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dnl  Copyright (c) 2006-2012 Red Hat, Inc. <http://www.redhat.com>
dnl  This file is part of GlusterFS.
dnl
dnl  This file is licensed to you under your choice of the GNU Lesser
dnl  General Public License, version 3 or any later version (LGPLv3 or
dnl  later), or the GNU General Public License, version 2 (GPLv2), in all
dnl  cases as published by the Free Software Foundation.

AC_INIT([glusterfs],[3.5git],[gluster-users@gluster.org],,[https://github.com/gluster/glusterfs.git])

AM_INIT_AUTOMAKE

m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES(yes)])

if make --help 2>&1 | grep -q no-print-directory; then
   AM_MAKEFLAGS="$AM_MAKEFLAGS --no-print-directory";
fi

if make --help 2>&1 | grep -q quiet; then
   AM_MAKEFLAGS="$AM_MAKEFLAGS --quiet"
fi

if libtool --help 2>&1 | grep -q quiet; then
   AM_LIBTOOLFLAGS="--quiet";
fi

AC_CONFIG_HEADERS([config.h])

AC_CONFIG_FILES([Makefile
                libglusterfs/Makefile
                libglusterfs/src/Makefile
                geo-replication/src/peer_gsec_create
                geo-replication/src/peer_add_secret_pub
                glusterfsd/Makefile
                glusterfsd/src/Makefile
                rpc/Makefile
                rpc/rpc-lib/Makefile
                rpc/rpc-lib/src/Makefile
                rpc/rpc-transport/Makefile
                rpc/rpc-transport/socket/Makefile
                rpc/rpc-transport/socket/src/Makefile
                rpc/rpc-transport/rdma/Makefile
                rpc/rpc-transport/rdma/src/Makefile
                rpc/xdr/Makefile
                rpc/xdr/src/Makefile
                xlators/Makefile
                xlators/mount/Makefile
                xlators/mount/fuse/Makefile
                xlators/mount/fuse/src/Makefile
                xlators/mount/fuse/utils/mount.glusterfs
                xlators/mount/fuse/utils/mount_glusterfs
                xlators/mount/fuse/utils/Makefile
                xlators/storage/Makefile
                xlators/storage/posix/Makefile
                xlators/storage/posix/src/Makefile
                xlators/storage/bd/Makefile
                xlators/storage/bd/src/Makefile
                xlators/cluster/Makefile
                xlators/cluster/afr/Makefile
                xlators/cluster/afr/src/Makefile
                xlators/cluster/stripe/Makefile
                xlators/cluster/stripe/src/Makefile
                xlators/cluster/dht/Makefile
                xlators/cluster/dht/src/Makefile
                xlators/performance/Makefile
                xlators/performance/write-behind/Makefile
                xlators/performance/write-behind/src/Makefile
                xlators/performance/read-ahead/Makefile
                xlators/performance/read-ahead/src/Makefile
                xlators/performance/readdir-ahead/Makefile
                xlators/performance/readdir-ahead/src/Makefile
                xlators/performance/io-threads/Makefile
                xlators/performance/io-threads/src/Makefile
                xlators/performance/io-cache/Makefile
                xlators/performance/io-cache/src/Makefile
                xlators/performance/symlink-cache/Makefile
                xlators/performance/symlink-cache/src/Makefile
                xlators/performance/quick-read/Makefile
                xlators/performance/quick-read/src/Makefile
                xlators/performance/open-behind/Makefile
                xlators/performance/open-behind/src/Makefile
                xlators/performance/md-cache/Makefile
                xlators/performance/md-cache/src/Makefile
                xlators/debug/Makefile
                xlators/debug/trace/Makefile
                xlators/debug/trace/src/Makefile
                xlators/debug/error-gen/Makefile
                xlators/debug/error-gen/src/Makefile
                xlators/debug/io-stats/Makefile
                xlators/debug/io-stats/src/Makefile
                xlators/protocol/Makefile
                xlators/protocol/auth/Makefile
                xlators/protocol/auth/addr/Makefile
                xlators/protocol/auth/addr/src/Makefile
                xlators/protocol/auth/login/Makefile
                xlators/protocol/auth/login/src/Makefile
                xlators/protocol/client/Makefile
                xlators/protocol/client/src/Makefile
                xlators/protocol/server/Makefile
                xlators/protocol/server/src/Makefile
                xlators/features/Makefile
		xlators/features/changelog/Makefile
		xlators/features/changelog/src/Makefile
		xlators/features/changelog/lib/Makefile
		xlators/features/changelog/lib/src/Makefile
                xlators/features/glupy/Makefile
                xlators/features/glupy/examples/Makefile
                xlators/features/glupy/src/Makefile
                xlators/features/glupy/src/setup.py
                xlators/features/locks/Makefile
                xlators/features/locks/src/Makefile
                xlators/features/quota/Makefile
                xlators/features/quota/src/Makefile
                xlators/features/marker/Makefile
                xlators/features/marker/src/Makefile
                xlators/features/read-only/Makefile
                xlators/features/read-only/src/Makefile
                xlators/features/compress/Makefile
                xlators/features/compress/src/Makefile
                xlators/features/mac-compat/Makefile
                xlators/features/mac-compat/src/Makefile
                xlators/features/quiesce/Makefile
                xlators/features/quiesce/src/Makefile
                xlators/features/index/Makefile
                xlators/features/index/src/Makefile
                xlators/features/protect/Makefile
                xlators/features/protect/src/Makefile
                xlators/features/gfid-access/Makefile
                xlators/features/gfid-access/src/Makefile
                xlators/playground/Makefile
                xlators/playground/template/Makefile
                xlators/playground/template/src/Makefile
                xlators/encryption/Makefile
                xlators/encryption/rot-13/Makefile
                xlators/encryption/rot-13/src/Makefile
                xlators/encryption/crypt/Makefile
                xlators/encryption/crypt/src/Makefile
		xlators/features/qemu-block/Makefile
		xlators/features/qemu-block/src/Makefile
                xlators/system/Makefile
                xlators/system/posix-acl/Makefile
                xlators/system/posix-acl/src/Makefile
                xlators/nfs/Makefile
                xlators/nfs/server/Makefile
                xlators/nfs/server/src/Makefile
                xlators/mgmt/Makefile
                xlators/mgmt/glusterd/Makefile
                xlators/mgmt/glusterd/src/Makefile
                cli/Makefile
                cli/src/Makefile
                doc/Makefile
                extras/Makefile
                extras/init.d/Makefile
                extras/init.d/glusterd.plist
                extras/init.d/glusterd-Debian
                extras/init.d/glusterd-Redhat
                extras/init.d/glusterd-SuSE
                extras/systemd/Makefile
                extras/systemd/glusterd.service
                extras/benchmarking/Makefile
                extras/hook-scripts/Makefile
                extras/ocf/Makefile
                extras/ocf/glusterd
                extras/ocf/volume
                extras/LinuxRPM/Makefile
                extras/geo-rep/Makefile
                extras/hook-scripts/add-brick/Makefile
                extras/hook-scripts/add-brick/pre/Makefile
                extras/hook-scripts/add-brick/post/Makefile
                contrib/fuse-util/Makefile
                contrib/uuid/uuid_types.h
                glusterfs-api.pc
                libgfchangelog.pc
                api/Makefile
                api/src/Makefile
                api/src/gfapi.map
                api/examples/Makefile
                api/examples/__init__.py
                api/examples/setup.py
		geo-replication/Makefile
		geo-replication/src/Makefile
		geo-replication/syncdaemon/Makefile
                heal/Makefile
                heal/src/Makefile
                glusterfs.spec])

