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   local 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 }
 124
 125 do_compiler_werror() {
 126     # Run the compiler, capturing its output to the log. First argument
 127     # is compiler binary to execute.
 128     compiler="$1"
 129     shift
 130     if test -n "$BASH_VERSION"; then eval '
 131         echo >>config.log "
 132 funcs: ${FUNCNAME[*]}
 133 lines: ${BASH_LINENO[*]}"
 134     '; fi
 135     echo $compiler "$@" >> config.log
 136     $compiler "$@" >> config.log 2>&1 || return $?
 137     # Test passed. If this is an --enable-werror build, rerun
 138     # the test with -Werror and bail out if it fails. This
 139     # makes warning-generating-errors in configure test code
 140     # obvious to developers.
 141     if test "$werror" != "yes"; then
 142         return 0
 143     fi
 144     # Don't bother rerunning the compile if we were already using -Werror
 145     case "$*" in
 146         *-Werror*)
 147            return 0
 148         ;;
 149     esac
 150     echo $compiler -Werror "$@" >> config.log
 151     $compiler -Werror "$@" >> config.log 2>&1 && return $?
 152     error_exit "configure test passed without -Werror but failed with -Werror." \
 153         "This is probably a bug in the configure script. The failing command" \
 154         "will be at the bottom of config.log." \
 155         "You can run configure with --disable-werror to bypass this check."
 156 }
 157
 158 do_cc() {
 159     do_compiler_werror "$cc" $CPU_CFLAGS "$@"
 160 }
 161
 162 do_cxx() {
 163     do_compiler_werror "$cxx" $CPU_CFLAGS "$@"
 164 }
 165
 166 do_objc() {
 167     do_compiler_werror "$objcc" $CPU_CFLAGS "$@"
 168 }
 169
 170 # Append $2 to the variable named $1, with space separation
 171 add_to() {
 172     eval $1=\${$1:+\"\$$1 \"}\$2
 173 }
 174
 175 update_cxxflags() {
 176     # Set QEMU_CXXFLAGS from QEMU_CFLAGS by filtering out those
 177     # options which some versions of GCC's C++ compiler complain about
 178     # because they only make sense for C programs.
 179     QEMU_CXXFLAGS="-D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS"
 180     CONFIGURE_CXXFLAGS=$(echo "$CONFIGURE_CFLAGS" | sed s/-std=gnu11/-std=gnu++11/)
 181     for arg in $QEMU_CFLAGS; do
 182         case $arg in
 183             -Wstrict-prototypes|-Wmissing-prototypes|-Wnested-externs|\
 184             -Wold-style-declaration|-Wold-style-definition|-Wredundant-decls)
 185                 ;;
 186             *)
 187                 QEMU_CXXFLAGS=${QEMU_CXXFLAGS:+$QEMU_CXXFLAGS }$arg
 188                 ;;
 189         esac
 190     done
 191 }
 192
 193 compile_object() {
 194   local_cflags="$1"
 195   do_cc $CFLAGS $EXTRA_CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -c -o $TMPO $TMPC
 196 }
 197
 198 compile_prog() {
 199   local_cflags="$1"
 200   local_ldflags="$2"
 201   do_cc $CFLAGS $EXTRA_CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC \
 202       $LDFLAGS $EXTRA_LDFLAGS $CONFIGURE_LDFLAGS $QEMU_LDFLAGS $local_ldflags
 203 }
 204
 205 # symbolically link $1 to $2.  Portable version of "ln -sf".
 206 symlink() {
 207   rm -rf "$2"
 208   mkdir -p "$(dirname "$2")"
 209   ln -s "$1" "$2"
 210 }
 211
 212 # check whether a command is available to this shell (may be either an
 213 # executable or a builtin)
 214 has() {
 215     type "$1" >/dev/null 2>&1
 216 }
 217
 218 version_ge () {
 219     local_ver1=$(expr "$1" : '\([0-9.]*\)' | tr . ' ')
 220     local_ver2=$(echo "$2" | tr . ' ')
 221     while true; do
 222         set x $local_ver1
 223         local_first=${2-0}
 224         # 'shift 2' if $2 is set, or 'shift' if $2 is not set
 225         shift ${2:+2}
 226         local_ver1=$*
 227         set x $local_ver2
 228         # the second argument finished, the first must be greater or equal
 229         test $# = 1 && return 0
 230         test $local_first -lt $2 && return 1
 231         test $local_first -gt $2 && return 0
 232         shift ${2:+2}
 233         local_ver2=$*
 234     done
 235 }
 236
 237 glob() {
 238     eval test -z '"${1#'"$2"'}"'
 239 }
 240
 241 if printf %s\\n "$source_path" "$PWD" | grep -q "[[:space:]:]";
 242 then
 243   error_exit "main directory cannot contain spaces nor colons"
 244 fi
 245
 246 # default parameters
 247 cpu=""
 248 static="no"
 249 cross_compile="no"
 250 cross_prefix=""
 251 host_cc="cc"
 252 stack_protector=""
 253 safe_stack=""
 254 use_containers="yes"
 255 gdb_bin=$(command -v "gdb-multiarch" || command -v "gdb")
 256
 257 if test -e "$source_path/.git"
 258 then
 259     git_submodules_action="update"
 260 else
 261     git_submodules_action="ignore"
 262 fi
 263
 264 git_submodules="ui/keycodemapdb"
 265 git="git"
 266
 267 # Don't accept a target_list environment variable.
 268 unset target_list
 269 unset target_list_exclude
 270
 271 # Default value for a variable defining feature "foo".
 272 #  * foo="no"  feature will only be used if --enable-foo arg is given
 273 #  * foo=""    feature will be searched for, and if found, will be used
 274 #              unless --disable-foo is given
 275 #  * foo="yes" this value will only be set by --enable-foo flag.
 276 #              feature will searched for,
 277 #              if not found, configure exits with error
 278 #
 279 # Always add --enable-foo and --disable-foo command line args.
 280 # Distributions want to ensure that several features are compiled in, and it
 281 # is impossible without a --enable-foo that exits if a feature is not found.
 282
 283 default_feature=""
 284 # parse CC options second
 285 for opt do
 286   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 287   case "$opt" in
 288       --without-default-features)
 289           default_feature="no"
 290   ;;
 291   esac
 292 done
 293
 294 EXTRA_CFLAGS=""
 295 EXTRA_CXXFLAGS=""
 296 EXTRA_OBJCFLAGS=""
 297 EXTRA_LDFLAGS=""
 298
 299 debug_tcg="no"
 300 sanitizers="no"
 301 tsan="no"
 302 fortify_source="yes"
 303 EXESUF=""
 304 modules="no"
 305 prefix="/usr/local"
 306 qemu_suffix="qemu"
 307 softmmu="yes"
 308 linux_user=""
 309 bsd_user=""
 310 pie=""
 311 coroutine=""
 312 plugins="$default_feature"
 313 meson=""
 314 meson_args=""
 315 ninja=""
 316 bindir="bin"
 317 skip_meson=no
 318
 319 # The following Meson options are handled manually (still they
 320 # are included in the automatically generated help message)
 321
 322 # 1. Track which submodules are needed
 323 if test "$default_feature" = no ; then
 324   slirp="disabled"
 325 else
 326   slirp="auto"
 327 fi
 328 fdt="auto"
 329
 330 # 2. Automatically enable/disable other options
 331 tcg="enabled"
 332 cfi="false"
 333
 334 # parse CC options second
 335 for opt do
 336   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 337   case "$opt" in
 338   --cross-prefix=*) cross_prefix="$optarg"
 339                     cross_compile="yes"
 340   ;;
 341   --cc=*) CC="$optarg"
 342   ;;
 343   --cxx=*) CXX="$optarg"
 344   ;;
 345   --cpu=*) cpu="$optarg"
 346   ;;
 347   --extra-cflags=*)
 348     EXTRA_CFLAGS="$EXTRA_CFLAGS $optarg"
 349     EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
 350     EXTRA_OBJCFLAGS="$EXTRA_OBJCFLAGS $optarg"
 351     ;;
 352   --extra-cxxflags=*) EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
 353   ;;
 354   --extra-objcflags=*) EXTRA_OBJCFLAGS="$EXTRA_OBJCFLAGS $optarg"
 355   ;;
 356   --extra-ldflags=*) EXTRA_LDFLAGS="$EXTRA_LDFLAGS $optarg"
 357   ;;
 358   --cross-cc-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-cc-FOO option"
 359   ;;
 360   --cross-cc-cflags-*) cc_arch=${opt#--cross-cc-cflags-}; cc_arch=${cc_arch%%=*}
 361                       eval "cross_cc_cflags_${cc_arch}=\$optarg"
 362   ;;
 363   --cross-cc-*) cc_arch=${opt#--cross-cc-}; cc_arch=${cc_arch%%=*}
 364                 eval "cross_cc_${cc_arch}=\$optarg"
 365   ;;
 366   esac
 367 done
 368 # OS specific
 369 # Using uname is really, really broken.  Once we have the right set of checks
 370 # we can eliminate its usage altogether.
 371
 372 # Preferred compiler:
 373 #  ${CC} (if set)
 374 #  ${cross_prefix}gcc (if cross-prefix specified)
 375 #  system compiler
 376 if test -z "${CC}${cross_prefix}"; then
 377   cc="$host_cc"
 378 else
 379   cc="${CC-${cross_prefix}gcc}"
 380 fi
 381
 382 if test -z "${CXX}${cross_prefix}"; then
 383   cxx="c++"
 384 else
 385   cxx="${CXX-${cross_prefix}g++}"
 386 fi
 387
 388 ar="${AR-${cross_prefix}ar}"
 389 as="${AS-${cross_prefix}as}"
 390 ccas="${CCAS-$cc}"
 391 objcopy="${OBJCOPY-${cross_prefix}objcopy}"
 392 ld="${LD-${cross_prefix}ld}"
 393 ranlib="${RANLIB-${cross_prefix}ranlib}"
 394 nm="${NM-${cross_prefix}nm}"
 395 smbd="$SMBD"
 396 strip="${STRIP-${cross_prefix}strip}"
 397 widl="${WIDL-${cross_prefix}widl}"
 398 windres="${WINDRES-${cross_prefix}windres}"
 399 pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
 400 query_pkg_config() {
 401     "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
 402 }
 403 pkg_config=query_pkg_config
 404 sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"
 405
 406 # default flags for all hosts
 407 # We use -fwrapv to tell the compiler that we require a C dialect where
 408 # left shift of signed integers is well defined and has the expected
 409 # 2s-complement style results. (Both clang and gcc agree that it
 410 # provides these semantics.)
 411 QEMU_CFLAGS="-fno-strict-aliasing -fno-common -fwrapv"
 412 QEMU_CFLAGS="-Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
 413 QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
 414 QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
 415
 416 QEMU_LDFLAGS=
 417
 418 # Flags that are needed during configure but later taken care of by Meson
 419 CONFIGURE_CFLAGS="-std=gnu11 -Wall"
 420 CONFIGURE_LDFLAGS=
 421
 422
 423 check_define() {
 424 cat > $TMPC <<EOF
 425 #if !defined($1)
 426 #error $1 not defined
 427 #endif
 428 int main(void) { return 0; }
 429 EOF
 430   compile_object
 431 }
 432
 433 check_include() {
 434 cat > $TMPC <<EOF
 435 #include <$1>
 436 int main(void) { return 0; }
 437 EOF
 438   compile_object
 439 }
 440
 441 write_c_skeleton() {
 442     cat > $TMPC <<EOF
 443 int main(void) { return 0; }
 444 EOF
 445 }
 446
 447 if check_define __linux__ ; then
 448   targetos=linux
 449 elif check_define _WIN32 ; then
 450   targetos=windows
 451 elif check_define __OpenBSD__ ; then
 452   targetos=openbsd
 453 elif check_define __sun__ ; then
 454   targetos=sunos
 455 elif check_define __HAIKU__ ; then
 456   targetos=haiku
 457 elif check_define __FreeBSD__ ; then
 458   targetos=freebsd
 459 elif check_define __FreeBSD_kernel__ && check_define __GLIBC__; then
 460   targetos=gnu/kfreebsd
 461 elif check_define __DragonFly__ ; then
 462   targetos=dragonfly
 463 elif check_define __NetBSD__; then
 464   targetos=netbsd
 465 elif check_define __APPLE__; then
 466   targetos=darwin
 467 else
 468   # This is a fatal error, but don't report it yet, because we
 469   # might be going to just print the --help text, or it might
 470   # be the result of a missing compiler.
