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"
TMPE="${TMPDIR1}/${TMPB}.exe"
TMPTXT="${TMPDIR1}/${TMPB}.txt"

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.
    local 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 "$cc" "$@"
}

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

# 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="$QEMU_CXXFLAGS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS"
    CONFIGURE_CXXFLAGS=$(echo "$CONFIGURE_CFLAGS" | sed s/-std=gnu99/-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 $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -c -o $TMPO $TMPC
}

compile_prog() {
  local_cflags="$1"
  local_ldflags="$2"
  do_cc $CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC \
      $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=`echo $1 | 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
}

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

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

ld_has() {
    $ld --help 2>/dev/null | grep ".$1" >/dev/null 2>&1
}

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

# default parameters
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"
audio_win_int=""
libs_qga=""
debug_info="yes"
lto="false"
stack_protector=""
safe_stack=""
use_containers="yes"
gdb_bin=$(command -v "gdb-multiarch" || command -v "gdb")

if test -e "$source_path/.git"
then
    git_update=yes
    git_submodules="ui/keycodemapdb"
    git_submodules="$git_submodules tests/fp/berkeley-testfloat-3"
    git_submodules="$git_submodules tests/fp/berkeley-softfloat-3"
else
    git_update=no
    git_submodules=""

    if ! test -f "$source_path/ui/keycodemapdb/README"
    then
        echo
        echo "ERROR: missing file $source_path/ui/keycodemapdb/README"
        echo
        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."
        echo
        exit 1
    fi
fi
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

brlapi="auto"
curl="auto"
iconv="auto"
curses="auto"
docs="auto"
fdt="auto"
netmap="no"
sdl="auto"
sdl_image="auto"
virtiofsd="auto"
virtfs="auto"
libudev="auto"
mpath="auto"
vnc="enabled"
sparse="auto"
vde="$default_feature"
vnc_sasl="auto"
vnc_jpeg="auto"
vnc_png="auto"
xkbcommon="auto"
xen="$default_feature"
xen_ctrl_version="$default_feature"
xen_pci_passthrough="auto"
linux_aio="$default_feature"
linux_io_uring="$default_feature"
cap_ng="auto"
attr="auto"
xfs="$default_feature"
tcg="enabled"
membarrier="$default_feature"
vhost_net="$default_feature"
vhost_crypto="$default_feature"
vhost_scsi="$default_feature"
vhost_vsock="$default_feature"
vhost_user="no"
vhost_user_blk_server="auto"
vhost_user_fs="$default_feature"
kvm="auto"
hax="auto"
hvf="auto"
whpx="auto"
rdma="$default_feature"
pvrdma="$default_feature"
gprof="no"
debug_tcg="no"
debug="no"
sanitizers="no"
tsan="no"
fortify_source="$default_feature"
strip_opt="yes"
tcg_interpreter="no"
bigendian="no"
mingw32="no"
gcov="no"
EXESUF="$default_feature"
HOST_DSOSUF=".so"
modules="no"
module_upgrades="no"
prefix="/usr/local"
qemu_suffix="qemu"
slirp="auto"
oss_lib=""
bsd="no"
linux="no"
solaris="no"
profiler="no"
cocoa="auto"
softmmu="yes"
linux_user="no"
bsd_user="no"
blobs="true"
pkgversion=""
pie=""
qom_cast_debug="yes"
trace_backends="log"
trace_file="trace"
spice="$default_feature"
rbd="auto"
smartcard="$default_feature"
u2f="auto"
libusb="$default_feature"
usb_redir="$default_feature"
opengl="$default_feature"
opengl_dmabuf="no"
cpuid_h="no"
avx2_opt="$default_feature"
capstone="auto"
lzo="auto"
snappy="auto"
bzip2="auto"
lzfse="auto"
zstd="auto"
guest_agent="$default_feature"
guest_agent_with_vss="no"
guest_agent_ntddscsi="no"
guest_agent_msi="$default_feature"
vss_win32_sdk="$default_feature"
win_sdk="no"
want_tools="$default_feature"
libiscsi="auto"
libnfs="auto"
coroutine=""
coroutine_pool="$default_feature"
debug_stack_usage="no"
crypto_afalg="no"
cfi="false"
cfi_debug="false"
seccomp="auto"
glusterfs="auto"
gtk="auto"
tls_priority="NORMAL"
gnutls="$default_feature"
nettle="$default_feature"
nettle_xts="no"
gcrypt="$default_feature"
gcrypt_hmac="no"
gcrypt_xts="no"
qemu_private_xts="yes"
auth_pam="$default_feature"
vte="$default_feature"
virglrenderer="$default_feature"
tpm="$default_feature"
libssh="$default_feature"
live_block_migration=${default_feature:-yes}
numa="$default_feature"
tcmalloc="no"
jemalloc="no"
replication=${default_feature:-yes}
bochs=${default_feature:-yes}
cloop=${default_feature:-yes}
dmg=${default_feature:-yes}
qcow1=${default_feature:-yes}
vdi=${default_feature:-yes}
vvfat=${default_feature:-yes}
qed=${default_feature:-yes}
parallels=${default_feature:-yes}
sheepdog="no"
libxml2="$default_feature"
debug_mutex="no"
libpmem="$default_feature"
default_devices="true"
plugins="no"
fuzzing="no"
rng_none="no"
secret_keyring="$default_feature"
libdaxctl="$default_feature"
meson=""
ninja=""
skip_meson=no
gettext="auto"
fuse="auto"
fuse_lseek="auto"

malloc_trim="auto"

