Switch to using a submodule for autowaf

2 files changed, 0 insertions, 791 deletions

diff --git a/waflib b/waflib
new file mode 160000
+Subproject 2314e236ca6e7d94a26c3c17091da0f25f5867f
diff --git a/waflib/Tools/ccroot.py b/waflib/Tools/ccroot.py
deleted file mode 100644
index 579d5b2..0000000
--- a/waflib/Tools/ccroot.py
+++ /dev/null
@@ -1,791 +0,0 @@
-#!/usr/bin/env python
-# encoding: utf-8
-# Thomas Nagy, 2005-2018 (ita)
-
-"""
-Classes and methods shared by tools providing support for C-like language such
-as C/C++/D/Assembly/Go (this support module is almost never used alone).
-"""
-
-import os, re
-from waflib import Task, Utils, Node, Errors, Logs
-from waflib.TaskGen import after_method, before_method, feature, taskgen_method, extension
-from waflib.Tools import c_aliases, c_preproc, c_config, c_osx, c_tests
-from waflib.Configure import conf
-
-SYSTEM_LIB_PATHS = ['/usr/lib64', '/usr/lib', '/usr/local/lib64', '/usr/local/lib']
-
-USELIB_VARS = Utils.defaultdict(set)
-"""
-Mapping for features to :py:class:`waflib.ConfigSet.ConfigSet` variables. See :py:func:`waflib.Tools.ccroot.propagate_uselib_vars`.
-"""
-
-USELIB_VARS['c']        = set(['INCLUDES', 'FRAMEWORKPATH', 'DEFINES', 'CPPFLAGS', 'CCDEPS', 'CFLAGS', 'ARCH'])
-USELIB_VARS['cxx']      = set(['INCLUDES', 'FRAMEWORKPATH', 'DEFINES', 'CPPFLAGS', 'CXXDEPS', 'CXXFLAGS', 'ARCH'])
-USELIB_VARS['d']        = set(['INCLUDES', 'DFLAGS'])
-USELIB_VARS['includes'] = set(['INCLUDES', 'FRAMEWORKPATH', 'ARCH'])
-
-USELIB_VARS['cprogram'] = USELIB_VARS['cxxprogram'] = set(['LIB', 'STLIB', 'LIBPATH', 'STLIBPATH', 'LINKFLAGS', 'RPATH', 'LINKDEPS', 'FRAMEWORK', 'FRAMEWORKPATH', 'ARCH', 'LDFLAGS'])
-USELIB_VARS['cshlib']   = USELIB_VARS['cxxshlib']   = set(['LIB', 'STLIB', 'LIBPATH', 'STLIBPATH', 'LINKFLAGS', 'RPATH', 'LINKDEPS', 'FRAMEWORK', 'FRAMEWORKPATH', 'ARCH', 'LDFLAGS'])
-USELIB_VARS['cstlib']   = USELIB_VARS['cxxstlib']   = set(['ARFLAGS', 'LINKDEPS'])
-
-USELIB_VARS['dprogram'] = set(['LIB', 'STLIB', 'LIBPATH', 'STLIBPATH', 'LINKFLAGS', 'RPATH', 'LINKDEPS'])
-USELIB_VARS['dshlib']   = set(['LIB', 'STLIB', 'LIBPATH', 'STLIBPATH', 'LINKFLAGS', 'RPATH', 'LINKDEPS'])
-USELIB_VARS['dstlib']   = set(['ARFLAGS', 'LINKDEPS'])
-
-USELIB_VARS['asm'] = set(['ASFLAGS'])
-
-# =================================================================================================
-
-@taskgen_method
-def create_compiled_task(self, name, node):
-	"""
-	Create the compilation task: c, cxx, asm, etc. The output node is created automatically (object file with a typical **.o** extension).
