+if HAVE_DOT
+$(PDFS): doc/dev/spv-structure.pdf
+$(srcdir)/doc/dev/spv-structure.pdf: doc/dev/spv-structure.gv
+ dot -Tpdf < $< > $@
+
+$(DVIS): doc/dev/spv-structure.eps
+$(srcdir)/doc/dev/spv-structure.eps: doc/dev/spv-structure.gv
+ dot -Teps < $< > $@
+endif
+EXTRA_DIST += \
+ doc/dev/spv-structure.gv \
+ doc/dev/spv-structure.pdf \
+ doc/dev/spv-structure.eps
+