Makefile

include config.mk
-include localconfig.mk

###########################################################################
#
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#   #     #            #            #     #         #     #           ###
#   #                  #            #     #         #     #           ###
#    #####             #            #     #         ######             #
#         #            #            #     #         #
#   #     #            #            #     #         #                 ###
#    #####             #            #######         #                 ###
#
#
# You should not have to change anything below unless you are working on
# build infrastructure.  You probably want to be editing config.mk or
# localconfig.mk.
#

GREEN=\033[32;01m
RED=\033[31;01m
STOP=\033[0m

ifeq ($(VERBOSE),)
QUIET = @
SAY = @echo "${GREEN}"$(1)"${STOP}"
else
QUIET =
SAY =
endif

# Do not override this here!  Override this in localconfig.mk.
ifeq ($(shell uname -s),Darwin)
PEBBLE_TOOLCHAIN_PATH ?= /usr/local/Cellar/pebble-toolchain/2.0/arm-cs-tools/bin
else
PEBBLE_TOOLCHAIN_PATH ?= /usr/bin
endif

# Do not override this here!  Override this in localconfig.mk.
PFX ?= $(PEBBLE_TOOLCHAIN_PATH)/arm-none-eabi-

CC = $(PFX)gcc
LD = $(PFX)ld
GDB = $(PFX)gdb
OBJCOPY = $(PFX)objcopy

# Do not override this here!  Override this in localconfig.mk.
QEMU ?= qemu-pebble

# output directory
BUILD = build

all: $(PLATFORMS)

# Build rules for each platform, evaluated below.
define PLATFORM_template

$(eval OBJS_$(1) = $(addprefix $(BUILD)/$(1)/,$(addsuffix .o,$(basename $(SRCS_$(1))))) )
$(eval DEPS_$(1) = $(addprefix $(BUILD)/$(1)/,$(addsuffix .d,$(basename $(SRCS_$(1))))) )

-include $(DEPS_$(1))

$(1): $(BUILD)/$(1)/tintin_fw.bin

$(1)_qemu: $(BUILD)/$(1)/fw.qemu_flash.bin
	$(QEMU) -rtc base=localtime -serial null -serial null -serial stdio -gdb tcp::63770,server $(QEMUFLAGS_$(1)) -pflash $(BUILD)/$(1)/fw.qemu_flash.bin -$(QEMUSPITYPE_$(1)) Resources/$(1)_spi.bin $(QEMUFLAGS)

$(1)_gdb:
	$(PFX)gdb -ex 'target remote localhost:63770' -ex "sym $(BUILD)/$(1)/tintin_fw.elf"

$(BUILD)/$(1)/tintin_fw.elf: $(OBJS_$(1))
	$(call SAY,[$(1)] LD $$@)
	@mkdir -p $$(dir $$@)
	$(QUIET)$(CC) $(CFLAGS_$(1)) $(LDFLAGS_$(1)) -Wl,-Map,$(BUILD)/$(1)/tintin_fw.map -o $$@ $(OBJS_$(1)) $(LIBS_$(1))
	$(QUIET)Utilities/space.sh $(BUILD)/$(1)/tintin_fw.map

$(BUILD)/$(1)/%.o: %.c
	$(call SAY,[$(1)] CC $$<)
	@mkdir -p $$(dir $$@)
	$(QUIET)$(CC) $(CFLAGS_$(1)) -MMD -MP -MT $$@ -MF $$(addsuffix .d,$$(basename $$@)) -c -o $$@ $$< 

$(BUILD)/$(1)/%.o: %.s
	$(call SAY,[$(1)] AS $$<)
	@mkdir -p $$(dir $$@)
	$(QUIET)$(CC) $(CFLAGS_$(1)) -c -o $$@ $$< 
	
$(BUILD)/$(1)/Resources/%_fpga.o: Resources/%_fpga.bin
	$(call SAY,[$(1)] FPGA $$<)
	@mkdir -p $$(dir $$@)
	$(QUIET)$(OBJCOPY) --rename-section .data=.rodata,contents,alloc,load,readonly,data -I binary -O elf32-littlearm -B armv5te $$< $$@

Resources/$(1)_fpga.bin:
	@echo "${RED}Error: platform '$(1)' needs an FPGA binary file in order to build.  Please extract or download one, and put it in $$@. ${STOP}"; exit 1

$(BUILD)/$(1)/fw.qemu_flash.bin: Resources/$(1)_boot.bin $(BUILD)/$(1)/tintin_fw.bin
	$(call SAY,[$(1)] QEMU-BIN $$<)
	@mkdir -p $$(dir $$@)
	$(QUIET)cat Resources/$(1)_boot.bin $(BUILD)/$(1)/tintin_fw.bin > $(BUILD)/$(1)/fw.qemu_flash.bin

.PRECIOUS: out/$(1)/tintin_fw.bin out/$(1)/tintin_fw.elf

endef
$(foreach platform,$(PLATFORMS),$(eval $(call PLATFORM_template,$(platform))))

# Build rules that do not depend on target parameters.
%.bin: %.elf
	$(call SAY,OBJCOPY $@)
	$(QUIET)$(PFX)objcopy $< -O binary $@

clean:
	rm -rf $(BUILD)

.PHONY: clean


# XXX: still need to add rules to build a .pbz