Favor linking against curses instead of ncursesw

configure.ac

@@ -9,16 +9,13 @@ AC_TYPE_SSIZE_T
 AC_FUNC_MALLOC
 AC_FUNC_REALLOC
 AC_CHECK_FUNCS([memmove pledge reallocarray setlocale strdup])
-AC_SEARCH_LIBS([initscr], [ncursesw ncurses], [], [
-  AC_MSG_ERROR([unable to find initscr() function. Try to install ncurses])
-])
-
-AC_TRY_LINK([
-	#include <ncursesw/curses.h>
-	#include <ncursesw/term.h>
-], [], [
-AC_DEFINE(HAVE_NCURSESW_H,, Define if ncursesw is available)
-])
-
+AC_SEARCH_LIBS([setupterm], [curses], [],
+  [
+    AC_SEARCH_LIBS([setupterm], [ncursesw],
+      [AC_DEFINE([HAVE_NCURSESW_H], [1], [Define if ncursesw is available])],
+      [AC_MSG_ERROR([unable to find setupterm function])]
+    )
+  ]
+)
 AC_CONFIG_FILES([Makefile])
 AC_OUTPUT