--- /dev/null
+--- a/bc/fix-libmath_h
++++ b/bc/fix-libmath_h
+@@ -1,9 +1,9 @@
+-ed libmath.h <<EOS-EOS
+-1,1s/^/{"/
+-1,\$s/\$/",/
+-2,\$s/^/"/
+-\$,\$d
+-\$,\$s/,\$/,0}/
+-w
+-q
+-EOS-EOS
++#! /bin/bash
++sed -e '1 s/^/{"/' \
++ -e 's/$/",/' \
++ -e '2,$ s/^/"/' \
++ -e '$ d' \
++ -i libmath.h
++
++sed -e '$ s/$/0}/' \
++ -i libmath.h
+--- a/configure
++++ b/configure
+@@ -5288,7 +5288,7 @@ case $bcle-$bcrl-$LEX in
+ ?-?-flex)
+ LEX="flex -I -8" ;;
+ ?-y-*)
+- as_fn_error $? "readline works only with flex." "$LINENO" 5 ;;
++ : ;; # as_fn_error $? "readline works only with flex." "$LINENO" 5 ;;
+ esac
+
+ case $LEX-`uname -s` in