Squashed 'waflib/' changes from 915dcb1..e7a29b6

e7a29b6 Upgrade to waf 2.0.15
8280f9d Add command for running executables from the build directory
8073c1a Make make_simple_dox() safe in case of exception
70d03b8 Avoid use of global counter hacks for configuration display
b7d689a Rewrite test framework
94deadf Automatically add options and move add_flags() to options context
f4259ee Reduce system include path noise
927b608 Automatically display configuration header
c44b8f3 Set line justification from a constant in the wscript
a48e26f Automatically detect if wscript has a test hook
ef66724 Save runtime variables in the environment
63bcbcd Clean up TestContext
b1d9505 Add ExecutionContext for setting runtime environment
387c1df Add show_diff() and test_file_equals() utilities
29d4d29 Fix in-tree library paths
9fde01f Add custom configuration context
6d3612f Add lib_path_name constant

git-subtree-dir: waflib
git-subtree-split: e7a29b6b9b2f842314244c23c14d8f8f560904e1

1 files changed, 695 insertions, 0 deletions

diff --git a/extras/qt4.py b/extras/qt4.py
new file mode 100644
index 0000000..d19a4dd
--- /dev/null
+++ b/extras/qt4.py
@@ -0,0 +1,695 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2006-2010 (ita)
+
+"""
+
+Tool Description
+================
+
+This tool helps with finding Qt4 tools and libraries,
+and also provides syntactic sugar for using Qt4 tools.
+
+The following snippet illustrates the tool usage::
+
+	def options(opt):
+		opt.load('compiler_cxx qt4')
+
+	def configure(conf):
+		conf.load('compiler_cxx qt4')
+
+	def build(bld):
+		bld(
+			features = 'qt4 cxx cxxprogram',
+			uselib   = 'QTCORE QTGUI QTOPENGL QTSVG',
+			source   = 'main.cpp textures.qrc aboutDialog.ui',
+			target   = 'window',
+		)
+
+Here, the UI description and resource files will be processed
+to generate code.
+
+Usage
+=====
+
+Load the "qt4" tool.
+
+You also need to edit your sources accordingly:
+
+- the normal way of doing things is to have your C++ files
+  include the .moc file.
+  This is regarded as the best practice (and provides much faster
+  compilations).
+  It also implies that the include paths have beenset properly.
+
+- to have the include paths added automatically, use the following::
+
+     from waflib.TaskGen import feature, before_method, after_method
+     @feature('cxx')
+     @after_method('process_source')
+     @before_method('apply_incpaths')
+     def add_includes_paths(self):
+        incs = set(self.to_list(getattr(self, 'includes', '')))
+        for x in self.compiled_tasks:
+            incs.add(x.inputs[0].parent.path_from(self.path))
+        self.includes = sorted(incs)
+
+Note: another tool provides Qt processing that does not require
+.moc includes, see 'playground/slow_qt/'.
+
+A few options (--qt{dir,bin,...}) and environment variables
+(QT4_{ROOT,DIR,MOC,UIC,XCOMPILE}) allow finer tuning of the tool,
+tool path selection, etc; please read the source for more info.
+
+"""
+
+try:
+	from xml.sax import make_parser
+	from xml.sax.handler import ContentHandler
+except ImportError:
+	has_xml = False
+	ContentHandler = object
+else:
+	has_xml = True
+
+import os, sys
+from waflib.Tools import cxx
+from waflib import Task, Utils, Options, Errors, Context
+from waflib.TaskGen import feature, after_method, extension
+from waflib.Configure import conf
+from waflib import Logs
+
+MOC_H = ['.h', '.hpp', '.hxx', '.hh']
+"""
+File extensions associated to the .moc files
+"""
+
+EXT_RCC = ['.qrc']
+"""
+File extension for the resource (.qrc) files
+"""
+
+EXT_UI  = ['.ui']
+"""
+File extension for the user interface (.ui) files
+"""
+
+EXT_QT4 = ['.cpp', '.cc', '.cxx', '.C']
+"""
+File extensions of C++ files that may require a .moc processing
+"""
+
+QT4_LIBS = "QtCore QtGui QtUiTools QtNetwork QtOpenGL QtSql QtSvg QtTest QtXml QtXmlPatterns QtWebKit Qt3Support QtHelp QtScript QtDeclarative QtDesigner"
+
+class qxx(Task.classes['cxx']):
+	"""
+	Each C++ file can have zero or several .moc files to create.
