Include waf as an extracted source directory, rather than as a one-in-a-file script.

1 files changed, 736 insertions, 0 deletions

diff --git a/buildtools/wafadmin/Tools/config_c.py b/buildtools/wafadmin/Tools/config_c.py
new file mode 100644
index 0000000000..a32d8aaf1a
--- /dev/null
+++ b/buildtools/wafadmin/Tools/config_c.py
@@ -0,0 +1,736 @@
+#!/usr/bin/env python
+# encoding: utf-8
+# Thomas Nagy, 2005-2008 (ita)
+
+"""
+c/c++ configuration routines
+"""
+
+import os, imp, sys, shlex, shutil
+from Utils import md5
+import Build, Utils, Configure, Task, Options, Logs, TaskGen
+from Constants import *
+from Configure import conf, conftest
+
+cfg_ver = {
+	'atleast-version': '>=',
+	'exact-version': '==',
+	'max-version': '<=',
+}
+
+SNIP1 = '''
+	int main() {
+	void *p;
+	p=(void*)(%s);
+	return 0;
+}
+'''
+
+SNIP2 = '''
+int main() {
+	if ((%(type_name)s *) 0) return 0;
+	if (sizeof (%(type_name)s)) return 0;
+}
+'''
+
+SNIP3 = '''
+int main() {
+	return 0;
+}
+'''
+
+def parse_flags(line, uselib, env):
+	"""pkg-config still has bugs on some platforms, and there are many -config programs, parsing flags is necessary :-/"""
+
+	lst = shlex.split(line)
+	while lst:
+		x = lst.pop(0)
+		st = x[:2]
+		ot = x[2:]
+		app = env.append_value
+		if st == '-I' or st == '/I':
+			if not ot: ot = lst.pop(0)
+			app('CPPPATH_' + uselib, ot)
+		elif st == '-D':
+			if not ot: ot = lst.pop(0)
+			app('CXXDEFINES_' + uselib, ot)
+			app('CCDEFINES_' + uselib, ot)
+		elif st == '-l':
+			if not ot: ot = lst.pop(0)
+			app('LIB_' + uselib, ot)
+		elif st == '-L':
+			if not ot: ot = lst.pop(0)
+			app('LIBPATH_' + uselib, ot)
+		elif x == '-pthread' or x.startswith('+'):
+			app('CCFLAGS_' + uselib, x)
+			app('CXXFLAGS_' + uselib, x)
+			app('LINKFLAGS_' + uselib, x)
+		elif x == '-framework':
+			app('FRAMEWORK_' + uselib, lst.pop(0))
+		elif x.startswith('-F'):
+			app('FRAMEWORKPATH_' + uselib, x[2:])
+		elif x.startswith('-std'):
+			app('CCFLAGS_' + uselib, x)
+			app('CXXFLAGS_' + uselib, x)
+			app('LINKFLAGS_' + uselib, x)
+		elif x.startswith('-Wl'):
+			app('LINKFLAGS_' + uselib, x)
+		elif x.startswith('-m') or x.startswith('-f'):
+			app('CCFLAGS_' + uselib, x)
+			app('CXXFLAGS_' + uselib, x)
+
+@conf
+def ret_msg(self, f, kw):
+	"""execute a function, when provided"""
+	if isinstance(f, str):
+		return f
+	return f(kw)
+
+@conf
+def validate_cfg(self, kw):
+	if not 'path' in kw:
+		kw['path'] = 'pkg-config --errors-to-stdout --print-errors'
+
+	# pkg-config version
+	if 'atleast_pkgconfig_version' in kw:
+		if not 'msg' in kw:
+			kw['msg'] = 'Checking for pkg-config version >= %s' % kw['atleast_pkgconfig_version']
+		return
+
+	# pkg-config --modversion
+	if 'modversion' in kw:
+		return
+
+	if 'variables' in kw:
+		if not 'msg' in kw:
+			kw['msg'] = 'Checking for %s variables' % kw['package']
+		return
+
+	# checking for the version of a module, for the moment, one thing at a time
+	for x in cfg_ver.keys():
+		y = x.replace('-', '_')
+		if y in kw:
+			if not 'package' in kw:
+				raise ValueError('%s requires a package' % x)
+
+			if not 'msg' in kw:
+				kw['msg'] = 'Checking for %s %s %s' % (kw['package'], cfg_ver[x], kw[y])
+			return
+
+	if not 'msg' in kw:
