From 1a7b9ce00679c9ec9625db1c0d0d4705442e2e19 Mon Sep 17 00:00:00 2001
From: Campbell Barton <ideasman42@gmail.com>
Date: Thu, 25 Feb 2016 07:31:44 +1100
Subject: CMake: check for minimum MSVC version

Needed since older versions are unsupported (giving cryptic errors).
---
 CMakeLists.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 28c962e0d55..5efd57c32d3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1242,6 +1242,14 @@ elseif(WIN32)
 	add_definitions(-DWIN32)
 
 	if(MSVC)
+		# Minimum MSVC Version
+		set(_min_ver "18.0.31101")
+		if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${_min_ver})
+			message(FATAL_ERROR
+			        "Visual Studio 2013 (Update 4, ${_min_ver}) required, "
+			        "found (${CMAKE_CXX_COMPILER_VERSION})")
+		endif()
+		unset(_min_ver)
 
 		# needed for some MSVC installations
 		set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /SAFESEH:NO")
-- 
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