--- mpfr-gmp.h	2009-02-20 04:43:17.000000000 -0500
+++ mpfr-gmp.h	2009-09-21 18:54:44.058699000 -0400
@@ -173,7 +173,7 @@
 #define XDEBUG
 
 /* For longlong.h */
-#ifdef HAVE_ATTRIBUTE_MODE
+#if defined(HAVE_ATTRIBUTE_MODE) && defined(__GNUC__)
 typedef unsigned int UQItype    __attribute__ ((mode (QI)));
 typedef          int SItype     __attribute__ ((mode (SI)));
 typedef unsigned int USItype    __attribute__ ((mode (SI)));