configure: fix sdl detection using sdl2-config
[qemu.git] / configure
1 #!/bin/sh
2 #
3 # qemu configure script (c) 2003 Fabrice Bellard
4 #
5
6 # Unset some variables known to interfere with behavior of common tools,
7 # just as autoconf does.
8 CLICOLOR_FORCE= GREP_OPTIONS=
9 unset CLICOLOR_FORCE GREP_OPTIONS
10
11 # Don't allow CCACHE, if present, to use cached results of compile tests!
12 export CCACHE_RECACHE=yes
13
14 # Temporary directory used for files created while
15 # configure runs. Since it is in the build directory
16 # we can safely blow away any previous version of it
17 # (and we need not jump through hoops to try to delete
18 # it when configure exits.)
19 TMPDIR1="config-temp"
20 rm -rf "${TMPDIR1}"
21 mkdir -p "${TMPDIR1}"
22 if [ $? -ne 0 ]; then
23     echo "ERROR: failed to create temporary directory"
24     exit 1
25 fi
26
27 TMPB="qemu-conf"
28 TMPC="${TMPDIR1}/${TMPB}.c"
29 TMPO="${TMPDIR1}/${TMPB}.o"
30 TMPCXX="${TMPDIR1}/${TMPB}.cxx"
31 TMPE="${TMPDIR1}/${TMPB}.exe"
32 TMPMO="${TMPDIR1}/${TMPB}.mo"
33
34 rm -f config.log
35
36 # Print a helpful header at the top of config.log
37 echo "# QEMU configure log $(date)" >> config.log
38 printf "# Configured with:" >> config.log
39 printf " '%s'" "$0" "$@" >> config.log
40 echo >> config.log
41 echo "#" >> config.log
42
43 print_error() {
44     (echo
45     echo "ERROR: $1"
46     while test -n "$2"; do
47         echo "       $2"
48         shift
49     done
50     echo) >&2
51 }
52
53 error_exit() {
54     print_error "$@"
55     exit 1
56 }
57
58 do_compiler() {
59     # Run the compiler, capturing its output to the log. First argument
60     # is compiler binary to execute.
61     local compiler="$1"
62     shift
63     if test -n "$BASH_VERSION"; then eval '
64         echo >>config.log "
65 funcs: ${FUNCNAME[*]}
66 lines: ${BASH_LINENO[*]}"
67     '; fi
68     echo $compiler "$@" >> config.log
69     $compiler "$@" >> config.log 2>&1 || return $?
70     # Test passed. If this is an --enable-werror build, rerun
71     # the test with -Werror and bail out if it fails. This
72     # makes warning-generating-errors in configure test code
73     # obvious to developers.
74     if test "$werror" != "yes"; then
75         return 0
76     fi
77     # Don't bother rerunning the compile if we were already using -Werror
78     case "$*" in
79         *-Werror*)
80            return 0
81         ;;
82     esac
83     echo $compiler -Werror "$@" >> config.log
84     $compiler -Werror "$@" >> config.log 2>&1 && return $?
85     error_exit "configure test passed without -Werror but failed with -Werror." \
86         "This is probably a bug in the configure script. The failing command" \
87         "will be at the bottom of config.log." \
88         "You can run configure with --disable-werror to bypass this check."
89 }
90
91 do_cc() {
92     do_compiler "$cc" "$@"
93 }
94
95 do_cxx() {
96     do_compiler "$cxx" "$@"
97 }
98
99 update_cxxflags() {
100     # Set QEMU_CXXFLAGS from QEMU_CFLAGS by filtering out those
101     # options which some versions of GCC's C++ compiler complain about
102     # because they only make sense for C programs.
103     QEMU_CXXFLAGS="$QEMU_CXXFLAGS -D__STDC_LIMIT_MACROS"
104
105     for arg in $QEMU_CFLAGS; do
106         case $arg in
107             -Wstrict-prototypes|-Wmissing-prototypes|-Wnested-externs|\
108             -Wold-style-declaration|-Wold-style-definition|-Wredundant-decls)
109                 ;;
110             -std=gnu99)
111                 QEMU_CXXFLAGS=${QEMU_CXXFLAGS:+$QEMU_CXXFLAGS }"-std=gnu++98"
112                 ;;
113             *)
114                 QEMU_CXXFLAGS=${QEMU_CXXFLAGS:+$QEMU_CXXFLAGS }$arg
115                 ;;
116         esac
117     done
118 }
119
120 compile_object() {
121   local_cflags="$1"
122   do_cc $QEMU_CFLAGS $local_cflags -c -o $TMPO $TMPC
123 }
124
125 compile_prog() {
126   local_cflags="$1"
127   local_ldflags="$2"
128   do_cc $QEMU_CFLAGS $local_cflags -o $TMPE $TMPC $LDFLAGS $local_ldflags
129 }
130
131 # symbolically link $1 to $2.  Portable version of "ln -sf".
132 symlink() {
133   rm -rf "$2"
134   mkdir -p "$(dirname "$2")"
135   ln -s "$1" "$2"
136 }
137
138 # check whether a command is available to this shell (may be either an
139 # executable or a builtin)
140 has() {
141     type "$1" >/dev/null 2>&1
142 }
143
144 # search for an executable in PATH
145 path_of() {
146     local_command="$1"
147     local_ifs="$IFS"
148     local_dir=""
149
150     # pathname has a dir component?
151     if [ "${local_command#*/}" != "$local_command" ]; then
152         if [ -x "$local_command" ] && [ ! -d "$local_command" ]; then
153             echo "$local_command"
154             return 0
155         fi
156     fi
157     if [ -z "$local_command" ]; then
158         return 1
159     fi
160
161     IFS=:
162     for local_dir in $PATH; do
163         if [ -x "$local_dir/$local_command" ] && [ ! -d "$local_dir/$local_command" ]; then
164             echo "$local_dir/$local_command"
165             IFS="${local_ifs:-$(printf ' \t\n')}"
166             return 0
167         fi
168     done
169     # not found
170     IFS="${local_ifs:-$(printf ' \t\n')}"
171     return 1
172 }
173
174 have_backend () {
175     echo "$trace_backends" | grep "$1" >/dev/null
176 }
177
178 glob() {
179     eval test -z '"${1#'"$2"'}"'
180 }
181
182 supported_hax_target() {
183     test "$hax" = "yes" || return 1
184     glob "$1" "*-softmmu" || return 1
185     case "${1%-softmmu}" in
186         i386|x86_64)
187             return 0
188         ;;
189     esac
190     return 1
191 }
192
193 supported_kvm_target() {
194     test "$kvm" = "yes" || return 1
195     glob "$1" "*-softmmu" || return 1
196     case "${1%-softmmu}:$cpu" in
197         arm:arm | aarch64:aarch64 | \
198         i386:i386 | i386:x86_64 | i386:x32 | \
199         x86_64:i386 | x86_64:x86_64 | x86_64:x32 | \
200         mips:mips | mipsel:mips | \
201         ppc:ppc | ppc64:ppc | ppc:ppc64 | ppc64:ppc64 | ppc64:ppc64le | \
202         s390x:s390x)
203             return 0
204         ;;
205     esac
206     return 1
207 }
208
209 supported_xen_target() {
210     test "$xen" = "yes" || return 1
211     glob "$1" "*-softmmu" || return 1
212     # Only i386 and x86_64 provide the xenpv machine.
213     case "${1%-softmmu}" in
214         i386|x86_64)
215             return 0
216         ;;
217     esac
218     return 1
219 }
220
221 supported_hvf_target() {
222     test "$hvf" = "yes" || return 1
223     glob "$1" "*-softmmu" || return 1
224     case "${1%-softmmu}" in
225         x86_64)
226             return 0
227         ;;
228     esac
229     return 1
230 }
231
232 supported_whpx_target() {
233     test "$whpx" = "yes" || return 1
234     glob "$1" "*-softmmu" || return 1
235     case "${1%-softmmu}" in
236         i386|x86_64)
237             return 0
238         ;;
239     esac
240     return 1
241 }
242
243 supported_target() {
244     case "$1" in
245         *-softmmu)
246             ;;
247         *-linux-user)
248             if test "$linux" != "yes"; then
249                 print_error "Target '$target' is only available on a Linux host"
250                 return 1
251             fi
252             ;;
253         *-bsd-user)
254             if test "$bsd" != "yes"; then
255                 print_error "Target '$target' is only available on a BSD host"
256                 return 1
257             fi
258             ;;
259         *)
260             print_error "Invalid target name '$target'"
261             return 1
262             ;;
263     esac
264     test "$tcg" = "yes" && return 0
265     supported_kvm_target "$1" && return 0
266     supported_xen_target "$1" && return 0
267     supported_hax_target "$1" && return 0
268     supported_hvf_target "$1" && return 0
269     supported_whpx_target "$1" && return 0
270     print_error "TCG disabled, but hardware accelerator not available for '$target'"
271     return 1
272 }
273
274
275 ld_has() {
276     $ld --help 2>/dev/null | grep ".$1" >/dev/null 2>&1
277 }
278
279 # make source path absolute
280 source_path=$(cd "$(dirname -- "$0")"; pwd)
281
282 if printf %s\\n "$source_path" "$PWD" | grep -q "[[:space:]:]";
283 then
284   error_exit "main directory cannot contain spaces nor colons"
285 fi
286
287 # default parameters
288 cpu=""
289 iasl="iasl"
290 interp_prefix="/usr/gnemul/qemu-%M"
291 static="no"
292 cross_prefix=""
293 audio_drv_list=""
294 block_drv_rw_whitelist=""
295 block_drv_ro_whitelist=""
296 host_cc="cc"
297 libs_cpu=""
298 libs_softmmu=""
299 libs_tools=""
300 audio_pt_int=""
301 audio_win_int=""
302 libs_qga=""
303 debug_info="yes"
304 stack_protector=""
305
306 if test -e "$source_path/.git"
307 then
308     git_update=yes
309     git_submodules="ui/keycodemapdb"
310     git_submodules="$git_submodules tests/fp/berkeley-testfloat-3"
311     git_submodules="$git_submodules tests/fp/berkeley-softfloat-3"
312 else
313     git_update=no
314     git_submodules=""
315
316     if ! test -f "$source_path/ui/keycodemapdb/README"
317     then
318         echo
319         echo "ERROR: missing file $source_path/ui/keycodemapdb/README"
320         echo
321         echo "This is not a GIT checkout but module content appears to"
322         echo "be missing. Do not use 'git archive' or GitHub download links"
323         echo "to acquire QEMU source archives. Non-GIT builds are only"
324         echo "supported with source archives linked from:"
325         echo
326         echo "  https://www.qemu.org/download/#source"
327         echo
328         echo "Developers working with GIT can use scripts/archive-source.sh"
329         echo "if they need to create valid source archives."
330         echo
331         exit 1
332     fi
333 fi
334 git="git"
335
336 # Don't accept a target_list environment variable.
337 unset target_list
338 unset target_list_exclude
339
340 # Default value for a variable defining feature "foo".
341 #  * foo="no"  feature will only be used if --enable-foo arg is given
342 #  * foo=""    feature will be searched for, and if found, will be used
343 #              unless --disable-foo is given
344 #  * foo="yes" this value will only be set by --enable-foo flag.
345 #              feature will searched for,
346 #              if not found, configure exits with error
347 #
348 # Always add --enable-foo and --disable-foo command line args.
349 # Distributions want to ensure that several features are compiled in, and it
350 # is impossible without a --enable-foo that exits if a feature is not found.
351
352 bluez=""
353 brlapi=""
354 curl=""
355 curses=""
356 docs=""
357 fdt=""
358 netmap="no"
359 sdl=""
360 sdl_image=""
361 virtfs=""
362 mpath=""
363 vnc="yes"
364 sparse="no"
365 vde=""
366 vnc_sasl=""
367 vnc_jpeg=""
368 vnc_png=""
369 xkbcommon=""
370 xen=""
371 xen_ctrl_version=""
372 xen_pci_passthrough=""
373 linux_aio=""
374 cap_ng=""
375 attr=""
376 libattr=""
377 xfs=""
378 tcg="yes"
379 membarrier=""
380 vhost_net=""
381 vhost_crypto=""
382 vhost_scsi=""
383 vhost_vsock=""
384 vhost_user=""
385 kvm="no"
386 hax="no"
387 hvf="no"
388 whpx="no"
389 rdma=""
390 pvrdma=""
391 gprof="no"
392 debug_tcg="no"
393 debug="no"
394 sanitizers="no"
395 fortify_source=""
396 strip_opt="yes"
397 tcg_interpreter="no"
398 bigendian="no"
399 mingw32="no"
400 gcov="no"
401 gcov_tool="gcov"
402 EXESUF=""
403 DSOSUF=".so"
404 LDFLAGS_SHARED="-shared"
405 modules="no"
406 prefix="/usr/local"
407 mandir="\${prefix}/share/man"
408 datadir="\${prefix}/share"
409 firmwarepath="\${prefix}/share/qemu-firmware"
410 qemu_docdir="\${prefix}/share/doc/qemu"
411 bindir="\${prefix}/bin"
412 libdir="\${prefix}/lib"
413 libexecdir="\${prefix}/libexec"
414 includedir="\${prefix}/include"
415 sysconfdir="\${prefix}/etc"
416 local_statedir="\${prefix}/var"
417 confsuffix="/qemu"
418 slirp=""
419 oss_lib=""
420 bsd="no"
421 linux="no"
422 solaris="no"
423 profiler="no"
424 cocoa="no"
425 softmmu="yes"
426 linux_user="no"
427 bsd_user="no"
428 blobs="yes"
429 pkgversion=""
430 pie=""
431 qom_cast_debug="yes"
432 trace_backends="log"
433 trace_file="trace"
434 spice=""
435 rbd=""
436 smartcard=""
437 libusb=""
438 usb_redir=""
439 opengl=""
440 opengl_dmabuf="no"
441 cpuid_h="no"
442 avx2_opt=""
443 zlib="yes"
444 capstone=""
445 lzo=""
446 snappy=""
447 bzip2=""
448 lzfse=""
449 guest_agent=""
450 guest_agent_with_vss="no"
451 guest_agent_ntddscsi="no"
452 guest_agent_msi=""
453 vss_win32_sdk=""
454 win_sdk="no"
455 want_tools="yes"
456 libiscsi=""
457 libnfs=""
458 coroutine=""
459 coroutine_pool=""
460 debug_stack_usage="no"
461 crypto_afalg="no"
462 seccomp=""
463 glusterfs=""
464 glusterfs_xlator_opt="no"
465 glusterfs_discard="no"
466 glusterfs_fallocate="no"
467 glusterfs_zerofill="no"
468 glusterfs_ftruncate_has_stat="no"
469 glusterfs_iocb_has_stat="no"
470 gtk=""
471 gtk_gl="no"
472 tls_priority="NORMAL"
473 gnutls=""
474 nettle=""
475 gcrypt=""
476 gcrypt_hmac="no"
477 auth_pam=""
478 vte=""
479 virglrenderer=""
480 tpm=""
481 libssh=""
482 live_block_migration="yes"
483 numa=""
484 tcmalloc="no"
485 jemalloc="no"
486 replication="yes"
487 vxhs=""
488 bochs="yes"
489 cloop="yes"
490 dmg="yes"
491 qcow1="yes"
492 vdi="yes"
493 vvfat="yes"
494 qed="yes"
495 parallels="yes"
496 sheepdog="yes"
497 libxml2=""
498 docker="no"
499 debug_mutex="no"
500 libpmem=""
501 default_devices="yes"
502
503 # cross compilers defaults, can be overridden with --cross-cc-ARCH
504 cross_cc_aarch64="aarch64-linux-gnu-gcc"
505 cross_cc_aarch64_be="$cross_cc_aarch64"
506 cross_cc_cflags_aarch64_be="-mbig-endian"
507 cross_cc_arm="arm-linux-gnueabihf-gcc"
508 cross_cc_cflags_armeb="-mbig-endian"
509 cross_cc_i386="i386-pc-linux-gnu-gcc"
510 cross_cc_cflags_i386=""
511 cross_cc_ppc="powerpc-linux-gnu-gcc"
512 cross_cc_cflags_ppc="-m32"
513 cross_cc_ppc64="powerpc-linux-gnu-gcc"
514 cross_cc_cflags_ppc64="-m64"
515 cross_cc_ppc64le="powerpc64le-linux-gnu-gcc"
516
517 enabled_cross_compilers=""
518
519 supported_cpu="no"
520 supported_os="no"
521 bogus_os="no"
522 malloc_trim=""
523
524 # parse CC options first
525 for opt do
526   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
527   case "$opt" in
528   --cross-prefix=*) cross_prefix="$optarg"
529   ;;
530   --cc=*) CC="$optarg"
531   ;;
532   --cxx=*) CXX="$optarg"
533   ;;
534   --cpu=*) cpu="$optarg"
535   ;;
536   --extra-cflags=*) QEMU_CFLAGS="$QEMU_CFLAGS $optarg"
537   ;;
538   --extra-cxxflags=*) QEMU_CXXFLAGS="$QEMU_CXXFLAGS $optarg"
539   ;;
540   --extra-ldflags=*) LDFLAGS="$LDFLAGS $optarg"
541                      EXTRA_LDFLAGS="$optarg"
542   ;;
543   --enable-debug-info) debug_info="yes"
544   ;;
545   --disable-debug-info) debug_info="no"
546   ;;
547   --cross-cc-*[!a-zA-Z0-9_-]*=*) error_exit "Passed bad --cross-cc-FOO option"
548   ;;
549   --cross-cc-cflags-*) cc_arch=${opt#--cross-cc-flags-}; cc_arch=${cc_arch%%=*}
550                       eval "cross_cc_cflags_${cc_arch}=\$optarg"
551   ;;
552   --cross-cc-*) cc_arch=${opt#--cross-cc-}; cc_arch=${cc_arch%%=*}
553                 eval "cross_cc_${cc_arch}=\$optarg"
554   ;;
555   esac
556 done
557 # OS specific
558 # Using uname is really, really broken.  Once we have the right set of checks
559 # we can eliminate its usage altogether.
560
561 # Preferred compiler:
562 #  ${CC} (if set)
563 #  ${cross_prefix}gcc (if cross-prefix specified)
564 #  system compiler
565 if test -z "${CC}${cross_prefix}"; then
566   cc="$host_cc"
567 else
568   cc="${CC-${cross_prefix}gcc}"
569 fi
570
571 if test -z "${CXX}${cross_prefix}"; then
572   cxx="c++"
573 else
574   cxx="${CXX-${cross_prefix}g++}"
575 fi
576
577 ar="${AR-${cross_prefix}ar}"
578 as="${AS-${cross_prefix}as}"
579 ccas="${CCAS-$cc}"
580 cpp="${CPP-$cc -E}"
581 objcopy="${OBJCOPY-${cross_prefix}objcopy}"
582 ld="${LD-${cross_prefix}ld}"
583 ranlib="${RANLIB-${cross_prefix}ranlib}"
584 nm="${NM-${cross_prefix}nm}"
585 strip="${STRIP-${cross_prefix}strip}"
586 windres="${WINDRES-${cross_prefix}windres}"
587 pkg_config_exe="${PKG_CONFIG-${cross_prefix}pkg-config}"
588 query_pkg_config() {
589     "${pkg_config_exe}" ${QEMU_PKG_CONFIG_FLAGS} "$@"
590 }
591 pkg_config=query_pkg_config
592 sdl2_config="${SDL2_CONFIG-${cross_prefix}sdl2-config}"
593
594 # If the user hasn't specified ARFLAGS, default to 'rv', just as make does.
