Code: Resolves symbolic link.

On Windows, process.execPath does not
get resolved symlink path. This commit
fixes the issue.

Related Issue: nodejs/node#851.
PR URL: sass#668.

lib/extensions.js

@@ -1,18 +1,26 @@
 var semver = require('semver'),
-    runtimeVersion = semver.parse(process.version);
+    runtimeVersion = semver.parse(process.version),
+    fs = require('fs');
 
 /**
- * Get Runtime Name
+ * Get Runtime Info
  *
  * @api private
  */
 
-function getRuntimeName() {
-  var runtime = process.execPath
+function getRuntimeInfo() {
+  var execPath = fs.realpathSync(process.execPath); // resolve symbolic link
+
+  var runtime = execPath
                .split(/[\\/]+/).pop()
                .split('.').shift();
 
-  return runtime === 'nodejs' ? 'node' : runtime;
+  runtime = runtime === 'nodejs' ? 'node' : runtime;
+
+  return {
+    name: name,
+    execPath: execPath
+  };
 }
 
 /**
@@ -24,10 +32,10 @@ function getRuntimeName() {
 function getBinaryIdentifiableName() {
   return [process.platform, '-',
           process.arch, '-',
-          getRuntimeName(), '-',
+          process.runtime.name, '-',
           runtimeVersion.major, '.',
           runtimeVersion.minor].join('');
 }
 
-process.runtime = getRuntimeName();
+process.runtime = getRuntimeInfo();
 process.sassBinaryName = getBinaryIdentifiableName();

scripts/build.js

@@ -50,7 +50,11 @@ function afterBuild(options) {
  */
 
 function build(options) {
-  var proc = spawn(process.execPath, ['node_modules/pangyp/bin/node-gyp', 'rebuild'].concat(options.args), {
+  var arguments = ['node_modules/pangyp/bin/node-gyp', 'rebuild'].concat(options.args);
+
+  console.log(['Building:', process.runtime.execPath].concat(arguments).join(' '));
+
+  var proc = spawn(process.runtime.execPath, arguments, {
     stdio: [0, 1, 2]
   });