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 vfio_user_server="disabled"
 319
 320 # The following Meson options are handled manually (still they
 321 # are included in the automatically generated help message)
 322
 323 # 1. Track which submodules are needed
 324 if test "$default_feature" = no ; then
 325   slirp="disabled"
 326 else
 327   slirp="auto"
 328 fi
 329 fdt="auto"
 330
 331 # 2. Automatically enable/disable other options
 332 tcg="auto"
 333 cfi="false"
 334
 335 # parse CC options second
 336 for opt do
 337   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 338   case "$opt" in
 339   --cross-prefix=*) cross_prefix="$optarg"
 340                     cross_compile="yes"
 341   ;;
 342   --cc=*) CC="$optarg"
 343   ;;
 344   --cxx=*) CXX="$optarg"
 345   ;;
 346   --cpu=*) cpu="$optarg"
 347   ;;
 348   --extra-cflags=*)
 349     EXTRA_CFLAGS="$EXTRA_CFLAGS $optarg"
 350     EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
 351     EXTRA_OBJCFLAGS="$EXTRA_OBJCFLAGS $optarg"
 352     ;;
 353   --extra-cxxflags=*) EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
 354   ;;
 355   --extra-objcflags=*) EXTRA_OBJCFLAGS="$EXTRA_OBJCFLAGS $optarg"
 356   ;;
 357   --extra-ldflags=*) EXTRA_LDFLAGS="$EXTRA_LDFLAGS $optarg"
 358   ;;
 359   --cross-cc-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-cc-FOO option"
 360   ;;
 361   --cross-cc-cflags-*) cc_arch=${opt#--cross-cc-cflags-}; cc_arch=${cc_arch%%=*}
 362                       eval "cross_cc_cflags_${cc_arch}=\$optarg"
 363   ;;
 364   --cross-cc-*) cc_arch=${opt#--cross-cc-}; cc_arch=${cc_arch%%=*}
 365                 eval "cross_cc_${cc_arch}=\$optarg"
 366   ;;
 367   --cross-prefix-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-prefix-FOO option"
 368   ;;
 369   --cross-prefix-*) cc_arch=${opt#--cross-prefix-}; cc_arch=${cc_arch%%=*}
 370                     eval "cross_prefix_${cc_arch}=\$optarg"
 371   ;;
 372   esac
 373 done
 374 # OS specific
 375 # Using uname is really, really broken.  Once we have the right set of checks
 376 # we can eliminate its usage altogether.
 377
 378 # Preferred compiler:
 379 #  ${CC} (if set)
 380 #  ${cross_prefix}gcc (if cross-prefix specified)
 381 #  system compiler
 382 if test -z "${CC}${cross_prefix}"; then
 383   cc="$host_cc"
 384 else
 385   cc="${CC-${cross_prefix}gcc}"
 386 fi
 387
 388 if test -z "${CXX}${cross_prefix}"; then
 389   cxx="c++"
 390 else
 391   cxx="${CXX-${cross_prefix}g++}"
 392 fi
 393
 394 ar="${AR-${cross_prefix}ar}"
 395 as="${AS-${cross_prefix}as}"
 396 ccas="${CCAS-$cc}"
 397 objcopy="${OBJCOPY-${cross_prefix}objcopy}"
 398 ld="${LD-${cross_prefix}ld}"
 399 ranlib="${RANLIB-${cross_prefix}ranlib}"
 400 nm="${NM-${cross_prefix}nm}"
 401 smbd="$SMBD"
 402 strip="${STRIP-${cross_prefix}strip}"
 403 widl="${WIDL-${cross_prefix}widl}"
 404 windres="${WINDRES-${cross_prefix}windres}"
 405 pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
 406 query_pkg_config() {
 407     "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
 408 }
 409 pkg_config=query_pkg_config
 410 sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"
 411
 412 # default flags for all hosts
 413 # We use -fwrapv to tell the compiler that we require a C dialect where
 414 # left shift of signed integers is well defined and has the expected
 415 # 2s-complement style results. (Both clang and gcc agree that it
 416 # provides these semantics.)
 417 QEMU_CFLAGS="-fno-strict-aliasing -fno-common -fwrapv"
 418 QEMU_CFLAGS="-Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
 419 QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
 420 QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
 421
 422 QEMU_LDFLAGS=
 423
 424 # Flags that are needed during configure but later taken care of by Meson
 425 CONFIGURE_CFLAGS="-std=gnu11 -Wall"
 426 CONFIGURE_LDFLAGS=
 427
 428
 429 check_define() {
 430 cat > $TMPC <<EOF
 431 #if !defined($1)
 432 #error $1 not defined
 433 #endif
 434 int main(void) { return 0; }
 435 EOF
 436   compile_object
 437 }
 438
 439 check_include() {
 440 cat > $TMPC <<EOF
 441 #include <$1>
 442 int main(void) { return 0; }
 443 EOF
 444   compile_object
 445 }
 446
 447 write_c_skeleton() {
 448     cat > $TMPC <<EOF
 449 int main(void) { return 0; }
 450 EOF
 451 }
 452
 453 if check_define __linux__ ; then
 454   targetos=linux
 455 elif check_define _WIN32 ; then
 456   targetos=windows
 457 elif check_define __OpenBSD__ ; then
 458   targetos=openbsd
 459 elif check_define __sun__ ; then
 460   targetos=sunos
 461 elif check_define __HAIKU__ ; then
 462   targetos=haiku
 463 elif check_define __FreeBSD__ ; then
 464   targetos=freebsd
 465 elif check_define __FreeBSD_kernel__ && check_define __GLIBC__; then
 466   targetos=gnu/kfreebsd
 467 elif check_define __DragonFly__ ; then
 468   targetos=dragonfly
 469 elif check_define __NetBSD__; then
 470   targetos=netbsd
 471 elif check_define __APPLE__; then
 472   targetos=darwin
 473 else
 474   # This is a fatal error, but don't report it yet, because we
 475   # might be going to just print the --help text, or it might
 476   # be the result of a missing compiler.
 477   targetos=bogus
 478 fi
 479
 480 # OS specific
 481
 482 mingw32="no"
 483 bsd="no"
 484 linux="no"
 485 solaris="no"
 486 case $targetos in
 487 windows)
 488   mingw32="yes"
 489   plugins="no"
 490   pie="no"
 491 ;;
 492 gnu/kfreebsd)
 493   bsd="yes"
 494 ;;
 495 freebsd)
 496   bsd="yes"
 497   make="${MAKE-gmake}"
 498   # needed for kinfo_getvmmap(3) in libutil.h
 499 ;;
 500 dragonfly)
 501   bsd="yes"
 502   make="${MAKE-gmake}"
 503 ;;
 504 netbsd)
 505   bsd="yes"
 506   make="${MAKE-gmake}"
 507 ;;
 508 openbsd)
 509   bsd="yes"
 510   make="${MAKE-gmake}"
 511 ;;
 512 darwin)
 513   bsd="yes"
 514   darwin="yes"
 515   # Disable attempts to use ObjectiveC features in os/object.h since they
 516   # won't work when we're compiling with gcc as a C compiler.
 517   QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
 518 ;;
 519 sunos)
 520   solaris="yes"
 521   make="${MAKE-gmake}"
 522 # needed for CMSG_ macros in sys/socket.h
 523   QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
 524 # needed for TIOCWIN* defines in termios.h
 525   QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
 526   # $(uname -m) returns i86pc even on an x86_64 box, so default based on isainfo
 527   # Note that this check is broken for cross-compilation: if you're
 528   # cross-compiling to one of these OSes then you'll need to specify
 529   # the correct CPU with the --cpu option.
 530   if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then
 531     cpu="x86_64"
 532   fi
 533 ;;
 534 haiku)
 535   pie="no"
 536   QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -D_BSD_SOURCE -fPIC $QEMU_CFLAGS"
 537 ;;
 538 linux)
 539   linux="yes"
 540 ;;
 541 esac
 542
 543 if test ! -z "$cpu" ; then
 544   # command line argument
 545   :
 546 elif check_define __i386__ ; then
 547   cpu="i386"
 548 elif check_define __x86_64__ ; then
 549   if check_define __ILP32__ ; then
 550     cpu="x32"
 551   else
 552     cpu="x86_64"
 553   fi
 554 elif check_define __sparc__ ; then
 555   if check_define __arch64__ ; then
 556     cpu="sparc64"
 557   else
 558     cpu="sparc"
 559   fi
 560 elif check_define _ARCH_PPC ; then
 561   if check_define _ARCH_PPC64 ; then
 562     if check_define _LITTLE_ENDIAN ; then
 563       cpu="ppc64le"
 564     else
 565       cpu="ppc64"
 566     fi
 567   else
 568     cpu="ppc"
 569   fi
 570 elif check_define __mips__ ; then
 571   cpu="mips"
 572 elif check_define __s390__ ; then
 573   if check_define __s390x__ ; then
 574     cpu="s390x"
 575   else
 576     cpu="s390"
 577   fi
 578 elif check_define __riscv ; then
 579   cpu="riscv"
 580 elif check_define __arm__ ; then
 581   cpu="arm"
 582 elif check_define __aarch64__ ; then
 583   cpu="aarch64"
 584 elif check_define __loongarch64 ; then
 585   cpu="loongarch64"
 586 else
 587   cpu=$(uname -m)
 588 fi
 589
 590 # Normalise host CPU name, set multilib cflags
 591 # Note that this case should only have supported host CPUs, not guests.
 592 case "$cpu" in
 593   armv*b|armv*l|arm)
 594     cpu="arm" ;;
 595
 596   i386|i486|i586|i686|i86pc|BePC)
 597     cpu="i386"
 598     CPU_CFLAGS="-m32" ;;
 599   x32)
 600     cpu="x86_64"
 601     CPU_CFLAGS="-mx32" ;;
 602   x86_64|amd64)
 603     cpu="x86_64"
 604     # ??? Only extremely old AMD cpus do not have cmpxchg16b.
 605     # If we truly care, we should simply detect this case at
 606     # runtime and generate the fallback to serial emulation.
 607     CPU_CFLAGS="-m64 -mcx16" ;;
 608
 609   mips*)
 610     cpu="mips" ;;
 611
 612   ppc)
 613     CPU_CFLAGS="-m32" ;;
 614   ppc64)
 615     CPU_CFLAGS="-m64 -mbig-endian" ;;
 616   ppc64le)
 617     cpu="ppc64"
 618     CPU_CFLAGS="-m64 -mlittle-endian" ;;
 619
 620   s390)
 621     CPU_CFLAGS="-m31" ;;
 622   s390x)
 623     CPU_CFLAGS="-m64" ;;
 624
 625   sparc|sun4[cdmuv])
 626     cpu="sparc"
 627     CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc" ;;
 628   sparc64)
 629     CPU_CFLAGS="-m64 -mcpu=ultrasparc" ;;
 630 esac
 631
 632 : ${make=${MAKE-make}}
 633
 634 # We prefer python 3.x. A bare 'python' is traditionally
 635 # python 2.x, but some distros have it as python 3.x, so
 636 # we check that too
 637 python=
 638 explicit_python=no
 639 for binary in "${PYTHON-python3}" python
 640 do
 641     if has "$binary"
 642     then
 643         python=$(command -v "$binary")
 644         break
 645     fi
 646 done
 647
 648
 649 # Check for ancillary tools used in testing
 650 genisoimage=
 651 for binary in genisoimage mkisofs
 652 do
 653     if has $binary
 654     then
 655         genisoimage=$(command -v "$binary")
 656         break
 657     fi
 658 done
 659
 660 # Default objcc to clang if available, otherwise use CC
 661 if has clang; then
 662   objcc=clang
 663 else
 664   objcc="$cc"
 665 fi
 666
 667 if test "$mingw32" = "yes" ; then
 668   EXESUF=".exe"
 669   # MinGW needs -mthreads for TLS and macro _MT.
