build: Require automake 1.11

This is a rather old release (from 2009), that provides AM_SILENT_RULES.

diff --git a/configure.ac b/configure.ac
index 95a4be3701ba8eeac953a9bf36708e8cdc4233a1..9b22866eb477bb746a9003641c8ff4818c76c6ba 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -6,10 +6,8 @@ AC_CONFIG_SRCDIR([src/strlcpy.c])
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])
 
-AM_INIT_AUTOMAKE([1.9 foreign nostdinc subdir-objects no-dist-gzip dist-xz])
-
-m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])],
-                            [AC_SUBST([AM_DEFAULT_VERBOSITY], [1])])
+AM_INIT_AUTOMAKE([1.11 foreign nostdinc subdir-objects no-dist-gzip dist-xz])
+AM_SILENT_RULES([yes])
 
 LIBBSD_ABI_MAJOR=0
 LIBBSD_ABI_MINOR=11