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How to modify yocto jethro and rebuild

Question asked by Damien Huang on Apr 4, 2016
Latest reply on Jul 27, 2016 by Qinghua Zhu

Hi

I need someone to help me on this.

 

I checkout the yocto jethro repo from BoundaryDevice (https://boundarydevices.com/jethro-release-of-yocto/), And followed their instruction to build SD card image, very thing is fine.

 

But I need to make some debugging into the yocto kernel source, so I inserted some printk statements into a kernel source file, in this instance, the "~/jethro/boundary-eval-image/tmp/work-shared/nitrogen6x/kernel-source/drivers/net/phy/micrel.c" file. However, I don't know how to recompile and get my modifications into a new build SD image.

 

I tried the the below three instructions

 

  ”
bitbake -c clean virtual/kernel
bitbake -c compile virtual/kernel
bitbake -c install virtual/kernel

 

but these instructions always reverts my modifications and put the source back to original. Can someone help me to overcome this?

 

Cheers,
Damien

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