[CMake] One more try to fix this.

This change will catch any bots that generated the order file that GNU ld doesn't like and delete it before trying to generate one that I think GNU ld will deal with.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@259871 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 514cea16ff9eb8d92ab4b76603a22327dfa2b8e3..bdd0ec9124014c68f847daec55d8374797ea5be1 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -595,6 +595,11 @@ 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.")
 
+file(READ ${CLANG_ORDER_FILE} order_file 20)
+if(order_file STREQUAL "")
+  file(REMOVE ${CLANG_ORDER_FILE})
+endif()
+
 if(CLANG_ORDER_FILE AND NOT EXISTS ${CLANG_ORDER_FILE})
   file(WRITE ${CLANG_ORDER_FILE} "\n")
 endif()