NCURSES_VERSION_MAJOR   97 lib/tty/tty-ncurses.c #if (NCURSES_VERSION_MAJOR >= 4) && defined (SIGWINCH)
NCURSES_VERSION_MAJOR  318 lib/tty/tty-ncurses.c #if defined(TIOCGWINSZ) && NCURSES_VERSION_MAJOR >= 4