configure

   1 #!/bin/sh
   2 #
   3 # qemu configure script (c) 2003 Fabrice Bellard
   4 #
   5
   6 # Unset some variables known to interfere with behavior of common tools,
   7 # just as autoconf does.
   8 CLICOLOR_FORCE= GREP_OPTIONS=
   9 unset CLICOLOR_FORCE GREP_OPTIONS
  10
  11 # Don't allow CCACHE, if present, to use cached results of compile tests!
  12 export CCACHE_RECACHE=yes
  13
  14 # make source path absolute
  15 source_path=$(cd "$(dirname -- "$0")"; pwd)
  16
  17 if test "$PWD" = "$source_path"
  18 then
  19     echo "Using './build' as the directory for build output"
  20
  21     MARKER=build/auto-created-by-configure
  22
  23     if test -e build
  24     then
  25         if test -f $MARKER
  26         then
  27            rm -rf build
  28         else
  29             echo "ERROR: ./build dir already exists and was not previously created by configure"
  30             exit 1
  31         fi
  32     fi
  33
  34     mkdir build
  35     touch $MARKER
  36
  37     cat > GNUmakefile <<'EOF'
  38 # This file is auto-generated by configure to support in-source tree
  39 # 'make' command invocation
  40
  41 ifeq ($(MAKECMDGOALS),)
  42 recurse: all
  43 endif
  44
  45 .NOTPARALLEL: %
  46 %: force
  47         @echo 'changing dir to build for $(MAKE) "$(MAKECMDGOALS)"...'
  48         @$(MAKE) -C build -f Makefile $(MAKECMDGOALS)
  49         @if test "$(MAKECMDGOALS)" = "distclean" && \
  50             test -e build/auto-created-by-configure ; \
  51         then \
  52             rm -rf build GNUmakefile ; \
  53         fi
  54 force: ;
  55 .PHONY: force
  56 GNUmakefile: ;
  57
  58 EOF
  59     cd build
  60     exec $source_path/configure "$@"
  61 fi
  62
  63 # Temporary directory used for files created while
  64 # configure runs. Since it is in the build directory
  65 # we can safely blow away any previous version of it
  66 # (and we need not jump through hoops to try to delete
  67 # it when configure exits.)
  68 TMPDIR1="config-temp"
  69 rm -rf "${TMPDIR1}"
  70 mkdir -p "${TMPDIR1}"
  71 if [ $? -ne 0 ]; then
  72     echo "ERROR: failed to create temporary directory"
  73     exit 1
  74 fi
  75
  76 TMPB="qemu-conf"
  77 TMPC="${TMPDIR1}/${TMPB}.c"
  78 TMPO="${TMPDIR1}/${TMPB}.o"
  79 TMPCXX="${TMPDIR1}/${TMPB}.cxx"
  80 TMPE="${TMPDIR1}/${TMPB}.exe"
  81 TMPTXT="${TMPDIR1}/${TMPB}.txt"
  82
  83 rm -f config.log
  84
  85 # Print a helpful header at the top of config.log
  86 echo "# QEMU configure log $(date)" >> config.log
  87 printf "# Configured with:" >> config.log
  88 printf " '%s'" "$0" "$@" >> config.log
  89 echo >> config.log
  90 echo "#" >> config.log
  91
  92 quote_sh() {
  93     printf "%s" "$1" | sed "s,','\\\\'',g; s,.*,'&',"
  94 }
  95
  96 print_error() {
  97     (echo
  98     echo "ERROR: $1"
  99     while test -n "$2"; do
 100         echo "       $2"
 101         shift
 102     done
 103     echo) >&2
 104 }
 105
 106 error_exit() {
 107     print_error "$@"
 108     exit 1
 109 }
 110
 111 do_compiler() {
 112     # Run the compiler, capturing its output to the log. First argument
 113     # is compiler binary to execute.
 114     compiler="$1"
 115     shift
 116     if test -n "$BASH_VERSION"; then eval '
 117         echo >>config.log "
 118 funcs: ${FUNCNAME[*]}
 119 lines: ${BASH_LINENO[*]}"
 120     '; fi
 121     echo $compiler "$@" >> config.log
 122     $compiler "$@" >> config.log 2>&1 || return $?
 123     # Test passed. If this is an --enable-werror build, rerun
 124     # the test with -Werror and bail out if it fails. This
 125     # makes warning-generating-errors in configure test code
 126     # obvious to developers.
 127     if test "$werror" != "yes"; then
 128         return 0
 129     fi
 130     # Don't bother rerunning the compile if we were already using -Werror
 131     case "$*" in
 132         *-Werror*)
 133            return 0
 134         ;;
 135     esac
 136     echo $compiler -Werror "$@" >> config.log
 137     $compiler -Werror "$@" >> config.log 2>&1 && return $?
 138     error_exit "configure test passed without -Werror but failed with -Werror." \
 139         "This is probably a bug in the configure script. The failing command" \
 140         "will be at the bottom of config.log." \
 141         "You can run configure with --disable-werror to bypass this check."
 142 }
 143
 144 do_cc() {
 145     do_compiler "$cc" $CPU_CFLAGS "$@"
 146 }
 147
 148 do_cxx() {
 149     do_compiler "$cxx" $CPU_CFLAGS "$@"
 150 }
 151
 152 # Append $2 to the variable named $1, with space separation
 153 add_to() {
 154     eval $1=\${$1:+\"\$$1 \"}\$2
 155 }
 156
 157 update_cxxflags() {
 158     # Set QEMU_CXXFLAGS from QEMU_CFLAGS by filtering out those
 159     # options which some versions of GCC's C++ compiler complain about
 160     # because they only make sense for C programs.
 161     QEMU_CXXFLAGS="$QEMU_CXXFLAGS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS"
 162     CONFIGURE_CXXFLAGS=$(echo "$CONFIGURE_CFLAGS" | sed s/-std=gnu11/-std=gnu++11/)
 163     for arg in $QEMU_CFLAGS; do
 164         case $arg in
 165             -Wstrict-prototypes|-Wmissing-prototypes|-Wnested-externs|\
 166             -Wold-style-declaration|-Wold-style-definition|-Wredundant-decls)
 167                 ;;
 168             *)
 169                 QEMU_CXXFLAGS=${QEMU_CXXFLAGS:+$QEMU_CXXFLAGS }$arg
 170                 ;;
 171         esac
 172     done
 173 }
 174
 175 compile_object() {
 176   local_cflags="$1"
 177   do_cc $CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -c -o $TMPO $TMPC
 178 }
 179
 180 compile_prog() {
 181   local_cflags="$1"
 182   local_ldflags="$2"
 183   do_cc $CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC \
 184       $LDFLAGS $CONFIGURE_LDFLAGS $QEMU_LDFLAGS $local_ldflags
 185 }
 186
 187 # symbolically link $1 to $2.  Portable version of "ln -sf".
 188 symlink() {
 189   rm -rf "$2"
 190   mkdir -p "$(dirname "$2")"
 191   ln -s "$1" "$2"
 192 }
 193
 194 # check whether a command is available to this shell (may be either an
 195 # executable or a builtin)
 196 has() {
 197     type "$1" >/dev/null 2>&1
 198 }
 199
 200 version_ge () {
 201     local_ver1=$(expr "$1" : '\([0-9.]*\)' | tr . ' ')
 202     local_ver2=$(echo "$2" | tr . ' ')
 203     while true; do
 204         set x $local_ver1
 205         local_first=${2-0}
 206         # 'shift 2' if $2 is set, or 'shift' if $2 is not set
 207         shift ${2:+2}
 208         local_ver1=$*
 209         set x $local_ver2
 210         # the second argument finished, the first must be greater or equal
 211         test $# = 1 && return 0
 212         test $local_first -lt $2 && return 1
 213         test $local_first -gt $2 && return 0
 214         shift ${2:+2}
 215         local_ver2=$*
 216     done
 217 }
 218
 219 glob() {
 220     eval test -z '"${1#'"$2"'}"'
 221 }
 222
 223 ld_has() {
 224     $ld --help 2>/dev/null | grep ".$1" >/dev/null 2>&1
 225 }
 226
 227 if printf %s\\n "$source_path" "$PWD" | grep -q "[[:space:]:]";
 228 then
 229   error_exit "main directory cannot contain spaces nor colons"
 230 fi
 231
 232 # default parameters
 233 cpu=""
 234 iasl="iasl"
 235 interp_prefix="/usr/gnemul/qemu-%M"
 236 static="no"
 237 cross_compile="no"
 238 cross_prefix=""
 239 audio_drv_list="default"
 240 block_drv_rw_whitelist=""
 241 block_drv_ro_whitelist=""
 242 block_drv_whitelist_tools="no"
 243 host_cc="cc"
 244 libs_qga=""
 245 debug_info="yes"
 246 lto="false"
 247 stack_protector=""
 248 safe_stack=""
 249 use_containers="yes"
 250 gdb_bin=$(command -v "gdb-multiarch" || command -v "gdb")
 251
 252 if test -e "$source_path/.git"
 253 then
 254     git_submodules_action="update"
 255 else
 256     git_submodules_action="ignore"
 257 fi
 258
 259 git_submodules="ui/keycodemapdb"
 260 git="git"
 261
 262 # Don't accept a target_list environment variable.
 263 unset target_list
 264 unset target_list_exclude
 265
 266 # Default value for a variable defining feature "foo".
 267 #  * foo="no"  feature will only be used if --enable-foo arg is given
 268 #  * foo=""    feature will be searched for, and if found, will be used
 269 #              unless --disable-foo is given
 270 #  * foo="yes" this value will only be set by --enable-foo flag.
 271 #              feature will searched for,
 272 #              if not found, configure exits with error
 273 #
 274 # Always add --enable-foo and --disable-foo command line args.
 275 # Distributions want to ensure that several features are compiled in, and it
 276 # is impossible without a --enable-foo that exits if a feature is not found.
 277
 278 default_feature=""
 279 # parse CC options second
 280 for opt do
 281   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 282   case "$opt" in
 283       --without-default-features)
 284           default_feature="no"
 285   ;;
 286   esac
 287 done
 288
 289 xen_ctrl_version="$default_feature"
 290 xfs="$default_feature"
 291 membarrier="$default_feature"
 292 vhost_kernel="$default_feature"
 293 vhost_net="$default_feature"
 294 vhost_crypto="$default_feature"
 295 vhost_scsi="$default_feature"
 296 vhost_vsock="$default_feature"
 297 vhost_user="no"
 298 vhost_user_fs="$default_feature"
 299 vhost_vdpa="$default_feature"
 300 rdma="$default_feature"
 301 pvrdma="$default_feature"
 302 gprof="no"
 303 debug_tcg="no"
 304 debug="no"
 305 sanitizers="no"
 306 tsan="no"
 307 fortify_source="$default_feature"
 308 strip_opt="yes"
 309 mingw32="no"
 310 gcov="no"
 311 EXESUF=""
 312 modules="no"
 313 module_upgrades="no"
 314 prefix="/usr/local"
 315 qemu_suffix="qemu"
 316 bsd="no"
 317 linux="no"
 318 solaris="no"
 319 profiler="no"
 320 softmmu="yes"
 321 linux_user="no"
 322 bsd_user="no"
 323 pkgversion=""
 324 pie=""
 325 qom_cast_debug="yes"
 326 trace_backends="log"
 327 trace_file="trace"
 328 opengl="$default_feature"
 329 cpuid_h="no"
 330 avx2_opt="$default_feature"
 331 guest_agent="$default_feature"
 332 guest_agent_with_vss="no"
 333 guest_agent_ntddscsi="no"
 334 vss_win32_sdk="$default_feature"
 335 win_sdk="no"
 336 want_tools="$default_feature"
 337 coroutine=""
 338 coroutine_pool="$default_feature"
 339 debug_stack_usage="no"
 340 crypto_afalg="no"
 341 tls_priority="NORMAL"
 342 tpm="$default_feature"
 343 libssh="$default_feature"
 344 live_block_migration=${default_feature:-yes}
 345 numa="$default_feature"
 346 replication=${default_feature:-yes}
 347 bochs=${default_feature:-yes}
 348 cloop=${default_feature:-yes}
 349 dmg=${default_feature:-yes}
 350 qcow1=${default_feature:-yes}
 351 vdi=${default_feature:-yes}
 352 vvfat=${default_feature:-yes}
 353 qed=${default_feature:-yes}
 354 parallels=${default_feature:-yes}
 355 debug_mutex="no"
 356 plugins="$default_feature"
 357 rng_none="no"
 358 secret_keyring="$default_feature"
 359 meson=""
 360 meson_args=""
 361 ninja=""
 362 gio="$default_feature"
 363 skip_meson=no
 364 slirp_smbd="$default_feature"
 365
 366 # The following Meson options are handled manually (still they
 367 # are included in the automatically generated help message)
 368
 369 # 1. Track which submodules are needed
 370 capstone="auto"
 371 fdt="auto"
 372 slirp="auto"
 373
 374 # 2. Support --with/--without option
 375 default_devices="true"
 376
 377 # 3. Automatically enable/disable other options
 378 tcg="enabled"
 379 cfi="false"
 380
 381 # 4. Detection partly done in configure
 382 xen=${default_feature:+disabled}
 383
 384 # parse CC options second
 385 for opt do
 386   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 387   case "$opt" in
 388   --cross-prefix=*) cross_prefix="$optarg"
 389                     cross_compile="yes"
 390   ;;
 391   --cc=*) CC="$optarg"
 392   ;;
 393   --cxx=*) CXX="$optarg"
 394   ;;
 395   --cpu=*) cpu="$optarg"
 396   ;;
 397   --extra-cflags=*) QEMU_CFLAGS="$QEMU_CFLAGS $optarg"
 398                     QEMU_LDFLAGS="$QEMU_LDFLAGS $optarg"
 399   ;;
 400   --extra-cxxflags=*) QEMU_CXXFLAGS="$QEMU_CXXFLAGS $optarg"
 401   ;;
 402   --extra-ldflags=*) QEMU_LDFLAGS="$QEMU_LDFLAGS $optarg"
 403                      EXTRA_LDFLAGS="$optarg"
 404   ;;
 405   --enable-debug-info) debug_info="yes"
 406   ;;
 407   --disable-debug-info) debug_info="no"
 408   ;;
 409   --cross-cc-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-cc-FOO option"
 410   ;;
 411   --cross-cc-cflags-*) cc_arch=${opt#--cross-cc-flags-}; cc_arch=${cc_arch%%=*}
 412                       eval "cross_cc_cflags_${cc_arch}=\$optarg"
 413                       cross_cc_vars="$cross_cc_vars cross_cc_cflags_${cc_arch}"
 414   ;;
 415   --cross-cc-*) cc_arch=${opt#--cross-cc-}; cc_arch=${cc_arch%%=*}
 416                 cc_archs="$cc_archs $cc_arch"
 417                 eval "cross_cc_${cc_arch}=\$optarg"
 418                 cross_cc_vars="$cross_cc_vars cross_cc_${cc_arch}"
 419   ;;
 420   esac
 421 done
 422 # OS specific
 423 # Using uname is really, really broken.  Once we have the right set of checks
 424 # we can eliminate its usage altogether.
 425
 426 # Preferred compiler:
 427 #  ${CC} (if set)
 428 #  ${cross_prefix}gcc (if cross-prefix specified)
 429 #  system compiler
 430 if test -z "${CC}${cross_prefix}"; then
 431   cc="$host_cc"
 432 else
 433   cc="${CC-${cross_prefix}gcc}"
 434 fi
 435
 436 if test -z "${CXX}${cross_prefix}"; then
 437   cxx="c++"
 438 else
 439   cxx="${CXX-${cross_prefix}g++}"
 440 fi
 441
 442 ar="${AR-${cross_prefix}ar}"
 443 as="${AS-${cross_prefix}as}"
 444 ccas="${CCAS-$cc}"
 445 cpp="${CPP-$cc -E}"
 446 objcopy="${OBJCOPY-${cross_prefix}objcopy}"
 447 ld="${LD-${cross_prefix}ld}"
 448 ranlib="${RANLIB-${cross_prefix}ranlib}"
 449 nm="${NM-${cross_prefix}nm}"
 450 strip="${STRIP-${cross_prefix}strip}"
 451 windres="${WINDRES-${cross_prefix}windres}"
 452 pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
 453 query_pkg_config() {
 454     "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
 455 }
 456 pkg_config=query_pkg_config
 457 sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"
 458
 459 # default flags for all hosts
 460 # We use -fwrapv to tell the compiler that we require a C dialect where
 461 # left shift of signed integers is well defined and has the expected
 462 # 2s-complement style results. (Both clang and gcc agree that it
 463 # provides these semantics.)
 464 QEMU_CFLAGS="-fno-strict-aliasing -fno-common -fwrapv $QEMU_CFLAGS"
 465 QEMU_CFLAGS="-Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
 466 QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
 467 QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
 468
 469 # Flags that are needed during configure but later taken care of by Meson
 470 CONFIGURE_CFLAGS="-std=gnu11 -Wall"
 471 CONFIGURE_LDFLAGS=
 472
 473
 474 check_define() {
 475 cat > $TMPC <<EOF
 476 #if !defined($1)
 477 #error $1 not defined
 478 #endif
 479 int main(void) { return 0; }
 480 EOF
 481   compile_object
 482 }
 483
 484 check_include() {
 485 cat > $TMPC <<EOF
 486 #include <$1>
 487 int main(void) { return 0; }
 488 EOF
 489   compile_object
 490 }
 491
 492 write_c_skeleton() {
 493     cat > $TMPC <<EOF
 494 int main(void) { return 0; }
 495 EOF
 496 }
 497
 498 if check_define __linux__ ; then
 499   targetos="Linux"
 500 elif check_define _WIN32 ; then
 501   targetos='MINGW32'
 502 elif check_define __OpenBSD__ ; then
 503   targetos='OpenBSD'
 504 elif check_define __sun__ ; then
 505   targetos='SunOS'
 506 elif check_define __HAIKU__ ; then
 507   targetos='Haiku'
 508 elif check_define __FreeBSD__ ; then
 509   targetos='FreeBSD'
 510 elif check_define __FreeBSD_kernel__ && check_define __GLIBC__; then
 511   targetos='GNU/kFreeBSD'
 512 elif check_define __DragonFly__ ; then
 513   targetos='DragonFly'
 514 elif check_define __NetBSD__; then
 515   targetos='NetBSD'
 516 elif check_define __APPLE__; then
 517   targetos='Darwin'
 518 else
 519   # This is a fatal error, but don't report it yet, because we
 520   # might be going to just print the --help text, or it might
 521   # be the result of a missing compiler.
 522   targetos='bogus'
 523 fi
 524
 525 # Some host OSes need non-standard checks for which CPU to use.
 526 # Note that these checks are broken for cross-compilation: if you're
 527 # cross-compiling to one of these OSes then you'll need to specify
 528 # the correct CPU with the --cpu option.
