Setup emacs snapshot on ubuntu

[Jason Milkins]

Found that using the Emacs source 25.1.5 is a better deal than the snapshot. (unless you want to jump immediately into v.26.)

Do this...

sudo apt-get install automake        \
                     autoconf        \
                     texinfo         \
                     gtk2.0          \
                     librsvg2-dev    \
                     libpng-dev      \
                     libjpeg-dev     \
                     libtiff-dev     \
                     libxpm-dev      \
                     libgif-dev      \
                     libncurses-dev  \
                     libxml2-dev     \
                     gnutls-dev      \
                     wget

wget https://github.com/emacs-mirror/emacs/archive/emacs-25.1.90.tar.gz
tar zxvf emacs-25.1.90.tar.gz
cd emacs-emacs-25.1.90
make bootstrap
sudo make install

Alternatively grab the 25.1 tar.xz from GNU directly: http://ftp.gnu.org/gnu/emacs/emacs-25.1.tar.xz

Note: If you don't use the tag 25.1.90 from emacs-mirror, the GCC PIE flag may be needed.