Windows instructions for OpenJDK9

Martijn Verburg martijnverburg at
Sun Nov 23 15:52:33 UTC 2014

+1 to keeping the core build README up to date - there should be no reason
why we can't start submitting web revs to improve it...

On Friday, 21 November 2014, Patrick Reinhart <patrick at> wrote:

> Hi Magnus,
> > Some comments on the Windows parts:
> >
> > The officially supported build environment for Windows is Cygwin. I have
> not heard about babun before, but if it integrates Cygwin at its core, it
> should probably work. I'm a bit wary about the existence of "c:/..." style
> paths. Internally, the build system uses only /cygdrive/c/... style paths,
> and if a c:/... path slips by, things are likely to break.
> I changed that part i the documentation already to use constantly
> /cygdrive/c
> > It is recommended to use the mercurial from cygwin instead of
> TortoiseHG, to avoid unpleasant surprises related to file permissions, and
> once again, the c:/... paths problem. You can use TortoiseHG as a shell
> add-on in Windows, but don't use it for cloning.
> This is already changed to the cygwin’s mercurial package as it’s needed
> for the webrev script to work correctly
> > is not executable, so you need to run „bash
>“, not "./".
> Also changed in the documentation
> > On a more general note, I have noted that there is a widespread
> phenomenon on creating Yet Another Guide To Building OpenJDK, most of them
> more or less degraded permutations on the best practices. I think it would
> be better if there was a single official document that was good enough for
> everyone to use. I realize that the current official build documentation is
> severly lacking in usability, but I'm not sure what to do about it, or
> where to put a suitable document. I'm afraid part of the problem is that it
> is not clear where to go for proper, up-to-date, documentation.
> >
> > /Magnus
> The documentation Wiki page was created due the need to have a more quick
> way of keeping the documentation up-to-date. I personally would prefer to
> have the documentation closer to the OpenJDK repositories itself as the
> README-builds.html.
> Patrick


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