xref: /openbmc/qemu/configure (revision d3860a57)
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.
8CLICOLOR_FORCE= GREP_OPTIONS=
9unset CLICOLOR_FORCE GREP_OPTIONS
10
11# Don't allow CCACHE, if present, to use cached results of compile tests!
12export CCACHE_RECACHE=yes
13
14# make source path absolute
15source_path=$(cd "$(dirname -- "$0")"; pwd)
16
17if test "$PWD" = "$source_path"
18then
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    if ! mkdir build || ! touch $MARKER
35    then
36        echo "ERROR: Could not create ./build directory. Check the permissions on"
37        echo "your source directory, or try doing an out-of-tree build."
38        exit 1
39    fi
40
41    cat > GNUmakefile <<'EOF'
42# This file is auto-generated by configure to support in-source tree
43# 'make' command invocation
44
45ifeq ($(MAKECMDGOALS),)
46recurse: all
47endif
48
49.NOTPARALLEL: %
50%: force
51	@echo 'changing dir to build for $(MAKE) "$(MAKECMDGOALS)"...'
52	@$(MAKE) -C build -f Makefile $(MAKECMDGOALS)
53	@if test "$(MAKECMDGOALS)" = "distclean" && \
54	    test -e build/auto-created-by-configure ; \
55	then \
56	    rm -rf build GNUmakefile ; \
57	fi
58force: ;
59.PHONY: force
60GNUmakefile: ;
61
62EOF
63    cd build
64    exec "$source_path/configure" "$@"
65fi
66
67# Temporary directory used for files created while
68# configure runs. Since it is in the build directory
69# we can safely blow away any previous version of it
70# (and we need not jump through hoops to try to delete
71# it when configure exits.)
72TMPDIR1="config-temp"
73rm -rf "${TMPDIR1}"
74if ! mkdir -p "${TMPDIR1}"; then
75    echo "ERROR: failed to create temporary directory"
76    exit 1
77fi
78
79TMPB="qemu-conf"
80TMPC="${TMPDIR1}/${TMPB}.c"
81TMPO="${TMPDIR1}/${TMPB}.o"
82TMPM="${TMPDIR1}/${TMPB}.m"
83TMPE="${TMPDIR1}/${TMPB}.exe"
84
85rm -f config.log
86
87# Print a helpful header at the top of config.log
88echo "# QEMU configure log $(date)" >> config.log
89printf "# Configured with:" >> config.log
90# repeat the invocation to log and stdout for CI
91invoke=$(printf " '%s'" "$0" "$@")
92test -n "$GITLAB_CI" && echo "configuring with: $invoke"
93{ echo "$invoke"; echo; echo "#"; } >> config.log
94
95quote_sh() {
96    printf "%s" "$1" | sed "s,','\\\\'',g; s,.*,'&',"
97}
98
99print_error() {
100    (echo
101    echo "ERROR: $1"
102    while test -n "$2"; do
103        echo "       $2"
104        shift
105    done
106    echo) >&2
107}
108
109error_exit() {
110    print_error "$@"
111    exit 1
112}
113
114do_compiler() {
115  # Run the compiler, capturing its output to the log. First argument
116  # is compiler binary to execute.
117  compiler="$1"
118  shift
119  if test -n "$BASH_VERSION"; then eval '
120      echo >>config.log "
121funcs: ${FUNCNAME[*]}
122lines: ${BASH_LINENO[*]}"
123  '; fi
124  echo $compiler "$@" >> config.log
125  $compiler "$@" >> config.log 2>&1 || return $?
126}
127
128do_compiler_werror() {
129    # Run the compiler, capturing its output to the log. First argument
130    # is compiler binary to execute.
131    compiler="$1"
132    shift
133    if test -n "$BASH_VERSION"; then eval '
134        echo >>config.log "
135funcs: ${FUNCNAME[*]}
136lines: ${BASH_LINENO[*]}"
137    '; fi
138    echo $compiler "$@" >> config.log
139    $compiler "$@" >> config.log 2>&1 || return $?
140    # Test passed. If this is an --enable-werror build, rerun
141    # the test with -Werror and bail out if it fails. This
142    # makes warning-generating-errors in configure test code
143    # obvious to developers.
144    if test "$werror" != "yes"; then
145        return 0
146    fi
147    # Don't bother rerunning the compile if we were already using -Werror
148    case "$*" in
149        *-Werror*)
150           return 0
151        ;;
152    esac
153    echo $compiler -Werror "$@" >> config.log
154    $compiler -Werror "$@" >> config.log 2>&1 && return $?
155    error_exit "configure test passed without -Werror but failed with -Werror." \
156        "This is probably a bug in the configure script. The failing command" \
157        "will be at the bottom of config.log." \
158        "You can run configure with --disable-werror to bypass this check."
159}
160
161do_cc() {
162    do_compiler_werror "$cc" $CPU_CFLAGS "$@"
163}
164
165do_objc() {
166    do_compiler_werror "$objcc" $CPU_CFLAGS "$@"
167}
168
169# Append $2 to the variable named $1, with space separation
170add_to() {
171    eval $1=\${$1:+\"\$$1 \"}\$2
172}
173
174compile_object() {
175  local_cflags="$1"
176  do_cc $CFLAGS $EXTRA_CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -c -o $TMPO $TMPC
177}
178
179compile_prog() {
180  local_cflags="$1"
181  local_ldflags="$2"
182  do_cc $CFLAGS $EXTRA_CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC \
183      $LDFLAGS $EXTRA_LDFLAGS $CONFIGURE_LDFLAGS $QEMU_LDFLAGS $local_ldflags
184}
185
186# symbolically link $1 to $2.  Portable version of "ln -sf".
187symlink() {
188  rm -rf "$2"
189  mkdir -p "$(dirname "$2")"
190  ln -s "$1" "$2"
191}
192
193# check whether a command is available to this shell (may be either an
194# executable or a builtin)
195has() {
196    type "$1" >/dev/null 2>&1
197}
198
199version_ge () {
200    local_ver1=$(expr "$1" : '\([0-9.]*\)' | tr . ' ')
201    local_ver2=$(echo "$2" | tr . ' ')
202    while true; do
203        set x $local_ver1
204        local_first=${2-0}
205        # 'shift 2' if $2 is set, or 'shift' if $2 is not set
206        shift ${2:+2}
207        local_ver1=$*
208        set x $local_ver2
209        # the second argument finished, the first must be greater or equal
210        test $# = 1 && return 0
211        test $local_first -lt $2 && return 1
212        test $local_first -gt $2 && return 0
213        shift ${2:+2}
214        local_ver2=$*
215    done
216}
217
218if printf %s\\n "$source_path" "$PWD" | grep -q "[[:space:]:]";
219then
220  error_exit "main directory cannot contain spaces nor colons"
221fi
222
223# default parameters
224cpu=""
225static="no"
226cross_compile="no"
227cross_prefix=""
228host_cc="cc"
229stack_protector=""
230safe_stack=""
231use_containers="yes"
232gdb_bin=$(command -v "gdb-multiarch" || command -v "gdb")
233
234if test -e "$source_path/.git"
235then
236    git_submodules_action="update"
237else
238    git_submodules_action="ignore"
239fi
240
241git_submodules="ui/keycodemapdb"
242git="git"
243
244# Don't accept a target_list environment variable.
245unset target_list
246unset target_list_exclude
247
248# Default value for a variable defining feature "foo".
249#  * foo="no"  feature will only be used if --enable-foo arg is given
250#  * foo=""    feature will be searched for, and if found, will be used
251#              unless --disable-foo is given
252#  * foo="yes" this value will only be set by --enable-foo flag.
253#              feature will searched for,
254#              if not found, configure exits with error
255#
256# Always add --enable-foo and --disable-foo command line args.
257# Distributions want to ensure that several features are compiled in, and it
258# is impossible without a --enable-foo that exits if a feature is not found.
259
260default_feature=""
261# parse CC options second
262for opt do
263  optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
264  case "$opt" in
265      --without-default-features)
266          default_feature="no"
267  ;;
268  esac
269done
270
271EXTRA_CFLAGS=""
272EXTRA_CXXFLAGS=""
273EXTRA_OBJCFLAGS=""
274EXTRA_LDFLAGS=""
275
276debug_tcg="no"
277sanitizers="no"
278tsan="no"
279fortify_source="yes"
280EXESUF=""
281modules="no"
282prefix="/usr/local"
283qemu_suffix="qemu"
284softmmu="yes"
285linux_user=""
286bsd_user=""
287pie=""
288coroutine=""
289plugins="$default_feature"
290meson=""
291ninja=""
292bindir="bin"
293skip_meson=no
294vfio_user_server="disabled"
295
296# The following Meson options are handled manually (still they
297# are included in the automatically generated help message)
298
299# 1. Track which submodules are needed
300fdt="auto"
301
302# 2. Automatically enable/disable other options
303tcg="auto"
304cfi="false"
305
306# parse CC options second
307for opt do
308  optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
309  case "$opt" in
310  --cross-prefix=*) cross_prefix="$optarg"
311                    cross_compile="yes"
312  ;;
313  --cc=*) CC="$optarg"
314  ;;
315  --cxx=*) CXX="$optarg"
316  ;;
317  --cpu=*) cpu="$optarg"
318  ;;
319  --extra-cflags=*)
320    EXTRA_CFLAGS="$EXTRA_CFLAGS $optarg"
321    EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
322    EXTRA_OBJCFLAGS="$EXTRA_OBJCFLAGS $optarg"
323    ;;
324  --extra-cxxflags=*) EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
325  ;;
326  --extra-objcflags=*) EXTRA_OBJCFLAGS="$EXTRA_OBJCFLAGS $optarg"
327  ;;
328  --extra-ldflags=*) EXTRA_LDFLAGS="$EXTRA_LDFLAGS $optarg"
329  ;;
330  --cross-cc-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-cc-FOO option"
331  ;;
332  --cross-cc-cflags-*) cc_arch=${opt#--cross-cc-cflags-}; cc_arch=${cc_arch%%=*}
333                      eval "cross_cc_cflags_${cc_arch}=\$optarg"
334  ;;
335  --cross-cc-*) cc_arch=${opt#--cross-cc-}; cc_arch=${cc_arch%%=*}
336                eval "cross_cc_${cc_arch}=\$optarg"
337  ;;
338  --cross-prefix-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-prefix-FOO option"
339  ;;
340  --cross-prefix-*) cc_arch=${opt#--cross-prefix-}; cc_arch=${cc_arch%%=*}
341                    eval "cross_prefix_${cc_arch}=\$optarg"
342  ;;
343  esac
344done
345
346# Preferred compiler:
347#  ${CC} (if set)
348#  ${cross_prefix}gcc (if cross-prefix specified)
349#  system compiler
350if test -z "${CC}${cross_prefix}"; then
351  cc="$host_cc"
352else
353  cc="${CC-${cross_prefix}gcc}"
354fi
355
356if test -z "${CXX}${cross_prefix}"; then
357  cxx="c++"
358else
359  cxx="${CXX-${cross_prefix}g++}"
360fi
361
362ar="${AR-${cross_prefix}ar}"
363as="${AS-${cross_prefix}as}"
364ccas="${CCAS-$cc}"
365objcopy="${OBJCOPY-${cross_prefix}objcopy}"
366ld="${LD-${cross_prefix}ld}"
367ranlib="${RANLIB-${cross_prefix}ranlib}"
368nm="${NM-${cross_prefix}nm}"
369smbd="$SMBD"
370strip="${STRIP-${cross_prefix}strip}"
371widl="${WIDL-${cross_prefix}widl}"
372windres="${WINDRES-${cross_prefix}windres}"
373windmc="${WINDMC-${cross_prefix}windmc}"
374pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
375query_pkg_config() {
376    "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
377}
378pkg_config=query_pkg_config
379sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"
380
381# default flags for all hosts
382# We use -fwrapv to tell the compiler that we require a C dialect where
383# left shift of signed integers is well defined and has the expected
384# 2s-complement style results. (Both clang and gcc agree that it
385# provides these semantics.)
