UnrealEngineUWP/Engine/Source/ThirdParty/LinuxNativeDialogs/README.md

you can just: bash README.md

from its location to execute commands below

cd UELinuxNativeDialogs cd build cmake .. make mv lib{qt,gtk}.so ../lib/Linux/x86_64-unknown-linux-gnu/ cp ../lib/Linux/x86_64-unknown-linux-gnu/.so ../../../../../../Engine/Binaries/Linux/ cd ../../../../../../Engine/Binaries/Linux/

if [ -f libqt4dialog.so ]; then ln -s libqt4dialog.so libLND.so fi

if [ -f libqt5dialog.so ]; then ln -s libqt5dialog.so libLND.so fi

if [ -f libgtk2dialog.so ]; then ln -s libgtk2dialog.so libLND.so fi

if [ -f libgtk3dialog.so ]; then ln -s libgtk3dialog.so libLND.so fi