buildtools/wafsamba/samba_utils.py

   1 # a waf tool to add autoconf-like macros to the configure section
   2 # and for SAMBA_ macros for building libraries, binaries etc
   3
   4 import errno
   5 import os, sys, re, fnmatch, shlex, inspect
   6 from optparse import SUPPRESS_HELP
   7 from waflib import Build, Options, Utils, Task, Logs, Configure, Errors, Context
   8 from waflib import Scripting
   9 from waflib.TaskGen import feature, before, after
  10 from waflib.Configure import ConfigurationContext
  11 from waflib.Logs import debug
  12 from waflib import ConfigSet
  13 from waflib.Build import CACHE_SUFFIX
  14
  15 # TODO: make this a --option
  16 LIB_PATH="shared"
  17
  18 # Py3 transition helper function to get a string from a variable that
  19 # may be 'str' or 'bytes'. If 'bytes' then it is decoded using 'utf8'.
  20 # If 'str' is passed it is returned unchanged.
  21 def get_string(bytesorstring):
  22     tmp = bytesorstring
  23     if isinstance(bytesorstring, bytes):
  24         tmp = bytesorstring.decode('utf8')
  25     elif not isinstance(bytesorstring, str):
  26         raise ValueError('Expected byte of string for %s:%s' % (type(bytesorstring), bytesorstring))
  27     return tmp
  28
  29 # sigh, python octal constants are a mess
  30 MODE_644 = int('644', 8)
  31 MODE_744 = int('744', 8)
  32 MODE_755 = int('755', 8)
  33 MODE_777 = int('777', 8)
  34
  35 def conf(f):
  36     # override in order to propagate the argument "mandatory"
  37     def fun(*k, **kw):
  38         mandatory = True
  39         if 'mandatory' in kw:
  40             mandatory = kw['mandatory']
  41             del kw['mandatory']
  42
  43         try:
  44             return f(*k, **kw)
  45         except Errors.ConfigurationError:
  46             if mandatory:
  47                 raise
  48
  49     fun.__name__ = f.__name__
  50     if 'mandatory' in inspect.getsource(f):
  51         fun = f
  52
  53     setattr(Configure.ConfigurationContext, f.__name__, fun)
  54     setattr(Build.BuildContext, f.__name__, fun)
  55     return f
  56 Configure.conf = conf
  57 Configure.conftest = conf
  58
  59 @conf
  60 def SET_TARGET_TYPE(ctx, target, value):
  61     '''set the target type of a target'''
  62     cache = LOCAL_CACHE(ctx, 'TARGET_TYPE')
  63     if target in cache and cache[target] != 'EMPTY':
  64         Logs.error("ERROR: Target '%s' in directory %s re-defined as %s - was %s" % (target, ctx.path.abspath(), value, cache[target]))
  65         sys.exit(1)
  66     LOCAL_CACHE_SET(ctx, 'TARGET_TYPE', target, value)
  67     debug("task_gen: Target '%s' created of type '%s' in %s" % (target, value, ctx.path.abspath()))
  68     return True
  69
  70
  71 def GET_TARGET_TYPE(ctx, target):
  72     '''get target type from cache'''
  73     cache = LOCAL_CACHE(ctx, 'TARGET_TYPE')
  74     if not target in cache:
  75         return None
  76     return cache[target]
  77
  78
  79 def ADD_LD_LIBRARY_PATH(path):
  80     '''add something to LD_LIBRARY_PATH'''
  81     if 'LD_LIBRARY_PATH' in os.environ:
  82         oldpath = os.environ['LD_LIBRARY_PATH']
  83     else:
  84         oldpath = ''
  85     newpath = oldpath.split(':')
  86     if not path in newpath:
  87         newpath.append(path)
  88         os.environ['LD_LIBRARY_PATH'] = ':'.join(newpath)
  89
  90
  91 def needs_private_lib(bld, target):
  92     '''return True if a target links to a private library'''
  93     for lib in getattr(target, "final_libs", []):
  94         t = bld.get_tgen_by_name(lib)
