buildtools/wafsamba/wscript

   1 #!/usr/bin/env python
   2
   3 # this is a base set of waf rules that everything else pulls in first
   4
   5 import os, sys
   6 from waflib import Configure, Logs, Options, Utils, Context, Errors
   7 import wafsamba
   8 from samba_utils import symlink
   9 from optparse import SUPPRESS_HELP
  10
  11 # this forces configure to be re-run if any of the configure
  12 # sections of the build scripts change. We have to check
  13 # for this in sys.argv as options have not yet been parsed when
  14 # we need to set this. This is off by default until some issues
  15 # are resolved related to WAFCACHE. It will need a lot of testing
  16 # before it is enabled by default.
  17 if '--enable-auto-reconfigure' in sys.argv:
  18     Configure.autoconfig = 'clobber'
  19
  20 def default_value(option, default=''):
  21     if option in Options.options.__dict__:
  22         return Options.options.__dict__[option]
  23     return default
  24
  25 def options(opt):
  26     opt.load('compiler_cc')
  27
  28     opt.load('gnu_dirs')
  29
  30     gr = opt.option_group('library handling options')
  31
  32     gr.add_option('--bundled-libraries',
  33                    help=("comma separated list of bundled libraries. May include !LIBNAME to disable bundling a library. Can be 'NONE' or 'ALL' [auto]"),
  34                    action="store", dest='BUNDLED_LIBS', default='')
  35
  36     gr.add_option('--private-libraries',
  37                    help=("comma separated list of normally public libraries to build instead as private libraries. May include !LIBNAME to disable making a library private. Can be 'NONE' or 'ALL' [auto]"),
  38                    action="store", dest='PRIVATE_LIBS', default='')
  39
  40     extension_default = default_value('PRIVATE_EXTENSION_DEFAULT')
  41     gr.add_option('--private-library-extension',
  42                    help=("name extension for private libraries [%s]" % extension_default),
  43                    action="store", dest='PRIVATE_EXTENSION', default=extension_default)
  44
  45     extension_exception = default_value('PRIVATE_EXTENSION_EXCEPTION')
  46     gr.add_option('--private-extension-exception',
  47                    help=("comma separated list of libraries to not apply extension to [%s]" % extension_exception),
  48                    action="store", dest='PRIVATE_EXTENSION_EXCEPTION', default=extension_exception)
  49
  50     builtin_default = default_value('BUILTIN_LIBRARIES_DEFAULT')
  51     gr.add_option('--builtin-libraries',
  52                    help=("command separated list of libraries to build directly into binaries [%s]" % builtin_default),
  53                    action="store", dest='BUILTIN_LIBRARIES', default=builtin_default)
  54
  55     gr.add_option('--minimum-library-version',
  56                    help=("list of minimum system library versions (LIBNAME1:version,LIBNAME2:version)"),
  57                    action="store", dest='MINIMUM_LIBRARY_VERSION', default='')
  58
  59     gr.add_option('--disable-rpath',
  60                    help=("Disable use of rpath for build binaries"),
  61                    action="store_true", dest='disable_rpath_build', default=False)
  62     gr.add_option('--disable-rpath-install',
  63                    help=("Disable use of rpath for library path in installed files"),
  64                    action="store_true", dest='disable_rpath_install', default=False)
  65     gr.add_option('--disable-rpath-private-install',
  66                    help=("Disable use of rpath for private library path in installed files"),
  67                    action="store_true", dest='disable_rpath_private_install', default=False)
  68     gr.add_option('--nonshared-binary',
  69                    help=("Disable use of shared libs for the listed binaries"),
  70                    action="store", dest='NONSHARED_BINARIES', default='')
  71     gr.add_option('--disable-symbol-versions',
  72                    help=("Disable use of the --version-script linker option"),