 670   CONFIGURE_CFLAGS="-mthreads $CONFIGURE_CFLAGS"
 671   write_c_skeleton;
 672   prefix="/qemu"
 673   bindir=""
 674   qemu_suffix=""
 675 fi
 676
 677 werror=""
 678
 679 meson_option_build_array() {
 680   printf '['
 681   (if test "$targetos" = windows; then
 682     IFS=\;
 683   else
 684     IFS=:
 685   fi
 686   for e in $1; do
 687     printf '"""'
 688     # backslash escape any '\' and '"' characters
 689     printf "%s" "$e" | sed -e 's/\([\"]\)/\\\1/g'
 690     printf '""",'
 691   done)
 692   printf ']\n'
 693 }
 694
 695 . $source_path/scripts/meson-buildoptions.sh
 696
 697 meson_options=
 698 meson_option_add() {
 699   meson_options="$meson_options $(quote_sh "$1")"
 700 }
 701 meson_option_parse() {
 702   meson_options="$meson_options $(_meson_option_parse "$@")"
 703   if test $? -eq 1; then
 704     echo "ERROR: unknown option $1"
 705     echo "Try '$0 --help' for more information"
 706     exit 1
 707   fi
 708 }
 709
 710 for opt do
 711   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
 712   case "$opt" in
 713   --help|-h) show_help=yes
 714   ;;
 715   --version|-V) exec cat $source_path/VERSION
 716   ;;
 717   --prefix=*) prefix="$optarg"
 718   ;;
 719   --cross-prefix=*)
 720   ;;
 721   --cc=*)
 722   ;;
 723   --host-cc=*) host_cc="$optarg"
 724   ;;
 725   --cxx=*)
 726   ;;
 727   --objcc=*) objcc="$optarg"
 728   ;;
 729   --make=*) make="$optarg"
 730   ;;
 731   --install=*)
 732   ;;
 733   --python=*) python="$optarg" ; explicit_python=yes
 734   ;;
 735   --skip-meson) skip_meson=yes
 736   ;;
 737   --meson=*) meson="$optarg"
 738   ;;
 739   --ninja=*) ninja="$optarg"
 740   ;;
 741   --smbd=*) smbd="$optarg"
 742   ;;
 743   --extra-cflags=*)
 744   ;;
 745   --extra-cxxflags=*)
 746   ;;
 747   --extra-objcflags=*)
 748   ;;
 749   --extra-ldflags=*)
 750   ;;
 751   --cross-cc-*)
 752   ;;
 753   --cross-prefix-*)
 754   ;;
 755   --enable-debug-info) meson_option_add -Ddebug=true
 756   ;;
 757   --disable-debug-info) meson_option_add -Ddebug=false
 758   ;;
 759   --enable-modules)
 760       modules="yes"
 761   ;;
 762   --disable-modules)
 763       modules="no"
 764   ;;
 765   --cpu=*)
 766   ;;
 767   --target-list=*) target_list="$optarg"
 768                    if test "$target_list_exclude"; then
 769                        error_exit "Can't mix --target-list with --target-list-exclude"
 770                    fi
 771   ;;
 772   --target-list-exclude=*) target_list_exclude="$optarg"
 773                    if test "$target_list"; then
 774                        error_exit "Can't mix --target-list-exclude with --target-list"
 775                    fi
 776   ;;
 777   --with-default-devices) meson_option_add -Ddefault_devices=true
 778   ;;
 779   --without-default-devices) meson_option_add -Ddefault_devices=false
 780   ;;
 781   --with-devices-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --with-devices-FOO option"
 782   ;;
 783   --with-devices-*) device_arch=${opt#--with-devices-};
 784                     device_arch=${device_arch%%=*}
 785                     cf=$source_path/configs/devices/$device_arch-softmmu/$optarg.mak
 786                     if test -f "$cf"; then
 787                         device_archs="$device_archs $device_arch"
 788                         eval "devices_${device_arch}=\$optarg"
 789                     else
 790                         error_exit "File $cf does not exist"
 791                     fi
 792   ;;
 793   --without-default-features) # processed above
 794   ;;
 795   --static)
 796     static="yes"
 797     QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
 798   ;;
 799   --bindir=*) bindir="$optarg"
 800   ;;
 801   --with-suffix=*) qemu_suffix="$optarg"
 802   ;;
 803   --host=*|--build=*|\
 804   --disable-dependency-tracking|\
 805   --sbindir=*|--sharedstatedir=*|\
 806   --oldincludedir=*|--datarootdir=*|--infodir=*|\
 807   --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
 808     # These switches are silently ignored, for compatibility with
 809     # autoconf-generated configure scripts. This allows QEMU's
 810     # configure to be used by RPM and similar macros that set
 811     # lots of directory switches by default.
 812   ;;
 813   --enable-debug-tcg) debug_tcg="yes"
 814   ;;
 815   --disable-debug-tcg) debug_tcg="no"
 816   ;;
 817   --enable-debug)
 818       # Enable debugging options that aren't excessively noisy
 819       debug_tcg="yes"
 820       meson_option_parse --enable-debug-mutex ""
 821       meson_option_add -Doptimization=0
 822       fortify_source="no"
 823   ;;
 824   --enable-sanitizers) sanitizers="yes"
 825   ;;
 826   --disable-sanitizers) sanitizers="no"
 827   ;;
 828   --enable-tsan) tsan="yes"
 829   ;;
 830   --disable-tsan) tsan="no"
 831   ;;
 832   --disable-slirp) slirp="disabled"
 833   ;;
 834   --enable-slirp) slirp="enabled"
 835   ;;
 836   --enable-slirp=git) slirp="internal"
 837   ;;
 838   --enable-slirp=*) slirp="$optarg"
 839   ;;
 840   --disable-tcg) tcg="disabled"
 841                  plugins="no"
 842   ;;
 843   --enable-tcg) tcg="enabled"
 844   ;;
 845   --disable-system) softmmu="no"
 846   ;;
 847   --enable-system) softmmu="yes"
 848   ;;
 849   --disable-user)
 850       linux_user="no" ;
 851       bsd_user="no" ;
 852   ;;
 853   --enable-user) ;;
 854   --disable-linux-user) linux_user="no"
 855   ;;
 856   --enable-linux-user) linux_user="yes"
 857   ;;
 858   --disable-bsd-user) bsd_user="no"
 859   ;;
 860   --enable-bsd-user) bsd_user="yes"
 861   ;;
 862   --enable-pie) pie="yes"
 863   ;;
 864   --disable-pie) pie="no"
 865   ;;
 866   --enable-werror) werror="yes"
 867   ;;
 868   --disable-werror) werror="no"
 869   ;;
 870   --enable-stack-protector) stack_protector="yes"
 871   ;;
 872   --disable-stack-protector) stack_protector="no"
 873   ;;
 874   --enable-safe-stack) safe_stack="yes"
 875   ;;
 876   --disable-safe-stack) safe_stack="no"
 877   ;;
 878   --enable-cfi)
 879       cfi="true";
 880       meson_option_add -Db_lto=true
 881   ;;
 882   --disable-cfi) cfi="false"
 883   ;;
 884   --disable-fdt) fdt="disabled"
 885   ;;
 886   --enable-fdt) fdt="enabled"
 887   ;;
 888   --enable-fdt=git) fdt="internal"
 889   ;;
 890   --enable-fdt=*) fdt="$optarg"
 891   ;;
 892   --with-coroutine=*) coroutine="$optarg"
 893   ;;
 894   --disable-zlib-test)
 895   ;;
 896   --disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
 897       echo "$0: $opt is obsolete, virtio-blk data-plane is always on" >&2
 898   ;;
 899   --enable-vhdx|--disable-vhdx)
 900       echo "$0: $opt is obsolete, VHDX driver is always built" >&2
 901   ;;
 902   --enable-uuid|--disable-uuid)
 903       echo "$0: $opt is obsolete, UUID support is always built" >&2
 904   ;;
 905   --with-git=*) git="$optarg"
 906   ;;
 907   --with-git-submodules=*)
 908       git_submodules_action="$optarg"
 909   ;;
 910   --enable-plugins) if test "$mingw32" = "yes"; then
 911                         error_exit "TCG plugins not currently supported on Windows platforms"
 912                     else
 913                         plugins="yes"
 914                     fi
 915   ;;
 916   --disable-plugins) plugins="no"
 917   ;;
 918   --enable-containers) use_containers="yes"
 919   ;;
 920   --disable-containers) use_containers="no"
 921   ;;
 922   --gdb=*) gdb_bin="$optarg"
 923   ;;
 924   # backwards compatibility options
 925   --enable-trace-backend=*) meson_option_parse "--enable-trace-backends=$optarg" "$optarg"
 926   ;;
 927   --disable-blobs) meson_option_parse --disable-install-blobs ""
 928   ;;
 929   --enable-vfio-user-server) vfio_user_server="enabled"
 930   ;;
 931   --disable-vfio-user-server) vfio_user_server="disabled"
 932   ;;
 933   --enable-tcmalloc) meson_option_parse --enable-malloc=tcmalloc tcmalloc
 934   ;;
 935   --enable-jemalloc) meson_option_parse --enable-malloc=jemalloc jemalloc
 936   ;;
 937   # everything else has the same name in configure and meson
 938   --*) meson_option_parse "$opt" "$optarg"
 939   ;;
 940   esac
 941 done
 942
 943 # test for any invalid configuration combinations
 944 if test "$plugins" = "yes" -a "$tcg" = "disabled"; then
 945     error_exit "Can't enable plugins on non-TCG builds"
 946 fi
 947
 948 case $git_submodules_action in
 949     update|validate)
 950         if test ! -e "$source_path/.git"; then
 951             echo "ERROR: cannot $git_submodules_action git submodules without .git"
 952             exit 1
 953         fi
 954     ;;
 955     ignore)
 956         if ! test -f "$source_path/ui/keycodemapdb/README"
 957         then
 958             echo
 959             echo "ERROR: missing GIT submodules"
 960             echo
 961             if test -e "$source_path/.git"; then
 962                 echo "--with-git-submodules=ignore specified but submodules were not"
 963                 echo "checked out.  Please initialize and update submodules."
 964             else
 965                 echo "This is not a GIT checkout but module content appears to"
 966                 echo "be missing. Do not use 'git archive' or GitHub download links"
 967                 echo "to acquire QEMU source archives. Non-GIT builds are only"
 968                 echo "supported with source archives linked from:"
 969                 echo
 970                 echo "  https://www.qemu.org/download/#source"
 971                 echo
 972                 echo "Developers working with GIT can use scripts/archive-source.sh"
 973                 echo "if they need to create valid source archives."
