Compilation Failure of NANDWRITER

Hello,

I am getting issues during compiling NANDWRITER CCS project for DM644X

I am using the CCS3.3 for compilation. I have downloaded the source from

http://arago-project.org/files/releases/davinci-psp_3.x.0.0-r37/sources/flash-utils-davinci.tar.gz

Here is the errors.

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undefined                        first referenced
 symbol                              in file
---------                        ----------------
_EXTERNAL_RAM_START              C:NAND_WRITER\Debug\device.obj
_EXTERNAL_RAM_END                C:\NAND_WRITER\Debug\util.obj
>>   error: symbol referencing errors - './Debug/I2C.out' not built

>> Compilation failure

Build Complete,
  2 Errors, 10 Warnings, 0 Remarks.

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Please let me know where is the issue.