configure.in 24.1 KB
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dnl Copyright (C) 1998, 1999, 2000  Internet Software Consortium.
dnl 
dnl Permission to use, copy, modify, and distribute this software for any
dnl purpose with or without fee is hereby granted, provided that the above
dnl copyright notice and this permission notice appear in all copies.
dnl 
dnl THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
dnl ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
dnl OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
dnl CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
dnl DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
dnl PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
dnl ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
dnl SOFTWARE.
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AC_REVISION($Revision: 1.135 $)
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AC_PREREQ(2.13)
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AC_INIT(lib/dns/name.c)
AC_CONFIG_HEADER(config.h)

AC_CANONICAL_HOST

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AC_PROG_MAKE_SET
AC_PROG_RANLIB
AC_PROG_INSTALL

AC_SUBST(STD_CINCLUDES)
AC_SUBST(STD_CDEFINES)
AC_SUBST(STD_CWARNINGS)

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AC_PATH_PROG(AR, ar)
ARFLAGS="cruv"
AC_SUBST(AR)
AC_SUBST(ARFLAGS)

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case "$AR" in
	"")
		AC_MSG_ERROR([
ar program not found.  Please fix your PATH to include the directory in
which ar resides, or set AR in the environment with the full path to ar.
])

		;;
esac

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AC_PATH_PROGS(ETAGS, etags emacs-etags)
AC_SUBST(ETAGS)

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#
# Special processing of paths depending on whether --prefix,
# --sysconfdir or --localstatedir arguments were given.  What's
# desired is some compatability with the way previous versions
# of BIND built; they defaulted to /usr/local for most parts of
# the installation, but named.boot/named.conf was in /etc
# and named.pid was in /var/run.
#
# So ... if none of --prefix, --sysconfdir or --localstatedir are
# specified, set things up that way.  If --prefix is given, use
# it for sysconfdir and localstatedir the way configure normally
# would.  To change the prefix for everything but leave named.conf
# in /etc or named.pid in /var/run, then do this the usual configure way:
# ./configure --prefix=/somewhere --sysconfdir=/etc
# ./configure --prefix=/somewhere --localstatedir=/var
#
# To put named.conf and named.pid in /usr/local with everything else,
# set the prefix explicitly to /usr/local even though that's the default:
# ./configure --prefix=/usr/local
#
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case "$prefix" in
        NONE)
                case "$sysconfdir" in
                        '${prefix}/etc')
                                sysconfdir=/etc
                                ;;
                esac
                case "$localstatedir" in
                        '${prefix}/var')
                                localstatedir=/var
                                ;;
                esac
                ;;
esac

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#
# Make sure INSTALL uses an absolute path, else it will be wrong in all
# Makefiles, since they use make/rules.in and INSTALL will be adjusted by
# configure based on the location of the file where it is substituted.
# Since in BIND9 INSTALL is only substituted into make/rules.in, an immediate
# subdirectory of install-sh, This relative path will be wrong for all
# directories more than one level down from install-sh.
#
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case "$INSTALL" in
	/*)
                ;;
        *)
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                #
                # Not all systems have dirname.
                #
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                changequote({, })
                ac_dir="`echo $INSTALL | sed 's%/[^/]*$%%'`"
                changequote([, ])

                ac_prog="`echo $INSTALL | sed 's%.*/%%'`"
                test "$ac_dir" = "$ac_prog" && ac_dir=.
                test -d "$ac_dir" && ac_dir="`(cd \"$ac_dir\" && pwd)`"
                INSTALL="$ac_dir/$ac_prog"
                ;;
esac

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#
# On these hosts, we really want to use cc, not gcc, even if it is
# found.  The gcc that these systems have will not correctly handle
# pthreads.
#
# However, if the user sets $CC to be something, let that override
# our change.
#
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if test "X$CC" = "X" ; then
	case "$host" in
		*-dec-osf*)
			CC="cc"
			;;
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		*-solaris*)
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                        # Use Sun's cc if it is available, but watch
                        # out for /usr/ucb/cc; it will never be the right
                        # compiler to use.
                        #
                        # If setting CC here fails, the AC_PROG_CC done
                        # below might still find gcc.
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			IFS="${IFS=	}"; ac_save_ifs="$IFS"; IFS=":"
			for ac_dir in $PATH; do
				test -z "$ac_dir" && ac_dir=.
				case "$ac_dir" in
				/usr/ucb)
					# exclude
					;;
				*)
					if test -f "$ac_dir/cc"; then
						CC="$ac_dir/cc"
						break
					fi
					;;
				esac
			done
			IFS="$ac_save_ifs"
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			;;
		*-hp-hpux*)
			CC="cc"
			;;
		mips-sgi-irix*)
			CC="cc"
			;;
	esac
fi

