[libdmapsharing] silence builds by default

[W. Michael Petullo <wmpetullo src gnome org>]

commit 0e20a911ae6dee6636bfa72a912185b6626a87e6
Author: W. Michael Petullo <mike flyn org>
Date:   Sat Apr 19 19:07:10 2014 -0400

    silence builds by default
    
    Signed-off-by: W. Michael Petullo <mike flyn org>

 configure.ac |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index cde56d5..3bdcb1d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,6 +4,9 @@ dnl when going to/from release please set the nano (fourth number) right !
 dnl releases only do Wall, cvs and prerelease does Werror too
 AS_VERSION(libdmapsharing, LIBDMAPSHARING, 2, 9, 25, LIBDMAPSHARING_CVS="no", LIBDMAPSHARING_CVS="yes")
 
+# Enable silent build when available (Automake 1.11)
+m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
+
 dnl FIXME:
 dnl would like to automate this off the above definitions, but API might be 2.2 with version 2.1.
 dnl see also Makefile.am, libdmapsharing/Makefile.am and libdmapsharing.pc.in