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 targetos == 'windows' and 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', 'riscv32', 'riscv64', 'x86', 'x86_64',
  59   'arm', 'aarch64', 'loongarch64', 'mips', 'mips64', 'sparc64']
  60
  61 cpu = host_machine.cpu_family()
  62
  63 target_dirs = config_host['TARGET_DIRS'].split()
  64 have_linux_user = false
  65 have_bsd_user = false
  66 have_system = false
  67 foreach target : target_dirs
  68   have_linux_user = have_linux_user or target.endswith('linux-user')
  69   have_bsd_user = have_bsd_user or target.endswith('bsd-user')
  70   have_system = have_system or target.endswith('-softmmu')
  71 endforeach
  72 have_user = have_linux_user or have_bsd_user
  73 have_tools = get_option('tools') \
  74   .disable_auto_if(not have_system) \
  75   .allowed()
  76 have_ga = get_option('guest_agent') \
  77   .disable_auto_if(not have_system and not have_tools) \
  78   .require(targetos in ['sunos', 'linux', 'windows', 'freebsd', 'netbsd', 'openbsd'],
  79            error_message: 'unsupported OS for QEMU guest agent') \
  80   .allowed()
  81 enable_modules = get_option('modules') \
  82   .require(targetos != 'windows',
  83            error_message: 'Modules are not available for Windows') \
  84   .require(not get_option('prefer_static'),
  85            error_message: 'Modules are incompatible with static linking') \
  86   .allowed()
  87 have_block = have_system or have_tools
  88
  89 python = import('python').find_installation()
  90
  91 if cpu not in supported_cpus
  92   host_arch = 'unknown'
  93 elif cpu == 'x86'
  94   host_arch = 'i386'
  95 elif cpu == 'mips64'
  96   host_arch = 'mips'
  97 elif cpu in ['riscv32', 'riscv64']
  98   host_arch = 'riscv'
  99 else
 100   host_arch = cpu
 101 endif
 102
 103 if cpu in ['x86', 'x86_64']
 104   kvm_targets = ['i386-softmmu', 'x86_64-softmmu']
 105 elif cpu == 'aarch64'
 106   kvm_targets = ['aarch64-softmmu']
 107 elif cpu == 's390x'
 108   kvm_targets = ['s390x-softmmu']
 109 elif cpu in ['ppc', 'ppc64']
 110   kvm_targets = ['ppc-softmmu', 'ppc64-softmmu']
 111 elif cpu in ['mips', 'mips64']
 112   kvm_targets = ['mips-softmmu', 'mipsel-softmmu', 'mips64-softmmu', 'mips64el-softmmu']
 113 elif cpu in ['riscv32']
 114   kvm_targets = ['riscv32-softmmu']
 115 elif cpu in ['riscv64']
 116   kvm_targets = ['riscv64-softmmu']
 117 else
 118   kvm_targets = []
 119 endif
 120
 121 kvm_targets_c = '""'
 122 if get_option('kvm').allowed() and targetos == 'linux'
 123   kvm_targets_c = '"' + '" ,"'.join(kvm_targets) + '"'
 124 endif
 125 config_host_data.set('CONFIG_KVM_TARGETS', kvm_targets_c)
 126
 127 accelerator_targets = { 'CONFIG_KVM': kvm_targets }
 128
 129 if cpu in ['aarch64']
 130   accelerator_targets += {
 131     'CONFIG_HVF': ['aarch64-softmmu']
 132   }
 133 endif
 134
 135 if cpu in ['x86', 'x86_64', 'arm', 'aarch64']
 136   # i386 emulator provides xenpv machine type for multiple architectures
 137   accelerator_targets += {
 138     'CONFIG_XEN': ['i386-softmmu', 'x86_64-softmmu', 'aarch64-softmmu'],
 139   }
 140 endif
 141 if cpu in ['x86', 'x86_64']
 142   accelerator_targets += {
 143     'CONFIG_HAX': ['i386-softmmu', 'x86_64-softmmu'],
 144     'CONFIG_HVF': ['x86_64-softmmu'],
 145     'CONFIG_NVMM': ['i386-softmmu', 'x86_64-softmmu'],
 146     'CONFIG_WHPX': ['i386-softmmu', 'x86_64-softmmu'],
 147   }
 148 endif
 149
 150 modular_tcg = []
 151 # Darwin does not support references to thread-local variables in modules
 152 if targetos != 'darwin'
 153   modular_tcg = ['i386-softmmu', 'x86_64-softmmu']
 154 endif
 155
 156 edk2_targets = [ 'arm-softmmu', 'aarch64-softmmu', 'i386-softmmu', 'x86_64-softmmu' ]
 157 unpack_edk2_blobs = false
 158 foreach target : edk2_targets
 159   if target in target_dirs
 160     bzip2 = find_program('bzip2', required: get_option('install_blobs'))
 161     unpack_edk2_blobs = bzip2.found()
 162     break
 163   endif
 164 endforeach
 165
 166 dtrace = not_found
 167 stap = not_found
 168 if 'dtrace' in get_option('trace_backends')
 169   dtrace = find_program('dtrace', required: true)
 170   stap = find_program('stap', required: false)
 171   if stap.found()
 172     # Workaround to avoid dtrace(1) producing a file with 'hidden' symbol
 173     # visibility. Define STAP_SDT_V2 to produce 'default' symbol visibility
 174     # instead. QEMU --enable-modules depends on this because the SystemTap
 175     # semaphores are linked into the main binary and not the module's shared
 176     # object.
 177     add_global_arguments('-DSTAP_SDT_V2',
 178                          native: false, language: all_languages)
 179   endif
 180 endif
 181
 182 if get_option('iasl') == ''
 183   iasl = find_program('iasl', required: false)
 184 else
 185   iasl = find_program(get_option('iasl'), required: true)
 186 endif
 187
 188 ##################
 189 # Compiler flags #
 190 ##################
 191
 192 foreach lang : all_languages
 193   compiler = meson.get_compiler(lang)
 194   if compiler.get_id() == 'gcc' and compiler.version().version_compare('>=7.4')
 195     # ok
 196   elif compiler.get_id() == 'clang' and compiler.compiles('''
 197       #ifdef __apple_build_version__
 198       # if __clang_major__ < 12 || (__clang_major__ == 12 && __clang_minor__ < 0)
 199       #  error You need at least XCode Clang v12.0 to compile QEMU
 200       # endif
 201       #else
 202       # if __clang_major__ < 10 || (__clang_major__ == 10 && __clang_minor__ < 0)
 203       #  error You need at least Clang v10.0 to compile QEMU
 204       # endif
 205       #endif''')
 206     # ok
 207   else
 208     error('You either need GCC v7.4 or Clang v10.0 (or XCode Clang v12.0) to compile QEMU')
 209   endif
 210 endforeach
 211
 212 # default flags for all hosts
 213 # We use -fwrapv to tell the compiler that we require a C dialect where
 214 # left shift of signed integers is well defined and has the expected
 215 # 2s-complement style results. (Both clang and gcc agree that it
 216 # provides these semantics.)
 217
 218 qemu_common_flags = [
 219   '-D_GNU_SOURCE', '-D_FILE_OFFSET_BITS=64', '-D_LARGEFILE_SOURCE',
 220   '-fno-strict-aliasing', '-fno-common', '-fwrapv' ]
 221 qemu_cflags = []
 222 qemu_ldflags = []
 223
 224 if targetos == 'darwin'
 225   # Disable attempts to use ObjectiveC features in os/object.h since they
 226   # won't work when we're compiling with gcc as a C compiler.
 227   qemu_common_flags += '-DOS_OBJECT_USE_OBJC=0'
 228 elif targetos == 'solaris'
 229   # needed for CMSG_ macros in sys/socket.h
 230   qemu_common_flags += '-D_XOPEN_SOURCE=600'
 231   # needed for TIOCWIN* defines in termios.h
 232   qemu_common_flags += '-D__EXTENSIONS__'
 233 elif targetos == 'haiku'
 234   qemu_common_flags += ['-DB_USE_POSITIVE_POSIX_ERRORS', '-D_BSD_SOURCE', '-fPIC']
 235 endif
 236
 237 # __sync_fetch_and_and requires at least -march=i486. Many toolchains
 238 # use i686 as default anyway, but for those that don't, an explicit
 239 # specification is necessary
 240 if host_arch == 'i386' and not cc.links('''
 241   static int sfaa(int *ptr)
 242   {
 243     return __sync_fetch_and_and(ptr, 0);
 244   }
 245
 246   int main(void)
 247   {
 248     int val = 42;
 249     val = __sync_val_compare_and_swap(&val, 0, 1);
 250     sfaa(&val);
 251     return val;
 252   }''')
 253   qemu_common_flags = ['-march=i486'] + qemu_common_flags
 254 endif
 255
 256 if get_option('gprof')
 257   qemu_common_flags += ['-p']
 258   qemu_ldflags += ['-p']
 259 endif
 260
 261 if get_option('prefer_static')
 262   qemu_ldflags += get_option('b_pie') ? '-static-pie' : '-static'
 263 endif
 264
 265 # Meson currently only handles pie as a boolean for now, so if the user
 266 # has explicitly disabled PIE we need to extend our cflags.
 267 #
 268 # -no-pie is supposedly a linker flag that has no effect on the compiler
 269 # command line, but some distros, that didn't quite know what they were
 270 # doing, made local changes to gcc's specs file that turned it into
 271 # a compiler command-line flag.
 272 #
 273 # What about linker flags?  For a static build, no PIE is implied by -static
 274 # which we added above (and if it's not because of the same specs patching,
 275 # there's nothing we can do: compilation will fail, report a bug to your
 276 # distro and do not use --disable-pie in the meanwhile).  For dynamic linking,
 277 # instead, we can't add -no-pie because it overrides -shared: the linker then
 278 # tries to build an executable instead of a shared library and fails.  So
 279 # don't add -no-pie anywhere and cross fingers. :(
 280 if not get_option('b_pie')
 281   qemu_common_flags += cc.get_supported_arguments('-fno-pie', '-no-pie')
 282 endif
 283
 284 if not get_option('stack_protector').disabled()
 285   stack_protector_probe = '''
 286     int main(int argc, char *argv[])
 287     {
 288       char arr[64], *p = arr, *c = argv[argc - 1];
 289       while (*c) {
 290           *p++ = *c++;
 291       }
 292       return 0;
 293     }'''
 294   have_stack_protector = false
 295   foreach arg : ['-fstack-protector-strong', '-fstack-protector-all']
 296     # We need to check both a compile and a link, since some compiler
 297     # setups fail only on a .c->.o compile and some only at link time
 298     if cc.compiles(stack_protector_probe, args: ['-Werror', arg]) and \
 299        cc.links(stack_protector_probe, args: ['-Werror', arg])
 300       have_stack_protector = true
 301       qemu_cflags += arg
 302       qemu_ldflags += arg
 303       break
 304     endif
 305   endforeach
 306   get_option('stack_protector') \
 307     .require(have_stack_protector, error_message: 'Stack protector not supported')
 308 endif
 309
 310 coroutine_backend = get_option('coroutine_backend')
 311 ucontext_probe = '''
 312   #include <ucontext.h>
 313   #ifdef __stub_makecontext
 314   #error Ignoring glibc stub makecontext which will always fail
 315   #endif
 316   int main(void) { makecontext(0, 0, 0); return 0; }'''
 317
 318 # On Windows the only valid backend is the Windows specific one.
 319 # For POSIX prefer ucontext, but it's not always possible. The fallback
 320 # is sigcontext.
 321 supported_backends = []
 322 if targetos == 'windows'
 323   supported_backends += ['windows']
 324 else
 325   if targetos != 'darwin' and cc.links(ucontext_probe)
 326     supported_backends += ['ucontext']
 327   endif
 328   supported_backends += ['sigaltstack']
 329 endif
 330
 331 if coroutine_backend == 'auto'
 332   coroutine_backend = supported_backends[0]
 333 elif coroutine_backend not in supported_backends
 334   error('"@0@" backend requested but not available.  Available backends: @1@' \
 335         .format(coroutine_backend, ', '.join(supported_backends)))
 336 endif
 337
 338 # Compiles if SafeStack *not* enabled
 339 safe_stack_probe = '''
 340   int main(void)
 341   {
 342   #if defined(__has_feature)
 343   #if __has_feature(safe_stack)
 344   #error SafeStack Enabled
 345   #endif
 346   #endif
 347       return 0;
 348   }'''
 349 if get_option('safe_stack') != not cc.compiles(safe_stack_probe)
 350   safe_stack_arg = get_option('safe_stack') ? '-fsanitize=safe-stack' : '-fno-sanitize=safe-stack'
 351   if get_option('safe_stack') != not cc.compiles(safe_stack_probe, args: safe_stack_arg)
 352     error(get_option('safe_stack') \
 353           ? 'SafeStack not supported by your compiler' \
 354           : 'Cannot disable SafeStack')
 355   endif
 356   qemu_cflags += safe_stack_arg
 357   qemu_ldflags += safe_stack_arg
 358 endif
 359 if get_option('safe_stack') and coroutine_backend != 'ucontext'
 360   error('SafeStack is only supported with the ucontext coroutine backend')
 361 endif
 362
 363 if get_option('sanitizers')
 364   if cc.has_argument('-fsanitize=address')
 365     qemu_cflags = ['-fsanitize=address'] + qemu_cflags
 366     qemu_ldflags = ['-fsanitize=address'] + qemu_ldflags
 367   endif
 368
 369   # Detect static linking issue with ubsan - https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84285
 370   if cc.links('int main(int argc, char **argv) { return argc + 1; }',
 371               args: [qemu_ldflags, '-fsanitize=undefined'])
 372     qemu_cflags = ['-fsanitize=undefined'] + qemu_cflags
 373     qemu_ldflags = ['-fsanitize=undefined'] + qemu_ldflags
 374   endif
 375 endif
 376
 377 # Thread sanitizer is, for now, much noisier than the other sanitizers;
 378 # keep it separate until that is not the case.
 379 if get_option('tsan')
 380   if get_option('sanitizers')
 381     error('TSAN is not supported with other sanitizers')
 382   endif
 383   if not cc.has_function('__tsan_create_fiber',
 384                          args: '-fsanitize=thread',
 385                          prefix: '#include <sanitizer/tsan_interface.h>')
 386     error('Cannot enable TSAN due to missing fiber annotation interface')
 387   endif
 388   qemu_cflags = ['-fsanitize=thread'] + qemu_cflags
 389   qemu_ldflags = ['-fsanitize=thread'] + qemu_ldflags
 390 endif
 391
 392 # Detect support for PT_GNU_RELRO + DT_BIND_NOW.
 393 # The combination is known as "full relro", because .got.plt is read-only too.
 394 qemu_ldflags += cc.get_supported_link_arguments('-Wl,-z,relro', '-Wl,-z,now')
 395
 396 if targetos == 'windows'
 397   qemu_ldflags += cc.get_supported_link_arguments('-Wl,--no-seh', '-Wl,--nxcompat')
 398   qemu_ldflags += cc.get_supported_link_arguments('-Wl,--dynamicbase', '-Wl,--high-entropy-va')
 399 endif
 400
 401 # Exclude --warn-common with TSan to suppress warnings from the TSan libraries.
 402 if targetos != 'sunos' and not get_option('tsan')
 403   qemu_ldflags += cc.get_supported_link_arguments('-Wl,--warn-common')
 404 endif
 405
 406 if get_option('fuzzing')
 407   # Specify a filter to only instrument code that is directly related to
 408   # virtual-devices.
 409   configure_file(output: 'instrumentation-filter',
 410                  input: 'scripts/oss-fuzz/instrumentation-filter-template',
 411                  copy: true)
 412
 413   if cc.compiles('int main () { return 0; }',
 414                   name: '-fsanitize-coverage-allowlist=/dev/null',
 415                  args: ['-fsanitize-coverage-allowlist=/dev/null',
 416                         '-fsanitize-coverage=trace-pc'] )
 417     qemu_common_flags += ['-fsanitize-coverage-allowlist=instrumentation-filter']
 418   endif
 419
 420   if get_option('fuzzing_engine') == ''
 421     # Add CFLAGS to tell clang to add fuzzer-related instrumentation to all the
 422     # compiled code.  To build non-fuzzer binaries with --enable-fuzzing, link
 423     # everything with fsanitize=fuzzer-no-link. Otherwise, the linker will be
 424     # unable to bind the fuzzer-related callbacks added by instrumentation.
 425     qemu_common_flags += ['-fsanitize=fuzzer-no-link']
 426     qemu_ldflags += ['-fsanitize=fuzzer-no-link']
 427     # For the actual fuzzer binaries, we need to link against the libfuzzer
 428     # library. They need to be configurable, to support OSS-Fuzz
 429     fuzz_exe_ldflags = ['-fsanitize=fuzzer']
 430   else
 431     # LIB_FUZZING_ENGINE was set; assume we are running on OSS-Fuzz, and
 432     # the needed CFLAGS have already been provided
 433     fuzz_exe_ldflags = get_option('fuzzing_engine').split()
 434   endif
 435 endif
 436
 437 add_global_arguments(qemu_common_flags, native: false, language: all_languages)
 438 add_global_link_arguments(qemu_ldflags, native: false, language: all_languages)
 439
 440 # Collect warnings that we want to enable
 441
 442 warn_flags = [
 443   '-Wundef',
 444   '-Wwrite-strings',
 445   '-Wmissing-prototypes',
 446   '-Wstrict-prototypes',
 447   '-Wredundant-decls',
 448   '-Wold-style-declaration',
 449   '-Wold-style-definition',
 450   '-Wtype-limits',
 451   '-Wformat-security',
 452   '-Wformat-y2k',
 453   '-Winit-self',
 454   '-Wignored-qualifiers',
 455   '-Wempty-body',
 456   '-Wnested-externs',
 457   '-Wendif-labels',
 458   '-Wexpansion-to-defined',
 459   '-Wimplicit-fallthrough=2',
 460   '-Wmissing-format-attribute',
 461   '-Wno-initializer-overrides',
 462   '-Wno-missing-include-dirs',
 463   '-Wno-shift-negative-value',
 464   '-Wno-string-plus-int',
 465   '-Wno-typedef-redefinition',
 466   '-Wno-tautological-type-limit-compare',
 467   '-Wno-psabi',
 468   '-Wno-gnu-variable-sized-type-not-at-end',
 469 ]
 470
 471 if targetos != 'darwin'
 472   warn_flags += ['-Wthread-safety']
 473 endif
 474
 475 # Set up C++ compiler flags
 476 qemu_cxxflags = []
 477 if 'cpp' in all_languages
 478   qemu_cxxflags = ['-D__STDC_LIMIT_MACROS', '-D__STDC_CONSTANT_MACROS', '-D__STDC_FORMAT_MACROS'] + qemu_cflags
 479 endif
 480
 481 # clang does not support glibc + FORTIFY_SOURCE (is it still true?)
 482 if get_option('optimization') != '0' and targetos == 'linux'
 483   if cc.get_id() == 'gcc'
 484     qemu_cflags += ['-U_FORTIFY_SOURCE', '-D_FORTIFY_SOURCE=2']
 485   endif
 486   if 'cpp' in all_languages and cxx.get_id() == 'gcc'
 487     qemu_cxxflags += ['-U_FORTIFY_SOURCE', '-D_FORTIFY_SOURCE=2']
 488   endif
 489 endif
 490
 491 add_project_arguments(qemu_cflags, native: false, language: 'c')
 492 add_project_arguments(cc.get_supported_arguments(warn_flags), native: false, language: 'c')
 493 if 'cpp' in all_languages
 494   add_project_arguments(qemu_cxxflags, native: false, language: 'cpp')
 495   add_project_arguments(cxx.get_supported_arguments(warn_flags), native: false, language: 'cpp')
 496 endif
 497 if 'objc' in all_languages
 498   # Note sanitizer flags are not applied to Objective-C sources!
 499   add_project_arguments(objc.get_supported_arguments(warn_flags), native: false, language: 'objc')
 500 endif
 501 if targetos == 'linux'
 502   add_project_arguments('-isystem', meson.current_source_dir() / 'linux-headers',
 503                         '-isystem', 'linux-headers',
 504                         language: all_languages)
 505 endif
 506
 507 add_project_arguments('-iquote', '.',
 508                       '-iquote', meson.current_source_dir(),
 509                       '-iquote', meson.current_source_dir() / 'include',
 510                       language: all_languages)
 511
 512 # If a host-specific include directory exists, list that first...
 513 host_include = meson.current_source_dir() / 'host/include/'
 514 if fs.is_dir(host_include / host_arch)
 515   add_project_arguments('-iquote', host_include / host_arch,
 516                         language: all_languages)
 517 endif
 518 # ... followed by the generic fallback.
 519 add_project_arguments('-iquote', host_include / 'generic',
 520                       language: all_languages)
 521
 522 sparse = find_program('cgcc', required: get_option('sparse'))
 523 if sparse.found()
 524   run_target('sparse',
 525              command: [find_program('scripts/check_sparse.py'),
 526                        'compile_commands.json', sparse.full_path(), '-Wbitwise',
 527                        '-Wno-transparent-union', '-Wno-old-initializer',
 528                        '-Wno-non-pointer-null'])
 529 endif
 530
 531 ###########################################
 532 # Target-specific checks and dependencies #
 533 ###########################################
 534
 535 # Fuzzing
 536 if get_option('fuzzing') and get_option('fuzzing_engine') == '' and \
 537     not cc.links('''
 538           #include <stdint.h>
 539           #include <sys/types.h>
 540           int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size);
 541           int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { return 0; }
 542         ''',
 543         args: ['-Werror', '-fsanitize=fuzzer'])
 544   error('Your compiler does not support -fsanitize=fuzzer')
 545 endif
 546
 547 # Tracing backends
 548 if 'ftrace' in get_option('trace_backends') and targetos != 'linux'
 549   error('ftrace is supported only on Linux')
 550 endif
 551 if 'syslog' in get_option('trace_backends') and not cc.compiles('''
 552     #include <syslog.h>
 553     int main(void) {
 554         openlog("qemu", LOG_PID, LOG_DAEMON);
 555         syslog(LOG_INFO, "configure");
 556         return 0;
 557     }''')
 558   error('syslog is not supported on this system')
 559 endif
 560
 561 # Miscellaneous Linux-only features
 562 get_option('mpath') \
 563   .require(targetos == 'linux', error_message: 'Multipath is supported only on Linux')
 564
 565 multiprocess_allowed = get_option('multiprocess') \
 566   .require(targetos == 'linux', error_message: 'Multiprocess QEMU is supported only on Linux') \
 567   .allowed()
 568
 569 vfio_user_server_allowed = get_option('vfio_user_server') \
 570   .require(targetos == 'linux', error_message: 'vfio-user server is supported only on Linux') \
 571   .allowed()
 572
 573 have_tpm = get_option('tpm') \
 574   .require(targetos != 'windows', error_message: 'TPM emulation only available on POSIX systems') \
 575   .allowed()
 576
 577 # vhost
 578 have_vhost_user = get_option('vhost_user') \
 579   .disable_auto_if(targetos != 'linux') \
 580   .require(targetos != 'windows',
 581            error_message: 'vhost-user is not available on Windows').allowed()
 582 have_vhost_vdpa = get_option('vhost_vdpa') \
 583   .require(targetos == 'linux',
 584            error_message: 'vhost-vdpa is only available on Linux').allowed()
 585 have_vhost_kernel = get_option('vhost_kernel') \
 586   .require(targetos == 'linux',
 587            error_message: 'vhost-kernel is only available on Linux').allowed()
 588 have_vhost_user_crypto = get_option('vhost_crypto') \
 589   .require(have_vhost_user,
 590            error_message: 'vhost-crypto requires vhost-user to be enabled').allowed()
 591
 592 have_vhost = have_vhost_user or have_vhost_vdpa or have_vhost_kernel
 593
 594 have_vhost_net_user = have_vhost_user and get_option('vhost_net').allowed()
 595 have_vhost_net_vdpa = have_vhost_vdpa and get_option('vhost_net').allowed()
 596 have_vhost_net_kernel = have_vhost_kernel and get_option('vhost_net').allowed()
 597 have_vhost_net = have_vhost_net_kernel or have_vhost_net_user or have_vhost_net_vdpa
 598
 599 # Target-specific libraries and flags
 600 libm = cc.find_library('m', required: false)
 601 threads = dependency('threads')
 602 util = cc.find_library('util', required: false)
 603 winmm = []
 604 socket = []
 605 version_res = []
 606 coref = []
 607 iokit = []
 608 emulator_link_args = []
 609 nvmm =not_found
 610 hvf = not_found
 611 midl = not_found
 612 widl = not_found
 613 pathcch = not_found
 614 host_dsosuf = '.so'
 615 if targetos == 'windows'
 616   midl = find_program('midl', required: false)
 617   widl = find_program('widl', required: false)
 618   pathcch = cc.find_library('pathcch')
 619   socket = cc.find_library('ws2_32')
 620   winmm = cc.find_library('winmm')
 621
 622   win = import('windows')
 623   version_res = win.compile_resources('version.rc',
 624                                       depend_files: files('pc-bios/qemu-nsis.ico'),
 625                                       include_directories: include_directories('.'))
