meson.build

   1 project('qemu', ['c'], meson_version: '>=0.63.0',
   2         default_options: ['warning_level=1', 'c_std=gnu11', 'cpp_std=gnu++11', 'b_colorout=auto',
   3                           'b_staticpic=false', 'stdsplit=false', 'optimization=2', 'b_pie=true'],
   4         version: files('VERSION'))
   5
   6 add_test_setup('quick', exclude_suites: ['slow', 'thorough'], is_default: true)
   7 add_test_setup('slow', exclude_suites: ['thorough'], env: ['G_TEST_SLOW=1', 'SPEED=slow'])
   8 add_test_setup('thorough', env: ['G_TEST_SLOW=1', 'SPEED=thorough'])
   9
  10 meson.add_postconf_script(find_program('scripts/symlink-install-tree.py'))
  11
  12 not_found = dependency('', required: false)
  13 keyval = import('keyval')
  14 ss = import('sourceset')
  15 fs = import('fs')
  16
  17 targetos = host_machine.system()
  18 sh = find_program('sh')
  19 config_host = keyval.load(meson.current_build_dir() / 'config-host.mak')
  20
  21 cc = meson.get_compiler('c')
  22 all_languages = ['c']
  23 if add_languages('cpp', required: false, native: false)
  24   all_languages += ['cpp']
  25   cxx = meson.get_compiler('cpp')
  26 endif
  27 if targetos == 'darwin' and \
  28    add_languages('objc', required: get_option('cocoa'), native: false)
  29   all_languages += ['objc']
  30   objc = meson.get_compiler('objc')
  31 endif
  32
  33 # Temporary directory used for files created while
  34 # configure runs. Since it is in the build directory
  35 # we can safely blow away any previous version of it
  36 # (and we need not jump through hoops to try to delete
  37 # it when configure exits.)
  38 tmpdir = meson.current_build_dir() / 'meson-private/temp'
  39
  40 if get_option('qemu_suffix').startswith('/')
  41   error('qemu_suffix cannot start with a /')
  42 endif
  43
  44 qemu_confdir = get_option('sysconfdir') / get_option('qemu_suffix')
  45 qemu_datadir = get_option('datadir') / get_option('qemu_suffix')
  46 qemu_docdir = get_option('docdir') / get_option('qemu_suffix')
  47 qemu_moddir = get_option('libdir') / get_option('qemu_suffix')
  48
  49 qemu_desktopdir = get_option('datadir') / 'applications'
  50 qemu_icondir = get_option('datadir') / 'icons'
  51
  52 config_host_data = configuration_data()
  53 genh = []
  54 qapi_trace_events = []
  55
  56 bsd_oses = ['gnu/kfreebsd', 'freebsd', 'netbsd', 'openbsd', 'dragonfly', 'darwin']
  57 supported_oses = ['windows', 'freebsd', 'netbsd', 'openbsd', 'darwin', 'sunos', 'linux']
  58 supported_cpus = ['ppc', 'ppc64', 's390x', 'riscv', 'x86', 'x86_64',
  59   'arm', 'aarch64', 'loongarch64', 'mips', 'mips64', 'sparc64']
  60
  61 cpu = host_machine.cpu_family()
  62
  63 # Unify riscv* to a single family.
  64 if cpu in ['riscv32', 'riscv64']
  65   cpu = 'riscv'
  66 endif
  67
  68 target_dirs = config_host['TARGET_DIRS'].split()
  69 have_linux_user = false
  70 have_bsd_user = false
  71 have_system = false
  72 foreach target : target_dirs
  73   have_linux_user = have_linux_user or target.endswith('linux-user')
  74   have_bsd_user = have_bsd_user or target.endswith('bsd-user')
  75   have_system = have_system or target.endswith('-softmmu')
  76 endforeach
  77 have_user = have_linux_user or have_bsd_user
  78 have_tools = get_option('tools') \
  79   .disable_auto_if(not have_system) \
  80   .allowed()
  81 have_ga = get_option('guest_agent') \
  82   .disable_auto_if(not have_system and not have_tools) \
  83   .require(targetos in ['sunos', 'linux', 'windows', 'freebsd', 'netbsd', 'openbsd'],
  84            error_message: 'unsupported OS for QEMU guest agent') \
  85   .allowed()
  86 enable_modules = get_option('modules') \
  87   .require(targetos != 'windows',
  88            error_message: 'Modules are not available for Windows') \
  89   .require(not get_option('prefer_static'),
  90            error_message: 'Modules are incompatible with static linking') \
  91   .allowed()
  92 have_block = have_system or have_tools
  93
  94 python = import('python').find_installation()
  95
  96 if cpu not in supported_cpus
  97   host_arch = 'unknown'
  98 elif cpu == 'x86'
  99   host_arch = 'i386'
 100 elif cpu == 'mips64'
 101   host_arch = 'mips'
 102 else
 103   host_arch = cpu
 104 endif
 105
 106 if cpu in ['x86', 'x86_64']
 107   kvm_targets = ['i386-softmmu', 'x86_64-softmmu']
 108 elif cpu == 'aarch64'
 109   kvm_targets = ['aarch64-softmmu']
 110 elif cpu == 's390x'
 111   kvm_targets = ['s390x-softmmu']
 112 elif cpu in ['ppc', 'ppc64']
 113   kvm_targets = ['ppc-softmmu', 'ppc64-softmmu']
 114 elif cpu in ['mips', 'mips64']
 115   kvm_targets = ['mips-softmmu', 'mipsel-softmmu', 'mips64-softmmu', 'mips64el-softmmu']
 116 elif cpu in ['riscv']
 117   kvm_targets = ['riscv32-softmmu', 'riscv64-softmmu']
 118 else
 119   kvm_targets = []
 120 endif
 121
 122 kvm_targets_c = '""'
 123 if get_option('kvm').allowed() and targetos == 'linux'
 124   kvm_targets_c = '"' + '" ,"'.join(kvm_targets) + '"'
 125 endif
 126 config_host_data.set('CONFIG_KVM_TARGETS', kvm_targets_c)
 127
 128 accelerator_targets = { 'CONFIG_KVM': kvm_targets }
 129
 130 if cpu in ['aarch64']
 131   accelerator_targets += {
 132     'CONFIG_HVF': ['aarch64-softmmu']
 133   }
 134 endif
 135
 136 if cpu in ['x86', 'x86_64', 'arm', 'aarch64']
 137   # i386 emulator provides xenpv machine type for multiple architectures
 138   accelerator_targets += {
 139     'CONFIG_XEN': ['i386-softmmu', 'x86_64-softmmu', 'aarch64-softmmu'],
 140   }
 141 endif
 142 if cpu in ['x86', 'x86_64']
 143   accelerator_targets += {
 144     'CONFIG_HAX': ['i386-softmmu', 'x86_64-softmmu'],
 145     'CONFIG_HVF': ['x86_64-softmmu'],
 146     'CONFIG_NVMM': ['i386-softmmu', 'x86_64-softmmu'],
 147     'CONFIG_WHPX': ['i386-softmmu', 'x86_64-softmmu'],
 148   }
 149 endif
 150
 151 modular_tcg = []
 152 # Darwin does not support references to thread-local variables in modules
 153 if targetos != 'darwin'
 154   modular_tcg = ['i386-softmmu', 'x86_64-softmmu']
 155 endif
 156
 157 edk2_targets = [ 'arm-softmmu', 'aarch64-softmmu', 'i386-softmmu', 'x86_64-softmmu' ]
 158 unpack_edk2_blobs = false
 159 foreach target : edk2_targets
 160   if target in target_dirs
 161     bzip2 = find_program('bzip2', required: get_option('install_blobs'))
 162     unpack_edk2_blobs = bzip2.found()
 163     break
 164   endif
 165 endforeach
 166
 167 dtrace = not_found
 168 stap = not_found
 169 if 'dtrace' in get_option('trace_backends')
 170   dtrace = find_program('dtrace', required: true)
 171   stap = find_program('stap', required: false)
 172   if stap.found()
 173     # Workaround to avoid dtrace(1) producing a file with 'hidden' symbol
 174     # visibility. Define STAP_SDT_V2 to produce 'default' symbol visibility
 175     # instead. QEMU --enable-modules depends on this because the SystemTap
 176     # semaphores are linked into the main binary and not the module's shared
 177     # object.
 178     add_global_arguments('-DSTAP_SDT_V2',
 179                          native: false, language: all_languages)
 180   endif
 181 endif
 182
 183 if get_option('iasl') == ''
 184   iasl = find_program('iasl', required: false)
 185 else
 186   iasl = find_program(get_option('iasl'), required: true)
 187 endif
 188
 189 ##################
 190 # Compiler flags #
 191 ##################
 192
 193 foreach lang : all_languages
 194   compiler = meson.get_compiler(lang)
 195   if compiler.get_id() == 'gcc' and compiler.version().version_compare('>=7.4')
 196     # ok
 197   elif compiler.get_id() == 'clang' and compiler.compiles('''
 198       #ifdef __apple_build_version__
 199       # if __clang_major__ < 12 || (__clang_major__ == 12 && __clang_minor__ < 0)
 200       #  error You need at least XCode Clang v12.0 to compile QEMU
 201       # endif
 202       #else
 203       # if __clang_major__ < 10 || (__clang_major__ == 10 && __clang_minor__ < 0)
 204       #  error You need at least Clang v10.0 to compile QEMU
 205       # endif
 206       #endif''')
 207     # ok
 208   else
 209     error('You either need GCC v7.4 or Clang v10.0 (or XCode Clang v12.0) to compile QEMU')
 210   endif
 211 endforeach
 212
 213 # default flags for all hosts
 214 # We use -fwrapv to tell the compiler that we require a C dialect where
 215 # left shift of signed integers is well defined and has the expected
 216 # 2s-complement style results. (Both clang and gcc agree that it
 217 # provides these semantics.)
 218
 219 qemu_common_flags = [
 220   '-D_GNU_SOURCE', '-D_FILE_OFFSET_BITS=64', '-D_LARGEFILE_SOURCE',
 221   '-fno-strict-aliasing', '-fno-common', '-fwrapv' ]
 222 qemu_cflags = []
 223 qemu_ldflags = []
 224
 225 if targetos == 'darwin'
 226   # Disable attempts to use ObjectiveC features in os/object.h since they
 227   # won't work when we're compiling with gcc as a C compiler.
 228   qemu_common_flags += '-DOS_OBJECT_USE_OBJC=0'
 229 elif targetos == 'solaris'
 230   # needed for CMSG_ macros in sys/socket.h
 231   qemu_common_flags += '-D_XOPEN_SOURCE=600'
 232   # needed for TIOCWIN* defines in termios.h
 233   qemu_common_flags += '-D__EXTENSIONS__'
 234 elif targetos == 'haiku'
 235   qemu_common_flags += ['-DB_USE_POSITIVE_POSIX_ERRORS', '-D_BSD_SOURCE', '-fPIC']
 236 endif
 237
 238 # __sync_fetch_and_and requires at least -march=i486. Many toolchains
 239 # use i686 as default anyway, but for those that don't, an explicit
 240 # specification is necessary
 241 if host_arch == 'i386' and not cc.links('''
 242   static int sfaa(int *ptr)
 243   {
 244     return __sync_fetch_and_and(ptr, 0);
 245   }
 246
 247   int main(void)
 248   {
 249     int val = 42;
 250     val = __sync_val_compare_and_swap(&val, 0, 1);
 251     sfaa(&val);
 252     return val;
 253   }''')
 254   qemu_common_flags = ['-march=i486'] + qemu_common_flags
 255 endif
 256
 257 if get_option('gprof')
 258   qemu_common_flags += ['-p']
 259   qemu_ldflags += ['-p']
 260 endif
 261
 262 if get_option('prefer_static')
 263   qemu_ldflags += get_option('b_pie') ? '-static-pie' : '-static'
 264 endif
 265
 266 # Meson currently only handles pie as a boolean for now, so if the user
 267 # has explicitly disabled PIE we need to extend our cflags.
 268 #
 269 # -no-pie is supposedly a linker flag that has no effect on the compiler
 270 # command line, but some distros, that didn't quite know what they were
 271 # doing, made local changes to gcc's specs file that turned it into
 272 # a compiler command-line flag.
 273 #
 274 # What about linker flags?  For a static build, no PIE is implied by -static
 275 # which we added above (and if it's not because of the same specs patching,
 276 # there's nothing we can do: compilation will fail, report a bug to your
 277 # distro and do not use --disable-pie in the meanwhile).  For dynamic linking,
 278 # instead, we can't add -no-pie because it overrides -shared: the linker then
 279 # tries to build an executable instead of a shared library and fails.  So
 280 # don't add -no-pie anywhere and cross fingers. :(
 281 if not get_option('b_pie')
 282   qemu_common_flags += cc.get_supported_arguments('-fno-pie', '-no-pie')
 283 endif
 284
 285 if not get_option('stack_protector').disabled()
 286   stack_protector_probe = '''
 287     int main(int argc, char *argv[])
 288     {
 289       char arr[64], *p = arr, *c = argv[argc - 1];
 290       while (*c) {
 291           *p++ = *c++;
 292       }
 293       return 0;
 294     }'''
 295   have_stack_protector = false
 296   foreach arg : ['-fstack-protector-strong', '-fstack-protector-all']
 297     # We need to check both a compile and a link, since some compiler
 298     # setups fail only on a .c->.o compile and some only at link time
 299     if cc.compiles(stack_protector_probe, args: ['-Werror', arg]) and \
 300        cc.links(stack_protector_probe, args: ['-Werror', arg])
 301       have_stack_protector = true
 302       qemu_cflags += arg
 303       qemu_ldflags += arg
 304       break
 305     endif
 306   endforeach
 307   get_option('stack_protector') \
 308     .require(have_stack_protector, error_message: 'Stack protector not supported')
 309 endif
 310
 311 coroutine_backend = get_option('coroutine_backend')
 312 ucontext_probe = '''
 313   #include <ucontext.h>
 314   #ifdef __stub_makecontext
 315   #error Ignoring glibc stub makecontext which will always fail
 316   #endif
 317   int main(void) { makecontext(0, 0, 0); return 0; }'''
 318
 319 # On Windows the only valid backend is the Windows specific one.
 320 # For POSIX prefer ucontext, but it's not always possible. The fallback
 321 # is sigcontext.
 322 supported_backends = []
 323 if targetos == 'windows'
 324   supported_backends += ['windows']
 325 else
 326   if targetos != 'darwin' and cc.links(ucontext_probe)
 327     supported_backends += ['ucontext']
 328   endif
 329   supported_backends += ['sigaltstack']
 330 endif
 331
 332 if coroutine_backend == 'auto'
 333   coroutine_backend = supported_backends[0]
 334 elif coroutine_backend not in supported_backends
 335   error('"@0@" backend requested but not available.  Available backends: @1@' \
 336         .format(coroutine_backend, ', '.join(supported_backends)))
 337 endif
 338
 339 # Compiles if SafeStack *not* enabled
 340 safe_stack_probe = '''
 341   int main(void)
 342   {
 343   #if defined(__has_feature)
 344   #if __has_feature(safe_stack)
 345   #error SafeStack Enabled
 346   #endif
 347   #endif
 348       return 0;
 349   }'''
 350 if get_option('safe_stack') != not cc.compiles(safe_stack_probe)
 351   safe_stack_arg = get_option('safe_stack') ? '-fsanitize=safe-stack' : '-fno-sanitize=safe-stack'
 352   if get_option('safe_stack') != not cc.compiles(safe_stack_probe, args: safe_stack_arg)
 353     error(get_option('safe_stack') \
 354           ? 'SafeStack not supported by your compiler' \
 355           : 'Cannot disable SafeStack')
 356   endif
 357   qemu_cflags += safe_stack_arg
 358   qemu_ldflags += safe_stack_arg
 359 endif
 360 if get_option('safe_stack') and coroutine_backend != 'ucontext'
 361   error('SafeStack is only supported with the ucontext coroutine backend')
 362 endif
 363
 364 if get_option('sanitizers')
 365   if cc.has_argument('-fsanitize=address')
 366     qemu_cflags = ['-fsanitize=address'] + qemu_cflags
 367     qemu_ldflags = ['-fsanitize=address'] + qemu_ldflags
 368   endif
 369
 370   # Detect static linking issue with ubsan - https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84285
 371   if cc.links('int main(int argc, char **argv) { return argc + 1; }',
 372               args: [qemu_ldflags, '-fsanitize=undefined'])
 373     qemu_cflags = ['-fsanitize=undefined'] + qemu_cflags
 374     qemu_ldflags = ['-fsanitize=undefined'] + qemu_ldflags
 375   endif
 376 endif
 377
 378 # Thread sanitizer is, for now, much noisier than the other sanitizers;
 379 # keep it separate until that is not the case.
 380 if get_option('tsan')
 381   if get_option('sanitizers')
 382     error('TSAN is not supported with other sanitizers')
 383   endif
 384   if not cc.has_function('__tsan_create_fiber',
 385                          args: '-fsanitize=thread',
 386                          prefix: '#include <sanitizer/tsan_interface.h>')
 387     error('Cannot enable TSAN due to missing fiber annotation interface')
 388   endif
 389   qemu_cflags = ['-fsanitize=thread'] + qemu_cflags
 390   qemu_ldflags = ['-fsanitize=thread'] + qemu_ldflags
 391 endif
 392
 393 # Detect support for PT_GNU_RELRO + DT_BIND_NOW.
 394 # The combination is known as "full relro", because .got.plt is read-only too.
 395 qemu_ldflags += cc.get_supported_link_arguments('-Wl,-z,relro', '-Wl,-z,now')
 396
 397 if targetos == 'windows'
 398   qemu_ldflags += cc.get_supported_link_arguments('-Wl,--no-seh', '-Wl,--nxcompat')
 399   qemu_ldflags += cc.get_supported_link_arguments('-Wl,--dynamicbase', '-Wl,--high-entropy-va')
 400 endif
 401
 402 # Exclude --warn-common with TSan to suppress warnings from the TSan libraries.
 403 if targetos != 'sunos' and not get_option('tsan')
 404   qemu_ldflags += cc.get_supported_link_arguments('-Wl,--warn-common')
 405 endif
 406
 407 if get_option('fuzzing')
 408   # Specify a filter to only instrument code that is directly related to
 409   # virtual-devices.
 410   configure_file(output: 'instrumentation-filter',
 411                  input: 'scripts/oss-fuzz/instrumentation-filter-template',
 412                  copy: true)
 413
 414   if cc.compiles('int main () { return 0; }',
 415                   name: '-fsanitize-coverage-allowlist=/dev/null',
 416                  args: ['-fsanitize-coverage-allowlist=/dev/null',
 417                         '-fsanitize-coverage=trace-pc'] )
 418     qemu_common_flags += ['-fsanitize-coverage-allowlist=instrumentation-filter']
 419   endif
 420
 421   if get_option('fuzzing_engine') == ''
 422     # Add CFLAGS to tell clang to add fuzzer-related instrumentation to all the
 423     # compiled code.  To build non-fuzzer binaries with --enable-fuzzing, link
 424     # everything with fsanitize=fuzzer-no-link. Otherwise, the linker will be
 425     # unable to bind the fuzzer-related callbacks added by instrumentation.
 426     qemu_common_flags += ['-fsanitize=fuzzer-no-link']
 427     qemu_ldflags += ['-fsanitize=fuzzer-no-link']
 428     # For the actual fuzzer binaries, we need to link against the libfuzzer
 429     # library. They need to be configurable, to support OSS-Fuzz
 430     fuzz_exe_ldflags = ['-fsanitize=fuzzer']
 431   else
 432     # LIB_FUZZING_ENGINE was set; assume we are running on OSS-Fuzz, and
 433     # the needed CFLAGS have already been provided
 434     fuzz_exe_ldflags = get_option('fuzzing_engine').split()
 435   endif
 436 endif
 437
 438 add_global_arguments(qemu_common_flags, native: false, language: all_languages)
 439 add_global_link_arguments(qemu_ldflags, native: false, language: all_languages)
 440
 441 # Collect warnings that we want to enable
 442
 443 warn_flags = [
 444   '-Wundef',
 445   '-Wwrite-strings',
 446   '-Wmissing-prototypes',
 447   '-Wstrict-prototypes',
 448   '-Wredundant-decls',
 449   '-Wold-style-declaration',
 450   '-Wold-style-definition',
 451   '-Wtype-limits',
 452   '-Wformat-security',
 453   '-Wformat-y2k',
 454   '-Winit-self',
 455   '-Wignored-qualifiers',
 456   '-Wempty-body',
 457   '-Wnested-externs',
 458   '-Wendif-labels',
 459   '-Wexpansion-to-defined',
 460   '-Wimplicit-fallthrough=2',
 461   '-Wmissing-format-attribute',
 462   '-Wno-initializer-overrides',
 463   '-Wno-missing-include-dirs',
 464   '-Wno-shift-negative-value',
 465   '-Wno-string-plus-int',
 466   '-Wno-typedef-redefinition',
 467   '-Wno-tautological-type-limit-compare',
 468   '-Wno-psabi',
 469   '-Wno-gnu-variable-sized-type-not-at-end',
 470 ]
 471
 472 if targetos != 'darwin'
 473   warn_flags += ['-Wthread-safety']
 474 endif
 475
 476 # Check that the C++ compiler exists and works with the C compiler.
 477 link_language = 'c'
 478 linker = cc
 479 qemu_cxxflags = []
 480 if 'cpp' in all_languages
 481   qemu_cxxflags = ['-D__STDC_LIMIT_MACROS', '-D__STDC_CONSTANT_MACROS', '-D__STDC_FORMAT_MACROS'] + qemu_cflags
 482   if cxx.links(files('scripts/main.c'), args: qemu_cflags)
 483     link_language = 'cpp'
 484     linker = cxx
 485   else
 486     message('C++ compiler does not work with C compiler')
 487     message('Disabling C++-specific optional code')
 488   endif
 489 endif
 490
 491 # clang does not support glibc + FORTIFY_SOURCE (is it still true?)
 492 if get_option('optimization') != '0' and targetos == 'linux'
 493   if cc.get_id() == 'gcc'
 494     qemu_cflags += ['-U_FORTIFY_SOURCE', '-D_FORTIFY_SOURCE=2']
 495   endif
 496   if 'cpp' in all_languages and cxx.get_id() == 'gcc'
 497     qemu_cxxflags += ['-U_FORTIFY_SOURCE', '-D_FORTIFY_SOURCE=2']
 498   endif
 499 endif
 500
 501 add_project_arguments(qemu_cflags, native: false, language: 'c')
 502 add_project_arguments(cc.get_supported_arguments(warn_flags), native: false, language: 'c')
 503 if 'cpp' in all_languages
 504   add_project_arguments(qemu_cxxflags, native: false, language: 'cpp')
 505   add_project_arguments(cxx.get_supported_arguments(warn_flags), native: false, language: 'cpp')
 506 endif
 507 if 'objc' in all_languages
 508   # Note sanitizer flags are not applied to Objective-C sources!
 509   add_project_arguments(objc.get_supported_arguments(warn_flags), native: false, language: 'objc')
 510 endif
 511 if targetos == 'linux'
 512   add_project_arguments('-isystem', meson.current_source_dir() / 'linux-headers',
 513                         '-isystem', 'linux-headers',
 514                         language: all_languages)
 515 endif
 516
 517 add_project_arguments('-iquote', '.',
 518                       '-iquote', meson.current_source_dir(),
 519                       '-iquote', meson.current_source_dir() / 'include',
 520                       language: all_languages)
 521
 522 # If a host-specific include directory exists, list that first...
 523 host_include = meson.current_source_dir() / 'host/include/'
 524 if fs.is_dir(host_include / host_arch)
 525   add_project_arguments('-iquote', host_include / host_arch,
 526                         language: all_languages)
 527 endif
 528 # ... followed by the generic fallback.
