lvm2/configure.in

##
## Copyright (C) 2000-2004 Sistina Software, Inc. All rights reserved.
## Copyright (C) 2004 Red Hat, Inc. All rights reserved.
##
## This file is part of the LVM2.
##
## This copyrighted material is made available to anyone wishing to use,
## modify, copy, or redistribute it subject to the terms and conditions
## of the GNU General Public License v.2.
##
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software Foundation,
## Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
################################################################################

AC_PREREQ(2.53)
################################################################################
dnl -- Process this file with autoconf to produce a configure script.
AC_INIT(lib/device/dev-cache.h)

################################################################################
AC_CONFIG_HEADERS(lib/misc/configure.h)

################################################################################
dnl -- Setup the directory where autoconf has auxilary files
AC_CONFIG_AUX_DIR(autoconf) 

################################################################################
dnl -- Get system type
AC_CANONICAL_SYSTEM

case "$host_os" in
	linux*)
		CFLAGS="$CFLAGS"
		COPTIMISE_FLAG="-O2"
		CLDFLAGS="$CLDFLAGS -Wl,--version-script,.export.sym"
		CLDWHOLEARCHIVE="-Wl,-whole-archive"
		CLDNOWHOLEARCHIVE="-Wl,-no-whole-archive"
		LDDEPS="$LDDEPS .export.sym"
		LDFLAGS="$LDFLAGS -Wl,--export-dynamic"
		LIB_SUFFIX="so"
		DEVMAPPER=yes
		ODIRECT=yes
		SELINUX=yes
		CLUSTER=internal
		FSADM=no ;;
	darwin*)
		CFLAGS="$CFLAGS -no-cpp-precomp -fno-common"
		COPTIMISE_FLAG="-O2"
		CLDFLAGS="$CLDFLAGS"
		CLDWHOLEARCHIVE="-all_load"
		CLDNOWHOLEARCHIVE=
		LDDEPS="$LDDEPS"
		LDFLAGS="$LDFLAGS"
		LIB_SUFFIX="dylib"
		DEVMAPPER=yes
		ODIRECT=no
		SELINUX=no
		CLUSTER=none
		FSADM=no ;;
esac

################################################################################
dnl -- Checks for programs.
AC_PROG_AWK
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_RANLIB
AC_PATH_PROG(CFLOW_CMD, cflow)
AC_PATH_PROG(CSCOPE_CMD, cscope)

################################################################################
dnl -- Checks for header files.
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_HEADER_TIME

AC_CHECK_HEADERS(fcntl.h limits.h locale.h stddef.h syslog.h sys/file.h sys/ioctl.h sys/param.h sys/time.h,,AC_MSG_ERROR(bailing out))
AC_CHECK_HEADERS(assert.h ctype.h libgen.h signal.h stdio.h sys/mman.h sys/resource.h sys/stat.h sys/types.h sys/utsname.h sys/wait.h time.h,,AC_MSG_ERROR(bailing out))

case "$host_os" in
	linux*)
		AC_CHECK_HEADERS(asm/byteorder.h linux/fs.h malloc.h,,AC_MSG_ERROR(bailing out)) ;;
	darwin*)
		AC_CHECK_HEADERS(machine/endian.h sys/disk.h,,AC_MSG_ERROR(bailing out)) ;;
esac

################################################################################
dnl -- Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_MODE_T
AC_STRUCT_ST_RDEV
AC_STRUCT_TM

################################################################################
dnl -- Check for functions
AC_CHECK_FUNCS(gethostname getpagesize memset munmap setlocale strcasecmp strchr strdup strncasecmp strerror strrchr strstr strtol strtoul,,AC_MSG_ERROR(bailing out))
AC_FUNC_ALLOCA
AC_FUNC_CLOSEDIR_VOID
AC_FUNC_FORK
AC_FUNC_LSTAT
AC_FUNC_MALLOC
AC_FUNC_MEMCMP
AC_FUNC_MMAP
AC_FUNC_STAT
AC_FUNC_STRTOD

################################################################################
dnl -- Prefix is /usr by default, the exec_prefix default is setup later
AC_PREFIX_DEFAULT(/usr)

