Beyond Linux® From Scratch (System V Edition) - Version r12.4-1388

Chapter 9. General Libraries

libwacom-2.18.0

Introduction to libwacom

The libwacom package contains a library used to identify graphics tablets from Wacom or various other vendors and their model-specific features.

[Note]

Note

This version of BLFS may not build or run some packages properly if LFS or dependencies have been updated since the most recent stable version of the System V books.

Package Information

libwacom Dependencies

Required

libevdev-1.13.6 and libgudev-238

Recommended

libxml2-2.15.1

Optional

Doxygen-1.16.1, git-2.53.0, librsvg-2.61.4, Valgrind-3.26.0 (optional for some tests), and pytest-9.0.2 with python-libevdev and pyudev

Installation of libwacom

Install libwacom by running the following commands: 

mkdir build &&
cd    build &&

meson setup ..            \
      --prefix=/usr       \
      --buildtype=release \
      -D tests=disabled   &&
ninja

To test the results, issue: ninja test. To run additional tests, install pytest-9.0.2, python-libevdev, and pyudev, then remove the "-D tests=disabled" option from the meson line above.

If upgrading from a previous version of libwacom, remove the old device database installation to prevent a potential duplicated match of devices in case some old database files are not overwritten: 

rm -rf /usr/share/libwacom

Now, as the root user: 

ninja install

Command Explanations

--buildtype=release: Specify a buildtype suitable for stable releases of the package, as the default may produce unoptimized binaries.

-D tests=disabled: This parameter disables some of the more advanced tests because they require pytest-9.0.2 and other two Python modules beyond the scope of BLFS to work properly.

Contents

Installed Programs: libwacom-list-devices, libwacom-list-local-devices, libwacom-show-stylus, and libwacom-update-db
Installed Libraries: libwacom.so
Installed Directories: /usr/include/libwacom-1.0 and /usr/share/libwacom

Short Descriptions

libwacom-list-devices

lists all tablet devices that are supported by libwacom

libwacom-list-local-devices

lists tablet devices that are connected to the system

libwacom-show-stylus

lists tablet stylus IDs

libwacom-update-db

updates the system according to the current set of tablet data files

libwacom.so

contains functions used for accessing Wacom information