#### Beyond Linux® From Scratch (System V Edition) - Version 12.3

### Chapter 10. Graphics and Font Libraries

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# gegl-0.4.54

## Introduction to gegl

This package provides the GEneric Graphics Library, which is a graph based image processing format.

This package is known to build and work properly using an LFS 12.3 platform.

### Package Information

- Download (HTTP): https://download.gimp.org/pub/gegl/0.4/gegl-0.4.54.tar.xz

- Download MD5 sum: e739f5c59b18d3813b7b4ae77372f53d

- Download size: 5.7 MB

- Estimated disk space required: 124 MB (Add 4 MB for tests)

- Estimated build time: 0.7 SBU (add 0.1 SBU for tests, both with parallelism=4)

### gegl Dependencies

#### Required

babl-0.1.110 and JSON-GLib-1.10.6

#### Recommended

GLib-2.82.5 (with GObject Introspection), Graphviz-12.2.1 (build with pango and libpng), Pygments-2.19.1, and PyGObject-3.50.0

#### Optional

asciidoc-10.2.1, Cairo-1.18.2, FFmpeg-7.1 (currently broken), gdk-pixbuf-2.42.12, gexiv2-0.14.3, GTK-Doc-1.34.0, jasper-4.2.4, Little CMS-2.17, libraw-0.21.3, librsvg-2.59.2, libspiro-20220722, libtiff-4.7.0, libwebp-1.5.0, luajit-20250212, Pango-1.56.1, Poppler-25.02.0, Ruby-3.4.2, SDL2-2.30.11, v4l-utils-1.28.1, Vala-0.56.17, lensfun, libnsgif, libumfpack, maxflow, MRG, OpenCL, OpenEXR, poly2tri-c, source-highlight, and w3m

## Installation of gegl

If you are installing over a previous version of gegl, one of the modules will need to be removed. As the `root` user, run the following command to remove it:

    rm -f /usr/lib/gegl-0.4/vector-fill.so

Install gegl by running the following commands:

    mkdir build &&
    cd    build &&

    meson setup --prefix=/usr --buildtype=release .. &&
    ninja

To run the tests, issue: ninja test.

Now, as the `root` user:

    ninja install

## Command Explanations

`-D docs=true`: Use this switch to build and install the documentation (requires GTK-Doc-1.34.0).

## Contents

Installed Programs: gegl and gegl-imgcmp
Installed Libraries: libgegl-0.4.so, libgegl-npd-0.4.so, and modules in /usr/lib/gegl-0.4
Installed Directories: /usr/lib/gegl-0.4 and /usr/include/gegl-0.4

### Short Descriptions

gegl | is a commandline tool for interfacing with the gegl library
gegl-imgcmp | is a simple image difference detection tool for use in regression testing
`libgegl-0.4.so` | provides infrastructure to do demand based cached non destructive image editing on larger than RAM buffers
`libgegl-npd-0.4.so` | is the GEGL N-point image deformation library

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