+		kw['msg'] = 'Checking for %s' % (kw['package'] or kw['path'])
+	if not 'okmsg' in kw:
+		kw['okmsg'] = 'yes'
+	if not 'errmsg' in kw:
+		kw['errmsg'] = 'not found'
+
+@conf
+def cmd_and_log(self, cmd, kw):
+	Logs.debug('runner: %s\n' % cmd)
+	if self.log:
+		self.log.write('%s\n' % cmd)
+
+	try:
+		p = Utils.pproc.Popen(cmd, stdout=Utils.pproc.PIPE, stderr=Utils.pproc.PIPE, shell=True)
+		(out, err) = p.communicate()
+	except OSError, e:
+		self.log.write('error %r' % e)
+		self.fatal(str(e))
+
+	# placeholder, don't touch
+	out = str(out)
+	err = str(err)
+
+	if self.log:
+		self.log.write(out)
+		self.log.write(err)
+
+	if p.returncode:
+		if not kw.get('errmsg', ''):
+			if kw.get('mandatory', False):
+				kw['errmsg'] = out.strip()
+			else:
+				kw['errmsg'] = 'no'
+		self.fatal('fail')
+	return out
+
+@conf
+def exec_cfg(self, kw):
+
+	# pkg-config version
+	if 'atleast_pkgconfig_version' in kw:
+		cmd = '%s --atleast-pkgconfig-version=%s' % (kw['path'], kw['atleast_pkgconfig_version'])
+		self.cmd_and_log(cmd, kw)
+		if not 'okmsg' in kw:
+			kw['okmsg'] = 'yes'
+		return
+
+	# checking for the version of a module
+	for x in cfg_ver:
+		y = x.replace('-', '_')
+		if y in kw:
+			self.cmd_and_log('%s --%s=%s %s' % (kw['path'], x, kw[y], kw['package']), kw)
+			if not 'okmsg' in kw:
+				kw['okmsg'] = 'yes'
+			self.define(self.have_define(kw.get('uselib_store', kw['package'])), 1, 0)
+			break
+
+	# retrieving the version of a module
+	if 'modversion' in kw:
+		version = self.cmd_and_log('%s --modversion %s' % (kw['path'], kw['modversion']), kw).strip()
+		self.define('%s_VERSION' % Utils.quote_define_name(kw.get('uselib_store', kw['modversion'])), version)
+		return version
+
+	# retrieving variables of a module
+	if 'variables' in kw:
+		env = kw.get('env', self.env)
+		uselib = kw.get('uselib_store', kw['package'].upper())
+		vars = Utils.to_list(kw['variables'])
+		for v in vars:
+			val = self.cmd_and_log('%s --variable=%s %s' % (kw['path'], v, kw['package']), kw).strip()
+			var = '%s_%s' % (uselib, v)
+			env[var] = val
+		if not 'okmsg' in kw:
+			kw['okmsg'] = 'yes'
+		return
+
+	lst = [kw['path']]
+
+
+	defi = kw.get('define_variable', None)
+	if not defi:
+		defi = self.env.PKG_CONFIG_DEFINES or {}
+	for key, val in defi.iteritems():
+		lst.append('--define-variable=%s=%s' % (key, val))
+
+	lst.append(kw.get('args', ''))
+	lst.append(kw['package'])
+
+	# so we assume the command-line will output flags to be parsed afterwards
+	cmd = ' '.join(lst)
+	ret = self.cmd_and_log(cmd, kw)
+	if not 'okmsg' in kw:
+		kw['okmsg'] = 'yes'
+
+	self.define(self.have_define(kw.get('uselib_store', kw['package'])), 1, 0)
+	parse_flags(ret, kw.get('uselib_store', kw['package'].upper()), kw.get('env', self.env))
+	return ret
+
+@conf
+def check_cfg(self, *k, **kw):
+	"""
+	for pkg-config mostly, but also all the -config tools
+	conf.check_cfg(path='mpicc', args='--showme:compile --showme:link', package='', uselib_store='OPEN_MPI')
+	conf.check_cfg(package='dbus-1', variables='system_bus_default_address session_bus_services_dir')
+	"""
+
+	self.validate_cfg(kw)
+	if 'msg' in kw:
+		self.check_message_1(kw['msg'])
+	ret = None
+	try:
+		ret = self.exec_cfg(kw)
+	except Configure.ConfigurationError, e:
