configure

#!/bin/sh
#
# qemu configure script (c) 2003 Fabrice Bellard
#

# Unset some variables known to interfere with behavior of common tools,
# just as autoconf does.
CLICOLOR_FORCE= GREP_OPTIONS=
unset CLICOLOR_FORCE GREP_OPTIONS

# Don't allow CCACHE, if present, to use cached results of compile tests!
export CCACHE_RECACHE=yes

# Temporary directory used for files created while
# configure runs. Since it is in the build directory
# we can safely blow away any previous version of it
# (and we need not jump through hoops to try to delete
# it when configure exits.)
TMPDIR1="config-temp"
rm -rf "${TMPDIR1}"
mkdir -p "${TMPDIR1}"
if [ $? -ne 0 ]; then
    echo "ERROR: failed to create temporary directory"
    exit 1
fi

TMPB="qemu-conf"
TMPC="${TMPDIR1}/${TMPB}.c"
TMPO="${TMPDIR1}/${TMPB}.o"
TMPCXX="${TMPDIR1}/${TMPB}.cxx"
TMPL="${TMPDIR1}/${TMPB}.lo"
TMPA="${TMPDIR1}/lib${TMPB}.la"
TMPE="${TMPDIR1}/${TMPB}.exe"

rm -f config.log

# Print a helpful header at the top of config.log
echo "# QEMU configure log $(date)" >> config.log
printf "# Configured with:" >> config.log
printf " '%s'" "$0" "$@" >> config.log
echo >> config.log
echo "#" >> config.log

error_exit() {
    echo
    echo "ERROR: $1"
    while test -n "$2"; do
        echo "       $2"
        shift
    done
    echo
    exit 1
}

do_compiler() {
    # Run the compiler, capturing its output to the log. First argument
    # is compiler binary to execute.
    local compiler="$1"
    shift
    echo $compiler "$@" >> config.log
    $compiler "$@" >> config.log 2>&1 || return $?
    # Test passed. If this is an --enable-werror build, rerun
    # the test with -Werror and bail out if it fails. This
    # makes warning-generating-errors in configure test code
    # obvious to developers.
    if test "$werror" != "yes"; then
        return 0
    fi
    # Don't bother rerunning the compile if we were already using -Werror
    case "$*" in
        *-Werror*)
           return 0
        ;;
    esac
    echo $compiler -Werror "$@" >> config.log
    $compiler -Werror "$@" >> config.log 2>&1 && return $?
    error_exit "configure test passed without -Werror but failed with -Werror." \
        "This is probably a bug in the configure script. The failing command" \
        "will be at the bottom of config.log." \
        "You can run configure with --disable-werror to bypass this check."
}

do_cc() {
    do_compiler "$cc" "$@"
}

do_cxx() {
    do_compiler "$cxx" "$@"
}

update_cxxflags() {
    # Set QEMU_CXXFLAGS from QEMU_CFLAGS by filtering out those
    # options which some versions of GCC's C++ compiler complain about
    # because they only make sense for C programs.
    QEMU_CXXFLAGS=
    for arg in $QEMU_CFLAGS; do
        case $arg in
            -Wstrict-prototypes|-Wmissing-prototypes|-Wnested-externs|\
            -Wold-style-declaration|-Wold-style-definition|-Wredundant-decls)
                ;;
            *)
                QEMU_CXXFLAGS=${QEMU_CXXFLAGS:+$QEMU_CXXFLAGS }$arg
                ;;
        esac
    done
}

compile_object() {
  local_cflags="$1"
  do_cc $QEMU_CFLAGS $local_cflags -c -o $TMPO $TMPC
}

compile_prog() {
  local_cflags="$1"
  local_ldflags="$2"
  do_cc $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC $LDFLAGS $local_ldflags
}

# symbolically link $1 to $2.  Portable version of "ln -sf".
symlink() {
  rm -rf "$2"
  mkdir -p "$(dirname "$2")"
  ln -s "$1" "$2"
}

# check whether a command is available to this shell (may be either an
# executable or a builtin)
has() {
    type "$1" >/dev/null 2>&1
}

# search for an executable in PATH
path_of() {
    local_command="$1"
    local_ifs="$IFS"
    local_dir=""

    # pathname has a dir component?
    if [ "${local_command#*/}" != "$local_command" ]; then
        if [ -x "$local_command" ] && [ ! -d "$local_command" ]; then
            echo "$local_command"
            return 0
        fi
    fi
    if [ -z "$local_command" ]; then
        return 1
    fi

    IFS=:
    for local_dir in $PATH; do
        if [ -x "$local_dir/$local_command" ] && [ ! -d "$local_dir/$local_command" ]; then
            echo "$local_dir/$local_command"
            IFS="${local_ifs:-$(printf ' \t\n')}"
            return 0
        fi
    done
    # not found
    IFS="${local_ifs:-$(printf ' \t\n')}"
    return 1
}

have_backend () {
    echo "$trace_backends" | grep "$1" >/dev/null
}

# default parameters
source_path=`dirname "$0"`
cpu=""
iasl="iasl"
interp_prefix="/usr/gnemul/qemu-%M"
static="no"
cross_prefix=""
audio_drv_list=""
block_drv_rw_whitelist=""
block_drv_ro_whitelist=""
host_cc="cc"
libs_softmmu=""
libs_tools=""
audio_pt_int=""
audio_win_int=""
cc_i386=i386-pc-linux-gnu-gcc
libs_qga=""
debug_info="yes"
stack_protector=""

# Don't accept a target_list environment variable.
unset target_list

# Default value for a variable defining feature "foo".
#  * foo="no"  feature will only be used if --enable-foo arg is given
#  * foo=""    feature will be searched for, and if found, will be used
#              unless --disable-foo is given
#  * foo="yes" this value will only be set by --enable-foo flag.
#              feature will searched for,
#              if not found, configure exits with error
#
# Always add --enable-foo and --disable-foo command line args.
# Distributions want to ensure that several features are compiled in, and it
# is impossible without a --enable-foo that exits if a feature is not found.

bluez=""
brlapi=""
curl=""
curses=""
docs=""
fdt=""
netmap="no"
pixman=""
sdl=""
sdlabi="1.2"
virtfs=""
vnc="yes"
sparse="no"
uuid=""
vde=""
vnc_sasl=""
vnc_jpeg=""
vnc_png=""
xen=""
xen_ctrl_version=""
xen_pv_domain_build="no"
xen_pci_passthrough=""
linux_aio=""
cap_ng=""
attr=""
libattr=""
xfs=""

vhost_net="no"
vhost_scsi="no"
kvm="no"
rdma=""
gprof="no"
debug_tcg="no"
debug="no"
fortify_source=""
strip_opt="yes"
tcg_interpreter="no"
bigendian="no"
mingw32="no"
gcov="no"
gcov_tool="gcov"
EXESUF=""
DSOSUF=".so"
LDFLAGS_SHARED="-shared"
modules="no"
prefix="/usr/local"
mandir="\${prefix}/share/man"
datadir="\${prefix}/share"
qemu_docdir="\${prefix}/share/doc/qemu"
bindir="\${prefix}/bin"
libdir="\${prefix}/lib"
libexecdir="\${prefix}/libexec"
includedir="\${prefix}/include"
sysconfdir="\${prefix}/etc"
local_statedir="\${prefix}/var"
confsuffix="/qemu"
slirp="yes"
oss_lib=""
bsd="no"
linux="no"
solaris="no"
profiler="no"
cocoa="no"
softmmu="yes"
linux_user="no"
bsd_user="no"
aix="no"
blobs="yes"
pkgversion=""
pie=""
zero_malloc=""
qom_cast_debug="yes"
trace_backends="log"
trace_file="trace"
spice=""
rbd=""
smartcard=""
libusb=""
usb_redir=""
opengl=""
opengl_dmabuf="no"
avx2_opt="no"
zlib="yes"
lzo=""
snappy=""
bzip2=""
guest_agent=""
guest_agent_with_vss="no"
guest_agent_ntddscsi="no"
guest_agent_msi=""
vss_win32_sdk=""
win_sdk="no"
want_tools="yes"
libiscsi=""
libnfs=""
coroutine=""
coroutine_pool=""
seccomp=""
glusterfs=""
glusterfs_discard="no"
glusterfs_zerofill="no"
archipelago="no"
gtk=""
gtkabi=""
gtk_gl="no"
gnutls=""
gnutls_hash=""
nettle=""
gcrypt=""
vte=""
virglrenderer=""
tpm="yes"
libssh2=""
vhdx=""
numa=""
tcmalloc="no"
jemalloc="no"

# parse CC options first
for opt do
  optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
  case "$opt" in
  --cross-prefix=*) cross_prefix="$optarg"
  ;;
  --cc=*) CC="$optarg"
  ;;
  --cxx=*) CXX="$optarg"
  ;;
  --source-path=*) source_path="$optarg"
  ;;
  --cpu=*) cpu="$optarg"
  ;;
  --extra-cflags=*) QEMU_CFLAGS="$QEMU_CFLAGS $optarg"
                    EXTRA_CFLAGS="$optarg"
  ;;
  --extra-ldflags=*) LDFLAGS="$LDFLAGS $optarg"
                     EXTRA_LDFLAGS="$optarg"
  ;;
  --enable-debug-info) debug_info="yes"
  ;;
  --disable-debug-info) debug_info="no"
  ;;
  esac
done
# OS specific
# Using uname is really, really broken.  Once we have the right set of checks
# we can eliminate its usage altogether.

# Preferred compiler:
#  ${CC} (if set)
#  ${cross_prefix}gcc (if cross-prefix specified)
#  system compiler
if test -z "${CC}${cross_prefix}"; then
  cc="$host_cc"
else
  cc="${CC-${cross_prefix}gcc}"
fi

if test -z "${CXX}${cross_prefix}"; then
  cxx="c++"
else
  cxx="${CXX-${cross_prefix}g++}"
fi

ar="${AR-${cross_prefix}ar}"
as="${AS-${cross_prefix}as}"
cpp="${CPP-$cc -E}"
objcopy="${OBJCOPY-${cross_prefix}objcopy}"
ld="${LD-${cross_prefix}ld}"
nm="${NM-${cross_prefix}nm}"
strip="${STRIP-${cross_prefix}strip}"
windres="${WINDRES-${cross_prefix}windres}"
pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
query_pkg_config() {
    "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
}
pkg_config=query_pkg_config
sdl_config="${SDL_CONFIG-${cross_prefix}sdl-config}"
sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"

# If the user hasn't specified ARFLAGS, default to 'rv', just as make does.
ARFLAGS="${ARFLAGS-rv}"

# default flags for all hosts
QEMU_CFLAGS="-fno-strict-aliasing -fno-common $QEMU_CFLAGS"
QEMU_CFLAGS="-Wall -Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
QEMU_INCLUDES="-I. -I\$(SRC_PATH) -I\$(SRC_PATH)/include"
if test "$debug_info" = "yes"; then
    CFLAGS="-g $CFLAGS"
    LDFLAGS="-g $LDFLAGS"
fi

# make source path absolute
source_path=`cd "$source_path"; pwd`

# running configure in the source tree?
# we know that's the case if configure is there.
if test -f "./configure"; then
    pwd_is_source_path="y"
else
    pwd_is_source_path="n"
fi

check_define() {
cat > $TMPC <<EOF
#if !defined($1)
#error $1 not defined
#endif
int main(void) { return 0; }
EOF
  compile_object
}

check_include() {
cat > $TMPC <<EOF
#include <$1>
int main(void) { return 0; }
EOF
  compile_object
}

write_c_skeleton() {
    cat > $TMPC <<EOF
int main(void) { return 0; }
EOF
}

if check_define __linux__ ; then
  targetos="Linux"
elif check_define _WIN32 ; then
  targetos='MINGW32'
elif check_define __OpenBSD__ ; then
  targetos='OpenBSD'
elif check_define __sun__ ; then
  targetos='SunOS'
elif check_define __HAIKU__ ; then
  targetos='Haiku'
else
  targetos=`uname -s`
fi

# Some host OSes need non-standard checks for which CPU to use.
# Note that these checks are broken for cross-compilation: if you're
# cross-compiling to one of these OSes then you'll need to specify
# the correct CPU with the --cpu option.
case $targetos in
Darwin)
  # on Leopard most of the system is 32-bit, so we have to ask the kernel if we can
  # run 64-bit userspace code.
  # If the user didn't specify a CPU explicitly and the kernel says this is
  # 64 bit hw, then assume x86_64. Otherwise fall through to the usual detection code.
  if test -z "$cpu" && test "$(sysctl -n hw.optional.x86_64)" = "1"; then
    cpu="x86_64"
  fi
  ;;
SunOS)
  # `uname -m` returns i86pc even on an x86_64 box, so default based on isainfo
  if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then
    cpu="x86_64"
  fi
esac

if test ! -z "$cpu" ; then
  # command line argument
  :
elif check_define __i386__ ; then
  cpu="i386"
elif check_define __x86_64__ ; then
  if check_define __ILP32__ ; then
    cpu="x32"
  else
    cpu="x86_64"
  fi
elif check_define __sparc__ ; then
  if check_define __arch64__ ; then
    cpu="sparc64"
  else
    cpu="sparc"
  fi
elif check_define _ARCH_PPC ; then
  if check_define _ARCH_PPC64 ; then
    cpu="ppc64"
  else
    cpu="ppc"
  fi
elif check_define __mips__ ; then
  cpu="mips"
elif check_define __ia64__ ; then
  cpu="ia64"
elif check_define __s390__ ; then
  if check_define __s390x__ ; then
    cpu="s390x"
  else
    cpu="s390"
  fi
elif check_define __arm__ ; then
  cpu="arm"
elif check_define __aarch64__ ; then
  cpu="aarch64"
elif check_define __hppa__ ; then
  cpu="hppa"
else
  cpu=`uname -m`
fi

ARCH=
# Normalise host CPU name and set ARCH.
# Note that this case should only have supported host CPUs, not guests.
case "$cpu" in
  ia64|ppc|ppc64|s390|s390x|sparc64|x32)
    cpu="$cpu"
  ;;
  i386|i486|i586|i686|i86pc|BePC)
    cpu="i386"
  ;;
  x86_64|amd64)
    cpu="x86_64"
  ;;
  armv*b|armv*l|arm)
    cpu="arm"
  ;;
  aarch64)
    cpu="aarch64"
  ;;
  mips*)
    cpu="mips"
  ;;
  sparc|sun4[cdmuv])
    cpu="sparc"
  ;;
  *)
    # This will result in either an error or falling back to TCI later
    ARCH=unknown
  ;;
esac
if test -z "$ARCH"; then
  ARCH="$cpu"
fi

# OS specific

# host *BSD for user mode
HOST_VARIANT_DIR=""

case $targetos in
CYGWIN*)
  mingw32="yes"
  QEMU_CFLAGS="-mno-cygwin $QEMU_CFLAGS"
  audio_possible_drivers="sdl"
  audio_drv_list="sdl"
;;
MINGW32*)
  mingw32="yes"
  audio_possible_drivers="dsound sdl"
  if check_include dsound.h; then
    audio_drv_list="dsound"
  else
    audio_drv_list=""
  fi
;;
GNU/kFreeBSD)
  bsd="yes"
  audio_drv_list="oss"
  audio_possible_drivers="oss sdl pa"
;;
FreeBSD)
  bsd="yes"
  make="${MAKE-gmake}"
  audio_drv_list="oss"
  audio_possible_drivers="oss sdl pa"
  # needed for kinfo_getvmmap(3) in libutil.h
  LIBS="-lutil $LIBS"
  netmap=""  # enable netmap autodetect
  HOST_VARIANT_DIR="freebsd"
;;
DragonFly)
  bsd="yes"
  make="${MAKE-gmake}"
  audio_drv_list="oss"
  audio_possible_drivers="oss sdl pa"
  HOST_VARIANT_DIR="dragonfly"
;;
NetBSD)
  bsd="yes"
  make="${MAKE-gmake}"
  audio_drv_list="oss"
  audio_possible_drivers="oss sdl"
  oss_lib="-lossaudio"
  HOST_VARIANT_DIR="netbsd"
;;
OpenBSD)
  bsd="yes"
  make="${MAKE-gmake}"
  audio_drv_list="sdl"
  audio_possible_drivers="sdl"
  HOST_VARIANT_DIR="openbsd"
;;
Darwin)
  bsd="yes"
  darwin="yes"
  LDFLAGS_SHARED="-bundle -undefined dynamic_lookup"
  if [ "$cpu" = "x86_64" ] ; then
    QEMU_CFLAGS="-arch x86_64 $QEMU_CFLAGS"
    LDFLAGS="-arch x86_64 $LDFLAGS"
  fi
  cocoa="yes"
  audio_drv_list="coreaudio"
  audio_possible_drivers="coreaudio sdl"
  LDFLAGS="-framework CoreFoundation -framework IOKit $LDFLAGS"
  libs_softmmu="-F/System/Library/Frameworks -framework Cocoa -framework IOKit $libs_softmmu"
  # Disable attempts to use ObjectiveC features in os/object.h since they
  # won't work when we're compiling with gcc as a C compiler.
  QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
  HOST_VARIANT_DIR="darwin"
;;
SunOS)
  solaris="yes"
  make="${MAKE-gmake}"
  install="${INSTALL-ginstall}"
  ld="gld"
  smbd="${SMBD-/usr/sfw/sbin/smbd}"
  needs_libsunmath="no"
  solarisrev=`uname -r | cut -f2 -d.`
  if [ "$cpu" = "i386" -o "$cpu" = "x86_64" ] ; then
    if test "$solarisrev" -le 9 ; then
      if test -f /opt/SUNWspro/prod/lib/libsunmath.so.1; then
        needs_libsunmath="yes"
        QEMU_CFLAGS="-I/opt/SUNWspro/prod/include/cc $QEMU_CFLAGS"
        LDFLAGS="-L/opt/SUNWspro/prod/lib -R/opt/SUNWspro/prod/lib $LDFLAGS"
        LIBS="-lsunmath $LIBS"
      else
        error_exit "QEMU will not link correctly on Solaris 8/X86 or 9/x86 without" \
            "libsunmath from the Sun Studio compilers tools, due to a lack of" \
            "C99 math features in libm.so in Solaris 8/x86 and Solaris 9/x86" \
            "Studio 11 can be downloaded from www.sun.com."
      fi
    fi
  fi
  if test -f /usr/include/sys/soundcard.h ; then
    audio_drv_list="oss"
  fi
  audio_possible_drivers="oss sdl"
# needed for CMSG_ macros in sys/socket.h
  QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
# needed for TIOCWIN* defines in termios.h
  QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
  QEMU_CFLAGS="-std=gnu99 $QEMU_CFLAGS"
  solarisnetlibs="-lsocket -lnsl -lresolv"
  LIBS="$solarisnetlibs $LIBS"
  libs_qga="$solarisnetlibs $libs_qga"
;;
AIX)
  aix="yes"
  make="${MAKE-gmake}"
;;
Haiku)
  haiku="yes"
  QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS $QEMU_CFLAGS"
  LIBS="-lposix_error_mapper -lnetwork $LIBS"
;;
*)
  audio_drv_list="oss"
  audio_possible_drivers="oss alsa sdl pa"
  linux="yes"
  linux_user="yes"
  kvm="yes"
  vhost_net="yes"
  vhost_scsi="yes"
  QEMU_INCLUDES="-I\$(SRC_PATH)/linux-headers -I$(pwd)/linux-headers $QEMU_INCLUDES"
;;
esac

if [ "$bsd" = "yes" ] ; then
  if [ "$darwin" != "yes" ] ; then
    bsd_user="yes"
  fi
fi

: ${make=${MAKE-make}}
: ${install=${INSTALL-install}}
: ${python=${PYTHON-python}}
: ${smbd=${SMBD-/usr/sbin/smbd}}

# Default objcc to clang if available, otherwise use CC
if has clang; then
  objcc=clang
else
  objcc="$cc"
fi

if test "$mingw32" = "yes" ; then
  EXESUF=".exe"
  DSOSUF=".dll"
  QEMU_CFLAGS="-DWIN32_LEAN_AND_MEAN -DWINVER=0x501 $QEMU_CFLAGS"
  # enable C99/POSIX format strings (needs mingw32-runtime 3.15 or later)
  QEMU_CFLAGS="-D__USE_MINGW_ANSI_STDIO=1 $QEMU_CFLAGS"
  # MinGW needs -mthreads for TLS and macro _MT.
  QEMU_CFLAGS="-mthreads $QEMU_CFLAGS"
  LIBS="-lwinmm -lws2_32 -liphlpapi $LIBS"
  write_c_skeleton;
  if compile_prog "" "-liberty" ; then
    LIBS="-liberty $LIBS"
  fi
  prefix="c:/Program Files/QEMU"
  mandir="\${prefix}"
  datadir="\${prefix}"
  qemu_docdir="\${prefix}"
  bindir="\${prefix}"
  sysconfdir="\${prefix}"
  local_statedir=
  confsuffix=""
  libs_qga="-lws2_32 -lwinmm -lpowrprof -liphlpapi -lnetapi32 $libs_qga"
fi

werror=""