386QEMU_CFLAGS="-fno-strict-aliasing -fno-common -fwrapv"
387QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
388
389QEMU_LDFLAGS=
390
391# Flags that are needed during configure but later taken care of by Meson
392CONFIGURE_CFLAGS="-std=gnu11 -Wall"
393CONFIGURE_LDFLAGS=
394
395
396check_define() {
397cat > $TMPC <<EOF
398#if !defined($1)
399#error $1 not defined
400#endif
401int main(void) { return 0; }
402EOF
403  compile_object
404}
405
406check_include() {
407cat > $TMPC <<EOF
408#include <$1>
409int main(void) { return 0; }
410EOF
411  compile_object
412}
413
414write_c_skeleton() {
415    cat > $TMPC <<EOF
416int main(void) { return 0; }
417EOF
418}
419
420if check_define __linux__ ; then
421  targetos=linux
422elif check_define _WIN32 ; then
423  targetos=windows
424elif check_define __OpenBSD__ ; then
425  targetos=openbsd
426elif check_define __sun__ ; then
427  targetos=sunos
428elif check_define __HAIKU__ ; then
429  targetos=haiku
430elif check_define __FreeBSD__ ; then
431  targetos=freebsd
432elif check_define __FreeBSD_kernel__ && check_define __GLIBC__; then
433  targetos=gnu/kfreebsd
434elif check_define __DragonFly__ ; then
435  targetos=dragonfly
436elif check_define __NetBSD__; then
437  targetos=netbsd
438elif check_define __APPLE__; then
439  targetos=darwin
440else
441  # This is a fatal error, but don't report it yet, because we
442  # might be going to just print the --help text, or it might
443  # be the result of a missing compiler.
444  targetos=bogus
445fi
446
447# OS specific
448
449mingw32="no"
450bsd="no"
451linux="no"
452solaris="no"
453case $targetos in
454windows)
455  mingw32="yes"
456  plugins="no"
457  pie="no"
458;;
459gnu/kfreebsd)
460  bsd="yes"
461;;
462freebsd)
463  bsd="yes"
464  make="${MAKE-gmake}"
465  # needed for kinfo_getvmmap(3) in libutil.h
466;;
467dragonfly)
468  bsd="yes"
469  make="${MAKE-gmake}"
470;;
471netbsd)
472  bsd="yes"
473  make="${MAKE-gmake}"
474;;
475openbsd)
476  bsd="yes"
477  make="${MAKE-gmake}"
478;;
479darwin)
480  bsd="yes"
481  darwin="yes"
482  # Disable attempts to use ObjectiveC features in os/object.h since they
483  # won't work when we're compiling with gcc as a C compiler.
484  QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
485;;
486sunos)
487  solaris="yes"
488  make="${MAKE-gmake}"
489# needed for CMSG_ macros in sys/socket.h
490  QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
491# needed for TIOCWIN* defines in termios.h
492  QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
493;;
494haiku)
495  pie="no"
496  QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -D_BSD_SOURCE -fPIC $QEMU_CFLAGS"
497;;
498linux)
499  linux="yes"
500;;
501esac
502
503if test ! -z "$cpu" ; then
504  # command line argument
505  :
506elif check_define __i386__ ; then
507  cpu="i386"
508elif check_define __x86_64__ ; then
509  if check_define __ILP32__ ; then
510    cpu="x32"
511  else
512    cpu="x86_64"
513  fi
514elif check_define __sparc__ ; then
515  if check_define __arch64__ ; then
516    cpu="sparc64"
517  else
518    cpu="sparc"
519  fi
520elif check_define _ARCH_PPC ; then
521  if check_define _ARCH_PPC64 ; then
522    if check_define _LITTLE_ENDIAN ; then
523      cpu="ppc64le"
524    else
525      cpu="ppc64"
526    fi
527  else
528    cpu="ppc"
529  fi
530elif check_define __mips__ ; then
531  cpu="mips"
532elif check_define __s390__ ; then
533  if check_define __s390x__ ; then
534    cpu="s390x"
535  else
536    cpu="s390"
537  fi
538elif check_define __riscv ; then
539  cpu="riscv"
540elif check_define __arm__ ; then
541  cpu="arm"
542elif check_define __aarch64__ ; then
543  cpu="aarch64"
544elif check_define __loongarch64 ; then
545  cpu="loongarch64"
546else
547  # Using uname is really broken, but it is just a fallback for architectures
548  # that are going to use TCI anyway
549  cpu=$(uname -m)
550  echo "WARNING: unrecognized host CPU, proceeding with 'uname -m' output '$cpu'"
551fi
552
553# Normalise host CPU name and set multilib cflags.  The canonicalization
554# isn't really necessary, because the architectures that we check for
555# should not hit the 'uname -m' case, but better safe than sorry.
556# Note that this case should only have supported host CPUs, not guests.
557case "$cpu" in
558  armv*b|armv*l|arm)
559    cpu="arm" ;;
560
561  i386|i486|i586|i686)
562    cpu="i386"
563    CPU_CFLAGS="-m32" ;;
564  x32)
565    cpu="x86_64"
566    CPU_CFLAGS="-mx32" ;;
567  x86_64|amd64)
568    cpu="x86_64"
569    # ??? Only extremely old AMD cpus do not have cmpxchg16b.
570    # If we truly care, we should simply detect this case at
571    # runtime and generate the fallback to serial emulation.
572    CPU_CFLAGS="-m64 -mcx16" ;;
573
574  mips*)
575    cpu="mips" ;;
576
577  ppc)
578    CPU_CFLAGS="-m32" ;;
579  ppc64)
580    CPU_CFLAGS="-m64 -mbig-endian" ;;
581  ppc64le)
582    cpu="ppc64"
583    CPU_CFLAGS="-m64 -mlittle-endian" ;;
584
585  s390)
586    CPU_CFLAGS="-m31" ;;
587  s390x)
588    CPU_CFLAGS="-m64" ;;
589
590  sparc|sun4[cdmuv])
591    cpu="sparc"
592    CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc" ;;
593  sparc64)
594    CPU_CFLAGS="-m64 -mcpu=ultrasparc" ;;
595esac
596
597: ${make=${MAKE-make}}
598
599
600check_py_version() {
601    # We require python >= 3.6.
602    # NB: a True python conditional creates a non-zero return code (Failure)
603    "$1" -c 'import sys; sys.exit(sys.version_info < (3,6))'
604}
605
606python=
607first_python=
608if test -z "${PYTHON}"; then
609    explicit_python=no
610    # A bare 'python' is traditionally python 2.x, but some distros
611    # have it as python 3.x, so check in both places.
612    for binary in python3 python python3.11 python3.10 python3.9 python3.8 python3.7 python3.6; do
613        if has "$binary"; then
614            python=$(command -v "$binary")
615            if check_py_version "$python"; then
616                # This one is good.
617                first_python=
618                break
619            else
620                first_python=$python
621            fi
622        fi
623    done
624else
625    # Same as above, but only check the environment variable.
626    has "${PYTHON}" || error_exit "The PYTHON environment variable does not point to an executable"
627    python=$(command -v "$PYTHON")
628    explicit_python=yes
629    if check_py_version "$python"; then
630        # This one is good.
631        first_python=
632    else
633        first_python=$first_python
634    fi
635fi
636
637# Check for ancillary tools used in testing
638genisoimage=
639for binary in genisoimage mkisofs
640do
641    if has $binary
642    then
643        genisoimage=$(command -v "$binary")
644        break
645    fi
646done
647
648# Default objcc to clang if available, otherwise use CC
649if has clang; then
650  objcc=clang
651else
652  objcc="$cc"
653fi
654
655if test "$mingw32" = "yes" ; then
656  EXESUF=".exe"
657  # MinGW needs -mthreads for TLS and macro _MT.
658  CONFIGURE_CFLAGS="-mthreads $CONFIGURE_CFLAGS"
659  prefix="/qemu"
660  bindir=""
661  qemu_suffix=""
662fi
663
664werror=""
665
666meson_option_build_array() {
667  printf '['
668  (if test "$targetos" = windows; then
669    IFS=\;
670  else
671    IFS=:
672  fi
673  for e in $1; do
674    printf '"""'
675    # backslash escape any '\' and '"' characters
676    printf "%s" "$e" | sed -e 's/\([\"]\)/\\\1/g'
677    printf '""",'
678  done)
679  printf ']\n'
680}
681
682. "$source_path/scripts/meson-buildoptions.sh"
683
684meson_options=
685meson_option_add() {
686  meson_options="$meson_options $(quote_sh "$1")"
687}
688meson_option_parse() {
689  meson_options="$meson_options $(_meson_option_parse "$@")"
690  if test $? -eq 1; then
691    echo "ERROR: unknown option $1"
692    echo "Try '$0 --help' for more information"
693    exit 1
694  fi
695}
696
697for opt do
698  optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
699  case "$opt" in
700  --help|-h) show_help=yes
701  ;;
702  --version|-V) exec cat "$source_path/VERSION"
703  ;;
704  --prefix=*) prefix="$optarg"
705  ;;
706  --cross-prefix=*)
707  ;;
708  --cc=*)
709  ;;
710  --host-cc=*) host_cc="$optarg"
711  ;;
712  --cxx=*)
713  ;;
714  --objcc=*) objcc="$optarg"
715  ;;
716  --make=*) make="$optarg"
717  ;;
718  --install=*)
719  ;;
720  --python=*) python="$optarg" ; explicit_python=yes
721  ;;
722  --skip-meson) skip_meson=yes
723  ;;
724  --meson=*) meson="$optarg"
725  ;;
726  --ninja=*) ninja="$optarg"
727  ;;
728  --smbd=*) smbd="$optarg"
729  ;;
730  --extra-cflags=*)
731  ;;
732  --extra-cxxflags=*)
733  ;;
734  --extra-objcflags=*)
735  ;;
736  --extra-ldflags=*)
737  ;;
738  --cross-cc-*)
739  ;;
740  --cross-prefix-*)
741  ;;
742  --enable-debug-info) meson_option_add -Ddebug=true
743  ;;
744  --disable-debug-info) meson_option_add -Ddebug=false
745  ;;
746  --enable-modules)
747      modules="yes"
748  ;;
749  --disable-modules)
750      modules="no"
751  ;;
752  --cpu=*)
753  ;;
754  --target-list=*) target_list="$optarg"
755                   if test "$target_list_exclude"; then
756                       error_exit "Can't mix --target-list with --target-list-exclude"
757                   fi
758  ;;
759  --target-list-exclude=*) target_list_exclude="$optarg"
760                   if test "$target_list"; then
761                       error_exit "Can't mix --target-list-exclude with --target-list"
762                   fi
763  ;;
764  --with-default-devices) meson_option_add -Ddefault_devices=true
765  ;;
766  --without-default-devices) meson_option_add -Ddefault_devices=false
767  ;;
768  --with-devices-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --with-devices-FOO option"
769  ;;
770  --with-devices-*) device_arch=${opt#--with-devices-};
771                    device_arch=${device_arch%%=*}
772                    cf=$source_path/configs/devices/$device_arch-softmmu/$optarg.mak
773                    if test -f "$cf"; then
774                        device_archs="$device_archs $device_arch"
775                        eval "devices_${device_arch}=\$optarg"
776                    else
777                        error_exit "File $cf does not exist"
778                    fi
779  ;;
780  --without-default-features) # processed above
781  ;;
782  --static)
783    static="yes"
784    QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
785  ;;
786  --bindir=*) bindir="$optarg"
787  ;;
788  --with-suffix=*) qemu_suffix="$optarg"
789  ;;
790  --host=*|--build=*|\
791  --disable-dependency-tracking|\
792  --sbindir=*|--sharedstatedir=*|\
793  --oldincludedir=*|--datarootdir=*|--infodir=*|\
794  --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
795    # These switches are silently ignored, for compatibility with
796    # autoconf-generated configure scripts. This allows QEMU's
797    # configure to be used by RPM and similar macros that set
798    # lots of directory switches by default.
