AdoptOpenJDK community OpenJDK build scripts - common across all releases/versions
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README.md

Repository for code and instructions for building OpenJDK

Build Status Slack

AdoptOpenJDK makes use of these scripts to build binaries on the build farm at https://ci.adoptopenjdk.net, which produces OpenJDK binaries for consumption via https://www.adoptopenjdk.net and https://api.adoptopenjdk.net.

TLDR I want to build a JDK NOW!

Build jdk natively on your system
./makejdk-any-platform.sh <jdk8u|jdk9u|jdk10u|jdk11u>
i.e:
./makejdk-any-platform.sh jdk8u
Build jdk inside a docker container
./makejdk-any-platform.sh --docker jdk8u

If you need sudo to run docker on your system.

./makejdk-any-platform.sh --sudo --docker jdk8u

Build

The build has 2 modes, native and docker.

Native

Native builds run on whatever platform the script is invoked on, i.e if you invoke a native build on MacOS it will build a JDK for MacOS.

Docker

This runs a build inside a docker container. Currently this will always build a linux JDK.

Repository contents

This repository contains several useful scripts in order to build OpenJDK personally or at build farm scale.

  1. The build-farm folder contains shell scripts for multi configuration Jenkins build jobs used for building Adopt OpenJDK binaries. TODO This may get removed.
  2. The docker folder contains DockerFiles which can be used as part of building OpenJDK inside a Docker container.
  3. The git-hg folder contains scripts to clone an OpenJDK mercurial forest into a GitHub repo ()and regularly update it).
  4. The images folder contains diagrams to aid understanding.
  5. The mercurial-tags/java-tool folder contains scripts for TODO.
  6. The pipelines folder contains the Groovy pipeline scripts for Jenkins (e.g. build | test | checksum | release).
  7. The sbin folder contains the scripts that actually build (AdoptOpenJDK). build.sh is the entry point which can be used stand alone but is typically called by the native-build.sh or docker-build.sh scripts (which themselves are typically called by makejdk-any-platform.sh).
  8. The security folder contains a script and cacerts file that is bundled with the JDK and used when building OpenJDK: the cacerts file is an important file that's used to enable SSL connections.

The makejdk-any-platform.sh script

makejdk-any-platform.sh is the entry point for building (Adopt) OpenJDK binaries. Building natively or in a docker container are both supported. This script (and its supporting scripts) have defaults, but you can override these as needed. The scripts will auto detect the platform and architecture it is running on and configure the OpenJDK build accordingly. The supporting scripts will also download and locally install any required dependencies for the OpenJDK build, e.g. The ALSA sound and Freetype font libraries.

Many of the configuration options are passed through to the configure and make commands that OpenJDK uses to build binaries. Please see the appropriate README-builds.html file for the OpenJDK source repository that you are building.

NOTE: Usage can be found via makejdk-any-platform.sh --help. Here is the man page re-formatted for convenience.

USAGE

./makejdk-any-platform [options] version

Please visit https://www.adoptopenjdk.net for further support.

VERSIONS

jdk8u - Build Java 8, defaults to https://github.com/AdoptOpenJDK/openjdk-jdk8u
jdk9u - Build Java 9, defaults to https://github.com/AdoptOpenJDK/openjdk-jdk9u
jdk10u - Build Java 10, defaults to https://github.com/AdoptOpenJDK/openjdk-jdk10u
jdk11u - Build Java 11, defaults to https://github.com/AdoptOpenJDK/openjdk-jdk11u
jfx - Build OpenJFX, defaults to https://github.com/AdoptOpenJDK/openjdk-jfx
amber - Build Project Amber, defaults to https://github.com/AdoptOpenJDK/openjdk-amber

OPTIONS

-b, --branch <branch>
specify a custom branch to build from, e.g. dev.
For reference, AdoptOpenJDK GitHub source repos default to the dev
branch which may contain a very small diff set to the master branch
(which is a clone from the OpenJDK mercurial forest).

-B, --build-number <build_number>
specify the OpenJDK build number to build from, e.g. b12.
For reference, OpenJDK version numbers look like 1.8.0_162-b12 (for Java 8) or
9.0.4+11 (for Java 9+) with the build number being the suffix at the end.

