Relax automake requirements and make 1.11 features optional -- kevin brintnall

[rrdtool.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index dc81646..2f4be2c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -8,6 +8,9 @@ dnl Inspiration from http://autoconf-archive.cryp.to
  
 dnl tell automake the this script is for rrdtool
 
+dnl Minimum Autoconf version required.
+AC_PREREQ(2.59)
+
 dnl the official version number is
 dnl a.b.c
 AC_INIT([rrdtool],[1.3.999])
@@ -32,10 +35,10 @@ LIBVERS=5:0:1
 AC_SUBST(LIBVERS)
 
 AC_CANONICAL_TARGET
-AC_USE_SYSTEM_EXTENSIONS
-AM_INIT_AUTOMAKE([silent-rules])
+m4_version_prereq(2.60, [AC_USE_SYSTEM_EXTENSIONS], [#])
+AM_INIT_AUTOMAKE(m4_version_prereq(2.63, [silent-rules], [[]]))
 AM_MAINTAINER_MODE
-AM_SILENT_RULES([yes])
+m4_version_prereq(2.63, [AM_SILENT_RULES([yes])], [#])
 AC_CONFIG_HEADERS([rrd_config.h])
 AC_CONFIG_MACRO_DIR([m4])
 
@@ -49,9 +52,6 @@ AC_SUBST(VERSION)
 
 AC_PREFIX_DEFAULT( /usr/local/rrdtool-$PACKAGE_VERSION )
 
-dnl Minimum Autoconf version required.
-AC_PREREQ(2.59)
-
 dnl At the TOP of the HEADER
 
 AH_TOP([