Make sure to use all your threads: make -j4 or however many cores/threads you would like to use

See here. Basically, creating a relay for the AT protocol is extremely costly and only possible for big tech companies.

Ok, just did. Works fine.

apt install build-essential
apt build-dep emacs
wget https://ftp.gnu.org/gnu/emacs/emacs-30.1.tar.xz
tar -xf emacs-30.1.tar.xz
cd emacs-30.1
./configure —prefix=/usr/local
make
make install

Edit: forgot cd

Nah, building from source takes a few minutes unless you are building a web browser.