Index: llvm-toolchain-11-11.0.0/lld/tools/lld/CMakeLists.txt
===================================================================
--- llvm-toolchain-11-11.0.0.orig/lld/tools/lld/CMakeLists.txt
+++ llvm-toolchain-11-11.0.0/lld/tools/lld/CMakeLists.txt
@@ -2,9 +2,14 @@ set(LLVM_LINK_COMPONENTS
   Support
   )
 
+if(CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "i386" OR
+   CMAKE_HOST_SYSTEM_PROCESSOR MATCHES "i686")
+  list(APPEND LLD_ATOMIC_LIB "atomic")
+endif()
+
 add_lld_tool(lld
   lld.cpp
-
+  ${LLD_ATOMIC_LIB}
   SUPPORT_PLUGINS
   )
 export_executable_symbols_for_plugins(lld)