1 files changed, 6 insertions, 0 deletions
diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 420573dea2..0c2db8a87c 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -526,6 +526,12 @@ bool Darwin::IsUnwindTablesDefault() const {
   return getArchName() == "x86_64";
 }
 
+bool Darwin::UseDwarfDebugFlags() const {
+  if (const char *S = ::getenv("RC_DEBUG_OPTIONS"))
+    return S[0] != '\0';
+  return false;
+}
+
 const char *Darwin::GetDefaultRelocationModel() const {
   return "pic";
 }