  73                    action="store_true", dest='disable_symbol_versions', default=False)
  74
  75     opt.add_option('--with-modulesdir',
  76                    help=("modules directory [PREFIX/modules]"),
  77                    action="store", dest='MODULESDIR', default='${PREFIX}/modules')
  78
  79     opt.add_option('--with-privatelibdir',
  80                    help=("private library directory [PREFIX/lib/%s]" % Context.g_module.APPNAME),
  81                    action="store", dest='PRIVATELIBDIR', default=None)
  82
  83     opt.add_option('--with-libiconv',
  84                    help='additional directory to search for libiconv',
  85                    action='store', dest='iconv_open', default='/usr/local',
  86                    match = ['Checking for library iconv', 'Checking for iconv_open', 'Checking for header iconv.h'])
  87     opt.add_option('--without-gettext',
  88                    help=("Disable use of gettext"),
  89                    action="store_true", dest='disable_gettext', default=False)
  90
  91     gr = opt.option_group('developer options')
  92
  93     gr.add_option('-C',
  94                    help='enable configure caching',
  95                    action='store_true', dest='enable_configure_cache')
  96     gr.add_option('--enable-auto-reconfigure',
  97                    help='enable automatic reconfigure on build',
  98                    action='store_true', dest='enable_auto_reconfigure')
  99     gr.add_option('--enable-debug',
 100                    help=("Turn on debugging symbols"),
 101                    action="store_true", dest='debug', default=False)
 102     gr.add_option('--enable-developer',
 103                    help=("Turn on developer warnings and debugging"),
 104                    action="store_true", dest='developer', default=False)
 105     gr.add_option('--pidl-developer',
 106                    help=("annotate PIDL-generated code for developers"),
 107                    action="store_true", dest='pidl_developer', default=False)
 108     gr.add_option('--disable-warnings-as-errors',
 109                    help=("Do not treat all warnings as errors (disable -Werror)"),
 110                    action="store_true", dest='disable_warnings_as_errors', default=False)
 111     opt.add_option('--enable-coverage',
 112                    help=("enable options necessary for code coverage "
 113                          "reporting on selftest (default=no)"),
 114                    action="store_true", dest='enable_coverage', default=False)
 115     gr.add_option('--fatal-errors',
 116                    help=("Stop compilation on first error (enable -Wfatal-errors)"),
 117                    action="store_true", dest='fatal_errors', default=False)
 118     gr.add_option('--enable-gccdeps',
 119                    help=("Enable use of gcc -MD dependency module"),
 120                    action="store_true", dest='enable_gccdeps', default=True)
 121     gr.add_option('--pedantic',
 122                    help=("Enable even more compiler warnings"),
 123                    action='store_true', dest='pedantic', default=False)
 124     gr.add_option('--git-local-changes',
 125                    help=("mark version with + if local git changes"),
 126                    action='store_true', dest='GIT_LOCAL_CHANGES', default=False)
 127     gr.add_option('--address-sanitizer',
 128                    help=("Enable address sanitizer compile and linker flags"),
 129                    action="store_true", dest='address_sanitizer', default=False)
 130     gr.add_option('--undefined-sanitizer',
 131         help=("Enable undefined behaviour sanitizer compile and linker flags"),
 132         action="store_true",
 133         dest='undefined_sanitizer',
 134         default=False)
 135     gr.add_option('--enable-libfuzzer',
 136                   help=("Build fuzzing binaries (use ADDITIONAL_CFLAGS to specify compiler options for libFuzzer or use CC=honggfuzz/hfuzz-cc)"),
 137                   action="store_true", dest='enable_libfuzzer', default=False)
 138     gr.add_option('--enable-afl-fuzzer',
