL to apply to your modified version as well, *unless*
dnl your modified version has the potential to copy into its output some
dnl of the text that was the non-data portion of the version that you started
dnl with. (In other words, unless your change moves or copies text from
dnl the non-data portions to the data portions.) If your modification has
dnl such potential, you must delete any notice of this special exception
dnl to the GPL from your modified version.
dnl
dnl Written by David MacKenzie, with help from
dnl Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
dnl Roland McGrath, Noah Friedman, david d zuhn, and many others.
#
# AC_WIRESHARK_ADD_DASH_L
#
# Add to the variable specified as the first argument a "-L" flag for the
# directory specified as the second argument, and, on Solaris, add a
# "-R" flag for it as well.
#
# XXX - IRIX, and other OSes, may require some flag equivalent to
# "-R" here.
#
AC_DEFUN([AC_WIRESHARK_ADD_DASH_L],
[$1="$$1 -L$2"
case "$host_os" in
solaris*)
$1="$$1 -R$2"
;;
esac
])
#
# AC_WIRESHARK_TIMEZONE_ABBREV
#
AC_DEFUN([AC_WIRESHARK_TIMEZONE_ABBREV],
[
AC_CACHE_CHECK([for tm_zone in struct tm],
ac_cv_wireshark_have_tm_zone,
[
AC_TRY_COMPILE(
[#include <time.h>],
[struct tm t; t.tm_zone;],
ac_cv_wireshark_have_tm_zone=yes,
ac_cv_wireshark_have_tm_zone=no)
])
if test $ac_cv_wireshark_have_tm_zone = yes; then
AC_DEFINE(HAVE_TM_ZONE, 1, [Define if tm_zone field exists in struct tm])
else
AC_CACHE_CHECK([for tzname],
ac_cv_wireshark_have_tzname,
[
AC_TRY_LINK(
[#include <time.h>
#include <stdio.h>],
[printf("%s", tzname[0]);],
ac_cv_wireshark_have_tzname=yes,
ac_cv_wireshark_have_tzname=no)
])
if test $ac_cv_wireshark_have_tzname = yes; then
AC_DEFINE(HAVE_TZNAME, 1, [Define if tzname array exists])
fi
fi
])
#
# AC_WIRESHARK_STRUCT_SA_LEN
#
dnl AC_STRUCT_ST_BLKSIZE extracted from the file in question,
dnl "acspecific.m4" in GNU Autoconf 2.12, and turned into
dnl AC_WIRESHARK_STRUCT_SA_LEN, which checks if "struct sockaddr"
dnl has the 4.4BSD "sa_len" member, and defines HAVE_SA_LEN; that's
dnl what's in this file.
dnl Done by Guy Harris <[email protected]> on 1998-11-14.
dnl ### Checks for structure members
AC_DEFUN([AC_WIRESHARK_STRUCT_SA_LEN],
[AC_CACHE_CHECK([for sa_len in struct sockaddr], ac_cv_wireshark_struct_sa_len,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/socket.h>], [struct sockaddr s; s.sa_len;],
ac_cv_wireshark_struct_sa_len=yes, ac_cv_wireshark_struct_sa_len=no)])
if test $ac_cv_wireshark_struct_sa_len = yes; then
AC_DEFINE(HAVE_SA_LEN, 1, [Define if sa_len field exists in struct sockaddr])
fi
])
