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}/${TMPB}.cxx"
  80 TMPM="${TMPDIR1}/${TMPB}.m"
  81 TMPE="${TMPDIR1}/${TMPB}.exe"
  82
  83 rm -f config.log
  84
  85 # Print a helpful header at the top of config.log
  86 echo "# QEMU configure log $(date)" >> config.log
  87 printf "# Configured with:" >> config.log
  88 printf " '%s'" "$0" "$@" >> config.log
  89 echo >> config.log
  90 echo "#" >> config.log
  91
  92 quote_sh() {
  93     printf "%s" "$1" | sed "s,','\\\\'',g; s,.*,'&',"
  94 }
  95
  96 print_error() {
  97     (echo
  98     echo "ERROR: $1"
  99     while test -n "$2"; do
 100         echo "       $2"
 101         shift
 102     done
 103     echo) >&2
 104 }
 105
 106 error_exit() {
 107     print_error "$@"
 108     exit 1
 109 }
 110
 111 do_compiler() {
 112     # Run the compiler, capturing its output to the log. First argument
 113     # is compiler binary to execute.
 114     compiler="$1"
 115     shift
 116     if test -n "$BASH_VERSION"; then eval '
 117         echo >>config.log "
 118 funcs: ${FUNCNAME[*]}
 119 lines: ${BASH_LINENO[*]}"
 120     '; fi
 121     echo $compiler "$@" >> config.log
 122     $compiler "$@" >> config.log 2>&1 || return $?
 123     # Test passed. If this is an --enable-werror build, rerun
 124     # the test with -Werror and bail out if it fails. This
 125     # makes warning-generating-errors in configure test code
 126     # obvious to developers.
 127     if test "$werror" != "yes"; then
 128         return 0
 129     fi
 130     # Don't bother rerunning the compile if we were already using -Werror
 131     case "$*" in
 132         *-Werror*)
 133            return 0
 134         ;;
 135     esac
 136     echo $compiler -Werror "$@" >> config.log
 137     $compiler -Werror "$@" >> config.log 2>&1 && return $?
 138     error_exit "configure test passed without -Werror but failed with -Werror." \
 139         "This is probably a bug in the configure script. The failing command" \
 140         "will be at the bottom of config.log." \
 141         "You can run configure with --disable-werror to bypass this check."
 142 }
 143
 144 do_cc() {
 145     do_compiler "$cc" $CPU_CFLAGS "$@"
 146 }
 147
 148 do_cxx() {
 149     do_compiler "$cxx" $CPU_CFLAGS "$@"
 150 }
 151
 152 do_objc() {
 153     do_compiler "$objcc" $CPU_CFLAGS "$@"
 154 }
 155
 156 # Append $2 to the variable named $1, with space separation
 157 add_to() {
 158     eval $1=\${$1:+\"\$$1 \"}\$2
 159 }
 160
 161 update_cxxflags() {
 162     # Set QEMU_CXXFLAGS from QEMU_CFLAGS by filtering out those
 163     # options which some versions of GCC's C++ compiler complain about
 164     # because they only make sense for C programs.
 165     QEMU_CXXFLAGS="-D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS"
 166     CONFIGURE_CXXFLAGS=$(echo "$CONFIGURE_CFLAGS" | sed s/-std=gnu11/-std=gnu++11/)
 167     for arg in $QEMU_CFLAGS; do
 168         case $arg in
 169             -Wstrict-prototypes|-Wmissing-prototypes|-Wnested-externs|\
 170             -Wold-style-declaration|-Wold-style-definition|-Wredundant-decls)
 171                 ;;
 172             *)
 173                 QEMU_CXXFLAGS=${QEMU_CXXFLAGS:+$QEMU_CXXFLAGS }$arg
 174                 ;;
 175         esac
 176     done
 177 }
 178
 179 compile_object() {
 180   local_cflags="$1"
 181   do_cc $CFLAGS $EXTRA_CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -c -o $TMPO $TMPC
 182 }
 183
 184 compile_prog() {
 185   local_cflags="$1"
 186   local_ldflags="$2"
 187   do_cc $CFLAGS $EXTRA_CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC \
 188       $LDFLAGS $EXTRA_LDFLAGS $CONFIGURE_LDFLAGS $QEMU_LDFLAGS $local_ldflags
 189 }
 190
 191 # symbolically link $1 to $2.  Portable version of "ln -sf".
 192 symlink() {
 193   rm -rf "$2"
 194   mkdir -p "$(dirname "$2")"
 195   ln -s "$1" "$2"
 196 }
 197
 198 # check whether a command is available to this shell (may be either an
 199 # executable or a builtin)
 200 has() {
 201     type "$1" >/dev/null 2>&1
 202 }
 203
 204 version_ge () {
 205     local_ver1=$(expr "$1" : '\([0-9.]*\)' | tr . ' ')
 206     local_ver2=$(echo "$2" | tr . ' ')
 207     while true; do
 208         set x $local_ver1
 209         local_first=${2-0}
 210         # 'shift 2' if $2 is set, or 'shift' if $2 is not set
 211         shift ${2:+2}
 212         local_ver1=$*
 213         set x $local_ver2
 214         # the second argument finished, the first must be greater or equal
 215         test $# = 1 && return 0
 216         test $local_first -lt $2 && return 1
 217         test $local_first -gt $2 && return 0
 218         shift ${2:+2}
 219         local_ver2=$*
 220     done
 221 }
 222
 223 glob() {
 224     eval test -z '"${1#'"$2"'}"'
 225 }
 226
 227 ld_has() {
 228     $ld --help 2>/dev/null | grep ".$1" >/dev/null 2>&1
 229 }
 230
 231 if printf %s\\n "$source_path" "$PWD" | grep -q "[[:space:]:]";
 232 then
 233   error_exit "main directory cannot contain spaces nor colons"
 234 fi
 235
 236 # default parameters
 237 cpu=""
 238 iasl="iasl"
 239 interp_prefix="/usr/gnemul/qemu-%M"
 240 static="no"
 241 cross_compile="no"
 242 cross_prefix=""
 243 audio_drv_list="default"
 244 block_drv_rw_whitelist=""
 245 block_drv_ro_whitelist=""
 246 host_cc="cc"
 247 lto="false"
 248 stack_protector=""
 249 safe_stack=""
 250 use_containers="yes"
 251 gdb_bin=$(command -v "gdb-multiarch" || command -v "gdb")
 252
 253 if test -e "$source_path/.git"
 254 then
 255     git_submodules_action="update"
 256 else
 257     git_submodules_action="ignore"
 258 fi
 259
 260 git_submodules="ui/keycodemapdb"
 261 git="git"
 262
 263 # Don't accept a target_list environment variable.
 264 unset target_list
 265 unset target_list_exclude
 266
 267 # Default value for a variable defining feature "foo".
 268 #  * foo="no"  feature will only be used if --enable-foo arg is given
 269 #  * foo=""    feature will be searched for, and if found, will be used
 270 #              unless --disable-foo is given
 271 #  * foo="yes" this value will only be set by --enable-foo flag.
 272 #              feature will searched for,
 273 #              if not found, configure exits with error
 274 #
 275 # Always add --enable-foo and --disable-foo command line args.
 276 # Distributions want to ensure that several features are compiled in, and it
 277 # is impossible without a --enable-foo that exits if a feature is not found.
 278
 279 default_feature=""
 280 # parse CC options second
 281 for opt do
 282   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 283   case "$opt" in
 284       --without-default-features)
 285           default_feature="no"
 286   ;;
 287   esac
 288 done
 289
 290 EXTRA_CFLAGS=""
 291 EXTRA_CXXFLAGS=""
 292 EXTRA_OBJCFLAGS=""
 293 EXTRA_LDFLAGS=""
 294
 295 xen_ctrl_version="$default_feature"
 296 vhost_kernel="$default_feature"
 297 vhost_net="$default_feature"
 298 vhost_crypto="$default_feature"
 299 vhost_scsi="$default_feature"
 300 vhost_vsock="$default_feature"
 301 vhost_user="no"
 302 vhost_user_fs="$default_feature"
 303 vhost_vdpa="$default_feature"
 304 debug_info="yes"
 305 debug_tcg="no"
 306 debug="no"
 307 sanitizers="no"
 308 tsan="no"
 309 fortify_source="yes"
 310 gcov="no"
 311 EXESUF=""
 312 modules="no"
 313 module_upgrades="no"
 314 prefix="/usr/local"
 315 qemu_suffix="qemu"
 316 softmmu="yes"
 317 linux_user=""
 318 bsd_user=""
 319 pkgversion=""
 320 pie=""
 321 trace_file="trace"
 322 coroutine=""
 323 tls_priority="NORMAL"
 324 plugins="$default_feature"
 325 meson=""
 326 meson_args=""
 327 ninja=""
 328 gio="$default_feature"
 329 skip_meson=no
 330
 331 # The following Meson options are handled manually (still they
 332 # are included in the automatically generated help message)
 333
 334 # 1. Track which submodules are needed
 335 if test "$default_feature" = no ; then
 336   capstone="disabled"
 337   slirp="disabled"
 338 else
 339   capstone="auto"
 340   slirp="auto"
 341 fi
 342 fdt="auto"
 343
 344 # 2. Support --with/--without option
 345 default_devices="true"
 346
 347 # 3. Automatically enable/disable other options
 348 tcg="enabled"
 349 cfi="false"
 350
 351 # 4. Detection partly done in configure
 352 xen=${default_feature:+disabled}
 353
 354 # parse CC options second
 355 for opt do
 356   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 357   case "$opt" in
 358   --cross-prefix=*) cross_prefix="$optarg"
 359                     cross_compile="yes"
 360   ;;
 361   --cc=*) CC="$optarg"
 362   ;;
 363   --cxx=*) CXX="$optarg"
 364   ;;
 365   --cpu=*) cpu="$optarg"
 366   ;;
 367   --extra-cflags=*)
 368     EXTRA_CFLAGS="$EXTRA_CFLAGS $optarg"
 369     EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
 370     EXTRA_OBJCFLAGS="$EXTRA_OBJCFLAGS $optarg"
 371     ;;
 372   --extra-cxxflags=*) EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
 373   ;;
 374   --extra-objcflags=*) EXTRA_OBJCFLAGS="$EXTRA_OBJCFLAGS $optarg"
 375   ;;
 376   --extra-ldflags=*) EXTRA_LDFLAGS="$EXTRA_LDFLAGS $optarg"
 377   ;;
 378   --cross-cc-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-cc-FOO option"
 379   ;;
 380   --cross-cc-cflags-*) cc_arch=${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                 eval "cross_cc_${cc_arch}=\$optarg"
 386                 cross_cc_vars="$cross_cc_vars cross_cc_${cc_arch}"
 387   ;;
 388   esac
 389 done
 390 # OS specific
 391 # Using uname is really, really broken.  Once we have the right set of checks
 392 # we can eliminate its usage altogether.
