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 import wafsamba, Configure, Logs, Options, Utils
   7 from samba_utils import os_path_relpath
   8 from optparse import SUPPRESS_HELP
   9
  10 # this forces configure to be re-run if any of the configure
  11 # sections of the build scripts change. We have to check
  12 # for this in sys.argv as options have not yet been parsed when
  13 # we need to set this. This is off by default until some issues
  14 # are resolved related to WAFCACHE. It will need a lot of testing
  15 # before it is enabled by default.
  16 if '--enable-auto-reconfigure' in sys.argv:
  17     Configure.autoconfig = True
  18
  19 def set_options(opt):
  20     opt.tool_options('compiler_cc')
  21
  22     opt.tool_options('gnu_dirs')
  23
  24     gr = opt.option_group('library handling options')
  25
  26     gr.add_option('--bundled-libraries',
  27                    help=("comma separated list of bundled libraries. May include !LIBNAME to disable bundling a library. Can be 'NONE' or 'ALL' [auto]"),
  28                    action="store", dest='BUNDLED_LIBS', default='')
  29
  30     gr.add_option('--private-libraries',
  31                    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]"),
  32                    action="store", dest='PRIVATE_LIBS', default='')
  33
  34     extension_default = Options.options['PRIVATE_EXTENSION_DEFAULT']
  35     gr.add_option('--private-library-extension',
  36                    help=("name extension for private libraries [%s]" % extension_default),
  37                    action="store", dest='PRIVATE_EXTENSION', default=extension_default)
  38
  39     extension_exception = Options.options['PRIVATE_EXTENSION_EXCEPTION']
  40     gr.add_option('--private-extension-exception',
  41                    help=("comma separated list of libraries to not apply extension to [%s]" % extension_exception),
  42                    action="store", dest='PRIVATE_EXTENSION_EXCEPTION', default=extension_exception)
  43
  44     builtin_default = Options.options['BUILTIN_LIBRARIES_DEFAULT']
  45     gr.add_option('--builtin-libraries',
  46                    help=("command separated list of libraries to build directly into binaries [%s]" % builtin_default),
  47                    action="store", dest='BUILTIN_LIBRARIES', default=builtin_default)
  48
  49     gr.add_option('--minimum-library-version',
  50                    help=("list of minimum system library versions (LIBNAME1:version,LIBNAME2:version)"),
  51                    action="store", dest='MINIMUM_LIBRARY_VERSION', default='')
  52
  53     gr.add_option('--disable-rpath',
  54                    help=("Disable use of rpath for build binaries"),
  55                    action="store_true", dest='disable_rpath_build', default=False)
  56     gr.add_option('--disable-rpath-install',
  57                    help=("Disable use of rpath for library path in installed files"),
  58                    action="store_true", dest='disable_rpath_install', default=False)
  59     gr.add_option('--disable-rpath-private-install',
  60                    help=("Disable use of rpath for private library path in installed files"),
  61                    action="store_true", dest='disable_rpath_private_install', default=False)
  62     gr.add_option('--nonshared-binary',
  63                    help=("Disable use of shared libs for the listed binaries"),
  64                    action="store", dest='NONSHARED_BINARIES', default='')
  65     gr.add_option('--disable-symbol-versions',
  66                    help=("Disable use of the --version-script linker option"),
  67                    action="store_true", dest='disable_symbol_versions', default=False)
  68
  69     opt.add_option('--with-modulesdir',
  70                    help=("modules directory [PREFIX/modules]"),
