java/android makefile

Makefile

JAR_PKG = JarName.jar
CP = cp

#change this to fit the version of installed android sdk on build system
API_LEVEL=22

#unity expects jdk 1.6
JFLAGS = -cp ${jar_file} -g -source 1.6 -target 1.6
JC = javac
JAR = jar
JARFLAGS = cvf

OUTPUT = bin

.SUFFIXES: .java .class .jar
.PHONY: clean copy-jar-to-resources check-android-home
.DEFAULT_GOAL := default

SOURCES=$(wildcard **/*.java)
CLASSES=$(patsubst %.java,%.class,$(SOURCES))

.java.class:
		$(JC) $(JFLAGS) $*.java

default: output-jar

compile-java: check-android-home $(CLASSES)

compile-jar: compile-java
		$(JAR) $(JARFLAGS) $(JAR_PKG) $(CLASSES)

output-jar: compile-jar
		cp ${JAR_PKG} ${OUTPUT}

clean:
		$(RM) *.class *.jar

check-android-home:
ifndef ANDROID_HOME
	$(error ANDROID_HOME env var is not set, android sdk is expected at this location)
endif
jar_file := $(ANDROID_HOME)/platforms/android-${API_LEVEL}/android.jar