Fwd: Compiling pgm for an older linux version - cross compiler

[Jacques Greindl]

Hi !

This is probably a newby question but I can't find the anwser ...

I have 2 files : a.new & a.old
a.new : compiled today
a.old : compiled some years ago, on another system

jack@cixci:/$ file a.new
a.new: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV),
dynamically linked (uses shared libs), for GNU/Linux 2.6.15, not
stripped
jack@cixci:/$ file a.old
a.old: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV),
dynamically linked (uses shared libs), for GNU/Linux 2.0.0, not
stripped

Is there a way to build again the same "a.old" --> on my actual
system, build the program for the old system ?

Thanks for your help,

Jack