799  ;;
800  --enable-debug-tcg) debug_tcg="yes"
801  ;;
802  --disable-debug-tcg) debug_tcg="no"
803  ;;
804  --enable-debug)
805      # Enable debugging options that aren't excessively noisy
806      debug_tcg="yes"
807      meson_option_parse --enable-debug-mutex ""
808      meson_option_add -Doptimization=0
809      fortify_source="no"
810  ;;
811  --enable-sanitizers) sanitizers="yes"
812  ;;
813  --disable-sanitizers) sanitizers="no"
814  ;;
815  --enable-tsan) tsan="yes"
816  ;;
817  --disable-tsan) tsan="no"
818  ;;
819  --disable-tcg) tcg="disabled"
820                 plugins="no"
821  ;;
822  --enable-tcg) tcg="enabled"
823  ;;
824  --disable-system) softmmu="no"
825  ;;
826  --enable-system) softmmu="yes"
827  ;;
828  --disable-user)
829      linux_user="no" ;
830      bsd_user="no" ;
831  ;;
832  --enable-user) ;;
833  --disable-linux-user) linux_user="no"
834  ;;
835  --enable-linux-user) linux_user="yes"
836  ;;
837  --disable-bsd-user) bsd_user="no"
838  ;;
839  --enable-bsd-user) bsd_user="yes"
840  ;;
841  --enable-pie) pie="yes"
842  ;;
843  --disable-pie) pie="no"
844  ;;
845  --enable-werror) werror="yes"
846  ;;
847  --disable-werror) werror="no"
848  ;;
849  --enable-stack-protector) stack_protector="yes"
850  ;;
851  --disable-stack-protector) stack_protector="no"
852  ;;
853  --enable-safe-stack) safe_stack="yes"
854  ;;
855  --disable-safe-stack) safe_stack="no"
856  ;;
857  --enable-cfi)
858      cfi="true";
859      meson_option_add -Db_lto=true
860  ;;
861  --disable-cfi) cfi="false"
862  ;;
863  --disable-fdt) fdt="disabled"
864  ;;
865  --enable-fdt) fdt="enabled"
866  ;;
867  --enable-fdt=git) fdt="internal"
868  ;;
869  --enable-fdt=*) fdt="$optarg"
870  ;;
871  --with-coroutine=*) coroutine="$optarg"
872  ;;
873  --with-git=*) git="$optarg"
874  ;;
875  --with-git-submodules=*)
876      git_submodules_action="$optarg"
877  ;;
878  --enable-plugins) if test "$mingw32" = "yes"; then
879                        error_exit "TCG plugins not currently supported on Windows platforms"
880                    else
881                        plugins="yes"
882                    fi
883  ;;
884  --disable-plugins) plugins="no"
885  ;;
886  --enable-containers) use_containers="yes"
887  ;;
888  --disable-containers) use_containers="no"
889  ;;
890  --gdb=*) gdb_bin="$optarg"
891  ;;
892  --enable-vfio-user-server) vfio_user_server="enabled"
893  ;;
894  --disable-vfio-user-server) vfio_user_server="disabled"
895  ;;
896  # everything else has the same name in configure and meson
897  --*) meson_option_parse "$opt" "$optarg"
898  ;;
899  esac
900done
901
902# test for any invalid configuration combinations
903if test "$plugins" = "yes" -a "$tcg" = "disabled"; then
904    error_exit "Can't enable plugins on non-TCG builds"
905fi
906
907case $git_submodules_action in
908    update|validate)
909        if test ! -e "$source_path/.git"; then
910            echo "ERROR: cannot $git_submodules_action git submodules without .git"
911            exit 1
912        fi
913    ;;
914    ignore)
915        if ! test -f "$source_path/ui/keycodemapdb/README"
916        then
917            echo
918            echo "ERROR: missing GIT submodules"
919            echo
920            if test -e "$source_path/.git"; then
921                echo "--with-git-submodules=ignore specified but submodules were not"
922                echo "checked out.  Please initialize and update submodules."
923            else
924                echo "This is not a GIT checkout but module content appears to"
925                echo "be missing. Do not use 'git archive' or GitHub download links"
926                echo "to acquire QEMU source archives. Non-GIT builds are only"
927                echo "supported with source archives linked from:"
928                echo
929                echo "  https://www.qemu.org/download/#source"
930                echo
931                echo "Developers working with GIT can use scripts/archive-source.sh"
932                echo "if they need to create valid source archives."
933            fi
934            echo
935            exit 1
936        fi
937    ;;
938    *)
939        echo "ERROR: invalid --with-git-submodules= value '$git_submodules_action'"
940        exit 1
941    ;;
942esac
943
944default_target_list=""
945mak_wilds=""
946
947if [ "$linux_user" != no ]; then
948    if [ "$targetos" = linux ] && [ -d "$source_path/linux-user/include/host/$cpu" ]; then
949        linux_user=yes
950    elif [ "$linux_user" = yes ]; then
951        error_exit "linux-user not supported on this architecture"
952    fi
953fi
954if [ "$bsd_user" != no ]; then
955    if [ "$bsd_user" = "" ]; then
956        test $targetos = freebsd && bsd_user=yes
957    fi
958    if [ "$bsd_user" = yes ] && ! [ -d "$source_path/bsd-user/$targetos" ]; then
959        error_exit "bsd-user not supported on this host OS"
960    fi
961fi
962if [ "$softmmu" = "yes" ]; then
963    mak_wilds="${mak_wilds} $source_path/configs/targets/*-softmmu.mak"
964fi
965if [ "$linux_user" = "yes" ]; then
966    mak_wilds="${mak_wilds} $source_path/configs/targets/*-linux-user.mak"
967fi
968if [ "$bsd_user" = "yes" ]; then
969    mak_wilds="${mak_wilds} $source_path/configs/targets/*-bsd-user.mak"
970fi
971
972for config in $mak_wilds; do
973    target="$(basename "$config" .mak)"
974    if echo "$target_list_exclude" | grep -vq "$target"; then
975        default_target_list="${default_target_list} $target"
976    fi
977done
978
979if test x"$show_help" = x"yes" ; then
980cat << EOF
981
982Usage: configure [options]
983Options: [defaults in brackets after descriptions]
984
985Standard options:
986  --help                   print this message
987  --prefix=PREFIX          install in PREFIX [$prefix]
988  --target-list=LIST       set target list (default: build all)
989$(echo Available targets: $default_target_list | \
990  fold -s -w 53 | sed -e 's/^/                           /')
991  --target-list-exclude=LIST exclude a set of targets from the default target-list
992
993Advanced options (experts only):
994  --cross-prefix=PREFIX    use PREFIX for compile tools, PREFIX can be blank [$cross_prefix]
995  --cc=CC                  use C compiler CC [$cc]
996  --host-cc=CC             use C compiler CC [$host_cc] for code run at
997                           build time
998  --cxx=CXX                use C++ compiler CXX [$cxx]
999  --objcc=OBJCC            use Objective-C compiler OBJCC [$objcc]
1000  --extra-cflags=CFLAGS    append extra C compiler flags CFLAGS
1001  --extra-cxxflags=CXXFLAGS append extra C++ compiler flags CXXFLAGS
1002  --extra-objcflags=OBJCFLAGS append extra Objective C compiler flags OBJCFLAGS
1003  --extra-ldflags=LDFLAGS  append extra linker flags LDFLAGS
1004  --cross-cc-ARCH=CC       use compiler when building ARCH guest test cases
1005  --cross-cc-cflags-ARCH=  use compiler flags when building ARCH guest tests
1006  --cross-prefix-ARCH=PREFIX cross compiler prefix when building ARCH guest test cases
1007  --make=MAKE              use specified make [$make]
1008  --python=PYTHON          use specified python [$python]
1009  --meson=MESON            use specified meson [$meson]
1010  --ninja=NINJA            use specified ninja [$ninja]
1011  --smbd=SMBD              use specified smbd [$smbd]
1012  --with-git=GIT           use specified git [$git]
1013  --with-git-submodules=update   update git submodules (default if .git dir exists)
1014  --with-git-submodules=validate fail if git submodules are not up to date
1015  --with-git-submodules=ignore   do not update or check git submodules (default if no .git dir)
1016  --static                 enable static build [$static]
1017  --bindir=PATH            install binaries in PATH
1018  --with-suffix=SUFFIX     suffix for QEMU data inside datadir/libdir/sysconfdir/docdir [$qemu_suffix]
1019  --without-default-features default all --enable-* options to "disabled"
1020  --without-default-devices  do not include any device that is not needed to
1021                           start the emulator (only use if you are including
1022                           desired devices in configs/devices/)
1023  --with-devices-ARCH=NAME override default configs/devices
1024  --enable-debug           enable common debug build options
1025  --enable-sanitizers      enable default sanitizers
1026  --enable-tsan            enable thread sanitizer
1027  --disable-werror         disable compilation abort on warning
1028  --disable-stack-protector disable compiler-provided stack protection
1029  --cpu=CPU                Build for host CPU [$cpu]
1030  --with-coroutine=BACKEND coroutine backend. Supported options:
1031                           ucontext, sigaltstack, windows
1032  --enable-plugins
1033                           enable plugins via shared library loading
1034  --disable-containers     don't use containers for cross-building
1035  --gdb=GDB-path           gdb to use for gdbstub tests [$gdb_bin]
1036EOF
1037  meson_options_help
1038cat << EOF
1039  system          all system emulation targets
1040  user            supported user emulation targets
1041  linux-user      all linux usermode emulation targets
1042  bsd-user        all BSD usermode emulation targets
1043  pie             Position Independent Executables
1044  modules         modules support (non-Windows)
1045  debug-tcg       TCG debugging (default is disabled)
1046  debug-info      debugging information
1047  safe-stack      SafeStack Stack Smash Protection. Depends on
1048                  clang/llvm and requires coroutine backend ucontext.
1049
1050NOTE: The object files are built at the place where configure is launched
1051EOF
1052exit 0
1053fi
1054
1055# Remove old dependency files to make sure that they get properly regenerated
1056rm -f ./*/config-devices.mak.d
1057
1058if test -z "$python"
1059then
1060    # If first_python is set, there was a binary somewhere even though
1061    # it was not suitable.  Use it for the error message.
1062    if test -n "$first_python"; then
1063        error_exit "Cannot use '$first_python', Python >= 3.6 is required." \
1064            "Use --python=/path/to/python to specify a supported Python."
1065    else
1066        error_exit "Python not found. Use --python=/path/to/python"
1067    fi
1068fi
1069
1070if ! has "$make"
1071then
1072    error_exit "GNU make ($make) not found"
1073fi
1074
1075if ! check_py_version "$python"; then
1076  error_exit "Cannot use '$python', Python >= 3.6 is required." \
1077      "Use --python=/path/to/python to specify a supported Python."
1078fi
1079
1080# Resolve PATH + suppress writing compiled files
1081python="$(command -v "$python") -B"
1082
1083has_meson() {
1084  local python_dir=$(dirname "$python")
1085  # PEP405: pyvenv.cfg is either adjacent to the Python executable
1086  # or one directory above
1087  if test -f $python_dir/pyvenv.cfg || test -f $python_dir/../pyvenv.cfg; then
1088    # Ensure that Meson and Python come from the same virtual environment
1089    test -x "$python_dir/meson" &&
1090      test "$(command -v meson)" -ef "$python_dir/meson"
1091  else
1092    has meson
1093  fi
1094}
1095
1096if test -z "$meson"; then
1097    if test "$explicit_python" = no && has_meson && version_ge "$(meson --version)" 0.61.5; then
1098        meson=meson
1099    elif test "$git_submodules_action" != 'ignore' ; then
1100        meson=git
1101    elif test -e "${source_path}/meson/meson.py" ; then
1102        meson=internal
1103    else
1104        if test "$explicit_python" = yes; then
1105            error_exit "--python requires using QEMU's embedded Meson distribution, but it was not found."
1106        else
1107            error_exit "Meson not found.  Use --meson=/path/to/meson"
1108        fi
1109    fi
1110else
1111    # Meson uses its own Python interpreter to invoke other Python scripts,
1112    # but the user wants to use the one they specified with --python.
1113    #
1114    # We do not want to override the distro Python interpreter (and sometimes
1115    # cannot: for example in Homebrew /usr/bin/meson is a bash script), so
1116    # just require --meson=git|internal together with --python.
