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#!/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"

# default parameters
prefix="/usr/local"
interp_prefix="/usr/gnemul/qemu-%M"
static="no"
cross_prefix=""
cc="gcc"
host_cc="gcc"
ar="ar"
make="make"
strip="strip"
cpu=`uname -m`
target_list="i386-user i386 i386-softmmu arm-user sparc-user ppc-user"
case "$cpu" in
  i386|i486|i586|i686|i86pc|BePC)
    cpu="i386"
  ;;
  armv4l)
    cpu="armv4l"
  ;;
  alpha)
    cpu="alpha"
  ;;
  "Power Macintosh"|ppc|ppc64)
    cpu="powerpc"
  ;;
  mips)
    cpu="mips"
  ;;
  s390)
    cpu="s390"
  ;;
  sparc)
    cpu="sparc"
  ;;
  sparc64)
    cpu="sparc64"
  ;;
  ia64)
    cpu="ia64"
  ;;
  m68k)
    cpu="m68k"
  ;;
  *)
    cpu="unknown"
  ;;
esac
gprof="no"
bigendian="no"

# OS specific
targetos=`uname -s`
case $targetos in
*) ;;
esac

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

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_too_old=no
sdl=no
if $cc -o $TMPE `sdl-config --cflags` $TMPC `sdl-config --libs`  2> /dev/null  ; then
_sdlversion=`sdl-config --version | sed 's/[^0-9]//g'`
if test "$_sdlversion" -lt 121 ; then
sdl_too_old=yes
else
sdl=yes
fi
fi

# find source path
# XXX: we assume an absolute path is given when launching configure, 
# except in './configure' case.
source_path=${0%configure}
source_path=${source_path%/}
source_path_used="yes"
if test -z "$source_path" -o "$source_path" = "." ; then
    source_path=`pwd`
    source_path_used="no"
fi

for opt do
  case "$opt" in
  --prefix=*) prefix=`echo $opt | cut -d '=' -f 2`
  ;;
  --interp-prefix=*) interp_prefix=`echo $opt | cut -d '=' -f 2`
  ;;
  --source-path=*) source_path=`echo $opt | cut -d '=' -f 2`
  ;;
  --cross-prefix=*) cross_prefix=`echo $opt | cut -d '=' -f 2`
  ;;
  --cc=*) cc=`echo $opt | cut -d '=' -f 2`
  ;;
  --make=*) make=`echo $opt | cut -d '=' -f 2`
  ;;
  --extra-cflags=*) CFLAGS="${opt#--extra-cflags=}"
  ;;
  --extra-ldflags=*) LDFLAGS="${opt#--extra-ldflags=}"
  ;;
  --extra-libs=*) extralibs=${opt#--extra-libs=}
  ;;
  --cpu=*) cpu=`echo $opt | cut -d '=' -f 2`
  ;;
  --target-list=*) target_list=${opt#--target-list=}
  ;;
  --enable-gprof) gprof="yes"
  ;;
  --static) static="yes"
  ;;
  --disable-sdl) sdl="no"
  ;;
  esac
done

# Checking for CFLAGS
if test -z "$CFLAGS"; then
    CFLAGS="-O2"
fi

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

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 -o $TMPE $TMPC 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 "$cpu" = "powerpc" -o "$cpu" = "mips" -o "$cpu" = "s390" -o "$cpu" = "sparc" -o "$cpu" = "sparc64" -o "$cpu" = "m68k"; then
    bigendian="yes"
fi

fi

# check gcc options support
cat > $TMPC <<EOF
int main(void) {
}
EOF

have_gcc3_options="no"
if $cc -fno-reorder-blocks -fno-optimize-sibling-calls -o $TMPO $TMPC 2> /dev/null ; then
   have_gcc3_options="yes"
fi

if test x"$1" = x"-h" -o x"$1" = x"--help" ; 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 [$target_list]"
echo ""
echo "Advanced options (experts only):"
echo "  --source-path=PATH       path of source code [$source_path]"
echo "  --cross-prefix=PREFIX    use PREFIX for compile tools [$cross_prefix]"
echo "  --cc=CC                  use C compiler CC [$cc]"
echo "  --make=MAKE              use specified make [$make]"
echo "  --static                 enable static build [$static]"
echo ""
echo "NOTE: The object files are build at the place where configure is launched"
exit 1
fi

