# Compile Ubuntu Desktop for Intel CPU's Linux Kernel From Source

###### tags: `linux2021 jserv 1-on-1`

# Steps

* Get the kernel source code that is used for building the currently running system and [build it](https://phoenixnap.com/kb/build-linux-kernel)
* [`software-properties-gtk`](https://askubuntu.com/questions/496549/error-you-must-put-some-source-uris-in-your-sources-list) -> tick the `source code` box
* You can check `/etc/apt/sources.list`
* setup build dependencies
* `sudo apt-get build-dep linux linux-image-$(uname -r)`
* `sudo apt-get install git fakeroot build-essential ncurses-dev xz-utils libssl-dev bc flex libelf-dev bison`
* get source code `sudo apt-get source linux-image-unsigned-$(uname -r)`
* Or use `git clone git://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/focal`
* as recommended by running the `apt-get source` command
* build the kernel

        make menuconfig
        make -j 8
        sudo make modules_install
        sudo make install 

* issue
* `make[1]: *** No rule to make target 'debian/canonical-certs.pem', needed by 'certs/x509_certificate_list'. Stop.`
* `scripts/config --disable SYSTEM_TRUSTED_KEYS`
* kernel will be made as default for the next boot, automatically
* uninstall the kernel
* TBD

# cacULE

* **For cacULE**: simply get the patched kernel tree `https://github.com/hamadmarri/linux`, and compile normally