+	They are known only when the files are scanned (preprocessor)
+	To avoid scanning the c++ files each time (parsing C/C++), the results
+	are retrieved from the task cache (bld.node_deps/bld.raw_deps).
+	The moc tasks are also created *dynamically* during the build.
+	"""
+
+	def __init__(self, *k, **kw):
+		Task.Task.__init__(self, *k, **kw)
+		self.moc_done = 0
+
+	def runnable_status(self):
+		"""
+		Compute the task signature to make sure the scanner was executed. Create the
+		moc tasks by using :py:meth:`waflib.Tools.qt4.qxx.add_moc_tasks` (if necessary),
+		then postpone the task execution (there is no need to recompute the task signature).
+		"""
+		if self.moc_done:
+			return Task.Task.runnable_status(self)
+		else:
+			for t in self.run_after:
+				if not t.hasrun:
+					return Task.ASK_LATER
+			self.add_moc_tasks()
+			return Task.Task.runnable_status(self)
+
+	def create_moc_task(self, h_node, m_node):
+		"""
+		If several libraries use the same classes, it is possible that moc will run several times (Issue 1318)
+		It is not possible to change the file names, but we can assume that the moc transformation will be identical,
+		and the moc tasks can be shared in a global cache.
+
+		The defines passed to moc will then depend on task generator order. If this is not acceptable, then
+		use the tool slow_qt4 instead (and enjoy the slow builds... :-( )
+		"""
+		try:
+			moc_cache = self.generator.bld.moc_cache
+		except AttributeError:
+			moc_cache = self.generator.bld.moc_cache = {}
+
+		try:
+			return moc_cache[h_node]
+		except KeyError:
+			tsk = moc_cache[h_node] = Task.classes['moc'](env=self.env, generator=self.generator)
+			tsk.set_inputs(h_node)
+			tsk.set_outputs(m_node)
+
+			if self.generator:
+				self.generator.tasks.append(tsk)
+
+			# direct injection in the build phase (safe because called from the main thread)
+			gen = self.generator.bld.producer
+			gen.outstanding.append(tsk)
+			gen.total += 1
+
+			return tsk
+
+	def moc_h_ext(self):
+		ext = []
+		try:
+			ext = Options.options.qt_header_ext.split()
+		except AttributeError:
+			pass
+		if not ext:
+			ext = MOC_H
+		return ext
+
+	def add_moc_tasks(self):
+		"""
+		Create the moc tasks by looking in ``bld.raw_deps[self.uid()]``
+		"""
+		node = self.inputs[0]
+		bld = self.generator.bld
+
+		try:
+			# compute the signature once to know if there is a moc file to create
+			self.signature()
+		except KeyError:
+			# the moc file may be referenced somewhere else
+			pass
+		else:
+			# remove the signature, it must be recomputed with the moc task
+			delattr(self, 'cache_sig')
+
+		include_nodes = [node.parent] + self.generator.includes_nodes
+
+		moctasks = []
+		mocfiles = set()
+		for d in bld.raw_deps.get(self.uid(), []):
+			if not d.endswith('.moc'):
+				continue
+
+			# process that base.moc only once
+			if d in mocfiles:
+				continue
+			mocfiles.add(d)
+
+			# find the source associated with the moc file
+			h_node = None
+
+			base2 = d[:-4]
+			for x in include_nodes:
+				for e in self.moc_h_ext():
+					h_node = x.find_node(base2 + e)
+					if h_node:
+						break
+				if h_node:
+					m_node = h_node.change_ext('.moc')
+					break
+			else:
+				# foo.cpp -> foo.cpp.moc
+				for k in EXT_QT4:
+					if base2.endswith(k):
+						for x in include_nodes:
+							h_node = x.find_node(base2)
+							if h_node:
+								break
+						if h_node:
+							m_node = h_node.change_ext(k + '.moc')
+							break
+
+			if not h_node:
+				raise Errors.WafError('No source found for %r which is a moc file' % d)
