Native API

The Native API offers a JkNativeCompilation class that creates an executable file from compiled classes or JARs.

An easy way to use it is by passing a JkProject when instantiating. This setup prepares everything for native compilation. The class automatically downloads GraalVM, which includes the nativeImage executable used for compiling to native - you don't need to care about GraalVM installation.

It also provides helpful methods to add resources to the native executable.

Exemple

JkProject project = ...

JkNativeCompilation.of(project.asBuildable()
    .setIncludesAllResources(true)
    .make(Paths.get("build/my-app.exe"));

This code performs the following actions: - Checks if the system is running on GraalVM. If not, it fetches the latest GraalVM version (if not already available). - Includes all project resources located in src/main/resources. - Fetches the metadata repository and adds it to the compilation classpath. - Uses the native-image GraalVM tool to compile the application into a native binary.

By default, JeKa will fetch GraalVM using the Foodjay API unless the JEKA_GRAALVM_HOME environment variable is set.
If the environment variable's value starts with DOWNLOAD_ (e.g., DOWNLOAD_21), the specified GraalVM version will be downloaded from the internet.