gwj / at91sam9263 · Files

#!/bin/sh
#

# qemu configure script (c) 2003 Fabrice Bellard

#
# set temporary file name
if test ! -z "$TMPDIR" ; then
    TMPDIR1="${TMPDIR}"
elif test ! -z "$TEMPDIR" ; then
    TMPDIR1="${TEMPDIR}"
else
    TMPDIR1="/tmp"
fi

TMPC="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}.c"
TMPO="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}.o"
TMPE="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}"
TMPS="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}.S"

TMPI="${TMPDIR1}/qemu-conf-${RANDOM}-$$-${RANDOM}.i"

TMPSDLLOG="${TMPDIR1}/qemu-conf-sdl-$$-${RANDOM}.log"

trap "rm -f $TMPC $TMPO $TMPE $TMPS $TMPI $TMPSDLLOG; exit" 0 2 3 15

# default parameters

prefix=""

interp_prefix="/usr/gnemul/qemu-%M"

static="no"

cross_prefix=""
cc="gcc"

audio_drv_list=""

audio_card_list="ac97 es1370 sb16"
audio_possible_cards="ac97 es1370 sb16 cs4231a adlib gus"

host_cc="gcc"
ar="ar"
make="make"

install="install"

strip="strip"

# parse CC options first
for opt do
  optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`
  case "$opt" in
  --cross-prefix=*) cross_prefix="$optarg"
  ;;
  --cc=*) cc="$optarg"
  ;;
  esac
done

# OS specific
# Using uname is really, really broken.  Once we have the right set of checks
# we can eliminate it's usage altogether

cc="${cross_prefix}${cc}"
ar="${cross_prefix}${ar}"
strip="${cross_prefix}${strip}"

# check that the C compiler works.
cat > $TMPC <<EOF
int main(void) {}
EOF

if $cc $ARCH_CFLAGS -c -o $TMPO $TMPC > /dev/null 2> /dev/null ; then
  : C compiler works ok
else
    echo "ERROR: \"$cc\" either does not exist or does not work"
    exit 1
fi

check_define() {
cat > $TMPC <<EOF
#if !defined($1)
#error Not defined
#endif
int main(void) { return 0; }
EOF
  $cc $ARCH_CFLAGS -c -o $TMPO $TMPC > /dev/null 2> /dev/null
}

if check_define __i386__ ; then
  cpu="i386"
elif check_define __x86_64__ ; then
  cpu="x86_64"

elif check_define __sparc__ ; then
  # We can't check for 64 bit (when gcc is biarch) or V8PLUSA
  # They must be specified using --sparc_cpu
  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

else

  cpu=`uname -m`

fi

target_list=""

case "$cpu" in
  i386|i486|i586|i686|i86pc|BePC)

    cpu="i386"

  ;;

  x86_64|amd64)
    cpu="x86_64"
  ;;
  alpha)
    cpu="alpha"
  ;;

  armv*b)

    cpu="armv4b"
  ;;

  armv*l)

    cpu="armv4l"
  ;;

  cris)
    cpu="cris"

  ;;

  parisc|parisc64)
    cpu="hppa"
  ;;

  ia64)
    cpu="ia64"
  ;;
  m68k)
    cpu="m68k"

  ;;
  mips)
    cpu="mips"
  ;;

  mips64)
    cpu="mips64"
  ;;

  ppc)
    cpu="ppc"
  ;;
  ppc64)
    cpu="ppc64"

  ;;

  s390*)

    cpu="s390"
  ;;

  sparc|sun4[cdmuv])

    cpu="sparc"
  ;;
  sparc64)
    cpu="sparc64"
  ;;

