After the hotspot makefile rewrite and the elimination of the hotspot dist output directory, it's now time to create more fine granular top level make targets for building hotspot. This will enable better granularity in between hotspot build steps and the rest of the build. Building native libraries in the JDK will only need to wait for one libjvm to be built. Building docs will only require the gensrc step in hotspot to be built.

Here is the full list of new targets proposed:
hotspot-gensrc
hotspot-libs
hotspot-<variant>
hotspot-<variant>-gensrc
hotspot-<variant>-libs
hotspot-jsig