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#Android ndk r9 download how to#
#Android ndk r9 download install#

Commands and file names are case sensitive. It is assumed that the reader is familiar with Linux commands and the shell.

Optionally, if you are planning to compile the whole Android platform (not just the kernel), a 64-bit system is required for Gingerbread (2.3.x) and newer versions.

Android kernel source (as mentioned earlier, this article describes the steps for the Samsung Galaxy Star kernel).

Dependent software should include GNU Make, libncurses5-dev, etc.

#Android ndk r9 download install#

Around 5 GB of free space to install the dependent software and build the kernel.

Steps explained in this article are for Ubuntu 14.04 LTS to be specific.

Linux system (Linux running on a virtual machine will also work but is not recommended).

The handset details are shown in the screenshot (Figure 2) taken from the Setting ->About device menu of the phone.īefore you download and build the Android kernel, ensure that your system meets the following requirements: However, the process should work with any Android kernel and device, with minor modifications. The build process was performed on an Intel i5 core processor running 64-bit Ubuntu Linux 14.04 LTS (Trusty Tahr).

#Android ndk r9 download how to#

In this article, I describe how to compile the kernel for the Samsung Galaxy Star Duos (GT-S5282) with Android version 4.1.2. Linux kernel: At the bottom of the stack is a Linux kernel, with some architectural changes/additions including binder, ashmem, pmem, logger, wavelocks, different out-of-memory (OOM) handling, etc. HAL: This acts as a glue between the Android system and the underlying device drivers.

Figure 2 : Handset details for GT-S5282īinder IPC: It is an Android-specific IPC mechanism.Īndroid system services: To access the underlying hardware application framework, APIs often communicate via system services. Here is a quick summary of what the architecture comprises.Īpplication framework: Applications written in Java directly interact with this layer. We will not get into the finer details of the architecture in this article since the primary goal is to build the kernel. Figure 1 illustrates how Android works at the system level. Before we begin building an Android platform, lets understand how it works at a higher level.