 974             fi
 975             echo
 976             exit 1
 977         fi
 978     ;;
 979     *)
 980         echo "ERROR: invalid --with-git-submodules= value '$git_submodules_action'"
 981         exit 1
 982     ;;
 983 esac
 984
 985 default_target_list=""
 986 mak_wilds=""
 987
 988 if [ "$linux_user" != no ]; then
 989     if [ "$targetos" = linux ] && [ -d $source_path/linux-user/include/host/$cpu ]; then
 990         linux_user=yes
 991     elif [ "$linux_user" = yes ]; then
 992         error_exit "linux-user not supported on this architecture"
 993     fi
 994 fi
 995 if [ "$bsd_user" != no ]; then
 996     if [ "$bsd_user" = "" ]; then
 997         test $targetos = freebsd && bsd_user=yes
 998     fi
 999     if [ "$bsd_user" = yes ] && ! [ -d $source_path/bsd-user/$targetos ]; then
1000         error_exit "bsd-user not supported on this host OS"
1001     fi
1002 fi
1003 if [ "$softmmu" = "yes" ]; then
1004     mak_wilds="${mak_wilds} $source_path/configs/targets/*-softmmu.mak"
1005 fi
1006 if [ "$linux_user" = "yes" ]; then
1007     mak_wilds="${mak_wilds} $source_path/configs/targets/*-linux-user.mak"
1008 fi
1009 if [ "$bsd_user" = "yes" ]; then
1010     mak_wilds="${mak_wilds} $source_path/configs/targets/*-bsd-user.mak"
1011 fi
1012
1013 for config in $mak_wilds; do
1014     target="$(basename "$config" .mak)"
1015     if echo "$target_list_exclude" | grep -vq "$target"; then
1016         default_target_list="${default_target_list} $target"
1017     fi
1018 done
1019
1020 if test x"$show_help" = x"yes" ; then
1021 cat << EOF
1022
1023 Usage: configure [options]
1024 Options: [defaults in brackets after descriptions]
1025
1026 Standard options:
1027   --help                   print this message
1028   --prefix=PREFIX          install in PREFIX [$prefix]
1029   --target-list=LIST       set target list (default: build all)
1030 $(echo Available targets: $default_target_list | \
1031   fold -s -w 53 | sed -e 's/^/                           /')
1032   --target-list-exclude=LIST exclude a set of targets from the default target-list
1033
1034 Advanced options (experts only):
1035   --cross-prefix=PREFIX    use PREFIX for compile tools, PREFIX can be blank [$cross_prefix]
1036   --cc=CC                  use C compiler CC [$cc]
1037   --host-cc=CC             use C compiler CC [$host_cc] for code run at
1038                            build time
1039   --cxx=CXX                use C++ compiler CXX [$cxx]
1040   --objcc=OBJCC            use Objective-C compiler OBJCC [$objcc]
1041   --extra-cflags=CFLAGS    append extra C compiler flags CFLAGS
1042   --extra-cxxflags=CXXFLAGS append extra C++ compiler flags CXXFLAGS
1043   --extra-objcflags=OBJCFLAGS append extra Objective C compiler flags OBJCFLAGS
1044   --extra-ldflags=LDFLAGS  append extra linker flags LDFLAGS
1045   --cross-cc-ARCH=CC       use compiler when building ARCH guest test cases
1046   --cross-cc-cflags-ARCH=  use compiler flags when building ARCH guest tests
1047   --cross-prefix-ARCH=PREFIX cross compiler prefix when building ARCH guest test cases
1048   --make=MAKE              use specified make [$make]
1049   --python=PYTHON          use specified python [$python]
1050   --meson=MESON            use specified meson [$meson]
1051   --ninja=NINJA            use specified ninja [$ninja]
1052   --smbd=SMBD              use specified smbd [$smbd]
1053   --with-git=GIT           use specified git [$git]
1054   --with-git-submodules=update   update git submodules (default if .git dir exists)
1055   --with-git-submodules=validate fail if git submodules are not up to date
1056   --with-git-submodules=ignore   do not update or check git submodules (default if no .git dir)
1057   --static                 enable static build [$static]
1058   --bindir=PATH            install binaries in PATH
1059   --with-suffix=SUFFIX     suffix for QEMU data inside datadir/libdir/sysconfdir/docdir [$qemu_suffix]
1060   --without-default-features default all --enable-* options to "disabled"
1061   --without-default-devices  do not include any device that is not needed to
1062                            start the emulator (only use if you are including
1063                            desired devices in configs/devices/)
1064   --with-devices-ARCH=NAME override default configs/devices
1065   --enable-debug           enable common debug build options
1066   --enable-sanitizers      enable default sanitizers
1067   --enable-tsan            enable thread sanitizer
1068   --disable-werror         disable compilation abort on warning
1069   --disable-stack-protector disable compiler-provided stack protection
1070   --cpu=CPU                Build for host CPU [$cpu]
1071   --with-coroutine=BACKEND coroutine backend. Supported options:
1072                            ucontext, sigaltstack, windows
1073   --enable-plugins
1074                            enable plugins via shared library loading
1075   --disable-containers     don't use containers for cross-building
1076   --gdb=GDB-path           gdb to use for gdbstub tests [$gdb_bin]
1077 EOF
1078   meson_options_help
1079 cat << EOF
1080   system          all system emulation targets
1081   user            supported user emulation targets
1082   linux-user      all linux usermode emulation targets
1083   bsd-user        all BSD usermode emulation targets
1084   pie             Position Independent Executables
1085   modules         modules support (non-Windows)
1086   debug-tcg       TCG debugging (default is disabled)
1087   debug-info      debugging information
1088   safe-stack      SafeStack Stack Smash Protection. Depends on
1089                   clang/llvm >= 3.7 and requires coroutine backend ucontext.
1090
1091 NOTE: The object files are built at the place where configure is launched
1092 EOF
1093 exit 0
1094 fi
1095
1096 # Remove old dependency files to make sure that they get properly regenerated
1097 rm -f */config-devices.mak.d
1098
1099 if test -z "$python"
1100 then
1101     error_exit "Python not found. Use --python=/path/to/python"
1102 fi
1103 if ! has "$make"
1104 then
1105     error_exit "GNU make ($make) not found"
1106 fi
1107
1108 # Note that if the Python conditional here evaluates True we will exit
1109 # with status 1 which is a shell 'false' value.
1110 if ! $python -c 'import sys; sys.exit(sys.version_info < (3,6))'; then
1111   error_exit "Cannot use '$python', Python >= 3.6 is required." \
1112       "Use --python=/path/to/python to specify a supported Python."
1113 fi
1114
1115 # Preserve python version since some functionality is dependent on it
1116 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)
1117
1118 # Suppress writing compiled files
1119 python="$python -B"
1120
1121 if test -z "$meson"; then
1122     if test "$explicit_python" = no && has meson && version_ge "$(meson --version)" 0.59.3; then
1123         meson=meson
1124     elif test $git_submodules_action != 'ignore' ; then
1125         meson=git
1126     elif test -e "${source_path}/meson/meson.py" ; then
1127         meson=internal
1128     else
1129         if test "$explicit_python" = yes; then
1130             error_exit "--python requires using QEMU's embedded Meson distribution, but it was not found."
1131         else
1132             error_exit "Meson not found.  Use --meson=/path/to/meson"
1133         fi
1134     fi
1135 else
1136     # Meson uses its own Python interpreter to invoke other Python scripts,
1137     # but the user wants to use the one they specified with --python.
1138     #
1139     # We do not want to override the distro Python interpreter (and sometimes
1140     # cannot: for example in Homebrew /usr/bin/meson is a bash script), so
1141     # just require --meson=git|internal together with --python.
1142     if test "$explicit_python" = yes; then
1143         case "$meson" in
1144             git | internal) ;;
1145             *) error_exit "--python requires using QEMU's embedded Meson distribution." ;;
1146         esac
1147     fi
1148 fi
1149
1150 if test "$meson" = git; then
1151     git_submodules="${git_submodules} meson"
1152 fi
1153
1154 case "$meson" in
1155     git | internal)
1156         meson="$python ${source_path}/meson/meson.py"
1157         ;;
1158     *) meson=$(command -v "$meson") ;;
1159 esac
1160
1161 # Probe for ninja
1162
1163 if test -z "$ninja"; then
1164     for c in ninja ninja-build samu; do
1165         if has $c; then
1166             ninja=$(command -v "$c")
1167             break
1168         fi
1169     done
1170     if test -z "$ninja"; then
1171       error_exit "Cannot find Ninja"
1172     fi
1173 fi
1174
1175 # Check that the C compiler works. Doing this here before testing
1176 # the host CPU ensures that we had a valid CC to autodetect the
1177 # $cpu var (and we should bail right here if that's not the case).
1178 # It also allows the help message to be printed without a CC.
1179 write_c_skeleton;
1180 if compile_object ; then
1181   : C compiler works ok
1182 else
1183     error_exit "\"$cc\" either does not exist or does not work"
1184 fi
1185 if ! compile_prog ; then
1186     error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
1187 fi
1188
1189 # Consult white-list to determine whether to enable werror
1190 # by default.  Only enable by default for git builds
1191 if test -z "$werror" ; then
1192     if test "$git_submodules_action" != "ignore" && \
1193         { test "$linux" = "yes" || test "$mingw32" = "yes"; }; then
1194         werror="yes"
1195     else
1196         werror="no"
1197     fi
1198 fi
1199
1200 if test "$targetos" = "bogus"; then
1201     # Now that we know that we're not printing the help and that
1202     # the compiler works (so the results of the check_defines we used
1203     # to identify the OS are reliable), if we didn't recognize the
1204     # host OS we should stop now.
1205     error_exit "Unrecognized host OS (uname -s reports '$(uname -s)')"
1206 fi
1207
1208 # Check whether the compiler matches our minimum requirements:
1209 cat > $TMPC << EOF
1210 #if defined(__clang_major__) && defined(__clang_minor__)
1211 # ifdef __apple_build_version__
1212 #  if __clang_major__ < 10 || (__clang_major__ == 10 && __clang_minor__ < 0)
1213 #   error You need at least XCode Clang v10.0 to compile QEMU
1214 #  endif
1215 # else
1216 #  if __clang_major__ < 6 || (__clang_major__ == 6 && __clang_minor__ < 0)
1217 #   error You need at least Clang v6.0 to compile QEMU
1218 #  endif
1219 # endif
1220 #elif defined(__GNUC__) && defined(__GNUC_MINOR__)
1221 # if __GNUC__ < 7 || (__GNUC__ == 7 && __GNUC_MINOR__ < 4)
1222 #  error You need at least GCC v7.4.0 to compile QEMU
1223 # endif
1224 #else
1225 # error You either need GCC or Clang to compiler QEMU
1226 #endif
1227 int main (void) { return 0; }
1228 EOF
1229 if ! compile_prog "" "" ; then
1230     error_exit "You need at least GCC v7.4 or Clang v6.0 (or XCode Clang v10.0)"
1231 fi
1232
1233 # Accumulate -Wfoo and -Wno-bar separately.
1234 # We will list all of the enable flags first, and the disable flags second.
1235 # Note that we do not add -Werror, because that would enable it for all
1236 # configure tests. If a configure test failed due to -Werror this would
1237 # just silently disable some features, so it's too error prone.
1238
1239 warn_flags=
1240 add_to warn_flags -Wold-style-declaration
1241 add_to warn_flags -Wold-style-definition
1242 add_to warn_flags -Wtype-limits
1243 add_to warn_flags -Wformat-security
1244 add_to warn_flags -Wformat-y2k
1245 add_to warn_flags -Winit-self
1246 add_to warn_flags -Wignored-qualifiers
1247 add_to warn_flags -Wempty-body
1248 add_to warn_flags -Wnested-externs
1249 add_to warn_flags -Wendif-labels
1250 add_to warn_flags -Wexpansion-to-defined
1251 add_to warn_flags -Wimplicit-fallthrough=2
1252
1253 nowarn_flags=
1254 add_to nowarn_flags -Wno-initializer-overrides
1255 add_to nowarn_flags -Wno-missing-include-dirs
1256 add_to nowarn_flags -Wno-shift-negative-value
1257 add_to nowarn_flags -Wno-string-plus-int
1258 add_to nowarn_flags -Wno-typedef-redefinition
1259 add_to nowarn_flags -Wno-tautological-type-limit-compare
1260 add_to nowarn_flags -Wno-psabi
1261
1262 gcc_flags="$warn_flags $nowarn_flags"
1263
1264 cc_has_warning_flag() {
1265     write_c_skeleton;
1266
1267     # Use the positive sense of the flag when testing for -Wno-wombat
1268     # support (gcc will happily accept the -Wno- form of unknown
1269     # warning options).
1270     optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1271     compile_prog "-Werror $optflag" ""
1272 }
1273
1274 objcc_has_warning_flag() {
1275     cat > $TMPM <<EOF
1276 int main(void) { return 0; }
1277 EOF
1278
1279     # Use the positive sense of the flag when testing for -Wno-wombat
1280     # support (gcc will happily accept the -Wno- form of unknown
1281     # warning options).
1282     optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1283     do_objc -Werror $optflag \
1284       $OBJCFLAGS $EXTRA_OBJCFLAGS $CONFIGURE_OBJCFLAGS $QEMU_OBJCFLAGS \
1285       -o $TMPE $TMPM $QEMU_LDFLAGS
1286 }
1287
1288 for flag in $gcc_flags; do
1289     if cc_has_warning_flag $flag ; then
1290         QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1291     fi
1292     if objcc_has_warning_flag $flag ; then
1293         QEMU_OBJCFLAGS="$QEMU_OBJCFLAGS $flag"
1294     fi
1295 done
1296
1297 if test "$stack_protector" != "no"; then
1298   cat > $TMPC << EOF
1299 int main(int argc, char *argv[])
1300 {
1301     char arr[64], *p = arr, *c = argv[0];
1302     while (*c) {
1303         *p++ = *c++;
1304     }
1305     return 0;
1306 }
1307 EOF
1308   gcc_flags="-fstack-protector-strong -fstack-protector-all"
1309   sp_on=0
1310   for flag in $gcc_flags; do
1311     # We need to check both a compile and a link, since some compiler
1312     # setups fail only on a .c->.o compile and some only at link time
1313     if compile_object "-Werror $flag" &&
1314        compile_prog "-Werror $flag" ""; then
1315       QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1316       QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
1317       sp_on=1
1318       break
1319     fi
1320   done
1321   if test "$stack_protector" = yes; then
1322     if test $sp_on = 0; then
1323       error_exit "Stack protector not supported"
1324     fi
1325   fi
1326 fi
1327
1328 # Disable -Wmissing-braces on older compilers that warn even for
1329 # the "universal" C zero initializer {0}.
