Pango-1.50.12
Introduction to Pango
Pango is a library for laying out
and rendering text, with an emphasis on internationalization. It
can be used anywhere that text layout is needed, though most of the
work on Pango so far has been done
in the context of the GTK+ widget
toolkit.
![[Note]](../images/note.png)
Note
Development versions of BLFS may not build or run some packages
properly if dependencies have been updated since the most recent
stable versions of the book.
Package Information
Pango Dependencies
Required
Fontconfig-2.14.2 (must be built with
FreeType-2.12.1 using HarfBuzz-6.0.0), FriBidi-1.0.12, and GLib-2.74.5
Recommended
Cairo-1.17.6, gobject-introspection-1.74.0
(Required if building GNOME), and Xorg Libraries
Optional
Cantarell fonts (for tests), sysprof-3.46.0, Gi-DocGen-2023.1 (to generate
documentation), help2man, and
libthai
User Notes: https://wiki.linuxfromscratch.org/blfs/wiki/pango
Installation of Pango
Fix the installation directory of API documentation:
sed "/docs_dir =/s@\$@ / 'pango-1.50.12'@" -i docs/meson.build
Install Pango by running the
following commands:
mkdir build &&
cd build &&
meson --prefix=/usr --buildtype=release --wrap-mode=nofallback .. &&
ninja
To test the results, issue: ninja
test. Two tests, test-font and test-layout are known to fail.
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.
-Dgtk_doc=true: Although the default
value of this option is false, the API
documentation will be rebuilt and installed if Gi-DocGen-2023.1 is available, either as a
meson submodule (see below the --wrap-mode option) or on the system. The only
difference when setting this option to true is that meson exits with in error if gi-docgen
is not available.
-Dintrospection=disabled: Use this
switch if you do not want to use gobject-introspection-1.74.0.
--wrap-mode=nofallback:
This switch prevents meson from using subproject
fallbacks for any dependency declarations in the build files,
stopping it downloading any optional dependency which is not
installed on the system.
Configuring Pango
Config Files
/etc/pango/pangorc, ~/.pangorc and the file specified in the
environment variable PANGO_RC_FILE
Contents
Installed Programs:
pango-list, pango-segmentation, and
pango-view
Installed Libraries:
libpango-1.0.so, libpangocairo-1.0.so,
libpangoft2-1.0.so, and libpangoxft-1.0.so
Installed Directories:
/usr/include/pango-1.0 and
/usr/share/doc/pango-1.50.12 (if gi-docgen is available)
Short Descriptions
|
pango-list
|
displays a list of fonts that Pango can use that are currently
installed on the system
|
|
pango-segmentation
|
shows text segmentation as determined by Pango.
|
|
pango-view
|
renders a given text file through Pango for viewing purposes
|
|
libpango-1.0.so
|
contains low level layout rendering routines, a high
level driver for laying out entire blocks of text, and
routines to assist in editing internationalized text
|