#
# AC_WIRESHARK_IPV6_STACK
#
# By Jun-ichiro "itojun" Hagino, <[email protected]>
#
AC_DEFUN([AC_WIRESHARK_IPV6_STACK],
[
v6type=unknown
v6lib=none
AC_MSG_CHECKING([ipv6 stack type])
for i in v6d toshiba kame inria zeta linux linux-glibc solaris8; do
case $i in
v6d)
AC_EGREP_CPP(yes, [
#include </usr/local/v6/include/sys/types.h>
#ifdef __V6D__
yes
#endif],
[v6type=$i; v6lib=v6;
v6libdir=/usr/local/v6/lib;
CFLAGS="-I/usr/local/v6/include $CFLAGS"])
;;
toshiba)
AC_EGREP_CPP(yes, [
#include <sys/param.h>
#ifdef _TOSHIBA_INET6
yes
#endif],
[v6type=$i; v6lib=inet6;
v6libdir=/usr/local/v6/lib;
CFLAGS="-DINET6 $CFLAGS"])
;;
kame)
AC_EGREP_CPP(yes, [
#include <netinet/in.h>
#ifdef __KAME__
yes
#endif],
[v6type=$i; v6lib=inet6;
v6libdir=/usr/local/v6/lib;
CFLAGS="-DINET6 $CFLAGS"])
;;
inria)
AC_EGREP_CPP(yes, [
#include <netinet/in.h>
#ifdef IPV6_INRIA_VERSION
yes
#endif],
[v6type=$i; CFLAGS="-DINET6 $CFLAGS"])
;;
zeta)
AC_EGREP_CPP(yes, [
#include <sys/param.h>
#ifdef _ZETA_MINAMI_INET6
yes
#endif],
[v6type=$i; v6lib=inet6;
v6libdir=/usr/local/v6/lib;
CFLAGS="-DINET6 $CFLAGS"])
;;
linux)
if test -d /usr/inet6; then
v6type=$i
v6lib=inet6
v6libdir=/usr/inet6
CFLAGS="-DINET6 $CFLAGS"
fi
;;
linux-glibc)
AC_EGREP_CPP(yes, [
#include <features.h>
#if defined(__GLIBC__) && defined(__GLIBC_MINOR__)
#if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || __GLIBC__ > 2
yes
#endif
#endif],
[v6type=$i; v6lib=inet6; CFLAGS="-DINET6 $CFLAGS"])
;;
solaris8)
if test "`uname -s`" = "SunOS" && test "`uname -r`" = "5.8"; then
v6type=$i
v6lib=inet6
[CFLAGS="-DINET6 -DSOLARIS8_INET6 $CFLAGS"]
fi
;;
esac
if test "$v6type" != "unknown"; then
break
fi
done
if test "$v6lib" != "none"; then
for dir in $v6libdir /usr/local/v6/lib /usr/local/lib; do
if test -d $dir -a -f $dir/lib$v6lib.a; then
LIBS="-L$dir $LIBS -l$v6lib"
break
fi
done
enable_ipv6="yes"
else
enable_ipv6="no"
fi
AC_MSG_RESULT(["$v6type, $v6lib"])
])
#
# AC_WIRESHARK_GETHOSTBY_LIB_CHECK
#
# Checks whether we need "-lnsl" to get "gethostby*()", which we use
# in "resolv.c".
#
# Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
# GNU Autoconf 2.13; the comment came from there.
# Done by Guy Harris <[email protected]> on 2000-01-14.
#
AC_DEFUN([AC_WIRESHARK_GETHOSTBY_LIB_CHECK],
[
# [email protected] says -lnsl (and -lsocket) are needed for his 386/AT,
# to get the SysV transport functions.
# [email protected] says the Pyramid MIS-ES running DC/OSx (SVR4)
# needs -lnsl.
# The nsl library prevents programs from opening the X display
# on Irix 5.2, according to [email protected].
AC_CHECK_FUNC(gethostbyname, ,
AC_CHECK_LIB(nsl, gethostbyname, NSL_LIBS="-lnsl"))
AC_SUBST(NSL_LIBS)
])