1330 cat > $TMPC << EOF
1331 struct {
1332   int a[2];
1333 } x = {0};
1334 EOF
1335 if compile_object "-Werror" "" ; then
1336   :
1337 else
1338   QEMU_CFLAGS="$QEMU_CFLAGS -Wno-missing-braces"
1339 fi
1340
1341 # Our module code doesn't support Windows
1342 if test "$modules" = "yes" && test "$mingw32" = "yes" ; then
1343   error_exit "Modules are not available for Windows"
1344 fi
1345
1346 # Static linking is not possible with plugins, modules or PIE
1347 if test "$static" = "yes" ; then
1348   if test "$modules" = "yes" ; then
1349     error_exit "static and modules are mutually incompatible"
1350   fi
1351   if test "$plugins" = "yes"; then
1352     error_exit "static and plugins are mutually incompatible"
1353   else
1354     plugins="no"
1355   fi
1356 fi
1357 test "$plugins" = "" && plugins=yes
1358
1359 cat > $TMPC << EOF
1360
1361 #ifdef __linux__
1362 #  define THREAD __thread
1363 #else
1364 #  define THREAD
1365 #endif
1366 static THREAD int tls_var;
1367 int main(void) { return tls_var; }
1368 EOF
1369
1370 if test "$static" = "yes"; then
1371   if test "$pie" != "no" && compile_prog "-Werror -fPIE -DPIE" "-static-pie"; then
1372     CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
1373     QEMU_LDFLAGS="-static-pie $QEMU_LDFLAGS"
1374     pie="yes"
1375   elif test "$pie" = "yes"; then
1376     error_exit "-static-pie not available due to missing toolchain support"
1377   else
1378     QEMU_LDFLAGS="-static $QEMU_LDFLAGS"
1379     pie="no"
1380   fi
1381 elif test "$pie" = "no"; then
1382   if compile_prog "-Werror -fno-pie" "-no-pie"; then
1383     CONFIGURE_CFLAGS="-fno-pie $CONFIGURE_CFLAGS"
1384     CONFIGURE_LDFLAGS="-no-pie $CONFIGURE_LDFLAGS"
1385   fi
1386 elif compile_prog "-Werror -fPIE -DPIE" "-pie"; then
1387   CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
1388   CONFIGURE_LDFLAGS="-pie $CONFIGURE_LDFLAGS"
1389   pie="yes"
1390 elif test "$pie" = "yes"; then
1391   error_exit "PIE not available due to missing toolchain support"
1392 else
1393   echo "Disabling PIE due to missing toolchain support"
1394   pie="no"
1395 fi
1396
1397 # Detect support for PT_GNU_RELRO + DT_BIND_NOW.
1398 # The combination is known as "full relro", because .got.plt is read-only too.
1399 if compile_prog "" "-Wl,-z,relro -Wl,-z,now" ; then
1400   QEMU_LDFLAGS="-Wl,-z,relro -Wl,-z,now $QEMU_LDFLAGS"
1401 fi
1402
1403 ##########################################
1404 # __sync_fetch_and_and requires at least -march=i486. Many toolchains
1405 # use i686 as default anyway, but for those that don't, an explicit
1406 # specification is necessary
1407
1408 if test "$cpu" = "i386"; then
1409   cat > $TMPC << EOF
1410 static int sfaa(int *ptr)
1411 {
1412   return __sync_fetch_and_and(ptr, 0);
1413 }
1414
1415 int main(void)
1416 {
1417   int val = 42;
1418   val = __sync_val_compare_and_swap(&val, 0, 1);
1419   sfaa(&val);
1420   return val;
1421 }
1422 EOF
1423   if ! compile_prog "" "" ; then
1424     QEMU_CFLAGS="-march=i486 $QEMU_CFLAGS"
1425   fi
1426 fi
1427
1428 if test -z "${target_list+xxx}" ; then
1429     default_targets=yes
1430     for target in $default_target_list; do
1431         target_list="$target_list $target"
1432     done
1433     target_list="${target_list# }"
1434 else
1435     default_targets=no
1436     target_list=$(echo "$target_list" | sed -e 's/,/ /g')
1437     for target in $target_list; do
1438         # Check that we recognised the target name; this allows a more
1439         # friendly error message than if we let it fall through.
1440         case " $default_target_list " in
1441             *" $target "*)
1442                 ;;
1443             *)
1444                 error_exit "Unknown target name '$target'"
1445                 ;;
1446         esac
1447     done
1448 fi
1449
1450 # see if system emulation was really requested
1451 case " $target_list " in
1452   *"-softmmu "*) softmmu=yes
1453   ;;
1454   *) softmmu=no
1455   ;;
1456 esac
1457
1458 if test "$tcg" = "auto"; then
1459   if test -z "$target_list"; then
1460     tcg="disabled"
1461   else
1462     tcg="enabled"
1463   fi
1464 fi
1465
1466 if test "$tcg" = "enabled"; then
1467     git_submodules="$git_submodules tests/fp/berkeley-testfloat-3"
1468     git_submodules="$git_submodules tests/fp/berkeley-softfloat-3"
1469 fi
1470
1471 feature_not_found() {
1472   feature=$1
1473   remedy=$2
1474
1475   error_exit "User requested feature $feature" \
1476       "configure was not able to find it." \
1477       "$remedy"
1478 }
1479
1480 # ---
1481 # big/little endian test
1482 cat > $TMPC << EOF
1483 #include <stdio.h>
1484 short big_endian[] = { 0x4269, 0x4765, 0x4e64, 0x4961, 0x4e00, 0, };
1485 short little_endian[] = { 0x694c, 0x7454, 0x654c, 0x6e45, 0x6944, 0x6e41, 0, };
1486 int main(int argc, char *argv[])
1487 {
1488     return printf("%s %s\n", (char *)big_endian, (char *)little_endian);
1489 }
1490 EOF
1491
1492 if compile_prog ; then
1493     if strings -a $TMPE | grep -q BiGeNdIaN ; then
1494         bigendian="yes"
1495     elif strings -a $TMPE | grep -q LiTtLeEnDiAn ; then
1496         bigendian="no"
1497     else
1498         echo big/little test failed
1499         exit 1
1500     fi
1501 else
1502     echo big/little test failed
1503     exit 1
1504 fi
1505
1506 ##########################################
1507 # pkg-config probe
1508
1509 if ! has "$pkg_config_exe"; then
1510   error_exit "pkg-config binary '$pkg_config_exe' not found"
1511 fi
1512
1513 ##########################################
1514 # glib support probe
1515
1516 # When bumping glib_req_ver, please check also whether we should increase
1517 # the _WIN32_WINNT setting in osdep.h according to the value from glib
1518 glib_req_ver=2.56
1519 glib_modules=gthread-2.0
1520 if test "$modules" = yes; then
1521     glib_modules="$glib_modules gmodule-export-2.0"
1522 elif test "$plugins" = "yes"; then
1523     glib_modules="$glib_modules gmodule-no-export-2.0"
1524 fi
1525
1526 for i in $glib_modules; do
1527     if $pkg_config --atleast-version=$glib_req_ver $i; then
1528         glib_cflags=$($pkg_config --cflags $i)
1529         glib_libs=$($pkg_config --libs $i)
1530     else
1531         error_exit "glib-$glib_req_ver $i is required to compile QEMU"
1532     fi
1533 done
1534
1535 glib_bindir="$($pkg_config --variable=bindir glib-2.0)"
1536 if test -z "$glib_bindir" ; then
1537         glib_bindir="$($pkg_config --variable=prefix glib-2.0)"/bin
1538 fi
1539
1540 # This workaround is required due to a bug in pkg-config file for glib as it
1541 # doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
1542
1543 if test "$static" = yes && test "$mingw32" = yes; then
1544     glib_cflags="-DGLIB_STATIC_COMPILATION $glib_cflags"
1545 fi
1546
1547 # Sanity check that the current size_t matches the
1548 # size that glib thinks it should be. This catches
1549 # problems on multi-arch where people try to build
1550 # 32-bit QEMU while pointing at 64-bit glib headers
1551 cat > $TMPC <<EOF
1552 #include <glib.h>
1553 #include <unistd.h>
1554
1555 #define QEMU_BUILD_BUG_ON(x) \
1556   typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
1557
1558 int main(void) {
1559    QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
1560    return 0;
1561 }
1562 EOF
1563
1564 if ! compile_prog "$glib_cflags" "$glib_libs" ; then
1565     error_exit "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T."\
1566                "You probably need to set PKG_CONFIG_LIBDIR"\
1567                "to point to the right pkg-config files for your"\
1568                "build target"
1569 fi
1570
1571 # Silence clang warnings triggered by glib < 2.57.2
1572 cat > $TMPC << EOF
1573 #include <glib.h>
1574 typedef struct Foo {
1575     int i;
1576 } Foo;
1577 static void foo_free(Foo *f)
1578 {
1579     g_free(f);
1580 }
1581 G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free)
1582 int main(void) { return 0; }
1583 EOF
1584 if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
1585     if cc_has_warning_flag "-Wno-unused-function"; then
1586         glib_cflags="$glib_cflags -Wno-unused-function"
1587         CONFIGURE_CFLAGS="$CONFIGURE_CFLAGS -Wno-unused-function"
1588     fi
1589 fi
1590
1591 ##########################################
1592 # fdt probe
1593
1594 case "$fdt" in
1595   auto | enabled | internal)
1596     # Simpler to always update submodule, even if not needed.
1597     git_submodules="${git_submodules} dtc"
1598     ;;
1599 esac
1600
1601 ##########################################
1602 # check and set a backend for coroutine
1603
1604 # We prefer ucontext, but it's not always possible. The fallback
1605 # is sigcontext. On Windows the only valid backend is the Windows
1606 # specific one.
1607
1608 ucontext_works=no
1609 if test "$darwin" != "yes"; then
1610   cat > $TMPC << EOF
1611 #include <ucontext.h>
1612 #ifdef __stub_makecontext
1613 #error Ignoring glibc stub makecontext which will always fail
1614 #endif
1615 int main(void) { makecontext(0, 0, 0); return 0; }
1616 EOF
1617   if compile_prog "" "" ; then
1618     ucontext_works=yes
1619   fi
1620 fi
1621
1622 if test "$coroutine" = ""; then
1623   if test "$mingw32" = "yes"; then
1624     coroutine=win32
1625   elif test "$ucontext_works" = "yes"; then
1626     coroutine=ucontext
1627   else
1628     coroutine=sigaltstack
1629   fi
1630 else
1631   case $coroutine in
1632   windows)
1633     if test "$mingw32" != "yes"; then
1634       error_exit "'windows' coroutine backend only valid for Windows"
1635     fi
1636     # Unfortunately the user visible backend name doesn't match the
1637     # coroutine-*.c filename for this case, so we have to adjust it here.
1638     coroutine=win32
1639     ;;
1640   ucontext)
1641     if test "$ucontext_works" != "yes"; then
1642       feature_not_found "ucontext"
1643     fi
1644     ;;
1645   sigaltstack)
1646     if test "$mingw32" = "yes"; then
1647       error_exit "only the 'windows' coroutine backend is valid for Windows"
1648     fi
1649     ;;
1650   *)
1651     error_exit "unknown coroutine backend $coroutine"
1652     ;;
1653   esac
1654 fi
1655
1656 ##################################################
1657 # SafeStack
1658
1659
1660 if test "$safe_stack" = "yes"; then
1661 cat > $TMPC << EOF
1662 int main(int argc, char *argv[])
1663 {
1664 #if ! __has_feature(safe_stack)
1665 #error SafeStack Disabled
1666 #endif
1667     return 0;
1668 }
1669 EOF
1670   flag="-fsanitize=safe-stack"
1671   # Check that safe-stack is supported and enabled.