 139                   help=("Build fuzzing binaries AFL-style (typically use with CC=afl-gcc)"),
 140                   action="store_true", dest='enable_afl_fuzzer', default=False)
 141
 142     # Fuzz targets may need additional LDFLAGS that we can't use on
 143     # internal binaries like asn1_compile
 144
 145     gr.add_option('--fuzz-target-ldflags',
 146                   help=("Linker flags to be used when building fuzz targets"),
 147                   action="store", dest='FUZZ_TARGET_LDFLAGS', default='')
 148
 149     gr.add_option('--abi-check',
 150                    help=("Check ABI signatures for libraries"),
 151                    action='store_true', dest='ABI_CHECK', default=False)
 152     gr.add_option('--abi-check-disable',
 153                    help=("Disable ABI checking (used with --enable-developer)"),
 154                    action='store_true', dest='ABI_CHECK_DISABLE', default=False)
 155     gr.add_option('--abi-update',
 156                    help=("Update ABI signature files for libraries"),
 157                    action='store_true', dest='ABI_UPDATE', default=False)
 158
 159     gr.add_option('--show-deps',
 160                    help=("Show dependency tree for the given target"),
 161                    dest='SHOWDEPS', default='')
 162
 163     gr.add_option('--symbol-check',
 164                   help=("check symbols in object files against project rules"),
 165                   action='store_true', dest='SYMBOLCHECK', default=False)
 166
 167     gr.add_option('--dup-symbol-check',
 168                   help=("check for duplicate symbols in object files and system libs (must be configured with --enable-developer)"),
 169                   action='store_true', dest='DUP_SYMBOLCHECK', default=False)
 170
 171     gr.add_option('--why-needed',
 172                   help=("TARGET:DEPENDENCY check why TARGET needs DEPENDENCY"),
 173                   action='store', type='str', dest='WHYNEEDED', default=None)
 174
 175     gr.add_option('--show-duplicates',
 176                   help=("Show objects which are included in multiple binaries or libraries"),
 177                   action='store_true', dest='SHOW_DUPLICATES', default=False)
 178
 179     gr = opt.add_option_group('cross compilation options')
 180
 181     gr.add_option('--cross-compile',
 182                    help=("configure for cross-compilation"),
 183                    action='store_true', dest='CROSS_COMPILE', default=False)
 184     gr.add_option('--cross-execute',
 185                    help=("command prefix to use for cross-execution in configure"),
 186                    action='store', dest='CROSS_EXECUTE', default='')
 187     gr.add_option('--cross-answers',
 188                    help=("answers to cross-compilation configuration (auto modified)"),
 189                    action='store', dest='CROSS_ANSWERS', default='')
 190     gr.add_option('--hostcc',
 191                    help=("set host compiler when cross compiling"),
 192                    action='store', dest='HOSTCC', default=False)
 193
 194     # we use SUPPRESS_HELP for these, as they are ignored, and are there only
 195     # to allow existing RPM spec files to work
 196     opt.add_option('--build',
 197                    help=SUPPRESS_HELP,
 198                    action='store', dest='AUTOCONF_BUILD', default='')
 199     opt.add_option('--host',
 200                    help=SUPPRESS_HELP,
 201                    action='store', dest='AUTOCONF_HOST', default='')
 202     opt.add_option('--target',
 203                    help=SUPPRESS_HELP,
 204                    action='store', dest='AUTOCONF_TARGET', default='')
 205     opt.add_option('--program-prefix',
 206                    help=SUPPRESS_HELP,
 207                    action='store', dest='AUTOCONF_PROGRAM_PREFIX', default='')
 208     opt.add_option('--disable-dependency-tracking',
 209                    help=SUPPRESS_HELP,
 210                    action='store_true', dest='AUTOCONF_DISABLE_DEPENDENCY_TRACKING', default=False)
 211     opt.add_option('--disable-silent-rules',
 212                    help=SUPPRESS_HELP,
 213                    action='store_true', dest='AUTOCONF_DISABLE_SILENT_RULES', default=False)
 214
 215     gr = opt.option_group('dist options')
 216     gr.add_option('--sign-release',
 217                    help='sign the release tarball created by waf dist',
 218                    action='store_true', dest='SIGN_RELEASE')
 219     gr.add_option('--tag',
 220                    help='tag release in git at the same time',
 221                    type='string', action='store', dest='TAG_RELEASE')
 222
 223     opt.add_option('--disable-python',
 224                     help='do not generate python modules',
 225                     action='store_true', dest='disable_python', default=False)
 226
 227
 228 @Utils.run_once
 229 def configure(conf):
 230     conf.env.hlist = []
 231     conf.env.srcdir = conf.srcnode.abspath()
 232
 233     conf.define('SRCDIR', conf.env['srcdir'])
 234
 235     conf.SETUP_CONFIGURE_CACHE(Options.options.enable_configure_cache)
 236
 237     # load our local waf extensions
 238     conf.load('gnu_dirs')
 239     conf.load('wafsamba')
 240
 241     conf.CHECK_CC_ENV()
 242
 243     conf.load('compiler_c')
 244
 245     conf.CHECK_STANDARD_LIBPATH()
 246
 247     # we need git for 'waf dist'
 248     conf.find_program('git', var='GIT')
 249
 250     # older gcc versions (< 4.4) does not work with gccdeps, so we have to see if the .d file is generated
 251     if Options.options.enable_gccdeps:
 252         # stale file removal - the configuration may pick up the old .pyc file
 253         p = os.path.join(conf.env.srcdir, 'buildtools/wafsamba/gccdeps.pyc')
 254         if os.path.exists(p):
 255             os.remove(p)
 256         conf.load('gccdeps')
 257
 258     # make the install paths available in environment
 259     conf.env.LIBDIR = Options.options.LIBDIR or '${PREFIX}/lib'
 260     conf.env.BINDIR = Options.options.BINDIR or '${PREFIX}/bin'
 261     conf.env.SBINDIR = Options.options.SBINDIR or '${PREFIX}/sbin'
 262     conf.env.MODULESDIR = Options.options.MODULESDIR
 263     conf.env.PRIVATELIBDIR = Options.options.PRIVATELIBDIR
 264     conf.env.BUNDLED_LIBS = Options.options.BUNDLED_LIBS.split(',')
 265     conf.env.SYSTEM_LIBS = ()
 266     conf.env.PRIVATE_LIBS = Options.options.PRIVATE_LIBS.split(',')
 267     conf.env.BUILTIN_LIBRARIES = Options.options.BUILTIN_LIBRARIES.split(',')
 268     conf.env.NONSHARED_BINARIES = Options.options.NONSHARED_BINARIES.split(',')
 269
 270     conf.env.PRIVATE_EXTENSION = Options.options.PRIVATE_EXTENSION
 271     conf.env.PRIVATE_EXTENSION_EXCEPTION = Options.options.PRIVATE_EXTENSION_EXCEPTION.split(',')
 272
 273     conf.env.CROSS_COMPILE = Options.options.CROSS_COMPILE
 274     conf.env.CROSS_EXECUTE = Options.options.CROSS_EXECUTE
 275     conf.env.CROSS_ANSWERS = Options.options.CROSS_ANSWERS
 276     conf.env.HOSTCC        = Options.options.HOSTCC
 277
 278     conf.env.AUTOCONF_BUILD = Options.options.AUTOCONF_BUILD
 279     conf.env.AUTOCONF_HOST  = Options.options.AUTOCONF_HOST
 280     conf.env.AUTOCONF_PROGRAM_PREFIX = Options.options.AUTOCONF_PROGRAM_PREFIX
 281
 282     conf.env.disable_python = Options.options.disable_python
 283
 284     if (conf.env.AUTOCONF_HOST and
 285         conf.env.AUTOCONF_BUILD and
 286         conf.env.AUTOCONF_BUILD != conf.env.AUTOCONF_HOST):
 287         Logs.error('ERROR: Mismatch between --build and --host. Please use --cross-compile instead')
 288         sys.exit(1)
 289     if conf.env.AUTOCONF_PROGRAM_PREFIX:
 290         Logs.error('ERROR: --program-prefix not supported')
 291         sys.exit(1)
 292
 293     # enable ABI checking for developers
 294     conf.env.ABI_CHECK = Options.options.ABI_CHECK or Options.options.developer
 295     if Options.options.ABI_CHECK_DISABLE:
 296         conf.env.ABI_CHECK = False
 297     try:
 298         conf.find_program('gdb', mandatory=True)
 299     except:
 300         conf.env.ABI_CHECK = False
 301
 302     conf.env.enable_coverage = Options.options.enable_coverage
 303     if conf.env.enable_coverage:
