+AC_ARG_ENABLE(nonascii, [ --disable-nonascii Disable usage of non-ascii characters ], [case "${enableval}" in
+ yes) nonascii=true ;;
+ no) nonascii=false ;;
+ *) AC_MSG_ERROR(bad value ${enableval} for --disable-nonascii) ;;
+ esac], [nonascii=true])
+
+if test x$nonascii = xfalse; then
+ AC_DEFINE(USE_ASCII_ONLY)
+fi
+
+if test x$debug = xtrue; then
+ CPPFLAGS="-DDEBUG $CPPFLAGS"
+ CFLAGS="-g $CFLAGS"
+fi