for opt do
  optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
  case "$opt" in
  --help|-h) show_help=yes
  ;;
  --version|-V) exec cat $source_path/VERSION
  ;;
  --prefix=*) prefix="$optarg"
  ;;
  --interp-prefix=*) interp_prefix="$optarg"
  ;;
  --source-path=*)
  ;;
  --cross-prefix=*)
  ;;
  --cc=*)
  ;;
  --host-cc=*) host_cc="$optarg"
  ;;
  --cxx=*)
  ;;
  --iasl=*) iasl="$optarg"
  ;;
  --objcc=*) objcc="$optarg"
  ;;
  --make=*) make="$optarg"
  ;;
  --install=*) install="$optarg"
  ;;
  --python=*) python="$optarg"
  ;;
  --gcov=*) gcov_tool="$optarg"
  ;;
  --smbd=*) smbd="$optarg"
  ;;
  --extra-cflags=*)
  ;;
  --extra-ldflags=*)
  ;;
  --enable-debug-info)
  ;;
  --disable-debug-info)
  ;;
  --enable-modules)
      modules="yes"
  ;;
  --disable-modules)
      modules="no"
  ;;
  --cpu=*)
  ;;
  --target-list=*) target_list="$optarg"
  ;;
  --enable-trace-backends=*) trace_backends="$optarg"
  ;;
  # XXX: backwards compatibility
  --enable-trace-backend=*) trace_backends="$optarg"
  ;;
  --with-trace-file=*) trace_file="$optarg"
  ;;
  --enable-gprof) gprof="yes"
  ;;
  --enable-gcov) gcov="yes"
  ;;
  --static)
    static="yes"
    LDFLAGS="-static $LDFLAGS"
    QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
  ;;
  --mandir=*) mandir="$optarg"
  ;;
  --bindir=*) bindir="$optarg"
  ;;
  --libdir=*) libdir="$optarg"
  ;;
  --libexecdir=*) libexecdir="$optarg"
  ;;
  --includedir=*) includedir="$optarg"
  ;;
  --datadir=*) datadir="$optarg"
  ;;
  --with-confsuffix=*) confsuffix="$optarg"
  ;;
  --docdir=*) qemu_docdir="$optarg"
  ;;
  --sysconfdir=*) sysconfdir="$optarg"
  ;;
  --localstatedir=*) local_statedir="$optarg"
  ;;
  --sbindir=*|--sharedstatedir=*|\
  --oldincludedir=*|--datarootdir=*|--infodir=*|--localedir=*|\
  --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
    # These switches are silently ignored, for compatibility with
    # autoconf-generated configure scripts. This allows QEMU's
    # configure to be used by RPM and similar macros that set
    # lots of directory switches by default.
  ;;
  --with-system-pixman) pixman="system"
  ;;
  --without-system-pixman) pixman="internal"
  ;;
  --without-pixman) pixman="none"
  ;;
  --disable-sdl) sdl="no"
  ;;
  --enable-sdl) sdl="yes"
  ;;
  --with-sdlabi=*) sdlabi="$optarg"
  ;;
  --disable-qom-cast-debug) qom_cast_debug="no"
  ;;
  --enable-qom-cast-debug) qom_cast_debug="yes"
  ;;
  --disable-virtfs) virtfs="no"
  ;;
  --enable-virtfs) virtfs="yes"
  ;;
  --disable-vnc) vnc="no"
  ;;
  --enable-vnc) vnc="yes"
  ;;
  --oss-lib=*) oss_lib="$optarg"
  ;;
  --audio-drv-list=*) audio_drv_list="$optarg"
  ;;
  --block-drv-rw-whitelist=*|--block-drv-whitelist=*) block_drv_rw_whitelist=`echo "$optarg" | sed -e 's/,/ /g'`
  ;;
  --block-drv-ro-whitelist=*) block_drv_ro_whitelist=`echo "$optarg" | sed -e 's/,/ /g'`
  ;;
  --enable-debug-tcg) debug_tcg="yes"
  ;;
  --disable-debug-tcg) debug_tcg="no"
  ;;
  --enable-debug)
      # Enable debugging options that aren't excessively noisy
      debug_tcg="yes"
      debug="yes"
      strip_opt="no"
      fortify_source="no"
  ;;
  --enable-sparse) sparse="yes"
  ;;
  --disable-sparse) sparse="no"
  ;;
  --disable-strip) strip_opt="no"
  ;;
  --disable-vnc-sasl) vnc_sasl="no"
  ;;
  --enable-vnc-sasl) vnc_sasl="yes"
  ;;
  --disable-vnc-jpeg) vnc_jpeg="no"
  ;;
  --enable-vnc-jpeg) vnc_jpeg="yes"
  ;;
  --disable-vnc-png) vnc_png="no"
  ;;
  --enable-vnc-png) vnc_png="yes"
  ;;
  --disable-slirp) slirp="no"
  ;;
  --disable-uuid) uuid="no"
  ;;
  --enable-uuid) uuid="yes"
  ;;
  --disable-vde) vde="no"
  ;;
  --enable-vde) vde="yes"
  ;;
  --disable-netmap) netmap="no"
  ;;
  --enable-netmap) netmap="yes"
  ;;
  --disable-xen) xen="no"
  ;;
  --enable-xen) xen="yes"
  ;;
  --disable-xen-pci-passthrough) xen_pci_passthrough="no"
  ;;
  --enable-xen-pci-passthrough) xen_pci_passthrough="yes"
  ;;
  --disable-xen-pv-domain-build) xen_pv_domain_build="no"
  ;;
  --enable-xen-pv-domain-build) xen_pv_domain_build="yes"
  ;;
  --disable-brlapi) brlapi="no"
  ;;
  --enable-brlapi) brlapi="yes"
  ;;
  --disable-bluez) bluez="no"
  ;;
  --enable-bluez) bluez="yes"
  ;;
  --disable-kvm) kvm="no"
  ;;
  --enable-kvm) kvm="yes"
  ;;
  --disable-tcg-interpreter) tcg_interpreter="no"
  ;;
  --enable-tcg-interpreter) tcg_interpreter="yes"
  ;;
  --disable-cap-ng)  cap_ng="no"
  ;;
  --enable-cap-ng) cap_ng="yes"
  ;;
  --disable-spice) spice="no"
  ;;
  --enable-spice) spice="yes"
  ;;
  --disable-libiscsi) libiscsi="no"
  ;;
  --enable-libiscsi) libiscsi="yes"
  ;;
  --disable-libnfs) libnfs="no"
  ;;
  --enable-libnfs) libnfs="yes"
  ;;
  --enable-profiler) profiler="yes"
  ;;
  --disable-cocoa) cocoa="no"
  ;;
  --enable-cocoa)
      cocoa="yes" ;
      audio_drv_list="coreaudio `echo $audio_drv_list | sed s,coreaudio,,g`"
  ;;
  --disable-system) softmmu="no"
  ;;
  --enable-system) softmmu="yes"
  ;;
  --disable-user)
      linux_user="no" ;
      bsd_user="no" ;
  ;;
  --enable-user) ;;
  --disable-linux-user) linux_user="no"
  ;;
  --enable-linux-user) linux_user="yes"
  ;;
  --disable-bsd-user) bsd_user="no"
  ;;
  --enable-bsd-user) bsd_user="yes"
  ;;
  --enable-pie) pie="yes"
  ;;
  --disable-pie) pie="no"
  ;;
  --enable-werror) werror="yes"
  ;;
  --disable-werror) werror="no"
  ;;
  --enable-stack-protector) stack_protector="yes"
  ;;
  --disable-stack-protector) stack_protector="no"
  ;;
  --disable-curses) curses="no"
  ;;
  --enable-curses) curses="yes"
  ;;
  --disable-curl) curl="no"
  ;;
  --enable-curl) curl="yes"
  ;;
  --disable-fdt) fdt="no"
  ;;
  --enable-fdt) fdt="yes"
  ;;
  --disable-linux-aio) linux_aio="no"
  ;;
  --enable-linux-aio) linux_aio="yes"
  ;;
  --disable-attr) attr="no"
  ;;
  --enable-attr) attr="yes"
  ;;
  --disable-blobs) blobs="no"
  ;;
  --with-pkgversion=*) pkgversion=" ($optarg)"
  ;;
  --with-coroutine=*) coroutine="$optarg"
  ;;
  --disable-coroutine-pool) coroutine_pool="no"
  ;;
  --enable-coroutine-pool) coroutine_pool="yes"
  ;;
  --disable-docs) docs="no"
  ;;
  --enable-docs) docs="yes"
  ;;
  --disable-vhost-net) vhost_net="no"
  ;;
  --enable-vhost-net) vhost_net="yes"
  ;;
  --disable-vhost-scsi) vhost_scsi="no"
  ;;
  --enable-vhost-scsi) vhost_scsi="yes"
  ;;
  --disable-opengl) opengl="no"
  ;;
  --enable-opengl) opengl="yes"
  ;;
  --disable-rbd) rbd="no"
  ;;
  --enable-rbd) rbd="yes"
  ;;
  --disable-xfsctl) xfs="no"
  ;;
  --enable-xfsctl) xfs="yes"
  ;;
  --disable-smartcard) smartcard="no"
  ;;
  --enable-smartcard) smartcard="yes"
  ;;
  --disable-libusb) libusb="no"
  ;;
  --enable-libusb) libusb="yes"
  ;;
  --disable-usb-redir) usb_redir="no"
  ;;
  --enable-usb-redir) usb_redir="yes"
  ;;
  --disable-zlib-test) zlib="no"
  ;;
  --disable-lzo) lzo="no"
  ;;
  --enable-lzo) lzo="yes"
  ;;
  --disable-snappy) snappy="no"
  ;;
  --enable-snappy) snappy="yes"
  ;;
  --disable-bzip2) bzip2="no"
  ;;
  --enable-bzip2) bzip2="yes"
  ;;
  --enable-guest-agent) guest_agent="yes"
  ;;
  --disable-guest-agent) guest_agent="no"
  ;;
  --enable-guest-agent-msi) guest_agent_msi="yes"
  ;;
  --disable-guest-agent-msi) guest_agent_msi="no"
  ;;
  --with-vss-sdk) vss_win32_sdk=""
  ;;
  --with-vss-sdk=*) vss_win32_sdk="$optarg"
  ;;
  --without-vss-sdk) vss_win32_sdk="no"
  ;;
  --with-win-sdk) win_sdk=""
  ;;
  --with-win-sdk=*) win_sdk="$optarg"
  ;;
  --without-win-sdk) win_sdk="no"
  ;;
  --enable-tools) want_tools="yes"
  ;;
  --disable-tools) want_tools="no"
  ;;
  --enable-seccomp) seccomp="yes"
  ;;
  --disable-seccomp) seccomp="no"
  ;;
  --disable-glusterfs) glusterfs="no"
  ;;
  --enable-glusterfs) glusterfs="yes"
  ;;
  --disable-archipelago) archipelago="no"
  ;;
  --enable-archipelago) archipelago="yes"
  ;;
  --disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
      echo "$0: $opt is obsolete, virtio-blk data-plane is always on" >&2
  ;;
  --disable-gtk) gtk="no"
  ;;
  --enable-gtk) gtk="yes"
  ;;
  --disable-gnutls) gnutls="no"
  ;;
  --enable-gnutls) gnutls="yes"
  ;;
  --disable-nettle) nettle="no"
  ;;
  --enable-nettle) nettle="yes"
  ;;
  --disable-gcrypt) gcrypt="no"
  ;;
  --enable-gcrypt) gcrypt="yes"
  ;;
  --enable-rdma) rdma="yes"
  ;;
  --disable-rdma) rdma="no"
  ;;
  --with-gtkabi=*) gtkabi="$optarg"
  ;;
  --disable-vte) vte="no"
  ;;
  --enable-vte) vte="yes"
  ;;
  --disable-virglrenderer) virglrenderer="no"
  ;;
  --enable-virglrenderer) virglrenderer="yes"
  ;;
  --disable-tpm) tpm="no"
  ;;
  --enable-tpm) tpm="yes"
  ;;
  --disable-libssh2) libssh2="no"
  ;;
  --enable-libssh2) libssh2="yes"
  ;;
  --enable-vhdx) vhdx="yes"
  ;;
  --disable-vhdx) vhdx="no"
  ;;
  --disable-numa) numa="no"
  ;;
  --enable-numa) numa="yes"
  ;;
  --disable-tcmalloc) tcmalloc="no"
  ;;
  --enable-tcmalloc) tcmalloc="yes"
  ;;
  --disable-jemalloc) jemalloc="no"
  ;;
  --enable-jemalloc) jemalloc="yes"
  ;;
  *)
      echo "ERROR: unknown option $opt"
      echo "Try '$0 --help' for more information"
      exit 1
  ;;
  esac
done

if ! has $python; then
  error_exit "Python not found. Use --python=/path/to/python"
fi

# Note that if the Python conditional here evaluates True we will exit
# with status 1 which is a shell 'false' value.
if ! $python -c 'import sys; sys.exit(sys.version_info < (2,6) or sys.version_info >= (3,))'; then
  error_exit "Cannot use '$python', Python 2.6 or later is required." \
      "Note that Python 3 or later is not yet supported." \
      "Use --python=/path/to/python to specify a supported Python."
fi

# Suppress writing compiled files
python="$python -B"

case "$cpu" in
    ppc)
           CPU_CFLAGS="-m32"
           LDFLAGS="-m32 $LDFLAGS"
           ;;
    ppc64)
           CPU_CFLAGS="-m64"
           LDFLAGS="-m64 $LDFLAGS"
           ;;
    sparc)
           LDFLAGS="-m32 $LDFLAGS"
           CPU_CFLAGS="-m32 -mcpu=ultrasparc"
           ;;
    sparc64)
           LDFLAGS="-m64 $LDFLAGS"
           CPU_CFLAGS="-m64 -mcpu=ultrasparc"
           ;;
    s390)
           CPU_CFLAGS="-m31"
           LDFLAGS="-m31 $LDFLAGS"
           ;;
    s390x)
           CPU_CFLAGS="-m64"
           LDFLAGS="-m64 $LDFLAGS"
           ;;
    i386)
           CPU_CFLAGS="-m32"
           LDFLAGS="-m32 $LDFLAGS"
           cc_i386='$(CC) -m32'
           ;;
    x86_64)
           CPU_CFLAGS="-m64"
           LDFLAGS="-m64 $LDFLAGS"
           cc_i386='$(CC) -m32'
           ;;
    x32)
           CPU_CFLAGS="-mx32"
           LDFLAGS="-mx32 $LDFLAGS"
           cc_i386='$(CC) -m32'
           ;;
    # No special flags required for other host CPUs
esac

QEMU_CFLAGS="$CPU_CFLAGS $QEMU_CFLAGS"
EXTRA_CFLAGS="$CPU_CFLAGS $EXTRA_CFLAGS"

default_target_list=""

mak_wilds=""

if [ "$softmmu" = "yes" ]; then
    mak_wilds="${mak_wilds} $source_path/default-configs/*-softmmu.mak"
fi
if [ "$linux_user" = "yes" ]; then
    mak_wilds="${mak_wilds} $source_path/default-configs/*-linux-user.mak"
fi
if [ "$bsd_user" = "yes" ]; then
    mak_wilds="${mak_wilds} $source_path/default-configs/*-bsd-user.mak"
fi

for config in $mak_wilds; do
    default_target_list="${default_target_list} $(basename "$config" .mak)"
done

if test x"$show_help" = x"yes" ; then
cat << EOF

Usage: configure [options]
Options: [defaults in brackets after descriptions]

Standard options:
  --help                   print this message
  --prefix=PREFIX          install in PREFIX [$prefix]
  --interp-prefix=PREFIX   where to find shared libraries, etc.
                           use %M for cpu name [$interp_prefix]
  --target-list=LIST       set target list (default: build everything)
$(echo Available targets: $default_target_list | \
  fold -s -w 53 | sed -e 's/^/                           /')

Advanced options (experts only):
  --source-path=PATH       path of source code [$source_path]
  --cross-prefix=PREFIX    use PREFIX for compile tools [$cross_prefix]
  --cc=CC                  use C compiler CC [$cc]
  --iasl=IASL              use ACPI compiler IASL [$iasl]
  --host-cc=CC             use C compiler CC [$host_cc] for code run at
                           build time
  --cxx=CXX                use C++ compiler CXX [$cxx]
  --objcc=OBJCC            use Objective-C compiler OBJCC [$objcc]
  --extra-cflags=CFLAGS    append extra C compiler flags QEMU_CFLAGS
  --extra-ldflags=LDFLAGS  append extra linker flags LDFLAGS
  --make=MAKE              use specified make [$make]
  --install=INSTALL        use specified install [$install]
  --python=PYTHON          use specified python [$python]
  --smbd=SMBD              use specified smbd [$smbd]
  --static                 enable static build [$static]
  --mandir=PATH            install man pages in PATH
  --datadir=PATH           install firmware in PATH$confsuffix
  --docdir=PATH            install documentation in PATH$confsuffix
  --bindir=PATH            install binaries in PATH
  --libdir=PATH            install libraries in PATH
  --sysconfdir=PATH        install config in PATH$confsuffix
  --localstatedir=PATH     install local state in PATH (set at runtime on win32)
  --with-confsuffix=SUFFIX suffix for QEMU data inside datadir/libdir/sysconfdir [$confsuffix]
  --enable-debug           enable common debug build options
  --disable-strip          disable stripping binaries
  --disable-werror         disable compilation abort on warning
  --disable-stack-protector disable compiler-provided stack protection
  --audio-drv-list=LIST    set audio drivers list:
                           Available drivers: $audio_possible_drivers
  --block-drv-whitelist=L  Same as --block-drv-rw-whitelist=L
  --block-drv-rw-whitelist=L
                           set block driver read-write whitelist
                           (affects only QEMU, not qemu-img)
  --block-drv-ro-whitelist=L
                           set block driver read-only whitelist
                           (affects only QEMU, not qemu-img)
  --enable-trace-backends=B Set trace backend
                           Available backends: $($python $source_path/scripts/tracetool.py --list-backends)
  --with-trace-file=NAME   Full PATH,NAME of file to store traces
                           Default:trace-<pid>
  --disable-slirp          disable SLIRP userspace network connectivity
  --enable-tcg-interpreter enable TCG with bytecode interpreter (TCI)
  --oss-lib                path to OSS library
  --cpu=CPU                Build for host CPU [$cpu]
  --with-coroutine=BACKEND coroutine backend. Supported options:
                           gthread, ucontext, sigaltstack, windows
  --enable-gcov            enable test coverage analysis with gcov
  --gcov=GCOV              use specified gcov [$gcov_tool]
  --disable-blobs          disable installing provided firmware blobs
  --with-vss-sdk=SDK-path  enable Windows VSS support in QEMU Guest Agent
  --with-win-sdk=SDK-path  path to Windows Platform SDK (to build VSS .tlb)

Optional features, enabled with --enable-FEATURE and
disabled with --disable-FEATURE, default is enabled if available:

  system          all system emulation targets
  user            supported user emulation targets
  linux-user      all linux usermode emulation targets
  bsd-user        all BSD usermode emulation targets
  docs            build documentation
  guest-agent     build the QEMU Guest Agent
  guest-agent-msi build guest agent Windows MSI installation package
  pie             Position Independent Executables
  modules         modules support
  debug-tcg       TCG debugging (default is disabled)
  debug-info      debugging information
  sparse          sparse checker

  gnutls          GNUTLS cryptography support
  nettle          nettle cryptography support
  gcrypt          libgcrypt cryptography support
  sdl             SDL UI
  --with-sdlabi     select preferred SDL ABI 1.2 or 2.0
  gtk             gtk UI
  --with-gtkabi     select preferred GTK ABI 2.0 or 3.0
  vte             vte support for the gtk UI
  curses          curses UI
  vnc             VNC UI support
  vnc-sasl        SASL encryption for VNC server
  vnc-jpeg        JPEG lossy compression for VNC server
  vnc-png         PNG compression for VNC server
  cocoa           Cocoa UI (Mac OS X only)
  virtfs          VirtFS
  xen             xen backend driver support
  xen-pci-passthrough
  brlapi          BrlAPI (Braile)
  curl            curl connectivity
  fdt             fdt device tree
  bluez           bluez stack connectivity
  kvm             KVM acceleration support
  rdma            RDMA-based migration support
  uuid            uuid support
  vde             support for vde network
  netmap          support for netmap network
  linux-aio       Linux AIO support
  cap-ng          libcap-ng support
  attr            attr and xattr support
  vhost-net       vhost-net acceleration support
  spice           spice
  rbd             rados block device (rbd)
  libiscsi        iscsi support
  libnfs          nfs support
  smartcard       smartcard support (libcacard)
  libusb          libusb (for usb passthrough)
  usb-redir       usb network redirection support
  lzo             support of lzo compression library
  snappy          support of snappy compression library
  bzip2           support of bzip2 compression library
                  (for reading bzip2-compressed dmg images)
  seccomp         seccomp support
  coroutine-pool  coroutine freelist (better performance)
  glusterfs       GlusterFS backend
  archipelago     Archipelago backend
  tpm             TPM support
  libssh2         ssh block device support
  vhdx            support for the Microsoft VHDX image format
  numa            libnuma support
  tcmalloc        tcmalloc support
  jemalloc        jemalloc support

NOTE: The object files are built at the place where configure is launched
EOF
exit 0
fi

# Now we have handled --enable-tcg-interpreter and know we're not just
# printing the help message, bail out if the host CPU isn't supported.
if test "$ARCH" = "unknown"; then
    if test "$tcg_interpreter" = "yes" ; then
        echo "Unsupported CPU = $cpu, will use TCG with TCI (experimental)"
        ARCH=tci
    else
        error_exit "Unsupported CPU = $cpu, try --enable-tcg-interpreter"
    fi
fi

# Consult white-list to determine whether to enable werror
# by default.  Only enable by default for git builds
z_version=`cut -f3 -d. $source_path/VERSION`

if test -z "$werror" ; then
    if test -d "$source_path/.git" -a \
        "$linux" = "yes" ; then
        werror="yes"
    else
        werror="no"
    fi
fi

# check that the C compiler works.
write_c_skeleton;
if compile_object ; then
  : C compiler works ok
else
    error_exit "\"$cc\" either does not exist or does not work"
fi
if ! compile_prog ; then
    error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
fi

# Check that the C++ compiler exists and works with the C compiler
if has $cxx; then
    cat > $TMPC <<EOF
int c_function(void);
int main(void) { return c_function(); }
EOF

    compile_object

    cat > $TMPCXX <<EOF
extern "C" {
   int c_function(void);
}
int c_function(void) { return 42; }
EOF

    update_cxxflags

    if do_cxx $QEMU_CXXFLAGS -o $TMPE $TMPCXX $TMPO $LDFLAGS; then
        # C++ compiler $cxx works ok with C compiler $cc
        :
    else
        echo "C++ compiler $cxx does not work with C compiler $cc"
        echo "Disabling C++ specific optional code"
        cxx=
    fi
else
    echo "No C++ compiler available; disabling C++ specific optional code"
    cxx=
fi

gcc_flags="-Wold-style-declaration -Wold-style-definition -Wtype-limits"
gcc_flags="-Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers $gcc_flags"
gcc_flags="-Wmissing-include-dirs -Wempty-body -Wnested-externs $gcc_flags"
gcc_flags="-Wendif-labels $gcc_flags"
gcc_flags="-Wno-initializer-overrides $gcc_flags"
gcc_flags="-Wno-string-plus-int $gcc_flags"
# Note that we do not add -Werror to gcc_flags here, because that would
# enable it for all configure tests. If a configure test failed due
# to -Werror this would just silently disable some features,
# so it's too error prone.

cc_has_warning_flag() {
    write_c_skeleton;

    # Use the positive sense of the flag when testing for -Wno-wombat
    # support (gcc will happily accept the -Wno- form of unknown
    # warning options).
    optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
    compile_prog "-Werror $optflag" ""
}

for flag in $gcc_flags; do
    if cc_has_warning_flag $flag ; then
        QEMU_CFLAGS="$QEMU_CFLAGS $flag"
    fi
done

if test "$stack_protector" != "no"; then
  cat > $TMPC << EOF
int main(int argc, char *argv[])
{
    char arr[64], *p = arr, *c = argv[0];
    while (*c) {
        *p++ = *c++;
    }
    return 0;
}
EOF
  gcc_flags="-fstack-protector-strong -fstack-protector-all"
  sp_on=0
  for flag in $gcc_flags; do
    # We need to check both a compile and a link, since some compiler
    # setups fail only on a .c->.o compile and some only at link time
    if do_cc $QEMU_CFLAGS -Werror $flag -c -o $TMPO $TMPC &&
       compile_prog "-Werror $flag" ""; then
      QEMU_CFLAGS="$QEMU_CFLAGS $flag"
      sp_on=1
      break
    fi
  done
  if test "$stack_protector" = yes; then
    if test $sp_on = 0; then
      error_exit "Stack protector not supported"
    fi
  fi
fi

# Workaround for http://gcc.gnu.org/PR55489.  Happens with -fPIE/-fPIC and
# large functions that use global variables.  The bug is in all releases of
# GCC, but it became particularly acute in 4.6.x and 4.7.x.  It is fixed in
# 4.7.3 and 4.8.0.  We should be able to delete this at the end of 2013.
cat > $TMPC << EOF
#if __GNUC__ == 4 && (__GNUC_MINOR__ == 6 || (__GNUC_MINOR__ == 7 && __GNUC_PATCHLEVEL__ <= 2))
int main(void) { return 0; }
#else
#error No bug in this compiler.
#endif
EOF
if compile_prog "-Werror -fno-gcse" "" ; then
  TRANSLATE_OPT_CFLAGS=-fno-gcse
fi

if test "$static" = "yes" ; then
  if test "$modules" = "yes" ; then
    error_exit "static and modules are mutually incompatible"
  fi
  if test "$pie" = "yes" ; then
    error_exit "static and pie are mutually incompatible"
  else
    pie="no"
  fi
fi

