--- magick/exception.c	2011-09-06 15:31:15.000000000 +0200
+++ magick/exception.c	2011-09-06 17:11:20.000000000 +0200
@@ -458,7 +458,11 @@ MagickExport char *GetExceptionMessage(c
     exception[MaxTextExtent];
 
 #if defined(MAGICKCORE_HAVE_STRERROR_R)
-  (void) strerror_r(error,exception,sizeof(exception));
+  #if !defined(_GNU_SOURCE)
+    (void) strerror_r(error,exception,sizeof(exception));
+  #else
+    (void) CopyMagickString(exception,strerror_r(error, exception, sizeof(exception)),sizeof(exception));
+  #endif
 #else
   (void) CopyMagickString(exception,strerror(error),sizeof(exception));
 #endif