--- a/Makefile
+++ b/Makefile
@@ -35,7 +35,7 @@ ARCH		= $(shell uname -m)
 RPMSOURCEDIR	= $(shell rpm --eval '%_sourcedir')
 RPMSPECDIR	= $(shell rpm --eval '%_specdir')
 
-CC		= gcc
+BUILD_ROOT	= $(DESTDIR)
 INCLUDE		=
 SBIN		= $(BUILD_ROOT)/sbin
 MANDIR		= usr/man
@@ -46,9 +46,9 @@ INSTALL		= install
 STATIC_LIBS	= libipvs/libipvs.a
 
 ifeq "${ARCH}" "sparc64"
-    CFLAGS = -Wall -Wunused -Wstrict-prototypes -g -m64 -pipe -mcpu=ultrasparc -mcmodel=medlow
+    CFLAGS += -Wall -Wunused -Wstrict-prototypes -g -m64 -pipe -mcpu=ultrasparc -mcmodel=medlow
 else
-    CFLAGS = -Wall -Wunused -Wstrict-prototypes -g
+    CFLAGS += -Wall -Wunused -Wstrict-prototypes -g
 endif
 
 
@@ -83,8 +83,9 @@ DEFINES		+= $(shell if [ ! -f ../ip_vs.h
 
 all:            libs ipvsadm
 
+$(STATIC_LIBS): libs
 libs:
-		make -C libipvs
+		$(MAKE) -C libipvs
 
 ipvsadm:	$(OBJS) $(STATIC_LIBS)
 		$(CC) $(CFLAGS) -o $@ $^ $(LIBS)
@@ -106,7 +107,7 @@ clean:
 		rm -rf debian/tmp
 		find . -name '*.[ao]' -o -name "*~" -o -name "*.orig" \
 		  -o -name "*.rej" -o -name core | xargs rm -f
-		make -C libipvs clean
+		$(MAKE) -C libipvs clean
 
 distclean:	clean
 
--- a/libipvs/Makefile
+++ b/libipvs/Makefile
@@ -1,7 +1,7 @@
 # Makefile for libipvs
 
 CC		= gcc
-CFLAGS		= -Wall -Wunused -Wstrict-prototypes -g -fPIC
+CFLAGS		+= -Wall -Wunused -Wstrict-prototypes -g -fPIC
 ifneq (0,$(HAVE_NL))
 CFLAGS		+= -DLIBIPVS_USE_NL
 CFLAGS		+= $(shell \
