refering to order-only prerequisite

[Warlich, Christof]

Hi,

please consider the following example Makefile:

all: | some_order_only_prerequisite
        echo $<

some_order_only_prerequisite:
        touch $@

I would have expected that running make would always print 
"some_order_only_prerequisite", but obviously, $< does not refer to the first 
dependency if it is order-only.

Is this intended behavior, and if so, why?

Regards,

Chris