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 print_error() {
  93     (echo
  94     echo "ERROR: $1"
  95     while test -n "$2"; do
  96         echo "       $2"
  97         shift
  98     done
  99     echo) >&2
 100 }
 101
 102 error_exit() {
 103     print_error "$@"
 104     exit 1
 105 }
 106
 107 do_compiler() {
 108     # Run the compiler, capturing its output to the log. First argument
 109     # is compiler binary to execute.
 110     local compiler="$1"
 111     shift
 112     if test -n "$BASH_VERSION"; then eval '
 113         echo >>config.log "
 114 funcs: ${FUNCNAME[*]}
 115 lines: ${BASH_LINENO[*]}"
 116     '; fi
 117     echo $compiler "$@" >> config.log
 118     $compiler "$@" >> config.log 2>&1 || return $?
 119     # Test passed. If this is an --enable-werror build, rerun
 120     # the test with -Werror and bail out if it fails. This
 121     # makes warning-generating-errors in configure test code
 122     # obvious to developers.
 123     if test "$werror" != "yes"; then
 124         return 0
 125     fi
 126     # Don't bother rerunning the compile if we were already using -Werror
 127     case "$*" in
 128         *-Werror*)
 129            return 0
 130         ;;
 131     esac
 132     echo $compiler -Werror "$@" >> config.log
 133     $compiler -Werror "$@" >> config.log 2>&1 && return $?
 134     error_exit "configure test passed without -Werror but failed with -Werror." \
 135         "This is probably a bug in the configure script. The failing command" \
 136         "will be at the bottom of config.log." \
 137         "You can run configure with --disable-werror to bypass this check."
 138 }
 139
 140 do_cc() {
 141     do_compiler "$cc" "$@"
 142 }
 143
 144 do_cxx() {
 145     do_compiler "$cxx" "$@"
 146 }
 147
 148 # Append $2 to the variable named $1, with space separation
 149 add_to() {
 150     eval $1=\${$1:+\"\$$1 \"}\$2
 151 }
 152
 153 update_cxxflags() {
 154     # Set QEMU_CXXFLAGS from QEMU_CFLAGS by filtering out those
 155     # options which some versions of GCC's C++ compiler complain about
 156     # because they only make sense for C programs.
 157     QEMU_CXXFLAGS="$QEMU_CXXFLAGS -D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS"
 158     CONFIGURE_CXXFLAGS=$(echo "$CONFIGURE_CFLAGS" | sed s/-std=gnu99/-std=gnu++11/)
 159     for arg in $QEMU_CFLAGS; do
 160         case $arg in
 161             -Wstrict-prototypes|-Wmissing-prototypes|-Wnested-externs|\
 162             -Wold-style-declaration|-Wold-style-definition|-Wredundant-decls)
 163                 ;;
 164             *)
 165                 QEMU_CXXFLAGS=${QEMU_CXXFLAGS:+$QEMU_CXXFLAGS }$arg
 166                 ;;
 167         esac
 168     done
 169 }
 170
 171 compile_object() {
 172   local_cflags="$1"
 173   do_cc $CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -c -o $TMPO $TMPC
 174 }
 175
 176 compile_prog() {
 177   local_cflags="$1"
 178   local_ldflags="$2"
 179   do_cc $CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC \
 180       $LDFLAGS $CONFIGURE_LDFLAGS $QEMU_LDFLAGS $local_ldflags
 181 }
 182
 183 # symbolically link $1 to $2.  Portable version of "ln -sf".
 184 symlink() {
 185   rm -rf "$2"
 186   mkdir -p "$(dirname "$2")"
 187   ln -s "$1" "$2"
 188 }
 189
 190 # check whether a command is available to this shell (may be either an
 191 # executable or a builtin)
 192 has() {
 193     type "$1" >/dev/null 2>&1
 194 }
 195
 196 version_ge () {
 197     local_ver1=`echo $1 | tr . ' '`
 198     local_ver2=`echo $2 | tr . ' '`
 199     while true; do
 200         set x $local_ver1
 201         local_first=${2-0}
 202         # 'shift 2' if $2 is set, or 'shift' if $2 is not set
 203         shift ${2:+2}
 204         local_ver1=$*
 205         set x $local_ver2
 206         # the second argument finished, the first must be greater or equal
 207         test $# = 1 && return 0
 208         test $local_first -lt $2 && return 1
 209         test $local_first -gt $2 && return 0
 210         shift ${2:+2}
 211         local_ver2=$*
 212     done
 213 }
 214
 215 have_backend () {
 216     echo "$trace_backends" | grep "$1" >/dev/null
 217 }
 218
 219 glob() {
 220     eval test -z '"${1#'"$2"'}"'
 221 }
 222
 223 ld_has() {
 224     $ld --help 2>/dev/null | grep ".$1" >/dev/null 2>&1
 225 }
 226
 227 if printf %s\\n "$source_path" "$PWD" | grep -q "[[:space:]:]";
 228 then
 229   error_exit "main directory cannot contain spaces nor colons"
 230 fi
 231
 232 # default parameters
 233 cpu=""
 234 iasl="iasl"
 235 interp_prefix="/usr/gnemul/qemu-%M"
 236 static="no"
 237 cross_prefix=""
 238 audio_drv_list=""
 239 block_drv_rw_whitelist=""
 240 block_drv_ro_whitelist=""
 241 host_cc="cc"
 242 audio_win_int=""
 243 libs_qga=""
 244 debug_info="yes"
 245 stack_protector=""
 246 safe_stack=""
 247 use_containers="yes"
 248 gdb_bin=$(command -v "gdb-multiarch" || command -v "gdb")
 249
 250 if test -e "$source_path/.git"
 251 then
 252     git_update=yes
 253     git_submodules="ui/keycodemapdb"
 254     git_submodules="$git_submodules tests/fp/berkeley-testfloat-3"
 255     git_submodules="$git_submodules tests/fp/berkeley-softfloat-3"
 256 else
 257     git_update=no
 258     git_submodules=""
 259
 260     if ! test -f "$source_path/ui/keycodemapdb/README"
 261     then
 262         echo
 263         echo "ERROR: missing file $source_path/ui/keycodemapdb/README"
 264         echo
 265         echo "This is not a GIT checkout but module content appears to"
 266         echo "be missing. Do not use 'git archive' or GitHub download links"
 267         echo "to acquire QEMU source archives. Non-GIT builds are only"
 268         echo "supported with source archives linked from:"
 269         echo
 270         echo "  https://www.qemu.org/download/#source"
 271         echo
 272         echo "Developers working with GIT can use scripts/archive-source.sh"
 273         echo "if they need to create valid source archives."
 274         echo
 275         exit 1
 276     fi
 277 fi
 278 git="git"
 279
 280 # Don't accept a target_list environment variable.
 281 unset target_list
 282 unset target_list_exclude
 283
 284 # Default value for a variable defining feature "foo".
 285 #  * foo="no"  feature will only be used if --enable-foo arg is given
 286 #  * foo=""    feature will be searched for, and if found, will be used
 287 #              unless --disable-foo is given
 288 #  * foo="yes" this value will only be set by --enable-foo flag.
 289 #              feature will searched for,
 290 #              if not found, configure exits with error
 291 #
 292 # Always add --enable-foo and --disable-foo command line args.
 293 # Distributions want to ensure that several features are compiled in, and it
 294 # is impossible without a --enable-foo that exits if a feature is not found.
 295
 296 brlapi=""
 297 curl=""
 298 iconv="auto"
 299 curses="auto"
 300 docs=""
 301 fdt="auto"
 302 netmap="no"
 303 sdl="auto"
 304 sdl_image="auto"
 305 virtfs=""
 306 mpath="auto"
 307 vnc="enabled"
 308 sparse="auto"
 309 vde=""
 310 vnc_sasl="auto"
 311 vnc_jpeg="auto"
 312 vnc_png="auto"
 313 xkbcommon="auto"
 314 xen=""
 315 xen_ctrl_version=""
 316 xen_pci_passthrough="auto"
 317 linux_aio=""
 318 linux_io_uring=""
 319 cap_ng=""
 320 attr=""
 321 libattr=""
 322 xfs=""
 323 tcg="enabled"
 324 membarrier=""
 325 vhost_net=""
 326 vhost_crypto=""
 327 vhost_scsi=""
 328 vhost_vsock=""
 329 vhost_user=""
 330 vhost_user_fs=""
 331 kvm="auto"
 332 hax="auto"
 333 hvf="auto"
 334 whpx="auto"
 335 rdma=""
 336 pvrdma=""
 337 gprof="no"
 338 debug_tcg="no"
 339 debug="no"
 340 sanitizers="no"
 341 tsan="no"
 342 fortify_source=""
 343 strip_opt="yes"
 344 tcg_interpreter="no"
 345 bigendian="no"
 346 mingw32="no"
 347 gcov="no"
 348 EXESUF=""
 349 HOST_DSOSUF=".so"
 350 modules="no"
 351 module_upgrades="no"
 352 prefix="/usr/local"
 353 qemu_suffix="qemu"
 354 slirp="auto"
 355 oss_lib=""
 356 bsd="no"
 357 linux="no"
 358 solaris="no"
 359 profiler="no"
 360 cocoa="auto"
 361 softmmu="yes"
 362 linux_user="no"
 363 bsd_user="no"
 364 blobs="yes"
 365 edk2_blobs="no"
 366 pkgversion=""
 367 pie=""
 368 qom_cast_debug="yes"
 369 trace_backends="log"
 370 trace_file="trace"
 371 spice=""
 372 rbd=""
 373 smartcard=""
 374 u2f="auto"
 375 libusb=""
 376 usb_redir=""
 377 opengl=""
 378 opengl_dmabuf="no"
 379 cpuid_h="no"
 380 avx2_opt=""
 381 capstone="auto"
 382 lzo=""
 383 snappy=""
 384 bzip2=""
 385 lzfse=""
 386 zstd=""
 387 guest_agent=""
 388 guest_agent_with_vss="no"
 389 guest_agent_ntddscsi="no"
 390 guest_agent_msi=""
 391 vss_win32_sdk=""
 392 win_sdk="no"
 393 want_tools=""
 394 libiscsi=""
 395 libnfs=""
 396 coroutine=""
 397 coroutine_pool=""
 398 debug_stack_usage="no"
 399 crypto_afalg="no"
 400 seccomp=""
 401 glusterfs=""
 402 glusterfs_xlator_opt="no"
 403 glusterfs_discard="no"
 404 glusterfs_fallocate="no"
 405 glusterfs_zerofill="no"
 406 glusterfs_ftruncate_has_stat="no"
 407 glusterfs_iocb_has_stat="no"
 408 gtk=""
 409 gtk_gl="no"
 410 tls_priority="NORMAL"
 411 gnutls=""
 412 nettle=""
 413 nettle_xts="no"
 414 gcrypt=""
 415 gcrypt_hmac="no"
 416 gcrypt_xts="no"
 417 qemu_private_xts="yes"
 418 auth_pam=""
 419 vte=""
 420 virglrenderer=""
 421 tpm=""
 422 libssh=""
 423 live_block_migration="yes"
 424 numa=""
 425 tcmalloc="no"
 426 jemalloc="no"
 427 replication="yes"
 428 bochs="yes"
 429 cloop="yes"
 430 dmg="yes"
 431 qcow1="yes"
 432 vdi="yes"
 433 vvfat="yes"
 434 qed="yes"
 435 parallels="yes"
 436 sheepdog="yes"
 437 libxml2=""
 438 debug_mutex="no"
 439 libpmem=""
 440 default_devices="yes"
 441 plugins="no"
 442 fuzzing="no"
 443 rng_none="no"
 444 secret_keyring=""
 445 libdaxctl=""
 446 meson=""
 447 ninja=""
 448 skip_meson=no
 449 gettext=""
 450
 451 bogus_os="no"
 452 malloc_trim="auto"
 453
 454 # parse CC options first
 455 for opt do
 456   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 457   case "$opt" in
 458   --cross-prefix=*) cross_prefix="$optarg"
 459   ;;
 460   --cc=*) CC="$optarg"
 461   ;;
 462   --cxx=*) CXX="$optarg"
 463   ;;
 464   --cpu=*) cpu="$optarg"
 465   ;;
 466   --extra-cflags=*) QEMU_CFLAGS="$QEMU_CFLAGS $optarg"
 467                     QEMU_LDFLAGS="$QEMU_LDFLAGS $optarg"
 468   ;;
 469   --extra-cxxflags=*) QEMU_CXXFLAGS="$QEMU_CXXFLAGS $optarg"
 470   ;;
 471   --extra-ldflags=*) QEMU_LDFLAGS="$QEMU_LDFLAGS $optarg"
 472                      EXTRA_LDFLAGS="$optarg"
 473   ;;
 474   --enable-debug-info) debug_info="yes"
 475   ;;
 476   --disable-debug-info) debug_info="no"
 477   ;;
 478   --cross-cc-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-cc-FOO option"
 479   ;;
 480   --cross-cc-cflags-*) cc_arch=${opt#--cross-cc-flags-}; cc_arch=${cc_arch%%=*}
 481                       eval "cross_cc_cflags_${cc_arch}=\$optarg"
 482                       cross_cc_vars="$cross_cc_vars cross_cc_cflags_${cc_arch}"
 483   ;;
 484   --cross-cc-*) cc_arch=${opt#--cross-cc-}; cc_arch=${cc_arch%%=*}
 485                 cc_archs="$cc_archs $cc_arch"
 486                 eval "cross_cc_${cc_arch}=\$optarg"
 487                 cross_cc_vars="$cross_cc_vars cross_cc_${cc_arch}"
 488   ;;
 489   esac
 490 done
 491 # OS specific
 492 # Using uname is really, really broken.  Once we have the right set of checks
 493 # we can eliminate its usage altogether.
 494
 495 # Preferred compiler:
 496 #  ${CC} (if set)
 497 #  ${cross_prefix}gcc (if cross-prefix specified)
 498 #  system compiler
 499 if test -z "${CC}${cross_prefix}"; then
 500   cc="$host_cc"
 501 else
 502   cc="${CC-${cross_prefix}gcc}"
 503 fi
 504
 505 if test -z "${CXX}${cross_prefix}"; then
 506   cxx="c++"
 507 else
 508   cxx="${CXX-${cross_prefix}g++}"
 509 fi
 510
 511 ar="${AR-${cross_prefix}ar}"
 512 as="${AS-${cross_prefix}as}"
 513 ccas="${CCAS-$cc}"
 514 cpp="${CPP-$cc -E}"
 515 objcopy="${OBJCOPY-${cross_prefix}objcopy}"
 516 ld="${LD-${cross_prefix}ld}"
 517 ranlib="${RANLIB-${cross_prefix}ranlib}"
 518 nm="${NM-${cross_prefix}nm}"
 519 strip="${STRIP-${cross_prefix}strip}"
 520 windres="${WINDRES-${cross_prefix}windres}"
 521 pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
 522 query_pkg_config() {
 523     "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
 524 }
 525 pkg_config=query_pkg_config
 526 sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"
 527
 528 # If the user hasn't specified ARFLAGS, default to 'rv', just as make does.
 529 ARFLAGS="${ARFLAGS-rv}"
 530
 531 # default flags for all hosts
 532 # We use -fwrapv to tell the compiler that we require a C dialect where
 533 # left shift of signed integers is well defined and has the expected
 534 # 2s-complement style results. (Both clang and gcc agree that it
 535 # provides these semantics.)
 536 QEMU_CFLAGS="-fno-strict-aliasing -fno-common -fwrapv $QEMU_CFLAGS"
 537 QEMU_CFLAGS="-Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
 538 QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
 539 QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
 540 QEMU_INCLUDES="-iquote . -iquote ${source_path} -iquote ${source_path}/accel/tcg -iquote ${source_path}/include"
 541 QEMU_INCLUDES="$QEMU_INCLUDES -iquote ${source_path}/disas/libvixl"
 542
 543 # Flags that are needed during configure but later taken care of by Meson
 544 CONFIGURE_CFLAGS="-std=gnu99 -Wall"
 545 CONFIGURE_LDFLAGS=
 546
 547
 548 check_define() {
 549 cat > $TMPC <<EOF
 550 #if !defined($1)
 551 #error $1 not defined
 552 #endif
 553 int main(void) { return 0; }
 554 EOF
 555   compile_object
 556 }
 557
 558 check_include() {
 559 cat > $TMPC <<EOF
 560 #include <$1>
 561 int main(void) { return 0; }
 562 EOF
 563   compile_object
 564 }
 565
 566 write_c_skeleton() {
 567     cat > $TMPC <<EOF
 568 int main(void) { return 0; }
 569 EOF
 570 }
 571
 572 write_c_fuzzer_skeleton() {
 573     cat > $TMPC <<EOF
 574 #include <stdint.h>
 575 #include <sys/types.h>
 576 int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
 577 int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { return 0; }
 578 EOF
 579 }
 580
 581 if check_define __linux__ ; then
 582   targetos="Linux"
 583 elif check_define _WIN32 ; then
 584   targetos='MINGW32'
 585 elif check_define __OpenBSD__ ; then
 586   targetos='OpenBSD'
 587 elif check_define __sun__ ; then
 588   targetos='SunOS'
 589 elif check_define __HAIKU__ ; then
 590   targetos='Haiku'
 591 elif check_define __FreeBSD__ ; then
 592   targetos='FreeBSD'
 593 elif check_define __FreeBSD_kernel__ && check_define __GLIBC__; then
 594   targetos='GNU/kFreeBSD'
 595 elif check_define __DragonFly__ ; then
 596   targetos='DragonFly'
 597 elif check_define __NetBSD__; then
 598   targetos='NetBSD'
 599 elif check_define __APPLE__; then
 600   targetos='Darwin'
 601 else
 602   # This is a fatal error, but don't report it yet, because we
 603   # might be going to just print the --help text, or it might
 604   # be the result of a missing compiler.
 605   targetos='bogus'
 606   bogus_os='yes'
 607 fi
 608
 609 # Some host OSes need non-standard checks for which CPU to use.
 610 # Note that these checks are broken for cross-compilation: if you're
 611 # cross-compiling to one of these OSes then you'll need to specify
 612 # the correct CPU with the --cpu option.
 613 case $targetos in
 614 Darwin)
 615   # on Leopard most of the system is 32-bit, so we have to ask the kernel if we can
 616   # run 64-bit userspace code.
 617   # If the user didn't specify a CPU explicitly and the kernel says this is
 618   # 64 bit hw, then assume x86_64. Otherwise fall through to the usual detection code.
 619   if test -z "$cpu" && test "$(sysctl -n hw.optional.x86_64)" = "1"; then
 620     cpu="x86_64"
 621   fi
 622   ;;
 623 SunOS)
 624   # $(uname -m) returns i86pc even on an x86_64 box, so default based on isainfo
 625   if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then
 626     cpu="x86_64"
 627   fi
 628 esac
 629
 630 if test ! -z "$cpu" ; then
 631   # command line argument
 632   :
 633 elif check_define __i386__ ; then
 634   cpu="i386"
 635 elif check_define __x86_64__ ; then
 636   if check_define __ILP32__ ; then
 637     cpu="x32"
 638   else
 639     cpu="x86_64"
 640   fi
 641 elif check_define __sparc__ ; then
 642   if check_define __arch64__ ; then
 643     cpu="sparc64"
 644   else
 645     cpu="sparc"
 646   fi
 647 elif check_define _ARCH_PPC ; then
 648   if check_define _ARCH_PPC64 ; then
 649     if check_define _LITTLE_ENDIAN ; then
 650       cpu="ppc64le"
 651     else
 652       cpu="ppc64"
 653     fi
 654   else
 655     cpu="ppc"
 656   fi
 657 elif check_define __mips__ ; then
 658   cpu="mips"
 659 elif check_define __s390__ ; then
 660   if check_define __s390x__ ; then
 661     cpu="s390x"
 662   else
 663     cpu="s390"
 664   fi
 665 elif check_define __riscv ; then
 666   if check_define _LP64 ; then
 667     cpu="riscv64"
 668   else
 669     cpu="riscv32"
 670   fi
 671 elif check_define __arm__ ; then
 672   cpu="arm"
 673 elif check_define __aarch64__ ; then
 674   cpu="aarch64"
 675 else
 676   cpu=$(uname -m)
 677 fi
 678
 679 ARCH=
 680 # Normalise host CPU name and set ARCH.
 681 # Note that this case should only have supported host CPUs, not guests.
 682 case "$cpu" in
 683   ppc|ppc64|s390x|sparc64|x32|riscv32|riscv64)
 684   ;;
 685   ppc64le)
 686     ARCH="ppc64"
 687   ;;
 688   i386|i486|i586|i686|i86pc|BePC)
 689     cpu="i386"
 690   ;;
 691   x86_64|amd64)
 692     cpu="x86_64"
 693   ;;
 694   armv*b|armv*l|arm)
 695     cpu="arm"
 696   ;;
 697   aarch64)
 698     cpu="aarch64"
 699   ;;
 700   mips*)
 701     cpu="mips"
 702   ;;
 703   sparc|sun4[cdmuv])
 704     cpu="sparc"
 705   ;;
 706   *)
 707     # This will result in either an error or falling back to TCI later
 708     ARCH=unknown
 709   ;;
 710 esac
 711 if test -z "$ARCH"; then
 712   ARCH="$cpu"
 713 fi
 714
 715 # OS specific
 716
 717 case $targetos in
 718 MINGW32*)
 719   mingw32="yes"
 720   vhost_user="no"
 721   audio_possible_drivers="dsound sdl"
 722   if check_include dsound.h; then
 723     audio_drv_list="dsound"
 724   else
 725     audio_drv_list=""
 726   fi
 727   supported_os="yes"
 728   pie="no"
 729 ;;
 730 GNU/kFreeBSD)
 731   bsd="yes"
 732   audio_drv_list="oss try-sdl"
 733   audio_possible_drivers="oss sdl pa"
 734 ;;
 735 FreeBSD)
 736   bsd="yes"
 737   make="${MAKE-gmake}"
 738   audio_drv_list="oss try-sdl"
 739   audio_possible_drivers="oss sdl pa"
 740   # needed for kinfo_getvmmap(3) in libutil.h
 741   netmap=""  # enable netmap autodetect
 742 ;;
 743 DragonFly)
 744   bsd="yes"
 745   make="${MAKE-gmake}"
 746   audio_drv_list="oss try-sdl"
 747   audio_possible_drivers="oss sdl pa"
 748 ;;
 749 NetBSD)
 750   bsd="yes"
 751   make="${MAKE-gmake}"
 752   audio_drv_list="oss try-sdl"
 753   audio_possible_drivers="oss sdl"
 754   oss_lib="-lossaudio"
 755 ;;
 756 OpenBSD)
 757   bsd="yes"
 758   make="${MAKE-gmake}"
 759   audio_drv_list="try-sdl"
 760   audio_possible_drivers="sdl"
 761 ;;
 762 Darwin)
 763   bsd="yes"
 764   darwin="yes"
 765   if [ "$cpu" = "x86_64" ] ; then
 766     QEMU_CFLAGS="-arch x86_64 $QEMU_CFLAGS"
 767     QEMU_LDFLAGS="-arch x86_64 $QEMU_LDFLAGS"
 768   fi
 769   cocoa="enabled"
 770   audio_drv_list="coreaudio try-sdl"
 771   audio_possible_drivers="coreaudio sdl"
 772   QEMU_LDFLAGS="-framework CoreFoundation -framework IOKit $QEMU_LDFLAGS"
 773   # Disable attempts to use ObjectiveC features in os/object.h since they
 774   # won't work when we're compiling with gcc as a C compiler.
 775   QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
 776 ;;
 777 SunOS)
 778   solaris="yes"
 779   make="${MAKE-gmake}"
 780   smbd="${SMBD-/usr/sfw/sbin/smbd}"
 781   if test -f /usr/include/sys/soundcard.h ; then
 782     audio_drv_list="oss try-sdl"
 783   fi
 784   audio_possible_drivers="oss sdl"
 785 # needed for CMSG_ macros in sys/socket.h
 786   QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
 787 # needed for TIOCWIN* defines in termios.h
 788   QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
 789 ;;
 790 Haiku)
 791   haiku="yes"
 792   QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -DBSD_SOURCE $QEMU_CFLAGS"
 793 ;;
 794 Linux)
 795   audio_drv_list="try-pa oss"
 796   audio_possible_drivers="oss alsa sdl pa"
 797   linux="yes"
 798   linux_user="yes"
 799   QEMU_INCLUDES="-isystem ${source_path}/linux-headers -Ilinux-headers $QEMU_INCLUDES"
 800 ;;
 801 esac
 802
 803 if [ "$bsd" = "yes" ] ; then
 804   if [ "$darwin" != "yes" ] ; then
 805     bsd_user="yes"
 806   fi
 807 fi
 808
 809 : ${make=${MAKE-make}}
 810
 811 # We prefer python 3.x. A bare 'python' is traditionally
 812 # python 2.x, but some distros have it as python 3.x, so
 813 # we check that too
 814 python=
 815 explicit_python=no
 816 for binary in "${PYTHON-python3}" python
 817 do
 818     if has "$binary"
 819     then
 820         python=$(command -v "$binary")
 821         break
 822     fi
 823 done
 824
 825 sphinx_build=
 826 for binary in sphinx-build-3 sphinx-build
 827 do
 828     if has "$binary"
 829     then
 830         sphinx_build=$(command -v "$binary")
 831         break
 832     fi
 833 done
 834
 835 # Check for ancillary tools used in testing
 836 genisoimage=
 837 for binary in genisoimage mkisofs
 838 do
 839     if has $binary
 840     then
 841         genisoimage=$(command -v "$binary")
 842         break
 843     fi
 844 done
 845
 846 : ${smbd=${SMBD-/usr/sbin/smbd}}
 847
 848 # Default objcc to clang if available, otherwise use CC
 849 if has clang; then
 850   objcc=clang
 851 else
 852   objcc="$cc"
 853 fi
 854
 855 if test "$mingw32" = "yes" ; then
 856   EXESUF=".exe"
 857   HOST_DSOSUF=".dll"
 858   # MinGW needs -mthreads for TLS and macro _MT.
 859   CONFIGURE_CFLAGS="-mthreads $CONFIGURE_CFLAGS"
 860   write_c_skeleton;
 861   prefix="/qemu"
 862   qemu_suffix=""
 863   libs_qga="-lws2_32 -lwinmm -lpowrprof -lwtsapi32 -lwininet -liphlpapi -lnetapi32 $libs_qga"
 864 fi
 865
 866 werror=""
 867
 868 for opt do
 869   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 870   case "$opt" in
 871   --help|-h) show_help=yes
 872   ;;
 873   --version|-V) exec cat $source_path/VERSION
 874   ;;
 875   --prefix=*) prefix="$optarg"
 876   ;;
 877   --interp-prefix=*) interp_prefix="$optarg"
 878   ;;
 879   --cross-prefix=*)
 880   ;;
 881   --cc=*)
 882   ;;
 883   --host-cc=*) host_cc="$optarg"
 884   ;;
 885   --cxx=*)
 886   ;;
 887   --iasl=*) iasl="$optarg"
 888   ;;
 889   --objcc=*) objcc="$optarg"
 890   ;;
 891   --make=*) make="$optarg"
 892   ;;
 893   --install=*)
 894   ;;
 895   --python=*) python="$optarg" ; explicit_python=yes
 896   ;;
 897   --sphinx-build=*) sphinx_build="$optarg"
 898   ;;
 899   --skip-meson) skip_meson=yes
 900   ;;
 901   --meson=*) meson="$optarg"
 902   ;;
 903   --ninja=*) ninja="$optarg"
 904   ;;
 905   --smbd=*) smbd="$optarg"
 906   ;;
 907   --extra-cflags=*)
 908   ;;
 909   --extra-cxxflags=*)
 910   ;;
 911   --extra-ldflags=*)
 912   ;;
 913   --enable-debug-info)
 914   ;;
 915   --disable-debug-info)
 916   ;;
 917   --cross-cc-*)
 918   ;;
 919   --enable-modules)
 920       modules="yes"
 921   ;;
 922   --disable-modules)
 923       modules="no"
 924   ;;
 925   --disable-module-upgrades) module_upgrades="no"
 926   ;;
 927   --enable-module-upgrades) module_upgrades="yes"
 928   ;;
 929   --cpu=*)
 930   ;;
 931   --target-list=*) target_list="$optarg"
 932                    if test "$target_list_exclude"; then
 933                        error_exit "Can't mix --target-list with --target-list-exclude"
 934                    fi
 935   ;;
 936   --target-list-exclude=*) target_list_exclude="$optarg"
 937                    if test "$target_list"; then
 938                        error_exit "Can't mix --target-list-exclude with --target-list"
 939                    fi
 940   ;;
 941   --enable-trace-backends=*) trace_backends="$optarg"
 942   ;;
 943   # XXX: backwards compatibility
 944   --enable-trace-backend=*) trace_backends="$optarg"
 945   ;;
 946   --with-trace-file=*) trace_file="$optarg"
 947   ;;
 948   --with-default-devices) default_devices="yes"
 949   ;;
 950   --without-default-devices) default_devices="no"
 951   ;;
 952   --enable-gprof) gprof="yes"
 953   ;;
 954   --enable-gcov) gcov="yes"
 955   ;;
 956   --static)
 957     static="yes"
 958     QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
 959   ;;
 960   --mandir=*) mandir="$optarg"
 961   ;;
 962   --bindir=*) bindir="$optarg"
 963   ;;
 964   --libdir=*) libdir="$optarg"
 965   ;;
 966   --libexecdir=*) libexecdir="$optarg"
 967   ;;
 968   --includedir=*) includedir="$optarg"
 969   ;;
 970   --datadir=*) datadir="$optarg"
 971   ;;
 972   --with-suffix=*) qemu_suffix="$optarg"
 973   ;;
 974   --docdir=*) qemu_docdir="$optarg"
 975   ;;
 976   --sysconfdir=*) sysconfdir="$optarg"
 977   ;;
 978   --localstatedir=*) local_statedir="$optarg"
 979   ;;
 980   --firmwarepath=*) firmwarepath="$optarg"
 981   ;;
 982   --host=*|--build=*|\
 983   --disable-dependency-tracking|\
 984   --sbindir=*|--sharedstatedir=*|\
 985   --oldincludedir=*|--datarootdir=*|--infodir=*|--localedir=*|\
 986   --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
 987     # These switches are silently ignored, for compatibility with
 988     # autoconf-generated configure scripts. This allows QEMU's
 989     # configure to be used by RPM and similar macros that set
 990     # lots of directory switches by default.
