###############################################################################
## Copyright (C) 2000-2004 Sistina Software, Inc. All rights reserved.
## Copyright (C) 2004-2012 Red Hat, Inc. All rights reserved.
##
## 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(2.61)
################################################################################
dnl -- Process this file with autoconf to produce a configure script.
AC_INIT
AC_CONFIG_SRCDIR([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_TARGET([])

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

################################################################################
dnl -- Checks for programs.
AC_PROG_SED
AC_PROG_AWK
AC_PROG_CC

dnl probably no longer needed in 2008, but...
AC_PROG_GCC_TRADITIONAL
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_PROG_MKDIR_P
AC_PROG_RANLIB
AC_PATH_PROG(CFLOW_CMD, cflow)
AC_PATH_PROG(CSCOPE_CMD, cscope)

################################################################################
dnl -- Check for header files.
AC_HEADER_DIRENT
AC_HEADER_MAJOR
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_HEADER_TIME

AC_CHECK_HEADERS([locale.h stddef.h syslog.h sys/file.h sys/time.h assert.h \
  langinfo.h libgen.h signal.h sys/mman.h sys/resource.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

AC_CHECK_HEADERS([ctype.h dirent.h errno.h fcntl.h getopt.h inttypes.h limits.h \
  stdarg.h stdio.h stdlib.h string.h sys/ioctl.h sys/param.h sys/stat.h \
  sys/types.h unistd.h], , [AC_MSG_ERROR(bailing out)])
AC_CHECK_HEADERS(termios.h sys/statvfs.h)

################################################################################
dnl -- Check for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_CHECK_MEMBERS([struct stat.st_rdev])
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIGNAL
AC_TYPE_SIZE_T
AC_TYPE_MODE_T
AC_TYPE_INT8_T
AC_TYPE_INT16_T
AC_TYPE_INT32_T
AC_TYPE_INT64_T
AC_TYPE_SSIZE_T
AC_TYPE_UID_T
AC_TYPE_UINT8_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_CHECK_MEMBERS([struct stat.st_rdev])
AC_STRUCT_TM

################################################################################
dnl -- Check for functions
AC_CHECK_FUNCS([ftruncate gethostname getpagesize \
  gettimeofday memset mkdir mkfifo rmdir munmap nl_langinfo setenv setlocale \
  strcasecmp strchr strcspn strspn strdup strncasecmp strerror strrchr \
  strstr strtol strtoul uname], , [AC_MSG_ERROR(bailing out)])
AC_CHECK_FUNCS(siginterrupt)
AC_FUNC_ALLOCA
AC_FUNC_CLOSEDIR_VOID
AC_FUNC_CHOWN
AC_FUNC_FORK
AC_FUNC_LSTAT
AC_FUNC_MALLOC
AC_FUNC_MEMCMP
AC_FUNC_MMAP
AC_FUNC_REALLOC
AC_FUNC_STAT
AC_FUNC_STRTOD
AC_FUNC_VPRINTF

################################################################################
dnl -- Enables statically-linked tools
AC_MSG_CHECKING(whether to use static linking)
AC_ARG_ENABLE(static_link,
	      AC_HELP_STRING([--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 -- Prefix is /usr by default, the exec_prefix default is setup later
AC_PREFIX_DEFAULT(/usr)

################################################################################
dnl -- Setup the ownership of the files
AC_MSG_CHECKING(file owner)
AC_ARG_WITH(user,
	    AC_HELP_STRING([--with-user=USER],
			   [set the owner of installed files [[USER=]]]),
	    OWNER=$withval)
AC_MSG_RESULT($OWNER)

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

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

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

################################################################################
dnl -- Setup device node ownership
AC_MSG_CHECKING(device node uid)

AC_ARG_WITH(device-uid,
	    AC_HELP_STRING([--with-device-uid=UID],
			   [set the owner used for new device nodes [[UID=0]]]),
	    DM_DEVICE_UID=$withval, DM_DEVICE_UID=0)
AC_MSG_RESULT($DM_DEVICE_UID)

################################################################################
dnl -- Setup device group ownership
AC_MSG_CHECKING(device node gid)

AC_ARG_WITH(device-gid,
	    AC_HELP_STRING([--with-device-gid=GID],
			   [set the group used for new device nodes [[GID=0]]]),
	    DM_DEVICE_GID=$withval, DM_DEVICE_GID=0)
AC_MSG_RESULT($DM_DEVICE_GID)

################################################################################
dnl -- Setup device mode
AC_MSG_CHECKING(device node mode)

AC_ARG_WITH(device-mode,
	    AC_HELP_STRING([--with-device-mode=MODE],
			   [set the mode used for new device nodes [[MODE=0600]]]),
	    DM_DEVICE_MODE=$withval, DM_DEVICE_MODE=0600)
AC_MSG_RESULT($DM_DEVICE_MODE)

AC_MSG_CHECKING(when to create device nodes)
AC_ARG_WITH(device-nodes-on,
	    AC_HELP_STRING([--with-device-nodes-on=ON],
			   [create nodes on resume or create [[ON=resume]]]),
	    ADD_NODE=$withval, ADD_NODE=resume)
case "$ADD_NODE" in
 resume) add_on=DM_ADD_NODE_ON_RESUME;;
 create) add_on=DM_ADD_NODE_ON_CREATE;;
 *) AC_MSG_ERROR([--with-device-nodes-on parameter invalid]);;
esac
AC_MSG_RESULT(on $ADD_NODE)
AC_DEFINE_UNQUOTED([DEFAULT_DM_ADD_NODE], $add_on, [Define default node creation behavior with dmsetup create])

AC_MSG_CHECKING(default name mangling)
AC_ARG_WITH(default-name-mangling,
	    AC_HELP_STRING([--with-default-name-mangling=MANGLING],
			   [default name mangling: auto/none/hex [[MANGLING=auto]]]),
	    MANGLING=$withval, MANGLING=auto)
case "$MANGLING" in
 auto) mangling=DM_STRING_MANGLING_AUTO;;
 disabled) mangling=DM_STRING_MANGLING_NONE;;
 hex) mangling=DM_STRING_MANGLING_HEX;;
 *) AC_MSG_ERROR([--with-default-name-mangling parameter invalid]);;
esac
AC_MSG_RESULT($MANGLING)
AC_DEFINE_UNQUOTED([DEFAULT_DM_NAME_MANGLING], $mangling, [Define default name mangling behaviour])

################################################################################
dnl -- LVM1 tool fallback option
AC_MSG_CHECKING(whether to enable lvm1 fallback)
AC_ARG_ENABLE(lvm1_fallback,
	      AC_HELP_STRING([--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,
	    AC_HELP_STRING([--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,
	    AC_HELP_STRING([--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,
	    AC_HELP_STRING([--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,
	    AC_HELP_STRING([--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,
	    AC_HELP_STRING([--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 -- raid inclusion type
AC_MSG_CHECKING(whether to include raid)
AC_ARG_WITH(raid,
	    AC_HELP_STRING([--with-raid=TYPE],
			   [mirror support: internal/shared/none
			    [[TYPE=internal]]]),
	    RAID=$withval, RAID=internal)
AC_MSG_RESULT($RAID)