 529 case $targetos in
 530 SunOS)
 531   # $(uname -m) returns i86pc even on an x86_64 box, so default based on isainfo
 532   if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then
 533     cpu="x86_64"
 534   fi
 535 esac
 536
 537 if test ! -z "$cpu" ; then
 538   # command line argument
 539   :
 540 elif check_define __i386__ ; then
 541   cpu="i386"
 542 elif check_define __x86_64__ ; then
 543   if check_define __ILP32__ ; then
 544     cpu="x32"
 545   else
 546     cpu="x86_64"
 547   fi
 548 elif check_define __sparc__ ; then
 549   if check_define __arch64__ ; then
 550     cpu="sparc64"
 551   else
 552     cpu="sparc"
 553   fi
 554 elif check_define _ARCH_PPC ; then
 555   if check_define _ARCH_PPC64 ; then
 556     if check_define _LITTLE_ENDIAN ; then
 557       cpu="ppc64le"
 558     else
 559       cpu="ppc64"
 560     fi
 561   else
 562     cpu="ppc"
 563   fi
 564 elif check_define __mips__ ; then
 565   cpu="mips"
 566 elif check_define __s390__ ; then
 567   if check_define __s390x__ ; then
 568     cpu="s390x"
 569   else
 570     cpu="s390"
 571   fi
 572 elif check_define __riscv ; then
 573   if check_define _LP64 ; then
 574     cpu="riscv64"
 575   else
 576     cpu="riscv32"
 577   fi
 578 elif check_define __arm__ ; then
 579   cpu="arm"
 580 elif check_define __aarch64__ ; then
 581   cpu="aarch64"
 582 else
 583   cpu=$(uname -m)
 584 fi
 585
 586 ARCH=
 587 # Normalise host CPU name and set ARCH.
 588 # Note that this case should only have supported host CPUs, not guests.
 589 case "$cpu" in
 590   ppc|ppc64|s390x|sparc64|x32|riscv32|riscv64)
 591   ;;
 592   ppc64le)
 593     ARCH="ppc64"
 594   ;;
 595   i386|i486|i586|i686|i86pc|BePC)
 596     cpu="i386"
 597   ;;
 598   x86_64|amd64)
 599     cpu="x86_64"
 600   ;;
 601   armv*b|armv*l|arm)
 602     cpu="arm"
 603   ;;
 604   aarch64)
 605     cpu="aarch64"
 606   ;;
 607   mips*)
 608     cpu="mips"
 609   ;;
 610   sparc|sun4[cdmuv])
 611     cpu="sparc"
 612   ;;
 613   *)
 614     # This will result in either an error or falling back to TCI later
 615     ARCH=unknown
 616   ;;
 617 esac
 618 if test -z "$ARCH"; then
 619   ARCH="$cpu"
 620 fi
 621
 622 # OS specific
 623
 624 case $targetos in
 625 MINGW32*)
 626   mingw32="yes"
 627   supported_os="yes"
 628   plugins="no"
 629   pie="no"
 630 ;;
 631 GNU/kFreeBSD)
 632   bsd="yes"
 633 ;;
 634 FreeBSD)
 635   bsd="yes"
 636   bsd_user="yes"
 637   make="${MAKE-gmake}"
 638   # needed for kinfo_getvmmap(3) in libutil.h
 639 ;;
 640 DragonFly)
 641   bsd="yes"
 642   make="${MAKE-gmake}"
 643 ;;
 644 NetBSD)
 645   bsd="yes"
 646   make="${MAKE-gmake}"
 647 ;;
 648 OpenBSD)
 649   bsd="yes"
 650   make="${MAKE-gmake}"
 651 ;;
 652 Darwin)
 653   bsd="yes"
 654   darwin="yes"
 655   # Disable attempts to use ObjectiveC features in os/object.h since they
 656   # won't work when we're compiling with gcc as a C compiler.
 657   QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
 658 ;;
 659 SunOS)
 660   solaris="yes"
 661   make="${MAKE-gmake}"
 662   smbd="${SMBD-/usr/sfw/sbin/smbd}"
 663 # needed for CMSG_ macros in sys/socket.h
 664   QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
 665 # needed for TIOCWIN* defines in termios.h
 666   QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
 667 ;;
 668 Haiku)
 669   haiku="yes"
 670   pie="no"
 671   QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -D_BSD_SOURCE -fPIC $QEMU_CFLAGS"
 672 ;;
 673 Linux)
 674   linux="yes"
 675   linux_user="yes"
 676   vhost_user=${default_feature:-yes}
 677 ;;
 678 esac
 679
 680 : ${make=${MAKE-make}}
 681
 682 # We prefer python 3.x. A bare 'python' is traditionally
 683 # python 2.x, but some distros have it as python 3.x, so
 684 # we check that too
 685 python=
 686 explicit_python=no
 687 for binary in "${PYTHON-python3}" python
 688 do
 689     if has "$binary"
 690     then
 691         python=$(command -v "$binary")
 692         break
 693     fi
 694 done
 695
 696
 697 # Check for ancillary tools used in testing
 698 genisoimage=
 699 for binary in genisoimage mkisofs
 700 do
 701     if has $binary
 702     then
 703         genisoimage=$(command -v "$binary")
 704         break
 705     fi
 706 done
 707
 708 # Default objcc to clang if available, otherwise use CC
 709 if has clang; then
 710   objcc=clang
 711 else
 712   objcc="$cc"
 713 fi
 714
 715 if test "$mingw32" = "yes" ; then
 716   EXESUF=".exe"
 717   # MinGW needs -mthreads for TLS and macro _MT.
 718   CONFIGURE_CFLAGS="-mthreads $CONFIGURE_CFLAGS"
 719   write_c_skeleton;
 720   prefix="/qemu"
 721   qemu_suffix=""
 722   libs_qga="-lws2_32 -lwinmm -lpowrprof -lwtsapi32 -lwininet -liphlpapi -lnetapi32 $libs_qga"
 723 fi
 724
 725 werror=""
 726
 727 . $source_path/scripts/meson-buildoptions.sh
 728
 729 meson_options=
 730 meson_option_parse() {
 731   meson_options="$meson_options $(_meson_option_parse "$@")"
 732   if test $? -eq 1; then
 733     echo "ERROR: unknown option $1"
 734     echo "Try '$0 --help' for more information"
 735     exit 1
 736   fi
 737 }
 738
 739 for opt do
 740   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 741   case "$opt" in
 742   --help|-h) show_help=yes
 743   ;;
 744   --version|-V) exec cat $source_path/VERSION
 745   ;;
 746   --prefix=*) prefix="$optarg"
 747   ;;
 748   --interp-prefix=*) interp_prefix="$optarg"
 749   ;;
 750   --cross-prefix=*)
 751   ;;
 752   --cc=*)
 753   ;;
 754   --host-cc=*) host_cc="$optarg"
 755   ;;
 756   --cxx=*)
 757   ;;
 758   --iasl=*) iasl="$optarg"
 759   ;;
 760   --objcc=*) objcc="$optarg"
 761   ;;
 762   --make=*) make="$optarg"
 763   ;;
 764   --install=*)
 765   ;;
 766   --python=*) python="$optarg" ; explicit_python=yes
 767   ;;
 768   --sphinx-build=*) sphinx_build="$optarg"
 769   ;;
 770   --skip-meson) skip_meson=yes
 771   ;;
 772   --meson=*) meson="$optarg"
 773   ;;
 774   --ninja=*) ninja="$optarg"
 775   ;;
 776   --smbd=*) smbd="$optarg"
 777   ;;
 778   --extra-cflags=*)
 779   ;;
 780   --extra-cxxflags=*)
 781   ;;
 782   --extra-ldflags=*)
 783   ;;
 784   --enable-debug-info)
 785   ;;
 786   --disable-debug-info)
 787   ;;
 788   --cross-cc-*)
 789   ;;
 790   --enable-modules)
 791       modules="yes"
 792   ;;
 793   --disable-modules)
 794       modules="no"
 795   ;;
 796   --disable-module-upgrades) module_upgrades="no"
 797   ;;
 798   --enable-module-upgrades) module_upgrades="yes"
 799   ;;
 800   --cpu=*)
 801   ;;
 802   --target-list=*) target_list="$optarg"
 803                    if test "$target_list_exclude"; then
 804                        error_exit "Can't mix --target-list with --target-list-exclude"
 805                    fi
 806   ;;
 807   --target-list-exclude=*) target_list_exclude="$optarg"
 808                    if test "$target_list"; then
 809                        error_exit "Can't mix --target-list-exclude with --target-list"
 810                    fi
 811   ;;
 812   --with-trace-file=*) trace_file="$optarg"
 813   ;;
 814   --with-default-devices) default_devices="true"
 815   ;;
 816   --without-default-devices) default_devices="false"
 817   ;;
 818   --with-devices-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --with-devices-FOO option"
 819   ;;
 820   --with-devices-*) device_arch=${opt#--with-devices-};
 821                     device_arch=${device_arch%%=*}
 822                     cf=$source_path/configs/devices/$device_arch-softmmu/$optarg.mak
 823                     if test -f "$cf"; then
 824                         device_archs="$device_archs $device_arch"
 825                         eval "devices_${device_arch}=\$optarg"
 826                     else
 827                         error_exit "File $cf does not exist"
 828                     fi
 829   ;;
 830   --without-default-features) # processed above
 831   ;;
 832   --enable-gprof) gprof="yes"
 833   ;;
 834   --enable-gcov) gcov="yes"
 835   ;;
 836   --static)
 837     static="yes"
 838     QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
 839   ;;
 840   --mandir=*) mandir="$optarg"
 841   ;;
 842   --bindir=*) bindir="$optarg"
 843   ;;
 844   --libdir=*) libdir="$optarg"
 845   ;;
 846   --libexecdir=*) libexecdir="$optarg"
 847   ;;
 848   --includedir=*) includedir="$optarg"
 849   ;;
 850   --datadir=*) datadir="$optarg"
 851   ;;
 852   --with-suffix=*) qemu_suffix="$optarg"
 853   ;;
 854   --docdir=*) docdir="$optarg"
 855   ;;
 856   --localedir=*) localedir="$optarg"
 857   ;;
 858   --sysconfdir=*) sysconfdir="$optarg"
 859   ;;
 860   --localstatedir=*) local_statedir="$optarg"
 861   ;;
 862   --firmwarepath=*) firmwarepath="$optarg"
 863   ;;
 864   --host=*|--build=*|\
 865   --disable-dependency-tracking|\
 866   --sbindir=*|--sharedstatedir=*|\
 867   --oldincludedir=*|--datarootdir=*|--infodir=*|\
 868   --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
 869     # These switches are silently ignored, for compatibility with
 870     # autoconf-generated configure scripts. This allows QEMU's
 871     # configure to be used by RPM and similar macros that set
 872     # lots of directory switches by default.
 873   ;;
 874   --disable-qom-cast-debug) qom_cast_debug="no"
 875   ;;
 876   --enable-qom-cast-debug) qom_cast_debug="yes"
 877   ;;
 878   --audio-drv-list=*) audio_drv_list="$optarg"
 879   ;;
 880   --block-drv-rw-whitelist=*|--block-drv-whitelist=*) block_drv_rw_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
 881   ;;
 882   --block-drv-ro-whitelist=*) block_drv_ro_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
 883   ;;
 884   --enable-block-drv-whitelist-in-tools) block_drv_whitelist_tools="yes"
 885   ;;
 886   --disable-block-drv-whitelist-in-tools) block_drv_whitelist_tools="no"
 887   ;;
 888   --enable-debug-tcg) debug_tcg="yes"
 889   ;;
 890   --disable-debug-tcg) debug_tcg="no"
 891   ;;
 892   --enable-debug)
 893       # Enable debugging options that aren't excessively noisy
 894       debug_tcg="yes"
 895       debug_mutex="yes"
 896       debug="yes"
 897       strip_opt="no"
 898       fortify_source="no"
 899   ;;
 900   --enable-sanitizers) sanitizers="yes"
 901   ;;
 902   --disable-sanitizers) sanitizers="no"
 903   ;;
 904   --enable-tsan) tsan="yes"
 905   ;;
 906   --disable-tsan) tsan="no"
 907   ;;
 908   --disable-strip) strip_opt="no"
 909   ;;
 910   --disable-slirp) slirp="disabled"
 911   ;;
 912   --enable-slirp) slirp="enabled"
 913   ;;
 914   --enable-slirp=git) slirp="internal"
 915   ;;
 916   --enable-slirp=*) slirp="$optarg"
 917   ;;
 918   --disable-xen) xen="disabled"
 919   ;;
 920   --enable-xen) xen="enabled"
 921   ;;
 922   --disable-tcg) tcg="disabled"
 923                  plugins="no"
 924   ;;
 925   --enable-tcg) tcg="enabled"
 926   ;;
 927   --enable-profiler) profiler="yes"
 928   ;;
 929   --disable-system) softmmu="no"
 930   ;;
 931   --enable-system) softmmu="yes"
 932   ;;
 933   --disable-user)
 934       linux_user="no" ;
 935       bsd_user="no" ;
 936   ;;
 937   --enable-user) ;;
 938   --disable-linux-user) linux_user="no"
 939   ;;
 940   --enable-linux-user) linux_user="yes"
 941   ;;
 942   --disable-bsd-user) bsd_user="no"
 943   ;;
 944   --enable-bsd-user) bsd_user="yes"
 945   ;;
 946   --enable-pie) pie="yes"
 947   ;;
 948   --disable-pie) pie="no"
 949   ;;
 950   --enable-werror) werror="yes"
 951   ;;
 952   --disable-werror) werror="no"
 953   ;;
 954   --enable-lto) lto="true"
 955   ;;
 956   --disable-lto) lto="false"
 957   ;;
 958   --enable-stack-protector) stack_protector="yes"
 959   ;;
 960   --disable-stack-protector) stack_protector="no"
 961   ;;
 962   --enable-safe-stack) safe_stack="yes"
 963   ;;
 964   --disable-safe-stack) safe_stack="no"
 965   ;;
 966   --enable-cfi)
 967       cfi="true";
 968       lto="true";
 969   ;;
 970   --disable-cfi) cfi="false"
 971   ;;
 972   --disable-fdt) fdt="disabled"
 973   ;;
 974   --enable-fdt) fdt="enabled"
 975   ;;
 976   --enable-fdt=git) fdt="internal"
 977   ;;
 978   --enable-fdt=*) fdt="$optarg"
 979   ;;
 980   --disable-membarrier) membarrier="no"
 981   ;;
 982   --enable-membarrier) membarrier="yes"
 983   ;;
 984   --with-pkgversion=*) pkgversion="$optarg"
 985   ;;
 986   --with-coroutine=*) coroutine="$optarg"
 987   ;;
 988   --disable-coroutine-pool) coroutine_pool="no"
 989   ;;
 990   --enable-coroutine-pool) coroutine_pool="yes"
 991   ;;
 992   --enable-debug-stack-usage) debug_stack_usage="yes"
 993   ;;
 994   --enable-crypto-afalg) crypto_afalg="yes"
 995   ;;
 996   --disable-crypto-afalg) crypto_afalg="no"
 997   ;;
 998   --disable-vhost-net) vhost_net="no"
 999   ;;
1000   --enable-vhost-net) vhost_net="yes"
1001   ;;
1002   --disable-vhost-crypto) vhost_crypto="no"
1003   ;;
1004   --enable-vhost-crypto) vhost_crypto="yes"
1005   ;;
1006   --disable-vhost-scsi) vhost_scsi="no"
1007   ;;
1008   --enable-vhost-scsi) vhost_scsi="yes"
1009   ;;
1010   --disable-vhost-vsock) vhost_vsock="no"
1011   ;;
1012   --enable-vhost-vsock) vhost_vsock="yes"
1013   ;;
1014   --disable-vhost-user-fs) vhost_user_fs="no"
1015   ;;
1016   --enable-vhost-user-fs) vhost_user_fs="yes"
1017   ;;
1018   --disable-opengl) opengl="no"
1019   ;;
1020   --enable-opengl) opengl="yes"
1021   ;;
1022   --disable-xfsctl) xfs="no"
1023   ;;
1024   --enable-xfsctl) xfs="yes"
1025   ;;
1026   --disable-zlib-test)
1027   ;;
1028   --enable-guest-agent) guest_agent="yes"
1029   ;;
1030   --disable-guest-agent) guest_agent="no"
1031   ;;
1032   --with-vss-sdk) vss_win32_sdk=""
1033   ;;
1034   --with-vss-sdk=*) vss_win32_sdk="$optarg"
1035   ;;
1036   --without-vss-sdk) vss_win32_sdk="no"
1037   ;;
1038   --with-win-sdk) win_sdk=""
1039   ;;
1040   --with-win-sdk=*) win_sdk="$optarg"
1041   ;;
1042   --without-win-sdk) win_sdk="no"
1043   ;;
1044   --enable-tools) want_tools="yes"
1045   ;;
1046   --disable-tools) want_tools="no"
1047   ;;
1048   --disable-avx2) avx2_opt="no"
1049   ;;
1050   --enable-avx2) avx2_opt="yes"
1051   ;;
1052   --disable-avx512f) avx512f_opt="no"
1053   ;;
1054   --enable-avx512f) avx512f_opt="yes"
1055   ;;
1056   --disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
1057       echo "$0: $opt is obsolete, virtio-blk data-plane is always on" >&2
1058   ;;
1059   --enable-vhdx|--disable-vhdx)
1060       echo "$0: $opt is obsolete, VHDX driver is always built" >&2
1061   ;;
1062   --enable-uuid|--disable-uuid)
1063       echo "$0: $opt is obsolete, UUID support is always built" >&2
1064   ;;
1065   --tls-priority=*) tls_priority="$optarg"
1066   ;;
1067   --enable-rdma) rdma="yes"
1068   ;;
1069   --disable-rdma) rdma="no"
1070   ;;
1071   --enable-pvrdma) pvrdma="yes"
1072   ;;
1073   --disable-pvrdma) pvrdma="no"
1074   ;;
1075   --disable-tpm) tpm="no"
1076   ;;
1077   --enable-tpm) tpm="yes"
1078   ;;
1079   --disable-libssh) libssh="no"
1080   ;;
1081   --enable-libssh) libssh="yes"
1082   ;;
1083   --disable-live-block-migration) live_block_migration="no"
1084   ;;
1085   --enable-live-block-migration) live_block_migration="yes"
1086   ;;
1087   --disable-numa) numa="no"
1088   ;;
1089   --enable-numa) numa="yes"
1090   ;;
1091   --disable-replication) replication="no"
1092   ;;
1093   --enable-replication) replication="yes"
1094   ;;
1095   --disable-bochs) bochs="no"
1096   ;;
1097   --enable-bochs) bochs="yes"
1098   ;;
1099   --disable-cloop) cloop="no"
1100   ;;
1101   --enable-cloop) cloop="yes"
1102   ;;
1103   --disable-dmg) dmg="no"
1104   ;;
1105   --enable-dmg) dmg="yes"
1106   ;;
1107   --disable-qcow1) qcow1="no"
1108   ;;
1109   --enable-qcow1) qcow1="yes"
1110   ;;
1111   --disable-vdi) vdi="no"
1112   ;;
1113   --enable-vdi) vdi="yes"
1114   ;;
1115   --disable-vvfat) vvfat="no"
1116   ;;
1117   --enable-vvfat) vvfat="yes"
1118   ;;
1119   --disable-qed) qed="no"
1120   ;;
1121   --enable-qed) qed="yes"
1122   ;;
1123   --disable-parallels) parallels="no"
1124   ;;
1125   --enable-parallels) parallels="yes"
1126   ;;
1127   --disable-vhost-user) vhost_user="no"
1128   ;;
1129   --enable-vhost-user) vhost_user="yes"
1130   ;;
1131   --disable-vhost-vdpa) vhost_vdpa="no"
1132   ;;
1133   --enable-vhost-vdpa) vhost_vdpa="yes"
1134   ;;
1135   --disable-vhost-kernel) vhost_kernel="no"
1136   ;;
1137   --enable-vhost-kernel) vhost_kernel="yes"
1138   ;;
1139   --disable-capstone) capstone="disabled"
1140   ;;
1141   --enable-capstone) capstone="enabled"
1142   ;;
1143   --enable-capstone=git) capstone="internal"
1144   ;;
1145   --enable-capstone=*) capstone="$optarg"
1146   ;;
1147   --with-git=*) git="$optarg"
1148   ;;
1149   --with-git-submodules=*)
1150       git_submodules_action="$optarg"
1151   ;;
1152   --enable-debug-mutex) debug_mutex=yes
1153   ;;
1154   --disable-debug-mutex) debug_mutex=no
1155   ;;
1156   --enable-plugins) if test "$mingw32" = "yes"; then
1157                         error_exit "TCG plugins not currently supported on Windows platforms"
1158                     else
1159                         plugins="yes"
1160                     fi
1161   ;;
1162   --disable-plugins) plugins="no"
1163   ;;
1164   --enable-containers) use_containers="yes"
1165   ;;
1166   --disable-containers) use_containers="no"
1167   ;;
1168   --gdb=*) gdb_bin="$optarg"
1169   ;;
1170   --enable-rng-none) rng_none=yes
1171   ;;
1172   --disable-rng-none) rng_none=no
1173   ;;
1174   --enable-keyring) secret_keyring="yes"
1175   ;;
1176   --disable-keyring) secret_keyring="no"
1177   ;;
1178   --enable-gio) gio=yes
1179   ;;
1180   --disable-gio) gio=no
1181   ;;
1182   --enable-slirp-smbd) slirp_smbd=yes
1183   ;;
1184   --disable-slirp-smbd) slirp_smbd=no
1185   ;;
1186   # backwards compatibility options
1187   --enable-trace-backend=*) meson_option_parse "--enable-trace-backends=$optarg" "$optarg"
1188   ;;
1189   --disable-blobs) meson_option_parse --disable-install-blobs ""
1190   ;;
1191   --enable-tcmalloc) meson_option_parse --enable-malloc=tcmalloc tcmalloc
1192   ;;
1193   --enable-jemalloc) meson_option_parse --enable-malloc=jemalloc jemalloc
1194   ;;
1195   # everything else has the same name in configure and meson
1196   --enable-* | --disable-*) meson_option_parse "$opt" "$optarg"
1197   ;;
1198   *)
1199       echo "ERROR: unknown option $opt"
1200       echo "Try '$0 --help' for more information"
1201       exit 1
1202   ;;
1203   esac
1204 done
1205
1206 # test for any invalid configuration combinations
1207 if test "$plugins" = "yes" -a "$tcg" = "disabled"; then
1208     error_exit "Can't enable plugins on non-TCG builds"
1209 fi
1210
1211 case $git_submodules_action in
1212     update|validate)
1213         if test ! -e "$source_path/.git"; then
1214             echo "ERROR: cannot $git_submodules_action git submodules without .git"
1215             exit 1
1216         fi
1217     ;;
1218     ignore)
1219         if ! test -f "$source_path/ui/keycodemapdb/README"
1220         then
1221             echo
1222             echo "ERROR: missing GIT submodules"
1223             echo
1224             if test -e "$source_path/.git"; then
1225                 echo "--with-git-submodules=ignore specified but submodules were not"
1226                 echo "checked out.  Please initialize and update submodules."
