diff --git a/Makefile b/Makefile
index df7b060..657df8f 100755
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,27 @@
 # $Id$
 
+
 all: xml2html.xsl xml2latex.xsl
 
 xml2html.xsl: format-master.xml xml2xslt.xsl Makefile
-	Xalan -p format "'html'" format-master.xml xml2xslt.xsl > xml2html.xsl
+ifeq ($(XSLT),xalan-c)
+	Xalan -p format "'html'" $< xml2xslt.xsl > $@
+else
+ifeq ($(XSLT),xalan-j)
+	xalan -param format "'html'" $< xml2xslt.xsl > $@
+else
+	saxon $< xml2xslt.xsl format=html > $@
+endif
+endif
 
 xml2latex.xsl: format-master.xml xml2xslt.xsl Makefile
-	Xalan -p format "'latex'" format-master.xml xml2xslt.xsl > xml2latex.xsl
+ifeq ($(XSLT),xalan-c)
+	Xalan -p format "'latex'" $< xml2xslt.xsl > $@
+else
+ifeq ($(XSLT),xalan-j)
+	xalan -param format "'latex'" $< xml2xslt.xsl > $@
+else
+	saxon $< xml2xslt.xsl format=latex > $@
+endif
+endif