We definitely need a unified build file (makefile, wscript or
whatever) for docs and translations.
# FIXME: duplicated in stepake/texinfo-vars.make make/doc-i18n-root-vars.make
XREF_MAPS_DIR=$(top-build-dir)/$(outdir)/xref-maps
XREF_MAPS_FILES=$(TEXINFO_MANUALS:%=$(XREF_MAPS_DIR)/%.$(ISOLANG).xref-map)
# FIXME: duplicated in stepake/texinfo-vars.make make/doc-i18n-root-vars.make
XREF_MAPS_DIR=$(top-build-dir)/$(outdir)/xref-maps
XREF_MAPS_FILES=$(TEXINFO_MANUALS:%=$(XREF_MAPS_DIR)/%.$(ISOLANG).xref-map)
-XREF_MAP_FLAGS += -I $(outdir)
+XREF_MAP_FLAGS += -I $(outdir) -I$(src-dir)