IcedTea/OpenJDK bootstrapping issue

[Michal Vyskocil]

On Monday 08 March 2010 02:08:20 pm Ludovic Courtès wrote:
> Hi,
> 
> Andrew John Hughes <gnu_andrew at member.fsf.org> writes:
> > 2010/1/21 Ludovic Courtès <ludo at gnu.org>:
> >> Andrew John Hughes <gnu_andrew at member.fsf.org> writes:
> [...]
> 
> >>> Does ant work for you with other builds?
> >> 
> >> Yes.  This version of Ant was built with GCJ.  It was then used to
> >> compile things like Xalan, Xerces, and Rhino.
> > 
> > It seems something is broken with regard to Ant.  The fact it's
> > looking for tools.jar in your gcj home directory rather than
> > bootstrap/jdk1.6.0 suggests it's ignoring the setting of
> > bootstrap.java.home.  Have you checked that bootstrap/jd1.6.0 has a
> > valid jar file in jre/lib/rt.jar?  I would guess it does as the
> > earlier stages have worked, but Ant is reverting to your system
> > install.
> 
> Perhaps I should have started with this: how did you build the Ant
> that’s used to build IcedTea?
> 
> I built it with GCJ, but Ant’s manual says it isn’t supported [0].
> I patched ‘build.properties’ to set ‘build.compiler’ to ‘gcj’ [1].  In
> addition I have gross hacks to make gcj/gij available as javac/java
> while building Ant itself [2].

The easiest way is simulate the Sun layout - see 

http://sources.redhat.com/rhug/java-gcj-compat.html
ftp://sources.redhat.com/pub/rhug/java-gcj-compat

It create a structure similar to Sun's layout, so you don't need patch 
anything, just use java-gcj-compat-devel as a build dependency. Not sure if 
the gcj 4.4 layout support Andrew mentioned does not obsolete it.

Regards
Michal Vyskocil
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