Add helper functions and files for gpt tests.

src/platform/vboot_reference/cgptlib/Makefile

Index: src/platform/vboot_reference/cgptlib/Makefile
diff --git a/src/platform/vboot_reference/cgptlib/Makefile b/src/platform/vboot_reference/cgptlib/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..418163c2527f7f3262a5ea9976c0be7e153f7bd1
--- /dev/null
+++ b/src/platform/vboot_reference/cgptlib/Makefile
@@ -0,0 +1,24 @@
+# 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.
+
+CFLAGS ?= -Wall -Werror -ansi
+INCLUDES += tests
+SUBDIRS = tests
+
+all: cgpt.a
+	for i in $(SUBDIRS); do \
+	( cd $$i ; $(MAKE)) ; \
+	done
+
+.c.o:
+	$(CC) $(CFLAGS) $(INCLUDES) -c $< -o $@
+
+cgpt.a: cgpt.o
+	$(AR) rs cgpt.a $<
+
+clean:
+	for i in $(SUBDIRS); do \
+	( $(MAKE) -C $$i clean ) ; \
+	done
+	rm -f cgpt cgpt-host *.o *~ *.a