################################################################################
dnl -- Parallel make jobs?
AC_ARG_ENABLE(jobs, [  --enable-jobs=NUM       Number of jobs to run simultaneously], JOBS=-j$enableval, JOBS=-j2)

################################################################################
dnl -- Setup the ownership of the files
AC_MSG_CHECKING(file owner)
OWNER="root"

AC_ARG_WITH(user,
  [  --with-user=USER        Set the owner of installed files ],
  [ OWNER="$withval" ])
AC_MSG_RESULT($OWNER)

if test x$OWNER != x; then
	OWNER="-o $OWNER"
fi

################################################################################
dnl -- Setup the group ownership of the files
AC_MSG_CHECKING(group owner)
GROUP="root"
AC_ARG_WITH(group,
  [  --with-group=GROUP      Set the group owner of installed files ],
  [ GROUP="$withval" ])
AC_MSG_RESULT($GROUP)

if test x$GROUP != x; then
	GROUP="-g $GROUP"
fi

################################################################################
dnl -- LVM1 tool fallback option
AC_MSG_CHECKING(whether to enable lvm1 fallback)
AC_ARG_ENABLE(lvm1_fallback, [  --enable-lvm1_fallback  Use this to fall back and use LVM1 binaries if
                          device-mapper is missing from the kernel],  LVM1_FALLBACK=$enableval, LVM1_FALLBACK=no)
AC_MSG_RESULT($LVM1_FALLBACK)

if test x$LVM1_FALLBACK = xyes; then
	AC_DEFINE([LVM1_FALLBACK], 1, [Define to 1 if 'lvm' should fall back to using LVM1 binaries if device-mapper is missing from the kernel])
fi

################################################################################
dnl -- format1 inclusion type
AC_MSG_CHECKING(whether to include support for lvm1 metadata)
AC_ARG_WITH(lvm1,
  [  --with-lvm1=TYPE        LVM1 metadata support: internal/shared/none
                          [TYPE=internal] ],
  [ LVM1="$withval" ],
  [ LVM1="internal" ])
AC_MSG_RESULT($LVM1)

if [[ "x$LVM1" != xnone -a "x$LVM1" != xinternal -a "x$LVM1" != xshared ]];
 then  AC_MSG_ERROR(
--with-lvm1 parameter invalid
)
fi;

if test x$LVM1 = xinternal; then
	AC_DEFINE([LVM1_INTERNAL], 1, [Define to 1 to include built-in support for LVM1 metadata.])
fi

################################################################################
dnl -- format_pool inclusion type
AC_MSG_CHECKING(whether to include support for GFS pool metadata)
AC_ARG_WITH(pool,
  [  --with-pool=TYPE        GFS pool read-only support: internal/shared/none
                          [TYPE=internal] ],
  [ POOL="$withval" ],
  [ POOL="internal" ])
AC_MSG_RESULT($POOL)

if [[ "x$POOL" != xnone -a "x$POOL" != xinternal -a "x$POOL" != xshared ]];
 then  AC_MSG_ERROR(
--with-pool parameter invalid
)
fi;

if test x$POOL = xinternal; then
	AC_DEFINE([POOL_INTERNAL], 1, [Define to 1 to include built-in support for GFS pool metadata.])
fi

################################################################################
dnl -- cluster_locking inclusion type
AC_MSG_CHECKING(whether to include support for cluster locking)
AC_ARG_WITH(cluster,
  [  --with-cluster=TYPE     Cluster LVM locking support: internal/shared/none
                          [TYPE=internal] ],
  [ CLUSTER="$withval" ])
AC_MSG_RESULT($CLUSTER)

if [[ "x$CLUSTER" != xnone -a "x$CLUSTER" != xinternal -a "x$CLUSTER" != xshared ]];
 then  AC_MSG_ERROR(
--with-cluster parameter invalid
)
fi;

if test x$CLUSTER = xinternal; then
	AC_DEFINE([CLUSTER_LOCKING_INTERNAL], 1, [Define to 1 to include built-in support for clustered LVM locking.])
fi

