#### Beyond Linux® From Scratch (systemd Edition) - Version 11.1

### Chapter 25. Graphical Environment Libraries

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# Pango-1.50.4

## 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.

This package is known to build and work properly using an LFS-11.1 platform.

### Package Information

- Download (HTTP): https://download.gnome.org/sources/pango/1.50/pango-1.50.4.tar.xz

- Download (FTP): ftp://ftp.acc.umu.se/pub/gnome/sources/pango/1.50/pango-1.50.4.tar.xz

- Download MD5 sum: bc9616a0c2b1923476424e6f56913290

- Download size: 4.1 MB

- Estimated disk space required: 46 MB (with tests)

- Estimated build time: 0.3 SBU (with tests)

### Pango Dependencies

#### Required

Fontconfig-2.13.1 (must be built with FreeType-2.11.1 using HarfBuzz-3.4.0), FriBidi-1.0.11, and GLib-2.70.4

#### Recommended

Cairo-1.17.4, gobject-introspection-1.70.0 (Required if building GNOME), and Xorg Libraries

#### Optional

Cantarell fonts (for tests), sysprof-3.42.1, gi-docgen (to generate documentation), help2man, and libthai

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

## Installation of Pango

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.

`-Dintrospection=false`: Use this switch if you do not want to use gobject-introspection-1.70.0.

`--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

### 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

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