jcelerier

> Due to IP reasons, this can't ship as code, so we need to ship binaries. How do you do that?

I build on an distro with an old enough glibc following this table: https://gist.github.com/wagenet/35adca1a032cec2999d47b6c40aa... (right now rockylinux:8 which is equivalent to centos:8 and good enough for debian stable and anything more recent than that ; last year I was still on centos:7), use dlopen as much as possible instead of "normal" linking and then it works on the more recent ones without issues.

kelnos
If what you're doing works for you, great, but in case it stops working at some point (or if for some reason you need to build on a current-gen distro version), you could also consider using this:

https://github.com/wheybags/glibc_version_header

It's a set of autogenerated headers that use symbol aliasing to allow you to build against your current version of glibc, but link to the proper older versioned symbols such that it will run on whatever oldest version of glibc you select.