Librsvg as a product
A full build of librsvg produces several artifacts, which are the
final “products” that are produced from the build. We will discuss
them in three groups: library artifacts,
Librsvg is part of the GNOME platform libraries, and needs to maintain a C-compatible API with ABI stability across versions.
The build produces these artifacts, which are typical of GNOME libraries that can be used from C and other languages:
A shared library
librsvg-2.so(the file extension will be different on MacOS or Windows). This is usually installed as part of the system’s libraries. For example, the GTK toolkit assumes that librsvg’s library is installed in the system, and uses it to load SVG assets like icons. Applications can generally link to this library and load SVG documents for different purposes.
A group of C header files (
*.h) that will be installed in the system’s location for header files. C and C++ programs can use these directly.
librsvg-2.pcfile for pkg-config. This lets compilation scripts find the location of the installed library and header files.
.typelibfiles for GObject Introspection. These are machine-readable descriptions of the API/ABI in the .so library, which are used by language bindings to make librsvg’s functionality available to many programming languages.
.vapidescription of the API for the Vala language compiler.
Apart from the C-compatible library, the Rust code for the library
librsvg crate that can be used by Rust programs. As of
2022/Aug, that API is still a bit experimental and subject to change,
and it is not published yet on
crates.io. In the future, when
librsvg gets published to crates.io (see what is missing to do
that), it will follow Rust’s usual semantic versioning scheme for
API compatibility and stability throughout versions.
rsvg-convert is a command-line tool to render SVG documents to
various output formats. It is a very widely-used tool, and many
scripts and systems depend on it maintaining a stable set of
The build produces these:
rsvg-convertexecutable. This is the tool that most end-users interact with.
A Unix manual page for
libpixbufloader-svg.somodule for gdk-pixbuf. This allows programs to use the gdk-pixbuf API to load SVG documents, as if they were raster files like JPEG or PNG.
librsvg.thumbnailerconfiguration file, to tell GNOME’s thumbnailing mechanism that it can just use gdk-pixbuf when trying to create a thumbnail for an SVG file. These thumbnails can then get displayed in file managers.
Documentation for the Rust API, published online. This is not built from the normal make process, but independently as part of the Continuous Integration - When robots are eager to help pipeline.