# ---------- Java support using SWIG ----------
.PHONY: help_java # Generate list of Java targets with descriptions.
help_java:
	@echo Use one of the following Java targets:
ifeq ($(SYSTEM),win)
	@$(GREP) "^.PHONY: .* #" $(CURDIR)/makefiles/Makefile.java.mk | $(SED) "s/\.PHONY: \(.*\) # \(.*\)/\1\t\2/"
	@echo off & echo(
else
	@$(GREP) "^.PHONY: .* #" $(CURDIR)/makefiles/Makefile.java.mk | $(SED) "s/\.PHONY: \(.*\) # \(.*\)/\1\t\2/" | expand -t24
	@echo
endif

JAVA_OR_TOOLS_LIBS= $(LIB_DIR)/com.google.ortools$J $(LIB_DIR)/$(LIB_PREFIX)jniortools.$(JNI_LIB_EXT)
JAVAFLAGS = -Djava.library.path=$(LIB_DIR)

JAR = \
$(LIB_DIR)/AllDifferentExcept0$J \
$(LIB_DIR)/AllInterval$J \
$(LIB_DIR)/CapacitatedVehicleRoutingProblemWithTimeWindows$J \
$(LIB_DIR)/Circuit$J \
$(LIB_DIR)/CoinsGrid$J \
$(LIB_DIR)/CoinsGridMIP$J \
$(LIB_DIR)/ColoringMIP$J \
$(LIB_DIR)/CoveringOpl$J \
$(LIB_DIR)/Crossword$J \
$(LIB_DIR)/DeBruijn$J \
$(LIB_DIR)/Diet$J \
$(LIB_DIR)/DietMIP$J \
$(LIB_DIR)/DivisibleBy9Through1$J \
$(LIB_DIR)/FlowExample$J \
$(LIB_DIR)/GolombRuler$J \
$(LIB_DIR)/IntegerProgramming$J \
$(LIB_DIR)/Issue173$J \
$(LIB_DIR)/Knapsack$J \
$(LIB_DIR)/KnapsackMIP$J \
$(LIB_DIR)/LeastDiff$J \
$(LIB_DIR)/LinearAssignmentAPI$J \
$(LIB_DIR)/LinearProgramming$J \
$(LIB_DIR)/LsApi$J \
$(LIB_DIR)/MagicSquare$J \
$(LIB_DIR)/Map2$J \
$(LIB_DIR)/Map$J \
$(LIB_DIR)/Minesweeper$J \
$(LIB_DIR)/MultiThreadTest$J \
$(LIB_DIR)/NQueens2$J \
$(LIB_DIR)/NQueens$J \
$(LIB_DIR)/Partition$J \
$(LIB_DIR)/QuasigroupCompletion$J \
$(LIB_DIR)/RabbitsPheasants$J \
$(LIB_DIR)/SendMoreMoney2$J \
$(LIB_DIR)/SendMoreMoney$J \
$(LIB_DIR)/SendMostMoney$J \
$(LIB_DIR)/Seseman$J \
$(LIB_DIR)/SetCovering2$J \
$(LIB_DIR)/SetCovering3$J \
$(LIB_DIR)/SetCovering4$J \
$(LIB_DIR)/SetCoveringDeployment$J \
$(LIB_DIR)/SetCovering$J \
$(LIB_DIR)/SimpleRoutingTest$J \
$(LIB_DIR)/StableMarriage$J \
$(LIB_DIR)/StiglerMIP$J \
$(LIB_DIR)/Strimko2$J \
$(LIB_DIR)/Sudoku$J \
$(LIB_DIR)/SurvoPuzzle$J \
$(LIB_DIR)/ToNum$J \
$(LIB_DIR)/Tsp$J \
$(LIB_DIR)/WhoKilledAgatha$J \
$(LIB_DIR)/Xkcd$J \
$(LIB_DIR)/YoungTableaux$J

HAS_JAVA = true
ifndef JAVAC_BIN
HAS_JAVA =
endif
ifndef JAR_BIN
HAS_JAVA =
endif
ifndef JAVA_BIN
HAS_JAVA =
endif

