xref: /openbmc/qemu/configure (revision 37094b6d)
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    mkdir build
35    touch $MARKER
36
37    cat > GNUmakefile <<'EOF'
38# This file is auto-generated by configure to support in-source tree
39# 'make' command invocation
40
41ifeq ($(MAKECMDGOALS),)
42recurse: all
43endif
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
54force: ;
55.PHONY: force
56GNUmakefile: ;
57
58EOF
59    cd build
60    exec $source_path/configure "$@"
61fi
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.)
68TMPDIR1="config-temp"
69rm -rf "${TMPDIR1}"
70mkdir -p "${TMPDIR1}"
71if [ $? -ne 0 ]; then
72    echo "ERROR: failed to create temporary directory"
73    exit 1
74fi
75
76TMPB="qemu-conf"
77TMPC="${TMPDIR1}/${TMPB}.c"
78TMPO="${TMPDIR1}/${TMPB}.o"
79TMPCXX="${TMPDIR1}/${TMPB}.cxx"
80TMPM="${TMPDIR1}/${TMPB}.m"
81TMPE="${TMPDIR1}/${TMPB}.exe"
82
83rm -f config.log
84
85# Print a helpful header at the top of config.log
86echo "# QEMU configure log $(date)" >> config.log
87printf "# Configured with:" >> config.log
88printf " '%s'" "$0" "$@" >> config.log
89echo >> config.log
90echo "#" >> config.log
91
92quote_sh() {
93    printf "%s" "$1" | sed "s,','\\\\'',g; s,.*,'&',"
94}
95
96print_error() {
97    (echo
98    echo "ERROR: $1"
99    while test -n "$2"; do
100        echo "       $2"
101        shift
102    done
103    echo) >&2
104}
105
106error_exit() {
107    print_error "$@"
108    exit 1
109}
110
111do_compiler() {
112    # Run the compiler, capturing its output to the log. First argument
113    # is compiler binary to execute.
114    compiler="$1"
115    shift
116    if test -n "$BASH_VERSION"; then eval '
117        echo >>config.log "
118funcs: ${FUNCNAME[*]}
119lines: ${BASH_LINENO[*]}"
120    '; fi
121    echo $compiler "$@" >> config.log
122    $compiler "$@" >> config.log 2>&1 || return $?
123    # Test passed. If this is an --enable-werror build, rerun
124    # the test with -Werror and bail out if it fails. This
125    # makes warning-generating-errors in configure test code
126    # obvious to developers.
127    if test "$werror" != "yes"; then
128        return 0
129    fi
130    # Don't bother rerunning the compile if we were already using -Werror
131    case "$*" in
132        *-Werror*)
133           return 0
134        ;;
135    esac
136    echo $compiler -Werror "$@" >> config.log
137    $compiler -Werror "$@" >> config.log 2>&1 && return $?
138    error_exit "configure test passed without -Werror but failed with -Werror." \
139        "This is probably a bug in the configure script. The failing command" \
140        "will be at the bottom of config.log." \
141        "You can run configure with --disable-werror to bypass this check."
142}
143
144do_cc() {
145    do_compiler "$cc" $CPU_CFLAGS "$@"
146}
147
148do_cxx() {
149    do_compiler "$cxx" $CPU_CFLAGS "$@"
150}
151
152do_objc() {
153    do_compiler "$objcc" $CPU_CFLAGS "$@"
154}
155
156# Append $2 to the variable named $1, with space separation
157add_to() {
158    eval $1=\${$1:+\"\$$1 \"}\$2
159}
160
161update_cxxflags() {
162    # Set QEMU_CXXFLAGS from QEMU_CFLAGS by filtering out those
163    # options which some versions of GCC's C++ compiler complain about
164    # because they only make sense for C programs.
165    QEMU_CXXFLAGS="-D__STDC_LIMIT_MACROS -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS"
166    CONFIGURE_CXXFLAGS=$(echo "$CONFIGURE_CFLAGS" | sed s/-std=gnu11/-std=gnu++11/)
167    for arg in $QEMU_CFLAGS; do
168        case $arg in
169            -Wstrict-prototypes|-Wmissing-prototypes|-Wnested-externs|\
170            -Wold-style-declaration|-Wold-style-definition|-Wredundant-decls)
171                ;;
172            *)
173                QEMU_CXXFLAGS=${QEMU_CXXFLAGS:+$QEMU_CXXFLAGS }$arg
174                ;;
175        esac
176    done
177}
178
179compile_object() {
180  local_cflags="$1"
181  do_cc $CFLAGS $EXTRA_CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -c -o $TMPO $TMPC
182}
183
184compile_prog() {
185  local_cflags="$1"
186  local_ldflags="$2"
187  do_cc $CFLAGS $EXTRA_CFLAGS $CONFIGURE_CFLAGS $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC \
188      $LDFLAGS $EXTRA_LDFLAGS $CONFIGURE_LDFLAGS $QEMU_LDFLAGS $local_ldflags
189}
190
191# symbolically link $1 to $2.  Portable version of "ln -sf".
192symlink() {
193  rm -rf "$2"
194  mkdir -p "$(dirname "$2")"
195  ln -s "$1" "$2"
196}
197
198# check whether a command is available to this shell (may be either an
199# executable or a builtin)
200has() {
201    type "$1" >/dev/null 2>&1
202}
203
204version_ge () {
205    local_ver1=$(expr "$1" : '\([0-9.]*\)' | tr . ' ')
206    local_ver2=$(echo "$2" | tr . ' ')
207    while true; do
208        set x $local_ver1
209        local_first=${2-0}
210        # 'shift 2' if $2 is set, or 'shift' if $2 is not set
211        shift ${2:+2}
212        local_ver1=$*
213        set x $local_ver2
214        # the second argument finished, the first must be greater or equal
215        test $# = 1 && return 0
216        test $local_first -lt $2 && return 1
217        test $local_first -gt $2 && return 0
218        shift ${2:+2}
219        local_ver2=$*
220    done
221}
222
223glob() {
224    eval test -z '"${1#'"$2"'}"'
225}
226
227ld_has() {
228    $ld --help 2>/dev/null | grep ".$1" >/dev/null 2>&1
229}
230
231if printf %s\\n "$source_path" "$PWD" | grep -q "[[:space:]:]";
232then
233  error_exit "main directory cannot contain spaces nor colons"
234fi
235
236# default parameters
237cpu=""
238iasl="iasl"
239interp_prefix="/usr/gnemul/qemu-%M"
240static="no"
241cross_compile="no"
242cross_prefix=""
243audio_drv_list="default"
244block_drv_rw_whitelist=""
245block_drv_ro_whitelist=""
246host_cc="cc"
247debug_info="yes"
248lto="false"
249stack_protector=""
250safe_stack=""
251use_containers="yes"
252gdb_bin=$(command -v "gdb-multiarch" || command -v "gdb")
253
254if test -e "$source_path/.git"
255then
256    git_submodules_action="update"
257else
258    git_submodules_action="ignore"
259fi
260
261git_submodules="ui/keycodemapdb"
262git="git"
263
264# Don't accept a target_list environment variable.
265unset target_list
266unset target_list_exclude
267
268# Default value for a variable defining feature "foo".
269#  * foo="no"  feature will only be used if --enable-foo arg is given
270#  * foo=""    feature will be searched for, and if found, will be used
271#              unless --disable-foo is given
272#  * foo="yes" this value will only be set by --enable-foo flag.
273#              feature will searched for,
274#              if not found, configure exits with error
275#
276# Always add --enable-foo and --disable-foo command line args.
277# Distributions want to ensure that several features are compiled in, and it
278# is impossible without a --enable-foo that exits if a feature is not found.
279
280default_feature=""
281# parse CC options second
282for opt do
283  optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
284  case "$opt" in
285      --without-default-features)
286          default_feature="no"
287  ;;
288  esac
289done
290
291EXTRA_CFLAGS=""
292EXTRA_CXXFLAGS=""
293EXTRA_OBJCFLAGS=""
294EXTRA_LDFLAGS=""
295
296xen_ctrl_version="$default_feature"
297vhost_kernel="$default_feature"
298vhost_net="$default_feature"
299vhost_crypto="$default_feature"
300vhost_scsi="$default_feature"
301vhost_vsock="$default_feature"
302vhost_user="no"
303vhost_user_fs="$default_feature"
304vhost_vdpa="$default_feature"
305rdma="$default_feature"
306pvrdma="$default_feature"
307debug_tcg="no"
308debug="no"
309sanitizers="no"
310tsan="no"
311fortify_source="$default_feature"
312gcov="no"
313EXESUF=""
314modules="no"
315module_upgrades="no"
316prefix="/usr/local"
317qemu_suffix="qemu"
318softmmu="yes"
319linux_user=""
320bsd_user=""
321pkgversion=""
322pie=""
323trace_backends="log"
324trace_file="trace"
325opengl="$default_feature"
326coroutine=""
327tls_priority="NORMAL"
328plugins="$default_feature"
329secret_keyring="$default_feature"
330meson=""
331meson_args=""
332ninja=""
333gio="$default_feature"
334skip_meson=no
335
336# The following Meson options are handled manually (still they
337# are included in the automatically generated help message)
338
339# 1. Track which submodules are needed
340if test "$default_feature" = no ; then
341  capstone="disabled"
342  slirp="disabled"
343else
344  capstone="auto"
345  slirp="auto"
346fi
347fdt="auto"
348
349# 2. Support --with/--without option
350default_devices="true"
351
352# 3. Automatically enable/disable other options
353tcg="enabled"
354cfi="false"
355
356# 4. Detection partly done in configure
357xen=${default_feature:+disabled}
358
359# parse CC options second
360for opt do
361  optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
362  case "$opt" in
363  --cross-prefix=*) cross_prefix="$optarg"
364                    cross_compile="yes"
365  ;;
366  --cc=*) CC="$optarg"
367  ;;
368  --cxx=*) CXX="$optarg"
369  ;;
370  --cpu=*) cpu="$optarg"
371  ;;
372  --extra-cflags=*)
373    EXTRA_CFLAGS="$EXTRA_CFLAGS $optarg"
374    EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
375    EXTRA_OBJCFLAGS="$EXTRA_OBJCFLAGS $optarg"
376    ;;
377  --extra-cxxflags=*) EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS $optarg"
378  ;;
379  --extra-objcflags=*) EXTRA_OBJCFLAGS="$EXTRA_OBJCFLAGS $optarg"
380  ;;
381  --extra-ldflags=*) EXTRA_LDFLAGS="$EXTRA_LDFLAGS $optarg"
382  ;;
383  --enable-debug-info) debug_info="yes"
384  ;;
385  --disable-debug-info) debug_info="no"
386  ;;
387  --cross-cc-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-cc-FOO option"
388  ;;
389  --cross-cc-cflags-*) cc_arch=${opt#--cross-cc-cflags-}; cc_arch=${cc_arch%%=*}
390                      eval "cross_cc_cflags_${cc_arch}=\$optarg"
391                      cross_cc_vars="$cross_cc_vars cross_cc_cflags_${cc_arch}"
392  ;;
393  --cross-cc-*) cc_arch=${opt#--cross-cc-}; cc_arch=${cc_arch%%=*}
394                cc_archs="$cc_archs $cc_arch"
395                eval "cross_cc_${cc_arch}=\$optarg"
396                cross_cc_vars="$cross_cc_vars cross_cc_${cc_arch}"
397  ;;
398  esac
399done
400# OS specific
401# Using uname is really, really broken.  Once we have the right set of checks
402# we can eliminate its usage altogether.
403
404# Preferred compiler:
405#  ${CC} (if set)
406#  ${cross_prefix}gcc (if cross-prefix specified)
407#  system compiler
408if test -z "${CC}${cross_prefix}"; then
409  cc="$host_cc"
410else
411  cc="${CC-${cross_prefix}gcc}"
412fi
413
414if test -z "${CXX}${cross_prefix}"; then
415  cxx="c++"
416else
417  cxx="${CXX-${cross_prefix}g++}"
418fi
419
420ar="${AR-${cross_prefix}ar}"
421as="${AS-${cross_prefix}as}"
422ccas="${CCAS-$cc}"
423cpp="${CPP-$cc -E}"
424objcopy="${OBJCOPY-${cross_prefix}objcopy}"
425ld="${LD-${cross_prefix}ld}"
426ranlib="${RANLIB-${cross_prefix}ranlib}"
427nm="${NM-${cross_prefix}nm}"
428smbd="$SMBD"
429strip="${STRIP-${cross_prefix}strip}"
430windres="${WINDRES-${cross_prefix}windres}"
431pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
432query_pkg_config() {
433    "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
434}
435pkg_config=query_pkg_config
436sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"
437
438# default flags for all hosts
439# We use -fwrapv to tell the compiler that we require a C dialect where
440# left shift of signed integers is well defined and has the expected
441# 2s-complement style results. (Both clang and gcc agree that it
442# provides these semantics.)
443QEMU_CFLAGS="-fno-strict-aliasing -fno-common -fwrapv"
444QEMU_CFLAGS="-Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
445QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
446QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
447
448QEMU_LDFLAGS=
449
450# Flags that are needed during configure but later taken care of by Meson
451CONFIGURE_CFLAGS="-std=gnu11 -Wall"
452CONFIGURE_LDFLAGS=
453
454
455check_define() {
456cat > $TMPC <<EOF
457#if !defined($1)
458#error $1 not defined
459#endif
460int main(void) { return 0; }
461EOF
462  compile_object
463}
464
465check_include() {
466cat > $TMPC <<EOF
467#include <$1>
468int main(void) { return 0; }
469EOF
470  compile_object
471}
472
473write_c_skeleton() {
474    cat > $TMPC <<EOF
475int main(void) { return 0; }
476EOF
477}
478
479if check_define __linux__ ; then
480  targetos=linux
481elif check_define _WIN32 ; then
482  targetos=windows
483elif check_define __OpenBSD__ ; then
484  targetos=openbsd
485elif check_define __sun__ ; then
486  targetos=sunos
487elif check_define __HAIKU__ ; then
488  targetos=haiku
489elif check_define __FreeBSD__ ; then
490  targetos=freebsd
491elif check_define __FreeBSD_kernel__ && check_define __GLIBC__; then
492  targetos=gnu/kfreebsd
493elif check_define __DragonFly__ ; then
494  targetos=dragonfly
495elif check_define __NetBSD__; then
496  targetos=netbsd
497elif check_define __APPLE__; then
498  targetos=darwin
499else
500  # This is a fatal error, but don't report it yet, because we
501  # might be going to just print the --help text, or it might
502  # be the result of a missing compiler.
