The commit 22b7b84860d39da71964c9b329937f2ee1d875ba
made the symbols provided by shared libraries "defined",
and thus effectively made it impossible to generate non-pie
dynamically linked executables using
--unresolved-symbols=import-dynamic.
This commit, based on https://github.com/llvm/llvm-project/pull/109249,
fixes it by checking sym->isShared() explictly.
(as a bonus, you don't need to rely on
--unresolved-symbols=import-dynamic
anymore.)
Fixes https://github.com/llvm/llvm-project/issues/107387
9df375e5ea