# Main target
.PHONY: java # Build Java OR-Tools.
.PHONY: test_java # Test Java OR-Tools using various examples.
ifndef HAS_JAVA
java:
	@echo JAVA_HOME = $(JAVA_HOME)
	@echo JAVAC_BIN = $(JAVAC_BIN)
	@echo JAR_BIN = $(JAR_BIN)
	@echo JAVA_BIN = $(JAVA_BIN)
	$(warning Cannot find 'java' command which is needed for build. Please make sure it is installed and in system path. Check Makefile.local for more information.)
test_java: java
else
java: ortoolslibs $(JAVA_OR_TOOLS_LIBS) $(JAR)
test_java: test_java_examples
BUILT_LANGUAGES +=, Java
endif

$(GEN_DIR)/com/google/ortools/algorithms:
	$(MKDIR_P) $(GEN_PATH)$Scom$Sgoogle$Sortools$Salgorithms

$(GEN_DIR)/com/google/ortools/constraintsolver:
	$(MKDIR_P) $(GEN_PATH)$Scom$Sgoogle$Sortools$Sconstraintsolver

$(GEN_DIR)/com/google/ortools/graph:
	$(MKDIR_P) $(GEN_PATH)$Scom$Sgoogle$Sortools$Sgraph

$(GEN_DIR)/com/google/ortools/linearsolver:
	$(MKDIR_P) $(GEN_PATH)$Scom$Sgoogle$Sortools$Slinearsolver

$(GEN_DIR)/com/google/ortools/flatzinc:
	$(MKDIR_P) $(GEN_PATH)$Scom$Sgoogle$Sortools$Sflatzinc

$(GEN_DIR)/com/google/ortools/sat:
	$(MKDIR_P) $(GEN_PATH)$Scom$Sgoogle$Sortools$Ssat

$(CLASS_DIR):
	$(MKDIR_P) $(CLASS_DIR)

$(CLASS_DIR)/com: | $(CLASS_DIR)
	$(MKDIR) $(CLASS_DIR)$Scom

$(CLASS_DIR)/com/google: | $(CLASS_DIR)/com
	$(MKDIR) $(CLASS_DIR)$Scom$Sgoogle

$(CLASS_DIR)/com/google/ortools: | $(CLASS_DIR)/com/google
	$(MKDIR) $(CLASS_DIR)$Scom$Sgoogle$Sortools

$(GEN_DIR)/ortools/constraint_solver/constraint_solver_java_wrap.cc: \
 $(SRC_DIR)/ortools/constraint_solver/java/constraint_solver.i \
 $(SRC_DIR)/ortools/constraint_solver/java/routing.i \
 $(SRC_DIR)/ortools/base/base.i \
 $(SRC_DIR)/ortools/util/java/vector.i \
 $(SRC_DIR)/ortools/base/base.i \
 $(SRC_DIR)/ortools/util/java/proto.i \
 $(CP_DEPS) \
 $(SRC_DIR)/ortools/constraint_solver/routing.h \
 | $(GEN_DIR)/ortools/constraint_solver $(GEN_DIR)/com/google/ortools/constraintsolver
	$(SWIG_BINARY) -I$(INC_DIR) -c++ -java -o $(GEN_PATH)$Sortools$Sconstraint_solver$Sconstraint_solver_java_wrap.cc -package com.google.ortools.constraintsolver -module operations_research_constraint_solver -outdir $(GEN_PATH)$Scom$Sgoogle$Sortools$Sconstraintsolver $(SRC_DIR)$Sortools$Sconstraint_solver$Sjava$Srouting.i

$(OBJ_DIR)/swig/constraint_solver_java_wrap.$O: \
 $(GEN_DIR)/ortools/constraint_solver/constraint_solver_java_wrap.cc \
 $(CP_DEPS) \
 $(SRC_DIR)/ortools/constraint_solver/routing.h \
 | $(OBJ_DIR)/swig
	$(CCC) $(JNIFLAGS) $(JAVA_INC) -c $(GEN_PATH)$Sortools$Sconstraint_solver$Sconstraint_solver_java_wrap.cc $(OBJ_OUT)$(OBJ_DIR)$Sswig$Sconstraint_solver_java_wrap.$O