  71                    action="store", dest='MODULESDIR', default='${PREFIX}/modules')
  72
  73     opt.add_option('--with-privatelibdir',
  74                    help=("private library directory [PREFIX/lib/%s]" % Utils.g_module.APPNAME),
  75                    action="store", dest='PRIVATELIBDIR', default=None)
  76
  77     opt.add_option('--with-libiconv',
  78                    help='additional directory to search for libiconv',
  79                    action='store', dest='iconv_open', default='/usr/local',
  80                    match = ['Checking for library iconv', 'Checking for iconv_open', 'Checking for header iconv.h'])
  81     opt.add_option('--without-gettext',
  82                    help=("Disable use of gettext"),
  83                    action="store_true", dest='disable_gettext', default=False)
  84
  85     gr = opt.option_group('developer options')
  86
  87     gr.add_option('-C',
  88                    help='enable configure cacheing',
  89                    action='store_true', dest='enable_configure_cache')
  90     gr.add_option('--enable-auto-reconfigure',
  91                    help='enable automatic reconfigure on build',
  92                    action='store_true', dest='enable_auto_reconfigure')
  93     gr.add_option('--enable-debug',
  94                    help=("Turn on debugging symbols"),
  95                    action="store_true", dest='debug', default=False)
  96     gr.add_option('--enable-developer',
  97                    help=("Turn on developer warnings and debugging"),
  98                    action="store_true", dest='developer', default=False)
  99     def picky_developer_callback(option, opt_str, value, parser):
 100         parser.values.developer = True
 101         parser.values.picky_developer = True
 102     gr.add_option('--picky-developer',
 103                    help=("Treat all warnings as errors (enable -Werror)"),
 104                    action="callback", callback=picky_developer_callback,
 105                    dest='picky_developer', default=False)
 106     gr.add_option('--fatal-errors',
 107                    help=("Stop compilation on first error (enable -Wfatal-errors)"),
 108                    action="store_true", dest='fatal_errors', default=False)
 109     gr.add_option('--enable-gccdeps',
 110                    help=("Enable use of gcc -MD dependency module"),
 111                    action="store_true", dest='enable_gccdeps', default=True)
 112     gr.add_option('--timestamp-dependencies',
 113                    help=("use file timestamps instead of content for build dependencies (BROKEN)"),
 114                    action="store_true", dest='timestamp_dependencies', default=False)
 115     gr.add_option('--pedantic',
 116                    help=("Enable even more compiler warnings"),
 117                    action='store_true', dest='pedantic', default=False)
 118     gr.add_option('--git-local-changes',
 119                    help=("mark version with + if local git changes"),
 120                    action='store_true', dest='GIT_LOCAL_CHANGES', default=False)
 121     gr.add_option('--address-sanitizer',
 122                    help=("Enable address sanitizer compile and linker flags"),
 123                    action="store_true", dest='address_sanitizer', default=False)
 124
 125     gr.add_option('--abi-check',
 126                    help=("Check ABI signatures for libraries"),
 127                    action='store_true', dest='ABI_CHECK', default=False)
 128     gr.add_option('--abi-check-disable',
 129                    help=("Disable ABI checking (used with --enable-developer)"),
 130                    action='store_true', dest='ABI_CHECK_DISABLE', default=False)
 131     gr.add_option('--abi-update',
 132                    help=("Update ABI signature files for libraries"),
 133                    action='store_true', dest='ABI_UPDATE', default=False)
