- compile for the specified Java SE release

Makefile

@@ -3,7 +3,8 @@
 # Plugin, welches TIFFs via checkit_tiff validiert
 
 # Pfad zu Java 11
-JAVAPATH=$(wildcard /usr/lib/jvm/java-1.11.0-openjdk-*/bin/)
+JAVAPATH=/usr/lib/jvm/java-11-*/bin
+JAVARELEASE=11
 
 # Verwendete Rosetta-Version
 ROSETTAVERSION=7.1.0
@@ -62,7 +63,7 @@ $(JAR): $(OBJS)
 	@cd $(BUILD); ${JAVAPATH}/jar cfvM ../$@ ./* ; cd ..
 
 %.class: %.java
-	${JAVAPATH}/javac -classpath ${CLASSPATH}:${JUNITCLASSPATH} -Xlint:all $< 
+	${JAVAPATH}/javac --release ${JAVARELEASE} -g -classpath ${CLASSPATH}:${JUNITCLASSPATH} -Xlint:all $<
 
 doc: $(SOURCES)
 	javadoc -d doc/ $^