$(GEN_DIR)/ortools/algorithms/knapsack_solver_java_wrap.cc: \
 $(SRC_DIR)/ortools/algorithms/java/knapsack_solver.i \
 $(SRC_DIR)/ortools/base/base.i \
 $(SRC_DIR)/ortools/util/java/vector.i \
 $(SRC_DIR)/ortools/algorithms/knapsack_solver.h \
 | $(GEN_DIR)/ortools/algorithms $(GEN_DIR)/com/google/ortools/algorithms
	$(SWIG_BINARY) -I$(INC_DIR) -c++ -java -o $(GEN_PATH)$Sortools$Salgorithms$Sknapsack_solver_java_wrap.cc -package com.google.ortools.algorithms -module operations_research_algorithms -outdir $(GEN_PATH)$Scom$Sgoogle$Sortools$Salgorithms $(SRC_DIR)$Sortools$Salgorithms$Sjava$Sknapsack_solver.i

$(OBJ_DIR)/swig/knapsack_solver_java_wrap.$O: \
 $(GEN_DIR)/ortools/algorithms/knapsack_solver_java_wrap.cc \
 | $(OBJ_DIR)/swig
	$(CCC) $(JNIFLAGS) $(JAVA_INC) -c $(GEN_PATH)$Sortools$Salgorithms$Sknapsack_solver_java_wrap.cc $(OBJ_OUT)$(OBJ_DIR)$Sswig$Sknapsack_solver_java_wrap.$O

$(GEN_DIR)/ortools/graph/graph_java_wrap.cc: \
 $(SRC_DIR)/ortools/graph/java/graph.i \
 $(SRC_DIR)/ortools/base/base.i \
 $(GRAPH_DEPS) \
 | $(GEN_DIR)/ortools/graph $(GEN_DIR)/com/google/ortools/graph
	$(SWIG_BINARY) -I$(INC_DIR) -c++ -java -o $(GEN_PATH)$Sortools$Sgraph$Sgraph_java_wrap.cc -package com.google.ortools.graph -module operations_research_graph -outdir $(GEN_PATH)$Scom$Sgoogle$Sortools$Sgraph $(SRC_DIR)$Sortools$Sgraph$Sjava$Sgraph.i

$(GEN_DIR)/ortools/linear_solver/linear_solver_java_wrap.cc: \
 $(SRC_DIR)/ortools/linear_solver/java/linear_solver.i \
 $(SRC_DIR)/ortools/base/base.i \
 $(SRC_DIR)/ortools/util/java/vector.i \
 $(LP_DEPS) \
 | $(GEN_DIR)/ortools/linear_solver $(GEN_DIR)/com/google/ortools/linearsolver
	$(SWIG_BINARY) $(SWIG_INC) -I$(INC_DIR) -c++ -java -o $(GEN_PATH)$Sortools$Slinear_solver$Slinear_solver_java_wrap.cc -package com.google.ortools.linearsolver -module operations_research_linear_solver -outdir $(GEN_PATH)$Scom$Sgoogle$Sortools$Slinearsolver $(SRC_DIR)$Sortools$Slinear_solver$Sjava$Slinear_solver.i

$(OBJ_DIR)/swig/linear_solver_java_wrap.$O: \
 $(GEN_DIR)/ortools/linear_solver/linear_solver_java_wrap.cc \
 $(LP_DEPS) \
 | $(OBJ_DIR)/swig
	$(CCC) $(JNIFLAGS) $(JAVA_INC) -c $(GEN_PATH)$Sortools$Slinear_solver$Slinear_solver_java_wrap.cc $(OBJ_OUT)$(OBJ_DIR)$Sswig$Slinear_solver_java_wrap.$O

$(OBJ_DIR)/swig/graph_java_wrap.$O: \
 $(GEN_DIR)/ortools/graph/graph_java_wrap.cc \
 $(GRAPH_DEPS) \
 | $(OBJ_DIR)/swig
	$(CCC) $(JNIFLAGS) $(JAVA_INC) -c $(GEN_PATH)$Sortools$Sgraph$Sgraph_java_wrap.cc $(OBJ_OUT)$(OBJ_DIR)$Sswig$Sgraph_java_wrap.$O

$(GEN_DIR)/com/google/ortools/constraintsolver/SearchLimitProtobuf.java: \
 $(SRC_DIR)/ortools/constraint_solver/search_limit.proto \
 | $(GEN_DIR)/com/google/ortools/constraintsolver
	$(PROTOC) --proto_path=$(SRC_DIR) --java_out=$(GEN_PATH) $(SRC_DIR)$Sortools$Sconstraint_solver$Ssearch_limit.proto

