AC_CHECK_LIB(ncurses, main, [ncurses=true], [ncurses=false])
AC_CHECK_LIB(g2, main, [g2=true], [g2=false])
AC_CHECK_LIB(readline, main, [readline=true; AC_DEFINE(HAVE_READLINE)], [readline=false])
AC_CHECK_LIB(ncurses, main, [ncurses=true], [ncurses=false])
AC_CHECK_LIB(g2, main, [g2=true], [g2=false])
AC_CHECK_LIB(readline, main, [readline=true; AC_DEFINE(HAVE_READLINE)], [readline=false])