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[](https://confluence.jetbrains.com/display/ALL/JetBrains+on+GitHub)
# Welcome to JetBrains Runtime!
JetBrains Runtime is a fork of [OpenJDK](https://github.com/openjdk/jdk) available for Windows, Mac OS X, and Linux.
It supports enhanced class redefinition ([DCEVM](https://ssw.jku.at/dcevm/)),
features optional [JCEF](https://github.com/JetBrains/jcef), a framework for embedding Chromium-based browsers,
includes a number of improvements in font rendering, keyboards support,
windowing/focus subsystems, HiDPI, accessibility, and performance, provides better desktop integration
and bugfixes not yet present in OpenJDK.
> **_NOTE_**: This is a **development** branch that is periodically synchronized with
> the [OpenJDK master](https://github.com/openjdk/jdk/tree/master) branch.
>
Release builds are based on these branches:
* [jbr11](https://github.com/JetBrains/JetBrainsRuntime/tree/jbr11) (JDK 11)
* [jbr17](https://github.com/JetBrains/JetBrainsRuntime/tree/jbr17) (JDK 17)
Download the latest releases of JetBrains Runtime to use with JetBrains IDEs. The full list
can be found on the [releases page](https://github.com/JetBrains/JetBrainsRuntime/releases).
## Releases based on JDK 17
| IDE Version | Latest JBR | Date Released |
|-------------|--------------------------------------------------------------------------------------------------------|---------------|
| 2023.1 | [17.0.6-b829.5](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-17.0.6b829.5) | 01-Mar-2023 |
| 2022.3 | [17.0.6-b653.34](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-17.0.6b653.34) | 28-Feb-2023 |
| 2022.2 | [17.0.6-b469.82](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr-release-17.0.6b469.82) | 06-Mar-2023 |
## Releases based on JDK 11
| IDE Version | Latest JBR | Date Released |
|-------------|-------------------------------------------------------------------------------------------------------|---------------|
| 2022.1 | [11_0_16-b2043.64](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr11_0_16b2043.64) | 10-Nov-2022 |
| 2021.3 | [11_0_14_1-b1751.46](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jbr11_0_14_1b1751.46) | 21-Feb-2022 |
| 2021.2 | [11_0_13-b1504.49](https://github.com/JetBrains/JetBrainsRuntime/releases/tag/jb11_0_13-b1504.49) | 15-Nov-2021 |
| 2021.1 | [11.0.11+9-b1341.60](https://github.com/JetBrains/JetBrainsRuntime/issues/171#issuecomment-1248891540)| 15-Jun-2021 |
| 2020.3 | [11_0_10-b1145.115](https://github.com/JetBrains/JetBrainsRuntime/issues/171#issuecomment-1249243977) | 21-Jun-2021 |
## Contents
- [Welcome to JetBrains Runtime](#welcome-to-jetbrains-runtime)
- [Why Use JetBrains Runtime?](#why-use-jetbrains-runtime)
- [Products Built on JetBrains Runtime](#products-built-on-jetbrains-runtime)
- [Getting Sources](#getting-sources)
- [macOS, Linux](#macos-linux)
- [Windows](#sources-windows)
- [Configuring the Build Environment](#configuring-the-build-environment)
- [Linux (Docker)](#linux-docker)
- [Ubuntu Linux](#ubuntu-linux)
- [Windows](#build-windows)
- [macOS](#macos)
- [Developing](#developing)
- [Contributing](#contributing)
- [Resources](#resources)
## Why Use JetBrains Runtime?
* **Embedded browser**: JetBrains Runtime includes the Java Chromium Embedded Framework ([JCEF](https://github.com/JetBrains/jcef)), which
enables you to embed a Chromium-based browsers in your JVM-based application.
To use it, [download a build with JCEF](https://github.com/JetBrains/JetBrainsRuntime/releases).
* **Enhanced class re-definition** with the [DCEVM](https://ssw.jku.at/dcevm/) technology that makes it easier to reload
changed code without restarting JVM; this feature needs to be explicitly enabled with `-XX:+AllowEnhancedClassRedefinition`.
* **Better FPS performance** for graphics-intensive applications.
* **Improved font rendering**, **keyboard input** (such as shortcuts and multinational keyboards),
**HiDPI** and **accessibility** support.
* **Robust desktop experience**: GUI-related fixes often reach JetBrains Runtime much earlier than the corresponding version of OpenJDK.
## Products Built on JetBrains Runtime
* [Android Studio](https://developer.android.com/studio). The official IDE for Google's Android operating system.
* [CLion](https://www.jetbrains.com/clion/). A cross-platform IDE for C and C++ from JetBrains.
* [DataGrip](https://www.jetbrains.com/datagrip/). The IDE for Databases and SQL from JetBrains.
* [GoLand](https://www.jetbrains.com/go/). The cross-platform Go IDE from JetBrains.
* [IntelliJ IDEA](https://www.jetbrains.com/idea/). The IDE for JVM from JetBrains.
* [JProfiler](https://www.ej-technologies.com/products/jprofiler/overview.html). The Java profiler.
* [PhpStorm](https://www.jetbrains.com/phpstorm/). The PHP IDE from JetBrains.
* [PyCharm](https://www.jetbrains.com/pycharm/). The Python IDE from JetBrains.
* [Rider](https://www.jetbrains.com/rider/). The cross-platform .NET IDE from JetBrains.
* [RubyMine](https://www.jetbrains.com/ruby/). The Ruby and Rails IDE from JetBrains.