$(GEN_DIR)/com/google/ortools/constraintsolver/SolverParameters.java: \
 $(SRC_DIR)/ortools/constraint_solver/solver_parameters.proto \
 | $(GEN_DIR)/com/google/ortools/constraintsolver
	$(PROTOC) --proto_path=$(SRC_DIR) --java_out=$(GEN_PATH) $(SRC_DIR)$Sortools$Sconstraint_solver$Ssolver_parameters.proto

$(GEN_DIR)/com/google/ortools/constraintsolver/RoutingParameters.java: \
 $(SRC_DIR)/ortools/constraint_solver/routing_parameters.proto \
 | $(GEN_DIR)/com/google/ortools/constraintsolver
	$(PROTOC) --proto_path=$(SRC_DIR) --java_out=$(GEN_PATH) $(SRC_DIR)$Sortools$Sconstraint_solver$Srouting_parameters.proto

$(GEN_DIR)/com/google/ortools/constraintsolver/RoutingEnums.java: \
 $(SRC_DIR)/ortools/constraint_solver/routing_enums.proto \
 | $(GEN_DIR)/com/google/ortools/constraintsolver
	$(PROTOC) --proto_path=$(SRC_DIR) --java_out=$(GEN_PATH) $(SRC_DIR)$Sortools$Sconstraint_solver$Srouting_enums.proto

$(LIB_DIR)/protobuf.jar: dependencies/install/lib/protobuf.jar | $(LIB_DIR)
	$(COPY) dependencies$Sinstall$Slib$Sprotobuf.jar $(LIB_DIR)

$(LIB_DIR)/com.google.ortools.jar: \
 $(LIB_DIR)/protobuf.jar \
 $(GEN_DIR)/ortools/constraint_solver/constraint_solver_java_wrap.cc \
 $(GEN_DIR)/ortools/algorithms/knapsack_solver_java_wrap.cc \
 $(GEN_DIR)/ortools/graph/graph_java_wrap.cc \
 $(GEN_DIR)/ortools/linear_solver/linear_solver_java_wrap.cc \
 $(GEN_DIR)/com/google/ortools/constraintsolver/SolverParameters.java \
 $(GEN_DIR)/com/google/ortools/constraintsolver/SearchLimitProtobuf.java \
 $(GEN_DIR)/com/google/ortools/constraintsolver/RoutingParameters.java \
 $(GEN_DIR)/com/google/ortools/constraintsolver/RoutingEnums.java | \
 $(CLASS_DIR)/com/google/ortools
	$(JAVAC_BIN) -d $(CLASS_DIR) \
 -cp $(LIB_DIR)$Sprotobuf.jar \
 $(SRC_DIR)$Sortools$Scom$Sgoogle$Sortools$Sconstraintsolver$S*.java \
 $(GEN_PATH)$Scom$Sgoogle$Sortools$Sconstraintsolver$S*.java \
 $(GEN_PATH)$Scom$Sgoogle$Sortools$Salgorithms$S*.java \
 $(GEN_PATH)$Scom$Sgoogle$Sortools$Sgraph$S*.java \
 $(GEN_PATH)$Scom$Sgoogle$Sortools$Slinearsolver$S*.java
	$(JAR_BIN) cvf $(LIB_DIR)$Scom.google.ortools.jar -C $(CLASS_DIR) com$Sgoogle$Sortools$S

$(LIB_DIR)/$(LIB_PREFIX)jniortools.$(JNI_LIB_EXT): \
 $(OBJ_DIR)/swig/constraint_solver_java_wrap.$O \
 $(OBJ_DIR)/swig/knapsack_solver_java_wrap.$O \
 $(OBJ_DIR)/swig/graph_java_wrap.$O \
 $(OBJ_DIR)/swig/linear_solver_java_wrap.$O \
 $(OR_TOOLS_LIBS)
	$(DYNAMIC_LD) $(LD_OUT)$(LIB_DIR)$S$(LIB_PREFIX)jniortools.$(JNI_LIB_EXT) \
 $(OBJ_DIR)$Sswig$Sconstraint_solver_java_wrap.$O \
 $(OBJ_DIR)$Sswig$Sknapsack_solver_java_wrap.$O \
 $(OBJ_DIR)$Sswig$Sgraph_java_wrap.$O \
 $(OBJ_DIR)$Sswig$Slinear_solver_java_wrap.$O \
 $(OR_TOOLS_LNK) \
 $(OR_TOOLS_LDFLAGS)

