--- a/src/EffectBase.cpp	2026-08-18 03:00:44.000000000 -0300
+++ b/src/EffectBase.cpp	2026-09-01 11:51:43.242559748 -0300
@@ -547,6 +547,7 @@
 	return scaled_mask;
 }
 
+#ifdef USE_OPENCV
 std::shared_ptr<QImage> EffectBase::TrackedObjectMask(std::shared_ptr<QImage> target_image, int64_t frame_number) const {
 	if (!target_image || target_image->isNull() || trackedObjects.empty())
 		return {};
@@ -596,6 +597,12 @@
 		return {};
 	return mask_image;
 }
+#else
+// TrackedObjectBBox is only compiled into the library when OpenCV is enabled
+// (OPENSHOT_CV_SOURCES), so referencing it unconditionally leaves libopenshot.so
+// with undefined symbols and breaks every downstream link.
+std::shared_ptr<QImage> EffectBase::TrackedObjectMask(std::shared_ptr<QImage>, int64_t) const { return {}; }
+#endif
 
 void EffectBase::BlendWithMask(std::shared_ptr<QImage> original_image, std::shared_ptr<QImage> effected_image,
 							   std::shared_ptr<QImage> mask_image) const {