Java Makefile

MAINCLASS :=

# Execulables
JAVAC := javac
JAVA := java
JDB := jdb
JAVADOC := javadoc

# Folders
SRCDIR := src/
BINDIR := bin/
DOCDIR := doc/

# All folders under SRCDIR are packages
PACKAGES := $(sort $(dir $(wildcard $(SRCDIR)*/)))

SRCS := $(foreach sdir,$(PACKAGES),$(wildcard $(sdir)*.java))
BINS := $(patsubst $(SRCDIR)%.java,$(BINDIR)%.class,$(SRCS))

all: $(BINS)

$(BINDIR)%.class: $(SRCDIR)%.java
    @echo $(subst /,.,$(patsubst $(SRCDIR)%.java,%,$<))
    @mkdir -p $(BINDIR)
    @$(JAVAC) -classpath $(SRCDIR) -d $(BINDIR) $<

doc: $(SRCS)
    @echo Building Javadoc
    @mkdir -p $(DOCDIR)
    @$(JAVADOC) -classpath $(SRCDIR) -d $(DOCDIR) -html5 -quiet app game

clean:
    @rm -rf $(BINDIR) $(DOCDIR)

# Run normally
run:
    @$(JAVA) -classpath $(BINDIR) $(MAINCLASS)

# Run in debugger
debug:
    @$(JDB) -sourcepath $(SRCDIR) -classpath $(BINDIR) $(MAINCLASS)