configure

qemu性能直逼VMware的仿真器QEMU 的模擬速度約為實機的 25％；約為 Bochs 的 60 倍。Plex86、User-Mode-Linux、VMware 和 Virtual PC 則比

#!/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=""
interp_prefix="/usr/gnemul/qemu-%M"
static="no"
cross_prefix=""
cc="gcc"
gcc3_search="yes"
gcc3_list="gcc-3.4 gcc34 gcc-3.3 gcc33 gcc-3.2 gcc32"
host_cc="gcc"
ar="ar"
make="make"
install="install"
strip="strip"
cpu=`uname -m`
target_list=""
case "$cpu" in
  i386|i486|i586|i686|i86pc|BePC)
    cpu="i386"
  ;;
  armv*b)
    cpu="armv4b"
  ;;
  armv*l)
    cpu="armv4l"
  ;;
  alpha)
    cpu="alpha"
  ;;
  "Power Macintosh"|ppc|ppc64)
    cpu="powerpc"
  ;;
  mips)
    cpu="mips"
  ;;
  s390)
    cpu="s390"
  ;;
  sparc|sun4[muv])
    cpu="sparc"
  ;;
  sparc64)
    cpu="sparc64"
  ;;
  ia64)
    cpu="ia64"
  ;;
  m68k)
    cpu="m68k"
  ;;
  x86_64|amd64)
    cpu="x86_64"
  ;;
  *)
    cpu="unknown"
  ;;
esac
gprof="no"
bigendian="no"
mingw32="no"
EXESUF=""
gdbstub="yes"
slirp="yes"
adlib="no"
oss="no"
dsound="no"
coreaudio="no"
alsa="no"
fmod="no"
fmod_lib=""
fmod_inc=""
bsd="no"
linux="no"
kqemu="no"
profiler="no"
cocoa="no"
check_gfx="yes"
check_gcc="yes"
softmmu="yes"
linux_user="no"
darwin_user="no"
build_docs="no"
uname_release=""

# OS specific
targetos=`uname -s`
case $targetos in
CYGWIN*)
mingw32="yes"
OS_CFLAGS="-mno-cygwin"
;;
MINGW32*)
mingw32="yes"
;;
FreeBSD)
bsd="yes"
oss="yes"
if [ "$cpu" = "i386" -o "$cpu" = "x86_64" ] ; then
    kqemu="yes"
fi
;;
NetBSD)
bsd="yes"
oss="yes"
;;
OpenBSD)
bsd="yes"
oss="yes"
;;
Darwin)
bsd="yes"
darwin="yes"
darwin_user="yes"
cocoa="yes"
coreaudio="yes"
OS_CFLAGS="-mdynamic-no-pic"
;;
SunOS)
solaris="yes"
;;
*)
oss="yes"
linux="yes"
linux_user="yes"
if [ "$cpu" = "i386" -o "$cpu" = "x86_64" ] ; then
    kqemu="yes"
fi
;;
esac

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

if [ "$solaris" = "yes" ] ; then
    make="gmake"
    install="ginstall"
    solarisrev=`uname -r | cut -f2 -d.`
    if [ "$cpu" = "i386" -o "$cpu" = "x86_64" ] ; then
        if test "$solarisrev" -gt 10 ; then
            kqemu="yes"
        fi
    fi
fi

# find source path
source_path=`dirname "$0"`
if [ -z "$source_path" ]; then
    source_path=`pwd`
else
    source_path=`cd "$source_path"; pwd`
fi
if test "$source_path" = `pwd` ; then
    source_path_used="no"
else
    source_path_used="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=*) cross_prefix="$optarg"
  ;;
  --cc=*) cc="$optarg"
  gcc3_search="no"
  ;;
  --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="$optarg"
  ;;
  --enable-gprof) gprof="yes"
  ;;
  --static) static="yes"
  ;;
  --disable-sdl) sdl="no"
  ;;
  --enable-coreaudio) coreaudio="yes"
  ;;
  --enable-alsa) alsa="yes"
  ;;
  --enable-dsound) dsound="yes"
  ;;
  --enable-fmod) fmod="yes"
  ;;
  --fmod-lib=*) fmod_lib="$optarg"
  ;;
  --fmod-inc=*) fmod_inc="$optarg"
  ;;
  --enable-mingw32) mingw32="yes" ; cross_prefix="i386-mingw32-" ; user="no"
  ;;
  --disable-slirp) slirp="no"
  ;;
  --enable-adlib) adlib="yes"
  ;;
  --disable-kqemu) kqemu="no"
  ;;
  --enable-profiler) profiler="yes"
  ;;
  --enable-cocoa) cocoa="yes" ; coreaudio="yes" ; sdl="no"
  ;;
  --disable-gfx-check) check_gfx="no"
  ;;
  --disable-gcc-check) check_gcc="no"
  ;;
  --disable-system) softmmu="no"
  ;;
  --enable-system) softmmu="yes"
  ;;
  --disable-linux-user) linux_user="no"
  ;;
  --enable-linux-user) linux_user="yes"
  ;;
  --disable-darwin-user) darwin_user="no"
  ;;
  --enable-darwin-user) darwin_user="yes"
  ;;
  --enable-uname-release=*) uname_release="$optarg"
  ;;
  esac
done

