From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ricardo Wurmus <ricardo.wurmus@mdc-berlin.de>
Subject: Re: OpenJDK support
Date: Mon, 8 Feb 2016 15:10:18 +0100
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References: <20160208135740.GA27375@thebird.nl>
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To: Pjotr Prins <pjotr.public12@thebird.nl>
Cc: guix-devel@gnu.org


Pjotr Prins <pjotr.public12@thebird.nl> writes:

> To support the JVM we'll need to add the openjdk.
>
> Having a look at it I think it is doable. Only problem is that the
> java compiler needs to be bootstrapped with itself.=20
>
> In Nix they create a binary blob to bootstrap:
>
>     let
>       # !!! These should be on nixos.org
>       src =3D if glibc.system =3D=3D "x86_64-linux" then
>         fetchurl {
>           url =3D http://tarballs.nixos.org/openjdk-bootstrap-x86_64-li=
nux-2012-08-2
>     4.tar.xz;
>           sha256 =3D "0gla9dxrfq2w1hvgsnn8jg8a60k27im6z43a6iidi0qmwa0wa=
h32";
>         }
>       else if glibc.system =3D=3D "i686-linux" then
>         fetchurl {
>           url =3D http://tarballs.nixos.org/openjdk-bootstrap-i686-linu=
x-2012-08-24.
>     tar.xz;
>           sha256 =3D "184wq212bycwbbq4ix8cc6jwjxkrqw9b01zb86q95kqpa8zy5=
206";
>         }
>       else throw "No bootstrap for system";
>     in
>
> How do we go about this one?


We already have a JDK provided by the =E2=80=9Cjdk=E2=80=9D output of the=
 =E2=80=9Cicedtea=E2=80=9D
packages.  =E2=80=9CIcedTea=E2=80=9D is the name of the project that prov=
ides a heavily
patched framework allowing us to build the (patched) OpenJDK sources
with free software only.  Building the vanilla OpenJDK appparently isn=E2=
=80=99t
that easy =E2=80=93 and not really necessary since we have the IcedTea-if=
ied
version.

We are bootstrapping with GCJ.

~~ Ricardo