#
# AC_WIRESHARK_SOCKET_LIB_CHECK
#
# Checks whether we need "-lsocket" to get "socket()", which is used
# by libpcap on some platforms - and, in effect, "gethostby*()" on
# most if not all platforms (so that it can use NIS or DNS or...
# to look up host names).
#
# Adapted from stuff in the AC_PATH_XTRA macro in "acspecific.m4" in
# GNU Autoconf 2.13; the comment came from there.
# Done by Guy Harris <[email protected]> on 2000-01-14.
#
# We use "connect" because that's what AC_PATH_XTRA did.
#
AC_DEFUN([AC_WIRESHARK_SOCKET_LIB_CHECK],
[
# [email protected] says without -lsocket,
# socket/setsockopt and other routines are undefined under SCO ODT
# 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary
# on later versions), says [email protected]: it contains
# gethostby* variants that don't use the nameserver (or something).
# -lsocket must be given before -lnsl if both are needed.
# We assume that if connect needs -lnsl, so does gethostbyname.
AC_CHECK_FUNC(connect, ,
AC_CHECK_LIB(socket, connect, SOCKET_LIBS="-lsocket",
AC_MSG_ERROR(Function 'socket' not found.), $NSL_LIBS))
AC_SUBST(SOCKET_LIBS)
])
#
# AC_WIRESHARK_BREAKLOOP_TRY_LINK
#
AC_DEFUN([AC_WIRESHARK_PCAP_BREAKLOOP_TRY_LINK],
[
AC_LINK_IFELSE(
[
AC_LANG_SOURCE(
[[
# include <pcap.h>
int main(void)
{
pcap_t *pct = NULL;
pcap_breakloop(pct);
return 0;
}
]])
],
[
ws_breakloop_compiled=yes
],
[
ws_breakloop_compiled=no
])
])
#
# AC_WIRESHARK_PCAP_CHECK
#
AC_DEFUN([AC_WIRESHARK_PCAP_CHECK],
[
if test -z "$pcap_dir"
then
# Pcap header checks
# XXX need to set a var AC_CHECK_HEADER(pcap.h,,)
#
# The user didn't specify a directory in which libpcap resides.
# First, look for a pcap-config script.
#
AC_PATH_PROG(PCAP_CONFIG, pcap-config)
if test -n "$PCAP_CONFIG" ; then
#
# Found it.
#
# Now check whether it's the libpcap 1.0 version, which
# put a space after "-L" - on some platforms, that doesn't
# work.
#
AC_MSG_CHECKING(for broken pcap-config)
case "`\"$PCAP_CONFIG\" --libs`" in
"-L "*)
#
# Space after -L. Pretend pcap-config doesn't exist.
#
AC_MSG_RESULT(yes)
PCAP_CONFIG=""
;;
*)
#
# No space after -L.
#
AC_MSG_RESULT(no)
;;
esac
fi
if test -n "$PCAP_CONFIG" ; then
#
# Found it, and it's usable; use it to get the include flags
# for libpcap.
#
CFLAGS="$CFLAGS `\"$PCAP_CONFIG\" --cflags`"
CPPFLAGS="$CPPFLAGS `\"$PCAP_CONFIG\" --cflags`"
else
#
# Didn't find it; we have to look for libpcap ourselves.
# We assume that the current library search path will work,
# but we may have to look for the header in a "pcap"
# subdirectory of "/usr/include" or "/usr/local/include",
# as some systems apparently put "pcap.h" in a "pcap"
# subdirectory, and we also check "$prefix/include" - and
# "$prefix/include/pcap", in case $prefix is set to
# "/usr/include" or "/usr/local/include".
#
# XXX - should we just add "$prefix/include" to the include
# search path and "$prefix/lib" to the library search path?
#
AC_MSG_CHECKING(for extraneous pcap header directories)
found_pcap_dir=""
pcap_dir_list="/usr/include/pcap $prefix/include/pcap $prefix/include"
if test "x$ac_cv_enable_usr_local" = "xyes" ; then
pcap_dir_list="$pcap_dir_list /usr/local/include/pcap"
fi
for pcap_dir in $pcap_dir_list
do
if test -d $pcap_dir ; then
if test x$pcap_dir != x/usr/include -a x$pcap_dir != x/usr/local/include ; then
CFLAGS="$CFLAGS -I$pcap_dir"
CPPFLAGS="$CPPFLAGS -I$pcap_dir"
fi
found_pcap_dir=" $found_pcap_dir -I$pcap_dir"
break
fi
done
if test "$found_pcap_dir" != "" ; then
AC_MSG_RESULT(found --$found_pcap_dir added to CFLAGS)
else
AC_MSG_RESULT(not found)
