From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham
	autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII
Path: 
 g2news1.google.com!news3.google.com!feeder2.cambriumusenet.nl!feed.tweaknews.nl!193.201.147.79.MISMATCH!transit4.hitnews.eu!eweka.nl!hq-usenetpeers.eweka.nl!news.mixmin.net!news2.arglkargh.de!noris.net!newsfeed.arcor.de!newsspool3.arcor-online.net!news.arcor.de.POSTED!not-for-mail
Date: Fri, 04 Dec 2009 13:10:26 +0100
From: Georg Bauhaus <rm.dash-bauhaus@futureapps.de>
User-Agent: Thunderbird 2.0.0.23 (Macintosh/20090812)
MIME-Version: 1.0
Newsgroups: comp.lang.ada
Subject: Re: gnat: Execution_Time is not supported in this configuration
References: 
 <5e5d6fb5-e719-4195-925c-d1286699393d@f16g2000yqm.googlegroups.com>
In-Reply-To: 
 <5e5d6fb5-e719-4195-925c-d1286699393d@f16g2000yqm.googlegroups.com>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
Message-ID: <4b18fc33$0$6718$9b4e6d93@newsspool2.arcor-online.net>
Organization: Arcor
NNTP-Posting-Date: 04 Dec 2009 13:10:27 CET
NNTP-Posting-Host: f5f7868c.newsspool2.arcor-online.net
X-Trace: 
 DXC=1@k;iC4djedg`45cDR8l?oA9EHlD;3Ycb4Fo<]lROoRa8kF<OcfhCOkceNShYeeVglnc\616M64>jLh>_cHTX3jm=fSH6DDd:B`
X-Complaints-To: usenet-abuse@arcor.de
Xref: g2news1.google.com comp.lang.ada:8307
Date: 2009-12-04T13:10:27+01:00
List-Id: <comp.lang.ada>

singo schrieb:

> I cannot get the package Ada.Execution_Time to work with gnat,
> although the gnat documentation says that the real-time annex is fully
> supported... I use the gnat version 4.4 on a Ubuntu 9.10 distribution.

The reason are explained in the GNAT source files.  The ones I have show
a note, after the � box:
------------------------------------------------------------------------------
--                                                                          --
--                         GNAT RUN-TIME COMPONENTS                         --
--                                                                          --
--                   A D A . E X E C U T I O N _ T I M E                    --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
-- This specification is derived from the Ada Reference Manual for use with --
-- GNAT.  In accordance with the copyright of that document, you can freely --
-- copy and modify this specification,  provided that if you redistribute a --
-- modified version,  any changes that you have made are clearly indicated. --
--                                                                          --
------------------------------------------------------------------------------

--  This unit is not implemented in typical GNAT implementations that lie on
--  top of operating systems, because it is infeasible to implement in such
--  environments.

--  If a target environment provides appropriate support for this package
--  then the Unimplemented_Unit pragma should be removed from this spec and
--  an appropriate body provided.

with Ada.Task_Identification;
with Ada.Real_Time;

package Ada.Execution_Time is
   pragma Preelaborate;

   pragma Unimplemented_Unit;