diff --git a/cmake/Modules/Platform/Emscripten.cmake b/cmake/Modules/Platform/Emscripten.cmake
index 1fa0878b21854..d2c413176f2e3 100644
--- a/cmake/Modules/Platform/Emscripten.cmake
+++ b/cmake/Modules/Platform/Emscripten.cmake
@@ -258,3 +258,14 @@ if ("${CMAKE_GENERATOR}" MATCHES "^Visual Studio.*")
 	set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} ${EMSCRIPTEN_VS_LINKER_FLAGS}" CACHE STRING "")
 	set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS} ${EMSCRIPTEN_VS_LINKER_FLAGS}" CACHE STRING "")
 endif()
+
+if (NOT DEFINED CMAKE_CROSSCOMPILING_EMULATOR)
+  find_program(NODE_JS_EXECUTABLE NAMES nodejs node)
+  if(NODE_JS_EXECUTABLE)
+    set(CMAKE_CROSSCOMPILING_EMULATOR "${NODE_JS_EXECUTABLE}" CACHE FILEPATH "Path to the emulator for the target system.")
+  endif()
+endif()
+# No-op on CMAKE_CROSSCOMPILING_EMULATOR so older versions of cmake do not
+# complain about unused CMake variable.
+if(CMAKE_CROSSCOMPILING_EMULATOR)
+endif()
diff --git a/emcmake b/emcmake
index 8a672eeb7e839..7bea9e8d0e313 100755
--- a/emcmake
+++ b/emcmake
@@ -4,5 +4,6 @@ import os, subprocess, sys
 from tools import shared
 
 configure_path = shared.path_from_root('emconfigure')
-exit(subprocess.call([shared.PYTHON, configure_path] + sys.argv[1:]))
-
+exit(subprocess.call([shared.PYTHON, configure_path] + \
+                     sys.argv[1] + \
+                     ['-DCMAKE_CROSSCOMPILING_EMULATOR=' + shared.NODE_JS] + sys.argv[2:]))