def METHOD_NAME(self, module_name):
	"""
	Check if the selected ruby interpreter can require the given ruby module::
		def configure(conf):
			conf.check_ruby_module('libxml')
	:param module_name: module
	:type  module_name: string
	"""
	self.start_msg('Ruby module %s' % module_name)
	try:
		self.cmd_and_log(self.env.RUBY + ['-e', 'require \'%s\';puts 1' % module_name])
	except Errors.WafError:
		self.end_msg(False)
		self.fatal('Could not find the ruby module %r' % module_name)
	self.end_msg(True)