 529 add_project_arguments('-iquote', host_include / 'generic',
 530                       language: all_languages)
 531
 532 sparse = find_program('cgcc', required: get_option('sparse'))
 533 if sparse.found()
 534   run_target('sparse',
 535              command: [find_program('scripts/check_sparse.py'),
 536                        'compile_commands.json', sparse.full_path(), '-Wbitwise',
 537                        '-Wno-transparent-union', '-Wno-old-initializer',
 538                        '-Wno-non-pointer-null'])
 539 endif
 540
 541 ###########################################
 542 # Target-specific checks and dependencies #
 543 ###########################################
 544
 545 # Fuzzing
 546 if get_option('fuzzing') and get_option('fuzzing_engine') == '' and \
 547     not cc.links('''
 548           #include <stdint.h>
 549           #include <sys/types.h>
 550           int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
 551           int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { return 0; }
 552         ''',
 553         args: ['-Werror', '-fsanitize=fuzzer'])
 554   error('Your compiler does not support -fsanitize=fuzzer')
 555 endif
 556
 557 # Tracing backends
 558 if 'ftrace' in get_option('trace_backends') and targetos != 'linux'
 559   error('ftrace is supported only on Linux')
 560 endif
 561 if 'syslog' in get_option('trace_backends') and not cc.compiles('''
 562     #include <syslog.h>
 563     int main(void) {
 564         openlog("qemu", LOG_PID, LOG_DAEMON);
 565         syslog(LOG_INFO, "configure");
 566         return 0;
 567     }''')
 568   error('syslog is not supported on this system')
 569 endif
 570
 571 # Miscellaneous Linux-only features
 572 get_option('mpath') \
 573   .require(targetos == 'linux', error_message: 'Multipath is supported only on Linux')
 574
 575 multiprocess_allowed = get_option('multiprocess') \
 576   .require(targetos == 'linux', error_message: 'Multiprocess QEMU is supported only on Linux') \
 577   .allowed()
 578
 579 vfio_user_server_allowed = get_option('vfio_user_server') \
 580   .require(targetos == 'linux', error_message: 'vfio-user server is supported only on Linux') \
 581   .allowed()
 582
 583 have_tpm = get_option('tpm') \
 584   .require(targetos != 'windows', error_message: 'TPM emulation only available on POSIX systems') \
 585   .allowed()
 586
 587 # vhost
 588 have_vhost_user = get_option('vhost_user') \
 589   .disable_auto_if(targetos != 'linux') \
 590   .require(targetos != 'windows',
 591            error_message: 'vhost-user is not available on Windows').allowed()
 592 have_vhost_vdpa = get_option('vhost_vdpa') \
 593   .require(targetos == 'linux',
 594            error_message: 'vhost-vdpa is only available on Linux').allowed()
 595 have_vhost_kernel = get_option('vhost_kernel') \
 596   .require(targetos == 'linux',
 597            error_message: 'vhost-kernel is only available on Linux').allowed()
 598 have_vhost_user_crypto = get_option('vhost_crypto') \
 599   .require(have_vhost_user,
 600            error_message: 'vhost-crypto requires vhost-user to be enabled').allowed()
 601
 602 have_vhost = have_vhost_user or have_vhost_vdpa or have_vhost_kernel
 603
 604 have_vhost_net_user = have_vhost_user and get_option('vhost_net').allowed()
 605 have_vhost_net_vdpa = have_vhost_vdpa and get_option('vhost_net').allowed()
 606 have_vhost_net_kernel = have_vhost_kernel and get_option('vhost_net').allowed()
 607 have_vhost_net = have_vhost_net_kernel or have_vhost_net_user or have_vhost_net_vdpa
 608
 609 # Target-specific libraries and flags
 610 libm = cc.find_library('m', required: false)
 611 threads = dependency('threads')
 612 util = cc.find_library('util', required: false)
 613 winmm = []
 614 socket = []
 615 version_res = []
 616 coref = []
 617 iokit = []
 618 emulator_link_args = []
 619 nvmm =not_found
 620 hvf = not_found
 621 midl = not_found
 622 widl = not_found
 623 pathcch = not_found
 624 host_dsosuf = '.so'
 625 if targetos == 'windows'
 626   midl = find_program('midl', required: false)
 627   widl = find_program('widl', required: false)
 628   pathcch = cc.find_library('pathcch')
 629   socket = cc.find_library('ws2_32')
 630   winmm = cc.find_library('winmm')
 631
 632   win = import('windows')
 633   version_res = win.compile_resources('version.rc',
 634                                       depend_files: files('pc-bios/qemu-nsis.ico'),
 635                                       include_directories: include_directories('.'))
 636   host_dsosuf = '.dll'
 637 elif targetos == 'darwin'
 638   coref = dependency('appleframeworks', modules: 'CoreFoundation')
 639   iokit = dependency('appleframeworks', modules: 'IOKit', required: false)
 640   host_dsosuf = '.dylib'
 641 elif targetos == 'sunos'
 642   socket = [cc.find_library('socket'),
 643             cc.find_library('nsl'),
 644             cc.find_library('resolv')]
 645 elif targetos == 'haiku'
 646   socket = [cc.find_library('posix_error_mapper'),
 647             cc.find_library('network'),
 648             cc.find_library('bsd')]
 649 elif targetos == 'openbsd'
 650   if get_option('tcg').allowed() and target_dirs.length() > 0
 651     # Disable OpenBSD W^X if available
 652     emulator_link_args = cc.get_supported_link_arguments('-Wl,-z,wxneeded')
 653   endif
 654 endif
 655
 656 # Target-specific configuration of accelerators
 657 accelerators = []
 658 if get_option('kvm').allowed() and targetos == 'linux'
 659   accelerators += 'CONFIG_KVM'
 660 endif
 661 if get_option('whpx').allowed() and targetos == 'windows'
 662   if get_option('whpx').enabled() and host_machine.cpu() != 'x86_64'
 663     error('WHPX requires 64-bit host')
 664   elif cc.has_header('WinHvPlatform.h', required: get_option('whpx')) and \
 665        cc.has_header('WinHvEmulation.h', required: get_option('whpx'))
 666     accelerators += 'CONFIG_WHPX'
 667   endif
 668 endif
 669 if get_option('hvf').allowed()
 670   hvf = dependency('appleframeworks', modules: 'Hypervisor',
 671                    required: get_option('hvf'))
 672   if hvf.found()
 673     accelerators += 'CONFIG_HVF'
 674   endif
 675 endif
 676 if get_option('hax').allowed()
 677   if get_option('hax').enabled() or targetos in ['windows', 'darwin', 'netbsd']
 678     accelerators += 'CONFIG_HAX'
 679   endif
 680 endif
 681 if targetos == 'netbsd'
 682   nvmm = cc.find_library('nvmm', required: get_option('nvmm'))
 683   if nvmm.found()
 684     accelerators += 'CONFIG_NVMM'
 685   endif
 686 endif
 687
 688 tcg_arch = host_arch
 689 if get_option('tcg').allowed()
 690   if host_arch == 'unknown'
 691     if get_option('tcg_interpreter')
 692       warning('Unsupported CPU @0@, will use TCG with TCI (slow)'.format(cpu))
 693     else
 694       error('Unsupported CPU @0@, try --enable-tcg-interpreter'.format(cpu))
 695     endif
 696   elif get_option('tcg_interpreter')
 697     warning('Use of the TCG interpreter is not recommended on this host')
 698     warning('architecture. There is a native TCG execution backend available')
 699     warning('which provides substantially better performance and reliability.')
 700     warning('It is strongly recommended to remove the --enable-tcg-interpreter')
 701     warning('configuration option on this architecture to use the native')
 702     warning('backend.')
 703   endif
 704   if get_option('tcg_interpreter')
 705     tcg_arch = 'tci'
 706     config_host += { 'CONFIG_TCG_INTERPRETER': 'y' }
 707   elif host_arch == 'x86_64'
 708     tcg_arch = 'i386'
 709   elif host_arch == 'ppc64'
 710     tcg_arch = 'ppc'
 711   endif
 712   add_project_arguments('-iquote', meson.current_source_dir() / 'tcg' / tcg_arch,
 713                         language: all_languages)
 714
 715   accelerators += 'CONFIG_TCG'
 716   config_host += { 'CONFIG_TCG': 'y' }
 717 endif
 718
 719 if 'CONFIG_KVM' not in accelerators and get_option('kvm').enabled()
 720   error('KVM not available on this platform')
 721 endif
 722 if 'CONFIG_HVF' not in accelerators and get_option('hvf').enabled()
 723   error('HVF not available on this platform')
 724 endif
 725 if 'CONFIG_NVMM' not in accelerators and get_option('nvmm').enabled()
 726   error('NVMM not available on this platform')
 727 endif
 728 if 'CONFIG_WHPX' not in accelerators and get_option('whpx').enabled()
 729   error('WHPX not available on this platform')
 730 endif
 731
 732 ################
 733 # Dependencies #
 734 ################
 735
 736 # When bumping glib minimum version, please check also whether to increase
 737 # the _WIN32_WINNT setting in osdep.h according to the value from glib
 738 glib_req_ver = '>=2.56.0'
 739 glib_pc = dependency('glib-2.0', version: glib_req_ver, required: true,
 740                     method: 'pkg-config')
 741 glib_cflags = []
 742 if enable_modules
 743   gmodule = dependency('gmodule-export-2.0', version: glib_req_ver, required: true,
 744                        method: 'pkg-config')
 745 elif config_host.has_key('CONFIG_PLUGIN')
 746   gmodule = dependency('gmodule-no-export-2.0', version: glib_req_ver, required: true,
 747                        method: 'pkg-config')
 748 else
 749   gmodule = not_found
 750 endif
 751
 752 # This workaround is required due to a bug in pkg-config file for glib as it
 753 # doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
 754 if targetos == 'windows' and get_option('prefer_static')
 755   glib_cflags += ['-DGLIB_STATIC_COMPILATION']
 756 endif
 757
 758 # Sanity check that the current size_t matches the
 759 # size that glib thinks it should be. This catches
 760 # problems on multi-arch where people try to build
 761 # 32-bit QEMU while pointing at 64-bit glib headers
 762
 763 if not cc.compiles('''
 764   #include <glib.h>
 765   #include <unistd.h>
 766
 767   #define QEMU_BUILD_BUG_ON(x) \
 768   typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
 769
 770   int main(void) {
 771      QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
 772      return 0;
 773   }''', dependencies: glib_pc, args: glib_cflags)
 774   error('''sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T.
 775         You probably need to set PKG_CONFIG_LIBDIR" to point
 776         to the right pkg-config files for your build target.''')
 777 endif
 778
 779 # Silence clang warnings triggered by glib < 2.57.2
 780 if not cc.compiles('''
 781   #include <glib.h>
 782   typedef struct Foo {
 783     int i;
 784   } Foo;
 785   static void foo_free(Foo *f)
 786   {
 787     g_free(f);
 788   }
 789   G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free)
 790   int main(void) { return 0; }''', dependencies: glib_pc, args: ['-Wunused-function', '-Werror'])
 791   glib_cflags += cc.get_supported_arguments('-Wno-unused-function')
 792 endif
 793 glib = declare_dependency(dependencies: [glib_pc, gmodule],
 794                           compile_args: glib_cflags,
 795                           version: glib_pc.version())
 796
 797 # Check whether glib has gslice, which we have to avoid for correctness.
 798 # TODO: remove this check and the corresponding workaround (qtree) when
 799 # the minimum supported glib is >= 2.75.3
 800 glib_has_gslice = glib.version().version_compare('<2.75.3')
 801
 802 # override glib dep to include the above refinements
 803 meson.override_dependency('glib-2.0', glib)
 804
 805 # The path to glib.h is added to all compilation commands.
 806 add_project_dependencies(glib.partial_dependency(compile_args: true, includes: true),
 807                          native: false, language: all_languages)
 808
 809 gio = not_found
 810 gdbus_codegen = not_found
 811 gdbus_codegen_error = '@0@ requires gdbus-codegen, please install libgio'
 812 if not get_option('gio').auto() or have_system
 813   gio = dependency('gio-2.0', required: get_option('gio'),
 814                    method: 'pkg-config')
 815   if gio.found() and not cc.links('''
 816     #include <gio/gio.h>
 817     int main(void)
 818     {
 819       g_dbus_proxy_new_sync(0, 0, 0, 0, 0, 0, 0, 0);
 820       return 0;
 821     }''', dependencies: [glib, gio])
 822     if get_option('gio').enabled()
 823       error('The installed libgio is broken for static linking')
 824     endif
 825     gio = not_found
 826   endif
 827   if gio.found()
 828     gdbus_codegen = find_program(gio.get_variable('gdbus_codegen'),
 829                                  required: get_option('gio'))
 830     gio_unix = dependency('gio-unix-2.0', required: get_option('gio'),
 831                           method: 'pkg-config')
 832     gio = declare_dependency(dependencies: [gio, gio_unix],
 833                              version: gio.version())
 834   endif
 835 endif
 836 if gdbus_codegen.found() and get_option('cfi')
 837   gdbus_codegen = not_found
 838   gdbus_codegen_error = '@0@ uses gdbus-codegen, which does not support control flow integrity'
 839 endif
 840
 841 lttng = not_found
 842 if 'ust' in get_option('trace_backends')
 843   lttng = dependency('lttng-ust', required: true, version: '>= 2.1',
 844                      method: 'pkg-config')
 845 endif
 846 pixman = not_found
 847 if have_system or have_tools
 848   pixman = dependency('pixman-1', required: have_system, version:'>=0.21.8',
 849                       method: 'pkg-config')
 850 endif
 851 zlib = dependency('zlib', required: true)
 852
 853 libaio = not_found
 854 if not get_option('linux_aio').auto() or have_block
 855   libaio = cc.find_library('aio', has_headers: ['libaio.h'],
 856                            required: get_option('linux_aio'))
 857 endif
 858
 859 linux_io_uring_test = '''
 860   #include <liburing.h>
 861   #include <linux/errqueue.h>
 862
 863   int main(void) { return 0; }'''
 864
 865 linux_io_uring = not_found
 866 if not get_option('linux_io_uring').auto() or have_block
 867   linux_io_uring = dependency('liburing', version: '>=0.3',
 868                               required: get_option('linux_io_uring'),
 869                               method: 'pkg-config')
 870   if not cc.links(linux_io_uring_test)
 871     linux_io_uring = not_found
 872   endif
 873 endif
 874
 875 libnfs = not_found
 876 if not get_option('libnfs').auto() or have_block
 877   libnfs = dependency('libnfs', version: '>=1.9.3',
 878                       required: get_option('libnfs'),
 879                       method: 'pkg-config')
 880 endif
 881
 882 libattr_test = '''
 883   #include <stddef.h>
 884   #include <sys/types.h>
 885   #ifdef CONFIG_LIBATTR
 886   #include <attr/xattr.h>
 887   #else
 888   #include <sys/xattr.h>
 889   #endif
 890   int main(void) { getxattr(NULL, NULL, NULL, 0); setxattr(NULL, NULL, NULL, 0, 0); return 0; }'''
 891
 892 libattr = not_found
 893 have_old_libattr = false
 894 if get_option('attr').allowed()
 895   if cc.links(libattr_test)
 896     libattr = declare_dependency()
 897   else
 898     libattr = cc.find_library('attr', has_headers: ['attr/xattr.h'],
 899                               required: get_option('attr'))
 900     if libattr.found() and not \
 901       cc.links(libattr_test, dependencies: libattr, args: '-DCONFIG_LIBATTR')
 902       libattr = not_found
 903       if get_option('attr').enabled()
 904         error('could not link libattr')
 905       else
 906         warning('could not link libattr, disabling')
 907       endif
 908     else
 909       have_old_libattr = libattr.found()
 910     endif
 911   endif
 912 endif
 913
 914 cocoa = dependency('appleframeworks', modules: ['Cocoa', 'CoreVideo'],
 915                    required: get_option('cocoa'))
 916
 917 vmnet = dependency('appleframeworks', modules: 'vmnet', required: get_option('vmnet'))
 918 if vmnet.found() and not cc.has_header_symbol('vmnet/vmnet.h',
 919                                               'VMNET_BRIDGED_MODE',
 920                                               dependencies: vmnet)
 921   vmnet = not_found
 922   if get_option('vmnet').enabled()
 923     error('vmnet.framework API is outdated')
 924   else
 925     warning('vmnet.framework API is outdated, disabling')
 926   endif
 927 endif
 928
 929 seccomp = not_found
 930 seccomp_has_sysrawrc = false
 931 if not get_option('seccomp').auto() or have_system or have_tools
 932   seccomp = dependency('libseccomp', version: '>=2.3.0',
 933                        required: get_option('seccomp'),
 934                        method: 'pkg-config')
 935   if seccomp.found()
 936     seccomp_has_sysrawrc = cc.has_header_symbol('seccomp.h',
 937                                                 'SCMP_FLTATR_API_SYSRAWRC',
 938                                                 dependencies: seccomp)
 939   endif
 940 endif
 941
 942 libcap_ng = not_found
 943 if not get_option('cap_ng').auto() or have_system or have_tools
 944   libcap_ng = cc.find_library('cap-ng', has_headers: ['cap-ng.h'],
 945                               required: get_option('cap_ng'))
 946 endif
 947 if libcap_ng.found() and not cc.links('''
 948    #include <cap-ng.h>
 949    int main(void)
 950    {
 951      capng_capability_to_name(CAPNG_EFFECTIVE);
 952      return 0;
 953    }''', dependencies: libcap_ng)
 954   libcap_ng = not_found
 955   if get_option('cap_ng').enabled()
 956     error('could not link libcap-ng')
 957   else
 958     warning('could not link libcap-ng, disabling')
 959   endif
 960 endif
 961
 962 if get_option('xkbcommon').auto() and not have_system and not have_tools
 963   xkbcommon = not_found
 964 else
 965   xkbcommon = dependency('xkbcommon', required: get_option('xkbcommon'),
 966                          method: 'pkg-config')
 967 endif
 968
 969 slirp = not_found
 970 if not get_option('slirp').auto() or have_system
 971   slirp = dependency('slirp', required: get_option('slirp'),
 972                      method: 'pkg-config')
 973   # slirp < 4.7 is incompatible with CFI support in QEMU.  This is because
 974   # it passes function pointers within libslirp as callbacks for timers.
 975   # When using a system-wide shared libslirp, the type information for the
 976   # callback is missing and the timer call produces a false positive with CFI.
 977   # Do not use the "version" keyword argument to produce a better error.
 978   # with control-flow integrity.
 979   if get_option('cfi') and slirp.found() and slirp.version().version_compare('<4.7')
 980     if get_option('slirp').enabled()
 981       error('Control-Flow Integrity requires libslirp 4.7.')
 982     else
 983       warning('Cannot use libslirp since Control-Flow Integrity requires libslirp >= 4.7.')
 984       slirp = not_found
 985     endif
 986   endif
 987 endif
 988
 989 vde = not_found
 990 if not get_option('vde').auto() or have_system or have_tools
 991   vde = cc.find_library('vdeplug', has_headers: ['libvdeplug.h'],
 992                            required: get_option('vde'))
 993 endif
 994 if vde.found() and not cc.links('''
 995    #include <libvdeplug.h>
 996    int main(void)
 997    {
 998      struct vde_open_args a = {0, 0, 0};
 999      char s[] = "";
1000      vde_open(s, s, &a);
1001      return 0;
1002    }''', dependencies: vde)
1003   vde = not_found
1004   if get_option('cap_ng').enabled()
1005     error('could not link libvdeplug')
1006   else
1007     warning('could not link libvdeplug, disabling')
1008   endif
1009 endif
1010
1011 pulse = not_found
1012 if not get_option('pa').auto() or (targetos == 'linux' and have_system)
1013   pulse = dependency('libpulse', required: get_option('pa'),
1014                      method: 'pkg-config')
1015 endif
1016 alsa = not_found
1017 if not get_option('alsa').auto() or (targetos == 'linux' and have_system)
1018   alsa = dependency('alsa', required: get_option('alsa'),
1019                     method: 'pkg-config')
1020 endif
1021 jack = not_found
1022 if not get_option('jack').auto() or have_system
1023   jack = dependency('jack', required: get_option('jack'),
1024                     method: 'pkg-config')
1025 endif
1026 pipewire = not_found
1027 if not get_option('pipewire').auto() or (targetos == 'linux' and have_system)
1028   pipewire = dependency('libpipewire-0.3', version: '>=0.3.60',
1029                     required: get_option('pipewire'),
1030                     method: 'pkg-config')
1031 endif
1032 sndio = not_found
1033 if not get_option('sndio').auto() or have_system
1034   sndio = dependency('sndio', required: get_option('sndio'),
1035                     method: 'pkg-config')
1036 endif
1037
1038 spice_protocol = not_found
1039 if not get_option('spice_protocol').auto() or have_system
1040   spice_protocol = dependency('spice-protocol', version: '>=0.14.0',
1041                               required: get_option('spice_protocol'),
1042                               method: 'pkg-config')
1043 endif
1044 spice = not_found
1045 if not get_option('spice').auto() or have_system
1046   spice = dependency('spice-server', version: '>=0.14.0',
1047                      required: get_option('spice'),
1048                      method: 'pkg-config')
1049 endif
1050 spice_headers = spice.partial_dependency(compile_args: true, includes: true)
1051
1052 rt = cc.find_library('rt', required: false)
1053
1054 libiscsi = not_found
1055 if not get_option('libiscsi').auto() or have_block
1056   libiscsi = dependency('libiscsi', version: '>=1.9.0',
1057                          required: get_option('libiscsi'),
1058                          method: 'pkg-config')
1059 endif
1060 zstd = not_found
1061 if not get_option('zstd').auto() or have_block
1062   zstd = dependency('libzstd', version: '>=1.4.0',
1063                     required: get_option('zstd'),
1064                     method: 'pkg-config')
1065 endif
1066 virgl = not_found
1067
1068 have_vhost_user_gpu = have_tools and targetos == 'linux' and pixman.found()
1069 if not get_option('virglrenderer').auto() or have_system or have_vhost_user_gpu
1070   virgl = dependency('virglrenderer',
1071                      method: 'pkg-config',
1072                      required: get_option('virglrenderer'))
1073 endif
1074 blkio = not_found
1075 if not get_option('blkio').auto() or have_block
1076   blkio = dependency('blkio',
1077                      method: 'pkg-config',
1078                      required: get_option('blkio'))
1079 endif
1080 curl = not_found
1081 if not get_option('curl').auto() or have_block
1082   curl = dependency('libcurl', version: '>=7.29.0',
1083                     method: 'pkg-config',
1084                     required: get_option('curl'))
1085 endif
1086 libudev = not_found
1087 if targetos == 'linux' and (have_system or have_tools)
1088   libudev = dependency('libudev',
1089                        method: 'pkg-config',
1090                        required: get_option('libudev'))
1091 endif
1092
1093 mpathlibs = [libudev]
1094 mpathpersist = not_found
1095 if targetos == 'linux' and have_tools and get_option('mpath').allowed()
1096   mpath_test_source = '''
1097     #include <libudev.h>
1098     #include <mpath_persist.h>
1099     unsigned mpath_mx_alloc_len = 1024;
1100     int logsink;
1101     static struct config *multipath_conf;
1102     extern struct udev *udev;
1103     extern struct config *get_multipath_config(void);
1104     extern void put_multipath_config(struct config *conf);
1105     struct udev *udev;
1106     struct config *get_multipath_config(void) { return multipath_conf; }
1107     void put_multipath_config(struct config *conf) { }
1108     int main(void) {
1109         udev = udev_new();
1110         multipath_conf = mpath_lib_init();
1111         return 0;
1112     }'''
1113   libmpathpersist = cc.find_library('mpathpersist',
1114                                     required: get_option('mpath'))
1115   if libmpathpersist.found()
1116     mpathlibs += libmpathpersist
1117     if get_option('prefer_static')
1118       mpathlibs += cc.find_library('devmapper',
1119                                      required: get_option('mpath'))
1120     endif
1121     mpathlibs += cc.find_library('multipath',
1122                                  required: get_option('mpath'))
1123     foreach lib: mpathlibs
1124       if not lib.found()
1125         mpathlibs = []
1126         break
1127       endif
1128     endforeach
1129     if mpathlibs.length() == 0
1130       msg = 'Dependencies missing for libmpathpersist'
1131     elif cc.links(mpath_test_source, dependencies: mpathlibs)
1132       mpathpersist = declare_dependency(dependencies: mpathlibs)
1133     else
1134       msg = 'Cannot detect libmpathpersist API'
1135     endif
1136     if not mpathpersist.found()
1137       if get_option('mpath').enabled()
1138         error(msg)
1139       else
1140         warning(msg + ', disabling')
1141       endif
1142     endif
1143   endif
1144 endif
1145
1146 iconv = not_found
1147 curses = not_found
1148 if have_system and get_option('curses').allowed()
1149   curses_test = '''
1150     #if defined(__APPLE__) || defined(__OpenBSD__)
1151     #define _XOPEN_SOURCE_EXTENDED 1
1152     #endif
1153     #include <locale.h>
1154     #include <curses.h>
1155     #include <wchar.h>
1156     int main(void) {
1157       wchar_t wch = L'w';
1158       setlocale(LC_ALL, "");
1159       resize_term(0, 0);
1160       addwstr(L"wide chars\n");
1161       addnwstr(&wch, 1);
1162       add_wch(WACS_DEGREE);
1163       return 0;
1164     }'''
1165
1166   curses_dep_list = targetos == 'windows' ? ['ncurses', 'ncursesw'] : ['ncursesw']
1167   curses = dependency(curses_dep_list,
1168                       required: false,
1169                       method: 'pkg-config')
1170   msg = get_option('curses').enabled() ? 'curses library not found' : ''
1171   curses_compile_args = ['-DNCURSES_WIDECHAR=1']
1172   if curses.found()
1173     if cc.links(curses_test, args: curses_compile_args, dependencies: [curses])
1174       curses = declare_dependency(compile_args: curses_compile_args, dependencies: [curses],
1175                                   version: curses.version())
1176     else
1177       msg = 'curses package not usable'
1178       curses = not_found
1179     endif
1180   endif
1181   if not curses.found()
1182     has_curses_h = cc.has_header('curses.h', args: curses_compile_args)
1183     if targetos != 'windows' and not has_curses_h
1184       message('Trying with /usr/include/ncursesw')
1185       curses_compile_args += ['-I/usr/include/ncursesw']
1186       has_curses_h = cc.has_header('curses.h', args: curses_compile_args)
1187     endif
1188     if has_curses_h
1189       curses_libname_list = (targetos == 'windows' ? ['pdcurses'] : ['ncursesw', 'cursesw'])
1190       foreach curses_libname : curses_libname_list
1191         libcurses = cc.find_library(curses_libname,
1192                                     required: false)
1193         if libcurses.found()
1194           if cc.links(curses_test, args: curses_compile_args, dependencies: libcurses)
1195             curses = declare_dependency(compile_args: curses_compile_args,
1196                                         dependencies: [libcurses])
1197             break
1198           else
1199             msg = 'curses library not usable'
1200           endif
1201         endif
1202       endforeach
1203     endif
1204   endif
1205   if get_option('iconv').allowed()
1206     foreach link_args : [ ['-liconv'], [] ]
1207       # Programs will be linked with glib and this will bring in libiconv on FreeBSD.
