raspberrypi/linux ? reverse-engineered prompt

I want to build a custom Linux kernel for my Raspberry Pi. I've got a Pi 4 and I'm interested in seeing if I can compile the operating system myself from this source code. I'm not a kernel developer, so you'll have to handle all the complicated stuff.

Please set up the necessary build environment. You'll probably need to figure out the right compilers and tools for building for a Raspberry Pi. Then, configure the build with some sensible defaults for a standard Pi 4, and run the compilation process.

The end goal is to have a kernel image and any other files I'd need to copy onto my Pi's SD card to boot it. Feel free to look up the latest official Raspberry Pi documentation for the recommended toolchain and build process.