Install Dolphin (EMU) developer edition on Ubuntu 25.10:
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You need the developer edition of the Dolphin Wii/Gamecube emulator to use Vulkan graphics as of Ubuntu 20.04.

Dolphon-emu was removed from Ubuntu repositories from 2019 to 2023. 2025 editions of Ubuntu have brought dolphin-emu back but its currently unstable.

0.Get prerequisite (24.04 or newer) *Update on June 2023 for qt6 support rather then qt5:
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sudo apt install --no-install-recommends ca-certificates qt6-base-dev qt6-base-private-dev libqt6svg6-dev git cmake make gcc g++ pkg-config libavcodec-dev libavformat-dev libavutil-dev libswscale-dev libxi-dev libxrandr-dev libudev-dev libevdev-dev libsfml-dev libminiupnpc-dev libmbedtls-dev libcurl4-openssl-dev libhidapi-dev libsystemd-dev libbluetooth-dev libasound2-dev libpulse-dev libpugixml-dev libbz2-dev libzstd-dev liblzo2-dev libpng-dev libusb-1.0-0-dev gettext git


1.Get dolphin master (developer):
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git clone https://github.com/dolphin-emu/dolphin.git dolphin-emu-master --recursive
cd dolphin-emu-master

2.Build:
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*On my MSI2022 Laptop, may need to go to the "CMake" directory and delete the FindFFmpeg.cmake file since ffmpeg will cause dolphin build to fail at around the 100% (linking) mark (VAAPI ISSUE).
mkdir Build && cd Build
cmake ..
make -j$(nproc)
sudo make install

Dolphin developer should now successful have been installed!
It should be an icon in KDE menu now.

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Sources:
https://wiki.dolphin-emu.org/index.php?title=Building_Dolphin_on_Linux
https://askubuntu.com/questions/1234080/dolphin-emulator-development-version
https://forums.dolphin-emu.org/Thread-building-from-source-cmake-fails-because-of-mgba-errors

Date: 2021 (for most of page)
Update: Jan 2022, added line to fix broken cmake.
Update: Feb 2023, Added line to fix ffmpeg breaking dolphin build on MSI2022.
Update: Dec 2025: Updated for Ubuntu 25.10 and update build instructions/ cleaned this page.