1208       # We need to use libiconv if available because mixing libiconv's headers with
1209       # the system libc does not work.
1210       # However, without adding glib to the dependencies -L/usr/local/lib will not be
1211       # included in the command line and libiconv will not be found.
1212       if cc.links('''
1213         #include <iconv.h>
1214         int main(void) {
1215           iconv_t conv = iconv_open("WCHAR_T", "UCS-2");
1216           return conv != (iconv_t) -1;
1217         }''', args: link_args, dependencies: glib)
1218         iconv = declare_dependency(link_args: link_args, dependencies: glib)
1219         break
1220       endif
1221     endforeach
1222   endif
1223   if curses.found() and not iconv.found()
1224     if get_option('iconv').enabled()
1225       error('iconv not available')
1226     endif
1227     msg = 'iconv required for curses UI but not available'
1228     curses = not_found
1229   endif
1230   if not curses.found() and msg != ''
1231     if get_option('curses').enabled()
1232       error(msg)
1233     else
1234       warning(msg + ', disabling')
1235     endif
1236   endif
1237 endif
1238
1239 brlapi = not_found
1240 if not get_option('brlapi').auto() or have_system
1241   brlapi = cc.find_library('brlapi', has_headers: ['brlapi.h'],
1242                          required: get_option('brlapi'))
1243   if brlapi.found() and not cc.links('''
1244      #include <brlapi.h>
1245      #include <stddef.h>
1246      int main(void) { return brlapi__openConnection (NULL, NULL, NULL); }''', dependencies: brlapi)
1247     brlapi = not_found
1248     if get_option('brlapi').enabled()
1249       error('could not link brlapi')
1250     else
1251       warning('could not link brlapi, disabling')
1252     endif
1253   endif
1254 endif
1255
1256 sdl = not_found
1257 if not get_option('sdl').auto() or have_system
1258   sdl = dependency('sdl2', required: get_option('sdl'))
1259   sdl_image = not_found
1260 endif
1261 if sdl.found()
1262   # Some versions of SDL have problems with -Wundef
1263   if not cc.compiles('''
1264                      #include <SDL.h>
1265                      #include <SDL_syswm.h>
1266                      int main(int argc, char *argv[]) { return 0; }
1267                      ''', dependencies: sdl, args: '-Werror=undef')
1268     sdl = declare_dependency(compile_args: '-Wno-undef',
1269                              dependencies: sdl,
1270                              version: sdl.version())
1271   endif
1272   sdl_image = dependency('SDL2_image', required: get_option('sdl_image'),
1273                          method: 'pkg-config')
1274 else
1275   if get_option('sdl_image').enabled()
1276     error('sdl-image required, but SDL was @0@'.format(
1277           get_option('sdl').disabled() ? 'disabled' : 'not found'))
1278   endif
1279   sdl_image = not_found
1280 endif
1281
1282 rbd = not_found
1283 if not get_option('rbd').auto() or have_block
1284   librados = cc.find_library('rados', required: get_option('rbd'))
1285   librbd = cc.find_library('rbd', has_headers: ['rbd/librbd.h'],
1286                            required: get_option('rbd'))
1287   if librados.found() and librbd.found()
1288     if cc.links('''
1289       #include <stdio.h>
1290       #include <rbd/librbd.h>
1291       int main(void) {
1292         rados_t cluster;
1293         rados_create(&cluster, NULL);
1294         #if LIBRBD_VERSION_CODE < LIBRBD_VERSION(1, 12, 0)
1295         #error
1296         #endif
1297         return 0;
1298       }''', dependencies: [librbd, librados])
1299       rbd = declare_dependency(dependencies: [librbd, librados])
1300     elif get_option('rbd').enabled()
1301       error('librbd >= 1.12.0 required')
1302     else
1303       warning('librbd >= 1.12.0 not found, disabling')
1304     endif
1305   endif
1306 endif
1307
1308 glusterfs = not_found
1309 glusterfs_ftruncate_has_stat = false
1310 glusterfs_iocb_has_stat = false
1311 if not get_option('glusterfs').auto() or have_block
1312   glusterfs = dependency('glusterfs-api', version: '>=3',
1313                          required: get_option('glusterfs'),
1314                          method: 'pkg-config')
1315   if glusterfs.found()
1316     glusterfs_ftruncate_has_stat = cc.links('''
1317       #include <glusterfs/api/glfs.h>
1318
1319       int
1320       main(void)
1321       {
1322           /* new glfs_ftruncate() passes two additional args */
1323           return glfs_ftruncate(NULL, 0, NULL, NULL);
1324       }
1325     ''', dependencies: glusterfs)
1326     glusterfs_iocb_has_stat = cc.links('''
1327       #include <glusterfs/api/glfs.h>
1328
1329       /* new glfs_io_cbk() passes two additional glfs_stat structs */
1330       static void
1331       glusterfs_iocb(glfs_fd_t *fd, ssize_t ret, struct glfs_stat *prestat, struct glfs_stat *poststat, void *data)
1332       {}
1333
1334       int
1335       main(void)
1336       {
1337           glfs_io_cbk iocb = &glusterfs_iocb;
1338           iocb(NULL, 0 , NULL, NULL, NULL);
1339           return 0;
1340       }
1341     ''', dependencies: glusterfs)
1342   endif
1343 endif
1344
1345 libssh = not_found
1346 if not get_option('libssh').auto() or have_block
1347   libssh = dependency('libssh', version: '>=0.8.7',
1348                     method: 'pkg-config',
1349                     required: get_option('libssh'))
1350 endif
1351
1352 libbzip2 = not_found
1353 if not get_option('bzip2').auto() or have_block
1354   libbzip2 = cc.find_library('bz2', has_headers: ['bzlib.h'],
1355                              required: get_option('bzip2'))
1356   if libbzip2.found() and not cc.links('''
1357      #include <bzlib.h>
1358      int main(void) { BZ2_bzlibVersion(); return 0; }''', dependencies: libbzip2)
1359     libbzip2 = not_found
1360     if get_option('bzip2').enabled()
1361       error('could not link libbzip2')
1362     else
1363       warning('could not link libbzip2, disabling')
1364     endif
1365   endif
1366 endif
1367
1368 liblzfse = not_found
1369 if not get_option('lzfse').auto() or have_block
1370   liblzfse = cc.find_library('lzfse', has_headers: ['lzfse.h'],
1371                              required: get_option('lzfse'))
1372 endif
1373 if liblzfse.found() and not cc.links('''
1374    #include <lzfse.h>
1375    int main(void) { lzfse_decode_scratch_size(); return 0; }''', dependencies: liblzfse)
1376   liblzfse = not_found
1377   if get_option('lzfse').enabled()
1378     error('could not link liblzfse')
1379   else
1380     warning('could not link liblzfse, disabling')
1381   endif
1382 endif
1383
1384 oss = not_found
1385 if get_option('oss').allowed() and have_system
1386   if not cc.has_header('sys/soundcard.h')
1387     # not found
1388   elif targetos == 'netbsd'
1389     oss = cc.find_library('ossaudio', required: get_option('oss'))
1390   else
1391     oss = declare_dependency()
1392   endif
1393
1394   if not oss.found()
1395     if get_option('oss').enabled()
1396       error('OSS not found')
1397     endif
1398   endif
1399 endif
1400 dsound = not_found
1401 if not get_option('dsound').auto() or (targetos == 'windows' and have_system)
1402   if cc.has_header('dsound.h')
1403     dsound = declare_dependency(link_args: ['-lole32', '-ldxguid'])
1404   endif
1405
1406   if not dsound.found()
1407     if get_option('dsound').enabled()
1408       error('DirectSound not found')
1409     endif
1410   endif
1411 endif
1412
1413 coreaudio = not_found
1414 if not get_option('coreaudio').auto() or (targetos == 'darwin' and have_system)
1415   coreaudio = dependency('appleframeworks', modules: 'CoreAudio',
1416                          required: get_option('coreaudio'))
1417 endif
1418
1419 opengl = not_found
1420 if not get_option('opengl').auto() or have_system or have_vhost_user_gpu
1421   epoxy = dependency('epoxy', method: 'pkg-config',
1422                       required: get_option('opengl'))
1423   if cc.has_header('epoxy/egl.h', dependencies: epoxy)
1424     opengl = epoxy
1425   elif get_option('opengl').enabled()
1426     error('epoxy/egl.h not found')
1427   endif
1428 endif
1429 gbm = not_found
1430 if (have_system or have_tools) and (virgl.found() or opengl.found())
1431   gbm = dependency('gbm', method: 'pkg-config', required: false)
1432 endif
1433 have_vhost_user_gpu = have_vhost_user_gpu and virgl.found() and opengl.found() and gbm.found()
1434
1435 gnutls = not_found
1436 gnutls_crypto = not_found
1437 if get_option('gnutls').enabled() or (get_option('gnutls').auto() and have_system)
1438   # For general TLS support our min gnutls matches
1439   # that implied by our platform support matrix
1440   #
1441   # For the crypto backends, we look for a newer
1442   # gnutls:
1443   #
1444   #   Version 3.6.8  is needed to get XTS
1445   #   Version 3.6.13 is needed to get PBKDF
1446   #   Version 3.6.14 is needed to get HW accelerated XTS
1447   #
1448   # If newer enough gnutls isn't available, we can
1449   # still use a different crypto backend to satisfy
1450   # the platform support requirements
1451   gnutls_crypto = dependency('gnutls', version: '>=3.6.14',
1452                              method: 'pkg-config',
1453                              required: false)
1454   if gnutls_crypto.found()
1455     gnutls = gnutls_crypto
1456   else
1457     # Our min version if all we need is TLS
1458     gnutls = dependency('gnutls', version: '>=3.5.18',
1459                         method: 'pkg-config',
1460                         required: get_option('gnutls'))
1461   endif
1462 endif
1463
1464 # We prefer use of gnutls for crypto, unless the options
1465 # explicitly asked for nettle or gcrypt.
1466 #
1467 # If gnutls isn't available for crypto, then we'll prefer
1468 # gcrypt over nettle for performance reasons.
1469 gcrypt = not_found
1470 nettle = not_found
1471 hogweed = not_found
1472 xts = 'none'
1473
1474 if get_option('nettle').enabled() and get_option('gcrypt').enabled()
1475   error('Only one of gcrypt & nettle can be enabled')
1476 endif
1477
1478 # Explicit nettle/gcrypt request, so ignore gnutls for crypto
1479 if get_option('nettle').enabled() or get_option('gcrypt').enabled()
1480   gnutls_crypto = not_found
1481 endif
1482
1483 if not gnutls_crypto.found()
1484   if (not get_option('gcrypt').auto() or have_system) and not get_option('nettle').enabled()
1485     gcrypt = dependency('libgcrypt', version: '>=1.8',
1486                         method: 'config-tool',
1487                         required: get_option('gcrypt'))
1488     # Debian has removed -lgpg-error from libgcrypt-config
1489     # as it "spreads unnecessary dependencies" which in
1490     # turn breaks static builds...
1491     if gcrypt.found() and get_option('prefer_static')
1492       gcrypt = declare_dependency(dependencies:
1493         [gcrypt,
1494          cc.find_library('gpg-error', required: true)],
1495         version: gcrypt.version())
1496     endif
1497   endif
1498   if (not get_option('nettle').auto() or have_system) and not gcrypt.found()
1499     nettle = dependency('nettle', version: '>=3.4',
1500                         method: 'pkg-config',
1501                         required: get_option('nettle'))
1502     if nettle.found() and not cc.has_header('nettle/xts.h', dependencies: nettle)
1503       xts = 'private'
1504     endif
1505   endif
1506 endif
1507
1508 gmp = dependency('gmp', required: false, method: 'pkg-config')
1509 if nettle.found() and gmp.found()
1510   hogweed = dependency('hogweed', version: '>=3.4',
1511                        method: 'pkg-config',
1512                        required: get_option('nettle'))
1513 endif
1514
1515
1516 gtk = not_found
1517 gtkx11 = not_found
1518 vte = not_found
1519 have_gtk_clipboard = get_option('gtk_clipboard').enabled()
1520
1521 if not get_option('gtk').auto() or have_system
1522   gtk = dependency('gtk+-3.0', version: '>=3.22.0',
1523                    method: 'pkg-config',
1524                    required: get_option('gtk'))
1525   if gtk.found()
1526     gtkx11 = dependency('gtk+-x11-3.0', version: '>=3.22.0',
1527                         method: 'pkg-config',
1528                         required: false)
1529     gtk = declare_dependency(dependencies: [gtk, gtkx11],
1530                              version: gtk.version())
1531
1532     if not get_option('vte').auto() or have_system
1533       vte = dependency('vte-2.91',
1534                        method: 'pkg-config',
1535                        required: get_option('vte'))
1536     endif
1537   elif have_gtk_clipboard
1538     error('GTK clipboard requested, but GTK not found')
1539   endif
1540 endif
1541
1542 x11 = not_found
1543 if gtkx11.found()
1544   x11 = dependency('x11', method: 'pkg-config', required: gtkx11.found())
1545 endif
1546 png = not_found
1547 if get_option('png').allowed() and have_system
1548    png = dependency('libpng', version: '>=1.6.34', required: get_option('png'),
1549                     method: 'pkg-config')
1550 endif
1551 vnc = not_found
1552 jpeg = not_found
1553 sasl = not_found
1554 if get_option('vnc').allowed() and have_system
1555   vnc = declare_dependency() # dummy dependency
1556   jpeg = dependency('libjpeg', required: get_option('vnc_jpeg'),
1557                     method: 'pkg-config')
1558   sasl = cc.find_library('sasl2', has_headers: ['sasl/sasl.h'],
1559                          required: get_option('vnc_sasl'))
1560   if sasl.found()
1561     sasl = declare_dependency(dependencies: sasl,
1562                               compile_args: '-DSTRUCT_IOVEC_DEFINED')
1563   endif
1564 endif
1565
1566 pam = not_found
1567 if not get_option('auth_pam').auto() or have_system
1568   pam = cc.find_library('pam', has_headers: ['security/pam_appl.h'],
1569                         required: get_option('auth_pam'))
1570 endif
1571 if pam.found() and not cc.links('''
1572    #include <stddef.h>
1573    #include <security/pam_appl.h>
1574    int main(void) {
1575      const char *service_name = "qemu";
1576      const char *user = "frank";
1577      const struct pam_conv pam_conv = { 0 };
1578      pam_handle_t *pamh = NULL;
1579      pam_start(service_name, user, &pam_conv, &pamh);
1580      return 0;
1581    }''', dependencies: pam)
1582   pam = not_found
1583   if get_option('auth_pam').enabled()
1584     error('could not link libpam')
1585   else
1586     warning('could not link libpam, disabling')
1587   endif
1588 endif
1589
1590 snappy = not_found
1591 if not get_option('snappy').auto() or have_system
1592   snappy = cc.find_library('snappy', has_headers: ['snappy-c.h'],
1593                            required: get_option('snappy'))
1594 endif
1595 if snappy.found() and not linker.links('''
1596    #include <snappy-c.h>
1597    int main(void) { snappy_max_compressed_length(4096); return 0; }''', dependencies: snappy)
1598   snappy = not_found
1599   if get_option('snappy').enabled()
1600     error('could not link libsnappy')
1601   else
1602     warning('could not link libsnappy, disabling')
1603   endif
1604 endif
1605
1606 lzo = not_found
1607 if not get_option('lzo').auto() or have_system
1608   lzo = cc.find_library('lzo2', has_headers: ['lzo/lzo1x.h'],
1609                         required: get_option('lzo'))
1610 endif
1611 if lzo.found() and not cc.links('''
1612    #include <lzo/lzo1x.h>
1613    int main(void) { lzo_version(); return 0; }''', dependencies: lzo)
1614   lzo = not_found
1615   if get_option('lzo').enabled()
1616     error('could not link liblzo2')
1617   else
1618     warning('could not link liblzo2, disabling')
1619   endif
1620 endif
1621
1622 numa = not_found
1623 if not get_option('numa').auto() or have_system or have_tools
1624   numa = cc.find_library('numa', has_headers: ['numa.h'],
1625                               required: get_option('numa'))
1626 endif
1627 if numa.found() and not cc.links('''
1628    #include <numa.h>
1629    int main(void) { return numa_available(); }
1630    ''', dependencies: numa)
1631   numa = not_found
1632   if get_option('numa').enabled()
1633     error('could not link numa')
1634   else
1635     warning('could not link numa, disabling')
1636   endif
1637 endif
1638
1639 rdma = not_found
1640 if not get_option('rdma').auto() or have_system
1641   libumad = cc.find_library('ibumad', required: get_option('rdma'))
1642   rdma_libs = [cc.find_library('rdmacm', has_headers: ['rdma/rdma_cma.h'],
1643                                required: get_option('rdma')),
1644                cc.find_library('ibverbs', required: get_option('rdma')),
1645                libumad]
1646   rdma = declare_dependency(dependencies: rdma_libs)
1647   foreach lib: rdma_libs
1648     if not lib.found()
1649       rdma = not_found
1650     endif
1651   endforeach
1652 endif
1653
1654 xen = not_found
1655 if get_option('xen').enabled() or (get_option('xen').auto() and have_system)
1656   xencontrol = dependency('xencontrol', required: false,
1657                           method: 'pkg-config')
1658   if xencontrol.found()
1659     xen_pc = declare_dependency(version: xencontrol.version(),
1660       dependencies: [
1661         xencontrol,
1662         # disabler: true makes xen_pc.found() return false if any is not found
1663         dependency('xenstore', required: false,
1664                    method: 'pkg-config',
1665                    disabler: true),
1666         dependency('xenforeignmemory', required: false,
1667                    method: 'pkg-config',
1668                    disabler: true),
1669         dependency('xengnttab', required: false,
1670                    method: 'pkg-config',
1671                    disabler: true),
1672         dependency('xenevtchn', required: false,
1673                    method: 'pkg-config',
1674                    disabler: true),
1675         dependency('xendevicemodel', required: false,
1676                    method: 'pkg-config',
1677                    disabler: true),
1678         # optional, no "disabler: true"
1679         dependency('xentoolcore', required: false,
1680                    method: 'pkg-config')])
1681     if xen_pc.found()
1682       xen = xen_pc
1683     endif
1684   endif
1685   if not xen.found()
1686     xen_tests = [ '4.11.0', '4.10.0', '4.9.0', '4.8.0', '4.7.1' ]
1687     xen_libs = {
1688       '4.11.0': [ 'xenstore', 'xenctrl', 'xendevicemodel', 'xenforeignmemory', 'xengnttab', 'xenevtchn', 'xentoolcore' ],
1689       '4.10.0': [ 'xenstore', 'xenctrl', 'xendevicemodel', 'xenforeignmemory', 'xengnttab', 'xenevtchn', 'xentoolcore' ],
1690       '4.9.0': [ 'xenstore', 'xenctrl', 'xendevicemodel', 'xenforeignmemory', 'xengnttab', 'xenevtchn' ],
1691       '4.8.0': [ 'xenstore', 'xenctrl', 'xenforeignmemory', 'xengnttab', 'xenevtchn' ],
1692       '4.7.1': [ 'xenstore', 'xenctrl', 'xenforeignmemory', 'xengnttab', 'xenevtchn' ],
1693     }
1694     xen_deps = {}
1695     foreach ver: xen_tests
1696       # cache the various library tests to avoid polluting the logs
1697       xen_test_deps = []
1698       foreach l: xen_libs[ver]
1699         if l not in xen_deps
1700           xen_deps += { l: cc.find_library(l, required: false) }
1701         endif
1702         xen_test_deps += xen_deps[l]
1703       endforeach
1704
1705       # Use -D to pick just one of the test programs in scripts/xen-detect.c
1706       xen_version = ver.split('.')
