[grilo/debian: 41/44] Add silent.m4 macro

[Juan A. Suarez Romero <jasuarez src gnome org>]

commit 06d5078beb261815ee8058c350a2e47d8f078667
Author: Juan A. Suarez Romero <jasuarez igalia com>
Date:   Fri May 7 18:20:22 2010 +0200

    Add silent.m4 macro
    
    Some old distributions, as Ubuntu Jaunty, do not have this macro file.

 m4/silent.m4 |   27 +++++++++++++++++++++++++++
 1 files changed, 27 insertions(+), 0 deletions(-)
---
diff --git a/m4/silent.m4 b/m4/silent.m4
new file mode 100644
index 0000000..6d2a1a2
--- /dev/null
+++ b/m4/silent.m4
@@ -0,0 +1,27 @@
+##                                                          -*- Autoconf -*-
+# Copyright (C) 2009  Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 1
+
+# AM_SILENT_RULES([DEFAULT])
+# --------------------------
+# Enable less verbose build rules; with the default set to DEFAULT
+# (`yes' being less verbose, `no' or empty being verbose).
+AC_DEFUN([AM_SILENT_RULES],
+[AC_ARG_ENABLE([silent-rules],
+[  --enable-silent-rules          less verbose build output (undo: `make V=1')
+  --disable-silent-rules         verbose build output (undo: `make V=0')])
+case $enable_silent_rules in
+yes) AM_DEFAULT_VERBOSITY=0;;
+no)  AM_DEFAULT_VERBOSITY=1;;
+*)   AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
+esac
+AC_SUBST([AM_DEFAULT_VERBOSITY])dnl
+AM_BACKSLASH='\'
+AC_SUBST([AM_BACKSLASH])dnl
+_AM_SUBST_NOTMAKE([AM_BACKSLASH])dnl
+])