[sysprof] Support silent build rules with automake 1.11

[Javier Jardón <jjardon src gnome org>]

commit fbf052a4822cec4f80f8ff92c5af2cab5ebfa46e
Author: Javier Jardón <jjardon gnome org>
Date:   Mon Nov 2 23:23:40 2009 +0100

    Support silent build rules with automake 1.11
    
    Support silent build rules, requires at least automake-1.11.
    Disable by either passing --disable-silent-rules to configure or
    passing V=1 to make.

 configure.ac |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 95b9422..6257a36 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,6 +10,11 @@ AM_CONFIG_HEADER(config.h)
 AC_PROG_CC
 AC_PROG_INSTALL
 
+# Support silent build rules, requires at least automake-1.11. Disable
+# by either passing --disable-silent-rules to configure or passing V=1
+# to make
+m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
+
 changequote(,)dnl
 if test "x$GCC" = "xyes"; then
   case " $CFLAGS " in