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NOTE: This project is on an indefinite hiatus. I will fix any reported bugs, but I am taking a break from actually attempting to continue the bootstrap chain. If someone would like to continue the work here, please make a PR, or let me know about the work so I can point people in the right direction. But, as it stands, this repo is still the only option for bootstrapping up to Java 7 on KISS Linux.

This is a repo that aims to bootstrap Java on KISS Linux, without using precompiled binaries.

My current plan is to stick as close to GNU Guix's java.scm boostrap chain as close as possible. Diagram

The following are currently packaged:

  • jikes (1.22)
  • gnuclasspath (0.93)
  • fastjar (0.98)
  • jamvm (1.5.1)
  • ant (1.8.4)
  • ecj (3.2.2)
  • ecj-javac-wrapper
  • gnuclasspath (0.99)
  • classpath-jamvm-wrappers
  • gnuclasspath (git)
  • jamvm (2.0.0)
  • ecj (4.2.1)
  • gcj (6.4.0)
  • java-gcj-compat (6.4.0)
  • ecj (4.4.2)
  • ant (1.8.4)

The following are WIP:

  • openjdk7 (6.2.28)
  • openjdk8 (3.22.0)

If you have any experience or are able to get a package to compile, please submit a PR or issue! Any and all help is appreciated!

Requirements

You'll need all of the software packaged under extra/, the unofficial community repo, as well as access to kiss-xorg.

Current Issue

My current issue when building openjdk8 is a CRC error (full build log here).

What's odd is that when building openjdk7 with itself (not using the icedtea-boot target), a CRC error also occurs. That leads me to think that there is some issue with openjdk7's zip implementation.

UPDATE: this issue seems to have been slightly fixed, by instead using fastjar as the jar implementation during build, however now there are bigger build issues.

When trying to compile openjdk7 with itself, the build fails spectacularly: log

When trying to build openjdk8 with openjdk7, the build also fails: log

Installation

The process for installation is almost entirely manual, and I do not recommend you place any of these repos in your KISS_PATH, since this repo is strictly intended to be a testing ground and serve as a way to get java binaries starting from only source code.

JDK 0

These are the three components:

software version desc
jikes 1.22 Java Compiler
gnuclasspath 0.93 Java Standard Library
jamvm 1.5.1 Java Virtual Machine

To build & Install:

cd jdk0
export KISS_PATH="$PWD:$KISS_PATH"
kiss build jikes gnuclasspath jamvm
cd ..

JDK 0.5

JDK 0.5 is effectively a transition JDK, from 0 to 1 (the final bootstrap JDK).

These are the components:

software version desc
fastjar 0.98 Java's jar written in C
ant-bootstrap 1.8.4 Java build tool
ecj 3.2.2 Incremental Java Compiler
ecj-javac-wrapper git Wrapper for ECJ to behave like javac
gnuclasspath 0.99 Java Standard Library

To build & Install:

cd jdk0.5
export KISS_PATH="$PWD:$KISS_PATH"
kiss build fastjar ant-bootstrap
sh /etc/profile.d/apache-ant-bootstrap.sh
kiss build ecj ecj-javac-wrapper
kiss build gnuclasspath
cd ..

JDK 1

JDK 1 is the second to last bootstrap JDK and is used to compile GCJ (GNU Java Compiler).

software version desc
classpath-jamvm-wrappers git Wrapper for GNUclasspath Java tools
jamvm 2.0.0 Java Virtual Machine
ecj 4.2.1 Incremental Java Compiler
gnuclasspath git Java Standard Library

To build & Install:

cd jdk1
export KISS_PATH="$PWD:$KISS_PATH"
kiss build classpath-jamvm-wrappers
kiss build gnuclasspath
kiss build jamvm
kiss build ecj
cd ..

JDK 2

JDK 2 contains the final bootstrap JDK, that being GCJ. We are able to build it now because we have all of the requisite software built. We also build the latest release of ECJ that we can, and replace ant-bootstrap with ant.

software version desc
gcj6 6.4.0 GNU Java Compiler
java-gcj-compat 6.4.0 Alpine's wrapper to have GCJ behave like OpenJDK.
ant 1.8.4 Java build tool (without environment script)
ecj 4.4.2 Incremental Java Compiler

To build & Install:

cd jdk2
export KISS_PATH="$PWD:$KISS_PATH"
kiss build ecj
kiss build gcj6
kiss build java-gcj-compat
kiss remove ant-bootstrap
kiss build ant
cd ..

OpenJDK7 (Java 7)

OpenJDK7 is the first OpenJDK that we are able to build and is able to build OpenJDK8 (Java 8).

To build & Install:

#export KISS_PATH="$PWD:$KISS_PATH"
#kiss build openjdk7

# openjdk7's jar implementation is totally busted.
# So we rebuild fastjar, and switch to it for jar.
#kiss b fastjar
#kiss a fastjar /usr/lib/jvm/java-1.7-openjdk/bin/jar

OpenJDK8 (Java 8)

WIP. See above.

Useful links:

  • Alpine's buildscript here.
  • Void's buildscript here.
  • Gentoo-Bootstrap repo here.

https://www.reddit.com/r/Gentoo/comments/h96zuq/openjdk_or_icedtea_on_gentoo_musl/

Help is very much appreciated!