  *)
    cpu="unknown"
  ;;
esac
gprof="no"

debug_tcg="no"

sparse="no"

strip_opt="yes"

bigendian="no"

mingw32="no"
EXESUF=""
gdbstub="yes"

slirp="yes"

vde="yes"

fmod_lib=""
fmod_inc=""

oss_lib=""

vnc_tls="yes"

vnc_sasl="yes"

bsd="no"

linux="no"

solaris="no"

kqemu="no"

profiler="no"

cocoa="no"

check_gfx="yes"

softmmu="yes"

linux_user="no"
darwin_user="no"

bsd_user="no"

build_docs="no"

uname_release=""

curses="yes"

aio="yes"

nptl="yes"

mixemu="no"

bluez="yes"

kvm="yes"

kerneldir=""

aix="no"

blobs="yes"

fdt="yes"

sdl_x11="no"

xen="yes"

pkgversion=""

# OS specific

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'

else
  targetos=`uname -s`
fi

case $targetos in

CYGWIN*)
mingw32="yes"

OS_CFLAGS="-mno-cygwin"

if [ "$cpu" = "i386" ] ; then
    kqemu="yes"
fi

audio_possible_drivers="sdl"

;;

MINGW32*)
mingw32="yes"

if [ "$cpu" = "i386" ] ; then
    kqemu="yes"
fi

audio_possible_drivers="dsound sdl fmod"

;;

GNU/kFreeBSD)

audio_drv_list="oss"

audio_possible_drivers="oss sdl esd pa"

if [ "$cpu" = "i386" -o "$cpu" = "x86_64" ] ; then
    kqemu="yes"
fi
;;

FreeBSD)
bsd="yes"

audio_drv_list="oss"

audio_possible_drivers="oss sdl esd pa"

if [ "$cpu" = "i386" -o "$cpu" = "x86_64" ] ; then

    kqemu="yes"
fi

;;

DragonFly)
bsd="yes"
audio_drv_list="oss"
audio_possible_drivers="oss sdl esd pa"
if [ "$cpu" = "i386" -o "$cpu" = "x86_64" ] ; then
    kqemu="yes"
fi
aio="no"
;;

NetBSD)
bsd="yes"

audio_drv_list="oss"

audio_possible_drivers="oss sdl esd"

oss_lib="-lossaudio"

;;
OpenBSD)
bsd="yes"

openbsd="yes"

audio_drv_list="oss"

audio_possible_drivers="oss sdl esd"

oss_lib="-lossaudio"

;;

Darwin)
bsd="yes"
darwin="yes"

# on Leopard most of the system is 32-bit, so we have to ask the kernel it if we can run 64-bit userspace code

if [ "$cpu" = "i386" ] ; then
    is_x86_64=`sysctl -n hw.optional.x86_64`
    [ "$is_x86_64" = "1" ] && cpu=x86_64

fi
if [ "$cpu" = "x86_64" ] ; then
    OS_CFLAGS="-arch x86_64"
    LDFLAGS="-arch x86_64"
else
    OS_CFLAGS="-mdynamic-no-pic"
fi

darwin_user="yes"

cocoa="yes"

audio_drv_list="coreaudio"

audio_possible_drivers="coreaudio sdl fmod"

OS_LDFLAGS="-framework CoreFoundation -framework IOKit"

;;

SunOS)

    solaris="yes"
    make="gmake"
    install="ginstall"

    needs_libsunmath="no"

    kvm="no"

    solarisrev=`uname -r | cut -f2 -d.`

    # have to select again, because `uname -m` returns i86pc
    # even on an x86_64 box.
    solariscpu=`isainfo -k`
    if test "${solariscpu}" = "amd64" ; then
        cpu="x86_64"
    fi

    if [ "$cpu" = "i386" -o "$cpu" = "x86_64" ] ; then

        if test "$solarisrev" -le 9 ; then
            if test -f /opt/SUNWspro/prod/lib/libsunmath.so.1; then
                needs_libsunmath="yes"
            else
                echo "QEMU will not link correctly on Solaris 8/X86 or 9/x86 without"
                echo "libsunmath from the Sun Studio compilers tools, due to a lack of"
                echo "C99 math features in libm.so in Solaris 8/x86 and Solaris 9/x86"
                echo "Studio 11 can be downloaded from www.sun.com."
                exit 1
            fi
        fi
        if test "$solarisrev" -ge 9 ; then

            kqemu="yes"
        fi

    fi

    if test -f /usr/include/sys/soundcard.h ; then

        audio_drv_list="oss"

    fi

    audio_possible_drivers="oss sdl"

