Index: llvm/cmake/modules/AddLLVM.cmake
===================================================================
--- llvm/cmake/modules/AddLLVM.cmake
+++ llvm/cmake/modules/AddLLVM.cmake
@@ -1610,6 +1610,11 @@
     endif()
   endif()
 
+  set(LLVM_UNITTEST_LINK_FLAGS "" CACHE STRING
+      "Additional linker flags for unit tests")
+  set_property(TARGET ${test_name} APPEND_STRING PROPERTY
+               LINK_FLAGS " ${LLVM_UNITTEST_LINK_FLAGS}")
+
   set(outdir ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR})
   set_output_directory(${test_name} BINARY_DIR ${outdir} LIBRARY_DIR ${outdir})
   # libpthreads overrides some standard library symbols, so main