 393
 394 # Preferred compiler:
 395 #  ${CC} (if set)
 396 #  ${cross_prefix}gcc (if cross-prefix specified)
 397 #  system compiler
 398 if test -z "${CC}${cross_prefix}"; then
 399   cc="$host_cc"
 400 else
 401   cc="${CC-${cross_prefix}gcc}"
 402 fi
 403
 404 if test -z "${CXX}${cross_prefix}"; then
 405   cxx="c++"
 406 else
 407   cxx="${CXX-${cross_prefix}g++}"
 408 fi
 409
 410 ar="${AR-${cross_prefix}ar}"
 411 as="${AS-${cross_prefix}as}"
 412 ccas="${CCAS-$cc}"
 413 cpp="${CPP-$cc -E}"
 414 objcopy="${OBJCOPY-${cross_prefix}objcopy}"
 415 ld="${LD-${cross_prefix}ld}"
 416 ranlib="${RANLIB-${cross_prefix}ranlib}"
 417 nm="${NM-${cross_prefix}nm}"
 418 smbd="$SMBD"
 419 strip="${STRIP-${cross_prefix}strip}"
 420 windres="${WINDRES-${cross_prefix}windres}"
 421 pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
 422 query_pkg_config() {
 423     "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
 424 }
 425 pkg_config=query_pkg_config
 426 sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"
 427
 428 # default flags for all hosts
 429 # We use -fwrapv to tell the compiler that we require a C dialect where
 430 # left shift of signed integers is well defined and has the expected
 431 # 2s-complement style results. (Both clang and gcc agree that it
 432 # provides these semantics.)
 433 QEMU_CFLAGS="-fno-strict-aliasing -fno-common -fwrapv"
 434 QEMU_CFLAGS="-Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
 435 QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
 436 QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
 437
 438 QEMU_LDFLAGS=
 439
 440 # Flags that are needed during configure but later taken care of by Meson
 441 CONFIGURE_CFLAGS="-std=gnu11 -Wall"
 442 CONFIGURE_LDFLAGS=
 443
 444
 445 check_define() {
 446 cat > $TMPC <<EOF
 447 #if !defined($1)
 448 #error $1 not defined
 449 #endif
 450 int main(void) { return 0; }
 451 EOF
 452   compile_object
 453 }
 454
 455 check_include() {
 456 cat > $TMPC <<EOF
 457 #include <$1>
 458 int main(void) { return 0; }
 459 EOF
 460   compile_object
 461 }
 462
 463 write_c_skeleton() {
 464     cat > $TMPC <<EOF
 465 int main(void) { return 0; }
 466 EOF
 467 }
 468
 469 if check_define __linux__ ; then
 470   targetos=linux
 471 elif check_define _WIN32 ; then
 472   targetos=windows
 473 elif check_define __OpenBSD__ ; then
 474   targetos=openbsd
 475 elif check_define __sun__ ; then
 476   targetos=sunos
 477 elif check_define __HAIKU__ ; then
 478   targetos=haiku
 479 elif check_define __FreeBSD__ ; then
 480   targetos=freebsd
 481 elif check_define __FreeBSD_kernel__ && check_define __GLIBC__; then
 482   targetos=gnu/kfreebsd
 483 elif check_define __DragonFly__ ; then
 484   targetos=dragonfly
 485 elif check_define __NetBSD__; then
 486   targetos=netbsd
 487 elif check_define __APPLE__; then
 488   targetos=darwin
 489 else
 490   # This is a fatal error, but don't report it yet, because we
 491   # might be going to just print the --help text, or it might
 492   # be the result of a missing compiler.
 493   targetos=bogus
 494 fi
 495
 496 # OS specific
 497
 498 mingw32="no"
 499 bsd="no"
 500 linux="no"
 501 solaris="no"
 502 case $targetos in
 503 windows)
 504   mingw32="yes"
 505   plugins="no"
 506   pie="no"
 507 ;;
 508 gnu/kfreebsd)
 509   bsd="yes"
 510 ;;
 511 freebsd)
 512   bsd="yes"
 513   make="${MAKE-gmake}"
 514   # needed for kinfo_getvmmap(3) in libutil.h
 515 ;;
 516 dragonfly)
 517   bsd="yes"
 518   make="${MAKE-gmake}"
 519 ;;
 520 netbsd)
 521   bsd="yes"
 522   make="${MAKE-gmake}"
 523 ;;
 524 openbsd)
 525   bsd="yes"
 526   make="${MAKE-gmake}"
 527 ;;
 528 darwin)
 529   bsd="yes"
 530   darwin="yes"
 531   # Disable attempts to use ObjectiveC features in os/object.h since they
 532   # won't work when we're compiling with gcc as a C compiler.
 533   QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
 534 ;;
 535 sunos)
 536   solaris="yes"
 537   make="${MAKE-gmake}"
 538 # needed for CMSG_ macros in sys/socket.h
 539   QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
 540 # needed for TIOCWIN* defines in termios.h
 541   QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
 542   # $(uname -m) returns i86pc even on an x86_64 box, so default based on isainfo
 543   # Note that this check is broken for cross-compilation: if you're
 544   # cross-compiling to one of these OSes then you'll need to specify
 545   # the correct CPU with the --cpu option.
 546   if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then
 547     cpu="x86_64"
 548   fi
 549 ;;
 550 haiku)
 551   pie="no"
 552   QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -D_BSD_SOURCE -fPIC $QEMU_CFLAGS"
 553 ;;
 554 linux)
 555   linux="yes"
 556   vhost_user=${default_feature:-yes}
 557 ;;
 558 esac
 559
 560 if test ! -z "$cpu" ; then
 561   # command line argument
 562   :
 563 elif check_define __i386__ ; then
 564   cpu="i386"
 565 elif check_define __x86_64__ ; then
 566   if check_define __ILP32__ ; then
 567     cpu="x32"
 568   else
 569     cpu="x86_64"
 570   fi
 571 elif check_define __sparc__ ; then
 572   if check_define __arch64__ ; then
 573     cpu="sparc64"
 574   else
 575     cpu="sparc"
 576   fi
 577 elif check_define _ARCH_PPC ; then
 578   if check_define _ARCH_PPC64 ; then
 579     if check_define _LITTLE_ENDIAN ; then
 580       cpu="ppc64le"
 581     else
 582       cpu="ppc64"
 583     fi
 584   else
 585     cpu="ppc"
 586   fi
 587 elif check_define __mips__ ; then
 588   cpu="mips"
 589 elif check_define __s390__ ; then
 590   if check_define __s390x__ ; then
 591     cpu="s390x"
 592   else
 593     cpu="s390"
 594   fi
 595 elif check_define __riscv ; then
 596   cpu="riscv"
 597 elif check_define __arm__ ; then
 598   cpu="arm"
 599 elif check_define __aarch64__ ; then
 600   cpu="aarch64"
 601 elif check_define __loongarch64 ; then
 602   cpu="loongarch64"
 603 else
 604   cpu=$(uname -m)
 605 fi
 606
 607 # Normalise host CPU name, set multilib cflags
 608 # Note that this case should only have supported host CPUs, not guests.
 609 case "$cpu" in
 610   armv*b|armv*l|arm)
 611     cpu="arm" ;;
 612
 613   i386|i486|i586|i686|i86pc|BePC)
 614     cpu="i386"
 615     CPU_CFLAGS="-m32" ;;
 616   x32)
 617     cpu="x86_64"
 618     CPU_CFLAGS="-mx32" ;;
 619   x86_64|amd64)
 620     cpu="x86_64"
 621     # ??? Only extremely old AMD cpus do not have cmpxchg16b.
 622     # If we truly care, we should simply detect this case at
 623     # runtime and generate the fallback to serial emulation.
 624     CPU_CFLAGS="-m64 -mcx16" ;;
 625
 626   mips*)
 627     cpu="mips" ;;
 628
 629   ppc)
 630     CPU_CFLAGS="-m32" ;;
 631   ppc64)
 632     CPU_CFLAGS="-m64 -mbig-endian" ;;
 633   ppc64le)
 634     cpu="ppc64"
 635     CPU_CFLAGS="-m64 -mlittle-endian" ;;
 636
 637   s390)
 638     CPU_CFLAGS="-m31" ;;
 639   s390x)
 640     CPU_CFLAGS="-m64" ;;
 641
 642   sparc|sun4[cdmuv])
 643     cpu="sparc"
 644     CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc" ;;
 645   sparc64)
 646     CPU_CFLAGS="-m64 -mcpu=ultrasparc" ;;
 647 esac
 648
 649 : ${make=${MAKE-make}}
 650
 651 # We prefer python 3.x. A bare 'python' is traditionally
 652 # python 2.x, but some distros have it as python 3.x, so
 653 # we check that too
 654 python=
 655 explicit_python=no
 656 for binary in "${PYTHON-python3}" python
 657 do
 658     if has "$binary"
 659     then
 660         python=$(command -v "$binary")
 661         break
 662     fi
 663 done
 664
 665
 666 # Check for ancillary tools used in testing
 667 genisoimage=
 668 for binary in genisoimage mkisofs
 669 do
 670     if has $binary
 671     then
 672         genisoimage=$(command -v "$binary")
 673         break
 674     fi
 675 done
 676
 677 # Default objcc to clang if available, otherwise use CC
 678 if has clang; then
 679   objcc=clang
 680 else
 681   objcc="$cc"
 682 fi
 683
 684 if test "$mingw32" = "yes" ; then
 685   EXESUF=".exe"
 686   # MinGW needs -mthreads for TLS and macro _MT.