1707       xen_ctrl_version = xen_version[0] + \
1708         ('0' + xen_version[1]).substring(-2) + \
1709         ('0' + xen_version[2]).substring(-2)
1710       if cc.links(files('scripts/xen-detect.c'),
1711                   args: '-DCONFIG_XEN_CTRL_INTERFACE_VERSION=' + xen_ctrl_version,
1712                   dependencies: xen_test_deps)
1713         xen = declare_dependency(version: ver, dependencies: xen_test_deps)
1714         break
1715       endif
1716     endforeach
1717   endif
1718   if xen.found()
1719     accelerators += 'CONFIG_XEN'
1720   elif get_option('xen').enabled()
1721     error('could not compile and link Xen test program')
1722   endif
1723 endif
1724 have_xen_pci_passthrough = get_option('xen_pci_passthrough') \
1725   .require(xen.found(),
1726            error_message: 'Xen PCI passthrough requested but Xen not enabled') \
1727   .require(targetos == 'linux',
1728            error_message: 'Xen PCI passthrough not available on this platform') \
1729   .require(cpu == 'x86'  or cpu == 'x86_64',
1730            error_message: 'Xen PCI passthrough not available on this platform') \
1731   .allowed()
1732
1733
1734 cacard = not_found
1735 if not get_option('smartcard').auto() or have_system
1736   cacard = dependency('libcacard', required: get_option('smartcard'),
1737                       version: '>=2.5.1', method: 'pkg-config')
1738 endif
1739 u2f = not_found
1740 if have_system
1741   u2f = dependency('u2f-emu', required: get_option('u2f'),
1742                    method: 'pkg-config')
1743 endif
1744 canokey = not_found
1745 if have_system
1746   canokey = dependency('canokey-qemu', required: get_option('canokey'),
1747                    method: 'pkg-config')
1748 endif
1749 usbredir = not_found
1750 if not get_option('usb_redir').auto() or have_system
1751   usbredir = dependency('libusbredirparser-0.5', required: get_option('usb_redir'),
1752                         version: '>=0.6', method: 'pkg-config')
1753 endif
1754 libusb = not_found
1755 if not get_option('libusb').auto() or have_system
1756   libusb = dependency('libusb-1.0', required: get_option('libusb'),
1757                       version: '>=1.0.13', method: 'pkg-config')
1758 endif
1759
1760 libpmem = not_found
1761 if not get_option('libpmem').auto() or have_system
1762   libpmem = dependency('libpmem', required: get_option('libpmem'),
1763                        method: 'pkg-config')
1764 endif
1765 libdaxctl = not_found
1766 if not get_option('libdaxctl').auto() or have_system
1767   libdaxctl = dependency('libdaxctl', required: get_option('libdaxctl'),
1768                          version: '>=57', method: 'pkg-config')
1769 endif
1770 tasn1 = not_found
1771 if gnutls.found()
1772   tasn1 = dependency('libtasn1',
1773                      method: 'pkg-config')
1774 endif
1775 keyutils = not_found
1776 if get_option('keyring').enabled()
1777   keyutils = dependency('libkeyutils', required: false, method: 'pkg-config')
1778 endif
1779
1780 has_gettid = cc.has_function('gettid')
1781
1782 # libselinux
1783 selinux = dependency('libselinux',
1784                      required: get_option('selinux'),
1785                      method: 'pkg-config')
1786
1787 # Malloc tests
1788
1789 malloc = []
1790 if get_option('malloc') == 'system'
1791   has_malloc_trim = \
1792     get_option('malloc_trim').allowed() and \
1793     cc.has_function('malloc_trim', prefix: '#include <malloc.h>')
1794 else
1795   has_malloc_trim = false
1796   malloc = cc.find_library(get_option('malloc'), required: true)
1797 endif
1798 if not has_malloc_trim and get_option('malloc_trim').enabled()
1799   if get_option('malloc') == 'system'
1800     error('malloc_trim not available on this platform.')
1801   else
1802     error('malloc_trim not available with non-libc memory allocator')
1803   endif
1804 endif
1805
1806 gnu_source_prefix = '''
1807   #ifndef _GNU_SOURCE
1808   #define _GNU_SOURCE
1809   #endif
1810 '''
1811
1812 # Check whether the glibc provides STATX_BASIC_STATS
1813
1814 has_statx = cc.has_header_symbol('sys/stat.h', 'STATX_BASIC_STATS', prefix: gnu_source_prefix)
1815
1816 # Check whether statx() provides mount ID information
1817
1818 has_statx_mnt_id = cc.has_header_symbol('sys/stat.h', 'STATX_MNT_ID', prefix: gnu_source_prefix)
1819
1820 have_vhost_user_blk_server = get_option('vhost_user_blk_server') \
1821   .require(targetos == 'linux',
1822            error_message: 'vhost_user_blk_server requires linux') \
1823   .require(have_vhost_user,
1824            error_message: 'vhost_user_blk_server requires vhost-user support') \
1825   .disable_auto_if(not have_tools and not have_system) \
1826   .allowed()
1827
1828 if get_option('fuse').disabled() and get_option('fuse_lseek').enabled()
1829   error('Cannot enable fuse-lseek while fuse is disabled')
1830 endif
1831
1832 fuse = dependency('fuse3', required: get_option('fuse'),
1833                   version: '>=3.1', method: 'pkg-config')
1834
1835 fuse_lseek = not_found
1836 if get_option('fuse_lseek').allowed()
1837   if fuse.version().version_compare('>=3.8')
1838     # Dummy dependency
1839     fuse_lseek = declare_dependency()
1840   elif get_option('fuse_lseek').enabled()
1841     if fuse.found()
1842       error('fuse-lseek requires libfuse >=3.8, found ' + fuse.version())
1843     else
1844       error('fuse-lseek requires libfuse, which was not found')
1845     endif
1846   endif
1847 endif
1848
1849 have_libvduse = (targetos == 'linux')
1850 if get_option('libvduse').enabled()
1851     if targetos != 'linux'
1852         error('libvduse requires linux')
1853     endif
1854 elif get_option('libvduse').disabled()
1855     have_libvduse = false
1856 endif
1857
1858 have_vduse_blk_export = (have_libvduse and targetos == 'linux')
1859 if get_option('vduse_blk_export').enabled()
1860     if targetos != 'linux'
1861         error('vduse_blk_export requires linux')
1862     elif not have_libvduse
1863         error('vduse_blk_export requires libvduse support')
1864     endif
1865 elif get_option('vduse_blk_export').disabled()
1866     have_vduse_blk_export = false
1867 endif
1868
1869 # libbpf
1870 libbpf = dependency('libbpf', required: get_option('bpf'), method: 'pkg-config')
1871 if libbpf.found() and not cc.links('''
1872    #include <bpf/libbpf.h>
1873    int main(void)
1874    {
1875      bpf_object__destroy_skeleton(NULL);
1876      return 0;
1877    }''', dependencies: libbpf)
1878   libbpf = not_found
1879   if get_option('bpf').enabled()
1880     error('libbpf skeleton test failed')
1881   else
1882     warning('libbpf skeleton test failed, disabling')
1883   endif
1884 endif
1885
1886 # libdw
1887 libdw = not_found
1888 if not get_option('libdw').auto() or \
1889         (not get_option('prefer_static') and (have_system or have_user))
1890     libdw = dependency('libdw',
1891                        method: 'pkg-config',
1892                        required: get_option('libdw'))
1893 endif
1894
1895 #################
1896 # config-host.h #
1897 #################
1898
1899 audio_drivers_selected = []
1900 if have_system
1901   audio_drivers_available = {
1902     'alsa': alsa.found(),
1903     'coreaudio': coreaudio.found(),
1904     'dsound': dsound.found(),
1905     'jack': jack.found(),
1906     'oss': oss.found(),
1907     'pa': pulse.found(),
1908     'pipewire': pipewire.found(),
1909     'sdl': sdl.found(),
1910     'sndio': sndio.found(),
1911   }
1912   foreach k, v: audio_drivers_available
1913     config_host_data.set('CONFIG_AUDIO_' + k.to_upper(), v)
1914   endforeach
1915
1916   # Default to native drivers first, OSS second, SDL third
1917   audio_drivers_priority = \
1918     [ 'pa', 'coreaudio', 'dsound', 'sndio', 'oss' ] + \
1919     (targetos == 'linux' ? [] : [ 'sdl' ])
1920   audio_drivers_default = []
1921   foreach k: audio_drivers_priority
1922     if audio_drivers_available[k]
1923       audio_drivers_default += k
1924     endif
1925   endforeach
1926
1927   foreach k: get_option('audio_drv_list')
1928     if k == 'default'
1929       audio_drivers_selected += audio_drivers_default
1930     elif not audio_drivers_available[k]
1931       error('Audio driver "@0@" not available.'.format(k))
1932     else
1933       audio_drivers_selected += k
1934     endif
1935   endforeach
1936 endif
1937 config_host_data.set('CONFIG_AUDIO_DRIVERS',
1938                      '"' + '", "'.join(audio_drivers_selected) + '", ')
1939
1940 if get_option('cfi')
1941   cfi_flags=[]
1942   # Check for dependency on LTO
1943   if not get_option('b_lto')
1944     error('Selected Control-Flow Integrity but LTO is disabled')
1945   endif
1946   if enable_modules
1947     error('Selected Control-Flow Integrity is not compatible with modules')
1948   endif
1949   # Check for cfi flags. CFI requires LTO so we can't use
1950   # get_supported_arguments, but need a more complex "compiles" which allows
1951   # custom arguments
1952   if cc.compiles('int main () { return 0; }', name: '-fsanitize=cfi-icall',
1953                  args: ['-flto', '-fsanitize=cfi-icall'] )
1954     cfi_flags += '-fsanitize=cfi-icall'
1955   else
1956     error('-fsanitize=cfi-icall is not supported by the compiler')
1957   endif
1958   if cc.compiles('int main () { return 0; }',
1959                  name: '-fsanitize-cfi-icall-generalize-pointers',
1960                  args: ['-flto', '-fsanitize=cfi-icall',
1961                         '-fsanitize-cfi-icall-generalize-pointers'] )
1962     cfi_flags += '-fsanitize-cfi-icall-generalize-pointers'
1963   else
1964     error('-fsanitize-cfi-icall-generalize-pointers is not supported by the compiler')
1965   endif
1966   if get_option('cfi_debug')
1967     if cc.compiles('int main () { return 0; }',
1968                    name: '-fno-sanitize-trap=cfi-icall',
1969                    args: ['-flto', '-fsanitize=cfi-icall',
1970                           '-fno-sanitize-trap=cfi-icall'] )
1971       cfi_flags += '-fno-sanitize-trap=cfi-icall'
1972     else
1973       error('-fno-sanitize-trap=cfi-icall is not supported by the compiler')
1974     endif
1975   endif
1976   add_global_arguments(cfi_flags, native: false, language: all_languages)
1977   add_global_link_arguments(cfi_flags, native: false, language: all_languages)
1978 endif
1979
1980 have_host_block_device = (targetos != 'darwin' or
1981     cc.has_header('IOKit/storage/IOMedia.h'))
1982
1983 dbus_display = get_option('dbus_display') \
1984   .require(gio.version().version_compare('>=2.64'),
1985            error_message: '-display dbus requires glib>=2.64') \
1986   .require(gdbus_codegen.found(),
1987            error_message: gdbus_codegen_error.format('-display dbus')) \
1988   .require(targetos != 'windows',
1989            error_message: '-display dbus is not available on Windows') \
1990   .allowed()
1991
1992 have_virtfs = get_option('virtfs') \
1993     .require(targetos == 'linux' or targetos == 'darwin',
1994              error_message: 'virtio-9p (virtfs) requires Linux or macOS') \
1995     .require(targetos == 'linux' or cc.has_function('pthread_fchdir_np'),
1996              error_message: 'virtio-9p (virtfs) on macOS requires the presence of pthread_fchdir_np') \
1997     .require(targetos == 'darwin' or libattr.found(),
1998              error_message: 'virtio-9p (virtfs) on Linux requires libattr-devel') \
1999     .disable_auto_if(not have_tools and not have_system) \
2000     .allowed()
2001
2002 have_virtfs_proxy_helper = get_option('virtfs_proxy_helper') \
2003     .require(targetos != 'darwin', error_message: 'the virtfs proxy helper is incompatible with macOS') \
2004     .require(have_virtfs, error_message: 'the virtfs proxy helper requires that virtfs is enabled') \
2005     .disable_auto_if(not have_tools) \
2006     .require(libcap_ng.found(), error_message: 'the virtfs proxy helper requires libcap-ng') \
2007     .allowed()
2008
2009 if get_option('block_drv_ro_whitelist') == ''
2010   config_host_data.set('CONFIG_BDRV_RO_WHITELIST', '')
2011 else
2012   config_host_data.set('CONFIG_BDRV_RO_WHITELIST',
2013         '"' + get_option('block_drv_ro_whitelist').replace(',', '", "') + '", ')
2014 endif
2015 if get_option('block_drv_rw_whitelist') == ''
2016   config_host_data.set('CONFIG_BDRV_RW_WHITELIST', '')
2017 else
2018   config_host_data.set('CONFIG_BDRV_RW_WHITELIST',
2019         '"' + get_option('block_drv_rw_whitelist').replace(',', '", "') + '", ')
2020 endif
2021
2022 foreach k : get_option('trace_backends')
2023   config_host_data.set('CONFIG_TRACE_' + k.to_upper(), true)
2024 endforeach
2025 config_host_data.set_quoted('CONFIG_TRACE_FILE', get_option('trace_file'))
2026 config_host_data.set_quoted('CONFIG_TLS_PRIORITY', get_option('tls_priority'))
2027 if iasl.found()
2028   config_host_data.set_quoted('CONFIG_IASL', iasl.full_path())
2029 endif
2030 config_host_data.set_quoted('CONFIG_BINDIR', get_option('prefix') / get_option('bindir'))
2031 config_host_data.set_quoted('CONFIG_PREFIX', get_option('prefix'))
2032 config_host_data.set_quoted('CONFIG_QEMU_CONFDIR', get_option('prefix') / qemu_confdir)
2033 config_host_data.set_quoted('CONFIG_QEMU_DATADIR', get_option('prefix') / qemu_datadir)
2034 config_host_data.set_quoted('CONFIG_QEMU_DESKTOPDIR', get_option('prefix') / qemu_desktopdir)
2035
2036 qemu_firmwarepath = ''
2037 foreach k : get_option('qemu_firmwarepath')
2038   qemu_firmwarepath += '"' + get_option('prefix') / k + '", '
2039 endforeach
2040 config_host_data.set('CONFIG_QEMU_FIRMWAREPATH', qemu_firmwarepath)
2041
2042 config_host_data.set_quoted('CONFIG_QEMU_HELPERDIR', get_option('prefix') / get_option('libexecdir'))
2043 config_host_data.set_quoted('CONFIG_QEMU_ICONDIR', get_option('prefix') / qemu_icondir)
2044 config_host_data.set_quoted('CONFIG_QEMU_LOCALEDIR', get_option('prefix') / get_option('localedir'))
2045 config_host_data.set_quoted('CONFIG_QEMU_LOCALSTATEDIR', get_option('prefix') / get_option('localstatedir'))
2046 config_host_data.set_quoted('CONFIG_QEMU_MODDIR', get_option('prefix') / qemu_moddir)
2047 config_host_data.set_quoted('CONFIG_SYSCONFDIR', get_option('prefix') / get_option('sysconfdir'))
2048
2049 if enable_modules
2050   config_host_data.set('CONFIG_STAMP', run_command(
2051       meson.current_source_dir() / 'scripts/qemu-stamp.py',
2052       meson.project_version(), get_option('pkgversion'), '--',
2053       meson.current_source_dir() / 'configure',
2054       capture: true, check: true).stdout().strip())
2055 endif
2056
2057 have_slirp_smbd = get_option('slirp_smbd') \
2058   .require(targetos != 'windows', error_message: 'Host smbd not supported on this platform.') \
2059   .allowed()
2060 if have_slirp_smbd
2061   smbd_path = get_option('smbd')
2062   if smbd_path == ''
2063     smbd_path = (targetos == 'solaris' ? '/usr/sfw/sbin/smbd' : '/usr/sbin/smbd')
2064   endif
2065   config_host_data.set_quoted('CONFIG_SMBD_COMMAND', smbd_path)
2066 endif
2067
2068 config_host_data.set('HOST_' + host_arch.to_upper(), 1)
2069
2070 if get_option('module_upgrades') and not enable_modules
2071   error('Cannot enable module-upgrades as modules are not enabled')
2072 endif
2073 config_host_data.set('CONFIG_MODULE_UPGRADES', get_option('module_upgrades'))
2074
2075 config_host_data.set('CONFIG_ATTR', libattr.found())
2076 config_host_data.set('CONFIG_BDRV_WHITELIST_TOOLS', get_option('block_drv_whitelist_in_tools'))
2077 config_host_data.set('CONFIG_BRLAPI', brlapi.found())
2078 config_host_data.set('CONFIG_COCOA', cocoa.found())
2079 config_host_data.set('CONFIG_FUZZ', get_option('fuzzing'))
2080 config_host_data.set('CONFIG_GCOV', get_option('b_coverage'))
2081 config_host_data.set('CONFIG_LIBUDEV', libudev.found())
2082 config_host_data.set('CONFIG_LZO', lzo.found())
2083 config_host_data.set('CONFIG_MPATH', mpathpersist.found())
2084 config_host_data.set('CONFIG_BLKIO', blkio.found())
2085 if blkio.found()
2086   config_host_data.set('CONFIG_BLKIO_VHOST_VDPA_FD',
2087                        blkio.version().version_compare('>=1.3.0'))
2088 endif
2089 config_host_data.set('CONFIG_CURL', curl.found())
2090 config_host_data.set('CONFIG_CURSES', curses.found())
2091 config_host_data.set('CONFIG_GBM', gbm.found())
2092 config_host_data.set('CONFIG_GIO', gio.found())
2093 config_host_data.set('CONFIG_GLUSTERFS', glusterfs.found())
2094 if glusterfs.found()
2095   config_host_data.set('CONFIG_GLUSTERFS_XLATOR_OPT', glusterfs.version().version_compare('>=4'))
2096   config_host_data.set('CONFIG_GLUSTERFS_DISCARD', glusterfs.version().version_compare('>=5'))
2097   config_host_data.set('CONFIG_GLUSTERFS_FALLOCATE', glusterfs.version().version_compare('>=6'))
2098   config_host_data.set('CONFIG_GLUSTERFS_ZEROFILL', glusterfs.version().version_compare('>=6'))
2099   config_host_data.set('CONFIG_GLUSTERFS_FTRUNCATE_HAS_STAT', glusterfs_ftruncate_has_stat)
2100   config_host_data.set('CONFIG_GLUSTERFS_IOCB_HAS_STAT', glusterfs_iocb_has_stat)
2101 endif
2102 config_host_data.set('CONFIG_GTK', gtk.found())
2103 config_host_data.set('CONFIG_VTE', vte.found())
2104 config_host_data.set('CONFIG_GTK_CLIPBOARD', have_gtk_clipboard)
2105 config_host_data.set('CONFIG_HEXAGON_IDEF_PARSER', get_option('hexagon_idef_parser'))
2106 config_host_data.set('CONFIG_LIBATTR', have_old_libattr)
2107 config_host_data.set('CONFIG_LIBCAP_NG', libcap_ng.found())
2108 config_host_data.set('CONFIG_EBPF', libbpf.found())
2109 config_host_data.set('CONFIG_LIBDAXCTL', libdaxctl.found())
2110 config_host_data.set('CONFIG_LIBISCSI', libiscsi.found())
2111 config_host_data.set('CONFIG_LIBNFS', libnfs.found())
2112 config_host_data.set('CONFIG_LIBSSH', libssh.found())
2113 config_host_data.set('CONFIG_LINUX_AIO', libaio.found())
2114 config_host_data.set('CONFIG_LINUX_IO_URING', linux_io_uring.found())
2115 config_host_data.set('CONFIG_LIBPMEM', libpmem.found())
2116 config_host_data.set('CONFIG_MODULES', enable_modules)
2117 config_host_data.set('CONFIG_NUMA', numa.found())
2118 if numa.found()
2119   config_host_data.set('HAVE_NUMA_HAS_PREFERRED_MANY',
2120                        cc.has_function('numa_has_preferred_many',
2121                                        dependencies: numa))
2122 endif
2123 config_host_data.set('CONFIG_OPENGL', opengl.found())
2124 config_host_data.set('CONFIG_PROFILER', get_option('profiler'))
2125 config_host_data.set('CONFIG_RBD', rbd.found())
2126 config_host_data.set('CONFIG_RDMA', rdma.found())
2127 config_host_data.set('CONFIG_SAFESTACK', get_option('safe_stack'))
2128 config_host_data.set('CONFIG_SDL', sdl.found())
2129 config_host_data.set('CONFIG_SDL_IMAGE', sdl_image.found())
2130 config_host_data.set('CONFIG_SECCOMP', seccomp.found())
2131 if seccomp.found()
2132   config_host_data.set('CONFIG_SECCOMP_SYSRAWRC', seccomp_has_sysrawrc)
2133 endif
2134 config_host_data.set('CONFIG_SNAPPY', snappy.found())
2135 config_host_data.set('CONFIG_TPM', have_tpm)
2136 config_host_data.set('CONFIG_TSAN', get_option('tsan'))
2137 config_host_data.set('CONFIG_USB_LIBUSB', libusb.found())
2138 config_host_data.set('CONFIG_VDE', vde.found())
2139 config_host_data.set('CONFIG_VHOST_NET', have_vhost_net)
2140 config_host_data.set('CONFIG_VHOST_NET_USER', have_vhost_net_user)
2141 config_host_data.set('CONFIG_VHOST_NET_VDPA', have_vhost_net_vdpa)
2142 config_host_data.set('CONFIG_VHOST_KERNEL', have_vhost_kernel)
2143 config_host_data.set('CONFIG_VHOST_USER', have_vhost_user)
2144 config_host_data.set('CONFIG_VHOST_CRYPTO', have_vhost_user_crypto)
2145 config_host_data.set('CONFIG_VHOST_VDPA', have_vhost_vdpa)
2146 config_host_data.set('CONFIG_VMNET', vmnet.found())
2147 config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER', have_vhost_user_blk_server)
2148 config_host_data.set('CONFIG_VDUSE_BLK_EXPORT', have_vduse_blk_export)
2149 config_host_data.set('CONFIG_PNG', png.found())
2150 config_host_data.set('CONFIG_VNC', vnc.found())
2151 config_host_data.set('CONFIG_VNC_JPEG', jpeg.found())
2152 config_host_data.set('CONFIG_VNC_SASL', sasl.found())
2153 config_host_data.set('CONFIG_VIRTFS', have_virtfs)
2154 config_host_data.set('CONFIG_VTE', vte.found())
2155 config_host_data.set('CONFIG_XKBCOMMON', xkbcommon.found())
2156 config_host_data.set('CONFIG_KEYUTILS', keyutils.found())
2157 config_host_data.set('CONFIG_GETTID', has_gettid)
2158 config_host_data.set('CONFIG_GNUTLS', gnutls.found())
2159 config_host_data.set('CONFIG_GNUTLS_CRYPTO', gnutls_crypto.found())
2160 config_host_data.set('CONFIG_TASN1', tasn1.found())
2161 config_host_data.set('CONFIG_GCRYPT', gcrypt.found())
2162 config_host_data.set('CONFIG_NETTLE', nettle.found())
2163 config_host_data.set('CONFIG_HOGWEED', hogweed.found())
2164 config_host_data.set('CONFIG_QEMU_PRIVATE_XTS', xts == 'private')
2165 config_host_data.set('CONFIG_MALLOC_TRIM', has_malloc_trim)
2166 config_host_data.set('CONFIG_STATX', has_statx)
2167 config_host_data.set('CONFIG_STATX_MNT_ID', has_statx_mnt_id)
2168 config_host_data.set('CONFIG_ZSTD', zstd.found())
2169 config_host_data.set('CONFIG_FUSE', fuse.found())
2170 config_host_data.set('CONFIG_FUSE_LSEEK', fuse_lseek.found())
2171 config_host_data.set('CONFIG_SPICE_PROTOCOL', spice_protocol.found())
2172 if spice_protocol.found()
2173 config_host_data.set('CONFIG_SPICE_PROTOCOL_MAJOR', spice_protocol.version().split('.')[0])
2174 config_host_data.set('CONFIG_SPICE_PROTOCOL_MINOR', spice_protocol.version().split('.')[1])
2175 config_host_data.set('CONFIG_SPICE_PROTOCOL_MICRO', spice_protocol.version().split('.')[2])
2176 endif
2177 config_host_data.set('CONFIG_SPICE', spice.found())
2178 config_host_data.set('CONFIG_X11', x11.found())
2179 config_host_data.set('CONFIG_DBUS_DISPLAY', dbus_display)
2180 config_host_data.set('CONFIG_CFI', get_option('cfi'))
2181 config_host_data.set('CONFIG_SELINUX', selinux.found())
2182 config_host_data.set('CONFIG_XEN_BACKEND', xen.found())
2183 config_host_data.set('CONFIG_LIBDW', libdw.found())
2184 if xen.found()
2185   # protect from xen.version() having less than three components
2186   xen_version = xen.version().split('.') + ['0', '0']
2187   xen_ctrl_version = xen_version[0] + \
2188     ('0' + xen_version[1]).substring(-2) + \
2189     ('0' + xen_version[2]).substring(-2)
2190   config_host_data.set('CONFIG_XEN_CTRL_INTERFACE_VERSION', xen_ctrl_version)
2191 endif
2192 config_host_data.set('QEMU_VERSION', '"@0@"'.format(meson.project_version()))
2193 config_host_data.set('QEMU_VERSION_MAJOR', meson.project_version().split('.')[0])
2194 config_host_data.set('QEMU_VERSION_MINOR', meson.project_version().split('.')[1])
2195 config_host_data.set('QEMU_VERSION_MICRO', meson.project_version().split('.')[2])
2196
2197 config_host_data.set_quoted('CONFIG_HOST_DSOSUF', host_dsosuf)
2198 config_host_data.set('HAVE_HOST_BLOCK_DEVICE', have_host_block_device)
2199
2200 have_coroutine_pool = get_option('coroutine_pool')
2201 if get_option('debug_stack_usage') and have_coroutine_pool
2202   message('Disabling coroutine pool to measure stack usage')
2203   have_coroutine_pool = false
2204 endif
2205 config_host_data.set10('CONFIG_COROUTINE_POOL', have_coroutine_pool)
2206 config_host_data.set('CONFIG_DEBUG_GRAPH_LOCK', get_option('debug_graph_lock'))
2207 config_host_data.set('CONFIG_DEBUG_MUTEX', get_option('debug_mutex'))
2208 config_host_data.set('CONFIG_DEBUG_STACK_USAGE', get_option('debug_stack_usage'))
2209 config_host_data.set('CONFIG_GPROF', get_option('gprof'))
2210 config_host_data.set('CONFIG_LIVE_BLOCK_MIGRATION', get_option('live_block_migration').allowed())
2211 config_host_data.set('CONFIG_QOM_CAST_DEBUG', get_option('qom_cast_debug'))
2212 config_host_data.set('CONFIG_REPLICATION', get_option('replication').allowed())
2213
2214 # has_header
2215 config_host_data.set('CONFIG_EPOLL', cc.has_header('sys/epoll.h'))
2216 config_host_data.set('CONFIG_LINUX_MAGIC_H', cc.has_header('linux/magic.h'))
2217 config_host_data.set('CONFIG_VALGRIND_H', cc.has_header('valgrind/valgrind.h'))
2218 config_host_data.set('HAVE_BTRFS_H', cc.has_header('linux/btrfs.h'))
2219 config_host_data.set('HAVE_DRM_H', cc.has_header('libdrm/drm.h'))
2220 config_host_data.set('HAVE_PTY_H', cc.has_header('pty.h'))
2221 config_host_data.set('HAVE_SYS_DISK_H', cc.has_header('sys/disk.h'))
2222 config_host_data.set('HAVE_SYS_IOCCOM_H', cc.has_header('sys/ioccom.h'))
2223 config_host_data.set('HAVE_SYS_KCOV_H', cc.has_header('sys/kcov.h'))
2224 if targetos == 'windows'
2225   config_host_data.set('HAVE_AFUNIX_H', cc.has_header('afunix.h'))
2226 endif
2227
2228 # has_function
2229 config_host_data.set('CONFIG_CLOSE_RANGE', cc.has_function('close_range'))
2230 config_host_data.set('CONFIG_ACCEPT4', cc.has_function('accept4'))
2231 config_host_data.set('CONFIG_CLOCK_ADJTIME', cc.has_function('clock_adjtime'))
2232 config_host_data.set('CONFIG_DUP3', cc.has_function('dup3'))
2233 config_host_data.set('CONFIG_FALLOCATE', cc.has_function('fallocate'))
2234 config_host_data.set('CONFIG_POSIX_FALLOCATE', cc.has_function('posix_fallocate'))
2235 # Note that we need to specify prefix: here to avoid incorrectly
2236 # thinking that Windows has posix_memalign()
2237 config_host_data.set('CONFIG_POSIX_MEMALIGN', cc.has_function('posix_memalign', prefix: '#include <stdlib.h>'))
2238 config_host_data.set('CONFIG_ALIGNED_MALLOC', cc.has_function('_aligned_malloc'))
2239 config_host_data.set('CONFIG_VALLOC', cc.has_function('valloc'))
2240 config_host_data.set('CONFIG_MEMALIGN', cc.has_function('memalign'))
2241 config_host_data.set('CONFIG_PPOLL', cc.has_function('ppoll'))
2242 config_host_data.set('CONFIG_PREADV', cc.has_function('preadv', prefix: '#include <sys/uio.h>'))
2243 config_host_data.set('CONFIG_PTHREAD_FCHDIR_NP', cc.has_function('pthread_fchdir_np'))
2244 config_host_data.set('CONFIG_SENDFILE', cc.has_function('sendfile'))
2245 config_host_data.set('CONFIG_SETNS', cc.has_function('setns') and cc.has_function('unshare'))
2246 config_host_data.set('CONFIG_SYNCFS', cc.has_function('syncfs'))
2247 config_host_data.set('CONFIG_SYNC_FILE_RANGE', cc.has_function('sync_file_range'))
2248 config_host_data.set('CONFIG_TIMERFD', cc.has_function('timerfd_create'))
2249 config_host_data.set('HAVE_COPY_FILE_RANGE', cc.has_function('copy_file_range'))
2250 config_host_data.set('HAVE_GETIFADDRS', cc.has_function('getifaddrs'))
2251 config_host_data.set('HAVE_GLIB_WITH_SLICE_ALLOCATOR', glib_has_gslice)
2252 config_host_data.set('HAVE_OPENPTY', cc.has_function('openpty', dependencies: util))
2253 config_host_data.set('HAVE_STRCHRNUL', cc.has_function('strchrnul'))
2254 config_host_data.set('HAVE_SYSTEM_FUNCTION', cc.has_function('system', prefix: '#include <stdlib.h>'))
2255 if rbd.found()
2256   config_host_data.set('HAVE_RBD_NAMESPACE_EXISTS',
2257                        cc.has_function('rbd_namespace_exists',
2258                                        dependencies: rbd,
2259                                        prefix: '#include <rbd/librbd.h>'))
2260 endif
2261 if rdma.found()
2262   config_host_data.set('HAVE_IBV_ADVISE_MR',
2263                        cc.has_function('ibv_advise_mr',
2264                                        dependencies: rdma,
2265                                        prefix: '#include <infiniband/verbs.h>'))
2266 endif
2267
2268 have_asan_fiber = false
2269 if get_option('sanitizers') and \
2270    not cc.has_function('__sanitizer_start_switch_fiber',
2271                          args: '-fsanitize=address',
2272                          prefix: '#include <sanitizer/asan_interface.h>')
2273   warning('Missing ASAN due to missing fiber annotation interface')
2274   warning('Without code annotation, the report may be inferior.')
