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

# make source path absolute
source_path=$(cd "$(dirname -- "$0")"; pwd)

if test "$PWD" = "$source_path"
then
    echo "Using './build' as the directory for build output"

    MARKER=build/auto-created-by-configure

    if test -e build
    then
        if test -f $MARKER
        then
           rm -rf build
        else
            echo "ERROR: ./build dir already exists and was not previously created by configure"
            exit 1
        fi
    fi

    mkdir build
    touch $MARKER

    cat > GNUmakefile <<'EOF'
# This file is auto-generated by configure to support in-source tree
# 'make' command invocation

ifeq ($(MAKECMDGOALS),)
recurse: all
endif

.NOTPARALLEL: %
%: force
	@echo 'changing dir to build for $(MAKE) "$(MAKECMDGOALS)"...'
	@$(MAKE) -C build -f Makefile $(MAKECMDGOALS)
	@if test "$(MAKECMDGOALS)" = "distclean" && \
	    test -e build/auto-created-by-configure ; \
	then \
	    rm -rf build GNUmakefile ; \
	fi
force: ;
.PHONY: force
GNUmakefile: ;

EOF
    cd build
    exec $source_path/configure "$@"
fi

# 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"
TMPM="${TMPDIR1}/${TMPB}.m"
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

quote_sh() {
    printf "%s" "$1" | sed "s,','\\\\'',g; s,.*,'&',"
}

print_error() {
    (echo
    echo "ERROR: $1"
    while test -n "$2"; do
        echo "       $2"
        shift
    done
    echo) >&2
}

error_exit() {
    print_error "$@"
    exit 1
}

do_compiler() {
    # Run the compiler, capturing its output to the log. First argument
    # is compiler binary to execute.
    compiler="$1"
    shift
    if test -n "$BASH_VERSION"; then eval '
        echo >>config.log "
funcs: ${FUNCNAME[*]}
lines: ${BASH_LINENO[*]}"
    '; fi
    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" $CPU_CFLAGS "$@"
}

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

do_objc() {
    do_compiler "$objcc" $CPU_CFLAGS "$@"
}

# Append $2 to the variable named $1, with space separation
add_to() {
    eval $1=\${$1:+\"\$$1 \"}\$2
}

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="-D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS"
    CONFIGURE_CXXFLAGS=$(echo "$CONFIGURE_CFLAGS" | sed s/-std=gnu11/-std=gnu++11/)
    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 $CFLAGS $EXTRA_CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -c -o $TMPO $TMPC
}

compile_prog() {
  local_cflags="$1"
  local_ldflags="$2"
  do_cc $CFLAGS $EXTRA_CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC \
      $LDFLAGS $EXTRA_LDFLAGS $CONFIGURE_LDFLAGS $QEMU_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
}

version_ge () {
    local_ver1=$(expr "$1" : '\([0-9.]*\)' | tr . ' ')
    local_ver2=$(echo "$2" | tr . ' ')
    while true; do
        set x $local_ver1
        local_first=${2-0}
        # 'shift 2' if $2 is set, or 'shift' if $2 is not set
        shift ${2:+2}
        local_ver1=$*
        set x $local_ver2
        # the second argument finished, the first must be greater or equal
        test $# = 1 && return 0
        test $local_first -lt $2 && return 1
        test $local_first -gt $2 && return 0
        shift ${2:+2}
        local_ver2=$*
    done
}

glob() {
    eval test -z '"${1#'"$2"'}"'
}

if printf %s\\n "$source_path" "$PWD" | grep -q "[[:space:]:]";
then
  error_exit "main directory cannot contain spaces nor colons"
fi

# default parameters
cpu=""
static="no"
cross_compile="no"
cross_prefix=""
host_cc="cc"
stack_protector=""
safe_stack=""
use_containers="yes"
gdb_bin=$(command -v "gdb-multiarch" || command -v "gdb")

if test -e "$source_path/.git"
then
    git_submodules_action="update"
else
    git_submodules_action="ignore"
fi

git_submodules="ui/keycodemapdb"
git="git"

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

# 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.

default_feature=""
# parse CC options second
for opt do
  optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
  case "$opt" in
      --without-default-features)
          default_feature="no"
  ;;
  esac
done

EXTRA_CFLAGS=""
EXTRA_CXXFLAGS=""
EXTRA_OBJCFLAGS=""
EXTRA_LDFLAGS=""

debug_tcg="no"
sanitizers="no"
tsan="no"
fortify_source="yes"
EXESUF=""
modules="no"
prefix="/usr/local"
qemu_suffix="qemu"
softmmu="yes"
linux_user=""
bsd_user=""
pie=""
coroutine=""
plugins="$default_feature"
meson=""
meson_args=""
ninja=""
bindir="bin"
skip_meson=no

