Suppress compiler warnings on JAXB generated classes

This is possibly a duplicate of this question (Avoiding Compiler warnings on code generated by xjc) but since I am not very well versed in XJC/JAXB custom bindings idiosyncrasies, I'll presume I may have misunderstood the mentioned question.

My question seems simple enough - how can I add @SuppressWarnings("all") annotation to generated JAXB class? We have 0 warning policy on our project and after JAXB generation step, we end up with 350+ warnings which are just terrible noise.

I would expect either a simple flag on the XJC or at least an easy way to provide such info but I cannot find any.

From what I've seen in my travels, people do one of these things:

1. @lexicore's JAXB2 Annotate Plugin which, according to examples, seems to do the job but to add a whole framework and hundreds of kB of code just to add simple annotation to a bunch of classes? Really??,
2. Custom JAXB bindings (I may be mistaken but this seems very arcane and I am not fully sure if it were event possible to do it this way),
3. Custom ANT target which will do a search-and-replace post-JAXB generation,
4. Eclipse 4+ seems to have an option to filter out warnings on selected projects but for various historical/legacy reasons we're stuck on Eclipse 3.7.2 (Indigo),
5. Custom XJC plugin which would do the annotation insertion (as suggested by one of the commenters, see here),
6. Placing all of the generated classes in a JAR, making the JAR a dependency of the project and then removing generated code altogether.

Formerly, we dealt with this by shoving the XML-related code in a separate Eclipse project and then disabling the warnings/errors on the project. Now, as part of code consolidation/refactoring, we've reshuffled things around and no longer have that luxury.

Is there really no elegant solution for such a seemingly trivial problem? Any feedback/thoughts are greatly appreciated.

FWIW, our project uses Ant as build system.

You have to use this plugin : jaxb2-annotate-plugin

2 solutions :

1 - Modify your xsd and add this kind of block

<xsd:element name="foobar" type="xsd:string">
    <xsd:annotation>
        <xsd:appinfo>
            <annox:annotate>@java.lang.SuppressWarnings("all")</annox:annotate>
        </xsd:appinfo>
    </xsd:annotation>
</xsd:element>

2 - Create a custom binding

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<jaxb:bindings
    xmlns:jaxb="http://java.sun.com/xml/ns/jaxb" xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns:xjc="http://java.sun.com/xml/ns/jaxb/xjc"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:annox="http://annox.dev.java.net"
    xsi:schemaLocation="http://java.sun.com/xml/ns/jaxb http://java.sun.com/xml/ns/jaxb/bindingschema_2_0.xsd"
    jaxb:extensionBindingPrefixes="xjc annox"
    version="2.1">
    <jaxb:bindings schemaLocation="schema.xsd" node="/xs:schema">
        <annox:annotate target="class">@java.lang.SuppressWarnings("all")</annox:annotate>
    </jaxb:bindings>
</jaxb:bindings>