#####################
##  Java Examples  ##
#####################
ifeq ($(EX),) # Those rules will be used if EX variable is not set
.PHONY: rjava cjava
rjava cjava:
	@echo No java file was provided, the $@ target must be used like so: \
 make $@ EX=examples/java/example.java
else # This generic rule will be used if EX variable is set
EX_NAME = $(basename $(notdir $(EX)))

.PHONY: cjava
cjava: $(CLASS_DIR)/$(EX_NAME)

.PHONY: rjava
rjava: $(LIB_DIR)/$(EX_NAME)$J
	@echo running $<
	$(MAKE) run_$(EX_NAME)
endif # ifeq ($(EX),)

$(CLASS_DIR)/%: $(JAVA_EX_DIR)/%.java $(JAVA_OR_TOOLS_LIBS) | $(CLASS_DIR)
	-$(DELREC) $(CLASS_DIR)$S$*
	-$(MKDIR_P) $(CLASS_DIR)$S$*
	$(JAVAC_BIN) -d $(CLASS_DIR)$S$* \
 -cp $(LIB_DIR)$Scom.google.ortools.jar$(CPSEP)$(LIB_DIR)$Sprotobuf.jar \
 $(JAVA_EX_PATH)$S$*.java

$(LIB_DIR)/%$J: $(CLASS_DIR)/% | $(LIB_DIR)
	-$(DEL) $(LIB_DIR)$S$*.jar
	$(JAR_BIN) cvf $(LIB_DIR)$S$*.jar -C $(CLASS_DIR)$S$* .

run_%: $(LIB_DIR)/%$J
	$(JAVA_BIN) -Xss2048k $(JAVAFLAGS) \
 -cp $(LIB_DIR)$S$*.jar$(CPSEP)$(LIB_DIR)$Scom.google.ortools.jar$(CPSEP)$(LIB_DIR)$Sprotobuf.jar \
 $* $(ARGS)

################
##  Cleaning  ##
################
.PHONY: clean_java # Clean Java output from previous build.
clean_java:
	-$(DELREC) $(GEN_PATH)$Scom
	-$(DELREC) $(OBJ_DIR)$Scom
	-$(DEL) $(CLASS_DIR)$S*.class
	-$(DELREC) $(CLASS_DIR)
	-$(DEL) $(GEN_PATH)$Sortools$Salgorithms$S*java_wrap*
	-$(DEL) $(GEN_PATH)$Sortools$Sconstraint_solver$S*java_wrap*
	-$(DEL) $(GEN_PATH)$Sortools$Sgraph$S*java_wrap*
	-$(DEL) $(GEN_PATH)$Sortools$Slinear_solver$S*java_wrap*
	-$(DEL) $(OBJ_DIR)$Sswig$S*_java_wrap.$O
	-$(DEL) $(LIB_DIR)$S$(LIB_PREFIX)jni*.$(JNI_LIB_EXT)
	-$(DEL) $(LIB_DIR)$S*.jar

#############
##  DEBUG  ##
#############
.PHONY: detect_java # Show variables used to build Java OR-Tools.
detect_java:
	@echo Relevant info for the Java build:
	@echo JAVA_INC = $(JAVA_INC)
	@echo JNIFLAGS = $(JNIFLAGS)
	@echo JAVA_HOME = $(JAVA_HOME)
	@echo JAVAC_BIN = $(JAVAC_BIN)
	@echo CLASS_DIR = $(CLASS_DIR)
	@echo JAR_BIN = $(JAR_BIN)
	@echo JAVA_BIN = $(JAVA_BIN)
	@echo JAVAFLAGS = $(JAVAFLAGS)
	@echo JAVA_OR_TOOLS_LIBS = $(JAVA_OR_TOOLS_LIBS)
ifeq ($(SYSTEM),win)
	@echo off & echo(
else
	@echo
endif