595 ARFLAGS="${ARFLAGS-rv}"
596
597 # default flags for all hosts
598 # We use -fwrapv to tell the compiler that we require a C dialect where
599 # left shift of signed integers is well defined and has the expected
600 # 2s-complement style results. (Both clang and gcc agree that it
601 # provides these semantics.)
602 QEMU_CFLAGS="-fno-strict-aliasing -fno-common -fwrapv -std=gnu99 $QEMU_CFLAGS"
603 QEMU_CFLAGS="-Wall -Wundef -Wwrite-strings -Wmissing-prototypes $QEMU_CFLAGS"
604 QEMU_CFLAGS="-Wstrict-prototypes -Wredundant-decls $QEMU_CFLAGS"
605 QEMU_CFLAGS="-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE $QEMU_CFLAGS"
606 QEMU_INCLUDES="-iquote . -iquote \$(SRC_PATH) -iquote \$(SRC_PATH)/accel/tcg -iquote \$(SRC_PATH)/include"
607 if test "$debug_info" = "yes"; then
608     CFLAGS="-g $CFLAGS"
609     LDFLAGS="-g $LDFLAGS"
610 fi
611
612 # running configure in the source tree?
613 # we know that's the case if configure is there.
614 if test -f "./configure"; then
615     pwd_is_source_path="y"
616 else
617     pwd_is_source_path="n"
618 fi
619
620 check_define() {
621 cat > $TMPC <<EOF
622 #if !defined($1)
623 #error $1 not defined
624 #endif
625 int main(void) { return 0; }
626 EOF
627   compile_object
628 }
629
630 check_include() {
631 cat > $TMPC <<EOF
632 #include <$1>
633 int main(void) { return 0; }
634 EOF
635   compile_object
636 }
637
638 write_c_skeleton() {
639     cat > $TMPC <<EOF
640 int main(void) { return 0; }
641 EOF
642 }
643
644 if check_define __linux__ ; then
645   targetos="Linux"
646 elif check_define _WIN32 ; then
647   targetos='MINGW32'
648 elif check_define __OpenBSD__ ; then
649   targetos='OpenBSD'
650 elif check_define __sun__ ; then
651   targetos='SunOS'
652 elif check_define __HAIKU__ ; then
653   targetos='Haiku'
654 elif check_define __FreeBSD__ ; then
655   targetos='FreeBSD'
656 elif check_define __FreeBSD_kernel__ && check_define __GLIBC__; then
657   targetos='GNU/kFreeBSD'
658 elif check_define __DragonFly__ ; then
659   targetos='DragonFly'
660 elif check_define __NetBSD__; then
661   targetos='NetBSD'
662 elif check_define __APPLE__; then
663   targetos='Darwin'
664 else
665   # This is a fatal error, but don't report it yet, because we
666   # might be going to just print the --help text, or it might
667   # be the result of a missing compiler.
668   targetos='bogus'
669   bogus_os='yes'
670 fi
671
672 # Some host OSes need non-standard checks for which CPU to use.
673 # Note that these checks are broken for cross-compilation: if you're
674 # cross-compiling to one of these OSes then you'll need to specify
675 # the correct CPU with the --cpu option.
676 case $targetos in
677 Darwin)
678   # on Leopard most of the system is 32-bit, so we have to ask the kernel if we can
679   # run 64-bit userspace code.
680   # If the user didn't specify a CPU explicitly and the kernel says this is
681   # 64 bit hw, then assume x86_64. Otherwise fall through to the usual detection code.
682   if test -z "$cpu" && test "$(sysctl -n hw.optional.x86_64)" = "1"; then
683     cpu="x86_64"
684   fi
685   ;;
686 SunOS)
687   # $(uname -m) returns i86pc even on an x86_64 box, so default based on isainfo
688   if test -z "$cpu" && test "$(isainfo -k)" = "amd64"; then
689     cpu="x86_64"
690   fi
691 esac
692
693 if test ! -z "$cpu" ; then
694   # command line argument
695   :
696 elif check_define __i386__ ; then
697   cpu="i386"
698 elif check_define __x86_64__ ; then
699   if check_define __ILP32__ ; then
700     cpu="x32"
701   else
702     cpu="x86_64"
703   fi
704 elif check_define __sparc__ ; then
705   if check_define __arch64__ ; then
706     cpu="sparc64"
707   else
708     cpu="sparc"
709   fi
710 elif check_define _ARCH_PPC ; then
711   if check_define _ARCH_PPC64 ; then
712     if check_define _LITTLE_ENDIAN ; then
713       cpu="ppc64le"
714     else
715       cpu="ppc64"
716     fi
717   else
718     cpu="ppc"
719   fi
720 elif check_define __mips__ ; then
721   cpu="mips"
722 elif check_define __s390__ ; then
723   if check_define __s390x__ ; then
724     cpu="s390x"
725   else
726     cpu="s390"
727   fi
728 elif check_define __riscv ; then
729   if check_define _LP64 ; then
730     cpu="riscv64"
731   else
732     cpu="riscv32"
733   fi
734 elif check_define __arm__ ; then
735   cpu="arm"
736 elif check_define __aarch64__ ; then
737   cpu="aarch64"
738 else
739   cpu=$(uname -m)
740 fi
741
742 ARCH=
743 # Normalise host CPU name and set ARCH.
744 # Note that this case should only have supported host CPUs, not guests.
745 case "$cpu" in
746   ppc|ppc64|s390|s390x|sparc64|x32|riscv32|riscv64)
747     supported_cpu="yes"
748     eval "cross_cc_${cpu}=\$host_cc"
749   ;;
750   ppc64le)
751     ARCH="ppc64"
752     supported_cpu="yes"
753     cross_cc_ppc64le=$host_cc
754   ;;
755   i386|i486|i586|i686|i86pc|BePC)
756     cpu="i386"
757     supported_cpu="yes"
758     cross_cc_i386=$host_cc
759   ;;
760   x86_64|amd64)
761     cpu="x86_64"
762     supported_cpu="yes"
763     cross_cc_x86_64=$host_cc
764   ;;
765   armv*b|armv*l|arm)
766     cpu="arm"
767     supported_cpu="yes"
768     cross_cc_arm=$host_cc
769   ;;
770   aarch64)
771     cpu="aarch64"
772     supported_cpu="yes"
773     cross_cc_aarch64=$host_cc
774   ;;
775   mips*)
776     cpu="mips"
777     supported_cpu="yes"
778     cross_cc_mips=$host_cc
779   ;;
780   sparc|sun4[cdmuv])
781     cpu="sparc"
782     supported_cpu="yes"
783     cross_cc_sparc=$host_cc
784   ;;
785   *)
786     # This will result in either an error or falling back to TCI later
787     ARCH=unknown
788   ;;
789 esac
790 if test -z "$ARCH"; then
791   ARCH="$cpu"
792 fi
793
794 # OS specific
795
796 # host *BSD for user mode
797 HOST_VARIANT_DIR=""
798
799 case $targetos in
800 MINGW32*)
801   mingw32="yes"
802   hax="yes"
803   vhost_user="no"
804   audio_possible_drivers="dsound sdl"
805   if check_include dsound.h; then
806     audio_drv_list="dsound"
807   else
808     audio_drv_list=""
809   fi
810   supported_os="yes"
811 ;;
812 GNU/kFreeBSD)
813   bsd="yes"
814   audio_drv_list="oss try-sdl"
815   audio_possible_drivers="oss sdl pa"
816 ;;
817 FreeBSD)
818   bsd="yes"
819   make="${MAKE-gmake}"
820   audio_drv_list="oss try-sdl"
821   audio_possible_drivers="oss sdl pa"
822   # needed for kinfo_getvmmap(3) in libutil.h
823   LIBS="-lutil $LIBS"
824   # needed for kinfo_getproc
825   libs_qga="-lutil $libs_qga"
826   netmap=""  # enable netmap autodetect
827   HOST_VARIANT_DIR="freebsd"
828   supported_os="yes"
829 ;;
830 DragonFly)
831   bsd="yes"
832   make="${MAKE-gmake}"
833   audio_drv_list="oss try-sdl"
834   audio_possible_drivers="oss sdl pa"
835   HOST_VARIANT_DIR="dragonfly"
836 ;;
837 NetBSD)
838   bsd="yes"
839   hax="yes"
840   make="${MAKE-gmake}"
841   audio_drv_list="oss try-sdl"
842   audio_possible_drivers="oss sdl"
843   oss_lib="-lossaudio"
844   HOST_VARIANT_DIR="netbsd"
845   supported_os="yes"
846 ;;
847 OpenBSD)
848   bsd="yes"
849   make="${MAKE-gmake}"
850   audio_drv_list="try-sdl"
851   audio_possible_drivers="sdl"
852   HOST_VARIANT_DIR="openbsd"
853   supported_os="yes"
854 ;;
855 Darwin)
856   bsd="yes"
857   darwin="yes"
858   hax="yes"
859   hvf="yes"
860   LDFLAGS_SHARED="-bundle -undefined dynamic_lookup"
861   if [ "$cpu" = "x86_64" ] ; then
862     QEMU_CFLAGS="-arch x86_64 $QEMU_CFLAGS"
863     LDFLAGS="-arch x86_64 $LDFLAGS"
864   fi
865   cocoa="yes"
866   audio_drv_list="coreaudio try-sdl"
867   audio_possible_drivers="coreaudio sdl"
868   LDFLAGS="-framework CoreFoundation -framework IOKit $LDFLAGS"
869   libs_softmmu="-F/System/Library/Frameworks -framework Cocoa -framework IOKit $libs_softmmu"
870   # Disable attempts to use ObjectiveC features in os/object.h since they
871   # won't work when we're compiling with gcc as a C compiler.
872   QEMU_CFLAGS="-DOS_OBJECT_USE_OBJC=0 $QEMU_CFLAGS"
873   HOST_VARIANT_DIR="darwin"
874   supported_os="yes"
875 ;;
876 SunOS)
877   solaris="yes"
878   make="${MAKE-gmake}"
879   install="${INSTALL-ginstall}"
880   smbd="${SMBD-/usr/sfw/sbin/smbd}"
881   if test -f /usr/include/sys/soundcard.h ; then
882     audio_drv_list="oss try-sdl"
883   fi
884   audio_possible_drivers="oss sdl"
885 # needed for CMSG_ macros in sys/socket.h
886   QEMU_CFLAGS="-D_XOPEN_SOURCE=600 $QEMU_CFLAGS"
887 # needed for TIOCWIN* defines in termios.h
888   QEMU_CFLAGS="-D__EXTENSIONS__ $QEMU_CFLAGS"
889   QEMU_CFLAGS="-std=gnu99 $QEMU_CFLAGS"
890   solarisnetlibs="-lsocket -lnsl -lresolv"
891   LIBS="$solarisnetlibs $LIBS"
892   libs_qga="$solarisnetlibs $libs_qga"
893 ;;
894 Haiku)
895   haiku="yes"
896   QEMU_CFLAGS="-DB_USE_POSITIVE_POSIX_ERRORS $QEMU_CFLAGS"
897   LIBS="-lposix_error_mapper -lnetwork $LIBS"
898 ;;
899 Linux)
900   audio_drv_list="try-pa oss"
901   audio_possible_drivers="oss alsa sdl pa"
902   linux="yes"
903   linux_user="yes"
904   kvm="yes"
905   QEMU_INCLUDES="-I\$(SRC_PATH)/linux-headers -I$PWD/linux-headers $QEMU_INCLUDES"
906   supported_os="yes"
907   libudev="yes"
908 ;;
909 esac
910
911 if [ "$bsd" = "yes" ] ; then
912   if [ "$darwin" != "yes" ] ; then
913     bsd_user="yes"
914   fi
915 fi
916
917 : ${make=${MAKE-make}}
918 : ${install=${INSTALL-install}}
919 # We prefer python 3.x. A bare 'python' is traditionally
920 # python 2.x, but some distros have it as python 3.x, so
921 # we check that before python2
922 python=
923 for binary in "${PYTHON-python3}" python python2
924 do
925     if has "$binary"
926     then
927         python="$binary"
928         break
929     fi
930 done
931 : ${smbd=${SMBD-/usr/sbin/smbd}}
932
933 # Default objcc to clang if available, otherwise use CC
934 if has clang; then
935   objcc=clang
936 else
937   objcc="$cc"
938 fi
939
940 if test "$mingw32" = "yes" ; then
941   EXESUF=".exe"
942   DSOSUF=".dll"
943   # MinGW needs -mthreads for TLS and macro _MT.
944   QEMU_CFLAGS="-mthreads $QEMU_CFLAGS"
945   LIBS="-lwinmm -lws2_32 -liphlpapi $LIBS"
946   write_c_skeleton;
947   if compile_prog "" "-liberty" ; then
948     LIBS="-liberty $LIBS"
949   fi
950   prefix="c:/Program Files/QEMU"
951   mandir="\${prefix}"
952   datadir="\${prefix}"
953   qemu_docdir="\${prefix}"
954   bindir="\${prefix}"
955   sysconfdir="\${prefix}"
956   local_statedir=
957   confsuffix=""
958   libs_qga="-lws2_32 -lwinmm -lpowrprof -lwtsapi32 -lwininet -liphlpapi -lnetapi32 $libs_qga"
959 fi
960
961 werror=""
962
963 for opt do
964   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
965   case "$opt" in
966   --help|-h) show_help=yes
967   ;;
968   --version|-V) exec cat $source_path/VERSION
969   ;;
970   --prefix=*) prefix="$optarg"
971   ;;
972   --interp-prefix=*) interp_prefix="$optarg"
973   ;;
974   --cross-prefix=*)
975   ;;
976   --cc=*)
977   ;;
978   --host-cc=*) host_cc="$optarg"
979   ;;
980   --cxx=*)
981   ;;
982   --iasl=*) iasl="$optarg"
983   ;;
984   --objcc=*) objcc="$optarg"
985   ;;
986   --make=*) make="$optarg"
987   ;;
988   --install=*) install="$optarg"
989   ;;
990   --python=*) python="$optarg"
991   ;;
992   --gcov=*) gcov_tool="$optarg"
993   ;;
994   --smbd=*) smbd="$optarg"
995   ;;
996   --extra-cflags=*)
997   ;;
998   --extra-cxxflags=*)
999   ;;
1000   --extra-ldflags=*)
1001   ;;
1002   --enable-debug-info)
1003   ;;
1004   --disable-debug-info)
1005   ;;
1006   --cross-cc-*)
1007   ;;
1008   --enable-modules)
1009       modules="yes"
1010   ;;
1011   --disable-modules)
1012       modules="no"
1013   ;;
1014   --cpu=*)
1015   ;;
1016   --target-list=*) target_list="$optarg"
1017                    if test "$target_list_exclude"; then
1018                        error_exit "Can't mix --target-list with --target-list-exclude"
1019                    fi
1020   ;;
1021   --target-list-exclude=*) target_list_exclude="$optarg"
1022                    if test "$target_list"; then
1023                        error_exit "Can't mix --target-list-exclude with --target-list"
1024                    fi
1025   ;;
1026   --enable-trace-backends=*) trace_backends="$optarg"
1027   ;;
1028   # XXX: backwards compatibility
1029   --enable-trace-backend=*) trace_backends="$optarg"
1030   ;;
1031   --with-trace-file=*) trace_file="$optarg"
1032   ;;
1033   --with-default-devices) default_devices="yes"
1034   ;;
1035   --without-default-devices) default_devices="no"
1036   ;;
1037   --enable-gprof) gprof="yes"
1038   ;;
1039   --enable-gcov) gcov="yes"
1040   ;;
1041   --static)
1042     static="yes"
1043     LDFLAGS="-static $LDFLAGS"
1044     QEMU_PKG_CONFIG_FLAGS="--static $QEMU_PKG_CONFIG_FLAGS"
1045   ;;
1046   --mandir=*) mandir="$optarg"
1047   ;;
1048   --bindir=*) bindir="$optarg"
1049   ;;
1050   --libdir=*) libdir="$optarg"
1051   ;;
1052   --libexecdir=*) libexecdir="$optarg"
1053   ;;
1054   --includedir=*) includedir="$optarg"
1055   ;;
1056   --datadir=*) datadir="$optarg"
1057   ;;
1058   --with-confsuffix=*) confsuffix="$optarg"
1059   ;;
1060   --docdir=*) qemu_docdir="$optarg"
1061   ;;
1062   --sysconfdir=*) sysconfdir="$optarg"
1063   ;;
1064   --localstatedir=*) local_statedir="$optarg"
1065   ;;
1066   --firmwarepath=*) firmwarepath="$optarg"
1067   ;;
1068   --host=*|--build=*|\
1069   --disable-dependency-tracking|\
1070   --sbindir=*|--sharedstatedir=*|\
1071   --oldincludedir=*|--datarootdir=*|--infodir=*|--localedir=*|\
1072   --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
1073     # These switches are silently ignored, for compatibility with
1074     # autoconf-generated configure scripts. This allows QEMU's
1075     # configure to be used by RPM and similar macros that set
1076     # lots of directory switches by default.
