#### Failed To Build Some Targets (1 Seconds) ####

I am building unofficial AOSP rom for my device(OnePlus One) I followed the steps in to initialise I have used the following commands source build/envsetup.sh lunch aosp_arm64-eng

Solution 1:

Your lunch (2nd) command is wrong, it should be

lunch aosp_bacon-eng

Assuming you have cloned your device sources and made required changes