Fix error in clang /MT equivalent flag patch.

This is a followup to reviews.llvm.org/D133457.

diff --git a/clang/lib/Driver/ToolChains/Clang.cpp b/clang/lib/Driver/ToolChains/Clang.cpp
index 9737a0e..e215dc0 100644 (file)
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -6543,7 +6543,8 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA,
   if (IsMSVCCompat)
     CmdArgs.push_back("-fms-compatibility");
 
-  if (Triple.isWindowsMSVCEnvironment() && !D.IsCLMode())
+  if (Triple.isWindowsMSVCEnvironment() && !D.IsCLMode() &&
+      Args.hasArg(options::OPT_fms_runtime_lib_EQ))
     ProcessVSRuntimeLibrary(Args, CmdArgs);
 
   // Handle -fgcc-version, if present.