These instructions will help you build IntelliJ IDEA Community Edition from source code, which is the basis for IntelliJ Platform development. The following conventions will be used to refer to directories on your machine:
<USER_HOME>
is your home directory.<IDEA_HOME>
is the root directory for the IntelliJ source code.
IntelliJ IDEA Community Edition source code is available from github.com/JetBrains/intellij-community
by either cloning or
downloading a zip file (based on a branch) into <IDEA_HOME>
. The default is the master branch.
The master branch contains the source code which will be used to create the next major version of IntelliJ IDEA. The branch names and build numbers for older releases of IntelliJ IDEA can be found on the page of Build Number Ranges.
These Git operations can also be done through the IntelliJ IDEA user interface.
Speed Tip: If the complete repository history isn't needed then using a shallow clone (git clone --depth 1
) will save significant time.
On Windows: Two git options are required to check out sources on Windows. Since it's a common source of Git issues on Windows anyway, those options could be set globally (execute those commands before cloning any of intellij-community/android repositories):
git config --global core.longpaths true
git config --global core.autocrlf input
IntelliJ IDEA Community Edition requires additional Android modules from separate Git repositories. To clone these repositories,
run one of the getPlugins
scripts located in the <IDEA_HOME>
directory. These scripts clone their respective master branches. Make sure you are inside the <IDEA_HOME>
directory when running those scripts, so the modules get cloned inside the <IDEA_HOME>
directory.
getPlugins.sh
for Linux or macOS.getPlugins.bat
for Windows.
Note: Always git checkout
the intellij-community
and android
Git repositories to the same branches/tags.
Version 2022.1 or newer of IntelliJ IDEA Community Edition or IntelliJ IDEA Ultimate Edition is required to build and develop for the IntelliJ Platform.
Using IntelliJ IDEA File | Open, select the <IDEA_HOME>
directory.
- If IntelliJ IDEA displays an error about a missing or out of date required plugin (e.g. Kotlin), enable, upgrade, or install that plugin and restart IntelliJ IDEA.
- If IntelliJ IDEA displays an error about a Gradle configuration not found, refresh the Gradle projects.
- It's recommended to use JetBrains Runtime 17 to compile the project. When you invoke Build Project for the first time, IntelliJ IDEA should suggest downloading it automatically.
- If the Maven plugin is disabled, add the path variable
"MAVEN_REPOSITORY" pointing to
<USER_HOME>/.m2/repository
directory. - Speed Tip: If you have enough RAM on your computer, configure the compiler settings to enable the "Compile independent modules in parallel" option and set "User-local build process heap size" to 3000. These changes will greatly reduce compilation time.
To build IntelliJ IDEA Community Edition from source, choose Build | Build Project from the main menu.
To build installation packages, run the installers.cmd
command in <IDEA_HOME>
directory. installers.cmd
will work on both Windows and Unix systems.
Options to build installers are passed as system properties to installers.cmd
command.
You may find the list of available properties in BuildOptions.kt
Examples (./
should be added only for Linux/macOS):
- Build installers only for current operating system:
./installers.cmd -Dintellij.build.target.os=current
- Build source code incrementally (do not build what was already built before):
./installers.cmd -Dintellij.build.incremental.compilation=true
installers.cmd
is used just to run OpenSourceCommunityInstallersBuildTarget from the command line.
You may call it directly from IDEA, see run configuration Build IDEA Community Installers (current OS)
for an example.
To run the IntelliJ IDEA built from source, choose Run | Run from the main menu. This will use the preconfigured run configuration "IDEA".
To run tests on the build, apply these setting to the Run | Edit Configurations... | Templates | JUnit configuration tab:
- Working dir:
<IDEA_HOME>/bin
- VM options:
-ea
You can find other helpful information at https://www.jetbrains.com/opensource/idea. The "Contribute Code" section of that site describes how you can contribute to IntelliJ IDEA.
To run tests outside of IntelliJ IDEA, run the tests.cmd
command in <IDEA_HOME>
directory. tests.cmd
will work on both Windows and Unix systems.
Options to run tests are passed as system properties to tests.cmd
command.
You may find the list of available properties in TestingOptions.kt
Examples (./
should be added only for Linux/macOS):
- Build source code incrementally (do not build what was already built before):
./tests.cmd -Dintellij.build.incremental.compilation=true
- Run a specific test:
./tests.cmd -Dintellij.build.test.patterns=com.intellij.util.ArrayUtilTest
tests.cmd
is used just to run CommunityRunTestsBuildTarget from the command line.
You may call it directly from IDEA, see run configuration tests in community
for an example.