    OS_CFLAGS=-std=gnu99

;;

AIX)
aix="yes"
make="gmake"
;;

*)

audio_drv_list="oss"

audio_possible_drivers="oss alsa sdl esd pa"

linux="yes"

linux_user="yes"

usb="linux"

if [ "$cpu" = "i386" -o "$cpu" = "x86_64" ] ; then

    kqemu="yes"

    audio_possible_drivers="$audio_possible_drivers fmod"

fi

;;

esac

if [ "$bsd" = "yes" ] ; then

  if [ "$darwin" != "yes" ] ; then

    make="gmake"

    usb="bsd"

  fi

  bsd_user="yes"

fi

# find source path

source_path=`dirname "$0"`

source_path_used="no"
workdir=`pwd`

if [ -z "$source_path" ]; then

    source_path=$workdir

else
    source_path=`cd "$source_path"; pwd`

fi

[ -f "$workdir/vl.c" ] || source_path_used="yes"

werror="no"

# generate compile errors on warnings for development builds
#if grep cvs $source_path/VERSION > /dev/null 2>&1 ; then
#werror="yes";
#fi

for opt do

  optarg=`expr "x$opt" : 'x[^=]*=\(.*\)'`

  case "$opt" in

  --help|-h) show_help=yes
  ;;

  --prefix=*) prefix="$optarg"

  ;;

  --interp-prefix=*) interp_prefix="$optarg"

  ;;

  --source-path=*) source_path="$optarg"

  source_path_used="yes"

  ;;

  --cross-prefix=*)

  ;;

  --cc=*)

  ;;

  --host-cc=*) host_cc="$optarg"

  ;;

  --make=*) make="$optarg"

  ;;

  --install=*) install="$optarg"
  ;;

  --extra-cflags=*) CFLAGS="$optarg"

  ;;

  --extra-ldflags=*) LDFLAGS="$optarg"

  ;;

  --cpu=*) cpu="$optarg"

  ;;

  --target-list=*) target_list="$optarg"

  ;;

  --enable-gprof) gprof="yes"
  ;;

  --static) static="yes"
  ;;

  --disable-sdl) sdl="no"
  ;;

  --fmod-lib=*) fmod_lib="$optarg"

  ;;

  --fmod-inc=*) fmod_inc="$optarg"
  ;;

  --oss-lib=*) oss_lib="$optarg"
  ;;

  --audio-card-list=*) audio_card_list=`echo "$optarg" | sed -e 's/,/ /g'`

  ;;

  --audio-drv-list=*) audio_drv_list="$optarg"

  ;;

  --enable-debug-tcg) debug_tcg="yes"
  ;;
  --disable-debug-tcg) debug_tcg="no"
  ;;

  --enable-sparse) sparse="yes"
  ;;
  --disable-sparse) sparse="no"
  ;;

  --disable-strip) strip_opt="no"
  ;;

  --disable-vnc-tls) vnc_tls="no"
  ;;

  --disable-vnc-sasl) vnc_sasl="no"
  ;;

  --disable-slirp) slirp="no"

  ;;

  --disable-vde) vde="no"

  ;;

  --disable-kqemu) kqemu="no"

  ;;

  --disable-xen) xen="no"
  ;;

  --disable-brlapi) brlapi="no"
  ;;

  --disable-bluez) bluez="no"
  ;;

  --disable-kvm) kvm="no"
  ;;

  --enable-profiler) profiler="yes"
  ;;

  --enable-cocoa)
      cocoa="yes" ;
      sdl="no" ;
      audio_drv_list="coreaudio `echo $audio_drv_list | sed s,coreaudio,,g`"

