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From: Martin Dowie <martin.dowie@btopenworld.com>
Newsgroups: comp.lang.ada
Subject: Re: How to detect OS type and version?
Date: Thu, 13 Oct 2005 06:05:49 +0000 (UTC)
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Date: 2005-10-13T06:05:49+00:00
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Roger Blum wrote:
> Is there a way within Ada (GNAT 3.15p) to tell whether the application is 
> running on Linux or Windows (and the version of the OS)?

There is no single standard why... yet!

I think that you will be able to do this with "package 
Ada.Environment_Variables" come Ada200Y, e.g.

if Ada.Environment_Variables.Exists ("OS")
    and Ada.Environment_Variables.Value ("OS") = "Windows_NT" then
    ...
elsif Ada.Environment_Variables.Exists ("OSTYPE")
       and Ada.Environment_Variables.Value ("OSTYPE") = "linux-gnu" then
    ...
else
    -- Unknown OS
    ...
end if;

I have a (partially tested) version of this package. If you (or anyone 
else) would like it, please email me directly and I'll see what I can 
do! :-)

Cheers

-- Martin