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#
# If the user didn't specify where openssl is, and we didn't find or it
# is imcompatible with our code, use our internal one.
# XXXMLG Implement this check!
#
AC_MSG_CHECKING(for compatible OpenSSL library)
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DST_PRIVATEOPENSSL='-DDST_USE_PRIVATE_OPENSSL'
dst_privateopenssl='openssl'
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DST_OPENSSL_INC='-I${srcdir}/../openssl/include'
DST_OPENSSL_LIB=''
DST_OPENSSL_OBJS='${OPENSSLOBJS}'
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AC_MSG_RESULT(using private library)
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AC_SUBST(DST_PRIVATEOPENSSL)
AC_SUBST(dst_privateopenssl)
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AC_SUBST(DST_OPENSSL_INC)
AC_SUBST(DST_OPENSSL_LIB)
AC_SUBST(DST_OPENSSL_OBJS)

#
# This would include the system openssl path (and linker options to use
# it as needed) if it is found.
#

DNS_OPENSSL_LIBS=""
AC_SUBST(DNS_OPENSSL_LIBS)

#
# testing with alternate openssl libraries...  XXXMLG
#
# DNS_OPENSSL_LIBS="-L/usr/pkg/lib -lssl -lcrypto"
# DST_PRIVATEOPENSSL=''
# dst_privateopenssl=''
# DST_OPENSSL_INC='-I/usr/pkg/include'
# DST_OPENSSL_LIB=''
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#
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#
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# NetBSD has multiple pthreads implementations.  The recommended
# one to use is "unproven-pthreads".  The older "mit-pthreads" 
# may also work on some NetBSD versions.  The PTL2 thread
# library does not currently work with bind9, but can be
# chosen with the --with-ptl2 option for those who wish to
# experiment with it.
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#
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case "$host" in
  *-netbsd*)
	CC="gcc"
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	AC_MSG_CHECKING(which NetBSD thread library to use)
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	AC_ARG_WITH(ptl2,
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[  --with-ptl2		on NetBSD, use the ptl2 thread library (experimental)],
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	    use_ptl2="$withval", use_ptl2="no")

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        : ${LOCALBASE:=/usr/pkg}

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	if test "X$use_ptl2" = "Xyes"
	then
		AC_MSG_RESULT(PTL2)
		AC_MSG_WARN(
[linking with PTL2 is highly experimental and not expected to work])
		CC=ptlgcc
	else
		AC_MSG_RESULT(mit-pthreads/unproven-pthreads)
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		if test ! -d $LOCALBASE/pthreads
		then
			AC_MSG_ERROR([no thread library found.
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Please install the devel/unproven-pthreads package and rerun configure.
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])
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		fi

		pkg="$LOCALBASE/pthreads"
		lib1="-L$pkg/lib -Wl,-R$pkg/lib"
		lib2="-lpthread -lm -lgcc -lpthread"
		LIBS="$lib1 $lib2 $LIBS"
		CPPFLAGS="$CPPFLAGS -I$pkg/include"
		STD_CINCLUDES="$STD_CINCLUDES -I$pkg/include"
	fi
	;;
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esac

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AC_PROG_CC
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AC_PROG_YACC
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AC_HEADER_STDC

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#
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# See the IPv6 section for additional special handling of netinet6/in6.h.
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#
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AC_CHECK_HEADERS(fcntl.h sys/time.h unistd.h sys/sockio.h netinet6/in6.h)
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AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_HEADER_TIME

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AC_CHECK_LIB(pthread, pthread_create,,
             AC_CHECK_LIB(pthread, __pthread_create)
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             AC_CHECK_LIB(pthread, __pthread_create_system)
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)
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#
# We'd like to use sigwait() too
#
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AC_CHECK_LIB(c, sigwait,
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	     AC_DEFINE(HAVE_SIGWAIT),
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             AC_CHECK_LIB(pthread, sigwait,
			  AC_DEFINE(HAVE_SIGWAIT),
			  AC_CHECK_LIB(pthread, _Psigwait,
				       AC_DEFINE(HAVE_SIGWAIT),))
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)

