[clang] [Clang][CMake] Fix libclang.dylib not relinking when libclang.map changes (PR #189698)

[Ryan Mansfield via cfe-commits]

https://github.com/rjmansfield created https://github.com/llvm/llvm-project/pull/189698

None

>From ae93a4f16103a9970fc42f17700914aebed84f04 Mon Sep 17 00:00:00 2001
From: Ryan Mansfield <ryan_mansfield at apple.com>
Date: Tue, 31 Mar 2026 11:49:18 -0400
Subject: [PATCH] [Clang][CMake] Fix libclang.dylib not relinking when
 libclang.map changes

---
 clang/tools/libclang/CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/clang/tools/libclang/CMakeLists.txt b/clang/tools/libclang/CMakeLists.txt
index 09322a424f488..71125f87a04b9 100644
--- a/clang/tools/libclang/CMakeLists.txt
+++ b/clang/tools/libclang/CMakeLists.txt
@@ -175,6 +175,10 @@ if(ENABLE_SHARED)
 
     set_property(TARGET libclang APPEND_STRING PROPERTY
                  LINK_FLAGS ${LIBCLANG_LINK_FLAGS})
+    # Ensure libclang.dylib is relinked when the exports file changes.
+    if (LLVM_EXPORTED_SYMBOL_FILE)
+      set_target_properties(libclang PROPERTIES LINK_DEPENDS ${LLVM_EXPORTED_SYMBOL_FILE})
+    endif()
   else()
     set_target_properties(libclang
       PROPERTIES