+dnl If we use rpm, we need to check where %_topdir is
+AC_CHECK_PROGS(RPMBIN,rpm,false)
+if test $RPMBIN != false; then
+ RPM_BASE=`rpm --eval "%{_topdir}"`
+ if test "$RPM_BASE" = ""; then
+ RPM_BASE=/usr/src/redhat
+ fi
+fi
+AC_SUBST(RPM_BASE)
+
+dnl Check for jade, so we can build the documentation
+AC_CHECK_PROGS(JADEBIN,jade openjade,false)
+AC_SUBST(JADEBIN)
+
+dnl Checking for the docbook.dsl stylesheet file
+DKPREFIX=none
+AC_CHECK_FILE(/usr/share/sgml/docbook/dsssl-stylesheets/html/docbook.dsl,DKPREFIX=/usr/share/sgml/docbook/dsssl-stylesheets,AC_CHECK_FILE(/usr/share/sgml/docbkdsl/html/docbook.dsl,DKPREFIX=/usr/share/sgml/docbkdsl))
+AC_SUBST(DKPREFIX)
+