README revision 357:e01201e727da 
1README:
2  This file should be located at the top of the OpenJDK Mercurial root
3  repository. This root repository will include a "make" directory,
4  and a Makefile for building the entire OpenJDK.
5  A full OpenJDK repository set (forest) should also include the following
6  6 nested repositories:
7    "jdk", "hotspot", "langtools", "corba", "jaxws"  and "jaxp".
8  There are also several source downloads for the jax* repositories that
9  will be needed.
10
11  This one root repository can be obtained with something like:
12
13    hg clone http://hg.openjdk.java.net/jdk8/jdk8 openjdk8
14  
15  To make sure you have all the nested repositories, you can run the
16  get_source.sh script located in the same respository as this file:
17
18    cd openjdk8 && sh ./get_source.sh
19
20  People unfamiliar with Mercurial should read the first few chapters of
21  the Mercurial book: http://hgbook.red-bean.com/read/
22
23  See http://openjdk.java.net/ for more information about the OpenJDK.
24
25Simple Build Instructions:
26  
27  0. Get the necessary system software/packages installed on your system, see
28     http://hg.openjdk.java.net/jdk8/build/raw-file/tip/README-builds.html
29
30  1. If you don't have a jdk6 installed, download and install a JDK 6 from
31     http://java.sun.com/javase/downloads/index.jsp
32     Set the environment variable ALT_BOOTDIR to the location of JDK 6.
33
34  2. Check the sanity of doing a build with your current system:
35       make sanity
36     See README-builds.html if you run into problems.
37  
38  3. Do a complete build of the OpenJDK:
39       make all
40     The resulting JDK image should be found in build/*/j2sdk-image
41
42where make is GNU make 3.81 or newer, /usr/bin/make on Linux usually
43is 3.81 or newer.
44
45Complete details are available in README-builds.html.
46