# The following Meson options are handled manually (still they
# are included in the automatically generated help message)

# 1. Track which submodules are needed
if test "$default_feature" = no ; then
  slirp="disabled"
else
  slirp="auto"
fi
fdt="auto"

# 2. Automatically enable/disable other options
tcg="enabled"
cfi="false"

# parse CC options second
for opt do
  optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
  case "$opt" in
  --cross-prefix=*) cross_prefix="$optarg"
                    cross_compile="yes"
  ;;
  --cc=*) CC="$optarg"
  ;;
  --cxx=*) CXX="$optarg"
  ;;
  --cpu=*) cpu="$optarg"
  ;;
  --extra-cflags=*)
    EXTRA_CFLAGS="$EXTRA_CFLAGS $optarg"
    EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
    EXTRA_OBJCFLAGS="$EXTRA_OBJCFLAGS $optarg"
    ;;
  --extra-cxxflags=*) EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
  ;;
  --extra-objcflags=*) EXTRA_OBJCFLAGS="$EXTRA_OBJCFLAGS $optarg"
  ;;
  --extra-ldflags=*) EXTRA_LDFLAGS="$EXTRA_LDFLAGS $optarg"
  ;;
  --cross-cc-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-cc-FOO option"
  ;;
  --cross-cc-cflags-*) cc_arch=${opt#--cross-cc-cflags-}; cc_arch=${cc_arch%%=*}
                      eval "cross_cc_cflags_${cc_arch}=\$optarg"
                      cross_cc_vars="$cross_cc_vars cross_cc_cflags_${cc_arch}"
  ;;
  --cross-cc-*) cc_arch=${opt#--cross-cc-}; cc_arch=${cc_arch%%=*}
                eval "cross_cc_${cc_arch}=\$optarg"
                cross_cc_vars="$cross_cc_vars cross_cc_${cc_arch}"
  ;;
  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}"
ccas="${CCAS-$cc}"
cpp="${CPP-$cc -E}"
objcopy="${OBJCOPY-${cross_prefix}objcopy}"
ld="${LD-${cross_prefix}ld}"
ranlib="${RANLIB-${cross_prefix}ranlib}"
nm="${NM-${cross_prefix}nm}"
smbd="$SMBD"
strip="${STRIP-${cross_prefix}strip}"
widl="${WIDL-${cross_prefix}widl}"
windres="${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
sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"

# default flags for all hosts
# We use -fwrapv to tell the compiler that we require a C dialect where
# left shift of signed integers is well defined and has the expected
# 2s-complement style results. (Both clang and gcc agree that it
# provides these semantics.)
QEMU_CFLAGS="-fno-strict-aliasing -fno-common -fwrapv"
QEMU_CFLAGS="-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_LDFLAGS=

# Flags that are needed during configure but later taken care of by Meson
CONFIGURE_CFLAGS="-std=gnu11 -Wall"
CONFIGURE_LDFLAGS=


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=windows
elif check_define __OpenBSD__ ; then
  targetos=openbsd
elif check_define __sun__ ; then
  targetos=sunos
elif check_define __HAIKU__ ; then
  targetos=haiku
elif check_define __FreeBSD__ ; then
  targetos=freebsd
elif check_define __FreeBSD_kernel__ && check_define __GLIBC__; then
  targetos=gnu/kfreebsd
elif check_define __DragonFly__ ; then
  targetos=dragonfly
elif check_define __NetBSD__; then
  targetos=netbsd
elif check_define __APPLE__; then
  targetos=darwin
else
  # This is a fatal error, but don't report it yet, because we
  # might be going to just print the --help text, or it might
  # be the result of a missing compiler.
  targetos=bogus
fi

