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	diff --git a/configure.ac b/configure.ac
	index 343af9a520..4061f600fb 100644
	--- a/configure.ac
	+++ b/configure.ac
	@@ -1,1946 +1,1994 @@
	dnl
	dnl autoconf for Pacemaker
	dnl
	dnl Copyright 2009-2019 the Pacemaker project contributors
	dnl
	dnl The version control history for this file may have further details.
	dnl
	dnl This source code is licensed under the GNU General Public License version 2
	dnl or later (GPLv2+) WITHOUT ANY WARRANTY.

	dnl ===============================================
	dnl Bootstrap
	dnl ===============================================
	AC_PREREQ(2.64)

	AC_CONFIG_MACRO_DIR([m4])
	AC_DEFUN([AC_DATAROOTDIR_CHECKED])

	dnl Suggested structure:
	dnl information on the package
	dnl checks for programs
	dnl checks for libraries
	dnl checks for header files
	dnl checks for types
	dnl checks for structures
	dnl checks for compiler characteristics
	dnl checks for library functions
	dnl checks for system services

	m4_include([version.m4])
	AC_INIT([pacemaker], VERSION_NUMBER, [users@clusterlabs.org], [pacemaker],
	PCMK_URL)

	PCMK_FEATURES=""

	AC_CONFIG_AUX_DIR(.)
	AC_CANONICAL_HOST

	dnl Where #defines go (e.g. `AC_CHECK_HEADERS' below)
	dnl
	dnl Internal header: include/config.h
	dnl - Contains ALL defines
	dnl - include/config.h.in is generated automatically by autoheader
	dnl - NOT to be included in any header files except crm_internal.h
	dnl (which is also not to be included in any other header files)
	dnl
	dnl External header: include/crm_config.h
	dnl - Contains a subset of defines checked here
	dnl - Manually edit include/crm_config.h.in to have configure include
	dnl new defines
	dnl - Should not include HAVE_* defines
	dnl - Safe to include anywhere
	AC_CONFIG_HEADERS([include/config.h include/crm_config.h])

	-AC_ARG_WITH(version,
	- [ --with-version=version Override package version (if you are a packager needing to pretend) ],
	- [ PACKAGE_VERSION="$withval" ])
	-
	dnl 1.11: minimum automake version required
	dnl foreign: don't require GNU-standard top-level files
	dnl tar-ustar: use (older) POSIX variant of generated tar rather than v7
	dnl silent-rules: allow "--enable-silent-rules" (no-op in 1.13+)
	dnl subdir-objects: keep .o's with their .c's (no-op in 2.0+)
	AM_INIT_AUTOMAKE([1.11 foreign tar-ustar silent-rules subdir-objects])

	dnl Example 2.4. Silent Custom Rule to Generate a File
	dnl %-bar.pc: %.pc
	dnl $(AM_V_GEN)$(LN_S) $(notdir $^) $@

	-AC_DEFINE_UNQUOTED(PACEMAKER_VERSION, "$PACKAGE_VERSION",
	- [Current pacemaker version])
	-
	dnl Versioned attributes implementation is not yet production-ready
	AC_DEFINE_UNQUOTED(ENABLE_VERSIONED_ATTRS, 0, [Enable versioned attributes])

	-PACKAGE_SERIES=`echo $PACKAGE_VERSION \| awk -F. '{ print $1"."$2 }'`
	-AC_SUBST(PACKAGE_SERIES)
	-AC_SUBST(PACKAGE_VERSION)
	-
	CC_IN_CONFIGURE=yes
	export CC_IN_CONFIGURE

	LDD=ldd

	dnl ========================================================================
	dnl Compiler characteristics
	dnl ========================================================================

	AC_PROG_CC dnl Can force other with environment variable "CC".
	AC_PROG_CC_STDC
	AC_PROG_CXX dnl C++ is not needed for build, just maintainer utilities

	gl_EARLY
	# We expressly don't want to introduce OpenSSL dependency by default.
	gl_SET_CRYPTO_CHECK_DEFAULT([no])
	gl_INIT

	LT_INIT([dlopen])
	LTDL_INIT([convenience])

	AC_TYPE_SIZE_T
	AC_CHECK_SIZEOF(char)
	AC_CHECK_SIZEOF(short)
	AC_CHECK_SIZEOF(int)
	AC_CHECK_SIZEOF(long)
	AC_CHECK_SIZEOF(long long)

	dnl ===============================================
	dnl Helpers
	dnl ===============================================
	cc_supports_flag() {
	local CFLAGS="-Werror $@"
	AC_MSG_CHECKING(whether $CC supports "$@")
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ ]], [[ ]])],
	[RC=0; AC_MSG_RESULT(yes)],
	[RC=1; AC_MSG_RESULT(no)])
	return $RC
	}

	# Some tests need to use their own CFLAGS

	cc_temp_flags() {
	ac_save_CFLAGS="$CFLAGS"
	CFLAGS="$*"
	}

	cc_restore_flags() {
	CFLAGS=$ac_save_CFLAGS
	}

	dnl ===============================================
	dnl Configure Options
	dnl ===============================================

	+
	+dnl --enable-* options
	+
	AC_ARG_ENABLE([ansi],
	- [ --enable-ansi Force GCC to compile to ANSI standard for older compilers. @<:@no@:>@])
	+ [AS_HELP_STRING([--enable-ansi],
	+ [force GCC to compile to ANSI standard for older compilers. @<:@no@:>@])],
	+)

	AC_ARG_ENABLE([fatal-warnings],
	- [ --enable-fatal-warnings Enable pedantic and fatal warnings for gcc @<:@yes@:>@])
	+ [AS_HELP_STRING([--enable-fatal-warnings],
	+ [enable pedantic and fatal warnings for gcc @<:@yes@:>@])],
	+)

	AC_ARG_ENABLE([quiet],
	- [ --enable-quiet Suppress make output unless there is an error @<:@no@:>@])
	+ [AS_HELP_STRING([--enable-quiet],
	+ [suppress make output unless there is an error @<:@no@:>@])],
	+)

	AC_ARG_ENABLE([no-stack],
	- [ --enable-no-stack Build only the scheduler and its requirements @<:@no@:>@])
	+ [AS_HELP_STRING([--enable-no-stack],
	+ [build only the scheduler and its requirements @<:@no@:>@])],
	+)

	AC_ARG_ENABLE([upstart],
	- [ --enable-upstart Enable support for managing resources via Upstart @<:@try@:>@ ],
	+ [AS_HELP_STRING([--enable-upstart],
	+ [enable support for managing resources via Upstart @<:@try@:>@])],
	[],
	[enable_upstart=try],
	)

	AC_ARG_ENABLE([systemd],
	- [ --enable-systemd Enable support for managing resources via systemd @<:@try@:>@],
	+ [AS_HELP_STRING([--enable-systemd],
	+ [enable support for managing resources via systemd @<:@try@:>@])],
	[],
	[enable_systemd=try],
	)

	-AC_ARG_ENABLE(hardening,
	- [ --enable-hardening Harden the resulting executables/libraries @<:@try@:>@],
	+AC_ARG_ENABLE([hardening],
	+ [AS_HELP_STRING([--enable-hardening],
	+ [harden the resulting executables/libraries @<:@try@:>@])],
	[ HARDENING="${enableval}" ],
	[ HARDENING=try ],
	)

	# By default, we add symlinks at the pre-2.0.0 daemon name locations, so that:
	# (1) tools that directly invoke those names for metadata etc. will still work
	# (2) this installation can be used in a bundle container image used with
	# cluster hosts running Pacemaker 1.1.17+
	# If you know your target systems will not have any need for it, you can
	# disable this option. Once the above use cases are no longer in wide use, we
	# can disable this option by default, and once we no longer want to support
	# them at all, we can drop the option altogether.
	-AC_ARG_ENABLE(legacy-links,
	- [ --enable-legacy-links Add symlinks for old daemon names @<:@yes@:>@],
	+AC_ARG_ENABLE([legacy-links],
	+ [AS_HELP_STRING([--enable-legacy-links],
	+ [add symlinks for old daemon names @<:@yes@:>@])],
	[ LEGACY_LINKS="${enableval}" ],
	[ LEGACY_LINKS=yes ],
	)
	AM_CONDITIONAL(BUILD_LEGACY_LINKS, test "x${LEGACY_LINKS}" = "xyes")

	-AC_ARG_WITH(corosync,
	- [ --with-corosync Support the Corosync messaging and membership layer ],
	+
	+dnl --with-* options
	+
	+AC_DEFUN([VERSION_ARG],
	+ [AC_ARG_WITH([version],
	+ [AS_HELP_STRING([--with-version=VERSION],
	+ [override package version @<:@$1@:>@])],
	+ [ PACKAGE_VERSION="$withval" ])]
	+)
	+VERSION_ARG(VERSION_NUMBER)
	+
	+AC_ARG_WITH([corosync],
	+ [AS_HELP_STRING([--with-corosync],
	+ [support the Corosync messaging and membership layer])],
	[ SUPPORT_CS=$withval ],
	[ SUPPORT_CS=try ],
	)

	-AC_ARG_WITH(nagios,
	- [ --with-nagios Support nagios remote monitoring ],
	+AC_ARG_WITH([nagios],
	+ [AS_HELP_STRING([--with-nagios],
	+ [support nagios remote monitoring])],
	[ SUPPORT_NAGIOS=$withval ],
	[ SUPPORT_NAGIOS=try ],
	)

	-AC_ARG_WITH(nagios-plugin-dir,
	- [ --with-nagios-plugin-dir=DIR Directory for nagios plugins @<:@LIBEXECDIR/nagios/plugins@:>@],
	+AC_ARG_WITH([nagios-plugin-dir],
	+ [AS_HELP_STRING([--with-nagios-plugin-dir=DIR],
	+ [directory for nagios plugins @<:@LIBEXECDIR/nagios/plugins@:>@])],
	[ NAGIOS_PLUGIN_DIR="$withval" ]
	)

	-AC_ARG_WITH(nagios-metadata-dir,
	- [ --with-nagios-metadata-dir=DIR Directory for nagios plugins metadata @<:@DATADIR/nagios/plugins-metadata@:>@],
	+AC_ARG_WITH([nagios-metadata-dir],
	+ [AS_HELP_STRING([--with-nagios-metadata-dir=DIR],
	+ [directory for nagios plugins metadata @<:@DATADIR/nagios/plugins-metadata@:>@])],
	[ NAGIOS_METADATA_DIR="$withval" ]
	)

	-AC_ARG_WITH(acl,
	- [ --with-acl Support CIB ACL ],
	+AC_ARG_WITH([acl],
	+ [AS_HELP_STRING([--with-acl],
	+ [support CIB ACL])],
	[ SUPPORT_ACL=$withval ],
	[ SUPPORT_ACL=yes ],
	)

	-AC_ARG_WITH(cibsecrets,
	- [ --with-cibsecrets Support separate file for CIB secrets ],
	+AC_ARG_WITH([cibsecrets],
	+ [AS_HELP_STRING([--with-cibsecrets],
	+ [support separate file for CIB secrets])],
	[ SUPPORT_CIBSECRETS=$withval ],
	[ SUPPORT_CIBSECRETS=no ],
	)

	PCMK_GNUTLS_PRIORITIES="NORMAL"
	-AC_ARG_WITH(gnutls-priorities,
	- [ --with-gnutls-priorities Default GnuTLS cipher priorities @<:@NORMAL@:>@ ],
	- [ test x"$withval" = x"no" \|\| PCMK_GNUTLS_PRIORITIES="$withval" ])
	+AC_ARG_WITH([gnutls-priorities],
	+ [AS_HELP_STRING([--with-gnutls-priorities],
	+ [default GnuTLS cipher priorities @<:@NORMAL@:>@])],
	+ [ test x"$withval" = x"no" \|\| PCMK_GNUTLS_PRIORITIES="$withval" ]
	+)

