commit a09682f00d8e50ada3c7ed16f8c48fa71a423f60
author Alex Stewart <alexs.mac@gmail.com> Sun May 24 16:49:28 2020 +0100
committer Sameer Agarwal <sameeragarwal@google.com> Mon May 25 17:17:42 2020 +0000
tree 4f1623179c9e1dc10c76fe1ada9da4df853a1d94
parent b70687fcc86624c7d5520d25734938fa95d2af73

Fix MSVC version check to support use of clang-cl front-end

- Raised as issue: #521

Change-Id: Iaea6b43484b90ec8789bda0447c8a90759974ec1

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 76e08d0..2a6b376 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -57,7 +57,8 @@
 mark_as_advanced(CMAKE_CXX_STANDARD_REQUIRED)
 
 # MSVC versions < 2013 did not fully support >= C++11.
-if (MSVC AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12.0)
+if (CMAKE_CXX_COMPILER_ID MATCHES MSVC AND
+    CMAKE_CXX_COMPILER_VERSION VERSION_LESS 12.0)
   message(FATAL_ERROR "Invalid CMAKE_CXX_COMPILER_VERSION: "
     "${CMAKE_CXX_COMPILER_VERSION}. Ceres requires at least MSVC 2013 Update 4+")
 endif()