$NetBSD: patch-Utilities_std_cm_string__view,v 1.1 2019/11/27 22:32:27 adam Exp $

<string_view> is not (yet) portable.

--- Utilities/std/cm/string_view.orig	2019-11-26 14:18:07.000000000 +0000
+++ Utilities/std/cm/string_view
@@ -6,9 +6,6 @@
 #ifndef cm_string_view
 #define cm_string_view
 
-#if __cplusplus >= 201703L || defined(_MSVC_LANG) && _MSVC_LANG >= 201703L
-#  define CMake_HAVE_CXX_STRING_VIEW
-#endif
 
 #ifdef CMake_HAVE_CXX_STRING_VIEW
 #  include <string_view> // IWYU pragma: export
