We’re trying to build the QNX BSP, which we have downloaded from QNX® Software Development Platform 7.1, and we followed the BSP build document but getting errors such as
please let me know how can I resolve this issue
The error suggest one of two things, either you failed to install 7.1 properly or QNX screwed up. Assuming that you have a contract to develop using 7.1 you should be able to create a ticket on this issue.