  95         if t and getattr(t, 'private_library', False):
  96             return True
  97     return False
  98
  99
 100 def install_rpath(target):
 101     '''the rpath value for installation'''
 102     bld = target.bld
 103     bld.env['RPATH'] = []
 104     ret = set()
 105     if bld.env.RPATH_ON_INSTALL:
 106         ret.add(bld.EXPAND_VARIABLES(bld.env.LIBDIR))
 107     if bld.env.RPATH_ON_INSTALL_PRIVATE and needs_private_lib(bld, target):
 108         ret.add(bld.EXPAND_VARIABLES(bld.env.PRIVATELIBDIR))
 109     return list(ret)
 110
 111
 112 def build_rpath(bld):
 113     '''the rpath value for build'''
 114     rpaths = [os.path.normpath('%s/%s' % (bld.env.BUILD_DIRECTORY, d)) for d in ("shared", "shared/private")]
 115     bld.env['RPATH'] = []
 116     if bld.env.RPATH_ON_BUILD:
 117         return rpaths
 118     for rpath in rpaths:
 119         ADD_LD_LIBRARY_PATH(rpath)
 120     return []
 121
 122
 123 @conf
 124 def LOCAL_CACHE(ctx, name):
 125     '''return a named build cache dictionary, used to store
 126        state inside other functions'''
 127     if name in ctx.env:
 128         return ctx.env[name]
 129     ctx.env[name] = {}
 130     return ctx.env[name]
 131
 132
 133 @conf
 134 def LOCAL_CACHE_SET(ctx, cachename, key, value):
 135     '''set a value in a local cache'''
 136     cache = LOCAL_CACHE(ctx, cachename)
 137     cache[key] = value
 138
 139
 140 @conf
 141 def ASSERT(ctx, expression, msg):
 142     '''a build assert call'''
 143     if not expression:
 144         raise Errors.WafError("ERROR: %s\n" % msg)
 145 Build.BuildContext.ASSERT = ASSERT
 146
 147
 148 def SUBDIR(bld, subdir, list):
 149     '''create a list of files by pre-pending each with a subdir name'''
 150     ret = ''
 151     for l in TO_LIST(list):
 152         ret = ret + os.path.normpath(os.path.join(subdir, l)) + ' '
 153     return ret
 154 Build.BuildContext.SUBDIR = SUBDIR
 155
 156
 157 def dict_concat(d1, d2):
 158     '''concatenate two dictionaries d1 += d2'''
 159     for t in d2:
 160         if t not in d1:
 161             d1[t] = d2[t]
 162
 163 def ADD_COMMAND(opt, name, function):
 164     '''add a new top level command to waf'''
 165     Context.g_module.__dict__[name] = function
 166     opt.name = function
 167 Options.OptionsContext.ADD_COMMAND = ADD_COMMAND
 168
 169
 170 @feature('c', 'cc', 'cshlib', 'cprogram')
 171 @before('apply_core','exec_rule')
 172 def process_depends_on(self):
 173     '''The new depends_on attribute for build rules
 174        allow us to specify a dependency on output from
 175        a source generation rule'''
 176     if getattr(self , 'depends_on', None):
 177         lst = self.to_list(self.depends_on)
 178         for x in lst:
 179             y = self.bld.get_tgen_by_name(x)
 180             self.bld.ASSERT(y is not None, "Failed to find dependency %s of %s" % (x, self.name))
 181             y.post()
 182             if getattr(y, 'more_includes', None):
 183                   self.includes += " " + y.more_includes
 184
 185
 186 def unique_list(seq):
 187     '''return a uniquified list in the same order as the existing list'''
 188     seen = {}
 189     result = []
 190     for item in seq:
 191         if item in seen: continue
 192         seen[item] = True
 193         result.append(item)
 194     return result
 195
 196
 197 def TO_LIST(str, delimiter=None):
 198     '''Split a list, preserving quoted strings and existing lists'''
 199     if str is None:
 200         return []
 201     if isinstance(str, list):
 202         # we need to return a new independent list...
