Openjdk7-jdk is a project mainly written in JAVA and C, based on the GPL-2.0 license.
Clone of openjdk repository
README: This file should be located at the top of the jdk Mercurial repository.
See http://openjdk.java.net/ for more information about the OpenJDK.
Simple Build Instructions:
Download and install a JDK 6 from http://java.sun.com/javase/downloads/index.jsp Set the environment variable ALT_BOOTDIR to the location of this JDK 6.
Either download and install the latest JDK7 from http://download.java.net/openjdk/jdk7/, or build your own complete OpenJDK7 by using the top level Makefile in the OpenJDK Mercurial forest. Set the environment variable ALT_JDK_IMPORT_PATH to the location of this latest JDK7 or OpenJDK7 build.
Check the sanity of doing a build with the current machine: cd make && gnumake sanity See README-builds.html if you run into problems.
Do a partial build of the jdk: cd make && gnumake all
Construct the images: cd make && gnumake images The resulting JDK image should be found in build/*/j2sdk-image