# Install
sudo apt install ninja-build
sudo apt install meson # or `pip install meson` if too old

# You might find along the way you need some other dependencies
sudo apt install libgstreamer-plugins-bad1.0-dev

# Need to build Glib first:
# https://download.gnome.org/sources/glib/2.71/glib-2.71.2.tar.xz
# In glib2 source dir:
meson setup builddir
meson compile -c builddir
meson install -c builddir

# Need to build Glib-networking to get TLS
# https://download.gnome.org/sources/glib-networking/2.70/
# sudo apt install gsettings-desktop-schemas-dev
# sudo apt install libproxy-dev
# sudo apt install cmake
# In the glib-networking dir:
meson setup builddir
cd builddir
ninja
ninja install

# For GTK4, in Gtk4 source dir
# Get build options:
meson configure

# To build with `gtk_doc=true` option
pip install gi-docgen 
sudo apt install gir1.2-graphene-1.0 libgraphene-1.0-dev

# Omit prefix to let it install to install to system `/usr/local/`
meson setup -Dgtk_doc=true --prefix $HOME/gtk4 builddir

# Might need to install some deps like libjpeg,  or sudo apt install libgstreamer1.0-dev

cd builddir
ninja

# Documentation will now be in docs/
# For example: gtk-4.6.1/docs/reference/gtk/gtk4/index.html

# There are examples in source under examples/ directory 

# Install to prefix (use `sudo` if doing system install)
ninja install