diff --git a/llvm/tools/llvm-mt/CMakeLists.txt b/llvm/tools/llvm-mt/CMakeLists.txt
--- a/llvm/tools/llvm-mt/CMakeLists.txt
+++ b/llvm/tools/llvm-mt/CMakeLists.txt
@@ -1,7 +1,12 @@
 set(LLVM_LINK_COMPONENTS
+  # Put WindowsManifest before Support, so that their library
+  # dependencies will be usefully ordered. (Support will pull in zlib;
+  # WindowsManifest is likely to pull in libxml2, which will need
+  # symbols from zlib; to satisfy Unix search-once link semantics,
+  # we'd like libxml2 to already be on the list before zlib is added.)
+  WindowsManifest
   Option
   Support
-  WindowsManifest
   )
 
 set(LLVM_TARGET_DEFINITIONS Opts.td)