 304         conf.ADD_LDFLAGS('-lgcov', testflags=True)
 305         conf.ADD_CFLAGS('--coverage', testflags=True)
 306         # disable abi check for coverage, otherwise ld will fail
 307         conf.env.ABI_CHECK = False
 308
 309     conf.env.GIT_LOCAL_CHANGES = Options.options.GIT_LOCAL_CHANGES
 310
 311     conf.CHECK_UNAME()
 312
 313     # see if we can compile and run a simple C program
 314     conf.CHECK_CODE('printf("hello world")',
 315                     define='HAVE_SIMPLE_C_PROG',
 316                     mandatory=True,
 317                     execute=True,
 318                     headers='stdio.h',
 319                     msg='Checking simple C program')
 320
 321     # Try to find the right extra flags for -Werror behaviour
 322     for f in ["-Werror",       # GCC
 323               "-errwarn=%all", # Sun Studio
 324               "-qhalt=w",     # IBM xlc
 325               "-w2",           # Tru64
 326              ]:
 327         if conf.CHECK_CFLAGS([f]):
 328             if not 'WERROR_CFLAGS' in conf.env:
 329                 conf.env['WERROR_CFLAGS'] = []
 330             conf.env['WERROR_CFLAGS'].extend([f])
 331             break
 332
 333     # check which compiler/linker flags are needed for rpath support
 334     if conf.CHECK_LDFLAGS(['-Wl,-rpath,.']):
 335         conf.env['RPATH_ST'] = '-Wl,-rpath,%s'
 336     elif conf.CHECK_LDFLAGS(['-Wl,-R,.']):
 337         conf.env['RPATH_ST'] = '-Wl,-R,%s'
 338
 339     # check for rpath
 340     if conf.CHECK_LIBRARY_SUPPORT(rpath=True):
 341         support_rpath = True
 342         conf.env.RPATH_ON_BUILD   = not Options.options.disable_rpath_build
 343         conf.env.RPATH_ON_INSTALL = (conf.env.RPATH_ON_BUILD and
 344                                      not Options.options.disable_rpath_install)
 345         if not conf.env.PRIVATELIBDIR:
 346             conf.env.PRIVATELIBDIR = '%s/%s' % (conf.env.LIBDIR, Context.g_module.APPNAME)
 347         conf.env.RPATH_ON_INSTALL_PRIVATE = (
 348             not Options.options.disable_rpath_private_install)
 349     else:
 350         support_rpath = False
 351         conf.env.RPATH_ON_INSTALL = False
 352         conf.env.RPATH_ON_BUILD   = False
 353         conf.env.RPATH_ON_INSTALL_PRIVATE = False
 354         if not conf.env.PRIVATELIBDIR:
 355             # rpath is not possible so there is no sense in having a
 356             # private library directory by default.
 357             # the user can of course always override it.
 358             conf.env.PRIVATELIBDIR = conf.env.LIBDIR
 359
 360     if (not Options.options.disable_symbol_versions and
 361         conf.CHECK_LIBRARY_SUPPORT(rpath=support_rpath,
 362                                    version_script=True,
 363                                    msg='-Wl,--version-script support')):
 364         conf.env.HAVE_LD_VERSION_SCRIPT = True
 365     else:
 366         conf.env.HAVE_LD_VERSION_SCRIPT = False
 367
 368     if conf.CHECK_CFLAGS(['-fvisibility=hidden']):
 369         conf.env.VISIBILITY_CFLAGS = '-fvisibility=hidden'
 370         conf.CHECK_CODE('''int main(void) { return 0; }
 371                            __attribute__((visibility("default"))) void vis_foo2(void) {}\n''',
 372                         cflags=conf.env.VISIBILITY_CFLAGS,
 373                         strict=True,
 374                         define='HAVE_VISIBILITY_ATTR', addmain=False)
 375
 376     # check HAVE_CONSTRUCTOR_ATTRIBUTE
 377     conf.CHECK_CODE('''
 378             void test_constructor_attribute(void) __attribute__ ((constructor));
 379
 380             void test_constructor_attribute(void)
 381             {
 382                 return;
 383             }
 384
 385             int main(void) {
 386                 return 0;
 387             }
 388             ''',
 389             'HAVE_CONSTRUCTOR_ATTRIBUTE',
 390             addmain=False,
 391             strict=True,
 392             msg='Checking for library constructor support')
 393
 394     # check HAVE_PRAGMA_INIT alternatively
 395     if not conf.env.HAVE_CONSTRUCTOR_ATTRIBUTE:
 396             conf.CHECK_CODE('''
