External API function linkage decoration adjustment

ares.h

@@ -27,7 +27,8 @@
  * Define WIN32 when build target is Win32 API
  */
 
-#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32)
+#if (defined(_WIN32) || defined(__WIN32__)) && \
+   !defined(WIN32) && !defined(__SYMBIAN32__)
 #  define WIN32
 #endif
 
@@ -71,17 +72,18 @@ extern "C" {
 #if !defined(CARES_STATICLIB) && \
    (defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__))
    /* __declspec function decoration for Win32 and Symbian DLL's */
-#  if defined(CARES_BUILDING_LIB)
+#  if defined(CARES_BUILDING_LIBRARY)
 #    define CARES_EXTERN  __declspec(dllexport)
 #  else
 #    define CARES_EXTERN  __declspec(dllimport)
 #  endif
 #else
    /* visibility function decoration for other cases */
-#  ifdef CARES_HIDDEN_SYMBOLS
-#    define CARES_EXTERN CARES_EXTERN_SYMBOL
-#  else
+#  if !defined(CARES_HIDDEN_SYMBOLS) || \
+     defined(WIN32) || defined(_WIN32) || defined(__SYMBIAN32__)
 #    define CARES_EXTERN
+#  else
+#    define CARES_EXTERN CARES_EXTERN_SYMBOL
 #  endif
 #endif
 

configure.ac

@@ -111,10 +111,10 @@ esac
 dnl libtool setup
 AC_PROG_LIBTOOL
 
-AC_MSG_CHECKING([if we need CARES_BUILDING_LIB])
+AC_MSG_CHECKING([if we need CARES_BUILDING_LIBRARY])
 case $host in
   *-*-mingw*)
-    AC_DEFINE(CARES_BUILDING_LIB, 1, [when building c-ares library])
+    AC_DEFINE(CARES_BUILDING_LIBRARY, 1, [when building c-ares library])
     AC_MSG_RESULT(yes)
     AC_MSG_CHECKING([if we need CARES_STATICLIB])
     if test "X$enable_shared" = "Xno"