Bootstrapping IcedTea6 with IcedTea6

[Florian Weimer]

* Xerxes Rånby:

> 2011-12-05 07:51, Florian Weimer skrev:
>> In the light of<http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=631>,
>> I wonder what's the correct way of building IcedTea6 when you haven't
>> got GCJ, but only an older IcedTea6 version?  Is this possible at all?
>
> It are possible by simply passing --disable-bootstrap to icedtea6
> configure.

But bug 631 says that this isn't a supported configuration.

> The build will then use the system installed OpenJDK JDK instead of
> having to first compile a bootstrap compiler using GCJ/ECJ.

This doesn't work if you've got IcedTea6 1.8.7 (say) and want to build
1.8.10.

It seems to me that I have to build with Icedtea6, but still enable
bootstrapping.  Is this possible?