How to set up a mobile build server

Why a mobile build server ?

To develop mobile applications whether for Android, iOS, Tizen or Windows Phone, we need to use the SDK for the appropriate platform. The size of these SDK is more than 1Go for the basics and it can reach around 10-15Go if we download sdk for different versions.

Frequently, in a company, several developers works on a mobile project and it’s very annoying to download the SDK on each workstation. An other case it’s when you work with different OS or different computers: you need to download the SDK multiple times.

Centralized the SDK

A solution is to install the SDK only once on a server which will compile and build the archive for the platform. A mobile project will be in a git repository which will be on the server. The project will be compiled and the archive will be sent to the developer. It will follow this simple process:

  1. Server-side: Create a git repository on the server
  2. Client-side: Clone the repository, work on it, commit and push.
  3. Client-side: Execute a script which will build the project on the server and copy locally the remote archive (apk, ipa, etc).

I will present this solution for the Android SDK which is the easiest to put in place. More specifically the server will be a solution for decentralized cordova/ionic build system.

No graphical interface is needed. This process could be used on an old server, a raspberry pi or anything else. Just need a terminal.

Wait… Other solutions like a docker container or continuous integration system exist. What’s the difference ?

There’re some docker images like this which does the job. Even if I like docker and use it, we must download the image, run it and it takes some place and resources (not a lot) and we don’t have always these resources.

Generally, continuous integration system provide more than we need. And when we want to modify a behavior, we wast time to learn how it’s working. Also some continuous integration system needs some specific resources requirement.

An other point is this method doesn’t require root privileges (for Android SDK): it could be used independantly by a user.

Last this method works on Mac OS X server and only the build script (see below) must be changed. The Mac OS X script will also be given.

No root privileges required, no need a lot of resources, easy to install and to use, no graphical interface needed.
This tutorial is tested and developed for a ssh server running on Linux with git, wget and npm installed (cordova/ionic).

Now, let’s go !

This “How-To” tutorial will be separated into 3 parts for the server configuration and a script for the client.

  1. Server-side and client-side: (Optional) Create and configure an user on the build server
  2. Server-side: Install and configure the Android SDK
  3. Server-side: Install and configure cordova/ionic
  4. Client-side: Automate the build process

At the end of each part, a script to automate everything will be given.

Important: we can transform the server for another type of compilation such as C, LaTeX, etc with the same idea. We only have to change the username and the client build script.

Go to the first part

GSMath

GSMath: a math hybrid library.

In the same idea than GSLib GSMath is a library, available in multiple languages, keeping the same structure and the same functions. GSMath provides functions to do linear algebra (matrix), differential analysis, basic algebra, trigonometry,…

What’s an hybrid library and why ?

I think programming languages must be seen as a tool, not as a “raw material”.

I don’t say every programming languages is equivalent in the sense there’re no needs to compare them. There’re better programming languages than other, and it depends on what you have to do. There’re also different theoric aspects of programming languages which matters a lot. For example, you’ve to be foolish to code a JQuery like or a web render in brainf***. As a tool, there’re better tools than other (but it’s not the subject of this article, maybe later).

I think a programming language must be seen as a way to communicate with your computer as you want: the compiler or interpreter is there to translate to your machine. So, why do we have to learn a new standard library when we learn a new programming language ? Why do we have to talk differently to each interpreters and compilators ?
It’s not very productive and we don’t often remember basic functions because we have to switch between different syntaxes.

You shouldn’t be afraid about the syntax and the semantic to learn a new programming language or when you work with several languages.

For these reasons, I began to write a library I called GSMath. I say it’s an hybrid library because you can use it in the programming language you want with the same namespace and the same algorithms for the implementation. The last point is I think important because when we want to learn a new programming language, it’s a good way to learn to study how standards libraries are implemented.

GSMath isn’t always the fastest and the more efficient implementations of math libraries.

GSLib

GSLib: an hybrid library.

When we learn a new programming language, we must read a lot of documentation to know which basic functions do what we want such as create a linked list, a tree, a graph, …
GSLib is a library, written in multiple languages, keeping the same structure and providing the same functions and data structures for all languages, which let you easily switch to a new language.

What’s an hybrid library and why ?

I think programming languages must be seen as a tool, not as a “raw material”.

I don’t say every programming languages is equivalent in the sense there’re no needs to compare them. There’re better programming languages than other, and it depends on what you have to do. There’re also different theoric aspects of programming languages which matters a lot. For example, you’ve to be foolish to code a JQuery like or a web render in brainf***. As a tool, there’re better tools than other (but it’s not the subject of this article, maybe later).

I think a programming language must be seen as a way to communicate with your computer as you want: the compiler or interpreter is there to translate to your machine. So, why do we have to learn a new standard library when we learn a new programming language ? Why do we have to talk differently to each interpreters and compilators ?
It’s not very productive and we don’t often remember basic functions because we have to switch between different syntaxes.

You shouldn’t be afraid about the syntax and the semantic to learn a new programming language or when you work with several languages.

For these reasons, I began to write a library I called GSLib. I say it’s an hybrid library because you can use it in the programming language you want with the same namespace and the same algorithms for the implementation. The last point is I think important because when we want to learn a new programming language, it’s a good way to learn to study how standards libraries are implemented.

GSLib isn’t always the fastest and the more efficient implementations of stardard libraries. For example, if you’re on an embedded system, use GLib is a better library because asm code is used to optimize on the platform.
Due to a bad manipulation, GSLib must be rewritten. A documentation and implementation in pseudo-code will be soon available.