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