TARGET_EXEC := stc8prog
BUILD_DIR := ./build
SRC_DIRS := ./src

TARGET_OS :=
ifeq ($(OS),Windows_NT)
	TARGET_OS += win32
	SRC_DIRS += ./src/serial/win32
else
	UNAME_S := $(shell uname -s)
	ifeq ($(UNAME_S),Linux)
		TARGET_OS += Linux
		SRC_DIRS += ./src/serial/linux
	endif
	ifeq ($(UNAME_S),Darwin)
		TARGET_OS += Darwin
		SRC_DIRS += ./src/serial/linux
	endif
endif

# Find all the C files we want to compile
# Note the single quotes around the * expressions. Make will incorrectly expand these otherwise.
SRCS := $(shell find $(SRC_DIRS) -maxdepth 1 -name '*.c')

# String substitution for every source file.
OBJS := $(SRCS:%=$(BUILD_DIR)/%.o)

# Every folder in ./src will need to be passed to GCC so that it can find header files
INC_DIRS := $(shell find $(SRC_DIRS) -maxdepth 1 -type d)
# Add a prefix to INC_DIRS. So moduleA would become -ImoduleA. GCC understands this -I flag
INC_FLAGS := $(addprefix -I,$(INC_DIRS))

# The final build step.
./$(TARGET_EXEC): $(OBJS)
ifeq ($(TARGET_OS),win32)
	@echo -e "\e[34mMKPE\e[0m	" $@
else
	@echo -e "\e[34mMKELF\e[0m	" $@
endif
	@$(CC) $(OBJS) -o $@ $(LDFLAGS)

# Build step for C source
$(BUILD_DIR)/%.c.o: %.c
	@mkdir -p $(dir $@)
	@echo -e "\e[32mCC\e[0m	" $@
	@$(CC) $(CFLAGS) $(INC_FLAGS) -c $< -o $@

install:
ifeq ($(TARGET_OS),win32)	
	@echo "Windows users must copy binary to desired location manually"
else
	@echo "It is better to use the system installer of your distribution"
	@echo "For gentoo - rasdark overlay, dev-embedded/stc8prog"
#Binary path from XuHg-zjcn	
	install $(TARGET_EXEC) /usr/local/bin
endif

.PHONY: clean
clean:
	@rm -f -r $(BUILD_DIR)
	@rm -f ./$(TARGET_EXEC)