how to use rpmdev-setuptree?

I want to install a kernel rpm. Before that, I need to build a tree with rpmdev-setuptree.
I ran this command as root. No errors. Where can I check the tree structure? Is it located in the current directory or a specific directory or what else?
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Building a custom kernel

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jl66ConsultantAuthor Commented:
Thanks a lot for the tip. After running that command without errors, it creates the directory.

rpmbuild]# ls

After running
rpm -Uvh kernel*.src.rpm, it should put c/h code
# rpmbuild]# cd BUIID
# ls

There are no codes. However in SOURCES, there are a lot of files with extension .patch such as  

I have no ideas why there are no plain .c and .h files in BUILD. Can any gurus shed some light on it?

jl66ConsultantAuthor Commented:
Thanks a lot.
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