 626   host_dsosuf = '.dll'
 627 elif targetos == 'darwin'
 628   coref = dependency('appleframeworks', modules: 'CoreFoundation')
 629   iokit = dependency('appleframeworks', modules: 'IOKit', required: false)
 630   host_dsosuf = '.dylib'
 631 elif targetos == 'sunos'
 632   socket = [cc.find_library('socket'),
 633             cc.find_library('nsl'),
 634             cc.find_library('resolv')]
 635 elif targetos == 'haiku'
 636   socket = [cc.find_library('posix_error_mapper'),
 637             cc.find_library('network'),
 638             cc.find_library('bsd')]
 639 elif targetos == 'openbsd'
 640   if get_option('tcg').allowed() and target_dirs.length() > 0
 641     # Disable OpenBSD W^X if available
 642     emulator_link_args = cc.get_supported_link_arguments('-Wl,-z,wxneeded')
 643   endif
 644 endif
 645
 646 # Target-specific configuration of accelerators
 647 accelerators = []
 648 if get_option('kvm').allowed() and targetos == 'linux'
 649   accelerators += 'CONFIG_KVM'
 650 endif
 651 if get_option('whpx').allowed() and targetos == 'windows'
 652   if get_option('whpx').enabled() and host_machine.cpu() != 'x86_64'
 653     error('WHPX requires 64-bit host')
 654   elif cc.has_header('winhvplatform.h', required: get_option('whpx')) and \
 655        cc.has_header('winhvemulation.h', required: get_option('whpx'))
 656     accelerators += 'CONFIG_WHPX'
 657   endif
 658 endif
 659 if get_option('hvf').allowed()
 660   hvf = dependency('appleframeworks', modules: 'Hypervisor',
 661                    required: get_option('hvf'))
 662   if hvf.found()
 663     accelerators += 'CONFIG_HVF'
 664   endif
 665 endif
 666 if get_option('hax').allowed()
 667   if get_option('hax').enabled() or targetos in ['windows', 'darwin', 'netbsd']
 668     accelerators += 'CONFIG_HAX'
 669   endif
 670 endif
 671 if targetos == 'netbsd'
 672   nvmm = cc.find_library('nvmm', required: get_option('nvmm'))
 673   if nvmm.found()
 674     accelerators += 'CONFIG_NVMM'
 675   endif
 676 endif
 677
 678 tcg_arch = host_arch
 679 if get_option('tcg').allowed()
 680   if host_arch == 'unknown'
 681     if not get_option('tcg_interpreter')
 682       error('Unsupported CPU @0@, try --enable-tcg-interpreter'.format(cpu))
 683     endif
 684   elif get_option('tcg_interpreter')
 685     warning('Use of the TCG interpreter is not recommended on this host')
 686     warning('architecture. There is a native TCG execution backend available')
 687     warning('which provides substantially better performance and reliability.')
 688     warning('It is strongly recommended to remove the --enable-tcg-interpreter')
 689     warning('configuration option on this architecture to use the native')
 690     warning('backend.')
 691   endif
 692   if get_option('tcg_interpreter')
 693     tcg_arch = 'tci'
 694     config_host += { 'CONFIG_TCG_INTERPRETER': 'y' }
 695   elif host_arch == 'x86_64'
 696     tcg_arch = 'i386'
 697   elif host_arch == 'ppc64'
 698     tcg_arch = 'ppc'
 699   endif
 700   add_project_arguments('-iquote', meson.current_source_dir() / 'tcg' / tcg_arch,
 701                         language: all_languages)
 702
 703   accelerators += 'CONFIG_TCG'
 704   config_host += { 'CONFIG_TCG': 'y' }
 705 endif
 706
 707 if 'CONFIG_KVM' not in accelerators and get_option('kvm').enabled()
 708   error('KVM not available on this platform')
 709 endif
 710 if 'CONFIG_HVF' not in accelerators and get_option('hvf').enabled()
 711   error('HVF not available on this platform')
 712 endif
 713 if 'CONFIG_NVMM' not in accelerators and get_option('nvmm').enabled()
 714   error('NVMM not available on this platform')
 715 endif
 716 if 'CONFIG_WHPX' not in accelerators and get_option('whpx').enabled()
 717   error('WHPX not available on this platform')
 718 endif
 719
 720 ################
 721 # Dependencies #
 722 ################
 723
 724 # When bumping glib minimum version, please check also whether to increase
 725 # the _WIN32_WINNT setting in osdep.h according to the value from glib
 726 glib_req_ver = '>=2.56.0'
 727 glib_pc = dependency('glib-2.0', version: glib_req_ver, required: true,
 728                     method: 'pkg-config')
 729 glib_cflags = []
 730 if enable_modules
 731   gmodule = dependency('gmodule-export-2.0', version: glib_req_ver, required: true,
 732                        method: 'pkg-config')
 733 elif get_option('plugins')
 734   gmodule = dependency('gmodule-no-export-2.0', version: glib_req_ver, required: true,
 735                        method: 'pkg-config')
 736 else
 737   gmodule = not_found
 738 endif
 739
 740 # This workaround is required due to a bug in pkg-config file for glib as it
 741 # doesn't define GLIB_STATIC_COMPILATION for pkg-config --static
 742 if targetos == 'windows' and get_option('prefer_static')
 743   glib_cflags += ['-DGLIB_STATIC_COMPILATION']
 744 endif
 745
 746 # Sanity check that the current size_t matches the
 747 # size that glib thinks it should be. This catches
 748 # problems on multi-arch where people try to build
 749 # 32-bit QEMU while pointing at 64-bit glib headers
 750
 751 if not cc.compiles('''
 752   #include <glib.h>
 753   #include <unistd.h>
 754
 755   #define QEMU_BUILD_BUG_ON(x) \
 756   typedef char qemu_build_bug_on[(x)?-1:1] __attribute__((unused));
 757
 758   int main(void) {
 759      QEMU_BUILD_BUG_ON(sizeof(size_t) != GLIB_SIZEOF_SIZE_T);
 760      return 0;
 761   }''', dependencies: glib_pc, args: glib_cflags)
 762   error('''sizeof(size_t) doesn't match GLIB_SIZEOF_SIZE_T.
 763         You probably need to set PKG_CONFIG_LIBDIR" to point
 764         to the right pkg-config files for your build target.''')
 765 endif
 766
 767 # Silence clang warnings triggered by glib < 2.57.2
 768 if not cc.compiles('''
 769   #include <glib.h>
 770   typedef struct Foo {
 771     int i;
 772   } Foo;
 773   static void foo_free(Foo *f)
 774   {
 775     g_free(f);
 776   }
 777   G_DEFINE_AUTOPTR_CLEANUP_FUNC(Foo, foo_free)
 778   int main(void) { return 0; }''', dependencies: glib_pc, args: ['-Wunused-function', '-Werror'])
 779   glib_cflags += cc.get_supported_arguments('-Wno-unused-function')
 780 endif
 781 glib = declare_dependency(dependencies: [glib_pc, gmodule],
 782                           compile_args: glib_cflags,
 783                           version: glib_pc.version())
 784
 785 # Check whether glib has gslice, which we have to avoid for correctness.
 786 # TODO: remove this check and the corresponding workaround (qtree) when
 787 # the minimum supported glib is >= 2.75.3
 788 glib_has_gslice = glib.version().version_compare('<2.75.3')
 789
 790 # override glib dep to include the above refinements
 791 meson.override_dependency('glib-2.0', glib)
 792
 793 # The path to glib.h is added to all compilation commands.
 794 add_project_dependencies(glib.partial_dependency(compile_args: true, includes: true),
 795                          native: false, language: all_languages)
 796
 797 gio = not_found
 798 gdbus_codegen = not_found
 799 gdbus_codegen_error = '@0@ requires gdbus-codegen, please install libgio'
 800 if not get_option('gio').auto() or have_system
 801   gio = dependency('gio-2.0', required: get_option('gio'),
 802                    method: 'pkg-config')
 803   if gio.found() and not cc.links('''
 804     #include <gio/gio.h>
 805     int main(void)
 806     {
 807       g_dbus_proxy_new_sync(0, 0, 0, 0, 0, 0, 0, 0);
 808       return 0;
 809     }''', dependencies: [glib, gio])
 810     if get_option('gio').enabled()
 811       error('The installed libgio is broken for static linking')
 812     endif
 813     gio = not_found
 814   endif
 815   if gio.found()
 816     gdbus_codegen = find_program(gio.get_variable('gdbus_codegen'),
 817                                  required: get_option('gio'))
 818     gio_unix = dependency('gio-unix-2.0', required: get_option('gio'),
 819                           method: 'pkg-config')
 820     gio = declare_dependency(dependencies: [gio, gio_unix],
 821                              version: gio.version())
 822   endif
 823 endif
 824 if gdbus_codegen.found() and get_option('cfi')
 825   gdbus_codegen = not_found
 826   gdbus_codegen_error = '@0@ uses gdbus-codegen, which does not support control flow integrity'
 827 endif
 828
 829 xml_pp = find_program('scripts/xml-preprocess.py')
 830
 831 lttng = not_found
 832 if 'ust' in get_option('trace_backends')
 833   lttng = dependency('lttng-ust', required: true, version: '>= 2.1',
 834                      method: 'pkg-config')
 835 endif
 836 pixman = not_found
 837 if have_system or have_tools
 838   pixman = dependency('pixman-1', required: have_system, version:'>=0.21.8',
 839                       method: 'pkg-config')
 840 endif
 841 zlib = dependency('zlib', required: true)
 842
 843 libaio = not_found
 844 if not get_option('linux_aio').auto() or have_block
 845   libaio = cc.find_library('aio', has_headers: ['libaio.h'],
 846                            required: get_option('linux_aio'))
 847 endif
 848
 849 linux_io_uring_test = '''
 850   #include <liburing.h>
 851   #include <linux/errqueue.h>
 852
 853   int main(void) { return 0; }'''
 854
 855 linux_io_uring = not_found
 856 if not get_option('linux_io_uring').auto() or have_block
 857   linux_io_uring = dependency('liburing', version: '>=0.3',
 858                               required: get_option('linux_io_uring'),
 859                               method: 'pkg-config')
 860   if not cc.links(linux_io_uring_test)
 861     linux_io_uring = not_found
 862   endif
 863 endif
 864
 865 libnfs = not_found
 866 if not get_option('libnfs').auto() or have_block
 867   libnfs = dependency('libnfs', version: '>=1.9.3',
 868                       required: get_option('libnfs'),
 869                       method: 'pkg-config')
 870 endif
 871
 872 libattr_test = '''
 873   #include <stddef.h>
 874   #include <sys/types.h>
 875   #ifdef CONFIG_LIBATTR
 876   #include <attr/xattr.h>
 877   #else
 878   #include <sys/xattr.h>
 879   #endif
 880   int main(void) { getxattr(NULL, NULL, NULL, 0); setxattr(NULL, NULL, NULL, 0, 0); return 0; }'''
 881
 882 libattr = not_found
 883 have_old_libattr = false
 884 if get_option('attr').allowed()
 885   if cc.links(libattr_test)
 886     libattr = declare_dependency()
 887   else
 888     libattr = cc.find_library('attr', has_headers: ['attr/xattr.h'],
 889                               required: get_option('attr'))
 890     if libattr.found() and not \
 891       cc.links(libattr_test, dependencies: libattr, args: '-DCONFIG_LIBATTR')
 892       libattr = not_found
 893       if get_option('attr').enabled()
 894         error('could not link libattr')
 895       else
 896         warning('could not link libattr, disabling')
 897       endif
 898     else
 899       have_old_libattr = libattr.found()
 900     endif
 901   endif
 902 endif
 903
 904 cocoa = dependency('appleframeworks', modules: ['Cocoa', 'CoreVideo'],
 905                    required: get_option('cocoa'))
 906
 907 vmnet = dependency('appleframeworks', modules: 'vmnet', required: get_option('vmnet'))
 908 if vmnet.found() and not cc.has_header_symbol('vmnet/vmnet.h',
 909                                               'VMNET_BRIDGED_MODE',
 910                                               dependencies: vmnet)
 911   vmnet = not_found
 912   if get_option('vmnet').enabled()
 913     error('vmnet.framework API is outdated')
 914   else
 915     warning('vmnet.framework API is outdated, disabling')
 916   endif
 917 endif
 918
 919 seccomp = not_found
 920 seccomp_has_sysrawrc = false
 921 if not get_option('seccomp').auto() or have_system or have_tools
 922   seccomp = dependency('libseccomp', version: '>=2.3.0',
 923                        required: get_option('seccomp'),
 924                        method: 'pkg-config')
 925   if seccomp.found()
 926     seccomp_has_sysrawrc = cc.has_header_symbol('seccomp.h',
 927                                                 'SCMP_FLTATR_API_SYSRAWRC',
 928                                                 dependencies: seccomp)
 929   endif
 930 endif
 931
 932 libcap_ng = not_found
 933 if not get_option('cap_ng').auto() or have_system or have_tools
 934   libcap_ng = cc.find_library('cap-ng', has_headers: ['cap-ng.h'],
 935                               required: get_option('cap_ng'))
 936 endif
 937 if libcap_ng.found() and not cc.links('''
 938    #include <cap-ng.h>
 939    int main(void)
 940    {
 941      capng_capability_to_name(CAPNG_EFFECTIVE);
 942      return 0;
 943    }''', dependencies: libcap_ng)
 944   libcap_ng = not_found
 945   if get_option('cap_ng').enabled()
 946     error('could not link libcap-ng')
 947   else
 948     warning('could not link libcap-ng, disabling')
 949   endif
 950 endif
 951
 952 if get_option('xkbcommon').auto() and not have_system and not have_tools
 953   xkbcommon = not_found
 954 else
 955   xkbcommon = dependency('xkbcommon', required: get_option('xkbcommon'),
 956                          method: 'pkg-config')
 957 endif
 958
 959 slirp = not_found
 960 if not get_option('slirp').auto() or have_system
 961   slirp = dependency('slirp', required: get_option('slirp'),
 962                      method: 'pkg-config')
 963   # slirp < 4.7 is incompatible with CFI support in QEMU.  This is because
 964   # it passes function pointers within libslirp as callbacks for timers.
 965   # When using a system-wide shared libslirp, the type information for the
 966   # callback is missing and the timer call produces a false positive with CFI.
 967   # Do not use the "version" keyword argument to produce a better error.
 968   # with control-flow integrity.
 969   if get_option('cfi') and slirp.found() and slirp.version().version_compare('<4.7')
 970     if get_option('slirp').enabled()
 971       error('Control-Flow Integrity requires libslirp 4.7.')
 972     else
 973       warning('Cannot use libslirp since Control-Flow Integrity requires libslirp >= 4.7.')
 974       slirp = not_found
 975     endif
 976   endif
 977 endif
 978
 979 vde = not_found
 980 if not get_option('vde').auto() or have_system or have_tools
 981   vde = cc.find_library('vdeplug', has_headers: ['libvdeplug.h'],
 982                            required: get_option('vde'))
 983 endif
 984 if vde.found() and not cc.links('''
 985    #include <libvdeplug.h>
 986    int main(void)
 987    {
 988      struct vde_open_args a = {0, 0, 0};
 989      char s[] = "";
 990      vde_open(s, s, &a);
 991      return 0;
 992    }''', dependencies: vde)
 993   vde = not_found
 994   if get_option('cap_ng').enabled()
 995     error('could not link libvdeplug')
 996   else
 997     warning('could not link libvdeplug, disabling')
 998   endif
 999 endif
1000
1001 pulse = not_found
1002 if not get_option('pa').auto() or (targetos == 'linux' and have_system)
1003   pulse = dependency('libpulse', required: get_option('pa'),
1004                      method: 'pkg-config')
1005 endif
1006 alsa = not_found
1007 if not get_option('alsa').auto() or (targetos == 'linux' and have_system)
1008   alsa = dependency('alsa', required: get_option('alsa'),
1009                     method: 'pkg-config')
1010 endif
1011 jack = not_found
1012 if not get_option('jack').auto() or have_system
1013   jack = dependency('jack', required: get_option('jack'),
1014                     method: 'pkg-config')
1015 endif
1016 pipewire = not_found
1017 if not get_option('pipewire').auto() or (targetos == 'linux' and have_system)
1018   pipewire = dependency('libpipewire-0.3', version: '>=0.3.60',
1019                     required: get_option('pipewire'),
1020                     method: 'pkg-config')
1021 endif
1022 sndio = not_found
1023 if not get_option('sndio').auto() or have_system
1024   sndio = dependency('sndio', required: get_option('sndio'),
1025                     method: 'pkg-config')
1026 endif
1027
1028 spice_protocol = not_found
1029 if not get_option('spice_protocol').auto() or have_system
1030   spice_protocol = dependency('spice-protocol', version: '>=0.14.0',
1031                               required: get_option('spice_protocol'),
1032                               method: 'pkg-config')
1033 endif
1034 spice = not_found
1035 if not get_option('spice').auto() or have_system
1036   spice = dependency('spice-server', version: '>=0.14.0',
1037                      required: get_option('spice'),
1038                      method: 'pkg-config')
1039 endif
1040 spice_headers = spice.partial_dependency(compile_args: true, includes: true)
1041
1042 rt = cc.find_library('rt', required: false)
1043
1044 libiscsi = not_found
1045 if not get_option('libiscsi').auto() or have_block
1046   libiscsi = dependency('libiscsi', version: '>=1.9.0',
1047                          required: get_option('libiscsi'),
1048                          method: 'pkg-config')
1049 endif
1050 zstd = not_found
1051 if not get_option('zstd').auto() or have_block
1052   zstd = dependency('libzstd', version: '>=1.4.0',
1053                     required: get_option('zstd'),
1054                     method: 'pkg-config')
1055 endif
1056 virgl = not_found
1057
1058 have_vhost_user_gpu = have_tools and targetos == 'linux' and pixman.found()
1059 if not get_option('virglrenderer').auto() or have_system or have_vhost_user_gpu
1060   virgl = dependency('virglrenderer',
1061                      method: 'pkg-config',
1062                      required: get_option('virglrenderer'))
1063   if virgl.found()
1064     config_host_data.set('HAVE_VIRGL_D3D_INFO_EXT',
1065                          cc.has_member('struct virgl_renderer_resource_info_ext', 'd3d_tex2d',
1066                                        prefix: '#include <virglrenderer.h>',
1067                                        dependencies: virgl))
1068   endif
1069 endif
1070 blkio = not_found
1071 if not get_option('blkio').auto() or have_block
1072   blkio = dependency('blkio',
1073                      method: 'pkg-config',
1074                      required: get_option('blkio'))
1075 endif
1076 curl = not_found
1077 if not get_option('curl').auto() or have_block
1078   curl = dependency('libcurl', version: '>=7.29.0',
1079                     method: 'pkg-config',
1080                     required: get_option('curl'))
1081 endif
1082 libudev = not_found
1083 if targetos == 'linux' and (have_system or have_tools)
1084   libudev = dependency('libudev',
1085                        method: 'pkg-config',
1086                        required: get_option('libudev'))
1087 endif
1088
1089 mpathlibs = [libudev]
1090 mpathpersist = not_found
1091 if targetos == 'linux' and have_tools and get_option('mpath').allowed()
1092   mpath_test_source = '''
1093     #include <libudev.h>
1094     #include <mpath_persist.h>
1095     unsigned mpath_mx_alloc_len = 1024;
1096     int logsink;
1097     static struct config *multipath_conf;
1098     extern struct udev *udev;
1099     extern struct config *get_multipath_config(void);
1100     extern void put_multipath_config(struct config *conf);
1101     struct udev *udev;
1102     struct config *get_multipath_config(void) { return multipath_conf; }
1103     void put_multipath_config(struct config *conf) { }
1104     int main(void) {
1105         udev = udev_new();
1106         multipath_conf = mpath_lib_init();
1107         return 0;
1108     }'''
1109   libmpathpersist = cc.find_library('mpathpersist',
1110                                     required: get_option('mpath'))
1111   if libmpathpersist.found()
1112     mpathlibs += libmpathpersist
1113     if get_option('prefer_static')
1114       mpathlibs += cc.find_library('devmapper',
1115                                      required: get_option('mpath'))
1116     endif
1117     mpathlibs += cc.find_library('multipath',
1118                                  required: get_option('mpath'))
1119     foreach lib: mpathlibs
1120       if not lib.found()
1121         mpathlibs = []
1122         break
1123       endif
1124     endforeach
1125     if mpathlibs.length() == 0
1126       msg = 'Dependencies missing for libmpathpersist'
1127     elif cc.links(mpath_test_source, dependencies: mpathlibs)
1128       mpathpersist = declare_dependency(dependencies: mpathlibs)
1129     else
1130       msg = 'Cannot detect libmpathpersist API'
1131     endif
1132     if not mpathpersist.found()
1133       if get_option('mpath').enabled()
1134         error(msg)
1135       else
1136         warning(msg + ', disabling')
1137       endif
1138     endif
1139   endif
1140 endif
1141
1142 iconv = not_found
1143 curses = not_found
1144 if have_system and get_option('curses').allowed()
1145   curses_test = '''
1146     #if defined(__APPLE__) || defined(__OpenBSD__)
1147     #define _XOPEN_SOURCE_EXTENDED 1
1148     #endif
1149     #include <locale.h>
1150     #include <curses.h>
1151     #include <wchar.h>
1152     int main(void) {
1153       wchar_t wch = L'w';
1154       setlocale(LC_ALL, "");
1155       resize_term(0, 0);
1156       addwstr(L"wide chars\n");
1157       addnwstr(&wch, 1);
1158       add_wch(WACS_DEGREE);
1159       return 0;
1160     }'''
1161
1162   curses_dep_list = targetos == 'windows' ? ['ncurses', 'ncursesw'] : ['ncursesw']
1163   curses = dependency(curses_dep_list,
1164                       required: false,
1165                       method: 'pkg-config')
1166   msg = get_option('curses').enabled() ? 'curses library not found' : ''
1167   curses_compile_args = ['-DNCURSES_WIDECHAR=1']
1168   if curses.found()
1169     if cc.links(curses_test, args: curses_compile_args, dependencies: [curses])
1170       curses = declare_dependency(compile_args: curses_compile_args, dependencies: [curses],
1171                                   version: curses.version())
1172     else
1173       msg = 'curses package not usable'
1174       curses = not_found
1175     endif
1176   endif
1177   if not curses.found()
1178     has_curses_h = cc.has_header('curses.h', args: curses_compile_args)
1179     if targetos != 'windows' and not has_curses_h
1180       message('Trying with /usr/include/ncursesw')
1181       curses_compile_args += ['-I/usr/include/ncursesw']
1182       has_curses_h = cc.has_header('curses.h', args: curses_compile_args)
1183     endif
1184     if has_curses_h
1185       curses_libname_list = (targetos == 'windows' ? ['pdcurses'] : ['ncursesw', 'cursesw'])
1186       foreach curses_libname : curses_libname_list
1187         libcurses = cc.find_library(curses_libname,
1188                                     required: false)
1189         if libcurses.found()
1190           if cc.links(curses_test, args: curses_compile_args, dependencies: libcurses)
1191             curses = declare_dependency(compile_args: curses_compile_args,
1192                                         dependencies: [libcurses])
1193             break
1194           else
1195             msg = 'curses library not usable'
1196           endif
1197         endif
1198       endforeach
1199     endif
1200   endif
1201   if get_option('iconv').allowed()
1202     foreach link_args : [ ['-liconv'], [] ]
1203       # Programs will be linked with glib and this will bring in libiconv on FreeBSD.
1204       # We need to use libiconv if available because mixing libiconv's headers with
1205       # the system libc does not work.
1206       # However, without adding glib to the dependencies -L/usr/local/lib will not be
1207       # included in the command line and libiconv will not be found.
1208       if cc.links('''
1209         #include <iconv.h>
1210         int main(void) {
1211           iconv_t conv = iconv_open("WCHAR_T", "UCS-2");
1212           return conv != (iconv_t) -1;
1213         }''', args: link_args, dependencies: glib)
1214         iconv = declare_dependency(link_args: link_args, dependencies: glib)
1215         break
1216       endif
1217     endforeach
1218   endif
1219   if curses.found() and not iconv.found()
1220     if get_option('iconv').enabled()
1221       error('iconv not available')
1222     endif
1223     msg = 'iconv required for curses UI but not available'
1224     curses = not_found
1225   endif
1226   if not curses.found() and msg != ''
1227     if get_option('curses').enabled()
1228       error(msg)
1229     else
1230       warning(msg + ', disabling')
1231     endif
1232   endif
1233 endif
1234
1235 brlapi = not_found
1236 if not get_option('brlapi').auto() or have_system
1237   brlapi = cc.find_library('brlapi', has_headers: ['brlapi.h'],
1238                          required: get_option('brlapi'))
1239   if brlapi.found() and not cc.links('''
1240      #include <brlapi.h>
1241      #include <stddef.h>
1242      int main(void) { return brlapi__openConnection (NULL, NULL, NULL); }''', dependencies: brlapi)
1243     brlapi = not_found
1244     if get_option('brlapi').enabled()
1245       error('could not link brlapi')
1246     else
1247       warning('could not link brlapi, disabling')
1248     endif
1249   endif
1250 endif
1251
1252 sdl = not_found
1253 if not get_option('sdl').auto() or have_system
1254   sdl = dependency('sdl2', required: get_option('sdl'))
1255   sdl_image = not_found
1256 endif
1257 if sdl.found()
1258   # Some versions of SDL have problems with -Wundef
1259   if not cc.compiles('''
1260                      #include <SDL.h>
1261                      #include <SDL_syswm.h>
1262                      int main(int argc, char *argv[]) { return 0; }
1263                      ''', dependencies: sdl, args: '-Werror=undef')
1264     sdl = declare_dependency(compile_args: '-Wno-undef',
1265                              dependencies: sdl,
1266                              version: sdl.version())
1267   endif
1268   sdl_image = dependency('SDL2_image', required: get_option('sdl_image'),
1269                          method: 'pkg-config')
1270 else
1271   if get_option('sdl_image').enabled()
1272     error('sdl-image required, but SDL was @0@'.format(
1273           get_option('sdl').disabled() ? 'disabled' : 'not found'))
1274   endif
1275   sdl_image = not_found
1276 endif
1277
1278 rbd = not_found
1279 if not get_option('rbd').auto() or have_block
1280   librados = cc.find_library('rados', required: get_option('rbd'))
1281   librbd = cc.find_library('rbd', has_headers: ['rbd/librbd.h'],
1282                            required: get_option('rbd'))
1283   if librados.found() and librbd.found()
1284     if cc.links('''
1285       #include <stdio.h>
1286       #include <rbd/librbd.h>
1287       int main(void) {
1288         rados_t cluster;
1289         rados_create(&cluster, NULL);
1290         #if LIBRBD_VERSION_CODE < LIBRBD_VERSION(1, 12, 0)
1291         #error
1292         #endif
1293         return 0;
1294       }''', dependencies: [librbd, librados])
1295       rbd = declare_dependency(dependencies: [librbd, librados])
1296     elif get_option('rbd').enabled()
1297       error('librbd >= 1.12.0 required')
1298     else
1299       warning('librbd >= 1.12.0 not found, disabling')
1300     endif
1301   endif
1302 endif
1303
1304 glusterfs = not_found
1305 glusterfs_ftruncate_has_stat = false
1306 glusterfs_iocb_has_stat = false
1307 if not get_option('glusterfs').auto() or have_block
1308   glusterfs = dependency('glusterfs-api', version: '>=3',
1309                          required: get_option('glusterfs'),
1310                          method: 'pkg-config')
1311   if glusterfs.found()
1312     glusterfs_ftruncate_has_stat = cc.links('''
1313       #include <glusterfs/api/glfs.h>
1314
1315       int
1316       main(void)
1317       {
1318           /* new glfs_ftruncate() passes two additional args */
1319           return glfs_ftruncate(NULL, 0, NULL, NULL);
1320       }
1321     ''', dependencies: glusterfs)
1322     glusterfs_iocb_has_stat = cc.links('''
1323       #include <glusterfs/api/glfs.h>
1324
1325       /* new glfs_io_cbk() passes two additional glfs_stat structs */
1326       static void
1327       glusterfs_iocb(glfs_fd_t *fd, ssize_t ret, struct glfs_stat *prestat, struct glfs_stat *poststat, void *data)
1328       {}
1329
1330       int
1331       main(void)
1332       {
1333           glfs_io_cbk iocb = &glusterfs_iocb;
1334           iocb(NULL, 0 , NULL, NULL, NULL);
1335           return 0;
1336       }
1337     ''', dependencies: glusterfs)
1338   endif
1339 endif
1340
1341 libssh = not_found
1342 if not get_option('libssh').auto() or have_block
1343   libssh = dependency('libssh', version: '>=0.8.7',
1344                     method: 'pkg-config',
1345                     required: get_option('libssh'))
1346 endif
1347
1348 libbzip2 = not_found
1349 if not get_option('bzip2').auto() or have_block
1350   libbzip2 = cc.find_library('bz2', has_headers: ['bzlib.h'],
1351                              required: get_option('bzip2'))
1352   if libbzip2.found() and not cc.links('''
1353      #include <bzlib.h>
1354      int main(void) { BZ2_bzlibVersion(); return 0; }''', dependencies: libbzip2)
1355     libbzip2 = not_found
1356     if get_option('bzip2').enabled()
1357       error('could not link libbzip2')
1358     else
1359       warning('could not link libbzip2, disabling')
1360     endif
1361   endif
1362 endif
1363
1364 liblzfse = not_found
1365 if not get_option('lzfse').auto() or have_block
1366   liblzfse = cc.find_library('lzfse', has_headers: ['lzfse.h'],
1367                              required: get_option('lzfse'))
1368 endif
1369 if liblzfse.found() and not cc.links('''
1370    #include <lzfse.h>
1371    int main(void) { lzfse_decode_scratch_size(); return 0; }''', dependencies: liblzfse)
1372   liblzfse = not_found
1373   if get_option('lzfse').enabled()
1374     error('could not link liblzfse')
1375   else
1376     warning('could not link liblzfse, disabling')
1377   endif
1378 endif
1379
1380 oss = not_found
1381 if get_option('oss').allowed() and have_system
1382   if not cc.has_header('sys/soundcard.h')
1383     # not found
1384   elif targetos == 'netbsd'
1385     oss = cc.find_library('ossaudio', required: get_option('oss'))
1386   else
1387     oss = declare_dependency()
1388   endif
1389
1390   if not oss.found()
1391     if get_option('oss').enabled()
1392       error('OSS not found')
1393     endif
1394   endif
1395 endif
1396 dsound = not_found
1397 if not get_option('dsound').auto() or (targetos == 'windows' and have_system)
1398   if cc.has_header('dsound.h')
1399     dsound = declare_dependency(link_args: ['-lole32', '-ldxguid'])
1400   endif
1401
1402   if not dsound.found()
1403     if get_option('dsound').enabled()
1404       error('DirectSound not found')
1405     endif
1406   endif
1407 endif
1408
1409 coreaudio = not_found
1410 if not get_option('coreaudio').auto() or (targetos == 'darwin' and have_system)
1411   coreaudio = dependency('appleframeworks', modules: 'CoreAudio',
1412                          required: get_option('coreaudio'))
1413 endif
1414
1415 opengl = not_found
1416 if not get_option('opengl').auto() or have_system or have_vhost_user_gpu
1417   epoxy = dependency('epoxy', method: 'pkg-config',
1418                       required: get_option('opengl'))
1419   if cc.has_header('epoxy/egl.h', dependencies: epoxy)
1420     opengl = epoxy
1421   elif get_option('opengl').enabled()
1422     error('epoxy/egl.h not found')
1423   endif
1424 endif
1425 gbm = not_found
1426 if (have_system or have_tools) and (virgl.found() or opengl.found())
1427   gbm = dependency('gbm', method: 'pkg-config', required: false)
1428 endif
1429 have_vhost_user_gpu = have_vhost_user_gpu and virgl.found() and opengl.found() and gbm.found()
1430
1431 gnutls = not_found
1432 gnutls_crypto = not_found
1433 if get_option('gnutls').enabled() or (get_option('gnutls').auto() and have_system)
1434   # For general TLS support our min gnutls matches
1435   # that implied by our platform support matrix
1436   #
1437   # For the crypto backends, we look for a newer
1438   # gnutls:
1439   #
1440   #   Version 3.6.8  is needed to get XTS
1441   #   Version 3.6.13 is needed to get PBKDF
1442   #   Version 3.6.14 is needed to get HW accelerated XTS
1443   #
1444   # If newer enough gnutls isn't available, we can
1445   # still use a different crypto backend to satisfy
1446   # the platform support requirements
1447   gnutls_crypto = dependency('gnutls', version: '>=3.6.14',
1448                              method: 'pkg-config',
1449                              required: false)
1450   if gnutls_crypto.found()
1451     gnutls = gnutls_crypto
1452   else
1453     # Our min version if all we need is TLS
1454     gnutls = dependency('gnutls', version: '>=3.5.18',
1455                         method: 'pkg-config',
1456                         required: get_option('gnutls'))
1457   endif
1458 endif
1459
1460 # We prefer use of gnutls for crypto, unless the options
1461 # explicitly asked for nettle or gcrypt.
1462 #
1463 # If gnutls isn't available for crypto, then we'll prefer
1464 # gcrypt over nettle for performance reasons.
1465 gcrypt = not_found
1466 nettle = not_found
1467 hogweed = not_found
1468 xts = 'none'
1469
1470 if get_option('nettle').enabled() and get_option('gcrypt').enabled()
1471   error('Only one of gcrypt & nettle can be enabled')
1472 endif
1473
1474 # Explicit nettle/gcrypt request, so ignore gnutls for crypto
1475 if get_option('nettle').enabled() or get_option('gcrypt').enabled()
1476   gnutls_crypto = not_found
1477 endif
1478
1479 if not gnutls_crypto.found()
1480   if (not get_option('gcrypt').auto() or have_system) and not get_option('nettle').enabled()
1481     gcrypt = dependency('libgcrypt', version: '>=1.8',
1482                         method: 'config-tool',
1483                         required: get_option('gcrypt'))
1484     # Debian has removed -lgpg-error from libgcrypt-config
1485     # as it "spreads unnecessary dependencies" which in
1486     # turn breaks static builds...
1487     if gcrypt.found() and get_option('prefer_static')
1488       gcrypt = declare_dependency(dependencies:
1489         [gcrypt,
1490          cc.find_library('gpg-error', required: true)],
1491         version: gcrypt.version())
1492     endif
1493   endif
1494   if (not get_option('nettle').auto() or have_system) and not gcrypt.found()
1495     nettle = dependency('nettle', version: '>=3.4',
1496                         method: 'pkg-config',
1497                         required: get_option('nettle'))
1498     if nettle.found() and not cc.has_header('nettle/xts.h', dependencies: nettle)
1499       xts = 'private'
1500     endif
1501   endif
1502 endif
1503
1504 gmp = dependency('gmp', required: false, method: 'pkg-config')
1505 if nettle.found() and gmp.found()
1506   hogweed = dependency('hogweed', version: '>=3.4',
1507                        method: 'pkg-config',
1508                        required: get_option('nettle'))
1509 endif
1510
1511
1512 gtk = not_found
1513 gtkx11 = not_found
1514 vte = not_found
1515 have_gtk_clipboard = get_option('gtk_clipboard').enabled()
1516
1517 if not get_option('gtk').auto() or have_system
1518   gtk = dependency('gtk+-3.0', version: '>=3.22.0',
1519                    method: 'pkg-config',
1520                    required: get_option('gtk'))
1521   if gtk.found()
1522     gtkx11 = dependency('gtk+-x11-3.0', version: '>=3.22.0',
1523                         method: 'pkg-config',
1524                         required: false)
1525     gtk = declare_dependency(dependencies: [gtk, gtkx11],
1526                              version: gtk.version())
1527
1528     if not get_option('vte').auto() or have_system
1529       vte = dependency('vte-2.91',
1530                        method: 'pkg-config',
1531                        required: get_option('vte'))
1532     endif
1533   elif have_gtk_clipboard
1534     error('GTK clipboard requested, but GTK not found')
1535   endif
1536 endif
1537
1538 x11 = not_found
1539 if gtkx11.found()
1540   x11 = dependency('x11', method: 'pkg-config', required: gtkx11.found())
1541 endif
1542 png = not_found
1543 if get_option('png').allowed() and have_system
1544    png = dependency('libpng', version: '>=1.6.34', required: get_option('png'),
1545                     method: 'pkg-config')
1546 endif
1547 vnc = not_found
1548 jpeg = not_found
1549 sasl = not_found
1550 if get_option('vnc').allowed() and have_system
1551   vnc = declare_dependency() # dummy dependency
1552   jpeg = dependency('libjpeg', required: get_option('vnc_jpeg'),
1553                     method: 'pkg-config')
1554   sasl = cc.find_library('sasl2', has_headers: ['sasl/sasl.h'],
1555                          required: get_option('vnc_sasl'))
1556   if sasl.found()
1557     sasl = declare_dependency(dependencies: sasl,
1558                               compile_args: '-DSTRUCT_IOVEC_DEFINED')
1559   endif
1560 endif
1561
1562 pam = not_found
1563 if not get_option('auth_pam').auto() or have_system
1564   pam = cc.find_library('pam', has_headers: ['security/pam_appl.h'],
1565                         required: get_option('auth_pam'))
1566 endif
1567 if pam.found() and not cc.links('''
1568    #include <stddef.h>
1569    #include <security/pam_appl.h>
1570    int main(void) {
1571      const char *service_name = "qemu";
1572      const char *user = "frank";
1573      const struct pam_conv pam_conv = { 0 };
1574      pam_handle_t *pamh = NULL;
1575      pam_start(service_name, user, &pam_conv, &pamh);
1576      return 0;
1577    }''', dependencies: pam)
1578   pam = not_found
1579   if get_option('auth_pam').enabled()
1580     error('could not link libpam')
1581   else
1582     warning('could not link libpam, disabling')
1583   endif
1584 endif
1585
1586 snappy = not_found
1587 if not get_option('snappy').auto() or have_system
1588   snappy = cc.find_library('snappy', has_headers: ['snappy-c.h'],
1589                            required: get_option('snappy'))
1590 endif
1591 if snappy.found() and not cc.links('''
1592    #include <snappy-c.h>
1593    int main(void) { snappy_max_compressed_length(4096); return 0; }''', dependencies: snappy)
1594   snappy = not_found
1595   if get_option('snappy').enabled()
1596     error('could not link libsnappy')
1597   else
1598     warning('could not link libsnappy, disabling')
1599   endif
1600 endif
1601
1602 lzo = not_found
1603 if not get_option('lzo').auto() or have_system
1604   lzo = cc.find_library('lzo2', has_headers: ['lzo/lzo1x.h'],
1605                         required: get_option('lzo'))
1606 endif
1607 if lzo.found() and not cc.links('''
1608    #include <lzo/lzo1x.h>
1609    int main(void) { lzo_version(); return 0; }''', dependencies: lzo)
1610   lzo = not_found
1611   if get_option('lzo').enabled()
1612     error('could not link liblzo2')
1613   else
1614     warning('could not link liblzo2, disabling')
1615   endif
1616 endif
1617
1618 numa = not_found
1619 if not get_option('numa').auto() or have_system or have_tools
1620   numa = cc.find_library('numa', has_headers: ['numa.h'],
1621                               required: get_option('numa'))
1622 endif
1623 if numa.found() and not cc.links('''
1624    #include <numa.h>
1625    int main(void) { return numa_available(); }
1626    ''', dependencies: numa)
1627   numa = not_found
1628   if get_option('numa').enabled()
1629     error('could not link numa')
1630   else
1631     warning('could not link numa, disabling')
1632   endif
1633 endif
1634
1635 rdma = not_found
1636 if not get_option('rdma').auto() or have_system
1637   libumad = cc.find_library('ibumad', required: get_option('rdma'))
1638   rdma_libs = [cc.find_library('rdmacm', has_headers: ['rdma/rdma_cma.h'],
1639                                required: get_option('rdma')),
1640                cc.find_library('ibverbs', required: get_option('rdma')),
1641                libumad]
1642   rdma = declare_dependency(dependencies: rdma_libs)
1643   foreach lib: rdma_libs
1644     if not lib.found()
1645       rdma = not_found
1646     endif
1647   endforeach
1648 endif
1649
1650 xen = not_found
1651 if get_option('xen').enabled() or (get_option('xen').auto() and have_system)
1652   xencontrol = dependency('xencontrol', required: false,
1653                           method: 'pkg-config')
1654   if xencontrol.found()
1655     xen_pc = declare_dependency(version: xencontrol.version(),
1656       dependencies: [
1657         xencontrol,
1658         # disabler: true makes xen_pc.found() return false if any is not found
1659         dependency('xenstore', required: false,
1660                    method: 'pkg-config',
1661                    disabler: true),
1662         dependency('xenforeignmemory', required: false,
1663                    method: 'pkg-config',
1664                    disabler: true),
1665         dependency('xengnttab', required: false,
1666                    method: 'pkg-config',
1667                    disabler: true),
1668         dependency('xenevtchn', required: false,
1669                    method: 'pkg-config',
1670                    disabler: true),
1671         dependency('xendevicemodel', required: false,
1672                    method: 'pkg-config',
1673                    disabler: true),
1674         # optional, no "disabler: true"
1675         dependency('xentoolcore', required: false,
1676                    method: 'pkg-config')])
1677     if xen_pc.found()
1678       xen = xen_pc
1679     endif
1680   endif
1681   if not xen.found()
1682     xen_tests = [ '4.11.0', '4.10.0', '4.9.0', '4.8.0', '4.7.1' ]
1683     xen_libs = {
1684       '4.11.0': [ 'xenstore', 'xenctrl', 'xendevicemodel', 'xenforeignmemory', 'xengnttab', 'xenevtchn', 'xentoolcore' ],
1685       '4.10.0': [ 'xenstore', 'xenctrl', 'xendevicemodel', 'xenforeignmemory', 'xengnttab', 'xenevtchn', 'xentoolcore' ],
1686       '4.9.0': [ 'xenstore', 'xenctrl', 'xendevicemodel', 'xenforeignmemory', 'xengnttab', 'xenevtchn' ],
1687       '4.8.0': [ 'xenstore', 'xenctrl', 'xenforeignmemory', 'xengnttab', 'xenevtchn' ],
1688       '4.7.1': [ 'xenstore', 'xenctrl', 'xenforeignmemory', 'xengnttab', 'xenevtchn' ],
1689     }
1690     xen_deps = {}
1691     foreach ver: xen_tests
1692       # cache the various library tests to avoid polluting the logs
1693       xen_test_deps = []
1694       foreach l: xen_libs[ver]
1695         if l not in xen_deps
1696           xen_deps += { l: cc.find_library(l, required: false) }
1697         endif
1698         xen_test_deps += xen_deps[l]
1699       endforeach
1700
1701       # Use -D to pick just one of the test programs in scripts/xen-detect.c
1702       xen_version = ver.split('.')
1703       xen_ctrl_version = xen_version[0] + \
1704         ('0' + xen_version[1]).substring(-2) + \
1705         ('0' + xen_version[2]).substring(-2)
1706       if cc.links(files('scripts/xen-detect.c'),
1707                   args: '-DCONFIG_XEN_CTRL_INTERFACE_VERSION=' + xen_ctrl_version,
1708                   dependencies: xen_test_deps)
1709         xen = declare_dependency(version: ver, dependencies: xen_test_deps)
1710         break
1711       endif
1712     endforeach
1713   endif
1714   if xen.found()
1715     accelerators += 'CONFIG_XEN'
1716   elif get_option('xen').enabled()
1717     error('could not compile and link Xen test program')
1718   endif
1719 endif
1720 have_xen_pci_passthrough = get_option('xen_pci_passthrough') \
1721   .require(xen.found(),
1722            error_message: 'Xen PCI passthrough requested but Xen not enabled') \
1723   .require(targetos == 'linux',
1724            error_message: 'Xen PCI passthrough not available on this platform') \
1725   .require(cpu == 'x86'  or cpu == 'x86_64',
1726            error_message: 'Xen PCI passthrough not available on this platform') \
1727   .allowed()
1728
1729
1730 cacard = not_found
1731 if not get_option('smartcard').auto() or have_system
1732   cacard = dependency('libcacard', required: get_option('smartcard'),
1733                       version: '>=2.5.1', method: 'pkg-config')
1734 endif
1735 u2f = not_found
1736 if have_system
1737   u2f = dependency('u2f-emu', required: get_option('u2f'),
1738                    method: 'pkg-config')
1739 endif
1740 canokey = not_found
1741 if have_system
1742   canokey = dependency('canokey-qemu', required: get_option('canokey'),
1743                    method: 'pkg-config')
1744 endif
1745 usbredir = not_found
1746 if not get_option('usb_redir').auto() or have_system
1747   usbredir = dependency('libusbredirparser-0.5', required: get_option('usb_redir'),
1748                         version: '>=0.6', method: 'pkg-config')
1749 endif
1750 libusb = not_found
1751 if not get_option('libusb').auto() or have_system
1752   libusb = dependency('libusb-1.0', required: get_option('libusb'),
1753                       version: '>=1.0.13', method: 'pkg-config')
1754 endif
1755
1756 libpmem = not_found
1757 if not get_option('libpmem').auto() or have_system
1758   libpmem = dependency('libpmem', required: get_option('libpmem'),
1759                        method: 'pkg-config')
1760 endif
1761 libdaxctl = not_found
1762 if not get_option('libdaxctl').auto() or have_system
1763   libdaxctl = dependency('libdaxctl', required: get_option('libdaxctl'),
1764                          version: '>=57', method: 'pkg-config')
1765 endif
1766 tasn1 = not_found
1767 if gnutls.found()
1768   tasn1 = dependency('libtasn1',
1769                      method: 'pkg-config')
1770 endif
1771 keyutils = not_found
1772 if get_option('keyring').enabled()
1773   keyutils = dependency('libkeyutils', required: false, method: 'pkg-config')
1774 endif
1775
1776 has_gettid = cc.has_function('gettid')
1777
1778 # libselinux
1779 selinux = dependency('libselinux',
1780                      required: get_option('selinux'),
1781                      method: 'pkg-config')
1782
1783 # Malloc tests
1784
1785 malloc = []
1786 if get_option('malloc') == 'system'
1787   has_malloc_trim = \
1788     get_option('malloc_trim').allowed() and \
1789     cc.has_function('malloc_trim', prefix: '#include <malloc.h>')
1790 else
1791   has_malloc_trim = false
1792   malloc = cc.find_library(get_option('malloc'), required: true)
1793 endif
1794 if not has_malloc_trim and get_option('malloc_trim').enabled()
1795   if get_option('malloc') == 'system'
1796     error('malloc_trim not available on this platform.')
1797   else
1798     error('malloc_trim not available with non-libc memory allocator')
1799   endif
1800 endif
1801
1802 gnu_source_prefix = '''
1803   #ifndef _GNU_SOURCE
1804   #define _GNU_SOURCE
1805   #endif
1806 '''
1807
1808 # Check whether the glibc provides STATX_BASIC_STATS
1809
1810 has_statx = cc.has_header_symbol('sys/stat.h', 'STATX_BASIC_STATS', prefix: gnu_source_prefix)
1811
1812 # Check whether statx() provides mount ID information
1813
1814 has_statx_mnt_id = cc.has_header_symbol('sys/stat.h', 'STATX_MNT_ID', prefix: gnu_source_prefix)
1815
1816 have_vhost_user_blk_server = get_option('vhost_user_blk_server') \
1817   .require(targetos == 'linux',
1818            error_message: 'vhost_user_blk_server requires linux') \
1819   .require(have_vhost_user,
1820            error_message: 'vhost_user_blk_server requires vhost-user support') \
1821   .disable_auto_if(not have_tools and not have_system) \
1822   .allowed()
1823
1824 if get_option('fuse').disabled() and get_option('fuse_lseek').enabled()
1825   error('Cannot enable fuse-lseek while fuse is disabled')
1826 endif
1827
1828 fuse = dependency('fuse3', required: get_option('fuse'),
1829                   version: '>=3.1', method: 'pkg-config')
1830
1831 fuse_lseek = not_found
1832 if get_option('fuse_lseek').allowed()
1833   if fuse.version().version_compare('>=3.8')
1834     # Dummy dependency
1835     fuse_lseek = declare_dependency()
1836   elif get_option('fuse_lseek').enabled()
1837     if fuse.found()
1838       error('fuse-lseek requires libfuse >=3.8, found ' + fuse.version())
1839     else
1840       error('fuse-lseek requires libfuse, which was not found')
1841     endif
1842   endif
1843 endif
1844
1845 have_libvduse = (targetos == 'linux')
1846 if get_option('libvduse').enabled()
1847     if targetos != 'linux'
1848         error('libvduse requires linux')
1849     endif
1850 elif get_option('libvduse').disabled()
1851     have_libvduse = false
1852 endif
1853
1854 have_vduse_blk_export = (have_libvduse and targetos == 'linux')
1855 if get_option('vduse_blk_export').enabled()
1856     if targetos != 'linux'
1857         error('vduse_blk_export requires linux')
1858     elif not have_libvduse
1859         error('vduse_blk_export requires libvduse support')
1860     endif
1861 elif get_option('vduse_blk_export').disabled()
1862     have_vduse_blk_export = false
1863 endif
1864
1865 # libbpf
1866 libbpf = dependency('libbpf', required: get_option('bpf'), method: 'pkg-config')
1867 if libbpf.found() and not cc.links('''
1868    #include <bpf/libbpf.h>
1869    int main(void)
1870    {
1871      bpf_object__destroy_skeleton(NULL);
1872      return 0;
1873    }''', dependencies: libbpf)
1874   libbpf = not_found
1875   if get_option('bpf').enabled()
1876     error('libbpf skeleton test failed')
1877   else
1878     warning('libbpf skeleton test failed, disabling')
1879   endif
1880 endif
1881
1882 # libdw
1883 libdw = not_found
1884 if not get_option('libdw').auto() or \
1885         (not get_option('prefer_static') and (have_system or have_user))
1886     libdw = dependency('libdw',
1887                        method: 'pkg-config',
1888                        required: get_option('libdw'))
1889 endif
1890
1891 #################
1892 # config-host.h #
1893 #################
1894
1895 audio_drivers_selected = []
1896 if have_system
1897   audio_drivers_available = {
1898     'alsa': alsa.found(),
1899     'coreaudio': coreaudio.found(),
1900     'dsound': dsound.found(),
1901     'jack': jack.found(),
1902     'oss': oss.found(),
1903     'pa': pulse.found(),
1904     'pipewire': pipewire.found(),
1905     'sdl': sdl.found(),
1906     'sndio': sndio.found(),
1907   }
1908   foreach k, v: audio_drivers_available
1909     config_host_data.set('CONFIG_AUDIO_' + k.to_upper(), v)
1910   endforeach
1911
1912   # Default to native drivers first, OSS second, SDL third
1913   audio_drivers_priority = \
1914     [ 'pa', 'coreaudio', 'dsound', 'sndio', 'oss' ] + \
1915     (targetos == 'linux' ? [] : [ 'sdl' ])
1916   audio_drivers_default = []
1917   foreach k: audio_drivers_priority
1918     if audio_drivers_available[k]
1919       audio_drivers_default += k
1920     endif
1921   endforeach
1922
1923   foreach k: get_option('audio_drv_list')
1924     if k == 'default'
1925       audio_drivers_selected += audio_drivers_default
1926     elif not audio_drivers_available[k]
1927       error('Audio driver "@0@" not available.'.format(k))
1928     else
1929       audio_drivers_selected += k
1930     endif
1931   endforeach
1932 endif
1933 config_host_data.set('CONFIG_AUDIO_DRIVERS',
1934                      '"' + '", "'.join(audio_drivers_selected) + '", ')
1935
1936 if get_option('cfi')
1937   cfi_flags=[]
1938   # Check for dependency on LTO
1939   if not get_option('b_lto')
1940     error('Selected Control-Flow Integrity but LTO is disabled')
1941   endif
1942   if enable_modules
1943     error('Selected Control-Flow Integrity is not compatible with modules')
1944   endif
1945   # Check for cfi flags. CFI requires LTO so we can't use
1946   # get_supported_arguments, but need a more complex "compiles" which allows
1947   # custom arguments
1948   if cc.compiles('int main () { return 0; }', name: '-fsanitize=cfi-icall',
1949                  args: ['-flto', '-fsanitize=cfi-icall'] )
1950     cfi_flags += '-fsanitize=cfi-icall'
1951   else
1952     error('-fsanitize=cfi-icall is not supported by the compiler')
1953   endif
1954   if cc.compiles('int main () { return 0; }',
1955                  name: '-fsanitize-cfi-icall-generalize-pointers',
1956                  args: ['-flto', '-fsanitize=cfi-icall',
1957                         '-fsanitize-cfi-icall-generalize-pointers'] )
1958     cfi_flags += '-fsanitize-cfi-icall-generalize-pointers'
1959   else
1960     error('-fsanitize-cfi-icall-generalize-pointers is not supported by the compiler')
1961   endif
1962   if get_option('cfi_debug')
1963     if cc.compiles('int main () { return 0; }',
1964                    name: '-fno-sanitize-trap=cfi-icall',
1965                    args: ['-flto', '-fsanitize=cfi-icall',
1966                           '-fno-sanitize-trap=cfi-icall'] )
1967       cfi_flags += '-fno-sanitize-trap=cfi-icall'
1968     else
1969       error('-fno-sanitize-trap=cfi-icall is not supported by the compiler')
1970     endif
1971   endif
1972   add_global_arguments(cfi_flags, native: false, language: all_languages)
1973   add_global_link_arguments(cfi_flags, native: false, language: all_languages)
1974 endif
1975
1976 have_host_block_device = (targetos != 'darwin' or
1977     cc.has_header('IOKit/storage/IOMedia.h'))
1978
1979 dbus_display = get_option('dbus_display') \
1980   .require(gio.version().version_compare('>=2.64'),
1981            error_message: '-display dbus requires glib>=2.64') \
1982   .require(gdbus_codegen.found(),
1983            error_message: gdbus_codegen_error.format('-display dbus')) \
1984   .allowed()
1985
1986 have_virtfs = get_option('virtfs') \
1987     .require(targetos == 'linux' or targetos == 'darwin',
1988              error_message: 'virtio-9p (virtfs) requires Linux or macOS') \
1989     .require(targetos == 'linux' or cc.has_function('pthread_fchdir_np'),
1990              error_message: 'virtio-9p (virtfs) on macOS requires the presence of pthread_fchdir_np') \
1991     .require(targetos == 'darwin' or libattr.found(),
1992              error_message: 'virtio-9p (virtfs) on Linux requires libattr-devel') \
1993     .disable_auto_if(not have_tools and not have_system) \
1994     .allowed()
1995
1996 have_virtfs_proxy_helper = get_option('virtfs_proxy_helper') \
1997     .require(targetos != 'darwin', error_message: 'the virtfs proxy helper is incompatible with macOS') \
1998     .require(have_virtfs, error_message: 'the virtfs proxy helper requires that virtfs is enabled') \
1999     .disable_auto_if(not have_tools) \
2000     .require(libcap_ng.found(), error_message: 'the virtfs proxy helper requires libcap-ng') \
2001     .allowed()
2002
2003 if get_option('block_drv_ro_whitelist') == ''
2004   config_host_data.set('CONFIG_BDRV_RO_WHITELIST', '')
2005 else
2006   config_host_data.set('CONFIG_BDRV_RO_WHITELIST',
2007         '"' + get_option('block_drv_ro_whitelist').replace(',', '", "') + '", ')
2008 endif
2009 if get_option('block_drv_rw_whitelist') == ''
2010   config_host_data.set('CONFIG_BDRV_RW_WHITELIST', '')
2011 else
2012   config_host_data.set('CONFIG_BDRV_RW_WHITELIST',
2013         '"' + get_option('block_drv_rw_whitelist').replace(',', '", "') + '", ')
2014 endif
2015
2016 foreach k : get_option('trace_backends')
2017   config_host_data.set('CONFIG_TRACE_' + k.to_upper(), true)
2018 endforeach
2019 config_host_data.set_quoted('CONFIG_TRACE_FILE', get_option('trace_file'))
2020 config_host_data.set_quoted('CONFIG_TLS_PRIORITY', get_option('tls_priority'))
2021 if iasl.found()
2022   config_host_data.set_quoted('CONFIG_IASL', iasl.full_path())
2023 endif
2024 config_host_data.set_quoted('CONFIG_BINDIR', get_option('prefix') / get_option('bindir'))
2025 config_host_data.set_quoted('CONFIG_PREFIX', get_option('prefix'))
2026 config_host_data.set_quoted('CONFIG_QEMU_CONFDIR', get_option('prefix') / qemu_confdir)
2027 config_host_data.set_quoted('CONFIG_QEMU_DATADIR', get_option('prefix') / qemu_datadir)
2028 config_host_data.set_quoted('CONFIG_QEMU_DESKTOPDIR', get_option('prefix') / qemu_desktopdir)
2029
2030 qemu_firmwarepath = ''
2031 foreach k : get_option('qemu_firmwarepath')
2032   qemu_firmwarepath += '"' + get_option('prefix') / k + '", '
2033 endforeach
2034 config_host_data.set('CONFIG_QEMU_FIRMWAREPATH', qemu_firmwarepath)
2035
2036 config_host_data.set_quoted('CONFIG_QEMU_HELPERDIR', get_option('prefix') / get_option('libexecdir'))
2037 config_host_data.set_quoted('CONFIG_QEMU_ICONDIR', get_option('prefix') / qemu_icondir)
2038 config_host_data.set_quoted('CONFIG_QEMU_LOCALEDIR', get_option('prefix') / get_option('localedir'))
2039 config_host_data.set_quoted('CONFIG_QEMU_LOCALSTATEDIR', get_option('prefix') / get_option('localstatedir'))
2040 config_host_data.set_quoted('CONFIG_QEMU_MODDIR', get_option('prefix') / qemu_moddir)
2041 config_host_data.set_quoted('CONFIG_SYSCONFDIR', get_option('prefix') / get_option('sysconfdir'))
2042
2043 if enable_modules
2044   config_host_data.set('CONFIG_STAMP', run_command(
2045       meson.current_source_dir() / 'scripts/qemu-stamp.py',
2046       meson.project_version(), get_option('pkgversion'), '--',
2047       meson.current_source_dir() / 'configure',
2048       capture: true, check: true).stdout().strip())
2049 endif
2050
2051 have_slirp_smbd = get_option('slirp_smbd') \
2052   .require(targetos != 'windows', error_message: 'Host smbd not supported on this platform.') \
2053   .allowed()
2054 if have_slirp_smbd
2055   smbd_path = get_option('smbd')
2056   if smbd_path == ''
2057     smbd_path = (targetos == 'solaris' ? '/usr/sfw/sbin/smbd' : '/usr/sbin/smbd')
2058   endif
2059   config_host_data.set_quoted('CONFIG_SMBD_COMMAND', smbd_path)
2060 endif
2061
2062 config_host_data.set('HOST_' + host_arch.to_upper(), 1)
2063
2064 if get_option('module_upgrades') and not enable_modules
2065   error('Cannot enable module-upgrades as modules are not enabled')
2066 endif
2067 config_host_data.set('CONFIG_MODULE_UPGRADES', get_option('module_upgrades'))
2068
2069 config_host_data.set('CONFIG_ATTR', libattr.found())
2070 config_host_data.set('CONFIG_BDRV_WHITELIST_TOOLS', get_option('block_drv_whitelist_in_tools'))
2071 config_host_data.set('CONFIG_BRLAPI', brlapi.found())
2072 config_host_data.set('CONFIG_COCOA', cocoa.found())
2073 config_host_data.set('CONFIG_FUZZ', get_option('fuzzing'))
2074 config_host_data.set('CONFIG_GCOV', get_option('b_coverage'))
2075 config_host_data.set('CONFIG_LIBUDEV', libudev.found())
2076 config_host_data.set('CONFIG_LZO', lzo.found())
2077 config_host_data.set('CONFIG_MPATH', mpathpersist.found())
2078 config_host_data.set('CONFIG_BLKIO', blkio.found())
2079 if blkio.found()
2080   config_host_data.set('CONFIG_BLKIO_VHOST_VDPA_FD',
2081                        blkio.version().version_compare('>=1.3.0'))
2082 endif
2083 config_host_data.set('CONFIG_CURL', curl.found())
2084 config_host_data.set('CONFIG_CURSES', curses.found())
2085 config_host_data.set('CONFIG_GBM', gbm.found())
2086 config_host_data.set('CONFIG_GIO', gio.found())
2087 config_host_data.set('CONFIG_GLUSTERFS', glusterfs.found())
2088 if glusterfs.found()
2089   config_host_data.set('CONFIG_GLUSTERFS_XLATOR_OPT', glusterfs.version().version_compare('>=4'))
2090   config_host_data.set('CONFIG_GLUSTERFS_DISCARD', glusterfs.version().version_compare('>=5'))
2091   config_host_data.set('CONFIG_GLUSTERFS_FALLOCATE', glusterfs.version().version_compare('>=6'))
2092   config_host_data.set('CONFIG_GLUSTERFS_ZEROFILL', glusterfs.version().version_compare('>=6'))
2093   config_host_data.set('CONFIG_GLUSTERFS_FTRUNCATE_HAS_STAT', glusterfs_ftruncate_has_stat)
2094   config_host_data.set('CONFIG_GLUSTERFS_IOCB_HAS_STAT', glusterfs_iocb_has_stat)
2095 endif
2096 config_host_data.set('CONFIG_GTK', gtk.found())
2097 config_host_data.set('CONFIG_VTE', vte.found())
2098 config_host_data.set('CONFIG_GTK_CLIPBOARD', have_gtk_clipboard)
2099 config_host_data.set('CONFIG_HEXAGON_IDEF_PARSER', get_option('hexagon_idef_parser'))
2100 config_host_data.set('CONFIG_LIBATTR', have_old_libattr)
2101 config_host_data.set('CONFIG_LIBCAP_NG', libcap_ng.found())
2102 config_host_data.set('CONFIG_EBPF', libbpf.found())
2103 config_host_data.set('CONFIG_LIBDAXCTL', libdaxctl.found())
2104 config_host_data.set('CONFIG_LIBISCSI', libiscsi.found())
2105 config_host_data.set('CONFIG_LIBNFS', libnfs.found())
2106 config_host_data.set('CONFIG_LIBSSH', libssh.found())
2107 config_host_data.set('CONFIG_LINUX_AIO', libaio.found())
2108 config_host_data.set('CONFIG_LINUX_IO_URING', linux_io_uring.found())
2109 config_host_data.set('CONFIG_LIBPMEM', libpmem.found())
2110 config_host_data.set('CONFIG_MODULES', enable_modules)
2111 config_host_data.set('CONFIG_NUMA', numa.found())
2112 if numa.found()
2113   config_host_data.set('HAVE_NUMA_HAS_PREFERRED_MANY',
2114                        cc.has_function('numa_has_preferred_many',
2115                                        dependencies: numa))
2116 endif
2117 config_host_data.set('CONFIG_OPENGL', opengl.found())
2118 config_host_data.set('CONFIG_PLUGIN', get_option('plugins'))
2119 config_host_data.set('CONFIG_RBD', rbd.found())
2120 config_host_data.set('CONFIG_RDMA', rdma.found())
2121 config_host_data.set('CONFIG_SAFESTACK', get_option('safe_stack'))
2122 config_host_data.set('CONFIG_SDL', sdl.found())
2123 config_host_data.set('CONFIG_SDL_IMAGE', sdl_image.found())
2124 config_host_data.set('CONFIG_SECCOMP', seccomp.found())
2125 if seccomp.found()
2126   config_host_data.set('CONFIG_SECCOMP_SYSRAWRC', seccomp_has_sysrawrc)
2127 endif
2128 config_host_data.set('CONFIG_SNAPPY', snappy.found())
2129 config_host_data.set('CONFIG_SOLARIS', targetos == 'sunos')
2130 config_host_data.set('CONFIG_TPM', have_tpm)
2131 config_host_data.set('CONFIG_TSAN', get_option('tsan'))
2132 config_host_data.set('CONFIG_USB_LIBUSB', libusb.found())
2133 config_host_data.set('CONFIG_VDE', vde.found())
2134 config_host_data.set('CONFIG_VHOST_NET', have_vhost_net)
2135 config_host_data.set('CONFIG_VHOST_NET_USER', have_vhost_net_user)
2136 config_host_data.set('CONFIG_VHOST_NET_VDPA', have_vhost_net_vdpa)
2137 config_host_data.set('CONFIG_VHOST_KERNEL', have_vhost_kernel)
2138 config_host_data.set('CONFIG_VHOST_USER', have_vhost_user)
2139 config_host_data.set('CONFIG_VHOST_CRYPTO', have_vhost_user_crypto)
2140 config_host_data.set('CONFIG_VHOST_VDPA', have_vhost_vdpa)
2141 config_host_data.set('CONFIG_VMNET', vmnet.found())
2142 config_host_data.set('CONFIG_VHOST_USER_BLK_SERVER', have_vhost_user_blk_server)
2143 config_host_data.set('CONFIG_VDUSE_BLK_EXPORT', have_vduse_blk_export)
2144 config_host_data.set('CONFIG_PNG', png.found())
2145 config_host_data.set('CONFIG_VNC', vnc.found())
2146 config_host_data.set('CONFIG_VNC_JPEG', jpeg.found())
2147 config_host_data.set('CONFIG_VNC_SASL', sasl.found())
2148 config_host_data.set('CONFIG_VIRTFS', have_virtfs)
2149 config_host_data.set('CONFIG_VTE', vte.found())
2150 config_host_data.set('CONFIG_XKBCOMMON', xkbcommon.found())
2151 config_host_data.set('CONFIG_KEYUTILS', keyutils.found())
2152 config_host_data.set('CONFIG_GETTID', has_gettid)
2153 config_host_data.set('CONFIG_GNUTLS', gnutls.found())
2154 config_host_data.set('CONFIG_GNUTLS_CRYPTO', gnutls_crypto.found())
2155 config_host_data.set('CONFIG_TASN1', tasn1.found())
2156 config_host_data.set('CONFIG_GCRYPT', gcrypt.found())
2157 config_host_data.set('CONFIG_NETTLE', nettle.found())
2158 config_host_data.set('CONFIG_HOGWEED', hogweed.found())
2159 config_host_data.set('CONFIG_QEMU_PRIVATE_XTS', xts == 'private')
2160 config_host_data.set('CONFIG_MALLOC_TRIM', has_malloc_trim)
2161 config_host_data.set('CONFIG_STATX', has_statx)
2162 config_host_data.set('CONFIG_STATX_MNT_ID', has_statx_mnt_id)
2163 config_host_data.set('CONFIG_ZSTD', zstd.found())
2164 config_host_data.set('CONFIG_FUSE', fuse.found())
2165 config_host_data.set('CONFIG_FUSE_LSEEK', fuse_lseek.found())
2166 config_host_data.set('CONFIG_SPICE_PROTOCOL', spice_protocol.found())
2167 if spice_protocol.found()
2168 config_host_data.set('CONFIG_SPICE_PROTOCOL_MAJOR', spice_protocol.version().split('.')[0])
2169 config_host_data.set('CONFIG_SPICE_PROTOCOL_MINOR', spice_protocol.version().split('.')[1])
2170 config_host_data.set('CONFIG_SPICE_PROTOCOL_MICRO', spice_protocol.version().split('.')[2])
2171 endif
2172 config_host_data.set('CONFIG_SPICE', spice.found())
2173 config_host_data.set('CONFIG_X11', x11.found())
2174 config_host_data.set('CONFIG_DBUS_DISPLAY', dbus_display)
2175 config_host_data.set('CONFIG_CFI', get_option('cfi'))
2176 config_host_data.set('CONFIG_SELINUX', selinux.found())
2177 config_host_data.set('CONFIG_XEN_BACKEND', xen.found())
2178 config_host_data.set('CONFIG_LIBDW', libdw.found())
2179 if xen.found()
2180   # protect from xen.version() having less than three components
2181   xen_version = xen.version().split('.') + ['0', '0']
2182   xen_ctrl_version = xen_version[0] + \
2183     ('0' + xen_version[1]).substring(-2) + \
2184     ('0' + xen_version[2]).substring(-2)
2185   config_host_data.set('CONFIG_XEN_CTRL_INTERFACE_VERSION', xen_ctrl_version)
2186 endif
2187 config_host_data.set('QEMU_VERSION', '"@0@"'.format(meson.project_version()))
2188 config_host_data.set('QEMU_VERSION_MAJOR', meson.project_version().split('.')[0])
2189 config_host_data.set('QEMU_VERSION_MINOR', meson.project_version().split('.')[1])
2190 config_host_data.set('QEMU_VERSION_MICRO', meson.project_version().split('.')[2])
2191
2192 config_host_data.set_quoted('CONFIG_HOST_DSOSUF', host_dsosuf)
2193 config_host_data.set('HAVE_HOST_BLOCK_DEVICE', have_host_block_device)
2194
2195 have_coroutine_pool = get_option('coroutine_pool')
2196 if get_option('debug_stack_usage') and have_coroutine_pool
2197   message('Disabling coroutine pool to measure stack usage')
2198   have_coroutine_pool = false
2199 endif
2200 config_host_data.set10('CONFIG_COROUTINE_POOL', have_coroutine_pool)
2201 config_host_data.set('CONFIG_DEBUG_GRAPH_LOCK', get_option('debug_graph_lock'))
2202 config_host_data.set('CONFIG_DEBUG_MUTEX', get_option('debug_mutex'))
2203 config_host_data.set('CONFIG_DEBUG_STACK_USAGE', get_option('debug_stack_usage'))
2204 config_host_data.set('CONFIG_DEBUG_TCG', get_option('debug_tcg'))
2205 config_host_data.set('CONFIG_GPROF', get_option('gprof'))
2206 config_host_data.set('CONFIG_LIVE_BLOCK_MIGRATION', get_option('live_block_migration').allowed())
2207 config_host_data.set('CONFIG_QOM_CAST_DEBUG', get_option('qom_cast_debug'))
2208 config_host_data.set('CONFIG_REPLICATION', get_option('replication').allowed())
2209
2210 # has_header
2211 config_host_data.set('CONFIG_EPOLL', cc.has_header('sys/epoll.h'))
2212 config_host_data.set('CONFIG_LINUX_MAGIC_H', cc.has_header('linux/magic.h'))
2213 config_host_data.set('CONFIG_VALGRIND_H', cc.has_header('valgrind/valgrind.h'))
2214 config_host_data.set('HAVE_BTRFS_H', cc.has_header('linux/btrfs.h'))
2215 config_host_data.set('HAVE_DRM_H', cc.has_header('libdrm/drm.h'))
2216 config_host_data.set('HAVE_PTY_H', cc.has_header('pty.h'))
2217 config_host_data.set('HAVE_SYS_DISK_H', cc.has_header('sys/disk.h'))
2218 config_host_data.set('HAVE_SYS_IOCCOM_H', cc.has_header('sys/ioccom.h'))
2219 config_host_data.set('HAVE_SYS_KCOV_H', cc.has_header('sys/kcov.h'))
2220 if targetos == 'windows'
2221   config_host_data.set('HAVE_AFUNIX_H', cc.has_header('afunix.h'))
2222 endif
2223
2224 # has_function
2225 config_host_data.set('CONFIG_CLOSE_RANGE', cc.has_function('close_range'))
2226 config_host_data.set('CONFIG_ACCEPT4', cc.has_function('accept4'))
2227 config_host_data.set('CONFIG_CLOCK_ADJTIME', cc.has_function('clock_adjtime'))
2228 config_host_data.set('CONFIG_DUP3', cc.has_function('dup3'))
2229 config_host_data.set('CONFIG_FALLOCATE', cc.has_function('fallocate'))
2230 config_host_data.set('CONFIG_POSIX_FALLOCATE', cc.has_function('posix_fallocate'))
2231 config_host_data.set('CONFIG_GETCPU', cc.has_function('getcpu', prefix: gnu_source_prefix))
2232 config_host_data.set('CONFIG_SCHED_GETCPU', cc.has_function('sched_getcpu', prefix: '#include <sched.h>'))
2233 # Note that we need to specify prefix: here to avoid incorrectly
2234 # thinking that Windows has posix_memalign()
2235 config_host_data.set('CONFIG_POSIX_MEMALIGN', cc.has_function('posix_memalign', prefix: '#include <stdlib.h>'))
2236 config_host_data.set('CONFIG_ALIGNED_MALLOC', cc.has_function('_aligned_malloc'))
2237 config_host_data.set('CONFIG_VALLOC', cc.has_function('valloc'))
2238 config_host_data.set('CONFIG_MEMALIGN', cc.has_function('memalign'))
2239 config_host_data.set('CONFIG_PPOLL', cc.has_function('ppoll'))
2240 config_host_data.set('CONFIG_PREADV', cc.has_function('preadv', prefix: '#include <sys/uio.h>'))
2241 config_host_data.set('CONFIG_PTHREAD_FCHDIR_NP', cc.has_function('pthread_fchdir_np'))
2242 config_host_data.set('CONFIG_SENDFILE', cc.has_function('sendfile'))
2243 config_host_data.set('CONFIG_SETNS', cc.has_function('setns') and cc.has_function('unshare'))
2244 config_host_data.set('CONFIG_SYNCFS', cc.has_function('syncfs'))
2245 config_host_data.set('CONFIG_SYNC_FILE_RANGE', cc.has_function('sync_file_range'))
2246 config_host_data.set('CONFIG_TIMERFD', cc.has_function('timerfd_create'))
2247 config_host_data.set('HAVE_COPY_FILE_RANGE', cc.has_function('copy_file_range'))
2248 config_host_data.set('HAVE_GETIFADDRS', cc.has_function('getifaddrs'))
2249 config_host_data.set('HAVE_GLIB_WITH_SLICE_ALLOCATOR', glib_has_gslice)
2250 config_host_data.set('HAVE_OPENPTY', cc.has_function('openpty', dependencies: util))
2251 config_host_data.set('HAVE_STRCHRNUL', cc.has_function('strchrnul'))
2252 config_host_data.set('HAVE_SYSTEM_FUNCTION', cc.has_function('system', prefix: '#include <stdlib.h>'))
2253 if rbd.found()
2254   config_host_data.set('HAVE_RBD_NAMESPACE_EXISTS',
2255                        cc.has_function('rbd_namespace_exists',
2256                                        dependencies: rbd,
2257                                        prefix: '#include <rbd/librbd.h>'))
2258 endif
2259 if rdma.found()
2260   config_host_data.set('HAVE_IBV_ADVISE_MR',
2261                        cc.has_function('ibv_advise_mr',
2262                                        dependencies: rdma,
2263                                        prefix: '#include <infiniband/verbs.h>'))
2264 endif
2265
2266 have_asan_fiber = false
2267 if get_option('sanitizers') and \
2268    not cc.has_function('__sanitizer_start_switch_fiber',
2269                          args: '-fsanitize=address',
2270                          prefix: '#include <sanitizer/asan_interface.h>')
2271   warning('Missing ASAN due to missing fiber annotation interface')
2272   warning('Without code annotation, the report may be inferior.')
