--- gmp-impl.h.dist	2009-09-29 11:09:26.032809160 +0100
+++ gmp-impl.h.dist	2009-09-29 11:10:32.619471240 +0100
@@ -114,6 +114,10 @@ along with the GNU MP Library.  If not, 
 # endif
 #endif
 
+#ifdef __sgi        /* stdint.h is C99-only */
+typedef unsigned int uint_least32_t;
+#endif
+
 #ifdef __cplusplus
 #include <cstring>  /* for strlen */
 #include <string>   /* for std::string */
--- gmp-h.in.dist	2009-09-29 11:11:05.092908520 +0100
+++ gmp-h.in.dist	2009-09-29 11:12:05.662346920 +0100
@@ -353,6 +353,14 @@ typedef __mpq_struct *mpq_ptr;
 #define _GMP_H_HAVE_VA_LIST 1
 #endif
 
+/* On IRIX, the va_list defintion can somehow get lost, even if <stdarg.h>
+   or <varargs.h> is included - (re)defining it here shouldn't break anything
+   and prevents build errors, although it is noisy.  */
+
+#ifdef __sgi
+typedef char *va_list;
+#endif
+
 /* Test for gcc >= maj.min, as per __GNUC_PREREQ in glibc */
 #if defined (__GNUC__) && defined (__GNUC_MINOR__)
 #define __GMP_GNUC_PREREQ(maj, min) \