Please describe the problem:
...
Making all in help
make[2]: Entering directory `/var/tmp/portage/gnome-extra/gnome-system-monitor-2.17.93/work/gnome-system-monitor-2.17.93/help'
xsltproc -o gnome-system-monitor-C.omf --stringparam db2omf.basename gnome-system-monitor --stringparam db2omf.format 'docbook' --stringparam db2omf.dtd "-//OASIS//DTD DocBook XML V4.1.2//EN" --stringparam db2omf.lang C --stringparam db2omf.omf_dir "/usr/share/omf" --stringparam db2omf.help_dir "/usr/share/gnome/help" --stringparam db2omf.omf_in "`pwd`/./gnome-system-monitor.omf.in" `/usr/bin/pkg-config --variable db2omf gnome-doc-utils` C/gnome-system-monitor.xml
xsltproc -o gnome-system-monitor-bg.omf --stringparam db2omf.basename gnome-system-monitor --stringparam db2omf.format 'docbook' --stringparam db2omf.dtd "-//OASIS//DTD DocBook XML V4.1.2//EN" --stringparam db2omf.lang bg --stringparam db2omf.omf_dir "/usr/share/omf" --stringparam db2omf.help_dir "/usr/share/gnome/help" --stringparam db2omf.omf_in "`pwd`/./gnome-system-monitor.omf.in" `/usr/bin/pkg-config --variable db2omf gnome-doc-utils` bg/gnome-system-monitor.xml
db2omf: Could not construct the OMF description element.
  Add an abstract with the role attribute set to "description"
  to gnome-system-monitor.xml.
make[2]: *** [gnome-system-monitor-C.omf] Error 10
make[2]: *** Waiting for unfinished jobs....
db2omf: Could not construct the OMF description element.
  Add an abstract with the role attribute set to "description"
  to gnome-system-monitor.xml.
make[2]: *** [gnome-system-monitor-bg.omf] Error 10
make[2]: Leaving directory `/var/tmp/portage/gnome-extra/gnome-system-monitor-2.17.93/work/gnome-system-monitor-2.17.93/help'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/var/tmp/portage/gnome-extra/gnome-system-monitor-2.17.93/work/gnome-system-monitor-2.17.93'
make: *** [all] Error 2

Steps to reproduce:
1. 
2. 
3. 


Actual results:


Expected results:


Does this happen every time?
yes

Other information:
I'm using xsltproc from libxslt-1.1.20