 134
 135     gr.add_option('--show-deps',
 136                    help=("Show dependency tree for the given target"),
 137                    dest='SHOWDEPS', default='')
 138
 139     gr.add_option('--symbol-check',
 140                   help=("check symbols in object files against project rules"),
 141                   action='store_true', dest='SYMBOLCHECK', default=False)
 142
 143     gr.add_option('--dup-symbol-check',
 144                   help=("check for duplicate symbols in object files and system libs (must be configured with --enable-developer)"),
 145                   action='store_true', dest='DUP_SYMBOLCHECK', default=False)
 146
 147     gr.add_option('--why-needed',
 148                   help=("TARGET:DEPENDENCY check why TARGET needs DEPENDENCY"),
 149                   action='store', type='str', dest='WHYNEEDED', default=None)
 150
 151     gr.add_option('--show-duplicates',
 152                   help=("Show objects which are included in multiple binaries or libraries"),
 153                   action='store_true', dest='SHOW_DUPLICATES', default=False)
 154
 155     gr = opt.add_option_group('cross compilation options')
 156
 157     gr.add_option('--cross-compile',
 158                    help=("configure for cross-compilation"),
 159                    action='store_true', dest='CROSS_COMPILE', default=False)
 160     gr.add_option('--cross-execute',
 161                    help=("command prefix to use for cross-execution in configure"),
 162                    action='store', dest='CROSS_EXECUTE', default='')
 163     gr.add_option('--cross-answers',
 164                    help=("answers to cross-compilation configuration (auto modified)"),
 165                    action='store', dest='CROSS_ANSWERS', default='')
 166     gr.add_option('--hostcc',
 167                    help=("set host compiler when cross compiling"),
 168                    action='store', dest='HOSTCC', default=False)
 169
 170     # we use SUPPRESS_HELP for these, as they are ignored, and are there only
 171     # to allow existing RPM spec files to work
 172     opt.add_option('--build',
 173                    help=SUPPRESS_HELP,
 174                    action='store', dest='AUTOCONF_BUILD', default='')
 175     opt.add_option('--host',
 176                    help=SUPPRESS_HELP,
 177                    action='store', dest='AUTOCONF_HOST', default='')
 178     opt.add_option('--target',
 179                    help=SUPPRESS_HELP,
 180                    action='store', dest='AUTOCONF_TARGET', default='')
 181     opt.add_option('--program-prefix',
 182                    help=SUPPRESS_HELP,
 183                    action='store', dest='AUTOCONF_PROGRAM_PREFIX', default='')
 184     opt.add_option('--disable-dependency-tracking',
 185                    help=SUPPRESS_HELP,
 186                    action='store_true', dest='AUTOCONF_DISABLE_DEPENDENCY_TRACKING', default=False)
 187     opt.add_option('--disable-silent-rules',
 188                    help=SUPPRESS_HELP,
 189                    action='store_true', dest='AUTOCONF_DISABLE_SILENT_RULES', default=False)
 190
 191     gr = opt.option_group('dist options')
 192     gr.add_option('--sign-release',
 193                    help='sign the release tarball created by waf dist',
 194                    action='store_true', dest='SIGN_RELEASE')
 195     gr.add_option('--tag',
 196                    help='tag release in git at the same time',
 197                    type='string', action='store', dest='TAG_RELEASE')
 198
 199     opt.add_option('--disable-python',
 200                     help='do not generate python modules',
 201                     action='store_true', dest='disable_python', default=False)
 202
 203     opt.add_option('--extra-python', type=str,
 204                     help=("build selected libraries for the specified "
