diff --git a/tools/sil-func-extractor/SILFunctionExtractor.cpp b/tools/sil-func-extractor/SILFunctionExtractor.cpp
index be96d55123a3a..57d6ffd5d4f5d 100644
--- a/tools/sil-func-extractor/SILFunctionExtractor.cpp
+++ b/tools/sil-func-extractor/SILFunctionExtractor.cpp
@@ -116,6 +116,11 @@ static llvm::cl::opt<bool> EnableOSSAModules(
                    "this is disabled we do not serialize in OSSA "
                    "form when optimizing."));
 
+static llvm::cl::opt<llvm::cl::boolOrDefault> EnableObjCInterop(
+    "enable-objc-interop",
+    llvm::cl::desc("Whether the Objective-C interop should be enabled. "
+                   "The value is `true` by default on Darwin platforms."));
+
 // This function isn't referenced outside its translation unit, but it
 // can't use the "static" keyword because its address is used for
 // getMainExecutable (since some platforms don't support taking the
@@ -250,6 +255,14 @@ int main(int argc, char **argv) {
   Invocation.getLangOptions().EnableAccessControl = false;
   Invocation.getLangOptions().EnableObjCAttrRequiresFoundation = false;
 
+  if (EnableObjCInterop == llvm::cl::BOU_UNSET) {
+    Invocation.getLangOptions().EnableObjCInterop =
+        Invocation.getLangOptions().Target.isOSDarwin();
+  } else {
+    Invocation.getLangOptions().EnableObjCInterop =
+        EnableObjCInterop == llvm::cl::BOU_TRUE;
+  }
+
   SILOptions &Opts = Invocation.getSILOptions();
   Opts.EmitVerboseSIL = EmitVerboseSIL;
   Opts.EmitSortedSIL = EmitSortedSIL;