2

I want to run a C++ program on an older device, which only supports glibc 2.11.3. So I have to create a develloping enviroment using the same glibc version.

Currently it is running version 2.25 x86_64 for openSUSE Tumbleweed.

First of all, where do I find a valid *.rpm file of the old version. Also is it possible to install it?

Trying to unistall glibc tells me that will crash the operation system. :-)

Thank you all for your support.

Ulf
  • 73
  • 12
  • 1
    Look for instructions on setting up a chroot environment for that version. A chroot is a completely independent set of user-space programs and libraries in which programs can run independent of your main system. You could do this with a cross-compiler, but I've always found a chroot to be easier to set up. – Dark Falcon Aug 07 '17 at 13:29
  • You should not downgrade your system libc. Instead, install the older version in a seperate directory tree, and develop against that. It's not too difficult to compile glibc from source so I would suggest doing that. – davmac Aug 07 '17 at 13:29
  • 1
    glibc 2.11.3 comes with OpenSUSE 11.4. You can get the distribution iso and individual rpms from [gwdg.de (University of Goettingen Computing Centre)](https://ftp5.gwdg.de/pub/opensuse/discontinued/distribution/11.4/) – Dima Chubarov Aug 07 '17 at 13:49
  • @DarkFalcon you wouldn't need to go as far as using a cross-compiler for this case, I think. It should just be a matter of linking against the older libc. – davmac Aug 07 '17 at 14:07

2 Answers2

2

Changing the system glibc will almost certainly result in a disaster. I think you have 2 solutions: multiple glibc on one system or link glibc statically

Graziano Panzera
  • 96
  • 1
  • 5
  • The first question you link is about running a program against another versions of libc; this question is about linking to one, IIUC. It's actually quite a different problem. – davmac Aug 07 '17 at 14:06
2

Trying to unistall glibc tells me that will crash the operation system. :-)

I don't understand your smiley.

It will render your system unbootable, yes.

What you want to do is best achieved in one of several ways:

  1. Create a Linux-to-older-Linux cross-compiler
  2. Create a "older Linux" chroot environment (ChromeOS uses this approach)
  3. Create a "older Linux" virtual machine, and develop inside of it.

Approach 2 is likely easiest to set up, closely followed by approach 3.

Approach 1 gives you the best build performance, but requires thorough understanding of how to build cross-compilers.

Employed Russian
  • 199,314
  • 34
  • 295
  • 362