I have been reading about NEON and compilation at times throughout the last six months or so…
I have been reading this short on it: linux/kernel_mode_neon.rst at master · beagleboard/linux · GitHub
Oh and it seems that there are some specific flags to use w/ arm_neon.h and other specifics w/ rules when building source w/ NEON involved.
I found that idea in case others are interested. If someone is building around the NEON subset, please add some source or ideas here.