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" "$@"
 146 }
 147
 148 do_cxx() {
 149     do_compiler "$cxx" "$@"
 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=gnu99/-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 have_backend () {
 220     echo "$trace_backends" | grep "$1" >/dev/null
 221 }
 222
 223 glob() {
 224     eval test -z '"${1#'"$2"'}"'
 225 }
 226
 227 ld_has() {
 228     $ld --help 2>/dev/null | grep ".$1" >/dev/null 2>&1
 229 }
 230
 231 if printf %s\\n "$source_path" "$PWD" | grep -q "[[:space:]:]";
 232 then
 233   error_exit "main directory cannot contain spaces nor colons"
 234 fi
 235
 236 # default parameters
 237 cpu=""
 238 iasl="iasl"
 239 interp_prefix="/usr/gnemul/qemu-%M"
 240 static="no"
 241 cross_compile="no"
 242 cross_prefix=""
 243 audio_drv_list=""
 244 block_drv_rw_whitelist=""
 245 block_drv_ro_whitelist=""
 246 host_cc="cc"
 247 audio_win_int=""
 248 libs_qga=""
 249 debug_info="yes"
 250 lto="false"
 251 stack_protector=""
 252 safe_stack=""
 253 use_containers="yes"
 254 gdb_bin=$(command -v "gdb-multiarch" || command -v "gdb")
 255
 256 if test -e "$source_path/.git"
 257 then
 258     git_submodules_action="update"
 259     git_submodules="ui/keycodemapdb"
 260     git_submodules="$git_submodules tests/fp/berkeley-testfloat-3"
 261     git_submodules="$git_submodules tests/fp/berkeley-softfloat-3"
 262 else
 263     git_submodules_action="ignore"
 264     git_submodules=""
 265
 266     if ! test -f "$source_path/ui/keycodemapdb/README"
 267     then
 268         echo
 269         echo "ERROR: missing file $source_path/ui/keycodemapdb/README"
 270         echo
 271         echo "This is not a GIT checkout but module content appears to"
 272         echo "be missing. Do not use 'git archive' or GitHub download links"
 273         echo "to acquire QEMU source archives. Non-GIT builds are only"
 274         echo "supported with source archives linked from:"
 275         echo
 276         echo "  https://www.qemu.org/download/#source"
 277         echo
 278         echo "Developers working with GIT can use scripts/archive-source.sh"
 279         echo "if they need to create valid source archives."
 280         echo
 281         exit 1
 282     fi
 283 fi
 284 git="git"
 285
 286 # Don't accept a target_list environment variable.
 287 unset target_list
 288 unset target_list_exclude
 289
 290 # Default value for a variable defining feature "foo".
 291 #  * foo="no"  feature will only be used if --enable-foo arg is given
 292 #  * foo=""    feature will be searched for, and if found, will be used
 293 #              unless --disable-foo is given
 294 #  * foo="yes" this value will only be set by --enable-foo flag.
 295 #              feature will searched for,
 296 #              if not found, configure exits with error
 297 #
 298 # Always add --enable-foo and --disable-foo command line args.
 299 # Distributions want to ensure that several features are compiled in, and it
 300 # is impossible without a --enable-foo that exits if a feature is not found.
 301
 302 default_feature=""
 303 # parse CC options second
 304 for opt do
 305   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 306   case "$opt" in
 307       --without-default-features)
 308           default_feature="no"
 309   ;;
 310   esac
 311 done
 312
 313 brlapi="auto"
 314 curl="auto"
 315 iconv="auto"
 316 curses="auto"
 317 docs="auto"
 318 fdt="auto"
 319 netmap="no"
 320 sdl="auto"
 321 sdl_image="auto"
 322 coreaudio="auto"
 323 virtiofsd="auto"
 324 virtfs="auto"
 325 libudev="auto"
 326 mpath="auto"
 327 vnc="enabled"
 328 sparse="auto"
 329 vde="$default_feature"
 330 vnc_sasl="auto"
 331 vnc_jpeg="auto"
 332 vnc_png="auto"
 333 xkbcommon="auto"
 334 xen="$default_feature"
 335 xen_ctrl_version="$default_feature"
 336 xen_pci_passthrough="auto"
 337 linux_aio="$default_feature"
 338 linux_io_uring="$default_feature"
 339 cap_ng="auto"
 340 attr="auto"
 341 xfs="$default_feature"
 342 tcg="enabled"
 343 membarrier="$default_feature"
 344 vhost_net="$default_feature"
 345 vhost_crypto="$default_feature"
 346 vhost_scsi="$default_feature"
 347 vhost_vsock="$default_feature"
 348 vhost_user="no"
 349 vhost_user_blk_server="auto"
 350 vhost_user_fs="$default_feature"
 351 kvm="auto"
 352 hax="auto"
 353 hvf="auto"
 354 whpx="auto"
 355 rdma="$default_feature"
 356 pvrdma="$default_feature"
 357 gprof="no"
 358 debug_tcg="no"
 359 debug="no"
 360 sanitizers="no"
 361 tsan="no"
 362 fortify_source="$default_feature"
 363 strip_opt="yes"
 364 tcg_interpreter="false"
 365 bigendian="no"
 366 mingw32="no"
 367 gcov="no"
 368 EXESUF="$default_feature"
 369 HOST_DSOSUF=".so"
 370 modules="no"
 371 module_upgrades="no"
 372 prefix="/usr/local"
 373 qemu_suffix="qemu"
 374 slirp="auto"
 375 oss_lib=""
 376 bsd="no"
 377 linux="no"
 378 solaris="no"
 379 profiler="no"
 380 cocoa="auto"
 381 softmmu="yes"
 382 linux_user="no"
 383 bsd_user="no"
 384 blobs="true"
 385 pkgversion=""
 386 pie=""
 387 qom_cast_debug="yes"
 388 trace_backends="log"
 389 trace_file="trace"
 390 spice="$default_feature"
 391 rbd="auto"
 392 smartcard="$default_feature"
 393 u2f="auto"
 394 libusb="$default_feature"
 395 usb_redir="$default_feature"
 396 opengl="$default_feature"
 397 cpuid_h="no"
 398 avx2_opt="$default_feature"
 399 capstone="auto"
 400 lzo="auto"
 401 snappy="auto"
 402 bzip2="auto"
 403 lzfse="auto"
 404 zstd="auto"
 405 guest_agent="$default_feature"
 406 guest_agent_with_vss="no"
 407 guest_agent_ntddscsi="no"
 408 guest_agent_msi="auto"
 409 vss_win32_sdk="$default_feature"
 410 win_sdk="no"
 411 want_tools="$default_feature"
 412 libiscsi="auto"
 413 libnfs="auto"
 414 coroutine=""
 415 coroutine_pool="$default_feature"
 416 debug_stack_usage="no"
 417 crypto_afalg="no"
 418 cfi="false"
 419 cfi_debug="false"
 420 seccomp="auto"
 421 glusterfs="auto"
 422 gtk="auto"
 423 tls_priority="NORMAL"
 424 gnutls="$default_feature"
 425 nettle="$default_feature"
 426 nettle_xts="no"
 427 gcrypt="$default_feature"
 428 gcrypt_hmac="no"
 429 gcrypt_xts="no"
 430 qemu_private_xts="yes"
 431 auth_pam="$default_feature"
 432 vte="$default_feature"
 433 virglrenderer="$default_feature"
 434 tpm="$default_feature"
 435 libssh="$default_feature"
 436 live_block_migration=${default_feature:-yes}
 437 numa="$default_feature"
 438 tcmalloc="no"
 439 jemalloc="no"
 440 replication=${default_feature:-yes}
 441 bochs=${default_feature:-yes}
 442 cloop=${default_feature:-yes}
 443 dmg=${default_feature:-yes}
 444 qcow1=${default_feature:-yes}
 445 vdi=${default_feature:-yes}
 446 vvfat=${default_feature:-yes}
 447 qed=${default_feature:-yes}
 448 parallels=${default_feature:-yes}
 449 sheepdog="no"
 450 libxml2="$default_feature"
 451 debug_mutex="no"
 452 libpmem="$default_feature"
 453 default_devices="true"
 454 plugins="no"
 455 fuzzing="no"
 456 rng_none="no"
 457 secret_keyring="$default_feature"
 458 libdaxctl="$default_feature"
 459 meson=""
 460 ninja=""
 461 skip_meson=no
 462 gettext="auto"
 463 fuse="auto"
 464 fuse_lseek="auto"
 465 multiprocess="auto"
 466
 467 malloc_trim="auto"
 468 gio="$default_feature"
 469
 470 # parse CC options second
 471 for opt do
 472   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 473   case "$opt" in
 474   --cross-prefix=*) cross_prefix="$optarg"
 475                     cross_compile="yes"
 476   ;;
 477   --cc=*) CC="$optarg"
 478   ;;
 479   --cxx=*) CXX="$optarg"
 480   ;;
 481   --cpu=*) cpu="$optarg"
 482   ;;
 483   --extra-cflags=*) QEMU_CFLAGS="$QEMU_CFLAGS $optarg"
 484                     QEMU_LDFLAGS="$QEMU_LDFLAGS $optarg"
 485   ;;
 486   --extra-cxxflags=*) QEMU_CXXFLAGS="$QEMU_CXXFLAGS $optarg"
 487   ;;
 488   --extra-ldflags=*) QEMU_LDFLAGS="$QEMU_LDFLAGS $optarg"
 489                      EXTRA_LDFLAGS="$optarg"
 490   ;;
 491   --enable-debug-info) debug_info="yes"
 492   ;;
 493   --disable-debug-info) debug_info="no"
 494   ;;
 495   --cross-cc-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-cc-FOO option"
 496   ;;
 497   --cross-cc-cflags-*) cc_arch=${opt#--cross-cc-flags-}; cc_arch=${cc_arch%%=*}
 498                       eval "cross_cc_cflags_${cc_arch}=\$optarg"
 499                       cross_cc_vars="$cross_cc_vars cross_cc_cflags_${cc_arch}"
 500   ;;
 501   --cross-cc-*) cc_arch=${opt#--cross-cc-}; cc_arch=${cc_arch%%=*}
 502                 cc_archs="$cc_archs $cc_arch"
 503                 eval "cross_cc_${cc_arch}=\$optarg"
 504                 cross_cc_vars="$cross_cc_vars cross_cc_${cc_arch}"
 505   ;;
 506   esac
 507 done
 508 # OS specific
 509 # Using uname is really, really broken.  Once we have the right set of checks
 510 # we can eliminate its usage altogether.
 511
 512 # Preferred compiler:
 513 #  ${CC} (if set)
 514 #  ${cross_prefix}gcc (if cross-prefix specified)
 515 #  system compiler
 516 if test -z "${CC}${cross_prefix}"; then
 517   cc="$host_cc"
 518 else
 519   cc="${CC-${cross_prefix}gcc}"
 520 fi
 521
 522 if test -z "${CXX}${cross_prefix}"; then
 523   cxx="c++"
 524 else
 525   cxx="${CXX-${cross_prefix}g++}"
 526 fi
 527
 528 ar="${AR-${cross_prefix}ar}"
 529 as="${AS-${cross_prefix}as}"
 530 ccas="${CCAS-$cc}"
 531 cpp="${CPP-$cc -E}"
 532 objcopy="${OBJCOPY-${cross_prefix}objcopy}"
 533 ld="${LD-${cross_prefix}ld}"
 534 ranlib="${RANLIB-${cross_prefix}ranlib}"
 535 nm="${NM-${cross_prefix}nm}"
 536 strip="${STRIP-${cross_prefix}strip}"
 537 windres="${WINDRES-${cross_prefix}windres}"
 538 pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
 539 query_pkg_config() {
 540     "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
 541 }
 542 pkg_config=query_pkg_config
 543 sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"
 544
 545 # If the user hasn't specified ARFLAGS, default to 'rv', just as make does.
 546 ARFLAGS="${ARFLAGS-rv}"
 547
 548 # default flags for all hosts
 549 # We use -fwrapv to tell the compiler that we require a C dialect where
 550 # left shift of signed integers is well defined and has the expected
 551 # 2s-complement style results. (Both clang and gcc agree that it
 552 # provides these semantics.)
 553 QEMU_CFLAGS="-fno-strict-aliasing -fno-common -fwrapv $QEMU_CFLAGS"
 554 QEMU_CFLAGS="-Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
 555 QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
 556 QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
 557
 558 # Flags that are needed during configure but later taken care of by Meson
 559 CONFIGURE_CFLAGS="-std=gnu99 -Wall"
 560 CONFIGURE_LDFLAGS=
 561
 562
 563 check_define() {
 564 cat > $TMPC <<EOF
 565 #if !defined($1)
 566 #error $1 not defined
 567 #endif
 568 int main(void) { return 0; }
 569 EOF
 570   compile_object
 571 }
 572
 573 check_include() {
 574 cat > $TMPC <<EOF
 575 #include <$1>
 576 int main(void) { return 0; }
 577 EOF
 578   compile_object
 579 }
 580
 581 write_c_skeleton() {
 582     cat > $TMPC <<EOF
 583 int main(void) { return 0; }
 584 EOF
 585 }
 586
 587 write_c_fuzzer_skeleton() {
 588     cat > $TMPC <<EOF
 589 #include <stdint.h>
 590 #include <sys/types.h>
 591 int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
 592 int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { return 0; }
 593 EOF
 594 }
 595
 596 if check_define __linux__ ; then
 597   targetos="Linux"
 598 elif check_define _WIN32 ; then
 599   targetos='MINGW32'
 600 elif check_define __OpenBSD__ ; then
 601   targetos='OpenBSD'
 602 elif check_define __sun__ ; then
 603   targetos='SunOS'
 604 elif check_define __HAIKU__ ; then
 605   targetos='Haiku'
 606 elif check_define __FreeBSD__ ; then
 607   targetos='FreeBSD'
 608 elif check_define __FreeBSD_kernel__ && check_define __GLIBC__; then
 609   targetos='GNU/kFreeBSD'
 610 elif check_define __DragonFly__ ; then
 611   targetos='DragonFly'
 612 elif check_define __NetBSD__; then
 613   targetos='NetBSD'
 614 elif check_define __APPLE__; then
 615   targetos='Darwin'
 616 else
 617   # This is a fatal error, but don't report it yet, because we
 618   # might be going to just print the --help text, or it might
 619   # be the result of a missing compiler.
 620   targetos='bogus'
 621 fi
 622
 623 # Some host OSes need non-standard checks for which CPU to use.
 624 # Note that these checks are broken for cross-compilation: if you're
 625 # cross-compiling to one of these OSes then you'll need to specify
 626 # the correct CPU with the --cpu option.
 627 case $targetos in
 628 Darwin)
 629   HOST_DSOSUF=".dylib"
 630   ;;
 631 SunOS)
 632   # $(uname -m) returns i86pc even on an x86_64 box, so default based on isainfo
 633   if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then
 634     cpu="x86_64"
 635   fi
 636 esac
 637
 638 if test ! -z "$cpu" ; then
 639   # command line argument
 640   :
 641 elif check_define __i386__ ; then
 642   cpu="i386"
 643 elif check_define __x86_64__ ; then
 644   if check_define __ILP32__ ; then
 645     cpu="x32"
 646   else
 647     cpu="x86_64"
 648   fi
 649 elif check_define __sparc__ ; then
 650   if check_define __arch64__ ; then
 651     cpu="sparc64"
 652   else
 653     cpu="sparc"
 654   fi
 655 elif check_define _ARCH_PPC ; then
 656   if check_define _ARCH_PPC64 ; then
 657     if check_define _LITTLE_ENDIAN ; then
 658       cpu="ppc64le"
 659     else
 660       cpu="ppc64"
 661     fi
 662   else
 663     cpu="ppc"
 664   fi
 665 elif check_define __mips__ ; then
 666   cpu="mips"
 667 elif check_define __s390__ ; then
 668   if check_define __s390x__ ; then
 669     cpu="s390x"
 670   else
 671     cpu="s390"
 672   fi
 673 elif check_define __riscv ; then
 674   if check_define _LP64 ; then
 675     cpu="riscv64"
 676   else
 677     cpu="riscv32"
 678   fi
 679 elif check_define __arm__ ; then
 680   cpu="arm"
 681 elif check_define __aarch64__ ; then
 682   cpu="aarch64"
 683 else
 684   cpu=$(uname -m)
 685 fi
 686
 687 ARCH=
 688 # Normalise host CPU name and set ARCH.
 689 # Note that this case should only have supported host CPUs, not guests.
 690 case "$cpu" in
 691   ppc|ppc64|s390x|sparc64|x32|riscv32|riscv64)
 692   ;;
 693   ppc64le)
 694     ARCH="ppc64"
 695   ;;
 696   i386|i486|i586|i686|i86pc|BePC)
 697     cpu="i386"
 698   ;;
 699   x86_64|amd64)
 700     cpu="x86_64"
 701   ;;
 702   armv*b|armv*l|arm)
 703     cpu="arm"
 704   ;;
 705   aarch64)
 706     cpu="aarch64"
 707   ;;
 708   mips*)
 709     cpu="mips"
 710   ;;
 711   sparc|sun4[cdmuv])
 712     cpu="sparc"
 713   ;;
 714   *)
 715     # This will result in either an error or falling back to TCI later
 716     ARCH=unknown
 717   ;;
 718 esac
 719 if test -z "$ARCH"; then
 720   ARCH="$cpu"
 721 fi
 722
 723 # OS specific
 724
 725 case $targetos in
 726 MINGW32*)
 727   mingw32="yes"
 728   audio_possible_drivers="dsound sdl"
 729   if check_include dsound.h; then
 730     audio_drv_list="dsound"
 731   else
 732     audio_drv_list=""
 733   fi
 734   supported_os="yes"
 735   pie="no"
 736 ;;
 737 GNU/kFreeBSD)
 738   bsd="yes"
 739   audio_drv_list="oss try-sdl"
 740   audio_possible_drivers="oss sdl pa"
 741 ;;
 742 FreeBSD)
 743   bsd="yes"
 744   make="${MAKE-gmake}"
 745   audio_drv_list="oss try-sdl"
 746   audio_possible_drivers="oss sdl pa"
 747   # needed for kinfo_getvmmap(3) in libutil.h
 748   netmap=""  # enable netmap autodetect
 749 ;;
 750 DragonFly)
 751   bsd="yes"
 752   make="${MAKE-gmake}"
 753   audio_drv_list="oss try-sdl"
 754   audio_possible_drivers="oss sdl pa"
 755 ;;
 756 NetBSD)
 757   bsd="yes"
 758   make="${MAKE-gmake}"
 759   audio_drv_list="oss try-sdl"
 760   audio_possible_drivers="oss sdl"
 761   oss_lib="-lossaudio"
 762 ;;
 763 OpenBSD)
 764   bsd="yes"
 765   make="${MAKE-gmake}"
 766   audio_drv_list="try-sdl"
 767   audio_possible_drivers="sdl"
 768 ;;
 769 Darwin)
 770   bsd="yes"
 771   darwin="yes"
 772   audio_drv_list="try-coreaudio try-sdl"
 773   audio_possible_drivers="coreaudio sdl"
 774   # Disable attempts to use ObjectiveC features in os/object.h since they
 775   # won't work when we're compiling with gcc as a C compiler.
 776   QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
 777 ;;
 778 SunOS)
 779   solaris="yes"
 780   make="${MAKE-gmake}"
 781   smbd="${SMBD-/usr/sfw/sbin/smbd}"
 782   if test -f /usr/include/sys/soundcard.h ; then
 783     audio_drv_list="oss try-sdl"
 784   fi
 785   audio_possible_drivers="oss sdl"
 786 # needed for CMSG_ macros in sys/socket.h
 787   QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
 788 # needed for TIOCWIN* defines in termios.h
 789   QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
 790 ;;
 791 Haiku)
 792   haiku="yes"
 793   QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -D_BSD_SOURCE $QEMU_CFLAGS"
 794 ;;
 795 Linux)
 796   audio_drv_list="try-pa oss"
 797   audio_possible_drivers="oss alsa sdl pa"
 798   linux="yes"
 799   linux_user="yes"
 800   vhost_user=${default_feature:-yes}
 801 ;;
 802 esac
 803
 804 if [ "$bsd" = "yes" ] ; then
 805   if [ "$darwin" != "yes" ] ; then
 806     bsd_user="yes"
 807   fi
 808 fi
 809
 810 : ${make=${MAKE-make}}
 811
 812 # We prefer python 3.x. A bare 'python' is traditionally
 813 # python 2.x, but some distros have it as python 3.x, so
 814 # we check that too
 815 python=
 816 explicit_python=no
 817 for binary in "${PYTHON-python3}" python
 818 do
 819     if has "$binary"
 820     then
 821         python=$(command -v "$binary")
 822         break
 823     fi
 824 done
 825
 826
 827 # Check for ancillary tools used in testing
 828 genisoimage=
 829 for binary in genisoimage mkisofs
 830 do
 831     if has $binary
 832     then
 833         genisoimage=$(command -v "$binary")
 834         break
 835     fi
 836 done
 837
 838 : ${smbd=${SMBD-/usr/sbin/smbd}}
 839
 840 # Default objcc to clang if available, otherwise use CC
 841 if has clang; then
 842   objcc=clang
 843 else
 844   objcc="$cc"
 845 fi
 846
 847 if test "$mingw32" = "yes" ; then
 848   EXESUF=".exe"
 849   HOST_DSOSUF=".dll"
 850   # MinGW needs -mthreads for TLS and macro _MT.
 851   CONFIGURE_CFLAGS="-mthreads $CONFIGURE_CFLAGS"
 852   write_c_skeleton;
 853   prefix="/qemu"
 854   qemu_suffix=""
 855   libs_qga="-lws2_32 -lwinmm -lpowrprof -lwtsapi32 -lwininet -liphlpapi -lnetapi32 $libs_qga"
 856 fi
 857
 858 werror=""
 859
 860 for opt do
 861   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 862   case "$opt" in
 863   --help|-h) show_help=yes
 864   ;;
 865   --version|-V) exec cat $source_path/VERSION
 866   ;;
 867   --prefix=*) prefix="$optarg"
 868   ;;
 869   --interp-prefix=*) interp_prefix="$optarg"
 870   ;;
 871   --cross-prefix=*)
 872   ;;
 873   --cc=*)
 874   ;;
 875   --host-cc=*) host_cc="$optarg"
 876   ;;
 877   --cxx=*)
 878   ;;
 879   --iasl=*) iasl="$optarg"
 880   ;;
 881   --objcc=*) objcc="$optarg"
 882   ;;
 883   --make=*) make="$optarg"
 884   ;;
 885   --install=*)
 886   ;;
 887   --python=*) python="$optarg" ; explicit_python=yes
 888   ;;
 889   --sphinx-build=*) sphinx_build="$optarg"
 890   ;;
 891   --skip-meson) skip_meson=yes
 892   ;;
 893   --meson=*) meson="$optarg"
 894   ;;
 895   --ninja=*) ninja="$optarg"
 896   ;;
 897   --smbd=*) smbd="$optarg"
 898   ;;
 899   --extra-cflags=*)
 900   ;;
 901   --extra-cxxflags=*)
 902   ;;
 903   --extra-ldflags=*)
 904   ;;
 905   --enable-debug-info)
 906   ;;
 907   --disable-debug-info)
 908   ;;
 909   --cross-cc-*)
 910   ;;
 911   --enable-modules)
 912       modules="yes"
 913   ;;
 914   --disable-modules)
 915       modules="no"
 916   ;;
 917   --disable-module-upgrades) module_upgrades="no"
 918   ;;
 919   --enable-module-upgrades) module_upgrades="yes"
 920   ;;
 921   --cpu=*)
 922   ;;
 923   --target-list=*) target_list="$optarg"
 924                    if test "$target_list_exclude"; then
 925                        error_exit "Can't mix --target-list with --target-list-exclude"
 926                    fi
 927   ;;
 928   --target-list-exclude=*) target_list_exclude="$optarg"
 929                    if test "$target_list"; then
 930                        error_exit "Can't mix --target-list-exclude with --target-list"
 931                    fi
 932   ;;
 933   --enable-trace-backends=*) trace_backends="$optarg"
 934   ;;
 935   # XXX: backwards compatibility
 936   --enable-trace-backend=*) trace_backends="$optarg"
 937   ;;
 938   --with-trace-file=*) trace_file="$optarg"
 939   ;;
 940   --with-default-devices) default_devices="true"
 941   ;;
 942   --without-default-devices) default_devices="false"
 943   ;;
 944   --without-default-features) # processed above
 945   ;;
 946   --enable-gprof) gprof="yes"
 947   ;;
 948   --enable-gcov) gcov="yes"
 949   ;;
 950   --static)
 951     static="yes"
 952     QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
 953   ;;
 954   --mandir=*) mandir="$optarg"
 955   ;;
 956   --bindir=*) bindir="$optarg"
 957   ;;
 958   --libdir=*) libdir="$optarg"
 959   ;;
 960   --libexecdir=*) libexecdir="$optarg"
 961   ;;
 962   --includedir=*) includedir="$optarg"
 963   ;;
 964   --datadir=*) datadir="$optarg"
 965   ;;
 966   --with-suffix=*) qemu_suffix="$optarg"
 967   ;;
 968   --docdir=*) docdir="$optarg"
 969   ;;
 970   --localedir=*) localedir="$optarg"
 971   ;;
 972   --sysconfdir=*) sysconfdir="$optarg"
 973   ;;
 974   --localstatedir=*) local_statedir="$optarg"
 975   ;;
 976   --firmwarepath=*) firmwarepath="$optarg"
 977   ;;
 978   --host=*|--build=*|\
 979   --disable-dependency-tracking|\
 980   --sbindir=*|--sharedstatedir=*|\
 981   --oldincludedir=*|--datarootdir=*|--infodir=*|\
 982   --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
 983     # These switches are silently ignored, for compatibility with
 984     # autoconf-generated configure scripts. This allows QEMU's
 985     # configure to be used by RPM and similar macros that set
 986     # lots of directory switches by default.
