[lasem] [build] Use AM_SILENT_RULES.

[Emmanuel Pacaud <emmanuel src gnome org>]

commit b8e479c75a597ae32e0c20edc81bf34db2b06614
Author: Emmanuel Pacaud <emmanuel pacaud lapp in2p3 fr>
Date:   Wed Jul 8 17:45:19 2009 +0200

    [build] Use AM_SILENT_RULES.

 configure.ac |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 75d718a..bd8a468 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,6 +12,8 @@ AM_CONFIG_HEADER(config.h)
 AM_MAINTAINER_MODE
 AC_CONFIG_MACRO_DIR([m4])
 
+m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
+
 AC_ISC_POSIX
 AC_PROG_CC
 AM_PROG_CC_STDC