--- Makefile
+++ Makefile
@@ -1,5 +1,5 @@
 all:
-	g++ -O3 -Wall -o clockywock clockywock.cpp -lncurses -lpthread
+	${CXX} ${CXXFLAGS} ${LDFLAGS} -o clockywock clockywock.cpp -lncurses -lpthread
 
 # install is done completely lazily
 install: