Embedded Linux for Developers

Building the Linux kernel

In this recipe, we will go through the development workflows described earlier using the Linux kernel as an example.

How to do it...

We will see how the following development workflows are applied to the Linux kernel:

• External development
• Working directory development
• External source development

How it works...

Let's explain the three methodologies listed previously in detail.

External development

When compiling outside of the Yocto build environment, we can still use the Yocto-provided toolchain to build. The process is as follows:

1. We will use the Yocto project cross-compilation toolchain already installed in your host.
2. Clone the wandboard-org linux-wandboard repository locally:

   $ cd /opt/yocto
   $ git clone https://github.com/wandboard-org/linux.git ...