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#
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# Additional OS-specific issues related to pthreads.
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#
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case "$host" in
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        #
        # One more place to look for sigwait.
        #
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	*-freebsd*)
		AC_CHECK_LIB(c_r, sigwait, AC_DEFINE(HAVE_SIGWAIT),)
		;;
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        #
        # BSDI 3.1 through 4.0.1 needs pthread_init() to be called before
        # certain pthreads calls.  This is deprecated in BSD/OS 4.1.
        #
	*-bsdi3.1*|*-bsdi4.0*)
		AC_DEFINE(NEED_PTHREAD_INIT)
		;;
        #
        # LinuxThreads requires some changes to the way we deal with signals.
        #
	*-linux*)
		AC_DEFINE(HAVE_LINUXTHREADS)
		;;
        #
        # Ensure the right sigwait() semantics on Solaris.
        #
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	*-solaris*)
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		AC_DEFINE(_POSIX_PTHREAD_SEMANTICS)
		;;
esac

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#
# NLS
#
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AC_CHECK_FUNC(catgets, AC_DEFINE(HAVE_CATGETS),)

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#
# -lxnet buys us one big porting headache...  standards, gotta love 'em.
#
# AC_CHECK_LIB(xnet, socket, ,
#    AC_CHECK_LIB(socket, socket)
#    AC_CHECK_LIB(nsl, inet_ntoa)
# )
#
# Use this for now, instead:
#
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case "$host" in
	mips-sgi-irix*)
		;;
	*)
		AC_CHECK_LIB(socket, socket)
		AC_CHECK_LIB(nsl, inet_ntoa)
		;;
esac
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MKDEPCC="$CC"
MKDEPCFLAGS="-M"
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if test "X$GCC" = "Xyes"; then
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	STD_CWARNINGS="$STD_CWARNINGS -W -Wall -Wmissing-prototypes"
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	case "$host" in
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		*-freebsd*)
			CC="$CC -pthread"
			STD_CDEFINES="$STD_CDEFINES -D_THREAD_SAFE"
			;;
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		*-openbsd*)
			CC="$CC -pthread"
			;;
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		*-solaris*)
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			LIBS="$LIBS -lthread"
			;;
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		*-ibm-aix*)
			STD_CDEFINES="$STD_CDEFINES -D_THREAD_SAFE"
			;;
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	esac
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else
	case "$host" in
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		*-dec-osf*)
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			CC="$CC -std -pthread"
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			MKDEPCC="$CC"
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			;;
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		*-solaris*)
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			CC="$CC -mt"
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			MKDEPCC="$CC"
			MKDEPCFLAGS="-xM"
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			;;
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		*-hp-hpux*)
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			CC="$CC -Ae -z +w1"
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			MKDEPPROG='cc -Ae -E -Wp,-M >/dev/null 2>>$TMP'
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			;;
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                *-sgi-irix*)
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			STD_CWARNINGS="-fullwarn -woff 1209"
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                        ;;
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		*-ibm-aix*)
			STD_CDEFINES="$STD_CDEFINES -D_THREAD_SAFE"
			;;
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	esac
fi
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AC_SUBST(MKDEPCC)
AC_SUBST(MKDEPCFLAGS)
AC_SUBST(MKDEPPROG)
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#
# Networking specifics.
#
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case "$host" in
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	*-dec-osf*)
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		# Turn on 4.4BSD style sa_len support.
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		AC_DEFINE(_SOCKADDR_LEN)
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		;;
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esac
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#
# Look for a 4.4BSD-style sa_len member in struct sockaddr.
#
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AC_MSG_CHECKING(for sa_len in struct sockaddr)
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AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>],
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[struct sockaddr sa; sa.sa_len = 0; return (0);],
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	[AC_MSG_RESULT(yes)
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	ISC_PLATFORM_HAVESALEN="#define ISC_PLATFORM_HAVESALEN 1"
	LWRES_PLATFORM_HAVESALEN="#define LWRES_PLATFORM_HAVESALEN 1"],
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	[AC_MSG_RESULT(no)
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	ISC_PLATFORM_HAVESALEN="#undef ISC_PLATFORM_HAVESALEN"
	LWRES_PLATFORM_HAVESALEN="#undef LWRES_PLATFORM_HAVESALEN"])
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AC_SUBST(ISC_PLATFORM_HAVESALEN)
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AC_SUBST(LWRES_PLATFORM_HAVESALEN)
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#
# Look for a 4.4BSD or 4.3BSD struct msghdr
#
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AC_MSG_CHECKING(for struct msghdr flavor)
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>],
[struct msghdr msg; msg.msg_flags = 0; return (0);],
	[AC_MSG_RESULT(4.4BSD)
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	ISC_PLATFORM_MSGHDRFLAVOR="#define ISC_NET_BSD44MSGHDR 1"],
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	[AC_MSG_RESULT(4.3BSD)
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	ISC_PLATFORM_MSGHDRFLAVOR="#define ISC_NET_BSD43MSGHDR 1"])
AC_SUBST(ISC_PLATFORM_MSGHDRFLAVOR)
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#
# Look for in_port_t.
#
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AC_MSG_CHECKING(for type in_port_t)
AC_TRY_COMPILE([
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#include <sys/types.h>
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#include <netinet/in.h>],
[in_port_t port = 25; return (0);],
	[AC_MSG_RESULT(yes)
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	ISC_PLATFORM_NEEDPORTT="#undef ISC_PLATFORM_NEEDPORTT"],
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        [AC_MSG_RESULT(no)
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	ISC_PLATFORM_NEEDPORTT="#define ISC_PLATFORM_NEEDPORTT 1"])
AC_SUBST(ISC_PLATFORM_NEEDPORTT)
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#
# Check for addrinfo
#
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AC_MSG_CHECKING(for struct addrinfo)
AC_TRY_COMPILE([
#include <netdb.h>],
[struct addrinfo a; return (0);],
	[AC_MSG_RESULT(yes)
	ISC_LWRES_NEEDADDRINFO="#undef ISC_LWRES_NEEDADDRINFO"],
	[AC_MSG_RESULT(no)
	ISC_LWRES_NEEDADDRINFO="#define ISC_LWRES_NEEDADDRINFO 1"])
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AC_SUBST(ISC_LWRES_NEEDADDRINFO)

