[Pkg-lxde-maintainers] Bug#876614: libfm FTBFS with gtk-doc-tools 1.26: fm-module.xml:72: parser error : error parsing attribute name

[Adrian Bunk]

Source: libfm
Version: 1.2.5-1
Severity: serious
Tags: buster sid

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/libfm.html

...
rm -rf html && mkdir html && \
mkhtml_options=""; \
gtkdoc-mkhtml 2>&1 --help | grep  >/dev/null "\-\-verbose"; \
if test "sgml.stamp libfm-docs.xml" = "0"; then \
  if test "x" = "x1"; then \
    mkhtml_options="$mkhtml_options --verbose"; \
  fi; \
fi; \
gtkdoc-mkhtml 2>&1 --help | grep  >/dev/null "\-\-path"; \
if test "sgml.stamp libfm-docs.xml" = "0"; then \
  mkhtml_options="$mkhtml_options --path=\"/build/1st/libfm-1.2.5/docs/reference/libfm\""; \
fi; \
cd html && gtkdoc-mkhtml $mkhtml_options  libfm ../libfm-docs.xml
../xml/fm-module.xml:72: parser error : error parsing attribute name
#include <libfm/fm.h>
               ^
../xml/fm-module.xml:72: parser error : attributes construct error
#include <libfm/fm.h>
               ^
../xml/fm-module.xml:72: parser error : Couldn't find end of Start Tag libfm line 72
#include <libfm/fm.h>
               ^
../libfm-docs.xml:50: element include: XInclude error : could not load ../xml/fm-module.xml, and no fallback was found
Makefile:794: recipe for target 'html-build.stamp' failed
make[5]: *** [html-build.stamp] Error 6