Index: src/H5api_adpt.h
===================================================================
--- src/H5api_adpt.h	(revision 26991)
+++ src/H5api_adpt.h	(revision 27474)
@@ -21,13 +21,6 @@
 #ifndef H5API_ADPT_H
 #define H5API_ADPT_H
 
-#ifdef __cplusplus
-#define __attribute__(X)  /*void*/
-#endif /* __cplusplus */
-#ifndef H5_HAVE_ATTRIBUTE
-#define __attribute__(X)  /*void*/
-#endif /* H5_HAVE_ATTRIBUTE */
-
 /* This will only be defined if HDF5 was built with CMake */
 #ifdef H5_BUILT_AS_DYNAMIC_LIB