AC_MSG_CHECKING(for int sethostent)
AC_TRY_COMPILE([
#include <netdb.h>],
[int i = sethostent(0); return(0);],
	[AC_MSG_RESULT(yes)
	ISC_LWRES_SETHOSTENTINT="#define ISC_LWRES_SETHOSTENTINT 1"],
	[AC_MSG_RESULT(no)
	ISC_LWRES_SETHOSTENTINT="#undef ISC_LWRES_SETHOSTENTINT"])
AC_SUBST(ISC_LWRES_SETHOSTENTINT)

AC_MSG_CHECKING(for int endhostent)
AC_TRY_COMPILE([
#include <netdb.h>],
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[int i = endhostent(); return(0);],
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	[AC_MSG_RESULT(yes)
	ISC_LWRES_ENDHOSTENTINT="#define ISC_LWRES_ENDHOSTENTINT 1"],
	[AC_MSG_RESULT(no)
	ISC_LWRES_ENDHOSTENTINT="#undef ISC_LWRES_ENDHOSTENTINT"])
AC_SUBST(ISC_LWRES_ENDHOSTENTINT)

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AC_MSG_CHECKING(for getnetbyaddr(in_addr_t, ...))
AC_TRY_COMPILE([
#include <netdb.h>
struct netent *getnetbyaddr(in_addr_t, int);],
[],
	[AC_MSG_RESULT(yes)
	ISC_LWRES_GETNETBYADDRINADDR="#define ISC_LWRES_GETNETBYADDRINADDR 1"],
	[AC_MSG_RESULT(no)
	ISC_LWRES_GETNETBYADDRINADDR="#undef ISC_LWRES_GETNETBYADDRINADDR"])
AC_SUBST(ISC_LWRES_GETNETBYADDRINADDR)

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AC_MSG_CHECKING(for int setnetent)
AC_TRY_COMPILE([
#include <netdb.h>],
[int i = setnetent(0); return(0);],
	[AC_MSG_RESULT(yes)
	ISC_LWRES_SETNETENTINT="#define ISC_LWRES_SETNETENTINT 1"],
	[AC_MSG_RESULT(no)
	ISC_LWRES_SETNETENTINT="#undef ISC_LWRES_SETNETENTINT"])
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AC_SUBST(ISC_LWRES_SETNETENTINT)

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AC_MSG_CHECKING(for int endnetent)
AC_TRY_COMPILE([
#include <netdb.h>],
[int i = endnetent(); return(0);],
	[AC_MSG_RESULT(yes)
	ISC_LWRES_ENDNETENTINT="#define ISC_LWRES_ENDNETENTINT 1"],
	[AC_MSG_RESULT(no)
	ISC_LWRES_ENDNETENTINT="#undef ISC_LWRES_ENDNETENTINT"])
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AC_SUBST(ISC_LWRES_ENDNETENTINT)
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AC_MSG_CHECKING(for gethostbyadd(const void *, size_t, ...))
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AC_TRY_COMPILE([
#include <netdb.h>
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struct hostent *gethostbyaddr(const void *, size_t, int);],
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[return(0);],
	[AC_MSG_RESULT(yes)
	ISC_LWRES_GETHOSTBYADDRVOID="#define ISC_LWRES_GETHOSTBYADDRVOID 1"],
	[AC_MSG_RESULT(no)
	ISC_LWRES_GETHOSTBYADDRVOID="#undef ISC_LWRES_GETHOSTBYADDRVOID"])
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AC_SUBST(ISC_LWRES_GETHOSTBYADDRVOID)

