# Helper macros to convert spaces into question marks and back again
e :=
sp := $(e) $(e)
qs = $(subst ?,$(sp),$1)
sq = $(subst $(sp),?,$1)

# Get name of this Makefile (avoid getting word 0 and a starting space)
makefile_name := $(wordlist 1,1000,$(MAKEFILE_LIST))

# Get path of this Makefile
makefile_path := $(call qs,$(dir $(call sq,$(abspath $(call sq,$(makefile_name))))))

# Get path where the Application is
application_path := $(call qs,$(abspath $(call sq,$(makefile_path)..)))

# Change makefile_name to a relative path
makefile_name := $(subst $(call sq,$(application_path))/,,$(call sq,$(abspath $(call sq,$(makefile_name)))))

# Get relative path to makefile from application_path
makefile_path_relative := $(subst $(call sq,$(application_path))/,,$(call sq,$(abspath $(call sq,$(makefile_path)))))

# Get path to Middlewares
touchgfx_middlewares_path := gcc/Middlewares
cubemx_middlewares_path := Middlewares

# Get path to Drivers
Drivers_path := Drivers

# Get OS path
touchgfx_os_path := $(touchgfx_middlewares_path)/Third_Party/FreeRTOS
cubemx_os_path := $(cubemx_middlewares_path)/Third_Party/FreeRTOS

# LibJPEG path
libjpeg_path := $(cubemx_middlewares_path)/Third_Party/LibJPEG

# Get identification of this system
ifeq ($(OS),Windows_NT)
UNAME := MINGW32_NT-6.2
else
UNAME := $(shell uname -s)
endif

board_name := STM32F746-DISCO
platform := cortex_m7
cpp_compiler_options_local := -DUSE_HAL_DRIVER -DSTM32F746xx
c_compiler_options_local := -DUSE_HAL_DRIVER -DSTM32F746xx

.PHONY: all clean assets flash intflash

all: $(filter clean,$(MAKECMDGOALS))
all clean assets:
	@cd "$(application_path)" && $(MAKE) -r -f $(makefile_name) -s $(MFLAGS) _$@_

flash intflash: all
	@cd "$(application_path)" && $(MAKE) -r -f $(makefile_name) -s $(MFLAGS) _$@_

# Directories containing application-specific source and header files.
# Additional components can be added to this list. make will look for
# source files recursively in comp_name/src and setup an include directive
# for comp_name/include.
components := TouchGFX/gui target TouchGFX/generated/gui_generated
touchgfx_generator_components := TouchGFX/target TouchGFX/App
cubemx_components := Core Drivers/STM32F7xx_HAL_Driver

# Location of folder containing bmp/png files.
asset_images_input  := TouchGFX/assets/images

# Location of folder to search for ttf font files
asset_fonts_input  := TouchGFX/assets/fonts

# Location of folder where the texts.xml is placed
asset_texts_input  := TouchGFX/assets/texts

asset_videos_input := TouchGFX/assets/videos

build_root_path := TouchGFX/build
object_output_path := $(build_root_path)/$(board_name)
binary_output_path := $(build_root_path)/bin

# Location of output folders where autogenerated code from assets is placed
asset_root_path := TouchGFX/generated
asset_images_output := $(asset_root_path)/images
asset_fonts_output := $(asset_root_path)/fonts
asset_texts_output := $(asset_root_path)/texts
asset_videos_output := $(asset_root_path)/videos

#include application specific configuration
include $(application_path)/TouchGFX/config/gcc/app.mk