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

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

################################################################################
dnl -- asynchronous volume replicator inclusion type
AC_MSG_CHECKING(whether to include replicators)
AC_ARG_WITH(replicators,
	    AC_HELP_STRING([--with-replicators=TYPE],
			   [replicator support: internal/shared/none
			    [[TYPE=none]]]),
	    REPLICATORS=$withval, REPLICATORS=none)
AC_MSG_RESULT($REPLICATORS)

case "$REPLICATORS" in
  none|shared) ;;
  internal) AC_DEFINE([REPLICATOR_INTERNAL], 1,
		[Define to 1 to include built-in support for replicators.]) ;;
  *) AC_MSG_ERROR([--with-replicators parameter invalid ($REPLICATORS)]) ;;
esac

################################################################################
dnl -- thin provisioning
AC_MSG_CHECKING(whether to include thin provisioning)
AC_ARG_WITH(thin,
	    AC_HELP_STRING([--with-thin=TYPE],
			   [thin provisioning support: internal/shared/none
			    [[TYPE=none]]]),
	    THIN=$withval, THIN=none)
AC_MSG_RESULT($THIN)

case "$THIN" in
  none|shared) ;;
  internal) AC_DEFINE([THIN_INTERNAL], 1,
		[Define to 1 to include built-in support for thin provisioning.]) ;;
  *) AC_MSG_ERROR([--with-thin parameter invalid ($THIN)]) ;;
esac

case "$THIN" in
  internal|shared)
	AC_ARG_WITH(thin-check,
		AC_HELP_STRING([--with-thin-check=PATH],
			       [thin_check tool: [[autodetect]]]),
			       THIN_CHECK_CMD=$withval, THIN_CHECK_CMD="autodetect")
	# Empty means a config way to ignore thin checking
	if test "$THIN_CHECK_CMD" = "autodetect"; then
		AC_PATH_PROG(THIN_CHECK_CMD, thin_check)
		test -z "$THIN_CHECK_CMD" && AC_MSG_ERROR(thin_check not found in path $PATH)
	fi
	;;
esac

AC_DEFINE_UNQUOTED([THIN_CHECK_CMD], ["$THIN_CHECK_CMD"],
		   [The path to 'thin_check', if available.])


################################################################################
dnl -- Disable readline
AC_MSG_CHECKING(whether to enable readline)
AC_ARG_ENABLE([readline],
	      AC_HELP_STRING([--disable-readline], [disable readline support]),
	      READLINE=$enableval, READLINE=maybe)
AC_MSG_RESULT($READLINE)

################################################################################
dnl -- Disable realtime clock support
AC_MSG_CHECKING(whether to enable realtime support)
AC_ARG_ENABLE(realtime,
	      AC_HELP_STRING([--enable-realtime], [enable realtime clock support]),
	      REALTIME=$enableval)
AC_MSG_RESULT($REALTIME)

################################################################################
dnl -- disable OCF resource agents
AC_MSG_CHECKING(whether to enable OCF resource agents)
AC_ARG_ENABLE(ocf,
	      AC_HELP_STRING([--enable-ocf],
			     [enable Open Cluster Framework (OCF) compliant resource agents]),
	      OCF=$enableval, OCF=no)
AC_MSG_RESULT($OCF)
AC_ARG_WITH(ocfdir,
	    AC_HELP_STRING([--with-ocfdir=DIR],
			   [install OCF files in DIR [[PREFIX/lib/ocf/resource.d/lvm2]]]),
	    OCFDIR=$withval, OCFDIR='${prefix}/lib/ocf/resource.d/lvm2')

################################################################################
dnl -- Init pkg-config with dummy invokation:
dnl -- this is required because PKG_CHECK_MODULES macro is expanded
dnl -- to initialize the pkg-config environment only at the first invokation,
dnl -- that would be conditional in this configure.in.
pkg_config_init() {
	PKG_CHECK_MODULES(PKGCONFIGINIT, pkgconfiginit, [],
		[AC_MSG_RESULT([pkg-config initialized])])
	PKGCONFIG_INIT=1
}

################################################################################
dnl -- Set up pidfile and run directory
AH_TEMPLATE(DEFAULT_PID_DIR)
AC_ARG_WITH(default-pid-dir,
	    AC_HELP_STRING([--with-default-pid-dir=PID_DIR],
			   [Default directory to keep PID files in. [[/var/run]]]),
	    DEFAULT_PID_DIR="$withval", DEFAULT_PID_DIR="/var/run")
AC_DEFINE_UNQUOTED(DEFAULT_PID_DIR, ["$DEFAULT_PID_DIR"],
		   [Default directory to keep PID files in.])

AH_TEMPLATE(DEFAULT_DM_RUN_DIR, [Name of default DM run directory.])
AC_ARG_WITH(default-dm-run-dir,
	    AC_HELP_STRING([--with-default-dm-run-dir=DM_RUN_DIR],
			   [ Default DM run directory. [[/var/run]]]),
	    DEFAULT_DM_RUN_DIR="$withval", DEFAULT_DM_RUN_DIR="/var/run")
AC_DEFINE_UNQUOTED(DEFAULT_DM_RUN_DIR, ["$DEFAULT_DM_RUN_DIR"],
		   [Default DM run directory.])

AH_TEMPLATE(DEFAULT_RUN_DIR, [Name of default LVM run directory.])
AC_ARG_WITH(default-run-dir,
	    AC_HELP_STRING([--with-default-run-dir=RUN_DIR],
			   [Default LVM run directory. [[/var/run/lvm]]]),
	    DEFAULT_RUN_DIR="$withval", DEFAULT_RUN_DIR="/var/run/lvm")
AC_DEFINE_UNQUOTED(DEFAULT_RUN_DIR, ["$DEFAULT_RUN_DIR"],
		   [Default LVM run directory.])

################################################################################
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
                          The following cluster manager combinations are valid:
                           * cman                  (RHEL5 or equivalent)
                           * cman,corosync,openais (or selection of them)
                           * singlenode            (localhost only)
                           * all                   (autodetect)
                           * none                  (disable build)
                          [[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 -- init pkgconfig if required
if test x$CLVMD != xnone && test x$PKGCONFIG_INIT != x1; then
	pkg_config_init
fi

dnl -- Express clvmd init script Required-Start / Required-Stop
CLVMD_CMANAGERS=""
dnl -- On RHEL4/RHEL5, qdiskd is started from a separate init script.
dnl -- Enable if we are build for cman.
CLVMD_NEEDS_QDISKD=no

dnl -- define build types
if [[ `expr x"$CLVMD" : '.*gulm.*'` != 0 ]]; then
	AC_MSG_ERROR([Since version 2.02.87 GULM locking is no longer supported.]);
fi
if [[ `expr x"$CLVMD" : '.*cman.*'` != 0 ]]; then
	BUILDCMAN=yes
	CLVMD_CMANAGERS="$CLVMD_CMANAGERS cman"
	CLVMD_NEEDS_QDISKD=yes
fi
if [[ `expr x"$CLVMD" : '.*corosync.*'` != 0 ]]; then
	BUILDCOROSYNC=yes
	CLVMD_CMANAGERS="$CLVMD_CMANAGERS corosync"
fi
if [[ `expr x"$CLVMD" : '.*openais.*'` != 0 ]]; then
	BUILDOPENAIS=yes
	CLVMD_CMANAGERS="$CLVMD_CMANAGERS openais"
fi
if test x$CLVMD_NEEDS_QDISKD != xno; then
	CLVMD_CMANAGERS="$CLVMD_CMANAGERS qdiskd"
fi