2273 else
2274   have_asan_fiber = true
2275 endif
2276 config_host_data.set('CONFIG_ASAN_IFACE_FIBER', have_asan_fiber)
2277
2278 # has_header_symbol
2279 config_host_data.set('CONFIG_BLKZONED',
2280                      cc.has_header_symbol('linux/blkzoned.h', 'BLKOPENZONE'))
2281 config_host_data.set('CONFIG_EPOLL_CREATE1',
2282                      cc.has_header_symbol('sys/epoll.h', 'epoll_create1'))
2283 config_host_data.set('CONFIG_FALLOCATE_PUNCH_HOLE',
2284                      cc.has_header_symbol('linux/falloc.h', 'FALLOC_FL_PUNCH_HOLE') and
2285                      cc.has_header_symbol('linux/falloc.h', 'FALLOC_FL_KEEP_SIZE'))
2286 config_host_data.set('CONFIG_FALLOCATE_ZERO_RANGE',
2287                      cc.has_header_symbol('linux/falloc.h', 'FALLOC_FL_ZERO_RANGE'))
2288 config_host_data.set('CONFIG_FIEMAP',
2289                      cc.has_header('linux/fiemap.h') and
2290                      cc.has_header_symbol('linux/fs.h', 'FS_IOC_FIEMAP'))
2291 config_host_data.set('CONFIG_GETRANDOM',
2292                      cc.has_function('getrandom') and
2293                      cc.has_header_symbol('sys/random.h', 'GRND_NONBLOCK'))
2294 config_host_data.set('CONFIG_INOTIFY',
2295                      cc.has_header_symbol('sys/inotify.h', 'inotify_init'))
2296 config_host_data.set('CONFIG_INOTIFY1',
2297                      cc.has_header_symbol('sys/inotify.h', 'inotify_init1'))
2298 config_host_data.set('CONFIG_PRCTL_PR_SET_TIMERSLACK',
2299                      cc.has_header_symbol('sys/prctl.h', 'PR_SET_TIMERSLACK'))
2300 config_host_data.set('CONFIG_RTNETLINK',
2301                      cc.has_header_symbol('linux/rtnetlink.h', 'IFLA_PROTO_DOWN'))
2302 config_host_data.set('CONFIG_SYSMACROS',
2303                      cc.has_header_symbol('sys/sysmacros.h', 'makedev'))
2304 config_host_data.set('HAVE_OPTRESET',
2305                      cc.has_header_symbol('getopt.h', 'optreset'))
2306 config_host_data.set('HAVE_IPPROTO_MPTCP',
2307                      cc.has_header_symbol('netinet/in.h', 'IPPROTO_MPTCP'))
2308
2309 # has_member
2310 config_host_data.set('HAVE_SIGEV_NOTIFY_THREAD_ID',
2311                      cc.has_member('struct sigevent', 'sigev_notify_thread_id',
2312                                    prefix: '#include <signal.h>'))
2313 config_host_data.set('HAVE_STRUCT_STAT_ST_ATIM',
2314                      cc.has_member('struct stat', 'st_atim',
2315                                    prefix: '#include <sys/stat.h>'))
2316 config_host_data.set('HAVE_BLK_ZONE_REP_CAPACITY',
2317                      cc.has_member('struct blk_zone', 'capacity',
2318                                    prefix: '#include <linux/blkzoned.h>'))
2319
2320 # has_type
2321 config_host_data.set('CONFIG_IOVEC',
2322                      cc.has_type('struct iovec',
2323                                  prefix: '#include <sys/uio.h>'))
2324 config_host_data.set('HAVE_UTMPX',
2325                      cc.has_type('struct utmpx',
2326                                  prefix: '#include <utmpx.h>'))
2327
2328 config_host_data.set('CONFIG_EVENTFD', cc.links('''
2329   #include <sys/eventfd.h>
2330   int main(void) { return eventfd(0, EFD_NONBLOCK | EFD_CLOEXEC); }'''))
2331 config_host_data.set('CONFIG_FDATASYNC', cc.links(gnu_source_prefix + '''
2332   #include <unistd.h>
2333   int main(void) {
2334   #if defined(_POSIX_SYNCHRONIZED_IO) && _POSIX_SYNCHRONIZED_IO > 0
2335   return fdatasync(0);
2336   #else
2337   #error Not supported
2338   #endif
2339   }'''))
2340
2341 has_madvise = cc.links(gnu_source_prefix + '''
2342   #include <sys/types.h>
2343   #include <sys/mman.h>
2344   #include <stddef.h>
2345   int main(void) { return madvise(NULL, 0, MADV_DONTNEED); }''')
2346 missing_madvise_proto = false
2347 if has_madvise
2348   # Some platforms (illumos and Solaris before Solaris 11) provide madvise()
2349   # but forget to prototype it. In this case, has_madvise will be true (the
2350   # test program links despite a compile warning). To detect the
2351   # missing-prototype case, we try again with a definitely-bogus prototype.
2352   # This will only compile if the system headers don't provide the prototype;
2353   # otherwise the conflicting prototypes will cause a compiler error.
2354   missing_madvise_proto = cc.links(gnu_source_prefix + '''
2355     #include <sys/types.h>
2356     #include <sys/mman.h>
2357     #include <stddef.h>
2358     extern int madvise(int);
2359     int main(void) { return madvise(0); }''')
2360 endif
2361 config_host_data.set('CONFIG_MADVISE', has_madvise)
2362 config_host_data.set('HAVE_MADVISE_WITHOUT_PROTOTYPE', missing_madvise_proto)
2363
2364 config_host_data.set('CONFIG_MEMFD', cc.links(gnu_source_prefix + '''
2365   #include <sys/mman.h>
2366   int main(void) { return memfd_create("foo", MFD_ALLOW_SEALING); }'''))
2367 config_host_data.set('CONFIG_OPEN_BY_HANDLE', cc.links(gnu_source_prefix + '''
2368   #include <fcntl.h>
2369   #if !defined(AT_EMPTY_PATH)
2370   # error missing definition
2371   #else
2372   int main(void) { struct file_handle fh; return open_by_handle_at(0, &fh, 0); }
2373   #endif'''))
2374 config_host_data.set('CONFIG_POSIX_MADVISE', cc.links(gnu_source_prefix + '''
2375   #include <sys/mman.h>
2376   #include <stddef.h>
2377   int main(void) { return posix_madvise(NULL, 0, POSIX_MADV_DONTNEED); }'''))
2378
2379 config_host_data.set('CONFIG_PTHREAD_SETNAME_NP_W_TID', cc.links(gnu_source_prefix + '''
2380   #include <pthread.h>
2381
2382   static void *f(void *p) { return NULL; }
2383   int main(void)
2384   {
2385     pthread_t thread;
2386     pthread_create(&thread, 0, f, 0);
2387     pthread_setname_np(thread, "QEMU");
2388     return 0;
2389   }''', dependencies: threads))
2390 config_host_data.set('CONFIG_PTHREAD_SETNAME_NP_WO_TID', cc.links(gnu_source_prefix + '''
2391   #include <pthread.h>
2392
2393   static void *f(void *p) { pthread_setname_np("QEMU"); return NULL; }
2394   int main(void)
2395   {
2396     pthread_t thread;
2397     pthread_create(&thread, 0, f, 0);
2398     return 0;
2399   }''', dependencies: threads))
2400 config_host_data.set('CONFIG_PTHREAD_SET_NAME_NP', cc.links(gnu_source_prefix + '''
2401   #include <pthread.h>
2402   #include <pthread_np.h>
2403
2404   static void *f(void *p) { return NULL; }
2405   int main(void)
2406   {
2407     pthread_t thread;
2408     pthread_create(&thread, 0, f, 0);
2409     pthread_set_name_np(thread, "QEMU");
2410     return 0;
2411   }''', dependencies: threads))
2412 config_host_data.set('CONFIG_PTHREAD_CONDATTR_SETCLOCK', cc.links(gnu_source_prefix + '''
2413   #include <pthread.h>
2414   #include <time.h>
2415
2416   int main(void)
2417   {
2418     pthread_condattr_t attr
2419     pthread_condattr_init(&attr);
2420     pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
2421     return 0;
2422   }''', dependencies: threads))
2423 config_host_data.set('CONFIG_PTHREAD_AFFINITY_NP', cc.links(gnu_source_prefix + '''
2424   #include <pthread.h>
2425
2426   static void *f(void *p) { return NULL; }
2427   int main(void)
2428   {
2429     int setsize = CPU_ALLOC_SIZE(64);
2430     pthread_t thread;
2431     cpu_set_t *cpuset;
2432     pthread_create(&thread, 0, f, 0);
2433     cpuset = CPU_ALLOC(64);
2434     CPU_ZERO_S(setsize, cpuset);
2435     pthread_setaffinity_np(thread, setsize, cpuset);
2436     pthread_getaffinity_np(thread, setsize, cpuset);
2437     CPU_FREE(cpuset);
2438     return 0;
2439   }''', dependencies: threads))
2440 config_host_data.set('CONFIG_SIGNALFD', cc.links(gnu_source_prefix + '''
2441   #include <sys/signalfd.h>
2442   #include <stddef.h>
2443   int main(void) { return signalfd(-1, NULL, SFD_CLOEXEC); }'''))
2444 config_host_data.set('CONFIG_SPLICE', cc.links(gnu_source_prefix + '''
2445   #include <unistd.h>
2446   #include <fcntl.h>
2447   #include <limits.h>
2448
2449   int main(void)
2450   {
2451     int len, fd = 0;
2452     len = tee(STDIN_FILENO, STDOUT_FILENO, INT_MAX, SPLICE_F_NONBLOCK);
2453     splice(STDIN_FILENO, NULL, fd, NULL, len, SPLICE_F_MOVE);
2454     return 0;
2455   }'''))
2456
2457 config_host_data.set('HAVE_MLOCKALL', cc.links(gnu_source_prefix + '''
2458   #include <sys/mman.h>
2459   int main(void) {
2460     return mlockall(MCL_FUTURE);
2461   }'''))
2462
2463 have_l2tpv3 = false
2464 if get_option('l2tpv3').allowed() and have_system
2465   have_l2tpv3 = cc.has_type('struct mmsghdr',
2466     prefix: gnu_source_prefix + '''
2467       #include <sys/socket.h>
2468       #include <linux/ip.h>''')
2469 endif
2470 config_host_data.set('CONFIG_L2TPV3', have_l2tpv3)
2471
2472 have_netmap = false
2473 if get_option('netmap').allowed() and have_system
2474   have_netmap = cc.compiles('''
2475     #include <inttypes.h>
2476     #include <net/if.h>
2477     #include <net/netmap.h>
2478     #include <net/netmap_user.h>
2479     #if (NETMAP_API < 11) || (NETMAP_API > 15)
2480     #error
2481     #endif
2482     int main(void) { return 0; }''')
2483   if not have_netmap and get_option('netmap').enabled()
2484     error('Netmap headers not available')
2485   endif
2486 endif
2487 config_host_data.set('CONFIG_NETMAP', have_netmap)
2488
2489 # Work around a system header bug with some kernel/XFS header
2490 # versions where they both try to define 'struct fsxattr':
2491 # xfs headers will not try to redefine structs from linux headers
2492 # if this macro is set.
2493 config_host_data.set('HAVE_FSXATTR', cc.links('''
2494   #include <linux/fs.h>
2495   struct fsxattr foo;
2496   int main(void) {
2497     return 0;
2498   }'''))
2499
2500 # Some versions of Mac OS X incorrectly define SIZE_MAX
2501 config_host_data.set('HAVE_BROKEN_SIZE_MAX', not cc.compiles('''
2502     #include <stdint.h>
2503     #include <stdio.h>
2504     int main(void) {
2505         return printf("%zu", SIZE_MAX);
2506     }''', args: ['-Werror']))
2507
2508 # See if 64-bit atomic operations are supported.
2509 # Note that without __atomic builtins, we can only
2510 # assume atomic loads/stores max at pointer size.
2511 config_host_data.set('CONFIG_ATOMIC64', cc.links('''
2512   #include <stdint.h>
2513   int main(void)
2514   {
2515     uint64_t x = 0, y = 0;
2516     y = __atomic_load_n(&x, __ATOMIC_RELAXED);
2517     __atomic_store_n(&x, y, __ATOMIC_RELAXED);
2518     __atomic_compare_exchange_n(&x, &y, x, 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
2519     __atomic_exchange_n(&x, y, __ATOMIC_RELAXED);
2520     __atomic_fetch_add(&x, y, __ATOMIC_RELAXED);
2521     return 0;
2522   }'''))
2523
2524 has_int128_type = cc.compiles('''
2525   __int128_t a;
2526   __uint128_t b;
2527   int main(void) { b = a; }''')
2528 config_host_data.set('CONFIG_INT128_TYPE', has_int128_type)
2529
2530 has_int128 = has_int128_type and cc.links('''
2531   __int128_t a;
2532   __uint128_t b;
2533   int main (void) {
2534     a = a + b;
2535     b = a * b;
2536     a = a * a;
2537     return 0;
2538   }''')
2539 config_host_data.set('CONFIG_INT128', has_int128)
2540
2541 if has_int128_type
2542   # "do we have 128-bit atomics which are handled inline and specifically not
2543   # via libatomic". The reason we can't use libatomic is documented in the
2544   # comment starting "GCC is a house divided" in include/qemu/atomic128.h.
2545   # We only care about these operations on 16-byte aligned pointers, so
2546   # force 16-byte alignment of the pointer, which may be greater than
2547   # __alignof(unsigned __int128) for the host.
2548   atomic_test_128 = '''
2549     int main(int ac, char **av) {
2550       __uint128_t *p = __builtin_assume_aligned(av[ac - 1], 16);
2551       p[1] = __atomic_load_n(&p[0], __ATOMIC_RELAXED);
2552       __atomic_store_n(&p[2], p[3], __ATOMIC_RELAXED);
2553       __atomic_compare_exchange_n(&p[4], &p[5], p[6], 0, __ATOMIC_RELAXED, __ATOMIC_RELAXED);
2554       return 0;
2555     }'''
2556   has_atomic128 = cc.links(atomic_test_128)
2557
2558   config_host_data.set('CONFIG_ATOMIC128', has_atomic128)
2559
2560   if not has_atomic128
2561     # Even with __builtin_assume_aligned, the above test may have failed
2562     # without optimization enabled.  Try again with optimizations locally
2563     # enabled for the function.  See
2564     #   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107389
2565     has_atomic128_opt = cc.links('__attribute__((optimize("O1")))' + atomic_test_128)
2566     config_host_data.set('CONFIG_ATOMIC128_OPT', has_atomic128_opt)
2567
2568     if not has_atomic128_opt
2569       config_host_data.set('CONFIG_CMPXCHG128', cc.links('''
2570         int main(void)
2571         {
2572           __uint128_t x = 0, y = 0;
2573           __sync_val_compare_and_swap_16(&x, y, x);
2574           return 0;
2575         }
2576       '''))
2577     endif
2578   endif
2579 endif
2580
2581 config_host_data.set('CONFIG_GETAUXVAL', cc.links(gnu_source_prefix + '''
2582   #include <sys/auxv.h>
2583   int main(void) {
2584     return getauxval(AT_HWCAP) == 0;
2585   }'''))
2586
2587 config_host_data.set('CONFIG_USBFS', have_linux_user and cc.compiles('''
2588   #include <linux/usbdevice_fs.h>
2589
2590   #ifndef USBDEVFS_GET_CAPABILITIES
2591   #error "USBDEVFS_GET_CAPABILITIES undefined"
2592   #endif
2593
2594   #ifndef USBDEVFS_DISCONNECT_CLAIM
2595   #error "USBDEVFS_DISCONNECT_CLAIM undefined"
2596   #endif
2597
2598   int main(void) { return 0; }'''))
2599
2600 have_keyring = get_option('keyring') \
2601   .require(targetos == 'linux', error_message: 'keyring is only available on Linux') \
2602   .require(cc.compiles('''
2603     #include <errno.h>
2604     #include <asm/unistd.h>
2605     #include <linux/keyctl.h>
2606     #include <sys/syscall.h>
2607     #include <unistd.h>
2608     int main(void) {
2609         return syscall(__NR_keyctl, KEYCTL_READ, 0, NULL, NULL, 0);
2610     }'''), error_message: 'keyctl syscall not available on this system').allowed()
2611 config_host_data.set('CONFIG_SECRET_KEYRING', have_keyring)
2612
2613 have_cpuid_h = cc.links('''
2614   #include <cpuid.h>
2615   int main(void) {
2616     unsigned a, b, c, d;
2617     unsigned max = __get_cpuid_max(0, 0);
2618
2619     if (max >= 1) {
2620         __cpuid(1, a, b, c, d);
2621     }
2622
2623     if (max >= 7) {
2624         __cpuid_count(7, 0, a, b, c, d);
2625     }
2626
2627     return 0;
2628   }''')
2629 config_host_data.set('CONFIG_CPUID_H', have_cpuid_h)
2630
2631 config_host_data.set('CONFIG_AVX2_OPT', get_option('avx2') \
2632   .require(have_cpuid_h, error_message: 'cpuid.h not available, cannot enable AVX2') \
2633   .require(cc.links('''
2634     #include <cpuid.h>
2635     #include <immintrin.h>
2636     static int __attribute__((target("avx2"))) bar(void *a) {
2637       __m256i x = *(__m256i *)a;
2638       return _mm256_testz_si256(x, x);
2639     }
2640     int main(int argc, char *argv[]) { return bar(argv[argc - 1]); }
2641   '''), error_message: 'AVX2 not available').allowed())
2642
2643 config_host_data.set('CONFIG_AVX512F_OPT', get_option('avx512f') \
2644   .require(have_cpuid_h, error_message: 'cpuid.h not available, cannot enable AVX512F') \
2645   .require(cc.links('''
2646     #include <cpuid.h>
2647     #include <immintrin.h>
2648     static int __attribute__((target("avx512f"))) bar(void *a) {
2649       __m512i x = *(__m512i *)a;
2650       return _mm512_test_epi64_mask(x, x);
2651     }
2652     int main(int argc, char *argv[]) { return bar(argv[argc - 1]); }
2653   '''), error_message: 'AVX512F not available').allowed())
2654
2655 config_host_data.set('CONFIG_AVX512BW_OPT', get_option('avx512bw') \
2656   .require(have_cpuid_h, error_message: 'cpuid.h not available, cannot enable AVX512BW') \
2657   .require(cc.links('''
2658     #include <cpuid.h>
2659     #include <immintrin.h>
2660     static int __attribute__((target("avx512bw"))) bar(void *a) {
2661       __m512i *x = a;
2662       __m512i res= _mm512_abs_epi8(*x);
2663       return res[1];
2664     }
2665     int main(int argc, char *argv[]) { return bar(argv[0]); }
2666   '''), error_message: 'AVX512BW not available').allowed())
2667
2668 # For both AArch64 and AArch32, detect if builtins are available.
