windows-qbs-2.diff

diff --git a/share/qbs/modules/protobuf/cpp/protobufcpp.qbs b/share/qbs/modules/protobuf/cpp/protobufcpp.qbs
index 50caf05..3dfb39a 100644
--- a/share/qbs/modules/protobuf/cpp/protobufcpp.qbs
+++ b/share/qbs/modules/protobuf/cpp/protobufcpp.qbs
@@ -8,7 +8,7 @@
 
 ProtobufBase {
     property string includePath: includeProbe.path
-    property string libraryPath: libraryProbe.path
+    property string libraryPath: libraryProbe.found ? libraryProbe.path : undefined
 
     property bool useGrpc: false
 
@@ -17,10 +17,11 @@
 
     readonly property string _libraryName: {
         var libraryName;
-        if (libraryProbe.found)
+        if (libraryProbe.found) {
             libraryName = FileInfo.baseName(libraryProbe.fileName);
-        if (libraryName.startsWith("lib"))
-            libraryName = libraryName.substring(3);
+            if (libraryName.startsWith("lib"))
+                libraryName = libraryName.substring(3);
+        }
         return libraryName;
     }
 
@@ -104,6 +105,7 @@
             "protobuf",
             "protobufd",
         ]
+        searchPaths: libraryPath ? [libraryPath] : []
     }
 
     Probes.IncludeProbe {