 687   CONFIGURE_CFLAGS="-mthreads $CONFIGURE_CFLAGS"
 688   write_c_skeleton;
 689   prefix="/qemu"
 690   qemu_suffix=""
 691 fi
 692
 693 werror=""
 694
 695 . $source_path/scripts/meson-buildoptions.sh
 696
 697 meson_options=
 698 meson_option_parse() {
 699   meson_options="$meson_options $(_meson_option_parse "$@")"
 700   if test $? -eq 1; then
 701     echo "ERROR: unknown option $1"
 702     echo "Try '$0 --help' for more information"
 703     exit 1
 704   fi
 705 }
 706
 707 for opt do
 708   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 709   case "$opt" in
 710   --help|-h) show_help=yes
 711   ;;
 712   --version|-V) exec cat $source_path/VERSION
 713   ;;
 714   --prefix=*) prefix="$optarg"
 715   ;;
 716   --interp-prefix=*) interp_prefix="$optarg"
 717   ;;
 718   --cross-prefix=*)
 719   ;;
 720   --cc=*)
 721   ;;
 722   --host-cc=*) host_cc="$optarg"
 723   ;;
 724   --cxx=*)
 725   ;;
 726   --iasl=*) iasl="$optarg"
 727   ;;
 728   --objcc=*) objcc="$optarg"
 729   ;;
 730   --make=*) make="$optarg"
 731   ;;
 732   --install=*)
 733   ;;
 734   --python=*) python="$optarg" ; explicit_python=yes
 735   ;;
 736   --sphinx-build=*) sphinx_build="$optarg"
 737   ;;
 738   --skip-meson) skip_meson=yes
 739   ;;
 740   --meson=*) meson="$optarg"
 741   ;;
 742   --ninja=*) ninja="$optarg"
 743   ;;
 744   --smbd=*) smbd="$optarg"
 745   ;;
 746   --extra-cflags=*)
 747   ;;
 748   --extra-cxxflags=*)
 749   ;;
 750   --extra-objcflags=*)
 751   ;;
 752   --extra-ldflags=*)
 753   ;;
 754   --cross-cc-*)
 755   ;;
 756   --enable-debug-info) debug_info="yes"
 757   ;;
 758   --disable-debug-info) debug_info="no"
 759   ;;
 760   --enable-modules)
 761       modules="yes"
 762   ;;
 763   --disable-modules)
 764       modules="no"
 765   ;;
 766   --disable-module-upgrades) module_upgrades="no"
 767   ;;
 768   --enable-module-upgrades) module_upgrades="yes"
 769   ;;
 770   --cpu=*)
 771   ;;
 772   --target-list=*) target_list="$optarg"
 773                    if test "$target_list_exclude"; then
 774                        error_exit "Can't mix --target-list with --target-list-exclude"
 775                    fi
 776   ;;
 777   --target-list-exclude=*) target_list_exclude="$optarg"
 778                    if test "$target_list"; then
 779                        error_exit "Can't mix --target-list-exclude with --target-list"
 780                    fi
 781   ;;
 782   --with-trace-file=*) trace_file="$optarg"
 783   ;;
 784   --with-default-devices) default_devices="true"
 785   ;;
 786   --without-default-devices) default_devices="false"
 787   ;;
 788   --with-devices-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --with-devices-FOO option"
 789   ;;
 790   --with-devices-*) device_arch=${opt#--with-devices-};
 791                     device_arch=${device_arch%%=*}
 792                     cf=$source_path/configs/devices/$device_arch-softmmu/$optarg.mak
 793                     if test -f "$cf"; then
 794                         device_archs="$device_archs $device_arch"
 795                         eval "devices_${device_arch}=\$optarg"
 796                     else
 797                         error_exit "File $cf does not exist"
 798                     fi
 799   ;;
 800   --without-default-features) # processed above
 801   ;;
 802   --enable-gcov) gcov="yes"
 803   ;;
 804   --static)
 805     static="yes"
 806     QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
 807   ;;
 808   --mandir=*) mandir="$optarg"
 809   ;;
 810   --bindir=*) bindir="$optarg"
 811   ;;
 812   --libdir=*) libdir="$optarg"
 813   ;;
 814   --libexecdir=*) libexecdir="$optarg"
 815   ;;
 816   --includedir=*) includedir="$optarg"
 817   ;;
 818   --datadir=*) datadir="$optarg"
 819   ;;
 820   --with-suffix=*) qemu_suffix="$optarg"
 821   ;;
 822   --docdir=*) docdir="$optarg"
 823   ;;
 824   --localedir=*) localedir="$optarg"
 825   ;;
 826   --sysconfdir=*) sysconfdir="$optarg"
 827   ;;
 828   --localstatedir=*) local_statedir="$optarg"
 829   ;;
 830   --firmwarepath=*) firmwarepath="$optarg"
 831   ;;
 832   --host=*|--build=*|\
 833   --disable-dependency-tracking|\
 834   --sbindir=*|--sharedstatedir=*|\
 835   --oldincludedir=*|--datarootdir=*|--infodir=*|\
 836   --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
 837     # These switches are silently ignored, for compatibility with
 838     # autoconf-generated configure scripts. This allows QEMU's
 839     # configure to be used by RPM and similar macros that set
 840     # lots of directory switches by default.
 841   ;;
 842   --audio-drv-list=*) audio_drv_list="$optarg"
 843   ;;
 844   --block-drv-rw-whitelist=*|--block-drv-whitelist=*) block_drv_rw_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
 845   ;;
 846   --block-drv-ro-whitelist=*) block_drv_ro_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
 847   ;;
 848   --enable-debug-tcg) debug_tcg="yes"
 849   ;;
 850   --disable-debug-tcg) debug_tcg="no"
 851   ;;
 852   --enable-debug)
 853       # Enable debugging options that aren't excessively noisy
 854       debug_tcg="yes"
 855       meson_option_parse --enable-debug-mutex ""
 856       debug="yes"
 857       fortify_source="no"
 858   ;;
 859   --enable-sanitizers) sanitizers="yes"
 860   ;;
 861   --disable-sanitizers) sanitizers="no"
 862   ;;
 863   --enable-tsan) tsan="yes"
 864   ;;
 865   --disable-tsan) tsan="no"
 866   ;;
 867   --disable-slirp) slirp="disabled"
 868   ;;
 869   --enable-slirp) slirp="enabled"
 870   ;;
 871   --enable-slirp=git) slirp="internal"
 872   ;;
 873   --enable-slirp=*) slirp="$optarg"
 874   ;;
 875   --disable-xen) xen="disabled"
 876   ;;
 877   --enable-xen) xen="enabled"
 878   ;;
 879   --disable-tcg) tcg="disabled"
 880                  plugins="no"
 881   ;;
 882   --enable-tcg) tcg="enabled"
 883   ;;
 884   --disable-system) softmmu="no"
 885   ;;
 886   --enable-system) softmmu="yes"
 887   ;;
 888   --disable-user)
 889       linux_user="no" ;
 890       bsd_user="no" ;
 891   ;;
 892   --enable-user) ;;
 893   --disable-linux-user) linux_user="no"
 894   ;;
 895   --enable-linux-user) linux_user="yes"
 896   ;;
 897   --disable-bsd-user) bsd_user="no"
 898   ;;
 899   --enable-bsd-user) bsd_user="yes"
 900   ;;
 901   --enable-pie) pie="yes"
 902   ;;
 903   --disable-pie) pie="no"
 904   ;;
 905   --enable-werror) werror="yes"
 906   ;;
 907   --disable-werror) werror="no"
 908   ;;
 909   --enable-lto) lto="true"
 910   ;;
 911   --disable-lto) lto="false"
 912   ;;
 913   --enable-stack-protector) stack_protector="yes"
 914   ;;
 915   --disable-stack-protector) stack_protector="no"
 916   ;;
 917   --enable-safe-stack) safe_stack="yes"
 918   ;;
 919   --disable-safe-stack) safe_stack="no"
 920   ;;
 921   --enable-cfi)
 922       cfi="true";
 923       lto="true";
 924   ;;
 925   --disable-cfi) cfi="false"
 926   ;;
 927   --disable-fdt) fdt="disabled"
 928   ;;
 929   --enable-fdt) fdt="enabled"
 930   ;;
 931   --enable-fdt=git) fdt="internal"
 932   ;;
 933   --enable-fdt=*) fdt="$optarg"
 934   ;;
 935   --with-pkgversion=*) pkgversion="$optarg"
 936   ;;
 937   --with-coroutine=*) coroutine="$optarg"
 938   ;;
 939   --disable-vhost-net) vhost_net="no"
 940   ;;
 941   --enable-vhost-net) vhost_net="yes"
 942   ;;
 943   --disable-vhost-crypto) vhost_crypto="no"
 944   ;;
 945   --enable-vhost-crypto) vhost_crypto="yes"
 946   ;;
 947   --disable-vhost-scsi) vhost_scsi="no"
 948   ;;
 949   --enable-vhost-scsi) vhost_scsi="yes"
 950   ;;
 951   --disable-vhost-vsock) vhost_vsock="no"
 952   ;;
 953   --enable-vhost-vsock) vhost_vsock="yes"
 954   ;;
 955   --disable-vhost-user-fs) vhost_user_fs="no"
 956   ;;
 957   --enable-vhost-user-fs) vhost_user_fs="yes"
 958   ;;
 959   --disable-zlib-test)
 960   ;;
 961   --disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
 962       echo "$0: $opt is obsolete, virtio-blk data-plane is always on" >&2
 963   ;;
 964   --enable-vhdx|--disable-vhdx)
 965       echo "$0: $opt is obsolete, VHDX driver is always built" >&2
 966   ;;
 967   --enable-uuid|--disable-uuid)
 968       echo "$0: $opt is obsolete, UUID support is always built" >&2
 969   ;;
 970   --tls-priority=*) tls_priority="$optarg"
 971   ;;
 972   --disable-vhost-user) vhost_user="no"
 973   ;;
 974   --enable-vhost-user) vhost_user="yes"
 975   ;;
 976   --disable-vhost-vdpa) vhost_vdpa="no"
 977   ;;
 978   --enable-vhost-vdpa) vhost_vdpa="yes"
 979   ;;
 980   --disable-vhost-kernel) vhost_kernel="no"
 981   ;;
 982   --enable-vhost-kernel) vhost_kernel="yes"
 983   ;;
 984   --disable-capstone) capstone="disabled"
 985   ;;
 986   --enable-capstone) capstone="enabled"
 987   ;;
 988   --enable-capstone=git) capstone="internal"
 989   ;;
 990   --enable-capstone=*) capstone="$optarg"
 991   ;;
 992   --with-git=*) git="$optarg"
 993   ;;
 994   --with-git-submodules=*)
 995       git_submodules_action="$optarg"
 996   ;;
 997   --enable-plugins) if test "$mingw32" = "yes"; then
 998                         error_exit "TCG plugins not currently supported on Windows platforms"
 999                     else
1000                         plugins="yes"
1001                     fi
1002   ;;
1003   --disable-plugins) plugins="no"
1004   ;;
1005   --enable-containers) use_containers="yes"
1006   ;;
1007   --disable-containers) use_containers="no"
1008   ;;
1009   --gdb=*) gdb_bin="$optarg"
1010   ;;
1011   --enable-gio) gio=yes
1012   ;;
1013   --disable-gio) gio=no
1014   ;;
1015   # backwards compatibility options
1016   --enable-trace-backend=*) meson_option_parse "--enable-trace-backends=$optarg" "$optarg"
1017   ;;
1018   --disable-blobs) meson_option_parse --disable-install-blobs ""
1019   ;;
1020   --enable-tcmalloc) meson_option_parse --enable-malloc=tcmalloc tcmalloc
1021   ;;
1022   --enable-jemalloc) meson_option_parse --enable-malloc=jemalloc jemalloc
1023   ;;
1024   # everything else has the same name in configure and meson
1025   --enable-* | --disable-*) meson_option_parse "$opt" "$optarg"
1026   ;;
1027   *)
1028       echo "ERROR: unknown option $opt"
1029       echo "Try '$0 --help' for more information"
1030       exit 1
1031   ;;
1032   esac
1033 done
1034
1035 # test for any invalid configuration combinations
1036 if test "$plugins" = "yes" -a "$tcg" = "disabled"; then
1037     error_exit "Can't enable plugins on non-TCG builds"
1038 fi
1039
1040 case $git_submodules_action in
1041     update|validate)
1042         if test ! -e "$source_path/.git"; then
1043             echo "ERROR: cannot $git_submodules_action git submodules without .git"
1044             exit 1
1045         fi
1046     ;;
1047     ignore)
1048         if ! test -f "$source_path/ui/keycodemapdb/README"
1049         then
1050             echo
1051             echo "ERROR: missing GIT submodules"
1052             echo
1053             if test -e "$source_path/.git"; then
1054                 echo "--with-git-submodules=ignore specified but submodules were not"
1055                 echo "checked out.  Please initialize and update submodules."
1056             else
1057                 echo "This is not a GIT checkout but module content appears to"
1058                 echo "be missing. Do not use 'git archive' or GitHub download links"
1059                 echo "to acquire QEMU source archives. Non-GIT builds are only"
1060                 echo "supported with source archives linked from:"
1061                 echo
1062                 echo "  https://www.qemu.org/download/#source"
1063                 echo
1064                 echo "Developers working with GIT can use scripts/archive-source.sh"
1065                 echo "if they need to create valid source archives."