+
+			# create the moc task
+			task = self.create_moc_task(h_node, m_node)
+			moctasks.append(task)
+
+		# simple scheduler dependency: run the moc task before others
+		self.run_after.update(set(moctasks))
+		self.moc_done = 1
+
+class trans_update(Task.Task):
+	"""Update a .ts files from a list of C++ files"""
+	run_str = '${QT_LUPDATE} ${SRC} -ts ${TGT}'
+	color   = 'BLUE'
+
+class XMLHandler(ContentHandler):
+	"""
+	Parser for *.qrc* files
+	"""
+	def __init__(self):
+		self.buf = []
+		self.files = []
+	def startElement(self, name, attrs):
+		if name == 'file':
+			self.buf = []
+	def endElement(self, name):
+		if name == 'file':
+			self.files.append(str(''.join(self.buf)))
+	def characters(self, cars):
+		self.buf.append(cars)
+
+@extension(*EXT_RCC)
+def create_rcc_task(self, node):
+	"Create rcc and cxx tasks for *.qrc* files"
+	rcnode = node.change_ext('_rc.cpp')
+	self.create_task('rcc', node, rcnode)
+	cpptask = self.create_task('cxx', rcnode, rcnode.change_ext('.o'))
+	try:
+		self.compiled_tasks.append(cpptask)
+	except AttributeError:
+		self.compiled_tasks = [cpptask]
+	return cpptask
+
+@extension(*EXT_UI)
+def create_uic_task(self, node):
+	"hook for uic tasks"
+	uictask = self.create_task('ui4', node)
+	uictask.outputs = [self.path.find_or_declare(self.env['ui_PATTERN'] % node.name[:-3])]
+
+@extension('.ts')
+def add_lang(self, node):
+	"""add all the .ts file into self.lang"""
+	self.lang = self.to_list(getattr(self, 'lang', [])) + [node]
+
+@feature('qt4')
+@after_method('apply_link')
+def apply_qt4(self):
+	"""
+	Add MOC_FLAGS which may be necessary for moc::
+
+		def build(bld):
+			bld.program(features='qt4', source='main.cpp', target='app', use='QTCORE')
+
+	The additional parameters are:
+
+	:param lang: list of translation files (\\*.ts) to process
+	:type lang: list of :py:class:`waflib.Node.Node` or string without the .ts extension
+	:param update: whether to process the C++ files to update the \\*.ts files (use **waf --translate**)
+	:type update: bool
+	:param langname: if given, transform the \\*.ts files into a .qrc files to include in the binary file
+	:type langname: :py:class:`waflib.Node.Node` or string without the .qrc extension
+	"""
+	if getattr(self, 'lang', None):
+		qmtasks = []
+		for x in self.to_list(self.lang):
+			if isinstance(x, str):
+				x = self.path.find_resource(x + '.ts')
+			qmtasks.append(self.create_task('ts2qm', x, x.change_ext('.qm')))
+
+		if getattr(self, 'update', None) and Options.options.trans_qt4:
+			cxxnodes = [a.inputs[0] for a in self.compiled_tasks] + [
+				a.inputs[0] for a in self.tasks if getattr(a, 'inputs', None) and a.inputs[0].name.endswith('.ui')]
+			for x in qmtasks:
+				self.create_task('trans_update', cxxnodes, x.inputs)
+
+		if getattr(self, 'langname', None):
+			qmnodes = [x.outputs[0] for x in qmtasks]
+			rcnode = self.langname
+			if isinstance(rcnode, str):
+				rcnode = self.path.find_or_declare(rcnode + '.qrc')
+			t = self.create_task('qm2rcc', qmnodes, rcnode)
+			k = create_rcc_task(self, t.outputs[0])
+			self.link_task.inputs.append(k.outputs[0])
+
+	lst = []
+	for flag in self.to_list(self.env['CXXFLAGS']):
+		if len(flag) < 2:
+			continue
+		f = flag[0:2]
+		if f in ('-D', '-I', '/D', '/I'):
+			if (f[0] == '/'):
+				lst.append('-' + flag[1:])
+			else:
+				lst.append(flag)
+	self.env.append_value('MOC_FLAGS', lst)
+
+@extension(*EXT_QT4)
+def cxx_hook(self, node):
+	"""
+	Re-map C++ file extensions to the :py:class:`waflib.Tools.qt4.qxx` task.
