.SUFFIXES: .html .info .texi .texinfo
-$(outdir)/%.info: $(outdir)/%.texi
- $(MAKEINFO) -I $(outdir) --output=$@ $<
+# "makeinfo --info" MUST be able to read PNGs from CWD for info images
+# to work, hence $(INFO_IMAGES_DIR) -> $(outdir)/ symlink.
+# $(outdir)/$(INFO_IMAGES_DIR)/*.png symlinks are only needed to view
+# out-www/*.info with Emacs -- HTML docs no longer need these
+# symlinks, see replace_symlinks_urls in
+# buildscripts/add_html_footer.py.
+
+ifneq ($(INFO_IMAGES_DIR),)
+
+# make dereferences symlinks, and $(INFO_IMAGES_DIR) is a symlink
+# to $(outdir), so we can't use directly $(INFO_IMAGES_DIR) as a
+# prerequisite, otherwise %.info are always outdated (because older
+# than $(outdir), hence this .dep file
+
+$(outdir)/%.info-images-dir.dep: $(outdir)/%.texi
+ rm -f $*
+ ln -s $(outdir) $*
+ mkdir -p $(outdir)/$*
+ find $(outdir)/$*/ -name '*'.png | xargs rm -f
+ (cd $(outdir)/$*/ ; ln -sf ../*.png . )
+ touch $@
+
+else
+
+$(outdir)/.info-images-dir.dep:
+ touch $@
+
+endif
+
+$(outdir)/%.info: $(outdir)/%.texi $(outdir)/$(INFO_IMAGES_DIR).info-images-dir.dep
+ $(MAKEINFO) -I$(outdir) --output=$@ $<
$(outdir)/%-big-page.html: $(outdir)/%.texi
$(MAKEINFO) -I $(outdir) --output=$@ --css-include=$(top-src-dir)/Documentation/texinfo.css --html --no-split -D bigpage --no-headers $<
$(outdir)/%.ps.gz.omf: %.texi
$(call GENERATE_OMF,ps.gz)
-# Generic rule not possible?
-$(outdir)/%/%.html: $(outdir)/%.texi
- $(MAKEINFO) --output=$@ --css-include=$(top-src-dir)/Documentation/texinfo.css --html $<
+$(outdir)/%/index.html: $(outdir)/%.texi
+ mkdir -p $(dir $@)
+ $(MAKEINFO) -I $(outdir) --output=$(dir $@) --css-include=$(top-src-dir)/Documentation/texinfo.css --html $<
$(outdir)/%.pdf: $(outdir)/%.texi
cd $(outdir); texi2pdf $(TEXI2PDF_FLAGS) --batch $(TEXINFO_PAPERSIZE_OPTION) $(<F)