diff --git a/llvm/cmake/modules/CrossCompile.cmake b/llvm/cmake/modules/CrossCompile.cmake
--- a/llvm/cmake/modules/CrossCompile.cmake
+++ b/llvm/cmake/modules/CrossCompile.cmake
@@ -103,6 +103,7 @@
   else()
     set(output_path "${${PROJECT_NAME}_NATIVE_BUILD}/bin/${target}")
   endif()
+  set(output_path ${output_path}${CMAKE_EXECUTABLE_SUFFIX})
 
   llvm_ExternalProject_BuildCmd(build_cmd ${target} ${${PROJECT_NAME}_NATIVE_BUILD}
                                 CONFIGURATION Release)