Hello Tingan Ho,
Since the LTIB BSP has been around for a while some files are no longer located in their original place. Please check the following threads which describe the same issue and contain some workarounds.
Can't get: gcc-4.6.2-glibc-2.13-linaro-multilib-2011.12-1.i386.rpm at ./ltib line 2560.
http://bitshrine.org/gpp not available
I hope this helps!