cachelab finished again

cachelab/Makefile

@@ -8,7 +8,8 @@ LDFLAGS +=
 
 LDLIBS   += -lzstd
 
-CPPFLAGS := -Ofast -Wall -Wextra -Winline -Winit-self -Wno-sequence-point\
+
+CPPFLAGS := -O3 -Wall -Wextra -Winline -Winit-self -Wno-sequence-point\
            -Wno-unused-function -Wno-inline -fPIC -W -Wcast-qual -Wpointer-arith -Icbsl/include
 
 #CPPFLAGS := -g
@@ -19,7 +20,7 @@ objects = Cache.o CacheHelper.o getopt.o cbsl/src/buffer.o cbsl/src/file.o cbsl/
 all: $(PROGRAMS)
 
 Cache : $(objects)
-	icx $(CPPFLAGS) $(LDFLAGS) -o $@ $^ $(LDLIBS)
+	gcc $(CPPFLAGS) $(LDFLAGS) -o $@ $^ $(LDLIBS)
 	rm -f $(objects)
 
 clean: