-.PHPNY: html clean
-html: yacasl2.texi
- @makeinfo --html $^
-clean:
- @rm -rf yacasl2
+DOCNAME = yacasl2
+SRC = $(DOCNAME).texi
+CSS = style.css
+HTMLDIR = html
+
+MV ?= mv
+CP ?= cp
+MKDIR ?= mkdir
+RMRF ?= rm -rf
+PTEX ?= ptex
+TEXI2DVI ?= texi2dvi
+DVI2PDF ?= dvipdfmx
+MAKEINFO ?= gmakeinfo
+INSTALL ?= install
+INSTALL-INFO ?= ginstall-info
+
+prefix ?= ~
+infodir ?= $(prefix)/share/info
+
+.PHONY: all info htmlnosplit html pdf install-info clean clean-docs clean-tex-tmp
+
+.INTERMEDIATE: $(DOCNAME).dvi
+
+all: info html htmls pdf
+
+info: $(DOCNAME).info
+
+html: $(DOCNAME).html
+ $(MV) $< index.html
+
+htmls: $(SRC) $(CSS)
+ $(INSTALL) -d $(HTMLDIR)
+ $(INSTALL) $(CSS) $(HTMLDIR)/
+ $(MAKEINFO) -o $(HTMLDIR) --html --css-ref=$(CSS) $(SRC)
+
+pdf: $(DOCNAME).pdf
+
+$(DOCNAME).html: $(SRC) $(CSS)
+ $(MAKEINFO) -o $@ --no-split --html --css-include=$(CSS) $(SRC)
+
+$(DOCNAME).pdf: $(DOCNAME).dvi
+ $(DVI2PDF) $^
+
+$(DOCNAME).dvi: $(SRC)
+ TEX=$(PTEX) $(TEXI2DVI) -q --texinfo=@afourpaper -o $@ $<
+ @$(MAKE) clean-tex-tmp
+
+install-info: $(DOCNAME).info
+ $(INSTALL) -d $(infodir)
+ $(INSTALL) $(DOCNAME).info $(infodir)/$(DOCNAME)
+ $(INSTALL-INFO) $(infodir)/$(DOCNAME) $(infodir)/dir
+
+uninstall-info: $(DOCNAME).info
+ $(INSTALL-INFO) --delete $(infodir)/$(DOCNAME) $(infodir)/dir
+ $(RM) $(infodir)/$(DOCNAME)
+
+clean: clean-docs clean-tex-tmp
+
+clean-docs:
+ @$(RMRF) html $(DOCNAME).info $(DOCNAME).pdf index.html
+
+clean-tex-tmp:
+ @$(RMRF) $(DOCNAME).aux $(DOCNAME).cp $(DOCNAME).cps $(DOCNAME).fn $(DOCNAME).ky $(DOCNAME).log $(DOCNAME).pg $(DOCNAME).pgs $(DOCNAME).tmp $(DOCNAME).toc $(DOCNAME).tp $(DOCNAME).vr