gnatmake: "ada.numerics.real_arrays" is not a predefined library unit

Hello,

My linux system (opensuse 10.3 updated) does not
find "ada.numerics.real_arrays.  Should it ?

Details:
--------
I tried to compile a program starting like this:

with Text_IO;
use  Text_IO;
with   Ada.Numerics,Ada.Numerics.Real_Arrays;
with   Ada.Numerics.Generic_Elementary_Functions;
procedure test2 is

....


I used the command:

gnatmake -gnat05 test2.adb

Then I get the error message:

test2.adb:3:21: "ada.numerics.real_arrays" is not a predefined library
unit
gnatmake: "test2.adb" compilation error

Is there any hope for me to use "Ada.Numerics.Real.Arrays" ?

reinert