 987   ;;
 988   --disable-sdl) sdl="disabled"
 989   ;;
 990   --enable-sdl) sdl="enabled"
 991   ;;
 992   --disable-sdl-image) sdl_image="disabled"
 993   ;;
 994   --enable-sdl-image) sdl_image="enabled"
 995   ;;
 996   --disable-qom-cast-debug) qom_cast_debug="no"
 997   ;;
 998   --enable-qom-cast-debug) qom_cast_debug="yes"
 999   ;;
1000   --disable-virtfs) virtfs="disabled"
1001   ;;
1002   --enable-virtfs) virtfs="enabled"
1003   ;;
1004   --disable-libudev) libudev="disabled"
1005   ;;
1006   --enable-libudev) libudev="enabled"
1007   ;;
1008   --disable-virtiofsd) virtiofsd="disabled"
1009   ;;
1010   --enable-virtiofsd) virtiofsd="enabled"
1011   ;;
1012   --disable-mpath) mpath="disabled"
1013   ;;
1014   --enable-mpath) mpath="enabled"
1015   ;;
1016   --disable-vnc) vnc="disabled"
1017   ;;
1018   --enable-vnc) vnc="enabled"
1019   ;;
1020   --disable-gettext) gettext="disabled"
1021   ;;
1022   --enable-gettext) gettext="enabled"
1023   ;;
1024   --oss-lib=*) oss_lib="$optarg"
1025   ;;
1026   --audio-drv-list=*) audio_drv_list="$optarg"
1027   ;;
1028   --block-drv-rw-whitelist=*|--block-drv-whitelist=*) block_drv_rw_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
1029   ;;
1030   --block-drv-ro-whitelist=*) block_drv_ro_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
1031   ;;
1032   --enable-debug-tcg) debug_tcg="yes"
1033   ;;
1034   --disable-debug-tcg) debug_tcg="no"
1035   ;;
1036   --enable-debug)
1037       # Enable debugging options that aren't excessively noisy
1038       debug_tcg="yes"
1039       debug_mutex="yes"
1040       debug="yes"
1041       strip_opt="no"
1042       fortify_source="no"
1043   ;;
1044   --enable-sanitizers) sanitizers="yes"
1045   ;;
1046   --disable-sanitizers) sanitizers="no"
1047   ;;
1048   --enable-tsan) tsan="yes"
1049   ;;
1050   --disable-tsan) tsan="no"
1051   ;;
1052   --enable-sparse) sparse="enabled"
1053   ;;
1054   --disable-sparse) sparse="disabled"
1055   ;;
1056   --disable-strip) strip_opt="no"
1057   ;;
1058   --disable-vnc-sasl) vnc_sasl="disabled"
1059   ;;
1060   --enable-vnc-sasl) vnc_sasl="enabled"
1061   ;;
1062   --disable-vnc-jpeg) vnc_jpeg="disabled"
1063   ;;
1064   --enable-vnc-jpeg) vnc_jpeg="enabled"
1065   ;;
1066   --disable-vnc-png) vnc_png="disabled"
1067   ;;
1068   --enable-vnc-png) vnc_png="enabled"
1069   ;;
1070   --disable-slirp) slirp="disabled"
1071   ;;
1072   --enable-slirp) slirp="enabled"
1073   ;;
1074   --enable-slirp=git) slirp="internal"
1075   ;;
1076   --enable-slirp=system) slirp="system"
1077   ;;
1078   --disable-vde) vde="no"
1079   ;;
1080   --enable-vde) vde="yes"
1081   ;;
1082   --disable-netmap) netmap="no"
1083   ;;
1084   --enable-netmap) netmap="yes"
1085   ;;
1086   --disable-xen) xen="disabled"
1087   ;;
1088   --enable-xen) xen="enabled"
1089   ;;
1090   --disable-xen-pci-passthrough) xen_pci_passthrough="disabled"
1091   ;;
1092   --enable-xen-pci-passthrough) xen_pci_passthrough="enabled"
1093   ;;
1094   --disable-brlapi) brlapi="disabled"
1095   ;;
1096   --enable-brlapi) brlapi="enabled"
1097   ;;
1098   --disable-kvm) kvm="disabled"
1099   ;;
1100   --enable-kvm) kvm="enabled"
1101   ;;
1102   --disable-hax) hax="disabled"
1103   ;;
1104   --enable-hax) hax="enabled"
1105   ;;
1106   --disable-hvf) hvf="disabled"
1107   ;;
1108   --enable-hvf) hvf="enabled"
1109   ;;
1110   --disable-whpx) whpx="disabled"
1111   ;;
1112   --enable-whpx) whpx="enabled"
1113   ;;
1114   --disable-tcg-interpreter) tcg_interpreter="false"
1115   ;;
1116   --enable-tcg-interpreter) tcg_interpreter="true"
1117   ;;
1118   --disable-cap-ng)  cap_ng="disabled"
1119   ;;
1120   --enable-cap-ng) cap_ng="enabled"
1121   ;;
1122   --disable-tcg) tcg="disabled"
1123   ;;
1124   --enable-tcg) tcg="enabled"
1125   ;;
1126   --disable-malloc-trim) malloc_trim="disabled"
1127   ;;
1128   --enable-malloc-trim) malloc_trim="enabled"
1129   ;;
1130   --disable-spice) spice="no"
1131   ;;
1132   --enable-spice) spice="yes"
1133   ;;
1134   --disable-libiscsi) libiscsi="disabled"
1135   ;;
1136   --enable-libiscsi) libiscsi="enabled"
1137   ;;
1138   --disable-libnfs) libnfs="disabled"
1139   ;;
1140   --enable-libnfs) libnfs="enabled"
1141   ;;
1142   --enable-profiler) profiler="yes"
1143   ;;
1144   --disable-cocoa) cocoa="disabled"
1145   ;;
1146   --enable-cocoa) cocoa="enabled"
1147   ;;
1148   --disable-system) softmmu="no"
1149   ;;
1150   --enable-system) softmmu="yes"
1151   ;;
1152   --disable-user)
1153       linux_user="no" ;
1154       bsd_user="no" ;
1155   ;;
1156   --enable-user) ;;
1157   --disable-linux-user) linux_user="no"
1158   ;;
1159   --enable-linux-user) linux_user="yes"
1160   ;;
1161   --disable-bsd-user) bsd_user="no"
1162   ;;
1163   --enable-bsd-user) bsd_user="yes"
1164   ;;
1165   --enable-pie) pie="yes"
1166   ;;
1167   --disable-pie) pie="no"
1168   ;;
1169   --enable-werror) werror="yes"
1170   ;;
1171   --disable-werror) werror="no"
1172   ;;
1173   --enable-lto) lto="true"
1174   ;;
1175   --disable-lto) lto="false"
1176   ;;
1177   --enable-stack-protector) stack_protector="yes"
1178   ;;
1179   --disable-stack-protector) stack_protector="no"
1180   ;;
1181   --enable-safe-stack) safe_stack="yes"
1182   ;;
1183   --disable-safe-stack) safe_stack="no"
1184   ;;
1185   --enable-cfi)
1186       cfi="true";
1187       lto="true";
1188   ;;
1189   --disable-cfi) cfi="false"
1190   ;;
1191   --enable-cfi-debug) cfi_debug="true"
1192   ;;
1193   --disable-cfi-debug) cfi_debug="false"
1194   ;;
1195   --disable-curses) curses="disabled"
1196   ;;
1197   --enable-curses) curses="enabled"
1198   ;;
1199   --disable-iconv) iconv="disabled"
1200   ;;
1201   --enable-iconv) iconv="enabled"
1202   ;;
1203   --disable-curl) curl="disabled"
1204   ;;
1205   --enable-curl) curl="enabled"
1206   ;;
1207   --disable-fdt) fdt="disabled"
1208   ;;
1209   --enable-fdt) fdt="enabled"
1210   ;;
1211   --enable-fdt=git) fdt="internal"
1212   ;;
1213   --enable-fdt=system) fdt="system"
1214   ;;
1215   --disable-linux-aio) linux_aio="no"
1216   ;;
1217   --enable-linux-aio) linux_aio="yes"
1218   ;;
1219   --disable-linux-io-uring) linux_io_uring="no"
1220   ;;
1221   --enable-linux-io-uring) linux_io_uring="yes"
1222   ;;
1223   --disable-attr) attr="disabled"
1224   ;;
1225   --enable-attr) attr="enabled"
1226   ;;
1227   --disable-membarrier) membarrier="no"
1228   ;;
1229   --enable-membarrier) membarrier="yes"
1230   ;;
1231   --disable-blobs) blobs="false"
1232   ;;
1233   --with-pkgversion=*) pkgversion="$optarg"
1234   ;;
1235   --with-coroutine=*) coroutine="$optarg"
1236   ;;
1237   --disable-coroutine-pool) coroutine_pool="no"
1238   ;;
1239   --enable-coroutine-pool) coroutine_pool="yes"
1240   ;;
1241   --enable-debug-stack-usage) debug_stack_usage="yes"
1242   ;;
1243   --enable-crypto-afalg) crypto_afalg="yes"
1244   ;;
1245   --disable-crypto-afalg) crypto_afalg="no"
1246   ;;
1247   --disable-docs) docs="disabled"
1248   ;;
1249   --enable-docs) docs="enabled"
1250   ;;
1251   --disable-vhost-net) vhost_net="no"
1252   ;;
1253   --enable-vhost-net) vhost_net="yes"
1254   ;;
1255   --disable-vhost-crypto) vhost_crypto="no"
1256   ;;
1257   --enable-vhost-crypto) vhost_crypto="yes"
1258   ;;
1259   --disable-vhost-scsi) vhost_scsi="no"
1260   ;;
1261   --enable-vhost-scsi) vhost_scsi="yes"
1262   ;;
1263   --disable-vhost-vsock) vhost_vsock="no"
1264   ;;
1265   --enable-vhost-vsock) vhost_vsock="yes"
1266   ;;
1267   --disable-vhost-user-blk-server) vhost_user_blk_server="disabled"
1268   ;;
1269   --enable-vhost-user-blk-server) vhost_user_blk_server="enabled"
1270   ;;
1271   --disable-vhost-user-fs) vhost_user_fs="no"
1272   ;;
1273   --enable-vhost-user-fs) vhost_user_fs="yes"
1274   ;;
1275   --disable-opengl) opengl="no"
1276   ;;
1277   --enable-opengl) opengl="yes"
1278   ;;
1279   --disable-rbd) rbd="disabled"
1280   ;;
1281   --enable-rbd) rbd="enabled"
1282   ;;
1283   --disable-xfsctl) xfs="no"
1284   ;;
1285   --enable-xfsctl) xfs="yes"
1286   ;;
1287   --disable-smartcard) smartcard="no"
1288   ;;
1289   --enable-smartcard) smartcard="yes"
1290   ;;
1291   --disable-u2f) u2f="disabled"
1292   ;;
1293   --enable-u2f) u2f="enabled"
1294   ;;
1295   --disable-libusb) libusb="no"
1296   ;;
1297   --enable-libusb) libusb="yes"
1298   ;;
1299   --disable-usb-redir) usb_redir="no"
1300   ;;
1301   --enable-usb-redir) usb_redir="yes"
1302   ;;
1303   --disable-zlib-test)
1304   ;;
1305   --disable-lzo) lzo="disabled"
1306   ;;
1307   --enable-lzo) lzo="enabled"
1308   ;;
1309   --disable-snappy) snappy="disabled"
1310   ;;
1311   --enable-snappy) snappy="enabled"
1312   ;;
1313   --disable-bzip2) bzip2="disabled"
1314   ;;
1315   --enable-bzip2) bzip2="enabled"
1316   ;;
1317   --enable-lzfse) lzfse="enabled"
1318   ;;
1319   --disable-lzfse) lzfse="disabled"
1320   ;;
1321   --disable-zstd) zstd="disabled"
1322   ;;
1323   --enable-zstd) zstd="enabled"
1324   ;;
1325   --enable-guest-agent) guest_agent="yes"
1326   ;;
1327   --disable-guest-agent) guest_agent="no"
1328   ;;
1329   --enable-guest-agent-msi) guest_agent_msi="enabled"
1330   ;;
1331   --disable-guest-agent-msi) guest_agent_msi="disabled"
1332   ;;
1333   --with-vss-sdk) vss_win32_sdk=""
1334   ;;
1335   --with-vss-sdk=*) vss_win32_sdk="$optarg"
1336   ;;
1337   --without-vss-sdk) vss_win32_sdk="no"
1338   ;;
1339   --with-win-sdk) win_sdk=""
1340   ;;
1341   --with-win-sdk=*) win_sdk="$optarg"
1342   ;;
1343   --without-win-sdk) win_sdk="no"
1344   ;;
1345   --enable-tools) want_tools="yes"
1346   ;;
1347   --disable-tools) want_tools="no"
1348   ;;
1349   --enable-seccomp) seccomp="enabled"
1350   ;;
1351   --disable-seccomp) seccomp="disabled"
1352   ;;
1353   --disable-glusterfs) glusterfs="disabled"
1354   ;;
1355   --disable-avx2) avx2_opt="no"
1356   ;;
1357   --enable-avx2) avx2_opt="yes"
1358   ;;
1359   --disable-avx512f) avx512f_opt="no"
1360   ;;
1361   --enable-avx512f) avx512f_opt="yes"
1362   ;;
1363
1364   --enable-glusterfs) glusterfs="enabled"
1365   ;;
1366   --disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
1367       echo "$0: $opt is obsolete, virtio-blk data-plane is always on" >&2
1368   ;;
1369   --enable-vhdx|--disable-vhdx)
1370       echo "$0: $opt is obsolete, VHDX driver is always built" >&2
1371   ;;
1372   --enable-uuid|--disable-uuid)
1373       echo "$0: $opt is obsolete, UUID support is always built" >&2
1374   ;;
1375   --disable-gtk) gtk="disabled"
1376   ;;
1377   --enable-gtk) gtk="enabled"
1378   ;;
1379   --tls-priority=*) tls_priority="$optarg"
1380   ;;
1381   --disable-gnutls) gnutls="no"
1382   ;;
1383   --enable-gnutls) gnutls="yes"
1384   ;;
1385   --disable-nettle) nettle="no"
1386   ;;
1387   --enable-nettle) nettle="yes"
1388   ;;
1389   --disable-gcrypt) gcrypt="no"
1390   ;;
1391   --enable-gcrypt) gcrypt="yes"
1392   ;;
1393   --disable-auth-pam) auth_pam="no"
1394   ;;
1395   --enable-auth-pam) auth_pam="yes"
1396   ;;
1397   --enable-rdma) rdma="yes"
1398   ;;
1399   --disable-rdma) rdma="no"
1400   ;;
1401   --enable-pvrdma) pvrdma="yes"
1402   ;;
1403   --disable-pvrdma) pvrdma="no"
1404   ;;
1405   --disable-vte) vte="no"
1406   ;;
1407   --enable-vte) vte="yes"
1408   ;;
1409   --disable-virglrenderer) virglrenderer="no"
1410   ;;
1411   --enable-virglrenderer) virglrenderer="yes"
1412   ;;
1413   --disable-tpm) tpm="no"
1414   ;;
1415   --enable-tpm) tpm="yes"
1416   ;;
1417   --disable-libssh) libssh="no"
1418   ;;
1419   --enable-libssh) libssh="yes"
1420   ;;
1421   --disable-live-block-migration) live_block_migration="no"
1422   ;;
1423   --enable-live-block-migration) live_block_migration="yes"
1424   ;;
1425   --disable-numa) numa="no"
1426   ;;
1427   --enable-numa) numa="yes"
1428   ;;
1429   --disable-libxml2) libxml2="no"
1430   ;;
1431   --enable-libxml2) libxml2="yes"
1432   ;;
1433   --disable-tcmalloc) tcmalloc="no"
1434   ;;
1435   --enable-tcmalloc) tcmalloc="yes"
1436   ;;
1437   --disable-jemalloc) jemalloc="no"
1438   ;;
1439   --enable-jemalloc) jemalloc="yes"
1440   ;;
1441   --disable-replication) replication="no"
1442   ;;
1443   --enable-replication) replication="yes"
1444   ;;
1445   --disable-bochs) bochs="no"
1446   ;;
1447   --enable-bochs) bochs="yes"
1448   ;;
1449   --disable-cloop) cloop="no"
1450   ;;
1451   --enable-cloop) cloop="yes"
1452   ;;
1453   --disable-dmg) dmg="no"
1454   ;;
1455   --enable-dmg) dmg="yes"
1456   ;;
1457   --disable-qcow1) qcow1="no"
1458   ;;
1459   --enable-qcow1) qcow1="yes"
1460   ;;
1461   --disable-vdi) vdi="no"
1462   ;;
1463   --enable-vdi) vdi="yes"
1464   ;;
1465   --disable-vvfat) vvfat="no"
1466   ;;
1467   --enable-vvfat) vvfat="yes"
1468   ;;
1469   --disable-qed) qed="no"
1470   ;;
1471   --enable-qed) qed="yes"
1472   ;;
1473   --disable-parallels) parallels="no"
1474   ;;
1475   --enable-parallels) parallels="yes"
1476   ;;
1477   --disable-sheepdog) sheepdog="no"
1478   ;;
1479   --enable-sheepdog) sheepdog="yes"
1480   ;;
1481   --disable-vhost-user) vhost_user="no"
1482   ;;
1483   --enable-vhost-user) vhost_user="yes"
1484   ;;
1485   --disable-vhost-vdpa) vhost_vdpa="no"
1486   ;;
1487   --enable-vhost-vdpa) vhost_vdpa="yes"
1488   ;;
1489   --disable-vhost-kernel) vhost_kernel="no"
1490   ;;
1491   --enable-vhost-kernel) vhost_kernel="yes"
1492   ;;
1493   --disable-capstone) capstone="disabled"
1494   ;;
1495   --enable-capstone) capstone="enabled"
1496   ;;
1497   --enable-capstone=git) capstone="internal"
1498   ;;
1499   --enable-capstone=system) capstone="system"
1500   ;;
1501   --with-git=*) git="$optarg"
1502   ;;
1503   --enable-git-update)
1504       git_submodules_action="update"
1505       echo "--enable-git-update deprecated, use --with-git-submodules=update"
1506   ;;
1507   --disable-git-update)
1508       git_submodules_action="validate"
1509       echo "--disable-git-update deprecated, use --with-git-submodules=validate"
1510   ;;
1511   --with-git-submodules=*)
1512       git_submodules_action="$optarg"
1513   ;;
1514   --enable-debug-mutex) debug_mutex=yes
1515   ;;
1516   --disable-debug-mutex) debug_mutex=no
1517   ;;
1518   --enable-libpmem) libpmem=yes
1519   ;;
1520   --disable-libpmem) libpmem=no
1521   ;;
1522   --enable-xkbcommon) xkbcommon="enabled"
1523   ;;
1524   --disable-xkbcommon) xkbcommon="disabled"
1525   ;;
1526   --enable-plugins) plugins="yes"
1527   ;;
1528   --disable-plugins) plugins="no"
1529   ;;
1530   --enable-containers) use_containers="yes"
1531   ;;
1532   --disable-containers) use_containers="no"
1533   ;;
1534   --enable-fuzzing) fuzzing=yes
1535   ;;
1536   --disable-fuzzing) fuzzing=no
1537   ;;
1538   --gdb=*) gdb_bin="$optarg"
1539   ;;
1540   --enable-rng-none) rng_none=yes
1541   ;;
1542   --disable-rng-none) rng_none=no
1543   ;;
1544   --enable-keyring) secret_keyring="yes"
1545   ;;
1546   --disable-keyring) secret_keyring="no"
1547   ;;
1548   --enable-libdaxctl) libdaxctl=yes
1549   ;;
1550   --disable-libdaxctl) libdaxctl=no
1551   ;;
1552   --enable-fuse) fuse="enabled"
1553   ;;
1554   --disable-fuse) fuse="disabled"
1555   ;;
1556   --enable-fuse-lseek) fuse_lseek="enabled"
1557   ;;
1558   --disable-fuse-lseek) fuse_lseek="disabled"
1559   ;;
1560   --enable-multiprocess) multiprocess="enabled"
1561   ;;
1562   --disable-multiprocess) multiprocess="disabled"
1563   ;;
1564   --enable-gio) gio=yes
1565   ;;
1566   --disable-gio) gio=no
1567   ;;
1568   *)
1569       echo "ERROR: unknown option $opt"
1570       echo "Try '$0 --help' for more information"
1571       exit 1
1572   ;;
1573   esac
1574 done
1575
1576 case $git_submodules_action in
1577     update|validate)
1578         if test ! -e "$source_path/.git"; then
1579             echo "ERROR: cannot $git_submodules_action git submodules without .git"
1580             exit 1
1581         fi
1582     ;;
1583     ignore)
1584     ;;
1585     *)
1586         echo "ERROR: invalid --with-git-submodules= value '$git_submodules_action'"
1587         exit 1
1588     ;;
1589 esac
1590
1591 libdir="${libdir:-$prefix/lib}"
1592 libexecdir="${libexecdir:-$prefix/libexec}"
1593 includedir="${includedir:-$prefix/include}"
1594
1595 if test "$mingw32" = "yes" ; then
1596     bindir="${bindir:-$prefix}"
1597 else
1598     bindir="${bindir:-$prefix/bin}"
1599 fi
1600 mandir="${mandir:-$prefix/share/man}"
1601 datadir="${datadir:-$prefix/share}"
1602 docdir="${docdir:-$prefix/share/doc}"
1603 sysconfdir="${sysconfdir:-$prefix/etc}"
1604 local_statedir="${local_statedir:-$prefix/var}"
1605 firmwarepath="${firmwarepath:-$datadir/qemu-firmware}"
1606 localedir="${localedir:-$datadir/locale}"
1607
1608 case "$cpu" in
1609     ppc)
1610            CPU_CFLAGS="-m32"
1611            QEMU_LDFLAGS="-m32 $QEMU_LDFLAGS"
1612            ;;
1613     ppc64)
1614            CPU_CFLAGS="-m64"
1615            QEMU_LDFLAGS="-m64 $QEMU_LDFLAGS"
1616            ;;
1617     sparc)
1618            CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc"
1619            QEMU_LDFLAGS="-m32 -mv8plus $QEMU_LDFLAGS"
1620            ;;
1621     sparc64)
1622            CPU_CFLAGS="-m64 -mcpu=ultrasparc"
1623            QEMU_LDFLAGS="-m64 $QEMU_LDFLAGS"
1624            ;;
1625     s390)
1626            CPU_CFLAGS="-m31"
1627            QEMU_LDFLAGS="-m31 $QEMU_LDFLAGS"
1628            ;;
1629     s390x)
1630            CPU_CFLAGS="-m64"
1631            QEMU_LDFLAGS="-m64 $QEMU_LDFLAGS"
1632            ;;
1633     i386)
1634            CPU_CFLAGS="-m32"
1635            QEMU_LDFLAGS="-m32 $QEMU_LDFLAGS"
1636            ;;
1637     x86_64)
1638            # ??? Only extremely old AMD cpus do not have cmpxchg16b.
1639            # If we truly care, we should simply detect this case at
1640            # runtime and generate the fallback to serial emulation.
1641            CPU_CFLAGS="-m64 -mcx16"
1642            QEMU_LDFLAGS="-m64 $QEMU_LDFLAGS"
1643            ;;
1644     x32)
1645            CPU_CFLAGS="-mx32"
1646            QEMU_LDFLAGS="-mx32 $QEMU_LDFLAGS"
1647            ;;
1648     # No special flags required for other host CPUs
1649 esac
1650
1651 eval "cross_cc_${cpu}=\$host_cc"
1652 cross_cc_vars="$cross_cc_vars cross_cc_${cpu}"
1653 QEMU_CFLAGS="$CPU_CFLAGS $QEMU_CFLAGS"
1654
1655 # For user-mode emulation the host arch has to be one we explicitly
1656 # support, even if we're using TCI.
1657 if [ "$ARCH" = "unknown" ]; then
1658   bsd_user="no"
1659   linux_user="no"
1660 fi
1661
1662 default_target_list=""
1663 deprecated_targets_list=ppc64abi32-linux-user,lm32-softmmu,unicore32-softmmu
1664 deprecated_features=""
1665 mak_wilds=""
1666
1667 if [ "$softmmu" = "yes" ]; then
1668     mak_wilds="${mak_wilds} $source_path/default-configs/targets/*-softmmu.mak"
1669 fi
1670 if [ "$linux_user" = "yes" ]; then
1671     mak_wilds="${mak_wilds} $source_path/default-configs/targets/*-linux-user.mak"
1672 fi
1673 if [ "$bsd_user" = "yes" ]; then
1674     mak_wilds="${mak_wilds} $source_path/default-configs/targets/*-bsd-user.mak"
1675 fi
1676
1677 # If the user doesn't explicitly specify a deprecated target we will
1678 # skip it.
1679 if test -z "$target_list"; then
1680     if test -z "$target_list_exclude"; then
1681         target_list_exclude="$deprecated_targets_list"
1682     else
1683         target_list_exclude="$target_list_exclude,$deprecated_targets_list"
1684     fi
1685 fi
1686
1687 for config in $mak_wilds; do
1688     target="$(basename "$config" .mak)"
1689     if echo "$target_list_exclude" | grep -vq "$target"; then
1690         default_target_list="${default_target_list} $target"
1691     fi
1692 done
1693
1694 # Enumerate public trace backends for --help output
1695 trace_backend_list=$(echo $(grep -le '^PUBLIC = True$' "$source_path"/scripts/tracetool/backend/*.py | sed -e 's/^.*\/\(.*\)\.py$/\1/'))
1696
1697 if test x"$show_help" = x"yes" ; then
1698 cat << EOF
1699
1700 Usage: configure [options]
1701 Options: [defaults in brackets after descriptions]
1702
1703 Standard options:
1704   --help                   print this message
1705   --prefix=PREFIX          install in PREFIX [$prefix]
1706   --interp-prefix=PREFIX   where to find shared libraries, etc.
1707                            use %M for cpu name [$interp_prefix]
1708   --target-list=LIST       set target list (default: build all non-deprecated)
1709 $(echo Available targets: $default_target_list | \
1710   fold -s -w 53 | sed -e 's/^/                           /')
1711 $(echo Deprecated targets: $deprecated_targets_list | \
1712   fold -s -w 53 | sed -e 's/^/                           /')
1713   --target-list-exclude=LIST exclude a set of targets from the default target-list
1714
1715 Advanced options (experts only):
1716   --cross-prefix=PREFIX    use PREFIX for compile tools, PREFIX can be blank [$cross_prefix]
1717   --cc=CC                  use C compiler CC [$cc]
1718   --iasl=IASL              use ACPI compiler IASL [$iasl]
1719   --host-cc=CC             use C compiler CC [$host_cc] for code run at
1720                            build time
1721   --cxx=CXX                use C++ compiler CXX [$cxx]
1722   --objcc=OBJCC            use Objective-C compiler OBJCC [$objcc]
1723   --extra-cflags=CFLAGS    append extra C compiler flags QEMU_CFLAGS
1724   --extra-cxxflags=CXXFLAGS append extra C++ compiler flags QEMU_CXXFLAGS
1725   --extra-ldflags=LDFLAGS  append extra linker flags LDFLAGS
1726   --cross-cc-ARCH=CC       use compiler when building ARCH guest test cases
1727   --cross-cc-flags-ARCH=   use compiler flags when building ARCH guest tests
1728   --make=MAKE              use specified make [$make]
1729   --python=PYTHON          use specified python [$python]
1730   --sphinx-build=SPHINX    use specified sphinx-build [$sphinx_build]
1731   --meson=MESON            use specified meson [$meson]
1732   --ninja=NINJA            use specified ninja [$ninja]
1733   --smbd=SMBD              use specified smbd [$smbd]
1734   --with-git=GIT           use specified git [$git]
1735   --with-git-submodules=update   update git submodules (default if .git dir exists)
1736   --with-git-submodules=validate fail if git submodules are not up to date
1737   --with-git-submodules=ignore   do not update or check git submodules (default if no .git dir)
1738   --static                 enable static build [$static]
1739   --mandir=PATH            install man pages in PATH
1740   --datadir=PATH           install firmware in PATH/$qemu_suffix
1741   --localedir=PATH         install translation in PATH/$qemu_suffix
1742   --docdir=PATH            install documentation in PATH/$qemu_suffix
1743   --bindir=PATH            install binaries in PATH
1744   --libdir=PATH            install libraries in PATH
1745   --libexecdir=PATH        install helper binaries in PATH
1746   --sysconfdir=PATH        install config in PATH/$qemu_suffix
1747   --localstatedir=PATH     install local state in PATH (set at runtime on win32)
1748   --firmwarepath=PATH      search PATH for firmware files
1749   --efi-aarch64=PATH       PATH of efi file to use for aarch64 VMs.
1750   --with-suffix=SUFFIX     suffix for QEMU data inside datadir/libdir/sysconfdir/docdir [$qemu_suffix]
1751   --with-pkgversion=VERS   use specified string as sub-version of the package
1752   --without-default-features default all --enable-* options to "disabled"
1753   --without-default-devices  do not include any device that is not needed to
1754                            start the emulator (only use if you are including
1755                            desired devices in default-configs/devices/)
1756   --enable-debug           enable common debug build options
1757   --enable-sanitizers      enable default sanitizers
1758   --enable-tsan            enable thread sanitizer
1759   --disable-strip          disable stripping binaries
1760   --disable-werror         disable compilation abort on warning
1761   --disable-stack-protector disable compiler-provided stack protection
1762   --audio-drv-list=LIST    set audio drivers list:
1763                            Available drivers: $audio_possible_drivers
1764   --block-drv-whitelist=L  Same as --block-drv-rw-whitelist=L
1765   --block-drv-rw-whitelist=L
1766                            set block driver read-write whitelist
1767                            (affects only QEMU, not qemu-img)
1768   --block-drv-ro-whitelist=L
1769                            set block driver read-only whitelist
1770                            (affects only QEMU, not qemu-img)
1771   --enable-trace-backends=B Set trace backend
1772                            Available backends: $trace_backend_list
1773   --with-trace-file=NAME   Full PATH,NAME of file to store traces
1774                            Default:trace-<pid>
1775   --disable-slirp          disable SLIRP userspace network connectivity
1776   --enable-tcg-interpreter enable TCI (TCG with bytecode interpreter, experimental and slow)
1777   --enable-malloc-trim     enable libc malloc_trim() for memory optimization
1778   --oss-lib                path to OSS library
1779   --cpu=CPU                Build for host CPU [$cpu]
1780   --with-coroutine=BACKEND coroutine backend. Supported options:
1781                            ucontext, sigaltstack, windows
1782   --enable-gcov            enable test coverage analysis with gcov
1783   --disable-blobs          disable installing provided firmware blobs
1784   --with-vss-sdk=SDK-path  enable Windows VSS support in QEMU Guest Agent
1785   --with-win-sdk=SDK-path  path to Windows Platform SDK (to build VSS .tlb)
1786   --tls-priority           default TLS protocol/cipher priority string
1787   --enable-gprof           QEMU profiling with gprof
1788   --enable-profiler        profiler support
1789   --enable-debug-stack-usage
1790                            track the maximum stack usage of stacks created by qemu_alloc_stack
1791   --enable-plugins
1792                            enable plugins via shared library loading
1793   --disable-containers     don't use containers for cross-building
1794   --gdb=GDB-path           gdb to use for gdbstub tests [$gdb_bin]
1795
1796 Optional features, enabled with --enable-FEATURE and
1797 disabled with --disable-FEATURE, default is enabled if available
1798 (unless built with --without-default-features):
1799
1800   system          all system emulation targets
1801   user            supported user emulation targets
1802   linux-user      all linux usermode emulation targets
1803   bsd-user        all BSD usermode emulation targets
1804   docs            build documentation
1805   guest-agent     build the QEMU Guest Agent
1806   guest-agent-msi build guest agent Windows MSI installation package
1807   pie             Position Independent Executables
1808   modules         modules support (non-Windows)
1809   module-upgrades try to load modules from alternate paths for upgrades
1810   debug-tcg       TCG debugging (default is disabled)
1811   debug-info      debugging information
1812   lto             Enable Link-Time Optimization.
1813   sparse          sparse checker
1814   safe-stack      SafeStack Stack Smash Protection. Depends on
1815                   clang/llvm >= 3.7 and requires coroutine backend ucontext.
1816   cfi             Enable Control-Flow Integrity for indirect function calls.