# Unconditional check for compiler __thread support
  cat > $TMPC << EOF
static __thread int tls_var;
int main(void) { return tls_var; }
EOF

if ! compile_prog "-Werror" "" ; then
    error_exit "Your compiler does not support the __thread specifier for " \
	"Thread-Local Storage (TLS). Please upgrade to a version that does."
fi

if test "$pie" = ""; then
  case "$cpu-$targetos" in
    i386-Linux|x86_64-Linux|x32-Linux|i386-OpenBSD|x86_64-OpenBSD)
      ;;
    *)
      pie="no"
      ;;
  esac
fi

if test "$pie" != "no" ; then
  cat > $TMPC << EOF

#ifdef __linux__
#  define THREAD __thread
#else
#  define THREAD
#endif

static THREAD int tls_var;

int main(void) { return tls_var; }

EOF
  if compile_prog "-fPIE -DPIE" "-pie"; then
    QEMU_CFLAGS="-fPIE -DPIE $QEMU_CFLAGS"
    LDFLAGS="-pie $LDFLAGS"
    pie="yes"
    if compile_prog "" "-Wl,-z,relro -Wl,-z,now" ; then
      LDFLAGS="-Wl,-z,relro -Wl,-z,now $LDFLAGS"
    fi
  else
    if test "$pie" = "yes"; then
      error_exit "PIE not available due to missing toolchain support"
    else
      echo "Disabling PIE due to missing toolchain support"
      pie="no"
    fi
  fi

  if compile_prog "-Werror -fno-pie" "-nopie"; then
    CFLAGS_NOPIE="-fno-pie"
    LDFLAGS_NOPIE="-nopie"
  fi
fi

##########################################
# __sync_fetch_and_and requires at least -march=i486. Many toolchains
# use i686 as default anyway, but for those that don't, an explicit
# specification is necessary

if test "$cpu" = "i386"; then
  cat > $TMPC << EOF
static int sfaa(int *ptr)
{
  return __sync_fetch_and_and(ptr, 0);
}

int main(void)
{
  int val = 42;
  val = __sync_val_compare_and_swap(&val, 0, 1);
  sfaa(&val);
  return val;
}
EOF
  if ! compile_prog "" "" ; then
    QEMU_CFLAGS="-march=i486 $QEMU_CFLAGS"
  fi
fi

#########################################
# Solaris specific configure tool chain decisions

if test "$solaris" = "yes" ; then
  if has $install; then
    :
  else
    error_exit "Solaris install program not found. Use --install=/usr/ucb/install or" \
        "install fileutils from www.blastwave.org using pkg-get -i fileutils" \
        "to get ginstall which is used by default (which lives in /opt/csw/bin)"
  fi
  if test "`path_of $install`" = "/usr/sbin/install" ; then
    error_exit "Solaris /usr/sbin/install is not an appropriate install program." \
        "try ginstall from the GNU fileutils available from www.blastwave.org" \
        "using pkg-get -i fileutils, or use --install=/usr/ucb/install"
  fi
  if has ar; then
    :
  else
    if test -f /usr/ccs/bin/ar ; then
      error_exit "No path includes ar" \
          "Add /usr/ccs/bin to your path and rerun configure"
    fi
    error_exit "No path includes ar"
  fi
fi

if test -z "${target_list+xxx}" ; then
    target_list="$default_target_list"
else
    target_list=`echo "$target_list" | sed -e 's/,/ /g'`
fi

# Check that we recognised the target name; this allows a more
# friendly error message than if we let it fall through.
for target in $target_list; do
    case " $default_target_list " in
        *" $target "*)
            ;;
        *)
            error_exit "Unknown target name '$target'"
            ;;
    esac
done

# see if system emulation was really requested
case " $target_list " in
  *"-softmmu "*) softmmu=yes
  ;;
  *) softmmu=no
  ;;
esac

feature_not_found() {
  feature=$1
  remedy=$2

  error_exit "User requested feature $feature" \
      "configure was not able to find it." \
      "$remedy"
}

# ---
# big/little endian test
cat > $TMPC << EOF
short big_endian[] = { 0x4269, 0x4765, 0x4e64, 0x4961, 0x4e00, 0, };
short little_endian[] = { 0x694c, 0x7454, 0x654c, 0x6e45, 0x6944, 0x6e41, 0, };
extern int foo(short *, short *);
int main(int argc, char *argv[]) {
    return foo(big_endian, little_endian);
}
EOF

if compile_object ; then
    if grep -q BiGeNdIaN $TMPO ; then
        bigendian="yes"
    elif grep -q LiTtLeEnDiAn $TMPO ; then
        bigendian="no"
    else
        echo big/little test failed
    fi
else
    echo big/little test failed
fi

##########################################
# cocoa implies not SDL or GTK
# (the cocoa UI code currently assumes it is always the active UI
# and doesn't interact well with other UI frontend code)
if test "$cocoa" = "yes"; then
    if test "$sdl" = "yes"; then
        error_exit "Cocoa and SDL UIs cannot both be enabled at once"
    fi
    if test "$gtk" = "yes"; then
        error_exit "Cocoa and GTK UIs cannot both be enabled at once"
    fi
    gtk=no
    sdl=no
fi

##########################################
# L2TPV3 probe

cat > $TMPC <<EOF
#include <sys/socket.h>
#include <linux/ip.h>
int main(void) { return sizeof(struct mmsghdr); }
EOF
if compile_prog "" "" ; then
  l2tpv3=yes
else
  l2tpv3=no
fi

##########################################
# MinGW / Mingw-w64 localtime_r/gmtime_r check

if test "$mingw32" = "yes"; then
    # Some versions of MinGW / Mingw-w64 lack localtime_r
    # and gmtime_r entirely.
    #
    # Some versions of Mingw-w64 define a macro for
    # localtime_r/gmtime_r.
    #
    # Some versions of Mingw-w64 will define functions
    # for localtime_r/gmtime_r, but only if you have
    # _POSIX_THREAD_SAFE_FUNCTIONS defined. For fun
    # though, unistd.h and pthread.h both define
    # that for you.
    #
    # So this #undef localtime_r and #include <unistd.h>
    # are not in fact redundant.
cat > $TMPC << EOF
#include <unistd.h>
#include <time.h>
#undef localtime_r
int main(void) { localtime_r(NULL, NULL); return 0; }
EOF
    if compile_prog "" "" ; then
        localtime_r="yes"
    else
        localtime_r="no"
    fi
fi

##########################################
# pkg-config probe

if ! has "$pkg_config_exe"; then
  error_exit "pkg-config binary '$pkg_config_exe' not found"
fi

##########################################
# NPTL probe

if test "$linux_user" = "yes"; then
  cat > $TMPC <<EOF
#include <sched.h>
#include <linux/futex.h>
int main(void) {
#if !defined(CLONE_SETTLS) || !defined(FUTEX_WAIT)
#error bork
#endif
  return 0;
}
EOF
  if ! compile_object ; then
    feature_not_found "nptl" "Install glibc and linux kernel headers."
  fi
fi

##########################################
# avx2 optimization requirement check

cat > $TMPC << EOF
static void bar(void) {}
static void *bar_ifunc(void) {return (void*) bar;}
static void foo(void) __attribute__((ifunc("bar_ifunc")));
int main(void) { foo(); return 0; }
EOF
if compile_prog "-mavx2" "" ; then
    if readelf --syms $TMPE |grep "IFUNC.*foo" >/dev/null 2>&1; then
        avx2_opt="yes"
    fi
fi

#########################################
# zlib check

if test "$zlib" != "no" ; then
    cat > $TMPC << EOF
#include <zlib.h>
int main(void) { zlibVersion(); return 0; }
EOF
    if compile_prog "" "-lz" ; then
        :
    else
        error_exit "zlib check failed" \
            "Make sure to have the zlib libs and headers installed."
    fi
fi
LIBS="$LIBS -lz"

##########################################
# lzo check

if test "$lzo" != "no" ; then
    cat > $TMPC << EOF
#include <lzo/lzo1x.h>
int main(void) { lzo_version(); return 0; }
EOF
    if compile_prog "" "-llzo2" ; then
        libs_softmmu="$libs_softmmu -llzo2"
        lzo="yes"
    else
        if test "$lzo" = "yes"; then
            feature_not_found "liblzo2" "Install liblzo2 devel"
        fi
        lzo="no"
    fi
fi

##########################################
# snappy check

if test "$snappy" != "no" ; then
    cat > $TMPC << EOF
#include <snappy-c.h>
int main(void) { snappy_max_compressed_length(4096); return 0; }
EOF
    if compile_prog "" "-lsnappy" ; then
        libs_softmmu="$libs_softmmu -lsnappy"
        snappy="yes"
    else
        if test "$snappy" = "yes"; then
            feature_not_found "libsnappy" "Install libsnappy devel"
        fi
        snappy="no"
    fi
fi

##########################################
# bzip2 check

if test "$bzip2" != "no" ; then
    cat > $TMPC << EOF
#include <bzlib.h>
int main(void) { BZ2_bzlibVersion(); return 0; }
EOF
    if compile_prog "" "-lbz2" ; then
        bzip2="yes"
    else
        if test "$bzip2" = "yes"; then
            feature_not_found "libbzip2" "Install libbzip2 devel"
        fi
        bzip2="no"
    fi
fi

##########################################
# libseccomp check

if test "$seccomp" != "no" ; then
    case "$cpu" in
    i386|x86_64)
        libseccomp_minver="2.1.0"
        ;;
    arm|aarch64)
        libseccomp_minver="2.2.3"
        ;;
    *)
        libseccomp_minver=""
        ;;
    esac

    if test "$libseccomp_minver" != "" &&
       $pkg_config --atleast-version=$libseccomp_minver libseccomp ; then
        libs_softmmu="$libs_softmmu `$pkg_config --libs libseccomp`"
        QEMU_CFLAGS="$QEMU_CFLAGS `$pkg_config --cflags libseccomp`"
        seccomp="yes"
    else
        if test "$seccomp" = "yes" ; then
            if test "$libseccomp_minver" != "" ; then
                feature_not_found "libseccomp" \
                    "Install libseccomp devel >= $libseccomp_minver"
            else
                feature_not_found "libseccomp" \
                    "libseccomp is not supported for host cpu $cpu"
            fi
        fi
        seccomp="no"
    fi
fi
##########################################
# xen probe

if test "$xen" != "no" ; then
  xen_libs="-lxenstore -lxenctrl -lxenguest"
  xen_stable_libs="-lxenforeignmemory -lxengnttab -lxenevtchn"

  # First we test whether Xen headers and libraries are available.
  # If no, we are done and there is no Xen support.
  # If yes, more tests are run to detect the Xen version.

  # Xen (any)
  cat > $TMPC <<EOF
#include <xenctrl.h>
int main(void) {
  return 0;
}
EOF
  if ! compile_prog "" "$xen_libs" ; then
    # Xen not found
    if test "$xen" = "yes" ; then
      feature_not_found "xen" "Install xen devel"
    fi
    xen=no

  # Xen unstable
  elif
      cat > $TMPC <<EOF &&
/*
 * If we have stable libs the we don't want the libxc compat
 * layers, regardless of what CFLAGS we may have been given.
 */
#undef XC_WANT_COMPAT_EVTCHN_API
#undef XC_WANT_COMPAT_GNTTAB_API
#undef XC_WANT_COMPAT_MAP_FOREIGN_API
#include <xenctrl.h>
#include <xenstore.h>
#include <xenevtchn.h>
#include <xengnttab.h>
#include <xenforeignmemory.h>
#include <stdint.h>
#include <xen/hvm/hvm_info_table.h>
#if !defined(HVM_MAX_VCPUS)
# error HVM_MAX_VCPUS not defined
#endif
int main(void) {
  xc_interface *xc = NULL;
  xenforeignmemory_handle *xfmem;
  xenevtchn_handle *xe;
  xengnttab_handle *xg;
  xen_domain_handle_t handle;

  xs_daemon_open();

  xc = xc_interface_open(0, 0, 0);
  xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
  xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
  xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
  xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
  xc_domain_create(xc, 0, handle, 0, NULL, NULL);

  xfmem = xenforeignmemory_open(0, 0);
  xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);

  xe = xenevtchn_open(0, 0);
  xenevtchn_fd(xe);

  xg = xengnttab_open(0, 0);
  xengnttab_map_grant_ref(xg, 0, 0, 0);

  return 0;
}
EOF
      compile_prog "" "$xen_libs $xen_stable_libs"
    then
    xen_ctrl_version=471
    xen=yes
  elif
      cat > $TMPC <<EOF &&
#include <xenctrl.h>
#include <stdint.h>
int main(void) {
  xc_interface *xc = NULL;
  xen_domain_handle_t handle;
  xc_domain_create(xc, 0, handle, 0, NULL, NULL);
  return 0;
}
EOF
      compile_prog "" "$xen_libs"
    then
    xen_ctrl_version=470
    xen=yes

  # Xen 4.6
  elif
      cat > $TMPC <<EOF &&
#include <xenctrl.h>
#include <xenstore.h>
#include <stdint.h>
#include <xen/hvm/hvm_info_table.h>
#if !defined(HVM_MAX_VCPUS)
# error HVM_MAX_VCPUS not defined
#endif
int main(void) {
  xc_interface *xc;
  xs_daemon_open();
  xc = xc_interface_open(0, 0, 0);
  xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
  xc_gnttab_open(NULL, 0);
  xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
  xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
  xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
  xc_reserved_device_memory_map(xc, 0, 0, 0, 0, NULL, 0);
  return 0;
}
EOF
      compile_prog "" "$xen_libs"
    then
    xen_ctrl_version=460
    xen=yes

  # Xen 4.5
  elif
      cat > $TMPC <<EOF &&
#include <xenctrl.h>
#include <xenstore.h>
#include <stdint.h>
#include <xen/hvm/hvm_info_table.h>
#if !defined(HVM_MAX_VCPUS)
# error HVM_MAX_VCPUS not defined
#endif
int main(void) {
  xc_interface *xc;
  xs_daemon_open();
  xc = xc_interface_open(0, 0, 0);
  xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
  xc_gnttab_open(NULL, 0);
  xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
  xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
  xc_hvm_create_ioreq_server(xc, 0, 0, NULL);
  return 0;
}
EOF
      compile_prog "" "$xen_libs"
    then
    xen_ctrl_version=450
    xen=yes

  elif
      cat > $TMPC <<EOF &&
#include <xenctrl.h>
#include <xenstore.h>
#include <stdint.h>
#include <xen/hvm/hvm_info_table.h>
#if !defined(HVM_MAX_VCPUS)
# error HVM_MAX_VCPUS not defined
#endif
int main(void) {
  xc_interface *xc;
  xs_daemon_open();
  xc = xc_interface_open(0, 0, 0);
  xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
  xc_gnttab_open(NULL, 0);
  xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
  xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
  return 0;
}
EOF
      compile_prog "" "$xen_libs"
    then
    xen_ctrl_version=420
    xen=yes

  else
    if test "$xen" = "yes" ; then
      feature_not_found "xen (unsupported version)" \
                        "Install a supported xen (xen 4.2 or newer)"
    fi
    xen=no
  fi

  if test "$xen" = yes; then
    if test $xen_ctrl_version -ge 471  ; then
      libs_softmmu="$xen_stable_libs $libs_softmmu"
    fi
    libs_softmmu="$xen_libs $libs_softmmu"
  fi
fi

if test "$xen_pci_passthrough" != "no"; then
  if test "$xen" = "yes" && test "$linux" = "yes"; then
    xen_pci_passthrough=yes
  else
    if test "$xen_pci_passthrough" = "yes"; then
      error_exit "User requested feature Xen PCI Passthrough" \
          " but this feature requires /sys from Linux"
    fi
    xen_pci_passthrough=no
  fi
fi

if test "$xen_pv_domain_build" = "yes" &&
   test "$xen" != "yes"; then
    error_exit "User requested Xen PV domain builder support" \
	       "which requires Xen support."
fi

##########################################
# Sparse probe
if test "$sparse" != "no" ; then
  if has cgcc; then
    sparse=yes
  else
    if test "$sparse" = "yes" ; then
      feature_not_found "sparse" "Install sparse binary"
    fi
    sparse=no
  fi
fi

##########################################
# X11 probe
x11_cflags=
x11_libs=-lX11
if $pkg_config --exists "x11"; then
    x11_cflags=`$pkg_config --cflags x11`
    x11_libs=`$pkg_config --libs x11`
fi

##########################################
# GTK probe

if test "$gtkabi" = ""; then
    # The GTK ABI was not specified explicitly, so try whether 2.0 is available.
    # Use 3.0 as a fallback if that is available.
    if $pkg_config --exists "gtk+-2.0 >= 2.18.0"; then
        gtkabi=2.0
    elif $pkg_config --exists "gtk+-3.0 >= 3.0.0"; then
        gtkabi=3.0
    else
        gtkabi=2.0
    fi
fi

if test "$gtk" != "no"; then
    gtkpackage="gtk+-$gtkabi"
    gtkx11package="gtk+-x11-$gtkabi"
    if test "$gtkabi" = "3.0" ; then
      gtkversion="3.0.0"
    else
      gtkversion="2.18.0"
    fi
    if $pkg_config --exists "$gtkpackage >= $gtkversion"; then
        gtk_cflags=`$pkg_config --cflags $gtkpackage`
        gtk_libs=`$pkg_config --libs $gtkpackage`
        if $pkg_config --exists "$gtkx11package >= $gtkversion"; then
            gtk_cflags="$gtk_cflags $x11_cflags"
            gtk_libs="$gtk_libs $x11_libs"
        fi
        libs_softmmu="$gtk_libs $libs_softmmu"
        gtk="yes"
    elif test "$gtk" = "yes"; then
        feature_not_found "gtk" "Install gtk2 or gtk3 devel"
    else
        gtk="no"
    fi
fi


##########################################
# GNUTLS probe

gnutls_works() {
    # Unfortunately some distros have bad pkg-config information for gnutls
    # such that it claims to exist but you get a compiler error if you try
    # to use the options returned by --libs. Specifically, Ubuntu for --static
    # builds doesn't work:
    # https://bugs.launchpad.net/ubuntu/+source/gnutls26/+bug/1478035
    #
    # So sanity check the cflags/libs before assuming gnutls can be used.
    if ! $pkg_config --exists "gnutls"; then
        return 1
    fi

    write_c_skeleton
    compile_prog "$($pkg_config --cflags gnutls)" "$($pkg_config --libs gnutls)"
}

gnutls_gcrypt=no
gnutls_nettle=no
if test "$gnutls" != "no"; then
    if gnutls_works; then
        gnutls_cflags=`$pkg_config --cflags gnutls`
        gnutls_libs=`$pkg_config --libs gnutls`
        libs_softmmu="$gnutls_libs $libs_softmmu"
        libs_tools="$gnutls_libs $libs_tools"
	QEMU_CFLAGS="$QEMU_CFLAGS $gnutls_cflags"
        gnutls="yes"

	# gnutls_hash_init requires >= 2.9.10
	if $pkg_config --exists "gnutls >= 2.9.10"; then
            gnutls_hash="yes"
	else
	    gnutls_hash="no"
	fi

	if $pkg_config --exists 'gnutls >= 3.0'; then
	    gnutls_gcrypt=no
	    gnutls_nettle=yes
	elif $pkg_config --exists 'gnutls >= 2.12'; then
	    case `$pkg_config --libs --static gnutls` in
		*gcrypt*)
		    gnutls_gcrypt=yes
		    gnutls_nettle=no
		    ;;
		*nettle*)
		    gnutls_gcrypt=no
		    gnutls_nettle=yes
		    ;;
		*)
		    gnutls_gcrypt=yes
		    gnutls_nettle=no
		    ;;
	    esac
	else
	    gnutls_gcrypt=yes
	    gnutls_nettle=no
	fi
    elif test "$gnutls" = "yes"; then
	feature_not_found "gnutls" "Install gnutls devel"
    else
        gnutls="no"
        gnutls_hash="no"
    fi
else
    gnutls_hash="no"
fi


# If user didn't give a --disable/enable-gcrypt flag,
# then mark as disabled if user requested nettle
# explicitly, or if gnutls links to nettle
if test -z "$gcrypt"
then
    if test "$nettle" = "yes" || test "$gnutls_nettle" = "yes"
    then
        gcrypt="no"
    fi
fi

# If user didn't give a --disable/enable-nettle flag,
# then mark as disabled if user requested gcrypt
# explicitly, or if gnutls links to gcrypt
if test -z "$nettle"
then
    if test "$gcrypt" = "yes" || test "$gnutls_gcrypt" = "yes"
    then
        nettle="no"
    fi
fi

has_libgcrypt_config() {
    if ! has "libgcrypt-config"
    then
	return 1
    fi

    if test -n "$cross_prefix"
    then
	host=`libgcrypt-config --host`
	if test "$host-" != $cross_prefix
	then
	    return 1
	fi
    fi

    return 0
}

if test "$gcrypt" != "no"; then
    if has_libgcrypt_config; then
        gcrypt_cflags=`libgcrypt-config --cflags`
        gcrypt_libs=`libgcrypt-config --libs`
        # Debian has remove -lgpg-error from libgcrypt-config
        # as it "spreads unnecessary dependencies" which in
        # turn breaks static builds...
        if test "$static" = "yes"
        then
            gcrypt_libs="$gcrypt_libs -lgpg-error"
        fi
        libs_softmmu="$gcrypt_libs $libs_softmmu"
        libs_tools="$gcrypt_libs $libs_tools"
        QEMU_CFLAGS="$QEMU_CFLAGS $gcrypt_cflags"
        gcrypt="yes"
        if test -z "$nettle"; then
           nettle="no"
        fi
    else
        if test "$gcrypt" = "yes"; then
            feature_not_found "gcrypt" "Install gcrypt devel"
        else
            gcrypt="no"
        fi
    fi
fi


if test "$nettle" != "no"; then
    if $pkg_config --exists "nettle"; then
        nettle_cflags=`$pkg_config --cflags nettle`
        nettle_libs=`$pkg_config --libs nettle`
        nettle_version=`$pkg_config --modversion nettle`
        libs_softmmu="$nettle_libs $libs_softmmu"
        libs_tools="$nettle_libs $libs_tools"
        QEMU_CFLAGS="$QEMU_CFLAGS $nettle_cflags"
        nettle="yes"
    else
        if test "$nettle" = "yes"; then
            feature_not_found "nettle" "Install nettle devel"
        else
            nettle="no"
        fi
    fi
fi

if test "$gcrypt" = "yes" && test "$nettle" = "yes"
then
    error_exit "Only one of gcrypt & nettle can be enabled"
fi

##########################################
# libtasn1 - only for the TLS creds/session test suite

tasn1=yes
tasn1_cflags=""
tasn1_libs=""
if $pkg_config --exists "libtasn1"; then
    tasn1_cflags=`$pkg_config --cflags libtasn1`
    tasn1_libs=`$pkg_config --libs libtasn1`
else
    tasn1=no
fi