+	"""
+	return self.create_compiled_task('qxx', node)
+
+class rcc(Task.Task):
+	"""
+	Process *.qrc* files
+	"""
+	color   = 'BLUE'
+	run_str = '${QT_RCC} -name ${tsk.rcname()} ${SRC[0].abspath()} ${RCC_ST} -o ${TGT}'
+	ext_out = ['.h']
+
+	def rcname(self):
+		return os.path.splitext(self.inputs[0].name)[0]
+
+	def scan(self):
+		"""Parse the *.qrc* files"""
+		if not has_xml:
+			Logs.error('no xml support was found, the rcc dependencies will be incomplete!')
+			return ([], [])
+
+		parser = make_parser()
+		curHandler = XMLHandler()
+		parser.setContentHandler(curHandler)
+		fi = open(self.inputs[0].abspath(), 'r')
+		try:
+			parser.parse(fi)
+		finally:
+			fi.close()
+
+		nodes = []
+		names = []
+		root = self.inputs[0].parent
+		for x in curHandler.files:
+			nd = root.find_resource(x)
+			if nd:
+				nodes.append(nd)
+			else:
+				names.append(x)
+		return (nodes, names)
+
+class moc(Task.Task):
+	"""
+	Create *.moc* files
+	"""
+	color   = 'BLUE'
+	run_str = '${QT_MOC} ${MOC_FLAGS} ${MOCCPPPATH_ST:INCPATHS} ${MOCDEFINES_ST:DEFINES} ${SRC} ${MOC_ST} ${TGT}'
+	def keyword(self):
+		return "Creating"
+	def __str__(self):
+		return self.outputs[0].path_from(self.generator.bld.launch_node())
+
+class ui4(Task.Task):
+	"""
+	Process *.ui* files
+	"""
+	color   = 'BLUE'
+	run_str = '${QT_UIC} ${SRC} -o ${TGT}'
+	ext_out = ['.h']
+
+class ts2qm(Task.Task):
+	"""
+	Create *.qm* files from *.ts* files
+	"""
+	color   = 'BLUE'
+	run_str = '${QT_LRELEASE} ${QT_LRELEASE_FLAGS} ${SRC} -qm ${TGT}'
+
+class qm2rcc(Task.Task):
+	"""
+	Transform *.qm* files into *.rc* files
+	"""
+	color = 'BLUE'
+	after = 'ts2qm'
+
+	def run(self):
+		"""Create a qrc file including the inputs"""
+		txt = '\n'.join(['<file>%s</file>' % k.path_from(self.outputs[0].parent) for k in self.inputs])
+		code = '<!DOCTYPE RCC><RCC version="1.0">\n<qresource>\n%s\n</qresource>\n</RCC>' % txt
+		self.outputs[0].write(code)
+
+def configure(self):
+	"""
+	Besides the configuration options, the environment variable QT4_ROOT may be used
+	to give the location of the qt4 libraries (absolute path).