 991   ;;
 992   --disable-sdl) sdl="disabled"
 993   ;;
 994   --enable-sdl) sdl="enabled"
 995   ;;
 996   --disable-sdl-image) sdl_image="disabled"
 997   ;;
 998   --enable-sdl-image) sdl_image="enabled"
 999   ;;
1000   --disable-qom-cast-debug) qom_cast_debug="no"
1001   ;;
1002   --enable-qom-cast-debug) qom_cast_debug="yes"
1003   ;;
1004   --disable-virtfs) virtfs="no"
1005   ;;
1006   --enable-virtfs) virtfs="yes"
1007   ;;
1008   --disable-mpath) mpath="disabled"
1009   ;;
1010   --enable-mpath) mpath="enabled"
1011   ;;
1012   --disable-vnc) vnc="disabled"
1013   ;;
1014   --enable-vnc) vnc="enabled"
1015   ;;
1016   --disable-gettext) gettext="false"
1017   ;;
1018   --enable-gettext) gettext="true"
1019   ;;
1020   --oss-lib=*) oss_lib="$optarg"
1021   ;;
1022   --audio-drv-list=*) audio_drv_list="$optarg"
1023   ;;
1024   --block-drv-rw-whitelist=*|--block-drv-whitelist=*) block_drv_rw_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
1025   ;;
1026   --block-drv-ro-whitelist=*) block_drv_ro_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
1027   ;;
1028   --enable-debug-tcg) debug_tcg="yes"
1029   ;;
1030   --disable-debug-tcg) debug_tcg="no"
1031   ;;
1032   --enable-debug)
1033       # Enable debugging options that aren't excessively noisy
1034       debug_tcg="yes"
1035       debug_mutex="yes"
1036       debug="yes"
1037       strip_opt="no"
1038       fortify_source="no"
1039   ;;
1040   --enable-sanitizers) sanitizers="yes"
1041   ;;
1042   --disable-sanitizers) sanitizers="no"
1043   ;;
1044   --enable-tsan) tsan="yes"
1045   ;;
1046   --disable-tsan) tsan="no"
1047   ;;
1048   --enable-sparse) sparse="enabled"
1049   ;;
1050   --disable-sparse) sparse="disabled"
1051   ;;
1052   --disable-strip) strip_opt="no"
1053   ;;
1054   --disable-vnc-sasl) vnc_sasl="disabled"
1055   ;;
1056   --enable-vnc-sasl) vnc_sasl="enabled"
1057   ;;
1058   --disable-vnc-jpeg) vnc_jpeg="disabled"
1059   ;;
1060   --enable-vnc-jpeg) vnc_jpeg="enabled"
1061   ;;
1062   --disable-vnc-png) vnc_png="disabled"
1063   ;;
1064   --enable-vnc-png) vnc_png="enabled"
1065   ;;
1066   --disable-slirp) slirp="disabled"
1067   ;;
1068   --enable-slirp=git) slirp="internal"
1069   ;;
1070   --enable-slirp=system) slirp="system"
1071   ;;
1072   --disable-vde) vde="no"
1073   ;;
1074   --enable-vde) vde="yes"
1075   ;;
1076   --disable-netmap) netmap="no"
1077   ;;
1078   --enable-netmap) netmap="yes"
1079   ;;
1080   --disable-xen) xen="disabled"
1081   ;;
1082   --enable-xen) xen="enabled"
1083   ;;
1084   --disable-xen-pci-passthrough) xen_pci_passthrough="disabled"
1085   ;;
1086   --enable-xen-pci-passthrough) xen_pci_passthrough="enabled"
1087   ;;
1088   --disable-brlapi) brlapi="no"
1089   ;;
1090   --enable-brlapi) brlapi="yes"
1091   ;;
1092   --disable-kvm) kvm="disabled"
1093   ;;
1094   --enable-kvm) kvm="enabled"
1095   ;;
1096   --disable-hax) hax="disabled"
1097   ;;
1098   --enable-hax) hax="enabled"
1099   ;;
1100   --disable-hvf) hvf="disabled"
1101   ;;
1102   --enable-hvf) hvf="enabled"
1103   ;;
1104   --disable-whpx) whpx="disabled"
1105   ;;
1106   --enable-whpx) whpx="enabled"
1107   ;;
1108   --disable-tcg-interpreter) tcg_interpreter="no"
1109   ;;
1110   --enable-tcg-interpreter) tcg_interpreter="yes"
1111   ;;
1112   --disable-cap-ng)  cap_ng="no"
1113   ;;
1114   --enable-cap-ng) cap_ng="yes"
1115   ;;
1116   --disable-tcg) tcg="disabled"
1117   ;;
1118   --enable-tcg) tcg="enabled"
1119   ;;
1120   --disable-malloc-trim) malloc_trim="disabled"
1121   ;;
1122   --enable-malloc-trim) malloc_trim="enabled"
1123   ;;
1124   --disable-spice) spice="no"
1125   ;;
1126   --enable-spice) spice="yes"
1127   ;;
1128   --disable-libiscsi) libiscsi="no"
1129   ;;
1130   --enable-libiscsi) libiscsi="yes"
1131   ;;
1132   --disable-libnfs) libnfs="no"
1133   ;;
1134   --enable-libnfs) libnfs="yes"
1135   ;;
1136   --enable-profiler) profiler="yes"
1137   ;;
1138   --disable-cocoa) cocoa="disabled"
1139   ;;
1140   --enable-cocoa)
1141       cocoa="enabled" ;
1142       audio_drv_list="coreaudio $(echo $audio_drv_list | sed s,coreaudio,,g)"
1143   ;;
1144   --disable-system) softmmu="no"
1145   ;;
1146   --enable-system) softmmu="yes"
1147   ;;
1148   --disable-user)
1149       linux_user="no" ;
1150       bsd_user="no" ;
1151   ;;
1152   --enable-user) ;;
1153   --disable-linux-user) linux_user="no"
1154   ;;
1155   --enable-linux-user) linux_user="yes"
1156   ;;
1157   --disable-bsd-user) bsd_user="no"
1158   ;;
1159   --enable-bsd-user) bsd_user="yes"
1160   ;;
1161   --enable-pie) pie="yes"
1162   ;;
1163   --disable-pie) pie="no"
1164   ;;
1165   --enable-werror) werror="yes"
1166   ;;
1167   --disable-werror) werror="no"
1168   ;;
1169   --enable-stack-protector) stack_protector="yes"
1170   ;;
1171   --disable-stack-protector) stack_protector="no"
1172   ;;
1173   --enable-safe-stack) safe_stack="yes"
1174   ;;
1175   --disable-safe-stack) safe_stack="no"
1176   ;;
1177   --disable-curses) curses="disabled"
1178   ;;
1179   --enable-curses) curses="enabled"
1180   ;;
1181   --disable-iconv) iconv="disabled"
1182   ;;
1183   --enable-iconv) iconv="enabled"
1184   ;;
1185   --disable-curl) curl="no"
1186   ;;
1187   --enable-curl) curl="yes"
1188   ;;
1189   --disable-fdt) fdt="disabled"
1190   ;;
1191   --enable-fdt) fdt="enabled"
1192   ;;
1193   --enable-fdt=git) fdt="internal"
1194   ;;
1195   --enable-fdt=system) fdt="system"
1196   ;;
1197   --disable-linux-aio) linux_aio="no"
1198   ;;
1199   --enable-linux-aio) linux_aio="yes"
1200   ;;
1201   --disable-linux-io-uring) linux_io_uring="no"
1202   ;;
1203   --enable-linux-io-uring) linux_io_uring="yes"
1204   ;;
1205   --disable-attr) attr="no"
1206   ;;
1207   --enable-attr) attr="yes"
1208   ;;
1209   --disable-membarrier) membarrier="no"
1210   ;;
1211   --enable-membarrier) membarrier="yes"
1212   ;;
1213   --disable-blobs) blobs="no"
1214   ;;
1215   --with-pkgversion=*) pkgversion="$optarg"
1216   ;;
1217   --with-coroutine=*) coroutine="$optarg"
1218   ;;
1219   --disable-coroutine-pool) coroutine_pool="no"
1220   ;;
1221   --enable-coroutine-pool) coroutine_pool="yes"
1222   ;;
1223   --enable-debug-stack-usage) debug_stack_usage="yes"
1224   ;;
1225   --enable-crypto-afalg) crypto_afalg="yes"
1226   ;;
1227   --disable-crypto-afalg) crypto_afalg="no"
1228   ;;
1229   --disable-docs) docs="no"
1230   ;;
1231   --enable-docs) docs="yes"
1232   ;;
1233   --disable-vhost-net) vhost_net="no"
1234   ;;
1235   --enable-vhost-net) vhost_net="yes"
1236   ;;
1237   --disable-vhost-crypto) vhost_crypto="no"
1238   ;;
1239   --enable-vhost-crypto) vhost_crypto="yes"
1240   ;;
1241   --disable-vhost-scsi) vhost_scsi="no"
1242   ;;
1243   --enable-vhost-scsi) vhost_scsi="yes"
1244   ;;
1245   --disable-vhost-vsock) vhost_vsock="no"
1246   ;;
1247   --enable-vhost-vsock) vhost_vsock="yes"
1248   ;;
1249   --disable-vhost-user-fs) vhost_user_fs="no"
1250   ;;
1251   --enable-vhost-user-fs) vhost_user_fs="yes"
1252   ;;
1253   --disable-opengl) opengl="no"
1254   ;;
1255   --enable-opengl) opengl="yes"
1256   ;;
1257   --disable-rbd) rbd="no"
1258   ;;
1259   --enable-rbd) rbd="yes"
1260   ;;
1261   --disable-xfsctl) xfs="no"
1262   ;;
1263   --enable-xfsctl) xfs="yes"
1264   ;;
1265   --disable-smartcard) smartcard="no"
1266   ;;
1267   --enable-smartcard) smartcard="yes"
1268   ;;
1269   --disable-u2f) u2f="disabled"
1270   ;;
1271   --enable-u2f) u2f="enabled"
1272   ;;
1273   --disable-libusb) libusb="no"
1274   ;;
1275   --enable-libusb) libusb="yes"
1276   ;;
1277   --disable-usb-redir) usb_redir="no"
1278   ;;
1279   --enable-usb-redir) usb_redir="yes"
1280   ;;
1281   --disable-zlib-test)
1282   ;;
1283   --disable-lzo) lzo="no"
1284   ;;
1285   --enable-lzo) lzo="yes"
1286   ;;
1287   --disable-snappy) snappy="no"
1288   ;;
1289   --enable-snappy) snappy="yes"
1290   ;;
1291   --disable-bzip2) bzip2="no"
1292   ;;
1293   --enable-bzip2) bzip2="yes"
1294   ;;
1295   --enable-lzfse) lzfse="yes"
1296   ;;
1297   --disable-lzfse) lzfse="no"
1298   ;;
1299   --disable-zstd) zstd="no"
1300   ;;
1301   --enable-zstd) zstd="yes"
1302   ;;
1303   --enable-guest-agent) guest_agent="yes"
1304   ;;
1305   --disable-guest-agent) guest_agent="no"
1306   ;;
1307   --enable-guest-agent-msi) guest_agent_msi="yes"
1308   ;;
1309   --disable-guest-agent-msi) guest_agent_msi="no"
1310   ;;
1311   --with-vss-sdk) vss_win32_sdk=""
1312   ;;
1313   --with-vss-sdk=*) vss_win32_sdk="$optarg"
1314   ;;
1315   --without-vss-sdk) vss_win32_sdk="no"
1316   ;;
1317   --with-win-sdk) win_sdk=""
1318   ;;
1319   --with-win-sdk=*) win_sdk="$optarg"
1320   ;;
1321   --without-win-sdk) win_sdk="no"
1322   ;;
1323   --enable-tools) want_tools="yes"
1324   ;;
1325   --disable-tools) want_tools="no"
1326   ;;
1327   --enable-seccomp) seccomp="yes"
1328   ;;
1329   --disable-seccomp) seccomp="no"
1330   ;;
1331   --disable-glusterfs) glusterfs="no"
1332   ;;
1333   --disable-avx2) avx2_opt="no"
1334   ;;
1335   --enable-avx2) avx2_opt="yes"
1336   ;;
1337   --disable-avx512f) avx512f_opt="no"
1338   ;;
1339   --enable-avx512f) avx512f_opt="yes"
1340   ;;
1341
1342   --enable-glusterfs) glusterfs="yes"
1343   ;;
1344   --disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
1345       echo "$0: $opt is obsolete, virtio-blk data-plane is always on" >&2
1346   ;;
1347   --enable-vhdx|--disable-vhdx)
1348       echo "$0: $opt is obsolete, VHDX driver is always built" >&2
1349   ;;
1350   --enable-uuid|--disable-uuid)
1351       echo "$0: $opt is obsolete, UUID support is always built" >&2
1352   ;;
1353   --disable-gtk) gtk="no"
1354   ;;
1355   --enable-gtk) gtk="yes"
1356   ;;
1357   --tls-priority=*) tls_priority="$optarg"
1358   ;;
1359   --disable-gnutls) gnutls="no"
1360   ;;
1361   --enable-gnutls) gnutls="yes"
1362   ;;
1363   --disable-nettle) nettle="no"
1364   ;;
1365   --enable-nettle) nettle="yes"
1366   ;;
1367   --disable-gcrypt) gcrypt="no"
1368   ;;
1369   --enable-gcrypt) gcrypt="yes"
1370   ;;
1371   --disable-auth-pam) auth_pam="no"
1372   ;;
1373   --enable-auth-pam) auth_pam="yes"
1374   ;;
1375   --enable-rdma) rdma="yes"
1376   ;;
1377   --disable-rdma) rdma="no"
1378   ;;
1379   --enable-pvrdma) pvrdma="yes"
1380   ;;
1381   --disable-pvrdma) pvrdma="no"
1382   ;;
1383   --disable-vte) vte="no"
1384   ;;
1385   --enable-vte) vte="yes"
1386   ;;
1387   --disable-virglrenderer) virglrenderer="no"
1388   ;;
1389   --enable-virglrenderer) virglrenderer="yes"
1390   ;;
1391   --disable-tpm) tpm="no"
1392   ;;
1393   --enable-tpm) tpm="yes"
1394   ;;
1395   --disable-libssh) libssh="no"
1396   ;;
1397   --enable-libssh) libssh="yes"
1398   ;;
1399   --disable-live-block-migration) live_block_migration="no"
1400   ;;
1401   --enable-live-block-migration) live_block_migration="yes"
1402   ;;
1403   --disable-numa) numa="no"
1404   ;;
1405   --enable-numa) numa="yes"
1406   ;;
1407   --disable-libxml2) libxml2="no"
1408   ;;
1409   --enable-libxml2) libxml2="yes"
1410   ;;
1411   --disable-tcmalloc) tcmalloc="no"
1412   ;;
1413   --enable-tcmalloc) tcmalloc="yes"
1414   ;;
1415   --disable-jemalloc) jemalloc="no"
1416   ;;
1417   --enable-jemalloc) jemalloc="yes"
1418   ;;
1419   --disable-replication) replication="no"
1420   ;;
1421   --enable-replication) replication="yes"
1422   ;;
1423   --disable-bochs) bochs="no"
1424   ;;
1425   --enable-bochs) bochs="yes"
1426   ;;
1427   --disable-cloop) cloop="no"
1428   ;;
1429   --enable-cloop) cloop="yes"
1430   ;;
1431   --disable-dmg) dmg="no"
1432   ;;
1433   --enable-dmg) dmg="yes"
1434   ;;
1435   --disable-qcow1) qcow1="no"
1436   ;;
1437   --enable-qcow1) qcow1="yes"
1438   ;;
1439   --disable-vdi) vdi="no"
1440   ;;
1441   --enable-vdi) vdi="yes"
1442   ;;
1443   --disable-vvfat) vvfat="no"
1444   ;;
1445   --enable-vvfat) vvfat="yes"
1446   ;;
1447   --disable-qed) qed="no"
1448   ;;
1449   --enable-qed) qed="yes"
1450   ;;
1451   --disable-parallels) parallels="no"
1452   ;;
1453   --enable-parallels) parallels="yes"
1454   ;;
1455   --disable-sheepdog) sheepdog="no"
1456   ;;
1457   --enable-sheepdog) sheepdog="yes"
1458   ;;
1459   --disable-vhost-user) vhost_user="no"
1460   ;;
1461   --enable-vhost-user) vhost_user="yes"
1462   ;;
1463   --disable-vhost-vdpa) vhost_vdpa="no"
1464   ;;
1465   --enable-vhost-vdpa) vhost_vdpa="yes"
1466   ;;
1467   --disable-vhost-kernel) vhost_kernel="no"
1468   ;;
1469   --enable-vhost-kernel) vhost_kernel="yes"
1470   ;;
1471   --disable-capstone) capstone="disabled"
1472   ;;
1473   --enable-capstone) capstone="enabled"
1474   ;;
1475   --enable-capstone=git) capstone="internal"
1476   ;;
1477   --enable-capstone=system) capstone="system"
1478   ;;
1479   --with-git=*) git="$optarg"
1480   ;;
1481   --enable-git-update) git_update=yes
1482   ;;
1483   --disable-git-update) git_update=no
1484   ;;
1485   --enable-debug-mutex) debug_mutex=yes
1486   ;;
1487   --disable-debug-mutex) debug_mutex=no
1488   ;;
1489   --enable-libpmem) libpmem=yes
1490   ;;
1491   --disable-libpmem) libpmem=no
1492   ;;
1493   --enable-xkbcommon) xkbcommon="enabled"
1494   ;;
1495   --disable-xkbcommon) xkbcommon="disabled"
1496   ;;
1497   --enable-plugins) plugins="yes"
1498   ;;
1499   --disable-plugins) plugins="no"
1500   ;;
1501   --enable-containers) use_containers="yes"
1502   ;;
1503   --disable-containers) use_containers="no"
1504   ;;
1505   --enable-fuzzing) fuzzing=yes
1506   ;;
1507   --disable-fuzzing) fuzzing=no
1508   ;;
1509   --gdb=*) gdb_bin="$optarg"
1510   ;;
1511   --enable-rng-none) rng_none=yes
1512   ;;
1513   --disable-rng-none) rng_none=no
1514   ;;
1515   --enable-keyring) secret_keyring="yes"
1516   ;;
1517   --disable-keyring) secret_keyring="no"
1518   ;;
1519   --enable-libdaxctl) libdaxctl=yes
1520   ;;
1521   --disable-libdaxctl) libdaxctl=no
1522   ;;
1523   *)
1524       echo "ERROR: unknown option $opt"
1525       echo "Try '$0 --help' for more information"
1526       exit 1
1527   ;;
1528   esac
1529 done
1530
1531 firmwarepath="${firmwarepath:-$prefix/share/qemu-firmware}"
1532 libdir="${libdir:-$prefix/lib}"
1533 libexecdir="${libexecdir:-$prefix/libexec}"
1534 includedir="${includedir:-$prefix/include}"
1535
1536 if test "$mingw32" = "yes" ; then
1537     mandir="$prefix"
1538     datadir="$prefix"
1539     docdir="$prefix"
1540     bindir="$prefix"
1541     sysconfdir="$prefix"
1542     local_statedir=
1543 else
1544     mandir="${mandir:-$prefix/share/man}"
1545     datadir="${datadir:-$prefix/share}"
1546     docdir="${docdir:-$prefix/share/doc}"
1547     bindir="${bindir:-$prefix/bin}"
1548     sysconfdir="${sysconfdir:-$prefix/etc}"
1549     local_statedir="${local_statedir:-$prefix/var}"
1550 fi
1551
1552 case "$cpu" in
1553     ppc)
1554            CPU_CFLAGS="-m32"
1555            QEMU_LDFLAGS="-m32 $QEMU_LDFLAGS"
1556            ;;
1557     ppc64)
1558            CPU_CFLAGS="-m64"
1559            QEMU_LDFLAGS="-m64 $QEMU_LDFLAGS"
1560            ;;
1561     sparc)
1562            CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc"
1563            QEMU_LDFLAGS="-m32 -mv8plus $QEMU_LDFLAGS"
1564            ;;
1565     sparc64)
1566            CPU_CFLAGS="-m64 -mcpu=ultrasparc"
1567            QEMU_LDFLAGS="-m64 $QEMU_LDFLAGS"
1568            ;;
1569     s390)
1570            CPU_CFLAGS="-m31"
1571            QEMU_LDFLAGS="-m31 $QEMU_LDFLAGS"
1572            ;;
1573     s390x)
1574            CPU_CFLAGS="-m64"
1575            QEMU_LDFLAGS="-m64 $QEMU_LDFLAGS"
1576            ;;
1577     i386)
1578            CPU_CFLAGS="-m32"
1579            QEMU_LDFLAGS="-m32 $QEMU_LDFLAGS"
1580            ;;
1581     x86_64)
1582            # ??? Only extremely old AMD cpus do not have cmpxchg16b.
1583            # If we truly care, we should simply detect this case at
1584            # runtime and generate the fallback to serial emulation.
1585            CPU_CFLAGS="-m64 -mcx16"
1586            QEMU_LDFLAGS="-m64 $QEMU_LDFLAGS"
1587            ;;
1588     x32)
1589            CPU_CFLAGS="-mx32"
1590            QEMU_LDFLAGS="-mx32 $QEMU_LDFLAGS"
1591            ;;
1592     # No special flags required for other host CPUs
1593 esac
1594
1595 eval "cross_cc_${cpu}=\$host_cc"
1596 cross_cc_vars="$cross_cc_vars cross_cc_${cpu}"
1597 QEMU_CFLAGS="$CPU_CFLAGS $QEMU_CFLAGS"
1598
1599 # For user-mode emulation the host arch has to be one we explicitly
1600 # support, even if we're using TCI.
1601 if [ "$ARCH" = "unknown" ]; then
1602   bsd_user="no"
1603   linux_user="no"
1604 fi
1605
1606 default_target_list=""
1607 deprecated_targets_list=ppc64abi32-linux-user,tilegx-linux-user,lm32-softmmu,unicore32-softmmu
1608 deprecated_features=""
1609 mak_wilds=""
1610
1611 if [ "$softmmu" = "yes" ]; then
1612     mak_wilds="${mak_wilds} $source_path/default-configs/targets/*-softmmu.mak"
1613 fi
1614 if [ "$linux_user" = "yes" ]; then
1615     mak_wilds="${mak_wilds} $source_path/default-configs/targets/*-linux-user.mak"
1616 fi
1617 if [ "$bsd_user" = "yes" ]; then
1618     mak_wilds="${mak_wilds} $source_path/default-configs/targets/*-bsd-user.mak"
1619 fi
1620
1621 # If the user doesn't explicitly specify a deprecated target we will
1622 # skip it.
1623 if test -z "$target_list"; then
1624     if test -z "$target_list_exclude"; then
1625         target_list_exclude="$deprecated_targets_list"
1626     else
1627         target_list_exclude="$target_list_exclude,$deprecated_targets_list"
1628     fi
1629 fi
1630
1631 for config in $mak_wilds; do
1632     target="$(basename "$config" .mak)"
1633     if echo "$target_list_exclude" | grep -vq "$target"; then
1634         default_target_list="${default_target_list} $target"
1635     fi
1636 done
1637
1638 # Enumerate public trace backends for --help output
1639 trace_backend_list=$(echo $(grep -le '^PUBLIC = True$' "$source_path"/scripts/tracetool/backend/*.py | sed -e 's/^.*\/\(.*\)\.py$/\1/'))
1640
1641 if test x"$show_help" = x"yes" ; then
1642 cat << EOF
1643
1644 Usage: configure [options]
1645 Options: [defaults in brackets after descriptions]
1646
1647 Standard options:
1648   --help                   print this message
1649   --prefix=PREFIX          install in PREFIX [$prefix]
1650   --interp-prefix=PREFIX   where to find shared libraries, etc.
1651                            use %M for cpu name [$interp_prefix]
1652   --target-list=LIST       set target list (default: build everything)
1653 $(echo Available targets: $default_target_list | \
1654   fold -s -w 53 | sed -e 's/^/                           /')
1655   --target-list-exclude=LIST exclude a set of targets from the default target-list
1656
1657 Advanced options (experts only):
1658   --cross-prefix=PREFIX    use PREFIX for compile tools [$cross_prefix]
1659   --cc=CC                  use C compiler CC [$cc]
1660   --iasl=IASL              use ACPI compiler IASL [$iasl]
1661   --host-cc=CC             use C compiler CC [$host_cc] for code run at
1662                            build time
1663   --cxx=CXX                use C++ compiler CXX [$cxx]
1664   --objcc=OBJCC            use Objective-C compiler OBJCC [$objcc]
1665   --extra-cflags=CFLAGS    append extra C compiler flags QEMU_CFLAGS
1666   --extra-cxxflags=CXXFLAGS append extra C++ compiler flags QEMU_CXXFLAGS
1667   --extra-ldflags=LDFLAGS  append extra linker flags LDFLAGS
1668   --cross-cc-ARCH=CC       use compiler when building ARCH guest test cases
1669   --cross-cc-flags-ARCH=   use compiler flags when building ARCH guest tests
1670   --make=MAKE              use specified make [$make]
1671   --python=PYTHON          use specified python [$python]
1672   --sphinx-build=SPHINX    use specified sphinx-build [$sphinx_build]
1673   --meson=MESON            use specified meson [$meson]
1674   --ninja=NINJA            use specified ninja [$ninja]
1675   --smbd=SMBD              use specified smbd [$smbd]
1676   --with-git=GIT           use specified git [$git]
1677   --static                 enable static build [$static]
1678   --mandir=PATH            install man pages in PATH
1679   --datadir=PATH           install firmware in PATH/$qemu_suffix
1680   --docdir=PATH            install documentation in PATH/$qemu_suffix
1681   --bindir=PATH            install binaries in PATH
1682   --libdir=PATH            install libraries in PATH
1683   --libexecdir=PATH        install helper binaries in PATH
1684   --sysconfdir=PATH        install config in PATH/$qemu_suffix
1685   --localstatedir=PATH     install local state in PATH (set at runtime on win32)
1686   --firmwarepath=PATH      search PATH for firmware files
1687   --efi-aarch64=PATH       PATH of efi file to use for aarch64 VMs.
1688   --with-suffix=SUFFIX     suffix for QEMU data inside datadir/libdir/sysconfdir/docdir [$qemu_suffix]
1689   --with-pkgversion=VERS   use specified string as sub-version of the package
1690   --enable-debug           enable common debug build options
1691   --enable-sanitizers      enable default sanitizers
1692   --enable-tsan            enable thread sanitizer
1693   --disable-strip          disable stripping binaries
1694   --disable-werror         disable compilation abort on warning
1695   --disable-stack-protector disable compiler-provided stack protection
1696   --audio-drv-list=LIST    set audio drivers list:
1697                            Available drivers: $audio_possible_drivers
1698   --block-drv-whitelist=L  Same as --block-drv-rw-whitelist=L
1699   --block-drv-rw-whitelist=L
1700                            set block driver read-write whitelist
1701                            (affects only QEMU, not qemu-img)
1702   --block-drv-ro-whitelist=L
1703                            set block driver read-only whitelist
1704                            (affects only QEMU, not qemu-img)
1705   --enable-trace-backends=B Set trace backend
1706                            Available backends: $trace_backend_list
1707   --with-trace-file=NAME   Full PATH,NAME of file to store traces
1708                            Default:trace-<pid>
1709   --disable-slirp          disable SLIRP userspace network connectivity
1710   --enable-tcg-interpreter enable TCG with bytecode interpreter (TCI)
1711   --enable-malloc-trim     enable libc malloc_trim() for memory optimization
1712   --oss-lib                path to OSS library
1713   --cpu=CPU                Build for host CPU [$cpu]
1714   --with-coroutine=BACKEND coroutine backend. Supported options:
1715                            ucontext, sigaltstack, windows
1716   --enable-gcov            enable test coverage analysis with gcov
1717   --disable-blobs          disable installing provided firmware blobs
1718   --with-vss-sdk=SDK-path  enable Windows VSS support in QEMU Guest Agent
1719   --with-win-sdk=SDK-path  path to Windows Platform SDK (to build VSS .tlb)
1720   --tls-priority           default TLS protocol/cipher priority string
1721   --enable-gprof           QEMU profiling with gprof
1722   --enable-profiler        profiler support
1723   --enable-debug-stack-usage
1724                            track the maximum stack usage of stacks created by qemu_alloc_stack
1725   --enable-plugins
1726                            enable plugins via shared library loading
1727   --disable-containers     don't use containers for cross-building
1728   --gdb=GDB-path           gdb to use for gdbstub tests [$gdb_bin]
1729
1730 Optional features, enabled with --enable-FEATURE and
1731 disabled with --disable-FEATURE, default is enabled if available:
1732
1733   system          all system emulation targets
1734   user            supported user emulation targets
1735   linux-user      all linux usermode emulation targets
1736   bsd-user        all BSD usermode emulation targets
1737   docs            build documentation
1738   guest-agent     build the QEMU Guest Agent
1739   guest-agent-msi build guest agent Windows MSI installation package
1740   pie             Position Independent Executables
1741   modules         modules support (non-Windows)
1742   module-upgrades try to load modules from alternate paths for upgrades
1743   debug-tcg       TCG debugging (default is disabled)
1744   debug-info      debugging information
1745   sparse          sparse checker
1746   safe-stack      SafeStack Stack Smash Protection. Depends on
1747                   clang/llvm >= 3.7 and requires coroutine backend ucontext.
1748
1749   gnutls          GNUTLS cryptography support
1750   nettle          nettle cryptography support
1751   gcrypt          libgcrypt cryptography support
1752   auth-pam        PAM access control
1753   sdl             SDL UI
1754   sdl-image       SDL Image support for icons
1755   gtk             gtk UI
1756   vte             vte support for the gtk UI
1757   curses          curses UI
1758   iconv           font glyph conversion support
1759   vnc             VNC UI support
1760   vnc-sasl        SASL encryption for VNC server
1761   vnc-jpeg        JPEG lossy compression for VNC server
1762   vnc-png         PNG compression for VNC server
1763   cocoa           Cocoa UI (Mac OS X only)
1764   virtfs          VirtFS
1765   mpath           Multipath persistent reservation passthrough
1766   xen             xen backend driver support
1767   xen-pci-passthrough    PCI passthrough support for Xen
1768   brlapi          BrlAPI (Braile)
1769   curl            curl connectivity
1770   membarrier      membarrier system call (for Linux 4.14+ or Windows)
1771   fdt             fdt device tree
1772   kvm             KVM acceleration support
1773   hax             HAX acceleration support
1774   hvf             Hypervisor.framework acceleration support
1775   whpx            Windows Hypervisor Platform acceleration support
1776   rdma            Enable RDMA-based migration
1777   pvrdma          Enable PVRDMA support
1778   vde             support for vde network
1779   netmap          support for netmap network
1780   linux-aio       Linux AIO support
1781   linux-io-uring  Linux io_uring support
1782   cap-ng          libcap-ng support
1783   attr            attr and xattr support
1784   vhost-net       vhost-net kernel acceleration support
1785   vhost-vsock     virtio sockets device support
1786   vhost-scsi      vhost-scsi kernel target support
1787   vhost-crypto    vhost-user-crypto backend support
1788   vhost-kernel    vhost kernel backend support
1789   vhost-user      vhost-user backend support
1790   vhost-vdpa      vhost-vdpa kernel backend support
1791   spice           spice
1792   rbd             rados block device (rbd)
1793   libiscsi        iscsi support
1794   libnfs          nfs support
1795   smartcard       smartcard support (libcacard)
1796   u2f             U2F support (u2f-emu)
1797   libusb          libusb (for usb passthrough)
1798   live-block-migration   Block migration in the main migration stream
1799   usb-redir       usb network redirection support
1800   lzo             support of lzo compression library
1801   snappy          support of snappy compression library
1802   bzip2           support of bzip2 compression library
1803                   (for reading bzip2-compressed dmg images)
1804   lzfse           support of lzfse compression library
1805                   (for reading lzfse-compressed dmg images)
1806   zstd            support for zstd compression library
1807                   (for migration compression and qcow2 cluster compression)
1808   seccomp         seccomp support
1809   coroutine-pool  coroutine freelist (better performance)
1810   glusterfs       GlusterFS backend
1811   tpm             TPM support
1812   libssh          ssh block device support
1813   numa            libnuma support
1814   libxml2         for Parallels image format
1815   tcmalloc        tcmalloc support
1816   jemalloc        jemalloc support
1817   avx2            AVX2 optimization support
1818   avx512f         AVX512F optimization support
1819   replication     replication support
1820   opengl          opengl support
1821   virglrenderer   virgl rendering support
1822   xfsctl          xfsctl support
1823   qom-cast-debug  cast debugging support
1824   tools           build qemu-io, qemu-nbd and qemu-img tools
1825   bochs           bochs image format support
1826   cloop           cloop image format support
1827   dmg             dmg image format support
1828   qcow1           qcow v1 image format support
1829   vdi             vdi image format support
1830   vvfat           vvfat image format support
1831   qed             qed image format support
1832   parallels       parallels image format support
1833   sheepdog        sheepdog block driver support
1834   crypto-afalg    Linux AF_ALG crypto backend driver
1835   capstone        capstone disassembler support
1836   debug-mutex     mutex debugging support
1837   libpmem         libpmem support
1838   xkbcommon       xkbcommon support
1839   rng-none        dummy RNG, avoid using /dev/(u)random and getrandom()
1840   libdaxctl       libdaxctl support
1841
1842 NOTE: The object files are built at the place where configure is launched
1843 EOF
1844 exit 0
1845 fi
1846
1847 # Remove old dependency files to make sure that they get properly regenerated
1848 rm -f */config-devices.mak.d
1849
1850 if test -z "$python"
1851 then
1852     error_exit "Python not found. Use --python=/path/to/python"
1853 fi
1854
1855 # Note that if the Python conditional here evaluates True we will exit
1856 # with status 1 which is a shell 'false' value.
1857 if ! $python -c 'import sys; sys.exit(sys.version_info < (3,6))'; then
1858   error_exit "Cannot use '$python', Python >= 3.6 is required." \
1859       "Use --python=/path/to/python to specify a supported Python."
1860 fi
1861
1862 # Preserve python version since some functionality is dependent on it
1863 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)
1864
1865 # Suppress writing compiled files
1866 python="$python -B"
1867
1868 if test -z "$meson"; then
1869     if test "$explicit_python" = no && has meson && version_ge "$(meson --version)" 0.55.1; then
1870         meson=meson
1871     elif test -e "${source_path}/.git" && test $git_update = 'yes' ; then
1872         meson=git
1873     elif test -e "${source_path}/meson/meson.py" ; then
1874         meson=internal
1875     else
1876         if test "$explicit_python" = yes; then
1877             error_exit "--python requires using QEMU's embedded Meson distribution, but it was not found."
1878         else
1879             error_exit "Meson not found.  Use --meson=/path/to/meson"
1880         fi
1881     fi
1882 else
1883     # Meson uses its own Python interpreter to invoke other Python scripts,
1884     # but the user wants to use the one they specified with --python.
1885     #
1886     # We do not want to override the distro Python interpreter (and sometimes
1887     # cannot: for example in Homebrew /usr/bin/meson is a bash script), so
1888     # just require --meson=git|internal together with --python.