AC_CANONICAL_HOST

AC_PROG_CC
AC_DISABLE_STATIC
AC_PROG_LIBTOOL

AC_ARG_WITH(pkgconfigdir,
            [  --with-pkgconfigdir=DIR      pkgconfig file in DIR @<:@LIBDIR/pkgconfig@:>@],
            [pkgconfigdir=$withval],
            [pkgconfigdir='${libdir}/pkgconfig'])
AC_SUBST(pkgconfigdir)

AC_ARG_WITH(mountutildir,
            [  --with-mountutildir=DIR mount helper utility in DIR @<:@/sbin@:>@],
            [mountutildir=$withval],
            [mountutildir='/sbin'])
AC_SUBST(mountutildir)

AC_ARG_WITH(systemddir,
            [  --with-systemddir=DIR systemd service files in DIR @<:@/usr/lib/systemd/system@:>@],
            [systemddir=$withval],
            [systemddir='/usr/lib/systemd/system'])
AC_SUBST(systemddir)

AC_ARG_WITH(initdir,
            [  --with-initdir=DIR init.d scripts in DIR @<:@/etc/init.d@:>@],
            [initdir=$withval],
            [initdir='/etc/init.d'])
AC_SUBST(initdir)

AC_ARG_WITH(launchddir,
            [  --with-launchddir=DIR launchd services in DIR @<:@/Library/LaunchDaemons@:>@],
            [launchddir=$withval],
            [launchddir='/Library/LaunchDaemons'])
AC_SUBST(launchddir)

AC_ARG_WITH([ocf],
            [AS_HELP_STRING([--without-ocf], [build OCF-compliant cluster resource agents])],
            ,
            [OCF_SUBDIR='ocf'],
            )
AC_SUBST(OCF_SUBDIR)

# LEX needs a check
AC_PROG_LEX
if test  "x${LEX}" != "xflex" -a "x${FLEX}" != "xlex"; then
   AC_MSG_ERROR([Flex or lex required to build glusterfs.])
fi

dnl
dnl Word sizes...
dnl
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(long long)
SIZEOF_SHORT=$ac_cv_sizeof_short
SIZEOF_INT=$ac_cv_sizeof_int
SIZEOF_LONG=$ac_cv_sizeof_long
SIZEOF_LONG_LONG=$ac_cv_sizeof_long_long
AC_SUBST(SIZEOF_SHORT)
AC_SUBST(SIZEOF_INT)
AC_SUBST(SIZEOF_LONG)
AC_SUBST(SIZEOF_LONG_LONG)

# YACC needs a check
AC_PROG_YACC
if test "x${YACC}" = "xbyacc" -o "x${YACC}" = "xyacc" -o "x${YACC}" = "x"; then
   AC_MSG_ERROR([GNU Bison required to build glusterfs.])
fi

