# libguestfs
# Copyright (C) 2009-2012 Red Hat Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

# The major, minor, and release fields MUST be numbers.  Packagers can
# add extra information using --with-extra="..." which may be any
# freeform string.
m4_define([libguestfs_major],   [1])
m4_define([libguestfs_minor],   [18])
m4_define([libguestfs_release], [1])

AC_INIT([libguestfs],libguestfs_major.libguestfs_minor.libguestfs_release)
AC_CONFIG_AUX_DIR([build-aux])
AM_INIT_AUTOMAKE([foreign])

m4_ifndef([AM_SILENT_RULES], [m4_define([AM_SILENT_RULES],[])])
AM_SILENT_RULES([yes]) # make --enable-silent-rules the default.

AC_CONFIG_MACRO_DIR([m4])

dnl Stable or unstable version?
AC_MSG_CHECKING([if this is a stable or unstable branch of libguestfs])
AS_IF([test "$((libguestfs_minor % 2))" -eq 0 ],[
            AC_MSG_RESULT([stable])
       ],[
            AC_MSG_RESULT([unstable])
            AC_MSG_NOTICE([
***
This is a development version of libguestfs. Some APIs may be unstable
until they appear in a stable release of libguestfs (at which point
the C API and ABI is guaranteed to remain stable forever).  For
more information about stable and development branches of libguestfs
please see the section "LIBGUESTFS VERSION NUMBERS" in guestfs(3).
***])
       ])

dnl Extra string, a freeform string defined by packagers.
AC_ARG_WITH([extra],
  [AS_HELP_STRING([--with-extra],
                  [extra version string (for use by packagers)])],
  [libguestfs_extra="$withval"],
  [libguestfs_extra=]
)

AC_MSG_NOTICE([libguestfs version libguestfs_major.libguestfs_minor.libguestfs_release$libguestfs_extra])

dnl Split up the version string.
AC_DEFINE([PACKAGE_VERSION_MAJOR],[libguestfs_major],[Major version number])
AC_DEFINE([PACKAGE_VERSION_MINOR],[libguestfs_minor],[Minor version number])
AC_DEFINE([PACKAGE_VERSION_RELEASE],[libguestfs_release],[Release number])
AC_DEFINE_UNQUOTED([PACKAGE_VERSION_EXTRA],["$libguestfs_extra"],[Extra version string])

dnl Early gnulib initialization.
gl_EARLY
gl_INIT

AC_PROG_LIBTOOL

AC_PROG_SED

dnl Check for basic C environment.
AC_PROG_CC_STDC
AC_PROG_INSTALL
AC_PROG_CPP

AC_ARG_ENABLE([gcc-warnings],
  [AS_HELP_STRING([--enable-gcc-warnings],
                  [turn on lots of GCC warnings (for developers)])],
  [case $enableval in
     yes|no) ;;
     *)      AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
   esac
   gl_gcc_warnings=$enableval],
  [gl_gcc_warnings=no]
)

if test "$gl_gcc_warnings" = yes; then
  gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
  AC_SUBST([WERROR_CFLAGS])

  nw=
  # This, $nw, is the list of warnings we disable.
  nw="$nw -Wdeclaration-after-statement" # too useful to forbid
  nw="$nw -Waggregate-return"       # anachronistic
  nw="$nw -Wc++-compat"             # We don't care about C++ compilers
  nw="$nw -Wundef"                  # Warns on '#if GNULIB_FOO' etc in gnulib
  nw="$nw -Wtraditional"            # Warns on #elif which we use often
  nw="$nw -Wcast-qual"              # Too many warnings for now
  nw="$nw -Wconversion"             # Too many warnings for now
  nw="$nw -Wsystem-headers"         # Don't let system headers trigger warnings
  nw="$nw -Wsign-conversion"        # Not an error
  nw="$nw -Wtraditional-conversion" # Don't care about pre-ANSI compilers
  nw="$nw -Wpadded"                 # Our structs are not padded
  nw="$nw -Wredundant-decls"        # openat.h declares e.g., mkdirat
  nw="$nw -Wlogical-op"             # any use of fwrite provokes this
  nw="$nw -Wvla"                    # two warnings in mount.c
  # things I might fix soon:
  nw="$nw -Wmissing-format-attribute" # daemon.h's asprintf_nowarn
  nw="$nw -Winline"                 # daemon.h's asprintf_nowarn
  nw="$nw -Wshadow"                 # numerous, plus we're not unanimous
  nw="$nw -Wunsafe-loop-optimizations" # just a warning that an optimization
                                    # was not possible, safe to ignore
  nw="$nw -Wpacked"                 # Allow attribute((packed)) on structs
  nw="$nw -Wlong-long"              # Allow long long since it's required
                                    # by Python, Ruby and xstrtoll.
  nw="$nw -Wsuggest-attribute=pure" # Don't suggest pure functions.
  nw="$nw -Wsuggest-attribute=const" # Don't suggest const functions.
  nw="$nw -Wunsuffixed-float-constants" # Don't care about these.

  gl_MANYWARN_ALL_GCC([ws])
  gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
  for w in $ws; do
    gl_WARN_ADD([$w])
  done

  # Normally we disable warnings in $nw above.  However for some
  # unknown reason that doesn't always work, and we need to explicitly
  # list a few disabled warnings below.

  gl_WARN_ADD([-Wno-unused-parameter]) # Unused parameters are not a bug.

  # Missing field initializers is not a bug in C.
  gl_WARN_ADD([-Wno-missing-field-initializers])

  # Display the name of the warning option with the warning.
  gl_WARN_ADD([-fdiagnostics-show-option])

  AC_SUBST([WARN_CFLAGS])

  AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
  AC_DEFINE([_FORTIFY_SOURCE], [2],
    [enable compile-time and run-time bounds-checking, and some warnings])
  AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
fi

AC_C_PROTOTYPES
test "x$U" != "x" && AC_MSG_ERROR([Compiler not ANSI compliant])

AM_PROG_CC_C_O

dnl Work out how to specify the linker script to the linker.
VERSION_SCRIPT_FLAGS=-Wl,--version-script=
`/usr/bin/ld --help 2>&1 | grep -- --version-script >/dev/null` || \
    VERSION_SCRIPT_FLAGS="-Wl,-M -Wl,"
AC_SUBST(VERSION_SCRIPT_FLAGS)

dnl Use -fvisibility=hidden by default in the library.
dnl http://gcc.gnu.org/wiki/Visibility
AS_IF([test -n "$GCC"],
    [AC_SUBST([GCC_VISIBILITY_HIDDEN], [-fvisibility=hidden])],
    [AC_SUBST([GCC_VISIBILITY_HIDDEN], [:])])

dnl Check support for 64 bit file offsets.
AC_SYS_LARGEFILE

dnl Check sizeof long.
AC_CHECK_SIZEOF([long])

dnl Check if dirent (readdir) supports d_type member.
AC_STRUCT_DIRENT_D_TYPE

dnl Check if stat has the required fields.
AC_STRUCT_ST_BLOCKS
AC_CHECK_MEMBER([struct stat.st_blksize],[
        AC_DEFINE([HAVE_STRUCT_STAT_ST_BLKSIZE],[1],[Define to 1 if 'st_blksize' is a member of 'struct stat'])])

dnl Define a C symbol for the host CPU architecture.
AC_DEFINE_UNQUOTED([host_cpu],["$host_cpu"],[Host architecture.])