* [Toolbox App](https://www.jetbrains.com/toolbox-app/). JetBrains IDE manager.
* [WebStorm](https://www.jetbrains.com/webstorm/). The JavaScript IDE from JetBrains.
* [YourKit](https://www.yourkit.com/). Java and .NET profilers.
## Getting Sources
### macOS, Linux
```
git config --global core.autocrlf input
git clone git@github.com:JetBrains/JetBrainsRuntime.git
cd JetBrainsRuntime
git checkout jbr21
```
### Windows
<a name="sources-windows"></a>
```
git config --global core.autocrlf false
git clone git@github.com:JetBrains/JetBrainsRuntime.git
cd JetBrainsRuntime
git checkout jbr21
```
## Configuring the Build Environment
Here are quick per-platform instructions for those who can't wait to get started.
Please refer to [OpenJDK build docs](https://openjdk.java.net/groups/build/doc/building.html) for in-depth
coverage of all the details.
> **_TIP:_** To get a preliminary report of what's missing, run `./configure` and check its output.
> It would usually have meaningful advice on how to solve the problem.
### Linux (Docker)
Create a container:
```
$ cd jb/project/docker
$ docker build .
...
Successfully built 942ea9900054
```
Run these commands in the new container:
```
$ docker run -v `pwd`../../../../:/JetBrainsRuntime -it 942ea9900054
# cd /JetBrainsRuntime
# sh ./configure
# make images CONF=linux-x86_64-normal-server-release
```
### Ubuntu Linux
Install the necessary tools, libraries, and headers with:
```
$ sudo apt-get install autoconf make build-essential libx11-dev libxext-dev libxrender-dev libxtst-dev \
libxt-dev libxrandr-dev libcups2-dev libfontconfig1-dev libasound2-dev
```
Get Java 19 (for instance, [Azul Zulu Builds of OpenJDK 19](https://www.azul.com/downloads/?version=java-19-sts&os=linux&package=jdk)).
Then run the following:
```
$ cd JetBrainsRuntime
$ git checkout main
$ sh ./configure
$ make images
```
This will build the release configuration under `./build/linux-x86_64-server-release/`.
### Windows
<a name="build-windows"></a>
Install the following:
* [Cygwin x64](http://www.cygwin.com/).
Required packages: `autoconf`, `binutils`, `cpio`, `diffutils`, `file`, `gawk`, `gcc-core`, `make`, `m4`, `unzip`, `zip`.
Install those together with Cygwin.
* [Visual Studio compiler toolset](https://visualstudio.microsoft.com/downloads/).
Install with the desktop development kit, which includes Windows SDK and compilers.
Visual Studio 2019 is supported by default.
* Java 19 (for instance, [Azul Zulu Builds of OpenJDK 19](https://www.azul.com/downloads/?version=java-19-sts&os=windows&package=jdk)).
If you have problems while configuring, read [Java tips on Cygwin](http://horstmann.com/articles/cygwin-tips.html).
From the command line:
```
"C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvarsall.bat" amd64
"c:\Program_Files\cygwin64\bin\mintty.exe" /bin/bash -l
```
The first command sets up environment variables, the second starts a Cygwin shell with the proper environment.
In the Cygwin shell:
```
$ cd JetBrainsRuntime
$ git checkout main
$ bash configure --with-toolchain-version=2019
$ make images
```
This will build the release configuration under `./build/windows-x86_64-server-release/`.
### macOS
Install the following:
* Xcode command line developer tools and `autoconf` via [Homebrew](https://brew.sh/).
* Java 19 (for instance, [Azul Zulu Builds of OpenJDK 19](https://www.azul.com/downloads/?version=java-19-sts&os=macos&package=jdk)).
From the command line:
```
$ cd JetBrainsRuntime
$ git checkout main
$ sh ./configure
$ make images
```
This will build the release configuration under `./build/macosx-x86_64-server-release/`.
## Developing
You can use [CLion](https://www.jetbrains.com/clion/) to develop native parts of the JetBrains Runtime and
[IntelliJ IDEA](https://www.jetbrains.com/idea/) for the parts written in Java.
Both require projects to be created.
### CLion
Run
```
$ make compile-commands
```
in the git root and open the resulting `build/.../compile_commands.json` file as a project.
Then use `Tools | Compilation Database | Change Project Root` to point to git root of this repository.
See also this detailed step-by-step tutorial for all platforms:
[How to develop OpenJDK with CLion](https://blog.jetbrains.com/clion/2020/03/openjdk-with-clion/).
### IDEA
Run
```
$ sh ./bin/idea.sh
```
in the git root to generate project files (add `--help` for options). If you have multiple
configurations (for example, `release` and `fastdebug`), supply the `--conf <conf_name>` argument.
Then open the git root directory as a project in IDEA.
## Contributing
We are happy to receive your pull requests!
Before you submit one, please sign our [Contributor License Agreement (CLA)](https://www.jetbrains.com/agreements/cla/).
## Resources
* [JetBrains Runtime on GitHub](https://github.com/JetBrains/JetBrainsRuntime).
* [OpenJDK build instructions](https://openjdk.java.net/groups/build/doc/building.html).
* [OpenJDK test instructions](https://htmlpreview.github.io/?https://raw.githubusercontent.com/openjdk/jdk/master/doc/building.html#running-tests).
* [How to develop OpenJDK with CLion](https://blog.jetbrains.com/clion/2020/03/openjdk-with-clion/).
|
