Beyond Linux® From Scratch (systemd Edition) - Version 12.2

Chapter 10. Graphics and Font Libraries

gegl-0.4.48

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 12.2 platform.

Package Information

  • Download (HTTP): https://download.gimp.org/pub/gegl/0.4/gegl-0.4.48.tar.xz

  • Download MD5 sum: a96ae32d46855ab4eefa1fce2dbefda1

  • Download size: 5.5 MB

  • Estimated disk space required: 80 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-0.1.108 and JSON-GLib-1.8.0

Recommended

GLib-2.80.4 (with GObject Introspection), Graphviz-12.1.0 (build with pango and libpng), Pygments-2.18.0, and PyGObject-3.48.2

Optional

asciidoc-10.2.1, Cairo-1.18.0, FFmpeg-7.0.2 (currently broken), gdk-pixbuf-2.42.12, gexiv2-0.14.3, GTK-Doc-1.34.0, JasPer-4.2.4, Little CMS-2.16, libraw-0.21.2, librsvg-2.58.3, libspiro-20220722, libtiff-4.6.0, libwebp-1.4.0, Pango-1.54.0, Poppler-24.08.0, Ruby-3.3.4, SDL2-2.30.6, v4l-utils-1.28.1, Vala-0.56.17, LuaJIT, lensfun, LuaJIT, 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 -D libav=disabled .. &&
ninja

To run the tests, issue: ninja test.

Now, as the root user: 

ninja install

Command Explanations

-D libav=disabled: This switch disables building support for ffmpeg because the latest version causes the build to fail.

-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