# corrects TouchGFX Path
touchgfx_path := ${subst ../,,$(touchgfx_path)}

os_source_files := \
    $(cubemx_os_path)/Source/croutine.c \
    $(cubemx_os_path)/Source/list.c \
    $(cubemx_os_path)/Source/queue.c \
    $(cubemx_os_path)/Source/tasks.c \
    $(cubemx_os_path)/Source/timers.c \
    $(cubemx_os_path)/Source/CMSIS_RTOS_V2/cmsis_os2.c

os_include_paths := \
    $(cubemx_os_path)/Source/include \
    $(cubemx_os_path)/Source/CMSIS_RTOS_V2
   
os_source_files += \
   $(touchgfx_os_path)/Source/portable/MemMang/heap_4.c \
   $(touchgfx_os_path)/Source/portable/GCC/ARM_CM7/r0p1/port.c 
   
os_include_paths += \
   $(touchgfx_os_path)/Source/portable/GCC/ARM_CM7/r0p1 

ifeq ($(UNAME), Linux)
imageconvert_executable := $(touchgfx_path)/framework/tools/imageconvert/build/linux/imageconvert.out
fontconvert_executable := $(touchgfx_path)/framework/tools/fontconvert/build/linux/fontconvert.out
else
imageconvert_executable := $(touchgfx_path)/framework/tools/imageconvert/build/win/imageconvert.out
fontconvert_executable := $(touchgfx_path)/framework/tools/fontconvert/build/win/fontconvert.out

stldr := W25Q128JVEIQ_STM32F746G-DISCO.stldr
include $(application_path)/gcc/include/cube_programmer.mk

endif

target_executable := target.elf
target_hex := target.hex

assembler         := arm-none-eabi-gcc

assembler_options += \
    -g  \
    -fno-exceptions\
    $(no_libs) -mthumb -mno-thumb-interwork  \
    -Wall
    
assembler_options += $(float_options)

c_compiler         := arm-none-eabi-gcc
c_compiler_options += \
    -g \
    -mthumb -fno-exceptions \
    -mno-thumb-interwork -std=c99 \
    $(no_libs) \
    -Os -fno-strict-aliasing -fdata-sections -ffunction-sections

c_compiler_options += $(float_options)

cpp_compiler         := arm-none-eabi-g++
cpp_compiler_options += \
    -g -mthumb \
    $(no_libs) \
    -mno-thumb-interwork -fno-rtti -fno-exceptions  \
    -Os -fno-strict-aliasing -fdata-sections -ffunction-sections

cpp_compiler_options += $(float_options)

linker         := arm-none-eabi-g++
linker_options += \
    -g -Wl,-static -mthumb $(no_libs) -mno-thumb-interwork \
    -fno-exceptions -specs=nosys.specs -fno-rtti \
    -Os -fno-strict-aliasing -Wl,--gc-sections -Wl,--print-memory-usage

objcopy := arm-none-eabi-objcopy

archiver := arm-none-eabi-ar

strip := arm-none-eabi-strip

# Additional toolchain configuration for Cortex-M7 targets.

float_options := -mfpu=fpv5-sp-d16 -mfloat-abi=softfp

assembler_options += -mthumb -mcpu=cortex-m7 -Wno-psabi $(float_options) -DCORE_M7 -D__irq=""
c_compiler_options += -mthumb -mcpu=cortex-m7 -Wno-psabi $(float_options) -DCORE_M7 -D__irq=""
cpp_compiler_options += -mthumb -mcpu=cortex-m7 -Wno-psabi $(float_options) -DCORE_M7 -D__irq=""
linker_options += -mcpu=cortex-m7 -Wno-psabi $(float_options)

#include everything + specific vendor folders
framework_includes := $(touchgfx_path)/framework/include

#this needs to change when assset include folder changes.
all_components := $(components) \
	$(asset_fonts_output) \
	$(asset_images_output) \
	$(asset_texts_output) \
	$(asset_videos_output)


include_paths := $(library_includes) \
    $(foreach comp, $(all_components), $(comp)/include) \
    $(foreach comp, $(cubemx_components), $(comp)/Inc) \
    $(foreach comp, $(touchgfx_generator_components), $(comp)/generated) \
    $(framework_includes) \
    $(cubemx_middlewares_path) \
    $(touchgfx_middlewares_path) \
    $(touchgfx_generator_components) \
    LIBJPEG/Target \
    $(libjpeg_path)/include \
    LIBJPEG/App

source_paths = $(foreach comp, $(all_components), $(comp)/src) \
    $(foreach comp, $(cubemx_components), $(comp)/Src) \
    $(touchgfx_generator_components)

