gpio-manager install notes

notes.md

Notes on installing gpio-manager d-bus service from source

Depedencies:

sudo apt install autoconf autoconf-archive libglib2.0-dev libgudev-1.0-dev libtool pkg-config
# for Python bindings
sudo apt install python3-build python3-dev python3-pip python3-venv

Configure it:

systemdsystemunitdir=/usr/local/lib/systemd/system ./autogen.sh --enable-tools --enable-bindings-python --enable-dbus --enable-systemd

Setting systemdsystemunitdir environment variable prevents the systemd unit from being installed in /usr/lib/systed/system which is supposed to be reserved for packaged software.

--enable-systemd will build and install the systemd service file.

--enable-dbus is needed to build and install the dbus service.

Other options are up to you.

sudo make install does not do everyhing, so there are some extra steps:

• Create gpio-manager user or gpio groups.

  sudo addgroup --system gpio
  sudo adduser --system gpio-manager --ingroup gpio
  sudo usermod -aG gpio $USER
  newgrp gpio # or start a new login shell
  

• Install D-Bus conf in /etc

  sudo ln -s /usr/local/etc/dbus-1/system.d/io.gpiod1.conf /etc/dbus-1/system.d/
  

• Fix prefix in systemd service.

  Works aroud issue: brgl/libgpiod#173

  sudo systemctl edit gpio-manager.service
  

  [Service]
  ExecStart=
  ExecStart=/usr/local/bin/gpio-manager
  

• Trigger library

  sudo ldconfig
  

• Trigger udev rule

  udevadm trigger -s gpio
  

• Enable and start systemd service

  If it fails, it is probably becaues of permission error. Steps above have to be done first.

  sudo systemctl enable gpio-manager.service
  sudo systemctl start gpio-manager.service