1 files changed, 4 insertions, 0 deletions
diff --git a/src/google/protobuf/testing/googletest.cc b/src/google/protobuf/testing/googletest.cc
index d72fa5c0..5f6a199a 100644
--- a/src/google/protobuf/testing/googletest.cc
+++ b/src/google/protobuf/testing/googletest.cc
@@ -65,6 +65,7 @@ namespace protobuf {
 #endif
 
 string TestSourceDir() {
+#ifndef GOOGLE_THIRD_PARTY_PROTOBUF
 #ifdef _MSC_VER
   // Look for the "src" directory.
   string prefix = ".";
@@ -88,6 +89,9 @@ string TestSourceDir() {
     return result;
   }
 #endif
+#else
+  return "third_party/protobuf/src";
+#endif  // GOOGLE_THIRD_PARTY_PROTOBUF
 }
 
 namespace {