Add script for building EEP index, adapt index

Makefile

@@ -6,9 +6,14 @@
 ## Author: Erlang/OTP, Raimo Niskanen
 #
 
-PERL = perl -w
+PERL = perl -w -CSD
 EEPS_DIR = eeps
-MD = ./md/Markdown.pl
+MD = md/Markdown.pl
+MK = Makefile
+IX = eep-index.pl
+PRE = eep-pre.pl
+
+
 
 all: README.html
 	@$(MAKE) `$(PERL) -e '\
@@ -18,9 +23,12 @@ all: README.html
 		print "$$d/$$_\n" if s/[.]md$$/.html/; \
 	    }' $(EEPS_DIR)`
 
-README.html: README.md Makefile $(MD)
-	$(PERL) ./md/Markdown.pl $< > $@
+README.html: README.md $(MK) $(MD)
+	$(PERL) $(MD) $< > $@
 
-eeps/eep-%.html: eeps/eep-%.md Makefile $(MD)
-	$(PERL) -lpe 's{^(\[EEP\s+\d+\]:\s+\<eep-\d+)[.]md\>}{$$1.html>}' $< |\
+eeps/eep-0000.html: eeps/eep-*.md $(MK) $(IX) $(PRE)
+	$(PERL) $(IX) eeps/eep-0000.md | $(PERL) $(PRE) |\
 	$(PERL) $(MD) > $@
+
+eeps/eep-%.html: eeps/eep-%.md $(MK) $(MD) $(PRE)
+	$(PERL) $(PRE) $< | $(PERL) $(MD) > $@