-	The task is appended to the list *compiled_tasks* which is then used by :py:func:`waflib.Tools.ccroot.apply_link`
-
-	:param name: name of the task class
-	:type name: string
-	:param node: the file to compile
-	:type node: :py:class:`waflib.Node.Node`
-	:return: The task created
-	:rtype: :py:class:`waflib.Task.Task`
-	"""
-	out = '%s.%d.o' % (node.name, self.idx)
-	task = self.create_task(name, node, node.parent.find_or_declare(out))
-	try:
-		self.compiled_tasks.append(task)
-	except AttributeError:
-		self.compiled_tasks = [task]
-	return task
-
-@taskgen_method
-def to_incnodes(self, inlst):
-	"""
-	Task generator method provided to convert a list of string/nodes into a list of includes folders.
-
-	The paths are assumed to be relative to the task generator path, except if they begin by **#**
-	in which case they are searched from the top-level directory (``bld.srcnode``).
-	The folders are simply assumed to be existing.
-
-	The node objects in the list are returned in the output list. The strings are converted
-	into node objects if possible. The node is searched from the source directory, and if a match is found,
-	the equivalent build directory is created and added to the returned list too. When a folder cannot be found, it is ignored.
-
-	:param inlst: list of folders
-	:type inlst: space-delimited string or a list of string/nodes
-	:rtype: list of :py:class:`waflib.Node.Node`
-	:return: list of include folders as nodes
-	"""
-	lst = []
-	seen = set()
-	for x in self.to_list(inlst):
-		if x in seen or not x:
-			continue
-		seen.add(x)
-
-		# with a real lot of targets, it is sometimes interesting to cache the results below
-		if isinstance(x, Node.Node):
-			lst.append(x)
-		else:
-			if os.path.isabs(x):
-				lst.append(self.bld.root.make_node(x) or x)
-			else:
-				if x[0] == '#':
-					p = self.bld.bldnode.make_node(x[1:])
-					v = self.bld.srcnode.make_node(x[1:])
-				else:
-					p = self.path.get_bld().make_node(x)
-					v = self.path.make_node(x)
-				if p.is_child_of(self.bld.bldnode):
-					p.mkdir()
-				lst.append(p)
-				lst.append(v)
-	return lst
-
-@feature('c', 'cxx', 'd', 'asm', 'fc', 'includes')
-@after_method('propagate_uselib_vars', 'process_source')
-def apply_incpaths(self):
-	"""
-	Task generator method that processes the attribute *includes*::
-
-		tg = bld(features='includes', includes='.')
-
-	The folders only need to be relative to the current directory, the equivalent build directory is
-	added automatically (for headers created in the build directory). This enables using a build directory
-	or not (``top == out``).
-
-	This method will add a list of nodes read by :py:func:`waflib.Tools.ccroot.to_incnodes` in ``tg.env.INCPATHS``,
-	and the list of include paths in ``tg.env.INCLUDES``.
-	"""
-
-	lst = self.to_incnodes(self.to_list(getattr(self, 'includes', [])) + self.env.INCLUDES)
-	self.includes_nodes = lst
-	cwd = self.get_cwd()
-	self.env.INCPATHS = [x.path_from(cwd) for x in lst]
-
-class link_task(Task.Task):
-	"""
-	Base class for all link tasks. A task generator is supposed to have at most one link task bound in the attribute *link_task*. See :py:func:`waflib.Tools.ccroot.apply_link`.
-
-	.. inheritance-diagram:: waflib.Tools.ccroot.stlink_task waflib.Tools.c.cprogram waflib.Tools.c.cshlib waflib.Tools.cxx.cxxstlib  waflib.Tools.cxx.cxxprogram waflib.Tools.cxx.cxxshlib waflib.Tools.d.dprogram waflib.Tools.d.dshlib waflib.Tools.d.dstlib waflib.Tools.ccroot.fake_shlib waflib.Tools.ccroot.fake_stlib waflib.Tools.asm.asmprogram waflib.Tools.asm.asmshlib waflib.Tools.asm.asmstlib
-	"""
-	color   = 'YELLOW'
-
-	weight  = 3
-	"""Try to process link tasks as early as possible"""
-
-	inst_to = None
-	"""Default installation path for the link task outputs, or None to disable"""
-
-	chmod   = Utils.O755
-	"""Default installation mode for the link task outputs"""
-
-	def add_target(self, target):
-		"""
-		Process the *target* attribute to add the platform-specific prefix/suffix such as *.so* or *.exe*.
-		The settings are retrieved from ``env.clsname_PATTERN``
-		"""
-		if isinstance(target, str):
-			base = self.generator.path
-			if target.startswith('#'):
-				# for those who like flat structures
-				target = target[1:]
-				base = self.generator.bld.bldnode
-
-			pattern = self.env[self.__class__.__name__ + '_PATTERN']
-			if not pattern:
-				pattern = '%s'
-			folder, name = os.path.split(target)
-
-			if self.__class__.__name__.find('shlib') > 0 and getattr(self.generator, 'vnum', None):
-				nums = self.generator.vnum.split('.')
-				if self.env.DEST_BINFMT == 'pe':
-					# include the version in the dll file name,
-					# the import lib file name stays unversioned.
-					name = name + '-' + nums[0]
-				elif self.env.DEST_OS == 'openbsd':
-					pattern = '%s.%s' % (pattern, nums[0])
-					if len(nums) >= 2:
-						pattern += '.%s' % nums[1]
-
-			if folder:
-				tmp = folder + os.sep + pattern % name
-			else:
-				tmp = pattern % name
-			target = base.find_or_declare(tmp)
-		self.set_outputs(target)
-
-	def exec_command(self, *k, **kw):
-		ret = super(link_task, self).exec_command(*k, **kw)
-		if not ret and self.env.DO_MANIFEST:
-			ret = self.exec_mf()
-		return ret
-
-	def exec_mf(self):
-		"""
-		Create manifest files for VS-like compilers (msvc, ifort, ...)
-		"""
-		if not self.env.MT:
-			return 0
-
-		manifest = None
-		for out_node in self.outputs:
-			if out_node.name.endswith('.manifest'):
-				manifest = out_node.abspath()
-				break
-		else:
-			# Should never get here.  If we do, it means the manifest file was
-			# never added to the outputs list, thus we don't have a manifest file
-			# to embed, so we just return.
-			return 0
-
-		# embedding mode. Different for EXE's and DLL's.
-		# see: http://msdn2.microsoft.com/en-us/library/ms235591(VS.80).aspx
-		mode = ''
-		for x in Utils.to_list(self.generator.features):
-			if x in ('cprogram', 'cxxprogram', 'fcprogram', 'fcprogram_test'):
-				mode = 1
-			elif x in ('cshlib', 'cxxshlib', 'fcshlib'):
-				mode = 2
-
-		Logs.debug('msvc: embedding manifest in mode %r', mode)
-
-		lst = [] + self.env.MT
-		lst.extend(Utils.to_list(self.env.MTFLAGS))
-		lst.extend(['-manifest', manifest])
-		lst.append('-outputresource:%s;%s' % (self.outputs[0].abspath(), mode))
-
-		return super(link_task, self).exec_command(lst)
-
-class stlink_task(link_task):
-	"""
-	Base for static link tasks, which use *ar* most of the time.
-	The target is always removed before being written.
-	"""
-	run_str = '${AR} ${ARFLAGS} ${AR_TGT_F}${TGT} ${AR_SRC_F}${SRC}'
-
-	chmod   = Utils.O644
-	"""Default installation mode for the static libraries"""
-
-def rm_tgt(cls):
-	old = cls.run
-	def wrap(self):
-		try:
-			os.remove(self.outputs[0].abspath())
-		except OSError:
-			pass
-		return old(self)
-	setattr(cls, 'run', wrap)
-rm_tgt(stlink_task)
-
-@feature('skip_stlib_link_deps')
-@before_method('process_use')
-def apply_skip_stlib_link_deps(self):
-	"""
-	This enables an optimization in the :py:func:wafilb.Tools.ccroot.processes_use: method that skips dependency and
-	link flag optimizations for targets that generate static libraries (via the :py:class:Tools.ccroot.stlink_task task).
-	The actual behavior is implemented in :py:func:wafilb.Tools.ccroot.processes_use: method so this feature only tells waf
-	to enable the new behavior.
