Index: cmake/config-ix.cmake
===================================================================
--- cmake/config-ix.cmake
+++ cmake/config-ix.cmake
@@ -166,7 +166,6 @@
         else()
           include_directories(${LIBXML2_INCLUDE_DIR})
         endif()
-        set(LIBXML2_LIBS "xml2")
       endif()
     endif()
   endif()
Index: lib/WindowsManifest/CMakeLists.txt
===================================================================
--- lib/WindowsManifest/CMakeLists.txt
+++ lib/WindowsManifest/CMakeLists.txt
@@ -1,10 +1,3 @@
-set(system_libs)
-if( CMAKE_HOST_UNIX )
-  if( LLVM_LIBXML2_ENABLED )
-    set(system_libs ${system_libs} ${LIBXML2_LIBS})
-  endif()
-endif()
-
 add_llvm_library(LLVMWindowsManifest
   WindowsManifestMerger.cpp
 
@@ -12,7 +5,7 @@
   ${LLVM_MAIN_INCLUDE_DIR}/llvm/WindowsManifest
   ${Backtrace_INCLUDE_DIRS}
 
-  LINK_LIBS ${system_libs}
+  LINK_LIBS ${LIBXML2_LIBRARIES}
   )
-
-set_property(TARGET LLVMWindowsManifest PROPERTY LLVM_SYSTEM_LIBS "${system_libs}")
+set_target_properties(LLVMWindowsManifest PROPERTIES
+  LLVM_SYSTEM_LIBS ${LIBXML2_LIBRARIES})