Use the SDK_LIB_PATH macro to specify the path to the Microsoft Windows SDK libraries.
SDK_LIB_PATH should contain an asterisk (*). When the Build utility looks for libraries, it replaces the asterisk with the target platform type -- i386 for an x86-based processor, ia64 for an Itanium-based processor, or amd64 for an x64-based processor.
In the Windows Driver Kit (WDK), the default value is:
For this default value, WDKROOT is the root installation directory of the WDK. Version indicates the version of Windows that is supported by the build environment -- wxp for Windows XP, wnet for Windows Server 2003, wlh for Windows Vista, or win7 for Windows 7.
Build date: 5/3/2011