CC=gcc CFLAGS=$(shell pkg-config --cflags libusb-1.0) -O3 -Wall -shared LDFLAGS=$(shell pkg-config --libs libusb-1.0) BUILD_DIR=../../../build/ all: $(BUILD_DIR)/drivers/gwolves-htx.so $(BUILD_DIR)/drivers/gwolves-htx.so: htx.c | $(BUILD_DIR)/drivers/ gcc $(CFLAGS) -o $@ $^