PATCH RFA: Do not build java by default

[Jeff Law]

  On 11/02/10 09:35, Tom Tromey wrote:
>>>>>> "Jeff" == Jeff Law<law@redhat.com>  writes:
> Jeff>  Building libjava (at least for me) is primarily painful due to 2 files
> Jeff>  (the names escape me) and the rather poor coarse level parallelism
> Jeff>  (can't build the 32bit and 64bit multilibs in parallel for example).
>
> Jeff>  Has anyone looked at fixing the build machinery for libjava to make it
> Jeff>  more sensible?
>
> Nope.  AFAIK it is already as parallelized as possible, but it has been
> a while since I looked at it.
>
> I thought the really bad file (HTML_401F.java, IIRC) had some functions
> split up so that it wasn't so evil any more.
It's the libgcj_tools_la-tools which gets built twice for each 
architecture and its build seems to always fire off last and takes a few 
minutes for each compilation.

> The multilib thing sounds like a top-level problem of some kind.
> At least, I don't recall that libjava does anything special here.
Yea, I suspect the way multilibs are handled is far from ideal from a 
parallel make standpoint.  Fixing the underlying multilib goop may be 
ugly, but probably would have a nice benefit across the various runtime 
libraries we utilize.

jeff