configure.ac: require autoconf 2.60

diff --git a/configure.ac b/configure.ac
index 3cc6b5d1fabef788f12480f3e0b230391695aa7b..c1cabc3e349973c2abb5da0923e29f6069f1b76b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,3 +1,4 @@
+AC_PREREQ(2.60)
 AC_INIT(ncurses MPD client, 0.12~git, max@duempel.org, ncmpc)
 AC_CONFIG_SRCDIR([src/main.c])
 AM_INIT_AUTOMAKE([gnu 1.9 dist-bzip2])