################################################################################
dnl -- snapshots inclusion type
AC_MSG_CHECKING(whether to include snapshots)
AC_ARG_WITH(snapshots,
  [  --with-snapshots=TYPE   Snapshot support: internal/shared/none
                          [TYPE=internal] ],
  [ SNAPSHOTS="$withval" ],
  [ SNAPSHOTS="internal" ])
AC_MSG_RESULT($SNAPSHOTS)

if [[ "x$SNAPSHOTS" != xnone -a "x$SNAPSHOTS" != xinternal -a "x$SNAPSHOTS" != xshared ]];
 then  AC_MSG_ERROR(
--with-snapshots parameter invalid
)
fi;

if test x$SNAPSHOTS = xinternal; then
	AC_DEFINE([SNAPSHOT_INTERNAL], 1, [Define to 1 to include built-in support for snapshots.])
fi

################################################################################
dnl -- mirrors inclusion type
AC_MSG_CHECKING(whether to include mirrors)
AC_ARG_WITH(mirrors,
  [  --with-mirrors=TYPE     Mirror support: internal/shared/none
                          [TYPE=internal] ],
  [ MIRRORS="$withval" ],
  [ MIRRORS="internal" ])
AC_MSG_RESULT($MIRRORS)

if [[ "x$MIRRORS" != xnone -a "x$MIRRORS" != xinternal -a "x$MIRRORS" != xshared ]];
 then  AC_MSG_ERROR(
--with-mirrors parameter invalid
)
fi;

if test x$MIRRORS = xinternal; then
	AC_DEFINE([MIRRORED_INTERNAL], 1, [Define to 1 to include built-in support for mirrors.])
fi

################################################################################
dnl -- Enables staticly-linked tools
AC_MSG_CHECKING(whether to use static linking)
AC_ARG_ENABLE(static_link, [  --enable-static_link    Use this to link the tools to their libraries
                          statically.  Default is dynamic linking],  STATIC_LINK=$enableval, STATIC_LINK=no)
AC_MSG_RESULT($STATIC_LINK)

################################################################################
dnl -- Enable readline
AC_MSG_CHECKING(whether to enable readline)
AC_ARG_ENABLE(readline, [  --enable-readline       Enable readline support],
READLINE=$enableval, READLINE=no)
AC_MSG_RESULT($READLINE)

if test x$READLINE = xyes; then
	AC_DEFINE([READLINE_SUPPORT], 1, [Define to 1 to include the LVM readline shell.])
fi

################################################################################
dnl -- Disable selinux
AC_MSG_CHECKING(whether to enable selinux support)
AC_ARG_ENABLE(selinux, [  --disable-selinux       Disable selinux support],
SELINUX=$enableval)
AC_MSG_RESULT($SELINUX)

################################################################################
dnl -- Build cluster LVM daemon
AC_MSG_CHECKING(whether to build cluster LVM daemon)
AC_ARG_WITH(clvmd,
  [  --with-clvmd=TYPE       Build cluster LVM Daemon: cman/gulm/none/all
                          [TYPE=none] ],
  [ CLVMD="$withval" ],
  [ CLVMD="none" ])
if test x$CLVMD = xyes; then
	CLVMD=all
fi
AC_MSG_RESULT($CLVMD)

dnl -- If clvmd enabled without cluster locking, automagically include it
if  test x$CLVMD != xnone && test x$CLUSTER = xnone; then
	CLUSTER=internal
fi

################################################################################
dnl -- Enable debugging
AC_MSG_CHECKING(whether to enable debugging)
AC_ARG_ENABLE(debug,    [  --enable-debug          Enable debugging],
DEBUG=$enableval, DEBUG=no)
AC_MSG_RESULT($DEBUG)

dnl -- Normally turn off optimisation for debug builds
if test x$DEBUG = xyes; then
	COPTIMISE_FLAG=
else
	CSCOPE_CMD=
fi

################################################################################
dnl -- Override optimisation
AC_MSG_CHECKING(for C optimisation flag)
AC_ARG_WITH(optimisation,
  [  --with-optimisation=OPT C optimisation flag [OPT=-O2] ],
  [ COPTIMISE_FLAG="$withval" ])
AC_MSG_RESULT($COPTIMISE_FLAG)

