[all-commits] [llvm/llvm-project] b1864a: [lld-macho] Ignore duplicate `-rpath` entries (#99...

[Daniel Bertalan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: b1864a8d6ab8bfd346922e36d80e684a4eaf3248
      https://github.com/llvm/llvm-project/commit/b1864a8d6ab8bfd346922e36d80e684a4eaf3248
  Author: Daniel Bertalan <dani at danielbertalan.dev>
  Date:   2024-07-18 (Thu, 18 Jul 2024)

  Changed paths:
    M lld/MachO/Config.h
    M lld/MachO/Driver.cpp
    M lld/MachO/Options.td
    M lld/test/MachO/link-search-at-rpath.s
    M lld/test/MachO/rpath.s

  Log Message:
  -----------
  [lld-macho] Ignore duplicate `-rpath` entries (#99289)

Starting with Xcode 16 (dyld-1122), Apple's binary utilities, e.g.
`dyld_info` (but not dyld itself), will refuse to load binaries built
against the macOS 15 SDK or newer that contain the same `LC_RPATH`
entry multiple times:

https://github.com/apple-oss-distributions/dyld/blob/rel/dyld-1122/mach_o/Policy.cpp#L246-L249

`ld-prime` deduplicates entries (regardless of the deployment target),
we now do the same. We also match `ld-prime`'s and `ld64`'s behavior by
warning on duplicate `-rpath` arguments. This can be disabled by the
LLD-specific `--no-warn-duplicate-rpath` flag.



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