2669 config_host_data.set('CONFIG_ARM_AES_BUILTIN', cc.compiles('''
2670     #include <arm_neon.h>
2671     #ifndef __ARM_FEATURE_AES
2672     __attribute__((target("+crypto")))
2673     #endif
2674     void foo(uint8x16_t *p) { *p = vaesmcq_u8(*p); }
2675   '''))
2676
2677 have_pvrdma = get_option('pvrdma') \
2678   .require(rdma.found(), error_message: 'PVRDMA requires OpenFabrics libraries') \
2679   .require(cc.compiles(gnu_source_prefix + '''
2680     #include <sys/mman.h>
2681     int main(void)
2682     {
2683       char buf = 0;
2684       void *addr = &buf;
2685       addr = mremap(addr, 0, 1, MREMAP_MAYMOVE | MREMAP_FIXED);
2686
2687       return 0;
2688     }'''), error_message: 'PVRDMA requires mremap').allowed()
2689
2690 if have_pvrdma
2691   config_host_data.set('LEGACY_RDMA_REG_MR', not cc.links('''
2692     #include <infiniband/verbs.h>
2693     int main(void)
2694     {
2695       struct ibv_mr *mr;
2696       struct ibv_pd *pd = NULL;
2697       size_t length = 10;
2698       uint64_t iova = 0;
2699       int access = 0;
2700       void *addr = NULL;
2701
2702       mr = ibv_reg_mr_iova(pd, addr, length, iova, access);
2703       ibv_dereg_mr(mr);
2704       return 0;
2705     }'''))
2706 endif
2707
2708 if get_option('membarrier').disabled()
2709   have_membarrier = false
2710 elif targetos == 'windows'
2711   have_membarrier = true
2712 elif targetos == 'linux'
2713   have_membarrier = cc.compiles('''
2714     #include <linux/membarrier.h>
2715     #include <sys/syscall.h>
2716     #include <unistd.h>
2717     #include <stdlib.h>
2718     int main(void) {
2719         syscall(__NR_membarrier, MEMBARRIER_CMD_QUERY, 0);
2720         syscall(__NR_membarrier, MEMBARRIER_CMD_SHARED, 0);
2721         exit(0);
2722     }''')
2723 endif
2724 config_host_data.set('CONFIG_MEMBARRIER', get_option('membarrier') \
2725   .require(have_membarrier, error_message: 'membarrier system call not available') \
2726   .allowed())
2727
2728 have_afalg = get_option('crypto_afalg') \
2729   .require(cc.compiles(gnu_source_prefix + '''
2730     #include <errno.h>
2731     #include <sys/types.h>
2732     #include <sys/socket.h>
2733     #include <linux/if_alg.h>
2734     int main(void) {
2735       int sock;
2736       sock = socket(AF_ALG, SOCK_SEQPACKET, 0);
2737       return sock;
2738     }
2739   '''), error_message: 'AF_ALG requested but could not be detected').allowed()
2740 config_host_data.set('CONFIG_AF_ALG', have_afalg)
2741
2742 config_host_data.set('CONFIG_AF_VSOCK', cc.has_header_symbol(
2743   'linux/vm_sockets.h', 'AF_VSOCK',
2744   prefix: '#include <sys/socket.h>',
2745 ))
2746
2747 have_vss = false
2748 have_vss_sdk = false # old xp/2003 SDK
2749 if targetos == 'windows' and 'cpp' in all_languages
2750   have_vss = cxx.compiles('''
2751     #define __MIDL_user_allocate_free_DEFINED__
2752     #include <vss.h>
2753     int main(void) { return VSS_CTX_BACKUP; }''')
2754   have_vss_sdk = cxx.has_header('vscoordint.h')
2755 endif
2756 config_host_data.set('HAVE_VSS_SDK', have_vss_sdk)
2757
2758 foreach k, v: config_host
2759   if k.startswith('CONFIG_')
2760     config_host_data.set(k, v == 'y' ? 1 : v)
2761   endif
2762 endforeach
2763
2764 # Older versions of MinGW do not import _lock_file and _unlock_file properly.
2765 # This was fixed for v6.0.0 with commit b48e3ac8969d.
2766 if targetos == 'windows'
2767   config_host_data.set('HAVE__LOCK_FILE', cc.links('''
2768     #include <stdio.h>
2769     int main(void) {
2770       _lock_file(NULL);
2771       _unlock_file(NULL);
2772       return 0;
2773     }''', name: '_lock_file and _unlock_file'))
2774 endif
2775
2776 if targetos == 'windows'
2777   mingw_has_setjmp_longjmp = cc.links('''
2778     #include <setjmp.h>
2779     int main(void) {
2780       /*
2781        * These functions are not available in setjmp header, but may be
2782        * available at link time, from libmingwex.a.
2783        */
2784       extern int __mingw_setjmp(jmp_buf);
2785       extern void __attribute__((noreturn)) __mingw_longjmp(jmp_buf, int);
2786       jmp_buf env;
2787       __mingw_setjmp(env);
2788       __mingw_longjmp(env, 0);
2789     }
2790   ''', name: 'mingw setjmp and longjmp')
2791
2792   if cpu == 'aarch64' and not mingw_has_setjmp_longjmp
2793     error('mingw must provide setjmp/longjmp for windows-arm64')
2794   endif
2795 endif
2796
2797 ########################
2798 # Target configuration #
2799 ########################
2800
2801 minikconf = find_program('scripts/minikconf.py')
2802 config_all = {}
2803 config_all_devices = {}
2804 config_all_disas = {}
2805 config_devices_mak_list = []
2806 config_devices_h = {}
2807 config_target_h = {}
2808 config_target_mak = {}
2809
2810 disassemblers = {
2811   'alpha' : ['CONFIG_ALPHA_DIS'],
2812   'avr' : ['CONFIG_AVR_DIS'],
2813   'cris' : ['CONFIG_CRIS_DIS'],
2814   'hexagon' : ['CONFIG_HEXAGON_DIS'],
2815   'hppa' : ['CONFIG_HPPA_DIS'],
2816   'i386' : ['CONFIG_I386_DIS'],
2817   'x86_64' : ['CONFIG_I386_DIS'],
2818   'm68k' : ['CONFIG_M68K_DIS'],
2819   'microblaze' : ['CONFIG_MICROBLAZE_DIS'],
2820   'mips' : ['CONFIG_MIPS_DIS'],
2821   'nios2' : ['CONFIG_NIOS2_DIS'],
2822   'or1k' : ['CONFIG_OPENRISC_DIS'],
2823   'ppc' : ['CONFIG_PPC_DIS'],
2824   'riscv' : ['CONFIG_RISCV_DIS'],
2825   'rx' : ['CONFIG_RX_DIS'],
2826   's390' : ['CONFIG_S390_DIS'],
2827   'sh4' : ['CONFIG_SH4_DIS'],
2828   'sparc' : ['CONFIG_SPARC_DIS'],
2829   'xtensa' : ['CONFIG_XTENSA_DIS'],
2830   'loongarch' : ['CONFIG_LOONGARCH_DIS'],
2831 }
2832
2833 have_ivshmem = config_host_data.get('CONFIG_EVENTFD')
2834 host_kconfig = \
2835   (get_option('fuzzing') ? ['CONFIG_FUZZ=y'] : []) + \
2836   (have_tpm ? ['CONFIG_TPM=y'] : []) + \
2837   (spice.found() ? ['CONFIG_SPICE=y'] : []) + \
2838   (have_ivshmem ? ['CONFIG_IVSHMEM=y'] : []) + \
2839   (opengl.found() ? ['CONFIG_OPENGL=y'] : []) + \
2840   (x11.found() ? ['CONFIG_X11=y'] : []) + \
2841   (have_vhost_user ? ['CONFIG_VHOST_USER=y'] : []) + \
2842   (have_vhost_vdpa ? ['CONFIG_VHOST_VDPA=y'] : []) + \
2843   (have_vhost_kernel ? ['CONFIG_VHOST_KERNEL=y'] : []) + \
2844   (have_virtfs ? ['CONFIG_VIRTFS=y'] : []) + \
2845   ('CONFIG_LINUX' in config_host ? ['CONFIG_LINUX=y'] : []) + \
2846   (have_pvrdma ? ['CONFIG_PVRDMA=y'] : []) + \
2847   (multiprocess_allowed ? ['CONFIG_MULTIPROCESS_ALLOWED=y'] : []) + \
2848   (vfio_user_server_allowed ? ['CONFIG_VFIO_USER_SERVER_ALLOWED=y'] : [])
2849
2850 ignored = [ 'TARGET_XML_FILES', 'TARGET_ABI_DIR', 'TARGET_ARCH' ]
2851
2852 default_targets = 'CONFIG_DEFAULT_TARGETS' in config_host
2853 actual_target_dirs = []
2854 fdt_required = []
2855 foreach target : target_dirs
2856   config_target = { 'TARGET_NAME': target.split('-')[0] }
2857   if target.endswith('linux-user')
2858     if targetos != 'linux'
2859       if default_targets
2860         continue
2861       endif
2862       error('Target @0@ is only available on a Linux host'.format(target))
2863     endif
2864     config_target += { 'CONFIG_LINUX_USER': 'y' }
2865   elif target.endswith('bsd-user')
2866     if 'CONFIG_BSD' not in config_host
2867       if default_targets
2868         continue
2869       endif
2870       error('Target @0@ is only available on a BSD host'.format(target))
2871     endif
2872     config_target += { 'CONFIG_BSD_USER': 'y' }
2873   elif target.endswith('softmmu')
2874     config_target += { 'CONFIG_SYSTEM_ONLY': 'y' }
2875     config_target += { 'CONFIG_SOFTMMU': 'y' }
2876   endif
2877   if target.endswith('-user')
2878     config_target += {
2879       'CONFIG_USER_ONLY': 'y',
2880       'CONFIG_QEMU_INTERP_PREFIX':
2881         get_option('interp_prefix').replace('%M', config_target['TARGET_NAME'])
2882     }
2883   endif
2884
2885   accel_kconfig = []
2886   foreach sym: accelerators
2887     if sym == 'CONFIG_TCG' or target in accelerator_targets.get(sym, [])
2888       config_target += { sym: 'y' }
2889       config_all += { sym: 'y' }
2890       if target in modular_tcg
2891         config_target += { 'CONFIG_TCG_MODULAR': 'y' }
2892       else
2893         config_target += { 'CONFIG_TCG_BUILTIN': 'y' }
2894       endif
2895       accel_kconfig += [ sym + '=y' ]
2896     endif
2897   endforeach
2898   if accel_kconfig.length() == 0
2899     if default_targets
2900       continue
2901     endif
2902     error('No accelerator available for target @0@'.format(target))
2903   endif
2904
2905   actual_target_dirs += target
2906   config_target += keyval.load('configs/targets' / target + '.mak')
2907   config_target += { 'TARGET_' + config_target['TARGET_ARCH'].to_upper(): 'y' }
2908
2909   if 'TARGET_NEED_FDT' in config_target
2910     fdt_required += target
2911   endif
2912
2913   # Add default keys
2914   if 'TARGET_BASE_ARCH' not in config_target
2915     config_target += {'TARGET_BASE_ARCH': config_target['TARGET_ARCH']}
2916   endif
2917   if 'TARGET_ABI_DIR' not in config_target
2918     config_target += {'TARGET_ABI_DIR': config_target['TARGET_ARCH']}
2919   endif
2920   if 'TARGET_BIG_ENDIAN' not in config_target
2921     config_target += {'TARGET_BIG_ENDIAN': 'n'}
2922   endif
2923
2924   foreach k, v: disassemblers
2925     if host_arch.startswith(k) or config_target['TARGET_BASE_ARCH'].startswith(k)
2926       foreach sym: v
2927         config_target += { sym: 'y' }
2928         config_all_disas += { sym: 'y' }
2929       endforeach
2930     endif
2931   endforeach
2932
2933   config_target_data = configuration_data()
2934   foreach k, v: config_target
2935     if not k.startswith('TARGET_') and not k.startswith('CONFIG_')
2936       # do nothing
2937     elif ignored.contains(k)
2938       # do nothing
2939     elif k == 'TARGET_BASE_ARCH'
2940       # Note that TARGET_BASE_ARCH ends up in config-target.h but it is
2941       # not used to select files from sourcesets.
2942       config_target_data.set('TARGET_' + v.to_upper(), 1)
2943     elif k == 'TARGET_NAME' or k == 'CONFIG_QEMU_INTERP_PREFIX'
2944       config_target_data.set_quoted(k, v)
2945     elif v == 'y'
2946       config_target_data.set(k, 1)
2947     elif v == 'n'
2948       config_target_data.set(k, 0)
2949     else
2950       config_target_data.set(k, v)
2951     endif
2952   endforeach
2953   config_target_data.set('QEMU_ARCH',
2954                          'QEMU_ARCH_' + config_target['TARGET_BASE_ARCH'].to_upper())
2955   config_target_h += {target: configure_file(output: target + '-config-target.h',
2956                                                configuration: config_target_data)}
2957
2958   if target.endswith('-softmmu')
2959     config_input = meson.get_external_property(target, 'default')
2960     config_devices_mak = target + '-config-devices.mak'
2961     config_devices_mak = configure_file(
2962       input: ['configs/devices' / target / config_input + '.mak', 'Kconfig'],
2963       output: config_devices_mak,
2964       depfile: config_devices_mak + '.d',
2965       capture: true,
2966       command: [minikconf,
2967                 get_option('default_devices') ? '--defconfig' : '--allnoconfig',
2968                 config_devices_mak, '@DEPFILE@', '@INPUT@',
2969                 host_kconfig, accel_kconfig,
2970                 'CONFIG_' + config_target['TARGET_ARCH'].to_upper() + '=y'])
2971
2972     config_devices_data = configuration_data()
2973     config_devices = keyval.load(config_devices_mak)
2974     foreach k, v: config_devices
2975       config_devices_data.set(k, 1)
2976     endforeach
2977     config_devices_mak_list += config_devices_mak
2978     config_devices_h += {target: configure_file(output: target + '-config-devices.h',
2979                                                 configuration: config_devices_data)}
2980     config_target += config_devices
2981     config_all_devices += config_devices
2982   endif
2983   config_target_mak += {target: config_target}
2984 endforeach
2985 target_dirs = actual_target_dirs
2986
2987 # This configuration is used to build files that are shared by
2988 # multiple binaries, and then extracted out of the "common"
2989 # static_library target.
2990 #
2991 # We do not use all_sources()/all_dependencies(), because it would
2992 # build literally all source files, including devices only used by
2993 # targets that are not built for this compilation.  The CONFIG_ALL
2994 # pseudo symbol replaces it.
2995
2996 config_all += config_all_devices
2997 config_all += config_host
2998 config_all += config_all_disas
2999 config_all += {
3000   'CONFIG_XEN': xen.found(),
3001   'CONFIG_SYSTEM_ONLY': have_system,
3002   'CONFIG_USER_ONLY': have_user,
3003   'CONFIG_ALL': true,
3004 }
3005
3006 target_configs_h = []
3007 foreach target: target_dirs
3008   target_configs_h += config_target_h[target]
3009   target_configs_h += config_devices_h.get(target, [])
3010 endforeach
3011 genh += custom_target('config-poison.h',
3012                       input: [target_configs_h],
3013                       output: 'config-poison.h',
3014                       capture: true,
3015                       command: [find_program('scripts/make-config-poison.sh'),
3016                                 target_configs_h])
3017
3018 ##############
3019 # Submodules #
3020 ##############
3021
3022 capstone = not_found
3023 if not get_option('capstone').auto() or have_system or have_user
3024   capstone = dependency('capstone', version: '>=3.0.5',
3025                         method: 'pkg-config',
3026                         required: get_option('capstone'))
3027
3028   # Some versions of capstone have broken pkg-config file
3029   # that reports a wrong -I path, causing the #include to
3030   # fail later. If the system has such a broken version
3031   # do not use it.
3032   if capstone.found() and not cc.compiles('#include <capstone.h>',
3033                                           dependencies: [capstone])
3034     capstone = not_found
3035     if get_option('capstone').enabled()
3036       error('capstone requested, but it does not appear to work')
3037     endif
3038   endif
3039 endif
3040
3041 libvfio_user_dep = not_found
3042 if have_system and vfio_user_server_allowed
3043   libvfio_user_proj = subproject('libvfio-user', required: true)
3044   libvfio_user_dep = libvfio_user_proj.get_variable('libvfio_user_dep')
3045 endif
3046
3047 fdt = not_found
3048 fdt_opt = get_option('fdt')
3049 if fdt_required.length() > 0 or fdt_opt == 'enabled'
3050   if fdt_opt == 'disabled'
3051     error('fdt disabled but required by targets ' + ', '.join(fdt_required))
3052   endif
3053
3054   if fdt_opt in ['enabled', 'auto', 'system']
3055     fdt = cc.find_library('fdt', required: fdt_opt == 'system')
3056     if fdt.found() and cc.links('''
3057        #include <libfdt.h>
3058        #include <libfdt_env.h>
3059        int main(void) { fdt_find_max_phandle(NULL, NULL); return 0; }''',
3060          dependencies: fdt)
3061       fdt_opt = 'system'
3062     elif fdt_opt == 'system'
3063        error('system libfdt requested, but it is too old (1.5.1 or newer required)')
3064     else
3065       fdt_opt = 'internal'
3066       fdt = not_found
3067     endif
3068   endif
3069   if not fdt.found()
3070     assert(fdt_opt == 'internal')
3071     libfdt_proj = subproject('dtc', required: true,
3072                              default_options: ['tools=false',  'yaml=disabled',
3073                                                'python=disabled', 'default_library=static'])
3074     fdt = libfdt_proj.get_variable('libfdt_dep')
3075   endif
3076 else
3077   fdt_opt = 'disabled'
3078 endif
3079
3080 config_host_data.set('CONFIG_CAPSTONE', capstone.found())
3081 config_host_data.set('CONFIG_FDT', fdt.found())
3082 config_host_data.set('CONFIG_SLIRP', slirp.found())
3083
3084 #####################
3085 # Generated sources #
3086 #####################
3087
3088 genh += configure_file(output: 'config-host.h', configuration: config_host_data)
3089
3090 hxtool = find_program('scripts/hxtool')
3091 shaderinclude = find_program('scripts/shaderinclude.py')
3092 qapi_gen = find_program('scripts/qapi-gen.py')
3093 qapi_gen_depends = [ meson.current_source_dir() / 'scripts/qapi/__init__.py',
3094                      meson.current_source_dir() / 'scripts/qapi/commands.py',
3095                      meson.current_source_dir() / 'scripts/qapi/common.py',
3096                      meson.current_source_dir() / 'scripts/qapi/error.py',
3097                      meson.current_source_dir() / 'scripts/qapi/events.py',
3098                      meson.current_source_dir() / 'scripts/qapi/expr.py',
3099                      meson.current_source_dir() / 'scripts/qapi/gen.py',
3100                      meson.current_source_dir() / 'scripts/qapi/introspect.py',
3101                      meson.current_source_dir() / 'scripts/qapi/main.py',
3102                      meson.current_source_dir() / 'scripts/qapi/parser.py',
3103                      meson.current_source_dir() / 'scripts/qapi/schema.py',
3104                      meson.current_source_dir() / 'scripts/qapi/source.py',
3105                      meson.current_source_dir() / 'scripts/qapi/types.py',
3106                      meson.current_source_dir() / 'scripts/qapi/visit.py',
3107                      meson.current_source_dir() / 'scripts/qapi-gen.py'
3108 ]
3109
3110 tracetool = [
3111   python, files('scripts/tracetool.py'),
3112    '--backend=' + ','.join(get_option('trace_backends'))
3113 ]
3114 tracetool_depends = files(
3115   'scripts/tracetool/backend/log.py',
3116   'scripts/tracetool/backend/__init__.py',
3117   'scripts/tracetool/backend/dtrace.py',
3118   'scripts/tracetool/backend/ftrace.py',
3119   'scripts/tracetool/backend/simple.py',
3120   'scripts/tracetool/backend/syslog.py',
3121   'scripts/tracetool/backend/ust.py',
3122   'scripts/tracetool/format/ust_events_c.py',
3123   'scripts/tracetool/format/ust_events_h.py',
3124   'scripts/tracetool/format/__init__.py',
3125   'scripts/tracetool/format/d.py',
3126   'scripts/tracetool/format/simpletrace_stap.py',
3127   'scripts/tracetool/format/c.py',
3128   'scripts/tracetool/format/h.py',
3129   'scripts/tracetool/format/log_stap.py',
3130   'scripts/tracetool/format/stap.py',
3131   'scripts/tracetool/__init__.py',
3132   'scripts/tracetool/vcpu.py'
3133 )
3134
3135 qemu_version_cmd = [find_program('scripts/qemu-version.sh'),
3136                     meson.current_source_dir(),
3137                     get_option('pkgversion'), meson.project_version()]
3138 qemu_version = custom_target('qemu-version.h',
3139                              output: 'qemu-version.h',
3140                              command: qemu_version_cmd,
3141                              capture: true,
3142                              build_by_default: true,
3143                              build_always_stale: true)
3144 genh += qemu_version
3145
3146 hxdep = []
3147 hx_headers = [
3148   ['qemu-options.hx', 'qemu-options.def'],
3149   ['qemu-img-cmds.hx', 'qemu-img-cmds.h'],
3150 ]
3151 if have_system
3152   hx_headers += [
3153     ['hmp-commands.hx', 'hmp-commands.h'],
3154     ['hmp-commands-info.hx', 'hmp-commands-info.h'],
3155   ]
3156 endif
3157 foreach d : hx_headers
3158   hxdep += custom_target(d[1],
3159                 input: files(d[0]),
3160                 output: d[1],
3161                 capture: true,
3162                 build_by_default: true, # to be removed when added to a target
3163                 command: [hxtool, '-h', '@INPUT0@'])
3164 endforeach
3165 genh += hxdep
3166
3167 ###################
3168 # Collect sources #
3169 ###################
3170
3171 authz_ss = ss.source_set()
3172 blockdev_ss = ss.source_set()
3173 block_ss = ss.source_set()
3174 chardev_ss = ss.source_set()
3175 common_ss = ss.source_set()
3176 crypto_ss = ss.source_set()
3177 hwcore_ss = ss.source_set()
3178 io_ss = ss.source_set()
3179 qmp_ss = ss.source_set()
3180 qom_ss = ss.source_set()
3181 system_ss = ss.source_set()
3182 specific_fuzz_ss = ss.source_set()
3183 specific_ss = ss.source_set()
3184 stub_ss = ss.source_set()
3185 trace_ss = ss.source_set()
3186 user_ss = ss.source_set()
3187 util_ss = ss.source_set()
3188
3189 # accel modules
3190 qtest_module_ss = ss.source_set()
3191 tcg_module_ss = ss.source_set()
3192
3193 modules = {}
3194 target_modules = {}
3195 hw_arch = {}
3196 target_arch = {}
3197 target_softmmu_arch = {}
3198 target_user_arch = {}
3199
3200 ###############
3201 # Trace files #
3202 ###############
3203
3204 # TODO: add each directory to the subdirs from its own meson.build, once
3205 # we have those
3206 trace_events_subdirs = [
3207   'crypto',
3208   'qapi',
3209   'qom',
3210   'monitor',
3211   'util',
3212   'gdbstub',
3213 ]
3214 if have_linux_user
3215   trace_events_subdirs += [ 'linux-user' ]
3216 endif
3217 if have_bsd_user
3218   trace_events_subdirs += [ 'bsd-user' ]
3219 endif
3220 if have_block
3221   trace_events_subdirs += [
3222     'authz',
3223     'block',
3224     'io',
3225     'nbd',
3226     'scsi',
3227   ]
3228 endif
3229 if have_system
3230   trace_events_subdirs += [
3231     'accel/kvm',
3232     'audio',
3233     'backends',
3234     'backends/tpm',
3235     'chardev',
3236     'ebpf',
3237     'hw/9pfs',
3238     'hw/acpi',
3239     'hw/adc',
3240     'hw/alpha',
3241     'hw/arm',
3242     'hw/audio',
3243     'hw/block',
3244     'hw/block/dataplane',
3245     'hw/char',
3246     'hw/display',
3247     'hw/dma',
3248     'hw/hyperv',
3249     'hw/i2c',
3250     'hw/i386',
3251     'hw/i386/xen',
3252     'hw/i386/kvm',
3253     'hw/ide',
3254     'hw/input',
3255     'hw/intc',
3256     'hw/isa',
3257     'hw/mem',
3258     'hw/mips',
3259     'hw/misc',
3260     'hw/misc/macio',
3261     'hw/net',
3262     'hw/net/can',
3263     'hw/nubus',
3264     'hw/nvme',
3265     'hw/nvram',
3266     'hw/pci',
3267     'hw/pci-host',
3268     'hw/ppc',
3269     'hw/rdma',
3270     'hw/rdma/vmw',
3271     'hw/rtc',
3272     'hw/s390x',
3273     'hw/scsi',
3274     'hw/sd',
3275     'hw/sh4',
3276     'hw/sparc',
3277     'hw/sparc64',
3278     'hw/ssi',
3279     'hw/timer',
3280     'hw/tpm',
3281     'hw/usb',
3282     'hw/vfio',
3283     'hw/virtio',
3284     'hw/watchdog',
3285     'hw/xen',
3286     'hw/gpio',
3287     'migration',
3288     'net',
3289     'softmmu',
3290     'ui',
3291     'hw/remote',
3292   ]
3293 endif
3294 if have_system or have_user
3295   trace_events_subdirs += [
3296     'accel/tcg',
3297     'hw/core',
3298     'target/arm',
3299     'target/arm/hvf',
3300     'target/hppa',
3301     'target/i386',
3302     'target/i386/kvm',
3303     'target/mips/tcg',
3304     'target/nios2',
3305     'target/ppc',
3306     'target/riscv',
3307     'target/s390x',
3308     'target/s390x/kvm',
3309     'target/sparc',
3310   ]
3311 endif
3312
3313 vhost_user = not_found
3314 if targetos == 'linux' and have_vhost_user
3315   libvhost_user = subproject('libvhost-user')
3316   vhost_user = libvhost_user.get_variable('vhost_user_dep')
3317 endif
3318
3319 libvduse = not_found
3320 if have_libvduse
3321   libvduse_proj = subproject('libvduse')
3322   libvduse = libvduse_proj.get_variable('libvduse_dep')
3323 endif
3324
3325 # NOTE: the trace/ subdirectory needs the qapi_trace_events variable
3326 # that is filled in by qapi/.
