On Tue, 21 Nov 2017, Aldy Hernandez wrote:
> I have no idea how to bootstrap with clang :).  Perhaps someone can 
> throw a hint.

It just works.  Usually. :-)

I run two testers, one nightly, one weekly, on a FreeBSD.org cluster,
one with clang 3.4 the other with clang 4.0 right now, and while both
issue tons of warnings -- what you shared looks pretty familiar -- apart 
from the breakage I now reported it just works.

No magic flags or anything.  In fact, at one point one machine was 
upgraded from a GCC 4.x system compiler to clang 3.4 and things just 
kept working.

> ...with numerous problems building stage1, among which are:

You can safely ignore those.  Just make sure there's no -Werror or 
similar in your environment.

Gerald

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