From d4f11bd80e6a9a2809d97d0cce2aa9730658f50c Mon Sep 17 00:00:00 2001
From: Dane Springmeyer <dane@mapbox.com>
Date: Thu, 2 Oct 2014 10:27:17 -0700
Subject: [PATCH] fix miniz visibility with -fvisibility=hidden

---
 include/mapnik/miniz_png.hpp | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/include/mapnik/miniz_png.hpp b/include/mapnik/miniz_png.hpp
index 1956e5183..cc59931c8 100644
--- a/include/mapnik/miniz_png.hpp
+++ b/include/mapnik/miniz_png.hpp
@@ -32,9 +32,8 @@
 #include <iostream>
 #include <stdexcept>
 
-#ifdef _MSC_VER
-#include <mapnik/graphics.hpp>
-#endif
+#include <mapnik/image_data.hpp>
+#include <mapnik/image_view.hpp>
 
 /* miniz.c porting issues:
   - duplicate symbols in python bindings require moving miniz.c include to just cpp file
@@ -84,14 +83,12 @@ private:
     static const unsigned char IEND_tpl[];
 };
 
-#ifdef _MSC_VER
-template MAPNIK_DECL void PNGWriter::writeIDAT<image_data_8>(image_data_8 const& image);
-template MAPNIK_DECL void PNGWriter::writeIDAT<image_view<image_data_8> >(image_view<image_data_8> const& image);
-template MAPNIK_DECL void PNGWriter::writeIDAT<image_data_32>(image_data_32 const& image);
-template MAPNIK_DECL void PNGWriter::writeIDAT<image_view<image_data_32> >(image_view<image_data_32> const& image);
-template MAPNIK_DECL void PNGWriter::writeIDATStripAlpha<image_data_32>(image_data_32 const& image);
-template MAPNIK_DECL void PNGWriter::writeIDATStripAlpha<image_view<image_data_32> >(image_view<image_data_32> const& image);
-#endif
+extern template MAPNIK_DECL void PNGWriter::writeIDAT<image_data_8>(image_data_8 const& image);
+extern template MAPNIK_DECL void PNGWriter::writeIDAT<image_view<image_data_8> >(image_view<image_data_8> const& image);
+extern template MAPNIK_DECL void PNGWriter::writeIDAT<image_data_32>(image_data_32 const& image);
+extern template MAPNIK_DECL void PNGWriter::writeIDAT<image_view<image_data_32> >(image_view<image_data_32> const& image);
+extern template MAPNIK_DECL void PNGWriter::writeIDATStripAlpha<image_data_32>(image_data_32 const& image);
+extern template MAPNIK_DECL void PNGWriter::writeIDATStripAlpha<image_view<image_data_32> >(image_view<image_data_32> const& image);
 
 }}