arm64 repos?

[seasoned_geek]

All,

I read through this document on cross compiling. It really wasn't informative.

When I'm setting up a Ubuntu VM for cross compile to Arm V8, all I have to really do is.

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sudo nano /etc/apt/sources.list

then add the version appropriate lines and save

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deb [arch=arm64] http://ports.ubuntu.com/ focal main multiverse universe
deb [arch=arm64] http://ports.ubuntu.com/ focal-security main multiverse universe
deb [arch=arm64] http://ports.ubuntu.com/ focal-backports main multiverse universe
deb [arch=arm64] http://ports.ubuntu.com/ focal-updates main multiverse universe

Then I could get what I needed for arm64

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sudo dpkg --add-architecture arm64
sudo apt-get update
sudo apt-get install crossbuild-essential-arm64
sudo apt-get install gcc g++ cmake make ninja-build 
sudo apt-get upgrade
sudo apt-get autoremove
sudo apt-get install libx11-dev libx11-dev:arm64 libx11-xcb-dev libx11-xcb-dev:arm64

After that I could make a directory, cd to it, then go here and pull down the 3 files. Then go here to pull down the header. All I had to do was tweak where main.c was looking for nuklear.h. After that I could do this.

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make CC="/usr/bin/aarch64-linux-gnu-gcc"

That would create an arm64 binary that could be transferred to target device and executed.

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file bin/zahnrad 
bin/zahnrad: ELF 64-bit LSB shared object, ARM aarch64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-aarch64.so.1, BuildID[sha1]=77ac2a1bc4ed24786e35cf7ef1bf6e99fcf37e05, for GNU/Linux 3.7.0, not stripped

Sorry for the journey, but it will help stop all of the "why don't you just do" question responses.

What I'm looking for is the lines needed to add to /etc/apt/sources.list.

I'm perfectly fine having the extra files cluttering up my system. I really want to use Debian for my cross platform development environment because I'm sick and tired of Ubuntu nagging me to "Upgrade to Ubuntu Pro!" That's not the only issue, but it's a big one.

I should be able to replicate this workflow in Debian I would think, am I incorrect? Has Debian abandoned the "traditional" embedded systems development workflow in favor of the things on that documentation page I linked?

Thanks!