diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp
index 9e7a061..8436561 100644
--- a/lib/Driver/Tools.cpp
+++ b/lib/Driver/Tools.cpp
@@ -1215,6 +1215,11 @@
                    getToolChain().getTriple().getOS() == llvm::Triple::Win32))
     CmdArgs.push_back("-fms-extensions");
 
+  // -fborland-extensions=0 is default.
+  if (Args.hasFlag(options::OPT_fborland_extensions,
+                   options::OPT_fno_borland_extensions, false))
+    CmdArgs.push_back("-fborland-extensions");
+
   // -fgnu-keywords default varies depending on language; only pass if
   // specified.
   if (Arg *A = Args.getLastArg(options::OPT_fgnu_keywords,