Your bug report

#13477: automake 1.13 breaks when TESTS variable contains GNU make macros like $(sort ...)

which was filed against the automake package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 13477@debbugs.gnu.org.

-- 
13477: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=13477
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