Docs fail to build with gtk-doc 1.30
I presume this was triggered by an upgrade of gtk-doc from 1.29 to 1.30, since librsvg 2.44.13 built fine before.
make: Entering directory '/build/librsvg/src/librsvg/doc' DOC Preparing build DOC Building XML DOC Scanning header files DOC Introspecting gobjects DOC Building XML ./rsvg-sections.txt:39: warning: No declaration found for RsvgSizeFunc. ./rsvg-sections.txt:96: warning: No declaration found for librsvg_version. See rsvg-undeclared.txt for the list of undeclared symbols. ./rsvg-unused.txt:1: warning: 17 unused declarations. They should be added to rsvg-sections.txt in the appropriate place. DOC Building HTML ../xml/rsvg-handle.xml:107: namespace error : Namespace prefix xlink for href on link is not defined xlink:href="https://www.w3.org/TR/SVG/">SVG 1.1</link> data. It also ^ warning: failed to load external entity "../xml/tree_index.sgml" ../rsvg-docs.xml:133: element include: XInclude error : could not load ../xml/tree_index.sgml, and no fallback was found make: *** [Makefile:827: html-build.stamp] Error 6 make: Leaving directory '/build/librsvg/src/librsvg/doc'
librsvg 2.44.13 and 2.44.14.