Simplify MaxCtrl version extraction

Instead of using the correct version in in-source builds, a dummy file is
copied in place. This removes the need to explicitly include the
VERSION.cmake file.

maxctrl/CMakeLists.txt

@@ -4,7 +4,7 @@ if (BUILD_MAXCTRL)
 
   if (NPM_FOUND AND NODEJS_FOUND AND NODEJS_VERSION VERSION_GREATER "6.0.0")
 
-    include(configure_version.cmake)
+    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/lib/version.js.in ${CMAKE_CURRENT_BINARY_DIR}/lib/version.js @ONLY)
 
     add_custom_command(OUTPUT ${CMAKE_BINARY_DIR}/maxctrl/maxctrl
       COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/build.sh ${CMAKE_SOURCE_DIR}

maxctrl/configure_version.cmake

@@ -1,2 +0,0 @@
-include(../VERSION.cmake)
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/lib/version.js.in ${CMAKE_CURRENT_BINARY_DIR}/lib/version.js @ONLY)

maxctrl/package.json

@@ -6,7 +6,7 @@
   "main": "maxctrl.js",
   "scripts": {
     "test": "nyc mocha --timeout 15000 --slow 10000",
-    "preinstall": "cmake -P configure_version.cmake"
+    "preinstall": "test -f lib/version.js || cp lib/version.js.in lib/version.js"
   },
   "keywords": [
     "maxscale"