Need Java for closure compiler (?) do we really?

[smikes]

Message when using emcc:

root@ab8f73a5d01c:/mnt/test/examples# emcc hello.cc
INFO     root: (Emscripten: Running sanity checks)
WARNING  root: java does not seem to exist, required for closure compiler, which is optional (define JAVA in ~/.emscripten if you want it)