Re: Unexpected failure in tricky use of eval

[Paul Smith]

On Mon, 2012-05-14 at 00:14 +0200, Stefano Lattarini wrote:

> >>     LAZYVAR = $(override LAZYVAR := val)$(LAZY)
> > 
> > I don't have any idea what this is supposed to do... it doesn't make any
> > sense as written.
> >
> In fact, it should have been s/$(LAZY)/$(LAZYVAR)/.  Sorry for the confusion.

It still doesn't make sense to me.  There is no function "override"...?

Did you mean $(eval override LAZYVAR := val) maybe?

> > Can you describe in words what you're looking for?
> > 
> Basically, a new kind of assignment that do not expand the right-hand side
> at definition time, but which causes the value the variable expands to the
> first time it gets dereferenced to be cached, and reused in any successive
> expansion of that same variable.

I see.  I know of other variants of make that have this type of
assignment.