TARGET ?= host
TARGET := $(filter host stm32f0 stm32f1,${TARGET})

ifeq (${TARGET},)
$(error No support available for the target)
endif

BUILD ?= build
BUILD := $(addsuffix /${TARGET},${BUILD})

all: $(BUILD)/tbm

-include scripts/Makefile.${TARGET}

CFLAGS += -DTBM_VERSION=\"2017-10-31\"
CFLAGS += -Iinclude
CFLAGS += -Wall -Wextra -Wshadow -Wimplicit-function-declaration
CFLAGS += -Wredundant-decls -pedantic
CFLAGS += -D_XOPEN_SOURCE

CFLAGS += -std=c99
CFLAGS += -Os -flto
LDFLAGS += -Os -flto

TEST_LIBS += -lcmocka

-include source/Makefile

obj = $(addprefix $(BUILD)/, $(obj-y))

tbm-obj = $(addprefix $(BUILD)/, $(tbm-obj-y))
tbm-obj += $(obj)

test-obj = $(addprefix $(BUILD)/, $(test-obj-y))
test-obj += $(obj)

# Include the dependencies.
-include $(obj:.o=.d)

# Set up the toolchain.
CC := $(PREFIX)gcc
LD := $(PREFIX)gcc
GDB := $(PREFIX)gdb
MAKE := make

.SECONDARY:

clean:
	@echo "CLEAN"
	@rm -rf $(BUILD)

# Rule to compile C source code.
$(BUILD)/%.o: %.c
	@echo "CC $<"
	@mkdir -p $(dir $@)
	@$(CC) -c $< -o $@ $(CFLAGS) -MT $@ -MMD -MP -MF $(@:.o=.d)

$(BUILD)/tbm: $(tbm-obj) $(LDSCRIPT)
	@echo "LD $@"
	@mkdir -p $(dir $@)
	@$(LD) -o $@ $(CFLAGS) $(LDFLAGS) $(tbm-obj) $(LIBS)

$(BUILD)/test: CFLAGS += $(TEST_CFLAGS)
$(BUILD)/test: $(test-obj)
	@echo "LD $@"
	@mkdir -p $(dir $@)
	@$(LD) -o $@ $(CFLAGS) $(LDFLAGS) $(TEST_LDFLAGS) $(test-obj) $(LIBS) $(TEST_LIBS)

test: $(BUILD)/test
	@$(BUILD)/test

.PHONY: clean test