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
  82 rm -f config.log
  83
  84 # Print a helpful header at the top of config.log
  85 echo "# QEMU configure log $(date)" >> config.log
  86 printf "# Configured with:" >> config.log
  87 printf " '%s'" "$0" "$@" >> config.log
  88 echo >> config.log
  89 echo "#" >> config.log
  90
  91 quote_sh() {
  92     printf "%s" "$1" | sed "s,','\\\\'',g; s,.*,'&',"
  93 }
  94
  95 print_error() {
  96     (echo
  97     echo "ERROR: $1"
  98     while test -n "$2"; do
  99         echo "       $2"
 100         shift
 101     done
 102     echo) >&2
 103 }
 104
 105 error_exit() {
 106     print_error "$@"
 107     exit 1
 108 }
 109
 110 do_compiler() {
 111     # Run the compiler, capturing its output to the log. First argument
 112     # is compiler binary to execute.
 113     compiler="$1"
 114     shift
 115     if test -n "$BASH_VERSION"; then eval '
 116         echo >>config.log "
 117 funcs: ${FUNCNAME[*]}
 118 lines: ${BASH_LINENO[*]}"
 119     '; fi
 120     echo $compiler "$@" >> config.log
 121     $compiler "$@" >> config.log 2>&1 || return $?
 122     # Test passed. If this is an --enable-werror build, rerun
 123     # the test with -Werror and bail out if it fails. This
 124     # makes warning-generating-errors in configure test code
 125     # obvious to developers.
 126     if test "$werror" != "yes"; then
 127         return 0
 128     fi
 129     # Don't bother rerunning the compile if we were already using -Werror
 130     case "$*" in
 131         *-Werror*)
 132            return 0
 133         ;;
 134     esac
 135     echo $compiler -Werror "$@" >> config.log
 136     $compiler -Werror "$@" >> config.log 2>&1 && return $?
 137     error_exit "configure test passed without -Werror but failed with -Werror." \
 138         "This is probably a bug in the configure script. The failing command" \
 139         "will be at the bottom of config.log." \
 140         "You can run configure with --disable-werror to bypass this check."
 141 }
 142
 143 do_cc() {
 144     do_compiler "$cc" $CPU_CFLAGS "$@"
 145 }
 146
 147 do_cxx() {
 148     do_compiler "$cxx" $CPU_CFLAGS "$@"
 149 }
 150
 151 # Append $2 to the variable named $1, with space separation
 152 add_to() {
 153     eval $1=\${$1:+\"\$$1 \"}\$2
 154 }
 155
 156 update_cxxflags() {
 157     # Set QEMU_CXXFLAGS from QEMU_CFLAGS by filtering out those
 158     # options which some versions of GCC's C++ compiler complain about
 159     # because they only make sense for C programs.
 160     QEMU_CXXFLAGS="-D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS"
 161     CONFIGURE_CXXFLAGS=$(echo "$CONFIGURE_CFLAGS" | sed s/-std=gnu11/-std=gnu++11/)
 162     for arg in $QEMU_CFLAGS; do
 163         case $arg in
 164             -Wstrict-prototypes|-Wmissing-prototypes|-Wnested-externs|\
 165             -Wold-style-declaration|-Wold-style-definition|-Wredundant-decls)
 166                 ;;
 167             *)
 168                 QEMU_CXXFLAGS=${QEMU_CXXFLAGS:+$QEMU_CXXFLAGS }$arg
 169                 ;;
 170         esac
 171     done
 172 }
 173
 174 compile_object() {
 175   local_cflags="$1"
 176   do_cc $CFLAGS $EXTRA_CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -c -o $TMPO $TMPC
 177 }
 178
 179 compile_prog() {
 180   local_cflags="$1"
 181   local_ldflags="$2"
 182   do_cc $CFLAGS $EXTRA_CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC \
 183       $LDFLAGS $EXTRA_LDFLAGS $CONFIGURE_LDFLAGS $QEMU_LDFLAGS $local_ldflags
 184 }
 185
 186 # symbolically link $1 to $2.  Portable version of "ln -sf".
 187 symlink() {
 188   rm -rf "$2"
 189   mkdir -p "$(dirname "$2")"
 190   ln -s "$1" "$2"
 191 }
 192
 193 # check whether a command is available to this shell (may be either an
 194 # executable or a builtin)
 195 has() {
 196     type "$1" >/dev/null 2>&1
 197 }
 198
 199 version_ge () {
 200     local_ver1=$(expr "$1" : '\([0-9.]*\)' | tr . ' ')
 201     local_ver2=$(echo "$2" | tr . ' ')
 202     while true; do
 203         set x $local_ver1
 204         local_first=${2-0}
 205         # 'shift 2' if $2 is set, or 'shift' if $2 is not set
 206         shift ${2:+2}
 207         local_ver1=$*
 208         set x $local_ver2
 209         # the second argument finished, the first must be greater or equal
 210         test $# = 1 && return 0
 211         test $local_first -lt $2 && return 1
 212         test $local_first -gt $2 && return 0
 213         shift ${2:+2}
 214         local_ver2=$*
 215     done
 216 }
 217
 218 glob() {
 219     eval test -z '"${1#'"$2"'}"'
 220 }
 221
 222 ld_has() {
 223     $ld --help 2>/dev/null | grep ".$1" >/dev/null 2>&1
 224 }
 225
 226 if printf %s\\n "$source_path" "$PWD" | grep -q "[[:space:]:]";
 227 then
 228   error_exit "main directory cannot contain spaces nor colons"
 229 fi
 230
 231 # default parameters
 232 cpu=""
 233 iasl="iasl"
 234 interp_prefix="/usr/gnemul/qemu-%M"
 235 static="no"
 236 cross_compile="no"
 237 cross_prefix=""
 238 audio_drv_list="default"
 239 block_drv_rw_whitelist=""
 240 block_drv_ro_whitelist=""
 241 host_cc="cc"
 242 debug_info="yes"
 243 lto="false"
 244 stack_protector=""
 245 safe_stack=""
 246 use_containers="yes"
 247 gdb_bin=$(command -v "gdb-multiarch" || command -v "gdb")
 248
 249 if test -e "$source_path/.git"
 250 then
 251     git_submodules_action="update"
 252 else
 253     git_submodules_action="ignore"
 254 fi
 255
 256 git_submodules="ui/keycodemapdb"
 257 git="git"
 258
 259 # Don't accept a target_list environment variable.
 260 unset target_list
 261 unset target_list_exclude
 262
 263 # Default value for a variable defining feature "foo".
 264 #  * foo="no"  feature will only be used if --enable-foo arg is given
 265 #  * foo=""    feature will be searched for, and if found, will be used
 266 #              unless --disable-foo is given
 267 #  * foo="yes" this value will only be set by --enable-foo flag.
 268 #              feature will searched for,
 269 #              if not found, configure exits with error
 270 #
 271 # Always add --enable-foo and --disable-foo command line args.
 272 # Distributions want to ensure that several features are compiled in, and it
 273 # is impossible without a --enable-foo that exits if a feature is not found.
 274
 275 default_feature=""
 276 # parse CC options second
 277 for opt do
 278   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 279   case "$opt" in
 280       --without-default-features)
 281           default_feature="no"
 282   ;;
 283   esac
 284 done
 285
 286 EXTRA_CFLAGS=""
 287 EXTRA_CXXFLAGS=""
 288 EXTRA_LDFLAGS=""
 289
 290 xen_ctrl_version="$default_feature"
 291 vhost_kernel="$default_feature"
 292 vhost_net="$default_feature"
 293 vhost_crypto="$default_feature"
 294 vhost_scsi="$default_feature"
 295 vhost_vsock="$default_feature"
 296 vhost_user="no"
 297 vhost_user_fs="$default_feature"
 298 vhost_vdpa="$default_feature"
 299 rdma="$default_feature"
 300 pvrdma="$default_feature"
 301 debug_tcg="no"
 302 debug="no"
 303 sanitizers="no"
 304 tsan="no"
 305 fortify_source="$default_feature"
 306 gcov="no"
 307 EXESUF=""
 308 modules="no"
 309 module_upgrades="no"
 310 prefix="/usr/local"
 311 qemu_suffix="qemu"
 312 softmmu="yes"
 313 linux_user=""
 314 bsd_user=""
 315 pkgversion=""
 316 pie=""
 317 trace_backends="log"
 318 trace_file="trace"
 319 opengl="$default_feature"
 320 coroutine=""
 321 tls_priority="NORMAL"
 322 plugins="$default_feature"
 323 secret_keyring="$default_feature"
 324 meson=""
 325 meson_args=""
 326 ninja=""
 327 gio="$default_feature"
 328 skip_meson=no
 329
 330 # The following Meson options are handled manually (still they
 331 # are included in the automatically generated help message)
 332
 333 # 1. Track which submodules are needed
 334 if test "$default_feature" = no ; then
 335   capstone="disabled"
 336   slirp="disabled"
 337 else
 338   capstone="auto"
 339   slirp="auto"
 340 fi
 341 fdt="auto"
 342
 343 # 2. Support --with/--without option
 344 default_devices="true"
 345
 346 # 3. Automatically enable/disable other options
 347 tcg="enabled"
 348 cfi="false"
 349
 350 # 4. Detection partly done in configure
 351 xen=${default_feature:+disabled}
 352
 353 # parse CC options second
 354 for opt do
 355   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 356   case "$opt" in
 357   --cross-prefix=*) cross_prefix="$optarg"
 358                     cross_compile="yes"
 359   ;;
 360   --cc=*) CC="$optarg"
 361   ;;
 362   --cxx=*) CXX="$optarg"
 363   ;;
 364   --cpu=*) cpu="$optarg"
 365   ;;
 366   --extra-cflags=*)
 367     EXTRA_CFLAGS="$EXTRA_CFLAGS $optarg"
 368     EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
 369     ;;
 370   --extra-cxxflags=*) EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
 371   ;;
 372   --extra-ldflags=*) EXTRA_LDFLAGS="$EXTRA_LDFLAGS $optarg"
 373   ;;
 374   --enable-debug-info) debug_info="yes"
 375   ;;
 376   --disable-debug-info) debug_info="no"
 377   ;;
 378   --cross-cc-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-cc-FOO option"
 379   ;;
 380   --cross-cc-cflags-*) cc_arch=${opt#--cross-cc-cflags-}; cc_arch=${cc_arch%%=*}
 381                       eval "cross_cc_cflags_${cc_arch}=\$optarg"
 382                       cross_cc_vars="$cross_cc_vars cross_cc_cflags_${cc_arch}"
 383   ;;
 384   --cross-cc-*) cc_arch=${opt#--cross-cc-}; cc_arch=${cc_arch%%=*}
 385                 cc_archs="$cc_archs $cc_arch"
 386                 eval "cross_cc_${cc_arch}=\$optarg"
 387                 cross_cc_vars="$cross_cc_vars cross_cc_${cc_arch}"
 388   ;;
 389   esac
 390 done
 391 # OS specific
 392 # Using uname is really, really broken.  Once we have the right set of checks
 393 # we can eliminate its usage altogether.
 394
 395 # Preferred compiler:
 396 #  ${CC} (if set)
 397 #  ${cross_prefix}gcc (if cross-prefix specified)
 398 #  system compiler
 399 if test -z "${CC}${cross_prefix}"; then
 400   cc="$host_cc"
 401 else
 402   cc="${CC-${cross_prefix}gcc}"
 403 fi
 404
 405 if test -z "${CXX}${cross_prefix}"; then
 406   cxx="c++"
 407 else
 408   cxx="${CXX-${cross_prefix}g++}"
 409 fi
 410
 411 ar="${AR-${cross_prefix}ar}"
 412 as="${AS-${cross_prefix}as}"
 413 ccas="${CCAS-$cc}"
 414 cpp="${CPP-$cc -E}"
 415 objcopy="${OBJCOPY-${cross_prefix}objcopy}"
 416 ld="${LD-${cross_prefix}ld}"
 417 ranlib="${RANLIB-${cross_prefix}ranlib}"
 418 nm="${NM-${cross_prefix}nm}"
 419 smbd="$SMBD"
 420 strip="${STRIP-${cross_prefix}strip}"
 421 windres="${WINDRES-${cross_prefix}windres}"
 422 pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
 423 query_pkg_config() {
 424     "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
 425 }
 426 pkg_config=query_pkg_config
 427 sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"
 428
 429 # default flags for all hosts
 430 # We use -fwrapv to tell the compiler that we require a C dialect where
 431 # left shift of signed integers is well defined and has the expected
 432 # 2s-complement style results. (Both clang and gcc agree that it
 433 # provides these semantics.)
 434 QEMU_CFLAGS="-fno-strict-aliasing -fno-common -fwrapv"
 435 QEMU_CFLAGS="-Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
 436 QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
 437 QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
 438
 439 QEMU_LDFLAGS=
 440
 441 # Flags that are needed during configure but later taken care of by Meson
 442 CONFIGURE_CFLAGS="-std=gnu11 -Wall"
 443 CONFIGURE_LDFLAGS=
 444
 445
 446 check_define() {
 447 cat > $TMPC <<EOF
 448 #if !defined($1)
 449 #error $1 not defined
 450 #endif
 451 int main(void) { return 0; }
 452 EOF
 453   compile_object
 454 }
 455
 456 check_include() {
 457 cat > $TMPC <<EOF
 458 #include <$1>
 459 int main(void) { return 0; }
 460 EOF
 461   compile_object
 462 }
 463
 464 write_c_skeleton() {
 465     cat > $TMPC <<EOF
 466 int main(void) { return 0; }
 467 EOF
 468 }
 469
 470 if check_define __linux__ ; then
 471   targetos=linux
 472 elif check_define _WIN32 ; then
 473   targetos=windows
 474 elif check_define __OpenBSD__ ; then
 475   targetos=openbsd
 476 elif check_define __sun__ ; then
 477   targetos=sunos
 478 elif check_define __HAIKU__ ; then
 479   targetos=haiku
 480 elif check_define __FreeBSD__ ; then
 481   targetos=freebsd
 482 elif check_define __FreeBSD_kernel__ && check_define __GLIBC__; then
 483   targetos=gnu/kfreebsd
 484 elif check_define __DragonFly__ ; then
 485   targetos=dragonfly
 486 elif check_define __NetBSD__; then
 487   targetos=netbsd
 488 elif check_define __APPLE__; then
 489   targetos=darwin
 490 else
 491   # This is a fatal error, but don't report it yet, because we
 492   # might be going to just print the --help text, or it might
 493   # be the result of a missing compiler.
 494   targetos=bogus
 495 fi
 496
 497 # OS specific
 498
 499 mingw32="no"
 500 bsd="no"
 501 linux="no"
 502 solaris="no"
 503 case $targetos in
 504 windows)
 505   mingw32="yes"
 506   plugins="no"
 507   pie="no"
 508 ;;
 509 gnu/kfreebsd)
 510   bsd="yes"
 511 ;;
 512 freebsd)
 513   bsd="yes"
 514   make="${MAKE-gmake}"
 515   # needed for kinfo_getvmmap(3) in libutil.h
 516 ;;
 517 dragonfly)
 518   bsd="yes"
 519   make="${MAKE-gmake}"
 520 ;;
 521 netbsd)
 522   bsd="yes"
 523   make="${MAKE-gmake}"
 524 ;;
 525 openbsd)
 526   bsd="yes"
 527   make="${MAKE-gmake}"
 528 ;;
 529 darwin)
 530   bsd="yes"
 531   darwin="yes"
 532   # Disable attempts to use ObjectiveC features in os/object.h since they
 533   # won't work when we're compiling with gcc as a C compiler.