2275 else
2276   have_asan_fiber = true
2277 endif
2278 config_host_data.set('CONFIG_ASAN_IFACE_FIBER', have_asan_fiber)
2279
2280 # has_header_symbol
2281 config_host_data.set('CONFIG_BLKZONED',
2282                      cc.has_header_symbol('linux/blkzoned.h', 'BLKOPENZONE'))
2283 config_host_data.set('CONFIG_EPOLL_CREATE1',
2284                      cc.has_header_symbol('sys/epoll.h', 'epoll_create1'))
2285 config_host_data.set('CONFIG_FALLOCATE_PUNCH_HOLE',
2286                      cc.has_header_symbol('linux/falloc.h', 'FALLOC_FL_PUNCH_HOLE') and
2287                      cc.has_header_symbol('linux/falloc.h', 'FALLOC_FL_KEEP_SIZE'))
2288 config_host_data.set('CONFIG_FALLOCATE_ZERO_RANGE',
2289                      cc.has_header_symbol('linux/falloc.h', 'FALLOC_FL_ZERO_RANGE'))
2290 config_host_data.set('CONFIG_FIEMAP',
2291                      cc.has_header('linux/fiemap.h') and
2292                      cc.has_header_symbol('linux/fs.h', 'FS_IOC_FIEMAP'))
2293 config_host_data.set('CONFIG_GETRANDOM',
2294                      cc.has_function('getrandom') and
2295                      cc.has_header_symbol('sys/random.h', 'GRND_NONBLOCK'))
2296 config_host_data.set('CONFIG_INOTIFY',
2297                      cc.has_header_symbol('sys/inotify.h', 'inotify_init'))
2298 config_host_data.set('CONFIG_INOTIFY1',
2299                      cc.has_header_symbol('sys/inotify.h', 'inotify_init1'))
2300 config_host_data.set('CONFIG_PRCTL_PR_SET_TIMERSLACK',
2301                      cc.has_header_symbol('sys/prctl.h', 'PR_SET_TIMERSLACK'))
2302 config_host_data.set('CONFIG_RTNETLINK',
2303                      cc.has_header_symbol('linux/rtnetlink.h', 'IFLA_PROTO_DOWN'))
2304 config_host_data.set('CONFIG_SYSMACROS',
2305                      cc.has_header_symbol('sys/sysmacros.h', 'makedev'))
2306 config_host_data.set('HAVE_OPTRESET',
2307                      cc.has_header_symbol('getopt.h', 'optreset'))
2308 config_host_data.set('HAVE_IPPROTO_MPTCP',
2309                      cc.has_header_symbol('netinet/in.h', 'IPPROTO_MPTCP'))
2310
2311 # has_member
2312 config_host_data.set('HAVE_SIGEV_NOTIFY_THREAD_ID',
2313                      cc.has_member('struct sigevent', 'sigev_notify_thread_id',
2314                                    prefix: '#include <signal.h>'))
2315 config_host_data.set('HAVE_STRUCT_STAT_ST_ATIM',
2316                      cc.has_member('struct stat', 'st_atim',
2317                                    prefix: '#include <sys/stat.h>'))
2318 config_host_data.set('HAVE_BLK_ZONE_REP_CAPACITY',
2319                      cc.has_member('struct blk_zone', 'capacity',
2320                                    prefix: '#include <linux/blkzoned.h>'))
2321
2322 # has_type
2323 config_host_data.set('CONFIG_IOVEC',
2324                      cc.has_type('struct iovec',
2325                                  prefix: '#include <sys/uio.h>'))
2326 config_host_data.set('HAVE_UTMPX',
2327                      cc.has_type('struct utmpx',
2328                                  prefix: '#include <utmpx.h>'))
2329
2330 config_host_data.set('CONFIG_EVENTFD', cc.links('''
2331   #include <sys/eventfd.h>
2332   int main(void) { return eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC); }'''))
2333 config_host_data.set('CONFIG_FDATASYNC', cc.links(gnu_source_prefix + '''
2334   #include <unistd.h>
2335   int main(void) {
2336   #if defined(_POSIX_SYNCHRONIZED_IO) && _POSIX_SYNCHRONIZED_IO > 0
2337   return fdatasync(0);
2338   #else
2339   #error Not supported
2340   #endif
2341   }'''))
2342
2343 has_madvise = cc.links(gnu_source_prefix + '''
2344   #include <sys/types.h>
2345   #include <sys/mman.h>
2346   #include <stddef.h>
2347   int main(void) { return madvise(NULL, 0, MADV_DONTNEED); }''')
2348 missing_madvise_proto = false
2349 if has_madvise
2350   # Some platforms (illumos and Solaris before Solaris 11) provide madvise()
2351   # but forget to prototype it. In this case, has_madvise will be true (the
2352   # test program links despite a compile warning). To detect the
2353   # missing-prototype case, we try again with a definitely-bogus prototype.
2354   # This will only compile if the system headers don't provide the prototype;
2355   # otherwise the conflicting prototypes will cause a compiler error.
2356   missing_madvise_proto = cc.links(gnu_source_prefix + '''
2357     #include <sys/types.h>
2358     #include <sys/mman.h>
2359     #include <stddef.h>
2360     extern int madvise(int);
2361     int main(void) { return madvise(0); }''')
2362 endif
2363 config_host_data.set('CONFIG_MADVISE', has_madvise)
2364 config_host_data.set('HAVE_MADVISE_WITHOUT_PROTOTYPE', missing_madvise_proto)
2365
2366 config_host_data.set('CONFIG_MEMFD', cc.links(gnu_source_prefix + '''
2367   #include <sys/mman.h>
2368   int main(void) { return memfd_create("foo", MFD_ALLOW_SEALING); }'''))
2369 config_host_data.set('CONFIG_OPEN_BY_HANDLE', cc.links(gnu_source_prefix + '''
2370   #include <fcntl.h>
2371   #if !defined(AT_EMPTY_PATH)
2372   # error missing definition
2373   #else
2374   int main(void) { struct file_handle fh; return open_by_handle_at(0, &fh, 0); }
2375   #endif'''))
2376 config_host_data.set('CONFIG_POSIX_MADVISE', cc.links(gnu_source_prefix + '''
2377   #include <sys/mman.h>
2378   #include <stddef.h>
2379   int main(void) { return posix_madvise(NULL, 0, POSIX_MADV_DONTNEED); }'''))
2380
2381 config_host_data.set('CONFIG_PTHREAD_SETNAME_NP_W_TID', cc.links(gnu_source_prefix + '''
2382   #include <pthread.h>
2383
2384   static void *f(void *p) { return NULL; }
2385   int main(void)
2386   {
2387     pthread_t thread;
2388     pthread_create(&thread, 0, f, 0);
2389     pthread_setname_np(thread, "QEMU");
2390     return 0;
2391   }''', dependencies: threads))
2392 config_host_data.set('CONFIG_PTHREAD_SETNAME_NP_WO_TID', cc.links(gnu_source_prefix + '''
2393   #include <pthread.h>
2394
2395   static void *f(void *p) { pthread_setname_np("QEMU"); return NULL; }
2396   int main(void)
2397   {
2398     pthread_t thread;
2399     pthread_create(&thread, 0, f, 0);
2400     return 0;
2401   }''', dependencies: threads))
2402 config_host_data.set('CONFIG_PTHREAD_SET_NAME_NP', cc.links(gnu_source_prefix + '''
2403   #include <pthread.h>
2404   #include <pthread_np.h>
2405
2406   static void *f(void *p) { return NULL; }
2407   int main(void)
2408   {
2409     pthread_t thread;
2410     pthread_create(&thread, 0, f, 0);
2411     pthread_set_name_np(thread, "QEMU");
2412     return 0;
2413   }''', dependencies: threads))
2414 config_host_data.set('CONFIG_PTHREAD_CONDATTR_SETCLOCK', cc.links(gnu_source_prefix + '''
2415   #include <pthread.h>
2416   #include <time.h>
2417
2418   int main(void)
2419   {
2420     pthread_condattr_t attr
2421     pthread_condattr_init(&attr);
2422     pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
2423     return 0;
2424   }''', dependencies: threads))
2425 config_host_data.set('CONFIG_PTHREAD_AFFINITY_NP', cc.links(gnu_source_prefix + '''
2426   #include <pthread.h>
2427
2428   static void *f(void *p) { return NULL; }
2429   int main(void)
2430   {
2431     int setsize = CPU_ALLOC_SIZE(64);
2432     pthread_t thread;
2433     cpu_set_t *cpuset;
2434     pthread_create(&thread, 0, f, 0);
2435     cpuset = CPU_ALLOC(64);
2436     CPU_ZERO_S(setsize, cpuset);
2437     pthread_setaffinity_np(thread, setsize, cpuset);
2438     pthread_getaffinity_np(thread, setsize, cpuset);
2439     CPU_FREE(cpuset);
2440     return 0;
2441   }''', dependencies: threads))
2442 config_host_data.set('CONFIG_SIGNALFD', cc.links(gnu_source_prefix + '''
2443   #include <sys/signalfd.h>
2444   #include <stddef.h>
2445   int main(void) { return signalfd(-1, NULL, SFD_CLOEXEC); }'''))
2446 config_host_data.set('CONFIG_SPLICE', cc.links(gnu_source_prefix + '''
2447   #include <unistd.h>
2448   #include <fcntl.h>
2449   #include <limits.h>
2450
2451   int main(void)
2452   {
2453     int len, fd = 0;
2454     len = tee(STDIN_FILENO, STDOUT_FILENO, INT_MAX, SPLICE_F_NONBLOCK);
2455     splice(STDIN_FILENO, NULL, fd, NULL, len, SPLICE_F_MOVE);
2456     return 0;
2457   }'''))
2458
2459 config_host_data.set('HAVE_MLOCKALL', cc.links(gnu_source_prefix + '''
2460   #include <sys/mman.h>
2461   int main(void) {
2462     return mlockall(MCL_FUTURE);
2463   }'''))
2464
2465 have_l2tpv3 = false
2466 if get_option('l2tpv3').allowed() and have_system
2467   have_l2tpv3 = cc.has_type('struct mmsghdr',
2468     prefix: gnu_source_prefix + '''
2469       #include <sys/socket.h>
2470       #include <linux/ip.h>''')
2471 endif
2472 config_host_data.set('CONFIG_L2TPV3', have_l2tpv3)
2473
2474 have_netmap = false
2475 if get_option('netmap').allowed() and have_system
2476   have_netmap = cc.compiles('''
2477     #include <inttypes.h>
2478     #include <net/if.h>
2479     #include <net/netmap.h>
2480     #include <net/netmap_user.h>
2481     #if (NETMAP_API < 11) || (NETMAP_API > 15)
2482     #error
2483     #endif
2484     int main(void) { return 0; }''')
2485   if not have_netmap and get_option('netmap').enabled()
2486     error('Netmap headers not available')
2487   endif
2488 endif
2489 config_host_data.set('CONFIG_NETMAP', have_netmap)
2490
2491 # Work around a system header bug with some kernel/XFS header
2492 # versions where they both try to define 'struct fsxattr':
2493 # xfs headers will not try to redefine structs from linux headers
2494 # if this macro is set.
2495 config_host_data.set('HAVE_FSXATTR', cc.links('''
2496   #include <linux/fs.h>
2497   struct fsxattr foo;
2498   int main(void) {
2499     return 0;
2500   }'''))
2501
2502 # Some versions of Mac OS X incorrectly define SIZE_MAX
2503 config_host_data.set('HAVE_BROKEN_SIZE_MAX', not cc.compiles('''
2504     #include <stdint.h>
2505     #include <stdio.h>
2506     int main(void) {
2507         return printf("%zu", SIZE_MAX);
2508     }''', args: ['-Werror']))
2509
2510 # See if 64-bit atomic operations are supported.
2511 # Note that without __atomic builtins, we can only
2512 # assume atomic loads/stores max at pointer size.
2513 config_host_data.set('CONFIG_ATOMIC64', cc.links('''
2514   #include <stdint.h>
2515   int main(void)
2516   {
2517     uint64_t x = 0, y = 0;
2518     y = __atomic_load_n(&x, __ATOMIC_RELAXED);
2519     __atomic_store_n(&x, y, __ATOMIC_RELAXED);
2520     __atomic_compare_exchange_n(&x, &y, x, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
2521     __atomic_exchange_n(&x, y, __ATOMIC_RELAXED);
2522     __atomic_fetch_add(&x, y, __ATOMIC_RELAXED);
2523     return 0;
2524   }'''))
2525
2526 has_int128_type = cc.compiles('''
2527   __int128_t a;
2528   __uint128_t b;
2529   int main(void) { b = a; }''')
2530 config_host_data.set('CONFIG_INT128_TYPE', has_int128_type)
2531
2532 has_int128 = has_int128_type and cc.links('''
2533   __int128_t a;
2534   __uint128_t b;
2535   int main (void) {
2536     a = a + b;
2537     b = a * b;
2538     a = a * a;
2539     return 0;
2540   }''')
2541 config_host_data.set('CONFIG_INT128', has_int128)
2542
2543 if has_int128_type
2544   # "do we have 128-bit atomics which are handled inline and specifically not
2545   # via libatomic". The reason we can't use libatomic is documented in the
2546   # comment starting "GCC is a house divided" in include/qemu/atomic128.h.
2547   # We only care about these operations on 16-byte aligned pointers, so
2548   # force 16-byte alignment of the pointer, which may be greater than
2549   # __alignof(unsigned __int128) for the host.
2550   atomic_test_128 = '''
2551     int main(int ac, char **av) {
2552       __uint128_t *p = __builtin_assume_aligned(av[ac - 1], 16);
2553       p[1] = __atomic_load_n(&p[0], __ATOMIC_RELAXED);
2554       __atomic_store_n(&p[2], p[3], __ATOMIC_RELAXED);
2555       __atomic_compare_exchange_n(&p[4], &p[5], p[6], 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
2556       return 0;
2557     }'''
2558   has_atomic128 = cc.links(atomic_test_128)
2559
2560   config_host_data.set('CONFIG_ATOMIC128', has_atomic128)
2561
2562   if not has_atomic128
2563     # Even with __builtin_assume_aligned, the above test may have failed
2564     # without optimization enabled.  Try again with optimizations locally
2565     # enabled for the function.  See
2566     #   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107389
2567     has_atomic128_opt = cc.links('__attribute__((optimize("O1")))' + atomic_test_128)
2568     config_host_data.set('CONFIG_ATOMIC128_OPT', has_atomic128_opt)
2569
2570     if not has_atomic128_opt
2571       config_host_data.set('CONFIG_CMPXCHG128', cc.links('''
2572         int main(void)
2573         {
2574           __uint128_t x = 0, y = 0;
2575           __sync_val_compare_and_swap_16(&x, y, x);
2576           return 0;
2577         }
2578       '''))
2579     endif
2580   endif
2581 endif
2582
2583 config_host_data.set('CONFIG_GETAUXVAL', cc.links(gnu_source_prefix + '''
2584   #include <sys/auxv.h>
2585   int main(void) {
2586     return getauxval(AT_HWCAP) == 0;
2587   }'''))
2588
2589 config_host_data.set('CONFIG_USBFS', have_linux_user and cc.compiles('''
2590   #include <linux/usbdevice_fs.h>
2591
2592   #ifndef USBDEVFS_GET_CAPABILITIES
2593   #error "USBDEVFS_GET_CAPABILITIES undefined"
2594   #endif
2595
2596   #ifndef USBDEVFS_DISCONNECT_CLAIM
2597   #error "USBDEVFS_DISCONNECT_CLAIM undefined"
2598   #endif
2599
2600   int main(void) { return 0; }'''))
2601
2602 have_keyring = get_option('keyring') \
2603   .require(targetos == 'linux', error_message: 'keyring is only available on Linux') \
2604   .require(cc.compiles('''
2605     #include <errno.h>
2606     #include <asm/unistd.h>
2607     #include <linux/keyctl.h>
2608     #include <sys/syscall.h>
2609     #include <unistd.h>
2610     int main(void) {
2611         return syscall(__NR_keyctl, KEYCTL_READ, 0, NULL, NULL, 0);
2612     }'''), error_message: 'keyctl syscall not available on this system').allowed()
2613 config_host_data.set('CONFIG_SECRET_KEYRING', have_keyring)
2614
2615 have_cpuid_h = cc.links('''
2616   #include <cpuid.h>
2617   int main(void) {
2618     unsigned a, b, c, d;
2619     unsigned max = __get_cpuid_max(0, 0);
2620
2621     if (max >= 1) {
2622         __cpuid(1, a, b, c, d);
2623     }
2624
2625     if (max >= 7) {
2626         __cpuid_count(7, 0, a, b, c, d);
2627     }
2628
2629     return 0;
2630   }''')
2631 config_host_data.set('CONFIG_CPUID_H', have_cpuid_h)
2632
2633 config_host_data.set('CONFIG_AVX2_OPT', get_option('avx2') \
2634   .require(have_cpuid_h, error_message: 'cpuid.h not available, cannot enable AVX2') \
2635   .require(cc.links('''
2636     #include <cpuid.h>
2637     #include <immintrin.h>
2638     static int __attribute__((target("avx2"))) bar(void *a) {
2639       __m256i x = *(__m256i *)a;
2640       return _mm256_testz_si256(x, x);
2641     }
2642     int main(int argc, char *argv[]) { return bar(argv[argc - 1]); }
2643   '''), error_message: 'AVX2 not available').allowed())
2644
2645 config_host_data.set('CONFIG_AVX512F_OPT', get_option('avx512f') \
2646   .require(have_cpuid_h, error_message: 'cpuid.h not available, cannot enable AVX512F') \
2647   .require(cc.links('''
2648     #include <cpuid.h>
2649     #include <immintrin.h>
2650     static int __attribute__((target("avx512f"))) bar(void *a) {
2651       __m512i x = *(__m512i *)a;
2652       return _mm512_test_epi64_mask(x, x);
2653     }
2654     int main(int argc, char *argv[]) { return bar(argv[argc - 1]); }
2655   '''), error_message: 'AVX512F not available').allowed())
2656
2657 config_host_data.set('CONFIG_AVX512BW_OPT', get_option('avx512bw') \
2658   .require(have_cpuid_h, error_message: 'cpuid.h not available, cannot enable AVX512BW') \
2659   .require(cc.links('''
2660     #include <cpuid.h>
2661     #include <immintrin.h>
2662     static int __attribute__((target("avx512bw"))) bar(void *a) {
2663       __m512i *x = a;
2664       __m512i res= _mm512_abs_epi8(*x);
2665       return res[1];
2666     }
2667     int main(int argc, char *argv[]) { return bar(argv[0]); }
2668   '''), error_message: 'AVX512BW not available').allowed())
2669
2670 have_pvrdma = get_option('pvrdma') \
2671   .require(rdma.found(), error_message: 'PVRDMA requires OpenFabrics libraries') \
2672   .require(cc.compiles(gnu_source_prefix + '''
2673     #include <sys/mman.h>
2674     int main(void)
2675     {
2676       char buf = 0;
2677       void *addr = &buf;
2678       addr = mremap(addr, 0, 1, MREMAP_MAYMOVE | MREMAP_FIXED);
2679
2680       return 0;
2681     }'''), error_message: 'PVRDMA requires mremap').allowed()
2682
2683 if have_pvrdma
2684   config_host_data.set('LEGACY_RDMA_REG_MR', not cc.links('''
2685     #include <infiniband/verbs.h>
2686     int main(void)
2687     {
2688       struct ibv_mr *mr;
2689       struct ibv_pd *pd = NULL;
2690       size_t length = 10;
2691       uint64_t iova = 0;
2692       int access = 0;
2693       void *addr = NULL;
2694
2695       mr = ibv_reg_mr_iova(pd, addr, length, iova, access);
2696       ibv_dereg_mr(mr);
2697       return 0;
2698     }'''))
2699 endif
2700
2701 if get_option('membarrier').disabled()
2702   have_membarrier = false
2703 elif targetos == 'windows'
2704   have_membarrier = true
2705 elif targetos == 'linux'
2706   have_membarrier = cc.compiles('''
2707     #include <linux/membarrier.h>
2708     #include <sys/syscall.h>
2709     #include <unistd.h>
2710     #include <stdlib.h>
2711     int main(void) {
2712         syscall(__NR_membarrier, MEMBARRIER_CMD_QUERY, 0);
2713         syscall(__NR_membarrier, MEMBARRIER_CMD_SHARED, 0);
2714         exit(0);
2715     }''')
2716 endif
2717 config_host_data.set('CONFIG_MEMBARRIER', get_option('membarrier') \
2718   .require(have_membarrier, error_message: 'membarrier system call not available') \
2719   .allowed())
2720
2721 have_afalg = get_option('crypto_afalg') \
2722   .require(cc.compiles(gnu_source_prefix + '''
2723     #include <errno.h>
2724     #include <sys/types.h>
2725     #include <sys/socket.h>
2726     #include <linux/if_alg.h>
2727     int main(void) {
2728       int sock;
2729       sock = socket(AF_ALG, SOCK_SEQPACKET, 0);
2730       return sock;
2731     }
2732   '''), error_message: 'AF_ALG requested but could not be detected').allowed()
2733 config_host_data.set('CONFIG_AF_ALG', have_afalg)
2734
2735 config_host_data.set('CONFIG_AF_VSOCK', cc.has_header_symbol(
2736   'linux/vm_sockets.h', 'AF_VSOCK',
2737   prefix: '#include <sys/socket.h>',
2738 ))
2739
2740 have_vss = false
2741 have_vss_sdk = false # old xp/2003 SDK
2742 if targetos == 'windows' and link_language == 'cpp'
2743   have_vss = cxx.compiles('''
2744     #define __MIDL_user_allocate_free_DEFINED__
2745     #include <vss.h>
2746     int main(void) { return VSS_CTX_BACKUP; }''')
2747   have_vss_sdk = cxx.has_header('vscoordint.h')
2748 endif
2749 config_host_data.set('HAVE_VSS_SDK', have_vss_sdk)
2750
2751 foreach k, v: config_host
2752   if k.startswith('CONFIG_')
2753     config_host_data.set(k, v == 'y' ? 1 : v)
2754   endif
2755 endforeach
2756
2757 # Older versions of MinGW do not import _lock_file and _unlock_file properly.