fi
fi
else
#
# The user specified a directory in which libpcap resides,
# so add the "include" subdirectory of that directory to
# the include file search path and the "lib" subdirectory
# of that directory to the library search path.
#
# XXX - if there's also a libpcap in a directory that's
# already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
# make us find the version in the specified directory,
# as the compiler and/or linker will search that other
# directory before it searches the specified directory.
#
CFLAGS="$CFLAGS -I$pcap_dir/include"
CPPFLAGS="$CPPFLAGS -I$pcap_dir/include"
AC_WIRESHARK_ADD_DASH_L(LDFLAGS, $pcap_dir/lib)
fi
# Pcap header check
AC_CHECK_HEADER(pcap.h,,
AC_MSG_ERROR([[Header file pcap.h not found; if you installed libpcap
from source, did you also do \"make install-incl\", and if you installed a
binary package of libpcap, is there also a developer's package of libpcap,
and did you also install that package?]]))
if test -n "$PCAP_CONFIG" ; then
#
# We have pcap-config; we assume that means we have libpcap
# installed and that pcap-config will tell us whatever
# libraries libpcap needs.
#
if test x$enable_static = xyes; then
PCAP_LIBS="`\"$PCAP_CONFIG\" --libs --static`"
else
PCAP_LIBS="`\"$PCAP_CONFIG\" --libs`"
fi
AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library])
else
#
# Check to see if we find "pcap_open_live" in "-lpcap".
# Also check for various additional libraries that libpcap might
# require.
#
AC_CHECK_LIB(pcap, pcap_open_live,
[
PCAP_LIBS=-lpcap
AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library])
], [
ac_wireshark_extras_found=no
ac_save_LIBS="$LIBS"
for extras in "-lcfg -lodm" "-lpfring"
do
AC_MSG_CHECKING([for pcap_open_live in -lpcap with $extras])
LIBS="-lpcap $extras"
#
# XXX - can't we use AC_CHECK_LIB here?
#
AC_TRY_LINK(
[
# include <pcap.h>
],
[
pcap_open_live(NULL, 0, 0, 0, NULL);
],
[
ac_wireshark_extras_found=yes
AC_MSG_RESULT([yes])
PCAP_LIBS="-lpcap $extras"
AC_DEFINE(HAVE_LIBPCAP, 1, [Define to use libpcap library])
],
[
AC_MSG_RESULT([no])
])
if test x$ac_wireshark_extras_found = xyes
then
break
fi
done
if test x$ac_wireshark_extras_found = xno
then
AC_MSG_ERROR([Can't link with library libpcap.])
fi
LIBS=$ac_save_LIBS
], $SOCKET_LIBS $NSL_LIBS)
fi
AC_SUBST(PCAP_LIBS)
#
# Check whether various variables and functions are defined by
# libpcap.
#
ac_save_LIBS="$LIBS"
AC_MSG_CHECKING(whether pcap_version is defined by libpcap)
LIBS="$PCAP_LIBS $SOCKET_LIBS $NSL_LIBS $LIBS"
AC_TRY_LINK(
[
# include <stdio.h>
extern char *pcap_version;
],
[
printf ("%s\n", pcap_version);
],
ac_cv_pcap_version_defined=yes,
ac_cv_pcap_version_defined=no,
[echo $ac_n "cross compiling; assumed OK... $ac_c"])
if test "$ac_cv_pcap_version_defined" = yes ; then
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_PCAP_VERSION, 1, [Define if libpcap version is known])
else
AC_MSG_RESULT(no)
fi
AC_CHECK_FUNCS(pcap_open_dead pcap_freecode)
