--- build_core.xml.orig	2020-06-13 00:09:40.000000000 +0200
+++ build_core.xml	2020-06-17 15:54:22.945551353 +0200
@@ -60,15 +60,15 @@
   <path id="classpath.base">
     <pathelement location="library/jogl-all.jar" />
     <pathelement location="library/gluegen-rt.jar" />
-    <pathelement location="library/javafx-swt.jar" />
-    <pathelement location="library/javafx.base.jar" />
-    <pathelement location="library/javafx.controls.jar" />
-    <pathelement location="library/javafx.fxml.jar" />
-    <pathelement location="library/javafx.graphics.jar" />
-    <pathelement location="library/javafx.media.jar" />
-    <pathelement location="library/javafx.properties" />
-    <pathelement location="library/javafx.swing.jar" />
-    <pathelement location="library/javafx.web.jar" />
+    <pathelement location="/usr/lib/jvm/java-11-openjdk/lib/javafx-swt.jar" />
+    <pathelement location="/usr/lib/jvm/java-11-openjdk/lib/javafx.base.jar" />
+    <pathelement location="/usr/lib/jvm/java-11-openjdk/lib/javafx.controls.jar" />
+    <pathelement location="/usr/lib/jvm/java-11-openjdk/lib/javafx.fxml.jar" />
+    <pathelement location="/usr/lib/jvm/java-11-openjdk/lib/javafx.graphics.jar" />
+    <pathelement location="/usr/lib/jvm/java-11-openjdk/lib/javafx.media.jar" />
+    <pathelement location="/usr/lib/jvm/java-11-openjdk/lib/javafx.properties" />
+    <pathelement location="/usr/lib/jvm/java-11-openjdk/lib/javafx.swing.jar" />
+    <pathelement location="/usr/lib/jvm/java-11-openjdk/lib/javafx.web.jar" />
   </path>
 
   <path id="classpath.test">