[xsd-users] error: '--namespace-map': unable to open in read mode

[wendy f]

Employee.xsd<?xml version="1.0" encoding="UTF-8"?><xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" >    <xsd:element name="Employee">        <xsd:complexType>            <xsd:sequence>                <xsd:element name="Name" type="xsd:string"/>                <xsd:element name="DateOfBirth" type="xsd:date"/>                <xsd:element name="Salary" type="xsd:int"/>            </xsd:sequence>        </xsd:complexType>    </xsd:element>
</xsd:schema>
$/xsd/xsd-3.2.0-x86_64-linux-gnu/bin/xsd cxx-tree --hxx-suffix .h --cxx-suffix .cpp --generate-default-ctor Employee.xsd# compile without problems
$/xsd/xsd-3.2.0-x86_64-linux-gnu/bin/xsd cxx-tree --hxx-suffix .h --cxx-suffix .cpp --generate-default-ctor Employee.xsd --namespace-map =employee--namespace-map: error: '--namespace-map': unable to open in read mode
Question> can someone tell me why the '--namespace-map' doesn't work here?
Thank you