From f082ca12e3c1b8eb8ebe5cfe805ffa9702482774 Mon Sep 17 00:00:00 2001
From: Vas Crabb <cuavas@users.noreply.github.com>
Date: Sun, 15 Nov 2020 06:11:24 +1100
Subject: [PATCH] renderer_d3d12.h: Update __mingw_uuidof declaration for C++17
 (#2311)

---
 src/renderer_d3d12.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/renderer_d3d12.h b/src/renderer_d3d12.h
index f01fa9dbe..ea97feda6 100644
--- a/src/renderer_d3d12.h
+++ b/src/renderer_d3d12.h
@@ -20,8 +20,13 @@
 
 #if defined(__MINGW32__) // BK - temp workaround for MinGW until I nuke d3dx12 usage.
 extern "C++" {
+#if __cpp_constexpr >= 200704L && __cpp_inline_variables >= 201606L
+	__extension__ template<typename Ty>
+	constexpr const GUID& __mingw_uuidof();
+#else
 	__extension__ template<typename Ty>
 	const GUID& __mingw_uuidof();
+#endif
 
 	template<>
 	const GUID& __mingw_uuidof<ID3D12Device>()