hardware floating point java/jruby blockers

[cjdaly]

Starting with a fresh ubuntu 13.06 image on the Cubieboard2, I used the hflt variant of the Oracle 7 JRE. I did not install libc6-armel or libsfgcc1, but generally followed other cubie2 setup steps.

Running java -version produces:

java version "1.7.0_45"
Java(TM) SE Embedded Runtime Environment (build 1.7.0_45-b15, headless)
Java HotSpot(TM) Embedded Server VM (build 24.45-b08, mixed mode)

Things seem more or less ok, but JRuby gives some bizarre results.

Got some ideas from the discussion here.

Running jruby -v -e 'puts "#{Process.pid}"' & shows the process ID returned from bash (from backgrounding the process) does not match the pid from ruby.

Running jruby -v -w -rffi -e 'p FFI::Platform::ARCH' produces:

LoadError: Could not load FFI Provider: (NotImplementedError) FFI not available: null
See http://jira.codehaus.org/browse/JRUBY-4583
require at org/jruby/RubyKernel.java:1082
...

Tried this: apt-get install -y libffi6 but it was already installed.

Tried this: apt-get install -y libjffi-java but it didn't seem to make a difference.

[cjdaly]

I'm seeing this on a Raspberry pi. I used NOOBS to install Raspian and then use the included Oracle 7, hardware float (I think, but not 100% positive) Java runtime.