Introduce generic JNI build

diff --git a/jni.mk b/jni.mk
new file mode 100644 (file)
index 0000000..915098b
--- /dev/null
+++ b/jni.mk
@@ -0,0 +1,53 @@
+ARGEO_BUILD_BASE := $(dir $(lastword $(MAKEFILE_LIST)))
+include $(ARGEO_BUILD_BASE)osgi.mk
+
+A2_NATIVE_CATEGORY=$(A2_OUTPUT)/lib/linux/$(shell uname -m)/$(A2_CATEGORY)
+TARGET_EXEC := libJava_$(NATIVE_PACKAGE).so
+
+LDFLAGS = -shared -fPIC -Wl,-soname,$(TARGET_EXEC).$(MAJOR).$(MINOR) $(ADDITIONAL_LIBS)
+CFLAGS = -O3 -fPIC
+
+SRC_DIRS := . 
+
+#
+# Generic Argeo
+#
+BUILD_DIR := $(SDK_BUILD_BASE)/jni/$(NATIVE_PACKAGE)
+
+# Include directories
+INC_DIRS := $(shell find $(SRC_DIRS) -type d) $(JAVA_HOME)/include $(JAVA_HOME)/include/linux $(ADDITIONAL_INCLUDES)
+
+.PHONY: clean all ide
+all: $(A2_NATIVE_CATEGORY)/$(TARGET_EXEC)
+
+clean:
+       $(RM) $(A2_NATIVE_CATEGORY)/$(TARGET_EXEC)
+
+# Sources
+SRCS := $(shell find $(SRC_DIRS) -name '*.cpp' -or -name '*.c' -or -name '*.s')
+# Objects (example.cpp to ./org_example_core/example.cpp.o)
+OBJS := $(SRCS:%=$(BUILD_DIR)/%.o)
+# Dependencies (example.cpp.o to ./org_example_core/example.cpp.d)
+DEPS := $(OBJS:.o=.d)
+# Add -I prefix to include directories
+INC_FLAGS := $(addprefix -I,$(INC_DIRS))
+# Generate dependencies makefiles
+CPPFLAGS := $(INC_FLAGS) -MMD -MP
+
+# Final build step
+$(A2_NATIVE_CATEGORY)/$(TARGET_EXEC): $(OBJS)
+       mkdir -p $(A2_NATIVE_CATEGORY)
+       $(CC) $(OBJS) -o $@ $(LDFLAGS)
+
+# Build step for C source
+$(BUILD_DIR)/%.c.o: %.c
+       mkdir -p $(dir $@)
+       $(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
+
+# Build step for C++ source
+$(BUILD_DIR)/%.cpp.o: %.cpp
+       mkdir -p $(dir $@)
+       $(CXX) $(CPPFLAGS) $(CXXFLAGS) -c $< -o $@
+
+# Include the .d makefiles. (- pefix suppress errors if not found)
+-include $(DEPS)