First build-infra push to jdk8 -- try out the new build system!

[Jonathan Gibbons]

On 04/13/2012 02:07 AM, Magnus Ihse Bursie wrote:
>
> As for the --with-num-cores, yes, it is a configure time option. The 
> underlying assumption is that your hardware doesn't really change, and 
> if your build system is too weak, it will be too weak at configure 
> time and at all make times. With that said, it is always possible (and 
> not very hard) to re-run configure if you need to tweak such a parameter.
>

As a developer, my machoine may not change, but my expectations may.   
Sometimes I want a build to run in the background while I pursue other 
activities, whether tetris, browsing, or working on the next bug fix.   
Other times, I need the build ASAP.  So while your underlying assumption 
is good for batch build systems, it may not always be true on developer 
machines.

> The output build directory is named differently, yes. If you have 
> local scripts that depend on the name of output directories, you will 
> have to modify those. The exact format of the automatically named 
> output directories is still not cut in stone, though, so the actual 
> names might change. One of the reasons for the new names is to allow 
> multiple configurations in parallel, with different options such as 
> debug level or target platform.

It would be nice (and would make sense in this side-by-side world) to 
have a configure option to use the "traditional" build directories.  We 
have yet to see how much developers will want to build multiple 
configurations side-by-side.

>
> /Magnus