AC_CHECK_TOOL([LD],[ld])

AC_CHECK_LIB([crypto], [MD5], , AC_MSG_ERROR([OpenSSL crypto library is required to build glusterfs]))

AC_CHECK_LIB([pthread], [pthread_mutex_init], , AC_MSG_ERROR([Posix threads library is required to build glusterfs]))

AC_CHECK_FUNC([dlopen], [has_dlopen=yes], AC_CHECK_LIB([dl], [dlopen], , AC_MSG_ERROR([Dynamic linking library required to build glusterfs])))

AC_CHECK_HEADERS([sys/xattr.h])

AC_CHECK_HEADERS([sys/extattr.h])

AC_CHECK_HEADERS([openssl/md5.h])

AC_CHECK_HEADERS([linux/falloc.h])

case $host_os in
  darwin*)
    if ! test "`/usr/bin/sw_vers | grep ProductVersion: | cut -f 2 | cut -d. -f2`" -ge 5; then
      AC_MSG_ERROR([You need at least OS X 10.5 (Leopard) to build Glusterfs])
    fi
    ;;
esac

dnl Mac OS X does not have spinlocks
AC_CHECK_FUNC([pthread_spin_init], [have_spinlock=yes])
if test "x${have_spinlock}" = "xyes"; then
   AC_DEFINE(HAVE_SPINLOCK, 1, [define if found spinlock])
fi
AC_SUBST(HAVE_SPINLOCK)

dnl some os may not have GNU defined strnlen function
AC_CHECK_FUNC([strnlen], [have_strnlen=yes])
if test "x${have_strnlen}" = "xyes"; then
   AC_DEFINE(HAVE_STRNLEN, 1, [define if found strnlen])
fi
AC_SUBST(HAVE_STRNLEN)


AC_CHECK_FUNC([setfsuid], [have_setfsuid=yes])
AC_CHECK_FUNC([setfsgid], [have_setfsgid=yes])

if test "x${have_setfsuid}" = "xyes" -a "x${have_setfsgid}" = "xyes"; then
  AC_DEFINE(HAVE_SET_FSID, 1, [define if found setfsuid setfsgid])
fi


# FUSE section
AC_ARG_ENABLE([fuse-client],
              AC_HELP_STRING([--disable-fuse-client],
                             [Do not build the fuse client. NOTE: you cannot mount glusterfs without the client]))

BUILD_FUSE_CLIENT=no
if test "x$enable_fuse_client" != "xno"; then
   FUSE_CLIENT_SUBDIR=fuse
   BUILD_FUSE_CLIENT="yes"
fi

AC_ARG_ENABLE([bd-xlator],
              AC_HELP_STRING([--enable-bd-xlator], [Build BD xlator]))

if test "x$enable_bd_xlator" != "xno"; then
  AC_CHECK_LIB([lvm2app],
               [lvm_init,lvm_lv_from_name],
               [HAVE_BD_LIB="yes"],
               [HAVE_BD_LIB="no"])

if test "x$HAVE_BD_LIB" = "xyes"; then
    # lvm_lv_from_name() has been made public with lvm2-2.02.79
    AC_CHECK_DECLS(
                  [lvm_lv_from_name],
                  [NEED_LVM_LV_FROM_NAME_DECL="no"],
                  [NEED_LVM_LV_FROM_NAME_DECL="yes"],
                  [[#include <lvm2app.h>]])
  fi
fi

if test "x$enable_bd_xlator" = "xyes" -a "x$HAVE_BD_LIB" = "xno"; then
   echo "BD xlator requested but required lvm2 development library not found."
   exit 1
fi

BUILD_BD_XLATOR=no
if test "x${enable-bd-xlator}" != "xno" -a "x${HAVE_BD_LIB}" = "xyes"; then
  BUILD_BD_XLATOR=yes
  AC_DEFINE(HAVE_BD_XLATOR, 1, [define if lvm2app library found and bd xlator
                            enabled])
  if test "x$NEED_LVM_LV_FROM_NAME_DECL" = "xyes"; then
    AC_DEFINE(NEED_LVM_LV_FROM_NAME_DECL, 1, [defined if lvm_lv_from_name()
                  was not found in the lvm2app.h header, but can be linked])
  fi
fi

AM_CONDITIONAL([ENABLE_BD_XLATOR], [test x$BUILD_BD_XLATOR = xyes])

# start encryption/crypt section

AC_CHECK_HEADERS([openssl/cmac.h], [have_cmac_h=yes], [have_cmac_h=no])

AC_ARG_ENABLE([crypt-xlator],
	AC_HELP_STRING([--enable-crypt-xlator], [Build crypt encryption xlator]))

if test "x$enable_crypt_xlator" = "xyes" -a "x$have_cmac_h" = "xno"; then
   echo "Encryption xlator requires OpenSSL with cmac.h"
   exit 1
fi

BUILD_CRYPT_XLATOR=no
if test "x$enable_crypt_xlator" != "xno" -a "x$have_cmac_h" = "xyes"; then
   BUILD_CRYPT_XLATOR=yes
   AC_DEFINE(HAVE_CRYPT_XLATOR, 1, [enable building crypt encryption xlator])
fi

