From 138436609fbc1d4dd9f0cac8c1a5ed3e53446091 Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 16 Apr 2024 15:09:58 -0400
Subject: CUDA: Fix detection of default C++ standard level with MSVC host
 compiler

---
 Modules/CMakeCUDACompilerId.cu.in | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/Modules/CMakeCUDACompilerId.cu.in b/Modules/CMakeCUDACompilerId.cu.in
index be8f1b3..cecb948 100644
--- a/Modules/CMakeCUDACompilerId.cu.in
+++ b/Modules/CMakeCUDACompilerId.cu.in
@@ -22,7 +22,15 @@ char const* info_simulate = "INFO" ":" "simulate[" SIMULATE_ID "]";
 #define CXX_STD_20 202002L
 #define CXX_STD_23 202302L
 
-#define CXX_STD __cplusplus
+#if defined(_MSC_VER) && defined(_MSVC_LANG)
+#  if _MSVC_LANG > __cplusplus
+#    define CXX_STD _MSVC_LANG
+#  else
+#    define CXX_STD __cplusplus
+#  endif
+#else
+#  define CXX_STD __cplusplus
+#endif
 
 const char* info_language_standard_default = "INFO" ":" "standard_default["
 #if CXX_STD > CXX_STD_23
-- 
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