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-Thread: 103376,67e3620b7774a162,start
X-Google-NewGroupId: yes
X-Google-Attributes: gida07f3367d7,domainid0,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Received: by 10.68.190.99 with SMTP id gp3mr3274161pbc.1.1325828704331;
        Thu, 05 Jan 2012 21:45:04 -0800 (PST)
Path: 
 lh20ni139817pbb.0!nntp.google.com!news1.google.com!postnews.google.com!p16g2000yqd.googlegroups.com!not-for-mail
From: Jerry <lanceboyle@qwest.net>
Newsgroups: comp.lang.ada
Subject: How to get GNAT version during build process
Date: Thu, 5 Jan 2012 21:45:02 -0800 (PST)
Organization: http://groups.google.com
Message-ID: 
 <17cd8808-bbcf-4c15-b0a1-de4bf7a110b4@p16g2000yqd.googlegroups.com>
NNTP-Posting-Host: 97.117.185.89
Mime-Version: 1.0
X-Trace: posting.google.com 1325828702 23575 127.0.0.1 (6 Jan 2012 05:45:02
 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Fri, 6 Jan 2012 05:45:02 +0000 (UTC)
Complaints-To: groups-abuse@google.com
Injection-Info: p16g2000yqd.googlegroups.com; posting-host=97.117.185.89;
 posting-account=x5rpZwoAAABMN2XPwcebPWPkebpwQNJG
User-Agent: G2/1.0
X-Google-Web-Client: true
X-Google-Header-Order: HLUARECNK
X-HTTP-UserAgent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; en-us)
 AppleWebKit/533.19.4 (KHTML,
 like Gecko) Version/5.0.3 Safari/533.19.4,gzip(gfe)
Content-Type: text/plain; charset=ISO-8859-1
Date: 2012-01-05T21:45:02-08:00
List-Id: <comp.lang.ada>

How would one discover the version of GNAT used in a build? I'm
inquiring for someone using cmake. They have cobbled something
together but I get the feeling it is too brittle and requires manual
updating from time to time. Here is the patch that someone submitted:


diff -up plplot-5.9.9/cmake/modules/ada.cmake.gnat plplot-5.9.9/cmake/
modules/ada.cmake
--- plplot-5.9.9/cmake/modules/ada.cmake.gnat	2011-10-12
18:43:01.000000000 -0600
+++ plplot-5.9.9/cmake/modules/ada.cmake	2012-01-04 08:58:11.501470982
-0700
@@ -43,7 +43,7 @@ if(ENABLE_ada)
 endif(ENABLE_ada)

 if(ENABLE_ada)
-  find_library(GNAT_LIB NAMES gnat gnat-4.5 gnat-4.4 gnat-4.3
gnat-4.2 gnat-4.1)
+  find_library(GNAT_LIB NAMES gnat gnat-4.7 gnat-4.6 gnat-4.5
gnat-4.4 gnat-4.3 gnat-4.2 gnat-4.1)
   if(NOT GNAT_LIB)
     message(STATUS "WARNING: "
       "gnat library not found. Disabling ada bindings")


I stumbled across
GNAT.Compiler_Version (g-comver.ads)
in the GNAT library but when I ran this

with Ada.Text_IO; use Ada.Text_IO;
with GNAT.Compiler_Version;
procedure ada_version is
    package CVer is new GNAT.Compiler_Version;
    use Cver;
begin
    Put_Line(Version);
end ada_version;

all I got was this

GPL 2010 (20100603)

whereas g-comver.ads promises a  result in this format

v.vvx (yyyyddmm)"

where v.vv would be something like 3.16.

Jerry