AM_CONDITIONAL([ENABLE_CRYPT_XLATOR], [test x$BUILD_CRYPT_XLATOR = xyes])

AC_SUBST(FUSE_CLIENT_SUBDIR)
# end FUSE section


# FUSERMOUNT section
AC_ARG_ENABLE([fusermount],
              AC_HELP_STRING([--disable-fusermount],
                             [Use system's fusermount]))

BUILD_FUSERMOUNT="yes"
if test "x$enable_fusermount" = "xno"; then
  BUILD_FUSERMOUNT="no"
else
  AC_DEFINE(GF_FUSERMOUNT, 1, [Use our own fusermount])
  FUSERMOUNT_SUBDIR="contrib/fuse-util"
fi

AC_SUBST(FUSERMOUNT_SUBDIR)
#end FUSERMOUNT section

# QEMU_BLOCK section

AC_ARG_ENABLE([qemu-block],
                AC_HELP_STRING([--enable-qemu-block],
                        [Build QEMU Block formats translator]))

if test "x$enable_qemu_block" != "xno"; then
  PKG_CHECK_MODULES([GLIB], [glib-2.0],
                    [HAVE_GLIB_2="yes"],
  		    [HAVE_GLIB_2="no"])
fi

if test "x$enable_qemu_block" = "xyes" -a "x$HAVE_GLIB_2" = "xno"; then
   echo "QEMU Block formats translator requires libglib-2.0, but missing."
   exit 1
fi

BUILD_QEMU_BLOCK=no
if test "x${enable_qemu_block}" != "xno" -a "x${HAVE_GLIB_2}" = "xyes"; then
  BUILD_QEMU_BLOCK=yes
  AC_DEFINE(HAVE_QEMU_BLOCK, 1, [define if libglib-2.0 library found and QEMU
                  	     Block translator enabled])
fi

AM_CONDITIONAL([ENABLE_QEMU_BLOCK], [test x$BUILD_QEMU_BLOCK = xyes])

# end QEMU_BLOCK section

# EPOLL section
AC_ARG_ENABLE([epoll],
              AC_HELP_STRING([--disable-epoll],
                             [Use poll instead of epoll.]))

BUILD_EPOLL=no
if test "x$enable_epoll" != "xno"; then
   AC_CHECK_HEADERS([sys/epoll.h],
                    [BUILD_EPOLL=yes],
                    [BUILD_EPOLL=no])
fi
# end EPOLL section


# IBVERBS section
AC_ARG_ENABLE([ibverbs],
              AC_HELP_STRING([--disable-ibverbs],
                             [Do not build the ibverbs transport]))

if test "x$enable_ibverbs" != "xno"; then
  AC_CHECK_LIB([ibverbs],
               [ibv_get_device_list],
               [HAVE_LIBIBVERBS="yes"],
               [HAVE_LIBIBVERBS="no"])
  AC_CHECK_LIB([rdmacm], [rdma_create_id], [HAVE_RDMACM="yes"], [HAVE_RDMACM="no"])
fi

if test "x$enable_ibverbs" = "xyes"; then
   if test "x$HAVE_LIBIBVERBS" = "xno"; then
      echo "ibverbs-transport requested, but libibverbs is not present."
      exit 1
   fi

   if test "x$HAVE_RDMACM" = "xno"; then
      echo "ibverbs-transport requested, but librdmacm is not present."
      exit 1
   fi
fi

BUILD_RDMA=no
BUILD_IBVERBS=no
if test "x$enable_ibverbs" != "xno" -a "x$HAVE_LIBIBVERBS" = "xyes" -a "x$HAVE_RDMACM" = "xyes"; then
  IBVERBS_SUBDIR=ib-verbs
  BUILD_IBVERBS=yes
  RDMA_SUBDIR=rdma
  BUILD_RDMA=yes
fi

AC_SUBST(IBVERBS_SUBDIR)
AC_SUBST(RDMA_SUBDIR)
# end IBVERBS section


# SYNCDAEMON section
AC_ARG_ENABLE([georeplication],
              AC_HELP_STRING([--disable-georeplication],
                             [Do not install georeplication components]))

BUILD_SYNCDAEMON=no
case $host_os in
     linux*)
#do nothing
       ;;
     netbsd*)
#do nothing
       ;;
     *)
#disabling geo replication for non-linux platforms
        enable_georeplication=no
        ;;
esac
SYNCDAEMON_COMPILE=0
if test "x$enable_georeplication" != "xno"; then
  SYNCDAEMON_SUBDIR=geo-replication
  SYNCDAEMON_COMPILE=1

  BUILD_SYNCDAEMON="yes"
  AM_PATH_PYTHON([2.4])
  echo -n "checking if python is python 2.x... "
  if echo $PYTHON_VERSION | grep ^2; then
    :
  else
    echo no
    AC_MSG_ERROR([only python 2.x is supported])
  fi
  echo -n "checking if python has ctypes support... "
  if "$PYTHON" -c 'import ctypes' 2>/dev/null; then
    echo yes
  else
    echo no
    AC_MSG_ERROR([python does not have ctypes support])
  fi
fi
AC_SUBST(SYNCDAEMON_COMPILE)
AC_SUBST(SYNCDAEMON_SUBDIR)
# end SYNCDAEMON section