	INITDIR=""
	-AC_ARG_WITH(initdir,
	- [ --with-initdir=DIR Directory for init (rc) scripts],
	- [ INITDIR="$withval" ])
	+AC_ARG_WITH([initdir],
	+ [AS_HELP_STRING([--with-initdir=DIR],
	+ [directory for init (rc) scripts])],
	+ [ INITDIR="$withval" ]
	+)

	SUPPORT_PROFILING=0
	-AC_ARG_WITH(profiling,
	- [ --with-profiling Disable optimizations for effective profiling ],
	- [ SUPPORT_PROFILING=$withval ])
	+AC_ARG_WITH([profiling],
	+ [AS_HELP_STRING([--with-profiling],
	+ [disable optimizations for effective profiling])],
	+ [ SUPPORT_PROFILING=$withval ]
	+)

	-AC_ARG_WITH(coverage,
	- [ --with-coverage Disable optimizations for effective profiling ],
	- [ SUPPORT_COVERAGE=$withval ])
	+AC_ARG_WITH([coverage],
	+ [AS_HELP_STRING([--with-coverage],
	+ [disable optimizations for effective profiling])],
	+ [ SUPPORT_COVERAGE=$withval ]
	+)

	PUBLICAN_BRAND="common"
	-AC_ARG_WITH(brand,
	- [ --with-brand=brand Brand to use for generated documentation (set empty for no docs) @<:@common@:>@],
	- [ test x"$withval" = x"no" \|\| PUBLICAN_BRAND="$withval" ])
	+AC_ARG_WITH([brand],
	+ [AS_HELP_STRING([--with-brand=brand],
	+ [brand to use for generated documentation (set empty for no docs) @<:@common@:>@])],
	+ [ test x"$withval" = x"no" \|\| PUBLICAN_BRAND="$withval" ]
	+)
	AC_SUBST(PUBLICAN_BRAND)

	BUG_URL=""
	-AC_ARG_WITH(bug-url,
	- [ --with-bug-url=DIR Address where users should submit bug reports @<:@https://bugs.clusterlabs.org/enter_bug.cgi?product=Pacemaker@:>@],
	+AC_ARG_WITH([bug-url],
	+ [AS_HELP_STRING([--with-bug-url=DIR],
	+ [address where users should submit bug reports @<:@https://bugs.clusterlabs.org/enter_bug.cgi?product=Pacemaker@:>@])],
	[ BUG_URL="$withval" ]
	)

	CONFIGDIR=""
	-AC_ARG_WITH(configdir,
	- [ --with-configdir=DIR Directory for Pacemaker configuration file @<:@SYSCONFDIR/sysconfig@:>@],
	+AC_ARG_WITH([configdir],
	+ [AS_HELP_STRING([--with-configdir=DIR],
	+ [directory for Pacemaker configuration file @<:@SYSCONFDIR/sysconfig@:>@])],
	[ CONFIGDIR="$withval" ]
	)

	CRM_LOG_DIR=""
	-AC_ARG_WITH(logdir,
	- [ --with-logdir=DIR Directory for Pacemaker log file @<:@LOCALSTATEDIR/log/pacemaker@:>@ ],
	+AC_ARG_WITH([logdir],
	+ [AS_HELP_STRING([--with-logdir=DIR],
	+ [directory for Pacemaker log file @<:@LOCALSTATEDIR/log/pacemaker@:>@])],
	[ CRM_LOG_DIR="$withval" ]
	)

	CRM_BUNDLE_DIR=""
	-AC_ARG_WITH(bundledir,
	- [ --with-bundledir=DIR Directory for Pacemaker bundle logs @<:@LOCALSTATEDIR/log/pacemaker/bundles@:>@ ],
	+AC_ARG_WITH([bundledir],
	+ [AS_HELP_STRING([--with-bundledir=DIR],
	+ [directory for Pacemaker bundle logs @<:@LOCALSTATEDIR/log/pacemaker/bundles@:>@])],
	[ CRM_BUNDLE_DIR="$withval" ]
	)

	CRM_DAEMON_USER=""
	-AC_ARG_WITH(daemon-user,
	- [ --with-daemon-user=USER User to run unprivileged Pacemaker daemons as (advanced option: changing this may break other cluster components unless similarly configured) @<:@hacluster@:>@ ],
	+AC_ARG_WITH([daemon-user],
	+ [AS_HELP_STRING([--with-daemon-user=USER],
	+ [user to run unprivileged Pacemaker daemons as (advanced option: changing this may break other cluster components unless similarly configured) @<:@hacluster@:>@])],
	[ CRM_DAEMON_USER="$withval" ]
	)

	CRM_DAEMON_GROUP=""
	-AC_ARG_WITH(daemon-group,
	- [ --with-daemon-group=GROUP Group to run unprivileged Pacemaker daemons as (advanced option: changing this may break other cluster components unless similarly configured) @<:@haclient@:>@ ],
	+AC_ARG_WITH([daemon-group],
	+ [AS_HELP_STRING([--with-daemon-group=GROUP],
	+ [group to run unprivileged Pacemaker daemons as (advanced option: changing this may break other cluster components unless similarly configured) @<:@haclient@:>@])],
	[ CRM_DAEMON_GROUP="$withval" ]
	)

	+
	dnl Deprecated options

	-AC_ARG_WITH(pkg-name,
	- [ --with-pkg-name=name Deprecated and unused (will be removed in a future release) ],
	+AC_ARG_WITH([pkg-name],
	+ [AS_HELP_STRING([--with-pkg-name=name],
	+ [deprecated and unused (will be removed in a future release)])],
	)

	-AC_ARG_WITH(pkgname,
	- [ --with-pkgname=name Deprecated and unused (will be removed in a future release) ],
	+AC_ARG_WITH([pkgname],
	+ [AS_HELP_STRING([--with-pkgname=name],
	+ [deprecated and unused (will be removed in a future release)])],
	)

	+
	dnl ===============================================
	dnl General Processing
	dnl ===============================================

	+AC_DEFINE_UNQUOTED(PACEMAKER_VERSION, "$PACKAGE_VERSION",
	+ [Current pacemaker version])
	+
	+PACKAGE_SERIES=`echo $PACKAGE_VERSION \| awk -F. '{ print $1"."$2 }'`
	+AC_SUBST(PACKAGE_SERIES)
	+AC_SUBST(PACKAGE_VERSION)
	+
	AC_PROG_LN_S
	AC_PROG_MKDIR_P

	if cc_supports_flag -Werror; then
	WERROR="-Werror"
	else
	WERROR=""
	fi

	# Normalize enable_fatal_warnings (defaulting to yes, when compiler supports it)
	if test "x${enable_fatal_warnings}" != "xno" ; then
	if test "$GCC" = "yes" && test "x${WERROR}" != "x" ; then
	enable_fatal_warnings=yes
	else
	AC_MSG_NOTICE(Compiler does not support fatal warnings)
	enable_fatal_warnings=no
	fi
	fi

	INIT_EXT=""
	echo Our Host OS: $host_os/$host

	AC_MSG_NOTICE(Sanitizing prefix: ${prefix})
	case $prefix in
	NONE)
	prefix=/usr
	dnl Fix default variables - "prefix" variable if not specified
	if test "$localstatedir" = "\${prefix}/var"; then
	localstatedir="/var"
	fi
	if test "$sysconfdir" = "\${prefix}/etc"; then
	sysconfdir="/etc"
	fi
	;;
	esac

	AC_MSG_NOTICE(Sanitizing exec_prefix: ${exec_prefix})
	case $exec_prefix in
	prefix\|NONE)
	exec_prefix=$prefix
	;;
	esac

	AC_MSG_NOTICE(Sanitizing INITDIR: ${INITDIR})
	case $INITDIR in
	prefix) INITDIR=$prefix;;
	"")
	AC_MSG_CHECKING(which init (rc) directory to use)
	for initdir in /etc/init.d /etc/rc.d/init.d /sbin/init.d \
	/usr/local/etc/rc.d /etc/rc.d
	do
	if
	test -d $initdir
	then
	INITDIR=$initdir
	break
	fi
	done
	AC_MSG_RESULT($INITDIR)
	;;
	esac
	AC_SUBST(INITDIR)

	AC_MSG_NOTICE(Sanitizing libdir: ${libdir})
	case $libdir in
	prefix\|NONE)
	AC_MSG_CHECKING(which lib directory to use)
	for aDir in lib64 lib
	do
	trydir="${exec_prefix}/${aDir}"
	if
	test -d ${trydir}
	then
	libdir=${trydir}
	break
	fi
	done
	AC_MSG_RESULT($libdir);
	;;
	esac

	dnl Expand autoconf variables so that we don't end up with '${prefix}'
	dnl in #defines and python scripts
	dnl NOTE: Autoconf deliberately leaves them unexpanded to allow
	dnl make exec_prefix=/foo install
	dnl No longer being able to do this seems like no great loss to me...

	eval prefix="`eval echo ${prefix}`"
	eval exec_prefix="`eval echo ${exec_prefix}`"
	eval bindir="`eval echo ${bindir}`"
	eval sbindir="`eval echo ${sbindir}`"
	eval libexecdir="`eval echo ${libexecdir}`"
	eval datadir="`eval echo ${datadir}`"
	eval sysconfdir="`eval echo ${sysconfdir}`"
	eval sharedstatedir="`eval echo ${sharedstatedir}`"
	eval localstatedir="`eval echo ${localstatedir}`"
	eval libdir="`eval echo ${libdir}`"
	eval includedir="`eval echo ${includedir}`"
	eval oldincludedir="`eval echo ${oldincludedir}`"
	eval infodir="`eval echo ${infodir}`"
	eval mandir="`eval echo ${mandir}`"

	dnl Home-grown variables
	eval INITDIR="${INITDIR}"
	eval docdir="`eval echo ${docdir}`"
	if test x"${docdir}" = x""; then
	docdir=${datadir}/doc/${PACKAGE}-${VERSION}
	fi
	AC_SUBST(docdir)
	if test x"${CONFIGDIR}" = x""; then
	CONFIGDIR="${sysconfdir}/sysconfig"
	fi
	AC_SUBST(CONFIGDIR)

	if test x"${CRM_LOG_DIR}" = x""; then
	CRM_LOG_DIR="${localstatedir}/log/pacemaker"
	fi
	AC_DEFINE_UNQUOTED(CRM_LOG_DIR,"$CRM_LOG_DIR", Location for Pacemaker log file)
	AC_SUBST(CRM_LOG_DIR)

	if test x"${CRM_BUNDLE_DIR}" = x""; then
	CRM_BUNDLE_DIR="${localstatedir}/log/pacemaker/bundles"
	fi
	AC_DEFINE_UNQUOTED(CRM_BUNDLE_DIR,"$CRM_BUNDLE_DIR", Location for Pacemaker bundle logs)
	AC_SUBST(CRM_BUNDLE_DIR)


	if test x"${PCMK_GNUTLS_PRIORITIES}" = x""; then
	AC_MSG_ERROR([Empty string not applicable with --with-gnutls-priorities])
	fi
	AC_DEFINE_UNQUOTED([PCMK_GNUTLS_PRIORITIES], ["$PCMK_GNUTLS_PRIORITIES"],
	[GnuTLS cipher priorities])

	if test x"${BUG_URL}" = x""; then
	BUG_URL="https://bugs.clusterlabs.org/enter_bug.cgi?product=Pacemaker"
	fi
	AC_SUBST(BUG_URL)

	for j in prefix exec_prefix bindir sbindir libexecdir datadir sysconfdir \
	sharedstatedir localstatedir libdir includedir oldincludedir infodir \
	mandir INITDIR docdir CONFIGDIR
	do
	dirname=`eval echo '${'${j}'}'`
	if
	test ! -d "$dirname"
	then
	AC_MSG_WARN([$j directory ($dirname) does not exist!])
	fi
	done

	us_auth=
	AC_CHECK_HEADER([sys/socket.h], [
	AC_CHECK_DECL([SO_PEERCRED], [
	# Linux
	AC_CHECK_TYPE([struct ucred], [
	us_auth=peercred_ucred;
	AC_DEFINE([US_AUTH_PEERCRED_UCRED], [1],
	[Define if Unix socket auth method is
	getsockopt(s, SO_PEERCRED, &ucred, ...)])
	], [
	# OpenBSD
	AC_CHECK_TYPE([struct sockpeercred], [
	us_auth=localpeercred_sockepeercred;
	AC_DEFINE([US_AUTH_PEERCRED_SOCKPEERCRED], [1],
	[Define if Unix socket auth method is
	getsockopt(s, SO_PEERCRED, &sockpeercred, ...)])
	], [], [[#include <sys/socket.h>]])
	], [[#define _GNU_SOURCE
	#include <sys/socket.h>]])
	], [], [[#include <sys/socket.h>]])
	])

	if test -z "${us_auth}"; then
	# FreeBSD
	AC_CHECK_DECL([getpeereid], [
	us_auth=getpeereid;
	AC_DEFINE([US_AUTH_GETPEEREID], [1],
	[Define if Unix socket auth method is
	getpeereid(s, &uid, &gid)])
	], [
	# Solaris/OpenIndiana
	AC_CHECK_DECL([getpeerucred], [
	us_auth=getpeerucred;
	AC_DEFINE([US_AUTH_GETPEERUCRED], [1],
	[Define if Unix socket auth method is
	getpeercred(s, &ucred)])
	], [
	AC_MSG_ERROR([No way to authenticate a Unix socket peer])
	], [[#include <ucred.h>]])
	])
	fi

	dnl This OS-based decision-making is poor autotools practice;
	dnl feature-based mechanisms are strongly preferred.
	dnl
	dnl So keep this section to a bare minimum; regard as a "necessary evil".