#
# pcap_breakloop may be present in the library but not declared
# in the pcap.h header file. If it's not declared in the header
# file, attempts to use it will get warnings, and, if we're
# building with warnings treated as errors, that warning will
# cause compilation to fail.
#
# We are therefore first testing whether the function is present
# and then, if we're compiling with warnings as errors, testing
# whether it is usable. It is usable if it compiles without
# a -Wimplicit warning (the "compile with warnings as errors"
# option requires GCC). If it is not usable, we fail and tell
# the user that the pcap.h header needs to be updated.
#
# Ceteris paribus, this should only happen with Mac OS X 10.3[.x] which
# can have an up-to-date pcap library without the corresponding pcap
# header.
#
# However, it might also happen on some others OSes with some erroneous
# system manipulations where multiple versions of libcap might co-exist
# e.g. hand made symbolic link from libpcap.so -> libpcap.so.0.8 but
# having the pcap header version 0.7.
#
AC_MSG_CHECKING([whether pcap_breakloop is present])
ac_CFLAGS_saved="$CFLAGS"
AC_WIRESHARK_PCAP_BREAKLOOP_TRY_LINK
if test "x$ws_breakloop_compiled" = "xyes"; then
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_PCAP_BREAKLOOP, 1, [Define if pcap_breakloop is known])
if test "x$with_warnings_as_errors" = "xyes"; then
AC_MSG_CHECKING([whether pcap_breakloop is usable])
CFLAGS="$CFLAGS -Werror -Wimplicit"
AC_WIRESHARK_PCAP_BREAKLOOP_TRY_LINK
if test "x$ws_breakloop_compiled" = "xyes"; then
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
AC_MSG_ERROR(
[Your pcap library is more recent than your pcap header.
As you are building with compiler warnings treated as errors, Wireshark
won't be able to use functions not declared in that header.
If you wish to build with compiler warnings treated as errors, You should
install a newer version of the header file.])
fi
CFLAGS="$ac_CFLAGS_saved"
fi
else
AC_MSG_RESULT(no)
fi
#
# Later versions of Mac OS X 10.3[.x] ship a pcap.h that
# doesn't define pcap_if_t but ship an 0.8[.x] libpcap,
# so the library has "pcap_findalldevs()", but pcap.h
# doesn't define "pcap_if_t" so you can't actually *use*
# "pcap_findalldevs()".
#
# That even appears to be true of systems shipped with
# 10.3.4, so it doesn't appear only to be a case of
# Software Update not updating header files.
#
# (You can work around this by installing the 0.8 header
# files.)
#
AC_CACHE_CHECK([whether pcap_findalldevs is present and usable],
[ac_cv_func_pcap_findalldevs],
[
AC_LINK_IFELSE(
[
AC_LANG_SOURCE(
[[
#include <pcap.h>
main()
{
pcap_if_t *devpointer;
char errbuf[1];
pcap_findalldevs(&devpointer, errbuf);
}
]])
],
[
ac_cv_func_pcap_findalldevs=yes
],
[
ac_cv_func_pcap_findalldevs=no
])
])
#
# Don't check for other new routines that showed up after
# "pcap_findalldevs()" if we don't have a usable
# "pcap_findalldevs()", so we don't end up using them if the
# "pcap.h" is crufty and old and doesn't declare them.
#
if test $ac_cv_func_pcap_findalldevs = "yes" ; then
AC_DEFINE(HAVE_PCAP_FINDALLDEVS, 1,
[Define to 1 if you have the `pcap_findalldevs' function and a pcap.h that declares pcap_if_t.])
AC_CHECK_FUNCS(pcap_datalink_val_to_name pcap_datalink_name_to_val)
AC_CHECK_FUNCS(pcap_datalink_val_to_description)
AC_CHECK_FUNCS(pcap_list_datalinks pcap_set_datalink pcap_lib_version)
AC_CHECK_FUNCS(pcap_get_selectable_fd pcap_free_datalinks)
AC_CHECK_FUNCS(pcap_create bpf_image)
fi
LIBS="$ac_save_LIBS"
])
AC_DEFUN([AC_WIRESHARK_PCAP_REMOTE_CHECK],
[
ac_save_LIBS="$LIBS"
LIBS="$PCAP_LIBS $SOCKET_LIBS $NSL_LIBS $LIBS"
AC_DEFINE(HAVE_REMOTE, 1, [Define to 1 to enable remote
capturing feature in WinPcap library])
AC_CHECK_FUNCS(pcap_open pcap_findalldevs_ex pcap_createsrcstr)
if test $ac_cv_func_pcap_open = "yes" -a \
$ac_cv_func_pcap_findalldevs_ex = "yes" -a \
$ac_cv_func_pcap_createsrcstr = "yes" ; then
AC_DEFINE(HAVE_PCAP_REMOTE, 1,
[Define to 1 if you have WinPcap remote capturing support and prefer to use these new API features.])
