I encountered this error whiling install the PyPy port of Numpy on Ubuntu 16.04. Here is how to solve it.

This post explains the automatic testing setup for the WlTrace project. You can see a live demo for all tools described in this post at the WlTrace Github repo.

Recently I was in development of a Python project that supports both the regular Python 2.7 and also the PyPy environment. Here is how to setup the automatic testing environment using Tox and Travis-CI.

Recently I adjusted my blog work flow a bit to utilize Travis CI to automatically test and publish the site. Here is my setup process.

AutoSSH is a great tool to maintain a persistent SSH tunnel. Here is how to start AutoSSH on boot so that the tunnel can survive system reboot of the local machine.

I have a Gmail account for Android ROM testing purpose. And I kept receiving this annoying email from Google anytime I use that account to sign in Gmail (most of the time it's a clean flashed Android phone which I will wipe out later). Here is how to disable the email notification.

I couldn't find any solid document online. Here are the steps to configure Gerrit server to automatically start upon system boot on Ubuntu.

I encountered this error while trying to use the RecoverySystem.installPackage API to apply an OTA update. This post shows what causes the error and how to walk around it. The error occurs for AOSP release android-6.0.1_r24 in my case.

Recently I needed to create a mirror of CyanogenMod to facilities further development of our smartphone testbed PhoneLab. The goal is to have a working mirror that we can stage any experimental changes on our own server, since there is no plan to publish such changes to upstream (at least for now). Quite surprisingly, I found this to be a non-trivial task. Here is a log of I walked around the minefield.

I encountered this error a lot recently when trying to compile a customized Verilog project for USRP N210 using Xilinx ISE 12.2. Here is one reason why this error might happen from my experience.