all_java_sources := $(patsubst src/%.java, build/java/%.java, $(shell find src -name '*.java'))
all_java_sources += $(patsubst src/%.java.pp, build/java/%.java, $(shell find src -name \*.java.pp))
all_java_sources := $(patsubst src/%.java, build/java/%.java, $(shell find src -name '*.java'))
all_java_sources += $(patsubst src/%.java.pp, build/java/%.java, $(shell find src -name \*.java.pp))