Building from source

Linux and MacOS

To build the clj-kondo binary from source:

• Download GraalVM java11 21.0.0. Currently clj-kondo can only be built with java11 based graal VMs, so using JDK 8 builds will not work.

• Set the GRAALVM_HOME variable. E.g.:

    export GRAALVM_HOME=$HOME/Downloads/graalvm-ce-java11-21.0.0/Contents/Home
  

• git clone this repo and cd clj-kondo

• Finally:

    script/compile
  

Place the binary somewhere on your path.

Optional steps

These steps are only necessary to update resources that are shipped with clj-kondo.

• To update the built-in cache for Clojure and ClojureScript:

    script/built-in
  

• JDK 12 is needed only in this step. To update static method information from commonly used Java classes:

  JAVA_HOME=<path to JDK 12> script/extract-java
  

  where JDK 12 is located in e.g. ~/Downloads/jdk-12.jdk/Contents/Home.

Windows

These steps assume a Windows 10 installation with Git for Windows and leiningen. We will be using the java version that comes with GraalVM, so there is no need to install it separately.

• Download GraalVM 21.0.0.

• Install the Windows SDK 7.1. See this link for an explanation of which image is which.

  You might first have to:

  • Uninstall any Visual C++ 2010 Redistributables from the control panel. See this SO answer.

  After installation of Windows SDK 7.1, you may also have to:

  • Install Microsoft Visual C++ 2010 Service Pack 1 Compiler Update for the Windows SDK 7.1", because it may not have been installed with the Windows SDK 7.1 due to an unfortunate situation.

The following steps need to be executed from the Windows SDK 7.1 command prompt.

• set the GRAALVM_HOME environment variable:

    set GRAALVM_HOME=C:\Users\IEUSer\Downloads\graalvm-ce-21.0.0
  

• git clone this repo and cd clj-kondo

• Run script\compile.bat

If the script finished successfully, there is now a clj-kondo.exe in the current directory. Place the binary somewhere on your path.