 471   targetos=bogus
 472 fi
 473
 474 # OS specific
 475
 476 mingw32="no"
 477 bsd="no"
 478 linux="no"
 479 solaris="no"
 480 case $targetos in
 481 windows)
 482   mingw32="yes"
 483   plugins="no"
 484   pie="no"
 485 ;;
 486 gnu/kfreebsd)
 487   bsd="yes"
 488 ;;
 489 freebsd)
 490   bsd="yes"
 491   make="${MAKE-gmake}"
 492   # needed for kinfo_getvmmap(3) in libutil.h
 493 ;;
 494 dragonfly)
 495   bsd="yes"
 496   make="${MAKE-gmake}"
 497 ;;
 498 netbsd)
 499   bsd="yes"
 500   make="${MAKE-gmake}"
 501 ;;
 502 openbsd)
 503   bsd="yes"
 504   make="${MAKE-gmake}"
 505 ;;
 506 darwin)
 507   bsd="yes"
 508   darwin="yes"
 509   # Disable attempts to use ObjectiveC features in os/object.h since they
 510   # won't work when we're compiling with gcc as a C compiler.
 511   QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
 512 ;;
 513 sunos)
 514   solaris="yes"
 515   make="${MAKE-gmake}"
 516 # needed for CMSG_ macros in sys/socket.h
 517   QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
 518 # needed for TIOCWIN* defines in termios.h
 519   QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
 520   # $(uname -m) returns i86pc even on an x86_64 box, so default based on isainfo
 521   # Note that this check is broken for cross-compilation: if you're
 522   # cross-compiling to one of these OSes then you'll need to specify
 523   # the correct CPU with the --cpu option.
 524   if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then
 525     cpu="x86_64"
 526   fi
 527 ;;
 528 haiku)
 529   pie="no"
 530   QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -D_BSD_SOURCE -fPIC $QEMU_CFLAGS"
 531 ;;
 532 linux)
 533   linux="yes"
 534 ;;
 535 esac
 536
 537 if test ! -z "$cpu" ; then
 538   # command line argument
 539   :
 540 elif check_define __i386__ ; then
 541   cpu="i386"
 542 elif check_define __x86_64__ ; then
 543   if check_define __ILP32__ ; then
 544     cpu="x32"
 545   else
 546     cpu="x86_64"
 547   fi
 548 elif check_define __sparc__ ; then
 549   if check_define __arch64__ ; then
 550     cpu="sparc64"
 551   else
 552     cpu="sparc"
 553   fi
 554 elif check_define _ARCH_PPC ; then
 555   if check_define _ARCH_PPC64 ; then
 556     if check_define _LITTLE_ENDIAN ; then
 557       cpu="ppc64le"
 558     else
 559       cpu="ppc64"
 560     fi
 561   else
 562     cpu="ppc"
 563   fi
 564 elif check_define __mips__ ; then
 565   cpu="mips"
 566 elif check_define __s390__ ; then
 567   if check_define __s390x__ ; then
 568     cpu="s390x"
 569   else
 570     cpu="s390"
 571   fi
 572 elif check_define __riscv ; then
 573   cpu="riscv"
 574 elif check_define __arm__ ; then
 575   cpu="arm"
 576 elif check_define __aarch64__ ; then
 577   cpu="aarch64"
 578 elif check_define __loongarch64 ; then
 579   cpu="loongarch64"
 580 else
 581   cpu=$(uname -m)
 582 fi
 583
 584 # Normalise host CPU name, set multilib cflags
 585 # Note that this case should only have supported host CPUs, not guests.
 586 case "$cpu" in
 587   armv*b|armv*l|arm)
 588     cpu="arm" ;;
 589
 590   i386|i486|i586|i686|i86pc|BePC)
 591     cpu="i386"
 592     CPU_CFLAGS="-m32" ;;
 593   x32)
 594     cpu="x86_64"
 595     CPU_CFLAGS="-mx32" ;;
 596   x86_64|amd64)
 597     cpu="x86_64"
 598     # ??? Only extremely old AMD cpus do not have cmpxchg16b.
 599     # If we truly care, we should simply detect this case at
 600     # runtime and generate the fallback to serial emulation.
 601     CPU_CFLAGS="-m64 -mcx16" ;;
 602
 603   mips*)
 604     cpu="mips" ;;
 605
 606   ppc)
 607     CPU_CFLAGS="-m32" ;;
 608   ppc64)
 609     CPU_CFLAGS="-m64 -mbig-endian" ;;
 610   ppc64le)
 611     cpu="ppc64"
 612     CPU_CFLAGS="-m64 -mlittle-endian" ;;
 613
 614   s390)
 615     CPU_CFLAGS="-m31" ;;
 616   s390x)
 617     CPU_CFLAGS="-m64" ;;
 618
 619   sparc|sun4[cdmuv])
 620     cpu="sparc"
 621     CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc" ;;
 622   sparc64)
 623     CPU_CFLAGS="-m64 -mcpu=ultrasparc" ;;
 624 esac
 625
 626 : ${make=${MAKE-make}}
 627
 628 # We prefer python 3.x. A bare 'python' is traditionally
 629 # python 2.x, but some distros have it as python 3.x, so
 630 # we check that too
 631 python=
 632 explicit_python=no
 633 for binary in "${PYTHON-python3}" python
 634 do
 635     if has "$binary"
 636     then
 637         python=$(command -v "$binary")
 638         break
 639     fi
 640 done
 641
 642
 643 # Check for ancillary tools used in testing
 644 genisoimage=
 645 for binary in genisoimage mkisofs
 646 do
 647     if has $binary
 648     then
 649         genisoimage=$(command -v "$binary")
 650         break
 651     fi
 652 done
 653
 654 # Default objcc to clang if available, otherwise use CC
 655 if has clang; then
 656   objcc=clang
 657 else
 658   objcc="$cc"
 659 fi
 660
 661 if test "$mingw32" = "yes" ; then
 662   EXESUF=".exe"
 663   # MinGW needs -mthreads for TLS and macro _MT.
 664   CONFIGURE_CFLAGS="-mthreads $CONFIGURE_CFLAGS"
 665   write_c_skeleton;
 666   prefix="/qemu"
 667   bindir=""
 668   qemu_suffix=""
 669 fi
 670
 671 werror=""
 672
 673 . $source_path/scripts/meson-buildoptions.sh
 674
 675 meson_options=
 676 meson_option_add() {
 677   meson_options="$meson_options $(quote_sh "$1")"
 678 }
 679 meson_option_parse() {
 680   meson_options="$meson_options $(_meson_option_parse "$@")"
 681   if test $? -eq 1; then
 682     echo "ERROR: unknown option $1"
 683     echo "Try '$0 --help' for more information"
 684     exit 1
 685   fi
 686 }
 687
 688 for opt do
 689   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 690   case "$opt" in
 691   --help|-h) show_help=yes
 692   ;;
 693   --version|-V) exec cat $source_path/VERSION
 694   ;;
 695   --prefix=*) prefix="$optarg"
 696   ;;
 697   --cross-prefix=*)
 698   ;;
 699   --cc=*)
 700   ;;
 701   --host-cc=*) host_cc="$optarg"
 702   ;;
 703   --cxx=*)
 704   ;;
 705   --objcc=*) objcc="$optarg"
 706   ;;
 707   --make=*) make="$optarg"
 708   ;;
 709   --install=*)
 710   ;;
 711   --python=*) python="$optarg" ; explicit_python=yes
 712   ;;
 713   --skip-meson) skip_meson=yes
 714   ;;
 715   --meson=*) meson="$optarg"
 716   ;;
 717   --ninja=*) ninja="$optarg"
 718   ;;
 719   --smbd=*) smbd="$optarg"
 720   ;;
 721   --extra-cflags=*)
 722   ;;
 723   --extra-cxxflags=*)
 724   ;;
 725   --extra-objcflags=*)
 726   ;;
 727   --extra-ldflags=*)
 728   ;;
 729   --cross-cc-*)
 730   ;;
 731   --enable-debug-info) meson_option_add -Ddebug=true
 732   ;;
 733   --disable-debug-info) meson_option_add -Ddebug=false
 734   ;;
 735   --enable-modules)
 736       modules="yes"
 737   ;;
 738   --disable-modules)
 739       modules="no"
 740   ;;
 741   --cpu=*)
 742   ;;
 743   --target-list=*) target_list="$optarg"
 744                    if test "$target_list_exclude"; then
 745                        error_exit "Can't mix --target-list with --target-list-exclude"
 746                    fi
 747   ;;
 748   --target-list-exclude=*) target_list_exclude="$optarg"
 749                    if test "$target_list"; then
 750                        error_exit "Can't mix --target-list-exclude with --target-list"
 751                    fi
 752   ;;
 753   --with-default-devices) meson_option_add -Ddefault_devices=true
 754   ;;
 755   --without-default-devices) meson_option_add -Ddefault_devices=false
 756   ;;
 757   --with-devices-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --with-devices-FOO option"
 758   ;;
 759   --with-devices-*) device_arch=${opt#--with-devices-};
 760                     device_arch=${device_arch%%=*}
 761                     cf=$source_path/configs/devices/$device_arch-softmmu/$optarg.mak
 762                     if test -f "$cf"; then
 763                         device_archs="$device_archs $device_arch"
 764                         eval "devices_${device_arch}=\$optarg"
 765                     else
 766                         error_exit "File $cf does not exist"
 767                     fi
 768   ;;
 769   --without-default-features) # processed above
 770   ;;
 771   --static)
 772     static="yes"
 773     QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
 774   ;;
 775   --bindir=*) bindir="$optarg"
 776   ;;
 777   --with-suffix=*) qemu_suffix="$optarg"
 778   ;;
 779   --host=*|--build=*|\
 780   --disable-dependency-tracking|\
 781   --sbindir=*|--sharedstatedir=*|\
 782   --oldincludedir=*|--datarootdir=*|--infodir=*|\
 783   --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
 784     # These switches are silently ignored, for compatibility with
 785     # autoconf-generated configure scripts. This allows QEMU's
 786     # configure to be used by RPM and similar macros that set
 787     # lots of directory switches by default.
