NOTE: $SOURCE_CODE is where you installed the source code to. If you are using the AdoptOpenJDKVMBuild then this is /home/openjdk/sources If you are using YourOwnEnvironment then it's likely to be something like /home/<your username>/sources
NOTE: the last letter in jdk8_tl refers to the small letter 'l' and not the digit 1 - and applicable to all references to this term throughout the wiki.
We're using the new build-infra based build system for OpenJDK.
To execute the new build-infra build, run the following:
cd $SOURCE_CODE ; cd jdk8_tl ; bash configure ;
NOTE: With the new build system, its no long needed to be navigate to the ../common/makefiles folder, you can run bash configure from the root (i.e. $SOURCE_CODE/jdk8_tl).
NOTE: This will likely fail the first time due to missing packages. The autoconf tool will tell you exactly what's missing, see the Install Missing Packages section below.
This works for:
You'll need to enter your sudo password and say Y when prompted:
sudo apt-get install build-essential openjdk-7-jdk libX11-dev libxext-dev libxrender-dev libxtst-dev libxt-dev libfreetype6-dev libcups2-dev libasound2-dev ccache g++-4.7-multilib libffi-dev
NOTE: ccache and g++-4.7-multilib are optional but speed up and support C++ builds in Eclipse respectively. If you get an error with g++ -4.7-multilib, replace that with g++ -4.6 -multilib
See how to Build Windows.
See how to Build OpenJDK on the MacOS.
This works for:
$ sudo yum groupinstall "Development Tools"
$ sudo yum install gcc-c++
$ sudo yum install libXrender-devel
$ sudo yum install freetype-devel
$ sudo yum install libXt-devel
$ make DEBUG_BINARIES=true SCTP_WERROR="" all
( thanks for this flag Omair Majid from RedHat issues with GCC 4.8.1)
A simple way to radically speed up compilation of native code (typically hotspot and native libraries in JDK) is to install ccache:
sudo yum install ccache
Details of known issues with GCC 4.8.1 and OpenJDK can be found at : http://gcc.gnu.org/onlinedocs/gccint.pdf
See chapter 17: Target Description Macros and Functions; Section 17.22 Controlling Debugging Information Format
To check which version of Java or the java compiler is installed on your system, enter the following command in a terminal window respectively:
java -version or javac -version
You should see something like the below output for the first command (your minor and build number versions might be newer):
java version "1.7.0_04" Java(TM) SE Runtime Environment (build 1.7.0_04-b20) Java HotSpot(TM) 64-Bit Server VM (build 23.0-b21, mixed mode)
NOTE: In order to build the OpenJDK projects, you require JDK/JRE version 1.7 installed on your system and set as the default Java version to use.
See Build Windows.
If your system has more than one version of Java, configure which one your system uses by entering the following command in a terminal window
sudo update-alternatives --config java
This will present you with a selection that looks similar to the following (the details may differ for you):
There are 2 choices for the alternative java (providing /usr/bin/java). Selection Path Priority Status ———————————————————— * 0 /usr/lib/jvm/java-6-openjdk/jre/bin/java 1061 auto mode 1 /usr/lib/jvm/jre1.7.0/jre/bin/java 3 manual mode Press enter to keep the current choice[*], or type selection number: 1
NB A successful build can take up to 12 hours. Make sure you have at least an 8 gig SD card and you are using the entire card. The package 'ccache' is also very important for speed.
Follow the instructions of the Debian/Ubuntu build except :
See Build Windows.
Once all of the packages are installed, run:
bash configure - if you are positioned at the root
You should see a success message similar to the below:
==================================================== A new configuration has been successfully created in /home/openjdk/sources/jdk8_tl/build/linux-x64-normal-server-release using default settings. Configuration summary: * Debug level: release * JDK variant: normal * JVM variants: server * OpenJDK target: OS: linux, CPU architecture: x86, address length: 64 * Boot JDK: /usr/lib/jvm/java-7-openjdk-amd64 Build performance summary: * Cores to use: 1 * Memory limit: 2003 MB * ccache status: installed and in use
Note: In the case of Ubuntu 12.10, the above might fail when it does not find a valid installation of JDK or JRE. It can be fixed by running sudo apt-get install openjdk-7-jre-headless, or any other openjdk-7 package of choice.
See Build Windows page.