Rework the vboot_reference make system.

host/Makefile

 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # 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