fi
AC_CHECK_FUNCS(pcap_setsampling)
LIBS="$ac_save_LIBS"
])
#
# AC_WIRESHARK_ZLIB_CHECK
#
AC_DEFUN([AC_WIRESHARK_ZLIB_CHECK],
[
if test "x$zlib_dir" != "x"
then
#
# The user specified a directory in which zlib resides,
# so add the "include" subdirectory of that directory to
# the include file search path and the "lib" subdirectory
# of that directory to the library search path.
#
# XXX - if there's also a zlib in a directory that's
# already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
# make us find the version in the specified directory,
# as the compiler and/or linker will search that other
# directory before it searches the specified directory.
#
wireshark_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -I$zlib_dir/include"
wireshark_save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -I$zlib_dir/include"
wireshark_save_LIBS="$LIBS"
AC_WIRESHARK_ADD_DASH_L(LIBS, $zlib_dir/lib)
fi
#
# Make sure we have "zlib.h". If we don't, it means we probably
# don't have zlib, so don't use it.
#
AC_CHECK_HEADER(zlib.h,,
[
if test "x$zlib_dir" != "x"
then
#
# The user used "--with-zlib=" to specify a directory
# containing zlib, but we didn't find the header file
# there; that either means they didn't specify the
# right directory or are confused about whether zlib
# is, in fact, installed. Report the error and give up.
#
AC_MSG_ERROR([zlib header not found in directory specified in --with-zlib])
else
if test "x$want_zlib" = "xyes"
then
#
# The user tried to force us to use the library, but we
# couldn't find the header file; report an error.
#
AC_MSG_ERROR(Header file zlib.h not found.)
else
#
# We couldn't find the header file; don't use the
# library, as it's probably not present.
#
want_zlib=no
fi
fi
])
if test "x$want_zlib" != "xno"
then
#
# Well, we at least have the zlib header file.
#
# Check for "gzgets()" in zlib, because we need it, but
# some older versions of zlib don't have it. It appears
# from the zlib ChangeLog that any released version of zlib
# with "gzgets()" should have the other routines we
# depend on, such as "gzseek()", "gztell()", and "zError()".
#
# Another reason why we require "gzgets()" is that
# some versions of zlib that didn't have it, such
# as 1.0.8, had a bug in "gzseek()" that meant that it
# doesn't work correctly on uncompressed files; this
# means we cannot use version 1.0.8. (Unfortunately,
# that's the version that comes with recent X11 source,
# and many people who install XFree86 on their Slackware
# boxes don't realize that they should configure it to
# use the native zlib rather than building and installing
# the crappy old version that comes with XFree86.)
#
# I.e., we can't just avoid using "gzgets()", as
# versions of zlib without "gzgets()" are likely to have
# a broken "gzseek()".
#
AC_CHECK_LIB(z, gzgets,
[
if test "x$zlib_dir" != "x"
then
#
# Put the "-I" and "-L" flags for zlib at
# the beginning of CFLAGS, CPPFLAGS, and
# LIBS.
#
LIBS=""
AC_WIRESHARK_ADD_DASH_L(LIBS, $zlib_dir/lib)
LIBS="$LIBS -lz $wireshark_save_LIBS"
else
LIBS="-lz $LIBS"
fi
AC_DEFINE(HAVE_LIBZ, 1, [Define to use libz library])
],[
if test "x$zlib_dir" != "x"
