Index: ELF/Config.h
===================================================================
--- ELF/Config.h
+++ ELF/Config.h
@@ -105,7 +105,6 @@
   bool VersionScriptGlobalByDefault = true;
   bool WarnCommon;
   bool ZCombreloc;
-  bool ZDefs;
   bool ZExecStack;
   bool ZNodelete;
   bool ZNow;
Index: ELF/Driver.cpp
===================================================================
--- ELF/Driver.cpp
+++ ELF/Driver.cpp
@@ -364,7 +364,7 @@
     error("number of threads must be > 0");
 
   Config->ZCombreloc = !hasZOption(Args, "nocombreloc");
-  Config->ZDefs = hasZOption(Args, "defs");
+  Config->NoUndefined |= hasZOption(Args, "defs");
   Config->ZExecStack = hasZOption(Args, "execstack");
   Config->ZNodelete = hasZOption(Args, "nodelete");
   Config->ZNow = hasZOption(Args, "now");
Index: ELF/Writer.cpp
===================================================================
--- ELF/Writer.cpp
+++ ELF/Writer.cpp
@@ -277,9 +277,8 @@
   if (!Config->NoUndefined) {
     if (Config->Relocatable)
       return;
-    if (Config->Shared && !Config->ZDefs)
-      if (Sym->symbol()->Visibility == STV_DEFAULT)
-        return;
+    if (Config->Shared && Sym->symbol()->Visibility == STV_DEFAULT)
+      return;
   }
 
   std::string Msg = "undefined symbol: " + Sym->getName().str();