This commit adds using Extract PDFmark for DocBook documents.
ifeq (,$(findstring dblatex,$(MISSING_OPTIONAL)))
$(outdir)/%.pdf: $(outdir)/%.xml
cd $(outdir) && $(buildscript-dir)/run-and-check "$(DBLATEX) $(DBLATEX_BACKEND) $(notdir $<)" "$*.dblatex.log"
+ifeq ($(USE_EXTRACTPDFMARK),yes)
+ $(EXTRACTPDFMARK) -o $(outdir)/$*.pdfmark $@
+ $(GS920) -dBATCH -dNOPAUSE -sDEVICE=pdfwrite -sOutputFile=$(outdir)/$*.final.pdf -c "30000000 setvmthreshold" -f $(top-build-dir)/out-fonts/*.font.ps $(outdir)/$*.pdfmark $@
+ rm $@
+ mv $(outdir)/$*.final.pdf $@
+endif
endif