 534   QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
 535 ;;
 536 sunos)
 537   solaris="yes"
 538   make="${MAKE-gmake}"
 539 # needed for CMSG_ macros in sys/socket.h
 540   QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
 541 # needed for TIOCWIN* defines in termios.h
 542   QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
 543   # $(uname -m) returns i86pc even on an x86_64 box, so default based on isainfo
 544   # Note that this check is broken for cross-compilation: if you're
 545   # cross-compiling to one of these OSes then you'll need to specify
 546   # the correct CPU with the --cpu option.
 547   if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then
 548     cpu="x86_64"
 549   fi
 550 ;;
 551 haiku)
 552   pie="no"
 553   QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -D_BSD_SOURCE -fPIC $QEMU_CFLAGS"
 554 ;;
 555 linux)
 556   linux="yes"
 557   vhost_user=${default_feature:-yes}
 558 ;;
 559 esac
 560
 561 if test ! -z "$cpu" ; then
 562   # command line argument
 563   :
 564 elif check_define __i386__ ; then
 565   cpu="i386"
 566 elif check_define __x86_64__ ; then
 567   if check_define __ILP32__ ; then
 568     cpu="x32"
 569   else
 570     cpu="x86_64"
 571   fi
 572 elif check_define __sparc__ ; then
 573   if check_define __arch64__ ; then
 574     cpu="sparc64"
 575   else
 576     cpu="sparc"
 577   fi
 578 elif check_define _ARCH_PPC ; then
 579   if check_define _ARCH_PPC64 ; then
 580     if check_define _LITTLE_ENDIAN ; then
 581       cpu="ppc64le"
 582     else
 583       cpu="ppc64"
 584     fi
 585   else
 586     cpu="ppc"
 587   fi
 588 elif check_define __mips__ ; then
 589   cpu="mips"
 590 elif check_define __s390__ ; then
 591   if check_define __s390x__ ; then
 592     cpu="s390x"
 593   else
 594     cpu="s390"
 595   fi
 596 elif check_define __riscv ; then
 597   cpu="riscv"
 598 elif check_define __arm__ ; then
 599   cpu="arm"
 600 elif check_define __aarch64__ ; then
 601   cpu="aarch64"
 602 elif check_define __loongarch64 ; then
 603   cpu="loongarch64"
 604 else
 605   cpu=$(uname -m)
 606 fi
 607
 608 # Normalise host CPU name, set multilib cflags
 609 # Note that this case should only have supported host CPUs, not guests.
 610 case "$cpu" in
 611   armv*b|armv*l|arm)
 612     cpu="arm" ;;
 613
 614   i386|i486|i586|i686|i86pc|BePC)
 615     cpu="i386"
 616     CPU_CFLAGS="-m32" ;;
 617   x32)
 618     cpu="x86_64"
 619     CPU_CFLAGS="-mx32" ;;
 620   x86_64|amd64)
 621     cpu="x86_64"
 622     # ??? Only extremely old AMD cpus do not have cmpxchg16b.
 623     # If we truly care, we should simply detect this case at
 624     # runtime and generate the fallback to serial emulation.
 625     CPU_CFLAGS="-m64 -mcx16" ;;
 626
 627   mips*)
 628     cpu="mips" ;;
 629
 630   ppc)
 631     CPU_CFLAGS="-m32" ;;
 632   ppc64)
 633     CPU_CFLAGS="-m64 -mbig-endian" ;;
 634   ppc64le)
 635     cpu="ppc64"
 636     CPU_CFLAGS="-m64 -mlittle-endian" ;;
 637
 638   s390)
 639     CPU_CFLAGS="-m31" ;;
 640   s390x)
 641     CPU_CFLAGS="-m64" ;;
 642
 643   sparc|sun4[cdmuv])
 644     cpu="sparc"
 645     CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc" ;;
 646   sparc64)
 647     CPU_CFLAGS="-m64 -mcpu=ultrasparc" ;;
 648 esac
 649
 650 : ${make=${MAKE-make}}
 651
 652 # We prefer python 3.x. A bare 'python' is traditionally
 653 # python 2.x, but some distros have it as python 3.x, so
 654 # we check that too
 655 python=
 656 explicit_python=no
 657 for binary in "${PYTHON-python3}" python
 658 do
 659     if has "$binary"
 660     then
 661         python=$(command -v "$binary")
 662         break
 663     fi
 664 done
 665
 666
 667 # Check for ancillary tools used in testing
 668 genisoimage=
 669 for binary in genisoimage mkisofs
 670 do
 671     if has $binary
 672     then
 673         genisoimage=$(command -v "$binary")
 674         break
 675     fi
 676 done
 677
 678 # Default objcc to clang if available, otherwise use CC
 679 if has clang; then
 680   objcc=clang
 681 else
 682   objcc="$cc"
 683 fi
 684
 685 if test "$mingw32" = "yes" ; then
 686   EXESUF=".exe"
 687   # MinGW needs -mthreads for TLS and macro _MT.
 688   CONFIGURE_CFLAGS="-mthreads $CONFIGURE_CFLAGS"
 689   write_c_skeleton;
 690   prefix="/qemu"
 691   qemu_suffix=""
 692 fi
 693
 694 werror=""
 695
 696 . $source_path/scripts/meson-buildoptions.sh
 697
 698 meson_options=
 699 meson_option_parse() {
 700   meson_options="$meson_options $(_meson_option_parse "$@")"
 701   if test $? -eq 1; then
 702     echo "ERROR: unknown option $1"
 703     echo "Try '$0 --help' for more information"
 704     exit 1
 705   fi
 706 }
 707
 708 for opt do
 709   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 710   case "$opt" in
 711   --help|-h) show_help=yes
 712   ;;
 713   --version|-V) exec cat $source_path/VERSION
 714   ;;
 715   --prefix=*) prefix="$optarg"
 716   ;;
 717   --interp-prefix=*) interp_prefix="$optarg"
 718   ;;
 719   --cross-prefix=*)
 720   ;;
 721   --cc=*)
 722   ;;
 723   --host-cc=*) host_cc="$optarg"
 724   ;;
 725   --cxx=*)
 726   ;;
 727   --iasl=*) iasl="$optarg"
 728   ;;
 729   --objcc=*) objcc="$optarg"
 730   ;;
 731   --make=*) make="$optarg"
 732   ;;
 733   --install=*)
 734   ;;
 735   --python=*) python="$optarg" ; explicit_python=yes
 736   ;;
 737   --sphinx-build=*) sphinx_build="$optarg"
 738   ;;
 739   --skip-meson) skip_meson=yes
 740   ;;
 741   --meson=*) meson="$optarg"
 742   ;;
 743   --ninja=*) ninja="$optarg"
 744   ;;
 745   --smbd=*) smbd="$optarg"
 746   ;;
 747   --extra-cflags=*)
 748   ;;
 749   --extra-cxxflags=*)
 750   ;;
 751   --extra-ldflags=*)
 752   ;;
 753   --enable-debug-info)
 754   ;;
 755   --disable-debug-info)
 756   ;;
 757   --cross-cc-*)
 758   ;;
 759   --enable-modules)
 760       modules="yes"
 761   ;;
 762   --disable-modules)
 763       modules="no"
 764   ;;
 765   --disable-module-upgrades) module_upgrades="no"
 766   ;;
 767   --enable-module-upgrades) module_upgrades="yes"
 768   ;;
 769   --cpu=*)
 770   ;;
 771   --target-list=*) target_list="$optarg"
 772                    if test "$target_list_exclude"; then
 773                        error_exit "Can't mix --target-list with --target-list-exclude"
 774                    fi
 775   ;;
 776   --target-list-exclude=*) target_list_exclude="$optarg"
 777                    if test "$target_list"; then
 778                        error_exit "Can't mix --target-list-exclude with --target-list"
 779                    fi
 780   ;;
 781   --with-trace-file=*) trace_file="$optarg"
 782   ;;
 783   --with-default-devices) default_devices="true"
 784   ;;
 785   --without-default-devices) default_devices="false"
 786   ;;
 787   --with-devices-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --with-devices-FOO option"
 788   ;;
 789   --with-devices-*) device_arch=${opt#--with-devices-};
 790                     device_arch=${device_arch%%=*}
 791                     cf=$source_path/configs/devices/$device_arch-softmmu/$optarg.mak
 792                     if test -f "$cf"; then
 793                         device_archs="$device_archs $device_arch"
 794                         eval "devices_${device_arch}=\$optarg"
 795                     else
 796                         error_exit "File $cf does not exist"
 797                     fi
 798   ;;
 799   --without-default-features) # processed above
 800   ;;
 801   --enable-gcov) gcov="yes"
 802   ;;
 803   --static)
 804     static="yes"
 805     QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
 806   ;;
 807   --mandir=*) mandir="$optarg"
 808   ;;
 809   --bindir=*) bindir="$optarg"
 810   ;;
 811   --libdir=*) libdir="$optarg"
 812   ;;
 813   --libexecdir=*) libexecdir="$optarg"
 814   ;;
 815   --includedir=*) includedir="$optarg"
 816   ;;
 817   --datadir=*) datadir="$optarg"
 818   ;;
 819   --with-suffix=*) qemu_suffix="$optarg"
 820   ;;
 821   --docdir=*) docdir="$optarg"
 822   ;;
 823   --localedir=*) localedir="$optarg"
 824   ;;
 825   --sysconfdir=*) sysconfdir="$optarg"
 826   ;;
 827   --localstatedir=*) local_statedir="$optarg"
 828   ;;
 829   --firmwarepath=*) firmwarepath="$optarg"
 830   ;;
 831   --host=*|--build=*|\
 832   --disable-dependency-tracking|\
 833   --sbindir=*|--sharedstatedir=*|\
 834   --oldincludedir=*|--datarootdir=*|--infodir=*|\
 835   --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
 836     # These switches are silently ignored, for compatibility with
 837     # autoconf-generated configure scripts. This allows QEMU's
 838     # configure to be used by RPM and similar macros that set
 839     # lots of directory switches by default.
 840   ;;
 841   --audio-drv-list=*) audio_drv_list="$optarg"
 842   ;;
 843   --block-drv-rw-whitelist=*|--block-drv-whitelist=*) block_drv_rw_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
 844   ;;
 845   --block-drv-ro-whitelist=*) block_drv_ro_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
 846   ;;
 847   --enable-debug-tcg) debug_tcg="yes"
 848   ;;
 849   --disable-debug-tcg) debug_tcg="no"
 850   ;;
 851   --enable-debug)
 852       # Enable debugging options that aren't excessively noisy
 853       debug_tcg="yes"
 854       meson_option_parse --enable-debug-mutex ""
 855       debug="yes"
 856       fortify_source="no"
 857   ;;
 858   --enable-sanitizers) sanitizers="yes"
 859   ;;
 860   --disable-sanitizers) sanitizers="no"
 861   ;;
 862   --enable-tsan) tsan="yes"
 863   ;;
 864   --disable-tsan) tsan="no"
 865   ;;
 866   --disable-slirp) slirp="disabled"
 867   ;;
 868   --enable-slirp) slirp="enabled"
 869   ;;
 870   --enable-slirp=git) slirp="internal"
 871   ;;
 872   --enable-slirp=*) slirp="$optarg"
 873   ;;
 874   --disable-xen) xen="disabled"
 875   ;;
 876   --enable-xen) xen="enabled"
 877   ;;
 878   --disable-tcg) tcg="disabled"
 879                  plugins="no"
 880   ;;
 881   --enable-tcg) tcg="enabled"
 882   ;;
 883   --disable-system) softmmu="no"
 884   ;;
 885   --enable-system) softmmu="yes"
 886   ;;
 887   --disable-user)
 888       linux_user="no" ;
 889       bsd_user="no" ;
 890   ;;
 891   --enable-user) ;;
 892   --disable-linux-user) linux_user="no"
 893   ;;
 894   --enable-linux-user) linux_user="yes"
 895   ;;
 896   --disable-bsd-user) bsd_user="no"
 897   ;;
 898   --enable-bsd-user) bsd_user="yes"
 899   ;;
 900   --enable-pie) pie="yes"
 901   ;;
 902   --disable-pie) pie="no"
 903   ;;
 904   --enable-werror) werror="yes"
 905   ;;
 906   --disable-werror) werror="no"
 907   ;;
 908   --enable-lto) lto="true"
 909   ;;
 910   --disable-lto) lto="false"
 911   ;;
 912   --enable-stack-protector) stack_protector="yes"
 913   ;;
 914   --disable-stack-protector) stack_protector="no"
 915   ;;
 916   --enable-safe-stack) safe_stack="yes"
 917   ;;
 918   --disable-safe-stack) safe_stack="no"
 919   ;;
 920   --enable-cfi)
 921       cfi="true";
 922       lto="true";
 923   ;;
 924   --disable-cfi) cfi="false"
 925   ;;
 926   --disable-fdt) fdt="disabled"
 927   ;;
 928   --enable-fdt) fdt="enabled"
 929   ;;
 930   --enable-fdt=git) fdt="internal"
 931   ;;
 932   --enable-fdt=*) fdt="$optarg"
 933   ;;
 934   --with-pkgversion=*) pkgversion="$optarg"
 935   ;;
 936   --with-coroutine=*) coroutine="$optarg"
 937   ;;
 938   --disable-vhost-net) vhost_net="no"
 939   ;;
 940   --enable-vhost-net) vhost_net="yes"
 941   ;;
 942   --disable-vhost-crypto) vhost_crypto="no"
 943   ;;
 944   --enable-vhost-crypto) vhost_crypto="yes"
 945   ;;
 946   --disable-vhost-scsi) vhost_scsi="no"
 947   ;;
 948   --enable-vhost-scsi) vhost_scsi="yes"
 949   ;;
 950   --disable-vhost-vsock) vhost_vsock="no"
 951   ;;
 952   --enable-vhost-vsock) vhost_vsock="yes"
 953   ;;
 954   --disable-vhost-user-fs) vhost_user_fs="no"
 955   ;;
 956   --enable-vhost-user-fs) vhost_user_fs="yes"
 957   ;;
 958   --disable-opengl) opengl="no"
 959   ;;
 960   --enable-opengl) opengl="yes"
 961   ;;
 962   --disable-zlib-test)
 963   ;;
 964   --disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
 965       echo "$0: $opt is obsolete, virtio-blk data-plane is always on" >&2
 966   ;;
 967   --enable-vhdx|--disable-vhdx)
 968       echo "$0: $opt is obsolete, VHDX driver is always built" >&2
 969   ;;
 970   --enable-uuid|--disable-uuid)
 971       echo "$0: $opt is obsolete, UUID support is always built" >&2
 972   ;;
 973   --tls-priority=*) tls_priority="$optarg"
 974   ;;
 975   --enable-rdma) rdma="yes"
 976   ;;
 977   --disable-rdma) rdma="no"
 978   ;;
 979   --enable-pvrdma) pvrdma="yes"
 980   ;;
 981   --disable-pvrdma) pvrdma="no"
 982   ;;
 983   --disable-vhost-user) vhost_user="no"
 984   ;;
 985   --enable-vhost-user) vhost_user="yes"
 986   ;;
 987   --disable-vhost-vdpa) vhost_vdpa="no"
 988   ;;
 989   --enable-vhost-vdpa) vhost_vdpa="yes"
 990   ;;
 991   --disable-vhost-kernel) vhost_kernel="no"
 992   ;;
 993   --enable-vhost-kernel) vhost_kernel="yes"
 994   ;;
 995   --disable-capstone) capstone="disabled"
 996   ;;
 997   --enable-capstone) capstone="enabled"
 998   ;;
 999   --enable-capstone=git) capstone="internal"
1000   ;;
1001   --enable-capstone=*) capstone="$optarg"
1002   ;;
1003   --with-git=*) git="$optarg"
1004   ;;
1005   --with-git-submodules=*)
1006       git_submodules_action="$optarg"
1007   ;;
1008   --enable-plugins) if test "$mingw32" = "yes"; then
1009                         error_exit "TCG plugins not currently supported on Windows platforms"
1010                     else
1011                         plugins="yes"
1012                     fi
1013   ;;
1014   --disable-plugins) plugins="no"
1015   ;;
1016   --enable-containers) use_containers="yes"
1017   ;;
1018   --disable-containers) use_containers="no"
1019   ;;
1020   --gdb=*) gdb_bin="$optarg"
1021   ;;
1022   --enable-keyring) secret_keyring="yes"
1023   ;;
1024   --disable-keyring) secret_keyring="no"
1025   ;;
1026   --enable-gio) gio=yes
1027   ;;
1028   --disable-gio) gio=no
1029   ;;
1030   # backwards compatibility options
1031   --enable-trace-backend=*) meson_option_parse "--enable-trace-backends=$optarg" "$optarg"
1032   ;;
1033   --disable-blobs) meson_option_parse --disable-install-blobs ""
1034   ;;
1035   --enable-tcmalloc) meson_option_parse --enable-malloc=tcmalloc tcmalloc
1036   ;;
1037   --enable-jemalloc) meson_option_parse --enable-malloc=jemalloc jemalloc
1038   ;;
1039   # everything else has the same name in configure and meson
1040   --enable-* | --disable-*) meson_option_parse "$opt" "$optarg"
1041   ;;
1042   *)
1043       echo "ERROR: unknown option $opt"
1044       echo "Try '$0 --help' for more information"
1045       exit 1
1046   ;;
1047   esac
1048 done
1049
1050 # test for any invalid configuration combinations
1051 if test "$plugins" = "yes" -a "$tcg" = "disabled"; then
1052     error_exit "Can't enable plugins on non-TCG builds"
1053 fi
1054
1055 case $git_submodules_action in
1056     update|validate)
1057         if test ! -e "$source_path/.git"; then
1058             echo "ERROR: cannot $git_submodules_action git submodules without .git"
1059             exit 1
1060         fi
1061     ;;
1062     ignore)
1063         if ! test -f "$source_path/ui/keycodemapdb/README"
1064         then
1065             echo
1066             echo "ERROR: missing GIT submodules"
1067             echo
1068             if test -e "$source_path/.git"; then
1069                 echo "--with-git-submodules=ignore specified but submodules were not"
1070                 echo "checked out.  Please initialize and update submodules."
1071             else
1072                 echo "This is not a GIT checkout but module content appears to"
1073                 echo "be missing. Do not use 'git archive' or GitHub download links"
1074                 echo "to acquire QEMU source archives. Non-GIT builds are only"
1075                 echo "supported with source archives linked from:"
1076                 echo
1077                 echo "  https://www.qemu.org/download/#source"
1078                 echo
1079                 echo "Developers working with GIT can use scripts/archive-source.sh"
1080                 echo "if they need to create valid source archives."
1081             fi
1082             echo
1083             exit 1
1084         fi
1085     ;;
1086     *)
1087         echo "ERROR: invalid --with-git-submodules= value '$git_submodules_action'"
1088         exit 1
1089     ;;
1090 esac
1091
1092 libdir="${libdir:-$prefix/lib}"
1093 libexecdir="${libexecdir:-$prefix/libexec}"
1094 includedir="${includedir:-$prefix/include}"
1095
1096 if test "$mingw32" = "yes" ; then
1097     bindir="${bindir:-$prefix}"
1098 else
1099     bindir="${bindir:-$prefix/bin}"
1100 fi
1101 mandir="${mandir:-$prefix/share/man}"
1102 datadir="${datadir:-$prefix/share}"
1103 docdir="${docdir:-$prefix/share/doc}"
1104 sysconfdir="${sysconfdir:-$prefix/etc}"
1105 local_statedir="${local_statedir:-$prefix/var}"
1106 firmwarepath="${firmwarepath:-$datadir/qemu-firmware}"
1107 localedir="${localedir:-$datadir/locale}"
1108
1109 if eval test -z "\${cross_cc_$cpu}"; then
1110     eval "cross_cc_${cpu}=\$cc"
1111     cross_cc_vars="$cross_cc_vars cross_cc_${cpu}"
1112 fi
1113
1114 default_target_list=""
1115 mak_wilds=""
1116
1117 if [ "$linux_user" != no ]; then
1118     if [ "$targetos" = linux ] && [ -d $source_path/linux-user/include/host/$cpu ]; then
1119         linux_user=yes
1120     elif [ "$linux_user" = yes ]; then
1121         error_exit "linux-user not supported on this architecture"
1122     fi
1123 fi
1124 if [ "$bsd_user" != no ]; then
1125     if [ "$bsd_user" = "" ]; then
1126         test $targetos = freebsd && bsd_user=yes
1127     fi
1128     if [ "$bsd_user" = yes ] && ! [ -d $source_path/bsd-user/$targetos ]; then
1129         error_exit "bsd-user not supported on this host OS"
1130     fi
1131 fi
1132 if [ "$softmmu" = "yes" ]; then
1133     mak_wilds="${mak_wilds} $source_path/configs/targets/*-softmmu.mak"
1134 fi
1135 if [ "$linux_user" = "yes" ]; then
1136     mak_wilds="${mak_wilds} $source_path/configs/targets/*-linux-user.mak"
1137 fi
1138 if [ "$bsd_user" = "yes" ]; then
1139     mak_wilds="${mak_wilds} $source_path/configs/targets/*-bsd-user.mak"
1140 fi
1141
1142 for config in $mak_wilds; do
1143     target="$(basename "$config" .mak)"
1144     if echo "$target_list_exclude" | grep -vq "$target"; then
1145         default_target_list="${default_target_list} $target"
1146     fi
1147 done
1148
1149 if test x"$show_help" = x"yes" ; then
1150 cat << EOF
1151
1152 Usage: configure [options]
1153 Options: [defaults in brackets after descriptions]
1154
1155 Standard options:
1156   --help                   print this message
1157   --prefix=PREFIX          install in PREFIX [$prefix]
1158   --interp-prefix=PREFIX   where to find shared libraries, etc.
1159                            use %M for cpu name [$interp_prefix]
1160   --target-list=LIST       set target list (default: build all)
1161 $(echo Available targets: $default_target_list | \
1162   fold -s -w 53 | sed -e 's/^/                           /')
1163   --target-list-exclude=LIST exclude a set of targets from the default target-list
1164
1165 Advanced options (experts only):
1166   --cross-prefix=PREFIX    use PREFIX for compile tools, PREFIX can be blank [$cross_prefix]
1167   --cc=CC                  use C compiler CC [$cc]
1168   --iasl=IASL              use ACPI compiler IASL [$iasl]
1169   --host-cc=CC             use C compiler CC [$host_cc] for code run at
1170                            build time
1171   --cxx=CXX                use C++ compiler CXX [$cxx]
1172   --objcc=OBJCC            use Objective-C compiler OBJCC [$objcc]
1173   --extra-cflags=CFLAGS    append extra C compiler flags CFLAGS
1174   --extra-cxxflags=CXXFLAGS append extra C++ compiler flags CXXFLAGS
1175   --extra-ldflags=LDFLAGS  append extra linker flags LDFLAGS
1176   --cross-cc-ARCH=CC       use compiler when building ARCH guest test cases
1177   --cross-cc-cflags-ARCH=  use compiler flags when building ARCH guest tests
1178   --make=MAKE              use specified make [$make]
1179   --python=PYTHON          use specified python [$python]
1180   --sphinx-build=SPHINX    use specified sphinx-build [$sphinx_build]
1181   --meson=MESON            use specified meson [$meson]
1182   --ninja=NINJA            use specified ninja [$ninja]
1183   --smbd=SMBD              use specified smbd [$smbd]
1184   --with-git=GIT           use specified git [$git]
1185   --with-git-submodules=update   update git submodules (default if .git dir exists)
1186   --with-git-submodules=validate fail if git submodules are not up to date
1187   --with-git-submodules=ignore   do not update or check git submodules (default if no .git dir)
1188   --static                 enable static build [$static]
1189   --mandir=PATH            install man pages in PATH
1190   --datadir=PATH           install firmware in PATH/$qemu_suffix
1191   --localedir=PATH         install translation in PATH/$qemu_suffix
1192   --docdir=PATH            install documentation in PATH/$qemu_suffix
1193   --bindir=PATH            install binaries in PATH
1194   --libdir=PATH            install libraries in PATH
1195   --libexecdir=PATH        install helper binaries in PATH
1196   --sysconfdir=PATH        install config in PATH/$qemu_suffix
1197   --localstatedir=PATH     install local state in PATH (set at runtime on win32)
1198   --firmwarepath=PATH      search PATH for firmware files
1199   --efi-aarch64=PATH       PATH of efi file to use for aarch64 VMs.
1200   --with-suffix=SUFFIX     suffix for QEMU data inside datadir/libdir/sysconfdir/docdir [$qemu_suffix]
1201   --with-pkgversion=VERS   use specified string as sub-version of the package
1202   --without-default-features default all --enable-* options to "disabled"
1203   --without-default-devices  do not include any device that is not needed to
1204                            start the emulator (only use if you are including
1205                            desired devices in configs/devices/)
1206   --with-devices-ARCH=NAME override default configs/devices
1207   --enable-debug           enable common debug build options
1208   --enable-sanitizers      enable default sanitizers
1209   --enable-tsan            enable thread sanitizer
1210   --disable-werror         disable compilation abort on warning
1211   --disable-stack-protector disable compiler-provided stack protection
1212   --audio-drv-list=LIST    set audio drivers to try if -audiodev is not used
1213   --block-drv-whitelist=L  Same as --block-drv-rw-whitelist=L
1214   --block-drv-rw-whitelist=L
1215                            set block driver read-write whitelist
1216                            (by default affects only QEMU, not tools like qemu-img)
1217   --block-drv-ro-whitelist=L
1218                            set block driver read-only whitelist
1219                            (by default affects only QEMU, not tools like qemu-img)
1220   --with-trace-file=NAME   Full PATH,NAME of file to store traces
1221                            Default:trace-<pid>
1222   --cpu=CPU                Build for host CPU [$cpu]
1223   --with-coroutine=BACKEND coroutine backend. Supported options:
1224                            ucontext, sigaltstack, windows
1225   --enable-gcov            enable test coverage analysis with gcov
1226   --tls-priority           default TLS protocol/cipher priority string
1227   --enable-plugins
1228                            enable plugins via shared library loading
1229   --disable-containers     don't use containers for cross-building
1230   --gdb=GDB-path           gdb to use for gdbstub tests [$gdb_bin]
1231 EOF
1232   meson_options_help
1233 cat << EOF
1234   system          all system emulation targets
1235   user            supported user emulation targets
1236   linux-user      all linux usermode emulation targets
1237   bsd-user        all BSD usermode emulation targets
1238   pie             Position Independent Executables
1239   modules         modules support (non-Windows)
1240   module-upgrades try to load modules from alternate paths for upgrades
1241   debug-tcg       TCG debugging (default is disabled)
1242   debug-info      debugging information
1243   lto             Enable Link-Time Optimization.
1244   safe-stack      SafeStack Stack Smash Protection. Depends on
1245                   clang/llvm >= 3.7 and requires coroutine backend ucontext.
1246   rdma            Enable RDMA-based migration
1247   pvrdma          Enable PVRDMA support
1248   vhost-net       vhost-net kernel acceleration support
1249   vhost-vsock     virtio sockets device support
1250   vhost-scsi      vhost-scsi kernel target support
1251   vhost-crypto    vhost-user-crypto backend support
1252   vhost-kernel    vhost kernel backend support
1253   vhost-user      vhost-user backend support
1254   vhost-vdpa      vhost-vdpa kernel backend support
1255   opengl          opengl support
1256   gio             libgio support
1257
1258 NOTE: The object files are built at the place where configure is launched
1259 EOF
1260 exit 0
1261 fi
1262
1263 # Remove old dependency files to make sure that they get properly regenerated
1264 rm -f */config-devices.mak.d
1265
1266 if test -z "$python"
1267 then
1268     error_exit "Python not found. Use --python=/path/to/python"
1269 fi
1270 if ! has "$make"
1271 then
1272     error_exit "GNU make ($make) not found"
1273 fi
1274
1275 # Note that if the Python conditional here evaluates True we will exit
1276 # with status 1 which is a shell 'false' value.
1277 if ! $python -c 'import sys; sys.exit(sys.version_info < (3,6))'; then
1278   error_exit "Cannot use '$python', Python >= 3.6 is required." \
1279       "Use --python=/path/to/python to specify a supported Python."
1280 fi
1281
1282 # Preserve python version since some functionality is dependent on it
1283 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)
1284
1285 # Suppress writing compiled files
1286 python="$python -B"
1287
1288 if test -z "$meson"; then
1289     if test "$explicit_python" = no && has meson && version_ge "$(meson --version)" 0.59.3; then
1290         meson=meson
1291     elif test $git_submodules_action != 'ignore' ; then
1292         meson=git
1293     elif test -e "${source_path}/meson/meson.py" ; then
1294         meson=internal
1295     else
1296         if test "$explicit_python" = yes; then
1297             error_exit "--python requires using QEMU's embedded Meson distribution, but it was not found."
1298         else
1299             error_exit "Meson not found.  Use --meson=/path/to/meson"
1300         fi
1301     fi
1302 else
1303     # Meson uses its own Python interpreter to invoke other Python scripts,
1304     # but the user wants to use the one they specified with --python.
1305     #
1306     # We do not want to override the distro Python interpreter (and sometimes
1307     # cannot: for example in Homebrew /usr/bin/meson is a bash script), so
1308     # just require --meson=git|internal together with --python.
1309     if test "$explicit_python" = yes; then
1310         case "$meson" in
1311             git | internal) ;;
1312             *) error_exit "--python requires using QEMU's embedded Meson distribution." ;;
1313         esac
1314     fi
1315 fi
1316
1317 if test "$meson" = git; then
1318     git_submodules="${git_submodules} meson"
1319 fi
1320
1321 case "$meson" in
1322     git | internal)
1323         meson="$python ${source_path}/meson/meson.py"
1324         ;;
1325     *) meson=$(command -v "$meson") ;;
1326 esac
1327
1328 # Probe for ninja
1329
1330 if test -z "$ninja"; then
1331     for c in ninja ninja-build samu; do
1332         if has $c; then
1333             ninja=$(command -v "$c")
1334             break
1335         fi
1336     done
1337     if test -z "$ninja"; then
1338       error_exit "Cannot find Ninja"
1339     fi
1340 fi
1341
1342 # Check that the C compiler works. Doing this here before testing
1343 # the host CPU ensures that we had a valid CC to autodetect the
1344 # $cpu var (and we should bail right here if that's not the case).
1345 # It also allows the help message to be printed without a CC.
1346 write_c_skeleton;
1347 if compile_object ; then
1348   : C compiler works ok
1349 else
1350     error_exit "\"$cc\" either does not exist or does not work"
1351 fi
1352 if ! compile_prog ; then
1353     error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
1354 fi
1355
1356 # Consult white-list to determine whether to enable werror
1357 # by default.  Only enable by default for git builds
1358 if test -z "$werror" ; then
1359     if test "$git_submodules_action" != "ignore" && \
1360         { test "$linux" = "yes" || test "$mingw32" = "yes"; }; then
1361         werror="yes"
1362     else
1363         werror="no"
1364     fi
1365 fi
1366
1367 if test "$targetos" = "bogus"; then
1368     # Now that we know that we're not printing the help and that
1369     # the compiler works (so the results of the check_defines we used
1370     # to identify the OS are reliable), if we didn't recognize the
1371     # host OS we should stop now.
1372     error_exit "Unrecognized host OS (uname -s reports '$(uname -s)')"
1373 fi
1374
1375 # Check whether the compiler matches our minimum requirements:
1376 cat > $TMPC << EOF
1377 #if defined(__clang_major__) && defined(__clang_minor__)
1378 # ifdef __apple_build_version__
1379 #  if __clang_major__ < 10 || (__clang_major__ == 10 && __clang_minor__ < 0)
1380 #   error You need at least XCode Clang v10.0 to compile QEMU
1381 #  endif
1382 # else
1383 #  if __clang_major__ < 6 || (__clang_major__ == 6 && __clang_minor__ < 0)
1384 #   error You need at least Clang v6.0 to compile QEMU
1385 #  endif
1386 # endif
1387 #elif defined(__GNUC__) && defined(__GNUC_MINOR__)
1388 # if __GNUC__ < 7 || (__GNUC__ == 7 && __GNUC_MINOR__ < 4)
1389 #  error You need at least GCC v7.4.0 to compile QEMU
1390 # endif
1391 #else
1392 # error You either need GCC or Clang to compiler QEMU
1393 #endif
1394 int main (void) { return 0; }
1395 EOF
1396 if ! compile_prog "" "" ; then
1397     error_exit "You need at least GCC v7.4 or Clang v6.0 (or XCode Clang v10.0)"
1398 fi
1399
1400 # Accumulate -Wfoo and -Wno-bar separately.
1401 # We will list all of the enable flags first, and the disable flags second.
1402 # Note that we do not add -Werror, because that would enable it for all
1403 # configure tests. If a configure test failed due to -Werror this would
1404 # just silently disable some features, so it's too error prone.
1405
1406 warn_flags=
1407 add_to warn_flags -Wold-style-declaration
1408 add_to warn_flags -Wold-style-definition
1409 add_to warn_flags -Wtype-limits
1410 add_to warn_flags -Wformat-security
1411 add_to warn_flags -Wformat-y2k
1412 add_to warn_flags -Winit-self
1413 add_to warn_flags -Wignored-qualifiers
1414 add_to warn_flags -Wempty-body
1415 add_to warn_flags -Wnested-externs
1416 add_to warn_flags -Wendif-labels
1417 add_to warn_flags -Wexpansion-to-defined
1418 add_to warn_flags -Wimplicit-fallthrough=2
1419
1420 nowarn_flags=
1421 add_to nowarn_flags -Wno-initializer-overrides
1422 add_to nowarn_flags -Wno-missing-include-dirs
1423 add_to nowarn_flags -Wno-shift-negative-value
1424 add_to nowarn_flags -Wno-string-plus-int
1425 add_to nowarn_flags -Wno-typedef-redefinition
1426 add_to nowarn_flags -Wno-tautological-type-limit-compare
1427 add_to nowarn_flags -Wno-psabi
1428
1429 gcc_flags="$warn_flags $nowarn_flags"
1430
1431 cc_has_warning_flag() {
1432     write_c_skeleton;
1433
1434     # Use the positive sense of the flag when testing for -Wno-wombat
1435     # support (gcc will happily accept the -Wno- form of unknown
1436     # warning options).
1437     optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1438     compile_prog "-Werror $optflag" ""
1439 }
1440
1441 for flag in $gcc_flags; do
1442     if cc_has_warning_flag $flag ; then
1443         QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1444     fi
1445 done
1446
1447 if test "$stack_protector" != "no"; then
1448   cat > $TMPC << EOF
1449 int main(int argc, char *argv[])
1450 {
1451     char arr[64], *p = arr, *c = argv[0];
1452     while (*c) {
1453         *p++ = *c++;
1454     }
1455     return 0;
1456 }
1457 EOF
1458   gcc_flags="-fstack-protector-strong -fstack-protector-all"
1459   sp_on=0
1460   for flag in $gcc_flags; do
1461     # We need to check both a compile and a link, since some compiler
1462     # setups fail only on a .c->.o compile and some only at link time
1463     if compile_object "-Werror $flag" &&
1464        compile_prog "-Werror $flag" ""; then
1465       QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1466       QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
1467       sp_on=1
1468       break
1469     fi
1470   done
1471   if test "$stack_protector" = yes; then
1472     if test $sp_on = 0; then
1473       error_exit "Stack protector not supported"
1474     fi
1475   fi
1476 fi
1477
1478 # Disable -Wmissing-braces on older compilers that warn even for
1479 # the "universal" C zero initializer {0}.
1480 cat > $TMPC << EOF
1481 struct {
1482   int a[2];
1483 } x = {0};
1484 EOF
1485 if compile_object "-Werror" "" ; then
1486   :
1487 else
1488   QEMU_CFLAGS="$QEMU_CFLAGS -Wno-missing-braces"
1489 fi
1490
1491 # Our module code doesn't support Windows
1492 if test "$modules" = "yes" && test "$mingw32" = "yes" ; then
1493   error_exit "Modules are not available for Windows"
1494 fi
1495
1496 # module_upgrades is only reasonable if modules are enabled
1497 if test "$modules" = "no" && test "$module_upgrades" = "yes" ; then
1498   error_exit "Can't enable module-upgrades as Modules are not enabled"
1499 fi
1500
1501 # Static linking is not possible with plugins, modules or PIE
1502 if test "$static" = "yes" ; then
1503   if test "$modules" = "yes" ; then
1504     error_exit "static and modules are mutually incompatible"
1505   fi
1506   if test "$plugins" = "yes"; then
1507     error_exit "static and plugins are mutually incompatible"
1508   else
1509     plugins="no"
1510   fi
1511 fi
1512 test "$plugins" = "" && plugins=yes
1513
1514 cat > $TMPC << EOF
1515
1516 #ifdef __linux__
1517 #  define THREAD __thread
1518 #else
1519 #  define THREAD
1520 #endif
1521 static THREAD int tls_var;
1522 int main(void) { return tls_var; }
1523 EOF
1524
1525 # Check we support -fno-pie and -no-pie first; we will need the former for
1526 # building ROMs, and both for everything if --disable-pie is passed.
1527 if compile_prog "-Werror -fno-pie" "-no-pie"; then
1528   CFLAGS_NOPIE="-fno-pie"
1529   LDFLAGS_NOPIE="-no-pie"
1530 fi
1531
1532 if test "$static" = "yes"; then
1533   if test "$pie" != "no" && compile_prog "-Werror -fPIE -DPIE" "-static-pie"; then
1534     CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
1535     QEMU_LDFLAGS="-static-pie $QEMU_LDFLAGS"
1536     pie="yes"
1537   elif test "$pie" = "yes"; then
1538     error_exit "-static-pie not available due to missing toolchain support"
1539   else
1540     QEMU_LDFLAGS="-static $QEMU_LDFLAGS"
1541     pie="no"
1542   fi
1543 elif test "$pie" = "no"; then
1544   CONFIGURE_CFLAGS="$CFLAGS_NOPIE $CONFIGURE_CFLAGS"
1545   CONFIGURE_LDFLAGS="$LDFLAGS_NOPIE $CONFIGURE_LDFLAGS"
1546 elif compile_prog "-Werror -fPIE -DPIE" "-pie"; then
1547   CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
1548   CONFIGURE_LDFLAGS="-pie $CONFIGURE_LDFLAGS"
1549   pie="yes"
1550 elif test "$pie" = "yes"; then
1551   error_exit "PIE not available due to missing toolchain support"
1552 else
1553   echo "Disabling PIE due to missing toolchain support"
1554   pie="no"
1555 fi
1556
1557 # Detect support for PT_GNU_RELRO + DT_BIND_NOW.
1558 # The combination is known as "full relro", because .got.plt is read-only too.
1559 if compile_prog "" "-Wl,-z,relro -Wl,-z,now" ; then
1560   QEMU_LDFLAGS="-Wl,-z,relro -Wl,-z,now $QEMU_LDFLAGS"
1561 fi
1562
1563 ##########################################
1564 # __sync_fetch_and_and requires at least -march=i486. Many toolchains
1565 # use i686 as default anyway, but for those that don't, an explicit
1566 # specification is necessary
1567
1568 if test "$cpu" = "i386"; then
1569   cat > $TMPC << EOF
1570 static int sfaa(int *ptr)
1571 {
1572   return __sync_fetch_and_and(ptr, 0);
1573 }
1574
1575 int main(void)
1576 {
1577   int val = 42;
1578   val = __sync_val_compare_and_swap(&val, 0, 1);
1579   sfaa(&val);
1580   return val;
1581 }
1582 EOF
1583   if ! compile_prog "" "" ; then
1584     QEMU_CFLAGS="-march=i486 $QEMU_CFLAGS"
1585   fi
1586 fi
1587
1588 if test "$tcg" = "enabled"; then
1589     git_submodules="$git_submodules tests/fp/berkeley-testfloat-3"
1590     git_submodules="$git_submodules tests/fp/berkeley-softfloat-3"
1591 fi
1592
1593 if test -z "${target_list+xxx}" ; then
1594     default_targets=yes
1595     for target in $default_target_list; do
1596         target_list="$target_list $target"
1597     done
1598     target_list="${target_list# }"
1599 else
1600     default_targets=no
1601     target_list=$(echo "$target_list" | sed -e 's/,/ /g')
1602     for target in $target_list; do
1603         # Check that we recognised the target name; this allows a more
1604         # friendly error message than if we let it fall through.
1605         case " $default_target_list " in
1606             *" $target "*)
1607                 ;;
1608             *)
1609                 error_exit "Unknown target name '$target'"
1610                 ;;
1611         esac
1612     done
1613 fi
1614
1615 # see if system emulation was really requested
1616 case " $target_list " in
1617   *"-softmmu "*) softmmu=yes
1618   ;;
1619   *) softmmu=no
1620   ;;
1621 esac
1622
1623 feature_not_found() {
1624   feature=$1
1625   remedy=$2
1626
1627   error_exit "User requested feature $feature" \
1628       "configure was not able to find it." \
1629       "$remedy"
1630 }
1631
1632 # ---
1633 # big/little endian test
1634 cat > $TMPC << EOF
1635 #include <stdio.h>
1636 short big_endian[] = { 0x4269, 0x4765, 0x4e64, 0x4961, 0x4e00, 0, };
1637 short little_endian[] = { 0x694c, 0x7454, 0x654c, 0x6e45, 0x6944, 0x6e41, 0, };
1638 int main(int argc, char *argv[])
1639 {
1640     return printf("%s %s\n", (char *)big_endian, (char *)little_endian);
1641 }
1642 EOF
1643
1644 if compile_prog ; then
1645     if strings -a $TMPE | grep -q BiGeNdIaN ; then
1646         bigendian="yes"
1647     elif strings -a $TMPE | grep -q LiTtLeEnDiAn ; then
1648         bigendian="no"
1649     else
1650         echo big/little test failed
1651         exit 1
1652     fi
1653 else
1654     echo big/little test failed
1655     exit 1
1656 fi
1657
1658 #########################################
1659 # vhost interdependencies and host support
1660
1661 # vhost backends
1662 if test "$vhost_user" = "yes" && test "$mingw32" = "yes"; then
1663   error_exit "vhost-user is not available on Windows"
1664 fi
1665 test "$vhost_vdpa" = "" && vhost_vdpa=$linux
1666 if test "$vhost_vdpa" = "yes" && test "$linux" != "yes"; then
1667   error_exit "vhost-vdpa is only available on Linux"
1668 fi
1669 test "$vhost_kernel" = "" && vhost_kernel=$linux
1670 if test "$vhost_kernel" = "yes" && test "$linux" != "yes"; then
1671   error_exit "vhost-kernel is only available on Linux"
1672 fi
1673
1674 # vhost-kernel devices
1675 test "$vhost_scsi" = "" && vhost_scsi=$vhost_kernel
1676 if test "$vhost_scsi" = "yes" && test "$vhost_kernel" != "yes"; then
1677   error_exit "--enable-vhost-scsi requires --enable-vhost-kernel"
1678 fi
1679 test "$vhost_vsock" = "" && vhost_vsock=$vhost_kernel
1680 if test "$vhost_vsock" = "yes" && test "$vhost_kernel" != "yes"; then
1681   error_exit "--enable-vhost-vsock requires --enable-vhost-kernel"
1682 fi
1683
1684 # vhost-user backends
1685 test "$vhost_net_user" = "" && vhost_net_user=$vhost_user
1686 if test "$vhost_net_user" = "yes" && test "$vhost_user" = "no"; then
1687   error_exit "--enable-vhost-net-user requires --enable-vhost-user"
1688 fi
1689 test "$vhost_crypto" = "" && vhost_crypto=$vhost_user
1690 if test "$vhost_crypto" = "yes" && test "$vhost_user" = "no"; then
1691   error_exit "--enable-vhost-crypto requires --enable-vhost-user"
1692 fi
1693 test "$vhost_user_fs" = "" && vhost_user_fs=$vhost_user
1694 if test "$vhost_user_fs" = "yes" && test "$vhost_user" = "no"; then
1695   error_exit "--enable-vhost-user-fs requires --enable-vhost-user"
1696 fi
1697 #vhost-vdpa backends
1698 test "$vhost_net_vdpa" = "" && vhost_net_vdpa=$vhost_vdpa
1699 if test "$vhost_net_vdpa" = "yes" && test "$vhost_vdpa" = "no"; then
1700   error_exit "--enable-vhost-net-vdpa requires --enable-vhost-vdpa"
1701 fi
1702
1703 # OR the vhost-kernel, vhost-vdpa and vhost-user values for simplicity
1704 if test "$vhost_net" = ""; then
1705   test "$vhost_net_user" = "yes" && vhost_net=yes
1706   test "$vhost_net_vdpa" = "yes" && vhost_net=yes
1707   test "$vhost_kernel" = "yes" && vhost_net=yes
1708 fi
1709
1710 ##########################################
1711 # pkg-config probe
1712
1713 if ! has "$pkg_config_exe"; then
1714   error_exit "pkg-config binary '$pkg_config_exe' not found"
1715 fi
1716
1717 ##########################################
1718 # xen probe
1719
1720 if test "$xen" != "disabled" ; then
1721   # Check whether Xen library path is specified via --extra-ldflags to avoid
1722   # overriding this setting with pkg-config output. If not, try pkg-config
1723   # to obtain all needed flags.
1724
1725   if ! echo $EXTRA_LDFLAGS | grep tools/libxc > /dev/null && \
1726      $pkg_config --exists xencontrol ; then
1727     xen_ctrl_version="$(printf '%d%02d%02d' \
1728       $($pkg_config --modversion xencontrol | sed 's/\./ /g') )"
1729     xen=enabled
1730     xen_pc="xencontrol xenstore xenforeignmemory xengnttab"
1731     xen_pc="$xen_pc xenevtchn xendevicemodel"
1732     if $pkg_config --exists xentoolcore; then
1733       xen_pc="$xen_pc xentoolcore"
1734     fi
1735     xen_cflags="$($pkg_config --cflags $xen_pc)"
1736     xen_libs="$($pkg_config --libs $xen_pc)"
1737   else
1738
1739     xen_libs="-lxenstore -lxenctrl"
1740     xen_stable_libs="-lxenforeignmemory -lxengnttab -lxenevtchn"
1741
1742     # First we test whether Xen headers and libraries are available.
1743     # If no, we are done and there is no Xen support.
1744     # If yes, more tests are run to detect the Xen version.
1745
1746     # Xen (any)
1747     cat > $TMPC <<EOF
1748 #include <xenctrl.h>
1749 int main(void) {
1750   return 0;
1751 }
1752 EOF
1753     if ! compile_prog "" "$xen_libs" ; then
1754       # Xen not found
1755       if test "$xen" = "enabled" ; then
1756         feature_not_found "xen" "Install xen devel"
1757       fi
1758       xen=disabled
1759
1760     # Xen unstable
1761     elif
1762         cat > $TMPC <<EOF &&
1763 #undef XC_WANT_COMPAT_DEVICEMODEL_API
1764 #define __XEN_TOOLS__
1765 #include <xendevicemodel.h>
1766 #include <xenforeignmemory.h>
1767 int main(void) {
1768   xendevicemodel_handle *xd;
1769   xenforeignmemory_handle *xfmem;
1770
1771   xd = xendevicemodel_open(0, 0);
1772   xendevicemodel_pin_memory_cacheattr(xd, 0, 0, 0, 0);
1773
1774   xfmem = xenforeignmemory_open(0, 0);
1775   xenforeignmemory_map_resource(xfmem, 0, 0, 0, 0, 0, NULL, 0, 0);
1776
1777   return 0;
1778 }
1779 EOF
1780         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs -lxentoolcore"
1781       then
1782       xen_stable_libs="-lxendevicemodel $xen_stable_libs -lxentoolcore"
1783       xen_ctrl_version=41100
1784       xen=enabled
1785     elif
1786         cat > $TMPC <<EOF &&
1787 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
1788 #include <xenforeignmemory.h>
1789 #include <xentoolcore.h>
1790 int main(void) {
1791   xenforeignmemory_handle *xfmem;
1792
1793   xfmem = xenforeignmemory_open(0, 0);
1794   xenforeignmemory_map2(xfmem, 0, 0, 0, 0, 0, 0, 0);
1795   xentoolcore_restrict_all(0);
1796
1797   return 0;
1798 }
1799 EOF
1800         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs -lxentoolcore"
1801       then
1802       xen_stable_libs="-lxendevicemodel $xen_stable_libs -lxentoolcore"
1803       xen_ctrl_version=41000
1804       xen=enabled
1805     elif
1806         cat > $TMPC <<EOF &&
1807 #undef XC_WANT_COMPAT_DEVICEMODEL_API
1808 #define __XEN_TOOLS__
1809 #include <xendevicemodel.h>
1810 int main(void) {
1811   xendevicemodel_handle *xd;
1812
1813   xd = xendevicemodel_open(0, 0);
1814   xendevicemodel_close(xd);
1815
1816   return 0;
1817 }
1818 EOF
1819         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs"
1820       then
1821       xen_stable_libs="-lxendevicemodel $xen_stable_libs"
1822       xen_ctrl_version=40900
1823       xen=enabled
1824     elif
1825         cat > $TMPC <<EOF &&
1826 /*
1827  * If we have stable libs the we don't want the libxc compat
1828  * layers, regardless of what CFLAGS we may have been given.
1829  *
1830  * Also, check if xengnttab_grant_copy_segment_t is defined and
1831  * grant copy operation is implemented.
1832  */
1833 #undef XC_WANT_COMPAT_EVTCHN_API
1834 #undef XC_WANT_COMPAT_GNTTAB_API
1835 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
1836 #include <xenctrl.h>
1837 #include <xenstore.h>
1838 #include <xenevtchn.h>
1839 #include <xengnttab.h>
1840 #include <xenforeignmemory.h>
1841 #include <stdint.h>
1842 #include <xen/hvm/hvm_info_table.h>
1843 #if !defined(HVM_MAX_VCPUS)
1844 # error HVM_MAX_VCPUS not defined
1845 #endif
1846 int main(void) {
1847   xc_interface *xc = NULL;
1848   xenforeignmemory_handle *xfmem;
1849   xenevtchn_handle *xe;
1850   xengnttab_handle *xg;
1851   xengnttab_grant_copy_segment_t* seg = NULL;
1852
1853   xs_daemon_open();
1854
1855   xc = xc_interface_open(0, 0, 0);
1856   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
1857   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
1858   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
1859   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
1860
1861   xfmem = xenforeignmemory_open(0, 0);
1862   xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);
1863
1864   xe = xenevtchn_open(0, 0);
1865   xenevtchn_fd(xe);
1866
1867   xg = xengnttab_open(0, 0);
1868   xengnttab_grant_copy(xg, 0, seg);
1869
1870   return 0;
1871 }
1872 EOF
1873         compile_prog "" "$xen_libs $xen_stable_libs"
1874       then
1875       xen_ctrl_version=40800
1876       xen=enabled
1877     elif
1878         cat > $TMPC <<EOF &&
1879 /*
1880  * If we have stable libs the we don't want the libxc compat
1881  * layers, regardless of what CFLAGS we may have been given.
1882  */
1883 #undef XC_WANT_COMPAT_EVTCHN_API
1884 #undef XC_WANT_COMPAT_GNTTAB_API
1885 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
1886 #include <xenctrl.h>
1887 #include <xenstore.h>
1888 #include <xenevtchn.h>
1889 #include <xengnttab.h>
1890 #include <xenforeignmemory.h>
1891 #include <stdint.h>
1892 #include <xen/hvm/hvm_info_table.h>
1893 #if !defined(HVM_MAX_VCPUS)
1894 # error HVM_MAX_VCPUS not defined
1895 #endif
1896 int main(void) {
1897   xc_interface *xc = NULL;
1898   xenforeignmemory_handle *xfmem;
1899   xenevtchn_handle *xe;
1900   xengnttab_handle *xg;
1901
1902   xs_daemon_open();
1903
1904   xc = xc_interface_open(0, 0, 0);
1905   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
1906   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
1907   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
1908   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
1909
1910   xfmem = xenforeignmemory_open(0, 0);
1911   xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);
1912
1913   xe = xenevtchn_open(0, 0);
1914   xenevtchn_fd(xe);
1915
1916   xg = xengnttab_open(0, 0);
1917   xengnttab_map_grant_ref(xg, 0, 0, 0);
1918
1919   return 0;
1920 }
1921 EOF
1922         compile_prog "" "$xen_libs $xen_stable_libs"
1923       then
1924       xen_ctrl_version=40701
1925       xen=enabled
1926
1927     # Xen 4.6
1928     elif
1929         cat > $TMPC <<EOF &&
1930 #include <xenctrl.h>
1931 #include <xenstore.h>
1932 #include <stdint.h>
1933 #include <xen/hvm/hvm_info_table.h>
1934 #if !defined(HVM_MAX_VCPUS)
1935 # error HVM_MAX_VCPUS not defined
1936 #endif
1937 int main(void) {
1938   xc_interface *xc;
1939   xs_daemon_open();
1940   xc = xc_interface_open(0, 0, 0);
1941   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
1942   xc_gnttab_open(NULL, 0);
1943   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
1944   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
1945   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
1946   xc_reserved_device_memory_map(xc, 0, 0, 0, 0, NULL, 0);
1947   return 0;
1948 }
1949 EOF
1950         compile_prog "" "$xen_libs"
1951       then
1952       xen_ctrl_version=40600
1953       xen=enabled
1954
1955     # Xen 4.5
1956     elif
1957         cat > $TMPC <<EOF &&
1958 #include <xenctrl.h>
1959 #include <xenstore.h>
1960 #include <stdint.h>
1961 #include <xen/hvm/hvm_info_table.h>
1962 #if !defined(HVM_MAX_VCPUS)
1963 # error HVM_MAX_VCPUS not defined
1964 #endif
1965 int main(void) {
1966   xc_interface *xc;
1967   xs_daemon_open();
1968   xc = xc_interface_open(0, 0, 0);
1969   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
1970   xc_gnttab_open(NULL, 0);
1971   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
1972   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
1973   xc_hvm_create_ioreq_server(xc, 0, 0, NULL);
1974   return 0;
1975 }
1976 EOF
1977         compile_prog "" "$xen_libs"
1978       then
1979       xen_ctrl_version=40500
1980       xen=enabled
1981
1982     elif
1983         cat > $TMPC <<EOF &&
1984 #include <xenctrl.h>
1985 #include <xenstore.h>
1986 #include <stdint.h>
1987 #include <xen/hvm/hvm_info_table.h>
1988 #if !defined(HVM_MAX_VCPUS)
1989 # error HVM_MAX_VCPUS not defined
1990 #endif
1991 int main(void) {
1992   xc_interface *xc;
1993   xs_daemon_open();
1994   xc = xc_interface_open(0, 0, 0);
1995   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
1996   xc_gnttab_open(NULL, 0);
1997   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
1998   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
1999   return 0;
2000 }
2001 EOF
2002         compile_prog "" "$xen_libs"
2003       then
2004       xen_ctrl_version=40200
2005       xen=enabled
2006
2007     else
2008       if test "$xen" = "enabled" ; then
2009         feature_not_found "xen (unsupported version)" \
2010                           "Install a supported xen (xen 4.2 or newer)"
2011       fi
2012       xen=disabled
2013     fi
2014
2015     if test "$xen" = enabled; then
2016       if test $xen_ctrl_version -ge 40701  ; then
2017         xen_libs="$xen_libs $xen_stable_libs "
2018       fi
2019     fi
2020   fi
2021 fi
2022
2023 ##########################################
2024 # RDMA needs OpenFabrics libraries
2025 if test "$rdma" != "no" ; then
2026   cat > $TMPC <<EOF
2027 #include <rdma/rdma_cma.h>
2028 int main(void) { return 0; }
2029 EOF
2030   rdma_libs="-lrdmacm -libverbs -libumad"
2031   if compile_prog "" "$rdma_libs" ; then
2032     rdma="yes"
2033   else
2034     if test "$rdma" = "yes" ; then
2035         error_exit \
2036             " OpenFabrics librdmacm/libibverbs/libibumad not present." \
2037             " Your options:" \
2038             "  (1) Fast: Install infiniband packages (devel) from your distro." \
2039             "  (2) Cleanest: Install libraries from www.openfabrics.org" \
2040             "  (3) Also: Install softiwarp if you don't have RDMA hardware"
2041     fi
2042     rdma="no"
2043   fi
2044 fi
2045
2046 ##########################################
2047 # PVRDMA detection
2048
2049 cat > $TMPC <<EOF &&
2050 #include <sys/mman.h>
2051
2052 int
2053 main(void)
2054 {
2055     char buf = 0;
2056     void *addr = &buf;
2057     addr = mremap(addr, 0, 1, MREMAP_MAYMOVE | MREMAP_FIXED);
2058
2059     return 0;
2060 }
2061 EOF
2062
2063 if test "$rdma" = "yes" ; then
2064     case "$pvrdma" in
2065     "")
2066         if compile_prog "" ""; then
2067             pvrdma="yes"
2068         else
2069             pvrdma="no"
2070         fi
2071         ;;
2072     "yes")
2073         if ! compile_prog "" ""; then
2074             error_exit "PVRDMA is not supported since mremap is not implemented"
2075         fi
2076         pvrdma="yes"
2077         ;;
2078     "no")
2079         pvrdma="no"
2080         ;;
2081     esac
2082 else
2083     if test "$pvrdma" = "yes" ; then
2084         error_exit "PVRDMA requires rdma suppport"
2085     fi
2086     pvrdma="no"
2087 fi
2088
2089 # Let's see if enhanced reg_mr is supported
2090 if test "$pvrdma" = "yes" ; then
2091
2092 cat > $TMPC <<EOF &&
2093 #include <infiniband/verbs.h>
2094
2095 int
2096 main(void)
2097 {
2098     struct ibv_mr *mr;
2099     struct ibv_pd *pd = NULL;
2100     size_t length = 10;
2101     uint64_t iova = 0;
2102     int access = 0;
2103     void *addr = NULL;
2104
2105     mr = ibv_reg_mr_iova(pd, addr, length, iova, access);
2106
2107     ibv_dereg_mr(mr);
2108
2109     return 0;
2110 }
2111 EOF
2112     if ! compile_prog "" "-libverbs"; then
2113         QEMU_CFLAGS="$QEMU_CFLAGS -DLEGACY_RDMA_REG_MR"
2114     fi
2115 fi
2116
2117 ##########################################
2118 # glib support probe
2119
2120 glib_req_ver=2.56
2121 glib_modules=gthread-2.0
2122 if test "$modules" = yes; then
2123     glib_modules="$glib_modules gmodule-export-2.0"
2124 elif test "$plugins" = "yes"; then
2125     glib_modules="$glib_modules gmodule-no-export-2.0"
2126 fi
2127
2128 for i in $glib_modules; do
2129     if $pkg_config --atleast-version=$glib_req_ver $i; then
2130         glib_cflags=$($pkg_config --cflags $i)
2131         glib_libs=$($pkg_config --libs $i)
2132     else
2133         error_exit "glib-$glib_req_ver $i is required to compile QEMU"
2134     fi
2135 done
2136
2137 # This workaround is required due to a bug in pkg-config file for glib as it
2138 # doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
2139
2140 if test "$static" = yes && test "$mingw32" = yes; then
2141     glib_cflags="-DGLIB_STATIC_COMPILATION $glib_cflags"
2142 fi
2143
2144 if ! test "$gio" = "no"; then
2145     pass=no
2146     if $pkg_config --atleast-version=$glib_req_ver gio-2.0; then
2147         gio_cflags=$($pkg_config --cflags gio-2.0)
2148         gio_libs=$($pkg_config --libs gio-2.0)
2149         gdbus_codegen=$($pkg_config --variable=gdbus_codegen gio-2.0)
2150         if ! has "$gdbus_codegen"; then
2151             gdbus_codegen=
2152         fi
2153         # Check that the libraries actually work -- Ubuntu 18.04 ships
2154         # with pkg-config --static --libs data for gio-2.0 that is missing
2155         # -lblkid and will give a link error.
