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1. Find the recipe for the component and add a SRC_URI for the patch file. 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/"

   
   

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

   
   

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

   
   

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

   # 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.

    
    

11. exit

    
    

12. Do a Clean and then build.

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