--- /dev/null
+include ../../../../sdk.mk
+
+NATIVE_PACKAGE := com_sun_mail_mbox
+
+TARGET_EXEC := libJava_$(NATIVE_PACKAGE).so
+
+# sudo apt install liblockfile-dev
+
+build:
+ mkdir -p $(SDK_BUILD_BASE)/jni
+ $(CC) -o $(SDK_BUILD_BASE)/jni/$(TARGET_EXEC) -shared -fPIC -fpic -Wl,-soname,$(TARGET_EXEC).1.6 -I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/linux *.c