1077   ;;
1078   --disable-sdl) sdl="no"
1079   ;;
1080   --enable-sdl) sdl="yes"
1081   ;;
1082   --disable-sdl-image) sdl_image="no"
1083   ;;
1084   --enable-sdl-image) sdl_image="yes"
1085   ;;
1086   --disable-qom-cast-debug) qom_cast_debug="no"
1087   ;;
1088   --enable-qom-cast-debug) qom_cast_debug="yes"
1089   ;;
1090   --disable-virtfs) virtfs="no"
1091   ;;
1092   --enable-virtfs) virtfs="yes"
1093   ;;
1094   --disable-mpath) mpath="no"
1095   ;;
1096   --enable-mpath) mpath="yes"
1097   ;;
1098   --disable-vnc) vnc="no"
1099   ;;
1100   --enable-vnc) vnc="yes"
1101   ;;
1102   --oss-lib=*) oss_lib="$optarg"
1103   ;;
1104   --audio-drv-list=*) audio_drv_list="$optarg"
1105   ;;
1106   --block-drv-rw-whitelist=*|--block-drv-whitelist=*) block_drv_rw_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
1107   ;;
1108   --block-drv-ro-whitelist=*) block_drv_ro_whitelist=$(echo "$optarg" | sed -e 's/,/ /g')
1109   ;;
1110   --enable-debug-tcg) debug_tcg="yes"
1111   ;;
1112   --disable-debug-tcg) debug_tcg="no"
1113   ;;
1114   --enable-debug)
1115       # Enable debugging options that aren't excessively noisy
1116       debug_tcg="yes"
1117       debug_mutex="yes"
1118       debug="yes"
1119       strip_opt="no"
1120       fortify_source="no"
1121   ;;
1122   --enable-sanitizers) sanitizers="yes"
1123   ;;
1124   --disable-sanitizers) sanitizers="no"
1125   ;;
1126   --enable-sparse) sparse="yes"
1127   ;;
1128   --disable-sparse) sparse="no"
1129   ;;
1130   --disable-strip) strip_opt="no"
1131   ;;
1132   --disable-vnc-sasl) vnc_sasl="no"
1133   ;;
1134   --enable-vnc-sasl) vnc_sasl="yes"
1135   ;;
1136   --disable-vnc-jpeg) vnc_jpeg="no"
1137   ;;
1138   --enable-vnc-jpeg) vnc_jpeg="yes"
1139   ;;
1140   --disable-vnc-png) vnc_png="no"
1141   ;;
1142   --enable-vnc-png) vnc_png="yes"
1143   ;;
1144   --disable-slirp) slirp="no"
1145   ;;
1146   --enable-slirp=git) slirp="git"
1147   ;;
1148   --enable-slirp=system) slirp="system"
1149   ;;
1150   --disable-vde) vde="no"
1151   ;;
1152   --enable-vde) vde="yes"
1153   ;;
1154   --disable-netmap) netmap="no"
1155   ;;
1156   --enable-netmap) netmap="yes"
1157   ;;
1158   --disable-xen) xen="no"
1159   ;;
1160   --enable-xen) xen="yes"
1161   ;;
1162   --disable-xen-pci-passthrough) xen_pci_passthrough="no"
1163   ;;
1164   --enable-xen-pci-passthrough) xen_pci_passthrough="yes"
1165   ;;
1166   --disable-brlapi) brlapi="no"
1167   ;;
1168   --enable-brlapi) brlapi="yes"
1169   ;;
1170   --disable-bluez) bluez="no"
1171   ;;
1172   --enable-bluez) bluez="yes"
1173   ;;
1174   --disable-kvm) kvm="no"
1175   ;;
1176   --enable-kvm) kvm="yes"
1177   ;;
1178   --disable-hax) hax="no"
1179   ;;
1180   --enable-hax) hax="yes"
1181   ;;
1182   --disable-hvf) hvf="no"
1183   ;;
1184   --enable-hvf) hvf="yes"
1185   ;;
1186   --disable-whpx) whpx="no"
1187   ;;
1188   --enable-whpx) whpx="yes"
1189   ;;
1190   --disable-tcg-interpreter) tcg_interpreter="no"
1191   ;;
1192   --enable-tcg-interpreter) tcg_interpreter="yes"
1193   ;;
1194   --disable-cap-ng)  cap_ng="no"
1195   ;;
1196   --enable-cap-ng) cap_ng="yes"
1197   ;;
1198   --disable-tcg) tcg="no"
1199   ;;
1200   --enable-tcg) tcg="yes"
1201   ;;
1202   --disable-malloc-trim) malloc_trim="no"
1203   ;;
1204   --enable-malloc-trim) malloc_trim="yes"
1205   ;;
1206   --disable-spice) spice="no"
1207   ;;
1208   --enable-spice) spice="yes"
1209   ;;
1210   --disable-libiscsi) libiscsi="no"
1211   ;;
1212   --enable-libiscsi) libiscsi="yes"
1213   ;;
1214   --disable-libnfs) libnfs="no"
1215   ;;
1216   --enable-libnfs) libnfs="yes"
1217   ;;
1218   --enable-profiler) profiler="yes"
1219   ;;
1220   --disable-cocoa) cocoa="no"
1221   ;;
1222   --enable-cocoa)
1223       cocoa="yes" ;
1224       audio_drv_list="coreaudio $(echo $audio_drv_list | sed s,coreaudio,,g)"
1225   ;;
1226   --disable-system) softmmu="no"
1227   ;;
1228   --enable-system) softmmu="yes"
1229   ;;
1230   --disable-user)
1231       linux_user="no" ;
1232       bsd_user="no" ;
1233   ;;
1234   --enable-user) ;;
1235   --disable-linux-user) linux_user="no"
1236   ;;
1237   --enable-linux-user) linux_user="yes"
1238   ;;
1239   --disable-bsd-user) bsd_user="no"
1240   ;;
1241   --enable-bsd-user) bsd_user="yes"
1242   ;;
1243   --enable-pie) pie="yes"
1244   ;;
1245   --disable-pie) pie="no"
1246   ;;
1247   --enable-werror) werror="yes"
1248   ;;
1249   --disable-werror) werror="no"
1250   ;;
1251   --enable-stack-protector) stack_protector="yes"
1252   ;;
1253   --disable-stack-protector) stack_protector="no"
1254   ;;
1255   --disable-curses) curses="no"
1256   ;;
1257   --enable-curses) curses="yes"
1258   ;;
1259   --disable-iconv) iconv="no"
1260   ;;
1261   --enable-iconv) iconv="yes"
1262   ;;
1263   --disable-curl) curl="no"
1264   ;;
1265   --enable-curl) curl="yes"
1266   ;;
1267   --disable-fdt) fdt="no"
1268   ;;
1269   --enable-fdt) fdt="yes"
1270   ;;
1271   --disable-linux-aio) linux_aio="no"
1272   ;;
1273   --enable-linux-aio) linux_aio="yes"
1274   ;;
1275   --disable-attr) attr="no"
1276   ;;
1277   --enable-attr) attr="yes"
1278   ;;
1279   --disable-membarrier) membarrier="no"
1280   ;;
1281   --enable-membarrier) membarrier="yes"
1282   ;;
1283   --disable-blobs) blobs="no"
1284   ;;
1285   --with-pkgversion=*) pkgversion="$optarg"
1286   ;;
1287   --with-coroutine=*) coroutine="$optarg"
1288   ;;
1289   --disable-coroutine-pool) coroutine_pool="no"
1290   ;;
1291   --enable-coroutine-pool) coroutine_pool="yes"
1292   ;;
1293   --enable-debug-stack-usage) debug_stack_usage="yes"
1294   ;;
1295   --enable-crypto-afalg) crypto_afalg="yes"
1296   ;;
1297   --disable-crypto-afalg) crypto_afalg="no"
1298   ;;
1299   --disable-docs) docs="no"
1300   ;;
1301   --enable-docs) docs="yes"
1302   ;;
1303   --disable-vhost-net) vhost_net="no"
1304   ;;
1305   --enable-vhost-net) vhost_net="yes"
1306   ;;
1307   --disable-vhost-crypto) vhost_crypto="no"
1308   ;;
1309   --enable-vhost-crypto) vhost_crypto="yes"
1310   ;;
1311   --disable-vhost-scsi) vhost_scsi="no"
1312   ;;
1313   --enable-vhost-scsi) vhost_scsi="yes"
1314   ;;
1315   --disable-vhost-vsock) vhost_vsock="no"
1316   ;;
1317   --enable-vhost-vsock) vhost_vsock="yes"
1318   ;;
1319   --disable-opengl) opengl="no"
1320   ;;
1321   --enable-opengl) opengl="yes"
1322   ;;
1323   --disable-rbd) rbd="no"
1324   ;;
1325   --enable-rbd) rbd="yes"
1326   ;;
1327   --disable-xfsctl) xfs="no"
1328   ;;
1329   --enable-xfsctl) xfs="yes"
1330   ;;
1331   --disable-smartcard) smartcard="no"
1332   ;;
1333   --enable-smartcard) smartcard="yes"
1334   ;;
1335   --disable-libusb) libusb="no"
1336   ;;
1337   --enable-libusb) libusb="yes"
1338   ;;
1339   --disable-usb-redir) usb_redir="no"
1340   ;;
1341   --enable-usb-redir) usb_redir="yes"
1342   ;;
1343   --disable-zlib-test) zlib="no"
1344   ;;
1345   --disable-lzo) lzo="no"
1346   ;;
1347   --enable-lzo) lzo="yes"
1348   ;;
1349   --disable-snappy) snappy="no"
1350   ;;
1351   --enable-snappy) snappy="yes"
1352   ;;
1353   --disable-bzip2) bzip2="no"
1354   ;;
1355   --enable-bzip2) bzip2="yes"
1356   ;;
1357   --enable-lzfse) lzfse="yes"
1358   ;;
1359   --disable-lzfse) lzfse="no"
1360   ;;
1361   --enable-guest-agent) guest_agent="yes"
1362   ;;
1363   --disable-guest-agent) guest_agent="no"
1364   ;;
1365   --enable-guest-agent-msi) guest_agent_msi="yes"
1366   ;;
1367   --disable-guest-agent-msi) guest_agent_msi="no"
1368   ;;
1369   --with-vss-sdk) vss_win32_sdk=""
1370   ;;
1371   --with-vss-sdk=*) vss_win32_sdk="$optarg"
1372   ;;
1373   --without-vss-sdk) vss_win32_sdk="no"
1374   ;;
1375   --with-win-sdk) win_sdk=""
1376   ;;
1377   --with-win-sdk=*) win_sdk="$optarg"
1378   ;;
1379   --without-win-sdk) win_sdk="no"
1380   ;;
1381   --enable-tools) want_tools="yes"
1382   ;;
1383   --disable-tools) want_tools="no"
1384   ;;
1385   --enable-seccomp) seccomp="yes"
1386   ;;
1387   --disable-seccomp) seccomp="no"
1388   ;;
1389   --disable-glusterfs) glusterfs="no"
1390   ;;
1391   --disable-avx2) avx2_opt="no"
1392   ;;
1393   --enable-avx2) avx2_opt="yes"
1394   ;;
1395   --enable-glusterfs) glusterfs="yes"
1396   ;;
1397   --disable-virtio-blk-data-plane|--enable-virtio-blk-data-plane)
1398       echo "$0: $opt is obsolete, virtio-blk data-plane is always on" >&2
1399   ;;
1400   --enable-vhdx|--disable-vhdx)
1401       echo "$0: $opt is obsolete, VHDX driver is always built" >&2
1402   ;;
1403   --enable-uuid|--disable-uuid)
1404       echo "$0: $opt is obsolete, UUID support is always built" >&2
1405   ;;
1406   --disable-gtk) gtk="no"
1407   ;;
1408   --enable-gtk) gtk="yes"
1409   ;;
1410   --tls-priority=*) tls_priority="$optarg"
1411   ;;
1412   --disable-gnutls) gnutls="no"
1413   ;;
1414   --enable-gnutls) gnutls="yes"
1415   ;;
1416   --disable-nettle) nettle="no"
1417   ;;
1418   --enable-nettle) nettle="yes"
1419   ;;
1420   --disable-gcrypt) gcrypt="no"
1421   ;;
1422   --enable-gcrypt) gcrypt="yes"
1423   ;;
1424   --disable-auth-pam) auth_pam="no"
1425   ;;
1426   --enable-auth-pam) auth_pam="yes"
1427   ;;
1428   --enable-rdma) rdma="yes"
1429   ;;
1430   --disable-rdma) rdma="no"
1431   ;;
1432   --enable-pvrdma) pvrdma="yes"
1433   ;;
1434   --disable-pvrdma) pvrdma="no"
1435   ;;
1436   --disable-vte) vte="no"
1437   ;;
1438   --enable-vte) vte="yes"
1439   ;;
1440   --disable-virglrenderer) virglrenderer="no"
1441   ;;
1442   --enable-virglrenderer) virglrenderer="yes"
1443   ;;
1444   --disable-tpm) tpm="no"
1445   ;;
1446   --enable-tpm) tpm="yes"
1447   ;;
1448   --disable-libssh) libssh="no"
1449   ;;
1450   --enable-libssh) libssh="yes"
1451   ;;
1452   --disable-live-block-migration) live_block_migration="no"
1453   ;;
1454   --enable-live-block-migration) live_block_migration="yes"
1455   ;;
1456   --disable-numa) numa="no"
1457   ;;
1458   --enable-numa) numa="yes"
1459   ;;
1460   --disable-libxml2) libxml2="no"
1461   ;;
1462   --enable-libxml2) libxml2="yes"
1463   ;;
1464   --disable-tcmalloc) tcmalloc="no"
1465   ;;
1466   --enable-tcmalloc) tcmalloc="yes"
1467   ;;
1468   --disable-jemalloc) jemalloc="no"
1469   ;;
1470   --enable-jemalloc) jemalloc="yes"
1471   ;;
1472   --disable-replication) replication="no"
1473   ;;
1474   --enable-replication) replication="yes"
1475   ;;
1476   --disable-vxhs) vxhs="no"
1477   ;;
1478   --enable-vxhs) vxhs="yes"
1479   ;;
1480   --disable-bochs) bochs="no"
1481   ;;
1482   --enable-bochs) bochs="yes"
1483   ;;
1484   --disable-cloop) cloop="no"
1485   ;;
1486   --enable-cloop) cloop="yes"
1487   ;;
1488   --disable-dmg) dmg="no"
1489   ;;
1490   --enable-dmg) dmg="yes"
1491   ;;
1492   --disable-qcow1) qcow1="no"
1493   ;;
1494   --enable-qcow1) qcow1="yes"
1495   ;;
1496   --disable-vdi) vdi="no"
1497   ;;
1498   --enable-vdi) vdi="yes"
1499   ;;
1500   --disable-vvfat) vvfat="no"
1501   ;;
1502   --enable-vvfat) vvfat="yes"
1503   ;;
1504   --disable-qed) qed="no"
1505   ;;
1506   --enable-qed) qed="yes"
1507   ;;
1508   --disable-parallels) parallels="no"
1509   ;;
1510   --enable-parallels) parallels="yes"
1511   ;;
1512   --disable-sheepdog) sheepdog="no"
1513   ;;
1514   --enable-sheepdog) sheepdog="yes"
1515   ;;
1516   --disable-vhost-user) vhost_user="no"
1517   ;;
1518   --enable-vhost-user) vhost_user="yes"
1519   ;;
1520   --disable-vhost-kernel) vhost_kernel="no"
1521   ;;
1522   --enable-vhost-kernel) vhost_kernel="yes"
1523   ;;
1524   --disable-capstone) capstone="no"
1525   ;;
1526   --enable-capstone) capstone="yes"
1527   ;;
1528   --enable-capstone=git) capstone="git"
1529   ;;
1530   --enable-capstone=system) capstone="system"
1531   ;;
1532   --with-git=*) git="$optarg"
1533   ;;
1534   --enable-git-update) git_update=yes
1535   ;;
1536   --disable-git-update) git_update=no
1537   ;;
1538   --enable-debug-mutex) debug_mutex=yes
1539   ;;
1540   --disable-debug-mutex) debug_mutex=no
1541   ;;
1542   --enable-libpmem) libpmem=yes
1543   ;;
1544   --disable-libpmem) libpmem=no
1545   ;;
1546   *)
1547       echo "ERROR: unknown option $opt"
1548       echo "Try '$0 --help' for more information"
1549       exit 1
1550   ;;
1551   esac
1552 done
1553
1554 case "$cpu" in
1555     ppc)
1556            CPU_CFLAGS="-m32"
1557            LDFLAGS="-m32 $LDFLAGS"
1558            cross_cc_ppc=$cc
1559            cross_cc_cflags_ppc="$CPU_CFLAGS"
1560            ;;
1561     ppc64)
1562            CPU_CFLAGS="-m64"
1563            LDFLAGS="-m64 $LDFLAGS"
1564            cross_cc_ppc64=$cc
1565            cross_cc_cflags_ppc64="$CPU_CFLAGS"
1566            ;;
1567     sparc)
1568            CPU_CFLAGS="-m32 -mv8plus -mcpu=ultrasparc"
1569            LDFLAGS="-m32 -mv8plus $LDFLAGS"
1570            cross_cc_sparc=$cc
1571            cross_cc_cflags_sparc="$CPU_CFLAGS"
1572            ;;
1573     sparc64)
1574            CPU_CFLAGS="-m64 -mcpu=ultrasparc"
1575            LDFLAGS="-m64 $LDFLAGS"
1576            cross_cc_sparc64=$cc
1577            cross_cc_cflags_sparc64="$CPU_CFLAGS"
1578            ;;
1579     s390)
1580            CPU_CFLAGS="-m31"
1581            LDFLAGS="-m31 $LDFLAGS"
1582            cross_cc_s390=$cc
1583            cross_cc_cflags_s390="$CPU_CFLAGS"
1584            ;;
1585     s390x)
1586            CPU_CFLAGS="-m64"
1587            LDFLAGS="-m64 $LDFLAGS"
1588            cross_cc_s390x=$cc
1589            cross_cc_cflags_s390x="$CPU_CFLAGS"
1590            ;;
1591     i386)
1592            CPU_CFLAGS="-m32"
1593            LDFLAGS="-m32 $LDFLAGS"
1594            cross_cc_i386=$cc
1595            cross_cc_cflags_i386="$CPU_CFLAGS"
1596            ;;
1597     x86_64)
1598            # ??? Only extremely old AMD cpus do not have cmpxchg16b.
1599            # If we truly care, we should simply detect this case at
1600            # runtime and generate the fallback to serial emulation.
1601            CPU_CFLAGS="-m64 -mcx16"
1602            LDFLAGS="-m64 $LDFLAGS"
1603            cross_cc_x86_64=$cc
1604            cross_cc_cflags_x86_64="$CPU_CFLAGS"
1605            ;;
1606     x32)
1607            CPU_CFLAGS="-mx32"
1608            LDFLAGS="-mx32 $LDFLAGS"
1609            cross_cc_i386=$cc
1610            cross_cc_cflags_i386="$CPU_CFLAGS"
1611            ;;
1612     # No special flags required for other host CPUs
1613 esac
1614
1615 QEMU_CFLAGS="$CPU_CFLAGS $QEMU_CFLAGS"
1616
1617 # For user-mode emulation the host arch has to be one we explicitly
1618 # support, even if we're using TCI.
1619 if [ "$ARCH" = "unknown" ]; then
1620   bsd_user="no"
1621   linux_user="no"
1622 fi
1623
1624 default_target_list=""
1625
1626 mak_wilds=""
1627
1628 if [ "$softmmu" = "yes" ]; then
1629     mak_wilds="${mak_wilds} $source_path/default-configs/*-softmmu.mak"
1630 fi
1631 if [ "$linux_user" = "yes" ]; then
1632     mak_wilds="${mak_wilds} $source_path/default-configs/*-linux-user.mak"
1633 fi
1634 if [ "$bsd_user" = "yes" ]; then
1635     mak_wilds="${mak_wilds} $source_path/default-configs/*-bsd-user.mak"
1636 fi
1637
1638 if test -z "$target_list_exclude"; then
1639     for config in $mak_wilds; do
1640         default_target_list="${default_target_list} $(basename "$config" .mak)"
1641     done
1642 else
1643     exclude_list=$(echo "$target_list_exclude" | sed -e 's/,/ /g')
1644     for config in $mak_wilds; do
1645         target="$(basename "$config" .mak)"
1646         exclude="no"
1647         for excl in $exclude_list; do
1648             if test "$excl" = "$target"; then
1649                 exclude="yes"
1650                 break;
1651             fi
1652         done
1653         if test "$exclude" = "no"; then
1654             default_target_list="${default_target_list} $target"
1655         fi
1656     done
1657 fi
1658
1659 # Enumerate public trace backends for --help output
1660 trace_backend_list=$(echo $(grep -le '^PUBLIC = True$' "$source_path"/scripts/tracetool/backend/*.py | sed -e 's/^.*\/\(.*\)\.py$/\1/'))
1661
1662 if test x"$show_help" = x"yes" ; then
1663 cat << EOF
1664
1665 Usage: configure [options]
1666 Options: [defaults in brackets after descriptions]
1667
1668 Standard options:
1669   --help                   print this message
1670   --prefix=PREFIX          install in PREFIX [$prefix]
1671   --interp-prefix=PREFIX   where to find shared libraries, etc.
