How to compile with neon acceleration?

I want to port some neon instructions to accelerate my code.
can anyone show me some examples how to use neon in VIM3?
I tried adding -mfpu=neon, but failed in platform gcc.


btw, I am using ubuntu VIM3 system.

pls show any errors, its better to use intrinsics for implementing NEON instructions, please do read upon this forum post:

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thanks for your reply.
Here is command line with g++ system provided:
g++ -std=c++11 -mcpu=cortex-a73 -mfpu=neon -c test.cpp

and error as below :
g++: error: unrecognized command line option ‘-mfpu=neon’

pls check this post:

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also see here ARM Options (Using the GNU Compiler Collection (GCC)) for all the compiler options and what you can enable in combination with what