-	"""
-	self.env.SKIP_STLIB_LINK_DEPS = True
-
-@feature('c', 'cxx', 'd', 'fc', 'asm')
-@after_method('process_source')
-def apply_link(self):
-	"""
-	Collect the tasks stored in ``compiled_tasks`` (created by :py:func:`waflib.Tools.ccroot.create_compiled_task`), and
-	use the outputs for a new instance of :py:class:`waflib.Tools.ccroot.link_task`. The class to use is the first link task
-	matching a name from the attribute *features*, for example::
-
-			def build(bld):
-				tg = bld(features='cxx cxxprogram cprogram', source='main.c', target='app')
-
-	will create the task ``tg.link_task`` as a new instance of :py:class:`waflib.Tools.cxx.cxxprogram`
-	"""
-
-	for x in self.features:
-		if x == 'cprogram' and 'cxx' in self.features: # limited compat
-			x = 'cxxprogram'
-		elif x == 'cshlib' and 'cxx' in self.features:
-			x = 'cxxshlib'
-
-		if x in Task.classes:
-			if issubclass(Task.classes[x], link_task):
-				link = x
-				break
-	else:
-		return
-
-	objs = [t.outputs[0] for t in getattr(self, 'compiled_tasks', [])]
-	self.link_task = self.create_task(link, objs)
-	self.link_task.add_target(self.target)
-
-	# remember that the install paths are given by the task generators
-	try:
-		inst_to = self.install_path
-	except AttributeError:
-		inst_to = self.link_task.inst_to
-	if inst_to:
-		# install a copy of the node list we have at this moment (implib not added)
-		self.install_task = self.add_install_files(
-			install_to=inst_to, install_from=self.link_task.outputs[:],
-			chmod=self.link_task.chmod, task=self.link_task)
-
-@taskgen_method
-def use_rec(self, name, **kw):
-	"""
-	Processes the ``use`` keyword recursively. This method is kind of private and only meant to be used from ``process_use``
-	"""
-
-	if name in self.tmp_use_not or name in self.tmp_use_seen:
-		return
-
-	try:
-		y = self.bld.get_tgen_by_name(name)
-	except Errors.WafError:
-		self.uselib.append(name)
-		self.tmp_use_not.add(name)
-		return
-
-	self.tmp_use_seen.append(name)
-	y.post()
-
-	# bind temporary attributes on the task generator
-	y.tmp_use_objects = objects = kw.get('objects', True)
-	y.tmp_use_stlib   = stlib   = kw.get('stlib', True)
-	try:
-		link_task = y.link_task
-	except AttributeError:
-		y.tmp_use_var = ''
-	else:
-		objects = False
-		if not isinstance(link_task, stlink_task):
-			stlib = False
-			y.tmp_use_var = 'LIB'
-		else:
-			y.tmp_use_var = 'STLIB'
-
-	p = self.tmp_use_prec
-	for x in self.to_list(getattr(y, 'use', [])):
-		if self.env["STLIB_" + x]:
-			continue
-		try:
-			p[x].append(name)
-		except KeyError:
-			p[x] = [name]
-		self.use_rec(x, objects=objects, stlib=stlib)
-
-@feature('c', 'cxx', 'd', 'use', 'fc')
-@before_method('apply_incpaths', 'propagate_uselib_vars')
-@after_method('apply_link', 'process_source')
-def process_use(self):
-	"""
-	Process the ``use`` attribute which contains a list of task generator names::
-
-		def build(bld):
-			bld.shlib(source='a.c', target='lib1')
-			bld.program(source='main.c', target='app', use='lib1')
-
-	See :py:func:`waflib.Tools.ccroot.use_rec`.
-	"""
-
-	use_not = self.tmp_use_not = set()
-	self.tmp_use_seen = [] # we would like an ordered set
-	use_prec = self.tmp_use_prec = {}
-	self.uselib = self.to_list(getattr(self, 'uselib', []))
-	self.includes = self.to_list(getattr(self, 'includes', []))
-	names = self.to_list(getattr(self, 'use', []))
-
-	for x in names:
-		self.use_rec(x)
-
-	for x in use_not:
-		if x in use_prec:
-			del use_prec[x]
-
-	# topological sort
-	out = self.tmp_use_sorted = []
-	tmp = []
-	for x in self.tmp_use_seen:
-		for k in use_prec.values():
-			if x in k:
-				break
-		else:
-			tmp.append(x)
-
-	while tmp:
-		e = tmp.pop()
-		out.append(e)
-		try:
-			nlst = use_prec[e]
-		except KeyError:
-			pass
-		else:
-			del use_prec[e]
-			for x in nlst:
-				for y in use_prec:
-					if x in use_prec[y]:
-						break
-				else:
-					tmp.append(x)
-	if use_prec:
-		raise Errors.WafError('Cycle detected in the use processing %r' % use_prec)
-	out.reverse()
-
-	link_task = getattr(self, 'link_task', None)
-	for x in out:
-		y = self.bld.get_tgen_by_name(x)
-		var = y.tmp_use_var
-		if var and link_task:
-			if self.env.SKIP_STLIB_LINK_DEPS and isinstance(link_task, stlink_task):
-				# If the skip_stlib_link_deps feature is enabled then we should
-				# avoid adding lib deps to the stlink_task instance.
-				pass
-			elif var == 'LIB' or y.tmp_use_stlib or x in names:
-				self.env.append_value(var, [y.target[y.target.rfind(os.sep) + 1:]])
-				self.link_task.dep_nodes.extend(y.link_task.outputs)
-				tmp_path = y.link_task.outputs[0].parent.path_from(self.get_cwd())
-				self.env.append_unique(var + 'PATH', [tmp_path])
-		else:
-			if y.tmp_use_objects:
-				self.add_objects_from_tgen(y)
-
-		if getattr(y, 'export_includes', None):
-			# self.includes may come from a global variable #2035
-			self.includes = self.includes + y.to_incnodes(y.export_includes)
-
-		if getattr(y, 'export_defines', None):
-			self.env.append_value('DEFINES', self.to_list(y.export_defines))
-
-
-	# and finally, add the use variables (no recursion needed)
-	for x in names:
-		try:
-			y = self.bld.get_tgen_by_name(x)
-		except Errors.WafError:
-			if not self.env['STLIB_' + x] and not x in self.uselib:
-				self.uselib.append(x)
-		else:
-			for k in self.to_list(getattr(y, 'use', [])):
-				if not self.env['STLIB_' + k] and not k in self.uselib:
-					self.uselib.append(k)
-
-@taskgen_method
-def accept_node_to_link(self, node):
-	"""
-	PRIVATE INTERNAL USE ONLY
-	"""
-	return not node.name.endswith('.pdb')
-
-@taskgen_method
-def add_objects_from_tgen(self, tg):
-	"""
-	Add the objects from the depending compiled tasks as link task inputs.
-
-	Some objects are filtered: for instance, .pdb files are added
-	to the compiled tasks but not to the link tasks (to avoid errors)
-	PRIVATE INTERNAL USE ONLY
-	"""
-	try:
-		link_task = self.link_task
-	except AttributeError:
-		pass
-	else:
-		for tsk in getattr(tg, 'compiled_tasks', []):
-			for x in tsk.outputs:
-				if self.accept_node_to_link(x):
-					link_task.inputs.append(x)
-
-@taskgen_method
-def get_uselib_vars(self):
-	"""
-	:return: the *uselib* variables associated to the *features* attribute (see :py:attr:`waflib.Tools.ccroot.USELIB_VARS`)
-	:rtype: list of string
-	"""
-	_vars = set()
-	for x in self.features:
-		if x in USELIB_VARS:
-			_vars |= USELIB_VARS[x]
-	return _vars
-
-@feature('c', 'cxx', 'd', 'fc', 'javac', 'cs', 'uselib', 'asm')
-@after_method('process_use')
-def propagate_uselib_vars(self):
-	"""
-	Process uselib variables for adding flags. For example, the following target::
-
-		def build(bld):
-			bld.env.AFLAGS_aaa = ['bar']
-			from waflib.Tools.ccroot import USELIB_VARS
-			USELIB_VARS['aaa'] = ['AFLAGS']
-
-			tg = bld(features='aaa', aflags='test')
-
-	The *aflags* attribute will be processed and this method will set::
-
-			tg.env.AFLAGS = ['bar', 'test']
-	"""
-	_vars = self.get_uselib_vars()
-	env = self.env
-	app = env.append_value
-	feature_uselib = self.features + self.to_list(getattr(self, 'uselib', []))
-	for var in _vars:
-		y = var.lower()
-		val = getattr(self, y, [])
-		if val:
-			app(var, self.to_list(val))
-
-		for x in feature_uselib:
-			val = env['%s_%s' % (var, x)]
-			if val:
-				app(var, val)
-
-# ============ the code above must not know anything about import libs ==========
-
-@feature('cshlib', 'cxxshlib', 'fcshlib')
-@after_method('apply_link')
-def apply_implib(self):
-	"""
-	Handle dlls and their import libs on Windows-like systems.
