diff --git a/include/mapnik/agg_renderer.hpp b/include/mapnik/agg_renderer.hpp
index 4a8dd89e2..bade3b4c1 100644
--- a/include/mapnik/agg_renderer.hpp
+++ b/include/mapnik/agg_renderer.hpp
@@ -53,6 +53,7 @@ namespace mapnik {
   class marker;
   class proj_transform;
   struct rasterizer;
+  class image_32;
 }
 
 namespace mapnik {
@@ -165,6 +166,8 @@ private:
     void setup(Map const& m);
 };
 
+extern template class MAPNIK_DECL agg_renderer<image_32>;
+
 } // namespace mapnik
 
 #endif // MAPNIK_AGG_RENDERER_HPP
diff --git a/include/mapnik/datasource_cache.hpp b/include/mapnik/datasource_cache.hpp
index 6646888bd..bd646abb8 100644
--- a/include/mapnik/datasource_cache.hpp
+++ b/include/mapnik/datasource_cache.hpp
@@ -59,7 +59,7 @@ private:
     std::set<std::string> plugin_directories_;
 };
 
-extern template class singleton<datasource_cache, CreateStatic>;
+extern template class MAPNIK_DECL singleton<datasource_cache, CreateStatic>;
 
 }
 
diff --git a/include/mapnik/text/vertex_cache.hpp b/include/mapnik/text/vertex_cache.hpp
index 552b6845d..6069d03e7 100644
--- a/include/mapnik/text/vertex_cache.hpp
+++ b/include/mapnik/text/vertex_cache.hpp
@@ -25,6 +25,7 @@
 // mapnik
 #include <mapnik/pixel_position.hpp>
 #include <mapnik/debug.hpp>
+#include <mapnik/config.hpp>
 
 // agg
 #include "agg_basics.h"
@@ -41,7 +42,7 @@ class vertex_cache;
 using vertex_cache_ptr = std::shared_ptr<vertex_cache>;
 
 // Caches all path points and their lengths. Allows easy moving in both directions.
-class vertex_cache
+class MAPNIK_DECL vertex_cache
 {
     struct segment
     {