+echo $ac_n "checking whether tsort can deal with loops""... $ac_c" 1>&6
+echo "configure:1590: checking whether tsort can deal with loops" >&5
+if eval "test \"`echo '$''{'nmh_cv_tsort_loop'+set}'`\" = set"; then
+ echo $ac_n "(cached) $ac_c" 1>&6
+else
+ if test -z "`echo a b b a | tsort 2>/dev/null | grep a`" ; then
+ nmh_cv_tsort_loop=no
+ else
+ nmh_cv_tsort_loop=yes
+ fi
+fi
+
+echo "$ac_t""$nmh_cv_tsort_loop" 1>&6
+if test x$nmh_cv_tsort_loop = xno ; then
+ TSORT=cat
+ fi
+