Guide for building OpenJDK Valhalla

Ivan St. Ivanov at
Sat Jan 17 20:06:29 UTC 2015

Hi Nils,

Have you built openjdk so far? If not, there are the build instructions:

You may notice that there are instructions for building OpenJDK on your own
machine or on VM. I would recommend to use Linux. I've done it once on
Windows, but it was really hard. So, if you are not running Linux on your
computer, then choose virtual machine.

Now, you can follow the same instructions for building Valhalla. The only
difference is the repository where you get the sources. So, at the
GetSource step (
instead of doing:

hg clone jdk9

...for Valhalla you should do something along these lines:

hg clone valhalla

The rest should be the same.

I hope this helps!

On Sat, Jan 17, 2015 at 9:06 PM, Nils Jonsson <aka.bash0r at> wrote:

> Hey everyone,
> I wanted to start helping testing the Valhalla project after reading on the
> mailing list recently. Is there any guide or something on the web where I
> can get started building the project?
> Thanks in advance!

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