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AC_CANONICAL_* and automake variables


From: NightStrike
Subject: AC_CANONICAL_* and automake variables
Date: Wed, 25 Jul 2012 15:50:32 -0400

http://www.gnu.org/savannah-checkouts/gnu/automake/manual/html_node/Optional.html

This link says that the canonical macros will make
build/host/target_triplet make variables available.  What's the
difference between using for instance $target and $target_triplet?
Will they always be the same?  Why does automake create redundant
variables?



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