 203         return list(str)
 204     if len(str) == 0:
 205         return []
 206     lst = str.split(delimiter)
 207     # the string may have had quotes in it, now we
 208     # check if we did have quotes, and use the slower shlex
 209     # if we need to
 210     for e in lst:
 211         if e[0] == '"':
 212             return shlex.split(str)
 213     return lst
 214
 215
 216 def subst_vars_error(string, env):
 217     '''substitute vars, throw an error if a variable is not defined'''
 218     lst = re.split(r'(\$\{\w+\})', string)
 219     out = []
 220     for v in lst:
 221         if re.match(r'\$\{\w+\}', v):
 222             vname = v[2:-1]
 223             if not vname in env:
 224                 raise KeyError("Failed to find variable %s in %s in env %s <%s>" % (vname, string, env.__class__, str(env)))
 225             v = env[vname]
 226             if isinstance(v, list):
 227                 v = ' '.join(v)
 228         out.append(v)
 229     return ''.join(out)
 230
 231
 232 @conf
 233 def SUBST_ENV_VAR(ctx, varname):
 234     '''Substitute an environment variable for any embedded variables'''
 235     return subst_vars_error(ctx.env[varname], ctx.env)
 236 Build.BuildContext.SUBST_ENV_VAR = SUBST_ENV_VAR
 237
 238
 239 def recursive_dirlist(dir, relbase, pattern=None):
 240     '''recursive directory list'''
 241     ret = []
 242     for f in os.listdir(dir):
 243         f2 = dir + '/' + f
 244         if os.path.isdir(f2):
 245             ret.extend(recursive_dirlist(f2, relbase))
 246         else:
 247             if pattern and not fnmatch.fnmatch(f, pattern):
 248                 continue
 249             ret.append(os.path.relpath(f2, relbase))
 250     return ret
 251
 252
 253 def symlink(src, dst, force=True):
 254     """Can create symlink by force"""
 255     try:
 256         os.symlink(src, dst)
 257     except OSError as exc:
 258         if exc.errno == errno.EEXIST and force:
 259             os.remove(dst)
 260             os.symlink(src, dst)
 261         else:
 262             raise
 263
 264
 265 def mkdir_p(dir):
 266     '''like mkdir -p'''
 267     if not dir:
 268         return
 269     if dir.endswith("/"):
 270         mkdir_p(dir[:-1])
 271         return
 272     if os.path.isdir(dir):
 273         return
 274     mkdir_p(os.path.dirname(dir))
 275     os.mkdir(dir)
 276
 277
 278 def SUBST_VARS_RECURSIVE(string, env):
 279     '''recursively expand variables'''
 280     if string is None:
 281         return string
 282     limit=100
 283     while (string.find('${') != -1 and limit > 0):
 284         string = subst_vars_error(string, env)
 285         limit -= 1
 286     return string
 287
 288
 289 @conf
 290 def EXPAND_VARIABLES(ctx, varstr, vars=None):
 291     '''expand variables from a user supplied dictionary
 292
 293     This is most useful when you pass vars=locals() to expand
 294     all your local variables in strings
 295     '''
 296
 297     if isinstance(varstr, list):
 298         ret = []
 299         for s in varstr:
 300             ret.append(EXPAND_VARIABLES(ctx, s, vars=vars))
 301         return ret
 302
 303     if not isinstance(varstr, str):
 304         return varstr
 305
 306     env = ConfigSet.ConfigSet()
 307     ret = varstr
 308     # substitute on user supplied dict if available
 309     if vars is not None:
 310         for v in vars.keys():
 311             env[v] = vars[v]
 312         ret = SUBST_VARS_RECURSIVE(ret, env)
 313
 314     # if anything left, subst on the environment as well
 315     if ret.find('${') != -1:
 316         ret = SUBST_VARS_RECURSIVE(ret, ctx.env)
 317     # make sure there is nothing left. Also check for the common
 318     # typo of $( instead of ${
 319     if ret.find('${') != -1 or ret.find('$(') != -1:
 320         Logs.error('Failed to substitute all variables in varstr=%s' % ret)
 321         sys.exit(1)
 322     return ret
 323 Build.BuildContext.EXPAND_VARIABLES = EXPAND_VARIABLES
 324
 325
 326 def RUN_COMMAND(cmd,
