+if [ ".$PERL" = . ] ; then
+ for i in . `echo $PATH | sed 's/:/ /g'`; do
+ if [ -f "$i/perl5" ] ; then
+ PERL="$i/perl5"
+ break;
+ fi;
+ done
+fi
+
+if [ ".$PERL" = . ] ; then
+ for i in . `echo $PATH | sed 's/:/ /g'`; do
+ if [ -f "$i/perl" ] ; then
+ PERL="$i/perl"
+ break;
+ fi;
+ done
+fi
+
+if $PERL -e 'exit($]>=5.0);' ; then
+ echo "You need Perl 5."
+ exit 1
+fi
+