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AC_MSG_CHECKING(for h_errno in netdb.h)
AC_TRY_COMPILE([
#include <netdb.h>],
[h_errno = 1; return(0);],
	[AC_MSG_RESULT(yes)
	ISC_LWRES_NEEDHERRNO="#undef ISC_LWRES_NEEDHERRNO"],
	[AC_MSG_RESULT(no)
	ISC_LWRES_NEEDHERRNO="#define ISC_LWRES_NEEDHERRNO 1"])
AC_SUBST(ISC_LWRES_NEEDHERRNO)

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AC_CHECK_FUNC(getipnodebyname,
        [ISC_LWRES_GETIPNODEPROTO="#undef ISC_LWRES_GETIPNODEPROTO"],
        [ISC_LWRES_GETIPNODEPROTO="#define ISC_LWRES_GETIPNODEPROTO 1"])
AC_CHECK_FUNC(getnameinfo,
        [ISC_LWRES_GETNAMEINFOPROTO="#undef ISC_LWRES_GETNAMEINFOPROTO"],
        [ISC_LWRES_GETNAMEINFOPROTO="#define ISC_LWRES_GETNAMEINFOPROTO 1"])
AC_CHECK_FUNC(getaddrinfo,
        [ISC_LWRES_GETADDRINFOPROTO="#undef ISC_LWRES_GETADDRINFOPROTO"],
        [ISC_LWRES_GETADDRINFOPROTO="#define ISC_LWRES_GETADDRINFOPROTO 1"])
AC_SUBST(ISC_LWRES_GETIPNODEPROTO)
AC_SUBST(ISC_LWRES_GETADDRINFOPROTO)
AC_SUBST(ISC_LWRES_GETNAMEINFOPROTO)

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#
# Look for a sysctl call to get the list of network interfaces.
#
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AC_MSG_CHECKING(for interface list sysctl)
AC_EGREP_CPP(found_rt_iflist, [
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/socket.h>
#ifdef NET_RT_IFLIST
found_rt_iflist
#endif
],
	[AC_MSG_RESULT(yes)
	 AC_DEFINE(HAVE_IFLIST_SYSCTL)],
	[AC_MSG_RESULT(no)])

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#
# GNU libtool support
#
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AC_ARG_WITH(libtool,
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	    [  --with-libtool	use GNU libtool (following indented options supported)],
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	    use_libtool="$withval", use_libtool="no")

case $use_libtool in
	yes)
		AM_PROG_LIBTOOL
		O=lo
		A=la
		;;
	*)
		O=o
		A=a
		LIBTOOL=
		AC_SUBST(LIBTOOL)
		;;
esac
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# File name extension for static archive files, for those few places
# where they are treated differently from dynamic ones.
SA=a

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AC_SUBST(O)
AC_SUBST(A)
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AC_SUBST(SA)
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#
# IPv6
#
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AC_ARG_ENABLE(ipv6,
	[  --enable-ipv6		use IPv6 [default=autodetect]])

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#
# We do the IPv6 compilation checking after libtool so that we can put
# the right suffix on the files.
#
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case "$enable_ipv6" in
	yes|''|autodetect)
		AC_MSG_CHECKING(for IPv6 structures)
		AC_TRY_COMPILE([
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#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>],
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		[struct sockaddr_in6 sin6; return (0);],
			[AC_MSG_RESULT(yes)
			 found_ipv6=yes],
			[AC_MSG_RESULT(no)
			 found_ipv6=no])
		;;
	no)
		found_ipv6=no
		;;
esac

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#
# See whether IPv6 support is provided via a Kame add-on.
# This is done before other IPv6 linking tests to LIBS is properly set.
#
AC_MSG_CHECKING(for Kame IPv6 support)
AC_ARG_WITH(kame,
	[  --with-kame[=PATH]	use Kame IPv6 [default path /usr/local/v6]],
	use_kame="$withval", use_kame="no")

case "$use_kame" in
	no)
		;;
	yes)
		kame_path=/usr/local/v6
		;;
	*)
		kame_path="$use_kame"
		;;
esac

case "$use_kame" in
	no)
		AC_MSG_RESULT(no)
		;;
	*)
		if test -f $kame_path/lib/libinet6.a; then
			AC_MSG_RESULT($kame_path/lib/libinet6.a)
			LIBS="-L$kame_path/lib -linet6 $LIBS"
		else
			AC_MSG_ERROR([$kame_path/lib/libinet6.a not found.