 327                 env=None,
 328                 shell=False):
 329     '''run a external command, return exit code or signal'''
 330     if env:
 331         cmd = SUBST_VARS_RECURSIVE(cmd, env)
 332
 333     status = os.system(cmd)
 334     if os.WIFEXITED(status):
 335         return os.WEXITSTATUS(status)
 336     if os.WIFSIGNALED(status):
 337         return - os.WTERMSIG(status)
 338     Logs.error("Unknown exit reason %d for command: %s" % (status, cmd))
 339     return -1
 340
 341
 342 def RUN_PYTHON_TESTS(testfiles, pythonpath=None, extra_env=None):
 343     env = LOAD_ENVIRONMENT()
 344     if pythonpath is None:
 345         pythonpath = os.path.join(Context.g_module.out, 'python')
 346     result = 0
 347     for interp in env.python_interpreters:
 348         if not isinstance(interp, str):
 349             interp = ' '.join(interp)
 350         for testfile in testfiles:
 351             cmd = "PYTHONPATH=%s %s %s" % (pythonpath, interp, testfile)
 352             if extra_env:
 353                 for key, value in extra_env.items():
 354                     cmd = "%s=%s %s" % (key, value, cmd)
 355             print('Running Python test with %s: %s' % (interp, testfile))
 356             ret = RUN_COMMAND(cmd)
 357             if ret:
 358                 print('Python test failed: %s' % cmd)
 359                 result = ret
 360     return result
 361
 362
 363 # make sure we have md5. some systems don't have it
 364 try:
 365     from hashlib import md5
 366     # Even if hashlib.md5 exists, it may be unusable.
 367     # Try to use MD5 function. In FIPS mode this will cause an exception
 368     # and we'll get to the replacement code
 369     foo = md5(b'abcd')
 370 except:
 371     try:
 372         import md5
 373         # repeat the same check here, mere success of import is not enough.
 374         # Try to use MD5 function. In FIPS mode this will cause an exception
 375         foo = md5.md5(b'abcd')
 376     except:
 377         Context.SIG_NIL = hash('abcd')
 378         class replace_md5(object):
 379             def __init__(self):
 380                 self.val = None
 381             def update(self, val):
 382                 self.val = hash((self.val, val))
 383             def digest(self):
 384                 return str(self.val)
 385             def hexdigest(self):
 386                 return self.digest().encode('hex')
 387         def replace_h_file(filename):
 388             f = open(filename, 'rb')
 389             m = replace_md5()
 390             while (filename):
 391                 filename = f.read(100000)
 392                 m.update(filename)
 393             f.close()
 394             return m.digest()
 395         Utils.md5 = replace_md5
 396         Task.md5 = replace_md5
 397         Utils.h_file = replace_h_file
 398
 399
 400 def LOAD_ENVIRONMENT():
 401     '''load the configuration environment, allowing access to env vars
 402        from new commands'''
 403     env = ConfigSet.ConfigSet()
 404     try:
 405         p = os.path.join(Context.g_module.out, 'c4che/default'+CACHE_SUFFIX)
 406         env.load(p)
 407     except (OSError, IOError):
 408         pass
 409     return env
 410
 411
 412 def IS_NEWER(bld, file1, file2):
 413     '''return True if file1 is newer than file2'''
 414     curdir = bld.path.abspath()
 415     t1 = os.stat(os.path.join(curdir, file1)).st_mtime
 416     t2 = os.stat(os.path.join(curdir, file2)).st_mtime
 417     return t1 > t2
 418 Build.BuildContext.IS_NEWER = IS_NEWER
 419
 420
 421 @conf
 422 def RECURSE(ctx, directory):
 423     '''recurse into a directory, relative to the curdir or top level'''
 424     try:
 425         visited_dirs = ctx.visited_dirs
 426     except AttributeError:
 427         visited_dirs = ctx.visited_dirs = set()
 428     d = os.path.join(ctx.path.abspath(), directory)
 429     if os.path.exists(d):
 430         abspath = os.path.abspath(d)
 431     else:
 432         abspath = os.path.abspath(os.path.join(Context.g_module.top, directory))