  ;;

  --disable-gfx-check) check_gfx="no"
  ;;

  --disable-system) softmmu="no"

  ;;

  --enable-system) softmmu="yes"

  ;;

  --disable-linux-user) linux_user="no"

  ;;

  --enable-linux-user) linux_user="yes"
  ;;
  --disable-darwin-user) darwin_user="no"
  ;;
  --enable-darwin-user) darwin_user="yes"

  ;;

  --disable-bsd-user) bsd_user="no"
  ;;
  --enable-bsd-user) bsd_user="yes"
  ;;

  --enable-uname-release=*) uname_release="$optarg"
  ;;

  --sparc_cpu=*)
      sparc_cpu="$optarg"
      case $sparc_cpu in
        v7|v8) SP_CFLAGS="-m32 -mcpu=${sparc_cpu} -D__sparc_${sparc_cpu}__"; SP_LDFLAGS="-m32"
                 target_cpu="sparc"; cpu="sparc" ;;
        v8plus|v8plusa) SP_CFLAGS="-m32 -mcpu=ultrasparc -D__sparc_${sparc_cpu}__"; SP_LDFLAGS="-m32"
                 target_cpu="sparc"; cpu="sparc" ;;
        v9)    SP_CFLAGS="-m64 -mcpu=ultrasparc -D__sparc_${sparc_cpu}__"; SP_LDFLAGS="-m64"
                 target_cpu="sparc64"; cpu="sparc64" ;;
        *)     echo "undefined SPARC architecture. Exiting";exit 1;;
      esac
  ;;

  --enable-werror) werror="yes"
  ;;
  --disable-werror) werror="no"
  ;;

  --disable-curses) curses="no"
  ;;

  --disable-nptl) nptl="no"
  ;;

  --enable-mixemu) mixemu="yes"
  ;;

  --disable-aio) aio="no"
  ;;

  --disable-blobs) blobs="no"
  ;;

  --kerneldir=*) kerneldir="$optarg"
  ;;

  --with-pkgversion=*) pkgversion=" ($optarg)"
  ;;

  *) echo "ERROR: unknown option $opt"; show_help="yes"
  ;;

  esac
done

# default flags for all hosts

CFLAGS="$CFLAGS -O2 -g -fno-strict-aliasing"

CFLAGS="$CFLAGS -Wall -Wundef -Wendif-labels -Wwrite-strings -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls"

LDFLAGS="$LDFLAGS -g"

if test "$werror" = "yes" ; then
CFLAGS="$CFLAGS -Werror"
fi

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

fi

#
# If cpu ~= sparc and  sparc_cpu hasn't been defined, plug in the right
# ARCH_CFLAGS/ARCH_LDFLAGS (assume sparc_v8plus for 32-bit and sparc_v9 for 64-bit)
#

case "$cpu" in

    sparc) if test -z "$sparc_cpu" ; then
               ARCH_CFLAGS="-m32 -mcpu=ultrasparc -D__sparc_v8plus__"
               ARCH_LDFLAGS="-m32"
           else
               ARCH_CFLAGS="${SP_CFLAGS}"
               ARCH_LDFLAGS="${SP_LDFLAGS}"
           fi

           ARCH_CFLAGS="$ARCH_CFLAGS -ffixed-g2 -ffixed-g3"
           if test "$solaris" = "no" ; then
               ARCH_CFLAGS="$ARCH_CFLAGS -ffixed-g1 -ffixed-g6"
           fi

           ;;
    sparc64) if test -z "$sparc_cpu" ; then
               ARCH_CFLAGS="-m64 -mcpu=ultrasparc -D__sparc_v9__"
               ARCH_LDFLAGS="-m64"
           else
               ARCH_CFLAGS="${SP_CFLAGS}"
               ARCH_LDFLAGS="${SP_LDFLAGS}"
           fi

           if test "$solaris" = "no" ; then
               ARCH_CFLAGS="$ARCH_CFLAGS -ffixed-g5 -ffixed-g6 -ffixed-g7"
           else
               ARCH_CFLAGS="$ARCH_CFLAGS -ffixed-g1 -ffixed-g5 -ffixed-g6 -ffixed-g7"
           fi

