error: yacc.h: No such file or directory

[Enji Cooper]

> On Jun 18, 2019, at 06:53, Ian Lepore <ian at freebsd.org> wrote:

...

> Last Saturday, Bryan (cc'd) made a series of commits (r349061-69) that
> were all somehow related to dependency processing in the build.  I
> don't know the details, just remember seeing some commits about that.

I remember that as well. This might have changed the dependency order subtly, introducing a race.

The headers might not be built in all cases in time now.

Thanks,
-Enji

PS This is one of the reasons why I wasn’t quick to discount Peter Jeremy’s reported build issue.