Index: apr-1.6.3/include/apr.h.in
===================================================================
--- apr-1.6.3.orig/include/apr.h.in
+++ apr-1.6.3/include/apr.h.in
@@ -477,7 +477,7 @@ typedef  apr_uint32_t            apr_uin
  * headers, without defining APR_DECLARE_STATIC, will prepare the code to be
  * linked to the dynamic library.
  */
-#define APR_DECLARE(type)            type 
+#define APR_DECLARE(type)            __attribute__ ((visibility ("default"))) type 
 
 /**
  * The public APR functions using variable arguments are declared with 
@@ -490,7 +490,7 @@ typedef  apr_uint32_t            apr_uin
  *
  * </PRE>
  */
-#define APR_DECLARE_NONSTD(type)     type
+#define APR_DECLARE_NONSTD(type)      __attribute__ ((visibility ("default"))) type
 
 /**
  * The public APR variables are declared with AP_MODULE_DECLARE_DATA.
@@ -506,7 +506,7 @@ typedef  apr_uint32_t            apr_uin
  *
  * </PRE>
  */
-#define APR_DECLARE_DATA
+#define APR_DECLARE_DATA  __attribute__ ((visibility ("default")))
 
 #elif defined(APR_DECLARE_STATIC)
 #define APR_DECLARE(type)            type __stdcall
Index: apr-1.6.3/include/apr_support.h
===================================================================
--- apr-1.6.3.orig/include/apr_support.h
+++ apr-1.6.3/include/apr_support.h
@@ -45,7 +45,7 @@ extern "C" {
  *        otherwise wait for data to be able to be written. 
  * @return APR_TIMEUP if we run out of time.
  */
-apr_status_t apr_wait_for_io_or_timeout(apr_file_t *f, apr_socket_t *s,
+APR_DECLARE(apr_status_t) apr_wait_for_io_or_timeout(apr_file_t *f, apr_socket_t *s,
                                         int for_read);
 
 /** @} */