 788   ;;
 789   --enable-debug-tcg) debug_tcg="yes"
 790   ;;
 791   --disable-debug-tcg) debug_tcg="no"
 792   ;;
 793   --enable-debug)
 794       # Enable debugging options that aren't excessively noisy
 795       debug_tcg="yes"
 796       meson_option_parse --enable-debug-mutex ""
 797       meson_option_add -Doptimization=0
 798       fortify_source="no"
 799   ;;
 800   --enable-sanitizers) sanitizers="yes"
 801   ;;
 802   --disable-sanitizers) sanitizers="no"
 803   ;;
 804   --enable-tsan) tsan="yes"
 805   ;;
 806   --disable-tsan) tsan="no"
 807   ;;
 808   --disable-slirp) slirp="disabled"
 809   ;;
 810   --enable-slirp) slirp="enabled"
 811   ;;
 812   --enable-slirp=git) slirp="internal"
 813   ;;
 814   --enable-slirp=*) slirp="$optarg"
 815   ;;
 816   --disable-tcg) tcg="disabled"
 817                  plugins="no"
 818   ;;
 819   --enable-tcg) tcg="enabled"
 820   ;;
 821   --disable-system) softmmu="no"
 822   ;;
 823   --enable-system) softmmu="yes"
 824   ;;
 825   --disable-user)
 826       linux_user="no" ;
 827       bsd_user="no" ;
 828   ;;
 829   --enable-user) ;;
 830   --disable-linux-user) linux_user="no"
 831   ;;
 832   --enable-linux-user) linux_user="yes"
 833   ;;
 834   --disable-bsd-user) bsd_user="no"
 835   ;;
 836   --enable-bsd-user) bsd_user="yes"
 837   ;;
 838   --enable-pie) pie="yes"
 839   ;;
 840   --disable-pie) pie="no"
 841   ;;
 842   --enable-werror) werror="yes"
 843   ;;
 844   --disable-werror) werror="no"
 845   ;;
 846   --enable-stack-protector) stack_protector="yes"
 847   ;;
 848   --disable-stack-protector) stack_protector="no"
 849   ;;
 850   --enable-safe-stack) safe_stack="yes"
 851   ;;
 852   --disable-safe-stack) safe_stack="no"
 853   ;;
 854   --enable-cfi)
 855       cfi="true";
 856       meson_option_add -Db_lto=true
 857   ;;
 858   --disable-cfi) cfi="false"
 859   ;;
 860   --disable-fdt) fdt="disabled"
 861   ;;
 862   --enable-fdt) fdt="enabled"
 863   ;;
 864   --enable-fdt=git) fdt="internal"
 865   ;;
 866   --enable-fdt=*) fdt="$optarg"
 867   ;;
 868   --with-coroutine=*) coroutine="$optarg"
 869   ;;
 870   --disable-zlib-test)
 871   ;;
 872   --disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
 873       echo "$0: $opt is obsolete, virtio-blk data-plane is always on" >&2
 874   ;;
 875   --enable-vhdx|--disable-vhdx)
 876       echo "$0: $opt is obsolete, VHDX driver is always built" >&2
 877   ;;
 878   --enable-uuid|--disable-uuid)
 879       echo "$0: $opt is obsolete, UUID support is always built" >&2
 880   ;;
 881   --with-git=*) git="$optarg"
 882   ;;
 883   --with-git-submodules=*)
 884       git_submodules_action="$optarg"
 885   ;;
 886   --enable-plugins) if test "$mingw32" = "yes"; then
 887                         error_exit "TCG plugins not currently supported on Windows platforms"
 888                     else
 889                         plugins="yes"
 890                     fi
 891   ;;
 892   --disable-plugins) plugins="no"
 893   ;;
 894   --enable-containers) use_containers="yes"
 895   ;;
 896   --disable-containers) use_containers="no"
 897   ;;
 898   --gdb=*) gdb_bin="$optarg"
 899   ;;
 900   # backwards compatibility options
 901   --enable-trace-backend=*) meson_option_parse "--enable-trace-backends=$optarg" "$optarg"
 902   ;;
 903   --disable-blobs) meson_option_parse --disable-install-blobs ""
 904   ;;
 905   --enable-tcmalloc) meson_option_parse --enable-malloc=tcmalloc tcmalloc
 906   ;;
 907   --enable-jemalloc) meson_option_parse --enable-malloc=jemalloc jemalloc
 908   ;;
 909   # everything else has the same name in configure and meson
 910   --*) meson_option_parse "$opt" "$optarg"
 911   ;;
 912   esac
 913 done
 914
 915 # test for any invalid configuration combinations
 916 if test "$plugins" = "yes" -a "$tcg" = "disabled"; then
 917     error_exit "Can't enable plugins on non-TCG builds"
 918 fi
 919
 920 case $git_submodules_action in
 921     update|validate)
 922         if test ! -e "$source_path/.git"; then
 923             echo "ERROR: cannot $git_submodules_action git submodules without .git"
 924             exit 1
 925         fi
 926     ;;
 927     ignore)
 928         if ! test -f "$source_path/ui/keycodemapdb/README"
 929         then
 930             echo
 931             echo "ERROR: missing GIT submodules"
 932             echo
 933             if test -e "$source_path/.git"; then
 934                 echo "--with-git-submodules=ignore specified but submodules were not"
 935                 echo "checked out.  Please initialize and update submodules."
 936             else
 937                 echo "This is not a GIT checkout but module content appears to"
 938                 echo "be missing. Do not use 'git archive' or GitHub download links"
 939                 echo "to acquire QEMU source archives. Non-GIT builds are only"
 940                 echo "supported with source archives linked from:"
 941                 echo
 942                 echo "  https://www.qemu.org/download/#source"
 943                 echo
 944                 echo "Developers working with GIT can use scripts/archive-source.sh"
 945                 echo "if they need to create valid source archives."
 946             fi
 947             echo
 948             exit 1
 949         fi
 950     ;;
 951     *)
 952         echo "ERROR: invalid --with-git-submodules= value '$git_submodules_action'"
 953         exit 1
 954     ;;
 955 esac
 956
 957 if eval test -z "\${cross_cc_$cpu}"; then
 958     eval "cross_cc_${cpu}=\$cc"
 959 fi
 960
 961 default_target_list=""
 962 mak_wilds=""
 963
 964 if [ "$linux_user" != no ]; then
 965     if [ "$targetos" = linux ] && [ -d $source_path/linux-user/include/host/$cpu ]; then
 966         linux_user=yes
 967     elif [ "$linux_user" = yes ]; then
 968         error_exit "linux-user not supported on this architecture"
 969     fi
 970 fi
 971 if [ "$bsd_user" != no ]; then
 972     if [ "$bsd_user" = "" ]; then
 973         test $targetos = freebsd && bsd_user=yes
 974     fi
 975     if [ "$bsd_user" = yes ] && ! [ -d $source_path/bsd-user/$targetos ]; then
 976         error_exit "bsd-user not supported on this host OS"
 977     fi
 978 fi
 979 if [ "$softmmu" = "yes" ]; then
 980     mak_wilds="${mak_wilds} $source_path/configs/targets/*-softmmu.mak"
 981 fi
 982 if [ "$linux_user" = "yes" ]; then
 983     mak_wilds="${mak_wilds} $source_path/configs/targets/*-linux-user.mak"
 984 fi
 985 if [ "$bsd_user" = "yes" ]; then
 986     mak_wilds="${mak_wilds} $source_path/configs/targets/*-bsd-user.mak"
 987 fi
 988
 989 for config in $mak_wilds; do
 990     target="$(basename "$config" .mak)"
 991     if echo "$target_list_exclude" | grep -vq "$target"; then
 992         default_target_list="${default_target_list} $target"
 993     fi
 994 done
 995
 996 if test x"$show_help" = x"yes" ; then
 997 cat << EOF
 998
 999 Usage: configure [options]
1000 Options: [defaults in brackets after descriptions]
1001
1002 Standard options:
1003   --help                   print this message
1004   --prefix=PREFIX          install in PREFIX [$prefix]
1005   --target-list=LIST       set target list (default: build all)
1006 $(echo Available targets: $default_target_list | \
1007   fold -s -w 53 | sed -e 's/^/                           /')
1008   --target-list-exclude=LIST exclude a set of targets from the default target-list
1009
1010 Advanced options (experts only):
1011   --cross-prefix=PREFIX    use PREFIX for compile tools, PREFIX can be blank [$cross_prefix]
1012   --cc=CC                  use C compiler CC [$cc]
1013   --host-cc=CC             use C compiler CC [$host_cc] for code run at
1014                            build time
1015   --cxx=CXX                use C++ compiler CXX [$cxx]
1016   --objcc=OBJCC            use Objective-C compiler OBJCC [$objcc]
1017   --extra-cflags=CFLAGS    append extra C compiler flags CFLAGS
1018   --extra-cxxflags=CXXFLAGS append extra C++ compiler flags CXXFLAGS
1019   --extra-objcflags=OBJCFLAGS append extra Objective C compiler flags OBJCFLAGS
1020   --extra-ldflags=LDFLAGS  append extra linker flags LDFLAGS
1021   --cross-cc-ARCH=CC       use compiler when building ARCH guest test cases
1022   --cross-cc-cflags-ARCH=  use compiler flags when building ARCH guest tests
1023   --make=MAKE              use specified make [$make]
1024   --python=PYTHON          use specified python [$python]
1025   --meson=MESON            use specified meson [$meson]
1026   --ninja=NINJA            use specified ninja [$ninja]
1027   --smbd=SMBD              use specified smbd [$smbd]
1028   --with-git=GIT           use specified git [$git]
1029   --with-git-submodules=update   update git submodules (default if .git dir exists)
1030   --with-git-submodules=validate fail if git submodules are not up to date
1031   --with-git-submodules=ignore   do not update or check git submodules (default if no .git dir)
1032   --static                 enable static build [$static]
1033   --bindir=PATH            install binaries in PATH
1034   --efi-aarch64=PATH       PATH of efi file to use for aarch64 VMs.
1035   --with-suffix=SUFFIX     suffix for QEMU data inside datadir/libdir/sysconfdir/docdir [$qemu_suffix]
1036   --without-default-features default all --enable-* options to "disabled"
1037   --without-default-devices  do not include any device that is not needed to
1038                            start the emulator (only use if you are including
1039                            desired devices in configs/devices/)
1040   --with-devices-ARCH=NAME override default configs/devices
1041   --enable-debug           enable common debug build options
1042   --enable-sanitizers      enable default sanitizers
1043   --enable-tsan            enable thread sanitizer
1044   --disable-werror         disable compilation abort on warning
1045   --disable-stack-protector disable compiler-provided stack protection
1046   --cpu=CPU                Build for host CPU [$cpu]
1047   --with-coroutine=BACKEND coroutine backend. Supported options:
1048                            ucontext, sigaltstack, windows
1049   --enable-plugins
1050                            enable plugins via shared library loading
1051   --disable-containers     don't use containers for cross-building
1052   --gdb=GDB-path           gdb to use for gdbstub tests [$gdb_bin]
1053 EOF
1054   meson_options_help
1055 cat << EOF
1056   system          all system emulation targets
1057   user            supported user emulation targets
1058   linux-user      all linux usermode emulation targets
1059   bsd-user        all BSD usermode emulation targets
1060   pie             Position Independent Executables
1061   modules         modules support (non-Windows)
1062   debug-tcg       TCG debugging (default is disabled)
1063   debug-info      debugging information
1064   safe-stack      SafeStack Stack Smash Protection. Depends on
1065                   clang/llvm >= 3.7 and requires coroutine backend ucontext.
1066
1067 NOTE: The object files are built at the place where configure is launched
1068 EOF
1069 exit 0
1070 fi
1071
1072 # Remove old dependency files to make sure that they get properly regenerated
1073 rm -f */config-devices.mak.d
1074
1075 if test -z "$python"
1076 then
1077     error_exit "Python not found. Use --python=/path/to/python"
1078 fi
1079 if ! has "$make"
1080 then
1081     error_exit "GNU make ($make) not found"
1082 fi
1083
1084 # Note that if the Python conditional here evaluates True we will exit
1085 # with status 1 which is a shell 'false' value.
1086 if ! $python -c 'import sys; sys.exit(sys.version_info < (3,6))'; then
1087   error_exit "Cannot use '$python', Python >= 3.6 is required." \
1088       "Use --python=/path/to/python to specify a supported Python."
1089 fi
1090
1091 # Preserve python version since some functionality is dependent on it
1092 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)
1093
1094 # Suppress writing compiled files
1095 python="$python -B"
1096
1097 if test -z "$meson"; then
1098     if test "$explicit_python" = no && has meson && version_ge "$(meson --version)" 0.59.3; then
1099         meson=meson
1100     elif test $git_submodules_action != 'ignore' ; then
1101         meson=git
1102     elif test -e "${source_path}/meson/meson.py" ; then
1103         meson=internal
1104     else
1105         if test "$explicit_python" = yes; then
1106             error_exit "--python requires using QEMU's embedded Meson distribution, but it was not found."
1107         else
1108             error_exit "Meson not found.  Use --meson=/path/to/meson"
1109         fi
1110     fi
1111 else
1112     # Meson uses its own Python interpreter to invoke other Python scripts,
1113     # but the user wants to use the one they specified with --python.
1114     #
1115     # We do not want to override the distro Python interpreter (and sometimes
1116     # cannot: for example in Homebrew /usr/bin/meson is a bash script), so
1117     # just require --meson=git|internal together with --python.
1118     if test "$explicit_python" = yes; then
1119         case "$meson" in
1120             git | internal) ;;
1121             *) error_exit "--python requires using QEMU's embedded Meson distribution." ;;
1122         esac
1123     fi
1124 fi
1125
1126 if test "$meson" = git; then
1127     git_submodules="${git_submodules} meson"
1128 fi
1129
1130 case "$meson" in
1131     git | internal)
1132         meson="$python ${source_path}/meson/meson.py"
1133         ;;
1134     *) meson=$(command -v "$meson") ;;
1135 esac
1136
1137 # Probe for ninja
1138
1139 if test -z "$ninja"; then
1140     for c in ninja ninja-build samu; do
1141         if has $c; then
1142             ninja=$(command -v "$c")
1143             break
1144         fi
1145     done
1146     if test -z "$ninja"; then
1147       error_exit "Cannot find Ninja"
1148     fi
1149 fi
1150
1151 # Check that the C compiler works. Doing this here before testing
1152 # the host CPU ensures that we had a valid CC to autodetect the
1153 # $cpu var (and we should bail right here if that's not the case).
1154 # It also allows the help message to be printed without a CC.
1155 write_c_skeleton;
1156 if compile_object ; then
1157   : C compiler works ok
1158 else
1159     error_exit "\"$cc\" either does not exist or does not work"
1160 fi
1161 if ! compile_prog ; then
1162     error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
1163 fi
1164
1165 # Consult white-list to determine whether to enable werror
1166 # by default.  Only enable by default for git builds
1167 if test -z "$werror" ; then
1168     if test "$git_submodules_action" != "ignore" && \
1169         { test "$linux" = "yes" || test "$mingw32" = "yes"; }; then
1170         werror="yes"
1171     else
1172         werror="no"
1173     fi
1174 fi
1175
1176 if test "$targetos" = "bogus"; then
1177     # Now that we know that we're not printing the help and that
1178     # the compiler works (so the results of the check_defines we used
1179     # to identify the OS are reliable), if we didn't recognize the
1180     # host OS we should stop now.
1181     error_exit "Unrecognized host OS (uname -s reports '$(uname -s)')"
1182 fi
1183
1184 # Check whether the compiler matches our minimum requirements:
1185 cat > $TMPC << EOF
1186 #if defined(__clang_major__) && defined(__clang_minor__)
1187 # ifdef __apple_build_version__
1188 #  if __clang_major__ < 10 || (__clang_major__ == 10 && __clang_minor__ < 0)
1189 #   error You need at least XCode Clang v10.0 to compile QEMU
1190 #  endif
1191 # else
1192 #  if __clang_major__ < 6 || (__clang_major__ == 6 && __clang_minor__ < 0)
1193 #   error You need at least Clang v6.0 to compile QEMU
1194 #  endif
1195 # endif
1196 #elif defined(__GNUC__) && defined(__GNUC_MINOR__)
1197 # if __GNUC__ < 7 || (__GNUC__ == 7 && __GNUC_MINOR__ < 4)
1198 #  error You need at least GCC v7.4.0 to compile QEMU
1199 # endif
1200 #else
1201 # error You either need GCC or Clang to compiler QEMU
1202 #endif
1203 int main (void) { return 0; }
1204 EOF
1205 if ! compile_prog "" "" ; then
1206     error_exit "You need at least GCC v7.4 or Clang v6.0 (or XCode Clang v10.0)"
1207 fi
1208
1209 # Accumulate -Wfoo and -Wno-bar separately.
1210 # We will list all of the enable flags first, and the disable flags second.
1211 # Note that we do not add -Werror, because that would enable it for all
1212 # configure tests. If a configure test failed due to -Werror this would
1213 # just silently disable some features, so it's too error prone.
1214
1215 warn_flags=
1216 add_to warn_flags -Wold-style-declaration
1217 add_to warn_flags -Wold-style-definition
1218 add_to warn_flags -Wtype-limits
1219 add_to warn_flags -Wformat-security
1220 add_to warn_flags -Wformat-y2k
1221 add_to warn_flags -Winit-self
1222 add_to warn_flags -Wignored-qualifiers
1223 add_to warn_flags -Wempty-body
1224 add_to warn_flags -Wnested-externs
1225 add_to warn_flags -Wendif-labels
1226 add_to warn_flags -Wexpansion-to-defined
1227 add_to warn_flags -Wimplicit-fallthrough=2
1228
1229 nowarn_flags=
1230 add_to nowarn_flags -Wno-initializer-overrides
1231 add_to nowarn_flags -Wno-missing-include-dirs
1232 add_to nowarn_flags -Wno-shift-negative-value
1233 add_to nowarn_flags -Wno-string-plus-int
1234 add_to nowarn_flags -Wno-typedef-redefinition
1235 add_to nowarn_flags -Wno-tautological-type-limit-compare
1236 add_to nowarn_flags -Wno-psabi
1237
1238 gcc_flags="$warn_flags $nowarn_flags"
1239
1240 cc_has_warning_flag() {
1241     write_c_skeleton;
1242
1243     # Use the positive sense of the flag when testing for -Wno-wombat
1244     # support (gcc will happily accept the -Wno- form of unknown
1245     # warning options).
1246     optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1247     compile_prog "-Werror $optflag" ""
1248 }
1249
1250 objcc_has_warning_flag() {
1251     cat > $TMPM <<EOF
1252 int main(void) { return 0; }
1253 EOF
1254
1255     # Use the positive sense of the flag when testing for -Wno-wombat
1256     # support (gcc will happily accept the -Wno- form of unknown
1257     # warning options).
1258     optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1259     do_objc -Werror $optflag \
1260       $OBJCFLAGS $EXTRA_OBJCFLAGS $CONFIGURE_OBJCFLAGS $QEMU_OBJCFLAGS \
1261       -o $TMPE $TMPM $QEMU_LDFLAGS
1262 }
1263
1264 for flag in $gcc_flags; do
1265     if cc_has_warning_flag $flag ; then
1266         QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1267     fi
1268     if objcc_has_warning_flag $flag ; then
1269         QEMU_OBJCFLAGS="$QEMU_OBJCFLAGS $flag"
1270     fi
1271 done
1272
1273 if test "$stack_protector" != "no"; then
1274   cat > $TMPC << EOF
1275 int main(int argc, char *argv[])
1276 {
1277     char arr[64], *p = arr, *c = argv[0];
1278     while (*c) {
1279         *p++ = *c++;
1280     }
1281     return 0;
1282 }
1283 EOF
1284   gcc_flags="-fstack-protector-strong -fstack-protector-all"
1285   sp_on=0
1286   for flag in $gcc_flags; do
1287     # We need to check both a compile and a link, since some compiler
1288     # setups fail only on a .c->.o compile and some only at link time
1289     if compile_object "-Werror $flag" &&
1290        compile_prog "-Werror $flag" ""; then
1291       QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1292       QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
1293       sp_on=1
1294       break
1295     fi
1296   done
1297   if test "$stack_protector" = yes; then
1298     if test $sp_on = 0; then
1299       error_exit "Stack protector not supported"
1300     fi
1301   fi
1302 fi
1303
1304 # Disable -Wmissing-braces on older compilers that warn even for
1305 # the "universal" C zero initializer {0}.
1306 cat > $TMPC << EOF
1307 struct {
1308   int a[2];
1309 } x = {0};
1310 EOF
1311 if compile_object "-Werror" "" ; then
1312   :
1313 else
1314   QEMU_CFLAGS="$QEMU_CFLAGS -Wno-missing-braces"
1315 fi
1316
1317 # Our module code doesn't support Windows
1318 if test "$modules" = "yes" && test "$mingw32" = "yes" ; then
1319   error_exit "Modules are not available for Windows"
1320 fi
1321
1322 # Static linking is not possible with plugins, modules or PIE
1323 if test "$static" = "yes" ; then
1324   if test "$modules" = "yes" ; then
1325     error_exit "static and modules are mutually incompatible"
1326   fi
1327   if test "$plugins" = "yes"; then
1328     error_exit "static and plugins are mutually incompatible"
1329   else
1330     plugins="no"
1331   fi
1332 fi
1333 test "$plugins" = "" && plugins=yes
1334
1335 cat > $TMPC << EOF
1336
1337 #ifdef __linux__
1338 #  define THREAD __thread
1339 #else
1340 #  define THREAD
1341 #endif
1342 static THREAD int tls_var;
1343 int main(void) { return tls_var; }
1344 EOF
1345
1346 # Check we support -fno-pie and -no-pie first; we will need the former for
1347 # building ROMs, and both for everything if --disable-pie is passed.
1348 if compile_prog "-Werror -fno-pie" "-no-pie"; then
1349   CFLAGS_NOPIE="-fno-pie"
1350   LDFLAGS_NOPIE="-no-pie"
1351 fi
1352
1353 if test "$static" = "yes"; then
1354   if test "$pie" != "no" && compile_prog "-Werror -fPIE -DPIE" "-static-pie"; then
1355     CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
1356     QEMU_LDFLAGS="-static-pie $QEMU_LDFLAGS"
1357     pie="yes"
1358   elif test "$pie" = "yes"; then
1359     error_exit "-static-pie not available due to missing toolchain support"
1360   else
1361     QEMU_LDFLAGS="-static $QEMU_LDFLAGS"
1362     pie="no"
1363   fi
1364 elif test "$pie" = "no"; then
1365   CONFIGURE_CFLAGS="$CFLAGS_NOPIE $CONFIGURE_CFLAGS"
1366   CONFIGURE_LDFLAGS="$LDFLAGS_NOPIE $CONFIGURE_LDFLAGS"
1367 elif compile_prog "-Werror -fPIE -DPIE" "-pie"; then
1368   CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
1369   CONFIGURE_LDFLAGS="-pie $CONFIGURE_LDFLAGS"
1370   pie="yes"
1371 elif test "$pie" = "yes"; then
1372   error_exit "PIE not available due to missing toolchain support"
1373 else
1374   echo "Disabling PIE due to missing toolchain support"
1375   pie="no"
1376 fi
1377
1378 # Detect support for PT_GNU_RELRO + DT_BIND_NOW.
1379 # The combination is known as "full relro", because .got.plt is read-only too.
1380 if compile_prog "" "-Wl,-z,relro -Wl,-z,now" ; then
1381   QEMU_LDFLAGS="-Wl,-z,relro -Wl,-z,now $QEMU_LDFLAGS"
1382 fi
1383
1384 ##########################################
1385 # __sync_fetch_and_and requires at least -march=i486. Many toolchains
1386 # use i686 as default anyway, but for those that don't, an explicit
1387 # specification is necessary
1388
1389 if test "$cpu" = "i386"; then
1390   cat > $TMPC << EOF
1391 static int sfaa(int *ptr)
1392 {
1393   return __sync_fetch_and_and(ptr, 0);
1394 }
1395
1396 int main(void)
1397 {
1398   int val = 42;
1399   val = __sync_val_compare_and_swap(&val, 0, 1);
1400   sfaa(&val);
1401   return val;
1402 }
1403 EOF
1404   if ! compile_prog "" "" ; then
1405     QEMU_CFLAGS="-march=i486 $QEMU_CFLAGS"
1406   fi
1407 fi
1408
1409 if test "$tcg" = "enabled"; then
1410     git_submodules="$git_submodules tests/fp/berkeley-testfloat-3"
1411     git_submodules="$git_submodules tests/fp/berkeley-softfloat-3"
1412 fi
1413
1414 if test -z "${target_list+xxx}" ; then
1415     default_targets=yes
1416     for target in $default_target_list; do
1417         target_list="$target_list $target"
1418     done
1419     target_list="${target_list# }"
1420 else
1421     default_targets=no
1422     target_list=$(echo "$target_list" | sed -e 's/,/ /g')
1423     for target in $target_list; do
1424         # Check that we recognised the target name; this allows a more
1425         # friendly error message than if we let it fall through.