# Finds files that matches the specified pattern. The directory list
# is searched recursively. It is safe to invoke this function with an
# empty list of directories.
#
# Param $(1): List of directories to search
# Param $(2): The file pattern to search for
define find
  $(foreach dir,$(1),$(foreach d,$(wildcard $(dir)/*),\
    $(call find,$(d),$(2))) $(wildcard $(dir)/$(strip $(2))))
endef
unexport find

fontconvert_ttf_lower_files := $(call find, $(asset_fonts_input), *.ttf)
fontconvert_ttf_upper_files := $(call find, $(asset_fonts_input), *.TTF)
fontconvert_otf_lower_files := $(call find, $(asset_fonts_input), *.otf)
fontconvert_otf_upper_files := $(call find, $(asset_fonts_input), *.OTF)
fontconvert_bdf_lower_files := $(call find, $(asset_fonts_input), *.bdf)
fontconvert_bdf_upper_files := $(call find, $(asset_fonts_input), *.BDF)
fontconvert_font_files := \
    $(fontconvert_ttf_lower_files) \
    $(fontconvert_ttf_upper_files) \
    $(fontconvert_otf_lower_files) \
    $(fontconvert_otf_upper_files) \
    $(fontconvert_bdf_lower_files) \
    $(fontconvert_bdf_upper_files)

video_files := $(call find, $(assets_videos_input),*.avi)

source_files := $(call find, $(source_paths),*.cpp)

board_c_files :=

board_c_files := \
	$(Drivers_path)/BSP/Components/ft5336/ft5336.c  \
	Middlewares/Third_Party/LibJPEG/source/jaricom.c \
	Middlewares/Third_Party/LibJPEG/source/jcomapi.c \
	Middlewares/Third_Party/LibJPEG/source/jdapimin.c \
	Middlewares/Third_Party/LibJPEG/source/jdapistd.c \
	Middlewares/Third_Party/LibJPEG/source/jdarith.c \
	Middlewares/Third_Party/LibJPEG/source/jdatasrc.c \
	Middlewares/Third_Party/LibJPEG/source/jdcoefct.c \
	Middlewares/Third_Party/LibJPEG/source/jdcolor.c \
	Middlewares/Third_Party/LibJPEG/source/jddctmgr.c \
	Middlewares/Third_Party/LibJPEG/source/jdhuff.c \
	Middlewares/Third_Party/LibJPEG/source/jdinput.c \
	Middlewares/Third_Party/LibJPEG/source/jdmainct.c \
	Middlewares/Third_Party/LibJPEG/source/jdmarker.c \
	Middlewares/Third_Party/LibJPEG/source/jdmaster.c \
	Middlewares/Third_Party/LibJPEG/source/jdmerge.c \
	Middlewares/Third_Party/LibJPEG/source/jdpostct.c \
	Middlewares/Third_Party/LibJPEG/source/jdsample.c \
	Middlewares/Third_Party/LibJPEG/source/jdtrans.c \
	Middlewares/Third_Party/LibJPEG/source/jerror.c \
	Middlewares/Third_Party/LibJPEG/source/jidctflt.c \
	Middlewares/Third_Party/LibJPEG/source/jidctfst.c \
	Middlewares/Third_Party/LibJPEG/source/jidctint.c \
	Middlewares/Third_Party/LibJPEG/source/jmemmgr.c \
	Middlewares/Third_Party/LibJPEG/source/jmemnobs.c \
	Middlewares/Third_Party/LibJPEG/source/jquant1.c \
	Middlewares/Third_Party/LibJPEG/source/jquant2.c \
	Middlewares/Third_Party/LibJPEG/source/jutils.c \
	LIBJPEG/App/libjpeg.c

board_cpp_files :=

board_include_paths := \
    Drivers/CMSIS/Device/ST/STM32F7xx/Include \
    Drivers/CMSIS/Include \
    $(cubemx_middlewares_path)/Third_Party/FreeRTOS/Source/CMSIS_RTOS_V2 \
    Drivers/BSP/Components/ft5336 \
    Drivers/BSP/STM32746G-Discovery

asm_source_files := $(makefile_path_relative)/startup_stm32f746nghx.s

c_compiler_options +=
cpp_compiler_options +=

include_paths += platform/os $(board_include_paths) $(os_include_paths)


c_source_files := $(makefile_path_relative)/sysmem.c $(makefile_path_relative)/syscalls.c $(call find, $(source_paths),*.c) $(os_source_files) $(board_c_files)
source_files += $(board_cpp_files)

libjpeg_source_path = Middlewares/Third_Party/LibJPEG/source
video_object_files := $(call find, $(asset_videos_output),*.o)

object_files := $(source_files) $(c_source_files)

object_files := $(filter-out Core/Src/syscalls.c, $(object_files)) # ignore potential cmake duplicate
object_files := $(filter-out Core/Src/sysmem.c, $(object_files)) # ignore potential cmake duplicate

# Start converting paths
object_files := $(object_files:$(touchgfx_path)/%.cpp=$(object_output_path)/touchgfx/%.o)
object_files := $(object_files:%.cpp=$(object_output_path)/%.o)
object_files := $(object_files:$(touchgfx_middlewares_path)/%.c=$(object_output_path)/$(touchgfx_middlewares_path)/%.o)
object_files := $(object_files:$(cubemx_middlewares_path)/%.c=$(object_output_path)/$(cubemx_middlewares_path)/%.o)
object_files := $(object_files:$(libjpeg_source_path)/%.c=$(object_output_path)/$(libjpeg_source_path)/%.o)
object_files := $(object_files:$(Drivers_path)/%.c=$(object_output_path)/Drivers/%.o)
object_files := $(object_files:%.c=$(object_output_path)/%.o)
dependency_files := $(object_files:%.o=%.d)

object_asm_files := $(asm_source_files:%.s=$(object_output_path)/%.o)
object_asm_files := $(patsubst $(object_output_path)/%,$(object_output_path)/%,$(object_asm_files))

textconvert_script_path := $(touchgfx_path)/framework/tools/textconvert
textconvert_executable := $(call find, $(textconvert_script_path), *.rb)
videoconvert_script_path := $(touchgfx_path)/framework/tools/videoconvert

text_database := $(asset_texts_input)/texts.xml

libraries := touchgfx
library_include_paths := $(touchgfx_path)/lib/core/$(platform)/gcc

.PHONY: _all_ _clean_ _assets_ _flash_ _intflash_ generate_assets build_executable

# Force linking each time
.PHONY: $(binary_output_path)/$(target_executable)

_all_: generate_assets

# if ExtFlashSection or FontFlashSection is detected inside the executable, enable external flash
flash_section_count := 0
elf_filename := "$(application_path)/$(binary_output_path)/$(target_executable)"
ifeq ($(shell test -e $(elf_filename) && echo -n has_elf_file),has_elf_file)
flash_section_count := $(shell readelf -S $(elf_filename) | grep FlashSection | wc -l)
endif

ifeq ($(shell test $(flash_section_count) -gt 0; echo $$?),0)
_flash_: _extflash_
else
_flash_: _intflash_
endif

include $(application_path)/gcc/include/flash_sections_int_ext.mk

generate_assets: _assets_
	@$(MAKE) -f $(makefile_name) -r -s $(MFLAGS) build_executable
build_executable: $(binary_output_path)/$(target_executable)

$(binary_output_path)/$(target_executable): $(object_files) $(object_asm_files)
	@echo Linking $(@)
	@mkdir -p $(@D)
	@mkdir -p $(object_output_path)
	@$(file >$(build_root_path)/objects.tmp) $(foreach F,$(object_files) $(video_object_files),$(file >>$(build_root_path)/objects.tmp,$F))
	@$(linker) \
		$(linker_options) -T $(makefile_path_relative)/../STM32F746XX_FLASH.ld -Wl,-Map=$(@D)/application.map $(linker_options_local) \
		$(patsubst %,-L%,$(library_include_paths)) \
		@$(build_root_path)/objects.tmp $(object_asm_files) -o $@ \
		-Wl,--start-group $(patsubst %,-l%,$(libraries)) -Wl,--end-group
	@rm -f $(build_root_path)/objects.tmp
	@echo "Producing additional output formats..."
	@echo "  target.hex   - Combined internal+external hex"
	@$(objcopy) -O ihex $@ $(@D)/target.hex
	@echo "  intflash.elf - Internal flash, elf debug"
	@$(objcopy) --remove-section=ExtFlashSection $@ $(@D)/intflash.elf 2>/dev/null
	@echo "  intflash.hex - Internal flash, hex"
	@$(objcopy) -O ihex --remove-section=ExtFlashSection --remove-section=FontFlashSection --remove-section=TextFlashSection $@ $(@D)/intflash.hex
	# re-enable if extflash binaries are required in your workflow
	# @echo "  extflash.bin - External flash, binary"
	# @$(objcopy) -O binary --only-section=*FlashSection $@ $(@D)/extflash.bin