# default flags for all hosts
CFLAGS="$CFLAGS -Wall -O2 -g -fno-strict-aliasing"
LDFLAGS="$LDFLAGS -g"

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 [$host_cc] for dyngen etc."
echo "  --make=MAKE              use specified make [$make]"
echo "  --install=INSTALL        use specified install [$install]"
echo "  --static                 enable static build [$static]"
echo "  --enable-cocoa           enable COCOA (Mac OS X only)"
echo "  --enable-mingw32         enable Win32 cross compilation with mingw32"
echo "  --enable-adlib           enable Adlib emulation"
echo "  --enable-coreaudio       enable Coreaudio audio driver"
echo "  --enable-alsa            enable ALSA audio driver"
echo "  --enable-fmod            enable FMOD audio driver"
echo "  --enabled-dsound         enable DirectSound audio driver"
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 "  --fmod-lib               path to FMOD library"
echo "  --fmod-inc               path to FMOD includes"
echo "  --enable-uname-release=R Return R for uname -r in usermode emulation"
echo ""
echo "NOTE: The object files are built at the place where configure is launched"
exit 1
fi

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

if test "$mingw32" = "yes" ; then
    linux="no"
    EXESUF=".exe"
    oss="no"
    if [ "$cpu" = "i386" ] ; then
        kqemu="yes"
    fi
fi

# Check for gcc4, error if pre-gcc4 
if test "$check_gcc" = "yes" ; then
    cat > $TMPC <<EOF
#if __GNUC__ < 4
#error gcc3
#endif
int main(){return 0;}
EOF
    check_cc() {
	which "$1" >&/dev/null
	return $?
    }

    if "$cc" -o $TMPE $TMPC 2>/dev/null ; then
	echo "WARNING: \"$cc\" looks like gcc 4.x"
	found_compat_cc="no"
	if test "$gcc3_search" = "yes" ; then
	    echo "Looking for gcc 3.x"
	    for compat_cc in $gcc3_list ; do
		if check_cc "$compat_cc" ; then
		    echo "Found \"$compat_cc\""
		    cc="$compat_cc"
		    found_compat_cc="yes"
		    break
		fi
	    done
	    if test "$found_compat_cc" = "no" ; then
		echo "gcc 3.x not found!"
	    fi
	fi
	if test "$found_compat_cc" = "no" ; then
	    echo "QEMU is known to have problems when compiled with gcc 4.x"
	    echo "It is recommended that you use gcc 3.x to build QEMU"
	    echo "To use this compiler anyway, configure with --disable-gcc-check"
	    exit 1;
	fi
    fi
fi

#
# Solaris specific configure tool chain decisions
#
if test "$solaris" = "yes" ; then
  #
  # gcc for solaris 10/fcs in /usr/sfw/bin doesn't compile qemu correctly
  # override the check with --disable-gcc-check
  # 
  if test "$solarisrev" -eq 10 -a "$check_gcc" = "yes" ; then
    solgcc=`which $cc`
    if test "$solgcc" = "/usr/sfw/bin/gcc" ; then
      echo "Solaris 10/FCS gcc in /usr/sfw/bin will not compiled qemu correctly."
      echo "please get gcc-3.4.3 or later, from www.blastwave.org using pkg-get -i gcc3"
      echo "or get the latest patch from SunSolve for gcc"
      exit 1
    fi
  fi
  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 ppc-softmmu sparc-softmmu x86_64-softmmu mips-softmmu mipsel-softmmu arm-softmmu"
    fi
# the following are Linux specific
    if [ "$linux_user" = "yes" ] ; then
        target_list="i386-linux-user arm-linux-user armeb-linux-user sparc-linux-user ppc-linux-user mips-linux-user mipsel-linux-user m68k-linux-user $target_list"
    fi
# the following are Darwin specific
    if [ "$darwin_user" = "yes" ] ; then
        target_list="i386-darwin-user ppc-darwin-user $target_list"
    fi
else
    target_list=`echo "$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 -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" -o "$cpu" = "armv4b"; then
    bigendian="yes"
fi

fi

# host long bits test
hostlongbits="32"
if test "$cpu" = "sparc64" -o "$cpu" = "ia64" -o "$cpu" = "x86_64" -o "$cpu" = "alpha"; then
    hostlongbits="64"
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

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

sdl_too_old=no

if test -z "$sdl" ; then

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

if test "$mingw32" = "yes" -a ! -z "$cross_prefix" ; then
# win32 cross compilation case
    sdl_config="i386-mingw32msvc-sdl-config"
    sdl=yes
else
# normal SDL probe
cat > $TMPC << EOF