Add option --with-additional-vms, build once, get them all

[Matthias Klose]

Andrew John Hughes schrieb:
> 2009/4/30 Matthias Klose <doko at ubuntu.com>:
>> The attached patch adds a configure option --with-additional-vms, which allows
>> passing of --with-additional-vms=cacao,shark to build two additional vm's on an
>> architecture where hotspot is the default. Allowed values are cacao, shark and
>> zero. Shark is not a separate build, but the zero build configured for shark.

> Rather than adding yet more conflicting options, could we not just add
> --enable/disable-hotspot, so which VMs are built is determined by the
> state of --enable-zero/shark/cacao/hotspot?

what is conflicting about "additional"? "just" handling all combinations equally
 is a lot more of work, because some combinations cannot be built (hotspot with
cacao), and you still would have to decide about which one gets the default.

  Matthias