1889     if test "$explicit_python" = yes; then
1890         case "$meson" in
1891             git | internal) ;;
1892             *) error_exit "--python requires using QEMU's embedded Meson distribution." ;;
1893         esac
1894     fi
1895 fi
1896
1897 if test "$meson" = git; then
1898     git_submodules="${git_submodules} meson"
1899 fi
1900
1901 case "$meson" in
1902     git | internal)
1903         if ! $python -c 'import pkg_resources' > /dev/null 2>&1; then
1904             error_exit "Python setuptools not found"
1905         fi
1906         meson="$python ${source_path}/meson/meson.py"
1907         ;;
1908     *) meson=$(command -v "$meson") ;;
1909 esac
1910
1911 # Probe for ninja (used for compdb)
1912
1913 if test -z "$ninja"; then
1914     for c in ninja ninja-build samu; do
1915         if has $c; then
1916             ninja=$(command -v "$c")
1917             break
1918         fi
1919     done
1920 fi
1921
1922 # Check that the C compiler works. Doing this here before testing
1923 # the host CPU ensures that we had a valid CC to autodetect the
1924 # $cpu var (and we should bail right here if that's not the case).
1925 # It also allows the help message to be printed without a CC.
1926 write_c_skeleton;
1927 if compile_object ; then
1928   : C compiler works ok
1929 else
1930     error_exit "\"$cc\" either does not exist or does not work"
1931 fi
1932 if ! compile_prog ; then
1933     error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
1934 fi
1935
1936 # Consult white-list to determine whether to enable werror
1937 # by default.  Only enable by default for git builds
1938 if test -z "$werror" ; then
1939     if test -e "$source_path/.git" && \
1940         { test "$linux" = "yes" || test "$mingw32" = "yes"; }; then
1941         werror="yes"
1942     else
1943         werror="no"
1944     fi
1945 fi
1946
1947 if test "$bogus_os" = "yes"; then
1948     # Now that we know that we're not printing the help and that
1949     # the compiler works (so the results of the check_defines we used
1950     # to identify the OS are reliable), if we didn't recognize the
1951     # host OS we should stop now.
1952     error_exit "Unrecognized host OS (uname -s reports '$(uname -s)')"
1953 fi
1954
1955 # Check whether the compiler matches our minimum requirements:
1956 cat > $TMPC << EOF
1957 #if defined(__clang_major__) && defined(__clang_minor__)
1958 # ifdef __apple_build_version__
1959 #  if __clang_major__ < 5 || (__clang_major__ == 5 && __clang_minor__ < 1)
1960 #   error You need at least XCode Clang v5.1 to compile QEMU
1961 #  endif
1962 # else
1963 #  if __clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ < 4)
1964 #   error You need at least Clang v3.4 to compile QEMU
1965 #  endif
1966 # endif
1967 #elif defined(__GNUC__) && defined(__GNUC_MINOR__)
1968 # if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8)
1969 #  error You need at least GCC v4.8 to compile QEMU
1970 # endif
1971 #else
1972 # error You either need GCC or Clang to compiler QEMU
1973 #endif
1974 int main (void) { return 0; }
1975 EOF
1976 if ! compile_prog "" "" ; then
1977     error_exit "You need at least GCC v4.8 or Clang v3.4 (or XCode Clang v5.1)"
1978 fi
1979
1980 # Accumulate -Wfoo and -Wno-bar separately.
1981 # We will list all of the enable flags first, and the disable flags second.
1982 # Note that we do not add -Werror, because that would enable it for all
1983 # configure tests. If a configure test failed due to -Werror this would
1984 # just silently disable some features, so it's too error prone.
1985
1986 warn_flags=
1987 add_to warn_flags -Wold-style-declaration
1988 add_to warn_flags -Wold-style-definition
1989 add_to warn_flags -Wtype-limits
1990 add_to warn_flags -Wformat-security
1991 add_to warn_flags -Wformat-y2k
1992 add_to warn_flags -Winit-self
1993 add_to warn_flags -Wignored-qualifiers
1994 add_to warn_flags -Wempty-body
1995 add_to warn_flags -Wnested-externs
1996 add_to warn_flags -Wendif-labels
1997 add_to warn_flags -Wexpansion-to-defined
1998
1999 nowarn_flags=
2000 add_to nowarn_flags -Wno-initializer-overrides
2001 add_to nowarn_flags -Wno-missing-include-dirs
2002 add_to nowarn_flags -Wno-shift-negative-value
2003 add_to nowarn_flags -Wno-string-plus-int
2004 add_to nowarn_flags -Wno-typedef-redefinition
2005 add_to nowarn_flags -Wno-tautological-type-limit-compare
2006 add_to nowarn_flags -Wno-psabi
2007
2008 gcc_flags="$warn_flags $nowarn_flags"
2009
2010 cc_has_warning_flag() {
2011     write_c_skeleton;
2012
2013     # Use the positive sense of the flag when testing for -Wno-wombat
2014     # support (gcc will happily accept the -Wno- form of unknown
2015     # warning options).
2016     optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
2017     compile_prog "-Werror $optflag" ""
2018 }
2019
2020 for flag in $gcc_flags; do
2021     if cc_has_warning_flag $flag ; then
2022         QEMU_CFLAGS="$QEMU_CFLAGS $flag"
2023     fi
2024 done
2025
2026 if test "$stack_protector" != "no"; then
2027   cat > $TMPC << EOF
2028 int main(int argc, char *argv[])
2029 {
2030     char arr[64], *p = arr, *c = argv[0];
2031     while (*c) {
2032         *p++ = *c++;
2033     }
2034     return 0;
2035 }
2036 EOF
2037   gcc_flags="-fstack-protector-strong -fstack-protector-all"
2038   sp_on=0
2039   for flag in $gcc_flags; do
2040     # We need to check both a compile and a link, since some compiler
2041     # setups fail only on a .c->.o compile and some only at link time
2042     if compile_object "-Werror $flag" &&
2043        compile_prog "-Werror $flag" ""; then
2044       QEMU_CFLAGS="$QEMU_CFLAGS $flag"
2045       QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
2046       sp_on=1
2047       break
2048     fi
2049   done
2050   if test "$stack_protector" = yes; then
2051     if test $sp_on = 0; then
2052       error_exit "Stack protector not supported"
2053     fi
2054   fi
2055 fi
2056
2057 # Disable -Wmissing-braces on older compilers that warn even for
2058 # the "universal" C zero initializer {0}.
2059 cat > $TMPC << EOF
2060 struct {
2061   int a[2];
2062 } x = {0};
2063 EOF
2064 if compile_object "-Werror" "" ; then
2065   :
2066 else
2067   QEMU_CFLAGS="$QEMU_CFLAGS -Wno-missing-braces"
2068 fi
2069
2070 # Our module code doesn't support Windows
2071 if test "$modules" = "yes" && test "$mingw32" = "yes" ; then
2072   error_exit "Modules are not available for Windows"
2073 fi
2074
2075 # module_upgrades is only reasonable if modules are enabled
2076 if test "$modules" = "no" && test "$module_upgrades" = "yes" ; then
2077   error_exit "Can't enable module-upgrades as Modules are not enabled"
2078 fi
2079
2080 # Static linking is not possible with modules or PIE
2081 if test "$static" = "yes" ; then
2082   if test "$modules" = "yes" ; then
2083     error_exit "static and modules are mutually incompatible"
2084   fi
2085 fi
2086
2087 # Unconditional check for compiler __thread support
2088   cat > $TMPC << EOF
2089 static __thread int tls_var;
2090 int main(void) { return tls_var; }
2091 EOF
2092
2093 if ! compile_prog "-Werror" "" ; then
2094     error_exit "Your compiler does not support the __thread specifier for " \
2095         "Thread-Local Storage (TLS). Please upgrade to a version that does."
2096 fi
2097
2098 cat > $TMPC << EOF
2099
2100 #ifdef __linux__
2101 #  define THREAD __thread
2102 #else
2103 #  define THREAD
2104 #endif
2105 static THREAD int tls_var;
2106 int main(void) { return tls_var; }
2107 EOF
2108
2109 # Check we support --no-pie first; we will need this for building ROMs.
2110 if compile_prog "-Werror -fno-pie" "-no-pie"; then
2111   CFLAGS_NOPIE="-fno-pie"
2112   LDFLAGS_NOPIE="-no-pie"
2113 fi
2114
2115 if test "$static" = "yes"; then
2116   if test "$pie" != "no" && compile_prog "-Werror -fPIE -DPIE" "-static-pie"; then
2117     CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
2118     QEMU_LDFLAGS="-static-pie $QEMU_LDFLAGS"
2119     pie="yes"
2120   elif test "$pie" = "yes"; then
2121     error_exit "-static-pie not available due to missing toolchain support"
2122   else
2123     QEMU_LDFLAGS="-static $QEMU_LDFLAGS"
2124     pie="no"
2125   fi
2126 elif test "$pie" = "no"; then
2127   CONFIGURE_CFLAGS="$CFLAGS_NOPIE $CONFIGURE_CFLAGS"
2128   CONFIGURE_LDFLAGS="$LDFLAGS_NOPIE $CONFIGURE_LDFLAGS"
2129 elif compile_prog "-Werror -fPIE -DPIE" "-pie"; then
2130   CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
2131   CONFIGURE_LDFLAGS="-pie $CONFIGURE_LDFLAGS"
2132   pie="yes"
2133 elif test "$pie" = "yes"; then
2134   error_exit "PIE not available due to missing toolchain support"
2135 else
2136   echo "Disabling PIE due to missing toolchain support"
2137   pie="no"
2138 fi
2139
2140 # Detect support for PT_GNU_RELRO + DT_BIND_NOW.
2141 # The combination is known as "full relro", because .got.plt is read-only too.
2142 if compile_prog "" "-Wl,-z,relro -Wl,-z,now" ; then
2143   QEMU_LDFLAGS="-Wl,-z,relro -Wl,-z,now $QEMU_LDFLAGS"
2144 fi
2145
2146 ##########################################
2147 # __sync_fetch_and_and requires at least -march=i486. Many toolchains
2148 # use i686 as default anyway, but for those that don't, an explicit
2149 # specification is necessary
2150
2151 if test "$cpu" = "i386"; then
2152   cat > $TMPC << EOF
2153 static int sfaa(int *ptr)
2154 {
2155   return __sync_fetch_and_and(ptr, 0);
2156 }
2157
2158 int main(void)
2159 {
2160   int val = 42;
2161   val = __sync_val_compare_and_swap(&val, 0, 1);
2162   sfaa(&val);
2163   return val;
2164 }
2165 EOF
2166   if ! compile_prog "" "" ; then
2167     QEMU_CFLAGS="-march=i486 $QEMU_CFLAGS"
2168   fi
2169 fi
2170
2171 #########################################
2172 # Solaris specific configure tool chain decisions
2173
2174 if test "$solaris" = "yes" ; then
2175   if has ar; then
2176     :
2177   else
2178     if test -f /usr/ccs/bin/ar ; then
2179       error_exit "No path includes ar" \
2180           "Add /usr/ccs/bin to your path and rerun configure"
2181     fi
2182     error_exit "No path includes ar"
2183   fi
2184 fi
2185
2186 if test -z "${target_list+xxx}" ; then
2187     default_targets=yes
2188     for target in $default_target_list; do
2189         target_list="$target_list $target"
2190     done
2191     target_list="${target_list# }"
2192 else
2193     default_targets=no
2194     target_list=$(echo "$target_list" | sed -e 's/,/ /g')
2195     for target in $target_list; do
2196         # Check that we recognised the target name; this allows a more
2197         # friendly error message than if we let it fall through.
2198         case " $default_target_list " in
2199             *" $target "*)
2200                 ;;
2201             *)
2202                 error_exit "Unknown target name '$target'"
2203                 ;;
2204         esac
2205     done
2206 fi
2207
2208 for target in $target_list; do
2209     # if a deprecated target is enabled we note it here
2210     if echo "$deprecated_targets_list" | grep -q "$target"; then
2211         add_to deprecated_features $target
2212     fi
2213 done
2214
2215 # see if system emulation was really requested
2216 case " $target_list " in
2217   *"-softmmu "*) softmmu=yes
2218   ;;
2219   *) softmmu=no
2220   ;;
2221 esac
2222
2223 for target in $target_list; do
2224   case "$target" in
2225     arm-softmmu | aarch64-softmmu | i386-softmmu | x86_64-softmmu)
2226       edk2_blobs="yes"
2227       ;;
2228   esac
2229 done
2230 # The EDK2 binaries are compressed with bzip2
2231 if test "$edk2_blobs" = "yes" && ! has bzip2; then
2232   error_exit "The bzip2 program is required for building QEMU"
2233 fi
2234
2235 feature_not_found() {
2236   feature=$1
2237   remedy=$2
2238
2239   error_exit "User requested feature $feature" \
2240       "configure was not able to find it." \
2241       "$remedy"
2242 }
2243
2244 # ---
2245 # big/little endian test
2246 cat > $TMPC << EOF
2247 short big_endian[] = { 0x4269, 0x4765, 0x4e64, 0x4961, 0x4e00, 0, };
2248 short little_endian[] = { 0x694c, 0x7454, 0x654c, 0x6e45, 0x6944, 0x6e41, 0, };
2249 extern int foo(short *, short *);
2250 int main(int argc, char *argv[]) {
2251     return foo(big_endian, little_endian);
2252 }
2253 EOF
2254
2255 if compile_object ; then
2256     if strings -a $TMPO | grep -q BiGeNdIaN ; then
2257         bigendian="yes"
2258     elif strings -a $TMPO | grep -q LiTtLeEnDiAn ; then
2259         bigendian="no"
2260     else
2261         echo big/little test failed
2262     fi
2263 else
2264     echo big/little test failed
2265 fi
2266
2267 ##########################################
2268 # system tools
2269 if test -z "$want_tools"; then
2270     if test "$softmmu" = "no"; then
2271         want_tools=no
2272     else
2273         want_tools=yes
2274     fi
2275 fi
2276
2277 ##########################################
2278 # cocoa implies not SDL or GTK
2279 # (the cocoa UI code currently assumes it is always the active UI
2280 # and doesn't interact well with other UI frontend code)
2281 if test "$cocoa" = "enabled"; then
2282     if test "$sdl" = "enabled"; then
2283         error_exit "Cocoa and SDL UIs cannot both be enabled at once"
2284     fi
2285     if test "$gtk" = "yes"; then
2286         error_exit "Cocoa and GTK UIs cannot both be enabled at once"
2287     fi
2288     gtk=no
2289     sdl=disabled
2290 fi
2291
2292 # Some versions of Mac OS X incorrectly define SIZE_MAX
2293 cat > $TMPC << EOF
2294 #include <stdint.h>
2295 #include <stdio.h>
2296 int main(int argc, char *argv[]) {
2297     return printf("%zu", SIZE_MAX);
2298 }
2299 EOF
2300 have_broken_size_max=no
2301 if ! compile_object -Werror ; then
2302     have_broken_size_max=yes
2303 fi
2304
2305 ##########################################
2306 # L2TPV3 probe
2307
2308 cat > $TMPC <<EOF
2309 #include <sys/socket.h>
2310 #include <linux/ip.h>
2311 int main(void) { return sizeof(struct mmsghdr); }
2312 EOF
2313 if compile_prog "" "" ; then
2314   l2tpv3=yes
2315 else
2316   l2tpv3=no
2317 fi
2318
2319 if check_include "pty.h" ; then
2320   pty_h=yes
2321 else
2322   pty_h=no
2323 fi
2324
2325 cat > $TMPC <<EOF
2326 #include <sys/mman.h>
2327 int main(int argc, char *argv[]) {
2328     return mlockall(MCL_FUTURE);
2329 }
2330 EOF
2331 if compile_prog "" "" ; then
2332   have_mlockall=yes
2333 else
2334   have_mlockall=no
2335 fi
2336
2337 #########################################
2338 # vhost interdependencies and host support
2339
2340 # vhost backends
2341 test "$vhost_user" = "" && vhost_user=yes
2342 if test "$vhost_user" = "yes" && test "$mingw32" = "yes"; then
2343   error_exit "vhost-user isn't available on win32"
2344 fi
2345 test "$vhost_vdpa" = "" && vhost_vdpa=$linux
2346 if test "$vhost_vdpa" = "yes" && test "$linux" != "yes"; then
2347   error_exit "vhost-vdpa is only available on Linux"
2348 fi
2349 test "$vhost_kernel" = "" && vhost_kernel=$linux
2350 if test "$vhost_kernel" = "yes" && test "$linux" != "yes"; then
2351   error_exit "vhost-kernel is only available on Linux"
2352 fi
2353
2354 # vhost-kernel devices
2355 test "$vhost_scsi" = "" && vhost_scsi=$vhost_kernel
2356 if test "$vhost_scsi" = "yes" && test "$vhost_kernel" != "yes"; then
2357   error_exit "--enable-vhost-scsi requires --enable-vhost-kernel"
2358 fi
2359 test "$vhost_vsock" = "" && vhost_vsock=$vhost_kernel
2360 if test "$vhost_vsock" = "yes" && test "$vhost_kernel" != "yes"; then
2361   error_exit "--enable-vhost-vsock requires --enable-vhost-kernel"
2362 fi
2363
2364 # vhost-user backends
2365 test "$vhost_net_user" = "" && vhost_net_user=$vhost_user
2366 if test "$vhost_net_user" = "yes" && test "$vhost_user" = "no"; then
2367   error_exit "--enable-vhost-net-user requires --enable-vhost-user"
2368 fi
2369 test "$vhost_crypto" = "" && vhost_crypto=$vhost_user
2370 if test "$vhost_crypto" = "yes" && test "$vhost_user" = "no"; then
2371   error_exit "--enable-vhost-crypto requires --enable-vhost-user"
2372 fi
2373 test "$vhost_user_fs" = "" && vhost_user_fs=$vhost_user
2374 if test "$vhost_user_fs" = "yes" && test "$vhost_user" = "no"; then
2375   error_exit "--enable-vhost-user-fs requires --enable-vhost-user"
2376 fi
2377 #vhost-vdpa backends
2378 test "$vhost_net_vdpa" = "" && vhost_net_vdpa=$vhost_vdpa
2379 if test "$vhost_net_vdpa" = "yes" && test "$vhost_vdpa" = "no"; then
2380   error_exit "--enable-vhost-net-vdpa requires --enable-vhost-vdpa"
2381 fi
2382
2383 # OR the vhost-kernel, vhost-vdpa and vhost-user values for simplicity
2384 if test "$vhost_net" = ""; then
2385   test "$vhost_net_user" = "yes" && vhost_net=yes
2386   test "$vhost_net_vdpa" = "yes" && vhost_net=yes
2387   test "$vhost_kernel" = "yes" && vhost_net=yes
2388 fi
2389
2390 ##########################################
2391 # pkg-config probe
2392
2393 if ! has "$pkg_config_exe"; then
2394   error_exit "pkg-config binary '$pkg_config_exe' not found"
2395 fi
2396
2397 ##########################################
2398 # NPTL probe
2399
2400 if test "$linux_user" = "yes"; then
2401   cat > $TMPC <<EOF
2402 #include <sched.h>
2403 #include <linux/futex.h>
2404 int main(void) {
2405 #if !defined(CLONE_SETTLS) || !defined(FUTEX_WAIT)
2406 #error bork
2407 #endif
2408   return 0;
2409 }
2410 EOF
2411   if ! compile_object ; then
2412     feature_not_found "nptl" "Install glibc and linux kernel headers."
2413   fi
2414 fi
2415
2416 ##########################################
2417 # lzo check
2418
2419 if test "$lzo" != "no" ; then
2420     cat > $TMPC << EOF
2421 #include <lzo/lzo1x.h>
2422 int main(void) { lzo_version(); return 0; }
2423 EOF
2424     if compile_prog "" "-llzo2" ; then
2425         lzo_libs="-llzo2"
2426         lzo="yes"
2427     else
2428         if test "$lzo" = "yes"; then
2429             feature_not_found "liblzo2" "Install liblzo2 devel"
2430         fi
2431         lzo="no"
2432     fi
2433 fi
2434
2435 ##########################################
2436 # snappy check
2437
2438 if test "$snappy" != "no" ; then
2439     cat > $TMPC << EOF
2440 #include <snappy-c.h>
2441 int main(void) { snappy_max_compressed_length(4096); return 0; }
2442 EOF
2443     if compile_prog "" "-lsnappy" ; then
2444         snappy_libs='-lsnappy'
2445         snappy="yes"
2446     else
2447         if test "$snappy" = "yes"; then
2448             feature_not_found "libsnappy" "Install libsnappy devel"
2449         fi
2450         snappy="no"
2451     fi
2452 fi
2453
2454 ##########################################
2455 # bzip2 check
2456
2457 if test "$bzip2" != "no" ; then
2458     cat > $TMPC << EOF
2459 #include <bzlib.h>
2460 int main(void) { BZ2_bzlibVersion(); return 0; }
2461 EOF
2462     if compile_prog "" "-lbz2" ; then
2463         bzip2="yes"
2464     else
2465         if test "$bzip2" = "yes"; then
2466             feature_not_found "libbzip2" "Install libbzip2 devel"
2467         fi
2468         bzip2="no"
2469     fi
2470 fi
2471
2472 ##########################################
2473 # lzfse check
2474
2475 if test "$lzfse" != "no" ; then
2476     cat > $TMPC << EOF
2477 #include <lzfse.h>
2478 int main(void) { lzfse_decode_scratch_size(); return 0; }
2479 EOF
2480     if compile_prog "" "-llzfse" ; then
2481         lzfse="yes"
2482     else
2483         if test "$lzfse" = "yes"; then
2484             feature_not_found "lzfse" "Install lzfse devel"
2485         fi
2486         lzfse="no"
2487     fi
2488 fi
2489
2490 ##########################################
2491 # zstd check
2492
2493 if test "$zstd" != "no" ; then
2494     libzstd_minver="1.4.0"
2495     if $pkg_config --atleast-version=$libzstd_minver libzstd ; then
2496         zstd_cflags="$($pkg_config --cflags libzstd)"
2497         zstd_libs="$($pkg_config --libs libzstd)"
2498         zstd="yes"
2499     else
2500         if test "$zstd" = "yes" ; then
2501             feature_not_found "libzstd" "Install libzstd devel"
2502         fi
2503         zstd="no"
2504     fi
2505 fi
2506
2507 ##########################################
2508 # libseccomp check
2509
2510 if test "$seccomp" != "no" ; then
2511     libseccomp_minver="2.3.0"
2512     if $pkg_config --atleast-version=$libseccomp_minver libseccomp ; then
2513         seccomp_cflags="$($pkg_config --cflags libseccomp)"
2514         seccomp_libs="$($pkg_config --libs libseccomp)"
2515         seccomp="yes"
2516     else
2517         if test "$seccomp" = "yes" ; then
2518             feature_not_found "libseccomp" \
2519                  "Install libseccomp devel >= $libseccomp_minver"
2520         fi
2521         seccomp="no"
2522     fi
2523 fi
2524
2525 ##########################################
2526 # xen probe
2527
2528 if test "$xen" != "disabled" ; then
2529   # Check whether Xen library path is specified via --extra-ldflags to avoid
2530   # overriding this setting with pkg-config output. If not, try pkg-config
2531   # to obtain all needed flags.
2532
2533   if ! echo $EXTRA_LDFLAGS | grep tools/libxc > /dev/null && \
2534      $pkg_config --exists xencontrol ; then
2535     xen_ctrl_version="$(printf '%d%02d%02d' \
2536       $($pkg_config --modversion xencontrol | sed 's/\./ /g') )"
2537     xen=enabled
2538     xen_pc="xencontrol xenstore xenguest xenforeignmemory xengnttab"
2539     xen_pc="$xen_pc xenevtchn xendevicemodel"
2540     if $pkg_config --exists xentoolcore; then
2541       xen_pc="$xen_pc xentoolcore"
2542     fi
2543     xen_cflags="$($pkg_config --cflags $xen_pc)"
2544     xen_libs="$($pkg_config --libs $xen_pc)"
2545   else
2546
2547     xen_libs="-lxenstore -lxenctrl -lxenguest"
2548     xen_stable_libs="-lxenforeignmemory -lxengnttab -lxenevtchn"
2549
2550     # First we test whether Xen headers and libraries are available.
2551     # If no, we are done and there is no Xen support.
2552     # If yes, more tests are run to detect the Xen version.
2553
2554     # Xen (any)
2555     cat > $TMPC <<EOF
2556 #include <xenctrl.h>
2557 int main(void) {
2558   return 0;
2559 }
2560 EOF
2561     if ! compile_prog "" "$xen_libs" ; then
2562       # Xen not found
2563       if test "$xen" = "enabled" ; then
2564         feature_not_found "xen" "Install xen devel"
2565       fi
2566       xen=disabled
2567
2568     # Xen unstable
2569     elif
2570         cat > $TMPC <<EOF &&
2571 #undef XC_WANT_COMPAT_DEVICEMODEL_API
2572 #define __XEN_TOOLS__
2573 #include <xendevicemodel.h>
2574 #include <xenforeignmemory.h>
2575 int main(void) {
2576   xendevicemodel_handle *xd;
2577   xenforeignmemory_handle *xfmem;
2578
2579   xd = xendevicemodel_open(0, 0);
2580   xendevicemodel_pin_memory_cacheattr(xd, 0, 0, 0, 0);
2581
2582   xfmem = xenforeignmemory_open(0, 0);
2583   xenforeignmemory_map_resource(xfmem, 0, 0, 0, 0, 0, NULL, 0, 0);
2584
2585   return 0;
2586 }
2587 EOF
2588         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs -lxentoolcore"
2589       then
2590       xen_stable_libs="-lxendevicemodel $xen_stable_libs -lxentoolcore"
2591       xen_ctrl_version=41100
2592       xen=enabled
2593     elif
2594         cat > $TMPC <<EOF &&
2595 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
2596 #include <xenforeignmemory.h>
2597 #include <xentoolcore.h>
2598 int main(void) {
2599   xenforeignmemory_handle *xfmem;
2600
2601   xfmem = xenforeignmemory_open(0, 0);
2602   xenforeignmemory_map2(xfmem, 0, 0, 0, 0, 0, 0, 0);
2603   xentoolcore_restrict_all(0);
2604
2605   return 0;
2606 }
2607 EOF
2608         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs -lxentoolcore"
2609       then
2610       xen_stable_libs="-lxendevicemodel $xen_stable_libs -lxentoolcore"
2611       xen_ctrl_version=41000
2612       xen=enabled
2613     elif
2614         cat > $TMPC <<EOF &&
2615 #undef XC_WANT_COMPAT_DEVICEMODEL_API
2616 #define __XEN_TOOLS__
2617 #include <xendevicemodel.h>
2618 int main(void) {
2619   xendevicemodel_handle *xd;
2620
2621   xd = xendevicemodel_open(0, 0);
2622   xendevicemodel_close(xd);
2623
2624   return 0;
2625 }
2626 EOF
2627         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs"
2628       then
2629       xen_stable_libs="-lxendevicemodel $xen_stable_libs"
2630       xen_ctrl_version=40900
2631       xen=enabled
2632     elif
2633         cat > $TMPC <<EOF &&
2634 /*
2635  * If we have stable libs the we don't want the libxc compat
2636  * layers, regardless of what CFLAGS we may have been given.
2637  *
2638  * Also, check if xengnttab_grant_copy_segment_t is defined and
2639  * grant copy operation is implemented.
2640  */
2641 #undef XC_WANT_COMPAT_EVTCHN_API
2642 #undef XC_WANT_COMPAT_GNTTAB_API
2643 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
2644 #include <xenctrl.h>
2645 #include <xenstore.h>
2646 #include <xenevtchn.h>
2647 #include <xengnttab.h>
2648 #include <xenforeignmemory.h>
2649 #include <stdint.h>
2650 #include <xen/hvm/hvm_info_table.h>
2651 #if !defined(HVM_MAX_VCPUS)
2652 # error HVM_MAX_VCPUS not defined
2653 #endif
2654 int main(void) {
2655   xc_interface *xc = NULL;
2656   xenforeignmemory_handle *xfmem;
2657   xenevtchn_handle *xe;
2658   xengnttab_handle *xg;
2659   xengnttab_grant_copy_segment_t* seg = NULL;
2660
2661   xs_daemon_open();
2662
2663   xc = xc_interface_open(0, 0, 0);
2664   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2665   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2666   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2667   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
2668
2669   xfmem = xenforeignmemory_open(0, 0);
2670   xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);
2671
2672   xe = xenevtchn_open(0, 0);
2673   xenevtchn_fd(xe);
2674
2675   xg = xengnttab_open(0, 0);
2676   xengnttab_grant_copy(xg, 0, seg);
2677
2678   return 0;
2679 }
2680 EOF
2681         compile_prog "" "$xen_libs $xen_stable_libs"
2682       then
2683       xen_ctrl_version=40800
2684       xen=enabled
2685     elif
2686         cat > $TMPC <<EOF &&
2687 /*
2688  * If we have stable libs the we don't want the libxc compat
2689  * layers, regardless of what CFLAGS we may have been given.
2690  */
2691 #undef XC_WANT_COMPAT_EVTCHN_API
2692 #undef XC_WANT_COMPAT_GNTTAB_API
2693 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
2694 #include <xenctrl.h>
2695 #include <xenstore.h>
2696 #include <xenevtchn.h>
2697 #include <xengnttab.h>
2698 #include <xenforeignmemory.h>
2699 #include <stdint.h>
2700 #include <xen/hvm/hvm_info_table.h>
2701 #if !defined(HVM_MAX_VCPUS)
2702 # error HVM_MAX_VCPUS not defined
2703 #endif
2704 int main(void) {
2705   xc_interface *xc = NULL;
2706   xenforeignmemory_handle *xfmem;
2707   xenevtchn_handle *xe;
2708   xengnttab_handle *xg;
2709
2710   xs_daemon_open();
2711
2712   xc = xc_interface_open(0, 0, 0);
2713   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2714   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2715   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2716   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
2717
2718   xfmem = xenforeignmemory_open(0, 0);
2719   xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);
2720
2721   xe = xenevtchn_open(0, 0);
2722   xenevtchn_fd(xe);
2723
2724   xg = xengnttab_open(0, 0);
2725   xengnttab_map_grant_ref(xg, 0, 0, 0);
2726
2727   return 0;
2728 }
2729 EOF
2730         compile_prog "" "$xen_libs $xen_stable_libs"
2731       then
2732       xen_ctrl_version=40701
2733       xen=enabled
2734
2735     # Xen 4.6
2736     elif
2737         cat > $TMPC <<EOF &&
2738 #include <xenctrl.h>
2739 #include <xenstore.h>
2740 #include <stdint.h>
2741 #include <xen/hvm/hvm_info_table.h>
2742 #if !defined(HVM_MAX_VCPUS)
2743 # error HVM_MAX_VCPUS not defined
2744 #endif
2745 int main(void) {
2746   xc_interface *xc;
2747   xs_daemon_open();
2748   xc = xc_interface_open(0, 0, 0);
2749   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2750   xc_gnttab_open(NULL, 0);
2751   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2752   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2753   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
2754   xc_reserved_device_memory_map(xc, 0, 0, 0, 0, NULL, 0);
2755   return 0;
2756 }
2757 EOF
2758         compile_prog "" "$xen_libs"
2759       then
2760       xen_ctrl_version=40600
2761       xen=enabled
2762
2763     # Xen 4.5
2764     elif
2765         cat > $TMPC <<EOF &&
2766 #include <xenctrl.h>
2767 #include <xenstore.h>
2768 #include <stdint.h>
2769 #include <xen/hvm/hvm_info_table.h>
2770 #if !defined(HVM_MAX_VCPUS)
2771 # error HVM_MAX_VCPUS not defined
2772 #endif
2773 int main(void) {
2774   xc_interface *xc;
2775   xs_daemon_open();
2776   xc = xc_interface_open(0, 0, 0);
2777   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2778   xc_gnttab_open(NULL, 0);
2779   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2780   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2781   xc_hvm_create_ioreq_server(xc, 0, 0, NULL);
2782   return 0;
2783 }
2784 EOF
2785         compile_prog "" "$xen_libs"
2786       then
2787       xen_ctrl_version=40500
2788       xen=enabled
2789
2790     elif
2791         cat > $TMPC <<EOF &&
2792 #include <xenctrl.h>
2793 #include <xenstore.h>
2794 #include <stdint.h>
2795 #include <xen/hvm/hvm_info_table.h>
2796 #if !defined(HVM_MAX_VCPUS)
2797 # error HVM_MAX_VCPUS not defined
2798 #endif
2799 int main(void) {
2800   xc_interface *xc;
2801   xs_daemon_open();
2802   xc = xc_interface_open(0, 0, 0);
2803   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2804   xc_gnttab_open(NULL, 0);
2805   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2806   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2807   return 0;
2808 }
2809 EOF
2810         compile_prog "" "$xen_libs"
2811       then
2812       xen_ctrl_version=40200
2813       xen=enabled
2814
2815     else
2816       if test "$xen" = "enabled" ; then
2817         feature_not_found "xen (unsupported version)" \
2818                           "Install a supported xen (xen 4.2 or newer)"
2819       fi
2820       xen=disabled
2821     fi
2822
2823     if test "$xen" = enabled; then
2824       if test $xen_ctrl_version -ge 40701  ; then
2825         xen_libs="$xen_libs $xen_stable_libs "
2826       fi
2827     fi
2828   fi
2829 fi
2830
2831 if test "$xen_pci_passthrough" != "disabled"; then
2832   if test "$xen" = "enabled" && test "$linux" = "yes"; then
2833     xen_pci_passthrough=enabled
2834   else
2835     if test "$xen_pci_passthrough" = "enabled"; then
2836       error_exit "User requested feature Xen PCI Passthrough" \
2837           " but this feature requires /sys from Linux"
2838     fi
2839     xen_pci_passthrough=disabled
2840   fi
2841 fi
2842
2843 ##########################################
2844 # gettext probe
2845 if test "$gettext" != "false" ; then
2846   if has xgettext; then
2847     gettext=true
2848   else
2849     if test "$gettext" = "true" ; then
2850       feature_not_found "gettext" "Install xgettext binary"
2851     fi
2852     gettext=false
2853   fi
2854 fi
2855
2856 ##########################################
2857 # X11 probe
2858 if $pkg_config --exists "x11"; then
2859     have_x11=yes
2860     x11_cflags=$($pkg_config --cflags x11)
2861     x11_libs=$($pkg_config --libs x11)
2862 fi
2863
2864 ##########################################
2865 # GTK probe
2866
2867 if test "$gtk" != "no"; then
2868     gtkpackage="gtk+-3.0"
2869     gtkx11package="gtk+-x11-3.0"
2870     gtkversion="3.22.0"
2871     if $pkg_config --exists "$gtkpackage >= $gtkversion"; then
2872         gtk_cflags=$($pkg_config --cflags $gtkpackage)
2873         gtk_libs=$($pkg_config --libs $gtkpackage)
2874         gtk_version=$($pkg_config --modversion $gtkpackage)
2875         if $pkg_config --exists "$gtkx11package >= $gtkversion"; then
2876             need_x11=yes
2877             gtk_cflags="$gtk_cflags $x11_cflags"
2878             gtk_libs="$gtk_libs $x11_libs"
2879         fi
2880         gtk="yes"
2881     elif test "$gtk" = "yes"; then
2882         feature_not_found "gtk" "Install gtk3-devel"
2883     else
2884         gtk="no"
2885     fi
2886 fi
2887
2888
2889 ##########################################
2890 # GNUTLS probe
2891
2892 if test "$gnutls" != "no"; then
2893     pass="no"
2894     if $pkg_config --exists "gnutls >= 3.1.18"; then
2895         gnutls_cflags=$($pkg_config --cflags gnutls)
2896         gnutls_libs=$($pkg_config --libs gnutls)
2897         # Packaging for the static libraries is not always correct.