503  targetos=bogus
504fi
505
506# OS specific
507
508mingw32="no"
509bsd="no"
510linux="no"
511solaris="no"
512case $targetos in
513windows)
514  mingw32="yes"
515  plugins="no"
516  pie="no"
517;;
518gnu/kfreebsd)
519  bsd="yes"
520;;
521freebsd)
522  bsd="yes"
523  make="${MAKE-gmake}"
524  # needed for kinfo_getvmmap(3) in libutil.h
525;;
526dragonfly)
527  bsd="yes"
528  make="${MAKE-gmake}"
529;;
530netbsd)
531  bsd="yes"
532  make="${MAKE-gmake}"
533;;
534openbsd)
535  bsd="yes"
536  make="${MAKE-gmake}"
537;;
538darwin)
539  bsd="yes"
540  darwin="yes"
541  # Disable attempts to use ObjectiveC features in os/object.h since they
542  # won't work when we're compiling with gcc as a C compiler.
543  QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
544;;
545sunos)
546  solaris="yes"
547  make="${MAKE-gmake}"
548# needed for CMSG_ macros in sys/socket.h
549  QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
550# needed for TIOCWIN* defines in termios.h
551  QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
552  # $(uname -m) returns i86pc even on an x86_64 box, so default based on isainfo
553  # Note that this check is broken for cross-compilation: if you're
554  # cross-compiling to one of these OSes then you'll need to specify
555  # the correct CPU with the --cpu option.
556  if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then
557    cpu="x86_64"
558  fi
559;;
560haiku)
561  pie="no"
562  QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS -D_BSD_SOURCE -fPIC $QEMU_CFLAGS"
563;;
564linux)
565  linux="yes"
566  vhost_user=${default_feature:-yes}
567;;
568esac
569
570if test ! -z "$cpu" ; then
571  # command line argument
572  :
573elif check_define __i386__ ; then
574  cpu="i386"
575elif check_define __x86_64__ ; then
576  if check_define __ILP32__ ; then
577    cpu="x32"
578  else
579    cpu="x86_64"
580  fi
581elif check_define __sparc__ ; then
582  if check_define __arch64__ ; then
583    cpu="sparc64"
584  else
585    cpu="sparc"
586  fi
587elif check_define _ARCH_PPC ; then
588  if check_define _ARCH_PPC64 ; then
589    if check_define _LITTLE_ENDIAN ; then
590      cpu="ppc64le"
591    else
592      cpu="ppc64"
593    fi
594  else
595    cpu="ppc"
596  fi
597elif check_define __mips__ ; then
598  cpu="mips"
599elif check_define __s390__ ; then
600  if check_define __s390x__ ; then
601    cpu="s390x"
602  else
603    cpu="s390"
604  fi
605elif check_define __riscv ; then
606  cpu="riscv"
607elif check_define __arm__ ; then
608  cpu="arm"
609elif check_define __aarch64__ ; then
610  cpu="aarch64"
611elif check_define __loongarch64 ; then
612  cpu="loongarch64"
613else
614  cpu=$(uname -m)
615fi
616
617# Normalise host CPU name, set multilib cflags
618# Note that this case should only have supported host CPUs, not guests.
619case "$cpu" in
620  armv*b|armv*l|arm)
621    cpu="arm" ;;
622
623  i386|i486|i586|i686|i86pc|BePC)
624    cpu="i386"
625    CPU_CFLAGS="-m32" ;;
626  x32)
627    cpu="x86_64"
628    CPU_CFLAGS="-mx32" ;;
629  x86_64|amd64)
630    cpu="x86_64"
631    # ??? Only extremely old AMD cpus do not have cmpxchg16b.
632    # If we truly care, we should simply detect this case at
633    # runtime and generate the fallback to serial emulation.
634    CPU_CFLAGS="-m64 -mcx16" ;;
635
636  mips*)
637    cpu="mips" ;;
638
639  ppc)
640    CPU_CFLAGS="-m32" ;;
641  ppc64)
642    CPU_CFLAGS="-m64 -mbig-endian" ;;
643  ppc64le)
644    cpu="ppc64"
645    CPU_CFLAGS="-m64 -mlittle-endian" ;;
646
647  s390)
648    CPU_CFLAGS="-m31" ;;
649  s390x)
650    CPU_CFLAGS="-m64" ;;
651
652  sparc|sun4[cdmuv])
653    cpu="sparc"
654    CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc" ;;
655  sparc64)
656    CPU_CFLAGS="-m64 -mcpu=ultrasparc" ;;
657esac
658
659: ${make=${MAKE-make}}
660
661# We prefer python 3.x. A bare 'python' is traditionally
662# python 2.x, but some distros have it as python 3.x, so
663# we check that too
664python=
665explicit_python=no
666for binary in "${PYTHON-python3}" python
667do
668    if has "$binary"
669    then
670        python=$(command -v "$binary")
671        break
672    fi
673done
674
675
676# Check for ancillary tools used in testing
677genisoimage=
678for binary in genisoimage mkisofs
679do
680    if has $binary
681    then
682        genisoimage=$(command -v "$binary")
683        break
684    fi
685done
686
687# Default objcc to clang if available, otherwise use CC
688if has clang; then
689  objcc=clang
690else
691  objcc="$cc"
692fi
693
694if test "$mingw32" = "yes" ; then
695  EXESUF=".exe"
696  # MinGW needs -mthreads for TLS and macro _MT.
697  CONFIGURE_CFLAGS="-mthreads $CONFIGURE_CFLAGS"
698  write_c_skeleton;
699  prefix="/qemu"
700  qemu_suffix=""
701fi
702
703werror=""
704
705. $source_path/scripts/meson-buildoptions.sh
706
707meson_options=
708meson_option_parse() {
709  meson_options="$meson_options $(_meson_option_parse "$@")"
710  if test $? -eq 1; then
711    echo "ERROR: unknown option $1"
712    echo "Try '$0 --help' for more information"
713    exit 1
714  fi
715}
716
717for opt do
718  optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
719  case "$opt" in
720  --help|-h) show_help=yes
721  ;;
722  --version|-V) exec cat $source_path/VERSION
723  ;;
724  --prefix=*) prefix="$optarg"
725  ;;
726  --interp-prefix=*) interp_prefix="$optarg"
727  ;;
728  --cross-prefix=*)
729  ;;
730  --cc=*)
731  ;;
732  --host-cc=*) host_cc="$optarg"
733  ;;
734  --cxx=*)
735  ;;
736  --iasl=*) iasl="$optarg"
737  ;;
738  --objcc=*) objcc="$optarg"
739  ;;
740  --make=*) make="$optarg"
741  ;;
742  --install=*)
743  ;;
744  --python=*) python="$optarg" ; explicit_python=yes
745  ;;
746  --sphinx-build=*) sphinx_build="$optarg"
747  ;;
748  --skip-meson) skip_meson=yes
749  ;;
750  --meson=*) meson="$optarg"
751  ;;
752  --ninja=*) ninja="$optarg"
753  ;;
754  --smbd=*) smbd="$optarg"
755  ;;
756  --extra-cflags=*)
757  ;;
758  --extra-cxxflags=*)
759  ;;
760  --extra-objcflags=*)
761  ;;
762  --extra-ldflags=*)
763  ;;
764  --enable-debug-info)
765  ;;
766  --disable-debug-info)
767  ;;
768  --cross-cc-*)
769  ;;
770  --enable-modules)
771      modules="yes"
772  ;;
773  --disable-modules)
774      modules="no"
775  ;;
776  --disable-module-upgrades) module_upgrades="no"
777  ;;
778  --enable-module-upgrades) module_upgrades="yes"
779  ;;
780  --cpu=*)
781  ;;
782  --target-list=*) target_list="$optarg"
783                   if test "$target_list_exclude"; then
784                       error_exit "Can't mix --target-list with --target-list-exclude"
785                   fi
786  ;;
787  --target-list-exclude=*) target_list_exclude="$optarg"
788                   if test "$target_list"; then
789                       error_exit "Can't mix --target-list-exclude with --target-list"
790                   fi
791  ;;
792  --with-trace-file=*) trace_file="$optarg"
793  ;;
794  --with-default-devices) default_devices="true"
795  ;;
796  --without-default-devices) default_devices="false"
797  ;;
798  --with-devices-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --with-devices-FOO option"
799  ;;
800  --with-devices-*) device_arch=${opt#--with-devices-};
801                    device_arch=${device_arch%%=*}
802                    cf=$source_path/configs/devices/$device_arch-softmmu/$optarg.mak
803                    if test -f "$cf"; then
804                        device_archs="$device_archs $device_arch"
805                        eval "devices_${device_arch}=\$optarg"
806                    else
807                        error_exit "File $cf does not exist"
808                    fi
809  ;;
810  --without-default-features) # processed above
811  ;;
812  --enable-gcov) gcov="yes"
813  ;;
814  --static)
815    static="yes"
816    QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
817  ;;
818  --mandir=*) mandir="$optarg"
819  ;;
820  --bindir=*) bindir="$optarg"
821  ;;
822  --libdir=*) libdir="$optarg"
823  ;;
824  --libexecdir=*) libexecdir="$optarg"
825  ;;
826  --includedir=*) includedir="$optarg"
827  ;;
828  --datadir=*) datadir="$optarg"
829  ;;
830  --with-suffix=*) qemu_suffix="$optarg"
831  ;;
832  --docdir=*) docdir="$optarg"
833  ;;
834  --localedir=*) localedir="$optarg"
835  ;;
836  --sysconfdir=*) sysconfdir="$optarg"
837  ;;
838  --localstatedir=*) local_statedir="$optarg"
839  ;;
840  --firmwarepath=*) firmwarepath="$optarg"
841  ;;
842  --host=*|--build=*|\
843  --disable-dependency-tracking|\
844  --sbindir=*|--sharedstatedir=*|\
845  --oldincludedir=*|--datarootdir=*|--infodir=*|\
846  --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
847    # These switches are silently ignored, for compatibility with
848    # autoconf-generated configure scripts. This allows QEMU's
849    # configure to be used by RPM and similar macros that set
850    # lots of directory switches by default.
851  ;;
852  --audio-drv-list=*) audio_drv_list="$optarg"
853  ;;
854  --block-drv-rw-whitelist=*|--block-drv-whitelist=*) block_drv_rw_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
855  ;;
856  --block-drv-ro-whitelist=*) block_drv_ro_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
857  ;;
858  --enable-debug-tcg) debug_tcg="yes"
859  ;;
860  --disable-debug-tcg) debug_tcg="no"
861  ;;
862  --enable-debug)
863      # Enable debugging options that aren't excessively noisy
864      debug_tcg="yes"
865      meson_option_parse --enable-debug-mutex ""
866      debug="yes"
867      fortify_source="no"
868  ;;
869  --enable-sanitizers) sanitizers="yes"
870  ;;
871  --disable-sanitizers) sanitizers="no"
872  ;;
873  --enable-tsan) tsan="yes"
874  ;;
875  --disable-tsan) tsan="no"
876  ;;
877  --disable-slirp) slirp="disabled"
878  ;;
879  --enable-slirp) slirp="enabled"
880  ;;
881  --enable-slirp=git) slirp="internal"
882  ;;
883  --enable-slirp=*) slirp="$optarg"
884  ;;
885  --disable-xen) xen="disabled"
886  ;;
887  --enable-xen) xen="enabled"
888  ;;
889  --disable-tcg) tcg="disabled"
890                 plugins="no"
891  ;;
892  --enable-tcg) tcg="enabled"
893  ;;
894  --disable-system) softmmu="no"
895  ;;
896  --enable-system) softmmu="yes"
897  ;;
898  --disable-user)
899      linux_user="no" ;
900      bsd_user="no" ;
901  ;;
902  --enable-user) ;;
903  --disable-linux-user) linux_user="no"
904  ;;
905  --enable-linux-user) linux_user="yes"
906  ;;
907  --disable-bsd-user) bsd_user="no"
908  ;;
909  --enable-bsd-user) bsd_user="yes"
910  ;;
911  --enable-pie) pie="yes"
912  ;;
913  --disable-pie) pie="no"
914  ;;
915  --enable-werror) werror="yes"
916  ;;
917  --disable-werror) werror="no"
918  ;;
919  --enable-lto) lto="true"
920  ;;
921  --disable-lto) lto="false"
922  ;;
923  --enable-stack-protector) stack_protector="yes"
924  ;;
925  --disable-stack-protector) stack_protector="no"
926  ;;
927  --enable-safe-stack) safe_stack="yes"
928  ;;
929  --disable-safe-stack) safe_stack="no"
930  ;;
931  --enable-cfi)
932      cfi="true";
933      lto="true";
934  ;;
935  --disable-cfi) cfi="false"
936  ;;
937  --disable-fdt) fdt="disabled"
938  ;;
939  --enable-fdt) fdt="enabled"
940  ;;
941  --enable-fdt=git) fdt="internal"
942  ;;
943  --enable-fdt=*) fdt="$optarg"
944  ;;
945  --with-pkgversion=*) pkgversion="$optarg"
946  ;;
947  --with-coroutine=*) coroutine="$optarg"
948  ;;
949  --disable-vhost-net) vhost_net="no"
950  ;;
951  --enable-vhost-net) vhost_net="yes"
952  ;;
953  --disable-vhost-crypto) vhost_crypto="no"
954  ;;
955  --enable-vhost-crypto) vhost_crypto="yes"
956  ;;
957  --disable-vhost-scsi) vhost_scsi="no"
958  ;;
959  --enable-vhost-scsi) vhost_scsi="yes"
960  ;;
961  --disable-vhost-vsock) vhost_vsock="no"
962  ;;
963  --enable-vhost-vsock) vhost_vsock="yes"
964  ;;
965  --disable-vhost-user-fs) vhost_user_fs="no"
966  ;;
967  --enable-vhost-user-fs) vhost_user_fs="yes"
968  ;;
969  --disable-opengl) opengl="no"
970  ;;
971  --enable-opengl) opengl="yes"
972  ;;
973  --disable-zlib-test)
974  ;;
975  --disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
976      echo "$0: $opt is obsolete, virtio-blk data-plane is always on" >&2
977  ;;
978  --enable-vhdx|--disable-vhdx)
979      echo "$0: $opt is obsolete, VHDX driver is always built" >&2
980  ;;
981  --enable-uuid|--disable-uuid)
982      echo "$0: $opt is obsolete, UUID support is always built" >&2
983  ;;
984  --tls-priority=*) tls_priority="$optarg"
985  ;;
986  --enable-rdma) rdma="yes"
987  ;;
988  --disable-rdma) rdma="no"
989  ;;
990  --enable-pvrdma) pvrdma="yes"
991  ;;
992  --disable-pvrdma) pvrdma="no"
993  ;;
994  --disable-vhost-user) vhost_user="no"
995  ;;
996  --enable-vhost-user) vhost_user="yes"
997  ;;
998  --disable-vhost-vdpa) vhost_vdpa="no"
999  ;;
1000  --enable-vhost-vdpa) vhost_vdpa="yes"
1001  ;;
1002  --disable-vhost-kernel) vhost_kernel="no"
1003  ;;
1004  --enable-vhost-kernel) vhost_kernel="yes"
1005  ;;
1006  --disable-capstone) capstone="disabled"
1007  ;;
1008  --enable-capstone) capstone="enabled"
1009  ;;
1010  --enable-capstone=git) capstone="internal"
1011  ;;
1012  --enable-capstone=*) capstone="$optarg"
1013  ;;
1014  --with-git=*) git="$optarg"
1015  ;;
1016  --with-git-submodules=*)
1017      git_submodules_action="$optarg"
1018  ;;
1019  --enable-plugins) if test "$mingw32" = "yes"; then
1020                        error_exit "TCG plugins not currently supported on Windows platforms"
1021                    else
1022                        plugins="yes"
1023                    fi
1024  ;;
1025  --disable-plugins) plugins="no"
1026  ;;
1027  --enable-containers) use_containers="yes"
1028  ;;
1029  --disable-containers) use_containers="no"
1030  ;;
1031  --gdb=*) gdb_bin="$optarg"
1032  ;;
1033  --enable-keyring) secret_keyring="yes"
1034  ;;
1035  --disable-keyring) secret_keyring="no"
1036  ;;
1037  --enable-gio) gio=yes
1038  ;;
1039  --disable-gio) gio=no
1040  ;;
1041  # backwards compatibility options
1042  --enable-trace-backend=*) meson_option_parse "--enable-trace-backends=$optarg" "$optarg"
1043  ;;
1044  --disable-blobs) meson_option_parse --disable-install-blobs ""
1045  ;;
1046  --enable-tcmalloc) meson_option_parse --enable-malloc=tcmalloc tcmalloc
1047  ;;
1048  --enable-jemalloc) meson_option_parse --enable-malloc=jemalloc jemalloc
1049  ;;
1050  # everything else has the same name in configure and meson
1051  --enable-* | --disable-*) meson_option_parse "$opt" "$optarg"
1052  ;;
1053  *)
1054      echo "ERROR: unknown option $opt"
1055      echo "Try '$0 --help' for more information"
1056      exit 1
1057  ;;
1058  esac
1059done
1060
1061# test for any invalid configuration combinations
1062if test "$plugins" = "yes" -a "$tcg" = "disabled"; then
1063    error_exit "Can't enable plugins on non-TCG builds"
1064fi
1065
1066case $git_submodules_action in
1067    update|validate)
1068        if test ! -e "$source_path/.git"; then
1069            echo "ERROR: cannot $git_submodules_action git submodules without .git"
1070            exit 1
1071        fi
1072    ;;
1073    ignore)
1074        if ! test -f "$source_path/ui/keycodemapdb/README"
1075        then
1076            echo
1077            echo "ERROR: missing GIT submodules"
1078            echo
1079            if test -e "$source_path/.git"; then
1080                echo "--with-git-submodules=ignore specified but submodules were not"
1081                echo "checked out.  Please initialize and update submodules."
