-AC_CACHE_CHECK(for ncurses extended functions,cf_cv_ncurses_ext_funcs,[
-AC_TRY_LINK([
-#include <${cf_cv_ncurses_header-curses.h}>],
-[
- (void) assume_default_colors (0, 0);
- (void) curses_version ();
- (void) define_key (0, 0);
- (void) is_term_resized (0, 0);
- (void) key_defined (0);
- (void) keybound (0, 0);
- (void) keyok (0, 0);
- (void) resize_term (0, 0);
- (void) resizeterm (0, 0);
- (void) use_default_colors ();
- (void) use_extended_names (0);
- (void) wresize (0, 0, 0);],
- [cf_cv_ncurses_ext_funcs=yes],
- [cf_cv_ncurses_ext_funcs=no])
-])
-test "$cf_cv_ncurses_ext_funcs" != no && AC_DEFINE(NCURSES_EXT_FUNCS)