From 012284162613e4227042ea27d8426c119dad64a0 Mon Sep 17 00:00:00 2001
From: Oscar Fuentes <ofv@wanadoo.es>
Date: Fri, 11 Mar 2011 18:27:13 +0000
Subject: [PATCH] Force re-linking of LLVMgold.so when its exports file
 changes.

llvm-svn: 127473
---
 llvm/tools/gold/CMakeLists.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/llvm/tools/gold/CMakeLists.txt b/llvm/tools/gold/CMakeLists.txt
index 15ca8d7f8f6f..d8633e6e47b1 100644
--- a/llvm/tools/gold/CMakeLists.txt
+++ b/llvm/tools/gold/CMakeLists.txt
@@ -32,6 +32,12 @@ else()
   set_property(DIRECTORY APPEND
     PROPERTY ADDITIONAL_MAKE_CLEAN_FILES exportsfile)
 
+  # Force re-linking when the exports file changes. Actually, it
+  # forces recompilation of gold-plugin.cpp. The LINK_DEPENDS target
+  # property only works for makefile-based generators.
+  set_property(SOURCE gold-plugin.cpp APPEND PROPERTY
+    OBJECT_DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/exportsfile)
+
   target_link_libraries(LLVMgold LTO -Wl,--version-script,exportsfile)
   add_dependencies(LLVMgold gold_exports)
 endif()