 433     ctxclass = ctx.__class__.__name__
 434     key = ctxclass + ':' + abspath
 435     if key in visited_dirs:
 436         # already done it
 437         return
 438     visited_dirs.add(key)
 439     relpath = os.path.relpath(abspath, ctx.path.abspath())
 440     if ctxclass in ['OptionsContext',
 441                     'ConfigurationContext',
 442                     'BuildContext',
 443                     'CleanContext',
 444                     'InstallContext',
 445                     'UninstallContext',
 446                     'ListContext']:
 447         return ctx.recurse(relpath)
 448     if 'waflib.extras.compat15' in sys.modules:
 449         return ctx.recurse(relpath)
 450     raise Errors.WafError('Unknown RECURSE context class: {}'.format(ctxclass))
 451 Options.OptionsContext.RECURSE = RECURSE
 452 Build.BuildContext.RECURSE = RECURSE
 453
 454
 455 def CHECK_MAKEFLAGS(options):
 456     '''check for MAKEFLAGS environment variable in case we are being
 457     called from a Makefile try to honor a few make command line flags'''
 458     if not 'WAF_MAKE' in os.environ:
 459         return
 460     makeflags = os.environ.get('MAKEFLAGS')
 461     if makeflags is None:
 462         makeflags = ""
 463     jobs_set = False
 464     jobs = None
 465     # we need to use shlex.split to cope with the escaping of spaces
 466     # in makeflags
 467     for opt in shlex.split(makeflags):
 468         # options can come either as -x or as x
 469         if opt[0:2] == 'V=':
 470             options.verbose = Logs.verbose = int(opt[2:])
 471             if Logs.verbose > 0:
 472                 Logs.zones = ['runner']
 473             if Logs.verbose > 2:
 474                 Logs.zones = ['*']
 475         elif opt[0].isupper() and opt.find('=') != -1:
 476             # this allows us to set waf options on the make command line
 477             # for example, if you do "make FOO=blah", then we set the
 478             # option 'FOO' in Options.options, to blah. If you look in wafsamba/wscript
 479             # you will see that the command line accessible options have their dest=
 480             # set to uppercase, to allow for passing of options from make in this way
 481             # this is also how "make test TESTS=testpattern" works, and
 482             # "make VERBOSE=1" as well as things like "make SYMBOLCHECK=1"
 483             loc = opt.find('=')
 484             setattr(options, opt[0:loc], opt[loc+1:])
 485         elif opt[0] != '-':
 486             for v in opt:
 487                 if re.search(r'j[0-9]*$', v):
 488                     jobs_set = True
 489                     jobs = opt.strip('j')
 490                 elif v == 'k':
 491                     options.keep = True
 492         elif re.search(r'-j[0-9]*$', opt):
 493             jobs_set = True
 494             jobs = opt.strip('-j')
 495         elif opt == '-k':
 496             options.keep = True
 497     if not jobs_set:
 498         # default to one job
 499         options.jobs = 1
 500     elif jobs_set and jobs:
 501         options.jobs = int(jobs)
 502
 503 waflib_options_parse_cmd_args = Options.OptionsContext.parse_cmd_args
 504 def wafsamba_options_parse_cmd_args(self, _args=None, cwd=None, allow_unknown=False):
 505     (options, commands, envvars) = \
 506         waflib_options_parse_cmd_args(self,
 507                                       _args=_args,
 508                                       cwd=cwd,
 509                                       allow_unknown=allow_unknown)
 510     CHECK_MAKEFLAGS(options)
 511     if options.jobs == 1:
 512         #
 513         # waflib.Runner.Parallel processes jobs inline if the possible number
 514         # of jobs is just 1. But (at least in waf <= 2.0.12) it still calls
 515         # create a waflib.Runner.Spawner() which creates a single
 516         # waflib.Runner.Consumer() thread that tries to process jobs from the
 517         # queue.
