-SOURCES := $(shell find ./src -type f -name '*.c')
-HEADERS := $(shell find ./src -type f -name '*.h')
-OBJS := $(patsubst %.c, %.o, $(SOURCES))
+SOURCES = $(shell find ./src -type f -name '*.c')
+HEADERS = $(shell find ./src -type f -name '*.h')
+OBJS = $(patsubst %.c, %.o, $(SOURCES))