# CDC xlator - check if libz is present if so enable HAVE_LIB_Z
echo -n "checking if libz is present... "

PKG_CHECK_MODULES([ZLIB], [zlib >= 1.2.0],
                  [echo "yes (features requiring zlib enabled)"  AC_DEFINE(HAVE_LIB_Z, 1, [define if zlib is present])],
                  [echo "no"] )

AC_SUBST(LIBZ_CFLAGS)
AC_SUBST(LIBZ_LIBS)
# end CDC xlator secion

# check for systemtap/dtrace
BUILD_SYSTEMTAP=no
AC_MSG_CHECKING([whether to include systemtap tracing support])
AC_ARG_ENABLE([systemtap],
              [AS_HELP_STRING([--enable-systemtap],
              [Enable inclusion of systemtap trace support])],
              [ENABLE_SYSTEMTAP="${enableval}"], [ENABLE_SYSTEMTAP="def"])

AM_CONDITIONAL([ENABLE_SYSTEMTAP], [test "x${ENABLE_SYSTEMTAP}" = "xyes"])
AC_MSG_RESULT(${ENABLE_SYSTEMTAP})

if test "x${ENABLE_SYSTEMTAP}" != "xno"; then
    AC_CHECK_PROG(DTRACE, dtrace, "yes", "no")
    AC_CHECK_HEADER([sys/sdt.h], [SDT_H_FOUND="yes"],
                    [SDT_H_FOUND="no"])
fi

if test "x${ENABLE_SYSTEMTAP}" = "xyes"; then
    if test "x${DTRACE}" = "xno"; then
        AC_MSG_ERROR([dtrace not found])
    elif test "$x{SDT_H_FOUND}" = "xno"; then
        AC_MSG_ERROR([systemtap support needs sys/sdt.h header])
    fi
fi

if test "x${DTRACE}" = "xyes" -a "x${SDT_H_FOUND}" = "xyes"; then
    AC_MSG_CHECKING([x"${DTRACE}"xy"${SDT_H_FOUND}"y])
    AC_DEFINE([HAVE_SYSTEMTAP], [1], [Define to 1 if using  probes.])
    BUILD_SYSTEMTAP=yes
fi
# end of systemtap/dtrace

# xml-output
AC_ARG_ENABLE([xml-output],
              AC_HELP_STRING([--disable-xml-output],
                             [Disable the xml output]))
BUILD_XML_OUTPUT="yes"
if test "x$enable_xml_output" != "xno"; then
    #check if libxml is present if so enable HAVE_LIB_XML
    m4_ifdef([AM_PATH_XML2],[AM_PATH_XML2([2.6.19])], [no_xml=yes])
    if test "x${no_xml}" = "x"; then
        AC_DEFINE([HAVE_LIB_XML], [1], [Define to 1 if using libxml2.])
    else
        AC_MSG_WARN([libxml2 devel libraries not found disabling XML support])
        BUILD_XML_OUTPUT="no"
    fi
else
    BUILD_XML_OUTPUT="no"
fi
# end of xml-output

dnl FreeBSD > 5 has execinfo as a Ported library for giving a workaround
dnl solution to GCC backtrace functionality

AC_CHECK_HEADERS([execinfo.h], [have_backtrace=yes],
               AC_CHECK_LIB([execinfo], [backtrace], [have_backtrace=yes]))
dnl               AC_MSG_ERROR([libexecinfo not found libexecinfo required.])))

if test "x${have_backtrace}" = "xyes"; then
   AC_DEFINE(HAVE_BACKTRACE, 1, [define if found backtrace])
fi
AC_SUBST(HAVE_BACKTRACE)

dnl glusterfs prints memory usage to stderr by sending it SIGUSR1
AC_CHECK_FUNC([malloc_stats], [have_malloc_stats=yes])
if test "x${have_malloc_stats}" = "xyes"; then
   AC_DEFINE(HAVE_MALLOC_STATS, 1, [define if found malloc_stats])
fi
AC_SUBST(HAVE_MALLOC_STATS)

dnl Linux, Solaris, Cygwin
AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec])
dnl FreeBSD, NetBSD
AC_CHECK_MEMBERS([struct stat.st_atimespec.tv_nsec])
case $host_os in
        *netbsd*)
        CFLAGS="${CFLAGS} -D_INCOMPLETE_XOPEN_C063 -DCONFIG_MACHINE_BSWAP_H"
        ;;
esac
AC_CHECK_FUNC([linkat], [have_linkat=yes])
if test "x${have_linkat}" = "xyes"; then
   AC_DEFINE(HAVE_LINKAT, 1, [define if found linkat])
fi
AC_SUBST(HAVE_LINKAT)

dnl check for Monotonic clock
AC_CHECK_FUNC([clock_gettime], [has_monotonic_clock=yes], AC_CHECK_LIB([rt], [clock_gettime], , AC_MSG_WARN([System doesn't have monotonic clock using contrib])))

dnl Check for argp
AC_CHECK_HEADER([argp.h], AC_DEFINE(HAVE_ARGP, 1, [have argp]))
AC_CONFIG_SUBDIRS(argp-standalone)

