[OE-core] [PATCH v2] libc6: improve reproducibility

[Bystricky, Juro]

> >
> > plural.c: plural.y
> >         $(BISON) $(BISONFLAGS) $@ $^
> >
> > If the above rule does not fire, we use a "fallback" plural.c, otherwise
> > we use plural.c re-generated from plural.y.
> > The fix is to always require bison to be installed and unconditionally
> > re-generate plural.c. (This is achieved by touching plural.y).
> >
> > [YOCTO #12291]
> 
> 2.27 will be there for next release. So I wonder if we should just wait.

AFAIK 2.27 will always generate plural.c (plural.c will not be part of the distro at all). So "touching" plural.y is not needed. But we still need to add bison-native to DEPENDS

DEPENDS += "gperf-native bison-native"