+		if 'errmsg' in kw:
+			self.check_message_2(kw['errmsg'], 'YELLOW')
+		if 'mandatory' in kw and kw['mandatory']:
+			if Logs.verbose > 1:
+				raise
+			else:
+				self.fatal('the configuration failed (see %r)' % self.log.name)
+	else:
+		kw['success'] = ret
+		if 'okmsg' in kw:
+			self.check_message_2(self.ret_msg(kw['okmsg'], kw))
+
+	return ret
+
+# the idea is the following: now that we are certain
+# that all the code here is only for c or c++, it is
+# easy to put all the logic in one function
+#
+# this should prevent code duplication (ita)
+
+# env: an optional environment (modified -> provide a copy)
+# compiler: cc or cxx - it tries to guess what is best
+# type: cprogram, cshlib, cstaticlib
+# code: a c code to execute
+# uselib_store: where to add the variables
+# uselib: parameters to use for building
+# define: define to set, like FOO in #define FOO, if not set, add /* #undef FOO */
+# execute: True or False - will return the result of the execution
+
+@conf
+def validate_c(self, kw):
+	"""validate the parameters for the test method"""
+
+	if not 'env' in kw:
+		kw['env'] = self.env.copy()
+
+	env = kw['env']
+	if not 'compiler' in kw:
+		kw['compiler'] = 'cc'
+		if env['CXX_NAME'] and Task.TaskBase.classes.get('cxx', None):
+			kw['compiler'] = 'cxx'
+			if not self.env['CXX']:
+				self.fatal('a c++ compiler is required')
+		else:
+			if not self.env['CC']:
+				self.fatal('a c compiler is required')
+
+	if not 'type' in kw:
+		kw['type'] = 'cprogram'
+
+	assert not(kw['type'] != 'cprogram' and kw.get('execute', 0)), 'can only execute programs'
+
+
+	#if kw['type'] != 'program' and kw.get('execute', 0):
+	#	raise ValueError, 'can only execute programs'
+
+	def to_header(dct):
+		if 'header_name' in dct:
+			dct = Utils.to_list(dct['header_name'])
+			return ''.join(['#include <%s>\n' % x for x in dct])
+		return ''
+
+	# set the file name
+	if not 'compile_mode' in kw:
+		kw['compile_mode'] = (kw['compiler'] == 'cxx') and 'cxx' or 'cc'
+
+	if not 'compile_filename' in kw:
+		kw['compile_filename'] = 'test.c' + ((kw['compile_mode'] == 'cxx') and 'pp' or '')
+
+	#OSX
+	if 'framework_name' in kw:
+		try: TaskGen.task_gen.create_task_macapp
+		except AttributeError: self.fatal('frameworks require the osx tool')
+
+		fwkname = kw['framework_name']
+		if not 'uselib_store' in kw:
+			kw['uselib_store'] = fwkname.upper()
+
+		if not kw.get('no_header', False):
+			if not 'header_name' in kw:
+				kw['header_name'] = []
+			fwk = '%s/%s.h' % (fwkname, fwkname)
+			if kw.get('remove_dot_h', None):
+				fwk = fwk[:-2]
+			kw['header_name'] = Utils.to_list(kw['header_name']) + [fwk]
+
+		kw['msg'] = 'Checking for framework %s' % fwkname
+		kw['framework'] = fwkname
+		#kw['frameworkpath'] = set it yourself
+
+	if 'function_name' in kw:
+		fu = kw['function_name']
+		if not 'msg' in kw:
+			kw['msg'] = 'Checking for function %s' % fu
+		kw['code'] = to_header(kw) + SNIP1 % fu
+		if not 'uselib_store' in kw:
+			kw['uselib_store'] = fu.upper()
+		if not 'define_name' in kw:
+			kw['define_name'] = self.have_define(fu)
+
+	elif 'type_name' in kw:
+		tu = kw['type_name']
+		if not 'msg' in kw:
+			kw['msg'] = 'Checking for type %s' % tu
+		if not 'header_name' in kw:
