The standard SDK contains the cross-compilation toolchain, including the debugger as well as target and host sysroots. Its size depends on the image it is built to match, but is usually hundreds of MB. The extensible SDK comes in two flavors, full (the default) and minimal, and it allows for a certain degree of customization as well as being updatable.

• The full extensible SDK includes the following:
  • Toolchain
  • Complete shared state cache artifacts and everything needed to recreate the images it is built against
  • The devtool command-line application
  • Its size depends on the image it is built against, but can be several GB
• The minimal extensible SDK produces a small SDK, around 35 MB in size, which does not include the toolchain or libraries. The minimal SDK needs to be updated using devtool, so it also needs to include package information, which will increase the size of the SDK significantly, or be configured with a shared state mirror it can use.

We will use the previously used wandboard build directory and source the setup-environment script as follows:

$ cd /opt/yocto/fsl-community-bsp/
$ source setup-environment wandboard