# OS specific

mingw32="no"
bsd="no"
linux="no"
solaris="no"
case $targetos in
windows)
  mingw32="yes"
  plugins="no"
  pie="no"
;;
gnu/kfreebsd)
  bsd="yes"
;;
freebsd)
  bsd="yes"
  make="${MAKE-gmake}"
  # needed for kinfo_getvmmap(3) in libutil.h
;;
dragonfly)
  bsd="yes"
  make="${MAKE-gmake}"
;;
netbsd)
  bsd="yes"
  make="${MAKE-gmake}"
;;
openbsd)
  bsd="yes"
  make="${MAKE-gmake}"
;;
darwin)
  bsd="yes"
  darwin="yes"
  # 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 $QEMU_CFLAGS"
;;
sunos)
  solaris="yes"
  make="${MAKE-gmake}"
# 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"
  # $(uname -m) returns i86pc even on an x86_64 box, so default based on isainfo
  # Note that this check is broken for cross-compilation: if you're
  # cross-compiling to one of these OSes then you'll need to specify
  # the correct CPU with the --cpu option.
  if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then
    cpu="x86_64"
  fi
;;
haiku)
  pie="no"
  QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -D_BSD_SOURCE -fPIC $QEMU_CFLAGS"
;;
linux)
  linux="yes"
;;
esac

if test ! -z "$cpu" ; then
  # command line argument
  :
elif check_define __i386__ ; then
  cpu="i386"
elif check_define __x86_64__ ; then
  if check_define __ILP32__ ; then
    cpu="x32"
  else
    cpu="x86_64"
  fi
elif check_define __sparc__ ; then
  if check_define __arch64__ ; then
    cpu="sparc64"
  else
    cpu="sparc"
  fi
elif check_define _ARCH_PPC ; then
  if check_define _ARCH_PPC64 ; then
    if check_define _LITTLE_ENDIAN ; then
      cpu="ppc64le"
    else
      cpu="ppc64"
    fi
  else
    cpu="ppc"
  fi
elif check_define __mips__ ; then
  cpu="mips"
elif check_define __s390__ ; then
  if check_define __s390x__ ; then
    cpu="s390x"
  else
    cpu="s390"
  fi
elif check_define __riscv ; then
  cpu="riscv"
elif check_define __arm__ ; then
  cpu="arm"
elif check_define __aarch64__ ; then
  cpu="aarch64"
elif check_define __loongarch64 ; then
  cpu="loongarch64"
else
  cpu=$(uname -m)
fi

# Normalise host CPU name, set multilib cflags
# Note that this case should only have supported host CPUs, not guests.
case "$cpu" in
  armv*b|armv*l|arm)
    cpu="arm" ;;

  i386|i486|i586|i686|i86pc|BePC)
    cpu="i386"
    CPU_CFLAGS="-m32" ;;
  x32)
    cpu="x86_64"
    CPU_CFLAGS="-mx32" ;;
  x86_64|amd64)
    cpu="x86_64"
    # ??? Only extremely old AMD cpus do not have cmpxchg16b.
    # If we truly care, we should simply detect this case at
    # runtime and generate the fallback to serial emulation.
    CPU_CFLAGS="-m64 -mcx16" ;;

  mips*)
    cpu="mips" ;;

  ppc)
    CPU_CFLAGS="-m32" ;;
  ppc64)
    CPU_CFLAGS="-m64 -mbig-endian" ;;
  ppc64le)
    cpu="ppc64"
    CPU_CFLAGS="-m64 -mlittle-endian" ;;

  s390)
    CPU_CFLAGS="-m31" ;;
  s390x)
    CPU_CFLAGS="-m64" ;;

  sparc|sun4[cdmuv])
    cpu="sparc"
    CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc" ;;
  sparc64)
    CPU_CFLAGS="-m64 -mcpu=ultrasparc" ;;
esac

: ${make=${MAKE-make}}

# We prefer python 3.x. A bare 'python' is traditionally
# python 2.x, but some distros have it as python 3.x, so
# we check that too
python=
explicit_python=no
for binary in "${PYTHON-python3}" python
do
    if has "$binary"
    then
        python=$(command -v "$binary")
        break
    fi
done


# Check for ancillary tools used in testing
genisoimage=
for binary in genisoimage mkisofs
do
    if has $binary
    then
        genisoimage=$(command -v "$binary")
        break
    fi
done

# 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"
  # MinGW needs -mthreads for TLS and macro _MT.
  CONFIGURE_CFLAGS="-mthreads $CONFIGURE_CFLAGS"
  write_c_skeleton;
  prefix="/qemu"
  bindir=""
  qemu_suffix=""
fi

werror=""

. $source_path/scripts/meson-buildoptions.sh

meson_options=
meson_option_add() {
  meson_options="$meson_options $(quote_sh "$1")"
}
meson_option_parse() {
  meson_options="$meson_options $(_meson_option_parse "$@")"
  if test $? -eq 1; then
    echo "ERROR: unknown option $1"
    echo "Try '$0 --help' for more information"
    exit 1
  fi
}

