+ @test -e build/class/org/ibex/util/Preprocessor.class || \
+ $(javac) src/org/ibex/util/Preprocessor.java \
+ src/org/ibex/util/Vec.java upstream/gnu.regexp-1.1.4/src/src/gnu/regexp/*.java
+ @echo $(java_sources) | tr ' ' '\n' | sed 's_build/java/_ _' | sed 's_/_._g' | sed 's_.java$$__g'
+ @$(javac) $(java_sources) -d build/class
+