 205                           "additional version of Python "
 206                           "(example: --extra-python=/usr/bin/python3)"),
 207                     metavar="PYTHON", dest='EXTRA_PYTHON', default=None)
 208
 209
 210 @Utils.run_once
 211 def configure(conf):
 212     conf.env.hlist = []
 213     conf.env.srcdir = conf.srcdir
 214
 215     conf.define('SRCDIR', conf.env['srcdir'])
 216
 217     if Options.options.timestamp_dependencies:
 218         conf.ENABLE_TIMESTAMP_DEPENDENCIES()
 219
 220     conf.SETUP_CONFIGURE_CACHE(Options.options.enable_configure_cache)
 221
 222     # load our local waf extensions
 223     conf.check_tool('gnu_dirs')
 224     conf.check_tool('wafsamba')
 225     conf.check_tool('print_commands')
 226
 227     conf.CHECK_CC_ENV()
 228
 229     conf.check_tool('compiler_cc')
 230
 231     conf.CHECK_STANDARD_LIBPATH()
 232
 233     # we need git for 'waf dist'
 234     conf.find_program('git', var='GIT')
 235
 236     # older gcc versions (< 4.4) does not work with gccdeps, so we have to see if the .d file is generated
 237     if Options.options.enable_gccdeps:
 238         # stale file removal - the configuration may pick up the old .pyc file
 239         p = os.path.join(conf.srcdir, 'buildtools/wafsamba/gccdeps.pyc')
 240         if os.path.exists(p):
 241             os.remove(p)
 242
 243         from TaskGen import feature, after
 244         @feature('testd')
 245         @after('apply_core')
 246         def check_d(self):
 247             tsk = self.compiled_tasks[0]
 248             tsk.outputs.append(tsk.outputs[0].change_ext('.d'))
 249
 250         import Task
 251         cc = Task.TaskBase.classes['cc']
 252         oldmeth = cc.run
 253
 254         cc.run = Task.compile_fun_noshell('cc', '${CC} ${CCFLAGS} ${CPPFLAGS} ${_CCINCFLAGS} ${_CCDEFFLAGS} ${CC_SRC_F}${SRC} ${CC_TGT_F}${TGT[0].abspath(env)}')[0]
 255         try:
 256             try:
 257                 conf.check(features='c testd', fragment='int main() {return 0;}\n', ccflags=['-MD'], mandatory=True, msg='Check for -MD')
 258             except:
 259                 pass
 260             else:
 261                 conf.check_tool('gccdeps', tooldir=conf.srcdir + "/buildtools/wafsamba")
 262         finally:
 263             cc.run = oldmeth
 264
 265     # make the install paths available in environment
 266     conf.env.LIBDIR = Options.options.LIBDIR or '${PREFIX}/lib'
 267     conf.env.BINDIR = Options.options.BINDIR or '${PREFIX}/bin'
 268     conf.env.SBINDIR = Options.options.SBINDIR or '${PREFIX}/sbin'
 269     conf.env.MODULESDIR = Options.options.MODULESDIR
 270     conf.env.PRIVATELIBDIR = Options.options.PRIVATELIBDIR
 271     conf.env.BUNDLED_LIBS = Options.options.BUNDLED_LIBS.split(',')
 272     conf.env.PRIVATE_LIBS = Options.options.PRIVATE_LIBS.split(',')
 273     conf.env.BUILTIN_LIBRARIES = Options.options.BUILTIN_LIBRARIES.split(',')
 274     conf.env.NONSHARED_BINARIES = Options.options.NONSHARED_BINARIES.split(',')
 275
 276     conf.env.PRIVATE_EXTENSION = Options.options.PRIVATE_EXTENSION
 277     conf.env.PRIVATE_EXTENSION_EXCEPTION = Options.options.PRIVATE_EXTENSION_EXCEPTION.split(',')
 278
 279     conf.env.CROSS_COMPILE = Options.options.CROSS_COMPILE
 280     conf.env.CROSS_EXECUTE = Options.options.CROSS_EXECUTE
 281     conf.env.CROSS_ANSWERS = Options.options.CROSS_ANSWERS
 282     conf.env.HOSTCC        = Options.options.HOSTCC
 283
 284     conf.env.AUTOCONF_BUILD = Options.options.AUTOCONF_BUILD
 285     conf.env.AUTOCONF_HOST  = Options.options.AUTOCONF_HOST
 286     conf.env.AUTOCONF_PROGRAM_PREFIX = Options.options.AUTOCONF_PROGRAM_PREFIX
 287
 288     conf.env.disable_python = Options.options.disable_python
 289
 290     conf.env.EXTRA_PYTHON = Options.options.EXTRA_PYTHON
 291
 292     if (conf.env.disable_python and conf.env.EXTRA_PYTHON):