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"
  ;;
  --cross-prefix=*)
  ;;
  --cc=*)
  ;;
  --host-cc=*) host_cc="$optarg"
  ;;
  --cxx=*)
  ;;
  --objcc=*) objcc="$optarg"
  ;;
  --make=*) make="$optarg"
  ;;
  --install=*)
  ;;
  --python=*) python="$optarg" ; explicit_python=yes
  ;;
  --skip-meson) skip_meson=yes
  ;;
  --meson=*) meson="$optarg"
  ;;
  --ninja=*) ninja="$optarg"
  ;;
  --smbd=*) smbd="$optarg"
  ;;
  --extra-cflags=*)
  ;;
  --extra-cxxflags=*)
  ;;
  --extra-objcflags=*)
  ;;
  --extra-ldflags=*)
  ;;
  --cross-cc-*)
  ;;
  --enable-debug-info) meson_option_add -Ddebug=true
  ;;
  --disable-debug-info) meson_option_add -Ddebug=false
  ;;
  --enable-modules)
      modules="yes"
  ;;
  --disable-modules)
      modules="no"
  ;;
  --cpu=*)
  ;;
  --target-list=*) target_list="$optarg"
                   if test "$target_list_exclude"; then
                       error_exit "Can't mix --target-list with --target-list-exclude"
                   fi
  ;;
  --target-list-exclude=*) target_list_exclude="$optarg"
                   if test "$target_list"; then
                       error_exit "Can't mix --target-list-exclude with --target-list"
                   fi
  ;;
  --with-default-devices) meson_option_add -Ddefault_devices=true
  ;;
  --without-default-devices) meson_option_add -Ddefault_devices=false
  ;;
  --with-devices-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --with-devices-FOO option"
  ;;
  --with-devices-*) device_arch=${opt#--with-devices-};
                    device_arch=${device_arch%%=*}
                    cf=$source_path/configs/devices/$device_arch-softmmu/$optarg.mak
                    if test -f "$cf"; then
                        device_archs="$device_archs $device_arch"
                        eval "devices_${device_arch}=\$optarg"
                    else
                        error_exit "File $cf does not exist"
                    fi
  ;;
  --without-default-features) # processed above
  ;;
  --static)
    static="yes"
    QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
  ;;
  --bindir=*) bindir="$optarg"
  ;;
  --with-suffix=*) qemu_suffix="$optarg"
  ;;
  --host=*|--build=*|\
  --disable-dependency-tracking|\
  --sbindir=*|--sharedstatedir=*|\
  --oldincludedir=*|--datarootdir=*|--infodir=*|\
  --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
    # These switches are silently ignored, for compatibility with
    # autoconf-generated configure scripts. This allows QEMU's
    # configure to be used by RPM and similar macros that set
    # lots of directory switches by default.
  ;;
  --enable-debug-tcg) debug_tcg="yes"
  ;;
  --disable-debug-tcg) debug_tcg="no"
  ;;
  --enable-debug)
      # Enable debugging options that aren't excessively noisy
      debug_tcg="yes"
      meson_option_parse --enable-debug-mutex ""
      meson_option_add -Doptimization=0
      fortify_source="no"
  ;;
  --enable-sanitizers) sanitizers="yes"
  ;;
  --disable-sanitizers) sanitizers="no"
  ;;
  --enable-tsan) tsan="yes"
  ;;
  --disable-tsan) tsan="no"
  ;;
  --disable-slirp) slirp="disabled"
  ;;
  --enable-slirp) slirp="enabled"
  ;;
  --enable-slirp=git) slirp="internal"
  ;;
  --enable-slirp=*) slirp="$optarg"
  ;;
  --disable-tcg) tcg="disabled"
                 plugins="no"
  ;;
  --enable-tcg) tcg="enabled"
  ;;
  --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"
  ;;
  --enable-safe-stack) safe_stack="yes"
  ;;
  --disable-safe-stack) safe_stack="no"
  ;;
  --enable-cfi)
      cfi="true";
      meson_option_add -Db_lto=true
  ;;
  --disable-cfi) cfi="false"
  ;;
  --disable-fdt) fdt="disabled"
  ;;
  --enable-fdt) fdt="enabled"
  ;;
  --enable-fdt=git) fdt="internal"
  ;;
  --enable-fdt=*) fdt="$optarg"
  ;;
  --with-coroutine=*) coroutine="$optarg"
  ;;
  --disable-zlib-test)
  ;;
  --disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
      echo "$0: $opt is obsolete, virtio-blk data-plane is always on" >&2
  ;;
  --enable-vhdx|--disable-vhdx)
      echo "$0: $opt is obsolete, VHDX driver is always built" >&2
  ;;
  --enable-uuid|--disable-uuid)
      echo "$0: $opt is obsolete, UUID support is always built" >&2
  ;;
  --with-git=*) git="$optarg"
  ;;
  --with-git-submodules=*)
      git_submodules_action="$optarg"
  ;;
  --enable-plugins) if test "$mingw32" = "yes"; then
                        error_exit "TCG plugins not currently supported on Windows platforms"
                    else
                        plugins="yes"
                    fi
  ;;
  --disable-plugins) plugins="no"
  ;;
  --enable-containers) use_containers="yes"
  ;;
  --disable-containers) use_containers="no"
  ;;
  --gdb=*) gdb_bin="$optarg"
  ;;
  # backwards compatibility options
  --enable-trace-backend=*) meson_option_parse "--enable-trace-backends=$optarg" "$optarg"
  ;;
  --disable-blobs) meson_option_parse --disable-install-blobs ""
  ;;
  --enable-tcmalloc) meson_option_parse --enable-malloc=tcmalloc tcmalloc
  ;;
  --enable-jemalloc) meson_option_parse --enable-malloc=jemalloc jemalloc
  ;;
  # everything else has the same name in configure and meson
  --*) meson_option_parse "$opt" "$optarg"
  ;;
  esac
done

