On 2016-01-04 15:59:46 +0100, Christoph Berg wrote:
> The list of objects used to link pg_xlogdump is coming from
> $(wildcard *desc.c) which returns them in filesystem order. This makes
> the build result depend on this ordering, yielding different
> compilation results.

> -RMGRDESCSOURCES = $(notdir $(wildcard 
> $(top_srcdir)/src/backend/access/rmgrdesc/*desc.c))
> +RMGRDESCSOURCES = $(sort $(notdir $(wildcard 
> $(top_srcdir)/src/backend/access/rmgrdesc/*desc.c)))
>  RMGRDESCOBJS = $(patsubst %.c,%.o,$(RMGRDESCSOURCES))

That's probably not the only non-deterministic rule in postgres, given
nobody paid attention tot that so far? At least transform modules added
in 9.5 (hstore_plpython et al) look like they might similar issues.

Wonder if we should instead define a wildcard wrapper in
Makefile.global.in that does the sorting, including an explanation?


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