Build OpenJDK 9

Build on native OS (from scratch)

Link to a detailed page on the Build step on the Adopt OpenJDK wiki.

Prerequisite: supporting programs to build OpenJDK8 have been installed before attempting to perform the below instructions, see site. Follow the below instructions to build OpenJDK9 from the jdk9 forest:

Build from existing repo or Ready-made VM image

$ cd $HOME/sources


$ cd $HOME/dev

If jdk9 or jdk9_dev does not exist in this folder, then do the below:

build JDK9 (non-Jigsaw)

$ hg clone jdk9


build Jigsaw JDK

$ hg clone jdk9

$ cd jdk9

$ chmod u+x 
$ ./
$ bash configure --with-boot-jdk=/usr/lib/jvm/jdk1.8.0 --disable-warnings-as-errors

/usr/lib/jvm/jdk1.8.0 - can differ in your case, please download JDK 8 at least from the site. It is recommended to use this JDK as it is better tested and free from any changes you might have made to the local copy of the OpenJDK8 sources & images.

If you are building on MacOSX (e.g. 10.9.0 or above), you might need to install XQuartz from this site and include the following options to run configure

$ bash configure --with-freetype-include=/usr/X11/include/freetype2 \
                --with-freetype-lib=/usr/X11/lib \
                --disable-warnings-as-errors \             

It is possible to get Oracle JDK 1.8 on Ubuntu by adding the repository of the Web Update 8 project, see instructions.

If you downloaded the virtual machine image then use this path:

$ bash configure --with-boot-jdk=/usr/lib/jvm/java-8-oracle --disable-warnings-as-errors
$ make clean images


$ make clean images LOG=debug     
                 ## to display DEBUG information

Check out the Nashorn forest for JDK9.

To build OpenJDK with build warnings enabled, see section Cleaning up build warnings.

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