[fpc-pascal] libc error on older Linux

[Rainer Stratmann]

> What kind of application is that - is it a Lazarus (GUI) application, or
> you just use Lazarus as your IDE? Is it a multi-threaded application?
> 
> Tomas

No GUI on more than 100 Computers (except on the compiling Computer, which 
runs fine), I use the Framebuffer to set the Pixel directly. 800 x 600 Pixel 
Screen.
No multi-threaded application.
Just use Lazarus as the IDE.

On the compiling Computer on KDE the 800 x 600 screen is copied frequently 
into an X Window. There the X Libraries are load at runtime dynamically. It 
runs all fine.

When there is no KDE (more than 100 computers outside) then there is a simple, 
plain Linux without any GUI.

I use the openssl and libcrypto library load at runtime dynamically.
I think that should be ok and has nothing to do with this issue.

Compiled on Debian 13 in a KDE environment, runs fine.
Debian 13 (without KDE) runs fine
Debian 11 (without KDE) does not work as already described.
Debian 12 (without KDE) works.

Can I put an older libc.so.6 somewhere and say fpc that it should use that 
library for compiling?