 397                 #pragma init (test_init)
 398
 399                 void test_init(void)
 400                 {
 401                     return;
 402                 }
 403
 404                 int main(void) {
 405                     return 0;
 406                 }
 407                 ''',
 408                 'HAVE_PRAGMA_INIT',
 409                 addmain=False,
 410                 strict=True,
 411                 msg='Checking for pragma init support')
 412
 413     # check HAVE_DESTRUCTOR_ATTRIBUTE
 414     conf.CHECK_CODE('''
 415             void test_destructor_attribute(void) __attribute__ ((destructor));
 416
 417             void test_destructor_attribute(void)
 418             {
 419                 return;
 420             }
 421
 422             int main(void) {
 423                 return 0;
 424             }
 425             ''',
 426             'HAVE_DESTRUCTOR_ATTRIBUTE',
 427             addmain=False,
 428             strict=True,
 429             msg='Checking for library destructor support')
 430
 431     # check HAVE_PRAGMA_FINI alternatively
 432     if not conf.env.HAVE_DESTRUCTOR_ATTRIBUTE:
 433             conf.CHECK_CODE('''
 434                 #pragma fini (test_fini)
 435
 436                 void test_fini(void)
 437                 {
 438                     return;
 439                 }
 440
 441                 int main(void) {
 442                     return 0;
 443                 }
 444                 ''',
 445                 'HAVE_PRAGMA_FINI',
 446                 addmain=False,
 447                 strict=True,
 448                 msg='Checking for pragma fini support')
 449
 450     conf.CHECK_CODE('''
 451             void test_attribute(void) __attribute__ (());
 452
 453             void test_attribute(void)
 454             {
 455                 return;
 456             }
 457
 458             int main(void) {
 459                 return 0;
 460             }
 461             ''',
 462             'HAVE___ATTRIBUTE__',
 463             addmain=False,
 464             strict=True,
 465             msg='Checking for __attribute__')
 466
 467     # Solaris by defauls uses draft versions of some functions unless you set _POSIX_PTHREAD_SEMANTICS
 468     if sys.platform.startswith('sunos'):
 469         conf.DEFINE('_POSIX_PTHREAD_SEMANTICS', 1)
 470
 471     if sys.platform.startswith('aix'):
 472         conf.DEFINE('_ALL_SOURCE', 1, add_to_cflags=True)
 473         # Might not be needed if ALL_SOURCE is defined
 474         # conf.DEFINE('_XOPEN_SOURCE', 600, add_to_cflags=True)
 475
 476     # we should use the PIC options in waf instead
 477     # Some compilo didn't support -fPIC but just print a warning
 478     if conf.env['COMPILER_CC'] == "suncc":
 479         conf.ADD_CFLAGS('-KPIC', testflags=True)
 480         # we really want define here as we need to have this
 481         # define even during the tests otherwise detection of
 482         # boolean is broken
 483         conf.DEFINE('_STDC_C99', 1, add_to_cflags=True)
 484         conf.DEFINE('_XPG6', 1, add_to_cflags=True)
 485     else:
 486         conf.ADD_CFLAGS('-fPIC', testflags=True)
 487
 488     # On Solaris 8 with suncc (at least) the flags for the linker to define the name of the
 489     # library are not always working (if the command line is very very long and with a lot
 490     # files)
 491
 492     if conf.env['COMPILER_CC'] == "suncc":
 493         save = conf.env['SONAME_ST']
 494         conf.env['SONAME_ST'] = '-Wl,-h,%s'
 495         if not conf.CHECK_SHLIB_INTRASINC_NAME_FLAGS("Checking if flags %s are ok" % conf.env['SONAME_ST']):
 496             conf.env['SONAME_ST'] = save
 497
 498     conf.CHECK_INLINE()
 499
 500     # check for pkgconfig
 501     conf.CHECK_CFG(atleast_pkgconfig_version='0.0.0')
 502
 503     conf.DEFINE('_GNU_SOURCE', 1, add_to_cflags=True)
 504     conf.DEFINE('_XOPEN_SOURCE_EXTENDED', 1, add_to_cflags=True)
 505
 506     #
 507     # Needs to be defined before std*.h and string*.h are included
 508     # As Python.h already brings string.h we need it in CFLAGS.
