diff --git a/lld/MachO/Driver.cpp b/lld/MachO/Driver.cpp
--- a/lld/MachO/Driver.cpp
+++ b/lld/MachO/Driver.cpp
@@ -141,10 +141,13 @@
   return {};
 }
 
-static bool warnIfNotDirectory(StringRef option, StringRef path) {
+static bool warnIfNotDirectory(StringRef option, StringRef path,
+                               InputArgList &args) {
   if (!fs::exists(path)) {
-    warn("directory not found for option -" + option + path);
-    return false;
+    if (args.hasArg(OPT_Z) || path != "/usr/local/lib") {
+      warn("directory not found for option -" + option + path);
+      return false;
+    }
   } else if (!fs::is_directory(path)) {
     warn("option -" + option + path + " references a non-directory path");
     return false;
@@ -172,7 +175,7 @@
         }
       }
     }
-    if (!found && warnIfNotDirectory(optionLetter, path))
+    if (!found && warnIfNotDirectory(optionLetter, path, args))
       paths.push_back(path);
   }