3327 subdir('qapi')
3328 subdir('qobject')
3329 subdir('stubs')
3330 subdir('trace')
3331 subdir('util')
3332 subdir('qom')
3333 subdir('authz')
3334 subdir('crypto')
3335 subdir('ui')
3336 subdir('hw')
3337 subdir('gdbstub')
3338
3339 if enable_modules
3340   libmodulecommon = static_library('module-common', files('module-common.c') + genh, pic: true, c_args: '-DBUILD_DSO')
3341   modulecommon = declare_dependency(link_whole: libmodulecommon, compile_args: '-DBUILD_DSO')
3342 endif
3343
3344 qom_ss = qom_ss.apply(config_host, strict: false)
3345 libqom = static_library('qom', qom_ss.sources() + genh,
3346                         dependencies: [qom_ss.dependencies()],
3347                         name_suffix: 'fa')
3348 qom = declare_dependency(link_whole: libqom)
3349
3350 event_loop_base = files('event-loop-base.c')
3351 event_loop_base = static_library('event-loop-base', sources: event_loop_base + genh,
3352                                  build_by_default: true)
3353 event_loop_base = declare_dependency(link_whole: event_loop_base,
3354                                      dependencies: [qom])
3355
3356 stub_ss = stub_ss.apply(config_all, strict: false)
3357
3358 util_ss.add_all(trace_ss)
3359 util_ss = util_ss.apply(config_all, strict: false)
3360 libqemuutil = static_library('qemuutil',
3361                              sources: util_ss.sources() + stub_ss.sources() + genh,
3362                              dependencies: [util_ss.dependencies(), libm, threads, glib, socket, malloc, pixman])
3363 qemuutil = declare_dependency(link_with: libqemuutil,
3364                               sources: genh + version_res,
3365                               dependencies: [event_loop_base])
3366
3367 if have_system or have_user
3368   decodetree = generator(find_program('scripts/decodetree.py'),
3369                          output: 'decode-@BASENAME@.c.inc',
3370                          arguments: ['@INPUT@', '@EXTRA_ARGS@', '-o', '@OUTPUT@'])
3371   subdir('libdecnumber')
3372   subdir('target')
3373 endif
3374
3375 subdir('audio')
3376 subdir('io')
3377 subdir('chardev')
3378 subdir('fsdev')
3379 subdir('dump')
3380
3381 if have_block
3382   block_ss.add(files(
3383     'block.c',
3384     'blockjob.c',
3385     'job.c',
3386     'qemu-io-cmds.c',
3387   ))
3388   if config_host_data.get('CONFIG_REPLICATION')
3389     block_ss.add(files('replication.c'))
3390   endif
3391
3392   subdir('nbd')
3393   subdir('scsi')
3394   subdir('block')
3395
3396   blockdev_ss.add(files(
3397     'blockdev.c',
3398     'blockdev-nbd.c',
3399     'iothread.c',
3400     'job-qmp.c',
3401   ), gnutls)
3402
3403   # os-posix.c contains POSIX-specific functions used by qemu-storage-daemon,
3404   # os-win32.c does not
3405   blockdev_ss.add(when: 'CONFIG_POSIX', if_true: files('os-posix.c'))
3406   system_ss.add(when: 'CONFIG_WIN32', if_true: [files('os-win32.c')])
3407 endif
3408
3409 common_ss.add(files('cpus-common.c'))
3410 specific_ss.add(files('cpu.c'))
3411
3412 subdir('softmmu')
3413
3414 # Work around a gcc bug/misfeature wherein constant propagation looks
3415 # through an alias:
3416 #   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99696
3417 # to guess that a const variable is always zero.  Without lto, this is
3418 # impossible, as the alias is restricted to page-vary-common.c.  Indeed,
3419 # without lto, not even the alias is required -- we simply use different
3420 # declarations in different compilation units.
3421 pagevary = files('page-vary-common.c')
3422 if get_option('b_lto')
3423   pagevary_flags = ['-fno-lto']
3424   if get_option('cfi')
3425     pagevary_flags += '-fno-sanitize=cfi-icall'
3426   endif
3427   pagevary = static_library('page-vary-common', sources: pagevary + genh,
3428                             c_args: pagevary_flags)
3429   pagevary = declare_dependency(link_with: pagevary)
3430 endif
3431 common_ss.add(pagevary)
3432 specific_ss.add(files('page-vary.c'))
3433
3434 subdir('backends')
3435 subdir('disas')
3436 subdir('migration')
3437 subdir('monitor')
3438 subdir('net')
3439 subdir('replay')
3440 subdir('semihosting')
3441 subdir('stats')
3442 subdir('tcg')
3443 subdir('fpu')
3444 subdir('accel')
3445 subdir('plugins')
3446 subdir('ebpf')
3447
3448 common_user_inc = []
3449
3450 subdir('common-user')
3451 subdir('bsd-user')
3452 subdir('linux-user')
3453
3454 # needed for fuzzing binaries
3455 subdir('tests/qtest/libqos')
3456 subdir('tests/qtest/fuzz')
3457
3458 # accel modules
3459 tcg_real_module_ss = ss.source_set()
3460 tcg_real_module_ss.add_all(when: 'CONFIG_TCG_MODULAR', if_true: tcg_module_ss)
3461 specific_ss.add_all(when: 'CONFIG_TCG_BUILTIN', if_true: tcg_module_ss)
3462 target_modules += { 'accel' : { 'qtest': qtest_module_ss,
3463                                 'tcg': tcg_real_module_ss }}
3464
3465 ########################
3466 # Library dependencies #
3467 ########################
3468
3469 modinfo_collect = find_program('scripts/modinfo-collect.py')
3470 modinfo_generate = find_program('scripts/modinfo-generate.py')
3471 modinfo_files = []
3472
3473 block_mods = []
3474 softmmu_mods = []
3475 foreach d, list : modules
3476   if not (d == 'block' ? have_block : have_system)
3477     continue
3478   endif
3479
3480   foreach m, module_ss : list
3481     if enable_modules
3482       module_ss = module_ss.apply(config_all, strict: false)
3483       sl = static_library(d + '-' + m, [genh, module_ss.sources()],
3484                           dependencies: [modulecommon, module_ss.dependencies()], pic: true)
3485       if d == 'block'
3486         block_mods += sl
3487       else
3488         softmmu_mods += sl
3489       endif
3490       if module_ss.sources() != []
3491         # FIXME: Should use sl.extract_all_objects(recursive: true) as
3492         # input. Sources can be used multiple times but objects are
3493         # unique when it comes to lookup in compile_commands.json.
3494         # Depnds on a mesion version with
3495         # https://github.com/mesonbuild/meson/pull/8900
3496         modinfo_files += custom_target(d + '-' + m + '.modinfo',
3497                                        output: d + '-' + m + '.modinfo',
3498                                        input: module_ss.sources() + genh,
3499                                        capture: true,
3500                                        command: [modinfo_collect, module_ss.sources()])
3501       endif
3502     else
3503       if d == 'block'
3504         block_ss.add_all(module_ss)
3505       else
3506         system_ss.add_all(module_ss)
3507       endif
3508     endif
3509   endforeach
3510 endforeach
3511
3512 foreach d, list : target_modules
3513   foreach m, module_ss : list
3514     if enable_modules
3515       foreach target : target_dirs
3516         if target.endswith('-softmmu')
3517           config_target = config_target_mak[target]
3518           config_target += config_host
3519           target_inc = [include_directories('target' / config_target['TARGET_BASE_ARCH'])]
3520           c_args = ['-DNEED_CPU_H',
3521                     '-DCONFIG_TARGET="@0@-config-target.h"'.format(target),
3522                     '-DCONFIG_DEVICES="@0@-config-devices.h"'.format(target)]
3523           target_module_ss = module_ss.apply(config_target, strict: false)
3524           if target_module_ss.sources() != []
3525             module_name = d + '-' + m + '-' + config_target['TARGET_NAME']
3526             sl = static_library(module_name,
3527                                 [genh, target_module_ss.sources()],
3528                                 dependencies: [modulecommon, target_module_ss.dependencies()],
3529                                 include_directories: target_inc,
3530                                 c_args: c_args,
3531                                 pic: true)
3532             softmmu_mods += sl
3533             # FIXME: Should use sl.extract_all_objects(recursive: true) too.
3534             modinfo_files += custom_target(module_name + '.modinfo',
3535                                            output: module_name + '.modinfo',
3536                                            input: target_module_ss.sources() + genh,
3537                                            capture: true,
3538                                            command: [modinfo_collect, '--target', target, target_module_ss.sources()])
3539           endif
3540         endif
3541       endforeach
3542     else
3543       specific_ss.add_all(module_ss)
3544     endif
3545   endforeach
3546 endforeach
3547
3548 if enable_modules
3549   foreach target : target_dirs
3550     if target.endswith('-softmmu')
3551       config_target = config_target_mak[target]
3552       config_devices_mak = target + '-config-devices.mak'
3553       modinfo_src = custom_target('modinfo-' + target + '.c',
3554                                   output: 'modinfo-' + target + '.c',
3555                                   input: modinfo_files,
3556                                   command: [modinfo_generate, '--devices', config_devices_mak, '@INPUT@'],
3557                                   capture: true)
3558
3559       modinfo_lib = static_library('modinfo-' + target + '.c', modinfo_src)
3560       modinfo_dep = declare_dependency(link_with: modinfo_lib)
3561
3562       arch = config_target['TARGET_NAME'] == 'sparc64' ? 'sparc64' : config_target['TARGET_BASE_ARCH']
3563       hw_arch[arch].add(modinfo_dep)
3564     endif
3565   endforeach
3566 endif
3567
3568 nm = find_program('nm')
3569 undefsym = find_program('scripts/undefsym.py')
3570 block_syms = custom_target('block.syms', output: 'block.syms',
3571                              input: [libqemuutil, block_mods],
3572                              capture: true,
3573                              command: [undefsym, nm, '@INPUT@'])
3574 qemu_syms = custom_target('qemu.syms', output: 'qemu.syms',
3575                              input: [libqemuutil, softmmu_mods],
3576                              capture: true,
3577                              command: [undefsym, nm, '@INPUT@'])
3578
3579 authz_ss = authz_ss.apply(config_host, strict: false)
3580 libauthz = static_library('authz', authz_ss.sources() + genh,
3581                           dependencies: [authz_ss.dependencies()],
3582                           name_suffix: 'fa',
3583                           build_by_default: false)
3584
3585 authz = declare_dependency(link_whole: libauthz,
3586                            dependencies: qom)
3587
3588 crypto_ss = crypto_ss.apply(config_host, strict: false)
3589 libcrypto = static_library('crypto', crypto_ss.sources() + genh,
3590                            dependencies: [crypto_ss.dependencies()],
3591                            name_suffix: 'fa',
3592                            build_by_default: false)
3593
3594 crypto = declare_dependency(link_whole: libcrypto,
3595                             dependencies: [authz, qom])
3596
3597 io_ss = io_ss.apply(config_host, strict: false)
3598 libio = static_library('io', io_ss.sources() + genh,
3599                        dependencies: [io_ss.dependencies()],
3600                        link_with: libqemuutil,
3601                        name_suffix: 'fa',
3602                        build_by_default: false)
3603
3604 io = declare_dependency(link_whole: libio, dependencies: [crypto, qom])
3605
3606 libmigration = static_library('migration', sources: migration_files + genh,
3607                               name_suffix: 'fa',
3608                               build_by_default: false)
3609 migration = declare_dependency(link_with: libmigration,
3610                                dependencies: [zlib, qom, io])
3611 system_ss.add(migration)
3612
3613 block_ss = block_ss.apply(config_host, strict: false)
3614 libblock = static_library('block', block_ss.sources() + genh,
3615                           dependencies: block_ss.dependencies(),
3616                           link_depends: block_syms,
3617                           name_suffix: 'fa',
3618                           build_by_default: false)
3619
3620 block = declare_dependency(link_whole: [libblock],
3621                            link_args: '@block.syms',
3622                            dependencies: [crypto, io])
3623
3624 blockdev_ss = blockdev_ss.apply(config_host, strict: false)
3625 libblockdev = static_library('blockdev', blockdev_ss.sources() + genh,
3626                              dependencies: blockdev_ss.dependencies(),
3627                              name_suffix: 'fa',
3628                              build_by_default: false)
3629
3630 blockdev = declare_dependency(link_whole: [libblockdev],
3631                               dependencies: [block, event_loop_base])
3632
3633 qmp_ss = qmp_ss.apply(config_host, strict: false)
3634 libqmp = static_library('qmp', qmp_ss.sources() + genh,
3635                         dependencies: qmp_ss.dependencies(),
3636                         name_suffix: 'fa',
3637                         build_by_default: false)
3638
3639 qmp = declare_dependency(link_whole: [libqmp])
3640
3641 libchardev = static_library('chardev', chardev_ss.sources() + genh,
3642                             name_suffix: 'fa',
3643                             dependencies: chardev_ss.dependencies(),
3644                             build_by_default: false)
3645
3646 chardev = declare_dependency(link_whole: libchardev)
3647
3648 hwcore_ss = hwcore_ss.apply(config_host, strict: false)
3649 libhwcore = static_library('hwcore', sources: hwcore_ss.sources() + genh,
3650                            name_suffix: 'fa',
3651                            build_by_default: false)
3652 hwcore = declare_dependency(link_whole: libhwcore)
3653 common_ss.add(hwcore)
3654
3655 ###########
3656 # Targets #
3657 ###########
3658
3659 emulator_modules = []
3660 foreach m : block_mods + softmmu_mods
3661   emulator_modules += shared_module(m.name(),
3662                 build_by_default: true,
3663                 name_prefix: '',
3664                 link_whole: m,
3665                 install: true,
3666                 install_dir: qemu_moddir)
3667 endforeach
3668 if emulator_modules.length() > 0
3669   alias_target('modules', emulator_modules)
3670 endif
3671
3672 system_ss.add(authz, blockdev, chardev, crypto, io, qmp)
3673 common_ss.add(qom, qemuutil)
3674
3675 common_ss.add_all(when: 'CONFIG_SYSTEM_ONLY', if_true: [system_ss])
3676 common_ss.add_all(when: 'CONFIG_USER_ONLY', if_true: user_ss)
3677
3678 common_all = common_ss.apply(config_all, strict: false)
3679 common_all = static_library('common',
3680                             build_by_default: false,
3681                             sources: common_all.sources() + genh,
3682                             include_directories: common_user_inc,
3683                             implicit_include_directories: false,
3684                             dependencies: common_all.dependencies(),
3685                             name_suffix: 'fa')
3686
3687 feature_to_c = find_program('scripts/feature_to_c.sh')
3688
3689 if targetos == 'darwin'
3690   entitlement = find_program('scripts/entitlement.sh')
3691 endif
3692
3693 emulators = {}
3694 foreach target : target_dirs
3695   config_target = config_target_mak[target]
3696   target_name = config_target['TARGET_NAME']
3697   target_base_arch = config_target['TARGET_BASE_ARCH']
3698   arch_srcs = [config_target_h[target]]
3699   arch_deps = []
3700   c_args = ['-DNEED_CPU_H',
3701             '-DCONFIG_TARGET="@0@-config-target.h"'.format(target),
3702             '-DCONFIG_DEVICES="@0@-config-devices.h"'.format(target)]
3703   link_args = emulator_link_args
3704
3705   config_target += config_host
3706   target_inc = [include_directories('target' / config_target['TARGET_BASE_ARCH'])]
3707   if targetos == 'linux'
3708     target_inc += include_directories('linux-headers', is_system: true)
3709   endif
3710   if target.endswith('-softmmu')
3711     target_type='system'
3712     t = target_softmmu_arch[target_base_arch].apply(config_target, strict: false)
3713     arch_srcs += t.sources()
3714     arch_deps += t.dependencies()
3715
3716     hw_dir = target_name == 'sparc64' ? 'sparc64' : target_base_arch
3717     hw = hw_arch[hw_dir].apply(config_target, strict: false)
3718     arch_srcs += hw.sources()
3719     arch_deps += hw.dependencies()
3720
3721     arch_srcs += config_devices_h[target]
3722     link_args += ['@block.syms', '@qemu.syms']
3723   else
3724     abi = config_target['TARGET_ABI_DIR']
3725     target_type='user'
3726     target_inc += common_user_inc
3727     if target_base_arch in target_user_arch
3728       t = target_user_arch[target_base_arch].apply(config_target, strict: false)
3729       arch_srcs += t.sources()
3730       arch_deps += t.dependencies()
3731     endif
3732     if 'CONFIG_LINUX_USER' in config_target
3733       base_dir = 'linux-user'
3734     endif
3735     if 'CONFIG_BSD_USER' in config_target
3736       base_dir = 'bsd-user'
3737       target_inc += include_directories('bsd-user/' / targetos)
3738       target_inc += include_directories('bsd-user/host/' / host_arch)
3739       dir = base_dir / abi
3740       arch_srcs += files(dir / 'signal.c', dir / 'target_arch_cpu.c')
3741     endif
3742     target_inc += include_directories(
3743       base_dir,
3744       base_dir / abi,
3745     )
3746     if 'CONFIG_LINUX_USER' in config_target
3747       dir = base_dir / abi
3748       arch_srcs += files(dir / 'signal.c', dir / 'cpu_loop.c')
3749       if config_target.has_key('TARGET_SYSTBL_ABI')
3750         arch_srcs += \
3751           syscall_nr_generators[abi].process(base_dir / abi / config_target['TARGET_SYSTBL'],
3752                                              extra_args : config_target['TARGET_SYSTBL_ABI'])
3753       endif
3754     endif
3755   endif
3756
3757   if 'TARGET_XML_FILES' in config_target
3758     gdbstub_xml = custom_target(target + '-gdbstub-xml.c',
3759                                 output: target + '-gdbstub-xml.c',
3760                                 input: files(config_target['TARGET_XML_FILES'].split()),
3761                                 command: [feature_to_c, '@INPUT@'],
3762                                 capture: true)
3763     arch_srcs += gdbstub_xml
3764   endif
3765
3766   t = target_arch[target_base_arch].apply(config_target, strict: false)
3767   arch_srcs += t.sources()
3768   arch_deps += t.dependencies()
3769
3770   target_common = common_ss.apply(config_target, strict: false)
3771   objects = common_all.extract_objects(target_common.sources())
3772   deps = target_common.dependencies()
3773
3774   target_specific = specific_ss.apply(config_target, strict: false)
3775   arch_srcs += target_specific.sources()
3776   arch_deps += target_specific.dependencies()
3777
3778   lib = static_library('qemu-' + target,
3779                  sources: arch_srcs + genh,
3780                  dependencies: arch_deps,
3781                  objects: objects,
3782                  include_directories: target_inc,
3783                  c_args: c_args,
3784                  build_by_default: false,
3785                  name_suffix: 'fa')
3786
3787   if target.endswith('-softmmu')
3788     execs = [{
3789       'name': 'qemu-system-' + target_name,
3790       'win_subsystem': 'console',
3791       'sources': files('softmmu/main.c'),
3792       'dependencies': []
3793     }]
3794     if targetos == 'windows' and (sdl.found() or gtk.found())
3795       execs += [{
3796         'name': 'qemu-system-' + target_name + 'w',
3797         'win_subsystem': 'windows',
3798         'sources': files('softmmu/main.c'),
3799         'dependencies': []
3800       }]
3801     endif
3802     if get_option('fuzzing')
3803       specific_fuzz = specific_fuzz_ss.apply(config_target, strict: false)
3804       execs += [{
3805         'name': 'qemu-fuzz-' + target_name,
3806         'win_subsystem': 'console',
3807         'sources': specific_fuzz.sources(),
3808         'dependencies': specific_fuzz.dependencies(),
3809       }]
3810     endif
3811   else
3812     execs = [{
3813       'name': 'qemu-' + target_name,
3814       'win_subsystem': 'console',
3815       'sources': [],
3816       'dependencies': []
3817     }]
3818   endif
3819   foreach exe: execs
3820     exe_name = exe['name']
3821     if targetos == 'darwin'
3822       exe_name += '-unsigned'
3823     endif
3824
3825     emulator = executable(exe_name, exe['sources'],
3826                install: true,
3827                c_args: c_args,
3828                dependencies: arch_deps + deps + exe['dependencies'],
3829                objects: lib.extract_all_objects(recursive: true),
3830                link_depends: [block_syms, qemu_syms] + exe.get('link_depends', []),
3831                link_args: link_args,
3832                win_subsystem: exe['win_subsystem'])
3833
3834     if targetos == 'darwin'
3835       icon = 'pc-bios/qemu.rsrc'
3836       build_input = [emulator, files(icon)]
3837       install_input = [
3838         get_option('bindir') / exe_name,
3839         meson.current_source_dir() / icon
3840       ]
3841       if 'CONFIG_HVF' in config_target
3842         entitlements = 'accel/hvf/entitlements.plist'
3843         build_input += files(entitlements)
3844         install_input += meson.current_source_dir() / entitlements
3845       endif
3846
3847       emulators += {exe['name'] : custom_target(exe['name'],
3848                    input: build_input,
3849                    output: exe['name'],
3850                    command: [entitlement, '@OUTPUT@', '@INPUT@'])
3851       }
3852
3853       meson.add_install_script(entitlement, '--install',
3854                                get_option('bindir') / exe['name'],
3855                                install_input)
3856     else
3857       emulators += {exe['name']: emulator}
3858     endif
3859
3860     if stap.found()
3861       foreach stp: [
3862         {'ext': '.stp-build', 'fmt': 'stap', 'bin': meson.current_build_dir() / exe['name'], 'install': false},
3863         {'ext': '.stp', 'fmt': 'stap', 'bin': get_option('prefix') / get_option('bindir') / exe['name'], 'install': true},
3864         {'ext': '-simpletrace.stp', 'fmt': 'simpletrace-stap', 'bin': '', 'install': true},
3865         {'ext': '-log.stp', 'fmt': 'log-stap', 'bin': '', 'install': true},
3866       ]
3867         custom_target(exe['name'] + stp['ext'],
3868                       input: trace_events_all,