1672                            use %M for cpu name [$interp_prefix]
1673   --target-list=LIST       set target list (default: build everything)
1674 $(echo Available targets: $default_target_list | \
1675   fold -s -w 53 | sed -e 's/^/                           /')
1676   --target-list-exclude=LIST exclude a set of targets from the default target-list
1677
1678 Advanced options (experts only):
1679   --cross-prefix=PREFIX    use PREFIX for compile tools [$cross_prefix]
1680   --cc=CC                  use C compiler CC [$cc]
1681   --iasl=IASL              use ACPI compiler IASL [$iasl]
1682   --host-cc=CC             use C compiler CC [$host_cc] for code run at
1683                            build time
1684   --cxx=CXX                use C++ compiler CXX [$cxx]
1685   --objcc=OBJCC            use Objective-C compiler OBJCC [$objcc]
1686   --extra-cflags=CFLAGS    append extra C compiler flags QEMU_CFLAGS
1687   --extra-cxxflags=CXXFLAGS append extra C++ compiler flags QEMU_CXXFLAGS
1688   --extra-ldflags=LDFLAGS  append extra linker flags LDFLAGS
1689   --cross-cc-ARCH=CC       use compiler when building ARCH guest test cases
1690   --cross-cc-flags-ARCH=   use compiler flags when building ARCH guest tests
1691   --make=MAKE              use specified make [$make]
1692   --install=INSTALL        use specified install [$install]
1693   --python=PYTHON          use specified python [$python]
1694   --smbd=SMBD              use specified smbd [$smbd]
1695   --with-git=GIT           use specified git [$git]
1696   --static                 enable static build [$static]
1697   --mandir=PATH            install man pages in PATH
1698   --datadir=PATH           install firmware in PATH$confsuffix
1699   --docdir=PATH            install documentation in PATH$confsuffix
1700   --bindir=PATH            install binaries in PATH
1701   --libdir=PATH            install libraries in PATH
1702   --libexecdir=PATH        install helper binaries in PATH
1703   --sysconfdir=PATH        install config in PATH$confsuffix
1704   --localstatedir=PATH     install local state in PATH (set at runtime on win32)
1705   --firmwarepath=PATH      search PATH for firmware files
1706   --with-confsuffix=SUFFIX suffix for QEMU data inside datadir/libdir/sysconfdir [$confsuffix]
1707   --with-pkgversion=VERS   use specified string as sub-version of the package
1708   --enable-debug           enable common debug build options
1709   --enable-sanitizers      enable default sanitizers
1710   --disable-strip          disable stripping binaries
1711   --disable-werror         disable compilation abort on warning
1712   --disable-stack-protector disable compiler-provided stack protection
1713   --audio-drv-list=LIST    set audio drivers list:
1714                            Available drivers: $audio_possible_drivers
1715   --block-drv-whitelist=L  Same as --block-drv-rw-whitelist=L
1716   --block-drv-rw-whitelist=L
1717                            set block driver read-write whitelist
1718                            (affects only QEMU, not qemu-img)
1719   --block-drv-ro-whitelist=L
1720                            set block driver read-only whitelist
1721                            (affects only QEMU, not qemu-img)
1722   --enable-trace-backends=B Set trace backend
1723                            Available backends: $trace_backend_list
1724   --with-trace-file=NAME   Full PATH,NAME of file to store traces
1725                            Default:trace-<pid>
1726   --disable-slirp          disable SLIRP userspace network connectivity
1727   --enable-tcg-interpreter enable TCG with bytecode interpreter (TCI)
1728   --enable-malloc-trim     enable libc malloc_trim() for memory optimization
1729   --oss-lib                path to OSS library
1730   --cpu=CPU                Build for host CPU [$cpu]
1731   --with-coroutine=BACKEND coroutine backend. Supported options:
1732                            ucontext, sigaltstack, windows
1733   --enable-gcov            enable test coverage analysis with gcov
1734   --gcov=GCOV              use specified gcov [$gcov_tool]
1735   --disable-blobs          disable installing provided firmware blobs
1736   --with-vss-sdk=SDK-path  enable Windows VSS support in QEMU Guest Agent
1737   --with-win-sdk=SDK-path  path to Windows Platform SDK (to build VSS .tlb)
1738   --tls-priority           default TLS protocol/cipher priority string
1739   --enable-gprof           QEMU profiling with gprof
1740   --enable-profiler        profiler support
1741   --enable-debug-stack-usage
1742                            track the maximum stack usage of stacks created by qemu_alloc_stack
1743
1744 Optional features, enabled with --enable-FEATURE and
1745 disabled with --disable-FEATURE, default is enabled if available:
1746
1747   system          all system emulation targets
1748   user            supported user emulation targets
1749   linux-user      all linux usermode emulation targets
1750   bsd-user        all BSD usermode emulation targets
1751   docs            build documentation
1752   guest-agent     build the QEMU Guest Agent
1753   guest-agent-msi build guest agent Windows MSI installation package
1754   pie             Position Independent Executables
1755   modules         modules support (non-Windows)
1756   debug-tcg       TCG debugging (default is disabled)
1757   debug-info      debugging information
1758   sparse          sparse checker
1759
1760   gnutls          GNUTLS cryptography support
1761   nettle          nettle cryptography support
1762   gcrypt          libgcrypt cryptography support
1763   auth-pam        PAM access control
1764   sdl             SDL UI
1765   sdl-image       SDL Image support for icons
1766   gtk             gtk UI
1767   vte             vte support for the gtk UI
1768   curses          curses UI
1769   iconv           font glyph conversion support
1770   vnc             VNC UI support
1771   vnc-sasl        SASL encryption for VNC server
1772   vnc-jpeg        JPEG lossy compression for VNC server
1773   vnc-png         PNG compression for VNC server
1774   cocoa           Cocoa UI (Mac OS X only)
1775   virtfs          VirtFS
1776   mpath           Multipath persistent reservation passthrough
1777   xen             xen backend driver support
1778   xen-pci-passthrough    PCI passthrough support for Xen
1779   brlapi          BrlAPI (Braile)
1780   curl            curl connectivity
1781   membarrier      membarrier system call (for Linux 4.14+ or Windows)
1782   fdt             fdt device tree
1783   bluez           bluez stack connectivity
1784   kvm             KVM acceleration support
1785   hax             HAX acceleration support
1786   hvf             Hypervisor.framework acceleration support
1787   whpx            Windows Hypervisor Platform acceleration support
1788   rdma            Enable RDMA-based migration
1789   pvrdma          Enable PVRDMA support
1790   vde             support for vde network
1791   netmap          support for netmap network
1792   linux-aio       Linux AIO support
1793   cap-ng          libcap-ng support
1794   attr            attr and xattr support
1795   vhost-net       vhost-net kernel acceleration support
1796   vhost-vsock     virtio sockets device support
1797   vhost-scsi      vhost-scsi kernel target support
1798   vhost-crypto    vhost-user-crypto backend support
1799   vhost-kernel    vhost kernel backend support
1800   vhost-user      vhost-user backend support
1801   spice           spice
1802   rbd             rados block device (rbd)
1803   libiscsi        iscsi support
1804   libnfs          nfs support
1805   smartcard       smartcard support (libcacard)
1806   libusb          libusb (for usb passthrough)
1807   live-block-migration   Block migration in the main migration stream
1808   usb-redir       usb network redirection support
1809   lzo             support of lzo compression library
1810   snappy          support of snappy compression library
1811   bzip2           support of bzip2 compression library
1812                   (for reading bzip2-compressed dmg images)
1813   lzfse           support of lzfse compression library
1814                   (for reading lzfse-compressed dmg images)
1815   seccomp         seccomp support
1816   coroutine-pool  coroutine freelist (better performance)
1817   glusterfs       GlusterFS backend
1818   tpm             TPM support
1819   libssh          ssh block device support
1820   numa            libnuma support
1821   libxml2         for Parallels image format
1822   tcmalloc        tcmalloc support
1823   jemalloc        jemalloc support
1824   avx2            AVX2 optimization support
1825   replication     replication support
1826   opengl          opengl support
1827   virglrenderer   virgl rendering support
1828   xfsctl          xfsctl support
1829   qom-cast-debug  cast debugging support
1830   tools           build qemu-io, qemu-nbd and qemu-img tools
1831   vxhs            Veritas HyperScale vDisk backend support
1832   bochs           bochs image format support
1833   cloop           cloop image format support
1834   dmg             dmg image format support
1835   qcow1           qcow v1 image format support
1836   vdi             vdi image format support
1837   vvfat           vvfat image format support
1838   qed             qed image format support
1839   parallels       parallels image format support
1840   sheepdog        sheepdog block driver support
1841   crypto-afalg    Linux AF_ALG crypto backend driver
1842   capstone        capstone disassembler support
1843   debug-mutex     mutex debugging support
1844   libpmem         libpmem support
1845
1846 NOTE: The object files are built at the place where configure is launched
1847 EOF
1848 exit 0
1849 fi
1850
1851 # Remove old dependency files to make sure that they get properly regenerated
1852 rm -f */config-devices.mak.d
1853
1854 if test -z "$python"
1855 then
1856     error_exit "Python not found. Use --python=/path/to/python"
1857 fi
1858
1859 # Note that if the Python conditional here evaluates True we will exit
1860 # with status 1 which is a shell 'false' value.
1861 if ! $python -c 'import sys; sys.exit(sys.version_info < (2,7))'; then
1862   error_exit "Cannot use '$python', Python 2 >= 2.7 or Python 3 is required." \
1863       "Use --python=/path/to/python to specify a supported Python."
1864 fi
1865
1866 # Preserve python version since some functionality is dependent on it
1867 python_version=$($python -V 2>&1 | sed -e 's/Python\ //')
1868
1869 # Suppress writing compiled files
1870 python="$python -B"
1871
1872 # Check that the C compiler works. Doing this here before testing
1873 # the host CPU ensures that we had a valid CC to autodetect the
1874 # $cpu var (and we should bail right here if that's not the case).
1875 # It also allows the help message to be printed without a CC.
1876 write_c_skeleton;
1877 if compile_object ; then
1878   : C compiler works ok
1879 else
1880     error_exit "\"$cc\" either does not exist or does not work"
1881 fi
1882 if ! compile_prog ; then
1883     error_exit "\"$cc\" cannot build an executable (is your linker broken?)"
1884 fi
1885
1886 # Now we have handled --enable-tcg-interpreter and know we're not just
1887 # printing the help message, bail out if the host CPU isn't supported.
1888 if test "$ARCH" = "unknown"; then
1889     if test "$tcg_interpreter" = "yes" ; then
1890         echo "Unsupported CPU = $cpu, will use TCG with TCI (experimental)"
1891     else
1892         error_exit "Unsupported CPU = $cpu, try --enable-tcg-interpreter"
1893     fi
1894 fi
1895
1896 # Consult white-list to determine whether to enable werror
1897 # by default.  Only enable by default for git builds
1898 if test -z "$werror" ; then
1899     if test -e "$source_path/.git" && \
1900         { test "$linux" = "yes" || test "$mingw32" = "yes"; }; then
1901         werror="yes"
1902     else
1903         werror="no"
1904     fi
1905 fi
1906
1907 if test "$bogus_os" = "yes"; then
1908     # Now that we know that we're not printing the help and that
1909     # the compiler works (so the results of the check_defines we used
1910     # to identify the OS are reliable), if we didn't recognize the
1911     # host OS we should stop now.
1912     error_exit "Unrecognized host OS (uname -s reports '$(uname -s)')"
1913 fi
1914
1915 # Check whether the compiler matches our minimum requirements:
1916 cat > $TMPC << EOF
1917 #if defined(__clang_major__) && defined(__clang_minor__)
1918 # ifdef __apple_build_version__
1919 #  if __clang_major__ < 5 || (__clang_major__ == 5 && __clang_minor__ < 1)
1920 #   error You need at least XCode Clang v5.1 to compile QEMU
1921 #  endif
1922 # else
1923 #  if __clang_major__ < 3 || (__clang_major__ == 3 && __clang_minor__ < 4)
1924 #   error You need at least Clang v3.4 to compile QEMU
1925 #  endif
1926 # endif
1927 #elif defined(__GNUC__) && defined(__GNUC_MINOR__)
1928 # if __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 8)
1929 #  error You need at least GCC v4.8 to compile QEMU
1930 # endif
1931 #else
1932 # error You either need GCC or Clang to compiler QEMU
1933 #endif
1934 int main (void) { return 0; }
1935 EOF
1936 if ! compile_prog "" "" ; then
1937     error_exit "You need at least GCC v4.8 or Clang v3.4 (or XCode Clang v5.1)"
1938 fi
1939
1940 gcc_flags="-Wold-style-declaration -Wold-style-definition -Wtype-limits"
1941 gcc_flags="-Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers $gcc_flags"
1942 gcc_flags="-Wno-missing-include-dirs -Wempty-body -Wnested-externs $gcc_flags"
1943 gcc_flags="-Wendif-labels -Wno-shift-negative-value $gcc_flags"
1944 gcc_flags="-Wno-initializer-overrides -Wexpansion-to-defined $gcc_flags"
1945 gcc_flags="-Wno-string-plus-int -Wno-typedef-redefinition $gcc_flags"
1946 # Note that we do not add -Werror to gcc_flags here, because that would
1947 # enable it for all configure tests. If a configure test failed due
1948 # to -Werror this would just silently disable some features,
1949 # so it's too error prone.
1950
1951 cc_has_warning_flag() {
1952     write_c_skeleton;
1953
1954     # Use the positive sense of the flag when testing for -Wno-wombat
1955     # support (gcc will happily accept the -Wno- form of unknown
1956     # warning options).
1957     optflag="$(echo $1 | sed -e 's/^-Wno-/-W/')"
1958     compile_prog "-Werror $optflag" ""
1959 }
1960
1961 for flag in $gcc_flags; do
1962     if cc_has_warning_flag $flag ; then
1963         QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1964     fi
1965 done
1966
1967 if test "$stack_protector" != "no"; then
1968   cat > $TMPC << EOF
1969 int main(int argc, char *argv[])
1970 {
1971     char arr[64], *p = arr, *c = argv[0];
1972     while (*c) {
1973         *p++ = *c++;
1974     }
1975     return 0;
1976 }
1977 EOF
1978   gcc_flags="-fstack-protector-strong -fstack-protector-all"
1979   sp_on=0
1980   for flag in $gcc_flags; do
1981     # We need to check both a compile and a link, since some compiler
1982     # setups fail only on a .c->.o compile and some only at link time
1983     if do_cc $QEMU_CFLAGS -Werror $flag -c -o $TMPO $TMPC &&
1984        compile_prog "-Werror $flag" ""; then
1985       QEMU_CFLAGS="$QEMU_CFLAGS $flag"
1986       sp_on=1
1987       break
1988     fi
1989   done
1990   if test "$stack_protector" = yes; then
1991     if test $sp_on = 0; then
1992       error_exit "Stack protector not supported"
1993     fi
1994   fi
1995 fi
1996
1997 # Disable -Wmissing-braces on older compilers that warn even for
1998 # the "universal" C zero initializer {0}.
1999 cat > $TMPC << EOF
2000 struct {
2001   int a[2];
2002 } x = {0};
2003 EOF
2004 if compile_object "-Werror" "" ; then
2005   :
2006 else
2007   QEMU_CFLAGS="$QEMU_CFLAGS -Wno-missing-braces"
2008 fi
2009
2010 # Our module code doesn't support Windows
2011 if test "$modules" = "yes" && test "$mingw32" = "yes" ; then
2012   error_exit "Modules are not available for Windows"
2013 fi
2014
2015 # Static linking is not possible with modules or PIE
2016 if test "$static" = "yes" ; then
2017   if test "$modules" = "yes" ; then
2018     error_exit "static and modules are mutually incompatible"
2019   fi
2020   if test "$pie" = "yes" ; then
2021     error_exit "static and pie are mutually incompatible"
2022   else
2023     pie="no"
2024   fi
2025 fi
2026
2027 # Unconditional check for compiler __thread support
2028   cat > $TMPC << EOF
2029 static __thread int tls_var;
2030 int main(void) { return tls_var; }
2031 EOF
2032
2033 if ! compile_prog "-Werror" "" ; then
2034     error_exit "Your compiler does not support the __thread specifier for " \
2035         "Thread-Local Storage (TLS). Please upgrade to a version that does."
