java_classes := $(java_sources:build/java/%.java=build/class/%.class)
java_classes += build/class/gnu/regexp/CharUnit.class build/class/gnu/regexp/IntPair.class
+java_classes += build/class/org/ibex/util/MIPSApps.class
.PRECIOUS: $(java_classes) $(java_sources) *.java upstream/org.ibex.crypto/src/org/ibex/crypto/DER.java