 293         Logs.error('ERROR: cannot specify both --disable-python and --extra-python.')
 294         sys.exit(1)
 295
 296     if (conf.env.AUTOCONF_HOST and
 297         conf.env.AUTOCONF_BUILD and
 298         conf.env.AUTOCONF_BUILD != conf.env.AUTOCONF_HOST):
 299         Logs.error('ERROR: Mismatch between --build and --host. Please use --cross-compile instead')
 300         sys.exit(1)
 301     if conf.env.AUTOCONF_PROGRAM_PREFIX:
 302         Logs.error('ERROR: --program-prefix not supported')
 303         sys.exit(1)
 304
 305     # enable ABI checking for developers
 306     conf.env.ABI_CHECK = Options.options.ABI_CHECK or Options.options.developer
 307     if Options.options.ABI_CHECK_DISABLE:
 308         conf.env.ABI_CHECK = False
 309     try:
 310         conf.find_program('gdb', mandatory=True)
 311     except:
 312         conf.env.ABI_CHECK = False
 313
 314     conf.env.GIT_LOCAL_CHANGES = Options.options.GIT_LOCAL_CHANGES
 315
 316     conf.CHECK_UNAME()
 317
 318     # see if we can compile and run a simple C program
 319     conf.CHECK_CODE('printf("hello world")',
 320                     define='HAVE_SIMPLE_C_PROG',
 321                     mandatory=True,
 322                     execute=True,
 323                     headers='stdio.h',
 324                     msg='Checking simple C program')
 325
 326     # Try to find the right extra flags for -Werror behaviour
 327     for f in ["-Werror",       # GCC
 328               "-errwarn=%all", # Sun Studio
 329               "-qhalt=w",     # IBM xlc
 330               "-w2",           # Tru64
 331              ]:
 332         if conf.CHECK_CFLAGS([f], '''
 333 '''):
 334             if not 'WERROR_CFLAGS' in conf.env:
 335                 conf.env['WERROR_CFLAGS'] = []
 336             conf.env['WERROR_CFLAGS'].extend([f])
 337             break
 338
 339     # check which compiler/linker flags are needed for rpath support
 340     if not conf.CHECK_LDFLAGS(['-Wl,-rpath,.']) and conf.CHECK_LDFLAGS(['-Wl,-R,.']):
 341         conf.env['RPATH_ST'] = '-Wl,-R,%s'
 342
 343     # check for rpath
 344     if conf.CHECK_LIBRARY_SUPPORT(rpath=True):
 345         support_rpath = True
 346         conf.env.RPATH_ON_BUILD   = not Options.options.disable_rpath_build
 347         conf.env.RPATH_ON_INSTALL = (conf.env.RPATH_ON_BUILD and
 348                                      not Options.options.disable_rpath_install)
 349         if not conf.env.PRIVATELIBDIR:
 350             conf.env.PRIVATELIBDIR = '%s/%s' % (conf.env.LIBDIR, Utils.g_module.APPNAME)
 351         conf.env.RPATH_ON_INSTALL_PRIVATE = (
 352             not Options.options.disable_rpath_private_install)
 353     else:
 354         support_rpath = False
 355         conf.env.RPATH_ON_INSTALL = False
 356         conf.env.RPATH_ON_BUILD   = False
 357         conf.env.RPATH_ON_INSTALL_PRIVATE = False
 358         if not conf.env.PRIVATELIBDIR:
 359             # rpath is not possible so there is no sense in having a
 360             # private library directory by default.
 361             # the user can of course always override it.