2036 fi
2037
2038 if test "$pie" = ""; then
2039   case "$cpu-$targetos" in
2040     i386-Linux|x86_64-Linux|x32-Linux|i386-OpenBSD|x86_64-OpenBSD)
2041       ;;
2042     *)
2043       pie="no"
2044       ;;
2045   esac
2046 fi
2047
2048 if test "$pie" != "no" ; then
2049   cat > $TMPC << EOF
2050
2051 #ifdef __linux__
2052 #  define THREAD __thread
2053 #else
2054 #  define THREAD
2055 #endif
2056
2057 static THREAD int tls_var;
2058
2059 int main(void) { return tls_var; }
2060
2061 EOF
2062   if compile_prog "-fPIE -DPIE" "-pie"; then
2063     QEMU_CFLAGS="-fPIE -DPIE $QEMU_CFLAGS"
2064     LDFLAGS="-pie $LDFLAGS"
2065     pie="yes"
2066     if compile_prog "" "-Wl,-z,relro -Wl,-z,now" ; then
2067       LDFLAGS="-Wl,-z,relro -Wl,-z,now $LDFLAGS"
2068     fi
2069   else
2070     if test "$pie" = "yes"; then
2071       error_exit "PIE not available due to missing toolchain support"
2072     else
2073       echo "Disabling PIE due to missing toolchain support"
2074       pie="no"
2075     fi
2076   fi
2077
2078   if compile_prog "-Werror -fno-pie" "-nopie"; then
2079     CFLAGS_NOPIE="-fno-pie"
2080     LDFLAGS_NOPIE="-nopie"
2081   fi
2082 fi
2083
2084 ##########################################
2085 # __sync_fetch_and_and requires at least -march=i486. Many toolchains
2086 # use i686 as default anyway, but for those that don't, an explicit
2087 # specification is necessary
2088
2089 if test "$cpu" = "i386"; then
2090   cat > $TMPC << EOF
2091 static int sfaa(int *ptr)
2092 {
2093   return __sync_fetch_and_and(ptr, 0);
2094 }
2095
2096 int main(void)
2097 {
2098   int val = 42;
2099   val = __sync_val_compare_and_swap(&val, 0, 1);
2100   sfaa(&val);
2101   return val;
2102 }
2103 EOF
2104   if ! compile_prog "" "" ; then
2105     QEMU_CFLAGS="-march=i486 $QEMU_CFLAGS"
2106   fi
2107 fi
2108
2109 #########################################
2110 # Solaris specific configure tool chain decisions
2111
2112 if test "$solaris" = "yes" ; then
2113   if has $install; then
2114     :
2115   else
2116     error_exit "Solaris install program not found. Use --install=/usr/ucb/install or" \
2117         "install fileutils from www.blastwave.org using pkg-get -i fileutils" \
2118         "to get ginstall which is used by default (which lives in /opt/csw/bin)"
2119   fi
2120   if test "$(path_of $install)" = "/usr/sbin/install" ; then
2121     error_exit "Solaris /usr/sbin/install is not an appropriate install program." \
2122         "try ginstall from the GNU fileutils available from www.blastwave.org" \
2123         "using pkg-get -i fileutils, or use --install=/usr/ucb/install"
2124   fi
2125   if has ar; then
2126     :
2127   else
2128     if test -f /usr/ccs/bin/ar ; then
2129       error_exit "No path includes ar" \
2130           "Add /usr/ccs/bin to your path and rerun configure"
2131     fi
2132     error_exit "No path includes ar"
2133   fi
2134 fi
2135
2136 if test -z "${target_list+xxx}" ; then
2137     for target in $default_target_list; do
2138         supported_target $target 2>/dev/null && \
2139             target_list="$target_list $target"
2140     done
2141     target_list="${target_list# }"
2142 else
2143     target_list=$(echo "$target_list" | sed -e 's/,/ /g')
2144     for target in $target_list; do
2145         # Check that we recognised the target name; this allows a more
2146         # friendly error message than if we let it fall through.
2147         case " $default_target_list " in
2148             *" $target "*)
2149                 ;;
2150             *)
2151                 error_exit "Unknown target name '$target'"
2152                 ;;
2153         esac
2154         supported_target $target || exit 1
2155     done
2156 fi
2157
2158 # see if system emulation was really requested
2159 case " $target_list " in
2160   *"-softmmu "*) softmmu=yes
2161   ;;
2162   *) softmmu=no
2163   ;;
2164 esac
2165
2166 feature_not_found() {
2167   feature=$1
2168   remedy=$2
2169
2170   error_exit "User requested feature $feature" \
2171       "configure was not able to find it." \
2172       "$remedy"
2173 }
2174
2175 # ---
2176 # big/little endian test
2177 cat > $TMPC << EOF
2178 short big_endian[] = { 0x4269, 0x4765, 0x4e64, 0x4961, 0x4e00, 0, };
2179 short little_endian[] = { 0x694c, 0x7454, 0x654c, 0x6e45, 0x6944, 0x6e41, 0, };
2180 extern int foo(short *, short *);
2181 int main(int argc, char *argv[]) {
2182     return foo(big_endian, little_endian);
2183 }
2184 EOF
2185
2186 if compile_object ; then
2187     if strings -a $TMPO | grep -q BiGeNdIaN ; then
2188         bigendian="yes"
2189     elif strings -a $TMPO | grep -q LiTtLeEnDiAn ; then
2190         bigendian="no"
2191     else
2192         echo big/little test failed
2193     fi
2194 else
2195     echo big/little test failed
2196 fi
2197
2198 ##########################################
2199 # cocoa implies not SDL or GTK
2200 # (the cocoa UI code currently assumes it is always the active UI
2201 # and doesn't interact well with other UI frontend code)
2202 if test "$cocoa" = "yes"; then
2203     if test "$sdl" = "yes"; then
2204         error_exit "Cocoa and SDL UIs cannot both be enabled at once"
2205     fi
2206     if test "$gtk" = "yes"; then
2207         error_exit "Cocoa and GTK UIs cannot both be enabled at once"
2208     fi
2209     gtk=no
2210     sdl=no
2211 fi
2212
2213 # Some versions of Mac OS X incorrectly define SIZE_MAX
2214 cat > $TMPC << EOF
2215 #include <stdint.h>
2216 #include <stdio.h>
2217 int main(int argc, char *argv[]) {
2218     return printf("%zu", SIZE_MAX);
2219 }
2220 EOF
2221 have_broken_size_max=no
2222 if ! compile_object -Werror ; then
2223     have_broken_size_max=yes
2224 fi
2225
2226 ##########################################
2227 # L2TPV3 probe
2228
2229 cat > $TMPC <<EOF
2230 #include <sys/socket.h>
2231 #include <linux/ip.h>
2232 int main(void) { return sizeof(struct mmsghdr); }
2233 EOF
2234 if compile_prog "" "" ; then
2235   l2tpv3=yes
2236 else
2237   l2tpv3=no
2238 fi
2239
2240 #########################################
2241 # vhost interdependencies and host support
2242
2243 # vhost backends
2244 test "$vhost_user" = "" && vhost_user=yes
2245 if test "$vhost_user" = "yes" && test "$mingw32" = "yes"; then
2246   error_exit "vhost-user isn't available on win32"
2247 fi
2248 test "$vhost_kernel" = "" && vhost_kernel=$linux
2249 if test "$vhost_kernel" = "yes" && test "$linux" != "yes"; then
2250   error_exit "vhost-kernel is only available on Linux"
2251 fi
2252
2253 # vhost-kernel devices
2254 test "$vhost_scsi" = "" && vhost_scsi=$vhost_kernel
2255 if test "$vhost_scsi" = "yes" && test "$vhost_kernel" != "yes"; then
2256   error_exit "--enable-vhost-scsi requires --enable-vhost-kernel"
2257 fi
2258 test "$vhost_vsock" = "" && vhost_vsock=$vhost_kernel
2259 if test "$vhost_vsock" = "yes" && test "$vhost_kernel" != "yes"; then
2260   error_exit "--enable-vhost-vsock requires --enable-vhost-kernel"
2261 fi
2262
2263 # vhost-user backends
2264 test "$vhost_net_user" = "" && vhost_net_user=$vhost_user
2265 if test "$vhost_net_user" = "yes" && test "$vhost_user" = "no"; then
2266   error_exit "--enable-vhost-net-user requires --enable-vhost-user"
2267 fi
2268 test "$vhost_crypto" = "" && vhost_crypto=$vhost_user
2269 if test "$vhost_crypto" = "yes" && test "$vhost_user" = "no"; then
2270   error_exit "--enable-vhost-crypto requires --enable-vhost-user"
2271 fi
2272
2273 # OR the vhost-kernel and vhost-user values for simplicity
2274 if test "$vhost_net" = ""; then
2275   test "$vhost_net_user" = "yes" && vhost_net=yes
2276   test "$vhost_kernel" = "yes" && vhost_net=yes
2277 fi
2278
2279 ##########################################
2280 # MinGW / Mingw-w64 localtime_r/gmtime_r check
2281
2282 if test "$mingw32" = "yes"; then
2283     # Some versions of MinGW / Mingw-w64 lack localtime_r
2284     # and gmtime_r entirely.
2285     #
2286     # Some versions of Mingw-w64 define a macro for
2287     # localtime_r/gmtime_r.
2288     #
2289     # Some versions of Mingw-w64 will define functions
2290     # for localtime_r/gmtime_r, but only if you have
2291     # _POSIX_THREAD_SAFE_FUNCTIONS defined. For fun
2292     # though, unistd.h and pthread.h both define
2293     # that for you.
2294     #
2295     # So this #undef localtime_r and #include <unistd.h>
2296     # are not in fact redundant.
2297 cat > $TMPC << EOF
2298 #include <unistd.h>
2299 #include <time.h>
2300 #undef localtime_r
2301 int main(void) { localtime_r(NULL, NULL); return 0; }
2302 EOF
2303     if compile_prog "" "" ; then
2304         localtime_r="yes"
2305     else
2306         localtime_r="no"
2307     fi
2308 fi
2309
2310 ##########################################
2311 # pkg-config probe
2312
2313 if ! has "$pkg_config_exe"; then
2314   error_exit "pkg-config binary '$pkg_config_exe' not found"
2315 fi
2316
2317 ##########################################
2318 # NPTL probe
2319
2320 if test "$linux_user" = "yes"; then
2321   cat > $TMPC <<EOF
2322 #include <sched.h>
2323 #include <linux/futex.h>
2324 int main(void) {
2325 #if !defined(CLONE_SETTLS) || !defined(FUTEX_WAIT)
2326 #error bork
2327 #endif
2328   return 0;
2329 }
2330 EOF
2331   if ! compile_object ; then
2332     feature_not_found "nptl" "Install glibc and linux kernel headers."
2333   fi
2334 fi
2335
2336 ##########################################
2337 # lzo check
2338
2339 if test "$lzo" != "no" ; then
2340     cat > $TMPC << EOF
2341 #include <lzo/lzo1x.h>
2342 int main(void) { lzo_version(); return 0; }
2343 EOF
2344     if compile_prog "" "-llzo2" ; then
2345         libs_softmmu="$libs_softmmu -llzo2"
2346         lzo="yes"
2347     else
2348         if test "$lzo" = "yes"; then
2349             feature_not_found "liblzo2" "Install liblzo2 devel"
2350         fi
2351         lzo="no"
2352     fi
2353 fi
2354
2355 ##########################################
2356 # snappy check
2357
2358 if test "$snappy" != "no" ; then
2359     cat > $TMPC << EOF
2360 #include <snappy-c.h>
2361 int main(void) { snappy_max_compressed_length(4096); return 0; }
2362 EOF
2363     if compile_prog "" "-lsnappy" ; then
2364         libs_softmmu="$libs_softmmu -lsnappy"
2365         snappy="yes"
2366     else
2367         if test "$snappy" = "yes"; then
2368             feature_not_found "libsnappy" "Install libsnappy devel"
2369         fi
2370         snappy="no"
2371     fi
2372 fi
2373
2374 ##########################################
2375 # bzip2 check
2376
2377 if test "$bzip2" != "no" ; then
2378     cat > $TMPC << EOF
2379 #include <bzlib.h>
2380 int main(void) { BZ2_bzlibVersion(); return 0; }
2381 EOF
2382     if compile_prog "" "-lbz2" ; then
2383         bzip2="yes"
2384     else
2385         if test "$bzip2" = "yes"; then
2386             feature_not_found "libbzip2" "Install libbzip2 devel"
2387         fi
2388         bzip2="no"
2389     fi
2390 fi
2391
2392 ##########################################
2393 # lzfse check
2394
2395 if test "$lzfse" != "no" ; then
2396     cat > $TMPC << EOF
2397 #include <lzfse.h>
2398 int main(void) { lzfse_decode_scratch_size(); return 0; }
2399 EOF
2400     if compile_prog "" "-llzfse" ; then
2401         lzfse="yes"
2402     else
2403         if test "$lzfse" = "yes"; then
2404             feature_not_found "lzfse" "Install lzfse devel"
2405         fi
2406         lzfse="no"
2407     fi
2408 fi
2409
2410 ##########################################
2411 # libseccomp check
2412
2413 if test "$seccomp" != "no" ; then
2414     libseccomp_minver="2.3.0"
2415     if $pkg_config --atleast-version=$libseccomp_minver libseccomp ; then
2416         seccomp_cflags="$($pkg_config --cflags libseccomp)"
2417         seccomp_libs="$($pkg_config --libs libseccomp)"
2418         seccomp="yes"
2419     else
2420         if test "$seccomp" = "yes" ; then
2421             feature_not_found "libseccomp" \
2422                  "Install libseccomp devel >= $libseccomp_minver"
2423         fi
2424         seccomp="no"
2425     fi
2426 fi
2427 ##########################################
2428 # xen probe
2429
2430 if test "$xen" != "no" ; then
2431   # Check whether Xen library path is specified via --extra-ldflags to avoid
2432   # overriding this setting with pkg-config output. If not, try pkg-config
2433   # to obtain all needed flags.
2434
2435   if ! echo $EXTRA_LDFLAGS | grep tools/libxc > /dev/null && \
2436      $pkg_config --exists xencontrol ; then
2437     xen_ctrl_version="$(printf '%d%02d%02d' \
2438       $($pkg_config --modversion xencontrol | sed 's/\./ /g') )"
2439     xen=yes
2440     xen_pc="xencontrol xenstore xenguest xenforeignmemory xengnttab"
2441     xen_pc="$xen_pc xenevtchn xendevicemodel"
2442     if $pkg_config --exists xentoolcore; then
2443       xen_pc="$xen_pc xentoolcore"
2444     fi
2445     QEMU_CFLAGS="$QEMU_CFLAGS $($pkg_config --cflags $xen_pc)"
2446     libs_softmmu="$($pkg_config --libs $xen_pc) $libs_softmmu"
2447   else
2448
2449     xen_libs="-lxenstore -lxenctrl -lxenguest"
2450     xen_stable_libs="-lxenforeignmemory -lxengnttab -lxenevtchn"
2451
2452     # First we test whether Xen headers and libraries are available.
2453     # If no, we are done and there is no Xen support.
2454     # If yes, more tests are run to detect the Xen version.
2455
2456     # Xen (any)
2457     cat > $TMPC <<EOF
2458 #include <xenctrl.h>
2459 int main(void) {
2460   return 0;
2461 }
2462 EOF
2463     if ! compile_prog "" "$xen_libs" ; then
2464       # Xen not found
2465       if test "$xen" = "yes" ; then
2466         feature_not_found "xen" "Install xen devel"
2467       fi
2468       xen=no
2469
2470     # Xen unstable
2471     elif
2472         cat > $TMPC <<EOF &&
2473 #undef XC_WANT_COMPAT_DEVICEMODEL_API
2474 #define __XEN_TOOLS__
2475 #include <xendevicemodel.h>
2476 #include <xenforeignmemory.h>
2477 int main(void) {
2478   xendevicemodel_handle *xd;
2479   xenforeignmemory_handle *xfmem;
2480
2481   xd = xendevicemodel_open(0, 0);
2482   xendevicemodel_pin_memory_cacheattr(xd, 0, 0, 0, 0);
2483
2484   xfmem = xenforeignmemory_open(0, 0);
2485   xenforeignmemory_map_resource(xfmem, 0, 0, 0, 0, 0, NULL, 0, 0);
2486
2487   return 0;
2488 }
2489 EOF
2490         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs -lxentoolcore"
2491       then
2492       xen_stable_libs="-lxendevicemodel $xen_stable_libs -lxentoolcore"
2493       xen_ctrl_version=41100
2494       xen=yes
2495     elif
2496         cat > $TMPC <<EOF &&
2497 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
2498 #include <xenforeignmemory.h>
2499 #include <xentoolcore.h>
2500 int main(void) {
2501   xenforeignmemory_handle *xfmem;
2502
2503   xfmem = xenforeignmemory_open(0, 0);
2504   xenforeignmemory_map2(xfmem, 0, 0, 0, 0, 0, 0, 0);
2505   xentoolcore_restrict_all(0);
2506
2507   return 0;
2508 }
2509 EOF
2510         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs -lxentoolcore"
2511       then
2512       xen_stable_libs="-lxendevicemodel $xen_stable_libs -lxentoolcore"
2513       xen_ctrl_version=41000
2514       xen=yes
2515     elif
2516         cat > $TMPC <<EOF &&
2517 #undef XC_WANT_COMPAT_DEVICEMODEL_API
2518 #define __XEN_TOOLS__
2519 #include <xendevicemodel.h>
2520 int main(void) {
2521   xendevicemodel_handle *xd;
2522
2523   xd = xendevicemodel_open(0, 0);
2524   xendevicemodel_close(xd);
2525
2526   return 0;
2527 }
2528 EOF
2529         compile_prog "" "$xen_libs -lxendevicemodel $xen_stable_libs"
2530       then
2531       xen_stable_libs="-lxendevicemodel $xen_stable_libs"
2532       xen_ctrl_version=40900
2533       xen=yes
2534     elif
2535         cat > $TMPC <<EOF &&
2536 /*
2537  * If we have stable libs the we don't want the libxc compat
2538  * layers, regardless of what CFLAGS we may have been given.
2539  *
2540  * Also, check if xengnttab_grant_copy_segment_t is defined and
2541  * grant copy operation is implemented.
2542  */
2543 #undef XC_WANT_COMPAT_EVTCHN_API
2544 #undef XC_WANT_COMPAT_GNTTAB_API
2545 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
2546 #include <xenctrl.h>
2547 #include <xenstore.h>
2548 #include <xenevtchn.h>
2549 #include <xengnttab.h>
2550 #include <xenforeignmemory.h>
2551 #include <stdint.h>
2552 #include <xen/hvm/hvm_info_table.h>
2553 #if !defined(HVM_MAX_VCPUS)
2554 # error HVM_MAX_VCPUS not defined
2555 #endif
2556 int main(void) {
2557   xc_interface *xc = NULL;
2558   xenforeignmemory_handle *xfmem;
2559   xenevtchn_handle *xe;
2560   xengnttab_handle *xg;
2561   xengnttab_grant_copy_segment_t* seg = NULL;
2562
2563   xs_daemon_open();
2564
2565   xc = xc_interface_open(0, 0, 0);
2566   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2567   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2568   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2569   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
2570
2571   xfmem = xenforeignmemory_open(0, 0);
2572   xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);
2573
2574   xe = xenevtchn_open(0, 0);
2575   xenevtchn_fd(xe);
2576
2577   xg = xengnttab_open(0, 0);
2578   xengnttab_grant_copy(xg, 0, seg);
2579
2580   return 0;
2581 }
2582 EOF
2583         compile_prog "" "$xen_libs $xen_stable_libs"
2584       then
2585       xen_ctrl_version=40800
2586       xen=yes
2587     elif
2588         cat > $TMPC <<EOF &&
2589 /*
2590  * If we have stable libs the we don't want the libxc compat
2591  * layers, regardless of what CFLAGS we may have been given.