2758 # This was fixed for v6.0.0 with commit b48e3ac8969d.
2759 if targetos == 'windows'
2760   config_host_data.set('HAVE__LOCK_FILE', cc.links('''
2761     #include <stdio.h>
2762     int main(void) {
2763       _lock_file(NULL);
2764       _unlock_file(NULL);
2765       return 0;
2766     }''', name: '_lock_file and _unlock_file'))
2767 endif
2768
2769 if targetos == 'windows'
2770   mingw_has_setjmp_longjmp = cc.links('''
2771     #include <setjmp.h>
2772     int main(void) {
2773       /*
2774        * These functions are not available in setjmp header, but may be
2775        * available at link time, from libmingwex.a.
2776        */
2777       extern int __mingw_setjmp(jmp_buf);
2778       extern void __attribute__((noreturn)) __mingw_longjmp(jmp_buf, int);
2779       jmp_buf env;
2780       __mingw_setjmp(env);
2781       __mingw_longjmp(env, 0);
2782     }
2783   ''', name: 'mingw setjmp and longjmp')
2784
2785   if cpu == 'aarch64' and not mingw_has_setjmp_longjmp
2786     error('mingw must provide setjmp/longjmp for windows-arm64')
2787   endif
2788 endif
2789
2790 ########################
2791 # Target configuration #
2792 ########################
2793
2794 minikconf = find_program('scripts/minikconf.py')
2795 config_all = {}
2796 config_all_devices = {}
2797 config_all_disas = {}
2798 config_devices_mak_list = []
2799 config_devices_h = {}
2800 config_target_h = {}
2801 config_target_mak = {}
2802
2803 disassemblers = {
2804   'alpha' : ['CONFIG_ALPHA_DIS'],
2805   'avr' : ['CONFIG_AVR_DIS'],
2806   'cris' : ['CONFIG_CRIS_DIS'],
2807   'hexagon' : ['CONFIG_HEXAGON_DIS'],
2808   'hppa' : ['CONFIG_HPPA_DIS'],
2809   'i386' : ['CONFIG_I386_DIS'],
2810   'x86_64' : ['CONFIG_I386_DIS'],
2811   'm68k' : ['CONFIG_M68K_DIS'],
2812   'microblaze' : ['CONFIG_MICROBLAZE_DIS'],
2813   'mips' : ['CONFIG_MIPS_DIS'],
2814   'nios2' : ['CONFIG_NIOS2_DIS'],
2815   'or1k' : ['CONFIG_OPENRISC_DIS'],
2816   'ppc' : ['CONFIG_PPC_DIS'],
2817   'riscv' : ['CONFIG_RISCV_DIS'],
2818   'rx' : ['CONFIG_RX_DIS'],
2819   's390' : ['CONFIG_S390_DIS'],
2820   'sh4' : ['CONFIG_SH4_DIS'],
2821   'sparc' : ['CONFIG_SPARC_DIS'],
2822   'xtensa' : ['CONFIG_XTENSA_DIS'],
2823   'loongarch' : ['CONFIG_LOONGARCH_DIS'],
2824 }
2825
2826 have_ivshmem = config_host_data.get('CONFIG_EVENTFD')
2827 host_kconfig = \
2828   (get_option('fuzzing') ? ['CONFIG_FUZZ=y'] : []) + \
2829   (have_tpm ? ['CONFIG_TPM=y'] : []) + \
2830   (spice.found() ? ['CONFIG_SPICE=y'] : []) + \
2831   (have_ivshmem ? ['CONFIG_IVSHMEM=y'] : []) + \
2832   (opengl.found() ? ['CONFIG_OPENGL=y'] : []) + \
2833   (x11.found() ? ['CONFIG_X11=y'] : []) + \
2834   (have_vhost_user ? ['CONFIG_VHOST_USER=y'] : []) + \
2835   (have_vhost_vdpa ? ['CONFIG_VHOST_VDPA=y'] : []) + \
2836   (have_vhost_kernel ? ['CONFIG_VHOST_KERNEL=y'] : []) + \
2837   (have_virtfs ? ['CONFIG_VIRTFS=y'] : []) + \
2838   ('CONFIG_LINUX' in config_host ? ['CONFIG_LINUX=y'] : []) + \
2839   (have_pvrdma ? ['CONFIG_PVRDMA=y'] : []) + \
2840   (multiprocess_allowed ? ['CONFIG_MULTIPROCESS_ALLOWED=y'] : []) + \
2841   (vfio_user_server_allowed ? ['CONFIG_VFIO_USER_SERVER_ALLOWED=y'] : [])
2842
2843 ignored = [ 'TARGET_XML_FILES', 'TARGET_ABI_DIR', 'TARGET_ARCH' ]
2844
2845 default_targets = 'CONFIG_DEFAULT_TARGETS' in config_host
2846 actual_target_dirs = []
2847 fdt_required = []
2848 foreach target : target_dirs
2849   config_target = { 'TARGET_NAME': target.split('-')[0] }
2850   if target.endswith('linux-user')
2851     if targetos != 'linux'
2852       if default_targets
2853         continue
2854       endif
2855       error('Target @0@ is only available on a Linux host'.format(target))
2856     endif
2857     config_target += { 'CONFIG_LINUX_USER': 'y' }
2858   elif target.endswith('bsd-user')
2859     if 'CONFIG_BSD' not in config_host
2860       if default_targets
2861         continue
2862       endif
2863       error('Target @0@ is only available on a BSD host'.format(target))
2864     endif
2865     config_target += { 'CONFIG_BSD_USER': 'y' }
2866   elif target.endswith('softmmu')
2867     config_target += { 'CONFIG_SOFTMMU': 'y' }
2868   endif
2869   if target.endswith('-user')
2870     config_target += {
2871       'CONFIG_USER_ONLY': 'y',
2872       'CONFIG_QEMU_INTERP_PREFIX':
2873         get_option('interp_prefix').replace('%M', config_target['TARGET_NAME'])
2874     }
2875   endif
2876
2877   accel_kconfig = []
2878   foreach sym: accelerators
2879     if sym == 'CONFIG_TCG' or target in accelerator_targets.get(sym, [])
2880       config_target += { sym: 'y' }
2881       config_all += { sym: 'y' }
2882       if target in modular_tcg
2883         config_target += { 'CONFIG_TCG_MODULAR': 'y' }
2884       else
2885         config_target += { 'CONFIG_TCG_BUILTIN': 'y' }
2886       endif
2887       accel_kconfig += [ sym + '=y' ]
2888     endif
2889   endforeach
2890   if accel_kconfig.length() == 0
2891     if default_targets
2892       continue
2893     endif
2894     error('No accelerator available for target @0@'.format(target))
2895   endif
2896
2897   actual_target_dirs += target
2898   config_target += keyval.load('configs/targets' / target + '.mak')
2899   config_target += { 'TARGET_' + config_target['TARGET_ARCH'].to_upper(): 'y' }
2900
2901   if 'TARGET_NEED_FDT' in config_target
2902     fdt_required += target
2903   endif
2904
2905   # Add default keys
2906   if 'TARGET_BASE_ARCH' not in config_target
2907     config_target += {'TARGET_BASE_ARCH': config_target['TARGET_ARCH']}
2908   endif
2909   if 'TARGET_ABI_DIR' not in config_target
2910     config_target += {'TARGET_ABI_DIR': config_target['TARGET_ARCH']}
2911   endif
2912   if 'TARGET_BIG_ENDIAN' not in config_target
2913     config_target += {'TARGET_BIG_ENDIAN': 'n'}
2914   endif
2915
2916   foreach k, v: disassemblers
2917     if host_arch.startswith(k) or config_target['TARGET_BASE_ARCH'].startswith(k)
2918       foreach sym: v
2919         config_target += { sym: 'y' }
2920         config_all_disas += { sym: 'y' }
2921       endforeach
2922     endif
2923   endforeach
2924
2925   config_target_data = configuration_data()
2926   foreach k, v: config_target
2927     if not k.startswith('TARGET_') and not k.startswith('CONFIG_')
2928       # do nothing
2929     elif ignored.contains(k)
2930       # do nothing
2931     elif k == 'TARGET_BASE_ARCH'
2932       # Note that TARGET_BASE_ARCH ends up in config-target.h but it is
2933       # not used to select files from sourcesets.
2934       config_target_data.set('TARGET_' + v.to_upper(), 1)
2935     elif k == 'TARGET_NAME' or k == 'CONFIG_QEMU_INTERP_PREFIX'
2936       config_target_data.set_quoted(k, v)
2937     elif v == 'y'
2938       config_target_data.set(k, 1)
2939     elif v == 'n'
2940       config_target_data.set(k, 0)
2941     else
2942       config_target_data.set(k, v)
2943     endif
2944   endforeach
2945   config_target_data.set('QEMU_ARCH',
2946                          'QEMU_ARCH_' + config_target['TARGET_BASE_ARCH'].to_upper())
2947   config_target_h += {target: configure_file(output: target + '-config-target.h',
2948                                                configuration: config_target_data)}
2949
2950   if target.endswith('-softmmu')
2951     config_input = meson.get_external_property(target, 'default')
2952     config_devices_mak = target + '-config-devices.mak'
2953     config_devices_mak = configure_file(
2954       input: ['configs/devices' / target / config_input + '.mak', 'Kconfig'],
2955       output: config_devices_mak,
2956       depfile: config_devices_mak + '.d',
2957       capture: true,
2958       command: [minikconf,
2959                 get_option('default_devices') ? '--defconfig' : '--allnoconfig',
2960                 config_devices_mak, '@DEPFILE@', '@INPUT@',
2961                 host_kconfig, accel_kconfig,
2962                 'CONFIG_' + config_target['TARGET_ARCH'].to_upper() + '=y'])
2963
2964     config_devices_data = configuration_data()
2965     config_devices = keyval.load(config_devices_mak)
2966     foreach k, v: config_devices
2967       config_devices_data.set(k, 1)
2968     endforeach
2969     config_devices_mak_list += config_devices_mak
2970     config_devices_h += {target: configure_file(output: target + '-config-devices.h',
2971                                                 configuration: config_devices_data)}
2972     config_target += config_devices
2973     config_all_devices += config_devices
2974   endif
2975   config_target_mak += {target: config_target}
2976 endforeach
2977 target_dirs = actual_target_dirs
2978
2979 # This configuration is used to build files that are shared by
2980 # multiple binaries, and then extracted out of the "common"
2981 # static_library target.
2982 #
2983 # We do not use all_sources()/all_dependencies(), because it would
2984 # build literally all source files, including devices only used by
2985 # targets that are not built for this compilation.  The CONFIG_ALL
2986 # pseudo symbol replaces it.
2987
2988 config_all += config_all_devices
2989 config_all += config_host
2990 config_all += config_all_disas
2991 config_all += {
2992   'CONFIG_XEN': xen.found(),
2993   'CONFIG_SOFTMMU': have_system,
2994   'CONFIG_USER_ONLY': have_user,
2995   'CONFIG_ALL': true,
2996 }
2997
2998 target_configs_h = []
2999 foreach target: target_dirs
3000   target_configs_h += config_target_h[target]
3001   target_configs_h += config_devices_h.get(target, [])
3002 endforeach
3003 genh += custom_target('config-poison.h',
3004                       input: [target_configs_h],
3005                       output: 'config-poison.h',
3006                       capture: true,
3007                       command: [find_program('scripts/make-config-poison.sh'),
3008                                 target_configs_h])
3009
3010 ##############
3011 # Submodules #
3012 ##############
3013
3014 capstone = not_found
3015 if not get_option('capstone').auto() or have_system or have_user
3016   capstone = dependency('capstone', version: '>=3.0.5',
3017                         method: 'pkg-config',
3018                         required: get_option('capstone'))
3019
3020   # Some versions of capstone have broken pkg-config file
3021   # that reports a wrong -I path, causing the #include to
3022   # fail later. If the system has such a broken version
3023   # do not use it.
3024   if capstone.found() and not cc.compiles('#include <capstone.h>',
3025                                           dependencies: [capstone])
3026     capstone = not_found
3027     if get_option('capstone').enabled()
3028       error('capstone requested, but it does not appear to work')
3029     endif
3030   endif
3031 endif
3032
3033 libvfio_user_dep = not_found
3034 if have_system and vfio_user_server_allowed
3035   libvfio_user_proj = subproject('libvfio-user', required: true)
3036   libvfio_user_dep = libvfio_user_proj.get_variable('libvfio_user_dep')
3037 endif
3038
3039 fdt = not_found
3040 fdt_opt = get_option('fdt')
3041 if fdt_required.length() > 0 or fdt_opt == 'enabled'
3042   if fdt_opt == 'disabled'
3043     error('fdt disabled but required by targets ' + ', '.join(fdt_required))
3044   endif
3045
3046   if fdt_opt in ['enabled', 'auto', 'system']
3047     fdt = cc.find_library('fdt', required: fdt_opt == 'system')
3048     if fdt.found() and cc.links('''
3049        #include <libfdt.h>
3050        #include <libfdt_env.h>
3051        int main(void) { fdt_find_max_phandle(NULL, NULL); return 0; }''',
3052          dependencies: fdt)
3053       fdt_opt = 'system'
3054     elif fdt_opt == 'system'
3055        error('system libfdt requested, but it is too old (1.5.1 or newer required)')
3056     else
3057       fdt_opt = 'internal'
3058       fdt = not_found
3059     endif
3060   endif
3061   if not fdt.found()
3062     assert(fdt_opt == 'internal')
3063     libfdt_proj = subproject('dtc', required: true,
3064                              default_options: ['tools=false',  'yaml=disabled',
3065                                                'python=disabled', 'default_library=static'])
3066     fdt = libfdt_proj.get_variable('libfdt_dep')
3067   endif
3068 else
3069   fdt_opt = 'disabled'
3070 endif
3071
3072 config_host_data.set('CONFIG_CAPSTONE', capstone.found())
3073 config_host_data.set('CONFIG_FDT', fdt.found())
3074 config_host_data.set('CONFIG_SLIRP', slirp.found())
3075
3076 #####################
3077 # Generated sources #
3078 #####################
3079
3080 genh += configure_file(output: 'config-host.h', configuration: config_host_data)
3081
3082 hxtool = find_program('scripts/hxtool')
3083 shaderinclude = find_program('scripts/shaderinclude.py')
3084 qapi_gen = find_program('scripts/qapi-gen.py')
3085 qapi_gen_depends = [ meson.current_source_dir() / 'scripts/qapi/__init__.py',
3086                      meson.current_source_dir() / 'scripts/qapi/commands.py',
3087                      meson.current_source_dir() / 'scripts/qapi/common.py',
3088                      meson.current_source_dir() / 'scripts/qapi/error.py',
3089                      meson.current_source_dir() / 'scripts/qapi/events.py',
3090                      meson.current_source_dir() / 'scripts/qapi/expr.py',
3091                      meson.current_source_dir() / 'scripts/qapi/gen.py',
3092                      meson.current_source_dir() / 'scripts/qapi/introspect.py',
3093                      meson.current_source_dir() / 'scripts/qapi/main.py',
3094                      meson.current_source_dir() / 'scripts/qapi/parser.py',
3095                      meson.current_source_dir() / 'scripts/qapi/schema.py',
3096                      meson.current_source_dir() / 'scripts/qapi/source.py',
3097                      meson.current_source_dir() / 'scripts/qapi/types.py',
3098                      meson.current_source_dir() / 'scripts/qapi/visit.py',
3099                      meson.current_source_dir() / 'scripts/qapi-gen.py'
3100 ]
3101
3102 tracetool = [
3103   python, files('scripts/tracetool.py'),
3104    '--backend=' + ','.join(get_option('trace_backends'))
3105 ]
3106 tracetool_depends = files(
3107   'scripts/tracetool/backend/log.py',
3108   'scripts/tracetool/backend/__init__.py',
3109   'scripts/tracetool/backend/dtrace.py',
3110   'scripts/tracetool/backend/ftrace.py',
3111   'scripts/tracetool/backend/simple.py',
3112   'scripts/tracetool/backend/syslog.py',
3113   'scripts/tracetool/backend/ust.py',
3114   'scripts/tracetool/format/ust_events_c.py',
3115   'scripts/tracetool/format/ust_events_h.py',
3116   'scripts/tracetool/format/__init__.py',
3117   'scripts/tracetool/format/d.py',
3118   'scripts/tracetool/format/simpletrace_stap.py',
3119   'scripts/tracetool/format/c.py',
3120   'scripts/tracetool/format/h.py',
3121   'scripts/tracetool/format/log_stap.py',
3122   'scripts/tracetool/format/stap.py',
3123   'scripts/tracetool/__init__.py',
3124   'scripts/tracetool/vcpu.py'
3125 )
3126
3127 qemu_version_cmd = [find_program('scripts/qemu-version.sh'),
3128                     meson.current_source_dir(),
3129                     get_option('pkgversion'), meson.project_version()]
3130 qemu_version = custom_target('qemu-version.h',
3131                              output: 'qemu-version.h',
3132                              command: qemu_version_cmd,
3133                              capture: true,
3134                              build_by_default: true,
3135                              build_always_stale: true)
3136 genh += qemu_version
3137
3138 hxdep = []
3139 hx_headers = [
3140   ['qemu-options.hx', 'qemu-options.def'],
3141   ['qemu-img-cmds.hx', 'qemu-img-cmds.h'],
3142 ]
3143 if have_system
3144   hx_headers += [
3145     ['hmp-commands.hx', 'hmp-commands.h'],
3146     ['hmp-commands-info.hx', 'hmp-commands-info.h'],
3147   ]
3148 endif
3149 foreach d : hx_headers
3150   hxdep += custom_target(d[1],
3151                 input: files(d[0]),
3152                 output: d[1],
3153                 capture: true,
3154                 build_by_default: true, # to be removed when added to a target
3155                 command: [hxtool, '-h', '@INPUT0@'])
3156 endforeach
3157 genh += hxdep
3158
3159 ###################
3160 # Collect sources #
3161 ###################
3162
3163 authz_ss = ss.source_set()
3164 blockdev_ss = ss.source_set()
3165 block_ss = ss.source_set()
3166 chardev_ss = ss.source_set()
3167 common_ss = ss.source_set()
3168 crypto_ss = ss.source_set()
3169 hwcore_ss = ss.source_set()
3170 io_ss = ss.source_set()
3171 qmp_ss = ss.source_set()
3172 qom_ss = ss.source_set()
3173 softmmu_ss = ss.source_set()
3174 specific_fuzz_ss = ss.source_set()
3175 specific_ss = ss.source_set()
3176 stub_ss = ss.source_set()
3177 trace_ss = ss.source_set()
3178 user_ss = ss.source_set()
3179 util_ss = ss.source_set()
3180
3181 # accel modules
3182 qtest_module_ss = ss.source_set()
3183 tcg_module_ss = ss.source_set()
3184
3185 modules = {}
3186 target_modules = {}
3187 hw_arch = {}
3188 target_arch = {}
3189 target_softmmu_arch = {}
3190 target_user_arch = {}
3191
3192 ###############
3193 # Trace files #
3194 ###############
3195
3196 # TODO: add each directory to the subdirs from its own meson.build, once
3197 # we have those
3198 trace_events_subdirs = [
3199   'crypto',
3200   'qapi',
3201   'qom',
3202   'monitor',
3203   'util',
3204   'gdbstub',
3205 ]
3206 if have_linux_user
3207   trace_events_subdirs += [ 'linux-user' ]
3208 endif
3209 if have_bsd_user
3210   trace_events_subdirs += [ 'bsd-user' ]
3211 endif
3212 if have_block
3213   trace_events_subdirs += [
3214     'authz',
3215     'block',
3216     'io',
3217     'nbd',
3218     'scsi',
3219   ]
3220 endif
3221 if have_system
3222   trace_events_subdirs += [
3223     'accel/kvm',
3224     'audio',
3225     'backends',
3226     'backends/tpm',
3227     'chardev',
3228     'ebpf',
3229     'hw/9pfs',
3230     'hw/acpi',
3231     'hw/adc',
3232     'hw/alpha',
3233     'hw/arm',
3234     'hw/audio',
3235     'hw/block',
3236     'hw/block/dataplane',
3237     'hw/char',
3238     'hw/display',
3239     'hw/dma',
3240     'hw/hyperv',
3241     'hw/i2c',
3242     'hw/i386',
3243     'hw/i386/xen',
3244     'hw/i386/kvm',
3245     'hw/ide',
3246     'hw/input',
3247     'hw/intc',
3248     'hw/isa',
3249     'hw/mem',
3250     'hw/mips',
3251     'hw/misc',
3252     'hw/misc/macio',
3253     'hw/net',
3254     'hw/net/can',
3255     'hw/nubus',
3256     'hw/nvme',
3257     'hw/nvram',
3258     'hw/pci',
3259     'hw/pci-host',
3260     'hw/ppc',
3261     'hw/rdma',
3262     'hw/rdma/vmw',
3263     'hw/rtc',
3264     'hw/s390x',
3265     'hw/scsi',
3266     'hw/sd',
3267     'hw/sh4',
3268     'hw/sparc',
3269     'hw/sparc64',
3270     'hw/ssi',
3271     'hw/timer',
3272     'hw/tpm',
3273     'hw/usb',
3274     'hw/vfio',
3275     'hw/virtio',
3276     'hw/watchdog',
3277     'hw/xen',
3278     'hw/gpio',
3279     'migration',
3280     'net',
3281     'softmmu',
3282     'ui',
3283     'hw/remote',
3284   ]
3285 endif
3286 if have_system or have_user
3287   trace_events_subdirs += [
3288     'accel/tcg',
3289     'hw/core',
3290     'target/arm',
3291     'target/arm/hvf',
3292     'target/hppa',
3293     'target/i386',
3294     'target/i386/kvm',
3295     'target/mips/tcg',
3296     'target/nios2',
3297     'target/ppc',
3298     'target/riscv',
3299     'target/s390x',
3300     'target/s390x/kvm',
3301     'target/sparc',
3302   ]
3303 endif
3304
3305 vhost_user = not_found
3306 if targetos == 'linux' and have_vhost_user
3307   libvhost_user = subproject('libvhost-user')
3308   vhost_user = libvhost_user.get_variable('vhost_user_dep')
3309 endif
3310
3311 libvduse = not_found
3312 if have_libvduse
3313   libvduse_proj = subproject('libvduse')
3314   libvduse = libvduse_proj.get_variable('libvduse_dep')
3315 endif
3316
3317 # NOTE: the trace/ subdirectory needs the qapi_trace_events variable
3318 # that is filled in by qapi/.
