Hello Zvika,
<S> should be source code folder.
For example,
u-boot : build_ls1021atwr/tmp/work/ls1021atwr-fsl-linux-gnueabi/u-boot-qoriq/2016.01+fslgit-r0/git/
Linux Kernel: build_ls1021atwr/tmp/work/ls1021atwr-fsl-linux-gnueabi/linux-qoriq/4.1-r0/git/
Linux application linux-libc-headers: build_ls1021atwr/tmp/work/cortexa7hf-vfp-neon-fsl-linux-gnueabi/linux-libc-headers/4.1-r0/linux-4.1/
If this is what you need, please copy the whole content here.
Have a great day,
Yiping
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