Protect GCC visibility attribute in a public header.

foo86 · May 18, 2015 · c4d213b · c4d213b
1 parent 1b87dfb
commit c4d213b
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/libdcadec/dca_context.h b/libdcadec/dca_context.h
@@ -46,12 +46,15 @@
 /**@}*/
 
 /**@{*/
-#ifdef _WIN32
+#if (defined _WIN32)
 #define DCADEC_SHARED_EXPORT    __declspec(dllexport)
 #define DCADEC_SHARED_IMPORT    __declspec(dllimport)
-#else
+#elif (__GNUC__ >= 4)
 #define DCADEC_SHARED_EXPORT    __attribute__((visibility("default")))
 #define DCADEC_SHARED_IMPORT    __attribute__((visibility("default")))
+#else
+#define DCADEC_SHARED_EXPORT
+#define DCADEC_SHARED_IMPORT
 #endif
 
 #ifdef DCADEC_SHARED