3319 subdir('qapi')
3320 subdir('qobject')
3321 subdir('stubs')
3322 subdir('trace')
3323 subdir('util')
3324 subdir('qom')
3325 subdir('authz')
3326 subdir('crypto')
3327 subdir('ui')
3328 subdir('hw')
3329 subdir('gdbstub')
3330
3331 if enable_modules
3332   libmodulecommon = static_library('module-common', files('module-common.c') + genh, pic: true, c_args: '-DBUILD_DSO')
3333   modulecommon = declare_dependency(link_whole: libmodulecommon, compile_args: '-DBUILD_DSO')
3334 endif
3335
3336 qom_ss = qom_ss.apply(config_host, strict: false)
3337 libqom = static_library('qom', qom_ss.sources() + genh,
3338                         dependencies: [qom_ss.dependencies()],
3339                         name_suffix: 'fa')
3340 qom = declare_dependency(link_whole: libqom)
3341
3342 event_loop_base = files('event-loop-base.c')
3343 event_loop_base = static_library('event-loop-base', sources: event_loop_base + genh,
3344                                  build_by_default: true)
3345 event_loop_base = declare_dependency(link_whole: event_loop_base,
3346                                      dependencies: [qom])
3347
3348 stub_ss = stub_ss.apply(config_all, strict: false)
3349
3350 util_ss.add_all(trace_ss)
3351 util_ss = util_ss.apply(config_all, strict: false)
3352 libqemuutil = static_library('qemuutil',
3353                              sources: util_ss.sources() + stub_ss.sources() + genh,
3354                              dependencies: [util_ss.dependencies(), libm, threads, glib, socket, malloc, pixman])
3355 qemuutil = declare_dependency(link_with: libqemuutil,
3356                               sources: genh + version_res,
3357                               dependencies: [event_loop_base])
3358
3359 if have_system or have_user
3360   decodetree = generator(find_program('scripts/decodetree.py'),
3361                          output: 'decode-@BASENAME@.c.inc',
3362                          arguments: ['@INPUT@', '@EXTRA_ARGS@', '-o', '@OUTPUT@'])
3363   subdir('libdecnumber')
3364   subdir('target')
3365 endif
3366
3367 subdir('audio')
3368 subdir('io')
3369 subdir('chardev')
3370 subdir('fsdev')
3371 subdir('dump')
3372
3373 if have_block
3374   block_ss.add(files(
3375     'block.c',
3376     'blockjob.c',
3377     'job.c',
3378     'qemu-io-cmds.c',
3379   ))
3380   if config_host_data.get('CONFIG_REPLICATION')
3381     block_ss.add(files('replication.c'))
3382   endif
3383
3384   subdir('nbd')
3385   subdir('scsi')
3386   subdir('block')
3387
3388   blockdev_ss.add(files(
3389     'blockdev.c',
3390     'blockdev-nbd.c',
3391     'iothread.c',
3392     'job-qmp.c',
3393   ), gnutls)
3394
3395   # os-posix.c contains POSIX-specific functions used by qemu-storage-daemon,
3396   # os-win32.c does not
3397   blockdev_ss.add(when: 'CONFIG_POSIX', if_true: files('os-posix.c'))
3398   softmmu_ss.add(when: 'CONFIG_WIN32', if_true: [files('os-win32.c')])
3399 endif
3400
3401 common_ss.add(files('cpus-common.c'))
3402 specific_ss.add(files('cpu.c'))
3403
3404 subdir('softmmu')
3405
3406 # Work around a gcc bug/misfeature wherein constant propagation looks
3407 # through an alias:
3408 #   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99696
3409 # to guess that a const variable is always zero.  Without lto, this is
3410 # impossible, as the alias is restricted to page-vary-common.c.  Indeed,
3411 # without lto, not even the alias is required -- we simply use different
3412 # declarations in different compilation units.
3413 pagevary = files('page-vary-common.c')
3414 if get_option('b_lto')
3415   pagevary_flags = ['-fno-lto']
3416   if get_option('cfi')
3417     pagevary_flags += '-fno-sanitize=cfi-icall'
3418   endif
3419   pagevary = static_library('page-vary-common', sources: pagevary + genh,
3420                             c_args: pagevary_flags)
3421   pagevary = declare_dependency(link_with: pagevary)
3422 endif
3423 common_ss.add(pagevary)
3424 specific_ss.add(files('page-vary.c'))
3425
3426 subdir('backends')
3427 subdir('disas')
3428 subdir('migration')
3429 subdir('monitor')
3430 subdir('net')
3431 subdir('replay')
3432 subdir('semihosting')
3433 subdir('stats')
3434 subdir('tcg')
3435 subdir('fpu')
3436 subdir('accel')
3437 subdir('plugins')
3438 subdir('ebpf')
3439
3440 common_user_inc = []
3441
3442 subdir('common-user')
3443 subdir('bsd-user')
3444 subdir('linux-user')
3445
3446 # needed for fuzzing binaries
3447 subdir('tests/qtest/libqos')
3448 subdir('tests/qtest/fuzz')
3449
3450 # accel modules
3451 tcg_real_module_ss = ss.source_set()
3452 tcg_real_module_ss.add_all(when: 'CONFIG_TCG_MODULAR', if_true: tcg_module_ss)
3453 specific_ss.add_all(when: 'CONFIG_TCG_BUILTIN', if_true: tcg_module_ss)
3454 target_modules += { 'accel' : { 'qtest': qtest_module_ss,
3455                                 'tcg': tcg_real_module_ss }}
3456
3457 ########################
3458 # Library dependencies #
3459 ########################
3460
3461 modinfo_collect = find_program('scripts/modinfo-collect.py')
3462 modinfo_generate = find_program('scripts/modinfo-generate.py')
3463 modinfo_files = []
3464
3465 block_mods = []
3466 softmmu_mods = []
3467 foreach d, list : modules
3468   if not (d == 'block' ? have_block : have_system)
3469     continue
3470   endif
3471
3472   foreach m, module_ss : list
3473     if enable_modules
3474       module_ss = module_ss.apply(config_all, strict: false)
3475       sl = static_library(d + '-' + m, [genh, module_ss.sources()],
3476                           dependencies: [modulecommon, module_ss.dependencies()], pic: true)
3477       if d == 'block'
3478         block_mods += sl
3479       else
3480         softmmu_mods += sl
3481       endif
3482       if module_ss.sources() != []
3483         # FIXME: Should use sl.extract_all_objects(recursive: true) as
3484         # input. Sources can be used multiple times but objects are
3485         # unique when it comes to lookup in compile_commands.json.
3486         # Depnds on a mesion version with
3487         # https://github.com/mesonbuild/meson/pull/8900
3488         modinfo_files += custom_target(d + '-' + m + '.modinfo',
3489                                        output: d + '-' + m + '.modinfo',
3490                                        input: module_ss.sources() + genh,
3491                                        capture: true,
3492                                        command: [modinfo_collect, module_ss.sources()])
3493       endif
3494     else
3495       if d == 'block'
3496         block_ss.add_all(module_ss)
3497       else
3498         softmmu_ss.add_all(module_ss)
3499       endif
3500     endif
3501   endforeach
3502 endforeach
3503
3504 foreach d, list : target_modules
3505   foreach m, module_ss : list
3506     if enable_modules
3507       foreach target : target_dirs
3508         if target.endswith('-softmmu')
3509           config_target = config_target_mak[target]
3510           config_target += config_host
3511           target_inc = [include_directories('target' / config_target['TARGET_BASE_ARCH'])]
3512           c_args = ['-DNEED_CPU_H',
3513                     '-DCONFIG_TARGET="@0@-config-target.h"'.format(target),
3514                     '-DCONFIG_DEVICES="@0@-config-devices.h"'.format(target)]
3515           target_module_ss = module_ss.apply(config_target, strict: false)
3516           if target_module_ss.sources() != []
3517             module_name = d + '-' + m + '-' + config_target['TARGET_NAME']
3518             sl = static_library(module_name,
3519                                 [genh, target_module_ss.sources()],
3520                                 dependencies: [modulecommon, target_module_ss.dependencies()],
3521                                 include_directories: target_inc,
3522                                 c_args: c_args,
3523                                 pic: true)
3524             softmmu_mods += sl
3525             # FIXME: Should use sl.extract_all_objects(recursive: true) too.
3526             modinfo_files += custom_target(module_name + '.modinfo',
3527                                            output: module_name + '.modinfo',
3528                                            input: target_module_ss.sources() + genh,
3529                                            capture: true,
3530                                            command: [modinfo_collect, '--target', target, target_module_ss.sources()])
3531           endif
3532         endif
3533       endforeach
3534     else
3535       specific_ss.add_all(module_ss)
3536     endif
3537   endforeach
3538 endforeach
3539
3540 if enable_modules
3541   foreach target : target_dirs
3542     if target.endswith('-softmmu')
3543       config_target = config_target_mak[target]
3544       config_devices_mak = target + '-config-devices.mak'
3545       modinfo_src = custom_target('modinfo-' + target + '.c',
3546                                   output: 'modinfo-' + target + '.c',
3547                                   input: modinfo_files,
3548                                   command: [modinfo_generate, '--devices', config_devices_mak, '@INPUT@'],
3549                                   capture: true)
3550
3551       modinfo_lib = static_library('modinfo-' + target + '.c', modinfo_src)
3552       modinfo_dep = declare_dependency(link_with: modinfo_lib)
3553
3554       arch = config_target['TARGET_NAME'] == 'sparc64' ? 'sparc64' : config_target['TARGET_BASE_ARCH']
3555       hw_arch[arch].add(modinfo_dep)
3556     endif
3557   endforeach
3558 endif
3559
3560 nm = find_program('nm')
3561 undefsym = find_program('scripts/undefsym.py')
3562 block_syms = custom_target('block.syms', output: 'block.syms',
3563                              input: [libqemuutil, block_mods],
3564                              capture: true,
3565                              command: [undefsym, nm, '@INPUT@'])
3566 qemu_syms = custom_target('qemu.syms', output: 'qemu.syms',
3567                              input: [libqemuutil, softmmu_mods],
3568                              capture: true,
3569                              command: [undefsym, nm, '@INPUT@'])
3570
3571 authz_ss = authz_ss.apply(config_host, strict: false)
3572 libauthz = static_library('authz', authz_ss.sources() + genh,
3573                           dependencies: [authz_ss.dependencies()],
3574                           name_suffix: 'fa',
3575                           build_by_default: false)
3576
3577 authz = declare_dependency(link_whole: libauthz,
3578                            dependencies: qom)
3579
3580 crypto_ss = crypto_ss.apply(config_host, strict: false)
3581 libcrypto = static_library('crypto', crypto_ss.sources() + genh,
3582                            dependencies: [crypto_ss.dependencies()],
3583                            name_suffix: 'fa',
3584                            build_by_default: false)
3585
3586 crypto = declare_dependency(link_whole: libcrypto,
3587                             dependencies: [authz, qom])
3588
3589 io_ss = io_ss.apply(config_host, strict: false)
3590 libio = static_library('io', io_ss.sources() + genh,
3591                        dependencies: [io_ss.dependencies()],
3592                        link_with: libqemuutil,
3593                        name_suffix: 'fa',
3594                        build_by_default: false)
3595
3596 io = declare_dependency(link_whole: libio, dependencies: [crypto, qom])
3597
3598 libmigration = static_library('migration', sources: migration_files + genh,
3599                               name_suffix: 'fa',
3600                               build_by_default: false)
3601 migration = declare_dependency(link_with: libmigration,
3602                                dependencies: [zlib, qom, io])
3603 softmmu_ss.add(migration)
3604
3605 block_ss = block_ss.apply(config_host, strict: false)
3606 libblock = static_library('block', block_ss.sources() + genh,
3607                           dependencies: block_ss.dependencies(),
3608                           link_depends: block_syms,
3609                           name_suffix: 'fa',
3610                           build_by_default: false)
3611
3612 block = declare_dependency(link_whole: [libblock],
3613                            link_args: '@block.syms',
3614                            dependencies: [crypto, io])
3615
3616 blockdev_ss = blockdev_ss.apply(config_host, strict: false)
3617 libblockdev = static_library('blockdev', blockdev_ss.sources() + genh,
3618                              dependencies: blockdev_ss.dependencies(),
3619                              name_suffix: 'fa',
3620                              build_by_default: false)
3621
3622 blockdev = declare_dependency(link_whole: [libblockdev],
3623                               dependencies: [block, event_loop_base])
3624
3625 qmp_ss = qmp_ss.apply(config_host, strict: false)
3626 libqmp = static_library('qmp', qmp_ss.sources() + genh,
3627                         dependencies: qmp_ss.dependencies(),
3628                         name_suffix: 'fa',
3629                         build_by_default: false)
3630
3631 qmp = declare_dependency(link_whole: [libqmp])
3632
3633 libchardev = static_library('chardev', chardev_ss.sources() + genh,
3634                             name_suffix: 'fa',
3635                             dependencies: chardev_ss.dependencies(),
3636                             build_by_default: false)
3637
3638 chardev = declare_dependency(link_whole: libchardev)
3639
3640 hwcore_ss = hwcore_ss.apply(config_host, strict: false)
3641 libhwcore = static_library('hwcore', sources: hwcore_ss.sources() + genh,
3642                            name_suffix: 'fa',
3643                            build_by_default: false)
3644 hwcore = declare_dependency(link_whole: libhwcore)
3645 common_ss.add(hwcore)
3646
3647 ###########
3648 # Targets #
3649 ###########
3650
3651 emulator_modules = []
3652 foreach m : block_mods + softmmu_mods
3653   emulator_modules += shared_module(m.name(),
3654                 build_by_default: true,
3655                 name_prefix: '',
3656                 link_whole: m,
3657                 install: true,
3658                 install_dir: qemu_moddir)
3659 endforeach
3660 if emulator_modules.length() > 0
3661   alias_target('modules', emulator_modules)
3662 endif
3663
3664 softmmu_ss.add(authz, blockdev, chardev, crypto, io, qmp)
3665 common_ss.add(qom, qemuutil)
3666
3667 common_ss.add_all(when: 'CONFIG_SOFTMMU', if_true: [softmmu_ss])
3668 common_ss.add_all(when: 'CONFIG_USER_ONLY', if_true: user_ss)
3669
3670 common_all = common_ss.apply(config_all, strict: false)
3671 common_all = static_library('common',
3672                             build_by_default: false,
3673                             sources: common_all.sources() + genh,
3674                             include_directories: common_user_inc,
3675                             implicit_include_directories: false,
3676                             dependencies: common_all.dependencies(),
3677                             name_suffix: 'fa')
3678
3679 feature_to_c = find_program('scripts/feature_to_c.sh')
3680
3681 if targetos == 'darwin'
3682   entitlement = find_program('scripts/entitlement.sh')
3683 endif
3684
3685 emulators = {}
3686 foreach target : target_dirs
3687   config_target = config_target_mak[target]
3688   target_name = config_target['TARGET_NAME']
3689   target_base_arch = config_target['TARGET_BASE_ARCH']
3690   arch_srcs = [config_target_h[target]]
3691   arch_deps = []
3692   c_args = ['-DNEED_CPU_H',
3693             '-DCONFIG_TARGET="@0@-config-target.h"'.format(target),
3694             '-DCONFIG_DEVICES="@0@-config-devices.h"'.format(target)]
3695   link_args = emulator_link_args
3696
3697   config_target += config_host
3698   target_inc = [include_directories('target' / config_target['TARGET_BASE_ARCH'])]
3699   if targetos == 'linux'
3700     target_inc += include_directories('linux-headers', is_system: true)
3701   endif
3702   if target.endswith('-softmmu')
3703     target_type='system'
3704     t = target_softmmu_arch[target_base_arch].apply(config_target, strict: false)
3705     arch_srcs += t.sources()
3706     arch_deps += t.dependencies()
3707
3708     hw_dir = target_name == 'sparc64' ? 'sparc64' : target_base_arch
3709     hw = hw_arch[hw_dir].apply(config_target, strict: false)
3710     arch_srcs += hw.sources()
3711     arch_deps += hw.dependencies()
3712
3713     arch_srcs += config_devices_h[target]
3714     link_args += ['@block.syms', '@qemu.syms']
3715   else
3716     abi = config_target['TARGET_ABI_DIR']
3717     target_type='user'
3718     target_inc += common_user_inc
3719     if target_base_arch in target_user_arch
3720       t = target_user_arch[target_base_arch].apply(config_target, strict: false)
3721       arch_srcs += t.sources()
3722       arch_deps += t.dependencies()
3723     endif
3724     if 'CONFIG_LINUX_USER' in config_target
3725       base_dir = 'linux-user'
3726     endif
3727     if 'CONFIG_BSD_USER' in config_target
3728       base_dir = 'bsd-user'
3729       target_inc += include_directories('bsd-user/' / targetos)
3730       target_inc += include_directories('bsd-user/host/' / host_arch)
3731       dir = base_dir / abi
3732       arch_srcs += files(dir / 'signal.c', dir / 'target_arch_cpu.c')
3733     endif
3734     target_inc += include_directories(
3735       base_dir,
3736       base_dir / abi,
3737     )
3738     if 'CONFIG_LINUX_USER' in config_target
3739       dir = base_dir / abi
3740       arch_srcs += files(dir / 'signal.c', dir / 'cpu_loop.c')
3741       if config_target.has_key('TARGET_SYSTBL_ABI')
3742         arch_srcs += \
3743           syscall_nr_generators[abi].process(base_dir / abi / config_target['TARGET_SYSTBL'],
3744                                              extra_args : config_target['TARGET_SYSTBL_ABI'])
3745       endif
3746     endif
3747   endif
3748
3749   if 'TARGET_XML_FILES' in config_target
3750     gdbstub_xml = custom_target(target + '-gdbstub-xml.c',
3751                                 output: target + '-gdbstub-xml.c',
3752                                 input: files(config_target['TARGET_XML_FILES'].split()),
3753                                 command: [feature_to_c, '@INPUT@'],
3754                                 capture: true)
3755     arch_srcs += gdbstub_xml
3756   endif
3757
3758   t = target_arch[target_base_arch].apply(config_target, strict: false)
3759   arch_srcs += t.sources()
3760   arch_deps += t.dependencies()
3761
3762   target_common = common_ss.apply(config_target, strict: false)
3763   objects = common_all.extract_objects(target_common.sources())
3764   deps = target_common.dependencies()
3765
3766   target_specific = specific_ss.apply(config_target, strict: false)
3767   arch_srcs += target_specific.sources()
3768   arch_deps += target_specific.dependencies()
3769
3770   lib = static_library('qemu-' + target,
3771                  sources: arch_srcs + genh,
3772                  dependencies: arch_deps,
3773                  objects: objects,
3774                  include_directories: target_inc,
3775                  c_args: c_args,
3776                  build_by_default: false,
3777                  name_suffix: 'fa')
3778
3779   if target.endswith('-softmmu')
3780     execs = [{
3781       'name': 'qemu-system-' + target_name,
3782       'win_subsystem': 'console',
3783       'sources': files('softmmu/main.c'),
3784       'dependencies': []
3785     }]
3786     if targetos == 'windows' and (sdl.found() or gtk.found())
3787       execs += [{
3788         'name': 'qemu-system-' + target_name + 'w',
3789         'win_subsystem': 'windows',
3790         'sources': files('softmmu/main.c'),
3791         'dependencies': []
3792       }]
3793     endif
3794     if get_option('fuzzing')
3795       specific_fuzz = specific_fuzz_ss.apply(config_target, strict: false)
3796       execs += [{
3797         'name': 'qemu-fuzz-' + target_name,
3798         'win_subsystem': 'console',
3799         'sources': specific_fuzz.sources(),
3800         'dependencies': specific_fuzz.dependencies(),
3801       }]
3802     endif
3803   else
3804     execs = [{
3805       'name': 'qemu-' + target_name,
3806       'win_subsystem': 'console',
3807       'sources': [],
3808       'dependencies': []
3809     }]
3810   endif
3811   foreach exe: execs
3812     exe_name = exe['name']
3813     if targetos == 'darwin'
3814       exe_name += '-unsigned'
3815     endif
3816
3817     emulator = executable(exe_name, exe['sources'],
3818                install: true,
3819                c_args: c_args,
3820                dependencies: arch_deps + deps + exe['dependencies'],
3821                objects: lib.extract_all_objects(recursive: true),
3822                link_language: link_language,
3823                link_depends: [block_syms, qemu_syms] + exe.get('link_depends', []),
3824                link_args: link_args,
3825                win_subsystem: exe['win_subsystem'])
3826
3827     if targetos == 'darwin'
3828       icon = 'pc-bios/qemu.rsrc'
3829       build_input = [emulator, files(icon)]
3830       install_input = [
3831         get_option('bindir') / exe_name,
3832         meson.current_source_dir() / icon
3833       ]
3834       if 'CONFIG_HVF' in config_target
3835         entitlements = 'accel/hvf/entitlements.plist'
3836         build_input += files(entitlements)
3837         install_input += meson.current_source_dir() / entitlements
3838       endif
3839
3840       emulators += {exe['name'] : custom_target(exe['name'],
3841                    input: build_input,
3842                    output: exe['name'],
3843                    command: [entitlement, '@OUTPUT@', '@INPUT@'])
3844       }
3845
3846       meson.add_install_script(entitlement, '--install',
3847                                get_option('bindir') / exe['name'],
3848                                install_input)
3849     else
3850       emulators += {exe['name']: emulator}
3851     endif
3852
3853     if stap.found()
3854       foreach stp: [
3855         {'ext': '.stp-build', 'fmt': 'stap', 'bin': meson.current_build_dir() / exe['name'], 'install': false},
3856         {'ext': '.stp', 'fmt': 'stap', 'bin': get_option('prefix') / get_option('bindir') / exe['name'], 'install': true},
3857         {'ext': '-simpletrace.stp', 'fmt': 'simpletrace-stap', 'bin': '', 'install': true},
3858         {'ext': '-log.stp', 'fmt': 'log-stap', 'bin': '', 'install': true},
