How to Resolve Fatal Error When Building Libraries with JitPack

Описание: Learn how to fix the `Fatal error compiling: invalid target release` issue when publishing libraries to JitPack with step-by-step instructions!
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How to Resolve Fatal Error When Building Libraries with JitPack

Are you facing the dreaded fatal error while trying to publish your library to JitPack? Don't worry, you're not alone! Many developers encounter the same issue, which often stems from incorrect Java version configurations in their Maven project. In this guide, we'll walk you through a solution step-by-step, so you can get back to building and sharing your libraries smoothly.

Understanding the Problem

When attempting to compile your library, you may see an error message like this:

[[See Video to Reveal this Text or Code Snippet]]

What Causes This Error?

This error indicates that the JitPack environment doesn't support the Java version specified in your project configuration. In the example above, it appears to be trying to use Java 14, which JitPack does not currently support.

Why JitPack Might Be Using Older Java Versions

JitPack primarily supports Java 8, which explains the incompatibility when you're trying to use a version like Java 14 or higher. Attempting to compile using a mismatched version can result in compilation failures.

The Solution: Adjust Your Project Configuration

To resolve this issue, follow these steps to configure your project to work with JitPack:

Step 1: Create a JitPack Configuration File

In the root directory of your project, create a new file named jitpack.yml. This file will specify the Java version you need for your project.

Step 2: Add the Java Configuration Details

Open the jitpack.yml file and add the following content:

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Explanation of the Configuration

jdk: This section lets you define the specific Java Development Kit (JDK) version you want to use.

before_install: This section specifies commands to run before the build starts. Here, you're telling JitPack to install a specific JDK version (Java 18 in this case).

Step 3: Verify Available Java Versions

If you need to check which Java versions are available for installation, you can add the following line to the before_install section:

[[See Video to Reveal this Text or Code Snippet]]

This command will output a list of available Java versions directly in the JitPack build logs, so you can choose one that fits your project's needs.

Conclusion

By following these steps, you can quickly resolve the fatal error compiling: invalid target release message and successfully publish your library to JitPack. Remember to keep your Java version in sync with what JitPack supports for a hassle-free experience in the future.

If you have any further questions or run into issues, feel free to leave a comment below. Happy coding!