--build-variant <variant_name>
specify a OpenJDK build variant, e.g. openj9.
For reference, the default variant is hotspot and does not need to be specified.

-c, --clean-docker-build
removes the existing docker container and persistent volume before starting
a new docker based build.

-C, --configure-args <args>
specify any custom user configuration arguments.

--clean-git-repo
clean out any 'bad' local git repo you already have.

-d, --destination <path>
specify the location for the built binary, e.g. /path/.
This is typically used in conjunction with -T to create a custom path
/ file name for the resulting binary.

-D, --docker
build OpenJDK in a docker container.

--debug-docker
debug OpenJDK build script in a docker container. Only valid if -D is selected.

--disable-shallow-git-clone
disable the default fB--depth=1 shallow cloning of git repo(s).

-f, --freetype-dir
specify the location of an existing FreeType library.
This is typically used in conjunction with -F.

--freetype-build-param <parameter>
specify any special freetype build parameters (required for some OS's).
 
--freetype-version <version>
specify the version of freetype you are building.

-F, --skip-freetype
skip building Freetype automatically.
This is typically used in conjunction with -f.

-h, --help
print the man page.

-i, --ignore-container
ignore the existing docker container if you have one already.

-J, --jdk-boot-dir <jdk_boot_dir>
specify the JDK boot dir.
For reference, OpenJDK needs the previous version of a JDK in order to build
itself. You should select the path to a JDK install that is N-1 versions below
the one you are trying to build.

-k, --keep
if using docker, keep the container after the build.

-n, --no-colour
disable colour output.

-p, --processors <args>
specify the number of processors to use for the docker build.

-r, --repository <repository>
specify the repository to clone OpenJDK source from,
e.g. https://github.com/karianna/openjdk-jdk8u.

-s, --source <path>
specify the location to clone the OpenJDK source (and dependencies) to.

-S, --ssh
use ssh when cloning git. 
In case of docker build add github.com to ~/.ssh/known_hosts (e.g.: ssh github.com)
if your ssh key has a passphrase, add it to ssh-agent (e.g.: ssh-add ~/.ssh/id_rsa)

--sign
sign the OpenJDK binary that you build.

--sudo
run the docker container as root.

-t, --tag <tag>
specify the repository tag that you want to build OpenJDK from.

-T, --target-file-name <file_name>
specify the final name of the OpenJDK binary.
This is typically used in conjunction with -D to create a custom file
name for the resulting binary.

--tmp-space-build
use the temp directory for performing the build

-u, --update-version <update_version>
specify the update version to build OpenJDK from, e.g. 162.
For reference, OpenJDK version numbers look like 1.8.0_162-b12 (for Java 8) or
9.0.4+11 (for Java 9+) with the update number being the number after the '_'
(162) or the 3rd position in the semVer version string (4).
This is typically used in conjunction with -b.

--use-jep319-certs
Use certs defined in JEP319 in Java 8/9. This will increase the volume of traffic downloaded, however will 
provide an upto date ca cert list.

-v, --version
specify the OpenJDK version to build e.g. jdk8u.  Left for backwards compatibility.

-V, --jvm-variant <jvm_variant>
specify the JVM variant (server or client), defaults to server.

Example usage:

./makejdk-any-platform --docker jdk8u
./makejdk-any-platform -T MyOpenJDK10.tar.gz jdk10

Script Relationships

Build Variant Workflow

The main script to build OpenJDK is makejdk-any-platform.sh, which itself uses and/or calls configureBuild.sh, docker-build.sh and/or native-build.sh.

The structure of a build is:

  1. Configuration phase determines what the configuration of the build is based on your current platform and and optional arguments provided
  2. Configuration is written out to built_config.cfg
  3. Build is kicked off by either creating a docker container or running the native build script
  4. Build reads in configuration from built_config.cfg
  5. Downloads source, dependencies and prepares build workspace
  6. Configure and invoke OpenJDK build via make
  7. Package up built artifacts
  • Configuration phase is primarily performed by configureBuild.sh and makejdk-any-platform.sh.
  • If a docker container is required it is built by docker-build.sh.
  • In the build phase sbin/build.sh is invoked either natively or inside the docker container. sbin/build.sh invokes sbin/prepareWorkspace.sh to download dependencies, source and perform general preparation.
  • Rest of the build and packaging is then handled from sbin/build.sh

Building OpenJDK

Building on the Build Farm

In order to build an OpenJDK variant on the build farm you need to follow the Adding-a-new-build-variant instructions. The configuration options are often set in the Jenkins job and passed into makejdk-any-platform.sh script.

