#load environment from local.env.mk
LOCAL_ENV_MK=local.env.mk
ifneq "$(wildcard $(LOCAL_ENV_MK))" ""
include $(LOCAL_ENV_MK)
else
$(shell cp sample.$(LOCAL_ENV_MK) $(LOCAL_ENV_MK))
$(info local environement not setup! try:)
$(info gedit $(LOCAL_ENV_MK))
$(info Please setup the $(LOCAL_ENV_MK) - the default was just created')
include $(LOCAL_ENV_MK)
endif


# The path to the NDK, requires crystax version r-4 for now, due to support
#for the standard library
ifndef ANDROID_NDK_ROOT
$(error ANDROID_NDK_ROOT not defined, please export this variable or define it before executing make)
endif

ANDROID_NDK_BASE = $(ANDROID_NDK_ROOT)


#define OPENCV_ROOT when calling this makefile
#OPENCV_ROOT = $(ANDROID_NDK_BASE)/apps/opencv
ifndef OPENCV_ROOT
$(error Please define OPENCV_ROOT with something like the command \
make OPENCV_ROOT=<opencv>)
endif

ifndef PROJECT_PATH
$(info PROJECT_PATH defaulting to this directory)
PROJECT_PATH=.
endif


$(info OPENCV_ROOT = $(OPENCV_ROOT))

# The name of the native library
LIBNAME = libcvcamera.so

# Find all the C++ sources in the native folder
SOURCES = $(wildcard jni/*.cpp)
HEADERS = $(wildcard jni/*.h)

ANDROID_MKS = $(wildcard jni/*.mk)

SWIG_IS = $(wildcard jni/*.i)

SWIG_MAIN = jni/cvcamera.i

SWIG_JAVA_DIR = src/com/theveganrobot/cvcamera/jni
SWIG_JAVA_OUT = $(wildcard $(SWIG_JAVA_DIR)/*.java)


SWIG_C_DIR = jni/gen
SWIG_C_OUT = $(SWIG_C_DIR)/cvcamera_swig.cpp

# The real native library stripped of symbols
LIB		= libs/armeabi-v7a/$(LIBNAME) libs/armeabi/$(LIBNAME)


all:	$(LIB)


#calls the ndk-build script, passing it OPENCV_ROOT and OPENCV_LIBS_DIR
$(LIB): $(SWIG_C_OUT) $(SOURCES) $(HEADERS) $(ANDROID_MKS)
	$(ANDROID_NDK_BASE)/ndk-build OPENCV_ROOT=$(OPENCV_ROOT) \
	OPENCV_LIBS_DIR=$(OPENCV_LIBS_DIR) PROJECT_PATH=$(PROJECT_PATH) V=$(V) $(NDK_FLAGS)


#this creates the swig wrappers
$(SWIG_C_OUT): $(SWIG_IS)
	make clean-swig &&\
	mkdir -p $(SWIG_C_DIR) &&\
	mkdir -p $(SWIG_JAVA_DIR) &&\
	swig -java -c++ -I$(OPENCV_ROOT)/android/jni -package  "com.theveganrobot.cvcamera.jni" \
	-outdir $(SWIG_JAVA_DIR) \
	-o $(SWIG_C_OUT) $(SWIG_MAIN)
	
	
#clean targets
.PHONY: clean  clean-swig cleanall

#this deletes the generated swig java and the generated c wrapper
clean-swig:
	rm -f $(SWIG_JAVA_OUT) $(SWIG_C_OUT)
	
#does clean-swig and then uses the ndk-build clean
clean: clean-swig
	$(ANDROID_NDK_BASE)/ndk-build clean V=$(V) $(NDK_FLAGS)
