Code style fix and comment addition

src/SPC/command/BuildCliCommand.php

@@ -147,7 +147,7 @@ class BuildCliCommand extends BuildCommand
             $builder->proveExts($extensions);
             // validate libs and exts
             $builder->validateLibsAndExts();
-            // build libraries
+            // build or install libraries
             $builder->setupLibs();
 
             if ($this->input->getOption('with-clean')) {