GCJ 4.9.3 on mips64el-linux failing to build Ant.

Hi,

I’m trying to build Ant on mips64el-linux with GCJ 4.9.3.  (I’m doing
this to bootstrap IcedTea on MIPS, which needs Ant to be built.)  This
works just fine on x86_64 and i686, but it fails with odd errors on
mips64el.  Here is the complete build output on the MIPS build machine:

    http://hydra.gnu.org/build/730605/nixlog/1/raw

The very first error is this:

    1. ERROR in /tmp/nix-build-ant-1.9.4.drv-0/apache-ant-1.9.4/src/main/org/apache/tools/bzip2/BlockSort.java (at line 121)
    	QSORT_STACK_SIZE < FALLBACK_QSORT_STACK_SIZE
    	^^^^^^^^^^^^^^^^
    QSORT_STACK_SIZE cannot be resolved to a variable

This is quite odd because QSORT_STACK_SIZE is defined on line 116 as
such:

    private static final int QSORT_STACK_SIZE = 1000;

The following errors are all similar and complain about various other
undefined names.

GCJ is built with the latest version of ECJ published here:

    ftp://sourceware.org/pub/java/ecj-4.9.jar

We’re using the ‘javac’ wrapper template from Gentoo:

    http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/dev-java/gcj-jdk/files/javac.in?revision=1.1

Is ECJ or GCJ known to not be functional on mips64el or must I have done
something wrong in configuring or building it on this platform?

I’d be very happy for any hints.

~~ Ricardo