##########################################
# getifaddrs (for tests/test-io-channel-socket )

have_ifaddrs_h=yes
if ! check_include "ifaddrs.h" ; then
  have_ifaddrs_h=no
fi

##########################################
# VTE probe

if test "$vte" != "no"; then
    if test "$gtkabi" = "3.0"; then
      vtepackage="vte-2.90"
      vteversion="0.32.0"
    else
      vtepackage="vte"
      vteversion="0.24.0"
    fi
    if $pkg_config --exists "$vtepackage >= $vteversion"; then
        vte_cflags=`$pkg_config --cflags $vtepackage`
        vte_libs=`$pkg_config --libs $vtepackage`
        libs_softmmu="$vte_libs $libs_softmmu"
        vte="yes"
    elif test "$vte" = "yes"; then
        if test "$gtkabi" = "3.0"; then
            feature_not_found "vte" "Install libvte-2.90 devel"
        else
            feature_not_found "vte" "Install libvte devel"
        fi
    else
        vte="no"
    fi
fi

##########################################
# SDL probe

# Look for sdl configuration program (pkg-config or sdl-config).  Try
# sdl-config even without cross prefix, and favour pkg-config over sdl-config.

if test $sdlabi = "2.0"; then
    sdl_config=$sdl2_config
    sdlname=sdl2
    sdlconfigname=sdl2_config
else
    sdlname=sdl
    sdlconfigname=sdl_config
fi

if test "`basename $sdl_config`" != $sdlconfigname && ! has ${sdl_config}; then
  sdl_config=$sdlconfigname
fi

if $pkg_config $sdlname --exists; then
  sdlconfig="$pkg_config $sdlname"
  _sdlversion=`$sdlconfig --modversion 2>/dev/null | sed 's/[^0-9]//g'`
elif has ${sdl_config}; then
  sdlconfig="$sdl_config"
  _sdlversion=`$sdlconfig --version | sed 's/[^0-9]//g'`
else
  if test "$sdl" = "yes" ; then
    feature_not_found "sdl" "Install SDL devel"
  fi
  sdl=no
fi
if test -n "$cross_prefix" && test "$(basename "$sdlconfig")" = sdl-config; then
  echo warning: using "\"$sdlconfig\"" to detect cross-compiled sdl >&2
fi

sdl_too_old=no
if test "$sdl" != "no" ; then
  cat > $TMPC << EOF
#include <SDL.h>
#undef main /* We don't want SDL to override our main() */
int main( void ) { return SDL_Init (SDL_INIT_VIDEO); }
EOF
  sdl_cflags=`$sdlconfig --cflags 2> /dev/null`
  if test "$static" = "yes" ; then
    sdl_libs=`$sdlconfig --static-libs 2>/dev/null`
  else
    sdl_libs=`$sdlconfig --libs 2> /dev/null`
  fi
  if compile_prog "$sdl_cflags" "$sdl_libs" ; then
    if test "$_sdlversion" -lt 121 ; then
      sdl_too_old=yes
    else
      sdl=yes
    fi

    # static link with sdl ? (note: sdl.pc's --static --libs is broken)
    if test "$sdl" = "yes" -a "$static" = "yes" ; then
      if test $? = 0 && echo $sdl_libs | grep -- -laa > /dev/null; then
         sdl_libs="$sdl_libs `aalib-config --static-libs 2>/dev/null`"
         sdl_cflags="$sdl_cflags `aalib-config --cflags 2>/dev/null`"
      fi
      if compile_prog "$sdl_cflags" "$sdl_libs" ; then
	:
      else
        sdl=no
      fi
    fi # static link
  else # sdl not found
    if test "$sdl" = "yes" ; then
      feature_not_found "sdl" "Install SDL devel"
    fi
    sdl=no
  fi # sdl compile test
fi

if test "$sdl" = "yes" ; then
  cat > $TMPC <<EOF
#include <SDL.h>
#if defined(SDL_VIDEO_DRIVER_X11)
#include <X11/XKBlib.h>
#else
#error No x11 support
#endif
int main(void) { return 0; }
EOF
  if compile_prog "$sdl_cflags $x11_cflags" "$sdl_libs $x11_libs" ; then
    sdl_cflags="$sdl_cflags $x11_cflags"
    sdl_libs="$sdl_libs $x11_libs"
  fi
  libs_softmmu="$sdl_libs $libs_softmmu"
fi

##########################################
# RDMA needs OpenFabrics libraries
if test "$rdma" != "no" ; then
  cat > $TMPC <<EOF
#include <rdma/rdma_cma.h>
int main(void) { return 0; }
EOF
  rdma_libs="-lrdmacm -libverbs"
  if compile_prog "" "$rdma_libs" ; then
    rdma="yes"
    libs_softmmu="$libs_softmmu $rdma_libs"
  else
    if test "$rdma" = "yes" ; then
        error_exit \
            " OpenFabrics librdmacm/libibverbs not present." \
            " Your options:" \
            "  (1) Fast: Install infiniband packages from your distro." \
            "  (2) Cleanest: Install libraries from www.openfabrics.org" \
            "  (3) Also: Install softiwarp if you don't have RDMA hardware"
    fi
    rdma="no"
  fi
fi


##########################################
# VNC SASL detection
if test "$vnc" = "yes" -a "$vnc_sasl" != "no" ; then
  cat > $TMPC <<EOF
#include <sasl/sasl.h>
#include <stdio.h>
int main(void) { sasl_server_init(NULL, "qemu"); return 0; }
EOF
  # Assuming Cyrus-SASL installed in /usr prefix
  vnc_sasl_cflags=""
  vnc_sasl_libs="-lsasl2"
  if compile_prog "$vnc_sasl_cflags" "$vnc_sasl_libs" ; then
    vnc_sasl=yes
    libs_softmmu="$vnc_sasl_libs $libs_softmmu"
    QEMU_CFLAGS="$QEMU_CFLAGS $vnc_sasl_cflags"
  else
    if test "$vnc_sasl" = "yes" ; then
      feature_not_found "vnc-sasl" "Install Cyrus SASL devel"
    fi
    vnc_sasl=no
  fi
fi

##########################################
# VNC JPEG detection
if test "$vnc" = "yes" -a "$vnc_jpeg" != "no" ; then
cat > $TMPC <<EOF
#include <stdio.h>
#include <jpeglib.h>
int main(void) { struct jpeg_compress_struct s; jpeg_create_compress(&s); return 0; }
EOF
    vnc_jpeg_cflags=""
    vnc_jpeg_libs="-ljpeg"
  if compile_prog "$vnc_jpeg_cflags" "$vnc_jpeg_libs" ; then
    vnc_jpeg=yes
    libs_softmmu="$vnc_jpeg_libs $libs_softmmu"
    QEMU_CFLAGS="$QEMU_CFLAGS $vnc_jpeg_cflags"
  else
    if test "$vnc_jpeg" = "yes" ; then
      feature_not_found "vnc-jpeg" "Install libjpeg-turbo devel"
    fi
    vnc_jpeg=no
  fi
fi

##########################################
# VNC PNG detection
if test "$vnc" = "yes" -a "$vnc_png" != "no" ; then
cat > $TMPC <<EOF
//#include <stdio.h>
#include <png.h>
#include <stddef.h>
int main(void) {
    png_structp png_ptr;
    png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
    return png_ptr != 0;
}
EOF
  if $pkg_config libpng --exists; then
    vnc_png_cflags=`$pkg_config libpng --cflags`
    vnc_png_libs=`$pkg_config libpng --libs`
  else
    vnc_png_cflags=""
    vnc_png_libs="-lpng"
  fi
  if compile_prog "$vnc_png_cflags" "$vnc_png_libs" ; then
    vnc_png=yes
    libs_softmmu="$vnc_png_libs $libs_softmmu"
    QEMU_CFLAGS="$QEMU_CFLAGS $vnc_png_cflags"
  else
    if test "$vnc_png" = "yes" ; then
      feature_not_found "vnc-png" "Install libpng devel"
    fi
    vnc_png=no
  fi
fi

##########################################
# fnmatch() probe, used for ACL routines
fnmatch="no"
cat > $TMPC << EOF
#include <fnmatch.h>
int main(void)
{
    fnmatch("foo", "foo", 0);
    return 0;
}
EOF
if compile_prog "" "" ; then
   fnmatch="yes"
fi

##########################################
# uuid_generate() probe, used for vdi block driver
# Note that on some systems (notably MacOSX) no extra library
# need be linked to get the uuid functions.
if test "$uuid" != "no" ; then
  uuid_libs="-luuid"
  cat > $TMPC << EOF
#include <uuid/uuid.h>
int main(void)
{
    uuid_t my_uuid;
    uuid_generate(my_uuid);
    return 0;
}
EOF
  if compile_prog "" "" ; then
    uuid="yes"
  elif compile_prog "" "$uuid_libs" ; then
    uuid="yes"
    libs_softmmu="$uuid_libs $libs_softmmu"
    libs_tools="$uuid_libs $libs_tools"
  else
    if test "$uuid" = "yes" ; then
      feature_not_found "uuid" "Install libuuid devel"
    fi
    uuid=no
  fi
fi

if test "$vhdx" = "yes" ; then
    if test "$uuid" = "no" ; then
        error_exit "uuid required for VHDX support"
    fi
elif test "$vhdx" != "no" ; then
    if test "$uuid" = "yes" ; then
        vhdx=yes
    else
        vhdx=no
    fi
fi

##########################################
# xfsctl() probe, used for raw-posix
if test "$xfs" != "no" ; then
  cat > $TMPC << EOF
#include <stddef.h>  /* NULL */
#include <xfs/xfs.h>
int main(void)
{
    xfsctl(NULL, 0, 0, NULL);
    return 0;
}
EOF
  if compile_prog "" "" ; then
    xfs="yes"
  else
    if test "$xfs" = "yes" ; then
      feature_not_found "xfs" "Instal xfsprogs/xfslibs devel"
    fi
    xfs=no
  fi
fi

##########################################
# vde libraries probe
if test "$vde" != "no" ; then
  vde_libs="-lvdeplug"
  cat > $TMPC << EOF
#include <libvdeplug.h>
int main(void)
{
    struct vde_open_args a = {0, 0, 0};
    char s[] = "";
    vde_open(s, s, &a);
    return 0;
}
EOF
  if compile_prog "" "$vde_libs" ; then
    vde=yes
    libs_softmmu="$vde_libs $libs_softmmu"
    libs_tools="$vde_libs $libs_tools"
  else
    if test "$vde" = "yes" ; then
      feature_not_found "vde" "Install vde (Virtual Distributed Ethernet) devel"
    fi
    vde=no
  fi
fi

##########################################
# netmap support probe
# Apart from looking for netmap headers, we make sure that the host API version
# supports the netmap backend (>=11). The upper bound (15) is meant to simulate
# a minor/major version number. Minor new features will be marked with values up
# to 15, and if something happens that requires a change to the backend we will
# move above 15, submit the backend fixes and modify this two bounds.
if test "$netmap" != "no" ; then
  cat > $TMPC << EOF
#include <inttypes.h>
#include <net/if.h>
#include <net/netmap.h>
#include <net/netmap_user.h>
#if (NETMAP_API < 11) || (NETMAP_API > 15)
#error
#endif
int main(void) { return 0; }
EOF
  if compile_prog "" "" ; then
    netmap=yes
  else
    if test "$netmap" = "yes" ; then
      feature_not_found "netmap"
    fi
    netmap=no
  fi
fi

##########################################
# libcap-ng library probe
if test "$cap_ng" != "no" ; then
  cap_libs="-lcap-ng"
  cat > $TMPC << EOF
#include <cap-ng.h>
int main(void)
{
    capng_capability_to_name(CAPNG_EFFECTIVE);
    return 0;
}
EOF
  if compile_prog "" "$cap_libs" ; then
    cap_ng=yes
    libs_tools="$cap_libs $libs_tools"
  else
    if test "$cap_ng" = "yes" ; then
      feature_not_found "cap_ng" "Install libcap-ng devel"
    fi
    cap_ng=no
  fi
fi

##########################################
# Sound support libraries probe

audio_drv_probe()
{
    drv=$1
    hdr=$2
    lib=$3
    exp=$4
    cfl=$5
        cat > $TMPC << EOF
#include <$hdr>
int main(void) { $exp }
EOF
    if compile_prog "$cfl" "$lib" ; then
        :
    else
        error_exit "$drv check failed" \
            "Make sure to have the $drv libs and headers installed."
    fi
}

audio_drv_list=`echo "$audio_drv_list" | sed -e 's/,/ /g'`
for drv in $audio_drv_list; do
    case $drv in
    alsa)
    audio_drv_probe $drv alsa/asoundlib.h -lasound \
        "return snd_pcm_close((snd_pcm_t *)0);"
    libs_softmmu="-lasound $libs_softmmu"
    ;;

    pa)
    audio_drv_probe $drv pulse/mainloop.h "-lpulse" \
        "pa_mainloop *m = 0; pa_mainloop_free (m); return 0;"
    libs_softmmu="-lpulse $libs_softmmu"
    audio_pt_int="yes"
    ;;

    coreaudio)
      libs_softmmu="-framework CoreAudio $libs_softmmu"
    ;;

    dsound)
      libs_softmmu="-lole32 -ldxguid $libs_softmmu"
      audio_win_int="yes"
    ;;

    oss)
      libs_softmmu="$oss_lib $libs_softmmu"
    ;;

    sdl|wav)
    # XXX: Probes for CoreAudio, DirectSound, SDL(?)
    ;;

    *)
    echo "$audio_possible_drivers" | grep -q "\<$drv\>" || {
        error_exit "Unknown driver '$drv' selected" \
            "Possible drivers are: $audio_possible_drivers"
    }
    ;;
    esac
done

##########################################
# BrlAPI probe

if test "$brlapi" != "no" ; then
  brlapi_libs="-lbrlapi"
  cat > $TMPC << EOF
#include <brlapi.h>
#include <stddef.h>
int main( void ) { return brlapi__openConnection (NULL, NULL, NULL); }
EOF
  if compile_prog "" "$brlapi_libs" ; then
    brlapi=yes
    libs_softmmu="$brlapi_libs $libs_softmmu"
  else
    if test "$brlapi" = "yes" ; then
      feature_not_found "brlapi" "Install brlapi devel"
    fi
    brlapi=no
  fi
fi

##########################################
# curses probe
if test "$curses" != "no" ; then
  if test "$mingw32" = "yes" ; then
    curses_list="-lpdcurses"
  else
    curses_list="$($pkg_config --libs ncurses 2>/dev/null):-lncurses:-lcurses"
  fi
  curses_found=no
  cat > $TMPC << EOF
#include <curses.h>
int main(void) {
  const char *s = curses_version();
  resize_term(0, 0);
  return s != 0;
}
EOF
  IFS=:
  for curses_lib in $curses_list; do
    unset IFS
    if compile_prog "" "$curses_lib" ; then
      curses_found=yes
      libs_softmmu="$curses_lib $libs_softmmu"
      break
    fi
  done
  unset IFS
  if test "$curses_found" = "yes" ; then
    curses=yes
  else
    if test "$curses" = "yes" ; then
      feature_not_found "curses" "Install ncurses devel"
    fi
    curses=no
  fi
fi

##########################################
# curl probe
if test "$curl" != "no" ; then
  if $pkg_config libcurl --exists; then
    curlconfig="$pkg_config libcurl"
  else
    curlconfig=curl-config
  fi
  cat > $TMPC << EOF
#include <curl/curl.h>
int main(void) { curl_easy_init(); curl_multi_setopt(0, 0, 0); return 0; }
EOF
  curl_cflags=`$curlconfig --cflags 2>/dev/null`
  curl_libs=`$curlconfig --libs 2>/dev/null`
  if compile_prog "$curl_cflags" "$curl_libs" ; then
    curl=yes
  else
    if test "$curl" = "yes" ; then
      feature_not_found "curl" "Install libcurl devel"
    fi
    curl=no
  fi
fi # test "$curl"

##########################################
# bluez support probe
if test "$bluez" != "no" ; then
  cat > $TMPC << EOF
#include <bluetooth/bluetooth.h>
int main(void) { return bt_error(0); }
EOF
  bluez_cflags=`$pkg_config --cflags bluez 2> /dev/null`
  bluez_libs=`$pkg_config --libs bluez 2> /dev/null`
  if compile_prog "$bluez_cflags" "$bluez_libs" ; then
    bluez=yes
    libs_softmmu="$bluez_libs $libs_softmmu"
  else
    if test "$bluez" = "yes" ; then
      feature_not_found "bluez" "Install bluez-libs/libbluetooth devel"
    fi
    bluez="no"
  fi
fi

##########################################
# glib support probe

glib_req_ver=2.22
glib_modules=gthread-2.0
if test "$modules" = yes; then
    glib_modules="$glib_modules gmodule-2.0"
fi

for i in $glib_modules; do
    if $pkg_config --atleast-version=$glib_req_ver $i; then
        glib_cflags=`$pkg_config --cflags $i`
        glib_libs=`$pkg_config --libs $i`
        CFLAGS="$glib_cflags $CFLAGS"
        LIBS="$glib_libs $LIBS"
        libs_qga="$glib_libs $libs_qga"
    else
        error_exit "glib-$glib_req_ver $i is required to compile QEMU"
    fi
done

# Sanity check that the current size_t matches the
# size that glib thinks it should be. This catches
# problems on multi-arch where people try to build
# 32-bit QEMU while pointing at 64-bit glib headers
cat > $TMPC <<EOF
#include <glib.h>
#include <unistd.h>

#define QEMU_BUILD_BUG_ON(x) \
  typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));

int main(void) {
   QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
   return 0;
}
EOF

if ! compile_prog "-Werror $CFLAGS" "$LIBS" ; then
    error_exit "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T."\
               "You probably need to set PKG_CONFIG_LIBDIR"\
	       "to point to the right pkg-config files for your"\
	       "build target"
fi

# g_test_trap_subprocess added in 2.38. Used by some tests.
glib_subprocess=yes
if ! $pkg_config --atleast-version=2.38 glib-2.0; then
    glib_subprocess=no
fi

# Silence clang 3.5.0 warnings about glib attribute __alloc_size__ usage
cat > $TMPC << EOF
#include <glib.h>
int main(void) { return 0; }
EOF
if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
    if cc_has_warning_flag "-Wno-unknown-attributes"; then
        glib_cflags="-Wno-unknown-attributes $glib_cflags"
        CFLAGS="-Wno-unknown-attributes $CFLAGS"
    fi
fi

##########################################
# SHA command probe for modules
if test "$modules" = yes; then
    shacmd_probe="sha1sum sha1 shasum"
    for c in $shacmd_probe; do
        if has $c; then
            shacmd="$c"
            break
        fi
    done
    if test "$shacmd" = ""; then
        error_exit "one of the checksum commands is required to enable modules: $shacmd_probe"
    fi
fi

##########################################
# pixman support probe

if test "$pixman" = ""; then
  if test "$want_tools" = "no" -a "$softmmu" = "no"; then
    pixman="none"
  elif $pkg_config --atleast-version=0.21.8 pixman-1 > /dev/null 2>&1; then
    pixman="system"
  else
    pixman="internal"
  fi
fi
if test "$pixman" = "none"; then
  if test "$want_tools" != "no" -o "$softmmu" != "no"; then
    error_exit "pixman disabled but system emulation or tools build" \
        "enabled.  You can turn off pixman only if you also" \
        "disable all system emulation targets and the tools" \
        "build with '--disable-tools --disable-system'."
  fi
  pixman_cflags=
  pixman_libs=
elif test "$pixman" = "system"; then
  # pixman version has been checked above
  pixman_cflags=`$pkg_config --cflags pixman-1`
  pixman_libs=`$pkg_config --libs pixman-1`
else
  if test ! -d ${source_path}/pixman/pixman; then
    error_exit "pixman >= 0.21.8 not present. Your options:" \
        "  (1) Preferred: Install the pixman devel package (any recent" \
        "      distro should have packages as Xorg needs pixman too)." \
        "  (2) Fetch the pixman submodule, using:" \
        "      git submodule update --init pixman"
  fi
  mkdir -p pixman/pixman
  pixman_cflags="-I\$(SRC_PATH)/pixman/pixman -I\$(BUILD_DIR)/pixman/pixman"
  pixman_libs="-L\$(BUILD_DIR)/pixman/pixman/.libs -lpixman-1"
fi

##########################################
# libcap probe

if test "$cap" != "no" ; then
  cat > $TMPC <<EOF
#include <stdio.h>
#include <sys/capability.h>
int main(void) { cap_t caps; caps = cap_init(); return caps != NULL; }
EOF
  if compile_prog "" "-lcap" ; then
    cap=yes
  else
    cap=no
  fi
fi

##########################################
# pthread probe
PTHREADLIBS_LIST="-pthread -lpthread -lpthreadGC2"

pthread=no
cat > $TMPC << EOF
#include <pthread.h>
static void *f(void *p) { return NULL; }
int main(void) {
  pthread_t thread;
  pthread_create(&thread, 0, f, 0);
  return 0;
}
EOF
if compile_prog "" "" ; then
  pthread=yes
else
  for pthread_lib in $PTHREADLIBS_LIST; do
    if compile_prog "" "$pthread_lib" ; then
      pthread=yes
      found=no
      for lib_entry in $LIBS; do
        if test "$lib_entry" = "$pthread_lib"; then
          found=yes
          break
        fi
      done
      if test "$found" = "no"; then
        LIBS="$pthread_lib $LIBS"
      fi
      break
    fi
  done
fi

if test "$mingw32" != yes -a "$pthread" = no; then
  error_exit "pthread check failed" \
      "Make sure to have the pthread libs and headers installed."
fi

# check for pthread_setname_np
pthread_setname_np=no
cat > $TMPC << EOF
#include <pthread.h>

static void *f(void *p) { return NULL; }
int main(void)
{
    pthread_t thread;
    pthread_create(&thread, 0, f, 0);
    pthread_setname_np(thread, "QEMU");
    return 0;
}
EOF
if compile_prog "" "$pthread_lib" ; then
  pthread_setname_np=yes
fi

##########################################
# rbd probe
if test "$rbd" != "no" ; then
  cat > $TMPC <<EOF
#include <stdio.h>
#include <rbd/librbd.h>
int main(void) {
    rados_t cluster;
    rados_create(&cluster, NULL);
    return 0;
}
EOF
  rbd_libs="-lrbd -lrados"
  if compile_prog "" "$rbd_libs" ; then
    rbd=yes
  else
    if test "$rbd" = "yes" ; then
      feature_not_found "rados block device" "Install librbd/ceph devel"
    fi
    rbd=no
  fi
fi

##########################################
# libssh2 probe
min_libssh2_version=1.2.8
if test "$libssh2" != "no" ; then
  if $pkg_config --atleast-version=$min_libssh2_version libssh2; then
    libssh2_cflags=`$pkg_config libssh2 --cflags`
    libssh2_libs=`$pkg_config libssh2 --libs`
    libssh2=yes
  else
    if test "$libssh2" = "yes" ; then
      error_exit "libssh2 >= $min_libssh2_version required for --enable-libssh2"
    fi
    libssh2=no
  fi
fi

##########################################
# libssh2_sftp_fsync probe

if test "$libssh2" = "yes"; then
  cat > $TMPC <<EOF
#include <stdio.h>
#include <libssh2.h>
#include <libssh2_sftp.h>
int main(void) {
    LIBSSH2_SESSION *session;
    LIBSSH2_SFTP *sftp;
    LIBSSH2_SFTP_HANDLE *sftp_handle;
    session = libssh2_session_init ();
    sftp = libssh2_sftp_init (session);
    sftp_handle = libssh2_sftp_open (sftp, "/", 0, 0);
    libssh2_sftp_fsync (sftp_handle);
    return 0;
}
EOF
  # libssh2_cflags/libssh2_libs defined in previous test.
  if compile_prog "$libssh2_cflags" "$libssh2_libs" ; then
    QEMU_CFLAGS="-DHAS_LIBSSH2_SFTP_FSYNC $QEMU_CFLAGS"
  fi
fi