1227             else
1228                 echo "This is not a GIT checkout but module content appears to"
1229                 echo "be missing. Do not use 'git archive' or GitHub download links"
1230                 echo "to acquire QEMU source archives. Non-GIT builds are only"
1231                 echo "supported with source archives linked from:"
1232                 echo
1233                 echo "  https://www.qemu.org/download/#source"
1234                 echo
1235                 echo "Developers working with GIT can use scripts/archive-source.sh"
1236                 echo "if they need to create valid source archives."
1237             fi
1238             echo
1239             exit 1
1240         fi
1241     ;;
1242     *)
1243         echo "ERROR: invalid --with-git-submodules= value '$git_submodules_action'"
1244         exit 1
1245     ;;
1246 esac
1247
1248 libdir="${libdir:-$prefix/lib}"
1249 libexecdir="${libexecdir:-$prefix/libexec}"
1250 includedir="${includedir:-$prefix/include}"
1251
1252 if test "$mingw32" = "yes" ; then
1253     bindir="${bindir:-$prefix}"
1254 else
1255     bindir="${bindir:-$prefix/bin}"
1256 fi
1257 mandir="${mandir:-$prefix/share/man}"
1258 datadir="${datadir:-$prefix/share}"
1259 docdir="${docdir:-$prefix/share/doc}"
1260 sysconfdir="${sysconfdir:-$prefix/etc}"
1261 local_statedir="${local_statedir:-$prefix/var}"
1262 firmwarepath="${firmwarepath:-$datadir/qemu-firmware}"
1263 localedir="${localedir:-$datadir/locale}"
1264
1265 case "$cpu" in
1266     ppc)
1267            CPU_CFLAGS="-m32"
1268            QEMU_LDFLAGS="-m32 $QEMU_LDFLAGS"
1269            ;;
1270     ppc64)
1271            CPU_CFLAGS="-m64"
1272            QEMU_LDFLAGS="-m64 $QEMU_LDFLAGS"
1273            ;;
1274     sparc)
1275            CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc"
1276            QEMU_LDFLAGS="-m32 -mv8plus $QEMU_LDFLAGS"
1277            ;;
1278     sparc64)
1279            CPU_CFLAGS="-m64 -mcpu=ultrasparc"
1280            QEMU_LDFLAGS="-m64 $QEMU_LDFLAGS"
1281            ;;
1282     s390)
1283            CPU_CFLAGS="-m31"
1284            QEMU_LDFLAGS="-m31 $QEMU_LDFLAGS"
1285            ;;
1286     s390x)
1287            CPU_CFLAGS="-m64"
1288            QEMU_LDFLAGS="-m64 $QEMU_LDFLAGS"
1289            ;;
1290     i386)
1291            CPU_CFLAGS="-m32"
1292            QEMU_LDFLAGS="-m32 $QEMU_LDFLAGS"
1293            ;;
1294     x86_64)
1295            # ??? Only extremely old AMD cpus do not have cmpxchg16b.
1296            # If we truly care, we should simply detect this case at
1297            # runtime and generate the fallback to serial emulation.
1298            CPU_CFLAGS="-m64 -mcx16"
1299            QEMU_LDFLAGS="-m64 $QEMU_LDFLAGS"
1300            ;;
1301     x32)
1302            CPU_CFLAGS="-mx32"
1303            QEMU_LDFLAGS="-mx32 $QEMU_LDFLAGS"
1304            ;;
1305     # No special flags required for other host CPUs
1306 esac
1307
1308 if eval test -z "\${cross_cc_$cpu}"; then
1309     eval "cross_cc_${cpu}=\$cc"
1310     cross_cc_vars="$cross_cc_vars cross_cc_${cpu}"
1311 fi
1312
1313 # For user-mode emulation the host arch has to be one we explicitly
1314 # support, even if we're using TCI.
1315 if [ "$ARCH" = "unknown" ]; then
1316   bsd_user="no"
1317   linux_user="no"
1318 fi
1319
1320 default_target_list=""
1321 deprecated_targets_list=ppc64abi32-linux-user
1322 deprecated_features=""
1323 mak_wilds=""
1324
1325 if [ "$softmmu" = "yes" ]; then
1326     mak_wilds="${mak_wilds} $source_path/configs/targets/*-softmmu.mak"
1327 fi
1328 if [ "$linux_user" = "yes" ]; then
1329     mak_wilds="${mak_wilds} $source_path/configs/targets/*-linux-user.mak"
1330 fi
1331 if [ "$bsd_user" = "yes" ]; then
1332     mak_wilds="${mak_wilds} $source_path/configs/targets/*-bsd-user.mak"
1333 fi
1334
1335 # If the user doesn't explicitly specify a deprecated target we will
1336 # skip it.
1337 if test -z "$target_list"; then
1338     if test -z "$target_list_exclude"; then
1339         target_list_exclude="$deprecated_targets_list"
1340     else
1341         target_list_exclude="$target_list_exclude,$deprecated_targets_list"
1342     fi
1343 fi
1344
1345 for config in $mak_wilds; do
1346     target="$(basename "$config" .mak)"
1347     if echo "$target_list_exclude" | grep -vq "$target"; then
1348         default_target_list="${default_target_list} $target"
1349     fi
1350 done
1351
1352 if test x"$show_help" = x"yes" ; then
1353 cat << EOF
1354
1355 Usage: configure [options]
1356 Options: [defaults in brackets after descriptions]
1357
1358 Standard options:
1359   --help                   print this message
1360   --prefix=PREFIX          install in PREFIX [$prefix]
1361   --interp-prefix=PREFIX   where to find shared libraries, etc.
1362                            use %M for cpu name [$interp_prefix]
1363   --target-list=LIST       set target list (default: build all non-deprecated)
1364 $(echo Available targets: $default_target_list | \
1365   fold -s -w 53 | sed -e 's/^/                           /')
1366 $(echo Deprecated targets: $deprecated_targets_list | \
1367   fold -s -w 53 | sed -e 's/^/                           /')
1368   --target-list-exclude=LIST exclude a set of targets from the default target-list
1369
1370 Advanced options (experts only):
1371   --cross-prefix=PREFIX    use PREFIX for compile tools, PREFIX can be blank [$cross_prefix]
1372   --cc=CC                  use C compiler CC [$cc]
1373   --iasl=IASL              use ACPI compiler IASL [$iasl]
1374   --host-cc=CC             use C compiler CC [$host_cc] for code run at
1375                            build time
1376   --cxx=CXX                use C++ compiler CXX [$cxx]
1377   --objcc=OBJCC            use Objective-C compiler OBJCC [$objcc]
1378   --extra-cflags=CFLAGS    append extra C compiler flags QEMU_CFLAGS
1379   --extra-cxxflags=CXXFLAGS append extra C++ compiler flags QEMU_CXXFLAGS
1380   --extra-ldflags=LDFLAGS  append extra linker flags LDFLAGS
1381   --cross-cc-ARCH=CC       use compiler when building ARCH guest test cases
1382   --cross-cc-flags-ARCH=   use compiler flags when building ARCH guest tests
1383   --make=MAKE              use specified make [$make]
1384   --python=PYTHON          use specified python [$python]
1385   --sphinx-build=SPHINX    use specified sphinx-build [$sphinx_build]
1386   --meson=MESON            use specified meson [$meson]
1387   --ninja=NINJA            use specified ninja [$ninja]
1388   --smbd=SMBD              use specified smbd [$smbd]
1389   --with-git=GIT           use specified git [$git]
1390   --with-git-submodules=update   update git submodules (default if .git dir exists)
1391   --with-git-submodules=validate fail if git submodules are not up to date
1392   --with-git-submodules=ignore   do not update or check git submodules (default if no .git dir)
1393   --static                 enable static build [$static]
1394   --mandir=PATH            install man pages in PATH
1395   --datadir=PATH           install firmware in PATH/$qemu_suffix
1396   --localedir=PATH         install translation in PATH/$qemu_suffix
1397   --docdir=PATH            install documentation in PATH/$qemu_suffix
1398   --bindir=PATH            install binaries in PATH
1399   --libdir=PATH            install libraries in PATH
1400   --libexecdir=PATH        install helper binaries in PATH
1401   --sysconfdir=PATH        install config in PATH/$qemu_suffix
1402   --localstatedir=PATH     install local state in PATH (set at runtime on win32)
1403   --firmwarepath=PATH      search PATH for firmware files
1404   --efi-aarch64=PATH       PATH of efi file to use for aarch64 VMs.
1405   --with-suffix=SUFFIX     suffix for QEMU data inside datadir/libdir/sysconfdir/docdir [$qemu_suffix]
1406   --with-pkgversion=VERS   use specified string as sub-version of the package
1407   --without-default-features default all --enable-* options to "disabled"
1408   --without-default-devices  do not include any device that is not needed to
1409                            start the emulator (only use if you are including
1410                            desired devices in configs/devices/)
1411   --with-devices-ARCH=NAME override default configs/devices
1412   --enable-debug           enable common debug build options
1413   --enable-sanitizers      enable default sanitizers
1414   --enable-tsan            enable thread sanitizer
1415   --disable-strip          disable stripping binaries
1416   --disable-werror         disable compilation abort on warning
1417   --disable-stack-protector disable compiler-provided stack protection
1418   --audio-drv-list=LIST    set audio drivers list
1419   --block-drv-whitelist=L  Same as --block-drv-rw-whitelist=L
1420   --block-drv-rw-whitelist=L
1421                            set block driver read-write whitelist
1422                            (by default affects only QEMU, not tools like qemu-img)
1423   --block-drv-ro-whitelist=L
1424                            set block driver read-only whitelist
1425                            (by default affects only QEMU, not tools like qemu-img)
1426   --enable-block-drv-whitelist-in-tools
1427                            use block whitelist also in tools instead of only QEMU
1428   --with-trace-file=NAME   Full PATH,NAME of file to store traces
1429                            Default:trace-<pid>
1430   --cpu=CPU                Build for host CPU [$cpu]
1431   --with-coroutine=BACKEND coroutine backend. Supported options:
1432                            ucontext, sigaltstack, windows
1433   --enable-gcov            enable test coverage analysis with gcov
1434   --with-vss-sdk=SDK-path  enable Windows VSS support in QEMU Guest Agent
1435   --with-win-sdk=SDK-path  path to Windows Platform SDK (to build VSS .tlb)
1436   --tls-priority           default TLS protocol/cipher priority string
1437   --enable-gprof           QEMU profiling with gprof
1438   --enable-profiler        profiler support
1439   --enable-debug-stack-usage
1440                            track the maximum stack usage of stacks created by qemu_alloc_stack
1441   --enable-plugins
1442                            enable plugins via shared library loading
1443   --disable-containers     don't use containers for cross-building
1444   --gdb=GDB-path           gdb to use for gdbstub tests [$gdb_bin]
1445 EOF
1446   meson_options_help
1447 cat << EOF
1448   system          all system emulation targets
1449   user            supported user emulation targets
1450   linux-user      all linux usermode emulation targets
1451   bsd-user        all BSD usermode emulation targets
1452   guest-agent     build the QEMU Guest Agent
1453   pie             Position Independent Executables
1454   modules         modules support (non-Windows)
1455   module-upgrades try to load modules from alternate paths for upgrades
1456   debug-tcg       TCG debugging (default is disabled)
1457   debug-info      debugging information
1458   lto             Enable Link-Time Optimization.
1459   safe-stack      SafeStack Stack Smash Protection. Depends on
1460                   clang/llvm >= 3.7 and requires coroutine backend ucontext.
1461   membarrier      membarrier system call (for Linux 4.14+ or Windows)
1462   rdma            Enable RDMA-based migration
1463   pvrdma          Enable PVRDMA support
1464   vhost-net       vhost-net kernel acceleration support
1465   vhost-vsock     virtio sockets device support
1466   vhost-scsi      vhost-scsi kernel target support
1467   vhost-crypto    vhost-user-crypto backend support
1468   vhost-kernel    vhost kernel backend support
1469   vhost-user      vhost-user backend support
1470   vhost-vdpa      vhost-vdpa kernel backend support
1471   live-block-migration   Block migration in the main migration stream
1472   coroutine-pool  coroutine freelist (better performance)
1473   tpm             TPM support
1474   libssh          ssh block device support
1475   numa            libnuma support
1476   avx2            AVX2 optimization support
1477   avx512f         AVX512F optimization support
1478   replication     replication support
1479   opengl          opengl support
1480   xfsctl          xfsctl support
1481   qom-cast-debug  cast debugging support
1482   tools           build qemu-io, qemu-nbd and qemu-img tools
1483   bochs           bochs image format support
1484   cloop           cloop image format support
1485   dmg             dmg image format support
1486   qcow1           qcow v1 image format support
1487   vdi             vdi image format support
1488   vvfat           vvfat image format support
1489   qed             qed image format support
1490   parallels       parallels image format support
1491   crypto-afalg    Linux AF_ALG crypto backend driver
1492   debug-mutex     mutex debugging support
1493   rng-none        dummy RNG, avoid using /dev/(u)random and getrandom()
1494   gio             libgio support
1495   slirp-smbd      use smbd (at path --smbd=*) in slirp networking
1496
1497 NOTE: The object files are built at the place where configure is launched
1498 EOF
1499 exit 0
1500 fi
1501
1502 # Remove old dependency files to make sure that they get properly regenerated
1503 rm -f */config-devices.mak.d
1504
1505 if test -z "$python"
1506 then
1507     error_exit "Python not found. Use --python=/path/to/python"
1508 fi
1509 if ! has "$make"
1510 then
1511     error_exit "GNU make ($make) not found"
1512 fi
1513
1514 # Note that if the Python conditional here evaluates True we will exit
1515 # with status 1 which is a shell 'false' value.
1516 if ! $python -c 'import sys; sys.exit(sys.version_info < (3,6))'; then
1517   error_exit "Cannot use '$python', Python >= 3.6 is required." \
1518       "Use --python=/path/to/python to specify a supported Python."
1519 fi
1520
1521 # Preserve python version since some functionality is dependent on it
1522 python_version=$($python -c 'import sys; print("%d.%d.%d" % (sys.version_info[0], sys.version_info[1], sys.version_info[2]))' 2>/dev/null)
1523
1524 # Suppress writing compiled files
1525 python="$python -B"
1526
1527 if test -z "$meson"; then
1528     if test "$explicit_python" = no && has meson && version_ge "$(meson --version)" 0.59.2; then
1529         meson=meson
1530     elif test $git_submodules_action != 'ignore' ; then
1531         meson=git
1532     elif test -e "${source_path}/meson/meson.py" ; then
1533         meson=internal
1534     else
1535         if test "$explicit_python" = yes; then
1536             error_exit "--python requires using QEMU's embedded Meson distribution, but it was not found."
1537         else
1538             error_exit "Meson not found.  Use --meson=/path/to/meson"
1539         fi
1540     fi
1541 else
1542     # Meson uses its own Python interpreter to invoke other Python scripts,
1543     # but the user wants to use the one they specified with --python.
1544     #
1545     # We do not want to override the distro Python interpreter (and sometimes
1546     # cannot: for example in Homebrew /usr/bin/meson is a bash script), so
1547     # just require --meson=git|internal together with --python.
1548     if test "$explicit_python" = yes; then
1549         case "$meson" in
1550             git | internal) ;;
1551             *) error_exit "--python requires using QEMU's embedded Meson distribution." ;;
1552         esac
1553     fi
1554 fi
1555
1556 if test "$meson" = git; then
1557     git_submodules="${git_submodules} meson"
1558 fi
1559
1560 case "$meson" in
1561     git | internal)
1562         meson="$python ${source_path}/meson/meson.py"
1563         ;;
1564     *) meson=$(command -v "$meson") ;;
1565 esac
1566
1567 # Probe for ninja
1568
1569 if test -z "$ninja"; then
1570     for c in ninja ninja-build samu; do
1571         if has $c; then
1572             ninja=$(command -v "$c")
1573             break
1574         fi
1575     done
1576     if test -z "$ninja"; then
1577       error_exit "Cannot find Ninja"
1578     fi
1579 fi
1580
1581 # Check that the C compiler works. Doing this here before testing
1582 # the host CPU ensures that we had a valid CC to autodetect the
1583 # $cpu var (and we should bail right here if that's not the case).
1584 # It also allows the help message to be printed without a CC.
1585 write_c_skeleton;
1586 if compile_object ; then
1587   : C compiler works ok
1588 else
1589     error_exit "\"$cc\" either does not exist or does not work"
1590 fi
1591 if ! compile_prog ; then
1592     error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
1593 fi
1594
1595 # Consult white-list to determine whether to enable werror
1596 # by default.  Only enable by default for git builds
1597 if test -z "$werror" ; then
1598     if test "$git_submodules_action" != "ignore" && \
1599         { test "$linux" = "yes" || test "$mingw32" = "yes"; }; then
1600         werror="yes"
1601     else
1602         werror="no"
1603     fi
1604 fi
1605
1606 if test "$targetos" = "bogus"; then
1607     # Now that we know that we're not printing the help and that
1608     # the compiler works (so the results of the check_defines we used
1609     # to identify the OS are reliable), if we didn't recognize the
1610     # host OS we should stop now.