           ;;

    s390)
           ARCH_CFLAGS="-march=z900"
           ;;

    i386)
           ARCH_CFLAGS="-m32"
           ARCH_LDFLAGS="-m32"
           ;;
    x86_64)
           ARCH_CFLAGS="-m64"
           ARCH_LDFLAGS="-m64"
           ;;

esac

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

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

EOF
echo "Standard options:"
echo "  --help                   print this message"
echo "  --prefix=PREFIX          install in PREFIX [$prefix]"
echo "  --interp-prefix=PREFIX   where to find shared libraries, etc."
echo "                           use %M for cpu name [$interp_prefix]"
echo "  --target-list=LIST       set target list [$target_list]"
echo ""
echo "kqemu kernel acceleration support:"
echo "  --disable-kqemu          disable kqemu support"
echo ""
echo "Advanced options (experts only):"
echo "  --source-path=PATH       path of source code [$source_path]"
echo "  --cross-prefix=PREFIX    use PREFIX for compile tools [$cross_prefix]"
echo "  --cc=CC                  use C compiler CC [$cc]"
echo "  --host-cc=CC             use C compiler CC [$host_cc] for dyngen etc."

echo "  --extra-cflags=CFLAGS    add C compiler flags CFLAGS"
echo "  --extra-ldflags=LDFLAGS  add linker flags LDFLAGS"

echo "  --make=MAKE              use specified make [$make]"

echo "  --install=INSTALL        use specified install [$install]"

echo "  --static                 enable static build [$static]"

echo "  --enable-debug-tcg       enable TCG debugging"
echo "  --disable-debug-tcg      disable TCG debugging (default)"

echo "  --enable-sparse          enable sparse checker"
echo "  --disable-sparse         disable sparse checker (default)"

echo "  --disable-strip          disable stripping binaries"

echo "  --disable-werror         disable compilation abort on warning"

echo "  --disable-sdl            disable SDL"

echo "  --enable-cocoa           enable COCOA (Mac OS X only)"

echo "  --audio-drv-list=LIST    set audio drivers list:"
echo "                           Available drivers: $audio_possible_drivers"

echo "  --audio-card-list=LIST   set list of emulated audio cards [$audio_card_list]"
echo "                           Available cards: $audio_possible_cards"

echo "  --enable-mixemu          enable mixer emulation"

echo "  --disable-xen            disable xen backend driver support"

echo "  --disable-brlapi         disable BrlAPI"

echo "  --disable-vnc-tls        disable TLS encryption for VNC server"

echo "  --disable-vnc-sasl       disable SASL encryption for VNC server"

echo "  --disable-curses         disable curses output"

echo "  --disable-bluez          disable bluez stack connectivity"

echo "  --disable-kvm            disable KVM acceleration support"

echo "  --disable-nptl           disable usermode NPTL support"

echo "  --enable-system          enable all system emulation targets"
echo "  --disable-system         disable all system emulation targets"

echo "  --enable-linux-user      enable all linux usermode emulation targets"
echo "  --disable-linux-user     disable all linux usermode emulation targets"
echo "  --enable-darwin-user     enable all darwin usermode emulation targets"
echo "  --disable-darwin-user    disable all darwin usermode emulation targets"

echo "  --enable-bsd-user        enable all BSD usermode emulation targets"
echo "  --disable-bsd-user       disable all BSD usermode emulation targets"

echo "  --fmod-lib               path to FMOD library"
echo "  --fmod-inc               path to FMOD includes"

echo "  --oss-lib                path to OSS library"

echo "  --enable-uname-release=R Return R for uname -r in usermode emulation"

echo "  --sparc_cpu=V            Build qemu for Sparc architecture v7, v8, v8plus, v8plusa, v9"

echo "  --disable-vde            disable support for vde network"

echo "  --disable-aio            disable AIO support"

echo "  --disable-blobs          disable installing provided firmware blobs"

echo "  --kerneldir=PATH         look for kernel includes in PATH"

echo ""

echo "NOTE: The object files are built at the place where configure is launched"

exit 1
fi

if test "$mingw32" = "yes" ; then

    linux="no"