##########################################
# linux-aio probe

if test "$linux_aio" != "no" ; then
  cat > $TMPC <<EOF
#include <libaio.h>
#include <sys/eventfd.h>
#include <stddef.h>
int main(void) { io_setup(0, NULL); io_set_eventfd(NULL, 0); eventfd(0, 0); return 0; }
EOF
  if compile_prog "" "-laio" ; then
    linux_aio=yes
  else
    if test "$linux_aio" = "yes" ; then
      feature_not_found "linux AIO" "Install libaio devel"
    fi
    linux_aio=no
  fi
fi

##########################################
# TPM passthrough is only on x86 Linux

if test "$targetos" = Linux && test "$cpu" = i386 -o "$cpu" = x86_64; then
  tpm_passthrough=$tpm
else
  tpm_passthrough=no
fi

##########################################
# attr probe

if test "$attr" != "no" ; then
  cat > $TMPC <<EOF
#include <stdio.h>
#include <sys/types.h>
#ifdef CONFIG_LIBATTR
#include <attr/xattr.h>
#else
#include <sys/xattr.h>
#endif
int main(void) { getxattr(NULL, NULL, NULL, 0); setxattr(NULL, NULL, NULL, 0, 0); return 0; }
EOF
  if compile_prog "" "" ; then
    attr=yes
  # Older distros have <attr/xattr.h>, and need -lattr:
  elif compile_prog "-DCONFIG_LIBATTR" "-lattr" ; then
    attr=yes
    LIBS="-lattr $LIBS"
    libattr=yes
  else
    if test "$attr" = "yes" ; then
      feature_not_found "ATTR" "Install libc6 or libattr devel"
    fi
    attr=no
  fi
fi

##########################################
# iovec probe
cat > $TMPC <<EOF
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>
int main(void) { return sizeof(struct iovec); }
EOF
iovec=no
if compile_prog "" "" ; then
  iovec=yes
fi

##########################################
# preadv probe
cat > $TMPC <<EOF
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>
int main(void) { return preadv(0, 0, 0, 0); }
EOF
preadv=no
if compile_prog "" "" ; then
  preadv=yes
fi

##########################################
# fdt probe
# fdt support is mandatory for at least some target architectures,
# so insist on it if we're building those system emulators.
fdt_required=no
for target in $target_list; do
  case $target in
    aarch64*-softmmu|arm*-softmmu|ppc*-softmmu|microblaze*-softmmu)
      fdt_required=yes
    ;;
  esac
done

if test "$fdt_required" = "yes"; then
  if test "$fdt" = "no"; then
    error_exit "fdt disabled but some requested targets require it." \
      "You can turn off fdt only if you also disable all the system emulation" \
      "targets which need it (by specifying a cut down --target-list)."
  fi
  fdt=yes
fi

if test "$fdt" != "no" ; then
  fdt_libs="-lfdt"
  # explicitly check for libfdt_env.h as it is missing in some stable installs
  # and test for required functions to make sure we are on a version >= 1.4.0
  cat > $TMPC << EOF
#include <libfdt.h>
#include <libfdt_env.h>
int main(void) { fdt_get_property_by_offset(0, 0, 0); return 0; }
EOF
  if compile_prog "" "$fdt_libs" ; then
    # system DTC is good - use it
    fdt=yes
  elif test -d ${source_path}/dtc/libfdt ; then
    # have submodule DTC - use it
    fdt=yes
    dtc_internal="yes"
    mkdir -p dtc
    if [ "$pwd_is_source_path" != "y" ] ; then
       symlink "$source_path/dtc/Makefile" "dtc/Makefile"
       symlink "$source_path/dtc/scripts" "dtc/scripts"
    fi
    fdt_cflags="-I\$(SRC_PATH)/dtc/libfdt"
    fdt_libs="-L\$(BUILD_DIR)/dtc/libfdt $fdt_libs"
  elif test "$fdt" = "yes" ; then
    # have neither and want - prompt for system/submodule install
    error_exit "DTC (libfdt) version >= 1.4.0 not present. Your options:" \
        "  (1) Preferred: Install the DTC (libfdt) devel package" \
        "  (2) Fetch the DTC submodule, using:" \
        "      git submodule update --init dtc"
  else
    # don't have and don't want
    fdt_libs=
    fdt=no
  fi
fi

libs_softmmu="$libs_softmmu $fdt_libs"

##########################################
# opengl probe (for sdl2, gtk, milkymist-tmu2)

if test "$opengl" != "no" ; then
  opengl_pkgs="epoxy libdrm gbm"
  if $pkg_config $opengl_pkgs x11; then
    opengl_cflags="$($pkg_config --cflags $opengl_pkgs) $x11_cflags"
    opengl_libs="$($pkg_config --libs $opengl_pkgs) $x11_libs"
    opengl=yes
    if test "$gtk" = "yes" && $pkg_config --exists "$gtkpackage >= 3.16"; then
        gtk_gl="yes"
    fi
  else
    if test "$opengl" = "yes" ; then
      feature_not_found "opengl" "Please install opengl (mesa) devel pkgs: $opengl_pkgs"
    fi
    opengl_cflags=""
    opengl_libs=""
    opengl=no
  fi
fi

if test "$opengl" = "yes"; then
  cat > $TMPC << EOF
#include <epoxy/egl.h>
#ifndef EGL_MESA_image_dma_buf_export
# error mesa/epoxy lacks support for dmabufs (mesa 10.6+)
#endif
int main(void) { return 0; }
EOF
  if compile_prog "" "" ; then
    opengl_dmabuf=yes
  fi
fi

##########################################
# archipelago probe
if test "$archipelago" != "no" ; then
    cat > $TMPC <<EOF
#include <stdio.h>
#include <xseg/xseg.h>
#include <xseg/protocol.h>
int main(void) {
    xseg_initialize();
    return 0;
}
EOF
    archipelago_libs=-lxseg
    if compile_prog "" "$archipelago_libs"; then
        archipelago="yes"
        libs_tools="$archipelago_libs $libs_tools"
        libs_softmmu="$archipelago_libs $libs_softmmu"

	echo "WARNING: Please check the licenses of QEMU and libxseg carefully."
	echo "GPLv3 versions of libxseg may not be compatible with QEMU's"
	echo "license and therefore prevent redistribution."
	echo
	echo "To disable Archipelago, use --disable-archipelago"
    else
      if test "$archipelago" = "yes" ; then
        feature_not_found "Archipelago backend support" "Install libxseg devel"
      fi
      archipelago="no"
    fi
fi


##########################################
# glusterfs probe
if test "$glusterfs" != "no" ; then
  if $pkg_config --atleast-version=3 glusterfs-api; then
    glusterfs="yes"
    glusterfs_cflags=`$pkg_config --cflags glusterfs-api`
    glusterfs_libs=`$pkg_config --libs glusterfs-api`
    if $pkg_config --atleast-version=5 glusterfs-api; then
      glusterfs_discard="yes"
    fi
    if $pkg_config --atleast-version=6 glusterfs-api; then
      glusterfs_zerofill="yes"
    fi
  else
    if test "$glusterfs" = "yes" ; then
      feature_not_found "GlusterFS backend support" \
          "Install glusterfs-api devel >= 3"
    fi
    glusterfs="no"
  fi
fi

# Check for inotify functions when we are building linux-user
# emulator.  This is done because older glibc versions don't
# have syscall stubs for these implemented.  In that case we
# don't provide them even if kernel supports them.
#
inotify=no
cat > $TMPC << EOF
#include <sys/inotify.h>

int
main(void)
{
	/* try to start inotify */
	return inotify_init();
}
EOF
if compile_prog "" "" ; then
  inotify=yes
fi

inotify1=no
cat > $TMPC << EOF
#include <sys/inotify.h>

int
main(void)
{
    /* try to start inotify */
    return inotify_init1(0);
}
EOF
if compile_prog "" "" ; then
  inotify1=yes
fi

# check if utimensat and futimens are supported
utimens=no
cat > $TMPC << EOF
#define _ATFILE_SOURCE
#include <stddef.h>
#include <fcntl.h>
#include <sys/stat.h>

int main(void)
{
    utimensat(AT_FDCWD, "foo", NULL, 0);
    futimens(0, NULL);
    return 0;
}
EOF
if compile_prog "" "" ; then
  utimens=yes
fi

# check if pipe2 is there
pipe2=no
cat > $TMPC << EOF
#include <unistd.h>
#include <fcntl.h>

int main(void)
{
    int pipefd[2];
    return pipe2(pipefd, O_CLOEXEC);
}
EOF
if compile_prog "" "" ; then
  pipe2=yes
fi

# check if accept4 is there
accept4=no
cat > $TMPC << EOF
#include <sys/socket.h>
#include <stddef.h>

int main(void)
{
    accept4(0, NULL, NULL, SOCK_CLOEXEC);
    return 0;
}
EOF
if compile_prog "" "" ; then
  accept4=yes
fi

# check if tee/splice is there. vmsplice was added same time.
splice=no
cat > $TMPC << EOF
#include <unistd.h>
#include <fcntl.h>
#include <limits.h>

int main(void)
{
    int len, fd = 0;
    len = tee(STDIN_FILENO, STDOUT_FILENO, INT_MAX, SPLICE_F_NONBLOCK);
    splice(STDIN_FILENO, NULL, fd, NULL, len, SPLICE_F_MOVE);
    return 0;
}
EOF
if compile_prog "" "" ; then
  splice=yes
fi

##########################################
# libnuma probe

if test "$numa" != "no" ; then
  cat > $TMPC << EOF
#include <numa.h>
int main(void) { return numa_available(); }
EOF

  if compile_prog "" "-lnuma" ; then
    numa=yes
    libs_softmmu="-lnuma $libs_softmmu"
  else
    if test "$numa" = "yes" ; then
      feature_not_found "numa" "install numactl devel"
    fi
    numa=no
  fi
fi

if test "$tcmalloc" = "yes" && test "$jemalloc" = "yes" ; then
    echo "ERROR: tcmalloc && jemalloc can't be used at the same time"
    exit 1
fi

##########################################
# tcmalloc probe

if test "$tcmalloc" = "yes" ; then
  cat > $TMPC << EOF
#include <stdlib.h>
int main(void) { malloc(1); return 0; }
EOF

  if compile_prog "" "-ltcmalloc" ; then
    LIBS="-ltcmalloc $LIBS"
  else
    feature_not_found "tcmalloc" "install gperftools devel"
  fi
fi

##########################################
# jemalloc probe

if test "$jemalloc" = "yes" ; then
  cat > $TMPC << EOF
#include <stdlib.h>
int main(void) { malloc(1); return 0; }
EOF

  if compile_prog "" "-ljemalloc" ; then
    LIBS="-ljemalloc $LIBS"
  else
    feature_not_found "jemalloc" "install jemalloc devel"
  fi
fi

##########################################
# signalfd probe
signalfd="no"
cat > $TMPC << EOF
#include <unistd.h>
#include <sys/syscall.h>
#include <signal.h>
int main(void) { return syscall(SYS_signalfd, -1, NULL, _NSIG / 8); }
EOF

if compile_prog "" "" ; then
  signalfd=yes
fi

# check if eventfd is supported
eventfd=no
cat > $TMPC << EOF
#include <sys/eventfd.h>

int main(void)
{
    return eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
}
EOF
if compile_prog "" "" ; then
  eventfd=yes
fi

# check if memfd is supported
memfd=no
cat > $TMPC << EOF
#include <sys/memfd.h>

int main(void)
{
    return memfd_create("foo", MFD_ALLOW_SEALING);
}
EOF
if compile_prog "" "" ; then
  memfd=yes
fi



# check for fallocate
fallocate=no
cat > $TMPC << EOF
#include <fcntl.h>

int main(void)
{
    fallocate(0, 0, 0, 0);
    return 0;
}
EOF
if compile_prog "" "" ; then
  fallocate=yes
fi

# check for fallocate hole punching
fallocate_punch_hole=no
cat > $TMPC << EOF
#include <fcntl.h>
#include <linux/falloc.h>

int main(void)
{
    fallocate(0, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE, 0, 0);
    return 0;
}
EOF
if compile_prog "" "" ; then
  fallocate_punch_hole=yes
fi

# check that fallocate supports range zeroing inside the file
fallocate_zero_range=no
cat > $TMPC << EOF
#include <fcntl.h>
#include <linux/falloc.h>

int main(void)
{
    fallocate(0, FALLOC_FL_ZERO_RANGE, 0, 0);
    return 0;
}
EOF
if compile_prog "" "" ; then
  fallocate_zero_range=yes
fi

# check for posix_fallocate
posix_fallocate=no
cat > $TMPC << EOF
#include <fcntl.h>

int main(void)
{
    posix_fallocate(0, 0, 0);
    return 0;
}
EOF
if compile_prog "" "" ; then
    posix_fallocate=yes
fi

# check for sync_file_range
sync_file_range=no
cat > $TMPC << EOF
#include <fcntl.h>

int main(void)
{
    sync_file_range(0, 0, 0, 0);
    return 0;
}
EOF
if compile_prog "" "" ; then
  sync_file_range=yes
fi

# check for linux/fiemap.h and FS_IOC_FIEMAP
fiemap=no
cat > $TMPC << EOF
#include <sys/ioctl.h>
#include <linux/fs.h>
#include <linux/fiemap.h>

int main(void)
{
    ioctl(0, FS_IOC_FIEMAP, 0);
    return 0;
}
EOF
if compile_prog "" "" ; then
  fiemap=yes
fi

# check for dup3
dup3=no
cat > $TMPC << EOF
#include <unistd.h>

int main(void)
{
    dup3(0, 0, 0);
    return 0;
}
EOF
if compile_prog "" "" ; then
  dup3=yes
fi

# check for ppoll support
ppoll=no
cat > $TMPC << EOF
#include <poll.h>

int main(void)
{
    struct pollfd pfd = { .fd = 0, .events = 0, .revents = 0 };
    ppoll(&pfd, 1, 0, 0);
    return 0;
}
EOF
if compile_prog "" "" ; then
  ppoll=yes
fi

# check for prctl(PR_SET_TIMERSLACK , ... ) support
prctl_pr_set_timerslack=no
cat > $TMPC << EOF
#include <sys/prctl.h>

int main(void)
{
    prctl(PR_SET_TIMERSLACK, 1, 0, 0, 0);
    return 0;
}
EOF
if compile_prog "" "" ; then
  prctl_pr_set_timerslack=yes
fi

# check for epoll support
epoll=no
cat > $TMPC << EOF
#include <sys/epoll.h>

int main(void)
{
    epoll_create(0);
    return 0;
}
EOF
if compile_prog "" "" ; then
  epoll=yes
fi

# epoll_create1 and epoll_pwait are later additions
# so we must check separately for their presence
epoll_create1=no
cat > $TMPC << EOF
#include <sys/epoll.h>

int main(void)
{
    /* Note that we use epoll_create1 as a value, not as
     * a function being called. This is necessary so that on
     * old SPARC glibc versions where the function was present in
     * the library but not declared in the header file we will
     * fail the configure check. (Otherwise we will get a compiler
     * warning but not an error, and will proceed to fail the
     * qemu compile where we compile with -Werror.)
     */
    return (int)(uintptr_t)&epoll_create1;
}
EOF
if compile_prog "" "" ; then
  epoll_create1=yes
fi

epoll_pwait=no
cat > $TMPC << EOF
#include <sys/epoll.h>

int main(void)
{
    epoll_pwait(0, 0, 0, 0, 0);
    return 0;
}
EOF
if compile_prog "" "" ; then
  epoll_pwait=yes
fi

# check for sendfile support
sendfile=no
cat > $TMPC << EOF
#include <sys/sendfile.h>

int main(void)
{
    return sendfile(0, 0, 0, 0);
}
EOF
if compile_prog "" "" ; then
  sendfile=yes
fi

# check for timerfd support (glibc 2.8 and newer)
timerfd=no
cat > $TMPC << EOF
#include <sys/timerfd.h>

int main(void)
{
    return(timerfd_create(CLOCK_REALTIME, 0));
}
EOF
if compile_prog "" "" ; then
  timerfd=yes
fi

# check for setns and unshare support
setns=no
cat > $TMPC << EOF
#include <sched.h>

int main(void)
{
    int ret;
    ret = setns(0, 0);
    ret = unshare(0);
    return ret;
}
EOF
if compile_prog "" "" ; then
  setns=yes
fi

# Check if tools are available to build documentation.
if test "$docs" != "no" ; then
  if has makeinfo && has pod2man; then
    docs=yes
  else
    if test "$docs" = "yes" ; then
      feature_not_found "docs" "Install texinfo and Perl/perl-podlators"
    fi
    docs=no
  fi
fi

# Search for bswap_32 function
byteswap_h=no
cat > $TMPC << EOF
#include <byteswap.h>
int main(void) { return bswap_32(0); }
EOF
if compile_prog "" "" ; then
  byteswap_h=yes
fi

# Search for bswap32 function
bswap_h=no
cat > $TMPC << EOF
#include <sys/endian.h>
#include <sys/types.h>
#include <machine/bswap.h>
int main(void) { return bswap32(0); }
EOF
if compile_prog "" "" ; then
  bswap_h=yes
fi

##########################################
# Do we have libiscsi >= 1.9.0
if test "$libiscsi" != "no" ; then
  if $pkg_config --atleast-version=1.9.0 libiscsi; then
    libiscsi="yes"
    libiscsi_cflags=$($pkg_config --cflags libiscsi)
    libiscsi_libs=$($pkg_config --libs libiscsi)
  else
    if test "$libiscsi" = "yes" ; then
      feature_not_found "libiscsi" "Install libiscsi >= 1.9.0"
    fi
    libiscsi="no"
  fi
fi

##########################################
# Do we need libm
cat > $TMPC << EOF
#include <math.h>
int main(int argc, char **argv) { return isnan(sin((double)argc)); }
EOF
if compile_prog "" "" ; then
  :
elif compile_prog "" "-lm" ; then
  LIBS="-lm $LIBS"
  libs_qga="-lm $libs_qga"
else
  error_exit "libm check failed"
fi

##########################################
# Do we need librt
# uClibc provides 2 versions of clock_gettime(), one with realtime
# support and one without. This means that the clock_gettime() don't
# need -lrt. We still need it for timer_create() so we check for this
# function in addition.
cat > $TMPC <<EOF
#include <signal.h>
#include <time.h>
int main(void) {
  timer_create(CLOCK_REALTIME, NULL, NULL);
  return clock_gettime(CLOCK_REALTIME, NULL);
}
EOF

if compile_prog "" "" ; then
  :
# we need pthread for static linking. use previous pthread test result
elif compile_prog "" "$pthread_lib -lrt" ; then
  LIBS="$LIBS -lrt"
  libs_qga="$libs_qga -lrt"
fi

if test "$darwin" != "yes" -a "$mingw32" != "yes" -a "$solaris" != yes -a \
        "$aix" != "yes" -a "$haiku" != "yes" ; then
    libs_softmmu="-lutil $libs_softmmu"
fi

##########################################
# spice probe
if test "$spice" != "no" ; then
  cat > $TMPC << EOF
#include <spice.h>
int main(void) { spice_server_new(); return 0; }
EOF
  spice_cflags=$($pkg_config --cflags spice-protocol spice-server 2>/dev/null)
  spice_libs=$($pkg_config --libs spice-protocol spice-server 2>/dev/null)
  if $pkg_config --atleast-version=0.12.0 spice-server && \
     $pkg_config --atleast-version=0.12.3 spice-protocol && \
     compile_prog "$spice_cflags" "$spice_libs" ; then
    spice="yes"
    libs_softmmu="$libs_softmmu $spice_libs"
    QEMU_CFLAGS="$QEMU_CFLAGS $spice_cflags"
    spice_protocol_version=$($pkg_config --modversion spice-protocol)
    spice_server_version=$($pkg_config --modversion spice-server)
  else
    if test "$spice" = "yes" ; then
      feature_not_found "spice" \
          "Install spice-server(>=0.12.0) and spice-protocol(>=0.12.3) devel"
    fi
    spice="no"
  fi
fi

# check for smartcard support
smartcard_cflags=""
if test "$smartcard" != "no"; then
    if $pkg_config libcacard; then
        libcacard_cflags=$($pkg_config --cflags libcacard)
        libcacard_libs=$($pkg_config --libs libcacard)
        QEMU_CFLAGS="$QEMU_CFLAGS $libcacard_cflags"
        libs_softmmu="$libs_softmmu $libcacard_libs"
        smartcard="yes"
    else
        if test "$smartcard" = "yes"; then
            feature_not_found "smartcard" "Install libcacard devel"
        fi
        smartcard="no"
    fi
fi

# check for libusb
if test "$libusb" != "no" ; then
    if $pkg_config --atleast-version=1.0.13 libusb-1.0; then
        libusb="yes"
        libusb_cflags=$($pkg_config --cflags libusb-1.0)
        libusb_libs=$($pkg_config --libs libusb-1.0)
        QEMU_CFLAGS="$QEMU_CFLAGS $libusb_cflags"
        libs_softmmu="$libs_softmmu $libusb_libs"
    else
        if test "$libusb" = "yes"; then
            feature_not_found "libusb" "Install libusb devel >= 1.0.13"
        fi
        libusb="no"
    fi
fi

# check for usbredirparser for usb network redirection support
if test "$usb_redir" != "no" ; then
    if $pkg_config --atleast-version=0.6 libusbredirparser-0.5; then
        usb_redir="yes"
        usb_redir_cflags=$($pkg_config --cflags libusbredirparser-0.5)
        usb_redir_libs=$($pkg_config --libs libusbredirparser-0.5)
        QEMU_CFLAGS="$QEMU_CFLAGS $usb_redir_cflags"
        libs_softmmu="$libs_softmmu $usb_redir_libs"
    else
        if test "$usb_redir" = "yes"; then
            feature_not_found "usb-redir" "Install usbredir devel"
        fi
        usb_redir="no"
    fi
fi

##########################################
# check if we have VSS SDK headers for win

if test "$mingw32" = "yes" -a "$guest_agent" != "no" -a "$vss_win32_sdk" != "no" ; then
  case "$vss_win32_sdk" in
    "")   vss_win32_include="-I$source_path" ;;
    *\ *) # The SDK is installed in "Program Files" by default, but we cannot
          # handle path with spaces. So we symlink the headers into ".sdk/vss".
          vss_win32_include="-I$source_path/.sdk/vss"
	  symlink "$vss_win32_sdk/inc" "$source_path/.sdk/vss/inc"
	  ;;
    *)    vss_win32_include="-I$vss_win32_sdk"
  esac
  cat > $TMPC << EOF
#define __MIDL_user_allocate_free_DEFINED__
#include <inc/win2003/vss.h>
int main(void) { return VSS_CTX_BACKUP; }
EOF
  if compile_prog "$vss_win32_include" "" ; then
    guest_agent_with_vss="yes"
    QEMU_CFLAGS="$QEMU_CFLAGS $vss_win32_include"
    libs_qga="-lole32 -loleaut32 -lshlwapi -luuid -lstdc++ -Wl,--enable-stdcall-fixup $libs_qga"
    qga_vss_provider="qga/vss-win32/qga-vss.dll qga/vss-win32/qga-vss.tlb"
  else
    if test "$vss_win32_sdk" != "" ; then
      echo "ERROR: Please download and install Microsoft VSS SDK:"
      echo "ERROR:   http://www.microsoft.com/en-us/download/details.aspx?id=23490"
      echo "ERROR: On POSIX-systems, you can extract the SDK headers by:"
      echo "ERROR:   scripts/extract-vsssdk-headers setup.exe"
      echo "ERROR: The headers are extracted in the directory \`inc'."
      feature_not_found "VSS support"
    fi
    guest_agent_with_vss="no"
  fi
fi