-
-	A ``.dll.a`` file called *import library* is generated.
-	It must be installed as it is required for linking the library.
-	"""
-	if not self.env.DEST_BINFMT == 'pe':
-		return
-
-	dll = self.link_task.outputs[0]
-	if isinstance(self.target, Node.Node):
-		name = self.target.name
-	else:
-		name = os.path.split(self.target)[1]
-	implib = self.env.implib_PATTERN % name
-	implib = dll.parent.find_or_declare(implib)
-	self.env.append_value('LINKFLAGS', self.env.IMPLIB_ST % implib.bldpath())
-	self.link_task.outputs.append(implib)
-
-	if getattr(self, 'defs', None) and self.env.DEST_BINFMT == 'pe':
-		node = self.path.find_resource(self.defs)
-		if not node:
-			raise Errors.WafError('invalid def file %r' % self.defs)
-		if self.env.def_PATTERN:
-			self.env.append_value('LINKFLAGS', self.env.def_PATTERN % node.path_from(self.get_cwd()))
-			self.link_task.dep_nodes.append(node)
-		else:
-			# gcc for windows takes *.def file as input without any special flag
-			self.link_task.inputs.append(node)
-
-	# where to put the import library
-	if getattr(self, 'install_task', None):
-		try:
-			# user has given a specific installation path for the import library
-			inst_to = self.install_path_implib
-		except AttributeError:
-			try:
-				# user has given an installation path for the main library, put the import library in it
-				inst_to = self.install_path
-			except AttributeError:
-				# else, put the library in BINDIR and the import library in LIBDIR
-				inst_to = '${IMPLIBDIR}'
-				self.install_task.install_to = '${BINDIR}'
-				if not self.env.IMPLIBDIR:
-					self.env.IMPLIBDIR = self.env.LIBDIR
-		self.implib_install_task = self.add_install_files(install_to=inst_to, install_from=implib,
-			chmod=self.link_task.chmod, task=self.link_task)
-
-# ============ the code above must not know anything about vnum processing on unix platforms =========
-
-re_vnum = re.compile('^([1-9]\\d*|0)([.]([1-9]\\d*|0)){0,2}?$')
-@feature('cshlib', 'cxxshlib', 'dshlib', 'fcshlib', 'vnum')
-@after_method('apply_link', 'propagate_uselib_vars')
-def apply_vnum(self):
-	"""
-	Enforce version numbering on shared libraries. The valid version numbers must have either zero or two dots::
-
-		def build(bld):
-			bld.shlib(source='a.c', target='foo', vnum='14.15.16')
-
-	In this example on Linux platform, ``libfoo.so`` is installed as ``libfoo.so.14.15.16``, and the following symbolic links are created:
-
-	* ``libfoo.so    → libfoo.so.14.15.16``
-	* ``libfoo.so.14 → libfoo.so.14.15.16``
-
-	By default, the library will be assigned SONAME ``libfoo.so.14``, effectively declaring ABI compatibility between all minor and patch releases for the major version of the library.  When necessary, the compatibility can be explicitly defined using `cnum` parameter:
-
-		def build(bld):
-			bld.shlib(source='a.c', target='foo', vnum='14.15.16', cnum='14.15')
-
-	In this case, the assigned SONAME will be ``libfoo.so.14.15`` with ABI compatibility only between path releases for a specific major and minor version of the library.