dnl Headers.
AC_CHECK_HEADERS([\
        attr/xattr.h \
        byteswap.h \
        endian.h \
        errno.h \
        printf.h \
        sys/inotify.h \
        sys/socket.h \
        sys/statvfs.h \
        sys/types.h \
        sys/un.h \
        sys/wait.h \
        windows.h \
        sys/xattr.h])

dnl Functions.
AC_CHECK_FUNCS([\
        futimens \
        getxattr \
        htonl \
        htons \
        inotify_init1 \
        lgetxattr \
        listxattr \
        llistxattr \
        lsetxattr \
        lremovexattr \
        mknod \
        ntohl \
        ntohs \
        posix_fallocate \
        posix_fadvise \
        realpath \
        removexattr \
        setitimer \
        setxattr \
        sigaction \
        statvfs \
        sync])

dnl tgetent, tputs and UP [sic] are all required.  They come from libtinfo
dnl which is pulled in as a dependency of libncurses.
old_LIBS="$LIBS"
AC_CHECK_LIB([ncurses], [tgetent], [], [
    AC_MSG_ERROR(['ncurses' library not found, or it doesn't contain 'tgetent'])
])
AC_CHECK_LIB([ncurses], [tputs], [], [
    AC_MSG_ERROR(['ncurses' library not found, or it doesn't contain 'tputs'])
])
AC_CHECK_LIB([ncurses], [UP], [], [
    AC_MSG_ERROR(['ncurses' library not found, or it doesn't contain 'UP'])
])
LIBS="$old_LIBS"

dnl For modified printf in the daemon, we need glibc either (old-style)
dnl register_printf_function or (new-style) register_printf_specifier.
AC_CHECK_FUNC([register_printf_specifier],[
        AC_DEFINE([HAVE_REGISTER_PRINTF_SPECIFIER],[1],
                [Define to 1 if you have new-style register_printf_specifier])
        ],[
        AC_CHECK_FUNC([register_printf_function],[
                AC_DEFINE([HAVE_REGISTER_PRINTF_FUNCTION],[1],
                        [Define to 1 if you have old-style register_printf_function])
                ],[
                AC_MSG_FAILURE(
[No support for glibc-style extended printf formatters.

This means you either have a very old glibc (pre-2.0) or you
are using some other libc where this is not supported.])])])

dnl GNU gettext tools (optional).
AC_CHECK_PROG([XGETTEXT],[xgettext],[xgettext],[no])
AC_CHECK_PROG([MSGCAT],[msgcat],[msgcat],[no])
AC_CHECK_PROG([MSGFMT],[msgfmt],[msgfmt],[no])
AC_CHECK_PROG([MSGMERGE],[msgmerge],[msgmerge],[no])

dnl Check they are the GNU gettext tools.
AC_MSG_CHECKING([msgfmt is GNU tool])
if $MSGFMT --version >/dev/null 2>&1 && $MSGFMT --version | grep -q 'GNU gettext'; then
    msgfmt_is_gnu=yes
else
    msgfmt_is_gnu=no
fi
AC_MSG_RESULT([$msgfmt_is_gnu])
AM_CONDITIONAL([HAVE_GNU_GETTEXT],
        [test "x$XGETTEXT" != "xno" && test "x$MSGCAT" != "xno" && test "x$MSGFMT" != "xno" && test "x$MSGMERGE" != "xno" && test "x$msgfmt_is_gnu" != "xno"])

dnl Build the daemon?
AC_MSG_CHECKING([if we should build the daemon])
AC_ARG_ENABLE([daemon],
        [AS_HELP_STRING([--enable-daemon],
          [enable building the daemon @<:@default=yes@:>@])],
        [],
        [enable_daemon=yes])
AM_CONDITIONAL([ENABLE_DAEMON],[test "x$enable_daemon" = "xyes"])
AC_MSG_RESULT([$enable_daemon])

if test "x$enable_daemon" = "xyes"; then
	dnl Install the daemon (for libguestfs live service)
        AC_MSG_CHECKING([if we should install the daemon])
        AC_ARG_ENABLE([install-daemon],
                [AS_HELP_STRING([--enable-install-daemon],
                  [enable installing the daemon under $sbindir @<:@default=no@:>@])],
                [],
                [enable_install_daemon=no])
        AC_MSG_RESULT([$enable_install_daemon])

        dnl Enable valgrind in the daemon.
        AC_MSG_CHECKING([if we should run the daemon under valgrind])
        AC_ARG_ENABLE([valgrind-daemon],
                [AS_HELP_STRING([--enable-valgrind-daemon],
                  [run the daemon under valgrind (developers only) @<:@default=no@:>@])],
                  [],
                  [enable_valgrind_daemon=no])
        AC_MSG_RESULT([$enable_valgrind_daemon])

        if test "x$enable_valgrind_daemon" = "xyes"; then
            AC_DEFINE([VALGRIND_DAEMON],[1],[Define to 1 to run the daemon under valgrind])
            AC_DEFINE_UNQUOTED([VALGRIND_LOG_PATH],["$(pwd)"],[Path to save valgrind log files])
        fi

        dnl Which directory should we put the daemon in?  NOTE: This
        dnl is the "virtual" directory inside the appliance, not the
        dnl install directory for libguestfs live.  Since Fedora 17
        dnl /sbin is a symlink to /usr/sbin.  We have to put the
        dnl daemon into a real (non-symlink) directory.
        dirs="/sbin /usr/sbin /bin /usr/bin"
        AC_MSG_CHECKING([which of $dirs is a real directory])
        for dir in $dirs; do
            parent=`dirname $dir`
            if test ! -L $parent && test -d $parent \
            && test ! -L $dir && test -d $dir
            then
                DAEMON_SUPERMIN_DIR=$dir
                break
            fi
        done
        if test "x$DAEMON_SUPERMIN_DIR" = "x"; then
            AC_MSG_ERROR([non-symlink binary directory not found])
        fi
        AC_MSG_RESULT([$DAEMON_SUPERMIN_DIR])
        AC_SUBST([DAEMON_SUPERMIN_DIR])
fi
AM_CONDITIONAL([INSTALL_DAEMON],[test "x$enable_install_daemon" = "xyes"])
AM_CONDITIONAL([VALGRIND_DAEMON],[test "x$enable_valgrind_daemon" = "xyes"])

dnl Build the appliance?
AC_MSG_CHECKING([if we should build the appliance])
AC_ARG_ENABLE([appliance],
        [AS_HELP_STRING([--enable-appliance],
          [enable building the appliance @<:@default=yes@:>@])],
        [],
        [enable_appliance=yes])
AM_CONDITIONAL([ENABLE_APPLIANCE],[test "x$enable_appliance" = "xyes"])
AC_MSG_RESULT([$enable_appliance])

dnl Check for febootstrap >= 3.0
AC_CHECK_PROG([FEBOOTSTRAP],
              [febootstrap],[febootstrap],[no])

dnl Pass a febootstrap --yum-config option.
AC_MSG_CHECKING([if user requested febootstrap --yum-config option])
AC_ARG_WITH([febootstrap-yum-config],
    [AS_HELP_STRING([--with-febootstrap-yum-config=FILE],
      [pass febootstrap --yum-config option @<:@default=no@:>@])],
    [FEBOOTSTRAP_YUM_CONFIG="$withval"],
    [FEBOOTSTRAP_YUM_CONFIG=no])
AC_MSG_RESULT([$FEBOOTSTRAP_YUM_CONFIG])
AC_SUBST([FEBOOTSTRAP_YUM_CONFIG])

if test "x$enable_appliance" = "xyes"; then
    test "x$FEBOOTSTRAP" = "xno" &&
        AC_MSG_ERROR([febootstrap must be installed])
    dnl febootstrap 2.x did not support the --version parameter
    $FEBOOTSTRAP --version >&AS_MESSAGE_LOG_FD 2>&1 ||
        AC_MSG_ERROR([febootstrap >= 3.0 must be installed, your version is too old])
fi

dnl Which distro?
dnl
dnl This used to be Very Important but is now just used to select
dnl which packages to install in the appliance, since the package
dnl names vary slightly across distros.  (See
dnl appliance/packagelist.in and appliance/excludelist.in)
AC_MSG_CHECKING([which Linux distro for package names])
DISTRO=REDHAT
if test -f /etc/debian_version; then
    DISTRO=DEBIAN
    if grep -q 'DISTRIB_ID=Ubuntu' /etc/lsb-release 2>&AS_MESSAGE_LOG_FD; then
        DISTRO=UBUNTU
    fi
fi
if test -f /etc/arch-release; then
    DISTRO=ARCHLINUX
fi
AC_MSG_RESULT([$DISTRO])
AC_SUBST([DISTRO])