1426         case " $default_target_list " in
1427             *" $target "*)
1428                 ;;
1429             *)
1430                 error_exit "Unknown target name '$target'"
1431                 ;;
1432         esac
1433     done
1434 fi
1435
1436 # see if system emulation was really requested
1437 case " $target_list " in
1438   *"-softmmu "*) softmmu=yes
1439   ;;
1440   *) softmmu=no
1441   ;;
1442 esac
1443
1444 feature_not_found() {
1445   feature=$1
1446   remedy=$2
1447
1448   error_exit "User requested feature $feature" \
1449       "configure was not able to find it." \
1450       "$remedy"
1451 }
1452
1453 # ---
1454 # big/little endian test
1455 cat > $TMPC << EOF
1456 #include <stdio.h>
1457 short big_endian[] = { 0x4269, 0x4765, 0x4e64, 0x4961, 0x4e00, 0, };
1458 short little_endian[] = { 0x694c, 0x7454, 0x654c, 0x6e45, 0x6944, 0x6e41, 0, };
1459 int main(int argc, char *argv[])
1460 {
1461     return printf("%s %s\n", (char *)big_endian, (char *)little_endian);
1462 }
1463 EOF
1464
1465 if compile_prog ; then
1466     if strings -a $TMPE | grep -q BiGeNdIaN ; then
1467         bigendian="yes"
1468     elif strings -a $TMPE | grep -q LiTtLeEnDiAn ; then
1469         bigendian="no"
1470     else
1471         echo big/little test failed
1472         exit 1
1473     fi
1474 else
1475     echo big/little test failed
1476     exit 1
1477 fi
1478
1479 ##########################################
1480 # pkg-config probe
1481
1482 if ! has "$pkg_config_exe"; then
1483   error_exit "pkg-config binary '$pkg_config_exe' not found"
1484 fi
1485
1486 ##########################################
1487 # glib support probe
1488
1489 # When bumping glib_req_ver, please check also whether we should increase
1490 # the _WIN32_WINNT setting in osdep.h according to the value from glib
1491 glib_req_ver=2.56
1492 glib_modules=gthread-2.0
1493 if test "$modules" = yes; then
1494     glib_modules="$glib_modules gmodule-export-2.0"
1495 elif test "$plugins" = "yes"; then
1496     glib_modules="$glib_modules gmodule-no-export-2.0"
1497 fi
1498
1499 for i in $glib_modules; do
1500     if $pkg_config --atleast-version=$glib_req_ver $i; then
1501         glib_cflags=$($pkg_config --cflags $i)
1502         glib_libs=$($pkg_config --libs $i)
1503     else
1504         error_exit "glib-$glib_req_ver $i is required to compile QEMU"
1505     fi
1506 done
1507
1508 glib_bindir="$($pkg_config --variable=bindir glib-2.0)"
1509 if test -z "$glib_bindir" ; then
1510         glib_bindir="$($pkg_config --variable=prefix glib-2.0)"/bin
1511 fi
1512
1513 # This workaround is required due to a bug in pkg-config file for glib as it
1514 # doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
1515
1516 if test "$static" = yes && test "$mingw32" = yes; then
1517     glib_cflags="-DGLIB_STATIC_COMPILATION $glib_cflags"
1518 fi
1519
1520 # Sanity check that the current size_t matches the
1521 # size that glib thinks it should be. This catches
1522 # problems on multi-arch where people try to build
1523 # 32-bit QEMU while pointing at 64-bit glib headers
1524 cat > $TMPC <<EOF
1525 #include <glib.h>
1526 #include <unistd.h>
1527
1528 #define QEMU_BUILD_BUG_ON(x) \
1529   typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
1530
1531 int main(void) {
1532    QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
1533    return 0;
1534 }
1535 EOF
1536
1537 if ! compile_prog "$glib_cflags" "$glib_libs" ; then
1538     error_exit "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T."\
1539                "You probably need to set PKG_CONFIG_LIBDIR"\
1540                "to point to the right pkg-config files for your"\
1541                "build target"
1542 fi
1543
1544 # Silence clang warnings triggered by glib < 2.57.2
1545 cat > $TMPC << EOF
1546 #include <glib.h>
1547 typedef struct Foo {
1548     int i;
1549 } Foo;
1550 static void foo_free(Foo *f)
1551 {
1552     g_free(f);
1553 }
1554 G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free)
1555 int main(void) { return 0; }
1556 EOF
1557 if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
1558     if cc_has_warning_flag "-Wno-unused-function"; then
1559         glib_cflags="$glib_cflags -Wno-unused-function"
1560         CONFIGURE_CFLAGS="$CONFIGURE_CFLAGS -Wno-unused-function"
1561     fi
1562 fi
1563
1564 ##########################################
1565 # fdt probe
1566
1567 case "$fdt" in
1568   auto | enabled | internal)
1569     # Simpler to always update submodule, even if not needed.
1570     git_submodules="${git_submodules} dtc"
1571     ;;
1572 esac
1573
1574 ##########################################
1575 # check and set a backend for coroutine
1576
1577 # We prefer ucontext, but it's not always possible. The fallback
1578 # is sigcontext. On Windows the only valid backend is the Windows
1579 # specific one.
1580
1581 ucontext_works=no
1582 if test "$darwin" != "yes"; then
1583   cat > $TMPC << EOF
1584 #include <ucontext.h>
1585 #ifdef __stub_makecontext
1586 #error Ignoring glibc stub makecontext which will always fail
1587 #endif
1588 int main(void) { makecontext(0, 0, 0); return 0; }
1589 EOF
1590   if compile_prog "" "" ; then
1591     ucontext_works=yes
1592   fi
1593 fi
1594
1595 if test "$coroutine" = ""; then
1596   if test "$mingw32" = "yes"; then
1597     coroutine=win32
1598   elif test "$ucontext_works" = "yes"; then
1599     coroutine=ucontext
1600   else
1601     coroutine=sigaltstack
1602   fi
1603 else
1604   case $coroutine in
1605   windows)
1606     if test "$mingw32" != "yes"; then
1607       error_exit "'windows' coroutine backend only valid for Windows"
1608     fi
1609     # Unfortunately the user visible backend name doesn't match the
1610     # coroutine-*.c filename for this case, so we have to adjust it here.
1611     coroutine=win32
1612     ;;
1613   ucontext)
1614     if test "$ucontext_works" != "yes"; then
1615       feature_not_found "ucontext"
1616     fi
1617     ;;
1618   sigaltstack)
1619     if test "$mingw32" = "yes"; then
1620       error_exit "only the 'windows' coroutine backend is valid for Windows"
1621     fi
1622     ;;
1623   *)
1624     error_exit "unknown coroutine backend $coroutine"
1625     ;;
1626   esac
1627 fi
1628
1629 ##################################################
1630 # SafeStack
1631
1632
1633 if test "$safe_stack" = "yes"; then
1634 cat > $TMPC << EOF
1635 int main(int argc, char *argv[])
1636 {
1637 #if ! __has_feature(safe_stack)
1638 #error SafeStack Disabled
1639 #endif
1640     return 0;
1641 }
1642 EOF
1643   flag="-fsanitize=safe-stack"
1644   # Check that safe-stack is supported and enabled.
1645   if compile_prog "-Werror $flag" "$flag"; then
1646     # Flag needed both at compilation and at linking
1647     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1648     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
1649   else
1650     error_exit "SafeStack not supported by your compiler"
1651   fi
1652   if test "$coroutine" != "ucontext"; then
1653     error_exit "SafeStack is only supported by the coroutine backend ucontext"
1654   fi
1655 else
1656 cat > $TMPC << EOF
1657 int main(int argc, char *argv[])
1658 {
1659 #if defined(__has_feature)
1660 #if __has_feature(safe_stack)
1661 #error SafeStack Enabled
1662 #endif
1663 #endif
1664     return 0;
1665 }
1666 EOF
1667 if test "$safe_stack" = "no"; then
1668   # Make sure that safe-stack is disabled
1669   if ! compile_prog "-Werror" ""; then
1670     # SafeStack was already enabled, try to explicitly remove the feature
1671     flag="-fno-sanitize=safe-stack"
1672     if ! compile_prog "-Werror $flag" "$flag"; then
1673       error_exit "Configure cannot disable SafeStack"
1674     fi
1675     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1676     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
1677   fi
1678 else # "$safe_stack" = ""
1679   # Set safe_stack to yes or no based on pre-existing flags
1680   if compile_prog "-Werror" ""; then
1681     safe_stack="no"
1682   else
1683     safe_stack="yes"
1684     if test "$coroutine" != "ucontext"; then
1685       error_exit "SafeStack is only supported by the coroutine backend ucontext"
1686     fi
1687   fi
1688 fi
1689 fi
1690
1691 ########################################
1692 # check if ccache is interfering with
1693 # semantic analysis of macros
1694
1695 unset CCACHE_CPP2
1696 ccache_cpp2=no
1697 cat > $TMPC << EOF
1698 static const int Z = 1;
1699 #define fn() ({ Z; })
1700 #define TAUT(X) ((X) == Z)
1701 #define PAREN(X, Y) (X == Y)
1702 #define ID(X) (X)
1703 int main(int argc, char *argv[])
1704 {
1705     int x = 0, y = 0;
1706     x = ID(x);
1707     x = fn();
1708     fn();
1709     if (PAREN(x, y)) return 0;
1710     if (TAUT(Z)) return 0;
1711     return 0;
1712 }
1713 EOF
1714
1715 if ! compile_object "-Werror"; then
1716     ccache_cpp2=yes
1717 fi
1718
1719 #################################################
1720 # clang does not support glibc + FORTIFY_SOURCE.
1721
1722 if test "$fortify_source" != "no"; then
1723   if echo | $cc -dM -E - | grep __clang__ > /dev/null 2>&1 ; then
1724     fortify_source="no";
1725   elif test -n "$cxx" && has $cxx &&
1726        echo | $cxx -dM -E - | grep __clang__ >/dev/null 2>&1 ; then
1727     fortify_source="no";
1728   else
1729     fortify_source="yes"
1730   fi
1731 fi
1732
1733 ##########################################
1734 # checks for sanitizers
1735
1736 have_asan=no
1737 have_ubsan=no
1738 have_asan_iface_h=no
1739 have_asan_iface_fiber=no
1740
1741 if test "$sanitizers" = "yes" ; then
1742   write_c_skeleton
1743   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" ""; then
1744       have_asan=yes
1745   fi
1746
1747   # we could use a simple skeleton for flags checks, but this also
1748   # detect the static linking issue of ubsan, see also:
1749   # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84285
1750   cat > $TMPC << EOF
1751 #include <stdlib.h>
1752 int main(void) {
1753     void *tmp = malloc(10);
1754     if (tmp != NULL) {
1755         return *(int *)(tmp + 2);
1756     }
1757     return 1;
1758 }
1759 EOF
1760   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=undefined" ""; then
1761       have_ubsan=yes
1762   fi
1763
1764   if check_include "sanitizer/asan_interface.h" ; then
1765       have_asan_iface_h=yes
1766   fi
1767
1768   cat > $TMPC << EOF
1769 #include <sanitizer/asan_interface.h>
1770 int main(void) {
1771   __sanitizer_start_switch_fiber(0, 0, 0);
1772   return 0;
1773 }
1774 EOF
1775   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" "" ; then
1776       have_asan_iface_fiber=yes
1777   fi
1778 fi
1779
1780 # Thread sanitizer is, for now, much noisier than the other sanitizers;
1781 # keep it separate until that is not the case.
1782 if test "$tsan" = "yes" && test "$sanitizers" = "yes"; then
1783   error_exit "TSAN is not supported with other sanitiziers."
1784 fi
1785 have_tsan=no
1786 have_tsan_iface_fiber=no
1787 if test "$tsan" = "yes" ; then
1788   write_c_skeleton
1789   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
1790       have_tsan=yes
1791   fi
1792   cat > $TMPC << EOF
1793 #include <sanitizer/tsan_interface.h>
1794 int main(void) {
1795   __tsan_create_fiber(0);
1796   return 0;
1797 }
1798 EOF
1799   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
1800       have_tsan_iface_fiber=yes
1801   fi
1802 fi
1803
1804 ##########################################
1805 # check for slirp
1806
1807 case "$slirp" in
1808   auto | enabled | internal)
1809     # Simpler to always update submodule, even if not needed.
