Rework the vboot_reference make system.

host/Makefile

Index: host/Makefile
diff --git a/host/Makefile b/host/Makefile
index f0bdf85556c7f626586824ab1ac1f9a01308c954..7f1c9f15f4547a7f19fa860279173085c3bbafc8 100644
--- a/host/Makefile
+++ b/host/Makefile
@@ -2,46 +2,31 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-LIBNAME = vboot_host.a
-
-CC ?= gcc
-CFLAGS = -Wall -DNDEBUG -O3 -Werror
-
 HOSTTOP := $(shell pwd)
-LIBDIR = $(HOSTTOP)/lib
 TESTDIR = $(HOSTTOP)/linktest
+BUILD_ROOT := ${BUILD}/$(shell basename ${HOSTTOP})
 
 INCLUDES += \
 	-I$(HOSTTOP)/include \
 	-I$(FWDIR)/lib/include \
 	-I$(FWDIR)/lib/cgptlib/include \
-	-I$(FWDIR)/lib/cryptolib/include 
+	-I$(FWDIR)/lib/cryptolib/include
 
 # find ./lib -iname '*.c' | sort
-LIB_SRCS = \
+ALL_SRCS = \
 	./lib/host_common.c \
 	./lib/host_key.c \
 	./lib/host_keyblock.c \
 	./lib/host_misc.c \
-	./lib/host_signature.c 
+	./lib/host_signature.c
 
-LIB_OBJS = $(LIB_SRCS:%.c=%.o)
 
-test : $(LIBNAME)
-	$(CC) $(CFLAGS) $(INCLUDES) -o $(TESTDIR)/a.out $(TESTDIR)/main.c \
-	$(LIBNAME) $(FWLIB) -lcrypto
+test : $(HOSTLIB)
+	$(CC) $(CFLAGS) $(INCLUDES) -o $(BUILD_ROOT)/a.out $(TESTDIR)/main.c \
+	$(HOSTLIB) $(FWLIB) -lcrypto
 
-$(LIBNAME) : $(LIB_OBJS) $(STUB_OBJS)
+include ../common.mk
+
+$(HOSTLIB) : $(ALL_OBJS)
 	rm -f $@
 	ar qc $@ $^
-
-%o : %c
-	$(CC) $(CFLAGS) $(INCLUDES) -c -o $@ $<
-
-clean: FORCE
-	rm -f $(LIBNAME) $(LIB_OBJS) $(STUB_OBJS) $(TESTDIR)/a.out
-
-FORCE:
-
-
-.PHONY: FORCE