1066             fi
1067             echo
1068             exit 1
1069         fi
1070     ;;
1071     *)
1072         echo "ERROR: invalid --with-git-submodules= value '$git_submodules_action'"
1073         exit 1
1074     ;;
1075 esac
1076
1077 libdir="${libdir:-$prefix/lib}"
1078 libexecdir="${libexecdir:-$prefix/libexec}"
1079 includedir="${includedir:-$prefix/include}"
1080
1081 if test "$mingw32" = "yes" ; then
1082     bindir="${bindir:-$prefix}"
1083 else
1084     bindir="${bindir:-$prefix/bin}"
1085 fi
1086 mandir="${mandir:-$prefix/share/man}"
1087 datadir="${datadir:-$prefix/share}"
1088 docdir="${docdir:-$prefix/share/doc}"
1089 sysconfdir="${sysconfdir:-$prefix/etc}"
1090 local_statedir="${local_statedir:-$prefix/var}"
1091 firmwarepath="${firmwarepath:-$datadir/qemu-firmware}"
1092 localedir="${localedir:-$datadir/locale}"
1093
1094 if eval test -z "\${cross_cc_$cpu}"; then
1095     eval "cross_cc_${cpu}=\$cc"
1096     cross_cc_vars="$cross_cc_vars cross_cc_${cpu}"
1097 fi
1098
1099 default_target_list=""
1100 mak_wilds=""
1101
1102 if [ "$linux_user" != no ]; then
1103     if [ "$targetos" = linux ] && [ -d $source_path/linux-user/include/host/$cpu ]; then
1104         linux_user=yes
1105     elif [ "$linux_user" = yes ]; then
1106         error_exit "linux-user not supported on this architecture"
1107     fi
1108 fi
1109 if [ "$bsd_user" != no ]; then
1110     if [ "$bsd_user" = "" ]; then
1111         test $targetos = freebsd && bsd_user=yes
1112     fi
1113     if [ "$bsd_user" = yes ] && ! [ -d $source_path/bsd-user/$targetos ]; then
1114         error_exit "bsd-user not supported on this host OS"
1115     fi
1116 fi
1117 if [ "$softmmu" = "yes" ]; then
1118     mak_wilds="${mak_wilds} $source_path/configs/targets/*-softmmu.mak"
1119 fi
1120 if [ "$linux_user" = "yes" ]; then
1121     mak_wilds="${mak_wilds} $source_path/configs/targets/*-linux-user.mak"
1122 fi
1123 if [ "$bsd_user" = "yes" ]; then
1124     mak_wilds="${mak_wilds} $source_path/configs/targets/*-bsd-user.mak"
1125 fi
1126
1127 for config in $mak_wilds; do
1128     target="$(basename "$config" .mak)"
1129     if echo "$target_list_exclude" | grep -vq "$target"; then
1130         default_target_list="${default_target_list} $target"
1131     fi
1132 done
1133
1134 if test x"$show_help" = x"yes" ; then
1135 cat << EOF
1136
1137 Usage: configure [options]
1138 Options: [defaults in brackets after descriptions]
1139
1140 Standard options:
1141   --help                   print this message
1142   --prefix=PREFIX          install in PREFIX [$prefix]
1143   --interp-prefix=PREFIX   where to find shared libraries, etc.
1144                            use %M for cpu name [$interp_prefix]
1145   --target-list=LIST       set target list (default: build all)
1146 $(echo Available targets: $default_target_list | \
1147   fold -s -w 53 | sed -e 's/^/                           /')
1148   --target-list-exclude=LIST exclude a set of targets from the default target-list
1149
1150 Advanced options (experts only):
1151   --cross-prefix=PREFIX    use PREFIX for compile tools, PREFIX can be blank [$cross_prefix]
1152   --cc=CC                  use C compiler CC [$cc]
1153   --iasl=IASL              use ACPI compiler IASL [$iasl]
1154   --host-cc=CC             use C compiler CC [$host_cc] for code run at
1155                            build time
1156   --cxx=CXX                use C++ compiler CXX [$cxx]
1157   --objcc=OBJCC            use Objective-C compiler OBJCC [$objcc]
1158   --extra-cflags=CFLAGS    append extra C compiler flags CFLAGS
1159   --extra-cxxflags=CXXFLAGS append extra C++ compiler flags CXXFLAGS
1160   --extra-objcflags=OBJCFLAGS append extra Objective C compiler flags OBJCFLAGS
1161   --extra-ldflags=LDFLAGS  append extra linker flags LDFLAGS
1162   --cross-cc-ARCH=CC       use compiler when building ARCH guest test cases
1163   --cross-cc-cflags-ARCH=  use compiler flags when building ARCH guest tests
1164   --make=MAKE              use specified make [$make]
1165   --python=PYTHON          use specified python [$python]
1166   --sphinx-build=SPHINX    use specified sphinx-build [$sphinx_build]
1167   --meson=MESON            use specified meson [$meson]
1168   --ninja=NINJA            use specified ninja [$ninja]
1169   --smbd=SMBD              use specified smbd [$smbd]
1170   --with-git=GIT           use specified git [$git]
1171   --with-git-submodules=update   update git submodules (default if .git dir exists)
1172   --with-git-submodules=validate fail if git submodules are not up to date
1173   --with-git-submodules=ignore   do not update or check git submodules (default if no .git dir)
1174   --static                 enable static build [$static]
1175   --mandir=PATH            install man pages in PATH
1176   --datadir=PATH           install firmware in PATH/$qemu_suffix
1177   --localedir=PATH         install translation in PATH/$qemu_suffix
1178   --docdir=PATH            install documentation in PATH/$qemu_suffix
1179   --bindir=PATH            install binaries in PATH
1180   --libdir=PATH            install libraries in PATH
1181   --libexecdir=PATH        install helper binaries in PATH
1182   --sysconfdir=PATH        install config in PATH/$qemu_suffix
1183   --localstatedir=PATH     install local state in PATH (set at runtime on win32)
1184   --firmwarepath=PATH      search PATH for firmware files
1185   --efi-aarch64=PATH       PATH of efi file to use for aarch64 VMs.
1186   --with-suffix=SUFFIX     suffix for QEMU data inside datadir/libdir/sysconfdir/docdir [$qemu_suffix]
1187   --with-pkgversion=VERS   use specified string as sub-version of the package
1188   --without-default-features default all --enable-* options to "disabled"
1189   --without-default-devices  do not include any device that is not needed to
1190                            start the emulator (only use if you are including
1191                            desired devices in configs/devices/)
1192   --with-devices-ARCH=NAME override default configs/devices
1193   --enable-debug           enable common debug build options
1194   --enable-sanitizers      enable default sanitizers
1195   --enable-tsan            enable thread sanitizer
1196   --disable-werror         disable compilation abort on warning
1197   --disable-stack-protector disable compiler-provided stack protection
1198   --audio-drv-list=LIST    set audio drivers to try if -audiodev is not used
1199   --block-drv-whitelist=L  Same as --block-drv-rw-whitelist=L
1200   --block-drv-rw-whitelist=L
1201                            set block driver read-write whitelist
1202                            (by default affects only QEMU, not tools like qemu-img)
1203   --block-drv-ro-whitelist=L
1204                            set block driver read-only whitelist
1205                            (by default affects only QEMU, not tools like qemu-img)
1206   --with-trace-file=NAME   Full PATH,NAME of file to store traces
1207                            Default:trace-<pid>
1208   --cpu=CPU                Build for host CPU [$cpu]
1209   --with-coroutine=BACKEND coroutine backend. Supported options:
1210                            ucontext, sigaltstack, windows
1211   --enable-gcov            enable test coverage analysis with gcov
1212   --tls-priority           default TLS protocol/cipher priority string
1213   --enable-plugins
1214                            enable plugins via shared library loading
1215   --disable-containers     don't use containers for cross-building
1216   --gdb=GDB-path           gdb to use for gdbstub tests [$gdb_bin]
1217 EOF
1218   meson_options_help
1219 cat << EOF
1220   system          all system emulation targets
1221   user            supported user emulation targets
1222   linux-user      all linux usermode emulation targets
1223   bsd-user        all BSD usermode emulation targets
1224   pie             Position Independent Executables
1225   modules         modules support (non-Windows)
1226   module-upgrades try to load modules from alternate paths for upgrades
1227   debug-tcg       TCG debugging (default is disabled)
1228   debug-info      debugging information
1229   lto             Enable Link-Time Optimization.
1230   safe-stack      SafeStack Stack Smash Protection. Depends on
1231                   clang/llvm >= 3.7 and requires coroutine backend ucontext.
1232   vhost-net       vhost-net kernel acceleration support
1233   vhost-vsock     virtio sockets device support
1234   vhost-scsi      vhost-scsi kernel target support
1235   vhost-crypto    vhost-user-crypto backend support
1236   vhost-kernel    vhost kernel backend support
1237   vhost-user      vhost-user backend support
1238   vhost-vdpa      vhost-vdpa kernel backend support
1239   gio             libgio support
1240
1241 NOTE: The object files are built at the place where configure is launched
1242 EOF
1243 exit 0
1244 fi
1245
1246 # Remove old dependency files to make sure that they get properly regenerated
1247 rm -f */config-devices.mak.d
1248
1249 if test -z "$python"
1250 then
1251     error_exit "Python not found. Use --python=/path/to/python"
1252 fi
1253 if ! has "$make"
1254 then
1255     error_exit "GNU make ($make) not found"
1256 fi
1257
1258 # Note that if the Python conditional here evaluates True we will exit
1259 # with status 1 which is a shell 'false' value.
1260 if ! $python -c 'import sys; sys.exit(sys.version_info < (3,6))'; then
1261   error_exit "Cannot use '$python', Python >= 3.6 is required." \
1262       "Use --python=/path/to/python to specify a supported Python."
1263 fi
1264
1265 # Preserve python version since some functionality is dependent on it
1266 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)
1267
1268 # Suppress writing compiled files
1269 python="$python -B"
1270
1271 if test -z "$meson"; then
1272     if test "$explicit_python" = no && has meson && version_ge "$(meson --version)" 0.59.3; then
1273         meson=meson
1274     elif test $git_submodules_action != 'ignore' ; then
1275         meson=git
1276     elif test -e "${source_path}/meson/meson.py" ; then
1277         meson=internal
1278     else
1279         if test "$explicit_python" = yes; then
1280             error_exit "--python requires using QEMU's embedded Meson distribution, but it was not found."
1281         else
1282             error_exit "Meson not found.  Use --meson=/path/to/meson"
1283         fi
1284     fi
1285 else
1286     # Meson uses its own Python interpreter to invoke other Python scripts,
1287     # but the user wants to use the one they specified with --python.
1288     #
1289     # We do not want to override the distro Python interpreter (and sometimes
1290     # cannot: for example in Homebrew /usr/bin/meson is a bash script), so
1291     # just require --meson=git|internal together with --python.
1292     if test "$explicit_python" = yes; then
1293         case "$meson" in
1294             git | internal) ;;
1295             *) error_exit "--python requires using QEMU's embedded Meson distribution." ;;
1296         esac
1297     fi
1298 fi
1299
1300 if test "$meson" = git; then
1301     git_submodules="${git_submodules} meson"
1302 fi
1303
1304 case "$meson" in
1305     git | internal)
1306         meson="$python ${source_path}/meson/meson.py"
1307         ;;
1308     *) meson=$(command -v "$meson") ;;
1309 esac
1310
1311 # Probe for ninja
1312
1313 if test -z "$ninja"; then
1314     for c in ninja ninja-build samu; do
1315         if has $c; then
1316             ninja=$(command -v "$c")
1317             break
1318         fi
1319     done
1320     if test -z "$ninja"; then
1321       error_exit "Cannot find Ninja"
1322     fi
1323 fi
1324
1325 # Check that the C compiler works. Doing this here before testing
1326 # the host CPU ensures that we had a valid CC to autodetect the
1327 # $cpu var (and we should bail right here if that's not the case).