# test for any invalid configuration combinations
if test "$plugins" = "yes" -a "$tcg" = "disabled"; then
    error_exit "Can't enable plugins on non-TCG builds"
fi

case $git_submodules_action in
    update|validate)
        if test ! -e "$source_path/.git"; then
            echo "ERROR: cannot $git_submodules_action git submodules without .git"
            exit 1
        fi
    ;;
    ignore)
        if ! test -f "$source_path/ui/keycodemapdb/README"
        then
            echo
            echo "ERROR: missing GIT submodules"
            echo
            if test -e "$source_path/.git"; then
                echo "--with-git-submodules=ignore specified but submodules were not"
                echo "checked out.  Please initialize and update submodules."
            else
                echo "This is not a GIT checkout but module content appears to"
                echo "be missing. Do not use 'git archive' or GitHub download links"
                echo "to acquire QEMU source archives. Non-GIT builds are only"
                echo "supported with source archives linked from:"
                echo
                echo "  https://www.qemu.org/download/#source"
                echo
                echo "Developers working with GIT can use scripts/archive-source.sh"
                echo "if they need to create valid source archives."
            fi
            echo
            exit 1
        fi
    ;;
    *)
        echo "ERROR: invalid --with-git-submodules= value '$git_submodules_action'"
        exit 1
    ;;
esac

if eval test -z "\${cross_cc_$cpu}"; then
    eval "cross_cc_${cpu}=\$cc"
    cross_cc_vars="$cross_cc_vars cross_cc_${cpu}"
fi

default_target_list=""
mak_wilds=""

if [ "$linux_user" != no ]; then
    if [ "$targetos" = linux ] && [ -d $source_path/linux-user/include/host/$cpu ]; then
        linux_user=yes
    elif [ "$linux_user" = yes ]; then
        error_exit "linux-user not supported on this architecture"
    fi
fi
if [ "$bsd_user" != no ]; then
    if [ "$bsd_user" = "" ]; then
        test $targetos = freebsd && bsd_user=yes
    fi
    if [ "$bsd_user" = yes ] && ! [ -d $source_path/bsd-user/$targetos ]; then
        error_exit "bsd-user not supported on this host OS"
    fi
fi
if [ "$softmmu" = "yes" ]; then
    mak_wilds="${mak_wilds} $source_path/configs/targets/*-softmmu.mak"
fi
if [ "$linux_user" = "yes" ]; then
    mak_wilds="${mak_wilds} $source_path/configs/targets/*-linux-user.mak"
fi
if [ "$bsd_user" = "yes" ]; then
    mak_wilds="${mak_wilds} $source_path/configs/targets/*-bsd-user.mak"
fi

for config in $mak_wilds; do
    target="$(basename "$config" .mak)"
    if echo "$target_list_exclude" | grep -vq "$target"; then
        default_target_list="${default_target_list} $target"
    fi
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]
  --target-list=LIST       set target list (default: build all)
$(echo Available targets: $default_target_list | \
  fold -s -w 53 | sed -e 's/^/                           /')
  --target-list-exclude=LIST exclude a set of targets from the default target-list

Advanced options (experts only):