1611     error_exit "Unrecognized host OS (uname -s reports '$(uname -s)')"
1612 fi
1613
1614 # Check whether the compiler matches our minimum requirements:
1615 cat > $TMPC << EOF
1616 #if defined(__clang_major__) && defined(__clang_minor__)
1617 # ifdef __apple_build_version__
1618 #  if __clang_major__ < 10 || (__clang_major__ == 10 && __clang_minor__ < 0)
1619 #   error You need at least XCode Clang v10.0 to compile QEMU
1620 #  endif
1621 # else
1622 #  if __clang_major__ < 6 || (__clang_major__ == 6 && __clang_minor__ < 0)
1623 #   error You need at least Clang v6.0 to compile QEMU
1624 #  endif
1625 # endif
1626 #elif defined(__GNUC__) && defined(__GNUC_MINOR__)
1627 # if __GNUC__ < 7 || (__GNUC__ == 7 && __GNUC_MINOR__ < 4)
1628 #  error You need at least GCC v7.4.0 to compile QEMU
1629 # endif
1630 #else
1631 # error You either need GCC or Clang to compiler QEMU
1632 #endif
1633 int main (void) { return 0; }
1634 EOF
1635 if ! compile_prog "" "" ; then
1636     error_exit "You need at least GCC v7.4 or Clang v6.0 (or XCode Clang v10.0)"
1637 fi
1638
1639 # Accumulate -Wfoo and -Wno-bar separately.
1640 # We will list all of the enable flags first, and the disable flags second.
1641 # Note that we do not add -Werror, because that would enable it for all
1642 # configure tests. If a configure test failed due to -Werror this would
1643 # just silently disable some features, so it's too error prone.
1644
1645 warn_flags=
1646 add_to warn_flags -Wold-style-declaration
1647 add_to warn_flags -Wold-style-definition
1648 add_to warn_flags -Wtype-limits
1649 add_to warn_flags -Wformat-security
1650 add_to warn_flags -Wformat-y2k
1651 add_to warn_flags -Winit-self
1652 add_to warn_flags -Wignored-qualifiers
1653 add_to warn_flags -Wempty-body
1654 add_to warn_flags -Wnested-externs
1655 add_to warn_flags -Wendif-labels
1656 add_to warn_flags -Wexpansion-to-defined
1657 add_to warn_flags -Wimplicit-fallthrough=2
1658
1659 nowarn_flags=
1660 add_to nowarn_flags -Wno-initializer-overrides
1661 add_to nowarn_flags -Wno-missing-include-dirs
1662 add_to nowarn_flags -Wno-shift-negative-value
1663 add_to nowarn_flags -Wno-string-plus-int
1664 add_to nowarn_flags -Wno-typedef-redefinition
1665 add_to nowarn_flags -Wno-tautological-type-limit-compare
1666 add_to nowarn_flags -Wno-psabi
1667
1668 gcc_flags="$warn_flags $nowarn_flags"
1669
1670 cc_has_warning_flag() {
1671     write_c_skeleton;
1672
1673     # Use the positive sense of the flag when testing for -Wno-wombat
1674     # support (gcc will happily accept the -Wno- form of unknown
1675     # warning options).
1676     optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1677     compile_prog "-Werror $optflag" ""
1678 }
1679
1680 for flag in $gcc_flags; do
1681     if cc_has_warning_flag $flag ; then
1682         QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1683     fi
1684 done
1685
1686 if test "$stack_protector" != "no"; then
1687   cat > $TMPC << EOF
1688 int main(int argc, char *argv[])
1689 {
1690     char arr[64], *p = arr, *c = argv[0];
1691     while (*c) {
1692         *p++ = *c++;
1693     }
1694     return 0;
1695 }
1696 EOF
1697   gcc_flags="-fstack-protector-strong -fstack-protector-all"
1698   sp_on=0
1699   for flag in $gcc_flags; do
1700     # We need to check both a compile and a link, since some compiler
1701     # setups fail only on a .c->.o compile and some only at link time
1702     if compile_object "-Werror $flag" &&
1703        compile_prog "-Werror $flag" ""; then
1704       QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1705       QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
1706       sp_on=1
1707       break
1708     fi
1709   done
1710   if test "$stack_protector" = yes; then
1711     if test $sp_on = 0; then
1712       error_exit "Stack protector not supported"
1713     fi
1714   fi
1715 fi
1716
1717 # Disable -Wmissing-braces on older compilers that warn even for
1718 # the "universal" C zero initializer {0}.
1719 cat > $TMPC << EOF
1720 struct {
1721   int a[2];
1722 } x = {0};
1723 EOF
1724 if compile_object "-Werror" "" ; then
1725   :
1726 else
1727   QEMU_CFLAGS="$QEMU_CFLAGS -Wno-missing-braces"
1728 fi
1729
1730 # Our module code doesn't support Windows
1731 if test "$modules" = "yes" && test "$mingw32" = "yes" ; then
1732   error_exit "Modules are not available for Windows"
1733 fi
1734
1735 # module_upgrades is only reasonable if modules are enabled
1736 if test "$modules" = "no" && test "$module_upgrades" = "yes" ; then
1737   error_exit "Can't enable module-upgrades as Modules are not enabled"
1738 fi
1739
1740 # Static linking is not possible with plugins, modules or PIE
1741 if test "$static" = "yes" ; then
1742   if test "$modules" = "yes" ; then
1743     error_exit "static and modules are mutually incompatible"
1744   fi
1745   if test "$plugins" = "yes"; then
1746     error_exit "static and plugins are mutually incompatible"
1747   else
1748     plugins="no"
1749   fi
1750 fi
1751
1752 # Unconditional check for compiler __thread support
1753   cat > $TMPC << EOF
1754 static __thread int tls_var;
1755 int main(void) { return tls_var; }
1756 EOF
1757
1758 if ! compile_prog "-Werror" "" ; then
1759     error_exit "Your compiler does not support the __thread specifier for " \
1760         "Thread-Local Storage (TLS). Please upgrade to a version that does."
1761 fi
1762
1763 cat > $TMPC << EOF
1764
1765 #ifdef __linux__
1766 #  define THREAD __thread
1767 #else
1768 #  define THREAD
1769 #endif
1770 static THREAD int tls_var;
1771 int main(void) { return tls_var; }
1772 EOF
1773
1774 # Check we support --no-pie first; we will need this for building ROMs.
1775 if compile_prog "-Werror -fno-pie" "-no-pie"; then
1776   CFLAGS_NOPIE="-fno-pie"
1777 fi
1778
1779 if test "$static" = "yes"; then
1780   if test "$pie" != "no" && compile_prog "-Werror -fPIE -DPIE" "-static-pie"; then
1781     CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
1782     QEMU_LDFLAGS="-static-pie $QEMU_LDFLAGS"
1783     pie="yes"
1784   elif test "$pie" = "yes"; then
1785     error_exit "-static-pie not available due to missing toolchain support"
1786   else
1787     QEMU_LDFLAGS="-static $QEMU_LDFLAGS"
1788     pie="no"
1789   fi
1790 elif test "$pie" = "no"; then
1791   CONFIGURE_CFLAGS="$CFLAGS_NOPIE $CONFIGURE_CFLAGS"
1792 elif compile_prog "-Werror -fPIE -DPIE" "-pie"; then
1793   CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
1794   CONFIGURE_LDFLAGS="-pie $CONFIGURE_LDFLAGS"
1795   pie="yes"
1796 elif test "$pie" = "yes"; then
1797   error_exit "PIE not available due to missing toolchain support"
1798 else
1799   echo "Disabling PIE due to missing toolchain support"
1800   pie="no"
1801 fi
1802
1803 # Detect support for PT_GNU_RELRO + DT_BIND_NOW.
1804 # The combination is known as "full relro", because .got.plt is read-only too.
1805 if compile_prog "" "-Wl,-z,relro -Wl,-z,now" ; then
1806   QEMU_LDFLAGS="-Wl,-z,relro -Wl,-z,now $QEMU_LDFLAGS"
1807 fi
1808
1809 ##########################################
1810 # __sync_fetch_and_and requires at least -march=i486. Many toolchains
1811 # use i686 as default anyway, but for those that don't, an explicit
1812 # specification is necessary
1813
1814 if test "$cpu" = "i386"; then
1815   cat > $TMPC << EOF
1816 static int sfaa(int *ptr)
1817 {
1818   return __sync_fetch_and_and(ptr, 0);
1819 }
1820
1821 int main(void)
1822 {
1823   int val = 42;
1824   val = __sync_val_compare_and_swap(&val, 0, 1);
1825   sfaa(&val);
1826   return val;
1827 }
1828 EOF
1829   if ! compile_prog "" "" ; then
1830     QEMU_CFLAGS="-march=i486 $QEMU_CFLAGS"
1831   fi
1832 fi
1833
1834 if test "$tcg" = "enabled"; then
1835     git_submodules="$git_submodules tests/fp/berkeley-testfloat-3"
1836     git_submodules="$git_submodules tests/fp/berkeley-softfloat-3"
1837 fi
1838
1839 if test -z "${target_list+xxx}" ; then
1840     default_targets=yes
1841     for target in $default_target_list; do
1842         target_list="$target_list $target"
1843     done
1844     target_list="${target_list# }"
1845 else
1846     default_targets=no
1847     target_list=$(echo "$target_list" | sed -e 's/,/ /g')
1848     for target in $target_list; do
1849         # Check that we recognised the target name; this allows a more
1850         # friendly error message than if we let it fall through.
1851         case " $default_target_list " in
1852             *" $target "*)
1853                 ;;
1854             *)
1855                 error_exit "Unknown target name '$target'"
1856                 ;;
1857         esac
1858     done
1859 fi
1860
1861 for target in $target_list; do
1862     # if a deprecated target is enabled we note it here
1863     if echo "$deprecated_targets_list" | grep -q "$target"; then
1864         add_to deprecated_features $target
1865     fi
1866 done
1867
1868 # see if system emulation was really requested
1869 case " $target_list " in
1870   *"-softmmu "*) softmmu=yes
1871   ;;
1872   *) softmmu=no
1873   ;;
1874 esac
1875
1876 feature_not_found() {
1877   feature=$1
1878   remedy=$2
1879
1880   error_exit "User requested feature $feature" \
1881       "configure was not able to find it." \
1882       "$remedy"
1883 }
1884
1885 # ---
1886 # big/little endian test
1887 cat > $TMPC << EOF
1888 #include <stdio.h>
1889 short big_endian[] = { 0x4269, 0x4765, 0x4e64, 0x4961, 0x4e00, 0, };
1890 short little_endian[] = { 0x694c, 0x7454, 0x654c, 0x6e45, 0x6944, 0x6e41, 0, };
1891 int main(int argc, char *argv[])
1892 {
1893     return printf("%s %s\n", (char *)big_endian, (char *)little_endian);
1894 }
1895 EOF
1896
1897 if compile_prog ; then
1898     if strings -a $TMPE | grep -q BiGeNdIaN ; then
1899         bigendian="yes"
1900     elif strings -a $TMPE | grep -q LiTtLeEnDiAn ; then
1901         bigendian="no"
1902     else
1903         echo big/little test failed
1904         exit 1
1905     fi
1906 else
1907     echo big/little test failed
1908     exit 1
1909 fi
1910
1911 ##########################################
1912 # system tools
1913 if test -z "$want_tools"; then
1914     if test "$softmmu" = "no"; then
1915         want_tools=no
1916     else
1917         want_tools=yes
1918     fi
1919 fi
1920
1921 ##########################################
1922 # L2TPV3 probe
1923
1924 cat > $TMPC <<EOF
1925 #include <sys/socket.h>
1926 #include <linux/ip.h>
1927 int main(void) { return sizeof(struct mmsghdr); }
1928 EOF
1929 if compile_prog "" "" ; then
1930   l2tpv3=yes
1931 else
1932   l2tpv3=no
1933 fi
1934
1935 #########################################
1936 # vhost interdependencies and host support
1937
1938 # vhost backends
1939 if test "$vhost_user" = "yes" && test "$linux" != "yes"; then
1940   error_exit "vhost-user is only available on Linux"
1941 fi
1942 test "$vhost_vdpa" = "" && vhost_vdpa=$linux
1943 if test "$vhost_vdpa" = "yes" && test "$linux" != "yes"; then
1944   error_exit "vhost-vdpa is only available on Linux"
1945 fi
1946 test "$vhost_kernel" = "" && vhost_kernel=$linux
1947 if test "$vhost_kernel" = "yes" && test "$linux" != "yes"; then
1948   error_exit "vhost-kernel is only available on Linux"
1949 fi
1950
1951 # vhost-kernel devices
1952 test "$vhost_scsi" = "" && vhost_scsi=$vhost_kernel
1953 if test "$vhost_scsi" = "yes" && test "$vhost_kernel" != "yes"; then
1954   error_exit "--enable-vhost-scsi requires --enable-vhost-kernel"
1955 fi
1956 test "$vhost_vsock" = "" && vhost_vsock=$vhost_kernel
1957 if test "$vhost_vsock" = "yes" && test "$vhost_kernel" != "yes"; then
1958   error_exit "--enable-vhost-vsock requires --enable-vhost-kernel"
1959 fi
1960
1961 # vhost-user backends
1962 test "$vhost_net_user" = "" && vhost_net_user=$vhost_user
1963 if test "$vhost_net_user" = "yes" && test "$vhost_user" = "no"; then
1964   error_exit "--enable-vhost-net-user requires --enable-vhost-user"
1965 fi
1966 test "$vhost_crypto" = "" && vhost_crypto=$vhost_user
1967 if test "$vhost_crypto" = "yes" && test "$vhost_user" = "no"; then
1968   error_exit "--enable-vhost-crypto requires --enable-vhost-user"
1969 fi
1970 test "$vhost_user_fs" = "" && vhost_user_fs=$vhost_user
1971 if test "$vhost_user_fs" = "yes" && test "$vhost_user" = "no"; then
1972   error_exit "--enable-vhost-user-fs requires --enable-vhost-user"
1973 fi
1974 #vhost-vdpa backends
1975 test "$vhost_net_vdpa" = "" && vhost_net_vdpa=$vhost_vdpa
1976 if test "$vhost_net_vdpa" = "yes" && test "$vhost_vdpa" = "no"; then
1977   error_exit "--enable-vhost-net-vdpa requires --enable-vhost-vdpa"
1978 fi
1979
1980 # OR the vhost-kernel, vhost-vdpa and vhost-user values for simplicity
1981 if test "$vhost_net" = ""; then
1982   test "$vhost_net_user" = "yes" && vhost_net=yes
1983   test "$vhost_net_vdpa" = "yes" && vhost_net=yes
1984   test "$vhost_kernel" = "yes" && vhost_net=yes
1985 fi
1986
1987 ##########################################
1988 # pkg-config probe
1989
1990 if ! has "$pkg_config_exe"; then
1991   error_exit "pkg-config binary '$pkg_config_exe' not found"
1992 fi
1993
1994 ##########################################
1995 # NPTL probe
1996
1997 if test "$linux_user" = "yes"; then
1998   cat > $TMPC <<EOF
1999 #include <sched.h>
2000 #include <linux/futex.h>
2001 int main(void) {
2002 #if !defined(CLONE_SETTLS) || !defined(FUTEX_WAIT)
2003 #error bork
2004 #endif
2005   return 0;
2006 }
2007 EOF
2008   if ! compile_object ; then
2009     feature_not_found "nptl" "Install glibc and linux kernel headers."
2010   fi
2011 fi
2012
2013 ##########################################
2014 # xen probe
2015
2016 if test "$xen" != "disabled" ; then
2017   # Check whether Xen library path is specified via --extra-ldflags to avoid
2018   # overriding this setting with pkg-config output. If not, try pkg-config
2019   # to obtain all needed flags.
2020
2021   if ! echo $EXTRA_LDFLAGS | grep tools/libxc > /dev/null && \
2022      $pkg_config --exists xencontrol ; then
2023     xen_ctrl_version="$(printf '%d%02d%02d' \
2024       $($pkg_config --modversion xencontrol | sed 's/\./ /g') )"
2025     xen=enabled
2026     xen_pc="xencontrol xenstore xenforeignmemory xengnttab"
2027     xen_pc="$xen_pc xenevtchn xendevicemodel"
2028     if $pkg_config --exists xentoolcore; then
2029       xen_pc="$xen_pc xentoolcore"
2030     fi
2031     xen_cflags="$($pkg_config --cflags $xen_pc)"
2032     xen_libs="$($pkg_config --libs $xen_pc)"
2033   else
2034
2035     xen_libs="-lxenstore -lxenctrl"
2036     xen_stable_libs="-lxenforeignmemory -lxengnttab -lxenevtchn"
2037
2038     # First we test whether Xen headers and libraries are available.
2039     # If no, we are done and there is no Xen support.
2040     # If yes, more tests are run to detect the Xen version.
2041
2042     # Xen (any)
2043     cat > $TMPC <<EOF
2044 #include <xenctrl.h>
2045 int main(void) {
2046   return 0;
2047 }
2048 EOF
2049     if ! compile_prog "" "$xen_libs" ; then
2050       # Xen not found
2051       if test "$xen" = "enabled" ; then
2052         feature_not_found "xen" "Install xen devel"
2053       fi
2054       xen=disabled
2055
2056     # Xen unstable
2057     elif
2058         cat > $TMPC <<EOF &&
2059 #undef XC_WANT_COMPAT_DEVICEMODEL_API
2060 #define __XEN_TOOLS__
2061 #include <xendevicemodel.h>
2062 #include <xenforeignmemory.h>
2063 int main(void) {
2064   xendevicemodel_handle *xd;
2065   xenforeignmemory_handle *xfmem;
2066
2067   xd = xendevicemodel_open(0, 0);
2068   xendevicemodel_pin_memory_cacheattr(xd, 0, 0, 0, 0);
2069
2070   xfmem = xenforeignmemory_open(0, 0);
2071   xenforeignmemory_map_resource(xfmem, 0, 0, 0, 0, 0, NULL, 0, 0);
2072
2073   return 0;
2074 }
2075 EOF
2076         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs -lxentoolcore"
2077       then
2078       xen_stable_libs="-lxendevicemodel $xen_stable_libs -lxentoolcore"
2079       xen_ctrl_version=41100
2080       xen=enabled
2081     elif
2082         cat > $TMPC <<EOF &&
2083 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
2084 #include <xenforeignmemory.h>
2085 #include <xentoolcore.h>
2086 int main(void) {
2087   xenforeignmemory_handle *xfmem;
2088
2089   xfmem = xenforeignmemory_open(0, 0);
2090   xenforeignmemory_map2(xfmem, 0, 0, 0, 0, 0, 0, 0);
2091   xentoolcore_restrict_all(0);
2092
2093   return 0;
2094 }
2095 EOF
2096         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs -lxentoolcore"
2097       then
2098       xen_stable_libs="-lxendevicemodel $xen_stable_libs -lxentoolcore"
2099       xen_ctrl_version=41000
2100       xen=enabled
2101     elif
2102         cat > $TMPC <<EOF &&
2103 #undef XC_WANT_COMPAT_DEVICEMODEL_API
2104 #define __XEN_TOOLS__
2105 #include <xendevicemodel.h>
2106 int main(void) {
2107   xendevicemodel_handle *xd;
2108
2109   xd = xendevicemodel_open(0, 0);
2110   xendevicemodel_close(xd);
2111
2112   return 0;
2113 }
2114 EOF
2115         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs"
2116       then
2117       xen_stable_libs="-lxendevicemodel $xen_stable_libs"
2118       xen_ctrl_version=40900
2119       xen=enabled
2120     elif
2121         cat > $TMPC <<EOF &&
2122 /*
2123  * If we have stable libs the we don't want the libxc compat
2124  * layers, regardless of what CFLAGS we may have been given.