# parse CC options second
for opt do
  optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
  case "$opt" in
  --cross-prefix=*) cross_prefix="$optarg"
  ;;
  --cc=*) CC="$optarg"
  ;;
  --cxx=*) CXX="$optarg"
  ;;
  --cpu=*) cpu="$optarg"
  ;;
  --extra-cflags=*) QEMU_CFLAGS="$QEMU_CFLAGS $optarg"
                    QEMU_LDFLAGS="$QEMU_LDFLAGS $optarg"
  ;;
  --extra-cxxflags=*) QEMU_CXXFLAGS="$QEMU_CXXFLAGS $optarg"
  ;;
  --extra-ldflags=*) QEMU_LDFLAGS="$QEMU_LDFLAGS $optarg"
                     EXTRA_LDFLAGS="$optarg"
  ;;
  --enable-debug-info) debug_info="yes"
  ;;
  --disable-debug-info) debug_info="no"
  ;;
  --cross-cc-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-cc-FOO option"
  ;;
  --cross-cc-cflags-*) cc_arch=${opt#--cross-cc-flags-}; cc_arch=${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=${cc_arch%%=*}
                cc_archs="$cc_archs $cc_arch"
                eval "cross_cc_${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}"
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
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
# 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"
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"

# Flags that are needed during configure but later taken care of by Meson
CONFIGURE_CFLAGS="-std=gnu99 -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
}

write_c_fuzzer_skeleton() {
    cat > $TMPC <<EOF
#include <stdint.h>
#include <sys/types.h>
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { 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'
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

# 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
  HOST_DSOSUF=".dylib"
  ;;
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 "$cpu" ; then
  # command line argument
  :
elif check_define __i386__ ; then
  cpu="i386"
elif check_define __x86_64__ ; then
  if check_define __ILP32__ ; then
    cpu="x32"
  else
    cpu="x86_64"
  fi
elif check_define __sparc__ ; then
  if check_define __arch64__ ; then
    cpu="sparc64"
  else
    cpu="sparc"
  fi
elif check_define _ARCH_PPC ; then
  if check_define _ARCH_PPC64 ; then
    if check_define _LITTLE_ENDIAN ; then
      cpu="ppc64le"
    else
      cpu="ppc64"
    fi
  else
    cpu="ppc"
  fi
elif check_define __mips__ ; then
  cpu="mips"
elif check_define __s390__ ; then
  if check_define __s390x__ ; then
    cpu="s390x"
  else
    cpu="s390"
  fi
elif check_define __riscv ; then
  if check_define _LP64 ; then
    cpu="riscv64"
  else
    cpu="riscv32"
  fi
elif check_define __arm__ ; then
  cpu="arm"
elif check_define __aarch64__ ; then
  cpu="aarch64"
else
  cpu=$(uname -m)
fi

ARCH=
# Normalise host CPU name and set ARCH.
# Note that this case should only have supported host CPUs, not guests.
case "$cpu" in
  ppc|ppc64|s390x|sparc64|x32|riscv32|riscv64)
  ;;
  ppc64le)
    ARCH="ppc64"
  ;;
  i386|i486|i586|i686|i86pc|BePC)
    cpu="i386"
  ;;
  x86_64|amd64)
    cpu="x86_64"
  ;;
  armv*b|armv*l|arm)
    cpu="arm"
  ;;
  aarch64)
    cpu="aarch64"
  ;;
  mips*)
    cpu="mips"
  ;;
  sparc|sun4[cdmuv])
    cpu="sparc"
  ;;
  *)
    # This will result in either an error or falling back to TCI later
    ARCH=unknown
  ;;
esac
if test -z "$ARCH"; then
  ARCH="$cpu"
fi

