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diff --git a/BaseTools/Source/C/Common/CommonLib.h b/BaseTools/Source/C/Common/CommonLib.h
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+++ b/BaseTools/Source/C/Common/CommonLib.h
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+/** @file
+
+Copyright (c) 2004 - 2008, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution.  The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+Module Name:
+
+  CommonLib.h
+
+Abstract:
+
+  Common library assistance routines.
+
+**/
+
+#ifndef _EFI_COMMON_LIB_H
+#define _EFI_COMMON_LIB_H
+
+#include <Common/UefiBaseTypes.h>
+#include <Common/BuildVersion.h>
+#define PRINTED_GUID_BUFFER_SIZE  37  // including null-termination
+//
+// Function declarations
+//
+VOID
+PeiZeroMem (
+  IN VOID   *Buffer,
+  IN UINTN  Size
+  )
+;
+
+VOID
+PeiCopyMem (
+  IN VOID   *Destination,
+  IN VOID   *Source,
+  IN UINTN  Length
+  )
+;
+
+VOID
+ZeroMem (
+  IN VOID   *Buffer,
+  IN UINTN  Size
+  )
+;
+
+VOID
+CopyMem (
+  IN VOID   *Destination,
+  IN VOID   *Source,
+  IN UINTN  Length
+  )
+;
+
+INTN
+CompareGuid (
+  IN EFI_GUID     *Guid1,
+  IN EFI_GUID     *Guid2
+  )
+;
+
+EFI_STATUS
+GetFileImage (
+  IN CHAR8    *InputFileName,
+  OUT CHAR8   **InputFileImage,
+  OUT UINT32  *BytesRead
+  )
+;
+
+EFI_STATUS
+PutFileImage (
+  IN CHAR8    *OutputFileName,
+  IN CHAR8    *OutputFileImage,
+  IN UINT32   BytesToWrite
+  )
+;
+/*++
+
+Routine Description:
+
+  This function opens a file and writes OutputFileImage into the file.
+
+Arguments:
+
+  OutputFileName     The name of the file to write.
+  OutputFileImage    A pointer to the memory buffer.
+  BytesToWrite       The size of the memory buffer.
+
+Returns:
+
+  EFI_SUCCESS              The function completed successfully.
+  EFI_INVALID_PARAMETER    One of the input parameters was invalid.
+  EFI_ABORTED              An error occurred.
+  EFI_OUT_OF_RESOURCES     No resource to complete operations.
+
+**/
+
+UINT8
+CalculateChecksum8 (
+  IN UINT8        *Buffer,
+  IN UINTN        Size
+  )
+;
+
+UINT8
+CalculateSum8 (
+  IN UINT8        *Buffer,
+  IN UINTN        Size
+  )
+;
+
+UINT16
+CalculateChecksum16 (
+  IN UINT16       *Buffer,
+  IN UINTN        Size
+  )
+;
+
+UINT16
+CalculateSum16 (
+  IN UINT16       *Buffer,
+  IN UINTN        Size
+  )
+;
+
+EFI_STATUS
+PrintGuid (
+  IN EFI_GUID                     *Guid
+  )
+;
+
+#define PRINTED_GUID_BUFFER_SIZE  37  // including null-termination
+EFI_STATUS
+PrintGuidToBuffer (
+  IN EFI_GUID     *Guid,
+  IN OUT UINT8    *Buffer,
+  IN UINT32       BufferLen,
+  IN BOOLEAN      Uppercase
+  )
+;
+
+#define ASSERT(x) assert(x)
+
+#ifdef __GNUC__
+#include <stdio.h>
+#include <sys/stat.h>
+#define stricmp strcasecmp
+#define _stricmp strcasecmp
+#define strnicmp strncasecmp
+#define strcmpi strcasecmp
+size_t _filelength(int fd);
+#ifndef __CYGWIN__
+char *strlwr(char *s);
+#endif
+#endif
+
+//
+// On windows, mkdir only has one parameter.
+// On unix, it has two parameters
+//
+#if defined(__GNUC__)
+#define mkdir(dir, perm) mkdir(dir, perm)
+#else
+#define mkdir(dir, perm) mkdir(dir)
+#endif
+
+#endif