Re: Assigning $@ to target-specific variable

[Dave Hylands]

Hi Ryan,

Whoops - replying to the list as well.

> I've just started using GNU make (3.80), and I'm confused why the
> following doesn't work:
>
> $(TARGETS): target := $@
>
> The target variable remains empty.

The $@ variable only makes sense from within a recipie.  So

SomeTarget : SomePreReq
   echo $@

will echo SomeTarget

Because you used immediate evaluation, and it wasn't being evaluated
from within  recipie, $@ is empty.

If you used this instead:

$(TARGETS): target = $@

then you'd be using deferred evaluation and (assuming that $(TARGETS)
contains SomeTarget)

SomeTarget : SomePreReq
   echo $(target)

would work.

--
Dave Hylands
Vancouver, BC, Canada
http://www.DaveHylands.com/