Move JNI to a standalone subdirectory.

[lgpl/argeo-commons.git] / jni / jni.mk

diff --git a/jni/jni.mk b/jni/jni.mk
new file mode 100644 (file)
index 0000000..46f0674
--- /dev/null
+++ b/jni/jni.mk
@@ -0,0 +1,61 @@
+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)
+
+# Every folder in ./src will need to be passed to GCC so that it can find header files
+INC_DIRS := $(shell find $(SRC_DIRS) -type d) $(JAVA_HOME)/include $(JAVA_HOME)/include/linux $(ADDITIONAL_INCLUDES)
+
+
+.PHONY: clean all ide
+all: $(SDK_BUILD_BASE)/jni/$(TARGET_EXEC)
+
+# Find all the C and C++ files we want to compile
+# Note the single quotes around the * expressions. Make will incorrectly expand these otherwise.
+SRCS := $(shell find $(SRC_DIRS) -name '*.cpp' -or -name '*.c' -or -name '*.s')
+
+# String substitution for every C/C++ file.
+# As an example, hello.cpp turns into ./build/hello.cpp.o
+OBJS := $(SRCS:%=$(BUILD_DIR)/%.o)
+
+# String substitution (suffix version without %).
+# As an example, ./build/hello.cpp.o turns into ./build/hello.cpp.d
+DEPS := $(OBJS:.o=.d)
+
+# Add a prefix to INC_DIRS. So moduleA would become -ImoduleA. GCC understands this -I flag
+INC_FLAGS := $(addprefix -I,$(INC_DIRS))
+
+# The -MMD and -MP flags together generate Makefiles for us!
+# These files will have .d instead of .o as the output.
+CPPFLAGS := $(INC_FLAGS) -MMD -MP
+
+# The final build step.
+$(SDK_BUILD_BASE)/jni/$(TARGET_EXEC): $(OBJS)
+       $(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 $@
+
+clean:
+       rm -r $(BUILD_DIR) $(SDK_BUILD_BASE)/$(TARGET_EXEC)
+
+# Include the .d makefiles. The - at the front suppresses the errors of missing
+# Makefiles. Initially, all the .d files will be missing, and we don't want those
+# errors to show up.
+-include $(DEPS)
+
+# MAKEFILE_DIR := $(dir $(firstword $(MAKEFILE_LIST)))