[clang] [CMake][PGO] Add libunwind to list of stage1 runtimes (PR #78869)

[Tom Stellard via cfe-commits]

https://github.com/tstellar created https://github.com/llvm/llvm-project/pull/78869

This fixes the build since 8f90e6937a1fac80873bb2dab5f382c82ba1ba4e which made libcxxabi use llvm's libunwind by default.

>From 0719f49ecc6dd69ae4698c3e84dbf175a1bf2ed3 Mon Sep 17 00:00:00 2001
From: Tom Stellard <tstellar at redhat.com>
Date: Sun, 21 Jan 2024 00:25:47 +0000
Subject: [PATCH] [CMake][PGO] Add libunwind to list of stage1 runtimes

This fixes the build since 8f90e6937a1fac80873bb2dab5f382c82ba1ba4e
which made libcxxabi use llvm's libunwind by default.
---
 clang/cmake/caches/PGO.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/cmake/caches/PGO.cmake b/clang/cmake/caches/PGO.cmake
index e1d0585e453f82..15bc755d110d19 100644
--- a/clang/cmake/caches/PGO.cmake
+++ b/clang/cmake/caches/PGO.cmake
@@ -2,7 +2,7 @@ set(CMAKE_BUILD_TYPE RELEASE CACHE STRING "")
 set(CLANG_ENABLE_BOOTSTRAP ON CACHE BOOL "")
 
 set(LLVM_ENABLE_PROJECTS "clang;lld" CACHE STRING "")
-set(LLVM_ENABLE_RUNTIMES "compiler-rt;libcxx;libcxxabi" CACHE STRING "")
+set(LLVM_ENABLE_RUNTIMES "compiler-rt;libcxx;libcxxabi;libunwind" CACHE STRING "")
 
 set(LLVM_TARGETS_TO_BUILD Native CACHE STRING "")
 set(BOOTSTRAP_LLVM_BUILD_INSTRUMENTED ON CACHE BOOL "")