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Installing Emacs on Ubuntu

These instructions originally came from this essay.

To get the native compilation for Emacs working, first install all the pre-reqs, and we seem to need a lot of them:

sudo apt update
sudo apt upgrade
# Instead of this:
sudo apt install -y build-essential autoconf
# We can not just call this:
sudo apt build-dep -y emacs

# We will build using the GTK and related libraries,
# instead of good ol' X11:
sudo apt install -y libc6-dev libgtk-3-dev xaw3dg-dev \
     zlib1g-dev libice-dev libsm-dev libx11-dev libxext-dev

# Nifty new stuff supported in Emacs needs libraries:
sudo apt install -y libjansson4 libjansson-dev \
     gnutls-bin libtree-sitter-dev

# I am not sure if/why we need these guys, but ...
sudo apt install -y libxi-dev libxmu-dev libxmuu-dev \
     libxrandr-dev libxt-dev libxtst-dev libxv-dev \
     libattr1-dev

# And install all the image libraries (otherwise, we need
# the venerable imagemagick library):
sudo apt install -y  libtiff5-dev libgif-dev  \
  libpng-dev libxpm-dev libncurses-dev libtiff-dev \
  libwebkit2gtk-4.0-dev libjpeg-dev
# Or do we want the specific: libjpeg62-dev

Oh, and if we are still building with ImageMagick, install that too:

sudo apt-get install texinfo imagemagick

We need libgccjit that matches the GCC installed, e.g. 12:

GCC_VERSION=$(gcc --version | head -1 | cut -d' ' -f4 | cut -d. -f1)
sudo apt install libgccjit-${GCC_VERSION}-dev

Clone the Emacs repo, and jump on the latest, almost-released branch:

mkdir -p ~/other ; cd ~/other
git clone git://git.sv.gnu.org/emacs emacs
cd emacs

git checkout -b emacs29

Then let’s build it:

./autogen.sh

./configure --with-native-compilation --with-cairo --with-json \
  --with-xml2 --with-mailutils --with-tree-sitter --with-pgtk \
  --with-gnutls=ifavailable --with-tiff=ifavailable \
  --program-suffix=30 \
    CFLAGS="-O3 -mtune=native -march=native -fomit-frame-pointer"

make -j$(nproc)  && sudo make install

Supporting Packages

Now install all the extras:

sudo apt install -y libvterm-dev
sudo apt install -y git-delta
sudo apt install -y mu4e isync
sudo apt install -y gpg

Mu4a

See ha-email for better instructions.

mkdir -p ~/.mail/work ~/.mail/gmail
mu init --maildir=~/.mail   mu index
mbsync -Va
mu index

Mbsync config

See ha-email for better instructions.

cat ~/.mbsyncrc

Basic configuration, that I actually supersede.

# ========== Gmail ==========
IMAPAccount gmail
Host imap.gmail.com
User [email protected]
PassCmd "/usr/bin/gpg --quiet --for-your-eyes-only --no-tty --decrypt ~/.password-store/mbsync/gmail.gpg"
AuthMechs LOGIN
SSLType IMAPS

IMAPStore gmail-remote
Account gmail

MaildirStore gmail-local
Subfolders Verbatim
Path ~/.mail/gmail/
Inbox ~/.mail/gmail/Inbox

Channel gmail
Far :gmail-remote:
Near :gmail-local:
Patterns * ![Gmail]* "[Gmail]/Sent Mail" "[Gmail]/Starred" "[Gmail]/All Mail"
Expunge None
CopyArrivalDate yes
Sync All
Create Near
SyncState *
# ========== Gmail ==========

Dæmon Processes

According to this essay, we have several ways to launch Emacs as a daemon during startup. Since systemd is the init daemon in v20+, we register Emacs as a service under systemd to be launched during startup. Systemd will monitor this service and restart if the service crashes for any reason. To configure the service, we first create the file ~/.config/systemd/user/emacs.service and copy the below:

[Unit]
Description=Emacs text editor
Documentation=info:emacs man:emacs(1) https://gnu.org/software/emacs/

[Service]
Type=forking
ExecStart=/usr/local/bin/emacs --daemon
ExecStop=/usr/local/bin/emacsclient --eval "(kill-emacs)"
Environment=SSH_AUTH_SOCK=%t/keyring/ssh
Restart=on-failure

[Install]
WantedBy=default.target

Then run the following in the terminal:

systemctl enable --user emacs
systemctl start --user emacs

Verify that the emacs service is running by using:

systemctl status --user emacs

Now, we only use emacsclient. We have these terminal alias:

  • e: Open a terminal version
  • ee: Open an Emacs frame

Fetch mails periodically

Let’s make another dæmon for fetching mail. Perhaps we should use gnubiff instead.

[Unit]
Description=Mbsync Mail Fetcher
Documentation=https://www.systutorials.com/docs/linux/man/1-mbsync/

[Service]
Type=forking
ExecStart=/usr/bin/mbsync --daemon
ExecStop=/usr/bin/mbsync --eval "(kill-mbsync)"
Environment=SSH_AUTH_SOCK=%t/keyring/ssh
Restart=on-failure

[Install]
WantedBy=default.target


<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>KeepAlive</key>
    <true/>
    <key>Label</key>
    <string>periodic.mbsync</string>
    <key>ProgramArguments</key>
    <array>
      <string>/Users/USERNAME/.bin/mbsync-task</string>
    </array>

    <key>StandardOutPath</key>
    <string>/tmp/mbsync-task.log</string>

    <key>StandardErrorPath</key>
    <string>/tmp/mbsync-task.log</string>

    <key>ThrottleInterval</key>
    <integer>180</integer>

    <key>RunAtLoad</key>
    <true/>

    <key>UserName</key>
    <string>howard</string>
  </dict>
</plist>

Verify that the plist file is correct.

plutil -lint ~/Library/LaunchAgents/periodic.mbsync.plist

Start, stop and list service.

launchctl load -w /Users/USERNAME/Library/LaunchAgents/periodic.mbsync.plist
launchctl unload /Users/USERNAME/Library/LaunchAgents/periodic.mbsync.plist
launchctl list

Script that fetches mails and updates the mail index.

echo ""
echo "Running $(date +"%Y-%m-%d %H:%M")"
/usr/bin/mbsync -Va
echo "Exit code:"
echo $?
/usr/local/bin/emacsclient -e '(mu4e-update-index)'
echo "Exit code:"
echo $?

Emacsclient

Simple Automator script that’s wrapped into an application and placed in the Applications folder. Select New Document, then select Application. Open the Library, and drag the Run Shell Script to the workflow. In the box, add this:

/usr/local/bin/emacsclient -nc --socket-name work $*

Change the Pass Input to as arguments.

Select to Save as Emacsclient into the Applications folder.

Utils

Convert a plist XML file into a JSON file. Not sure why this is important to know…

plutil -convert json -r ~/Library/LaunchAgents/gnu.emacs.plist

Which should look a bit like:

{
    "KeepAlive" : true,
    "Label" : "gnu.emacs",
    "ProgramArguments" : [
        "\/opt\/homebrew\/bin\/emacs",
        "--fg-dæmon"
    ],
    "RunAtLoad" : true,
    "StandardErrorPath" : "\/tmp\/gnu-emacs-dæmon.log",
    "StandardOutPath" : "\/tmp\/gnu-emacs-dæmon.log",
    "UserName" : "USERNAME"
}

Convert it back to XML

plutil -convert xml1 ~/Library/LaunchAgents/gnu.emacs.plist

Resources

man launchd
man launchctl
man launchd.plist
man plutil
man plist