BUILD_ARGP_STANDALONE=no
if test "x${ac_cv_header_argp_h}" = "xno"; then
   BUILD_ARGP_STANDALONE=yes
   ARGP_STANDALONE_CPPFLAGS='-I${top_srcdir}/argp-standalone'
   ARGP_STANDALONE_LDADD='${top_builddir}/argp-standalone/libargp.a'
fi

AC_SUBST(ARGP_STANDALONE_CPPFLAGS)
AC_SUBST(ARGP_STANDALONE_LDADD)

AC_CHECK_HEADER([malloc.h], AC_DEFINE(HAVE_MALLOC_H, 1, [have malloc.h]))

AC_CHECK_FUNC([llistxattr], [have_llistxattr=yes])
if test "x${have_llistxattr}" = "xyes"; then
   AC_DEFINE(HAVE_LLISTXATTR, 1, [define if llistxattr exists])
fi

AC_CHECK_FUNC([fdatasync], [have_fdatasync=yes])
if test "x${have_fdatasync}" = "xyes"; then
   AC_DEFINE(HAVE_FDATASYNC, 1, [define if fdatasync exists])
fi

AC_CHECK_FUNC([fallocate], [have_fallocate=yes])
if test "x${have_fallocate}" = "xyes"; then
   AC_DEFINE(HAVE_FALLOCATE, 1, [define if fallocate exists])
fi

AC_CHECK_FUNC([posix_fallocate], [have_posix_fallocate=yes])
if test "x${have_posix_fallocate}" = "xyes"; then
   AC_DEFINE(HAVE_POSIX_FALLOCATE, 1, [define if posix_fallocate exists])
fi


# Check the distribution where you are compiling glusterfs on

GF_DISTRIBUTION=
AC_CHECK_FILE([/etc/debian_version])
AC_CHECK_FILE([/etc/SuSE-release])
AC_CHECK_FILE([/etc/redhat-release])

if test "x$ac_cv_file__etc_debian_version" = "xyes"; then
   GF_DISTRIBUTION=Debian
fi
if test "x$ac_cv_file__etc_SuSE_release" = "xyes"; then
   GF_DISTRIBUTION=SuSE
fi
if test "x$ac_cv_file__etc_redhat_release" = "xyes"; then
   GF_DISTRIBUTION=Redhat
fi

AC_SUBST(GF_DISTRIBUTION)

GF_HOST_OS=""
GF_LDFLAGS="-rdynamic"

# check for gcc -Werror=format-security
saved_CFLAGS=$CFLAGS
CFLAGS="-Wformat -Werror=format-security"
AC_MSG_CHECKING([whether $CC accepts -Werror=format-security])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [cc_werror_format_security=yes], [cc_werror_format_security=no])
echo $cc_werror_format_security
if test "x$cc_werror_format_security" = "xno"; then
    CFLAGS="$saved_CFLAGS"
else
    CFLAGS="$saved_CFLAGS $CFLAGS"
fi

# check for gcc -Werror=implicit-function-declaration
saved_CFLAGS=$CFLAGS
CFLAGS="-Werror=implicit-function-declaration"
AC_MSG_CHECKING([whether $CC accepts -Werror=implicit-function-declaration])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [cc_werror_implicit=yes], [cc_werror_implicit=no])
echo $cc_werror_implicit
if test "x$cc_werror_implicit" = "xno"; then
    CFLAGS="$saved_CFLAGS"
else
    CFLAGS="$saved_CFLAGS $CFLAGS"
fi