dnl -- define a soft bailout if we are autodetecting
soft_bailout() {
	NOTFOUND=1
}

hard_bailout() {
	AC_MSG_ERROR([bailing out])
}

dnl -- if clvmd=all then set soft_bailout (we don't want to error)
dnl -- and set all builds to yes. We need to do this here
dnl -- to skip the openais|corosync sanity check above.
if test x$CLVMD = xall; then
	bailout=soft_bailout
	BUILDCMAN=yes
	BUILDCOROSYNC=yes
	BUILDOPENAIS=yes
else
	bailout=hard_bailout
fi

dnl -- helper macro to check libs without adding them to LIBS
check_lib_no_libs() {
	lib_no_libs_arg1=$1
	shift
	lib_no_libs_arg2=$1
	shift
	lib_no_libs_args=$@
	AC_CHECK_LIB([$lib_no_libs_arg1],
		     [$lib_no_libs_arg2],,
		     [$bailout],
		     [$lib_no_libs_args])
	LIBS=$ac_check_lib_save_LIBS
}

dnl -- Look for cman libraries if required.
if test x$BUILDCMAN = xyes; then
	PKG_CHECK_MODULES(CMAN, libcman, [HAVE_CMAN=yes],
		[NOTFOUND=0
		AC_CHECK_HEADERS(libcman.h,,$bailout)
		check_lib_no_libs cman cman_init
		if test $NOTFOUND = 0; then
			AC_MSG_RESULT([no pkg for libcman, using -lcman])
			CMAN_LIBS="-lcman"
			HAVE_CMAN=yes
		fi])
	CHECKCONFDB=yes
	CHECKDLM=yes
fi

dnl -- Look for corosync that's required also for openais build
dnl -- only enough recent version of corosync ship pkg-config files.
dnl -- We can safely rely on that to detect the correct bits.
if test x$BUILDCOROSYNC = xyes || \
   test x$BUILDOPENAIS = xyes; then
	PKG_CHECK_MODULES(COROSYNC, corosync, [HAVE_COROSYNC=yes], $bailout)
	CHECKCONFDB=yes
	CHECKCMAP=yes
fi

dnl -- Look for corosync libraries if required.
if test x$BUILDCOROSYNC = xyes; then
	PKG_CHECK_MODULES(QUORUM, libquorum, [HAVE_QUORUM=yes], $bailout)
	CHECKCPG=yes
	CHECKDLM=yes
fi

dnl -- Look for openais libraries if required.
if test x$BUILDOPENAIS = xyes; then
	PKG_CHECK_MODULES(SALCK, libSaLck, [HAVE_SALCK=yes], $bailout)
	CHECKCPG=yes
fi

dnl -- Below are checks for libraries common to more than one build.

dnl -- Check confdb library.
dnl -- mandatory for corosync < 2.0 build.
dnl -- optional for openais/cman build.

if test x$CHECKCONFDB = xyes; then
	PKG_CHECK_MODULES(CONFDB, libconfdb,
			  [HAVE_CONFDB=yes],
			  [HAVE_CONFDB=no])

	AC_CHECK_HEADERS(corosync/confdb.h,
		[HAVE_CONFDB_H=yes],
		[HAVE_CONFDB_H=no])

	if test x$HAVE_CONFDB != xyes && \
	   test x$HAVE_CONFDB_H = xyes; then
		check_lib_no_libs confdb confdb_initialize
		AC_MSG_RESULT([no pkg for confdb, using -lconfdb])
		CONFDB_LIBS="-lconfdb"
		HAVE_CONFDB=yes
	fi
fi

dnl -- Check cmap library
dnl -- mandatory for corosync >= 2.0 build.

if test x$CHECKCMAP = xyes; then
	PKG_CHECK_MODULES(CMAP, libcmap,
			  [HAVE_CMAP=yes],
			  [HAVE_CMAP=no])

	AC_CHECK_HEADERS(corosync/cmap.h,
		[HAVE_CMAP_H=yes],
		[HAVE_CMAP_H=no])

	if test x$HAVE_CMAP != xyes && \ 
	   test x$HAVE_CMAP_H = xyes; then
		check_lib_no_libs cmap cmap_initialize
		AC_MSG_RESULT([no pkg for cmap, using -lcmap])
		CMAP_LIBS="-lcmap"
		HAVE_CMAP=yes
	fi
fi

if test x$BUILDCOROSYNC = xyes; then
	if test x$HAVE_CMAP != xyes && \
	   test x$HAVE_CONFDB != xyes && \
	   test x$CLVMD != xall; then
		AC_MSG_ERROR([bailing out... cmap (corosync >= 2.0) or confdb (corosync < 2.0) library is required])
	fi
fi

dnl -- Check cpg library.
if test x$CHECKCPG = xyes; then
	PKG_CHECK_MODULES(CPG, libcpg, [HAVE_CPG=yes], $bailout)
fi

dnl -- Check dlm library.
if test x$CHECKDLM = xyes; then
	PKG_CHECK_MODULES(DLM, libdlm, [HAVE_DLM=yes],
		[NOTFOUND=0
		AC_CHECK_HEADERS(libdlm.h,,$bailout)
		check_lib_no_libs dlm dlm_lock -lpthread
		if test $NOTFOUND = 0; then
			AC_MSG_RESULT([no pkg for libdlm, using -ldlm])
			DLM_LIBS="-ldlm -lpthread"
			HAVE_DLM=yes
		fi])
fi

dnl -- If we are autodetecting, we need to re-create
dnl -- the depedencies checks and set a proper CLVMD,
dnl -- together with init script Required-Start/Stop entries.
if test x$CLVMD = xall; then
	CLVMD=none
	CLVMD_CMANAGERS=""
	CLVMD_NEEDS_QDISKD=no
	if test x$HAVE_CMAN = xyes && \
	   test x$HAVE_DLM = xyes; then
		AC_MSG_RESULT([Enabling clvmd cman cluster manager])
		CLVMD="$CLVMD,cman"
		CLVMD_CMANAGERS="$CLVMD_CMANAGERS cman"
		CLVMD_NEEDS_QDISKD=yes
	fi
	if test x$HAVE_COROSYNC = xyes && \
	   test x$HAVE_QUORUM = xyes && \
	   test x$HAVE_CPG = xyes && \
	   test x$HAVE_DLM = xyes; then
	   if test x$HAVE_CONFDB = xyes || test x$HAVE_CMAP = xyes; then
		AC_MSG_RESULT([Enabling clvmd corosync cluster manager])
		CLVMD="$CLVMD,corosync"
		CLVMD_CMANAGERS="$CLVMD_CMANAGERS corosync"
	   fi
	fi
	if test x$HAVE_COROSYNC = xyes && \
	   test x$HAVE_CPG = xyes && \
	   test x$HAVE_SALCK = xyes; then
		AC_MSG_RESULT([Enabling clvmd openais cluster manager])
		CLVMD="$CLVMD,openais"
		CLVMD_CMANAGERS="$CLVMD_CMANAGERS openais"
	fi
	if test x$CLVMD_NEEDS_QDISKD != xno; then
		CLVMD_CMANAGERS="$CLVMD_CMANAGERS qdiskd"
	fi
	if test x$CLVMD = xnone; then
		AC_MSG_RESULT([Disabling clvmd build. No cluster manager detected.])
	fi
fi

dnl -- Fixup CLVMD_CMANAGERS with new corosync
dnl -- clvmd built with corosync >= 2.0 needs dlm (either init or systemd service)
dnl -- to be started.
if [[ `expr x"$CLVMD" : '.*corosync.*'` != 0 ]]; then
   if test x$HAVE_CMAP = xyes; then
	CLVMD_CMANAGERS="$CLVMD_CMANAGERS dlm"
   fi
fi