##########################################
# lookup Windows platform SDK (if not specified)
# The SDK is needed only to build .tlb (type library) file of guest agent
# VSS provider from the source. It is usually unnecessary because the
# pre-compiled .tlb file is included.

if test "$mingw32" = "yes" -a "$guest_agent" != "no" -a "$guest_agent_with_vss" = "yes" ; then
  if test -z "$win_sdk"; then
    programfiles="$PROGRAMFILES"
    test -n "$PROGRAMW6432" && programfiles="$PROGRAMW6432"
    if test -n "$programfiles"; then
      win_sdk=$(ls -d "$programfiles/Microsoft SDKs/Windows/v"* | tail -1) 2>/dev/null
    else
      feature_not_found "Windows SDK"
    fi
  elif test "$win_sdk" = "no"; then
    win_sdk=""
  fi
fi

##########################################
# check if mingw environment provides a recent ntddscsi.h
if test "$mingw32" = "yes" -a "$guest_agent" != "no"; then
  cat > $TMPC << EOF
#include <windows.h>
#include <ntddscsi.h>
int main(void) {
#if !defined(IOCTL_SCSI_GET_ADDRESS)
#error Missing required ioctl definitions
#endif
  SCSI_ADDRESS addr = { .Lun = 0, .TargetId = 0, .PathId = 0 };
  return addr.Lun;
}
EOF
  if compile_prog "" "" ; then
    guest_agent_ntddscsi=yes
    libs_qga="-lsetupapi $libs_qga"
  fi
fi

##########################################
# virgl renderer probe

if test "$virglrenderer" != "no" ; then
  cat > $TMPC << EOF
#include <virglrenderer.h>
int main(void) { virgl_renderer_poll(); return 0; }
EOF
  virgl_cflags=$($pkg_config --cflags virglrenderer 2>/dev/null)
  virgl_libs=$($pkg_config --libs virglrenderer 2>/dev/null)
  if $pkg_config virglrenderer >/dev/null 2>&1 && \
     compile_prog "$virgl_cflags" "$virgl_libs" ; then
    virglrenderer="yes"
  else
    if test "$virglrenderer" = "yes" ; then
      feature_not_found "virglrenderer"
    fi
    virglrenderer="no"
  fi
fi

##########################################
# check if we have fdatasync

fdatasync=no
cat > $TMPC << EOF
#include <unistd.h>
int main(void) {
#if defined(_POSIX_SYNCHRONIZED_IO) && _POSIX_SYNCHRONIZED_IO > 0
return fdatasync(0);
#else
#error Not supported
#endif
}
EOF
if compile_prog "" "" ; then
    fdatasync=yes
fi

##########################################
# check if we have madvise

madvise=no
cat > $TMPC << EOF
#include <sys/types.h>
#include <sys/mman.h>
#include <stddef.h>
int main(void) { return madvise(NULL, 0, MADV_DONTNEED); }
EOF
if compile_prog "" "" ; then
    madvise=yes
fi

##########################################
# check if we have posix_madvise

posix_madvise=no
cat > $TMPC << EOF
#include <sys/mman.h>
#include <stddef.h>
int main(void) { return posix_madvise(NULL, 0, POSIX_MADV_DONTNEED); }
EOF
if compile_prog "" "" ; then
    posix_madvise=yes
fi

##########################################
# check if we have usable SIGEV_THREAD_ID

sigev_thread_id=no
cat > $TMPC << EOF
#include <signal.h>
int main(void) {
  struct sigevent ev;
  ev.sigev_notify = SIGEV_THREAD_ID;
  ev._sigev_un._tid = 0;
  asm volatile("" : : "g"(&ev));
  return 0;
}
EOF
if compile_prog "" "" ; then
    sigev_thread_id=yes
fi

##########################################
# check if trace backend exists

$python "$source_path/scripts/tracetool.py" "--backends=$trace_backends" --check-backends  > /dev/null 2> /dev/null
if test "$?" -ne 0 ; then
  error_exit "invalid trace backends" \
      "Please choose supported trace backends."
fi

##########################################
# For 'ust' backend, test if ust headers are present
if have_backend "ust"; then
  cat > $TMPC << EOF
#include <lttng/tracepoint.h>
int main(void) { return 0; }
EOF
  if compile_prog "" "" ; then
    if $pkg_config lttng-ust --exists; then
      lttng_ust_libs=`$pkg_config --libs lttng-ust`
    else
      lttng_ust_libs="-llttng-ust"
    fi
    if $pkg_config liburcu-bp --exists; then
      urcu_bp_libs=`$pkg_config --libs liburcu-bp`
    else
      urcu_bp_libs="-lurcu-bp"
    fi

    LIBS="$lttng_ust_libs $urcu_bp_libs $LIBS"
    libs_qga="$lttng_ust_libs $urcu_bp_libs $libs_qga"
  else
    error_exit "Trace backend 'ust' missing lttng-ust header files"
  fi
fi

##########################################
# For 'dtrace' backend, test if 'dtrace' command is present
if have_backend "dtrace"; then
  if ! has 'dtrace' ; then
    error_exit "dtrace command is not found in PATH $PATH"
  fi
  trace_backend_stap="no"
  if has 'stap' ; then
    trace_backend_stap="yes"
  fi
fi

##########################################
# check and set a backend for coroutine

# We prefer ucontext, but it's not always possible. The fallback
# is sigcontext. gthread is not selectable except explicitly, because
# it is not functional enough to run QEMU proper. (It is occasionally
# useful for debugging purposes.)  On Windows the only valid backend
# is the Windows-specific one.

ucontext_works=no
if test "$darwin" != "yes"; then
  cat > $TMPC << EOF
#include <ucontext.h>
#ifdef __stub_makecontext
#error Ignoring glibc stub makecontext which will always fail
#endif
int main(void) { makecontext(0, 0, 0); return 0; }
EOF
  if compile_prog "" "" ; then
    ucontext_works=yes
  fi
fi

if test "$coroutine" = ""; then
  if test "$mingw32" = "yes"; then
    coroutine=win32
  elif test "$ucontext_works" = "yes"; then
    coroutine=ucontext
  else
    coroutine=sigaltstack
  fi
else
  case $coroutine in
  windows)
    if test "$mingw32" != "yes"; then
      error_exit "'windows' coroutine backend only valid for Windows"
    fi
    # Unfortunately the user visible backend name doesn't match the
    # coroutine-*.c filename for this case, so we have to adjust it here.
    coroutine=win32
    ;;
  ucontext)
    if test "$ucontext_works" != "yes"; then
      feature_not_found "ucontext"
    fi
    ;;
  gthread|sigaltstack)
    if test "$mingw32" = "yes"; then
      error_exit "only the 'windows' coroutine backend is valid for Windows"
    fi
    ;;
  *)
    error_exit "unknown coroutine backend $coroutine"
    ;;
  esac
fi

if test "$coroutine_pool" = ""; then
  if test "$coroutine" = "gthread"; then
    coroutine_pool=no
  else
    coroutine_pool=yes
  fi
fi
if test "$coroutine" = "gthread" -a "$coroutine_pool" = "yes"; then
  error_exit "'gthread' coroutine backend does not support pool (use --disable-coroutine-pool)"
fi

##########################################
# check if we have open_by_handle_at

open_by_handle_at=no
cat > $TMPC << EOF
#include <fcntl.h>
#if !defined(AT_EMPTY_PATH)
# error missing definition
#else
int main(void) { struct file_handle fh; return open_by_handle_at(0, &fh, 0); }
#endif
EOF
if compile_prog "" "" ; then
    open_by_handle_at=yes
fi

########################################
# check if we have linux/magic.h

linux_magic_h=no
cat > $TMPC << EOF
#include <linux/magic.h>
int main(void) {
  return 0;
}
EOF
if compile_prog "" "" ; then
    linux_magic_h=yes
fi

########################################
# check whether we can disable warning option with a pragma (this is needed
# to silence warnings in the headers of some versions of external libraries).
# This test has to be compiled with -Werror as otherwise an unknown pragma is
# only a warning.
#
# If we can't selectively disable warning in the code, disable -Werror so that
# the build doesn't fail anyway.

pragma_disable_unused_but_set=no
cat > $TMPC << EOF
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
#pragma GCC diagnostic ignored "-Wstrict-prototypes"
#pragma GCC diagnostic pop

int main(void) {
    return 0;
}
EOF
if compile_prog "-Werror" "" ; then
    pragma_diagnostic_available=yes
else
    werror=no
fi

########################################
# check if we have valgrind/valgrind.h

valgrind_h=no
cat > $TMPC << EOF
#include <valgrind/valgrind.h>
int main(void) {
  return 0;
}
EOF
if compile_prog "" "" ; then
    valgrind_h=yes
fi

########################################
# check if environ is declared

has_environ=no
cat > $TMPC << EOF
#include <unistd.h>
int main(void) {
    environ = 0;
    return 0;
}
EOF
if compile_prog "" "" ; then
    has_environ=yes
fi

########################################
# check if cpuid.h is usable.

cpuid_h=no
cat > $TMPC << EOF
#include <cpuid.h>
int main(void) {
    unsigned a, b, c, d;
    int max = __get_cpuid_max(0, 0);

    if (max >= 1) {
        __cpuid(1, a, b, c, d);
    }

    if (max >= 7) {
        __cpuid_count(7, 0, a, b, c, d);
    }

    return 0;
}
EOF
if compile_prog "" "" ; then
    cpuid_h=yes
fi

########################################
# check if __[u]int128_t is usable.

int128=no
cat > $TMPC << EOF
#if defined(__clang_major__) && defined(__clang_minor__)
# if ((__clang_major__ < 3) || (__clang_major__ == 3) && (__clang_minor__ < 2))
#  error __int128_t does not work in CLANG before 3.2
# endif
#endif
__int128_t a;
__uint128_t b;
int main (void) {
  a = a + b;
  b = a * b;
  a = a * a;
  return 0;
}
EOF
if compile_prog "" "" ; then
    int128=yes
fi

########################################
# check if getauxval is available.

getauxval=no
cat > $TMPC << EOF
#include <sys/auxv.h>
int main(void) {
  return getauxval(AT_HWCAP) == 0;
}
EOF
if compile_prog "" "" ; then
    getauxval=yes
fi

########################################
# check if ccache is interfering with
# semantic analysis of macros

unset CCACHE_CPP2
ccache_cpp2=no
cat > $TMPC << EOF
static const int Z = 1;
#define fn() ({ Z; })
#define TAUT(X) ((X) == Z)
#define PAREN(X, Y) (X == Y)
#define ID(X) (X)
int main(int argc, char *argv[])
{
    int x = 0, y = 0;
    x = ID(x);
    x = fn();
    fn();
    if (PAREN(x, y)) return 0;
    if (TAUT(Z)) return 0;
    return 0;
}
EOF

if ! compile_object "-Werror"; then
    ccache_cpp2=yes
fi

#################################################
# clang does not support glibc + FORTIFY_SOURCE.

if test "$fortify_source" != "no"; then
  if echo | $cc -dM -E - | grep __clang__ > /dev/null 2>&1 ; then
    fortify_source="no";
  elif test -n "$cxx" &&
       echo | $cxx -dM -E - | grep __clang__ >/dev/null 2>&1 ; then
    fortify_source="no";
  else
    fortify_source="yes"
  fi
fi

##########################################
# End of CC checks
# After here, no more $cc or $ld runs

if test "$gcov" = "yes" ; then
  CFLAGS="-fprofile-arcs -ftest-coverage -g $CFLAGS"
  LDFLAGS="-fprofile-arcs -ftest-coverage $LDFLAGS"
elif test "$fortify_source" = "yes" ; then
  CFLAGS="-O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $CFLAGS"
elif test "$debug" = "no"; then
  CFLAGS="-O2 $CFLAGS"
fi

##########################################
# Do we have libnfs
if test "$libnfs" != "no" ; then
  if $pkg_config --atleast-version=1.9.3 libnfs; then
    libnfs="yes"
    libnfs_libs=$($pkg_config --libs libnfs)
    LIBS="$LIBS $libnfs_libs"
  else
    if test "$libnfs" = "yes" ; then
      feature_not_found "libnfs" "Install libnfs devel >= 1.9.3"
    fi
    libnfs="no"
  fi
fi

# Disable zero malloc errors for official releases unless explicitly told to
# enable/disable
if test -z "$zero_malloc" ; then
    if test "$z_version" = "50" ; then
	zero_malloc="no"
    else
	zero_malloc="yes"
    fi
fi

# Now we've finished running tests it's OK to add -Werror to the compiler flags
if test "$werror" = "yes"; then
    QEMU_CFLAGS="-Werror $QEMU_CFLAGS"
fi

if test "$solaris" = "no" ; then
    if $ld --version 2>/dev/null | grep "GNU ld" >/dev/null 2>/dev/null ; then
        LDFLAGS="-Wl,--warn-common $LDFLAGS"
    fi
fi

# test if pod2man has --utf8 option
if pod2man --help | grep -q utf8; then
    POD2MAN="pod2man --utf8"
else
    POD2MAN="pod2man"
fi

# Use ASLR, no-SEH and DEP if available
if test "$mingw32" = "yes" ; then
    for flag in --dynamicbase --no-seh --nxcompat; do
        if $ld --help 2>/dev/null | grep ".$flag" >/dev/null 2>/dev/null ; then
            LDFLAGS="-Wl,$flag $LDFLAGS"
        fi
    done
fi

qemu_confdir=$sysconfdir$confsuffix
qemu_moddir=$libdir$confsuffix
qemu_datadir=$datadir$confsuffix
qemu_localedir="$datadir/locale"

tools=""
if test "$want_tools" = "yes" ; then
  tools="qemu-img\$(EXESUF) qemu-io\$(EXESUF) $tools"
  if [ "$linux" = "yes" -o "$bsd" = "yes" -o "$solaris" = "yes" ] ; then
    tools="qemu-nbd\$(EXESUF) $tools"
    tools="ivshmem-client\$(EXESUF) ivshmem-server\$(EXESUF) $tools"
  fi
fi
if test "$softmmu" = yes ; then
  if test "$virtfs" != no ; then
    if test "$cap" = yes && test "$linux" = yes && test "$attr" = yes ; then
      virtfs=yes
      tools="$tools fsdev/virtfs-proxy-helper\$(EXESUF)"
    else
      if test "$virtfs" = yes; then
        error_exit "VirtFS is supported only on Linux and requires libcap-devel and libattr-devel"
      fi
      virtfs=no
    fi
  fi
fi

# Probe for guest agent support/options

if [ "$guest_agent" != "no" ]; then
  if [ "$linux" = "yes" -o "$bsd" = "yes" -o "$solaris" = "yes" -o "$mingw32" = "yes" ] ; then
      tools="qemu-ga $tools"
      guest_agent=yes
  elif [ "$guest_agent" != yes ]; then
      guest_agent=no
  else
      error_exit "Guest agent is not supported on this platform"
  fi
fi

# Guest agent Window MSI  package

if test "$guest_agent" != yes; then
  if test "$guest_agent_msi" = yes; then
    error_exit "MSI guest agent package requires guest agent enabled"
  fi
  guest_agent_msi=no
elif test "$mingw32" != "yes"; then
  if test "$guest_agent_msi" = "yes"; then
    error_exit "MSI guest agent package is available only for MinGW Windows cross-compilation"
  fi
  guest_agent_msi=no
elif ! has wixl; then
  if test "$guest_agent_msi" = "yes"; then
    error_exit "MSI guest agent package requires wixl tool installed ( usually from msitools package )"
  fi
  guest_agent_msi=no
else
  # we support qemu-ga, mingw32, and wixl: default to MSI enabled if it wasn't
  # disabled explicitly
  if test "$guest_agent_msi" != "no"; then
    guest_agent_msi=yes
  fi
fi

if test "$guest_agent_msi" = "yes"; then
  if test "$guest_agent_with_vss" = "yes"; then
    QEMU_GA_MSI_WITH_VSS="-D InstallVss"
  fi

  if test "$QEMU_GA_MANUFACTURER" = ""; then
    QEMU_GA_MANUFACTURER=QEMU
  fi

  if test "$QEMU_GA_DISTRO" = ""; then
    QEMU_GA_DISTRO=Linux
  fi

  if test "$QEMU_GA_VERSION" = ""; then
      QEMU_GA_VERSION=`cat $source_path/VERSION`
  fi

  QEMU_GA_MSI_MINGW_DLL_PATH="-D Mingw_dlls=`$pkg_config --variable=prefix glib-2.0`/bin"

  case "$cpu" in
  x86_64)
    QEMU_GA_MSI_ARCH="-a x64 -D Arch=64"
    ;;
  i386)
    QEMU_GA_MSI_ARCH="-D Arch=32"
    ;;
  *)
    error_exit "CPU $cpu not supported for building installation package"
    ;;
  esac
fi

# Mac OS X ships with a broken assembler
roms=
if test \( "$cpu" = "i386" -o "$cpu" = "x86_64" \) -a \
        "$targetos" != "Darwin" -a "$targetos" != "SunOS" -a \
        "$softmmu" = yes ; then
  roms="optionrom"
fi
if test "$cpu" = "ppc64" -a "$targetos" != "Darwin" ; then
  roms="$roms spapr-rtas"
fi

if test "$cpu" = "s390x" ; then
  roms="$roms s390-ccw"
fi

# Probe for the need for relocating the user-only binary.
if test "$pie" = "no" ; then
  textseg_addr=
  case "$cpu" in
    arm | i386 | ppc* | s390* | sparc* | x86_64 | x32)
      # ??? Rationale for choosing this address
      textseg_addr=0x60000000
      ;;
    mips)
      # A 256M aligned address, high in the address space, with enough
      # room for the code_gen_buffer above it before the stack.
      textseg_addr=0x60000000
      ;;
  esac
  if [ -n "$textseg_addr" ]; then
    cat > $TMPC <<EOF
    int main(void) { return 0; }
EOF
    textseg_ldflags="-Wl,-Ttext-segment=$textseg_addr"
    if ! compile_prog "" "$textseg_ldflags"; then
      # In case ld does not support -Ttext-segment, edit the default linker
      # script via sed to set the .text start addr.  This is needed on FreeBSD
      # at least.
      $ld --verbose | sed \
        -e '1,/==================================================/d' \
        -e '/==================================================/,$d' \
        -e "s/[.] = [0-9a-fx]* [+] SIZEOF_HEADERS/. = $textseg_addr + SIZEOF_HEADERS/" \
        -e "s/__executable_start = [0-9a-fx]*/__executable_start = $textseg_addr/" > config-host.ld
      textseg_ldflags="-Wl,-T../config-host.ld"
    fi
  fi
fi

# prepend pixman and ftd flags after all config tests are done
QEMU_CFLAGS="$pixman_cflags $fdt_cflags $QEMU_CFLAGS"
libs_softmmu="$pixman_libs $libs_softmmu"

echo "Install prefix    $prefix"
echo "BIOS directory    `eval echo $qemu_datadir`"
echo "binary directory  `eval echo $bindir`"
echo "library directory `eval echo $libdir`"
echo "module directory  `eval echo $qemu_moddir`"
echo "libexec directory `eval echo $libexecdir`"
echo "include directory `eval echo $includedir`"
echo "config directory  `eval echo $sysconfdir`"
if test "$mingw32" = "no" ; then
echo "local state directory   `eval echo $local_statedir`"
echo "Manual directory  `eval echo $mandir`"
echo "ELF interp prefix $interp_prefix"
else
echo "local state directory   queried at runtime"
echo "Windows SDK       $win_sdk"
fi
echo "Source path       $source_path"
echo "C compiler        $cc"
echo "Host C compiler   $host_cc"
echo "C++ compiler      $cxx"
echo "Objective-C compiler $objcc"
echo "ARFLAGS           $ARFLAGS"
echo "CFLAGS            $CFLAGS"
echo "QEMU_CFLAGS       $QEMU_CFLAGS"
echo "LDFLAGS           $LDFLAGS"
echo "make              $make"
echo "install           $install"
echo "python            $python"
if test "$slirp" = "yes" ; then
    echo "smbd              $smbd"
fi
echo "module support    $modules"
echo "host CPU          $cpu"
echo "host big endian   $bigendian"
echo "target list       $target_list"
echo "tcg debug enabled $debug_tcg"
echo "gprof enabled     $gprof"
echo "sparse enabled    $sparse"
echo "strip binaries    $strip_opt"
echo "profiler          $profiler"
echo "static build      $static"
if test "$darwin" = "yes" ; then
    echo "Cocoa support     $cocoa"
fi
echo "pixman            $pixman"
echo "SDL support       $sdl"
echo "GTK support       $gtk"
echo "GTK GL support    $gtk_gl"
echo "GNUTLS support    $gnutls"
echo "GNUTLS hash       $gnutls_hash"
echo "libgcrypt         $gcrypt"
if test "$nettle" = "yes"; then
    echo "nettle            $nettle ($nettle_version)"
else
    echo "nettle            $nettle"
fi
echo "libtasn1          $tasn1"
echo "VTE support       $vte"
echo "curses support    $curses"
echo "virgl support     $virglrenderer"
echo "curl support      $curl"
echo "mingw32 support   $mingw32"
echo "Audio drivers     $audio_drv_list"
echo "Block whitelist (rw) $block_drv_rw_whitelist"
echo "Block whitelist (ro) $block_drv_ro_whitelist"
echo "VirtFS support    $virtfs"
echo "VNC support       $vnc"
if test "$vnc" = "yes" ; then
    echo "VNC SASL support  $vnc_sasl"
    echo "VNC JPEG support  $vnc_jpeg"
    echo "VNC PNG support   $vnc_png"
fi
if test -n "$sparc_cpu"; then
    echo "Target Sparc Arch $sparc_cpu"
fi
echo "xen support       $xen"
if test "$xen" = "yes" ; then
  echo "xen ctrl version  $xen_ctrl_version"
  echo "pv dom build      $xen_pv_domain_build"
fi
echo "brlapi support    $brlapi"
echo "bluez  support    $bluez"
echo "Documentation     $docs"
echo "PIE               $pie"
echo "vde support       $vde"
echo "netmap support    $netmap"
echo "Linux AIO support $linux_aio"
echo "ATTR/XATTR support $attr"
echo "Install blobs     $blobs"
echo "KVM support       $kvm"
echo "RDMA support      $rdma"
echo "TCG interpreter   $tcg_interpreter"
echo "fdt support       $fdt"
echo "preadv support    $preadv"
echo "fdatasync         $fdatasync"
echo "madvise           $madvise"
echo "posix_madvise     $posix_madvise"
echo "sigev_thread_id   $sigev_thread_id"
echo "uuid support      $uuid"
echo "libcap-ng support $cap_ng"
echo "vhost-net support $vhost_net"
echo "vhost-scsi support $vhost_scsi"
echo "Trace backends    $trace_backends"
if have_backend "simple"; then
echo "Trace output file $trace_file-<pid>"
fi
if test "$spice" = "yes"; then
echo "spice support     $spice ($spice_protocol_version/$spice_server_version)"
else
echo "spice support     $spice"
fi
echo "rbd support       $rbd"
echo "xfsctl support    $xfs"
echo "smartcard support $smartcard"
echo "libusb            $libusb"
echo "usb net redir     $usb_redir"
echo "OpenGL support    $opengl"
echo "OpenGL dmabufs    $opengl_dmabuf"
echo "libiscsi support  $libiscsi"
echo "libnfs support    $libnfs"
echo "build guest agent $guest_agent"
echo "QGA VSS support   $guest_agent_with_vss"
echo "QGA w32 disk info $guest_agent_ntddscsi"
echo "QGA MSI support   $guest_agent_msi"
echo "seccomp support   $seccomp"
echo "coroutine backend $coroutine"
echo "coroutine pool    $coroutine_pool"
echo "GlusterFS support $glusterfs"
echo "Archipelago support $archipelago"
echo "gcov              $gcov_tool"
echo "gcov enabled      $gcov"
echo "TPM support       $tpm"
echo "libssh2 support   $libssh2"
echo "TPM passthrough   $tpm_passthrough"
echo "QOM debugging     $qom_cast_debug"
echo "vhdx              $vhdx"
echo "lzo support       $lzo"
echo "snappy support    $snappy"
echo "bzip2 support     $bzip2"
echo "NUMA host support $numa"
echo "tcmalloc support  $tcmalloc"
echo "jemalloc support  $jemalloc"
echo "avx2 optimization $avx2_opt"