2592  */
2593 #undef XC_WANT_COMPAT_EVTCHN_API
2594 #undef XC_WANT_COMPAT_GNTTAB_API
2595 #undef XC_WANT_COMPAT_MAP_FOREIGN_API
2596 #include <xenctrl.h>
2597 #include <xenstore.h>
2598 #include <xenevtchn.h>
2599 #include <xengnttab.h>
2600 #include <xenforeignmemory.h>
2601 #include <stdint.h>
2602 #include <xen/hvm/hvm_info_table.h>
2603 #if !defined(HVM_MAX_VCPUS)
2604 # error HVM_MAX_VCPUS not defined
2605 #endif
2606 int main(void) {
2607   xc_interface *xc = NULL;
2608   xenforeignmemory_handle *xfmem;
2609   xenevtchn_handle *xe;
2610   xengnttab_handle *xg;
2611
2612   xs_daemon_open();
2613
2614   xc = xc_interface_open(0, 0, 0);
2615   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2616   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2617   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2618   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
2619
2620   xfmem = xenforeignmemory_open(0, 0);
2621   xenforeignmemory_map(xfmem, 0, 0, 0, 0, 0);
2622
2623   xe = xenevtchn_open(0, 0);
2624   xenevtchn_fd(xe);
2625
2626   xg = xengnttab_open(0, 0);
2627   xengnttab_map_grant_ref(xg, 0, 0, 0);
2628
2629   return 0;
2630 }
2631 EOF
2632         compile_prog "" "$xen_libs $xen_stable_libs"
2633       then
2634       xen_ctrl_version=40701
2635       xen=yes
2636
2637     # Xen 4.6
2638     elif
2639         cat > $TMPC <<EOF &&
2640 #include <xenctrl.h>
2641 #include <xenstore.h>
2642 #include <stdint.h>
2643 #include <xen/hvm/hvm_info_table.h>
2644 #if !defined(HVM_MAX_VCPUS)
2645 # error HVM_MAX_VCPUS not defined
2646 #endif
2647 int main(void) {
2648   xc_interface *xc;
2649   xs_daemon_open();
2650   xc = xc_interface_open(0, 0, 0);
2651   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2652   xc_gnttab_open(NULL, 0);
2653   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2654   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2655   xc_hvm_create_ioreq_server(xc, 0, HVM_IOREQSRV_BUFIOREQ_ATOMIC, NULL);
2656   xc_reserved_device_memory_map(xc, 0, 0, 0, 0, NULL, 0);
2657   return 0;
2658 }
2659 EOF
2660         compile_prog "" "$xen_libs"
2661       then
2662       xen_ctrl_version=40600
2663       xen=yes
2664
2665     # Xen 4.5
2666     elif
2667         cat > $TMPC <<EOF &&
2668 #include <xenctrl.h>
2669 #include <xenstore.h>
2670 #include <stdint.h>
2671 #include <xen/hvm/hvm_info_table.h>
2672 #if !defined(HVM_MAX_VCPUS)
2673 # error HVM_MAX_VCPUS not defined
2674 #endif
2675 int main(void) {
2676   xc_interface *xc;
2677   xs_daemon_open();
2678   xc = xc_interface_open(0, 0, 0);
2679   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2680   xc_gnttab_open(NULL, 0);
2681   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2682   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2683   xc_hvm_create_ioreq_server(xc, 0, 0, NULL);
2684   return 0;
2685 }
2686 EOF
2687         compile_prog "" "$xen_libs"
2688       then
2689       xen_ctrl_version=40500
2690       xen=yes
2691
2692     elif
2693         cat > $TMPC <<EOF &&
2694 #include <xenctrl.h>
2695 #include <xenstore.h>
2696 #include <stdint.h>
2697 #include <xen/hvm/hvm_info_table.h>
2698 #if !defined(HVM_MAX_VCPUS)
2699 # error HVM_MAX_VCPUS not defined
2700 #endif
2701 int main(void) {
2702   xc_interface *xc;
2703   xs_daemon_open();
2704   xc = xc_interface_open(0, 0, 0);
2705   xc_hvm_set_mem_type(0, 0, HVMMEM_ram_ro, 0, 0);
2706   xc_gnttab_open(NULL, 0);
2707   xc_domain_add_to_physmap(0, 0, XENMAPSPACE_gmfn, 0, 0);
2708   xc_hvm_inject_msi(xc, 0, 0xf0000000, 0x00000000);
2709   return 0;
2710 }
2711 EOF
2712         compile_prog "" "$xen_libs"
2713       then
2714       xen_ctrl_version=40200
2715       xen=yes
2716
2717     else
2718       if test "$xen" = "yes" ; then
2719         feature_not_found "xen (unsupported version)" \
2720                           "Install a supported xen (xen 4.2 or newer)"
2721       fi
2722       xen=no
2723     fi
2724
2725     if test "$xen" = yes; then
2726       if test $xen_ctrl_version -ge 40701  ; then
2727         libs_softmmu="$xen_stable_libs $libs_softmmu"
2728       fi
2729       libs_softmmu="$xen_libs $libs_softmmu"
2730     fi
2731   fi
2732 fi
2733
2734 if test "$xen_pci_passthrough" != "no"; then
2735   if test "$xen" = "yes" && test "$linux" = "yes"; then
2736     xen_pci_passthrough=yes
2737   else
2738     if test "$xen_pci_passthrough" = "yes"; then
2739       error_exit "User requested feature Xen PCI Passthrough" \
2740           " but this feature requires /sys from Linux"
2741     fi
2742     xen_pci_passthrough=no
2743   fi
2744 fi
2745
2746 ##########################################
2747 # Windows Hypervisor Platform accelerator (WHPX) check
2748 if test "$whpx" != "no" ; then
2749     if check_include "WinHvPlatform.h" && check_include "WinHvEmulation.h"; then
2750         whpx="yes"
2751     else
2752         if test "$whpx" = "yes"; then
2753             feature_not_found "WinHvPlatform" "WinHvEmulation is not installed"
2754         fi
2755         whpx="no"
2756     fi
2757 fi
2758
2759 ##########################################
2760 # Sparse probe
2761 if test "$sparse" != "no" ; then
2762   if has cgcc; then
2763     sparse=yes
2764   else
2765     if test "$sparse" = "yes" ; then
2766       feature_not_found "sparse" "Install sparse binary"
2767     fi
2768     sparse=no
2769   fi
2770 fi
2771
2772 ##########################################
2773 # X11 probe
2774 if $pkg_config --exists "x11"; then
2775     have_x11=yes
2776     x11_cflags=$($pkg_config --cflags x11)
2777     x11_libs=$($pkg_config --libs x11)
2778 fi
2779
2780 ##########################################
2781 # GTK probe
2782
2783 if test "$gtk" != "no"; then
2784     gtkpackage="gtk+-3.0"
2785     gtkx11package="gtk+-x11-3.0"
2786     gtkversion="3.14.0"
2787     if $pkg_config --exists "$gtkpackage >= $gtkversion"; then
2788         gtk_cflags=$($pkg_config --cflags $gtkpackage)
2789         gtk_libs=$($pkg_config --libs $gtkpackage)
2790         gtk_version=$($pkg_config --modversion $gtkpackage)
2791         if $pkg_config --exists "$gtkx11package >= $gtkversion"; then
2792             need_x11=yes
2793             gtk_cflags="$gtk_cflags $x11_cflags"
2794             gtk_libs="$gtk_libs $x11_libs"
2795         fi
2796         gtk="yes"
2797     elif test "$gtk" = "yes"; then
2798         feature_not_found "gtk" "Install gtk3-devel"
2799     else
2800         gtk="no"
2801     fi
2802 fi
2803
2804
2805 ##########################################
2806 # GNUTLS probe
2807
2808 if test "$gnutls" != "no"; then
2809     pass="no"
2810     if $pkg_config --exists "gnutls >= 3.1.18"; then
2811         gnutls_cflags=$($pkg_config --cflags gnutls)
2812         gnutls_libs=$($pkg_config --libs gnutls)
2813         # Packaging for the static libraries is not always correct.
2814         # At least ubuntu 18.04 ships only shared libraries.
2815         write_c_skeleton
2816         if compile_prog "" "$gnutls_libs" ; then
2817             LIBS="$gnutls_libs $LIBS"
2818             QEMU_CFLAGS="$QEMU_CFLAGS $gnutls_cflags"
2819             pass="yes"
2820         fi
2821     fi
2822     if test "$pass" = "no" && test "$gnutls" = "yes"; then
2823         feature_not_found "gnutls" "Install gnutls devel >= 3.1.18"
2824     else
2825         gnutls="$pass"
2826     fi
2827 fi
2828
2829
2830 # If user didn't give a --disable/enable-gcrypt flag,
2831 # then mark as disabled if user requested nettle
2832 # explicitly
2833 if test -z "$gcrypt"
2834 then
2835     if test "$nettle" = "yes"
2836     then
2837         gcrypt="no"
2838     fi
2839 fi
2840
2841 # If user didn't give a --disable/enable-nettle flag,
2842 # then mark as disabled if user requested gcrypt
2843 # explicitly
2844 if test -z "$nettle"
2845 then
2846     if test "$gcrypt" = "yes"
2847     then
2848         nettle="no"
2849     fi
2850 fi
2851
2852 has_libgcrypt() {
2853     if ! has "libgcrypt-config"
2854     then
2855         return 1
2856     fi
2857
2858     if test -n "$cross_prefix"
2859     then
2860         host=$(libgcrypt-config --host)
2861         if test "$host-" != $cross_prefix
2862         then
2863             return 1
2864         fi
2865     fi
2866
2867     maj=`libgcrypt-config --version | awk -F . '{print $1}'`
2868     min=`libgcrypt-config --version | awk -F . '{print $2}'`
2869
2870     if test $maj != 1 || test $min -lt 5
2871     then
2872        return 1
2873     fi
2874
2875     return 0
2876 }
2877
2878
2879 if test "$nettle" != "no"; then
2880     pass="no"
2881     if $pkg_config --exists "nettle >= 2.7.1"; then
2882         nettle_cflags=$($pkg_config --cflags nettle)
2883         nettle_libs=$($pkg_config --libs nettle)
2884         nettle_version=$($pkg_config --modversion nettle)
2885         # Link test to make sure the given libraries work (e.g for static).
2886         write_c_skeleton
2887         if compile_prog "" "$nettle_libs" ; then
2888             LIBS="$nettle_libs $LIBS"
2889             QEMU_CFLAGS="$QEMU_CFLAGS $nettle_cflags"
2890             if test -z "$gcrypt"; then
2891                gcrypt="no"
2892             fi
2893             pass="yes"
2894         fi
2895     fi
2896     if test "$pass" = "no" && test "$nettle" = "yes"; then
2897         feature_not_found "nettle" "Install nettle devel >= 2.7.1"
2898     else
2899         nettle="$pass"
2900     fi
2901 fi
2902
2903 if test "$gcrypt" != "no"; then
2904     pass="no"
2905     if has_libgcrypt; then
2906         gcrypt_cflags=$(libgcrypt-config --cflags)
2907         gcrypt_libs=$(libgcrypt-config --libs)
2908         # Debian has removed -lgpg-error from libgcrypt-config
2909         # as it "spreads unnecessary dependencies" which in
2910         # turn breaks static builds...
2911         if test "$static" = "yes"
2912         then
2913             gcrypt_libs="$gcrypt_libs -lgpg-error"
2914         fi
2915
2916         # Link test to make sure the given libraries work (e.g for static).
2917         write_c_skeleton
2918         if compile_prog "" "$gcrypt_libs" ; then
2919             LIBS="$gcrypt_libs $LIBS"
2920             QEMU_CFLAGS="$QEMU_CFLAGS $gcrypt_cflags"
2921             pass="yes"
2922         fi
2923     fi
2924     if test "$pass" = "yes"; then
2925         gcrypt="yes"
2926         cat > $TMPC << EOF
2927 #include <gcrypt.h>
2928 int main(void) {
2929   gcry_mac_hd_t handle;
2930   gcry_mac_open(&handle, GCRY_MAC_HMAC_MD5,
2931                 GCRY_MAC_FLAG_SECURE, NULL);
2932   return 0;
2933 }
2934 EOF
2935         if compile_prog "$gcrypt_cflags" "$gcrypt_libs" ; then
2936             gcrypt_hmac=yes
2937         fi
2938     elif test "$gcrypt" = "yes"; then
2939         feature_not_found "gcrypt" "Install gcrypt devel >= 1.5.0"
2940     else
2941         gcrypt="no"
2942     fi
2943 fi
2944
2945
2946 if test "$gcrypt" = "yes" && test "$nettle" = "yes"
2947 then
2948     error_exit "Only one of gcrypt & nettle can be enabled"
2949 fi
2950
2951 ##########################################
2952 # libtasn1 - only for the TLS creds/session test suite
2953
2954 tasn1=yes
2955 tasn1_cflags=""
2956 tasn1_libs=""
2957 if $pkg_config --exists "libtasn1"; then
2958     tasn1_cflags=$($pkg_config --cflags libtasn1)
2959     tasn1_libs=$($pkg_config --libs libtasn1)
2960 else
2961     tasn1=no
2962 fi
2963
2964
2965 ##########################################
2966 # PAM probe
2967
2968 if test "$auth_pam" != "no"; then
2969     cat > $TMPC <<EOF
2970 #include <security/pam_appl.h>
2971 #include <stdio.h>
2972 int main(void) {
2973    const char *service_name = "qemu";
2974    const char *user = "frank";
2975    const struct pam_conv pam_conv = { 0 };
2976    pam_handle_t *pamh = NULL;
2977    pam_start(service_name, user, &pam_conv, &pamh);
2978    return 0;
2979 }
2980 EOF
2981     if compile_prog "" "-lpam" ; then
2982         auth_pam=yes
2983     else
2984         if test "$auth_pam" = "yes"; then
2985             feature_not_found "PAM" "Install PAM development package"
2986         else
2987             auth_pam=no
2988         fi
2989     fi
2990 fi
2991
2992 ##########################################
2993 # getifaddrs (for tests/test-io-channel-socket )
2994
2995 have_ifaddrs_h=yes
2996 if ! check_include "ifaddrs.h" ; then
2997   have_ifaddrs_h=no
2998 fi
2999
3000 ##########################################
3001 # VTE probe
3002
3003 if test "$vte" != "no"; then
3004     vteminversion="0.32.0"
3005     if $pkg_config --exists "vte-2.91"; then
3006       vtepackage="vte-2.91"
3007     else
3008       vtepackage="vte-2.90"
3009     fi
3010     if $pkg_config --exists "$vtepackage >= $vteminversion"; then
3011         vte_cflags=$($pkg_config --cflags $vtepackage)
3012         vte_libs=$($pkg_config --libs $vtepackage)
3013         vteversion=$($pkg_config --modversion $vtepackage)
3014         vte="yes"
3015     elif test "$vte" = "yes"; then
3016         feature_not_found "vte" "Install libvte-2.90/2.91 devel"
3017     else
3018         vte="no"
3019     fi
3020 fi
3021
3022 ##########################################
3023 # SDL probe
3024
3025 # Look for sdl configuration program (pkg-config or sdl2-config).  Try
3026 # sdl2-config even without cross prefix, and favour pkg-config over sdl2-config.
