Beyond Linux® From Scratch (systemd Edition) - Version 11.3

Chapter 9. General Libraries

libportal-0.6

Introduction to libportal

The libportal package provides a library that contains GIO-style async APIs for most Flatpak portals.

This package is known to build and work properly using an LFS 11.3 platform.

Package Information

libportal Dependencies

Required

gobject-introspection-1.74.0

Recommended

GTK+-3.24.36, GTK-4.8.3, and Qt-5.15.8

Optional

Gi-DocGen-2023.1 and Vala-0.56.4

User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/libportal

Installation of libportal

[Warning]

Warning

If a previous version of libportal is installed, move the headers out of the way so that later packages do not encounter conflicts (as the root user): 

if [ -e /usr/include/libportal ]; then
    rm -rf /usr/include/libportal.old &&
    mv -vf /usr/include/libportal{,.old}
fi

Install libportal by running the following commands: 

mkdir build &&
cd    build &&

meson --prefix=/usr --buildtype=release -Ddocs=false .. &&
ninja

If you have Gi-DocGen-2023.1 installed and wish to build the API documentation for this package, issue: 

sed "/output/s/-1/-0.6/" -i ../doc/meson.build &&
meson configure -Ddocs=true                    &&
ninja

This package does not come with a test suite.

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.

-Ddocs=false: Allow building this package without Gi-DocGen-2023.1 installed. If you have Gi-DocGen-2023.1 installed and you wish to rebuild and install the API documentation, a meson configure command will reset this option.

-Dbackends=gtk3,gtk4,qt5: This switch allows you to set the available backends. You can use it to disable the dependency on gtk-3, gtk-4, or qt-5. Most applications that use libportal will use either gtk-4 or gtk-3. The default is to build all three backends.

Contents

Installed Programs: None
Installed Libraries: libportal.so, libportal-gtk3.so, libportal-gtk4.so, and libportal-qt5.so
Installed Directories: /usr/include/libportal and /usr/share/gtk-doc/html/libportal

Short Descriptions

libportal.so

provides GIO-style async APIs for most Flatpak portals

libportal-gtk3.so

provides GTK+-3 specific functions for interacting with Flatpak portals.

libportal-gtk4.so

provides GTK-4 specific functions for interacting with Flatpak portals.

libportal-qt5.so

provides Qt5 specific functions for interacting with Flatpak portals.