Added MPFR; will be needed for gfortran, that doesn't work for now.

svn path=/nixpkgs/trunk/; revision=9526

pkgs/development/libraries/mpfr/default.nix

@@ -0,0 +1,18 @@
+args: with args;
+stdenv.mkDerivation {
+  name = "mpfr-2.3.0";
+
+  src =
+	fetchurl {
+		url = http://www.mpfr.org/mpfr-current/mpfr-2.3.0.tar.bz2;
+		sha256 = "0j1dgpqhw21xc0clm7785jm6k04v9zsssdydvm2z3lcj9ws0v7rm";
+	};
+
+  buildInputs =[gmp];
+
+  meta = {
+    description = "
+	Multi Precision Floating arithmetic with correct Rounding.
+";
+  };
+}