1328 # It also allows the help message to be printed without a CC.
1329 write_c_skeleton;
1330 if compile_object ; then
1331   : C compiler works ok
1332 else
1333     error_exit "\"$cc\" either does not exist or does not work"
1334 fi
1335 if ! compile_prog ; then
1336     error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
1337 fi
1338
1339 # Consult white-list to determine whether to enable werror
1340 # by default.  Only enable by default for git builds
1341 if test -z "$werror" ; then
1342     if test "$git_submodules_action" != "ignore" && \
1343         { test "$linux" = "yes" || test "$mingw32" = "yes"; }; then
1344         werror="yes"
1345     else
1346         werror="no"
1347     fi
1348 fi
1349
1350 if test "$targetos" = "bogus"; then
1351     # Now that we know that we're not printing the help and that
1352     # the compiler works (so the results of the check_defines we used
1353     # to identify the OS are reliable), if we didn't recognize the
1354     # host OS we should stop now.
1355     error_exit "Unrecognized host OS (uname -s reports '$(uname -s)')"
1356 fi
1357
1358 # Check whether the compiler matches our minimum requirements:
1359 cat > $TMPC << EOF
1360 #if defined(__clang_major__) && defined(__clang_minor__)
1361 # ifdef __apple_build_version__
1362 #  if __clang_major__ < 10 || (__clang_major__ == 10 && __clang_minor__ < 0)
1363 #   error You need at least XCode Clang v10.0 to compile QEMU
1364 #  endif
1365 # else
1366 #  if __clang_major__ < 6 || (__clang_major__ == 6 && __clang_minor__ < 0)
1367 #   error You need at least Clang v6.0 to compile QEMU
1368 #  endif
1369 # endif
1370 #elif defined(__GNUC__) && defined(__GNUC_MINOR__)
1371 # if __GNUC__ < 7 || (__GNUC__ == 7 && __GNUC_MINOR__ < 4)
1372 #  error You need at least GCC v7.4.0 to compile QEMU
1373 # endif
1374 #else
1375 # error You either need GCC or Clang to compiler QEMU
1376 #endif
1377 int main (void) { return 0; }
1378 EOF
1379 if ! compile_prog "" "" ; then
1380     error_exit "You need at least GCC v7.4 or Clang v6.0 (or XCode Clang v10.0)"
1381 fi
1382
1383 # Accumulate -Wfoo and -Wno-bar separately.
1384 # We will list all of the enable flags first, and the disable flags second.
1385 # Note that we do not add -Werror, because that would enable it for all
1386 # configure tests. If a configure test failed due to -Werror this would
1387 # just silently disable some features, so it's too error prone.
1388
1389 warn_flags=
1390 add_to warn_flags -Wold-style-declaration
1391 add_to warn_flags -Wold-style-definition
1392 add_to warn_flags -Wtype-limits
1393 add_to warn_flags -Wformat-security
1394 add_to warn_flags -Wformat-y2k
1395 add_to warn_flags -Winit-self
1396 add_to warn_flags -Wignored-qualifiers
1397 add_to warn_flags -Wempty-body
1398 add_to warn_flags -Wnested-externs
1399 add_to warn_flags -Wendif-labels
1400 add_to warn_flags -Wexpansion-to-defined
1401 add_to warn_flags -Wimplicit-fallthrough=2
1402
1403 nowarn_flags=
1404 add_to nowarn_flags -Wno-initializer-overrides
1405 add_to nowarn_flags -Wno-missing-include-dirs
1406 add_to nowarn_flags -Wno-shift-negative-value
1407 add_to nowarn_flags -Wno-string-plus-int
1408 add_to nowarn_flags -Wno-typedef-redefinition
1409 add_to nowarn_flags -Wno-tautological-type-limit-compare
1410 add_to nowarn_flags -Wno-psabi
1411
1412 gcc_flags="$warn_flags $nowarn_flags"
1413
1414 cc_has_warning_flag() {
1415     write_c_skeleton;
1416
1417     # Use the positive sense of the flag when testing for -Wno-wombat
1418     # support (gcc will happily accept the -Wno- form of unknown
1419     # warning options).
1420     optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1421     compile_prog "-Werror $optflag" ""
1422 }
1423
1424 objcc_has_warning_flag() {
1425     cat > $TMPM <<EOF
1426 int main(void) { return 0; }
1427 EOF
1428
1429     # Use the positive sense of the flag when testing for -Wno-wombat
1430     # support (gcc will happily accept the -Wno- form of unknown
1431     # warning options).
1432     optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1433     do_objc -Werror $optflag \
1434       $OBJCFLAGS $EXTRA_OBJCFLAGS $CONFIGURE_OBJCFLAGS $QEMU_OBJCFLAGS \
1435       -o $TMPE $TMPM $QEMU_LDFLAGS
1436 }
1437
1438 for flag in $gcc_flags; do
1439     if cc_has_warning_flag $flag ; then
1440         QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1441     fi
1442     if objcc_has_warning_flag $flag ; then
1443         QEMU_OBJCFLAGS="$QEMU_OBJCFLAGS $flag"
1444     fi
1445 done
1446
1447 if test "$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 $xen_stable_libs "
2018       fi
2019     fi
2020   fi
2021 fi
2022
2023 ##########################################
2024 # glib support probe
2025
2026 glib_req_ver=2.56
2027 glib_modules=gthread-2.0
2028 if test "$modules" = yes; then
2029     glib_modules="$glib_modules gmodule-export-2.0"
2030 elif test "$plugins" = "yes"; then
2031     glib_modules="$glib_modules gmodule-no-export-2.0"
2032 fi
2033
2034 for i in $glib_modules; do
2035     if $pkg_config --atleast-version=$glib_req_ver $i; then
2036         glib_cflags=$($pkg_config --cflags $i)
2037         glib_libs=$($pkg_config --libs $i)
2038     else
2039         error_exit "glib-$glib_req_ver $i is required to compile QEMU"
2040     fi
2041 done
2042
2043 # This workaround is required due to a bug in pkg-config file for glib as it
2044 # doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
2045
2046 if test "$static" = yes && test "$mingw32" = yes; then
2047     glib_cflags="-DGLIB_STATIC_COMPILATION $glib_cflags"
2048 fi
2049
2050 if ! test "$gio" = "no"; then
2051     pass=no
2052     if $pkg_config --atleast-version=$glib_req_ver gio-2.0; then
2053         gio_cflags=$($pkg_config --cflags gio-2.0)
2054         gio_libs=$($pkg_config --libs gio-2.0)
2055         gdbus_codegen=$($pkg_config --variable=gdbus_codegen gio-2.0)
2056         if ! has "$gdbus_codegen"; then
2057             gdbus_codegen=
2058         fi
2059         # Check that the libraries actually work -- Ubuntu 18.04 ships
2060         # with pkg-config --static --libs data for gio-2.0 that is missing
2061         # -lblkid and will give a link error.
2062         cat > $TMPC <<EOF
2063 #include <gio/gio.h>
2064 int main(void)
2065 {
2066     g_dbus_proxy_new_sync(0, 0, 0, 0, 0, 0, 0, 0);
2067     return 0;
2068 }
2069 EOF
2070         if compile_prog "$gio_cflags" "$gio_libs" ; then
2071             pass=yes
2072         else
2073             pass=no
2074         fi
2075
2076         if test "$pass" = "yes" &&
2077             $pkg_config --atleast-version=$glib_req_ver gio-unix-2.0; then
2078             gio_cflags="$gio_cflags $($pkg_config --cflags gio-unix-2.0)"
2079             gio_libs="$gio_libs $($pkg_config --libs gio-unix-2.0)"
2080         fi
2081     fi
2082
2083     if test "$pass" = "no"; then
2084         if test "$gio" = "yes"; then
2085             feature_not_found "gio" "Install libgio >= 2.0"
2086         else
2087             gio=no
2088         fi
2089     else
2090         gio=yes
2091     fi
2092 fi
2093
2094 # Sanity check that the current size_t matches the
2095 # size that glib thinks it should be. This catches
2096 # problems on multi-arch where people try to build
2097 # 32-bit QEMU while pointing at 64-bit glib headers
2098 cat > $TMPC <<EOF
2099 #include <glib.h>
2100 #include <unistd.h>
2101
2102 #define QEMU_BUILD_BUG_ON(x) \
2103   typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
2104
2105 int main(void) {
2106    QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
2107    return 0;
2108 }
2109 EOF
2110
2111 if ! compile_prog "$glib_cflags" "$glib_libs" ; then
2112     error_exit "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T."\
2113                "You probably need to set PKG_CONFIG_LIBDIR"\
2114                "to point to the right pkg-config files for your"\
2115                "build target"
2116 fi
2117
2118 # Silence clang warnings triggered by glib < 2.57.2
2119 cat > $TMPC << EOF
2120 #include <glib.h>
2121 typedef struct Foo {
2122     int i;
2123 } Foo;
2124 static void foo_free(Foo *f)
2125 {
2126     g_free(f);
2127 }
2128 G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free)
2129 int main(void) { return 0; }
2130 EOF
2131 if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
2132     if cc_has_warning_flag "-Wno-unused-function"; then
2133         glib_cflags="$glib_cflags -Wno-unused-function"
2134         CONFIGURE_CFLAGS="$CONFIGURE_CFLAGS -Wno-unused-function"
2135     fi
2136 fi
2137
2138 ##########################################
2139 # SHA command probe for modules
2140 if test "$modules" = yes; then
2141     shacmd_probe="sha1sum sha1 shasum"
2142     for c in $shacmd_probe; do
2143         if has $c; then
2144             shacmd="$c"
2145             break
2146         fi
2147     done
2148     if test "$shacmd" = ""; then
2149         error_exit "one of the checksum commands is required to enable modules: $shacmd_probe"
2150     fi
2151 fi
2152
2153 ##########################################
2154 # fdt probe
2155
2156 case "$fdt" in
2157   auto | enabled | internal)
2158     # Simpler to always update submodule, even if not needed.
2159     git_submodules="${git_submodules} dtc"
2160     ;;
2161 esac
2162
2163 ##########################################
2164 # capstone
2165
2166 case "$capstone" in
2167   auto | enabled | internal)
2168     # Simpler to always update submodule, even if not needed.
2169     git_submodules="${git_submodules} capstone"
2170     ;;
2171 esac
2172
2173 ##########################################
2174 # check and set a backend for coroutine
2175
2176 # We prefer ucontext, but it's not always possible. The fallback
2177 # is sigcontext. On Windows the only valid backend is the Windows
2178 # specific one.
2179
2180 ucontext_works=no
2181 if test "$darwin" != "yes"; then
2182   cat > $TMPC << EOF
2183 #include <ucontext.h>
2184 #ifdef __stub_makecontext
2185 #error Ignoring glibc stub makecontext which will always fail
2186 #endif
2187 int main(void) { makecontext(0, 0, 0); return 0; }
2188 EOF
2189   if compile_prog "" "" ; then
2190     ucontext_works=yes
2191   fi
2192 fi
2193
2194 if test "$coroutine" = ""; then
2195   if test "$mingw32" = "yes"; then
2196     coroutine=win32
2197   elif test "$ucontext_works" = "yes"; then
2198     coroutine=ucontext
2199   else
2200     coroutine=sigaltstack
2201   fi
2202 else
2203   case $coroutine in
2204   windows)
2205     if test "$mingw32" != "yes"; then
2206       error_exit "'windows' coroutine backend only valid for Windows"
2207     fi
2208     # Unfortunately the user visible backend name doesn't match the
2209     # coroutine-*.c filename for this case, so we have to adjust it here.