1810     git_submodules="${git_submodules} slirp"
1811     ;;
1812 esac
1813
1814 ##########################################
1815 # functions to probe cross compilers
1816
1817 container="no"
1818 if test $use_containers = "yes"; then
1819     if has "docker" || has "podman"; then
1820         container=$($python $source_path/tests/docker/docker.py probe)
1821     fi
1822 fi
1823
1824 # cross compilers defaults, can be overridden with --cross-cc-ARCH
1825 : ${cross_cc_aarch64="aarch64-linux-gnu-gcc"}
1826 : ${cross_cc_aarch64_be="$cross_cc_aarch64"}
1827 : ${cross_cc_cflags_aarch64_be="-mbig-endian"}
1828 : ${cross_cc_alpha="alpha-linux-gnu-gcc"}
1829 : ${cross_cc_arm="arm-linux-gnueabihf-gcc"}
1830 : ${cross_cc_armeb="$cross_cc_arm"}
1831 : ${cross_cc_cflags_armeb="-mbig-endian"}
1832 : ${cross_cc_hexagon="hexagon-unknown-linux-musl-clang"}
1833 : ${cross_cc_cflags_hexagon="-mv67 -O2 -static"}
1834 : ${cross_cc_hppa="hppa-linux-gnu-gcc"}
1835 : ${cross_cc_i386="i686-linux-gnu-gcc"}
1836 : ${cross_cc_cflags_i386="-m32"}
1837 : ${cross_cc_m68k="m68k-linux-gnu-gcc"}
1838 : ${cross_cc_microblaze="microblaze-linux-musl-gcc"}
1839 : ${cross_cc_mips64el="mips64el-linux-gnuabi64-gcc"}
1840 : ${cross_cc_mips64="mips64-linux-gnuabi64-gcc"}
1841 : ${cross_cc_mipsel="mipsel-linux-gnu-gcc"}
1842 : ${cross_cc_mips="mips-linux-gnu-gcc"}
1843 : ${cross_cc_nios2="nios2-linux-gnu-gcc"}
1844 : ${cross_cc_ppc="powerpc-linux-gnu-gcc"}
1845 : ${cross_cc_cflags_ppc="-m32"}
1846 : ${cross_cc_ppc64="powerpc64-linux-gnu-gcc"}
1847 : ${cross_cc_cflags_ppc64="-m64 -mbig-endian"}
1848 : ${cross_cc_ppc64le="$cross_cc_ppc64"}
1849 : ${cross_cc_cflags_ppc64le="-m64 -mlittle-endian"}
1850 : ${cross_cc_riscv64="riscv64-linux-gnu-gcc"}
1851 : ${cross_cc_s390x="s390x-linux-gnu-gcc"}
1852 : ${cross_cc_sh4="sh4-linux-gnu-gcc"}
1853 : ${cross_cc_sparc64="sparc64-linux-gnu-gcc"}
1854 : ${cross_cc_cflags_sparc64="-m64 -mcpu=ultrasparc"}
1855 : ${cross_cc_sparc="$cross_cc_sparc64"}
1856 : ${cross_cc_cflags_sparc="-m32 -mcpu=supersparc"}
1857 : ${cross_cc_x86_64="x86_64-linux-gnu-gcc"}
1858 : ${cross_cc_cflags_x86_64="-m64"}
1859
1860 # tricore is special as it doesn't have a compiler
1861 : ${cross_as_tricore="tricore-as"}
1862 : ${cross_ld_tricore="tricore-ld"}
1863
1864 probe_target_compiler() {
1865   # reset all output variables
1866   container_image=
1867   container_hosts=
1868   container_cross_cc=
1869   container_cross_as=
1870   container_cross_ld=
1871   target_cc=
1872   target_as=
1873   target_ld=
1874
1875   case $1 in
1876     aarch64) container_hosts="x86_64 aarch64" ;;
1877     alpha) container_hosts=x86_64 ;;
1878     arm) container_hosts="x86_64 aarch64" ;;
1879     cris) container_hosts=x86_64 ;;
1880     hexagon) container_hosts=x86_64 ;;
1881     hppa) container_hosts=x86_64 ;;
1882     i386) container_hosts=x86_64 ;;
1883     m68k) container_hosts=x86_64 ;;
1884     microblaze) container_hosts=x86_64 ;;
1885     mips64el) container_hosts=x86_64 ;;
1886     mips64) container_hosts=x86_64 ;;
1887     mipsel) container_hosts=x86_64 ;;
1888     mips) container_hosts=x86_64 ;;
1889     nios2) container_hosts=x86_64 ;;
1890     ppc) container_hosts=x86_64 ;;
1891     ppc64|ppc64le) container_hosts=x86_64 ;;
1892     riscv64) container_hosts=x86_64 ;;
1893     s390x) container_hosts=x86_64 ;;
1894     sh4) container_hosts=x86_64 ;;
1895     sparc64) container_hosts=x86_64 ;;
1896     tricore) container_hosts=x86_64 ;;
1897     x86_64) container_hosts="aarch64 ppc64el x86_64" ;;
1898     xtensa*) container_hosts=x86_64 ;;
1899   esac
1900
1901   for host in $container_hosts; do
1902     test "$container" != no || continue
1903     test "$host" = "$cpu" || continue
1904     case $1 in
1905       aarch64)
1906         # We don't have any bigendian build tools so we only use this for AArch64
1907         container_image=debian-arm64-cross
1908         container_cross_cc=aarch64-linux-gnu-gcc-10
1909         ;;
1910       alpha)
1911         container_image=debian-alpha-cross
1912         container_cross_cc=alpha-linux-gnu-gcc
1913         ;;
1914       arm)
1915         # We don't have any bigendian build tools so we only use this for ARM
1916         container_image=debian-armhf-cross
1917         container_cross_cc=arm-linux-gnueabihf-gcc
1918         ;;
1919       cris)
1920         container_image=fedora-cris-cross
1921         container_cross_cc=cris-linux-gnu-gcc
1922         ;;
1923       hexagon)
1924         container_image=debian-hexagon-cross
1925         container_cross_cc=hexagon-unknown-linux-musl-clang
1926         ;;
1927       hppa)
1928         container_image=debian-hppa-cross
1929         container_cross_cc=hppa-linux-gnu-gcc
1930         ;;
1931       i386)
1932         container_image=fedora-i386-cross
1933         container_cross_cc=gcc
1934         ;;
1935       m68k)
1936         container_image=debian-m68k-cross
1937         container_cross_cc=m68k-linux-gnu-gcc
1938         ;;
1939       microblaze)
1940         container_image=debian-microblaze-cross
1941         container_cross_cc=microblaze-linux-musl-gcc
1942         ;;
1943       mips64el)
1944         container_image=debian-mips64el-cross
1945         container_cross_cc=mips64el-linux-gnuabi64-gcc
1946         ;;
1947       mips64)
1948         container_image=debian-mips64-cross
1949         container_cross_cc=mips64-linux-gnuabi64-gcc
1950         ;;
1951       mipsel)
1952         container_image=debian-mipsel-cross
1953         container_cross_cc=mipsel-linux-gnu-gcc
1954         ;;
1955       mips)
1956         container_image=debian-mips-cross
1957         container_cross_cc=mips-linux-gnu-gcc
1958         ;;
1959       nios2)
1960         container_image=debian-nios2-cross
1961         container_cross_cc=nios2-linux-gnu-gcc
1962         ;;
1963       ppc)
1964         container_image=debian-powerpc-test-cross
1965         container_cross_cc=powerpc-linux-gnu-gcc-10
1966         ;;
1967       ppc64|ppc64le)
1968         container_image=debian-powerpc-test-cross
1969         container_cross_cc=powerpc${1#ppc}-linux-gnu-gcc-10
1970         ;;
1971       riscv64)
1972         container_image=debian-riscv64-test-cross
1973         container_cross_cc=riscv64-linux-gnu-gcc
1974         ;;
1975       s390x)
1976         container_image=debian-s390x-cross
1977         container_cross_cc=s390x-linux-gnu-gcc
1978         ;;
1979       sh4)
1980         container_image=debian-sh4-cross
1981         container_cross_cc=sh4-linux-gnu-gcc
1982         ;;
1983       sparc64)
1984         container_image=debian-sparc64-cross
1985         container_cross_cc=sparc64-linux-gnu-gcc
1986         ;;
1987       tricore)
1988         container_image=debian-tricore-cross
1989         container_cross_as=tricore-as
1990         container_cross_ld=tricore-ld
1991         ;;
1992       x86_64)
1993         container_image=debian-amd64-cross
1994         container_cross_cc=x86_64-linux-gnu-gcc
1995         ;;
1996       xtensa*)
1997         # FIXME: xtensa-linux-user?
1998         container_hosts=x86_64
1999         container_image=debian-xtensa-cross
2000
2001         # default to the dc232b cpu
2002         container_cross_cc=/opt/2020.07/xtensa-dc232b-elf/bin/xtensa-dc232b-elf-gcc
2003         ;;
2004     esac
2005   done
2006
2007   eval "target_cflags=\${cross_cc_cflags_$1}"
2008   if eval test -n "\"\${cross_cc_$1}\""; then
2009     if eval has "\"\${cross_cc_$1}\""; then
2010       eval "target_cc=\"\${cross_cc_$1}\""
2011       case $1 in
2012         i386|x86_64)
2013           if $target_cc --version | grep -qi "clang"; then
2014             unset target_cc
2015           fi
2016           ;;
2017       esac
2018     fi
2019   fi
2020   if eval test -n "\"\${cross_as_$1}\""; then
2021     if eval has "\"\${cross_as_$1}\""; then
2022       eval "target_as=\"\${cross_as_$1}\""
2023     fi
2024   fi
2025   if eval test -n "\"\${cross_ld_$1}\""; then
2026     if eval has "\"\${cross_ld_$1}\""; then
2027       eval "target_ld=\"\${cross_ld_$1}\""
2028     fi
2029   fi
2030 }
2031
2032 write_target_makefile() {
2033   if test -n "$target_cc"; then
2034     echo "CC=$target_cc"
2035   fi
2036   if test -n "$target_as"; then
2037     echo "AS=$target_as"
2038   fi
2039   if test -n "$target_ld"; then
2040     echo "LD=$target_ld"
2041   fi
2042 }
2043
2044 write_container_target_makefile() {
2045   if test -n "$container_cross_cc"; then
2046     echo "CC=\$(DOCKER_SCRIPT) cc --cc $container_cross_cc -i qemu/$container_image -s $source_path --"
2047   fi
2048   if test -n "$container_cross_as"; then
2049     echo "AS=\$(DOCKER_SCRIPT) cc --cc $container_cross_as -i qemu/$container_image -s $source_path --"
2050   fi
2051   if test -n "$container_cross_ld"; then
2052     echo "LD=\$(DOCKER_SCRIPT) cc --cc $container_cross_ld -i qemu/$container_image -s $source_path --"
2053   fi
2054 }
2055
2056
2057
2058 ##########################################
2059 # End of CC checks
2060 # After here, no more $cc or $ld runs
2061
2062 write_c_skeleton
2063
2064 if test "$fortify_source" = "yes" ; then
2065   QEMU_CFLAGS="-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $QEMU_CFLAGS"
2066 fi
2067
2068 case "$ARCH" in
2069 alpha)
2070   # Ensure there's only a single GP
2071   QEMU_CFLAGS="-msmall-data $QEMU_CFLAGS"
2072 ;;
2073 esac
2074
2075 if test "$have_asan" = "yes"; then
2076   QEMU_CFLAGS="-fsanitize=address $QEMU_CFLAGS"
2077   QEMU_LDFLAGS="-fsanitize=address $QEMU_LDFLAGS"
2078   if test "$have_asan_iface_h" = "no" ; then
2079       echo "ASAN build enabled, but ASAN header missing." \
2080            "Without code annotation, the report may be inferior."
2081   elif test "$have_asan_iface_fiber" = "no" ; then
2082       echo "ASAN build enabled, but ASAN header is too old." \
2083            "Without code annotation, the report may be inferior."
2084   fi
2085 fi
2086 if test "$have_tsan" = "yes" ; then
2087   if test "$have_tsan_iface_fiber" = "yes" ; then
2088     QEMU_CFLAGS="-fsanitize=thread $QEMU_CFLAGS"
2089     QEMU_LDFLAGS="-fsanitize=thread $QEMU_LDFLAGS"
2090   else
2091     error_exit "Cannot enable TSAN due to missing fiber annotation interface."
2092   fi
2093 elif test "$tsan" = "yes" ; then
2094   error_exit "Cannot enable TSAN due to missing sanitize thread interface."
2095 fi
2096 if test "$have_ubsan" = "yes"; then
2097   QEMU_CFLAGS="-fsanitize=undefined $QEMU_CFLAGS"
2098   QEMU_LDFLAGS="-fsanitize=undefined $QEMU_LDFLAGS"
2099 fi
2100
2101 ##########################################
2102
2103 # Exclude --warn-common with TSan to suppress warnings from the TSan libraries.