3027
3028 sdl_probe ()
3029 {
3030   if $pkg_config sdl2 --exists; then
3031     sdlconfig="$pkg_config sdl2"
3032     sdlversion=$($sdlconfig --modversion 2>/dev/null)
3033   elif has "$sdl2_config"; then
3034     sdlconfig="$sdl2_config"
3035     sdlversion=$($sdlconfig --version)
3036   else
3037     if test "$sdl" = "yes" ; then
3038       feature_not_found "sdl" "Install SDL2-devel"
3039     fi
3040     sdl=no
3041     # no need to do the rest
3042     return
3043   fi
3044   if test -n "$cross_prefix" && test "$(basename "$sdlconfig")" = sdl2-config; then
3045     echo warning: using "\"$sdlconfig\"" to detect cross-compiled sdl >&2
3046   fi
3047
3048   cat > $TMPC << EOF
3049 #include <SDL.h>
3050 #undef main /* We don't want SDL to override our main() */
3051 int main( void ) { return SDL_Init (SDL_INIT_VIDEO); }
3052 EOF
3053   sdl_cflags=$($sdlconfig --cflags 2>/dev/null)
3054   sdl_cflags="$sdl_cflags -Wno-undef"  # workaround 2.0.8 bug
3055   if test "$static" = "yes" ; then
3056     if $pkg_config sdl2 --exists; then
3057       sdl_libs=$($pkg_config sdl2 --static --libs 2>/dev/null)
3058     else
3059       sdl_libs=$($sdlconfig --static-libs 2>/dev/null)
3060     fi
3061   else
3062     sdl_libs=$($sdlconfig --libs 2>/dev/null)
3063   fi
3064   if compile_prog "$sdl_cflags" "$sdl_libs" ; then
3065     sdl=yes
3066
3067     # static link with sdl ? (note: sdl.pc's --static --libs is broken)
3068     if test "$sdl" = "yes" && test "$static" = "yes" ; then
3069       if test $? = 0 && echo $sdl_libs | grep -- -laa > /dev/null; then
3070          sdl_libs="$sdl_libs $(aalib-config --static-libs 2>/dev/null)"
3071          sdl_cflags="$sdl_cflags $(aalib-config --cflags 2>/dev/null)"
3072       fi
3073       if compile_prog "$sdl_cflags" "$sdl_libs" ; then
3074         :
3075       else
3076         sdl=no
3077       fi
3078     fi # static link
3079   else # sdl not found
3080     if test "$sdl" = "yes" ; then
3081       feature_not_found "sdl" "Install SDL2 devel"
3082     fi
3083     sdl=no
3084   fi # sdl compile test
3085 }
3086
3087 sdl_image_probe ()
3088 {
3089     if test "$sdl_image" != "no" ; then
3090         if $pkg_config SDL2_image --exists; then
3091             if test "$static" = "yes"; then
3092                 sdl_image_libs=$($pkg_config SDL2_image --libs --static 2>/dev/null)
3093             else
3094                 sdl_image_libs=$($pkg_config SDL2_image --libs 2>/dev/null)
3095             fi
3096             sdl_image_cflags=$($pkg_config SDL2_image --cflags 2>/dev/null)
3097             sdl_image=yes
3098
3099             sdl_cflags="$sdl_cflags $sdl_image_cflags"
3100             sdl_libs="$sdl_libs $sdl_image_libs"
3101         else
3102             if test "$sdl_image" = "yes" ; then
3103                 feature_not_found "sdl_image" "Install SDL Image devel"
3104             else
3105                 sdl_image=no
3106             fi
3107         fi
3108     fi
3109 }
3110
3111 if test "$sdl" != "no" ; then
3112   sdl_probe
3113 fi
3114
3115 if test "$sdl" = "yes" ; then
3116   sdl_image_probe
3117 else
3118   if test "$sdl_image" = "yes"; then
3119     echo "warning: SDL Image requested, but SDL is not available, disabling"
3120   fi
3121   sdl_image=no
3122 fi
3123
3124 if test "$sdl" = "yes" ; then
3125   cat > $TMPC <<EOF
3126 #include <SDL.h>
3127 #if defined(SDL_VIDEO_DRIVER_X11)
3128 #include <X11/XKBlib.h>
3129 #else
3130 #error No x11 support
3131 #endif
3132 int main(void) { return 0; }
3133 EOF
3134   if compile_prog "$sdl_cflags $x11_cflags" "$sdl_libs $x11_libs" ; then
3135     need_x11=yes
3136     sdl_cflags="$sdl_cflags $x11_cflags"
3137     sdl_libs="$sdl_libs $x11_libs"
3138   fi
3139 fi
3140
3141 ##########################################
3142 # RDMA needs OpenFabrics libraries
3143 if test "$rdma" != "no" ; then
3144   cat > $TMPC <<EOF
3145 #include <rdma/rdma_cma.h>
3146 int main(void) { return 0; }
3147 EOF
3148   rdma_libs="-lrdmacm -libverbs -libumad"
3149   if compile_prog "" "$rdma_libs" ; then
3150     rdma="yes"
3151     libs_softmmu="$libs_softmmu $rdma_libs"
3152   else
3153     if test "$rdma" = "yes" ; then
3154         error_exit \
3155             " OpenFabrics librdmacm/libibverbs/libibumad not present." \
3156             " Your options:" \
3157             "  (1) Fast: Install infiniband packages (devel) from your distro." \
3158             "  (2) Cleanest: Install libraries from www.openfabrics.org" \
3159             "  (3) Also: Install softiwarp if you don't have RDMA hardware"
3160     fi
3161     rdma="no"
3162   fi
3163 fi
3164
3165 ##########################################
3166 # PVRDMA detection
3167
3168 cat > $TMPC <<EOF &&
3169 #include <sys/mman.h>
3170
3171 int
3172 main(void)
3173 {
3174     char buf = 0;
3175     void *addr = &buf;
3176     addr = mremap(addr, 0, 1, MREMAP_MAYMOVE | MREMAP_FIXED);
3177
3178     return 0;
3179 }
3180 EOF
3181
3182 if test "$rdma" = "yes" ; then
3183     case "$pvrdma" in
3184     "")
3185         if compile_prog "" ""; then
3186             pvrdma="yes"
3187         else
3188             pvrdma="no"
3189         fi
3190         ;;
3191     "yes")
3192         if ! compile_prog "" ""; then
3193             error_exit "PVRDMA is not supported since mremap is not implemented"
3194         fi
3195         pvrdma="yes"
3196         ;;
3197     "no")
3198         pvrdma="no"
3199         ;;
3200     esac
3201 else
3202     if test "$pvrdma" = "yes" ; then
3203         error_exit "PVRDMA requires rdma suppport"
3204     fi
3205     pvrdma="no"
3206 fi
3207
3208 ##########################################
3209 # VNC SASL detection
3210 if test "$vnc" = "yes" && test "$vnc_sasl" != "no" ; then
3211   cat > $TMPC <<EOF
3212 #include <sasl/sasl.h>
3213 #include <stdio.h>
3214 int main(void) { sasl_server_init(NULL, "qemu"); return 0; }
3215 EOF
3216   # Assuming Cyrus-SASL installed in /usr prefix
3217   vnc_sasl_cflags=""
3218   vnc_sasl_libs="-lsasl2"
3219   if compile_prog "$vnc_sasl_cflags" "$vnc_sasl_libs" ; then
3220     vnc_sasl=yes
3221     libs_softmmu="$vnc_sasl_libs $libs_softmmu"
3222     QEMU_CFLAGS="$QEMU_CFLAGS $vnc_sasl_cflags"
3223   else
3224     if test "$vnc_sasl" = "yes" ; then
3225       feature_not_found "vnc-sasl" "Install Cyrus SASL devel"
3226     fi
3227     vnc_sasl=no
3228   fi
3229 fi
3230
3231 ##########################################
3232 # VNC JPEG detection
3233 if test "$vnc" = "yes" && test "$vnc_jpeg" != "no" ; then
3234 cat > $TMPC <<EOF
3235 #include <stdio.h>
3236 #include <jpeglib.h>
3237 int main(void) { struct jpeg_compress_struct s; jpeg_create_compress(&s); return 0; }
3238 EOF
3239     vnc_jpeg_cflags=""
3240     vnc_jpeg_libs="-ljpeg"
3241   if compile_prog "$vnc_jpeg_cflags" "$vnc_jpeg_libs" ; then
3242     vnc_jpeg=yes
3243     libs_softmmu="$vnc_jpeg_libs $libs_softmmu"
3244     QEMU_CFLAGS="$QEMU_CFLAGS $vnc_jpeg_cflags"
3245   else
3246     if test "$vnc_jpeg" = "yes" ; then
3247       feature_not_found "vnc-jpeg" "Install libjpeg-turbo devel"
3248     fi
3249     vnc_jpeg=no
3250   fi
3251 fi
3252
3253 ##########################################
3254 # VNC PNG detection
3255 if test "$vnc" = "yes" && test "$vnc_png" != "no" ; then
3256 cat > $TMPC <<EOF
3257 //#include <stdio.h>
3258 #include <png.h>
3259 #include <stddef.h>
3260 int main(void) {
3261     png_structp png_ptr;
3262     png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
3263     return png_ptr != 0;
3264 }
3265 EOF
3266   if $pkg_config libpng --exists; then
3267     vnc_png_cflags=$($pkg_config libpng --cflags)
3268     vnc_png_libs=$($pkg_config libpng --libs)
3269   else
3270     vnc_png_cflags=""
3271     vnc_png_libs="-lpng"
3272   fi
3273   if compile_prog "$vnc_png_cflags" "$vnc_png_libs" ; then
3274     vnc_png=yes
3275     libs_softmmu="$vnc_png_libs $libs_softmmu"
3276     QEMU_CFLAGS="$QEMU_CFLAGS $vnc_png_cflags"
3277   else
3278     if test "$vnc_png" = "yes" ; then
3279       feature_not_found "vnc-png" "Install libpng devel"
3280     fi
3281     vnc_png=no
3282   fi
3283 fi
3284
3285 ##########################################
3286 # xkbcommon probe
3287 if test "$xkbcommon" != "no" ; then
3288   if $pkg_config xkbcommon --exists; then
3289     xkbcommon_cflags=$($pkg_config xkbcommon --cflags)
3290     xkbcommon_libs=$($pkg_config xkbcommon --libs)
3291     xkbcommon=yes
3292   else
3293     if test "$xkbcommon" = "yes" ; then
3294       feature_not_found "xkbcommon" "Install libxkbcommon-devel"
3295     fi
3296     xkbcommon=no
3297   fi
3298 fi
3299
3300
3301 ##########################################
3302 # xfsctl() probe, used for file-posix.c
3303 if test "$xfs" != "no" ; then
3304   cat > $TMPC << EOF
3305 #include <stddef.h>  /* NULL */
3306 #include <xfs/xfs.h>
3307 int main(void)
3308 {
3309     xfsctl(NULL, 0, 0, NULL);
3310     return 0;
3311 }
3312 EOF
3313   if compile_prog "" "" ; then
3314     xfs="yes"
3315   else
3316     if test "$xfs" = "yes" ; then
3317       feature_not_found "xfs" "Instal xfsprogs/xfslibs devel"
3318     fi
3319     xfs=no
3320   fi
3321 fi
3322
3323 ##########################################
3324 # vde libraries probe
3325 if test "$vde" != "no" ; then
3326   vde_libs="-lvdeplug"
3327   cat > $TMPC << EOF
3328 #include <libvdeplug.h>
3329 int main(void)
3330 {
3331     struct vde_open_args a = {0, 0, 0};
3332     char s[] = "";
3333     vde_open(s, s, &a);
3334     return 0;
3335 }
3336 EOF
3337   if compile_prog "" "$vde_libs" ; then
3338     vde=yes
3339   else
3340     if test "$vde" = "yes" ; then
3341       feature_not_found "vde" "Install vde (Virtual Distributed Ethernet) devel"
3342     fi
3343     vde=no
3344   fi
3345 fi
3346
3347 ##########################################
3348 # netmap support probe
3349 # Apart from looking for netmap headers, we make sure that the host API version
3350 # supports the netmap backend (>=11). The upper bound (15) is meant to simulate
3351 # a minor/major version number. Minor new features will be marked with values up
3352 # to 15, and if something happens that requires a change to the backend we will
3353 # move above 15, submit the backend fixes and modify this two bounds.
3354 if test "$netmap" != "no" ; then
3355   cat > $TMPC << EOF
3356 #include <inttypes.h>
3357 #include <net/if.h>
3358 #include <net/netmap.h>
3359 #include <net/netmap_user.h>
3360 #if (NETMAP_API < 11) || (NETMAP_API > 15)
3361 #error
3362 #endif
3363 int main(void) { return 0; }
3364 EOF
3365   if compile_prog "" "" ; then
3366     netmap=yes
3367   else
3368     if test "$netmap" = "yes" ; then
3369       feature_not_found "netmap"
3370     fi
3371     netmap=no
3372   fi
3373 fi
3374
3375 ##########################################
3376 # libcap-ng library probe
3377 if test "$cap_ng" != "no" ; then
3378   cap_libs="-lcap-ng"
3379   cat > $TMPC << EOF
3380 #include <cap-ng.h>
3381 int main(void)
3382 {
3383     capng_capability_to_name(CAPNG_EFFECTIVE);
3384     return 0;
3385 }
3386 EOF
3387   if compile_prog "" "$cap_libs" ; then
3388     cap_ng=yes
3389     libs_tools="$cap_libs $libs_tools"
3390   else
3391     if test "$cap_ng" = "yes" ; then
3392       feature_not_found "cap_ng" "Install libcap-ng devel"
3393     fi
3394     cap_ng=no
3395   fi
3396 fi
3397
3398 ##########################################
3399 # Sound support libraries probe
3400
3401 audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/,/ /g')
3402 for drv in $audio_drv_list; do
3403     case $drv in
3404     alsa | try-alsa)
3405     if $pkg_config alsa --exists; then
3406         alsa_libs=$($pkg_config alsa --libs)
3407         if test "$drv" = "try-alsa"; then
3408             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-alsa/alsa/')
3409         fi
3410     else
3411         if test "$drv" = "try-alsa"; then
3412             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-alsa//')
3413         else
3414             error_exit "$drv check failed" \
3415                 "Make sure to have the $drv libs and headers installed."
3416         fi
3417     fi
3418     ;;
3419
3420     pa | try-pa)
3421     if $pkg_config libpulse --exists; then
3422         pulse_libs=$($pkg_config libpulse --libs)
3423         audio_pt_int="yes"
3424         if test "$drv" = "try-pa"; then
3425             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-pa/pa/')
3426         fi
3427     else
3428         if test "$drv" = "try-pa"; then
3429             audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-pa//')
3430         else
3431             error_exit "$drv check failed" \
3432                 "Make sure to have the $drv libs and headers installed."
3433         fi
3434     fi
3435     ;;
3436
3437     sdl)
3438     if test "$sdl" = "no"; then
3439         error_exit "sdl not found or disabled, can not use sdl audio driver"
3440     fi
3441     ;;
3442
3443     try-sdl)
3444     if test "$sdl" = "no"; then
3445         audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-sdl//')
3446     else
3447         audio_drv_list=$(echo "$audio_drv_list" | sed -e 's/try-sdl/sdl/')
3448     fi
3449     ;;
3450
3451     coreaudio)
3452       coreaudio_libs="-framework CoreAudio"
3453     ;;
3454
3455     dsound)
3456       dsound_libs="-lole32 -ldxguid"
3457       audio_win_int="yes"
3458     ;;
3459
3460     oss)
3461       oss_libs="$oss_lib"
3462     ;;
3463
3464     *)
3465     echo "$audio_possible_drivers" | grep -q "\<$drv\>" || {
3466         error_exit "Unknown driver '$drv' selected" \
3467             "Possible drivers are: $audio_possible_drivers"
3468     }
3469     ;;
3470     esac
3471 done
3472
3473 ##########################################
3474 # BrlAPI probe
3475
3476 if test "$brlapi" != "no" ; then
3477   brlapi_libs="-lbrlapi"
3478   cat > $TMPC << EOF
3479 #include <brlapi.h>
3480 #include <stddef.h>
3481 int main( void ) { return brlapi__openConnection (NULL, NULL, NULL); }
3482 EOF
3483   if compile_prog "" "$brlapi_libs" ; then
3484     brlapi=yes
3485   else
3486     if test "$brlapi" = "yes" ; then
3487       feature_not_found "brlapi" "Install brlapi devel"
3488     fi
3489     brlapi=no
3490   fi
3491 fi
3492
3493 ##########################################
3494 # iconv probe
3495 if test "$iconv" != "no" ; then
3496   cat > $TMPC << EOF
3497 #include <iconv.h>
3498 int main(void) {
3499   iconv_t conv = iconv_open("WCHAR_T", "UCS-2");
3500   return conv != (iconv_t) -1;
3501 }
3502 EOF
3503   iconv_prefix_list="/usr/local:/usr"
3504   iconv_lib_list=":-liconv"
3505   IFS=:
3506   for iconv_prefix in $iconv_prefix_list; do
3507     IFS=:
3508     iconv_cflags="-I$iconv_prefix/include"
3509     iconv_ldflags="-L$iconv_prefix/lib"
3510     for iconv_link in $iconv_lib_list; do
3511       unset IFS
3512       iconv_lib="$iconv_ldflags $iconv_link"
3513       echo "looking at iconv in '$iconv_cflags' '$iconv_lib'" >> config.log
3514       if compile_prog "$iconv_cflags" "$iconv_lib" ; then
3515         iconv_found=yes
3516         break
3517       fi
3518     done
3519     if test "$iconv_found" = yes ; then
3520       break
3521     fi
3522   done
3523   if test "$iconv_found" = "yes" ; then
3524     iconv=yes
3525   else
3526     if test "$iconv" = "yes" ; then
3527       feature_not_found "iconv" "Install iconv devel"
3528     fi
3529     iconv=no
3530   fi
3531 fi
3532
3533 ##########################################
3534 # curses probe
3535 if test "$iconv" = "no" ; then
3536   # curses will need iconv
3537   curses=no
3538 fi
3539 if test "$curses" != "no" ; then
3540   if test "$mingw32" = "yes" ; then
3541     curses_inc_list="$($pkg_config --cflags ncurses 2>/dev/null):"
3542     curses_lib_list="$($pkg_config --libs ncurses 2>/dev/null):-lpdcurses"
3543   else
3544     curses_inc_list="$($pkg_config --cflags ncursesw 2>/dev/null):-I/usr/include/ncursesw:"
3545     curses_lib_list="$($pkg_config --libs ncursesw 2>/dev/null):-lncursesw:-lcursesw"
3546   fi
3547   curses_found=no
3548   cat > $TMPC << EOF
3549 #include <locale.h>
3550 #include <curses.h>
3551 #include <wchar.h>
3552 #include <langinfo.h>
3553 int main(void) {
3554   const char *codeset;
3555   wchar_t wch = L'w';
3556   setlocale(LC_ALL, "");
3557   resize_term(0, 0);
3558   addwstr(L"wide chars\n");
3559   addnwstr(&wch, 1);
3560   add_wch(WACS_DEGREE);
3561   codeset = nl_langinfo(CODESET);
3562   return codeset != 0;
3563 }
3564 EOF
3565   IFS=:
3566   for curses_inc in $curses_inc_list; do
3567     # Make sure we get the wide character prototypes
3568     curses_inc="-DNCURSES_WIDECHAR $curses_inc"
3569     IFS=:
3570     for curses_lib in $curses_lib_list; do
3571       unset IFS
3572       if compile_prog "$curses_inc" "$curses_lib" ; then
3573         curses_found=yes
3574         break
3575       fi
3576     done
3577     if test "$curses_found" = yes ; then
3578       break
3579     fi
3580   done
3581   unset IFS
3582   if test "$curses_found" = "yes" ; then
3583     curses=yes
3584   else
3585     if test "$curses" = "yes" ; then
3586       feature_not_found "curses" "Install ncurses devel"
3587     fi
3588     curses=no
3589   fi
3590 fi
3591
3592 ##########################################
3593 # curl probe
3594 if test "$curl" != "no" ; then
3595   if $pkg_config libcurl --exists; then
3596     curlconfig="$pkg_config libcurl"
3597   else
3598     curlconfig=curl-config
3599   fi
3600   cat > $TMPC << EOF
3601 #include <curl/curl.h>
3602 int main(void) { curl_easy_init(); curl_multi_setopt(0, 0, 0); return 0; }
3603 EOF
3604   curl_cflags=$($curlconfig --cflags 2>/dev/null)
3605   curl_libs=$($curlconfig --libs 2>/dev/null)
3606   if compile_prog "$curl_cflags" "$curl_libs" ; then
3607     curl=yes
3608   else
3609     if test "$curl" = "yes" ; then
3610       feature_not_found "curl" "Install libcurl devel"
3611     fi
3612     curl=no
3613   fi
3614 fi # test "$curl"
3615
3616 ##########################################
3617 # bluez support probe
3618 if test "$bluez" != "no" ; then
3619   cat > $TMPC << EOF
3620 #include <bluetooth/bluetooth.h>
3621 int main(void) { return bt_error(0); }
3622 EOF
3623   bluez_cflags=$($pkg_config --cflags bluez 2>/dev/null)
3624   bluez_libs=$($pkg_config --libs bluez 2>/dev/null)
3625   if compile_prog "$bluez_cflags" "$bluez_libs" ; then
3626     bluez=yes
3627     libs_softmmu="$bluez_libs $libs_softmmu"
3628   else
3629     if test "$bluez" = "yes" ; then
3630       feature_not_found "bluez" "Install bluez-libs/libbluetooth devel"
3631     fi
3632     bluez="no"
3633   fi
3634 fi
3635
3636 ##########################################
3637 # glib support probe
3638
3639 glib_req_ver=2.40
3640 glib_modules=gthread-2.0
3641 if test "$modules" = yes; then
3642     glib_modules="$glib_modules gmodule-export-2.0"
3643 fi
3644
3645 # This workaround is required due to a bug in pkg-config file for glib as it
3646 # doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
3647
3648 if test "$static" = yes && test "$mingw32" = yes; then
3649     QEMU_CFLAGS="-DGLIB_STATIC_COMPILATION $QEMU_CFLAGS"
3650 fi
3651
3652 for i in $glib_modules; do
3653     if $pkg_config --atleast-version=$glib_req_ver $i; then
3654         glib_cflags=$($pkg_config --cflags $i)
3655         glib_libs=$($pkg_config --libs $i)
3656         QEMU_CFLAGS="$glib_cflags $QEMU_CFLAGS"
3657         LIBS="$glib_libs $LIBS"
3658         libs_qga="$glib_libs $libs_qga"
3659     else
3660         error_exit "glib-$glib_req_ver $i is required to compile QEMU"
3661     fi
3662 done
3663
3664 if $pkg_config --atleast-version=$glib_req_ver gio-2.0; then
3665     gio=yes
3666     gio_cflags=$($pkg_config --cflags gio-2.0)
3667     gio_libs=$($pkg_config --libs gio-2.0)
3668 else
3669     gio=no
3670 fi
3671
3672 # Sanity check that the current size_t matches the
3673 # size that glib thinks it should be. This catches
3674 # problems on multi-arch where people try to build
3675 # 32-bit QEMU while pointing at 64-bit glib headers
3676 cat > $TMPC <<EOF
3677 #include <glib.h>
3678 #include <unistd.h>
3679
3680 #define QEMU_BUILD_BUG_ON(x) \
3681   typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
3682
3683 int main(void) {
3684    QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
3685    return 0;
3686 }
3687 EOF
3688
3689 if ! compile_prog "$CFLAGS" "$LIBS" ; then
3690     error_exit "sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T."\
3691                "You probably need to set PKG_CONFIG_LIBDIR"\
3692                "to point to the right pkg-config files for your"\
3693                "build target"
3694 fi
3695
3696 # Silence clang 3.5.0 warnings about glib attribute __alloc_size__ usage
3697 cat > $TMPC << EOF
3698 #include <glib.h>
3699 int main(void) { return 0; }
3700 EOF
3701 if ! compile_prog "$glib_cflags -Werror" "$glib_libs" ; then
3702     if cc_has_warning_flag "-Wno-unknown-attributes"; then
3703         glib_cflags="-Wno-unknown-attributes $glib_cflags"
3704         CFLAGS="-Wno-unknown-attributes $CFLAGS"
3705     fi
3706 fi
3707
3708 #########################################
3709 # zlib check
3710
3711 if test "$zlib" != "no" ; then
3712     if $pkg_config --exists zlib; then
3713         zlib_cflags=$($pkg_config --cflags zlib)
3714         zlib_libs=$($pkg_config --libs zlib)
3715         QEMU_CFLAGS="$zlib_cflags $QEMU_CFLAGS"
3716         LIBS="$zlib_libs $LIBS"
3717     else
3718         cat > $TMPC << EOF
3719 #include <zlib.h>
3720 int main(void) { zlibVersion(); return 0; }
3721 EOF
3722         if compile_prog "" "-lz" ; then
3723             LIBS="$LIBS -lz"
3724         else
3725             error_exit "zlib check failed" \
3726                 "Make sure to have the zlib libs and headers installed."
