On 12 Apr 2023 18:14, Reuben Thomas via Bug reports for Automake wrote:
> On Wed, 12 Apr 2023 at 17:59, Reuben Thomas <rrt@sc3d.org> wrote:
> > On Wed, 12 Apr 2023 at 16:17, Reuben Thomas <rrt@sc3d.org> wrote:
> >
> >> I am bootstrapping GNU a2ps git master[1] with automake 1.16.5. When I do
> >> a parallel build (in my case, MAKEFLAGS=-j4), I get build failures
> >> sometimes:
> >
> > In fact, I don't need to do a parallel build, just build serially from a
> > fresh git checkout, to reproduce this problem. It seems that I must be
> > doing something wrong, but I can't work out what!
> 
> I think I've worked it out: I need to add the .c file that is generated
> from the .y file, not the .h file, to BUILT_SOURCES. Certainly, doing that
> fixes the problem.

we prob could add a .y/.l example to the manual.  i think i tripped over this
error myself in a project in the past.  i think you want to list both files.
-mike