Beyond Linux® From Scratch (System V Edition) - Version 11.2

Chapter 10. Graphics and Font Libraries

gegl-0.4.38

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-11.2 platform.

Package Information

gegl Dependencies

Required

babl-0.1.94, JSON-GLib-1.6.6, libjpeg-turbo-2.1.4, and libpng-1.6.37

Recommended

gobject-introspection-1.72.0, Graphviz-5.0.1, Pygments-2.13.0, and PyGObject-3.42.2

Optional

asciidoc-10.2.0, Cairo-1.17.6, Exiv2-0.27.5, FFmpeg-5.1, gdk-pixbuf-2.42.9, gexiv2-0.14.0, GTK-Doc-1.33.2, JasPer-3.0.6, Little CMS-2.13.1, librsvg-2.54.4, libtiff-4.4.0, libwebp-1.2.4, Pango-1.50.9, Ruby-3.1.2, SDL2-2.24.0, v4l-utils-1.22.1, Vala-0.56.2, libspiro-20220722, lensfun, libopenraw, libumfpack, LuaJIT, OpenCL (for tests), MRG, and OpenEXR

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

Installation of gegl

If installing over a previous version of gegl, one module needs to be removed. As the root user, run: 

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

Install gegl by running the following commands: 

mkdir build &&
cd    build &&

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

To run the tests, issue: ninja test. This should indicate no failures, but will skip many tests depending on optional dependencies installed on the system.

Now, as the root user: 

ninja install

Command Explanations

-Ddocs=true: Build and install documentation (requires GTK-Doc-1.33.2,).

Contents

Installed Programs: gegl and gegl-imgcmp
Installed Libraries: libgegl-0.4.so, libgegl-npd-0.4.so, libgegl-sc-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 working with the XML data model

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

libgegl-sc-0.4.so

is the GEGL Seamless Cloning library