dnl Check for rpcgen and XDR library.  rpcgen is optional.
AC_CHECK_PROG([RPCGEN],[rpcgen],[rpcgen],[no])
AM_CONDITIONAL([HAVE_RPCGEN],[test "x$RPCGEN" != "xno"])
AC_CHECK_LIB([portablexdr],[xdrmem_create],[],[
        AC_SEARCH_LIBS([xdrmem_create],[rpc xdr nsl])
        ])

dnl Check for Augeas (optional).
PKG_CHECK_MODULES([AUGEAS], [augeas],
        [AC_SUBST([AUGEAS_CFLAGS])
         AC_SUBST([AUGEAS_LIBS])
         AC_DEFINE([HAVE_AUGEAS],[1],[Define to 1 if you have Augeas])

         old_LIBS="$LIBS"
         LIBS="$LIBS $AUGEAS_LIBS"
         dnl Check for functions not available in earlier versions of Augeas.
         AC_CHECK_FUNCS([aug_load aug_defvar aug_defnode])
         LIBS="$old_LIBS"
        ],
        [AC_MSG_WARN([augeas not found, some core features will be disabled])])

dnl Check for libselinux (optional).
AC_CHECK_HEADERS([selinux/selinux.h])
AC_CHECK_LIB([selinux],[setexeccon],[
        have_libselinux="$ac_cv_header_selinux_selinux_h"
        SELINUX_LIB="-lselinux"

        old_LIBS="$LIBS"
        LIBS="$LIBS $SELINUX_LIB"
        AC_CHECK_FUNCS([setcon getcon])
        LIBS="$old_LIBS"

        ],[have_libselinux=no])
if test "x$have_libselinux" = "xyes"; then
        AC_DEFINE([HAVE_LIBSELINUX],[1],[Define to 1 if you have libselinux])
fi
AC_SUBST([SELINUX_LIB])

dnl Check for systemtap/DTrace userspace probes (optional).
dnl Since the probe points break under clang, allow this to be disabled.
AC_ARG_ENABLE([probes],
        AS_HELP_STRING([--disable-probes], [Disable systemtap/DTrace userspace probes]),
        [],
        [enable_probes=yes])
AS_IF([test "x$enable_probes" != "xno"],[
    dnl http://sourceware.org/systemtap/wiki/AddingUserSpaceProbingToApps
    AC_CHECK_HEADERS([sys/sdt.h])
    dnl AC_CHECK_PROG([DTRACE],[dtrace],[dtrace],[no])
    AS_IF([test "x$ac_cv_header_sys_sdt_h" = "xyes"],[
        AC_DEFINE([ENABLE_PROBES],[1],[enable systemtap/DTrace userspace probes])
    ])
])

dnl Check for cpio which isn't in the default Pardus install amazingly.
AC_CHECK_PROG([CPIO],[cpio],[cpio],[no])
test "x$CPIO" = "xno" &&
     AC_MSG_ERROR([cpio must be installed])

dnl Check for gperf.
AC_CHECK_PROG([GPERF],[gperf],[gperf],[no])
test "x$GPERF" = "xno" &&
     AC_MSG_ERROR([gperf must be installed])

dnl Check for pod2man, pod2text, pod2html.
AC_CHECK_PROG([POD2MAN],[pod2man],[pod2man],[no])
test "x$POD2MAN" = "xno" &&
     AC_MSG_ERROR([pod2man must be installed])
AC_CHECK_PROG([POD2TEXT],[pod2text],[pod2text],[no])
test "x$POD2TEXT" = "xno" &&
     AC_MSG_ERROR([pod2text must be installed])
AC_CHECK_PROG([POD2HTML],[pod2html],[pod2html],[no])
test "x$POD2HTML" = "xno" &&
     AC_MSG_ERROR([pod2html must be installed])

dnl Check if pod2man, pod2text take --stderr and -u options (not in RHEL 5).
AC_MSG_CHECKING([if pod2man takes --stderr option])
if "$POD2MAN" --stderr >&AS_MESSAGE_LOG_FD 2>&1; then
    AC_MSG_RESULT([yes])
    POD2_STDERR_OPTION="--stderr"
else
    AC_MSG_RESULT([no])
    POD2_STDERR_OPTION=""
fi
AC_SUBST([POD2_STDERR_OPTION])

AC_MSG_CHECKING([if pod2man takes -u option])
if "$POD2MAN" -u >&AS_MESSAGE_LOG_FD 2>&1; then
    AC_MSG_RESULT([yes])
    POD2_UTF8_OPTION="-u"
else
    AC_MSG_RESULT([no])
    POD2_UTF8_OPTION=""
fi
AC_SUBST([POD2_UTF8_OPTION])

dnl Check for genisoimage.
AC_PATH_PROGS([GENISOIMAGE],[genisoimage],[no],
        [$PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin])
test "x$GENISOIMAGE" = "xno" && AC_MSG_ERROR([genisoimage must be installed])

dnl Check for optional xmllint.
AC_CHECK_PROG([XMLLINT],[xmllint],[xmllint],[no])
AM_CONDITIONAL([HAVE_XMLLINT],[test "x$XMLLINT" != "xno"])

dnl po4a for translating man pages and POD files (optional).
AC_CHECK_PROG([PO4A],[po4a],[po4a],[no])
AM_CONDITIONAL([HAVE_PO4A], [test "x$PO4A" != "xno"])

dnl Check for db_dump, db_load (optional).
AC_CHECK_PROGS([DB_DUMP],
               [db_dump db4_dump db4.8_dump db4.7_dump db4.6_dump],[no])
AC_CHECK_PROGS([DB_LOAD],
               [db_load db4_load db4.8_load db4.7_load db4.6_load],[no])
if test "x$DB_DUMP" != "xno"; then
    AC_DEFINE_UNQUOTED([DB_DUMP],["$DB_DUMP"],[Name of db_dump program.])
fi
if test "x$DB_LOAD" != "xno"; then
    AC_DEFINE_UNQUOTED([DB_LOAD],["$DB_LOAD"],[Name of db_load program.])
fi

dnl Check for netpbm programs (optional).
AC_CHECK_PROGS([PBMTEXT],[pbmtext],[no])
AC_CHECK_PROGS([PNMTOPNG],[pnmtopng],[no])
AC_CHECK_PROGS([BMPTOPNM],[bmptopnm],[no])
AC_CHECK_PROGS([PAMCUT],[pamcut],[no])
if test "x$PBMTEXT" != "xno"; then
    AC_DEFINE_UNQUOTED([PBMTEXT],["$PBMTEXT"],[Name of pbmtext program.])
fi
if test "x$PNMTOPNG" != "xno"; then
    AC_DEFINE_UNQUOTED([PNMTOPNG],["$PNMTOPNG"],[Name of pnmtopng program.])
fi
if test "x$BMPTOPNM" != "xno"; then
    AC_DEFINE_UNQUOTED([BMPTOPNM],["$BMPTOPNM"],[Name of bmptopnm program.])
fi
if test "x$PAMCUT" != "xno"; then
    AC_DEFINE_UNQUOTED([PAMCUT],["$PAMCUT"],[Name of pamcut program.])
fi

dnl Check for icoutils (optional).
AC_CHECK_PROGS([WRESTOOL],[wrestool],[no])
if test "x$WRESTOOL" != "xno"; then
    AC_DEFINE_UNQUOTED([WRESTOOL],["$WRESTOOL"],[Name of wrestool program.])
fi

dnl Check for QEMU for running binaries on this $host_cpu, fall
dnl back to basic 'qemu'.  Allow the user to override it.
default_qemu="qemu-kvm kvm qemu-system-$host_cpu qemu"
AC_ARG_WITH([qemu],
        [AS_HELP_STRING([--with-qemu],
          [set default QEMU binary @<:@default=[qemu-kvm] qemu-system-<host> qemu@:>@])],
        [],
        [with_qemu="$default_qemu"])
AC_PATH_PROGS([QEMU],[$with_qemu],[no],
        [$PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/libexec])
test "x$QEMU" = "xno" && AC_MSG_ERROR([qemu must be installed])
AC_DEFINE_UNQUOTED([QEMU],["$QEMU"],[Location of qemu binary.])

