--- perl/Makefile.am.orig	2016-04-14 19:05:30.879298356 -0400
+++ perl/Makefile.am	2016-04-14 19:05:37.907298474 -0400
@@ -168,10 +168,10 @@
 endif
 MAINTAINERCLEANFILES = $(BUILT_SOURCES)
 
+if DOCUMENTATION_RULES
 docdatadir = $(docdir)/perl
 docdata_DATA = docs/index.html
 
-if DOCUMENTATION_RULES
 BUILT_SOURCES += docs/index.html
 
 docs/index.html: Xapian.pm