1817                   In case of a cfi violation, QEMU is terminated with SIGILL
1818                   Depends on lto and is incompatible with modules
1819                   Automatically enables Link-Time Optimization (lto)
1820   cfi-debug       In case of a cfi violation, a message containing the line that
1821                   triggered the error is written to stderr. After the error,
1822                   QEMU is still terminated with SIGILL
1823   gnutls          GNUTLS cryptography support
1824   nettle          nettle cryptography support
1825   gcrypt          libgcrypt cryptography support
1826   auth-pam        PAM access control
1827   sdl             SDL UI
1828   sdl-image       SDL Image support for icons
1829   gtk             gtk UI
1830   vte             vte support for the gtk UI
1831   curses          curses UI
1832   iconv           font glyph conversion support
1833   vnc             VNC UI support
1834   vnc-sasl        SASL encryption for VNC server
1835   vnc-jpeg        JPEG lossy compression for VNC server
1836   vnc-png         PNG compression for VNC server
1837   cocoa           Cocoa UI (Mac OS X only)
1838   virtfs          VirtFS
1839   virtiofsd       build virtiofs daemon (virtiofsd)
1840   libudev         Use libudev to enumerate host devices
1841   mpath           Multipath persistent reservation passthrough
1842   xen             xen backend driver support
1843   xen-pci-passthrough    PCI passthrough support for Xen
1844   brlapi          BrlAPI (Braile)
1845   curl            curl connectivity
1846   membarrier      membarrier system call (for Linux 4.14+ or Windows)
1847   fdt             fdt device tree
1848   kvm             KVM acceleration support
1849   hax             HAX acceleration support
1850   hvf             Hypervisor.framework acceleration support
1851   whpx            Windows Hypervisor Platform acceleration support
1852   rdma            Enable RDMA-based migration
1853   pvrdma          Enable PVRDMA support
1854   vde             support for vde network
1855   netmap          support for netmap network
1856   linux-aio       Linux AIO support
1857   linux-io-uring  Linux io_uring support
1858   cap-ng          libcap-ng support
1859   attr            attr and xattr support
1860   vhost-net       vhost-net kernel acceleration support
1861   vhost-vsock     virtio sockets device support
1862   vhost-scsi      vhost-scsi kernel target support
1863   vhost-crypto    vhost-user-crypto backend support
1864   vhost-kernel    vhost kernel backend support
1865   vhost-user      vhost-user backend support
1866   vhost-user-blk-server    vhost-user-blk server support
1867   vhost-vdpa      vhost-vdpa kernel backend support
1868   spice           spice
1869   rbd             rados block device (rbd)
1870   libiscsi        iscsi support
1871   libnfs          nfs support
1872   smartcard       smartcard support (libcacard)
1873   u2f             U2F support (u2f-emu)
1874   libusb          libusb (for usb passthrough)
1875   live-block-migration   Block migration in the main migration stream
1876   usb-redir       usb network redirection support
1877   lzo             support of lzo compression library
1878   snappy          support of snappy compression library
1879   bzip2           support of bzip2 compression library
1880                   (for reading bzip2-compressed dmg images)
1881   lzfse           support of lzfse compression library
1882                   (for reading lzfse-compressed dmg images)
1883   zstd            support for zstd compression library
1884                   (for migration compression and qcow2 cluster compression)
1885   seccomp         seccomp support
1886   coroutine-pool  coroutine freelist (better performance)
1887   glusterfs       GlusterFS backend
1888   tpm             TPM support
1889   libssh          ssh block device support
1890   numa            libnuma support
1891   libxml2         for Parallels image format
1892   tcmalloc        tcmalloc support
1893   jemalloc        jemalloc support
1894   avx2            AVX2 optimization support
1895   avx512f         AVX512F optimization support
1896   replication     replication support
1897   opengl          opengl support
1898   virglrenderer   virgl rendering support
1899   xfsctl          xfsctl support
1900   qom-cast-debug  cast debugging support
1901   tools           build qemu-io, qemu-nbd and qemu-img tools
1902   bochs           bochs image format support
1903   cloop           cloop image format support
1904   dmg             dmg image format support
1905   qcow1           qcow v1 image format support
1906   vdi             vdi image format support
1907   vvfat           vvfat image format support
1908   qed             qed image format support
1909   parallels       parallels image format support
1910   sheepdog        sheepdog block driver support (deprecated)
1911   crypto-afalg    Linux AF_ALG crypto backend driver
1912   capstone        capstone disassembler support
1913   debug-mutex     mutex debugging support
1914   libpmem         libpmem support
1915   xkbcommon       xkbcommon support
1916   rng-none        dummy RNG, avoid using /dev/(u)random and getrandom()
1917   libdaxctl       libdaxctl support
1918   fuse            FUSE block device export
1919   fuse-lseek      SEEK_HOLE/SEEK_DATA support for FUSE exports
1920   multiprocess    Out of process device emulation support
1921   gio             libgio support
1922
1923 NOTE: The object files are built at the place where configure is launched
1924 EOF
1925 exit 0
1926 fi
1927
1928 # Remove old dependency files to make sure that they get properly regenerated
1929 rm -f */config-devices.mak.d
1930
1931 if test -z "$python"
1932 then
1933     error_exit "Python not found. Use --python=/path/to/python"
1934 fi
1935 if ! has "$make"
1936 then
1937     error_exit "GNU make ($make) not found"
1938 fi
1939
1940 # Note that if the Python conditional here evaluates True we will exit
1941 # with status 1 which is a shell 'false' value.
1942 if ! $python -c 'import sys; sys.exit(sys.version_info < (3,6))'; then
1943   error_exit "Cannot use '$python', Python >= 3.6 is required." \
1944       "Use --python=/path/to/python to specify a supported Python."
1945 fi
1946
1947 # Preserve python version since some functionality is dependent on it
1948 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)
1949
1950 # Suppress writing compiled files
1951 python="$python -B"
1952
1953 if test -z "$meson"; then
1954     if test "$explicit_python" = no && has meson && version_ge "$(meson --version)" 0.55.3; then
1955         meson=meson
1956     elif test $git_submodules_action != 'ignore' ; then
1957         meson=git
1958     elif test -e "${source_path}/meson/meson.py" ; then
1959         meson=internal
1960     else
1961         if test "$explicit_python" = yes; then
1962             error_exit "--python requires using QEMU's embedded Meson distribution, but it was not found."
1963         else
1964             error_exit "Meson not found.  Use --meson=/path/to/meson"
1965         fi
1966     fi
1967 else
1968     # Meson uses its own Python interpreter to invoke other Python scripts,
1969     # but the user wants to use the one they specified with --python.
1970     #
1971     # We do not want to override the distro Python interpreter (and sometimes
1972     # cannot: for example in Homebrew /usr/bin/meson is a bash script), so
1973     # just require --meson=git|internal together with --python.
1974     if test "$explicit_python" = yes; then
1975         case "$meson" in
1976             git | internal) ;;
1977             *) error_exit "--python requires using QEMU's embedded Meson distribution." ;;
1978         esac
1979     fi
1980 fi
1981
1982 if test "$meson" = git; then
1983     git_submodules="${git_submodules} meson"
1984 fi
1985
1986 case "$meson" in
1987     git | internal)
1988         meson="$python ${source_path}/meson/meson.py"
1989         ;;
1990     *) meson=$(command -v "$meson") ;;
1991 esac
1992
1993 # Probe for ninja
1994
1995 if test -z "$ninja"; then
1996     for c in ninja ninja-build samu; do
1997         if has $c; then
1998             ninja=$(command -v "$c")
1999             break
2000         fi
2001     done
2002     if test -z "$ninja"; then
2003       error_exit "Cannot find Ninja"
2004     fi
2005 fi
2006
2007 # Check that the C compiler works. Doing this here before testing
2008 # the host CPU ensures that we had a valid CC to autodetect the
2009 # $cpu var (and we should bail right here if that's not the case).
2010 # It also allows the help message to be printed without a CC.
2011 write_c_skeleton;
2012 if compile_object ; then
2013   : C compiler works ok
2014 else
2015     error_exit "\"$cc\" either does not exist or does not work"
2016 fi
2017 if ! compile_prog ; then
2018     error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
2019 fi
2020
2021 # Consult white-list to determine whether to enable werror
2022 # by default.  Only enable by default for git builds
2023 if test -z "$werror" ; then
2024     if test "$git_submodules_action" != "ignore" && \
2025         { test "$linux" = "yes" || test "$mingw32" = "yes"; }; then
2026         werror="yes"
2027     else
2028         werror="no"
2029     fi
2030 fi
2031
2032 if test "$targetos" = "bogus"; then
2033     # Now that we know that we're not printing the help and that
2034     # the compiler works (so the results of the check_defines we used
2035     # to identify the OS are reliable), if we didn't recognize the
2036     # host OS we should stop now.
2037     error_exit "Unrecognized host OS (uname -s reports '$(uname -s)')"
2038 fi
2039
2040 # Check whether the compiler matches our minimum requirements:
2041 cat > $TMPC << EOF
2042 #if defined(__clang_major__) && defined(__clang_minor__)
2043 # ifdef __apple_build_version__
2044 #  if __clang_major__ < 5 || (__clang_major__ == 5 && __clang_minor__ < 1)
2045 #   error You need at least XCode Clang v5.1 to compile QEMU
2046 #  endif
2047 # else
2048 #  if __clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ < 4)
2049 #   error You need at least Clang v3.4 to compile QEMU
2050 #  endif
2051 # endif
2052 #elif defined(__GNUC__) && defined(__GNUC_MINOR__)
2053 # if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8)
2054 #  error You need at least GCC v4.8 to compile QEMU
2055 # endif
2056 #else
2057 # error You either need GCC or Clang to compiler QEMU
2058 #endif
2059 int main (void) { return 0; }
2060 EOF
2061 if ! compile_prog "" "" ; then
2062     error_exit "You need at least GCC v4.8 or Clang v3.4 (or XCode Clang v5.1)"
2063 fi
2064
2065 # Accumulate -Wfoo and -Wno-bar separately.
2066 # We will list all of the enable flags first, and the disable flags second.
2067 # Note that we do not add -Werror, because that would enable it for all
2068 # configure tests. If a configure test failed due to -Werror this would
2069 # just silently disable some features, so it's too error prone.
2070
2071 warn_flags=
2072 add_to warn_flags -Wold-style-declaration
2073 add_to warn_flags -Wold-style-definition
2074 add_to warn_flags -Wtype-limits
2075 add_to warn_flags -Wformat-security
2076 add_to warn_flags -Wformat-y2k
2077 add_to warn_flags -Winit-self
2078 add_to warn_flags -Wignored-qualifiers
2079 add_to warn_flags -Wempty-body
2080 add_to warn_flags -Wnested-externs
2081 add_to warn_flags -Wendif-labels
2082 add_to warn_flags -Wexpansion-to-defined
2083 add_to warn_flags -Wimplicit-fallthrough=2
2084
2085 nowarn_flags=
2086 add_to nowarn_flags -Wno-initializer-overrides
2087 add_to nowarn_flags -Wno-missing-include-dirs
2088 add_to nowarn_flags -Wno-shift-negative-value
2089 add_to nowarn_flags -Wno-string-plus-int
2090 add_to nowarn_flags -Wno-typedef-redefinition
2091 add_to nowarn_flags -Wno-tautological-type-limit-compare
2092 add_to nowarn_flags -Wno-psabi
2093
2094 gcc_flags="$warn_flags $nowarn_flags"
2095
2096 cc_has_warning_flag() {
2097     write_c_skeleton;
2098
2099     # Use the positive sense of the flag when testing for -Wno-wombat
2100     # support (gcc will happily accept the -Wno- form of unknown
2101     # warning options).
2102     optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
2103     compile_prog "-Werror $optflag" ""
2104 }
2105
2106 for flag in $gcc_flags; do
2107     if cc_has_warning_flag $flag ; then
2108         QEMU_CFLAGS="$QEMU_CFLAGS $flag"
2109     fi
2110 done
2111
2112 if test "$stack_protector" != "no"; then
2113   cat > $TMPC << EOF
2114 int main(int argc, char *argv[])
2115 {
2116     char arr[64], *p = arr, *c = argv[0];
2117     while (*c) {
2118         *p++ = *c++;
2119     }
2120     return 0;
2121 }
2122 EOF
2123   gcc_flags="-fstack-protector-strong -fstack-protector-all"
2124   sp_on=0
2125   for flag in $gcc_flags; do
2126     # We need to check both a compile and a link, since some compiler
2127     # setups fail only on a .c->.o compile and some only at link time
2128     if compile_object "-Werror $flag" &&
2129        compile_prog "-Werror $flag" ""; then
2130       QEMU_CFLAGS="$QEMU_CFLAGS $flag"
2131       QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
2132       sp_on=1
2133       break
2134     fi
2135   done
2136   if test "$stack_protector" = yes; then
2137     if test $sp_on = 0; then
2138       error_exit "Stack protector not supported"
2139     fi
2140   fi
2141 fi
2142
2143 # Disable -Wmissing-braces on older compilers that warn even for
2144 # the "universal" C zero initializer {0}.
2145 cat > $TMPC << EOF
2146 struct {
2147   int a[2];
2148 } x = {0};
2149 EOF
2150 if compile_object "-Werror" "" ; then
2151   :
2152 else
2153   QEMU_CFLAGS="$QEMU_CFLAGS -Wno-missing-braces"
2154 fi
2155
2156 # Our module code doesn't support Windows
2157 if test "$modules" = "yes" && test "$mingw32" = "yes" ; then
2158   error_exit "Modules are not available for Windows"
2159 fi
2160
2161 # module_upgrades is only reasonable if modules are enabled
2162 if test "$modules" = "no" && test "$module_upgrades" = "yes" ; then
2163   error_exit "Can't enable module-upgrades as Modules are not enabled"
2164 fi
2165
2166 # Static linking is not possible with modules or PIE
2167 if test "$static" = "yes" ; then
2168   if test "$modules" = "yes" ; then
2169     error_exit "static and modules are mutually incompatible"
2170   fi
2171 fi
2172
2173 # Unconditional check for compiler __thread support
2174   cat > $TMPC << EOF
2175 static __thread int tls_var;
2176 int main(void) { return tls_var; }
2177 EOF
2178
2179 if ! compile_prog "-Werror" "" ; then
2180     error_exit "Your compiler does not support the __thread specifier for " \
2181         "Thread-Local Storage (TLS). Please upgrade to a version that does."
2182 fi
2183
2184 cat > $TMPC << EOF
2185
2186 #ifdef __linux__
2187 #  define THREAD __thread
2188 #else
2189 #  define THREAD
2190 #endif
2191 static THREAD int tls_var;
2192 int main(void) { return tls_var; }
2193 EOF
2194
2195 # Check we support --no-pie first; we will need this for building ROMs.
2196 if compile_prog "-Werror -fno-pie" "-no-pie"; then
2197   CFLAGS_NOPIE="-fno-pie"
2198 fi
2199
2200 if test "$static" = "yes"; then
2201   if test "$pie" != "no" && compile_prog "-Werror -fPIE -DPIE" "-static-pie"; then
2202     CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
2203     QEMU_LDFLAGS="-static-pie $QEMU_LDFLAGS"
2204     pie="yes"
2205   elif test "$pie" = "yes"; then
2206     error_exit "-static-pie not available due to missing toolchain support"
2207   else
2208     QEMU_LDFLAGS="-static $QEMU_LDFLAGS"
2209     pie="no"
2210   fi
2211 elif test "$pie" = "no"; then
2212   CONFIGURE_CFLAGS="$CFLAGS_NOPIE $CONFIGURE_CFLAGS"
2213 elif compile_prog "-Werror -fPIE -DPIE" "-pie"; then
2214   CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
2215   CONFIGURE_LDFLAGS="-pie $CONFIGURE_LDFLAGS"
2216   pie="yes"
2217 elif test "$pie" = "yes"; then
2218   error_exit "PIE not available due to missing toolchain support"
2219 else
2220   echo "Disabling PIE due to missing toolchain support"
2221   pie="no"
2222 fi
2223
2224 # Detect support for PT_GNU_RELRO + DT_BIND_NOW.
2225 # The combination is known as "full relro", because .got.plt is read-only too.
2226 if compile_prog "" "-Wl,-z,relro -Wl,-z,now" ; then
2227   QEMU_LDFLAGS="-Wl,-z,relro -Wl,-z,now $QEMU_LDFLAGS"
2228 fi
2229
2230 ##########################################
2231 # __sync_fetch_and_and requires at least -march=i486. Many toolchains
2232 # use i686 as default anyway, but for those that don't, an explicit
2233 # specification is necessary
2234
2235 if test "$cpu" = "i386"; then
2236   cat > $TMPC << EOF
2237 static int sfaa(int *ptr)
2238 {
2239   return __sync_fetch_and_and(ptr, 0);
2240 }
2241
2242 int main(void)
2243 {
2244   int val = 42;
2245   val = __sync_val_compare_and_swap(&val, 0, 1);
2246   sfaa(&val);
2247   return val;
2248 }
2249 EOF
2250   if ! compile_prog "" "" ; then
2251     QEMU_CFLAGS="-march=i486 $QEMU_CFLAGS"
2252   fi
2253 fi
2254
2255 #########################################
2256 # Solaris specific configure tool chain decisions
2257
2258 if test "$solaris" = "yes" ; then
2259   if has ar; then
2260     :
2261   else
2262     if test -f /usr/ccs/bin/ar ; then
2263       error_exit "No path includes ar" \
2264           "Add /usr/ccs/bin to your path and rerun configure"
2265     fi
2266     error_exit "No path includes ar"
2267   fi
2268 fi
2269
2270 if test -z "${target_list+xxx}" ; then
2271     default_targets=yes
2272     for target in $default_target_list; do
2273         target_list="$target_list $target"
2274     done
2275     target_list="${target_list# }"
2276 else
2277     default_targets=no
2278     target_list=$(echo "$target_list" | sed -e 's/,/ /g')
2279     for target in $target_list; do
2280         # Check that we recognised the target name; this allows a more
2281         # friendly error message than if we let it fall through.
2282         case " $default_target_list " in
2283             *" $target "*)
2284                 ;;
2285             *)
2286                 error_exit "Unknown target name '$target'"
2287                 ;;
2288         esac
2289     done
2290 fi
2291
2292 for target in $target_list; do
2293     # if a deprecated target is enabled we note it here
2294     if echo "$deprecated_targets_list" | grep -q "$target"; then
2295         add_to deprecated_features $target
2296     fi
2297 done
2298
2299 # see if system emulation was really requested
2300 case " $target_list " in
2301   *"-softmmu "*) softmmu=yes
2302   ;;
2303   *) softmmu=no
2304   ;;
2305 esac
2306
2307 feature_not_found() {
2308   feature=$1
2309   remedy=$2
2310
2311   error_exit "User requested feature $feature" \
2312       "configure was not able to find it." \
2313       "$remedy"
2314 }
2315
2316 # ---
2317 # big/little endian test
2318 cat > $TMPC << EOF
2319 short big_endian[] = { 0x4269, 0x4765, 0x4e64, 0x4961, 0x4e00, 0, };
2320 short little_endian[] = { 0x694c, 0x7454, 0x654c, 0x6e45, 0x6944, 0x6e41, 0, };
2321 extern int foo(short *, short *);
2322 int main(int argc, char *argv[]) {
2323     return foo(big_endian, little_endian);
2324 }
2325 EOF
2326
2327 if compile_object ; then
2328     if strings -a $TMPO | grep -q BiGeNdIaN ; then
2329         bigendian="yes"
2330     elif strings -a $TMPO | grep -q LiTtLeEnDiAn ; then
2331         bigendian="no"
2332     else
2333         echo big/little test failed
2334     fi
2335 else
2336     echo big/little test failed
2337 fi
2338
2339 ##########################################
2340 # system tools
2341 if test -z "$want_tools"; then
2342     if test "$softmmu" = "no"; then
2343         want_tools=no
2344     else
2345         want_tools=yes
2346     fi
2347 fi
2348
2349 ##########################################
2350 # Disable features only meaningful for system-mode emulation
2351 if test "$softmmu" = "no"; then
2352     audio_drv_list=""
2353 fi
2354
2355 ##########################################
2356 # Some versions of Mac OS X incorrectly define SIZE_MAX
2357 cat > $TMPC << EOF
2358 #include <stdint.h>
2359 #include <stdio.h>
2360 int main(int argc, char *argv[]) {
2361     return printf("%zu", SIZE_MAX);
2362 }
2363 EOF
2364 have_broken_size_max=no
2365 if ! compile_object -Werror ; then
2366     have_broken_size_max=yes
2367 fi
2368
2369 ##########################################
2370 # L2TPV3 probe
2371
2372 cat > $TMPC <<EOF
2373 #include <sys/socket.h>
2374 #include <linux/ip.h>
2375 int main(void) { return sizeof(struct mmsghdr); }
2376 EOF
2377 if compile_prog "" "" ; then
2378   l2tpv3=yes
2379 else
2380   l2tpv3=no
2381 fi
2382
2383 cat > $TMPC <<EOF
2384 #include <sys/mman.h>
2385 int main(int argc, char *argv[]) {
2386     return mlockall(MCL_FUTURE);
2387 }
2388 EOF
2389 if compile_prog "" "" ; then
2390   have_mlockall=yes
2391 else
2392   have_mlockall=no
2393 fi
2394
2395 #########################################
2396 # vhost interdependencies and host support
2397
2398 # vhost backends
2399 if test "$vhost_user" = "yes" && test "$linux" != "yes"; then
2400   error_exit "vhost-user is only available on Linux"
2401 fi
2402 test "$vhost_vdpa" = "" && vhost_vdpa=$linux
2403 if test "$vhost_vdpa" = "yes" && test "$linux" != "yes"; then
2404   error_exit "vhost-vdpa is only available on Linux"
2405 fi
2406 test "$vhost_kernel" = "" && vhost_kernel=$linux
2407 if test "$vhost_kernel" = "yes" && test "$linux" != "yes"; then
2408   error_exit "vhost-kernel is only available on Linux"
2409 fi
2410
2411 # vhost-kernel devices
2412 test "$vhost_scsi" = "" && vhost_scsi=$vhost_kernel
2413 if test "$vhost_scsi" = "yes" && test "$vhost_kernel" != "yes"; then
2414   error_exit "--enable-vhost-scsi requires --enable-vhost-kernel"
2415 fi
2416 test "$vhost_vsock" = "" && vhost_vsock=$vhost_kernel
2417 if test "$vhost_vsock" = "yes" && test "$vhost_kernel" != "yes"; then
2418   error_exit "--enable-vhost-vsock requires --enable-vhost-kernel"
2419 fi
2420
2421 # vhost-user backends
2422 test "$vhost_net_user" = "" && vhost_net_user=$vhost_user
2423 if test "$vhost_net_user" = "yes" && test "$vhost_user" = "no"; then
2424   error_exit "--enable-vhost-net-user requires --enable-vhost-user"
2425 fi
2426 test "$vhost_crypto" = "" && vhost_crypto=$vhost_user
2427 if test "$vhost_crypto" = "yes" && test "$vhost_user" = "no"; then
2428   error_exit "--enable-vhost-crypto requires --enable-vhost-user"
2429 fi
2430 test "$vhost_user_fs" = "" && vhost_user_fs=$vhost_user
2431 if test "$vhost_user_fs" = "yes" && test "$vhost_user" = "no"; then
2432   error_exit "--enable-vhost-user-fs requires --enable-vhost-user"
2433 fi
2434 #vhost-vdpa backends
2435 test "$vhost_net_vdpa" = "" && vhost_net_vdpa=$vhost_vdpa
2436 if test "$vhost_net_vdpa" = "yes" && test "$vhost_vdpa" = "no"; then
2437   error_exit "--enable-vhost-net-vdpa requires --enable-vhost-vdpa"
2438 fi
2439
2440 # OR the vhost-kernel, vhost-vdpa and vhost-user values for simplicity
2441 if test "$vhost_net" = ""; then
2442   test "$vhost_net_user" = "yes" && vhost_net=yes
2443   test "$vhost_net_vdpa" = "yes" && vhost_net=yes
2444   test "$vhost_kernel" = "yes" && vhost_net=yes
2445 fi
2446
2447 ##########################################
2448 # pkg-config probe
2449
2450 if ! has "$pkg_config_exe"; then
2451   error_exit "pkg-config binary '$pkg_config_exe' not found"
2452 fi
2453
2454 ##########################################
2455 # NPTL probe
2456
2457 if test "$linux_user" = "yes"; then
2458   cat > $TMPC <<EOF
2459 #include <sched.h>
2460 #include <linux/futex.h>
2461 int main(void) {
2462 #if !defined(CLONE_SETTLS) || !defined(FUTEX_WAIT)
2463 #error bork
2464 #endif
2465   return 0;
2466 }
2467 EOF
2468   if ! compile_object ; then
2469     feature_not_found "nptl" "Install glibc and linux kernel headers."
2470   fi
2471 fi
2472
2473 ##########################################
2474 # xen probe
2475
2476 if test "$xen" != "disabled" ; then
2477   # Check whether Xen library path is specified via --extra-ldflags to avoid
2478   # overriding this setting with pkg-config output. If not, try pkg-config
2479   # to obtain all needed flags.
2480
2481   if ! echo $EXTRA_LDFLAGS | grep tools/libxc > /dev/null && \
2482      $pkg_config --exists xencontrol ; then
2483     xen_ctrl_version="$(printf '%d%02d%02d' \
2484       $($pkg_config --modversion xencontrol | sed 's/\./ /g') )"
2485     xen=enabled
2486     xen_pc="xencontrol xenstore xenforeignmemory xengnttab"
2487     xen_pc="$xen_pc xenevtchn xendevicemodel"
2488     if $pkg_config --exists xentoolcore; then
2489       xen_pc="$xen_pc xentoolcore"
2490     fi
2491     xen_cflags="$($pkg_config --cflags $xen_pc)"
2492     xen_libs="$($pkg_config --libs $xen_pc)"
2493   else
2494
2495     xen_libs="-lxenstore -lxenctrl"
2496     xen_stable_libs="-lxenforeignmemory -lxengnttab -lxenevtchn"
2497
2498     # First we test whether Xen headers and libraries are available.
2499     # If no, we are done and there is no Xen support.
2500     # If yes, more tests are run to detect the Xen version.
2501
2502     # Xen (any)
2503     cat > $TMPC <<EOF
2504 #include <xenctrl.h>
2505 int main(void) {
2506   return 0;
2507 }
2508 EOF
2509     if ! compile_prog "" "$xen_libs" ; then
2510       # Xen not found
2511       if test "$xen" = "enabled" ; then
2512         feature_not_found "xen" "Install xen devel"
2513       fi
2514       xen=disabled
2515
2516     # Xen unstable
2517     elif
2518         cat > $TMPC <<EOF &&
2519 #undef XC_WANT_COMPAT_DEVICEMODEL_API
2520 #define __XEN_TOOLS__
2521 #include <xendevicemodel.h>
2522 #include <xenforeignmemory.h>
2523 int main(void) {
2524   xendevicemodel_handle *xd;
2525   xenforeignmemory_handle *xfmem;
2526
2527   xd = xendevicemodel_open(0, 0);
2528   xendevicemodel_pin_memory_cacheattr(xd, 0, 0, 0, 0);
2529
2530   xfmem = xenforeignmemory_open(0, 0);
2531   xenforeignmemory_map_resource(xfmem, 0, 0, 0, 0, 0, NULL, 0, 0);
2532
2533   return 0;
2534 }
2535 EOF
2536         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs -lxentoolcore"
2537       then
2538       xen_stable_libs="-lxendevicemodel $xen_stable_libs -lxentoolcore"
2539       xen_ctrl_version=41100
2540       xen=enabled
2541     elif
2542         cat > $TMPC <<EOF &&
2543 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
2544 #include <xenforeignmemory.h>
2545 #include <xentoolcore.h>
2546 int main(void) {
2547   xenforeignmemory_handle *xfmem;
2548
2549   xfmem = xenforeignmemory_open(0, 0);
2550   xenforeignmemory_map2(xfmem, 0, 0, 0, 0, 0, 0, 0);
2551   xentoolcore_restrict_all(0);
2552
2553   return 0;
2554 }
2555 EOF
2556         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs -lxentoolcore"
2557       then
2558       xen_stable_libs="-lxendevicemodel $xen_stable_libs -lxentoolcore"
2559       xen_ctrl_version=41000
2560       xen=enabled
2561     elif
2562         cat > $TMPC <<EOF &&
2563 #undef XC_WANT_COMPAT_DEVICEMODEL_API
2564 #define __XEN_TOOLS__
2565 #include <xendevicemodel.h>
2566 int main(void) {
2567   xendevicemodel_handle *xd;
2568
2569   xd = xendevicemodel_open(0, 0);
2570   xendevicemodel_close(xd);
2571
2572   return 0;
2573 }
2574 EOF
2575         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs"
2576       then
2577       xen_stable_libs="-lxendevicemodel $xen_stable_libs"
2578       xen_ctrl_version=40900
2579       xen=enabled
2580     elif
2581         cat > $TMPC <<EOF &&
2582 /*
2583  * If we have stable libs the we don't want the libxc compat
2584  * layers, regardless of what CFLAGS we may have been given.
2585  *
2586  * Also, check if xengnttab_grant_copy_segment_t is defined and
2587  * grant copy operation is implemented.