if test "$sdl_too_old" = "yes"; then
echo "-> Your SDL version is too old - please upgrade to have SDL support"
fi

config_host_mak="config-host.mak"

echo "# Automatically generated by configure - do not modify" >config-all-disas.mak

echo "# Automatically generated by configure - do not modify" > $config_host_mak
echo >> $config_host_mak

echo all: >> $config_host_mak
echo "prefix=$prefix" >> $config_host_mak
echo "bindir=$bindir" >> $config_host_mak
echo "libdir=$libdir" >> $config_host_mak
echo "libexecdir=$libexecdir" >> $config_host_mak
echo "includedir=$includedir" >> $config_host_mak
echo "mandir=$mandir" >> $config_host_mak
echo "sysconfdir=$sysconfdir" >> $config_host_mak
echo "qemu_confdir=$qemu_confdir" >> $config_host_mak
echo "qemu_datadir=$qemu_datadir" >> $config_host_mak
echo "qemu_docdir=$qemu_docdir" >> $config_host_mak
echo "qemu_moddir=$qemu_moddir" >> $config_host_mak
if test "$mingw32" = "no" ; then
  echo "qemu_localstatedir=$local_statedir" >> $config_host_mak
fi
echo "qemu_helperdir=$libexecdir" >> $config_host_mak
echo "extra_cflags=$EXTRA_CFLAGS" >> $config_host_mak
echo "extra_ldflags=$EXTRA_LDFLAGS" >> $config_host_mak
echo "qemu_localedir=$qemu_localedir" >> $config_host_mak
echo "libs_softmmu=$libs_softmmu" >> $config_host_mak

echo "ARCH=$ARCH" >> $config_host_mak

if test "$debug_tcg" = "yes" ; then
  echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
fi
if test "$strip_opt" = "yes" ; then
  echo "STRIP=${strip}" >> $config_host_mak
fi
if test "$bigendian" = "yes" ; then
  echo "HOST_WORDS_BIGENDIAN=y" >> $config_host_mak
fi
if test "$mingw32" = "yes" ; then
  echo "CONFIG_WIN32=y" >> $config_host_mak
  rc_version=`cat $source_path/VERSION`
  version_major=${rc_version%%.*}
  rc_version=${rc_version#*.}
  version_minor=${rc_version%%.*}
  rc_version=${rc_version#*.}
  version_subminor=${rc_version%%.*}
  version_micro=0
  echo "CONFIG_FILEVERSION=$version_major,$version_minor,$version_subminor,$version_micro" >> $config_host_mak
  echo "CONFIG_PRODUCTVERSION=$version_major,$version_minor,$version_subminor,$version_micro" >> $config_host_mak
  if test "$guest_agent_with_vss" = "yes" ; then
    echo "CONFIG_QGA_VSS=y" >> $config_host_mak
    echo "QGA_VSS_PROVIDER=$qga_vss_provider" >> $config_host_mak
    echo "WIN_SDK=\"$win_sdk\"" >> $config_host_mak
  fi
  if test "$guest_agent_ntddscsi" = "yes" ; then
    echo "CONFIG_QGA_NTDDDISK=y" >> $config_host_mak
  fi
  if test "$guest_agent_msi" = "yes"; then
    echo "QEMU_GA_MSI_ENABLED=yes" >> $config_host_mak  
    echo "QEMU_GA_MSI_MINGW_DLL_PATH=${QEMU_GA_MSI_MINGW_DLL_PATH}" >> $config_host_mak
    echo "QEMU_GA_MSI_WITH_VSS=${QEMU_GA_MSI_WITH_VSS}" >> $config_host_mak
    echo "QEMU_GA_MSI_ARCH=${QEMU_GA_MSI_ARCH}" >> $config_host_mak
    echo "QEMU_GA_MANUFACTURER=${QEMU_GA_MANUFACTURER}" >> $config_host_mak
    echo "QEMU_GA_DISTRO=${QEMU_GA_DISTRO}" >> $config_host_mak
    echo "QEMU_GA_VERSION=${QEMU_GA_VERSION}" >> $config_host_mak
  fi
else
  echo "CONFIG_POSIX=y" >> $config_host_mak
fi

if test "$linux" = "yes" ; then
  echo "CONFIG_LINUX=y" >> $config_host_mak
fi

if test "$darwin" = "yes" ; then
  echo "CONFIG_DARWIN=y" >> $config_host_mak
fi

if test "$aix" = "yes" ; then
  echo "CONFIG_AIX=y" >> $config_host_mak
fi

if test "$solaris" = "yes" ; then
  echo "CONFIG_SOLARIS=y" >> $config_host_mak
  echo "CONFIG_SOLARIS_VERSION=$solarisrev" >> $config_host_mak
  if test "$needs_libsunmath" = "yes" ; then
    echo "CONFIG_NEEDS_LIBSUNMATH=y" >> $config_host_mak
  fi
fi
if test "$haiku" = "yes" ; then
  echo "CONFIG_HAIKU=y" >> $config_host_mak
fi
if test "$static" = "yes" ; then
  echo "CONFIG_STATIC=y" >> $config_host_mak
fi
if test "$profiler" = "yes" ; then
  echo "CONFIG_PROFILER=y" >> $config_host_mak
fi
if test "$slirp" = "yes" ; then
  echo "CONFIG_SLIRP=y" >> $config_host_mak
  echo "CONFIG_SMBD_COMMAND=\"$smbd\"" >> $config_host_mak
fi
if test "$vde" = "yes" ; then
  echo "CONFIG_VDE=y" >> $config_host_mak
fi
if test "$netmap" = "yes" ; then
  echo "CONFIG_NETMAP=y" >> $config_host_mak
fi
if test "$l2tpv3" = "yes" ; then
  echo "CONFIG_L2TPV3=y" >> $config_host_mak
fi
if test "$cap_ng" = "yes" ; then
  echo "CONFIG_LIBCAP=y" >> $config_host_mak
fi
echo "CONFIG_AUDIO_DRIVERS=$audio_drv_list" >> $config_host_mak
for drv in $audio_drv_list; do
    def=CONFIG_`echo $drv | LC_ALL=C tr '[a-z]' '[A-Z]'`
    echo "$def=y" >> $config_host_mak
done
if test "$audio_pt_int" = "yes" ; then
  echo "CONFIG_AUDIO_PT_INT=y" >> $config_host_mak
fi
if test "$audio_win_int" = "yes" ; then
  echo "CONFIG_AUDIO_WIN_INT=y" >> $config_host_mak
fi
echo "CONFIG_BDRV_RW_WHITELIST=$block_drv_rw_whitelist" >> $config_host_mak
echo "CONFIG_BDRV_RO_WHITELIST=$block_drv_ro_whitelist" >> $config_host_mak
if test "$vnc" = "yes" ; then
  echo "CONFIG_VNC=y" >> $config_host_mak
fi
if test "$vnc_sasl" = "yes" ; then
  echo "CONFIG_VNC_SASL=y" >> $config_host_mak
fi
if test "$vnc_jpeg" = "yes" ; then
  echo "CONFIG_VNC_JPEG=y" >> $config_host_mak
fi
if test "$vnc_png" = "yes" ; then
  echo "CONFIG_VNC_PNG=y" >> $config_host_mak
fi
if test "$fnmatch" = "yes" ; then
  echo "CONFIG_FNMATCH=y" >> $config_host_mak
fi
if test "$uuid" = "yes" ; then
  echo "CONFIG_UUID=y" >> $config_host_mak
fi
if test "$xfs" = "yes" ; then
  echo "CONFIG_XFS=y" >> $config_host_mak
fi
qemu_version=`head $source_path/VERSION`
echo "VERSION=$qemu_version" >>$config_host_mak
echo "PKGVERSION=$pkgversion" >>$config_host_mak
echo "SRC_PATH=$source_path" >> $config_host_mak
echo "TARGET_DIRS=$target_list" >> $config_host_mak
if [ "$docs" = "yes" ] ; then
  echo "BUILD_DOCS=yes" >> $config_host_mak
fi
if test "$modules" = "yes"; then
  # $shacmd can generate a hash started with digit, which the compiler doesn't
  # like as an symbol. So prefix it with an underscore
  echo "CONFIG_STAMP=_`(echo $qemu_version; echo $pkgversion; cat $0) | $shacmd - | cut -f1 -d\ `" >> $config_host_mak
  echo "CONFIG_MODULES=y" >> $config_host_mak
fi
if test "$sdl" = "yes" ; then
  echo "CONFIG_SDL=y" >> $config_host_mak
  echo "CONFIG_SDLABI=$sdlabi" >> $config_host_mak
  echo "SDL_CFLAGS=$sdl_cflags" >> $config_host_mak
fi
if test "$cocoa" = "yes" ; then
  echo "CONFIG_COCOA=y" >> $config_host_mak
fi
if test "$curses" = "yes" ; then
  echo "CONFIG_CURSES=y" >> $config_host_mak
fi
if test "$utimens" = "yes" ; then
  echo "CONFIG_UTIMENSAT=y" >> $config_host_mak
fi
if test "$pipe2" = "yes" ; then
  echo "CONFIG_PIPE2=y" >> $config_host_mak
fi
if test "$accept4" = "yes" ; then
  echo "CONFIG_ACCEPT4=y" >> $config_host_mak
fi
if test "$splice" = "yes" ; then
  echo "CONFIG_SPLICE=y" >> $config_host_mak
fi
if test "$eventfd" = "yes" ; then
  echo "CONFIG_EVENTFD=y" >> $config_host_mak
fi
if test "$memfd" = "yes" ; then
  echo "CONFIG_MEMFD=y" >> $config_host_mak
fi
if test "$fallocate" = "yes" ; then
  echo "CONFIG_FALLOCATE=y" >> $config_host_mak
fi
if test "$fallocate_punch_hole" = "yes" ; then
  echo "CONFIG_FALLOCATE_PUNCH_HOLE=y" >> $config_host_mak
fi
if test "$fallocate_zero_range" = "yes" ; then
  echo "CONFIG_FALLOCATE_ZERO_RANGE=y" >> $config_host_mak
fi
if test "$posix_fallocate" = "yes" ; then
  echo "CONFIG_POSIX_FALLOCATE=y" >> $config_host_mak
fi
if test "$sync_file_range" = "yes" ; then
  echo "CONFIG_SYNC_FILE_RANGE=y" >> $config_host_mak
fi
if test "$fiemap" = "yes" ; then
  echo "CONFIG_FIEMAP=y" >> $config_host_mak
fi
if test "$dup3" = "yes" ; then
  echo "CONFIG_DUP3=y" >> $config_host_mak
fi
if test "$ppoll" = "yes" ; then
  echo "CONFIG_PPOLL=y" >> $config_host_mak
fi
if test "$prctl_pr_set_timerslack" = "yes" ; then
  echo "CONFIG_PRCTL_PR_SET_TIMERSLACK=y" >> $config_host_mak
fi
if test "$epoll" = "yes" ; then
  echo "CONFIG_EPOLL=y" >> $config_host_mak
fi
if test "$epoll_create1" = "yes" ; then
  echo "CONFIG_EPOLL_CREATE1=y" >> $config_host_mak
fi
if test "$epoll_pwait" = "yes" ; then
  echo "CONFIG_EPOLL_PWAIT=y" >> $config_host_mak
fi
if test "$sendfile" = "yes" ; then
  echo "CONFIG_SENDFILE=y" >> $config_host_mak
fi
if test "$timerfd" = "yes" ; then
  echo "CONFIG_TIMERFD=y" >> $config_host_mak
fi
if test "$setns" = "yes" ; then
  echo "CONFIG_SETNS=y" >> $config_host_mak
fi
if test "$inotify" = "yes" ; then
  echo "CONFIG_INOTIFY=y" >> $config_host_mak
fi
if test "$inotify1" = "yes" ; then
  echo "CONFIG_INOTIFY1=y" >> $config_host_mak
fi
if test "$byteswap_h" = "yes" ; then
  echo "CONFIG_BYTESWAP_H=y" >> $config_host_mak
fi
if test "$bswap_h" = "yes" ; then
  echo "CONFIG_MACHINE_BSWAP_H=y" >> $config_host_mak
fi
if test "$curl" = "yes" ; then
  echo "CONFIG_CURL=m" >> $config_host_mak
  echo "CURL_CFLAGS=$curl_cflags" >> $config_host_mak
  echo "CURL_LIBS=$curl_libs" >> $config_host_mak
fi
if test "$brlapi" = "yes" ; then
  echo "CONFIG_BRLAPI=y" >> $config_host_mak
fi
if test "$bluez" = "yes" ; then
  echo "CONFIG_BLUEZ=y" >> $config_host_mak
  echo "BLUEZ_CFLAGS=$bluez_cflags" >> $config_host_mak
fi
if test "$glib_subprocess" = "yes" ; then
  echo "CONFIG_HAS_GLIB_SUBPROCESS_TESTS=y" >> $config_host_mak
fi
echo "GLIB_CFLAGS=$glib_cflags" >> $config_host_mak
if test "$gtk" = "yes" ; then
  echo "CONFIG_GTK=y" >> $config_host_mak
  echo "CONFIG_GTKABI=$gtkabi" >> $config_host_mak
  echo "GTK_CFLAGS=$gtk_cflags" >> $config_host_mak
  echo "GTK_LIBS=$gtk_libs" >> $config_host_mak
  if test "$gtk_gl" = "yes" ; then
    echo "CONFIG_GTK_GL=y" >> $config_host_mak
  fi
fi
if test "$gnutls" = "yes" ; then
  echo "CONFIG_GNUTLS=y" >> $config_host_mak
fi
if test "$gnutls_hash" = "yes" ; then
  echo "CONFIG_GNUTLS_HASH=y" >> $config_host_mak
fi
if test "$gcrypt" = "yes" ; then
  echo "CONFIG_GCRYPT=y" >> $config_host_mak
fi
if test "$nettle" = "yes" ; then
  echo "CONFIG_NETTLE=y" >> $config_host_mak
  echo "CONFIG_NETTLE_VERSION_MAJOR=${nettle_version%%.*}" >> $config_host_mak
fi
if test "$tasn1" = "yes" ; then
  echo "CONFIG_TASN1=y" >> $config_host_mak
fi
if test "$have_ifaddrs_h" = "yes" ; then
    echo "HAVE_IFADDRS_H=y" >> $config_host_mak
fi
if test "$vte" = "yes" ; then
  echo "CONFIG_VTE=y" >> $config_host_mak
  echo "VTE_CFLAGS=$vte_cflags" >> $config_host_mak
fi
if test "$virglrenderer" = "yes" ; then
  echo "CONFIG_VIRGL=y" >> $config_host_mak
  echo "VIRGL_CFLAGS=$virgl_cflags" >> $config_host_mak
  echo "VIRGL_LIBS=$virgl_libs" >> $config_host_mak
fi
if test "$xen" = "yes" ; then
  echo "CONFIG_XEN_BACKEND=y" >> $config_host_mak
  echo "CONFIG_XEN_CTRL_INTERFACE_VERSION=$xen_ctrl_version" >> $config_host_mak
  if test "$xen_pv_domain_build" = "yes" ; then
    echo "CONFIG_XEN_PV_DOMAIN_BUILD=y" >> $config_host_mak
  fi
fi
if test "$linux_aio" = "yes" ; then
  echo "CONFIG_LINUX_AIO=y" >> $config_host_mak
fi
if test "$attr" = "yes" ; then
  echo "CONFIG_ATTR=y" >> $config_host_mak
fi
if test "$libattr" = "yes" ; then
  echo "CONFIG_LIBATTR=y" >> $config_host_mak
fi
if test "$virtfs" = "yes" ; then
  echo "CONFIG_VIRTFS=y" >> $config_host_mak
fi
if test "$vhost_scsi" = "yes" ; then
  echo "CONFIG_VHOST_SCSI=y" >> $config_host_mak
fi
if test "$vhost_net" = "yes" ; then
  echo "CONFIG_VHOST_NET_USED=y" >> $config_host_mak
fi
if test "$blobs" = "yes" ; then
  echo "INSTALL_BLOBS=yes" >> $config_host_mak
fi
if test "$iovec" = "yes" ; then
  echo "CONFIG_IOVEC=y" >> $config_host_mak
fi
if test "$preadv" = "yes" ; then
  echo "CONFIG_PREADV=y" >> $config_host_mak
fi
if test "$fdt" = "yes" ; then
  echo "CONFIG_FDT=y" >> $config_host_mak
fi
if test "$signalfd" = "yes" ; then
  echo "CONFIG_SIGNALFD=y" >> $config_host_mak
fi
if test "$tcg_interpreter" = "yes" ; then
  echo "CONFIG_TCG_INTERPRETER=y" >> $config_host_mak
fi
if test "$fdatasync" = "yes" ; then
  echo "CONFIG_FDATASYNC=y" >> $config_host_mak
fi
if test "$madvise" = "yes" ; then
  echo "CONFIG_MADVISE=y" >> $config_host_mak
fi
if test "$posix_madvise" = "yes" ; then
  echo "CONFIG_POSIX_MADVISE=y" >> $config_host_mak
fi
if test "$sigev_thread_id" = "yes" ; then
  echo "CONFIG_SIGEV_THREAD_ID=y" >> $config_host_mak
fi

if test "$spice" = "yes" ; then
  echo "CONFIG_SPICE=y" >> $config_host_mak
fi

if test "$smartcard" = "yes" ; then
  echo "CONFIG_SMARTCARD=y" >> $config_host_mak
fi

if test "$libusb" = "yes" ; then
  echo "CONFIG_USB_LIBUSB=y" >> $config_host_mak
fi

if test "$usb_redir" = "yes" ; then
  echo "CONFIG_USB_REDIR=y" >> $config_host_mak
fi

if test "$opengl" = "yes" ; then
  echo "CONFIG_OPENGL=y" >> $config_host_mak
  echo "OPENGL_CFLAGS=$opengl_cflags" >> $config_host_mak
  echo "OPENGL_LIBS=$opengl_libs" >> $config_host_mak
  if test "$opengl_dmabuf" = "yes" ; then
    echo "CONFIG_OPENGL_DMABUF=y" >> $config_host_mak
  fi
fi

if test "$avx2_opt" = "yes" ; then
  echo "CONFIG_AVX2_OPT=y" >> $config_host_mak
fi

if test "$lzo" = "yes" ; then
  echo "CONFIG_LZO=y" >> $config_host_mak
fi

if test "$snappy" = "yes" ; then
  echo "CONFIG_SNAPPY=y" >> $config_host_mak
fi

if test "$bzip2" = "yes" ; then
  echo "CONFIG_BZIP2=y" >> $config_host_mak
  echo "BZIP2_LIBS=-lbz2" >> $config_host_mak
fi

if test "$libiscsi" = "yes" ; then
  echo "CONFIG_LIBISCSI=m" >> $config_host_mak
  echo "LIBISCSI_CFLAGS=$libiscsi_cflags" >> $config_host_mak
  echo "LIBISCSI_LIBS=$libiscsi_libs" >> $config_host_mak
fi

if test "$libnfs" = "yes" ; then
  echo "CONFIG_LIBNFS=y" >> $config_host_mak
fi

if test "$seccomp" = "yes"; then
  echo "CONFIG_SECCOMP=y" >> $config_host_mak
fi

# XXX: suppress that
if [ "$bsd" = "yes" ] ; then
  echo "CONFIG_BSD=y" >> $config_host_mak
fi

if test "$zero_malloc" = "yes" ; then
  echo "CONFIG_ZERO_MALLOC=y" >> $config_host_mak
fi
if test "$localtime_r" = "yes" ; then
  echo "CONFIG_LOCALTIME_R=y" >> $config_host_mak
fi
if test "$qom_cast_debug" = "yes" ; then
  echo "CONFIG_QOM_CAST_DEBUG=y" >> $config_host_mak
fi
if test "$rbd" = "yes" ; then
  echo "CONFIG_RBD=m" >> $config_host_mak
  echo "RBD_CFLAGS=$rbd_cflags" >> $config_host_mak
  echo "RBD_LIBS=$rbd_libs" >> $config_host_mak
fi

echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
if test "$coroutine_pool" = "yes" ; then
  echo "CONFIG_COROUTINE_POOL=1" >> $config_host_mak
else
  echo "CONFIG_COROUTINE_POOL=0" >> $config_host_mak
fi

if test "$open_by_handle_at" = "yes" ; then
  echo "CONFIG_OPEN_BY_HANDLE=y" >> $config_host_mak
fi

if test "$linux_magic_h" = "yes" ; then
  echo "CONFIG_LINUX_MAGIC_H=y" >> $config_host_mak
fi

if test "$pragma_diagnostic_available" = "yes" ; then
  echo "CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE=y" >> $config_host_mak
fi

if test "$valgrind_h" = "yes" ; then
  echo "CONFIG_VALGRIND_H=y" >> $config_host_mak
fi

if test "$has_environ" = "yes" ; then
  echo "CONFIG_HAS_ENVIRON=y" >> $config_host_mak
fi

if test "$cpuid_h" = "yes" ; then
  echo "CONFIG_CPUID_H=y" >> $config_host_mak
fi

if test "$int128" = "yes" ; then
  echo "CONFIG_INT128=y" >> $config_host_mak
fi

if test "$getauxval" = "yes" ; then
  echo "CONFIG_GETAUXVAL=y" >> $config_host_mak
fi

if test "$glusterfs" = "yes" ; then
  echo "CONFIG_GLUSTERFS=m" >> $config_host_mak
  echo "GLUSTERFS_CFLAGS=$glusterfs_cflags" >> $config_host_mak
  echo "GLUSTERFS_LIBS=$glusterfs_libs" >> $config_host_mak
fi

if test "$glusterfs_discard" = "yes" ; then
  echo "CONFIG_GLUSTERFS_DISCARD=y" >> $config_host_mak
fi

if test "$glusterfs_zerofill" = "yes" ; then
  echo "CONFIG_GLUSTERFS_ZEROFILL=y" >> $config_host_mak
fi

if test "$archipelago" = "yes" ; then
  echo "CONFIG_ARCHIPELAGO=m" >> $config_host_mak
  echo "ARCHIPELAGO_LIBS=$archipelago_libs" >> $config_host_mak
fi

if test "$libssh2" = "yes" ; then
  echo "CONFIG_LIBSSH2=m" >> $config_host_mak
  echo "LIBSSH2_CFLAGS=$libssh2_cflags" >> $config_host_mak
  echo "LIBSSH2_LIBS=$libssh2_libs" >> $config_host_mak
fi

if test "$vhdx" = "yes" ; then
  echo "CONFIG_VHDX=y" >> $config_host_mak
fi

# USB host support
if test "$libusb" = "yes"; then
  echo "HOST_USB=libusb legacy" >> $config_host_mak
else
  echo "HOST_USB=stub" >> $config_host_mak
fi

