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