dnl Does the user wish to specify -M, -cpu or other qemu options?
AC_MSG_CHECKING([if the user specified extra options for qemu command line])
AC_ARG_WITH([qemu-options],
    [AS_HELP_STRING([--with-qemu-options="-M ... -cpu ... etc"],
        [pass extra options for qemu command line @<:@default=no@:>@])],
    [QEMU_OPTIONS="$withval"],
    [QEMU_OPTIONS=no])
AS_IF([test "x$QEMU_OPTIONS" = "xno"],[
    AC_MSG_RESULT([no])
    QEMU_OPTIONS=
],[
    AC_MSG_RESULT([$QEMU_OPTIONS])
])
AC_DEFINE_UNQUOTED([QEMU_OPTIONS],["$QEMU_OPTIONS"],
                   [extra options for qemu command line])

dnl Check that the chosen qemu has virtio-serial support.
dnl For historical reasons this can be disabled by setting vmchannel_test=no.
if test "x$vmchannel_test" != "xno"; then
    AC_MSG_CHECKING([that $QEMU -help works])
    if $QEMU -help >&AS_MESSAGE_LOG_FD 2>&1; then
        AC_MSG_RESULT([yes])
    else
        AC_MSG_RESULT([no])
        AC_MSG_FAILURE(
[$QEMU -help: command failed.

This could be a very old version of qemu, or qemu might not be
working.
])
    fi

    AS_IF([test "x$QEMU_OPTIONS" = "x"],[
        dnl qemu 0.15 was released with broken support for '-machine',
        dnl requiring you to add the machine type: '-machine pc,[...]'.
        dnl The problem is that 'pc' is only applicable for PC-like
        dnl hardware, so we cannot do this as a general solution.  Since
        dnl qemu 0.15, this problem has been fixed so now the default
        dnl machine type is chosen (qemu commit 2645c6dcaf6ea2a51a).
        dnl
        dnl We need to work out if this qemu is the broken version, so we
        dnl can add 'pc' just for this broken version.
        dnl
        dnl Note that old qemu didn't support the '-machine' option at all.
        dnl
        dnl We use the -kernel option for testing this, because this option
        dnl is processed very late, after qemu has set up the machine.
        AC_MSG_CHECKING([for broken '-machine accel=tcg' option in $QEMU])
        LC_ALL=C $QEMU -nographic -machine accel=tcg -kernel /NO_SUCH_FILE \
             > config1.tmp 2>&1
        LC_ALL=C $QEMU -nographic -machine pc,accel=tcg -kernel /NO_SUCH_FILE \
             > config2.tmp 2>&1
        if cmp -s config1.tmp config2.tmp; then
            AC_MSG_RESULT([no])
        else
            AC_MSG_RESULT([yes])
            AC_DEFINE([QEMU_MACHINE_TYPE_IS_BROKEN],[1],[qemu -machine accel=tcg option is broken (in qemu 0.15 only)])
        fi
        rm config1.tmp config2.tmp

        dnl See if the '-machine [pc,]accel=tcg' option is required in
        dnl order to run the virtio-serial test below.  This happens when
        dnl we run qemu-kvm inside a VM without forcing TCG:
        dnl
        dnl   Could not access KVM kernel module: No such file or directory
        dnl   failed to initialize KVM: No such file or directory
        dnl   No accelerator found!
        AC_MSG_CHECKING([if -machine @<:@pc,@:>@accel=tcg option is required to test virtio-serial feature])
        if $QEMU -nographic -device \? >/dev/null 2>&1; then
            :
        elif $QEMU -machine accel=tcg -nographic -device \? >/dev/null 2>&1; then
            QEMU_OPTIONS_FOR_TEST="-machine accel=tcg"
        elif $QEMU -machine pc,accel=tcg -nographic -device \? >/dev/null 2>&1; then
            QEMU_OPTIONS_FOR_TEST="-machine pc,accel=tcg"
        # else nothing ... it'll fail below.
        fi
        AC_MSG_RESULT([$QEMU_OPTIONS_FOR_TEST])
    ])

    AC_MSG_CHECKING([for virtio-serial support in $QEMU])
    if $QEMU $QEMU_OPTIONS $QEMU_OPTIONS_FOR_TEST -nographic -device \? 2>&1 | grep -sq virtio-serial; then
        AC_MSG_RESULT([yes])
    else
        AC_MSG_RESULT([no])
        AC_MSG_FAILURE(
[I did not find virtio-serial support in
$QEMU.

virtio-serial support in qemu or KVM is essential for libguestfs
to operate.

Usually this means that you have to install a newer version of qemu
and/or KVM.  Please read the relevant section in the README file for
more information about this.

You can override this test by setting the environment variable
vmchannel_test=no

However if you don't have the right support in your qemu, then this
just delays the pain.

If I am using the wrong qemu or you want to compile qemu from source
and install it in another location, then you should configure with
the --with-qemu option.
])
    fi
fi

dnl Set default drive interface used by the guestfs_add_drive_opts call
dnl ('-drive ...,if=...' option to qemu).
dnl
dnl If you encounter performance problems with virtio (RHBZ#509383)
dnl then try '--with-drive-if=ide'.
AC_ARG_WITH([drive-if],
        [AS_HELP_STRING([--with-drive-if],
          [set default driver (ide|scsi|virtio) @<:@default=virtio@:>@])],
        [],
        [with_drive_if=virtio])
AC_DEFINE_UNQUOTED([DRIVE_IF],["$with_drive_if"],[Default drive interface.])

dnl Set interface used by the network.  Normally you should
dnl leave this at the default (virtio-net-pci) but you can use the
dnl alternative (ne2k_pci) because of bugs in virtio networking
dnl eg. https://bugzilla.redhat.com/show_bug.cgi?id=516022
AC_ARG_WITH([net-if],
        [AS_HELP_STRING([--with-net-if],
          [set default net driver (virtio-net-pci|ne2k_pci) @<:@default=virtio-net-pci@:>@])],
        [],
        [with_net_if=virtio-net-pci])
AC_DEFINE_UNQUOTED([NET_IF],["$with_net_if"],[Default network interface.])

dnl Enable packet dumps when in verbose mode.  This generates lots
dnl of debug info, only useful for people debugging the RPC mechanism.
AC_ARG_ENABLE([packet-dump],
        [AS_HELP_STRING([--enable-packet-dump],
          [enable packet dumps in verbose mode @<:@default=no@:>@])],
        [AC_DEFINE([ENABLE_PACKET_DUMP],[1],[Enable packet dumps in verbose mode.])],
        [])

dnl Readline.
AC_ARG_WITH([readline],
    [AS_HELP_STRING([--with-readline],
        [support fancy command line editing @<:@default=check@:>@])],
    [],
    [with_readline=check])

