--- runtime/bin/setenv.orig	2018-12-17 01:24:37 UTC
+++ runtime/bin/setenv
@@ -139,6 +139,9 @@ locateJava() {
     if [ "x${JAVA}" = "x" ] && [ -r /etc/gentoo-release ] ; then
         JAVA_HOME=$(java-config --jre-home)
     fi
+    if [ "x$JAVA_HOME" = "x" ]; then
+        eval $(env JAVAVM_DRYRUN=true %%LOCALBASE%%/bin/java | grep JAVA_HOME)
+    fi
     if [ "x${JAVA}" = "x" ]; then
         if [ "x${JAVA_HOME}" != "x" ]; then
             if [ ! -d "${JAVA_HOME}" ]; then