2104 if test "$solaris" = "no" && test "$tsan" = "no"; then
2105     if $ld --version 2>/dev/null | grep "GNU ld" >/dev/null 2>/dev/null ; then
2106         QEMU_LDFLAGS="-Wl,--warn-common $QEMU_LDFLAGS"
2107     fi
2108 fi
2109
2110 # Guest agent Windows MSI package
2111
2112 if test "$QEMU_GA_MANUFACTURER" = ""; then
2113   QEMU_GA_MANUFACTURER=QEMU
2114 fi
2115 if test "$QEMU_GA_DISTRO" = ""; then
2116   QEMU_GA_DISTRO=Linux
2117 fi
2118 if test "$QEMU_GA_VERSION" = ""; then
2119     QEMU_GA_VERSION=$(cat $source_path/VERSION)
2120 fi
2121
2122 # Mac OS X ships with a broken assembler
2123 roms=
2124 if { test "$cpu" = "i386" || test "$cpu" = "x86_64"; } && \
2125         test "$targetos" != "darwin" && test "$targetos" != "sunos" && \
2126         test "$targetos" != "haiku" && test "$softmmu" = yes ; then
2127     # Different host OS linkers have different ideas about the name of the ELF
2128     # emulation. Linux and OpenBSD/amd64 use 'elf_i386'; FreeBSD uses the _fbsd
2129     # variant; OpenBSD/i386 uses the _obsd variant; and Windows uses i386pe.
2130     for emu in elf_i386 elf_i386_fbsd elf_i386_obsd i386pe; do
2131         if "$ld" -verbose 2>&1 | grep -q "^[[:space:]]*$emu[[:space:]]*$"; then
2132             ld_i386_emulation="$emu"
2133             roms="optionrom"
2134             break
2135         fi
2136     done
2137 fi
2138
2139 # Only build s390-ccw bios if we're on s390x and the compiler has -march=z900
2140 # or -march=z10 (which is the lowest architecture level that Clang supports)
2141 if test "$cpu" = "s390x" ; then
2142   write_c_skeleton
2143   compile_prog "-march=z900" ""
2144   has_z900=$?
2145   if [ $has_z900 = 0 ] || compile_object "-march=z10 -msoft-float -Werror"; then
2146     if [ $has_z900 != 0 ]; then
2147       echo "WARNING: Your compiler does not support the z900!"
2148       echo "         The s390-ccw bios will only work with guest CPUs >= z10."
2149     fi
2150     roms="$roms s390-ccw"
2151     # SLOF is required for building the s390-ccw firmware on s390x,
2152     # since it is using the libnet code from SLOF for network booting.
2153     git_submodules="${git_submodules} roms/SLOF"
2154   fi
2155 fi
2156
2157 # Check that the C++ compiler exists and works with the C compiler.
2158 # All the QEMU_CXXFLAGS are based on QEMU_CFLAGS. Keep this at the end to don't miss any other that could be added.
2159 if has $cxx; then
2160     cat > $TMPC <<EOF
2161 int c_function(void);
2162 int main(void) { return c_function(); }
2163 EOF
2164
2165     compile_object
2166
2167     cat > $TMPCXX <<EOF
2168 extern "C" {
2169    int c_function(void);
2170 }
2171 int c_function(void) { return 42; }
2172 EOF
2173
2174     update_cxxflags
2175
2176     if do_cxx $CXXFLAGS $EXTRA_CXXFLAGS $CONFIGURE_CXXFLAGS $QEMU_CXXFLAGS -o $TMPE $TMPCXX $TMPO $QEMU_LDFLAGS; then
2177         # C++ compiler $cxx works ok with C compiler $cc
2178         :
2179     else
2180         echo "C++ compiler $cxx does not work with C compiler $cc"
2181         echo "Disabling C++ specific optional code"
2182         cxx=
2183     fi
2184 else
2185     echo "No C++ compiler available; disabling C++ specific optional code"
2186     cxx=
2187 fi
2188
2189 if !(GIT="$git" "$source_path/scripts/git-submodule.sh" "$git_submodules_action" "$git_submodules"); then
2190     exit 1
2191 fi
2192
2193 config_host_mak="config-host.mak"
2194
2195 echo "# Automatically generated by configure - do not modify" > $config_host_mak
2196 echo >> $config_host_mak
2197
2198 echo all: >> $config_host_mak
2199 echo "GIT=$git" >> $config_host_mak
2200 echo "GIT_SUBMODULES=$git_submodules" >> $config_host_mak
2201 echo "GIT_SUBMODULES_ACTION=$git_submodules_action" >> $config_host_mak
2202
2203 if test "$debug_tcg" = "yes" ; then
2204   echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
2205 fi
2206 if test "$mingw32" = "yes" ; then
2207   echo "CONFIG_WIN32=y" >> $config_host_mak
2208   echo "QEMU_GA_MANUFACTURER=${QEMU_GA_MANUFACTURER}" >> $config_host_mak
2209   echo "QEMU_GA_DISTRO=${QEMU_GA_DISTRO}" >> $config_host_mak
2210   echo "QEMU_GA_VERSION=${QEMU_GA_VERSION}" >> $config_host_mak
2211 else
2212   echo "CONFIG_POSIX=y" >> $config_host_mak
2213 fi
2214
2215 if test "$linux" = "yes" ; then
2216   echo "CONFIG_LINUX=y" >> $config_host_mak
2217 fi
2218
2219 if test "$darwin" = "yes" ; then
2220   echo "CONFIG_DARWIN=y" >> $config_host_mak
2221 fi
2222
2223 if test "$solaris" = "yes" ; then
2224   echo "CONFIG_SOLARIS=y" >> $config_host_mak
2225 fi
2226 if test "$static" = "yes" ; then
2227   echo "CONFIG_STATIC=y" >> $config_host_mak
2228 fi
2229 echo "SRC_PATH=$source_path" >> $config_host_mak
2230 echo "TARGET_DIRS=$target_list" >> $config_host_mak
2231 if test "$modules" = "yes"; then
2232   echo "CONFIG_MODULES=y" >> $config_host_mak
2233 fi
2234
2235 # XXX: suppress that
2236 if [ "$bsd" = "yes" ] ; then
2237   echo "CONFIG_BSD=y" >> $config_host_mak
2238 fi
2239
2240 echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
2241
2242 if test "$have_asan_iface_fiber" = "yes" ; then
2243     echo "CONFIG_ASAN_IFACE_FIBER=y" >> $config_host_mak
2244 fi
2245
2246 if test "$have_tsan" = "yes" && test "$have_tsan_iface_fiber" = "yes" ; then
2247     echo "CONFIG_TSAN=y" >> $config_host_mak
2248 fi
2249
2250 if test "$plugins" = "yes" ; then
2251     echo "CONFIG_PLUGIN=y" >> $config_host_mak
2252 fi
2253
2254 if test -n "$gdb_bin"; then
2255     gdb_version=$($gdb_bin --version | head -n 1)
2256     if version_ge ${gdb_version##* } 9.1; then
2257         echo "HAVE_GDB_BIN=$gdb_bin" >> $config_host_mak
2258     fi
2259 fi
2260
2261 echo "ROMS=$roms" >> $config_host_mak
2262 echo "MAKE=$make" >> $config_host_mak
2263 echo "PYTHON=$python" >> $config_host_mak
2264 echo "GENISOIMAGE=$genisoimage" >> $config_host_mak
2265 echo "MESON=$meson" >> $config_host_mak
2266 echo "NINJA=$ninja" >> $config_host_mak
2267 echo "CC=$cc" >> $config_host_mak
2268 echo "AR=$ar" >> $config_host_mak
2269 echo "AS=$as" >> $config_host_mak
2270 echo "CCAS=$ccas" >> $config_host_mak
2271 echo "OBJCOPY=$objcopy" >> $config_host_mak
2272 echo "LD=$ld" >> $config_host_mak
2273 echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak
2274 echo "QEMU_CXXFLAGS=$QEMU_CXXFLAGS" >> $config_host_mak
2275 echo "QEMU_OBJCFLAGS=$QEMU_OBJCFLAGS" >> $config_host_mak
2276 echo "GLIB_CFLAGS=$glib_cflags" >> $config_host_mak
2277 echo "GLIB_LIBS=$glib_libs" >> $config_host_mak
2278 echo "GLIB_BINDIR=$glib_bindir" >> $config_host_mak
2279 echo "GLIB_VERSION=$(pkg-config --modversion glib-2.0)" >> $config_host_mak
2280 echo "QEMU_LDFLAGS=$QEMU_LDFLAGS" >> $config_host_mak
2281 echo "LD_I386_EMULATION=$ld_i386_emulation" >> $config_host_mak
2282 echo "STRIP=$strip" >> $config_host_mak
2283 echo "EXESUF=$EXESUF" >> $config_host_mak
2284
2285 # use included Linux headers
2286 if test "$linux" = "yes" ; then
2287   mkdir -p linux-headers
2288   case "$cpu" in
2289   i386|x86_64)
2290     linux_arch=x86
2291     ;;
2292   ppc|ppc64)
2293     linux_arch=powerpc
2294     ;;
2295   s390x)
2296     linux_arch=s390
2297     ;;
2298   aarch64)
2299     linux_arch=arm64
2300     ;;
2301   loongarch*)
2302     linux_arch=loongarch
2303     ;;
2304   mips64)
2305     linux_arch=mips
2306     ;;
2307   *)
2308     # For most CPUs the kernel architecture name and QEMU CPU name match.
2309     linux_arch="$cpu"
2310     ;;
2311   esac
2312     # For non-KVM architectures we will not have asm headers
2313     if [ -e "$source_path/linux-headers/asm-$linux_arch" ]; then
2314       symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
2315     fi
2316 fi
2317
2318 for target in $target_list; do
2319     target_dir="$target"
2320     target_name=$(echo $target | cut -d '-' -f 1)$EXESUF
2321     mkdir -p $target_dir
2322     case $target in
2323         *-user) symlink "../qemu-$target_name" "$target_dir/qemu-$target_name" ;;
2324         *) symlink "../qemu-system-$target_name" "$target_dir/qemu-system-$target_name" ;;
2325     esac
2326 done
2327
2328 if test "$default_targets" = "yes"; then
2329   echo "CONFIG_DEFAULT_TARGETS=y" >> $config_host_mak
2330 fi
2331
2332 if test "$ccache_cpp2" = "yes"; then
2333   echo "export CCACHE_CPP2=y" >> $config_host_mak
2334 fi
2335
2336 if test "$safe_stack" = "yes"; then
2337   echo "CONFIG_SAFESTACK=y" >> $config_host_mak
2338 fi
2339
2340 # If we're using a separate build tree, set it up now.
2341 # LINKS are things to symlink back into the source tree
2342 # (these can be both files and directories).
2343 # Caution: do not add files or directories here using wildcards. This
2344 # will result in problems later if a new file matching the wildcard is
2345 # added to the source tree -- nothing will cause configure to be rerun
2346 # so the build tree will be missing the link back to the new file, and
2347 # tests might fail. Prefer to keep the relevant files in their own
2348 # directory and symlink the directory instead.
2349 LINKS="Makefile"
2350 LINKS="$LINKS tests/tcg/Makefile.target"
2351 LINKS="$LINKS pc-bios/optionrom/Makefile"
2352 LINKS="$LINKS pc-bios/s390-ccw/Makefile"
2353 LINKS="$LINKS .gdbinit scripts" # scripts needed by relative path in .gdbinit
2354 LINKS="$LINKS tests/avocado tests/data"
2355 LINKS="$LINKS tests/qemu-iotests/check"
2356 LINKS="$LINKS python"
2357 LINKS="$LINKS contrib/plugins/Makefile "
2358 for f in $LINKS ; do
2359     if [ -e "$source_path/$f" ]; then
2360         mkdir -p `dirname ./$f`
2361         symlink "$source_path/$f" "$f"
2362     fi
2363 done
2364
2365 # tests/tcg configuration
2366 (makefile=tests/tcg/Makefile.prereqs
2367 echo "# Automatically generated by configure - do not modify" > $makefile
2368
2369 config_host_mak=tests/tcg/config-host.mak
2370 echo "# Automatically generated by configure - do not modify" > $config_host_mak
2371 echo "SRC_PATH=$source_path" >> $config_host_mak
2372 echo "HOST_CC=$host_cc" >> $config_host_mak
2373
2374 tcg_tests_targets=
2375 for target in $target_list; do
2376   arch=${target%%-*}
2377
2378   probe_target_compiler ${arch}
2379   config_target_mak=tests/tcg/config-$target.mak
2380
2381   echo "# Automatically generated by configure - do not modify" > $config_target_mak
2382   echo "TARGET_NAME=$arch" >> $config_target_mak
2383   case $target in
2384     *-softmmu)
2385       test -f $source_path/tests/tcg/$arch/Makefile.softmmu-target || continue
2386       qemu="qemu-system-$arch"
2387       ;;
2388     *-linux-user|*-bsd-user)
2389       qemu="qemu-$arch"
2390       ;;
2391   esac
2392
2393   got_cross_cc=no
2394   unset build_static
2395
2396   if test -n "$target_cc"; then
2397       write_c_skeleton
2398       if ! do_compiler "$target_cc" $target_cflags \
2399            -o $TMPE $TMPC -static ; then
2400           # For host systems we might get away with building without -static
2401           if do_compiler "$target_cc" $target_cflags \
2402                          -o $TMPE $TMPC ; then
2403               got_cross_cc=yes
2404           fi
2405       else
2406           got_cross_cc=yes
2407           build_static=y
2408       fi
2409   elif test -n "$target_as" && test -n "$target_ld"; then
2410       # Special handling for assembler only tests
2411       case $target in
2412           tricore-softmmu) got_cross_cc=yes ;;
2413       esac
2414   fi
2415
2416   if test $got_cross_cc = yes; then
2417       # Test for compiler features for optional tests. We only do this
2418       # for cross compilers because ensuring the docker containers based
2419       # compilers is a requirememt for adding a new test that needs a
2420       # compiler feature.