2588  */
2589 #undef XC_WANT_COMPAT_EVTCHN_API
2590 #undef XC_WANT_COMPAT_GNTTAB_API
2591 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
2592 #include <xenctrl.h>
2593 #include <xenstore.h>
2594 #include <xenevtchn.h>
2595 #include <xengnttab.h>
2596 #include <xenforeignmemory.h>
2597 #include <stdint.h>
2598 #include <xen/hvm/hvm_info_table.h>
2599 #if !defined(HVM_MAX_VCPUS)
2600 # error HVM_MAX_VCPUS not defined
2601 #endif
2602 int main(void) {
2603   xc_interface *xc = NULL;
2604   xenforeignmemory_handle *xfmem;
2605   xenevtchn_handle *xe;
2606   xengnttab_handle *xg;
2607   xengnttab_grant_copy_segment_t* seg = NULL;
2608
2609   xs_daemon_open();
2610
2611   xc = xc_interface_open(0, 0, 0);
2612   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2613   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2614   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2615   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
2616
2617   xfmem = xenforeignmemory_open(0, 0);
2618   xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);
2619
2620   xe = xenevtchn_open(0, 0);
2621   xenevtchn_fd(xe);
2622
2623   xg = xengnttab_open(0, 0);
2624   xengnttab_grant_copy(xg, 0, seg);
2625
2626   return 0;
2627 }
2628 EOF
2629         compile_prog "" "$xen_libs $xen_stable_libs"
2630       then
2631       xen_ctrl_version=40800
2632       xen=enabled
2633     elif
2634         cat > $TMPC <<EOF &&
2635 /*
2636  * If we have stable libs the we don't want the libxc compat
2637  * layers, regardless of what CFLAGS we may have been given.
2638  */
2639 #undef XC_WANT_COMPAT_EVTCHN_API
2640 #undef XC_WANT_COMPAT_GNTTAB_API
2641 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
2642 #include <xenctrl.h>
2643 #include <xenstore.h>
2644 #include <xenevtchn.h>
2645 #include <xengnttab.h>
2646 #include <xenforeignmemory.h>
2647 #include <stdint.h>
2648 #include <xen/hvm/hvm_info_table.h>
2649 #if !defined(HVM_MAX_VCPUS)
2650 # error HVM_MAX_VCPUS not defined
2651 #endif
2652 int main(void) {
2653   xc_interface *xc = NULL;
2654   xenforeignmemory_handle *xfmem;
2655   xenevtchn_handle *xe;
2656   xengnttab_handle *xg;
2657
2658   xs_daemon_open();
2659
2660   xc = xc_interface_open(0, 0, 0);
2661   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2662   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2663   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2664   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
2665
2666   xfmem = xenforeignmemory_open(0, 0);
2667   xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);
2668
2669   xe = xenevtchn_open(0, 0);
2670   xenevtchn_fd(xe);
2671
2672   xg = xengnttab_open(0, 0);
2673   xengnttab_map_grant_ref(xg, 0, 0, 0);
2674
2675   return 0;
2676 }
2677 EOF
2678         compile_prog "" "$xen_libs $xen_stable_libs"
2679       then
2680       xen_ctrl_version=40701
2681       xen=enabled
2682
2683     # Xen 4.6
2684     elif
2685         cat > $TMPC <<EOF &&
2686 #include <xenctrl.h>
2687 #include <xenstore.h>
2688 #include <stdint.h>
2689 #include <xen/hvm/hvm_info_table.h>
2690 #if !defined(HVM_MAX_VCPUS)
2691 # error HVM_MAX_VCPUS not defined
2692 #endif
2693 int main(void) {
2694   xc_interface *xc;
2695   xs_daemon_open();
2696   xc = xc_interface_open(0, 0, 0);
2697   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2698   xc_gnttab_open(NULL, 0);
2699   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2700   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2701   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
2702   xc_reserved_device_memory_map(xc, 0, 0, 0, 0, NULL, 0);
2703   return 0;
2704 }
2705 EOF
2706         compile_prog "" "$xen_libs"
2707       then
2708       xen_ctrl_version=40600
2709       xen=enabled
2710
2711     # Xen 4.5
2712     elif
2713         cat > $TMPC <<EOF &&
2714 #include <xenctrl.h>
2715 #include <xenstore.h>
2716 #include <stdint.h>
2717 #include <xen/hvm/hvm_info_table.h>
2718 #if !defined(HVM_MAX_VCPUS)
2719 # error HVM_MAX_VCPUS not defined
2720 #endif
2721 int main(void) {
2722   xc_interface *xc;
2723   xs_daemon_open();
2724   xc = xc_interface_open(0, 0, 0);
2725   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2726   xc_gnttab_open(NULL, 0);
2727   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2728   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2729   xc_hvm_create_ioreq_server(xc, 0, 0, NULL);
2730   return 0;
2731 }
2732 EOF
2733         compile_prog "" "$xen_libs"
2734       then
2735       xen_ctrl_version=40500
2736       xen=enabled
2737
2738     elif
2739         cat > $TMPC <<EOF &&
2740 #include <xenctrl.h>
2741 #include <xenstore.h>
2742 #include <stdint.h>
2743 #include <xen/hvm/hvm_info_table.h>
2744 #if !defined(HVM_MAX_VCPUS)
2745 # error HVM_MAX_VCPUS not defined
2746 #endif
2747 int main(void) {
2748   xc_interface *xc;
2749   xs_daemon_open();
2750   xc = xc_interface_open(0, 0, 0);
2751   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2752   xc_gnttab_open(NULL, 0);
2753   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2754   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2755   return 0;
2756 }
2757 EOF
2758         compile_prog "" "$xen_libs"
2759       then
2760       xen_ctrl_version=40200
2761       xen=enabled
2762
2763     else
2764       if test "$xen" = "enabled" ; then
2765         feature_not_found "xen (unsupported version)" \
2766                           "Install a supported xen (xen 4.2 or newer)"
2767       fi
2768       xen=disabled
2769     fi
2770
2771     if test "$xen" = enabled; then
2772       if test $xen_ctrl_version -ge 40701  ; then
2773         xen_libs="$xen_libs $xen_stable_libs "
2774       fi
2775     fi
2776   fi
2777 fi
2778
2779 ##########################################
2780 # GNUTLS probe
2781
2782 if test "$gnutls" != "no"; then
2783     pass="no"
2784     if $pkg_config --exists "gnutls >= 3.1.18"; then
2785         gnutls_cflags=$($pkg_config --cflags gnutls)
2786         gnutls_libs=$($pkg_config --libs gnutls)
2787         # Packaging for the static libraries is not always correct.
2788         # At least ubuntu 18.04 ships only shared libraries.
2789         write_c_skeleton
2790         if compile_prog "" "$gnutls_libs" ; then
2791             pass="yes"
2792         fi
2793     fi
2794     if test "$pass" = "no" && test "$gnutls" = "yes"; then
2795         feature_not_found "gnutls" "Install gnutls devel >= 3.1.18"
2796     else
2797         gnutls="$pass"
2798     fi
2799 fi
2800
2801
2802 # If user didn't give a --disable/enable-gcrypt flag,
2803 # then mark as disabled if user requested nettle
2804 # explicitly
2805 if test -z "$gcrypt"
2806 then
2807     if test "$nettle" = "yes"
2808     then
2809         gcrypt="no"
2810     fi
2811 fi
2812
2813 # If user didn't give a --disable/enable-nettle flag,
2814 # then mark as disabled if user requested gcrypt
2815 # explicitly
2816 if test -z "$nettle"
2817 then
2818     if test "$gcrypt" = "yes"
2819     then
2820         nettle="no"
2821     fi
2822 fi
2823
2824 has_libgcrypt() {
2825     if ! has "libgcrypt-config"
2826     then
2827         return 1
2828     fi
2829
2830     if test -n "$cross_prefix"
2831     then
2832         host=$(libgcrypt-config --host)
2833         if test "$host-" != $cross_prefix
2834         then
2835             return 1
2836         fi
2837     fi
2838
2839     maj=`libgcrypt-config --version | awk -F . '{print $1}'`
2840     min=`libgcrypt-config --version | awk -F . '{print $2}'`
2841
2842     if test $maj != 1 || test $min -lt 5
2843     then
2844        return 1
2845     fi
2846
2847     return 0
2848 }
2849
2850
2851 if test "$nettle" != "no"; then
2852     pass="no"
2853     if $pkg_config --exists "nettle >= 2.7.1"; then
2854         nettle_cflags=$($pkg_config --cflags nettle)
2855         nettle_libs=$($pkg_config --libs nettle)
2856         nettle_version=$($pkg_config --modversion nettle)
2857         # Link test to make sure the given libraries work (e.g for static).
2858         write_c_skeleton
2859         if compile_prog "" "$nettle_libs" ; then
2860             if test -z "$gcrypt"; then
2861                gcrypt="no"
2862             fi
2863             pass="yes"
2864         fi
2865     fi
2866     if test "$pass" = "yes"
2867     then
2868         cat > $TMPC << EOF
2869 #include <nettle/xts.h>
2870 int main(void) {
2871   return 0;
2872 }
2873 EOF
2874         if compile_prog "$nettle_cflags" "$nettle_libs" ; then
2875             nettle_xts=yes
2876             qemu_private_xts=no
2877         fi
2878     fi
2879     if test "$pass" = "no" && test "$nettle" = "yes"; then
2880         feature_not_found "nettle" "Install nettle devel >= 2.7.1"
2881     else
2882         nettle="$pass"
2883     fi
2884 fi
2885
2886 if test "$gcrypt" != "no"; then
2887     pass="no"
2888     if has_libgcrypt; then
2889         gcrypt_cflags=$(libgcrypt-config --cflags)
2890         gcrypt_libs=$(libgcrypt-config --libs)
2891         # Debian has removed -lgpg-error from libgcrypt-config
2892         # as it "spreads unnecessary dependencies" which in
2893         # turn breaks static builds...
2894         if test "$static" = "yes"
2895         then
2896             gcrypt_libs="$gcrypt_libs -lgpg-error"
2897         fi
2898
2899         # Link test to make sure the given libraries work (e.g for static).
2900         write_c_skeleton
2901         if compile_prog "" "$gcrypt_libs" ; then
2902             pass="yes"
2903         fi
2904     fi
2905     if test "$pass" = "yes"; then
2906         gcrypt="yes"
2907         cat > $TMPC << EOF
2908 #include <gcrypt.h>
2909 int main(void) {
2910   gcry_mac_hd_t handle;
2911   gcry_mac_open(&handle, GCRY_MAC_HMAC_MD5,
2912                 GCRY_MAC_FLAG_SECURE, NULL);
2913   return 0;
2914 }
2915 EOF
2916         if compile_prog "$gcrypt_cflags" "$gcrypt_libs" ; then
2917             gcrypt_hmac=yes
2918         fi
2919         cat > $TMPC << EOF
2920 #include <gcrypt.h>
2921 int main(void) {
2922   gcry_cipher_hd_t handle;
2923   gcry_cipher_open(&handle, GCRY_CIPHER_AES, GCRY_CIPHER_MODE_XTS, 0);
2924   return 0;
2925 }
2926 EOF
2927         if compile_prog "$gcrypt_cflags" "$gcrypt_libs" ; then
2928             gcrypt_xts=yes
2929             qemu_private_xts=no
2930         fi
2931     elif test "$gcrypt" = "yes"; then
2932         feature_not_found "gcrypt" "Install gcrypt devel >= 1.5.0"
2933     else
2934         gcrypt="no"
2935     fi
2936 fi
2937
2938
2939 if test "$gcrypt" = "yes" && test "$nettle" = "yes"
2940 then
2941     error_exit "Only one of gcrypt & nettle can be enabled"
2942 fi
2943
2944 ##########################################
2945 # libtasn1 - only for the TLS creds/session test suite
2946
2947 tasn1=yes
2948 tasn1_cflags=""
2949 tasn1_libs=""
2950 if $pkg_config --exists "libtasn1"; then
2951     tasn1_cflags=$($pkg_config --cflags libtasn1)
2952     tasn1_libs=$($pkg_config --libs libtasn1)
2953 else
2954     tasn1=no
2955 fi
2956
2957
2958 ##########################################
2959 # PAM probe
2960
2961 if test "$auth_pam" != "no"; then
2962     cat > $TMPC <<EOF
2963 #include <security/pam_appl.h>
2964 #include <stdio.h>
2965 int main(void) {
2966    const char *service_name = "qemu";
2967    const char *user = "frank";
2968    const struct pam_conv pam_conv = { 0 };
2969    pam_handle_t *pamh = NULL;
2970    pam_start(service_name, user, &pam_conv, &pamh);
2971    return 0;
2972 }
2973 EOF
2974     if compile_prog "" "-lpam" ; then
2975         auth_pam=yes
2976     else
2977         if test "$auth_pam" = "yes"; then
2978             feature_not_found "PAM" "Install PAM development package"
2979         else
2980             auth_pam=no
2981         fi
2982     fi
2983 fi
2984
2985 ##########################################
2986 # VTE probe
2987
2988 if test "$vte" != "no"; then
2989     vteminversion="0.32.0"
2990     if $pkg_config --exists "vte-2.91"; then
2991       vtepackage="vte-2.91"
2992     else
2993       vtepackage="vte-2.90"
2994     fi
2995     if $pkg_config --exists "$vtepackage >= $vteminversion"; then
2996         vte_cflags=$($pkg_config --cflags $vtepackage)
2997         vte_libs=$($pkg_config --libs $vtepackage)
2998         vteversion=$($pkg_config --modversion $vtepackage)
2999         vte="yes"
3000     elif test "$vte" = "yes"; then
3001         feature_not_found "vte" "Install libvte-2.90/2.91 devel"
3002     else
3003         vte="no"
3004     fi
3005 fi
3006
3007 ##########################################
3008 # RDMA needs OpenFabrics libraries
3009 if test "$rdma" != "no" ; then
3010   cat > $TMPC <<EOF
3011 #include <rdma/rdma_cma.h>
3012 int main(void) { return 0; }
3013 EOF
3014   rdma_libs="-lrdmacm -libverbs -libumad"
3015   if compile_prog "" "$rdma_libs" ; then
3016     rdma="yes"
3017   else
3018     if test "$rdma" = "yes" ; then
3019         error_exit \
3020             " OpenFabrics librdmacm/libibverbs/libibumad not present." \
3021             " Your options:" \
3022             "  (1) Fast: Install infiniband packages (devel) from your distro." \
3023             "  (2) Cleanest: Install libraries from www.openfabrics.org" \
3024             "  (3) Also: Install softiwarp if you don't have RDMA hardware"
3025     fi
3026     rdma="no"
3027   fi
3028 fi
3029
3030 ##########################################
3031 # PVRDMA detection
3032
3033 cat > $TMPC <<EOF &&
3034 #include <sys/mman.h>
3035
3036 int
3037 main(void)
3038 {
3039     char buf = 0;
3040     void *addr = &buf;
3041     addr = mremap(addr, 0, 1, MREMAP_MAYMOVE | MREMAP_FIXED);
3042
3043     return 0;
3044 }
3045 EOF
3046
3047 if test "$rdma" = "yes" ; then
3048     case "$pvrdma" in
3049     "")
3050         if compile_prog "" ""; then
3051             pvrdma="yes"
3052         else
3053             pvrdma="no"
3054         fi
3055         ;;
3056     "yes")
3057         if ! compile_prog "" ""; then
3058             error_exit "PVRDMA is not supported since mremap is not implemented"
3059         fi
3060         pvrdma="yes"
3061         ;;
3062     "no")
3063         pvrdma="no"
3064         ;;
3065     esac
3066 else
3067     if test "$pvrdma" = "yes" ; then
3068         error_exit "PVRDMA requires rdma suppport"
3069     fi
3070     pvrdma="no"
3071 fi
3072
3073 # Let's see if enhanced reg_mr is supported
3074 if test "$pvrdma" = "yes" ; then
3075
3076 cat > $TMPC <<EOF &&
3077 #include <infiniband/verbs.h>
3078
3079 int
3080 main(void)
3081 {
3082     struct ibv_mr *mr;
3083     struct ibv_pd *pd = NULL;
3084     size_t length = 10;
3085     uint64_t iova = 0;
3086     int access = 0;
3087     void *addr = NULL;
3088
3089     mr = ibv_reg_mr_iova(pd, addr, length, iova, access);
3090
3091     ibv_dereg_mr(mr);
3092
3093     return 0;
3094 }
3095 EOF
3096     if ! compile_prog "" "-libverbs"; then
3097         QEMU_CFLAGS="$QEMU_CFLAGS -DLEGACY_RDMA_REG_MR"
3098     fi
3099 fi
3100
3101 ##########################################
3102 # xfsctl() probe, used for file-posix.c
3103 if test "$xfs" != "no" ; then
3104   cat > $TMPC << EOF
3105 #include <stddef.h>  /* NULL */
3106 #include <xfs/xfs.h>
3107 int main(void)
3108 {
3109     xfsctl(NULL, 0, 0, NULL);
3110     return 0;
3111 }
3112 EOF
3113   if compile_prog "" "" ; then
3114     xfs="yes"
3115   else
3116     if test "$xfs" = "yes" ; then
3117       feature_not_found "xfs" "Install xfsprogs/xfslibs devel"
3118     fi
3119     xfs=no
3120   fi
3121 fi
3122
3123 ##########################################
3124 # vde libraries probe
3125 if test "$vde" != "no" ; then
3126   vde_libs="-lvdeplug"
3127   cat > $TMPC << EOF
3128 #include <libvdeplug.h>
3129 int main(void)
3130 {
3131     struct vde_open_args a = {0, 0, 0};
3132     char s[] = "";
3133     vde_open(s, s, &a);
3134     return 0;
3135 }
3136 EOF
3137   if compile_prog "" "$vde_libs" ; then
3138     vde=yes
3139   else
3140     if test "$vde" = "yes" ; then
3141       feature_not_found "vde" "Install vde (Virtual Distributed Ethernet) devel"
3142     fi
3143     vde=no
3144   fi
3145 fi
3146
3147 ##########################################
3148 # netmap support probe
3149 # Apart from looking for netmap headers, we make sure that the host API version
3150 # supports the netmap backend (>=11). The upper bound (15) is meant to simulate
3151 # a minor/major version number. Minor new features will be marked with values up
3152 # to 15, and if something happens that requires a change to the backend we will
3153 # move above 15, submit the backend fixes and modify this two bounds.
3154 if test "$netmap" != "no" ; then
3155   cat > $TMPC << EOF
3156 #include <inttypes.h>
3157 #include <net/if.h>
3158 #include <net/netmap.h>
3159 #include <net/netmap_user.h>
3160 #if (NETMAP_API < 11) || (NETMAP_API > 15)
3161 #error
3162 #endif
3163 int main(void) { return 0; }
3164 EOF
3165   if compile_prog "" "" ; then
3166     netmap=yes
3167   else
3168     if test "$netmap" = "yes" ; then
3169       feature_not_found "netmap"
3170     fi
3171     netmap=no
3172   fi
3173 fi
3174
3175 ##########################################
3176 # detect CoreAudio
3177 if test "$coreaudio" != "no" ; then
3178   coreaudio_libs="-framework CoreAudio"
3179   cat > $TMPC << EOF
3180 #include <CoreAudio/CoreAudio.h>
3181 int main(void)
3182 {
3183   return (int)AudioGetCurrentHostTime();
3184 }
3185 EOF
3186   if compile_prog "" "$coreaudio_libs" ; then
3187     coreaudio=yes
3188   else
3189     coreaudio=no
3190   fi
3191 fi
3192
3193 ##########################################
3194 # Sound support libraries probe
3195
3196 audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/,/ /g')
3197 for drv in $audio_drv_list; do
3198     case $drv in
3199     alsa | try-alsa)
3200     if $pkg_config alsa --exists; then
3201         alsa_libs=$($pkg_config alsa --libs)
3202         alsa_cflags=$($pkg_config alsa --cflags)
3203         alsa=yes
3204         if test "$drv" = "try-alsa"; then
3205             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-alsa/alsa/')
3206         fi
3207     else
3208         if test "$drv" = "try-alsa"; then
3209             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-alsa//')
3210         else
3211             error_exit "$drv check failed" \
3212                 "Make sure to have the $drv libs and headers installed."
3213         fi
3214     fi
3215     ;;
3216
3217     pa | try-pa)
3218     if $pkg_config libpulse --exists; then
3219         libpulse=yes
3220         pulse_libs=$($pkg_config libpulse --libs)
3221         pulse_cflags=$($pkg_config libpulse --cflags)
3222         if test "$drv" = "try-pa"; then
3223             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-pa/pa/')
3224         fi
3225     else
3226         if test "$drv" = "try-pa"; then
3227             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-pa//')
3228         else
3229             error_exit "$drv check failed" \
3230                 "Make sure to have the $drv libs and headers installed."
3231         fi
3232     fi
3233     ;;
3234
3235     sdl)
3236     if test "$sdl" = "no"; then
3237         error_exit "sdl not found or disabled, can not use sdl audio driver"
3238     fi
3239     ;;
3240
3241     try-sdl)
3242     if test "$sdl" = "no"; then
3243         audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-sdl//')
3244     else
3245         audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-sdl/sdl/')
3246     fi
3247     ;;
3248
3249     coreaudio | try-coreaudio)
3250     if test "$coreaudio" = "no"; then
3251       if test "$drv" = "try-coreaudio"; then
3252         audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-coreaudio//')
3253       else
3254         error_exit "$drv check failed" \
3255                 "Make sure to have the $drv is available."
3256       fi
3257     else
3258       coreaudio_libs="-framework CoreAudio"
3259       if test "$drv" = "try-coreaudio"; then
3260         audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-coreaudio/coreaudio/')
3261       fi
3262     fi
3263     ;;
3264
3265     dsound)
3266       dsound_libs="-lole32 -ldxguid"
3267       audio_win_int="yes"
3268     ;;
3269
3270     oss)
3271       oss_libs="$oss_lib"
3272     ;;
3273
3274     jack | try-jack)
3275     if $pkg_config jack --exists; then
3276         libjack=yes
3277         jack_libs=$($pkg_config jack --libs)
3278         if test "$drv" = "try-jack"; then
3279             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-jack/jack/')
3280         fi
3281     else
3282         if test "$drv" = "try-jack"; then
3283             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-jack//')
3284         else
3285             error_exit "$drv check failed" \
3286                 "Make sure to have the $drv libs and headers installed."
3287         fi
3288     fi
3289     ;;
3290
3291     *)
3292     echo "$audio_possible_drivers" | grep -q "\<$drv\>" || {
3293         error_exit "Unknown driver '$drv' selected" \
3294             "Possible drivers are: $audio_possible_drivers"
3295     }
3296     ;;
3297     esac
3298 done
3299
3300 ##########################################
3301 # glib support probe
3302
3303 glib_req_ver=2.48
3304 glib_modules=gthread-2.0
3305 if test "$modules" = yes; then
3306     glib_modules="$glib_modules gmodule-export-2.0"
3307 fi
3308 if test "$plugins" = yes; then
3309     glib_modules="$glib_modules gmodule-2.0"
3310 fi
3311
3312 for i in $glib_modules; do
3313     if $pkg_config --atleast-version=$glib_req_ver $i; then
3314         glib_cflags=$($pkg_config --cflags $i)
3315         glib_libs=$($pkg_config --libs $i)
3316     else
3317         error_exit "glib-$glib_req_ver $i is required to compile QEMU"
3318     fi
3319 done
3320
3321 # This workaround is required due to a bug in pkg-config file for glib as it
3322 # doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
3323
3324 if test "$static" = yes && test "$mingw32" = yes; then
3325     glib_cflags="-DGLIB_STATIC_COMPILATION $glib_cflags"
3326 fi
3327
3328 if ! test "$gio" = "no"; then
3329     pass=no
3330     if $pkg_config --atleast-version=$glib_req_ver gio-2.0; then
3331         gio_cflags=$($pkg_config --cflags gio-2.0)
3332         gio_libs=$($pkg_config --libs gio-2.0)
3333         gdbus_codegen=$($pkg_config --variable=gdbus_codegen gio-2.0)
3334         if [ ! -x "$gdbus_codegen" ]; then
3335             gdbus_codegen=
3336         fi
3337         # Check that the libraries actually work -- Ubuntu 18.04 ships
3338         # with pkg-config --static --libs data for gio-2.0 that is missing
3339         # -lblkid and will give a link error.
3340         cat > $TMPC <<EOF
3341 #include <gio/gio.h>
3342 int main(void)
3343 {
3344     g_dbus_proxy_new_sync(0, 0, 0, 0, 0, 0, 0, 0);
3345     return 0;
3346 }
3347 EOF
3348         if compile_prog "$gio_cflags" "$gio_libs" ; then
3349             pass=yes
3350         else
3351             pass=no
3352         fi
3353
3354         if test "$pass" = "yes" &&
3355             $pkg_config --atleast-version=$glib_req_ver gio-unix-2.0; then
3356             gio_cflags="$gio_cflags $($pkg_config --cflags gio-unix-2.0)"
3357             gio_libs="$gio_libs $($pkg_config --libs gio-unix-2.0)"
3358         fi
3359     fi
3360
3361     if test "$pass" = "no"; then
3362         if test "$gio" = "yes"; then
3363             feature_not_found "gio" "Install libgio >= 2.0"
3364         else
3365             gio=no
3366         fi
3367     else
3368         gio=yes
3369     fi
3370 fi
3371
3372 # Sanity check that the current size_t matches the
3373 # size that glib thinks it should be. This catches
3374 # problems on multi-arch where people try to build
3375 # 32-bit QEMU while pointing at 64-bit glib headers
3376 cat > $TMPC <<EOF
3377 #include <glib.h>
3378 #include <unistd.h>
3379
3380 #define QEMU_BUILD_BUG_ON(x) \
3381   typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
3382
3383 int main(void) {
3384    QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
3385    return 0;
3386 }
3387 EOF
3388
3389 if ! compile_prog "$glib_cflags" "$glib_libs" ; then
3390     error_exit "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T."\
3391                "You probably need to set PKG_CONFIG_LIBDIR"\
3392                "to point to the right pkg-config files for your"\
3393                "build target"
3394 fi
3395
3396 # Silence clang 3.5.0 warnings about glib attribute __alloc_size__ usage
3397 cat > $TMPC << EOF
3398 #include <glib.h>
3399 int main(void) { return 0; }
3400 EOF
3401 if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
3402     if cc_has_warning_flag "-Wno-unknown-attributes"; then
3403         glib_cflags="-Wno-unknown-attributes $glib_cflags"
3404         CONFIGURE_CFLAGS="-Wno-unknown-attributes $CONFIGURE_CFLAGS"
3405     fi
3406 fi
3407
3408 # Silence clang warnings triggered by glib < 2.57.2
3409 cat > $TMPC << EOF
3410 #include <glib.h>
3411 typedef struct Foo {
3412     int i;
3413 } Foo;
3414 static void foo_free(Foo *f)
3415 {
3416     g_free(f);
3417 }
3418 G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free);
3419 int main(void) { return 0; }
3420 EOF
3421 if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
3422     if cc_has_warning_flag "-Wno-unused-function"; then
3423         glib_cflags="$glib_cflags -Wno-unused-function"
3424         CONFIGURE_CFLAGS="$CONFIGURE_CFLAGS -Wno-unused-function"
3425     fi
3426 fi
3427
3428 ##########################################
3429 # SHA command probe for modules
3430 if test "$modules" = yes; then
3431     shacmd_probe="sha1sum sha1 shasum"
3432     for c in $shacmd_probe; do
3433         if has $c; then
3434             shacmd="$c"
3435             break
3436         fi
3437     done
3438     if test "$shacmd" = ""; then
3439         error_exit "one of the checksum commands is required to enable modules: $shacmd_probe"
3440     fi
3441 fi
3442
3443 ##########################################
3444 # pthread probe
3445 PTHREADLIBS_LIST="-pthread -lpthread -lpthreadGC2"
3446
3447 pthread=no
3448 cat > $TMPC << EOF
3449 #include <pthread.h>
3450 static void *f(void *p) { return NULL; }
3451 int main(void) {
3452   pthread_t thread;
3453   pthread_create(&thread, 0, f, 0);
3454   return 0;
3455 }
3456 EOF
3457 if compile_prog "" "" ; then
3458   pthread=yes
3459 else
3460   for pthread_lib in $PTHREADLIBS_LIST; do
3461     if compile_prog "" "$pthread_lib" ; then
3462       pthread=yes
3463       break
3464     fi
3465   done
3466 fi
3467
3468 if test "$mingw32" != yes && test "$pthread" = no; then
3469   error_exit "pthread check failed" \
3470       "Make sure to have the pthread libs and headers installed."