################################################################################
dnl -- clvmd pidfile
if test "x$CLVMD" != xnone; then
	AC_ARG_WITH(clvmd-pidfile,
		    AC_HELP_STRING([--with-clvmd-pidfile=PATH],
				   [clvmd pidfile [[PID_DIR/clvmd.pid]]]),
		    CLVMD_PIDFILE=$withval,
		    CLVMD_PIDFILE="$DEFAULT_PID_DIR/clvmd.pid")
	AC_DEFINE_UNQUOTED(CLVMD_PIDFILE, ["$CLVMD_PIDFILE"],
			   [Path to clvmd pidfile.])
fi

################################################################################
dnl -- Build cluster mirror log daemon
AC_MSG_CHECKING(whether to build cluster mirror log daemon)
AC_ARG_ENABLE(cmirrord,
	      AC_HELP_STRING([--enable-cmirrord],
			     [enable the cluster mirror log daemon]),
	      CMIRRORD=$enableval, CMIRRORD=no)
AC_MSG_RESULT($CMIRRORD)

BUILD_CMIRRORD=$CMIRRORD

################################################################################
dnl -- cmirrord pidfile
if test "x$BUILD_CMIRRORD" = xyes; then
	AC_ARG_WITH(cmirrord-pidfile,
		    AC_HELP_STRING([--with-cmirrord-pidfile=PATH],
				   [cmirrord pidfile [[PID_DIR/cmirrord.pid]]]),
		    CMIRRORD_PIDFILE=$withval,
		    CMIRRORD_PIDFILE="$DEFAULT_PID_DIR/cmirrord.pid")
	AC_DEFINE_UNQUOTED(CMIRRORD_PIDFILE, ["$CMIRRORD_PIDFILE"],
			   [Path to cmirrord pidfile.])
fi

################################################################################
dnl -- Look for corosync libraries if required.
if [[ "x$BUILD_CMIRRORD" = xyes ]]; then
	dnl -- init pkgconfig if required
	if  test x$PKGCONFIG_INIT != x1; then
		pkg_config_init
	fi

	AC_DEFINE([CMIRROR_HAS_CHECKPOINT], 1, [Define to 1 to include libSaCkpt.])
	PKG_CHECK_MODULES(SACKPT, libSaCkpt, [HAVE_SACKPT=yes],
		[AC_MSG_RESULT([no libSaCkpt, compiling without it])
		AC_DEFINE([CMIRROR_HAS_CHECKPOINT], 0, [Define to 0 to exclude libSaCkpt.])])

	if test x$HAVE_CPG != xyes; then
		PKG_CHECK_MODULES(CPG, libcpg)
	fi
fi

################################################################################
dnl -- Enable debugging
AC_MSG_CHECKING(whether to enable debugging)
AC_ARG_ENABLE(debug, AC_HELP_STRING([--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,
	    AC_HELP_STRING([--with-optimisation=OPT],
			   [C optimisation flag [[OPT=-O2]]]),
	    COPTIMISE_FLAG=$withval)
AC_MSG_RESULT($COPTIMISE_FLAG)

################################################################################
dnl -- Enable profiling
AC_MSG_CHECKING(whether to gather gcov profiling data)
AC_ARG_ENABLE(profiling,
	      AC_HELP_STRING(--enable-profiling, [gather gcov profiling data]),
	      PROFILING=$enableval, PROFILING=no)
AC_MSG_RESULT($PROFILING)

if test "x$PROFILING" = xyes; then
  COPTIMISE_FLAG="$COPTIMISE_FLAG -fprofile-arcs -ftest-coverage"
  AC_PATH_PROG(LCOV, lcov)
  AC_PATH_PROG(GENHTML, genhtml)
  if test -z "$LCOV" -o -z "$GENHTML"; then
    AC_MSG_ERROR([lcov and genhtml are required for profiling])
  fi
  AC_PATH_PROG(GENPNG, genpng)
  if test -n "$GENPNG"; then
    AC_MSG_CHECKING([whether $GENPNG has all required modules])
    if $GENPNG --help > /dev/null 2>&1 ; then
      AC_MSG_RESULT(ok)
      GENHTML="$GENHTML --frames"
    else
      AC_MSG_RESULT(not supported)
      AC_MSG_WARN([GD.pm perl module is not installed])
      GENPNG=
    fi
  fi
fi

################################################################################
dnl -- Enable testing
AC_MSG_CHECKING(whether to enable unit testing)
AC_ARG_ENABLE(testing,
              AC_HELP_STRING(--enable-testing, [enable testing targets in the makefile]),
              TESTING=$enableval, TESTING=no)
AC_MSG_RESULT($TESTING)

if test "$TESTING" = yes; then
	PKG_CHECK_MODULES(CUNIT, cunit >= 2.0)
fi

################################################################################
dnl -- Enable valgrind awareness of memory pools
AC_MSG_CHECKING(whether to enable valgrind awareness of pools)
AC_ARG_ENABLE(valgrind_pool,
              AC_HELP_STRING(--enable-valgrind-pool, [enable valgrind awareness of pools]),
	      VALGRIND_POOL=$enableval, VALGRIND_POOL=no)
AC_MSG_RESULT($VALGRIND_POOL)

if test "$VALGRIND_POOL" = yes; then
    AC_CHECK_HEADERS([valgrind/memcheck.h], , [AC_MSG_ERROR(bailing out)])
    AC_DEFINE([VALGRIND_POOL], 1, [Enable a valgrind aware build of pool])
fi

################################################################################
dnl -- Disable devmapper
AC_MSG_CHECKING(whether to use device-mapper)
AC_ARG_ENABLE(devmapper,
	      AC_HELP_STRING([--disable-devmapper],
			     [disable LVM2 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 LVM2 device-mapper interaction.])
fi

################################################################################
dnl -- Build lvmetad
AC_MSG_CHECKING(whether to build LVMetaD)
AC_ARG_ENABLE(lvmetad,
	      AC_HELP_STRING([--enable-lvmetad],
			     [enable the LVM Metadata Daemon]),
	      LVMETAD=$enableval)
AC_MSG_RESULT($LVMETAD)

BUILD_LVMETAD=$LVMETAD

if test x$BUILD_LVMETAD = xyes; then
	AC_DEFINE([LVMETAD_SUPPORT], 1, [Define to 1 to include code that uses lvmetad.])

