How to build OpenJDK 7 on Ubuntu 11.10 and 12.04

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This article will guide you to build OpenJDK in your 64-bit Ubuntu Linux (11.10 Oneiric Ocelot or 12.04 Precise Pangolin) without many trials and errors. It is based on the official OpenJDK build README, but the README file is out-of-date, and that’s why I wrote this guide.

Assumptions

  • You run 64-bit Ubuntu.
  • Your Sun/Oracle JDK 6 is installed at $HOME/.local/opt/jdk/1.6.
    • You can use your preferred installation location but you will have to adjust the scripts appear in this article.
  • You installed Apache Ant and the ant command is in your PATH variable.
  • You keep your development stuff at $HOME/Workspace.
    • This guide keeps OpenJDK source code at ~/Workspace/openjdk and HgForest at ~/Workspace/hgforest. However, you can keep them in different locations and adjust the scripts appear in this article.

Install required packages

apt-get install mercurial gawk g++ libcups2-dev libasound2-dev libfreetype6-dev libx11-dev libxt-dev libxext-dev libxrender-dev libxtst-dev libfontconfig1-dev

Install HgForest

hg clone https://bitbucket.org/pmezard/hgforest-crew/overview/ "$HOME/Workspace/hgforest"

Edit your $HOME/.hgrc to add these lines:

[extensions]
forest=~/Workspace/hgforest/forest.py

Clone the OpenJDK 7 repository

hg fclone http://hg.openjdk.java.net/jdk7u/jdk7u "$HOME/Workspace/openjdk"

Apply some patches

If you need to apply some patches, do it now, and then continue to build.

Build the OpenJDK 7

cd "$HOME/Workspace/openjdk"
unset JAVA_HOME
export LANG=C
export ALT_BOOTDIR="$HOME/.local/opt/jdk/1.6"
export ALLOW_DOWNLOADS=true
export EXTRA_LIBS=/usr/lib/x86_64-linux-gnu/libasound.so
source jdk/make/jdk_generic_profile.sh
make sanity && make && echo 'Images at: build/linux-amd64/j2sdk-image'

I usually write a build script that automatically sets the environment variables and calls make.

Once the build process is successful, you will find your OpenJDK image at build/linux-amd64/j2sdk-image.

12 Comments → How to build OpenJDK 7 on Ubuntu 11.10 and 12.04

  4. cordoval

    Your Sun/Oracle JDK 6 is installed at $HOME/.local/opt/jdk/1.6.
    You can use your preferred installation location but you will have to adjust the scripts appear in this article.

    I am not sure where my jdk 1.6 is, I lately also have installed jdk 1.7 which i installed via the ubuntu software center utility.

    will try to modify the paths but already think it could fail to work.

  5. cordoval

    ~ hg import ../fontfix.patch
    applying ../fontfix.patch
    unable to find ‘make/sun/font/Makefile’ for patching
    1 out of 1 hunks FAILED — saving rejects to file make/sun/font/Makefile.rej
    unable to find ‘src/share/native/sun/font/freetypeScaler.c’ for patching
    7 out of 7 hunks FAILED — saving rejects to file src/share/native/sun/font/freetypeScaler.c.rej
    abort: patch failed to apply

  6. Trustin Lee

    You can just download it from java.oracle.com and run the .bin installer to extract the distribution, and put it somewhere you want it to be.

  7. Trustin Lee

    Just use a patch command. It seems like you are applying the patch on a wrong directory – ‘hg import’ fails to find the files to patch.

  11. cordoval

    one more thing is that you are mixing the title jdk7 and within the instructions you still rely on jdk6, so i am confused by that, could you please clarify? thanks!

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