1117    if test "$explicit_python" = yes; then
1118        case "$meson" in
1119            git | internal) ;;
1120            *) error_exit "--python requires using QEMU's embedded Meson distribution." ;;
1121        esac
1122    fi
1123fi
1124
1125if test "$meson" = git; then
1126    git_submodules="${git_submodules} meson"
1127fi
1128
1129case "$meson" in
1130    git | internal)
1131        meson="$python ${source_path}/meson/meson.py"
1132        ;;
1133    *) meson=$(command -v "$meson") ;;
1134esac
1135
1136# Probe for ninja
1137
1138if test -z "$ninja"; then
1139    for c in ninja ninja-build samu; do
1140        if has $c; then
1141            ninja=$(command -v "$c")
1142            break
1143        fi
1144    done
1145    if test -z "$ninja"; then
1146      error_exit "Cannot find Ninja"
1147    fi
1148fi
1149
1150# Check that the C compiler works. Doing this here before testing
1151# the host CPU ensures that we had a valid CC to autodetect the
1152# $cpu var (and we should bail right here if that's not the case).
1153# It also allows the help message to be printed without a CC.
1154write_c_skeleton;
1155if compile_object ; then
1156  : C compiler works ok
1157else
1158    error_exit "\"$cc\" either does not exist or does not work"
1159fi
1160if ! compile_prog ; then
1161    error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
1162fi
1163
1164# Consult white-list to determine whether to enable werror
1165# by default.  Only enable by default for git builds
1166if test -z "$werror" ; then
1167    if test "$git_submodules_action" != "ignore" && \
1168        { test "$linux" = "yes" || test "$mingw32" = "yes"; }; then
1169        werror="yes"
1170    else
1171        werror="no"
1172    fi
1173fi
1174
1175if test "$targetos" = "bogus"; then
1176    # Now that we know that we're not printing the help and that
1177    # the compiler works (so the results of the check_defines we used
1178    # to identify the OS are reliable), if we didn't recognize the
1179    # host OS we should stop now.
1180    error_exit "Unrecognized host OS (uname -s reports '$(uname -s)')"
1181fi
1182
1183# Check whether the compiler matches our minimum requirements:
1184cat > $TMPC << EOF
1185#if defined(__clang_major__) && defined(__clang_minor__)
1186# ifdef __apple_build_version__
1187#  if __clang_major__ < 12 || (__clang_major__ == 12 && __clang_minor__ < 0)
1188#   error You need at least XCode Clang v12.0 to compile QEMU
1189#  endif
1190# else
1191#  if __clang_major__ < 10 || (__clang_major__ == 10 && __clang_minor__ < 0)
1192#   error You need at least Clang v10.0 to compile QEMU
1193#  endif
1194# endif
1195#elif defined(__GNUC__) && defined(__GNUC_MINOR__)
1196# if __GNUC__ < 7 || (__GNUC__ == 7 && __GNUC_MINOR__ < 4)
1197#  error You need at least GCC v7.4.0 to compile QEMU
1198# endif
1199#else
1200# error You either need GCC or Clang to compiler QEMU
1201#endif
1202int main (void) { return 0; }
1203EOF
1204if ! compile_prog "" "" ; then
1205    error_exit "You need at least GCC v7.4 or Clang v10.0 (or XCode Clang v12.0)"
1206fi
1207
1208# Accumulate -Wfoo and -Wno-bar separately.
1209# We will list all of the enable flags first, and the disable flags second.
1210# Note that we do not add -Werror, because that would enable it for all
1211# configure tests. If a configure test failed due to -Werror this would
1212# just silently disable some features, so it's too error prone.
1213
1214warn_flags=
1215add_to warn_flags -Wundef
1216add_to warn_flags -Wwrite-strings
1217add_to warn_flags -Wmissing-prototypes
1218add_to warn_flags -Wstrict-prototypes
1219add_to warn_flags -Wredundant-decls
1220add_to warn_flags -Wold-style-declaration
1221add_to warn_flags -Wold-style-definition
1222add_to warn_flags -Wtype-limits
1223add_to warn_flags -Wformat-security
1224add_to warn_flags -Wformat-y2k
1225add_to warn_flags -Winit-self
1226add_to warn_flags -Wignored-qualifiers
1227add_to warn_flags -Wempty-body
1228add_to warn_flags -Wnested-externs
1229add_to warn_flags -Wendif-labels
1230add_to warn_flags -Wexpansion-to-defined
1231add_to warn_flags -Wimplicit-fallthrough=2
1232add_to warn_flags -Wmissing-format-attribute
1233
1234if test "$targetos" != "darwin"; then
1235    add_to warn_flags -Wthread-safety
1236fi
1237
1238nowarn_flags=
1239add_to nowarn_flags -Wno-initializer-overrides
1240add_to nowarn_flags -Wno-missing-include-dirs
1241add_to nowarn_flags -Wno-shift-negative-value
1242add_to nowarn_flags -Wno-string-plus-int
1243add_to nowarn_flags -Wno-typedef-redefinition
1244add_to nowarn_flags -Wno-tautological-type-limit-compare
1245add_to nowarn_flags -Wno-psabi
1246add_to nowarn_flags -Wno-gnu-variable-sized-type-not-at-end
1247
1248gcc_flags="$warn_flags $nowarn_flags"
1249
1250cc_has_warning_flag() {
1251    write_c_skeleton;
1252
1253    # Use the positive sense of the flag when testing for -Wno-wombat
1254    # support (gcc will happily accept the -Wno- form of unknown
1255    # warning options).
1256    optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1257    compile_prog "-Werror $optflag" ""
1258}
1259
1260objcc_has_warning_flag() {
1261    cat > $TMPM <<EOF
1262int main(void) { return 0; }
1263EOF
1264
1265    # Use the positive sense of the flag when testing for -Wno-wombat
1266    # support (gcc will happily accept the -Wno- form of unknown
1267    # warning options).
1268    optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1269    do_objc -Werror $optflag \
1270      $OBJCFLAGS $EXTRA_OBJCFLAGS $CONFIGURE_OBJCFLAGS $QEMU_OBJCFLAGS \
1271      -o $TMPE $TMPM $QEMU_LDFLAGS
1272}
1273
1274for flag in $gcc_flags; do
1275    if cc_has_warning_flag $flag ; then
1276        QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1277    fi
1278    if objcc_has_warning_flag $flag ; then
1279        QEMU_OBJCFLAGS="$QEMU_OBJCFLAGS $flag"
1280    fi
1281done
1282
1283if test "$stack_protector" != "no"; then
1284  cat > $TMPC << EOF
1285int main(int argc, char *argv[])
1286{
1287    char arr[64], *p = arr, *c = argv[argc - 1];
1288    while (*c) {
1289        *p++ = *c++;
1290    }
1291    return 0;
1292}
1293EOF
1294  gcc_flags="-fstack-protector-strong -fstack-protector-all"
1295  sp_on=0
1296  for flag in $gcc_flags; do
1297    # We need to check both a compile and a link, since some compiler
1298    # setups fail only on a .c->.o compile and some only at link time
1299    if compile_object "-Werror $flag" &&
1300       compile_prog "-Werror $flag" ""; then
1301      QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1302      QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
1303      sp_on=1
1304      break
1305    fi
1306  done
1307  if test "$stack_protector" = yes; then
1308    if test $sp_on = 0; then
1309      error_exit "Stack protector not supported"
1310    fi
1311  fi
1312fi
1313
1314# Our module code doesn't support Windows
1315if test "$modules" = "yes" && test "$mingw32" = "yes" ; then
1316  error_exit "Modules are not available for Windows"
1317fi
1318
1319# Static linking is not possible with plugins, modules or PIE
1320if test "$static" = "yes" ; then
1321  if test "$modules" = "yes" ; then
1322    error_exit "static and modules are mutually incompatible"
1323  fi
1324  if test "$plugins" = "yes"; then
1325    error_exit "static and plugins are mutually incompatible"
1326  else
1327    plugins="no"
1328  fi
1329fi
1330test "$plugins" = "" && plugins=yes
1331
1332cat > $TMPC << EOF
1333
1334#ifdef __linux__
1335#  define THREAD __thread
1336#else
1337#  define THREAD
1338#endif
1339static THREAD int tls_var;
1340int main(void) { return tls_var; }
1341EOF
1342
1343# Meson currently only handles pie as a boolean for now so if we have
1344# explicitly disabled PIE we need to extend our cflags because it wont.
1345if test "$static" = "yes"; then
1346  if test "$pie" != "no" && compile_prog "-Werror -fPIE -DPIE" "-static-pie"; then
1347    CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
1348    pie="yes"
1349  elif test "$pie" = "yes"; then
1350    error_exit "-static-pie not available due to missing toolchain support"
1351  else
1352    pie="no"
1353    QEMU_CFLAGS="-fno-pie $QEMU_CFLAGS"
1354  fi
1355elif test "$pie" = "no"; then
1356  if compile_prog "-Werror -fno-pie" "-no-pie"; then
1357    CONFIGURE_CFLAGS="-fno-pie $CONFIGURE_CFLAGS"
1358    CONFIGURE_LDFLAGS="-no-pie $CONFIGURE_LDFLAGS"
1359    QEMU_CFLAGS="-fno-pie -no-pie $QEMU_CFLAGS"
1360  fi
1361elif compile_prog "-Werror -fPIE -DPIE" "-pie"; then
1362  CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
1363  CONFIGURE_LDFLAGS="-pie $CONFIGURE_LDFLAGS"
1364  pie="yes"
1365elif test "$pie" = "yes"; then
1366  error_exit "PIE not available due to missing toolchain support"
1367else
1368  echo "Disabling PIE due to missing toolchain support"
1369  pie="no"
1370fi
1371
1372##########################################
1373# __sync_fetch_and_and requires at least -march=i486. Many toolchains
1374# use i686 as default anyway, but for those that don't, an explicit
1375# specification is necessary
1376
1377if test "$cpu" = "i386"; then
1378  cat > $TMPC << EOF
1379static int sfaa(int *ptr)
1380{
1381  return __sync_fetch_and_and(ptr, 0);
1382}
1383
1384int main(void)
1385{
1386  int val = 42;
1387  val = __sync_val_compare_and_swap(&val, 0, 1);
1388  sfaa(&val);
1389  return val;
1390}
1391EOF
1392  if ! compile_prog "" "" ; then
1393    QEMU_CFLAGS="-march=i486 $QEMU_CFLAGS"
1394  fi
1395fi
1396
1397if test -z "${target_list+xxx}" ; then
1398    default_targets=yes
1399    for target in $default_target_list; do
1400        target_list="$target_list $target"
1401    done
1402    target_list="${target_list# }"
1403else
1404    default_targets=no
1405    target_list=$(echo "$target_list" | sed -e 's/,/ /g')
1406    for target in $target_list; do
1407        # Check that we recognised the target name; this allows a more
1408        # friendly error message than if we let it fall through.
