Sunny Chan blogs Can you see the Logic in my Madness?

I am going to lead an OpenJDK hackathon in Taiwan later this month and I am trying to create an VM image so that people can get up and running quickly. Then last couple of weeks I came across Docker, which is a very simple container which allows easy deployment of images to your machine. So I have decided to try and see whether I can create some docker images for Hackathon use. Here is what I have come up with:

https://registry.hub.docker.com/u/sunnythepooh/openjdk-build

There are two images, one build with Centos 6 base image and one with Centos 7. Out of the container there are all the dependency you need to build OpenJDK 9, and an openjdk user. Once you pull the image down, you can login as openjdk and use mercurial to download openjdk and build straight away.

For Linux, you can install docker directly on any modern distribution. On Windows/MacOS you can use Boot2docker which would give you a very small Linux VM which you can run docker command from and you can take a look at the following command sequence to compile a OpenJDK 9 build:

[schan@sandybridge ~]$ sudo docker run -t -i sunnythepooh/openjdk-build:centos6 /bin/bash

bash-4.2# login openjdk

Password:

Last login: Fri Oct 31 05:02:55 on pts/1

-bash: cannot set terminal process group (-1): Inappropriate ioctl for device

-bash: no job control in this shell

[openjdk@e583ed8a4e04 ~]$ hg clone http://hg.openjdk.java.net/jdk9/dev jdk9

requesting all changes

adding changesets

adding manifests

adding file changes

added 1213 changesets with 1750 changes to 151 files

updating to branch default

93 files updated, 0 files merged, 0 files removed, 0 files unresolved

[openjdk@e583ed8a4e04 ~]$ cd jdk9

[openjdk@e583ed8a4e04 jdk9]$ ls

ASSEMBLY_EXCEPTION  Makefile  README-builds.html  common     get_source.sh  modules.xml

LICENSE             README    THIRD_PARTY_README  configure  make           test

[openjdk@e583ed8a4e04 jdk9]$ bash get_source.sh

WARNING: Mercurial version 2.6.3 or later is recommended. /bin/hg is version 2.6.2

# Repositories:  corba jaxp jaxws langtools jdk hotspot nashorn

                corba:   hg clone http://hg.openjdk.java.net/jdk9/dev/corba corba

                 jaxp:   hg clone http://hg.openjdk.java.net/jdk9/dev/jaxp jaxp

                corba:   requesting all changes

.............................................................................cut for brevity..........................................................................

              nashorn:   searching for changes

              nashorn:   no changes found

                  jdk:   searching for changes

                  jdk:   no changes found

                jaxws:   searching for changes

                jaxws:   no changes found

                 jaxp:   searching for changes

                 jaxp:   no changes found

                    .:   searching for changes

              hotspot:   searching for changes

                    .:   no changes found

              hotspot:   no changes found

                corba:   searching for changes

                corba:   no changes found

            langtools:   searching for changes

            langtools:   no changes found

[openjdk@e583ed8a4e04 jdk9]$ bash ./configure

Running generated-configure.sh

configure: Configuration created at Sat Nov  1 05:15:04 GMT 2014.

configure: configure script generated at timestamp 1414663067.

checking for basename... /bin/basename

checking for bash... /bin/bash

checking for cat... /bin/cat

checking for chmod... /bin/chmod

checking for cmp... /bin/cmp

checking for comm... /bin/comm

checking for cp... /bin/cp

checking for cut... /bin/cut

checking for date... /bin/date

.............................................................................cut for brevity..........................................................................

====================================================

A new configuration has been successfully created in

 /home/openjdk/jdk9/build/linux-x86_64-normal-server-release

using default settings.

Configuration summary:

* Debug level: release

* HS debug level: product

* JDK variant: normal

* JVM variants: server

* OpenJDK target: OS: linux, CPU architecture: x86, address length: 64
Tools summary:

* Boot JDK: openjdk version "1.8.0-internal" OpenJDK Runtime Environment (build 1.8.0-internal-openjdk_2014_10_31_05_05-b00) OpenJDK 64-Bit Server VM (build 25.20-b23, mixed mode) (at /usr/local/jvm/openjdk-1.8.0-internal)

* Toolchain: gcc (GNU Compiler Collection)

* C Compiler: Version 4.8.2 (at /bin/gcc)

* C++ Compiler: Version 4.8.2 (at /bin/g++)
Build performance summary:

* Cores to use: 7

* Memory limit: 11753 MB
WARNING: Your build output directory is not on a local disk.

This will severely degrade build performance!

It is recommended that you create an output directory on a local disk,

and run the configure script again from that directory.

[openjdk@e583ed8a4e04 jdk9]$ make images

Running make as '/bin/gmake -s VERBOSE=-s LOG_LEVEL=warn -R -I /home/openjdk/jdk9/make/common -s SPEC=/home/openjdk/jdk9//build/linux-x86_64-normal-server-release/spec.gmk'

Building OpenJDK for target 'images' in configuration 'linux-x86_64-normal-server-release'

.............................................................................cut for brevity..........................................................................

## Finished verify-modules (build time 00:00:08)
----- Build times -------

Start 2014-11-01 05:23:08

End 2014-11-01 05:30:34

00:00:08 verify-modules

00:07:26 TOTAL

-------------------------
Finished building OpenJDK for target 'images'

[openjdk@e583ed8a4e04 jdk9]$ build/linux-x86_64-normal-server-release/images/j2sdk-image/bin/java -version

openjdk version "1.9.0-internal"

OpenJDK Runtime Environment (build 1.9.0-internal-openjdk_2014_11_01_05_15-b00)

OpenJDK 64-Bit Server VM (build 1.9.0-internal-openjdk_2014_11_01_05_15-b00, mixed mode)