Introduction to GLib

The GLib package contains low-level libraries useful for providing data structure handling for C, portability wrappers and interfaces for such runtime functionality as an event loop, threads, dynamic loading and an object system.

This package is known to build and work properly using an LFS-8.2 platform.

Package Information

Additional Downloads

GLib Dependencies



dbus-1.12.6 (required for some tests), docbook-xml-4.5, docbook-xsl-1.79.2, and libxslt-1.1.32 (to build manual pages)

Additional Runtime Dependencies

Quoted directly from the INSTALL file: “Some of the mimetype-related functionality in GIO requires the update-mime-database and update-desktop-database utilities”, which are part of shared-mime-info-1.9 and desktop-file-utils-0.23, respectively.

User Notes:

Installation of GLib

If desired, appy the optional patch. In many cases, applications that use this library, either directly or indirectly via other libraries such as GTK+-3.22.28, output numerous warnings when run from the command line. This patch enables the use of an environment variable, GLIB_LOG_LEVEL, that supresses unwanted messages. The value of the variable is a digit that corresponds to:

1 Alert
2 Critical
3 Error
4 Warning
5 Notice

For instance GLIB_LOG_LEVEL=4 will skip output of Warning and Notice messages (and Info/Debug messages if they are turned on). If GLIB_LOG_LEVEL is not defined, normal message output will not be affected.

patch -Np1 -i ../glib-2.56.0-skip_warnings-1.patch


If upgrading from a previous version of GLib that was built using autotools, and the libtool archives were installed, you will need to adjust all installed libtool archives to replace references to the libtool archives for this package, /usr/lib/libg{io,lib,module,object,thread}, with the appropriate linker library flag (-l), -lg{io,lib,module,object,thread}. 600+ files must be modified on a complete gnome desktop.

Install GLib by running the following commands:

patch -Np1 -i ../glib-2.56.0-meson_fixes-1.patch &&

mkdir build-glib &&
cd    build-glib &&

meson --prefix=/usr -Dwith-pcre=system -Dwith-docs=no .. &&

The GLib test suite requires desktop-file-utils for some tests. However, desktop-file-utils requires GLib in order to compile; therefore, you must first install GLib and then run the test suite.

Now, as the root user:



If libxslt-1.1.32 is installed, the following command may indicate several (about 33) errors that start with "Error: no ID for constraint linkend:" when installing the man pages. These are harmless.

ninja install &&

chmod -v 755 /usr/bin/{gdbus-codegen,glib-gettextize} &&

mkdir -p /usr/share/doc/glib-2.56.0 &&
cp -r ../docs/reference/{NEWS,gio,glib,gobject} /usr/share/doc/glib-2.56.0

You should now install desktop-file-utils-0.23 and proceed to run the test suite.

To test the results, after having installed the package, issue: ninja test. When run in a graphical environment, one test, appinfo, fails if gnome-terminal-3.26.2 is not installed.

Command Explanations

sed ... Fix the version of the package to be consistent with other version numbers embedded in the code.

-Dwith-pcre=system: This switch causes the build to use a system-provided version of the PCRE library instead of an internal version.

-Dwith-docs=no: This switch prevents rebuilding the package documentation.


Installed Programs: gapplication, gdbus, gdbus-codegen, gio, gio-querymodules, glib-compile-resources, glib-compile-schemas, glib-genmarshal, glib-gettextize, glib-mkenums, gobject-query, gresource, gsettings, gtester, and gtester-report
Installed Libraries:,,,, and
Installed Directories: /usr/include/gio-unix-2.0, /usr/include/glib-2.0, /usr/lib/gio, /usr/lib/glib-2.0, and /usr/share/glib-2.0

Short Descriptions


can be used to start applications and to send messages to already-running instances of other applications.


is a simple tool used for working with D-Bus objects.


is used to generate code and/or documentation for one or more D-Bus interfaces.


is a utility that makes many GIO features available from the command line.


is used to create a giomodule.cache file in the listed directories. This file lists the implemented extension points for each module that has been found.


is used to read the resource description from a file and the files that it references to create a binary resource bundle that is suitable for use with the GResource API.


is used to compile all the GSettings XML schema files in directory into a binary file with the name gschemas.compiled that can be used by GSettings.


is a C code marshaller generation utility for GLib closures.


is a variant of the gettext internationalization utility.


is a C language enum description generation utility.


is a small utility that draws a tree of types.


offers a simple command line interface to GResource.


offers a simple command line interface to GSettings.


is a test running utility.


is a test report formatting utility.

GLib libraries

contain low-level core libraries for the GIMP Toolkit.

Last updated on 2018-03-17 21:04:17 -0500