Explicitly list dependency files instead of searching for them.

src/platform/vboot_reference/vboot_firmware/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_fw.a
 
 CC ?= gcc
 CFLAGS = -Wall -DNDEBUG -O3 -Werror
 
 FWTOP := $(shell pwd)
 LIBDIR = $(FWTOP)/lib
 STUBDIR = $(FWTOP)/stub
 TESTDIR = $(FWTOP)/linktest
 
 INC = \
         -I$(FWTOP)/include \
         -I$(LIBDIR)/include \
         -I$(LIBDIR)/cgptlib/include \
         -I$(LIBDIR)/cryptolib/include
 
 
-LIB_SRCS := $(shell find $(LIBDIR) -iname '*.c')
-LIB_OBJS := $(LIB_SRCS:%.c=%.o)
+# find ./lib -iname '*.c' | sort
+LIB_SRCS = \
+        ./lib/cgptlib/cgptlib.c \
+        ./lib/cgptlib/cgptlib_internal.c \
+        ./lib/cgptlib/crc32.c \
+        ./lib/cryptolib/padding.c \
+        ./lib/cryptolib/rsa.c \
+        ./lib/cryptolib/rsa_utility.c \
+        ./lib/cryptolib/sha1.c \
+        ./lib/cryptolib/sha2.c \
+        ./lib/cryptolib/sha_utility.c \
+        ./lib/firmware_image_fw.c \
+        ./lib/kernel_image_fw.c \
+        ./lib/load_kernel_fw.c \
+        ./lib/rollback_index.c \
+        ./lib/stateful_util.c \
+        ./lib/tlcl.c
 
-STUB_SRCS := $(shell find $(STUBDIR) -iname '*.c')
-STUB_OBJS := $(STUB_SRCS:%.c=%.o)
+LIB_OBJS = $(LIB_SRCS:%.c=%.o)
+
+# find ./stub -iname '*.c' | sort
+STUB_SRCS = \
+        ./stub/boot_device_stub.c \
+        ./stub/utility_stub.c
+
+STUB_OBJS = $(STUB_SRCS:%.c=%.o)
 
 
 test : $(LIBNAME)
         $(CC) $(CFLAGS) $(INC) -o $(TESTDIR)/a.out $(TESTDIR)/main.c $(LIBNAME)
 
 $(LIBNAME) : $(LIB_OBJS) $(STUB_OBJS)
         rm -f $@
         ar qc $@ $^
 
 %o : %c
         $(CC) $(CFLAGS) $(INC) -c -o $@ $<
 
 clean: FORCE
         rm -f $(LIBNAME) $(LIB_OBJS) $(STUB_OBJS) $(TESTDIR)/a.out
 
 FORCE:
 
 
 .PHONY: FORCE