+
+	The detection will use the program *pkg-config* through :py:func:`waflib.Tools.config_c.check_cfg`
+	"""
+	self.find_qt4_binaries()
+	self.set_qt4_libs_to_check()
+	self.set_qt4_defines()
+	self.find_qt4_libraries()
+	self.add_qt4_rpath()
+	self.simplify_qt4_libs()
+
+@conf
+def find_qt4_binaries(self):
+	env = self.env
+	opt = Options.options
+
+	qtdir = getattr(opt, 'qtdir', '')
+	qtbin = getattr(opt, 'qtbin', '')
+
+	paths = []
+
+	if qtdir:
+		qtbin = os.path.join(qtdir, 'bin')
+
+	# the qt directory has been given from QT4_ROOT - deduce the qt binary path
+	if not qtdir:
+		qtdir = os.environ.get('QT4_ROOT', '')
+		qtbin = os.environ.get('QT4_BIN') or os.path.join(qtdir, 'bin')
+
+	if qtbin:
+		paths = [qtbin]
+
+	# no qtdir, look in the path and in /usr/local/Trolltech
+	if not qtdir:
+		paths = os.environ.get('PATH', '').split(os.pathsep)
+		paths.append('/usr/share/qt4/bin/')
+		try:
+			lst = Utils.listdir('/usr/local/Trolltech/')
+		except OSError:
+			pass
+		else:
+			if lst:
+				lst.sort()
+				lst.reverse()
+
+				# keep the highest version
+				qtdir = '/usr/local/Trolltech/%s/' % lst[0]
+				qtbin = os.path.join(qtdir, 'bin')
+				paths.append(qtbin)
+
+	# at the end, try to find qmake in the paths given
+	# keep the one with the highest version
+	cand = None
+	prev_ver = ['4', '0', '0']
+	for qmk in ('qmake-qt4', 'qmake4', 'qmake'):
+		try:
+			qmake = self.find_program(qmk, path_list=paths)
+		except self.errors.ConfigurationError:
+			pass
+		else:
+			try:
+				version = self.cmd_and_log(qmake + ['-query', 'QT_VERSION']).strip()
+			except self.errors.WafError:
+				pass
+			else:
+				if version:
+					new_ver = version.split('.')
+					if new_ver > prev_ver:
+						cand = qmake
+						prev_ver = new_ver
+	if cand:
+		self.env.QMAKE = cand
+	else:
+		self.fatal('Could not find qmake for qt4')
+
+	qtbin = self.cmd_and_log(self.env.QMAKE + ['-query', 'QT_INSTALL_BINS']).strip() + os.sep
+
+	def find_bin(lst, var):
+		if var in env:
+			return
+		for f in lst:
+			try:
+				ret = self.find_program(f, path_list=paths)
+			except self.errors.ConfigurationError:
+				pass
+			else:
+				env[var]=ret
+				break
+
+	find_bin(['uic-qt3', 'uic3'], 'QT_UIC3')
+	find_bin(['uic-qt4', 'uic'], 'QT_UIC')
+	if not env.QT_UIC:
+		self.fatal('cannot find the uic compiler for qt4')
+
+	self.start_msg('Checking for uic version')
+	uicver = self.cmd_and_log(env.QT_UIC + ["-version"], output=Context.BOTH)
+	uicver = ''.join(uicver).strip()
+	uicver = uicver.replace('Qt User Interface Compiler ','').replace('User Interface Compiler for Qt', '')
+	self.end_msg(uicver)
+	if uicver.find(' 3.') != -1:
+		self.fatal('this uic compiler is for qt3, add uic for qt4 to your path')
+
+	find_bin(['moc-qt4', 'moc'], 'QT_MOC')
+	find_bin(['rcc-qt4', 'rcc'], 'QT_RCC')
