Why is build using Java 11?

Greetings, I am building the latest SVN version of ABCL on a Linux box. Here is what I am seeing: $ java -version openjdk version "1.8.0_322" OpenJDK Runtime Environment (build 1.8.0_322-b06) OpenJDK 64-Bit Server VM (build 25.322-b06, mixed mode) $ javac -version javac 1.8.0_322 $ env |grep JAVA $ ant [...] abcl.init: [echo] java.version: 11.0.14.1 [...] $ Why is the build using Java 11? Thanks! Blake McBride