then
#
# Restore the versions of CFLAGS, CPPFLAGS,
# and LIBS before we added the "-with-zlib="
# directory, as we didn't actually find
# zlib there, or didn't find a zlib that
# contains gzgets there.
#
CFLAGS="$wireshark_save_CFLAGS"
CPPFLAGS="$wireshark_save_CPPFLAGS"
LIBS="$wireshark_save_LIBS"
fi
want_zlib=no
])
fi
if test "x$want_zlib" != "xno"
then
#
# Well, we at least have the zlib header file and a zlib
# with "gzgets()".
#
# Now check for "gzgets()" in zlib when linking with the
# linker flags for GTK+ applications; people often grab
# XFree86 source and build and install it on their systems,
# and they appear sometimes to misconfigure XFree86 so that,
# even on systems with zlib, it assumes there is no zlib,
# so the XFree86 build process builds and installs its
# own zlib in the X11 library directory.
#
# The XFree86 zlib is an older version that lacks
# "gzgets()", and that's the zlib with which Wireshark
# gets linked, so the build of Wireshark fails.
#
ac_save_CFLAGS="$CFLAGS"
ac_save_LIBS="$LIBS"
CFLAGS="$CFLAGS $GTK_CFLAGS"
LIBS="$GTK_LIBS -lz $LIBS"
AC_MSG_CHECKING([for gzgets missing when linking with X11])
AC_TRY_LINK_FUNC(gzgets, AC_MSG_RESULT(no),
[
AC_MSG_RESULT(yes)
AC_MSG_ERROR(old zlib found when linking with X11 - get rid of old zlib.)
])
CFLAGS="$ac_save_CFLAGS"
LIBS="$ac_save_LIBS"
fi
])
#
# AC_WIRESHARK_LIBPCRE_CHECK
#
AC_DEFUN([AC_WIRESHARK_LIBPCRE_CHECK],
[
if test "x$pcre_dir" != "x"
then
#
# The user specified a directory in which libpcre resides,
# so add the "include" subdirectory of that directory to
# the include file search path and the "lib" subdirectory
# of that directory to the library search path.
#
# XXX - if there's also a libpcre in a directory that's
# already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
# make us find the version in the specified directory,
# as the compiler and/or linker will search that other
# directory before it searches the specified directory.
#
wireshark_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -I$pcre_dir/include"
wireshark_save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -I$pcre_dir/include"
wireshark_save_LIBS="$LIBS"
LIBS="$LIBS -lpcre"
wireshark_save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -L$pcre_dir/lib"
fi
#
# Make sure we have "pcre.h". If we don't, it means we probably
# don't have libpcre, so don't use it.
#
AC_CHECK_HEADER(pcre.h,,
[
if test "x$pcre_dir" != "x"
then
#
# The user used "--with-pcre=" to specify a directory
# containing libpcre, but we didn't find the header file
# there; that either means they didn't specify the
# right directory or are confused about whether libpcre
# is, in fact, installed. Report the error and give up.
#
AC_MSG_ERROR([libpcre header not found in directory specified in --with-pcre])
else
if test "x$want_pcre" = "xyes"
then
#
# The user tried to force us to use the library, but we
# couldn't find the header file; report an error.
#
AC_MSG_ERROR(Header file pcre.h not found.)
else
#
# We couldn't find the header file; don't use the
# library, as it's probably not present.
#
want_pcre=no
fi
fi
])
if test "x$want_pcre" != "xno"
then
#
# Well, we at least have the pcre header file.
#
# We're only using standard functions from libpcre,
# so we don't need to perform extra checks.
#
AC_CHECK_LIB(pcre, pcre_compile,
[
if test "x$pcre_dir" != "x"
then
#
# Put the "-I" and "-L" flags for pcre at
# the beginning of CFLAGS, CPPFLAGS,
# LDFLAGS, and LIBS.
#
PCRE_LIBS="-L$pcre_dir/lib -lpcre $wireshark_save_LIBS"
else
PCRE_LIBS="-lpcre"
fi
AC_DEFINE(HAVE_LIBPCRE, 1, [Define to use libpcre library])
],[
if test "x$pcre_dir" != "x"