2125  *
2126  * Also, check if xengnttab_grant_copy_segment_t is defined and
2127  * grant copy operation is implemented.
2128  */
2129 #undef XC_WANT_COMPAT_EVTCHN_API
2130 #undef XC_WANT_COMPAT_GNTTAB_API
2131 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
2132 #include <xenctrl.h>
2133 #include <xenstore.h>
2134 #include <xenevtchn.h>
2135 #include <xengnttab.h>
2136 #include <xenforeignmemory.h>
2137 #include <stdint.h>
2138 #include <xen/hvm/hvm_info_table.h>
2139 #if !defined(HVM_MAX_VCPUS)
2140 # error HVM_MAX_VCPUS not defined
2141 #endif
2142 int main(void) {
2143   xc_interface *xc = NULL;
2144   xenforeignmemory_handle *xfmem;
2145   xenevtchn_handle *xe;
2146   xengnttab_handle *xg;
2147   xengnttab_grant_copy_segment_t* seg = NULL;
2148
2149   xs_daemon_open();
2150
2151   xc = xc_interface_open(0, 0, 0);
2152   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2153   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2154   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2155   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
2156
2157   xfmem = xenforeignmemory_open(0, 0);
2158   xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);
2159
2160   xe = xenevtchn_open(0, 0);
2161   xenevtchn_fd(xe);
2162
2163   xg = xengnttab_open(0, 0);
2164   xengnttab_grant_copy(xg, 0, seg);
2165
2166   return 0;
2167 }
2168 EOF
2169         compile_prog "" "$xen_libs $xen_stable_libs"
2170       then
2171       xen_ctrl_version=40800
2172       xen=enabled
2173     elif
2174         cat > $TMPC <<EOF &&
2175 /*
2176  * If we have stable libs the we don't want the libxc compat
2177  * layers, regardless of what CFLAGS we may have been given.
2178  */
2179 #undef XC_WANT_COMPAT_EVTCHN_API
2180 #undef XC_WANT_COMPAT_GNTTAB_API
2181 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
2182 #include <xenctrl.h>
2183 #include <xenstore.h>
2184 #include <xenevtchn.h>
2185 #include <xengnttab.h>
2186 #include <xenforeignmemory.h>
2187 #include <stdint.h>
2188 #include <xen/hvm/hvm_info_table.h>
2189 #if !defined(HVM_MAX_VCPUS)
2190 # error HVM_MAX_VCPUS not defined
2191 #endif
2192 int main(void) {
2193   xc_interface *xc = NULL;
2194   xenforeignmemory_handle *xfmem;
2195   xenevtchn_handle *xe;
2196   xengnttab_handle *xg;
2197
2198   xs_daemon_open();
2199
2200   xc = xc_interface_open(0, 0, 0);
2201   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2202   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2203   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2204   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
2205
2206   xfmem = xenforeignmemory_open(0, 0);
2207   xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);
2208
2209   xe = xenevtchn_open(0, 0);
2210   xenevtchn_fd(xe);
2211
2212   xg = xengnttab_open(0, 0);
2213   xengnttab_map_grant_ref(xg, 0, 0, 0);
2214
2215   return 0;
2216 }
2217 EOF
2218         compile_prog "" "$xen_libs $xen_stable_libs"
2219       then
2220       xen_ctrl_version=40701
2221       xen=enabled
2222
2223     # Xen 4.6
2224     elif
2225         cat > $TMPC <<EOF &&
2226 #include <xenctrl.h>
2227 #include <xenstore.h>
2228 #include <stdint.h>
2229 #include <xen/hvm/hvm_info_table.h>
2230 #if !defined(HVM_MAX_VCPUS)
2231 # error HVM_MAX_VCPUS not defined
2232 #endif
2233 int main(void) {
2234   xc_interface *xc;
2235   xs_daemon_open();
2236   xc = xc_interface_open(0, 0, 0);
2237   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2238   xc_gnttab_open(NULL, 0);
2239   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2240   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2241   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
2242   xc_reserved_device_memory_map(xc, 0, 0, 0, 0, NULL, 0);
2243   return 0;
2244 }
2245 EOF
2246         compile_prog "" "$xen_libs"
2247       then
2248       xen_ctrl_version=40600
2249       xen=enabled
2250
2251     # Xen 4.5
2252     elif
2253         cat > $TMPC <<EOF &&
2254 #include <xenctrl.h>
2255 #include <xenstore.h>
2256 #include <stdint.h>
2257 #include <xen/hvm/hvm_info_table.h>
2258 #if !defined(HVM_MAX_VCPUS)
2259 # error HVM_MAX_VCPUS not defined
2260 #endif
2261 int main(void) {
2262   xc_interface *xc;
2263   xs_daemon_open();
2264   xc = xc_interface_open(0, 0, 0);
2265   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2266   xc_gnttab_open(NULL, 0);
2267   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2268   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2269   xc_hvm_create_ioreq_server(xc, 0, 0, NULL);
2270   return 0;
2271 }
2272 EOF
2273         compile_prog "" "$xen_libs"
2274       then
2275       xen_ctrl_version=40500
2276       xen=enabled
2277
2278     elif
2279         cat > $TMPC <<EOF &&
2280 #include <xenctrl.h>
2281 #include <xenstore.h>
2282 #include <stdint.h>
2283 #include <xen/hvm/hvm_info_table.h>
2284 #if !defined(HVM_MAX_VCPUS)
2285 # error HVM_MAX_VCPUS not defined
2286 #endif
2287 int main(void) {
2288   xc_interface *xc;
2289   xs_daemon_open();
2290   xc = xc_interface_open(0, 0, 0);
2291   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2292   xc_gnttab_open(NULL, 0);
2293   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2294   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2295   return 0;
2296 }
2297 EOF
2298         compile_prog "" "$xen_libs"
2299       then
2300       xen_ctrl_version=40200
2301       xen=enabled
2302
2303     else
2304       if test "$xen" = "enabled" ; then
2305         feature_not_found "xen (unsupported version)" \
2306                           "Install a supported xen (xen 4.2 or newer)"
2307       fi
2308       xen=disabled
2309     fi
2310
2311     if test "$xen" = enabled; then
2312       if test $xen_ctrl_version -ge 40701  ; then
2313         xen_libs="$xen_libs $xen_stable_libs "
2314       fi
2315     fi
2316   fi
2317 fi
2318
2319 ##########################################
2320 # RDMA needs OpenFabrics libraries
2321 if test "$rdma" != "no" ; then
2322   cat > $TMPC <<EOF
2323 #include <rdma/rdma_cma.h>
2324 int main(void) { return 0; }
2325 EOF
2326   rdma_libs="-lrdmacm -libverbs -libumad"
2327   if compile_prog "" "$rdma_libs" ; then
2328     rdma="yes"
2329   else
2330     if test "$rdma" = "yes" ; then
2331         error_exit \
2332             " OpenFabrics librdmacm/libibverbs/libibumad not present." \
2333             " Your options:" \
2334             "  (1) Fast: Install infiniband packages (devel) from your distro." \
2335             "  (2) Cleanest: Install libraries from www.openfabrics.org" \
2336             "  (3) Also: Install softiwarp if you don't have RDMA hardware"
2337     fi
2338     rdma="no"
2339   fi
2340 fi
2341
2342 ##########################################
2343 # PVRDMA detection
2344
2345 cat > $TMPC <<EOF &&
2346 #include <sys/mman.h>
2347
2348 int
2349 main(void)
2350 {
2351     char buf = 0;
2352     void *addr = &buf;
2353     addr = mremap(addr, 0, 1, MREMAP_MAYMOVE | MREMAP_FIXED);
2354
2355     return 0;
2356 }
2357 EOF
2358
2359 if test "$rdma" = "yes" ; then
2360     case "$pvrdma" in
2361     "")
2362         if compile_prog "" ""; then
2363             pvrdma="yes"
2364         else
2365             pvrdma="no"
2366         fi
2367         ;;
2368     "yes")
2369         if ! compile_prog "" ""; then
2370             error_exit "PVRDMA is not supported since mremap is not implemented"
2371         fi
2372         pvrdma="yes"
2373         ;;
2374     "no")
2375         pvrdma="no"
2376         ;;
2377     esac
2378 else
2379     if test "$pvrdma" = "yes" ; then
2380         error_exit "PVRDMA requires rdma suppport"
2381     fi
2382     pvrdma="no"
2383 fi
2384
2385 # Let's see if enhanced reg_mr is supported
2386 if test "$pvrdma" = "yes" ; then
2387
2388 cat > $TMPC <<EOF &&
2389 #include <infiniband/verbs.h>
2390
2391 int
2392 main(void)
2393 {
2394     struct ibv_mr *mr;
2395     struct ibv_pd *pd = NULL;
2396     size_t length = 10;
2397     uint64_t iova = 0;
2398     int access = 0;
2399     void *addr = NULL;
2400
2401     mr = ibv_reg_mr_iova(pd, addr, length, iova, access);
2402
2403     ibv_dereg_mr(mr);
2404
2405     return 0;
2406 }
2407 EOF
2408     if ! compile_prog "" "-libverbs"; then
2409         QEMU_CFLAGS="$QEMU_CFLAGS -DLEGACY_RDMA_REG_MR"
2410     fi
2411 fi
2412
2413 ##########################################
2414 # xfsctl() probe, used for file-posix.c
2415 if test "$xfs" != "no" ; then
2416   cat > $TMPC << EOF
2417 #include <stddef.h>  /* NULL */
2418 #include <xfs/xfs.h>
2419 int main(void)
2420 {
2421     xfsctl(NULL, 0, 0, NULL);
2422     return 0;
2423 }
2424 EOF
2425   if compile_prog "" "" ; then
2426     xfs="yes"
2427   else
2428     if test "$xfs" = "yes" ; then
2429       feature_not_found "xfs" "Install xfsprogs/xfslibs devel"
2430     fi
2431     xfs=no
2432   fi
2433 fi
2434
2435 ##########################################
2436 # plugin linker support probe
2437
2438 if test "$plugins" != "no"; then
2439
2440     #########################################
2441     # See if --dynamic-list is supported by the linker
2442
2443     ld_dynamic_list="no"
2444     cat > $TMPTXT <<EOF
2445 {
2446   foo;
2447 };
2448 EOF
2449
2450         cat > $TMPC <<EOF
2451 #include <stdio.h>
2452 void foo(void);
2453
2454 void foo(void)
2455 {
2456   printf("foo\n");
2457 }
2458
2459 int main(void)
2460 {
2461   foo();
2462   return 0;
2463 }
2464 EOF
2465
2466     if compile_prog "" "-Wl,--dynamic-list=$TMPTXT" ; then
2467         ld_dynamic_list="yes"
2468     fi
2469
2470     #########################################
2471     # See if -exported_symbols_list is supported by the linker
2472
2473     ld_exported_symbols_list="no"
2474     cat > $TMPTXT <<EOF
2475   _foo
2476 EOF
2477
2478     if compile_prog "" "-Wl,-exported_symbols_list,$TMPTXT" ; then
2479         ld_exported_symbols_list="yes"
2480     fi
2481
2482     if test "$ld_dynamic_list" = "no" &&
2483        test "$ld_exported_symbols_list" = "no" ; then
2484         if test "$plugins" = "yes"; then
2485             error_exit \
2486                 "Plugin support requires dynamic linking and specifying a set of symbols " \
2487                 "that are exported to plugins. Unfortunately your linker doesn't " \
2488                 "support the flag (--dynamic-list or -exported_symbols_list) used " \
2489                 "for this purpose."
2490         else
2491             plugins="no"
2492         fi
2493     else
2494         plugins="yes"
2495     fi
2496 fi
2497
2498 ##########################################
2499 # glib support probe
2500
2501 glib_req_ver=2.56
2502 glib_modules=gthread-2.0
2503 if test "$modules" = yes; then
2504     glib_modules="$glib_modules gmodule-export-2.0"
2505 elif test "$plugins" = "yes"; then
2506     glib_modules="$glib_modules gmodule-no-export-2.0"
2507 fi
2508
2509 for i in $glib_modules; do
2510     if $pkg_config --atleast-version=$glib_req_ver $i; then
2511         glib_cflags=$($pkg_config --cflags $i)
2512         glib_libs=$($pkg_config --libs $i)
2513     else
2514         error_exit "glib-$glib_req_ver $i is required to compile QEMU"
2515     fi
2516 done
2517
2518 # This workaround is required due to a bug in pkg-config file for glib as it
2519 # doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
2520
2521 if test "$static" = yes && test "$mingw32" = yes; then
2522     glib_cflags="-DGLIB_STATIC_COMPILATION $glib_cflags"
2523 fi
2524
2525 if ! test "$gio" = "no"; then
2526     pass=no
2527     if $pkg_config --atleast-version=$glib_req_ver gio-2.0; then
2528         gio_cflags=$($pkg_config --cflags gio-2.0)
2529         gio_libs=$($pkg_config --libs gio-2.0)
2530         gdbus_codegen=$($pkg_config --variable=gdbus_codegen gio-2.0)
2531         if ! has "$gdbus_codegen"; then
2532             gdbus_codegen=
2533         fi
2534         # Check that the libraries actually work -- Ubuntu 18.04 ships
2535         # with pkg-config --static --libs data for gio-2.0 that is missing
2536         # -lblkid and will give a link error.
2537         cat > $TMPC <<EOF
2538 #include <gio/gio.h>
2539 int main(void)
2540 {
2541     g_dbus_proxy_new_sync(0, 0, 0, 0, 0, 0, 0, 0);
2542     return 0;
2543 }
2544 EOF
2545         if compile_prog "$gio_cflags" "$gio_libs" ; then
2546             pass=yes
2547         else
2548             pass=no
2549         fi
2550
2551         if test "$pass" = "yes" &&
2552             $pkg_config --atleast-version=$glib_req_ver gio-unix-2.0; then
2553             gio_cflags="$gio_cflags $($pkg_config --cflags gio-unix-2.0)"
2554             gio_libs="$gio_libs $($pkg_config --libs gio-unix-2.0)"
2555         fi
2556     fi
2557
2558     if test "$pass" = "no"; then
2559         if test "$gio" = "yes"; then
2560             feature_not_found "gio" "Install libgio >= 2.0"
2561         else
2562             gio=no
2563         fi
2564     else
2565         gio=yes
2566     fi
2567 fi
2568
2569 # Sanity check that the current size_t matches the
2570 # size that glib thinks it should be. This catches
2571 # problems on multi-arch where people try to build
2572 # 32-bit QEMU while pointing at 64-bit glib headers
2573 cat > $TMPC <<EOF
2574 #include <glib.h>
2575 #include <unistd.h>
2576
2577 #define QEMU_BUILD_BUG_ON(x) \
2578   typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
2579
2580 int main(void) {
2581    QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
2582    return 0;
2583 }
2584 EOF
2585
2586 if ! compile_prog "$glib_cflags" "$glib_libs" ; then
2587     error_exit "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T."\
2588                "You probably need to set PKG_CONFIG_LIBDIR"\
2589                "to point to the right pkg-config files for your"\
2590                "build target"
2591 fi
2592
2593 # Silence clang warnings triggered by glib < 2.57.2
2594 cat > $TMPC << EOF
2595 #include <glib.h>
2596 typedef struct Foo {
2597     int i;
2598 } Foo;
2599 static void foo_free(Foo *f)
2600 {
2601     g_free(f);
2602 }
2603 G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free);
2604 int main(void) { return 0; }
2605 EOF
2606 if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
2607     if cc_has_warning_flag "-Wno-unused-function"; then
2608         glib_cflags="$glib_cflags -Wno-unused-function"
2609         CONFIGURE_CFLAGS="$CONFIGURE_CFLAGS -Wno-unused-function"
2610     fi
2611 fi
2612
2613 ##########################################
2614 # SHA command probe for modules
2615 if test "$modules" = yes; then
2616     shacmd_probe="sha1sum sha1 shasum"
2617     for c in $shacmd_probe; do
2618         if has $c; then
2619             shacmd="$c"
2620             break
2621         fi
2622     done
2623     if test "$shacmd" = ""; then
2624         error_exit "one of the checksum commands is required to enable modules: $shacmd_probe"
2625     fi
2626 fi
2627
2628 ##########################################
2629 # libssh probe
2630 if test "$libssh" != "no" ; then
2631   if $pkg_config --exists "libssh >= 0.8.7"; then
2632     libssh_cflags=$($pkg_config libssh --cflags)
2633     libssh_libs=$($pkg_config libssh --libs)
2634     libssh=yes
2635   else
2636     if test "$libssh" = "yes" ; then
2637       error_exit "libssh required for --enable-libssh"
2638     fi
2639     libssh=no
2640   fi
2641 fi
2642
2643 ##########################################
2644 # TPM emulation is only on POSIX
2645
2646 if test "$tpm" = ""; then
2647   if test "$mingw32" = "yes"; then
2648     tpm=no
2649   else
2650     tpm=yes
2651   fi
2652 elif test "$tpm" = "yes"; then
2653   if test "$mingw32" = "yes" ; then
2654     error_exit "TPM emulation only available on POSIX systems"
2655   fi
2656 fi
2657
2658 ##########################################
2659 # fdt probe
2660
2661 case "$fdt" in
2662   auto | enabled | internal)
2663     # Simpler to always update submodule, even if not needed.
2664     git_submodules="${git_submodules} dtc"
2665     ;;
2666 esac
2667
2668 ##########################################
2669 # opengl probe (for sdl2, gtk)
2670
2671 if test "$opengl" != "no" ; then
2672   epoxy=no
2673   if $pkg_config epoxy; then
2674     cat > $TMPC << EOF
2675 #include <epoxy/egl.h>
2676 int main(void) { return 0; }
2677 EOF
2678     if compile_prog "" "" ; then
2679       epoxy=yes
2680     fi
2681   fi
2682
2683   if test "$epoxy" = "yes" ; then
2684     opengl_cflags="$($pkg_config --cflags epoxy)"
2685     opengl_libs="$($pkg_config --libs epoxy)"
2686     opengl=yes
2687   else
2688     if test "$opengl" = "yes" ; then
2689       feature_not_found "opengl" "Please install epoxy with EGL"
2690     fi
2691     opengl_cflags=""
2692     opengl_libs=""
2693     opengl=no
2694   fi
2695 fi
2696
2697 ##########################################
2698 # libnuma probe
2699
2700 if test "$numa" != "no" ; then
2701   cat > $TMPC << EOF
2702 #include <numa.h>
2703 int main(void) { return numa_available(); }
2704 EOF
2705
2706   if compile_prog "" "-lnuma" ; then
2707     numa=yes
2708     numa_libs="-lnuma"
2709   else
2710     if test "$numa" = "yes" ; then
2711       feature_not_found "numa" "install numactl devel"
2712     fi
2713     numa=no
2714   fi
2715 fi
2716
2717 # check for usbfs
2718 have_usbfs=no
2719 if test "$linux_user" = "yes"; then
2720   cat > $TMPC << EOF
2721 #include <linux/usbdevice_fs.h>
2722
2723 #ifndef USBDEVFS_GET_CAPABILITIES
2724 #error "USBDEVFS_GET_CAPABILITIES undefined"
2725 #endif
2726
2727 #ifndef USBDEVFS_DISCONNECT_CLAIM
2728 #error "USBDEVFS_DISCONNECT_CLAIM undefined"
2729 #endif
2730
2731 int main(void)
2732 {
2733     return 0;
2734 }
2735 EOF
2736   if compile_prog "" ""; then
2737     have_usbfs=yes
2738   fi
2739 fi
2740
2741 ##########################################
2742 # check if we have VSS SDK headers for win
2743
2744 if test "$mingw32" = "yes" && test "$guest_agent" != "no" && \
2745         test "$vss_win32_sdk" != "no" ; then
2746   case "$vss_win32_sdk" in
2747     "")   vss_win32_include="-isystem $source_path" ;;
2748     *\ *) # The SDK is installed in "Program Files" by default, but we cannot
2749           # handle path with spaces. So we symlink the headers into ".sdk/vss".
