configure.ac: enable automake silent rules

diff --git a/configure.ac b/configure.ac
index 3e6efb0..dd33f76 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -16,6 +16,11 @@ AM_INIT_AUTOMAKE([1.10])
 dnl enable mainainer mode by default
 AM_MAINTAINER_MODE([enable])
 
+dnl use pretty build output with automake >= 1.11
+m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])],
+  [AM_DEFAULT_VERBOSITY=1
+   AC_SUBST(AM_DEFAULT_VERBOSITY)])
+
 dnl check for tools (compiler etc.)
 AC_PROG_CC