    EXESUF=".exe"

    oss="no"

    linux_user="no"

    bsd_user="no"

    OS_CFLAGS="$OS_CFLAGS -DWIN32_LEAN_AND_MEAN -DWINVER=0x501"

fi

if test ! -x "$(which cgcc 2>/dev/null)"; then
    sparse="no"
fi

#
# Solaris specific configure tool chain decisions
#
if test "$solaris" = "yes" ; then
  solinst=`which $install 2> /dev/null | /usr/bin/grep -v "no $install in"`
  if test -z "$solinst" ; then
    echo "Solaris install program not found. Use --install=/usr/ucb/install or"
    echo "install fileutils from www.blastwave.org using pkg-get -i fileutils"
    echo "to get ginstall which is used by default (which lives in /opt/csw/bin)"
    exit 1
  fi
  if test "$solinst" = "/usr/sbin/install" ; then
    echo "Error: Solaris /usr/sbin/install is not an appropriate install program."
    echo "try ginstall from the GNU fileutils available from www.blastwave.org"
    echo "using pkg-get -i fileutils, or use --install=/usr/ucb/install"
    exit 1
  fi
  sol_ar=`which ar 2> /dev/null | /usr/bin/grep -v "no ar in"`
  if test -z "$sol_ar" ; then
    echo "Error: No path includes ar"
    if test -f /usr/ccs/bin/ar ; then
      echo "Add /usr/ccs/bin to your path and rerun configure"
    fi
    exit 1
  fi

fi

if test -z "$target_list" ; then
# these targets are portable

    if [ "$softmmu" = "yes" ] ; then

        target_list="\
i386-softmmu \
x86_64-softmmu \
arm-softmmu \
cris-softmmu \
m68k-softmmu \
mips-softmmu \
mipsel-softmmu \
mips64-softmmu \
mips64el-softmmu \
ppc-softmmu \
ppcemb-softmmu \
ppc64-softmmu \
sh4-softmmu \
sh4eb-softmmu \
sparc-softmmu \
"

    fi

# the following are Linux specific

    if [ "$linux_user" = "yes" ] ; then

        target_list="${target_list}\
i386-linux-user \
x86_64-linux-user \
alpha-linux-user \
arm-linux-user \
armeb-linux-user \
cris-linux-user \
m68k-linux-user \
mips-linux-user \
mipsel-linux-user \
ppc-linux-user \
ppc64-linux-user \
ppc64abi32-linux-user \
sh4-linux-user \
sh4eb-linux-user \
sparc-linux-user \
sparc64-linux-user \
sparc32plus-linux-user \
"

    fi
# the following are Darwin specific
    if [ "$darwin_user" = "yes" ] ; then

        target_list="$target_list i386-darwin-user ppc-darwin-user "

    fi

# the following are BSD specific
    if [ "$bsd_user" = "yes" ] ; then
        target_list="${target_list}\

i386-bsd-user \
x86_64-bsd-user \
sparc-bsd-user \

sparc64-bsd-user \
"
    fi

else

    target_list=`echo "$target_list" | sed -e 's/,/ /g'`

fi

if test -z "$target_list" ; then
    echo "No targets enabled"
    exit 1
fi

if test -z "$cross_prefix" ; then

# ---
# big/little endian test
cat > $TMPC << EOF
#include <inttypes.h>
int main(int argc, char ** argv){

        volatile uint32_t i=0x01234567;
        return (*((uint8_t*)(&i))) == 0x67;

