=== configuring in misc/enigma (/home/IriX64/source/brlcad/misc/enigma)
configure: running /bin/sh ./configure '--prefix=/usr/brlcad'  '--disable-shared
' '--enable-symbols' --cache-file=../../config.cache.cygwin.FthrNtr --srcdir=.
configure: loading cache ../../config.cache.cygwin.FthrNtr
configure: error: cannot run /bin/sh ./config.sub
configure: error: ./configure failed for misc/enigma