-
-	On OS X platform, install-name parameter will follow the above logic for SONAME with exception that it also specifies an absolute path (based on install_path) of the library.
-	"""
-	if not getattr(self, 'vnum', '') or os.name != 'posix' or self.env.DEST_BINFMT not in ('elf', 'mac-o'):
-		return
-
-	link = self.link_task
-	if not re_vnum.match(self.vnum):
-		raise Errors.WafError('Invalid vnum %r for target %r' % (self.vnum, getattr(self, 'name', self)))
-	nums = self.vnum.split('.')
-	node = link.outputs[0]
-
-	cnum = getattr(self, 'cnum', str(nums[0]))
-	cnums = cnum.split('.')
-	if len(cnums)>len(nums) or nums[0:len(cnums)] != cnums:
-		raise Errors.WafError('invalid compatibility version %s' % cnum)
-
-	libname = node.name
-	if libname.endswith('.dylib'):
-		name3 = libname.replace('.dylib', '.%s.dylib' % self.vnum)
-		name2 = libname.replace('.dylib', '.%s.dylib' % cnum)
-	else:
-		name3 = libname + '.' + self.vnum
-		name2 = libname + '.' + cnum
-
-	# add the so name for the ld linker - to disable, just unset env.SONAME_ST
-	if self.env.SONAME_ST:
-		v = self.env.SONAME_ST % name2
-		self.env.append_value('LINKFLAGS', v.split())
-
-	# the following task is just to enable execution from the build dir :-/
-	if self.env.DEST_OS != 'openbsd':
-		outs = [node.parent.make_node(name3)]
-		if name2 != name3:
-			outs.append(node.parent.make_node(name2))
-		self.create_task('vnum', node, outs)
-
-	if getattr(self, 'install_task', None):
-		self.install_task.hasrun = Task.SKIPPED
-		self.install_task.no_errcheck_out = True
-		path = self.install_task.install_to
-		if self.env.DEST_OS == 'openbsd':
-			libname = self.link_task.outputs[0].name
-			t1 = self.add_install_as(install_to='%s/%s' % (path, libname), install_from=node, chmod=self.link_task.chmod)
-			self.vnum_install_task = (t1,)
-		else:
-			t1 = self.add_install_as(install_to=path + os.sep + name3, install_from=node, chmod=self.link_task.chmod)
-			t3 = self.add_symlink_as(install_to=path + os.sep + libname, install_from=name3)
-			if name2 != name3:
-				t2 = self.add_symlink_as(install_to=path + os.sep + name2, install_from=name3)
-				self.vnum_install_task = (t1, t2, t3)
-			else:
-				self.vnum_install_task = (t1, t3)
-
-	if '-dynamiclib' in self.env.LINKFLAGS:
-		# this requires after(propagate_uselib_vars)
-		try:
-			inst_to = self.install_path
-		except AttributeError:
-			inst_to = self.link_task.inst_to
-		if inst_to:
-			p = Utils.subst_vars(inst_to, self.env)
-			path = os.path.join(p, name2)
-			self.env.append_value('LINKFLAGS', ['-install_name', path])
-			self.env.append_value('LINKFLAGS', '-Wl,-compatibility_version,%s' % cnum)
-			self.env.append_value('LINKFLAGS', '-Wl,-current_version,%s' % self.vnum)
-
-class vnum(Task.Task):
-	"""
-	Create the symbolic links for a versioned shared library. Instances are created by :py:func:`waflib.Tools.ccroot.apply_vnum`
-	"""
-	color = 'CYAN'
-	ext_in = ['.bin']
-	def keyword(self):
-		return 'Symlinking'
-	def run(self):
-		for x in self.outputs:
-			path = x.abspath()
-			try:
-				os.remove(path)
-			except OSError:
-				pass
-
-			try:
-				os.symlink(self.inputs[0].name, path)
-			except OSError:
-				return 1
-
-class fake_shlib(link_task):
-	"""
-	Task used for reading a system library and adding the dependency on it
-	"""
-	def runnable_status(self):
-		for t in self.run_after:
-			if not t.hasrun:
-				return Task.ASK_LATER
-		return Task.SKIP_ME
-
-class fake_stlib(stlink_task):
-	"""
-	Task used for reading a system library and adding the dependency on it
-	"""
-	def runnable_status(self):
-		for t in self.run_after:
-			if not t.hasrun:
-				return Task.ASK_LATER
-		return Task.SKIP_ME
-
-@conf
-def read_shlib(self, name, paths=[], export_includes=[], export_defines=[]):
-	"""
-	Read a system shared library, enabling its use as a local library. Will trigger a rebuild if the file changes::
-
-		def build(bld):
-			bld.read_shlib('m')
-			bld.program(source='main.c', use='m')
-	"""
-	return self(name=name, features='fake_lib', lib_paths=paths, lib_type='shlib', export_includes=export_includes, export_defines=export_defines)
-
-@conf
-def read_stlib(self, name, paths=[], export_includes=[], export_defines=[]):
-	"""
-	Read a system static library, enabling a use as a local library. Will trigger a rebuild if the file changes.
