MXS-1300: Add check for Node.js version

The Node.js version is checked before MaxCtrl is built.

cmake/FindNodeJS.cmake

@@ -0,0 +1,22 @@
+# Find the Node.js executable
+#
+# The following variables are set:
+# NODEJS_FOUND      True if Node.js was found
+# NODEJS_EXECUTABLE Path to the Node.js executable
+# NODEJS_VERSION    Node.js version
+
+find_program(NODEJS_EXECUTABLE node)
+
+if (${NODEJS_EXECUTABLE} MATCHES "NOTFOUND")
+  message(STATUS "Could not find Node.js")
+  set(NODEJS_FOUND FALSE CACHE INTERNAL "")
+  unset(NODEJS_EXECUTABLE)
+else()
+  execute_process(COMMAND ${NODEJS_EXECUTABLE} --version
+    OUTPUT_VARIABLE VERSION_VAR)
+  string(REGEX REPLACE "[v]" "" VERSION_VAR ${VERSION_VAR})
+  string(STRIP ${VERSION_VAR} VERSION_VAR)
+  set(NODEJS_VERSION ${VERSION_VAR} CACHE INTERNAL "")
+  set(NODEJS_FOUND TRUE CACHE INTERNAL "")
+  message(STATUS "Found Node.js version ${NODEJS_VERSION}: ${NODEJS_EXECUTABLE}")
+endif()