3859       ]
3860         custom_target(exe['name'] + stp['ext'],
3861                       input: trace_events_all,
3862                       output: exe['name'] + stp['ext'],
3863                       install: stp['install'],
3864                       install_dir: get_option('datadir') / 'systemtap/tapset',
3865                       command: [
3866                         tracetool, '--group=all', '--format=' + stp['fmt'],
3867                         '--binary=' + stp['bin'],
3868                         '--target-name=' + target_name,
3869                         '--target-type=' + target_type,
3870                         '--probe-prefix=qemu.' + target_type + '.' + target_name,
3871                         '@INPUT@', '@OUTPUT@'
3872                       ],
3873                       depend_files: tracetool_depends)
3874       endforeach
3875     endif
3876   endforeach
3877 endforeach
3878
3879 # Other build targets
3880
3881 if 'CONFIG_PLUGIN' in config_host
3882   install_headers('include/qemu/qemu-plugin.h')
3883 endif
3884
3885 subdir('qga')
3886
3887 # Don't build qemu-keymap if xkbcommon is not explicitly enabled
3888 # when we don't build tools or system
3889 if xkbcommon.found()
3890   # used for the update-keymaps target, so include rules even if !have_tools
3891   qemu_keymap = executable('qemu-keymap', files('qemu-keymap.c', 'ui/input-keymap.c') + genh,
3892                            dependencies: [qemuutil, xkbcommon], install: have_tools)
3893 endif
3894
3895 if have_tools
3896   qemu_img = executable('qemu-img', [files('qemu-img.c'), hxdep],
3897              dependencies: [authz, block, crypto, io, qom, qemuutil], install: true)
3898   qemu_io = executable('qemu-io', files('qemu-io.c'),
3899              dependencies: [block, qemuutil], install: true)
3900   qemu_nbd = executable('qemu-nbd', files('qemu-nbd.c'),
3901                dependencies: [blockdev, qemuutil, gnutls, selinux],
3902                install: true)
3903
3904   subdir('storage-daemon')
3905   subdir('contrib/rdmacm-mux')
3906   subdir('contrib/elf2dmp')
3907
3908   executable('qemu-edid', files('qemu-edid.c', 'hw/display/edid-generate.c'),
3909              dependencies: qemuutil,
3910              install: true)
3911
3912   if have_vhost_user
3913     subdir('contrib/vhost-user-blk')
3914     subdir('contrib/vhost-user-gpu')
3915     subdir('contrib/vhost-user-input')
3916     subdir('contrib/vhost-user-scsi')
3917   endif
3918
3919   if targetos == 'linux'
3920     executable('qemu-bridge-helper', files('qemu-bridge-helper.c'),
3921                dependencies: [qemuutil, libcap_ng],
3922                install: true,
3923                install_dir: get_option('libexecdir'))
3924
3925     executable('qemu-pr-helper', files('scsi/qemu-pr-helper.c', 'scsi/utils.c'),
3926                dependencies: [authz, crypto, io, qom, qemuutil,
3927                               libcap_ng, mpathpersist],
3928                install: true)
3929   endif
3930
3931   if have_ivshmem
3932     subdir('contrib/ivshmem-client')
3933     subdir('contrib/ivshmem-server')
3934   endif
3935 endif
3936
3937 subdir('scripts')
3938 subdir('tools')
3939 subdir('pc-bios')
3940 subdir('docs')
3941 subdir('tests')
3942 if gtk.found()
3943   subdir('po')
3944 endif
3945
3946 if host_machine.system() == 'windows'
3947   nsis_cmd = [
3948     find_program('scripts/nsis.py'),
3949     '@OUTPUT@',
3950     get_option('prefix'),
3951     meson.current_source_dir(),
3952     glib_pc.get_variable('bindir'),
3953     host_machine.cpu(),
3954     '--',
3955     '-DDISPLAYVERSION=' + meson.project_version(),
3956   ]
3957   if build_docs
3958     nsis_cmd += '-DCONFIG_DOCUMENTATION=y'
3959   endif
3960   if gtk.found()
3961     nsis_cmd += '-DCONFIG_GTK=y'
3962   endif
3963
3964   nsis = custom_target('nsis',
3965                        output: 'qemu-setup-' + meson.project_version() + '.exe',
3966                        input: files('qemu.nsi'),
3967                        build_always_stale: true,
3968                        command: nsis_cmd + ['@INPUT@'])
3969   alias_target('installer', nsis)
3970 endif
3971
3972 #########################
3973 # Configuration summary #
3974 #########################
3975
3976 # Build environment
3977 summary_info = {}
3978 summary_info += {'Build directory':   meson.current_build_dir()}
3979 summary_info += {'Source path':       meson.current_source_dir()}
3980 summary_info += {'Download dependencies': get_option('wrap_mode') != 'nodownload'}
3981 summary(summary_info, bool_yn: true, section: 'Build environment')
3982
3983 # Directories
3984 summary_info += {'Install prefix':    get_option('prefix')}
3985 summary_info += {'BIOS directory':    qemu_datadir}
3986 pathsep = targetos == 'windows' ? ';' : ':'
3987 summary_info += {'firmware path':     pathsep.join(get_option('qemu_firmwarepath'))}
3988 summary_info += {'binary directory':  get_option('prefix') / get_option('bindir')}
3989 summary_info += {'library directory': get_option('prefix') / get_option('libdir')}
3990 summary_info += {'module directory':  qemu_moddir}
3991 summary_info += {'libexec directory': get_option('prefix') / get_option('libexecdir')}
3992 summary_info += {'include directory': get_option('prefix') / get_option('includedir')}
3993 summary_info += {'config directory':  get_option('prefix') / get_option('sysconfdir')}
3994 if targetos != 'windows'
3995   summary_info += {'local state directory': get_option('prefix') / get_option('localstatedir')}
3996   summary_info += {'Manual directory':      get_option('prefix') / get_option('mandir')}
3997 else
3998   summary_info += {'local state directory': 'queried at runtime'}
3999 endif
4000 summary_info += {'Doc directory':     get_option('prefix') / get_option('docdir')}
4001 summary(summary_info, bool_yn: true, section: 'Directories')
4002
4003 # Host binaries
4004 summary_info = {}
4005 summary_info += {'python':            '@0@ (version: @1@)'.format(python.full_path(), python.language_version())}
4006 summary_info += {'sphinx-build':      sphinx_build}
4007 if config_host.has_key('HAVE_GDB_BIN')
4008   summary_info += {'gdb':             config_host['HAVE_GDB_BIN']}
4009 endif
4010 summary_info += {'iasl':              iasl}
4011 summary_info += {'genisoimage':       config_host['GENISOIMAGE']}
4012 if targetos == 'windows' and have_ga
4013   summary_info += {'wixl':            wixl}
4014 endif
4015 if slirp.found() and have_system
4016   summary_info += {'smbd':            have_slirp_smbd ? smbd_path : false}
4017 endif
4018 summary(summary_info, bool_yn: true, section: 'Host binaries')
4019
4020 # Configurable features
4021 summary_info = {}
4022 summary_info += {'Documentation':     build_docs}
4023 summary_info += {'system-mode emulation': have_system}
4024 summary_info += {'user-mode emulation': have_user}
4025 summary_info += {'block layer':       have_block}
4026 summary_info += {'Install blobs':     get_option('install_blobs')}
4027 summary_info += {'module support':    enable_modules}
4028 if enable_modules
4029   summary_info += {'alternative module path': get_option('module_upgrades')}
4030 endif
4031 summary_info += {'fuzzing support':   get_option('fuzzing')}
4032 if have_system
4033   summary_info += {'Audio drivers':     ' '.join(audio_drivers_selected)}
4034 endif
4035 summary_info += {'Trace backends':    ','.join(get_option('trace_backends'))}
4036 if 'simple' in get_option('trace_backends')
4037   summary_info += {'Trace output file': get_option('trace_file') + '-<pid>'}
4038 endif
4039 summary_info += {'D-Bus display':     dbus_display}
4040 summary_info += {'QOM debugging':     get_option('qom_cast_debug')}
4041 summary_info += {'vhost-kernel support': have_vhost_kernel}
4042 summary_info += {'vhost-net support': have_vhost_net}
4043 summary_info += {'vhost-user support': have_vhost_user}
4044 summary_info += {'vhost-user-crypto support': have_vhost_user_crypto}
4045 summary_info += {'vhost-user-blk server support': have_vhost_user_blk_server}
4046 summary_info += {'vhost-vdpa support': have_vhost_vdpa}
4047 summary_info += {'build guest agent': have_ga}
4048 summary(summary_info, bool_yn: true, section: 'Configurable features')
4049
4050 # Compilation information
4051 summary_info = {}
4052 summary_info += {'host CPU':          cpu}
4053 summary_info += {'host endianness':   build_machine.endian()}
4054 summary_info += {'C compiler':        ' '.join(meson.get_compiler('c').cmd_array())}
4055 summary_info += {'Host C compiler':   ' '.join(meson.get_compiler('c', native: true).cmd_array())}
4056 if link_language == 'cpp'
4057   summary_info += {'C++ compiler':    ' '.join(meson.get_compiler('cpp').cmd_array())}
4058 else
4059   summary_info += {'C++ compiler':      false}
4060 endif
4061 if targetos == 'darwin'
4062   summary_info += {'Objective-C compiler': ' '.join(meson.get_compiler('objc').cmd_array())}
4063 endif
4064 option_cflags = (get_option('debug') ? ['-g'] : [])
4065 if get_option('optimization') != 'plain'
4066   option_cflags += ['-O' + get_option('optimization')]
4067 endif
4068 summary_info += {'CFLAGS':            ' '.join(get_option('c_args') + option_cflags)}
4069 if link_language == 'cpp'
4070   summary_info += {'CXXFLAGS':        ' '.join(get_option('cpp_args') + option_cflags)}
4071 endif
4072 if targetos == 'darwin'
4073   summary_info += {'OBJCFLAGS':       ' '.join(get_option('objc_args') + option_cflags)}
4074 endif
4075 link_args = get_option(link_language + '_link_args')
4076 if link_args.length() > 0
4077   summary_info += {'LDFLAGS':         ' '.join(link_args)}
4078 endif
4079 summary_info += {'QEMU_CFLAGS':       ' '.join(qemu_common_flags + qemu_cflags)}
4080 if 'cpp' in all_languages
4081   summary_info += {'QEMU_CXXFLAGS':     ' '.join(qemu_common_flags + qemu_cxxflags)}
4082 endif
4083 if 'objc' in all_languages
4084   summary_info += {'QEMU_OBJCFLAGS':    ' '.join(qemu_common_flags)}
4085 endif
4086 summary_info += {'QEMU_LDFLAGS':      ' '.join(qemu_ldflags)}
4087 summary_info += {'profiler':          get_option('profiler')}
4088 summary_info += {'link-time optimization (LTO)': get_option('b_lto')}
4089 summary_info += {'PIE':               get_option('b_pie')}
4090 summary_info += {'static build':      get_option('prefer_static')}
4091 summary_info += {'malloc trim support': has_malloc_trim}
4092 summary_info += {'membarrier':        have_membarrier}
4093 summary_info += {'debug graph lock':  get_option('debug_graph_lock')}
4094 summary_info += {'debug stack usage': get_option('debug_stack_usage')}
4095 summary_info += {'mutex debugging':   get_option('debug_mutex')}
4096 summary_info += {'memory allocator':  get_option('malloc')}
4097 summary_info += {'avx2 optimization': config_host_data.get('CONFIG_AVX2_OPT')}
4098 summary_info += {'avx512bw optimization': config_host_data.get('CONFIG_AVX512BW_OPT')}
4099 summary_info += {'avx512f optimization': config_host_data.get('CONFIG_AVX512F_OPT')}
4100 if get_option('gprof')
4101   gprof_info = 'YES (deprecated)'
4102 else
4103   gprof_info = get_option('gprof')
4104 endif
4105 summary_info += {'gprof':             gprof_info}
4106 summary_info += {'gcov':              get_option('b_coverage')}
4107 summary_info += {'thread sanitizer':  get_option('tsan')}
4108 summary_info += {'CFI support':       get_option('cfi')}
4109 if get_option('cfi')
4110   summary_info += {'CFI debug support': get_option('cfi_debug')}
4111 endif
4112 summary_info += {'strip binaries':    get_option('strip')}
4113 summary_info += {'sparse':            sparse}
4114 summary_info += {'mingw32 support':   targetos == 'windows'}
4115 summary(summary_info, bool_yn: true, section: 'Compilation')
4116
4117 # snarf the cross-compilation information for tests
4118 summary_info = {}
4119 have_cross = false
4120 foreach target: target_dirs
4121   tcg_mak = meson.current_build_dir() / 'tests/tcg' / target / 'config-target.mak'
4122   if fs.exists(tcg_mak)
4123     config_cross_tcg = keyval.load(tcg_mak)
4124     if 'CC' in config_cross_tcg
4125       summary_info += {config_cross_tcg['TARGET_NAME']: config_cross_tcg['CC']}
4126       have_cross = true
4127     endif
4128   endif
4129 endforeach
4130 if have_cross
4131   summary(summary_info, bool_yn: true, section: 'Cross compilers')
4132 endif
4133
4134 # Targets and accelerators
4135 summary_info = {}
4136 if have_system
4137   summary_info += {'KVM support':       config_all.has_key('CONFIG_KVM')}
4138   summary_info += {'HAX support':       config_all.has_key('CONFIG_HAX')}
4139   summary_info += {'HVF support':       config_all.has_key('CONFIG_HVF')}
4140   summary_info += {'WHPX support':      config_all.has_key('CONFIG_WHPX')}
4141   summary_info += {'NVMM support':      config_all.has_key('CONFIG_NVMM')}
4142   summary_info += {'Xen support':       xen.found()}
4143   if xen.found()
4144     summary_info += {'xen ctrl version':  xen.version()}
4145   endif
4146   summary_info += {'Xen emulation':     config_all.has_key('CONFIG_XEN_EMU')}
4147 endif
4148 summary_info += {'TCG support':       config_all.has_key('CONFIG_TCG')}
4149 if config_all.has_key('CONFIG_TCG')
4150   if get_option('tcg_interpreter')
4151     summary_info += {'TCG backend':   'TCI (TCG with bytecode interpreter, slow)'}
4152   else
4153     summary_info += {'TCG backend':   'native (@0@)'.format(cpu)}
4154   endif
4155   summary_info += {'TCG plugins': config_host.has_key('CONFIG_PLUGIN')}
4156   summary_info += {'TCG debug enabled': config_host.has_key('CONFIG_DEBUG_TCG')}
4157 endif
4158 summary_info += {'target list':       ' '.join(target_dirs)}
4159 if have_system
4160   summary_info += {'default devices':   get_option('default_devices')}
4161   summary_info += {'out of process emulation': multiprocess_allowed}
4162   summary_info += {'vfio-user server': vfio_user_server_allowed}
4163 endif
4164 summary(summary_info, bool_yn: true, section: 'Targets and accelerators')
4165
4166 # Block layer
4167 summary_info = {}
4168 summary_info += {'coroutine backend': coroutine_backend}
4169 summary_info += {'coroutine pool':    have_coroutine_pool}
4170 if have_block
4171   summary_info += {'Block whitelist (rw)': get_option('block_drv_rw_whitelist')}
4172   summary_info += {'Block whitelist (ro)': get_option('block_drv_ro_whitelist')}
4173   summary_info += {'Use block whitelist in tools': get_option('block_drv_whitelist_in_tools')}
4174   summary_info += {'VirtFS (9P) support':    have_virtfs}
4175   summary_info += {'VirtFS (9P) Proxy Helper support': have_virtfs_proxy_helper}
4176   summary_info += {'Live block migration': config_host_data.get('CONFIG_LIVE_BLOCK_MIGRATION')}
4177   summary_info += {'replication support': config_host_data.get('CONFIG_REPLICATION')}
4178   summary_info += {'bochs support':     get_option('bochs').allowed()}
4179   summary_info += {'cloop support':     get_option('cloop').allowed()}
4180   summary_info += {'dmg support':       get_option('dmg').allowed()}
4181   summary_info += {'qcow v1 support':   get_option('qcow1').allowed()}
4182   summary_info += {'vdi support':       get_option('vdi').allowed()}
4183   summary_info += {'vhdx support':      get_option('vhdx').allowed()}
4184   summary_info += {'vmdk support':      get_option('vmdk').allowed()}
4185   summary_info += {'vpc support':       get_option('vpc').allowed()}
4186   summary_info += {'vvfat support':     get_option('vvfat').allowed()}
4187   summary_info += {'qed support':       get_option('qed').allowed()}
4188   summary_info += {'parallels support': get_option('parallels').allowed()}
4189   summary_info += {'FUSE exports':      fuse}
4190   summary_info += {'VDUSE block exports': have_vduse_blk_export}
4191 endif
4192 summary(summary_info, bool_yn: true, section: 'Block layer support')
4193
4194 # Crypto
4195 summary_info = {}
4196 summary_info += {'TLS priority':      get_option('tls_priority')}
4197 summary_info += {'GNUTLS support':    gnutls}
4198 if gnutls.found()
4199   summary_info += {'  GNUTLS crypto':   gnutls_crypto.found()}
4200 endif
4201 summary_info += {'libgcrypt':         gcrypt}
4202 summary_info += {'nettle':            nettle}
4203 if nettle.found()
4204    summary_info += {'  XTS':             xts != 'private'}
4205 endif
4206 summary_info += {'AF_ALG support':    have_afalg}
4207 summary_info += {'rng-none':          get_option('rng_none')}
4208 summary_info += {'Linux keyring':     have_keyring}
4209 summary(summary_info, bool_yn: true, section: 'Crypto')
4210
4211 # UI
4212 summary_info = {}
4213 if targetos == 'darwin'
4214   summary_info += {'Cocoa support':           cocoa}
4215 endif
4216 summary_info += {'SDL support':       sdl}
4217 summary_info += {'SDL image support': sdl_image}
4218 summary_info += {'GTK support':       gtk}
4219 summary_info += {'pixman':            pixman}
4220 summary_info += {'VTE support':       vte}
4221 summary_info += {'PNG support':       png}
4222 summary_info += {'VNC support':       vnc}
4223 if vnc.found()
4224   summary_info += {'VNC SASL support':  sasl}
4225   summary_info += {'VNC JPEG support':  jpeg}
4226 endif
4227 summary_info += {'spice protocol support': spice_protocol}
4228 if spice_protocol.found()
4229   summary_info += {'  spice server support': spice}
4230 endif
4231 summary_info += {'curses support':    curses}
4232 summary_info += {'brlapi support':    brlapi}
4233 summary(summary_info, bool_yn: true, section: 'User interface')
4234
4235 # Audio backends
4236 summary_info = {}
4237 if targetos not in ['darwin', 'haiku', 'windows']
4238   summary_info += {'OSS support':     oss}
4239   summary_info += {'sndio support':   sndio}
4240 elif targetos == 'darwin'
4241   summary_info += {'CoreAudio support': coreaudio}
4242 elif targetos == 'windows'
4243   summary_info += {'DirectSound support': dsound}
4244 endif
4245 if targetos == 'linux'
4246   summary_info += {'ALSA support':    alsa}
4247   summary_info += {'PulseAudio support': pulse}
4248 endif
4249 summary_info += {'Pipewire support':  pipewire}
4250 summary_info += {'JACK support':      jack}
4251 summary(summary_info, bool_yn: true, section: 'Audio backends')
4252
4253 # Network backends
4254 summary_info = {}
4255 if targetos == 'darwin'
4256   summary_info += {'vmnet.framework support': vmnet}
4257 endif
4258 summary_info += {'slirp support':     slirp}
4259 summary_info += {'vde support':       vde}
4260 summary_info += {'netmap support':    have_netmap}
4261 summary_info += {'l2tpv3 support':    have_l2tpv3}
4262 summary(summary_info, bool_yn: true, section: 'Network backends')
4263
4264 # Libraries
4265 summary_info = {}
4266 summary_info += {'libtasn1':          tasn1}
4267 summary_info += {'PAM':               pam}
4268 summary_info += {'iconv support':     iconv}
4269 summary_info += {'virgl support':     virgl}
4270 summary_info += {'blkio support':     blkio}
4271 summary_info += {'curl support':      curl}
4272 summary_info += {'Multipath support': mpathpersist}
4273 summary_info += {'Linux AIO support': libaio}
4274 summary_info += {'Linux io_uring support': linux_io_uring}
4275 summary_info += {'ATTR/XATTR support': libattr}
4276 summary_info += {'RDMA support':      rdma}
4277 summary_info += {'PVRDMA support':    have_pvrdma}
4278 summary_info += {'fdt support':       fdt_opt == 'disabled' ? false : fdt_opt}
4279 summary_info += {'libcap-ng support': libcap_ng}
4280 summary_info += {'bpf support':       libbpf}
4281 summary_info += {'rbd support':       rbd}
4282 summary_info += {'smartcard support': cacard}
4283 summary_info += {'U2F support':       u2f}
4284 summary_info += {'libusb':            libusb}
4285 summary_info += {'usb net redir':     usbredir}
4286 summary_info += {'OpenGL support (epoxy)': opengl}
4287 summary_info += {'GBM':               gbm}
4288 summary_info += {'libiscsi support':  libiscsi}
4289 summary_info += {'libnfs support':    libnfs}
4290 if targetos == 'windows'
4291   if have_ga
4292     summary_info += {'QGA VSS support':   have_qga_vss}
4293   endif
4294 endif
4295 summary_info += {'seccomp support':   seccomp}
4296 summary_info += {'GlusterFS support': glusterfs}
4297 summary_info += {'TPM support':       have_tpm}
4298 summary_info += {'libssh support':    libssh}
4299 summary_info += {'lzo support':       lzo}
4300 summary_info += {'snappy support':    snappy}
4301 summary_info += {'bzip2 support':     libbzip2}
4302 summary_info += {'lzfse support':     liblzfse}
4303 summary_info += {'zstd support':      zstd}
4304 summary_info += {'NUMA host support': numa}
4305 summary_info += {'capstone':          capstone}
4306 summary_info += {'libpmem support':   libpmem}
4307 summary_info += {'libdaxctl support': libdaxctl}
4308 summary_info += {'libudev':           libudev}
4309 # Dummy dependency, keep .found()
4310 summary_info += {'FUSE lseek':        fuse_lseek.found()}
4311 summary_info += {'selinux':           selinux}
4312 summary_info += {'libdw':             libdw}
4313 summary(summary_info, bool_yn: true, section: 'Dependencies')
4314
4315 if not supported_cpus.contains(cpu)
4316   message()
4317   warning('SUPPORT FOR THIS HOST CPU WILL GO AWAY IN FUTURE RELEASES!')
4318   message()
4319   message('CPU host architecture ' + cpu + ' support is not currently maintained.')
4320   message('The QEMU project intends to remove support for this host CPU in')
4321   message('a future release if nobody volunteers to maintain it and to')
4322   message('provide a build host for our continuous integration setup.')
4323   message('configure has succeeded and you can continue to build, but')
4324   message('if you care about QEMU on this platform you should contact')
4325   message('us upstream at qemu-devel@nongnu.org.')
4326 endif
4327
4328 if not supported_oses.contains(targetos)
4329   message()
4330   warning('WARNING: SUPPORT FOR THIS HOST OS WILL GO AWAY IN FUTURE RELEASES!')
4331   message()
4332   message('Host OS ' + targetos + 'support is not currently maintained.')
4333   message('The QEMU project intends to remove support for this host OS in')
4334   message('a future release if nobody volunteers to maintain it and to')
4335   message('provide a build host for our continuous integration setup.')
4336   message('configure has succeeded and you can continue to build, but')
4337   message('if you care about QEMU on this platform you should contact')
4338   message('us upstream at qemu-devel@nongnu.org.')
4339 endif