fatal error: 'invtrig.h' file not found on RPI2

[bob prohaska]

On Thu, Feb 16, 2017 at 10:34:27PM +0100, Andreas Tobler wrote:
> On 16.02.17 18:01, bob prohaska wrote:
> > For the last  day I've been seeing
> >
> > --- lib/msun__L ---
> > /usr/src/lib/msun/src/catrigl.c:48:10: fatal error: 'invtrig.h' file not found
> > #include "invtrig.h"
> >
> > This is on
> >
> > FreeBSD www.zefox.com 12.0-CURRENT FreeBSD 12.0-CURRENT #5 r313709: Mon Feb 13 15:11:04 PST 2017     bob at www.zefox.com:/usr/obj/usr/src/sys/RPI2  arm
> >
> > Am I doing something wrong? Attempts to update simply report
> > root at www:/usr/src # svnlite up .
> > Updating '.':
> > At revision 313810.
> 
> Just revert r313761 in head/lib/msun, it affects also mips and powerpc.
> 

Hmm, didn't seem to help, same error. Actually, it doesn't matter, this is
just a test machine. 

How can I tell  when it's useful to try again?

Thanks!

bob