Instruction how to build Google emojis 🤠 on Debian/Ubuntu (even on WSL) based Linux distros:

1: Download this repo github.com/googlefonts/noto-emoji
2. Open terminal inside noto-emoji-main folder
3. make sure you have all installed:

sudo apt-get update

sudo apt-get install python3
sudo apt-get install pkg-config
sudo apt-get install pngquant
sudo apt-get install zopfli
sudo apt-get install libcairo2-dev
sudo apt-get install imagemagick
sudo apt-get install python3.10-venv
sudo apt-get install gcc
sudo apt-get install make


4. paste these commands too:
python3 -m venv venv
source venv/bin/activate
pip install -r requirements.txt

5. Now you are ready to do some modifications to these emojis.
You can add new emojis to png/126 folder (other resolutions does not do anything at all) and in SVG folder you can only replace existing ones.

6. Now you are ready to build the PNG ones.
time make -j BYPASS_SEQUENCE_CHECK='True'

building emojis takes like 2 hours or 5 minutes
depends on your CPU.

7. After finishing building emojis remove fonts from "fonts" folder then type this command
mv *.ttf fonts/

8. now you can build COLRv1 (SVG android 13+) font
(cd colrv1 && rm -rf build/ && time nanoemoji *.toml)
cp colrv1/build/NotoColorEmoji.ttf fonts/Noto-COLRv1.ttf
cp colrv1/build/NotoColorEmoji-noflags.ttf fonts/Noto-COLRv1-noflags.ttf

This also takes time even 2h or 5 minutes

9. Once it finishes run command
shell
python colrv1_postproc.py


This fixes ZWJ emojis. (Instead of displaying ❤🔥it shows correct one ❤️‍🔥)

10. Now you can use fonts that are inside fonts folder.
You can now install them on Linux or install Windows Compatible on Windows or even pack them to flashable magisk zip like I do.


If you have any problems it should show you which emoji makes problem then remove it or fix it from from both png/126 and build/compressed_pngs

Good luck! 🙌