################################################################################
dnl -- Disable devmapper
AC_MSG_CHECKING(whether to use device-mapper)
AC_ARG_ENABLE(devmapper, [  --disable-devmapper     Disable device-mapper interaction],
DEVMAPPER=$enableval)
AC_MSG_RESULT($DEVMAPPER)

if test x$DEVMAPPER = xyes; then
	AC_DEFINE([DEVMAPPER_SUPPORT], 1, [Define to 1 to enable device-mapper interaction.])
fi

################################################################################
dnl -- Disable O_DIRECT
AC_MSG_CHECKING(whether to enable O_DIRECT)
AC_ARG_ENABLE(o_direct, [  --disable-o_direct      Disable O_DIRECT],
ODIRECT=$enableval)
AC_MSG_RESULT($ODIRECT)

if test x$ODIRECT = xyes; then
	AC_DEFINE([O_DIRECT_SUPPORT], 1, [Define to 1 to enable O_DIRECT support.])
fi

################################################################################
dnl -- Enable cmdlib
AC_MSG_CHECKING(whether to compile liblvm2cmd.so)
AC_ARG_ENABLE(cmdlib, [  --enable-cmdlib         Build shared command library],
CMDLIB=$enableval, CMDLIB=no)
AC_MSG_RESULT($CMDLIB)

################################################################################
dnl -- Enable fsadm
AC_MSG_CHECKING(whether to build fsadm)
AC_ARG_ENABLE(fsadm, [  --enable-fsadm          Enable fsadm],
FSADM=$enableval)
AC_MSG_RESULT($FSADM)

################################################################################
dnl -- enable dmeventd handling
AC_MSG_CHECKING(whether to use dmeventd)
AC_ARG_ENABLE(dmeventd, [  --enable-dmeventd       Enable the device-mapper event daemon],
DMEVENTD=$enableval)
AC_MSG_RESULT($DMEVENTD)

dnl -- dmeventd currently requires internal mirror support
if test x$DMEVENTD = xyes && test x$MIRRORS != xinternal; then
AC_MSG_ERROR(
--enable-dmeventd currently requires --with-mirrors=internal
)
fi

if test x$DMEVENTD = xyes; then
	AC_DEFINE([DMEVENTD], 1, [Define to 1 to enable the device-mapper event daemon.])
fi
################################################################################
dnl -- Mess with default exec_prefix
if [[ "x$exec_prefix" = xNONE -a "x$prefix" = xNONE ]];
 then  exec_prefix="";
fi;

################################################################################
dnl -- Checks for library functions.
AC_PROG_GCC_TRADITIONAL
AC_TYPE_SIGNAL
AC_FUNC_VPRINTF
AC_CHECK_FUNCS(mkdir rmdir uname,,AC_MSG_ERROR(bailing out))

################################################################################
dnl -- Check for termcap (Shamelessly copied from parted 1.4.17)
if test x$READLINE = xyes; then
	AC_SEARCH_LIBS(tgetent, ncurses curses termcap termlib, ,
		AC_MSG_ERROR(
termcap could not be found which is required for the
--enable-readline option (which is enabled by default).  Either disable readline
support with --disable-readline or download and install termcap from:
	ftp.gnu.org/gnu/termcap
Note: if you are using precompiled packages you will also need the development
  package as well (which may be called termcap-devel or something similar).
Note: (n)curses also seems to work as a substitute for termcap.  This was
  not found either - but you could try installing that as well.
)
	)
fi

################################################################################
dnl -- Check for dlopen
AC_CHECK_LIB(dl, dlopen, HAVE_LIBDL=yes, HAVE_LIBDL=no)

if [[ "x$HAVE_LIBDL" = xyes ]]; then
	AC_DEFINE([HAVE_LIBDL], 1, [Define to 1 if dynamic libraries are available.])
	LIBS="-ldl $LIBS"
else
	HAVE_LIBDL=no
fi

################################################################################
dnl -- Check for shared/static conflicts
if [[ \( "x$LVM1" = xshared -o "x$POOL" = xshared -o "x$CLUSTER" = xshared \
      -o "x$SNAPSHOTS" = xshared -o "x$MIRRORS" = xshared \
      \) -a "x$STATIC_LINK" = xyes ]];
 then  AC_MSG_ERROR(
Features cannot be 'shared' when building statically
)
fi

