Dear Kay,

do you use devtoolset (Red Hat Developer Toolset)? It's a set of
relatively new tools and compilers, up to GCC 12, for RHEL7. It might
be the best solution unless you need GCC 13+.

Marcin

On Wed, Mar 26, 2025 at 6:18 PM Kay Diederichs
<kay.diederi...@uni-konstanz.de> wrote:
>
> Dear all,
>
> when compiling XDS or any other software distributed as binaries, the 
> question comes up whether it will be compatible with the users' operating 
> system.
> For Linux, the main stumbling point is the GLIBC version: a binary compiled 
> on a relatively new distribution (like Redhat Enterprise Linux 9 or Ubuntu 
> 22.04) will not work on older distributions (like Redhat Enterprise Linux 8 
> or 7, or Ubuntu 20.04 or 18.04) because it needs "symbols" from the newer 
> GLIBC library.
> Whereas users with single or a few machines can typically upgrade with 
> reasonable effort to newer distributions (e.g. from Ubuntu 20 to 22 or 24), 
> some sites with many machines (e.g. synchrotrons) may be stuck with old Linux 
> distributions, assuming/hoping that these do not pose security risks due to 
> strict firewalls or other measures.
> Therefore, developers tend to use machines with old distributions when 
> preparing their binaries for public consumption. The downside of this is that 
> new compilers and their features are often not available for these old 
> distributions.
>
> Since for XDS development we want to use new compiler versions, my question 
> is: is there any site still using Redhat Enterprise Linux 7 (or the 
> equivalent CentOS7) or Debian 9 or Ubuntu 18? Those sites that have not 
> upgraded their machines are at risk not being able to use XDS in the future. 
> Please get in touch with me.
>
> Any site with Redhat-8-compatible distribution or Ubuntu 20 or Debian 10 (or 
> specifically, GLIBC 2.28 and newer) should be good for now.
>
> Thank you,
> Kay
>
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