@feature('cxx')
@before('apply_type_vars')
@after('default_cc')
def init_cxx(self):
	if not self.features in 'cc':
		self.mappings['.c'] = TaskGen.task_gen.mappings['.cxx']

	self.p_flag_vars = set(self.p_flag_vars).union(g_cxx_flag_vars)
	self.p_type_vars = set(self.p_type_vars).union(g_cxx_type_vars)

	if not self.env['CXX_NAME']:
		raise Utils.WafError("At least one compiler (g++, ..) must be selected")
dataset/ETHPy150Open appcelerator-archive/poc-nodejs-desktop/Resources/nodejs/builds/linux/node/lib/node/wafadmin/Tools/cxx.py/init_cxx/swapped operands of `in`