	AC_ARG_WITH(lvmetad-pidfile,
		    AC_HELP_STRING([--with-lvmetad-pidfile=PATH],
				   [lvmetad pidfile [[PID_DIR/lvmetad.pid]]]),
		    LVMETAD_PIDFILE=$withval,
		    LVMETAD_PIDFILE="$DEFAULT_PID_DIR/lvmetad.pid")
	AC_DEFINE_UNQUOTED(LVMETAD_PIDFILE, ["$LVMETAD_PIDFILE"],
			   [Path to lvmetad pidfile.])
fi

################################################################################
dnl -- Enable udev synchronisation
AC_MSG_CHECKING(whether to enable synchronisation with udev processing)
AC_ARG_ENABLE(udev_sync,
	      AC_HELP_STRING([--enable-udev_sync], 
			     [enable synchronisation with udev processing]),
	      UDEV_SYNC=$enableval, UDEV_SYNC=no)
AC_MSG_RESULT($UDEV_SYNC)

if test x$UDEV_SYNC = xyes; then
	dnl -- init pkgconfig if required
	if  test x$PKGCONFIG_INIT != x1; then
		pkg_config_init
	fi
	PKG_CHECK_MODULES(UDEV, libudev >= 143, [UDEV_PC="libudev"])
	AC_DEFINE([UDEV_SYNC_SUPPORT], 1, [Define to 1 to enable synchronisation with udev processing.])
fi

dnl -- Enable udev rules
AC_MSG_CHECKING(whether to enable installation of udev rules required for synchronisation)
AC_ARG_ENABLE(udev_rules,
	      AC_HELP_STRING([--enable-udev_rules],
			     [install rule files needed for udev synchronisation]),
	      UDEV_RULES=$enableval, UDEV_RULES=$UDEV_SYNC)
AC_MSG_RESULT($UDEV_RULES)

AC_MSG_CHECKING(whether to enable executable path detection in udev rules)
AC_ARG_ENABLE(udev_rule_exec_detection,
	      AC_HELP_STRING([--enable-udev-rule-exec-detection],
			     [enable executable path detection in udev rules]),
	      UDEV_RULE_EXEC_DETECTION=$enableval, UDEV_RULE_EXEC_DETECTION=no)
AC_MSG_RESULT($UDEV_RULE_EXEC_DETECTION)

dnl -- Check support for built-in blkid against target udev version
AC_MSG_CHECKING(whether udev supports built-in blkid)
test x$PKGCONFIG_INIT != x1 && pkg_config_init
if $($PKG_CONFIG --atleast-version=176 libudev); then
	UDEV_HAS_BUILTIN_BLKID=yes
else
	UDEV_HAS_BUILTIN_BLKID=no
fi
AC_MSG_RESULT($UDEV_HAS_BUILTIN_BLKID)

################################################################################
dnl -- Compatibility mode
AC_ARG_ENABLE(compat,
	      AC_HELP_STRING([--enable-compat],
			     [enable support for old device-mapper versions]),
	      DM_COMPAT=$enableval, DM_COMPAT=no)

if test x$DM_COMPAT = xyes; then
	AC_MSG_ERROR(
                 [--enable-compat is not currently supported.
Since device-mapper version 1.02.66, only one version (4) of the device-mapper 
ioctl protocol is supported.]
	)
fi

################################################################################
dnl -- Compatible units suffix mode
AC_ARG_ENABLE(units-compat,
	      AC_HELP_STRING([--enable-units-compat],
			     [enable output compatibility with old versions that
			      that do not use KiB-style unit suffixes]),
	      UNITS_COMPAT=$enableval, UNITS_COMPAT=no)

if test x$UNITS_COMPAT = xyes; then
	AC_DEFINE([DEFAULT_SI_UNIT_CONSISTENCY], 0, [Define to 0 to reinstate the pre-2.02.54 handling of unit suffixes.])
fi

################################################################################
dnl -- Disable ioctl
AC_ARG_ENABLE(ioctl,
	      AC_HELP_STRING([--disable-driver],
			     [disable calls to device-mapper in the kernel]),
	      DM_IOCTLS=$enableval)

################################################################################
dnl -- Disable O_DIRECT
AC_MSG_CHECKING(whether to enable O_DIRECT)
AC_ARG_ENABLE(o_direct,
	      AC_HELP_STRING([--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 liblvm2app.so
AC_MSG_CHECKING(whether to build liblvm2app.so application library)
AC_ARG_ENABLE(applib,
	      AC_HELP_STRING([--enable-applib], [build application library]),
	      APPLIB=$enableval, APPLIB=no)
AC_MSG_RESULT($APPLIB)
AC_SUBST([LVM2APP_LIB])
test x$APPLIB = xyes \
  && LVM2APP_LIB=-llvm2app \
  || LVM2APP_LIB=

################################################################################
dnl -- Enable cmdlib
AC_MSG_CHECKING(whether to compile liblvm2cmd.so)
AC_ARG_ENABLE(cmdlib,
	      AC_HELP_STRING([--enable-cmdlib], [build shared command library]),
	      CMDLIB=$enableval, CMDLIB=no)
AC_MSG_RESULT($CMDLIB)
AC_SUBST([LVM2CMD_LIB])
test x$CMDLIB = xyes \
  && LVM2CMD_LIB=-llvm2cmd \
  || LVM2CMD_LIB=

################################################################################
dnl -- Enable pkg-config
AC_ARG_ENABLE(pkgconfig,
	      AC_HELP_STRING([--enable-pkgconfig], [install pkgconfig support]),
	      PKGCONFIG=$enableval, PKGCONFIG=no)

################################################################################
dnl -- Enable installation of writable files by user
AC_ARG_ENABLE(write_install,
	      AC_HELP_STRING([--enable-write_install],
			     [install user writable files]),
	      WRITE_INSTALL=$enableval, WRITE_INSTALL=no)

################################################################################
dnl -- Enable fsadm
AC_MSG_CHECKING(whether to install fsadm)
AC_ARG_ENABLE(fsadm, AC_HELP_STRING([--disable-fsadm], [disable fsadm]),
	      FSADM=$enableval)
AC_MSG_RESULT($FSADM)

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

BUILD_DMEVENTD=$DMEVENTD

dnl -- dmeventd currently requires internal mirror support
if test x$DMEVENTD = xyes; then
   if test x$MIRRORS != xinternal; then
      AC_MSG_ERROR(
	--enable-dmeventd currently requires --with-mirrors=internal
      )
   fi
   if test x$CMDLIB = xno; then
      AC_MSG_ERROR(
        --enable-dmeventd requires --enable-cmdlib to be used as well
      )
   fi
fi

if test x$DMEVENTD = xyes; then
	AC_DEFINE([DMEVENTD], 1, [Define to 1 to enable the device-mapper event daemon.])
fi

################################################################################
dnl -- getline included in recent libc

AC_CHECK_LIB(c, getline, AC_DEFINE([HAVE_GETLINE], 1,
  [Define to 1 if getline is available.]))

################################################################################
dnl -- canonicalize_file_name included in recent libc

AC_CHECK_LIB(c, canonicalize_file_name,
  AC_DEFINE([HAVE_CANONICALIZE_FILE_NAME], 1,
    [Define to 1 if canonicalize_file_name is available.]))