2898         # At least ubuntu 18.04 ships only shared libraries.
2899         write_c_skeleton
2900         if compile_prog "" "$gnutls_libs" ; then
2901             pass="yes"
2902         fi
2903     fi
2904     if test "$pass" = "no" && test "$gnutls" = "yes"; then
2905         feature_not_found "gnutls" "Install gnutls devel >= 3.1.18"
2906     else
2907         gnutls="$pass"
2908     fi
2909 fi
2910
2911
2912 # If user didn't give a --disable/enable-gcrypt flag,
2913 # then mark as disabled if user requested nettle
2914 # explicitly
2915 if test -z "$gcrypt"
2916 then
2917     if test "$nettle" = "yes"
2918     then
2919         gcrypt="no"
2920     fi
2921 fi
2922
2923 # If user didn't give a --disable/enable-nettle flag,
2924 # then mark as disabled if user requested gcrypt
2925 # explicitly
2926 if test -z "$nettle"
2927 then
2928     if test "$gcrypt" = "yes"
2929     then
2930         nettle="no"
2931     fi
2932 fi
2933
2934 has_libgcrypt() {
2935     if ! has "libgcrypt-config"
2936     then
2937         return 1
2938     fi
2939
2940     if test -n "$cross_prefix"
2941     then
2942         host=$(libgcrypt-config --host)
2943         if test "$host-" != $cross_prefix
2944         then
2945             return 1
2946         fi
2947     fi
2948
2949     maj=`libgcrypt-config --version | awk -F . '{print $1}'`
2950     min=`libgcrypt-config --version | awk -F . '{print $2}'`
2951
2952     if test $maj != 1 || test $min -lt 5
2953     then
2954        return 1
2955     fi
2956
2957     return 0
2958 }
2959
2960
2961 if test "$nettle" != "no"; then
2962     pass="no"
2963     if $pkg_config --exists "nettle >= 2.7.1"; then
2964         nettle_cflags=$($pkg_config --cflags nettle)
2965         nettle_libs=$($pkg_config --libs nettle)
2966         nettle_version=$($pkg_config --modversion nettle)
2967         # Link test to make sure the given libraries work (e.g for static).
2968         write_c_skeleton
2969         if compile_prog "" "$nettle_libs" ; then
2970             if test -z "$gcrypt"; then
2971                gcrypt="no"
2972             fi
2973             pass="yes"
2974         fi
2975     fi
2976     if test "$pass" = "yes"
2977     then
2978         cat > $TMPC << EOF
2979 #include <nettle/xts.h>
2980 int main(void) {
2981   return 0;
2982 }
2983 EOF
2984         if compile_prog "$nettle_cflags" "$nettle_libs" ; then
2985             nettle_xts=yes
2986             qemu_private_xts=no
2987         fi
2988     fi
2989     if test "$pass" = "no" && test "$nettle" = "yes"; then
2990         feature_not_found "nettle" "Install nettle devel >= 2.7.1"
2991     else
2992         nettle="$pass"
2993     fi
2994 fi
2995
2996 if test "$gcrypt" != "no"; then
2997     pass="no"
2998     if has_libgcrypt; then
2999         gcrypt_cflags=$(libgcrypt-config --cflags)
3000         gcrypt_libs=$(libgcrypt-config --libs)
3001         # Debian has removed -lgpg-error from libgcrypt-config
3002         # as it "spreads unnecessary dependencies" which in
3003         # turn breaks static builds...
3004         if test "$static" = "yes"
3005         then
3006             gcrypt_libs="$gcrypt_libs -lgpg-error"
3007         fi
3008
3009         # Link test to make sure the given libraries work (e.g for static).
3010         write_c_skeleton
3011         if compile_prog "" "$gcrypt_libs" ; then
3012             pass="yes"
3013         fi
3014     fi
3015     if test "$pass" = "yes"; then
3016         gcrypt="yes"
3017         cat > $TMPC << EOF
3018 #include <gcrypt.h>
3019 int main(void) {
3020   gcry_mac_hd_t handle;
3021   gcry_mac_open(&handle, GCRY_MAC_HMAC_MD5,
3022                 GCRY_MAC_FLAG_SECURE, NULL);
3023   return 0;
3024 }
3025 EOF
3026         if compile_prog "$gcrypt_cflags" "$gcrypt_libs" ; then
3027             gcrypt_hmac=yes
3028         fi
3029         cat > $TMPC << EOF
3030 #include <gcrypt.h>
3031 int main(void) {
3032   gcry_cipher_hd_t handle;
3033   gcry_cipher_open(&handle, GCRY_CIPHER_AES, GCRY_CIPHER_MODE_XTS, 0);
3034   return 0;
3035 }
3036 EOF
3037         if compile_prog "$gcrypt_cflags" "$gcrypt_libs" ; then
3038             gcrypt_xts=yes
3039             qemu_private_xts=no
3040         fi
3041     elif test "$gcrypt" = "yes"; then
3042         feature_not_found "gcrypt" "Install gcrypt devel >= 1.5.0"
3043     else
3044         gcrypt="no"
3045     fi
3046 fi
3047
3048
3049 if test "$gcrypt" = "yes" && test "$nettle" = "yes"
3050 then
3051     error_exit "Only one of gcrypt & nettle can be enabled"
3052 fi
3053
3054 ##########################################
3055 # libtasn1 - only for the TLS creds/session test suite
3056
3057 tasn1=yes
3058 tasn1_cflags=""
3059 tasn1_libs=""
3060 if $pkg_config --exists "libtasn1"; then
3061     tasn1_cflags=$($pkg_config --cflags libtasn1)
3062     tasn1_libs=$($pkg_config --libs libtasn1)
3063 else
3064     tasn1=no
3065 fi
3066
3067
3068 ##########################################
3069 # PAM probe
3070
3071 if test "$auth_pam" != "no"; then
3072     cat > $TMPC <<EOF
3073 #include <security/pam_appl.h>
3074 #include <stdio.h>
3075 int main(void) {
3076    const char *service_name = "qemu";
3077    const char *user = "frank";
3078    const struct pam_conv pam_conv = { 0 };
3079    pam_handle_t *pamh = NULL;
3080    pam_start(service_name, user, &pam_conv, &pamh);
3081    return 0;
3082 }
3083 EOF
3084     if compile_prog "" "-lpam" ; then
3085         auth_pam=yes
3086     else
3087         if test "$auth_pam" = "yes"; then
3088             feature_not_found "PAM" "Install PAM development package"
3089         else
3090             auth_pam=no
3091         fi
3092     fi
3093 fi
3094
3095 ##########################################
3096 # getifaddrs (for tests/test-io-channel-socket )
3097
3098 have_ifaddrs_h=yes
3099 if ! check_include "ifaddrs.h" ; then
3100   have_ifaddrs_h=no
3101 fi
3102
3103 #########################################
3104 # libdrm check
3105 have_drm_h=no
3106 if check_include "libdrm/drm.h" ; then
3107     have_drm_h=yes
3108 fi
3109
3110 #########################################
3111 # sys/signal.h check
3112 have_sys_signal_h=no
3113 if check_include "sys/signal.h" ; then
3114   have_sys_signal_h=yes
3115 fi
3116
3117 ##########################################
3118 # VTE probe
3119
3120 if test "$vte" != "no"; then
3121     vteminversion="0.32.0"
3122     if $pkg_config --exists "vte-2.91"; then
3123       vtepackage="vte-2.91"
3124     else
3125       vtepackage="vte-2.90"
3126     fi
3127     if $pkg_config --exists "$vtepackage >= $vteminversion"; then
3128         vte_cflags=$($pkg_config --cflags $vtepackage)
3129         vte_libs=$($pkg_config --libs $vtepackage)
3130         vteversion=$($pkg_config --modversion $vtepackage)
3131         vte="yes"
3132     elif test "$vte" = "yes"; then
3133         feature_not_found "vte" "Install libvte-2.90/2.91 devel"
3134     else
3135         vte="no"
3136     fi
3137 fi
3138
3139 ##########################################
3140 # RDMA needs OpenFabrics libraries
3141 if test "$rdma" != "no" ; then
3142   cat > $TMPC <<EOF
3143 #include <rdma/rdma_cma.h>
3144 int main(void) { return 0; }
3145 EOF
3146   rdma_libs="-lrdmacm -libverbs -libumad"
3147   if compile_prog "" "$rdma_libs" ; then
3148     rdma="yes"
3149   else
3150     if test "$rdma" = "yes" ; then
3151         error_exit \
3152             " OpenFabrics librdmacm/libibverbs/libibumad not present." \
3153             " Your options:" \
3154             "  (1) Fast: Install infiniband packages (devel) from your distro." \
3155             "  (2) Cleanest: Install libraries from www.openfabrics.org" \
3156             "  (3) Also: Install softiwarp if you don't have RDMA hardware"
3157     fi
3158     rdma="no"
3159   fi
3160 fi
3161
3162 ##########################################
3163 # PVRDMA detection
3164
3165 cat > $TMPC <<EOF &&
3166 #include <sys/mman.h>
3167
3168 int
3169 main(void)
3170 {
3171     char buf = 0;
3172     void *addr = &buf;
3173     addr = mremap(addr, 0, 1, MREMAP_MAYMOVE | MREMAP_FIXED);
3174
3175     return 0;
3176 }
3177 EOF
3178
3179 if test "$rdma" = "yes" ; then
3180     case "$pvrdma" in
3181     "")
3182         if compile_prog "" ""; then
3183             pvrdma="yes"
3184         else
3185             pvrdma="no"
3186         fi
3187         ;;
3188     "yes")
3189         if ! compile_prog "" ""; then
3190             error_exit "PVRDMA is not supported since mremap is not implemented"
3191         fi
3192         pvrdma="yes"
3193         ;;
3194     "no")
3195         pvrdma="no"
3196         ;;
3197     esac
3198 else
3199     if test "$pvrdma" = "yes" ; then
3200         error_exit "PVRDMA requires rdma suppport"
3201     fi
3202     pvrdma="no"
3203 fi
3204
3205 # Let's see if enhanced reg_mr is supported
3206 if test "$pvrdma" = "yes" ; then
3207
3208 cat > $TMPC <<EOF &&
3209 #include <infiniband/verbs.h>
3210
3211 int
3212 main(void)
3213 {
3214     struct ibv_mr *mr;
3215     struct ibv_pd *pd = NULL;
3216     size_t length = 10;
3217     uint64_t iova = 0;
3218     int access = 0;
3219     void *addr = NULL;
3220
3221     mr = ibv_reg_mr_iova(pd, addr, length, iova, access);
3222
3223     ibv_dereg_mr(mr);
3224
3225     return 0;
3226 }
3227 EOF
3228     if ! compile_prog "" "-libverbs"; then
3229         QEMU_CFLAGS="$QEMU_CFLAGS -DLEGACY_RDMA_REG_MR"
3230     fi
3231 fi
3232
3233 ##########################################
3234 # xfsctl() probe, used for file-posix.c
3235 if test "$xfs" != "no" ; then
3236   cat > $TMPC << EOF
3237 #include <stddef.h>  /* NULL */
3238 #include <xfs/xfs.h>
3239 int main(void)
3240 {
3241     xfsctl(NULL, 0, 0, NULL);
3242     return 0;
3243 }
3244 EOF
3245   if compile_prog "" "" ; then
3246     xfs="yes"
3247   else
3248     if test "$xfs" = "yes" ; then
3249       feature_not_found "xfs" "Install xfsprogs/xfslibs devel"
3250     fi
3251     xfs=no
3252   fi
3253 fi
3254
3255 ##########################################
3256 # vde libraries probe
3257 if test "$vde" != "no" ; then
3258   vde_libs="-lvdeplug"
3259   cat > $TMPC << EOF
3260 #include <libvdeplug.h>
3261 int main(void)
3262 {
3263     struct vde_open_args a = {0, 0, 0};
3264     char s[] = "";
3265     vde_open(s, s, &a);
3266     return 0;
3267 }
3268 EOF
3269   if compile_prog "" "$vde_libs" ; then
3270     vde=yes
3271   else
3272     if test "$vde" = "yes" ; then
3273       feature_not_found "vde" "Install vde (Virtual Distributed Ethernet) devel"
3274     fi
3275     vde=no
3276   fi
3277 fi
3278
3279 ##########################################
3280 # netmap support probe
3281 # Apart from looking for netmap headers, we make sure that the host API version
3282 # supports the netmap backend (>=11). The upper bound (15) is meant to simulate
3283 # a minor/major version number. Minor new features will be marked with values up
3284 # to 15, and if something happens that requires a change to the backend we will
3285 # move above 15, submit the backend fixes and modify this two bounds.
3286 if test "$netmap" != "no" ; then
3287   cat > $TMPC << EOF
3288 #include <inttypes.h>
3289 #include <net/if.h>
3290 #include <net/netmap.h>
3291 #include <net/netmap_user.h>
3292 #if (NETMAP_API < 11) || (NETMAP_API > 15)
3293 #error
3294 #endif
3295 int main(void) { return 0; }
3296 EOF
3297   if compile_prog "" "" ; then
3298     netmap=yes
3299   else
3300     if test "$netmap" = "yes" ; then
3301       feature_not_found "netmap"
3302     fi
3303     netmap=no
3304   fi
3305 fi
3306
3307 ##########################################
3308 # libcap-ng library probe
3309 if test "$cap_ng" != "no" ; then
3310   cap_libs="-lcap-ng"
3311   cat > $TMPC << EOF
3312 #include <cap-ng.h>
3313 int main(void)
3314 {
3315     capng_capability_to_name(CAPNG_EFFECTIVE);
3316     return 0;
3317 }
3318 EOF
3319   if compile_prog "" "$cap_libs" ; then
3320     cap_ng=yes
3321   else
3322     if test "$cap_ng" = "yes" ; then
3323       feature_not_found "cap_ng" "Install libcap-ng devel"
3324     fi
3325     cap_ng=no
3326   fi
3327 fi
3328
3329 ##########################################
3330 # Sound support libraries probe
3331
3332 audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/,/ /g')
3333 for drv in $audio_drv_list; do
3334     case $drv in
3335     alsa | try-alsa)
3336     if $pkg_config alsa --exists; then
3337         alsa_libs=$($pkg_config alsa --libs)
3338         alsa_cflags=$($pkg_config alsa --cflags)
3339         alsa=yes
3340         if test "$drv" = "try-alsa"; then
3341             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-alsa/alsa/')
3342         fi
3343     else
3344         if test "$drv" = "try-alsa"; then
3345             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-alsa//')
3346         else
3347             error_exit "$drv check failed" \
3348                 "Make sure to have the $drv libs and headers installed."
3349         fi
3350     fi
3351     ;;
3352
3353     pa | try-pa)
3354     if $pkg_config libpulse --exists; then
3355         libpulse=yes
3356         pulse_libs=$($pkg_config libpulse --libs)
3357         pulse_cflags=$($pkg_config libpulse --cflags)
3358         if test "$drv" = "try-pa"; then
3359             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-pa/pa/')
3360         fi
3361     else
3362         if test "$drv" = "try-pa"; then
3363             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-pa//')
3364         else
3365             error_exit "$drv check failed" \
3366                 "Make sure to have the $drv libs and headers installed."
3367         fi
3368     fi
3369     ;;
3370
3371     sdl)
3372     if test "$sdl" = "no"; then
3373         error_exit "sdl not found or disabled, can not use sdl audio driver"
3374     fi
3375     ;;
3376
3377     try-sdl)
3378     if test "$sdl" = "no"; then
3379         audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-sdl//')
3380     else
3381         audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-sdl/sdl/')
3382     fi
3383     ;;
3384
3385     coreaudio)
3386       coreaudio_libs="-framework CoreAudio"
3387     ;;
3388
3389     dsound)
3390       dsound_libs="-lole32 -ldxguid"
3391       audio_win_int="yes"
3392     ;;
3393
3394     oss)
3395       oss_libs="$oss_lib"
3396     ;;
3397
3398     jack | try-jack)
3399     if $pkg_config jack --exists; then
3400         libjack=yes
3401         jack_libs=$($pkg_config jack --libs)
3402         if test "$drv" = "try-jack"; then
3403             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-jack/jack/')
3404         fi
3405     else
3406         if test "$drv" = "try-jack"; then
3407             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-jack//')
3408         else
3409             error_exit "$drv check failed" \
3410                 "Make sure to have the $drv libs and headers installed."
3411         fi
3412     fi
3413     ;;
3414
3415     *)
3416     echo "$audio_possible_drivers" | grep -q "\<$drv\>" || {
3417         error_exit "Unknown driver '$drv' selected" \
3418             "Possible drivers are: $audio_possible_drivers"
3419     }
3420     ;;
3421     esac
3422 done
3423
3424 ##########################################
3425 # BrlAPI probe
3426
3427 if test "$brlapi" != "no" ; then
3428   brlapi_libs="-lbrlapi"
3429   cat > $TMPC << EOF
3430 #include <brlapi.h>
3431 #include <stddef.h>
3432 int main( void ) { return brlapi__openConnection (NULL, NULL, NULL); }
3433 EOF
3434   if compile_prog "" "$brlapi_libs" ; then
3435     brlapi=yes
3436   else
3437     if test "$brlapi" = "yes" ; then
3438       feature_not_found "brlapi" "Install brlapi devel"
3439     fi
3440     brlapi=no
3441   fi
3442 fi
3443
3444 ##########################################
3445 # curl probe
3446 if test "$curl" != "no" ; then
3447   if $pkg_config libcurl --exists; then
3448     curlconfig="$pkg_config libcurl"
3449   else
3450     curlconfig=curl-config
3451   fi
3452   cat > $TMPC << EOF
3453 #include <curl/curl.h>
3454 int main(void) { curl_easy_init(); curl_multi_setopt(0, 0, 0); return 0; }
3455 EOF
3456   curl_cflags=$($curlconfig --cflags 2>/dev/null)
3457   curl_libs=$($curlconfig --libs 2>/dev/null)
3458   if compile_prog "$curl_cflags" "$curl_libs" ; then
3459     curl=yes
3460   else
3461     if test "$curl" = "yes" ; then
3462       feature_not_found "curl" "Install libcurl devel"
3463     fi
3464     curl=no
3465   fi
3466 fi # test "$curl"
3467
3468 ##########################################
3469 # glib support probe
3470
3471 glib_req_ver=2.48
3472 glib_modules=gthread-2.0
3473 if test "$modules" = yes; then
3474     glib_modules="$glib_modules gmodule-export-2.0"
3475 fi
3476 if test "$plugins" = yes; then
3477     glib_modules="$glib_modules gmodule-2.0"
3478 fi
3479
3480 for i in $glib_modules; do
3481     if $pkg_config --atleast-version=$glib_req_ver $i; then
3482         glib_cflags=$($pkg_config --cflags $i)
3483         glib_libs=$($pkg_config --libs $i)
3484     else
3485         error_exit "glib-$glib_req_ver $i is required to compile QEMU"
3486     fi
3487 done
3488
3489 # This workaround is required due to a bug in pkg-config file for glib as it
3490 # doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
3491
3492 if test "$static" = yes && test "$mingw32" = yes; then
3493     glib_cflags="-DGLIB_STATIC_COMPILATION $glib_cflags"
3494 fi
3495
3496 if $pkg_config --atleast-version=$glib_req_ver gio-2.0; then
3497     gio=yes
3498     gio_cflags=$($pkg_config --cflags gio-2.0)
3499     gio_libs=$($pkg_config --libs gio-2.0)
3500     gdbus_codegen=$($pkg_config --variable=gdbus_codegen gio-2.0)
3501     if [ ! -x "$gdbus_codegen" ]; then
3502         gdbus_codegen=
3503     fi
3504 else
3505     gio=no
3506 fi
3507
3508 if $pkg_config --atleast-version=$glib_req_ver gio-unix-2.0; then
3509     gio_cflags="$gio_cflags $($pkg_config --cflags gio-unix-2.0)"
3510     gio_libs="$gio_libs $($pkg_config --libs gio-unix-2.0)"
3511 fi
3512
3513 # Sanity check that the current size_t matches the
3514 # size that glib thinks it should be. This catches
3515 # problems on multi-arch where people try to build
3516 # 32-bit QEMU while pointing at 64-bit glib headers
3517 cat > $TMPC <<EOF
3518 #include <glib.h>
3519 #include <unistd.h>
3520
3521 #define QEMU_BUILD_BUG_ON(x) \
3522   typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
3523
3524 int main(void) {
3525    QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
3526    return 0;
3527 }
3528 EOF
3529
3530 if ! compile_prog "$glib_cflags" "$glib_libs" ; then
3531     error_exit "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T."\
3532                "You probably need to set PKG_CONFIG_LIBDIR"\
3533                "to point to the right pkg-config files for your"\
3534                "build target"
3535 fi
3536
3537 # Silence clang 3.5.0 warnings about glib attribute __alloc_size__ usage
3538 cat > $TMPC << EOF
3539 #include <glib.h>
3540 int main(void) { return 0; }
3541 EOF
3542 if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
3543     if cc_has_warning_flag "-Wno-unknown-attributes"; then
3544         glib_cflags="-Wno-unknown-attributes $glib_cflags"
3545         CONFIGURE_CFLAGS="-Wno-unknown-attributes $CONFIGURE_CFLAGS"
3546     fi
3547 fi
3548
3549 # Silence clang warnings triggered by glib < 2.57.2
3550 cat > $TMPC << EOF
3551 #include <glib.h>
3552 typedef struct Foo {
3553     int i;
3554 } Foo;
3555 static void foo_free(Foo *f)
3556 {
3557     g_free(f);
3558 }
3559 G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free);
3560 int main(void) { return 0; }
3561 EOF
3562 if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
3563     if cc_has_warning_flag "-Wno-unused-function"; then
3564         glib_cflags="$glib_cflags -Wno-unused-function"
3565         CONFIGURE_CFLAGS="$CONFIGURE_CFLAGS -Wno-unused-function"
3566     fi
3567 fi
3568
3569 ##########################################
3570 # SHA command probe for modules
3571 if test "$modules" = yes; then
3572     shacmd_probe="sha1sum sha1 shasum"
3573     for c in $shacmd_probe; do
3574         if has $c; then
3575             shacmd="$c"
3576             break
3577         fi
3578     done
3579     if test "$shacmd" = ""; then
3580         error_exit "one of the checksum commands is required to enable modules: $shacmd_probe"
3581     fi
3582 fi
3583
3584 ##########################################
3585 # pthread probe
3586 PTHREADLIBS_LIST="-pthread -lpthread -lpthreadGC2"
3587
3588 pthread=no
3589 cat > $TMPC << EOF
3590 #include <pthread.h>
3591 static void *f(void *p) { return NULL; }
3592 int main(void) {
3593   pthread_t thread;
3594   pthread_create(&thread, 0, f, 0);
3595   return 0;
3596 }
3597 EOF
3598 if compile_prog "" "" ; then
3599   pthread=yes
3600 else
3601   for pthread_lib in $PTHREADLIBS_LIST; do
3602     if compile_prog "" "$pthread_lib" ; then
3603       pthread=yes
3604       found=no
3605       for lib_entry in $LIBS; do
3606         if test "$lib_entry" = "$pthread_lib"; then
3607           found=yes
3608           break
3609         fi
3610       done
3611       if test "$found" = "no"; then
3612         LIBS="$pthread_lib $LIBS"
3613       fi
3614       PTHREAD_LIB="$pthread_lib"
3615       break
3616     fi
3617   done
3618 fi
3619
3620 if test "$mingw32" != yes && test "$pthread" = no; then
3621   error_exit "pthread check failed" \
3622       "Make sure to have the pthread libs and headers installed."
3623 fi
3624
3625 # check for pthread_setname_np with thread id
3626 pthread_setname_np_w_tid=no
3627 cat > $TMPC << EOF
3628 #include <pthread.h>
3629
3630 static void *f(void *p) { return NULL; }
3631 int main(void)
3632 {
3633     pthread_t thread;
3634     pthread_create(&thread, 0, f, 0);
3635     pthread_setname_np(thread, "QEMU");
3636     return 0;
3637 }
3638 EOF
3639 if compile_prog "" "$pthread_lib" ; then
3640   pthread_setname_np_w_tid=yes
3641 fi
3642
3643 # check for pthread_setname_np without thread id
3644 pthread_setname_np_wo_tid=no
3645 cat > $TMPC << EOF
3646 #include <pthread.h>
3647
3648 static void *f(void *p) { pthread_setname_np("QEMU"); return NULL; }
3649 int main(void)
3650 {
3651     pthread_t thread;
3652     pthread_create(&thread, 0, f, 0);
3653     return 0;
3654 }
3655 EOF
3656 if compile_prog "" "$pthread_lib" ; then
3657   pthread_setname_np_wo_tid=yes
3658 fi
3659
3660 ##########################################
3661 # rbd probe
3662 if test "$rbd" != "no" ; then
3663   cat > $TMPC <<EOF
3664 #include <stdio.h>
3665 #include <rbd/librbd.h>
3666 int main(void) {
3667     rados_t cluster;
3668     rados_create(&cluster, NULL);
3669     return 0;
3670 }
3671 EOF
3672   rbd_libs="-lrbd -lrados"
3673   if compile_prog "" "$rbd_libs" ; then
3674     rbd=yes
3675   else
3676     if test "$rbd" = "yes" ; then
3677       feature_not_found "rados block device" "Install librbd/ceph devel"
3678     fi
3679     rbd=no
3680   fi
3681 fi
3682
3683 ##########################################
3684 # libssh probe
3685 if test "$libssh" != "no" ; then
3686   if $pkg_config --exists libssh; then
3687     libssh_cflags=$($pkg_config libssh --cflags)
3688     libssh_libs=$($pkg_config libssh --libs)
3689     libssh=yes
3690   else
3691     if test "$libssh" = "yes" ; then
3692       error_exit "libssh required for --enable-libssh"
3693     fi
3694     libssh=no
3695   fi
3696 fi
3697
3698 ##########################################
3699 # Check for libssh 0.8
3700 # This is done like this instead of using the LIBSSH_VERSION_* and
3701 # SSH_VERSION_* macros because some distributions in the past shipped
3702 # snapshots of the future 0.8 from Git, and those snapshots did not
3703 # have updated version numbers (still referring to 0.7.0).
3704
3705 if test "$libssh" = "yes"; then
3706   cat > $TMPC <<EOF
3707 #include <libssh/libssh.h>
3708 int main(void) { return ssh_get_server_publickey(NULL, NULL); }
3709 EOF
3710   if compile_prog "$libssh_cflags" "$libssh_libs"; then
3711     libssh_cflags="-DHAVE_LIBSSH_0_8 $libssh_cflags"
3712   fi
3713 fi
3714
3715 ##########################################
3716 # linux-aio probe
3717
3718 if test "$linux_aio" != "no" ; then
3719   cat > $TMPC <<EOF
3720 #include <libaio.h>
3721 #include <sys/eventfd.h>
3722 #include <stddef.h>
3723 int main(void) { io_setup(0, NULL); io_set_eventfd(NULL, 0); eventfd(0, 0); return 0; }
3724 EOF
3725   if compile_prog "" "-laio" ; then
3726     linux_aio=yes
3727   else
3728     if test "$linux_aio" = "yes" ; then
3729       feature_not_found "linux AIO" "Install libaio devel"
3730     fi
3731     linux_aio=no
3732   fi
3733 fi
3734 ##########################################
3735 # linux-io-uring probe
3736
3737 if test "$linux_io_uring" != "no" ; then
3738   if $pkg_config liburing; then
3739     linux_io_uring_cflags=$($pkg_config --cflags liburing)
3740     linux_io_uring_libs=$($pkg_config --libs liburing)
3741     linux_io_uring=yes
3742   else
3743     if test "$linux_io_uring" = "yes" ; then
3744       feature_not_found "linux io_uring" "Install liburing devel"
3745     fi
3746     linux_io_uring=no
3747   fi
3748 fi
3749
3750 ##########################################
3751 # TPM emulation is only on POSIX
3752
3753 if test "$tpm" = ""; then
3754   if test "$mingw32" = "yes"; then
3755     tpm=no
3756   else
3757     tpm=yes
3758   fi
3759 elif test "$tpm" = "yes"; then
3760   if test "$mingw32" = "yes" ; then
3761     error_exit "TPM emulation only available on POSIX systems"
3762   fi
3763 fi
3764
3765 ##########################################
3766 # attr probe
3767
3768 libattr_libs=
3769 if test "$attr" != "no" ; then
3770   cat > $TMPC <<EOF
3771 #include <stdio.h>
3772 #include <sys/types.h>
3773 #ifdef CONFIG_LIBATTR
3774 #include <attr/xattr.h>
3775 #else
3776 #include <sys/xattr.h>
3777 #endif
3778 int main(void) { getxattr(NULL, NULL, NULL, 0); setxattr(NULL, NULL, NULL, 0, 0); return 0; }
3779 EOF
3780   if compile_prog "" "" ; then
3781     attr=yes
3782   # Older distros have <attr/xattr.h>, and need -lattr:
3783   elif compile_prog "-DCONFIG_LIBATTR" "-lattr" ; then
3784     attr=yes
3785     libattr_libs="-lattr"
3786     libattr=yes
3787   else
3788     if test "$attr" = "yes" ; then
3789       feature_not_found "ATTR" "Install libc6 or libattr devel"
3790     fi
3791     attr=no
3792   fi
3793 fi
3794
3795 ##########################################
3796 # iovec probe
3797 cat > $TMPC <<EOF
3798 #include <sys/types.h>
3799 #include <sys/uio.h>
3800 #include <unistd.h>
3801 int main(void) { return sizeof(struct iovec); }
3802 EOF
3803 iovec=no
3804 if compile_prog "" "" ; then
3805   iovec=yes
3806 fi
3807
3808 ##########################################
3809 # preadv probe
3810 cat > $TMPC <<EOF
3811 #include <sys/types.h>
3812 #include <sys/uio.h>
3813 #include <unistd.h>
3814 int main(void) { return preadv(0, 0, 0, 0); }
3815 EOF
3816 preadv=no
3817 if compile_prog "" "" ; then
3818   preadv=yes
3819 fi
3820
3821 ##########################################
3822 # fdt probe
3823
3824 case "$fdt" in
3825   auto | enabled | internal)
3826     # Simpler to always update submodule, even if not needed.
