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:
We will use the Yocto project cross-compilation toolchain already installed in your host.
Clone the
wandboard-org linux-wandboard
repository locally:$ cd /opt/yocto $ git clone https://github.com/wandboard-org/linux.git linux-wandboard $ cd linux-wandboard
Go to the branch specified in the
linux-wandboard_3.10.17.bb
recipe:$ git checkout -b wandboard_imx_3.10.17_1.0.2_ga origin/wandboard_imx_3.10.17_1.0.2_ga
Compile the kernel source as follows...