diff -pru trunk.unmodified/gcc/config/mips/iris.h trunk/gcc/config/mips/iris.h
--- trunk.unmodified/gcc/config/mips/iris.h	2009-04-03 10:48:59.000000000 +0530
+++ trunk/gcc/config/mips/iris.h	2009-04-04 02:02:16.000000000 +0530
@@ -80,6 +80,39 @@ along with GCC; see the file COPYING3.  
 #undef WINT_TYPE_SIZE
 #define WINT_TYPE_SIZE 32
 
+/* C99 stdint.h types.  */
+#define INT8_TYPE "signed char"
+#define INT16_TYPE "short int"
+#define INT32_TYPE "int"
+#define INT64_TYPE "long long int"
+#define UINT8_TYPE "unsigned char"
+#define UINT16_TYPE "short unsigned int"
+#define UINT32_TYPE "unsigned int"
+#define UINT64_TYPE "long long unsigned int"
+
+#define INT_LEAST8_TYPE "signed char"
+#define INT_LEAST16_TYPE "short int"
+#define INT_LEAST32_TYPE "int"
+#define INT_LEAST64_TYPE "long long int"
+#define UINT_LEAST8_TYPE "unsigned char"
+#define UINT_LEAST16_TYPE "short unsigned int"
+#define UINT_LEAST32_TYPE "unsigned int"
+#define UINT_LEAST64_TYPE "long long unsigned int"
+
+#define INT_FAST8_TYPE "signed char"
+#define INT_FAST16_TYPE "short int"
+#define INT_FAST32_TYPE "int"
+#define INT_FAST64_TYPE "long long int"
+#define UINT_FAST8_TYPE "unsigned char"
+#define UINT_FAST16_TYPE "short unsigned int"
+#define UINT_FAST32_TYPE "unsigned int"
+#define UINT_FAST64_TYPE "long long unsigned int"
+
+#define INTPTR_TYPE "long int"
+#define UINTPTR_TYPE "long unsigned int"
+
+#define SIG_ATOMIC_TYPE "int"
+
 /* Plain char is unsigned in the SGI compiler.  */
 #undef DEFAULT_SIGNED_CHAR
 #define DEFAULT_SIGNED_CHAR 0
diff -pru trunk.unmodified/gcc/config.gcc trunk/gcc/config.gcc
--- trunk.unmodified/gcc/config.gcc	2009-04-03 10:49:00.000000000 +0530
+++ trunk/gcc/config.gcc	2009-04-04 02:02:48.000000000 +0530
@@ -1502,6 +1502,7 @@ mips-sgi-irix[56]*)
 	tm_file="elfos.h ${tm_file} mips/iris.h"
 	tmake_file="mips/t-iris mips/t-slibgcc-irix"
 	target_cpu_default="MASK_ABICALLS"
+	use_gcc_stdint=wrap
 	case ${target} in
 	*-*-irix5*)
 		tm_file="${tm_file} mips/iris5.h"