1082            else
1083                echo "This is not a GIT checkout but module content appears to"
1084                echo "be missing. Do not use 'git archive' or GitHub download links"
1085                echo "to acquire QEMU source archives. Non-GIT builds are only"
1086                echo "supported with source archives linked from:"
1087                echo
1088                echo "  https://www.qemu.org/download/#source"
1089                echo
1090                echo "Developers working with GIT can use scripts/archive-source.sh"
1091                echo "if they need to create valid source archives."
1092            fi
1093            echo
1094            exit 1
1095        fi
1096    ;;
1097    *)
1098        echo "ERROR: invalid --with-git-submodules= value '$git_submodules_action'"
1099        exit 1
1100    ;;
1101esac
1102
1103libdir="${libdir:-$prefix/lib}"
1104libexecdir="${libexecdir:-$prefix/libexec}"
1105includedir="${includedir:-$prefix/include}"
1106
1107if test "$mingw32" = "yes" ; then
1108    bindir="${bindir:-$prefix}"
1109else
1110    bindir="${bindir:-$prefix/bin}"
1111fi
1112mandir="${mandir:-$prefix/share/man}"
1113datadir="${datadir:-$prefix/share}"
1114docdir="${docdir:-$prefix/share/doc}"
1115sysconfdir="${sysconfdir:-$prefix/etc}"
1116local_statedir="${local_statedir:-$prefix/var}"
1117firmwarepath="${firmwarepath:-$datadir/qemu-firmware}"
1118localedir="${localedir:-$datadir/locale}"
1119
1120if eval test -z "\${cross_cc_$cpu}"; then
1121    eval "cross_cc_${cpu}=\$cc"
1122    cross_cc_vars="$cross_cc_vars cross_cc_${cpu}"
1123fi
1124
1125default_target_list=""
1126mak_wilds=""
1127
1128if [ "$linux_user" != no ]; then
1129    if [ "$targetos" = linux ] && [ -d $source_path/linux-user/include/host/$cpu ]; then
1130        linux_user=yes
1131    elif [ "$linux_user" = yes ]; then
1132        error_exit "linux-user not supported on this architecture"
1133    fi
1134fi
1135if [ "$bsd_user" != no ]; then
1136    if [ "$bsd_user" = "" ]; then
1137        test $targetos = freebsd && bsd_user=yes
1138    fi
1139    if [ "$bsd_user" = yes ] && ! [ -d $source_path/bsd-user/$targetos ]; then
1140        error_exit "bsd-user not supported on this host OS"
1141    fi
1142fi
1143if [ "$softmmu" = "yes" ]; then
1144    mak_wilds="${mak_wilds} $source_path/configs/targets/*-softmmu.mak"
1145fi
1146if [ "$linux_user" = "yes" ]; then
1147    mak_wilds="${mak_wilds} $source_path/configs/targets/*-linux-user.mak"
1148fi
1149if [ "$bsd_user" = "yes" ]; then
1150    mak_wilds="${mak_wilds} $source_path/configs/targets/*-bsd-user.mak"
1151fi
1152
1153for config in $mak_wilds; do
1154    target="$(basename "$config" .mak)"
1155    if echo "$target_list_exclude" | grep -vq "$target"; then
1156        default_target_list="${default_target_list} $target"
1157    fi
1158done
1159
1160if test x"$show_help" = x"yes" ; then
1161cat << EOF
1162
1163Usage: configure [options]
1164Options: [defaults in brackets after descriptions]
1165
1166Standard options:
1167  --help                   print this message
1168  --prefix=PREFIX          install in PREFIX [$prefix]
1169  --interp-prefix=PREFIX   where to find shared libraries, etc.
1170                           use %M for cpu name [$interp_prefix]
1171  --target-list=LIST       set target list (default: build all)
1172$(echo Available targets: $default_target_list | \
1173  fold -s -w 53 | sed -e 's/^/                           /')
1174  --target-list-exclude=LIST exclude a set of targets from the default target-list
1175
1176Advanced options (experts only):
1177  --cross-prefix=PREFIX    use PREFIX for compile tools, PREFIX can be blank [$cross_prefix]
1178  --cc=CC                  use C compiler CC [$cc]
1179  --iasl=IASL              use ACPI compiler IASL [$iasl]
1180  --host-cc=CC             use C compiler CC [$host_cc] for code run at
1181                           build time
1182  --cxx=CXX                use C++ compiler CXX [$cxx]
1183  --objcc=OBJCC            use Objective-C compiler OBJCC [$objcc]
1184  --extra-cflags=CFLAGS    append extra C compiler flags CFLAGS
1185  --extra-cxxflags=CXXFLAGS append extra C++ compiler flags CXXFLAGS
1186  --extra-objcflags=OBJCFLAGS append extra Objective C compiler flags OBJCFLAGS
1187  --extra-ldflags=LDFLAGS  append extra linker flags LDFLAGS
1188  --cross-cc-ARCH=CC       use compiler when building ARCH guest test cases
1189  --cross-cc-cflags-ARCH=  use compiler flags when building ARCH guest tests
1190  --make=MAKE              use specified make [$make]
1191  --python=PYTHON          use specified python [$python]
1192  --sphinx-build=SPHINX    use specified sphinx-build [$sphinx_build]
1193  --meson=MESON            use specified meson [$meson]
1194  --ninja=NINJA            use specified ninja [$ninja]
1195  --smbd=SMBD              use specified smbd [$smbd]
1196  --with-git=GIT           use specified git [$git]
1197  --with-git-submodules=update   update git submodules (default if .git dir exists)
1198  --with-git-submodules=validate fail if git submodules are not up to date
1199  --with-git-submodules=ignore   do not update or check git submodules (default if no .git dir)
1200  --static                 enable static build [$static]
1201  --mandir=PATH            install man pages in PATH
1202  --datadir=PATH           install firmware in PATH/$qemu_suffix
1203  --localedir=PATH         install translation in PATH/$qemu_suffix
1204  --docdir=PATH            install documentation in PATH/$qemu_suffix
1205  --bindir=PATH            install binaries in PATH
1206  --libdir=PATH            install libraries in PATH
1207  --libexecdir=PATH        install helper binaries in PATH
1208  --sysconfdir=PATH        install config in PATH/$qemu_suffix
1209  --localstatedir=PATH     install local state in PATH (set at runtime on win32)
1210  --firmwarepath=PATH      search PATH for firmware files
1211  --efi-aarch64=PATH       PATH of efi file to use for aarch64 VMs.
1212  --with-suffix=SUFFIX     suffix for QEMU data inside datadir/libdir/sysconfdir/docdir [$qemu_suffix]
1213  --with-pkgversion=VERS   use specified string as sub-version of the package
1214  --without-default-features default all --enable-* options to "disabled"
1215  --without-default-devices  do not include any device that is not needed to
1216                           start the emulator (only use if you are including
1217                           desired devices in configs/devices/)
1218  --with-devices-ARCH=NAME override default configs/devices
1219  --enable-debug           enable common debug build options
1220  --enable-sanitizers      enable default sanitizers
1221  --enable-tsan            enable thread sanitizer
1222  --disable-werror         disable compilation abort on warning
1223  --disable-stack-protector disable compiler-provided stack protection
1224  --audio-drv-list=LIST    set audio drivers to try if -audiodev is not used
1225  --block-drv-whitelist=L  Same as --block-drv-rw-whitelist=L
1226  --block-drv-rw-whitelist=L
1227                           set block driver read-write whitelist
1228                           (by default affects only QEMU, not tools like qemu-img)
1229  --block-drv-ro-whitelist=L
1230                           set block driver read-only whitelist
1231                           (by default affects only QEMU, not tools like qemu-img)
1232  --with-trace-file=NAME   Full PATH,NAME of file to store traces
1233                           Default:trace-<pid>
1234  --cpu=CPU                Build for host CPU [$cpu]
1235  --with-coroutine=BACKEND coroutine backend. Supported options:
1236                           ucontext, sigaltstack, windows
1237  --enable-gcov            enable test coverage analysis with gcov
1238  --tls-priority           default TLS protocol/cipher priority string
1239  --enable-plugins
1240                           enable plugins via shared library loading
1241  --disable-containers     don't use containers for cross-building
1242  --gdb=GDB-path           gdb to use for gdbstub tests [$gdb_bin]
1243EOF
1244  meson_options_help
1245cat << EOF
1246  system          all system emulation targets
1247  user            supported user emulation targets
1248  linux-user      all linux usermode emulation targets
1249  bsd-user        all BSD usermode emulation targets
1250  pie             Position Independent Executables
1251  modules         modules support (non-Windows)
1252  module-upgrades try to load modules from alternate paths for upgrades
1253  debug-tcg       TCG debugging (default is disabled)
1254  debug-info      debugging information
1255  lto             Enable Link-Time Optimization.
1256  safe-stack      SafeStack Stack Smash Protection. Depends on
1257                  clang/llvm >= 3.7 and requires coroutine backend ucontext.
1258  rdma            Enable RDMA-based migration
1259  pvrdma          Enable PVRDMA support
1260  vhost-net       vhost-net kernel acceleration support
1261  vhost-vsock     virtio sockets device support
1262  vhost-scsi      vhost-scsi kernel target support
1263  vhost-crypto    vhost-user-crypto backend support
1264  vhost-kernel    vhost kernel backend support
1265  vhost-user      vhost-user backend support
1266  vhost-vdpa      vhost-vdpa kernel backend support
1267  opengl          opengl support
1268  gio             libgio support
1269
1270NOTE: The object files are built at the place where configure is launched
1271EOF
1272exit 0
1273fi
1274
1275# Remove old dependency files to make sure that they get properly regenerated
1276rm -f */config-devices.mak.d
1277
1278if test -z "$python"
1279then
1280    error_exit "Python not found. Use --python=/path/to/python"
1281fi
1282if ! has "$make"
1283then
1284    error_exit "GNU make ($make) not found"
1285fi
1286
1287# Note that if the Python conditional here evaluates True we will exit
1288# with status 1 which is a shell 'false' value.
1289if ! $python -c 'import sys; sys.exit(sys.version_info < (3,6))'; then
1290  error_exit "Cannot use '$python', Python >= 3.6 is required." \
1291      "Use --python=/path/to/python to specify a supported Python."
1292fi
1293
1294# Preserve python version since some functionality is dependent on it
1295python_version=$($python -c 'import sys; print("%d.%d.%d" % (sys.version_info[0], sys.version_info[1], sys.version_info[2]))' 2>/dev/null)
1296
1297# Suppress writing compiled files
1298python="$python -B"
1299
1300if test -z "$meson"; then
1301    if test "$explicit_python" = no && has meson && version_ge "$(meson --version)" 0.59.3; then
1302        meson=meson
1303    elif test $git_submodules_action != 'ignore' ; then
1304        meson=git
1305    elif test -e "${source_path}/meson/meson.py" ; then
1306        meson=internal
1307    else
1308        if test "$explicit_python" = yes; then
1309            error_exit "--python requires using QEMU's embedded Meson distribution, but it was not found."
1310        else
1311            error_exit "Meson not found.  Use --meson=/path/to/meson"
1312        fi
1313    fi
1314else
1315    # Meson uses its own Python interpreter to invoke other Python scripts,
1316    # but the user wants to use the one they specified with --python.
1317    #
1318    # We do not want to override the distro Python interpreter (and sometimes
1319    # cannot: for example in Homebrew /usr/bin/meson is a bash script), so
1320    # just require --meson=git|internal together with --python.
