Beyond Linux® From Scratch (System V Edition) - Version 12.2

Chapter 24. Graphical Environments

Xwayland-24.1.2

Introduction to Xwayland

The Xwayland package is an Xorg server running on top of the wayland server. It has been separated from the main Xorg server package. It allows running X clients inside a wayland session.

This package is known to build and work properly using an LFS 12.2 platform.

Package Information

Xwayland Dependencies

Required

libxcvt-0.1.2, Pixman-0.43.4, wayland-protocols-1.36, Xorg Applications (runtime), and Xorg Fonts (only font-util)

Recommended

libepoxy-1.5.10, libtirpc-1.3.5, and Mesa-24.1.5

Optional

git-2.46.0 (to download packages needed for the tests), libei-1.3.0, libgcrypt-1.11.0, Nettle-3.10, xmlto-0.0.29, Xorg Legacy Fonts (only bdftopcf, for building fonts required for the tests), rendercheck (for tests), and weston (for tests)

Installation of Xwayland

Install xwayland by running the following commands: 

sed -i '/install_man/,$d' meson.build &&

mkdir build &&
cd    build &&

meson setup ..                       \
      --prefix=$XORG_PREFIX          \
      --buildtype=release            \
      -D xkb_output_dir=/var/lib/xkb &&
ninja

Building the test framework needs some work. First, weston brings in several dependencies, but the number can be reduced by disabling unneeded features. The meson command for a stripped down build of weston is shown in Upstream continuous integration build.

Running the tests involves downloading two other frameworks, in addition to the mentioned optional dependencies: 

mkdir tools &&
pushd tools &&

git clone https://gitlab.freedesktop.org/mesa/piglit.git --depth 1 &&
cat > piglit/piglit.conf << EOF                                    &&
[xts]
path=$(pwd)/xts
EOF

git clone https://gitlab.freedesktop.org/xorg/test/xts --depth 1   &&

export DISPLAY=:22           &&
../hw/vfb/Xvfb $DISPLAY &
VFB_PID=$!                   &&
cd xts                       &&
CFLAGS=-fcommon ./autogen.sh &&
make                         &&
kill $VFB_PID                &&
unset DISPLAY VFB_PID        &&
popd

Then the tests can be run with: 

XTEST_DIR=$(pwd)/tools/xts PIGLIT_DIR=$(pwd)/tools/piglit ninja test

Now, as the root user: 

ninja install &&
cat >> /etc/sysconfig/createfiles << "EOF"
/tmp/.X11-unix dir 1777 root root
EOF

If Xorg-Server-21.1.13 is not installed and you do not plan to install it later, you can install Xvfb from this package. As the root user: 

install -vm755 hw/vfb/Xvfb /usr/bin

Command Explanations

sed -i '/install_man/,$d' meson.build: Prevents installing a manual page for Xserver, which is also provided by Xorg-Server-21.1.13. Remove this command if Xorg-Server-21.1.13 is not installed and you don't plan to install it later.

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

cat >> /etc/sysconfig/createfiles...: This command creates the /tmp/.X11-unix directory at startup, and ensures that the permissions and ownership are correct as required by applications using Xwayland.

Contents

Installed Program: Xwayland
Installed Library: None
Installed Directory: None

Short Descriptions

Xwayland

Allows X clients to run under wayland