I was able to build on rpi b3 (board 2710 ) some months ago... and I didn't
encounter this . Can I see the  steps you followed?

Regards, Janus

On Wed, Aug 29, 2018, 5:05 AM Francis Booth <boothf@boothlabs.me> wrote:

> Attempting to build Wireguard on a Raspberry Pi will result in an assembly
> error
>
>     Error: immediate expression requires a # prefix -- `moveq r5,1'
>
> (the full build error log can be found here: https://pastebin.com/CKTXwGyG
> )
>
> Appending # to the values and telling ARM to treat them as literals solves
> the issue.
>
> I was able to test this patch out on my own Raspberry Pi 3B+ and can
> confirm the resulting build is successfully able to build, create the wg0
> interface, generate a private key, connect to a peer, and send encrypted
> messages back and forth.
>
> justw and revel assisted in providing the fix via the Wireguard irc
> channel.
>
>
> curve25519: arm: Compile on Raspi
>
> diff --git a/src/crypto/curve25519-arm.S b/src/crypto/curve25519-arm.S
> index cb40c24..f9d50e9 100644
> --- a/src/crypto/curve25519-arm.S
> +++ b/src/crypto/curve25519-arm.S
> @@ -1554,35 +1554,35 @@ ENTRY(curve25519_neon)
>  	movw		r4, 0
>  	movw		r5, 2
>  	cmp		r1, #1
> -	moveq		r5, 1
> +	moveq		r5, #1
>  	addeq		r2, r3, #336
>  	addeq		r4, r3, #48
>  	cmp		r1, #2
> -	moveq		r5, 1
> +	moveq		r5, #1
>  	addeq		r2, r3, #48
>  	cmp		r1, #3
> -	moveq		r5, 5
> +	moveq		r5, #5
>  	addeq		r4, r3, #336
>  	cmp		r1, #4
> -	moveq		r5, 10
> +	moveq		r5, #10
>  	cmp		r1, #5
> -	moveq		r5, 20
> +	moveq		r5, #20
>  	cmp		r1, #6
> -	moveq		r5, 10
> +	moveq		r5, #10
>  	addeq		r2, r3, #336
>  	addeq		r4, r3, #336
>  	cmp		r1, #7
> -	moveq		r5, 50
> +	moveq		r5, #50
>  	cmp		r1, #8
> -	moveq		r5, 100
> +	moveq		r5, #100
>  	cmp		r1, #9
> -	moveq		r5, 50
> +	moveq		r5, #50
>  	addeq		r2, r3, #336
>  	cmp		r1, #10
> -	moveq		r5, 5
> +	moveq		r5, #5
>  	addeq		r2, r3, #48
>  	cmp		r1, #11
> -	moveq		r5, 0
> +	moveq		r5, #0
>  	addeq		r2, r3, #96
>  	add		r6, r3, #144
>  	add		r7, r3, #288
>
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