3471 fi
3472
3473 # check for pthread_setname_np with thread id
3474 pthread_setname_np_w_tid=no
3475 cat > $TMPC << EOF
3476 #include <pthread.h>
3477
3478 static void *f(void *p) { return NULL; }
3479 int main(void)
3480 {
3481     pthread_t thread;
3482     pthread_create(&thread, 0, f, 0);
3483     pthread_setname_np(thread, "QEMU");
3484     return 0;
3485 }
3486 EOF
3487 if compile_prog "" "$pthread_lib" ; then
3488   pthread_setname_np_w_tid=yes
3489 fi
3490
3491 # check for pthread_setname_np without thread id
3492 pthread_setname_np_wo_tid=no
3493 cat > $TMPC << EOF
3494 #include <pthread.h>
3495
3496 static void *f(void *p) { pthread_setname_np("QEMU"); return NULL; }
3497 int main(void)
3498 {
3499     pthread_t thread;
3500     pthread_create(&thread, 0, f, 0);
3501     return 0;
3502 }
3503 EOF
3504 if compile_prog "" "$pthread_lib" ; then
3505   pthread_setname_np_wo_tid=yes
3506 fi
3507
3508 ##########################################
3509 # libssh probe
3510 if test "$libssh" != "no" ; then
3511   if $pkg_config --exists libssh; then
3512     libssh_cflags=$($pkg_config libssh --cflags)
3513     libssh_libs=$($pkg_config libssh --libs)
3514     libssh=yes
3515   else
3516     if test "$libssh" = "yes" ; then
3517       error_exit "libssh required for --enable-libssh"
3518     fi
3519     libssh=no
3520   fi
3521 fi
3522
3523 ##########################################
3524 # Check for libssh 0.8
3525 # This is done like this instead of using the LIBSSH_VERSION_* and
3526 # SSH_VERSION_* macros because some distributions in the past shipped
3527 # snapshots of the future 0.8 from Git, and those snapshots did not
3528 # have updated version numbers (still referring to 0.7.0).
3529
3530 if test "$libssh" = "yes"; then
3531   cat > $TMPC <<EOF
3532 #include <libssh/libssh.h>
3533 int main(void) { return ssh_get_server_publickey(NULL, NULL); }
3534 EOF
3535   if compile_prog "$libssh_cflags" "$libssh_libs"; then
3536     libssh_cflags="-DHAVE_LIBSSH_0_8 $libssh_cflags"
3537   fi
3538 fi
3539
3540 ##########################################
3541 # linux-aio probe
3542
3543 if test "$linux_aio" != "no" ; then
3544   cat > $TMPC <<EOF
3545 #include <libaio.h>
3546 #include <sys/eventfd.h>
3547 #include <stddef.h>
3548 int main(void) { io_setup(0, NULL); io_set_eventfd(NULL, 0); eventfd(0, 0); return 0; }
3549 EOF
3550   if compile_prog "" "-laio" ; then
3551     linux_aio=yes
3552   else
3553     if test "$linux_aio" = "yes" ; then
3554       feature_not_found "linux AIO" "Install libaio devel"
3555     fi
3556     linux_aio=no
3557   fi
3558 fi
3559 ##########################################
3560 # linux-io-uring probe
3561
3562 if test "$linux_io_uring" != "no" ; then
3563   if $pkg_config liburing; then
3564     linux_io_uring_cflags=$($pkg_config --cflags liburing)
3565     linux_io_uring_libs=$($pkg_config --libs liburing)
3566     linux_io_uring=yes
3567   else
3568     if test "$linux_io_uring" = "yes" ; then
3569       feature_not_found "linux io_uring" "Install liburing devel"
3570     fi
3571     linux_io_uring=no
3572   fi
3573 fi
3574
3575 ##########################################
3576 # TPM emulation is only on POSIX
3577
3578 if test "$tpm" = ""; then
3579   if test "$mingw32" = "yes"; then
3580     tpm=no
3581   else
3582     tpm=yes
3583   fi
3584 elif test "$tpm" = "yes"; then
3585   if test "$mingw32" = "yes" ; then
3586     error_exit "TPM emulation only available on POSIX systems"
3587   fi
3588 fi
3589
3590 ##########################################
3591 # iovec probe
3592 cat > $TMPC <<EOF
3593 #include <sys/types.h>
3594 #include <sys/uio.h>
3595 #include <unistd.h>
3596 int main(void) { return sizeof(struct iovec); }
3597 EOF
3598 iovec=no
3599 if compile_prog "" "" ; then
3600   iovec=yes
3601 fi
3602
3603 ##########################################
3604 # fdt probe
3605
3606 case "$fdt" in
3607   auto | enabled | internal)
3608     # Simpler to always update submodule, even if not needed.
3609     if test "$git_submodules_action" != "ignore"; then
3610       git_submodules="${git_submodules} dtc"
3611     fi
3612     ;;
3613 esac
3614
3615 ##########################################
3616 # opengl probe (for sdl2, gtk, milkymist-tmu2)
3617
3618 gbm="no"
3619 if $pkg_config gbm; then
3620     gbm_cflags="$($pkg_config --cflags gbm)"
3621     gbm_libs="$($pkg_config --libs gbm)"
3622     gbm="yes"
3623 fi
3624
3625 if test "$opengl" != "no" ; then
3626   epoxy=no
3627   if $pkg_config epoxy; then
3628     cat > $TMPC << EOF
3629 #include <epoxy/egl.h>
3630 int main(void) { return 0; }
3631 EOF
3632     if compile_prog "" "" ; then
3633       epoxy=yes
3634     fi
3635   fi
3636
3637   if test "$epoxy" = "yes" ; then
3638     opengl_cflags="$($pkg_config --cflags epoxy)"
3639     opengl_libs="$($pkg_config --libs epoxy)"
3640     opengl=yes
3641   else
3642     if test "$opengl" = "yes" ; then
3643       feature_not_found "opengl" "Please install epoxy with EGL"
3644     fi
3645     opengl_cflags=""
3646     opengl_libs=""
3647     opengl=no
3648   fi
3649 fi
3650
3651 ##########################################
3652 # libxml2 probe
3653 if test "$libxml2" != "no" ; then
3654     if $pkg_config --exists libxml-2.0; then
3655         libxml2="yes"
3656         libxml2_cflags=$($pkg_config --cflags libxml-2.0)
3657         libxml2_libs=$($pkg_config --libs libxml-2.0)
3658     else
3659         if test "$libxml2" = "yes"; then
3660             feature_not_found "libxml2" "Install libxml2 devel"
3661         fi
3662         libxml2="no"
3663     fi
3664 fi
3665
3666 # Check for inotify functions when we are building linux-user
3667 # emulator.  This is done because older glibc versions don't
3668 # have syscall stubs for these implemented.  In that case we
3669 # don't provide them even if kernel supports them.
3670 #
3671 inotify=no
3672 cat > $TMPC << EOF
3673 #include <sys/inotify.h>
3674
3675 int
3676 main(void)
3677 {
3678         /* try to start inotify */
3679         return inotify_init();
3680 }
3681 EOF
3682 if compile_prog "" "" ; then
3683   inotify=yes
3684 fi
3685
3686 inotify1=no
3687 cat > $TMPC << EOF
3688 #include <sys/inotify.h>
3689
3690 int
3691 main(void)
3692 {
3693     /* try to start inotify */
3694     return inotify_init1(0);
3695 }
3696 EOF
3697 if compile_prog "" "" ; then
3698   inotify1=yes
3699 fi
3700
3701 # check if pipe2 is there
3702 pipe2=no
3703 cat > $TMPC << EOF
3704 #include <unistd.h>
3705 #include <fcntl.h>
3706
3707 int main(void)
3708 {
3709     int pipefd[2];
3710     return pipe2(pipefd, O_CLOEXEC);
3711 }
3712 EOF
3713 if compile_prog "" "" ; then
3714   pipe2=yes
3715 fi
3716
3717 # check if accept4 is there
3718 accept4=no
3719 cat > $TMPC << EOF
3720 #include <sys/socket.h>
3721 #include <stddef.h>
3722
3723 int main(void)
3724 {
3725     accept4(0, NULL, NULL, SOCK_CLOEXEC);
3726     return 0;
3727 }
3728 EOF
3729 if compile_prog "" "" ; then
3730   accept4=yes
3731 fi
3732
3733 # check if tee/splice is there. vmsplice was added same time.
3734 splice=no
3735 cat > $TMPC << EOF
3736 #include <unistd.h>
3737 #include <fcntl.h>
3738 #include <limits.h>
3739
3740 int main(void)
3741 {
3742     int len, fd = 0;
3743     len = tee(STDIN_FILENO, STDOUT_FILENO, INT_MAX, SPLICE_F_NONBLOCK);
3744     splice(STDIN_FILENO, NULL, fd, NULL, len, SPLICE_F_MOVE);
3745     return 0;
3746 }
3747 EOF
3748 if compile_prog "" "" ; then
3749   splice=yes
3750 fi
3751
3752 ##########################################
3753 # libnuma probe
3754
3755 if test "$numa" != "no" ; then
3756   cat > $TMPC << EOF
3757 #include <numa.h>
3758 int main(void) { return numa_available(); }
3759 EOF
3760
3761   if compile_prog "" "-lnuma" ; then
3762     numa=yes
3763     numa_libs="-lnuma"
3764   else
3765     if test "$numa" = "yes" ; then
3766       feature_not_found "numa" "install numactl devel"
3767     fi
3768     numa=no
3769   fi
3770 fi
3771
3772 malloc=system
3773 if test "$tcmalloc" = "yes" && test "$jemalloc" = "yes" ; then
3774     echo "ERROR: tcmalloc && jemalloc can't be used at the same time"
3775     exit 1
3776 elif test "$tcmalloc" = "yes" ; then
3777     malloc=tcmalloc
3778 elif test "$jemalloc" = "yes" ; then
3779     malloc=jemalloc
3780 fi
3781
3782 ##########################################
3783 # signalfd probe
3784 signalfd="no"
3785 cat > $TMPC << EOF
3786 #include <unistd.h>
3787 #include <sys/syscall.h>
3788 #include <signal.h>
3789 int main(void) { return syscall(SYS_signalfd, -1, NULL, _NSIG / 8); }
3790 EOF
3791
3792 if compile_prog "" "" ; then
3793   signalfd=yes
3794 fi
3795
3796 # check if optreset global is declared by <getopt.h>
3797 optreset="no"
3798 cat > $TMPC << EOF
3799 #include <getopt.h>
3800 int main(void) { return optreset; }
3801 EOF
3802
3803 if compile_prog "" "" ; then
3804   optreset=yes
3805 fi
3806
3807 # check if eventfd is supported
3808 eventfd=no
3809 cat > $TMPC << EOF
3810 #include <sys/eventfd.h>
3811
3812 int main(void)
3813 {
3814     return eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
3815 }
3816 EOF
3817 if compile_prog "" "" ; then
3818   eventfd=yes
3819 fi
3820
3821 # check if memfd is supported
3822 memfd=no
3823 cat > $TMPC << EOF
3824 #include <sys/mman.h>
3825
3826 int main(void)
3827 {
3828     return memfd_create("foo", MFD_ALLOW_SEALING);
3829 }
3830 EOF
3831 if compile_prog "" "" ; then
3832   memfd=yes
3833 fi
3834
3835 # check for usbfs
3836 have_usbfs=no
3837 if test "$linux_user" = "yes"; then
3838   cat > $TMPC << EOF
3839 #include <linux/usbdevice_fs.h>
3840
3841 #ifndef USBDEVFS_GET_CAPABILITIES
3842 #error "USBDEVFS_GET_CAPABILITIES undefined"
3843 #endif
3844
3845 #ifndef USBDEVFS_DISCONNECT_CLAIM
3846 #error "USBDEVFS_DISCONNECT_CLAIM undefined"
3847 #endif
3848
3849 int main(void)
3850 {
3851     return 0;
3852 }
3853 EOF
3854   if compile_prog "" ""; then
3855     have_usbfs=yes
3856   fi
3857 fi
3858
3859 # check for fallocate
3860 fallocate=no
3861 cat > $TMPC << EOF
3862 #include <fcntl.h>
3863
3864 int main(void)
3865 {
3866     fallocate(0, 0, 0, 0);
3867     return 0;
3868 }
3869 EOF
3870 if compile_prog "" "" ; then
3871   fallocate=yes
3872 fi
3873
3874 # check for fallocate hole punching
3875 fallocate_punch_hole=no
3876 cat > $TMPC << EOF
3877 #include <fcntl.h>
3878 #include <linux/falloc.h>
3879
3880 int main(void)
3881 {
3882     fallocate(0, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE, 0, 0);
3883     return 0;
3884 }
3885 EOF
3886 if compile_prog "" "" ; then
3887   fallocate_punch_hole=yes
3888 fi
3889
3890 # check that fallocate supports range zeroing inside the file
3891 fallocate_zero_range=no
3892 cat > $TMPC << EOF
3893 #include <fcntl.h>
3894 #include <linux/falloc.h>
3895
3896 int main(void)
3897 {
3898     fallocate(0, FALLOC_FL_ZERO_RANGE, 0, 0);
3899     return 0;
3900 }
3901 EOF
3902 if compile_prog "" "" ; then
3903   fallocate_zero_range=yes
3904 fi
3905
3906 # check for posix_fallocate
3907 posix_fallocate=no
3908 cat > $TMPC << EOF
3909 #include <fcntl.h>
3910
3911 int main(void)
3912 {
3913     posix_fallocate(0, 0, 0);
3914     return 0;
3915 }
3916 EOF
3917 if compile_prog "" "" ; then
3918     posix_fallocate=yes
3919 fi
3920
3921 # check for sync_file_range
3922 sync_file_range=no
3923 cat > $TMPC << EOF
3924 #include <fcntl.h>
3925
3926 int main(void)
3927 {
3928     sync_file_range(0, 0, 0, 0);
3929     return 0;
3930 }
3931 EOF
3932 if compile_prog "" "" ; then
3933   sync_file_range=yes
3934 fi
3935
3936 # check for linux/fiemap.h and FS_IOC_FIEMAP
3937 fiemap=no
3938 cat > $TMPC << EOF
3939 #include <sys/ioctl.h>
3940 #include <linux/fs.h>
3941 #include <linux/fiemap.h>
3942
3943 int main(void)
3944 {
3945     ioctl(0, FS_IOC_FIEMAP, 0);
3946     return 0;
3947 }
3948 EOF
3949 if compile_prog "" "" ; then
3950   fiemap=yes
3951 fi
3952
3953 # check for dup3
3954 dup3=no
3955 cat > $TMPC << EOF
3956 #include <unistd.h>
3957
3958 int main(void)
3959 {
3960     dup3(0, 0, 0);
3961     return 0;
3962 }
3963 EOF
3964 if compile_prog "" "" ; then
3965   dup3=yes
3966 fi
3967
3968 # check for ppoll support
3969 ppoll=no
3970 cat > $TMPC << EOF
3971 #include <poll.h>
3972
3973 int main(void)
3974 {
3975     struct pollfd pfd = { .fd = 0, .events = 0, .revents = 0 };
3976     ppoll(&pfd, 1, 0, 0);
3977     return 0;
3978 }
3979 EOF
3980 if compile_prog "" "" ; then
3981   ppoll=yes
3982 fi
3983
3984 # check for prctl(PR_SET_TIMERSLACK , ... ) support
3985 prctl_pr_set_timerslack=no
3986 cat > $TMPC << EOF
3987 #include <sys/prctl.h>
3988
3989 int main(void)
3990 {
3991     prctl(PR_SET_TIMERSLACK, 1, 0, 0, 0);
3992     return 0;
3993 }
3994 EOF
3995 if compile_prog "" "" ; then
3996   prctl_pr_set_timerslack=yes
3997 fi
3998
3999 # check for epoll support
4000 epoll=no
4001 cat > $TMPC << EOF
4002 #include <sys/epoll.h>
4003
4004 int main(void)
4005 {
4006     epoll_create(0);
4007     return 0;
4008 }
4009 EOF
4010 if compile_prog "" "" ; then
4011   epoll=yes
4012 fi
4013
4014 # epoll_create1 is a later addition
4015 # so we must check separately for its presence
4016 epoll_create1=no
4017 cat > $TMPC << EOF
4018 #include <sys/epoll.h>
4019
4020 int main(void)
4021 {
4022     /* Note that we use epoll_create1 as a value, not as
4023      * a function being called. This is necessary so that on
4024      * old SPARC glibc versions where the function was present in
4025      * the library but not declared in the header file we will
4026      * fail the configure check. (Otherwise we will get a compiler
4027      * warning but not an error, and will proceed to fail the
4028      * qemu compile where we compile with -Werror.)
4029      */
4030     return (int)(uintptr_t)&epoll_create1;
4031 }
4032 EOF
4033 if compile_prog "" "" ; then
4034   epoll_create1=yes
4035 fi
4036
4037 # check for sendfile support
4038 sendfile=no
4039 cat > $TMPC << EOF
4040 #include <sys/sendfile.h>
4041
4042 int main(void)
4043 {
4044     return sendfile(0, 0, 0, 0);
4045 }
4046 EOF
4047 if compile_prog "" "" ; then
4048   sendfile=yes
4049 fi
4050
4051 # check for timerfd support (glibc 2.8 and newer)
4052 timerfd=no
4053 cat > $TMPC << EOF
4054 #include <sys/timerfd.h>
4055
4056 int main(void)
4057 {
4058     return(timerfd_create(CLOCK_REALTIME, 0));
4059 }
4060 EOF
4061 if compile_prog "" "" ; then
4062   timerfd=yes
4063 fi
4064
4065 # check for setns and unshare support
4066 setns=no
4067 cat > $TMPC << EOF
4068 #include <sched.h>
4069
4070 int main(void)
4071 {
4072     int ret;
4073     ret = setns(0, 0);
4074     ret = unshare(0);
4075     return ret;
4076 }
4077 EOF
4078 if compile_prog "" "" ; then
4079   setns=yes
4080 fi
4081
4082 # clock_adjtime probe
4083 clock_adjtime=no
4084 cat > $TMPC <<EOF
4085 #include <time.h>
4086 #include <sys/timex.h>
4087
4088 int main(void)
4089 {
4090     return clock_adjtime(0, 0);
4091 }
4092 EOF
4093 clock_adjtime=no
4094 if compile_prog "" "" ; then
4095   clock_adjtime=yes
4096 fi
4097
4098 # syncfs probe
4099 syncfs=no
4100 cat > $TMPC <<EOF
4101 #include <unistd.h>
4102
4103 int main(void)
4104 {
4105     return syncfs(0);
4106 }
4107 EOF
4108 syncfs=no
4109 if compile_prog "" "" ; then
4110   syncfs=yes
4111 fi
4112
4113 # Search for bswap_32 function
4114 byteswap_h=no
4115 cat > $TMPC << EOF
4116 #include <byteswap.h>
4117 int main(void) { return bswap_32(0); }
4118 EOF
4119 if compile_prog "" "" ; then
4120   byteswap_h=yes
4121 fi
4122
4123 # Search for bswap32 function
4124 bswap_h=no
4125 cat > $TMPC << EOF
4126 #include <sys/endian.h>
4127 #include <sys/types.h>
4128 #include <machine/bswap.h>
4129 int main(void) { return bswap32(0); }
4130 EOF
4131 if compile_prog "" "" ; then
4132   bswap_h=yes
4133 fi
4134
4135 # Check whether we have openpty() in either libc or libutil
4136 cat > $TMPC << EOF
4137 extern int openpty(int *am, int *as, char *name, void *termp, void *winp);
4138 int main(void) { return openpty(0, 0, 0, 0, 0); }
4139 EOF
4140
4141 have_openpty="no"
4142 if compile_prog "" "" ; then
4143   have_openpty="yes"
4144 else
4145   if compile_prog "" "-lutil" ; then
4146     have_openpty="yes"
4147   fi
4148 fi
4149
4150 ##########################################
4151 # spice probe
4152 if test "$spice" != "no" ; then
4153   cat > $TMPC << EOF
4154 #include <spice.h>
4155 int main(void) { spice_server_new(); return 0; }
4156 EOF
4157   spice_cflags=$($pkg_config --cflags spice-protocol spice-server 2>/dev/null)
4158   spice_libs=$($pkg_config --libs spice-protocol spice-server 2>/dev/null)
4159   if $pkg_config --atleast-version=0.12.5 spice-server && \
4160      $pkg_config --atleast-version=0.12.3 spice-protocol && \
4161      compile_prog "$spice_cflags" "$spice_libs" ; then
4162     spice="yes"
4163   else
4164     if test "$spice" = "yes" ; then
4165       feature_not_found "spice" \
4166           "Install spice-server(>=0.12.5) and spice-protocol(>=0.12.3) devel"
4167     fi
4168     spice="no"
4169   fi
4170 fi
4171
4172 # check for smartcard support
4173 if test "$smartcard" != "no"; then
4174     if $pkg_config --atleast-version=2.5.1 libcacard; then
4175         libcacard_cflags=$($pkg_config --cflags libcacard)
4176         libcacard_libs=$($pkg_config --libs libcacard)
4177         smartcard="yes"
4178     else
4179         if test "$smartcard" = "yes"; then
4180             feature_not_found "smartcard" "Install libcacard devel"
4181         fi
4182         smartcard="no"
4183     fi
4184 fi
4185
4186 # check for libusb
4187 if test "$libusb" != "no" ; then
4188     if $pkg_config --atleast-version=1.0.13 libusb-1.0; then
4189         libusb="yes"
4190         libusb_cflags=$($pkg_config --cflags libusb-1.0)
4191         libusb_libs=$($pkg_config --libs libusb-1.0)
4192     else
4193         if test "$libusb" = "yes"; then
4194             feature_not_found "libusb" "Install libusb devel >= 1.0.13"
4195         fi
4196         libusb="no"
4197     fi
4198 fi
4199
4200 # check for usbredirparser for usb network redirection support
4201 if test "$usb_redir" != "no" ; then
4202     if $pkg_config --atleast-version=0.6 libusbredirparser-0.5; then
4203         usb_redir="yes"
4204         usb_redir_cflags=$($pkg_config --cflags libusbredirparser-0.5)
4205         usb_redir_libs=$($pkg_config --libs libusbredirparser-0.5)
4206     else
4207         if test "$usb_redir" = "yes"; then
4208             feature_not_found "usb-redir" "Install usbredir devel"
4209         fi
4210         usb_redir="no"
4211     fi
4212 fi
4213
4214 ##########################################
4215 # check if we have VSS SDK headers for win
4216
4217 if test "$mingw32" = "yes" && test "$guest_agent" != "no" && \
4218         test "$vss_win32_sdk" != "no" ; then
4219   case "$vss_win32_sdk" in
4220     "")   vss_win32_include="-isystem $source_path" ;;
4221     *\ *) # The SDK is installed in "Program Files" by default, but we cannot
4222           # handle path with spaces. So we symlink the headers into ".sdk/vss".
4223           vss_win32_include="-isystem $source_path/.sdk/vss"
4224           symlink "$vss_win32_sdk/inc" "$source_path/.sdk/vss/inc"
4225           ;;
4226     *)    vss_win32_include="-isystem $vss_win32_sdk"
4227   esac
4228   cat > $TMPC << EOF
4229 #define __MIDL_user_allocate_free_DEFINED__
4230 #include <inc/win2003/vss.h>
4231 int main(void) { return VSS_CTX_BACKUP; }
4232 EOF
4233   if compile_prog "$vss_win32_include" "" ; then
4234     guest_agent_with_vss="yes"
4235     QEMU_CFLAGS="$QEMU_CFLAGS $vss_win32_include"
4236     libs_qga="-lole32 -loleaut32 -lshlwapi -lstdc++ -Wl,--enable-stdcall-fixup $libs_qga"
4237     qga_vss_provider="qga/vss-win32/qga-vss.dll qga/vss-win32/qga-vss.tlb"
4238   else
4239     if test "$vss_win32_sdk" != "" ; then
4240       echo "ERROR: Please download and install Microsoft VSS SDK:"
4241       echo "ERROR:   http://www.microsoft.com/en-us/download/details.aspx?id=23490"
4242       echo "ERROR: On POSIX-systems, you can extract the SDK headers by:"
4243       echo "ERROR:   scripts/extract-vsssdk-headers setup.exe"
4244       echo "ERROR: The headers are extracted in the directory \`inc'."
4245       feature_not_found "VSS support"
4246     fi
4247     guest_agent_with_vss="no"
4248   fi
4249 fi
4250
4251 ##########################################
4252 # lookup Windows platform SDK (if not specified)
4253 # The SDK is needed only to build .tlb (type library) file of guest agent
4254 # VSS provider from the source. It is usually unnecessary because the
4255 # pre-compiled .tlb file is included.
4256
4257 if test "$mingw32" = "yes" && test "$guest_agent" != "no" && \
4258         test "$guest_agent_with_vss" = "yes" ; then
4259   if test -z "$win_sdk"; then
4260     programfiles="$PROGRAMFILES"
4261     test -n "$PROGRAMW6432" && programfiles="$PROGRAMW6432"
4262     if test -n "$programfiles"; then
4263       win_sdk=$(ls -d "$programfiles/Microsoft SDKs/Windows/v"* | tail -1) 2>/dev/null
4264     else
4265       feature_not_found "Windows SDK"
4266     fi
4267   elif test "$win_sdk" = "no"; then
4268     win_sdk=""
4269   fi
4270 fi
4271
4272 ##########################################
4273 # check if mingw environment provides a recent ntddscsi.h
4274 if test "$mingw32" = "yes" && test "$guest_agent" != "no"; then
4275   cat > $TMPC << EOF
4276 #include <windows.h>
4277 #include <ntddscsi.h>
4278 int main(void) {
4279 #if !defined(IOCTL_SCSI_GET_ADDRESS)
4280 #error Missing required ioctl definitions
4281 #endif
4282   SCSI_ADDRESS addr = { .Lun = 0, .TargetId = 0, .PathId = 0 };
4283   return addr.Lun;
4284 }
4285 EOF
4286   if compile_prog "" "" ; then
4287     guest_agent_ntddscsi=yes
4288     libs_qga="-lsetupapi -lcfgmgr32 $libs_qga"
4289   fi
4290 fi
4291
4292 ##########################################
4293 # virgl renderer probe
4294
4295 if test "$virglrenderer" != "no" ; then
4296   cat > $TMPC << EOF
4297 #include <virglrenderer.h>
4298 int main(void) { virgl_renderer_poll(); return 0; }
4299 EOF
4300   virgl_cflags=$($pkg_config --cflags virglrenderer 2>/dev/null)
4301   virgl_libs=$($pkg_config --libs virglrenderer 2>/dev/null)
4302   virgl_version=$($pkg_config --modversion virglrenderer 2>/dev/null)
4303   if $pkg_config virglrenderer >/dev/null 2>&1 && \
4304      compile_prog "$virgl_cflags" "$virgl_libs" ; then
4305     virglrenderer="yes"
4306   else
4307     if test "$virglrenderer" = "yes" ; then
4308       feature_not_found "virglrenderer"
4309     fi
4310     virglrenderer="no"
4311   fi
4312 fi
4313
4314 ##########################################
4315 # capstone
4316
4317 case "$capstone" in
4318   auto | enabled | internal)
4319     # Simpler to always update submodule, even if not needed.
4320     if test "$git_submodules_action" != "ignore"; then
4321       git_submodules="${git_submodules} capstone"
4322     fi
4323     ;;
4324 esac
4325
4326 ##########################################
4327 # check if we have fdatasync
4328
4329 fdatasync=no
4330 cat > $TMPC << EOF
4331 #include <unistd.h>
4332 int main(void) {
4333 #if defined(_POSIX_SYNCHRONIZED_IO) && _POSIX_SYNCHRONIZED_IO > 0
4334 return fdatasync(0);
4335 #else
4336 #error Not supported
4337 #endif
4338 }
4339 EOF
4340 if compile_prog "" "" ; then
4341     fdatasync=yes
4342 fi
4343
4344 ##########################################
4345 # check if we have madvise
4346
4347 madvise=no
4348 cat > $TMPC << EOF
4349 #include <sys/types.h>
4350 #include <sys/mman.h>
4351 #include <stddef.h>
4352 int main(void) { return madvise(NULL, 0, MADV_DONTNEED); }
4353 EOF
4354 if compile_prog "" "" ; then
4355     madvise=yes
4356 fi
4357
4358 ##########################################
4359 # check if we have posix_madvise
4360
4361 posix_madvise=no
4362 cat > $TMPC << EOF
4363 #include <sys/mman.h>
4364 #include <stddef.h>
4365 int main(void) { return posix_madvise(NULL, 0, POSIX_MADV_DONTNEED); }
4366 EOF
4367 if compile_prog "" "" ; then
4368     posix_madvise=yes
4369 fi
4370
4371 ##########################################
4372 # check if we have posix_memalign()
4373
4374 posix_memalign=no
4375 cat > $TMPC << EOF
4376 #include <stdlib.h>
4377 int main(void) {
4378     void *p;
4379     return posix_memalign(&p, 8, 8);
4380 }
4381 EOF
4382 if compile_prog "" "" ; then
4383     posix_memalign=yes
4384 fi
4385
4386 ##########################################
4387 # check if we have posix_syslog
4388
4389 posix_syslog=no
4390 cat > $TMPC << EOF
4391 #include <syslog.h>
4392 int main(void) { openlog("qemu", LOG_PID, LOG_DAEMON); syslog(LOG_INFO, "configure"); return 0; }
4393 EOF
4394 if compile_prog "" "" ; then
4395     posix_syslog=yes
4396 fi
4397
4398 ##########################################
4399 # check if we have sem_timedwait
4400
4401 sem_timedwait=no
4402 cat > $TMPC << EOF
4403 #include <semaphore.h>
4404 int main(void) { sem_t s; struct timespec t = {0}; return sem_timedwait(&s, &t); }
4405 EOF
4406 if compile_prog "" "" ; then
4407     sem_timedwait=yes
4408 fi
4409
4410 ##########################################
4411 # check if we have strchrnul
4412
4413 strchrnul=no
4414 cat > $TMPC << EOF
4415 #include <string.h>
4416 int main(void);
4417 // Use a haystack that the compiler shouldn't be able to constant fold
4418 char *haystack = (char*)&main;
4419 int main(void) { return strchrnul(haystack, 'x') != &haystack[6]; }
4420 EOF
4421 if compile_prog "" "" ; then
4422     strchrnul=yes
4423 fi
4424
4425 #########################################
4426 # check if we have st_atim
4427
4428 st_atim=no
4429 cat > $TMPC << EOF
4430 #include <sys/stat.h>
4431 #include <stddef.h>
4432 int main(void) { return offsetof(struct stat, st_atim); }
4433 EOF
4434 if compile_prog "" "" ; then
4435     st_atim=yes
4436 fi
4437
4438 ##########################################
4439 # check if trace backend exists
4440
4441 $python "$source_path/scripts/tracetool.py" "--backends=$trace_backends" --check-backends  > /dev/null 2> /dev/null
4442 if test "$?" -ne 0 ; then
4443   error_exit "invalid trace backends" \
4444       "Please choose supported trace backends."
