configure: Support silent build rules

Disable by either passing --disable-silent-rules to configure or
passing V=1 to make

diff --git a/configure.ac b/configure.ac
index 5fd5c80..ffbd37b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -48,6 +48,11 @@ AM_CONFIG_HEADER(config.h)
 
 AM_INIT_AUTOMAKE([-Wno-portability])
 
+# 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])])
+
 dnl ==========================================================================
 dnl
 dnl If you add a version number here, you *must* add an AC_SUBST line for