2750           vss_win32_include="-isystem $source_path/.sdk/vss"
2751           symlink "$vss_win32_sdk/inc" "$source_path/.sdk/vss/inc"
2752           ;;
2753     *)    vss_win32_include="-isystem $vss_win32_sdk"
2754   esac
2755   cat > $TMPC << EOF
2756 #define __MIDL_user_allocate_free_DEFINED__
2757 #include <inc/win2003/vss.h>
2758 int main(void) { return VSS_CTX_BACKUP; }
2759 EOF
2760   if compile_prog "$vss_win32_include" "" ; then
2761     guest_agent_with_vss="yes"
2762     QEMU_CFLAGS="$QEMU_CFLAGS $vss_win32_include"
2763     libs_qga="-lole32 -loleaut32 -lshlwapi -lstdc++ -Wl,--enable-stdcall-fixup $libs_qga"
2764     qga_vss_provider="qga/vss-win32/qga-vss.dll qga/vss-win32/qga-vss.tlb"
2765   else
2766     if test "$vss_win32_sdk" != "" ; then
2767       echo "ERROR: Please download and install Microsoft VSS SDK:"
2768       echo "ERROR:   http://www.microsoft.com/en-us/download/details.aspx?id=23490"
2769       echo "ERROR: On POSIX-systems, you can extract the SDK headers by:"
2770       echo "ERROR:   scripts/extract-vsssdk-headers setup.exe"
2771       echo "ERROR: The headers are extracted in the directory \`inc'."
2772       feature_not_found "VSS support"
2773     fi
2774     guest_agent_with_vss="no"
2775   fi
2776 fi
2777
2778 ##########################################
2779 # lookup Windows platform SDK (if not specified)
2780 # The SDK is needed only to build .tlb (type library) file of guest agent
2781 # VSS provider from the source. It is usually unnecessary because the
2782 # pre-compiled .tlb file is included.
2783
2784 if test "$mingw32" = "yes" && test "$guest_agent" != "no" && \
2785         test "$guest_agent_with_vss" = "yes" ; then
2786   if test -z "$win_sdk"; then
2787     programfiles="$PROGRAMFILES"
2788     test -n "$PROGRAMW6432" && programfiles="$PROGRAMW6432"
2789     if test -n "$programfiles"; then
2790       win_sdk=$(ls -d "$programfiles/Microsoft SDKs/Windows/v"* | tail -1) 2>/dev/null
2791     else
2792       feature_not_found "Windows SDK"
2793     fi
2794   elif test "$win_sdk" = "no"; then
2795     win_sdk=""
2796   fi
2797 fi
2798
2799 ##########################################
2800 # check if mingw environment provides a recent ntddscsi.h
2801 if test "$mingw32" = "yes" && test "$guest_agent" != "no"; then
2802   cat > $TMPC << EOF
2803 #include <windows.h>
2804 #include <ntddscsi.h>
2805 int main(void) {
2806 #if !defined(IOCTL_SCSI_GET_ADDRESS)
2807 #error Missing required ioctl definitions
2808 #endif
2809   SCSI_ADDRESS addr = { .Lun = 0, .TargetId = 0, .PathId = 0 };
2810   return addr.Lun;
2811 }
2812 EOF
2813   if compile_prog "" "" ; then
2814     guest_agent_ntddscsi=yes
2815     libs_qga="-lsetupapi -lcfgmgr32 $libs_qga"
2816   fi
2817 fi
2818
2819 ##########################################
2820 # capstone
2821
2822 case "$capstone" in
2823   auto | enabled | internal)
2824     # Simpler to always update submodule, even if not needed.
2825     git_submodules="${git_submodules} capstone"
2826     ;;
2827 esac
2828
2829 ##########################################
2830 # check and set a backend for coroutine
2831
2832 # We prefer ucontext, but it's not always possible. The fallback
2833 # is sigcontext. On Windows the only valid backend is the Windows
2834 # specific one.
2835
2836 ucontext_works=no
2837 if test "$darwin" != "yes"; then
2838   cat > $TMPC << EOF
2839 #include <ucontext.h>
2840 #ifdef __stub_makecontext
2841 #error Ignoring glibc stub makecontext which will always fail
2842 #endif
2843 int main(void) { makecontext(0, 0, 0); return 0; }
2844 EOF
2845   if compile_prog "" "" ; then
2846     ucontext_works=yes
2847   fi
2848 fi
2849
2850 if test "$coroutine" = ""; then
2851   if test "$mingw32" = "yes"; then
2852     coroutine=win32
2853   elif test "$ucontext_works" = "yes"; then
2854     coroutine=ucontext
2855   else
2856     coroutine=sigaltstack
2857   fi
2858 else
2859   case $coroutine in
2860   windows)
2861     if test "$mingw32" != "yes"; then
2862       error_exit "'windows' coroutine backend only valid for Windows"
2863     fi
2864     # Unfortunately the user visible backend name doesn't match the
2865     # coroutine-*.c filename for this case, so we have to adjust it here.
2866     coroutine=win32
2867     ;;
2868   ucontext)
2869     if test "$ucontext_works" != "yes"; then
2870       feature_not_found "ucontext"
2871     fi
2872     ;;
2873   sigaltstack)
2874     if test "$mingw32" = "yes"; then
2875       error_exit "only the 'windows' coroutine backend is valid for Windows"
2876     fi
2877     ;;
2878   *)
2879     error_exit "unknown coroutine backend $coroutine"
2880     ;;
2881   esac
2882 fi
2883
2884 if test "$coroutine_pool" = ""; then
2885   coroutine_pool=yes
2886 fi
2887
2888 if test "$debug_stack_usage" = "yes"; then
2889   if test "$coroutine_pool" = "yes"; then
2890     echo "WARN: disabling coroutine pool for stack usage debugging"
2891     coroutine_pool=no
2892   fi
2893 fi
2894
2895 ##################################################
2896 # SafeStack
2897
2898
2899 if test "$safe_stack" = "yes"; then
2900 cat > $TMPC << EOF
2901 int main(int argc, char *argv[])
2902 {
2903 #if ! __has_feature(safe_stack)
2904 #error SafeStack Disabled
2905 #endif
2906     return 0;
2907 }
2908 EOF
2909   flag="-fsanitize=safe-stack"
2910   # Check that safe-stack is supported and enabled.
2911   if compile_prog "-Werror $flag" "$flag"; then
2912     # Flag needed both at compilation and at linking
2913     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
2914     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
2915   else
2916     error_exit "SafeStack not supported by your compiler"
2917   fi
2918   if test "$coroutine" != "ucontext"; then
2919     error_exit "SafeStack is only supported by the coroutine backend ucontext"
2920   fi
2921 else
2922 cat > $TMPC << EOF
2923 int main(int argc, char *argv[])
2924 {
2925 #if defined(__has_feature)
2926 #if __has_feature(safe_stack)
2927 #error SafeStack Enabled
2928 #endif
2929 #endif
2930     return 0;
2931 }
2932 EOF
2933 if test "$safe_stack" = "no"; then
2934   # Make sure that safe-stack is disabled
2935   if ! compile_prog "-Werror" ""; then
2936     # SafeStack was already enabled, try to explicitly remove the feature
2937     flag="-fno-sanitize=safe-stack"
2938     if ! compile_prog "-Werror $flag" "$flag"; then
2939       error_exit "Configure cannot disable SafeStack"
2940     fi
2941     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
2942     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
2943   fi
2944 else # "$safe_stack" = ""
2945   # Set safe_stack to yes or no based on pre-existing flags
2946   if compile_prog "-Werror" ""; then
2947     safe_stack="no"
2948   else
2949     safe_stack="yes"
2950     if test "$coroutine" != "ucontext"; then
2951       error_exit "SafeStack is only supported by the coroutine backend ucontext"
2952     fi
2953   fi
2954 fi
2955 fi
2956
2957 ########################################
2958 # check if cpuid.h is usable.
2959
2960 cat > $TMPC << EOF
2961 #include <cpuid.h>
2962 int main(void) {
2963     unsigned a, b, c, d;
2964     int max = __get_cpuid_max(0, 0);
2965
2966     if (max >= 1) {
2967         __cpuid(1, a, b, c, d);
2968     }
2969
2970     if (max >= 7) {
2971         __cpuid_count(7, 0, a, b, c, d);
2972     }
2973
2974     return 0;
2975 }
2976 EOF
2977 if compile_prog "" "" ; then
2978     cpuid_h=yes
2979 fi
2980
2981 ##########################################
2982 # avx2 optimization requirement check
2983 #
2984 # There is no point enabling this if cpuid.h is not usable,
2985 # since we won't be able to select the new routines.
2986
2987 if test "$cpuid_h" = "yes" && test "$avx2_opt" != "no"; then
2988   cat > $TMPC << EOF
2989 #pragma GCC push_options
2990 #pragma GCC target("avx2")
2991 #include <cpuid.h>
2992 #include <immintrin.h>
2993 static int bar(void *a) {
2994     __m256i x = *(__m256i *)a;
2995     return _mm256_testz_si256(x, x);
2996 }
2997 int main(int argc, char *argv[]) { return bar(argv[0]); }
2998 EOF
2999   if compile_object "-Werror" ; then
3000     avx2_opt="yes"
3001   else
3002     avx2_opt="no"
3003   fi
3004 fi
3005
3006 ##########################################
3007 # avx512f optimization requirement check
3008 #
3009 # There is no point enabling this if cpuid.h is not usable,
3010 # since we won't be able to select the new routines.
3011 # by default, it is turned off.
3012 # if user explicitly want to enable it, check environment
3013
3014 if test "$cpuid_h" = "yes" && test "$avx512f_opt" = "yes"; then
3015   cat > $TMPC << EOF
3016 #pragma GCC push_options
3017 #pragma GCC target("avx512f")
3018 #include <cpuid.h>
3019 #include <immintrin.h>
3020 static int bar(void *a) {
3021     __m512i x = *(__m512i *)a;
3022     return _mm512_test_epi64_mask(x, x);
3023 }
3024 int main(int argc, char *argv[])
3025 {
3026         return bar(argv[0]);
3027 }
3028 EOF
3029   if ! compile_object "-Werror" ; then
3030     avx512f_opt="no"
3031   fi
3032 else
3033   avx512f_opt="no"
3034 fi
3035
3036 ########################################
3037 # check if __[u]int128_t is usable.
3038
3039 int128=no
3040 cat > $TMPC << EOF
3041 __int128_t a;
3042 __uint128_t b;
3043 int main (void) {
3044   a = a + b;
3045   b = a * b;
3046   a = a * a;
3047   return 0;
3048 }
3049 EOF
3050 if compile_prog "" "" ; then
3051     int128=yes
3052 fi
3053
3054 #########################################
3055 # See if 128-bit atomic operations are supported.
3056
3057 atomic128=no
3058 if test "$int128" = "yes"; then
3059   cat > $TMPC << EOF
3060 int main(void)
3061 {
3062   unsigned __int128 x = 0, y = 0;
3063   y = __atomic_load(&x, 0);
3064   __atomic_store(&x, y, 0);
3065   __atomic_compare_exchange(&x, &y, x, 0, 0, 0);
3066   return 0;
3067 }
3068 EOF
3069   if compile_prog "" "" ; then
3070     atomic128=yes
3071   fi
3072 fi
3073
3074 cmpxchg128=no
3075 if test "$int128" = yes && test "$atomic128" = no; then
3076   cat > $TMPC << EOF
3077 int main(void)
3078 {
3079   unsigned __int128 x = 0, y = 0;
3080   __sync_val_compare_and_swap_16(&x, y, x);
3081   return 0;
3082 }
3083 EOF
3084   if compile_prog "" "" ; then
3085     cmpxchg128=yes
3086   fi
3087 fi
3088
3089 ########################################
3090 # check if ccache is interfering with
3091 # semantic analysis of macros
3092
3093 unset CCACHE_CPP2
3094 ccache_cpp2=no
3095 cat > $TMPC << EOF
3096 static const int Z = 1;
3097 #define fn() ({ Z; })
3098 #define TAUT(X) ((X) == Z)
3099 #define PAREN(X, Y) (X == Y)
3100 #define ID(X) (X)
3101 int main(int argc, char *argv[])
3102 {
3103     int x = 0, y = 0;
3104     x = ID(x);
3105     x = fn();
3106     fn();
3107     if (PAREN(x, y)) return 0;
3108     if (TAUT(Z)) return 0;
3109     return 0;
3110 }
3111 EOF
3112
3113 if ! compile_object "-Werror"; then
3114     ccache_cpp2=yes
3115 fi
3116
3117 #################################################
3118 # clang does not support glibc + FORTIFY_SOURCE.
3119
3120 if test "$fortify_source" != "no"; then
3121   if echo | $cc -dM -E - | grep __clang__ > /dev/null 2>&1 ; then
3122     fortify_source="no";
3123   elif test -n "$cxx" && has $cxx &&
3124        echo | $cxx -dM -E - | grep __clang__ >/dev/null 2>&1 ; then
3125     fortify_source="no";
3126   else
3127     fortify_source="yes"
3128   fi
3129 fi
3130
3131 ##########################################
3132 # check for usable membarrier system call
3133 if test "$membarrier" = "yes"; then
3134     have_membarrier=no
3135     if test "$mingw32" = "yes" ; then
3136         have_membarrier=yes
3137     elif test "$linux" = "yes" ; then
3138         cat > $TMPC << EOF
3139     #include <linux/membarrier.h>
3140     #include <sys/syscall.h>
3141     #include <unistd.h>
3142     #include <stdlib.h>
3143     int main(void) {
3144         syscall(__NR_membarrier, MEMBARRIER_CMD_QUERY, 0);
3145         syscall(__NR_membarrier, MEMBARRIER_CMD_SHARED, 0);
3146         exit(0);
3147     }
3148 EOF
3149         if compile_prog "" "" ; then
3150             have_membarrier=yes
3151         fi
3152     fi
3153     if test "$have_membarrier" = "no"; then
3154       feature_not_found "membarrier" "membarrier system call not available"
3155     fi
3156 else
3157     # Do not enable it by default even for Mingw32, because it doesn't
3158     # work on Wine.
3159     membarrier=no
3160 fi
3161
3162 ##########################################
3163 # check for usable AF_ALG environment
3164 have_afalg=no
3165 cat > $TMPC << EOF
3166 #include <errno.h>
3167 #include <sys/types.h>
3168 #include <sys/socket.h>
3169 #include <linux/if_alg.h>
3170 int main(void) {
3171     int sock;
3172     sock = socket(AF_ALG, SOCK_SEQPACKET, 0);
3173     return sock;
3174 }
3175 EOF
3176 if compile_prog "" "" ; then
3177     have_afalg=yes
3178 fi
3179 if test "$crypto_afalg" = "yes"
3180 then
3181     if test "$have_afalg" != "yes"
3182     then
3183         error_exit "AF_ALG requested but could not be detected"
3184     fi
3185 fi
3186
3187
3188 ##########################################
3189 # checks for sanitizers
3190
3191 have_asan=no
3192 have_ubsan=no
3193 have_asan_iface_h=no
3194 have_asan_iface_fiber=no
3195
3196 if test "$sanitizers" = "yes" ; then
3197   write_c_skeleton
3198   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" ""; then
3199       have_asan=yes
3200   fi
3201
3202   # we could use a simple skeleton for flags checks, but this also
3203   # detect the static linking issue of ubsan, see also:
3204   # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84285
3205   cat > $TMPC << EOF
3206 #include <stdlib.h>
3207 int main(void) {
3208     void *tmp = malloc(10);
3209     if (tmp != NULL) {
3210         return *(int *)(tmp + 2);
3211     }
3212     return 1;
3213 }
3214 EOF
3215   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=undefined" ""; then
3216       have_ubsan=yes
3217   fi
3218
3219   if check_include "sanitizer/asan_interface.h" ; then
3220       have_asan_iface_h=yes
3221   fi
3222
3223   cat > $TMPC << EOF
3224 #include <sanitizer/asan_interface.h>
3225 int main(void) {
3226   __sanitizer_start_switch_fiber(0, 0, 0);
3227   return 0;
3228 }
3229 EOF
3230   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" "" ; then
3231       have_asan_iface_fiber=yes
3232   fi
3233 fi
3234
3235 # Thread sanitizer is, for now, much noisier than the other sanitizers;
3236 # keep it separate until that is not the case.
3237 if test "$tsan" = "yes" && test "$sanitizers" = "yes"; then
3238   error_exit "TSAN is not supported with other sanitiziers."
3239 fi
3240 have_tsan=no
3241 have_tsan_iface_fiber=no
3242 if test "$tsan" = "yes" ; then
3243   write_c_skeleton
3244   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
3245       have_tsan=yes
3246   fi
3247   cat > $TMPC << EOF
3248 #include <sanitizer/tsan_interface.h>
3249 int main(void) {
3250   __tsan_create_fiber(0);
3251   return 0;
3252 }
3253 EOF
3254   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
3255       have_tsan_iface_fiber=yes
3256   fi
3257 fi
3258
3259 ##########################################
3260 # check for slirp
3261
3262 case "$slirp" in
3263   auto | enabled | internal)
3264     # Simpler to always update submodule, even if not needed.
3265     git_submodules="${git_submodules} slirp"
3266     ;;
3267 esac
3268
3269 # Check for slirp smbd dupport
3270 : ${smbd=${SMBD-/usr/sbin/smbd}}
3271 if test "$slirp_smbd" != "no" ; then
3272   if test "$mingw32" = "yes" ; then
3273     if test "$slirp_smbd" = "yes" ; then
3274       error_exit "Host smbd not supported on this platform."
3275     fi
3276     slirp_smbd=no
3277   else
3278     slirp_smbd=yes
3279   fi
3280 fi
3281
3282 ##########################################
3283 # check for usable __NR_keyctl syscall
3284
3285 if test "$linux" = "yes" ; then
3286
3287     have_keyring=no
3288     cat > $TMPC << EOF
3289 #include <errno.h>
3290 #include <asm/unistd.h>
3291 #include <linux/keyctl.h>
3292 #include <unistd.h>
3293 int main(void) {
3294     return syscall(__NR_keyctl, KEYCTL_READ, 0, NULL, NULL, 0);
3295 }
3296 EOF
3297     if compile_prog "" "" ; then
3298         have_keyring=yes
3299     fi
3300 fi
3301 if test "$secret_keyring" != "no"
3302 then
3303     if test "$have_keyring" = "yes"
3304     then
3305         secret_keyring=yes
3306     else
3307         if test "$secret_keyring" = "yes"
3308         then
3309             error_exit "syscall __NR_keyctl requested, \
3310 but not implemented on your system"
3311         else
3312             secret_keyring=no
3313         fi
3314     fi
3315 fi
3316
3317 ##########################################
3318 # End of CC checks
3319 # After here, no more $cc or $ld runs
3320
3321 write_c_skeleton
3322
3323 if test "$gcov" = "yes" ; then
3324   :
3325 elif test "$fortify_source" = "yes" ; then
3326   QEMU_CFLAGS="-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $QEMU_CFLAGS"
3327   debug=no
3328 fi
3329
3330 case "$ARCH" in
3331 alpha)
3332   # Ensure there's only a single GP
3333   QEMU_CFLAGS="-msmall-data $QEMU_CFLAGS"
3334 ;;
3335 esac
3336
3337 if test "$gprof" = "yes" ; then
3338   QEMU_CFLAGS="-p $QEMU_CFLAGS"
3339   QEMU_LDFLAGS="-p $QEMU_LDFLAGS"
3340 fi
3341
3342 if test "$have_asan" = "yes"; then
3343   QEMU_CFLAGS="-fsanitize=address $QEMU_CFLAGS"
3344   QEMU_LDFLAGS="-fsanitize=address $QEMU_LDFLAGS"
3345   if test "$have_asan_iface_h" = "no" ; then
3346       echo "ASAN build enabled, but ASAN header missing." \
3347            "Without code annotation, the report may be inferior."