2156         cat > $TMPC <<EOF
2157 #include <gio/gio.h>
2158 int main(void)
2159 {
2160     g_dbus_proxy_new_sync(0, 0, 0, 0, 0, 0, 0, 0);
2161     return 0;
2162 }
2163 EOF
2164         if compile_prog "$gio_cflags" "$gio_libs" ; then
2165             pass=yes
2166         else
2167             pass=no
2168         fi
2169
2170         if test "$pass" = "yes" &&
2171             $pkg_config --atleast-version=$glib_req_ver gio-unix-2.0; then
2172             gio_cflags="$gio_cflags $($pkg_config --cflags gio-unix-2.0)"
2173             gio_libs="$gio_libs $($pkg_config --libs gio-unix-2.0)"
2174         fi
2175     fi
2176
2177     if test "$pass" = "no"; then
2178         if test "$gio" = "yes"; then
2179             feature_not_found "gio" "Install libgio >= 2.0"
2180         else
2181             gio=no
2182         fi
2183     else
2184         gio=yes
2185     fi
2186 fi
2187
2188 # Sanity check that the current size_t matches the
2189 # size that glib thinks it should be. This catches
2190 # problems on multi-arch where people try to build
2191 # 32-bit QEMU while pointing at 64-bit glib headers
2192 cat > $TMPC <<EOF
2193 #include <glib.h>
2194 #include <unistd.h>
2195
2196 #define QEMU_BUILD_BUG_ON(x) \
2197   typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
2198
2199 int main(void) {
2200    QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
2201    return 0;
2202 }
2203 EOF
2204
2205 if ! compile_prog "$glib_cflags" "$glib_libs" ; then
2206     error_exit "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T."\
2207                "You probably need to set PKG_CONFIG_LIBDIR"\
2208                "to point to the right pkg-config files for your"\
2209                "build target"
2210 fi
2211
2212 # Silence clang warnings triggered by glib < 2.57.2
2213 cat > $TMPC << EOF
2214 #include <glib.h>
2215 typedef struct Foo {
2216     int i;
2217 } Foo;
2218 static void foo_free(Foo *f)
2219 {
2220     g_free(f);
2221 }
2222 G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free);
2223 int main(void) { return 0; }
2224 EOF
2225 if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
2226     if cc_has_warning_flag "-Wno-unused-function"; then
2227         glib_cflags="$glib_cflags -Wno-unused-function"
2228         CONFIGURE_CFLAGS="$CONFIGURE_CFLAGS -Wno-unused-function"
2229     fi
2230 fi
2231
2232 ##########################################
2233 # SHA command probe for modules
2234 if test "$modules" = yes; then
2235     shacmd_probe="sha1sum sha1 shasum"
2236     for c in $shacmd_probe; do
2237         if has $c; then
2238             shacmd="$c"
2239             break
2240         fi
2241     done
2242     if test "$shacmd" = ""; then
2243         error_exit "one of the checksum commands is required to enable modules: $shacmd_probe"
2244     fi
2245 fi
2246
2247 ##########################################
2248 # fdt probe
2249
2250 case "$fdt" in
2251   auto | enabled | internal)
2252     # Simpler to always update submodule, even if not needed.
2253     git_submodules="${git_submodules} dtc"
2254     ;;
2255 esac
2256
2257 ##########################################
2258 # opengl probe (for sdl2, gtk)
2259
2260 if test "$opengl" != "no" ; then
2261   epoxy=no
2262   if $pkg_config epoxy; then
2263     cat > $TMPC << EOF
2264 #include <epoxy/egl.h>
2265 int main(void) { return 0; }
2266 EOF
2267     if compile_prog "" "" ; then
2268       epoxy=yes
2269     fi
2270   fi
2271
2272   if test "$epoxy" = "yes" ; then
2273     opengl_cflags="$($pkg_config --cflags epoxy)"
2274     opengl_libs="$($pkg_config --libs epoxy)"
2275     opengl=yes
2276   else
2277     if test "$opengl" = "yes" ; then
2278       feature_not_found "opengl" "Please install epoxy with EGL"
2279     fi
2280     opengl_cflags=""
2281     opengl_libs=""
2282     opengl=no
2283   fi
2284 fi
2285
2286 # check for usbfs
2287 have_usbfs=no
2288 if test "$linux_user" = "yes"; then
2289   cat > $TMPC << EOF
2290 #include <linux/usbdevice_fs.h>
2291
2292 #ifndef USBDEVFS_GET_CAPABILITIES
2293 #error "USBDEVFS_GET_CAPABILITIES undefined"
2294 #endif
2295
2296 #ifndef USBDEVFS_DISCONNECT_CLAIM
2297 #error "USBDEVFS_DISCONNECT_CLAIM undefined"
2298 #endif
2299
2300 int main(void)
2301 {
2302     return 0;
2303 }
2304 EOF
2305   if compile_prog "" ""; then
2306     have_usbfs=yes
2307   fi
2308 fi
2309
2310 ##########################################
2311 # capstone
2312
2313 case "$capstone" in
2314   auto | enabled | internal)
2315     # Simpler to always update submodule, even if not needed.
2316     git_submodules="${git_submodules} capstone"
2317     ;;
2318 esac
2319
2320 ##########################################
2321 # check and set a backend for coroutine
2322
2323 # We prefer ucontext, but it's not always possible. The fallback
2324 # is sigcontext. On Windows the only valid backend is the Windows
2325 # specific one.
2326
2327 ucontext_works=no
2328 if test "$darwin" != "yes"; then
2329   cat > $TMPC << EOF
2330 #include <ucontext.h>
2331 #ifdef __stub_makecontext
2332 #error Ignoring glibc stub makecontext which will always fail
2333 #endif
2334 int main(void) { makecontext(0, 0, 0); return 0; }
2335 EOF
2336   if compile_prog "" "" ; then
2337     ucontext_works=yes
2338   fi
2339 fi
2340
2341 if test "$coroutine" = ""; then
2342   if test "$mingw32" = "yes"; then
2343     coroutine=win32
2344   elif test "$ucontext_works" = "yes"; then
2345     coroutine=ucontext
2346   else
2347     coroutine=sigaltstack
2348   fi
2349 else
2350   case $coroutine in
2351   windows)
2352     if test "$mingw32" != "yes"; then
2353       error_exit "'windows' coroutine backend only valid for Windows"
2354     fi
2355     # Unfortunately the user visible backend name doesn't match the
2356     # coroutine-*.c filename for this case, so we have to adjust it here.
2357     coroutine=win32
2358     ;;
2359   ucontext)
2360     if test "$ucontext_works" != "yes"; then
2361       feature_not_found "ucontext"
2362     fi
2363     ;;
2364   sigaltstack)
2365     if test "$mingw32" = "yes"; then
2366       error_exit "only the 'windows' coroutine backend is valid for Windows"
2367     fi
2368     ;;
2369   *)
2370     error_exit "unknown coroutine backend $coroutine"
2371     ;;
2372   esac
2373 fi
2374
2375 ##################################################
2376 # SafeStack
2377
2378
2379 if test "$safe_stack" = "yes"; then
2380 cat > $TMPC << EOF
2381 int main(int argc, char *argv[])
2382 {
2383 #if ! __has_feature(safe_stack)
2384 #error SafeStack Disabled
2385 #endif
2386     return 0;
2387 }
2388 EOF
2389   flag="-fsanitize=safe-stack"
2390   # Check that safe-stack is supported and enabled.
2391   if compile_prog "-Werror $flag" "$flag"; then
2392     # Flag needed both at compilation and at linking
2393     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
2394     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
2395   else
2396     error_exit "SafeStack not supported by your compiler"
2397   fi
2398   if test "$coroutine" != "ucontext"; then
2399     error_exit "SafeStack is only supported by the coroutine backend ucontext"
2400   fi
2401 else
2402 cat > $TMPC << EOF
2403 int main(int argc, char *argv[])
2404 {
2405 #if defined(__has_feature)
2406 #if __has_feature(safe_stack)
2407 #error SafeStack Enabled
2408 #endif
2409 #endif
2410     return 0;
2411 }
2412 EOF
2413 if test "$safe_stack" = "no"; then
2414   # Make sure that safe-stack is disabled
2415   if ! compile_prog "-Werror" ""; then
2416     # SafeStack was already enabled, try to explicitly remove the feature
2417     flag="-fno-sanitize=safe-stack"
2418     if ! compile_prog "-Werror $flag" "$flag"; then
2419       error_exit "Configure cannot disable SafeStack"
2420     fi
2421     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
2422     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
2423   fi
2424 else # "$safe_stack" = ""
2425   # Set safe_stack to yes or no based on pre-existing flags
2426   if compile_prog "-Werror" ""; then
2427     safe_stack="no"
2428   else
2429     safe_stack="yes"
2430     if test "$coroutine" != "ucontext"; then
2431       error_exit "SafeStack is only supported by the coroutine backend ucontext"
2432     fi
2433   fi
2434 fi
2435 fi
2436
2437 ########################################
2438 # check if __[u]int128_t is usable.
2439
2440 int128=no
2441 cat > $TMPC << EOF
2442 __int128_t a;
2443 __uint128_t b;
2444 int main (void) {
2445   a = a + b;
2446   b = a * b;
2447   a = a * a;
2448   return 0;
2449 }
2450 EOF
2451 if compile_prog "" "" ; then
2452     int128=yes
2453 fi
2454
2455 #########################################
2456 # See if 128-bit atomic operations are supported.
2457
2458 atomic128=no
2459 if test "$int128" = "yes"; then
2460   cat > $TMPC << EOF
2461 int main(void)
2462 {
2463   unsigned __int128 x = 0, y = 0;
2464   y = __atomic_load(&x, 0);
2465   __atomic_store(&x, y, 0);
2466   __atomic_compare_exchange(&x, &y, x, 0, 0, 0);
2467   return 0;
2468 }
2469 EOF
2470   if compile_prog "" "" ; then
2471     atomic128=yes
2472   fi
2473 fi
2474
2475 cmpxchg128=no
2476 if test "$int128" = yes && test "$atomic128" = no; then
2477   cat > $TMPC << EOF
2478 int main(void)
2479 {
2480   unsigned __int128 x = 0, y = 0;
2481   __sync_val_compare_and_swap_16(&x, y, x);
2482   return 0;
2483 }
2484 EOF
2485   if compile_prog "" "" ; then
2486     cmpxchg128=yes
2487   fi
2488 fi
2489
2490 ########################################
2491 # check if ccache is interfering with
2492 # semantic analysis of macros
2493
2494 unset CCACHE_CPP2
2495 ccache_cpp2=no
2496 cat > $TMPC << EOF
2497 static const int Z = 1;
2498 #define fn() ({ Z; })
2499 #define TAUT(X) ((X) == Z)
2500 #define PAREN(X, Y) (X == Y)
2501 #define ID(X) (X)
2502 int main(int argc, char *argv[])
2503 {
2504     int x = 0, y = 0;
2505     x = ID(x);
2506     x = fn();
2507     fn();
2508     if (PAREN(x, y)) return 0;
2509     if (TAUT(Z)) return 0;
2510     return 0;
2511 }
2512 EOF
2513
2514 if ! compile_object "-Werror"; then
2515     ccache_cpp2=yes
2516 fi
2517
2518 #################################################
2519 # clang does not support glibc + FORTIFY_SOURCE.
2520
2521 if test "$fortify_source" != "no"; then
2522   if echo | $cc -dM -E - | grep __clang__ > /dev/null 2>&1 ; then
2523     fortify_source="no";
2524   elif test -n "$cxx" && has $cxx &&
2525        echo | $cxx -dM -E - | grep __clang__ >/dev/null 2>&1 ; then
2526     fortify_source="no";
2527   else
2528     fortify_source="yes"
2529   fi
2530 fi
2531
2532 ##########################################
2533 # checks for sanitizers
2534
2535 have_asan=no
2536 have_ubsan=no
2537 have_asan_iface_h=no
2538 have_asan_iface_fiber=no
2539
2540 if test "$sanitizers" = "yes" ; then
2541   write_c_skeleton
2542   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" ""; then
2543       have_asan=yes
2544   fi
2545
2546   # we could use a simple skeleton for flags checks, but this also
2547   # detect the static linking issue of ubsan, see also:
2548   # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84285
2549   cat > $TMPC << EOF
2550 #include <stdlib.h>
2551 int main(void) {
2552     void *tmp = malloc(10);
2553     if (tmp != NULL) {
2554         return *(int *)(tmp + 2);
2555     }
2556     return 1;
2557 }
2558 EOF
2559   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=undefined" ""; then
2560       have_ubsan=yes
2561   fi
2562
2563   if check_include "sanitizer/asan_interface.h" ; then
2564       have_asan_iface_h=yes
2565   fi
2566
2567   cat > $TMPC << EOF
2568 #include <sanitizer/asan_interface.h>
2569 int main(void) {
2570   __sanitizer_start_switch_fiber(0, 0, 0);
2571   return 0;
2572 }
2573 EOF
2574   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" "" ; then
2575       have_asan_iface_fiber=yes
2576   fi
2577 fi
2578
2579 # Thread sanitizer is, for now, much noisier than the other sanitizers;
2580 # keep it separate until that is not the case.
2581 if test "$tsan" = "yes" && test "$sanitizers" = "yes"; then
2582   error_exit "TSAN is not supported with other sanitiziers."
2583 fi
2584 have_tsan=no
2585 have_tsan_iface_fiber=no
2586 if test "$tsan" = "yes" ; then
2587   write_c_skeleton
2588   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
2589       have_tsan=yes
2590   fi
2591   cat > $TMPC << EOF
2592 #include <sanitizer/tsan_interface.h>
2593 int main(void) {
2594   __tsan_create_fiber(0);
2595   return 0;
2596 }
2597 EOF
2598   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
2599       have_tsan_iface_fiber=yes
2600   fi
2601 fi
2602
2603 ##########################################
2604 # check for slirp
2605
2606 case "$slirp" in
2607   auto | enabled | internal)
2608     # Simpler to always update submodule, even if not needed.