################################################################################
dnl -- Check for selinux
if test x$SELINUX = xyes; then
	AC_MSG_CHECKING(for sepol_check_context function)
	AC_CHECK_LIB(sepol, sepol_check_context, HAVE_SEPOL=yes, HAVE_SEPOL=no)
	AC_MSG_RESULT($HAVE_SEPOL)

	if test x$HAVE_SEPOL = xyes; then
		LIBS="-lsepol $LIBS"
	fi

	AC_MSG_CHECKING(for is_selinux_enabled function)
	AC_CHECK_LIB(selinux, is_selinux_enabled, HAVE_SELINUX=yes, HAVE_SELINUX=no)
	AC_MSG_RESULT($HAVE_SELINUX)

	if test x$HAVE_SELINUX = xyes; then
		AC_DEFINE([HAVE_SELINUX], 1, [Define to 1 to include support for selinux.])
		LIBS="-lselinux $LIBS"
	else
		AC_MSG_WARN(Disabling selinux)
	fi
fi

################################################################################
dnl -- Check for getopt
AC_CHECK_HEADERS(getopt.h, AC_DEFINE([HAVE_GETOPTLONG], 1, [Define to 1 to if getopt_long is available.]))

################################################################################
dnl -- Check for readline (Shamelessly copied from parted 1.4.17)
if test x$READLINE = xyes; then
	AC_CHECK_LIB(readline, readline, ,
		AC_MSG_ERROR(
GNU Readline could not be found which is required for the
--enable-readline option (which is enabled by default).  Either disable readline
support with --disable-readline or download and install readline from:
	ftp.gnu.org/gnu/readline
Note: if you are using precompiled packages you will also need the development
package as well (which may be called readline-devel or something similar).
)
	)
	AC_CHECK_FUNC(rl_completion_matches, AC_DEFINE([HAVE_RL_COMPLETION_MATCHES], 1, [Define to 1 if rl_completion_matches() is available.]))
fi

################################################################################
dnl -- Internationalisation stuff
AC_MSG_CHECKING(whether to enable internationalisation)
AC_ARG_ENABLE(nls, [  --enable-nls            Enable Native Language Support],
		INTL=$enableval, INTL=no)
AC_MSG_RESULT($INTL)

if test x$INTL = xyes; then
	INTL_PACKAGE="lvm2"
	AC_PATH_PROG(MSGFMT, msgfmt)
	if [[ "x$MSGFMT" == x ]];
		then  AC_MSG_ERROR(
		msgfmt not found in path $PATH
		)
	fi;

	AC_ARG_WITH(localedir,
  		    [  --with-localedir=DIR    Translation files in DIR [PREFIX/share/locale]],
  		    [ LOCALEDIR="$withval" ],
  		    [ LOCALEDIR='${prefix}/share/locale' ])
fi

################################################################################
AC_ARG_WITH(confdir,
	    [  --with-confdir=DIR      Configuration files in DIR [/etc]],
  	    [ CONFDIR="$withval" ],
 	    [ CONFDIR='/etc' ])

AC_ARG_WITH(staticdir,
	    [  --with-staticdir=DIR    Static binary in DIR [EXEC_PREFIX/sbin]],
  	    [ STATICDIR="$withval" ],
 	    [ STATICDIR='${exec_prefix}/sbin' ])

################################################################################
dnl -- Ensure additional headers required
if test x$READLINE = xyes; then
	AC_CHECK_HEADERS(readline/readline.h readline/history.h,,AC_MSG_ERROR(bailing out))
fi

if test x$CLVMD != xnone; then
	AC_CHECK_HEADERS(mntent.h netdb.h netinet/in.h pthread.h search.h sys/mount.h sys/socket.h sys/uio.h sys/un.h utmpx.h,,AC_MSG_ERROR(bailing out))
	AC_CHECK_FUNCS(dup2 getmntent memmove select socket,,AC_MSG_ERROR(bailing out))
	AC_FUNC_GETMNTENT
#	AC_FUNC_REALLOC
	AC_FUNC_SELECT_ARGTYPES
fi

if test x$FSADM = xyes; then
	AC_CHECK_HEADERS(fstab.h sys/mount.h sys/vfs.h,,AC_MSG_ERROR(bailing out))
	AC_CHECK_FUNCS(memmove,,AC_MSG_ERROR(bailing out))
fi

if test x$CLUSTER != xnone; then
	AC_CHECK_HEADERS(sys/socket.h sys/un.h,,AC_MSG_ERROR(bailing out))
	AC_CHECK_FUNCS(socket,,AC_MSG_ERROR(bailing out))
fi

if test x$HAVE_LIBDL = xyes; then
	AC_CHECK_HEADERS(dlfcn.h,,AC_MSG_ERROR(bailing out))
fi

if test x$INTL = xyes; then
	AC_CHECK_HEADERS(libintl.h,,AC_MSG_ERROR(bailing out))
fi

