GNU make tests - transitive closure

[xTigr]

What should happen for the following call?


tclose = $(if $1,$(firstword $1) \
                $(call tclose,$(sort ${DEP_$(firstword $1)} $(call
rest,$1))))

all : 
     @echo $(call tclose, foo)



If I run this in a separate makefile - GNU make gives
an error about recursive variable referencing itself.
WHen I run this makefile from perl script - it
passes!!! 


                
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