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Makefile
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SHELL=/bin/bash
CXX=./zig/zig c++
NAME:=libsocket-can-java
# JAVA_HOME:=/snap/openjdk/1610/jdk
JAVA_HOME:=/usr/lib/jvm/java-17-openjdk-amd64/
JAVA_INCLUDES=-I$(JAVA_HOME)/include/linux -I$(JAVA_HOME)/include
JAVA=$(JAVA_HOME)/bin/java
JAVAC=$(JAVA_HOME)/bin/javac
JAVAH=$(JAVA_HOME)/bin/javac -h
JAR=$(JAVA_HOME)/bin/jar
JAVA_SRC:=$(shell find src -type f -and -name '*.java')
JAVA_TEST_SRC:=$(shell find src.test -type f -and -name '*.java')
JNI_SRC:=$(shell find jni -type f -and -regex '^.*\.\(c\|cpp\|h\)')
JAVA_DEST=classes
JAVA_TEST_DEST=classes.test
LIB_DEST=lib
JAR_DEST=dist
JAR_DEST_FILE=$(JAR_DEST)/$(NAME).jar
JAR_MANIFEST_FILE=META-INF/MANIFEST.MF
DIRS=stamps obj $(JAVA_DEST) $(JAVA_TEST_DEST) $(LIB_DEST)/x86_64 $(LIB_DEST)/armv7a $(JAR_DEST)
JNI_DIR=jni
JNI_CLASSES=io.openems.edge.socketcan.driver.CanSocket
JAVAC_FLAGS=-g -Xlint:all
# Note: add -fstack-protector once zig 0.12 is available
CXXFLAGS=-Iclasses -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions \
--param=ssp-buffer-size=4 -fPIC -Wno-unused-parameter \
-pedantic -D_REENTRANT -D_GNU_SOURCE \
$(JAVA_INCLUDES)
SONAME=jni_socketcan
LDFLAGS=-Wl,-soname,$(SONAME)
.DEFAULT_GOAL := all
.LIBPATTERNS :=
.SUFFIXES:
.PHONY: all
all: stamps/create-jar stamps/compile-test
.PHONY: clean
clean:
$(RM) -r $(DIRS) $(STAMPS) $(filter %.h,$(JNI_SRC))
$(RM) -r $(JNI_DIR)/*.h
$(RM) -r $(JNI_DIR)/*.gch
find . -name "*.class" -exec rm {} \;
stamps/dirs:
mkdir $(DIRS)
@touch $@
stamps/compile-src: stamps/dirs $(JAVA_SRC)
$(call msg,JAVAC JAVA,$@)
$(Q)$(JAVAC) $(JAVAC_FLAGS) -d $(JAVA_DEST) $(sort $(JAVA_SRC))
@touch $@
stamps/compile-test: stamps/compile-src $(JAVA_TEST_SRC)
$(Q)$(JAVAC) $(JAVAC_FLAGS) -cp $(JAVA_DEST) -d $(JAVA_TEST_DEST) $(sort $(JAVA_TEST_SRC))
@touch $@
stamps/generate-jni-h: stamps/compile-src
$(call msg,GEN HEADER,$@)
$(Q)$(JAVAH) classes $(sort $(JAVA_SRC))
@touch $@
stamps/compile-native-x86_64: stamps/generate-jni-h $(JNI_SRC)
$(call msg,CXX JNI Linux x86/64,$@)
$(Q)$(CXX) -target x86_64-linux-gnu $(CXXFLAGS) $(LDFLAGS) -shared -o $(LIB_DEST)/x86_64/lib$(SONAME).so \
$(sort $(filter %.cpp,$(JNI_SRC)) $(filter %.c,$(JNI_SRC)))
execstack -c $(LIB_DEST)/x86_64/lib$(SONAME).so
@touch $@
stamps/compile-native-armv7a: stamps/generate-jni-h $(JNI_SRC)
$(call msg,CXX JNI Linux ARM,$@)
$(Q)$(CXX) -target arm-linux-gnueabihf $(CXXFLAGS) $(LDFLAGS) -shared -o $(LIB_DEST)/armv7a/lib$(SONAME).so \
$(sort $(filter %.cpp,$(JNI_SRC)) $(filter %.c,$(JNI_SRC)))
execstack -c $(LIB_DEST)/armv7a/lib$(SONAME).so
@touch $@
stamps/create-jar: stamps/compile-native-x86_64 stamps/compile-native-armv7a $(JAR_MANIFEST_FILE)
$(call msg,$(java -version),$@)
$(call msg,JAVAC JAR,$@)
$(Q)$(JAR) cMf $(JAR_DEST_FILE) $(JAR_MANIFEST_FILE) lib -C $(JAVA_DEST) .
@touch $@
.PHONY: test
test: stamps/create-jar stamps/compile-test
$(JAVA) -ea -cp $(JAR_DEST_FILE):$(JAVA_TEST_DEST) \
-Xcheck:jni \
io.openems.edge.socketcan.driver.CanSocketTest