2210     coroutine=win32
2211     ;;
2212   ucontext)
2213     if test "$ucontext_works" != "yes"; then
2214       feature_not_found "ucontext"
2215     fi
2216     ;;
2217   sigaltstack)
2218     if test "$mingw32" = "yes"; then
2219       error_exit "only the 'windows' coroutine backend is valid for Windows"
2220     fi
2221     ;;
2222   *)
2223     error_exit "unknown coroutine backend $coroutine"
2224     ;;
2225   esac
2226 fi
2227
2228 ##################################################
2229 # SafeStack
2230
2231
2232 if test "$safe_stack" = "yes"; then
2233 cat > $TMPC << EOF
2234 int main(int argc, char *argv[])
2235 {
2236 #if ! __has_feature(safe_stack)
2237 #error SafeStack Disabled
2238 #endif
2239     return 0;
2240 }
2241 EOF
2242   flag="-fsanitize=safe-stack"
2243   # Check that safe-stack is supported and enabled.
2244   if compile_prog "-Werror $flag" "$flag"; then
2245     # Flag needed both at compilation and at linking
2246     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
2247     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
2248   else
2249     error_exit "SafeStack not supported by your compiler"
2250   fi
2251   if test "$coroutine" != "ucontext"; then
2252     error_exit "SafeStack is only supported by the coroutine backend ucontext"
2253   fi
2254 else
2255 cat > $TMPC << EOF
2256 int main(int argc, char *argv[])
2257 {
2258 #if defined(__has_feature)
2259 #if __has_feature(safe_stack)
2260 #error SafeStack Enabled
2261 #endif
2262 #endif
2263     return 0;
2264 }
2265 EOF
2266 if test "$safe_stack" = "no"; then
2267   # Make sure that safe-stack is disabled
2268   if ! compile_prog "-Werror" ""; then
2269     # SafeStack was already enabled, try to explicitly remove the feature
2270     flag="-fno-sanitize=safe-stack"
2271     if ! compile_prog "-Werror $flag" "$flag"; then
2272       error_exit "Configure cannot disable SafeStack"
2273     fi
2274     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
2275     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
2276   fi
2277 else # "$safe_stack" = ""
2278   # Set safe_stack to yes or no based on pre-existing flags
2279   if compile_prog "-Werror" ""; then
2280     safe_stack="no"
2281   else
2282     safe_stack="yes"
2283     if test "$coroutine" != "ucontext"; then
2284       error_exit "SafeStack is only supported by the coroutine backend ucontext"
2285     fi
2286   fi
2287 fi
2288 fi
2289
2290 ########################################
2291 # check if ccache is interfering with
2292 # semantic analysis of macros
2293
2294 unset CCACHE_CPP2
2295 ccache_cpp2=no
2296 cat > $TMPC << EOF
2297 static const int Z = 1;
2298 #define fn() ({ Z; })
2299 #define TAUT(X) ((X) == Z)
2300 #define PAREN(X, Y) (X == Y)
2301 #define ID(X) (X)
2302 int main(int argc, char *argv[])
2303 {
2304     int x = 0, y = 0;
2305     x = ID(x);
2306     x = fn();
2307     fn();
2308     if (PAREN(x, y)) return 0;
2309     if (TAUT(Z)) return 0;
2310     return 0;
2311 }
2312 EOF
2313
2314 if ! compile_object "-Werror"; then
2315     ccache_cpp2=yes
2316 fi
2317
2318 #################################################
2319 # clang does not support glibc + FORTIFY_SOURCE.
2320
2321 if test "$fortify_source" != "no"; then
2322   if echo | $cc -dM -E - | grep __clang__ > /dev/null 2>&1 ; then
2323     fortify_source="no";
2324   elif test -n "$cxx" && has $cxx &&
2325        echo | $cxx -dM -E - | grep __clang__ >/dev/null 2>&1 ; then
2326     fortify_source="no";
2327   else
2328     fortify_source="yes"
2329   fi
2330 fi
2331
2332 ##########################################
2333 # checks for sanitizers
2334
2335 have_asan=no
2336 have_ubsan=no
2337 have_asan_iface_h=no
2338 have_asan_iface_fiber=no
2339
2340 if test "$sanitizers" = "yes" ; then
2341   write_c_skeleton
2342   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" ""; then
2343       have_asan=yes
2344   fi
2345
2346   # we could use a simple skeleton for flags checks, but this also
2347   # detect the static linking issue of ubsan, see also:
2348   # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84285
2349   cat > $TMPC << EOF
2350 #include <stdlib.h>
2351 int main(void) {
2352     void *tmp = malloc(10);
2353     if (tmp != NULL) {
2354         return *(int *)(tmp + 2);
2355     }
2356     return 1;
2357 }
2358 EOF
2359   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=undefined" ""; then
2360       have_ubsan=yes
2361   fi
2362
2363   if check_include "sanitizer/asan_interface.h" ; then
2364       have_asan_iface_h=yes
2365   fi
2366
2367   cat > $TMPC << EOF
2368 #include <sanitizer/asan_interface.h>
2369 int main(void) {
2370   __sanitizer_start_switch_fiber(0, 0, 0);
2371   return 0;
2372 }
2373 EOF
2374   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" "" ; then
2375       have_asan_iface_fiber=yes
2376   fi
2377 fi
2378
2379 # Thread sanitizer is, for now, much noisier than the other sanitizers;
2380 # keep it separate until that is not the case.
2381 if test "$tsan" = "yes" && test "$sanitizers" = "yes"; then
2382   error_exit "TSAN is not supported with other sanitiziers."
2383 fi
2384 have_tsan=no
2385 have_tsan_iface_fiber=no
2386 if test "$tsan" = "yes" ; then
2387   write_c_skeleton
2388   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
2389       have_tsan=yes
2390   fi
2391   cat > $TMPC << EOF
2392 #include <sanitizer/tsan_interface.h>
2393 int main(void) {
2394   __tsan_create_fiber(0);
2395   return 0;
2396 }
2397 EOF
2398   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
2399       have_tsan_iface_fiber=yes
2400   fi
2401 fi
2402
2403 ##########################################
2404 # check for slirp
2405
2406 case "$slirp" in
2407   auto | enabled | internal)
2408     # Simpler to always update submodule, even if not needed.
2409     git_submodules="${git_submodules} slirp"
2410     ;;
2411 esac
2412
2413 ##########################################
2414 # End of CC checks
2415 # After here, no more $cc or $ld runs
2416
2417 write_c_skeleton
2418
2419 if test "$fortify_source" = "yes" ; then
2420   QEMU_CFLAGS="-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $QEMU_CFLAGS"
2421   debug=no
2422 fi
2423
2424 case "$ARCH" in
2425 alpha)
2426   # Ensure there's only a single GP
2427   QEMU_CFLAGS="-msmall-data $QEMU_CFLAGS"
2428 ;;
2429 esac
2430
2431 if test "$have_asan" = "yes"; then
2432   QEMU_CFLAGS="-fsanitize=address $QEMU_CFLAGS"
2433   QEMU_LDFLAGS="-fsanitize=address $QEMU_LDFLAGS"
2434   if test "$have_asan_iface_h" = "no" ; then
2435       echo "ASAN build enabled, but ASAN header missing." \
2436            "Without code annotation, the report may be inferior."
2437   elif test "$have_asan_iface_fiber" = "no" ; then
2438       echo "ASAN build enabled, but ASAN header is too old." \
2439            "Without code annotation, the report may be inferior."
2440   fi
2441 fi
2442 if test "$have_tsan" = "yes" ; then
2443   if test "$have_tsan_iface_fiber" = "yes" ; then
2444     QEMU_CFLAGS="-fsanitize=thread $QEMU_CFLAGS"
2445     QEMU_LDFLAGS="-fsanitize=thread $QEMU_LDFLAGS"
2446   else
2447     error_exit "Cannot enable TSAN due to missing fiber annotation interface."
2448   fi
2449 elif test "$tsan" = "yes" ; then
2450   error_exit "Cannot enable TSAN due to missing sanitize thread interface."
2451 fi
2452 if test "$have_ubsan" = "yes"; then
2453   QEMU_CFLAGS="-fsanitize=undefined $QEMU_CFLAGS"
2454   QEMU_LDFLAGS="-fsanitize=undefined $QEMU_LDFLAGS"
2455 fi
2456
2457 ##########################################
2458
2459 # Exclude --warn-common with TSan to suppress warnings from the TSan libraries.
2460 if test "$solaris" = "no" && test "$tsan" = "no"; then
2461     if $ld --version 2>/dev/null | grep "GNU ld" >/dev/null 2>/dev/null ; then
2462         QEMU_LDFLAGS="-Wl,--warn-common $QEMU_LDFLAGS"
2463     fi
2464 fi
2465
2466 # Use ASLR, no-SEH and DEP if available
2467 if test "$mingw32" = "yes" ; then
2468     flags="--no-seh --nxcompat"
2469
2470     # Disable ASLR for debug builds to allow debugging with gdb
2471     if test "$debug" = "no" ; then
2472         flags="--dynamicbase $flags"
2473     fi
2474
2475     for flag in $flags; do
2476         if ld_has $flag ; then
2477             QEMU_LDFLAGS="-Wl,$flag $QEMU_LDFLAGS"
2478         fi
2479     done
2480 fi
2481
2482 # Guest agent Windows MSI package
2483
2484 if test "$QEMU_GA_MANUFACTURER" = ""; then
2485   QEMU_GA_MANUFACTURER=QEMU
2486 fi
2487 if test "$QEMU_GA_DISTRO" = ""; then
2488   QEMU_GA_DISTRO=Linux
2489 fi
2490 if test "$QEMU_GA_VERSION" = ""; then
2491     QEMU_GA_VERSION=$(cat $source_path/VERSION)
2492 fi
2493
2494 QEMU_GA_MSI_MINGW_BIN_PATH="$($pkg_config --variable=prefix glib-2.0)/bin"
2495
2496 # Mac OS X ships with a broken assembler
2497 roms=
2498 if { test "$cpu" = "i386" || test "$cpu" = "x86_64"; } && \
2499         test "$targetos" != "darwin" && test "$targetos" != "sunos" && \
2500         test "$targetos" != "haiku" && test "$softmmu" = yes ; then
2501     # Different host OS linkers have different ideas about the name of the ELF
2502     # emulation. Linux and OpenBSD/amd64 use 'elf_i386'; FreeBSD uses the _fbsd
2503     # variant; OpenBSD/i386 uses the _obsd variant; and Windows uses i386pe.
2504     for emu in elf_i386 elf_i386_fbsd elf_i386_obsd i386pe; do
2505         if "$ld" -verbose 2>&1 | grep -q "^[[:space:]]*$emu[[:space:]]*$"; then
2506             ld_i386_emulation="$emu"
2507             roms="optionrom"
2508             break
2509         fi
2510     done
2511 fi
2512
2513 # Only build s390-ccw bios if we're on s390x and the compiler has -march=z900
2514 # or -march=z10 (which is the lowest architecture level that Clang supports)
2515 if test "$cpu" = "s390x" ; then
2516   write_c_skeleton
2517   compile_prog "-march=z900" ""
2518   has_z900=$?
