add AM_MAINTAINER_MODE

diff --git a/configure.ac b/configure.ac
index ba9814f..a4568be 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -12,6 +12,8 @@ AC_C_INLINE
 AM_PROG_CC_C_O
 AC_DEFINE([_GNU_SOURCE], [], [Use GNU extensions])
 
+AM_MAINTAINER_MODE
+
 AC_MSG_CHECKING([operating system])
 case $host in
 *-linux*)