$(object_output_path)/touchgfx/%.o: $(touchgfx_path)/%.cpp TouchGFX/config/gcc/app.mk
	@echo Compiling $<
	@mkdir -p $(@D)
	@$(cpp_compiler) \
		-MMD -MP $(cpp_compiler_options) $(cpp_compiler_options_local) $(user_cflags) \
		$(patsubst %,-I%,$(include_paths)) \
		-c $< -o $@

$(object_output_path)/%.o: %.cpp TouchGFX/config/gcc/app.mk
	@echo Compiling $<
	@mkdir -p $(@D)
	@$(cpp_compiler) \
		-MMD -MP $(cpp_compiler_options) $(cpp_compiler_options_local) $(user_cflags) \
		$(patsubst %,-I%,$(include_paths)) \
		-c $< -o $@

$(object_output_path)/touchgfx/%.o: $(touchgfx_path)/%.c TouchGFX/config/gcc/app.mk
	@echo Compiling $<
	@mkdir -p $(@D)
	@$(c_compiler) \
		-MMD -MP $(c_compiler_options) $(c_compiler_options_local) $(user_cflags) \
		$(patsubst %,-I%,$(include_paths)) \
		-c $< -o $@

$(object_output_path)/%.o: %.c TouchGFX/config/gcc/app.mk
	@echo Compiling $<
	@mkdir -p $(@D)
	@$(c_compiler) \
		-MMD -MP $(c_compiler_options) $(c_compiler_options_local) $(user_cflags) \
		$(patsubst %,-I%,$(include_paths)) \
		-c $< -o $@

$(object_output_path)/%.o: %.s TouchGFX/config/gcc/app.mk
	@echo Compiling ASM $<
	@mkdir -p $(@D)
	@$(assembler) \
		$(assembler_options) \
		$(patsubst %,-I %,$(os_include_paths)) \
		-c $< -o $@

ifeq ($(MAKECMDGOALS),build_executable)
$(firstword $(dependency_files)): TouchGFX/config/gcc/app.mk
	@rm -rf $(object_output_path)
-include $(dependency_files)
endif

_assets_: BitmapDatabase TextKeysAndLanguages Videos

.PHONY: BitmapDatabase TextKeysAndLanguages Videos

BitmapDatabase:
	@$(imageconvert_executable) -r $(asset_images_input) -w $(asset_images_output)

TextKeysAndLanguages:
	@mkdir -p $(asset_texts_output)/include/texts
	@ruby $(textconvert_script_path)/main.rb $(text_database) $(fontconvert_executable) $(asset_fonts_output) $(asset_texts_output) $(asset_fonts_input) TouchGFX $(text_converter_options)

Videos:
	@ruby $(videoconvert_script_path)/videoconvert.rb $(asset_videos_input) $(asset_videos_output)

_clean_:
	@echo Cleaning
	@rm -rf $(build_root_path)
	# Do not remove gui_generated
	@rm -rf $(asset_images_output)
	@rm -rf $(asset_fonts_output)
	@rm -rf $(asset_texts_output)
	@rm -rf $(asset_videos_output)
	# Create directory to avoid error if it does not exist
	@mkdir -p $(asset_root_path)
	# Remove assets folder if it is empty (i.e. no gui_generated folder)
	@rmdir --ignore-fail-on-non-empty $(asset_root_path)