case $host_os in
     linux*)
        GF_HOST_OS="GF_LINUX_HOST_OS"
        GF_CFLAGS="${ARGP_STANDALONE_CPPFLAGS} -O0"
        GF_GLUSTERFS_CFLAGS="${GF_CFLAGS}"
        GF_LDADD="${ARGP_STANDALONE_LDADD}"
        GF_FUSE_CFLAGS="-DFUSERMOUNT_DIR=\\\"\$(bindir)\\\""
        ;;
     solaris*)
        GF_HOST_OS="GF_SOLARIS_HOST_OS"
        GF_CFLAGS="${ARGP_STANDALONE_CPPFLAGS} -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -O0 -m64"
        GF_LDFLAGS=""
        GF_GLUSTERFS_CFLAGS="${GF_CFLAGS}"
        GF_LDADD="${ARGP_STANDALONE_LDADD}"
        GF_GLUSTERFS_LIBS="-lnsl -lresolv -lsocket"
        BUILD_FUSE_CLIENT=no
        FUSE_CLIENT_SUBDIR=""
        ;;
     *netbsd*)
        GF_HOST_OS="GF_BSD_HOST_OS"
        GF_CFLAGS="${ARGP_STANDALONE_CPPFLAGS} -D_INCOMPLETE_XOPEN_C063"
        GF_CFLAGS="${GF_CFLAGS} -DTHREAD_UNSAFE_BASENAME"
        GF_CFLAGS="${GF_CFLAGS} -DTHREAD_UNSAFE_DIRNAME"
        GF_GLUSTERFS_CFLAGS="${GF_CFLAGS}"
        GF_LDADD="${ARGP_STANDALONE_LDADD}"
        if test "x$ac_cv_header_execinfo_h" = "xyes"; then
           GF_GLUSTERFS_LIBS="-lexecinfo"
        fi
        GF_FUSE_LDADD="-lperfuse"
        BUILD_FUSE_CLIENT=yes
        LEXLIB=""
        ;;
     *bsd*)
        GF_HOST_OS="GF_BSD_HOST_OS"
        GF_CFLAGS="${ARGP_STANDALONE_CPPFLAGS} -O0"
        GF_CFLAGS="${GF_CFLAGS} -DTHREAD_UNSAFE_BASENAME"
        GF_CFLAGS="${GF_CFLAGS} -DTHREAD_UNSAFE_DIRNAME"
        GF_GLUSTERFS_CFLAGS="${GF_CFLAGS}"
        GF_LDADD="${ARGP_STANDALONE_LDADD}"
        if test "x$ac_cv_header_execinfo_h" = "xyes"; then
           GF_GLUSTERFS_LIBS="-lexecinfo"
        fi
        BUILD_FUSE_CLIENT=no
        ;;
     darwin*)
        GF_HOST_OS="GF_DARWIN_HOST_OS"
        LIBTOOL=glibtool
        GF_CFLAGS="${ARGP_STANDALONE_CPPFLAGS} -D__DARWIN_64_BIT_INO_T -bundle -undefined suppress -flat_namespace -D_XOPEN_SOURCE -O0"
        GF_CFLAGS="${GF_CFLAGS} -DTHREAD_UNSAFE_BASENAME"
        GF_CFLAGS="${GF_CFLAGS} -DTHREAD_UNSAFE_DIRNAME"
        GF_GLUSTERFS_CFLAGS="${ARGP_STANDALONE_CPPFLAGS} -D__DARWIN_64_BIT_INO_T -undefined suppress -flat_namespace -O0"
        GF_LDADD="${ARGP_STANDALONE_LDADD}"
        GF_FUSE_CFLAGS="-I\$(CONTRIBDIR)/macfuse"
        ;;
esac

# enable debug section
AC_ARG_ENABLE([debug],
              AC_HELP_STRING([--enable-debug],
                             [Enable debug build options.]))

# syslog section
AC_ARG_ENABLE([syslog],
	      AC_HELP_STRING([--disable-syslog],
			     [Disable syslog for logging]))

USE_SYSLOG="yes"
if test "x$enable_syslog" != "xno"; then
  AC_DEFINE(GF_USE_SYSLOG, 1, [Use syslog for logging])
else
  USE_SYSLOG="no"
fi
AM_CONDITIONAL([ENABLE_SYSLOG], [test x$USE_SYSLOG = xyes])
#end syslog section

BUILD_READLINE=no
AC_CHECK_LIB([readline -lcurses],[readline],[RLLIBS="-lreadline -lcurses"])
AC_CHECK_LIB([readline -ltermcap],[readline],[RLLIBS="-lreadline -ltermcap"])
AC_CHECK_LIB([readline -lncurses],[readline],[RLLIBS="-lreadline -lncurses"])

AC_CHECK_LIB([intl], [gettext])

if test "x$RLLIBS" != "x"; then
   AC_DEFINE(HAVE_READLINE, 1, [readline enabled CLI])
   BUILD_READLINE=yes
fi

BUILD_LIBAIO=no
AC_CHECK_LIB([aio],[io_setup],[LIBAIO="-laio"])

if test "x$LIBAIO" != "x"; then
   AC_DEFINE(HAVE_LIBAIO, 1, [libaio based POSIX enabled])
   BUILD_LIBAIO=yes
fi

# glupy section
BUILD_GLUPY=no
have_python2=no
have_Python_h=no

AM_PATH_PYTHON()
if echo $PYTHON_VERSION | grep ^2; then
  have_python2=yes
fi
saved_CFLAGS=$CFLAGS
saved_CPPFLAGS=$CPPFLAGS
saved_LDFLAGS=$LDFLAGS
CFLAGS=`${PYTHON}-config --cflags`
CPPFLAGS=$CFLAGS
LDFLAGS="-L`${PYTHON}-config --prefix`/lib `${PYTHON}-config --ldflags`"
AC_CHECK_HEADERS([python$PYTHON_VERSION/Python.h],[have_Python_h=yes],[])
AC_ARG_ENABLE([glupy],
              AS_HELP_STRING([--enable-glupy],
                             [build glupy]))
case x$enable_glupy in
   xyes)
      if test "x$have_python2" = "xyes" -a "x$have_Python_h" = "xyes"; then
         BUILD_GLUPY=yes
         saved_CFLAGS="$saved_CFLAGS $CFLAGS"
         saved_CPPFLAGS="$saved_CPPFLAGS $CPPFLAGS"
         saved_LDFLAGS="$saved_LDFLAGS $LDFLAGS"
      else
         AC_MSG_ERROR([glupy requires python-devel/python-dev package and python2.x])
      fi
      ;;
   xno)
      ;;
   *)
      if test "x$have_python2" = "xyes" -a "x$have_Python_h" = "xyes"; then
         BUILD_GLUPY=yes
         saved_CFLAGS="$saved_CFLAGS $CFLAGS"
         saved_CPPFLAGS="$saved_CPPFLAGS $CPPFLAGS"
         saved_LDFLAGS="$saved_LDFLAGS $LDFLAGS"
      else
         AC_MSG_WARN([
        ---------------------------------------------------------------------------------
         cannot build glupy. python 2.x and python-devel/python-dev package are required.
        ---------------------------------------------------------------------------------])
      fi
      ;;
esac
CFLAGS=$saved_CFLAGS
CPPFLAGS=$saved_CPPFLAGS
LDFLAGS=$saved_LDFLAGS