4445 fi
4446
4447 ##########################################
4448 # For 'ust' backend, test if ust headers are present
4449 if have_backend "ust"; then
4450   cat > $TMPC << EOF
4451 #include <lttng/tracepoint.h>
4452 int main(void) { return 0; }
4453 EOF
4454   if compile_prog "" "-Wl,--no-as-needed -ldl" ; then
4455     if $pkg_config lttng-ust --exists; then
4456       lttng_ust_libs=$($pkg_config --libs lttng-ust)
4457     else
4458       lttng_ust_libs="-llttng-ust -ldl"
4459     fi
4460     if $pkg_config liburcu-bp --exists; then
4461       urcu_bp_libs=$($pkg_config --libs liburcu-bp)
4462     else
4463       urcu_bp_libs="-lurcu-bp"
4464     fi
4465   else
4466     error_exit "Trace backend 'ust' missing lttng-ust header files"
4467   fi
4468 fi
4469
4470 ##########################################
4471 # For 'dtrace' backend, test if 'dtrace' command is present
4472 if have_backend "dtrace"; then
4473   if ! has 'dtrace' ; then
4474     error_exit "dtrace command is not found in PATH $PATH"
4475   fi
4476   trace_backend_stap="no"
4477   if has 'stap' ; then
4478     trace_backend_stap="yes"
4479
4480     # Workaround to avoid dtrace(1) producing a file with 'hidden' symbol
4481     # visibility. Define STAP_SDT_V2 to produce 'default' symbol visibility
4482     # instead. QEMU --enable-modules depends on this because the SystemTap
4483     # semaphores are linked into the main binary and not the module's shared
4484     # object.
4485     QEMU_CFLAGS="$QEMU_CFLAGS -DSTAP_SDT_V2"
4486   fi
4487 fi
4488
4489 ##########################################
4490 # check and set a backend for coroutine
4491
4492 # We prefer ucontext, but it's not always possible. The fallback
4493 # is sigcontext. On Windows the only valid backend is the Windows
4494 # specific one.
4495
4496 ucontext_works=no
4497 if test "$darwin" != "yes"; then
4498   cat > $TMPC << EOF
4499 #include <ucontext.h>
4500 #ifdef __stub_makecontext
4501 #error Ignoring glibc stub makecontext which will always fail
4502 #endif
4503 int main(void) { makecontext(0, 0, 0); return 0; }
4504 EOF
4505   if compile_prog "" "" ; then
4506     ucontext_works=yes
4507   fi
4508 fi
4509
4510 if test "$coroutine" = ""; then
4511   if test "$mingw32" = "yes"; then
4512     coroutine=win32
4513   elif test "$ucontext_works" = "yes"; then
4514     coroutine=ucontext
4515   else
4516     coroutine=sigaltstack
4517   fi
4518 else
4519   case $coroutine in
4520   windows)
4521     if test "$mingw32" != "yes"; then
4522       error_exit "'windows' coroutine backend only valid for Windows"
4523     fi
4524     # Unfortunately the user visible backend name doesn't match the
4525     # coroutine-*.c filename for this case, so we have to adjust it here.
4526     coroutine=win32
4527     ;;
4528   ucontext)
4529     if test "$ucontext_works" != "yes"; then
4530       feature_not_found "ucontext"
4531     fi
4532     ;;
4533   sigaltstack)
4534     if test "$mingw32" = "yes"; then
4535       error_exit "only the 'windows' coroutine backend is valid for Windows"
4536     fi
4537     ;;
4538   *)
4539     error_exit "unknown coroutine backend $coroutine"
4540     ;;
4541   esac
4542 fi
4543
4544 if test "$coroutine_pool" = ""; then
4545   coroutine_pool=yes
4546 fi
4547
4548 if test "$debug_stack_usage" = "yes"; then
4549   if test "$coroutine_pool" = "yes"; then
4550     echo "WARN: disabling coroutine pool for stack usage debugging"
4551     coroutine_pool=no
4552   fi
4553 fi
4554
4555 ##################################################
4556 # SafeStack
4557
4558
4559 if test "$safe_stack" = "yes"; then
4560 cat > $TMPC << EOF
4561 int main(int argc, char *argv[])
4562 {
4563 #if ! __has_feature(safe_stack)
4564 #error SafeStack Disabled
4565 #endif
4566     return 0;
4567 }
4568 EOF
4569   flag="-fsanitize=safe-stack"
4570   # Check that safe-stack is supported and enabled.
4571   if compile_prog "-Werror $flag" "$flag"; then
4572     # Flag needed both at compilation and at linking
4573     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
4574     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
4575   else
4576     error_exit "SafeStack not supported by your compiler"
4577   fi
4578   if test "$coroutine" != "ucontext"; then
4579     error_exit "SafeStack is only supported by the coroutine backend ucontext"
4580   fi
4581 else
4582 cat > $TMPC << EOF
4583 int main(int argc, char *argv[])
4584 {
4585 #if defined(__has_feature)
4586 #if __has_feature(safe_stack)
4587 #error SafeStack Enabled
4588 #endif
4589 #endif
4590     return 0;
4591 }
4592 EOF
4593 if test "$safe_stack" = "no"; then
4594   # Make sure that safe-stack is disabled
4595   if ! compile_prog "-Werror" ""; then
4596     # SafeStack was already enabled, try to explicitly remove the feature
4597     flag="-fno-sanitize=safe-stack"
4598     if ! compile_prog "-Werror $flag" "$flag"; then
4599       error_exit "Configure cannot disable SafeStack"
4600     fi
4601     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
4602     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
4603   fi
4604 else # "$safe_stack" = ""
4605   # Set safe_stack to yes or no based on pre-existing flags
4606   if compile_prog "-Werror" ""; then
4607     safe_stack="no"
4608   else
4609     safe_stack="yes"
4610     if test "$coroutine" != "ucontext"; then
4611       error_exit "SafeStack is only supported by the coroutine backend ucontext"
4612     fi
4613   fi
4614 fi
4615 fi
4616
4617 ##########################################
4618 # check if we have open_by_handle_at
4619
4620 open_by_handle_at=no
4621 cat > $TMPC << EOF
4622 #include <fcntl.h>
4623 #if !defined(AT_EMPTY_PATH)
4624 # error missing definition
4625 #else
4626 int main(void) { struct file_handle fh; return open_by_handle_at(0, &fh, 0); }
4627 #endif
4628 EOF
4629 if compile_prog "" "" ; then
4630     open_by_handle_at=yes
4631 fi
4632
4633 ########################################
4634 # check if we have linux/magic.h
4635
4636 linux_magic_h=no
4637 cat > $TMPC << EOF
4638 #include <linux/magic.h>
4639 int main(void) {
4640   return 0;
4641 }
4642 EOF
4643 if compile_prog "" "" ; then
4644     linux_magic_h=yes
4645 fi
4646
4647 ########################################
4648 # check if we have valgrind/valgrind.h
4649
4650 valgrind_h=no
4651 cat > $TMPC << EOF
4652 #include <valgrind/valgrind.h>
4653 int main(void) {
4654   return 0;
4655 }
4656 EOF
4657 if compile_prog "" "" ; then
4658     valgrind_h=yes
4659 fi
4660
4661 ########################################
4662 # check if environ is declared
4663
4664 has_environ=no
4665 cat > $TMPC << EOF
4666 #include <unistd.h>
4667 int main(void) {
4668     environ = 0;
4669     return 0;
4670 }
4671 EOF
4672 if compile_prog "" "" ; then
4673     has_environ=yes
4674 fi
4675
4676 ########################################
4677 # check if cpuid.h is usable.
4678
4679 cat > $TMPC << EOF
4680 #include <cpuid.h>
4681 int main(void) {
4682     unsigned a, b, c, d;
4683     int max = __get_cpuid_max(0, 0);
4684
4685     if (max >= 1) {
4686         __cpuid(1, a, b, c, d);
4687     }
4688
4689     if (max >= 7) {
4690         __cpuid_count(7, 0, a, b, c, d);
4691     }
4692
4693     return 0;
4694 }
4695 EOF
4696 if compile_prog "" "" ; then
4697     cpuid_h=yes
4698 fi
4699
4700 ##########################################
4701 # avx2 optimization requirement check
4702 #
4703 # There is no point enabling this if cpuid.h is not usable,
4704 # since we won't be able to select the new routines.
4705
4706 if test "$cpuid_h" = "yes" && test "$avx2_opt" != "no"; then
4707   cat > $TMPC << EOF
4708 #pragma GCC push_options
4709 #pragma GCC target("avx2")
4710 #include <cpuid.h>
4711 #include <immintrin.h>
4712 static int bar(void *a) {
4713     __m256i x = *(__m256i *)a;
4714     return _mm256_testz_si256(x, x);
4715 }
4716 int main(int argc, char *argv[]) { return bar(argv[0]); }
4717 EOF
4718   if compile_object "" ; then
4719     avx2_opt="yes"
4720   else
4721     avx2_opt="no"
4722   fi
4723 fi
4724
4725 ##########################################
4726 # avx512f optimization requirement check
4727 #
4728 # There is no point enabling this if cpuid.h is not usable,
4729 # since we won't be able to select the new routines.
4730 # by default, it is turned off.
4731 # if user explicitly want to enable it, check environment
4732
4733 if test "$cpuid_h" = "yes" && test "$avx512f_opt" = "yes"; then
4734   cat > $TMPC << EOF
4735 #pragma GCC push_options
4736 #pragma GCC target("avx512f")
4737 #include <cpuid.h>
4738 #include <immintrin.h>
4739 static int bar(void *a) {
4740     __m512i x = *(__m512i *)a;
4741     return _mm512_test_epi64_mask(x, x);
4742 }
4743 int main(int argc, char *argv[])
4744 {
4745         return bar(argv[0]);
4746 }
4747 EOF
4748   if ! compile_object "" ; then
4749     avx512f_opt="no"
4750   fi
4751 else
4752   avx512f_opt="no"
4753 fi
4754
4755 ########################################
4756 # check if __[u]int128_t is usable.
4757
4758 int128=no
4759 cat > $TMPC << EOF
4760 __int128_t a;
4761 __uint128_t b;
4762 int main (void) {
4763   a = a + b;
4764   b = a * b;
4765   a = a * a;
4766   return 0;
4767 }
4768 EOF
4769 if compile_prog "" "" ; then
4770     int128=yes
4771 fi
4772
4773 #########################################
4774 # See if 128-bit atomic operations are supported.
4775
4776 atomic128=no
4777 if test "$int128" = "yes"; then
4778   cat > $TMPC << EOF
4779 int main(void)
4780 {
4781   unsigned __int128 x = 0, y = 0;
4782   y = __atomic_load_16(&x, 0);
4783   __atomic_store_16(&x, y, 0);
4784   __atomic_compare_exchange_16(&x, &y, x, 0, 0, 0);
4785   return 0;
4786 }
4787 EOF
4788   if compile_prog "" "" ; then
4789     atomic128=yes
4790   fi
4791 fi
4792
4793 cmpxchg128=no
4794 if test "$int128" = yes && test "$atomic128" = no; then
4795   cat > $TMPC << EOF
4796 int main(void)
4797 {
4798   unsigned __int128 x = 0, y = 0;
4799   __sync_val_compare_and_swap_16(&x, y, x);
4800   return 0;
4801 }
4802 EOF
4803   if compile_prog "" "" ; then
4804     cmpxchg128=yes
4805   fi
4806 fi
4807
4808 #########################################
4809 # See if 64-bit atomic operations are supported.
4810 # Note that without __atomic builtins, we can only
4811 # assume atomic loads/stores max at pointer size.
4812
4813 cat > $TMPC << EOF
4814 #include <stdint.h>
4815 int main(void)
4816 {
4817   uint64_t x = 0, y = 0;
4818 #ifdef __ATOMIC_RELAXED
4819   y = __atomic_load_n(&x, __ATOMIC_RELAXED);
4820   __atomic_store_n(&x, y, __ATOMIC_RELAXED);
4821   __atomic_compare_exchange_n(&x, &y, x, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
4822   __atomic_exchange_n(&x, y, __ATOMIC_RELAXED);
4823   __atomic_fetch_add(&x, y, __ATOMIC_RELAXED);
4824 #else
4825   typedef char is_host64[sizeof(void *) >= sizeof(uint64_t) ? 1 : -1];
4826   __sync_lock_test_and_set(&x, y);
4827   __sync_val_compare_and_swap(&x, y, 0);
4828   __sync_fetch_and_add(&x, y);
4829 #endif
4830   return 0;
4831 }
4832 EOF
4833 if compile_prog "" "" ; then
4834   atomic64=yes
4835 fi
4836
4837 #########################################
4838 # See if --dynamic-list is supported by the linker
4839 ld_dynamic_list="no"
4840 if test "$static" = "no" ; then
4841     cat > $TMPTXT <<EOF
4842 {
4843   foo;
4844 };
4845 EOF
4846
4847     cat > $TMPC <<EOF
4848 #include <stdio.h>
4849 void foo(void);
4850
4851 void foo(void)
4852 {
4853   printf("foo\n");
4854 }
4855
4856 int main(void)
4857 {
4858   foo();
4859   return 0;
4860 }
4861 EOF
4862
4863     if compile_prog "" "-Wl,--dynamic-list=$TMPTXT" ; then
4864         ld_dynamic_list="yes"
4865     fi
4866 fi
4867
4868 #########################################
4869 # See if -exported_symbols_list is supported by the linker
4870
4871 ld_exported_symbols_list="no"
4872 if test "$static" = "no" ; then
4873     cat > $TMPTXT <<EOF
4874   _foo
4875 EOF
4876
4877     if compile_prog "" "-Wl,-exported_symbols_list,$TMPTXT" ; then
4878         ld_exported_symbols_list="yes"
4879     fi
4880 fi
4881
4882 if  test "$plugins" = "yes" &&
4883     test "$ld_dynamic_list" = "no" &&
4884     test "$ld_exported_symbols_list" = "no" ; then
4885   error_exit \
4886       "Plugin support requires dynamic linking and specifying a set of symbols " \
4887       "that are exported to plugins. Unfortunately your linker doesn't " \
4888       "support the flag (--dynamic-list or -exported_symbols_list) used " \
4889       "for this purpose. You can't build with --static."
4890 fi
4891
4892 ########################################
4893 # See if __attribute__((alias)) is supported.
4894 # This false for Xcode 9, but has been remedied for Xcode 10.
4895 # Unfortunately, travis uses Xcode 9 by default.
4896
4897 attralias=no
4898 cat > $TMPC << EOF
4899 int x = 1;
4900 extern const int y __attribute__((alias("x")));
4901 int main(void) { return 0; }
4902 EOF
4903 if compile_prog "" "" ; then
4904     attralias=yes
4905 fi
4906
4907 ########################################
4908 # check if getauxval is available.
4909
4910 getauxval=no
4911 cat > $TMPC << EOF
4912 #include <sys/auxv.h>
4913 int main(void) {
4914   return getauxval(AT_HWCAP) == 0;
4915 }
4916 EOF
4917 if compile_prog "" "" ; then
4918     getauxval=yes
4919 fi
4920
4921 ########################################
4922 # check if ccache is interfering with
4923 # semantic analysis of macros
4924
4925 unset CCACHE_CPP2
4926 ccache_cpp2=no
4927 cat > $TMPC << EOF
4928 static const int Z = 1;
4929 #define fn() ({ Z; })
4930 #define TAUT(X) ((X) == Z)
4931 #define PAREN(X, Y) (X == Y)
4932 #define ID(X) (X)
4933 int main(int argc, char *argv[])
4934 {
4935     int x = 0, y = 0;
4936     x = ID(x);
4937     x = fn();
4938     fn();
4939     if (PAREN(x, y)) return 0;
4940     if (TAUT(Z)) return 0;
4941     return 0;
4942 }
4943 EOF
4944
4945 if ! compile_object "-Werror"; then
4946     ccache_cpp2=yes
4947 fi
4948
4949 #################################################
4950 # clang does not support glibc + FORTIFY_SOURCE.
4951
4952 if test "$fortify_source" != "no"; then
4953   if echo | $cc -dM -E - | grep __clang__ > /dev/null 2>&1 ; then
4954     fortify_source="no";
4955   elif test -n "$cxx" && has $cxx &&
4956        echo | $cxx -dM -E - | grep __clang__ >/dev/null 2>&1 ; then
4957     fortify_source="no";
4958   else
4959     fortify_source="yes"
4960   fi
4961 fi
4962
4963 ###############################################
4964 # Check if copy_file_range is provided by glibc
4965 have_copy_file_range=no
4966 cat > $TMPC << EOF
4967 #include <unistd.h>
4968 int main(void) {
4969   copy_file_range(0, NULL, 0, NULL, 0, 0);
4970   return 0;
4971 }
4972 EOF
4973 if compile_prog "" "" ; then
4974     have_copy_file_range=yes
4975 fi
4976
4977 ##########################################
4978 # check if struct fsxattr is available via linux/fs.h
4979
4980 have_fsxattr=no
4981 cat > $TMPC << EOF
4982 #include <linux/fs.h>
4983 struct fsxattr foo;
4984 int main(void) {
4985   return 0;
4986 }
4987 EOF
4988 if compile_prog "" "" ; then
4989     have_fsxattr=yes
4990 fi
4991
4992 ##########################################
4993 # check for usable membarrier system call
4994 if test "$membarrier" = "yes"; then
4995     have_membarrier=no
4996     if test "$mingw32" = "yes" ; then
4997         have_membarrier=yes
4998     elif test "$linux" = "yes" ; then
4999         cat > $TMPC << EOF
5000     #include <linux/membarrier.h>
5001     #include <sys/syscall.h>
5002     #include <unistd.h>
5003     #include <stdlib.h>
5004     int main(void) {
5005         syscall(__NR_membarrier, MEMBARRIER_CMD_QUERY, 0);
5006         syscall(__NR_membarrier, MEMBARRIER_CMD_SHARED, 0);
5007         exit(0);
5008     }
5009 EOF
5010         if compile_prog "" "" ; then
5011             have_membarrier=yes
5012         fi
5013     fi
5014     if test "$have_membarrier" = "no"; then
5015       feature_not_found "membarrier" "membarrier system call not available"
5016     fi
5017 else
5018     # Do not enable it by default even for Mingw32, because it doesn't
5019     # work on Wine.
5020     membarrier=no
5021 fi
5022
5023 ##########################################
5024 # check if rtnetlink.h exists and is useful
5025 have_rtnetlink=no
5026 cat > $TMPC << EOF
5027 #include <linux/rtnetlink.h>
5028 int main(void) {
5029   return IFLA_PROTO_DOWN;
5030 }
5031 EOF
5032 if compile_prog "" "" ; then
5033     have_rtnetlink=yes
5034 fi
5035
5036 ##########################################
5037 # check for usable AF_VSOCK environment
5038 have_af_vsock=no
5039 cat > $TMPC << EOF
5040 #include <errno.h>
5041 #include <sys/types.h>
5042 #include <sys/socket.h>
5043 #if !defined(AF_VSOCK)
5044 # error missing AF_VSOCK flag
5045 #endif
5046 #include <linux/vm_sockets.h>
5047 int main(void) {
5048     int sock, ret;
5049     struct sockaddr_vm svm;
5050     socklen_t len = sizeof(svm);
5051     sock = socket(AF_VSOCK, SOCK_STREAM, 0);
5052     ret = getpeername(sock, (struct sockaddr *)&svm, &len);
5053     if ((ret == -1) && (errno == ENOTCONN)) {
5054         return 0;
5055     }
5056     return -1;
5057 }
5058 EOF
5059 if compile_prog "" "" ; then
5060     have_af_vsock=yes
5061 fi
5062
5063 ##########################################
5064 # check for usable AF_ALG environment
5065 have_afalg=no
5066 cat > $TMPC << EOF
5067 #include <errno.h>
5068 #include <sys/types.h>
5069 #include <sys/socket.h>
5070 #include <linux/if_alg.h>
5071 int main(void) {
5072     int sock;
5073     sock = socket(AF_ALG, SOCK_SEQPACKET, 0);
5074     return sock;
5075 }
5076 EOF
5077 if compile_prog "" "" ; then
5078     have_afalg=yes
5079 fi
5080 if test "$crypto_afalg" = "yes"
5081 then
5082     if test "$have_afalg" != "yes"
5083     then
5084         error_exit "AF_ALG requested but could not be detected"
5085     fi
5086 fi
5087
5088
5089 #################################################
5090 # check for sysmacros.h
5091
5092 have_sysmacros=no
5093 cat > $TMPC << EOF
5094 #include <sys/sysmacros.h>
5095 int main(void) {
5096     return makedev(0, 0);
5097 }
5098 EOF
5099 if compile_prog "" "" ; then
5100     have_sysmacros=yes
5101 fi
5102
5103 ##########################################
5104 # check for _Static_assert()
5105
5106 have_static_assert=no
5107 cat > $TMPC << EOF
5108 _Static_assert(1, "success");
5109 int main(void) {
5110     return 0;
5111 }
5112 EOF
5113 if compile_prog "" "" ; then
5114     have_static_assert=yes
5115 fi
5116
5117 ##########################################
5118 # check for utmpx.h, it is missing e.g. on OpenBSD
5119
5120 have_utmpx=no
5121 cat > $TMPC << EOF
5122 #include <utmpx.h>
5123 struct utmpx user_info;
5124 int main(void) {
5125     return 0;
5126 }
5127 EOF
5128 if compile_prog "" "" ; then
5129     have_utmpx=yes
5130 fi
5131
5132 ##########################################
5133 # check for getrandom()
5134
5135 have_getrandom=no
5136 cat > $TMPC << EOF
5137 #include <sys/random.h>
5138 int main(void) {
5139     return getrandom(0, 0, GRND_NONBLOCK);
5140 }
5141 EOF
5142 if compile_prog "" "" ; then
5143     have_getrandom=yes
5144 fi
5145
5146 ##########################################
5147 # checks for sanitizers
5148
5149 have_asan=no
5150 have_ubsan=no
5151 have_asan_iface_h=no
5152 have_asan_iface_fiber=no
5153
5154 if test "$sanitizers" = "yes" ; then
5155   write_c_skeleton
5156   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" ""; then
5157       have_asan=yes
5158   fi
5159
5160   # we could use a simple skeleton for flags checks, but this also
5161   # detect the static linking issue of ubsan, see also:
5162   # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84285
5163   cat > $TMPC << EOF
5164 #include <stdlib.h>
5165 int main(void) {
5166     void *tmp = malloc(10);
5167     if (tmp != NULL) {
5168         return *(int *)(tmp + 2);
5169     }
5170     return 1;
5171 }
5172 EOF
5173   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=undefined" ""; then
5174       have_ubsan=yes
5175   fi
5176
5177   if check_include "sanitizer/asan_interface.h" ; then
5178       have_asan_iface_h=yes
5179   fi
5180
5181   cat > $TMPC << EOF
5182 #include <sanitizer/asan_interface.h>
5183 int main(void) {
5184   __sanitizer_start_switch_fiber(0, 0, 0);
5185   return 0;
5186 }
5187 EOF
5188   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" "" ; then
5189       have_asan_iface_fiber=yes
5190   fi
5191 fi
5192
5193 ##########################################
5194 # checks for fuzzer
5195 if test "$fuzzing" = "yes" && test -z "${LIB_FUZZING_ENGINE+xxx}"; then
5196   write_c_fuzzer_skeleton
5197   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=fuzzer" ""; then
5198     have_fuzzer=yes
5199   else
5200     error_exit "Your compiler doesn't support -fsanitize=fuzzer"
5201     exit 1
5202   fi
5203 fi
5204
5205 # Thread sanitizer is, for now, much noisier than the other sanitizers;
5206 # keep it separate until that is not the case.
5207 if test "$tsan" = "yes" && test "$sanitizers" = "yes"; then
5208   error_exit "TSAN is not supported with other sanitiziers."
5209 fi
5210 have_tsan=no
5211 have_tsan_iface_fiber=no
5212 if test "$tsan" = "yes" ; then
5213   write_c_skeleton
5214   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
5215       have_tsan=yes
5216   fi
5217   cat > $TMPC << EOF
5218 #include <sanitizer/tsan_interface.h>
5219 int main(void) {
5220   __tsan_create_fiber(0);
5221   return 0;
5222 }
5223 EOF
5224   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
5225       have_tsan_iface_fiber=yes
5226   fi
5227 fi
5228
5229 ##########################################
5230 # check for libpmem
5231
5232 if test "$libpmem" != "no"; then
5233         if $pkg_config --exists "libpmem"; then
5234                 libpmem="yes"
5235                 libpmem_libs=$($pkg_config --libs libpmem)
5236                 libpmem_cflags=$($pkg_config --cflags libpmem)
5237         else
5238                 if test "$libpmem" = "yes" ; then
5239                         feature_not_found "libpmem" "Install nvml or pmdk"
5240                 fi
5241                 libpmem="no"
5242         fi
5243 fi
5244
5245 ##########################################
5246 # check for libdaxctl
5247
5248 if test "$libdaxctl" != "no"; then
5249         if $pkg_config --atleast-version=57 "libdaxctl"; then
5250                 libdaxctl="yes"
5251                 libdaxctl_libs=$($pkg_config --libs libdaxctl)
5252                 libdaxctl_cflags=$($pkg_config --cflags libdaxctl)
5253         else
5254                 if test "$libdaxctl" = "yes" ; then
5255                         feature_not_found "libdaxctl" "Install libdaxctl"
5256                 fi
5257                 libdaxctl="no"
5258         fi
5259 fi
5260
5261 ##########################################
5262 # check for slirp
5263
5264 case "$slirp" in
5265   auto | enabled | internal)
5266     # Simpler to always update submodule, even if not needed.
5267     if test "$git_submodules_action" != "ignore"; then
5268       git_submodules="${git_submodules} slirp"
5269     fi
5270     ;;
5271 esac
5272
5273 ##########################################
5274 # check for usable __NR_keyctl syscall
5275
5276 if test "$linux" = "yes" ; then
5277
5278     have_keyring=no
5279     cat > $TMPC << EOF
5280 #include <errno.h>
5281 #include <asm/unistd.h>
5282 #include <linux/keyctl.h>
5283 #include <unistd.h>
5284 int main(void) {
5285     return syscall(__NR_keyctl, KEYCTL_READ, 0, NULL, NULL, 0);
5286 }
5287 EOF
5288     if compile_prog "" "" ; then
5289         have_keyring=yes
5290     fi
5291 fi
5292 if test "$secret_keyring" != "no"
5293 then
5294     if test "$have_keyring" = "yes"
5295     then
5296         secret_keyring=yes
5297     else
5298         if test "$secret_keyring" = "yes"
5299         then
5300             error_exit "syscall __NR_keyctl requested, \
5301 but not implemented on your system"
5302         else
5303             secret_keyring=no
5304         fi
5305     fi
5306 fi
5307
5308 ##########################################
5309 # End of CC checks
5310 # After here, no more $cc or $ld runs
5311
5312 write_c_skeleton
5313
5314 if test "$gcov" = "yes" ; then
5315   :
5316 elif test "$fortify_source" = "yes" ; then
5317   QEMU_CFLAGS="-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $QEMU_CFLAGS"
5318   debug=no
5319 fi
5320
5321 case "$ARCH" in
5322 alpha)
5323   # Ensure there's only a single GP
5324   QEMU_CFLAGS="-msmall-data $QEMU_CFLAGS"
5325 ;;
5326 esac
5327
5328 if test "$gprof" = "yes" ; then
5329   QEMU_CFLAGS="-p $QEMU_CFLAGS"
5330   QEMU_LDFLAGS="-p $QEMU_LDFLAGS"
5331 fi
5332
5333 if test "$have_asan" = "yes"; then
5334   QEMU_CFLAGS="-fsanitize=address $QEMU_CFLAGS"
5335   QEMU_LDFLAGS="-fsanitize=address $QEMU_LDFLAGS"
5336   if test "$have_asan_iface_h" = "no" ; then
5337       echo "ASAN build enabled, but ASAN header missing." \
5338            "Without code annotation, the report may be inferior."
5339   elif test "$have_asan_iface_fiber" = "no" ; then
5340       echo "ASAN build enabled, but ASAN header is too old." \
5341            "Without code annotation, the report may be inferior."