+	find_bin(['lrelease-qt4', 'lrelease'], 'QT_LRELEASE')
+	find_bin(['lupdate-qt4', 'lupdate'], 'QT_LUPDATE')
+
+	env['UIC3_ST']= '%s -o %s'
+	env['UIC_ST'] = '%s -o %s'
+	env['MOC_ST'] = '-o'
+	env['ui_PATTERN'] = 'ui_%s.h'
+	env['QT_LRELEASE_FLAGS'] = ['-silent']
+	env.MOCCPPPATH_ST = '-I%s'
+	env.MOCDEFINES_ST = '-D%s'
+
+@conf
+def find_qt4_libraries(self):
+	qtlibs = getattr(Options.options, 'qtlibs', None) or os.environ.get("QT4_LIBDIR")
+	if not qtlibs:
+		try:
+			qtlibs = self.cmd_and_log(self.env.QMAKE + ['-query', 'QT_INSTALL_LIBS']).strip()
+		except Errors.WafError:
+			qtdir = self.cmd_and_log(self.env.QMAKE + ['-query', 'QT_INSTALL_PREFIX']).strip() + os.sep
+			qtlibs = os.path.join(qtdir, 'lib')
+	self.msg('Found the Qt4 libraries in', qtlibs)
+
+	qtincludes =  os.environ.get("QT4_INCLUDES") or self.cmd_and_log(self.env.QMAKE + ['-query', 'QT_INSTALL_HEADERS']).strip()
+	env = self.env
+	if not 'PKG_CONFIG_PATH' in os.environ:
+		os.environ['PKG_CONFIG_PATH'] = '%s:%s/pkgconfig:/usr/lib/qt4/lib/pkgconfig:/opt/qt4/lib/pkgconfig:/usr/lib/qt4/lib:/opt/qt4/lib' % (qtlibs, qtlibs)
+
+	try:
+		if os.environ.get("QT4_XCOMPILE"):
+			raise self.errors.ConfigurationError()
+		self.check_cfg(atleast_pkgconfig_version='0.1')
+	except self.errors.ConfigurationError:
+		for i in self.qt4_vars:
+			uselib = i.upper()
+			if Utils.unversioned_sys_platform() == "darwin":
+				# Since at least qt 4.7.3 each library locates in separate directory
+				frameworkName = i + ".framework"
+				qtDynamicLib = os.path.join(qtlibs, frameworkName, i)
+				if os.path.exists(qtDynamicLib):
+					env.append_unique('FRAMEWORK_' + uselib, i)
+					self.msg('Checking for %s' % i, qtDynamicLib, 'GREEN')
+				else:
+					self.msg('Checking for %s' % i, False, 'YELLOW')
+				env.append_unique('INCLUDES_' + uselib, os.path.join(qtlibs, frameworkName, 'Headers'))
+			elif env.DEST_OS != "win32":
+				qtDynamicLib = os.path.join(qtlibs, "lib" + i + ".so")
+				qtStaticLib = os.path.join(qtlibs, "lib" + i + ".a")
+				if os.path.exists(qtDynamicLib):
+					env.append_unique('LIB_' + uselib, i)
+					self.msg('Checking for %s' % i, qtDynamicLib, 'GREEN')
+				elif os.path.exists(qtStaticLib):
+					env.append_unique('LIB_' + uselib, i)
+					self.msg('Checking for %s' % i, qtStaticLib, 'GREEN')
+				else:
+					self.msg('Checking for %s' % i, False, 'YELLOW')
+
+				env.append_unique('LIBPATH_' + uselib, qtlibs)
+				env.append_unique('INCLUDES_' + uselib, qtincludes)
+				env.append_unique('INCLUDES_' + uselib, os.path.join(qtincludes, i))
+			else:
+				# Release library names are like QtCore4
+				for k in ("lib%s.a", "lib%s4.a", "%s.lib", "%s4.lib"):
+					lib = os.path.join(qtlibs, k % i)
+					if os.path.exists(lib):
+						env.append_unique('LIB_' + uselib, i + k[k.find("%s") + 2 : k.find('.')])