################################################################################
dnl -- Clear default exec_prefix - install into /sbin rather than /usr/sbin
if [[ "x$exec_prefix" = xNONE -a "x$prefix" = xNONE ]];
 then  exec_prefix="";
fi;

################################################################################
dnl -- Check for dlopen
AC_CHECK_LIB(dl, dlopen, [
	AC_DEFINE([HAVE_LIBDL], 1, [Define to 1 if dynamic libraries are available.])
	DL_LIBS="-ldl"
	HAVE_LIBDL=yes ], [
	DL_LIBS=
	HAVE_LIBDL=no ])

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

################################################################################
if [[ "$DMEVENTD" = yes -o "$CLVMD" != none ]] ; then
	AC_CHECK_LIB([pthread], [pthread_mutex_lock],
		[PTHREAD_LIBS="-lpthread"], hard_bailout)
fi

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

################################################################################
dnl -- Check for selinux
if test x$SELINUX = xyes; then
	AC_CHECK_LIB([sepol], [sepol_check_context], [
		AC_DEFINE([HAVE_SEPOL], 1, [Define to 1 if sepol_check_context is available.])
		SELINUX_LIBS="-lsepol"])

	AC_CHECK_LIB([selinux], [is_selinux_enabled], [
		AC_CHECK_HEADERS([selinux/selinux.h],, hard_bailout)
		AC_CHECK_HEADERS([selinux/label.h])
		AC_DEFINE([HAVE_SELINUX], 1, [Define to 1 to include support for selinux.])
		SELINUX_LIBS="-lselinux $SELINUX_LIBS"
		SELINUX_PC="libselinux"
		HAVE_SELINUX=yes ], [
		AC_MSG_WARN(Disabling selinux)
		SELINUX_LIBS=
		SELINUX_PC=
		HAVE_SELINUX=no ])
fi

################################################################################
dnl -- Check for realtime clock support
if test x$REALTIME = xyes; then
	AC_CHECK_LIB(rt, clock_gettime, HAVE_REALTIME=yes, HAVE_REALTIME=no)

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

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

################################################################################
dnl -- Check for readline (Shamelessly copied from parted 1.4.17)
if test x$READLINE != xno; then
	lvm_saved_libs=$LIBS
	AC_SEARCH_LIBS([tgetent], [tinfo ncurses curses termcap termlib],
		READLINE_LIBS=$ac_cv_search_tgetent, [
		if test "$READLINE" = yes; then
			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 -- Old systems may need extra termcap dependency explicitly in LIBS
	AC_CHECK_LIB([readline], [readline], [
		AC_DEFINE([READLINE_SUPPORT], 1,
			[Define to 1 to include the LVM readline shell.])
		dnl -- Try only with -lreadline and check for different symbol
		LIBS=$lvm_saved_libs
		AC_CHECK_LIB([readline], [rl_line_buffer],
			[ READLINE_LIBS="-lreadline" ], [
			  AC_MSG_RESULT([linking -lreadline with $READLINE_LIBS needed])
			  READLINE_LIBS="-lreadline $READLINE_LIBS"
			]) ], [
		READLINE_LIBS=
		if test "$READLINE" = yes; then
			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).])
		fi ])
	LIBS="$READLINE_LIBS $lvm_saved_libs"
	AC_CHECK_FUNCS([rl_completion_matches])
	LIBS=$lvm_saved_libs
fi

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

if test x$INTL = xyes; then
# FIXME - Move this - can be device-mapper too
	INTL_PACKAGE="lvm2"
	AC_PATH_PROG(MSGFMT, msgfmt)
	if [[ "x$MSGFMT" == x ]];
		then  AC_MSG_ERROR(
		msgfmt not found in path $PATH
		)
	fi;

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

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

AC_ARG_WITH(staticdir,
	    AC_HELP_STRING([--with-staticdir=DIR],
			   [static binaries in DIR [[EPREFIX/sbin]]]),
	    STATICDIR=$withval, STATICDIR='${exec_prefix}/sbin')

AC_ARG_WITH(usrlibdir,
	    AC_HELP_STRING([--with-usrlibdir=DIR],
			   [usrlib in DIR [[PREFIX/lib]]]),
	    usrlibdir=$withval, usrlibdir='${prefix}/lib')

AC_ARG_WITH(usrsbindir,
	    AC_HELP_STRING([--with-usrsbindir=DIR],
			   [usrsbin executables in DIR [[PREFIX/sbin]]]),
	    usrsbindir=$withval, usrsbindir='${prefix}/sbin')

################################################################################
AC_ARG_WITH(udev_prefix,
	    AC_HELP_STRING([--with-udev-prefix=UPREFIX],
			   [install udev rule files in UPREFIX [[EPREFIX]]]),
	    udev_prefix=$withval, udev_prefix='${exec_prefix}')

AC_ARG_WITH(udevdir,
	    AC_HELP_STRING([--with-udevdir=DIR],
			   [udev rules in DIR [[UPREFIX/lib/udev/rules.d]]]),
	    udevdir=$withval, udevdir='${udev_prefix}/lib/udev/rules.d')

################################################################################
dnl -- Get the systemd system unit dir value from pkg_config automatically if value not given explicitly.
dnl -- This follows the recommendation for systemd integration best practices mentioned in daemon(7) manpage.
AC_ARG_WITH(systemdsystemunitdir,
	    AC_HELP_STRING([--with-systemdsystemunitdir=DIR],
			   [systemd service files in DIR]),
	    systemdsystemunitdir=$withval,
	    dnl -- init pkgconfig if required
	    test x$PKGCONFIG_INIT != x1 && pkg_config_init
	    pkg_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd))

if test -n "$pkg_systemdsystemunitdir"; then
	    systemdsystemunitdir=$pkg_systemdsystemunitdir;
fi

if test -z "$systemdsystemunitdir"; then
	    systemdsystemunitdir='${exec_prefix}/lib/systemd/system';
fi

systemdutildir=$($PKG_CONFIG --variable=systemdutildir systemd)
if test -z "$systemdutildir"; then
	    systemdutildir='${exec_prefix}/lib/systemd';
fi
################################################################################
AC_ARG_WITH(tmpfilesdir,
	    AC_HELP_STRING([--with-tmpfilesdir=DIR],
			   [install configuration files for management of volatile files and directories in DIR [[PREFIX/lib/tmpfiles.d]]]),
			   tmpfilesdir=$withval, tmpfilesdir='${prefix}/lib/tmpfiles.d')
################################################################################
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_SELECT_ARGTYPES
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$DMEVENTD = xyes; then
	AC_CHECK_HEADERS(arpa/inet.h,,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

if test x$UDEV_SYNC = xyes; then
	AC_CHECK_HEADERS(sys/ipc.h sys/sem.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


lvm_exec_prefix=$exec_prefix
test "$lvm_exec_prefix" = NONE && lvm_exec_prefix=$prefix
test "$lvm_exec_prefix" = NONE && lvm_exec_prefix=$ac_default_prefix
LVM_PATH="$lvm_exec_prefix/sbin/lvm"
AC_DEFINE_UNQUOTED(LVM_PATH, ["$LVM_PATH"], [Path to lvm binary.])

