Has MACOSX_DEPLOYMENT_TARGET been deprecated? I do not seem to find any proper documentation of it at apple.com. Background: I'm building C-based application(s) and libraries (both Intel and AS) that are distributed compiled/linked to our users. I would like to update my build machines from 10.15 (Intel) and 11 (AS), to macOS 12 (or even higher, if possible) but I would like to be sure that our users can run the executable and that they can link their code against our libraries (and our object code) also on older versions of macOS. Ideally I would like to continue to support users on macOS 10.15 on Intel and 11 on AS, but macOS 11 on Intel would also be acceptable. It seems MACOSX_DEPLOYMENT_TARGET (perhaps combined with SDKROOT) could allow this, but I have not been able to find anything except rumors, i.e. no proper documentation at any Apple site. Testing is not really an option since at least some problems would likely only occur at runtime (e.g. due to weak linking). I am using the command line tools and GNU make (no Xcode project or some such, also no App Store). Any pointers would be greatly appreciated!