1672   if compile_prog "-Werror $flag" "$flag"; then
1673     # Flag needed both at compilation and at linking
1674     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1675     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
1676   else
1677     error_exit "SafeStack not supported by your compiler"
1678   fi
1679   if test "$coroutine" != "ucontext"; then
1680     error_exit "SafeStack is only supported by the coroutine backend ucontext"
1681   fi
1682 else
1683 cat > $TMPC << EOF
1684 int main(int argc, char *argv[])
1685 {
1686 #if defined(__has_feature)
1687 #if __has_feature(safe_stack)
1688 #error SafeStack Enabled
1689 #endif
1690 #endif
1691     return 0;
1692 }
1693 EOF
1694 if test "$safe_stack" = "no"; then
1695   # Make sure that safe-stack is disabled
1696   if ! compile_prog "-Werror" ""; then
1697     # SafeStack was already enabled, try to explicitly remove the feature
1698     flag="-fno-sanitize=safe-stack"
1699     if ! compile_prog "-Werror $flag" "$flag"; then
1700       error_exit "Configure cannot disable SafeStack"
1701     fi
1702     QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1703     QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
1704   fi
1705 else # "$safe_stack" = ""
1706   # Set safe_stack to yes or no based on pre-existing flags
1707   if compile_prog "-Werror" ""; then
1708     safe_stack="no"
1709   else
1710     safe_stack="yes"
1711     if test "$coroutine" != "ucontext"; then
1712       error_exit "SafeStack is only supported by the coroutine backend ucontext"
1713     fi
1714   fi
1715 fi
1716 fi
1717
1718 ########################################
1719 # check if ccache is interfering with
1720 # semantic analysis of macros
1721
1722 unset CCACHE_CPP2
1723 ccache_cpp2=no
1724 cat > $TMPC << EOF
1725 static const int Z = 1;
1726 #define fn() ({ Z; })
1727 #define TAUT(X) ((X) == Z)
1728 #define PAREN(X, Y) (X == Y)
1729 #define ID(X) (X)
1730 int main(int argc, char *argv[])
1731 {
1732     int x = 0, y = 0;
1733     x = ID(x);
1734     x = fn();
1735     fn();
1736     if (PAREN(x, y)) return 0;
1737     if (TAUT(Z)) return 0;
1738     return 0;
1739 }
1740 EOF
1741
1742 if ! compile_object "-Werror"; then
1743     ccache_cpp2=yes
1744 fi
1745
1746 #################################################
1747 # clang does not support glibc + FORTIFY_SOURCE.
1748
1749 if test "$fortify_source" != "no"; then
1750   if echo | $cc -dM -E - | grep __clang__ > /dev/null 2>&1 ; then
1751     fortify_source="no";
1752   elif test -n "$cxx" && has $cxx &&
1753        echo | $cxx -dM -E - | grep __clang__ >/dev/null 2>&1 ; then
1754     fortify_source="no";
1755   else
1756     fortify_source="yes"
1757   fi
1758 fi
1759
1760 ##########################################
1761 # checks for sanitizers
1762
1763 have_asan=no
1764 have_ubsan=no
1765 have_asan_iface_h=no
1766 have_asan_iface_fiber=no
1767
1768 if test "$sanitizers" = "yes" ; then
1769   write_c_skeleton
1770   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" ""; then
1771       have_asan=yes
1772   fi
1773
1774   # we could use a simple skeleton for flags checks, but this also
1775   # detect the static linking issue of ubsan, see also:
1776   # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84285
1777   cat > $TMPC << EOF
1778 #include <stdlib.h>
1779 int main(void) {
1780     void *tmp = malloc(10);
1781     if (tmp != NULL) {
1782         return *(int *)(tmp + 2);
1783     }
1784     return 1;
1785 }
1786 EOF
1787   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=undefined" ""; then
1788       have_ubsan=yes
1789   fi
1790
1791   if check_include "sanitizer/asan_interface.h" ; then
1792       have_asan_iface_h=yes
1793   fi
1794
1795   cat > $TMPC << EOF
1796 #include <sanitizer/asan_interface.h>
1797 int main(void) {
1798   __sanitizer_start_switch_fiber(0, 0, 0);
1799   return 0;
1800 }
1801 EOF
1802   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" "" ; then
1803       have_asan_iface_fiber=yes
1804   fi
1805 fi
1806
1807 # Thread sanitizer is, for now, much noisier than the other sanitizers;
1808 # keep it separate until that is not the case.
1809 if test "$tsan" = "yes" && test "$sanitizers" = "yes"; then
1810   error_exit "TSAN is not supported with other sanitiziers."
1811 fi
1812 have_tsan=no
1813 have_tsan_iface_fiber=no
1814 if test "$tsan" = "yes" ; then
1815   write_c_skeleton
1816   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
1817       have_tsan=yes
1818   fi
1819   cat > $TMPC << EOF
1820 #include <sanitizer/tsan_interface.h>
1821 int main(void) {
1822   __tsan_create_fiber(0);
1823   return 0;
1824 }
1825 EOF
1826   if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
1827       have_tsan_iface_fiber=yes
1828   fi
1829 fi
1830
1831 ##########################################
1832 # check for slirp
1833
1834 case "$slirp" in
1835   auto | enabled | internal)
1836     # Simpler to always update submodule, even if not needed.
1837     git_submodules="${git_submodules} slirp"
1838     ;;
1839 esac
1840
1841 ##########################################
1842 # functions to probe cross compilers
1843
1844 container="no"
1845 if test $use_containers = "yes"; then
1846     if has "docker" || has "podman"; then
1847         container=$($python $source_path/tests/docker/docker.py probe)
1848     fi
1849 fi
1850
1851 # cross compilers defaults, can be overridden with --cross-cc-ARCH
1852 : ${cross_prefix_aarch64="aarch64-linux-gnu-"}
1853 : ${cross_prefix_aarch64_be="$cross_prefix_aarch64"}
1854 : ${cross_prefix_alpha="alpha-linux-gnu-"}
1855 : ${cross_prefix_arm="arm-linux-gnueabihf-"}
1856 : ${cross_prefix_armeb="$cross_prefix_arm"}
1857 : ${cross_prefix_hexagon="hexagon-unknown-linux-musl-"}
1858 : ${cross_prefix_loongarch64="loongarch64-unknown-linux-gnu-"}
1859 : ${cross_prefix_hppa="hppa-linux-gnu-"}
1860 : ${cross_prefix_i386="i686-linux-gnu-"}
1861 : ${cross_prefix_m68k="m68k-linux-gnu-"}
1862 : ${cross_prefix_microblaze="microblaze-linux-musl-"}
1863 : ${cross_prefix_mips64el="mips64el-linux-gnuabi64-"}
1864 : ${cross_prefix_mips64="mips64-linux-gnuabi64-"}
1865 : ${cross_prefix_mipsel="mipsel-linux-gnu-"}
1866 : ${cross_prefix_mips="mips-linux-gnu-"}
1867 : ${cross_prefix_nios2="nios2-linux-gnu-"}
1868 : ${cross_prefix_ppc="powerpc-linux-gnu-"}
1869 : ${cross_prefix_ppc64="powerpc64-linux-gnu-"}
1870 : ${cross_prefix_ppc64le="$cross_prefix_ppc64"}
1871 : ${cross_prefix_riscv64="riscv64-linux-gnu-"}
1872 : ${cross_prefix_s390x="s390x-linux-gnu-"}
1873 : ${cross_prefix_sh4="sh4-linux-gnu-"}
1874 : ${cross_prefix_sparc64="sparc64-linux-gnu-"}
1875 : ${cross_prefix_sparc="$cross_prefix_sparc64"}
1876 : ${cross_prefix_x86_64="x86_64-linux-gnu-"}
1877
1878 : ${cross_cc_aarch64_be="$cross_cc_aarch64"}
1879 : ${cross_cc_cflags_aarch64_be="-mbig-endian"}
1880 : ${cross_cc_armeb="$cross_cc_arm"}
1881 : ${cross_cc_cflags_armeb="-mbig-endian"}
1882 : ${cross_cc_hexagon="hexagon-unknown-linux-musl-clang"}
1883 : ${cross_cc_cflags_hexagon="-mv67 -O2 -static"}
1884 : ${cross_cc_cflags_i386="-m32"}
1885 : ${cross_cc_cflags_ppc="-m32 -mbig-endian"}
1886 : ${cross_cc_cflags_ppc64="-m64 -mbig-endian"}
1887 : ${cross_cc_ppc64le="$cross_cc_ppc64"}
1888 : ${cross_cc_cflags_ppc64le="-m64 -mlittle-endian"}
1889 : ${cross_cc_cflags_sparc64="-m64 -mcpu=ultrasparc"}
1890 : ${cross_cc_sparc="$cross_cc_sparc64"}
1891 : ${cross_cc_cflags_sparc="-m32 -mcpu=supersparc"}
1892 : ${cross_cc_cflags_x86_64="-m64"}
1893
1894 compute_target_variable() {
1895   eval "$2="
1896   if eval test -n "\"\${cross_prefix_$1}\""; then
1897     if eval has "\"\${cross_prefix_$1}\$3\""; then
1898       eval "$2=\"\${cross_prefix_$1}\$3\""
1899     fi
1900   fi
1901 }
1902
1903 # probe_target_compiler TARGET
1904 #
1905 # Look for a compiler for the given target, either native or cross.
1906 # Set variables target_* if a compiler is found, and container_cross_*
1907 # if a Docker-based cross-compiler image is known for the target.
1908 # Set got_cross_cc to yes/no depending on whether a non-container-based
1909 # compiler was found.
1910 #
1911 # If TARGET is a user-mode emulation target, also set build_static to
1912 # "y" if static linking is possible.
