[stabbles]

LD_PRELOAD is too global to be useful, it's hard to scope it to one process (and not child processes). macOS is better in the sense that it clears DYLD_* variables when the dynamic linker has done its work and the process starts. (Although that can also be painful when you want to run a shell script and set DYLD_* outside)

[nly]

You can compile binaries with additional relative library paths in to them that will take priority over /usr/lib64

[josephg]

How? Maybe this should be better documented & recommended. I suppose at some point you're just statically linking with more steps - though for a problem like this it might be worth it.

[xioxox]

See the ELF rpath, which can be set by the linker. This can be modified after using patchelf.

[yrro]

https://sourceware.org/binutils/docs-2.40/ld/Options.html#in...

[ywei3410]

The other comments have already covered the how, but I'd like to add that the mechanism used extensively in Nix [1].

[1] https://nixos.org/

[rkeene2]

$ORIGIN has been pretty well-known and documented for a very long time

[ungamedplayer]

You can set it in the environment for a single process.