Preloading dynamically loaded libraries in linux

Question

I have a 7 year old game that a friend built & I have very little of the source code left. It works perfect on CentOS 4.8 and below, so I'm thinkin' it's a TLS error. I transfered a new folder with all the CentOS 4.8 libraries the program called to the new one... I'm trying to load the old libraries it called for in ldd specifically to that program,. This is what I'm trying:

LD_PRELOAD="/glibs/ld-linux.so.2 /glibs/libc.so.6 /glibs/libgcc_s.so.1 /glibs/libm.so.6 /glibs/libpthread.so.0 /glibs/libstdc++.so.5 /glibs/libz.so.1 /glibs/libxml2.so.2" /home/g/gameserver

I keep getting a Segmentation Fault error, does anyone know why? Maybe I don't fully understand what LD_PRELOAD does or something. How would I be able to load old libraries without messing up the originals? Thanks in advance!

Answer 1

LD_PRELOAD is more used to override a functionality in a library before the normal ones get used (e.g. custom malloc, socksify all sockets etc). What you probably need is to put all your old libraries into their own directory and then set LD_LIBRARY_PATH so that it attempts to find the library first in this directory.