3348   elif test "$have_asan_iface_fiber" = "no" ; then
3349       echo "ASAN build enabled, but ASAN header is too old." \
3350            "Without code annotation, the report may be inferior."
3351   fi
3352 fi
3353 if test "$have_tsan" = "yes" ; then
3354   if test "$have_tsan_iface_fiber" = "yes" ; then
3355     QEMU_CFLAGS="-fsanitize=thread $QEMU_CFLAGS"
3356     QEMU_LDFLAGS="-fsanitize=thread $QEMU_LDFLAGS"
3357   else
3358     error_exit "Cannot enable TSAN due to missing fiber annotation interface."
3359   fi
3360 elif test "$tsan" = "yes" ; then
3361   error_exit "Cannot enable TSAN due to missing sanitize thread interface."
3362 fi
3363 if test "$have_ubsan" = "yes"; then
3364   QEMU_CFLAGS="-fsanitize=undefined $QEMU_CFLAGS"
3365   QEMU_LDFLAGS="-fsanitize=undefined $QEMU_LDFLAGS"
3366 fi
3367
3368 ##########################################
3369
3370 # Exclude --warn-common with TSan to suppress warnings from the TSan libraries.
3371 if test "$solaris" = "no" && test "$tsan" = "no"; then
3372     if $ld --version 2>/dev/null | grep "GNU ld" >/dev/null 2>/dev/null ; then
3373         QEMU_LDFLAGS="-Wl,--warn-common $QEMU_LDFLAGS"
3374     fi
3375 fi
3376
3377 # Use ASLR, no-SEH and DEP if available
3378 if test "$mingw32" = "yes" ; then
3379     flags="--no-seh --nxcompat"
3380
3381     # Disable ASLR for debug builds to allow debugging with gdb
3382     if test "$debug" = "no" ; then
3383         flags="--dynamicbase $flags"
3384     fi
3385
3386     for flag in $flags; do
3387         if ld_has $flag ; then
3388             QEMU_LDFLAGS="-Wl,$flag $QEMU_LDFLAGS"
3389         fi
3390     done
3391 fi
3392
3393 # Probe for guest agent support/options
3394
3395 if [ "$guest_agent" != "no" ]; then
3396   if [ "$softmmu" = no -a "$want_tools" = no ] ; then
3397       guest_agent=no
3398   elif [ "$linux" = "yes" -o "$bsd" = "yes" -o "$solaris" = "yes" -o "$mingw32" = "yes" ] ; then
3399       guest_agent=yes
3400   elif [ "$guest_agent" != yes ]; then
3401       guest_agent=no
3402   else
3403       error_exit "Guest agent is not supported on this platform"
3404   fi
3405 fi
3406
3407 # Guest agent Windows MSI package
3408
3409 if test "$QEMU_GA_MANUFACTURER" = ""; then
3410   QEMU_GA_MANUFACTURER=QEMU
3411 fi
3412 if test "$QEMU_GA_DISTRO" = ""; then
3413   QEMU_GA_DISTRO=Linux
3414 fi
3415 if test "$QEMU_GA_VERSION" = ""; then
3416     QEMU_GA_VERSION=$(cat $source_path/VERSION)
3417 fi
3418
3419 QEMU_GA_MSI_MINGW_DLL_PATH="$($pkg_config --variable=prefix glib-2.0)/bin"
3420
3421 # Mac OS X ships with a broken assembler
3422 roms=
3423 if { test "$cpu" = "i386" || test "$cpu" = "x86_64"; } && \
3424         test "$targetos" != "Darwin" && test "$targetos" != "SunOS" && \
3425         test "$targetos" != "Haiku" && test "$softmmu" = yes ; then
3426     # Different host OS linkers have different ideas about the name of the ELF
3427     # emulation. Linux and OpenBSD/amd64 use 'elf_i386'; FreeBSD uses the _fbsd
3428     # variant; OpenBSD/i386 uses the _obsd variant; and Windows uses i386pe.
3429     for emu in elf_i386 elf_i386_fbsd elf_i386_obsd i386pe; do
3430         if "$ld" -verbose 2>&1 | grep -q "^[[:space:]]*$emu[[:space:]]*$"; then
3431             ld_i386_emulation="$emu"
3432             roms="optionrom"
3433             break
3434         fi
3435     done
3436 fi
3437
3438 # Only build s390-ccw bios if we're on s390x and the compiler has -march=z900
3439 # or -march=z10 (which is the lowest architecture level that Clang supports)
3440 if test "$cpu" = "s390x" ; then
3441   write_c_skeleton
3442   compile_prog "-march=z900" ""
3443   has_z900=$?
3444   if [ $has_z900 = 0 ] || compile_object "-march=z10 -msoft-float -Werror"; then
3445     if [ $has_z900 != 0 ]; then
3446       echo "WARNING: Your compiler does not support the z900!"
3447       echo "         The s390-ccw bios will only work with guest CPUs >= z10."
3448     fi
3449     roms="$roms s390-ccw"
3450     # SLOF is required for building the s390-ccw firmware on s390x,
3451     # since it is using the libnet code from SLOF for network booting.
3452     git_submodules="${git_submodules} roms/SLOF"
3453   fi
3454 fi
3455
3456 # Check that the C++ compiler exists and works with the C compiler.
3457 # All the QEMU_CXXFLAGS are based on QEMU_CFLAGS. Keep this at the end to don't miss any other that could be added.
3458 if has $cxx; then
3459     cat > $TMPC <<EOF
3460 int c_function(void);
3461 int main(void) { return c_function(); }
3462 EOF
3463
3464     compile_object
3465
3466     cat > $TMPCXX <<EOF
3467 extern "C" {
3468    int c_function(void);
3469 }
3470 int c_function(void) { return 42; }
3471 EOF
3472
3473     update_cxxflags
3474
3475     if do_cxx $CXXFLAGS $CONFIGURE_CXXFLAGS $QEMU_CXXFLAGS -o $TMPE $TMPCXX $TMPO $QEMU_LDFLAGS; then
3476         # C++ compiler $cxx works ok with C compiler $cc
3477         :
3478     else
3479         echo "C++ compiler $cxx does not work with C compiler $cc"
3480         echo "Disabling C++ specific optional code"
3481         cxx=
3482     fi
3483 else
3484     echo "No C++ compiler available; disabling C++ specific optional code"
3485     cxx=
3486 fi
3487
3488 if !(GIT="$git" "$source_path/scripts/git-submodule.sh" "$git_submodules_action" "$git_submodules"); then
3489     exit 1
3490 fi
3491
3492 config_host_mak="config-host.mak"
3493
3494 echo "# Automatically generated by configure - do not modify" > $config_host_mak
3495 echo >> $config_host_mak
3496
3497 echo all: >> $config_host_mak
3498 echo "GIT=$git" >> $config_host_mak
3499 echo "GIT_SUBMODULES=$git_submodules" >> $config_host_mak
3500 echo "GIT_SUBMODULES_ACTION=$git_submodules_action" >> $config_host_mak
3501
3502 echo "ARCH=$ARCH" >> $config_host_mak
3503
3504 if test "$debug_tcg" = "yes" ; then
3505   echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
3506 fi
3507 if test "$strip_opt" = "yes" ; then
3508   echo "STRIP=${strip}" >> $config_host_mak
3509 fi
3510 if test "$mingw32" = "yes" ; then
3511   echo "CONFIG_WIN32=y" >> $config_host_mak
3512   if test "$guest_agent_with_vss" = "yes" ; then
3513     echo "CONFIG_QGA_VSS=y" >> $config_host_mak
3514     echo "QGA_VSS_PROVIDER=$qga_vss_provider" >> $config_host_mak
3515     echo "WIN_SDK=\"$win_sdk\"" >> $config_host_mak
3516   fi
3517   if test "$guest_agent_ntddscsi" = "yes" ; then
3518     echo "CONFIG_QGA_NTDDSCSI=y" >> $config_host_mak
3519   fi
3520   echo "QEMU_GA_MSI_MINGW_DLL_PATH=${QEMU_GA_MSI_MINGW_DLL_PATH}" >> $config_host_mak
3521   echo "QEMU_GA_MANUFACTURER=${QEMU_GA_MANUFACTURER}" >> $config_host_mak
3522   echo "QEMU_GA_DISTRO=${QEMU_GA_DISTRO}" >> $config_host_mak
3523   echo "QEMU_GA_VERSION=${QEMU_GA_VERSION}" >> $config_host_mak
3524 else
3525   echo "CONFIG_POSIX=y" >> $config_host_mak
3526 fi
3527
3528 if test "$linux" = "yes" ; then
3529   echo "CONFIG_LINUX=y" >> $config_host_mak
3530 fi
3531
3532 if test "$darwin" = "yes" ; then
3533   echo "CONFIG_DARWIN=y" >> $config_host_mak
3534 fi
3535
3536 if test "$solaris" = "yes" ; then
3537   echo "CONFIG_SOLARIS=y" >> $config_host_mak
3538 fi
3539 if test "$haiku" = "yes" ; then
3540   echo "CONFIG_HAIKU=y" >> $config_host_mak
3541 fi
3542 if test "$static" = "yes" ; then
3543   echo "CONFIG_STATIC=y" >> $config_host_mak
3544 fi
3545 if test "$profiler" = "yes" ; then
3546   echo "CONFIG_PROFILER=y" >> $config_host_mak
3547 fi
3548 if test "$want_tools" = "yes" ; then
3549   echo "CONFIG_TOOLS=y" >> $config_host_mak
3550 fi
3551 if test "$guest_agent" = "yes" ; then
3552   echo "CONFIG_GUEST_AGENT=y" >> $config_host_mak
3553 fi
3554 if test "$slirp_smbd" = "yes" ; then
3555   echo "CONFIG_SLIRP_SMBD=y" >> $config_host_mak
3556   echo "CONFIG_SMBD_COMMAND=\"$smbd\"" >> $config_host_mak
3557 fi
3558 if test "$l2tpv3" = "yes" ; then
3559   echo "CONFIG_L2TPV3=y" >> $config_host_mak
3560 fi
3561 if test "$gprof" = "yes" ; then
3562   echo "CONFIG_GPROF=y" >> $config_host_mak
3563 fi
3564 echo "CONFIG_BDRV_RW_WHITELIST=$block_drv_rw_whitelist" >> $config_host_mak
3565 echo "CONFIG_BDRV_RO_WHITELIST=$block_drv_ro_whitelist" >> $config_host_mak
3566 if test "$block_drv_whitelist_tools" = "yes" ; then
3567   echo "CONFIG_BDRV_WHITELIST_TOOLS=y" >> $config_host_mak
3568 fi
3569 if test "$xfs" = "yes" ; then
3570   echo "CONFIG_XFS=y" >> $config_host_mak
3571 fi
3572 qemu_version=$(head $source_path/VERSION)
3573 echo "PKGVERSION=$pkgversion" >>$config_host_mak
3574 echo "SRC_PATH=$source_path" >> $config_host_mak
3575 echo "TARGET_DIRS=$target_list" >> $config_host_mak
3576 if test "$modules" = "yes"; then
3577   # $shacmd can generate a hash started with digit, which the compiler doesn't
3578   # like as an symbol. So prefix it with an underscore
3579   echo "CONFIG_STAMP=_$( (echo $qemu_version; echo $pkgversion; cat $0) | $shacmd - | cut -f1 -d\ )" >> $config_host_mak
3580   echo "CONFIG_MODULES=y" >> $config_host_mak
3581 fi
3582 if test "$module_upgrades" = "yes"; then
3583   echo "CONFIG_MODULE_UPGRADES=y" >> $config_host_mak
3584 fi
3585 if test "$have_usbfs" = "yes" ; then
3586   echo "CONFIG_USBFS=y" >> $config_host_mak
3587 fi
3588 if test "$gio" = "yes" ; then
3589     echo "CONFIG_GIO=y" >> $config_host_mak
3590     echo "GIO_CFLAGS=$gio_cflags" >> $config_host_mak
3591     echo "GIO_LIBS=$gio_libs" >> $config_host_mak
3592 fi
3593 if test "$gdbus_codegen" != "" ; then
3594     echo "GDBUS_CODEGEN=$gdbus_codegen" >> $config_host_mak
3595 fi
3596 echo "CONFIG_TLS_PRIORITY=\"$tls_priority\"" >> $config_host_mak
3597
3598 if test "$xen" = "enabled" ; then
3599   echo "CONFIG_XEN_BACKEND=y" >> $config_host_mak
3600   echo "CONFIG_XEN_CTRL_INTERFACE_VERSION=$xen_ctrl_version" >> $config_host_mak
3601   echo "XEN_CFLAGS=$xen_cflags" >> $config_host_mak
3602   echo "XEN_LIBS=$xen_libs" >> $config_host_mak
3603 fi
3604 if test "$vhost_scsi" = "yes" ; then
3605   echo "CONFIG_VHOST_SCSI=y" >> $config_host_mak
3606 fi
3607 if test "$vhost_net" = "yes" ; then
3608   echo "CONFIG_VHOST_NET=y" >> $config_host_mak
3609 fi
3610 if test "$vhost_net_user" = "yes" ; then
3611   echo "CONFIG_VHOST_NET_USER=y" >> $config_host_mak
3612 fi
3613 if test "$vhost_net_vdpa" = "yes" ; then
3614   echo "CONFIG_VHOST_NET_VDPA=y" >> $config_host_mak
3615 fi
3616 if test "$vhost_crypto" = "yes" ; then
3617   echo "CONFIG_VHOST_CRYPTO=y" >> $config_host_mak
3618 fi
3619 if test "$vhost_vsock" = "yes" ; then
3620   echo "CONFIG_VHOST_VSOCK=y" >> $config_host_mak
3621   if test "$vhost_user" = "yes" ; then
3622     echo "CONFIG_VHOST_USER_VSOCK=y" >> $config_host_mak
3623   fi
3624 fi
3625 if test "$vhost_kernel" = "yes" ; then
3626   echo "CONFIG_VHOST_KERNEL=y" >> $config_host_mak
3627 fi
3628 if test "$vhost_user" = "yes" ; then
3629   echo "CONFIG_VHOST_USER=y" >> $config_host_mak
3630 fi
3631 if test "$vhost_vdpa" = "yes" ; then
3632   echo "CONFIG_VHOST_VDPA=y" >> $config_host_mak
3633 fi
3634 if test "$vhost_user_fs" = "yes" ; then
3635   echo "CONFIG_VHOST_USER_FS=y" >> $config_host_mak
3636 fi
3637 if test "$membarrier" = "yes" ; then
3638   echo "CONFIG_MEMBARRIER=y" >> $config_host_mak
3639 fi
3640 if test "$tcg" = "enabled" -a "$tcg_interpreter" = "true" ; then
3641   echo "CONFIG_TCG_INTERPRETER=y" >> $config_host_mak
3642 fi
3643
3644 if test "$opengl" = "yes" ; then
3645   echo "CONFIG_OPENGL=y" >> $config_host_mak
3646   echo "OPENGL_CFLAGS=$opengl_cflags" >> $config_host_mak
3647   echo "OPENGL_LIBS=$opengl_libs" >> $config_host_mak
3648 fi
3649
3650 if test "$avx2_opt" = "yes" ; then
3651   echo "CONFIG_AVX2_OPT=y" >> $config_host_mak
3652 fi
3653
3654 if test "$avx512f_opt" = "yes" ; then
3655   echo "CONFIG_AVX512F_OPT=y" >> $config_host_mak
3656 fi
3657
3658 # XXX: suppress that
3659 if [ "$bsd" = "yes" ] ; then
3660   echo "CONFIG_BSD=y" >> $config_host_mak
3661 fi
3662
3663 if test "$qom_cast_debug" = "yes" ; then
3664   echo "CONFIG_QOM_CAST_DEBUG=y" >> $config_host_mak
3665 fi
3666
3667 echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
3668 if test "$coroutine_pool" = "yes" ; then
3669   echo "CONFIG_COROUTINE_POOL=1" >> $config_host_mak
3670 else
3671   echo "CONFIG_COROUTINE_POOL=0" >> $config_host_mak
3672 fi
3673
3674 if test "$debug_stack_usage" = "yes" ; then
3675   echo "CONFIG_DEBUG_STACK_USAGE=y" >> $config_host_mak
3676 fi
3677
3678 if test "$crypto_afalg" = "yes" ; then
3679   echo "CONFIG_AF_ALG=y" >> $config_host_mak
3680 fi
3681
3682 if test "$have_asan_iface_fiber" = "yes" ; then
3683     echo "CONFIG_ASAN_IFACE_FIBER=y" >> $config_host_mak
3684 fi
3685
3686 if test "$have_tsan" = "yes" && test "$have_tsan_iface_fiber" = "yes" ; then
3687     echo "CONFIG_TSAN=y" >> $config_host_mak
3688 fi
3689
3690 if test "$cpuid_h" = "yes" ; then
3691   echo "CONFIG_CPUID_H=y" >> $config_host_mak
3692 fi
3693
3694 if test "$int128" = "yes" ; then
3695   echo "CONFIG_INT128=y" >> $config_host_mak
3696 fi
3697
3698 if test "$atomic128" = "yes" ; then
3699   echo "CONFIG_ATOMIC128=y" >> $config_host_mak
3700 fi
3701
3702 if test "$cmpxchg128" = "yes" ; then
3703   echo "CONFIG_CMPXCHG128=y" >> $config_host_mak
3704 fi
3705
3706 if test "$libssh" = "yes" ; then
3707   echo "CONFIG_LIBSSH=y" >> $config_host_mak
3708   echo "LIBSSH_CFLAGS=$libssh_cflags" >> $config_host_mak
3709   echo "LIBSSH_LIBS=$libssh_libs" >> $config_host_mak
3710 fi
3711
3712 if test "$live_block_migration" = "yes" ; then
3713   echo "CONFIG_LIVE_BLOCK_MIGRATION=y" >> $config_host_mak
3714 fi
3715
3716 if test "$tpm" = "yes"; then
3717   echo 'CONFIG_TPM=y' >> $config_host_mak
3718 fi
3719
3720 if test "$rdma" = "yes" ; then
3721   echo "CONFIG_RDMA=y" >> $config_host_mak
3722   echo "RDMA_LIBS=$rdma_libs" >> $config_host_mak
3723 fi
3724
3725 if test "$pvrdma" = "yes" ; then
3726   echo "CONFIG_PVRDMA=y" >> $config_host_mak
3727 fi
3728
3729 if test "$replication" = "yes" ; then
3730   echo "CONFIG_REPLICATION=y" >> $config_host_mak
3731 fi
3732
3733 if test "$debug_mutex" = "yes" ; then
3734   echo "CONFIG_DEBUG_MUTEX=y" >> $config_host_mak
3735 fi
3736
3737 if test "$bochs" = "yes" ; then
3738   echo "CONFIG_BOCHS=y" >> $config_host_mak
3739 fi
3740 if test "$cloop" = "yes" ; then
3741   echo "CONFIG_CLOOP=y" >> $config_host_mak
3742 fi
3743 if test "$dmg" = "yes" ; then
3744   echo "CONFIG_DMG=y" >> $config_host_mak
3745 fi
3746 if test "$qcow1" = "yes" ; then
3747   echo "CONFIG_QCOW1=y" >> $config_host_mak
3748 fi
3749 if test "$vdi" = "yes" ; then
3750   echo "CONFIG_VDI=y" >> $config_host_mak
3751 fi
3752 if test "$vvfat" = "yes" ; then
3753   echo "CONFIG_VVFAT=y" >> $config_host_mak
3754 fi
3755 if test "$qed" = "yes" ; then
3756   echo "CONFIG_QED=y" >> $config_host_mak
3757 fi
3758 if test "$parallels" = "yes" ; then
3759   echo "CONFIG_PARALLELS=y" >> $config_host_mak
3760 fi
3761
3762 if test "$plugins" = "yes" ; then
3763     echo "CONFIG_PLUGIN=y" >> $config_host_mak
3764     # Copy the export object list to the build dir
3765     if test "$ld_dynamic_list" = "yes" ; then
3766         echo "CONFIG_HAS_LD_DYNAMIC_LIST=yes" >> $config_host_mak
3767         ld_symbols=qemu-plugins-ld.symbols
3768         cp "$source_path/plugins/qemu-plugins.symbols" $ld_symbols
3769     elif test "$ld_exported_symbols_list" = "yes" ; then
3770         echo "CONFIG_HAS_LD_EXPORTED_SYMBOLS_LIST=yes" >> $config_host_mak
3771         ld64_symbols=qemu-plugins-ld64.symbols
3772         echo "# Automatically generated by configure - do not modify" > $ld64_symbols
3773         grep 'qemu_' "$source_path/plugins/qemu-plugins.symbols" | sed 's/;//g' | \
3774             sed -E 's/^[[:space:]]*(.*)/_\1/' >> $ld64_symbols
3775     else
3776         error_exit \
3777             "If \$plugins=yes, either \$ld_dynamic_list or " \
3778             "\$ld_exported_symbols_list should have been set to 'yes'."
