+if XSLT_SHEETS_INSTALL
+dist_docbook_DATA = $(docbook_FILES)
+dist_docbookcommon_DATA = $(docbookcommon_FILES)
+dist_docbookepub3_DATA = $(docbookepub3_FILES)
+dist_docbooklib_DATA = $(docbooklib_FILES)
+dist_docbookxhtml5_DATA = $(docbookxhtml5_FILES)
+dist_docbookxhtml_DATA = $(docbookxhtml_FILES)
+else
+dist_noinst_DATA += $(docbook_FILES)
+dist_noinst_DATA += $(docbookcommon_FILES)
+dist_noinst_DATA += $(docbookepub3_FILES)
+dist_noinst_DATA += $(docbooklib_FILES)
+dist_noinst_DATA += $(docbookxhtml5_FILES)
+dist_noinst_DATA += $(docbookxhtml_FILES)
+endif
+