Teamcenter 9.1: Can not Compile and Link in (64bit version)

I was trying to build using Teamcenter 9.1 libraries. So I encountered linking errors. I searched GTAC and I found the following PR which has no solution. 
I have found a solution for this PR.
Symptom

Problem/Questions/Request:Problem
When compile error is occur to build in the "-64bit" option of Tc9.1 (64bit version).
This message is displayed when you compile.
fatal error C1189: #error : Sorry, you have to change unidefs.h to make this work on this machine.
Therefore, result of changing the "unidefs.h", was able to compile.
However, link error occurs.
sample.obj: error LNK2019:
External symbol "__imp__ITEM_find_item" unresolved was referenced in function "_sample_validate_item_rev_id"
sample.obj: error LNK2019:
External symbol "__imp__CUSTOM_register_exit" unresolved was referenced in function "_sample_register_callbacks"
sample.dll: LNK1120 fatal error: external reference 2 is unresolved.
Solution:
1. Install X64 bit compilers in visual studio.
2. Restart your machine.
3. open TC command prompt and go to MSDEV_HOME.
4. Type this: call vcvarsall amd64
5. compile using compile.bat.
More Details: click here.