	case "$host_os" in
	bsd)
	AC_DEFINE_UNQUOTED(ON_BSD, 1, Compiling for BSD platform)
	LIBS="-L/usr/local/lib"
	CPPFLAGS="$CPPFLAGS -I/usr/local/include"
	INIT_EXT=".sh"
	;;
	solaris)
	AC_DEFINE_UNQUOTED(ON_SOLARIS, 1, Compiling for Solaris platform)
	;;
	linux)
	AC_DEFINE_UNQUOTED(ON_LINUX, 1, Compiling for Linux platform)
	;;
	darwin*)
	AC_DEFINE_UNQUOTED(ON_DARWIN, 1, Compiling for Darwin platform)
	LIBS="$LIBS -L${prefix}/lib"
	CFLAGS="$CFLAGS -I${prefix}/include"
	;;
	esac

	AC_SUBST(INIT_EXT)
	AC_MSG_NOTICE(Host CPU: $host_cpu)

	case "$host_cpu" in
	ppc64\|powerpc64)
	case $CFLAGS in
	powerpc64)
	;;
	*)
	if test "$GCC" = yes; then
	CFLAGS="$CFLAGS -m64"
	fi
	;;
	esac
	;;
	esac

	# C99 doesn't guarantee uint64_t type and related format specifiers, but
	# prerequisites, corosync + libqb, use that widely, so the target platforms
	# are already pre-constrained to those "64bit-clean" (doesn't imply native
	# bit width) and hence we deliberately refrain from artificial surrogates
	# (sans manipulation through cached values).
	AC_CACHE_VAL(
	[pcmk_cv_decl_inttypes],
	[
	AC_CHECK_DECLS(
	[PRIu64, PRIu32, PRIx32,
	SCNu64],
	[pcmk_cv_decl_inttypes="PRIu64 PRIu32 PRIx32 SCNu64"],
	[
	# test shall only react on "no" cached result & error out respectively
	if test "x$ac_cv_have_decl_PRIu64" = xno; then
	AC_MSG_ERROR([lack of inttypes.h based specifier serving uint64_t (PRIu64)])
	elif test "x$ac_cv_have_decl_PRIu32" = xno; then
	AC_MSG_ERROR([lack of inttypes.h based specifier serving uint32_t (PRIu32)])
	elif test "x$ac_cv_have_decl_PRIx32" = xno; then
	AC_MSG_ERROR([lack of inttypes.h based hexa specifier serving uint32_t (PRIx32)])
	elif test "x$ac_cv_have_decl_SCNu64" = xno; then
	AC_MSG_ERROR([lack of inttypes.h based specifier gathering uint64_t (SCNu64)])
	fi
	],
	[[#include <inttypes.h>]]
	)
	]
	)
	(
	set $pcmk_cv_decl_inttypes
	AC_DEFINE_UNQUOTED([U64T], [$1], [Correct format specifier for U64T])
	AC_DEFINE_UNQUOTED([U32T], [$2], [Correct format specifier for U32T])
	AC_DEFINE_UNQUOTED([X32T], [$3], [Correct format specifier for X32T])
	AC_DEFINE_UNQUOTED([U64TS], [$4], [Correct format specifier for U64TS])
	)

	dnl ===============================================
	dnl Program Paths
	dnl ===============================================

	PATH="$PATH:/sbin:/usr/sbin:/usr/local/sbin:/usr/local/bin"
	export PATH

	dnl Replacing AC_PROG_LIBTOOL with AC_CHECK_PROG because LIBTOOL
	dnl was NOT being expanded all the time thus causing things to fail.
	AC_CHECK_PROGS(LIBTOOL, glibtool libtool libtool15 libtool13)

	dnl Pacemaker's executable python scripts will invoke the python specified by
	dnl configure's PYTHON variable. If not specified, AM_PATH_PYTHON will check a
	dnl built-in list with (unversioned) "python" having precedence. To configure
	dnl Pacemaker to use a specific python interpreter version, define PYTHON
	dnl when calling configure, for example: ./configure PYTHON=/usr/bin/python3.6

	dnl Ensure PYTHON is an absolute path
	AC_PATH_PROG([PYTHON], [$PYTHON])

	case "x$PYTHON" in
	xpython3\|xplatform-python)
	dnl When used with Python 3, Pacemaker requires a minimum of 3.2
	AM_PATH_PYTHON([3.2])
	;;
	*)
	dnl Otherwise, Pacemaker requires a minimum of 2.7
	AM_PATH_PYTHON([2.7])
	;;
	esac

	AC_PATH_PROGS([ASCIIDOC_CONV], [asciidoc asciidoctor])
	AC_PATH_PROG([HELP2MAN], [help2man])
	AC_PATH_PROG([PUBLICAN], [publican])
	AC_PATH_PROG([INKSCAPE], [inkscape])
	AC_PATH_PROG([XSLTPROC], [xsltproc])
	AC_PATH_PROG([XMLCATALOG], [xmlcatalog])
	dnl BASH is already an environment variable, so use something else
	AC_PATH_PROG([BASH_PATH], [bash])

	PKG_PROG_PKG_CONFIG
	# PKG_NOARCH_INSTALLDIR not available prior to pkg-config 0.27 and
	# pkgconf 0.8.10, respectively (next line is to mimic that scenario)
	dnl m4_ifdef([PKG_NOARCH_INSTALLDIR], [m4_undefine([PKG_NOARCH_INSTALLDIR])])
	m4_ifndef([PKG_NOARCH_INSTALLDIR], [
	AC_DEFUN([PKG_NOARCH_INSTALLDIR], [
	AC_SUBST([noarch_pkgconfigdir], ['${datadir}/pkgconfig'])
	])
	])
	PKG_NOARCH_INSTALLDIR

	AC_PATH_PROGS(VALGRIND_BIN, valgrind, /usr/bin/valgrind)
	AC_DEFINE_UNQUOTED(VALGRIND_BIN, "$VALGRIND_BIN", Valgrind command)

	if test x"${LIBTOOL}" = x""; then
	AC_MSG_ERROR(You need (g)libtool installed in order to build ${PACKAGE})
	fi

	dnl Bash is needed for building man pages and running regression tests
	if test x"${BASH_PATH}" = x""; then
	AC_MSG_ERROR(bash must be installed in order to build ${PACKAGE})
	fi

	AM_CONDITIONAL(BUILD_HELP, test x"${HELP2MAN}" != x"")
	if test x"${HELP2MAN}" != x""; then
	PCMK_FEATURES="$PCMK_FEATURES generated-manpages"
	fi

	MANPAGE_XSLT=""
	if test x"${XSLTPROC}" != x""; then
	AC_MSG_CHECKING(docbook to manpage transform)
	# first try to figure out correct template using xmlcatalog query,
	# resort to extensive (semi-deterministic) file search if that fails
	DOCBOOK_XSL_URI='http://docbook.sourceforge.net/release/xsl/current'
	DOCBOOK_XSL_PATH='manpages/docbook.xsl'
	MANPAGE_XSLT=$(${XMLCATALOG} "" ${DOCBOOK_XSL_URI}/${DOCBOOK_XSL_PATH} \
	\| sed -n 's\|^file://\|\|p;q')
	if test x"${MANPAGE_XSLT}" = x""; then
	DIRS=$(find "${datadir}" -name $(basename $(dirname ${DOCBOOK_XSL_PATH})) \
	-type d \| LC_ALL=C sort)
	XSLT=$(basename ${DOCBOOK_XSL_PATH})
	for d in ${DIRS}; do
	if test -f "${d}/${XSLT}"; then
	MANPAGE_XSLT="${d}/${XSLT}"
	break
	fi
	done
	fi
	fi
	AC_MSG_RESULT($MANPAGE_XSLT)
	AC_SUBST(MANPAGE_XSLT)

	AM_CONDITIONAL(BUILD_XML_HELP, test x"${MANPAGE_XSLT}" != x"")
	if test x"${MANPAGE_XSLT}" != x""; then
	PCMK_FEATURES="$PCMK_FEATURES agent-manpages"
	fi

	AM_CONDITIONAL([IS_ASCIIDOC], [echo "${ASCIIDOC_CONV}" \| grep -Eq 'asciidoc$'])
	AM_CONDITIONAL([BUILD_ASCIIDOC], [test "x${ASCIIDOC_CONV}" != x])
	if test "x${ASCIIDOC_CONV}" != x; then
	PCMK_FEATURES="$PCMK_FEATURES ascii-docs"
	fi

	publican_intree_brand=no
	if test x"${PUBLICAN_BRAND}" != x"" \
	&& test x"${PUBLICAN}" != x"" \
	&& test x"${INKSCAPE}" != x""; then

	dnl special handling for clusterlabs brand (possibly in-tree version used)
	test "${PUBLICAN_BRAND}" != "clusterlabs" \
	\|\| test -d /usr/share/publican/Common_Content/clusterlabs
	if test $? -ne 0; then
	dnl Unknown option: brand_dir vs. Option brand_dir requires an argument
	if ${PUBLICAN} build --brand_dir 2>&1 \| grep -Eq 'brand_dir$'; then
	AC_MSG_WARN([Cannot use in-tree clusterlabs brand, resorting to common])
	PUBLICAN_BRAND=common
	else
	publican_intree_brand=yes
	fi
	fi
	AC_MSG_NOTICE([Enabling Publican-generated documentation using ${PUBLICAN_BRAND} brand])
	PCMK_FEATURES="$PCMK_FEATURES publican-docs"
	fi
	AM_CONDITIONAL([BUILD_DOCBOOK],
	[test x"${PUBLICAN_BRAND}" != x"" \
	&& test x"${PUBLICAN}" != x"" \
	&& test x"${INKSCAPE}" != x""])
	AM_CONDITIONAL([PUBLICAN_INTREE_BRAND],
	[test x"${publican_intree_brand}" = x"yes"])

	dnl Pacemaker's shell scripts (and thus man page builders) rely on GNU getopt
	AC_MSG_CHECKING([for GNU-compatible getopt])
	IFS_orig=$IFS
	IFS=:
	for PATH_DIR in $PATH; do
	IFS=$IFS_orig
	GETOPT_PATH="${PATH_DIR}/getopt"
	if test -f "$GETOPT_PATH" && test -x "$GETOPT_PATH" ; then
	$GETOPT_PATH -T >/dev/null 2>/dev/null
	if test $? -eq 4; then
	break
	fi
	fi
	GETOPT_PATH=""
	done
	IFS=$IFS_orig
	if test -n "$GETOPT_PATH"; then
	AC_MSG_RESULT([$GETOPT_PATH])
	else
	AC_MSG_RESULT([no])
	AC_MSG_ERROR(Pacemaker build requires a GNU-compatible getopt)
	fi
	AC_SUBST([GETOPT_PATH])

	dnl ========================================================================
	dnl checks for library functions to replace them
	dnl
	dnl NoSuchFunctionName:
	dnl is a dummy function which no system supplies. It is here to make
	dnl the system compile semi-correctly on OpenBSD which doesn't know
	dnl how to create an empty archive
	dnl
	dnl scandir: Only on BSD.
	dnl System-V systems may have it, but hidden and/or deprecated.
	dnl A replacement function is supplied for it.
	dnl
	dnl setenv: is some bsdish function that should also be avoided (use
	dnl putenv instead)
	dnl On the other hand, putenv doesn't provide the right API for the
	dnl code and has memory leaks designed in (sigh...) Fortunately this
	dnl A replacement function is supplied for it.
	dnl
	dnl strerror: returns a string that corresponds to an errno.
	dnl A replacement function is supplied for it.
	dnl
	dnl strnlen: is a gnu function similar to strlen, but safer.
	dnl We wrote a tolearably-fast replacement function for it.
	dnl
	dnl strndup: is a gnu function similar to strdup, but safer.
	dnl We wrote a tolearably-fast replacement function for it.

