diff --git a/demo/Makefile.am b/demo/Makefile.am
--- a/demo/Makefile.am
+++ b/demo/Makefile.am
@@ -3,6 +3,10 @@
 
 if WANT_DEMO
 
-noinst_PROGRAMS +=
+noinst_PROGRAMS += \
+        demo/arg_parser_demo
 
 endif WANT_DEMO
+
+demo_arg_parser_demo_SOURCES = demo/arg_parser_demo.cc
+