2609     git_submodules="${git_submodules} slirp"
2610     ;;
2611 esac
2612
2613 ##########################################
2614 # check for usable __NR_keyctl syscall
2615
2616 if test "$linux" = "yes" ; then
2617
2618     have_keyring=no
2619     cat > $TMPC << EOF
2620 #include <errno.h>
2621 #include <asm/unistd.h>
2622 #include <linux/keyctl.h>
2623 #include <unistd.h>
2624 int main(void) {
2625     return syscall(__NR_keyctl, KEYCTL_READ, 0, NULL, NULL, 0);
2626 }
2627 EOF
2628     if compile_prog "" "" ; then
2629         have_keyring=yes
2630     fi
2631 fi
2632 if test "$secret_keyring" != "no"
2633 then
2634     if test "$have_keyring" = "yes"
2635     then
2636         secret_keyring=yes
2637     else
2638         if test "$secret_keyring" = "yes"
2639         then
2640             error_exit "syscall __NR_keyctl requested, \
2641 but not implemented on your system"
2642         else
2643             secret_keyring=no
2644         fi
2645     fi
2646 fi
2647
2648 ##########################################
2649 # End of CC checks
2650 # After here, no more $cc or $ld runs
2651
2652 write_c_skeleton
2653
2654 if test "$gcov" = "yes" ; then
2655   :
2656 elif test "$fortify_source" = "yes" ; then
2657   QEMU_CFLAGS="-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $QEMU_CFLAGS"
2658   debug=no
2659 fi
2660
2661 case "$ARCH" in
2662 alpha)
2663   # Ensure there's only a single GP
2664   QEMU_CFLAGS="-msmall-data $QEMU_CFLAGS"
2665 ;;
2666 esac
2667
2668 if test "$have_asan" = "yes"; then
2669   QEMU_CFLAGS="-fsanitize=address $QEMU_CFLAGS"
2670   QEMU_LDFLAGS="-fsanitize=address $QEMU_LDFLAGS"
2671   if test "$have_asan_iface_h" = "no" ; then
2672       echo "ASAN build enabled, but ASAN header missing." \
2673            "Without code annotation, the report may be inferior."
2674   elif test "$have_asan_iface_fiber" = "no" ; then
2675       echo "ASAN build enabled, but ASAN header is too old." \
2676            "Without code annotation, the report may be inferior."
2677   fi
2678 fi
2679 if test "$have_tsan" = "yes" ; then
2680   if test "$have_tsan_iface_fiber" = "yes" ; then
2681     QEMU_CFLAGS="-fsanitize=thread $QEMU_CFLAGS"
2682     QEMU_LDFLAGS="-fsanitize=thread $QEMU_LDFLAGS"
2683   else
2684     error_exit "Cannot enable TSAN due to missing fiber annotation interface."
2685   fi
2686 elif test "$tsan" = "yes" ; then
2687   error_exit "Cannot enable TSAN due to missing sanitize thread interface."
2688 fi
2689 if test "$have_ubsan" = "yes"; then
2690   QEMU_CFLAGS="-fsanitize=undefined $QEMU_CFLAGS"
2691   QEMU_LDFLAGS="-fsanitize=undefined $QEMU_LDFLAGS"
2692 fi
2693
2694 ##########################################
2695
2696 # Exclude --warn-common with TSan to suppress warnings from the TSan libraries.
2697 if test "$solaris" = "no" && test "$tsan" = "no"; then
2698     if $ld --version 2>/dev/null | grep "GNU ld" >/dev/null 2>/dev/null ; then
2699         QEMU_LDFLAGS="-Wl,--warn-common $QEMU_LDFLAGS"
2700     fi
2701 fi
2702
2703 # Use ASLR, no-SEH and DEP if available
2704 if test "$mingw32" = "yes" ; then
2705     flags="--no-seh --nxcompat"
2706
2707     # Disable ASLR for debug builds to allow debugging with gdb
2708     if test "$debug" = "no" ; then
2709         flags="--dynamicbase $flags"
2710     fi
2711
2712     for flag in $flags; do
2713         if ld_has $flag ; then
2714             QEMU_LDFLAGS="-Wl,$flag $QEMU_LDFLAGS"
2715         fi
2716     done
2717 fi
2718
2719 # Guest agent Windows MSI package
2720
2721 if test "$QEMU_GA_MANUFACTURER" = ""; then
2722   QEMU_GA_MANUFACTURER=QEMU
2723 fi
2724 if test "$QEMU_GA_DISTRO" = ""; then
2725   QEMU_GA_DISTRO=Linux
2726 fi
2727 if test "$QEMU_GA_VERSION" = ""; then
2728     QEMU_GA_VERSION=$(cat $source_path/VERSION)
2729 fi
2730
2731 QEMU_GA_MSI_MINGW_DLL_PATH="$($pkg_config --variable=prefix glib-2.0)/bin"
2732
2733 # Mac OS X ships with a broken assembler
2734 roms=
2735 if { test "$cpu" = "i386" || test "$cpu" = "x86_64"; } && \
2736         test "$targetos" != "darwin" && test "$targetos" != "sunos" && \
2737         test "$targetos" != "haiku" && test "$softmmu" = yes ; then
2738     # Different host OS linkers have different ideas about the name of the ELF
2739     # emulation. Linux and OpenBSD/amd64 use 'elf_i386'; FreeBSD uses the _fbsd
2740     # variant; OpenBSD/i386 uses the _obsd variant; and Windows uses i386pe.
2741     for emu in elf_i386 elf_i386_fbsd elf_i386_obsd i386pe; do
2742         if "$ld" -verbose 2>&1 | grep -q "^[[:space:]]*$emu[[:space:]]*$"; then
2743             ld_i386_emulation="$emu"
2744             roms="optionrom"
2745             break
2746         fi
2747     done
2748 fi
2749
2750 # Only build s390-ccw bios if we're on s390x and the compiler has -march=z900
2751 # or -march=z10 (which is the lowest architecture level that Clang supports)
2752 if test "$cpu" = "s390x" ; then
2753   write_c_skeleton
2754   compile_prog "-march=z900" ""
2755   has_z900=$?
2756   if [ $has_z900 = 0 ] || compile_object "-march=z10 -msoft-float -Werror"; then
2757     if [ $has_z900 != 0 ]; then
2758       echo "WARNING: Your compiler does not support the z900!"
2759       echo "         The s390-ccw bios will only work with guest CPUs >= z10."
2760     fi
2761     roms="$roms s390-ccw"
2762     # SLOF is required for building the s390-ccw firmware on s390x,
2763     # since it is using the libnet code from SLOF for network booting.
2764     git_submodules="${git_submodules} roms/SLOF"
2765   fi
2766 fi
2767
2768 # Check that the C++ compiler exists and works with the C compiler.
2769 # All the QEMU_CXXFLAGS are based on QEMU_CFLAGS. Keep this at the end to don't miss any other that could be added.
2770 if has $cxx; then
2771     cat > $TMPC <<EOF
2772 int c_function(void);
2773 int main(void) { return c_function(); }
2774 EOF
2775
2776     compile_object
2777
2778     cat > $TMPCXX <<EOF
2779 extern "C" {
2780    int c_function(void);
2781 }
2782 int c_function(void) { return 42; }
2783 EOF
2784
2785     update_cxxflags
2786
2787     if do_cxx $CXXFLAGS $EXTRA_CXXFLAGS $CONFIGURE_CXXFLAGS $QEMU_CXXFLAGS -o $TMPE $TMPCXX $TMPO $QEMU_LDFLAGS; then
2788         # C++ compiler $cxx works ok with C compiler $cc
2789         :
2790     else
2791         echo "C++ compiler $cxx does not work with C compiler $cc"
2792         echo "Disabling C++ specific optional code"
2793         cxx=
2794     fi
2795 else
2796     echo "No C++ compiler available; disabling C++ specific optional code"
2797     cxx=
2798 fi
2799
2800 if !(GIT="$git" "$source_path/scripts/git-submodule.sh" "$git_submodules_action" "$git_submodules"); then
2801     exit 1
2802 fi
2803
2804 config_host_mak="config-host.mak"
2805
2806 echo "# Automatically generated by configure - do not modify" > $config_host_mak
2807 echo >> $config_host_mak
2808
2809 echo all: >> $config_host_mak
2810 echo "GIT=$git" >> $config_host_mak
2811 echo "GIT_SUBMODULES=$git_submodules" >> $config_host_mak
2812 echo "GIT_SUBMODULES_ACTION=$git_submodules_action" >> $config_host_mak
2813
2814 if test "$debug_tcg" = "yes" ; then
2815   echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
2816 fi
2817 if test "$mingw32" = "yes" ; then
2818   echo "CONFIG_WIN32=y" >> $config_host_mak
2819   echo "QEMU_GA_MSI_MINGW_DLL_PATH=${QEMU_GA_MSI_MINGW_DLL_PATH}" >> $config_host_mak
2820   echo "QEMU_GA_MANUFACTURER=${QEMU_GA_MANUFACTURER}" >> $config_host_mak
2821   echo "QEMU_GA_DISTRO=${QEMU_GA_DISTRO}" >> $config_host_mak
2822   echo "QEMU_GA_VERSION=${QEMU_GA_VERSION}" >> $config_host_mak
2823 else
2824   echo "CONFIG_POSIX=y" >> $config_host_mak
2825 fi
2826
2827 if test "$linux" = "yes" ; then
2828   echo "CONFIG_LINUX=y" >> $config_host_mak
2829 fi
2830
2831 if test "$darwin" = "yes" ; then
2832   echo "CONFIG_DARWIN=y" >> $config_host_mak
2833 fi
2834
2835 if test "$solaris" = "yes" ; then
2836   echo "CONFIG_SOLARIS=y" >> $config_host_mak
2837 fi
2838 if test "$static" = "yes" ; then
2839   echo "CONFIG_STATIC=y" >> $config_host_mak
2840 fi
2841 echo "CONFIG_BDRV_RW_WHITELIST=$block_drv_rw_whitelist" >> $config_host_mak
2842 echo "CONFIG_BDRV_RO_WHITELIST=$block_drv_ro_whitelist" >> $config_host_mak
2843 qemu_version=$(head $source_path/VERSION)
2844 echo "PKGVERSION=$pkgversion" >>$config_host_mak
2845 echo "SRC_PATH=$source_path" >> $config_host_mak
2846 echo "TARGET_DIRS=$target_list" >> $config_host_mak
2847 if test "$modules" = "yes"; then
2848   # $shacmd can generate a hash started with digit, which the compiler doesn't
2849   # like as an symbol. So prefix it with an underscore
2850   echo "CONFIG_STAMP=_$( (echo $qemu_version; echo $pkgversion; cat $0) | $shacmd - | cut -f1 -d\ )" >> $config_host_mak
2851   echo "CONFIG_MODULES=y" >> $config_host_mak
2852 fi
2853 if test "$module_upgrades" = "yes"; then
2854   echo "CONFIG_MODULE_UPGRADES=y" >> $config_host_mak
2855 fi
2856 if test "$have_usbfs" = "yes" ; then
2857   echo "CONFIG_USBFS=y" >> $config_host_mak
2858 fi
2859 if test "$gio" = "yes" ; then
2860     echo "CONFIG_GIO=y" >> $config_host_mak
2861     echo "GIO_CFLAGS=$gio_cflags" >> $config_host_mak
2862     echo "GIO_LIBS=$gio_libs" >> $config_host_mak
2863 fi
2864 if test "$gdbus_codegen" != "" ; then
2865     echo "GDBUS_CODEGEN=$gdbus_codegen" >> $config_host_mak
2866 fi
2867 echo "CONFIG_TLS_PRIORITY=\"$tls_priority\"" >> $config_host_mak
2868
2869 if test "$xen" = "enabled" ; then
2870   echo "CONFIG_XEN_BACKEND=y" >> $config_host_mak
2871   echo "CONFIG_XEN_CTRL_INTERFACE_VERSION=$xen_ctrl_version" >> $config_host_mak
2872   echo "XEN_CFLAGS=$xen_cflags" >> $config_host_mak
2873   echo "XEN_LIBS=$xen_libs" >> $config_host_mak
2874 fi
2875 if test "$vhost_scsi" = "yes" ; then
2876   echo "CONFIG_VHOST_SCSI=y" >> $config_host_mak
2877 fi
2878 if test "$vhost_net" = "yes" ; then
2879   echo "CONFIG_VHOST_NET=y" >> $config_host_mak
2880 fi
2881 if test "$vhost_net_user" = "yes" ; then
2882   echo "CONFIG_VHOST_NET_USER=y" >> $config_host_mak
2883 fi
2884 if test "$vhost_net_vdpa" = "yes" ; then
2885   echo "CONFIG_VHOST_NET_VDPA=y" >> $config_host_mak
2886 fi
2887 if test "$vhost_crypto" = "yes" ; then
2888   echo "CONFIG_VHOST_CRYPTO=y" >> $config_host_mak
2889 fi
2890 if test "$vhost_vsock" = "yes" ; then
2891   echo "CONFIG_VHOST_VSOCK=y" >> $config_host_mak
2892   if test "$vhost_user" = "yes" ; then
2893     echo "CONFIG_VHOST_USER_VSOCK=y" >> $config_host_mak
2894   fi
2895 fi
2896 if test "$vhost_kernel" = "yes" ; then
2897   echo "CONFIG_VHOST_KERNEL=y" >> $config_host_mak
2898 fi
2899 if test "$vhost_user" = "yes" ; then
2900   echo "CONFIG_VHOST_USER=y" >> $config_host_mak
2901 fi
2902 if test "$vhost_vdpa" = "yes" ; then
2903   echo "CONFIG_VHOST_VDPA=y" >> $config_host_mak
2904 fi
2905 if test "$vhost_user_fs" = "yes" ; then
2906   echo "CONFIG_VHOST_USER_FS=y" >> $config_host_mak
2907 fi
2908 if test "$tcg" = "enabled" -a "$tcg_interpreter" = "true" ; then
2909   echo "CONFIG_TCG_INTERPRETER=y" >> $config_host_mak
2910 fi
2911
2912 if test "$opengl" = "yes" ; then
2913   echo "CONFIG_OPENGL=y" >> $config_host_mak
2914   echo "OPENGL_CFLAGS=$opengl_cflags" >> $config_host_mak
2915   echo "OPENGL_LIBS=$opengl_libs" >> $config_host_mak
2916 fi
2917
2918 # XXX: suppress that
2919 if [ "$bsd" = "yes" ] ; then
2920   echo "CONFIG_BSD=y" >> $config_host_mak
2921 fi
2922
2923 echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
2924
2925 if test "$have_asan_iface_fiber" = "yes" ; then
2926     echo "CONFIG_ASAN_IFACE_FIBER=y" >> $config_host_mak
2927 fi
2928
2929 if test "$have_tsan" = "yes" && test "$have_tsan_iface_fiber" = "yes" ; then
2930     echo "CONFIG_TSAN=y" >> $config_host_mak
2931 fi
2932
2933 if test "$int128" = "yes" ; then
2934   echo "CONFIG_INT128=y" >> $config_host_mak
2935 fi
2936
2937 if test "$atomic128" = "yes" ; then
2938   echo "CONFIG_ATOMIC128=y" >> $config_host_mak
2939 fi
2940
2941 if test "$cmpxchg128" = "yes" ; then
2942   echo "CONFIG_CMPXCHG128=y" >> $config_host_mak
2943 fi
2944
2945 if test "$rdma" = "yes" ; then
2946   echo "CONFIG_RDMA=y" >> $config_host_mak
2947   echo "RDMA_LIBS=$rdma_libs" >> $config_host_mak
2948 fi
2949
2950 if test "$pvrdma" = "yes" ; then
2951   echo "CONFIG_PVRDMA=y" >> $config_host_mak
2952 fi
2953
2954 if test "$plugins" = "yes" ; then
2955     echo "CONFIG_PLUGIN=y" >> $config_host_mak
2956 fi
2957
2958 if test -n "$gdb_bin"; then
2959     gdb_version=$($gdb_bin --version | head -n 1)
2960     if version_ge ${gdb_version##* } 9.1; then
2961         echo "HAVE_GDB_BIN=$gdb_bin" >> $config_host_mak
2962     fi
2963 fi
2964
2965 if test "$secret_keyring" = "yes" ; then
2966   echo "CONFIG_SECRET_KEYRING=y" >> $config_host_mak
2967 fi
2968
2969 echo "ROMS=$roms" >> $config_host_mak
2970 echo "MAKE=$make" >> $config_host_mak
2971 echo "PYTHON=$python" >> $config_host_mak
2972 echo "GENISOIMAGE=$genisoimage" >> $config_host_mak
2973 echo "MESON=$meson" >> $config_host_mak
2974 echo "NINJA=$ninja" >> $config_host_mak
2975 echo "CC=$cc" >> $config_host_mak
2976 echo "HOST_CC=$host_cc" >> $config_host_mak
2977 echo "AR=$ar" >> $config_host_mak
2978 echo "AS=$as" >> $config_host_mak
2979 echo "CCAS=$ccas" >> $config_host_mak
2980 echo "CPP=$cpp" >> $config_host_mak
2981 echo "OBJCOPY=$objcopy" >> $config_host_mak
2982 echo "LD=$ld" >> $config_host_mak
2983 echo "CFLAGS_NOPIE=$CFLAGS_NOPIE" >> $config_host_mak
2984 echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak
2985 echo "QEMU_CXXFLAGS=$QEMU_CXXFLAGS" >> $config_host_mak
2986 echo "GLIB_CFLAGS=$glib_cflags" >> $config_host_mak
2987 echo "GLIB_LIBS=$glib_libs" >> $config_host_mak
2988 echo "GLIB_VERSION=$(pkg-config --modversion glib-2.0)" >> $config_host_mak
2989 echo "QEMU_LDFLAGS=$QEMU_LDFLAGS" >> $config_host_mak
2990 echo "LD_I386_EMULATION=$ld_i386_emulation" >> $config_host_mak
2991 echo "STRIP=$strip" >> $config_host_mak
2992 echo "EXESUF=$EXESUF" >> $config_host_mak
2993
2994 # use included Linux headers
2995 if test "$linux" = "yes" ; then
2996   mkdir -p linux-headers
2997   case "$cpu" in
2998   i386|x86_64)
2999     linux_arch=x86
3000     ;;
3001   ppc|ppc64)
3002     linux_arch=powerpc
3003     ;;
3004   s390x)
3005     linux_arch=s390
3006     ;;
3007   aarch64)
3008     linux_arch=arm64
3009     ;;
3010   loongarch*)
3011     linux_arch=loongarch
3012     ;;
3013   mips64)
3014     linux_arch=mips
3015     ;;
3016   *)
3017     # For most CPUs the kernel architecture name and QEMU CPU name match.
