bug#9106: 24.0.50; ./configure causes massive recompilation

[Jim Meyering <jim@meyering.net>]

Bruno Haible wrote:
> Paul, Jim, Eric, others, do you remember other problems of stamp files?
>
>> The config.h rule (among others) has been using one for years,
>> and the last time I've heard complaints or bug reports about it
>> has been years also.
>
> For reference, here's the rules automake generates for config.h:
>
> config.h: stamp-h1
>         @if test ! -f $@; then \
>           rm -f stamp-h1; \
>           $(MAKE) $(AM_MAKEFLAGS) stamp-h1; \
>         else :; fi
>
> stamp-h1: $(srcdir)/config.h.in $(top_builddir)/config.status
>         @rm -f stamp-h1
>         cd $(top_builddir) && $(SHELL) ./config.status config.h
>
> $(srcdir)/config.h.in:  $(am__configure_deps)
>         ($(am__cd) $(top_srcdir) && $(AUTOHEADER))
>         rm -f stamp-h1
>         touch $@
>
> distclean-hdr:
>         -rm -f config.h stamp-h1
>
> Is that the kind of rule you would recommend?

Hi Bruno,

I know of no problem with that time stamp mechanism.
It's been in use (complaint-free) for a very long time.