[CentOS] Compile for C6 / glibc

Tue Aug 25 23:20:56 UTC 2015
Leon Fauster <leonfauster at googlemail.com>

Am 26.08.2015 um 01:04 schrieb Johnny Hughes <johnny at centos.org>:
> On 08/25/2015 05:48 PM, Leon Fauster wrote:
>> Am 25.08.2015 um 19:17 schrieb Nicolas Thierry-Mieg <Nicolas.Thierry-Mieg at imag.fr>:
>>> On 08/25/2015 07:11 PM, Leon Fauster wrote:
>>> So the easiest solution would be that the vendor (2)
>>> build the software on a C6 system. Most likely it will
>>> compile fine, and the produced binary will run on C6 as
>>> well as more recent distributions.
>> sure, thats always possible but exist there some backward 
>> compatibility switch when compiling against a newer glibc?
> No, not really.  When you compile a program it LINKS against the
> standard c or c++ library.  You have to run it on a c library that has
> all the features / functions .. that is WHY it puts the version in.
> If you want it to work on CentOS, it needs to be compiled on CentOS ..
> pretty simple.
> There does EXIST a compat-glibc (or compat-gcc) to run OLDER stuff (ie
> things for CentOS-6) on a newer distro (ie CentOS-7).  But those side
> load an older version of the libraries for use on the new system.
> Technically, if they used the older version of glibc/gcc (and any other
> required library links) on ubuntu, you can make things work, but it
> would be easier to compile the software on the platform where it is
> intended to work.

yep, thats the so called backward compatibility 


okay, thanks for the input. I will try to convince the vendor.