update lab1-8 Makefile for clang compiling

labcodes/lab1/Makefile

@@ -53,7 +53,7 @@ CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 &
 else
 HOSTCC		:= clang
 HOSTCFLAGS	:= -g -Wall -O2
-CC		:= $(GCCPREFIX)clang
+CC		:= clang
 CFLAGS	:= -fno-builtin -Wall -g -m32 -mno-sse -nostdinc $(DEFS)
 CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
 endif

labcodes/lab2/Makefile

@@ -53,7 +53,7 @@ CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 &
 else
 HOSTCC		:= clang
 HOSTCFLAGS	:= -g -Wall -O2
-CC		:= $(GCCPREFIX)clang
+CC		:= clang
 CFLAGS	:= -fno-builtin -Wall -g -m32 -mno-sse -nostdinc $(DEFS)
 CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
 endif

labcodes/lab3/Makefile

@@ -53,7 +53,7 @@ CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 &
 else
 HOSTCC		:= clang
 HOSTCFLAGS	:= -g -Wall -O2
-CC		:= $(GCCPREFIX)clang
+CC		:= clang
 CFLAGS	:= -fno-builtin -Wall -g -m32 -mno-sse -nostdinc $(DEFS)
 CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
 endif

labcodes/lab4/Makefile

@@ -53,7 +53,7 @@ CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 &
 else
 HOSTCC		:= clang
 HOSTCFLAGS	:= -g -Wall -O2
-CC		:= $(GCCPREFIX)clang
+CC		:= clang
 CFLAGS	:= -fno-builtin -Wall -g -m32 -mno-sse -nostdinc $(DEFS)
 CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
 endif

labcodes/lab5/Makefile

@@ -53,7 +53,7 @@ CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 &
 else
 HOSTCC		:= clang
 HOSTCFLAGS	:= -g -Wall -O2
-CC		:= $(GCCPREFIX)clang
+CC		:= clang
 CFLAGS	:= -fno-builtin -Wall -g -m32 -mno-sse -nostdinc $(DEFS)
 CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
 endif

labcodes/lab6/Makefile

@@ -53,7 +53,7 @@ CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 &
 else
 HOSTCC		:= clang
 HOSTCFLAGS	:= -g -Wall -O2
-CC		:= $(GCCPREFIX)clang
+CC		:= clang
 CFLAGS	:= -fno-builtin -Wall -g -m32 -mno-sse -nostdinc $(DEFS)
 CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
 endif

labcodes/lab7/Makefile

@@ -53,7 +53,7 @@ CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 &
 else
 HOSTCC		:= clang
 HOSTCFLAGS	:= -g -Wall -O2
-CC		:= $(GCCPREFIX)clang
+CC		:= clang
 CFLAGS	:= -fno-builtin -Wall -g -m32 -mno-sse -nostdinc $(DEFS)
 CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
 endif

labcodes/lab8/Makefile

@@ -53,7 +53,7 @@ CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 &
 else
 HOSTCC		:= clang
 HOSTCFLAGS	:= -g -Wall -O2
-CC		:= $(GCCPREFIX)clang
+CC		:= clang
 CFLAGS	:= -fno-builtin -Wall -g -m32 -mno-sse -nostdinc $(DEFS)
 CFLAGS	+= $(shell $(CC) -fno-stack-protector -E -x c /dev/null >/dev/null 2>&1 && echo -fno-stack-protector)
 endif
@@ -369,7 +369,7 @@ print-%:
 .PHONY: clean dist-clean handin packall tags
 clean:
 	$(V)$(RM) $(GRADE_GDB_IN) $(GRADE_QEMU_OUT)  $(SFSBINS) cscope* tags
-	-$(RM) -r $(OBJDIR) $(BINDIR)
+	$(V)$(RM) -r $(OBJDIR) $(BINDIR) $(SFSROOT)
 
 dist-clean: clean
 	-$(RM) $(HANDIN)