[bug#70169] [PATCH 5/7] maint: Generate 'doc/version-LANG.texi' reproducibly.

[Janneke Nieuwenhuizen]

Ludovic Courtès writes:

[cc: Timothy Samplet who created an early version of this patch]

> Janneke Nieuwenhuizen <janneke@gnu.org> skribis:
>
>> * doc/local.mk ($(srcdir)/doc/stamp-vti): Change rule into...
>> (version.texi-from-git): ...this new function.  Call it with vti,guix.texi,;
>> and for all MANUAL_LANGUAGES with $(i),po/doc/guix-manual.$(lang).po,
>> -$(lang.po).
>>
>> Change-Id: Ia8df618178066cad320eecea0299337224e23a73
>
> [...]
>
>> +i:=0
>> +$(eval $(call version.texi-from-git,vti,doc/guix.texi,))
>> +$(foreach lang, $(MANUAL_LANGUAGES),                                \
>> +    $(eval i=$(shell echo $$(($(i)+1))))                    \
>> +    $(eval $(call 
>> version.texi-from-git,$(i),po/doc/guix-manual.$(lang).po,-$(lang))))
>
> Also, not sure why but I get this:
>
> make[2]: Entering directory '/home/ludo/src/guix'
> Makefile:7389: warning: overriding recipe for target 'doc/stamp-vti'
> Makefile:5111: warning: ignoring old recipe for target 'doc/stamp-vti'
> Makefile:7390: warning: overriding recipe for target 'override'
> Makefile:7389: warning: ignoring old recipe for target 'override'
> Makefile:7390: warning: overriding recipe for target 'doc/stamp-1'
> Makefile:5176: warning: ignoring old recipe for target 'doc/stamp-1'
> […]

Yes, sadly that's expected, and couldn't figure out how to avoid this.
Any ideas would be greatly appreciated.  Automake will just create those
targets, and it seems we must override exactly those.  May Timothy has
an idea?