Note that the build nodes (list of hosts on the LH side) also have configuration where things like the BOOT_JDK environment variable is set.

Building via Docker in your local environment

The simplest way to build OpenJDK using these scripts is to run makejdk-any-platform.sh and have your user be in the Docker group on the machine (or use the --sudo option to prefix all of your Docker commands with sudo). This script will create a Docker container that will be configured with all of the required dependencies and a base operating system in order to build OpenJDK.

Make sure you have started your Docker Daemon first! For help with getting docker follow the instructions here. Once you have Docker started you can then use the script below to build OpenJDK.

Example Usage (TODO Add example of openj9):

./makejdk-any-platform.sh --docker --sudo jdk8u

Configuring Docker for non sudo use

To use the Docker commands without using the --sudo option, you will need to be in the Docker group which can be achieved with the following three commands (performed as root)

  1. sudo groupadd docker: creates the Docker group if it doesn't already exist
  2. sudo gpasswd -a yourusernamehere docker: adds a user to the Docker group
  3. sudo service docker restart: restarts the Docker service so the above changes can take effect

Building natively in your local environment

Please note that your build host will need to have certain pre-requisites met.
We provide Ansible scripts in the openjdk-infrastructure project for setting these pre-requisites.

Example Usage (TODO Add example of openj9):

./makejdk-any-platform.sh -s /home/openjdk10/src -d /home/openjdk/target -T MyOpenJDK10.tar.gz jdk10

This would clone OpenJDK source from https://github.com/AdoptOpenJDK/openjdk-jdk10 to /home/openjdk10/src, configure the build with sensible defaults according to your local platform and then build (Adopt) OpenJDK and place the result in /home/openjdk/target/MyOpenJDK10.tar.gz.

Building OpenJDK from a non Adopt source

These scripts default to using AdoptOpenJDK as the OpenJDK source repo to build from, but you can override this with the -r flag.

#Metadata This is still in alpha do not rely on this yet Alongside the built assets a metadata file will be created with info about the build. This will be a JSON document of the form:

    {
        "WARNING": "THIS METADATA FILE IS STILL IN ALPHA DO NOT USE ME",
        "os": "linux",
        "arch": "x64",
        "variant": "hotspot",
        "version": "jdk8u",
        "tag": "jdk8u202-b08",
        {
            "adopt_build_number": 2,
            "major": 8,
            "minor": 0,
            "security": 202,
            "build": 8,
            "version": "8u202-b08",
            "semver": "8.0.202+8.2",
        },
        "binary_type": "jdk"
    }

It is worth noting the additional tags on the semver is the adopt build number.

Build farm

The documentation for files that define the build farm builds can be found at Build Farm Definition.

Build status

Table generated with generateBuildMatrix.sh

Platform Java 8 Java 9 Java 10 Java 11
aix-ppc64-hotspot Build Status Build Status Build Status Build Status
aix-ppc64-openj9 Build Status Build Status Build Status Build Status
linux-aarch64-hotspot N/A Build Status Build Status Build Status
linux-arm-hotspot N/A N/A Build Status Build Status
linux-ppc64le-hotspot Build Status Build Status Build Status Build Status
linux-ppc64le-openj9 Build Status Build Status Build Status Build Status
linux-s390x-hotspot Build Status Build Status Build Status Build Status
linux-s390x-openj9 Build Status Build Status Build Status Build Status
linux-x64-hotspot Build Status Build Status Build Status Build Status
linux-x64-openj9 Build Status Build Status Build Status Build Status
linux-x64-openj9-linuxXL Build Status Build Status Build Status Build Status
mac-x64-hotspot Build Status Build Status Build Status Build Status
windows-x64-hotspot Build Status Build Status Build Status Build Status
windows-x64-openj9 Build Status Build Status Build Status Build Status