#*******************************************************************************
# Path information
#*******************************************************************************
LOCAL_DIR     := $(realpath $(shell pwd))
DEMO_TOP      := $(LOCAL_DIR)
SOURCE_DIR    := $(DEMO_TOP)/src
DYNAMIC_DIR   := $(DEMO_TOP)/lib
INCLUDE_DIR   := $(DEMO_TOP)/include

OUTPUT_DIR    := $(LOCAL_DIR)/output
INSTALL_DIR   ?= $(LOCAL_DIR)/__install

#*******************************************************************************
# Variables
#*******************************************************************************
# target
TARGET          ?= demo_hello

PRODUCT         ?= LBC2
PLATFORM_RK3568 := LBC2

#*******************************************************************************
# Functions
#*******************************************************************************

#*******************************************************************************
# Objects
#*******************************************************************************
sources              = $(subst $(LOCAL_DIR)/,,$(shell find $(SOURCE_DIR) -name "*.c"))
#$(info sources=$(sources))

filter_out_files    :=
filter_out_dirs     :=

sources_out         := $(foreach dir,$(filter_out_dirs),$(shell find $(dir) -name "*.c"))
#$(info sources_out=$(sources_out))
sources             := $(filter-out $(sources_out),$(sources))
sources             := $(foreach file,$(sources),$(if $(filter $(subst $(LOCAL_DIR)/,,$(strip $(patsubst %/,%,$(sort $(dir $(file)))))),$(filter_out_dirs)),,$(file)))
objects              = $(addprefix $(OUTPUT_DIR)/,$(patsubst %.c,%.o,$(sources)))
$(info objects=$(objects))

#*******************************************************************************
# Compile configure
#*******************************************************************************
ARCH          := arm
ifneq ($(filter $(PRODUCT),$(PLATFORM_RK3568)),)
ARCH          := arm64
#CROSS_COMPILE := $(HOME)/Workspaces/Toolchains/aarch64/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-
CROSS_COMPILE := $(HOME)/Workspaces/Toolchains/aarch64/aarch64-linux-android-4.9/
endif

CC            := $(CROSS_COMPILE)gcc
LD            := $(CROSS_COMPILE)ld
AR            := $(CROSS_COMPILE)ar
STRIP         := $(CROSS_COMPILE)strip

export ARCH CROSS_COMPILE

INC_DIRS := $(INCLUDE_DIR)
LIB_DIRS := $(DYNAMIC_DIR)

LIBS     := $(LIBS_$(PLATFORM))
CFLAGS   := 
CFLAGS   += $(if $(INC_DIRS),$(addprefix -I,$(sort $(INC_DIRS)))) -g -Wall -O2
LDFLAGS  += $(if $(LIB_DIRS),$(addprefix -L,$(sort $(LIB_DIRS)))) $(if $(LIBS),$(addprefix -l,$(sort $(LIBS))))
ARFLAGS  +=

#*******************************************************************************
# Targets
#*******************************************************************************
.PHONY: init $(TARGET) install clean help
all: init $(TARGET)

init:
	@mkdir -p $(OUTPUT_DIR)

$(TARGET): $(objects)
	@echo ">>>>>>>>>>>>>>>>>>> $@ >>>>>>>>>>>>>>>>>>>"
	$(CC) -o $(OUTPUT_DIR)/$@ $^ $(CFLAGS) $(LDFLAGS)

$(OUTPUT_DIR)/%.o: %.c
	@mkdir -p $(@D)
	@$(CC) -o $@ -c $< $(CFLAGS)

install:
	@echo ">>>>>>>>>>>>>>>>>>> $@ >>>>>>>>>>>>>>>>>>>"
	@if [ -d ${INSTALL_DIR}              ]; then cp -arf $(OUTPUT_DIR)/t1_test ${INSTALL_DIR}/; fi

clean:
	@echo ">>>>>>>>>>>>>>>>>>> $@ >>>>>>>>>>>>>>>>>>>"
	@rm -rf $(OUTPUT_DIR)
	@if [ -d $(LOCAL_DIR)/__install ]; then \
		rm -rf $(LOCAL_DIR)/__install; \
	fi

help:
	@echo "usage: make PRODUCT={PRODUCT}"