*) AC_MSG_ERROR(bad value ${enableval} for newlib-mb option) ;;
esac], [newlib_mb=no])dnl
+dnl Support --enable-newlib-multithread
+AC_ARG_ENABLE(newlib-multithread,
+[ --enable-newlib-multithread enable support for multiple threads],
+[case "${enableval}" in
+ yes) newlib_multithread=yes ;;
+ no) newlib_multithread=no ;;
+ *) AC_MSG_ERROR(bad value ${enableval} for newlib-multithread option) ;;
+ esac], [newlib_multithread=yes])dnl
+
dnl Support --disable-newlib-io-float
AC_ARG_ENABLE(newlib-io-float,
[ --disable-newlib-io-float disable printf/scanf family float support],