SGL Android

Building SGL for Android is getting quite challenging due to the divergence between Android and Scala. The last version of Scala that can still target Android is 2.11.12 (pretty old yeah). In addition, the sbt-android plugin is not compatible with SBT 1.0, so we need to use the latest 0.13.18 SBT version.

To make things worse, these versions of SBT and Scala interacts weirdly with Java 9+, so in order to run sbt properly and build the library and a game APK, you need to run the Java 8 SDK (yes, from a different epoque). Also it seems like the latest Android tools for Linux requires at least Java 11 to use (for things like sdkmanager and other command-line tools), so you will have fun switching between multiple java version.

Anyway, good luck.

In Summary

• Run regular sbt for the core projects, but build artifacts to target Scala 2.11.12.
• Run sbt version 0.13.18 with Java 8 for the android/ project. Build artifacts to target Scala 2.11.12.
• Run Android CLI tools with Java 11 (not all need it, but at least sdkmanager).
• Android SDK must be downloaded and installed in home directory, then set ANDROID_HOME to the root. The sbt-android plugin should use this and automatically download what it needs.

How to use

TODO, extract important parts of https://github.com/scala-android/sbt-android for how to package/sign/release