#Builds mbedTLS to an archive.  This makefile is called from the main makefile
#which is just called "makefile".

MBED_OUTPUT_DIR := ./output/mbedTLS
ARCHIVE_IMAGE := mbedTLS.a
CC = arm-none-eabi-gcc
AR = arm-none-eabi-ar

SUB_MAKEFILE_DIR = ./library-makefiles

CFLAGS += $(INCLUDE_DIRS) -nostartfiles -ffreestanding -mthumb -mcpu=cortex-m3 \
		  -Wall -Wextra -g3 -O0 -ffunction-sections -fdata-sections \
		  -DMBEDTLS_CONFIG_FILE='<mbedtls_config.h>' -MMD -MP -MF"$(@:%.o=%.d)" -MT $@

#must be first in the include paths to ensure the correct FreeRTOSConfig.h is
#used.
INCLUDE_DIRS += -I./target-specific-source
INCLUDE_DIRS += -I./target-specific-source/CMSIS
INCLUDE_DIRS += -I./../../source/configuration-files
INCLUDE_DIRS += -I./../../lib/ThirdParty/mbedtls/include
INCLUDE_DIRS += -I./../../lib/FreeRTOS/utilities/mbedtls_freertos
INCLUDE_DIRS += -I./../../lib/FreeRTOS/freertos-plus-tcp/include
INCLUDE_DIRS += -I./../../lib/FreeRTOS/freertos-plus-tcp/tools/tcp_utilities/include

KERNEL_DIR += ./../../lib/FreeRTOS/freertos-kernel
KERNEL_PORT_DIR += $(KERNEL_DIR)/portable/GCC/ARM_CM3
INCLUDE_DIRS += -I$(KERNEL_DIR)/include \
				-I$(KERNEL_PORT_DIR)

#Implementation of the Mbed TLS port layer for FreeRTOS.
include $(SUB_MAKEFILE_DIR)/mbedtls-utils.mk

#mbedTLS itself.
include $(SUB_MAKEFILE_DIR)/mbedtls.mk

#Create a list of object files with the desired output directory path.
OBJS = $(SOURCE_FILES:%.c=%.o)
OBJS_NO_PATH = $(notdir $(OBJS))
OBJS_OUTPUT = $(OBJS_NO_PATH:%.o=$(MBED_OUTPUT_DIR)/%.o)

#Create a list of dependency files with the desired output directory path.
DEP_FILES := $(SOURCE_FILES:%.c=$(MBED_OUTPUT_DIR)/%.d)
DEP_FILES_NO_PATH = $(notdir $(DEP_FILES))
DEP_OUTPUT = $(DEP_FILES_NO_PATH:%.d=$(MBED_OUTPUT_DIR)/%.d)

all: $(MBED_OUTPUT_DIR)/$(ARCHIVE_IMAGE)

%.o : %.c
$(MBED_OUTPUT_DIR)/%.o : %.c $(MBED_OUTPUT_DIR)/%.d mbedTLS-archive.mk
	$(CC) $(CFLAGS) -c $< -o $@

$(MBED_OUTPUT_DIR)/$(ARCHIVE_IMAGE): $(OBJS_OUTPUT) mbedTLS-archive.mk
	$(AR) -r $(MBED_OUTPUT_DIR)/$(ARCHIVE_IMAGE) $(OBJS_OUTPUT)

$(DEP_OUTPUT):
include $(wildcard $(DEP_OUTPUT))

clean:
	rm -f $(MBED_OUTPUT_DIR)/$(ARCHIVE_IMAGE) $(MBED_OUTPUT_DIR)/*.o $(MBED_OUTPUT_DIR)/*.d

#use "make print-[VARIABLE_NAME] to print the value of a variable generated by
#this makefile.
print-%  : ; @echo $* = $($*)

.PHONY: all clean