3827     if test -e "${source_path}/.git" && test $git_update = 'yes' ; then
3828       git_submodules="${git_submodules} dtc"
3829     fi
3830     ;;
3831 esac
3832
3833 ##########################################
3834 # opengl probe (for sdl2, gtk, milkymist-tmu2)
3835
3836 gbm="no"
3837 if $pkg_config gbm; then
3838     gbm_cflags="$($pkg_config --cflags gbm)"
3839     gbm_libs="$($pkg_config --libs gbm)"
3840     gbm="yes"
3841 fi
3842
3843 if test "$opengl" != "no" ; then
3844   opengl_pkgs="epoxy gbm"
3845   if $pkg_config $opengl_pkgs; then
3846     opengl_cflags="$($pkg_config --cflags $opengl_pkgs)"
3847     opengl_libs="$($pkg_config --libs $opengl_pkgs)"
3848     opengl=yes
3849     if test "$gtk" = "yes" && $pkg_config --exists "$gtkpackage >= 3.16"; then
3850         gtk_gl="yes"
3851     fi
3852   else
3853     if test "$opengl" = "yes" ; then
3854       feature_not_found "opengl" "Please install opengl (mesa) devel pkgs: $opengl_pkgs"
3855     fi
3856     opengl_cflags=""
3857     opengl_libs=""
3858     opengl=no
3859   fi
3860 fi
3861
3862 if test "$opengl" = "yes"; then
3863   cat > $TMPC << EOF
3864 #include <epoxy/egl.h>
3865 #ifndef EGL_MESA_image_dma_buf_export
3866 # error mesa/epoxy lacks support for dmabufs (mesa 10.6+)
3867 #endif
3868 int main(void) { return 0; }
3869 EOF
3870   if compile_prog "" "" ; then
3871     opengl_dmabuf=yes
3872   fi
3873 fi
3874
3875 if test "$opengl" = "yes" && test "$have_x11" = "yes"; then
3876   for target in $target_list; do
3877     case $target in
3878       lm32-softmmu) # milkymist-tmu2 requires X11 and OpenGL
3879         need_x11=yes
3880       ;;
3881     esac
3882   done
3883 fi
3884
3885 ##########################################
3886 # libxml2 probe
3887 if test "$libxml2" != "no" ; then
3888     if $pkg_config --exists libxml-2.0; then
3889         libxml2="yes"
3890         libxml2_cflags=$($pkg_config --cflags libxml-2.0)
3891         libxml2_libs=$($pkg_config --libs libxml-2.0)
3892     else
3893         if test "$libxml2" = "yes"; then
3894             feature_not_found "libxml2" "Install libxml2 devel"
3895         fi
3896         libxml2="no"
3897     fi
3898 fi
3899
3900 ##########################################
3901 # glusterfs probe
3902 if test "$glusterfs" != "no" ; then
3903   if $pkg_config --atleast-version=3 glusterfs-api; then
3904     glusterfs="yes"
3905     glusterfs_cflags=$($pkg_config --cflags glusterfs-api)
3906     glusterfs_libs=$($pkg_config --libs glusterfs-api)
3907     if $pkg_config --atleast-version=4 glusterfs-api; then
3908       glusterfs_xlator_opt="yes"
3909     fi
3910     if $pkg_config --atleast-version=5 glusterfs-api; then
3911       glusterfs_discard="yes"
3912     fi
3913     if $pkg_config --atleast-version=6 glusterfs-api; then
3914       glusterfs_fallocate="yes"
3915       glusterfs_zerofill="yes"
3916     fi
3917     cat > $TMPC << EOF
3918 #include <glusterfs/api/glfs.h>
3919
3920 int
3921 main(void)
3922 {
3923         /* new glfs_ftruncate() passes two additional args */
3924         return glfs_ftruncate(NULL, 0, NULL, NULL);
3925 }
3926 EOF
3927     if compile_prog "$glusterfs_cflags" "$glusterfs_libs" ; then
3928       glusterfs_ftruncate_has_stat="yes"
3929     fi
3930     cat > $TMPC << EOF
3931 #include <glusterfs/api/glfs.h>
3932
3933 /* new glfs_io_cbk() passes two additional glfs_stat structs */
3934 static void
3935 glusterfs_iocb(glfs_fd_t *fd, ssize_t ret, struct glfs_stat *prestat, struct glfs_stat *poststat, void *data)
3936 {}
3937
3938 int
3939 main(void)
3940 {
3941         glfs_io_cbk iocb = &glusterfs_iocb;
3942         iocb(NULL, 0 , NULL, NULL, NULL);
3943         return 0;
3944 }
3945 EOF
3946     if compile_prog "$glusterfs_cflags" "$glusterfs_libs" ; then
3947       glusterfs_iocb_has_stat="yes"
3948     fi
3949   else
3950     if test "$glusterfs" = "yes" ; then
3951       feature_not_found "GlusterFS backend support" \
3952           "Install glusterfs-api devel >= 3"
3953     fi
3954     glusterfs="no"
3955   fi
3956 fi
3957
3958 # Check for inotify functions when we are building linux-user
3959 # emulator.  This is done because older glibc versions don't
3960 # have syscall stubs for these implemented.  In that case we
3961 # don't provide them even if kernel supports them.
3962 #
3963 inotify=no
3964 cat > $TMPC << EOF
3965 #include <sys/inotify.h>
3966
3967 int
3968 main(void)
3969 {
3970         /* try to start inotify */
3971         return inotify_init();
3972 }
3973 EOF
3974 if compile_prog "" "" ; then
3975   inotify=yes
3976 fi
3977
3978 inotify1=no
3979 cat > $TMPC << EOF
3980 #include <sys/inotify.h>
3981
3982 int
3983 main(void)
3984 {
3985     /* try to start inotify */
3986     return inotify_init1(0);
3987 }
3988 EOF
3989 if compile_prog "" "" ; then
3990   inotify1=yes
3991 fi
3992
3993 # check if pipe2 is there
3994 pipe2=no
3995 cat > $TMPC << EOF
3996 #include <unistd.h>
3997 #include <fcntl.h>
3998
3999 int main(void)
4000 {
4001     int pipefd[2];
4002     return pipe2(pipefd, O_CLOEXEC);
4003 }
4004 EOF
4005 if compile_prog "" "" ; then
4006   pipe2=yes
4007 fi
4008
4009 # check if accept4 is there
4010 accept4=no
4011 cat > $TMPC << EOF
4012 #include <sys/socket.h>
4013 #include <stddef.h>
4014
4015 int main(void)
4016 {
4017     accept4(0, NULL, NULL, SOCK_CLOEXEC);
4018     return 0;
4019 }
4020 EOF
4021 if compile_prog "" "" ; then
4022   accept4=yes
4023 fi
4024
4025 # check if tee/splice is there. vmsplice was added same time.
4026 splice=no
4027 cat > $TMPC << EOF
4028 #include <unistd.h>
4029 #include <fcntl.h>
4030 #include <limits.h>
4031
4032 int main(void)
4033 {
4034     int len, fd = 0;
4035     len = tee(STDIN_FILENO, STDOUT_FILENO, INT_MAX, SPLICE_F_NONBLOCK);
4036     splice(STDIN_FILENO, NULL, fd, NULL, len, SPLICE_F_MOVE);
4037     return 0;
4038 }
4039 EOF
4040 if compile_prog "" "" ; then
4041   splice=yes
4042 fi
4043
4044 ##########################################
4045 # libnuma probe
4046
4047 if test "$numa" != "no" ; then
4048   cat > $TMPC << EOF
4049 #include <numa.h>
4050 int main(void) { return numa_available(); }
4051 EOF
4052
4053   if compile_prog "" "-lnuma" ; then
4054     numa=yes
4055     numa_libs="-lnuma"
4056   else
4057     if test "$numa" = "yes" ; then
4058       feature_not_found "numa" "install numactl devel"
4059     fi
4060     numa=no
4061   fi
4062 fi
4063
4064 malloc=system
4065 if test "$tcmalloc" = "yes" && test "$jemalloc" = "yes" ; then
4066     echo "ERROR: tcmalloc && jemalloc can't be used at the same time"
4067     exit 1
4068 elif test "$tcmalloc" = "yes" ; then
4069     malloc=tcmalloc
4070 elif test "$jemalloc" = "yes" ; then
4071     malloc=jemalloc
4072 fi
4073
4074 ##########################################
4075 # signalfd probe
4076 signalfd="no"
4077 cat > $TMPC << EOF
4078 #include <unistd.h>
4079 #include <sys/syscall.h>
4080 #include <signal.h>
4081 int main(void) { return syscall(SYS_signalfd, -1, NULL, _NSIG / 8); }
4082 EOF
4083
4084 if compile_prog "" "" ; then
4085   signalfd=yes
4086 fi
4087
4088 # check if optreset global is declared by <getopt.h>
4089 optreset="no"
4090 cat > $TMPC << EOF
4091 #include <getopt.h>
4092 int main(void) { return optreset; }
4093 EOF
4094
4095 if compile_prog "" "" ; then
4096   optreset=yes
4097 fi
4098
4099 # check if eventfd is supported
4100 eventfd=no
4101 cat > $TMPC << EOF
4102 #include <sys/eventfd.h>
4103
4104 int main(void)
4105 {
4106     return eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC);
4107 }
4108 EOF
4109 if compile_prog "" "" ; then
4110   eventfd=yes
4111 fi
4112
4113 # check if memfd is supported
4114 memfd=no
4115 cat > $TMPC << EOF
4116 #include <sys/mman.h>
4117
4118 int main(void)
4119 {
4120     return memfd_create("foo", MFD_ALLOW_SEALING);
4121 }
4122 EOF
4123 if compile_prog "" "" ; then
4124   memfd=yes
4125 fi
4126
4127 # check for usbfs
4128 have_usbfs=no
4129 if test "$linux_user" = "yes"; then
4130   cat > $TMPC << EOF
4131 #include <linux/usbdevice_fs.h>
4132
4133 #ifndef USBDEVFS_GET_CAPABILITIES
4134 #error "USBDEVFS_GET_CAPABILITIES undefined"
4135 #endif
4136
4137 #ifndef USBDEVFS_DISCONNECT_CLAIM
4138 #error "USBDEVFS_DISCONNECT_CLAIM undefined"
4139 #endif
4140
4141 int main(void)
4142 {
4143     return 0;
4144 }
4145 EOF
4146   if compile_prog "" ""; then
4147     have_usbfs=yes
4148   fi
4149 fi
4150
4151 # check for fallocate
4152 fallocate=no
4153 cat > $TMPC << EOF
4154 #include <fcntl.h>
4155
4156 int main(void)
4157 {
4158     fallocate(0, 0, 0, 0);
4159     return 0;
4160 }
4161 EOF
4162 if compile_prog "" "" ; then
4163   fallocate=yes
4164 fi
4165
4166 # check for fallocate hole punching
4167 fallocate_punch_hole=no
4168 cat > $TMPC << EOF
4169 #include <fcntl.h>
4170 #include <linux/falloc.h>
4171
4172 int main(void)
4173 {
4174     fallocate(0, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE, 0, 0);
4175     return 0;
4176 }
4177 EOF
4178 if compile_prog "" "" ; then
4179   fallocate_punch_hole=yes
4180 fi
4181
4182 # check that fallocate supports range zeroing inside the file
4183 fallocate_zero_range=no
4184 cat > $TMPC << EOF
4185 #include <fcntl.h>
4186 #include <linux/falloc.h>
4187
4188 int main(void)
4189 {
4190     fallocate(0, FALLOC_FL_ZERO_RANGE, 0, 0);
4191     return 0;
4192 }
4193 EOF
4194 if compile_prog "" "" ; then
4195   fallocate_zero_range=yes
4196 fi
4197
4198 # check for posix_fallocate
4199 posix_fallocate=no
4200 cat > $TMPC << EOF
4201 #include <fcntl.h>
4202
4203 int main(void)
4204 {
4205     posix_fallocate(0, 0, 0);
4206     return 0;
4207 }
4208 EOF
4209 if compile_prog "" "" ; then
4210     posix_fallocate=yes
4211 fi
4212
4213 # check for sync_file_range
4214 sync_file_range=no
4215 cat > $TMPC << EOF
4216 #include <fcntl.h>
4217
4218 int main(void)
4219 {
4220     sync_file_range(0, 0, 0, 0);
4221     return 0;
4222 }
4223 EOF
4224 if compile_prog "" "" ; then
4225   sync_file_range=yes
4226 fi
4227
4228 # check for linux/fiemap.h and FS_IOC_FIEMAP
4229 fiemap=no
4230 cat > $TMPC << EOF
4231 #include <sys/ioctl.h>
4232 #include <linux/fs.h>
4233 #include <linux/fiemap.h>
4234
4235 int main(void)
4236 {
4237     ioctl(0, FS_IOC_FIEMAP, 0);
4238     return 0;
4239 }
4240 EOF
4241 if compile_prog "" "" ; then
4242   fiemap=yes
4243 fi
4244
4245 # check for dup3
4246 dup3=no
4247 cat > $TMPC << EOF
4248 #include <unistd.h>
4249
4250 int main(void)
4251 {
4252     dup3(0, 0, 0);
4253     return 0;
4254 }
4255 EOF
4256 if compile_prog "" "" ; then
4257   dup3=yes
4258 fi
4259
4260 # check for ppoll support
4261 ppoll=no
4262 cat > $TMPC << EOF
4263 #include <poll.h>
4264
4265 int main(void)
4266 {
4267     struct pollfd pfd = { .fd = 0, .events = 0, .revents = 0 };
4268     ppoll(&pfd, 1, 0, 0);
4269     return 0;
4270 }
4271 EOF
4272 if compile_prog "" "" ; then
4273   ppoll=yes
4274 fi
4275
4276 # check for prctl(PR_SET_TIMERSLACK , ... ) support
4277 prctl_pr_set_timerslack=no
4278 cat > $TMPC << EOF
4279 #include <sys/prctl.h>
4280
4281 int main(void)
4282 {
4283     prctl(PR_SET_TIMERSLACK, 1, 0, 0, 0);
4284     return 0;
4285 }
4286 EOF
4287 if compile_prog "" "" ; then
4288   prctl_pr_set_timerslack=yes
4289 fi
4290
4291 # check for epoll support
4292 epoll=no
4293 cat > $TMPC << EOF
4294 #include <sys/epoll.h>
4295
4296 int main(void)
4297 {
4298     epoll_create(0);
4299     return 0;
4300 }
4301 EOF
4302 if compile_prog "" "" ; then
4303   epoll=yes
4304 fi
4305
4306 # epoll_create1 is a later addition
4307 # so we must check separately for its presence
4308 epoll_create1=no
4309 cat > $TMPC << EOF
4310 #include <sys/epoll.h>
4311
4312 int main(void)
4313 {
4314     /* Note that we use epoll_create1 as a value, not as
4315      * a function being called. This is necessary so that on
4316      * old SPARC glibc versions where the function was present in
4317      * the library but not declared in the header file we will
4318      * fail the configure check. (Otherwise we will get a compiler
4319      * warning but not an error, and will proceed to fail the
4320      * qemu compile where we compile with -Werror.)
4321      */
4322     return (int)(uintptr_t)&epoll_create1;
4323 }
4324 EOF
4325 if compile_prog "" "" ; then
4326   epoll_create1=yes
4327 fi
4328
4329 # check for sendfile support
4330 sendfile=no
4331 cat > $TMPC << EOF
4332 #include <sys/sendfile.h>
4333
4334 int main(void)
4335 {
4336     return sendfile(0, 0, 0, 0);
4337 }
4338 EOF
4339 if compile_prog "" "" ; then
4340   sendfile=yes
4341 fi
4342
4343 # check for timerfd support (glibc 2.8 and newer)
4344 timerfd=no
4345 cat > $TMPC << EOF
4346 #include <sys/timerfd.h>
4347
4348 int main(void)
4349 {
4350     return(timerfd_create(CLOCK_REALTIME, 0));
4351 }
4352 EOF
4353 if compile_prog "" "" ; then
4354   timerfd=yes
4355 fi
4356
4357 # check for setns and unshare support
4358 setns=no
4359 cat > $TMPC << EOF
4360 #include <sched.h>
4361
4362 int main(void)
4363 {
4364     int ret;
4365     ret = setns(0, 0);
4366     ret = unshare(0);
4367     return ret;
4368 }
4369 EOF
4370 if compile_prog "" "" ; then
4371   setns=yes
4372 fi
4373
4374 # clock_adjtime probe
4375 clock_adjtime=no
4376 cat > $TMPC <<EOF
4377 #include <time.h>
4378
4379 int main(void)
4380 {
4381     return clock_adjtime(0, 0);
4382 }
4383 EOF
4384 clock_adjtime=no
4385 if compile_prog "" "" ; then
4386   clock_adjtime=yes
4387 fi
4388
4389 # syncfs probe
4390 syncfs=no
4391 cat > $TMPC <<EOF
4392 #include <unistd.h>
4393
4394 int main(void)
4395 {
4396     return syncfs(0);
4397 }
4398 EOF
4399 syncfs=no
4400 if compile_prog "" "" ; then
4401   syncfs=yes
4402 fi
4403
4404 # check for kcov support (kernel must be 4.4+, compiled with certain options)
4405 kcov=no
4406 if check_include sys/kcov.h ; then
4407     kcov=yes
4408 fi
4409
4410 # check for btrfs filesystem support (kernel must be 3.9+)
4411 btrfs=no
4412 if check_include linux/btrfs.h ; then
4413     btrfs=yes
4414 fi
4415
4416 # If we're making warnings fatal, apply this to Sphinx runs as well
4417 sphinx_werror=""
4418 if test "$werror" = "yes"; then
4419     sphinx_werror="-W"
4420 fi
4421
4422 # Check we have a new enough version of sphinx-build
4423 has_sphinx_build() {
4424     # This is a bit awkward but works: create a trivial document and
4425     # try to run it with our configuration file (which enforces a
4426     # version requirement). This will fail if either
4427     # sphinx-build doesn't exist at all or if it is too old.
4428     mkdir -p "$TMPDIR1/sphinx"
4429     touch "$TMPDIR1/sphinx/index.rst"
4430     "$sphinx_build" $sphinx_werror -c "$source_path/docs" \
4431                     -b html "$TMPDIR1/sphinx" \
4432                     "$TMPDIR1/sphinx/out"  >> config.log 2>&1
4433 }
4434
4435 # Check if tools are available to build documentation.
4436 if test "$docs" != "no" ; then
4437   if has_sphinx_build; then
4438     sphinx_ok=yes
4439   else
4440     sphinx_ok=no
4441   fi
4442   if test "$sphinx_ok" = "yes"; then
4443     docs=yes
4444   else
4445     if test "$docs" = "yes" ; then
4446       if has $sphinx_build && test "$sphinx_ok" != "yes"; then
4447         echo "Warning: $sphinx_build exists but it is either too old or uses too old a Python version" >&2
4448       fi
4449       feature_not_found "docs" "Install a Python 3 version of python-sphinx"
4450     fi
4451     docs=no
4452   fi
4453 fi
4454
4455 # Search for bswap_32 function
4456 byteswap_h=no
4457 cat > $TMPC << EOF
4458 #include <byteswap.h>
4459 int main(void) { return bswap_32(0); }
4460 EOF
4461 if compile_prog "" "" ; then
4462   byteswap_h=yes
4463 fi
4464
4465 # Search for bswap32 function
4466 bswap_h=no
4467 cat > $TMPC << EOF
4468 #include <sys/endian.h>
4469 #include <sys/types.h>
4470 #include <machine/bswap.h>
4471 int main(void) { return bswap32(0); }
4472 EOF
4473 if compile_prog "" "" ; then
4474   bswap_h=yes
4475 fi
4476
4477 ##########################################
4478 # Do we have libiscsi >= 1.9.0
4479 if test "$libiscsi" != "no" ; then
4480   if $pkg_config --atleast-version=1.9.0 libiscsi; then
4481     libiscsi="yes"
4482     libiscsi_cflags=$($pkg_config --cflags libiscsi)
4483     libiscsi_libs=$($pkg_config --libs libiscsi)
4484   else
4485     if test "$libiscsi" = "yes" ; then
4486       feature_not_found "libiscsi" "Install libiscsi >= 1.9.0"
4487     fi
4488     libiscsi="no"
4489   fi
4490 fi
4491
4492 ##########################################
4493 # Do we need librt
4494 # uClibc provides 2 versions of clock_gettime(), one with realtime
4495 # support and one without. This means that the clock_gettime() don't
4496 # need -lrt. We still need it for timer_create() so we check for this
4497 # function in addition.
4498 cat > $TMPC <<EOF
4499 #include <signal.h>
4500 #include <time.h>
4501 int main(void) {
4502   timer_create(CLOCK_REALTIME, NULL, NULL);
4503   return clock_gettime(CLOCK_REALTIME, NULL);
4504 }
4505 EOF
4506
4507 if compile_prog "" "" ; then
4508   :
4509 # we need pthread for static linking. use previous pthread test result
4510 elif compile_prog "" "$pthread_lib -lrt" ; then
4511   LIBS="$LIBS -lrt"
4512 fi
4513
4514 # Check whether we have openpty() in either libc or libutil
4515 cat > $TMPC << EOF
4516 extern int openpty(int *am, int *as, char *name, void *termp, void *winp);
4517 int main(void) { return openpty(0, 0, 0, 0, 0); }
4518 EOF
4519
4520 have_openpty="no"
4521 if compile_prog "" "" ; then
4522   have_openpty="yes"
4523 else
4524   if compile_prog "" "-lutil" ; then
4525     have_openpty="yes"
4526   fi
4527 fi
4528
4529 ##########################################
4530 # spice probe
4531 if test "$spice" != "no" ; then
4532   cat > $TMPC << EOF
4533 #include <spice.h>
4534 int main(void) { spice_server_new(); return 0; }
4535 EOF
4536   spice_cflags=$($pkg_config --cflags spice-protocol spice-server 2>/dev/null)
4537   spice_libs=$($pkg_config --libs spice-protocol spice-server 2>/dev/null)
4538   if $pkg_config --atleast-version=0.12.5 spice-server && \
4539      $pkg_config --atleast-version=0.12.3 spice-protocol && \
4540      compile_prog "$spice_cflags" "$spice_libs" ; then
4541     spice="yes"
4542   else
4543     if test "$spice" = "yes" ; then
4544       feature_not_found "spice" \
4545           "Install spice-server(>=0.12.5) and spice-protocol(>=0.12.3) devel"
4546     fi
4547     spice="no"
4548   fi
4549 fi
4550
4551 # check for smartcard support
4552 if test "$smartcard" != "no"; then
4553     if $pkg_config --atleast-version=2.5.1 libcacard; then
4554         libcacard_cflags=$($pkg_config --cflags libcacard)
4555         libcacard_libs=$($pkg_config --libs libcacard)
4556         smartcard="yes"
4557     else
4558         if test "$smartcard" = "yes"; then
4559             feature_not_found "smartcard" "Install libcacard devel"
4560         fi
4561         smartcard="no"
4562     fi
4563 fi
4564
4565 # check for libusb
4566 if test "$libusb" != "no" ; then
4567     if $pkg_config --atleast-version=1.0.13 libusb-1.0; then
4568         libusb="yes"
4569         libusb_cflags=$($pkg_config --cflags libusb-1.0)
4570         libusb_libs=$($pkg_config --libs libusb-1.0)
4571     else
4572         if test "$libusb" = "yes"; then
4573             feature_not_found "libusb" "Install libusb devel >= 1.0.13"
4574         fi
4575         libusb="no"
4576     fi
4577 fi
4578
4579 # check for usbredirparser for usb network redirection support
4580 if test "$usb_redir" != "no" ; then
4581     if $pkg_config --atleast-version=0.6 libusbredirparser-0.5; then
4582         usb_redir="yes"
4583         usb_redir_cflags=$($pkg_config --cflags libusbredirparser-0.5)
4584         usb_redir_libs=$($pkg_config --libs libusbredirparser-0.5)
4585     else
4586         if test "$usb_redir" = "yes"; then
4587             feature_not_found "usb-redir" "Install usbredir devel"
4588         fi
4589         usb_redir="no"
4590     fi
4591 fi
4592
4593 ##########################################
4594 # check if we have VSS SDK headers for win
4595
4596 if test "$mingw32" = "yes" && test "$guest_agent" != "no" && \
4597         test "$vss_win32_sdk" != "no" ; then
4598   case "$vss_win32_sdk" in
4599     "")   vss_win32_include="-isystem $source_path" ;;
4600     *\ *) # The SDK is installed in "Program Files" by default, but we cannot
4601           # handle path with spaces. So we symlink the headers into ".sdk/vss".
4602           vss_win32_include="-isystem $source_path/.sdk/vss"
4603           symlink "$vss_win32_sdk/inc" "$source_path/.sdk/vss/inc"
4604           ;;
4605     *)    vss_win32_include="-isystem $vss_win32_sdk"
4606   esac
4607   cat > $TMPC << EOF
4608 #define __MIDL_user_allocate_free_DEFINED__
4609 #include <inc/win2003/vss.h>
4610 int main(void) { return VSS_CTX_BACKUP; }
4611 EOF
4612   if compile_prog "$vss_win32_include" "" ; then
4613     guest_agent_with_vss="yes"
4614     QEMU_CFLAGS="$QEMU_CFLAGS $vss_win32_include"
4615     libs_qga="-lole32 -loleaut32 -lshlwapi -lstdc++ -Wl,--enable-stdcall-fixup $libs_qga"
4616     qga_vss_provider="qga/vss-win32/qga-vss.dll qga/vss-win32/qga-vss.tlb"
4617   else
4618     if test "$vss_win32_sdk" != "" ; then
4619       echo "ERROR: Please download and install Microsoft VSS SDK:"
4620       echo "ERROR:   http://www.microsoft.com/en-us/download/details.aspx?id=23490"
4621       echo "ERROR: On POSIX-systems, you can extract the SDK headers by:"
4622       echo "ERROR:   scripts/extract-vsssdk-headers setup.exe"
4623       echo "ERROR: The headers are extracted in the directory \`inc'."
4624       feature_not_found "VSS support"
4625     fi
4626     guest_agent_with_vss="no"
4627   fi
4628 fi
4629
4630 ##########################################
4631 # lookup Windows platform SDK (if not specified)
4632 # The SDK is needed only to build .tlb (type library) file of guest agent
4633 # VSS provider from the source. It is usually unnecessary because the
4634 # pre-compiled .tlb file is included.
4635
4636 if test "$mingw32" = "yes" && test "$guest_agent" != "no" && \
4637         test "$guest_agent_with_vss" = "yes" ; then
4638   if test -z "$win_sdk"; then
4639     programfiles="$PROGRAMFILES"
4640     test -n "$PROGRAMW6432" && programfiles="$PROGRAMW6432"
4641     if test -n "$programfiles"; then
4642       win_sdk=$(ls -d "$programfiles/Microsoft SDKs/Windows/v"* | tail -1) 2>/dev/null
4643     else
4644       feature_not_found "Windows SDK"
4645     fi
4646   elif test "$win_sdk" = "no"; then
4647     win_sdk=""
4648   fi
4649 fi
4650
4651 ##########################################
4652 # check if mingw environment provides a recent ntddscsi.h
4653 if test "$mingw32" = "yes" && test "$guest_agent" != "no"; then
4654   cat > $TMPC << EOF
4655 #include <windows.h>
4656 #include <ntddscsi.h>
4657 int main(void) {
4658 #if !defined(IOCTL_SCSI_GET_ADDRESS)
4659 #error Missing required ioctl definitions
4660 #endif
4661   SCSI_ADDRESS addr = { .Lun = 0, .TargetId = 0, .PathId = 0 };
4662   return addr.Lun;
4663 }
4664 EOF
4665   if compile_prog "" "" ; then
4666     guest_agent_ntddscsi=yes
4667     libs_qga="-lsetupapi -lcfgmgr32 $libs_qga"
4668   fi
4669 fi
4670
4671 ##########################################
4672 # virgl renderer probe
4673
4674 if test "$virglrenderer" != "no" ; then
4675   cat > $TMPC << EOF
4676 #include <virglrenderer.h>
4677 int main(void) { virgl_renderer_poll(); return 0; }
4678 EOF
4679   virgl_cflags=$($pkg_config --cflags virglrenderer 2>/dev/null)
4680   virgl_libs=$($pkg_config --libs virglrenderer 2>/dev/null)
4681   virgl_version=$($pkg_config --modversion virglrenderer 2>/dev/null)
4682   if $pkg_config virglrenderer >/dev/null 2>&1 && \
4683      compile_prog "$virgl_cflags" "$virgl_libs" ; then
4684     virglrenderer="yes"
4685   else
4686     if test "$virglrenderer" = "yes" ; then
4687       feature_not_found "virglrenderer"
4688     fi
4689     virglrenderer="no"
4690   fi
4691 fi
4692
4693 ##########################################
4694 # capstone
4695
4696 case "$capstone" in
4697   auto | enabled | internal)
4698     # Simpler to always update submodule, even if not needed.
4699     if test -e "${source_path}/.git" && test $git_update = 'yes' ; then
4700       git_submodules="${git_submodules} capstone"
4701     fi
4702     ;;
4703 esac
4704
4705 ##########################################
4706 # check if we have fdatasync
4707
4708 fdatasync=no
4709 cat > $TMPC << EOF
4710 #include <unistd.h>
4711 int main(void) {
4712 #if defined(_POSIX_SYNCHRONIZED_IO) && _POSIX_SYNCHRONIZED_IO > 0
4713 return fdatasync(0);
4714 #else
4715 #error Not supported
4716 #endif
4717 }
4718 EOF
4719 if compile_prog "" "" ; then
4720     fdatasync=yes
4721 fi
4722
4723 ##########################################
4724 # check if we have madvise
4725
4726 madvise=no
4727 cat > $TMPC << EOF
4728 #include <sys/types.h>
4729 #include <sys/mman.h>
4730 #include <stddef.h>
4731 int main(void) { return madvise(NULL, 0, MADV_DONTNEED); }
4732 EOF
4733 if compile_prog "" "" ; then
4734     madvise=yes
4735 fi
4736
4737 ##########################################
4738 # check if we have posix_madvise
4739
4740 posix_madvise=no
4741 cat > $TMPC << EOF
4742 #include <sys/mman.h>
4743 #include <stddef.h>
4744 int main(void) { return posix_madvise(NULL, 0, POSIX_MADV_DONTNEED); }
4745 EOF
4746 if compile_prog "" "" ; then
4747     posix_madvise=yes
4748 fi
4749
4750 ##########################################
4751 # check if we have posix_memalign()
4752
4753 posix_memalign=no
4754 cat > $TMPC << EOF
4755 #include <stdlib.h>
4756 int main(void) {
4757     void *p;
4758     return posix_memalign(&p, 8, 8);
4759 }
4760 EOF
4761 if compile_prog "" "" ; then
4762     posix_memalign=yes
4763 fi
4764
4765 ##########################################
4766 # check if we have posix_syslog
4767
4768 posix_syslog=no
4769 cat > $TMPC << EOF
4770 #include <syslog.h>
4771 int main(void) { openlog("qemu", LOG_PID, LOG_DAEMON); syslog(LOG_INFO, "configure"); return 0; }
4772 EOF
4773 if compile_prog "" "" ; then
4774     posix_syslog=yes
4775 fi
4776
4777 ##########################################
4778 # check if we have sem_timedwait
4779
4780 sem_timedwait=no
4781 cat > $TMPC << EOF
4782 #include <semaphore.h>
4783 int main(void) { sem_t s; struct timespec t = {0}; return sem_timedwait(&s, &t); }
4784 EOF
4785 if compile_prog "" "" ; then
4786     sem_timedwait=yes
4787 fi
4788
4789 ##########################################
4790 # check if we have strchrnul
4791
4792 strchrnul=no
4793 cat > $TMPC << EOF
4794 #include <string.h>
4795 int main(void);
4796 // Use a haystack that the compiler shouldn't be able to constant fold
4797 char *haystack = (char*)&main;
4798 int main(void) { return strchrnul(haystack, 'x') != &haystack[6]; }
4799 EOF
4800 if compile_prog "" "" ; then
4801     strchrnul=yes
4802 fi
4803
4804 #########################################
4805 # check if we have st_atim
4806
4807 st_atim=no
4808 cat > $TMPC << EOF
4809 #include <sys/stat.h>
4810 #include <stddef.h>
4811 int main(void) { return offsetof(struct stat, st_atim); }
4812 EOF
4813 if compile_prog "" "" ; then
4814     st_atim=yes
4815 fi
4816
4817 ##########################################
4818 # check if trace backend exists
4819
4820 $python "$source_path/scripts/tracetool.py" "--backends=$trace_backends" --check-backends  > /dev/null 2> /dev/null
4821 if test "$?" -ne 0 ; then
4822   error_exit "invalid trace backends" \
4823       "Please choose supported trace backends."