3869                       output: exe['name'] + stp['ext'],
3870                       install: stp['install'],
3871                       install_dir: get_option('datadir') / 'systemtap/tapset',
3872                       command: [
3873                         tracetool, '--group=all', '--format=' + stp['fmt'],
3874                         '--binary=' + stp['bin'],
3875                         '--target-name=' + target_name,
3876                         '--target-type=' + target_type,
3877                         '--probe-prefix=qemu.' + target_type + '.' + target_name,
3878                         '@INPUT@', '@OUTPUT@'
3879                       ],
3880                       depend_files: tracetool_depends)
3881       endforeach
3882     endif
3883   endforeach
3884 endforeach
3885
3886 # Other build targets
3887
3888 if get_option('plugins')
3889   install_headers('include/qemu/qemu-plugin.h')
3890 endif
3891
3892 subdir('qga')
3893
3894 # Don't build qemu-keymap if xkbcommon is not explicitly enabled
3895 # when we don't build tools or system
3896 if xkbcommon.found()
3897   # used for the update-keymaps target, so include rules even if !have_tools
3898   qemu_keymap = executable('qemu-keymap', files('qemu-keymap.c', 'ui/input-keymap.c') + genh,
3899                            dependencies: [qemuutil, xkbcommon], install: have_tools)
3900 endif
3901
3902 if have_tools
3903   qemu_img = executable('qemu-img', [files('qemu-img.c'), hxdep],
3904              dependencies: [authz, block, crypto, io, qom, qemuutil], install: true)
3905   qemu_io = executable('qemu-io', files('qemu-io.c'),
3906              dependencies: [block, qemuutil], install: true)
3907   qemu_nbd = executable('qemu-nbd', files('qemu-nbd.c'),
3908                dependencies: [blockdev, qemuutil, gnutls, selinux],
3909                install: true)
3910
3911   subdir('storage-daemon')
3912   subdir('contrib/rdmacm-mux')
3913   subdir('contrib/elf2dmp')
3914
3915   executable('qemu-edid', files('qemu-edid.c', 'hw/display/edid-generate.c'),
3916              dependencies: qemuutil,
3917              install: true)
3918
3919   if have_vhost_user
3920     subdir('contrib/vhost-user-blk')
3921     subdir('contrib/vhost-user-gpu')
3922     subdir('contrib/vhost-user-input')
3923     subdir('contrib/vhost-user-scsi')
3924   endif
3925
3926   if targetos == 'linux'
3927     executable('qemu-bridge-helper', files('qemu-bridge-helper.c'),
3928                dependencies: [qemuutil, libcap_ng],
3929                install: true,
3930                install_dir: get_option('libexecdir'))
3931
3932     executable('qemu-pr-helper', files('scsi/qemu-pr-helper.c', 'scsi/utils.c'),
3933                dependencies: [authz, crypto, io, qom, qemuutil,
3934                               libcap_ng, mpathpersist],
3935                install: true)
3936   endif
3937
3938   if have_ivshmem
3939     subdir('contrib/ivshmem-client')
3940     subdir('contrib/ivshmem-server')
3941   endif
3942 endif
3943
3944 subdir('scripts')
3945 subdir('tools')
3946 subdir('pc-bios')
3947 subdir('docs')
3948 subdir('tests')
3949 if gtk.found()
3950   subdir('po')
3951 endif
3952
3953 if host_machine.system() == 'windows'
3954   nsis_cmd = [
3955     find_program('scripts/nsis.py'),
3956     '@OUTPUT@',
3957     get_option('prefix'),
3958     meson.current_source_dir(),
3959     glib_pc.get_variable('bindir'),
3960     host_machine.cpu(),
3961     '--',
3962     '-DDISPLAYVERSION=' + meson.project_version(),
3963   ]
3964   if build_docs
3965     nsis_cmd += '-DCONFIG_DOCUMENTATION=y'
3966   endif
3967   if gtk.found()
3968     nsis_cmd += '-DCONFIG_GTK=y'
3969   endif
3970
3971   nsis = custom_target('nsis',
3972                        output: 'qemu-setup-' + meson.project_version() + '.exe',
3973                        input: files('qemu.nsi'),
3974                        build_always_stale: true,
3975                        command: nsis_cmd + ['@INPUT@'])
3976   alias_target('installer', nsis)
3977 endif
3978
3979 #########################
3980 # Configuration summary #
3981 #########################
3982
3983 # Build environment
3984 summary_info = {}
3985 summary_info += {'Build directory':   meson.current_build_dir()}
3986 summary_info += {'Source path':       meson.current_source_dir()}
3987 summary_info += {'Download dependencies': get_option('wrap_mode') != 'nodownload'}
3988 summary(summary_info, bool_yn: true, section: 'Build environment')
3989
3990 # Directories
3991 summary_info += {'Install prefix':    get_option('prefix')}
3992 summary_info += {'BIOS directory':    qemu_datadir}
3993 pathsep = targetos == 'windows' ? ';' : ':'
3994 summary_info += {'firmware path':     pathsep.join(get_option('qemu_firmwarepath'))}
3995 summary_info += {'binary directory':  get_option('prefix') / get_option('bindir')}
3996 summary_info += {'library directory': get_option('prefix') / get_option('libdir')}
3997 summary_info += {'module directory':  qemu_moddir}
3998 summary_info += {'libexec directory': get_option('prefix') / get_option('libexecdir')}
3999 summary_info += {'include directory': get_option('prefix') / get_option('includedir')}
4000 summary_info += {'config directory':  get_option('prefix') / get_option('sysconfdir')}
4001 if targetos != 'windows'
4002   summary_info += {'local state directory': get_option('prefix') / get_option('localstatedir')}
4003   summary_info += {'Manual directory':      get_option('prefix') / get_option('mandir')}
4004 else
4005   summary_info += {'local state directory': 'queried at runtime'}
4006 endif
4007 summary_info += {'Doc directory':     get_option('prefix') / get_option('docdir')}
4008 summary(summary_info, bool_yn: true, section: 'Directories')
4009
4010 # Host binaries
4011 summary_info = {}
4012 summary_info += {'python':            '@0@ (version: @1@)'.format(python.full_path(), python.language_version())}
4013 summary_info += {'sphinx-build':      sphinx_build}
4014 if config_host.has_key('HAVE_GDB_BIN')
4015   summary_info += {'gdb':             config_host['HAVE_GDB_BIN']}
4016 endif
4017 summary_info += {'iasl':              iasl}
4018 summary_info += {'genisoimage':       config_host['GENISOIMAGE']}
4019 if targetos == 'windows' and have_ga
4020   summary_info += {'wixl':            wixl}
4021 endif
4022 if slirp.found() and have_system
4023   summary_info += {'smbd':            have_slirp_smbd ? smbd_path : false}
4024 endif
4025 summary(summary_info, bool_yn: true, section: 'Host binaries')
4026
4027 # Configurable features
4028 summary_info = {}
4029 summary_info += {'Documentation':     build_docs}
4030 summary_info += {'system-mode emulation': have_system}
4031 summary_info += {'user-mode emulation': have_user}
4032 summary_info += {'block layer':       have_block}
4033 summary_info += {'Install blobs':     get_option('install_blobs')}
4034 summary_info += {'module support':    enable_modules}
4035 if enable_modules
4036   summary_info += {'alternative module path': get_option('module_upgrades')}
4037 endif
4038 summary_info += {'fuzzing support':   get_option('fuzzing')}
4039 if have_system
4040   summary_info += {'Audio drivers':     ' '.join(audio_drivers_selected)}
4041 endif
4042 summary_info += {'Trace backends':    ','.join(get_option('trace_backends'))}
4043 if 'simple' in get_option('trace_backends')
4044   summary_info += {'Trace output file': get_option('trace_file') + '-<pid>'}
4045 endif
4046 summary_info += {'D-Bus display':     dbus_display}
4047 summary_info += {'QOM debugging':     get_option('qom_cast_debug')}
4048 summary_info += {'vhost-kernel support': have_vhost_kernel}
4049 summary_info += {'vhost-net support': have_vhost_net}
4050 summary_info += {'vhost-user support': have_vhost_user}
4051 summary_info += {'vhost-user-crypto support': have_vhost_user_crypto}
4052 summary_info += {'vhost-user-blk server support': have_vhost_user_blk_server}
4053 summary_info += {'vhost-vdpa support': have_vhost_vdpa}
4054 summary_info += {'build guest agent': have_ga}
4055 summary(summary_info, bool_yn: true, section: 'Configurable features')
4056
4057 # Compilation information
4058 summary_info = {}
4059 summary_info += {'host CPU':          cpu}
4060 summary_info += {'host endianness':   build_machine.endian()}
4061 summary_info += {'C compiler':        ' '.join(meson.get_compiler('c').cmd_array())}
4062 summary_info += {'Host C compiler':   ' '.join(meson.get_compiler('c', native: true).cmd_array())}
4063 if 'cpp' in all_languages
4064   summary_info += {'C++ compiler':    ' '.join(meson.get_compiler('cpp').cmd_array())}
4065 else
4066   summary_info += {'C++ compiler':      false}
4067 endif
4068 if targetos == 'darwin'
4069   summary_info += {'Objective-C compiler': ' '.join(meson.get_compiler('objc').cmd_array())}
4070 endif
4071 option_cflags = (get_option('debug') ? ['-g'] : [])
4072 if get_option('optimization') != 'plain'
4073   option_cflags += ['-O' + get_option('optimization')]
4074 endif
4075 summary_info += {'CFLAGS':            ' '.join(get_option('c_args') + option_cflags)}
4076 if 'cpp' in all_languages
4077   summary_info += {'CXXFLAGS':        ' '.join(get_option('cpp_args') + option_cflags)}
4078 endif
4079 if targetos == 'darwin'
4080   summary_info += {'OBJCFLAGS':       ' '.join(get_option('objc_args') + option_cflags)}
4081 endif
4082 link_args = get_option('c_link_args')
4083 if link_args.length() > 0
4084   summary_info += {'LDFLAGS':         ' '.join(link_args)}
4085 endif
4086 summary_info += {'QEMU_CFLAGS':       ' '.join(qemu_common_flags + qemu_cflags)}
4087 if 'cpp' in all_languages
4088   summary_info += {'QEMU_CXXFLAGS':     ' '.join(qemu_common_flags + qemu_cxxflags)}
4089 endif
4090 if 'objc' in all_languages
4091   summary_info += {'QEMU_OBJCFLAGS':    ' '.join(qemu_common_flags)}
4092 endif
4093 summary_info += {'QEMU_LDFLAGS':      ' '.join(qemu_ldflags)}
4094 summary_info += {'link-time optimization (LTO)': get_option('b_lto')}
4095 summary_info += {'PIE':               get_option('b_pie')}
4096 summary_info += {'static build':      get_option('prefer_static')}
4097 summary_info += {'malloc trim support': has_malloc_trim}
4098 summary_info += {'membarrier':        have_membarrier}
4099 summary_info += {'debug graph lock':  get_option('debug_graph_lock')}
4100 summary_info += {'debug stack usage': get_option('debug_stack_usage')}
4101 summary_info += {'mutex debugging':   get_option('debug_mutex')}
4102 summary_info += {'memory allocator':  get_option('malloc')}
4103 summary_info += {'avx2 optimization': config_host_data.get('CONFIG_AVX2_OPT')}
4104 summary_info += {'avx512bw optimization': config_host_data.get('CONFIG_AVX512BW_OPT')}
4105 summary_info += {'avx512f optimization': config_host_data.get('CONFIG_AVX512F_OPT')}
4106 if get_option('gprof')
4107   gprof_info = 'YES (deprecated)'
4108 else
4109   gprof_info = get_option('gprof')
4110 endif
4111 summary_info += {'gprof':             gprof_info}
4112 summary_info += {'gcov':              get_option('b_coverage')}
4113 summary_info += {'thread sanitizer':  get_option('tsan')}
4114 summary_info += {'CFI support':       get_option('cfi')}
4115 if get_option('cfi')
4116   summary_info += {'CFI debug support': get_option('cfi_debug')}
4117 endif
4118 summary_info += {'strip binaries':    get_option('strip')}
4119 summary_info += {'sparse':            sparse}
4120 summary_info += {'mingw32 support':   targetos == 'windows'}
4121 summary(summary_info, bool_yn: true, section: 'Compilation')
4122
4123 # snarf the cross-compilation information for tests
4124 summary_info = {}
4125 have_cross = false
4126 foreach target: target_dirs
4127   tcg_mak = meson.current_build_dir() / 'tests/tcg' / target / 'config-target.mak'
4128   if fs.exists(tcg_mak)
4129     config_cross_tcg = keyval.load(tcg_mak)
4130     if 'CC' in config_cross_tcg
4131       summary_info += {config_cross_tcg['TARGET_NAME']: config_cross_tcg['CC']}
4132       have_cross = true
4133     endif
4134   endif
4135 endforeach
4136 if have_cross
4137   summary(summary_info, bool_yn: true, section: 'Cross compilers')
4138 endif
4139
4140 # Targets and accelerators
4141 summary_info = {}
4142 if have_system
4143   summary_info += {'KVM support':       config_all.has_key('CONFIG_KVM')}
4144   summary_info += {'HAX support':       config_all.has_key('CONFIG_HAX')}
4145   summary_info += {'HVF support':       config_all.has_key('CONFIG_HVF')}
4146   summary_info += {'WHPX support':      config_all.has_key('CONFIG_WHPX')}
4147   summary_info += {'NVMM support':      config_all.has_key('CONFIG_NVMM')}
4148   summary_info += {'Xen support':       xen.found()}
4149   if xen.found()
4150     summary_info += {'xen ctrl version':  xen.version()}
4151   endif
4152   summary_info += {'Xen emulation':     config_all.has_key('CONFIG_XEN_EMU')}
4153 endif
4154 summary_info += {'TCG support':       config_all.has_key('CONFIG_TCG')}
4155 if config_all.has_key('CONFIG_TCG')
4156   if get_option('tcg_interpreter')
4157     summary_info += {'TCG backend':   'TCI (TCG with bytecode interpreter, slow)'}
4158   else
4159     summary_info += {'TCG backend':   'native (@0@)'.format(cpu)}
4160   endif
4161   summary_info += {'TCG plugins':       get_option('plugins')}
4162   summary_info += {'TCG debug enabled': get_option('debug_tcg')}
4163 endif
4164 summary_info += {'target list':       ' '.join(target_dirs)}
4165 if have_system
4166   summary_info += {'default devices':   get_option('default_devices')}
4167   summary_info += {'out of process emulation': multiprocess_allowed}
4168   summary_info += {'vfio-user server': vfio_user_server_allowed}
4169 endif
4170 summary(summary_info, bool_yn: true, section: 'Targets and accelerators')
4171
4172 # Block layer
4173 summary_info = {}
4174 summary_info += {'coroutine backend': coroutine_backend}
4175 summary_info += {'coroutine pool':    have_coroutine_pool}
4176 if have_block
4177   summary_info += {'Block whitelist (rw)': get_option('block_drv_rw_whitelist')}
4178   summary_info += {'Block whitelist (ro)': get_option('block_drv_ro_whitelist')}
4179   summary_info += {'Use block whitelist in tools': get_option('block_drv_whitelist_in_tools')}
4180   summary_info += {'VirtFS (9P) support':    have_virtfs}
4181   summary_info += {'VirtFS (9P) Proxy Helper support (deprecated)': have_virtfs_proxy_helper}
4182   summary_info += {'Live block migration': config_host_data.get('CONFIG_LIVE_BLOCK_MIGRATION')}
4183   summary_info += {'replication support': config_host_data.get('CONFIG_REPLICATION')}
4184   summary_info += {'bochs support':     get_option('bochs').allowed()}
4185   summary_info += {'cloop support':     get_option('cloop').allowed()}
4186   summary_info += {'dmg support':       get_option('dmg').allowed()}
4187   summary_info += {'qcow v1 support':   get_option('qcow1').allowed()}
4188   summary_info += {'vdi support':       get_option('vdi').allowed()}
4189   summary_info += {'vhdx support':      get_option('vhdx').allowed()}
4190   summary_info += {'vmdk support':      get_option('vmdk').allowed()}
4191   summary_info += {'vpc support':       get_option('vpc').allowed()}
4192   summary_info += {'vvfat support':     get_option('vvfat').allowed()}
4193   summary_info += {'qed support':       get_option('qed').allowed()}
4194   summary_info += {'parallels support': get_option('parallels').allowed()}
4195   summary_info += {'FUSE exports':      fuse}
4196   summary_info += {'VDUSE block exports': have_vduse_blk_export}
4197 endif
4198 summary(summary_info, bool_yn: true, section: 'Block layer support')
4199
4200 # Crypto
4201 summary_info = {}
4202 summary_info += {'TLS priority':      get_option('tls_priority')}
4203 summary_info += {'GNUTLS support':    gnutls}
4204 if gnutls.found()
4205   summary_info += {'  GNUTLS crypto':   gnutls_crypto.found()}
4206 endif
4207 summary_info += {'libgcrypt':         gcrypt}
4208 summary_info += {'nettle':            nettle}
4209 if nettle.found()
4210    summary_info += {'  XTS':             xts != 'private'}
4211 endif
4212 summary_info += {'AF_ALG support':    have_afalg}
4213 summary_info += {'rng-none':          get_option('rng_none')}
4214 summary_info += {'Linux keyring':     have_keyring}
4215 summary(summary_info, bool_yn: true, section: 'Crypto')
4216
4217 # UI
4218 summary_info = {}
4219 if targetos == 'darwin'
4220   summary_info += {'Cocoa support':           cocoa}
4221 endif
4222 summary_info += {'SDL support':       sdl}
4223 summary_info += {'SDL image support': sdl_image}
4224 summary_info += {'GTK support':       gtk}
4225 summary_info += {'pixman':            pixman}
4226 summary_info += {'VTE support':       vte}
4227 summary_info += {'PNG support':       png}
4228 summary_info += {'VNC support':       vnc}
4229 if vnc.found()
4230   summary_info += {'VNC SASL support':  sasl}
4231   summary_info += {'VNC JPEG support':  jpeg}
4232 endif
4233 summary_info += {'spice protocol support': spice_protocol}
4234 if spice_protocol.found()
4235   summary_info += {'  spice server support': spice}
4236 endif
4237 summary_info += {'curses support':    curses}
4238 summary_info += {'brlapi support':    brlapi}
4239 summary(summary_info, bool_yn: true, section: 'User interface')
4240
4241 # Audio backends
4242 summary_info = {}
4243 if targetos not in ['darwin', 'haiku', 'windows']
4244   summary_info += {'OSS support':     oss}
4245   summary_info += {'sndio support':   sndio}
4246 elif targetos == 'darwin'
4247   summary_info += {'CoreAudio support': coreaudio}
4248 elif targetos == 'windows'
4249   summary_info += {'DirectSound support': dsound}
4250 endif
4251 if targetos == 'linux'
4252   summary_info += {'ALSA support':    alsa}
4253   summary_info += {'PulseAudio support': pulse}
4254 endif
4255 summary_info += {'PipeWire support':  pipewire}
4256 summary_info += {'JACK support':      jack}
4257 summary(summary_info, bool_yn: true, section: 'Audio backends')
4258
4259 # Network backends
4260 summary_info = {}
4261 if targetos == 'darwin'
4262   summary_info += {'vmnet.framework support': vmnet}
4263 endif
4264 summary_info += {'slirp support':     slirp}
4265 summary_info += {'vde support':       vde}
4266 summary_info += {'netmap support':    have_netmap}
4267 summary_info += {'l2tpv3 support':    have_l2tpv3}
4268 summary(summary_info, bool_yn: true, section: 'Network backends')
4269
4270 # Libraries
4271 summary_info = {}
4272 summary_info += {'libtasn1':          tasn1}
4273 summary_info += {'PAM':               pam}
4274 summary_info += {'iconv support':     iconv}
4275 summary_info += {'virgl support':     virgl}
4276 summary_info += {'blkio support':     blkio}
4277 summary_info += {'curl support':      curl}
4278 summary_info += {'Multipath support': mpathpersist}
4279 summary_info += {'Linux AIO support': libaio}
4280 summary_info += {'Linux io_uring support': linux_io_uring}
4281 summary_info += {'ATTR/XATTR support': libattr}
4282 summary_info += {'RDMA support':      rdma}
4283 summary_info += {'PVRDMA support':    have_pvrdma}
4284 summary_info += {'fdt support':       fdt_opt == 'disabled' ? false : fdt_opt}
4285 summary_info += {'libcap-ng support': libcap_ng}
4286 summary_info += {'bpf support':       libbpf}
4287 summary_info += {'rbd support':       rbd}
4288 summary_info += {'smartcard support': cacard}
4289 summary_info += {'U2F support':       u2f}
4290 summary_info += {'libusb':            libusb}
4291 summary_info += {'usb net redir':     usbredir}
4292 summary_info += {'OpenGL support (epoxy)': opengl}
4293 summary_info += {'GBM':               gbm}
4294 summary_info += {'libiscsi support':  libiscsi}
4295 summary_info += {'libnfs support':    libnfs}
4296 if targetos == 'windows'
4297   if have_ga
4298     summary_info += {'QGA VSS support':   have_qga_vss}
4299   endif
4300 endif
4301 summary_info += {'seccomp support':   seccomp}
4302 summary_info += {'GlusterFS support': glusterfs}
4303 summary_info += {'TPM support':       have_tpm}
4304 summary_info += {'libssh support':    libssh}
4305 summary_info += {'lzo support':       lzo}
4306 summary_info += {'snappy support':    snappy}
4307 summary_info += {'bzip2 support':     libbzip2}
4308 summary_info += {'lzfse support':     liblzfse}
4309 summary_info += {'zstd support':      zstd}
4310 summary_info += {'NUMA host support': numa}
4311 summary_info += {'capstone':          capstone}
4312 summary_info += {'libpmem support':   libpmem}
4313 summary_info += {'libdaxctl support': libdaxctl}
4314 summary_info += {'libudev':           libudev}
4315 # Dummy dependency, keep .found()
4316 summary_info += {'FUSE lseek':        fuse_lseek.found()}
4317 summary_info += {'selinux':           selinux}
4318 summary_info += {'libdw':             libdw}
4319 summary(summary_info, bool_yn: true, section: 'Dependencies')
4320
4321 if host_arch == 'unknown'
4322   message()
4323   warning('UNSUPPORTED HOST CPU')
4324   message()
4325   message('Support for CPU host architecture ' + cpu + ' is not currently')
4326   message('maintained. The QEMU project does not guarantee that QEMU will')
4327   message('compile or work on this host CPU. You can help by volunteering')
4328   message('to maintain it and providing a build host for our continuous')
4329   message('integration setup.')
4330   if get_option('tcg').allowed() and target_dirs.length() > 0
4331     message()
4332     message('configure has succeeded and you can continue to build, but')
4333     message('QEMU will use a slow interpreter to emulate the target CPU.')
4334   endif
4335 endif
4336
4337 if not supported_oses.contains(targetos)
4338   message()
4339   warning('UNSUPPORTED HOST OS')
4340   message()
4341   message('Support for host OS ' + targetos + 'is not currently maintained.')
4342   message('configure has succeeded and you can continue to build, but')
4343   message('the QEMU project does not guarantee that QEMU will compile or')
4344   message('work on this operating system. You can help by volunteering')
4345   message('to maintain it and providing a build host for our continuous')
4346   message('integration setup. This will ensure that future versions of QEMU')
4347   message('will keep working on ' + targetos + '.')
4348 endif
4349
4350 if host_arch == 'unknown' or not supported_oses.contains(targetos)
4351   message()
4352   message('If you want to help supporting QEMU on this platform, please')
4353   message('contact the developers at qemu-devel@nongnu.org.')
4354 endif