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GNU make tests - transitive closure

From: xTigr
Subject: GNU make tests - transitive closure
Date: Fri, 8 Apr 2005 10:58:13 -0700 (PDT)

What should happen for the following call?

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

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

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