From 863f7eb6d7237b47a4347a2c517fd435a0edd44f Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 31 Jul 2019 12:45:53 -0400
Subject: clang: Restore support for clang-cl on non-Windows hosts

The frontend variant detection logic added by commit 53fbe23f3f (clang:
introduce CMAKE_<lang>_COMPILER_FRONTEND_VARIANT, 2019-02-20,
v3.15.0-rc1~41^2~8) assumes that `clang-cl` only runs on a Windows host.
It is also available on non-Windows hosts.  Fix the condition.

Fixes: #19544
---
 Modules/CMakeDetermineCompilerId.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/CMakeDetermineCompilerId.cmake b/Modules/CMakeDetermineCompilerId.cmake
index 6083358..02bc14b 100644
--- a/Modules/CMakeDetermineCompilerId.cmake
+++ b/Modules/CMakeDetermineCompilerId.cmake
@@ -138,7 +138,7 @@ function(CMAKE_DETERMINE_COMPILER_ID lang flagvar src)
 
   set(_variant "")
   if("x${CMAKE_${lang}_COMPILER_ID}" STREQUAL "xClang")
-    if(CMAKE_HOST_WIN32 AND "x${CMAKE_${lang}_SIMULATE_ID}" STREQUAL "xMSVC")
+    if("x${CMAKE_${lang}_SIMULATE_ID}" STREQUAL "xMSVC")
       if(CMAKE_GENERATOR MATCHES "Visual Studio")
         set(CMAKE_${lang}_COMPILER_FRONTEND_VARIANT "MSVC")
       else()
-- 
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