* Generate the manpage in the make rule, not the configure rule, because

at configure time ${datarootdir} depends on ${prefix} which is defined
    a bit too late in the script.

configure.ac

@@ -77,6 +77,5 @@ AC_OUTPUT([
   tools/Makefile
   fonts/Makefile
   doc/Makefile
-  doc/toilet.1
 ])
 

doc/Makefile.am

@@ -1,6 +1,10 @@
 # $Id: Makefile.am 871 2006-09-25 15:58:33Z sam $
 
 EXTRA_DIST = toilet.1.in
+CLEANFILES = toilet.1
 
 man_MANS = toilet.1
 
+toilet.1: toilet.1.in
+	sed -e "s,@data""rootdir@,$(datarootdir),g" $(srcdir)/$^ > $@
+