 362             conf.env.PRIVATELIBDIR = conf.env.LIBDIR
 363
 364     if (not Options.options.disable_symbol_versions and
 365         conf.CHECK_LIBRARY_SUPPORT(rpath=support_rpath,
 366                                    version_script=True,
 367                                    msg='-Wl,--version-script support')):
 368         conf.env.HAVE_LD_VERSION_SCRIPT = True
 369     else:
 370         conf.env.HAVE_LD_VERSION_SCRIPT = False
 371
 372     if conf.CHECK_CFLAGS(['-fvisibility=hidden'] + conf.env.WERROR_CFLAGS):
 373         conf.env.VISIBILITY_CFLAGS = '-fvisibility=hidden'
 374         conf.CHECK_CODE('''int main(void) { return 0; }
 375                            __attribute__((visibility("default"))) void vis_foo2(void) {}''',
 376                         cflags=conf.env.VISIBILITY_CFLAGS,
 377                         strict=True,
 378                         define='HAVE_VISIBILITY_ATTR', addmain=False)
 379
 380     # check HAVE_CONSTRUCTOR_ATTRIBUTE
 381     conf.CHECK_CODE('''
 382             void test_constructor_attribute(void) __attribute__ ((constructor));
 383
 384             void test_constructor_attribute(void)
 385             {
 386                 return;
 387             }
 388
 389             int main(void) {
 390                 return 0;
 391             }
 392             ''',
 393             'HAVE_CONSTRUCTOR_ATTRIBUTE',
 394             addmain=False,
 395             strict=True,
 396             msg='Checking for library constructor support')
 397
 398         # check HAVE_DESTRUCTOR_ATTRIBUTE
 399     conf.CHECK_CODE('''
 400             void test_destructor_attribute(void) __attribute__ ((destructor));
 401
 402             void test_destructor_attribute(void)
 403             {
 404                 return;
 405             }
 406
 407             int main(void) {
 408                 return 0;
 409             }
 410             ''',
 411             'HAVE_DESTRUCTOR_ATTRIBUTE',
 412             addmain=False,
 413             strict=True,
 414             msg='Checking for library destructor support')
 415
 416     conf.CHECK_CODE('''
 417             void test_attribute(void) __attribute__ (());
 418
 419             void test_attribute(void)
 420             {
 421                 return;
 422             }
 423
 424             int main(void) {
 425                 return 0;
 426             }
 427             ''',
 428             'HAVE___ATTRIBUTE__',
 429             addmain=False,
 430             strict=True,
 431             msg='Checking for __attribute__')
 432
 433     if sys.platform.startswith('aix'):
 434         conf.DEFINE('_ALL_SOURCE', 1, add_to_cflags=True)
 435         # Might not be needed if ALL_SOURCE is defined
 436         # conf.DEFINE('_XOPEN_SOURCE', 600, add_to_cflags=True)
 437
 438     # we should use the PIC options in waf instead
 439     # Some compilo didn't support -fPIC but just print a warning
 440     if conf.env['COMPILER_CC'] == "suncc":
 441         conf.ADD_CFLAGS('-KPIC', testflags=True)
 442         # we really want define here as we need to have this
 443         # define even during the tests otherwise detection of
 444         # boolean is broken
 445         conf.DEFINE('_STDC_C99', 1, add_to_cflags=True)
 446         conf.DEFINE('_XPG6', 1, add_to_cflags=True)
 447     else:
 448         conf.ADD_CFLAGS('-fPIC', testflags=True)
 449
 450     # On Solaris 8 with suncc (at least) the flags for the linker to define the name of the
 451     # library are not always working (if the command line is very very long and with a lot
 452     # files)
 453
 454     if conf.env['COMPILER_CC'] == "suncc":
 455         save = conf.env['SONAME_ST']
 456         conf.env['SONAME_ST'] = '-Wl,-h,%s'
 457         if not conf.CHECK_SHLIB_INTRASINC_NAME_FLAGS("Checking if flags %s are ok" % conf.env['SONAME_ST']):
 458             conf.env['SONAME_ST'] = save
 459
 460     conf.CHECK_INLINE()
 461
 462     # check for pkgconfig
 463     conf.CHECK_CFG(atleast_pkgconfig_version='0.0.0')
 464
 465     conf.DEFINE('_GNU_SOURCE', 1, add_to_cflags=True)