-	"""
-	return self(name=name, features='fake_lib', lib_paths=paths, lib_type='stlib', export_includes=export_includes, export_defines=export_defines)
-
-lib_patterns = {
-	'shlib' : ['lib%s.so', '%s.so', 'lib%s.dylib', 'lib%s.dll', '%s.dll'],
-	'stlib' : ['lib%s.a', '%s.a', 'lib%s.dll', '%s.dll', 'lib%s.lib', '%s.lib'],
-}
-
-@feature('fake_lib')
-def process_lib(self):
-	"""
-	Find the location of a foreign library. Used by :py:class:`waflib.Tools.ccroot.read_shlib` and :py:class:`waflib.Tools.ccroot.read_stlib`.
-	"""
-	node = None
-
-	names = [x % self.name for x in lib_patterns[self.lib_type]]
-	for x in self.lib_paths + [self.path] + SYSTEM_LIB_PATHS:
-		if not isinstance(x, Node.Node):
-			x = self.bld.root.find_node(x) or self.path.find_node(x)
-			if not x:
-				continue
-
-		for y in names:
-			node = x.find_node(y)
-			if node:
-				try:
-					Utils.h_file(node.abspath())
-				except EnvironmentError:
-					raise ValueError('Could not read %r' % y)
-				break
-		else:
-			continue
-		break
-	else:
-		raise Errors.WafError('could not find library %r' % self.name)
-	self.link_task = self.create_task('fake_%s' % self.lib_type, [], [node])
-	self.target = self.name
-
-
-class fake_o(Task.Task):
-	def runnable_status(self):
-		return Task.SKIP_ME
-
-@extension('.o', '.obj')
-def add_those_o_files(self, node):
-	tsk = self.create_task('fake_o', [], node)
-	try:
-		self.compiled_tasks.append(tsk)
-	except AttributeError:
-		self.compiled_tasks = [tsk]
-
-@feature('fake_obj')
-@before_method('process_source')
-def process_objs(self):
-	"""
-	Puts object files in the task generator outputs
-	"""
-	for node in self.to_nodes(self.source):
-		self.add_those_o_files(node)
-	self.source = []
-
-@conf
-def read_object(self, obj):
-	"""
-	Read an object file, enabling injection in libs/programs. Will trigger a rebuild if the file changes.
-
-	:param obj: object file path, as string or Node
-	"""
-	if not isinstance(obj, self.path.__class__):
-		obj = self.path.find_resource(obj)
-	return self(features='fake_obj', source=obj, name=obj.name)
-
-@feature('cxxprogram', 'cprogram')
-@after_method('apply_link', 'process_use')
-def set_full_paths_hpux(self):
-	"""
-	On hp-ux, extend the libpaths and static library paths to absolute paths
-	"""
-	if self.env.DEST_OS != 'hp-ux':
-		return
-	base = self.bld.bldnode.abspath()
-	for var in ['LIBPATH', 'STLIBPATH']:
-		lst = []
-		for x in self.env[var]:
-			if x.startswith('/'):
-				lst.append(x)
-			else:
-				lst.append(os.path.normpath(os.path.join(base, x)))
-		self.env[var] = lst
-