1321    if test "$explicit_python" = yes; then
1322        case "$meson" in
1323            git | internal) ;;
1324            *) error_exit "--python requires using QEMU's embedded Meson distribution." ;;
1325        esac
1326    fi
1327fi
1328
1329if test "$meson" = git; then
1330    git_submodules="${git_submodules} meson"
1331fi
1332
1333case "$meson" in
1334    git | internal)
1335        meson="$python ${source_path}/meson/meson.py"
1336        ;;
1337    *) meson=$(command -v "$meson") ;;
1338esac
1339
1340# Probe for ninja
1341
1342if test -z "$ninja"; then
1343    for c in ninja ninja-build samu; do
1344        if has $c; then
1345            ninja=$(command -v "$c")
1346            break
1347        fi
1348    done
1349    if test -z "$ninja"; then
1350      error_exit "Cannot find Ninja"
1351    fi
1352fi
1353
1354# Check that the C compiler works. Doing this here before testing
1355# the host CPU ensures that we had a valid CC to autodetect the
1356# $cpu var (and we should bail right here if that's not the case).
1357# It also allows the help message to be printed without a CC.
1358write_c_skeleton;
1359if compile_object ; then
1360  : C compiler works ok
1361else
1362    error_exit "\"$cc\" either does not exist or does not work"
1363fi
1364if ! compile_prog ; then
1365    error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
1366fi
1367
1368# Consult white-list to determine whether to enable werror
1369# by default.  Only enable by default for git builds
1370if test -z "$werror" ; then
1371    if test "$git_submodules_action" != "ignore" && \
1372        { test "$linux" = "yes" || test "$mingw32" = "yes"; }; then
1373        werror="yes"
1374    else
1375        werror="no"
1376    fi
1377fi
1378
1379if test "$targetos" = "bogus"; then
1380    # Now that we know that we're not printing the help and that
1381    # the compiler works (so the results of the check_defines we used
1382    # to identify the OS are reliable), if we didn't recognize the
1383    # host OS we should stop now.
1384    error_exit "Unrecognized host OS (uname -s reports '$(uname -s)')"
1385fi
1386
1387# Check whether the compiler matches our minimum requirements:
1388cat > $TMPC << EOF
1389#if defined(__clang_major__) && defined(__clang_minor__)
1390# ifdef __apple_build_version__
1391#  if __clang_major__ < 10 || (__clang_major__ == 10 && __clang_minor__ < 0)
1392#   error You need at least XCode Clang v10.0 to compile QEMU
1393#  endif
1394# else
1395#  if __clang_major__ < 6 || (__clang_major__ == 6 && __clang_minor__ < 0)
1396#   error You need at least Clang v6.0 to compile QEMU
1397#  endif
1398# endif
1399#elif defined(__GNUC__) && defined(__GNUC_MINOR__)
1400# if __GNUC__ < 7 || (__GNUC__ == 7 && __GNUC_MINOR__ < 4)
1401#  error You need at least GCC v7.4.0 to compile QEMU
1402# endif
1403#else
1404# error You either need GCC or Clang to compiler QEMU
1405#endif
1406int main (void) { return 0; }
1407EOF
1408if ! compile_prog "" "" ; then
1409    error_exit "You need at least GCC v7.4 or Clang v6.0 (or XCode Clang v10.0)"
1410fi
1411
1412# Accumulate -Wfoo and -Wno-bar separately.
1413# We will list all of the enable flags first, and the disable flags second.
1414# Note that we do not add -Werror, because that would enable it for all
1415# configure tests. If a configure test failed due to -Werror this would
1416# just silently disable some features, so it's too error prone.
1417
1418warn_flags=
1419add_to warn_flags -Wold-style-declaration
1420add_to warn_flags -Wold-style-definition
1421add_to warn_flags -Wtype-limits
1422add_to warn_flags -Wformat-security
1423add_to warn_flags -Wformat-y2k
1424add_to warn_flags -Winit-self
1425add_to warn_flags -Wignored-qualifiers
1426add_to warn_flags -Wempty-body
1427add_to warn_flags -Wnested-externs
1428add_to warn_flags -Wendif-labels
1429add_to warn_flags -Wexpansion-to-defined
1430add_to warn_flags -Wimplicit-fallthrough=2
1431
1432nowarn_flags=
1433add_to nowarn_flags -Wno-initializer-overrides
1434add_to nowarn_flags -Wno-missing-include-dirs
1435add_to nowarn_flags -Wno-shift-negative-value
1436add_to nowarn_flags -Wno-string-plus-int
1437add_to nowarn_flags -Wno-typedef-redefinition
1438add_to nowarn_flags -Wno-tautological-type-limit-compare
1439add_to nowarn_flags -Wno-psabi
1440
1441gcc_flags="$warn_flags $nowarn_flags"
1442
1443cc_has_warning_flag() {
1444    write_c_skeleton;
1445
1446    # Use the positive sense of the flag when testing for -Wno-wombat
1447    # support (gcc will happily accept the -Wno- form of unknown
1448    # warning options).
1449    optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1450    compile_prog "-Werror $optflag" ""
1451}
1452
1453objcc_has_warning_flag() {
1454    cat > $TMPM <<EOF
1455int main(void) { return 0; }
1456EOF
1457
1458    # Use the positive sense of the flag when testing for -Wno-wombat
1459    # support (gcc will happily accept the -Wno- form of unknown
1460    # warning options).
1461    optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1462    do_objc -Werror $optflag \
1463      $OBJCFLAGS $EXTRA_OBJCFLAGS $CONFIGURE_OBJCFLAGS $QEMU_OBJCFLAGS \
1464      -o $TMPE $TMPM $QEMU_LDFLAGS
1465}
1466
1467for flag in $gcc_flags; do
1468    if cc_has_warning_flag $flag ; then
1469        QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1470    fi
1471    if objcc_has_warning_flag $flag ; then
1472        QEMU_OBJCFLAGS="$QEMU_OBJCFLAGS $flag"
1473    fi
1474done
1475
1476if test "$stack_protector" != "no"; then
1477  cat > $TMPC << EOF
1478int main(int argc, char *argv[])
1479{
1480    char arr[64], *p = arr, *c = argv[0];
1481    while (*c) {
1482        *p++ = *c++;
1483    }
1484    return 0;
1485}
1486EOF
1487  gcc_flags="-fstack-protector-strong -fstack-protector-all"
1488  sp_on=0
1489  for flag in $gcc_flags; do
1490    # We need to check both a compile and a link, since some compiler
1491    # setups fail only on a .c->.o compile and some only at link time
1492    if compile_object "-Werror $flag" &&
1493       compile_prog "-Werror $flag" ""; then
1494      QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1495      QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
1496      sp_on=1
1497      break
1498    fi
1499  done
1500  if test "$stack_protector" = yes; then
1501    if test $sp_on = 0; then
1502      error_exit "Stack protector not supported"
1503    fi
1504  fi
1505fi
1506
1507# Disable -Wmissing-braces on older compilers that warn even for
1508# the "universal" C zero initializer {0}.
1509cat > $TMPC << EOF
1510struct {
1511  int a[2];
1512} x = {0};
1513EOF
1514if compile_object "-Werror" "" ; then
1515  :
1516else
1517  QEMU_CFLAGS="$QEMU_CFLAGS -Wno-missing-braces"
1518fi
1519
1520# Our module code doesn't support Windows
1521if test "$modules" = "yes" && test "$mingw32" = "yes" ; then
1522  error_exit "Modules are not available for Windows"
1523fi
1524
1525# module_upgrades is only reasonable if modules are enabled
1526if test "$modules" = "no" && test "$module_upgrades" = "yes" ; then
1527  error_exit "Can't enable module-upgrades as Modules are not enabled"
1528fi
1529
1530# Static linking is not possible with plugins, modules or PIE
1531if test "$static" = "yes" ; then
1532  if test "$modules" = "yes" ; then
1533    error_exit "static and modules are mutually incompatible"
1534  fi
1535  if test "$plugins" = "yes"; then
1536    error_exit "static and plugins are mutually incompatible"
1537  else
1538    plugins="no"
1539  fi
1540fi
1541test "$plugins" = "" && plugins=yes
1542
1543cat > $TMPC << EOF
1544
1545#ifdef __linux__
1546#  define THREAD __thread
1547#else
1548#  define THREAD
1549#endif
1550static THREAD int tls_var;
1551int main(void) { return tls_var; }
1552EOF
1553
1554# Check we support -fno-pie and -no-pie first; we will need the former for
1555# building ROMs, and both for everything if --disable-pie is passed.
1556if compile_prog "-Werror -fno-pie" "-no-pie"; then
1557  CFLAGS_NOPIE="-fno-pie"
1558  LDFLAGS_NOPIE="-no-pie"
1559fi
1560
1561if test "$static" = "yes"; then
1562  if test "$pie" != "no" && compile_prog "-Werror -fPIE -DPIE" "-static-pie"; then
1563    CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
1564    QEMU_LDFLAGS="-static-pie $QEMU_LDFLAGS"
1565    pie="yes"
1566  elif test "$pie" = "yes"; then
1567    error_exit "-static-pie not available due to missing toolchain support"
1568  else
1569    QEMU_LDFLAGS="-static $QEMU_LDFLAGS"
1570    pie="no"
1571  fi
1572elif test "$pie" = "no"; then
1573  CONFIGURE_CFLAGS="$CFLAGS_NOPIE $CONFIGURE_CFLAGS"
1574  CONFIGURE_LDFLAGS="$LDFLAGS_NOPIE $CONFIGURE_LDFLAGS"
1575elif compile_prog "-Werror -fPIE -DPIE" "-pie"; then
1576  CONFIGURE_CFLAGS="-fPIE -DPIE $CONFIGURE_CFLAGS"
1577  CONFIGURE_LDFLAGS="-pie $CONFIGURE_LDFLAGS"
1578  pie="yes"
1579elif test "$pie" = "yes"; then
1580  error_exit "PIE not available due to missing toolchain support"
1581else
1582  echo "Disabling PIE due to missing toolchain support"
1583  pie="no"
1584fi
1585
1586# Detect support for PT_GNU_RELRO + DT_BIND_NOW.
1587# The combination is known as "full relro", because .got.plt is read-only too.
1588if compile_prog "" "-Wl,-z,relro -Wl,-z,now" ; then
1589  QEMU_LDFLAGS="-Wl,-z,relro -Wl,-z,now $QEMU_LDFLAGS"
1590fi
1591
1592##########################################
1593# __sync_fetch_and_and requires at least -march=i486. Many toolchains
1594# use i686 as default anyway, but for those that don't, an explicit
1595# specification is necessary
1596
1597if test "$cpu" = "i386"; then
1598  cat > $TMPC << EOF
1599static int sfaa(int *ptr)
1600{
1601  return __sync_fetch_and_and(ptr, 0);
1602}
1603
1604int main(void)
1605{
1606  int val = 42;
1607  val = __sync_val_compare_and_swap(&val, 0, 1);
1608  sfaa(&val);
1609  return val;
1610}
1611EOF
1612  if ! compile_prog "" "" ; then
1613    QEMU_CFLAGS="-march=i486 $QEMU_CFLAGS"
1614  fi
1615fi
1616
1617if test "$tcg" = "enabled"; then
1618    git_submodules="$git_submodules tests/fp/berkeley-testfloat-3"
1619    git_submodules="$git_submodules tests/fp/berkeley-softfloat-3"
1620fi
1621
1622if test -z "${target_list+xxx}" ; then
1623    default_targets=yes
1624    for target in $default_target_list; do
1625        target_list="$target_list $target"
1626    done
1627    target_list="${target_list# }"
1628else
1629    default_targets=no
1630    target_list=$(echo "$target_list" | sed -e 's/,/ /g')
1631    for target in $target_list; do
1632        # Check that we recognised the target name; this allows a more
1633        # friendly error message than if we let it fall through.
1634        case " $default_target_list " in
1635            *" $target "*)
1636                ;;
1637            *)
1638                error_exit "Unknown target name '$target'"
1639                ;;
1640        esac
1641    done
1642fi
1643
1644# see if system emulation was really requested
1645case " $target_list " in
1646  *"-softmmu "*) softmmu=yes
1647  ;;
1648  *) softmmu=no
1649  ;;
1650esac
1651
1652feature_not_found() {
1653  feature=$1
1654  remedy=$2
1655
1656  error_exit "User requested feature $feature" \
1657      "configure was not able to find it." \
1658      "$remedy"
1659}
1660
1661# ---
1662# big/little endian test
1663cat > $TMPC << EOF
1664#include <stdio.h>
1665short big_endian[] = { 0x4269, 0x4765, 0x4e64, 0x4961, 0x4e00, 0, };
1666short little_endian[] = { 0x694c, 0x7454, 0x654c, 0x6e45, 0x6944, 0x6e41, 0, };
1667int main(int argc, char *argv[])
1668{
1669    return printf("%s %s\n", (char *)big_endian, (char *)little_endian);
1670}
1671EOF
1672
1673if compile_prog ; then
1674    if strings -a $TMPE | grep -q BiGeNdIaN ; then
1675        bigendian="yes"
1676    elif strings -a $TMPE | grep -q LiTtLeEnDiAn ; then
1677        bigendian="no"
1678    else
1679        echo big/little test failed
1680        exit 1
1681    fi
1682else
1683    echo big/little test failed
1684    exit 1
1685fi
1686
1687#########################################
1688# vhost interdependencies and host support
1689
1690# vhost backends
1691if test "$vhost_user" = "yes" && test "$mingw32" = "yes"; then
1692  error_exit "vhost-user is not available on Windows"
1693fi
1694test "$vhost_vdpa" = "" && vhost_vdpa=$linux
1695if test "$vhost_vdpa" = "yes" && test "$linux" != "yes"; then
1696  error_exit "vhost-vdpa is only available on Linux"
1697fi
1698test "$vhost_kernel" = "" && vhost_kernel=$linux
1699if test "$vhost_kernel" = "yes" && test "$linux" != "yes"; then
1700  error_exit "vhost-kernel is only available on Linux"
1701fi
1702
1703# vhost-kernel devices
1704test "$vhost_scsi" = "" && vhost_scsi=$vhost_kernel
1705if test "$vhost_scsi" = "yes" && test "$vhost_kernel" != "yes"; then
1706  error_exit "--enable-vhost-scsi requires --enable-vhost-kernel"
1707fi
1708test "$vhost_vsock" = "" && vhost_vsock=$vhost_kernel
1709if test "$vhost_vsock" = "yes" && test "$vhost_kernel" != "yes"; then
1710  error_exit "--enable-vhost-vsock requires --enable-vhost-kernel"
1711fi
1712
1713# vhost-user backends
1714test "$vhost_net_user" = "" && vhost_net_user=$vhost_user
1715if test "$vhost_net_user" = "yes" && test "$vhost_user" = "no"; then
1716  error_exit "--enable-vhost-net-user requires --enable-vhost-user"
1717fi
1718test "$vhost_crypto" = "" && vhost_crypto=$vhost_user
1719if test "$vhost_crypto" = "yes" && test "$vhost_user" = "no"; then
1720  error_exit "--enable-vhost-crypto requires --enable-vhost-user"
1721fi
1722test "$vhost_user_fs" = "" && vhost_user_fs=$vhost_user
1723if test "$vhost_user_fs" = "yes" && test "$vhost_user" = "no"; then
1724  error_exit "--enable-vhost-user-fs requires --enable-vhost-user"
1725fi
1726#vhost-vdpa backends
1727test "$vhost_net_vdpa" = "" && vhost_net_vdpa=$vhost_vdpa
1728if test "$vhost_net_vdpa" = "yes" && test "$vhost_vdpa" = "no"; then
1729  error_exit "--enable-vhost-net-vdpa requires --enable-vhost-vdpa"
1730fi
1731
1732# OR the vhost-kernel, vhost-vdpa and vhost-user values for simplicity
1733if test "$vhost_net" = ""; then
1734  test "$vhost_net_user" = "yes" && vhost_net=yes
1735  test "$vhost_net_vdpa" = "yes" && vhost_net=yes
1736  test "$vhost_kernel" = "yes" && vhost_net=yes
1737fi
1738
1739##########################################
1740# pkg-config probe
1741
1742if ! has "$pkg_config_exe"; then
1743  error_exit "pkg-config binary '$pkg_config_exe' not found"
1744fi
1745
1746##########################################
1747# xen probe
1748
1749if test "$xen" != "disabled" ; then
1750  # Check whether Xen library path is specified via --extra-ldflags to avoid
1751  # overriding this setting with pkg-config output. If not, try pkg-config
1752  # to obtain all needed flags.
