Search notes:

/usr/src/linux-headers-$(uname -r)

Debian

At least Debian seems to install Linux kernel header files not directly under /usr/include/linux but in a «versioned» directroy named after the result of uname -r.
The Debian/APT package linux-headers-$(uname -r) contains some of the files located in this directory.
Compare with the APT package linux-image-$(uname -r)

See also

/lib/modules/$(uname -r)

Index

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