Please choose the proper path with the following command:

    configure --with-kame=PATH
])
		fi
		;;
esac

#
# Whether netinet6/in6.h is needed has to be defined in isc/platform.h.
# Including it on Kame-using platforms is very bad, though, because
# Kame uses #error against direct inclusion.   So include it on only
# the platform that is otherwise broken without it -- BSD/OS 4.0 through 4.1.
# This is done before the in6_pktinfo check because that's what
# netinet6/in6.h is needed for.
#
isc_netinet6_hack=""
changequote({, })
case "$ac_cv_header_netinet6_in6_h+$host" in
yes+*-bsdi4.[01]*)
	ISC_PLATFORM_NEEDNETINET6IN6H="#define ISC_PLATFORM_NEEDNETINET6IN6H 1"
	LWRES_PLATFORM_NEEDNETINET6IN6H="#define LWRES_PLATFORM_NEEDNETINET6IN6H 1"
	isc_netinet6_hack="#include <netinet6/in6.h>"
	;;
*)
	ISC_PLATFORM_NEEDNETINET6IN6H="#undef ISC_PLATFORM_NEEDNETINET6IN6H"
	LWRES_PLATFORM_NEEDNETINET6IN6H="#undef LWRES_PLATFORM_NEEDNETINET6IN6H"
	;;
esac
changequote([, ])

#
# Now delve deeper into the suitability of the IPv6 support.
#
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case "$found_ipv6" in
	yes)
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		ISC_PLATFORM_HAVEIPV6="#define ISC_PLATFORM_HAVEIPV6 1"
		LWRES_PLATFORM_HAVEIPV6="#define LWRES_PLATFORM_HAVEIPV6 1"
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		AC_MSG_CHECKING(for in6addr_any)
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		AC_TRY_LINK([
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#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>],
		[struct in6_addr in6; in6 = in6addr_any; return (0);],
			[AC_MSG_RESULT(yes)
			 ISC_PLATFORM_NEEDIN6ADDRANY="#undef ISC_PLATFORM_NEEDIN6ADDRANY"],
			[AC_MSG_RESULT(no)
			 ISC_PLATFORM_NEEDIN6ADDRANY="#define ISC_PLATFORM_NEEDIN6ADDRANY 1"])
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		AC_MSG_CHECKING(for in6_pktinfo)
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		AC_TRY_COMPILE([
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#include <sys/types.h>
#include <sys/socket.h>
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#include <netinet/in.h>
$isc_netinet6_hack
],
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		[struct in6_pktinfo xyzzy; return (0);],
			[AC_MSG_RESULT(yes)
			 ISC_PLATFORM_HAVEIN6PKTINFO="#define ISC_PLATFORM_HAVEIN6PKTINFO 1"],
			[AC_MSG_RESULT(no -- disabling runtime ipv6 support)
			 ISC_PLATFORM_HAVEIN6PKTINFO="#undef ISC_PLATFORM_HAVEIN6PKTINFO"])
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		;;
	no)
		ISC_PLATFORM_HAVEIPV6="#undef ISC_PLATFORM_HAVEIPV6"
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		LWRES_PLATFORM_HAVEIPV6="#undef LWRES_PLATFORM_HAVEIPV6"
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		ISC_PLATFORM_NEEDIN6ADDRANY="#undef ISC_PLATFORM_NEEDIN6ADDRANY"
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		ISC_PLATFORM_HAVEIN6PKTINFO="#undef ISC_PLATFORM_HAVEIN6PKTINFO"
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		ISC_IPV6_H="ipv6.h"
		ISC_IPV6_O="ipv6.$O"
		ISC_ISCIPV6_O="unix/ipv6.$O"
		ISC_IPV6_C="ipv6.c"
		;;
esac

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AC_SUBST(ISC_PLATFORM_HAVEIPV6)
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AC_SUBST(LWRES_PLATFORM_HAVEIPV6)
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AC_SUBST(ISC_PLATFORM_NEEDNETINET6IN6H)
AC_SUBST(LWRES_PLATFORM_NEEDNETINET6IN6H)
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AC_SUBST(ISC_PLATFORM_NEEDIN6ADDRANY)
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AC_SUBST(ISC_PLATFORM_HAVEIN6PKTINFO)
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AC_SUBST(ISC_IPV6_H)
AC_SUBST(ISC_IPV6_O)
AC_SUBST(ISC_ISCIPV6_O)
AC_SUBST(ISC_IPV6_C)

