AC_CHECK_HEADER
(
  [ncurses.h],
  [
    AC_SEARCH_LIBS
    ([initscr], [ncurses],
    [
      AC_DEFINE(HAVE_NCURSES_H)
      AC_SEARCH_LIBS([tputs], [tinfo])
    ],[
      AC_SEARCH_LIBS
      (
        [initscr], [curses],
          [
            AC_DEFINE(HAVE_CURSES_H)
            AC_SEARCH_LIBS([tputs], [tinfo])
          ],[
            AC_MSG_ERROR([bvi requires a curses library])
          ]
        )
    ]
    )
  ],[
    AC_CHECK_HEADER
    (
      [curses.h],
        [
          AC_SEARCH_LIBS
          (
            [initscr], [curses],
            [
              AC_DEFINE(HAVE_CURSES_H)
            ],[
              AC_MSG_ERROR([bvi requires a curses library])
            ]
          )
        ],[
  # statt:		AC_MSG_ERROR([bvi requires a curses library])
        AC_CHECK_HEADER
        (
          [ncursesw/curses.h],
          [
            AC_SEARCH_LIBS
            (
              [initscr], [curses],
                [
                  AC_DEFINE(HAVE_NCURSESW_CURSES_H)
                ],[
                  AC_MSG_ERROR([bvi requires a curses library])
                ]
            )
          ],[
            AC_MSG_ERROR([bvi requires a curses library])
          ]
        )
      ]
    )
  ]
)