1753
1754  if ! echo $EXTRA_LDFLAGS | grep tools/libxc > /dev/null && \
1755     $pkg_config --exists xencontrol ; then
1756    xen_ctrl_version="$(printf '%d%02d%02d' \
1757      $($pkg_config --modversion xencontrol | sed 's/\./ /g') )"
1758    xen=enabled
1759    xen_pc="xencontrol xenstore xenforeignmemory xengnttab"
1760    xen_pc="$xen_pc xenevtchn xendevicemodel"
1761    if $pkg_config --exists xentoolcore; then
1762      xen_pc="$xen_pc xentoolcore"
1763    fi
1764    xen_cflags="$($pkg_config --cflags $xen_pc)"
1765    xen_libs="$($pkg_config --libs $xen_pc)"
1766  else
1767
1768    xen_libs="-lxenstore -lxenctrl"
1769    xen_stable_libs="-lxenforeignmemory -lxengnttab -lxenevtchn"
1770
1771    # First we test whether Xen headers and libraries are available.
1772    # If no, we are done and there is no Xen support.
1773    # If yes, more tests are run to detect the Xen version.
1774
1775    # Xen (any)
1776    cat > $TMPC <<EOF
1777#include <xenctrl.h>
1778int main(void) {
1779  return 0;
1780}
1781EOF
1782    if ! compile_prog "" "$xen_libs" ; then
1783      # Xen not found
1784      if test "$xen" = "enabled" ; then
1785        feature_not_found "xen" "Install xen devel"
1786      fi
1787      xen=disabled
1788
1789    # Xen unstable
1790    elif
1791        cat > $TMPC <<EOF &&
1792#undef XC_WANT_COMPAT_DEVICEMODEL_API
1793#define __XEN_TOOLS__
1794#include <xendevicemodel.h>
1795#include <xenforeignmemory.h>
1796int main(void) {
1797  xendevicemodel_handle *xd;
1798  xenforeignmemory_handle *xfmem;
1799
1800  xd = xendevicemodel_open(0, 0);
1801  xendevicemodel_pin_memory_cacheattr(xd, 0, 0, 0, 0);
1802
1803  xfmem = xenforeignmemory_open(0, 0);
1804  xenforeignmemory_map_resource(xfmem, 0, 0, 0, 0, 0, NULL, 0, 0);
1805
1806  return 0;
1807}
1808EOF
1809        compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs -lxentoolcore"
1810      then
1811      xen_stable_libs="-lxendevicemodel $xen_stable_libs -lxentoolcore"
1812      xen_ctrl_version=41100
1813      xen=enabled
1814    elif
1815        cat > $TMPC <<EOF &&
1816#undef XC_WANT_COMPAT_MAP_FOREIGN_API
1817#include <xenforeignmemory.h>
1818#include <xentoolcore.h>
1819int main(void) {
1820  xenforeignmemory_handle *xfmem;
1821
1822  xfmem = xenforeignmemory_open(0, 0);
1823  xenforeignmemory_map2(xfmem, 0, 0, 0, 0, 0, 0, 0);
1824  xentoolcore_restrict_all(0);
1825
1826  return 0;
1827}
1828EOF
1829        compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs -lxentoolcore"
1830      then
1831      xen_stable_libs="-lxendevicemodel $xen_stable_libs -lxentoolcore"
1832      xen_ctrl_version=41000
1833      xen=enabled
1834    elif
1835        cat > $TMPC <<EOF &&
1836#undef XC_WANT_COMPAT_DEVICEMODEL_API
1837#define __XEN_TOOLS__
1838#include <xendevicemodel.h>
1839int main(void) {
1840  xendevicemodel_handle *xd;
1841
1842  xd = xendevicemodel_open(0, 0);
1843  xendevicemodel_close(xd);
1844
1845  return 0;
1846}
1847EOF
1848        compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs"
1849      then
1850      xen_stable_libs="-lxendevicemodel $xen_stable_libs"
1851      xen_ctrl_version=40900
1852      xen=enabled
1853    elif
1854        cat > $TMPC <<EOF &&
1855/*
1856 * If we have stable libs the we don't want the libxc compat
1857 * layers, regardless of what CFLAGS we may have been given.
1858 *
1859 * Also, check if xengnttab_grant_copy_segment_t is defined and
1860 * grant copy operation is implemented.
1861 */
1862#undef XC_WANT_COMPAT_EVTCHN_API
1863#undef XC_WANT_COMPAT_GNTTAB_API
1864#undef XC_WANT_COMPAT_MAP_FOREIGN_API
1865#include <xenctrl.h>
1866#include <xenstore.h>
1867#include <xenevtchn.h>
1868#include <xengnttab.h>
1869#include <xenforeignmemory.h>
1870#include <stdint.h>
1871#include <xen/hvm/hvm_info_table.h>
1872#if !defined(HVM_MAX_VCPUS)
1873# error HVM_MAX_VCPUS not defined
1874#endif
1875int main(void) {
1876  xc_interface *xc = NULL;
1877  xenforeignmemory_handle *xfmem;
1878  xenevtchn_handle *xe;
1879  xengnttab_handle *xg;
1880  xengnttab_grant_copy_segment_t* seg = NULL;
1881
1882  xs_daemon_open();
1883
1884  xc = xc_interface_open(0, 0, 0);
1885  xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
1886  xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
1887  xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
1888  xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
1889
1890  xfmem = xenforeignmemory_open(0, 0);
1891  xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);
1892
1893  xe = xenevtchn_open(0, 0);
1894  xenevtchn_fd(xe);
1895
1896  xg = xengnttab_open(0, 0);
1897  xengnttab_grant_copy(xg, 0, seg);
1898
1899  return 0;
1900}
1901EOF
1902        compile_prog "" "$xen_libs $xen_stable_libs"
1903      then
1904      xen_ctrl_version=40800
1905      xen=enabled
1906    elif
1907        cat > $TMPC <<EOF &&
1908/*
1909 * If we have stable libs the we don't want the libxc compat
1910 * layers, regardless of what CFLAGS we may have been given.
1911 */
1912#undef XC_WANT_COMPAT_EVTCHN_API
1913#undef XC_WANT_COMPAT_GNTTAB_API
1914#undef XC_WANT_COMPAT_MAP_FOREIGN_API
1915#include <xenctrl.h>
1916#include <xenstore.h>
1917#include <xenevtchn.h>
1918#include <xengnttab.h>
1919#include <xenforeignmemory.h>
1920#include <stdint.h>
1921#include <xen/hvm/hvm_info_table.h>
1922#if !defined(HVM_MAX_VCPUS)
1923# error HVM_MAX_VCPUS not defined
1924#endif
1925int main(void) {
1926  xc_interface *xc = NULL;
1927  xenforeignmemory_handle *xfmem;
1928  xenevtchn_handle *xe;
1929  xengnttab_handle *xg;
1930
1931  xs_daemon_open();
1932
1933  xc = xc_interface_open(0, 0, 0);
1934  xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
1935  xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
1936  xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
1937  xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
1938
1939  xfmem = xenforeignmemory_open(0, 0);
1940  xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);
1941
1942  xe = xenevtchn_open(0, 0);
1943  xenevtchn_fd(xe);
1944
1945  xg = xengnttab_open(0, 0);
1946  xengnttab_map_grant_ref(xg, 0, 0, 0);
1947
1948  return 0;
1949}
1950EOF
1951        compile_prog "" "$xen_libs $xen_stable_libs"
1952      then
1953      xen_ctrl_version=40701
1954      xen=enabled
1955
1956    # Xen 4.6
1957    elif
1958        cat > $TMPC <<EOF &&
1959#include <xenctrl.h>
1960#include <xenstore.h>
1961#include <stdint.h>
1962#include <xen/hvm/hvm_info_table.h>
1963#if !defined(HVM_MAX_VCPUS)
1964# error HVM_MAX_VCPUS not defined
1965#endif
1966int main(void) {
1967  xc_interface *xc;
1968  xs_daemon_open();
1969  xc = xc_interface_open(0, 0, 0);
1970  xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
1971  xc_gnttab_open(NULL, 0);
1972  xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
1973  xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
1974  xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
1975  xc_reserved_device_memory_map(xc, 0, 0, 0, 0, NULL, 0);
1976  return 0;
1977}
1978EOF
1979        compile_prog "" "$xen_libs"
1980      then
1981      xen_ctrl_version=40600
1982      xen=enabled
1983
1984    # Xen 4.5
1985    elif
1986        cat > $TMPC <<EOF &&
1987#include <xenctrl.h>
1988#include <xenstore.h>
1989#include <stdint.h>
1990#include <xen/hvm/hvm_info_table.h>
1991#if !defined(HVM_MAX_VCPUS)
1992# error HVM_MAX_VCPUS not defined
1993#endif
1994int main(void) {
1995  xc_interface *xc;
1996  xs_daemon_open();
1997  xc = xc_interface_open(0, 0, 0);
1998  xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
1999  xc_gnttab_open(NULL, 0);
2000  xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2001  xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2002  xc_hvm_create_ioreq_server(xc, 0, 0, NULL);
2003  return 0;
2004}
2005EOF
2006        compile_prog "" "$xen_libs"
2007      then
2008      xen_ctrl_version=40500
2009      xen=enabled
2010
2011    elif
2012        cat > $TMPC <<EOF &&
2013#include <xenctrl.h>
2014#include <xenstore.h>
2015#include <stdint.h>
2016#include <xen/hvm/hvm_info_table.h>
2017#if !defined(HVM_MAX_VCPUS)
2018# error HVM_MAX_VCPUS not defined
2019#endif
2020int main(void) {
2021  xc_interface *xc;
2022  xs_daemon_open();
2023  xc = xc_interface_open(0, 0, 0);
2024  xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2025  xc_gnttab_open(NULL, 0);
2026  xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2027  xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2028  return 0;
2029}
2030EOF
2031        compile_prog "" "$xen_libs"
2032      then
2033      xen_ctrl_version=40200
2034      xen=enabled
2035
2036    else
2037      if test "$xen" = "enabled" ; then
2038        feature_not_found "xen (unsupported version)" \
2039                          "Install a supported xen (xen 4.2 or newer)"
2040      fi
2041      xen=disabled
2042    fi
2043
2044    if test "$xen" = enabled; then
2045      if test $xen_ctrl_version -ge 40701  ; then
2046        xen_libs="$xen_libs $xen_stable_libs "
2047      fi
2048    fi
2049  fi
2050fi
2051
2052##########################################
2053# RDMA needs OpenFabrics libraries
2054if test "$rdma" != "no" ; then
2055  cat > $TMPC <<EOF
2056#include <rdma/rdma_cma.h>
2057int main(void) { return 0; }
2058EOF
2059  rdma_libs="-lrdmacm -libverbs -libumad"
2060  if compile_prog "" "$rdma_libs" ; then
2061    rdma="yes"
2062  else
2063    if test "$rdma" = "yes" ; then
2064        error_exit \
2065            " OpenFabrics librdmacm/libibverbs/libibumad not present." \
2066            " Your options:" \
2067            "  (1) Fast: Install infiniband packages (devel) from your distro." \
2068            "  (2) Cleanest: Install libraries from www.openfabrics.org" \
2069            "  (3) Also: Install softiwarp if you don't have RDMA hardware"
2070    fi
2071    rdma="no"
2072  fi
2073fi
2074
2075##########################################
2076# PVRDMA detection
2077
2078cat > $TMPC <<EOF &&
2079#include <sys/mman.h>
2080
2081int
2082main(void)
2083{
2084    char buf = 0;
2085    void *addr = &buf;
2086    addr = mremap(addr, 0, 1, MREMAP_MAYMOVE | MREMAP_FIXED);
2087
2088    return 0;
2089}
2090EOF
2091
2092if test "$rdma" = "yes" ; then
2093    case "$pvrdma" in
2094    "")
2095        if compile_prog "" ""; then
2096            pvrdma="yes"
2097        else
2098            pvrdma="no"
2099        fi
2100        ;;
2101    "yes")
2102        if ! compile_prog "" ""; then
2103            error_exit "PVRDMA is not supported since mremap is not implemented"
2104        fi
2105        pvrdma="yes"
2106        ;;
2107    "no")
2108        pvrdma="no"
2109        ;;
2110    esac
2111else
2112    if test "$pvrdma" = "yes" ; then
2113        error_exit "PVRDMA requires rdma suppport"
2114    fi
2115    pvrdma="no"
2116fi
2117
2118# Let's see if enhanced reg_mr is supported
2119if test "$pvrdma" = "yes" ; then
2120
2121cat > $TMPC <<EOF &&
2122#include <infiniband/verbs.h>
2123
2124int
2125main(void)
2126{
2127    struct ibv_mr *mr;
2128    struct ibv_pd *pd = NULL;
2129    size_t length = 10;
2130    uint64_t iova = 0;
2131    int access = 0;
2132    void *addr = NULL;
2133
2134    mr = ibv_reg_mr_iova(pd, addr, length, iova, access);
2135
2136    ibv_dereg_mr(mr);
2137
2138    return 0;
2139}
2140EOF
2141    if ! compile_prog "" "-libverbs"; then
2142        QEMU_CFLAGS="$QEMU_CFLAGS -DLEGACY_RDMA_REG_MR"
2143    fi
2144fi
2145
2146##########################################
2147# glib support probe
2148
2149glib_req_ver=2.56
2150glib_modules=gthread-2.0
2151if test "$modules" = yes; then
2152    glib_modules="$glib_modules gmodule-export-2.0"
2153elif test "$plugins" = "yes"; then
2154    glib_modules="$glib_modules gmodule-no-export-2.0"
2155fi
2156
2157for i in $glib_modules; do
2158    if $pkg_config --atleast-version=$glib_req_ver $i; then
2159        glib_cflags=$($pkg_config --cflags $i)
2160        glib_libs=$($pkg_config --libs $i)
2161    else
2162        error_exit "glib-$glib_req_ver $i is required to compile QEMU"
2163    fi
2164done
2165
2166# This workaround is required due to a bug in pkg-config file for glib as it
2167# doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
2168
2169if test "$static" = yes && test "$mingw32" = yes; then
2170    glib_cflags="-DGLIB_STATIC_COMPILATION $glib_cflags"
2171fi
2172
2173if ! test "$gio" = "no"; then
2174    pass=no
2175    if $pkg_config --atleast-version=$glib_req_ver gio-2.0; then
2176        gio_cflags=$($pkg_config --cflags gio-2.0)
2177        gio_libs=$($pkg_config --libs gio-2.0)
2178        gdbus_codegen=$($pkg_config --variable=gdbus_codegen gio-2.0)
2179        if ! has "$gdbus_codegen"; then
2180            gdbus_codegen=
2181        fi
2182        # Check that the libraries actually work -- Ubuntu 18.04 ships
2183        # with pkg-config --static --libs data for gio-2.0 that is missing
2184        # -lblkid and will give a link error.