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#
# Check for network functions that are often missing.  We do this
# after the libtool checking, so we can put the right suffix on
# the files.
#
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AC_MSG_CHECKING([for inet_ntop])
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AC_TRY_LINK([
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>],
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        [inet_ntop(0, 0, 0, 0); return (0);],
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        [AC_MSG_RESULT(yes)
        ISC_PLATFORM_NEEDNTOP="#undef ISC_PLATFORM_NEEDNTOP"],

        [AC_MSG_RESULT(no)
        ISC_EXTRA_OBJS="$ISC_EXTRA_OBJS inet_ntop.$O"
        ISC_EXTRA_SRCS="$ISC_EXTRA_SRCS inet_ntop.c"
        ISC_PLATFORM_NEEDNTOP="#define ISC_PLATFORM_NEEDNTOP 1"])
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AC_TRY_LINK([
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>],
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        [AC_MSG_RESULT(yes)
        ISC_PLATFORM_NEEDPTON="#undef ISC_PLATFORM_NEEDPTON"],

        [AC_MSG_RESULT(no)
        ISC_EXTRA_OBJS="$ISC_EXTRA_OBJS inet_pton.$O"
        ISC_EXTRA_SRCS="$ISC_EXTRA_SRCS inet_pton.c"
        ISC_PLATFORM_NEEDPTON="#define ISC_PLATFORM_NEEDPTON 1"])
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AC_TRY_LINK([
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>],
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        [struct in_addr in; inet_aton(0, &in); return (0);],
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        [AC_MSG_RESULT(yes)
        ISC_PLATFORM_NEEDATON="#undef ISC_PLATFORM_NEEDATON"],

        [AC_MSG_RESULT(no)
        ISC_EXTRA_OBJS="$ISC_EXTRA_OBJS inet_aton.$O"
        ISC_EXTRA_SRCS="$ISC_EXTRA_SRCS inet_aton.c"
        ISC_PLATFORM_NEEDATON="#define ISC_PLATFORM_NEEDATON 1"])

AC_SUBST(ISC_PLATFORM_NEEDNTOP)
AC_SUBST(ISC_PLATFORM_NEEDPTON)
AC_SUBST(ISC_PLATFORM_NEEDATON)

# Check for some other useful functions that are not ever-present.
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AC_CHECK_FUNC(strsep,
	[ISC_PLATFORM_NEEDSTRSEP="#undef ISC_PLATFORM_NEEDSTRSEP"],
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	[ISC_PLATFORM_NEEDSTRSEP="#define ISC_PLATFORM_NEEDSTRSEP 1"])
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AC_CHECK_FUNC(vsnprintf,
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	[ISC_PLATFORM_NEEDVSNPRINTF="#undef ISC_PLATFORM_NEEDVSNPRINTF"],
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	[ISC_EXTRA_OBJS="$ISC_EXTRA_OBJS print.$O"
	 ISC_EXTRA_SRCS="$ISC_EXTRA_SRCS print.c"
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	 ISC_PLATFORM_NEEDVSNPRINTF="#define ISC_PLATFORM_NEEDVSNPRINTF 1"])
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AC_SUBST(ISC_PLATFORM_NEEDSTRSEP)
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AC_SUBST(ISC_PLATFORM_NEEDVSNPRINTF)
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AC_SUBST(ISC_EXTRA_OBJS)
AC_SUBST(ISC_EXTRA_SRCS)
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AC_MSG_CHECKING(for sizeof(long long int) == sizeof(long int))
AC_TRY_RUN([main() { exit(!(sizeof(long long int) == sizeof(long int))); }],
	[AC_MSG_RESULT(yes)
	ISC_PLATFORM_LONGLONGEQUALLONG="#define ISC_PLATFORM_LONGLONGEQUALLONG 1"],
	[AC_MSG_RESULT(no)
	ISC_PLATFORM_LONGLONGEQUALLONG="#undef ISC_PLATFORM_LONGLONGEQUALLONG"],
	[AC_MSG_RESULT(default yes)
	ISC_PLATFORM_LONGLONGEQUALLONG="#define ISC_PLATFORM_LONGLONGEQUALLONG 1"])
AC_SUBST(ISC_PLATFORM_LONGLONGEQUALLONG)
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#
# Security Stuff
#
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AC_CHECK_FUNC(chroot, AC_DEFINE(HAVE_CHROOT))
AC_CHECK_HEADERS(linux/capability.h)
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AC_CHECK_HEADERS(linux/prctl.h)
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#
# Random remaining OS-specific issues.
#
case "$host" in
	*-bsdi3.1*|*-bsdi4.0*)
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                #
                # Shut up a -Wmissing-prototypes warning from <stdio.h>.
                #
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		AC_DEFINE(SHUTUP_SPUTAUX)
		;;
esac

