When you do a clean check out of both the windows libraries and blender source and then use cmake with Visual Studio 2008 to do a 64bit build it fails with the message

LINK: fatal error LNK1181: cannot open input file 'buffer.lib'

Comparing the 32bit and 64 bit libraries leads me to believe that buffer.lib and ftoa.lib are missing from the 64 bit library repository - along with the debug versions.

To reproduce this problem execute the following commands in an empty directory

svn co https://svn.blender.org/svnroot/bf-blender/trunk/lib/win64 lib/win64
svn checkout https://svn.blender.org/svnroot/bf-blender/trunk/blender
mkdir build64
cd build64
cmake -G "Visual Studio 9 2008 Win64" ..\blender
cmake --build . --clean-first --config Release