benchmark/make is no longer a trap

benchmark/Makefile

@@ -3,11 +3,6 @@
 CXXFLAGS := -O2
 BUILD.cpp := ${CXX} ${CXXFLAGS} ${CPPFLAGS}
 
-test: build
-	export LD_LIBRARY_PATH=$$(realpath .):$$LD_LIBRARY_PATH
-	perf stat -r 10000 ./gnu_racer.out
-	perf stat -r 10000 ./jeger_racer.out
-
 build: jeger gnu
 
 jeger: ../source/vector.c ../source/jeger.c jeger_racer.cpp
@@ -18,5 +13,12 @@ jeger: ../source/vector.c ../source/jeger.c jeger_racer.cpp
 gnu: gnu_racer.cpp
 	${BUILD.cpp} gnu_racer.cpp -o gnu_racer.out
 
+test: build
+	export LD_LIBRARY_PATH=$$(realpath .):$$LD_LIBRARY_PATH
+	perf stat -r 10000 ./gnu_racer.out
+	perf stat -r 10000 ./jeger_racer.out
+
 clean:
 	rm *.so *.out
+
+.PHONY: test