 509     # See memset_s() details here:
 510     # https://en.cppreference.com/w/c/string/byte/memset
 511     #
 512     if conf.CHECK_CFLAGS(['-D__STDC_WANT_LIB_EXT1__=1']):
 513         conf.ADD_CFLAGS('-D__STDC_WANT_LIB_EXT1__=1')
 514
 515     # on Tru64 certain features are only available with _OSF_SOURCE set to 1
 516     # and _XOPEN_SOURCE set to 600
 517     if conf.env['SYSTEM_UNAME_SYSNAME'] == 'OSF1':
 518         conf.DEFINE('_OSF_SOURCE', 1, add_to_cflags=True)
 519         conf.DEFINE('_XOPEN_SOURCE', 600, add_to_cflags=True)
 520
 521     # SCM_RIGHTS is only avail if _XOPEN_SOURCE iѕ defined on IRIX
 522     if conf.env['SYSTEM_UNAME_SYSNAME'] == 'IRIX':
 523         conf.DEFINE('_XOPEN_SOURCE', 600, add_to_cflags=True)
 524         conf.DEFINE('_BSD_TYPES', 1, add_to_cflags=True)
 525
 526     # Try to find the right extra flags for C99 initialisers
 527     for f in ["", "-AC99", "-qlanglvl=extc99", "-qlanglvl=stdc99", "-c99"]:
 528         if conf.CHECK_CFLAGS([f], '''
 529 struct foo {int x;char y;};
 530 struct foo bar = { .y = 'X', .x = 1 };
 531 '''):
 532             if f != "":
 533                 conf.ADD_CFLAGS(f)
 534             break
 535
 536     # get the base headers we'll use for the rest of the tests
 537     conf.CHECK_HEADERS('stdio.h sys/types.h sys/stat.h stdlib.h stddef.h memory.h string.h',
 538                        add_headers=True)
 539     conf.CHECK_HEADERS('strings.h inttypes.h stdint.h unistd.h minix/config.h', add_headers=True)
 540     conf.CHECK_HEADERS('ctype.h', add_headers=True)
 541
 542     if sys.platform == 'darwin':
 543         conf.DEFINE('_DARWIN_C_SOURCE', 1, add_to_cflags=True)
 544         conf.DEFINE('_DARWIN_UNLIMITED_GETGROUPS', 1, add_to_cflags=True)
 545     else:
 546         conf.CHECK_HEADERS('standards.h', add_headers=True)
 547
 548     conf.CHECK_HEADERS('stdbool.h stdint.h stdarg.h vararg.h', add_headers=True)
 549     conf.CHECK_HEADERS('limits.h assert.h')
 550
 551     # see if we need special largefile flags
 552     if not conf.CHECK_LARGEFILE():
 553         raise Errors.WafError('Samba requires large file support support, but not available on this platform: sizeof(off_t) < 8')
 554
 555     if conf.env.HAVE_STDDEF_H and conf.env.HAVE_STDLIB_H:
 556         conf.DEFINE('STDC_HEADERS', 1)
 557
 558     conf.CHECK_HEADERS('sys/time.h time.h', together=True)
 559
 560     if conf.env.HAVE_SYS_TIME_H and conf.env.HAVE_TIME_H:
 561         conf.DEFINE('TIME_WITH_SYS_TIME', 1)
 562
 563     # cope with different extensions for libraries
 564     (root, ext) = os.path.splitext(conf.env.cshlib_PATTERN)
 565     if ext[0] == '.':
 566         conf.define('SHLIBEXT', ext[1:], quote=True)
 567     else:
 568         conf.define('SHLIBEXT', "so", quote=True)
 569
 570     # First try a header check for cross-compile friendlyness
 571     conf.CHECK_CODE(code = """#ifdef __BYTE_ORDER
 572                         #define B __BYTE_ORDER
 573                         #elif defined(BYTE_ORDER)
 574                         #define B BYTE_ORDER
 575                         #endif
 576
 577                         #ifdef __LITTLE_ENDIAN
 578                         #define LITTLE __LITTLE_ENDIAN
 579                         #elif defined(LITTLE_ENDIAN)
 580                         #define LITTLE LITTLE_ENDIAN
 581                         #endif
 582
 583                         #if !defined(LITTLE) || !defined(B) || LITTLE != B
 584                         #error Not little endian.
 585                         #endif
 586                         int main(void) { return 0; }\n""",
 587                             addmain=False,
 588                             headers="endian.h sys/endian.h",
 589                             define="HAVE_LITTLE_ENDIAN")
 590     conf.CHECK_CODE(code = """#ifdef __BYTE_ORDER
 591                         #define B __BYTE_ORDER
 592                         #elif defined(BYTE_ORDER)
 593                         #define B BYTE_ORDER
 594                         #endif
 595
 596                         #ifdef __BIG_ENDIAN
 597                         #define BIG __BIG_ENDIAN
 598                         #elif defined(BIG_ENDIAN)
 599                         #define BIG BIG_ENDIAN
 600                         #endif
 601
 602                         #if !defined(BIG) || !defined(B) || BIG != B
 603                         #error Not big endian.
 604                         #endif
 605                         int main(void) { return 0; }\n""",
 606                             addmain=False,
 607                             headers="endian.h sys/endian.h",
 608                             define="HAVE_BIG_ENDIAN")
 609
 610     if not conf.CONFIG_SET("HAVE_BIG_ENDIAN") and not conf.CONFIG_SET("HAVE_LITTLE_ENDIAN"):
 611         # That didn't work!  Do runtime test.
 612         conf.CHECK_CODE("""union { int i; char c[sizeof(int)]; } u;
 613             u.i = 0x01020304;
 614             return u.c[0] == 0x04 && u.c[1] == 0x03 && u.c[2] == 0x02 && u.c[3] == 0x01 ? 0 : 1;""",
 615                           addmain=True, execute=True,
 616                           define='HAVE_LITTLE_ENDIAN',
 617                           msg="Checking for HAVE_LITTLE_ENDIAN - runtime")
 618         conf.CHECK_CODE("""union { int i; char c[sizeof(int)]; } u;
 619             u.i = 0x01020304;
 620             return u.c[0] == 0x01 && u.c[1] == 0x02 && u.c[2] == 0x03 && u.c[3] == 0x04 ? 0 : 1;""",
 621                           addmain=True, execute=True,
 622                           define='HAVE_BIG_ENDIAN',
 623                           msg="Checking for HAVE_BIG_ENDIAN - runtime")
 624
 625     # Extra sanity check.
 626     if conf.CONFIG_SET("HAVE_BIG_ENDIAN") == conf.CONFIG_SET("HAVE_LITTLE_ENDIAN"):
 627         Logs.error("Failed endian determination.  The PDP-11 is back?")
 628         sys.exit(1)
 629     else:
 630         if conf.CONFIG_SET("HAVE_BIG_ENDIAN"):
 631             conf.DEFINE('WORDS_BIGENDIAN', 1)
 632
 633     # check if signal() takes a void function
 634     if conf.CHECK_CODE('return *(signal (0, 0)) (0) == 1',
 635                        define='RETSIGTYPE_INT',
 636                        execute=False,
 637                        headers='signal.h',
 638                        msg='Checking if signal handlers return int'):
 639         conf.DEFINE('RETSIGTYPE', 'int')
 640     else:
 641         conf.DEFINE('RETSIGTYPE', 'void')
 642
 643     conf.CHECK_VARIABLE('__FUNCTION__', define='HAVE_FUNCTION_MACRO')
 644
 645     conf.CHECK_CODE('va_list ap1,ap2; va_copy(ap1,ap2)',
 646                     define="HAVE_VA_COPY",
 647                     msg="Checking for va_copy")
 648
 649     conf.CHECK_CODE('''
 650                     #define eprintf(...) fprintf(stderr, __VA_ARGS__)
 651                     eprintf("bla", "bar")
 652                     ''', define='HAVE__VA_ARGS__MACRO')
 653
 654     conf.env.enable_fuzzing = False
 655
 656     conf.env.enable_libfuzzer = Options.options.enable_libfuzzer
 657     conf.env.enable_afl_fuzzer = Options.options.enable_afl_fuzzer
 658     if conf.env.enable_libfuzzer or conf.env.enable_afl_fuzzer:
 659         conf.env.enable_fuzzing = True
 660         conf.DEFINE('FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION', 1)
 661         conf.env.FUZZ_TARGET_LDFLAGS = Options.options.FUZZ_TARGET_LDFLAGS
 662
 663     # Create a symlink of the compile db for clangd
 664     symlink(os.path.join(conf.bldnode.abspath(), 'default/compile_commands.json'),
 665             os.path.join(conf.srcnode.abspath(), 'compile_commands.json'),
 666             force=True)
 667
 668     conf.SAMBA_BUILD_ENV()
 669
 670
 671 def build(bld):
 672     # give a more useful message if the source directory has moved
 673     curdir = bld.path.abspath()
 674     srcdir = bld.srcnode.abspath()
 675     relpath = os.path.relpath(curdir, srcdir)
 676     if relpath.find('../') != -1:
 677         Logs.error('bld.path %s is not a child of %s' % (curdir, srcdir))
 678         raise Errors.WafError('''The top source directory has moved. Please run distclean and reconfigure''')
 679
 680     bld.SETUP_BUILD_GROUPS()
 681     bld.ENFORCE_GROUP_ORDERING()
 682     bld.CHECK_PROJECT_RULES()