then
#
# Restore the versions of CFLAGS, CPPFLAGS,
# LDFLAGS, and LIBS before we added the
# "--with-pcre=" directory, as we didn't
# actually find pcre there.
#
CFLAGS="$wireshark_save_CFLAGS"
CPPFLAGS="$wireshark_save_CPPFLAGS"
LDFLAGS="$wireshark_save_LDFLAGS"
LIBS="$wireshark_save_LIBS"
PCRE_LIBS=""
fi
want_pcre=no
])
AC_SUBST(PCRE_LIBS)
fi
])
#
# AC_WIRESHARK_LIBLUA_CHECK
#
AC_DEFUN([AC_WIRESHARK_LIBLUA_CHECK],[
if test "x$lua_dir" != "x"
then
#
# The user specified a directory in which liblua resides,
# so add the "include" subdirectory of that directory to
# the include file search path and the "lib" subdirectory
# of that directory to the library search path.
#
# XXX - if there's also a liblua in a directory that's
# already in CFLAGS, CPPFLAGS, or LDFLAGS, this won't
# make us find the version in the specified directory,
# as the compiler and/or linker will search that other
# directory before it searches the specified directory.
#
wireshark_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -I$lua_dir/include"
wireshark_save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -I$lua_dir/include"
wireshark_save_LIBS="$LIBS"
LIBS="$LIBS -L$lua_dir/lib -llua -lm"
wireshark_save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -L$lua_dir/lib"
else
#
# The user specified no directory in which liblua resides,
# so just add "-llua -lliblua" to the used libs.
#
wireshark_save_CFLAGS="$CFLAGS"
wireshark_save_CPPFLAGS="$CPPFLAGS"
wireshark_save_LDFLAGS="$LDFLAGS"
wireshark_save_LIBS="$LIBS"
LIBS="$LIBS -llua -lm"
fi
#
# Make sure we have "lua.h", "lualib.h" and "lauxlib.h". If we don't, it means we probably
# don't have liblua, so don't use it.
#
AC_CHECK_HEADERS(lua.h lualib.h lauxlib.h,,
[
AC_CHECK_HEADERS(lua5.1/lua.h lua5.1/lualib.h lua5.1/lauxlib.h,
[
if test "x$lua_dir" != "x"
then
LUA_INCLUDES="-I$lua_dir/include/lua5.1"
else
#
# The user didn't specify a directory in which liblua resides;
# we must look for the headers in a "lua5.1" subdirectory of
# "/usr/include", "/usr/local/include", or "$prefix/include"
# as some systems apparently put the headers in a "lua5.1"
# subdirectory.
AC_MSG_CHECKING(for extraneous lua header directories)
found_lua_dir=""
lua_dir_list="/usr/include/lua5.1 $prefix/include/lua5.1"
if test "x$ac_cv_enable_usr_local" = "xyes"
then
lua_dir_list="$lua_dir_list /usr/local/include/lua5.1"
fi
for lua_dir_ent in $lua_dir_list
do
if test -d $lua_dir_ent
then
LUA_INCLUDES="-I$lua_dir_ent"
found_lua_dir="$lua_dir_ent"
break
fi
done
if test "x$found_lua_dir" != "x"
then
AC_MSG_RESULT(found -- $found_lua_dir)
else
AC_MSG_RESULT(not found)
#
# Restore the versions of CFLAGS, CPPFLAGS,
# LDFLAGS, and LIBS before we added the
# "--with-lua=" directory, as we didn't
# actually find lua there.
#
CFLAGS="$wireshark_save_CFLAGS"
CPPFLAGS="$wireshark_save_CPPFLAGS"
LDFLAGS="$wireshark_save_LDFLAGS"
LIBS="$wireshark_save_LIBS"
LUA_LIBS=""
if test "x$want_lua" = "xyes"
then
# we found lua5.1/lua.h, but we don't know which include dir contains it
AC_MSG_ERROR(Header file lua.h was found as lua5.1/lua.h but we can't locate the include directory. Please set the DIR for the --with-lua configure parameter.)
else
#
# We couldn't find the header file; don't use the
# library, as it's probably not present.
#
want_lua=no
fi
fi