diff --git a/packages/toolchain/math/mpfr/patches/mpfr-3.1.0-allpatches_20120309.patch b/packages/toolchain/math/mpfr/patches/mpfr-3.1.0-allpatches_20120312.patch
similarity index 96%
rename from packages/toolchain/math/mpfr/patches/mpfr-3.1.0-allpatches_20120309.patch
rename to packages/toolchain/math/mpfr/patches/mpfr-3.1.0-allpatches_20120312.patch
index 13c081b388..cb7880cff2 100644
--- a/packages/toolchain/math/mpfr/patches/mpfr-3.1.0-allpatches_20120309.patch
+++ b/packages/toolchain/math/mpfr/patches/mpfr-3.1.0-allpatches_20120312.patch
@@ -1262,3 +1262,55 @@ diff -Naurd mpfr-3.1.0-a/tests/tinits.c mpfr-3.1.0-b/tests/tinits.c
 +
    return 0;
  }
+diff -Naurd mpfr-3.1.0-a/PATCHES mpfr-3.1.0-b/PATCHES
+--- mpfr-3.1.0-a/PATCHES	2012-03-12 11:59:47.000000000 +0000
++++ mpfr-3.1.0-b/PATCHES	2012-03-12 11:59:47.000000000 +0000
+@@ -0,0 +1 @@
++__gmp_const
+diff -Naurd mpfr-3.1.0-a/VERSION mpfr-3.1.0-b/VERSION
+--- mpfr-3.1.0-a/VERSION	2012-03-08 15:17:03.000000000 +0000
++++ mpfr-3.1.0-b/VERSION	2012-03-12 11:59:47.000000000 +0000
+@@ -1 +1 @@
+-3.1.0-p7
++3.1.0-p8
+diff -Naurd mpfr-3.1.0-a/src/mpfr.h mpfr-3.1.0-b/src/mpfr.h
+--- mpfr-3.1.0-a/src/mpfr.h	2012-03-08 15:17:03.000000000 +0000
++++ mpfr-3.1.0-b/src/mpfr.h	2012-03-12 11:59:47.000000000 +0000
+@@ -27,7 +27,7 @@
+ #define MPFR_VERSION_MAJOR 3
+ #define MPFR_VERSION_MINOR 1
+ #define MPFR_VERSION_PATCHLEVEL 0
+-#define MPFR_VERSION_STRING "3.1.0-p7"
++#define MPFR_VERSION_STRING "3.1.0-p8"
+ 
+ /* Macros dealing with MPFR VERSION */
+ #define MPFR_VERSION_NUM(a,b,c) (((a) << 16L) | ((b) << 8) | (c))
+@@ -39,6 +39,18 @@
+ # include <gmp.h>
+ #endif
+ 
++/* GMP's internal __gmp_const macro has been removed on 2012-03-04:
++     http://gmplib.org:8000/gmp/rev/d287cfaf6732
++   const is standard and now assumed to be available. If the __gmp_const
++   definition is no longer present in GMP, this probably means that GMP
++   assumes that const is available; thus let's define it to const.
++   Note: this is a temporary fix that can be backported to previous MPFR
++   versions. In the future, __gmp_const should be replaced by const like
++   in GMP. */
++#ifndef __gmp_const
++# define __gmp_const const
++#endif
++
+ /* Avoid some problems with macro expansion if the user defines macros
+    with the same name as keywords. By convention, identifiers and macro
+    names starting with mpfr_ are reserved by MPFR. */
+diff -Naurd mpfr-3.1.0-a/src/version.c mpfr-3.1.0-b/src/version.c
+--- mpfr-3.1.0-a/src/version.c	2012-03-08 15:17:03.000000000 +0000
++++ mpfr-3.1.0-b/src/version.c	2012-03-12 11:59:47.000000000 +0000
+@@ -25,5 +25,5 @@
+ const char *
+ mpfr_get_version (void)
+ {
+-  return "3.1.0-p7";
++  return "3.1.0-p8";
+ }