title: How to change kernel version string with Buildroot
body: <p>Is there some way in Buildroot to change the kernel version string displayed with the "uname -a" command?  For example:</p>
  
  <pre><code># uname -a
  Linux buildroot 5.1.0 #1 PREEMPT Wed Nov 6 13:10:04 MST 2019 armv5tejl GNU/Linux
  </code></pre>
  
  <p>I would like to append something so the version look like: "5.1.0-xxxx-xx".</p>
  
  <p>I check <a href="https://stackoverflow.com/questions/12910969/buildroot-how-to-change-kernel-version-string">this</a> post but it doesn't make sense to me.  Which .config file does it refer to?  I see 4 in my Buildroot directory, the default one at the root and three more under "./output", which come from other repos.</p>
  
  <p>Thanks,
  Dave.</p>