 518         #
 519         # This has strange effects, which are not noticed typically,
 520         # but at least on AIX python has broken threading and fails
 521         # in random ways.
 522         #
 523         # So we just add a dummy Spawner class.
 524         class NoOpSpawner(object):
 525             def __init__(self, master):
 526                 return
 527         from waflib import Runner
 528         Runner.Spawner = NoOpSpawner
 529     return options, commands, envvars
 530 Options.OptionsContext.parse_cmd_args = wafsamba_options_parse_cmd_args
 531
 532 option_groups = {}
 533
 534 def option_group(opt, name):
 535     '''find or create an option group'''
 536     global option_groups
 537     if name in option_groups:
 538         return option_groups[name]
 539     gr = opt.add_option_group(name)
 540     option_groups[name] = gr
 541     return gr
 542 Options.OptionsContext.option_group = option_group
 543
 544
 545 def save_file(filename, contents, create_dir=False):
 546     '''save data to a file'''
 547     if create_dir:
 548         mkdir_p(os.path.dirname(filename))
 549     try:
 550         f = open(filename, 'w')
 551         f.write(contents)
 552         f.close()
 553     except:
 554         return False
 555     return True
 556
 557
 558 def load_file(filename):
 559     '''return contents of a file'''
 560     try:
 561         f = open(filename, 'r')
 562         r = f.read()
 563         f.close()
 564     except:
 565         return None
 566     return r
 567
 568
 569 def reconfigure(ctx):
 570     '''rerun configure if necessary'''
 571     if not os.path.exists(os.environ.get('WAFLOCK', '.lock-wscript')):
 572         raise Errors.WafError('configure has not been run')
 573     import samba_wildcard
 574     bld = samba_wildcard.fake_build_environment()
 575     Configure.autoconfig = True
 576     Scripting.check_configured(bld)
 577
 578
 579 def map_shlib_extension(ctx, name, python=False):
 580     '''map a filename with a shared library extension of .so to the real shlib name'''
 581     if name is None:
 582         return None
 583     if name[-1:].isdigit():
 584         # some libraries have specified versions in the wscript rule
 585         return name
 586     (root1, ext1) = os.path.splitext(name)
 587     if python:
 588         return ctx.env.pyext_PATTERN % root1
 589     else:
 590         (root2, ext2) = os.path.splitext(ctx.env.cshlib_PATTERN)
 591     return root1+ext2
 592 Build.BuildContext.map_shlib_extension = map_shlib_extension
 593
 594 def apply_pattern(filename, pattern):
 595     '''apply a filename pattern to a filename that may have a directory component'''
 596     dirname = os.path.dirname(filename)
 597     if not dirname:
 598         return pattern % filename
 599     basename = os.path.basename(filename)
 600     return os.path.join(dirname, pattern % basename)
 601
 602 def make_libname(ctx, name, nolibprefix=False, version=None, python=False):
 603     """make a library filename
 604          Options:
 605               nolibprefix: don't include the lib prefix
 606               version    : add a version number
 607               python     : if we should use python module name conventions"""
 608
 609     if python:
 610         libname = apply_pattern(name, ctx.env.pyext_PATTERN)
 611     else:
 612         libname = apply_pattern(name, ctx.env.cshlib_PATTERN)
 613     if nolibprefix and libname[0:3] == 'lib':
 614         libname = libname[3:]
 615     if version:
 616         if version[0] == '.':
 617             version = version[1:]
 618         (root, ext) = os.path.splitext(libname)
 619         if ext == ".dylib":
 620             # special case - version goes before the prefix
 621             libname = "%s.%s%s" % (root, version, ext)
 622         else:
 623             libname = "%s%s.%s" % (root, ext, version)
 624     return libname
 625 Build.BuildContext.make_libname = make_libname
 626
 627
 628 def get_tgt_list(bld):
 629     '''return a list of build objects for samba'''
 630
 631     targets = LOCAL_CACHE(bld, 'TARGET_TYPE')
 632
 633     # build a list of task generators we are interested in
 634     tgt_list = []
 635     for tgt in targets:
 636         type = targets[tgt]
 637         if not type in ['SUBSYSTEM', 'BUILTIN', 'MODULE', 'BINARY', 'LIBRARY', 'PLUGIN', 'ASN1', 'PYTHON']:
 638             continue
 639         t = bld.get_tgen_by_name(tgt)
 640         if t is None:
 641             Logs.error("Target %s of type %s has no task generator" % (tgt, type))
 642             sys.exit(1)
 643         tgt_list.append(t)
 644     return tgt_list
 645
 646 from waflib.Context import WSCRIPT_FILE
 647 def PROCESS_SEPARATE_RULE(self, rule):
 648     ''' cause waf to process additional script based on `rule'.