LIBREADLINE=
AS_IF([test "x$with_readline" != xno],
    [AC_CHECK_LIB([readline], [main],
        [AC_SUBST([LIBREADLINE], ["-lreadline -lncurses"])
         AC_DEFINE([HAVE_LIBREADLINE], [1],
                   [Define if you have libreadline])
        ],
        [if test "x$with_readline" != xcheck; then
         AC_MSG_FAILURE(
             [--with-readline was given, but test for readline failed])
         fi
        ], -lncurses)
     old_LIBS="$LIBS"
     LIBS="$LIBS $LIBREADLINE"
     AC_CHECK_FUNCS([append_history completion_matches rl_completion_matches])
     LIBS="$old_LIBS"
    ])

dnl Check for PCRE (required)
PKG_CHECK_MODULES([PCRE], [libpcre])

dnl libmagic (highly recommended)
AC_CHECK_LIB([magic],[magic_file],
        [AC_CHECK_HEADER([magic.h],
                [AC_SUBST([MAGIC_LIBS], ["-lmagic"])
                 AC_DEFINE([HAVE_LIBMAGIC],[1],[libmagic found at compile time.])
                ], [])
        ],
        [AC_MSG_WARN([libmagic not found, some core features will be disabled])])

dnl libvirt (highly recommended)
PKG_CHECK_MODULES([LIBVIRT], [libvirt],
        [AC_SUBST([LIBVIRT_CFLAGS])
         AC_SUBST([LIBVIRT_LIBS])
         AC_DEFINE([HAVE_LIBVIRT],[1],[libvirt found at compile time.])
        ],
        [AC_MSG_WARN([libvirt not found, some core features will be disabled])])
AM_CONDITIONAL([HAVE_LIBVIRT],[test "x$LIBVIRT_LIBS" != "x"])

dnl libxml2 (highly recommended)
PKG_CHECK_MODULES([LIBXML2], [libxml-2.0],
        [AC_SUBST([LIBXML2_CFLAGS])
         AC_SUBST([LIBXML2_LIBS])
         AC_DEFINE([HAVE_LIBXML2],[1],[libxml2 found at compile time.])
        ],
        [AC_MSG_WARN([libxml2 not found, some core features will be disabled])])
AM_CONDITIONAL([HAVE_LIBXML2],[test "x$LIBXML2_LIBS" != "x"])

dnl libconfig (highly recommended)
PKG_CHECK_MODULES([LIBCONFIG], [libconfig],
        [AC_SUBST([LIBCONFIG_CFLAGS])
         AC_SUBST([LIBCONFIG_LIBS])
         AC_DEFINE([HAVE_LIBCONFIG],[1],[libconfig found at compile time.])
        ],
        [AC_MSG_WARN([libconfig not found, some features will be disabled])])
AM_CONDITIONAL([HAVE_LIBCONFIG],[test "x$LIBCONFIG_LIBS" != "x"])

dnl hivex library (highly recommended)
dnl This used to be a part of libguestfs, but was spun off into its
dnl own separate upstream project in libguestfs 1.0.85.
PKG_CHECK_MODULES([HIVEX], [hivex],
        [AC_SUBST([HIVEX_CFLAGS])
         AC_SUBST([HIVEX_LIBS])
         AC_DEFINE([HAVE_HIVEX],[1],[hivex library found at compile time.])
        ],
        [AC_MSG_WARN([hivex not found, some core features will be disabled])])
AM_CONDITIONAL([HAVE_HIVEX],[test "x$HIVEX_LIBS" != "x"])

dnl FUSE is optional to build the FUSE module.
AC_ARG_ENABLE([fuse],
        AS_HELP_STRING([--disable-fuse], [Disable FUSE (guestmount) support]),
        [],
        [enable_fuse=yes])
AS_IF([test "x$enable_fuse" != "xno"],
        [PKG_CHECK_MODULES([FUSE],[fuse],
            [AC_SUBST([FUSE_CFLAGS])
             AC_SUBST([FUSE_LIBS])
             AC_DEFINE([HAVE_FUSE],[1],[Define to 1 if you have FUSE])],
            [enable_fuse=no
             AC_MSG_WARN([FUSE library and headers are missing, so optional FUSE module won't be built])
            ])
        ])
AM_CONDITIONAL([HAVE_FUSE],[test "x$enable_fuse" != "xno"])

dnl Check for C++ (optional, we just use this to test the header works).
AC_PROG_CXX

dnl The C++ compiler test is pretty useless because even if it fails
dnl it sets CXX=g++.  So test the compiler actually works.
AM_CONDITIONAL([HAVE_CXX], [$CXX --version])

dnl If valgrind is present (it's not required), check whether or not
dnl it supports the new 'valgrind --vgdb' option.
AC_CHECK_PROG([VALGRIND],[valgrind],[valgrind],[no])
AS_IF([test "x$VALGRIND" != "xno"],[
    AC_MSG_CHECKING([if $VALGRIND supports the --vgdb option])
    if $VALGRIND --help | grep -sq -- --vgdb; then
        AC_MSG_RESULT([yes])
        AC_SUBST([VALGRIND_NO_VGDB],[--vgdb=no])
    else
        AC_MSG_RESULT([no])
        AC_SUBST([VALGRIND_NO_VGDB],[])
    fi
])

dnl Check for OCaml (optional, for OCaml bindings and OCaml tools).
OCAMLC=no
OCAMLFIND=no
AC_ARG_ENABLE([ocaml],
        AS_HELP_STRING([--disable-ocaml], [Disable OCaml language bindings]),
        [],
        [enable_ocaml=yes])
AS_IF([test "x$enable_ocaml" != "xno"],
        [dnl OCAMLC and OCAMLFIND have to be unset first, otherwise
         dnl AC_CHECK_TOOL (inside AC_PROG_OCAML) will not look.
         OCAMLC=
         OCAMLFIND=
         AC_PROG_OCAML
         AC_PROG_FINDLIB
        ])
AM_CONDITIONAL([HAVE_OCAML],
               [test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno"])
AM_CONDITIONAL([HAVE_OCAMLDOC],
               [test "x$OCAMLDOC" != "xno"])

OCAML_PKG_gettext=no
AS_IF([test "x$OCAMLC" != "xno"],[
    dnl Check for ocaml-gettext package to translate OCaml tools.
    AC_CHECK_OCAML_PKG(gettext)

    dnl Write gettext modules for each OCaml tool.  If OCaml gettext
    dnl is not available then we write dummy functions.
    for program in resize sparsify sysprep; do
        output=$program/${program}_gettext.ml
        AC_MSG_NOTICE([creating $output])
        rm -f $output

        cat <<EOF > $output
(* This file is generated automatically by ./configure. *)

(** Gettext functions for virt-$program.

    The ${program}_gettext module provides gettext functions for
    $program, or dummy functions if ocaml-gettext was not available
    at configure time.

    {b Note}: Don't translate debug strings, or strings which are
    meant to be read/written only by machine.

    There are two ways to translate constant strings in OCaml programs.

    For ordinary strings, replace [["string"]] with [[s_"string"]].  Since
    this is a function call to a function called [[s_]], you may have
    to put parentheses around the expression.

    For format strings, use:

{v
  printf (f_"zeroing filesystem %s") filename;
v}

    Note for format strings, the parentheses are almost always required,
    and they just go around the [[(f_"string")]], {i not} around the other
    arguments of the printf function.

    At build time, a program parses the OCaml code into an abstract
    syntax tree and statically determines all calls to the special
    [[s_]] and [[f_]] functions, which means: (a) You can be very loose
    with syntax, unlike ordinary xgettext, but (b) you cannot rename
    these functions.
*)

EOF

        if test "x$OCAML_PKG_gettext" != "xno"; then
            # ocaml-gettext available: real module.
            cat <<EOF >>$output
module Gettext = Gettext.Program (
  struct
    let textdomain = "$PACKAGE_NAME"
    let codeset = None
    let dir = None
    let dependencies = [[]]
  end
) (GettextStub.Native)
EOF
        else
            # No gettext: module containing dummy gettext functions.
            cat <<EOF >>$output
module Gettext = struct
  external s_ : string -> string = "%identity"
  external f_ : ('a, 'b, 'c, 'd, 'e, 'f) format6
    -> ('a, 'b, 'c, 'd, 'e, 'f) format6
    = "%identity"
  let sn_ : string -> string -> int -> string
    = fun s p n -> if n = 1 then s else p
  let fn_ : ('a, 'b, 'c, 'd, 'e, 'f) format6
    -> ('a, 'b, 'c, 'd, 'e, 'f) format6
    -> int -> ('a, 'b, 'c, 'd, 'e, 'f) format6
    = fun s p n -> if n = 1 then s else p
end
EOF
        fi

        chmod -w $output
    done
])
AM_CONDITIONAL([HAVE_OCAML_PKG_GETTEXT],
        [test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && test "x$OCAML_PKG_gettext" != "xno"])

