exo/meso: update for gcc 11 compatibility

libraries/libvapours/include/vapours/util/util_enum.hpp

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2018-2020 Atmosphère-NX
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#include <vapours/common.hpp>
+#include <vapours/assert.hpp>
+
+namespace ams::util {
+
+    template<typename Enum> requires std::is_enum<Enum>::value
+    constexpr ALWAYS_INLINE typename std::underlying_type<Enum>::type ToUnderlying(Enum e) {
+        return static_cast<typename std::underlying_type<Enum>::type>(e);
+    }
+
+    template<typename Enum> requires std::is_enum<Enum>::value
+    constexpr ALWAYS_INLINE Enum FromUnderlying(typename std::underlying_type<Enum>::type v) {
+        return static_cast<Enum>(v);
+    }
+
+}