From 08d92de3f4f7ea76ca9c4d857a74e8a362fb3a15 Mon Sep 17 00:00:00 2001
From: Chris Bieneman <beanz@apple.com>
Date: Fri, 5 Feb 2016 02:51:33 +0000
Subject: [PATCH] [CMake] Speculative fix for linker error on Linux

I can't reproduce this locally, but I think this may fix it.

llvm-svn: 259870
---
 clang/CMakeLists.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/clang/CMakeLists.txt b/clang/CMakeLists.txt
index d7a498d..514cea1 100644
--- a/clang/CMakeLists.txt
+++ b/clang/CMakeLists.txt
@@ -595,8 +595,8 @@ endif()
 set(CLANG_ORDER_FILE ${CMAKE_CURRENT_BINARY_DIR}/clang.order CACHE FILEPATH
   "Order file to use when compiling clang in order to improve startup time.")
 
-if(NOT EXISTS ${CLANG_ORDER_FILE})
-  execute_process(COMMAND ${CMAKE_COMMAND} -E touch ${CLANG_ORDER_FILE})
+if(CLANG_ORDER_FILE AND NOT EXISTS ${CLANG_ORDER_FILE})
+  file(WRITE ${CLANG_ORDER_FILE} "\n")
 endif()
 
 if (CLANG_BUILT_STANDALONE OR CMAKE_VERSION VERSION_EQUAL 3 OR
-- 
2.7.4