Object: Add ELF support.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123896 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Object/CMakeLists.txt b/lib/Object/CMakeLists.txt
index 9a6451c..6a6814f 100644
--- a/lib/Object/CMakeLists.txt
+++ b/lib/Object/CMakeLists.txt
@@ -2,4 +2,5 @@
   MachOObject.cpp
   ObjectFile.cpp
   COFFObjectFile.cpp
+  ELFObjectFile.cpp
   )