2185        cat > $TMPC <<EOF
2186#include <gio/gio.h>
2187int main(void)
2188{
2189    g_dbus_proxy_new_sync(0, 0, 0, 0, 0, 0, 0, 0);
2190    return 0;
2191}
2192EOF
2193        if compile_prog "$gio_cflags" "$gio_libs" ; then
2194            pass=yes
2195        else
2196            pass=no
2197        fi
2198
2199        if test "$pass" = "yes" &&
2200            $pkg_config --atleast-version=$glib_req_ver gio-unix-2.0; then
2201            gio_cflags="$gio_cflags $($pkg_config --cflags gio-unix-2.0)"
2202            gio_libs="$gio_libs $($pkg_config --libs gio-unix-2.0)"
2203        fi
2204    fi
2205
2206    if test "$pass" = "no"; then
2207        if test "$gio" = "yes"; then
2208            feature_not_found "gio" "Install libgio >= 2.0"
2209        else
2210            gio=no
2211        fi
2212    else
2213        gio=yes
2214    fi
2215fi
2216
2217# Sanity check that the current size_t matches the
2218# size that glib thinks it should be. This catches
2219# problems on multi-arch where people try to build
2220# 32-bit QEMU while pointing at 64-bit glib headers
2221cat > $TMPC <<EOF
2222#include <glib.h>
2223#include <unistd.h>
2224
2225#define QEMU_BUILD_BUG_ON(x) \
2226  typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
2227
2228int main(void) {
2229   QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
2230   return 0;
2231}
2232EOF
2233
2234if ! compile_prog "$glib_cflags" "$glib_libs" ; then
2235    error_exit "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T."\
2236               "You probably need to set PKG_CONFIG_LIBDIR"\
2237	       "to point to the right pkg-config files for your"\
2238	       "build target"
2239fi
2240
2241# Silence clang warnings triggered by glib < 2.57.2
2242cat > $TMPC << EOF
2243#include <glib.h>
2244typedef struct Foo {
2245    int i;
2246} Foo;
2247static void foo_free(Foo *f)
2248{
2249    g_free(f);
2250}
2251G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free)
2252int main(void) { return 0; }
2253EOF
2254if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
2255    if cc_has_warning_flag "-Wno-unused-function"; then
2256        glib_cflags="$glib_cflags -Wno-unused-function"
2257        CONFIGURE_CFLAGS="$CONFIGURE_CFLAGS -Wno-unused-function"
2258    fi
2259fi
2260
2261##########################################
2262# SHA command probe for modules
2263if test "$modules" = yes; then
2264    shacmd_probe="sha1sum sha1 shasum"
2265    for c in $shacmd_probe; do
2266        if has $c; then
2267            shacmd="$c"
2268            break
2269        fi
2270    done
2271    if test "$shacmd" = ""; then
2272        error_exit "one of the checksum commands is required to enable modules: $shacmd_probe"
2273    fi
2274fi
2275
2276##########################################
2277# fdt probe
2278
2279case "$fdt" in
2280  auto | enabled | internal)
2281    # Simpler to always update submodule, even if not needed.
2282    git_submodules="${git_submodules} dtc"
2283    ;;
2284esac
2285
2286##########################################
2287# opengl probe (for sdl2, gtk)
2288
2289if test "$opengl" != "no" ; then
2290  epoxy=no
2291  if $pkg_config epoxy; then
2292    cat > $TMPC << EOF
2293#include <epoxy/egl.h>
2294int main(void) { return 0; }
2295EOF
2296    if compile_prog "" "" ; then
2297      epoxy=yes
2298    fi
2299  fi
2300
2301  if test "$epoxy" = "yes" ; then
2302    opengl_cflags="$($pkg_config --cflags epoxy)"
2303    opengl_libs="$($pkg_config --libs epoxy)"
2304    opengl=yes
2305  else
2306    if test "$opengl" = "yes" ; then
2307      feature_not_found "opengl" "Please install epoxy with EGL"
2308    fi
2309    opengl_cflags=""
2310    opengl_libs=""
2311    opengl=no
2312  fi
2313fi
2314
2315# check for usbfs
2316have_usbfs=no
2317if test "$linux_user" = "yes"; then
2318  cat > $TMPC << EOF
2319#include <linux/usbdevice_fs.h>
2320
2321#ifndef USBDEVFS_GET_CAPABILITIES
2322#error "USBDEVFS_GET_CAPABILITIES undefined"
2323#endif
2324
2325#ifndef USBDEVFS_DISCONNECT_CLAIM
2326#error "USBDEVFS_DISCONNECT_CLAIM undefined"
2327#endif
2328
2329int main(void)
2330{
2331    return 0;
2332}
2333EOF
2334  if compile_prog "" ""; then
2335    have_usbfs=yes
2336  fi
2337fi
2338
2339##########################################
2340# capstone
2341
2342case "$capstone" in
2343  auto | enabled | internal)
2344    # Simpler to always update submodule, even if not needed.
2345    git_submodules="${git_submodules} capstone"
2346    ;;
2347esac
2348
2349##########################################
2350# check and set a backend for coroutine
2351
2352# We prefer ucontext, but it's not always possible. The fallback
2353# is sigcontext. On Windows the only valid backend is the Windows
2354# specific one.
2355
2356ucontext_works=no
2357if test "$darwin" != "yes"; then
2358  cat > $TMPC << EOF
2359#include <ucontext.h>
2360#ifdef __stub_makecontext
2361#error Ignoring glibc stub makecontext which will always fail
2362#endif
2363int main(void) { makecontext(0, 0, 0); return 0; }
2364EOF
2365  if compile_prog "" "" ; then
2366    ucontext_works=yes
2367  fi
2368fi
2369
2370if test "$coroutine" = ""; then
2371  if test "$mingw32" = "yes"; then
2372    coroutine=win32
2373  elif test "$ucontext_works" = "yes"; then
2374    coroutine=ucontext
2375  else
2376    coroutine=sigaltstack
2377  fi
2378else
2379  case $coroutine in
2380  windows)
2381    if test "$mingw32" != "yes"; then
2382      error_exit "'windows' coroutine backend only valid for Windows"
2383    fi
2384    # Unfortunately the user visible backend name doesn't match the
2385    # coroutine-*.c filename for this case, so we have to adjust it here.
2386    coroutine=win32
2387    ;;
2388  ucontext)
2389    if test "$ucontext_works" != "yes"; then
2390      feature_not_found "ucontext"
2391    fi
2392    ;;
2393  sigaltstack)
2394    if test "$mingw32" = "yes"; then
2395      error_exit "only the 'windows' coroutine backend is valid for Windows"
2396    fi
2397    ;;
2398  *)
2399    error_exit "unknown coroutine backend $coroutine"
2400    ;;
2401  esac
2402fi
2403
2404##################################################
2405# SafeStack
2406
2407
2408if test "$safe_stack" = "yes"; then
2409cat > $TMPC << EOF
2410int main(int argc, char *argv[])
2411{
2412#if ! __has_feature(safe_stack)
2413#error SafeStack Disabled
2414#endif
2415    return 0;
2416}
2417EOF
2418  flag="-fsanitize=safe-stack"
2419  # Check that safe-stack is supported and enabled.
2420  if compile_prog "-Werror $flag" "$flag"; then
2421    # Flag needed both at compilation and at linking
2422    QEMU_CFLAGS="$QEMU_CFLAGS $flag"
2423    QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
2424  else
2425    error_exit "SafeStack not supported by your compiler"
2426  fi
2427  if test "$coroutine" != "ucontext"; then
2428    error_exit "SafeStack is only supported by the coroutine backend ucontext"
2429  fi
2430else
2431cat > $TMPC << EOF
2432int main(int argc, char *argv[])
2433{
2434#if defined(__has_feature)
2435#if __has_feature(safe_stack)
2436#error SafeStack Enabled
2437#endif
2438#endif
2439    return 0;
2440}
2441EOF
2442if test "$safe_stack" = "no"; then
2443  # Make sure that safe-stack is disabled
2444  if ! compile_prog "-Werror" ""; then
2445    # SafeStack was already enabled, try to explicitly remove the feature
2446    flag="-fno-sanitize=safe-stack"
2447    if ! compile_prog "-Werror $flag" "$flag"; then
2448      error_exit "Configure cannot disable SafeStack"
2449    fi
2450    QEMU_CFLAGS="$QEMU_CFLAGS $flag"
2451    QEMU_LDFLAGS="$QEMU_LDFLAGS $flag"
2452  fi
2453else # "$safe_stack" = ""
2454  # Set safe_stack to yes or no based on pre-existing flags
2455  if compile_prog "-Werror" ""; then
2456    safe_stack="no"
2457  else
2458    safe_stack="yes"
2459    if test "$coroutine" != "ucontext"; then
2460      error_exit "SafeStack is only supported by the coroutine backend ucontext"
2461    fi
2462  fi
2463fi
2464fi
2465
2466########################################
2467# check if ccache is interfering with
2468# semantic analysis of macros
2469
2470unset CCACHE_CPP2
2471ccache_cpp2=no
2472cat > $TMPC << EOF
2473static const int Z = 1;
2474#define fn() ({ Z; })
2475#define TAUT(X) ((X) == Z)
2476#define PAREN(X, Y) (X == Y)
2477#define ID(X) (X)
2478int main(int argc, char *argv[])
2479{
2480    int x = 0, y = 0;
2481    x = ID(x);
2482    x = fn();
2483    fn();
2484    if (PAREN(x, y)) return 0;
2485    if (TAUT(Z)) return 0;
2486    return 0;
2487}
2488EOF
2489
2490if ! compile_object "-Werror"; then
2491    ccache_cpp2=yes
2492fi
2493
2494#################################################
2495# clang does not support glibc + FORTIFY_SOURCE.
2496
2497if test "$fortify_source" != "no"; then
2498  if echo | $cc -dM -E - | grep __clang__ > /dev/null 2>&1 ; then
2499    fortify_source="no";
2500  elif test -n "$cxx" && has $cxx &&
2501       echo | $cxx -dM -E - | grep __clang__ >/dev/null 2>&1 ; then
2502    fortify_source="no";
2503  else
2504    fortify_source="yes"
2505  fi
2506fi
2507
2508##########################################
2509# checks for sanitizers
2510
2511have_asan=no
2512have_ubsan=no
2513have_asan_iface_h=no
2514have_asan_iface_fiber=no
2515
2516if test "$sanitizers" = "yes" ; then
2517  write_c_skeleton
2518  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" ""; then
2519      have_asan=yes
2520  fi
2521
2522  # we could use a simple skeleton for flags checks, but this also
2523  # detect the static linking issue of ubsan, see also:
2524  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84285
2525  cat > $TMPC << EOF
2526#include <stdlib.h>
2527int main(void) {
2528    void *tmp = malloc(10);
2529    if (tmp != NULL) {
2530        return *(int *)(tmp + 2);
2531    }
2532    return 1;
2533}
2534EOF
2535  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=undefined" ""; then
2536      have_ubsan=yes
2537  fi
2538
2539  if check_include "sanitizer/asan_interface.h" ; then
2540      have_asan_iface_h=yes
2541  fi
2542
2543  cat > $TMPC << EOF
2544#include <sanitizer/asan_interface.h>
2545int main(void) {
2546  __sanitizer_start_switch_fiber(0, 0, 0);
2547  return 0;
2548}
2549EOF
2550  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=address" "" ; then
2551      have_asan_iface_fiber=yes
2552  fi
2553fi
2554
2555# Thread sanitizer is, for now, much noisier than the other sanitizers;
2556# keep it separate until that is not the case.
2557if test "$tsan" = "yes" && test "$sanitizers" = "yes"; then
2558  error_exit "TSAN is not supported with other sanitiziers."
2559fi
2560have_tsan=no
2561have_tsan_iface_fiber=no
2562if test "$tsan" = "yes" ; then
2563  write_c_skeleton
2564  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
2565      have_tsan=yes
2566  fi
2567  cat > $TMPC << EOF
2568#include <sanitizer/tsan_interface.h>
2569int main(void) {
2570  __tsan_create_fiber(0);
2571  return 0;
2572}
2573EOF
2574  if compile_prog "$CPU_CFLAGS -Werror -fsanitize=thread" "" ; then
2575      have_tsan_iface_fiber=yes
2576  fi
2577fi
2578
2579##########################################
2580# check for slirp
2581
2582case "$slirp" in
2583  auto | enabled | internal)
2584    # Simpler to always update submodule, even if not needed.
