Enable Kbuild-like quiet builds

This enables much cleaner build output from automake.  To re-enable the
verbose commands, pass --disable-silent-rules to configure, or use V=1
at make time.

* configure.ac: Enable AM_SILENT_RULES by default.

1 files changed, 27 insertions, 0 deletions

diff --git a/aclocal.m4 b/aclocal.m4
index df70f994..af40323c 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -1086,6 +1086,33 @@ Check your system clock])
 fi
 AC_MSG_RESULT(yes)])
 
+# 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
+])
+
 # Copyright (C) 2001, 2003, 2005  Free Software Foundation, Inc.
 #
 # This file is free software; the Free Software Foundation