if test "x$BUILD_GLUPY" = "xyes"; then
   BUILD_PYTHON_INC=`$PYTHON -c "from distutils import sysconfig; print sysconfig.get_python_inc()"`
   BUILD_PYTHON_LIB=python$PYTHON_VERSION
   GLUPY_SUBDIR=glupy
   GLUPY_SUBDIR_MAKEFILE=xlators/features/glupy/Makefile
   GLUPY_SUBDIR_SRC_MAKEFILE=xlators/features/glupy/src/Makefile
   echo "building glupy with -isystem $BUILD_PYTHON_INC -l $BUILD_PYTHON_LIB"
   AC_SUBST(BUILD_PYTHON_INC)
   AC_SUBST(BUILD_PYTHON_LIB)
   AC_SUBST(GLUPY_SUBDIR)
   AC_SUBST(GLUPY_SUBDIR_MAKEFILE)
   AC_SUBST(GLUPY_SUBDIR_SRC_MAKEFILE)
fi
# end glupy section

# Other stuff (most notably the glupy section) might have injected another -O2
# into CFLAGS, so *do this last*.
BUILD_DEBUG=no
if test "x$enable_debug" = "xyes"; then
   BUILD_DEBUG=yes
   CFLAGS=`echo $CFLAGS | sed -e s/O2/O0/g`
else
   BUILD_DEBUG=no
fi
AC_SUBST(CFLAGS)
# end enable debug section

AC_SUBST(GF_HOST_OS)
AC_SUBST([GF_GLUSTERFS_LIBS])
AC_SUBST(GF_GLUSTERFS_CFLAGS)
AC_SUBST(GF_CFLAGS)
AC_SUBST(GF_LDFLAGS)
AC_SUBST(GF_LDADD)
AC_SUBST(GF_FUSE_LDADD)
AC_SUBST(GF_FUSE_CFLAGS)
AC_SUBST(RLLIBS)
AC_SUBST(LIBAIO)
AC_SUBST(AM_MAKEFLAGS)
AC_SUBST(AM_LIBTOOLFLAGS)

CONTRIBDIR='$(top_srcdir)/contrib'
AC_SUBST(CONTRIBDIR)

GF_CPPDEFINES='-D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D$(GF_HOST_OS)'
GF_CPPINCLUDES='-I$(top_srcdir)/libglusterfs/src -I$(CONTRIBDIR)/uuid'
GF_CPPFLAGS="$GF_CPPDEFINES $GF_CPPINCLUDES"
AC_SUBST([GF_CPPFLAGS])

AM_CONDITIONAL([GF_DARWIN_HOST_OS], test "${GF_HOST_OS}" = "GF_DARWIN_HOST_OS")

AM_CONDITIONAL([GF_INSTALL_VAR_LIB_GLUSTERD], test ! -d ${localstatedir}/lib/glusterd && test -d ${sysconfdir}/glusterd )

dnl pkg-config versioning
dnl
dnl Once we released gluster-api.pc with version=4. Since then we undid the
dnl library versioning and replaced it with symbol-versioning. The current
dnl libgfapi.so has version 0, but the symbols have the version from the main
dnl package at the time they were added.
dnl
dnl Because other packages (like samba) use the pkg-config version, we can not
dnl drop it, or decrease the version easily. The simplest solution is to keep
dnl the version=4 and add sub-digits for the actual package/symbol versions.
GFAPI_VERSION="4."${PACKAGE_VERSION}
AC_SUBST(GFAPI_VERSION)

AC_OUTPUT

echo
echo "GlusterFS configure summary"
echo "==========================="
echo "FUSE client          : $BUILD_FUSE_CLIENT"
echo "Infiniband verbs     : $BUILD_IBVERBS"
echo "epoll IO multiplex   : $BUILD_EPOLL"
echo "argp-standalone      : $BUILD_ARGP_STANDALONE"
echo "fusermount           : $BUILD_FUSERMOUNT"
echo "readline             : $BUILD_READLINE"
echo "georeplication       : $BUILD_SYNCDAEMON"
echo "Linux-AIO            : $BUILD_LIBAIO"
echo "Enable Debug         : $BUILD_DEBUG"
echo "systemtap            : $BUILD_SYSTEMTAP"
echo "Block Device xlator  : $BUILD_BD_XLATOR"
echo "glupy                : $BUILD_GLUPY"
echo "Use syslog           : $USE_SYSLOG"
echo "XML output           : $BUILD_XML_OUTPUT"
echo "QEMU Block formats   : $BUILD_QEMU_BLOCK"
echo "Encryption xlator    : $BUILD_CRYPT_XLATOR"
echo