1913 #
1914 probe_target_compiler() {
1915   # reset all output variables
1916   got_cross_cc=no
1917   container_image=
1918   container_hosts=
1919   container_cross_cc=
1920   container_cross_ar=
1921   container_cross_as=
1922   container_cross_ld=
1923   container_cross_nm=
1924   container_cross_objcopy=
1925   container_cross_ranlib=
1926   container_cross_strip=
1927
1928   target_arch=${1%%-*}
1929   case $target_arch in
1930     aarch64) container_hosts="x86_64 aarch64" ;;
1931     alpha) container_hosts=x86_64 ;;
1932     arm) container_hosts="x86_64 aarch64" ;;
1933     cris) container_hosts=x86_64 ;;
1934     hexagon) container_hosts=x86_64 ;;
1935     hppa) container_hosts=x86_64 ;;
1936     i386) container_hosts=x86_64 ;;
1937     loongarch64) container_hosts=x86_64 ;;
1938     m68k) container_hosts=x86_64 ;;
1939     microblaze) container_hosts=x86_64 ;;
1940     mips64el) container_hosts=x86_64 ;;
1941     mips64) container_hosts=x86_64 ;;
1942     mipsel) container_hosts=x86_64 ;;
1943     mips) container_hosts=x86_64 ;;
1944     nios2) container_hosts=x86_64 ;;
1945     ppc) container_hosts=x86_64 ;;
1946     ppc64|ppc64le) container_hosts=x86_64 ;;
1947     riscv64) container_hosts=x86_64 ;;
1948     s390x) container_hosts=x86_64 ;;
1949     sh4) container_hosts=x86_64 ;;
1950     sparc64) container_hosts=x86_64 ;;
1951     tricore) container_hosts=x86_64 ;;
1952     x86_64) container_hosts="aarch64 ppc64el x86_64" ;;
1953     xtensa*) container_hosts=x86_64 ;;
1954   esac
1955
1956   for host in $container_hosts; do
1957     test "$container" != no || continue
1958     test "$host" = "$cpu" || continue
1959     case $target_arch in
1960       aarch64)
1961         # We don't have any bigendian build tools so we only use this for AArch64
1962         container_image=debian-arm64-cross
1963         container_cross_prefix=aarch64-linux-gnu-
1964         container_cross_cc=${container_cross_prefix}gcc-10
1965         ;;
1966       alpha)
1967         container_image=debian-alpha-cross
1968         container_cross_prefix=alpha-linux-gnu-
1969         ;;
1970       arm)
1971         # We don't have any bigendian build tools so we only use this for ARM
1972         container_image=debian-armhf-cross
1973         container_cross_prefix=arm-linux-gnueabihf-
1974         ;;
1975       cris)
1976         container_image=fedora-cris-cross
1977         container_cross_prefix=cris-linux-gnu-
1978         ;;
1979       hexagon)
1980         container_image=debian-hexagon-cross
1981         container_cross_prefix=hexagon-unknown-linux-musl-
1982         container_cross_cc=${container_cross_prefix}clang
1983         ;;
1984       hppa)
1985         container_image=debian-hppa-cross
1986         container_cross_prefix=hppa-linux-gnu-
1987         ;;
1988       i386)
1989         container_image=fedora-i386-cross
1990         container_cross_prefix=
1991         ;;
1992       loongarch64)
1993         container_image=debian-loongarch-cross
1994         container_cross_prefix=loongarch64-unknown-linux-gnu-
1995         ;;
1996       m68k)
1997         container_image=debian-m68k-cross
1998         container_cross_prefix=m68k-linux-gnu-
1999         ;;
2000       microblaze)
2001         container_image=debian-microblaze-cross
2002         container_cross_prefix=microblaze-linux-musl-
2003         ;;
2004       mips64el)
2005         container_image=debian-mips64el-cross
2006         container_cross_prefix=mips64el-linux-gnuabi64-
2007         ;;
2008       mips64)
2009         container_image=debian-mips64-cross
2010         container_cross_prefix=mips64-linux-gnuabi64-
2011         ;;
2012       mipsel)
2013         container_image=debian-mipsel-cross
2014         container_cross_prefix=mipsel-linux-gnu-
2015         ;;
2016       mips)
2017         container_image=debian-mips-cross
2018         container_cross_prefix=mips-linux-gnu-
2019         ;;
2020       nios2)
2021         container_image=debian-nios2-cross
2022         container_cross_prefix=nios2-linux-gnu-
2023         ;;
2024       ppc)
2025         container_image=debian-powerpc-test-cross
2026         container_cross_prefix=powerpc-linux-gnu-
2027         container_cross_cc=${container_cross_prefix}gcc-10
2028         ;;
2029       ppc64|ppc64le)
2030         container_image=debian-powerpc-test-cross
2031         container_cross_prefix=powerpc${target_arch#ppc}-linux-gnu-
2032         container_cross_cc=${container_cross_prefix}gcc-10
2033         ;;
2034       riscv64)
2035         container_image=debian-riscv64-test-cross
2036         container_cross_prefix=riscv64-linux-gnu-
2037         ;;
2038       s390x)
2039         container_image=debian-s390x-cross
2040         container_cross_prefix=s390x-linux-gnu-
2041         ;;
2042       sh4)
2043         container_image=debian-sh4-cross
2044         container_cross_prefix=sh4-linux-gnu-
2045         ;;
2046       sparc64)
2047         container_image=debian-sparc64-cross
2048         container_cross_prefix=sparc64-linux-gnu-
2049         ;;
2050       tricore)
2051         container_image=debian-tricore-cross
2052         container_cross_prefix=tricore-
2053         container_cross_as=tricore-as
2054         container_cross_ld=tricore-ld
2055         break
2056         ;;
2057       x86_64)
2058         container_image=debian-amd64-cross
2059         container_cross_prefix=x86_64-linux-gnu-
2060         ;;
2061       xtensa*)
2062         container_hosts=x86_64
2063         container_image=debian-xtensa-cross
2064
2065         # default to the dc232b cpu
2066         container_cross_prefix=/opt/2020.07/xtensa-dc232b-elf/bin/xtensa-dc232b-elf-
2067         ;;
2068     esac
2069     : ${container_cross_cc:=${container_cross_prefix}gcc}
2070     : ${container_cross_ar:=${container_cross_prefix}ar}
2071     : ${container_cross_as:=${container_cross_prefix}as}
2072     : ${container_cross_ld:=${container_cross_prefix}ld}
2073     : ${container_cross_nm:=${container_cross_prefix}nm}
2074     : ${container_cross_objcopy:=${container_cross_prefix}objcopy}
2075     : ${container_cross_ranlib:=${container_cross_prefix}ranlib}
2076     : ${container_cross_strip:=${container_cross_prefix}strip}
2077   done
2078
2079   local t try
2080   try=cross
2081   case "$target_arch:$cpu" in
2082     aarch64_be:aarch64 | \
2083     armeb:arm | \
2084     i386:x86_64 | \
2085     mips*:mips64 | \
2086     ppc*:ppc64 | \
2087     sparc:sparc64 | \
2088     "$cpu:$cpu")
2089       try='native cross' ;;
2090   esac
2091   eval "target_cflags=\${cross_cc_cflags_$target_arch}"
2092   for t in $try; do
2093     case $t in
2094     native)
2095       target_cc=$cc
2096       target_ccas=$ccas
2097       target_ar=$ar
2098       target_as=$as
2099       target_ld=$ld
2100       target_nm=$nm
2101       target_objcopy=$objcopy
2102       target_ranlib=$ranlib
2103       target_strip=$strip
2104       ;;
2105     cross)
2106       target_cc=
2107       if eval test -n "\"\${cross_cc_$target_arch}\""; then
2108         if eval has "\"\${cross_cc_$target_arch}\""; then
2109           eval "target_cc=\"\${cross_cc_$target_arch}\""
2110         fi
2111       else
2112         compute_target_variable $target_arch target_cc gcc
2113       fi
2114       target_ccas=$target_cc
2115       compute_target_variable $target_arch target_ar ar
2116       compute_target_variable $target_arch target_as as
2117       compute_target_variable $target_arch target_ld ld
2118       compute_target_variable $target_arch target_nm nm
2119       compute_target_variable $target_arch target_objcopy objcopy
2120       compute_target_variable $target_arch target_ranlib ranlib
2121       compute_target_variable $target_arch target_strip strip
2122       ;;
2123     esac
2124
2125     if test -n "$target_cc"; then
2126       case $target_arch in
2127         i386|x86_64)
2128           if $target_cc --version | grep -qi "clang"; then
2129             continue
2130           fi
2131           ;;
2132       esac
2133     elif test -n "$target_as" && test -n "$target_ld"; then
2134       # Special handling for assembler only targets
2135       case $target in
2136         tricore-softmmu)
2137           build_static=
2138           got_cross_cc=yes
2139           break
2140           ;;
2141         *)
2142           continue
2143           ;;
2144       esac
2145     else
2146       continue
2147     fi
2148
2149     write_c_skeleton
2150     case $1 in
2151       *-softmmu)
2152         if do_compiler "$target_cc" $target_cflags -o $TMPO -c $TMPC &&
2153           do_compiler "$target_cc" $target_cflags -r -nostdlib -o "${TMPDIR1}/${TMPB}2.o" "$TMPO" -lgcc; then
2154           got_cross_cc=yes
2155           break
2156         fi
2157         ;;
2158       *)
2159         if do_compiler "$target_cc" $target_cflags -o $TMPE $TMPC -static ; then
2160           build_static=y
2161           got_cross_cc=yes
2162           break
2163         fi
2164         if do_compiler "$target_cc" $target_cflags -o $TMPE $TMPC ; then
2165           build_static=
2166           got_cross_cc=yes
2167           break
2168         fi
2169         ;;
2170     esac
2171   done
2172   if test $got_cross_cc != yes; then
2173     build_static=
2174     target_cc=
2175     target_ccas=
2176     target_cflags=
2177     target_ar=
2178     target_as=
2179     target_ld=
2180     target_nm=
2181     target_objcopy=
2182     target_ranlib=
2183     target_strip=
2184   fi
2185 }
2186
2187 write_target_makefile() {
2188   echo "EXTRA_CFLAGS=$target_cflags"
2189   if test -n "$target_cc"; then
2190     echo "CC=$target_cc"
2191     echo "CCAS=$target_ccas"
2192   fi
2193   if test -n "$target_ar"; then
2194     echo "AR=$target_ar"
2195   fi
2196   if test -n "$target_as"; then
2197     echo "AS=$target_as"
2198   fi
2199   if test -n "$target_ld"; then
2200     echo "LD=$target_ld"
2201   fi
2202   if test -n "$target_nm"; then
2203     echo "NM=$target_nm"
2204   fi
2205   if test -n "$target_objcopy"; then
2206     echo "OBJCOPY=$target_objcopy"
2207   fi
2208   if test -n "$target_ranlib"; then
2209     echo "RANLIB=$target_ranlib"
2210   fi
2211   if test -n "$target_strip"; then
2212     echo "STRIP=$target_strip"
2213   fi
2214 }
2215
2216 write_container_target_makefile() {
2217   echo "EXTRA_CFLAGS=$target_cflags"
2218   if test -n "$container_cross_cc"; then
2219     echo "CC=\$(DOCKER_SCRIPT) cc --cc $container_cross_cc -i qemu/$container_image -s $source_path --"
2220     echo "CCAS=\$(DOCKER_SCRIPT) cc --cc $container_cross_cc -i qemu/$container_image -s $source_path --"
2221   fi
2222   echo "AR=\$(DOCKER_SCRIPT) cc --cc $container_cross_ar -i qemu/$container_image -s $source_path --"
2223   echo "AS=\$(DOCKER_SCRIPT) cc --cc $container_cross_as -i qemu/$container_image -s $source_path --"
2224   echo "LD=\$(DOCKER_SCRIPT) cc --cc $container_cross_ld -i qemu/$container_image -s $source_path --"
2225   echo "NM=\$(DOCKER_SCRIPT) cc --cc $container_cross_nm -i qemu/$container_image -s $source_path --"
2226   echo "OBJCOPY=\$(DOCKER_SCRIPT) cc --cc $container_cross_objcopy -i qemu/$container_image -s $source_path --"
2227   echo "RANLIB=\$(DOCKER_SCRIPT) cc --cc $container_cross_ranlib -i qemu/$container_image -s $source_path --"
2228   echo "STRIP=\$(DOCKER_SCRIPT) cc --cc $container_cross_strip -i qemu/$container_image -s $source_path --"
2229 }
2230
2231
2232
2233 ##########################################
2234 # check for vfio_user_server
2235
2236 case "$vfio_user_server" in
2237   enabled )
2238     if test "$git_submodules_action" != "ignore"; then
2239       git_submodules="${git_submodules} subprojects/libvfio-user"
2240     fi
2241     ;;
2242 esac
2243
2244 ##########################################
2245 # End of CC checks
2246 # After here, no more $cc or $ld runs
2247
2248 write_c_skeleton
2249
2250 if test "$fortify_source" = "yes" ; then
2251   QEMU_CFLAGS="-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $QEMU_CFLAGS"
2252 fi
2253
2254 if test "$have_asan" = "yes"; then
2255   QEMU_CFLAGS="-fsanitize=address $QEMU_CFLAGS"
2256   QEMU_LDFLAGS="-fsanitize=address $QEMU_LDFLAGS"
2257   if test "$have_asan_iface_h" = "no" ; then
2258       echo "ASAN build enabled, but ASAN header missing." \
2259            "Without code annotation, the report may be inferior."
2260   elif test "$have_asan_iface_fiber" = "no" ; then
2261       echo "ASAN build enabled, but ASAN header is too old." \
2262            "Without code annotation, the report may be inferior."
2263   fi
2264 fi
2265 if test "$have_tsan" = "yes" ; then
2266   if test "$have_tsan_iface_fiber" = "yes" ; then
2267     QEMU_CFLAGS="-fsanitize=thread $QEMU_CFLAGS"
2268     QEMU_LDFLAGS="-fsanitize=thread $QEMU_LDFLAGS"
2269   else
2270     error_exit "Cannot enable TSAN due to missing fiber annotation interface."
2271   fi
2272 elif test "$tsan" = "yes" ; then
2273   error_exit "Cannot enable TSAN due to missing sanitize thread interface."
2274 fi
2275 if test "$have_ubsan" = "yes"; then
2276   QEMU_CFLAGS="-fsanitize=undefined $QEMU_CFLAGS"
2277   QEMU_LDFLAGS="-fsanitize=undefined $QEMU_LDFLAGS"
2278 fi
2279
2280 ##########################################
2281
2282 # Exclude --warn-common with TSan to suppress warnings from the TSan libraries.
2283 if test "$solaris" = "no" && test "$tsan" = "no"; then
2284     if $ld --version 2>/dev/null | grep "GNU ld" >/dev/null 2>/dev/null ; then
2285         QEMU_LDFLAGS="-Wl,--warn-common $QEMU_LDFLAGS"
2286     fi
2287 fi
2288
2289 # Guest agent Windows MSI package
2290
2291 if test "$QEMU_GA_MANUFACTURER" = ""; then
2292   QEMU_GA_MANUFACTURER=QEMU
2293 fi
2294 if test "$QEMU_GA_DISTRO" = ""; then
2295   QEMU_GA_DISTRO=Linux
2296 fi
2297 if test "$QEMU_GA_VERSION" = ""; then
2298     QEMU_GA_VERSION=$(cat $source_path/VERSION)
2299 fi
2300
2301
2302 #######################################
2303 # cross-compiled firmware targets
2304
2305 # Set up build tree symlinks that point back into the source tree
2306 # (these can be both files and directories).
