libpsl 0.21.0 fails to build on Ubuntu 21.04
When I try to build
libpsl 0.21.0 on Ubuntu 21.04 I always get the following error:
DOC Building XML ./libpsl-unused.txt:1: warning: 1 unused declarations. They should be added to libpsl-sections.txt in the appropriate place. DOC Building HTML warning: failed to load external entity "../xml/tree_index.sgml" ../libpsl-docs.sgml:27: element include: XInclude error : could not load ../xml/tree_index.sgml, and no fallback was found make: *** [Makefile:874: html-build.stamp] Error 6 make: *** [Makefile:536: all-recursive] Error 1 make: *** [Makefile:445: all] Error 2
I am not sure if this is a problem of libpsl or something else causing this. I tried setting the
supports-non-srcdir-builds option to
false, but that did not help either.