[all-commits] [llvm/llvm-project] 64c0bd: [compiler-rt] Check for and use -lunwind when link...

[Martin Storsjö via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 64c0bddb7639dd4bfad73fbbc909ca739b84aa10
      https://github.com/llvm/llvm-project/commit/64c0bddb7639dd4bfad73fbbc909ca739b84aa10
  Author: Martin Storsjö <martin at martin.st>
  Date:   2023-09-15 (Fri, 15 Sep 2023)

  Changed paths:
    M compiler-rt/cmake/config-ix.cmake

  Log Message:
  -----------
  [compiler-rt] Check for and use -lunwind when linking with -nodefaultlibs (#65912)

If libc++ is available and should be used as the ubsan C++ ABI library,
the check for libc++ might fail if libc++ is a static library, as the
-nodefaultlibs flag inhibits a potential compiler default -lunwind.

Just like the -nodefaultlibs configuration tests for and manually adds a
bunch of compiler default libraries, look for -lunwind too.