if  test "$CLVMD" != none; then
        clvmd_prefix=$ac_default_prefix
        CLVMD_PATH="$clvmd_prefix/sbin/clvmd"
        test "$prefix" != NONE && clvmd_prefix=$prefix
	AC_DEFINE_UNQUOTED(CLVMD_PATH, ["$CLVMD_PATH"], [Path to clvmd binary.])
fi

################################################################################
dnl -- dmeventd pidfile and executable path
if test "$BUILD_DMEVENTD" = yes; then
	AC_ARG_WITH(dmeventd-pidfile,
		    AC_HELP_STRING([--with-dmeventd-pidfile=PATH],
				   [dmeventd pidfile [[PID_DIR/dmeventd.pid]]]),
		    DMEVENTD_PIDFILE=$withval,
		    DMEVENTD_PIDFILE="$DEFAULT_PID_DIR/dmeventd.pid")
	AC_DEFINE_UNQUOTED(DMEVENTD_PIDFILE, ["$DMEVENTD_PIDFILE"],
			   [Path to dmeventd pidfile.])
fi

if test "$BUILD_DMEVENTD" = yes; then
	AC_ARG_WITH(dmeventd-path,
		    AC_HELP_STRING([--with-dmeventd-path=PATH],
				   [dmeventd path [[EPREFIX/sbin/dmeventd]]]),
		    DMEVENTD_PATH=$withval,
		    DMEVENTD_PATH="$lvm_exec_prefix/sbin/dmeventd")
	AC_DEFINE_UNQUOTED(DMEVENTD_PATH, ["$DMEVENTD_PATH"],
			   [Path to dmeventd binary.])
fi

################################################################################
dnl -- various defaults
AC_ARG_WITH(default-system-dir,
	    AC_HELP_STRING([--with-default-system-dir=DIR],
			   [default LVM system directory [[/etc/lvm]]]),
	    DEFAULT_SYS_DIR=$withval, DEFAULT_SYS_DIR="/etc/lvm")
AC_DEFINE_UNQUOTED(DEFAULT_SYS_DIR, ["$DEFAULT_SYS_DIR"],
		   [Path to LVM system directory.])

AC_ARG_WITH(default-archive-subdir,
	    AC_HELP_STRING([--with-default-archive-subdir=SUBDIR],
			   [default metadata archive subdir [[archive]]]),
	    DEFAULT_ARCHIVE_SUBDIR=$withval, DEFAULT_ARCHIVE_SUBDIR=archive)
AC_DEFINE_UNQUOTED(DEFAULT_ARCHIVE_SUBDIR, ["$DEFAULT_ARCHIVE_SUBDIR"],
		   [Name of default metadata archive subdirectory.])

AC_ARG_WITH(default-backup-subdir,
	    AC_HELP_STRING([--with-default-backup-subdir=SUBDIR],
			   [default metadata backup subdir [[backup]]]),
	    DEFAULT_BACKUP_SUBDIR=$withval, DEFAULT_BACKUP_SUBDIR=backup)
AC_DEFINE_UNQUOTED(DEFAULT_BACKUP_SUBDIR, ["$DEFAULT_BACKUP_SUBDIR"],
                   [Name of default metadata backup subdirectory.])

AC_ARG_WITH(default-cache-subdir,
	    AC_HELP_STRING([--with-default-cache-subdir=SUBDIR],
			   [default metadata cache subdir [[cache]]]),
	    DEFAULT_CACHE_SUBDIR=$withval, DEFAULT_CACHE_SUBDIR=cache)
AC_DEFINE_UNQUOTED(DEFAULT_CACHE_SUBDIR, ["$DEFAULT_CACHE_SUBDIR"],
		   [Name of default metadata cache subdirectory.])

AC_ARG_WITH(default-locking-dir,
	    AC_HELP_STRING([--with-default-locking-dir=DIR],
			   [default locking directory [[/var/lock/lvm]]]),
	    DEFAULT_LOCK_DIR=$withval, DEFAULT_LOCK_DIR="/var/lock/lvm")
AC_DEFINE_UNQUOTED(DEFAULT_LOCK_DIR, ["$DEFAULT_LOCK_DIR"],
		   [Name of default locking directory.])

################################################################################
dnl -- Setup default data alignment
AC_ARG_WITH(default-data-alignment,
	    AC_HELP_STRING([--with-default-data-alignment=NUM],
			   [set the default data alignment in MiB [[1]]]),
	    DEFAULT_DATA_ALIGNMENT=$withval, DEFAULT_DATA_ALIGNMENT=1)
AC_DEFINE_UNQUOTED(DEFAULT_DATA_ALIGNMENT, [$DEFAULT_DATA_ALIGNMENT],
		   [Default data alignment.])

################################################################################
dnl -- which kernel interface to use (ioctl only)
AC_MSG_CHECKING(for kernel interface choice)
AC_ARG_WITH(interface,
	    AC_HELP_STRING([--with-interface=IFACE],
			   [choose kernel interface (ioctl) [[ioctl]]]),
	    interface=$withval, interface=ioctl)
if [[ "x$interface" != xioctl ]];
then
  AC_MSG_ERROR(--with-interface=ioctl required. fs no longer supported.)
fi
AC_MSG_RESULT($interface)

################################################################################
DM_LIB_VERSION="\"`cat "$srcdir"/VERSION_DM 2>/dev/null || echo Unknown`\""
AC_DEFINE_UNQUOTED(DM_LIB_VERSION, $DM_LIB_VERSION, [Library version])

DM_LIB_PATCHLEVEL=`cat "$srcdir"/VERSION_DM | $AWK -F '[[-. ]]' '{printf "%s.%s.%s",$1,$2,$3}'`

LVM_VERSION="\"`cat "$srcdir"/VERSION 2>/dev/null || echo Unknown`\""

VER=`cat "$srcdir"/VERSION`
LVM_RELEASE_DATE="\"`echo $VER | $SED 's/.* (//;s/).*//'`\""
VER=`echo "$VER" | $AWK '{print $1}'`
LVM_RELEASE="\"`echo "$VER" | $AWK -F '-' '{print $2}'`\""
VER=`echo "$VER" | $AWK -F '-' '{print $1}'`
LVM_MAJOR=`echo "$VER" | $AWK -F '.' '{print $1}'`
LVM_MINOR=`echo "$VER" | $AWK -F '.' '{print $2}'`
LVM_PATCHLEVEL=`echo "$VER" | $AWK -F '[[(.]]' '{print $3}'`
LVM_LIBAPI=`echo "$VER" | $AWK -F '[[()]]' '{print $2}'`

################################################################################
AC_SUBST(APPLIB)
AC_SUBST(AWK)
AC_SUBST(BUILD_CMIRRORD)
AC_SUBST(BUILD_DMEVENTD)
AC_SUBST(BUILD_LVMETAD)
AC_SUBST(CFLAGS)
AC_SUBST(CFLOW_CMD)
AC_SUBST(CLDFLAGS)
AC_SUBST(CLDNOWHOLEARCHIVE)
AC_SUBST(CLDWHOLEARCHIVE)
AC_SUBST(CLUSTER)
AC_SUBST(CLVMD)
AC_SUBST(CLVMD_CMANAGERS)
AC_SUBST(CLVMD_PATH)
AC_SUBST(CMAN_CFLAGS)
AC_SUBST(CMAN_LIBS)
AC_SUBST(CMAP_CFLAGS)
AC_SUBST(CMAP_LIBS)
AC_SUBST(CMDLIB)
AC_SUBST(CONFDB_CFLAGS)
AC_SUBST(CONFDB_LIBS)
AC_SUBST(CONFDIR)
AC_SUBST(COPTIMISE_FLAG)
AC_SUBST(CPG_CFLAGS)
AC_SUBST(CPG_LIBS)
AC_SUBST(CSCOPE_CMD)
AC_SUBST(DEBUG)
AC_SUBST(DEFAULT_SYS_DIR)
AC_SUBST(DEFAULT_ARCHIVE_SUBDIR)
AC_SUBST(DEFAULT_BACKUP_SUBDIR)
AC_SUBST(DEFAULT_CACHE_SUBDIR)
AC_SUBST(DEFAULT_DATA_ALIGNMENT)
AC_SUBST(DEFAULT_LOCK_DIR)
AC_SUBST(DEFAULT_DM_RUN_DIR)
AC_SUBST(DEFAULT_RUN_DIR)
AC_SUBST(DEVMAPPER)
AC_SUBST(DLM_CFLAGS)
AC_SUBST(DLM_LIBS)
AC_SUBST(DL_LIBS)
AC_SUBST(DMEVENTD)
AC_SUBST(DMEVENTD_PATH)
AC_SUBST(DM_COMPAT)
AC_SUBST(DM_DEVICE_GID)
AC_SUBST(DM_DEVICE_MODE)
AC_SUBST(DM_DEVICE_UID)
AC_SUBST(DM_IOCTLS)
AC_SUBST(DM_LIB_VERSION)
AC_SUBST(DM_LIB_PATCHLEVEL)
AC_SUBST(ELDFLAGS)
AC_SUBST(FSADM)
AC_SUBST(HAVE_LIBDL)
AC_SUBST(HAVE_REALTIME)
AC_SUBST(INTL)
AC_SUBST(INTL_PACKAGE)
AC_SUBST(JOBS)
AC_SUBST(LDDEPS)
AC_SUBST(LIBS)
AC_SUBST(LIB_SUFFIX)
AC_SUBST(LOCALEDIR)
AC_SUBST(LVM1)
AC_SUBST(LVM1_FALLBACK)
AC_SUBST(LVM_VERSION)
AC_SUBST(LVM_LIBAPI)
AC_SUBST(LVM_MAJOR)
AC_SUBST(LVM_MINOR)
AC_SUBST(LVM_PATCHLEVEL)
AC_SUBST(LVM_PATH)
AC_SUBST(LVM_RELEASE)
AC_SUBST(LVM_RELEASE_DATE)
AC_SUBST(MIRRORS)
AC_SUBST(MSGFMT)
AC_SUBST(OCF)
AC_SUBST(OCFDIR)
AC_SUBST(PKGCONFIG)
AC_SUBST(POOL)
AC_SUBST(PTHREAD_LIBS)
AC_SUBST(QUORUM_CFLAGS)
AC_SUBST(QUORUM_LIBS)
AC_SUBST(RAID)
AC_SUBST(READLINE_LIBS)
AC_SUBST(REPLICATORS)
AC_SUBST(SACKPT_CFLAGS)
AC_SUBST(SACKPT_LIBS)
AC_SUBST(SALCK_CFLAGS)
AC_SUBST(SALCK_LIBS)
AC_SUBST(SELINUX_LIBS)
AC_SUBST(SELINUX_PC)
AC_SUBST(SNAPSHOTS)
AC_SUBST(STATICDIR)
AC_SUBST(STATIC_LINK)
AC_SUBST(TESTING)
AC_SUBST(THIN)
AC_SUBST(THIN_CHECK_CMD)
AC_SUBST(UDEV_LIBS)
AC_SUBST(UDEV_PC)
AC_SUBST(UDEV_RULES)
AC_SUBST(UDEV_SYNC)
AC_SUBST(UDEV_RULE_EXEC_DETECTION)
AC_SUBST(UDEV_HAS_BUILTIN_BLKID)
AC_SUBST(CUNIT_LIBS)
AC_SUBST(CUNIT_CFLAGS)
AC_SUBST(WRITE_INSTALL)
AC_SUBST(DMEVENTD_PIDFILE)
AC_SUBST(LVMETAD_PIDFILE)
AC_SUBST(interface)
AC_SUBST(kerneldir)
AC_SUBST(missingkernel)
AC_SUBST(kernelvsn)
AC_SUBST(tmpdir)
AC_SUBST(udev_prefix)
AC_SUBST(udevdir)
AC_SUBST(systemdsystemunitdir)
AC_SUBST(systemdutildir)
AC_SUBST(tmpfilesdir)
AC_SUBST(usrlibdir)
AC_SUBST(usrsbindir)

################################################################################
dnl -- First and last lines should not contain files to generate in order to
dnl -- keep utility scripts running properly
AC_CONFIG_FILES([
Makefile
make.tmpl
daemons/Makefile
daemons/clvmd/Makefile
daemons/cmirrord/Makefile
daemons/dmeventd/Makefile
daemons/dmeventd/libdevmapper-event.pc
daemons/dmeventd/plugins/Makefile
daemons/dmeventd/plugins/lvm2/Makefile
daemons/dmeventd/plugins/raid/Makefile
daemons/dmeventd/plugins/mirror/Makefile
daemons/dmeventd/plugins/snapshot/Makefile
daemons/dmeventd/plugins/thin/Makefile
daemons/lvmetad/Makefile
doc/Makefile
doc/example.conf
include/.symlinks
include/Makefile
lib/Makefile
lib/format1/Makefile
lib/format_pool/Makefile
lib/locking/Makefile
lib/mirror/Makefile
lib/replicator/Makefile
lib/misc/lvm-version.h
lib/raid/Makefile
lib/snapshot/Makefile
lib/thin/Makefile
libdaemon/Makefile
libdaemon/client/Makefile
libdaemon/server/Makefile
libdm/Makefile
libdm/libdevmapper.pc
liblvm/Makefile
liblvm/liblvm2app.pc
man/Makefile
po/Makefile
scripts/clvmd_init_red_hat
scripts/cmirrord_init_red_hat
scripts/lvm2_lvmetad_init_red_hat
scripts/lvm2_lvmetad_systemd_red_hat.socket
scripts/lvm2_lvmetad_systemd_red_hat.service
scripts/lvm2_monitoring_init_red_hat
scripts/dm_event_systemd_red_hat.socket
scripts/dm_event_systemd_red_hat.service
scripts/lvm2_monitoring_systemd_red_hat.service
scripts/lvm2_tmpfiles_red_hat.conf
scripts/Makefile
test/Makefile
test/api/Makefile
test/unit/Makefile
tools/Makefile
udev/Makefile
unit-tests/datastruct/Makefile
unit-tests/regex/Makefile
unit-tests/mm/Makefile
])
AC_OUTPUT

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