You must meet the following requirements:
JDK11 as a minimum
You may use the included gradle wrapper script if you don’t have
Adapt these instructions to Windows settings if running on Windows.
Download Gradle from http://gradle.org/downloads
Unzip the file into a directory without spaces (recommended).
Create a GRADLE_HOME environment variable that points to this directory.
Adjust your PATH environment variable to include $GRADLE_HOME/bin (%GRADLE_HOME%\bin on Windows).
Test your setup by invoking
Gum is a wrapper script that facilitates invoking gradle tasks anywhere within a Gradle project. It’s smart enough to use the gradle wrapper if available or your global gradle command. This is an optional download.
Follow the instructions found at https://github.com/kordamp/gm to install gum
Make a full build issuing
Run the sampler JavaFX application by invoking the following command
$ gm :sampler-javafx:run
Run the sampler Swing application by invoking the following command
$ gm :sampler-swing:run
Run the Ikonli Browser application by invoking the following command
$ gm :ikonli-browser:run
Publishing your own SNAPSHOT
You can publish a local snapshot release by issuing this command
$ gm install
If you don’t Gum installed then issue this command
$ ./gradlew publishToMavenLocal