I can successfuly build dev-java/saxon08.4b on AMD64 and it runs fine. I use blackdown-jdk-1.4.2.02 and didn't need to modify anything to get it to work. (Note: dev-java/saxon-bin-8.4b is already marked ~amd64, but I am assuming saxon is the preferred package.) Reproducible: Always Steps to Reproduce:
I fixed this a while back apparently, but forgot to close the bug. Thanks for reporting.