if you really want a single elf that could link to system libraries with a foreign libc (you shouldn't), the somehow correct-ish way to do it is map your prefer

if you really want a single elf that could link to system libraries with a foreign libc (you shouldn't), the somehow correct-ish way to do it is map your preferred ldso manually , setup stack, call DT_ENTRY etc etc like how kernel does it, and just yank the libdl symbols. see cosmo_dlopen for an example implementation.