Wolfgang Grandegger wrote:
> what is "prepare_kernel --output-patch" useful for?

It modifies the behavior of prepare_kernel, so that it does not 
modify the kernel source tree (except that it must apply the 
Adeos patch), but instead generates a patch file that has the 
same effect when applied against that Adeos-patched kernel 
source tree.

Therefore, it is useful for creating Xenomai packages for 
GNU/Linux distributions, such as packages based on dh-kpatches 
in Debian, which require to have patch files.


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