AC_CHECK_PROG([OCAML_GETTEXT],[ocaml-gettext],[ocaml-gettext],[no])
AM_CONDITIONAL([HAVE_OCAML_GETTEXT],
        [test "x$OCAMLC" != "xno" && test "x$OCAMLFIND" != "xno" && test "x$OCAML_PKG_gettext" != "xno" && test "x$OCAML_GETTEXT" != "xno"])

dnl Check for Perl (optional, for Perl bindings and Perl tools).
PERL=no
AC_ARG_ENABLE([perl],
        AS_HELP_STRING([--disable-perl], [Disable Perl language bindings]),
        [],
        [enable_perl=yes])
AS_IF([test "x$enable_perl" != "xno"],
        [
        PERL=
        AC_CHECK_PROG([PERL],[perl],[perl],[no])

        dnl Check for Perl modules that must be present to compile and
        dnl test the Perl bindings.
        missing_perl_modules=no
        for pm in Test::More ExtUtils::MakeMaker; do
            AC_MSG_CHECKING([for $pm])
            if ! perl -M$pm -e1 >&AS_MESSAGE_LOG_FD 2>&1; then
                AC_MSG_RESULT([no])
                missing_perl_modules=yes
            else
                AC_MSG_RESULT([yes])
            fi
        done
        if test "x$missing_perl_modules" = "xyes"; then
            AC_MSG_WARN([some Perl modules required to compile or test the Perl bindings are missing])
        fi
        ])
AM_CONDITIONAL([HAVE_PERL],
    [test "x$PERL" != "xno" && test "x$missing_perl_modules" != "xyes"])

dnl Check for Python (optional, for Python bindings).
PYTHON_PREFIX=
PYTHON_VERSION=
PYTHON_INCLUDEDIR=
PYTHON_INSTALLDIR=

AC_ARG_ENABLE([python],
        AS_HELP_STRING([--disable-python], [Disable Python language bindings]),
        [],
        [enable_python=yes])
AS_IF([test "x$enable_python" != "xno"],
        [
        AC_CHECK_PROG([PYTHON],[python],[python],[no])

        if test "x$PYTHON" != "xno"; then
	    AC_MSG_CHECKING([Python prefix])
            PYTHON_PREFIX=`$PYTHON -c "import sys; print (sys.prefix)"`
	    AC_MSG_RESULT([$PYTHON_PREFIX])

	    AC_MSG_CHECKING([Python version])
            PYTHON_VERSION_MAJOR=`$PYTHON -c "import sys; print (sys.version_info@<:@0@:>@)"`
            PYTHON_VERSION_MINOR=`$PYTHON -c "import sys; print (sys.version_info@<:@1@:>@)"`
            PYTHON_VERSION="$PYTHON_VERSION_MAJOR.$PYTHON_VERSION_MINOR"
	    AC_MSG_RESULT([$PYTHON_VERSION])

            AC_MSG_CHECKING([for Python include path])
            if test -z "$PYTHON_INCLUDEDIR"; then
                python_path=`$PYTHON -c "import distutils.sysconfig; \
                                         print (distutils.sysconfig.get_python_inc ());"`
                PYTHON_INCLUDEDIR=$python_path
            fi
            AC_MSG_RESULT([$PYTHON_INCLUDEDIR])

            AC_ARG_WITH([python-installdir],
                        [AS_HELP_STRING([--with-python-installdir],
			                [directory to install python modules @<:@default=check@:>@])],
			[PYTHON_INSTALLDIR="$withval"
			AC_MSG_NOTICE([Python install dir $PYTHON_INSTALLDIR])],
			[PYTHON_INSTALLDIR=check])

	    if test "x$PYTHON_INSTALLDIR" = "xcheck"; then
	        PYTHON_INSTALLDIR=
                AC_MSG_CHECKING([for Python site-packages path])
                if test -z "$PYTHON_INSTALLDIR"; then
                    PYTHON_INSTALLDIR=`$PYTHON -c "import distutils.sysconfig; \
                                                   print (distutils.sysconfig.get_python_lib(1,0));"`
                fi
                AC_MSG_RESULT([$PYTHON_INSTALLDIR])
            fi

            dnl Look for some optional symbols in libpython.
            old_LIBS="$LIBS"

            PYTHON_BLDLIBRARY=`$PYTHON -c "import distutils.sysconfig; \
                                           print (distutils.sysconfig.get_config_var('BLDLIBRARY'))"`
            AC_CHECK_LIB([c],[PyCapsule_New],
                         [AC_DEFINE([HAVE_PYCAPSULE_NEW],1,
                                    [Found PyCapsule_New in libpython])],
                         [],[$PYTHON_BLDLIBRARY])
            AC_CHECK_LIB([c],[PyString_AsString],
                         [AC_DEFINE([HAVE_PYSTRING_ASSTRING],1,
                                    [Found PyString_AsString in libpython])],
                         [],[$PYTHON_BLDLIBRARY])

            LIBS="$old_LIBS"
        fi

        AC_SUBST(PYTHON_PREFIX)
        AC_SUBST(PYTHON_VERSION)
        AC_SUBST(PYTHON_INCLUDEDIR)
        AC_SUBST(PYTHON_INSTALLDIR)
        ])
AM_CONDITIONAL([HAVE_PYTHON],
    [test "x$PYTHON" != "xno" && test "x$PYTHON_INCLUDEDIR" != "x" && test "x$PYTHON_INSTALLDIR" != "x"])

dnl Check for Ruby and rake (optional, for Ruby bindings).
AC_ARG_ENABLE([ruby],
        AS_HELP_STRING([--disable-ruby], [Disable Ruby language bindings]),
        [],
        [enable_ruby=yes])
AS_IF([test "x$enable_ruby" != "xno"],
        [
        AC_CHECK_PROG([RUBY],[ruby],[ruby],[no])
        AC_CHECK_PROG([RAKE],[rake],[rake],[no])
        AC_CHECK_LIB([ruby],[ruby_init],[HAVE_LIBRUBY=1],[HAVE_LIBRUBY=0])
        AC_SUBST([RAKE])
        ])
AM_CONDITIONAL([HAVE_RUBY],
    [test "x$RAKE" != "xno" && test -n "$HAVE_LIBRUBY"])

dnl Check for Java.
AC_ARG_WITH(java_home,
    [AS_HELP_STRING([--with-java-home],
        [specify path to JDK directory @<:@default=check@:>@])],
    [],
    [with_java_home=check])

if test "x$with_java_home" != "xno"; then
    if test "x$with_java_home" != "xyes" && test "x$with_java_home" != "xcheck"
    then
        # Reject unsafe characters in $JAVA_HOME
        jh_lf='
'
        case $JAVA_HOME in
          *[\\\"\#\$\&\'\`$jh_lf\ \	]*)
            AC_MSG_FAILURE([unsafe \$JAVA_HOME directory (use --with-java-home=no to disable Java support)]);;
        esac
        if test -d "$with_java_home"; then
            JAVA_HOME="$with_java_home"
        else
            AC_MSG_FAILURE([$with_java_home is not a directory (use --with-java-home=no to disable Java support)])
        fi
    fi

    if test "x$JAVA_HOME" = "x"; then
        # Look for Java in some likely locations.
        for d in \
            /usr/lib/jvm/java \
            /usr/lib/jvm/java-6-openjdk
        do
            if test -d $d && test -f $d/bin/java; then
                JAVA_HOME=$d
                break
            fi
        done
    fi