5342   fi
5343 fi
5344 if test "$have_tsan" = "yes" ; then
5345   if test "$have_tsan_iface_fiber" = "yes" ; then
5346     QEMU_CFLAGS="-fsanitize=thread $QEMU_CFLAGS"
5347     QEMU_LDFLAGS="-fsanitize=thread $QEMU_LDFLAGS"
5348   else
5349     error_exit "Cannot enable TSAN due to missing fiber annotation interface."
5350   fi
5351 elif test "$tsan" = "yes" ; then
5352   error_exit "Cannot enable TSAN due to missing sanitize thread interface."
5353 fi
5354 if test "$have_ubsan" = "yes"; then
5355   QEMU_CFLAGS="-fsanitize=undefined $QEMU_CFLAGS"
5356   QEMU_LDFLAGS="-fsanitize=undefined $QEMU_LDFLAGS"
5357 fi
5358
5359 ##########################################
5360
5361 # Exclude --warn-common with TSan to suppress warnings from the TSan libraries.
5362 if test "$solaris" = "no" && test "$tsan" = "no"; then
5363     if $ld --version 2>/dev/null | grep "GNU ld" >/dev/null 2>/dev/null ; then
5364         QEMU_LDFLAGS="-Wl,--warn-common $QEMU_LDFLAGS"
5365     fi
5366 fi
5367
5368 # Use ASLR, no-SEH and DEP if available
5369 if test "$mingw32" = "yes" ; then
5370     flags="--no-seh --nxcompat"
5371
5372     # Disable ASLR for debug builds to allow debugging with gdb
5373     if test "$debug" = "no" ; then
5374         flags="--dynamicbase $flags"
5375     fi
5376
5377     for flag in $flags; do
5378         if ld_has $flag ; then
5379             QEMU_LDFLAGS="-Wl,$flag $QEMU_LDFLAGS"
5380         fi
5381     done
5382 fi
5383
5384 # We can only support ivshmem if we have eventfd
5385 if [ "$eventfd" = "yes" ]; then
5386   ivshmem=yes
5387 fi
5388
5389 # Probe for guest agent support/options
5390
5391 if [ "$guest_agent" != "no" ]; then
5392   if [ "$softmmu" = no -a "$want_tools" = no ] ; then
5393       guest_agent=no
5394   elif [ "$linux" = "yes" -o "$bsd" = "yes" -o "$solaris" = "yes" -o "$mingw32" = "yes" ] ; then
5395       guest_agent=yes
5396   elif [ "$guest_agent" != yes ]; then
5397       guest_agent=no
5398   else
5399       error_exit "Guest agent is not supported on this platform"
5400   fi
5401 fi
5402
5403 # Guest agent Windows MSI package
5404
5405 if test "$QEMU_GA_MANUFACTURER" = ""; then
5406   QEMU_GA_MANUFACTURER=QEMU
5407 fi
5408 if test "$QEMU_GA_DISTRO" = ""; then
5409   QEMU_GA_DISTRO=Linux
5410 fi
5411 if test "$QEMU_GA_VERSION" = ""; then
5412     QEMU_GA_VERSION=$(cat $source_path/VERSION)
5413 fi
5414
5415 QEMU_GA_MSI_MINGW_DLL_PATH="$($pkg_config --variable=prefix glib-2.0)/bin"
5416
5417 # Mac OS X ships with a broken assembler
5418 roms=
5419 if { test "$cpu" = "i386" || test "$cpu" = "x86_64"; } && \
5420         test "$targetos" != "Darwin" && test "$targetos" != "SunOS" && \
5421         test "$targetos" != "Haiku" && test "$softmmu" = yes ; then
5422     # Different host OS linkers have different ideas about the name of the ELF
5423     # emulation. Linux and OpenBSD/amd64 use 'elf_i386'; FreeBSD uses the _fbsd
5424     # variant; OpenBSD/i386 uses the _obsd variant; and Windows uses i386pe.
5425     for emu in elf_i386 elf_i386_fbsd elf_i386_obsd i386pe; do
5426         if "$ld" -verbose 2>&1 | grep -q "^[[:space:]]*$emu[[:space:]]*$"; then
5427             ld_i386_emulation="$emu"
5428             roms="optionrom"
5429             break
5430         fi
5431     done
5432 fi
5433
5434 # Only build s390-ccw bios if we're on s390x and the compiler has -march=z900
5435 if test "$cpu" = "s390x" ; then
5436   write_c_skeleton
5437   if compile_prog "-march=z900" ""; then
5438     roms="$roms s390-ccw"
5439     # SLOF is required for building the s390-ccw firmware on s390x,
5440     # since it is using the libnet code from SLOF for network booting.
5441     if test "$git_submodules_action" != "ignore"; then
5442       git_submodules="${git_submodules} roms/SLOF"
5443     fi
5444   fi
5445 fi
5446
5447 # Check that the C++ compiler exists and works with the C compiler.
5448 # All the QEMU_CXXFLAGS are based on QEMU_CFLAGS. Keep this at the end to don't miss any other that could be added.
5449 if has $cxx; then
5450     cat > $TMPC <<EOF
5451 int c_function(void);
5452 int main(void) { return c_function(); }
5453 EOF
5454
5455     compile_object
5456
5457     cat > $TMPCXX <<EOF
5458 extern "C" {
5459    int c_function(void);
5460 }
5461 int c_function(void) { return 42; }
5462 EOF
5463
5464     update_cxxflags
5465
5466     if do_cxx $CXXFLAGS $CONFIGURE_CXXFLAGS $QEMU_CXXFLAGS -o $TMPE $TMPCXX $TMPO $QEMU_LDFLAGS; then
5467         # C++ compiler $cxx works ok with C compiler $cc
5468         :
5469     else
5470         echo "C++ compiler $cxx does not work with C compiler $cc"
5471         echo "Disabling C++ specific optional code"
5472         cxx=
5473     fi
5474 else
5475     echo "No C++ compiler available; disabling C++ specific optional code"
5476     cxx=
5477 fi
5478
5479 if !(GIT="$git" "$source_path/scripts/git-submodule.sh" "$git_submodules_action" "$git_submodules"); then
5480     exit 1
5481 fi
5482
5483 config_host_mak="config-host.mak"
5484
5485 echo "# Automatically generated by configure - do not modify" > $config_host_mak
5486 echo >> $config_host_mak
5487
5488 echo all: >> $config_host_mak
5489 echo "GIT=$git" >> $config_host_mak
5490 echo "GIT_SUBMODULES=$git_submodules" >> $config_host_mak
5491 echo "GIT_SUBMODULES_ACTION=$git_submodules_action" >> $config_host_mak
5492
5493 echo "ARCH=$ARCH" >> $config_host_mak
5494
5495 if test "$debug_tcg" = "yes" ; then
5496   echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
5497 fi
5498 if test "$strip_opt" = "yes" ; then
5499   echo "STRIP=${strip}" >> $config_host_mak
5500 fi
5501 if test "$bigendian" = "yes" ; then
5502   echo "HOST_WORDS_BIGENDIAN=y" >> $config_host_mak
5503 fi
5504 if test "$mingw32" = "yes" ; then
5505   echo "CONFIG_WIN32=y" >> $config_host_mak
5506   if test "$guest_agent_with_vss" = "yes" ; then
5507     echo "CONFIG_QGA_VSS=y" >> $config_host_mak
5508     echo "QGA_VSS_PROVIDER=$qga_vss_provider" >> $config_host_mak
5509     echo "WIN_SDK=\"$win_sdk\"" >> $config_host_mak
5510   fi
5511   if test "$guest_agent_ntddscsi" = "yes" ; then
5512     echo "CONFIG_QGA_NTDDSCSI=y" >> $config_host_mak
5513   fi
5514   echo "QEMU_GA_MSI_MINGW_DLL_PATH=${QEMU_GA_MSI_MINGW_DLL_PATH}" >> $config_host_mak
5515   echo "QEMU_GA_MANUFACTURER=${QEMU_GA_MANUFACTURER}" >> $config_host_mak
5516   echo "QEMU_GA_DISTRO=${QEMU_GA_DISTRO}" >> $config_host_mak
5517   echo "QEMU_GA_VERSION=${QEMU_GA_VERSION}" >> $config_host_mak
5518 else
5519   echo "CONFIG_POSIX=y" >> $config_host_mak
5520 fi
5521
5522 if test "$linux" = "yes" ; then
5523   echo "CONFIG_LINUX=y" >> $config_host_mak
5524 fi
5525
5526 if test "$darwin" = "yes" ; then
5527   echo "CONFIG_DARWIN=y" >> $config_host_mak
5528 fi
5529
5530 if test "$solaris" = "yes" ; then
5531   echo "CONFIG_SOLARIS=y" >> $config_host_mak
5532 fi
5533 if test "$haiku" = "yes" ; then
5534   echo "CONFIG_HAIKU=y" >> $config_host_mak
5535 fi
5536 if test "$static" = "yes" ; then
5537   echo "CONFIG_STATIC=y" >> $config_host_mak
5538 fi
5539 if test "$profiler" = "yes" ; then
5540   echo "CONFIG_PROFILER=y" >> $config_host_mak
5541 fi
5542 if test "$want_tools" = "yes" ; then
5543   echo "CONFIG_TOOLS=y" >> $config_host_mak
5544 fi
5545 if test "$guest_agent" = "yes" ; then
5546   echo "CONFIG_GUEST_AGENT=y" >> $config_host_mak
5547 fi
5548 echo "CONFIG_SMBD_COMMAND=\"$smbd\"" >> $config_host_mak
5549 if test "$vde" = "yes" ; then
5550   echo "CONFIG_VDE=y" >> $config_host_mak
5551   echo "VDE_LIBS=$vde_libs" >> $config_host_mak
5552 fi
5553 if test "$netmap" = "yes" ; then
5554   echo "CONFIG_NETMAP=y" >> $config_host_mak
5555 fi
5556 if test "$l2tpv3" = "yes" ; then
5557   echo "CONFIG_L2TPV3=y" >> $config_host_mak
5558 fi
5559 if test "$gprof" = "yes" ; then
5560   echo "CONFIG_GPROF=y" >> $config_host_mak
5561 fi
5562 echo "CONFIG_AUDIO_DRIVERS=$audio_drv_list" >> $config_host_mak
5563 for drv in $audio_drv_list; do
5564     def=CONFIG_AUDIO_$(echo $drv | LC_ALL=C tr '[a-z]' '[A-Z]')
5565     echo "$def=y" >> $config_host_mak
5566 done
5567 if test "$alsa" = "yes" ; then
5568     echo "CONFIG_ALSA=y" >> $config_host_mak
5569 fi
5570 echo "ALSA_LIBS=$alsa_libs" >> $config_host_mak
5571 echo "ALSA_CFLAGS=$alsa_cflags" >> $config_host_mak
5572 if test "$libpulse" = "yes" ; then
5573     echo "CONFIG_LIBPULSE=y" >> $config_host_mak
5574 fi
5575 echo "PULSE_LIBS=$pulse_libs" >> $config_host_mak
5576 echo "PULSE_CFLAGS=$pulse_cflags" >> $config_host_mak
5577 echo "COREAUDIO_LIBS=$coreaudio_libs" >> $config_host_mak
5578 echo "DSOUND_LIBS=$dsound_libs" >> $config_host_mak
5579 echo "OSS_LIBS=$oss_libs" >> $config_host_mak
5580 if test "$libjack" = "yes" ; then
5581     echo "CONFIG_LIBJACK=y" >> $config_host_mak
5582 fi
5583 echo "JACK_LIBS=$jack_libs" >> $config_host_mak
5584 if test "$audio_win_int" = "yes" ; then
5585   echo "CONFIG_AUDIO_WIN_INT=y" >> $config_host_mak
5586 fi
5587 echo "CONFIG_BDRV_RW_WHITELIST=$block_drv_rw_whitelist" >> $config_host_mak
5588 echo "CONFIG_BDRV_RO_WHITELIST=$block_drv_ro_whitelist" >> $config_host_mak
5589 if test "$xfs" = "yes" ; then
5590   echo "CONFIG_XFS=y" >> $config_host_mak
5591 fi
5592 qemu_version=$(head $source_path/VERSION)
5593 echo "PKGVERSION=$pkgversion" >>$config_host_mak
5594 echo "SRC_PATH=$source_path" >> $config_host_mak
5595 echo "TARGET_DIRS=$target_list" >> $config_host_mak
5596 if test "$modules" = "yes"; then
5597   # $shacmd can generate a hash started with digit, which the compiler doesn't
5598   # like as an symbol. So prefix it with an underscore
5599   echo "CONFIG_STAMP=_$( (echo $qemu_version; echo $pkgversion; cat $0) | $shacmd - | cut -f1 -d\ )" >> $config_host_mak
5600   echo "CONFIG_MODULES=y" >> $config_host_mak
5601 fi
5602 if test "$module_upgrades" = "yes"; then
5603   echo "CONFIG_MODULE_UPGRADES=y" >> $config_host_mak
5604 fi
5605 if test "$pipe2" = "yes" ; then
5606   echo "CONFIG_PIPE2=y" >> $config_host_mak
5607 fi
5608 if test "$accept4" = "yes" ; then
5609   echo "CONFIG_ACCEPT4=y" >> $config_host_mak
5610 fi
5611 if test "$splice" = "yes" ; then
5612   echo "CONFIG_SPLICE=y" >> $config_host_mak
5613 fi
5614 if test "$eventfd" = "yes" ; then
5615   echo "CONFIG_EVENTFD=y" >> $config_host_mak
5616 fi
5617 if test "$memfd" = "yes" ; then
5618   echo "CONFIG_MEMFD=y" >> $config_host_mak
5619 fi
5620 if test "$have_usbfs" = "yes" ; then
5621   echo "CONFIG_USBFS=y" >> $config_host_mak
5622 fi
5623 if test "$fallocate" = "yes" ; then
5624   echo "CONFIG_FALLOCATE=y" >> $config_host_mak
5625 fi
5626 if test "$fallocate_punch_hole" = "yes" ; then
5627   echo "CONFIG_FALLOCATE_PUNCH_HOLE=y" >> $config_host_mak
5628 fi
5629 if test "$fallocate_zero_range" = "yes" ; then
5630   echo "CONFIG_FALLOCATE_ZERO_RANGE=y" >> $config_host_mak
5631 fi
5632 if test "$posix_fallocate" = "yes" ; then
5633   echo "CONFIG_POSIX_FALLOCATE=y" >> $config_host_mak
5634 fi
5635 if test "$sync_file_range" = "yes" ; then
5636   echo "CONFIG_SYNC_FILE_RANGE=y" >> $config_host_mak
5637 fi
5638 if test "$fiemap" = "yes" ; then
5639   echo "CONFIG_FIEMAP=y" >> $config_host_mak
5640 fi
5641 if test "$dup3" = "yes" ; then
5642   echo "CONFIG_DUP3=y" >> $config_host_mak
5643 fi
5644 if test "$ppoll" = "yes" ; then
5645   echo "CONFIG_PPOLL=y" >> $config_host_mak
5646 fi
5647 if test "$prctl_pr_set_timerslack" = "yes" ; then
5648   echo "CONFIG_PRCTL_PR_SET_TIMERSLACK=y" >> $config_host_mak
5649 fi
5650 if test "$epoll" = "yes" ; then
5651   echo "CONFIG_EPOLL=y" >> $config_host_mak
5652 fi
5653 if test "$epoll_create1" = "yes" ; then
5654   echo "CONFIG_EPOLL_CREATE1=y" >> $config_host_mak
5655 fi
5656 if test "$sendfile" = "yes" ; then
5657   echo "CONFIG_SENDFILE=y" >> $config_host_mak
5658 fi
5659 if test "$timerfd" = "yes" ; then
5660   echo "CONFIG_TIMERFD=y" >> $config_host_mak
5661 fi
5662 if test "$setns" = "yes" ; then
5663   echo "CONFIG_SETNS=y" >> $config_host_mak
5664 fi
5665 if test "$clock_adjtime" = "yes" ; then
5666   echo "CONFIG_CLOCK_ADJTIME=y" >> $config_host_mak
5667 fi
5668 if test "$syncfs" = "yes" ; then
5669   echo "CONFIG_SYNCFS=y" >> $config_host_mak
5670 fi
5671 if test "$inotify" = "yes" ; then
5672   echo "CONFIG_INOTIFY=y" >> $config_host_mak
5673 fi
5674 if test "$inotify1" = "yes" ; then
5675   echo "CONFIG_INOTIFY1=y" >> $config_host_mak
5676 fi
5677 if test "$sem_timedwait" = "yes" ; then
5678   echo "CONFIG_SEM_TIMEDWAIT=y" >> $config_host_mak
5679 fi
5680 if test "$strchrnul" = "yes" ; then
5681   echo "HAVE_STRCHRNUL=y" >> $config_host_mak
5682 fi
5683 if test "$st_atim" = "yes" ; then
5684   echo "HAVE_STRUCT_STAT_ST_ATIM=y" >> $config_host_mak
5685 fi
5686 if test "$byteswap_h" = "yes" ; then
5687   echo "CONFIG_BYTESWAP_H=y" >> $config_host_mak
5688 fi
5689 if test "$bswap_h" = "yes" ; then
5690   echo "CONFIG_MACHINE_BSWAP_H=y" >> $config_host_mak
5691 fi
5692 if test "$gio" = "yes" ; then
5693     echo "CONFIG_GIO=y" >> $config_host_mak
5694     echo "GIO_CFLAGS=$gio_cflags" >> $config_host_mak
5695     echo "GIO_LIBS=$gio_libs" >> $config_host_mak
5696     echo "GDBUS_CODEGEN=$gdbus_codegen" >> $config_host_mak
5697 fi
5698 echo "CONFIG_TLS_PRIORITY=\"$tls_priority\"" >> $config_host_mak
5699 if test "$gnutls" = "yes" ; then
5700   echo "CONFIG_GNUTLS=y" >> $config_host_mak
5701   echo "GNUTLS_CFLAGS=$gnutls_cflags" >> $config_host_mak
5702   echo "GNUTLS_LIBS=$gnutls_libs" >> $config_host_mak
5703 fi
5704 if test "$gcrypt" = "yes" ; then
5705   echo "CONFIG_GCRYPT=y" >> $config_host_mak
5706   if test "$gcrypt_hmac" = "yes" ; then
5707     echo "CONFIG_GCRYPT_HMAC=y" >> $config_host_mak
5708   fi
5709   echo "GCRYPT_CFLAGS=$gcrypt_cflags" >> $config_host_mak
5710   echo "GCRYPT_LIBS=$gcrypt_libs" >> $config_host_mak
5711 fi
5712 if test "$nettle" = "yes" ; then
5713   echo "CONFIG_NETTLE=y" >> $config_host_mak
5714   echo "CONFIG_NETTLE_VERSION_MAJOR=${nettle_version%%.*}" >> $config_host_mak
5715   echo "NETTLE_CFLAGS=$nettle_cflags" >> $config_host_mak
5716   echo "NETTLE_LIBS=$nettle_libs" >> $config_host_mak
5717 fi
5718 if test "$qemu_private_xts" = "yes" ; then
5719   echo "CONFIG_QEMU_PRIVATE_XTS=y" >> $config_host_mak
5720 fi
5721 if test "$tasn1" = "yes" ; then
5722   echo "CONFIG_TASN1=y" >> $config_host_mak
5723 fi
5724 if test "$auth_pam" = "yes" ; then
5725     echo "CONFIG_AUTH_PAM=y" >> $config_host_mak
5726 fi
5727 if test "$have_broken_size_max" = "yes" ; then
5728     echo "HAVE_BROKEN_SIZE_MAX=y" >> $config_host_mak
5729 fi
5730 if test "$have_openpty" = "yes" ; then
5731     echo "HAVE_OPENPTY=y" >> $config_host_mak
5732 fi
5733
5734 # Work around a system header bug with some kernel/XFS header
5735 # versions where they both try to define 'struct fsxattr':
5736 # xfs headers will not try to redefine structs from linux headers
5737 # if this macro is set.
5738 if test "$have_fsxattr" = "yes" ; then
5739     echo "HAVE_FSXATTR=y" >> $config_host_mak
5740 fi
5741 if test "$have_copy_file_range" = "yes" ; then
5742     echo "HAVE_COPY_FILE_RANGE=y" >> $config_host_mak
5743 fi
5744 if test "$vte" = "yes" ; then
5745   echo "CONFIG_VTE=y" >> $config_host_mak
5746   echo "VTE_CFLAGS=$vte_cflags" >> $config_host_mak
5747   echo "VTE_LIBS=$vte_libs" >> $config_host_mak
5748 fi
5749 if test "$virglrenderer" = "yes" ; then
5750   echo "CONFIG_VIRGL=y" >> $config_host_mak
5751   echo "VIRGL_CFLAGS=$virgl_cflags" >> $config_host_mak
5752   echo "VIRGL_LIBS=$virgl_libs" >> $config_host_mak
5753 fi
5754 if test "$xen" = "enabled" ; then
5755   echo "CONFIG_XEN_BACKEND=y" >> $config_host_mak
5756   echo "CONFIG_XEN_CTRL_INTERFACE_VERSION=$xen_ctrl_version" >> $config_host_mak
5757   echo "XEN_CFLAGS=$xen_cflags" >> $config_host_mak
5758   echo "XEN_LIBS=$xen_libs" >> $config_host_mak
5759 fi
5760 if test "$linux_aio" = "yes" ; then
5761   echo "CONFIG_LINUX_AIO=y" >> $config_host_mak
5762 fi
5763 if test "$linux_io_uring" = "yes" ; then
5764   echo "CONFIG_LINUX_IO_URING=y" >> $config_host_mak
5765   echo "LINUX_IO_URING_CFLAGS=$linux_io_uring_cflags" >> $config_host_mak
5766   echo "LINUX_IO_URING_LIBS=$linux_io_uring_libs" >> $config_host_mak
5767 fi
5768 if test "$vhost_scsi" = "yes" ; then
5769   echo "CONFIG_VHOST_SCSI=y" >> $config_host_mak
5770 fi
5771 if test "$vhost_net" = "yes" ; then
5772   echo "CONFIG_VHOST_NET=y" >> $config_host_mak
5773 fi
5774 if test "$vhost_net_user" = "yes" ; then
5775   echo "CONFIG_VHOST_NET_USER=y" >> $config_host_mak
5776 fi
5777 if test "$vhost_net_vdpa" = "yes" ; then
5778   echo "CONFIG_VHOST_NET_VDPA=y" >> $config_host_mak
5779 fi
5780 if test "$vhost_crypto" = "yes" ; then
5781   echo "CONFIG_VHOST_CRYPTO=y" >> $config_host_mak
5782 fi
5783 if test "$vhost_vsock" = "yes" ; then
5784   echo "CONFIG_VHOST_VSOCK=y" >> $config_host_mak
5785   if test "$vhost_user" = "yes" ; then
5786     echo "CONFIG_VHOST_USER_VSOCK=y" >> $config_host_mak
5787   fi
5788 fi
5789 if test "$vhost_kernel" = "yes" ; then
5790   echo "CONFIG_VHOST_KERNEL=y" >> $config_host_mak
5791 fi
5792 if test "$vhost_user" = "yes" ; then
5793   echo "CONFIG_VHOST_USER=y" >> $config_host_mak
5794 fi
5795 if test "$vhost_vdpa" = "yes" ; then
5796   echo "CONFIG_VHOST_VDPA=y" >> $config_host_mak
5797 fi
5798 if test "$vhost_user_fs" = "yes" ; then
5799   echo "CONFIG_VHOST_USER_FS=y" >> $config_host_mak
5800 fi
5801 if test "$iovec" = "yes" ; then
5802   echo "CONFIG_IOVEC=y" >> $config_host_mak
5803 fi
5804 if test "$membarrier" = "yes" ; then
5805   echo "CONFIG_MEMBARRIER=y" >> $config_host_mak
5806 fi
5807 if test "$signalfd" = "yes" ; then
5808   echo "CONFIG_SIGNALFD=y" >> $config_host_mak
5809 fi
5810 if test "$optreset" = "yes" ; then
5811   echo "HAVE_OPTRESET=y" >> $config_host_mak
5812 fi
5813 if test "$fdatasync" = "yes" ; then
5814   echo "CONFIG_FDATASYNC=y" >> $config_host_mak
5815 fi
5816 if test "$madvise" = "yes" ; then
5817   echo "CONFIG_MADVISE=y" >> $config_host_mak
5818 fi
5819 if test "$posix_madvise" = "yes" ; then
5820   echo "CONFIG_POSIX_MADVISE=y" >> $config_host_mak
5821 fi
5822 if test "$posix_memalign" = "yes" ; then
5823   echo "CONFIG_POSIX_MEMALIGN=y" >> $config_host_mak
5824 fi
5825 if test "$spice" = "yes" ; then
5826   echo "CONFIG_SPICE=y" >> $config_host_mak
5827   echo "SPICE_CFLAGS=$spice_cflags" >> $config_host_mak
5828   echo "SPICE_LIBS=$spice_libs" >> $config_host_mak
5829 fi
5830
5831 if test "$smartcard" = "yes" ; then
5832   echo "CONFIG_SMARTCARD=y" >> $config_host_mak
5833   echo "SMARTCARD_CFLAGS=$libcacard_cflags" >> $config_host_mak
5834   echo "SMARTCARD_LIBS=$libcacard_libs" >> $config_host_mak
5835 fi
5836
5837 if test "$libusb" = "yes" ; then
5838   echo "CONFIG_USB_LIBUSB=y" >> $config_host_mak
5839   echo "LIBUSB_CFLAGS=$libusb_cflags" >> $config_host_mak
5840   echo "LIBUSB_LIBS=$libusb_libs" >> $config_host_mak
5841 fi
5842
5843 if test "$usb_redir" = "yes" ; then
5844   echo "CONFIG_USB_REDIR=y" >> $config_host_mak
5845   echo "USB_REDIR_CFLAGS=$usb_redir_cflags" >> $config_host_mak
5846   echo "USB_REDIR_LIBS=$usb_redir_libs" >> $config_host_mak
5847 fi
5848
5849 if test "$opengl" = "yes" ; then
5850   echo "CONFIG_OPENGL=y" >> $config_host_mak
5851   echo "OPENGL_CFLAGS=$opengl_cflags" >> $config_host_mak
5852   echo "OPENGL_LIBS=$opengl_libs" >> $config_host_mak
5853 fi
5854
5855 if test "$gbm" = "yes" ; then
5856     echo "CONFIG_GBM=y" >> $config_host_mak
5857     echo "GBM_LIBS=$gbm_libs" >> $config_host_mak
5858     echo "GBM_CFLAGS=$gbm_cflags" >> $config_host_mak
5859 fi
5860
5861
5862 if test "$avx2_opt" = "yes" ; then
5863   echo "CONFIG_AVX2_OPT=y" >> $config_host_mak
5864 fi
5865
5866 if test "$avx512f_opt" = "yes" ; then
5867   echo "CONFIG_AVX512F_OPT=y" >> $config_host_mak
5868 fi
5869
5870 # XXX: suppress that
5871 if [ "$bsd" = "yes" ] ; then
5872   echo "CONFIG_BSD=y" >> $config_host_mak
5873 fi
5874
5875 if test "$qom_cast_debug" = "yes" ; then
5876   echo "CONFIG_QOM_CAST_DEBUG=y" >> $config_host_mak
5877 fi
5878
5879 echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
5880 if test "$coroutine_pool" = "yes" ; then
5881   echo "CONFIG_COROUTINE_POOL=1" >> $config_host_mak
5882 else
5883   echo "CONFIG_COROUTINE_POOL=0" >> $config_host_mak
5884 fi
5885
5886 if test "$debug_stack_usage" = "yes" ; then
5887   echo "CONFIG_DEBUG_STACK_USAGE=y" >> $config_host_mak
5888 fi
5889
5890 if test "$crypto_afalg" = "yes" ; then
5891   echo "CONFIG_AF_ALG=y" >> $config_host_mak
5892 fi
5893
5894 if test "$open_by_handle_at" = "yes" ; then
5895   echo "CONFIG_OPEN_BY_HANDLE=y" >> $config_host_mak
5896 fi
5897
5898 if test "$linux_magic_h" = "yes" ; then
5899   echo "CONFIG_LINUX_MAGIC_H=y" >> $config_host_mak
5900 fi
5901
5902 if test "$valgrind_h" = "yes" ; then
5903   echo "CONFIG_VALGRIND_H=y" >> $config_host_mak
5904 fi
5905
5906 if test "$have_asan_iface_fiber" = "yes" ; then
5907     echo "CONFIG_ASAN_IFACE_FIBER=y" >> $config_host_mak
5908 fi
5909
5910 if test "$have_tsan" = "yes" && test "$have_tsan_iface_fiber" = "yes" ; then
5911     echo "CONFIG_TSAN=y" >> $config_host_mak
5912 fi
5913
5914 if test "$has_environ" = "yes" ; then
5915   echo "CONFIG_HAS_ENVIRON=y" >> $config_host_mak
5916 fi
5917
5918 if test "$cpuid_h" = "yes" ; then
5919   echo "CONFIG_CPUID_H=y" >> $config_host_mak
5920 fi
5921
5922 if test "$int128" = "yes" ; then
5923   echo "CONFIG_INT128=y" >> $config_host_mak
5924 fi
5925
5926 if test "$atomic128" = "yes" ; then
5927   echo "CONFIG_ATOMIC128=y" >> $config_host_mak
5928 fi
5929
5930 if test "$cmpxchg128" = "yes" ; then
5931   echo "CONFIG_CMPXCHG128=y" >> $config_host_mak
5932 fi
5933
5934 if test "$atomic64" = "yes" ; then
5935   echo "CONFIG_ATOMIC64=y" >> $config_host_mak
5936 fi
5937
5938 if test "$attralias" = "yes" ; then
5939   echo "CONFIG_ATTRIBUTE_ALIAS=y" >> $config_host_mak
5940 fi
5941
5942 if test "$getauxval" = "yes" ; then
5943   echo "CONFIG_GETAUXVAL=y" >> $config_host_mak
5944 fi
5945
5946 if test "$libssh" = "yes" ; then
5947   echo "CONFIG_LIBSSH=y" >> $config_host_mak
5948   echo "LIBSSH_CFLAGS=$libssh_cflags" >> $config_host_mak
5949   echo "LIBSSH_LIBS=$libssh_libs" >> $config_host_mak
5950 fi
5951
5952 if test "$live_block_migration" = "yes" ; then
5953   echo "CONFIG_LIVE_BLOCK_MIGRATION=y" >> $config_host_mak
5954 fi
5955
5956 if test "$tpm" = "yes"; then
5957   echo 'CONFIG_TPM=y' >> $config_host_mak
5958 fi
5959
5960 echo "TRACE_BACKENDS=$trace_backends" >> $config_host_mak
5961 if have_backend "nop"; then
5962   echo "CONFIG_TRACE_NOP=y" >> $config_host_mak
5963 fi
5964 if have_backend "simple"; then
5965   echo "CONFIG_TRACE_SIMPLE=y" >> $config_host_mak
5966   # Set the appropriate trace file.
