64 bit compiling problem

[Guest]

>From gressett@noao.edu Mon Sep 19 12:18:15 2005
Date: Mon, 19 Sep 2005 12:18:09 -0700 (MST)
From: Katrina Gressett <gressett@noao.edu>
To: Mike Fitzpatrick <fitz@noao.edu>
Subject: 64 bit compiling problems with IRAF and GRASP

Hi Mike,
I'm trying to compile GONG's GRASP package on a fedora core 3, 64 bit
architecture, linux box with iraf 2.12.2 installed (and patched) and I'm
running into a bit of a library problem.

When ever a package tries to link I get this error:
/usr/bin/ld: warning: i386 architecture of input file
`/opt/iraf/iraf/bin.redhat/libvops.a(achtsu.o)' is incompatible with
i386:x86-64 output

Have you guys run into this? Is there a way I can get around this?

Thanks a bunch!
Trina Gressett

--
--
___________________________________________________________
Katrina Gressett
NSO/GONG -- Data Reduction Specialist
gressett@noao.edu
520.318.8568
___________________________________________________________


>From fitz@tucana.tuc.noao.edu Mon Sep 19 12:22:36 2005
Date: Mon, 19 Sep 2005 12:22:35 -0700
From: Mike Fitzpatrick <fitz@tucana.tuc.noao.edu>
To: fitz@noao.edu, gressett@noao.edu
Subject: Re: 64 bit compiling problems with IRAF and GRASP
Cc: fitz@tucana.tuc.noao.edu

Hi Trina,
64-bit compilation is not supported by IRAF and won't likely be
anytime soon given NOAO's decision to "scale back" its IRAF work. The
32-bit compiled binaries will run on some 64-bit hardware but won't take
full advantage of the machine or address space, but it means you can
develop on a 32-bit machine and move the package when done.

-Mike

>From gressett@noao.edu Mon Sep 19 12:40:03 2005
Date: Mon, 19 Sep 2005 12:39:55 -0700 (MST)
From: Katrina Gressett <gressett@noao.edu>
To: Mike Fitzpatrick <fitz@tucana.tuc.noao.edu>
Subject: Re: 64 bit compiling problems with IRAF and GRASP

Thanks Mike!

Though I'm still sort of confused. None of the GRASP code was developed on
the 64-bit platform. So when I run mkpkg to generate the binaries, is
there a way to trick the compiler into compiling 32-bit binaries?

The binaries I generated on my 32-bit platform seem to work fine on the
64-bit platform.

Trina

On Mon, 19 Sep 2005, Mike Fitzpatrick wrote:

> Hi Trina,
> 64-bit compilation is not supported by IRAF and won't likely be
> anytime soon given NOAO's decision to "scale back" its IRAF work. The
> 32-bit compiled binaries will run on some 64-bit hardware but won't take
> full advantage of the machine or address space, but it means you can
> develop on a 32-bit machine and move the package when done.
>
> -Mike
>

--
--
___________________________________________________________
Katrina Gressett
NSO/GONG -- Data Reduction Specialist
gressett@noao.edu
520.318.8568
___________________________________________________________


>From fitz@tucana.tuc.noao.edu Mon Sep 19 12:47:07 2005
Date: Mon, 19 Sep 2005 12:46:56 -0700 (MST)
From: Mike Fitzpatrick <fitz@tucana.tuc.noao.edu>
To: Katrina Gressett <gressett@noao.edu>
Subject: Re: 64 bit compiling problems with IRAF and GRASP


Trina,
GCC does have a "-m32" flag to produce 32-bit binaries which
you can enable by defining

setenv XC_CFLAGS "-m32"
setenv XC_FFLAGS "-m32"

However there is no guarantee this will work, you're better off compiling
on a 32-bit machine.


-Mike



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