AC_CHECK_HEADERS(libdevmapper.h,,AC_MSG_ERROR(bailing out))

if test x$HAVE_SELINUX = xyes; then
	AC_CHECK_HEADERS(selinux/selinux.h,,AC_MSG_ERROR(bailing out))
fi

################################################################################
AC_PATH_PROG(MODPROBE_CMD, modprobe)

if test x$MODPROBE_CMD != x; then
	AC_DEFINE_UNQUOTED([MODPROBE_CMD], ["$MODPROBE_CMD"], [The path to 'modprobe', if available.])
fi

################################################################################
if test "-f VERSION"; then
  LVM_VERSION="\"`cat VERSION`\""
else
  LVM_VERSION="Unknown"
fi

################################################################################
AC_SUBST(JOBS)
AC_SUBST(STATIC_LINK)
AC_SUBST(LVM1)
AC_SUBST(POOL)
AC_SUBST(SNAPSHOTS)
AC_SUBST(MIRRORS)
AC_SUBST(OWNER)
AC_SUBST(GROUP)
AC_SUBST(CFLAGS)
AC_SUBST(COPTIMISE_FLAG)
AC_SUBST(CLDFLAGS)
AC_SUBST(CLDWHOLEARCHIVE)
AC_SUBST(CLDNOWHOLEARCHIVE)
AC_SUBST(LDDEPS)
AC_SUBST(LDFLAGS)
AC_SUBST(LIB_SUFFIX)
AC_SUBST(LIBS)
AC_SUBST(LVM_VERSION)
AC_SUBST(LVM1_FALLBACK)
AC_SUBST(DEBUG)
AC_SUBST(DEVMAPPER)
AC_SUBST(HAVE_LIBDL)
AC_SUBST(HAVE_SELINUX)
AC_SUBST(CMDLIB)
AC_SUBST(MSGFMT)
AC_SUBST(LOCALEDIR)
AC_SUBST(CONFDIR)
AC_SUBST(STATICDIR)
AC_SUBST(INTL_PACKAGE)
AC_SUBST(INTL)
AC_SUBST(CLVMD)
AC_SUBST(CLUSTER)
AC_SUBST(FSADM)
AC_SUBST(DMEVENTD)
AC_SUBST(CFLOW_CMD)
AC_SUBST(CSCOPE_CMD)

################################################################################
dnl -- First and last lines should not contain files to generate in order to 
dnl -- keep utility scripts running properly
AC_OUTPUT( 								\
Makefile								\
make.tmpl								\
daemons/Makefile							\
daemons/clvmd/Makefile							\
dmeventd/Makefile							\
dmeventd/mirror/Makefile						\
doc/Makefile								\
include/Makefile						 	\
lib/Makefile							 	\
lib/format1/Makefile						 	\
lib/format_pool/Makefile						\
lib/locking/Makefile							\
lib/mirror/Makefile							\
lib/snapshot/Makefile							\
man/Makefile							 	\
po/Makefile								\
tools/Makefile							 	\
tools/version.h								\
tools/fsadm/Makefile							\
test/mm/Makefile							\
test/device/Makefile							\
test/format1/Makefile							\
test/regex/Makefile                                                     \
test/filters/Makefile                                                   \
)

if test x$ODIRECT != xyes; then
  AC_MSG_WARN(Warning: O_DIRECT disabled: low-memory pvmove may lock up)
fi

if test x$FSADM == xyes; then
  AC_MSG_WARN(fsadm support is untested)
fi

if test x$DMEVENTD == xyes; then
  AC_MSG_WARN(dmeventd support is untested)
fi