2307 # Caution: avoid adding files or directories here using wildcards. This
2308 # will result in problems later if a new file matching the wildcard is
2309 # added to the source tree -- nothing will cause configure to be rerun
2310 # so the build tree will be missing the link back to the new file, and
2311 # tests might fail. Prefer to keep the relevant files in their own
2312 # directory and symlink the directory instead.
2313 LINKS="Makefile"
2314 LINKS="$LINKS tests/tcg/Makefile.target"
2315 LINKS="$LINKS pc-bios/optionrom/Makefile"
2316 LINKS="$LINKS pc-bios/s390-ccw/Makefile"
2317 LINKS="$LINKS pc-bios/vof/Makefile"
2318 LINKS="$LINKS .gdbinit scripts" # scripts needed by relative path in .gdbinit
2319 LINKS="$LINKS tests/avocado tests/data"
2320 LINKS="$LINKS tests/qemu-iotests/check"
2321 LINKS="$LINKS python"
2322 LINKS="$LINKS contrib/plugins/Makefile "
2323 for f in $LINKS ; do
2324     if [ -e "$source_path/$f" ]; then
2325         mkdir -p `dirname ./$f`
2326         symlink "$source_path/$f" "$f"
2327     fi
2328 done
2329
2330 # Mac OS X ships with a broken assembler
2331 roms=
2332 probe_target_compiler i386-softmmu
2333 if test -n "$target_cc" &&
2334         test "$targetos" != "darwin" && test "$targetos" != "sunos" && \
2335         test "$targetos" != "haiku" && test "$softmmu" = yes ; then
2336     # Different host OS linkers have different ideas about the name of the ELF
2337     # emulation. Linux and OpenBSD/amd64 use 'elf_i386'; FreeBSD uses the _fbsd
2338     # variant; OpenBSD/i386 uses the _obsd variant; and Windows uses i386pe.
2339     for emu in elf_i386 elf_i386_fbsd elf_i386_obsd i386pe; do
2340         if "$target_ld" -verbose 2>&1 | grep -q "^[[:space:]]*${emu}[[:space:]]*$"; then
2341             ld_i386_emulation="$emu"
2342             break
2343         fi
2344     done
2345     if test -n "$ld_i386_emulation"; then
2346         roms="pc-bios/optionrom"
2347         config_mak=pc-bios/optionrom/config.mak
2348         echo "# Automatically generated by configure - do not modify" > $config_mak
2349         echo "TOPSRC_DIR=$source_path" >> $config_mak
2350         echo "LD_I386_EMULATION=$ld_i386_emulation" >> $config_mak
2351         write_target_makefile >> $config_mak
2352     fi
2353 fi
2354
2355 probe_target_compiler ppc-softmmu
2356 if test -n "$target_cc" && test "$softmmu" = yes; then
2357     roms="$roms pc-bios/vof"
2358     config_mak=pc-bios/vof/config.mak
2359     echo "# Automatically generated by configure - do not modify" > $config_mak
2360     echo "SRC_DIR=$source_path/pc-bios/vof" >> $config_mak
2361     write_target_makefile >> $config_mak
2362 fi
2363
2364 # Only build s390-ccw bios if the compiler has -march=z900 or -march=z10
2365 # (which is the lowest architecture level that Clang supports)
2366 probe_target_compiler s390x-softmmu
2367 if test -n "$target_cc" && test "$softmmu" = yes; then
2368   write_c_skeleton
2369   do_compiler "$target_cc" $target_cc_cflags -march=z900 -o $TMPO -c $TMPC
2370   has_z900=$?
2371   if [ $has_z900 = 0 ] || do_compiler "$target_cc" $target_cc_cflags -march=z10 -msoft-float -Werror -o $TMPO -c $TMPC; then
2372     if [ $has_z900 != 0 ]; then
2373       echo "WARNING: Your compiler does not support the z900!"
2374       echo "         The s390-ccw bios will only work with guest CPUs >= z10."
2375     fi
2376     roms="$roms pc-bios/s390-ccw"
2377     config_mak=pc-bios/s390-ccw/config-host.mak
2378     echo "# Automatically generated by configure - do not modify" > $config_mak
2379     echo "SRC_PATH=$source_path/pc-bios/s390-ccw" >> $config_mak
2380     write_target_makefile >> $config_mak
2381     # SLOF is required for building the s390-ccw firmware on s390x,
2382     # since it is using the libnet code from SLOF for network booting.
2383     git_submodules="${git_submodules} roms/SLOF"
2384   fi
2385 fi
2386
2387 #######################################
2388 # generate config-host.mak
2389
2390 # Check that the C++ compiler exists and works with the C compiler.
2391 # All the QEMU_CXXFLAGS are based on QEMU_CFLAGS. Keep this at the end to don't miss any other that could be added.
2392 if has $cxx; then
2393     cat > $TMPC <<EOF
2394 int c_function(void);
2395 int main(void) { return c_function(); }
2396 EOF
2397
2398     compile_object
2399
2400     cat > $TMPCXX <<EOF
2401 extern "C" {
2402    int c_function(void);
2403 }
2404 int c_function(void) { return 42; }
2405 EOF
2406
2407     update_cxxflags
2408
2409     if do_cxx $CXXFLAGS $EXTRA_CXXFLAGS $CONFIGURE_CXXFLAGS $QEMU_CXXFLAGS -o $TMPE $TMPCXX $TMPO $QEMU_LDFLAGS; then
2410         # C++ compiler $cxx works ok with C compiler $cc
2411         :
2412     else
2413         echo "C++ compiler $cxx does not work with C compiler $cc"
2414         echo "Disabling C++ specific optional code"
2415         cxx=
2416     fi
2417 else
2418     echo "No C++ compiler available; disabling C++ specific optional code"
2419     cxx=
2420 fi
2421
2422 if ! (GIT="$git" "$source_path/scripts/git-submodule.sh" "$git_submodules_action" "$git_submodules"); then
2423     exit 1
2424 fi
2425
2426 config_host_mak="config-host.mak"
2427
2428 echo "# Automatically generated by configure - do not modify" > $config_host_mak
2429 echo >> $config_host_mak
2430
2431 echo all: >> $config_host_mak
2432 echo "GIT=$git" >> $config_host_mak
2433 echo "GIT_SUBMODULES=$git_submodules" >> $config_host_mak
2434 echo "GIT_SUBMODULES_ACTION=$git_submodules_action" >> $config_host_mak
2435
2436 if test "$debug_tcg" = "yes" ; then
2437   echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
2438 fi
2439 if test "$mingw32" = "yes" ; then
2440   echo "CONFIG_WIN32=y" >> $config_host_mak
2441   echo "QEMU_GA_MANUFACTURER=${QEMU_GA_MANUFACTURER}" >> $config_host_mak
2442   echo "QEMU_GA_DISTRO=${QEMU_GA_DISTRO}" >> $config_host_mak
2443   echo "QEMU_GA_VERSION=${QEMU_GA_VERSION}" >> $config_host_mak
2444 else
2445   echo "CONFIG_POSIX=y" >> $config_host_mak
2446 fi
2447
2448 if test "$linux" = "yes" ; then
2449   echo "CONFIG_LINUX=y" >> $config_host_mak
2450 fi
2451
2452 if test "$darwin" = "yes" ; then
2453   echo "CONFIG_DARWIN=y" >> $config_host_mak
2454 fi
2455
2456 if test "$solaris" = "yes" ; then
2457   echo "CONFIG_SOLARIS=y" >> $config_host_mak
2458 fi
2459 if test "$static" = "yes" ; then
2460   echo "CONFIG_STATIC=y" >> $config_host_mak
2461 fi
2462 echo "SRC_PATH=$source_path" >> $config_host_mak
2463 echo "TARGET_DIRS=$target_list" >> $config_host_mak
2464 if test "$modules" = "yes"; then
2465   echo "CONFIG_MODULES=y" >> $config_host_mak
2466 fi
2467
2468 # XXX: suppress that
2469 if [ "$bsd" = "yes" ] ; then
2470   echo "CONFIG_BSD=y" >> $config_host_mak
2471 fi
2472
2473 echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
2474
2475 if test "$have_asan_iface_fiber" = "yes" ; then
2476     echo "CONFIG_ASAN_IFACE_FIBER=y" >> $config_host_mak
2477 fi
2478
2479 if test "$have_tsan" = "yes" && test "$have_tsan_iface_fiber" = "yes" ; then
2480     echo "CONFIG_TSAN=y" >> $config_host_mak
2481 fi
2482
2483 if test "$plugins" = "yes" ; then
2484     echo "CONFIG_PLUGIN=y" >> $config_host_mak
2485 fi
2486
2487 if test -n "$gdb_bin"; then
2488     gdb_version=$($gdb_bin --version | head -n 1)
2489     if version_ge ${gdb_version##* } 9.1; then
2490         echo "HAVE_GDB_BIN=$gdb_bin" >> $config_host_mak
2491     fi
2492 fi
2493
2494 echo "ROMS=$roms" >> $config_host_mak
2495 echo "MAKE=$make" >> $config_host_mak
2496 echo "PYTHON=$python" >> $config_host_mak
2497 echo "GENISOIMAGE=$genisoimage" >> $config_host_mak
2498 echo "MESON=$meson" >> $config_host_mak
2499 echo "NINJA=$ninja" >> $config_host_mak
2500 echo "CC=$cc" >> $config_host_mak
2501 echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak
2502 echo "QEMU_CXXFLAGS=$QEMU_CXXFLAGS" >> $config_host_mak
2503 echo "QEMU_OBJCFLAGS=$QEMU_OBJCFLAGS" >> $config_host_mak
2504 echo "GLIB_CFLAGS=$glib_cflags" >> $config_host_mak
2505 echo "GLIB_LIBS=$glib_libs" >> $config_host_mak
2506 echo "GLIB_BINDIR=$glib_bindir" >> $config_host_mak
2507 echo "GLIB_VERSION=$(pkg-config --modversion glib-2.0)" >> $config_host_mak
2508 echo "QEMU_LDFLAGS=$QEMU_LDFLAGS" >> $config_host_mak
2509 echo "EXESUF=$EXESUF" >> $config_host_mak
2510
2511 # use included Linux headers
2512 if test "$linux" = "yes" ; then
2513   mkdir -p linux-headers
2514   case "$cpu" in
2515   i386|x86_64)
2516     linux_arch=x86
2517     ;;
2518   ppc|ppc64)
2519     linux_arch=powerpc
2520     ;;
2521   s390x)
2522     linux_arch=s390
2523     ;;
2524   aarch64)
2525     linux_arch=arm64
2526     ;;
2527   loongarch*)
2528     linux_arch=loongarch
2529     ;;
2530   mips64)
2531     linux_arch=mips
2532     ;;
2533   *)
2534     # For most CPUs the kernel architecture name and QEMU CPU name match.
2535     linux_arch="$cpu"
2536     ;;
2537   esac
2538     # For non-KVM architectures we will not have asm headers
2539     if [ -e "$source_path/linux-headers/asm-$linux_arch" ]; then
2540       symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
2541     fi
2542 fi
2543
2544 for target in $target_list; do
2545     target_dir="$target"
2546     target_name=$(echo $target | cut -d '-' -f 1)$EXESUF
2547     mkdir -p $target_dir
2548     case $target in
2549         *-user) symlink "../qemu-$target_name" "$target_dir/qemu-$target_name" ;;
2550         *) symlink "../qemu-system-$target_name" "$target_dir/qemu-system-$target_name" ;;
2551     esac
2552 done
2553
2554 if test "$default_targets" = "yes"; then
2555   echo "CONFIG_DEFAULT_TARGETS=y" >> $config_host_mak
2556 fi
2557
2558 if test "$ccache_cpp2" = "yes"; then
2559   echo "export CCACHE_CPP2=y" >> $config_host_mak
2560 fi
2561
2562 if test "$safe_stack" = "yes"; then
2563   echo "CONFIG_SAFESTACK=y" >> $config_host_mak
2564 fi
2565
2566 # tests/tcg configuration
2567 (makefile=tests/tcg/Makefile.prereqs
2568 echo "# Automatically generated by configure - do not modify" > $makefile
2569
2570 config_host_mak=tests/tcg/config-host.mak
2571 echo "# Automatically generated by configure - do not modify" > $config_host_mak
2572 echo "SRC_PATH=$source_path" >> $config_host_mak
2573 echo "HOST_CC=$host_cc" >> $config_host_mak
2574
2575 tcg_tests_targets=
2576 for target in $target_list; do
2577   arch=${target%%-*}
2578
2579   config_target_mak=tests/tcg/config-$target.mak
2580
2581   echo "# Automatically generated by configure - do not modify" > $config_target_mak
2582   echo "TARGET_NAME=$arch" >> $config_target_mak
2583   case $target in
2584     xtensa*-linux-user)
2585       # the toolchain is not complete with headers, only build softmmu tests
2586       continue
2587       ;;
2588     *-softmmu)
2589       test -f $source_path/tests/tcg/$arch/Makefile.softmmu-target || continue
2590       qemu="qemu-system-$arch"
2591       ;;
2592     *-linux-user|*-bsd-user)
2593       qemu="qemu-$arch"
2594       ;;
2595   esac
2596
2597   probe_target_compiler $target
2598   if test $got_cross_cc = yes; then
2599       # Test for compiler features for optional tests. We only do this
2600       # for cross compilers because ensuring the docker containers based
2601       # compilers is a requirememt for adding a new test that needs a
2602       # compiler feature.