2519   if [ $has_z900 = 0 ] || compile_object "-march=z10 -msoft-float -Werror"; then
2520     if [ $has_z900 != 0 ]; then
2521       echo "WARNING: Your compiler does not support the z900!"
2522       echo "         The s390-ccw bios will only work with guest CPUs >= z10."
2523     fi
2524     roms="$roms s390-ccw"
2525     # SLOF is required for building the s390-ccw firmware on s390x,
2526     # since it is using the libnet code from SLOF for network booting.
2527     git_submodules="${git_submodules} roms/SLOF"
2528   fi
2529 fi
2530
2531 # Check that the C++ compiler exists and works with the C compiler.
2532 # All the QEMU_CXXFLAGS are based on QEMU_CFLAGS. Keep this at the end to don't miss any other that could be added.
2533 if has $cxx; then
2534     cat > $TMPC <<EOF
2535 int c_function(void);
2536 int main(void) { return c_function(); }
2537 EOF
2538
2539     compile_object
2540
2541     cat > $TMPCXX <<EOF
2542 extern "C" {
2543    int c_function(void);
2544 }
2545 int c_function(void) { return 42; }
2546 EOF
2547
2548     update_cxxflags
2549
2550     if do_cxx $CXXFLAGS $EXTRA_CXXFLAGS $CONFIGURE_CXXFLAGS $QEMU_CXXFLAGS -o $TMPE $TMPCXX $TMPO $QEMU_LDFLAGS; then
2551         # C++ compiler $cxx works ok with C compiler $cc
2552         :
2553     else
2554         echo "C++ compiler $cxx does not work with C compiler $cc"
2555         echo "Disabling C++ specific optional code"
2556         cxx=
2557     fi
2558 else
2559     echo "No C++ compiler available; disabling C++ specific optional code"
2560     cxx=
2561 fi
2562
2563 if !(GIT="$git" "$source_path/scripts/git-submodule.sh" "$git_submodules_action" "$git_submodules"); then
2564     exit 1
2565 fi
2566
2567 config_host_mak="config-host.mak"
2568
2569 echo "# Automatically generated by configure - do not modify" > $config_host_mak
2570 echo >> $config_host_mak
2571
2572 echo all: >> $config_host_mak
2573 echo "GIT=$git" >> $config_host_mak
2574 echo "GIT_SUBMODULES=$git_submodules" >> $config_host_mak
2575 echo "GIT_SUBMODULES_ACTION=$git_submodules_action" >> $config_host_mak
2576
2577 if test "$debug_tcg" = "yes" ; then
2578   echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
2579 fi
2580 if test "$mingw32" = "yes" ; then
2581   echo "CONFIG_WIN32=y" >> $config_host_mak
2582   echo "QEMU_GA_MSI_MINGW_BIN_PATH=${QEMU_GA_MSI_MINGW_BIN_PATH}" >> $config_host_mak
2583   echo "QEMU_GA_MANUFACTURER=${QEMU_GA_MANUFACTURER}" >> $config_host_mak
2584   echo "QEMU_GA_DISTRO=${QEMU_GA_DISTRO}" >> $config_host_mak
2585   echo "QEMU_GA_VERSION=${QEMU_GA_VERSION}" >> $config_host_mak
2586 else
2587   echo "CONFIG_POSIX=y" >> $config_host_mak
2588 fi
2589
2590 if test "$linux" = "yes" ; then
2591   echo "CONFIG_LINUX=y" >> $config_host_mak
2592 fi
2593
2594 if test "$darwin" = "yes" ; then
2595   echo "CONFIG_DARWIN=y" >> $config_host_mak
2596 fi
2597
2598 if test "$solaris" = "yes" ; then
2599   echo "CONFIG_SOLARIS=y" >> $config_host_mak
2600 fi
2601 if test "$static" = "yes" ; then
2602   echo "CONFIG_STATIC=y" >> $config_host_mak
2603 fi
2604 echo "CONFIG_BDRV_RW_WHITELIST=$block_drv_rw_whitelist" >> $config_host_mak
2605 echo "CONFIG_BDRV_RO_WHITELIST=$block_drv_ro_whitelist" >> $config_host_mak
2606 qemu_version=$(head $source_path/VERSION)
2607 echo "PKGVERSION=$pkgversion" >>$config_host_mak
2608 echo "SRC_PATH=$source_path" >> $config_host_mak
2609 echo "TARGET_DIRS=$target_list" >> $config_host_mak
2610 if test "$modules" = "yes"; then
2611   # $shacmd can generate a hash started with digit, which the compiler doesn't
2612   # like as an symbol. So prefix it with an underscore
2613   echo "CONFIG_STAMP=_$( (echo $qemu_version; echo $pkgversion; cat $0) | $shacmd - | cut -f1 -d\ )" >> $config_host_mak
2614   echo "CONFIG_MODULES=y" >> $config_host_mak
2615 fi
2616 if test "$module_upgrades" = "yes"; then
2617   echo "CONFIG_MODULE_UPGRADES=y" >> $config_host_mak
2618 fi
2619 if test "$gio" = "yes" ; then
2620     echo "CONFIG_GIO=y" >> $config_host_mak
2621     echo "GIO_CFLAGS=$gio_cflags" >> $config_host_mak
2622     echo "GIO_LIBS=$gio_libs" >> $config_host_mak
2623 fi
2624 if test "$gdbus_codegen" != "" ; then
2625     echo "GDBUS_CODEGEN=$gdbus_codegen" >> $config_host_mak
2626 fi
2627 echo "CONFIG_TLS_PRIORITY=\"$tls_priority\"" >> $config_host_mak
2628
2629 if test "$xen" = "enabled" ; then
2630   echo "CONFIG_XEN_BACKEND=y" >> $config_host_mak
2631   echo "CONFIG_XEN_CTRL_INTERFACE_VERSION=$xen_ctrl_version" >> $config_host_mak
2632   echo "XEN_CFLAGS=$xen_cflags" >> $config_host_mak
2633   echo "XEN_LIBS=$xen_libs" >> $config_host_mak
2634 fi
2635 if test "$vhost_scsi" = "yes" ; then
2636   echo "CONFIG_VHOST_SCSI=y" >> $config_host_mak
2637 fi
2638 if test "$vhost_net" = "yes" ; then
2639   echo "CONFIG_VHOST_NET=y" >> $config_host_mak
2640 fi
2641 if test "$vhost_net_user" = "yes" ; then
2642   echo "CONFIG_VHOST_NET_USER=y" >> $config_host_mak
2643 fi
2644 if test "$vhost_net_vdpa" = "yes" ; then
2645   echo "CONFIG_VHOST_NET_VDPA=y" >> $config_host_mak
2646 fi
2647 if test "$vhost_crypto" = "yes" ; then
2648   echo "CONFIG_VHOST_CRYPTO=y" >> $config_host_mak
2649 fi
2650 if test "$vhost_vsock" = "yes" ; then
2651   echo "CONFIG_VHOST_VSOCK=y" >> $config_host_mak
2652   if test "$vhost_user" = "yes" ; then
2653     echo "CONFIG_VHOST_USER_VSOCK=y" >> $config_host_mak
2654   fi
2655 fi
2656 if test "$vhost_kernel" = "yes" ; then
2657   echo "CONFIG_VHOST_KERNEL=y" >> $config_host_mak
2658 fi
2659 if test "$vhost_user" = "yes" ; then
2660   echo "CONFIG_VHOST_USER=y" >> $config_host_mak
2661 fi
2662 if test "$vhost_vdpa" = "yes" ; then
2663   echo "CONFIG_VHOST_VDPA=y" >> $config_host_mak
2664 fi
2665 if test "$vhost_user_fs" = "yes" ; then
2666   echo "CONFIG_VHOST_USER_FS=y" >> $config_host_mak
2667 fi
2668
2669 # XXX: suppress that
2670 if [ "$bsd" = "yes" ] ; then
2671   echo "CONFIG_BSD=y" >> $config_host_mak
2672 fi
2673
2674 echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
2675
2676 if test "$have_asan_iface_fiber" = "yes" ; then
2677     echo "CONFIG_ASAN_IFACE_FIBER=y" >> $config_host_mak
2678 fi
2679
2680 if test "$have_tsan" = "yes" && test "$have_tsan_iface_fiber" = "yes" ; then
2681     echo "CONFIG_TSAN=y" >> $config_host_mak
2682 fi
2683
2684 if test "$plugins" = "yes" ; then
2685     echo "CONFIG_PLUGIN=y" >> $config_host_mak
2686 fi
2687
2688 if test -n "$gdb_bin"; then
2689     gdb_version=$($gdb_bin --version | head -n 1)
2690     if version_ge ${gdb_version##* } 9.1; then
2691         echo "HAVE_GDB_BIN=$gdb_bin" >> $config_host_mak
2692     fi
2693 fi
2694
2695 echo "ROMS=$roms" >> $config_host_mak
2696 echo "MAKE=$make" >> $config_host_mak
2697 echo "PYTHON=$python" >> $config_host_mak
2698 echo "GENISOIMAGE=$genisoimage" >> $config_host_mak
2699 echo "MESON=$meson" >> $config_host_mak
2700 echo "NINJA=$ninja" >> $config_host_mak
2701 echo "CC=$cc" >> $config_host_mak
2702 echo "AR=$ar" >> $config_host_mak
2703 echo "AS=$as" >> $config_host_mak
2704 echo "CCAS=$ccas" >> $config_host_mak
2705 echo "CPP=$cpp" >> $config_host_mak
2706 echo "OBJCOPY=$objcopy" >> $config_host_mak
2707 echo "LD=$ld" >> $config_host_mak
2708 echo "CFLAGS_NOPIE=$CFLAGS_NOPIE" >> $config_host_mak
2709 echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak
2710 echo "QEMU_CXXFLAGS=$QEMU_CXXFLAGS" >> $config_host_mak
2711 echo "QEMU_OBJCFLAGS=$QEMU_OBJCFLAGS" >> $config_host_mak
2712 echo "GLIB_CFLAGS=$glib_cflags" >> $config_host_mak
2713 echo "GLIB_LIBS=$glib_libs" >> $config_host_mak
2714 echo "GLIB_VERSION=$(pkg-config --modversion glib-2.0)" >> $config_host_mak
2715 echo "QEMU_LDFLAGS=$QEMU_LDFLAGS" >> $config_host_mak
2716 echo "LD_I386_EMULATION=$ld_i386_emulation" >> $config_host_mak
2717 echo "STRIP=$strip" >> $config_host_mak
2718 echo "EXESUF=$EXESUF" >> $config_host_mak
2719
2720 # use included Linux headers
2721 if test "$linux" = "yes" ; then
2722   mkdir -p linux-headers
2723   case "$cpu" in
2724   i386|x86_64)
2725     linux_arch=x86
2726     ;;
2727   ppc|ppc64)
2728     linux_arch=powerpc
2729     ;;
2730   s390x)
2731     linux_arch=s390
2732     ;;
2733   aarch64)
2734     linux_arch=arm64
2735     ;;
2736   loongarch*)
2737     linux_arch=loongarch
2738     ;;
2739   mips64)
2740     linux_arch=mips
2741     ;;
2742   *)
2743     # For most CPUs the kernel architecture name and QEMU CPU name match.