 649         You should have file named wscript_<stage>_rule in the current directory
 650         where stage is either 'configure' or 'build'
 651     '''
 652     stage = ''
 653     if isinstance(self, Configure.ConfigurationContext):
 654         stage = 'configure'
 655     elif isinstance(self, Build.BuildContext):
 656         stage = 'build'
 657     file_path = os.path.join(self.path.abspath(), WSCRIPT_FILE+'_'+stage+'_'+rule)
 658     node = self.root.find_node(file_path)
 659     if node:
 660         try:
 661             cache = self.recurse_cache
 662         except AttributeError:
 663             cache = self.recurse_cache = {}
 664         if node not in cache:
 665             cache[node] = True
 666             self.pre_recurse(node)
 667             try:
 668                 function_code = node.read('r', None)
 669                 exec(compile(function_code, node.abspath(), 'exec'), self.exec_dict)
 670             finally:
 671                 self.post_recurse(node)
 672
 673 Build.BuildContext.PROCESS_SEPARATE_RULE = PROCESS_SEPARATE_RULE
 674 ConfigurationContext.PROCESS_SEPARATE_RULE = PROCESS_SEPARATE_RULE
 675
 676 def AD_DC_BUILD_IS_ENABLED(self):
 677     if self.CONFIG_SET('AD_DC_BUILD_IS_ENABLED'):
 678         return True
 679     return False
 680
 681 Build.BuildContext.AD_DC_BUILD_IS_ENABLED = AD_DC_BUILD_IS_ENABLED
 682
 683 @feature('cprogram', 'cshlib', 'cstaticlib')
 684 @after('apply_lib_vars')
 685 @before('apply_obj_vars')
 686 def samba_before_apply_obj_vars(self):
 687     """before apply_obj_vars for uselib, this removes the standard paths"""
 688
 689     def is_standard_libpath(env, path):
 690         normalized_path = os.path.normpath(path)
 691         for _path in env.STANDARD_LIBPATH:
 692             if _path == normalized_path:
 693                 return True
 694         return False
 695
 696     v = self.env
 697
 698     for i in v['RPATH']:
 699         if is_standard_libpath(v, i):
 700             v['RPATH'].remove(i)
 701
 702     for i in v['LIBPATH']:
 703         if is_standard_libpath(v, i):
 704             v['LIBPATH'].remove(i)
 705
 706 # Samba options are mostly on by default (administrators and packagers
 707 # specify features to remove, not add), which is why default=True
 708
 709 def samba_add_onoff_option(opt, option, help=(), dest=None, default=True,
 710                            with_name="with", without_name="without"):
 711     if default is None:
 712         default_str = "auto"
 713     elif default is True:
 714         default_str = "yes"
 715     elif default is False:
 716         default_str = "no"
 717     else:
 718         default_str = str(default)
 719
 720     if help == ():
 721         help = ("Build with %s support (default=%s)" % (option, default_str))
 722     if dest is None:
 723         dest = "with_%s" % option.replace('-', '_')
 724
 725     with_val = "--%s-%s" % (with_name, option)
 726     without_val = "--%s-%s" % (without_name, option)
 727
 728     opt.add_option(with_val, help=help, action="store_true", dest=dest,
 729                    default=default)
 730     opt.add_option(without_val, help=SUPPRESS_HELP, action="store_false",
 731                    dest=dest)
 732 Options.OptionsContext.samba_add_onoff_option = samba_add_onoff_option