2603
2604       echo "BUILD_STATIC=$build_static" >> $config_target_mak
2605       write_target_makefile >> $config_target_mak
2606       case $target in
2607           aarch64-*)
2608               if do_compiler "$target_cc" $target_cflags \
2609                              -march=armv8.1-a+sve -o $TMPE $TMPC; then
2610                   echo "CROSS_CC_HAS_SVE=y" >> $config_target_mak
2611               fi
2612               if do_compiler "$target_cc" $target_cflags \
2613                              -march=armv8.1-a+sve2 -o $TMPE $TMPC; then
2614                   echo "CROSS_CC_HAS_SVE2=y" >> $config_target_mak
2615               fi
2616               if do_compiler "$target_cc" $target_cflags \
2617                              -march=armv8.3-a -o $TMPE $TMPC; then
2618                   echo "CROSS_CC_HAS_ARMV8_3=y" >> $config_target_mak
2619               fi
2620               if do_compiler "$target_cc" $target_cflags \
2621                              -mbranch-protection=standard -o $TMPE $TMPC; then
2622                   echo "CROSS_CC_HAS_ARMV8_BTI=y" >> $config_target_mak
2623               fi
2624               if do_compiler "$target_cc" $target_cflags \
2625                              -march=armv8.5-a+memtag -o $TMPE $TMPC; then
2626                   echo "CROSS_CC_HAS_ARMV8_MTE=y" >> $config_target_mak
2627               fi
2628               ;;
2629           ppc*)
2630               if do_compiler "$target_cc" $target_cflags \
2631                              -mpower8-vector -o $TMPE $TMPC; then
2632                   echo "CROSS_CC_HAS_POWER8_VECTOR=y" >> $config_target_mak
2633               fi
2634               if do_compiler "$target_cc" $target_cflags \
2635                              -mpower10 -o $TMPE $TMPC; then
2636                   echo "CROSS_CC_HAS_POWER10=y" >> $config_target_mak
2637               fi
2638               ;;
2639           i386-linux-user)
2640               if do_compiler "$target_cc" $target_cflags \
2641                              -Werror -fno-pie -o $TMPE $TMPC; then
2642                   echo "CROSS_CC_HAS_I386_NOPIE=y" >> $config_target_mak
2643               fi
2644               ;;
2645       esac
2646   elif test -n "$container_image"; then
2647       echo "build-tcg-tests-$target: docker-image-$container_image" >> $makefile
2648       echo "BUILD_STATIC=y" >> $config_target_mak
2649       write_container_target_makefile >> $config_target_mak
2650       case $target in
2651           aarch64-*)
2652               echo "CROSS_CC_HAS_SVE=y" >> $config_target_mak
2653               echo "CROSS_CC_HAS_SVE2=y" >> $config_target_mak
2654               echo "CROSS_CC_HAS_ARMV8_3=y" >> $config_target_mak
2655               echo "CROSS_CC_HAS_ARMV8_BTI=y" >> $config_target_mak
2656               echo "CROSS_CC_HAS_ARMV8_MTE=y" >> $config_target_mak
2657               ;;
2658           ppc*)
2659               echo "CROSS_CC_HAS_POWER8_VECTOR=y" >> $config_target_mak
2660               echo "CROSS_CC_HAS_POWER10=y" >> $config_target_mak
2661               ;;
2662           i386-linux-user)
2663               echo "CROSS_CC_HAS_I386_NOPIE=y" >> $config_target_mak
2664               ;;
2665       esac
2666       got_cross_cc=yes
2667   fi
2668   if test $got_cross_cc = yes; then
2669       mkdir -p tests/tcg/$target
2670       echo "QEMU=$PWD/$qemu" >> $config_target_mak
2671       echo "run-tcg-tests-$target: $qemu\$(EXESUF)" >> $makefile
2672       tcg_tests_targets="$tcg_tests_targets $target"
2673   fi
2674 done
2675 echo "TCG_TESTS_TARGETS=$tcg_tests_targets" >> $makefile)
2676
2677 if test "$skip_meson" = no; then
2678   cross="config-meson.cross.new"
2679   meson_quote() {
2680     test $# = 0 && return
2681     echo "'$(echo $* | sed "s/ /','/g")'"
2682   }
2683
2684   echo "# Automatically generated by configure - do not modify" > $cross
2685   echo "[properties]" >> $cross
2686
2687   # unroll any custom device configs
2688   for a in $device_archs; do
2689       eval "c=\$devices_${a}"
2690       echo "${a}-softmmu = '$c'" >> $cross
2691   done
2692
2693   test -z "$cxx" && echo "link_language = 'c'" >> $cross
2694   echo "[built-in options]" >> $cross
2695   echo "c_args = [$(meson_quote $CFLAGS $EXTRA_CFLAGS)]" >> $cross
2696   echo "cpp_args = [$(meson_quote $CXXFLAGS $EXTRA_CXXFLAGS)]" >> $cross
2697   test -n "$objcc" && echo "objc_args = [$(meson_quote $OBJCFLAGS $EXTRA_OBJCFLAGS)]" >> $cross
2698   echo "c_link_args = [$(meson_quote $CFLAGS $LDFLAGS $EXTRA_CFLAGS $EXTRA_LDFLAGS)]" >> $cross
2699   echo "cpp_link_args = [$(meson_quote $CXXFLAGS $LDFLAGS $EXTRA_CXXFLAGS $EXTRA_LDFLAGS)]" >> $cross
2700   echo "[binaries]" >> $cross
2701   echo "c = [$(meson_quote $cc $CPU_CFLAGS)]" >> $cross
2702   test -n "$cxx" && echo "cpp = [$(meson_quote $cxx $CPU_CFLAGS)]" >> $cross
2703   test -n "$objcc" && echo "objc = [$(meson_quote $objcc $CPU_CFLAGS)]" >> $cross
2704   echo "ar = [$(meson_quote $ar)]" >> $cross
2705   echo "nm = [$(meson_quote $nm)]" >> $cross
2706   echo "pkgconfig = [$(meson_quote $pkg_config_exe)]" >> $cross
2707   echo "ranlib = [$(meson_quote $ranlib)]" >> $cross
2708   if has $sdl2_config; then
2709     echo "sdl2-config = [$(meson_quote $sdl2_config)]" >> $cross
2710   fi
2711   echo "strip = [$(meson_quote $strip)]" >> $cross
2712   echo "widl = [$(meson_quote $widl)]" >> $cross
2713   echo "windres = [$(meson_quote $windres)]" >> $cross
2714   if test "$cross_compile" = "yes"; then
2715     cross_arg="--cross-file config-meson.cross"
2716     echo "[host_machine]" >> $cross
2717     echo "system = '$targetos'" >> $cross
2718     case "$cpu" in
2719         i386)
2720             echo "cpu_family = 'x86'" >> $cross
2721             ;;
2722         *)
2723             echo "cpu_family = '$cpu'" >> $cross
2724             ;;
2725     esac
2726     echo "cpu = '$cpu'" >> $cross
2727     if test "$bigendian" = "yes" ; then
2728         echo "endian = 'big'" >> $cross
2729     else
2730         echo "endian = 'little'" >> $cross
2731     fi
2732   else
2733     cross_arg="--native-file config-meson.cross"
2734   fi
2735   mv $cross config-meson.cross
2736
2737   rm -rf meson-private meson-info meson-logs
2738
2739   # Built-in options
2740   test "$bindir" != "bin" && meson_option_add "-Dbindir=$bindir"
2741   test "$default_feature" = no && meson_option_add -Dauto_features=disabled
2742   test "$pie" = no && meson_option_add -Db_pie=false
2743   test "$werror" = yes && meson_option_add -Dwerror=true
2744
2745   # QEMU options
2746   test "$cfi" != false && meson_option_add "-Dcfi=$cfi"
2747   test "$fdt" != auto && meson_option_add "-Dfdt=$fdt"
2748   test -n "${LIB_FUZZING_ENGINE+xxx}" && meson_option_add "-Dfuzzing_engine=$LIB_FUZZING_ENGINE"
2749   test "$qemu_suffix" != qemu && meson_option_add "-Dqemu_suffix=$qemu_suffix"
2750   test "$slirp" != auto && meson_option_add "-Dslirp=$slirp"
2751   test "$smbd" != '' && meson_option_add "-Dsmbd=$smbd"
2752   test "$tcg" != enabled && meson_option_add "-Dtcg=$tcg"
2753   test "$vfio_user_server" != auto && meson_option_add "-Dvfio_user_server=$vfio_user_server"
2754   run_meson() {
2755     NINJA=$ninja $meson setup --prefix "$prefix" "$@" $cross_arg "$PWD" "$source_path"
2756   }
2757   eval run_meson $meson_options
2758   if test "$?" -ne 0 ; then
2759       error_exit "meson setup failed"
2760   fi
2761 else
2762   if test -f meson-private/cmd_line.txt; then
2763     # Adjust old command line options whose type was changed
2764     # Avoids having to use "setup --wipe" when Meson is upgraded
2765     perl -i -ne '
2766       s/^gettext = true$/gettext = auto/;
2767       s/^gettext = false$/gettext = disabled/;
2768       /^b_staticpic/ && next;
2769       print;' meson-private/cmd_line.txt
2770   fi
2771 fi
2772
2773 # Save the configure command line for later reuse.
2774 cat <<EOD >config.status
2775 #!/bin/sh
2776 # Generated by configure.
2777 # Run this file to recreate the current configuration.
2778 # Compiler output produced by configure, useful for debugging
2779 # configure, is in config.log if it exists.
2780 EOD
2781
2782 preserve_env() {
2783     envname=$1
2784
2785     eval envval=\$$envname
2786
2787     if test -n "$envval"
2788     then
2789         echo "$envname='$envval'" >> config.status
2790         echo "export $envname" >> config.status
2791     else
2792         echo "unset $envname" >> config.status
2793     fi
2794 }
2795
2796 # Preserve various env variables that influence what
2797 # features/build target configure will detect
2798 preserve_env AR
2799 preserve_env AS
2800 preserve_env CC
2801 preserve_env CFLAGS
2802 preserve_env CXX
2803 preserve_env CXXFLAGS
2804 preserve_env LD
2805 preserve_env LDFLAGS
2806 preserve_env LD_LIBRARY_PATH
2807 preserve_env MAKE
2808 preserve_env NM
2809 preserve_env OBJCFLAGS
2810 preserve_env OBJCOPY
2811 preserve_env PATH
2812 preserve_env PKG_CONFIG
2813 preserve_env PKG_CONFIG_LIBDIR
2814 preserve_env PKG_CONFIG_PATH
2815 preserve_env PYTHON
2816 preserve_env SDL2_CONFIG
2817 preserve_env SMBD
2818 preserve_env STRIP
2819 preserve_env WIDL
2820 preserve_env WINDRES
2821
2822 printf "exec" >>config.status
2823 for i in "$0" "$@"; do
2824   test "$i" = --skip-meson || printf " %s" "$(quote_sh "$i")" >>config.status
2825 done
2826 echo ' "$@"' >>config.status
2827 chmod +x config.status
2828
2829 rm -r "$TMPDIR1"