4824 fi
4825
4826 ##########################################
4827 # For 'ust' backend, test if ust headers are present
4828 if have_backend "ust"; then
4829   cat > $TMPC << EOF
4830 #include <lttng/tracepoint.h>
4831 int main(void) { return 0; }
4832 EOF
4833   if compile_prog "" "-Wl,--no-as-needed -ldl" ; then
4834     if $pkg_config lttng-ust --exists; then
4835       lttng_ust_libs=$($pkg_config --libs lttng-ust)
4836     else
4837       lttng_ust_libs="-llttng-ust -ldl"
4838     fi
4839     if $pkg_config liburcu-bp --exists; then
4840       urcu_bp_libs=$($pkg_config --libs liburcu-bp)
4841     else
4842       urcu_bp_libs="-lurcu-bp"
4843     fi
4844   else
4845     error_exit "Trace backend 'ust' missing lttng-ust header files"
4846   fi
4847 fi
4848
4849 ##########################################
4850 # For 'dtrace' backend, test if 'dtrace' command is present
4851 if have_backend "dtrace"; then
4852   if ! has 'dtrace' ; then
4853     error_exit "dtrace command is not found in PATH $PATH"
4854   fi
4855   trace_backend_stap="no"
4856   if has 'stap' ; then
4857     trace_backend_stap="yes"
4858   fi
4859 fi
4860
4861 ##########################################
4862 # check and set a backend for coroutine
4863
4864 # We prefer ucontext, but it's not always possible. The fallback
4865 # is sigcontext. On Windows the only valid backend is the Windows
4866 # specific one.
4867
4868 ucontext_works=no
4869 if test "$darwin" != "yes"; then
4870   cat > $TMPC << EOF
4871 #include <ucontext.h>
4872 #ifdef __stub_makecontext
4873 #error Ignoring glibc stub makecontext which will always fail
4874 #endif
4875 int main(void) { makecontext(0, 0, 0); return 0; }
4876 EOF
4877   if compile_prog "" "" ; then
4878     ucontext_works=yes
4879   fi
4880 fi
4881
4882 if test "$coroutine" = ""; then
4883   if test "$mingw32" = "yes"; then
4884     coroutine=win32
4885   elif test "$ucontext_works" = "yes"; then
4886     coroutine=ucontext
4887   else
4888     coroutine=sigaltstack
4889   fi
4890 else
4891   case $coroutine in
4892   windows)
4893     if test "$mingw32" != "yes"; then
4894       error_exit "'windows' coroutine backend only valid for Windows"
4895     fi
4896     # Unfortunately the user visible backend name doesn't match the
4897     # coroutine-*.c filename for this case, so we have to adjust it here.
4898     coroutine=win32
4899     ;;
4900   ucontext)
4901     if test "$ucontext_works" != "yes"; then
4902       feature_not_found "ucontext"
4903     fi
4904     ;;
4905   sigaltstack)
4906     if test "$mingw32" = "yes"; then
4907       error_exit "only the 'windows' coroutine backend is valid for Windows"
4908     fi
4909     ;;
4910   *)
4911     error_exit "unknown coroutine backend $coroutine"
4912     ;;
4913   esac
4914 fi
4915
4916 if test "$coroutine_pool" = ""; then
4917   coroutine_pool=yes
4918 fi
4919
4920 if test "$debug_stack_usage" = "yes"; then
4921   if test "$coroutine_pool" = "yes"; then
4922     echo "WARN: disabling coroutine pool for stack usage debugging"
4923     coroutine_pool=no
4924   fi
4925 fi
4926
4927 ##################################################
4928 # SafeStack
4929
4930
4931 if test "$safe_stack" = "yes"; then
4932 cat > $TMPC << EOF
4933 int main(int argc, char *argv[])
4934 {
4935 #if ! __has_feature(safe_stack)
4936 #error SafeStack Disabled
4937 #endif
4938     return 0;
4939 }
4940 EOF
4941   flag="-fsanitize=safe-stack"
4942   # Check that safe-stack is supported and enabled.
4943   if compile_prog "-Werror $flag" "$flag"; then
4944     # Flag needed both at compilation and at linking
4945     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
4946     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
4947   else
4948     error_exit "SafeStack not supported by your compiler"
4949   fi
4950   if test "$coroutine" != "ucontext"; then
4951     error_exit "SafeStack is only supported by the coroutine backend ucontext"
4952   fi
4953 else
4954 cat > $TMPC << EOF
4955 int main(int argc, char *argv[])
4956 {
4957 #if defined(__has_feature)
4958 #if __has_feature(safe_stack)
4959 #error SafeStack Enabled
4960 #endif
4961 #endif
4962     return 0;
4963 }
4964 EOF
4965 if test "$safe_stack" = "no"; then
4966   # Make sure that safe-stack is disabled
4967   if ! compile_prog "-Werror" ""; then
4968     # SafeStack was already enabled, try to explicitly remove the feature
4969     flag="-fno-sanitize=safe-stack"
4970     if ! compile_prog "-Werror $flag" "$flag"; then
4971       error_exit "Configure cannot disable SafeStack"
4972     fi
4973     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
4974     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
4975   fi
4976 else # "$safe_stack" = ""
4977   # Set safe_stack to yes or no based on pre-existing flags
4978   if compile_prog "-Werror" ""; then
4979     safe_stack="no"
4980   else
4981     safe_stack="yes"
4982     if test "$coroutine" != "ucontext"; then
4983       error_exit "SafeStack is only supported by the coroutine backend ucontext"
4984     fi
4985   fi
4986 fi
4987 fi
4988
4989 ##########################################
4990 # check if we have open_by_handle_at
4991
4992 open_by_handle_at=no
4993 cat > $TMPC << EOF
4994 #include <fcntl.h>
4995 #if !defined(AT_EMPTY_PATH)
4996 # error missing definition
4997 #else
4998 int main(void) { struct file_handle fh; return open_by_handle_at(0, &fh, 0); }
4999 #endif
5000 EOF
5001 if compile_prog "" "" ; then
5002     open_by_handle_at=yes
5003 fi
5004
5005 ########################################
5006 # check if we have linux/magic.h
5007
5008 linux_magic_h=no
5009 cat > $TMPC << EOF
5010 #include <linux/magic.h>
5011 int main(void) {
5012   return 0;
5013 }
5014 EOF
5015 if compile_prog "" "" ; then
5016     linux_magic_h=yes
5017 fi
5018
5019 ########################################
5020 # check if we have valgrind/valgrind.h
5021
5022 valgrind_h=no
5023 cat > $TMPC << EOF
5024 #include <valgrind/valgrind.h>
5025 int main(void) {
5026   return 0;
5027 }
5028 EOF
5029 if compile_prog "" "" ; then
5030     valgrind_h=yes
5031 fi
5032
5033 ########################################
5034 # check if environ is declared
5035
5036 has_environ=no
5037 cat > $TMPC << EOF
5038 #include <unistd.h>
5039 int main(void) {
5040     environ = 0;
5041     return 0;
5042 }
5043 EOF
5044 if compile_prog "" "" ; then
5045     has_environ=yes
5046 fi
5047
5048 ########################################
5049 # check if cpuid.h is usable.
5050
5051 cat > $TMPC << EOF
5052 #include <cpuid.h>
5053 int main(void) {
5054     unsigned a, b, c, d;
5055     int max = __get_cpuid_max(0, 0);
5056
5057     if (max >= 1) {
5058         __cpuid(1, a, b, c, d);
5059     }
5060
5061     if (max >= 7) {
5062         __cpuid_count(7, 0, a, b, c, d);
5063     }
5064
5065     return 0;
5066 }
5067 EOF
5068 if compile_prog "" "" ; then
5069     cpuid_h=yes
5070 fi
5071
5072 ##########################################
5073 # avx2 optimization requirement check
5074 #
5075 # There is no point enabling this if cpuid.h is not usable,
5076 # since we won't be able to select the new routines.
5077
5078 if test "$cpuid_h" = "yes" && test "$avx2_opt" != "no"; then
5079   cat > $TMPC << EOF
5080 #pragma GCC push_options
5081 #pragma GCC target("avx2")
5082 #include <cpuid.h>
5083 #include <immintrin.h>
5084 static int bar(void *a) {
5085     __m256i x = *(__m256i *)a;
5086     return _mm256_testz_si256(x, x);
5087 }
5088 int main(int argc, char *argv[]) { return bar(argv[0]); }
5089 EOF
5090   if compile_object "" ; then
5091     avx2_opt="yes"
5092   else
5093     avx2_opt="no"
5094   fi
5095 fi
5096
5097 ##########################################
5098 # avx512f optimization requirement check
5099 #
5100 # There is no point enabling this if cpuid.h is not usable,
5101 # since we won't be able to select the new routines.
5102 # by default, it is turned off.
5103 # if user explicitly want to enable it, check environment
5104
5105 if test "$cpuid_h" = "yes" && test "$avx512f_opt" = "yes"; then
5106   cat > $TMPC << EOF
5107 #pragma GCC push_options
5108 #pragma GCC target("avx512f")
5109 #include <cpuid.h>
5110 #include <immintrin.h>
5111 static int bar(void *a) {
5112     __m512i x = *(__m512i *)a;
5113     return _mm512_test_epi64_mask(x, x);
5114 }
5115 int main(int argc, char *argv[])
5116 {
5117         return bar(argv[0]);
5118 }
5119 EOF
5120   if ! compile_object "" ; then
5121     avx512f_opt="no"
5122   fi
5123 else
5124   avx512f_opt="no"
5125 fi
5126
5127 ########################################
5128 # check if __[u]int128_t is usable.
5129
5130 int128=no
5131 cat > $TMPC << EOF
5132 __int128_t a;
5133 __uint128_t b;
5134 int main (void) {
5135   a = a + b;
5136   b = a * b;
5137   a = a * a;
5138   return 0;
5139 }
5140 EOF
5141 if compile_prog "" "" ; then
5142     int128=yes
5143 fi
5144
5145 #########################################
5146 # See if 128-bit atomic operations are supported.
5147
5148 atomic128=no
5149 if test "$int128" = "yes"; then
5150   cat > $TMPC << EOF
5151 int main(void)
5152 {
5153   unsigned __int128 x = 0, y = 0;
5154   y = __atomic_load_16(&x, 0);
5155   __atomic_store_16(&x, y, 0);
5156   __atomic_compare_exchange_16(&x, &y, x, 0, 0, 0);
5157   return 0;
5158 }
5159 EOF
5160   if compile_prog "" "" ; then
5161     atomic128=yes
5162   fi
5163 fi
5164
5165 cmpxchg128=no
5166 if test "$int128" = yes && test "$atomic128" = no; then
5167   cat > $TMPC << EOF
5168 int main(void)
5169 {
5170   unsigned __int128 x = 0, y = 0;
5171   __sync_val_compare_and_swap_16(&x, y, x);
5172   return 0;
5173 }
5174 EOF
5175   if compile_prog "" "" ; then
5176     cmpxchg128=yes
5177   fi
5178 fi
5179
5180 #########################################
5181 # See if 64-bit atomic operations are supported.
5182 # Note that without __atomic builtins, we can only
5183 # assume atomic loads/stores max at pointer size.
5184
5185 cat > $TMPC << EOF
5186 #include <stdint.h>
5187 int main(void)
5188 {
5189   uint64_t x = 0, y = 0;
5190 #ifdef __ATOMIC_RELAXED
5191   y = __atomic_load_n(&x, __ATOMIC_RELAXED);
5192   __atomic_store_n(&x, y, __ATOMIC_RELAXED);
5193   __atomic_compare_exchange_n(&x, &y, x, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
5194   __atomic_exchange_n(&x, y, __ATOMIC_RELAXED);
5195   __atomic_fetch_add(&x, y, __ATOMIC_RELAXED);
5196 #else
5197   typedef char is_host64[sizeof(void *) >= sizeof(uint64_t) ? 1 : -1];
5198   __sync_lock_test_and_set(&x, y);
5199   __sync_val_compare_and_swap(&x, y, 0);
5200   __sync_fetch_and_add(&x, y);
5201 #endif
5202   return 0;
5203 }
5204 EOF
5205 if compile_prog "" "" ; then
5206   atomic64=yes
5207 fi
5208
5209 #########################################
5210 # See if --dynamic-list is supported by the linker
5211 ld_dynamic_list="no"
5212 if test "$static" = "no" ; then
5213     cat > $TMPTXT <<EOF
5214 {
5215   foo;
5216 };
5217 EOF
5218
5219     cat > $TMPC <<EOF
5220 #include <stdio.h>
5221 void foo(void);
5222
5223 void foo(void)
5224 {
5225   printf("foo\n");
5226 }
5227
5228 int main(void)
5229 {
5230   foo();
5231   return 0;
5232 }
5233 EOF
5234
5235     if compile_prog "" "-Wl,--dynamic-list=$TMPTXT" ; then
5236         ld_dynamic_list="yes"
5237     fi
5238 fi
5239
5240 #########################################
5241 # See if -exported_symbols_list is supported by the linker
5242
5243 ld_exported_symbols_list="no"
5244 if test "$static" = "no" ; then
5245     cat > $TMPTXT <<EOF
5246   _foo
5247 EOF
5248
5249     if compile_prog "" "-Wl,-exported_symbols_list,$TMPTXT" ; then
5250         ld_exported_symbols_list="yes"
5251     fi
5252 fi
5253
5254 if  test "$plugins" = "yes" &&
5255     test "$ld_dynamic_list" = "no" &&
5256     test "$ld_exported_symbols_list" = "no" ; then
5257   error_exit \
5258       "Plugin support requires dynamic linking and specifying a set of symbols " \
5259       "that are exported to plugins. Unfortunately your linker doesn't " \
5260       "support the flag (--dynamic-list or -exported_symbols_list) used " \
5261       "for this purpose. You can't build with --static."
5262 fi
5263
5264 ########################################
5265 # See if __attribute__((alias)) is supported.
5266 # This false for Xcode 9, but has been remedied for Xcode 10.
5267 # Unfortunately, travis uses Xcode 9 by default.
5268
5269 attralias=no
5270 cat > $TMPC << EOF
5271 int x = 1;
5272 extern const int y __attribute__((alias("x")));
5273 int main(void) { return 0; }
5274 EOF
5275 if compile_prog "" "" ; then
5276     attralias=yes
5277 fi
5278
5279 ########################################
5280 # check if getauxval is available.
5281
5282 getauxval=no
5283 cat > $TMPC << EOF
5284 #include <sys/auxv.h>
5285 int main(void) {
5286   return getauxval(AT_HWCAP) == 0;
5287 }
5288 EOF
5289 if compile_prog "" "" ; then
5290     getauxval=yes
5291 fi
5292
5293 ########################################
5294 # check if ccache is interfering with
5295 # semantic analysis of macros
5296
5297 unset CCACHE_CPP2
5298 ccache_cpp2=no
5299 cat > $TMPC << EOF
5300 static const int Z = 1;
5301 #define fn() ({ Z; })
5302 #define TAUT(X) ((X) == Z)
5303 #define PAREN(X, Y) (X == Y)
5304 #define ID(X) (X)
5305 int main(int argc, char *argv[])
5306 {
5307     int x = 0, y = 0;
5308     x = ID(x);
5309     x = fn();
5310     fn();
5311     if (PAREN(x, y)) return 0;
5312     if (TAUT(Z)) return 0;
5313     return 0;
5314 }
5315 EOF
5316
5317 if ! compile_object "-Werror"; then
5318     ccache_cpp2=yes
5319 fi
5320
5321 #################################################
5322 # clang does not support glibc + FORTIFY_SOURCE.
5323
5324 if test "$fortify_source" != "no"; then
5325   if echo | $cc -dM -E - | grep __clang__ > /dev/null 2>&1 ; then
5326     fortify_source="no";
5327   elif test -n "$cxx" && has $cxx &&
5328        echo | $cxx -dM -E - | grep __clang__ >/dev/null 2>&1 ; then
5329     fortify_source="no";
5330   else
5331     fortify_source="yes"
5332   fi
5333 fi
5334
5335 ###############################################
5336 # Check if copy_file_range is provided by glibc
5337 have_copy_file_range=no
5338 cat > $TMPC << EOF
5339 #include <unistd.h>
5340 int main(void) {
5341   copy_file_range(0, NULL, 0, NULL, 0, 0);
5342   return 0;
5343 }
5344 EOF
5345 if compile_prog "" "" ; then
5346     have_copy_file_range=yes
5347 fi
5348
5349 ##########################################
5350 # check if struct fsxattr is available via linux/fs.h
5351
5352 have_fsxattr=no
5353 cat > $TMPC << EOF
5354 #include <linux/fs.h>
5355 struct fsxattr foo;
5356 int main(void) {
5357   return 0;
5358 }
5359 EOF
5360 if compile_prog "" "" ; then
5361     have_fsxattr=yes
5362 fi
5363
5364 ##########################################
5365 # check for usable membarrier system call
5366 if test "$membarrier" = "yes"; then
5367     have_membarrier=no
5368     if test "$mingw32" = "yes" ; then
5369         have_membarrier=yes
5370     elif test "$linux" = "yes" ; then
5371         cat > $TMPC << EOF
5372     #include <linux/membarrier.h>
5373     #include <sys/syscall.h>
5374     #include <unistd.h>
5375     #include <stdlib.h>
5376     int main(void) {
5377         syscall(__NR_membarrier, MEMBARRIER_CMD_QUERY, 0);
5378         syscall(__NR_membarrier, MEMBARRIER_CMD_SHARED, 0);
5379         exit(0);
5380     }
5381 EOF
5382         if compile_prog "" "" ; then
5383             have_membarrier=yes
5384         fi
5385     fi
5386     if test "$have_membarrier" = "no"; then
5387       feature_not_found "membarrier" "membarrier system call not available"
5388     fi
5389 else
5390     # Do not enable it by default even for Mingw32, because it doesn't
5391     # work on Wine.
5392     membarrier=no
5393 fi
5394
5395 ##########################################
5396 # check if rtnetlink.h exists and is useful
5397 have_rtnetlink=no
5398 cat > $TMPC << EOF
5399 #include <linux/rtnetlink.h>
5400 int main(void) {
5401   return IFLA_PROTO_DOWN;
5402 }
5403 EOF
5404 if compile_prog "" "" ; then
5405     have_rtnetlink=yes
5406 fi
5407
5408 ##########################################
5409 # check for usable AF_VSOCK environment
5410 have_af_vsock=no
5411 cat > $TMPC << EOF
5412 #include <errno.h>
5413 #include <sys/types.h>
5414 #include <sys/socket.h>
5415 #if !defined(AF_VSOCK)
5416 # error missing AF_VSOCK flag
5417 #endif
5418 #include <linux/vm_sockets.h>
5419 int main(void) {
5420     int sock, ret;
5421     struct sockaddr_vm svm;
5422     socklen_t len = sizeof(svm);
5423     sock = socket(AF_VSOCK, SOCK_STREAM, 0);
5424     ret = getpeername(sock, (struct sockaddr *)&svm, &len);
5425     if ((ret == -1) && (errno == ENOTCONN)) {
5426         return 0;
5427     }
5428     return -1;
5429 }
5430 EOF
5431 if compile_prog "" "" ; then
5432     have_af_vsock=yes
5433 fi
5434
5435 ##########################################
5436 # check for usable AF_ALG environment
5437 have_afalg=no
5438 cat > $TMPC << EOF
5439 #include <errno.h>
5440 #include <sys/types.h>
5441 #include <sys/socket.h>
5442 #include <linux/if_alg.h>
5443 int main(void) {
5444     int sock;
5445     sock = socket(AF_ALG, SOCK_SEQPACKET, 0);
5446     return sock;
5447 }
5448 EOF
5449 if compile_prog "" "" ; then
5450     have_afalg=yes
5451 fi
5452 if test "$crypto_afalg" = "yes"
5453 then
5454     if test "$have_afalg" != "yes"
5455     then
5456         error_exit "AF_ALG requested but could not be detected"
5457     fi
5458 fi
5459
5460
5461 #################################################
5462 # check for sysmacros.h
5463
5464 have_sysmacros=no
5465 cat > $TMPC << EOF
5466 #include <sys/sysmacros.h>
5467 int main(void) {
5468     return makedev(0, 0);
5469 }
5470 EOF
5471 if compile_prog "" "" ; then
5472     have_sysmacros=yes
5473 fi
5474
5475 ##########################################
5476 # check for _Static_assert()
5477
5478 have_static_assert=no
5479 cat > $TMPC << EOF
5480 _Static_assert(1, "success");
5481 int main(void) {
5482     return 0;
5483 }
5484 EOF
5485 if compile_prog "" "" ; then
5486     have_static_assert=yes
5487 fi
5488
5489 ##########################################
5490 # check for utmpx.h, it is missing e.g. on OpenBSD
5491
5492 have_utmpx=no
5493 cat > $TMPC << EOF
5494 #include <utmpx.h>
5495 struct utmpx user_info;
5496 int main(void) {
5497     return 0;
5498 }
5499 EOF
5500 if compile_prog "" "" ; then
5501     have_utmpx=yes
5502 fi
5503
5504 ##########################################
5505 # check for getrandom()
5506
5507 have_getrandom=no
5508 cat > $TMPC << EOF
5509 #include <sys/random.h>
5510 int main(void) {
5511     return getrandom(0, 0, GRND_NONBLOCK);
5512 }
5513 EOF
5514 if compile_prog "" "" ; then
5515     have_getrandom=yes
5516 fi
5517
5518 ##########################################
5519 # checks for sanitizers
5520
5521 have_asan=no
5522 have_ubsan=no
5523 have_asan_iface_h=no
5524 have_asan_iface_fiber=no
5525
5526 if test "$sanitizers" = "yes" ; then
5527   write_c_skeleton
5528   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" ""; then
5529       have_asan=yes
5530   fi
5531
5532   # we could use a simple skeleton for flags checks, but this also
5533   # detect the static linking issue of ubsan, see also:
5534   # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84285
5535   cat > $TMPC << EOF
5536 #include <stdlib.h>
5537 int main(void) {
5538     void *tmp = malloc(10);
5539     if (tmp != NULL) {
5540         return *(int *)(tmp + 2);
5541     }
5542     return 1;
5543 }
5544 EOF
5545   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=undefined" ""; then
5546       have_ubsan=yes
5547   fi
5548
5549   if check_include "sanitizer/asan_interface.h" ; then
5550       have_asan_iface_h=yes
5551   fi
5552
5553   cat > $TMPC << EOF
5554 #include <sanitizer/asan_interface.h>
5555 int main(void) {
5556   __sanitizer_start_switch_fiber(0, 0, 0);
5557   return 0;
5558 }
5559 EOF
5560   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" "" ; then
5561       have_asan_iface_fiber=yes
5562   fi
5563 fi
5564
5565 ##########################################
5566 # checks for fuzzer
5567 if test "$fuzzing" = "yes" && test -z "${LIB_FUZZING_ENGINE+xxx}"; then
5568   write_c_fuzzer_skeleton
5569   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=fuzzer" ""; then
5570     have_fuzzer=yes
5571   else
5572     error_exit "Your compiler doesn't support -fsanitize=fuzzer"
5573     exit 1
5574   fi
5575 fi
5576
5577 # Thread sanitizer is, for now, much noisier than the other sanitizers;
5578 # keep it separate until that is not the case.
5579 if test "$tsan" = "yes" && test "$sanitizers" = "yes"; then
5580   error_exit "TSAN is not supported with other sanitiziers."
5581 fi
5582 have_tsan=no
5583 have_tsan_iface_fiber=no
5584 if test "$tsan" = "yes" ; then
5585   write_c_skeleton
5586   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
5587       have_tsan=yes
5588   fi
5589   cat > $TMPC << EOF
5590 #include <sanitizer/tsan_interface.h>
5591 int main(void) {
5592   __tsan_create_fiber(0);
5593   return 0;
5594 }
5595 EOF
5596   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
5597       have_tsan_iface_fiber=yes
5598   fi
5599 fi
5600
5601 ##########################################
5602 # check for libpmem
5603
5604 if test "$libpmem" != "no"; then
5605         if $pkg_config --exists "libpmem"; then
5606                 libpmem="yes"
5607                 libpmem_libs=$($pkg_config --libs libpmem)
5608                 libpmem_cflags=$($pkg_config --cflags libpmem)
5609         else
5610                 if test "$libpmem" = "yes" ; then
5611                         feature_not_found "libpmem" "Install nvml or pmdk"
5612                 fi
5613                 libpmem="no"
5614         fi
5615 fi
5616
5617 ##########################################
5618 # check for libdaxctl
5619
5620 if test "$libdaxctl" != "no"; then
5621         if $pkg_config --atleast-version=57 "libdaxctl"; then
5622                 libdaxctl="yes"
5623                 libdaxctl_libs=$($pkg_config --libs libdaxctl)
5624                 libdaxctl_cflags=$($pkg_config --cflags libdaxctl)
5625         else
5626                 if test "$libdaxctl" = "yes" ; then
5627                         feature_not_found "libdaxctl" "Install libdaxctl"
5628                 fi
5629                 libdaxctl="no"
5630         fi
5631 fi
5632
5633 ##########################################
5634 # check for slirp
5635
5636 case "$slirp" in
5637   auto | enabled | internal)
5638     # Simpler to always update submodule, even if not needed.
5639     if test -e "${source_path}/.git" && test $git_update = 'yes' ; then
5640       git_submodules="${git_submodules} slirp"
5641     fi
5642     ;;
5643 esac
5644
5645 ##########################################
5646 # check for usable __NR_keyctl syscall
5647
5648 if test "$linux" = "yes" ; then
5649
5650     have_keyring=no
5651     cat > $TMPC << EOF
5652 #include <errno.h>
5653 #include <asm/unistd.h>
5654 #include <linux/keyctl.h>
5655 #include <unistd.h>
5656 int main(void) {
5657     return syscall(__NR_keyctl, KEYCTL_READ, 0, NULL, NULL, 0);
5658 }
5659 EOF
5660     if compile_prog "" "" ; then
5661         have_keyring=yes
5662     fi
5663 fi
5664 if test "$secret_keyring" != "no"
5665 then
5666     if test "$have_keyring" = "yes"
5667     then
5668         secret_keyring=yes
5669     else
5670         if test "$secret_keyring" = "yes"
5671         then
5672             error_exit "syscall __NR_keyctl requested, \
5673 but not implemented on your system"
5674         else
5675             secret_keyring=no
5676         fi
5677     fi
5678 fi
5679
5680 ##########################################
5681 # End of CC checks
5682 # After here, no more $cc or $ld runs
5683
5684 write_c_skeleton
5685
5686 if test "$gcov" = "yes" ; then
5687   :
5688 elif test "$fortify_source" = "yes" ; then
5689   QEMU_CFLAGS="-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $QEMU_CFLAGS"
5690   debug=no
5691 fi
5692
5693 case "$ARCH" in
5694 alpha)
5695   # Ensure there's only a single GP
5696   QEMU_CFLAGS="-msmall-data $QEMU_CFLAGS"
5697 ;;
5698 esac
5699
5700 if test "$gprof" = "yes" ; then
5701   QEMU_CFLAGS="-p $QEMU_CFLAGS"
5702   QEMU_LDFLAGS="-p $QEMU_LDFLAGS"
5703 fi
5704
5705 if test "$have_asan" = "yes"; then
5706   QEMU_CFLAGS="-fsanitize=address $QEMU_CFLAGS"
5707   QEMU_LDFLAGS="-fsanitize=address $QEMU_LDFLAGS"
5708   if test "$have_asan_iface_h" = "no" ; then
5709       echo "ASAN build enabled, but ASAN header missing." \
5710            "Without code annotation, the report may be inferior."
5711   elif test "$have_asan_iface_fiber" = "no" ; then
5712       echo "ASAN build enabled, but ASAN header is too old." \
5713            "Without code annotation, the report may be inferior."
5714   fi
5715 fi
5716 if test "$have_tsan" = "yes" ; then
5717   if test "$have_tsan_iface_fiber" = "yes" ; then
5718     QEMU_CFLAGS="-fsanitize=thread $QEMU_CFLAGS"
5719     QEMU_LDFLAGS="-fsanitize=thread $QEMU_LDFLAGS"
5720   else
5721     error_exit "Cannot enable TSAN due to missing fiber annotation interface."
5722   fi
5723 elif test "$tsan" = "yes" ; then
5724   error_exit "Cannot enable TSAN due to missing sanitize thread interface."
5725 fi
5726 if test "$have_ubsan" = "yes"; then
5727   QEMU_CFLAGS="-fsanitize=undefined $QEMU_CFLAGS"
5728   QEMU_LDFLAGS="-fsanitize=undefined $QEMU_LDFLAGS"
5729 fi
5730
5731 ##########################################
5732 # Do we have libnfs
5733 if test "$libnfs" != "no" ; then
5734   if $pkg_config --atleast-version=1.9.3 libnfs; then
5735     libnfs="yes"
5736     libnfs_libs=$($pkg_config --libs libnfs)
5737   else
5738     if test "$libnfs" = "yes" ; then
5739       feature_not_found "libnfs" "Install libnfs devel >= 1.9.3"
5740     fi
5741     libnfs="no"
5742   fi
5743 fi
5744
5745 ##########################################
5746
5747 # Exclude --warn-common with TSan to suppress warnings from the TSan libraries.
5748 if test "$solaris" = "no" && test "$tsan" = "no"; then
5749     if $ld --version 2>/dev/null | grep "GNU ld" >/dev/null 2>/dev/null ; then
5750         QEMU_LDFLAGS="-Wl,--warn-common $QEMU_LDFLAGS"
5751     fi
5752 fi
5753
5754 # Use ASLR, no-SEH and DEP if available
5755 if test "$mingw32" = "yes" ; then
5756     flags="--no-seh --nxcompat"
5757
5758     # Disable ASLR for debug builds to allow debugging with gdb
5759     if test "$debug" = "no" ; then
5760         flags="--dynamicbase $flags"
5761     fi
5762
5763     for flag in $flags; do
5764         if ld_has $flag ; then
5765             QEMU_LDFLAGS="-Wl,$flag $QEMU_LDFLAGS"
5766         fi
5767     done
5768 fi
5769
5770 qemu_confdir="$sysconfdir/$qemu_suffix"
5771 qemu_moddir="$libdir/$qemu_suffix"
5772 qemu_datadir="$datadir/$qemu_suffix"
5773 qemu_docdir="$docdir/$qemu_suffix"
5774 qemu_localedir="$datadir/locale"
5775 qemu_icondir="$datadir/icons"
5776 qemu_desktopdir="$datadir/applications"
5777
5778 # We can only support ivshmem if we have eventfd
5779 if [ "$eventfd" = "yes" ]; then
5780   ivshmem=yes
5781 fi
5782
5783 if test "$softmmu" = yes ; then
5784   if test "$linux" = yes; then
5785     if test "$virtfs" != no && test "$cap_ng" = yes && test "$attr" = yes ; then
5786       virtfs=yes
5787     else
5788       if test "$virtfs" = yes; then
5789         error_exit "VirtFS requires libcap-ng devel and libattr devel"
5790       fi
5791       virtfs=no
5792     fi
5793   else
5794     if test "$virtfs" = yes; then
5795       error_exit "VirtFS is supported only on Linux"
5796     fi
5797     virtfs=no
5798   fi
5799 fi
5800
5801 # Probe for guest agent support/options
5802
5803 if [ "$guest_agent" != "no" ]; then
5804   if [ "$softmmu" = no -a "$want_tools" = no ] ; then
5805       guest_agent=no
5806   elif [ "$linux" = "yes" -o "$bsd" = "yes" -o "$solaris" = "yes" -o "$mingw32" = "yes" ] ; then
5807       guest_agent=yes
5808   elif [ "$guest_agent" != yes ]; then
5809       guest_agent=no
5810   else
5811       error_exit "Guest agent is not supported on this platform"
5812   fi
5813 fi
5814
5815 # Guest agent Window MSI  package
5816
5817 if test "$guest_agent" != yes; then
5818   if test "$guest_agent_msi" = yes; then
5819     error_exit "MSI guest agent package requires guest agent enabled"
5820   fi
5821   guest_agent_msi=no
5822 elif test "$mingw32" != "yes"; then
5823   if test "$guest_agent_msi" = "yes"; then
5824     error_exit "MSI guest agent package is available only for MinGW Windows cross-compilation"
5825   fi
5826   guest_agent_msi=no
5827 elif ! has wixl; then
5828   if test "$guest_agent_msi" = "yes"; then
5829     error_exit "MSI guest agent package requires wixl tool installed ( usually from msitools package )"
5830   fi
5831   guest_agent_msi=no
5832 else
5833   # we support qemu-ga, mingw32, and wixl: default to MSI enabled if it wasn't
5834   # disabled explicitly
5835   if test "$guest_agent_msi" != "no"; then
5836     guest_agent_msi=yes
5837   fi
5838 fi
5839
5840 if test "$guest_agent_msi" = "yes"; then
5841   if test "$guest_agent_with_vss" = "yes"; then
5842     QEMU_GA_MSI_WITH_VSS="-D InstallVss"
5843   fi
5844
5845   if test "$QEMU_GA_MANUFACTURER" = ""; then
5846     QEMU_GA_MANUFACTURER=QEMU
5847   fi
5848
5849   if test "$QEMU_GA_DISTRO" = ""; then
5850     QEMU_GA_DISTRO=Linux
5851   fi
5852
5853   if test "$QEMU_GA_VERSION" = ""; then
5854       QEMU_GA_VERSION=$(cat $source_path/VERSION)
5855   fi
5856
5857   QEMU_GA_MSI_MINGW_DLL_PATH="-D Mingw_dlls=$($pkg_config --variable=prefix glib-2.0)/bin"
5858
5859   case "$cpu" in
5860   x86_64)
5861     QEMU_GA_MSI_ARCH="-a x64 -D Arch=64"
5862     ;;
5863   i386)
5864     QEMU_GA_MSI_ARCH="-D Arch=32"
5865     ;;
5866   *)
5867     error_exit "CPU $cpu not supported for building installation package"
5868     ;;
5869   esac
5870 fi
5871
5872 # Mac OS X ships with a broken assembler
5873 roms=
5874 if { test "$cpu" = "i386" || test "$cpu" = "x86_64"; } && \
5875         test "$targetos" != "Darwin" && test "$targetos" != "SunOS" && \
5876         test "$softmmu" = yes ; then
5877     # Different host OS linkers have different ideas about the name of the ELF
5878     # emulation. Linux and OpenBSD/amd64 use 'elf_i386'; FreeBSD uses the _fbsd
5879     # variant; OpenBSD/i386 uses the _obsd variant; and Windows uses i386pe.
