build: add node_module_version to config.gypi

Enable targetting of a different node version than the currently running one when building binary modules. Based on 410296c37 PR-URL: #8171 Ref: #8027 Ref: #7808 Ref: nodejs/node-gyp#855 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: James M Snell <[email protected]> Reviewed-By: Anna Henningsen <[email protected]>
nodejs · bmeck · Jul 5, 2016 · May 11, 2016 · Jul 20, 2016 · Aug 8, 2016
commit a0a1de1fbec3fd59e0d20b2b12df50daf8eda3ee
diff --git a/configure b/configure
@@ -769,6 +769,8 @@ def configure_node(o):
   if options.enable_static:
     o['variables']['node_target_type'] = 'static_library'
 
+  o['variables']['node_module_version'] = 46
+
   if options.linked_module:
     o['variables']['library_files'] = options.linked_module
 

diff --git a/node.gyp b/node.gyp
@@ -15,6 +15,7 @@
     'node_enable_v8_vtunejit%': 'false',
     'node_target_type%': 'executable',
     'node_core_target_name%': 'node',
+    'node_module_version%': '',
     'library_files': [
       'src/node.js',
       'lib/_debug_agent.js',

diff --git a/test/parallel/test-module-version.js b/test/parallel/test-module-version.js
@@ -0,0 +1,10 @@
+'use strict';
+require('../common');
+const assert = require('assert');
+
+// Check for existence
+assert(process.config.variables.hasOwnProperty('node_module_version'));
+
+// Ensure that `node_module_version` is an Integer
+assert(!Number.isNaN(parseInt(process.config.variables.node_module_version)));
+assert.strictEqual(process.config.variables.node_module_version, 46);