# TPM passthrough support?
if test "$tpm" = "yes"; then
  echo 'CONFIG_TPM=$(CONFIG_SOFTMMU)' >> $config_host_mak
  if test "$tpm_passthrough" = "yes"; then
    echo "CONFIG_TPM_PASSTHROUGH=y" >> $config_host_mak
  fi
fi

echo "TRACE_BACKENDS=$trace_backends" >> $config_host_mak
if have_backend "nop"; then
  echo "CONFIG_TRACE_NOP=y" >> $config_host_mak
fi
if have_backend "simple"; then
  echo "CONFIG_TRACE_SIMPLE=y" >> $config_host_mak
  # Set the appropriate trace file.
  trace_file="\"$trace_file-\" FMT_pid"
fi
if have_backend "log"; then
  echo "CONFIG_TRACE_LOG=y" >> $config_host_mak
fi
if have_backend "ust"; then
  echo "CONFIG_TRACE_UST=y" >> $config_host_mak
fi
if have_backend "dtrace"; then
  echo "CONFIG_TRACE_DTRACE=y" >> $config_host_mak
  if test "$trace_backend_stap" = "yes" ; then
    echo "CONFIG_TRACE_SYSTEMTAP=y" >> $config_host_mak
  fi
fi
if have_backend "ftrace"; then
  if test "$linux" = "yes" ; then
    echo "CONFIG_TRACE_FTRACE=y" >> $config_host_mak
  else
    feature_not_found "ftrace(trace backend)" "ftrace requires Linux"
  fi
fi
echo "CONFIG_TRACE_FILE=$trace_file" >> $config_host_mak

if test "$rdma" = "yes" ; then
  echo "CONFIG_RDMA=y" >> $config_host_mak
fi

# Hold two types of flag:
#   CONFIG_THREAD_SETNAME_BYTHREAD  - we've got a way of setting the name on
#                                     a thread we have a handle to
#   CONFIG_PTHREAD_SETNAME_NP       - A way of doing it on a particular
#                                     platform
if test "$pthread_setname_np" = "yes" ; then
  echo "CONFIG_THREAD_SETNAME_BYTHREAD=y" >> $config_host_mak
  echo "CONFIG_PTHREAD_SETNAME_NP=y" >> $config_host_mak
fi

if test "$tcg_interpreter" = "yes"; then
  QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/tci $QEMU_INCLUDES"
elif test "$ARCH" = "sparc64" ; then
  QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/sparc $QEMU_INCLUDES"
elif test "$ARCH" = "s390x" ; then
  QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/s390 $QEMU_INCLUDES"
elif test "$ARCH" = "x86_64" -o "$ARCH" = "x32" ; then
  QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/i386 $QEMU_INCLUDES"
elif test "$ARCH" = "ppc64" ; then
  QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/ppc $QEMU_INCLUDES"
else
  QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/\$(ARCH) $QEMU_INCLUDES"
fi
QEMU_INCLUDES="-I\$(SRC_PATH)/tcg $QEMU_INCLUDES"

echo "TOOLS=$tools" >> $config_host_mak
echo "ROMS=$roms" >> $config_host_mak
echo "MAKE=$make" >> $config_host_mak
echo "INSTALL=$install" >> $config_host_mak
echo "INSTALL_DIR=$install -d -m 0755" >> $config_host_mak
echo "INSTALL_DATA=$install -c -m 0644" >> $config_host_mak
echo "INSTALL_PROG=$install -c -m 0755" >> $config_host_mak
echo "INSTALL_LIB=$install -c -m 0644" >> $config_host_mak
echo "PYTHON=$python" >> $config_host_mak
echo "CC=$cc" >> $config_host_mak
if $iasl -h > /dev/null 2>&1; then
  echo "IASL=$iasl" >> $config_host_mak
fi
echo "CC_I386=$cc_i386" >> $config_host_mak
echo "HOST_CC=$host_cc" >> $config_host_mak
echo "CXX=$cxx" >> $config_host_mak
echo "OBJCC=$objcc" >> $config_host_mak
echo "AR=$ar" >> $config_host_mak
echo "ARFLAGS=$ARFLAGS" >> $config_host_mak
echo "AS=$as" >> $config_host_mak
echo "CPP=$cpp" >> $config_host_mak
echo "OBJCOPY=$objcopy" >> $config_host_mak
echo "LD=$ld" >> $config_host_mak
echo "NM=$nm" >> $config_host_mak
echo "WINDRES=$windres" >> $config_host_mak
echo "CFLAGS=$CFLAGS" >> $config_host_mak
echo "CFLAGS_NOPIE=$CFLAGS_NOPIE" >> $config_host_mak
echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak
echo "QEMU_INCLUDES=$QEMU_INCLUDES" >> $config_host_mak
if test "$sparse" = "yes" ; then
  echo "CC           := REAL_CC=\"\$(CC)\" cgcc"       >> $config_host_mak
  echo "CPP          := REAL_CC=\"\$(CPP)\" cgcc"      >> $config_host_mak
  echo "CXX          := REAL_CC=\"\$(CXX)\" cgcc"      >> $config_host_mak
  echo "HOST_CC      := REAL_CC=\"\$(HOST_CC)\" cgcc"  >> $config_host_mak
  echo "QEMU_CFLAGS  += -Wbitwise -Wno-transparent-union -Wno-old-initializer -Wno-non-pointer-null" >> $config_host_mak
fi
if test "$cross_prefix" != ""; then
  echo "AUTOCONF_HOST := --host=${cross_prefix%-}"     >> $config_host_mak
else
  echo "AUTOCONF_HOST := "                             >> $config_host_mak
fi
echo "LDFLAGS=$LDFLAGS" >> $config_host_mak
echo "LDFLAGS_NOPIE=$LDFLAGS_NOPIE" >> $config_host_mak
echo "LIBS+=$LIBS" >> $config_host_mak
echo "LIBS_TOOLS+=$libs_tools" >> $config_host_mak
echo "EXESUF=$EXESUF" >> $config_host_mak
echo "DSOSUF=$DSOSUF" >> $config_host_mak
echo "LDFLAGS_SHARED=$LDFLAGS_SHARED" >> $config_host_mak
echo "LIBS_QGA+=$libs_qga" >> $config_host_mak
echo "TASN1_LIBS=$tasn1_libs" >> $config_host_mak
echo "TASN1_CFLAGS=$tasn1_cflags" >> $config_host_mak
echo "POD2MAN=$POD2MAN" >> $config_host_mak
echo "TRANSLATE_OPT_CFLAGS=$TRANSLATE_OPT_CFLAGS" >> $config_host_mak
if test "$gcov" = "yes" ; then
  echo "CONFIG_GCOV=y" >> $config_host_mak
  echo "GCOV=$gcov_tool" >> $config_host_mak
fi

# use included Linux headers
if test "$linux" = "yes" ; then
  mkdir -p linux-headers
  case "$cpu" in
  i386|x86_64|x32)
    linux_arch=x86
    ;;
  ppcemb|ppc|ppc64)
    linux_arch=powerpc
    ;;
  s390x)
    linux_arch=s390
    ;;
  aarch64)
    linux_arch=arm64
    ;;
  mips64)
    linux_arch=mips
    ;;
  *)
    # For most CPUs the kernel architecture name and QEMU CPU name match.
    linux_arch="$cpu"
    ;;
  esac
    # For non-KVM architectures we will not have asm headers
    if [ -e "$source_path/linux-headers/asm-$linux_arch" ]; then
      symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
    fi
fi

for target in $target_list; do
target_dir="$target"
config_target_mak=$target_dir/config-target.mak
target_name=`echo $target | cut -d '-' -f 1`
target_bigendian="no"

case "$target_name" in
  armeb|lm32|m68k|microblaze|mips|mipsn32|mips64|moxie|or32|ppc|ppcemb|ppc64|ppc64abi32|s390x|sh4eb|sparc|sparc64|sparc32plus|xtensaeb)
  target_bigendian=yes
  ;;
esac
target_softmmu="no"
target_user_only="no"
target_linux_user="no"
target_bsd_user="no"
case "$target" in
  ${target_name}-softmmu)
    target_softmmu="yes"
    ;;
  ${target_name}-linux-user)
    if test "$linux" != "yes" ; then
      error_exit "Target '$target' is only available on a Linux host"
    fi
    target_user_only="yes"
    target_linux_user="yes"
    ;;
  ${target_name}-bsd-user)
    if test "$bsd" != "yes" ; then
      error_exit "Target '$target' is only available on a BSD host"
    fi
    target_user_only="yes"
    target_bsd_user="yes"
    ;;
  *)
    error_exit "Target '$target' not recognised"
    exit 1
    ;;
esac

mkdir -p $target_dir
echo "# Automatically generated by configure - do not modify" > $config_target_mak

bflt="no"
interp_prefix1=`echo "$interp_prefix" | sed "s/%M/$target_name/g"`
gdb_xml_files=""

TARGET_ARCH="$target_name"
TARGET_BASE_ARCH=""
TARGET_ABI_DIR=""

case "$target_name" in
  i386)
  ;;
  x86_64)
    TARGET_BASE_ARCH=i386
  ;;
  alpha)
  ;;
  arm|armeb)
    TARGET_ARCH=arm
    bflt="yes"
    gdb_xml_files="arm-core.xml arm-vfp.xml arm-vfp3.xml arm-neon.xml"
  ;;
  aarch64)
    TARGET_BASE_ARCH=arm
    bflt="yes"
    gdb_xml_files="aarch64-core.xml aarch64-fpu.xml arm-core.xml arm-vfp.xml arm-vfp3.xml arm-neon.xml"
  ;;
  cris)
  ;;
  lm32)
  ;;
  m68k)
    bflt="yes"
    gdb_xml_files="cf-core.xml cf-fp.xml"
  ;;
  microblaze|microblazeel)
    TARGET_ARCH=microblaze
    bflt="yes"
  ;;
  mips|mipsel)
    TARGET_ARCH=mips
    echo "TARGET_ABI_MIPSO32=y" >> $config_target_mak
  ;;
  mipsn32|mipsn32el)
    TARGET_ARCH=mips64
    TARGET_BASE_ARCH=mips
    echo "TARGET_ABI_MIPSN32=y" >> $config_target_mak
    echo "TARGET_ABI32=y" >> $config_target_mak
  ;;
  mips64|mips64el)
    TARGET_ARCH=mips64
    TARGET_BASE_ARCH=mips
    echo "TARGET_ABI_MIPSN64=y" >> $config_target_mak
  ;;
  moxie)
  ;;
  or32)
    TARGET_ARCH=openrisc
    TARGET_BASE_ARCH=openrisc
  ;;
  ppc)
    gdb_xml_files="power-core.xml power-fpu.xml power-altivec.xml power-spe.xml"
  ;;
  ppcemb)
    TARGET_BASE_ARCH=ppc
    TARGET_ABI_DIR=ppc
    gdb_xml_files="power-core.xml power-fpu.xml power-altivec.xml power-spe.xml"
  ;;
  ppc64)
    TARGET_BASE_ARCH=ppc
    TARGET_ABI_DIR=ppc
    gdb_xml_files="power64-core.xml power-fpu.xml power-altivec.xml power-spe.xml power-vsx.xml"
  ;;
  ppc64le)
    TARGET_ARCH=ppc64
    TARGET_BASE_ARCH=ppc
    TARGET_ABI_DIR=ppc
    gdb_xml_files="power64-core.xml power-fpu.xml power-altivec.xml power-spe.xml power-vsx.xml"
  ;;
  ppc64abi32)
    TARGET_ARCH=ppc64
    TARGET_BASE_ARCH=ppc
    TARGET_ABI_DIR=ppc
    echo "TARGET_ABI32=y" >> $config_target_mak
    gdb_xml_files="power64-core.xml power-fpu.xml power-altivec.xml power-spe.xml power-vsx.xml"
  ;;
  sh4|sh4eb)
    TARGET_ARCH=sh4
    bflt="yes"
  ;;
  sparc)
  ;;
  sparc64)
    TARGET_BASE_ARCH=sparc
  ;;
  sparc32plus)
    TARGET_ARCH=sparc64
    TARGET_BASE_ARCH=sparc
    TARGET_ABI_DIR=sparc
    echo "TARGET_ABI32=y" >> $config_target_mak
  ;;
  s390x)
    gdb_xml_files="s390x-core64.xml s390-acr.xml s390-fpr.xml s390-vx.xml s390-cr.xml s390-virt.xml"
  ;;
  tilegx)
  ;;
  tricore)
  ;;
  unicore32)
  ;;
  xtensa|xtensaeb)
    TARGET_ARCH=xtensa
  ;;
  *)
    error_exit "Unsupported target CPU"
  ;;
esac
# TARGET_BASE_ARCH needs to be defined after TARGET_ARCH
if [ "$TARGET_BASE_ARCH" = "" ]; then
  TARGET_BASE_ARCH=$TARGET_ARCH
fi

symlink "$source_path/Makefile.target" "$target_dir/Makefile"

upper() {
    echo "$@"| LC_ALL=C tr '[a-z]' '[A-Z]'
}

target_arch_name="`upper $TARGET_ARCH`"
echo "TARGET_$target_arch_name=y" >> $config_target_mak
echo "TARGET_NAME=$target_name" >> $config_target_mak
echo "TARGET_BASE_ARCH=$TARGET_BASE_ARCH" >> $config_target_mak
if [ "$TARGET_ABI_DIR" = "" ]; then
  TARGET_ABI_DIR=$TARGET_ARCH
fi
echo "TARGET_ABI_DIR=$TARGET_ABI_DIR" >> $config_target_mak
if [ "$HOST_VARIANT_DIR" != "" ]; then
    echo "HOST_VARIANT_DIR=$HOST_VARIANT_DIR" >> $config_target_mak
fi
case "$target_name" in
  i386|x86_64)
    if test "$xen" = "yes" -a "$target_softmmu" = "yes" ; then
      echo "CONFIG_XEN=y" >> $config_target_mak
      if test "$xen_pci_passthrough" = yes; then
        echo "CONFIG_XEN_PCI_PASSTHROUGH=y" >> "$config_target_mak"
      fi
    fi
    ;;
  *)
esac
case "$target_name" in
  aarch64|arm|i386|x86_64|ppcemb|ppc|ppc64|s390x|mipsel|mips)
    # Make sure the target and host cpus are compatible
    if test "$kvm" = "yes" -a "$target_softmmu" = "yes" -a \
      \( "$target_name" = "$cpu" -o \
      \( "$target_name" = "ppcemb" -a "$cpu" = "ppc" \) -o \
      \( "$target_name" = "ppc64"  -a "$cpu" = "ppc" \) -o \
      \( "$target_name" = "ppc"    -a "$cpu" = "ppc64" \) -o \
      \( "$target_name" = "ppcemb" -a "$cpu" = "ppc64" \) -o \
      \( "$target_name" = "mipsel" -a "$cpu" = "mips" \) -o \
      \( "$target_name" = "x86_64" -a "$cpu" = "i386"   \) -o \
      \( "$target_name" = "i386"   -a "$cpu" = "x86_64" \) -o \
      \( "$target_name" = "x86_64" -a "$cpu" = "x32"   \) -o \
      \( "$target_name" = "i386"   -a "$cpu" = "x32" \) \) ; then
      echo "CONFIG_KVM=y" >> $config_target_mak
      if test "$vhost_net" = "yes" ; then
        echo "CONFIG_VHOST_NET=y" >> $config_target_mak
        echo "CONFIG_VHOST_NET_TEST_$target_name=y" >> $config_host_mak
      fi
    fi
esac
if test "$target_bigendian" = "yes" ; then
  echo "TARGET_WORDS_BIGENDIAN=y" >> $config_target_mak
fi
if test "$target_softmmu" = "yes" ; then
  echo "CONFIG_SOFTMMU=y" >> $config_target_mak
fi
if test "$target_user_only" = "yes" ; then
  echo "CONFIG_USER_ONLY=y" >> $config_target_mak
  echo "CONFIG_QEMU_INTERP_PREFIX=\"$interp_prefix1\"" >> $config_target_mak
fi
if test "$target_linux_user" = "yes" ; then
  echo "CONFIG_LINUX_USER=y" >> $config_target_mak
fi
list=""
if test ! -z "$gdb_xml_files" ; then
  for x in $gdb_xml_files; do
    list="$list $source_path/gdb-xml/$x"
  done
  echo "TARGET_XML_FILES=$list" >> $config_target_mak
fi

if test "$target_user_only" = "yes" -a "$bflt" = "yes"; then
  echo "TARGET_HAS_BFLT=y" >> $config_target_mak
fi
if test "$target_bsd_user" = "yes" ; then
  echo "CONFIG_BSD_USER=y" >> $config_target_mak
fi

# generate QEMU_CFLAGS/LDFLAGS for targets

cflags=""
ldflags=""

disas_config() {
  echo "CONFIG_${1}_DIS=y" >> $config_target_mak
  echo "CONFIG_${1}_DIS=y" >> config-all-disas.mak
}

for i in $ARCH $TARGET_BASE_ARCH ; do
  case "$i" in
  alpha)
    disas_config "ALPHA"
  ;;
  aarch64)
    if test -n "${cxx}"; then
      disas_config "ARM_A64"
    fi
  ;;
  arm)
    disas_config "ARM"
    if test -n "${cxx}"; then
      disas_config "ARM_A64"
    fi
  ;;
  cris)
    disas_config "CRIS"
  ;;
  hppa)
    disas_config "HPPA"
  ;;
  i386|x86_64|x32)
    disas_config "I386"
  ;;
  ia64*)
    disas_config "IA64"
  ;;
  lm32)
    disas_config "LM32"
  ;;
  m68k)
    disas_config "M68K"
  ;;
  microblaze*)
    disas_config "MICROBLAZE"
  ;;
  mips*)
    disas_config "MIPS"
  ;;
  moxie*)
    disas_config "MOXIE"
  ;;
  or32)
    disas_config "OPENRISC"
  ;;
  ppc*)
    disas_config "PPC"
  ;;
  s390*)
    disas_config "S390"
  ;;
  sh4)
    disas_config "SH4"
  ;;
  sparc*)
    disas_config "SPARC"
  ;;
  xtensa*)
    disas_config "XTENSA"
  ;;
  esac
done
if test "$tcg_interpreter" = "yes" ; then
  disas_config "TCI"
fi

case "$ARCH" in
alpha)
  # Ensure there's only a single GP
  cflags="-msmall-data $cflags"
;;
esac

if test "$gprof" = "yes" ; then
  echo "TARGET_GPROF=yes" >> $config_target_mak
  if test "$target_linux_user" = "yes" ; then
    cflags="-p $cflags"
    ldflags="-p $ldflags"
  fi
  if test "$target_softmmu" = "yes" ; then
    ldflags="-p $ldflags"
    echo "GPROF_CFLAGS=-p" >> $config_target_mak
  fi
fi

if test "$target_linux_user" = "yes" -o "$target_bsd_user" = "yes" ; then
  ldflags="$ldflags $textseg_ldflags"
fi

echo "LDFLAGS+=$ldflags" >> $config_target_mak
echo "QEMU_CFLAGS+=$cflags" >> $config_target_mak

done # for target in $targets

if [ "$pixman" = "internal" ]; then
  echo "config-host.h: subdir-pixman" >> $config_host_mak
fi

if [ "$dtc_internal" = "yes" ]; then
  echo "config-host.h: subdir-dtc" >> $config_host_mak
fi

if test "$numa" = "yes"; then
  echo "CONFIG_NUMA=y" >> $config_host_mak
fi

if test "$ccache_cpp2" = "yes"; then
  echo "export CCACHE_CPP2=y" >> $config_host_mak
fi

# build tree in object directory in case the source is not in the current directory
DIRS="tests tests/tcg tests/tcg/cris tests/tcg/lm32 tests/libqos tests/qapi-schema tests/tcg/xtensa tests/qemu-iotests"
DIRS="$DIRS fsdev"
DIRS="$DIRS pc-bios/optionrom pc-bios/spapr-rtas pc-bios/s390-ccw"
DIRS="$DIRS roms/seabios roms/vgabios"
DIRS="$DIRS qapi-generated"
FILES="Makefile tests/tcg/Makefile qdict-test-data.txt"
FILES="$FILES tests/tcg/cris/Makefile tests/tcg/cris/.gdbinit"
FILES="$FILES tests/tcg/lm32/Makefile tests/tcg/xtensa/Makefile po/Makefile"
FILES="$FILES pc-bios/optionrom/Makefile pc-bios/keymaps"
FILES="$FILES pc-bios/spapr-rtas/Makefile"
FILES="$FILES pc-bios/s390-ccw/Makefile"
FILES="$FILES roms/seabios/Makefile roms/vgabios/Makefile"
FILES="$FILES pc-bios/qemu-icon.bmp"
for bios_file in \
    $source_path/pc-bios/*.bin \
    $source_path/pc-bios/*.aml \
    $source_path/pc-bios/*.rom \
    $source_path/pc-bios/*.dtb \
    $source_path/pc-bios/*.img \
    $source_path/pc-bios/openbios-* \
    $source_path/pc-bios/u-boot.* \
    $source_path/pc-bios/palcode-*
do
    FILES="$FILES pc-bios/`basename $bios_file`"
done
for test_file in `find $source_path/tests/acpi-test-data -type f`
do
    FILES="$FILES tests/acpi-test-data`echo $test_file | sed -e 's/.*acpi-test-data//'`"
done
mkdir -p $DIRS
for f in $FILES ; do
    if [ -e "$source_path/$f" ] && [ "$pwd_is_source_path" != "y" ]; then
        symlink "$source_path/$f" "$f"
    fi
done

# temporary config to build submodules
for rom in seabios vgabios ; do
    config_mak=roms/$rom/config.mak
    echo "# Automatically generated by configure - do not modify" > $config_mak
    echo "SRC_PATH=$source_path/roms/$rom" >> $config_mak
    echo "AS=$as" >> $config_mak
    echo "CC=$cc" >> $config_mak
    echo "BCC=bcc" >> $config_mak
    echo "CPP=$cpp" >> $config_mak
    echo "OBJCOPY=objcopy" >> $config_mak
    echo "IASL=$iasl" >> $config_mak
    echo "LD=$ld" >> $config_mak
done

# set up qemu-iotests in this build directory
iotests_common_env="tests/qemu-iotests/common.env"
iotests_check="tests/qemu-iotests/check"

echo "# Automatically generated by configure - do not modify" > "$iotests_common_env"
echo >> "$iotests_common_env"
echo "export PYTHON='$python'" >> "$iotests_common_env"

if [ ! -e "$iotests_check" ]; then
    symlink "$source_path/$iotests_check" "$iotests_check"
fi

# Save the configure command line for later reuse.
cat <<EOD >config.status
#!/bin/sh
# Generated by configure.
# Run this file to recreate the current configuration.
# Compiler output produced by configure, useful for debugging
# configure, is in config.log if it exists.
EOD
printf "exec" >>config.status
printf " '%s'" "$0" "$@" >>config.status
echo >>config.status
chmod +x config.status

rm -r "$TMPDIR1"