1409        case " $default_target_list " in
1410            *" $target "*)
1411                ;;
1412            *)
1413                error_exit "Unknown target name '$target'"
1414                ;;
1415        esac
1416    done
1417fi
1418
1419# see if system emulation was really requested
1420case " $target_list " in
1421  *"-softmmu "*) softmmu=yes
1422  ;;
1423  *) softmmu=no
1424  ;;
1425esac
1426
1427if test "$tcg" = "auto"; then
1428  if test -z "$target_list"; then
1429    tcg="disabled"
1430  else
1431    tcg="enabled"
1432  fi
1433fi
1434
1435if test "$tcg" = "enabled"; then
1436    git_submodules="$git_submodules tests/fp/berkeley-testfloat-3"
1437    git_submodules="$git_submodules tests/fp/berkeley-softfloat-3"
1438fi
1439
1440##########################################
1441# big/little endian test
1442cat > $TMPC << EOF
1443#if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
1444# error LITTLE
1445#endif
1446int main(void) { return 0; }
1447EOF
1448
1449if ! compile_prog ; then
1450  bigendian="no"
1451else
1452  cat > $TMPC << EOF
1453#if defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
1454# error BIG
1455#endif
1456int main(void) { return 0; }
1457EOF
1458
1459  if ! compile_prog ; then
1460    bigendian="yes"
1461  else
1462    echo big/little test failed
1463    exit 1
1464  fi
1465fi
1466
1467##########################################
1468# pkg-config probe
1469
1470if ! has "$pkg_config_exe"; then
1471  error_exit "pkg-config binary '$pkg_config_exe' not found"
1472fi
1473
1474##########################################
1475# glib support probe
1476
1477# When bumping glib_req_ver, please check also whether we should increase
1478# the _WIN32_WINNT setting in osdep.h according to the value from glib
1479glib_req_ver=2.56
1480glib_modules=gthread-2.0
1481if test "$modules" = yes; then
1482    glib_modules="$glib_modules gmodule-export-2.0"
1483elif test "$plugins" = "yes"; then
1484    glib_modules="$glib_modules gmodule-no-export-2.0"
1485fi
1486
1487for i in $glib_modules; do
1488    if $pkg_config --atleast-version=$glib_req_ver $i; then
1489        glib_cflags=$($pkg_config --cflags $i)
1490        glib_libs=$($pkg_config --libs $i)
1491    else
1492        error_exit "glib-$glib_req_ver $i is required to compile QEMU"
1493    fi
1494done
1495
1496glib_bindir="$($pkg_config --variable=bindir glib-2.0)"
1497if test -z "$glib_bindir" ; then
1498	glib_bindir="$($pkg_config --variable=prefix glib-2.0)"/bin
1499fi
1500
1501# This workaround is required due to a bug in pkg-config file for glib as it
1502# doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
1503
1504if test "$static" = yes && test "$mingw32" = yes; then
1505    glib_cflags="-DGLIB_STATIC_COMPILATION $glib_cflags"
1506fi
1507
1508# Sanity check that the current size_t matches the
1509# size that glib thinks it should be. This catches
1510# problems on multi-arch where people try to build
1511# 32-bit QEMU while pointing at 64-bit glib headers
1512cat > $TMPC <<EOF
1513#include <glib.h>
1514#include <unistd.h>
1515
1516#define QEMU_BUILD_BUG_ON(x) \
1517  typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
1518
1519int main(void) {
1520   QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
1521   return 0;
1522}
1523EOF
1524
1525if ! compile_prog "$glib_cflags" "$glib_libs" ; then
1526    error_exit "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T."\
1527               "You probably need to set PKG_CONFIG_LIBDIR"\
1528	       "to point to the right pkg-config files for your"\
1529	       "build target"
1530fi
1531
1532# Silence clang warnings triggered by glib < 2.57.2
1533cat > $TMPC << EOF
1534#include <glib.h>
1535typedef struct Foo {
1536    int i;
1537} Foo;
1538static void foo_free(Foo *f)
1539{
1540    g_free(f);
1541}
1542G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free)
1543int main(void) { return 0; }
1544EOF
1545if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
1546    if cc_has_warning_flag "-Wno-unused-function"; then
1547        glib_cflags="$glib_cflags -Wno-unused-function"
1548        CONFIGURE_CFLAGS="$CONFIGURE_CFLAGS -Wno-unused-function"
1549    fi
1550fi
1551
1552##########################################
1553# fdt probe
1554
1555case "$fdt" in
1556  auto | enabled | internal)
1557    # Simpler to always update submodule, even if not needed.
1558    git_submodules="${git_submodules} dtc"
1559    ;;
1560esac
1561
1562##########################################
1563# check and set a backend for coroutine
1564
1565# We prefer ucontext, but it's not always possible. The fallback
1566# is sigcontext. On Windows the only valid backend is the Windows
1567# specific one.
1568
1569ucontext_works=no
1570if test "$darwin" != "yes"; then
1571  cat > $TMPC << EOF
1572#include <ucontext.h>
1573#ifdef __stub_makecontext
1574#error Ignoring glibc stub makecontext which will always fail
1575#endif
1576int main(void) { makecontext(0, 0, 0); return 0; }
1577EOF
1578  if compile_prog "" "" ; then
1579    ucontext_works=yes
1580  fi
1581fi
1582
1583if test "$coroutine" = ""; then
1584  if test "$mingw32" = "yes"; then
1585    coroutine=win32
1586  elif test "$ucontext_works" = "yes"; then
1587    coroutine=ucontext
1588  else
1589    coroutine=sigaltstack
1590  fi
1591else
1592  case $coroutine in
1593  windows)
1594    if test "$mingw32" != "yes"; then
1595      error_exit "'windows' coroutine backend only valid for Windows"
1596    fi
1597    # Unfortunately the user visible backend name doesn't match the
1598    # coroutine-*.c filename for this case, so we have to adjust it here.
1599    coroutine=win32
1600    ;;
1601  ucontext)
1602    if test "$ucontext_works" != "yes"; then
1603      error_exit "'ucontext' backend requested but makecontext not available"
1604    fi
1605    ;;
1606  sigaltstack)
1607    if test "$mingw32" = "yes"; then
1608      error_exit "only the 'windows' coroutine backend is valid for Windows"
1609    fi
1610    ;;
1611  *)
1612    error_exit "unknown coroutine backend $coroutine"
1613    ;;
1614  esac
1615fi
1616
1617##################################################
1618# SafeStack
1619
1620
1621if test "$safe_stack" = "yes"; then
1622cat > $TMPC << EOF
1623int main(void)
1624{
1625#if ! __has_feature(safe_stack)
1626#error SafeStack Disabled
1627#endif
1628    return 0;
1629}
1630EOF
1631  flag="-fsanitize=safe-stack"
1632  # Check that safe-stack is supported and enabled.
1633  if compile_prog "-Werror $flag" "$flag"; then
1634    # Flag needed both at compilation and at linking
1635    QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1636    QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
1637  else
1638    error_exit "SafeStack not supported by your compiler"
1639  fi
1640  if test "$coroutine" != "ucontext"; then
1641    error_exit "SafeStack is only supported by the coroutine backend ucontext"
1642  fi
1643else
1644cat > $TMPC << EOF
1645int main(void)
1646{
1647#if defined(__has_feature)
1648#if __has_feature(safe_stack)
1649#error SafeStack Enabled
1650#endif
1651#endif
1652    return 0;
1653}
1654EOF
1655if test "$safe_stack" = "no"; then
1656  # Make sure that safe-stack is disabled
1657  if ! compile_prog "-Werror" ""; then
1658    # SafeStack was already enabled, try to explicitly remove the feature
1659    flag="-fno-sanitize=safe-stack"
1660    if ! compile_prog "-Werror $flag" "$flag"; then
1661      error_exit "Configure cannot disable SafeStack"
1662    fi
1663    QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1664    QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
1665  fi
1666else # "$safe_stack" = ""
1667  # Set safe_stack to yes or no based on pre-existing flags
1668  if compile_prog "-Werror" ""; then
1669    safe_stack="no"
1670  else
1671    safe_stack="yes"
1672    if test "$coroutine" != "ucontext"; then
1673      error_exit "SafeStack is only supported by the coroutine backend ucontext"
1674    fi
1675  fi
1676fi
1677fi
1678
1679########################################
1680# check if ccache is interfering with
1681# semantic analysis of macros
1682
1683unset CCACHE_CPP2
1684ccache_cpp2=no
1685cat > $TMPC << EOF
1686static const int Z = 1;
1687#define fn() ({ Z; })
1688#define TAUT(X) ((X) == Z)
1689#define PAREN(X, Y) (X == Y)
1690#define ID(X) (X)
1691int main(void)
1692{
1693    int x = 0, y = 0;
1694    x = ID(x);
1695    x = fn();
1696    fn();
1697    if (PAREN(x, y)) return 0;
1698    if (TAUT(Z)) return 0;
1699    return 0;
1700}
1701EOF
1702
1703if ! compile_object "-Werror"; then
1704    ccache_cpp2=yes
1705fi
1706
1707#################################################
1708# clang does not support glibc + FORTIFY_SOURCE.
1709
1710if test "$fortify_source" != "no"; then
1711  if echo | $cc -dM -E - | grep __clang__ > /dev/null 2>&1 ; then
1712    fortify_source="no";
1713  elif test -n "$cxx" && has $cxx &&
1714       echo | $cxx -dM -E - | grep __clang__ >/dev/null 2>&1 ; then
1715    fortify_source="no";
1716  else
1717    fortify_source="yes"
1718  fi
1719fi
1720
1721##########################################
1722# checks for sanitizers
1723
1724have_asan=no
1725have_ubsan=no
1726have_asan_iface_h=no
1727have_asan_iface_fiber=no
1728
1729if test "$sanitizers" = "yes" ; then
1730  write_c_skeleton
1731  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" ""; then
1732      have_asan=yes
1733  fi
1734
1735  # we could use a simple skeleton for flags checks, but this also
1736  # detect the static linking issue of ubsan, see also:
1737  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84285
1738  cat > $TMPC << EOF
1739#include <stdlib.h>
1740int main(void) {
1741    void *tmp = malloc(10);
1742    if (tmp != NULL) {
1743        return *(int *)(tmp + 2);
1744    }
1745    return 1;
1746}
1747EOF
1748  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=undefined" ""; then
1749      have_ubsan=yes
1750  fi
1751
1752  if check_include "sanitizer/asan_interface.h" ; then
1753      have_asan_iface_h=yes
1754  fi
1755
1756  cat > $TMPC << EOF
1757#include <sanitizer/asan_interface.h>
1758int main(void) {
1759  __sanitizer_start_switch_fiber(0, 0, 0);
1760  return 0;
1761}
1762EOF
1763  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" "" ; then
1764      have_asan_iface_fiber=yes
1765  fi
1766fi
1767
1768# Thread sanitizer is, for now, much noisier than the other sanitizers;
1769# keep it separate until that is not the case.
1770if test "$tsan" = "yes" && test "$sanitizers" = "yes"; then
1771  error_exit "TSAN is not supported with other sanitiziers."
1772fi
1773have_tsan=no
1774have_tsan_iface_fiber=no
1775if test "$tsan" = "yes" ; then
1776  write_c_skeleton
1777  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
1778      have_tsan=yes
1779  fi
1780  cat > $TMPC << EOF
1781#include <sanitizer/tsan_interface.h>
1782int main(void) {
1783  __tsan_create_fiber(0);
1784  return 0;
1785}
1786EOF
1787  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
1788      have_tsan_iface_fiber=yes
1789  fi
1790fi
1791
1792##########################################
1793# functions to probe cross compilers
1794
1795container="no"
1796runc=""
1797if test $use_containers = "yes" && (has "docker" || has "podman"); then
1798    case $($python "$source_path"/tests/docker/docker.py probe) in
1799        *docker) container=docker ;;
1800        podman) container=podman ;;
1801        no) container=no ;;
1802    esac
1803    if test "$container" != "no"; then
1804        docker_py="$python $source_path/tests/docker/docker.py --engine $container"
1805        runc=$($python "$source_path"/tests/docker/docker.py probe)
1806    fi
1807fi
1808
1809# cross compilers defaults, can be overridden with --cross-cc-ARCH
1810: ${cross_prefix_aarch64="aarch64-linux-gnu-"}
1811: ${cross_prefix_aarch64_be="$cross_prefix_aarch64"}
1812: ${cross_prefix_alpha="alpha-linux-gnu-"}
1813: ${cross_prefix_arm="arm-linux-gnueabihf-"}
1814: ${cross_prefix_armeb="$cross_prefix_arm"}
1815: ${cross_prefix_hexagon="hexagon-unknown-linux-musl-"}
1816: ${cross_prefix_loongarch64="loongarch64-unknown-linux-gnu-"}
1817: ${cross_prefix_hppa="hppa-linux-gnu-"}
1818: ${cross_prefix_i386="i686-linux-gnu-"}
1819: ${cross_prefix_m68k="m68k-linux-gnu-"}
1820: ${cross_prefix_microblaze="microblaze-linux-musl-"}
1821: ${cross_prefix_mips64el="mips64el-linux-gnuabi64-"}
1822: ${cross_prefix_mips64="mips64-linux-gnuabi64-"}
1823: ${cross_prefix_mipsel="mipsel-linux-gnu-"}
1824: ${cross_prefix_mips="mips-linux-gnu-"}
1825: ${cross_prefix_nios2="nios2-linux-gnu-"}
1826: ${cross_prefix_ppc="powerpc-linux-gnu-"}
1827: ${cross_prefix_ppc64="powerpc64-linux-gnu-"}
1828: ${cross_prefix_ppc64le="$cross_prefix_ppc64"}
1829: ${cross_prefix_riscv64="riscv64-linux-gnu-"}
1830: ${cross_prefix_s390x="s390x-linux-gnu-"}
1831: ${cross_prefix_sh4="sh4-linux-gnu-"}
1832: ${cross_prefix_sparc64="sparc64-linux-gnu-"}
1833: ${cross_prefix_sparc="$cross_prefix_sparc64"}
1834: ${cross_prefix_x86_64="x86_64-linux-gnu-"}
1835
1836: ${cross_cc_aarch64_be="$cross_cc_aarch64"}
1837: ${cross_cc_cflags_aarch64_be="-mbig-endian"}
1838: ${cross_cc_armeb="$cross_cc_arm"}
1839: ${cross_cc_cflags_armeb="-mbig-endian"}
1840: ${cross_cc_hexagon="hexagon-unknown-linux-musl-clang"}
1841: ${cross_cc_cflags_hexagon="-mv67 -O2 -static"}
1842: ${cross_cc_cflags_i386="-m32"}
1843: ${cross_cc_cflags_ppc="-m32 -mbig-endian"}
1844: ${cross_cc_cflags_ppc64="-m64 -mbig-endian"}
1845: ${cross_cc_ppc64le="$cross_cc_ppc64"}
1846: ${cross_cc_cflags_ppc64le="-m64 -mlittle-endian"}
1847: ${cross_cc_cflags_sparc64="-m64 -mcpu=ultrasparc"}
1848: ${cross_cc_sparc="$cross_cc_sparc64"}
1849: ${cross_cc_cflags_sparc="-m32 -mcpu=supersparc"}
1850: ${cross_cc_cflags_x86_64="-m64"}
1851
1852compute_target_variable() {
1853  eval "$2="
1854  if eval test -n "\"\${cross_prefix_$1}\""; then
1855    if eval has "\"\${cross_prefix_$1}\$3\""; then
1856      eval "$2=\"\${cross_prefix_$1}\$3\""
1857    fi
1858  fi
1859}
1860
1861have_target() {
1862  for i; do
1863    case " $target_list " in
1864      *" $i "*) return 0;;
1865      *) ;;
1866    esac
1867  done
1868  return 1
1869}
1870
1871# probe_target_compiler TARGET
1872#
1873# Look for a compiler for the given target, either native or cross.