2585    git_submodules="${git_submodules} slirp"
2586    ;;
2587esac
2588
2589##########################################
2590# check for usable __NR_keyctl syscall
2591
2592if test "$linux" = "yes" ; then
2593
2594    have_keyring=no
2595    cat > $TMPC << EOF
2596#include <errno.h>
2597#include <asm/unistd.h>
2598#include <linux/keyctl.h>
2599#include <unistd.h>
2600int main(void) {
2601    return syscall(__NR_keyctl, KEYCTL_READ, 0, NULL, NULL, 0);
2602}
2603EOF
2604    if compile_prog "" "" ; then
2605        have_keyring=yes
2606    fi
2607fi
2608if test "$secret_keyring" != "no"
2609then
2610    if test "$have_keyring" = "yes"
2611    then
2612	secret_keyring=yes
2613    else
2614	if test "$secret_keyring" = "yes"
2615	then
2616	    error_exit "syscall __NR_keyctl requested, \
2617but not implemented on your system"
2618	else
2619	    secret_keyring=no
2620	fi
2621    fi
2622fi
2623
2624##########################################
2625# End of CC checks
2626# After here, no more $cc or $ld runs
2627
2628write_c_skeleton
2629
2630if test "$gcov" = "yes" ; then
2631  :
2632elif test "$fortify_source" = "yes" ; then
2633  QEMU_CFLAGS="-U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 $QEMU_CFLAGS"
2634  debug=no
2635fi
2636
2637case "$ARCH" in
2638alpha)
2639  # Ensure there's only a single GP
2640  QEMU_CFLAGS="-msmall-data $QEMU_CFLAGS"
2641;;
2642esac
2643
2644if test "$have_asan" = "yes"; then
2645  QEMU_CFLAGS="-fsanitize=address $QEMU_CFLAGS"
2646  QEMU_LDFLAGS="-fsanitize=address $QEMU_LDFLAGS"
2647  if test "$have_asan_iface_h" = "no" ; then
2648      echo "ASAN build enabled, but ASAN header missing." \
2649           "Without code annotation, the report may be inferior."
2650  elif test "$have_asan_iface_fiber" = "no" ; then
2651      echo "ASAN build enabled, but ASAN header is too old." \
2652           "Without code annotation, the report may be inferior."
2653  fi
2654fi
2655if test "$have_tsan" = "yes" ; then
2656  if test "$have_tsan_iface_fiber" = "yes" ; then
2657    QEMU_CFLAGS="-fsanitize=thread $QEMU_CFLAGS"
2658    QEMU_LDFLAGS="-fsanitize=thread $QEMU_LDFLAGS"
2659  else
2660    error_exit "Cannot enable TSAN due to missing fiber annotation interface."
2661  fi
2662elif test "$tsan" = "yes" ; then
2663  error_exit "Cannot enable TSAN due to missing sanitize thread interface."
2664fi
2665if test "$have_ubsan" = "yes"; then
2666  QEMU_CFLAGS="-fsanitize=undefined $QEMU_CFLAGS"
2667  QEMU_LDFLAGS="-fsanitize=undefined $QEMU_LDFLAGS"
2668fi
2669
2670##########################################
2671
2672# Exclude --warn-common with TSan to suppress warnings from the TSan libraries.
2673if test "$solaris" = "no" && test "$tsan" = "no"; then
2674    if $ld --version 2>/dev/null | grep "GNU ld" >/dev/null 2>/dev/null ; then
2675        QEMU_LDFLAGS="-Wl,--warn-common $QEMU_LDFLAGS"
2676    fi
2677fi
2678
2679# Use ASLR, no-SEH and DEP if available
2680if test "$mingw32" = "yes" ; then
2681    flags="--no-seh --nxcompat"
2682
2683    # Disable ASLR for debug builds to allow debugging with gdb
2684    if test "$debug" = "no" ; then
2685        flags="--dynamicbase $flags"
2686    fi
2687
2688    for flag in $flags; do
2689        if ld_has $flag ; then
2690            QEMU_LDFLAGS="-Wl,$flag $QEMU_LDFLAGS"
2691        fi
2692    done
2693fi
2694
2695# Guest agent Windows MSI package
2696
2697if test "$QEMU_GA_MANUFACTURER" = ""; then
2698  QEMU_GA_MANUFACTURER=QEMU
2699fi
2700if test "$QEMU_GA_DISTRO" = ""; then
2701  QEMU_GA_DISTRO=Linux
2702fi
2703if test "$QEMU_GA_VERSION" = ""; then
2704    QEMU_GA_VERSION=$(cat $source_path/VERSION)
2705fi
2706
2707QEMU_GA_MSI_MINGW_DLL_PATH="$($pkg_config --variable=prefix glib-2.0)/bin"
2708
2709# Mac OS X ships with a broken assembler
2710roms=
2711if { test "$cpu" = "i386" || test "$cpu" = "x86_64"; } && \
2712        test "$targetos" != "darwin" && test "$targetos" != "sunos" && \
2713        test "$targetos" != "haiku" && test "$softmmu" = yes ; then
2714    # Different host OS linkers have different ideas about the name of the ELF
2715    # emulation. Linux and OpenBSD/amd64 use 'elf_i386'; FreeBSD uses the _fbsd
2716    # variant; OpenBSD/i386 uses the _obsd variant; and Windows uses i386pe.
2717    for emu in elf_i386 elf_i386_fbsd elf_i386_obsd i386pe; do
2718        if "$ld" -verbose 2>&1 | grep -q "^[[:space:]]*$emu[[:space:]]*$"; then
2719            ld_i386_emulation="$emu"
2720            roms="optionrom"
2721            break
2722        fi
2723    done
2724fi
2725
2726# Only build s390-ccw bios if we're on s390x and the compiler has -march=z900
2727# or -march=z10 (which is the lowest architecture level that Clang supports)
2728if test "$cpu" = "s390x" ; then
2729  write_c_skeleton
2730  compile_prog "-march=z900" ""
2731  has_z900=$?
2732  if [ $has_z900 = 0 ] || compile_object "-march=z10 -msoft-float -Werror"; then
2733    if [ $has_z900 != 0 ]; then
2734      echo "WARNING: Your compiler does not support the z900!"
2735      echo "         The s390-ccw bios will only work with guest CPUs >= z10."
2736    fi
2737    roms="$roms s390-ccw"
2738    # SLOF is required for building the s390-ccw firmware on s390x,
2739    # since it is using the libnet code from SLOF for network booting.
2740    git_submodules="${git_submodules} roms/SLOF"
2741  fi
2742fi
2743
2744# Check that the C++ compiler exists and works with the C compiler.
2745# All the QEMU_CXXFLAGS are based on QEMU_CFLAGS. Keep this at the end to don't miss any other that could be added.
2746if has $cxx; then
2747    cat > $TMPC <<EOF
2748int c_function(void);
2749int main(void) { return c_function(); }
2750EOF
2751
2752    compile_object
2753
2754    cat > $TMPCXX <<EOF
2755extern "C" {
2756   int c_function(void);
2757}
2758int c_function(void) { return 42; }
2759EOF
2760
2761    update_cxxflags
2762
2763    if do_cxx $CXXFLAGS $EXTRA_CXXFLAGS $CONFIGURE_CXXFLAGS $QEMU_CXXFLAGS -o $TMPE $TMPCXX $TMPO $QEMU_LDFLAGS; then
2764        # C++ compiler $cxx works ok with C compiler $cc
2765        :
2766    else
2767        echo "C++ compiler $cxx does not work with C compiler $cc"
2768        echo "Disabling C++ specific optional code"
2769        cxx=
2770    fi
2771else
2772    echo "No C++ compiler available; disabling C++ specific optional code"
2773    cxx=
2774fi
2775
2776if !(GIT="$git" "$source_path/scripts/git-submodule.sh" "$git_submodules_action" "$git_submodules"); then
2777    exit 1
2778fi
2779
2780config_host_mak="config-host.mak"
2781
2782echo "# Automatically generated by configure - do not modify" > $config_host_mak
2783echo >> $config_host_mak
2784
2785echo all: >> $config_host_mak
2786echo "GIT=$git" >> $config_host_mak
2787echo "GIT_SUBMODULES=$git_submodules" >> $config_host_mak
2788echo "GIT_SUBMODULES_ACTION=$git_submodules_action" >> $config_host_mak
2789
2790if test "$debug_tcg" = "yes" ; then
2791  echo "CONFIG_DEBUG_TCG=y" >> $config_host_mak
2792fi
2793if test "$mingw32" = "yes" ; then
2794  echo "CONFIG_WIN32=y" >> $config_host_mak
2795  echo "QEMU_GA_MSI_MINGW_DLL_PATH=${QEMU_GA_MSI_MINGW_DLL_PATH}" >> $config_host_mak
2796  echo "QEMU_GA_MANUFACTURER=${QEMU_GA_MANUFACTURER}" >> $config_host_mak
2797  echo "QEMU_GA_DISTRO=${QEMU_GA_DISTRO}" >> $config_host_mak
2798  echo "QEMU_GA_VERSION=${QEMU_GA_VERSION}" >> $config_host_mak
2799else
2800  echo "CONFIG_POSIX=y" >> $config_host_mak
2801fi
2802
2803if test "$linux" = "yes" ; then
2804  echo "CONFIG_LINUX=y" >> $config_host_mak
2805fi
2806
2807if test "$darwin" = "yes" ; then
2808  echo "CONFIG_DARWIN=y" >> $config_host_mak
2809fi
2810
2811if test "$solaris" = "yes" ; then
2812  echo "CONFIG_SOLARIS=y" >> $config_host_mak
2813fi
2814if test "$static" = "yes" ; then
2815  echo "CONFIG_STATIC=y" >> $config_host_mak
2816fi
2817echo "CONFIG_BDRV_RW_WHITELIST=$block_drv_rw_whitelist" >> $config_host_mak
2818echo "CONFIG_BDRV_RO_WHITELIST=$block_drv_ro_whitelist" >> $config_host_mak
2819qemu_version=$(head $source_path/VERSION)
2820echo "PKGVERSION=$pkgversion" >>$config_host_mak
2821echo "SRC_PATH=$source_path" >> $config_host_mak
2822echo "TARGET_DIRS=$target_list" >> $config_host_mak
2823if test "$modules" = "yes"; then
2824  # $shacmd can generate a hash started with digit, which the compiler doesn't
2825  # like as an symbol. So prefix it with an underscore
2826  echo "CONFIG_STAMP=_$( (echo $qemu_version; echo $pkgversion; cat $0) | $shacmd - | cut -f1 -d\ )" >> $config_host_mak
2827  echo "CONFIG_MODULES=y" >> $config_host_mak
2828fi
2829if test "$module_upgrades" = "yes"; then
2830  echo "CONFIG_MODULE_UPGRADES=y" >> $config_host_mak
2831fi
2832if test "$have_usbfs" = "yes" ; then
2833  echo "CONFIG_USBFS=y" >> $config_host_mak
2834fi
2835if test "$gio" = "yes" ; then
2836    echo "CONFIG_GIO=y" >> $config_host_mak
2837    echo "GIO_CFLAGS=$gio_cflags" >> $config_host_mak
2838    echo "GIO_LIBS=$gio_libs" >> $config_host_mak
2839fi
2840if test "$gdbus_codegen" != "" ; then
2841    echo "GDBUS_CODEGEN=$gdbus_codegen" >> $config_host_mak
2842fi
2843echo "CONFIG_TLS_PRIORITY=\"$tls_priority\"" >> $config_host_mak
2844
2845if test "$xen" = "enabled" ; then
2846  echo "CONFIG_XEN_BACKEND=y" >> $config_host_mak
2847  echo "CONFIG_XEN_CTRL_INTERFACE_VERSION=$xen_ctrl_version" >> $config_host_mak
2848  echo "XEN_CFLAGS=$xen_cflags" >> $config_host_mak
2849  echo "XEN_LIBS=$xen_libs" >> $config_host_mak
2850fi
2851if test "$vhost_scsi" = "yes" ; then
2852  echo "CONFIG_VHOST_SCSI=y" >> $config_host_mak
2853fi
2854if test "$vhost_net" = "yes" ; then
2855  echo "CONFIG_VHOST_NET=y" >> $config_host_mak
2856fi
2857if test "$vhost_net_user" = "yes" ; then
2858  echo "CONFIG_VHOST_NET_USER=y" >> $config_host_mak
2859fi
2860if test "$vhost_net_vdpa" = "yes" ; then
2861  echo "CONFIG_VHOST_NET_VDPA=y" >> $config_host_mak
2862fi
2863if test "$vhost_crypto" = "yes" ; then
2864  echo "CONFIG_VHOST_CRYPTO=y" >> $config_host_mak
2865fi
2866if test "$vhost_vsock" = "yes" ; then
2867  echo "CONFIG_VHOST_VSOCK=y" >> $config_host_mak
2868  if test "$vhost_user" = "yes" ; then
2869    echo "CONFIG_VHOST_USER_VSOCK=y" >> $config_host_mak
2870  fi
2871fi
2872if test "$vhost_kernel" = "yes" ; then
2873  echo "CONFIG_VHOST_KERNEL=y" >> $config_host_mak
2874fi
2875if test "$vhost_user" = "yes" ; then
2876  echo "CONFIG_VHOST_USER=y" >> $config_host_mak
2877fi
2878if test "$vhost_vdpa" = "yes" ; then
2879  echo "CONFIG_VHOST_VDPA=y" >> $config_host_mak
2880fi
2881if test "$vhost_user_fs" = "yes" ; then
2882  echo "CONFIG_VHOST_USER_FS=y" >> $config_host_mak
2883fi
2884if test "$tcg" = "enabled" -a "$tcg_interpreter" = "true" ; then
2885  echo "CONFIG_TCG_INTERPRETER=y" >> $config_host_mak
2886fi
2887
2888if test "$opengl" = "yes" ; then
2889  echo "CONFIG_OPENGL=y" >> $config_host_mak
2890  echo "OPENGL_CFLAGS=$opengl_cflags" >> $config_host_mak
2891  echo "OPENGL_LIBS=$opengl_libs" >> $config_host_mak
2892fi
2893
2894# XXX: suppress that
2895if [ "$bsd" = "yes" ] ; then
2896  echo "CONFIG_BSD=y" >> $config_host_mak
2897fi
2898
2899echo "CONFIG_COROUTINE_BACKEND=$coroutine" >> $config_host_mak
2900
2901if test "$have_asan_iface_fiber" = "yes" ; then
2902    echo "CONFIG_ASAN_IFACE_FIBER=y" >> $config_host_mak
2903fi
2904
2905if test "$have_tsan" = "yes" && test "$have_tsan_iface_fiber" = "yes" ; then
2906    echo "CONFIG_TSAN=y" >> $config_host_mak
2907fi
2908
2909if test "$rdma" = "yes" ; then
2910  echo "CONFIG_RDMA=y" >> $config_host_mak
2911  echo "RDMA_LIBS=$rdma_libs" >> $config_host_mak
2912fi
2913
2914if test "$pvrdma" = "yes" ; then
2915  echo "CONFIG_PVRDMA=y" >> $config_host_mak
2916fi
2917
2918if test "$plugins" = "yes" ; then
2919    echo "CONFIG_PLUGIN=y" >> $config_host_mak
2920fi
2921
2922if test -n "$gdb_bin"; then
2923    gdb_version=$($gdb_bin --version | head -n 1)
2924    if version_ge ${gdb_version##* } 9.1; then
2925        echo "HAVE_GDB_BIN=$gdb_bin" >> $config_host_mak
2926    fi
2927fi
2928
2929if test "$secret_keyring" = "yes" ; then
2930  echo "CONFIG_SECRET_KEYRING=y" >> $config_host_mak
2931fi
2932
2933echo "ROMS=$roms" >> $config_host_mak
2934echo "MAKE=$make" >> $config_host_mak
2935echo "PYTHON=$python" >> $config_host_mak
2936echo "GENISOIMAGE=$genisoimage" >> $config_host_mak
2937echo "MESON=$meson" >> $config_host_mak
2938echo "NINJA=$ninja" >> $config_host_mak
2939echo "CC=$cc" >> $config_host_mak
2940echo "AR=$ar" >> $config_host_mak
2941echo "AS=$as" >> $config_host_mak
2942echo "CCAS=$ccas" >> $config_host_mak
2943echo "CPP=$cpp" >> $config_host_mak
2944echo "OBJCOPY=$objcopy" >> $config_host_mak
2945echo "LD=$ld" >> $config_host_mak
2946echo "CFLAGS_NOPIE=$CFLAGS_NOPIE" >> $config_host_mak
2947echo "QEMU_CFLAGS=$QEMU_CFLAGS" >> $config_host_mak
2948echo "QEMU_CXXFLAGS=$QEMU_CXXFLAGS" >> $config_host_mak
2949echo "QEMU_OBJCFLAGS=$QEMU_OBJCFLAGS" >> $config_host_mak
2950echo "GLIB_CFLAGS=$glib_cflags" >> $config_host_mak
2951echo "GLIB_LIBS=$glib_libs" >> $config_host_mak
2952echo "GLIB_VERSION=$(pkg-config --modversion glib-2.0)" >> $config_host_mak
2953echo "QEMU_LDFLAGS=$QEMU_LDFLAGS" >> $config_host_mak
2954echo "LD_I386_EMULATION=$ld_i386_emulation" >> $config_host_mak
2955echo "STRIP=$strip" >> $config_host_mak
2956echo "EXESUF=$EXESUF" >> $config_host_mak
2957
2958# use included Linux headers
2959if test "$linux" = "yes" ; then
2960  mkdir -p linux-headers
2961  case "$cpu" in
2962  i386|x86_64)
2963    linux_arch=x86
2964    ;;
2965  ppc|ppc64)
2966    linux_arch=powerpc
2967    ;;
2968  s390x)
2969    linux_arch=s390
2970    ;;
2971  aarch64)
2972    linux_arch=arm64
2973    ;;
2974  loongarch*)
2975    linux_arch=loongarch
2976    ;;
2977  mips64)
2978    linux_arch=mips
2979    ;;
2980  *)
2981    # For most CPUs the kernel architecture name and QEMU CPU name match.
