Race condition between hotspot build/import

[David Holmes]

On 14/09/2012 1:12 PM, David Holmes wrote:
> I'm currently always getting a build failure on a clean build when
> cross-compiling (which I don't think affects anything other than timing).
>
> The problem seems to be that the top-level make kicks of the hotspot and
> jdk makes concurrently, and the first part of the JDK make tries to
> import hotspot, and the hotspot/dist directory doesn't exist yet.
>
> I found the following changeset:
>
> # HG changeset patch
> # User ihse
> # Date 1347352614 -7200
> # Node ID 0d8ad4b406dff44492a906462af42be185aa7d3b
> # Parent 61eb8ec239f7547b78fd600b6359b2de2389dcec
> Protect the top-level Makefile against race conditions happening if
> inadvertently running with -jN.
>
> But the problem still exists.

Seems I had a fclone misfire and ended up with an inconsistent 
build-infra forest. Once that was fixed the build problem went away.

However I still have this problem in my jdk8 forest, even applying the 
above patch. Was there something else needed to deal with these races?

Thanks,
David

> David
> -----