RPI2, www/firefox, error: "NEON support not enabled"

[bob prohaska]

On Fri, May 05, 2017 at 12:38:14PM -0700, Mark Millard wrote:
> 
> An rpi2 has Cortex-A7 (armv7-A) cores that have NEON
> but armv6 does not.
> 
> There is some possibility that with something like
> -mcpu=cortex-a7 in use as a compiler option that
> NEON would be used.

What's the simplest way to try it on a self-hosted RPI2 running
-current? At this point I'm just using make -DBATCH in
/usr/ports/www/firefox and following my nose.  There's nothing 
valuable on the system, it's only for testing.

> 
> https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=217611
> 
> (VFP and NEON are related by the registers used.)
> 
> So there could be other problems with NEON enabled code
> until it is all resolved. (And head gets the work before
> stable/11 gets the result.)
> 

Most of the discussion in the thread is beyond me, but it
is appreciated that the problem isn't simple.

Thanks for writing!

bob prohaska