do not regenerate html file if asciidoc not installed

diff --git a/doc/Makefile.am b/doc/Makefile.am
index ff17802..8157c8e 100644 (file)
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
@@ -1,4 +1,6 @@
 dist_doc_DATA = faq.html faq.txt
 
+if ASCIIDOC
 faq.html: faq.txt ../www/style.css
-       asciidoc --theme style -a themedir=`pwd`/../www -n -a toc faq.txt 
\ No newline at end of file
+       asciidoc --theme style -a themedir=`pwd`/../www -n -a toc faq.txt
+endif