RE: How does $(error) work?

[Warlich, Christof]

Chris Cross wrote:
> Trying to understand how $(error) works. The manual says "error is
> generated whenever this function is evaluated."  With the makefile below I
> would expect to see output from line1 of the recipe but only see output
> from $(error).
> # error.mk
> .PHONY: target
> 
> target:
>       @echo recipe line 1
>       $(error debug exit recipe line 2)
> 
> $ make -f error.mk
> error.mk:5: *** debug exit recipe line 2.  Stop.

Make immediately terminates when it sees the $(error) function. And it 
evaluates functions _before_ running any reciepe.

Just replace error with warning: Then, you'll see both the evaluation of the 
$(warning) function (first!), and _then_ the execution of the reciepe.

Cheers,

Christof