Building Emacs

source

Enable 'Source code' in 'Ubuntu Software' in

/usr/bin/python3 /usr/bin/software-properties-gtk

install build tools

sudo apt install build-essential checkinstall

build emacs dependencies

sudo apt-get build-dep emacs24

clone emacs git repo

git clone -b master git://git.sv.gnu.org/emacs.git

create and run config script

 ./autogen.sh && ./configure

make and make install

make && sudo make install