Makefile was installing to /usr when prefix was specified incorrectly.

Should work For Real This Time™️.

src/Makefile

@@ -4,7 +4,7 @@ CC	= cc
 CFLAGS	= -Wall -O2
 LDFLAGS = -static
 LDLIBS	=
-PREFIX = usr/local/bin/
+PREFIX = usr/local/
 DESTDIR = 
 BIN =  cat\
  false\
@@ -21,7 +21,7 @@ false: true
 
 install: all
 	mkdir -p ${DESTDIR}/${PREFIX}
-	install -Dm0755 ${BIN} ${DESTDIR}/${PREFIX}/
+	install -Dm0755 ${BIN} ${DESTDIR}/${PREFIX}/bin/
 
 clean: 
 	rm ${BIN} *.o