+			kw['header_name'] = 'stdint.h'
+		kw['code'] = to_header(kw) + SNIP2 % {'type_name' : tu}
+		if not 'define_name' in kw:
+			kw['define_name'] = self.have_define(tu.upper())
+
+	elif 'header_name' in kw:
+		if not 'msg' in kw:
+			kw['msg'] = 'Checking for header %s' % kw['header_name']
+
+		l = Utils.to_list(kw['header_name'])
+		assert len(l)>0, 'list of headers in header_name is empty'
+
+		kw['code'] = to_header(kw) + SNIP3
+
+		if not 'uselib_store' in kw:
+			kw['uselib_store'] = l[0].upper()
+
+		if not 'define_name' in kw:
+			kw['define_name'] = self.have_define(l[0])
+
+	if 'lib' in kw:
+		if not 'msg' in kw:
+			kw['msg'] = 'Checking for library %s' % kw['lib']
+		if not 'uselib_store' in kw:
+			kw['uselib_store'] = kw['lib'].upper()
+
+	if 'staticlib' in kw:
+		if not 'msg' in kw:
+			kw['msg'] = 'Checking for static library %s' % kw['staticlib']
+		if not 'uselib_store' in kw:
+			kw['uselib_store'] = kw['staticlib'].upper()
+
+	if 'fragment' in kw:
+		# an additional code fragment may be provided to replace the predefined code
+		# in custom headers
+		kw['code'] = kw['fragment']
+		if not 'msg' in kw:
+			kw['msg'] = 'Checking for custom code'
+		if not 'errmsg' in kw:
+			kw['errmsg'] = 'no'
+
+	for (flagsname,flagstype) in [('cxxflags','compiler'), ('cflags','compiler'), ('linkflags','linker')]:
+		if flagsname in kw:
+			if not 'msg' in kw:
+				kw['msg'] = 'Checking for %s flags %s' % (flagstype, kw[flagsname])
+			if not 'errmsg' in kw:
+				kw['errmsg'] = 'no'
+
+	if not 'execute' in kw:
+		kw['execute'] = False
+
+	if not 'errmsg' in kw:
+		kw['errmsg'] = 'not found'
+
+	if not 'okmsg' in kw:
+		kw['okmsg'] = 'yes'
+
+	if not 'code' in kw:
+		kw['code'] = SNIP3
+
+	if not kw.get('success'): kw['success'] = None
+
+	assert 'msg' in kw, 'invalid parameters, read http://freehackers.org/~tnagy/wafbook/single.html#config_helpers_c'
+
+@conf
+def post_check(self, *k, **kw):
+	"set the variables after a test was run successfully"
+
+	is_success = False
+	if kw['execute']:
+		if kw['success'] is not None:
+			is_success = True
+	else:
+		is_success = (kw['success'] == 0)
+
+	if 'define_name' in kw:
+		if 'header_name' in kw or 'function_name' in kw or 'type_name' in kw or 'fragment' in kw:
+			if kw['execute']:
+				key = kw['success']
+				if isinstance(key, str):
+					if key:
+						self.define(kw['define_name'], key, quote=kw.get('quote', 1))
+					else:
+						self.define_cond(kw['define_name'], True)
+				else:
+					self.define_cond(kw['define_name'], False)
+			else:
+				self.define_cond(kw['define_name'], is_success)
+
+	if is_success and 'uselib_store' in kw:
+		import cc, cxx
+		for k in set(cc.g_cc_flag_vars).union(cxx.g_cxx_flag_vars):
+			lk = k.lower()
+			# inconsistency: includes -> CPPPATH
+			if k == 'CPPPATH': lk = 'includes'
+			if k == 'CXXDEFINES': lk = 'defines'
+			if k == 'CCDEFINES': lk = 'defines'
+			if lk in kw:
+				val = kw[lk]
+				# remove trailing slash
+				if isinstance(val, str):
+					val = val.rstrip(os.path.sep)
+				self.env.append_unique(k + '_' + kw['uselib_store'], val)
+
+@conf
+def check(self, *k, **kw):
+	# so this will be the generic function
+	# it will be safer to use check_cxx or check_cc
+	self.validate_c(kw)
+	self.check_message_1(kw['msg'])
+	ret = None
+	try:
+		ret = self.run_c_code(*k, **kw)
+	except Configure.ConfigurationError, e:
+		self.check_message_2(kw['errmsg'], 'YELLOW')
+		if 'mandatory' in kw and kw['mandatory']:
+			if Logs.verbose > 1:
+				raise
+			else:
+				self.fatal('the configuration failed (see %r)' % self.log.name)
+	else:
+		kw['success'] = ret
+		self.check_message_2(self.ret_msg(kw['okmsg'], kw))
+
+	self.post_check(*k, **kw)
+	if not kw.get('execute', False):
+		return ret == 0
+	return ret
+
+@conf
+def run_c_code(self, *k, **kw):
+	test_f_name = kw['compile_filename']
+
+	k = 0
+	while k < 10000:
+		# make certain to use a fresh folder - necessary for win32
+		dir = os.path.join(self.blddir, '.conf_check_%d' % k)
+
+		# if the folder already exists, remove it
+		try:
+			shutil.rmtree(dir)
+		except OSError:
+			pass
+
+		try:
+			os.stat(dir)
+		except OSError:
+			break
+
+		k += 1
+
+	try:
+		os.makedirs(dir)
+	except:
+		self.fatal('cannot create a configuration test folder %r' % dir)
+
+	try:
+		os.stat(dir)
+	except:
+		self.fatal('cannot use the configuration test folder %r' % dir)
+
+	bdir = os.path.join(dir, 'testbuild')
+
+	if not os.path.exists(bdir):
+		os.makedirs(bdir)
+
+	env = kw['env']
+
+	dest = open(os.path.join(dir, test_f_name), 'w')
+	dest.write(kw['code'])
+	dest.close()
+
+	back = os.path.abspath('.')
+
+	bld = Build.BuildContext()
+	bld.log = self.log
+	bld.all_envs.update(self.all_envs)
+	bld.all_envs['default'] = env
+	bld.lst_variants = bld.all_envs.keys()
+	bld.load_dirs(dir, bdir)
+
+	os.chdir(dir)
+
+	bld.rescan(bld.srcnode)
+
+	if not 'features' in kw:
+		# conf.check(features='cc cprogram pyext', ...)
+		kw['features'] = [kw['compile_mode'], kw['type']] # "cprogram cc"
+
+	o = bld(features=kw['features'], source=test_f_name, target='testprog')
+
+	for k, v in kw.iteritems():
+		setattr(o, k, v)
+
+	self.log.write("==>\n%s\n<==\n" % kw['code'])
+
+	# compile the program
+	try:
+		bld.compile()
+	except Utils.WafError:
+		ret = Utils.ex_stack()
+	else:
+		ret = 0
+
+	# chdir before returning
+	os.chdir(back)
+
+	if ret:
+		self.log.write('command returned %r' % ret)
+		self.fatal(str(ret))
+
+	# if we need to run the program, try to get its result
+	# keep the name of the program to execute
+	if kw['execute']:
+		lastprog = o.link_task.outputs[0].abspath(env)
+
+		args = Utils.to_list(kw.get('exec_args', []))
+		proc = Utils.pproc.Popen([lastprog] + args, stdout=Utils.pproc.PIPE, stderr=Utils.pproc.PIPE)
+		(out, err) = proc.communicate()
+		w = self.log.write
+		w(str(out))
+		w('\n')
+		w(str(err))
+		w('\n')
+		w('returncode %r' % proc.returncode)
+		w('\n')
+		if proc.returncode:
+			self.fatal(Utils.ex_stack())
+		ret = out
+
+	return ret
+
+@conf
+def check_cxx(self, *k, **kw):
+	kw['compiler'] = 'cxx'
+	return self.check(*k, **kw)
+
+@conf
+def check_cc(self, *k, **kw):
+	kw['compiler'] = 'cc'
+	return self.check(*k, **kw)
+
+@conf
+def define(self, define, value, quote=1):
+	"""store a single define and its state into an internal list for later
+	   writing to a config header file.  Value can only be
+	   a string or int; other types not supported.  String
+	   values will appear properly quoted in the generated
+	   header file."""