	AC_REPLACE_FUNCS(alphasort NoSuchFunctionName scandir setenv strerror strchrnul unsetenv strnlen strndup)

	dnl ===============================================
	dnl Libraries
	dnl ===============================================
	AC_CHECK_LIB(socket, socket) dnl -lsocket
	AC_CHECK_LIB(c, dlopen) dnl if dlopen is in libc...
	AC_CHECK_LIB(dl, dlopen) dnl -ldl (for Linux)
	AC_CHECK_LIB(rt, sched_getscheduler) dnl -lrt (for Tru64)
	AC_CHECK_LIB(gnugetopt, getopt_long) dnl -lgnugetopt ( if available )
	AC_CHECK_LIB(pam, pam_start) dnl -lpam (if available)

	AC_CHECK_FUNCS([sched_setscheduler])
	if test "$ac_cv_func_sched_setscheduler" != yes; then
	PC_LIBS_RT=""
	else
	PC_LIBS_RT="-lrt"
	fi
	AC_SUBST(PC_LIBS_RT)

	AC_CHECK_LIB(uuid, uuid_parse) dnl load the library if necessary
	AC_CHECK_FUNCS(uuid_unparse) dnl OSX ships uuid_* as standard functions

	AC_CHECK_HEADERS(uuid/uuid.h)

	if test "x$ac_cv_func_uuid_unparse" != xyes; then
	AC_MSG_ERROR(You do not have the libuuid development package installed)
	fi

	if test x"${PKG_CONFIG}" = x""; then
	AC_MSG_ERROR(You need pkgconfig installed in order to build ${PACKAGE})
	fi

	# Require glib 2.16.0 (2008-03) or later for g_hash_table_iter_init() etc.
	PKG_CHECK_MODULES([GLIB], [glib-2.0 >= 2.16.0],
	[CPPFLAGS="${CPPFLAGS} ${GLIB_CFLAGS}"
	LIBS="${LIBS} ${GLIB_LIBS}"])

	#
	# Where is dlopen?
	#
	if test "$ac_cv_lib_c_dlopen" = yes; then
	LIBADD_DL=""
	elif test "$ac_cv_lib_dl_dlopen" = yes; then
	LIBADD_DL=-ldl
	else
	LIBADD_DL=${lt_cv_dlopen_libs}
	fi

	dnl FreeBSD needs -lcompat for ftime() used by lrmd.c
	AC_CHECK_LIB([compat], [ftime], [COMPAT_LIBS='-lcompat'])
	AC_SUBST(COMPAT_LIBS)

	dnl ========================================================================
	dnl Headers
	dnl ========================================================================

	dnl Some distributions insert #warnings into deprecated headers such as
	dnl timeb.h. If we will enable fatal warnings for the build, then enable
	dnl them for the header checks as well, otherwise the build could fail
	dnl even though the header check succeeds. (We should probably be doing
	dnl this in more places.)
	if test "x${enable_fatal_warnings}" = xyes ; then
	cc_temp_flags "$CFLAGS $WERROR"
	fi
	AC_CHECK_HEADERS(arpa/inet.h)
	AC_CHECK_HEADERS(ctype.h)
	AC_CHECK_HEADERS(dirent.h)
	AC_CHECK_HEADERS(errno.h)
	AC_CHECK_HEADERS(getopt.h)
	AC_CHECK_HEADERS(glib.h)
	AC_CHECK_HEADERS(grp.h)
	AC_CHECK_HEADERS(limits.h)
	AC_CHECK_HEADERS(linux/swab.h)
	AC_CHECK_HEADERS(malloc.h)
	AC_CHECK_HEADERS(netdb.h)
	AC_CHECK_HEADERS(netinet/in.h)
	AC_CHECK_HEADERS(netinet/ip.h)
	AC_CHECK_HEADERS(pwd.h)
	AC_CHECK_HEADERS(sgtty.h)
	AC_CHECK_HEADERS(signal.h)
	AC_CHECK_HEADERS(stdarg.h)
	AC_CHECK_HEADERS(stddef.h)
	AC_CHECK_HEADERS(stdio.h)
	AC_CHECK_HEADERS(stdlib.h)
	AC_CHECK_HEADERS(string.h)
	AC_CHECK_HEADERS(strings.h)
	AC_CHECK_HEADERS(sys/dir.h)
	AC_CHECK_HEADERS(sys/ioctl.h)
	AC_CHECK_HEADERS(sys/param.h)
	AC_CHECK_HEADERS(sys/reboot.h)
	AC_CHECK_HEADERS(sys/resource.h)
	AC_CHECK_HEADERS(sys/socket.h)
	AC_CHECK_HEADERS(sys/signalfd.h)
	AC_CHECK_HEADERS(sys/sockio.h)
	AC_CHECK_HEADERS(sys/stat.h)
	AC_CHECK_HEADERS(sys/time.h)
	AC_CHECK_HEADERS(sys/timeb.h)
	AC_CHECK_HEADERS(sys/types.h)
	AC_CHECK_HEADERS(sys/utsname.h)
	AC_CHECK_HEADERS(sys/wait.h)
	AC_CHECK_HEADERS(time.h)
	AC_CHECK_HEADERS(unistd.h)
	if test "x${enable_fatal_warnings}" = xyes ; then
	cc_restore_flags
	fi

	dnl These headers need prerequisites before the tests will pass
	dnl AC_CHECK_HEADERS(net/if.h)

	PKG_CHECK_MODULES(LIBXML2, [libxml-2.0],
	[CPPFLAGS="${CPPFLAGS} ${LIBXML2_CFLAGS}"
	LIBS="${LIBS} ${LIBXML2_LIBS}"])
	AC_CHECK_HEADERS(libxml/xpath.h)
	if test "$ac_cv_header_libxml_xpath_h" != "yes"; then
	AC_MSG_ERROR(libxml development headers not found)
	fi

	AC_CHECK_LIB(xslt, xsltApplyStylesheet, [],
	AC_MSG_ERROR(Unsupported libxslt library version))
	AC_CHECK_HEADERS(libxslt/xslt.h)
	if test "$ac_cv_header_libxslt_xslt_h" != "yes"; then
	AC_MSG_ERROR(libxslt development headers not found)
	fi

	AC_CACHE_CHECK(whether __progname and __progname_full are available,
	pf_cv_var_progname,
	AC_TRY_LINK([extern char __progname, __progname_full;],
	[__progname = "foo"; __progname_full = "foo bar";],
	pf_cv_var_progname="yes", pf_cv_var_progname="no"))

	if test "$pf_cv_var_progname" = "yes"; then
	AC_DEFINE(HAVE___PROGNAME,1,[ ])
	fi

	dnl ========================================================================
	dnl Structures
	dnl ========================================================================

	AC_CHECK_MEMBERS([struct tm.tm_gmtoff],,,[[#include <time.h>]])
	AC_CHECK_MEMBERS([lrm_op_t.rsc_deleted],,,[[#include <lrm/lrm_api.h>]])
	AC_CHECK_MEMBER([struct dirent.d_type],
	AC_DEFINE(HAVE_STRUCT_DIRENT_D_TYPE,1,[Define this if struct dirent has d_type]),,
	[#include <dirent.h>])

	dnl ========================================================================
	dnl Functions
	dnl ========================================================================

	AC_CHECK_FUNCS(getopt, AC_DEFINE(HAVE_DECL_GETOPT, 1, [Have getopt function]))
	AC_CHECK_FUNCS(nanosleep, AC_DEFINE(HAVE_DECL_NANOSLEEP, 1, [Have nanosleep function]))

	AC_CACHE_CHECK(whether sscanf supports %m,
	pf_cv_var_sscanf,
	AC_RUN_IFELSE([AC_LANG_SOURCE([[
	#include <stdio.h>
	const char *s = "some-command-line-arg";
	int main(int argc, char **argv) {
	char *name = NULL;
	int n = sscanf(s, "%ms", &name);
	return n == 1 ? 0 : 1;
	}
	]])],
	pf_cv_var_sscanf="yes", pf_cv_var_sscanf="no", pf_cv_var_sscanf="no"))

	if test "$pf_cv_var_sscanf" = "yes"; then
	AC_DEFINE(SSCANF_HAS_M, 1, [ ])
	fi

	dnl ========================================================================
	dnl bzip2
	dnl ========================================================================
	AC_CHECK_HEADERS(bzlib.h)
	AC_CHECK_LIB(bz2, BZ2_bzBuffToBuffCompress)

	if test x$ac_cv_lib_bz2_BZ2_bzBuffToBuffCompress != xyes ; then
	AC_MSG_ERROR(BZ2 libraries not found)
	fi

	if test x$ac_cv_header_bzlib_h != xyes; then
	AC_MSG_ERROR(BZ2 Development headers not found)
	fi

	dnl ========================================================================
	dnl sighandler_t is missing from Illumos, Solaris11 systems
	dnl ========================================================================