mandir="$prefix/share/man"
sharedir="$prefix/share/qemu"

echo "Install prefix    $prefix"
echo "Manual directory  $mandir"
echo "BIOS directory    $sharedir"
echo "ELF interp prefix $interp_prefix"
echo "Source path       $source_path"
echo "C compiler        $cc"
echo "make              $make"
echo "host CPU          $cpu"
echo "host big endian   $bigendian"
echo "target list       $target_list"
echo "gprof enabled     $gprof"
echo "static build      $static"
echo "SDL support       $sdl"
if test $sdl_too_old = "yes"; then
echo "-> Your SDL version is too old - please upgrade to have FFplay/SDL support"
fi

config_mak="config-host.mak"
config_h="config-host.h"

echo "Creating $config_mak and $config_h"

echo "# Automatically generated by configure - do not modify" > $config_mak
echo "/* Automatically generated by configure - do not modify */" > $config_h

echo "prefix=$prefix" >> $config_mak
echo "mandir=$mandir" >> $config_mak
echo "sharedir=$sharedir" >> $config_mak
echo "#define CONFIG_QEMU_SHAREDIR \"$sharedir\"" >> $config_h
echo "MAKE=$make" >> $config_mak
echo "CC=$cc" >> $config_mak
if test "$have_gcc3_options" = "yes" ; then
  echo "HAVE_GCC3_OPTIONS=yes" >> $config_mak
fi
echo "HOST_CC=$host_cc" >> $config_mak
echo "AR=$ar" >> $config_mak
echo "STRIP=$strip -s -R .comment -R .note" >> $config_mak
echo "CFLAGS=$CFLAGS" >> $config_mak
echo "LDFLAGS=$LDFLAGS" >> $config_mak
if test "$cpu" = "i386" ; then
  echo "ARCH=i386" >> $config_mak
  echo "#define HOST_I386 1" >> $config_h
elif test "$cpu" = "armv4l" ; then
  echo "ARCH=arm" >> $config_mak
  echo "#define HOST_ARM 1" >> $config_h
elif test "$cpu" = "powerpc" ; then
  echo "ARCH=ppc" >> $config_mak
  echo "#define HOST_PPC 1" >> $config_h
elif test "$cpu" = "mips" ; then
  echo "ARCH=mips" >> $config_mak
  echo "#define HOST_MIPS 1" >> $config_h
elif test "$cpu" = "s390" ; then
  echo "ARCH=s390" >> $config_mak
  echo "#define HOST_S390 1" >> $config_h
elif test "$cpu" = "alpha" ; then
  echo "ARCH=alpha" >> $config_mak
  echo "#define HOST_ALPHA 1" >> $config_h
elif test "$cpu" = "sparc" ; then
  echo "ARCH=sparc" >> $config_mak
  echo "#define HOST_SPARC 1" >> $config_h
elif test "$cpu" = "sparc64" ; then
  echo "ARCH=sparc64" >> $config_mak
  echo "#define HOST_SPARC64 1" >> $config_h
elif test "$cpu" = "ia64" ; then
  echo "ARCH=ia64" >> $config_mak
  echo "#define HOST_IA64 1" >> $config_h
elif test "$cpu" = "m68k" ; then
  echo "ARCH=m68k" >> config.mak
  echo "#define HOST_M68K 1" >> $TMPH
else
  echo "Unsupported CPU"
  exit 1
fi
if test "$bigendian" = "yes" ; then
  echo "WORDS_BIGENDIAN=yes" >> $config_mak
  echo "#define WORDS_BIGENDIAN 1" >> $config_h
fi
echo "#define HAVE_BYTESWAP_H 1" >> $config_h
if test "$gprof" = "yes" ; then
  echo "TARGET_GPROF=yes" >> $config_mak
  echo "#define HAVE_GPROF 1" >> $config_h
fi
if test "$static" = "yes" ; then
  echo "CONFIG_STATIC=yes" >> $config_mak
  echo "#define CONFIG_STATIC 1" >> $config_h
fi
if test "$sdl" = "yes" ; then
  echo "CONFIG_SDL=yes" >> $config_mak
  echo "#define CONFIG_SDL 1" >> $config_h
  echo "SDL_LIBS=`sdl-config --libs`" >> $config_mak
  echo "SDL_STATIC_LIBS=`sdl-config --static-libs`" >> $config_mak
  echo "SDL_CFLAGS=`sdl-config --cflags`" >> $config_mak
fi
echo -n "VERSION=" >>$config_mak
head $source_path/VERSION >>$config_mak
echo "" >>$config_mak
echo -n "#define QEMU_VERSION \"" >> $config_h
head $source_path/VERSION >> $config_h
echo "\"" >> $config_h

