Fix doc building for binary distributions
# BINDIST_DOC_WAYS =
binary-dist ::
# BINDIST_DOC_WAYS =
binary-dist ::
-ifneq "$(DOCBOOK_CATALOG)" ""
+ifneq "$(DIR_DOCBOOK_XSL)" ""
@for i in $(BIN_DIST_DIRS); do \
if test -d "$$i"; then \
$(MAKE) -C $$i $(MFLAGS) $(BINDIST_DOC_WAYS); \
@for i in $(BIN_DIST_DIRS); do \
if test -d "$$i"; then \
$(MAKE) -C $$i $(MFLAGS) $(BINDIST_DOC_WAYS); \