+	assert define and isinstance(define, str)
+
+	# ordered_dict is for writing the configuration header in order
+	tbl = self.env[DEFINES] or Utils.ordered_dict()
+
+	# the user forgot to tell if the value is quoted or not
+	if isinstance(value, str):
+		if quote:
+			tbl[define] = '"%s"' % repr('"'+value)[2:-1].replace('"', '\\"')
+		else:
+			tbl[define] = value
+	elif isinstance(value, int):
+		tbl[define] = value
+	else:
+		raise TypeError('define %r -> %r must be a string or an int' % (define, value))
+
+	# add later to make reconfiguring faster
+	self.env[DEFINES] = tbl
+	self.env[define] = value # <- not certain this is necessary
+
+@conf
+def undefine(self, define):
+	"""store a single define and its state into an internal list
+	   for later writing to a config header file"""
+	assert define and isinstance(define, str)
+
+	tbl = self.env[DEFINES] or Utils.ordered_dict()
+
+	value = UNDEFINED
+	tbl[define] = value
+
+	# add later to make reconfiguring faster
+	self.env[DEFINES] = tbl
+	self.env[define] = value
+
+@conf
+def define_cond(self, name, value):
+	"""Conditionally define a name.
+	Formally equivalent to: if value: define(name, 1) else: undefine(name)"""
+	if value:
+		self.define(name, 1)
+	else:
+		self.undefine(name)
+
+@conf
+def is_defined(self, key):
+	defines = self.env[DEFINES]
+	if not defines:
+		return False
+	try:
+		value = defines[key]
+	except KeyError:
+		return False
+	else:
+		return value != UNDEFINED
+
+@conf
+def get_define(self, define):
+	"get the value of a previously stored define"
+	try: return self.env[DEFINES][define]
+	except KeyError: return None
+
+@conf
+def have_define(self, name):
+	"prefix the define with 'HAVE_' and make sure it has valid characters."
+	return self.__dict__.get('HAVE_PAT', 'HAVE_%s') % Utils.quote_define_name(name)
+
+@conf
+def write_config_header(self, configfile='', env='', guard='', top=False):
+	"save the defines into a file"
+	if not configfile: configfile = WAF_CONFIG_H
+	waf_guard = guard or '_%s_WAF' % Utils.quote_define_name(configfile)
+
+	# configfile -> absolute path
+	# there is a good reason to concatenate first and to split afterwards
+	if not env: env = self.env
+	if top:
+		diff = ''
+	else:
+		diff = Utils.diff_path(self.srcdir, self.curdir)
+	full = os.sep.join([self.blddir, env.variant(), diff, configfile])
+	full = os.path.normpath(full)
+	(dir, base) = os.path.split(full)
+
+	try: os.makedirs(dir)
+	except: pass
+
+	dest = open(full, 'w')
+	dest.write('/* Configuration header created by Waf - do not edit */\n')
+	dest.write('#ifndef %s\n#define %s\n\n' % (waf_guard, waf_guard))
+
+	dest.write(self.get_config_header())
+
+	# config files are not removed on "waf clean"
+	env.append_unique(CFG_FILES, os.path.join(diff, configfile))
+
+	dest.write('\n#endif /* %s */\n' % waf_guard)
+	dest.close()
+
+@conf
+def get_config_header(self):
+	"""Fill-in the contents of the config header. Override when you need to write your own config header."""
+	config_header = []
+
+	tbl = self.env[DEFINES] or Utils.ordered_dict()
+	for key in tbl.allkeys:
+		value = tbl[key]
+		if value is None:
+			config_header.append('#define %s' % key)
+		elif value is UNDEFINED:
+			config_header.append('/* #undef %s */' % key)
+		else:
+			config_header.append('#define %s %s' % (key, value))
+	return "\n".join(config_header)
+
+@conftest
+def find_cpp(conf):
+	v = conf.env
+	cpp = []
+	if v['CPP']: cpp = v['CPP']
+	elif 'CPP' in conf.environ: cpp = conf.environ['CPP']
+	if not cpp: cpp = conf.find_program('cpp', var='CPP')
+	#if not cpp: cpp = v['CC']
+	#if not cpp: cpp = v['CXX']
+	v['CPP'] = cpp
+
+@conftest
+def cc_add_flags(conf):
+	conf.add_os_flags('CFLAGS', 'CCFLAGS')
+	conf.add_os_flags('CPPFLAGS')
+
+@conftest
+def cxx_add_flags(conf):
+	conf.add_os_flags('CXXFLAGS')
+	conf.add_os_flags('CPPFLAGS')
+
+@conftest
+def link_add_flags(conf):
+	conf.add_os_flags('LINKFLAGS')
+	conf.add_os_flags('LDFLAGS', 'LINKFLAGS')
+
+@conftest
+def cc_load_tools(conf):
+	conf.check_tool('cc')
+
+@conftest
+def cxx_load_tools(conf):
+	conf.check_tool('cxx')
+