CXX = g++
BUILD = .build
TARGET = upload
OPT = g -g

CFLAGS = -Wall -Wextra -std=c++20 -O$(OPT) -flto -Iinclude -Ilibs/serial/include -Ilibs/CLI11/include
LDFLAGS = -Wall -Wextra -O$(OPT) -flto

SRC = \
src/main.cpp \
libs/serial/src/serial.cc \
libs/serial/src/impl/unix.cc \
libs/serial/src/impl/list_ports/list_ports_linux.cc \

OBJ_1 = $(notdir $(SRC:.cpp=.o))
OBJ_2 = $(notdir $(OBJ_1:.cc=.o))
OBJ = $(addprefix $(BUILD)/, $(OBJ_2))
# We can't use this as it will use the wrong main
# vpath %.c $(sort $(dir $(SRC)))
vpath %.cpp $(dir $(SRC))
vpath %.cc $(dir $(SRC))

.PHONY: all clean

all: $(BUILD) $(BUILD)/$(TARGET)

$(BUILD)/%.o: %.cpp Makefile | $(BUILD)
	$(CXX) -c $(CFLAGS) $< -o $@

$(BUILD)/%.o: %.cc Makefile | $(BUILD)
	$(CXX) -c $(CFLAGS) $< -o $@

$(BUILD)/$(TARGET): $(OBJ) Makefile
	$(CXX) $(LDFLAGS) $(OBJ) -o $@

$(BUILD):
	mkdir $@

clean:
	rm -fr $(BUILD)