Re: ecpg-related build failure with make 3.82

On Fri, Oct 28, 2011 at 1:24 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Robert Haas <robertmhaas@gmail.com> writes:
>> On my Fedora 14 box, make -j3 fails.  I think the below is the
>> relevant portion of the output.  This has a passing similarity to bug
>> 5665, but I can't for the life of me see what the problem is here.
>> parer.o depends on preproc.h, which depends on preproc.c; therefore,
>> parser.o should not be built until preproc.c has been built, but
>> that's exactly what make is doing.
>
> I tried to reproduce this on my own Fedora 14 box, and couldn't.
> I cd'd to src/interfaces/ecpg/preproc and did several repetitions of
>
>        make maintainer-clean
>        make -j
>
> and every time, make carefully waited until bison was done before
> launching the compiles of preproc.o, parser.o, and the other files
> that are declared to depend on preproc.h.

I see the same thing.  But when I do make -j3 at the toplevel, it
bombs out as described before.

> I *can* reproduce failures if I do the same thing one directory level
> up, in src/interfaces/ecpg.  But those are caused by the other sub-makes
> not waiting for include/ecpg_config.h to get built.  Fixing that is
> beyond my level of make-fu.

I can also reproduce this problem.  I think this one does not occur on
a fresh build because ecpg_config.h is created by configure and is
only removed by make maintainer-clean.  If I make maintainer-clean in
src/interfaces/ecpg, then rerun config.status, and then do make -j it
succeeds.  However, if I repeat those steps from one level further up,
in src/interfaces, then it bombs out as described in my OP.

> This is with make-3.82-3.fc14.x86_64 ...

That's the same make I'm using here.

--
Robert Haas
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