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#
# Substitutions
#
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AC_SUBST(BIND9_TOP_BUILDDIR)
BIND9_TOP_BUILDDIR=`pwd`

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AC_SUBST(BIND9_ISC_BUILDINCLUDE)
AC_SUBST(BIND9_DNS_BUILDINCLUDE)
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AC_SUBST(BIND9_OMAPI_BUILDINCLUDE)
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AC_SUBST(BIND9_LWRES_BUILDINCLUDE)
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if test "X$srcdir" != "X"; then
	BIND9_ISC_BUILDINCLUDE="-I${BIND9_TOP_BUILDDIR}/lib/isc/include"
	BIND9_DNS_BUILDINCLUDE="-I${BIND9_TOP_BUILDDIR}/lib/dns/include"
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	BIND9_OMAPI_BUILDINCLUDE="-I${BIND9_TOP_BUILDDIR}/lib/omapi/include"
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	BIND9_LWRES_BUILDINCLUDE="-I${BIND9_TOP_BUILDDIR}/lib/lwres/include"
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else
	BIND9_ISC_BUILDINCLUDE=""
	BIND9_DNS_BUILDINCLUDE=""
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	BIND9_OMAPI_BUILDINCLUDE=""
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	BIND9_LWRES_BUILDINCLUDE=""
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fi

AC_SUBST_FILE(BIND9_INCLUDES)
BIND9_INCLUDES=$BIND9_TOP_BUILDDIR/make/includes

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AC_SUBST_FILE(BIND9_MAKE_RULES)
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BIND9_MAKE_RULES=$BIND9_TOP_BUILDDIR/make/rules
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. $srcdir/version
BIND9_VERSION="VERSION=${MAJORVER}.${MINORVER}.${PATCHVER}${RELEASETYPE}${RELEASEVER}"
AC_SUBST(BIND9_VERSION)
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AC_SUBST_FILE(LIBISC_API)
LIBISC_API=$srcdir/lib/isc/api

AC_SUBST_FILE(LIBDNS_API)
LIBDNS_API=$srcdir/lib/dns/api

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AC_SUBST_FILE(LIBLWRES_API)
LIBLWRES_API=$srcdir/lib/lwres/api

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AC_SUBST_FILE(LIBOMAPI_API)
LIBOMAPI_API=$srcdir/lib/omapi/api

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AC_OUTPUT(
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	make/rules
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	make/includes
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	Makefile
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	make/Makefile
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	make/mkdep
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	lib/Makefile
	lib/isc/Makefile
	lib/isc/include/Makefile
	lib/isc/include/isc/Makefile
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	lib/isc/include/isc/platform.h
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	lib/isc/unix/Makefile
	lib/isc/unix/include/Makefile
	lib/isc/unix/include/isc/Makefile
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	lib/isc/nls/Makefile
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	lib/isc/pthreads/Makefile
	lib/isc/pthreads/include/Makefile
	lib/isc/pthreads/include/isc/Makefile
	lib/dns/Makefile
	lib/dns/include/Makefile
	lib/dns/include/dns/Makefile
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	lib/dns/sec/Makefile
	lib/dns/sec/openssl/Makefile
	lib/dns/sec/openssl/include/Makefile
	lib/dns/sec/openssl/include/openssl/Makefile
	lib/dns/sec/dnssafe/Makefile
	lib/dns/sec/dst/Makefile
	lib/dns/sec/dst/include/Makefile
	lib/dns/sec/dst/include/dst/Makefile
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	lib/dns/config/Makefile
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	lib/lwres/Makefile
	lib/lwres/include/Makefile
	lib/lwres/include/lwres/Makefile
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	lib/lwres/include/lwres/netdb.h
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	lib/lwres/include/lwres/platform.h
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	lib/omapi/Makefile
	lib/omapi/include/Makefile
	lib/omapi/include/omapi/Makefile
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	lib/tests/Makefile
	lib/tests/include/Makefile
	lib/tests/include/tests/Makefile
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	bin/Makefile
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	bin/named/Makefile
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	bin/named/unix/Makefile
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	bin/lwresd/Makefile
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	bin/rndc/Makefile
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	bin/dig/Makefile
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	bin/tests/Makefile
	bin/tests/names/Makefile
	bin/tests/master/Makefile
	bin/tests/rbt/Makefile
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	bin/tests/db/Makefile
	bin/tests/tasks/Makefile
	bin/tests/timers/Makefile
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	bin/tests/dst/Makefile
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	bin/tests/mem/Makefile
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	bin/tests/sockaddr/Makefile
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	bin/tests/headerdep_test.sh
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)