* Behdad Esfahbod wrote on Tue, Oct 07, 2008 at 11:10:20PM CEST:
> Ralf Wildenhues wrote:
> > * Behdad Esfahbod wrote on Tue, Oct 07, 2008 at 10:56:02PM CEST:
> >> Right. So why is:
> >>
> >> AMTAR = TAR_OPTIONS="$(TAR_OPTIONS)" ${SHELL}
> >> /home/behdad/src/git/fd.o/cairo/build/missing --run tar
> >>
> >> not backward-compatible then?
> >
> > Because it breaks an external script that calls
> > TAR_OPTIONS=foobar make dist
>
> That's what I understood. But if make imports env vars as make vars, doesn't
> the $(TAR_OPTIONS) in the proposed AMTAR definition pick up the user's set
> TAR_OPTIONS env var and things continue to work?
Only if you pass '-e' to make, does it import environment variables as
make macros. It is not always desirable to do so.
Cheers,
Ralf
