@@ -15,13 +15,19 @@
  */
 
 #import "OFString.h"
 
 #ifdef OF_APPLE_RUNTIME
+# ifdef __cplusplus
+extern "C" {
+#endif
 extern void *_OFConstantStringClassReference;
+# ifdef __cplusplus
+}
+#endif
 #endif
 
 /**
  * \brief A class for storing constant strings using the \@"" literal.
  */
 @interface OFConstantString: OFString
 @end