	AC_MSG_CHECKING([for sighandler_t])
	AC_TRY_COMPILE([#include <signal.h>],[sighandler_t *f;],
	has_sighandler_t=yes,has_sighandler_t=no)
	AC_MSG_RESULT($has_sighandler_t)
	if test "$has_sighandler_t" = "yes" ; then
	AC_DEFINE( HAVE_SIGHANDLER_T, 1, [Define if sighandler_t available] )
	fi

	dnl ========================================================================
	dnl ncurses
	dnl ========================================================================
	dnl
	dnl A few OSes (e.g. Linux) deliver a default "ncurses" alongside "curses".
	dnl Many non-Linux deliver "curses"; sites may add "ncurses".
	dnl
	dnl However, the source-code recommendation for both is to #include "curses.h"
	dnl (i.e. "ncurses" still wants the include to be simple, no-'n', "curses.h").
	dnl
	dnl ncurse takes precedence.
	dnl
	AC_CHECK_HEADERS(curses.h)
	AC_CHECK_HEADERS(curses/curses.h)
	AC_CHECK_HEADERS(ncurses.h)
	AC_CHECK_HEADERS(ncurses/ncurses.h)

	dnl Although n-library is preferred, only look for it if the n-header was found.
	CURSESLIBS=''
	PC_NAME_CURSES=""
	PC_LIBS_CURSES=""
	if test "$ac_cv_header_ncurses_h" = "yes"; then
	AC_CHECK_LIB(ncurses, printw,
	[AC_DEFINE(HAVE_LIBNCURSES,1, have ncurses library)])
	CURSESLIBS=`$PKG_CONFIG --libs ncurses` \|\| CURSESLIBS='-lncurses'
	PC_NAME_CURSES="ncurses"
	fi

	if test "$ac_cv_header_ncurses_ncurses_h" = "yes"; then
	AC_CHECK_LIB(ncurses, printw,
	[AC_DEFINE(HAVE_LIBNCURSES,1, have ncurses library)])
	CURSESLIBS=`$PKG_CONFIG --libs ncurses` \|\| CURSESLIBS='-lncurses'
	PC_NAME_CURSES="ncurses"
	fi

	dnl Only look for non-n-library if there was no n-library.
	if test X"$CURSESLIBS" = X"" -a "$ac_cv_header_curses_h" = "yes"; then
	AC_CHECK_LIB(curses, printw,
	[CURSESLIBS='-lcurses'; AC_DEFINE(HAVE_LIBCURSES,1, have curses library)])
	PC_LIBS_CURSES="$CURSESLIBS"
	fi

	dnl Only look for non-n-library if there was no n-library.
	if test X"$CURSESLIBS" = X"" -a "$ac_cv_header_curses_curses_h" = "yes"; then
	AC_CHECK_LIB(curses, printw,
	[CURSESLIBS='-lcurses'; AC_DEFINE(HAVE_LIBCURSES,1, have curses library)])
	PC_LIBS_CURSES="$CURSESLIBS"
	fi

	if test "x$CURSESLIBS" != "x"; then
	PCMK_FEATURES="$PCMK_FEATURES ncurses"
	fi

	dnl Check for printw() prototype compatibility
	if test X"$CURSESLIBS" != X"" && cc_supports_flag -Wcast-qual; then
	ac_save_LIBS=$LIBS
	LIBS="$CURSESLIBS"
	cc_temp_flags "-Wcast-qual $WERROR"
	# avoid broken test because of hardened build environment in Fedora 23+
	# - https://fedoraproject.org/wiki/Changes/Harden_All_Packages
	# - https://bugzilla.redhat.com/1297985
	if cc_supports_flag -fPIC; then
	CFLAGS="$CFLAGS -fPIC"
	fi

	AC_MSG_CHECKING(whether printw() requires argument of "const char *")
	AC_LINK_IFELSE(
	[AC_LANG_PROGRAM([
	#if defined(HAVE_NCURSES_H)
	# include <ncurses.h>
	#elif defined(HAVE_NCURSES_NCURSES_H)
	# include <ncurses/ncurses.h>
	#elif defined(HAVE_CURSES_H)
	# include <curses.h>
	#endif
	],
	[printw((const char *)"Test");]
	)],
	[pcmk_cv_compatible_printw=yes],
	[pcmk_cv_compatible_printw=no]
	)

	LIBS=$ac_save_LIBS
	cc_restore_flags

	AC_MSG_RESULT([$pcmk_cv_compatible_printw])

	if test "$pcmk_cv_compatible_printw" = no; then
	AC_MSG_WARN([The printw() function of your ncurses or curses library is old, we will disable usage of the library. If you want to use this library anyway, please update to newer version of the library, ncurses 5.4 or later is recommended. You can get the library from http://www.gnu.org/software/ncurses/.])
	AC_MSG_NOTICE([Disabling curses])
	AC_DEFINE(HAVE_INCOMPATIBLE_PRINTW, 1, [Do we have incompatible printw() in curses library?])
	fi
	fi

	AC_SUBST(CURSESLIBS)
	AC_SUBST(PC_NAME_CURSES)
	AC_SUBST(PC_LIBS_CURSES)

	dnl ========================================================================
	dnl Profiling and GProf
	dnl ========================================================================

	AC_MSG_NOTICE(Old CFLAGS: $CFLAGS)
	case $SUPPORT_COVERAGE in
	1\|yes\|true)
	SUPPORT_PROFILING=1
	PCMK_FEATURES="$PCMK_FEATURES coverage"
	CFLAGS="$CFLAGS -fprofile-arcs -ftest-coverage"
	dnl During linking, make sure to specify -lgcov or -coverage
	;;
	esac

	case $SUPPORT_PROFILING in
	1\|yes\|true)
	SUPPORT_PROFILING=1

	dnl Disable various compiler optimizations
	CFLAGS="$CFLAGS -fno-omit-frame-pointer -fno-inline -fno-builtin "
	dnl CFLAGS="$CFLAGS -fno-inline-functions -fno-default-inline -fno-inline-functions-called-once -fno-optimize-sibling-calls"

	dnl Turn off optimization so tools can get accurate line numbers
	CFLAGS=`echo $CFLAGS \| sed -e 's/-O.\ //g' -e 's/-Wp,-D_FORTIFY_SOURCE=.\ //g' -e 's/-D_FORTIFY_SOURCE=.\ //g'`
	CFLAGS="$CFLAGS -O0 -g3 -gdwarf-2"

	dnl Update features
	PCMK_FEATURES="$PCMK_FEATURES profile"
	;;
	*)
	SUPPORT_PROFILING=0
	;;
	esac
	AC_MSG_NOTICE(New CFLAGS: $CFLAGS)
	AC_DEFINE_UNQUOTED(SUPPORT_PROFILING, $SUPPORT_PROFILING, Support for profiling)

	dnl ========================================================================
	dnl Cluster infrastructure - LibQB
	dnl ========================================================================

	if test x${enable_no_stack} = xyes; then
	SUPPORT_CS=no
	fi

	PKG_CHECK_MODULES(libqb, libqb >= 0.13)
	CPPFLAGS="$libqb_CFLAGS $CPPFLAGS"
	LIBS="$libqb_LIBS $LIBS"

	dnl libqb 0.14.0+ (2012-06)
	AC_CHECK_LIB(qb, qb_ipcs_connection_auth_set)

	PCMK_FEATURES="$PCMK_FEATURES libqb-logging libqb-ipc"

	dnl libqb 0.17.0+ (2014-02)
	AC_CHECK_FUNCS(qb_ipcs_connection_get_buffer_size,
	AC_DEFINE(HAVE_IPCS_GET_BUFFER_SIZE, 1,
	[Have qb_ipcc_get_buffer_size function]))

	dnl libqb not yet released (as of 2018-05)
	CHECK_ENUM_VALUE([qb/qblog.h],[qb_log_conf],[QB_LOG_CONF_MAX_LINE_LEN])
	CHECK_ENUM_VALUE([qb/qblog.h],[qb_log_conf],[QB_LOG_CONF_ELLIPSIS])

	dnl Support Linux-HA fence agents if available
	if test "$cross_compiling" != "yes"; then
	CPPFLAGS="$CPPFLAGS -I${prefix}/include/heartbeat"
	fi
	AC_CHECK_HEADERS(stonith/stonith.h)
	if test "$ac_cv_header_stonith_stonith_h" = "yes"; then
	dnl On Debian, AC_CHECK_LIBS fail if a library has any unresolved symbols
	dnl So check for all the dependencies (so they're added to LIBS) before checking for -lplumb
	AC_CHECK_LIB(pils, PILLoadPlugin)
	AC_CHECK_LIB(plumb, G_main_add_IPC_Channel)
	PCMK_FEATURES="$PCMK_FEATURES lha-fencing"
	fi
	AM_CONDITIONAL([BUILD_LHA_SUPPORT], [test "$ac_cv_header_stonith_stonith_h" = "yes"])

	dnl ===============================================
	dnl Variables needed for substitution
	dnl ===============================================
	CRM_SCHEMA_DIRECTORY="${datadir}/pacemaker"
	AC_DEFINE_UNQUOTED(CRM_SCHEMA_DIRECTORY,"$CRM_SCHEMA_DIRECTORY", Location for the Pacemaker Relax-NG Schema)
	AC_SUBST(CRM_SCHEMA_DIRECTORY)

	CRM_CORE_DIR="${localstatedir}/lib/pacemaker/cores"
	AC_DEFINE_UNQUOTED(CRM_CORE_DIR,"$CRM_CORE_DIR", Location to store core files produced by Pacemaker daemons)
	AC_SUBST(CRM_CORE_DIR)

	if test x"${CRM_DAEMON_USER}" = x""; then
	CRM_DAEMON_USER="hacluster"
	fi
	AC_DEFINE_UNQUOTED(CRM_DAEMON_USER,"$CRM_DAEMON_USER", User to run Pacemaker daemons as)
	AC_SUBST(CRM_DAEMON_USER)

	if test x"${CRM_DAEMON_GROUP}" = x""; then
	CRM_DAEMON_GROUP="haclient"
	fi
	AC_DEFINE_UNQUOTED(CRM_DAEMON_GROUP,"$CRM_DAEMON_GROUP", Group to run Pacemaker daemons as)
	AC_SUBST(CRM_DAEMON_GROUP)

	CRM_STATE_DIR=${localstatedir}/run/crm
	AC_DEFINE_UNQUOTED(CRM_STATE_DIR,"$CRM_STATE_DIR", Where to keep state files and sockets)
	AC_SUBST(CRM_STATE_DIR)

	CRM_PACEMAKER_DIR=${localstatedir}/lib/pacemaker
	AC_DEFINE_UNQUOTED(CRM_PACEMAKER_DIR,"$CRM_PACEMAKER_DIR", Location to store directory produced by Pacemaker daemons)
	AC_SUBST(CRM_PACEMAKER_DIR)

	CRM_BLACKBOX_DIR=${localstatedir}/lib/pacemaker/blackbox
	AC_DEFINE_UNQUOTED(CRM_BLACKBOX_DIR,"$CRM_BLACKBOX_DIR", Where to keep blackbox dumps)
	AC_SUBST(CRM_BLACKBOX_DIR)

	PE_STATE_DIR="${localstatedir}/lib/pacemaker/pengine"
	AC_DEFINE_UNQUOTED(PE_STATE_DIR,"$PE_STATE_DIR", Where to keep scheduler outputs)
	AC_SUBST(PE_STATE_DIR)

	CRM_CONFIG_DIR="${localstatedir}/lib/pacemaker/cib"
	AC_DEFINE_UNQUOTED(CRM_CONFIG_DIR,"$CRM_CONFIG_DIR", Where to keep configuration files)
	AC_SUBST(CRM_CONFIG_DIR)

	CRM_CONFIG_CTS="${localstatedir}/lib/pacemaker/cts"
	AC_DEFINE_UNQUOTED(CRM_CONFIG_CTS,"$CRM_CONFIG_CTS", Where to keep cts stateful data)
	AC_SUBST(CRM_CONFIG_CTS)

	CRM_DAEMON_DIR="${libexecdir}/pacemaker"
	AC_DEFINE_UNQUOTED(CRM_DAEMON_DIR,"$CRM_DAEMON_DIR", Location for Pacemaker daemons)
	AC_SUBST(CRM_DAEMON_DIR)

	HA_STATE_DIR="${localstatedir}/run"
	AC_DEFINE_UNQUOTED(HA_STATE_DIR,"$HA_STATE_DIR", Where sbd keeps its PID file)
	AC_SUBST(HA_STATE_DIR)

	CRM_RSCTMP_DIR="${localstatedir}/run/resource-agents"
	AC_DEFINE_UNQUOTED(CRM_RSCTMP_DIR,"$CRM_RSCTMP_DIR", Where resource agents should keep state files)
	AC_SUBST(CRM_RSCTMP_DIR)

	PACEMAKER_CONFIG_DIR="${sysconfdir}/pacemaker"
	AC_DEFINE_UNQUOTED(PACEMAKER_CONFIG_DIR,"$PACEMAKER_CONFIG_DIR", Where to keep configuration files like authkey)
	AC_SUBST(PACEMAKER_CONFIG_DIR)

	OCF_ROOT_DIR="/usr/lib/ocf"
	if test "X$OCF_ROOT_DIR" = X; then
	AC_MSG_ERROR(Could not locate OCF directory)
	fi
	AC_SUBST(OCF_ROOT_DIR)

	OCF_RA_DIR="$OCF_ROOT_DIR/resource.d"
	AC_DEFINE_UNQUOTED(OCF_RA_DIR,"$OCF_RA_DIR", Location for OCF RAs)
	AC_SUBST(OCF_RA_DIR)

	RH_STONITH_DIR="$sbindir"
	AC_DEFINE_UNQUOTED(RH_STONITH_DIR,"$RH_STONITH_DIR", Location for Red Hat Stonith agents)
	AC_DEFINE_UNQUOTED(SBIN_DIR,"$sbindir", Location for system binaries)

	RH_STONITH_PREFIX="fence_"
	AC_DEFINE_UNQUOTED(RH_STONITH_PREFIX,"$RH_STONITH_PREFIX", Prefix for Red Hat Stonith agents)

	AC_PATH_PROGS(GIT, git false)
	AC_MSG_CHECKING(build version)

	BUILD_VERSION=$Format:%h$
	if test $BUILD_VERSION != ":%h$"; then
	AC_MSG_RESULT(archive hash: $BUILD_VERSION)
	elif test -x $GIT -a -d .git; then
	BUILD_VERSION=`$GIT log --pretty="format:%h" -n 1`
	AC_MSG_RESULT(git hash: $BUILD_VERSION)
	else
	# The current directory name make a reasonable default
	# Most generated archives will include the hash or tag
	BASE=`basename $PWD`
	BUILD_VERSION=`echo $BASE \| sed s:.*[[Pp]]acemaker-::`
	AC_MSG_RESULT(directory based hash: $BUILD_VERSION)
	fi

	AC_DEFINE_UNQUOTED(BUILD_VERSION, "$BUILD_VERSION", Build version)
	AC_SUBST(BUILD_VERSION)

	HAVE_dbus=1
	PKG_CHECK_MODULES([DBUS], [dbus-1],
	[CPPFLAGS="${CPPFLAGS} ${DBUS_CFLAGS}"],
	[HAVE_dbus=0])
	AC_DEFINE_UNQUOTED(SUPPORT_DBUS, $HAVE_dbus, Support dbus)
	AM_CONDITIONAL(BUILD_DBUS, test $HAVE_dbus = 1)
	AC_CHECK_TYPES([DBusBasicValue],,,[[#include <dbus/dbus.h>]])
	if test $HAVE_dbus = 0; then
	PC_NAME_DBUS=""
	else
	PC_NAME_DBUS="dbus-1"
	fi
	AC_SUBST(PC_NAME_DBUS)

	if test "x${enable_systemd}" != xno; then
	if test $HAVE_dbus = 0; then
	if test "x${enable_systemd}" = xyes; then
	AC_MSG_FAILURE([cannot enable systemd without DBus])
	else
	enable_systemd=no
	fi
	fi
	if test "x${enable_systemd}" = xtry; then
	AC_MSG_CHECKING([for systemd version query result via dbus-send])
	ret=$({ dbus-send --system --print-reply \
	--dest=org.freedesktop.systemd1 \
	/org/freedesktop/systemd1 \
	org.freedesktop.DBus.Properties.Get \
	string:org.freedesktop.systemd1.Manager \
	string:Version 2>/dev/null \
	\|\| echo "this borked"; } \| tail -n1)
	# sanitize output a bit (interested just in value, not type),
	# ret is intentionally unenquoted so as to normalize whitespace
	ret=$(echo ${ret} \| cut -d' ' -f2-)
	AC_MSG_RESULT([${ret}])
	if test "x${ret}" != xborked \
	\|\| systemctl --version 2>/dev/null \| grep -q systemd; then
	enable_systemd=yes
	else
	enable_systemd=no
	fi
	fi
	fi

	AC_MSG_CHECKING([whether to enable support for managing resources via systemd])
	AC_MSG_RESULT([${enable_systemd}])
	HAVE_systemd=0
	if test "x${enable_systemd}" = xyes; then
	HAVE_systemd=1
	PCMK_FEATURES="$PCMK_FEATURES systemd"

	AC_MSG_CHECKING([for systemd path for system unit files])
	systemdunitdir="${systemdunitdir-}"
	PKG_CHECK_VAR([systemdunitdir], [systemd],
	[systemdsystemunitdir], [], [systemdunitdir=no])
	AC_MSG_RESULT([${systemdunitdir}])
	if test "x${systemdunitdir}" = xno; then
	AC_MSG_FAILURE([cannot enable systemd when systemdunitdir unresolved])
	fi
	fi
	AC_SUBST(systemdunitdir)

	AC_DEFINE_UNQUOTED(SUPPORT_SYSTEMD, $HAVE_systemd, Support systemd based system services)
	AM_CONDITIONAL(BUILD_SYSTEMD, test $HAVE_systemd = 1)
	AC_SUBST(SUPPORT_SYSTEMD)

	if test "x${enable_upstart}" != xno; then
	if test $HAVE_dbus = 0; then
	if test "x${enable_upstart}" = xyes; then
	AC_MSG_FAILURE([cannot enable Upstart without DBus])
	else
	enable_upstart=no
	fi
	fi
	if test "x${enable_upstart}" = xtry; then
	AC_MSG_CHECKING([for Upstart version query result via dbus-send])
	ret=$({ dbus-send --system --print-reply --dest=com.ubuntu.Upstart \
	/com/ubuntu/Upstart org.freedesktop.DBus.Properties.Get \
	string:com.ubuntu.Upstart0_6 string:version 2>/dev/null \
	\|\| echo "this borked"; } \| tail -n1)
	# sanitize output a bit (interested just in value, not type),
	# ret is intentionally unenquoted so as to normalize whitespace
	ret=$(echo ${ret} \| cut -d' ' -f2-)
	AC_MSG_RESULT([${ret}])
	if test "x${ret}" != xborked \
	\|\| initctl --version 2>/dev/null \| grep -q upstart; then
	enable_upstart=yes
	else
	enable_upstart=no
	fi
	fi
	fi
	AC_MSG_CHECKING([whether to enable support for managing resources via Upstart])
	AC_MSG_RESULT([${enable_upstart}])
	HAVE_upstart=0
	if test "x${enable_upstart}" = xyes; then
	HAVE_upstart=1
	PCMK_FEATURES="$PCMK_FEATURES upstart"
	fi

	AC_DEFINE_UNQUOTED(SUPPORT_UPSTART, $HAVE_upstart, Support upstart based system services)
	AM_CONDITIONAL(BUILD_UPSTART, test $HAVE_upstart = 1)
	AC_SUBST(SUPPORT_UPSTART)

	case $SUPPORT_NAGIOS in
	1\|yes\|true\|try)
	SUPPORT_NAGIOS=1
	;;
	*)
	SUPPORT_NAGIOS=0
	;;
	esac

	if test $SUPPORT_NAGIOS = 1; then
	PCMK_FEATURES="$PCMK_FEATURES nagios"
	fi

	AC_DEFINE_UNQUOTED(SUPPORT_NAGIOS, $SUPPORT_NAGIOS, Support nagios plugins)
	AM_CONDITIONAL(BUILD_NAGIOS, test $SUPPORT_NAGIOS = 1)

	if test x"$NAGIOS_PLUGIN_DIR" = x""; then
	NAGIOS_PLUGIN_DIR="${libexecdir}/nagios/plugins"
	fi

	AC_DEFINE_UNQUOTED(NAGIOS_PLUGIN_DIR, "$NAGIOS_PLUGIN_DIR", Directory for nagios plugins)
	AC_SUBST(NAGIOS_PLUGIN_DIR)

	if test x"$NAGIOS_METADATA_DIR" = x""; then
	NAGIOS_METADATA_DIR="${datadir}/nagios/plugins-metadata"
	fi

	AC_DEFINE_UNQUOTED(NAGIOS_METADATA_DIR, "$NAGIOS_METADATA_DIR", Directory for nagios plugins metadata)
	AC_SUBST(NAGIOS_METADATA_DIR)

	STACKS=""
	CLUSTERLIBS=""
	PC_NAME_CLUSTER=""

	dnl ========================================================================
	dnl Cluster stack - Corosync
	dnl ========================================================================

	dnl Normalize the values
	case $SUPPORT_CS in
	1\|yes\|true)
	SUPPORT_CS=yes
	missingisfatal=1
	;;
	try)
	missingisfatal=0
	;;
	*)
	SUPPORT_CS=no
	;;
	esac

	AC_MSG_CHECKING(for native corosync)
	COROSYNC_LIBS=""

	if test $SUPPORT_CS = no; then
	AC_MSG_RESULT(no (disabled))
	SUPPORT_CS=0
	else
	AC_MSG_RESULT($SUPPORT_CS)
	SUPPORT_CS=1
	PKG_CHECK_MODULES(cpg, libcpg) dnl Fatal
	PKG_CHECK_MODULES(cfg, libcfg) dnl Fatal
	PKG_CHECK_MODULES(cmap, libcmap) dnl Fatal
	PKG_CHECK_MODULES(quorum, libquorum) dnl Fatal
	PKG_CHECK_MODULES(libcorosync_common, libcorosync_common) dnl Fatal

	CFLAGS="$CFLAGS $libqb_FLAGS $cpg_FLAGS $cfg_FLAGS $cmap_CFLAGS $quorum_CFLAGS $libcorosync_common_CFLAGS"
	COROSYNC_LIBS="$COROSYNC_LIBS $libqb_LIBS $cpg_LIBS $cfg_LIBS $cmap_LIBS $quorum_LIBS $libcorosync_common_LIBS"
	CLUSTERLIBS="$CLUSTERLIBS $COROSYNC_LIBS"
	PC_NAME_CLUSTER="$PC_CLUSTER_NAME libcfg libcmap libcorosync_common libcpg libquorum"
	STACKS="$STACKS corosync-native"
	fi

	AC_DEFINE_UNQUOTED(SUPPORT_COROSYNC, $SUPPORT_CS, Support the Corosync messaging and membership layer)
	AM_CONDITIONAL(BUILD_CS_SUPPORT, test $SUPPORT_CS = 1)
	AC_SUBST(SUPPORT_COROSYNC)

	dnl
	dnl Cluster stack - Sanity
	dnl

	if test x${enable_no_stack} = xyes; then
	AC_MSG_NOTICE(No cluster stack supported, building only the scheduler)
	PCMK_FEATURES="$PCMK_FEATURES no-cluster-stack"
	else
	AC_MSG_CHECKING(for supported stacks)
	if test x"$STACKS" = x; then
	AC_MSG_FAILURE(You must support at least one cluster stack)
	fi
	AC_MSG_RESULT($STACKS)
	PCMK_FEATURES="$PCMK_FEATURES $STACKS"
	fi

	PCMK_FEATURES="$PCMK_FEATURES atomic-attrd"
	AC_SUBST(CLUSTERLIBS)
	AC_SUBST(PC_NAME_CLUSTER)

	dnl ========================================================================
	dnl ACL
	dnl ========================================================================

	case $SUPPORT_ACL in
	1\|yes\|true)
	missingisfatal=1
	;;
	try)
	missingisfatal=0
	;;
	*)
	SUPPORT_ACL=no
	;;
	esac

	AC_MSG_CHECKING(for acl support)
	if test $SUPPORT_ACL = no; then
	AC_MSG_RESULT(no (disabled))
	SUPPORT_ACL=0
	else
	AC_MSG_RESULT($SUPPORT_ACL)

	SUPPORT_ACL=1
	AC_CHECK_LIB(qb, qb_ipcs_connection_auth_set)
	if test $ac_cv_lib_qb_qb_ipcs_connection_auth_set != yes; then
	SUPPORT_ACL=0
	fi

	if test $SUPPORT_ACL = 0; then
	if test $missingisfatal = 0; then
	AC_MSG_WARN(Unable to support ACL. You need to use libqb > 0.13.0)
	else
	AC_MSG_FAILURE(Unable to support ACL. You need to use libqb > 0.13.0)
	fi
	fi
	fi

	if test $SUPPORT_ACL = 1; then
	PCMK_FEATURES="$PCMK_FEATURES acls"
	fi

	AM_CONDITIONAL(ENABLE_ACL, test "$SUPPORT_ACL" = "1")
	AC_DEFINE_UNQUOTED(ENABLE_ACL, $SUPPORT_ACL, Build in support for CIB ACL)

	dnl ========================================================================
	dnl CIB secrets
	dnl ========================================================================

	case $SUPPORT_CIBSECRETS in
	1\|yes\|true\|try)
	SUPPORT_CIBSECRETS=1
	;;
	*)
	SUPPORT_CIBSECRETS=0
	;;
	esac

	AC_DEFINE_UNQUOTED(SUPPORT_CIBSECRETS, $SUPPORT_CIBSECRETS, Support CIB secrets)
	AM_CONDITIONAL(BUILD_CIBSECRETS, test $SUPPORT_CIBSECRETS = 1)

	if test $SUPPORT_CIBSECRETS = 1; then
	PCMK_FEATURES="$PCMK_FEATURES cibsecrets"

	LRM_CIBSECRETS_DIR="${localstatedir}/lib/pacemaker/lrm/secrets"
	AC_DEFINE_UNQUOTED(LRM_CIBSECRETS_DIR,"$LRM_CIBSECRETS_DIR", Location for CIB secrets)
	AC_SUBST(LRM_CIBSECRETS_DIR)
	fi

	dnl ========================================================================
	dnl GnuTLS
	dnl ========================================================================

	dnl gnutls_priority_set_direct available since 2.1.7 (released 2007-11-29)
	AC_CHECK_LIB(gnutls, gnutls_priority_set_direct)
	if test "$ac_cv_lib_gnutls_gnutls_priority_set_direct" != ""; then
	AC_CHECK_HEADERS(gnutls/gnutls.h)
	AC_CHECK_FUNCS([gnutls_sec_param_to_pk_bits]) dnl since 2.12.0 (2011-03-24)
	if test "$ac_cv_header_gnutls_gnutls_h" != "yes"; then
	PC_NAME_GNUTLS=""
	else
	PC_NAME_GNUTLS="gnutls"
	fi
	AC_SUBST(PC_NAME_GNUTLS)
	fi

	dnl ========================================================================
	dnl PAM
	dnl ========================================================================

	AC_CHECK_HEADERS(security/pam_appl.h pam/pam_appl.h)

	dnl ========================================================================
	dnl System Health
	dnl ========================================================================

	dnl Check if servicelog development package is installed
	SERVICELOG=servicelog-1
	SERVICELOG_EXISTS="no"
	AC_MSG_CHECKING(for $SERVICELOG packages)
	if
	$PKG_CONFIG --exists $SERVICELOG
	then
	PKG_CHECK_MODULES([SERVICELOG], [servicelog-1])
	SERVICELOG_EXISTS="yes"
	fi
	AC_MSG_RESULT($SERVICELOG_EXISTS)
	AM_CONDITIONAL(BUILD_SERVICELOG, test "$SERVICELOG_EXISTS" = "yes")

	dnl Check if OpenIMPI packages and servicelog are installed
	OPENIPMI="OpenIPMI OpenIPMIposix"
	OPENIPMI_SERVICELOG_EXISTS="no"
	AC_MSG_CHECKING(for $SERVICELOG $OPENIPMI packages)
	if
	$PKG_CONFIG --exists $OPENIPMI $SERVICELOG
	then
	PKG_CHECK_MODULES([OPENIPMI_SERVICELOG],[OpenIPMI OpenIPMIposix])
	OPENIPMI_SERVICELOG_EXISTS="yes"
	fi
	AC_MSG_RESULT($OPENIPMI_SERVICELOG_EXISTS)
	AM_CONDITIONAL(BUILD_OPENIPMI_SERVICELOG, test "$OPENIPMI_SERVICELOG_EXISTS" = "yes")

	dnl ========================================================================
	dnl Compiler flags
	dnl ========================================================================

	dnl Make sure that CFLAGS is not exported. If the user did
	dnl not have CFLAGS in their environment then this should have
	dnl no effect. However if CFLAGS was exported from the user's
	dnl environment, then the new CFLAGS will also be exported
	dnl to sub processes.
	if export \| fgrep " CFLAGS=" > /dev/null; then
	SAVED_CFLAGS="$CFLAGS"
	unset CFLAGS
	CFLAGS="$SAVED_CFLAGS"
	unset SAVED_CFLAGS
	fi

	AC_ARG_VAR([CFLAGS_HARDENED_LIB], [extra C compiler flags for hardened libraries])
	AC_ARG_VAR([LDFLAGS_HARDENED_LIB], [extra linker flags for hardened libraries])

	AC_ARG_VAR([CFLAGS_HARDENED_EXE], [extra C compiler flags for hardened executables])
	AC_ARG_VAR([LDFLAGS_HARDENED_EXE], [extra linker flags for hardened executables])

	CC_EXTRAS=""

	if test "$GCC" != yes; then
	CFLAGS="$CFLAGS -g"
	else
	CFLAGS="$CFLAGS -ggdb"

	dnl When we don't have diagnostic push / pull, we can't explicitly disable
	dnl checking for nonliteral formats in the places where they occur on purpose
	dnl thus we disable nonliteral format checking globally as we are aborting
	dnl on warnings.
	dnl what makes the things really ugly is that nonliteral format checking is
	dnl obviously available as an extra switch in very modern gcc but for older
	dnl gcc this is part of -Wformat=2
	dnl so if we have push/pull we can enable -Wformat=2 -Wformat-nonliteral
	dnl if we don't have push/pull but -Wformat-nonliteral we can enable -Wformat=2
	dnl otherwise none of both

	gcc_diagnostic_push_pull=no
	cc_temp_flags "$CFLAGS $WERROR"
	AC_MSG_CHECKING([for gcc diagnostic push / pull])
	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
	#pragma GCC diagnostic push
	#pragma GCC diagnostic pop
	]])],
	[
	AC_MSG_RESULT([yes])
	gcc_diagnostic_push_pull=yes
	], AC_MSG_RESULT([no]))
	cc_restore_flags

	if cc_supports_flag "-Wformat-nonliteral"; then
	gcc_format_nonliteral=yes
	else
	gcc_format_nonliteral=no
	fi

	# We had to eliminate -Wnested-externs because of libtool changes
	# Make sure to order options so that the former stand for prerequisites
	# of the latter (e.g., -Wformat-nonliteral requires -Wformat).
	EXTRA_FLAGS="-fgnu89-inline
	-Wall
	-Waggregate-return
	-Wbad-function-cast
	-Wcast-align
	-Wdeclaration-after-statement
	-Wendif-labels
	-Wfloat-equal
	-Wformat-security
	-Wmissing-prototypes
	-Wmissing-declarations
	-Wnested-externs
	-Wno-long-long
	-Wno-strict-aliasing
	-Wpointer-arith
	-Wstrict-prototypes
	-Wwrite-strings
	-Wunused-but-set-variable
	-Wunsigned-char"

	if test "x$gcc_diagnostic_push_pull" = "xyes"; then
	AC_DEFINE([GCC_FORMAT_NONLITERAL_CHECKING_ENABLED], [],
	[gcc can complain about nonliterals in format])
	EXTRA_FLAGS="$EXTRA_FLAGS
	-Wformat=2
	-Wformat-nonliteral"
	else
	if test "x$gcc_format_nonliteral" = "xyes"; then
	EXTRA_FLAGS="$EXTRA_FLAGS -Wformat=2"
	fi
	fi

	# Additional warnings it might be nice to enable one day
	# -Wshadow
	# -Wunreachable-code
	for j in $EXTRA_FLAGS
	do
	if
	cc_supports_flag $CC_EXTRAS $j
	then
	CC_EXTRAS="$CC_EXTRAS $j"
	fi
	done

	if test "x${enable_ansi}" = xyes && cc_supports_flag -std=iso9899:199409 ; then
	AC_MSG_NOTICE(Enabling ANSI Compatibility)
	CC_EXTRAS="$CC_EXTRAS -ansi -D_GNU_SOURCE -DANSI_ONLY"
	fi

	AC_MSG_NOTICE(Activated additional gcc flags: ${CC_EXTRAS})
	fi

	dnl
	dnl Hardening flags
	dnl
	dnl The prime control of whether to apply (targeted) hardening build flags and
	dnl which ones is --{enable,disable}-hardening option passed to ./configure:
	dnl
	dnl --enable-hardening=try (default):
	dnl depending on whether any of CFLAGS_HARDENED_EXE, LDFLAGS_HARDENED_EXE,
	dnl CFLAGS_HARDENED_LIB or LDFLAGS_HARDENED_LIB environment variables
	dnl (see below) is set and non-null, all these custom flags (even if not
	dnl set) are used as are, otherwise the best effort is made to offer
	dnl reasonably strong hardening in several categories (RELRO, PIE,
	dnl "bind now", stack protector) according to what the selected toolchain
	dnl can offer
	dnl
	dnl --enable-hardening:
	dnl same effect as --enable-hardening=try when the environment variables
	dnl in question are suppressed
	dnl
	dnl --disable-hardening:
	dnl do not apply any targeted hardening measures at all
	dnl
	dnl The user-injected environment variables that regulate the hardening in
	dnl default case are as follows:
	dnl
	dnl * CFLAGS_HARDENED_EXE, LDFLAGS_HARDENED_EXE
	dnl compiler and linker flags (respectively) for daemon programs
	dnl (pacemakerd, pacemaker-attrd, pacemaker-controld, pacemaker-execd,
	dnl cib, stonithd, pacemaker-remoted, pacemaker-schedulerd)
	dnl
	dnl * CFLAGS_HARDENED_LIB, LDFLAGS_HARDENED_LIB
	dnl compiler and linker flags (respectively) for libraries linked
	dnl with the daemon programs
	dnl
	dnl Note that these are purposedly targeted variables (addressing particular
	dnl targets all over the scattered Makefiles) and have no effect outside of
	dnl the predestined scope (e.g., CLI utilities). For a global reach,
	dnl use CFLAGS, LDFLAGS, etc. as usual.
	dnl
	dnl For guidance on the suitable flags consult, for instance:
	dnl https://fedoraproject.org/wiki/Changes/Harden_All_Packages#Detailed_Harden_Flags_Description
	dnl https://owasp.org/index.php/C-Based_Toolchain_Hardening#GCC.2FBinutils
	dnl