    if test "x$JAVA_HOME" != "x"; then
        AC_MSG_CHECKING(for JDK in $JAVA_HOME)
        if test ! -x "$JAVA_HOME/bin/java"; then
            AC_MSG_ERROR([missing $JAVA_HOME/bin/java binary (use --with-java-home=no to disable Java support)])
        else
            JAVA="$JAVA_HOME/bin/java"
        fi
        if test ! -x "$JAVA_HOME/bin/javac"; then
            AC_MSG_ERROR([missing $JAVA_HOME/bin/javac binary])
        else
            JAVAC="$JAVA_HOME/bin/javac"
        fi
        if test ! -x "$JAVA_HOME/bin/javah"; then
            AC_MSG_ERROR([missing $JAVA_HOME/bin/javah binary])
        else
            JAVAH="$JAVA_HOME/bin/javah"
        fi
        if test ! -x "$JAVA_HOME/bin/javadoc"; then
            AC_MSG_ERROR([missing $JAVA_HOME/bin/javadoc binary])
        else
            JAVADOC="$JAVA_HOME/bin/javadoc"
        fi
        if test ! -x "$JAVA_HOME/bin/jar"; then
            AC_MSG_ERROR([missing $JAVA_HOME/bin/jar binary])
        else
            JAR="$JAVA_HOME/bin/jar"
        fi
        java_version=`$JAVA -version 2>&1 | grep "java version"`
        AC_MSG_RESULT(found $java_version in $JAVA_HOME)

        dnl Find jni.h.
        AC_MSG_CHECKING([for jni.h])
        if test -f "$JAVA_HOME/include/jni.h"; then
            JNI_CFLAGS="-I$JAVA_HOME/include"
        else
            if test "`find $JAVA_HOME -name jni.h`" != ""; then
                head=`find $JAVA_HOME -name jni.h | tail -1`
                dir=`dirname "$head"`
                JNI_CFLAGS="-I$dir"
            else
                AC_MSG_FAILURE([missing jni.h header file])
            fi
        fi
        AC_MSG_RESULT([$JNI_CFLAGS])

        dnl Find jni_md.h.
        AC_MSG_CHECKING([for jni_md.h])
        case "$build_os" in
        *linux*) system="linux" ;;
        *SunOS*) system="solaris" ;;
        *cygwin*) system="win32" ;;
        *) system="$build_os" ;;
        esac
        if test -f "$JAVA_HOME/include/$system/jni_md.h"; then
            JNI_CFLAGS="$JNI_CFLAGS -I$JAVA_HOME/include/$system"
        else
            if test "`find $JAVA_HOME -name jni_md.h`" != ""; then
                head=`find $JAVA_HOME -name jni_md.h | tail -1`
                dir=`dirname "$head"`
                JNI_CFLAGS="$JNI_CFLAGS -I$dir"
            else
                AC_MSG_FAILURE([missing jni_md.h header file])
            fi
        fi
        AC_MSG_RESULT([$JNI_CFLAGS])

        dnl Need extra version flag?
        AC_MSG_CHECKING([extra javac flags])
        JAVAC_FLAGS=
        javac_version=`$JAVAC -version 2>&1`
        case "$javac_version" in
        *Eclipse*)
            JAVAC_FLAGS="-source 1.5" ;;
        esac
        AC_MSG_RESULT([$JAVAC_FLAGS])

        dnl Extra lint flags?
        AC_MSG_CHECKING([extra javac lint flags])
        if $JAVAC -X >/dev/null 2>&1 && \
           $JAVAC -X 2>&1 | grep -q -- '-Xlint:.*all'; then
            AC_MSG_RESULT([-Xlint:all])
            JAVAC_FLAGS="$JAVAC_FLAGS -Xlint:all"
        else
            AC_MSG_RESULT([no])
        fi

        dnl Where to install jarfiles, jnifiles
        if test -z $JAR_INSTALL_DIR; then
            JAR_INSTALL_DIR=\${prefix}/share/java
        fi
        if test -z $JNI_INSTALL_DIR; then
            JNI_INSTALL_DIR=\${libdir}
        fi

        dnl JNI version.
        jni_major_version=`echo "$VERSION" | awk -F. '{print $1}'`
        jni_minor_version=`echo "$VERSION" | awk -F. '{print $2}'`
        jni_micro_version=`echo "$VERSION" | awk -F. '{print $3}'`
        JNI_VERSION_INFO=`expr "$jni_major_version" + "$jni_minor_version"`":$jni_micro_version:$jni_minor_version"
    fi
fi

AC_SUBST(JAVA_HOME)
AC_SUBST(JAVA)
AC_SUBST(JAVAC)
AC_SUBST(JAVAH)
AC_SUBST(JAVADOC)
AC_SUBST(JAR)
AC_SUBST(JNI_CFLAGS)
AC_SUBST(JAVAC_FLAGS)
AC_SUBST(JAR_INSTALL_DIR)
AC_SUBST(JNI_INSTALL_DIR)
AC_SUBST(JNI_VERSION_INFO)

AM_CONDITIONAL([HAVE_JAVA],[test -n "$JAVAC"])

dnl Check for Haskell (GHC).
GHC=no
AC_ARG_ENABLE([haskell],
        AS_HELP_STRING([--disable-haskell], [Disable Haskell language bindings]),
        [],
        [enable_haskell=yes])
AS_IF([test "x$enable_haskell" != "xno"],
        [
        GHC=
        AC_CHECK_PROG([GHC],[ghc],[ghc],[no])
        ])
AM_CONDITIONAL([HAVE_HASKELL],
    [test "x$GHC" != "xno"])

dnl PHP
PHP=no
AC_ARG_ENABLE([php],
        AS_HELP_STRING([--disable-php], [Disable PHP language bindings]),
        [],
        [enable_php=yes])
AS_IF([test "x$enable_php" != "xno"],
        [
        PHP=
        AC_CHECK_PROG([PHP],[php],[php],[no])
        AC_CHECK_PROG([PHPIZE],[phpize],[phpize],[no])
        ])
AM_CONDITIONAL([HAVE_PHP], [test "x$PHP" != "xno" && test "x$PHPIZE" != "xno"])

dnl Erlang
ERLANG=no
AC_ARG_ENABLE([erlang],
    AS_HELP_STRING([--disable-erlang], [Disable Erlang language bindings]),
         [],
         [enable_erlang=yes])
# NB: Don't use AS_IF here: it doesn't work.
if test "x$enable_erlang" != "xno"; then
        ERLANG=
        AC_ERLANG_PATH_ERLC([no])

        if test "x$ERLC" != "xno"; then
            AC_ERLANG_CHECK_LIB([erl_interface], [],
                                [AC_MSG_FAILURE([Erlang erl_interface library not installed.  Use --disable-erlang to disable.])])
            AC_ERLANG_SUBST_LIB_DIR
        fi
fi
AM_CONDITIONAL([HAVE_ERLANG], [test "x$ERLANG" != "xno" && test "x$ERLC" != "xno"])

dnl Check for Perl modules needed by Perl virt tools (virt-df, etc.)
AS_IF([test "x$PERL" != "xno"],
        [
        missing_perl_modules=no
        for pm in Pod::Usage Getopt::Long Sys::Virt Data::Dumper Locale::TextDomain Win::Hivex Win::Hivex::Regedit String::ShellQuote; do
            AC_MSG_CHECKING([for $pm])
            if ! $PERL -M$pm -e1 >&AS_MESSAGE_LOG_FD 2>&1; then
                AC_MSG_RESULT([no])
                missing_perl_modules=yes
            else
                AC_MSG_RESULT([yes])
            fi
        done
        if test "x$missing_perl_modules" = "xyes"; then
            AC_MSG_WARN([some Perl modules required to compile the Perl virt-* tools are missing])
        fi
        ])

AM_CONDITIONAL([HAVE_TOOLS],
    [test "x$PERL" != "xno" && test "x$missing_perl_modules" != "xyes"])

dnl gobject library
AC_ARG_ENABLE([gobject],
    AS_HELP_STRING([--disable-gobject], [Disable GObject bindings]),
    [],
    [enable_gobject=yes])
AS_IF(
  [test "x$enable_gobject" != "xno"],
  [
    PKG_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.26.0],
      [
        AC_SUBST([GOBJECT_CFLAGS])
        AC_SUBST([GOBJECT_LIBS])
        AC_DEFINE([HAVE_GOBJECT],[1],
                  [gobject library found at compile time.])
      ],
      [AC_MSG_WARN([gobject library not found, gobject binding will be disabled])]
    )

