diff --git a/include/boost/smart_ptr/allocate_shared_array.hpp b/include/boost/smart_ptr/allocate_shared_array.hpp
index 61beef4..c7d2df4 100644
--- a/include/boost/smart_ptr/allocate_shared_array.hpp
+++ b/include/boost/smart_ptr/allocate_shared_array.hpp
@@ -424,7 +424,7 @@ private:
 struct sp_default { };
 
 template<class T, bool E = sp_use_construct<T>::value>
-class sp_array_base
+class BOOST_SYMBOL_VISIBLE sp_array_base
     : public sp_counted_base {
     typedef typename T::type allocator;
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_acc_ia64.hpp b/include/boost/smart_ptr/detail/sp_counted_base_acc_ia64.hpp
index ec6f6ee..aa7ea9a 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_acc_ia64.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_acc_ia64.hpp
@@ -16,6 +16,7 @@
 //
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 #include <machine/sys/inline.h>
 
 namespace boost
@@ -71,7 +72,7 @@ inline int atomic_conditional_increment( int * pw )
     }
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_aix.hpp b/include/boost/smart_ptr/detail/sp_counted_base_aix.hpp
index ce8ee68..cbb6426 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_aix.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_aix.hpp
@@ -21,6 +21,7 @@
 //
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 #include <builtins.h>
 #include <sys/atomic_op.h>
 
@@ -63,7 +64,7 @@ inline int32_t atomic_conditional_increment( int32_t * pw )
     }
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_clang.hpp b/include/boost/smart_ptr/detail/sp_counted_base_clang.hpp
index 5d6e073..c2c20d3 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_clang.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_clang.hpp
@@ -16,6 +16,7 @@
 //  http://www.boost.org/LICENSE_1_0.txt
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 #include <boost/cstdint.hpp>
 
 namespace boost
@@ -63,7 +64,7 @@ inline boost::int_least32_t atomic_conditional_increment( atomic_int_least32_t *
 # pragma clang diagnostic ignored "-Wweak-vtables"
 #endif
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_cw_ppc.hpp b/include/boost/smart_ptr/detail/sp_counted_base_cw_ppc.hpp
index 065f7c3..c43297e 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_cw_ppc.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_cw_ppc.hpp
@@ -25,6 +25,7 @@
 //
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 
 namespace boost
 {
@@ -91,7 +92,7 @@ store:
     return a;
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_cw_x86.hpp b/include/boost/smart_ptr/detail/sp_counted_base_cw_x86.hpp
index 3a3d4d4..ce34b4c 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_cw_x86.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_cw_x86.hpp
@@ -26,6 +26,7 @@
 //
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 
 namespace boost
 {
@@ -79,7 +80,7 @@ inline int atomic_conditional_increment( int * pw )
     }
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_gcc_ia64.hpp b/include/boost/smart_ptr/detail/sp_counted_base_gcc_ia64.hpp
index 6c3cce8..32642df 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_gcc_ia64.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_gcc_ia64.hpp
@@ -17,6 +17,7 @@
 //
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 
 namespace boost
 {
@@ -78,7 +79,7 @@ inline int atomic_conditional_increment( int * pw )
     return rv;
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_gcc_mips.hpp b/include/boost/smart_ptr/detail/sp_counted_base_gcc_mips.hpp
index c3175cf..c4ce053 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_gcc_mips.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_gcc_mips.hpp
@@ -21,6 +21,7 @@
 //
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 
 namespace boost
 {
@@ -108,7 +109,7 @@ inline int atomic_conditional_increment( int * pw )
     return rv;
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_gcc_ppc.hpp b/include/boost/smart_ptr/detail/sp_counted_base_gcc_ppc.hpp
index 0fb8074..5cf5b3f 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_gcc_ppc.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_gcc_ppc.hpp
@@ -25,6 +25,7 @@
 //
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 
 namespace boost
 {
@@ -102,7 +103,7 @@ inline int atomic_conditional_increment( int * pw )
     return rv;
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_gcc_sparc.hpp b/include/boost/smart_ptr/detail/sp_counted_base_gcc_sparc.hpp
index b8bb707..2f27b96 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_gcc_sparc.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_gcc_sparc.hpp
@@ -20,6 +20,7 @@
 //  Thanks to Michael van der Westhuizen
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 #include <inttypes.h> // int32_t
 
 namespace boost
@@ -87,7 +88,7 @@ inline int32_t atomic_conditional_increment( int32_t * pw )
     }    
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_gcc_x86.hpp b/include/boost/smart_ptr/detail/sp_counted_base_gcc_x86.hpp
index 3d2dd61..ec44c70 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_gcc_x86.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_gcc_x86.hpp
@@ -25,6 +25,7 @@
 //
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 
 namespace boost
 {
@@ -94,7 +95,7 @@ inline int atomic_conditional_increment( int * pw )
     return rv;
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_nt.hpp b/include/boost/smart_ptr/detail/sp_counted_base_nt.hpp
index dea905c..e61bd88 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_nt.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_nt.hpp
@@ -19,6 +19,7 @@
 //
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 
 namespace boost
 {
@@ -26,7 +27,7 @@ namespace boost
 namespace detail
 {
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_pt.hpp b/include/boost/smart_ptr/detail/sp_counted_base_pt.hpp
index 85f2563..3110f23 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_pt.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_pt.hpp
@@ -20,6 +20,7 @@
 