2744     linux_arch="$cpu"
2745     ;;
2746   esac
2747     # For non-KVM architectures we will not have asm headers
2748     if [ -e "$source_path/linux-headers/asm-$linux_arch" ]; then
2749       symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
2750     fi
2751 fi
2752
2753 for target in $target_list; do
2754     target_dir="$target"
2755     target_name=$(echo $target | cut -d '-' -f 1)$EXESUF
2756     mkdir -p $target_dir
2757     case $target in
2758         *-user) symlink "../qemu-$target_name" "$target_dir/qemu-$target_name" ;;
2759         *) symlink "../qemu-system-$target_name" "$target_dir/qemu-system-$target_name" ;;
2760     esac
2761 done
2762
2763 echo "CONFIG_QEMU_INTERP_PREFIX=$interp_prefix" | sed 's/%M/@0@/' >> $config_host_mak
2764 if test "$default_targets" = "yes"; then
2765   echo "CONFIG_DEFAULT_TARGETS=y" >> $config_host_mak
2766 fi
2767
2768 if test "$ccache_cpp2" = "yes"; then
2769   echo "export CCACHE_CPP2=y" >> $config_host_mak
2770 fi
2771
2772 if test "$safe_stack" = "yes"; then
2773   echo "CONFIG_SAFESTACK=y" >> $config_host_mak
2774 fi
2775
2776 # If we're using a separate build tree, set it up now.
2777 # LINKS are things to symlink back into the source tree
2778 # (these can be both files and directories).
2779 # Caution: do not add files or directories here using wildcards. This
2780 # will result in problems later if a new file matching the wildcard is
2781 # added to the source tree -- nothing will cause configure to be rerun
2782 # so the build tree will be missing the link back to the new file, and
2783 # tests might fail. Prefer to keep the relevant files in their own
2784 # directory and symlink the directory instead.
2785 LINKS="Makefile"
2786 LINKS="$LINKS tests/tcg/Makefile.target"
2787 LINKS="$LINKS pc-bios/optionrom/Makefile"
2788 LINKS="$LINKS pc-bios/s390-ccw/Makefile"
2789 LINKS="$LINKS .gdbinit scripts" # scripts needed by relative path in .gdbinit
2790 LINKS="$LINKS tests/avocado tests/data"
2791 LINKS="$LINKS tests/qemu-iotests/check"
2792 LINKS="$LINKS python"
2793 LINKS="$LINKS contrib/plugins/Makefile "
2794 for bios_file in \
2795     $source_path/pc-bios/*.bin \
2796     $source_path/pc-bios/*.elf \
2797     $source_path/pc-bios/*.lid \
2798     $source_path/pc-bios/*.rom \
2799     $source_path/pc-bios/*.dtb \
2800     $source_path/pc-bios/*.img \
2801     $source_path/pc-bios/openbios-* \
2802     $source_path/pc-bios/u-boot.* \
2803     $source_path/pc-bios/palcode-* \
2804     $source_path/pc-bios/qemu_vga.ndrv
2805
2806 do
2807     LINKS="$LINKS pc-bios/$(basename $bios_file)"
2808 done
2809 for f in $LINKS ; do
2810     if [ -e "$source_path/$f" ]; then
2811         mkdir -p `dirname ./$f`
2812         symlink "$source_path/$f" "$f"
2813     fi
2814 done
2815
2816 (for i in $cross_cc_vars; do
2817   export $i
2818 done
2819 export target_list source_path use_containers cpu host_cc
2820 $source_path/tests/tcg/configure.sh)
2821
2822 config_mak=pc-bios/optionrom/config.mak
2823 echo "# Automatically generated by configure - do not modify" > $config_mak
2824 echo "TOPSRC_DIR=$source_path" >> $config_mak
2825
2826 if test "$skip_meson" = no; then
2827   cross="config-meson.cross.new"
2828   meson_quote() {
2829     test $# = 0 && return
2830     echo "'$(echo $* | sed "s/ /','/g")'"
2831   }
2832
2833   echo "# Automatically generated by configure - do not modify" > $cross
2834   echo "[properties]" >> $cross
2835
2836   # unroll any custom device configs
2837   for a in $device_archs; do
2838       eval "c=\$devices_${a}"
2839       echo "${a}-softmmu = '$c'" >> $cross
2840   done
2841
2842   test -z "$cxx" && echo "link_language = 'c'" >> $cross
2843   echo "[built-in options]" >> $cross
2844   echo "c_args = [$(meson_quote $CFLAGS $EXTRA_CFLAGS)]" >> $cross
2845   echo "cpp_args = [$(meson_quote $CXXFLAGS $EXTRA_CXXFLAGS)]" >> $cross
2846   test -n "$objcc" && echo "objc_args = [$(meson_quote $OBJCFLAGS $EXTRA_OBJCFLAGS)]" >> $cross
2847   echo "c_link_args = [$(meson_quote $CFLAGS $LDFLAGS $EXTRA_CFLAGS $EXTRA_LDFLAGS)]" >> $cross
2848   echo "cpp_link_args = [$(meson_quote $CXXFLAGS $LDFLAGS $EXTRA_CXXFLAGS $EXTRA_LDFLAGS)]" >> $cross
2849   echo "[binaries]" >> $cross
2850   echo "c = [$(meson_quote $cc $CPU_CFLAGS)]" >> $cross
2851   test -n "$cxx" && echo "cpp = [$(meson_quote $cxx $CPU_CFLAGS)]" >> $cross
2852   test -n "$objcc" && echo "objc = [$(meson_quote $objcc $CPU_CFLAGS)]" >> $cross
2853   echo "ar = [$(meson_quote $ar)]" >> $cross
2854   echo "nm = [$(meson_quote $nm)]" >> $cross
2855   echo "pkgconfig = [$(meson_quote $pkg_config_exe)]" >> $cross
2856   echo "ranlib = [$(meson_quote $ranlib)]" >> $cross
2857   if has $sdl2_config; then
2858     echo "sdl2-config = [$(meson_quote $sdl2_config)]" >> $cross
2859   fi
2860   echo "strip = [$(meson_quote $strip)]" >> $cross
2861   echo "windres = [$(meson_quote $windres)]" >> $cross
2862   if test "$cross_compile" = "yes"; then
2863     cross_arg="--cross-file config-meson.cross"
2864     echo "[host_machine]" >> $cross
2865     echo "system = '$targetos'" >> $cross
2866     case "$cpu" in
2867         i386)
2868             echo "cpu_family = 'x86'" >> $cross
2869             ;;
2870         *)
2871             echo "cpu_family = '$cpu'" >> $cross
2872             ;;
2873     esac
2874     echo "cpu = '$cpu'" >> $cross
2875     if test "$bigendian" = "yes" ; then
2876         echo "endian = 'big'" >> $cross
2877     else
2878         echo "endian = 'little'" >> $cross
2879     fi
2880   else
2881     cross_arg="--native-file config-meson.cross"
2882   fi
2883   mv $cross config-meson.cross
2884
2885   rm -rf meson-private meson-info meson-logs
2886   run_meson() {
2887     NINJA=$ninja $meson setup \
2888         --prefix "$prefix" \
2889         --libdir "$libdir" \
2890         --libexecdir "$libexecdir" \
2891         --bindir "$bindir" \
2892         --includedir "$includedir" \
2893         --datadir "$datadir" \
2894         --mandir "$mandir" \
2895         --sysconfdir "$sysconfdir" \
2896         --localedir "$localedir" \
2897         --localstatedir "$local_statedir" \
2898         -Daudio_drv_list=$audio_drv_list \
2899         -Ddefault_devices=$default_devices \
2900         -Ddocdir="$docdir" \
2901         -Diasl="$($iasl -h >/dev/null 2>&1 && printf %s "$iasl")" \
2902         -Dqemu_firmwarepath="$firmwarepath" \
2903         -Dqemu_suffix="$qemu_suffix" \
2904         -Dsmbd="$smbd" \
2905         -Dsphinx_build="$sphinx_build" \
2906         -Dtrace_file="$trace_file" \
2907         -Doptimization=$(if test "$debug" = yes; then echo 0; else echo 2; fi) \
2908         -Ddebug=$(if test "$debug_info" = yes; then echo true; else echo false; fi) \
2909         -Dwerror=$(if test "$werror" = yes; then echo true; else echo false; fi) \
2910         -Db_pie=$(if test "$pie" = yes; then echo true; else echo false; fi) \
2911         -Db_coverage=$(if test "$gcov" = yes; then echo true; else echo false; fi) \
2912         -Db_lto=$lto -Dcfi=$cfi -Dtcg=$tcg -Dxen=$xen \
2913         -Dcapstone=$capstone -Dfdt=$fdt -Dslirp=$slirp \
2914         $(test -n "${LIB_FUZZING_ENGINE+xxx}" && echo "-Dfuzzing_engine=$LIB_FUZZING_ENGINE") \
2915         $(if test "$default_feature" = no; then echo "-Dauto_features=disabled"; fi) \
2916         "$@" $cross_arg "$PWD" "$source_path"
2917   }
2918   eval run_meson $meson_options
2919   if test "$?" -ne 0 ; then
2920       error_exit "meson setup failed"
2921   fi
2922 else
2923   if test -f meson-private/cmd_line.txt; then
2924     # Adjust old command line options whose type was changed
2925     # Avoids having to use "setup --wipe" when Meson is upgraded
2926     perl -i -ne '
2927       s/^gettext = true$/gettext = auto/;
2928       s/^gettext = false$/gettext = disabled/;
2929       /^b_staticpic/ && next;
2930       print;' meson-private/cmd_line.txt
2931   fi
2932 fi
2933
2934 # Save the configure command line for later reuse.
2935 cat <<EOD >config.status
2936 #!/bin/sh
2937 # Generated by configure.
2938 # Run this file to recreate the current configuration.
2939 # Compiler output produced by configure, useful for debugging
2940 # configure, is in config.log if it exists.
2941 EOD
2942
2943 preserve_env() {
2944     envname=$1
2945
2946     eval envval=\$$envname
2947
2948     if test -n "$envval"
2949     then
2950         echo "$envname='$envval'" >> config.status
2951         echo "export $envname" >> config.status
2952     else
2953         echo "unset $envname" >> config.status
2954     fi
2955 }
2956
2957 # Preserve various env variables that influence what
2958 # features/build target configure will detect
2959 preserve_env AR
2960 preserve_env AS
2961 preserve_env CC
2962 preserve_env CPP
2963 preserve_env CFLAGS
2964 preserve_env CXX
2965 preserve_env CXXFLAGS
2966 preserve_env INSTALL
2967 preserve_env LD
2968 preserve_env LDFLAGS
2969 preserve_env LD_LIBRARY_PATH
2970 preserve_env LIBTOOL
2971 preserve_env MAKE
2972 preserve_env NM
2973 preserve_env OBJCOPY
2974 preserve_env PATH
2975 preserve_env PKG_CONFIG
2976 preserve_env PKG_CONFIG_LIBDIR
2977 preserve_env PKG_CONFIG_PATH
2978 preserve_env PYTHON
2979 preserve_env SDL2_CONFIG
2980 preserve_env SMBD
2981 preserve_env STRIP
2982 preserve_env WINDRES
2983
2984 printf "exec" >>config.status
2985 for i in "$0" "$@"; do
2986   test "$i" = --skip-meson || printf " %s" "$(quote_sh "$i")" >>config.status
2987 done
2988 echo ' "$@"' >>config.status
2989 chmod +x config.status
2990
2991 rm -r "$TMPDIR1"