3727         fi
3728     fi
3729 fi
3730
3731 ##########################################
3732 # SHA command probe for modules
3733 if test "$modules" = yes; then
3734     shacmd_probe="sha1sum sha1 shasum"
3735     for c in $shacmd_probe; do
3736         if has $c; then
3737             shacmd="$c"
3738             break
3739         fi
3740     done
3741     if test "$shacmd" = ""; then
3742         error_exit "one of the checksum commands is required to enable modules: $shacmd_probe"
3743     fi
3744 fi
3745
3746 ##########################################
3747 # pixman support probe
3748
3749 if test "$want_tools" = "no" && test "$softmmu" = "no"; then
3750   pixman_cflags=
3751   pixman_libs=
3752 elif $pkg_config --atleast-version=0.21.8 pixman-1 > /dev/null 2>&1; then
3753   pixman_cflags=$($pkg_config --cflags pixman-1)
3754   pixman_libs=$($pkg_config --libs pixman-1)
3755 else
3756   error_exit "pixman >= 0.21.8 not present." \
3757       "Please install the pixman devel package."
3758 fi
3759
3760 ##########################################
3761 # libmpathpersist probe
3762
3763 if test "$mpath" != "no" ; then
3764   # probe for the new API
3765   cat > $TMPC <<EOF
3766 #include <libudev.h>
3767 #include <mpath_persist.h>
3768 unsigned mpath_mx_alloc_len = 1024;
3769 int logsink;
3770 static struct config *multipath_conf;
3771 extern struct udev *udev;
3772 extern struct config *get_multipath_config(void);
3773 extern void put_multipath_config(struct config *conf);
3774 struct udev *udev;
3775 struct config *get_multipath_config(void) { return multipath_conf; }
3776 void put_multipath_config(struct config *conf) { }
3777
3778 int main(void) {
3779     udev = udev_new();
3780     multipath_conf = mpath_lib_init();
3781     return 0;
3782 }
3783 EOF
3784   if compile_prog "" "-ludev -lmultipath -lmpathpersist" ; then
3785     mpathpersist=yes
3786     mpathpersist_new_api=yes
3787   else
3788     # probe for the old API
3789     cat > $TMPC <<EOF
3790 #include <libudev.h>
3791 #include <mpath_persist.h>
3792 unsigned mpath_mx_alloc_len = 1024;
3793 int logsink;
3794 int main(void) {
3795     struct udev *udev = udev_new();
3796     mpath_lib_init(udev);
3797     return 0;
3798 }
3799 EOF
3800     if compile_prog "" "-ludev -lmultipath -lmpathpersist" ; then
3801       mpathpersist=yes
3802       mpathpersist_new_api=no
3803     else
3804       mpathpersist=no
3805     fi
3806   fi
3807 else
3808   mpathpersist=no
3809 fi
3810
3811 ##########################################
3812 # libcap probe
3813
3814 if test "$cap" != "no" ; then
3815   cat > $TMPC <<EOF
3816 #include <stdio.h>
3817 #include <sys/capability.h>
3818 int main(void) { cap_t caps; caps = cap_init(); return caps != NULL; }
3819 EOF
3820   if compile_prog "" "-lcap" ; then
3821     cap=yes
3822   else
3823     cap=no
3824   fi
3825 fi
3826
3827 ##########################################
3828 # pthread probe
3829 PTHREADLIBS_LIST="-pthread -lpthread -lpthreadGC2"
3830
3831 pthread=no
3832 cat > $TMPC << EOF
3833 #include <pthread.h>
3834 static void *f(void *p) { return NULL; }
3835 int main(void) {
3836   pthread_t thread;
3837   pthread_create(&thread, 0, f, 0);
3838   return 0;
3839 }
3840 EOF
3841 if compile_prog "" "" ; then
3842   pthread=yes
3843 else
3844   for pthread_lib in $PTHREADLIBS_LIST; do
3845     if compile_prog "" "$pthread_lib" ; then
3846       pthread=yes
3847       found=no
3848       for lib_entry in $LIBS; do
3849         if test "$lib_entry" = "$pthread_lib"; then
3850           found=yes
3851           break
3852         fi
3853       done
3854       if test "$found" = "no"; then
3855         LIBS="$pthread_lib $LIBS"
3856         libs_qga="$pthread_lib $libs_qga"
3857       fi
3858       PTHREAD_LIB="$pthread_lib"
3859       break
3860     fi
3861   done
3862 fi
3863
3864 if test "$mingw32" != yes && test "$pthread" = no; then
3865   error_exit "pthread check failed" \
3866       "Make sure to have the pthread libs and headers installed."
3867 fi
3868
3869 # check for pthread_setname_np with thread id
3870 pthread_setname_np_w_tid=no
3871 cat > $TMPC << EOF
3872 #include <pthread.h>
3873
3874 static void *f(void *p) { return NULL; }
3875 int main(void)
3876 {
3877     pthread_t thread;
3878     pthread_create(&thread, 0, f, 0);
3879     pthread_setname_np(thread, "QEMU");
3880     return 0;
3881 }
3882 EOF
3883 if compile_prog "" "$pthread_lib" ; then
3884   pthread_setname_np_w_tid=yes
3885 fi
3886
3887 # check for pthread_setname_np without thread id
3888 pthread_setname_np_wo_tid=no
3889 cat > $TMPC << EOF
3890 #include <pthread.h>
3891
3892 static void *f(void *p) { pthread_setname_np("QEMU"); }
3893 int main(void)
3894 {
3895     pthread_t thread;
3896     pthread_create(&thread, 0, f, 0);
3897     return 0;
3898 }
3899 EOF
3900 if compile_prog "" "$pthread_lib" ; then
3901   pthread_setname_np_wo_tid=yes
3902 fi
3903
3904 ##########################################
3905 # rbd probe
3906 if test "$rbd" != "no" ; then
3907   cat > $TMPC <<EOF
3908 #include <stdio.h>
3909 #include <rbd/librbd.h>
3910 int main(void) {
3911     rados_t cluster;
3912     rados_create(&cluster, NULL);
3913     return 0;
3914 }
3915 EOF
3916   rbd_libs="-lrbd -lrados"
3917   if compile_prog "" "$rbd_libs" ; then
3918     rbd=yes
3919   else
3920     if test "$rbd" = "yes" ; then
3921       feature_not_found "rados block device" "Install librbd/ceph devel"
3922     fi
3923     rbd=no
3924   fi
3925 fi
3926
3927 ##########################################
3928 # libssh probe
3929 if test "$libssh" != "no" ; then
3930   if $pkg_config --exists libssh; then
3931     libssh_cflags=$($pkg_config libssh --cflags)
3932     libssh_libs=$($pkg_config libssh --libs)
3933     libssh=yes
3934   else
3935     if test "$libssh" = "yes" ; then
3936       error_exit "libssh required for --enable-libssh"
3937     fi
3938     libssh=no
3939   fi
3940 fi
3941
3942 ##########################################
3943 # Check for libssh 0.8
3944 # This is done like this instead of using the LIBSSH_VERSION_* and
3945 # SSH_VERSION_* macros because some distributions in the past shipped
3946 # snapshots of the future 0.8 from Git, and those snapshots did not
3947 # have updated version numbers (still referring to 0.7.0).
3948
3949 if test "$libssh" = "yes"; then
3950   cat > $TMPC <<EOF
3951 #include <libssh/libssh.h>
3952 int main(void) { return ssh_get_server_publickey(NULL, NULL); }
3953 EOF
3954   if compile_prog "$libssh_cflags" "$libssh_libs"; then
3955     libssh_cflags="-DHAVE_LIBSSH_0_8 $libssh_cflags"
3956   fi
3957 fi
3958
3959 ##########################################
3960 # linux-aio probe
3961
3962 if test "$linux_aio" != "no" ; then
3963   cat > $TMPC <<EOF
3964 #include <libaio.h>
3965 #include <sys/eventfd.h>
3966 #include <stddef.h>
3967 int main(void) { io_setup(0, NULL); io_set_eventfd(NULL, 0); eventfd(0, 0); return 0; }
3968 EOF
3969   if compile_prog "" "-laio" ; then
3970     linux_aio=yes
3971   else
3972     if test "$linux_aio" = "yes" ; then
3973       feature_not_found "linux AIO" "Install libaio devel"
3974     fi
3975     linux_aio=no
3976   fi
3977 fi
3978
3979 ##########################################
3980 # TPM emulation is only on POSIX
3981
3982 if test "$tpm" = ""; then
3983   if test "$mingw32" = "yes"; then
3984     tpm=no
3985   else
3986     tpm=yes
3987   fi
3988 elif test "$tpm" = "yes"; then
3989   if test "$mingw32" = "yes" ; then
3990     error_exit "TPM emulation only available on POSIX systems"
3991   fi
3992 fi
3993
3994 ##########################################
3995 # attr probe
3996
3997 if test "$attr" != "no" ; then
3998   cat > $TMPC <<EOF
3999 #include <stdio.h>
4000 #include <sys/types.h>
4001 #ifdef CONFIG_LIBATTR
4002 #include <attr/xattr.h>
4003 #else
4004 #include <sys/xattr.h>
4005 #endif
4006 int main(void) { getxattr(NULL, NULL, NULL, 0); setxattr(NULL, NULL, NULL, 0, 0); return 0; }
4007 EOF
4008   if compile_prog "" "" ; then
4009     attr=yes
4010   # Older distros have <attr/xattr.h>, and need -lattr:
4011   elif compile_prog "-DCONFIG_LIBATTR" "-lattr" ; then
4012     attr=yes
4013     LIBS="-lattr $LIBS"
4014     libattr=yes
4015   else
4016     if test "$attr" = "yes" ; then
4017       feature_not_found "ATTR" "Install libc6 or libattr devel"
4018     fi
4019     attr=no
4020   fi
4021 fi
4022
4023 ##########################################
4024 # iovec probe
4025 cat > $TMPC <<EOF
4026 #include <sys/types.h>
4027 #include <sys/uio.h>
4028 #include <unistd.h>
4029 int main(void) { return sizeof(struct iovec); }
4030 EOF
4031 iovec=no
4032 if compile_prog "" "" ; then
4033   iovec=yes
4034 fi
4035
4036 ##########################################
4037 # preadv probe
4038 cat > $TMPC <<EOF
4039 #include <sys/types.h>
4040 #include <sys/uio.h>
4041 #include <unistd.h>
4042 int main(void) { return preadv(0, 0, 0, 0); }
4043 EOF
4044 preadv=no
4045 if compile_prog "" "" ; then
4046   preadv=yes
4047 fi
4048
4049 ##########################################
4050 # fdt probe
4051 # fdt support is mandatory for at least some target architectures,
4052 # so insist on it if we're building those system emulators.
4053 fdt_required=no
4054 for target in $target_list; do
4055   case $target in
4056     aarch64*-softmmu|arm*-softmmu|ppc*-softmmu|microblaze*-softmmu|mips64el-softmmu|riscv*-softmmu)
4057       fdt_required=yes
4058     ;;
4059   esac
4060 done
4061
4062 if test "$fdt_required" = "yes"; then
4063   if test "$fdt" = "no"; then
4064     error_exit "fdt disabled but some requested targets require it." \
4065       "You can turn off fdt only if you also disable all the system emulation" \
4066       "targets which need it (by specifying a cut down --target-list)."
4067   fi
4068   fdt=yes
4069 fi
4070
4071 if test "$fdt" != "no" ; then
4072   fdt_libs="-lfdt"
4073   # explicitly check for libfdt_env.h as it is missing in some stable installs
4074   # and test for required functions to make sure we are on a version >= 1.4.2
4075   cat > $TMPC << EOF
4076 #include <libfdt.h>
4077 #include <libfdt_env.h>
4078 int main(void) { fdt_check_full(NULL, 0); return 0; }
4079 EOF
4080   if compile_prog "" "$fdt_libs" ; then
4081     # system DTC is good - use it
4082     fdt=system
4083   else
4084       # have GIT checkout, so activate dtc submodule
4085       if test -e "${source_path}/.git" ; then
4086           git_submodules="${git_submodules} dtc"
4087       fi
4088       if test -d "${source_path}/dtc/libfdt" || test -e "${source_path}/.git" ; then
4089           fdt=git
4090           mkdir -p dtc
4091           if [ "$pwd_is_source_path" != "y" ] ; then
4092               symlink "$source_path/dtc/Makefile" "dtc/Makefile"
4093               symlink "$source_path/dtc/scripts" "dtc/scripts"
4094           fi
4095           fdt_cflags="-I\$(SRC_PATH)/dtc/libfdt"
4096           fdt_ldflags="-L\$(BUILD_DIR)/dtc/libfdt"
4097           fdt_libs="$fdt_libs"
4098       elif test "$fdt" = "yes" ; then
4099           # Not a git build & no libfdt found, prompt for system install
4100           error_exit "DTC (libfdt) version >= 1.4.2 not present." \
4101                      "Please install the DTC (libfdt) devel package"
4102       else
4103           # don't have and don't want
4104           fdt_libs=
4105           fdt=no
4106       fi
4107   fi
4108 fi
4109
4110 libs_softmmu="$libs_softmmu $fdt_libs"
4111
4112 ##########################################
4113 # opengl probe (for sdl2, gtk, milkymist-tmu2)
4114
4115 gbm="no"
4116 if $pkg_config gbm; then
4117     gbm_cflags="$($pkg_config --cflags gbm)"
4118     gbm_libs="$($pkg_config --libs gbm)"
4119     gbm="yes"
4120 fi
4121
4122 if test "$opengl" != "no" ; then
4123   opengl_pkgs="epoxy gbm"
4124   if $pkg_config $opengl_pkgs; then
4125     opengl_cflags="$($pkg_config --cflags $opengl_pkgs)"
4126     opengl_libs="$($pkg_config --libs $opengl_pkgs)"
4127     opengl=yes
4128     if test "$gtk" = "yes" && $pkg_config --exists "$gtkpackage >= 3.16"; then
4129         gtk_gl="yes"
4130     fi
4131     QEMU_CFLAGS="$QEMU_CFLAGS $opengl_cflags"
4132   else
4133     if test "$opengl" = "yes" ; then
4134       feature_not_found "opengl" "Please install opengl (mesa) devel pkgs: $opengl_pkgs"
4135     fi
4136     opengl_cflags=""
4137     opengl_libs=""
4138     opengl=no
4139   fi
4140 fi
4141
4142 if test "$opengl" = "yes"; then
4143   cat > $TMPC << EOF
4144 #include <epoxy/egl.h>
4145 #ifndef EGL_MESA_image_dma_buf_export
4146 # error mesa/epoxy lacks support for dmabufs (mesa 10.6+)
4147 #endif
4148 int main(void) { return 0; }
4149 EOF
4150   if compile_prog "" "" ; then
4151     opengl_dmabuf=yes
4152   fi
4153 fi
4154
4155 if test "$opengl" = "yes" && test "$have_x11" = "yes"; then
4156   for target in $target_list; do
4157     case $target in
4158       lm32-softmmu) # milkymist-tmu2 requires X11 and OpenGL
4159         need_x11=yes
4160       ;;
4161     esac
4162   done
4163 fi
4164
4165 ##########################################
4166 # libxml2 probe
4167 if test "$libxml2" != "no" ; then
4168     if $pkg_config --exists libxml-2.0; then
4169         libxml2="yes"
4170         libxml2_cflags=$($pkg_config --cflags libxml-2.0)
4171         libxml2_libs=$($pkg_config --libs libxml-2.0)
4172     else
4173         if test "$libxml2" = "yes"; then
4174             feature_not_found "libxml2" "Install libxml2 devel"
4175         fi
4176         libxml2="no"
4177     fi
4178 fi
4179
4180 ##########################################
4181 # glusterfs probe
4182 if test "$glusterfs" != "no" ; then
4183   if $pkg_config --atleast-version=3 glusterfs-api; then
4184     glusterfs="yes"
4185     glusterfs_cflags=$($pkg_config --cflags glusterfs-api)
4186     glusterfs_libs=$($pkg_config --libs glusterfs-api)
4187     if $pkg_config --atleast-version=4 glusterfs-api; then
4188       glusterfs_xlator_opt="yes"
4189     fi
4190     if $pkg_config --atleast-version=5 glusterfs-api; then
4191       glusterfs_discard="yes"
4192     fi
4193     if $pkg_config --atleast-version=6 glusterfs-api; then
4194       glusterfs_fallocate="yes"
4195       glusterfs_zerofill="yes"
4196     fi
4197     cat > $TMPC << EOF
4198 #include <glusterfs/api/glfs.h>
4199
4200 int
4201 main(void)
4202 {
4203         /* new glfs_ftruncate() passes two additional args */
4204         return glfs_ftruncate(NULL, 0, NULL, NULL);
4205 }
4206 EOF
4207     if compile_prog "$glusterfs_cflags" "$glusterfs_libs" ; then
4208       glusterfs_ftruncate_has_stat="yes"
4209     fi
4210     cat > $TMPC << EOF
4211 #include <glusterfs/api/glfs.h>
4212
4213 /* new glfs_io_cbk() passes two additional glfs_stat structs */
4214 static void
4215 glusterfs_iocb(glfs_fd_t *fd, ssize_t ret, struct glfs_stat *prestat, struct glfs_stat *poststat, void *data)
4216 {}
4217