1874# Set variables target_* if a compiler is found, and container_cross_*
1875# if a Docker-based cross-compiler image is known for the target.
1876# Set got_cross_cc to yes/no depending on whether a non-container-based
1877# compiler was found.
1878#
1879# If TARGET is a user-mode emulation target, also set build_static to
1880# "y" if static linking is possible.
1881#
1882probe_target_compiler() {
1883  # reset all output variables
1884  got_cross_cc=no
1885  container_image=
1886  container_hosts=
1887  container_cross_cc=
1888  container_cross_ar=
1889  container_cross_as=
1890  container_cross_ld=
1891  container_cross_nm=
1892  container_cross_objcopy=
1893  container_cross_ranlib=
1894  container_cross_strip=
1895
1896  # We shall skip configuring the target compiler if the user didn't
1897  # bother enabling an appropriate guest. This avoids building
1898  # extraneous firmware images and tests.
1899  if test "${target_list#*$1}" = "$1"; then
1900      return 1
1901  fi
1902
1903  target_arch=${1%%-*}
1904  case $target_arch in
1905    aarch64) container_hosts="x86_64 aarch64" ;;
1906    alpha) container_hosts=x86_64 ;;
1907    arm) container_hosts="x86_64 aarch64" ;;
1908    cris) container_hosts=x86_64 ;;
1909    hexagon) container_hosts=x86_64 ;;
1910    hppa) container_hosts=x86_64 ;;
1911    i386) container_hosts=x86_64 ;;
1912    loongarch64) container_hosts=x86_64 ;;
1913    m68k) container_hosts=x86_64 ;;
1914    microblaze) container_hosts=x86_64 ;;
1915    mips64el) container_hosts=x86_64 ;;
1916    mips64) container_hosts=x86_64 ;;
1917    mipsel) container_hosts=x86_64 ;;
1918    mips) container_hosts=x86_64 ;;
1919    nios2) container_hosts=x86_64 ;;
1920    ppc) container_hosts=x86_64 ;;
1921    ppc64|ppc64le) container_hosts=x86_64 ;;
1922    riscv64) container_hosts=x86_64 ;;
1923    s390x) container_hosts=x86_64 ;;
1924    sh4) container_hosts=x86_64 ;;
1925    sparc64) container_hosts=x86_64 ;;
1926    tricore) container_hosts=x86_64 ;;
1927    x86_64) container_hosts="aarch64 ppc64el x86_64" ;;
1928    xtensa*) container_hosts=x86_64 ;;
1929  esac
1930
1931  for host in $container_hosts; do
1932    test "$container" != no || continue
1933    test "$host" = "$cpu" || continue
1934    case $target_arch in
1935      aarch64)
1936        # We don't have any bigendian build tools so we only use this for AArch64
1937        container_image=debian-arm64-cross
1938        container_cross_prefix=aarch64-linux-gnu-
1939        container_cross_cc=${container_cross_prefix}gcc-10
1940        ;;
1941      alpha)
1942        container_image=debian-alpha-cross
1943        container_cross_prefix=alpha-linux-gnu-
1944        ;;
1945      arm)
1946        # We don't have any bigendian build tools so we only use this for ARM
1947        container_image=debian-armhf-cross
1948        container_cross_prefix=arm-linux-gnueabihf-
1949        ;;
1950      cris)
1951        container_image=fedora-cris-cross
1952        container_cross_prefix=cris-linux-gnu-
1953        ;;
1954      hexagon)
1955        container_image=debian-hexagon-cross
1956        container_cross_prefix=hexagon-unknown-linux-musl-
1957        container_cross_cc=${container_cross_prefix}clang
1958        ;;
1959      hppa)
1960        container_image=debian-hppa-cross
1961        container_cross_prefix=hppa-linux-gnu-
1962        ;;
1963      i386)
1964        container_image=fedora-i386-cross
1965        container_cross_prefix=
1966        ;;
1967      loongarch64)
1968        container_image=debian-loongarch-cross
1969        container_cross_prefix=loongarch64-unknown-linux-gnu-
1970        ;;
1971      m68k)
1972        container_image=debian-m68k-cross
1973        container_cross_prefix=m68k-linux-gnu-
1974        ;;
1975      microblaze)
1976        container_image=debian-microblaze-cross
1977        container_cross_prefix=microblaze-linux-musl-
1978        ;;
1979      mips64el)
1980        container_image=debian-mips64el-cross
1981        container_cross_prefix=mips64el-linux-gnuabi64-
1982        ;;
1983      mips64)
1984        container_image=debian-mips64-cross
1985        container_cross_prefix=mips64-linux-gnuabi64-
1986        ;;
1987      mipsel)
1988        container_image=debian-mipsel-cross
1989        container_cross_prefix=mipsel-linux-gnu-
1990        ;;
1991      mips)
1992        container_image=debian-mips-cross
1993        container_cross_prefix=mips-linux-gnu-
1994        ;;
1995      nios2)
1996        container_image=debian-nios2-cross
1997        container_cross_prefix=nios2-linux-gnu-
1998        ;;
1999      ppc)
2000        container_image=debian-powerpc-test-cross
2001        container_cross_prefix=powerpc-linux-gnu-
2002        container_cross_cc=${container_cross_prefix}gcc-10
2003        ;;
2004      ppc64|ppc64le)
2005        container_image=debian-powerpc-test-cross
2006        container_cross_prefix=powerpc${target_arch#ppc}-linux-gnu-
2007        container_cross_cc=${container_cross_prefix}gcc-10
2008        ;;
2009      riscv64)
2010        container_image=debian-riscv64-test-cross
2011        container_cross_prefix=riscv64-linux-gnu-
2012        ;;
2013      s390x)
2014        container_image=debian-s390x-cross
2015        container_cross_prefix=s390x-linux-gnu-
2016        ;;
2017      sh4)
2018        container_image=debian-sh4-cross
2019        container_cross_prefix=sh4-linux-gnu-
2020        ;;
2021      sparc64)
2022        container_image=debian-sparc64-cross
2023        container_cross_prefix=sparc64-linux-gnu-
2024        ;;
2025      tricore)
2026        container_image=debian-tricore-cross
2027        container_cross_prefix=tricore-
2028        container_cross_as=tricore-as
2029        container_cross_ld=tricore-ld
2030        break
2031        ;;
2032      x86_64)
2033        container_image=debian-amd64-cross
2034        container_cross_prefix=x86_64-linux-gnu-
2035        ;;
2036      xtensa*)
2037        container_hosts=x86_64
2038        container_image=debian-xtensa-cross
2039
2040        # default to the dc232b cpu
2041        container_cross_prefix=/opt/2020.07/xtensa-dc232b-elf/bin/xtensa-dc232b-elf-
2042        ;;
2043    esac
2044    : ${container_cross_cc:=${container_cross_prefix}gcc}
2045    : ${container_cross_ar:=${container_cross_prefix}ar}
2046    : ${container_cross_as:=${container_cross_prefix}as}
2047    : ${container_cross_ld:=${container_cross_prefix}ld}
2048    : ${container_cross_nm:=${container_cross_prefix}nm}
2049    : ${container_cross_objcopy:=${container_cross_prefix}objcopy}
2050    : ${container_cross_ranlib:=${container_cross_prefix}ranlib}
2051    : ${container_cross_strip:=${container_cross_prefix}strip}
2052  done
2053
2054  try=cross
2055  case "$target_arch:$cpu" in
2056    aarch64_be:aarch64 | \
2057    armeb:arm | \
2058    i386:x86_64 | \
2059    mips*:mips64 | \
2060    ppc*:ppc64 | \
2061    sparc:sparc64 | \
2062    "$cpu:$cpu")
2063      try='native cross' ;;
2064  esac
2065  eval "target_cflags=\${cross_cc_cflags_$target_arch}"
2066  for thistry in $try; do
2067    case $thistry in
2068    native)
2069      target_cc=$cc
2070      target_ccas=$ccas
2071      target_ar=$ar
2072      target_as=$as
2073      target_ld=$ld
2074      target_nm=$nm
2075      target_objcopy=$objcopy
2076      target_ranlib=$ranlib
2077      target_strip=$strip
2078      ;;
2079    cross)
2080      target_cc=
2081      if eval test -n "\"\${cross_cc_$target_arch}\""; then
2082        if eval has "\"\${cross_cc_$target_arch}\""; then
2083          eval "target_cc=\"\${cross_cc_$target_arch}\""
2084        fi
2085      else
2086        compute_target_variable $target_arch target_cc gcc
2087      fi
2088      target_ccas=$target_cc
2089      compute_target_variable $target_arch target_ar ar
2090      compute_target_variable $target_arch target_as as
2091      compute_target_variable $target_arch target_ld ld
2092      compute_target_variable $target_arch target_nm nm
2093      compute_target_variable $target_arch target_objcopy objcopy
2094      compute_target_variable $target_arch target_ranlib ranlib
2095      compute_target_variable $target_arch target_strip strip
2096      ;;
2097    esac
2098
2099    if test -n "$target_cc"; then
2100      case $target_arch in
2101        i386|x86_64)
2102          if $target_cc --version | grep -qi "clang"; then
2103            continue
2104          fi
2105          ;;
2106      esac
2107    elif test -n "$target_as" && test -n "$target_ld"; then
2108      # Special handling for assembler only targets
2109      case $target in
2110        tricore-softmmu)
2111          build_static=
2112          got_cross_cc=yes
2113          break
2114          ;;
2115        *)
2116          continue
2117          ;;
2118      esac
2119    else
2120      continue
2121    fi
2122
2123    write_c_skeleton
2124    case $1 in
2125      *-softmmu)
2126        if do_compiler "$target_cc" $target_cflags -o $TMPO -c $TMPC &&
2127          do_compiler "$target_cc" $target_cflags -r -nostdlib -o "${TMPDIR1}/${TMPB}2.o" "$TMPO" -lgcc; then
2128          got_cross_cc=yes
2129          break
2130        fi
2131        ;;
2132      *)
2133        if do_compiler "$target_cc" $target_cflags -o $TMPE $TMPC -static ; then
2134          build_static=y
2135          got_cross_cc=yes
2136          break
2137        fi
2138        if do_compiler "$target_cc" $target_cflags -o $TMPE $TMPC ; then
2139          build_static=
2140          got_cross_cc=yes
2141          break
2142        fi
2143        ;;
2144    esac
2145  done
2146  if test $got_cross_cc != yes; then
2147    build_static=
2148    target_cc=
2149    target_ccas=
2150    target_ar=
2151    target_as=
2152    target_ld=
2153    target_nm=
2154    target_objcopy=
2155    target_ranlib=
2156    target_strip=
2157  fi
2158  test -n "$target_cc"
2159}
2160
2161write_target_makefile() {
2162  echo "EXTRA_CFLAGS=$target_cflags"
2163  if test -z "$target_cc" && test -z "$target_as"; then
2164    test -z "$container_image" && error_exit "Internal error: could not find cross compiler for $1?"
