From 990aabe29415cdbc0d7fd22aa82c5e6bf31b4675 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Wed, 15 Jan 2020 14:42:32 +0100
Subject: Reintroduce version check for MSVC /TP flag

The flag is only required for old MSVC versions.
---
 CMakeLists.txt | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e9f733d..b3edd74 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -33,7 +33,10 @@ if(MSVC)
   # Force to always compile with W4
   add_compile_options($<$<COMPILE_LANGUAGE:C>:/W4>)
   add_compile_options($<$<COMPILE_LANGUAGE:C>:/wd4706>)
-  add_compile_options($<$<COMPILE_LANGUAGE:C>:/TP>)
+  # Compile as C++ under MSVC older than 12.0
+  if(MSVC_VERSION LESS 1800)
+    add_compile_options($<$<COMPILE_LANGUAGE:C>:/TP>)
+  endif()
   add_compile_options($<$<COMPILE_LANGUAGE:C>:/D_CRT_SECURE_NO_WARNINGS>)
 elseif(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES Clang)
   add_compile_options($<$<COMPILE_LANGUAGE:C>:-Wall>)
-- 
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