Importing XSD into WSDL error in target namespace

Using wsdl2java from Apache CXF 4.0.3 I'm running into an error when trying to import XSD into my WSDL file. The files come from a 3rd party and with earlier versions of CXF the imports were working.

I've simplified the files down to the bare minimum to reproduce the problem. Here's the WSDL:

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://schemas.xmlsoap.org/wsdl/" targetNamespace="https://webservices.sabre.com/websvc">
    <types>
        <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
            <xsd:import namespace="http://schemas.xmlsoap.org/ws/2002/12/secext" schemaLocation="wsse.xsd"/>
        </xsd:schema>
    </types>
</definitions>

And this is the content of wsse.xsd:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema targetNamespace="http://schemas.xmlsoap.org/ws/2002/12/secext" xmlns:xs="http://www.w3.org/2001/XMLSchema">
</xs:schema>

When I run wsdl2java:

./wsdl2java -encoding UTF-8 -d /project/src/main/java -b "file:/project/src/main/resources/schema/custom-bindings/globalbinding.xjb" -p "=org.a.b.c" -suppress-generated-date -wsdlLocation classpath:schema/wsdl/sample.wsdl -verbose file:/project/src/main/resources/schema/wsdl/sample.wsdl

I get an error:

org.apache.cxf.tools.common.ToolException: file:///apache-cxf-4.0.3/bin/ [1,132]: the target namespace of the imported schema "" doesn't agree with the expected value "http://schemas.xmlsoap.org/ws/2002/12/secext

The targetNamespace of wsse.xsd matches the namespace of the xsd:import. I don't see why the targetNamespace in the definitions element is relevant and I've seen plenty of examples of xsd imports where the xsd:schema element is missing a targetNamespace.

I've tried setting targetNamespace on definitions and schema but it doesn't change the error. If I change targetNamespace in the wsse.xsd file being imported I get a different error about a namespace mismatch between xsd:import and the file being imported.

What is the cause of this?

The problem came from the -p "=org.a.b.c" command line option.

From documentation :

-p [ wsdl-namespace= ] PackageName

Specifies zero, or more, package names to use for the generated code. Optionally specifies the WSDL namespace to package name mapping.

If you want to output generated code in org.a.b.c package, only set -p "org.a.b.c", without = before packageName.