Use AS_HELP_STRING in AC_ARG_WITH for --enable-debugging to ensure
correct formatting in 'configure --help' output.
AC_CHECK_TOOL(WINDRES, windres, windres)
AC_ARG_ENABLE(debugging,
-[ --enable-debugging Build a cygwin DLL which has more consistency checking for debugging],
+[AS_HELP_STRING([--enable-debugging],[Build a cygwin DLL which has more consistency checking for debugging])],
[case "${enableval}" in
yes) AC_DEFINE([DEBUGGING],[1],[Define if DEBUGGING support is requested.]) ;;
no) ;;