echo "SRC_PATH=$source_path" >> $config_mak
echo "TARGET_DIRS=$target_list" >> $config_mak

for target in $target_list; do 

target_dir="$target"
config_mak=$target_dir/config.mak
config_h=$target_dir/config.h
target_cpu=`echo $target | cut -d '-' -f 1`
target_bigendian="no"
[ "$target_cpu" = "sparc" ] && target_bigendian=yes
[ "$target_cpu" = "ppc" ] && target_bigendian=yes
target_softmmu="no"
if expr $target : '.*-softmmu' > /dev/null ; then
  target_softmmu="yes"
fi
target_user_only="no"
if expr $target : '.*-user' > /dev/null ; then
  target_user_only="yes"
fi

echo "Creating $config_mak, $config_h and $target_dir/Makefile"

mkdir -p $target_dir
ln -sf $source_path/Makefile.target $target_dir/Makefile

echo "# Automatically generated by configure - do not modify" > $config_mak
echo "/* Automatically generated by configure - do not modify */" > $config_h


echo "include ../config-host.mak" >> $config_mak
echo "#include \"../config-host.h\"" >> $config_h

interp_prefix1=`echo "$interp_prefix" | sed "s/%M/$target_cpu/g"`
echo "#define CONFIG_QEMU_PREFIX \"$interp_prefix1\"" >> $config_h

if test "$target_cpu" = "i386" ; then
  echo "TARGET_ARCH=i386" >> $config_mak
  echo "#define TARGET_ARCH \"i386\"" >> $config_h
  echo "#define TARGET_I386 1" >> $config_h
elif test "$target_cpu" = "arm" ; then
  echo "TARGET_ARCH=arm" >> $config_mak
  echo "#define TARGET_ARCH \"arm\"" >> $config_h
  echo "#define TARGET_ARM 1" >> $config_h
elif test "$target_cpu" = "sparc" ; then
  echo "TARGET_ARCH=sparc" >> $config_mak
  echo "#define TARGET_ARCH \"sparc\"" >> $config_h
  echo "#define TARGET_SPARC 1" >> $config_h
elif test "$target_cpu" = "ppc" ; then
  echo "TARGET_ARCH=ppc" >> $config_mak
  echo "#define TARGET_ARCH \"ppc\"" >> $config_h
  echo "#define TARGET_PPC 1" >> $config_h
else
  echo "Unsupported target CPU"
  exit 1
fi
if test "$target_bigendian" = "yes" ; then
  echo "TARGET_WORDS_BIGENDIAN=yes" >> $config_mak
  echo "#define TARGET_WORDS_BIGENDIAN 1" >> $config_h
fi
if test "$target_softmmu" = "yes" ; then
  echo "CONFIG_SOFTMMU=yes" >> $config_mak
  echo "#define CONFIG_SOFTMMU 1" >> $config_h
fi
if test "$target_user_only" = "yes" ; then
  echo "CONFIG_USER_ONLY=yes" >> $config_mak
  echo "#define CONFIG_USER_ONLY 1" >> $config_h
fi

done # for target in $targets

# build tree in object directory if source path is different from current one
if test "$source_path_used" = "yes" ; then
    DIRS="tests"
    FILES="Makefile tests/Makefile"
    for dir in $DIRS ; do
            mkdir -p $dir
    done
    for f in $FILES ; do
        ln -sf $source_path/$f $f
    done
fi

rm -f $TMPO $TMPC $TMPE $TMPS