 466     conf.DEFINE('_XOPEN_SOURCE_EXTENDED', 1, add_to_cflags=True)
 467
 468     # on Tru64 certain features are only available with _OSF_SOURCE set to 1
 469     # and _XOPEN_SOURCE set to 600
 470     if conf.env['SYSTEM_UNAME_SYSNAME'] == 'OSF1':
 471         conf.DEFINE('_OSF_SOURCE', 1, add_to_cflags=True)
 472         conf.DEFINE('_XOPEN_SOURCE', 600, add_to_cflags=True)
 473
 474     # SCM_RIGHTS is only avail if _XOPEN_SOURCE iѕ defined on IRIX
 475     if conf.env['SYSTEM_UNAME_SYSNAME'] == 'IRIX':
 476         conf.DEFINE('_XOPEN_SOURCE', 600, add_to_cflags=True)
 477         conf.DEFINE('_BSD_TYPES', 1, add_to_cflags=True)
 478
 479     # Try to find the right extra flags for C99 initialisers
 480     for f in ["", "-AC99", "-qlanglvl=extc99", "-qlanglvl=stdc99", "-c99"]:
 481         if conf.CHECK_CFLAGS([f], '''
 482 struct foo {int x;char y;};
 483 struct foo bar = { .y = 'X', .x = 1 };
 484 '''):
 485             if f != "":
 486                 conf.ADD_CFLAGS(f)
 487             break
 488
 489     # get the base headers we'll use for the rest of the tests
 490     conf.CHECK_HEADERS('stdio.h sys/types.h sys/stat.h stdlib.h stddef.h memory.h string.h',
 491                        add_headers=True)
 492     conf.CHECK_HEADERS('strings.h inttypes.h stdint.h unistd.h minix/config.h', add_headers=True)
 493     conf.CHECK_HEADERS('ctype.h', add_headers=True)
 494
 495     if sys.platform != 'darwin':
 496         conf.CHECK_HEADERS('standards.h', add_headers=True)
 497
 498     conf.CHECK_HEADERS('stdbool.h stdint.h stdarg.h vararg.h', add_headers=True)
 499     conf.CHECK_HEADERS('limits.h assert.h')
 500
 501     # see if we need special largefile flags
 502     if not conf.CHECK_LARGEFILE():
 503         raise Utils.WafError('Samba requires large file support support, but not available on this platform: sizeof(off_t) < 8')
 504
 505     if conf.env.HAVE_STDDEF_H and conf.env.HAVE_STDLIB_H:
 506         conf.DEFINE('STDC_HEADERS', 1)
 507
 508     conf.CHECK_HEADERS('sys/time.h time.h', together=True)
 509
 510     if conf.env.HAVE_SYS_TIME_H and conf.env.HAVE_TIME_H:
 511         conf.DEFINE('TIME_WITH_SYS_TIME', 1)
 512
 513     # cope with different extensions for libraries
 514     (root, ext) = os.path.splitext(conf.env.shlib_PATTERN)
 515     if ext[0] == '.':
 516         conf.define('SHLIBEXT', ext[1:], quote=True)
 517     else:
 518         conf.define('SHLIBEXT', "so", quote=True)
 519
 520     # First try a header check for cross-compile friendlyness
 521     conf.CHECK_CODE(code = """#ifdef __BYTE_ORDER
 522                         #define B __BYTE_ORDER
 523                         #elif defined(BYTE_ORDER)
 524                         #define B BYTE_ORDER
 525                         #endif
 526
 527                         #ifdef __LITTLE_ENDIAN
 528                         #define LITTLE __LITTLE_ENDIAN
 529                         #elif defined(LITTLE_ENDIAN)
 530                         #define LITTLE LITTLE_ENDIAN
 531                         #endif
 532
 533                         #if !defined(LITTLE) || !defined(B) || LITTLE != B
 534                         #error Not little endian.
 535                         #endif
 536                         int main(void) { return 0; }""",
 537                             addmain=False,
 538                             headers="endian.h sys/endian.h",
 539                             define="HAVE_LITTLE_ENDIAN")
 540     conf.CHECK_CODE(code = """#ifdef __BYTE_ORDER
 541                         #define B __BYTE_ORDER
 542                         #elif defined(BYTE_ORDER)
 543                         #define B BYTE_ORDER
 544                         #endif
 545
 546                         #ifdef __BIG_ENDIAN
 547                         #define BIG __BIG_ENDIAN
 548                         #elif defined(BIG_ENDIAN)
 549                         #define BIG BIG_ENDIAN
 550                         #endif
 551
 552                         #if !defined(BIG) || !defined(B) || BIG != B
 553                         #error Not big endian.