5880     for emu in elf_i386 elf_i386_fbsd elf_i386_obsd i386pe; do
5881         if "$ld" -verbose 2>&1 | grep -q "^[[:space:]]*$emu[[:space:]]*$"; then
5882             ld_i386_emulation="$emu"
5883             roms="optionrom"
5884             break
5885         fi
5886     done
5887 fi
5888
5889 # Only build s390-ccw bios if we're on s390x and the compiler has -march=z900
5890 if test "$cpu" = "s390x" ; then
5891   write_c_skeleton
5892   if compile_prog "-march=z900" ""; then
5893     roms="$roms s390-ccw"
5894     # SLOF is required for building the s390-ccw firmware on s390x,
5895     # since it is using the libnet code from SLOF for network booting.
5896     if test -e "${source_path}/.git" ; then
5897       git_submodules="${git_submodules} roms/SLOF"
5898     fi
5899   fi
5900 fi
5901
5902 # Check that the C++ compiler exists and works with the C compiler.
5903 # All the QEMU_CXXFLAGS are based on QEMU_CFLAGS. Keep this at the end to don't miss any other that could be added.
5904 if has $cxx; then
5905     cat > $TMPC <<EOF
5906 int c_function(void);
5907 int main(void) { return c_function(); }
5908 EOF
5909
5910     compile_object
5911
5912     cat > $TMPCXX <<EOF
5913 extern "C" {
5914    int c_function(void);
5915 }
5916 int c_function(void) { return 42; }
5917 EOF
5918
5919     update_cxxflags
5920
5921     if do_cxx $CXXFLAGS $CONFIGURE_CXXFLAGS $QEMU_CXXFLAGS -o $TMPE $TMPCXX $TMPO $QEMU_LDFLAGS; then
5922         # C++ compiler $cxx works ok with C compiler $cc
5923         :
5924     else
5925         echo "C++ compiler $cxx does not work with C compiler $cc"
5926         echo "Disabling C++ specific optional code"
5927         cxx=
5928     fi
5929 else
5930     echo "No C++ compiler available; disabling C++ specific optional code"
5931     cxx=
5932 fi
5933
5934 if test $git_update = 'yes' ; then
5935     (cd "${source_path}" && GIT="$git" "./scripts/git-submodule.sh" update "$git_submodules")
5936 fi
5937
5938 config_host_mak="config-host.mak"
5939
5940 echo "# Automatically generated by configure - do not modify" > $config_host_mak
5941 echo >> $config_host_mak
5942
5943 echo all: >> $config_host_mak
5944 echo "prefix=$prefix" >> $config_host_mak
5945 echo "bindir=$bindir" >> $config_host_mak
5946 echo "libdir=$libdir" >> $config_host_mak
5947 echo "libexecdir=$libexecdir" >> $config_host_mak
5948 echo "includedir=$includedir" >> $config_host_mak
5949 echo "sysconfdir=$sysconfdir" >> $config_host_mak
5950 echo "qemu_confdir=$qemu_confdir" >> $config_host_mak
5951 echo "qemu_datadir=$qemu_datadir" >> $config_host_mak
5952 echo "qemu_firmwarepath=$firmwarepath" >> $config_host_mak
5953 echo "qemu_moddir=$qemu_moddir" >> $config_host_mak
5954 if test "$mingw32" = "no" ; then
5955   echo "qemu_localstatedir=$local_statedir" >> $config_host_mak
5956 fi
5957 echo "qemu_helperdir=$libexecdir" >> $config_host_mak
5958 echo "qemu_localedir=$qemu_localedir" >> $config_host_mak
5959 echo "qemu_icondir=$qemu_icondir" >> $config_host_mak
5960 echo "qemu_desktopdir=$qemu_desktopdir" >> $config_host_mak
5961 echo "GIT=$git" >> $config_host_mak
5962 echo "GIT_SUBMODULES=$git_submodules" >> $config_host_mak
5963 echo "GIT_UPDATE=$git_update" >> $config_host_mak
5964
5965 echo "ARCH=$ARCH" >> $config_host_mak
5966
5967 if test "$default_devices" = "yes" ; then
5968   echo "CONFIG_MINIKCONF_MODE=--defconfig" >> $config_host_mak
5969 else
5970   echo "CONFIG_MINIKCONF_MODE=--allnoconfig" >> $config_host_mak
5971 fi
5972 if test "$debug_tcg" = "yes" ; then
5973   echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
5974 fi
5975 if test "$strip_opt" = "yes" ; then
5976   echo "STRIP=${strip}" >> $config_host_mak
5977 fi
5978 if test "$bigendian" = "yes" ; then
5979   echo "HOST_WORDS_BIGENDIAN=y" >> $config_host_mak
5980 fi
5981 if test "$mingw32" = "yes" ; then
5982   echo "CONFIG_WIN32=y" >> $config_host_mak
5983   rc_version=$(cat $source_path/VERSION)
5984   version_major=${rc_version%%.*}
5985   rc_version=${rc_version#*.}
5986   version_minor=${rc_version%%.*}
5987   rc_version=${rc_version#*.}
5988   version_subminor=${rc_version%%.*}
5989   version_micro=0
5990   echo "CONFIG_FILEVERSION=$version_major,$version_minor,$version_subminor,$version_micro" >> $config_host_mak
5991   echo "CONFIG_PRODUCTVERSION=$version_major,$version_minor,$version_subminor,$version_micro" >> $config_host_mak
5992   if test "$guest_agent_with_vss" = "yes" ; then
5993     echo "CONFIG_QGA_VSS=y" >> $config_host_mak
5994     echo "QGA_VSS_PROVIDER=$qga_vss_provider" >> $config_host_mak
5995     echo "WIN_SDK=\"$win_sdk\"" >> $config_host_mak
5996   fi
5997   if test "$guest_agent_ntddscsi" = "yes" ; then
5998     echo "CONFIG_QGA_NTDDSCSI=y" >> $config_host_mak
5999   fi
6000   if test "$guest_agent_msi" = "yes"; then
6001     echo "CONFIG_QGA_MSI=y" >> $config_host_mak
6002     echo "QEMU_GA_MSI_MINGW_DLL_PATH=${QEMU_GA_MSI_MINGW_DLL_PATH}" >> $config_host_mak
6003     echo "QEMU_GA_MSI_WITH_VSS=${QEMU_GA_MSI_WITH_VSS}" >> $config_host_mak
6004     echo "QEMU_GA_MSI_ARCH=${QEMU_GA_MSI_ARCH}" >> $config_host_mak
6005     echo "QEMU_GA_MANUFACTURER=${QEMU_GA_MANUFACTURER}" >> $config_host_mak
6006     echo "QEMU_GA_DISTRO=${QEMU_GA_DISTRO}" >> $config_host_mak
6007     echo "QEMU_GA_VERSION=${QEMU_GA_VERSION}" >> $config_host_mak
6008   fi
6009 else
6010   echo "CONFIG_POSIX=y" >> $config_host_mak
6011 fi
6012
6013 if test "$linux" = "yes" ; then
6014   echo "CONFIG_LINUX=y" >> $config_host_mak
6015 fi
6016
6017 if test "$darwin" = "yes" ; then
6018   echo "CONFIG_DARWIN=y" >> $config_host_mak
6019 fi
6020
6021 if test "$solaris" = "yes" ; then
6022   echo "CONFIG_SOLARIS=y" >> $config_host_mak
6023 fi
6024 if test "$haiku" = "yes" ; then
6025   echo "CONFIG_HAIKU=y" >> $config_host_mak
6026 fi
6027 if test "$static" = "yes" ; then
6028   echo "CONFIG_STATIC=y" >> $config_host_mak
6029 fi
6030 if test "$profiler" = "yes" ; then
6031   echo "CONFIG_PROFILER=y" >> $config_host_mak
6032 fi
6033 if test "$want_tools" = "yes" ; then
6034   echo "CONFIG_TOOLS=y" >> $config_host_mak
6035 fi
6036 if test "$guest_agent" = "yes" ; then
6037   echo "CONFIG_GUEST_AGENT=y" >> $config_host_mak
6038 fi
6039 echo "CONFIG_SMBD_COMMAND=\"$smbd\"" >> $config_host_mak
6040 if test "$vde" = "yes" ; then
6041   echo "CONFIG_VDE=y" >> $config_host_mak
6042   echo "VDE_LIBS=$vde_libs" >> $config_host_mak
6043 fi
6044 if test "$netmap" = "yes" ; then
6045   echo "CONFIG_NETMAP=y" >> $config_host_mak
6046 fi
6047 if test "$l2tpv3" = "yes" ; then
6048   echo "CONFIG_L2TPV3=y" >> $config_host_mak
6049 fi
6050 if test "$gprof" = "yes" ; then
6051   echo "CONFIG_GPROF=y" >> $config_host_mak
6052 fi
6053 if test "$cap_ng" = "yes" ; then
6054   echo "CONFIG_LIBCAP_NG=y" >> $config_host_mak
6055   echo "LIBCAP_NG_LIBS=$cap_libs" >> $config_host_mak
6056 fi
6057 echo "CONFIG_AUDIO_DRIVERS=$audio_drv_list" >> $config_host_mak
6058 for drv in $audio_drv_list; do
6059     def=CONFIG_AUDIO_$(echo $drv | LC_ALL=C tr '[a-z]' '[A-Z]')
6060     echo "$def=y" >> $config_host_mak
6061 done
6062 if test "$alsa" = "yes" ; then
6063     echo "CONFIG_ALSA=y" >> $config_host_mak
6064 fi
6065 echo "ALSA_LIBS=$alsa_libs" >> $config_host_mak
6066 echo "ALSA_CFLAGS=$alsa_cflags" >> $config_host_mak
6067 if test "$libpulse" = "yes" ; then
6068     echo "CONFIG_LIBPULSE=y" >> $config_host_mak
6069 fi
6070 echo "PULSE_LIBS=$pulse_libs" >> $config_host_mak
6071 echo "PULSE_CFLAGS=$pulse_cflags" >> $config_host_mak
6072 echo "COREAUDIO_LIBS=$coreaudio_libs" >> $config_host_mak
6073 echo "DSOUND_LIBS=$dsound_libs" >> $config_host_mak
6074 echo "OSS_LIBS=$oss_libs" >> $config_host_mak
6075 if test "$libjack" = "yes" ; then
6076     echo "CONFIG_LIBJACK=y" >> $config_host_mak
6077 fi
6078 echo "JACK_LIBS=$jack_libs" >> $config_host_mak
6079 if test "$audio_win_int" = "yes" ; then
6080   echo "CONFIG_AUDIO_WIN_INT=y" >> $config_host_mak
6081 fi
6082 echo "CONFIG_BDRV_RW_WHITELIST=$block_drv_rw_whitelist" >> $config_host_mak
6083 echo "CONFIG_BDRV_RO_WHITELIST=$block_drv_ro_whitelist" >> $config_host_mak
6084 if test "$xfs" = "yes" ; then
6085   echo "CONFIG_XFS=y" >> $config_host_mak
6086 fi
6087 qemu_version=$(head $source_path/VERSION)
6088 echo "PKGVERSION=$pkgversion" >>$config_host_mak
6089 echo "SRC_PATH=$source_path" >> $config_host_mak
6090 echo "TARGET_DIRS=$target_list" >> $config_host_mak
6091 if [ "$docs" = "yes" ] ; then
6092   echo "BUILD_DOCS=yes" >> $config_host_mak
6093 fi
6094 if test "$modules" = "yes"; then
6095   # $shacmd can generate a hash started with digit, which the compiler doesn't
6096   # like as an symbol. So prefix it with an underscore
6097   echo "CONFIG_STAMP=_$( (echo $qemu_version; echo $pkgversion; cat $0) | $shacmd - | cut -f1 -d\ )" >> $config_host_mak
6098   echo "CONFIG_MODULES=y" >> $config_host_mak
6099 fi
6100 if test "$module_upgrades" = "yes"; then
6101   echo "CONFIG_MODULE_UPGRADES=y" >> $config_host_mak
6102 fi
6103 if test "$have_x11" = "yes" && test "$need_x11" = "yes"; then
6104   echo "CONFIG_X11=y" >> $config_host_mak
6105   echo "X11_CFLAGS=$x11_cflags" >> $config_host_mak
6106   echo "X11_LIBS=$x11_libs" >> $config_host_mak
6107 fi
6108 if test "$pipe2" = "yes" ; then
6109   echo "CONFIG_PIPE2=y" >> $config_host_mak
6110 fi
6111 if test "$accept4" = "yes" ; then
6112   echo "CONFIG_ACCEPT4=y" >> $config_host_mak
6113 fi
6114 if test "$splice" = "yes" ; then
6115   echo "CONFIG_SPLICE=y" >> $config_host_mak
6116 fi
6117 if test "$eventfd" = "yes" ; then
6118   echo "CONFIG_EVENTFD=y" >> $config_host_mak
6119 fi
6120 if test "$memfd" = "yes" ; then
6121   echo "CONFIG_MEMFD=y" >> $config_host_mak
6122 fi
6123 if test "$have_usbfs" = "yes" ; then
6124   echo "CONFIG_USBFS=y" >> $config_host_mak
6125 fi
6126 if test "$fallocate" = "yes" ; then
6127   echo "CONFIG_FALLOCATE=y" >> $config_host_mak
6128 fi
6129 if test "$fallocate_punch_hole" = "yes" ; then
6130   echo "CONFIG_FALLOCATE_PUNCH_HOLE=y" >> $config_host_mak
6131 fi
6132 if test "$fallocate_zero_range" = "yes" ; then
6133   echo "CONFIG_FALLOCATE_ZERO_RANGE=y" >> $config_host_mak
6134 fi
6135 if test "$posix_fallocate" = "yes" ; then
6136   echo "CONFIG_POSIX_FALLOCATE=y" >> $config_host_mak
6137 fi
6138 if test "$sync_file_range" = "yes" ; then
6139   echo "CONFIG_SYNC_FILE_RANGE=y" >> $config_host_mak
6140 fi
6141 if test "$fiemap" = "yes" ; then
6142   echo "CONFIG_FIEMAP=y" >> $config_host_mak
6143 fi
6144 if test "$dup3" = "yes" ; then
6145   echo "CONFIG_DUP3=y" >> $config_host_mak
6146 fi
6147 if test "$ppoll" = "yes" ; then
6148   echo "CONFIG_PPOLL=y" >> $config_host_mak
6149 fi
6150 if test "$prctl_pr_set_timerslack" = "yes" ; then
6151   echo "CONFIG_PRCTL_PR_SET_TIMERSLACK=y" >> $config_host_mak
6152 fi
6153 if test "$epoll" = "yes" ; then
6154   echo "CONFIG_EPOLL=y" >> $config_host_mak
6155 fi
6156 if test "$epoll_create1" = "yes" ; then
6157   echo "CONFIG_EPOLL_CREATE1=y" >> $config_host_mak
6158 fi
6159 if test "$sendfile" = "yes" ; then
6160   echo "CONFIG_SENDFILE=y" >> $config_host_mak
6161 fi
6162 if test "$timerfd" = "yes" ; then
6163   echo "CONFIG_TIMERFD=y" >> $config_host_mak
6164 fi
6165 if test "$setns" = "yes" ; then
6166   echo "CONFIG_SETNS=y" >> $config_host_mak
6167 fi
6168 if test "$clock_adjtime" = "yes" ; then
6169   echo "CONFIG_CLOCK_ADJTIME=y" >> $config_host_mak
6170 fi
6171 if test "$syncfs" = "yes" ; then
6172   echo "CONFIG_SYNCFS=y" >> $config_host_mak
6173 fi
6174 if test "$kcov" = "yes" ; then
6175   echo "CONFIG_KCOV=y" >> $config_host_mak
6176 fi
6177 if test "$btrfs" = "yes" ; then
6178   echo "CONFIG_BTRFS=y" >> $config_host_mak
6179 fi
6180 if test "$inotify" = "yes" ; then
6181   echo "CONFIG_INOTIFY=y" >> $config_host_mak
6182 fi
6183 if test "$inotify1" = "yes" ; then
6184   echo "CONFIG_INOTIFY1=y" >> $config_host_mak
6185 fi
6186 if test "$sem_timedwait" = "yes" ; then
6187   echo "CONFIG_SEM_TIMEDWAIT=y" >> $config_host_mak
6188 fi
6189 if test "$strchrnul" = "yes" ; then
6190   echo "HAVE_STRCHRNUL=y" >> $config_host_mak
6191 fi
6192 if test "$st_atim" = "yes" ; then
6193   echo "HAVE_STRUCT_STAT_ST_ATIM=y" >> $config_host_mak
6194 fi
6195 if test "$byteswap_h" = "yes" ; then
6196   echo "CONFIG_BYTESWAP_H=y" >> $config_host_mak
6197 fi
6198 if test "$bswap_h" = "yes" ; then
6199   echo "CONFIG_MACHINE_BSWAP_H=y" >> $config_host_mak
6200 fi
6201 if test "$curl" = "yes" ; then
6202   echo "CONFIG_CURL=y" >> $config_host_mak
6203   echo "CURL_CFLAGS=$curl_cflags" >> $config_host_mak
6204   echo "CURL_LIBS=$curl_libs" >> $config_host_mak
6205 fi
6206 if test "$brlapi" = "yes" ; then
6207   echo "CONFIG_BRLAPI=y" >> $config_host_mak
6208   echo "BRLAPI_LIBS=$brlapi_libs" >> $config_host_mak
6209 fi
6210 if test "$gtk" = "yes" ; then
6211   echo "CONFIG_GTK=y" >> $config_host_mak
6212   echo "GTK_CFLAGS=$gtk_cflags" >> $config_host_mak
6213   echo "GTK_LIBS=$gtk_libs" >> $config_host_mak
6214   if test "$gtk_gl" = "yes" ; then
6215     echo "CONFIG_GTK_GL=y" >> $config_host_mak
6216   fi
6217 fi
6218 if test "$gio" = "yes" ; then
6219     echo "CONFIG_GIO=y" >> $config_host_mak
6220     echo "GIO_CFLAGS=$gio_cflags" >> $config_host_mak
6221     echo "GIO_LIBS=$gio_libs" >> $config_host_mak
6222     echo "GDBUS_CODEGEN=$gdbus_codegen" >> $config_host_mak
6223 fi
6224 echo "CONFIG_TLS_PRIORITY=\"$tls_priority\"" >> $config_host_mak
6225 if test "$gnutls" = "yes" ; then
6226   echo "CONFIG_GNUTLS=y" >> $config_host_mak
6227   echo "GNUTLS_CFLAGS=$gnutls_cflags" >> $config_host_mak
6228   echo "GNUTLS_LIBS=$gnutls_libs" >> $config_host_mak
6229 fi
6230 if test "$gcrypt" = "yes" ; then
6231   echo "CONFIG_GCRYPT=y" >> $config_host_mak
6232   if test "$gcrypt_hmac" = "yes" ; then
6233     echo "CONFIG_GCRYPT_HMAC=y" >> $config_host_mak
6234   fi
6235   echo "GCRYPT_CFLAGS=$gcrypt_cflags" >> $config_host_mak
6236   echo "GCRYPT_LIBS=$gcrypt_libs" >> $config_host_mak
6237 fi
6238 if test "$nettle" = "yes" ; then
6239   echo "CONFIG_NETTLE=y" >> $config_host_mak
6240   echo "CONFIG_NETTLE_VERSION_MAJOR=${nettle_version%%.*}" >> $config_host_mak
6241   echo "NETTLE_CFLAGS=$nettle_cflags" >> $config_host_mak
6242   echo "NETTLE_LIBS=$nettle_libs" >> $config_host_mak
6243 fi
6244 if test "$qemu_private_xts" = "yes" ; then
6245   echo "CONFIG_QEMU_PRIVATE_XTS=y" >> $config_host_mak
6246 fi
6247 if test "$tasn1" = "yes" ; then
6248   echo "CONFIG_TASN1=y" >> $config_host_mak
6249 fi
6250 if test "$auth_pam" = "yes" ; then
6251     echo "CONFIG_AUTH_PAM=y" >> $config_host_mak
6252 fi
6253 if test "$have_ifaddrs_h" = "yes" ; then
6254     echo "HAVE_IFADDRS_H=y" >> $config_host_mak
6255 fi
6256 if test "$have_drm_h" = "yes" ; then
6257   echo "HAVE_DRM_H=y" >> $config_host_mak
6258 fi
6259 if test "$have_broken_size_max" = "yes" ; then
6260     echo "HAVE_BROKEN_SIZE_MAX=y" >> $config_host_mak
6261 fi
6262 if test "$have_openpty" = "yes" ; then
6263     echo "HAVE_OPENPTY=y" >> $config_host_mak
6264 fi
6265 if test "$have_sys_signal_h" = "yes" ; then
6266     echo "HAVE_SYS_SIGNAL_H=y" >> $config_host_mak
6267 fi
6268
6269 # Work around a system header bug with some kernel/XFS header
6270 # versions where they both try to define 'struct fsxattr':
6271 # xfs headers will not try to redefine structs from linux headers
6272 # if this macro is set.
6273 if test "$have_fsxattr" = "yes" ; then
6274     echo "HAVE_FSXATTR=y" >> $config_host_mak
6275 fi
6276 if test "$have_copy_file_range" = "yes" ; then
6277     echo "HAVE_COPY_FILE_RANGE=y" >> $config_host_mak
6278 fi
6279 if test "$vte" = "yes" ; then
6280   echo "CONFIG_VTE=y" >> $config_host_mak
6281   echo "VTE_CFLAGS=$vte_cflags" >> $config_host_mak
6282   echo "VTE_LIBS=$vte_libs" >> $config_host_mak
6283 fi
6284 if test "$virglrenderer" = "yes" ; then
6285   echo "CONFIG_VIRGL=y" >> $config_host_mak
6286   echo "VIRGL_CFLAGS=$virgl_cflags" >> $config_host_mak
6287   echo "VIRGL_LIBS=$virgl_libs" >> $config_host_mak
6288 fi
6289 if test "$xen" = "enabled" ; then
6290   echo "CONFIG_XEN_BACKEND=y" >> $config_host_mak
6291   echo "CONFIG_XEN_CTRL_INTERFACE_VERSION=$xen_ctrl_version" >> $config_host_mak
6292   echo "XEN_CFLAGS=$xen_cflags" >> $config_host_mak
6293   echo "XEN_LIBS=$xen_libs" >> $config_host_mak
6294 fi
6295 if test "$linux_aio" = "yes" ; then
6296   echo "CONFIG_LINUX_AIO=y" >> $config_host_mak
6297 fi
6298 if test "$linux_io_uring" = "yes" ; then
6299   echo "CONFIG_LINUX_IO_URING=y" >> $config_host_mak
6300   echo "LINUX_IO_URING_CFLAGS=$linux_io_uring_cflags" >> $config_host_mak
6301   echo "LINUX_IO_URING_LIBS=$linux_io_uring_libs" >> $config_host_mak
6302 fi
6303 if test "$attr" = "yes" ; then
6304   echo "CONFIG_ATTR=y" >> $config_host_mak
6305   echo "LIBATTR_LIBS=$libattr_libs" >> $config_host_mak
6306 fi
6307 if test "$libattr" = "yes" ; then
6308   echo "CONFIG_LIBATTR=y" >> $config_host_mak
6309 fi
6310 if test "$virtfs" = "yes" ; then
6311   echo "CONFIG_VIRTFS=y" >> $config_host_mak
6312 fi
6313 if test "$vhost_scsi" = "yes" ; then
6314   echo "CONFIG_VHOST_SCSI=y" >> $config_host_mak
6315 fi
6316 if test "$vhost_net" = "yes" ; then
6317   echo "CONFIG_VHOST_NET=y" >> $config_host_mak
6318 fi
6319 if test "$vhost_net_user" = "yes" ; then
6320   echo "CONFIG_VHOST_NET_USER=y" >> $config_host_mak
6321 fi
6322 if test "$vhost_net_vdpa" = "yes" ; then
6323   echo "CONFIG_VHOST_NET_VDPA=y" >> $config_host_mak
6324 fi
6325 if test "$vhost_crypto" = "yes" ; then
6326   echo "CONFIG_VHOST_CRYPTO=y" >> $config_host_mak
6327 fi
6328 if test "$vhost_vsock" = "yes" ; then
6329   echo "CONFIG_VHOST_VSOCK=y" >> $config_host_mak
6330   if test "$vhost_user" = "yes" ; then
6331     echo "CONFIG_VHOST_USER_VSOCK=y" >> $config_host_mak
6332   fi
6333 fi
6334 if test "$vhost_kernel" = "yes" ; then
6335   echo "CONFIG_VHOST_KERNEL=y" >> $config_host_mak
6336 fi
6337 if test "$vhost_user" = "yes" ; then
6338   echo "CONFIG_VHOST_USER=y" >> $config_host_mak
6339 fi
6340 if test "$vhost_vdpa" = "yes" ; then
6341   echo "CONFIG_VHOST_VDPA=y" >> $config_host_mak
6342 fi
6343 if test "$vhost_user_fs" = "yes" ; then
6344   echo "CONFIG_VHOST_USER_FS=y" >> $config_host_mak
6345 fi
6346 if test "$blobs" = "yes" ; then
6347   echo "INSTALL_BLOBS=yes" >> $config_host_mak
6348 fi
6349 if test "$iovec" = "yes" ; then
6350   echo "CONFIG_IOVEC=y" >> $config_host_mak
6351 fi
6352 if test "$preadv" = "yes" ; then
6353   echo "CONFIG_PREADV=y" >> $config_host_mak
6354 fi
6355 if test "$membarrier" = "yes" ; then
6356   echo "CONFIG_MEMBARRIER=y" >> $config_host_mak
6357 fi
6358 if test "$signalfd" = "yes" ; then
6359   echo "CONFIG_SIGNALFD=y" >> $config_host_mak
6360 fi
6361 if test "$optreset" = "yes" ; then
6362   echo "HAVE_OPTRESET=y" >> $config_host_mak
6363 fi
6364 if test "$tcg" = "enabled"; then
6365   if test "$tcg_interpreter" = "yes" ; then
6366     echo "CONFIG_TCG_INTERPRETER=y" >> $config_host_mak
6367   fi
6368 fi
6369 if test "$fdatasync" = "yes" ; then
6370   echo "CONFIG_FDATASYNC=y" >> $config_host_mak
6371 fi
6372 if test "$madvise" = "yes" ; then
6373   echo "CONFIG_MADVISE=y" >> $config_host_mak
6374 fi
6375 if test "$posix_madvise" = "yes" ; then
6376   echo "CONFIG_POSIX_MADVISE=y" >> $config_host_mak
6377 fi
6378 if test "$posix_memalign" = "yes" ; then
6379   echo "CONFIG_POSIX_MEMALIGN=y" >> $config_host_mak
6380 fi
6381 if test "$spice" = "yes" ; then
6382   echo "CONFIG_SPICE=y" >> $config_host_mak
6383   echo "SPICE_CFLAGS=$spice_cflags" >> $config_host_mak
6384   echo "SPICE_LIBS=$spice_libs" >> $config_host_mak
6385 fi
6386
6387 if test "$smartcard" = "yes" ; then
6388   echo "CONFIG_SMARTCARD=y" >> $config_host_mak
6389   echo "SMARTCARD_CFLAGS=$libcacard_cflags" >> $config_host_mak
6390   echo "SMARTCARD_LIBS=$libcacard_libs" >> $config_host_mak
6391 fi
6392
6393 if test "$libusb" = "yes" ; then
6394   echo "CONFIG_USB_LIBUSB=y" >> $config_host_mak
6395   echo "LIBUSB_CFLAGS=$libusb_cflags" >> $config_host_mak
6396   echo "LIBUSB_LIBS=$libusb_libs" >> $config_host_mak
6397 fi
6398
6399 if test "$usb_redir" = "yes" ; then
6400   echo "CONFIG_USB_REDIR=y" >> $config_host_mak
6401   echo "USB_REDIR_CFLAGS=$usb_redir_cflags" >> $config_host_mak
6402   echo "USB_REDIR_LIBS=$usb_redir_libs" >> $config_host_mak
6403 fi
6404
6405 if test "$opengl" = "yes" ; then
6406   echo "CONFIG_OPENGL=y" >> $config_host_mak
6407   echo "OPENGL_CFLAGS=$opengl_cflags" >> $config_host_mak
6408   echo "OPENGL_LIBS=$opengl_libs" >> $config_host_mak
6409   if test "$opengl_dmabuf" = "yes" ; then
6410     echo "CONFIG_OPENGL_DMABUF=y" >> $config_host_mak
6411   fi
6412 fi
6413
6414 if test "$gbm" = "yes" ; then
6415     echo "CONFIG_GBM=y" >> $config_host_mak
6416     echo "GBM_LIBS=$gbm_libs" >> $config_host_mak
6417     echo "GBM_CFLAGS=$gbm_cflags" >> $config_host_mak
6418 fi
6419
6420
6421 if test "$avx2_opt" = "yes" ; then
6422   echo "CONFIG_AVX2_OPT=y" >> $config_host_mak
6423 fi
6424
6425 if test "$avx512f_opt" = "yes" ; then
6426   echo "CONFIG_AVX512F_OPT=y" >> $config_host_mak
6427 fi
6428
6429 if test "$lzo" = "yes" ; then
6430   echo "CONFIG_LZO=y" >> $config_host_mak
6431   echo "LZO_LIBS=$lzo_libs" >> $config_host_mak
6432 fi
6433
6434 if test "$snappy" = "yes" ; then
6435   echo "CONFIG_SNAPPY=y" >> $config_host_mak
6436   echo "SNAPPY_LIBS=$snappy_libs" >> $config_host_mak
6437 fi
6438
6439 if test "$bzip2" = "yes" ; then
6440   echo "CONFIG_BZIP2=y" >> $config_host_mak
6441   echo "BZIP2_LIBS=-lbz2" >> $config_host_mak
6442 fi
6443
6444 if test "$lzfse" = "yes" ; then
6445   echo "CONFIG_LZFSE=y" >> $config_host_mak
6446   echo "LZFSE_LIBS=-llzfse" >> $config_host_mak
6447 fi
6448
6449 if test "$zstd" = "yes" ; then
6450   echo "CONFIG_ZSTD=y" >> $config_host_mak
6451   echo "ZSTD_CFLAGS=$zstd_cflags" >> $config_host_mak
6452   echo "ZSTD_LIBS=$zstd_libs" >> $config_host_mak
6453 fi
6454
6455 if test "$libiscsi" = "yes" ; then
6456   echo "CONFIG_LIBISCSI=y" >> $config_host_mak
6457   echo "LIBISCSI_CFLAGS=$libiscsi_cflags" >> $config_host_mak
6458   echo "LIBISCSI_LIBS=$libiscsi_libs" >> $config_host_mak
6459 fi
6460
6461 if test "$libnfs" = "yes" ; then
6462   echo "CONFIG_LIBNFS=y" >> $config_host_mak
6463   echo "LIBNFS_LIBS=$libnfs_libs" >> $config_host_mak
6464 fi
6465
6466 if test "$seccomp" = "yes"; then
6467   echo "CONFIG_SECCOMP=y" >> $config_host_mak
6468   echo "SECCOMP_CFLAGS=$seccomp_cflags" >> $config_host_mak
6469   echo "SECCOMP_LIBS=$seccomp_libs" >> $config_host_mak
6470 fi
6471
6472 # XXX: suppress that
6473 if [ "$bsd" = "yes" ] ; then
6474   echo "CONFIG_BSD=y" >> $config_host_mak
6475 fi
6476
6477 if test "$qom_cast_debug" = "yes" ; then
6478   echo "CONFIG_QOM_CAST_DEBUG=y" >> $config_host_mak
6479 fi
6480 if test "$rbd" = "yes" ; then
6481   echo "CONFIG_RBD=y" >> $config_host_mak
6482   echo "RBD_LIBS=$rbd_libs" >> $config_host_mak
6483 fi
6484
6485 echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
6486 if test "$coroutine_pool" = "yes" ; then
6487   echo "CONFIG_COROUTINE_POOL=1" >> $config_host_mak
6488 else
6489   echo "CONFIG_COROUTINE_POOL=0" >> $config_host_mak
6490 fi
6491
6492 if test "$debug_stack_usage" = "yes" ; then
6493   echo "CONFIG_DEBUG_STACK_USAGE=y" >> $config_host_mak
6494 fi
6495
6496 if test "$crypto_afalg" = "yes" ; then
6497   echo "CONFIG_AF_ALG=y" >> $config_host_mak
6498 fi
6499
6500 if test "$open_by_handle_at" = "yes" ; then
6501   echo "CONFIG_OPEN_BY_HANDLE=y" >> $config_host_mak
6502 fi
6503
6504 if test "$linux_magic_h" = "yes" ; then
6505   echo "CONFIG_LINUX_MAGIC_H=y" >> $config_host_mak
6506 fi
6507
6508 if test "$valgrind_h" = "yes" ; then
6509   echo "CONFIG_VALGRIND_H=y" >> $config_host_mak
6510 fi
6511
6512 if test "$have_asan_iface_fiber" = "yes" ; then
6513     echo "CONFIG_ASAN_IFACE_FIBER=y" >> $config_host_mak
6514 fi
6515
6516 if test "$have_tsan" = "yes" && test "$have_tsan_iface_fiber" = "yes" ; then
6517     echo "CONFIG_TSAN=y" >> $config_host_mak
6518 fi
6519
6520 if test "$has_environ" = "yes" ; then
6521   echo "CONFIG_HAS_ENVIRON=y" >> $config_host_mak
6522 fi
6523
6524 if test "$cpuid_h" = "yes" ; then
6525   echo "CONFIG_CPUID_H=y" >> $config_host_mak
6526 fi
6527
6528 if test "$int128" = "yes" ; then
6529   echo "CONFIG_INT128=y" >> $config_host_mak
6530 fi
6531
6532 if test "$atomic128" = "yes" ; then
6533   echo "CONFIG_ATOMIC128=y" >> $config_host_mak
6534 fi
6535
6536 if test "$cmpxchg128" = "yes" ; then
6537   echo "CONFIG_CMPXCHG128=y" >> $config_host_mak
6538 fi
6539
6540 if test "$atomic64" = "yes" ; then
6541   echo "CONFIG_ATOMIC64=y" >> $config_host_mak
6542 fi
6543
6544 if test "$attralias" = "yes" ; then
6545   echo "CONFIG_ATTRIBUTE_ALIAS=y" >> $config_host_mak
6546 fi
6547
6548 if test "$getauxval" = "yes" ; then
6549   echo "CONFIG_GETAUXVAL=y" >> $config_host_mak
6550 fi
6551
6552 if test "$glusterfs" = "yes" ; then
6553   echo "CONFIG_GLUSTERFS=y" >> $config_host_mak
6554   echo "GLUSTERFS_CFLAGS=$glusterfs_cflags" >> $config_host_mak
6555   echo "GLUSTERFS_LIBS=$glusterfs_libs" >> $config_host_mak
6556 fi
6557
6558 if test "$glusterfs_xlator_opt" = "yes" ; then
6559   echo "CONFIG_GLUSTERFS_XLATOR_OPT=y" >> $config_host_mak
6560 fi
6561
6562 if test "$glusterfs_discard" = "yes" ; then
6563   echo "CONFIG_GLUSTERFS_DISCARD=y" >> $config_host_mak
6564 fi
6565
6566 if test "$glusterfs_fallocate" = "yes" ; then
6567   echo "CONFIG_GLUSTERFS_FALLOCATE=y" >> $config_host_mak
6568 fi
6569
6570 if test "$glusterfs_zerofill" = "yes" ; then
6571   echo "CONFIG_GLUSTERFS_ZEROFILL=y" >> $config_host_mak
6572 fi
6573
6574 if test "$glusterfs_ftruncate_has_stat" = "yes" ; then
6575   echo "CONFIG_GLUSTERFS_FTRUNCATE_HAS_STAT=y" >> $config_host_mak
6576 fi
6577
6578 if test "$glusterfs_iocb_has_stat" = "yes" ; then
6579   echo "CONFIG_GLUSTERFS_IOCB_HAS_STAT=y" >> $config_host_mak
6580 fi
6581
6582 if test "$libssh" = "yes" ; then
6583   echo "CONFIG_LIBSSH=y" >> $config_host_mak
6584   echo "LIBSSH_CFLAGS=$libssh_cflags" >> $config_host_mak
6585   echo "LIBSSH_LIBS=$libssh_libs" >> $config_host_mak
6586 fi
6587
6588 if test "$live_block_migration" = "yes" ; then
6589   echo "CONFIG_LIVE_BLOCK_MIGRATION=y" >> $config_host_mak
6590 fi
6591
6592 if test "$tpm" = "yes"; then
6593   echo 'CONFIG_TPM=y' >> $config_host_mak
6594 fi
6595
6596 echo "TRACE_BACKENDS=$trace_backends" >> $config_host_mak
6597 if have_backend "nop"; then
6598   echo "CONFIG_TRACE_NOP=y" >> $config_host_mak
6599 fi
6600 if have_backend "simple"; then
6601   echo "CONFIG_TRACE_SIMPLE=y" >> $config_host_mak
6602   # Set the appropriate trace file.