3779     fi
3780 fi
3781
3782 if test -n "$gdb_bin"; then
3783     gdb_version=$($gdb_bin --version | head -n 1)
3784     if version_ge ${gdb_version##* } 9.1; then
3785         echo "HAVE_GDB_BIN=$gdb_bin" >> $config_host_mak
3786     fi
3787 fi
3788
3789 if test "$secret_keyring" = "yes" ; then
3790   echo "CONFIG_SECRET_KEYRING=y" >> $config_host_mak
3791 fi
3792
3793 echo "ROMS=$roms" >> $config_host_mak
3794 echo "MAKE=$make" >> $config_host_mak
3795 echo "PYTHON=$python" >> $config_host_mak
3796 echo "GENISOIMAGE=$genisoimage" >> $config_host_mak
3797 echo "MESON=$meson" >> $config_host_mak
3798 echo "NINJA=$ninja" >> $config_host_mak
3799 echo "CC=$cc" >> $config_host_mak
3800 echo "HOST_CC=$host_cc" >> $config_host_mak
3801 if $iasl -h > /dev/null 2>&1; then
3802   echo "CONFIG_IASL=$iasl" >> $config_host_mak
3803 fi
3804 echo "AR=$ar" >> $config_host_mak
3805 echo "AS=$as" >> $config_host_mak
3806 echo "CCAS=$ccas" >> $config_host_mak
3807 echo "CPP=$cpp" >> $config_host_mak
3808 echo "OBJCOPY=$objcopy" >> $config_host_mak
3809 echo "LD=$ld" >> $config_host_mak
3810 echo "CFLAGS_NOPIE=$CFLAGS_NOPIE" >> $config_host_mak
3811 echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak
3812 echo "QEMU_CXXFLAGS=$QEMU_CXXFLAGS" >> $config_host_mak
3813 echo "GLIB_CFLAGS=$glib_cflags" >> $config_host_mak
3814 echo "GLIB_LIBS=$glib_libs" >> $config_host_mak
3815 echo "QEMU_LDFLAGS=$QEMU_LDFLAGS" >> $config_host_mak
3816 echo "LD_I386_EMULATION=$ld_i386_emulation" >> $config_host_mak
3817 echo "EXESUF=$EXESUF" >> $config_host_mak
3818 echo "LIBS_QGA=$libs_qga" >> $config_host_mak
3819
3820 if test "$rng_none" = "yes"; then
3821   echo "CONFIG_RNG_NONE=y" >> $config_host_mak
3822 fi
3823
3824 # use included Linux headers
3825 if test "$linux" = "yes" ; then
3826   mkdir -p linux-headers
3827   case "$cpu" in
3828   i386|x86_64|x32)
3829     linux_arch=x86
3830     ;;
3831   ppc|ppc64|ppc64le)
3832     linux_arch=powerpc
3833     ;;
3834   s390x)
3835     linux_arch=s390
3836     ;;
3837   aarch64)
3838     linux_arch=arm64
3839     ;;
3840   mips64)
3841     linux_arch=mips
3842     ;;
3843   *)
3844     # For most CPUs the kernel architecture name and QEMU CPU name match.
3845     linux_arch="$cpu"
3846     ;;
3847   esac
3848     # For non-KVM architectures we will not have asm headers
3849     if [ -e "$source_path/linux-headers/asm-$linux_arch" ]; then
3850       symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
3851     fi
3852 fi
3853
3854 for target in $target_list; do
3855     target_dir="$target"
3856     target_name=$(echo $target | cut -d '-' -f 1)
3857     mkdir -p $target_dir
3858     case $target in
3859         *-user) symlink "../qemu-$target_name" "$target_dir/qemu-$target_name" ;;
3860         *) symlink "../qemu-system-$target_name" "$target_dir/qemu-system-$target_name" ;;
3861     esac
3862 done
3863
3864 echo "CONFIG_QEMU_INTERP_PREFIX=$interp_prefix" | sed 's/%M/@0@/' >> $config_host_mak
3865 if test "$default_targets" = "yes"; then
3866   echo "CONFIG_DEFAULT_TARGETS=y" >> $config_host_mak
3867 fi
3868
3869 if test "$numa" = "yes"; then
3870   echo "CONFIG_NUMA=y" >> $config_host_mak
3871   echo "NUMA_LIBS=$numa_libs" >> $config_host_mak
3872 fi
3873
3874 if test "$ccache_cpp2" = "yes"; then
3875   echo "export CCACHE_CPP2=y" >> $config_host_mak
3876 fi
3877
3878 if test "$safe_stack" = "yes"; then
3879   echo "CONFIG_SAFESTACK=y" >> $config_host_mak
3880 fi
3881
3882 # If we're using a separate build tree, set it up now.
3883 # DIRS are directories which we simply mkdir in the build tree;
3884 # LINKS are things to symlink back into the source tree
3885 # (these can be both files and directories).
3886 # Caution: do not add files or directories here using wildcards. This
3887 # will result in problems later if a new file matching the wildcard is
3888 # added to the source tree -- nothing will cause configure to be rerun
3889 # so the build tree will be missing the link back to the new file, and
3890 # tests might fail. Prefer to keep the relevant files in their own
3891 # directory and symlink the directory instead.
3892 # UNLINK is used to remove symlinks from older development versions
3893 # that might get into the way when doing "git update" without doing
3894 # a "make distclean" in between.
3895 DIRS="tests tests/tcg tests/qapi-schema tests/qtest/libqos"
3896 DIRS="$DIRS tests/qtest tests/qemu-iotests tests/vm tests/fp tests/qgraph"
3897 DIRS="$DIRS docs docs/interop fsdev scsi"
3898 DIRS="$DIRS pc-bios/optionrom pc-bios/s390-ccw"
3899 DIRS="$DIRS roms/seabios"
3900 DIRS="$DIRS contrib/plugins/"
3901 LINKS="Makefile"
3902 LINKS="$LINKS tests/tcg/Makefile.target"
3903 LINKS="$LINKS pc-bios/optionrom/Makefile"
3904 LINKS="$LINKS pc-bios/s390-ccw/Makefile"
3905 LINKS="$LINKS roms/seabios/Makefile"
3906 LINKS="$LINKS pc-bios/qemu-icon.bmp"
3907 LINKS="$LINKS .gdbinit scripts" # scripts needed by relative path in .gdbinit
3908 LINKS="$LINKS tests/acceptance tests/data"
3909 LINKS="$LINKS tests/qemu-iotests/check"
3910 LINKS="$LINKS python"
3911 LINKS="$LINKS contrib/plugins/Makefile "
3912 UNLINK="pc-bios/keymaps"
3913 for bios_file in \
3914     $source_path/pc-bios/*.bin \
3915     $source_path/pc-bios/*.elf \
3916     $source_path/pc-bios/*.lid \
3917     $source_path/pc-bios/*.rom \
3918     $source_path/pc-bios/*.dtb \
3919     $source_path/pc-bios/*.img \
3920     $source_path/pc-bios/openbios-* \
3921     $source_path/pc-bios/u-boot.* \
3922     $source_path/pc-bios/edk2-*.fd.bz2 \
3923     $source_path/pc-bios/palcode-* \
3924     $source_path/pc-bios/qemu_vga.ndrv
3925
3926 do
3927     LINKS="$LINKS pc-bios/$(basename $bios_file)"
3928 done
3929 mkdir -p $DIRS
3930 for f in $LINKS ; do
3931     if [ -e "$source_path/$f" ]; then
3932         symlink "$source_path/$f" "$f"
3933     fi
3934 done
3935 for f in $UNLINK ; do
3936     if [ -L "$f" ]; then
3937         rm -f "$f"
3938     fi
3939 done
3940
3941 (for i in $cross_cc_vars; do
3942   export $i
3943 done
3944 export target_list source_path use_containers ARCH
3945 $source_path/tests/tcg/configure.sh)
3946
3947 # temporary config to build submodules
3948 for rom in seabios; do
3949     config_mak=roms/$rom/config.mak
3950     echo "# Automatically generated by configure - do not modify" > $config_mak
3951     echo "SRC_PATH=$source_path/roms/$rom" >> $config_mak
3952     echo "AS=$as" >> $config_mak
3953     echo "CCAS=$ccas" >> $config_mak
3954     echo "CC=$cc" >> $config_mak
3955     echo "BCC=bcc" >> $config_mak
3956     echo "CPP=$cpp" >> $config_mak
3957     echo "OBJCOPY=objcopy" >> $config_mak
3958     echo "IASL=$iasl" >> $config_mak
3959     echo "LD=$ld" >> $config_mak
3960     echo "RANLIB=$ranlib" >> $config_mak
3961 done
3962
3963 if test "$skip_meson" = no; then
3964   cross="config-meson.cross.new"
3965   meson_quote() {
3966     echo "'$(echo $* | sed "s/ /','/g")'"
3967   }
3968
3969   echo "# Automatically generated by configure - do not modify" > $cross
3970   echo "[properties]" >> $cross
3971
3972   # unroll any custom device configs
3973   for a in $device_archs; do
3974       eval "c=\$devices_${a}"
3975       echo "${a}-softmmu = '$c'" >> $cross
3976   done
3977
3978   test -z "$cxx" && echo "link_language = 'c'" >> $cross
3979   echo "[built-in options]" >> $cross
3980   echo "c_args = [${CFLAGS:+$(meson_quote $CFLAGS)}]" >> $cross
3981   echo "cpp_args = [${CXXFLAGS:+$(meson_quote $CXXFLAGS)}]" >> $cross
3982   echo "c_link_args = [${LDFLAGS:+$(meson_quote $LDFLAGS)}]" >> $cross
3983   echo "cpp_link_args = [${LDFLAGS:+$(meson_quote $LDFLAGS)}]" >> $cross
3984   echo "[binaries]" >> $cross
3985   echo "c = [$(meson_quote $cc $CPU_CFLAGS)]" >> $cross
3986   test -n "$cxx" && echo "cpp = [$(meson_quote $cxx $CPU_CFLAGS)]" >> $cross
3987   test -n "$objcc" && echo "objc = [$(meson_quote $objcc $CPU_CFLAGS)]" >> $cross
3988   echo "ar = [$(meson_quote $ar)]" >> $cross
3989   echo "nm = [$(meson_quote $nm)]" >> $cross
3990   echo "pkgconfig = [$(meson_quote $pkg_config_exe)]" >> $cross
3991   echo "ranlib = [$(meson_quote $ranlib)]" >> $cross
3992   if has $sdl2_config; then
3993     echo "sdl2-config = [$(meson_quote $sdl2_config)]" >> $cross
3994   fi
3995   echo "strip = [$(meson_quote $strip)]" >> $cross
3996   echo "windres = [$(meson_quote $windres)]" >> $cross
3997   if test "$cross_compile" = "yes"; then
3998     cross_arg="--cross-file config-meson.cross"
3999     echo "[host_machine]" >> $cross
4000     if test "$mingw32" = "yes" ; then
4001         echo "system = 'windows'" >> $cross
4002     fi
4003     if test "$linux" = "yes" ; then
4004         echo "system = 'linux'" >> $cross
4005     fi
4006     if test "$darwin" = "yes" ; then
4007         echo "system = 'darwin'" >> $cross
4008     fi
4009     case "$ARCH" in
4010         i386)
4011             echo "cpu_family = 'x86'" >> $cross
4012             ;;
4013         x86_64|x32)
4014             echo "cpu_family = 'x86_64'" >> $cross
4015             ;;
4016         ppc64le)
4017             echo "cpu_family = 'ppc64'" >> $cross
4018             ;;
4019         *)
4020             echo "cpu_family = '$ARCH'" >> $cross
4021             ;;
4022     esac
4023     echo "cpu = '$cpu'" >> $cross
4024     if test "$bigendian" = "yes" ; then
4025         echo "endian = 'big'" >> $cross
4026     else
4027         echo "endian = 'little'" >> $cross
4028     fi
4029   else
4030     cross_arg="--native-file config-meson.cross"
4031   fi
4032   mv $cross config-meson.cross
4033
4034   rm -rf meson-private meson-info meson-logs
4035   run_meson() {
4036     NINJA=$ninja $meson setup \
4037         --prefix "$prefix" \
4038         --libdir "$libdir" \
4039         --libexecdir "$libexecdir" \
4040         --bindir "$bindir" \
4041         --includedir "$includedir" \
4042         --datadir "$datadir" \
4043         --mandir "$mandir" \
4044         --sysconfdir "$sysconfdir" \
4045         --localedir "$localedir" \
4046         --localstatedir "$local_statedir" \
4047         -Daudio_drv_list=$audio_drv_list \
4048         -Ddefault_devices=$default_devices \
4049         -Ddocdir="$docdir" \
4050         -Dqemu_firmwarepath="$firmwarepath" \
4051         -Dqemu_suffix="$qemu_suffix" \
4052         -Dsphinx_build="$sphinx_build" \
4053         -Dtrace_file="$trace_file" \
4054         -Doptimization=$(if test "$debug" = yes; then echo 0; else echo 2; fi) \
4055         -Ddebug=$(if test "$debug_info" = yes; then echo true; else echo false; fi) \
4056         -Dwerror=$(if test "$werror" = yes; then echo true; else echo false; fi) \
4057         -Dstrip=$(if test "$strip_opt" = yes; then echo true; else echo false; fi) \
4058         -Db_pie=$(if test "$pie" = yes; then echo true; else echo false; fi) \
4059         -Db_coverage=$(if test "$gcov" = yes; then echo true; else echo false; fi) \
4060         -Db_lto=$lto -Dcfi=$cfi -Dtcg=$tcg -Dxen=$xen \
4061         -Dcapstone=$capstone -Dfdt=$fdt -Dslirp=$slirp \
4062         $(test -n "${LIB_FUZZING_ENGINE+xxx}" && echo "-Dfuzzing_engine=$LIB_FUZZING_ENGINE") \
4063         $(if test "$default_feature" = no; then echo "-Dauto_features=disabled"; fi) \
4064         "$@" $cross_arg "$PWD" "$source_path"
4065   }
4066   eval run_meson $meson_options
4067   if test "$?" -ne 0 ; then
4068       error_exit "meson setup failed"
4069   fi
4070 else
4071   if test -f meson-private/cmd_line.txt; then
4072     # Adjust old command line options whose type was changed
4073     # Avoids having to use "setup --wipe" when Meson is upgraded
4074     perl -i -ne '
4075       s/^gettext = true$/gettext = auto/;
4076       s/^gettext = false$/gettext = disabled/;
4077       /^b_staticpic/ && next;
4078       print;' meson-private/cmd_line.txt
4079   fi
4080 fi
4081
4082 if test -n "${deprecated_features}"; then
4083     echo "Warning, deprecated features enabled."
4084     echo "Please see docs/about/deprecated.rst"
4085     echo "  features: ${deprecated_features}"
4086 fi
4087
4088 # Create list of config switches that should be poisoned in common code...
4089 # but filter out CONFIG_TCG and CONFIG_USER_ONLY which are special.
4090 target_configs_h=$(ls *-config-devices.h *-config-target.h 2>/dev/null)
4091 if test -n "$target_configs_h" ; then
4092     sed -n -e '/CONFIG_TCG/d' -e '/CONFIG_USER_ONLY/d' \
4093         -e '/^#define / { s///; s/ .*//; s/^/#pragma GCC poison /p; }' \
4094         $target_configs_h | sort -u > config-poison.h
4095 else
4096     :> config-poison.h
4097 fi
4098
4099 # Save the configure command line for later reuse.
4100 cat <<EOD >config.status
4101 #!/bin/sh
4102 # Generated by configure.
4103 # Run this file to recreate the current configuration.
4104 # Compiler output produced by configure, useful for debugging
4105 # configure, is in config.log if it exists.
4106 EOD
4107
4108 preserve_env() {
4109     envname=$1
4110
4111     eval envval=\$$envname
4112
4113     if test -n "$envval"
4114     then
4115         echo "$envname='$envval'" >> config.status
4116         echo "export $envname" >> config.status
4117     else
4118         echo "unset $envname" >> config.status
4119     fi
4120 }
4121
4122 # Preserve various env variables that influence what
4123 # features/build target configure will detect
4124 preserve_env AR
4125 preserve_env AS
4126 preserve_env CC
4127 preserve_env CPP
4128 preserve_env CXX
4129 preserve_env INSTALL
4130 preserve_env LD
4131 preserve_env LD_LIBRARY_PATH
4132 preserve_env LIBTOOL
4133 preserve_env MAKE
4134 preserve_env NM
4135 preserve_env OBJCOPY
4136 preserve_env PATH
4137 preserve_env PKG_CONFIG
4138 preserve_env PKG_CONFIG_LIBDIR
4139 preserve_env PKG_CONFIG_PATH
4140 preserve_env PYTHON
4141 preserve_env SDL2_CONFIG
4142 preserve_env SMBD
4143 preserve_env STRIP
4144 preserve_env WINDRES
4145
4146 printf "exec" >>config.status
4147 for i in "$0" "$@"; do
4148   test "$i" = --skip-meson || printf " %s" "$(quote_sh "$i")" >>config.status
4149 done
4150 echo ' "$@"' >>config.status
4151 chmod +x config.status
4152
4153 rm -r "$TMPDIR1"