    PKG_CHECK_MODULES([GIO], [gio-2.0 >= 2.26.0],
      [
        AC_SUBST([GIO_CFLAGS])
        AC_SUBST([GIO_LIBS])
        AC_DEFINE([HAVE_GIO],[1],
                  [gio library found at compile time.])
      ],
      [AC_MSG_WARN([gio library not found, gobject binding will be disabled])]
    )
  ]
)
AM_CONDITIONAL([HAVE_GOBJECT],
               [test "x$GOBJECT_LIBS" != "x" -a "x$GIO_LIBS" != "x"])

AC_CHECK_PROG([GJS],[gjs],[gjs])
AS_IF(
  [test "x$GJS" = "x"],
  [AC_MSG_WARN([gjs not found, gobject bindtests will not run])]
)

dnl gobject introspection
m4_ifdef([GOBJECT_INTROSPECTION_CHECK], [
    GOBJECT_INTROSPECTION_CHECK([1.30.0])

    dnl The above check automatically sets HAVE_INTROSPECTION, but we
    dnl want this to be conditional on gobject also being
    dnl available. We can't move the above check inside the gobject if
    dnl block above or HAVE_INTROSPECTION ends up undefined, so we
    dnl recheck it here.
    AM_CONDITIONAL([HAVE_INTROSPECTION],
                   [test "x$HAVE_INTROSPECTION_TRUE" = "x" &&
                    test "x$HAVE_GOBJECT_TRUE" = "x"])
],[
    AM_CONDITIONAL([HAVE_INTROSPECTION], [false])
])

# check for gtk-doc
m4_ifdef([GTK_DOC_CHECK], [
GTK_DOC_CHECK([1.14],[--flavour no-tmpl])
],[
AM_CONDITIONAL([ENABLE_GTK_DOC], false)
])

dnl Library versioning.
MAX_PROC_NR=`cat $srcdir/src/MAX_PROC_NR`
AC_SUBST(MAX_PROC_NR)

dnl Replace libtool with a wrapper that clobbers dependency_libs in *.la files
dnl http://lists.fedoraproject.org/pipermail/devel/2010-November/146343.html
LIBTOOL='bash $(top_srcdir)/libtool-kill-dependency_libs.sh $(top_builddir)/libtool'
AC_SUBST([LIBTOOL])

dnl Produce output files.
AC_CONFIG_HEADERS([config.h])
dnl http://www.mail-archive.com/automake@gnu.org/msg10204.html
AC_CONFIG_FILES([appliance/libguestfs-make-fixed-appliance],
                [chmod +x appliance/libguestfs-make-fixed-appliance])
AC_CONFIG_FILES([podwrapper.sh],
                [chmod +x podwrapper.sh])
AC_CONFIG_FILES([run],
                [chmod +x run])
AC_CONFIG_FILES([Makefile
                 align/Makefile
                 appliance/Makefile
                 cat/Makefile
                 csharp/Makefile
                 daemon/Makefile
                 df/Makefile
                 edit/Makefile
                 erlang/Makefile
                 erlang/examples/Makefile
                 examples/Makefile
                 fish/Makefile
                 format/Makefile
                 fuse/Makefile
                 generator/Makefile
                 gnulib/lib/Makefile
                 gnulib/tests/Makefile
                 gobject/Makefile
                 gobject/docs/Makefile
                 gobject/docs/guestfs-docs.sgml
                 haskell/Makefile
                 inspector/Makefile
                 java/Makefile
                 java/examples/Makefile
                 ocaml/META
                 ocaml/Makefile
                 ocaml/examples/Makefile
                 perl/Makefile
                 perl/Makefile.PL
                 perl/examples/Makefile
                 php/Makefile
                 po-docs/Makefile
                 po-docs/ja/Makefile
                 po-docs/uk/Makefile
                 po/Makefile
                 python/Makefile
                 python/examples/Makefile
                 rescue/Makefile
                 resize/Makefile
                 ruby/Makefile
                 ruby/Rakefile
                 ruby/examples/Makefile
                 sparsify/Makefile
                 src/Makefile
                 src/libguestfs.pc
                 sysprep/Makefile
                 test-tool/Makefile
                 tests/btrfs/Makefile
                 tests/c-api/Makefile
                 tests/charsets/Makefile
                 tests/data/Makefile
                 tests/extra/Makefile
                 tests/guests/Makefile
                 tests/luks/Makefile
                 tests/lvm/Makefile
                 tests/md/Makefile
                 tests/ntfsclone/Makefile
                 tests/protocol/Makefile
                 tests/qemu/Makefile
                 tests/regressions/Makefile
                 tests/xml/Makefile
                 tools/Makefile])
AC_OUTPUT

dnl Produce summary.
echo
echo
echo "------------------------------------------------------------"
echo "Thank you for downloading $PACKAGE_STRING"
echo
echo "This is how we have configured the optional components for you today:"
echo
echo    "Daemon .............................. $enable_daemon"
echo    "Appliance ........................... $enable_appliance"
echo    "QEMU ................................ $QEMU $QEMU_OPTIONS"
AS_ECHO_N(["OCaml bindings ...................... "])
if test "x$HAVE_OCAML_TRUE" = "x"; then echo "yes"; else echo "no"; fi
AS_ECHO_N(["Perl bindings ....................... "])
if test "x$HAVE_PERL_TRUE" = "x"; then echo "yes"; else echo "no"; fi
AS_ECHO_N(["Python bindings ..................... "])
if test "x$HAVE_PYTHON_TRUE" = "x"; then echo "yes"; else echo "no"; fi
AS_ECHO_N(["Ruby bindings ....................... "])
if test "x$HAVE_RUBY_TRUE" = "x"; then echo "yes"; else echo "no"; fi
AS_ECHO_N(["Java bindings ....................... "])
if test "x$HAVE_JAVA_TRUE" = "x"; then echo "yes"; else echo "no"; fi
AS_ECHO_N(["Haskell bindings .................... "])
if test "x$HAVE_HASKELL_TRUE" = "x"; then echo "yes"; else echo "no"; fi
AS_ECHO_N(["PHP bindings ........................ "])
if test "x$HAVE_PHP_TRUE" = "x"; then echo "yes"; else echo "no"; fi
AS_ECHO_N(["Erlang bindings ..................... "])
if test "x$HAVE_ERLANG_TRUE" = "x"; then echo "yes"; else echo "no"; fi
echo    "guestfish and C virt tools .......... yes"
AS_ECHO_N(["Perl virt tools ..................... "])
if test "x$HAVE_TOOLS_TRUE" = "x"; then echo "yes"; else echo "no"; fi
AS_ECHO_N(["OCaml virt tools .................... "])
if test "x$HAVE_OCAML_TRUE" = "x"; then echo "yes"; else echo "no"; fi
echo "FUSE filesystem ..................... $enable_fuse"
AS_ECHO_N(["gobject bindings .................... "])
if test "x$HAVE_GOBJECT_TRUE" = "x"; then echo "yes"; else echo "no"; fi
AS_ECHO_N(["gobject introspection ............... "])
if test "x$HAVE_INTROSPECTION_TRUE" = "x"; then echo "yes"; else echo "no"; fi
AS_ECHO_N(["GNU gettext for i18n ................ "])
if test "x$HAVE_GNU_GETTEXT_TRUE" = "x"; then echo "yes"; else echo "no"; fi
echo
echo "If any optional component is configured 'no' when you expected 'yes'"
echo "then you should check the preceding messages."
echo
echo "Please report bugs back to the mailing list:"
echo "http://www.redhat.com/mailman/listinfo/libguestfs"
echo
echo "Next you should type 'make' to build the package,"
echo "then 'make check' to run the tests."
echo "------------------------------------------------------------"