+						self.msg('Checking for %s' % i, lib, 'GREEN')
+						break
+				else:
+					self.msg('Checking for %s' % i, False, 'YELLOW')
+
+				env.append_unique('LIBPATH_' + uselib, qtlibs)
+				env.append_unique('INCLUDES_' + uselib, qtincludes)
+				env.append_unique('INCLUDES_' + uselib, os.path.join(qtincludes, i))
+
+				# Debug library names are like QtCore4d
+				uselib = i.upper() + "_debug"
+				for k in ("lib%sd.a", "lib%sd4.a", "%sd.lib", "%sd4.lib"):
+					lib = os.path.join(qtlibs, k % i)
+					if os.path.exists(lib):
+						env.append_unique('LIB_' + uselib, i + k[k.find("%s") + 2 : k.find('.')])
+						self.msg('Checking for %s' % i, lib, 'GREEN')
+						break
+				else:
+					self.msg('Checking for %s' % i, False, 'YELLOW')
+
+				env.append_unique('LIBPATH_' + uselib, qtlibs)
+				env.append_unique('INCLUDES_' + uselib, qtincludes)
+				env.append_unique('INCLUDES_' + uselib, os.path.join(qtincludes, i))
+	else:
+		for i in self.qt4_vars_debug + self.qt4_vars:
+			self.check_cfg(package=i, args='--cflags --libs', mandatory=False)
+
+@conf
+def simplify_qt4_libs(self):
+	# the libpaths make really long command-lines
+	# remove the qtcore ones from qtgui, etc
+	env = self.env
+	def process_lib(vars_, coreval):
+		for d in vars_:
+			var = d.upper()
+			if var == 'QTCORE':
+				continue
+
+			value = env['LIBPATH_'+var]
+			if value:
+				core = env[coreval]
+				accu = []
+				for lib in value:
+					if lib in core:
+						continue
+					accu.append(lib)
+				env['LIBPATH_'+var] = accu
+
+	process_lib(self.qt4_vars,       'LIBPATH_QTCORE')
+	process_lib(self.qt4_vars_debug, 'LIBPATH_QTCORE_DEBUG')
+
+@conf
+def add_qt4_rpath(self):
+	# rpath if wanted
+	env = self.env
+	if getattr(Options.options, 'want_rpath', False):
+		def process_rpath(vars_, coreval):
+			for d in vars_:
+				var = d.upper()
+				value = env['LIBPATH_'+var]
+				if value:
+					core = env[coreval]
+					accu = []
+					for lib in value:
+						if var != 'QTCORE':
+							if lib in core:
+								continue
+						accu.append('-Wl,--rpath='+lib)
+					env['RPATH_'+var] = accu
+		process_rpath(self.qt4_vars,       'LIBPATH_QTCORE')
+		process_rpath(self.qt4_vars_debug, 'LIBPATH_QTCORE_DEBUG')
+
+@conf
+def set_qt4_libs_to_check(self):
+	if not hasattr(self, 'qt4_vars'):
+		self.qt4_vars = QT4_LIBS
+	self.qt4_vars = Utils.to_list(self.qt4_vars)
+	if not hasattr(self, 'qt4_vars_debug'):
+		self.qt4_vars_debug = [a + '_debug' for a in self.qt4_vars]
+	self.qt4_vars_debug = Utils.to_list(self.qt4_vars_debug)
+
+@conf
+def set_qt4_defines(self):
+	if sys.platform != 'win32':
+		return
+	for x in self.qt4_vars:
+		y = x[2:].upper()
+		self.env.append_unique('DEFINES_%s' % x.upper(), 'QT_%s_LIB' % y)
+		self.env.append_unique('DEFINES_%s_DEBUG' % x.upper(), 'QT_%s_LIB' % y)
+
+def options(opt):
+	"""
+	Command-line options
+	"""
+	opt.add_option('--want-rpath', action='store_true', default=False, dest='want_rpath', help='enable the rpath for qt libraries')
+
+	opt.add_option('--header-ext',
+		type='string',
+		default='',
+		help='header extension for moc files',
+		dest='qt_header_ext')
+
+	for i in 'qtdir qtbin qtlibs'.split():
+		opt.add_option('--'+i, type='string', default='', dest=i)
+
+	opt.add_option('--translate', action="store_true", help="collect translation strings", dest="trans_qt4", default=False)
+