6603   trace_file="\"$trace_file-\" FMT_pid"
6604 fi
6605 if have_backend "log"; then
6606   echo "CONFIG_TRACE_LOG=y" >> $config_host_mak
6607 fi
6608 if have_backend "ust"; then
6609   echo "CONFIG_TRACE_UST=y" >> $config_host_mak
6610   echo "LTTNG_UST_LIBS=$lttng_ust_libs" >> $config_host_mak
6611   echo "URCU_BP_LIBS=$urcu_bp_libs" >> $config_host_mak
6612 fi
6613 if have_backend "dtrace"; then
6614   echo "CONFIG_TRACE_DTRACE=y" >> $config_host_mak
6615   if test "$trace_backend_stap" = "yes" ; then
6616     echo "CONFIG_TRACE_SYSTEMTAP=y" >> $config_host_mak
6617   fi
6618 fi
6619 if have_backend "ftrace"; then
6620   if test "$linux" = "yes" ; then
6621     echo "CONFIG_TRACE_FTRACE=y" >> $config_host_mak
6622   else
6623     feature_not_found "ftrace(trace backend)" "ftrace requires Linux"
6624   fi
6625 fi
6626 if have_backend "syslog"; then
6627   if test "$posix_syslog" = "yes" ; then
6628     echo "CONFIG_TRACE_SYSLOG=y" >> $config_host_mak
6629   else
6630     feature_not_found "syslog(trace backend)" "syslog not available"
6631   fi
6632 fi
6633 echo "CONFIG_TRACE_FILE=$trace_file" >> $config_host_mak
6634
6635 if test "$rdma" = "yes" ; then
6636   echo "CONFIG_RDMA=y" >> $config_host_mak
6637   echo "RDMA_LIBS=$rdma_libs" >> $config_host_mak
6638 fi
6639
6640 if test "$pvrdma" = "yes" ; then
6641   echo "CONFIG_PVRDMA=y" >> $config_host_mak
6642 fi
6643
6644 if test "$have_rtnetlink" = "yes" ; then
6645   echo "CONFIG_RTNETLINK=y" >> $config_host_mak
6646 fi
6647
6648 if test "$libxml2" = "yes" ; then
6649   echo "CONFIG_LIBXML2=y" >> $config_host_mak
6650   echo "LIBXML2_CFLAGS=$libxml2_cflags" >> $config_host_mak
6651   echo "LIBXML2_LIBS=$libxml2_libs" >> $config_host_mak
6652 fi
6653
6654 if test "$replication" = "yes" ; then
6655   echo "CONFIG_REPLICATION=y" >> $config_host_mak
6656 fi
6657
6658 if test "$have_af_vsock" = "yes" ; then
6659   echo "CONFIG_AF_VSOCK=y" >> $config_host_mak
6660 fi
6661
6662 if test "$have_sysmacros" = "yes" ; then
6663   echo "CONFIG_SYSMACROS=y" >> $config_host_mak
6664 fi
6665
6666 if test "$have_static_assert" = "yes" ; then
6667   echo "CONFIG_STATIC_ASSERT=y" >> $config_host_mak
6668 fi
6669
6670 if test "$have_utmpx" = "yes" ; then
6671   echo "HAVE_UTMPX=y" >> $config_host_mak
6672 fi
6673 if test "$have_getrandom" = "yes" ; then
6674   echo "CONFIG_GETRANDOM=y" >> $config_host_mak
6675 fi
6676 if test "$ivshmem" = "yes" ; then
6677   echo "CONFIG_IVSHMEM=y" >> $config_host_mak
6678 fi
6679 if test "$debug_mutex" = "yes" ; then
6680   echo "CONFIG_DEBUG_MUTEX=y" >> $config_host_mak
6681 fi
6682
6683 # Hold two types of flag:
6684 #   CONFIG_THREAD_SETNAME_BYTHREAD  - we've got a way of setting the name on
6685 #                                     a thread we have a handle to
6686 #   CONFIG_PTHREAD_SETNAME_NP_W_TID - A way of doing it on a particular
6687 #                                     platform
6688 if test "$pthread_setname_np_w_tid" = "yes" ; then
6689   echo "CONFIG_THREAD_SETNAME_BYTHREAD=y" >> $config_host_mak
6690   echo "CONFIG_PTHREAD_SETNAME_NP_W_TID=y" >> $config_host_mak
6691 elif test "$pthread_setname_np_wo_tid" = "yes" ; then
6692   echo "CONFIG_THREAD_SETNAME_BYTHREAD=y" >> $config_host_mak
6693   echo "CONFIG_PTHREAD_SETNAME_NP_WO_TID=y" >> $config_host_mak
6694 fi
6695
6696 if test "$libpmem" = "yes" ; then
6697   echo "CONFIG_LIBPMEM=y" >> $config_host_mak
6698   echo "LIBPMEM_LIBS=$libpmem_libs" >> $config_host_mak
6699   echo "LIBPMEM_CFLAGS=$libpmem_cflags" >> $config_host_mak
6700 fi
6701
6702 if test "$libdaxctl" = "yes" ; then
6703   echo "CONFIG_LIBDAXCTL=y" >> $config_host_mak
6704   echo "LIBDAXCTL_LIBS=$libdaxctl_libs" >> $config_host_mak
6705 fi
6706
6707 if test "$bochs" = "yes" ; then
6708   echo "CONFIG_BOCHS=y" >> $config_host_mak
6709 fi
6710 if test "$cloop" = "yes" ; then
6711   echo "CONFIG_CLOOP=y" >> $config_host_mak
6712 fi
6713 if test "$dmg" = "yes" ; then
6714   echo "CONFIG_DMG=y" >> $config_host_mak
6715 fi
6716 if test "$qcow1" = "yes" ; then
6717   echo "CONFIG_QCOW1=y" >> $config_host_mak
6718 fi
6719 if test "$vdi" = "yes" ; then
6720   echo "CONFIG_VDI=y" >> $config_host_mak
6721 fi
6722 if test "$vvfat" = "yes" ; then
6723   echo "CONFIG_VVFAT=y" >> $config_host_mak
6724 fi
6725 if test "$qed" = "yes" ; then
6726   echo "CONFIG_QED=y" >> $config_host_mak
6727 fi
6728 if test "$parallels" = "yes" ; then
6729   echo "CONFIG_PARALLELS=y" >> $config_host_mak
6730 fi
6731 if test "$sheepdog" = "yes" ; then
6732   echo "CONFIG_SHEEPDOG=y" >> $config_host_mak
6733 fi
6734 if test "$pty_h" = "yes" ; then
6735   echo "HAVE_PTY_H=y" >> $config_host_mak
6736 fi
6737 if test "$have_mlockall" = "yes" ; then
6738   echo "HAVE_MLOCKALL=y" >> $config_host_mak
6739 fi
6740 if test "$fuzzing" = "yes" ; then
6741   # If LIB_FUZZING_ENGINE is set, assume we are running on OSS-Fuzz, and the
6742   # needed CFLAGS have already been provided
6743   if test -z "${LIB_FUZZING_ENGINE+xxx}" ; then
6744     QEMU_CFLAGS="$QEMU_CFLAGS -fsanitize=fuzzer-no-link"
6745     FUZZ_EXE_LDFLAGS="-fsanitize=fuzzer"
6746   else
6747     FUZZ_EXE_LDFLAGS="$LIB_FUZZING_ENGINE"
6748   fi
6749 fi
6750
6751 if test "$plugins" = "yes" ; then
6752     echo "CONFIG_PLUGIN=y" >> $config_host_mak
6753     # Copy the export object list to the build dir
6754     if test "$ld_dynamic_list" = "yes" ; then
6755         echo "CONFIG_HAS_LD_DYNAMIC_LIST=yes" >> $config_host_mak
6756         ld_symbols=qemu-plugins-ld.symbols
6757         cp "$source_path/plugins/qemu-plugins.symbols" $ld_symbols
6758     elif test "$ld_exported_symbols_list" = "yes" ; then
6759         echo "CONFIG_HAS_LD_EXPORTED_SYMBOLS_LIST=yes" >> $config_host_mak
6760         ld64_symbols=qemu-plugins-ld64.symbols
6761         echo "# Automatically generated by configure - do not modify" > $ld64_symbols
6762         grep 'qemu_' "$source_path/plugins/qemu-plugins.symbols" | sed 's/;//g' | \
6763             sed -E 's/^[[:space:]]*(.*)/_\1/' >> $ld64_symbols
6764     else
6765         error_exit \
6766             "If \$plugins=yes, either \$ld_dynamic_list or " \
6767             "\$ld_exported_symbols_list should have been set to 'yes'."
6768     fi
6769 fi
6770
6771 if test -n "$gdb_bin" ; then
6772     echo "HAVE_GDB_BIN=$gdb_bin" >> $config_host_mak
6773 fi
6774
6775 if test "$secret_keyring" = "yes" ; then
6776   echo "CONFIG_SECRET_KEYRING=y" >> $config_host_mak
6777 fi
6778
6779 if test "$tcg_interpreter" = "yes"; then
6780   QEMU_INCLUDES="-iquote ${source_path}/tcg/tci $QEMU_INCLUDES"
6781 elif test "$ARCH" = "sparc64" ; then
6782   QEMU_INCLUDES="-iquote ${source_path}/tcg/sparc $QEMU_INCLUDES"
6783 elif test "$ARCH" = "s390x" ; then
6784   QEMU_INCLUDES="-iquote ${source_path}/tcg/s390 $QEMU_INCLUDES"
6785 elif test "$ARCH" = "x86_64" || test "$ARCH" = "x32" ; then
6786   QEMU_INCLUDES="-iquote ${source_path}/tcg/i386 $QEMU_INCLUDES"
6787 elif test "$ARCH" = "ppc64" ; then
6788   QEMU_INCLUDES="-iquote ${source_path}/tcg/ppc $QEMU_INCLUDES"
6789 elif test "$ARCH" = "riscv32" || test "$ARCH" = "riscv64" ; then
6790   QEMU_INCLUDES="-I${source_path}/tcg/riscv $QEMU_INCLUDES"
6791 else
6792   QEMU_INCLUDES="-iquote ${source_path}/tcg/${ARCH} $QEMU_INCLUDES"
6793 fi
6794
6795 echo "ROMS=$roms" >> $config_host_mak
6796 echo "MAKE=$make" >> $config_host_mak
6797 echo "PYTHON=$python" >> $config_host_mak
6798 echo "SPHINX_BUILD=$sphinx_build" >> $config_host_mak
6799 echo "GENISOIMAGE=$genisoimage" >> $config_host_mak
6800 echo "MESON=$meson" >> $config_host_mak
6801 echo "CC=$cc" >> $config_host_mak
6802 if $iasl -h > /dev/null 2>&1; then
6803   echo "CONFIG_IASL=$iasl" >> $config_host_mak
6804 fi
6805 echo "CXX=$cxx" >> $config_host_mak
6806 echo "OBJCC=$objcc" >> $config_host_mak
6807 echo "AR=$ar" >> $config_host_mak
6808 echo "ARFLAGS=$ARFLAGS" >> $config_host_mak
6809 echo "AS=$as" >> $config_host_mak
6810 echo "CCAS=$ccas" >> $config_host_mak
6811 echo "CPP=$cpp" >> $config_host_mak
6812 echo "OBJCOPY=$objcopy" >> $config_host_mak
6813 echo "LD=$ld" >> $config_host_mak
6814 echo "RANLIB=$ranlib" >> $config_host_mak
6815 echo "NM=$nm" >> $config_host_mak
6816 echo "PKG_CONFIG=$pkg_config_exe" >> $config_host_mak
6817 echo "WINDRES=$windres" >> $config_host_mak
6818 echo "CFLAGS_NOPIE=$CFLAGS_NOPIE" >> $config_host_mak
6819 echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak
6820 echo "QEMU_CXXFLAGS=$QEMU_CXXFLAGS" >> $config_host_mak
6821 echo "QEMU_INCLUDES=$QEMU_INCLUDES" >> $config_host_mak
6822 echo "GLIB_CFLAGS=$glib_cflags" >> $config_host_mak
6823 echo "GLIB_LIBS=$glib_libs" >> $config_host_mak
6824 echo "QEMU_LDFLAGS=$QEMU_LDFLAGS" >> $config_host_mak
6825 echo "LDFLAGS_NOPIE=$LDFLAGS_NOPIE" >> $config_host_mak
6826 echo "LD_I386_EMULATION=$ld_i386_emulation" >> $config_host_mak
6827 echo "PTHREAD_LIB=$PTHREAD_LIB" >> $config_host_mak
6828 echo "EXESUF=$EXESUF" >> $config_host_mak
6829 echo "HOST_DSOSUF=$HOST_DSOSUF" >> $config_host_mak
6830 echo "LIBS_QGA=$libs_qga" >> $config_host_mak
6831 echo "TASN1_LIBS=$tasn1_libs" >> $config_host_mak
6832 echo "TASN1_CFLAGS=$tasn1_cflags" >> $config_host_mak
6833 if test "$gcov" = "yes" ; then
6834   echo "CONFIG_GCOV=y" >> $config_host_mak
6835 fi
6836
6837 if test "$fuzzing" != "no"; then
6838     echo "CONFIG_FUZZ=y" >> $config_host_mak
6839 fi
6840 echo "FUZZ_EXE_LDFLAGS=$FUZZ_EXE_LDFLAGS" >> $config_host_mak
6841
6842 if test "$edk2_blobs" = "yes" ; then
6843   echo "DECOMPRESS_EDK2_BLOBS=y" >> $config_host_mak
6844 fi
6845
6846 if test "$rng_none" = "yes"; then
6847   echo "CONFIG_RNG_NONE=y" >> $config_host_mak
6848 fi
6849
6850 # use included Linux headers
6851 if test "$linux" = "yes" ; then
6852   mkdir -p linux-headers
6853   case "$cpu" in
6854   i386|x86_64|x32)
6855     linux_arch=x86
6856     ;;
6857   ppc|ppc64|ppc64le)
6858     linux_arch=powerpc
6859     ;;
6860   s390x)
6861     linux_arch=s390
6862     ;;
6863   aarch64)
6864     linux_arch=arm64
6865     ;;
6866   mips64)
6867     linux_arch=mips
6868     ;;
6869   *)
6870     # For most CPUs the kernel architecture name and QEMU CPU name match.
6871     linux_arch="$cpu"
6872     ;;
6873   esac
6874     # For non-KVM architectures we will not have asm headers
6875     if [ -e "$source_path/linux-headers/asm-$linux_arch" ]; then
6876       symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
6877     fi
6878 fi
6879
6880 for target in $target_list; do
6881     target_dir="$target"
6882     target_name=$(echo $target | cut -d '-' -f 1)
6883     mkdir -p $target_dir
6884     case $target in
6885         *-user) symlink "../qemu-$target_name" "$target_dir/qemu-$target_name" ;;
6886         *) symlink "../qemu-system-$target_name" "$target_dir/qemu-system-$target_name" ;;
6887     esac
6888 done
6889
6890 echo "CONFIG_QEMU_INTERP_PREFIX=$interp_prefix" | sed 's/%M/@0@/' >> $config_host_mak
6891 if test "$default_targets" = "yes"; then
6892   echo "CONFIG_DEFAULT_TARGETS=y" >> $config_host_mak
6893 fi
6894
6895 if test "$numa" = "yes"; then
6896   echo "CONFIG_NUMA=y" >> $config_host_mak
6897   echo "NUMA_LIBS=$numa_libs" >> $config_host_mak
6898 fi
6899
6900 if test "$ccache_cpp2" = "yes"; then
6901   echo "export CCACHE_CPP2=y" >> $config_host_mak
6902 fi
6903
6904 if test "$safe_stack" = "yes"; then
6905   echo "CONFIG_SAFESTACK=y" >> $config_host_mak
6906 fi
6907
6908 # If we're using a separate build tree, set it up now.
6909 # DIRS are directories which we simply mkdir in the build tree;
6910 # LINKS are things to symlink back into the source tree
6911 # (these can be both files and directories).
6912 # Caution: do not add files or directories here using wildcards. This
6913 # will result in problems later if a new file matching the wildcard is
6914 # added to the source tree -- nothing will cause configure to be rerun
6915 # so the build tree will be missing the link back to the new file, and
6916 # tests might fail. Prefer to keep the relevant files in their own
6917 # directory and symlink the directory instead.
6918 # UNLINK is used to remove symlinks from older development versions
6919 # that might get into the way when doing "git update" without doing
6920 # a "make distclean" in between.
6921 DIRS="tests tests/tcg tests/tcg/lm32 tests/qapi-schema tests/qtest/libqos"
6922 DIRS="$DIRS tests/qtest tests/qemu-iotests tests/vm tests/fp tests/qgraph"
6923 DIRS="$DIRS docs docs/interop fsdev scsi"
6924 DIRS="$DIRS pc-bios/optionrom pc-bios/s390-ccw"
6925 DIRS="$DIRS roms/seabios"
6926 DIRS="$DIRS contrib/plugins/"
6927 LINKS="Makefile"
6928 LINKS="$LINKS tests/tcg/lm32/Makefile"
6929 LINKS="$LINKS tests/tcg/Makefile.target"
6930 LINKS="$LINKS pc-bios/optionrom/Makefile"
6931 LINKS="$LINKS pc-bios/s390-ccw/Makefile"
6932 LINKS="$LINKS roms/seabios/Makefile"
6933 LINKS="$LINKS pc-bios/qemu-icon.bmp"
6934 LINKS="$LINKS .gdbinit scripts" # scripts needed by relative path in .gdbinit
6935 LINKS="$LINKS tests/acceptance tests/data"
6936 LINKS="$LINKS tests/qemu-iotests/check"
6937 LINKS="$LINKS python"
6938 LINKS="$LINKS contrib/plugins/Makefile "
6939 UNLINK="pc-bios/keymaps"
6940 for bios_file in \
6941     $source_path/pc-bios/*.bin \
6942     $source_path/pc-bios/*.elf \
6943     $source_path/pc-bios/*.lid \
6944     $source_path/pc-bios/*.rom \
6945     $source_path/pc-bios/*.dtb \
6946     $source_path/pc-bios/*.img \
6947     $source_path/pc-bios/openbios-* \
6948     $source_path/pc-bios/u-boot.* \
6949     $source_path/pc-bios/edk2-*.fd.bz2 \
6950     $source_path/pc-bios/palcode-*
6951 do
6952     LINKS="$LINKS pc-bios/$(basename $bios_file)"
6953 done
6954 mkdir -p $DIRS
6955 for f in $LINKS ; do
6956     if [ -e "$source_path/$f" ]; then
6957         symlink "$source_path/$f" "$f"
6958     fi
6959 done
6960 for f in $UNLINK ; do
6961     if [ -L "$f" ]; then
6962         rm -f "$f"
6963     fi
6964 done
6965
6966 (for i in $cross_cc_vars; do
6967   export $i
6968 done
6969 export target_list source_path use_containers
6970 $source_path/tests/tcg/configure.sh)
6971
6972 # temporary config to build submodules
6973 for rom in seabios; do
6974     config_mak=roms/$rom/config.mak
6975     echo "# Automatically generated by configure - do not modify" > $config_mak
6976     echo "SRC_PATH=$source_path/roms/$rom" >> $config_mak
6977     echo "AS=$as" >> $config_mak
6978     echo "CCAS=$ccas" >> $config_mak
6979     echo "CC=$cc" >> $config_mak
6980     echo "BCC=bcc" >> $config_mak
6981     echo "CPP=$cpp" >> $config_mak
6982     echo "OBJCOPY=objcopy" >> $config_mak
6983     echo "IASL=$iasl" >> $config_mak
6984     echo "LD=$ld" >> $config_mak
6985     echo "RANLIB=$ranlib" >> $config_mak
6986 done
6987
6988 # set up qemu-iotests in this build directory
6989 iotests_common_env="tests/qemu-iotests/common.env"
6990
6991 echo "# Automatically generated by configure - do not modify" > "$iotests_common_env"
6992 echo >> "$iotests_common_env"
6993 echo "export PYTHON='$python'" >> "$iotests_common_env"
6994
6995 if test "$skip_meson" = no; then
6996 cross="config-meson.cross.new"
6997 meson_quote() {
6998     echo "'$(echo $* | sed "s/ /','/g")'"
6999 }
7000
7001 echo "# Automatically generated by configure - do not modify" > $cross
7002 echo "[properties]" >> $cross
7003 test -z "$cxx" && echo "link_language = 'c'" >> $cross
7004 echo "[built-in options]" >> $cross
7005 echo "c_args = [${CFLAGS:+$(meson_quote $CFLAGS)}]" >> $cross
7006 echo "cpp_args = [${CXXFLAGS:+$(meson_quote $CXXFLAGS)}]" >> $cross
7007 echo "c_link_args = [${LDFLAGS:+$(meson_quote $LDFLAGS)}]" >> $cross
7008 echo "cpp_link_args = [${LDFLAGS:+$(meson_quote $LDFLAGS)}]" >> $cross
7009 echo "[binaries]" >> $cross
7010 echo "c = [$(meson_quote $cc)]" >> $cross
7011 test -n "$cxx" && echo "cpp = [$(meson_quote $cxx)]" >> $cross
7012 echo "ar = [$(meson_quote $ar)]" >> $cross
7013 echo "nm = [$(meson_quote $nm)]" >> $cross
7014 echo "pkgconfig = [$(meson_quote $pkg_config_exe)]" >> $cross
7015 echo "ranlib = [$(meson_quote $ranlib)]" >> $cross
7016 if has $sdl2_config; then
7017   echo "sdl2-config = [$(meson_quote $sdl2_config)]" >> $cross
7018 fi
7019 echo "strip = [$(meson_quote $strip)]" >> $cross
7020 echo "windres = [$(meson_quote $windres)]" >> $cross
7021 if test -n "$cross_prefix"; then
7022     cross_arg="--cross-file config-meson.cross"
7023     echo "[host_machine]" >> $cross
7024     if test "$mingw32" = "yes" ; then
7025         echo "system = 'windows'" >> $cross
7026     fi
7027     if test "$linux" = "yes" ; then
7028         echo "system = 'linux'" >> $cross
7029     fi
7030     case "$ARCH" in
7031         i386|x86_64)
7032             echo "cpu_family = 'x86'" >> $cross
7033             ;;
7034         ppc64le)
7035             echo "cpu_family = 'ppc64'" >> $cross
7036             ;;
7037         *)
7038             echo "cpu_family = '$ARCH'" >> $cross
7039             ;;
7040     esac
7041     echo "cpu = '$cpu'" >> $cross
7042     if test "$bigendian" = "yes" ; then
7043         echo "endian = 'big'" >> $cross
7044     else
7045         echo "endian = 'little'" >> $cross
7046     fi
7047 else
7048     cross_arg="--native-file config-meson.cross"
7049 fi
7050 mv $cross config-meson.cross
7051
7052 rm -rf meson-private meson-info meson-logs
7053 NINJA=${ninja:-$PWD/ninjatool} $meson setup \
7054         --prefix "$prefix" \
7055         --libdir "$libdir" \
7056         --libexecdir "$libexecdir" \
7057         --bindir "$bindir" \
7058         --includedir "$includedir" \
7059         --datadir "$datadir" \
7060         --mandir "$mandir" \
7061         --sysconfdir "$sysconfdir" \
7062         --localstatedir "$local_statedir" \
7063         -Ddocdir="$docdir" \
7064         -Dqemu_suffix="$qemu_suffix" \
7065         -Doptimization=$(if test "$debug" = yes; then echo 0; else echo 2; fi) \
7066         -Ddebug=$(if test "$debug_info" = yes; then echo true; else echo false; fi) \
7067         -Dwerror=$(if test "$werror" = yes; then echo true; else echo false; fi) \
7068         -Dstrip=$(if test "$strip_opt" = yes; then echo true; else echo false; fi) \
7069         -Db_pie=$(if test "$pie" = yes; then echo true; else echo false; fi) \
7070         -Db_staticpic=$(if test "$pie" = yes; then echo true; else echo false; fi) \
7071         -Db_coverage=$(if test "$gcov" = yes; then echo true; else echo false; fi) \
7072         -Dmalloc=$malloc -Dmalloc_trim=$malloc_trim -Dsparse=$sparse \
7073         -Dkvm=$kvm -Dhax=$hax -Dwhpx=$whpx -Dhvf=$hvf \
7074         -Dxen=$xen -Dxen_pci_passthrough=$xen_pci_passthrough -Dtcg=$tcg \
7075         -Dcocoa=$cocoa -Dmpath=$mpath -Dsdl=$sdl -Dsdl_image=$sdl_image \
7076         -Dvnc=$vnc -Dvnc_sasl=$vnc_sasl -Dvnc_jpeg=$vnc_jpeg -Dvnc_png=$vnc_png \
7077         -Dgettext=$gettext -Dxkbcommon=$xkbcommon -Du2f=$u2f \
7078         -Dcapstone=$capstone -Dslirp=$slirp -Dfdt=$fdt \
7079         -Diconv=$iconv -Dcurses=$curses \
7080         $cross_arg \
7081         "$PWD" "$source_path"
7082
7083 if test "$?" -ne 0 ; then
7084     error_exit "meson setup failed"
7085 fi
7086 touch ninjatool.stamp
7087 fi
7088
7089 if test -n "${deprecated_features}"; then
7090     echo "Warning, deprecated features enabled."
7091     echo "Please see docs/system/deprecated.rst"
7092     echo "  features: ${deprecated_features}"
7093 fi
7094
7095 # Save the configure command line for later reuse.
7096 cat <<EOD >config.status
7097 #!/bin/sh
7098 # Generated by configure.
7099 # Run this file to recreate the current configuration.
7100 # Compiler output produced by configure, useful for debugging
7101 # configure, is in config.log if it exists.
7102 EOD
7103
7104 preserve_env() {
7105     envname=$1
7106
7107     eval envval=\$$envname
7108
7109     if test -n "$envval"
7110     then
7111         echo "$envname='$envval'" >> config.status
7112         echo "export $envname" >> config.status
7113     else
7114         echo "unset $envname" >> config.status
7115     fi
7116 }
7117
7118 # Preserve various env variables that influence what
7119 # features/build target configure will detect
7120 preserve_env AR
7121 preserve_env AS
7122 preserve_env CC
7123 preserve_env CPP
7124 preserve_env CXX
7125 preserve_env INSTALL
7126 preserve_env LD
7127 preserve_env LD_LIBRARY_PATH
7128 preserve_env LIBTOOL
7129 preserve_env MAKE
7130 preserve_env NM
7131 preserve_env OBJCOPY
7132 preserve_env PATH
7133 preserve_env PKG_CONFIG
7134 preserve_env PKG_CONFIG_LIBDIR
7135 preserve_env PKG_CONFIG_PATH
7136 preserve_env PYTHON
7137 preserve_env SDL2_CONFIG
7138 preserve_env SMBD
7139 preserve_env STRIP
7140 preserve_env WINDRES
7141
7142 printf "exec" >>config.status
7143 for i in "$0" "$@"; do
7144   test "$i" = --skip-meson || printf " '%s'" "$i" >>config.status
7145 done
7146 echo ' "$@"' >>config.status
7147 chmod +x config.status
7148
7149 rm -r "$TMPDIR1"