2421
2422       echo "BUILD_STATIC=$build_static" >> $config_target_mak
2423       write_target_makefile >> $config_target_mak
2424       case $target in
2425           aarch64-*)
2426               if do_compiler "$target_cc" $target_cflags \
2427                              -march=armv8.1-a+sve -o $TMPE $TMPC; then
2428                   echo "CROSS_CC_HAS_SVE=y" >> $config_target_mak
2429               fi
2430               if do_compiler "$target_cc" $target_cflags \
2431                              -march=armv8.1-a+sve2 -o $TMPE $TMPC; then
2432                   echo "CROSS_CC_HAS_SVE2=y" >> $config_target_mak
2433               fi
2434               if do_compiler "$target_cc" $target_cflags \
2435                              -march=armv8.3-a -o $TMPE $TMPC; then
2436                   echo "CROSS_CC_HAS_ARMV8_3=y" >> $config_target_mak
2437               fi
2438               if do_compiler "$target_cc" $target_cflags \
2439                              -mbranch-protection=standard -o $TMPE $TMPC; then
2440                   echo "CROSS_CC_HAS_ARMV8_BTI=y" >> $config_target_mak
2441               fi
2442               if do_compiler "$target_cc" $target_cflags \
2443                              -march=armv8.5-a+memtag -o $TMPE $TMPC; then
2444                   echo "CROSS_CC_HAS_ARMV8_MTE=y" >> $config_target_mak
2445               fi
2446               ;;
2447           ppc*)
2448               if do_compiler "$target_cc" $target_cflags \
2449                              -mpower8-vector -o $TMPE $TMPC; then
2450                   echo "CROSS_CC_HAS_POWER8_VECTOR=y" >> $config_target_mak
2451               fi
2452               if do_compiler "$target_cc" $target_cflags \
2453                              -mpower10 -o $TMPE $TMPC; then
2454                   echo "CROSS_CC_HAS_POWER10=y" >> $config_target_mak
2455               fi
2456               ;;
2457           i386-linux-user)
2458               if do_compiler "$target_cc" $target_cflags \
2459                              -Werror -fno-pie -o $TMPE $TMPC; then
2460                   echo "CROSS_CC_HAS_I386_NOPIE=y" >> $config_target_mak
2461               fi
2462               ;;
2463       esac
2464   elif test -n "$container_image"; then
2465       echo "build-tcg-tests-$target: docker-image-$container_image" >> $makefile
2466       echo "BUILD_STATIC=y" >> $config_target_mak
2467       write_container_target_makefile >> $config_target_mak
2468       case $target in
2469           aarch64-*)
2470               echo "CROSS_CC_HAS_SVE=y" >> $config_target_mak
2471               echo "CROSS_CC_HAS_SVE2=y" >> $config_target_mak
2472               echo "CROSS_CC_HAS_ARMV8_3=y" >> $config_target_mak
2473               echo "CROSS_CC_HAS_ARMV8_BTI=y" >> $config_target_mak
2474               echo "CROSS_CC_HAS_ARMV8_MTE=y" >> $config_target_mak
2475               ;;
2476           ppc*)
2477               echo "CROSS_CC_HAS_POWER8_VECTOR=y" >> $config_target_mak
2478               echo "CROSS_CC_HAS_POWER10=y" >> $config_target_mak
2479               ;;
2480           i386-linux-user)
2481               echo "CROSS_CC_HAS_I386_NOPIE=y" >> $config_target_mak
2482               ;;
2483       esac
2484       got_cross_cc=yes
2485   fi
2486   if test $got_cross_cc = yes; then
2487       mkdir -p tests/tcg/$target
2488       echo "QEMU=$PWD/$qemu" >> $config_target_mak
2489       echo "EXTRA_CFLAGS=$target_cflags" >> $config_target_mak
2490       echo "run-tcg-tests-$target: $qemu\$(EXESUF)" >> $makefile
2491       tcg_tests_targets="$tcg_tests_targets $target"
2492   fi
2493 done
2494 echo "TCG_TESTS_TARGETS=$tcg_tests_targets" >> $makefile)
2495
2496 config_mak=pc-bios/optionrom/config.mak
2497 echo "# Automatically generated by configure - do not modify" > $config_mak
2498 echo "TOPSRC_DIR=$source_path" >> $config_mak
2499
2500 if test "$skip_meson" = no; then
2501   cross="config-meson.cross.new"
2502   meson_quote() {
2503     test $# = 0 && return
2504     echo "'$(echo $* | sed "s/ /','/g")'"
2505   }
2506
2507   echo "# Automatically generated by configure - do not modify" > $cross
2508   echo "[properties]" >> $cross
2509
2510   # unroll any custom device configs
2511   for a in $device_archs; do
2512       eval "c=\$devices_${a}"
2513       echo "${a}-softmmu = '$c'" >> $cross
2514   done
2515
2516   test -z "$cxx" && echo "link_language = 'c'" >> $cross
2517   echo "[built-in options]" >> $cross
2518   echo "c_args = [$(meson_quote $CFLAGS $EXTRA_CFLAGS)]" >> $cross
2519   echo "cpp_args = [$(meson_quote $CXXFLAGS $EXTRA_CXXFLAGS)]" >> $cross
2520   test -n "$objcc" && echo "objc_args = [$(meson_quote $OBJCFLAGS $EXTRA_OBJCFLAGS)]" >> $cross
2521   echo "c_link_args = [$(meson_quote $CFLAGS $LDFLAGS $EXTRA_CFLAGS $EXTRA_LDFLAGS)]" >> $cross
2522   echo "cpp_link_args = [$(meson_quote $CXXFLAGS $LDFLAGS $EXTRA_CXXFLAGS $EXTRA_LDFLAGS)]" >> $cross
2523   echo "[binaries]" >> $cross
2524   echo "c = [$(meson_quote $cc $CPU_CFLAGS)]" >> $cross
2525   test -n "$cxx" && echo "cpp = [$(meson_quote $cxx $CPU_CFLAGS)]" >> $cross
2526   test -n "$objcc" && echo "objc = [$(meson_quote $objcc $CPU_CFLAGS)]" >> $cross
2527   echo "ar = [$(meson_quote $ar)]" >> $cross
2528   echo "nm = [$(meson_quote $nm)]" >> $cross
2529   echo "pkgconfig = [$(meson_quote $pkg_config_exe)]" >> $cross
2530   echo "ranlib = [$(meson_quote $ranlib)]" >> $cross
2531   if has $sdl2_config; then
2532     echo "sdl2-config = [$(meson_quote $sdl2_config)]" >> $cross
2533   fi
2534   echo "strip = [$(meson_quote $strip)]" >> $cross
2535   echo "widl = [$(meson_quote $widl)]" >> $cross
2536   echo "windres = [$(meson_quote $windres)]" >> $cross
2537   if test "$cross_compile" = "yes"; then
2538     cross_arg="--cross-file config-meson.cross"
2539     echo "[host_machine]" >> $cross
2540     echo "system = '$targetos'" >> $cross
2541     case "$cpu" in
2542         i386)
2543             echo "cpu_family = 'x86'" >> $cross
2544             ;;
2545         *)
2546             echo "cpu_family = '$cpu'" >> $cross
2547             ;;
2548     esac
2549     echo "cpu = '$cpu'" >> $cross
2550     if test "$bigendian" = "yes" ; then
2551         echo "endian = 'big'" >> $cross
2552     else
2553         echo "endian = 'little'" >> $cross
2554     fi
2555   else
2556     cross_arg="--native-file config-meson.cross"
2557   fi
2558   mv $cross config-meson.cross
2559
2560   rm -rf meson-private meson-info meson-logs
2561
2562   # Built-in options
2563   test "$bindir" != "bin" && meson_option_add "-Dbindir=$bindir"
2564   test "$default_feature" = no && meson_option_add -Dauto_features=disabled
2565   test "$pie" = no && meson_option_add -Db_pie=false
2566   test "$werror" = yes && meson_option_add -Dwerror=true
2567
2568   # QEMU options
2569   test "$cfi" != false && meson_option_add "-Dcfi=$cfi"
2570   test "$fdt" != auto && meson_option_add "-Dfdt=$fdt"
2571   test -n "${LIB_FUZZING_ENGINE+xxx}" && meson_option_add "-Dfuzzing_engine=$LIB_FUZZING_ENGINE"
2572   test "$qemu_suffix" != qemu && meson_option_add "-Dqemu_suffix=$qemu_suffix"
2573   test "$slirp" != auto && meson_option_add "-Dslirp=$slirp"
2574   test "$smbd" != '' && meson_option_add "-Dsmbd=$smbd"
2575   test "$tcg" != enabled && meson_option_add "-Dtcg=$tcg"
2576   run_meson() {
2577     NINJA=$ninja $meson setup --prefix "$prefix" "$@" $cross_arg "$PWD" "$source_path"
2578   }
2579   eval run_meson $meson_options
2580   if test "$?" -ne 0 ; then
2581       error_exit "meson setup failed"
2582   fi
2583 else
2584   if test -f meson-private/cmd_line.txt; then
2585     # Adjust old command line options whose type was changed
2586     # Avoids having to use "setup --wipe" when Meson is upgraded
2587     perl -i -ne '
2588       s/^gettext = true$/gettext = auto/;
2589       s/^gettext = false$/gettext = disabled/;
2590       /^b_staticpic/ && next;
2591       print;' meson-private/cmd_line.txt
2592   fi
2593 fi
2594
2595 # Save the configure command line for later reuse.
2596 cat <<EOD >config.status
2597 #!/bin/sh
2598 # Generated by configure.
2599 # Run this file to recreate the current configuration.
2600 # Compiler output produced by configure, useful for debugging
2601 # configure, is in config.log if it exists.
2602 EOD
2603
2604 preserve_env() {
2605     envname=$1
2606
2607     eval envval=\$$envname
2608
2609     if test -n "$envval"
2610     then
2611         echo "$envname='$envval'" >> config.status
2612         echo "export $envname" >> config.status
2613     else
2614         echo "unset $envname" >> config.status
2615     fi
2616 }
2617
2618 # Preserve various env variables that influence what
2619 # features/build target configure will detect
2620 preserve_env AR
2621 preserve_env AS
2622 preserve_env CC
2623 preserve_env CFLAGS
2624 preserve_env CXX
2625 preserve_env CXXFLAGS
2626 preserve_env INSTALL
2627 preserve_env LD
2628 preserve_env LDFLAGS
2629 preserve_env LD_LIBRARY_PATH
2630 preserve_env LIBTOOL
2631 preserve_env MAKE
2632 preserve_env NM
2633 preserve_env OBJCOPY
2634 preserve_env PATH
2635 preserve_env PKG_CONFIG
2636 preserve_env PKG_CONFIG_LIBDIR
2637 preserve_env PKG_CONFIG_PATH
2638 preserve_env PYTHON
2639 preserve_env SDL2_CONFIG
2640 preserve_env SMBD
2641 preserve_env STRIP
2642 preserve_env WIDL
2643 preserve_env WINDRES
2644
2645 printf "exec" >>config.status
2646 for i in "$0" "$@"; do
2647   test "$i" = --skip-meson || printf " %s" "$(quote_sh "$i")" >>config.status
2648 done
2649 echo ' "$@"' >>config.status
2650 chmod +x config.status
2651
2652 rm -r "$TMPDIR1"