Embedded Linux Development Using Yocto Project Cookbook - Second Edition

How to do it...

An example snippet showing the installation of a pre-installation script in a recipe is as follows:

pkg_preinst_${PN} () { 
    # Shell commands 
} 

All installation scripts work in the same way, with the exception that post-installation scripts may be run either on the host at root filesystem image creation time, on the target (for those actions that cannot be performed on the host), or when a package is directly installed on the target. The following code shows a way to add a post-installation script to a recipe:

 pkg_postinst_${PN} () { 
     if [  x"$D" = "x" ]; then 
          # Commands to execute on device 
     else 
          # Commands to execute on host 
     fi 
 } 

If the post-installation script succeeds, the package is marked as installed. If the script fails, ...