1 files changed, 3 insertions, 2 deletions
diff --git a/extern/ceres/internal/ceres/canonical_views_clustering.h b/extern/ceres/internal/ceres/canonical_views_clustering.h
index 630adfed717..465233ddfcd 100644
--- a/extern/ceres/internal/ceres/canonical_views_clustering.h
+++ b/extern/ceres/internal/ceres/canonical_views_clustering.h
@@ -45,6 +45,7 @@
 #include <vector>
 
 #include "ceres/graph.h"
+#include "ceres/internal/port.h"
 
 namespace ceres {
 namespace internal {
@@ -94,13 +95,13 @@ struct CanonicalViewsClusteringOptions;
 // It is possible depending on the configuration of the clustering
 // algorithm that some of the vertices may not be assigned to any
 // cluster. In this case they are assigned to a cluster with id = -1;
-void ComputeCanonicalViewsClustering(
+CERES_EXPORT_INTERNAL void ComputeCanonicalViewsClustering(
     const CanonicalViewsClusteringOptions& options,
     const WeightedGraph<int>& graph,
     std::vector<int>* centers,
     std::unordered_map<int, int>* membership);
 
-struct CanonicalViewsClusteringOptions {
+struct CERES_EXPORT_INTERNAL CanonicalViewsClusteringOptions {
   // The minimum number of canonical views to compute.
   int min_views = 3;