2165    echo "$1: docker-image-$container_image" >> Makefile.prereqs
2166    if test -n "$container_cross_cc"; then
2167      echo "CC=$docker_py cc --cc $container_cross_cc -i qemu/$container_image -s $source_path --"
2168      echo "CCAS=$docker_py cc --cc $container_cross_cc -i qemu/$container_image -s $source_path --"
2169    fi
2170    echo "AR=$docker_py cc --cc $container_cross_ar -i qemu/$container_image -s $source_path --"
2171    echo "AS=$docker_py cc --cc $container_cross_as -i qemu/$container_image -s $source_path --"
2172    echo "LD=$docker_py cc --cc $container_cross_ld -i qemu/$container_image -s $source_path --"
2173    echo "NM=$docker_py cc --cc $container_cross_nm -i qemu/$container_image -s $source_path --"
2174    echo "OBJCOPY=$docker_py cc --cc $container_cross_objcopy -i qemu/$container_image -s $source_path --"
2175    echo "RANLIB=$docker_py cc --cc $container_cross_ranlib -i qemu/$container_image -s $source_path --"
2176    echo "STRIP=$docker_py cc --cc $container_cross_strip -i qemu/$container_image -s $source_path --"
2177  else
2178    if test -n "$target_cc"; then
2179      echo "CC=$target_cc"
2180      echo "CCAS=$target_ccas"
2181    fi
2182    if test -n "$target_ar"; then
2183      echo "AR=$target_ar"
2184    fi
2185    if test -n "$target_as"; then
2186      echo "AS=$target_as"
2187    fi
2188    if test -n "$target_ld"; then
2189      echo "LD=$target_ld"
2190    fi
2191    if test -n "$target_nm"; then
2192      echo "NM=$target_nm"
2193    fi
2194    if test -n "$target_objcopy"; then
2195      echo "OBJCOPY=$target_objcopy"
2196    fi
2197    if test -n "$target_ranlib"; then
2198      echo "RANLIB=$target_ranlib"
2199    fi
2200    if test -n "$target_strip"; then
2201      echo "STRIP=$target_strip"
2202    fi
2203  fi
2204}
2205
2206##########################################
2207# check for vfio_user_server
2208
2209case "$vfio_user_server" in
2210  enabled )
2211    if test "$git_submodules_action" != "ignore"; then
2212      git_submodules="${git_submodules} subprojects/libvfio-user"
2213    fi
2214    ;;
2215esac
2216
2217##########################################
2218# End of CC checks
2219# After here, no more $cc or $ld runs
2220
2221write_c_skeleton
2222
2223if test "$fortify_source" = "yes" ; then
2224  QEMU_CFLAGS="-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $QEMU_CFLAGS"
2225fi
2226
2227if test "$have_asan" = "yes"; then
2228  QEMU_CFLAGS="-fsanitize=address $QEMU_CFLAGS"
2229  QEMU_LDFLAGS="-fsanitize=address $QEMU_LDFLAGS"
2230  if test "$have_asan_iface_h" = "no" ; then
2231      echo "ASAN build enabled, but ASAN header missing." \
2232           "Without code annotation, the report may be inferior."
2233  elif test "$have_asan_iface_fiber" = "no" ; then
2234      echo "ASAN build enabled, but ASAN header is too old." \
2235           "Without code annotation, the report may be inferior."
2236  fi
2237fi
2238if test "$have_tsan" = "yes" ; then
2239  if test "$have_tsan_iface_fiber" = "yes" ; then
2240    QEMU_CFLAGS="-fsanitize=thread $QEMU_CFLAGS"
2241    QEMU_LDFLAGS="-fsanitize=thread $QEMU_LDFLAGS"
2242  else
2243    error_exit "Cannot enable TSAN due to missing fiber annotation interface."
2244  fi
2245elif test "$tsan" = "yes" ; then
2246  error_exit "Cannot enable TSAN due to missing sanitize thread interface."
2247fi
2248if test "$have_ubsan" = "yes"; then
2249  QEMU_CFLAGS="-fsanitize=undefined $QEMU_CFLAGS"
2250  QEMU_LDFLAGS="-fsanitize=undefined $QEMU_LDFLAGS"
2251fi
2252
2253#######################################
2254# cross-compiled firmware targets
2255
2256# Set up build tree symlinks that point back into the source tree
2257# (these can be both files and directories).
2258# Caution: avoid adding files or directories here using wildcards. This
2259# will result in problems later if a new file matching the wildcard is
2260# added to the source tree -- nothing will cause configure to be rerun
2261# so the build tree will be missing the link back to the new file, and
2262# tests might fail. Prefer to keep the relevant files in their own
2263# directory and symlink the directory instead.
2264LINKS="Makefile"
2265LINKS="$LINKS pc-bios/optionrom/Makefile"
2266LINKS="$LINKS pc-bios/s390-ccw/Makefile"
2267LINKS="$LINKS pc-bios/vof/Makefile"
2268LINKS="$LINKS .gdbinit scripts" # scripts needed by relative path in .gdbinit
2269LINKS="$LINKS tests/avocado tests/data"
2270LINKS="$LINKS tests/qemu-iotests/check"
2271LINKS="$LINKS python"
2272LINKS="$LINKS contrib/plugins/Makefile "
2273for f in $LINKS ; do
2274    if [ -e "$source_path/$f" ]; then
2275        mkdir -p "$(dirname ./"$f")"
2276        symlink "$source_path/$f" "$f"
2277    fi
2278done
2279
2280echo "# Automatically generated by configure - do not modify" > Makefile.prereqs
2281
2282# Mac OS X ships with a broken assembler
2283roms=
2284if have_target i386-softmmu x86_64-softmmu && \
2285        test "$targetos" != "darwin" && test "$targetos" != "sunos" && \
2286        test "$targetos" != "haiku" && \
2287        probe_target_compiler i386-softmmu; then
2288    roms="pc-bios/optionrom"
2289    config_mak=pc-bios/optionrom/config.mak
2290    echo "# Automatically generated by configure - do not modify" > $config_mak
2291    echo "TOPSRC_DIR=$source_path" >> $config_mak
2292    write_target_makefile >> $config_mak
2293fi
2294
2295if have_target ppc-softmmu ppc64-softmmu && \
2296        probe_target_compiler ppc-softmmu; then
2297    roms="$roms pc-bios/vof"
2298    config_mak=pc-bios/vof/config.mak
2299    echo "# Automatically generated by configure - do not modify" > $config_mak
2300    echo "SRC_DIR=$source_path/pc-bios/vof" >> $config_mak
2301    write_target_makefile >> $config_mak
2302fi
2303
2304# Only build s390-ccw bios if the compiler has -march=z900 or -march=z10
2305# (which is the lowest architecture level that Clang supports)
2306if have_target s390x-softmmu && probe_target_compiler s390x-softmmu; then
2307  write_c_skeleton
2308  do_compiler "$target_cc" $target_cc_cflags -march=z900 -o $TMPO -c $TMPC
2309  has_z900=$?
2310  if [ $has_z900 = 0 ] || do_compiler "$target_cc" $target_cc_cflags -march=z10 -msoft-float -Werror -o $TMPO -c $TMPC; then
2311    if [ $has_z900 != 0 ]; then
2312      echo "WARNING: Your compiler does not support the z900!"
2313      echo "         The s390-ccw bios will only work with guest CPUs >= z10."
2314    fi
2315    roms="$roms pc-bios/s390-ccw"
2316    config_mak=pc-bios/s390-ccw/config-host.mak
2317    echo "# Automatically generated by configure - do not modify" > $config_mak
2318    echo "SRC_PATH=$source_path/pc-bios/s390-ccw" >> $config_mak
2319    write_target_makefile >> $config_mak
2320    # SLOF is required for building the s390-ccw firmware on s390x,
2321    # since it is using the libnet code from SLOF for network booting.
2322    git_submodules="${git_submodules} roms/SLOF"
2323  fi
2324fi
2325
2326#######################################
2327# generate config-host.mak
2328
2329if ! (GIT="$git" "$source_path/scripts/git-submodule.sh" "$git_submodules_action" "$git_submodules"); then
2330    exit 1
2331fi
2332
2333config_host_mak="config-host.mak"
2334
2335echo "# Automatically generated by configure - do not modify" > $config_host_mak
2336echo >> $config_host_mak
2337
2338echo all: >> $config_host_mak
2339echo "GIT=$git" >> $config_host_mak
2340echo "GIT_SUBMODULES=$git_submodules" >> $config_host_mak
2341echo "GIT_SUBMODULES_ACTION=$git_submodules_action" >> $config_host_mak
2342
2343if test "$debug_tcg" = "yes" ; then
2344  echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
2345fi
2346if test "$mingw32" = "yes" ; then
2347  echo "CONFIG_WIN32=y" >> $config_host_mak
2348  echo "QEMU_GA_MANUFACTURER=${QEMU_GA_MANUFACTURER-QEMU}" >> $config_host_mak
2349  echo "QEMU_GA_DISTRO=${QEMU_GA_DISTRO-Linux}" >> $config_host_mak
2350  echo "QEMU_GA_VERSION=${QEMU_GA_VERSION-$(cat "$source_path"/VERSION)}" >> $config_host_mak
2351else
2352  echo "CONFIG_POSIX=y" >> $config_host_mak
2353fi
2354
2355if test "$linux" = "yes" ; then
2356  echo "CONFIG_LINUX=y" >> $config_host_mak
2357fi
2358
2359if test "$darwin" = "yes" ; then
2360  echo "CONFIG_DARWIN=y" >> $config_host_mak
2361fi
2362
2363if test "$solaris" = "yes" ; then
2364  echo "CONFIG_SOLARIS=y" >> $config_host_mak
2365fi
2366if test "$static" = "yes" ; then
2367  echo "CONFIG_STATIC=y" >> $config_host_mak
2368fi
2369echo "SRC_PATH=$source_path" >> $config_host_mak
2370echo "TARGET_DIRS=$target_list" >> $config_host_mak
2371if test "$modules" = "yes"; then
2372  echo "CONFIG_MODULES=y" >> $config_host_mak
2373fi
2374
2375# XXX: suppress that
2376if [ "$bsd" = "yes" ] ; then
2377  echo "CONFIG_BSD=y" >> $config_host_mak
2378fi
2379
2380echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
2381
2382if test "$have_asan_iface_fiber" = "yes" ; then
2383    echo "CONFIG_ASAN_IFACE_FIBER=y" >> $config_host_mak
2384fi
2385
2386if test "$have_tsan" = "yes" && test "$have_tsan_iface_fiber" = "yes" ; then
2387    echo "CONFIG_TSAN=y" >> $config_host_mak
2388fi
2389
2390if test "$plugins" = "yes" ; then
2391    echo "CONFIG_PLUGIN=y" >> $config_host_mak
2392fi
2393
2394if test -n "$gdb_bin"; then
2395    gdb_version=$($gdb_bin --version | head -n 1)
2396    if version_ge ${gdb_version##* } 9.1; then
2397        echo "HAVE_GDB_BIN=$gdb_bin" >> $config_host_mak
2398    else
2399        gdb_bin=""
2400    fi
2401fi
2402
2403if test "$container" != no; then
2404    echo "ENGINE=$container" >> $config_host_mak
2405    echo "RUNC=$runc" >> $config_host_mak
2406fi
2407echo "ROMS=$roms" >> $config_host_mak
2408echo "MAKE=$make" >> $config_host_mak
2409echo "PYTHON=$python" >> $config_host_mak
2410echo "GENISOIMAGE=$genisoimage" >> $config_host_mak
2411echo "MESON=$meson" >> $config_host_mak
2412echo "NINJA=$ninja" >> $config_host_mak
2413echo "CC=$cc" >> $config_host_mak
2414echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak
2415echo "QEMU_OBJCFLAGS=$QEMU_OBJCFLAGS" >> $config_host_mak
2416echo "GLIB_CFLAGS=$glib_cflags" >> $config_host_mak
2417echo "GLIB_LIBS=$glib_libs" >> $config_host_mak
2418echo "GLIB_BINDIR=$glib_bindir" >> $config_host_mak
2419echo "GLIB_VERSION=$($pkg_config --modversion glib-2.0)" >> $config_host_mak
2420echo "QEMU_LDFLAGS=$QEMU_LDFLAGS" >> $config_host_mak
2421echo "EXESUF=$EXESUF" >> $config_host_mak
2422
2423# use included Linux headers
2424if test "$linux" = "yes" ; then
2425  mkdir -p linux-headers
2426  case "$cpu" in
2427  i386|x86_64)
2428    linux_arch=x86
2429    ;;
2430  ppc|ppc64)
2431    linux_arch=powerpc
2432    ;;
2433  s390x)
2434    linux_arch=s390
2435    ;;
2436  aarch64)
2437    linux_arch=arm64
2438    ;;
2439  loongarch*)
2440    linux_arch=loongarch
2441    ;;
2442  mips64)
2443    linux_arch=mips
2444    ;;
2445  *)
2446    # For most CPUs the kernel architecture name and QEMU CPU name match.
