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-rw-r--r--ext/mbstring/mbstring.h23
1 files changed, 13 insertions, 10 deletions
diff --git a/ext/mbstring/mbstring.h b/ext/mbstring/mbstring.h
index 63afaf5094..1393559f8e 100644
--- a/ext/mbstring/mbstring.h
+++ b/ext/mbstring/mbstring.h
@@ -52,17 +52,20 @@
#endif
#ifdef PHP_WIN32
-# undef MBSTRING_API
-# ifdef MBSTRING_EXPORTS
-# define MBSTRING_API __declspec(dllexport)
-# elif defined(COMPILE_DL_MBSTRING)
-# define MBSTRING_API __declspec(dllimport)
-# else
-# define MBSTRING_API /* nothing special */
-# endif
+# undef MBSTRING_API
+# ifdef MBSTRING_EXPORTS
+# define MBSTRING_API __declspec(dllexport)
+# elif defined(COMPILE_DL_MBSTRING)
+# define MBSTRING_API __declspec(dllimport)
+# else
+# define MBSTRING_API /* nothing special */
+# endif
+#elif defined(__GNUC__) && __GNUC__ >= 4
+# undef MBSTRING_API
+# define MBSTRING_API __attribute__ ((visibility("default")))
#else
-# undef MBSTRING_API
-# define MBSTRING_API /* nothing special */
+# undef MBSTRING_API
+# define MBSTRING_API /* nothing special */
#endif