3018     linux_arch="$cpu"
3019     ;;
3020   esac
3021     # For non-KVM architectures we will not have asm headers
3022     if [ -e "$source_path/linux-headers/asm-$linux_arch" ]; then
3023       symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
3024     fi
3025 fi
3026
3027 for target in $target_list; do
3028     target_dir="$target"
3029     target_name=$(echo $target | cut -d '-' -f 1)$EXESUF
3030     mkdir -p $target_dir
3031     case $target in
3032         *-user) symlink "../qemu-$target_name" "$target_dir/qemu-$target_name" ;;
3033         *) symlink "../qemu-system-$target_name" "$target_dir/qemu-system-$target_name" ;;
3034     esac
3035 done
3036
3037 echo "CONFIG_QEMU_INTERP_PREFIX=$interp_prefix" | sed 's/%M/@0@/' >> $config_host_mak
3038 if test "$default_targets" = "yes"; then
3039   echo "CONFIG_DEFAULT_TARGETS=y" >> $config_host_mak
3040 fi
3041
3042 if test "$ccache_cpp2" = "yes"; then
3043   echo "export CCACHE_CPP2=y" >> $config_host_mak
3044 fi
3045
3046 if test "$safe_stack" = "yes"; then
3047   echo "CONFIG_SAFESTACK=y" >> $config_host_mak
3048 fi
3049
3050 # If we're using a separate build tree, set it up now.
3051 # LINKS are things to symlink back into the source tree
3052 # (these can be both files and directories).
3053 # Caution: do not add files or directories here using wildcards. This
3054 # will result in problems later if a new file matching the wildcard is
3055 # added to the source tree -- nothing will cause configure to be rerun
3056 # so the build tree will be missing the link back to the new file, and
3057 # tests might fail. Prefer to keep the relevant files in their own
3058 # directory and symlink the directory instead.
3059 LINKS="Makefile"
3060 LINKS="$LINKS tests/tcg/Makefile.target"
3061 LINKS="$LINKS pc-bios/optionrom/Makefile"
3062 LINKS="$LINKS pc-bios/s390-ccw/Makefile"
3063 LINKS="$LINKS roms/seabios/Makefile"
3064 LINKS="$LINKS pc-bios/qemu-icon.bmp"
3065 LINKS="$LINKS .gdbinit scripts" # scripts needed by relative path in .gdbinit
3066 LINKS="$LINKS tests/avocado tests/data"
3067 LINKS="$LINKS tests/qemu-iotests/check"
3068 LINKS="$LINKS python"
3069 LINKS="$LINKS contrib/plugins/Makefile "
3070 for bios_file in \
3071     $source_path/pc-bios/*.bin \
3072     $source_path/pc-bios/*.elf \
3073     $source_path/pc-bios/*.lid \
3074     $source_path/pc-bios/*.rom \
3075     $source_path/pc-bios/*.dtb \
3076     $source_path/pc-bios/*.img \
3077     $source_path/pc-bios/openbios-* \
3078     $source_path/pc-bios/u-boot.* \
3079     $source_path/pc-bios/palcode-* \
3080     $source_path/pc-bios/qemu_vga.ndrv
3081
3082 do
3083     LINKS="$LINKS pc-bios/$(basename $bios_file)"
3084 done
3085 for f in $LINKS ; do
3086     if [ -e "$source_path/$f" ]; then
3087         mkdir -p `dirname ./$f`
3088         symlink "$source_path/$f" "$f"
3089     fi
3090 done
3091
3092 (for i in $cross_cc_vars; do
3093   export $i
3094 done
3095 export target_list source_path use_containers cpu
3096 $source_path/tests/tcg/configure.sh)
3097
3098 # temporary config to build submodules
3099 if test -f $source_path/roms/seabios/Makefile; then
3100   for rom in seabios; do
3101     config_mak=roms/$rom/config.mak
3102     echo "# Automatically generated by configure - do not modify" > $config_mak
3103     echo "SRC_PATH=$source_path/roms/$rom" >> $config_mak
3104     echo "AS=$as" >> $config_mak
3105     echo "CCAS=$ccas" >> $config_mak
3106     echo "CC=$cc" >> $config_mak
3107     echo "BCC=bcc" >> $config_mak
3108     echo "CPP=$cpp" >> $config_mak
3109     echo "OBJCOPY=objcopy" >> $config_mak
3110     echo "IASL=$iasl" >> $config_mak
3111     echo "LD=$ld" >> $config_mak
3112     echo "RANLIB=$ranlib" >> $config_mak
3113   done
3114 fi
3115
3116 config_mak=pc-bios/optionrom/config.mak
3117 echo "# Automatically generated by configure - do not modify" > $config_mak
3118 echo "TOPSRC_DIR=$source_path" >> $config_mak
3119
3120 if test "$skip_meson" = no; then
3121   cross="config-meson.cross.new"
3122   meson_quote() {
3123     test $# = 0 && return
3124     echo "'$(echo $* | sed "s/ /','/g")'"
3125   }
3126
3127   echo "# Automatically generated by configure - do not modify" > $cross
3128   echo "[properties]" >> $cross
3129
3130   # unroll any custom device configs
3131   for a in $device_archs; do
3132       eval "c=\$devices_${a}"
3133       echo "${a}-softmmu = '$c'" >> $cross
3134   done
3135
3136   test -z "$cxx" && echo "link_language = 'c'" >> $cross
3137   echo "[built-in options]" >> $cross
3138   echo "c_args = [$(meson_quote $CFLAGS $EXTRA_CFLAGS)]" >> $cross
3139   echo "cpp_args = [$(meson_quote $CXXFLAGS $EXTRA_CXXFLAGS)]" >> $cross
3140   echo "c_link_args = [$(meson_quote $CFLAGS $LDFLAGS $EXTRA_CFLAGS $EXTRA_LDFLAGS)]" >> $cross
3141   echo "cpp_link_args = [$(meson_quote $CXXFLAGS $LDFLAGS $EXTRA_CXXFLAGS $EXTRA_LDFLAGS)]" >> $cross
3142   echo "[binaries]" >> $cross
3143   echo "c = [$(meson_quote $cc $CPU_CFLAGS)]" >> $cross
3144   test -n "$cxx" && echo "cpp = [$(meson_quote $cxx $CPU_CFLAGS)]" >> $cross
3145   test -n "$objcc" && echo "objc = [$(meson_quote $objcc $CPU_CFLAGS)]" >> $cross
3146   echo "ar = [$(meson_quote $ar)]" >> $cross
3147   echo "nm = [$(meson_quote $nm)]" >> $cross
3148   echo "pkgconfig = [$(meson_quote $pkg_config_exe)]" >> $cross
3149   echo "ranlib = [$(meson_quote $ranlib)]" >> $cross
3150   if has $sdl2_config; then
3151     echo "sdl2-config = [$(meson_quote $sdl2_config)]" >> $cross
3152   fi
3153   echo "strip = [$(meson_quote $strip)]" >> $cross
3154   echo "windres = [$(meson_quote $windres)]" >> $cross
3155   if test "$cross_compile" = "yes"; then
3156     cross_arg="--cross-file config-meson.cross"
3157     echo "[host_machine]" >> $cross
3158     echo "system = '$targetos'" >> $cross
3159     case "$cpu" in
3160         i386)
3161             echo "cpu_family = 'x86'" >> $cross
3162             ;;
3163         *)
3164             echo "cpu_family = '$cpu'" >> $cross
3165             ;;
3166     esac
3167     echo "cpu = '$cpu'" >> $cross
3168     if test "$bigendian" = "yes" ; then
3169         echo "endian = 'big'" >> $cross
3170     else
3171         echo "endian = 'little'" >> $cross
3172     fi
3173   else
3174     cross_arg="--native-file config-meson.cross"
3175   fi
3176   mv $cross config-meson.cross
3177
3178   rm -rf meson-private meson-info meson-logs
3179   run_meson() {
3180     NINJA=$ninja $meson setup \
3181         --prefix "$prefix" \
3182         --libdir "$libdir" \
3183         --libexecdir "$libexecdir" \
3184         --bindir "$bindir" \
3185         --includedir "$includedir" \
3186         --datadir "$datadir" \
3187         --mandir "$mandir" \
3188         --sysconfdir "$sysconfdir" \
3189         --localedir "$localedir" \
3190         --localstatedir "$local_statedir" \
3191         -Daudio_drv_list=$audio_drv_list \
3192         -Ddefault_devices=$default_devices \
3193         -Ddocdir="$docdir" \
3194         -Diasl="$($iasl -h >/dev/null 2>&1 && printf %s "$iasl")" \
3195         -Dqemu_firmwarepath="$firmwarepath" \
3196         -Dqemu_suffix="$qemu_suffix" \
3197         -Dsmbd="$smbd" \
3198         -Dsphinx_build="$sphinx_build" \
3199         -Dtrace_file="$trace_file" \
3200         -Doptimization=$(if test "$debug" = yes; then echo 0; else echo 2; fi) \
3201         -Ddebug=$(if test "$debug_info" = yes; then echo true; else echo false; fi) \
3202         -Dwerror=$(if test "$werror" = yes; then echo true; else echo false; fi) \
3203         -Db_pie=$(if test "$pie" = yes; then echo true; else echo false; fi) \
3204         -Db_coverage=$(if test "$gcov" = yes; then echo true; else echo false; fi) \
3205         -Db_lto=$lto -Dcfi=$cfi -Dtcg=$tcg -Dxen=$xen \
3206         -Dcapstone=$capstone -Dfdt=$fdt -Dslirp=$slirp \
3207         $(test -n "${LIB_FUZZING_ENGINE+xxx}" && echo "-Dfuzzing_engine=$LIB_FUZZING_ENGINE") \
3208         $(if test "$default_feature" = no; then echo "-Dauto_features=disabled"; fi) \
3209         "$@" $cross_arg "$PWD" "$source_path"
3210   }
3211   eval run_meson $meson_options
3212   if test "$?" -ne 0 ; then
3213       error_exit "meson setup failed"
3214   fi
3215 else
3216   if test -f meson-private/cmd_line.txt; then
3217     # Adjust old command line options whose type was changed
3218     # Avoids having to use "setup --wipe" when Meson is upgraded
3219     perl -i -ne '
3220       s/^gettext = true$/gettext = auto/;
3221       s/^gettext = false$/gettext = disabled/;
3222       /^b_staticpic/ && next;
3223       print;' meson-private/cmd_line.txt
3224   fi
3225 fi
3226
3227 # Save the configure command line for later reuse.
3228 cat <<EOD >config.status
3229 #!/bin/sh
3230 # Generated by configure.
3231 # Run this file to recreate the current configuration.
3232 # Compiler output produced by configure, useful for debugging
3233 # configure, is in config.log if it exists.
3234 EOD
3235
3236 preserve_env() {
3237     envname=$1
3238
3239     eval envval=\$$envname
3240
3241     if test -n "$envval"
3242     then
3243         echo "$envname='$envval'" >> config.status
3244         echo "export $envname" >> config.status
3245     else
3246         echo "unset $envname" >> config.status
3247     fi
3248 }
3249
3250 # Preserve various env variables that influence what
3251 # features/build target configure will detect
3252 preserve_env AR
3253 preserve_env AS
3254 preserve_env CC
3255 preserve_env CPP
3256 preserve_env CFLAGS
3257 preserve_env CXX
3258 preserve_env CXXFLAGS
3259 preserve_env INSTALL
3260 preserve_env LD
3261 preserve_env LDFLAGS
3262 preserve_env LD_LIBRARY_PATH
3263 preserve_env LIBTOOL
3264 preserve_env MAKE
3265 preserve_env NM
3266 preserve_env OBJCOPY
3267 preserve_env PATH
3268 preserve_env PKG_CONFIG
3269 preserve_env PKG_CONFIG_LIBDIR
3270 preserve_env PKG_CONFIG_PATH
3271 preserve_env PYTHON
3272 preserve_env SDL2_CONFIG
3273 preserve_env SMBD
3274 preserve_env STRIP
3275 preserve_env WINDRES
3276
3277 printf "exec" >>config.status
3278 for i in "$0" "$@"; do
3279   test "$i" = --skip-meson || printf " %s" "$(quote_sh "$i")" >>config.status
3280 done
3281 echo ' "$@"' >>config.status
3282 chmod +x config.status
3283
3284 rm -r "$TMPDIR1"