Hooray! On 5 dec 2013, at 11:49, Magnus Ihse Bursie <magnus.ihse.bur...@oracle.com> wrote:
> We have just "re-opened" the build-infra project (repos and mailing list) for > the continuation of the conversion of the old build system. > > "Hey, wasn't that finished already?" you might be thinking. Unfortunately, > no. Due to constraints, we left out a major component in the conversion -- > hotspot. > > I and Erik have been working on a prototype for building Hotspot using the > new build system. It has been developed in a private repository, but is now > ready to be moved to build-infra. > > You are of course welcome to try it out, but unless you're eager, it is > probably a bit too early. :-) The current prototype has the following > limitations/properties: > * It has only been tested (and probably only work) on linux-x86_64. > * It creates roughly the correct collection of files in the > build/hotspot/dist directory. > * It compiles roughly the correct set of native files, with roughly the > correct set of compiler flags. > * It creates jar files with roughly the correct contents. > > However, the compare script clearly shows that "roughly" does still not mean > "identical". :-) > > Going forward, we need to add support for all platforms, and make sure that > the built bits indeed end up identical to the old build system. There are > also several pieces of functionality in the current build system that needs > to be addressed. > > On the bright side, we can already (with no optimizations being done > whatsoever) see a slight speed increase (2 min 11 sec vs 2 min 35 sec on my > machine). But most of all, we see a clear reduction of complexity of the > build system. Compare: > > magnusi@../hotspot/make$ wc `find . -type f` | grep total > 22527 94124 803058 total > > with > > magnusi@.../hotspot/makefiles$ wc `find . -type f` | grep total > 753 3686 32369 total > > While this will surely double in size before we're done, it's still an order > of magnitude simpler. > > /Magnus
