This section describes how to make changes and build any particular component in RDK stack. 

List Yocto Components

To list the Yocto components, use:

bitbake-layers show-recipes
 
bitbake -s

Apply Patch and Build Component

1) Add the below line to the recipe of the component you need to modify.

        SRC_URI += "file://<name>.patch"                              

        eg:  SRC_URI += "file://temp.patch" in  meta-rdk-video/recipes-extended/devicesettings/devicesettings_git.bb          

2) Create a folder named "files" in the same folder of recipe. 

eg: In meta-rdk-video/recipes-extended/devicesettings/

3) Create a blank file with the same name given in the recipe.

         touch files/<name>.patch 

         eg: touch files/temp.patch  

4) bitbake <recipe> -c devshell

         eg: bitbake devicesettings -c devshell 

5) Do "quilt top" and verify if the patch file is reflected there. 

    eg:

        # quilt top

        patches/temp.patch

6) quilt add "filename which you need to modify" (If multiple files are there, then add all those)

        eg: quilt add Makefile.am configure.ac

7) Make necessary modifications required for these files.

8) quilt refresh

9) Verify if your modifications are reflected in the patch file.

         vi patches/<name>.patch

10) Now replace this patch file with original one in files folder.

         eg: cp patches/temp.patch ~/.../meta-rdk-video/recipes-extended/devicesettings/files/temp.patch

11) exit

12) Do a clean and then build.

bitbake -ccleanall devicesettings 

bitbake devicesettings