Makefile for Java projects using GNU make

javamake.mk

# JavaプロジェクトのためのGNU make用Makefile
# usage:
#
# 		PROJECT_NAME = "Sample Project"
# 		MAIN_PACKAGES = org.example.proj.core org.example.proj.gui
# 		TEST_PACKAGES = org.example.proj.test
# 		JAVADOCLINKS = -link "http://docs.oracle.com/javase/jp/7/api"
# 		
# 		include some-directory/javamake.mk
#
# 上の例の変数4つは必須.
# 環境変数CLASSPATHにはJUnitへのパスが含まれている必要がある.

PATH_SEPARATOR ?= :
MAIN = src/main/java
TEST = src/test/java
TARGET = target
CP = -classpath "$(TARGET)$(PATH_SEPARATOR)$(CLASSPATH)"
ENCODING = -encoding UTF-8
JAVAC = javac -d $(TARGET) $(ENCODING) $(JAVACFLAGS)

all: $(patsubst $(MAIN)/%.java, $(TARGET)/%.class, \
  $(foreach rel, \
    $(subst .,/, $(MAIN_PACKAGES)), \
    $(subst $(MAIN)/$(rel)/package-info.java, , \
      $(wildcard $(MAIN)/$(rel)/*.java))))

TEST_SRCS = $(foreach rel, $(subst .,/, $(TEST_PACKAGES)), \
	$(wildcard $(TEST)/$(rel)/*Test.java))
check: all $(patsubst $(TEST)/%.java, $(TARGET)/%.class, $(TEST_SRCS))
	java $(CP) org.junit.runner.JUnitCore \
	$(subst /,., $(patsubst $(TEST)/%.java, %, $(TEST_SRCS)))

javadoc:
	javadoc -overview src/main/javadoc/overview.html \
	-sourcepath "$(TEST)$(PATH_SEPARATOR)$(MAIN)" $(CP) $(ENCODING) \
	-d $(TARGET)/apidocs -use -windowtitle $(PROJECT_NAME) \
	$(JAVADOCLINKS) -charset UTF-8 $(JAVADOCFLAGS) \
	$(MAIN_PACKAGES) $(TEST_PACKAGES)

$(TARGET)/%.class: $(MAIN)/%.java
	$(JAVAC) -cp $(TARGET) -sourcepath $(MAIN) $<

$(TARGET)/%.class: $(TEST)/%.java
	$(JAVAC) $(CP) -sourcepath $(TEST) $<