2447    linux_arch="$cpu"
2448    ;;
2449  esac
2450    # For non-KVM architectures we will not have asm headers
2451    if [ -e "$source_path/linux-headers/asm-$linux_arch" ]; then
2452      symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
2453    fi
2454fi
2455
2456for target in $target_list; do
2457    target_dir="$target"
2458    target_name=$(echo $target | cut -d '-' -f 1)$EXESUF
2459    mkdir -p "$target_dir"
2460    case $target in
2461        *-user) symlink "../qemu-$target_name" "$target_dir/qemu-$target_name" ;;
2462        *) symlink "../qemu-system-$target_name" "$target_dir/qemu-system-$target_name" ;;
2463    esac
2464done
2465
2466if test "$default_targets" = "yes"; then
2467  echo "CONFIG_DEFAULT_TARGETS=y" >> $config_host_mak
2468fi
2469
2470if test "$ccache_cpp2" = "yes"; then
2471  echo "export CCACHE_CPP2=y" >> $config_host_mak
2472fi
2473
2474if test "$safe_stack" = "yes"; then
2475  echo "CONFIG_SAFESTACK=y" >> $config_host_mak
2476fi
2477
2478# tests/tcg configuration
2479(config_host_mak=tests/tcg/config-host.mak
2480mkdir -p tests/tcg
2481echo "# Automatically generated by configure - do not modify" > $config_host_mak
2482echo "SRC_PATH=$source_path" >> $config_host_mak
2483echo "HOST_CC=$host_cc" >> $config_host_mak
2484
2485# versioned checked in the main config_host.mak above
2486if test -n "$gdb_bin"; then
2487    echo "HAVE_GDB_BIN=$gdb_bin" >> $config_host_mak
2488fi
2489if test "$plugins" = "yes" ; then
2490    echo "CONFIG_PLUGIN=y" >> $config_host_mak
2491fi
2492
2493tcg_tests_targets=
2494for target in $target_list; do
2495  arch=${target%%-*}
2496
2497  case $target in
2498    xtensa*-linux-user)
2499      # the toolchain is not complete with headers, only build softmmu tests
2500      continue
2501      ;;
2502    *-softmmu)
2503      test -f "$source_path/tests/tcg/$arch/Makefile.softmmu-target" || continue
2504      qemu="qemu-system-$arch"
2505      ;;
2506    *-linux-user|*-bsd-user)
2507      qemu="qemu-$arch"
2508      ;;
2509  esac
2510
2511  if probe_target_compiler $target || test -n "$container_image"; then
2512      test -n "$container_image" && build_static=y
2513      mkdir -p "tests/tcg/$target"
2514      config_target_mak=tests/tcg/$target/config-target.mak
2515      ln -sf "$source_path/tests/tcg/Makefile.target" "tests/tcg/$target/Makefile"
2516      echo "# Automatically generated by configure - do not modify" > "$config_target_mak"
2517      echo "TARGET_NAME=$arch" >> "$config_target_mak"
2518      echo "TARGET=$target" >> "$config_target_mak"
2519      write_target_makefile "build-tcg-tests-$target" >> "$config_target_mak"
2520      echo "BUILD_STATIC=$build_static" >> "$config_target_mak"
2521      echo "QEMU=$PWD/$qemu" >> "$config_target_mak"
2522      echo "run-tcg-tests-$target: $qemu\$(EXESUF)" >> Makefile.prereqs
2523      tcg_tests_targets="$tcg_tests_targets $target"
2524  fi
2525done
2526
2527if test "$tcg" = "enabled"; then
2528    echo "TCG_TESTS_TARGETS=$tcg_tests_targets" >> config-host.mak
2529fi
2530)
2531
2532if test "$skip_meson" = no; then
2533  cross="config-meson.cross.new"
2534  meson_quote() {
2535    test $# = 0 && return
2536    echo "'$(echo $* | sed "s/ /','/g")'"
2537  }
2538
2539  echo "# Automatically generated by configure - do not modify" > $cross
2540  echo "[properties]" >> $cross
2541
2542  # unroll any custom device configs
2543  for a in $device_archs; do
2544      eval "c=\$devices_${a}"
2545      echo "${a}-softmmu = '$c'" >> $cross
2546  done
2547
2548  echo "[built-in options]" >> $cross
2549  echo "c_args = [$(meson_quote $CFLAGS $EXTRA_CFLAGS)]" >> $cross
2550  echo "cpp_args = [$(meson_quote $CXXFLAGS $EXTRA_CXXFLAGS)]" >> $cross
2551  test -n "$objcc" && echo "objc_args = [$(meson_quote $OBJCFLAGS $EXTRA_OBJCFLAGS)]" >> $cross
2552  echo "c_link_args = [$(meson_quote $CFLAGS $LDFLAGS $EXTRA_CFLAGS $EXTRA_LDFLAGS)]" >> $cross
2553  echo "cpp_link_args = [$(meson_quote $CXXFLAGS $LDFLAGS $EXTRA_CXXFLAGS $EXTRA_LDFLAGS)]" >> $cross
2554  echo "[binaries]" >> $cross
2555  echo "c = [$(meson_quote $cc $CPU_CFLAGS)]" >> $cross
2556  test -n "$cxx" && echo "cpp = [$(meson_quote $cxx $CPU_CFLAGS)]" >> $cross
2557  test -n "$objcc" && echo "objc = [$(meson_quote $objcc $CPU_CFLAGS)]" >> $cross
2558  echo "ar = [$(meson_quote $ar)]" >> $cross
2559  echo "nm = [$(meson_quote $nm)]" >> $cross
2560  echo "pkgconfig = [$(meson_quote $pkg_config_exe)]" >> $cross
2561  echo "ranlib = [$(meson_quote $ranlib)]" >> $cross
2562  if has $sdl2_config; then
2563    echo "sdl2-config = [$(meson_quote $sdl2_config)]" >> $cross
2564  fi
2565  echo "strip = [$(meson_quote $strip)]" >> $cross
2566  echo "widl = [$(meson_quote $widl)]" >> $cross
2567  echo "windres = [$(meson_quote $windres)]" >> $cross
2568  echo "windmc = [$(meson_quote $windmc)]" >> $cross
2569  if test "$cross_compile" = "yes"; then
2570    cross_arg="--cross-file config-meson.cross"
2571    echo "[host_machine]" >> $cross
2572    echo "system = '$targetos'" >> $cross
2573    case "$cpu" in
2574        i386)
2575            echo "cpu_family = 'x86'" >> $cross
2576            ;;
2577        *)
2578            echo "cpu_family = '$cpu'" >> $cross
2579            ;;
2580    esac
2581    echo "cpu = '$cpu'" >> $cross
2582    if test "$bigendian" = "yes" ; then
2583        echo "endian = 'big'" >> $cross
2584    else
2585        echo "endian = 'little'" >> $cross
2586    fi
2587  else
2588    cross_arg="--native-file config-meson.cross"
2589  fi
2590  mv $cross config-meson.cross
2591
2592  rm -rf meson-private meson-info meson-logs
2593
2594  # Built-in options
2595  test "$bindir" != "bin" && meson_option_add "-Dbindir=$bindir"
2596  test "$default_feature" = no && meson_option_add -Dauto_features=disabled
2597  test "$pie" = no && meson_option_add -Db_pie=false
2598  test "$werror" = yes && meson_option_add -Dwerror=true
2599
2600  # QEMU options
2601  test "$cfi" != false && meson_option_add "-Dcfi=$cfi"
2602  test "$fdt" != auto && meson_option_add "-Dfdt=$fdt"
2603  test -n "${LIB_FUZZING_ENGINE+xxx}" && meson_option_add "-Dfuzzing_engine=$LIB_FUZZING_ENGINE"
2604  test "$qemu_suffix" != qemu && meson_option_add "-Dqemu_suffix=$qemu_suffix"
2605  test "$smbd" != '' && meson_option_add "-Dsmbd=$smbd"
2606  test "$tcg" != enabled && meson_option_add "-Dtcg=$tcg"
2607  test "$vfio_user_server" != auto && meson_option_add "-Dvfio_user_server=$vfio_user_server"
2608  run_meson() {
2609    NINJA=$ninja $meson setup --prefix "$prefix" "$@" $cross_arg "$PWD" "$source_path"
2610  }
2611  eval run_meson $meson_options
2612  if test "$?" -ne 0 ; then
2613      error_exit "meson setup failed"
2614  fi
2615fi
2616
2617# Save the configure command line for later reuse.
2618cat <<EOD >config.status
2619#!/bin/sh
2620# Generated by configure.
2621# Run this file to recreate the current configuration.
2622# Compiler output produced by configure, useful for debugging
2623# configure, is in config.log if it exists.
2624EOD
2625
2626preserve_env() {
2627    envname=$1
2628
2629    eval envval=\$$envname
2630
2631    if test -n "$envval"
2632    then
2633	echo "$envname='$envval'" >> config.status
2634	echo "export $envname" >> config.status
2635    else
2636	echo "unset $envname" >> config.status
2637    fi
2638}
2639
2640# Preserve various env variables that influence what
2641# features/build target configure will detect
2642preserve_env AR
2643preserve_env AS
2644preserve_env CC
2645preserve_env CFLAGS
2646preserve_env CXX
2647preserve_env CXXFLAGS
2648preserve_env LD
2649preserve_env LDFLAGS
2650preserve_env LD_LIBRARY_PATH
2651preserve_env MAKE
2652preserve_env NM
2653preserve_env OBJCFLAGS
2654preserve_env OBJCOPY
2655preserve_env PATH
2656preserve_env PKG_CONFIG
2657preserve_env PKG_CONFIG_LIBDIR
2658preserve_env PKG_CONFIG_PATH
2659preserve_env PYTHON
2660preserve_env QEMU_GA_MANUFACTURER
2661preserve_env QEMU_GA_DISTRO
2662preserve_env QEMU_GA_VERSION
2663preserve_env SDL2_CONFIG
2664preserve_env SMBD
2665preserve_env STRIP
2666preserve_env WIDL
2667preserve_env WINDRES
2668preserve_env WINDMC
2669
2670printf "exec" >>config.status
2671for i in "$0" "$@"; do
2672  test "$i" = --skip-meson || printf " %s" "$(quote_sh "$i")" >>config.status
2673done
2674echo ' "$@"' >>config.status
2675chmod +x config.status
2676
2677rm -r "$TMPDIR1"
2678