 554                         #endif
 555                         int main(void) { return 0; }""",
 556                             addmain=False,
 557                             headers="endian.h sys/endian.h",
 558                             define="HAVE_BIG_ENDIAN")
 559
 560     if not conf.CONFIG_SET("HAVE_BIG_ENDIAN") and not conf.CONFIG_SET("HAVE_LITTLE_ENDIAN"):
 561         # That didn't work!  Do runtime test.
 562         conf.CHECK_CODE("""union { int i; char c[sizeof(int)]; } u;
 563             u.i = 0x01020304;
 564             return u.c[0] == 0x04 && u.c[1] == 0x03 && u.c[2] == 0x02 && u.c[3] == 0x01 ? 0 : 1;""",
 565                           addmain=True, execute=True,
 566                           define='HAVE_LITTLE_ENDIAN',
 567                           msg="Checking for HAVE_LITTLE_ENDIAN - runtime")
 568         conf.CHECK_CODE("""union { int i; char c[sizeof(int)]; } u;
 569             u.i = 0x01020304;
 570             return u.c[0] == 0x01 && u.c[1] == 0x02 && u.c[2] == 0x03 && u.c[3] == 0x04 ? 0 : 1;""",
 571                           addmain=True, execute=True,
 572                           define='HAVE_BIG_ENDIAN',
 573                           msg="Checking for HAVE_BIG_ENDIAN - runtime")
 574
 575     # Extra sanity check.
 576     if conf.CONFIG_SET("HAVE_BIG_ENDIAN") == conf.CONFIG_SET("HAVE_LITTLE_ENDIAN"):
 577         Logs.error("Failed endian determination.  The PDP-11 is back?")
 578         sys.exit(1)
 579     else:
 580         if conf.CONFIG_SET("HAVE_BIG_ENDIAN"):
 581             conf.DEFINE('WORDS_BIGENDIAN', 1)
 582
 583     # check if signal() takes a void function
 584     if conf.CHECK_CODE('return *(signal (0, 0)) (0) == 1',
 585                        define='RETSIGTYPE_INT',
 586                        execute=False,
 587                        headers='signal.h',
 588                        msg='Checking if signal handlers return int'):
 589         conf.DEFINE('RETSIGTYPE', 'int')
 590     else:
 591         conf.DEFINE('RETSIGTYPE', 'void')
 592
 593     conf.CHECK_VARIABLE('__FUNCTION__', define='HAVE_FUNCTION_MACRO')
 594
 595     conf.CHECK_CODE('va_list ap1,ap2; va_copy(ap1,ap2)',
 596                     define="HAVE_VA_COPY",
 597                     msg="Checking for va_copy")
 598
 599     conf.CHECK_CODE('''
 600                     #define eprintf(...) fprintf(stderr, __VA_ARGS__)
 601                     eprintf("bla", "bar")
 602                     ''', define='HAVE__VA_ARGS__MACRO')
 603
 604     conf.SAMBA_BUILD_ENV()
 605
 606
 607 def build(bld):
 608     # give a more useful message if the source directory has moved
 609     relpath = os_path_relpath(bld.curdir, bld.srcnode.abspath())
 610     if relpath.find('../') != -1:
 611         Logs.error('bld.curdir %s is not a child of %s' % (bld.curdir, bld.srcnode.abspath()))
 612         raise Utils.WafError('''The top source directory has moved. Please run distclean and reconfigure''')
 613
 614     bld.CHECK_MAKEFLAGS()
 615     bld.SETUP_BUILD_GROUPS()
 616     bld.ENFORCE_GROUP_ORDERING()
 617     bld.CHECK_PROJECT_RULES()