 #include <boost/detail/sp_typeinfo.hpp>
 #include <boost/assert.hpp>
+#include <boost/config.hpp>
 #include <pthread.h>
 
 namespace boost
@@ -28,7 +29,7 @@ namespace boost
 namespace detail
 {
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_snc_ps3.hpp b/include/boost/smart_ptr/detail/sp_counted_base_snc_ps3.hpp
index 7b5f917..1b9979b 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_snc_ps3.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_snc_ps3.hpp
@@ -20,6 +20,7 @@
 //  Thanks to Michael van der Westhuizen
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 #include <inttypes.h> // uint32_t
 
 namespace boost
@@ -82,7 +83,7 @@ inline uint32_t atomic_conditional_increment( uint32_t * pw )
     }    
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_solaris.hpp b/include/boost/smart_ptr/detail/sp_counted_base_solaris.hpp
index 0db9c6c..c0d69dc 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_solaris.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_solaris.hpp
@@ -21,6 +21,7 @@
 //
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 #include <atomic.h>
 
 namespace boost
@@ -29,7 +30,7 @@ namespace boost
 namespace detail
 {
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_spin.hpp b/include/boost/smart_ptr/detail/sp_counted_base_spin.hpp
index faf503a..b996626 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_spin.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_spin.hpp
@@ -20,6 +20,7 @@
 
 #include <boost/detail/sp_typeinfo.hpp>
 #include <boost/smart_ptr/detail/spinlock_pool.hpp>
+#include <boost/config.hpp>
 
 namespace boost
 {
@@ -51,7 +52,7 @@ inline int atomic_conditional_increment( int * pw )
     return rv;
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_std_atomic.hpp b/include/boost/smart_ptr/detail/sp_counted_base_std_atomic.hpp
index 9f562b9..8cd18c9 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_std_atomic.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_std_atomic.hpp
@@ -16,6 +16,7 @@
 //  http://www.boost.org/LICENSE_1_0.txt
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 #include <atomic>
 #include <cstdint>
 
@@ -57,7 +58,7 @@ inline std::int_least32_t atomic_conditional_increment( std::atomic_int_least32_
     }    
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_sync.hpp b/include/boost/smart_ptr/detail/sp_counted_base_sync.hpp
index d2138e7..17128cc 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_sync.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_sync.hpp
@@ -16,6 +16,7 @@
 //  http://www.boost.org/LICENSE_1_0.txt
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 #include <limits.h>
 
 #if defined( __ia64__ ) && defined( __INTEL_COMPILER )
@@ -76,7 +77,7 @@ inline sp_int32_t atomic_conditional_increment( sp_int32_t * pw )
     }    
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_vacpp_ppc.hpp b/include/boost/smart_ptr/detail/sp_counted_base_vacpp_ppc.hpp
index f2de3b0..088ed63 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_vacpp_ppc.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_vacpp_ppc.hpp
@@ -22,6 +22,7 @@
 //
 
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 
 extern "builtin" void __lwsync(void);
 extern "builtin" void __isync(void);
@@ -70,7 +71,7 @@ inline int atomic_conditional_increment( int *pw )
    }
 }
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_base_w32.hpp b/include/boost/smart_ptr/detail/sp_counted_base_w32.hpp
index 960e42e..46bd4d1 100644
--- a/include/boost/smart_ptr/detail/sp_counted_base_w32.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_base_w32.hpp
@@ -27,6 +27,7 @@
 #include <boost/smart_ptr/detail/sp_interlocked.hpp>
 #include <boost/detail/workaround.hpp>
 #include <boost/detail/sp_typeinfo.hpp>
+#include <boost/config.hpp>
 
 namespace boost
 {
@@ -34,7 +35,7 @@ namespace boost
 namespace detail
 {
 
-class sp_counted_base
+class BOOST_SYMBOL_VISIBLE sp_counted_base
 {
 private:
 
diff --git a/include/boost/smart_ptr/detail/sp_counted_impl.hpp b/include/boost/smart_ptr/detail/sp_counted_impl.hpp
index fa2f75e..3c0502a 100644
--- a/include/boost/smart_ptr/detail/sp_counted_impl.hpp
+++ b/include/boost/smart_ptr/detail/sp_counted_impl.hpp
@@ -64,7 +64,7 @@ template<class D> D * get_local_deleter( local_sp_deleter<D> * p );
 
 //
 
-template<class X> class sp_counted_impl_p: public sp_counted_base
+template<class X> class BOOST_SYMBOL_VISIBLE sp_counted_impl_p: public sp_counted_base
 {
 private:
 
@@ -143,7 +143,7 @@ public:
 # pragma option push -Vx-
 #endif
 
-template<class P, class D> class sp_counted_impl_pd: public sp_counted_base
+template<class P, class D> class BOOST_SYMBOL_VISIBLE sp_counted_impl_pd: public sp_counted_base
 {
 private:
 
@@ -216,7 +216,7 @@ public:
 #endif
 };
 
-template<class P, class D, class A> class sp_counted_impl_pda: public sp_counted_base
+template<class P, class D, class A> class BOOST_SYMBOL_VISIBLE sp_counted_impl_pda: public sp_counted_base
 {
 private: