$(top-build-dir)/Documentation/$(outdir)/general/index.$(ISOLANG).html:\
TEXI2HTML_SPLIT := $(WEB_TEXI2HTML_SPLIT)
-TEXI2HTML_INCLUDES += $(DOCUMENTATION_INCLUDES) --I=$(XREF_MAPS_DIR)
+TEXI2HTML_INCLUDES += --I=. --I=$(src-dir) --I=$(outdir) $(DOCUMENTATION_INCLUDES) --I=$(XREF_MAPS_DIR)
TEXI2HTML_FLAGS += $(TEXI2HTML_INCLUDES) $(TEXI2HTML_INIT) $(TEXI2HTML_LANG)
-TEXI2HTML = PERL_UNICODE=SD $(TEXI2HTML_PROGRAM) $(TEXI2HTML_FLAGS)
+TEXI2HTML = PERL_UNICODE=SD $(TEXI2HTML_PROGRAM)
###########
TEXI2PDF_FLAGS += --batch $(DOCUMENTATION_INCLUDES)