[Opengrads-devel] Binary portability: glibc version

[Arlindo da S. <da...@al...>]

All,

  See below in yellow my comment to a user regarding glibc and binary
portability.

       Arlindo

---------- Forwarded message ----------
From: Arlindo da Silva <da...@al...>
Date: Thu, Jul 15, 2010 at 9:38 AM
Subject: Re: [gradsusr] OpenGrADS Bundle 2.0.a8 Released!
To: GrADS Users Forum <gra...@gr...>


On Thu, Jul 15, 2010 at 8:06 AM, Earnshaw, Paul <
pau...@me...> wrote:

>  Arlindo,
>
> frpe@eld188:> uname -a
> Linux eld188 2.6.9-89.ELsmp #1 SMP Mon Apr 20 10:34:33 EDT 2009 i686 i686
> i386 GNU/Linux
> frpe@eld188:> gcc --version
> gcc (GCC) 3.4.6 20060404 (Red Hat 3.4.6-11)
> Copyright (C) 2006 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> frpe@eld188:> ldd --version
> ldd (GNU libc) 2.3.4
>
> I have since run the executable on a different machine and I get a more
> obvious error message associated with the information you wanted:
>
> /net/home/h01/gmdd/grads2/Contents/Linux/Versions/2.0.a8.oga.1/i686/grads:
> error while loading shared libraries: requires glibc 2.5 or later dynamic
> linker
>
>

That is exactly it. You will get the same error if you try COLA's i686 build
which was also uses glibc 2.5. Up to now I had been building the i686
version of the OpenGrADS Bundle on a machine with glibc 2.3.4 as yours.
However, I hit a problem with 2.0.a8 version of gribmap using this version
of glibc. In the end I had to build it on a newer machine with glibc 2.5.

For the record: for binary portability, more important than the particular
version of gcc is the version of glibc. In this particular case, I rebuilt
grads with gcc 4.1.2 and glibc 2.3.4 and I could not get gribmap to work. On
Linux, you can find the glibc version with "ldd --version". In the future
perhaps we should have the glibc version as part of the binary tarball
filename (at least on Linux).



> I take it this means with the current version of glibc I will not be able
> to run 2.0.a8.oga.1?
>
>

Almost.  I have a build of grads 2.0.a8 on i686 using glibc 2.3.4; it passes
all of my tests (including extensions but not the large grib feature) except
for gribmap. If can make it it available to you offline, but I'd rather not
post it on sf.net because it is not 100% functional. If you do not need the
new large file feature of gribmap you could mix & match and use the
2.0.a7.oga.3 version of gribmap and everything else from 2.0.a8. If
interested,  write to me at da...@op... and I'll make this build
available to you.

   Arlindo



-- 
Arlindo da Silva
da...@al...



-- 
Arlindo da Silva
da...@al...