# OS specific

case $targetos in
MINGW32*)
  mingw32="yes"
  audio_possible_drivers="dsound sdl"
  if check_include dsound.h; then
    audio_drv_list="dsound"
  else
    audio_drv_list=""
  fi
  supported_os="yes"
  pie="no"
;;
GNU/kFreeBSD)
  bsd="yes"
  audio_drv_list="oss try-sdl"
  audio_possible_drivers="oss sdl pa"
;;
FreeBSD)
  bsd="yes"
  make="${MAKE-gmake}"
  audio_drv_list="oss try-sdl"
  audio_possible_drivers="oss sdl pa"
  # needed for kinfo_getvmmap(3) in libutil.h
  netmap=""  # enable netmap autodetect
;;
DragonFly)
  bsd="yes"
  make="${MAKE-gmake}"
  audio_drv_list="oss try-sdl"
  audio_possible_drivers="oss sdl pa"
;;
NetBSD)
  bsd="yes"
  make="${MAKE-gmake}"
  audio_drv_list="oss try-sdl"
  audio_possible_drivers="oss sdl"
  oss_lib="-lossaudio"
;;
OpenBSD)
  bsd="yes"
  make="${MAKE-gmake}"
  audio_drv_list="try-sdl"
  audio_possible_drivers="sdl"
;;
Darwin)
  bsd="yes"
  darwin="yes"
  if [ "$cpu" = "x86_64" ] ; then
    QEMU_CFLAGS="-arch x86_64 $QEMU_CFLAGS"
    QEMU_LDFLAGS="-arch x86_64 $QEMU_LDFLAGS"
  fi
  audio_drv_list="coreaudio try-sdl"
  audio_possible_drivers="coreaudio sdl"
  QEMU_LDFLAGS="-framework CoreFoundation -framework IOKit $QEMU_LDFLAGS"
  # 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}"
  smbd="${SMBD-/usr/sfw/sbin/smbd}"
  if test -f /usr/include/sys/soundcard.h ; then
    audio_drv_list="oss try-sdl"
  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"
;;
Haiku)
  haiku="yes"
  QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -D_BSD_SOURCE $QEMU_CFLAGS"
;;
Linux)
  audio_drv_list="try-pa oss"
  audio_possible_drivers="oss alsa sdl pa"
  linux="yes"
  linux_user="yes"
  vhost_user=${default_feature:-yes}
;;
esac

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

: ${make=${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

: ${smbd=${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"
  HOST_DSOSUF=".dll"
  # MinGW needs -mthreads for TLS and macro _MT.
  CONFIGURE_CFLAGS="-mthreads $CONFIGURE_CFLAGS"
  write_c_skeleton;
  prefix="/qemu"
  qemu_suffix=""
  libs_qga="-lws2_32 -lwinmm -lpowrprof -lwtsapi32 -lwininet -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="$optarg"
  ;;
  --cross-prefix=*)
  ;;
  --cc=*)
  ;;
  --host-cc=*) host_cc="$optarg"
  ;;
  --cxx=*)
  ;;
  --iasl=*) iasl="$optarg"
  ;;
  --objcc=*) objcc="$optarg"
  ;;
  --make=*) make="$optarg"
  ;;
  --install=*)
  ;;
  --python=*) python="$optarg" ; explicit_python=yes
  ;;
  --sphinx-build=*) sphinx_build="$optarg"
  ;;
  --skip-meson) skip_meson=yes
  ;;
  --meson=*) meson="$optarg"
  ;;
  --ninja=*) ninja="$optarg"
  ;;
  --smbd=*) smbd="$optarg"
  ;;
  --extra-cflags=*)
  ;;
  --extra-cxxflags=*)
  ;;
  --extra-ldflags=*)
  ;;
  --enable-debug-info)
  ;;
  --disable-debug-info)
  ;;
  --cross-cc-*)
  ;;
  --enable-modules)
      modules="yes"
  ;;
  --disable-modules)
      modules="no"
  ;;
  --disable-module-upgrades) module_upgrades="no"
  ;;
  --enable-module-upgrades) module_upgrades="yes"
  ;;
  --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
  ;;
  --enable-trace-backends=*) trace_backends="$optarg"
  ;;
  # XXX: backwards compatibility
  --enable-trace-backend=*) trace_backends="$optarg"
  ;;
  --with-trace-file=*) trace_file="$optarg"
  ;;
  --with-default-devices) default_devices="true"
  ;;
  --without-default-devices) default_devices="false"
  ;;
  --without-default-features) # processed above
  ;;
  --enable-gprof) gprof="yes"
  ;;
  --enable-gcov) gcov="yes"
  ;;
  --static)
    static="yes"
    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="$optarg"
  ;;
  --with-suffix=*) qemu_suffix="$optarg"
  ;;
  --docdir=*) docdir="$optarg"
  ;;
  --localedir=*) localedir="$optarg"
  ;;
  --sysconfdir=*) sysconfdir="$optarg"
  ;;
  --localstatedir=*) local_statedir="$optarg"
  ;;
  --firmwarepath=*) firmwarepath="$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.
  ;;
  --disable-sdl) sdl="disabled"
  ;;
  --enable-sdl) sdl="enabled"
  ;;
  --disable-sdl-image) sdl_image="disabled"