From: Filipe Cabecinhas <me@filcab.net>
Date: Wed, 18 Feb 2015 01:12:38 +0000 (+0000)
Subject: Downgrade build system error message to a warning
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c500f1360643dfb2c41c84b2e272d18da8a2268a;p=oota-llvm.git

Downgrade build system error message to a warning

Instead of requiring MSVC 2013 U4, we simply warn users, since some might
not bt able to immediately upgrade.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@229598 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/cmake/modules/HandleLLVMOptions.cmake b/cmake/modules/HandleLLVMOptions.cmake
index 24af2f81ceb..ba6114a4f56 100644
--- a/cmake/modules/HandleLLVMOptions.cmake
+++ b/cmake/modules/HandleLLVMOptions.cmake
@@ -41,8 +41,11 @@ int main() { return (float)x; }"
       set(CMAKE_REQUIRED_LIBRARIES ${OLD_CMAKE_REQUIRED_LIBRARIES})
     endif()
   elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
-    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18.0.31101)
-      message(FATAL_ERROR "Host Visual Studio must be at least 2013 Update 4 (MSVC 18.0.31101)")
+    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18.0)
+      message(FATAL_ERROR "Host Visual Studio must be at least 2013")
+    elseif(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 18.0.31101)
+      message(WARNING "Host Visual Studio should at least be 2013 Update 4 (MSVC 18.0.31101)"
+        "  due to miscompiles from earlier versions")
     endif()
   endif()
 endif()