}
EOF

if $cc $ARCH_CFLAGS -o $TMPE $TMPC > /dev/null 2> /dev/null ; then

$TMPE && bigendian="yes"
else
echo big/little test failed
fi

else

# if cross compiling, cannot launch a program, so make a static guess

if test "$cpu" = "armv4b" \

     -o "$cpu" = "hppa" \

     -o "$cpu" = "m68k" \
     -o "$cpu" = "mips" \
     -o "$cpu" = "mips64" \

     -o "$cpu" = "ppc" \
     -o "$cpu" = "ppc64" \

     -o "$cpu" = "s390" \
     -o "$cpu" = "sparc" \
     -o "$cpu" = "sparc64"; then

    bigendian="yes"
fi

fi

# host long bits test
hostlongbits="32"

if test "$cpu" = "x86_64" \
     -o "$cpu" = "alpha" \
     -o "$cpu" = "ia64" \

     -o "$cpu" = "sparc64" \
     -o "$cpu" = "ppc64"; then

    hostlongbits="64"
fi

# Check host NPTL support
cat > $TMPC <<EOF
#include <sched.h>

#include <linux/futex.h>

void foo()
{
#if !defined(CLONE_SETTLS) || !defined(FUTEX_WAIT)
#error bork
#endif
}
EOF

if $cc $ARCH_CFLAGS -c -o $TMPO $TMPC > /dev/null 2> /dev/null ; then

  :
else
   nptl="no"
fi

##########################################

# zlib check

cat > $TMPC << EOF
#include <zlib.h>
int main(void) { zlibVersion(); return 0; }
EOF

if $cc $ARCH_CFLAGS -o $TMPE ${OS_CFLAGS} $TMPC -lz > /dev/null 2> /dev/null ; then

    :
else
    echo
    echo "Error: zlib check failed"
    echo "Make sure to have the zlib libs and headers installed."
    echo
    exit 1
fi

##########################################

# xen probe

if test "$xen" = "yes" ; then
cat > $TMPC <<EOF
#include <xenctrl.h>
#include <xs.h>
int main(void) { xs_daemon_open; xc_interface_open; }
EOF
   if $cc $ARCH_CFLAGS -c -o $TMPO $TMPC -lxenstore -lxenctrl 2> /dev/null ; then
      :
   else
      xen="no"
   fi
fi

##########################################

# SDL probe

sdl_too_old=no

if test -z "$sdl" ; then

    sdl_config="sdl-config"
    sdl=no
    sdl_static=no

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

    if $cc $ARCH_CFLAGS -o $TMPE ${OS_CFLAGS} `$sdl_config --cflags 2> /dev/null` $TMPC `$sdl_config --libs 2> /dev/null` > $TMPSDLLOG 2>&1 ; then

        _sdlversion=`$sdl_config --version | sed 's/[^0-9]//g'`
        if test "$_sdlversion" -lt 121 ; then
            sdl_too_old=yes
        else
            if test "$cocoa" = "no" ; then
                sdl=yes

            fi

        fi

        # static link with sdl ?
        if test "$sdl" = "yes" ; then
            aa="no"
            `$sdl_config --static-libs 2>/dev/null | grep \\\-laa > /dev/null` && aa="yes"
            sdl_static_libs=`$sdl_config --static-libs 2>/dev/null`
            if [ "$aa" = "yes" ] ; then
                sdl_static_libs="$sdl_static_libs `aalib-config --static-libs`"
            fi

            if $cc -o $TMPE ${OS_CFLAGS} `$sdl_config --cflags 2> /dev/null` $TMPC $sdl_static_libs > /dev/null 2> /dev/null; then

                sdl_static=yes
            fi
        fi # static link
    fi # sdl compile test

else

    # Make sure to disable cocoa if sdl was set
    if test "$sdl" = "yes" ; then
       cocoa="no"