5967   trace_file="\"$trace_file-\" FMT_pid"
5968 fi
5969 if have_backend "log"; then
5970   echo "CONFIG_TRACE_LOG=y" >> $config_host_mak
5971 fi
5972 if have_backend "ust"; then
5973   echo "CONFIG_TRACE_UST=y" >> $config_host_mak
5974   echo "LTTNG_UST_LIBS=$lttng_ust_libs" >> $config_host_mak
5975   echo "URCU_BP_LIBS=$urcu_bp_libs" >> $config_host_mak
5976 fi
5977 if have_backend "dtrace"; then
5978   echo "CONFIG_TRACE_DTRACE=y" >> $config_host_mak
5979   if test "$trace_backend_stap" = "yes" ; then
5980     echo "CONFIG_TRACE_SYSTEMTAP=y" >> $config_host_mak
5981   fi
5982 fi
5983 if have_backend "ftrace"; then
5984   if test "$linux" = "yes" ; then
5985     echo "CONFIG_TRACE_FTRACE=y" >> $config_host_mak
5986   else
5987     feature_not_found "ftrace(trace backend)" "ftrace requires Linux"
5988   fi
5989 fi
5990 if have_backend "syslog"; then
5991   if test "$posix_syslog" = "yes" ; then
5992     echo "CONFIG_TRACE_SYSLOG=y" >> $config_host_mak
5993   else
5994     feature_not_found "syslog(trace backend)" "syslog not available"
5995   fi
5996 fi
5997 echo "CONFIG_TRACE_FILE=$trace_file" >> $config_host_mak
5998
5999 if test "$rdma" = "yes" ; then
6000   echo "CONFIG_RDMA=y" >> $config_host_mak
6001   echo "RDMA_LIBS=$rdma_libs" >> $config_host_mak
6002 fi
6003
6004 if test "$pvrdma" = "yes" ; then
6005   echo "CONFIG_PVRDMA=y" >> $config_host_mak
6006 fi
6007
6008 if test "$have_rtnetlink" = "yes" ; then
6009   echo "CONFIG_RTNETLINK=y" >> $config_host_mak
6010 fi
6011
6012 if test "$libxml2" = "yes" ; then
6013   echo "CONFIG_LIBXML2=y" >> $config_host_mak
6014   echo "LIBXML2_CFLAGS=$libxml2_cflags" >> $config_host_mak
6015   echo "LIBXML2_LIBS=$libxml2_libs" >> $config_host_mak
6016 fi
6017
6018 if test "$replication" = "yes" ; then
6019   echo "CONFIG_REPLICATION=y" >> $config_host_mak
6020 fi
6021
6022 if test "$have_af_vsock" = "yes" ; then
6023   echo "CONFIG_AF_VSOCK=y" >> $config_host_mak
6024 fi
6025
6026 if test "$have_sysmacros" = "yes" ; then
6027   echo "CONFIG_SYSMACROS=y" >> $config_host_mak
6028 fi
6029
6030 if test "$have_static_assert" = "yes" ; then
6031   echo "CONFIG_STATIC_ASSERT=y" >> $config_host_mak
6032 fi
6033
6034 if test "$have_utmpx" = "yes" ; then
6035   echo "HAVE_UTMPX=y" >> $config_host_mak
6036 fi
6037 if test "$have_getrandom" = "yes" ; then
6038   echo "CONFIG_GETRANDOM=y" >> $config_host_mak
6039 fi
6040 if test "$ivshmem" = "yes" ; then
6041   echo "CONFIG_IVSHMEM=y" >> $config_host_mak
6042 fi
6043 if test "$debug_mutex" = "yes" ; then
6044   echo "CONFIG_DEBUG_MUTEX=y" >> $config_host_mak
6045 fi
6046
6047 # Hold two types of flag:
6048 #   CONFIG_THREAD_SETNAME_BYTHREAD  - we've got a way of setting the name on
6049 #                                     a thread we have a handle to
6050 #   CONFIG_PTHREAD_SETNAME_NP_W_TID - A way of doing it on a particular
6051 #                                     platform
6052 if test "$pthread_setname_np_w_tid" = "yes" ; then
6053   echo "CONFIG_THREAD_SETNAME_BYTHREAD=y" >> $config_host_mak
6054   echo "CONFIG_PTHREAD_SETNAME_NP_W_TID=y" >> $config_host_mak
6055 elif test "$pthread_setname_np_wo_tid" = "yes" ; then
6056   echo "CONFIG_THREAD_SETNAME_BYTHREAD=y" >> $config_host_mak
6057   echo "CONFIG_PTHREAD_SETNAME_NP_WO_TID=y" >> $config_host_mak
6058 fi
6059
6060 if test "$libpmem" = "yes" ; then
6061   echo "CONFIG_LIBPMEM=y" >> $config_host_mak
6062   echo "LIBPMEM_LIBS=$libpmem_libs" >> $config_host_mak
6063   echo "LIBPMEM_CFLAGS=$libpmem_cflags" >> $config_host_mak
6064 fi
6065
6066 if test "$libdaxctl" = "yes" ; then
6067   echo "CONFIG_LIBDAXCTL=y" >> $config_host_mak
6068   echo "LIBDAXCTL_LIBS=$libdaxctl_libs" >> $config_host_mak
6069 fi
6070
6071 if test "$bochs" = "yes" ; then
6072   echo "CONFIG_BOCHS=y" >> $config_host_mak
6073 fi
6074 if test "$cloop" = "yes" ; then
6075   echo "CONFIG_CLOOP=y" >> $config_host_mak
6076 fi
6077 if test "$dmg" = "yes" ; then
6078   echo "CONFIG_DMG=y" >> $config_host_mak
6079 fi
6080 if test "$qcow1" = "yes" ; then
6081   echo "CONFIG_QCOW1=y" >> $config_host_mak
6082 fi
6083 if test "$vdi" = "yes" ; then
6084   echo "CONFIG_VDI=y" >> $config_host_mak
6085 fi
6086 if test "$vvfat" = "yes" ; then
6087   echo "CONFIG_VVFAT=y" >> $config_host_mak
6088 fi
6089 if test "$qed" = "yes" ; then
6090   echo "CONFIG_QED=y" >> $config_host_mak
6091 fi
6092 if test "$parallels" = "yes" ; then
6093   echo "CONFIG_PARALLELS=y" >> $config_host_mak
6094 fi
6095 if test "$sheepdog" = "yes" ; then
6096   add_to deprecated_features "sheepdog"
6097   echo "CONFIG_SHEEPDOG=y" >> $config_host_mak
6098 fi
6099 if test "$have_mlockall" = "yes" ; then
6100   echo "HAVE_MLOCKALL=y" >> $config_host_mak
6101 fi
6102 if test "$fuzzing" = "yes" ; then
6103   # If LIB_FUZZING_ENGINE is set, assume we are running on OSS-Fuzz, and the
6104   # needed CFLAGS have already been provided
6105   if test -z "${LIB_FUZZING_ENGINE+xxx}" ; then
6106     # Add CFLAGS to tell clang to add fuzzer-related instrumentation to all the
6107     # compiled code.
6108     QEMU_CFLAGS="$QEMU_CFLAGS -fsanitize=fuzzer-no-link"
6109     # To build non-fuzzer binaries with --enable-fuzzing, link everything with
6110     # fsanitize=fuzzer-no-link. Otherwise, the linker will be unable to bind
6111     # the fuzzer-related callbacks added by instrumentation.
6112     QEMU_LDFLAGS="$QEMU_LDFLAGS -fsanitize=fuzzer-no-link"
6113     # For the actual fuzzer binaries, we need to link against the libfuzzer
6114     # library. Provide the flags for doing this in FUZZ_EXE_LDFLAGS. The meson
6115     # rule for the fuzzer adds these to the link_args. They need to be
6116     # configurable, to support OSS-Fuzz
6117     FUZZ_EXE_LDFLAGS="-fsanitize=fuzzer"
6118   else
6119     FUZZ_EXE_LDFLAGS="$LIB_FUZZING_ENGINE"
6120   fi
6121 fi
6122
6123 if test "$plugins" = "yes" ; then
6124     echo "CONFIG_PLUGIN=y" >> $config_host_mak
6125     # Copy the export object list to the build dir
6126     if test "$ld_dynamic_list" = "yes" ; then
6127         echo "CONFIG_HAS_LD_DYNAMIC_LIST=yes" >> $config_host_mak
6128         ld_symbols=qemu-plugins-ld.symbols
6129         cp "$source_path/plugins/qemu-plugins.symbols" $ld_symbols
6130     elif test "$ld_exported_symbols_list" = "yes" ; then
6131         echo "CONFIG_HAS_LD_EXPORTED_SYMBOLS_LIST=yes" >> $config_host_mak
6132         ld64_symbols=qemu-plugins-ld64.symbols
6133         echo "# Automatically generated by configure - do not modify" > $ld64_symbols
6134         grep 'qemu_' "$source_path/plugins/qemu-plugins.symbols" | sed 's/;//g' | \
6135             sed -E 's/^[[:space:]]*(.*)/_\1/' >> $ld64_symbols
6136     else
6137         error_exit \
6138             "If \$plugins=yes, either \$ld_dynamic_list or " \
6139             "\$ld_exported_symbols_list should have been set to 'yes'."
6140     fi
6141 fi
6142
6143 if test -n "$gdb_bin"; then
6144     gdb_version=$($gdb_bin --version | head -n 1)
6145     if version_ge ${gdb_version##* } 9.1; then
6146         echo "HAVE_GDB_BIN=$gdb_bin" >> $config_host_mak
6147     fi
6148 fi
6149
6150 if test "$secret_keyring" = "yes" ; then
6151   echo "CONFIG_SECRET_KEYRING=y" >> $config_host_mak
6152 fi
6153
6154 echo "ROMS=$roms" >> $config_host_mak
6155 echo "MAKE=$make" >> $config_host_mak
6156 echo "PYTHON=$python" >> $config_host_mak
6157 echo "GENISOIMAGE=$genisoimage" >> $config_host_mak
6158 echo "MESON=$meson" >> $config_host_mak
6159 echo "NINJA=$ninja" >> $config_host_mak
6160 echo "CC=$cc" >> $config_host_mak
6161 if $iasl -h > /dev/null 2>&1; then
6162   echo "CONFIG_IASL=$iasl" >> $config_host_mak
6163 fi
6164 echo "CXX=$cxx" >> $config_host_mak
6165 echo "OBJCC=$objcc" >> $config_host_mak
6166 echo "AR=$ar" >> $config_host_mak
6167 echo "ARFLAGS=$ARFLAGS" >> $config_host_mak
6168 echo "AS=$as" >> $config_host_mak
6169 echo "CCAS=$ccas" >> $config_host_mak
6170 echo "CPP=$cpp" >> $config_host_mak
6171 echo "OBJCOPY=$objcopy" >> $config_host_mak
6172 echo "LD=$ld" >> $config_host_mak
6173 echo "RANLIB=$ranlib" >> $config_host_mak
6174 echo "NM=$nm" >> $config_host_mak
6175 echo "PKG_CONFIG=$pkg_config_exe" >> $config_host_mak
6176 echo "WINDRES=$windres" >> $config_host_mak
6177 echo "CFLAGS_NOPIE=$CFLAGS_NOPIE" >> $config_host_mak
6178 echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak
6179 echo "QEMU_CXXFLAGS=$QEMU_CXXFLAGS" >> $config_host_mak
6180 echo "GLIB_CFLAGS=$glib_cflags" >> $config_host_mak
6181 echo "GLIB_LIBS=$glib_libs" >> $config_host_mak
6182 echo "QEMU_LDFLAGS=$QEMU_LDFLAGS" >> $config_host_mak
6183 echo "LD_I386_EMULATION=$ld_i386_emulation" >> $config_host_mak
6184 echo "EXESUF=$EXESUF" >> $config_host_mak
6185 echo "HOST_DSOSUF=$HOST_DSOSUF" >> $config_host_mak
6186 echo "LIBS_QGA=$libs_qga" >> $config_host_mak
6187 echo "TASN1_LIBS=$tasn1_libs" >> $config_host_mak
6188 echo "TASN1_CFLAGS=$tasn1_cflags" >> $config_host_mak
6189 if test "$gcov" = "yes" ; then
6190   echo "CONFIG_GCOV=y" >> $config_host_mak
6191 fi
6192
6193 if test "$fuzzing" != "no"; then
6194     echo "CONFIG_FUZZ=y" >> $config_host_mak
6195 fi
6196 echo "FUZZ_EXE_LDFLAGS=$FUZZ_EXE_LDFLAGS" >> $config_host_mak
6197
6198 if test "$rng_none" = "yes"; then
6199   echo "CONFIG_RNG_NONE=y" >> $config_host_mak
6200 fi
6201
6202 # use included Linux headers
6203 if test "$linux" = "yes" ; then
6204   mkdir -p linux-headers
6205   case "$cpu" in
6206   i386|x86_64|x32)
6207     linux_arch=x86
6208     ;;
6209   ppc|ppc64|ppc64le)
6210     linux_arch=powerpc
6211     ;;
6212   s390x)
6213     linux_arch=s390
6214     ;;
6215   aarch64)
6216     linux_arch=arm64
6217     ;;
6218   mips64)
6219     linux_arch=mips
6220     ;;
6221   *)
6222     # For most CPUs the kernel architecture name and QEMU CPU name match.
6223     linux_arch="$cpu"
6224     ;;
6225   esac
6226     # For non-KVM architectures we will not have asm headers
6227     if [ -e "$source_path/linux-headers/asm-$linux_arch" ]; then
6228       symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
6229     fi
6230 fi
6231
6232 for target in $target_list; do
6233     target_dir="$target"
6234     target_name=$(echo $target | cut -d '-' -f 1)
6235     mkdir -p $target_dir
6236     case $target in
6237         *-user) symlink "../qemu-$target_name" "$target_dir/qemu-$target_name" ;;
6238         *) symlink "../qemu-system-$target_name" "$target_dir/qemu-system-$target_name" ;;
6239     esac
6240 done
6241
6242 echo "CONFIG_QEMU_INTERP_PREFIX=$interp_prefix" | sed 's/%M/@0@/' >> $config_host_mak
6243 if test "$default_targets" = "yes"; then
6244   echo "CONFIG_DEFAULT_TARGETS=y" >> $config_host_mak
6245 fi
6246
6247 if test "$numa" = "yes"; then
6248   echo "CONFIG_NUMA=y" >> $config_host_mak
6249   echo "NUMA_LIBS=$numa_libs" >> $config_host_mak
6250 fi
6251
6252 if test "$ccache_cpp2" = "yes"; then
6253   echo "export CCACHE_CPP2=y" >> $config_host_mak
6254 fi
6255
6256 if test "$safe_stack" = "yes"; then
6257   echo "CONFIG_SAFESTACK=y" >> $config_host_mak
6258 fi
6259
6260 # If we're using a separate build tree, set it up now.
6261 # DIRS are directories which we simply mkdir in the build tree;
6262 # LINKS are things to symlink back into the source tree
6263 # (these can be both files and directories).
6264 # Caution: do not add files or directories here using wildcards. This
6265 # will result in problems later if a new file matching the wildcard is
6266 # added to the source tree -- nothing will cause configure to be rerun
6267 # so the build tree will be missing the link back to the new file, and
6268 # tests might fail. Prefer to keep the relevant files in their own
6269 # directory and symlink the directory instead.
6270 # UNLINK is used to remove symlinks from older development versions
6271 # that might get into the way when doing "git update" without doing
6272 # a "make distclean" in between.
6273 DIRS="tests tests/tcg tests/tcg/lm32 tests/qapi-schema tests/qtest/libqos"
6274 DIRS="$DIRS tests/qtest tests/qemu-iotests tests/vm tests/fp tests/qgraph"
6275 DIRS="$DIRS docs docs/interop fsdev scsi"
6276 DIRS="$DIRS pc-bios/optionrom pc-bios/s390-ccw"
6277 DIRS="$DIRS roms/seabios"
6278 DIRS="$DIRS contrib/plugins/"
6279 LINKS="Makefile"
6280 LINKS="$LINKS tests/tcg/lm32/Makefile"
6281 LINKS="$LINKS tests/tcg/Makefile.target"
6282 LINKS="$LINKS pc-bios/optionrom/Makefile"
6283 LINKS="$LINKS pc-bios/s390-ccw/Makefile"
6284 LINKS="$LINKS roms/seabios/Makefile"
6285 LINKS="$LINKS pc-bios/qemu-icon.bmp"
6286 LINKS="$LINKS .gdbinit scripts" # scripts needed by relative path in .gdbinit
6287 LINKS="$LINKS tests/acceptance tests/data"
6288 LINKS="$LINKS tests/qemu-iotests/check"
6289 LINKS="$LINKS python"
6290 LINKS="$LINKS contrib/plugins/Makefile "
6291 UNLINK="pc-bios/keymaps"
6292 for bios_file in \
6293     $source_path/pc-bios/*.bin \
6294     $source_path/pc-bios/*.elf \
6295     $source_path/pc-bios/*.lid \
6296     $source_path/pc-bios/*.rom \
6297     $source_path/pc-bios/*.dtb \
6298     $source_path/pc-bios/*.img \
6299     $source_path/pc-bios/openbios-* \
6300     $source_path/pc-bios/u-boot.* \
6301     $source_path/pc-bios/edk2-*.fd.bz2 \
6302     $source_path/pc-bios/palcode-*
6303 do
6304     LINKS="$LINKS pc-bios/$(basename $bios_file)"
6305 done
6306 mkdir -p $DIRS
6307 for f in $LINKS ; do
6308     if [ -e "$source_path/$f" ]; then
6309         symlink "$source_path/$f" "$f"
6310     fi
6311 done
6312 for f in $UNLINK ; do
6313     if [ -L "$f" ]; then
6314         rm -f "$f"
6315     fi
6316 done
6317
6318 (for i in $cross_cc_vars; do
6319   export $i
6320 done
6321 export target_list source_path use_containers
6322 $source_path/tests/tcg/configure.sh)
6323
6324 # temporary config to build submodules
6325 for rom in seabios; do
6326     config_mak=roms/$rom/config.mak
6327     echo "# Automatically generated by configure - do not modify" > $config_mak
6328     echo "SRC_PATH=$source_path/roms/$rom" >> $config_mak
6329     echo "AS=$as" >> $config_mak
6330     echo "CCAS=$ccas" >> $config_mak
6331     echo "CC=$cc" >> $config_mak
6332     echo "BCC=bcc" >> $config_mak
6333     echo "CPP=$cpp" >> $config_mak
6334     echo "OBJCOPY=objcopy" >> $config_mak
6335     echo "IASL=$iasl" >> $config_mak
6336     echo "LD=$ld" >> $config_mak
6337     echo "RANLIB=$ranlib" >> $config_mak
6338 done
6339
6340 if test "$skip_meson" = no; then
6341 cross="config-meson.cross.new"
6342 meson_quote() {
6343     echo "'$(echo $* | sed "s/ /','/g")'"
6344 }
6345
6346 echo "# Automatically generated by configure - do not modify" > $cross
6347 echo "[properties]" >> $cross
6348 test -z "$cxx" && echo "link_language = 'c'" >> $cross
6349 echo "[built-in options]" >> $cross
6350 echo "c_args = [${CFLAGS:+$(meson_quote $CFLAGS)}]" >> $cross
6351 echo "cpp_args = [${CXXFLAGS:+$(meson_quote $CXXFLAGS)}]" >> $cross
6352 echo "c_link_args = [${LDFLAGS:+$(meson_quote $LDFLAGS)}]" >> $cross
6353 echo "cpp_link_args = [${LDFLAGS:+$(meson_quote $LDFLAGS)}]" >> $cross
6354 echo "[binaries]" >> $cross
6355 echo "c = [$(meson_quote $cc)]" >> $cross
6356 test -n "$cxx" && echo "cpp = [$(meson_quote $cxx)]" >> $cross
6357 test -n "$objcc" && echo "objc = [$(meson_quote $objcc)]" >> $cross
6358 echo "ar = [$(meson_quote $ar)]" >> $cross
6359 echo "nm = [$(meson_quote $nm)]" >> $cross
6360 echo "pkgconfig = [$(meson_quote $pkg_config_exe)]" >> $cross
6361 echo "ranlib = [$(meson_quote $ranlib)]" >> $cross
6362 if has $sdl2_config; then
6363   echo "sdl2-config = [$(meson_quote $sdl2_config)]" >> $cross
6364 fi
6365 echo "strip = [$(meson_quote $strip)]" >> $cross
6366 echo "windres = [$(meson_quote $windres)]" >> $cross
6367 if test "$cross_compile" = "yes"; then
6368     cross_arg="--cross-file config-meson.cross"
6369     echo "[host_machine]" >> $cross
6370     if test "$mingw32" = "yes" ; then
6371         echo "system = 'windows'" >> $cross
6372     fi
6373     if test "$linux" = "yes" ; then
6374         echo "system = 'linux'" >> $cross
6375     fi
6376     if test "$darwin" = "yes" ; then
6377         echo "system = 'darwin'" >> $cross
6378     fi
6379     case "$ARCH" in
6380         i386)
6381             echo "cpu_family = 'x86'" >> $cross
6382             ;;
6383         x86_64)
6384             echo "cpu_family = 'x86_64'" >> $cross
6385             ;;
6386         ppc64le)
6387             echo "cpu_family = 'ppc64'" >> $cross
6388             ;;
6389         *)
6390             echo "cpu_family = '$ARCH'" >> $cross
6391             ;;
6392     esac
6393     echo "cpu = '$cpu'" >> $cross
6394     if test "$bigendian" = "yes" ; then
6395         echo "endian = 'big'" >> $cross
6396     else
6397         echo "endian = 'little'" >> $cross
6398     fi
6399 else
6400     cross_arg="--native-file config-meson.cross"
6401 fi
6402 mv $cross config-meson.cross
6403
6404 rm -rf meson-private meson-info meson-logs
6405 unset staticpic
6406 if ! version_ge "$($meson --version)" 0.56.0; then
6407   staticpic=$(if test "$pie" = yes; then echo true; else echo false; fi)
6408 fi
6409 NINJA=$ninja $meson setup \
6410         --prefix "$prefix" \
6411         --libdir "$libdir" \
6412         --libexecdir "$libexecdir" \
6413         --bindir "$bindir" \
6414         --includedir "$includedir" \
6415         --datadir "$datadir" \
6416         --mandir "$mandir" \
6417         --sysconfdir "$sysconfdir" \
6418         --localedir "$localedir" \
6419         --localstatedir "$local_statedir" \
6420         -Ddocdir="$docdir" \
6421         -Dqemu_firmwarepath="$firmwarepath" \
6422         -Dqemu_suffix="$qemu_suffix" \
6423         -Doptimization=$(if test "$debug" = yes; then echo 0; else echo 2; fi) \
6424         -Ddebug=$(if test "$debug_info" = yes; then echo true; else echo false; fi) \
6425         -Dwerror=$(if test "$werror" = yes; then echo true; else echo false; fi) \
6426         -Dstrip=$(if test "$strip_opt" = yes; then echo true; else echo false; fi) \
6427         -Db_pie=$(if test "$pie" = yes; then echo true; else echo false; fi) \
6428         ${staticpic:+-Db_staticpic=$staticpic} \
6429         -Db_coverage=$(if test "$gcov" = yes; then echo true; else echo false; fi) \
6430         -Db_lto=$lto -Dcfi=$cfi -Dcfi_debug=$cfi_debug \
6431         -Dmalloc=$malloc -Dmalloc_trim=$malloc_trim -Dsparse=$sparse \
6432         -Dkvm=$kvm -Dhax=$hax -Dwhpx=$whpx -Dhvf=$hvf \
6433         -Dxen=$xen -Dxen_pci_passthrough=$xen_pci_passthrough -Dtcg=$tcg \
6434         -Dcocoa=$cocoa -Dgtk=$gtk -Dmpath=$mpath -Dsdl=$sdl -Dsdl_image=$sdl_image \
6435         -Dvnc=$vnc -Dvnc_sasl=$vnc_sasl -Dvnc_jpeg=$vnc_jpeg -Dvnc_png=$vnc_png \
6436         -Dgettext=$gettext -Dxkbcommon=$xkbcommon -Du2f=$u2f -Dvirtiofsd=$virtiofsd \
6437         -Dcapstone=$capstone -Dslirp=$slirp -Dfdt=$fdt -Dbrlapi=$brlapi \
6438         -Dcurl=$curl -Dglusterfs=$glusterfs -Dbzip2=$bzip2 -Dlibiscsi=$libiscsi \
6439         -Dlibnfs=$libnfs -Diconv=$iconv -Dcurses=$curses -Dlibudev=$libudev\
6440         -Drbd=$rbd -Dlzo=$lzo -Dsnappy=$snappy -Dlzfse=$lzfse \
6441         -Dzstd=$zstd -Dseccomp=$seccomp -Dvirtfs=$virtfs -Dcap_ng=$cap_ng \
6442         -Dattr=$attr -Ddefault_devices=$default_devices \
6443         -Ddocs=$docs -Dsphinx_build=$sphinx_build -Dinstall_blobs=$blobs \
6444         -Dvhost_user_blk_server=$vhost_user_blk_server -Dmultiprocess=$multiprocess \
6445         -Dfuse=$fuse -Dfuse_lseek=$fuse_lseek -Dguest_agent_msi=$guest_agent_msi \
6446         $(if test "$default_features" = no; then echo "-Dauto_features=disabled"; fi) \
6447         -Dtcg_interpreter=$tcg_interpreter \
6448         $cross_arg \
6449         "$PWD" "$source_path"
6450
6451 if test "$?" -ne 0 ; then
6452     error_exit "meson setup failed"
6453 fi
6454 fi
6455
6456 if test -n "${deprecated_features}"; then
6457     echo "Warning, deprecated features enabled."
6458     echo "Please see docs/system/deprecated.rst"
6459     echo "  features: ${deprecated_features}"
6460 fi
6461
6462 # Save the configure command line for later reuse.
6463 cat <<EOD >config.status
6464 #!/bin/sh
6465 # Generated by configure.
6466 # Run this file to recreate the current configuration.
6467 # Compiler output produced by configure, useful for debugging
6468 # configure, is in config.log if it exists.
6469 EOD
6470
6471 preserve_env() {
6472     envname=$1
6473
6474     eval envval=\$$envname
6475
6476     if test -n "$envval"
6477     then
6478         echo "$envname='$envval'" >> config.status
6479         echo "export $envname" >> config.status
6480     else
6481         echo "unset $envname" >> config.status
6482     fi
6483 }
6484
6485 # Preserve various env variables that influence what
6486 # features/build target configure will detect
6487 preserve_env AR
6488 preserve_env AS
6489 preserve_env CC
6490 preserve_env CPP
6491 preserve_env CXX
6492 preserve_env INSTALL
6493 preserve_env LD
6494 preserve_env LD_LIBRARY_PATH
6495 preserve_env LIBTOOL
6496 preserve_env MAKE
6497 preserve_env NM
6498 preserve_env OBJCOPY
6499 preserve_env PATH
6500 preserve_env PKG_CONFIG
6501 preserve_env PKG_CONFIG_LIBDIR
6502 preserve_env PKG_CONFIG_PATH
6503 preserve_env PYTHON
6504 preserve_env SDL2_CONFIG
6505 preserve_env SMBD
6506 preserve_env STRIP
6507 preserve_env WINDRES
6508
6509 printf "exec" >>config.status
6510 for i in "$0" "$@"; do
6511   test "$i" = --skip-meson || printf " %s" "$(quote_sh "$i")" >>config.status
6512 done
6513 echo ' "$@"' >>config.status
6514 chmod +x config.status
6515
6516 rm -r "$TMPDIR1"