2982    linux_arch="$cpu"
2983    ;;
2984  esac
2985    # For non-KVM architectures we will not have asm headers
2986    if [ -e "$source_path/linux-headers/asm-$linux_arch" ]; then
2987      symlink "$source_path/linux-headers/asm-$linux_arch" linux-headers/asm
2988    fi
2989fi
2990
2991for target in $target_list; do
2992    target_dir="$target"
2993    target_name=$(echo $target | cut -d '-' -f 1)$EXESUF
2994    mkdir -p $target_dir
2995    case $target in
2996        *-user) symlink "../qemu-$target_name" "$target_dir/qemu-$target_name" ;;
2997        *) symlink "../qemu-system-$target_name" "$target_dir/qemu-system-$target_name" ;;
2998    esac
2999done
3000
3001echo "CONFIG_QEMU_INTERP_PREFIX=$interp_prefix" | sed 's/%M/@0@/' >> $config_host_mak
3002if test "$default_targets" = "yes"; then
3003  echo "CONFIG_DEFAULT_TARGETS=y" >> $config_host_mak
3004fi
3005
3006if test "$ccache_cpp2" = "yes"; then
3007  echo "export CCACHE_CPP2=y" >> $config_host_mak
3008fi
3009
3010if test "$safe_stack" = "yes"; then
3011  echo "CONFIG_SAFESTACK=y" >> $config_host_mak
3012fi
3013
3014# If we're using a separate build tree, set it up now.
3015# LINKS are things to symlink back into the source tree
3016# (these can be both files and directories).
3017# Caution: do not add files or directories here using wildcards. This
3018# will result in problems later if a new file matching the wildcard is
3019# added to the source tree -- nothing will cause configure to be rerun
3020# so the build tree will be missing the link back to the new file, and
3021# tests might fail. Prefer to keep the relevant files in their own
3022# directory and symlink the directory instead.
3023LINKS="Makefile"
3024LINKS="$LINKS tests/tcg/Makefile.target"
3025LINKS="$LINKS pc-bios/optionrom/Makefile"
3026LINKS="$LINKS pc-bios/s390-ccw/Makefile"
3027LINKS="$LINKS roms/seabios/Makefile"
3028LINKS="$LINKS pc-bios/qemu-icon.bmp"
3029LINKS="$LINKS .gdbinit scripts" # scripts needed by relative path in .gdbinit
3030LINKS="$LINKS tests/avocado tests/data"
3031LINKS="$LINKS tests/qemu-iotests/check"
3032LINKS="$LINKS python"
3033LINKS="$LINKS contrib/plugins/Makefile "
3034for bios_file in \
3035    $source_path/pc-bios/*.bin \
3036    $source_path/pc-bios/*.elf \
3037    $source_path/pc-bios/*.lid \
3038    $source_path/pc-bios/*.rom \
3039    $source_path/pc-bios/*.dtb \
3040    $source_path/pc-bios/*.img \
3041    $source_path/pc-bios/openbios-* \
3042    $source_path/pc-bios/u-boot.* \
3043    $source_path/pc-bios/palcode-* \
3044    $source_path/pc-bios/qemu_vga.ndrv
3045
3046do
3047    LINKS="$LINKS pc-bios/$(basename $bios_file)"
3048done
3049for f in $LINKS ; do
3050    if [ -e "$source_path/$f" ]; then
3051        mkdir -p `dirname ./$f`
3052        symlink "$source_path/$f" "$f"
3053    fi
3054done
3055
3056(for i in $cross_cc_vars; do
3057  export $i
3058done
3059export target_list source_path use_containers cpu host_cc
3060$source_path/tests/tcg/configure.sh)
3061
3062# temporary config to build submodules
3063if test -f $source_path/roms/seabios/Makefile; then
3064  for rom in seabios; do
3065    config_mak=roms/$rom/config.mak
3066    echo "# Automatically generated by configure - do not modify" > $config_mak
3067    echo "SRC_PATH=$source_path/roms/$rom" >> $config_mak
3068    echo "AS=$as" >> $config_mak
3069    echo "CCAS=$ccas" >> $config_mak
3070    echo "CC=$cc" >> $config_mak
3071    echo "BCC=bcc" >> $config_mak
3072    echo "CPP=$cpp" >> $config_mak
3073    echo "OBJCOPY=objcopy" >> $config_mak
3074    echo "IASL=$iasl" >> $config_mak
3075    echo "LD=$ld" >> $config_mak
3076    echo "RANLIB=$ranlib" >> $config_mak
3077  done
3078fi
3079
3080config_mak=pc-bios/optionrom/config.mak
3081echo "# Automatically generated by configure - do not modify" > $config_mak
3082echo "TOPSRC_DIR=$source_path" >> $config_mak
3083
3084if test "$skip_meson" = no; then
3085  cross="config-meson.cross.new"
3086  meson_quote() {
3087    test $# = 0 && return
3088    echo "'$(echo $* | sed "s/ /','/g")'"
3089  }
3090
3091  echo "# Automatically generated by configure - do not modify" > $cross
3092  echo "[properties]" >> $cross
3093
3094  # unroll any custom device configs
3095  for a in $device_archs; do
3096      eval "c=\$devices_${a}"
3097      echo "${a}-softmmu = '$c'" >> $cross
3098  done
3099
3100  test -z "$cxx" && echo "link_language = 'c'" >> $cross
3101  echo "[built-in options]" >> $cross
3102  echo "c_args = [$(meson_quote $CFLAGS $EXTRA_CFLAGS)]" >> $cross
3103  echo "cpp_args = [$(meson_quote $CXXFLAGS $EXTRA_CXXFLAGS)]" >> $cross
3104  test -n "$objcc" && echo "objc_args = [$(meson_quote $OBJCFLAGS $EXTRA_OBJCFLAGS)]" >> $cross
3105  echo "c_link_args = [$(meson_quote $CFLAGS $LDFLAGS $EXTRA_CFLAGS $EXTRA_LDFLAGS)]" >> $cross
3106  echo "cpp_link_args = [$(meson_quote $CXXFLAGS $LDFLAGS $EXTRA_CXXFLAGS $EXTRA_LDFLAGS)]" >> $cross
3107  echo "[binaries]" >> $cross
3108  echo "c = [$(meson_quote $cc $CPU_CFLAGS)]" >> $cross
3109  test -n "$cxx" && echo "cpp = [$(meson_quote $cxx $CPU_CFLAGS)]" >> $cross
3110  test -n "$objcc" && echo "objc = [$(meson_quote $objcc $CPU_CFLAGS)]" >> $cross
3111  echo "ar = [$(meson_quote $ar)]" >> $cross
3112  echo "nm = [$(meson_quote $nm)]" >> $cross
3113  echo "pkgconfig = [$(meson_quote $pkg_config_exe)]" >> $cross
3114  echo "ranlib = [$(meson_quote $ranlib)]" >> $cross
3115  if has $sdl2_config; then
3116    echo "sdl2-config = [$(meson_quote $sdl2_config)]" >> $cross
3117  fi
3118  echo "strip = [$(meson_quote $strip)]" >> $cross
3119  echo "windres = [$(meson_quote $windres)]" >> $cross
3120  if test "$cross_compile" = "yes"; then
3121    cross_arg="--cross-file config-meson.cross"
3122    echo "[host_machine]" >> $cross
3123    echo "system = '$targetos'" >> $cross
3124    case "$cpu" in
3125        i386)
3126            echo "cpu_family = 'x86'" >> $cross
3127            ;;
3128        *)
3129            echo "cpu_family = '$cpu'" >> $cross
3130            ;;
3131    esac
3132    echo "cpu = '$cpu'" >> $cross
3133    if test "$bigendian" = "yes" ; then
3134        echo "endian = 'big'" >> $cross
3135    else
3136        echo "endian = 'little'" >> $cross
3137    fi
3138  else
3139    cross_arg="--native-file config-meson.cross"
3140  fi
3141  mv $cross config-meson.cross
3142
3143  rm -rf meson-private meson-info meson-logs
3144  run_meson() {
3145    NINJA=$ninja $meson setup \
3146        --prefix "$prefix" \
3147        --libdir "$libdir" \
3148        --libexecdir "$libexecdir" \
3149        --bindir "$bindir" \
3150        --includedir "$includedir" \
3151        --datadir "$datadir" \
3152        --mandir "$mandir" \
3153        --sysconfdir "$sysconfdir" \
3154        --localedir "$localedir" \
3155        --localstatedir "$local_statedir" \
3156        -Daudio_drv_list=$audio_drv_list \
3157        -Ddefault_devices=$default_devices \
3158        -Ddocdir="$docdir" \
3159        -Diasl="$($iasl -h >/dev/null 2>&1 && printf %s "$iasl")" \
3160        -Dqemu_firmwarepath="$firmwarepath" \
3161        -Dqemu_suffix="$qemu_suffix" \
3162        -Dsmbd="$smbd" \
3163        -Dsphinx_build="$sphinx_build" \
3164        -Dtrace_file="$trace_file" \
3165        -Doptimization=$(if test "$debug" = yes; then echo 0; else echo 2; fi) \
3166        -Ddebug=$(if test "$debug_info" = yes; then echo true; else echo false; fi) \
3167        -Dwerror=$(if test "$werror" = yes; then echo true; else echo false; fi) \
3168        -Db_pie=$(if test "$pie" = yes; then echo true; else echo false; fi) \
3169        -Db_coverage=$(if test "$gcov" = yes; then echo true; else echo false; fi) \
3170        -Db_lto=$lto -Dcfi=$cfi -Dtcg=$tcg -Dxen=$xen \
3171        -Dcapstone=$capstone -Dfdt=$fdt -Dslirp=$slirp \
3172        $(test -n "${LIB_FUZZING_ENGINE+xxx}" && echo "-Dfuzzing_engine=$LIB_FUZZING_ENGINE") \
3173        $(if test "$default_feature" = no; then echo "-Dauto_features=disabled"; fi) \
3174        "$@" $cross_arg "$PWD" "$source_path"
3175  }
3176  eval run_meson $meson_options
3177  if test "$?" -ne 0 ; then
3178      error_exit "meson setup failed"
3179  fi
3180else
3181  if test -f meson-private/cmd_line.txt; then
3182    # Adjust old command line options whose type was changed
3183    # Avoids having to use "setup --wipe" when Meson is upgraded
3184    perl -i -ne '
3185      s/^gettext = true$/gettext = auto/;
3186      s/^gettext = false$/gettext = disabled/;
3187      /^b_staticpic/ && next;
3188      print;' meson-private/cmd_line.txt
3189  fi
3190fi
3191
3192# Save the configure command line for later reuse.
3193cat <<EOD >config.status
3194#!/bin/sh
3195# Generated by configure.
3196# Run this file to recreate the current configuration.
3197# Compiler output produced by configure, useful for debugging
3198# configure, is in config.log if it exists.
3199EOD
3200
3201preserve_env() {
3202    envname=$1
3203
3204    eval envval=\$$envname
3205
3206    if test -n "$envval"
3207    then
3208	echo "$envname='$envval'" >> config.status
3209	echo "export $envname" >> config.status
3210    else
3211	echo "unset $envname" >> config.status
3212    fi
3213}
3214
3215# Preserve various env variables that influence what
3216# features/build target configure will detect
3217preserve_env AR
3218preserve_env AS
3219preserve_env CC
3220preserve_env CPP
3221preserve_env CFLAGS
3222preserve_env CXX
3223preserve_env CXXFLAGS
3224preserve_env INSTALL
3225preserve_env LD
3226preserve_env LDFLAGS
3227preserve_env LD_LIBRARY_PATH
3228preserve_env LIBTOOL
3229preserve_env MAKE
3230preserve_env NM
3231preserve_env OBJCOPY
3232preserve_env PATH
3233preserve_env PKG_CONFIG
3234preserve_env PKG_CONFIG_LIBDIR
3235preserve_env PKG_CONFIG_PATH
3236preserve_env PYTHON
3237preserve_env SDL2_CONFIG
3238preserve_env SMBD
3239preserve_env STRIP
3240preserve_env WINDRES
3241
3242printf "exec" >>config.status
3243for i in "$0" "$@"; do
3244  test "$i" = --skip-meson || printf " %s" "$(quote_sh "$i")" >>config.status
3245done
3246echo ' "$@"' >>config.status
3247chmod +x config.status
3248
3249rm -r "$TMPDIR1"
3250