	if test "x${HARDENING}" != "xtry"; then
	unset CFLAGS_HARDENED_EXE
	unset CFLAGS_HARDENED_LIB
	unset LDFLAGS_HARDENED_EXE
	unset LDFLAGS_HARDENED_LIB
	fi
	if test "x${HARDENING}" = "xno"; then
	AC_MSG_NOTICE([Hardening: explicitly disabled])
	elif test "x${HARDENING}" = "xyes" \
	\|\| test "$(env \| grep -Ec '^(C\|LD)FLAGS_HARDENED_(EXE\|LIB)=.')" = 0; then
	dnl We'll figure out on our own...
	CFLAGS_HARDENED_EXE=
	CFLAGS_HARDENED_LIB=
	LDFLAGS_HARDENED_EXE=
	LDFLAGS_HARDENED_LIB=
	relro=0
	pie=0
	bindnow=0
	# daemons incl. libs: partial RELRO
	flag="-Wl,-z,relro"
	CC_CHECK_LDFLAGS(["${flag}"],
	[LDFLAGS_HARDENED_EXE="${LDFLAGS_HARDENED_EXE} ${flag}";
	LDFLAGS_HARDENED_LIB="${LDFLAGS_HARDENED_LIB} ${flag}";
	relro=1])
	# daemons: PIE for both CFLAGS and LDFLAGS
	if cc_supports_flag -fPIE; then
	flag="-pie"
	CC_CHECK_LDFLAGS(["${flag}"],
	[CFLAGS_HARDENED_EXE="${CFLAGS_HARDENED_EXE} -fPIE";
	LDFLAGS_HARDENED_EXE="${LDFLAGS_HARDENED_EXE} ${flag}";
	pie=1])
	fi
	# daemons incl. libs: full RELRO if sensible + as-needed linking
	# so as to possibly mitigate startup performance
	# hit caused by excessive linking with unneeded
	# libraries
	if test "${relro}" = 1 && test "${pie}" = 1; then
	flag="-Wl,-z,now"
	CC_CHECK_LDFLAGS(["${flag}"],
	[LDFLAGS_HARDENED_EXE="${LDFLAGS_HARDENED_EXE} ${flag}";
	LDFLAGS_HARDENED_LIB="${LDFLAGS_HARDENED_LIB} ${flag}";
	bindnow=1])
	fi
	if test "${bindnow}" = 1; then
	flag="-Wl,--as-needed"
	CC_CHECK_LDFLAGS(["${flag}"],
	[LDFLAGS_HARDENED_EXE="${LDFLAGS_HARDENED_EXE} ${flag}";
	LDFLAGS_HARDENED_LIB="${LDFLAGS_HARDENED_LIB} ${flag}"])
	fi
	# universal: prefer strong > all > default stack protector if possible
	flag=
	if cc_supports_flag -fstack-protector-strong; then
	flag="-fstack-protector-strong"
	elif cc_supports_flag -fstack-protector-all; then
	flag="-fstack-protector-all"
	elif cc_supports_flag -fstack-protector; then
	flag="-fstack-protector"
	fi
	if test -n "${flag}"; then
	CC_EXTRAS="${CC_EXTRAS} ${flag}"
	stackprot=1
	fi
	if test "${relro}" = 1 \
	\|\| test "${pie}" = 1 \
	\|\| test "${stackprot}" = 1; then
	AC_MSG_NOTICE([Hardening: relro=${relro} pie=${pie} bindnow=${bindnow} stackprot=${flag}])
	else
	AC_MSG_WARN([Hardening: no suitable features in the toolchain detected])
	fi
	else
	AC_MSG_NOTICE([Hardening: using custom flags])
	fi

	CFLAGS="$CFLAGS $CC_EXTRAS"

	NON_FATAL_CFLAGS="$CFLAGS"
	AC_SUBST(NON_FATAL_CFLAGS)

	dnl
	dnl We reset CFLAGS to include our warnings after all function
	dnl checking goes on, so that our warning flags don't keep the
	dnl AC_*FUNCS() calls above from working. In particular, -Werror will
	dnl always cause us troubles if we set it before here.
	dnl
	dnl
	if test "x${enable_fatal_warnings}" = xyes ; then
	AC_MSG_NOTICE(Enabling Fatal Warnings)
	CFLAGS="$CFLAGS $WERROR"
	fi
	AC_SUBST(CFLAGS)

	dnl This is useful for use in Makefiles that need to remove one specific flag
	CFLAGS_COPY="$CFLAGS"
	AC_SUBST(CFLAGS_COPY)

	AC_SUBST(LIBADD_DL) dnl extra flags for dynamic linking libraries
	AC_SUBST(LIBADD_INTL) dnl extra flags for GNU gettext stuff...

	AC_SUBST(LOCALE)

	dnl Options for cleaning up the compiler output
	QUIET_LIBTOOL_OPTS=""
	QUIET_MAKE_OPTS=""
	if test "x${enable_quiet}" = "xyes"; then
	QUIET_LIBTOOL_OPTS="--silent"
	QUIET_MAKE_OPTS="-s" # POSIX compliant
	fi

	AC_MSG_RESULT(Suppress make details: ${enable_quiet})

	dnl Put the above variables to use
	LIBTOOL="${LIBTOOL} --tag=CC \$(QUIET_LIBTOOL_OPTS)"
	MAKEFLAGS="${MAKEFLAGS} ${QUIET_MAKE_OPTS}"

	AC_SUBST(CC)
	AC_SUBST(MAKEFLAGS)
	AC_SUBST(LIBTOOL)
	AC_SUBST(QUIET_LIBTOOL_OPTS)
	AC_DEFINE_UNQUOTED(CRM_FEATURES, "$PCMK_FEATURES", Set of enabled features)
	AC_SUBST(PCMK_FEATURES)

	dnl Files we output that need to be executable
	AC_CONFIG_FILES([cts/CTSlab.py], [chmod +x cts/CTSlab.py])
	AC_CONFIG_FILES([cts/LSBDummy], [chmod +x cts/LSBDummy])
	AC_CONFIG_FILES([cts/OCFIPraTest.py], [chmod +x cts/OCFIPraTest.py])
	AC_CONFIG_FILES([cts/cluster_test], [chmod +x cts/cluster_test])
	AC_CONFIG_FILES([cts/cts], [chmod +x cts/cts])
	AC_CONFIG_FILES([cts/cts-cli], [chmod +x cts/cts-cli])
	AC_CONFIG_FILES([cts/cts-coverage], [chmod +x cts/cts-coverage])
	AC_CONFIG_FILES([cts/cts-exec], [chmod +x cts/cts-exec])
	AC_CONFIG_FILES([cts/cts-fencing], [chmod +x cts/cts-fencing])
	AC_CONFIG_FILES([cts/cts-log-watcher], [chmod +x cts/cts-log-watcher])
	AC_CONFIG_FILES([cts/cts-regression], [chmod +x cts/cts-regression])
	AC_CONFIG_FILES([cts/cts-scheduler], [chmod +x cts/cts-scheduler])
	AC_CONFIG_FILES([cts/cts-support], [chmod +x cts/cts-support])
	AC_CONFIG_FILES([cts/lxc_autogen.sh], [chmod +x cts/lxc_autogen.sh])
	AC_CONFIG_FILES([cts/benchmark/clubench], [chmod +x cts/benchmark/clubench])
	AC_CONFIG_FILES([cts/fence_dummy], [chmod +x cts/fence_dummy])
	AC_CONFIG_FILES([cts/pacemaker-cts-dummyd], [chmod +x cts/pacemaker-cts-dummyd])
	AC_CONFIG_FILES([daemons/fenced/fence_legacy], [chmod +x daemons/fenced/fence_legacy])
	AC_CONFIG_FILES([doc/abi-check], [chmod +x doc/abi-check])
	AC_CONFIG_FILES([extra/resources/ClusterMon], [chmod +x extra/resources/ClusterMon])
	AC_CONFIG_FILES([extra/resources/HealthSMART], [chmod +x extra/resources/HealthSMART])
	AC_CONFIG_FILES([extra/resources/SysInfo], [chmod +x extra/resources/SysInfo])
	AC_CONFIG_FILES([extra/resources/ifspeed], [chmod +x extra/resources/ifspeed])
	AC_CONFIG_FILES([extra/resources/o2cb], [chmod +x extra/resources/o2cb])
	AC_CONFIG_FILES([tools/crm_failcount], [chmod +x tools/crm_failcount])
	AC_CONFIG_FILES([tools/crm_master], [chmod +x tools/crm_master])
	AC_CONFIG_FILES([tools/crm_report], [chmod +x tools/crm_report])
	AC_CONFIG_FILES([tools/crm_standby], [chmod +x tools/crm_standby])
	AC_CONFIG_FILES([tools/cibsecret], [chmod +x tools/cibsecret])

	dnl Other files we output
	AC_CONFIG_FILES(Makefile \
	cts/Makefile \
	cts/CTS.py \
	cts/CTSvars.py \
	cts/benchmark/Makefile \
	cts/pacemaker-cts-dummyd@.service \
	daemons/Makefile \
	daemons/attrd/Makefile \
	daemons/based/Makefile \
	daemons/controld/Makefile \
	daemons/execd/Makefile \
	daemons/execd/pacemaker_remote \
	daemons/execd/pacemaker_remote.service \
	daemons/fenced/Makefile \
	daemons/pacemakerd/Makefile \
	daemons/pacemakerd/pacemaker \
	daemons/pacemakerd/pacemaker.service \
	daemons/pacemakerd/pacemaker.upstart \
	daemons/pacemakerd/pacemaker.combined.upstart \
	daemons/schedulerd/Makefile \
	doc/Doxyfile \
	doc/Makefile \
	doc/Clusters_from_Scratch/publican.cfg \
	doc/Pacemaker_Administration/publican.cfg \
	doc/Pacemaker_Development/publican.cfg \
	doc/Pacemaker_Explained/publican.cfg \
	doc/Pacemaker_Remote/publican.cfg \
	extra/Makefile \
	extra/alerts/Makefile \
	extra/resources/Makefile \
	extra/logrotate/Makefile \
	extra/logrotate/pacemaker \
	include/Makefile \
	include/crm/Makefile \
	include/crm/cib/Makefile \
	include/crm/common/Makefile \
	include/crm/cluster/Makefile \
	include/crm/fencing/Makefile \
	include/crm/pengine/Makefile \
	include/pcmki/Makefile \
	replace/Makefile \
	lib/Makefile \
	lib/libpacemaker.pc \
	lib/pacemaker.pc \
	lib/pacemaker-cib.pc \
	lib/pacemaker-lrmd.pc \
	lib/pacemaker-service.pc \
	lib/pacemaker-pe_rules.pc \
	lib/pacemaker-pe_status.pc \
	lib/pacemaker-fencing.pc \
	lib/pacemaker-cluster.pc \
	lib/common/Makefile \
	lib/cluster/Makefile \
	lib/cib/Makefile \
	lib/gnu/Makefile \
	lib/pacemaker/Makefile \
	lib/pengine/Makefile \
	lib/fencing/Makefile \
	lib/lrmd/Makefile \
	lib/services/Makefile \
	maint/Makefile \
	tools/Makefile \
	tools/report.collector \
	tools/report.common \
	tools/crm_mon.service \
	tools/crm_mon.upstart \
	xml/Makefile \
	xml/pacemaker-schemas.pc \
	)

	dnl Now process the entire list of files added by previous
	dnl calls to AC_CONFIG_FILES()
	AC_OUTPUT()

	dnl *****************
	dnl Configure summary
	dnl *****************

	AC_MSG_RESULT([])
	AC_MSG_RESULT([$PACKAGE configuration:])
	AC_MSG_RESULT([ Version = ${VERSION} (Build: $BUILD_VERSION)])
	AC_MSG_RESULT([ Features =${PCMK_FEATURES}])
	AC_MSG_RESULT([])
	AC_MSG_RESULT([ Prefix = ${prefix}])
	AC_MSG_RESULT([ Executables = ${sbindir}])
	AC_MSG_RESULT([ Man pages = ${mandir}])
	AC_MSG_RESULT([ Libraries = ${libdir}])
	AC_MSG_RESULT([ Header files = ${includedir}])
	AC_MSG_RESULT([ Arch-independent files = ${datadir}])
	AC_MSG_RESULT([ State information = ${localstatedir}])
	AC_MSG_RESULT([ System configuration = ${sysconfdir}])
	AC_MSG_RESULT([])
	AC_MSG_RESULT([ HA group name = ${CRM_DAEMON_GROUP}])
	AC_MSG_RESULT([ HA user name = ${CRM_DAEMON_USER}])
	AC_MSG_RESULT([])
	AC_MSG_RESULT([ CFLAGS = ${CFLAGS}])
	AC_MSG_RESULT([ CFLAGS_HARDENED_EXE = ${CFLAGS_HARDENED_EXE}])
	AC_MSG_RESULT([ CFLAGS_HARDENED_LIB = ${CFLAGS_HARDENED_LIB}])
	AC_MSG_RESULT([ LDFLAGS_HARDENED_EXE = ${LDFLAGS_HARDENED_EXE}])
	AC_MSG_RESULT([ LDFLAGS_HARDENED_LIB = ${LDFLAGS_HARDENED_LIB}])
	AC_MSG_RESULT([ Libraries = ${LIBS}])
	AC_MSG_RESULT([ Stack Libraries = ${CLUSTERLIBS}])
	AC_MSG_RESULT([ Unix socket auth method = ${us_auth}])

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